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Résonance plasmon et développements instrumentaux vers la conception de biopuces et biocapteurs innovants

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Author :
Release : 2017
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Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Résonance plasmon et développements instrumentaux vers la conception de biopuces et biocapteurs innovants by : Karim Vindas Yassine

Download or read book Résonance plasmon et développements instrumentaux vers la conception de biopuces et biocapteurs innovants written by Karim Vindas Yassine. This book was released on 2017. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de thèse porte sur la conception d'un « laboratoire-sur-fibre » original dédié à l'analyse moléculaire à distance, sans marquage et in vivo compatible dans l'avenir avec les examens endoscopiques et dédié à l'assistance aux diagnostiques. Notre approche est basée sur l'utilisation de faisceaux de fibres microstructurés. Lorsqu'ils sont correctement conçus et recouverts d'une couche d'or, ces assemblages de fibres présentent des propriétés plasmoniques intéressantes. Dans un premier temps, le modèle numérique utilisé pour atteindre une meilleure compréhension des phénomènes physiques impliqués dans l'optimisation de la sensibilité des capteurs est expliqué. Les simulations, basées sur l'optique géométrique, ont été utilisées pour optimiser la géométrie des pointes et l'épaisseur de la couche d'or dans le but d'améliorer les performances analytiques et permettre ainsi des détections d'interactions biochimiques. Le processus de fabrication des capteurs est ensuite expliqué depuis leur structuration par gravure chimique effectuée à l'ISM (Bordeaux) jusqu'à leur métallisation réalisée au CEA Grenoble. Une comparaison entre les comportements théoriques et expérimentaux et alors menée pour comprendre l'influence de l'hétérogénéité du dépôt d'or et des surfaces gravées sur la sensibilité optique. Ces propriétés optiques sont ensuite exploitées jusqu'à la preuve de concept d'analyses biochimiques déportées. Cette étape a été réalisée en deux temps : d'abord la sensibilité à l'indice local a été démontrée en détectant l'adsorption d'une couche organique auto-assemblée et ensuite un suivi de l'interaction spécifique entre deux brins d'ADN complémentaires a été effectué. Le manuscrit s'achève par une analyse des aspects plus complexes liés à la nature peu multimodale des fibres présentes dans le faisceau. La théorie des guides d'ondes est alors utilisée pour expliquer l'influence du caractère modal de la propagation de la lumière sur les réponses des fibres optiques.

Trends in Vital Food and Control Engineering

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Author :
Release : 2012
Genre :
Kind : eBook
Book Rating : 682/5 ( reviews)

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Book Synopsis Trends in Vital Food and Control Engineering by : Ayman Hafiz Amer Eissa

Download or read book Trends in Vital Food and Control Engineering written by Ayman Hafiz Amer Eissa. This book was released on 2012. Available in PDF, EPUB and Kindle. Book excerpt: This book is an example of a successful addition to the literature of bioengineering and processing control within the scientific world. The book is divided into twelve chapters covering: selected topics in food engineering, advances in food process engineering, food irradiation, food safety and quality, machine vision, control systems and economics processing. All chapters have been written by renowned professionals working in food engineering and related disciplines.

Food Safety

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Release : 2015-07-08
Genre : Technology & Engineering
Kind : eBook
Book Rating : 045/5 ( reviews)

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Book Synopsis Food Safety by : Steven Ricke

Download or read book Food Safety written by Steven Ricke. This book was released on 2015-07-08. Available in PDF, EPUB and Kindle. Book excerpt: Food Safety: Emerging Issues, Technologies and Systems offers a systems approach to learning how to understand and address some of the major complex issues that have emerged in the food industry. The book is broad in coverage and provides a foundation for a practical understanding in food safety initiatives and safety rules, how to deal with whole-chain traceability issues, handling complex computer systems and data, foodborne pathogen detection, production and processing compliance issues, safety education, and more. Recent scientific industry developments are written by experts in the field and explained in a manner to improve awareness, education and communication of these issues. - Examines effective control measures and molecular techniques for understanding specific pathogens - Presents GFSI implementation concepts and issues to aid in implementation - Demonstrates how operation processes can achieve a specific level of microbial reduction in food - Offers tools for validating microbial data collected during processing to reduce or eliminate microorganisms in foods

Advances in Food Traceability Techniques and Technologies

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Release : 2016-06-18
Genre : Technology & Engineering
Kind : eBook
Book Rating : 218/5 ( reviews)

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Book Synopsis Advances in Food Traceability Techniques and Technologies by : Montserrat Espiñeira

Download or read book Advances in Food Traceability Techniques and Technologies written by Montserrat Espiñeira. This book was released on 2016-06-18. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Food Traceability Techniques and Technologies: Improving Quality Throughout the Food Chain covers in detail a topic of great importance to both the food industry which is obliged to provide clear and accurate labeling of their products and the government and other organizations which are tasked with verification of claims of food quality and safety. The traceability of food products is becoming ever more important as globalization continues to increase the complexity of food chains. Coverage in the book includes the wide range of technologies and techniques which have been utilized in the tracing of food products. In addition, the ways in which the misuse of food traceability will affect the quality of food is also covered throughout. The first part of the book introduces the concept of traceability in the food industry, highlighting advantages of a robust traceability and the difficulties involved in implementing them. The second part looks at the technologies used to trace products, and the third section reviews the legal requirements for food traceability in the EU, the US, and the rest of the world. The final section contains a number of case studies which evaluate how food traceability has been successfully implemented in various foods focusing on the quality of the food. - Provides a wide ranging overview of all recent advances in food traceability techniques and technologies - Presents case studies covering when food traceability techniques have been applied to a range of food stuffs - Covers the legal aspects of food traceability in the EU, the USA, and around the world

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