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Author: Shantha Dharmapriya Samarasinghe Publisher: ISBN: Category : Languages : en Pages : 230
Book Description
Dipalmitoylphosphatidylcholine/cholesterol bilayer membranes were studied using $\sp2$H and $\sp{31}$P NMR spectroscopy over the pressure range from 1 bar to 5 kbar. The phase diagram was constructed, structure and dynamics of the bilayers were examined. The pressure dependence of the dynamic and conformational characteristics were studied using $\sp{31}$P NMR spectroscopy at 50$\sp\circ$C over the pressure range from 1 bar to 5 kbar. Cholesterol is able to maintain the mobility of the head groups despite the ordering of hydrocarbon chains in clear contrast to the same in pure DPPC bilayers where large changes in the head group motion was evident. Limited interdigitation of the chain region was evident in the presence of 20 mol% cholesterol. The spin lattice relaxation times cross over from fast to slow correlation time regime with the main phase transition from the liquid crystal to gel phase.
Author: Shantha Dharmapriya Samarasinghe Publisher: ISBN: Category : Languages : en Pages : 230
Book Description
Dipalmitoylphosphatidylcholine/cholesterol bilayer membranes were studied using $\sp2$H and $\sp{31}$P NMR spectroscopy over the pressure range from 1 bar to 5 kbar. The phase diagram was constructed, structure and dynamics of the bilayers were examined. The pressure dependence of the dynamic and conformational characteristics were studied using $\sp{31}$P NMR spectroscopy at 50$\sp\circ$C over the pressure range from 1 bar to 5 kbar. Cholesterol is able to maintain the mobility of the head groups despite the ordering of hydrocarbon chains in clear contrast to the same in pure DPPC bilayers where large changes in the head group motion was evident. Limited interdigitation of the chain region was evident in the presence of 20 mol% cholesterol. The spin lattice relaxation times cross over from fast to slow correlation time regime with the main phase transition from the liquid crystal to gel phase.
Author: K.V.R. Chary Publisher: Springer Science & Business Media ISBN: 1402066791 Category : Science Languages : en Pages : 551
Book Description
During teaching NMR to students and researchers, we felt the need for a text-book which can cover modern trends in the application of NMR to biological systems. This book covers the entire area of NMR in Biological Sciences (Biomolecules, cells and tissues, animals, plants and drug design). As well as being useful to researchers, this is an excellent book for teaching a course on NMR in Biological Systems.
Author: Jiri Jonas Publisher: Springer Science & Business Media ISBN: 3642759262 Category : Science Languages : en Pages : 272
Book Description
In recent years, there has been a major expansion of high pressure research providing unique information about systems of interest to a wide range of scientific disciplines. Since nuclear magnetic resonance has been applied to a wide spec trum of problems in chemistry, physics and biochemistry, it is not surprising to find that high pressure NMR techniques have also had many applications in these fields of science. Clearly, the high information content of NMR experiments combined with high pressure provides a powerful tool in modern chem istry. It is the aim of this monograph, in the series on NMR Basic Principles and Progress, to illustrate the wide range of prob lems which can be successfully studied by high pressure NMR. Indeed, the various contributions in this volume discuss studies of interest to physics, chemical physics, biochemistry, and chemical reaction kinetics. In many different ways, this monograph demonstrates the power of modern experimental and theoretical techniques to investigate very complex systems. The first contribution, by D. Brinkman, deals with NMR and NQR studies of superionic conductors and high-Tc supercon ductors at high pressure. Pressure effects on phase transitions, detection of new phases, and pressure effects on diffusion and spin-lattice relaxation, represent a few of the topics discussed in this contribution of particular interest to solid state physics.
Author: Murli H. Manghnani Publisher: Universities Press ISBN: 9788173713385 Category : High pressure (Science) Languages : en Pages : 650
Book Description
These books presents a wide spectrum of research and development activities in the field of High Pressure Science and Technology. These book provide comprehensive and interdisciplinary descriptions of recent research accomplishments in the biological, chemical, Earth, materrals, physical, physiological and related sciences.
Author: K.V.R. Chary Publisher: Springer Science & Business Media ISBN: 1402066805 Category : Science Languages : en Pages : 552
Book Description
During teaching NMR to students and researchers, we felt the need for a text-book which can cover modern trends in the application of NMR to biological systems. This book covers the entire area of NMR in Biological Sciences (Biomolecules, cells and tissues, animals, plants and drug design). As well as being useful to researchers, this is an excellent book for teaching a course on NMR in Biological Systems.
Author: Nicolau Beckmann Publisher: Elsevier ISBN: 0080528554 Category : Science Languages : en Pages : 355
Book Description
This book is intended to provide an in-depth understanding of 13C NMR as a tool in biological research. 13C NMR has provided unique information concerning complex biological systems, from proteins and nucleic acids to animals and humans. The subjects addressed include multidimensional heteronuclear techniques for structural studies of molecules in the liquid and solid states, the investigation of interactions in model membranes, the elucidation of metabolic pathwaysin vitro and in vivo on animals, and noninvasive metabolic studies performed on humans. The book is a unique mix of NMR methods and biological applications which makes it a convenient reference for those interested in research in this interdisciplinary area of physics, chemistry, biology, and medicine. An interdisciplinary text with emphasis on both 13C NMR methodology and the relevant biological and biomedical issues State-of-the-art 13C NMR techniques are described; Whenever possible, their advantages over other approaches are emphasized The chapters constitute comprehensive reviews and are written by acknowledged experts in their fields Chapters are written in a clear style, and include a large number of illustrations and comprehensive references
Author: Andre Pequeux Publisher: Springer Science & Business Media ISBN: 3642706185 Category : Science Languages : en Pages : 153
Book Description
This volume is one of those published from the proceedings of the invited lectures to the First International Congress of Comparative Physiology and Biochemistry I organized at Liege (Belgium) in August 1984 under the auspices of the Section of Comparative Physiology and Biochemistry of the International Union of Biological Sciences. In a general foreword to these different volumes, it seems to me appropriate to consider briefly what may be the comparative approach. Living organisms, beyond the diversity of their morphological forms, have evolved a widespread range of basic solutions to cope with the different problems, both organismal and environmental, with which they are faced. Soon after the turn of the century, some biologists realized that these solutions can be best comprehended in the frame work of a comparative approach integrating results of physiological and biochemical studies done at the organismic, cellular and molecular levels. The development of this approach amongst both physiologists and biocha~ists remained, however, extremely slow until recently.
Author: R. Winter Publisher: Springer Science & Business Media ISBN: 9401116997 Category : Science Languages : en Pages : 639
Book Description
This monograph, which is the outcome of the ASI on High Pressure Chemistry, Biochemistry, and Materials Science, illustrates new developments in the field of high pressure science. In fact, for chemists, biochemists, and materials scientists, pressure as an experimental variable represents a tool which provides unique information about systems of materials studied. It is interesting to note how the growth of the high pressure field is also reflected in the content of the recent ASI's dealing with this field. The ASI High Pressure Chemistry held in 1977 was followed by the ASI High Pressure Chemistry and Biochemistry held in 1986, and the coverage of the present ASI also includes applications to materials science. In view of the teaching character of the ASI, it is natural that main contributions to this volume present overviews of the different subfields or applications of high pressure research. In contrast, contributed papers offer more specialized aspects of various high pressure studies. The various contributions to this volume make clear the impressive range of fundamental and applied problems that can be studied by high pressure techniques, and also point towards a major growth of high pressure science and technology in the near future. This ASI focused mainly on advances achieved in the six years since the previous ASI devoted to the high pressure field. The organization of this volume is as follows.
Author: Shantha Dharmapriya Samarasinghe
Author: Shantha Dharmapriya Samarasinghe
Author: K.V.R. Chary
Author: Jiri Jonas
Author: Murli H. Manghnani
Author: K.V.R. Chary
Author: Nicolau Beckmann
Author: Richard William Wien
Author: Andre Pequeux
Author: R. Winter
Author: Gillian Overend