Fluctuations in High [beta]{sub P} Plasmas in DIII-D.

Fluctuations in High [beta]{sub P} Plasmas in DIII-D. PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4

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Book Description
In our investigation of improved confinement in high poloidal beta ([beta]{sub p}= 2 to 4) advanced tokamak experiments, we observe that the internal MHD activity evolves from an m/n = 2/1 to a 3/1 structure coincident with q{sub o} rising above 2, and consistent with the GATO code stability analysis. The plasma eventually evolves to a quiescent state at which time the stored energy increases, mostly as a result of improved particle confinement. The bootstrap fraction rises to 80%. The measured plasma pressure profiles during this time are calculated to be stable to high-n ballooning modes consistent with operation of the core in the second stable regime. The sustained improvement in confinement is ultimately limited by our ability to control the toroidal current profile.

Fluctuations in High [beta]{sub P} Plasmas in DIII-D.

Fluctuations in High [beta]{sub P} Plasmas in DIII-D. PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4

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Book Description
In our investigation of improved confinement in high poloidal beta ([beta]{sub p}= 2 to 4) advanced tokamak experiments, we observe that the internal MHD activity evolves from an m/n = 2/1 to a 3/1 structure coincident with q{sub o} rising above 2, and consistent with the GATO code stability analysis. The plasma eventually evolves to a quiescent state at which time the stored energy increases, mostly as a result of improved particle confinement. The bootstrap fraction rises to 80%. The measured plasma pressure profiles during this time are calculated to be stable to high-n ballooning modes consistent with operation of the core in the second stable regime. The sustained improvement in confinement is ultimately limited by our ability to control the toroidal current profile.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 602

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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Government Reports Announcements & Index

Government Reports Announcements & Index PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 574

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Book Description


Voltage Gated Sodium Channels

Voltage Gated Sodium Channels PDF Author: Peter C. Ruben
Publisher: Springer Science & Business Media
ISBN: 3642415881
Category : Medical
Languages : en
Pages : 328

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Book Description
A number of techniques to study ion channels have been developed since the electrical basis of excitability was first discovered. Ion channel biophysicists have at their disposal a rich and ever-growing array of instruments and reagents to explore the biophysical and structural basis of sodium channel behavior. Armed with these tools, researchers have made increasingly dramatic discoveries about sodium channels, culminating most recently in crystal structures of voltage-gated sodium channels from bacteria. These structures, along with those from other channels, give unprecedented insight into the structural basis of sodium channel function. This volume of the Handbook of Experimental Pharmacology will explore sodium channels from the perspectives of their biophysical behavior, their structure, the drugs and toxins with which they are known to interact, acquired and inherited diseases that affect sodium channels and the techniques with which their biophysical and structural properties are studied.

China

China PDF Author: World Bank
Publisher: World Bank Publications
ISBN: 9780821323953
Category : Business & Economics
Languages : en
Pages : 1422

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Book Description
The Republic of Korea's industrial policy has directed that nation's economy through nearly three decades of spectacular growth. But the authors of this paper maintain that this policy is showing signs of being outmoded. The time has come, the authors argue, for the Korean government to stop managing the economy's structural development and to redefine the responsibilities of business and government. Under this proposed compact, the allocation of resources would shift from the government to the private industrial and financial sectors. The transformation of the government bureaucracy from an ad hoc policy role to one of a transparent and predictable regulator is a key to the success of this undertaking. These new directions would present the government with enormous challenges. Greater competitive discipline and regulatory oversight would be required. While dealing with the complexities of the transition, the government would have to maintain macroeconomic stability and the momentum of savings and investment. For comparison, the study examines the industrial economies of France, Germany, Japan, and the United States, which underwent similar shifts.

Drifting on Alien Winds

Drifting on Alien Winds PDF Author: Michael Carroll
Publisher: Springer Science & Business Media
ISBN: 1441969179
Category : Science
Languages : en
Pages : 247

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Book Description
Ever since the Montgolfier's hot air balloon carried a chicken, a goat, and a duck into the Parisian skies, scientists have dreamed of contraptions to explore the atmosphere. With the advent of the space age, new airborne inventions were needed. From the Soviet Venus balloons to the advanced studies of blimps and airplanes for the atmospheres of Mars and Titan, Drifting on Alien Winds surveys the many creative and often wacky ideas for exploring alien skies. Through historical photographs and stunning original paintings by the author, readers also explore the weather on planets and moons, from the simmering acid-laden winds of Venus to liquid methane-soaked skies of Titan.

Nondestructive Materials Characterization

Nondestructive Materials Characterization PDF Author: Norbert G. H. Meyendorf
Publisher: Springer Science & Business Media
ISBN: 3662089882
Category : Science
Languages : en
Pages : 435

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Book Description
With an emphasis on aircraft materials, this book describes techniques for the material characterization to detect and quantify degradation processes such as corrosion and fatigue. It introduces readers to these techniques based on x-ray, ultrasonic, optical and thermal principles and demonstrates the potential of the techniques for a wide variety of applications concerning aircraft materials, especially aluminum and titanium alloys. The advantages and disadvantages of various techniques are evaluated.

Mammalian Reproductive Biology

Mammalian Reproductive Biology PDF Author: F. H. Bronson
Publisher: University of Chicago Press
ISBN: 9780226075594
Category : Nature
Languages : en
Pages : 340

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Book Description
A unique interdisciplinary overview of the way mammals reproduce, this volume synthesizes research done by laboratory physiologists, behaviorists, population ecologists, and animal breeders. F. H. Bronson has drawn together the disparate literature in these areas to provide students and researchers with a comprehensive and biologically integrated approach to the study of mammalian reproduction. Each chapter presents a wealth of issues and questions, summarizing the current consensus on interpretations as well as viable alternatives under debate. The book is principally concerned with how environmental factors regulate reproduction. Bronson proposes that a mammal's reproductive performance routinely reflects simultaneous regulation by several environmental factors that interact in fascinatingly complex ways. Environment is defined broadly, and the chapters give equal weight to ecological and physiological factors when considering how variables such as food availability, ambient temperature, photoperiod, and social cues interact to regulate a mammal's reproduction. Particular attention is given to seasonal breeding, and a taxonomically arranged chapter underscores the importance of comparative and evolutionary biology to an understanding of mammalian reproduction. Mammalian Reproductive Biology is a powerful argument for the value and importance of interdisciplinary approaches to research. Its almost 1,500 references constitute the most comprehensive bibliography to date on this topic. Bronson also gives detailed consideration to promising areas for future research. Well organized, carefully planned, and clearly written, this book will become standard reading for scientists concerned with any aspect of mammalian biology.

Animal Productivity

Animal Productivity PDF Author: H. C. Srivastava
Publisher: Oxford & IBH Publishers
ISBN:
Category : Livestock productivity
Languages : en
Pages : 660

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Book Description


The Nervous System and the Heart

The Nervous System and the Heart PDF Author: Gert J. Ter Horst
Publisher: Springer Science & Business Media
ISBN:
Category : Medical
Languages : en
Pages : 592

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Book Description
There are physiological bases for associations of the heart with emotions, and with the apparently universal increased mortality in winter. Thirteen contributions integrate expertise in cardiology and neuroscience in overviewing the latest knowledge about head-heart interactions. The first five chapters explain autonomic control of cardiovascular functions, the neural supply of the heart, and neuropathology. Part II examines the effects of stress on the hypothalamo-pituitary-adrenal system and the heart. Part III treats the neurobiology and neuroimaging of cardiac pain. Next, humoral factors in cardiovascular regulation and as mediators of inflammation in coronary artery disease are considered. Finally, the relationship between heart disease and cognitive/neuropsychiatric disorders is discussed. Includes photomicrographs, schematic drawings, and nice large print.