Download or read book Accelerated Aging written by Robert L. Feller and published by Getty Publications. This book was released on 1995-03-02 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accelerated Aging: Photochemical and Thermal Aspects represents the culmination of more than 40 years of research by noted scientist Robert L. Feller. The book focuses on the long-term performance of materials such as wool, dyes, and organic compounds; their resistance to change when exposed to environmental factors such as oxygen, ozone, moisture, heat, and light; and their physical durability with handling and use over time. Processes of deterioration are discussed based on speeded-up laboratory studies designed to clarify the chemical reactions involved and their physical consequences.

Download or read book Rate of Paper Degradation written by Henk J. Porck and published by Amsterdam : European commission on Preservation and Access. This book was released on 2000 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artificial Aging as a Predictor of Paper s Future Useful Life written by Helmut Bansa and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment with the artificial aging of paper which--in contrast with the usual practice--was carried out at relatively low temperatures (i.e., 50-95 degrees Celsius), and not on laboratory handsheets, but on naturally aged paper from the commercial production of four centuries, produced results justifying the thesis that there may be at best an accidental agreement between the results of artificial aging at high temperatures and natural aging. The chemical processes that take place as paper ages appear to take different temperature-specific courses, so that it is not possible to draw any conclusions from short-term expiration at one (elevated) temperature about the long-term expiration at another (room) temperature. If artificial aging cannot be dispensed with despite this uncertainty, aging should take place at 80 degrees Celsius and 65% relative humidity. The data collected are displayed in 24 tables and 10 figures. (Author/SD)

Download or read book Preservation Science Survey written by Henk J. Porck and published by Washington, D.C. : Council on Library and Information Resources. This book was released on 2000 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an overview of recent research in the preservation of three information carriers: paper, film and photographic materials, and magnetic tape. It covers significant developments internationally over the last five years and concentrates on emerging technologies that have the potential for large-scale application.

Download or read book Ageing of Composites written by Rod Martin and published by Elsevier. This book was released on 2008-08-29 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ageing of composites is a highly topical subject given the increasing use of composites in structural applications in many industries. Ageing of composites addresses many of the uncertainties about the long-term performance of composites and how they age under conditions encountered in service.The first part of the book reviews processes and modelling of composite ageing including physical and chemical ageing of polymeric composites, ageing of glass-ceramic matrix composites, chemical ageing mechanisms, stress corrosion cracking, thermo-oxidative ageing, spectroscopy of ageing composites, modelling physical and accelerated ageing and ageing of silicon carbide composites. Part two examines ageing of composites in transport applications including aircraft, vehicles and ships. Part three reviews ageing of composites in non-transport applications such as implants in medical devices, oil and gas refining, construction, chemical processing and underwater applications.With its distinguished editor and international team of contributors, Ageing of composites is a valuable reference guide for composite manufacturers and developers. It also serves as a source of information for material scientists, designers and engineers in industries that use composites, including transport, chemical processing and medical engineering. - Addresses many of the uncertainties about the long-term performance of composites and how they age under conditions encountered in service - Reviews processes and modelling of composite ageing including chemical ageing mechanisms and stress corrosion cracking - Discusses ageing of composites in both transport and non-transport applications ranging from aircraft to implants in medical devices

Download or read book Ageing and Stabilisation of Paper written by M. Strlic (ed.) and published by . This book was released on 2005 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Service Life Prediction of Polymers and Plastics Exposed to Outdoor Weathering written by Christopher White and published by William Andrew. This book was released on 2017-10-13 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Service Life Prediction of Polymers and Plastics Exposed to Outdoor Weathering discusses plastics and polymers and their unique applications, from sealants used in construction, to polymer composites used in planes. While these materials are important enablers for advanced technologies, exposure to weather changes the very properties of plastics that make them so useful. This book reviews current research needs and provides a consensus roadmap of the scientific barriers to validated predictive models for the response of polymers and plastics to outdoor exposure. Despite extensive efforts over the past 20-30 years, testing of polymeric materials in accelerated or natural weathering conditions and the interpretation of the weathering results still require substantial improvements. This book represents the state-of-the-art in the prediction techniques available and in development. Engineers and materials scientists working in this field will be able to use the content of this book to assess the strengths and challenges of a range of different methods and approaches. - Enables engineers and scientists in a range of industries to more successfully predict the durability of polymers, paints and coatings when exposed to weather - Provides the latest information to help determine the sustainability of polymeric materials - Reviews the current state-of-the-art in this area and identifies research needs that are followed by more detailed discussions of specific polymers and applications

Download or read book Proceedings of the 5th International Conference on Electrical Engineering and Information Technologies for Rail Transportation EITRT 2021 written by Limin Jia and published by Springer. This book was released on 2023-02-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reflects the latest research trends, methods and experimental results in the field of electrical and information technologies for rail transportation, which covers abundant state-of-the-art research theories and ideas. As a vital field of research that is highly relevant to current developments in a number of technological domains, the subjects it covered include intelligent computing, information processing, communication technology, automatic control, etc. The objective of the proceedings is to provide a major interdisciplinary forum for researchers, engineers, academicians and industrial professionals to present the most innovative research and development in the field of rail transportation electrical and information technologies. Engineers and researchers in academia, industry and government will also explore an insightful view of the solutions that combine ideas from multiple disciplines in this field. The volumes serve as an excellent reference work for researchers andgraduate students working on rail transportation and electrical and information technologies.

Download or read book Epigenetics of Aging written by Trygve O. Tollefsbol and published by Springer Science & Business Media. This book was released on 2009-11-11 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have indicated that epigenetic processes may play a major role in both cellular and organismal aging. These epigenetic processes include not only DNA methylation and histone modifications, but also extend to many other epigenetic mediators such as the polycomb group proteins, chromosomal position effects, and noncoding RNA. The topics of this book range from fundamental changes in DNA methylation in aging to the most recent research on intervention into epigenetic modifications to modulate the aging process. The major topics of epigenetics and aging covered in this book are: 1) DNA methylation and histone modifications in aging; 2) Other epigenetic processes and aging; 3) Impact of epigenetics on aging; 4) Epigenetics of age-related diseases; 5) Epigenetic interventions and aging: and 6) Future directions in epigenetic aging research. The most studied of epigenetic processes, DNA methylation, has been associated with cellular aging and aging of organisms for many years. It is now apparent that both global and gene-specific alterations occur not only in DNA methylation during aging, but also in several histone alterations. Many epigenetic alterations can have an impact on aging processes such as stem cell aging, control of telomerase, modifications of telomeres, and epigenetic drift can impact the aging process as evident in the recent studies of aging monozygotic twins. Numerous age-related diseases are affected by epigenetic mechanisms. For example, recent studies have shown that DNA methylation is altered in Alzheimer’s disease and autoimmunity. Other prevalent diseases that have been associated with age-related epigenetic changes include cancer and diabetes. Paternal age and epigenetic changes appear to have an effect on schizophrenia and epigenetic silencing has been associated with several of the progeroid syndromes of premature aging. Moreover, the impact of dietary or drug intervention into epigenetic processes as they affect normal aging or age-related diseases is becoming increasingly feasible.

Download or read book The Concorde Experience written by and published by . This book was released on 2005 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This gem of a gift book focuses on the first in the British Airways fleet to fly commerically, and is told through quotes from staff and passengers.

Download or read book Accelerated Testing written by Wayne B. Nelson and published by John Wiley & Sons. This book was released on 2009-09-25 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Wiley-Interscience Paperback Series consists of selected books that have been made more accessible to consumers in an effort to increase global appeal and general circulation. With these new unabridged softcover volumes, Wiley hopes to extend the lives of these works by making them available to future generations of statisticians, mathematicians, and scientists. ". . . a goldmine of knowledge on accelerated life testing principles and practices . . . one of the very few capable of advancing the science of reliability. It definitely belongs in every bookshelf on engineering." –Dev G. Raheja, Quality and Reliability Engineering International ". . . an impressive book. The width and number of topics covered, the practical data sets included, the obvious knowledge and understanding of the author and the extent of published materials reviewed combine to ensure that this will be a book used frequently." –Journal of the Royal Statistical Society A benchmark text in the field, Accelerated Testing: Statistical Models, Test Plans, and Data Analysis offers engineers, scientists, and statisticians a reliable resource on the effective use of accelerated life testing to measure and improve product reliability. From simple data plots to advanced computer programs, the text features a wealth of practical applications and a clear, readable style that makes even complicated physical and statistical concepts uniquely accessible. A detailed index adds to its value as a reference source.

Download or read book Cellulose written by Arnaud Lejeune and published by Nova Biomedical Books. This book was released on 2010-05-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellulose is the most widely spread organic polymer found in nature, since it constitutes the main component of the membrane of plant cell. It is well-known that cellulose is a very important and fascinating biopolymer and an almost inexhaustible and renewable raw material. This book provides a synthesis of the old knowledge and the development of different studies which contribute to the understanding of the structure of cellulose allomorphs. In addition, cellulosic ethanol has been taken as a promising alternative energy source for the non-renewable fossil fuel. This book reviews the development of biochemical conversion of biomass materials into cellulosic ethanol, including previous achievements, current status, and future work. The various aspects of natural and accelerated ageing of cellulose are also presented and discussed. Other chapters in this book explore the basic principles of cellulose oxidation chemistry with a focus on different products of the reactions. The main part of the chapter focuses on both known and newly proposed applications of oxidised celluloses in medical, cosmetic, hygiene and food industry. A critical analysis is also made of the literature concerned with the kinetics of cellulose degradation. Furthermore, this book reviews bacterial cellulose (BC), an outstanding biomaterial with unique properties, including high water holding capacity, high crystallinity and ultrafine fibre network. These properties support a wide range of applications, in human and veterinary medicine, odonthology, pharmaceutical industry, acoustic and filter membranes, biotechnological devices and in the food and paper industry.

Download or read book Mathematical Foundations of System Safety Engineering written by Richard R. Zito and published by Springer. This book was released on 2020-11-21 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This graduate-level textbook elucidates low-risk and fail-safe systems in mathematical detail. It addresses, in particular, problems where mission-critical performance is paramount, such as in aircraft, missiles, nuclear reactors and weapons, submarines, and many other types of systems where “failure” can result in overwhelming loss of life and property. The book is divided into four parts: Fundamentals, Electronics, Software, and Dangerous Goods. The first part on Fundamentals addresses general concepts of system safety engineering that are applicable to any type of system. The second part, Electronics, addresses the detection and correction of electronic hazards. In particular, the Bent Pin Problem, Sneak Circuit Problem, and related electrical problems are discussed with mathematical precision. The third part on Software addresses predicting software failure rates as well as detecting and correcting deep software logical flaws (called defects). The fourth part on Dangerous Goods presents solutions to three typical industrial chemical problems faced by the system safety engineer during the design, storage, and disposal phases of a dangerous goods’ life cycle.

Download or read book Endocrine and Metabolic Late Effects in Cancer Survivors written by Francesco Felicetti (Oncologist) and published by Karger Medical and Scientific Publishers. This book was released on 2021-11 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes in detail all aspects related to endocrine and metabolic late effects observed in patients treated for cancer, both in childhood and adulthood. The chapters focusing on the possible pathogenic mechanisms of late effects (i.e., premature aging and chronic inflammation) and on bone health in cancer survivors are particularly interesting and innovative. The volume also deals with hypothalamic-pituitary, thyroid and gonadal disorders, including infertility and how to prevent it. Finally, the relationship between metabolic alterations and cardiovascular diseases in cancer survivors is addressed. Thanks to advances in cancer treatment and supportive care, the five-year survival rate of cancer patients is constantly increasing. However, this undisputable success of medicine has a flip side: the late adverse effects of anticancer therapies. Pediatric oncologists were the first to cope with late complications of treatments, but today also adult oncologists and onco-hematologists recognize the relevance of this issue. Even though late effects observed in cancer survivors can affect any organ or system, endocrine and metabolic dysfunctions are the most frequently reported. Endocrine complications rarely influence life expectancy of cancer survivors, but they can significantly impact morbidity and quality of life. Among endocrine adverse effects, severe hypothalamic damage may be considered the most harmful in survivors, leading to morbid obesity, propensity to metabolic syndrome and cardiovascular disease. This book aims to disseminate the knowledge about endocrine and metabolic adverse effects of cancer therapies and about survivorship care. Since the number of cancer survivors is steadily growing in the general population, this publication is intended not only for endocrinologists but also for oncologists, onco-hematologists, internists, pediatric specialists in those areas and general practitioners, with the aim to better counsel and monitor cancer survivors.

Download or read book Age Proof written by Professor Rose Anne Kenny and published by Kings Road Publishing. This book was released on 2022-01-20 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: ___ ***SHORTLISTED FOR THE ROYAL SOCIETY SCIENCE BOOK PRIZE 2022*** Did you know that we can lead longer and healthier lives by making simple changes right now? Professor Rose Anne Kenny has 35 years of experience at the forefront of ageing medicine. In Age Proof, she draws on her own pioneering research and the latest evidence to demystify why we age and shows us that 80% of our ageing biology is within our control: we can not only live longer lives but become happier and healthier deep into our later years. Effortlessly distilling scientific theory into practical advice that we can apply to our everyday lives, Professor Kenny examines the impact that food, genetics, friendships, purpose, sex, exercise and laughter have on how our cells age. This illuminating book will show you the steps you can take to stay younger for longer - and will prove that you really are just as young as you feel.

Download or read book Understanding and Measuring the Shelf Life of Food written by R. Steele and published by Woodhead Publishing. This book was released on 2004-05-10 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The shelf-life of a product is critical in determining both its quality and profitability. This important collection reviews the key factors in determining shelf-life and how it can be measured. Part one examines the factors affecting shelf-life and spoilage, including individual chapters on the major types of food spoilage, the role of moisture and temperature, spoilage yeasts, the Maillard reaction and the factors underlying lipid oxidation. Part two addresses the best ways of measuring the shelf-life of foods, with chapters on modelling food spoilage, measuring and modelling glass transition, detecting spoilage yeasts, measuring lipid oxidation, the design and validation of shelf-life tests and the use of accelerated shelf-life tests. Understanding and measuring the shelf-life of food is an important reference for all those concerned with extending the shelf-life of food. Reviews the key factors in determining shelf-life and how they can be measured Examines the importance of the shelf-life of a product in determining its quality and profitability Brings together the leading international experts in the field

Download or read book 2021 22nd International Conference on Electronic Packaging Technology ICEPT written by and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: