Études physico-chimique de capteurs à base de nanomatériaux pour des applications biomédicales

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ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (69 download)

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Book Synopsis Études physico-chimique de capteurs à base de nanomatériaux pour des applications biomédicales by : Imen Hafaid

Download or read book Études physico-chimique de capteurs à base de nanomatériaux pour des applications biomédicales written by Imen Hafaid and published by . This book was released on 2009 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette étude porte sur le développement de deux immunocapteurs impédimètrique à base des nanomatériaux tels que les polymères conducteurs modifiés et les nanoparticules d’or fonctionnalisées. La première étape de développement de l’immunocapteur impédimètrique à base d’un polymère conducteur modifié a donc consisté à étudier les conditions électriques de fonctionnement optimales pour l’immunodétection. Des essais de détection d’antigène ont ensuite été réalisés dans le plasma humain et dans le sang afin de mettre au point cet immunocapteur pour le diagnostique de la thrombose veineuse profonde (DVT). La mise en application de ce dernier a été étudié en affectuant la détection de D-Dimer, dans des échantillons sanguins de patients atteints de la maladie DVT, sur des microélectrodes afin d’aboutir à la miniaturisation du dispositif biocapteur. L’étude d’une comparaison entre un biosystème utilisant un réactif de pontage protéique et un biosystème utilisant des nanoparticules d’or fonctionnalisées pour la détection de la biotine a permis le développement d’un immunocapteur impédimètrique à base de nanoparticules d’or fonctionnalisées. Différentes techniques de caractérisation ont été utilisées pour le développement de ces immunocapteurs. En effet, le contrôle in-situ a été effectué par la résonance plasmonique de surface (SPR). L’optimisation et la caractérisation électrique ainsi que l’immunodétection sans marquage ont été réalisés par la spectroscopie d’impédance électrochimique (EIS). D’autres techniques de caractérisation des couches moléculaires intermédiaires telles que la microscopie à force atomique (AFM) et la spectroscopie infrarouge à transformée de Fourrier (FTIR). Les résultats que nous avons obtenus pour les deux immunocapteurs ont montré que l’utilisation de ces nanomatériaux a permis l’amélioration de la sensibilité de détection de l’antigène spécifique avec une bonne stabilité, reproductibilité et un abaissement de la limite de détection.

Conception et Réalisation de Capteurs et de Biocapteurs Électrochimiques à Base de Nanomatériaux pour le Contrôle de la Qualité en Agroalimentaire et pour l'Analyse Biomédicale

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (19 download)

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Book Synopsis Conception et Réalisation de Capteurs et de Biocapteurs Électrochimiques à Base de Nanomatériaux pour le Contrôle de la Qualité en Agroalimentaire et pour l'Analyse Biomédicale by : Nadia El Alami el Hassani

Download or read book Conception et Réalisation de Capteurs et de Biocapteurs Électrochimiques à Base de Nanomatériaux pour le Contrôle de la Qualité en Agroalimentaire et pour l'Analyse Biomédicale written by Nadia El Alami el Hassani and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Au cours des dernières décennies, les capteurs et les biocapteurs électrochimiques ont connu un développement considérable en raison de leur simplicité, fiabilité, rapidité et sélectivité. Ils ont constitué les alternatives les plus séduisantes pour les méthodes analytiques classiques dans des domaines aussi variés que l'agro-alimentaire, la médecine et la biologie clinique, ou le contrôle de la qualité de l'environnement. Dans ce travail de recherche, nous nous sommes intéressés, dans un premier volet, aux développements des immunocapteurs et capteurs électrochimiques à base des polymères à empreintes moléculaires (MIPs) pour le contrôle de la qualité des miels. La première partie de ce volet concerne le développement des immunocapteurs sur des structures dites Bio-MEMS basées sur des microélectrodes en or. L'élaboration de ces immunocapteurs a été dédiée à la détection des résidus d'antibiotiques à savoir la sulfapyridine (SPy) et la tétracycline (TC). Une nouvelle structure des nanoparticules magnétiques (MNPs) revêtues du copolymère poly (acide pyrrole-co-pyrrole-2-carboxylique) a été exploitée dans ces travaux pour leur réseau d'immobilisation tridimensionnel ainsi que pour leur stabilité pendant de longues périodes. La détection de la SPy et de la TC a été réalisée par différentes approches compétitives en utilisant des anticorps polyclonaux. Dans la deuxième partie de ce volet, nous avons fabriqué des capteurs à base des MIPs pour la détection de la sulfaguanidine, la doxycycline et le chloramphénicol dans le miel. Ces dispositifs ont été développés sur la surface des électrodes sérigraphiées en or en employant une matrice polymérique du polyacrylamide en présence des molécules empreintes. Les performances de ces capteurs et biocapteurs (limite de détection, sélectivité, reproductibilité, application dans les milieux réels) ont ensuite été évaluées. Dans un deuxième volet, nous nous sommes parvenus à appliquer un dispositif de la langue électronique voltammétrique (Langue-EV) pour des analyses agroalimentaires et biomédicales. Dans un premier temps, nous avons discriminé les miels issus de quatorze régions de la France et du Maroc par le dispositif de la Langue-EV. Nous nous sommes aussi parvenus à démontrer la fiabilité de ce dispositif à prédire les résultats des différents paramètres physico-chimiques d'après les réponses des méthodes analytiques utilisées. Dans un deuxième temps, nous sommes passés à l'application du dispositif de la Langue-EV en analyse biomédicale dans le but de discriminer les urines des patientes souffrants des infections urinaires avec celles des femmes saines.

The Disappearing Computer

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Publisher : Springer
ISBN 13 : 3540727272
Total Pages : 314 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis The Disappearing Computer by : Norbert Streitz

Download or read book The Disappearing Computer written by Norbert Streitz and published by Springer. This book was released on 2007-07-20 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines how the computer, as we currently know it, will be replaced by a new generation of technologies, moving computing off the desktop and ultimately integrating it with real world objects and everyday environments. It provides a unique combination of concepts, methods and prototypes of ubiquitous and pervasive computing reflecting the current interest in smart environments and ambient intelligence.

Semiconductor Laser Fundamentals

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Publisher : CRC Press
ISBN 13 : 9780203020470
Total Pages : 330 pages
Book Rating : 4.0/5 (24 download)

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Book Synopsis Semiconductor Laser Fundamentals by : Toshiaki Suhara

Download or read book Semiconductor Laser Fundamentals written by Toshiaki Suhara and published by CRC Press. This book was released on 2004-03-16 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ranging from fundamental theoretical concepts to advanced device technologies, this reference/text explores the engineering, characteristics, and performance of specific semiconductor lasers. It defines key principles in electromagnetics, optoelectronics, and laser implementation for novel applications in optical communications, storage, processing

Risk Assessment in the Process Industries

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Publisher : IChemE
ISBN 13 : 9780852953235
Total Pages : 156 pages
Book Rating : 4.9/5 (532 download)

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Book Synopsis Risk Assessment in the Process Industries by : Robin Turney

Download or read book Risk Assessment in the Process Industries written by Robin Turney and published by IChemE. This book was released on 1996 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this updated and amplified edition, Dr Pitblado answers the crucial questions of risk analysis: what can go wrong?; what are the effects and consequences?; and how often will it happen'.

Handbook of Nanosafety

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Publisher : Elsevier
ISBN 13 : 0124166628
Total Pages : 377 pages
Book Rating : 4.1/5 (241 download)

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Book Synopsis Handbook of Nanosafety by : Ulla Vogel

Download or read book Handbook of Nanosafety written by Ulla Vogel and published by Elsevier. This book was released on 2013-12-17 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Nanosafety: Measurement, Exposure and Toxicology, written by leading international experts in nanosafety, provides a comprehensive understanding of engineered nanomaterials (ENM), current international nanosafety regulation, and how ENM can be safely handled in the workplace. Increasingly, the importance of safety needs to be considered when promoting the use of novel technologies like ENM. With its use of case studies and exposure scenarios, Handbook of Nanosafety demonstrates techniques to assess exposure and risks and how these assessments can be applied to improve workers' safety. Topics covered include the effects of ENM on human health, characterization of ENM, aerosol dynamics and measurement, exposure and risk assessment, and safe handling of ENM. Based on outcomes from the NANODEVICE initiative, this is an essential resource for those who need to apply current nanotoxicological thinking in the workplace and anyone who advises on nanosafety, such as professionals in toxicology, occupational safety and risk assessment. Multi-authored book, written by leading researchers in the field of nanotoxicology and nanosafety Features state-of-the-art physical and chemical characterization of engineered nanomaterials (ENM) Develops strategies for exposure assessment, risk assessment and risk management Includes practical case studies and exposure scenarios to demonstrate how you can safely use ENM in the workplace

Flexoelectricity in Liquid Crystals

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Publisher : World Scientific
ISBN 13 : 1848167997
Total Pages : 299 pages
Book Rating : 4.8/5 (481 download)

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Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka

Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.

X-Ray and Neutron Reflectivity: Principles and Applications

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Publisher : Springer Science & Business Media
ISBN 13 : 3540486968
Total Pages : 347 pages
Book Rating : 4.5/5 (44 download)

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Book Synopsis X-Ray and Neutron Reflectivity: Principles and Applications by : Jean Daillant

Download or read book X-Ray and Neutron Reflectivity: Principles and Applications written by Jean Daillant and published by Springer Science & Business Media. This book was released on 2003-07-01 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reflection of and neutrons from surfaces has existed as an x-rays exp- imental for almost it is in the last technique fifty Nevertheless, only years. decade that these methods have become as of enormously popular probes This the surfaces and interfaces. to be due to of several appears convergence of intense different circumstances. These include the more n- availability be measured orders tron and sources that can over (so reflectivity x-ray many of and the much weaker surface diffuse can now also be magnitude scattering of thin films and studied in some the detail); growing importance multil- basic the realization of the ers in both and technology research; important which in the of surfaces and and role roughness plays properties interfaces; the of statistical models to characterize the of finally development topology its and its characterization from on roughness, dependence growth processes The of and to surface scattering experiments. ability x-rays neutro4s study four five orders of in scale of surfaces over to magnitude length regardless their and also their to ability probe environment, temperature, pressure, etc. , makes these the choice for buried interfaces often probes preferred obtaining information about the microstructure of often in statistical a global surfaces, the local This is manner to complementary imaging microscopy techniques, of such studies in the literature witnessed the veritable by explosion published the last few Thus these lectures will useful for over a resource years.

Modern Surface Organometallic Chemistry

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Publisher : John Wiley & Sons
ISBN 13 : 3527627103
Total Pages : 725 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Modern Surface Organometallic Chemistry by : Jean-Marie Basset

Download or read book Modern Surface Organometallic Chemistry written by Jean-Marie Basset and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.

Diffusion in Materials - DIMAT 2011

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Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038137030
Total Pages : 600 pages
Book Rating : 4.0/5 (381 download)

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Book Synopsis Diffusion in Materials - DIMAT 2011 by : Igor Bezverkhyy

Download or read book Diffusion in Materials - DIMAT 2011 written by Igor Bezverkhyy and published by Trans Tech Publications Ltd. This book was released on 2012-04-12 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference on Diffusion in Materials (DIMAT) is the benchmark conference series for diffusion in solids. DIMAT 2011 was organized by the University of Bourgogne in association with CNRS, Dijon (France). The conference showcased new results concerning theoretical tools as well as applied research approaches. Diffusion processes affect all types of materials: nanomaterials, materials for energy, metallurgy, glasses and ceramics, but each requires its own numerical tools. Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume comprises most of the contributions presented at DIMAT 2011: 4 plenary lectures delivered by famous high-level scientists plus 88 contributions in the form of keynote lectures, talks and posters.

Cement-Based Composites

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Publisher : MDPI
ISBN 13 : 3039436570
Total Pages : 194 pages
Book Rating : 4.0/5 (394 download)

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Book Synopsis Cement-Based Composites by : Pawel Sikora

Download or read book Cement-Based Composites written by Pawel Sikora and published by MDPI. This book was released on 2021-02-17 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue on “Cement-Based Composites: Advancements in Development and Characterization” presents the latest research and advances in the field of cement-based composites. This Special Issue covers a variety of experimental studies related to fiber-reinforced, photocatalytic, lightweight, and sustainable cement-based composites. Moreover, simulation studies are presented in this Special Issue to provide fundamental knowledge of designing and optimizing the properties of cementitious composites. The presented publications in this Special Issue show the most recent technology in the cement-based composite field.

Organic Solid-State Lasers

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Publisher : Springer
ISBN 13 : 3642367054
Total Pages : 179 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Organic Solid-State Lasers by : Sébastien Forget

Download or read book Organic Solid-State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.

Nanoparticles' Promises and Risks

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Publisher : Springer
ISBN 13 : 3319117289
Total Pages : 359 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Nanoparticles' Promises and Risks by : Mihai Lungu

Download or read book Nanoparticles' Promises and Risks written by Mihai Lungu and published by Springer. This book was released on 2014-10-28 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this interdisciplinary volume is on four areas of nanoparticle research: characterization, manipulation, and potential effects on humanity and the environment. The book includes a comprehensive collection of data on industrial nanoparticle creation and the characterization of the nanoscale products of these processes. The authors describe the effects of these nanoscale structures on human health and discuss prospective implementations for detection and characterization of nanoparticles in the environment. They recommend, utilizing the most up-to-date understanding of nanotechnology, methods for limiting the negative effects of these products on the environment and human health through manipulation, sorting, and filtration.

Nano Biophotonics

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Publisher : Elsevier
ISBN 13 : 0080471358
Total Pages : 445 pages
Book Rating : 4.0/5 (84 download)

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Book Synopsis Nano Biophotonics by : Hiroshi Masuhara

Download or read book Nano Biophotonics written by Hiroshi Masuhara and published by Elsevier. This book was released on 2007-02-16 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: This third volume in the series represents the Proceedings of the 3rd International Nanophotonics Symposium, July 6-8, 2006, Icho-Kaikan, Osaka University, Osaka, Japan. Over a two-day symposium, distinguished scientists from around the world convened to discuss the latest progress in this field and the conclusions have been summarised in Nano Biophotonics: Science and Technology. The contents of this book have been compiled by invited lecturers, research members of the relevant projects/program, and some of general participants. The book has 27 chapters which are classified into 4 parts; nano bio-spectroscopy, nano bio-dynamics, nano bio-processing, and nano bio-devices. * Bridges the gap between conventional photophysics & photochemistry and nanoscience * Continuing the series that focuses on 'hot' areas of photochemistry, optics, material science and bioscience

Nonlinear Optical Materials

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Publisher : Springer Science & Business Media
ISBN 13 : 9780387985817
Total Pages : 270 pages
Book Rating : 4.9/5 (858 download)

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Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney

Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.

Laser: 50 Years Of Discoveries

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Publisher : World Scientific
ISBN 13 : 9814612421
Total Pages : 185 pages
Book Rating : 4.8/5 (146 download)

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Book Synopsis Laser: 50 Years Of Discoveries by : Fabien Bretenaker

Download or read book Laser: 50 Years Of Discoveries written by Fabien Bretenaker and published by World Scientific. This book was released on 2014-10-27 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book provides an overview of the principle and applications of lasers enriched with numerous illustrations.Being over fifty years old, lasers continue to amaze us. Their performance characteristics are constantly reaching new limits, and the scope of their applications continues to expand. Yet, it took years of effort by teams of physicists to transform the fundamental notions of Einstein into the first experimental beam of laser light. And history is still going on as fundamental research is now triggered by its remarkable properties.This book addresses every aspects of laser light, from its fundamental principles to its industrial applications, at a level particularly suited for high school teachers, students, and anybody curious about science and technology.

Confronting Poverty in Iraq

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Publisher : World Bank Publications
ISBN 13 : 0821385631
Total Pages : 114 pages
Book Rating : 4.8/5 (213 download)

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Book Synopsis Confronting Poverty in Iraq by : World Bank

Download or read book Confronting Poverty in Iraq written by World Bank and published by World Bank Publications. This book was released on 2011-01-10 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides the most comprehensive and rigorous analysis of Iraqi income and expenditure in several decades. The report makes extensive use of the Iraq Household Socio-Economic Survey, the first nationwide income and expenditure survey since 1988. IHSES data is complemented income and expenditure data from a wide range of other measures of living standards, allowing us to analyze living standards in a holistic way. The analysis presented here was performed with two main goals first, to inform the Government s Poverty Reduction Strategy; and second, to serve as a baseline for future assessments of changes in living standards and the identification of critical issues for deeper examination. Iraqi living standards have two unusual characteristics. First, they have fallen over the past generation. Second, they feature surprisingly little inequality. These characteristics are both rooted in Iraq s recent history of authoritarian government, war, military occupation, insurgency, and civil strife leading to infrastructure destruction and population displacement. There have been few opportunities for individuals to prosper from professional or entrepreneurial activities. Decades of neglected investment have resulted in deterioration of social services and economic infrastructure. Consequently, individuals have lacked capabilities to prosper and an investment climate conducive to prosperity. School enrollment and life expectancy have declined. Extremely low returns to education reflect the combination of poor educational quality and lack of employment opportunities. In terms of economic infrastructure, access to reliable electricity and water, and even access to paved roads are low, are further reflections of decades of neglect. While the upper end of the distribution has been pulled down by a lack of opportunities, the lower end has been supported by direct government provision of food. The Public Distribution System (PDS) provides 85 percent of food needs. While PDS has been useful as a safety net for the poor and the vulnerable, the system is expensive, inefficient, and fiscally risky. Indeed, PDS food rations account for a far greater share of public spending than does education or health. Going forward, Iraq faces two main challenges. First, although Iraq does not have to develop from scratch, it faces a formidable challenge in re-development. Second, a shift by the Government is required from direct provision of basic subsistence toward investment in human capacities. The Government can provide an enabling environment through investments in economic infrastructure and services to business and citizens, thus allowing the population to make productive use of education and their own labor. Both challenges are now being taken up by the Poverty Reduction Strategy, which articulates a detailed set of required actions and outlines priorities for government spending.