D. Vaughan – författare
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5 produkter
5 produkter
1 606 kr
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This advanced text provides an overview of the rapidly developing field of mineral surface science. Each chapter, written by acknowledged experts, comprises a completely up-to-date review of an aspect of the investigation into the character and reaction of mineral surfaces. Theoretical concepts and experimental techniques are explained and illustrated, and the present-day status of the science is revealed. These chapters aim to introduce the topic covered, as well as provide a detailed insight into the current developments in the study of mineral surfaces. The surfaces of minerals can now be studied at the molecular level, enabling understanding of the fundamentals of phenomena such as: the breakdown of minerals; sorption of species including metals on minerals surface; and the role of minerals as catalysts. Such phenomena are central to an understanding of many processes taking place at the surface of the Earth, whether natural or resulting from human activity. They are also central to many industrial processes in the fields of mineral extraction and industrial mineral chemistry.This book should be of interest to advanced undergraduates and postgraduates in mineralogy, soil science, catalysis and solid state chemistry, and materials science; and technologists in the minerals industry chemical industry and environmental industry.
858 kr
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The Asian beans and grams, the species of Vigna (subgenus Ceratotropis), include several legumes that are an essential component in the diets of a large proportion of Asia's population, and interest in these legumes is growing as ethnic cuisine spreads worldwide. However, this important group of legumes is little known compared to the closely related Phaseolus beans and soybean. That deficiency is addressed for the first time in this fully illustrated comprehensive conservation, genetics, taxonomic, and agricultural monograph on the genetic resources of the Asian Vigna. The book deals with the phylogeny of the group from the perspectives of morphological and molecular analyses, ex situ and in situ conservation, eco-geographical analyses, and research. In addition, morphological descriptions, keys, and eco-geographic details of each species in the group are provided. This genetic resources handbook and guide to the Asian Vigna will be a valuable reference for agriculturists, conservationists, taxonomists, other scientists, and students interested in the legumes and plant genetic resources.
Ophthalmologie
Diagnose und Therapie in der Praxis. Ein Lehrbuch für Studenten, Assistenten und Ärzte
Häftad, Tyska, 2011
725 kr
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In Zeiten rapide anwachsenden Wissens auf vielen Gebieten der Augenheilkunde ist es schwierig, ein Buch zu schreiben, das nicht sehr schnell seinen Wert dadurch ein büßt, daß es schon vor oder kurz nach seinem Erscheinen von der Entwicklung des Fa ches überholt wird. VAUGHAN und ASHBURY haben hier seit der ersten Auflage ihrer "General Ophthalmology" im Jahre 1958 eine Meisterleistung vollbracht. Es ist ihnen gelungen, ihr Buch durch Neuauflagen, die im Abstand von jeweils 2-3 Jahren erfolg ten, auf dem neuesten Stand zu halten. Mit ungeheurem Fleiß und großem Geschick wurde dabei Überholtes eliminiert, während neue pathophysiologische Erkenntnisse, theoretische Konzepte und chirurgische Techniken aufgenommen wurden. Sehr ge wissenhaft wurde dabei darauf geachtet, daß nur solche Neuerungen Eingang fanden, die sich in Klinik und Praxis bewährt und so ihre anhaltende Gültigkeit unter Beweis gestellt hatten. Auf diese Weise ist ein Werk entstanden, das keinerlei Ballast enthält, aber seit Jahren all das umfaßt, was der Student und der junge ophthalmologische Assistenzarzt über das Fach wissen sollten. Die medizinische Ausbildung hat in den letzten Jahren einschneidende Veränderungen erfahren. An die Stelle einer konse quent aufgebauten Vorlesung ist das Praktikum getreten, das nur einen unvollkomme nen Einblick in den systematischen Aufbau des Faches, seine Probleme und seine Möglichkeiten vermitteln kann. Es ist daher in zunehmendem Maße Aufgabe eines gu ten Lehrbuches, diese Lücke zu schließen und dem Studenten in überschaubarer Wei se einen möglichst kompletten Überblick über die wichtigsten Fakten moderner Au genheilkunde zu bieten.
1 071 kr
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The Asian beans and grams, the species of Vigna (subgenus Ceratotropis), include several legumes that are an essential component in the diets of a large proportion of Asia's population, and interest in these legumes is growing as ethnic cuisine spreads worldwide. However, this important group of legumes is little known compared to the closely related Phaseolus beans and soybean. That deficiency is addressed for the first time in this fully illustrated comprehensive conservation, genetics, taxonomic, and agricultural monograph on the genetic resources of the Asian Vigna. The book deals with the phylogeny of the group from the perspectives of morphological and molecular analyses, ex situ and in situ conservation, eco-geographical analyses, and research. In addition, morphological descriptions, keys, and eco-geographic details of each species in the group are provided. This genetic resources handbook and guide to the Asian Vigna will be a valuable reference for agriculturists, conservationists, taxonomists, other scientists, and students interested in the legumes and plant genetic resources.
Del 16 - Developments in Plant and Soil Sciences
Soil Organic Matter and Biological Activity
Häftad, Engelska, 2013
539 kr
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It has long been recognized that soil organic matter is the key to soil fertility. As a nutrient store it gradually provides essential elements which the soil cannot retain for long in inorganic form. It buffers growing plants against sudden changes in their chemical environment and preserves moisture in times of drought. It keeps the soil in a friable, easily penetrated physical condition, well-aerated and free draining, providing young seedlings with an excellent medium for growth. But it has another property, the nature and extent of which have been the subject of argu ment and controversy ever since scientists began to study the soil, and that is its ability to affect growth directly, other than by providing nutrient elements. Any one wishing to learn about these effects has been faced with a daunting mass of literature, some confusing, often contradictory, and spread through a multitude of journals. Individual aspects have been covered from time to time in reviews but there has obviously been a need for a modern authoritative text book dealing with the many facets of this subject, so the publication of this volume is timely. The editors and authors are all specialists in their fields, fully familiar with the com plex nature of soil organic matter and with the particular difficulties arising in any study of its properties. Where controversies exist they have presented all sides of the argument and have highlighted areas where further work is badly needed.