Download or read book Chemical Effects of Nuclear Activations in Perchloro and Perfluorocarbons written by Aad van Dulmen and published by . This book was released on 1968 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1970 with total page 1202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymer Electrolyte Fuel Cell Durability written by Felix N. Büchi and published by Springer Science & Business Media. This book was released on 2009-02-08 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a significant number of R&D projects, performed mostly after 2000, devoted to the understanding and prevention of performance degradation processes in polymer electrolyte fuel cells (PEFCs). The extent and severity of performance degradation processes in PEFCs were recognized rather gradually. Indeed, the recognition overlapped with a significant number of industrial dem- strations of fuel cell powered vehicles, which would suggest a degree of technology maturity beyond the resaolution of fundamental failure mechanisms. An intriguing question, therefore, is why has there been this apparent delay in addressing fun- mental performance stability requirements. The apparent answer is that testing of the power system under fully realistic operation conditions was one prerequisite for revealing the nature and extent of some key modes of PEFC stack failure. Such modes of failure were not exposed to a similar degree, or not at all, in earlier tests of PEFC stacks which were not performed under fully relevant conditions, parti- larly such tests which did not include multiple on–off and/or high power–low power cycles typical for transportation and mobile power applications of PEFCs. Long-term testing of PEFCs reported in the early 1990s by both Los Alamos National Laboratory and Ballard Power was performed under conditions of c- stant cell voltage, typically near the maximum power point of the PEFC.
Download or read book List of References on Nuclear Energy written by and published by . This book was released on 1969 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atomindex written by and published by . This book was released on 1969 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Library of Congress Catalog written by Library of Congress and published by . This book was released on 1970 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with 1953, entries for Motion pictures and filmstrips, Music and phonorecords form separate parts of the Library of Congress catalogue. Entries for Maps and atlases were issued separately 1953-1955.
Download or read book Hitotsubashi Journal of Arts Sciences written by and published by . This book was released on 1971 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Higher Education and Research in the Netherlands written by and published by . This book was released on 1969 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Library of Congress Catalogs written by Library of Congress and published by . This book was released on 1976 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biochemical Modulation of Skin Reactions written by Agis F. Kydonieus and published by CRC Press. This book was released on 1999-12-15 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like almost every major scientific or medical breakthrough in history, the transdermal delivery of drugs started as only an idea - slowly moving its way from the drawing board to actual testing and eventually approval. Today, there are more than 20 companies involved in transdermal drug delivery. In addition, almost every large pharmaceutical firm has ongoing transdermal delivery programs. But in spite of this effort and after 15 years from the introduction of the Nitroglycerin patch, only six transdermal drugs exist in the marketplace. The practice has been hampered by the fact that most drugs, as well as many excipients used in the manufacture of transdermal patches, cause skin irritation or skin sensitization. Similar problems exist with the application of dermatologicals and cosmetics to skin, which in many cases are equally as severe as those encountered in transdermal delivery. Biochemical Modulation of Skin Reactions: Transdermals, Topicals, Cosmetics presents a series of chapters describing technologies and the practical application of biochemicals which might lead to the reduction or abrogation of these skin reaction. In addition, it addresses those areas of skin immunology and skin sciences that account for the processes that control irritant and allergic contact dermatitis and outlines the numerous cellular and molecular factors involved in the development of irritation and sensitization. Indeed, Biochemical Modulation of Skin Reactions helps serve as a catalyst for further research in the field, allowing for more drugs and cosmetics to be applied to the skin without adverse effects. Features
Download or read book Hitotsubashi Journal of Economics written by and published by . This book was released on 1971 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973-09 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Union Catalog written by and published by . This book was released on 1968 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases.
Download or read book Alternatives for Managing the Nation s Complex Contaminated Groundwater Sites written by National Research Council and published by National Academies Press. This book was released on 2013-02-27 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Across the United States, thousands of hazardous waste sites are contaminated with chemicals that prevent the underlying groundwater from meeting drinking water standards. These include Superfund sites and other facilities that handle and dispose of hazardous waste, active and inactive dry cleaners, and leaking underground storage tanks; many are at federal facilities such as military installations. While many sites have been closed over the past 30 years through cleanup programs run by the U.S. Department of Defense, the U.S. EPA, and other state and federal agencies, the remaining caseload is much more difficult to address because the nature of the contamination and subsurface conditions make it difficult to achieve drinking water standards in the affected groundwater. Alternatives for Managing the Nation's Complex Contaminated Groundwater Sites estimates that at least 126,000 sites across the U.S. still have contaminated groundwater, and their closure is expected to cost at least $110 billion to $127 billion. About 10 percent of these sites are considered "complex," meaning restoration is unlikely to be achieved in the next 50 to 100 years due to technological limitations. At sites where contaminant concentrations have plateaued at levels above cleanup goals despite active efforts, the report recommends evaluating whether the sites should transition to long-term management, where risks would be monitored and harmful exposures prevented, but at reduced costs.
Download or read book The National Union Catalogs 1963 written by and published by . This book was released on 1964 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Understanding Environmental Pollution written by Marquita K. Hill and published by Cambridge University Press. This book was released on 2004-08-26 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding Environmental Pollution systematically introduces pollution issues to students and others with little scientific background. The first edition received excellent reviews, and the new edition has been completely refined and updated. The book moves from the definition of pollution and how pollutants behave, to air and water pollution basics, pollution and global change, solid waste, and pollution in the home. It also discusses persistent and bioaccumulative chemicals, and pesticides, and it places greater stress on global pollutants. The relationship between energy generation and use, and pollution is stressed, as well as the importance of going beyond pollution control, to pollution prevention. Impacts on human and environmental health are emphasized throughout. Students are often invited to come to their own conclusions after having been presented with a variety of opinions. This textbook provides the basic concepts of pollution, toxicology and risk assessment for non-science majors as well as environmental science students.
Download or read book Methodologies for Metabolomics written by Norbert W. Lutz and published by Cambridge University Press. This book was released on 2013-01-21 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metabolomics, the global characterisation of the small molecule complement involved in metabolism, has evolved into a powerful suite of approaches for understanding the global physiological and pathological processes occurring in biological organisms. The diversity of metabolites, the wide range of metabolic pathways and their divergent biological contexts require a range of methodological strategies and techniques. Methodologies for Metabolomics provides a comprehensive description of the newest methodological approaches in metabolomic research. The most important technologies used to identify and quantify metabolites, including nuclear magnetic resonance and mass spectrometry, are highlighted. The integration of these techniques with classical biological methods is also addressed. Furthermore, the book presents statistical and chemometric methods for evaluation of the resultant data. The broad spectrum of topics includes a vast variety of organisms, samples and diseases, ranging from in vivo metabolomics in humans and animals to in vitro analysis of tissue samples, cultured cells and biofluids.
