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Showing 60,851 through 60,875 of 79,877 results

PVC: Production, Properties and Uses

by G. Mathews

A study on the production, properties and uses, of PVC, Polyvinyl chloride which is the world's third-most widely produced synthetic plastic polymer by the Institute of Materials, London in 1996

Pvp: A Critical Review of the Kinetics and Toxicology of Polyvinylpyrrolidone (Povidone)

by Wolfgang Schwarz

Polyvinylpyrrolidone is widely used in medicine, pharmaceuticals, cosmetics, foods, printing inks, textiles, and many more diverse applications. This book describes the 50 years of research, published and unpublished, on the absorption, distribution, storage, and excretion of PVP. The toxicology of PVP is critically evaluated. The author's involvement in the recent reevaluation of PVP by the Joint Expert Committee on Food Additives of the World Health Organization (WHO) and the Food and Agriculture Organization (FOA) led them to undertake this comprehensive review of all the information on the subject. This book will be invaluable for anyone who is involved with polyvinylpyrrolidone. Included is a broad review of the toxicological studies performed on PVP, including acute, subchronic, chronic, reproductive, mutagenicity, and carcinogenicity studies. There is also an appendix listing the key studies, with references, on the absorption, renal elimination, distribution, acute toxicity, subchronic toxicity, chronic toxicity, teratogenicity, mutagenicity, and carcinogenicity of PVP.

Pyrethroid Insecticides (The Handbook of Environmental Chemistry #92)

by Ethel Eljarrat

This book reviews the latest developments concerning the analysis, fate, behaviour and toxicity of pyrethroid insecticides. Over the last few decades, pyrethroid insecticides have increasingly replaced organochlorine pesticides due to their relatively lower mammalian toxicity, selective insecticide activity and lower environmental persistence. They represent 25% of global sales of insecticides, and are considered to be “safe” since they are converted to non-toxic metabolites by oxidative metabolism in fish and by hydrolysis in mammals. However, recent studies have demonstrated their environmental ubiquity, their bioaccumulation and their toxicity in various aquatic and terrestrial organisms, and even in humans. Featuring contributions by leading experts, the book discusses the physico-chemical properties and uses of pyrethroid insecticides; the latest chemical analytical methods; their occurrence in the environment, biota and food; and their isomeric and enantiomeric behaviour. It particularly highlights the toxicological effects and human exposure to pyrethroid insecticides, and also offers insights into the effects of the salmon industry on the marine environment with a case study of sea lice treatment using pyrethroids. This comprehensive book is a valuable source of information for environmental scientists, policymakers and producers interested in issues related to pyrethroid insecticides.

Pyrethroids

by Tatsuya Mori Noritada Matsuo

Progress and Future of Pyrethroids, by Yoshio Katsuda Pyrethrin Biosynthesis and Its Regulation in Chrysanthemum cinerariaefolium, by Kazuhiko Matsuda Recent Advances of Pyrethroids for Household Use, by Kazuya Ujihara, Tatsuya Mori and Noritada Matsuo The Biological Activity of a Novel Pyrethroid: Metofluthrin, by Masayo Sugano and Takao Ishiwatari Advances in the Mode of Action of Pyrethroids, J. Marshall Clark and Steven B. Symington Mammal Toxicology of Synthetic Pyrethroids, by Ryozo Tsuji, Tomoya Yamada and Satoshi Kawamura Biotransformation and Enzymatic Reactions of Synthetic Pyrethroids in Mammals, by Kazuki Mikata, Naohiko Isobe and Hideo Kaneko Environmental Behavior of Synthetic Pyrethroids, by Toshiyuki Katagi Ecotoxicology of Synthetic Pyrethroids, by S. J. Maund, P. J. Campbell, J. M. Giddings, M. J. Hamer, K. Henry, E. D. Pilling, J. S. Warinton and J. R. Wheeler

Pyrite Oxidation and Its Control

by V. P. Evangelou

Pyrite Oxidation and its Control is the single available text on the market that presents the latest findings on pyrite oxidation and acid mine drainage (AMD). This new information is an indispensable reference for generating new concepts and technologies for controlling pyrite oxidation.This book focuses on pyrite oxidation theory, experimental findings on oxidation mechanisms, as well as applications and limitations of amelioration technologies. The text also includes discussions on the theory and potential application of novel pyrite microencapsulation technologies for controlling pyrite oxidation currently under investigation in the author's laboratory.

The Pyrocene: How We Created an Age of Fire, and What Happens Next

by Stephen J. Pyne

A dramatic reorientation of humanity’s relationship with fireThe Pyrocene tells the story of what happened when a fire-wielding species, humanity, met an especially fire-receptive time in Earth's history. Since terrestrial life first appeared, flames have flourished. Over the past two million years, however, one genus gained the ability to manipulate fire, swiftly remaking both itself and eventually the world. We developed small guts and big heads by cooking food; we climbed the food chain by cooking landscapes; and now we have become a geologic force by cooking the planet. Some fire uses have been direct: fire applied to convert living landscapes into hunting grounds, forage fields, farms, and pastures. Others have been indirect, through pyrotechnologies that expanded humanity's reach beyond flame's grasp. Still, preindustrial and Indigenous societies largely operated within broad ecological constraints that determined how, and when, living landscapes could be burned. These ancient relationships between humans and fire broke down when people began to burn fossil biomass—lithic landscapes—and humanity’s firepower became unbounded. Fire-catalyzed climate change globalized the impacts into a new geologic epoch. The Pleistocene yielded to the Pyrocene. Around fires, across millennia, we have told stories that explained the world and negotiated our place within it. The Pyrocene continues that tradition, describing how we have remade the Earth and how we might recover our responsibilities as keepers of the planetary flame.

Pyrochlore Oxides: Structure, Properties, and Potential in Photocatalytic Applications (Green Chemistry and Sustainable Technology)

by Diana G. Fukina Artem S. Belousov Evgeny V. Suleimanov

This book presents an in-depth exploration of complex metal oxides, focusing on their applications in photocatalysis and biomedical materials. It highlights the practical importance of complex metal oxides, which have gained significant attention in recent years due to their diverse range of properties. The book specifically delves into the most representative series of compounds based on stable structural types of minerals, such as perovskite, fluorite, pyrochlore, corundum, and rutile. It also emphasizes the scientific interest in the pyrochlore mineral structure, which has been shown to exhibit photocatalytic activity.Recent studies have revealed that some compounds with the pyrochlore structure can act as promising candidates for photocatalysis. Additionally, the book highlights the use of photocatalysis in producing biomedical materials based on natural polymers. These materials possess a unique combination of components assembled in a specific structure, which makes them highly attractive for regenerative medicine associated with cell/tissue regeneration stimulation. Overall, this book offers a comprehensive analysis of the potential of complex metal oxides, particularly those with the pyrochlore structure, and is particularly useful for those researchers working in the fields of green chemistry and biomedical materials science.

Pyroelectric Materials: Physics and Applications

by Ashim Kumar Bain Prem Chand

Pyroelectric Materials An authoritative and practical discussion of pyroelectric materials and their applications In Pyroelectric Materials: Physics and Applications, the authors deliver a comprehensive exploration of the physics of pyroelectric materials and their applications. With authoritative coverage of a wide variety of critical topics in the field, the authors provide the readers with chapters on dielectric fundamentals, pyroelectricity, pyroelectric materials and their applications such as pyroelectric infrared detectors, pyroelectric energy harvesting, and pyroelectric fusion. Readers will also find: A thorough introduction to the fundamentals of dielectrics, including discussions of polarization, dispersion, relaxation, and the molecular theory of induced charges in a dielectric Comprehensive explorations of pyroelectricity, including its history, theory, and a simple model of pyroelectric effect Perfect for researchers and professionals with an interest in pyroelectric materials, the book is also useful for graduate students taking courses involving pyroelectric materials and their applications.

Pyrometrie und Thermografie: Leitfaden für die Praxis

by Gerald Gerlach Helmut Budzier

Pyrometrie und Thermografie Die Thermografie ist ein bildgebendes Verfahren, um Oberflächentemperaturen von Objekten anzuzeigen. Dies erfolgt, indem man die Intensität der Infrarotstrahlung, die von einem bestimmten Punkt ausgeht, misst und daraus die dort herrschende Temperatur berechnet. Als Messgeräte dazu werden Thermografie-Kameras verwendet. Wird die Temperatur nur an einem Punkt gemessen, spricht man von Pyrometrie, die entsprechenden Geräte werden als Pyrometer bezeichnet. Die berührungslose Temperaturmessung ist überall dort von großem Interesse, wo hohe Temperaturen auftreten, harsche Bedingungen herrschen oder der Messort nicht erreicht werden kann. Das ist zum Beispiel in der Prozessmesstechnik, in Gießereien und Stahlwerken oder der Überwachung von brandanfälligen Umgebungen (Wälder, Müllplätze) der Fall. Das Buch wendet sich an alle, die Pyrometer und Thermografie-Kameras nutzen und typischerweise mit den zu überwachenden Prozessen vertraut sind, aber oft nicht mit der einzusetzenden Messtechnik. Deshalb fokussiert es auf die Anwendung von Pyrometern und Thermografie-Kameras und macht auf übersichtliche Weise mit den Grundlagen, den Fehlereinflüssen, den Grenzen hinsichtlich der thermischen, zeitlichen und räumlichen Auflösung und der erreichbaren Messgenauigkeit vertraut.

Pyroptosis: Methods and Protocols (Methods in Molecular Biology #2641)

by Susan L. Fink

This volume explores techniques used to study and understand the latest research on pyroptosis. The chapters in this book cover topics such as experimental methods to induce pyroptosis via inflammasomes; approaches to identifying inflammasome activation in humans; ways to induce and detect pore formation; and techniques to evaluate cellular outcomes of pyroptotic cell death. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls.Cutting-edge and thorough, Pyroptosis: Methods and Protocols is a valuable tool for researchers who want to expand their knowledge of this developing field. It will be especially beneficial for those working in the fields of immunology, cancer biology, microbiology, and cell biology.

Pyrosequencing

by Ulrich Lehmann Jörg Tost

The primary purpose of this volume is to demonstrate the range of applications of the Pyrosequencing technology in research and diagnostics and to provide detailed protocols. Beginning with an up-to-date overview of the biochemistry, the volume continues with quantitative analysis of genetic variation, ratio of expressed alleles at the RNA level, analysis of DNA methylation, global DNA methylation assays, specialized applications for DNA methylation analysis including loss of imprinting, single blastocyst analysis, allele-specific DNA methylation patterns, DNA methylation patterns associated with specific histone modifications. The volume further details tools and protocols for the detection of viruses and bacteria, and genetic and epigenetic analyses for forensics using Pyrosequencing. As a volume in the highly successful Methods in Molecular Biology series, chapters contain introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols and tips on troubleshooting and avoiding known pitfalls. Comprehensive and adaptable, Pyrosequencing: Methods and Protocols, Second Edition will greatly aid doctorial students, postdoctoral investigators and research scientists studying different aspects of genetics and cellular and molecular biology.

Pyrrhic Progress: The History of Antibiotics in Anglo-American Food Production (Critical Issues in Health and Medicine)

by Claas Kirchhelle

Pyrrhic Progress analyses over half a century of antibiotic use, regulation, and resistance in US and British food production. Mass-introduced after 1945, antibiotics helped revolutionize post-war agriculture. Food producers used antibiotics to prevent and treat disease, protect plants, preserve food, and promote animals’ growth. Many soon became dependent on routine antibiotic use to sustain and increase production. The resulting growth of antibiotic infrastructures came at a price. Critics blamed antibiotics for leaving dangerous residues in food, enabling bad animal welfare, and selecting for antimicrobial resistance (AMR) in bacteria, which could no longer be treated with antibiotics. Pyrrhic Progress reconstructs the complicated negotiations that accompanied this process of risk prioritization between consumers, farmers, and regulators on both sides of the Atlantic. Unsurprisingly, solutions differed: while Europeans implemented precautionary antibiotic restrictions to curb AMR, consumer concerns and cost-benefit assessments made US regulators focus on curbing drug residues in food. The result was a growing divergence of antibiotic stewardship and a rise of AMR. Kirchhelle’s comprehensive analysis of evolving non-human antibiotic use and the historical complexities of antibiotic stewardship provides important insights for current debates on the global burden of AMR.

Pyruvate Carboxylase

by Keech

This book is a welcome source of information on this enzyme which is vitally important to many forms of life. Each chapter or section of each volume is not written primarily for those specializing in that narrow area, but rather to provide a coherent and integrated summary of that aspect got those working on other, quite different facets of the same enzyme.

Pythium: Diagnosis, Diseases and Management

by Mahendra Rai Avinash P. Ingle Kamel A. Abd-Elsalam

Pythium is one of the most important phytopathogens causing significant damage to agriculture, forest, and nurseries, etc. It is an unseen enemy of the root zone of various plants and hence considered as "hidden terror" for a number of plants. An accurate diagnosis and identification of Pythium causing various infections in plants is very important because it is often confused with several other fungi. Pythium infections are difficult to control once they have set in. Therefore, its effective and ecofriendly management is of paramount importance. In addition, there are many reports on Pythium causing infections in human beings and animals. The present book on Pythium focuses on various aspects which mainly include pathogenesis, technological developments in detection and diagnosis, and its management. Key Features Includes identification of Pythium spp. by traditional and molecular methods Deals with different diseases caused by Pythium spp Describes the role of Pythium in mammalian diseases Incorporates various management strategies Discusses emerging role of nanotechnological tools for the management of Pythium diseases

Python Data Science Handbook: Essential Tools For Working With Data

by Jake VanderPlas

Python is a first-class tool for many researchers, primarily because of its libraries for storing, manipulating, and gaining insight from data. Several resources exist for individual pieces of this data science stack, but only with the new edition of Python Data Science Handbook do you get them all--IPython, NumPy, pandas, Matplotlib, scikit-learn, and other related tools.Working scientists and data crunchers familiar with reading and writing Python code will find the second edition of this comprehensive desk reference ideal for tackling day-to-day issues: manipulating, transforming, and cleaning data; visualizing different types of data; and using data to build statistical or machine learning models. Quite simply, this is the must-have reference for scientific computing in Python.With this handbook, you'll learn how:IPython and Jupyter provide computational environments for scientists using PythonNumPy includes the ndarray for efficient storage and manipulation of dense data arraysPandas contains the DataFrame for efficient storage and manipulation of labeled/columnar dataMatplotlib includes capabilities for a flexible range of data visualizationsScikit-learn helps you build efficient and clean Python implementations of the most important and established machine learning algorithms

Python for Bioinformatics (Chapman & Hall/CRC Mathematical and Computational Biology)

by Sebastian Bassi

In today's data driven biology, programming knowledge is essential in turning ideas into testable hypothesis. Based on the author’s extensive experience, Python for Bioinformatics, Second Edition helps biologists get to grips with the basics of software development. Requiring no prior knowledge of programming-related concepts, the book focuses on the easy-to-use, yet powerful, Python computer language. This new edition is updated throughout to Python 3 and is designed not just to help scientists master the basics, but to do more in less time and in a reproducible way. New developments added in this edition include NoSQL databases, the Anaconda Python distribution, graphical libraries like Bokeh, and the use of Github for collaborative development.

Python for Scientists

by John M. Stewart

Python is a free, open source, easy-to-use software tool that offers a significant alternative to proprietary packages such as MATLAB and Mathematica. This book covers everything the working scientist needs to know to start using Python effectively. The author explains scientific Python from scratch, showing how easy it is to implement and test non-trivial mathematical algorithms and guiding the reader through the many freely available add-on modules. A range of examples, relevant to many different fields, illustrate the program's capabilities. In particular, readers are shown how to use pre-existing legacy code (usually in Fortran77) within the Python environment, thus avoiding the need to master the original code. Instead of exercises the book contains useful snippets of tested code which the reader can adapt to handle problems in their own field, allowing students and researchers with little computer expertise to get up and running as soon as possible.

Python for Scientists

by John M. Stewart

Python is a free, open source, easy-to-use software tool that offers a significant alternative to proprietary packages such as MATLAB and Mathematica. This book covers everything the working scientist needs to know to start using Python effectively. The author explains scientific Python from scratch, showing how easy it is to implement and test non-trivial mathematical algorithms and guiding the reader through the many freely available add-on modules. A range of examples, relevant to many different fields, illustrate the program's capabilities. In particular, readers are shown how to use pre-existing legacy code (usually in Fortran77) within the Python environment, thus avoiding the need to master the original code. Instead of exercises the book contains useful snippets of tested code which the reader can adapt to handle problems in their own field, allowing students and researchers with little computer expertise to get up and running as soon as possible.

Python Parts

by Amy Tao

Slither into the scaly world of the mighty python! Learn about all the parts that make the python such a strange and misunderstood creature. See how its anatomy allows it to be more than just a limbless tube-like animal! Gain knowledge about this reptile’s habits and senses.

Python Programming for Biology

by Tim J. Stevens Wayne Boucher

Do you have a biological question that could be readily answered by computational techniques, but little experience in programming? Do you want to learn more about the core techniques used in computational biology and bioinformatics? Written in an accessible style, this guide provides a foundation for both newcomers to computer programming and those interested in learning more about computational biology. The chapters guide the reader through: a complete beginners' course to programming in Python, with an introduction to computing jargon; descriptions of core bioinformatics methods with working Python examples; scientific computing techniques, including image analysis, statistics and machine learning. This book also functions as a language reference written in straightforward English, covering the most common Python language elements and a glossary of computing and biological terms. This title will teach undergraduates, postgraduates and professionals working in the life sciences how to program with Python, a powerful, flexible and easy-to-use language.

A Q&A Approach to Organic Chemistry

by Michael B. Smith

A Q&A Approach to Organic Chemistry is a book of leading questions that begins with atomic orbitals and bonding. All critical topics are covered, including bonding, nomenclature, stereochemistry, conformations, acids and bases, oxidations, reductions, substitution, elimination, acyl addition, acyl substitution, enolate anion reactions, the Diels–Alder reaction and sigmatropic rearrangements, aromatic chemistry, spectroscopy, amino acids and proteins, and carbohydrates and nucleosides. All major reactions are covered. Each chapter includes end-of-chapter homework questions with the answer keys in an Appendix at the end of the book. This book is envisioned to be a supplementary guide to be used with virtually any available undergraduate organic chemistry textbook. This book allows for a "self-guided" approach that is useful as one studies for a coursework exam or as one reviews organic chemistry for postgraduate exams. Key Features: Allows a "self-guided tour" of organic chemistry Discusses all important areas and fundamental reactions of organic chemistry Classroom tested Useful as a study guide that will supplement most organic chemistry textbooks Assists one in study for coursework exams or allows one to review organic chemistry for postgraduate exams Includes 21 chapters of leading questions that covers all major topics and major reactions of organic chemistry

Q Fever, Volume I: The Disease

by Thomas J. Marrie

This fascinating book describes the history, and epidemiology in both man and animals, and clinical features of this zoonosis. It reveals detailed information pertaining to the basic science aspects of the interaction of Coxiella burnetii, the etiologic agent of Q (Query) fever, with the host and the immune response of the host to this unique pathogen. This one-of-a-kind work uses the rules of epidemiological evidence to determine whether or not Coxiella burnetii is a perinatal pathogen for man. This interesting, easy-to-understand text concludes with chapters dealing with the antibiotic susceptibility of Coxiella burnetii and the studies that resulted in a vaccine that now can be used to prevent this infection. This volume is an absolute must for all microbiologists, respirologists, infectious disease physicians and veterinarians.

q-RASAR: A Path to Predictive Cheminformatics (SpringerBriefs in Molecular Science)

by Kunal Roy Arkaprava Banerjee

This brief offers an introduction to the fascinating new field of quantitative read-across structure-activity relationships (q-RASAR) as a cheminformatics modeling approach in the background of quantitative structure-activity relationships (QSAR) and read-across (RA) as data gap-filling methods. It discusses the genesis and model development of q-RASAR models demonstrating practical examples. It also showcases successful case studies on the application of q-RASAR modeling in medicinal chemistry, predictive toxicology, and materials sciences. The book also includes the tools used for q-RASAR model development for new users. It is a valuable resource for researchers and students interested in grasping the development algorithm of q-RASAR models and their application within specific research domains.

QBism

by Hans Christian von Baeyer

Short for Quantum Bayesianism, QBism adapts conventional features of quantum mechanics in light of a revised understanding of probability. Using commonsense language, without the equations or weirdness of conventional quantum theory, Hans Christian von Baeyer clarifies the meaning of quantum mechanics and suggests a new approach to general physics.

QCD Higher-Order Effects and Search for New Physics

by Jian Wang

This book mainly investigates the precision predictions on the signal of new physics at the Large Hadron Collider (LHC) in the perturbative Quantum Chromodynamics (QCD) scheme. The potential of the LHC to discover the signal of dark matter associated production with a photon is studied after including next-to-leading order QCD corrections. The factorization and resummation of t-channel top quark transverse momentum distribution in the standard model at both the Tevatron and the LHC with soft-collinear effective theory are presented. The potential of the early LHC to discover the signal of monotops is discussed. These examples illustrate the method of searching for new physics beyond what is known today with high precision.

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Showing 60,851 through 60,875 of 79,877 results