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Plant Resins - Chemistry, Evolution, Ecology, and Ethnobotany |
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Категория: Естественные науки » Химические науки |
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Автор: Jean H.Langenheim
Издательство: Timber Press
Год издания: 2003
isbn: 0881925748
Количество страниц: 586
Язык: english
Формат: PDF
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When I was asked by Timber Press to write a new book on resins, including amber—Howes’s 1949 Vegetable Gums and Resins was the most recent such effort—the breadth of interdisciplinary coverage seemed too ambitious for an individual person. There have been so many advances in resin research in the past half century, including the development of new fields of research such as chemical ecology, and the exploration of other interesting facets about resins made possible by new chemical, molecular, and microscopic techniques. With a little thought, however, I realized that my years of resin research had prepared me to accept the challenge enthusiastically, a challenge that has been stimulating and rewarding. |
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Dirty passion Пилотный выпуск |
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Категория: Домоводство, досуг » Любовь, эротика |
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Издательство: Dirty passion
Количество страниц: 52
Язык: русский
Формат: PDF
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Dirty passion Пилотный выпуск |
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Numerical modeling of ocean circulation |
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Категория: Естественные науки » Науки о Земле » Геофизика, метеорология, океанология |
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Автор: Robert N.Miller
Издательство: Cambridge University Press
Год издания: 2007
isbn: 0521781825
Количество страниц: 254
Язык: english
Формат: PDF
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This text grew out of notes for a course taught to graduate students in physical oceanography at the College of Oceanic and Atmospheric Sciences at Oregon State University. The students are typically in their second year of graduate school, having passed introductory courses in theoretical physical oceanography. This is the background assumed for the course. Most of the students at this point have seen some numerical analysis. The course, and hence this text, is intended for all students of physical oceanography. Major emphasis is on those features that distinguish models of the ocean from other models in computational fluid mechanics. The intent is to examine ocean models critically, and determine what they do well and what they do poorly. We will ask when we can be confident that the model reflects nature, and when we can say that it is likely that we are looking at a feature of the model itself. |
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Master Photography (2010 No.04) |
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Категория: Хобби, коллекционирование » Фотография |
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Издательство: Master Photography
Год издания: 2010
Количество страниц: 44
Язык: english
Формат: PDF
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Master Photography (2010 No.04) |
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Smart Hydrogel Modelling |
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Категория: Естественные науки » Химические науки |
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Автор: Hua Li
Издательство: Springer
Год издания: 2009
isbn: 3642023673
Количество страниц: 373
Язык: english
Формат: PDF
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This is the first monograph of its kind, where a comprehensive and systematic description of modeling and simulation of the smart polymer hydrogels in BioMEMS environment is provided. It will cover the development of the models in form of nonlinear coupled partial differential governing equations for the smart hydrogels. Further, benchmark results, for simulation and prediction of responsive behaviour of the smart hydrogels to solution pH, externally applied electric voltage, environmental temperature, glucose/carbohydrates and salt concentration/ionic strength that are basic stimuli in common BioMEMS devices, are also documented. Finally, it is written in as simple a manner as possible, such that it will make informative and easy reading for the expert, and concurrently it can serve as a rich reference source for a graduate student intending to work in this area. |
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Аналитическая химия. Качественный анализ |
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Категория: Естественные науки » Химические науки |
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Автор: Жаркова Г.М. Петухова Э.Е.
Издательство: Химия
Год издания: 1993
isbn: 5-7245-0406-5
Количество страниц: 320
Язык: русский
Формат: DJVU
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Рассмотрены теоретические основы аналитической химии. Описаны практические занятия и примеры типовых расчетов, лабораторные работы, техника и условия выполнения аналитических реакций. Приведена кислотно-щелочная схема анализа катионов.
Для учащихся техникумов, специализирующихся по аналитическому контролю качества химических соединений. Может быть использована для подготовки учащихся техникумов химико-технологических специальностей и повышения квалификации лаборантов химико-аналитических лабораторий. |
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Adaptive Mesh Refinement for Time-Domain Numerical Electromagnetics |
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Категория: Естественные науки » Физико-математические науки » Физика |
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Автор: Costas D.Sarris
Издательство: Morgan & Claypool
Год издания: 2007
isbn: 1598290789
Количество страниц: 154
Язык: english
Формат: PDF
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This monograph is a comprehensive presentation of state-of-the-art methodologies that can dramatically enhance the efficiency of the finite-difference time-domain (FDTD) technique, the most popular electromagnetic field solver of the time-domain form of Maxwell’s equations. These methodologies are aimed at optimally tailoring the computational resources needed for the wideband simulation of microwave and optical structures to their geometry, as well as the nature of the field solutions they support. That is achieved by the development of robust “adaptive meshing” approaches, which amount to varying the total number of unknown field quantities in the course of the simulation to adapt to temporally or spatially localized field features. While mesh adaptation is an extremely desirable FDTD feature, known to reduce simulation times by orders of magnitude, it is not always robust. The specific techniques presented in this book are characterized by stability and robustness. Therefore, they are excellent computer analysis and design (CAD) tools. |
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The Great International Paper Airplane Book |
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Категория: Хобби, коллекционирование » Оригами |
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Автор: Mander J. Dippel G. Gossage H.
Издательство: Fireside
Год издания: 1971
isbn: 671-21129-3
Количество страниц: 127
Язык: english
Формат: DJVU
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My dad bought this book for me when I was 9 years old, and I was hooked on making paper airplanes for years--and so was he! This delightful book, first published in 1967, and still in print, brings together plans for the 20 best of the 11,851 entrants from the 1st International Paper Airplane contest sponsored by Scientific American. Some trivia: the smallest entry was .08" x .00003 inches; the largest, 11 feet!. Guranteed to provide hours of amusement, and possibly even inspire careers in aerodynamics. (The polymathic primary author of this book--Jerry Mander--has also written a tremendous volume on the inherent evils of television as a medium, Four Arguments for the Elimination of Television). |
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