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
Liquid Crystalline Polymers - Original PDF
نویسندگان: خلاصه: As we know, there are three basic states of matter, solid, liquid, and gaseous states. These states of matter can be transformed into each other at appropriate conditions. In the solid state (generally meaning the crystalline state), the building blocks, such as atoms, or molecules, or clusters of molecules are packed closely and regularly, forming a crystal lattice. The X-ray diffraction of the state shows many regular diffraction spots. Over 95% of matter on the earth exist in the form of the crystalline state. The types of crystal structure are enormous. The physical properties of crystals are basically anisotropic. The crystals have a constant melting temperature (except for amorphous solids).
Macromolecules Containing Metal and Metal-Like Elements, Transition Metal-Containing Polymers - Original PDF
نویسندگان: خلاصه: Transition metal-containing macromolecules come in a wide variety of structures. While volume 5 of this series dealt with metal coordination polymers, in this book we focus on transition metal-containing polymers where the metal is bonded to at least one organic group through σ- and/or π-bonds. Many of the macromolecules covered in this volume are often referred to as organometallic polymers. The term organometallic compound refers to compounds that contain at least one metal–carbon (M–C) bond, whether the bond is σ or π or some combination of both types of bonding.
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.
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.
Microbiology Handbook: Dairy Products - Original PDF
نویسندگان: خلاصه: Milk and dairy products form a central part of the human diet, as they are rich in nutrients. On the other hand, because of their high nutrient value, they favour rapid microbial growth. In some cases, this microbial growth is beneficial, while in others it is undesirable. Dairy products may be contaminated with pathogens or microbial toxins; therefore, the microbiology of these products is of key interest to those in the dairy industry. 'Microbiology Handbook - Dairy Products' provides readers with an easy-to-use reference to microorganisms found in milk and dairy products. The handbook covers: initial microflora; sources of contamination; effects of processing on the survival and growth of microorganisms; spoilage; and hazards identified with the consumption of these products.
Medical Terminology: An Illustrated Guide 7th (seventh) - Original PDF
نویسندگان: خلاصه: We have tried to make this book easy to use and full of reinforcing drills. We have also included many phonetic pronunciations so you can recognize technical terms when they are spoken and can comfortably use them yourself. The online student learning resources offer many additional activities and an audio glossary. Each chapter opens with a short case study. Some of the words and abbreviations in these studies will be unfamiliar at the start, but return to the opening study after you have completed the chapter, and hopefully, it should make more sense. You are probably at the beginning of a long journey to gain accomplishment in your chosen fi eld. We hope that this book will aid you in that endeavor and provide a basis on which to build your career.
Katzung & Trevor's Pharmacology Examination and Board Review,12th Edition 12th Edition - Original PDF
نویسندگان: خلاصه: Concise discussion of the major concepts that underlie basic principles or specific drug groups in every Chapter full-color tables and figures (many new to this edition). review questions followed by answers and explanations. Two comprehensive 100-question practice exams, followed by answer keys and explanations for correct answers. Diagrams that visually organize drug groups and concepts. A list of high-yield terms and Definitions you must Know. Skill Keeper questions that prompt you to go back and review previous material to understand the link between topics. A checklist of tasks you should be able to perform upon completion of the Chapter summary tables that list the important drugs and include key information about their mechanism of action and effects, clinical uses, pharmacokinetics, drug interactions and toxicities. An Appendix of test taking strategies for the highest score possible.
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.آیا 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.