Search results for ""Author F. Richard""

Supramolecular chemistry deals with the organisation of molecules into defined assemblies using non-covalent interactions, including weaker and reversible interactions such as hydrogen bonds, and metal-ligand interactions. The aspect of stereochemistry within such chemical architectures, and in particular chirality, is of special interest as it impacts on considerations of molecular recognition, the development of functional materials, the vexed question of homochirality, nanoscale effects of interactions at interfaces, biocatalysis and enzymatic catalysis, and applications in organic synthesis. Chirality in Supramolecular Assemblies addresses many of these aspects, presenting a broad overview of this important and rapidly developing interdisciplinary field. Topics covered include: Origins of molecular and topological chirality Homochirogenesis Chirality in crystallinity Host-guest behavior Chiral influences in functional materials Chirality in network solids and coordination solids Aspects of chirality at interfaces Chirality in organic assemblies Chirality related to biocatalysis and enzymes in organic synthesis. This book is a valuable reference for researchers in the molecular sciences, materials science and biological science working with chiral supramolecular systems. It provides summaries and special insights by acknowledged international experts in the various fields.

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With rapid population explosion, improving rail transit speed and capacity is strongly desirable around the world. Communication-based train control (CBTC) is an automated train control system using high capacity bidirectional train–ground communications to ensure the safe operation of rail vehicles. This book presents the latest advances in CBTC research. The contributed chapters from leading experts in the field cover different aspects of modelling, analysis, design, testing, management, deployment, and optimization of CBTC systems.Advances in Communications-Based Train Control Systems begins with the background and evolution of train signaling/train control systems. It introduces the main features and architecture of CBTC systems and describes current challenges and successful implementations around the world. Subsequent contributed chapters discuss such key research areas as Nondestructive testing techniques that can be employed to inspect rails and fastening parts New wireless channel modelling techniques for underground tunnels and viaducts Advanced wireless communication systems to improve CBTC communication availability Schemes to integrate train control and train-ground communications by modelling the control system of a group of trains in CBTC as a networked control system Use of cognitive control to improve train control performance, considering both train–ground communication and train control The book includes many supporting illustrations and tables along with a valuable set of references at the end of each chapter. With this book, researchers and practitioners will be well-equipped to advance the research and development in this important field.

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Methods in Stream Ecology provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This two part new edition is updated to reflect recent advances in the technology associated with ecological assessment of streams, including remote sensing. Volume focusses on ecosystem structure with in-depth sections on Physical Processes, Material Storage and Transport and Stream Biota. With a student-friendly price, this Third Edition is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology, and river ecology. This text is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology, and landscape ecology. Methods in Stream Ecology, 3rd Edition, Volume 2: Ecosystem Structure, is also available now!

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Methods in Stream Ecology: Volume 2: Ecosystem Structure, Third Edition, provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This new two-part edition is updated to reflect recent advances in the technology associated with ecological assessment of streams, including remote sensing. Volume two covers community interactions, ecosystem processes and ecosystem quality. With a student-friendly price, this new edition is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology and river ecology. This book is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology and landscape ecology. Methods in Stream Ecology, 3rd Edition, Volume 1: Ecosystem Structure, is also available now!

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L'Asie centrale, ou s'imbriquent " Iran et Turan ", theatre depuis des millenaires de la rencontre de cultures tres variees, exerce une fascination croissante bien au-dela de l'etroit cercles des specialistes. La diffusion et la preservation de cette culture partagee au fil des siecles par les habitants de ces vastes espaces s'est appuyee sur un vecteur essentiel, le livre. L'ecriture est en effet pratiquee depuis une epoque tres ancienne dans ces regions et les populations semblent avoir ete assez largement alphabetisees. Le livre, objet de collection ou simple support d'etude, y est recu et utilise de multiples facons. On peut tenter aujourd'hui de mieux montrer la place qu'occupe l'ecrit dans ces societes, ou par ailleurs des pratiques orales sont restees tres vivantes. Ainsi, dans ce volume, trouvera-t-on rassemblees quinze contributions illustrant differents aspects de la culture de l'ecrit dans l'Asie centrale en relation avec l'ensemble du monde turco-iranien.

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