موضوعات
آموزش و پرورش
ادبیات و زبان
پزشکی، دندانپزشکی و داروسازی
تاریخ و جغرافیا
داستان و رمان
دیگر
دین و فلسفه
روانشناسی
ریاضیات و آمار
سلامتی، تناسب اندام و رژیم غذایی
شیمی و پلیمر
علوم اجتماعی و حقوق
علوم زیستی و بیوتکنولوژی
فیزیک و نجوم
کامپیوتر و اینترنت
کتابهای کودکان و داستان
کسب و کار و اقتصاد
کشاورزی و دامپزشکی و غذا
معماری
مهندسی و فناوری
هنر و تئاتر
محصولات
Radiation Effects on Polymers for Biological Use - Original PDF
نویسندگان: خلاصه: Biomaterials repair, reinforce or replace damaged functional parts of the (human) body. All mechanical and biological interactions between an implant and the body occur across the interface, which has to correspond as nearly as possible to its particular function. Much of the progress in adapting polymer materials for use in a biological environment has been obtained through irradiation techniques. For this reason the most recent developments in four key areas are reviewed in this special volume: (1) the analysis of the topology and the elemental composition of a functional surface, (2) the chemical modification of the surface which results in highly pure, sterile and versatile surfaces, (3) the sterilisation of implantable devices via ionising radiation and its possible effects on the structural mechanical properties of polymers, and (4) the radiation effects on living cells and tissues which are of particular importance for radiation protection and radiotherapy.
Crystallization of polymers. Volume 1, Equilibrium concepts - Original PDF
نویسندگان: خلاصه: Polymers of high molecular weight have now been accepted as respectable members of the molecular community. This situation was not always true.(1) It is now recognized, however, that polymer molecules possess the unique structural feature of being composed of a very large number of chain units that are covalently linked together. This property is common to all macromolecules despite their diverse origin, their widely differing chemical and stereochemical structures and uses and function. It is, therefore, possible to study this class of substances from a unified point of view that encompasses the relatively simpler polymers prepared in the laboratory, as well as the more complex ones of nature. The characteristic thermodynamic, hydrodynamic, physical, and mechanical properties possessed by high polymeric substances can be explained, in the main, by their covalent structure and the attendant large size of the individual molecules.
Synthetic Polymers for Biotechnology and Medicine - Original PDF
نویسندگان: خلاصه: One of the most powerful group of chemicals in the body are organic compounds collectively referred to as hormones. The glands responsible for the production and release of hormones comprise the endocrine system. Endocrine activities have been identified in certain organs, such as the heart, kidneys, duodenum, liver and the islets of Langerhans in the pancreas (which contains the insulin gland), which are normally associated with other system functions. There have been numerous attempts to replace organ function using cell transplantation including direct injections of dissociated cells into organs such as the liver, kidney or spleen.1-5 Subcutaneous and intraperitoneal routes have also been evaluated.6-10 More recent investigations have applied extracellular matrix polymers as structural supports for cell transplantation and immunoprotection.11,12 Potential medical applications of such “artificial cells” or “tissue engineered” organoids include an extracorporeal bioartificial liver for detoxification,2 artificial red blood substitutes,13 the extracorporeal artificial kidney for hemodialysis,14 immunosorbents15 and drug delivery systems.16The transplantation of immunoisolated (microencapsulated) cells represents another emerging area in biotechnology research and commercialization. Under such a scenario, the encapsulated cells, which could be a xenograft, would be hidden from the immune system of the body, but would still be able to respond to extracellular stimuli (e.g., blood glucose), with the required hormone, in the case of diabetes therapy insulin, secreted into the systemic circulation. Other applications of the microencapsulation concept include the encapsulation of genetically modified cells, which represents a novel approach to somatic gene therapy.17 This chapter will review recent advances in cell encapsulation from material science, technological and tissue-related perspectives. Cell coating, microencapsulation devices and bioartificial organs will be discussed with the artificial pancreas and treatment of diabetes used as a case study denominator throughout the review.
Polymer Nanocomposite Coatings - Original PDF
نویسندگان: خلاصه: This work explores the use of composite nanotechnology for thin coatings on various substrates. It compiles recent advances in nanocomposite coatings for experienced researchers and provides background information for those new to the field. The book not only explains the synthesis of bulk nanocomposite materials, it describes their application in areas such as the automotive and packaging industries. It explains how nanocomposite coatings provide a gas barrier to the substrate foil or laminate and how the coatings are used to provide properties such as anti-scratch and anti-corrosion.
Adhesives, Sealants, and Coatings for Space and Harsh Environments - Original PDF
نویسندگان: خلاصه: New technologies constantly generate new demands for exotic materials to be used in severe environments. The rapid developments of aerospace industries during the last two decades have required new materials to survive extreme high and low temperatures and various radiations. The exploration of new energy sources, e.g., solar and geothermal, has led us to develop new solar collectors and geothermal devices. Even the search for new oils has demanded that we study the corrosive environment of oil fields. In the telecommunication industries, optical fibers have been adopted broadly to replace metallic conductors. However, none of the optical fibers can survive abrasion or corrosion without the application of a coating material. For microelectronics, protection in terms of coatings and encapsulants is deemed necessary to prevent corrosion. One of the major causes of corrosion has been shown to be water which appears to be abundant in our earthly environments. Water can attack the bulk adhesive (or sealant), the interface, or the adherend. Water can also cause delamination of coating film, and it is definitely the major ingredient in causing cathodic or anodic corrosion. Thus, water becomes the major obstacle in solving durability problems of various materials in harsh environments.
Introduction to Veterinary Genetics, 3rd Edition - PDF
نویسندگان: خلاصه: The concepts of veterinary genetics are crucial to understanding and controlling many diseases and disorders in animals. They are also crucial to enhancing animal production. Accessible and clearly presented, Introduction to Veterinary Genetics provides a succinct introduction to the aspects of genetics relevant to animal diseases and production. Now in its third edition, this is the only introductory level textbook on genetics that has been written specifically for veterinary and animal science students. Coverage includes: basic genetics, molecular biology, genomics, cytogenetics, immunogenetics, population genetics, quantitative genetics, biotechnology, and the use of molecular tools in the control of inherited disorders. This book describes in detail how genetics is being applied to artificial selection in animal production. It also covers the conservation of genetic diversity in both domesticated and wild animals. New for the Third Edition: End-of-chapter summaries provide quick recaps. Covers new topics: epigenetics, genomics and bioinformatics. Thoroughly revised according to recent advances in genetics. Introduction to Veterinary Genetics is still the only introductory genetics textbook for students of veterinary and animal science and will continue to be an indispensable reference tool for veterinary students and practitioners alike.
Successful Stock Signals for Traders and Portfolio Managers: Integrating Technical Analysis with Fundamentals to Improve Performance + Website - Original PDF
نویسندگان: خلاصه: Relative strength performance versus the Standard & Poors (S&P) 500 Index is the key to analyzing any large-cap (capitalization) stock, and is revealing when viewed in Exhibit 1.3. In this chapter, we will exploit the easiest and most powerful examples of technical analysis signals that tracked the demand that took Apple price up so dramatically. Relative strength is simply the comparison of a stock’s price movement to the price movement of the index. This is a simple, straight forward arithmetic ratio. It is then plotted and shown in Exhibit 1.3 as “AAPL: $SPX.” Notice the uptrend in the line created when the stock price is doing better than the index. As long as this line is in an uptrend, it classifies the stock as one that is outperforming the index. The trend line is calculated as a 20-week EMA. If you want to outperform the index this is the signal to watch.
Architects of Electronic Trading: Technology Leaders Who Are Shaping Today's Financial Markets - Original PDF
نویسندگان: خلاصه: Insights that can help you improve your technology edge Featuring contributions from technology visionaries at leading alternative investors, hedge funds, trading firms, exchanges, and vendors, this book covers current trends in trading technology. The book features interviews with the leaders responsible for the technology that is shaping today's electronic financial markets. You'll hear the views of CIOs, CTOs, and other technology leaders on emerging technologies, innovation in the financial sector, and how technology is enhancing markets in ways other than just speed. Their perspectives on harnessing technology to enhance computing power, reduce time to market, bolster risk management, and much more offer valuable lessons for readers. Includes a wealth of practical insights on how to improve your technology edge Features interviews with leading technology professionals in the financial industry across an array of asset classes and markets Serves as a topical guide to the latest developments, enhancements and applications of technology to tackle trading and risk management challenges Includes insights from top technology professionals on evaluating and adopting technology solutions Looks at the effects of technology on finance professionals and their businesses as well as the global finance industry generally
Gagari Chakrabarti, Chitrakalpa Sen (auth.) - Original PDF
نویسندگان: خلاصه: This study is an exploration of the Indian stock market, focusing on the possible presence of momentum trading. One thing, however, should be noted. While it is true that momentum trading, which tends to generate speculative bubbles, may result in a financial market crash, its nature in contrast might depend on the nature of the economy itself. The study, while exploring the presence and nature of momentum trading on the Indian stock market in recent years, seeks to relate it to significant structural breaks in the Indian or global economy. To be precise, it outlines a potential correlation between the instability in the stock market and the speculative trading on the market, exploring the question of whether it is human psychology that drives financial markets. In the process, the choice of a significant structural break has been obvious: the global financial meltdown of 2007-2008 – a crisis that has often been referred to as the worst ever since the crash of 1929. While analyzing the nature of momentum trading on the Indian stock market with regard to the financial crisis of 2007-08, the study takes into account two major representatives of the market, the BSE (Bombay Stock Index) and NSE (National Stock Index), for the period 2005 to 2012. This study seeks to answer a few important questions. First of all, it tries to unveil the underlying structure of the market. In doing so, it examines the following issues: (i) What was the latent structure of the Indian stock market leading up to the crisis of 2007-08? Does the structure offer insights into designing profitable trading strategies? (ii) Is it possible to construct a profitable portfolio on the Indian stock market? (iii) Is there any profitable trading strategy on the Indian stock market? While exploring these issues, the study delves deeper, breaking the whole period down into two sub-periods, before the crisis of 2008 and after the crisis. The purpose of this division is to determine whether there has been any discernible change in the market structure since the shock.
Algorithmic Trading: Winning Strategies and Their Rationale - Original PDF
نویسندگان: خلاصه: Praise for Algorithmic Trading"Algorithmic Trading is an insightful book on quantitative trading written by a seasoned practitioner. What sets this book apart from many others in the space is the emphasis on real examples as opposed to just theory. Concepts are not only described, they are brought to life with actual trading strategies, which give the reader insight into how and why each strategy was developed, how it was implemented, and even how it was coded. This book is a valuable resource for anyone looking to create their own systematic trading strategies and those involved in manager selection, where the knowledge contained in this book will lead to a more informed and nuanced conversation with managers."—DAREN SMITH, CFA, CAIA, FSA, Managing Director, Manager Selection & Portfolio Construction, University of Toronto Asset Management"Using an excellent selection of mean reversion and momentum strategies, Ernie explains the rationale behind each one, shows how to test it, how to improve it, and discusses implementation issues. His book is a careful, detailed exposition of the scientific method applied to strategy development. For serious retail traders, I know of no other book that provides this range of examples and level of detail. His discussions of how regime changes affect strategies, and of risk management, are invaluable bonuses."—Roger Hunter, Mathematician and Algorithmic Traderآیا کتاب مورد نظر هنوز بر روی سایت قرار نگرفته است؟ جای نگرانی نیست! کافی است بر روی گزینه سفارش کتاب کلیک کرده و درخواست خود را ثبت کنید. در کمتر از چند ساعت کتاب شما را آماده خواهیم کرد.