Elsevier bv mai 1997 (6 resultados)

Buch. Condición: Neu. Neuware - This is volume 15 of a series which aims to provide details of advances in stratification research from various, international, points of view.

Buch. Condición: Neu. Neuware - This volume deals with some of the multiple systems that growth factors and cytokines affect. The role of growth factors and cytokines on foetal development, in the immune and haemopoietic systems as well as in the skeletal and reproductive systems are covered. Various cancers are examined in a number of the chapters. This is the third and concluding volume of the treatise on growth factors and cytokines in health and disease. …

Buch. Condición: Neu. Neuware - The contributors to this text, who are all biochemists who worked during the 1950s and 60s, describe what appears to them to be the conceptually significant developments in biochemistry since the mid 1950s and how these were achieved. Their aim is to make their subjects intelligible to other scientists not expert in their field.…

Buch. Condición: Neu. Neuware - It should not come as too much of a surprise that biological membranes are considerably more complex than lipid bilayers. This has been made quite clear by the fluid-mosaic model which considers the cell membrane as a two-dimensional solution of a mosaic of integral membrane proteins and glycoproteins firmly embedded in a fluid lipid bilayer matrix. Such a model has several virtues, chief among which is that it allows membrane components to diffuse in the plane of the membrane and orient asymmetrically across the membrane. The model is also remarkable since it provokes the right sort of questions. Two such examples are: Does membrane fluidity influence enzyme activity Does cholesterol regulate fluidity However, it does not go far enough. As it turns out, there is now another version of this model, the so-called post-fluid mosaic model which incorporates two concepts, namely the existence in the membrane of discrete domains in which specific lipid-lipid, lipid-protein and protein-protein interactions occur and ordered regions that are in motion but remain separate from less ordered regions. We must admit that both are intriguing problems and of importance in guiding our thinking as to what the next model might be.We have chosen not to include the subject of membrane transport in the present volume. This obviously represents a break with convention. However, the intention is to have the topic covered subsequent volumes relating to organ systems. It would be right to regard this as an attempt to strengthen the integrated approach to the teaching of medicine.…

Buch. Condición: Neu. Neuware - This book is an up-to-date discussion of the culture of striped bass and other Morone spp. The subject matter is broken down into functional components of the spawning, husbandry, and economics of the industry, and is written by some of the leading scientists in each of the respective areas of discussion. The chapters on reproduction, nutrition, environmental requirements, transportation, economics and fish processing are not found anywhere else in the striped bass literature. The chapter on water quality takes a very non-traditional approach to considering the impact water quality has on the production success of Morone and offers some very thought-provoking ideas on water management.Primarily written as a reference work, this book is intended to complement existing technique manuals.…

Buch. Condición: Neu. Neuware - Hardbound. This volume has its core aspects of the chemistry of pyrrole and pyridine, plus their benzo derivatives and reduced forms. It begins with surveys of the natural occurrence, characterization and synthesis of pyrrolidine and pyrrolizidine alkaloids and progresses on to consider the structures of the new indole alkaloids identified since 1985. Alkaloids of the tropane type and those from plants of the Amaryllidacea family are surveyed next, and a skillfully crafted review of recent work in the porphyrin series is also featured.In the last two chapters the emphasis changes slightly and a significant contribution is a discussion of chemistry of the cyanine dyestuffs and that of their allies.…