The common nutrient range values of the ionic form of the elements absorbed by plants.
\r\n\tIn sum, the book presents a reflective analysis of the pedagogical hubs for a changing world, considering the most fundamental areas of the current contingencies in education.
",isbn:"978-1-83968-793-8",printIsbn:"978-1-83968-792-1",pdfIsbn:"978-1-83968-794-5",doi:null,price:0,priceEur:0,priceUsd:0,slug:null,numberOfPages:0,isOpenForSubmission:!1,hash:"b01f9136149277b7e4cbc1e52bce78ec",bookSignature:"Dr. María Jose Hernandez-Serrano",publishedDate:null,coverURL:"https://cdn.intechopen.com/books/images_new/10229.jpg",keywords:"Teacher Digital Competences, Flipped Learning, Online Resources Design, Neuroscientific Literacy (Myths), Emotions and Learning, Multisensory Stimulation, Citizen Skills, Violence Prevention, Moral Development, Universal Design for Learning, Sensitizing on Diversity, Supportive Strategies",numberOfDownloads:null,numberOfWosCitations:0,numberOfCrossrefCitations:null,numberOfDimensionsCitations:null,numberOfTotalCitations:null,isAvailableForWebshopOrdering:!0,dateEndFirstStepPublish:"September 14th 2020",dateEndSecondStepPublish:"October 12th 2020",dateEndThirdStepPublish:"December 11th 2020",dateEndFourthStepPublish:"March 1st 2021",dateEndFifthStepPublish:"April 30th 2021",remainingDaysToSecondStep:"3 months",secondStepPassed:!0,currentStepOfPublishingProcess:4,editedByType:null,kuFlag:!1,biosketch:"Dr. Phil. Maria Jose Hernandez Serrano is a tenured lecturer in the Department of Theory and History of Education at the University of Salamanca, where she currently teaches on Teacher Education. She graduated in Social Education (2000) and Psycho-Pedagogy (2003) at the University of Salamanca. Then, she obtained her European Ph.D. in Education and Training in Virtual Environments by research with the University of Manchester, UK (2009).",coeditorOneBiosketch:null,coeditorTwoBiosketch:null,coeditorThreeBiosketch:null,coeditorFourBiosketch:null,coeditorFiveBiosketch:null,editors:[{id:"187893",title:"Dr.",name:"María Jose",middleName:null,surname:"Hernandez-Serrano",slug:"maria-jose-hernandez-serrano",fullName:"María Jose Hernandez-Serrano",profilePictureURL:"https://mts.intechopen.com/storage/users/187893/images/system/187893.jpg",biography:"DPhil Maria Jose Hernandez Serrano is a tenured Lecturer in the Department of Theory and History of Education at the University of Salamanca (Spain), where she currently teaches on Teacher Education. She graduated in Social Education (2000) and Psycho-Pedagogy (2003) at the University of Salamanca. Then, she obtained her European Ph.D. on Education and Training in Virtual Environments by research with the University of Manchester, UK (2009). She obtained a Visiting Scholar Postdoctoral Grant (of the British Academy, UK) at the Oxford Internet Institute of the University of Oxford (2011) and was granted with a postdoctoral research (in 2021) at London Birbeck University.\n \nShe is author of more than 20 research papers, and more than 35 book chapters (H Index 10). She is interested in the study of the educational process and the analysis of cognitive and affective processes in the context of neuroeducation and neurotechnologies, along with the study of social contingencies affecting the educational institutions and requiring new skills for educators.\n\nHer publications are mainly of the educational process mediated by technologies and digital competences. Currently, her new research interests are: the transdisciplinary application of the brain-based research to the educational context and virtual environments, and the neuropedagogical implications of the technologies on the development of the brain in younger students. Also, she is interested in the promotion of creative and critical uses of digital technologies, the emerging uses of social media and transmedia, and the informal learning through technologies.\n\nShe is a member of several research Networks and Scientific Committees in international journals on Educational Technologies and Educommunication, and collaborates as a reviewer in several prestigious journals (see public profile in Publons).\n\nUntil March 2010 she was in charge of the Adult University of Salamanca, by coordinating teaching activities of more than a thousand adult students. She currently is, since 2014, the Secretary of the Department of Theory and History of Education. Since 2015 she collaborates with the Council Educational Program by training teachers and families in the translation of advances from educational neuroscience.",institutionString:"University of Salamanca",position:null,outsideEditionCount:0,totalCites:0,totalAuthoredChapters:"0",totalChapterViews:"0",totalEditedBooks:"0",institution:{name:"University of Salamanca",institutionURL:null,country:{name:"Spain"}}}],coeditorOne:null,coeditorTwo:null,coeditorThree:null,coeditorFour:null,coeditorFive:null,topics:[{id:"23",title:"Social Sciences",slug:"social-sciences"}],chapters:null,productType:{id:"1",title:"Edited Volume",chapterContentType:"chapter",authoredCaption:"Edited by"},personalPublishingAssistant:{id:"301331",firstName:"Mia",lastName:"Vulovic",middleName:null,title:"Mrs.",imageUrl:"https://mts.intechopen.com/storage/users/301331/images/8498_n.jpg",email:"mia.v@intechopen.com",biography:"As an Author Service Manager, my responsibilities include monitoring and facilitating all publishing activities for authors and editors. From chapter submission and review to approval and revision, copyediting and design, until final publication, I work closely with authors and editors to ensure a simple and easy publishing process. I maintain constant and effective communication with authors, editors and reviewers, which allows for a level of personal support that enables contributors to fully commit and concentrate on the chapters they are writing, editing, or reviewing. I assist authors in the preparation of their full chapter submissions and track important deadlines and ensure they are met. I help to coordinate internal processes such as linguistic review, and monitor the technical aspects of the process. As an ASM I am also involved in the acquisition of editors. Whether that be identifying an exceptional author and proposing an editorship collaboration, or contacting researchers who would like the opportunity to work with IntechOpen, I establish and help manage author and editor acquisition and contact."}},relatedBooks:[{type:"book",id:"6942",title:"Global Social Work",subtitle:"Cutting Edge Issues and Critical Reflections",isOpenForSubmission:!1,hash:"222c8a66edfc7a4a6537af7565bcb3de",slug:"global-social-work-cutting-edge-issues-and-critical-reflections",bookSignature:"Bala Raju Nikku",coverURL:"https://cdn.intechopen.com/books/images_new/6942.jpg",editedByType:"Edited by",editors:[{id:"263576",title:"Dr.",name:"Bala",surname:"Nikku",slug:"bala-nikku",fullName:"Bala Nikku"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"1591",title:"Infrared Spectroscopy",subtitle:"Materials Science, Engineering and Technology",isOpenForSubmission:!1,hash:"99b4b7b71a8caeb693ed762b40b017f4",slug:"infrared-spectroscopy-materials-science-engineering-and-technology",bookSignature:"Theophile Theophanides",coverURL:"https://cdn.intechopen.com/books/images_new/1591.jpg",editedByType:"Edited by",editors:[{id:"37194",title:"Dr.",name:"Theophanides",surname:"Theophile",slug:"theophanides-theophile",fullName:"Theophanides Theophile"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"3092",title:"Anopheles mosquitoes",subtitle:"New insights into malaria vectors",isOpenForSubmission:!1,hash:"c9e622485316d5e296288bf24d2b0d64",slug:"anopheles-mosquitoes-new-insights-into-malaria-vectors",bookSignature:"Sylvie Manguin",coverURL:"https://cdn.intechopen.com/books/images_new/3092.jpg",editedByType:"Edited by",editors:[{id:"50017",title:"Prof.",name:"Sylvie",surname:"Manguin",slug:"sylvie-manguin",fullName:"Sylvie Manguin"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"3161",title:"Frontiers in Guided Wave Optics and Optoelectronics",subtitle:null,isOpenForSubmission:!1,hash:"deb44e9c99f82bbce1083abea743146c",slug:"frontiers-in-guided-wave-optics-and-optoelectronics",bookSignature:"Bishnu Pal",coverURL:"https://cdn.intechopen.com/books/images_new/3161.jpg",editedByType:"Edited by",editors:[{id:"4782",title:"Prof.",name:"Bishnu",surname:"Pal",slug:"bishnu-pal",fullName:"Bishnu Pal"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"72",title:"Ionic Liquids",subtitle:"Theory, Properties, New Approaches",isOpenForSubmission:!1,hash:"d94ffa3cfa10505e3b1d676d46fcd3f5",slug:"ionic-liquids-theory-properties-new-approaches",bookSignature:"Alexander Kokorin",coverURL:"https://cdn.intechopen.com/books/images_new/72.jpg",editedByType:"Edited by",editors:[{id:"19816",title:"Prof.",name:"Alexander",surname:"Kokorin",slug:"alexander-kokorin",fullName:"Alexander Kokorin"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"1373",title:"Ionic Liquids",subtitle:"Applications and Perspectives",isOpenForSubmission:!1,hash:"5e9ae5ae9167cde4b344e499a792c41c",slug:"ionic-liquids-applications-and-perspectives",bookSignature:"Alexander Kokorin",coverURL:"https://cdn.intechopen.com/books/images_new/1373.jpg",editedByType:"Edited by",editors:[{id:"19816",title:"Prof.",name:"Alexander",surname:"Kokorin",slug:"alexander-kokorin",fullName:"Alexander Kokorin"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"57",title:"Physics and Applications of Graphene",subtitle:"Experiments",isOpenForSubmission:!1,hash:"0e6622a71cf4f02f45bfdd5691e1189a",slug:"physics-and-applications-of-graphene-experiments",bookSignature:"Sergey Mikhailov",coverURL:"https://cdn.intechopen.com/books/images_new/57.jpg",editedByType:"Edited by",editors:[{id:"16042",title:"Dr.",name:"Sergey",surname:"Mikhailov",slug:"sergey-mikhailov",fullName:"Sergey Mikhailov"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"371",title:"Abiotic Stress in Plants",subtitle:"Mechanisms and Adaptations",isOpenForSubmission:!1,hash:"588466f487e307619849d72389178a74",slug:"abiotic-stress-in-plants-mechanisms-and-adaptations",bookSignature:"Arun Shanker and B. Venkateswarlu",coverURL:"https://cdn.intechopen.com/books/images_new/371.jpg",editedByType:"Edited by",editors:[{id:"58592",title:"Dr.",name:"Arun",surname:"Shanker",slug:"arun-shanker",fullName:"Arun Shanker"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"878",title:"Phytochemicals",subtitle:"A Global Perspective of Their Role in Nutrition and Health",isOpenForSubmission:!1,hash:"ec77671f63975ef2d16192897deb6835",slug:"phytochemicals-a-global-perspective-of-their-role-in-nutrition-and-health",bookSignature:"Venketeshwer Rao",coverURL:"https://cdn.intechopen.com/books/images_new/878.jpg",editedByType:"Edited by",editors:[{id:"82663",title:"Dr.",name:"Venketeshwer",surname:"Rao",slug:"venketeshwer-rao",fullName:"Venketeshwer Rao"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"4816",title:"Face Recognition",subtitle:null,isOpenForSubmission:!1,hash:"146063b5359146b7718ea86bad47c8eb",slug:"face_recognition",bookSignature:"Kresimir Delac and Mislav Grgic",coverURL:"https://cdn.intechopen.com/books/images_new/4816.jpg",editedByType:"Edited by",editors:[{id:"528",title:"Dr.",name:"Kresimir",surname:"Delac",slug:"kresimir-delac",fullName:"Kresimir Delac"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}}]},chapter:{item:{type:"chapter",id:"57874",title:"Potassium Nutrition in Plants and Its Interactions with Other Nutrients in Hydroponic Culture",doi:"10.5772/intechopen.71951",slug:"potassium-nutrition-in-plants-and-its-interactions-with-other-nutrients-in-hydroponic-culture",body:'\nLight, water, and nutrients are the three essential elements for plant growth and reproduction. The nutritional factor is concerned with the content, as well as understanding the important differences between the agricultural systems and managing the plants to provide nutrients. Water-soluble inorganic chemicals are absorbed by plant roots, and these are essential plant nutrients. Plant nutrients are taken up by the plant through many biological transformations that determine when and how plants will take them.
\nApproximately 17 chemical elements play an important role in plant growth. Carbon, oxygen, and hydrogen are derived from air and water. They form the dry part of the plant. They are obtained by photosynthesis and are not considered “nutrient” elements. Nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), boron (B), molybdenum (Mo), chlorine (Cl), and nickel (Ni) elements are obtained from the soil or hydroponic nutrient solution. Nutrient elements are essential for all plants. For some plant species, sodium, silicon, and nickel are basic nutrients and provide positive contributions to their growth, although they are not necessary for other plant species. It is imperative that the cobalt element is used for nitrogen fixation by legumes. Additional elements, such as selenium and iodine, are not necessary for plants but are necessary for humans and plant-consuming herbivores. Thus, it can be used as a nutrient for plants [1].
\nPotassium, together with N and P, plays an important role in plant development. It is an important macronutrient for plants having many functions such as plant nutrition, activation of numerous enzymes, and protection of electrical potential gradients in cell membranes. It is also considered as an important cation that protects the anion-cation balance. Turgor regulation and osmotic regulation in plants are greatly controlled by potassium ion. In addition, potassium is responsible for balanced transport of water to the plant [2].
\nPotassium is often referred to as a quality element for plant production [3] and has proven to have a crucial role in many product quality parameters. Product quality parameters such as fruit size, appearance, color, soluble solids, acidity, vitamin content, taste, and shelf life are affected positively by supplying K in sufficient quantity. These properties are influenced by photosynthesis, translocation of photosynthesis, protein synthesis, regulation of stomata, activation of enzymes, and many other processes. The tolerance of potassium to environmental stresses, such as drought, excess water, wind, high and low temperature, and the role of potassium in plant water regulation are factors that increase the productivity of trees and the quality of fruits. Plants are extremely sensitive to diseases and pests. Optimum feeding of K comes from above these troubles. In addition, other effects of potassium can be listed as follows: high fruit juice content, high C vitamin content, acceleration of ripening of fruits, and resistance to physical degradation during transport and storage [4].
\nPotassium has two main functions in terms of water and nutrients in plants:
It plays an important role in the activation of basic enzymes for the production of proteins and sugars. For this biochemical function, K is required in small quantities.
Potassium protects the water content in plants. Thus, as a biophysical function, it helps to maintain the turgor of the cells. Turgid cells protect the vitality of the leaf. Therefore, photosynthesis proceeds efficiently.
The relationship between the water and the nutrient content of the cell controls both the transfer of sugars produced by photosynthesis to the fruit storage organs and the transfer through the plant. The amount of potassium consumed in biophysical functions is higher than the amount spent in biochemical functions [5].
\nIn order for plant growth to be healthy, all the essential nutrients are important at the same time. But there are huge differences in the quantities to be given to the plants. N, P, and K are primary macronutrients that should be given in amounts of about 50–150 lbs/acre. Ca, Mg, and S should be considered as secondary macronutrients required in quantities of about 10–50 lbs/acre. Micronutrient nutrients (Fe, Mn, Zn, Cu, B, Mo, and Cl) are generally necessary in quantities less than 1 lb/acre.
\nPotassium is found in a nutrient solution as almost completely free ion (K cation). Potassium ions or potassium cations play a role in the cation exchange capacity (CEC). CEC prevents soluble cations from leaking out of the plant root. Potassium ions can swiftly exchange with other soluble ions [6].
\nMost of the plant nutrients are ionic. The K cation is a place of importance in the hydroponic nutrient solution. In many stages of the plant’s nutrient uptake and afterward, the potassium cation plays an important role. The additive provided by the potassium is either direct or indirect. Indirect effects also result from the cationic property of potassium. There are several parameters that provide these effects. These parameters can be expressed as cation exchange capacity (CEC), pH value, electrical conductivity (EC), root temperature, total ionic concentration, osmotic pressure. In the hydroponic nutrient solution, due to the presence of K cation, the amount of some ions is suppressed, while the amount of other ions is increased. In all these cases, there is a balance effect.
\nThe aim of this chapter is to emphasize the importance and role of potassium ion in the nutrient solution in the hydroponic system. The hydroponic system provides a controlled nutrient for the plant. Macronutrients and micronutrients required by the plant are given to the plant by controlled nutrient solution. Controlled nutrient supply increases the yield of the plant. The importance of potassium cations in transporting nutrient solutions to plants is great. Due to the cation exchange capacity, potassium ion affects many factors such as pH value, osmotic pressure and electrical conductivity in the nutrient solution given to the plant. These factors have an effective role in the productivity of the plant as well as in the nutrient uptake. The potassium ions enter the interaction and exchange process with other ionic nutrients through the cation exchange process in the hydroponic system. Therefore, this nutrient is an indispensable element of the hydroponic system. All these cases will be explained separately in the chapter.
\nIn hydroponic culture, nutrient solutions are the only source of plant nutrition. A solution containing all the plant nutrients must be applied in the correct balance. For the selection of fertilizers and preparation of hydroponic nutrient solutions, the following factors should be considered:
Concentration of harmful elements such as sodium, chloride and boron, salinity and water quality should be considered.
The concentration values of the necessary nutrients in the hydroponic nutrient solution should be well adjusted.
Nutrient balance should be provided in the nutrients that the plants receive.
The pH value of the hydroponic nutrient solution should be considered and the effect of the pH value of the hydroponic nutrient solution on the uptake of nutrients by the plants should be investigated.
In Table 1, it is shown common nutrient ranges in the hydroponic nutrient solutions. Table 2 shows the recommended nutrient solutions for various plants [6].
\nElement | \nIonic form absorbed by plants | \nCommon range (ppm = mg/l) | \n
---|---|---|
Nitrogen | \nNitrate (NO3−), Ammonium (NH4+) | \n100–250 ppm elemental N | \n
Phosphorus | \nDihydrogen phosphate (H2PO4−), phosphate (PO43−), monohydrogen phosphate (HPO42−) | \n30–50 ppm elemental P | \n
Potassium | \nPotassium (K+) | \n100–300 ppm | \n
Calcium | \nCalcium (Ca2+) | \n80–140 ppm | \n
Magnesium | \nMagnesium (Mg2+) | \n30–70 ppm | \n
Sulfur | \nSulfate (SO42−) | \n50–120 ppm elemental S | \n
Iron | \nFerrous ion (Fe2+), ferric ion (Fe3+) | \n1–5 ppm | \n
Copper | \nCopper (Cu2+) | \n0.04–0.2 ppm | \n
Manganese | \nManganese (Mn2+) | \n0.5–1.0 ppm | \n
Zinc | \nZinc (Zn2+) | \n0.3–0.6 ppm | \n
Molybdenum | \nMolybdate (MoO42−) | \n0.04–0.08 ppm | \n
Boron | \nBoric acid (H3BO3), Borate (H2BO3−) | \n0.2–0.5 ppm elemental B | \n
Chloride | \nChloride (Cl−) | \n<75 ppm | \n
Sodium | \nSodium (Na+) | \n<50 ppm TOXIC to plants | \n
The common nutrient range values of the ionic form of the elements absorbed by plants.
Crop | \nN | \nP | \nK | \nCa | \nMg | \n
---|---|---|---|---|---|
Concentration in mg/l (ppm) | \n|||||
Tomato | \n190 | \n40 | \n310 | \n150 | \n45 | \n
Cucumber | \n200 | \n40 | \n280 | \n140 | \n40 | \n
Pepper | \n190 | \n45 | \n285 | \n130 | \n40 | \n
Strawberry | \n50 | \n25 | \n150 | \n65 | \n20 | \n
Melon | \n200 | \n45 | \n285 | \n115 | \n30 | \n
Roses | \n170 | \n45 | \n285 | \n120 | \n40 | \n
The necessary quantities of the elements found in the nutrient solution for various plants.
Total salts dissolved in the hydroponic nutrient solution are considered as a measure of electrical conductivity (EC). EC is a parameter used to follow the fertilization process. EC-related data do not reflect the mineral content of the nutrient solution.
\nThe hydroponic nutrient solution is recirculated in closed hydroponic systems. Thus, the elements (sodium, chloride, fluoride, etc.) that are not absorbed in high amounts by the plants or the ions released by the plant are deposited in the hydroponic nutrient solution. In this case, the electrical conductivity (EC) cannot provide information about the content of the nutrient solution.
\nThe cation exchange capacity (CEC) is the cornerstone of hydroponic nutrition. The effect of potassium cation in cation exchange capacity is indisputable. The cation exchange provides the following conditions:
The cation exchange is the major nutrient (macronutrient) reservoir of K+ (Monopotassium phosphate/potassium sulfate, potassium nitrate, potassium phosphate, and ammonium phosphate), Ca2+, and Mg2+.
It is necessary to keep the nitrogen (N) in the form of ammonium (NH4+).
The cation exchange helps to provide micronutrient trace metals such as Zn2+ and Mn2+ in a certain amount.
The cation exchange provides resistance to the changes in pH as well as maintaining plant nutrients.
In Figure 1, the cation exchange capacities on the surfaces of clay particles and organic materials with negatively charged sites holding positively charged ions are compared.
\nThe appearance of the surfaces of clay particles and organic matter with negatively charged sites that hold positively charged ions.
Mo and Mg are present at higher pH than most nutrients. On the other hand, trace metals such as Fe, Zn, and Mn are found at a lower pH than most nutrients. The ideal pH value for many plants is about 5.8 to 7.0. The values in this range are a balanced source for all nutrients [6].
\nThe hydroponic nutrient solution should be checked frequently. This process provides information about the time of replacement of the nutrient solution or the time of dilution with fresh water. The ideal pH range for hydroponic nutrient solution is 5.8–6.3. For many plants, the optimum pH range is shown in Figure 2. The pH value of the micronutrients is usually below the limit value. If the pH levels fall below 5.5, the risk of micronutrient toxicity and also the impairment of calcium and magnesium accelerate. In the closed system hydroponics, the influence of the roots on the pH value of the hydroponic solution is great. This causes pH fluctuation. Sulfuric acid, phosphoric acid, and nitric acid are used to increase the acid value of the hydroponic nutrient solution. One of the most important factors affecting the pH value of the nutrient solution is the addition of ammonium/nitrate.
\nThe ideal pH range of the elements in the hydroponic nutrient solution used for most of the crop plants.
The minerals found in raw water and the nutrients supplied by fertilization are the two main factors that bring the hydroponic nutrient solution. The quality of the raw water greatly affects the choice of fertilizers and their concentration in the hydroponic nutrient solution. For this reason, the quality and content of the raw water should be tested before proceeding to the fertilizer formulation for fertilization. Trace elements such as boron, manganese, iron and zinc and minerals such as calcium, magnesium, and sulfur are likely to be present in the source water. Therefore, while the hydroponic nutrient solution is being prepared, the effect of these elements must also be taken into account. In addition, undesirable minerals such as sodium, chloride, or fluoride can be present in raw water. For the hydroponic nutrient solution, the presence of these minerals is undesirable. To get rid of such a situation, the following actions can be taken:
Raw water can be diluted by adding pure water.
Raw water can be desalted.
Ion exchange is possible [6].
The overturning and pumping of the nutrient solution can be expressed as tank exchange operations. These operations are done at a certain time/frequency. Tank exchange is one of the factors that can be controlled in hydroponic systems. There are many different ways to save time during tank exchange. One of these is the addition of a small amount of nutrient concentrate to the most consumed nutrient ions. In general, N, K, and P constitute the content of the added nutrient concentration. In a previous study, the content of daily-added nutrient concentrate was applied as 10 ppm for N and P and 15 ppm for K [7].
\nThe addition of source water and calcium nitrate causes the Ca ion to increase in some solutions. To avoid Ca addition, potassium nitrate and monopotassium phosphate are added to fertilizer materials. In addition, if the addition of potassium nitrate and monopotassium phosphate can limit the Ca value in solution, fertilization formulations are regulated by a lower Ca starting value. The nutrient tank change test provides information on how the additions of nutrients compare to tank change in normal and low calcium nutrient formulations. Researchers conducting such a test could form four different nutrient solutions. These are detailed in Tables 3 and 4 [7].
\nNutrient/ion | \nInitial normal (1) | \nInitial low calcium (2) | \nAt tank change normal (3) | \nAt tank change low calcium (4) | \n
---|---|---|---|---|
Nitrogen | \n119 | \n127 | \n129 | \n129 | \n
Phosphorus | \n28 | \n31 | \n26 | \n31 | \n
Potassium | \n200 | \n233 | \n188 | \n231 | \n
Calcium | \n110 | \n78 | \n116 | \n86 | \n
Magnesium | \n30 | \n33 | \n32 | \n36 | \n
Sulfur | \n97 | \n93 | \n111 | \n111 | \n
Sodium | \n72 | \n72 | \n86 | \n86 | \n
Chloride | \n24 | \n24 | \n28 | \n27 | \n
Boron | \n0.1 | \n0.11 | \n0.12 | \n0.12 | \n
Manganese | \n0.04 | \n0.07 | \n0.04 | \n0.05 | \n
Copper | \n0.08 | \n0.08 | \n0.07 | \n0.08 | \n
Zinc | \n0.06 | \n0.07 | \n0.06 | \n0.08 | \n
Examination of tank change situation in normal and low calcium nutrient formulation.
Nutrient/ion | \nNormal change (1) | \nLow calcium change (2) | \nNormal no change (3) | \nLow calcium no change (4) | \n
---|---|---|---|---|
Nitrogen | \n61 | \n38 | \n41 | \n48 | \n
Phosphorus | \n26 | \n33 | \n75 | \n81 | \n
Potassium | \n68 | \n116 | \n244 | \n285 | \n
Calcium | \n172 | \n118 | \n95 | \n70 | \n
Magnesium | \n44 | \n52 | \n25 | \n29 | \n
Sulfur | \n197 | \n206 | \n168 | \n167 | \n
Sodium | \n112 | \n115 | \n114 | \n111 | \n
Chloride | \n25 | \n24 | \n28 | \n26 | \n
Boron | \n0.11 | \n0.13 | \n0.09 | \n0.10 | \n
Manganese | \n<0.01 | \n<0.01 | \n<0.01 | \n<0.01 | \n
Copper | \n0.09 | \n0.11 | \n0.06 | \n0.07 | \n
Zinc | \n0.05 | \n0.06 | \n0.02 | \n0.03 | \n
Nutrient solutions for which there is no effect of tank replacement for normal and low calcium nutrient formulation.
The researchers noted the following perspectives in their work:
During the production, a tank change was made in the normal solution.
There is no tank change in the normal solution. In further treatment, daily KNO3 and KH2PO4 additions were made after the tank change.
During the production, a tank change was made in the low calcium solution.
There is no tank change in low calcium solution. In further treatment, daily KNO3 and KH2PO4 additions were made after the tank change [7].
In order to evaluate the data obtained for both the plant and the solution, the following results were noted:
No significant difference was observed between the final fresh weight yields in the four treatments.
There were no significant differences in tipburn ratings.
There was some variability in tipburn ratings among treatments. It is envisaged that less frequent tank changes can do this.
The starting point of the solution conditions prepared by the producers should be closely monitored.
The relationship between the individual conditions in the source water and other parameters should be examined.
The most detrimental properties of the solution are the increase in S and Na content by the end of the process. In this case, it is necessary to lower the pH. For this, a nitric acid solution should be used instead of the sulfuric acid solution. Instead of increasing the K level by the addition of KNO3, the N level is increased by the addition of the nitric acid solution. Thus, the accumulation of S in solution is also reduced.
The effect of source water increases the Na level in the solution. Na level is more difficult to change. Determination of increased Na levels in time is important.
In this study, it was observed that some micronutrient items such as Mn were at lower levels. If the tank change intervals are to be increased, the daily additions should be selected from the most commonly used micronutrients. At regular tank change intervals, higher initial values should be applied to avoid deficiencies [7].
Potassium, which is present as a free ion in almost all nutrient solutions, has a pH value of 2–9 [8]. Like potassium, calcium and magnesium also have a wide pH range. However, the presence of calcium and magnesium is limited due to the presence of other ions. Therefore, if the nutrient solution contains substances above pH 7; Fe2+, Mn2+, PO3−4, Ca2+, and Mg2+ precipitate to the salts. This means that the nutrients received by plants are restricted [9].
\nGrowth, development, and production of plants are based on the total ionic concentration of the nutrient solution [10]. The ions of the dissolved salts in the nutrient solution have a colligative ability for nutrient solutions. This property is caused by a force called osmotic pressure (OP). The osmotic pressure depends on the amount of dissolved substances [11]. In addition, the dissolution potential or osmotic potential terms are commonly used in nutrient solutions. Within the nutrient solution, dissolved substances have significant effects on water potential. Solvents reduce the free energy of the water by diluting the water [12]. The salt concentration determines the total amount of salts in a solution. Electrical conductivity (EC) is an index of salt concentration. Thus, the osmotic pressure of the nutrient solution is indirectly determined by the electrical conductivity (EC) parameter. EC of the nutrient solution is therefore a good indicator of the amount of ions in the root zone of plants [13].
\nElectrical conductivity or osmotic pressure is the first investigated parameter for the concentration of nutrient solution. The regulation of pH and the root temperature are also other important factors investigated for yield and quality [14]. Nutrients and water absorbers from the nutrient solution continually reinforce their electrical conductivity (EC). Thus, while the concentrations of some ions are reduced, the concentrations of some ions are also increased. This situation occurs both in closed and open hydroponic systems at the same time. For example, in a closed hydroponic system with rose production, the nutrient solution in the tank was controlled, and the results showed that the Fe concentration dropped very rapidly, while Ca2+, Mg2+, and Cl− increased. In addition, there is no critical condition in the concentration levels of K+, Ca2+, and SO42− [15]. The reuse of nutrient solutions requires regulation of EC. The reuse of nutrient solutions has been shown in various studies that have presented positive results for sustainable agricultural production systems [16]. In one of these studies, Brun et al. [17] reduced the EC by adding a water complex to the drainage; has reached the desired EC using recycling systems containing a complementary nutrient solution.
\nThe ions which are active on EC are Ca2+, Mg2+, K+, Na+, H+, NO3−, SO42−, Cl−, HCO3−, and OH− ions [18]. Micronutrients such as Fe, Cu, Zn, Mn, B, Mo, and Ni do not have a significant effect on EC, since they are less likely to be taken up by plants than macronutrients [19].
\nThe nutrient solutions contain essentially six nutrients together with Ca, Mg, and S, with preference for K, N, and P. The ionic mutual ratio was developed by Steiner (1961). This concept is based on the mutual ratio of anions such as NO3−, H2PO4−, and SO42− and the mutual ratio of cations such as K+, Ca2+, and Mg2+. Such a ratio affects not only the total amount of each ion in solution but also the quantitative relationship that holds the ions together [10].
\nSoilless cultivation provides various viable and controllable possibilities to increase quality of crops and production. Parameters such as temperature, pH, electrical conductivity, and oxygen content in the nutrient solution are traceable. It is essential that these parameters are checked in a timely and accurate manner so that the advantage does not become a disadvantage [15].
\nWhen the temperature of the nutrient solution increases, the consumption of O2 increases. If ventilation in the root is not sufficient, the concentration of CO2 in the root increases [20]. In some vegetables, various investigations have been carried out on the reduction of CO2concentration by using potassium peroxide, which acts as an oxygen source [21].
\nPotassium is the most desirable cationic minerals for plants and constitutes 10% of the plant dry matter. Due to the reductions in KNO3 fertilizers in the nutrient solution, the dry matter content of leaves, crowns, and roots decreased significantly. This slowed down growth and reduced the number of leaves [22]. There are a number of investigations reporting that the stomatal conductance is decreasing due to the lack of K. Accordingly, it has been reported that CO2 fixation and phloem export are also decreasing [23]. In addition, in maize and wheat production, insufficient K levels have been observed to increase the yield of these products [24].
\nVarious effects of K nutrition should be considered taking into account the total ion concentration (EC). At K nutrition, the relationship of K to other cations should be investigated. Among these cations, Ca, Mg, and Na in the saline irrigation water are primarily present. As a result of increasing K/Ca ratio, the storage quality is improved. In addition, flavor factors such as sugar and acid content have been increased [25].
\nPoor water quality can lead to excessive concentrations of NaCl in the nutrient solution. Therefore, the nutrient-ion activities may decrease and the ratios of Na+:Ca2+, Na+:K+, Ca2+:Mg2+, and Cl−:NO3− may increase [26]. This can lead to osmotic and specific-ion damage, nutritional deficiencies, and reduced yield and quality in the plant. It was investigated by Grattan and Grieve that NaCl salinity on the tissue may have a repressive effect on the concentrations of micronutrites and macronutrients (N, P, K, Ca, Mg, and S) [26].
\nPotassium is of vital importance for plants nutrition. In hydroponic systems, the presence of potassium in nutrient solutions affects the processes such as growth, development, and conservation of plants in a positive way. Potassium cation has many tasks in many processes compared to other nutrients. These processes affecting the development of plants can be listed as the cation exchange capacity (CEC), the pH value, electrical conductivity (EC), the root temperature, total ionic concentration, the dissolution potential (osmotic potential), the ionic mutual ratio, the mutual ratio of anions, the mutual ratio of cations, oxygen content, and CO2concentration.
\nStress corrosion cracking (SCC) in chemical, petrochemical, and power plant industries is an insidious form of corrosion, which causes a lot of financial losses and human damages [1, 2, 3, 4, 5]. This phenomenon is associated with a combination of tensile stress, environment, and some metallurgical conditions as described in Figure 1.
The essential requirements for SCC.
During stress corrosion cracking, the metal or alloy is virtually unattacked over most of its surface, while fine and branch cracks progress through the bulk of material [6]. It is shown in Figure 2. This cracking phenomenon has serious consequences since it can occur under stresses much lower than design stresses and lead the equipment and structures to premature failures [7, 8, 9, 10, 11].
Crack development in carbon steel exposed to nitrate solution.
Stress corrosion cracking starts from corrosion sites at the material surfaces and progresses into a brittle manner. The process of cracking is not strictly a mechanical process, as the corrosivity of the environment strongly affects the fracture mode. Both intergranular and transgranular stress corrosion cracking are observed. Intergranular cracking proceeds along grain boundaries, while transgranular cracking advances without apparent preference for boundaries [12]. An example of stress corrosion cracking in which the crack has progressed in both intergranular and transgranular paths is shown in Figure 3. The development mode of cracking depends on the composition and microstructure of the material and environment.
Intergranular and transgranular stress corrosion cracking of the AISI 316L stainless steel at polythionic acid environment [8].
In this chapter, the conditions for the occurrence of SCC are first introduced. Then, the stress corrosion cracking mechanism for various materials in conditions that are susceptible is discussed in detail. The design of industrial structures and components is usually based on tensile properties, which have many disadvantages. So, the science of fracture mechanics applies in the situations prone to SCC because of the inevitability of manufacturing and service defects in materials and for considering the role of such imperfections. Methods of prevention based on corrosion science and empirical data are presented. Finally, practical examples are given to better understand the issue.
Not all metal-environment combinations are susceptible to cracking. In other words, the environment for occurrences of SCC for each metal or alloys is specific. Also, the resources of stress for each case of failure may be different.
Austenitic stainless steels suffer from SCC in chlorides, caustic, and polythionic acid. When austenitic stainless steels with sufficient carbon content (more than 0.03 wt.%) are heated in the range of 415–850°C, their microstructure becomes susceptible to precipitation of chromium carbides (M23C6) along grain boundaries known as sensitization [9, 12, 13]. Formation of Cr-rich carbides along grain boundaries may drastically deplete free chromium content in the area adjacent to the grain boundaries and render them susceptible to rapid preferential dissolution. Sensitized steels are most susceptible; the stress corrosion cracking of nonsensitized steels is also observed [14, 15]. Dissolution of grain boundaries in some corrosive environments aside from tensile stress led these types of materials to SCC.
Seasonal cracking of brass in the rainy season in an ammoniacal environment is another classical example of SCC. This was first identified on the brass cartridge used by the British Army in India. Since it is usually identified during the rainy season, it is also called seasonal cracking [12]. Alpha brass is an alloy of Cu-Zn. It can crack either intergranularly or transgranularly in nontarnishing ammonia solutions, depending on its zinc content [16, 17, 18]. Transgranular stress corrosion cracking, TGSCC, is observed in alloys with 20 or 30% Zn but not in alloys with 0.5 or 10% Zn [19, 20]. Stress corrosion cracking of Cu-Zn and Cu-A1 alloys in cuprous ammonia solutions can only occur when the parting limits for dealloying are exceeded. The parting limits are about 14 and 18 a/o for Cu-A1 and Cu-Zn, respectively [21]. Cu-A1 and Cu-Ga alloys have shown similar behaviors [19, 22].
Aluminum and all its alloys can fail by cracking along grain boundaries when simultaneously exposed to specific environments and stresses of sufficient magnitude [23, 24]. Of eight series of aluminum alloys, 2xxx, 5xxx, and 7xxx aluminum alloys are susceptible to SCC. Among them, 7xxx series aluminum alloys have a specific application in aerospace, military, and structural industries due to superior mechanical properties. In these high-strength 7xxx aluminum alloys, SCC plays a vital factor of consideration, as these failures are catastrophic during the service [25].
Carbon and low alloy steels have shown SCC in a wide range of environments that tend to form a protective passive or oxide film [26, 27, 28, 29, 30]. The environments that would passivate carbon steels have been found to cause SCC, including strong caustic solutions, phosphates, nitrates, carbonates, ethanol, and high-temperature water. The problems are important for both economic and safety reasons, due to the extensive use of carbon steels [31]. For example, nitrate cracking in an ammonium nitrate plant caused by catastrophic failures and a lot of financial losses. Caustic cracking of steam-generating boilers made of low alloy steels was a serious problem, which led an ammonia plant to repeated emergency shutdowns.
Stress corrosion cracking may be a problem whenever certain high-strength titanium alloys are exposed to aqueous and certain solvent environments [32, 33, 34, 35, 36]. For the first time, SCC of titanium was reported by Kiefer and Harple who describe the cracking phenomena with commercially pure titanium in red fuming nitric acid [37]. Hot salt cracking of titanium alloys was reported in turbine blades that operate at high temperature in the mid-1950s. The subject became very active in the early 1960s because of the SCC problem connected to these alloys in a transportation program [38].The first known report of stress corrosion cracking of titanium alloys in room temperature aqueous environments was that of Brown. He found that titanium alloys, 8% aluminum–1% molybdenum–1% vanadium alloy (Ti, 8–1–1), were susceptible to SCC in seawater [38].
Another requirement for SCC to occur is a corrosive environment. The environments for SCC are specific because not all environments promote SCC. For those alloys that develop a protective film, an aggressive ion is required to promote SCC. The aggressive media to passive layer of stainless steels are chlorides, caustic, and polythionic acid. The austenitic stainless steel series 300 is more susceptible in an environment containing chlorides. Chlorides will not cause SCC unless an aqueous phase is present. It appears that stress corrosion cracking in austenitic stainless steels in the presence of chlorides proceeds transgranularly and usually occurs at temperature above 70°C
Metal | Environment |
---|---|
Al alloys | NaCl-H2O2 solutions |
NaCl solutions | |
Seawater | |
Copper alloys | Ammonia vapor and solutions |
Amines | |
Water or water vapor | |
Gold alloys | FeCl3 solutions |
Acetic acid-salt solutions | |
Inconel | Caustic soda solutions |
Lead | Lead acetate solutions |
Magnesium alloys | NaCl-Na2CrO4 solutions |
Rural and coastal atmospheres | |
Seawater | |
Distilled water | |
Nickel | Fused caustic soda |
Steels | NaOH solutions |
NaOH-Na2SiO4 solutions | |
Calcium, ammonium, and sodium nitrite solutions | |
Mixed acids (H2SO4-HNO3) | |
Acidic H2S solutions | |
Seawater | |
Carbonate-bicarbonate solutions | |
Stainless steels | Acidic chloride solutions |
NaCl-H2O2 solutions | |
Seawater | |
H2S | |
NaOH-H2S solutions | |
Condensing steam from chloride waters | |
Titanium alloys | Red fuming nitric acid |
Seawater | |
Methanol-HCl |
The stress in the form of tensile (not compressive) plays a key role in the SCC fracture processes. In fact, SCC would never have occurred in the absence of stress. The required tensile stresses may be in the form of directly applied stresses, thermal, in the form of residual stresses, or a combination of all [8, 50]:
For SCC to occur alone by applied stress, it must have a very high magnitude. The welding and mechanical residual stresses are the main sources of stress attributed to the stress corrosion cracking. The welding residual stress is produced as a result of nonuniform temperature changes during welding operation and can be calculated from thermal strain vectors.
The thermal strain vector,
in which
The operational thermal stress can also be calculated from Eq. 2. Mechanical workings such as cold deformation and forming, machining, and grinding are the other sources, which introduce residual stresses [8, 51].
Extensive investigations have been devoted to find mechanisms of SCC for different materials and environments. An SCC failure illustrates the combined effects of mechanical, physical, and chemical/electrochemical factors causing the separation of metal bonds at the crack tip, thereby advancing the crack. Three mechanisms for SCC have been proposed through the investigations [52]:
This model supposes that there are pre-existing paths in an alloy that is susceptible to anodic dissolution. Because of precipitation or solute segregation of impurities like sulfur, phosphorus, and chromium carbides, the electrochemical properties of the matrix and segregates are changed. The area adjacent to the grain boundaries is depleted from one or more alloying elements, and so under such conditions, localized galvanic cells are created (Figure 4). Since precipitation or segregation is generally anodic to the matrix of the grains, dissolution under an anodic reaction occurs and provides active path for localized corrosions [53]. Also, the removal of the protective film at the pre-existing crack tips by plastic deformation would facilitate the onset of localized corrosion.
Galvanic cell mechanism [52].
This mechanism has been extensively studied in stress corrosion cracking of alpha brass in ammoniacal environment and also proposed for caustic cracking of boiler steel. The model is based on the idea of a strain-induced rupture of the protective film, and so plastic strains play a main role in failure processes [52, 55]. The theory assumes the existence of a passivation film on a metal surface. The passivation film protects the underlying metal against corrosive agents. The passivation film is ruptured by plastic strain due to mechanical workings. After the film is ruptured, the bare metal is exposed to the corrosive environment. The processes of disruptive strain (disruption of protective film) and film formation (due to repassivation) have occurred and alternate with each other. The crack propagates when the rate of rupture of oxide film is higher than the rate of repassivation of the film [52]. The mechanism is shown in Figure 5.
Strain-generated active path mechanisms. (A) Film rupture model and (B) slip-step dissolution model [52].
This model is based on the effects of environmental species on interatomic bond strength. The theoretical fracture stress required to separate two layers of atoms of spacing b is given by [56].
where E is the Young modulus, γ is the surface energy, and b is the spacing between atoms.
This theory implies that if surface energy is reduced, then
The design of steel structure and component based on tensile properties has many disadvantages that do not take into account the role of imperfections. Fracture mechanic introduces another material characteristic, namely, fracture toughness, KIC, which considered the role of cracks and imperfection in the form of cracks in designs. In its simplest form [57].
where
According to this equation, fracture occurs when stress intensity factor,
Effects of corrosive environment on fracture toughness [12].
Since the exact mechanism of SCC has not been completely understood, prevention methods are either general or empirical in nature. Appropriate strategy should be done in order to minimize this problem to ensure not only the safety of human life but also the safety of cost. The following general methods are recommended to overcome the SCC problems [12, 52, 58, 59]:
Lowering the tensile stress in the welded component using post weld heat treatment. The post weld heat treatment reduced or eliminated residual stress on surface and through the bulk of material. Plan and low alloy steels may be a stress relief at 1100–1200°F. The range of residual stress relief temperature for austenitic stainless steels is from 1500 to 1700°F. Reduction of tensile stresses by shot peening is also recommended. Shot peening introduces surface compressive stresses.
Eliminating aggressive agents from the environment by, for example, degasification, demineralization, or distillation.
Changing the alloy is one possible solution if neither the environment nor stress can be changed. For example, it is a common practice to use Inconel (raising the nickel content) when typ. 304 stainless steel is not satisfactory.
Applying cathodic protection: impressed current cathodic protection system has been successfully used to prevent SCC of steels.
Adding inhibitors to the system if feasible: high concentrations of phosphate have been successfully used.
Coatings are sometimes used, and they depend on keeping the environment away from the metal.
After only 3 years’ service of a circulation water heater (heat exchanger), it has been shown to sever leakage and has led a methanol plant to emergency shutdown. An on-site investigation revealed extensive cracking initiated at weld area and through the tube sheet holes as it is shown in Figure 7.
Failed area (a) cracks extending in the weld joint of tube sheet to plugs and (b) branched cracks in the surface of the tube sheet and through the holes [8].
The circulation water heater is a vertical U-type heat exchanger made of austenitic stainless steels. The equipment used to decline reforms gas temperature in a methanol plant. The hot reformed gas at approximately 385°C entered the tubes and is cooled down to 168°C by exchanging the heat with processed water in the shell. The gases that flow through the tubes are mainly CO2, CO, H2, CH4, and N2 and at a pressure of 3.9 MPa. At the shell cooling process, water flows with about 6 MPa pressure.
Deposits had formed on top of the tube sheet due to shutdown errors. AISI 316L materials overheated in service because of the insulation role of the deposits. Material sensitization occurs since overheating. The presence of sulfur in the process gas aside from moisture formed polythionic acid during shutdowns. Residual stress produced by heavy machining and welding aside from operational thermal stress provided tensile stress, which is needed for SCC. Stress corrosion cracking is induced by polythionic acid. Concentrated water with other aggressive agents such as caustic and chlorides leaked through the cracks aid the failures.
Cleaning of the shell by demineralized water after each shut down in order to prevent the forming of insulating deposits above the tube sheet
Reduction of sulfur in feeding gas
Reduction of caustic and chlorides in processed water
Carryover of caustic soda (NaOH) in the steam path caused catastrophic failure of superheater stainless steel tubes in a gas-fired heater and led to an unexpected shutdown after just 5 months of continuous service following the start of production. The failure areas are shown in Figure 8. Three types of cracks are identified in various regions of the tube: circumferential cracks adjacent to the seam weld, circumferential cracks at the ribbon of the seam weld, and longitudinal cracks on the U-bend. The path of cracks was complex on the surface or in the bulk metal; all had nucleated from inside the tubes. A visual inspection revealed a white deposit, high in sodium, around the cracks on the surface of the tubes.
(a and b) Circumferential cracks adjacent to the seam weld, (c and d) circumferential cracks at the ribbon of seam weld, and (e) longitudinal cracks on the U-bend [9].
The superheater tube material was made of AISI 304H austenitic stainless steel material.
The gas-fired steam heater (FH) generates high-pressure (HP) steam for turbines for the processing of methanol. Demineralized water for the boiler and subsequent steam path is prepared in the water treatment unit. Caustic soda is injected to demineralized water for pH control. The water is transferred to the preheat exchangers, is converted to saturated high-pressure steam at 325°C and 119 MPa, and is sent to the FH. Through the FH tubes, saturated steam converted to supersaturate steam at a temperature of 505°C and pressure of 119 MPa.
The main cause of crack initiation was the increase of pH due to the rise of caustic concentration in condensed drops. Sensitized austenite grains caused by chromium carbide depletion adjacent to the grain boundaries were attacked by concentrated caustic in the HAZ metal and U-bend area and led the heater to the caustic SCC failure.
Using A335 Grade P9, a low alloy steel tube shows higher resistance to SCC than AISI 304H stainless steel
Proper discharge of the tubes during shutdowns to prevent the formation of the concentrated deposits of caustic through the tubes
After a general overhaul of a thermal power plant in Serbia in November 2014, failure of hundreds of brass condenser tubes occurred during the hydrostatic test. Also, it was noted that some backing plates had fallen off from the tubes before this test. Fracture is observed only in condenser tubes of brass, as can be seen in Figure 9.
Failure of brass condenser tubes near joining location with backing plate.
The failed tube material of the condenser was made of brass CuZn28Sn1 (admiralty brass). The cooling water (roughly filtered river water) flows through the tubes, while the hot steam flows around the tubes.
Analysis of fracture surfaces using scanning electron microscopy (SEM) has shown the brittle transgranular fracture due to the occurrence of SCC. The condenser tubes are made of brass CuZn28Sn1. Ammonia and other nitrogen compounds in the cooling water through the tubes were found. These compounds are specific agents that cause stress corrosion cracking (SCC) in brass. In the joining region of condenser tubes to backing plates, there are residual tensile stresses. During the floods in May 2014, there was an increase in the concentration of ammonia and other nitrogen compounds in the river cooling water flowing through the condenser tubes. Failure of brass condenser tubes occurred due to SCC, because the necessary conditions for the SCC occurrence were fulfilled.
The risk of SCC in brass condenser tubes can be reduced if specific substances responsible for SCC occurrence are removed, as much as possible. This can be achieved by cleaning and drying the tubes immediately after the operation delay of the power plant.
Another way to reduce the risk of SCC occurrence in condenser tubes is the replacement of existing tubes (made of brass CuZn28Sn1, very susceptible to SCC) with tubes made of alloys of greater resistance to SCC, such as copper-nickel alloys or Bi-brass alloys [61].
Stress corrosion cracking is one of the main causes of unforeseen and dangerous destruction of industrial plants. The sensitized material, certain environments, and stress are three factors necessary for the occurrence of these types of failures. The environment prone to the cracking for each metal or alloy is specific because not all environments promote the SCC. Austenitic stainless steels suffer from SCC in chlorides, caustic, and polythionic acid. Copper alloys corrode in ammonia-containing environments. Well-known specific environments for the stress corrosion cracking in Al alloys include water vapor, aqueous solutions, organic liquids, and liquid metals. The SCC of Ti alloys in aqueous chloride and methanolic chloride environments has been widely reported. The tensile stress plays a key role in the stress corrosion cracking phenomenon. The required tensile stresses may be in the form of directly applied stresses, thermal, in the form of residual stresses, or a combination of all.
If one of these three components does not exist, this type of corrosion will not occur. Therefore, the solving methods should be based on the elimination of one of these three factors. Corrosive environment modification, the stress in the form of compression, and using proper material are three general proposed methods of prevention.
Unsubscribe unsuccessful, no matching records found in our database.
",metaTitle:"Unsubscribe Unsuccessful",metaDescription:"Unsubscribe unsuccessful, no matching records found in our database.",metaKeywords:null,canonicalURL:"/page/unsubscribe-unsuccessful",contentRaw:'[{"type":"htmlEditorComponent","content":""}]'},components:[{type:"htmlEditorComponent",content:""}]},successStories:{items:[]},authorsAndEditors:{filterParams:{sort:"featured,name"},profiles:[{id:"6700",title:"Dr.",name:"Abbass A.",middleName:null,surname:"Hashim",slug:"abbass-a.-hashim",fullName:"Abbass A. Hashim",position:null,profilePictureURL:"https://mts.intechopen.com/storage/users/6700/images/1864_n.jpg",biography:"Currently I am carrying out research in several areas of interest, mainly covering work on chemical and bio-sensors, semiconductor thin film device fabrication and characterisation.\nAt the moment I have very strong interest in radiation environmental pollution and bacteriology treatment. The teams of researchers are working very hard to bring novel results in this field. I am also a member of the team in charge for the supervision of Ph.D. students in the fields of development of silicon based planar waveguide sensor devices, study of inelastic electron tunnelling in planar tunnelling nanostructures for sensing applications and development of organotellurium(IV) compounds for semiconductor applications. I am a specialist in data analysis techniques and nanosurface structure. I have served as the editor for many books, been a member of the editorial board in science journals, have published many papers and hold many patents.",institutionString:null,institution:{name:"Sheffield Hallam University",country:{name:"United Kingdom"}}},{id:"54525",title:"Prof.",name:"Abdul Latif",middleName:null,surname:"Ahmad",slug:"abdul-latif-ahmad",fullName:"Abdul Latif Ahmad",position:null,profilePictureURL:"//cdnintech.com/web/frontend/www/assets/author.svg",biography:null,institutionString:null,institution:null},{id:"20567",title:"Prof.",name:"Ado",middleName:null,surname:"Jorio",slug:"ado-jorio",fullName:"Ado Jorio",position:null,profilePictureURL:"//cdnintech.com/web/frontend/www/assets/author.svg",biography:null,institutionString:null,institution:{name:"Universidade Federal de Minas Gerais",country:{name:"Brazil"}}},{id:"47940",title:"Dr.",name:"Alberto",middleName:null,surname:"Mantovani",slug:"alberto-mantovani",fullName:"Alberto Mantovani",position:null,profilePictureURL:"//cdnintech.com/web/frontend/www/assets/author.svg",biography:null,institutionString:null,institution:null},{id:"12392",title:"Mr.",name:"Alex",middleName:null,surname:"Lazinica",slug:"alex-lazinica",fullName:"Alex Lazinica",position:null,profilePictureURL:"https://mts.intechopen.com/storage/users/12392/images/7282_n.png",biography:"Alex Lazinica is the founder and CEO of IntechOpen. After obtaining a Master's degree in Mechanical Engineering, he continued his PhD studies in Robotics at the Vienna University of Technology. Here he worked as a robotic researcher with the university's Intelligent Manufacturing Systems Group as well as a guest researcher at various European universities, including the Swiss Federal Institute of Technology Lausanne (EPFL). During this time he published more than 20 scientific papers, gave presentations, served as a reviewer for major robotic journals and conferences and most importantly he co-founded and built the International Journal of Advanced Robotic Systems- world's first Open Access journal in the field of robotics. Starting this journal was a pivotal point in his career, since it was a pathway to founding IntechOpen - Open Access publisher focused on addressing academic researchers needs. Alex is a personification of IntechOpen key values being trusted, open and entrepreneurial. Today his focus is on defining the growth and development strategy for the company.",institutionString:null,institution:{name:"TU Wien",country:{name:"Austria"}}},{id:"19816",title:"Prof.",name:"Alexander",middleName:null,surname:"Kokorin",slug:"alexander-kokorin",fullName:"Alexander Kokorin",position:null,profilePictureURL:"https://mts.intechopen.com/storage/users/19816/images/1607_n.jpg",biography:"Alexander I. Kokorin: born: 1947, Moscow; DSc., PhD; Principal Research Fellow (Research Professor) of Department of Kinetics and Catalysis, N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow.\r\nArea of research interests: physical chemistry of complex-organized molecular and nanosized systems, including polymer-metal complexes; the surface of doped oxide semiconductors. He is an expert in structural, absorptive, catalytic and photocatalytic properties, in structural organization and dynamic features of ionic liquids, in magnetic interactions between paramagnetic centers. The author or co-author of 3 books, over 200 articles and reviews in scientific journals and books. He is an actual member of the International EPR/ESR Society, European Society on Quantum Solar Energy Conversion, Moscow House of Scientists, of the Board of Moscow Physical Society.",institutionString:null,institution:{name:"Semenov Institute of Chemical Physics",country:{name:"Russia"}}},{id:"62389",title:"PhD.",name:"Ali Demir",middleName:null,surname:"Sezer",slug:"ali-demir-sezer",fullName:"Ali Demir Sezer",position:null,profilePictureURL:"https://mts.intechopen.com/storage/users/62389/images/3413_n.jpg",biography:"Dr. Ali Demir Sezer has a Ph.D. from Pharmaceutical Biotechnology at the Faculty of Pharmacy, University of Marmara (Turkey). He is the member of many Pharmaceutical Associations and acts as a reviewer of scientific journals and European projects under different research areas such as: drug delivery systems, nanotechnology and pharmaceutical biotechnology. Dr. Sezer is the author of many scientific publications in peer-reviewed journals and poster communications. Focus of his research activity is drug delivery, physico-chemical characterization and biological evaluation of biopolymers micro and nanoparticles as modified drug delivery system, and colloidal drug carriers (liposomes, nanoparticles etc.).",institutionString:null,institution:{name:"Marmara University",country:{name:"Turkey"}}},{id:"61051",title:"Prof.",name:"Andrea",middleName:null,surname:"Natale",slug:"andrea-natale",fullName:"Andrea Natale",position:null,profilePictureURL:"//cdnintech.com/web/frontend/www/assets/author.svg",biography:null,institutionString:null,institution:null},{id:"100762",title:"Prof.",name:"Andrea",middleName:null,surname:"Natale",slug:"andrea-natale",fullName:"Andrea Natale",position:null,profilePictureURL:"//cdnintech.com/web/frontend/www/assets/author.svg",biography:null,institutionString:null,institution:{name:"St David's Medical Center",country:{name:"United States of America"}}},{id:"107416",title:"Dr.",name:"Andrea",middleName:null,surname:"Natale",slug:"andrea-natale",fullName:"Andrea Natale",position:null,profilePictureURL:"//cdnintech.com/web/frontend/www/assets/author.svg",biography:null,institutionString:null,institution:{name:"Texas Cardiac Arrhythmia",country:{name:"United States of America"}}},{id:"64434",title:"Dr.",name:"Angkoon",middleName:null,surname:"Phinyomark",slug:"angkoon-phinyomark",fullName:"Angkoon Phinyomark",position:null,profilePictureURL:"https://mts.intechopen.com/storage/users/64434/images/2619_n.jpg",biography:"My name is Angkoon Phinyomark. I received a B.Eng. degree in Computer Engineering with First Class Honors in 2008 from Prince of Songkla University, Songkhla, Thailand, where I received a Ph.D. degree in Electrical Engineering. My research interests are primarily in the area of biomedical signal processing and classification notably EMG (electromyography signal), EOG (electrooculography signal), and EEG (electroencephalography signal), image analysis notably breast cancer analysis and optical coherence tomography, and rehabilitation engineering. I became a student member of IEEE in 2008. During October 2011-March 2012, I had worked at School of Computer Science and Electronic Engineering, University of Essex, Colchester, Essex, United Kingdom. In addition, during a B.Eng. I had been a visiting research student at Faculty of Computer Science, University of Murcia, Murcia, Spain for three months.\n\nI have published over 40 papers during 5 years in refereed journals, books, and conference proceedings in the areas of electro-physiological signals processing and classification, notably EMG and EOG signals, fractal analysis, wavelet analysis, texture analysis, feature extraction and machine learning algorithms, and assistive and rehabilitative devices. I have several computer programming language certificates, i.e. Sun Certified Programmer for the Java 2 Platform 1.4 (SCJP), Microsoft Certified Professional Developer, Web Developer (MCPD), Microsoft Certified Technology Specialist, .NET Framework 2.0 Web (MCTS). I am a Reviewer for several refereed journals and international conferences, such as IEEE Transactions on Biomedical Engineering, IEEE Transactions on Industrial Electronics, Optic Letters, Measurement Science Review, and also a member of the International Advisory Committee for 2012 IEEE Business Engineering and Industrial Applications and 2012 IEEE Symposium on Business, Engineering and Industrial Applications.",institutionString:null,institution:{name:"Joseph Fourier University",country:{name:"France"}}},{id:"55578",title:"Dr.",name:"Antonio",middleName:null,surname:"Jurado-Navas",slug:"antonio-jurado-navas",fullName:"Antonio Jurado-Navas",position:null,profilePictureURL:"https://mts.intechopen.com/storage/users/55578/images/4574_n.png",biography:"Antonio Jurado-Navas received the M.S. degree (2002) and the Ph.D. degree (2009) in Telecommunication Engineering, both from the University of Málaga (Spain). He first worked as a consultant at Vodafone-Spain. From 2004 to 2011, he was a Research Assistant with the Communications Engineering Department at the University of Málaga. In 2011, he became an Assistant Professor in the same department. From 2012 to 2015, he was with Ericsson Spain, where he was working on geo-location\ntools for third generation mobile networks. Since 2015, he is a Marie-Curie fellow at the Denmark Technical University. His current research interests include the areas of mobile communication systems and channel modeling in addition to atmospheric optical communications, adaptive optics and statistics",institutionString:null,institution:{name:"University of Malaga",country:{name:"Spain"}}}],filtersByRegion:[{group:"region",caption:"North America",value:1,count:5698},{group:"region",caption:"Middle and South America",value:2,count:5172},{group:"region",caption:"Africa",value:3,count:1689},{group:"region",caption:"Asia",value:4,count:10244},{group:"region",caption:"Australia and Oceania",value:5,count:888},{group:"region",caption:"Europe",value:6,count:15650}],offset:12,limit:12,total:117315},chapterEmbeded:{data:{}},editorApplication:{success:null,errors:{}},ofsBooks:{filterParams:{topicId:"20"},books:[{type:"book",id:"10206",title:"Terahertz Technology",subtitle:null,isOpenForSubmission:!0,hash:"2cdb79bf6297623f1d6202ef11f099c4",slug:null,bookSignature:"Dr. Borwen You and Dr. Ja-Yu Lu",coverURL:"https://cdn.intechopen.com/books/images_new/10206.jpg",editedByType:null,editors:[{id:"191131",title:"Dr.",name:"Borwen",surname:"You",slug:"borwen-you",fullName:"Borwen You"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"10575",title:"Magnetic Skyrmions",subtitle:null,isOpenForSubmission:!0,hash:"d93d7485e8a6a30d9e069aed78fdb355",slug:null,bookSignature:"Prof. Dipti Ranjan Sahu",coverURL:"https://cdn.intechopen.com/books/images_new/10575.jpg",editedByType:null,editors:[{id:"251855",title:"Prof.",name:"Dipti Ranjan",surname:"Sahu",slug:"dipti-ranjan-sahu",fullName:"Dipti Ranjan Sahu"}],productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"10675",title:"Hydrostatics",subtitle:null,isOpenForSubmission:!0,hash:"c86c2fa9f835d4ad5e7efd8b01921866",slug:null,bookSignature:"",coverURL:"https://cdn.intechopen.com/books/images_new/10675.jpg",editedByType:null,editors:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"10957",title:"Liquid Crystals",subtitle:null,isOpenForSubmission:!0,hash:"b8dac1788dc54d12f8fc3d94a7e3e338",slug:null,bookSignature:"",coverURL:"//cdnintech.com/web/frontend/www/assets/cover.jpg",editedByType:null,editors:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}}],filtersByTopic:[{group:"topic",caption:"Agricultural and Biological Sciences",value:5,count:9},{group:"topic",caption:"Biochemistry, Genetics and Molecular Biology",value:6,count:16},{group:"topic",caption:"Business, Management and Economics",value:7,count:2},{group:"topic",caption:"Chemistry",value:8,count:6},{group:"topic",caption:"Computer and Information Science",value:9,count:10},{group:"topic",caption:"Earth and Planetary Sciences",value:10,count:4},{group:"topic",caption:"Engineering",value:11,count:15},{group:"topic",caption:"Environmental Sciences",value:12,count:2},{group:"topic",caption:"Immunology and Microbiology",value:13,count:4},{group:"topic",caption:"Materials Science",value:14,count:4},{group:"topic",caption:"Mathematics",value:15,count:1},{group:"topic",caption:"Medicine",value:16,count:56},{group:"topic",caption:"Neuroscience",value:18,count:1},{group:"topic",caption:"Pharmacology, Toxicology and Pharmaceutical Science",value:19,count:6},{group:"topic",caption:"Physics",value:20,count:2},{group:"topic",caption:"Psychology",value:21,count:3},{group:"topic",caption:"Robotics",value:22,count:1},{group:"topic",caption:"Social Sciences",value:23,count:3},{group:"topic",caption:"Technology",value:24,count:1},{group:"topic",caption:"Veterinary Medicine and Science",value:25,count:2}],offset:12,limit:12,total:4},popularBooks:{featuredBooks:[{type:"book",id:"7802",title:"Modern Slavery and Human Trafficking",subtitle:null,isOpenForSubmission:!1,hash:"587a0b7fb765f31cc98de33c6c07c2e0",slug:"modern-slavery-and-human-trafficking",bookSignature:"Jane Reeves",coverURL:"https://cdn.intechopen.com/books/images_new/7802.jpg",editors:[{id:"211328",title:"Prof.",name:"Jane",middleName:null,surname:"Reeves",slug:"jane-reeves",fullName:"Jane Reeves"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"8545",title:"Animal Reproduction in Veterinary Medicine",subtitle:null,isOpenForSubmission:!1,hash:"13aaddf5fdbbc78387e77a7da2388bf6",slug:"animal-reproduction-in-veterinary-medicine",bookSignature:"Faruk Aral, Rita Payan-Carreira and Miguel Quaresma",coverURL:"https://cdn.intechopen.com/books/images_new/8545.jpg",editors:[{id:"25600",title:"Prof.",name:"Faruk",middleName:null,surname:"Aral",slug:"faruk-aral",fullName:"Faruk Aral"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9961",title:"Data Mining",subtitle:"Methods, Applications and Systems",isOpenForSubmission:!1,hash:"ed79fb6364f2caf464079f94a0387146",slug:"data-mining-methods-applications-and-systems",bookSignature:"Derya Birant",coverURL:"https://cdn.intechopen.com/books/images_new/9961.jpg",editors:[{id:"15609",title:"Dr.",name:"Derya",middleName:null,surname:"Birant",slug:"derya-birant",fullName:"Derya Birant"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9157",title:"Neurodegenerative Diseases",subtitle:"Molecular Mechanisms and Current Therapeutic Approaches",isOpenForSubmission:!1,hash:"bc8be577966ef88735677d7e1e92ed28",slug:"neurodegenerative-diseases-molecular-mechanisms-and-current-therapeutic-approaches",bookSignature:"Nagehan Ersoy Tunalı",coverURL:"https://cdn.intechopen.com/books/images_new/9157.jpg",editors:[{id:"82778",title:"Ph.D.",name:"Nagehan",middleName:null,surname:"Ersoy Tunalı",slug:"nagehan-ersoy-tunali",fullName:"Nagehan Ersoy Tunalı"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"8686",title:"Direct Torque Control Strategies of Electrical Machines",subtitle:null,isOpenForSubmission:!1,hash:"b6ad22b14db2b8450228545d3d4f6b1a",slug:"direct-torque-control-strategies-of-electrical-machines",bookSignature:"Fatma Ben Salem",coverURL:"https://cdn.intechopen.com/books/images_new/8686.jpg",editors:[{id:"295623",title:"Associate Prof.",name:"Fatma",middleName:null,surname:"Ben Salem",slug:"fatma-ben-salem",fullName:"Fatma Ben Salem"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"7434",title:"Molecular Biotechnology",subtitle:null,isOpenForSubmission:!1,hash:"eceede809920e1ec7ecadd4691ede2ec",slug:"molecular-biotechnology",bookSignature:"Sergey Sedykh",coverURL:"https://cdn.intechopen.com/books/images_new/7434.jpg",editors:[{id:"178316",title:"Ph.D.",name:"Sergey",middleName:null,surname:"Sedykh",slug:"sergey-sedykh",fullName:"Sergey Sedykh"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9839",title:"Outdoor Recreation",subtitle:"Physiological and Psychological Effects on Health",isOpenForSubmission:!1,hash:"5f5a0d64267e32567daffa5b0c6a6972",slug:"outdoor-recreation-physiological-and-psychological-effects-on-health",bookSignature:"Hilde G. Nielsen",coverURL:"https://cdn.intechopen.com/books/images_new/9839.jpg",editors:[{id:"158692",title:"Ph.D.",name:"Hilde G.",middleName:null,surname:"Nielsen",slug:"hilde-g.-nielsen",fullName:"Hilde G. Nielsen"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9208",title:"Welding",subtitle:"Modern Topics",isOpenForSubmission:!1,hash:"7d6be076ccf3a3f8bd2ca52d86d4506b",slug:"welding-modern-topics",bookSignature:"Sadek Crisóstomo Absi Alfaro, Wojciech Borek and Błażej Tomiczek",coverURL:"https://cdn.intechopen.com/books/images_new/9208.jpg",editors:[{id:"65292",title:"Prof.",name:"Sadek Crisostomo Absi",middleName:"C. Absi",surname:"Alfaro",slug:"sadek-crisostomo-absi-alfaro",fullName:"Sadek Crisostomo Absi Alfaro"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9139",title:"Topics in Primary Care Medicine",subtitle:null,isOpenForSubmission:!1,hash:"ea774a4d4c1179da92a782e0ae9cde92",slug:"topics-in-primary-care-medicine",bookSignature:"Thomas F. Heston",coverURL:"https://cdn.intechopen.com/books/images_new/9139.jpg",editors:[{id:"217926",title:"Dr.",name:"Thomas F.",middleName:null,surname:"Heston",slug:"thomas-f.-heston",fullName:"Thomas F. Heston"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9343",title:"Trace Metals in the Environment",subtitle:"New Approaches and Recent Advances",isOpenForSubmission:!1,hash:"ae07e345bc2ce1ebbda9f70c5cd12141",slug:"trace-metals-in-the-environment-new-approaches-and-recent-advances",bookSignature:"Mario Alfonso Murillo-Tovar, Hugo Saldarriaga-Noreña and Agnieszka Saeid",coverURL:"https://cdn.intechopen.com/books/images_new/9343.jpg",editors:[{id:"255959",title:"Dr.",name:"Mario Alfonso",middleName:null,surname:"Murillo-Tovar",slug:"mario-alfonso-murillo-tovar",fullName:"Mario Alfonso Murillo-Tovar"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"8697",title:"Virtual Reality and Its Application in Education",subtitle:null,isOpenForSubmission:!1,hash:"ee01b5e387ba0062c6b0d1e9227bda05",slug:"virtual-reality-and-its-application-in-education",bookSignature:"Dragan Cvetković",coverURL:"https://cdn.intechopen.com/books/images_new/8697.jpg",editors:[{id:"101330",title:"Dr.",name:"Dragan",middleName:"Mladen",surname:"Cvetković",slug:"dragan-cvetkovic",fullName:"Dragan Cvetković"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"7831",title:"Sustainability in Urban Planning and Design",subtitle:null,isOpenForSubmission:!1,hash:"c924420492c8c2c9751e178d025f4066",slug:"sustainability-in-urban-planning-and-design",bookSignature:"Amjad Almusaed, Asaad Almssad and Linh Truong - Hong",coverURL:"https://cdn.intechopen.com/books/images_new/7831.jpg",editors:[{id:"110471",title:"Dr.",name:"Amjad",middleName:"Zaki",surname:"Almusaed",slug:"amjad-almusaed",fullName:"Amjad Almusaed"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}}],offset:12,limit:12,total:5143},hotBookTopics:{hotBooks:[],offset:0,limit:12,total:null},publish:{},publishingProposal:{success:null,errors:{}},books:{featuredBooks:[{type:"book",id:"9208",title:"Welding",subtitle:"Modern Topics",isOpenForSubmission:!1,hash:"7d6be076ccf3a3f8bd2ca52d86d4506b",slug:"welding-modern-topics",bookSignature:"Sadek Crisóstomo Absi Alfaro, Wojciech Borek and Błażej Tomiczek",coverURL:"https://cdn.intechopen.com/books/images_new/9208.jpg",editors:[{id:"65292",title:"Prof.",name:"Sadek Crisostomo Absi",middleName:"C. Absi",surname:"Alfaro",slug:"sadek-crisostomo-absi-alfaro",fullName:"Sadek Crisostomo Absi Alfaro"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9139",title:"Topics in Primary Care Medicine",subtitle:null,isOpenForSubmission:!1,hash:"ea774a4d4c1179da92a782e0ae9cde92",slug:"topics-in-primary-care-medicine",bookSignature:"Thomas F. Heston",coverURL:"https://cdn.intechopen.com/books/images_new/9139.jpg",editors:[{id:"217926",title:"Dr.",name:"Thomas F.",middleName:null,surname:"Heston",slug:"thomas-f.-heston",fullName:"Thomas F. Heston"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"8697",title:"Virtual Reality and Its Application in Education",subtitle:null,isOpenForSubmission:!1,hash:"ee01b5e387ba0062c6b0d1e9227bda05",slug:"virtual-reality-and-its-application-in-education",bookSignature:"Dragan Cvetković",coverURL:"https://cdn.intechopen.com/books/images_new/8697.jpg",editors:[{id:"101330",title:"Dr.",name:"Dragan",middleName:"Mladen",surname:"Cvetković",slug:"dragan-cvetkovic",fullName:"Dragan Cvetković"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9343",title:"Trace Metals in the Environment",subtitle:"New Approaches and Recent Advances",isOpenForSubmission:!1,hash:"ae07e345bc2ce1ebbda9f70c5cd12141",slug:"trace-metals-in-the-environment-new-approaches-and-recent-advances",bookSignature:"Mario Alfonso Murillo-Tovar, Hugo Saldarriaga-Noreña and Agnieszka Saeid",coverURL:"https://cdn.intechopen.com/books/images_new/9343.jpg",editors:[{id:"255959",title:"Dr.",name:"Mario Alfonso",middleName:null,surname:"Murillo-Tovar",slug:"mario-alfonso-murillo-tovar",fullName:"Mario Alfonso Murillo-Tovar"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9785",title:"Endometriosis",subtitle:null,isOpenForSubmission:!1,hash:"f457ca61f29cf7e8bc191732c50bb0ce",slug:"endometriosis",bookSignature:"Courtney Marsh",coverURL:"https://cdn.intechopen.com/books/images_new/9785.jpg",editors:[{id:"255491",title:"Dr.",name:"Courtney",middleName:null,surname:"Marsh",slug:"courtney-marsh",fullName:"Courtney Marsh"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"7831",title:"Sustainability in Urban Planning and Design",subtitle:null,isOpenForSubmission:!1,hash:"c924420492c8c2c9751e178d025f4066",slug:"sustainability-in-urban-planning-and-design",bookSignature:"Amjad Almusaed, Asaad Almssad and Linh Truong - Hong",coverURL:"https://cdn.intechopen.com/books/images_new/7831.jpg",editors:[{id:"110471",title:"Dr.",name:"Amjad",middleName:"Zaki",surname:"Almusaed",slug:"amjad-almusaed",fullName:"Amjad Almusaed"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9376",title:"Contemporary Developments and Perspectives in International Health Security",subtitle:"Volume 1",isOpenForSubmission:!1,hash:"b9a00b84cd04aae458fb1d6c65795601",slug:"contemporary-developments-and-perspectives-in-international-health-security-volume-1",bookSignature:"Stanislaw P. Stawicki, Michael S. Firstenberg, Sagar C. Galwankar, Ricardo Izurieta and Thomas Papadimos",coverURL:"https://cdn.intechopen.com/books/images_new/9376.jpg",editors:[{id:"181694",title:"Dr.",name:"Stanislaw P.",middleName:null,surname:"Stawicki",slug:"stanislaw-p.-stawicki",fullName:"Stanislaw P. Stawicki"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"7769",title:"Medical Isotopes",subtitle:null,isOpenForSubmission:!1,hash:"f8d3c5a6c9a42398e56b4e82264753f7",slug:"medical-isotopes",bookSignature:"Syed Ali Raza Naqvi and Muhammad Babar Imrani",coverURL:"https://cdn.intechopen.com/books/images_new/7769.jpg",editors:[{id:"259190",title:"Dr.",name:"Syed Ali Raza",middleName:null,surname:"Naqvi",slug:"syed-ali-raza-naqvi",fullName:"Syed Ali Raza Naqvi"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"9279",title:"Concepts, Applications and Emerging Opportunities in Industrial Engineering",subtitle:null,isOpenForSubmission:!1,hash:"9bfa87f9b627a5468b7c1e30b0eea07a",slug:"concepts-applications-and-emerging-opportunities-in-industrial-engineering",bookSignature:"Gary Moynihan",coverURL:"https://cdn.intechopen.com/books/images_new/9279.jpg",editors:[{id:"16974",title:"Dr.",name:"Gary",middleName:null,surname:"Moynihan",slug:"gary-moynihan",fullName:"Gary Moynihan"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}},{type:"book",id:"7807",title:"A Closer Look at Organizational Culture in Action",subtitle:null,isOpenForSubmission:!1,hash:"05c608b9271cc2bc711f4b28748b247b",slug:"a-closer-look-at-organizational-culture-in-action",bookSignature:"Süleyman Davut Göker",coverURL:"https://cdn.intechopen.com/books/images_new/7807.jpg",editors:[{id:"190035",title:"Associate Prof.",name:"Süleyman Davut",middleName:null,surname:"Göker",slug:"suleyman-davut-goker",fullName:"Süleyman Davut Göker"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}}],latestBooks:[{type:"book",id:"7434",title:"Molecular Biotechnology",subtitle:null,isOpenForSubmission:!1,hash:"eceede809920e1ec7ecadd4691ede2ec",slug:"molecular-biotechnology",bookSignature:"Sergey Sedykh",coverURL:"https://cdn.intechopen.com/books/images_new/7434.jpg",editedByType:"Edited by",editors:[{id:"178316",title:"Ph.D.",name:"Sergey",middleName:null,surname:"Sedykh",slug:"sergey-sedykh",fullName:"Sergey Sedykh"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"8545",title:"Animal Reproduction in Veterinary Medicine",subtitle:null,isOpenForSubmission:!1,hash:"13aaddf5fdbbc78387e77a7da2388bf6",slug:"animal-reproduction-in-veterinary-medicine",bookSignature:"Faruk Aral, Rita Payan-Carreira and Miguel Quaresma",coverURL:"https://cdn.intechopen.com/books/images_new/8545.jpg",editedByType:"Edited by",editors:[{id:"25600",title:"Prof.",name:"Faruk",middleName:null,surname:"Aral",slug:"faruk-aral",fullName:"Faruk Aral"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"9569",title:"Methods in Molecular Medicine",subtitle:null,isOpenForSubmission:!1,hash:"691d3f3c4ac25a8093414e9b270d2843",slug:"methods-in-molecular-medicine",bookSignature:"Yusuf Tutar",coverURL:"https://cdn.intechopen.com/books/images_new/9569.jpg",editedByType:"Edited by",editors:[{id:"158492",title:"Prof.",name:"Yusuf",middleName:null,surname:"Tutar",slug:"yusuf-tutar",fullName:"Yusuf Tutar"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"9839",title:"Outdoor Recreation",subtitle:"Physiological and Psychological Effects on Health",isOpenForSubmission:!1,hash:"5f5a0d64267e32567daffa5b0c6a6972",slug:"outdoor-recreation-physiological-and-psychological-effects-on-health",bookSignature:"Hilde G. Nielsen",coverURL:"https://cdn.intechopen.com/books/images_new/9839.jpg",editedByType:"Edited by",editors:[{id:"158692",title:"Ph.D.",name:"Hilde G.",middleName:null,surname:"Nielsen",slug:"hilde-g.-nielsen",fullName:"Hilde G. Nielsen"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"7802",title:"Modern Slavery and Human Trafficking",subtitle:null,isOpenForSubmission:!1,hash:"587a0b7fb765f31cc98de33c6c07c2e0",slug:"modern-slavery-and-human-trafficking",bookSignature:"Jane Reeves",coverURL:"https://cdn.intechopen.com/books/images_new/7802.jpg",editedByType:"Edited by",editors:[{id:"211328",title:"Prof.",name:"Jane",middleName:null,surname:"Reeves",slug:"jane-reeves",fullName:"Jane Reeves"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"8063",title:"Food Security in Africa",subtitle:null,isOpenForSubmission:!1,hash:"8cbf3d662b104d19db2efc9d59249efc",slug:"food-security-in-africa",bookSignature:"Barakat Mahmoud",coverURL:"https://cdn.intechopen.com/books/images_new/8063.jpg",editedByType:"Edited by",editors:[{id:"92016",title:"Dr.",name:"Barakat",middleName:null,surname:"Mahmoud",slug:"barakat-mahmoud",fullName:"Barakat Mahmoud"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"10118",title:"Plant Stress Physiology",subtitle:null,isOpenForSubmission:!1,hash:"c68b09d2d2634fc719ae3b9a64a27839",slug:"plant-stress-physiology",bookSignature:"Akbar Hossain",coverURL:"https://cdn.intechopen.com/books/images_new/10118.jpg",editedByType:"Edited by",editors:[{id:"280755",title:"Dr.",name:"Akbar",middleName:null,surname:"Hossain",slug:"akbar-hossain",fullName:"Akbar Hossain"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"9157",title:"Neurodegenerative Diseases",subtitle:"Molecular Mechanisms and Current Therapeutic Approaches",isOpenForSubmission:!1,hash:"bc8be577966ef88735677d7e1e92ed28",slug:"neurodegenerative-diseases-molecular-mechanisms-and-current-therapeutic-approaches",bookSignature:"Nagehan Ersoy Tunalı",coverURL:"https://cdn.intechopen.com/books/images_new/9157.jpg",editedByType:"Edited by",editors:[{id:"82778",title:"Ph.D.",name:"Nagehan",middleName:null,surname:"Ersoy Tunalı",slug:"nagehan-ersoy-tunali",fullName:"Nagehan Ersoy Tunalı"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"9961",title:"Data Mining",subtitle:"Methods, Applications and Systems",isOpenForSubmission:!1,hash:"ed79fb6364f2caf464079f94a0387146",slug:"data-mining-methods-applications-and-systems",bookSignature:"Derya Birant",coverURL:"https://cdn.intechopen.com/books/images_new/9961.jpg",editedByType:"Edited by",editors:[{id:"15609",title:"Dr.",name:"Derya",middleName:null,surname:"Birant",slug:"derya-birant",fullName:"Derya Birant"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"8686",title:"Direct Torque Control Strategies of Electrical Machines",subtitle:null,isOpenForSubmission:!1,hash:"b6ad22b14db2b8450228545d3d4f6b1a",slug:"direct-torque-control-strategies-of-electrical-machines",bookSignature:"Fatma Ben Salem",coverURL:"https://cdn.intechopen.com/books/images_new/8686.jpg",editedByType:"Edited by",editors:[{id:"295623",title:"Associate Prof.",name:"Fatma",middleName:null,surname:"Ben Salem",slug:"fatma-ben-salem",fullName:"Fatma Ben Salem"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}}]},subject:{topic:{id:"754",title:"Optical Engineering",slug:"optical-engineering",parent:{title:"Electrical and Electronic Engineering",slug:"electrical-and-electronic-engineering"},numberOfBooks:22,numberOfAuthorsAndEditors:677,numberOfWosCitations:1213,numberOfCrossrefCitations:566,numberOfDimensionsCitations:1187,videoUrl:null,fallbackUrl:null,description:null},booksByTopicFilter:{topicSlug:"optical-engineering",sort:"-publishedDate",limit:12,offset:0},booksByTopicCollection:[{type:"book",id:"5074",title:"Some Advanced Functionalities of Optical Amplifiers",subtitle:null,isOpenForSubmission:!1,hash:"7c7a6a4771c3ed374faf640de9d0ba50",slug:"some-advanced-functionalities-of-optical-amplifiers",bookSignature:"Sisir Kumar Garai",coverURL:"https://cdn.intechopen.com/books/images_new/5074.jpg",editedByType:"Edited by",editors:[{id:"113477",title:"Dr.",name:"Sisir",middleName:"Kumar",surname:"Garai",slug:"sisir-garai",fullName:"Sisir Garai"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"4607",title:"Optoelectronics",subtitle:"Materials and Devices",isOpenForSubmission:!1,hash:"0e72724ec0d3faf1ec705cb92fa03c32",slug:"optoelectronics-materials-and-devices",bookSignature:"Sergei L. Pyshkin and John Ballato",coverURL:"https://cdn.intechopen.com/books/images_new/4607.jpg",editedByType:"Edited by",editors:[{id:"43016",title:"Prof.",name:"Sergei",middleName:"L.",surname:"Pyshkin",slug:"sergei-pyshkin",fullName:"Sergei Pyshkin"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"4506",title:"Advances in Optical Fiber Technology",subtitle:"Fundamental Optical Phenomena and Applications",isOpenForSubmission:!1,hash:"9db9536cfa0ac3a32647a40c763b0b2d",slug:"advances-in-optical-fiber-technology-fundamental-optical-phenomena-and-applications",bookSignature:"Moh Yasin, Hamzah Arof and Sulaiman Wadi Harun",coverURL:"https://cdn.intechopen.com/books/images_new/4506.jpg",editedByType:"Edited by",editors:[{id:"294347",title:"Dr.",name:"Moh",middleName:null,surname:"Yasin",slug:"moh-yasin",fullName:"Moh Yasin"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"4494",title:"Advances in Optical Communication",subtitle:null,isOpenForSubmission:!1,hash:"8cd5ba4d56db55598d255b1d4f9e9519",slug:"advances-in-optical-communication",bookSignature:"Narottam Das",coverURL:"https://cdn.intechopen.com/books/images_new/4494.jpg",editedByType:"Edited by",editors:[{id:"15357",title:"Dr.",name:"Narottam",middleName:null,surname:"Das",slug:"narottam-das",fullName:"Narottam Das"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"3849",title:"Optical Sensors",subtitle:"New Developments and Practical Applications",isOpenForSubmission:!1,hash:"951a7c0782d0f39b6aeef2c4a7b89846",slug:"optical-sensors-new-developments-and-practical-applications",bookSignature:"Mohamad Yasin, Sulaiman Wadi Harun and Hamzah Arof",coverURL:"https://cdn.intechopen.com/books/images_new/3849.jpg",editedByType:"Edited by",editors:[{id:"294347",title:"Dr.",name:"Moh",middleName:null,surname:"Yasin",slug:"moh-yasin",fullName:"Moh Yasin"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"3360",title:"Current Developments in Optical Fiber Technology",subtitle:null,isOpenForSubmission:!1,hash:"834b9a9593a62b116d2101815fd94dd3",slug:"current-developments-in-optical-fiber-technology",bookSignature:"Sulaiman Wadi Harun and Hamzah Arof",coverURL:"https://cdn.intechopen.com/books/images_new/3360.jpg",editedByType:"Edited by",editors:[{id:"17617",title:"Dr.",name:"Sulaiman Wadi",middleName:null,surname:"Harun",slug:"sulaiman-wadi-harun",fullName:"Sulaiman Wadi Harun"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"2992",title:"Current Trends in Short- and Long-period Fiber Gratings",subtitle:null,isOpenForSubmission:!1,hash:"7ea3b8fc542d07312526928ba5bac062",slug:"current-trends-in-short-and-long-period-fiber-gratings",bookSignature:"Christian Cuadrado-Laborde",coverURL:"https://cdn.intechopen.com/books/images_new/2992.jpg",editedByType:"Edited by",editors:[{id:"29543",title:"Dr.",name:"Christian",middleName:"A",surname:"Cuadrado-Laborde",slug:"christian-cuadrado-laborde",fullName:"Christian Cuadrado-Laborde"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"2196",title:"Organic Light Emitting Devices",subtitle:null,isOpenForSubmission:!1,hash:"a0752ca9019b034c7493b2c793e4e0cc",slug:"organic-light-emitting-devices",bookSignature:"Jai Singh",coverURL:"https://cdn.intechopen.com/books/images_new/2196.jpg",editedByType:"Edited by",editors:[{id:"148578",title:"Prof.",name:"Jai",middleName:null,surname:"Singh",slug:"jai-singh",fullName:"Jai Singh"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"3068",title:"Solutions and Applications of Scattering, Propagation, Radiation and Emission of Electromagnetic Waves",subtitle:null,isOpenForSubmission:!1,hash:"ed32f8b9c79742d8ba52a7546781b4fb",slug:"solutions-and-applications-of-scattering-propagation-radiation-and-emission-of-electromagnetic-waves",bookSignature:"Ahmed Kishk",coverURL:"https://cdn.intechopen.com/books/images_new/3068.jpg",editedByType:"Edited by",editors:[{id:"73920",title:"Prof.",name:"Ahmed",middleName:"A",surname:"Kishk",slug:"ahmed-kishk",fullName:"Ahmed Kishk"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"2478",title:"Optical Communication",subtitle:null,isOpenForSubmission:!1,hash:"f8af14196b5429d6bf9fcb7db0a39199",slug:"optical-communication",bookSignature:"Narottam Das",coverURL:"https://cdn.intechopen.com/books/images_new/2478.jpg",editedByType:"Edited by",editors:[{id:"15357",title:"Dr.",name:"Narottam",middleName:null,surname:"Das",slug:"narottam-das",fullName:"Narottam Das"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"1383",title:"Laser Scanner Technology",subtitle:null,isOpenForSubmission:!1,hash:"771c3069cd4dc6212513566bc71c2e5e",slug:"laser-scanner-technology",bookSignature:"J. Apolinar Munoz Rodriguez",coverURL:"https://cdn.intechopen.com/books/images_new/1383.jpg",editedByType:"Edited by",editors:[{id:"108690",title:"Dr.",name:"J. Apolinar",middleName:null,surname:"Munoz Rodriguez",slug:"j.-apolinar-munoz-rodriguez",fullName:"J. Apolinar Munoz Rodriguez"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"1502",title:"Selected Topics on Optical Amplifiers in Present Scenario",subtitle:null,isOpenForSubmission:!1,hash:"fd2ecaaacdf0728e8f8af28d899ca791",slug:"selected-topics-on-optical-amplifiers-in-present-scenario",bookSignature:"Sisir Kumar Garai",coverURL:"https://cdn.intechopen.com/books/images_new/1502.jpg",editedByType:"Edited by",editors:[{id:"113477",title:"Dr.",name:"Sisir",middleName:"Kumar",surname:"Garai",slug:"sisir-garai",fullName:"Sisir Garai"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}}],booksByTopicTotal:22,mostCitedChapters:[{id:"8446",doi:"10.5772/39538",title:"2 µm Laser Sources and Their Possible Applications",slug:"2-m-laser-sources-and-their-possible-applications",totalDownloads:11307,totalCrossrefCites:97,totalDimensionsCites:141,book:{slug:"frontiers-in-guided-wave-optics-and-optoelectronics",title:"Frontiers in Guided Wave Optics and Optoelectronics",fullTitle:"Frontiers in Guided Wave Optics and Optoelectronics"},signatures:"Karsten Scholle, Samir Lamrini, Philipp Koopmann and Peter Fuhrberg",authors:[{id:"4951",title:"Dr.",name:"Karsten",middleName:null,surname:"Scholle",slug:"karsten-scholle",fullName:"Karsten Scholle"},{id:"133366",title:"Prof.",name:"Samir",middleName:null,surname:"Lamrini",slug:"samir-lamrini",fullName:"Samir Lamrini"},{id:"133370",title:"Prof.",name:"Philipp",middleName:null,surname:"Koopmann",slug:"philipp-koopmann",fullName:"Philipp Koopmann"},{id:"133371",title:"Mr.",name:"Peter",middleName:null,surname:"Fuhrberg",slug:"peter-fuhrberg",fullName:"Peter Fuhrberg"}]},{id:"44684",doi:"10.5772/54682",title:"A Guide to Fiber Bragg Grating Sensors",slug:"a-guide-to-fiber-bragg-grating-sensors",totalDownloads:5008,totalCrossrefCites:15,totalDimensionsCites:46,book:{slug:"current-trends-in-short-and-long-period-fiber-gratings",title:"Current Trends in Short- and Long-period Fiber Gratings",fullTitle:"Current Trends in Short- and Long-period Fiber Gratings"},signatures:"Marcelo M. Werneck, Regina C. S. B. Allil,\nBessie A. Ribeiro and Fábio V. B. de Nazaré",authors:[{id:"37623",title:"Prof.",name:"Marcelo",middleName:"M",surname:"Werneck",slug:"marcelo-werneck",fullName:"Marcelo Werneck"},{id:"61263",title:"Dr.",name:"Regina",middleName:"Célia",surname:"Allil",slug:"regina-allil",fullName:"Regina Allil"},{id:"167291",title:"MSc.",name:"Bessie",middleName:null,surname:"Ribeiro",slug:"bessie-ribeiro",fullName:"Bessie Ribeiro"},{id:"167292",title:"D.Sc.",name:"Fábio",middleName:"V. B. De",surname:"Nazaré",slug:"fabio-nazare",fullName:"Fábio Nazaré"}]},{id:"29105",doi:"10.5772/27304",title:"Synthesis of Two-Frequency Symmetrical Radiation and Its Application in Fiber Optical Structures Monitoring",slug:"synthesis-of-two-frequency-symmetrical-radiation-and-its-application-in-fiber-optical-structures-mon",totalDownloads:1727,totalCrossrefCites:25,totalDimensionsCites:35,book:{slug:"fiber-optic-sensors",title:"Fiber Optic Sensors",fullTitle:"Fiber Optic Sensors"},signatures:"Oleg Morozov, German Il’in, Gennady Morozov and Tagir Sadeev",authors:[{id:"69648",title:"Prof.",name:"Oleg",middleName:null,surname:"Morozov",slug:"oleg-morozov",fullName:"Oleg Morozov"},{id:"71962",title:"Prof.",name:"Gennady",middleName:null,surname:"Morozov",slug:"gennady-morozov",fullName:"Gennady Morozov"},{id:"71964",title:"Dr.",name:"Tagir",middleName:null,surname:"Sadeev",slug:"tagir-sadeev",fullName:"Tagir Sadeev"},{id:"120647",title:"Prof.",name:"German",middleName:null,surname:"Il'In",slug:"german-il'in",fullName:"German Il'In"}]}],mostDownloadedChaptersLast30Days:[{id:"44684",title:"A Guide to Fiber Bragg Grating Sensors",slug:"a-guide-to-fiber-bragg-grating-sensors",totalDownloads:5008,totalCrossrefCites:15,totalDimensionsCites:46,book:{slug:"current-trends-in-short-and-long-period-fiber-gratings",title:"Current Trends in Short- and Long-period Fiber Gratings",fullTitle:"Current Trends in Short- and Long-period Fiber Gratings"},signatures:"Marcelo M. Werneck, Regina C. S. B. Allil,\nBessie A. Ribeiro and Fábio V. B. de Nazaré",authors:[{id:"37623",title:"Prof.",name:"Marcelo",middleName:"M",surname:"Werneck",slug:"marcelo-werneck",fullName:"Marcelo Werneck"},{id:"61263",title:"Dr.",name:"Regina",middleName:"Célia",surname:"Allil",slug:"regina-allil",fullName:"Regina Allil"},{id:"167291",title:"MSc.",name:"Bessie",middleName:null,surname:"Ribeiro",slug:"bessie-ribeiro",fullName:"Bessie Ribeiro"},{id:"167292",title:"D.Sc.",name:"Fábio",middleName:"V. B. De",surname:"Nazaré",slug:"fabio-nazare",fullName:"Fábio Nazaré"}]},{id:"8446",title:"2 µm Laser Sources and Their Possible Applications",slug:"2-m-laser-sources-and-their-possible-applications",totalDownloads:11307,totalCrossrefCites:97,totalDimensionsCites:141,book:{slug:"frontiers-in-guided-wave-optics-and-optoelectronics",title:"Frontiers in Guided Wave Optics and Optoelectronics",fullTitle:"Frontiers in Guided Wave Optics and Optoelectronics"},signatures:"Karsten Scholle, Samir Lamrini, Philipp Koopmann and Peter Fuhrberg",authors:[{id:"4951",title:"Dr.",name:"Karsten",middleName:null,surname:"Scholle",slug:"karsten-scholle",fullName:"Karsten Scholle"},{id:"133366",title:"Prof.",name:"Samir",middleName:null,surname:"Lamrini",slug:"samir-lamrini",fullName:"Samir Lamrini"},{id:"133370",title:"Prof.",name:"Philipp",middleName:null,surname:"Koopmann",slug:"philipp-koopmann",fullName:"Philipp Koopmann"},{id:"133371",title:"Mr.",name:"Peter",middleName:null,surname:"Fuhrberg",slug:"peter-fuhrberg",fullName:"Peter Fuhrberg"}]},{id:"8431",title:"Bismuth-doped Silica Fiber Amplifier",slug:"bismuth-doped-silica-fiber-amplifier",totalDownloads:3268,totalCrossrefCites:1,totalDimensionsCites:0,book:{slug:"frontiers-in-guided-wave-optics-and-optoelectronics",title:"Frontiers in Guided Wave Optics and Optoelectronics",fullTitle:"Frontiers in Guided Wave Optics and Optoelectronics"},signatures:"Young-Seok Seo and Yasushi Fujimoto",authors:[{id:"4778",title:"Researcher",name:"Young-Seok",middleName:null,surname:"Seo",slug:"young-seok-seo",fullName:"Young-Seok Seo"},{id:"4885",title:"Dr.",name:"Yasushi",middleName:null,surname:"Fujimoto",slug:"yasushi-fujimoto",fullName:"Yasushi Fujimoto"}]},{id:"8441",title:"Magneto-Optical Devices for Optical Integrated Circuits",slug:"magneto-optical-devices-for-optical-integrated-circuits",totalDownloads:5805,totalCrossrefCites:0,totalDimensionsCites:5,book:{slug:"frontiers-in-guided-wave-optics-and-optoelectronics",title:"Frontiers in Guided Wave Optics and Optoelectronics",fullTitle:"Frontiers in Guided Wave Optics and Optoelectronics"},signatures:"Vadym Zayets and Koji Ando",authors:[{id:"4688",title:"Dr.",name:"Vadym",middleName:null,surname:"Zayets",slug:"vadym-zayets",fullName:"Vadym Zayets"},{id:"133363",title:"Prof.",name:"Koji",middleName:null,surname:"Ando",slug:"koji-ando",fullName:"Koji Ando"}]},{id:"47457",title:"Multi-User Visible Light Communications",slug:"multi-user-visible-light-communications",totalDownloads:2531,totalCrossrefCites:2,totalDimensionsCites:2,book:{slug:"advances-in-optical-communication",title:"Advances in Optical Communication",fullTitle:"Advances in Optical Communication"},signatures:"Oswaldo González, Marcos F. Guerra Medina and Inocencio R.\nMartín",authors:[{id:"143544",title:"Dr.",name:"Oswaldo",middleName:null,surname:"González",slug:"oswaldo-gonzalez",fullName:"Oswaldo González"},{id:"171546",title:"Mr.",name:"Marcos F.",middleName:null,surname:"Guerra Medina",slug:"marcos-f.-guerra-medina",fullName:"Marcos F. Guerra Medina"},{id:"172973",title:"Dr.",name:"Inocencio R.",middleName:null,surname:"Martín",slug:"inocencio-r.-martin",fullName:"Inocencio R. Martín"}]},{id:"45075",title:"Smart Technical Textiles Based on Fiber Optic Sensors",slug:"smart-technical-textiles-based-on-fiber-optic-sensors",totalDownloads:3943,totalCrossrefCites:1,totalDimensionsCites:7,book:{slug:"current-developments-in-optical-fiber-technology",title:"Current Developments in Optical Fiber Technology",fullTitle:"Current Developments in Optical Fiber Technology"},signatures:"Katerina Krebber",authors:[{id:"158312",title:"Dr.",name:"Katerina",middleName:null,surname:"Krebber",slug:"katerina-krebber",fullName:"Katerina Krebber"}]},{id:"8444",title:"Optical Deposition of Carbon Nanotubes for Fiber-based Device Fabrication",slug:"optical-deposition-of-carbon-nanotubes-for-fiber-based-device-fabrication",totalDownloads:3469,totalCrossrefCites:7,totalDimensionsCites:11,book:{slug:"frontiers-in-guided-wave-optics-and-optoelectronics",title:"Frontiers in Guided Wave Optics and Optoelectronics",fullTitle:"Frontiers in Guided Wave Optics and Optoelectronics"},signatures:"Ken Kashiwagi and Shinji Yamashita",authors:[{id:"5133",title:"Dr.",name:"Ken",middleName:null,surname:"Kashiwagi",slug:"ken-kashiwagi",fullName:"Ken Kashiwagi"},{id:"38416",title:"Mr.",name:"Shinji",middleName:null,surname:"Yamashita",slug:"shinji-yamashita",fullName:"Shinji Yamashita"}]},{id:"8425",title:"Frontiers in Guided Wave Optics and Optoelectronics",slug:"frontiers-in-guided-wave-optics-and-optoelectronics",totalDownloads:4480,totalCrossrefCites:2,totalDimensionsCites:11,book:{slug:"frontiers-in-guided-wave-optics-and-optoelectronics",title:"Frontiers in Guided Wave Optics and Optoelectronics",fullTitle:"Frontiers in Guided Wave Optics and Optoelectronics"},signatures:"Bishnu Pal",authors:[{id:"4782",title:"Prof.",name:"Bishnu",middleName:"P",surname:"Pal",slug:"bishnu-pal",fullName:"Bishnu Pal"}]},{id:"8427",title:"Nonlinear Properties of Chalcogenide Glass Fibers",slug:"nonlinear-properties-of-chalcogenide-glass-fibers",totalDownloads:4934,totalCrossrefCites:3,totalDimensionsCites:22,book:{slug:"frontiers-in-guided-wave-optics-and-optoelectronics",title:"Frontiers in Guided Wave Optics and Optoelectronics",fullTitle:"Frontiers in Guided Wave Optics and Optoelectronics"},signatures:"Jas S. Sanghera, L. Brandon Shaw, C. M. Florea, P. Pureza, V. Q. Nguyen, F. Kung, Dan Gibson and I. D. Aggarwal",authors:[{id:"5111",title:"Dr.",name:"Jasbinder",middleName:null,surname:"Sanghera",slug:"jasbinder-sanghera",fullName:"Jasbinder Sanghera"},{id:"133867",title:"Dr.",name:"Brandon",middleName:null,surname:"Shaw",slug:"brandon-shaw",fullName:"Brandon Shaw"},{id:"133868",title:"Dr.",name:"Catalin",middleName:null,surname:"Florea",slug:"catalin-florea",fullName:"Catalin Florea"},{id:"133872",title:"Prof.",name:"Gam",middleName:null,surname:"Nguyen",slug:"gam-nguyen",fullName:"Gam Nguyen"},{id:"133876",title:"Dr.",name:"Ishwar",middleName:null,surname:"Aggarwal",slug:"ishwar-aggarwal",fullName:"Ishwar Aggarwal"}]},{id:"8442",title:"Tunable Hollow Optical Waveguide and Its Applications",slug:"tunable-hollow-optical-waveguide-and-its-applications",totalDownloads:3734,totalCrossrefCites:1,totalDimensionsCites:1,book:{slug:"frontiers-in-guided-wave-optics-and-optoelectronics",title:"Frontiers in Guided Wave Optics and Optoelectronics",fullTitle:"Frontiers in Guided Wave Optics and Optoelectronics"},signatures:"Mukesh Kumar, Toru Miura, Yasuki Sakurai and Fumio Koyama",authors:[{id:"63461",title:"Dr.",name:"Mukesh",middleName:null,surname:"Kumar",slug:"mukesh-kumar",fullName:"Mukesh Kumar"},{id:"133388",title:"Prof.",name:"Toru",middleName:null,surname:"Miura",slug:"toru-miura",fullName:"Toru Miura"},{id:"133402",title:"Prof.",name:"Yasuki",middleName:null,surname:"Sakurai",slug:"yasuki-sakurai",fullName:"Yasuki Sakurai"},{id:"133404",title:"Prof.",name:"Fumio",middleName:null,surname:"Koyama",slug:"fumio-koyama",fullName:"Fumio Koyama"}]}],onlineFirstChaptersFilter:{topicSlug:"optical-engineering",limit:3,offset:0},onlineFirstChaptersCollection:[],onlineFirstChaptersTotal:0},preDownload:{success:null,errors:{}},aboutIntechopen:{},privacyPolicy:{},peerReviewing:{},howOpenAccessPublishingWithIntechopenWorks:{},sponsorshipBooks:{sponsorshipBooks:[{type:"book",id:"10176",title:"Microgrids and Local Energy Systems",subtitle:null,isOpenForSubmission:!0,hash:"c32b4a5351a88f263074b0d0ca813a9c",slug:null,bookSignature:"Prof. Nick Jenkins",coverURL:"https://cdn.intechopen.com/books/images_new/10176.jpg",editedByType:null,editors:[{id:"55219",title:"Prof.",name:"Nick",middleName:null,surname:"Jenkins",slug:"nick-jenkins",fullName:"Nick Jenkins"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter"}}],offset:8,limit:8,total:1},route:{name:"profile.detail",path:"/profiles/316431/radan-stojanovic",hash:"",query:{},params:{id:"316431",slug:"radan-stojanovic"},fullPath:"/profiles/316431/radan-stojanovic",meta:{},from:{name:null,path:"/",hash:"",query:{},params:{},fullPath:"/",meta:{}}}},function(){var e;(e=document.currentScript||document.scripts[document.scripts.length-1]).parentNode.removeChild(e)}()