Author: Takashi Nakamura,Lawrence Heilbronn
Publisher: World Scientific
View: 6179This handbook is a timely resource for the rapidly growing field of heavy-ion transport-model theory and its applications to the fields of accelerator development, heavy-ion radiotherapy, and shielding of accelerators and in space. Data from over 20 years of experiments in the production of secondary neutrons and spallation products are contained in the handbook, and are available on the accompanying CD. Transport modelers and experimentalists will find the detailed descriptions of the experiments and subsequent analyses to be a valuable aid in utilizing the data for their particular applications.
Author: Thomas D. Gillespie
Publisher: Transportation Research Board
Category: Highway engineering
Author: Mohammad Athar,S. B. Vohora
Publisher: New Age International
Category: Heavy metals
View: 737Metals And Metalloids Are Ubiquitous Environmental Constituents And Cannot Be Broken Down To Non-Toxic Forms By The Biological System. Once The Ecosystem Is Contaminated With Them, They Remain As A Potential Hazard To Human Health For Many Years. Heavy Metals Are Particularly Important In This Respect. This Book, Which Is A Part Of Man And Environment Series, Discusses Diverse Issues Relating To Heavy Metals And Environmental And Human Health Problems.
Author: Gaspar Banfalvi
Publisher: Springer Science & Business Media
View: 7354The term “heavy metals” is used as a group name of toxic metals and metalloids (semimetals) causing contaminations and ecotoxicity. In strict chemical sense the density of heavy metals is higher than 5 g/cm3. From biological point of view as microelements they can be divided into two major groups. a. For their physiological function organisms and cells require essential microelements such as iron, chromium (III), cobalt, copper, manganese, molidenium, zinc. b. The other group of heavy metals is toxic to the health or environment. Of highest concern are the emissions of As, Cd, Co, Cu, Hg, Mn, Ni, Pb, Sn, Tl. The toxicity of heavy metals is well known at organizational level, while less attention has been paid to their cellular effects. This book describes the toxicity of heavy metals on microorganisms, yeast, plant and animal cells. Other chapters of the book deal with their genotoxic, mutagenic and carcinogenic effects. The toxicity of several metals touch upon the aspects of environmental hazard, ecosystems and human health. Among the cellular responses of heavy metals irregularities in cellular mechanisms such as gene expression, protein folding, stress signaling pathways are among the most important ones. The final chapters deal with biosensors and removal of heavy metals. As everybody is eating, drinking and exposed to heavy metals on a daily basis, the spirit of the book will attract a wide audience.
Author: H. Magdi Selim
Publisher: CRC Press
View: 6715Concerns regarding heavy metal contamination in terrestrial ecosystems have prompted increasing efforts on limiting their bioavailability in the root zone. The complexity of the hydrologic system gives rise to the need for understanding the fate and transport of trace elements in the soil-water-plant environment. Dynamics and Bioavailability of Heavy Metals in the Rootzone provides a multidisciplinary approach with emphasis on geohydrology, plant and soil science, and environmental chemistry. The primary focus of this book is on different approaches that describe the dynamics of heavy metals in the soil system. These approaches are key to providing direct information on the concentration of heavy metals and hence on their transport, toxicity, and bioavailability. The book includes chapters covering equilibrium and kinetic models of heavy metal interactions as well as non-equilibrium transport models. It also discusses chemical processes controlling soil solution concentrations and modeling of heavy metals adsorption. Addressing the biological component of heavy metal dynamics, this work examines rhizosphere microorganisms and phytoremediation. Colloid-associated transport, which can result in groundwater contamination, is discussed in relation to reclaimed mine sites. The authors also present an overview of recent advancements in the biogeochemistry of trace elements and their environmental implications. Additional chapters include examination of various natural environments including runoff waters at the watershed scale, heavy metal transformation in wetlands, dynamics of trace metals in frequently flooded soils, and effects on crops in biosolid-amended soils. Reliable assessment of potential risks resulting from the transport of trace elements in the soil environment requires the examination of complex chemical and biological interactions due to the heterogeneous nature of soils. This text describes the current state of the art in this field and explores innovative experimental and theoretical/modeling approaches that will enhance this knowledge. The book provides a coherent presentation of recent advances in techniques, modeling, and dynamics and bioavailability of heavy metals in the root zone.
Author: A J Buras,M Lindner
Publisher: World Scientific
View: 850This volume is a collection of review articles on the most outstanding topics in heavy flavour physics. All the authors have made significant contributions to this field. The book reviews in detail the theoretical structure of heavy flavour physics and confronts the Standard Model and some of its extensions with existing experimental data. This new edition covers new trends and ideas and includes the latest experimental information. Compared to the previous edition interesting new activities are included and some of the key contributions are updated. Particular attention is paid to the discovery of the top quark and the determination of its mass. Contents: Electroweak Radiation Corrections After the Top Quark Discovery (W Hollik)Quark Mixing, CP Violation and Rare Decays After the Top Quark Discovery (A J Buras & R Fleischer)B Decays and the Heavy-Quark Expansion (M Neubert)Non-leptonic Weak Decays of B Mesons (M Neubert & B Stech)QCD Sum Rules for Exclusive Decays of Heavy Mesons (A Khodjamirian & R Rückl)Heavy Quark Physics from Lattice QCD (J M Flynn & C T Sachrajda)Tau Physics (A Pich)Heavy Flavors in High Energy Electron–Positron Collisions (J H Kühn & P M Zerwas)Heavy-Quark Production (S Frixione et al.)Dynamical Electro-weak Symmetry Breaking with a Standard Model Limit (M Lindner & E Schnapka)C P Violation Beyond the Standard Model (Y Grossman et al.)Supersymmetry and FCNC Effects (M Misiak et al.)and other papers Readership: Elementary particle physicists. keywords:
Author: Kiese Laymon
Publisher: Bloomsbury Publishing
Category: Social Science
View: 5848'So beautifully written, so insightful, so thoughtful, so honest, so vulnerable, so intimate ... A gift' JESMYN WARD 'Wow. Just wow' ROXANE GAY 'Unflinchingly honest' RENI EDDO-LODGE 'An act of truth-telling unlike any other I can think of' ALEXANDER CHEE A TLS BOOK OF THE YEAR The story of the black male experience in America you've never read before Kiese Laymon grew up a hard-headed black son to a complicated and brilliant black mother in Jackson, Mississippi. From his early experiences of sexual violence, to his suspension from college, to his career as a young college professor, Laymon charts his complex relationship with his mother, grandmother, abuse, anorexia, obesity, sex, writing and ultimately gambling. In Heavy, by attempting to name secrets and lies that he and his mother spent a lifetime avoiding, Laymon asks himself, his mother, his nation and us to confront the terrifying possibility that few know how to love responsibly, and even fewer want to live under the weight of actually becoming free. A defiant yet vulnerable memoir that Laymon started writing when he was eleven, Heavy is an insightful exploration of weight, identity, art, friendship and family.
Author: Hosam El-Din M. Saleh,Refaat Aglan
Publisher: BoD – Books on Demand
Category: Technology & Engineering
View: 7141Fundamental societal changes resulted from the necessity of people to get organized in mining, transporting, processing, and circulating the heavy metals and their follow-up products, which in consequence resulted in a differentiation of society into diversified professions and even societal strata. Heavy metals are highly demanded technological materials, which drive welfare and progress of the human society, and often play essential metabolic roles. However, their eminent toxicity challenges the field of chemistry, physics, engineering, cleaner production, electronics, metabolomics, botany, biotechnology, and microbiology in an interdisciplinary and cross-sectorial manner. Today, all these scientific disciplines are called to dedicate their efforts in a synergistic way to avoid exposure of heavy metals into the eco- and biosphere, to reliably monitor and quantify heavy metal contamination, and to foster the development of novel strategies to remediate damage caused by heavy metals.
Author: P. A. Krenkel
View: 8052Heavy Metals in the Aquatic Environment contains the proceedings of an international conference held in Nashville, Tennessee in December 1973. This conference is co-sponsored by the International Association on Water Pollution Research, the Sport Fishing Institute, the American Fishing Tackle Manufacturers Association, and Vanderbilt University's Department of Environmental and Water Resources Engineering. Contributors focus on the hazards posed by heavy metals present in the aquatic environment and how to control them. This text consists of 45 chapters divided into eight sections. This book assesses the environmental impact of heavy metals found in the aquatic environment; the economic impact of removing them from waste effluents; and the costs vs. benefits attained by their removal. The social costs are also evaluated. After an introduction to dose-response relationships resulting from human exposure to methylmercury compounds, the discussion turns to the toxicity of cadmium in relation to itai-itai disease; the effects of heavy metals on fish and aquatic organisms; and the analytical methods used for measuring concentrations of methylmercury and other heavy metals. The next sections explore the transport, distribution, and removal of heavy metals, along with regulations, standards, surveillance, and monitoring aimed at addressing the problem. This book will be of interest to planners and policymakers involved in water pollution control.