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
A companion to astronomy and astrophysics: chronology and glossary with data tables - Original PDF
نویسندگان: خلاصه: Astronomy and Astrophysics is a comprehensive, fundamental, up-to-date reference book. It is filled with vital information and basic facts for amateur astronomers and professional astrophysicists, and for anyone interested in the Universe, from the Earth and other planets to the stars, galaxies and beyond. Although serious and thorough, the language, and ideas will attract the general reader, as well as students and professionals.
The origin and evolution of the solar system - Original PDF
نویسندگان: خلاصه: A graduate-level tex outlining a succession of theories on the origin and evolution of the solar system, providing details gathered by modern astronomers that may be helpful in producing a plausible theory and giving new constraints that must be satisfied by a theory. Includes black and white and color illustrations.
Portals to the Universe: The NASA Astronomy Science Centers - Original PDF
نویسندگان: خلاصه: The field of astronomy and astrophysics has advanced significantly with the advent of orbiting observatories. The ability to observe unobstructed by Earth’s atmosphere has opened new spectral windows and provided clearer, deeper views of the universe. Working with powerful new ground-based tools, astronomers and astrophysicists have revolutionized our understanding of the universe and the physical laws that govern its existence.
History of Astronomy - Original PDF
نویسندگان: خلاصه: Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: fifth century B.c. [the present reformed Jewish calendar dating from the fourth century A.d.], a date a " little more than a century after the grandfathers and great-grandfathers of those whose business is recorded had fled into Egypt with Jeremiah " (Sayce); and (2) that the order of intercalation at that time was not dissimilar to that in use at the present day. Then again, Knobel reminds us of " the most interesting discovery a few years ago by Father Strassmeier of a Babylonian tablet recording a partial lunar eclipse at Babylon in the seventh year of Cambyses, on the fourteenth day of the Jewish month Tammuz." Ptolemy, in the Almagest (Suntaxis), says it occurred in the seventh year of Cambyses, on the night of the seventeenth and eighteenth of the Egyptian month Phamenoth.
Mechanical Properties of Polymers and Composites - Original PDF
نویسندگان: خلاصه: This text, now in its second edition, offers an up-to-date, expanded treatment of the behaviour of polymers with regard to material variables and test and use conditions. It highlights general principles, useful empirical rules and practical equations; detailing the specific behaviour of many common polymers, the text: places emphasis on time and frequency dependence over temperature dependence; uses contemporary molecular mechanisms to explain creep, stress relaxation, constant strain rate responses and crazing; provides explicit equations to predict responses; supplies a discussion of large deformation multiaxial responses; compares statistical and continuum theories on the same data set; and updates stress-strain behavior and particulate filled systems.
Natural Polymers: Industry Techniques and Applications - Original PDF
نویسندگان: خلاصه: This book introduces the most recent innovations in natural polymer applications in the food, construction, electronics, biomedical, pharmaceutical, and engineering industries. The authors provide perspectives from their respective range of industries covering classification, extraction, modification, and application of natural polymers from various sources in nature. They discuss the techniques used in analysis of natural polymers in various systems incorporating natural polymers as well as their intrinsic properties.
Polymer coatings : a guide to chemistry, characterization, and selected applications - Original PDF
نویسندگان: خلاصه: Materials always have been of crucial importance for society. The wide range of the presently existent materials provides a large variety of properties that have been put to full use for many applications. However, applications often require a combination of properties or, actually, different properties at different locations and times, dependent on the circumstances at hand. Hence, combinations of materials are important and, since properties at surfaces are usually required to be different from those in bulk, coatings have become an important branch of materials science.
Functional Polymer Coatings: Principles, Methods, and Applications - Original PDF
نویسندگان: خلاصه: Focusing on a variety of coatings, this book provides detailed discussion on preparation, novel techniques, recent developments, and design theories to present the advantages of each function and provide the tools for better product performance and properties. • Presents advantages and benefits of properties and applications of the novel coating types • Includes chapters on specific and novel coatings, like nanocomposite, surface wettability tunable, stimuli-responsive, anti-fouling, antibacterial, self-healing, and structural coloring • Provides detailed discussion on recent developments in the field as well as current and future perspectives • Acts as a guide for polymer and materials researchers in optimizing polymer coating properties and increasing product performance
Natural polymers for drug delivery - Original PDF
نویسندگان: خلاصه: Natural polymers have been utilized extensively in food, pharmaceuticals, cosmetics, textiles, oil drilling and paint industries. Their non-toxic and inexpensive attributes readily enhance their commercial acceptability and make them potent agents in lieu of synthetic polymers. This book explores the opportunistic utility of natural polymers in developing effective drug delivery systems and provides a comprehensive and up-to-date analysis of their source, chemical structure and mechanism of action. Covering novel polymers for drug delivery--in particular extracts from plants, microorganisms and proteins, as well as water soluble and water insoluble biodegradable polymers--it presents an encyclopedic overview of natural polymers: * quintessential roles in binding drugs towards enhancing bio-availability * modification and derivatization for targeted delivery * role as active drugs Natural Polymers for Drug Delivery is an invaluable resource for researchers, students and industrial scientists in the fields of biochemistry, chemistry, pharmacology and food science
Natural Polymer Drug Delivery Systems: Nanoparticles, Plants, and Algae - Original PDF
نویسندگان: خلاصه: Drug delivery is attractive approach for medicine fi eld, as more potent and specifi c drugs are being developed. With the integration of nanotechnology, socalled smart drug-delivery systems integrate biosensing functionalities which sustain independently in vivo reaction control that resulting in part unique features of the term Nanomedicine. Nanotechnology is one of the very frontiers of science today. Current polymeric research is dominantly participating in the advancement of nanotechnology by offering the controlled release of therapeutic agents in constant doses over prolong periods, cyclic dosage, and tunable release of both hydrophilic and hydrophobic drugs. Many biomaterials can be used to this end, offering extensive chemical diversity and the potential for further modifi cation using nanoparticles. Conventional methods of drug delivery present several disadvantages, mainly due to off-target effects that may originate severe side and toxic effect to healthy tissues. New drug delivery systems based on nanoscale devices showing new and improved properties and developed as promising solutions for achieving desirable therapeutic effi cacy. Here, we provide a broad overview of novel nanoparticle based drug delivery systems, covering its innovations, applications and commercialization systems using both natural and synthetic polymers.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.