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Books > Science & Mathematics > Physics > Applied physics & special topics

Geoscientists at Crime Scenes - A Companion to Forensic Geoscience (Hardcover, 1st ed. 2017): Rosa Maria Di Maggio, Pier Matteo... Geoscientists at Crime Scenes - A Companion to Forensic Geoscience (Hardcover, 1st ed. 2017)
Rosa Maria Di Maggio, Pier Matteo Barone
R3,834 Discovery Miles 38 340 Ships in 10 - 15 working days

This book presents the forensic geoscience in general and, in particular, in Italy and their application to peculiar crimes. Italy is internationally relevant due to the presence of different kinds of "geo-crimes" (in the first place, environmental mafia), and is emblematic to understanding the best way to fight these crimes. This book will not only offer a new view point to comprehending these "geo-crimes", but also fresh and updated results of the different methods applied to fight against these crimes. This book is unique in that it is not a collection of articles but an individual work with the same theme beginning with a state-of-the-art of these disciplines to their international value passing through several case studies.

A Dirty Window - Diffuse and Translucent Molecular Gas in the Interstellar Medium (Hardcover, 1st ed. 2017): Loris Magnani,... A Dirty Window - Diffuse and Translucent Molecular Gas in the Interstellar Medium (Hardcover, 1st ed. 2017)
Loris Magnani, Steven N. Shore
R5,817 Discovery Miles 58 170 Ships in 12 - 17 working days

This book provides an introduction to the physics of interstellar gas in the Galaxy. It deals with the diffuse interstellar medium which supplies a complex environment for exploring the neutral gas content of a galaxy like the Milky Way and the techniques necessary for studying this non-stellar component. After an initial exposition of the phases of the interstellar medium and the role of gas in a spiral galaxy, the authors discuss the transition from atomic to molecular gas. They then consider basic radiative transfer and molecular spectroscopy with particular emphasis on the molecules useful for studying low-density molecular gas. Observational techniques for investigating the gas and the dust component of the diffuse interstellar medium throughout the electromagnetic spectrum are explored emphasizing results from the recent Herschel and Planck missions. A brief exposition on dust in the diffuse interstellar medium is followed by a discussion of molecular clouds in general and high-latitude molecular clouds in particular. Ways of calibrating CO observations with the molecular hydrogen content of a cloud are examined along with the dark molecular gas controversy. High-latitude molecular clouds are considered in detail as vehicles for applying the techniques developed in the book. Given the transient nature of diffuse and translucent molecular clouds, the role of turbulence in the origin and dynamics of these objects is examined in some detail. The book is targeted at graduate students or postdocs who are entering the field of interstellar medium studies.

Broadband Measurement and Reduction of Quantum Radiation Pressure Noise in the Audio Band (Hardcover, 1st ed. 2020): Jonathan... Broadband Measurement and Reduction of Quantum Radiation Pressure Noise in the Audio Band (Hardcover, 1st ed. 2020)
Jonathan Cripe
R3,020 Discovery Miles 30 200 Ships in 10 - 15 working days

This book presents a direct measurement of quantum back action, or radiation pressure noise, on a macroscopic object at room temperature across a broad bandwidth in the audio range. This noise source was predicted to be a limitation for gravitational wave interferometers in the 1980s, but it has evaded direct characterization in the gravitational wave community due to the inherent difficult of reducing thermal fluctuations below the quantum back action level. This back action noise is a potential limitation in Advanced LIGO and Advanced Virgo, and Cripe's experiment has provided a platform for the demonstration of quantum measurement techniques that will allow quantum radiation pressure noise to be reduced in these detectors. The experimental techniques Cripe developed for this purpose are also applicable to any continuous measurement operating near the quantum limit, and could lead to the possibility of observing non-classical behavior of macroscopic objects.

Information and On-Line Data in Astronomy (Hardcover, illustrated edition): Daniel Egret, Miguel A. Albrecht Information and On-Line Data in Astronomy (Hardcover, illustrated edition)
Daniel Egret, Miguel A. Albrecht
R2,656 Discovery Miles 26 560 Ships in 12 - 17 working days

The ability of storing, managing and giving access to the huge quantity of data collected by astronomical observatories is one of the major challenges of modern astronomy. At the same time, the growing complexity of data systems implies a change of concepts: the scientist has to manipulate data as well as information. Developments of the "World Wide Web" bring answers to these problems. The book presents a wide selection of databases, archives, data centres and information systems. Descriptions are included, together with their scientific context and motivations. This volume should prove a useful tool for astronomers, librarians, data specialists and computer engineers.

Multiscale Seismic Tomography (Hardcover, 2015 ed.): Dapeng Zhao Multiscale Seismic Tomography (Hardcover, 2015 ed.)
Dapeng Zhao
R4,583 R3,708 Discovery Miles 37 080 Save R875 (19%) Ships in 12 - 17 working days

This book on multiscale seismic tomography, written by one of the leaders in the field, is suitable for undergraduate and graduate students, researchers, and professionals in Earth and planetary sciences who need to broaden their horizons about seismotectonics, volcanism, and interior structure and dynamics of the Earth and Moon. It describes the state-of-the-art in seismic tomography, with emphasis on the new findings obtained by applying tomographic methods in local, regional, and global scales for understanding the generating mechanism of large and great earthquakes such as the 2011 Tohoku-oki earthquake (Mw 9.0), crustal and upper mantle structure, origin of active arc volcanoes and intraplate volcanoes including hotspots, heterogeneous structure of subduction zones, fate of subducting slabs, origin of mantle plumes, mantle convection, and deep Earth dynamics. The first lunar tomography and its implications for the mechanism of deep moonquakes and lunar evolution are also introduced.

Atmospheric Acoustics (Hardcover, Digital original): Xunren Yang Atmospheric Acoustics (Hardcover, Digital original)
Xunren Yang; Contributions by Science Press
R5,095 Discovery Miles 50 950 Ships in 12 - 17 working days

This book concisely expounds the fundamental concepts, phenomena, theories and procedures in a complete and systematic sense. In this book, not only almost all the important achievements from predecessors but also the contributions from the author himself have been summed up profoundly. Starting from the derivation of fundamental equations, various classical acoustical phenomena such as reflection, refraction, scattering diffraction and absorption in atmosphere, as well as the influences of gravitation and rotation of the earth on the behaviors of different atmospheric waves including acoustic waves, have been discussed in viewpoints of wave acoustics and geometrical acoustics respectively. The recent developments of several computation methods in the field of atmospheric acoustics have been introduced in some detail. As for the application aspects, atmospheric remote sensing has been discussed from the angle of inverse problems.

Particle Interactions in High-Temperature Plasmas (Hardcover, 1st ed. 2017): Oliver James Pike Particle Interactions in High-Temperature Plasmas (Hardcover, 1st ed. 2017)
Oliver James Pike
R3,526 Discovery Miles 35 260 Ships in 12 - 17 working days

This thesis makes two important contributions to plasma physics. The first is the extension of the seminal theoretical works of Spitzer and Braginskii, which describe the basics of particle interactions in plasma, to relativistic systems. Relativistic plasmas have long been studied in high-energy astrophysics and are becoming increasingly attainable in the laboratory. The second is the design of a new class of photon-photon collider, which is the first capable of detecting the Breit-Wheeler process. Though it offers the simplest way for light to be converted into matter, the process has never been detected in the 80 years since its theoretical prediction. The experimental scheme proposed here exploits the radiation used in inertial confinement fusion experiments and could in principle be implemented in one of several current-generation facilities.

An Introduction to Underwater Acoustics - Principles and Applications (Hardcover, 2nd ed. 2010): Xavier Lurton An Introduction to Underwater Acoustics - Principles and Applications (Hardcover, 2nd ed. 2010)
Xavier Lurton
R10,699 Discovery Miles 106 990 Ships in 12 - 17 working days

Sound waves are the only practical means of remote investigation of the sea and its bottom and transmission in seawater. Underwater acoustics has become one of the major technologies used in the exploration and exploitation of the oceans for scientific, industrial, or military/naval purposes. It is widely employed in the fields of ocean engineering, seafloor mapping, defence, oceanography, navigation, and fisheries.

Dr Xavier Lurton is a renowned specialist in underwater acoustics. He has worked in this field as a scientist, engineer, project manager and teacher since 1981 and has participated in many scientific projects, systems developments and at-sea cruises. In the second edition of his book, Dr Lurton provides an updated and extended introduction to underwater acoustics, including coverage of the physical processes and their basic modeling, different underwater acoustic systems and their practical applications and a description and assessment of the various technologies. Dr Lurton has extensive experience as a lecturer in undergraduate and postgraduate schools, including naval academies. This book is based on his direct, first-hand experience of the many aspects of underwater acoustics in seas around the world, at the forefront of current research and development efforts.

Nanoneuroscience - Structural and Functional Roles of the Neuronal Cytoskeleton in Health and Disease (Hardcover, 2010 ed.):... Nanoneuroscience - Structural and Functional Roles of the Neuronal Cytoskeleton in Health and Disease (Hardcover, 2010 ed.)
Nancy J. Woolf, Avner Priel
R4,615 Discovery Miles 46 150 Ships in 10 - 15 working days

Nanoneuroscience is the study of computationally relevant biomolecules found inside neurons. Because of recent technological advances at the nanometer scale, scientists have at their disposal increasingly better ways to study the brain and the biophysics of its molecules. This book describes how biomolecules contribute to the operations of synapses and perform other computationally relevant functions inside dendrites. These biomolecular operations considerably expand the brain-computer analogy - endowing each neuron with the processing power of a silicon-based multiprocessor. Amazingly, the brain contains hundreds of billions of neurons.

Geoengineering Responses to Climate Change - Selected Entries from the Encyclopedia of Sustainability Science and Technology... Geoengineering Responses to Climate Change - Selected Entries from the Encyclopedia of Sustainability Science and Technology (Hardcover, 2013 ed.)
Tim Lenton, Naomi Vaughan
R3,861 R3,572 Discovery Miles 35 720 Save R289 (7%) Ships in 12 - 17 working days

Failure by the international community to make substantive progress in reducing CO2 emissions, coupled with recent evidence of accelerating climate change, has brought increasing urgency to the search for additional remediation approaches. This book presents a selection of state-of-the-art geoengineering methods for deliberately reducing the effects of anthropogenic climate change, either by actively removing greenhouse gases from the atmosphere or by decreasing the amount of sunlight absorbed at the Earth's surface. These methods contrast with more conventional mitigation approaches which focus on reducing emissions of greenhouse gases, especially carbon dioxide. Geoengineering technologies could become a key tool to be used in conjunction with emissions reduction to limit the magnitude of climate change. Featuring authoritative, peer-reviewed entries from the Encyclopedia of Sustainability Science and Technology, this book presents a wide range of climate change remediation technologies.

Active Control of Flexible Structures - From Modeling to Implementation (Hardcover, 2010 Ed.): Alberto Cavallo, Giuseppe De... Active Control of Flexible Structures - From Modeling to Implementation (Hardcover, 2010 Ed.)
Alberto Cavallo, Giuseppe De Maria, Ciro Natale, Salvatore Pirozzi
R3,038 Discovery Miles 30 380 Ships in 10 - 15 working days

A complete solution for problems of vibration control in structures that may be subject to a broadband primary vibration field, this book addresses the following steps: experimental identification of the dynamic model of the structure; optimal placement of sensors and actuators; formulation of control constraints in terms of controller frequency response shape; controller design and simulation; and controller implementation and rapid prototyping. The identification procedure is a gray-box approach tailored to the estimation of modal parameters of large-scale flexible structures. The actuator/sensor placement algorithm maximizes a modal controllability index improving the effectiveness of the control. Considering limitations of sensors and actuators, the controller is chosen as a stable, band-pass MIMO system resulting from the closed-form solution of a robust control problem. Experimental results on an aeronautical stiffened skin panel are presented using rapid-prototyping hardware.

Handbook of Photomedicine (Paperback): Michael R. Hamblin, Ying-Ying Huang Handbook of Photomedicine (Paperback)
Michael R. Hamblin, Ying-Ying Huang
R1,680 Discovery Miles 16 800 Ships in 12 - 17 working days

Providing the most comprehensive, up-to-date coverage of this exciting biomedical field, Handbook of Photomedicine gathers together a large team of international experts to give you a complete account of the application of light in healthcare and medical science. The book progresses logically from the history and fundamentals of photomedicine to diverse therapeutic applications of light, known collectively as phototherapies. It facilitates your understanding of human diseases caused by light, the rationale for photoprotection, and major applications of phototherapy in clinical practice. The handbook begins with a series of historical vignettes of pioneers from the last two centuries. It also presents the fundamentals of physics and biology as applied to photomedicine. It next examines conditions and diseases caused by light, including skin cancer, dermatoses, and immunosuppression. The remainder of the book focuses on the most important clinical therapeutic applications of different kinds of light that vary in both wavelength and intensity. The book discusses ultraviolet phototherapy for skin diseases and infections and presents the basic science of photodynamic therapy and its use in cancer therapy and other medical specialties. It then covers mechanistic studies and clinical applications of low-level laser (light) therapy as well as the use of high power or surgical laser therapy in specialties, such as dentistry and dermatology. The book concludes with a collection of miscellaneous types of phototherapy.

Very-high-energy Gamma-ray Observations of Pulsar Wind Nebulae and Cataclysmic Variable Stars with MAGIC and Development of... Very-high-energy Gamma-ray Observations of Pulsar Wind Nebulae and Cataclysmic Variable Stars with MAGIC and Development of Trigger Systems for IACTs (Hardcover, 1st ed. 2017)
Ruben Lopez Coto
R3,633 Discovery Miles 36 330 Ships in 12 - 17 working days

This thesis is a comprehensive work that addresses many of the open questions currently being discusssed in the very-high-energy (VHE) gamma-ray community. It presents a detailed description of the MAGIC telescope together with a glimpse of the future Cherenkov Telescope Array (CTA). One section is devoted to the design, development and characterization of trigger systems for current and future imaging atmospheric Cherenkov telescopes. The book also features a state-of-the-art description of pulsar wind nebula (PWN) systems, the study of the multi-TeV spectrum of the Crab nebula, as well as the discovery of VHE gamma rays at the multiwavelength PWN 3C 58, which were sought at these wavelengths for more than twenty years. It also includes the contextualization of this discovery amongst the current population of VHE gamma-ray PWNe. Cataclysmic variable stars represent a new source of gamma ray energies, and are also addressed here. In closing, the thesis reports on the systematic search for VHE gamma-ray emissions of AE Aquarii in a multiwavelength context and the search for VHE gamma-ray variability of novae during outbursts at different wavelengths.

Physical Principles of Biomembranes and Cells (Hardcover, 1st ed. 2018): Kazuo Ohki, Hidetake Miyata Physical Principles of Biomembranes and Cells (Hardcover, 1st ed. 2018)
Kazuo Ohki, Hidetake Miyata
R3,020 Discovery Miles 30 200 Ships in 10 - 15 working days

This book describes how biologically available free energy sources (ATP, chemical potential, and membrane potentials, among others) can be used to drive synthetic reactions, signaling in cells, and various types of motion such as membrane traffic, active transport, and cell locomotion. As such, it approaches the concept of the energy cycle of life on Earth from a physical point of view, covering topics ranging from an introduction to chemical evolution, to an examination of the catalytic activity of enzymes associated with the genome in Darwinian evolution. The author introduces the relationship between functions and physical properties in biomembranes, explaining the methods and equipment used in biophysics research to help researchers unravel the still-unsolved mysteries of life. The physical principles needed to understand the cellular functions are provided; these functions are associated with biomembranes and regulated by physical properties of the lipid bilayer such as membrane fluidity, phase transition, and phase separation, as shown in lipid rafts. Other key dynamic aspects of life (cell locomotion, cytoskeletal dynamics, and sensitivities of the cell to physical stimuli such as external forces and temperature) are also discussed. Lastly, readers will learn how life on Earth and its ecological system are maintained by solar energy, and be provided further information on the problems accompanying global warming.

Modeling, Simulation and Optimization of Bipedal Walking (Hardcover, 2013 ed.): Katja Mombaur, Karsten Berns Modeling, Simulation and Optimization of Bipedal Walking (Hardcover, 2013 ed.)
Katja Mombaur, Karsten Berns
R3,974 R3,684 Discovery Miles 36 840 Save R290 (7%) Ships in 12 - 17 working days

The model-based investigation of motions of anthropomorphic systems is an important interdisciplinary research topic involving specialists from many fields such as Robotics, Biomechanics, Physiology, Orthopedics, Psychology, Neurosciences, Sports, Computer Graphics and Applied Mathematics. This book presents a study of basic locomotion forms such as walking and running is of particular interest due to the high demand on dynamic coordination, actuator efficiency and balance control. Mathematical models and numerical simulation and optimization techniques are explained, in combination with experimental data, which can help to better understand the basic underlying mechanisms of these motions and to improve them. Example topics treated in this book are * Modeling techniques for anthropomorphic bipedal walking systems * Optimized walking motions for different objective functions * Identification of objective functions from measurements * Simulation and optimization approaches for humanoid robots * Biologically inspired control algorithms for bipedal walking * Generation and deformation of natural walking in computer graphics * Imitation of human motions on humanoids * Emotional body language during walking * Simulation of biologically inspired actuators for bipedal walking machines * Modeling and simulation techniques for the development of prostheses * Functional electrical stimulation of walking.

Lectures On Cosmology And Action-at-a-distance Electrodynamics (Hardcover): Fred Hoyle, Jayant V. Narlikar Lectures On Cosmology And Action-at-a-distance Electrodynamics (Hardcover)
Fred Hoyle, Jayant V. Narlikar
R1,578 Discovery Miles 15 780 Ships in 12 - 17 working days

This book describes the subject of electrodynamics at classical as well as quantum level, developed as an interaction at a distance. Thus it has electric charges interacting with one another directly and not through the medium of a field. In general such an interaction travels forward and backward in time symmetrically, thus apparently violating the principle of causality. It turns out, however, that in such a description the cosmological boundary conditions become very important. The theory therefore works only in a cosmology with the right boundary conditions; but when it does work it is free from the divergences that plague a quantum field theory.

Physics at the Biomolecular Interface - Fundamentals for Molecular Targeted Therapy (Hardcover, 1st ed. 2016): Ariel Fernandez Physics at the Biomolecular Interface - Fundamentals for Molecular Targeted Therapy (Hardcover, 1st ed. 2016)
Ariel Fernandez
R5,092 R3,923 Discovery Miles 39 230 Save R1,169 (23%) Ships in 12 - 17 working days

This book focuses primarily on the role of interfacial forces in understanding biological phenomena at the molecular scale. By providing a suitable statistical mechanical apparatus to handle the biomolecular interface, the book becomes uniquely positioned to address core problems in molecular biophysics. It highlights the importance of interfacial tension in delineating a solution to the protein folding problem, in unravelling the physico-chemical basis of enzyme catalysis and protein associations, and in rationally designing molecular targeted therapies. Thus grounded in fundamental science, the book develops a powerful technological platform for drug discovery, while it is set to inspire scientists at any level in their careers determined to address the major challenges in molecular biophysics. The acknowledgment of how exquisitely the structure and dynamics of proteins and their aqueous environment are related attests to the overdue recognition that biomolecular phenomena cannot be effectively understood without dealing with interfacial behaviour. There is an urge to grasp how biologically relevant behaviour is shaped by the structuring of biomolecular interfaces and how interfacial tension affects the molecular events that take place in the cell. This book squarely addresses these needs from a physicist perspective. The book may serve as a monograph for practitioners and, alternatively, as an advanced textbook. Fruitful reading requires a background in physical chemistry and some basics in biophysics. The selected problems at the end of the chapters and the progression in conceptual difficulty make it a suitable textbook for a graduate level course or an elective course for seniors majoring in chemistry, physics, biomedical engineering or related disciplines.

Cylindrical Liner Z-pinches as Drivers for Converging Strong Shock Experiments (Hardcover, 2014): Guy C. Burdiak Cylindrical Liner Z-pinches as Drivers for Converging Strong Shock Experiments (Hardcover, 2014)
Guy C. Burdiak
R3,526 Discovery Miles 35 260 Ships in 12 - 17 working days

The thesis represents the development of an entirely new experimental platform for generating and studying converging radiative shock waves. It was discovered that the application of large magnetic pressures to gas-filled cylindrical metallic tubes could sequentially produce three shocks within the gas. A comprehensive set of instrumentation was devised to explore this system in detail and an exceptionally thorough experimental and theoretical study was carried out in order to understand the source of the shock waves and their dynamics. The research is directed towards some of the most interesting topics in high energy density physics (HEDP) today, namely the interaction of HED material with radiation and magnetic fields, with broad applications to inertial confinement fusion (ICF) and laboratory plasma astrophysics. The work has already generated significant international interest in these two distinct research areas and the results could have significant importance for magnetic ICF concepts being explored at Sandia National Laboratories in the US and for our understanding of the very strong shock waves that are ubiquitous in astrophysics.

Ice Mechanics for Geophysical and Civil Engineering Applications (Hardcover, 1st ed. 2019): Ryszard Staroszczyk Ice Mechanics for Geophysical and Civil Engineering Applications (Hardcover, 1st ed. 2019)
Ryszard Staroszczyk
R3,985 Discovery Miles 39 850 Ships in 12 - 17 working days

This book presents the concepts and tools of ice mechanics, together with examples of their application in the fields of glaciology, climate research and civil engineering in cold regions. It starts with an account of the most important physical properties of sea and polar ice treated as an anisotropic polycrystalline material, and reviews relevant field observations and experimental measurements. The book focuses on theoretical descriptions of the material behaviour of ice in different stress, deformation and deformation-rate regimes on spatial scales ranging from single ice crystals, those typical in civil engineering applications, up to scales of thousands of kilometres, characteristic of large, grounded polar ice caps in Antarctica and Greenland. In addition, it offers a range of numerical formulations based on either discrete (finite-element, finite-difference and smoothed particle hydrodynamics) methods or asymptotic expansion methods, which have been used by geophysicists, theoretical glaciologists and civil engineers to simulate the behaviour of ice in a number of problems of importance to glaciology and civil engineering, and discusses the results of these simulations. The book is intended for scientists, engineers and graduate students interested in mathematical and numerical modelling of a wide variety of geophysical and civil engineering problems involving natural ice.

Physics of Lakes - Volume 1: Foundation of the Mathematical and Physical Background (Hardcover, Edition.): Kolumban Hutter,... Physics of Lakes - Volume 1: Foundation of the Mathematical and Physical Background (Hardcover, Edition.)
Kolumban Hutter, Yongqi Wang, Irina P Chubarenko
R4,681 Discovery Miles 46 810 Ships in 10 - 15 working days

This first volume in the treatise on the Physics of Lakes deals with the formulation of the mathematical and physical background. A large number of lakes on Earth are described, presenting their morphology as well as the causes of their response to the driving environment. Because the physics of lakes cannot be described without the language used in mathematics, these subjects are introduced first by using the simplest approach and with utmost care, assuming only a limited college knowledge of classical Newtonian physics, and continues with increasing complexity and elegance, starting with the fundamental equations of Lake Hydrodynamics in the form of 'primitive equations' and leading to a detailed treatment of angular momentum and vorticity. Following the presentation of these fundamentals turbulence modeling is introduced with Reynolds, Favre and other non-ergodic filters. The derivation of averaged field equations is presented with different closure schemes, including the k- model for a Boussinesq fluid and early anisotropic closure schemes. This is followed by expositions of surface gravity waves without rotation and an analysis of the role played by the distribution of mass within water bodies on the Earth, leading to a study of internal waves. The vertical structure of wind-induced currents in homogeneous and stratified waters and the Ekman theory and some of its extensions close this first volume of Physics of Lakes. The last chapter collects formulas for the phenomenological coefficients of water.

Observational Constraints on the Influence of Active Galactic Nuclei on the Evolution of Galaxies (Hardcover, 1st ed. 2016):... Observational Constraints on the Influence of Active Galactic Nuclei on the Evolution of Galaxies (Hardcover, 1st ed. 2016)
Christopher Mark Harrison
R3,591 Discovery Miles 35 910 Ships in 12 - 17 working days

This prize-winning Ph.D. thesis by Chris Harrison adopts a multi-faceted approach to address the lack of decisive observational evidence, utilising large observational data sets from several world-leading telescopes. Developing several novel observational techniques, Harrison demonstrated that energetic winds driven by Active Galactic Nuclei (AGN) are found in a large number of galaxies, with properties in agreement with model predictions. One of the key unsolved problems in astrophysics is understanding the influence of AGN, the sites of growing supermassive black holes, on the evolution of galaxies. Leading theoretical models predict that AGN drive energetic winds into galaxies, regulating the formation of stars. However, until now, we have lacked the decisive observational evidence to confirm or refute these key predictions. Careful selection of targets allowed Harrison, to reliably place these detailed observations into the context of the overall galaxy population. However, in disagreement with the model predictions, Harrison showed that AGN have little global effect on star formation in galaxies. Theoretical models are now left with the challenge of explaining these results.

Run in the Light - Exploring Exercise and Photobiomodulation in Parkinson's Disease (Hardcover): John Mitrofanis Run in the Light - Exploring Exercise and Photobiomodulation in Parkinson's Disease (Hardcover)
John Mitrofanis
R2,512 Discovery Miles 25 120 Ships in 10 - 15 working days

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. Although currently available, conventional therapies can reduce the signs of the disease, the progression of this neuronal death 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, one that 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 ( =600-1070nm) on body tissues). The two therapies are tied together in several ways. First, in animal models of Parkinson's disease, they each have been shown to offer the key feature of neuroprotection, stimulating a series of built-in protective mechanisms within the neurones, that helps their survival, to self-protect and/or self-repair. There are also some promising indications of neuroprotection and many beneficial outcomes in parkinsonian patients. Further, both exercise and light therapies are similar in that they are non-invasive and safe to use, with no known adverse side-effects, making their combination with the conventional therapies, such as dopamine replacement drug therapy and deep brain stimulation, all the more feasible. Given the heterogeneity of Parkinson's disease in humans, tackling the condition from a range of different angles - with a number of 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.

Primer on Radiation Oncology Physics - Video Tutorials with Textbook and Problems (Hardcover): Eric Ford Primer on Radiation Oncology Physics - Video Tutorials with Textbook and Problems (Hardcover)
Eric Ford
R6,898 Discovery Miles 68 980 Ships in 12 - 17 working days

Gain mastery over the fundamentals of radiation oncology physics! This package gives you over 60 tutorial videos (each 15-20 minutes in length) with a companion text, providing the most complete and effective introduction available. Dr. Ford has tested this approach in formal instruction for years with outstanding results. The text includes extensive problem sets for each chapter. The videos include embedded quizzes and "whiteboard" screen technology to facilitate comprehension. Together, this provides a valuable learning tool both for training purposes and as a refresher for those in practice. Key Features A complete learning package for radiation oncology physics, including a full series of video tutorials with an associated textbook companion website Clearly drawn, simple illustrations throughout the videos and text Embedded quiz feature in the video tutorials for testing comprehension while viewing Each chapter includes problem sets (solutions available to educators)

High-Energy Aspects of Solar Flares (Hardcover, 2012): A. Gordon Emslie, Brian R. Dennis, Robert P. Lin, Hugh Hudson High-Energy Aspects of Solar Flares (Hardcover, 2012)
A. Gordon Emslie, Brian R. Dennis, Robert P. Lin, Hugh Hudson
R5,057 Discovery Miles 50 570 Ships in 12 - 17 working days

This edited volume describes many aspects of current research on solar flares, emphasizing recent progress in understanding their X-ray and gamma-ray emissions. Several of the chapters deal comprehensively with the problems of particle acceleration, conversion of particle energy into various forms of radiation, and the inference of physical processes from observations. Other chapters deal with the full breadth and richness of flare observations, including microflares and nanoflares.
This volume is aimed at graduate students and researchers in solar physics and space science.
Previously published in Space Science Reviews journal, Vol. 159/1-4, 2011.

Potential Theory in Applied Geophysics (Hardcover, 2008 ed.): Kalyan Kumar Roy Potential Theory in Applied Geophysics (Hardcover, 2008 ed.)
Kalyan Kumar Roy
R7,275 Discovery Miles 72 750 Ships in 12 - 17 working days

"Potential Theory in Applied Geophysics" introduces the principles of gravitational, magnetic, electrostatic, direct current electrical and electromagnetic fields, with detailed solutions of Laplace and electromagnetic wave equations by the method of separation of variables. Behaviour of the scalar and vector potential and the nature of the solutions of these boundary value problems are shown along with the use of complex variables and conformal transformation, Green's theorem, Green's functions and its use in integral equation. Finite element and finite difference methods for two-dimensional potential problems are discussed in considerable detail. The analytical continuation of the potential field and inverse theory, used for the interpretation of potential field data, are also demonstrated.

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