Download or read book A Science of Impurity written by Christopher Hamlin and published by Univ of California Press. This book was released on 1990-01-01 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Science of Impurity written by C Hamlin and published by CRC Press. This book was released on 1990-01-01 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Science of Impurity is the first detailed history of the mobilization of chemistry (and later bacteriology) to meet the public demand for good water. It also offers a perspective on understanding how modern physical sciences are tapped to ensure public good. A Science of Impurity explores the social framework in which chemists came to work on problems of water quality, the strategies they used to study the environment, their conclusions and their role in dealing with a fearful public. For historians of science, researchers and planners in the water industry.
Download or read book Measuring Elemental Impurities in Pharmaceuticals written by Robert Thomas and published by CRC Press. This book was released on 2018-01-29 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent regulations on heavy metal testing have required the pharmaceutical industry to monitor a suite of elemental impurities in pharmaceutical raw materials, drug products and dietary supplements. These new directives s are described in the new United States Pharmacopeia (USP) Chapters , , and , together with Q3D, Step 4 guidelines for elemental impurities, drafted by the ICH (International Conference on Harmonization of Technical Requirements for Registration of Pharmaceuticals for Human Use), a consortium of global pharmaceutical associations, including the European Pharmacopeia (Ph.Eur.), the Japanese Pharmacopeia (JP) and the USP. This book provides a complete guide to the analytical methodology, instrumental techniques and sample preparation procedures used for measuring elemental impurities in pharmaceutical and nutraceutical materials. It offers readers the tools to better understand plasma spectrochemistry to optimize detection capability for the full suite of elemental PDE (Permitted Daily Exposure) levels in the various drug delivery categories. Other relevant information covered in the book includes: The complete guide to measuring elemental impurities in pharmaceutical and nutraceutical materials. Covers heavy metals testing in the pharmaceutical industry from an historical perspective. Gives an overview of current USP Chapters and and ICH Q3D Step 4 Guidelines. Explains the purpose of validation protocols used in Chapter , including how J-values are calculated Describes fundamental principles and practical capabilities of ICP-MS and ICP-OES. Offers guidelines about the optimum strategy for risk assessment Provides tips on how best to prepare and present your data for regulatory inspection. An indispensable resource, the fundamental principles and practical benefits of ICP-OES and ICP-MS are covered in a reader-friendly format that a novice, who is carrying out elemental impurities testing in the pharmaceutical and nutraceutical communities, will find easy to understand.
Download or read book Self diffusion and Impurity Diffusion in Pure Metals written by Gerhard Neumann and published by Elsevier. This book was released on 2011-08-19 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diffusion in metals is an important phenomenon, which has many applications, for example in all kinds of steel and aluminum production, and in alloy formation (technical applications e.g. in superconductivity and semiconductor science). In this book the data on diffusion in metals are shown, both in graphs and in equations. Reliable data on diffusion in metals are required by researchers who try to make sense of results from all kinds of metallurgical experiments, and they are equally needed by theorists and computer modelers. The previous compilation dates from 1990, and measurements relying on the electron microprobe and the recent Rutherford backscattering technique were hardly taken into account there. This reference book, containing all results on self-diffusion and impurity diffusion in pure metals with an indication of their reliability, will be useful to everyone in this field for the theory, fundamental research and industrial applications covered. • Up-to-date and complete (including EPMA and RBS investigations) • Indication of reliability of the measurements • Reassessment of many early results • Data can easily be extracted from Tables and Graphs
Download or read book Chemistry written by Bernadette Bensaude-Vincent and published by World Scientific. This book was released on 2012 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces the central issues in the philosophy of chemistry. Mobilizing the theme of impurity, this book explores the tradition of chemistry's negative image. It argues for the positive philosophical value of chemistry, reflecting its characteristic practical engagement with the material world.
Download or read book Impurity of Blood written by Joshua Goode and published by LSU Press. This book was released on 2009-12 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although Francisco Franco courted the Nazis as allies during the Spanish Civil War in the late 1930s, the Spanish dictator's racial ideals had little to do with the kind of pure lineage that obsessed the Nazis. Indeed, Franco's idea of race -- that of a National Catholic state as the happy meeting grounds of many different peoples willingly blended together -- differed from most European conceptions of race in this period and had its roots in earlier views of Spanish racial identity from the late nineteenth and early twentieth centuries. In Impurity of Blood, Joshua Goode traces the development of racial theories in Spain from 1870 to 1930 in the burgeoning human science of anthropology and in political and social debates, exploring the counterintuitive Spanish proposition that racial mixture rather than racial purity was the bulwark of national strength. Goode begins with a history of ethnic thought in Spain in the medieval and early modern era, and then details the formation of racial thought in Spain's nascent human sciences. He goes on to explore the political, social, and cultural manifestations of racial thought at the dawn of the Franco regime and, finally, discusses its ramifications in Francoist Spain and post--World War II Europe. In the process, he brings together normally segregated historiographies of race in Europe. Goode analyzes the findings of Spanish racial theorists working to forge a Spanish racial identity in the late nineteenth and early twentieth centuries, when race and racial sciences were most in vogue across Europe. Spaniards devised their own racial identities using scientifically substantiated racial ideas and confronted head-on the apparent limitations of Spain's history by considering them as the defining characteristics of la raza española. The task of the Spanish social sciences was to trace the history of racial fusion: to study both the separate elements of the Spanish composition and the factors that had nurtured them. Ultimately, by exploring the development of Spanish racial thought between 1870 and 1930, Goode demonstrates that national identity based on mixture -- the inclusion rather than the exclusion of different peoples -- did not preclude the establishment of finely wrought and politically charged racial hierarchies. Providing a new comprehensive view of racial thought in Spain and its connections to the larger twentieth-century formation of racial thought in the West, Impurity of Blood will enlighten and inform scholars of Spanish and European history, racial theory, historical anthropology, and the history of science.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Impurities in Silicon Device Fabrication written by Klaus Graff and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion of the different mechanisms responsible for contamination together with a survey of their impact on device performance. The author examines the specific properties of main and rare impurities in silicon, as well as the detection methods and requirements in modern technology. Finally, impurity gettering is studied along with modern techniques to determine gettering efficiency. Throughout all of these subjects, the book presents only reliable and up-to-date data so as to provide a thorough review of recent scientific investigations.
Download or read book Handbook of Isolation and Characterization of Impurities in Pharmaceuticals written by Satinder Ahuja and published by Elsevier. This book was released on 2003-06-26 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Food and Drug Administration (FDA) and other regulatory bodies around the world require that impurities in drug substance and drug product levels recommended by the International Conference on Harmonisation (ICH) be isolated and characterized. Identifying process-related impurities and degradation products also helps us to understand the production of impurities and assists in defining degradation mechanisms. When this process is performed at an early stage, there is ample time to address various aspects of drug development to prevent or control the production of impurities and degradation products well before the regulatory filing and thus assure production of a high-quality drug product.This book, therefore, has been designed to meet the need for a reference text on the complex process of isolation and characterization of process-related (synthesis and formulation) impurities and degradation products to meet critical requlatory requirements.It's objective is to provide guidance on isolating and characterizing impurities of pharmaceuticals such as drug candidates, drug substances, and drug products. The book outlines impurity identification processes and will be a key resource document for impurity analysis, isolation/synthesis, and characterization. - Provides valuable information on isolation and characterization of impurities. - Gives a regulatory perspective on the subject. - Describes various considerations involved in meeting regulatory requirements. - Discusses various sources of impurities and degredation products.
Download or read book Impurities in Semiconductors written by Victor I. Fistul and published by CRC Press. This book was released on 2004-01-27 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although there is a good deal of research concerning semiconductor impurities available, most publications on the subject are very specialized and very theoretical. Until now, the field lacked a text that described the current experimental data, applications, and theory concerning impurities in semiconductor physics. Impurities in Semicondu
Download or read book Physics of Impurity Centres in Crystals written by and published by . This book was released on 1972 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shallow Impurity Centers in Semiconductors written by A. Baldereschi and published by Elsevier. This book was released on 2012-12-02 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shallow Impurity Centers in Semiconductors presents the proceedings of the Second International Conference on Shallow Impurity Centers/Fourth Trieste IUPAP-ICTP Semiconductor Symposium, held at the International Center for Theoretical Physics in Trieste, Italy, on July 28 to August 1, 1986. The book presents the perspectives of some of the leading scientists in the field who address basic physical aspects and device implications, novel phenomena, recent experimental and theoretical techniques, and the behavior of impurities in new semiconductor materials. Organized into 22 chapters, the book begins with an overview of the early years of shallow impurity states before turning to a discussion of progress in spectroscopy of shallow centers in semiconductors since 1960. It then looks at theoretical and experimental aspects of hydrogen diffusion and shallow impurity passivation in semiconductors, along with optical excitation spectroscopy of isolated double donors in silicon. The book methodically walks the reader through recent research on double acceptors using near-, mid-, and far-infrared spectroscopy, the far-infrared absorption spectrum of elemental shallow donors and acceptors in germanium, and impurity spectra in stress-induced uniaxial germanium using Zeeman spectroscopy. Other papers focus on the theoretical properties of hydrogenic impurities in quantum wells, lattice relaxations at substitutional impurities in semiconductors, shallow bound excitons in silver halides, and the electronic structure of bound excitons in semiconductors. The book concludes with a chapter that reviews picosecond spectroscopy experiments performed in III-V compounds and alloy semiconductors. This volume will be useful to physicists and researchers who are working on shallow impurity centers in semiconductor physics.
Download or read book Impurity and Death written by Chikara Abe and published by Universal-Publishers. This book was released on 2003-09 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Personal impurity caused by childbirth, menstrual blood or death is an issue of concern prevalent in many cultures. In Japan, the generic term for these kinds of impurities is kegare and death impurity, a sub-type of kegare, is known as shi-e. The major topic of this book is death impurity. The definition and genesis of shi-e are explained. In addition, details of the influence shi-e had on ancient Japanese society as well as its continuing influence on modern Japanese society are given. Three hypotheses are stated and supported: (1) the shi-e concept began in Japan during the Yayoi period (300 BC - 300 AD) rather than at a later date as previously hypothesized; (2) the basis for the aversion to dead bodies, i.e. shi-e, is that corpses remind people of the fact that they will soon die; (3) Buddhism and Shintoism merged in Japan because of the impact of shi-e on Shintoism. This book concludes with some comments on the relevance of knowledge of the death impurity for students of Japanese history, culture and society.
Download or read book Quantum Impurity Problems in the Framework of Natural Orbitals written by Maxime Debertolis and published by Springer Nature. This book was released on 2024-01-03 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a complete study of natural orbitals in quantum impurity problems, revealing a certain simplicity in these interacting many-body problems. These systems consist of a few localized degrees of freedom that undergo strong interactions and hybridize with a larger system of free particles; they are central in the study of strongly correlated systems. In a first step, the standard non-perturbative numerical renormalization group method is employed to demonstrate the hierarchical structure of correlations unveiled by natural orbitals. This simplification brought new insights for simulating quantum impurity problems, and a new algorithm is developed to generate an optimized subset of natural orbitals independently of existing methods, going beyond their usual limitations. This algorithm is presented in detail in the book, and a careful benchmark on known results is carried out to guarantee the validity of the method. It is then used to study spatial entanglement structures under various conditions that were not accessible with previous methods, such as representing the electron bath by a realistic 2D square lattice or taking account of static disorder in the metallic host. In the last chapter, the non-interacting problem in the presence of disorder is studied through random matrix theory, reproducing some of the results presented in the previous chapters. The main original result of this chapter lies in the analytical calculation of the joint distribution of one-particle orbitals energies and amplitudes of the impurity, which makes it possible to calculate any disordered averaged local correlation functions. Starting from this result, calculations in the large-N limit are compared with numerical simulations.
Download or read book Exquisite Mixture written by Wolfram Schmidgen and published by University of Pennsylvania Press. This book was released on 2012-11-29 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The culture of late seventeenth- and early eighteenth-century Britain is rarely credited with tolerance of diversity; this period saw a rising pride in national identity, the expansion of colonialism, and glorification of the Anglo-Saxon roots of the country. Yet at the same time, Wolfram Schmidgen observes, the concept of mixture became a critical element of Britons' belief in their own superiority. While the scientific, political, and religious establishment of the early 1600s could not imagine that anything truly formed, virtuous, or durable could be produced by mixing unlike kinds or merging absolute forms, intellectuals at the end of the century asserted that mixture could produce superior languages, new species, flawless ideas, and resilient civil societies. Exquisite Mixture examines the writing of Robert Boyle, John Locke, Daniel Defoe, and others who challenged the primacy of the one over the many, the whole over the parts, and form over matter. Schmidgen traces the emergence of the valuation of mixture to the political and scientific revolutions of the seventeenth century. The recurrent threat of absolutism in this period helped foster alliances within a broad range of writers and fields of inquiry, from geography, embryology, and chemistry to political science and philosophy. By retrieving early modern arguments for the civilizing effects of mixture, Schmidgen invites us to rethink the stories we tell about the development of modern society. Not merely the fruit of postmodernism, the theorization and valuation of hybridity have their roots in centuries past.
Download or read book Study on Impurity Radiation and Transport of JT 60U Plasmas written by Tatsuo Ishijima and published by . This book was released on 2000 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book VLSI Science and Technology written by and published by . This book was released on 1984 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
