Author: Carmen Gaidau
Publisher: Bentham Science Publishers
ISBN: 1608057437
Category : Science
Languages : en
Pages : 138
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Book Description
The chemistry of heterocomplex compounds is a fascinating field for experts in chemical synthesis and structural analysis, and for technologists specializing in leather processing. This volume describes the vast theoretical and practical possibilities of exploiting the action synergism of metals with different collagen cross-linking capacity. The possibility of reducing chromium content from leather tanning agents by replacing it with other tanning metals has significant environmental implications and minimum changes in terms of quality and production costs of natural leather, and is a viable alternative for a safe future. Applicative Chemistry of Tanning Metallic Heterocomplexes is a book dedicated to the synthesis and use of tanning metallic heterocomplexes in leather tanning as alternatives to tanning with basic chromium salts. Replacing chromium with other tanning metals is an innovative approach that exploits the possibility that a series of known disadvantages of tanning metals used individually be reduced by heterocomplexation. The synthesis mechanism of stable combinations of chromium with other tanning metals: aluminum, iron, titanium, or zirconium is based on the stoichiometry of oxidation-reduction reactions which enables a wide range of combinations, the premise for obtaining various properties by tanning and retanning natural leather. The volume is intended as a useful reference for researchers, chemical auxiliary producers, experts in natural leather processing who are looking for clean and efficient solutions for wastewater pollutants, sludge or solid wastes while striving to preserve the known characteristics of mineral tanned natural leather.
Author: Sadia Sultan
Publisher: BoD – Books on Demand
ISBN: 1839698780
Category : Medical
Languages : en
Pages : 138
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Book Description
One of the largest and most diverse kingdoms in eukaryotes is fungi, which consists of approximately 2.2–3.8 million species. This book provides readers with an in-depth understanding of fungi diversity and the role of fungi in the ecosystem. Chapters address such topics as fungi reproduction and pathology, fungal mycotoxicity, fungi mating mechanisms, and much more.
Author: Jennifer K Chen
Publisher: Springer
ISBN: 3319585037
Category : Medical
Languages : en
Pages : 578
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Book Description
This volume opens by providing a comprehensive overview of the use and regulation of metals in our society, metal properties, and available testing methodologies. Common and uncommon metal allergens and sources of exposure are then reviewed in depth, detailing allergic responses and paying special consideration to select patient populations. In the general population, the prevalence of metal allergy is high. Environmental sources of metal exposure include jewelry, clothing, electronic devices, coins, leather, diet, and occupational exposure. Metal allergy may result in allergic contact dermatitis and systemic contact dermatitis, as well as several less common manifestations. Further, metal allergy has been associated with device failure and/or dermatitis following implantation of medical devices and dental implants. As metals are ubiquitous, this book will be indispensable for a wide range of clinicians and investigators. This handy reference will meet the needs of all health professionals and investigators who are interested in metal allergy and its diagnosis and management.
Author: International Labour Office
Publisher: Mitchell Beazley
ISBN:
Category : Crafts & Hobbies
Languages : en
Pages : 252
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Book Description
Provides detailed technical and economic information on four different scales of production. Six alternative technologies are described, from fully mechanized 200-hides-per-day to a highly labour intensive two-hides per day project. Aimed at helping tanners in developing countries choose and operate tanning processes.
Author: Anne E. Osbourn
Publisher: Springer Science & Business Media
ISBN: 0387854983
Category : Science
Languages : en
Pages : 588
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Book Description
Plants produce a huge array of natural products (secondary metabolites). These compounds have important ecological functions, providing protection against attack by herbivores and microbes and serving as attractants for pollinators and seed-dispersing agents. They may also contribute to competition and invasiveness by suppressing the growth of neighboring plant species (a phenomenon known as allelopathy). Humans exploit natural products as sources of drugs, flavoring agents, fragrances and for a wide range of other applications. Rapid progress has been made in recent years in understanding natural product synthesis, regulation and function and the evolution of metabolic diversity. It is timely to bring this information together with contemporary advances in chemistry, plant biology, ecology, agronomy and human health to provide a comprehensive guide to plant-derived natural products. Plant-derived natural products: synthesis, function and application provides an informative and accessible overview of the different facets of the field, ranging from an introduction to the different classes of natural products through developments in natural product chemistry and biology to ecological interactions and the significance of plant-derived natural products for humans. In the final section of the book a series of chapters on new trends covers metabolic engineering, genome-wide approaches, the metabolic consequences of genetic modification, developments in traditional medicines and nutraceuticals, natural products as leads for drug discovery and novel non-food crops.
Author: M.-Z. Asfari
Publisher: Springer Science & Business Media
ISBN: 0306475227
Category : Science
Languages : en
Pages : 684
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Book Description
Calixarene chemistry, at the turn of the millennium, is a field approaching true maturity. In many areas, applications are real and important, and the arsenal of structures based on calixarenes provides tools effective in numerous areas of supramolecular chemistry. In this book, chapters contributed by a broad spectrum of international authors provide a variety of perspectives upon the progress and future of calixarene chemistry. Issues covered in depth include: Calixarene synthesis, with all its subtleties and sophistication. Forces at play in the inclusion of neutral and charged molecules by calixarenes. Theoretical analyses of calixarene properties. Dynamics and thermodynamics of calixarenes and their complexes. Nanocomposite construction based on calixarene aggregates. Calixarenes on surfaces. Analytical applications of calixarenes. Catalysis by calixarenes and their complexes. Resource recovery and waste treatment with calixarenes. New directions in calixarene chemistry. Hetero- and homo-calixarenes. Bioactive calixarenes. Coordination chemistry of calixarenes. Calixarenes in the solid state.
Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 2800
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Book Description
Author:
Publisher: John Wiley & Sons
ISBN: 3527616896
Category : Science
Languages : en
Pages : 355
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Book Description
Volume 6 in the well-establish series Advances in Electrochemical Science and Engineering covers - among others - such important topics as time dependent modulation techniques and computer modeling by continuum and non-continuum methods. As in all previous volumes, the editors have succeeded in selecting highly topical areas of electrochemical research and in presenting authors who are leaders in their fields. The result is a compelling set of reviews which serves equally well as an excellent and up-to-date source of information for experienced researchers active in the field as well as an introduction for newcomers. From reviews of previous volumes: 'This is an essential book for researchers in electrochemistry; it covers areas of both fundamental and practical importance, with reviews of high quality. The material is very well presented and the choice of topics reflects a balanced editorial policy that is welcomed.' The Analyst
Author: Thomas P. Fehlner
Publisher: Springer Science & Business Media
ISBN: 1489924590
Category : Science
Languages : en
Pages : 409
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Book Description
There is a certain fascination associated with words. The manipulation of strings of symbols according to mutually accepted rules allows a language to express history as well as to formulate challenges for the future. But language changes as old words are used in a new context and new words are created to describe changing situations. How many words has the computer revolution alone added to languages? "Inorganometallic" is a word you probably have never encountered before. It is one created from old words to express a new presence. A strange sounding word, it is also a term fraught with internal contradiction caused by the accepted meanings of its constituent parts. "In organic" is the name of a discipline of chemistry while "metallic" refers to a set of elements constituting a subsection of that discipline. Why then this Carrollian approach to entitling a set of serious academic papers? Organic, the acknowledged doyenne of chemistry, is distinguished from her brother, inorganic, by the prefix "in," i. e. , he gets everything not organic. Organometallic refers to compounds with carbon-metal bonds. It is simple! Inorganometallic is everything else, i. e. , compounds with noncarbon-metal element bonds. But why a new term? Is not inorganic sufficient? By virtue of training, limited time, resources, co-workers, and so on, chemists tend to work on a specific element class, on a particular compound type, or in a particular phase. Thus, one finds element-oriented chemists (e. g.
Author: Hans Ulrich Blaser
Publisher: John Wiley & Sons
ISBN: 3527605770
Category : Science
Languages : en
Pages : 480
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Book Description
Edited by two of the experts in the field, the central aim is to show organic chemists working in process development that enantioselective catalysis is suitable for the large-scale production of enantioenriched intermediates. In so doing, it is equally a source of information and inspiration for academic research, and, with its contribution by Noble prizewinner W. S. Knowles, will also heighten the status of industrial catalyst specialists working in the exciting field of enantioselective catalysis. Some 25 contributions from top industrial researchers around the world present case studies on the development of the widest possible range of large-scale enantioselective processes, featuring stereoselective production processes of fine-chemicals, agrochemicals and pharmaceuticals. Clearly structured according to the nature of the task, this handbook adopts a problem-driven approach such that readers can easily find how colleagues have dealt with a similar situation.
