• Victor R.Preedy, Gerard N.Burrow, Ronald Ross Watson
  • Издательство: Academic Press
  • ISBN: 0123741351
  • Год издания: 2009
  • Кол.страниц: 1334
  • Язык: английский
  • Формат: PDF
  • Размер: 32,2 Mb
This handbook is a comprehensive and valuable reference resource on all aspects of iodine – its chemistry, metabolism and the effects of iodine deficiency and excess. Iodine is essential for the normal development of all animals and man. Its basic biological importance is indicated by the fact that the tadpole will not undergo metamorphosis into the frog without the function of the thyroid gland in secreting the iodine-containing thyroid hormones.
  • Ramon Vilar
  • Издательство: Springer
  • ISBN: 3540790918
  • Год издания: 2008
  • Кол.страниц: 261
  • Язык: английский
  • Формат: PDF
  • Размер: 5,23 Mb
A large number of biologically relevant species are negatively charged, therefore it is not surprising that nature has developed sophisticated receptors to recognise, detect and transform anions. For example, complex receptors such as phosphate- and sulphate-binding proteins are employed by living cells to selectively recognise these two geometrically analogous anions. In addition to their roles in biological systems, some anions also have important environmental impacts. For example, cyanide, pertechnetate and chromates pose serious health problems if present in water supplies. Because of their important biological roles and potential environmental impact there is great current interest in developing molecular receptors to selectively recognise anions and in doing so be able to sequester, transformor sense them. The six chapters presented in this volume provide an overview of anion recognition and the most recent advances in this fast-growing area of supramolecular chemistry are highlighted.
  • Robert H.Grubbs
  • Издательство: Wiley-VCH
  • ISBN: 3527306161
  • Год издания: 2003
  • Кол.страниц: 1185
  • Язык: английский
  • Формат: PDF
  • Размер: 21,2 Mb
Not only did Ziegler’s discovery of metal-catalyzed olefin polymerizations forever change polymer science, but also the science surrounding it supplied the motivation for many areas of modern organometallic chemistry research [1]. Out of the explorations into new catalysts for the addition polymerization of olefins came a new type of catalyst, one that produced unsaturated polymers from cyclic olefins and ethylene-propylene copolymers from a simple propylene feed. It took a considerable amount of time, however, for researchers to realize that these two, apparently different, reactions were the same and that they represented a fundamentally new reaction.
  • Jurgen U.Keller, Reiner Staudt
  • Издательство: Springer
  • ISBN: 0387235973
  • Год издания: 2005
  • Кол.страниц: 436
  • Язык: английский
  • Формат: PDF
  • Размер: 14,47 Mb
This book is intended to present for the first time experimental methods to measure equilibria states of pure and mixed gases being adsorbed on the surface of solid materials. It has been written for engineers and scientists from industry and academia who are interested in adsorption based gas separation processes and/or in using gas adsorption for characterization of the porosity of solid materials.
  • Gurpreet S.Ahluwalia
  • Издательство: Willia Andrew
  • ISBN: 0815515723
  • Год издания: 2009
  • Кол.страниц: 552
  • Язык: английский
  • Формат: PDF
  • Размер: 7,76 Mb
Though cosmetic science dates back nearly 4000 years, it is in the last two to four decades that the industry has made the most progress by coming up with high potency bioactive ingredients now part of cosmeceuticals, innovative topical drugs for beauty treatments, minimally invasive injectables such as Botox® Cosmetic and dermal fi llers, and non-invasive, non-ablative laser and light-based systems for cosmetic dermatology. The laser and light-based systems are preferred by the consumer who demands more than what creams and topical drugs can deliver and thinks that injectables and surgery are a step too far. The cosmetic targets for these systems are diverse and include the removal of unwanted hair; the treatment of photodamaged and unevenly pigmented skin to improve tone, texture, and imperfections similar to what is achieved with aggressive peels and exfoliants; and the treatment of fi ne lines, wrinkles, and laxity to improve skin appearance and give it a rejuvenated look. The treatment of acne, vascular disorders, cellulite, pseudofolliculitis barbae (PFB), and the removal of tattoos and benign pigmented lesions are some additional conditions targeted by laser and light systems.
  • Smith
  • Издательство: Lippincott Williams & Wilkins
  • ISBN: 978-0-7817-2145-5
  • Год издания: 2004
  • Кол.страниц: 900
  • Язык: английский
  • Формат: PDF
  • Размер: 29,78 Мб
This best-selling resource utilizes a comprehensive yet practical approach that students understand. The authors present facts and pathways to emphasize how the underlying biochemistry is related to the bodys overall physiological functions. Detailed case studies show students the relationship between biochemistry and clinical problems. The Second Edition has been heavily revised with completely updated illustrations while maintaining the unique, patient-oriented approach that made the original so popular.
  • Лучинский
  • Издательство: Химия
  • Год издания: 1971
  • Кол.страниц: 472
  • Язык: русский
  • Формат: DJVU
  • Размер: 3,77 Мб
Монография, поясвященная одному из переходных элементов - титану. Описаны физические и химические свойства элекмента, а также его многочисленных огранических и неорганических производных. Описаны методы получения и анализа.
  • A., Barile (frank)
  • Издательство: Informa
  • ISBN: 978-0-8493-9025-8
  • Год издания: 2008
  • Кол.страниц: 352
  • Язык: английский
  • Формат: PDF
  • Размер: 6,59 Мб
Provides coverage of methods and issues in toxicology testing. This book offers introduction to the fundamental basics of toxicology, including principles of toxicokinetics, adsorption, distribution, metabolism, and the elimination of xenobiotics. It presents a discussion of toxicity testing in animals.
  • Аверко-Антонович И.Ю., Бикмуллин Р.Т.
  • Издательство: Химия
  • ISBN: 5-7882-0221-3
  • Год издания: 2002
  • Кол.страниц: 604
  • Язык: русский
  • Формат: DJVU
  • Размер: 12,64 Мб
Рассмотрены основные методы исследования полимеров, применяемые в отечественной и зарубежной практике. Основное внимание уделено изучению эластомеров и продуктов их переработки. Изложены современные тенденции аналитической химии полимеров, описаны новейшие и перспективные методы и марки приборов.
  • Dawn B., PH.D. Marks, Allan D. Marks, Colleen M. Smith
  • Издательство: Lippincott Williams & Wilkins
  • ISBN: 978-0683055955
  • Год издания: 1996
  • Кол.страниц: 920
  • Язык: английский
  • Формат: PDF
  • Размер: 28,43 Мб
Dr. Dawn Marks and her coauthors cover human biochemistry in a reasonably comprehensive fashion for students, using case studies to show the relationship between biochemistry and clinical problems. Facts and pathways are presented to emphasize how the underlying biochemistry is related to the body's overall physiological functioning.
  • Левич В.Г.
  • Издательство: Физматгиз
  • Год издания: 1959
  • Кол.страниц: 700
  • Язык: русский
  • Формат: DJVU
  • Размер: 17,95 Мб
В книге освещен круг вопросов, связанных как с влиянием движения жидкостей на физические или физико-химические превращения, так и с влиянием физико-химических факторов на движение жидкостей.
  • Zvi Rappoport
  • Издательство: Wiley
  • ISBN: 0471917389
  • Год издания: 1987
  • Кол.страниц: 1751
  • Язык: английский
  • Формат: PDF
  • Размер: 25,6 MB
The cyclopropyl group has enough special characteristics to distinguish it from other alkyl and cycloalkyl groups and we believe it deserves a special volume dealing with its chemistry. Two chapters related to this group appeared in previous volumes of the series. The similarities between cyclopropanes and olefins were discussed in a chapter on the "Olefinic properties of Cyclopropanes" in The Chemistry of Alkenes, Vol. 2 (1970) and "Dihalocyclopropanes" were described in Supplement D (1983) which deals with the carbon-halogen bond.
  • David N.-S.Hon, Nobuo Shiraishi
  • Издательство: Marcel Dekker, Inc
  • ISBN: 0824700244
  • Год издания: 2001
  • Кол.страниц: 923
  • Язык: английский
  • Формат: PDF
  • Размер: 79,7 Mb
Life and its surroundings are constantly changing within our dynamic world. As we stride into the new millennium, information technology and biotechnology continue to flourish. Rapid economic expansion, social development, and high demands for shelter, clothing, energy, and food for our overpopulated world have resulted in a desperate need for new and yet functional materials to support society’s infrastructure. Wood or lignocellulosic-based materials have made a significant contribution to the quality of living for human beings. With new developments in wood chemistry, scientists are confident that wood will continue to play an important role in fulfilling the needs of human beings. Over the past decade, the trend of emphasizing bio-based technologies has been observed worldwide. In February 1998, a long-term development project, PlanVCrop-based Renewable Resources 2020, was implemented among the U.S. Department of Agriculture, U.S. Department of Energy, and many U.S. companies, agricultural associations, and universities.
  • Mihaly Nogradi
  • Издательство: VCH
  • ISBN: 3521292438
  • Год издания: 1995
  • Кол.страниц: 382
  • Язык: английский
  • Формат: PDF
  • Размер: 14,65 Mb
The quest for selectivity in synthesis still continues as the most important focal area for chemists, and the drive for stereoselectivity is among the most coveted goals. For the past fifty years, organic chemists have pursued the understanding and control of stereochemical behavior, and in 1956 an outstanding monograph appeared entitled “Steric Effects in Organic Chemistry”, edited by M. S. Newman. This work placed stereochemistry, both qualitatively and quantitatively, in its proper position of importance in organic chemistry. Following this, in 1969, Hassel and Barton shared a Nobel Prize for the concepts of molecular conformation, further propelling stereochemistry into the limelight. Again, in 1975, the Nobel Prize was awarded to Cornforth and Prelog for stereochemical reactions, and further intensified efforts to enhance both relative and absolute stereoselectivity.
  • Jeffrey M.Smith
  • Издательство: Chelsea Green Publishing
  • ISBN: 0972966587
  • Год издания: 2003
  • Кол.страниц: 305
  • Язык: английский
  • Формат: PDF
  • Размер: 10,34 Mb
What do genetically modified seeds have to do with democracy ? Everythug. To me, this craze-just like the sudden emergence of grain-fed meat I first wrote about thirty-three years ago-is a symptom. It is a symptom of our silencing. Think about it: None of us called for genetic manipulation of seeds. No not one of us said, yes, this new technology will benefit me, my family, and my community. Just as with the risks of feedlot beef, now contributing to heart disease, groundwater depletion, antibiotic resistance, and more, no citizens were asked to weigh the risks of GMOs against possible gains. Yet today most of us are eating them, while kept completely in the dark as to the hazards we may be facing-for ourselves, our children, and the farming ecosystems on which our lives depend.