\\n\\n
Released this past November, the list is based on data collected from the Web of Science and highlights some of the world’s most influential scientific minds by naming the researchers whose publications over the previous decade have included a high number of Highly Cited Papers placing them among the top 1% most-cited.
\\n\\nWe wish to congratulate all of the researchers named and especially our authors on this amazing accomplishment! We are happy and proud to share in their success!
Note: Edited in March 2021
\\n"}]',published:!0,mainMedia:null},components:[{type:"htmlEditorComponent",content:'IntechOpen is proud to announce that 191 of our authors have made the Clarivate™ Highly Cited Researchers List for 2020, ranking them among the top 1% most-cited.
\n\nThroughout the years, the list has named a total of 261 IntechOpen authors as Highly Cited. Of those researchers, 69 have been featured on the list multiple times.
\n\n\n\nReleased this past November, the list is based on data collected from the Web of Science and highlights some of the world’s most influential scientific minds by naming the researchers whose publications over the previous decade have included a high number of Highly Cited Papers placing them among the top 1% most-cited.
\n\nWe wish to congratulate all of the researchers named and especially our authors on this amazing accomplishment! We are happy and proud to share in their success!
Note: Edited in March 2021
\n'}],latestNews:[{slug:"intechopen-partners-with-ehs-for-digital-advertising-representation-20210416",title:"IntechOpen Partners with EHS for Digital Advertising Representation"},{slug:"intechopen-signs-new-contract-with-cepiec-china-for-distribution-of-open-access-books-20210319",title:"IntechOpen Signs New Contract with CEPIEC, China for Distribution of Open Access Books"},{slug:"150-million-downloads-and-counting-20210316",title:"150 Million Downloads and Counting"},{slug:"intechopen-secures-indefinite-content-preservation-with-clockss-20210309",title:"IntechOpen Secures Indefinite Content Preservation with CLOCKSS"},{slug:"intechopen-expands-to-all-global-amazon-channels-with-full-catalog-of-books-20210308",title:"IntechOpen Expands to All Global Amazon Channels with Full Catalog of Books"},{slug:"stanford-university-identifies-top-2-scientists-over-1-000-are-intechopen-authors-and-editors-20210122",title:"Stanford University Identifies Top 2% Scientists, Over 1,000 are IntechOpen Authors and Editors"},{slug:"intechopen-authors-included-in-the-highly-cited-researchers-list-for-2020-20210121",title:"IntechOpen Authors Included in the Highly Cited Researchers List for 2020"},{slug:"intechopen-maintains-position-as-the-world-s-largest-oa-book-publisher-20201218",title:"IntechOpen Maintains Position as the World’s Largest OA Book Publisher"}]},book:{item:{type:"book",id:"5317",leadTitle:null,fullTitle:"Concise Reliability for Engineers",title:"Concise Reliability for Engineers",subtitle:null,reviewType:"peer-reviewed",abstract:"Our life is strongly influenced by the reliability of the things we use, as well as of processes and services. 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Konrad, Mark C. 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Summerfield and Bruce D. Johnson",authors:[{id:"161053",title:"Dr.",name:"Bruce",middleName:null,surname:"Johnson",fullName:"Bruce Johnson",slug:"bruce-johnson"}]},{id:"45512",title:"Ischemic Mitral Regurgitation: From Echo Assessment to Surgical Strategy and Techniques",slug:"ischemic-mitral-regurgitation-from-echo-assessment-to-surgical-strategy-and-techniques",signatures:"Gheorghe Cerin, Adrian Bogdan Popa, Razvan Ticulescu and Marco\nDiena",authors:[{id:"85199",title:"Ph.D.",name:"Gheorghe",middleName:null,surname:"Cerin",fullName:"Gheorghe Cerin",slug:"gheorghe-cerin"}]},{id:"45329",title:"Real-Time 3D Echocardiography in Percutaneous Balloon Mitral Valvuloplasty",slug:"real-time-3d-echocardiography-in-percutaneous-balloon-mitral-valvuloplasty",signatures:"Mark A. Navarro, Michael Kim and Ernesto E. Salcedo",authors:[{id:"159194",title:"Dr.",name:"Ernesto",middleName:null,surname:"Salcedo",fullName:"Ernesto Salcedo",slug:"ernesto-salcedo"}]},{id:"44117",title:"A Framework for the Systematic Characterization of the Aortic Valve Complex by Real-Time Three Dimensional Echocardiography: Implications for Transcatheter Aortic Valve Replacement",slug:"a-framework-for-the-systematic-characterization-of-the-aortic-valve-complex-by-real-time-three-dimen",signatures:"Daniel Zalkind, Michael Kim and Ernesto E. Salcedo",authors:[{id:"159194",title:"Dr.",name:"Ernesto",middleName:null,surname:"Salcedo",fullName:"Ernesto Salcedo",slug:"ernesto-salcedo"}]}]}]},onlineFirst:{chapter:{type:"chapter",id:"70945",title:"Phage Capsids as Gated, Long-Persistence, Uniform Drug Delivery Vehicles",doi:"10.5772/intechopen.91052",slug:"phage-capsids-as-gated-long-persistence-uniform-drug-delivery-vehicles",body:'Current therapies for cancerous tumors suffer from both toxic secondary effects and the development by the tumor of drug resistance. These effects usually block therapy for metastatic cancers, the cause of 90% of cancer deaths [1, 2, 3, 4, 5]. For solving these problems, our first thesis is that the best strategy is to increase tumor specificity of anticancer drug delivery in several,
The primary alternative is to continue testing chemotherapies [6, 7, 8], immunotherapies [9, 10, 11] and radiotherapies [12, 13, 14] that have tumor-specificity determined at one independent stage. This one stage is often cellular DNA replication, which is more rapid and, therefore, more drug- and radiation-sensitive, in cancerous cells than it is in healthy cells. One-stage strategies are >100 years old for immunotherapy and radiotherapy. Chemotherapeutic agents typically used are over 50 years old [8]. Even major effort has not produced systematic therapies for metastatic cancer. Apparently, new, possibly more biology-based, strategy is needed to counter risk that the above one-stage-based strategies, in general, are not realistic for reaching objectives (reviewed in [1, 15, 16, 17]).
In theory, one implementation of multi-stage strategy starts with drug delivery in a drug delivery vehicle (DDV) that is gated. The gate is opened to load drug, closed in circulation to deliver drug and opened again in tumors to administer drug. Stages of DDV-derived toxicity reduction are the following tumor-specific events: (1) DDV delivery, (2) DDV opening and, (3) drug activation, for masked drugs. We address stages (1) and (2) here.
In this implementation, tumor-specific delivery is achieved via the EPR effect. The EPR effect is the spontaneous accumulation of nanoparticles in tumors, observed for an uncharacterized phage in 1940 [18] (reviewed in [19]). The causes of the EPR effect are (1) porosity of tumor blood vessels and relative tightness of healthy blood vessels, so that nanoparticles enter tumors, but usually not healthy tissue and (2) poor tumor lymphatic drainage, so that nanoparticles remain [20, 21, 22, 23, 24, 25]. The EPR effect is the basis for the use of several FDA-approved, drug-loaded, liposomal DDVs [23, 24, 26].
However, circulating, drug-loaded, liposomal DDVs undergo drug leakage that causes significant toxicity [22, 23, 25, 27]. Also, liposomes are removed from circulation by the macrophage-phagocyte innate immune system. That is to say, liposomes are not very persistent. Chemical solutions to the leakage problem do not exist to our knowledge. Chemical solutions to the persistence problem (e.g., polyethylene glycol derivatization [28, 29]) introduce quality control problems and are not adaptable to future improvements, for example, achieving of tumor-specific unloading. The second thesis is that the optimal solution is linked to finding an appropriate, biologically produced, microbial DDV. Unlike some biology-based anticancer strategies [1, 15, 16, 19], use of a DDV is implementable with nononcolytic viruses and, therefore, avoids the dangers [19] of using oncolytic viruses.
In practice, we have discovered a phage T3 capsid that appears to have DDV-favorable characteristics needed for implementation of our strategy. First, phage T3 (and presumably its capsid) has recently been found to have exceptionally high persistence in mouse blood (3–4 h), unlike the T3 relative, T7 [30]. Second, one empty, but otherwise phage-like T3 capsid, is impermeable (for over 20 years) to the compound, Nycodenz (821 Da molecular weight) (reviewed in [31]). But, when the temperature is raised to 45°C, Nycodenz enters this capsid [32], presumably through a gate that opened. The concept is that, if we adapt this capsid to use as gated DDV, some of the needed engineering has already been done by natural selection.
Phages T3 and T7 are illustrated at the left in Figure 1. The gated capsid is illustrated at the right in Figure 1. This capsid is generated during DNA packaging that had been initiated by a DNA-free procapsid called capsid I (not shown). During packaging, capsid I expands and becomes the more angular and stable capsid (capsid II) illustrated in Figure 1. In nature, the capsid-gate is a ring of 12 gp8 molecules (Figure 1) that acts as entry portal for DNA during DNA packaging [31, 32, 33]. Most T3 and T7 capsid II particles are purified after having detached from DNA during infected cell lysis. The amount is 5–10 mg capsid II per liter of culture. The last purification step is buoyant density centrifugation in a Nycodenz or Metrizamide density gradient. Nycodenz low density (NLD) capsid II has the gp8 “gate” and is impermeable to Nycodenz and Metrizamide. The low density (1.08 g/ml) is caused by high internal hydration, which is caused by Nycodenz impermeability. Nycodenz high density (NHD) capsid II is Nycodenz-permeable (1.28 g/ml) and is completely separated from NLD capsid II during buoyant density centrifugation in a Nycodenz or Metrizamide density gradient [31, 33, 34, 35]. We use NHD capsid II as a control during loading experiments.
Phages T3 and T7 (left); and T3 and T7 NLD capsid II (right). The graphic legend at the top indicates the various capsid components. A protein is labeled by gp, followed by the number of the encoding gene. Analogous T3 and T7 genes have the same numbers. If NLD capsid II is used as DDV, the perimeter of the DDV is defined by the gp10 shell; the gate is the gp8 portal. All structures are the same for phage T3 as they are for phage T7 (reviewed in [
In the case of T3 NLD capsid II, gated entry of Nycodenz has been observed via raising of temperature. The likely entry channel was the axial hole of the gp8 ring. This conclusion was drawn, in the case of T7 NLD capsid II, from (1) entry kinetics of the fluorescent dye, bis-ANS [1,1′-bi(4-anilino)naphthalene-5,5′-di-sulfonic acid; 673 Da], and (2) covalent cross-linking of bis-ANS to channel proteins [33]. Asymmetric reconstruction-cryo-EM [36] revealed that obstruction of the T7 gp8 channel (and presumably the T3 channel) varies.
In support of working to implement the above gating-based strategy, the following quote from 2005 presents an expert opinion of what is needed for the next generation of anticancer DDVs [27]. “An ideal liposomal anticancer drug would exhibit little or no drug release while in the plasma compartment, thus ensuring limited exposure of the drug to healthy tissue. This feature would also maximize drug delivery to disease sites, as mediated by the movement of the drug-loaded liposomes from the plasma compartment to the extravascular space at disease sites, such as a region of tumor growth. Following localization, however, the drug-loaded liposome must transform itself from a stable carrier to an unstable carrier. This would ensure that the drug, which has localized in the diseased site, is bioavailable.” To our knowledge, no details for such “controlled release” via a liposomal DDV have been published. The system described here is designed to accomplish what is described in the above quote. However, implementation uses gating of a DDV, not programmed instability of a DDV.
To proceed further, we need a procedure for rapidly determining whether a drug is loaded in a capsid. In the current study, we have developed native agarose gel electrophoresis (AGE) for this purpose. The detection is performed via capsid band fluorescence produced by the compound loaded.
We tested the loading of two fluorescent compounds. The first was GelStar, a fluorescent nucleic acid stain typically used after AGE. In contrast, we incubated GelStar with our capsid and then performed AGE without further use of GelStar. The second compound was bleomycin, an anticancer drug [37, 38] that is also fluorescent [38]. Neither the manufacturer nor the vendor provided either the structure of GelStar or the concentration of commercial GelStar solutions. GelStar is sold in solution only.
The dominant fluorescence emission of nucleic acid-bound GelStar is in the green range. Apparently not previously documented is that the dominant fluorescence emission of free GelStar is in the orange range, at least when the GelStar is in an agarose gel. Ultraviolet light stimulated GelStar fluorescence emission vs. GelStar dilution is shown in Figure 2. Free GelStar, at several dilutions, had been pipetted in 5 μl amounts onto an agarose gel before ultraviolet light illumination and photography through an orange filter (spots labeled G in Figure 2). The effective volume in μl (dilution, multiplied by 5) of the stock GelStar solution is also indicated. In Figure 2, the color of GelStar spots is orange for all dilutions, as it also is found to be (not shown) with yellow and green emission filters. The orange color is real and is not produced by the emission filter because green Alexa 488 dye fluorescence retains its green color (spots labeled A in Figure 2). The number next to the Alexa 488 spots is the total amount (μg) of Alexa 488, also applied in 5 μl amounts.
Fluorescence of free GelStar. GelStar and Alexa Fluor 488 were diluted and, then, pipetted onto the surface of an agarose gel. The fluorescence was photographed through the orange filter. The GelStar samples are indicated by G, followed by the effective volume (μl) of the original, undiluted GelStar solution. The Alexa Fluor 488 samples are indicated by A, followed by the amount (μg) of Alexa Fluor 488.
DNA-bound GelStar had the expected green emission at all dilutions, when viewed through the same orange emission filter used for Figure 2 (right side of the right panel of Figure 3). Green emission was also dominant when yellow and green emission filters were used for DNA-bound GelStar (not shown).
Association of GelStar with T3 NLD capsid II. A commercial GelStar solution was diluted to the extent indicated above a lane and incubated with T3 NLD capsid II. Association of GelStar with the capsid was determined by AGE, followed by, first, photography of fluorescence (right panel, lanes labeled NLD CII) and, then, staining of protein with Coomassie blue (left panel). Also analyzed was purified T3 DNA (right panel, lanes labeled DNA), which does not stain with Coomassie blue. The arrow indicates the direction of electrophoresis; the arrowheads indicate the origins.
Without fluorescent compound, the background of an agarose gel was blue when emission was photographed without an emission filter (not shown). Thus, not surprising was that optimal detection of bleomycin was not obtained with a blue filter, even though the blue range was where peak emission was previously found for bleomycin [38]. Among the blue, green, yellow and orange filters, optimal detection was obtained with the green filter.
With the green emission filter, the minimal detected bleomycin amount was 0.2–0.4 ng when a bleomycin dilution series like the GelStar dilution series in Figure 2 was photographed (not shown). Contrast enhancement of images was used at these lower amounts.
We succeeded in loading GelStar into NLD capsid II. To achieve loading, 10 μg of NLD capsid II was incubated with GelStar at 45°C. Loading was then assayed by AGE at 10°C. Then, the gel was illuminated with ultraviolet light. The result was a fluorescent band of intensity that monotonically increased with decreasing GelStar dilution (left section of the right panel of Figure 3). The capsid amount was invariant, as judged by Coomassie staining of the same gel (left panel of Figure 3). At GelStar dilutions lower than those in Figure 3, down to 1/10, the band intensity reached a plateau (not shown). The dominant fluorescence, at all dilutions, was green, implying that the GelStar was bound to something capsid associated. GelStar did not detectably associate with NHD capsid II (not shown).
The following data indicated that the GelStar-binding capsid site was not on a DNA molecule associated with the capsid. As the dilution of GelStar decreased, the DNA-bound GelStar fluorescence underwent, first, an increase and then a decrease (Figure 3, right segment of right panel). However, the decrease was not observed for the binding to NLD capsid II. Second, although a minor NLD capsid II fraction has DNA [31], the DNA-containing NLD capsid II had been excluded during purification by selecting the low-density side of the NLD capsid II band after buoyant density centrifugation in a Nycodenz density gradient. Thus, the GelStar was apparently either self-bound or bound to capsid protein.
Association of bleomycin with T3 NLD capsid II was also achieved. However, the fluorescence signal was relatively weak (Figure 4). The bleomycin fluorescence signal of a NLD capsid II band did not change when the concentration of bleomycin was changed from 2 to 16 mg/ml. A bleomycin-associated NLD capsid II band is shown in Figure 4. Most of the free bleomycin migrated toward the cathode (not shown), i.e., in a direction opposite to the direction of capsid migration.
Association of bleomycin with T3 NLD capsid II. The experiment of
The strength of the signal in Figure 4 was weakened by the blue background and use of a green filter. In addition, a contaminant in the bleomycin preparation migrated close to the capsids, and is seen above the capsid band at the top of the left panel of Figure 4.
Calibration data for bleomycin, like the data for GelStar in Figure 2, were obtained. These data revealed that the amount of bleomycin loaded was 150–300 molecules per capsid.
In the Introduction, we outlined a strategy that is expected to work, if we can achieve the following objectives: (1) high (~4 h) persistence of NLD capsid II in blood so that the EPR effect has time to work, (2) adequate loading and sealing of NLD capsid II and (3) tumor-specific, controlled release (de-sealing or unloading). Objective #1 is likely already achieved, given the high persistence of T3 phage. That is to say, if one considers this strategy to be engineering based, some of the engineering might already be been done by natural selection.
Concerning adequate loading, the volume of the internal cavity of NLD capsid II = 6.95 × 10−17 ml. For volume occupancy (
To calculate the number (
An apparent obstacle to achieving this goal is the nonincrease in loading as bleomycin concentration increases above 2 mg/ml. At least two possible explanations exist. (1) After passing through an open gate, the bleomycin eventually causes the gate to close. We were hoping to close the gate by lowering temperature. (2) After diffusing through an open gate, the bleomycin is prevented from diffusing in reverse by binding to internal proteins; the internal proteins become saturated as the concentration of bleomycin increases. In either case, increasing the loading is a problem of engineering.
An advantage of using a phage DDV is that the human-design engineering potential is relatively high. First of all, the capsids in a T7 NLD capsid II preparation are structurally uniform enough so that symmetric cryo-EM reconstruction is obtained at 3.5 Å [34] and asymmetric reconstruction, at ~8 Å [36]. Assuming T3 capsids to be comparably homogeneous, use of chemistry to improve gating should produce relatively uniform results.
Second, phages, in general, and phage T3 in particular, can be genetically manipulated, which is not possible with liposomes. Information for determining which nucleotides to change can be obtained from high-resolution cryo-EM structure. Structure of this type is not obtainable with liposomes.
Finally, we note that, as far as we know, the only phages tested for production of an NLD capsid II-like capsid are the related coliphages, T7, T3 and ϕII. All three of these phages produce a NLD capsid II-like capsid [42]. Other phages are potential sources of gated capsids, perhaps with properties even more DDV-favorable.
We obtained bacteriophage T3 and T3 capsid II from 30°C-lysates of host,
To separate NLD capsid II from NHD capsid II, we performed buoyant density centrifugation of capsid II in a Nycodenz density gradient, as previously described [32]. The purified NLD and NHD capsid II were dialyzed against 0.1 M NaCl, 0.01 M Tris-Cl, pH 7.4, 0.001 M MgCl2. NLD capsid II, which formed a band near the top of the Nycodenz density gradient, had no detected contamination with NHD capsid II and vice versa, as previously seen by analytical ultracentrifugation [31]. Phage, NLD capsid II and NHD capsid II were dialyzed against the following buffer before use in the experiments described below: 0.2 M NaCl, 0.01 M Tris-Cl, pH 7.4, 0.001 MgCl2.
T3 DNA was obtained from purified T3 phage by phenol extraction. The DNA was dialyzed against and stored in 0.1 M NaCl, 0.01 M Tris-Cl, pH 7.4, 0.001 M EDTA. DNA concentration was obtained from optical density at 260 nm.
GelStar was obtained from Lonza (Basel, Switzerland) in solution. The company recommends dilution by a factor of 1:10,000 for use as a nucleic acid stain after gel electrophoresis. Alexa Fluor 488 succinimidyl ester was obtained from Molecular Probes (Eugene, OR, USA) as a powder.
Bleomycin was obtained from Cayman Chemical Company (Ann Arbor, MI, USA) as a powder. The bleomycin was dissolved in the aqueous buffer indicated and diluted to the concentrations indicated before incubation with capsids and DNA.
Tests of fluorescence emission vs. fluorescent molecule concentration were made by pipetting 5 μl of diluted fluorescent molecule onto the surface of a 0.7% agarose gel (LE agarose, Lonza) that had been cast in a plastic Petri dish in the electrophoresis buffer of Section 4.3. The gel was then photographed by use of the procedures described in Section 4.3.
To test for fluorescent compound/nanoparticle association, fluorescent compounds were mixed with one of the following T3 nanoparticles: NLD capsid II, NHD capsid II, phage, DNA. First, a 12.5 μl amount of fluorescent compound in 0.1 M NaCl, 0.01 M sodium citrate, pH 4.0, 0.001 M MgCl2 (citrate buffer) was added to 4.5 μl of additional citrate buffer. Then, 8.0 μl of a nanoparticle sample was added and mixed (final pH, 4.1). This mixture was incubated at 45.0°C for 2.0 h.
To perform AGE, we added to this mixture 2.5 μl of the following solution: 60% sucrose (to increase the density for layering in sample wells) in the electrophoresis buffer below. This final mixture was layered in a well of a horizontal, submerged, 0.7% agarose gel (LE agarose, Lonza), cast in and submerged under the following electrophoresis buffer: 0.05 M Tris-acetate, pH 8.4, 0.001 M MgCl2. The temperature of the gel and buffer had been pre-adjusted to 10°C in an effort to seal NLD capsid II and, therefore, prevent leakage of fluorescent compounds.
AGE was performed at 1.0 V/cm for 18.0 h with the gel and buffer maintained at 10°C by circulation through a controlled-temperature water bath. After AGE, the gel was soaked in 25% methanol in electrophoresis buffer for 1.5 h at room temperature, to cause leakage of fluorescent compounds from NLD capsid II and, therefore, to prevent auto-quenching.
Finally, the gel was photographed during illumination with a Model TM-36 ultraviolet transilluminator (Ultra Violet Products, Inc.). The camera used was a Canon Power Shot G2, 4.0 Megapixels. The following Tiffin emission filters were used as described in Section 2: Blue, 80A #290513; Green, 11Green 1—#287305; Yellow, Yellow 12—#282224; Orange, Orange 16—#289750. To detect capsid protein, the gel was subsequently stained with Coomassie blue and photographed during illumination with visible light [43].
Obtaining an increase in the current tumor-specificity of anticancer drugs should be possible via use of a DDV that implements multiple, independent stages of specificity increase. T3 NLD capsid II is an example of a bio-nanoparticle that has undergone some of the needed DDV-bioengineering via mutation/selection in the environment. Other examples, not yet found, are assumed to exist and potentially have even more favorable characteristics.
The authors acknowledge support from the San Antonio Area Foundation and the Morrison Trust.
The authors declare no conflict of interest.
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',metaTitle:"Terms and Conditions",metaDescription:"These terms and conditions outline the rules and regulations for the use of IntechOpen Website at https://intechopen.com and all its subdomains owned by Intech Limited located at 7th floor, 10 Lower Thames Street, London, EC3R 6AF, UK.",metaKeywords:null,canonicalURL:"/page/terms-and-conditions",contentRaw:'[{"type":"htmlEditorComponent","content":"By accessing the website at www.intechopen.com you are agreeing to be bound by these Terms of Service, all applicable laws and regulations, and agree that you are responsible for compliance with any applicable local laws. Use and/or access to this site is based on full agreement and compliance of these Terms. All materials contained on this website are protected by applicable copyright and trademark laws.
\\n\\nThe following terminology applies to these Terms and Conditions, Privacy Statement, Disclaimer Notice, and any or all Agreements:
\\n\\n“Client”, “Customer”, “You” and “Your” refers to you, the person accessing this website and accepting the Company’s Terms and Conditions;
\\n\\n“The Company”, “Ourselves”, “We”, “Our” and “Us”, refers to our Company, IntechOpen;
\\n\\n“Party”, “Parties”, or “Us”, refers to both the Client and ourselves, or either the Client or ourselves.
\\n\\nAll Terms refer to the offer, acceptance, and consideration of payment necessary to provide assistance to the Client in the most appropriate manner, whether by formal meetings of a fixed duration, or by any other agreed means, for the express purpose of meeting the Client’s needs in respect of provision of the Company’s stated services/products, and in accordance with, and subject to, the prevailing laws of the United Kingdom.
\\n\\nAny use of the above terminology, or other words in the singular, plural, capitalization and/or he/she or they, are taken as interchangeable.
\\n\\nUnless otherwise stated, IntechOpen and/or its licensors own the intellectual property rights for all materials on www.intechopen.com. All intellectual property rights are reserved. You may view, download, share, link and print pages from www.intechopen.com for your own personal use, subject to the restrictions set out in these Terms and Conditions.
\\n\\nWe employ the use of cookies. By using the IntechOpen website you consent to the use of cookies in accordance with IntechOpen’s Privacy Policy. Most modern day interactive websites use cookies to enable the retrieval of user details for each visit. On our site, cookies are predominantly used to enable functionality and ease of use for those visiting the site.
\\n\\nIn no circumstances shall IntechOpen or its suppliers be liable for any damages (including, without limitation, damages for loss of data or profit, or due to business interruption) arising out of the use, or inability to use, the materials on IntechOpen's websites, even if IntechOpen or an IntechOpen authorized representative has been notified orally or in writing of the possibility of such damage. Some jurisdictions do not allow limitations on implied warranties, or limitations of liability for consequential or incidental damages; consequently, these limitations may not apply to you.
\\n\\nIntechopen.com website content and services are provided on an "AS IS" and an "AS AVAILABLE" basis. Material appearing on www.intechopen.com could include minor technical, typographical, or photographic errors. IntechOpen may make changes to any material contained on its website at any time without notice.
\\n\\nIntechOpen has no formal affiliation to any external sites that link to www.intechopen.com, unless otherwise specifically stated. As such, it is not responsible for content that appears on any such sites. The inclusion of any link to IntechOpen does not imply endorsement by IntechOpen. Use of any such linked website is done solely at the user's own discretion.
\\n\\nWe reserve the right of ownership over our entire website www.intechopen.com, and all contents. By using our services, you agree to remove all links to our website immediately upon request. We also reserve the right to amend these Terms and Conditions and our linking policy at any time. By continuing to link to our website, you agree to be bound to, and abide by, these linking Terms and Conditions.
\\n\\nIf you find any link on our website, or any linked website, objectionable for any reason, please Contact Us. We will consider all requests to remove links but will have no obligation to do so.
\\n\\nWithout prior approval and express written permission, you may not create frames around our web pages or use other techniques that alter in any way the visual presentation or appearance of our website.
\\n\\nIntechOpen may revise its Terms of Service for its website at any time without notice. By using this website, you are agreeing to be bound by the current version of all Terms at the time of use.
\\n\\nThese Terms and Conditions are governed by and construed in accordance with the laws of the United Kingdom and you irrevocably submit to the exclusive jurisdiction of the courts in London, United Kingdom.
\\n\\nCroatian version of Terms and Conditions available here
\\n"}]'},components:[{type:"htmlEditorComponent",content:'By accessing the website at www.intechopen.com you are agreeing to be bound by these Terms of Service, all applicable laws and regulations, and agree that you are responsible for compliance with any applicable local laws. Use and/or access to this site is based on full agreement and compliance of these Terms. All materials contained on this website are protected by applicable copyright and trademark laws.
\n\nThe following terminology applies to these Terms and Conditions, Privacy Statement, Disclaimer Notice, and any or all Agreements:
\n\n“Client”, “Customer”, “You” and “Your” refers to you, the person accessing this website and accepting the Company’s Terms and Conditions;
\n\n“The Company”, “Ourselves”, “We”, “Our” and “Us”, refers to our Company, IntechOpen;
\n\n“Party”, “Parties”, or “Us”, refers to both the Client and ourselves, or either the Client or ourselves.
\n\nAll Terms refer to the offer, acceptance, and consideration of payment necessary to provide assistance to the Client in the most appropriate manner, whether by formal meetings of a fixed duration, or by any other agreed means, for the express purpose of meeting the Client’s needs in respect of provision of the Company’s stated services/products, and in accordance with, and subject to, the prevailing laws of the United Kingdom.
\n\nAny use of the above terminology, or other words in the singular, plural, capitalization and/or he/she or they, are taken as interchangeable.
\n\nUnless otherwise stated, IntechOpen and/or its licensors own the intellectual property rights for all materials on www.intechopen.com. All intellectual property rights are reserved. You may view, download, share, link and print pages from www.intechopen.com for your own personal use, subject to the restrictions set out in these Terms and Conditions.
\n\nWe employ the use of cookies. By using the IntechOpen website you consent to the use of cookies in accordance with IntechOpen’s Privacy Policy. Most modern day interactive websites use cookies to enable the retrieval of user details for each visit. On our site, cookies are predominantly used to enable functionality and ease of use for those visiting the site.
\n\nIn no circumstances shall IntechOpen or its suppliers be liable for any damages (including, without limitation, damages for loss of data or profit, or due to business interruption) arising out of the use, or inability to use, the materials on IntechOpen's websites, even if IntechOpen or an IntechOpen authorized representative has been notified orally or in writing of the possibility of such damage. Some jurisdictions do not allow limitations on implied warranties, or limitations of liability for consequential or incidental damages; consequently, these limitations may not apply to you.
\n\nIntechopen.com website content and services are provided on an "AS IS" and an "AS AVAILABLE" basis. Material appearing on www.intechopen.com could include minor technical, typographical, or photographic errors. IntechOpen may make changes to any material contained on its website at any time without notice.
\n\nIntechOpen has no formal affiliation to any external sites that link to www.intechopen.com, unless otherwise specifically stated. As such, it is not responsible for content that appears on any such sites. The inclusion of any link to IntechOpen does not imply endorsement by IntechOpen. Use of any such linked website is done solely at the user's own discretion.
\n\nWe reserve the right of ownership over our entire website www.intechopen.com, and all contents. By using our services, you agree to remove all links to our website immediately upon request. We also reserve the right to amend these Terms and Conditions and our linking policy at any time. By continuing to link to our website, you agree to be bound to, and abide by, these linking Terms and Conditions.
\n\nIf you find any link on our website, or any linked website, objectionable for any reason, please Contact Us. We will consider all requests to remove links but will have no obligation to do so.
\n\nWithout prior approval and express written permission, you may not create frames around our web pages or use other techniques that alter in any way the visual presentation or appearance of our website.
\n\nIntechOpen may revise its Terms of Service for its website at any time without notice. By using this website, you are agreeing to be bound by the current version of all Terms at the time of use.
\n\nThese Terms and Conditions are governed by and construed in accordance with the laws of the United Kingdom and you irrevocably submit to the exclusive jurisdiction of the courts in London, United Kingdom.
\n\nCroatian version of Terms and Conditions available here
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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. 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