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Resultado: 836 registro(s)

16940

Biochemistry of Insects

 

Academic Press, 1978.

ISBNs 9780125916400

Colección: ScienceDirect

Resumen (en inglés): Biochemistry of Insects reviews the state of knowledge in insect biochemistry. The book begins by examining the function of carbohydrates in regulating and maintaining the life processes of insects. This is followed by separate chapters on the functional roles of lipids and proteins in insects; and protein synthesis in insects. Subsequent chapters cover the chemistry of insect cuticle; the structure, distribution, and chemistry of insect biochromes; and chemical control of insect behavior. Also discussed are the biochemical aspects of the natural products used by insects in defensive contexts; the reaction of insecticides and related compounds with their targets; detoxification mechanisms in insects; and genetic variation in natural populations.
Designed to serve as a basic textbook in field, this volume should be equally useful as an auxiliary text for most relevant courses in insect biology, particularly insect physiology, insect ecology, insect control, and economic entomology. The book should also serve as an important reference source for the advanced student, the research scientist, and the professional entomologist seeking authoritative details of relevant areas of subject matter.


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16943

Biochemistry of Thermophily

 

Academic Press, 1978.

ISBNs 9780122682506

Colección: ScienceDirect

Resumen (en inglés): Biochemistry of Thermophily covers the proceedings of a seminar held under the auspices of the U.S.-Japan Cooperative Science Program at the East-West Center in Honolulu, Hawaii on June 22-24, 1977. This seminar focuses on biochemistry of thermophilic microorganisms. It presents an achievement in the complex field of thermophiles and their unique properties.
This book discusses the fatty acid composition in several strains of moderately and extremely thermophilic bacteria, the membrane and lipid components, the biosynthesis and function of ω-cyclohexyl fatty acids, and the influence of growth temperature and lipid state on lipid and protein distribution. It then presents the ecologic and genetic aspects of thermophilic bacteria, including their morphology, surface structure, and transfection. It also examines the function and thermostability of ribosomal proteins, polypeptides, and polyamines in thermophilic bacteria. Finally, the book discusses the thermostability of proteins, the effect of amino acid substitution on conformational stability of thermophile, the thermophilic enzymes, and the physiology of thermophilic bacteria.
This book will be helpful to molecular and research biologists, teachers, and students who wish to expand their understanding on mechanisms of thermophilicity, thermostability, and thermophilic microorganisms.


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16958

Biogenesis of Antibiotic Substances

 

Academic Press, 1965.

ISBNs 9780123955241

Colección: ScienceDirect

Resumen (en inglés): Biogenesis of Antibiotic Substances covers the proceedings of a panel discussion on ""Basic Research and Practical Aspects of Antibiotic Production"" held during the Antibiotic Congress in Prague. This book is organized into 25 chapters that cover the regulating mechanisms of primary antibiotic metabolite biosynthesis. This text describes the relationship between secondary metabolite production and synthesis of cell matter or cell wall.
The opening chapters describe the parasexual cycle and some of the ways in which the cycle may be used for strain improvement, as well as the applications of refined techniques of genetic recombination and the principles of biochemical genetics to the field of antibiotics. The next chapter deals with cultural and fermentative characteristics of A-type isolates obtained from progenitor and representative member strains of the Wisconsin Family of Strains of Penicillium chrysogenum. Considerable chapters are devoted to the metabolite biosynthesis, such as geodoxin and related compounds; secondary metabolism of penicillins, gibberellins, and griseofulvin in fungi; and tetracycline metabolites. The book goes on examining the stereochemical aspects of macrolide antibiotics. It also describes the biosynthetic pathways involving ring cleavage of carbocyclic compounds, as well as the biosynthesis of different peptide antibiotics and of actinomycins and its relationship to protein synthesis. The production of phenazines is also explained. Other chapters consider other metabolites, such as those that decarboxylate, the malonate, and the 3-nitropropionic acid. A discussion on the role of carbohydrates and phosphate in the biosynthesis of different types of antibiotics is included. Lastly, microbiological assay procedures for antibiotic research and influencing factors are presented.


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21160

Biogenesis of Mitochondria, The

Transcriptional, Translational and Genetic Aspects

 

Academic Press, 1974.

ISBNs 9780124267503

Colección: ScienceDirect

Resumen (en inglés): The Biogenesis of Mitochondria: Transcriptional, Translational and Genetic Aspects covers the symposium, ""Biogenesis of Mitochondria"", held in Rosa Marina near Bari, Italy in June 1973.
Organized into three parts, this book first discusses the mechanism, products, and role of mitochondrial DNA in mitochondrial transcription, including the genetic aspects of the process. Subsequent parts elucidate the characteristics of the mitochondrial protein synthetic machinery, as well as the synthesis of mitochondrial proteins.


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16959

Biogenesis of Plant Cell Wall Polysaccharides

 

Academic Press, 1973.

ISBNs 9780124553507

Colección: ScienceDirect

Resumen (en inglés): Biogenesis of Plant Cell Wall Polysaccharides contains the proceedings of a 1972 symposium on Biogenesis of Plant Cell Wall Polysaccharides held at the 164th National Meeting of the American Chemical Society, New York, New York. The symposium focuses on a broad range of interest from structural to functional aspects of cell wall polysaccharide biosynthesis in algae as well as in higher plants.
Organized into 17 chapters, this book details the progress and understanding regarding the biosynthesis of cell wall components and the assembly of these components in the wall. It encompasses topics on cell wall polysaccharides, UDP-D-glucuronic acid pyrophosphorylase, and D-xylose. This reference also tackles the UDP-D-glucuronic acid, L-arabinose, D-apiose, and carbohydrate polymers. Furthermore, it explains other topics, such as on extensin, hydroxyproline-rich glycoprotein, cellulose, and polygalacturonic acid.


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16967

Biological Applications of Liquid Scintillation Counting

 

Academic Press, 1974.

ISBNs 9780124172500

Colección: ScienceDirect

Resumen (en inglés): Biological Applications of Liquid Scintillation Counting, based on a series of lectures given at the Worcester Foundation for Experimental Biology, discusses the various biological applications of liquid scintillation counting and presents its principles in a manner that is simple, practical, and useful. This book explains the fundamentals of scintillators and the scintillation process, from sample preparation to testing and setting up a counter and the application of radiotracers.
This text is organized into six chapters and begins with a historical overview of liquid scintillation counting, emphasizing two major events that stimulated its development: the discovery of organic compounds called ""scintillators"" and the introduction of photomultiplier tubes. This book considers the factors that affect the performance of photomultiplier tubes, including temperature and magnetic fields, and the use of liquid scintillation counting to measure radioactivity. The discussion then shifts to the factors that must be taken into account when choosing a method for preparing samples, including the physical and chemical characteristics of the sample, the isotope or isotopes of the sample, and the anticipated level of radioactivity. The following chapters look at the general considerations when installing a liquid scintillation counter, procedures for applying radiotracers, and practical aspects of sample preparation.
This book is intended for physicists and experimental biologists.


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16968

Biological Applications of Magnetic Resonance

 

Academic Press, 1979.

ISBNs 9780126407501

Colección: ScienceDirect

Resumen (en inglés): Biological Applications of Magnetic Resonance discusses various applications of magnetic resonance techniques. The book's opening chapter examines the exchange behavior of the hydrogen-bonded protons and its influence on their nuclear magnetic resonance (NMR) spectra. This is followed by separate chapters dealing with NMR studies of nucleic acid and drug-nucleic acid complexes. Aspects of the basic theory of the nuclear Overhauser effect (NOE) are presented, along with applications of NOEs observed for protons in biomolecules. Subsequent chapters cover specialized EPR techniques that have been applied to biological problems; the use of physical methods to refine a model of the combing site of the Fv fragment of protein 315; and the utility of model compounds in the analysis of hemoprotein NMR spectra. The remaining chapters discuss serine proteinases that have been investigated by nuclear magnetic resonance spectroscopy; the use of NMR in the study of intact living tissue and organs; and 31P and 13C NMR studies of E. coli cells.


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16969

Biological Approaches and Evolutionary Trends in Plants

 

Academic Press, 1990.

ISBNs 9780124029606

Colección: ScienceDirect

Resumen (en inglés): Biological Approaches and Evolutionary Trends in Plants is a collection of papers presented at the Fourth International Symposium of Plant Biosystematics held on July 10-14, 1989 in Kyoto, Japan. Contributors, some are world's leading plant biologists, discuss the findings in evolutionary biology and issues in plant biosystematics in light of the evidence and ideas brought forward at various levels of biological organization, from molecule to cell, individual, population, species, and community levels.
This volume is organized into four sections encompassing 22 chapters and begins with an overview of discoveries concerning parapatric differentiation of weed populations, including adaptive evolution in herbicide resistant biotypes and complex evolutionary patterns in weed-crop complexes of various groups. The next section explores molecular approaches in plant biosystematics, focusing on amino acid sequencing of proteins; restriction-site variations of cpDNA, mitDNA, rDNA, etc.; and chromosome-banding patterns revealed by differential staining. The discussion shifts to a wave of research in plant population biology and evolutionary ecology since the 1970s and its impact on biology and biosystematics. The book considers various aspects of reproductive biology and evolutionary changes in significant reproductive parameters and attempts to demographically quantify these parameters. The final chapter is devoted to the use of functional phylogenetic systematics for predictive ecology.
This book will be of interest to plant biologists and scientists and researchers in fields such as biochemistry, botany, microbiology, ecology, and evolutionary biology.


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16970

Biological Effects of Radiations

 

2nd ed. Academic Press, 1979.

ISBNs 9780123041500

Colección: ScienceDirect

Resumen (en inglés): Biological Effects of Radiation, Second Edition aims to present an organized survey of the various experiments wherein living materials have been exposed to ionizing and exciting types of radiations. However, this book focuses on the effects of radiation to lower organisms, as these have received less attention. It tells how small amount of energy can damage submicroscopic structure and ultimately alter the appearance and abilities of such organisms.
Divided into five parts, this book starts off with two introductory chapters in the first part. It explains the effects of radiation. Then, other parts of the book focus on the impact of radiation from cellular to organ level. How the lower organisms response is then discussed. Lastly, the book explains the interrelations between organisms in contaminated areas. Same with the first edition, emphasis is given on the consequences of mutations, as a whole chapter is devoted to this topic. Furthermore, this book covers discoveries from experiments with cultured cells.
This book is a good text-reference for students and professionals. Also, it can be of great help to scientists, researchers, and specialists involved in the biological response to radiation.


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16971

Biological Environmental Impact Studies

Theory and Methods

 

Academic Press, 1978.

ISBNs 9780127353500

Colección: ScienceDirect

Resumen (en inglés): Biological Environmental Impact Studies: Theory and Methods explains how an environmental impact study aimed at predicting biological changes can be approached and accomplished. It explores environmental impact studies from an ecosystem function point of view and highlights ecological tools and guidelines for use in biological studies in the context of environmental impact assessment. It also considers four general concepts of biological impact studies: synergy, experimental control and causality, measures of ecosystem change, and the interrelationships between structure, function, and time.
Organized into seven chapters, this volume begins with an overview of environmental impact and environmental impact analysis, field surveys and their objectives, and mathematical modeling of biological systems. It then discusses time frames for ecological impacts; the role of field experiments and laboratory studies in environmental impact assessment; and common types of biological impact studies, including a study that investigated the impact of insecticides on the ecology of salt marshes in New Jersey and the effects of dredging, filling, and lagoon construction on tidal wetlands in Delaware.
This book is a valuable resource for biologists, biology students, managers, and government agents interested in environmental impact assessment.


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