Sif: Chemistry S5n Theory Wb PDF Download

Author: J. G. R. Briggs
Publisher: Pearson Education South Asia
ISBN: 9789814088435
Category : Chemistry
Languages : en
Pages : 68

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Author: J. G. R. Briggs
Publisher: Pearson Education South Asia
ISBN: 9789814088824
Category : Chemistry
Languages : en
Pages : 100

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Author: Environmental Science Information Center. Library and Information Services Division
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 20

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Author: Charles J. Epstein
Publisher: Cambridge University Press
ISBN: 0521254647
Category : Medical
Languages : en
Pages : 507

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This book considers chromosome imbalance which affects all stages of life in ways ranging from spontaneous abortion and retardation to behavioural problems and malignancy.

Author: C. S. Potten
Publisher: Cambridge University Press
ISBN: 9780521626798
Category : Medical
Languages : en
Pages : 240

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Book Description
The concept of programmed cell death, or apoptosis, has exploded into a major scientific field of interest for cell biologists, oncologists, and many other biomedical researchers. Apoptosis occurs throughout the lifetime of most multicellular organisms. During development, for example, the selective death of cells is vital to remove tissue between the digits to produce fingers and toes. Apoptosis is also necessary to destroy cells that represent a threat to the integrity of the organism, for example cells infected by a virus. In many cancers the genes regulating apoptosis are defective, producing immortal, continuously proliferating cells. This book discusses the philosophical and technical difficulties in defining the moment of death for a cell, as well as the biological implications and significance of programmed cell death. Recent developments in the genetic control and interacting gene networks associated with apoptosis are presented. The book is written for advanced undergraduate and postgraduate students, and is highly illustrated to aid understanding.

Author: Bill Nye
Publisher: U of Nebraska Press
ISBN: 9780803258211
Category : Literary Criticism
Languages : en
Pages : 236

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Book Description
Although Bill Nye (1850-1896) was America's best known humorist in the late 1880's and early 1890's, his work is little known today--his books long out of print and his columns yellowing in newspaper files. Now T. A. Larson, a dyed-in-the-wool Nye fan for more than thirty years, has assembled the best of Bill Nye's work, most of it dating from the seven Wyoming years when Nye made his name. The selections are chosen from Laramie, Cheyenne, and Denver newspapers and from six books published in the 1890's. The resulting collection is both good fun and a valuable picture of a lively period.

Author: Gerald L. Curtis
Publisher:
ISBN: 9780231147453
Category : Elections
Languages : en
Pages : 0

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Book Description
Running for public office in postwar Japan requires the endorsement of a political party and a sophisticated system of organizational support. In this volume, Gerald L. Curtis provides a detailed case study of the campaign of Sato Bunsei, who in 1967 ran for the Lower House of Japan's parliament as a nonincumbent candidate of the ruling Liberal Democratic Party. Sato's district consisted of a modern urban center and a tradition-bound rural hinterland and featured a dynamic dialectic between old and new patterns of electioneering, which led Sat? to innovate new strategies and techniques. Since its publication in 1971, sociologists and anthropologists as well as political scientists have considered Curtis's microanalysis of Japan's political system to be a vital historical document, offering insights into Japanese social behavior and political organization that are still relevant. The Japanese edition of Curtis's pioneering study, Daigishi No Tanjo, a best-seller, is valued today as a classic and read and cited by journalists, politicians, and scholars alike. This edition features a new introduction in which the author reflects on the reception of his book and on the changes in Japan's election process since its publication.

Author: John Morser
Publisher: Springer
ISBN: 9783642421594
Category : Medical
Languages : en
Pages : 0

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Book Description
Expectations of the potential of regenerative medicine have risen recently because of exciting research results. This book contains contributions from leading researchers who describe their successes and the problems that remain in converting the hopes into concrete therapies. The focus of the book is on the role of stem cells in two main areas -- reproduction and the brain -- described from molecular, cellular, in vivo and clinical perspectives.

Author: M.P. Mattson
Publisher: Elsevier
ISBN: 9780444507310
Category : Medical
Languages : en
Pages : 240

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Book Description
The developmental capabilities and therapeutic potential of stem cells are being revealed in studies of cellular signaling mechanisms that regulate their proliferation, differentiation and survival. "Stem Cells: A Cellular Fountain of Youth" reviews the current state of understanding of the molecular mechanisms that regulate embryonic and adult stem cells with an emphasis on how aging and age-related disease impact on these mechanisms. Leading authorities detail the properties and therapeutic potential of embryonic stem cells, and stem cell precursors of blood, nervous and muscle and bone cells. Recent advances in deciphering the environmental signals and intrinsic signal transduction pathways that regulate embryonic stem cells are described, and the potential therapeutic uses of these totipotent cells is considered. Analyses of hematopoietic stem cells during aging suggest an important genetic component to the control of their self-renewing capability which may contribute to determination of lifespan. The contribution of lymphocyte depletion to impaired immune function during aging is considered, as is the potential of hematopoietic cells to form other types of cells including neurons. Several chapters cover the remarkable and rapidly advancing field of neural stem cells. The adult brain contains populations of stem cells capable of forming new neurons and glial cells; the signals that regulate these neural stem cells and the involvement of neurogenesis in normal brain function is described. Because of their potential to replace lost or damaged neurons, there has been intense interest in determining the therapeutic potential of stem cells for the treatment of patients with Parkinson's and Alzheimer's diseases, stroke and traumatic brain and spinal cord injuries. Heart and skeletal muscle contain stem cells and the impact of aging and disease on these stem cell populations and the potential of stem cell therapy to recover function of these organs is reviewed. A final example of the fascinating world of stem cells is a review of the roles of stem cells in bone formation and remodeling. Collectively, this book provides a comprehensive, yet concise, view of stem cell molecular biology in the context of aging and age-related disease. This book will be a valuable reference for graduate students and senior scientists interested in the fascinating world of stem cells and their potential use in the clinic.

Author: Department of Health and Human Services
Publisher: CreateSpace
ISBN: 9781492901433
Category : Medical
Languages : en
Pages : 220

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Book Description
In February 2001 the Secretary of Health and Human Services requested that the National Institutes of Health prepare a summary report on the state of the science on stem cells. This report was developed in response to his request. It provides the current information about the biology of stem cells derived from all sources—embryo, fetal tissue, and adult. Since 1998, when human pluripotent stem cells were first isolated, research on stem cells has received much public attention, both because of its extraordinary promise and because of relevant legal and ethical issues. Underlying this recent public scrutiny is decades of painstaking work by scientists in many fields, who have been deciphering some of the most fundamental questions about life with the goal of improving health. In the last several decades, investments in basic research have yielded extensive knowledge about the many and complex processes involved in the development of an organism, including the control of cellular development. But many questions remain. How does a single cell—the fertilized egg—give rise to a complex, multi-cellular organism? The question represents a fundamental challenge in developmental biology. Researchers are now seeking to understand in greater detail the genetic factors that regulate cell differentiation in early development. Put simply, stem cells are self-renewing, unspecialized cells that can give rise to multiple types all of specialized cells of the body. The process by which dividing, unspecialized cells are equipped to perform specific functions—muscle contraction or nerve cell communication, for example—is called differentiation, and is fundamental to the development of the mature organism. It is now known that stem cells, in various forms, can be obtained from the embryo, the fetus, and the adult. The report is a review of the state of the science of stem cell research as of June 17, 2001. Included in this report is subject matter addressing stem cells from adult, fetal tissue, and embryonic sources. Because so much of the progress made to date was dependent on animal models, a significant emphasis is placed on understandings gained from mouse models of development and mouse stem cell research. The report also devotes substantial attention to scientific publications on the characterization of specialized cells developed from embryonic stem cells and the plasticity of adult stem cells. Both scientific and lay publications use a variety of terms to describe stem cells and their properties. For this reason, this report adopts a lexicon of terms and it is used consistently throughout. In several places in the report, discovery timelines are provided. The various sources of stem cells are described, as are the techniques used to isolate and develop them. A comprehensive listing of various stem cell isolation and characterizations is also included. In order to ensure the reader is provided information both about the basic biology of stem cells, and their therapeutic potential, the report contains several chapters focused on particular diseases which might benefit from stem cell research. These chapters on the use of hematopoietic stem cells, followed by focus features on specific nervous system diseases, diabetes, heart disease, and autoimmune diseases serve merely as examples of the many applications of stem cells that are being pursued. Also included are features that review aspects of stem cells as therapeutic delivery tools for gene therapy and, importantly, the safety considerations for developing stem cell-based therapies.