![]() |
Welcome to Loot.co.za!
Sign in / Register |Wishlists & Gift Vouchers |Help | Advanced search
|
Your cart is empty |
||
Practically every display technology in use today relies on the flat, energy-efficient construction made possible by liquid crystals. These displays provide visually-crisp, vibrantly-colored images that a short time ago were thought only possible in science fiction. Liquid crystals are known mainly for their use in display technologies, but they also provide many diverse and useful applications: adaptive optics, electro-optical devices, films, lasers, photovoltaics, privacy windows, skin cleansers and soaps, and thermometers. The striking images of liquid crystals changing color under polarized lighting conditions are even on display in many museums and art galleries - true examples of science meeting art. Yet, although liquid crystals provide us with visually stunning displays, fascinating applications, and are a rich and fruitful source of interdisciplinary research, their full potential may remain untapped.
This updated and revised edition of a widely acclaimed and
successful text for undergraduates examines topology of recent
compact surfaces through the development of simple ideas in plane
geometry. Containing over 171 diagrams, the approach allows for a
straightforward treatment of its subject area. It is particularly
attractive for its wealth of applications and variety of
interactions with branches of mathematics, linked with surface
topology, graph theory, group theory, vector field theory, and
plane Euclidean and non-Euclidean geometry.
This volume comprehensively examines the synthesis, spectroscopic properties, reactivity and catalytic applications of all phosphorus-carbon heterocycles. The most significant phosphorus heterocycles incorporating other heteroatoms, such as heterophospholes and heterophosphinines, are also covered. The introductory chapter describes the rise of this field that has developed, over the years, into the fourth major branch of heterocyclic chemistry. Written by several founders of the field, this book should prove a useful reference work within the domain for years to come and provide the basis for courses on heterocyclic chemistry and homogenous catalysis. All those interested in phosphorus heterocycles for applications in co-ordination chemistry, homogenous catalysis, molecular materials and biochemistry, should find this volume useful.
First published in 1967, Advances in Microbial Physiology is one of
Academic Press's most renowned and acclaimed series. The Editors
have always striven to provide a diverse range of top-quality
papers on all aspects of microbial physiology. Coverage of
'holistic' topics or whole cell studies such as ion fluxes, stress
responses and motility have gone hand-in-hand with detailed
biochemical analyses of individual transport systems, electron
transport pathways and many aspects of metabolism.
The first part of this text provides an overview of the physics of lasers and it describes some of the more common types of lasers and their applications. The production of laser light requires the formation of a resonant cavity where stimulated emission of radiation occurs. The light produced in this way is intense, coherent and monochromatic. Applications of lasers include CD/DVD players, laser printers and fiber optic communication devices. While these devices depend largely on the monochromaticity and coherence of the light that lasers produce, other well-known applications, such as laser machining and laser fusion depend on the intensity of laser light. The second part of the book describes the phenomenon of Bose-Einstein condensation. These condensates represent a state of matter that exists in some dilute gases at very low temperature as predicted first by Satyendra Nath Bose and Albert Einstein. Bose-Einstein condensates were first observed experimentally in 1995 by Eric Cornell and Carl Wieman at the University of Colorado, and shortly thereafter by Wolfgang Ketterle at the Massachusetts Institute of Technology. The experimental techniques used to create a Bose-Einstein condensate provide an interesting and unconventional application of lasers: the cooling and confinement of a dilute gas at very low temperature.
People working in development of drugs, pesticides, washing
detergents, etc., are obliged by law to conduct analyses of the
"metabolic pathways" or "maps" for the chemical compounds that they
are using or proposing.
Open microfluidics - the study of microflows having a boundary with surrounding air - encompasses paper- or thread-based microfluidics, droplet microfluidics and open-channel microfluidics. Open-channel microflow is a flow at the micro-scale, guided by solid structures, and having at least a free boundary (with air or vapor) other than the advancing meniscus. This book is devoted to the study of open-channel microfluidics which, contrary to paper or thread or droplet microfluidics, is still very sparsely documented, but bears many new applications in biology, biotechnology, medicine, material and space sciences. Capillarity being the principal force triggering an open microflow, the principles of capillarity are first recalled. The onset of open-channel microflow is next analyzed and the fundamental notion of generalized Cassie angle - the apparent contact angle which accounts for the presence of air - is presented. The theory of the dynamics of open-channel microflows is then developed, using the notion of averaged friction length, which accounts for the presence of air along the boundaries of the flow domain. Different channel morphologies are studied and geometrical features, such as valves and capillary pumps, are examined. An introduction to two-phase open-channel microflows is also presented, showing that immiscible plugs can be transported by an open-channel flow. Finally, a selection of interesting applications in the domains of space, materials, medicine and biology is provided, showing the potentialities of open-channel microfluidics.
Retaining the introductory flavor of the now classic First Edition,
this revision includes all the latest techniques in the field. New
information on methods of radio tag harnessing, new sections on
satellite tracking techniques and new types of data analysis are
all included. Still the only comprehensive, up-to-date,
introduction to this fundamental technique for wildlife and
behavioral biologists.
Parkinson's disease is a neurological disorder with cardinal motor signs of resting tremor, bradykinesia and lead-pipe rigidity. In addition, many patients display non-motor symptoms, including a diminished sensation of smell, gastrointestinal problems, various disorders of sleep and some cognitive impairment. These clinical features - particularly the motor signs - manifest after a progressive death of many dopaminergic neurones in the brain. Conventional therapies can reduce the signs of the disease, however, the progression of this neuronal demise has proved difficult to slow or stop, and the condition is relentlessly progressive. Hence, there is a real need to develop a treatment that is neuroprotective and slows the pathology of the disease effectively. At present, there are several neuroprotective therapies in the experimental pipeline, but these are for the patients of tomorrow. This book focuses on two therapies that are readily available for the patients of today. They involve the use of exercise and light (i.e. photobiomodulation: the use of red to infrared light therapy on body tissues). Given the heterogeneity of Parkinson's disease in humans, tackling the condition from a range of different angles - with several different therapies - would only serve to enhance the positive outcomes. This book considers the use of exercise and light therapies, proposing that they have the potential to make a powerful "dynamic duo", offering a most effective neuroprotective treatment option to patients.
Scope of Publication Design Purchase Supply Operation
Semiconductors and Modern Electronics is a brief introduction to the physics behind semiconductor technologies. Chuck Winrich explores the topic of semiconductors from a qualitative approach to understanding the theories and models used to explain semiconductor devices, which is intended to bring the advanced ideas behind semiconductors to a broader audience of students who will not major in physics. Applications of semiconductors are explored and understood through the models developed in the book. Much of the inspiration for this text comes from Winrich's experience teaching a general electronics course to students majoring in business. The goal of that class, and this work, is to bring forward the science behind semiconductors, and then to look at how that science affects the lives of people.
Multigrid presents both an elementary introduction to multigrid
methods for solving partial differential equations and a
contemporary survey of advanced multigrid techniques and real-life
applications.
This third edition of Peter Bernath's successful Spectra of Atoms and Molecules is designed to provide advanced undergraduates and graduate students a working knowledge of the vast field of spectroscopy. Also of interest to chemists, physicists, astronomers, atmospheric scientists, and engineers, this volume emphasizes the fundamental principles of spectroscopy with the primary goal of teaching the interpretation of spectra. Features include a presentation of group theory needed to understand spectroscopy, detailed worked examples and a large number of excellent problems at the end of each chapter. Prof. Bernath provides a large number of diagrams and spectra which have been specifically recorded for this book. Molecular symmetry, matrix representation of groups, quantum mechanics, and group theory are among the topics covered; atomic, rotational, vibrational, electronic and Raman spectra are analyzed. Bernath's clear treatment of the confusing topic of line strengths as needed for quantitative applications is featured. This much-needed new edition has been updated to include the 2010 CODATA revision of physical constants, and a large number of corrections and clarifications. Responding to student requests, the main new feature is the addition of detailed worked examples in each chapter. Spectra of Atoms and Molecules, 3e will help demystify spectroscopy by showing readers the necessary steps in a derivation, as well as the final result.
This volume brings together contributions by leading researchers
covering a wide scope so characteristic of fluorine chemistry. It
is a monograph of historical character comprising personalized
accounts of progress and events in areas of particular interest.
Foundations of Engineering Acoustics takes the reader on a journey
from a qualitative introduction to the physical nature of sound,
explained in terms of common experience, to mathematical models and
analytical results which underlie the techniques applied by the
engineering industry to improve the acoustic performance of their
products. The book is distinguished by extensive descriptions and
explanations of audio-frequency acoustic phenomena and their
relevance to engineering, supported by a wealth of diagrams, and by
a guide for teachers of tried and tested class demonstrations and
laboratory-based experiments.
These volumes cover all the major aspects of numerical analysis. This particular volume discusses the solution of equations in Rn, Gaussian elimination, techniques of scientific computer, the analysis of multigrid methods, wavelet methods, and finite volume methods.
This volume of "Progress in Heterocyclic Chemistry" (PHC) is the twelfth annual review of the literature, covering the work published on most of the important heterocyclic ring systems during 1999, with inclusions of earlier material as appropriate. As in PHC-11, there are also three specialized reviews in this year's volume. In the inaugural chapter, Michael Groziak revitalizes the field of boron heterocycles, a relatively obscure class of heterocycles, but with a promising future. Heterocyclic phosphorus ylides are similarly a little known but useful class of compounds and Alan Aitken and Tracy Massil have provided a comprehensive review of them in Chapter 2. In Chapter 3 Jack Li discusses the remarkably versatile palladium chemistry in pyridine alkaloid synthesis. The subsequent chapters deal with recent advances in the field
of heterocyclic chemistry arranged by increasing ring size and with
emphasis on synthesis and reactions.
Volume 39 is a standard volume with reviews on three different topics: the effect of the Exxon Valdez oil spill on the Alaskan ecosystem, the reproduction and development of peracarida (abundant marine crustaceans), and remote sensing of the global light-fishing fleet.
The nuclear Nonproliferation Treaty (NPT) is the cornerstone of nonproliferation and disarmament efforts, yet its negotiation and success was not inevitable. This book aims to address the developments that led to the negotiation of the treaty, examine its implementation, and address challenges that the NPT faces going forward. It begins with an overview of precursor efforts to establish international limits on nuclear weapons and why these efforts failed. It also looks at the changes in the political environment and technical advances, which together increased the threat of proliferation and drove states to negotiate the NPT. The second chapter considers the negotiation of the treaty itself and looks at the gap between US and Soviet positions on key areas like alliance control of nuclear weapons, and how the two governments found common ground on nonproliferation language. It also explores the critical role played by the non-aligned movement to push inclusion of disarmament provisions that would become the foundation for Article VI of the treaty and the hesitancy of nuclear-armed states to support disbarment language and timelines. Chapter 3 of the book focuses on implementation of the NPT and its initial successes in heading off states with nuclear weapons research programs. It addresses how the treaty responded to challenges like the dissolution of the Soviet Union and gaps identified by the illicit nuclear weapons programs in Iraq and North Korea in the early 1990s. Chapter 3 also includes a section on the debate in 1995 over extending the treaty indefinitely, and the compromises reached to satisfy the concerns of the non-nuclear weapon states. Finally, Chapter 4 addresses some of the outstanding challenges to the NPT that remain unresolved, such as the continued failure to convene a conference on the Middle East WMD-free zone and specify the consequences of withdrawing from the NPT, and repurposing civilian nuclear technology transferred under the treaty weapons purposes. It also looks at how the ban treaty under negotiations in the United Nations will support or undermine the NPT's objectives.
Chemical Thermodynamics: Principles and Applications presents a
thorough development of the principles of thermodynamics--an
old
Nanogels are three-dimensional nanosized networks that are formed by physically or chemically cross-linking polymers. They have been explored as a drug-delivery system due to their biocompatibility, high stability, particle-size adjustment, drug-loading capability and modification of the surface for active targeting by cognate receptors on the target cells of tissues. Nanogels can respond to stimuli such as pH, temperature, light and redox, which results in the controlled release of drugs and targeting of site by environmental stimuli and prevents accumulation in non-target tissues, minimizing the side effects of the drug. This book aims to provide a general introduction to nanogels and the design of various stimuli-sensitive nanogels that can control drug release in response to specific stimuli.
A venerable tradition in the metaphysics of science commends ontological reduction: the practice of analysis of theoretical entities into further and further proper parts, with the understanding that the original entity is nothing but the sum of these. This tradition implicitly subscribes to the principle that all the real action of the universe (also referred to as its "causation") happens at the smallest scales-at the scale of microphysics. A vast majority of metaphysicians and philosophers of science, covering a wide swath of the spectrum from reductionists to emergentists, defend this principle. It provides one pillar of the most prominent theory of science, to the effect that the sciences are organized in a hierarchy, according to the scales of measurement occupied by the phenomena they study. On this view, the fundamentality of a science is reckoned inversely to its position on that scale. This venerable tradition has been justly and vigorously countered-in physics, most notably: it is countered in quantum theory, in theories of radiation and superconduction, and most spectacularly in renormalization theories of the structure of matter. But these counters-and the profound revisions they prompt-lie just below the philosophical radar. This book illuminates these counters to the tradition principle, in order to assemble them in support of a vaster (and at its core Aristotelian) philosophical vision of sciences that are not organized within a hierarchy. In so doing, the book articulates the principle that the universe is active at absolutely all scales of measurement. This vision, as the book shows, is warranted by philosophical treatment of cardinal issues in the philosophy of science: fundamentality, causation, scientific innovation, dependence and independence, and the proprieties of explanation.
In this volume, inorganic, organic, and bioorganic chemistry are
represented in contributions from around the world. Pioneering work
in self-assembled structures organized by the use of transition
metals is described in chapter 1, followed by details of extensive
studies of self-assembled structures formed from various
biomolecules in chapter 2. The next two chapters describe the
formation of spherical molecular containers and their understanding
of such structures based on Platonic and Archimedean solids, and
the fascinating family of synthetic peptide receptors and the
interactions that can be explored using these host molecules. In
chapter 5 a mixture of computational chemistry, drug design, and
synthetic organic and inorganic chemistry in the development of
superoxide dismutase mimics is described. The final two chapters
discuss the bioorganic and supramolecular principles required for
the design of synthetic artificial enzymes, and the supramolecular
self-assembly and its possible role in the origin of life.
Natural products play an integral and ongoing role in promoting numerous aspects of scientific advancement, and many aspects of basic research programs are intimately related to natural products. The significance, therefore, of the Studies in Natural Product Chemistry series, edited by Professor Atta-ur-Rahman, cannot be overestimated. This volume, in accordance with previous volumes, presents us with cutting-edge contributions of great importance.
Paleomagnetism is the study of the fossil magnetism in rocks. It
has been paramount in determining that the continents have drifted
over the surface of the Earth throughout geological time. The
fossil magnetism preserved in the ocean floor has demonstrated how
continental drift takes place through the process of sea-floor
spreading. The methods and techniques used in paleomagnetic studies
of continental rocks and of the ocean floor are described and then
applied to determining horizontal movements of the Earth's crust
over geological time. An up-to-date review of global paleomagnetic
data enables 1000 million |
You may like...
Elements of Petroleum Geology
Richard C. Selley, Stephen A Sonnenberg
Paperback
R2,083
Discovery Miles 20 830
SPECC: Specification Language and…
Daniel D. Gajski, Jianwen Zhu, …
Hardcover
R4,190
Discovery Miles 41 900
|