Download or read book Canadian Journal of Botany written by and published by . This book was released on 1974-07 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agrochimica written by International Atomic Energy Agency and published by . This book was released on 1977 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic matter and soil productivity; Turnover of plant residues; Mineralization of organic compounds; Dynamics of organic forms of nitrogen; Nitrogen economy; Biodegradation of organic matter; Biochemical transformation of organic matter; Bitumens in soil organic matter; Characterization of humic acids; Carbon dating; Modern techniques and their implact on soil organic matter research; Sludge; Soil organic matter components and plant metabolism; Interaction between agrochemicals and organic matter; Peat.

Download or read book The Painter s Eye written by Henry James and published by Univ of Wisconsin Press. This book was released on 1989 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Between 1868 and 1897 Henry James wrote a number of short essays and reviews of artists and art collections; these essays were published in magazines such as Atlantic Monthly and Harper's Weekly and in newspapers such as the New York Tribune. They included James's comments on Ruskin, Turner, Whistler, Sargent, and the Impressionists, among many others. Thirty of these essays were collected and first published in a modern edition in 1956, accompanied by John Sweeney's introduction, which sketches James's interest in the visual arts over a period of years, focusing on the ways in which painting and painters entered his work as subjects. Susan Griffin's new forward places James's observations in a contemporary context. Some of the novelist's judgements will seem wrong to today's readers: he was critical of the Impressionists, for example. But all of these essays bear the stamp of James's critical intelligence, and they tell us a great deal about his development as a writer during those years.

Download or read book Nutrient Requirements of Nonhuman Primates written by National Research Council and published by National Academies Press. This book was released on 2003-02-01 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new release presents the wealth of information gleaned about nonhuman primates nutrition since the previous edition was published in 1978. With expanded coverage of natural dietary habits, gastrointestinal anatomy and physiology, and the nutrient needs of species that have been difficult to maintain in captivity, it explores the impact on nutrition of physiological and life-stage considerations: infancy, weaning, immune function, obesity, aging, and more. The committee also discusses issues of environmental enrichment such as opportunities for foraging. Based on the world's scientific literature and input from authoritative sources, the book provides best estimates of nutrient requirements. The volume covers requirements for energy: carbohydrates, including the role of dietary fiber; proteins and amino acids; fats and fatty acids; minerals, fat-soluble and water-soluble vitamins; and water. The book also analyzes the composition of important foods and feed ingredients and offers guidelines on feed processing and diet formulation.

Download or read book The Beast in the Jungle written by Henry James and published by Xist Publishing. This book was released on 2015-09-04 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Henry James’ Greatest Short Fiction Achievement “What had the man had, to make him by the loss of it so bleed and yet live? Something—and this reached him with a pang—that he, John Marcher, hadn’t; the proof of which was precisely John Marcher’s arid end. No passion had ever touched him, for this was what passion meant; he had survived and maundered and pined, but where had been his deep ravage?... The escape would have been to love her; then, then he would have lived. ” - Henry James, The Beast in the Jungle and Other Stories Like a beast in the jungle, protagonist John Marcher waits for some catastrophic event to happen letting life and love pass by. Eventually, he discovers that tragedy has already occurred: nobody can give his wasted time back. The other two stories, ‘The Jolly Corner’ and ‘The Altar of the Dead’ are another great examples of Henry James’ wonderful craft and knowledge of the human soul. Xist Publishing is a digital-first publisher. Xist Publishing creates books for the touchscreen generation and is dedicated to helping everyone develop a lifetime love of reading, no matter what form it takes

Download or read book CRC Handbook of Chromatography written by Kumar D. Mukherjee and published by CRC Press. This book was released on 1993-05-06 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Chromatography: Analysis of Lipids provides a valuable review of state-of-the-art applications of chromatographic techniques (TLC, GC, HPLC) and other analytical techniques. Much of this volume is devoted to applications of HPLC (including supercritical fluid chromatography) in the analysis of lipids such as fatty acids, oxygenated fatty acids, enantiomeric acyl- and alkylglycerols, and lipoproteins. The handbook also provides extensive coverage of applications of combinations of various chromatographic techniques used in the analysis of ozonides, anacardic acids, glycerophospholipids, products of lipolysis, artifacts and contaminants in edible fats, acylated proteins, non-caloric lipids, lipophilic vitamins, acyl-Coenzyme A thioesters, dolichols, mycolic acids, technical fats and fat products, and liposomes. Handbook of Chromatography: Analysis of Lipids will be a useful reference for oil chemists, biochemists, fat science technologists, and other scientists involved in lipid research.

Download or read book Lipid Chromatographic Analysis written by Takayuki Shibamoto and published by CRC Press. This book was released on 1993-12-14 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on state-of-the-art gas chromatography (GC) and high-performance liquid chromatography, this guide discusses the theories behind, and applications of, the latest developments in chromatographic techniques - assessing the strengths and limitations of each methodology.;Presenting many detection methods for the first time, Lipid Chromatographic Analysis: provides a review of conventional column and thin-layer chromatography; examines a new GC technique to detect plasmalogen phospholipids; outlines a supercritical fluid chromatography for lipids; details the first systematic description of a microanalytical procedure for cholesterol and related compounds; explains a GC analysis of lipid breakdown products for monitoring biological processes such as ageing, carcinogenesis and mutagenesis; and describes techniques that allow for the simultaneous analysis of non-polar and polar lipids.

Download or read book Principles and Applications of Gas Chromatography in Food Analysis written by Michael H. Gordon and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: The food analyst plays an important role in modern society. Stricter control over additives in food and concern about the effects of contamination of food by industrial and agricultural chemicals are among the developments which are leading to an increasing emphasis on detailed and accurate analysis of food. However. analysis of food is required for many reasons, including detection of toxic components, monitoring legislation, detecting adulteration, formulation of controlled diets, controlling formulation during product development and detecting changes in food during storage and processing. Foods comprise a complex mixture of components and food analysis requires efficient methods of separation with high sensitivity or specificity of detection. Although many food components are involatile or thermally labile and therefore not suitable for analysis by gas chromatography, other components are volatile and this technique is the preferred analytical method. Developments in methods of derivati zation, injector design and column technology have also extended the applicability of gas chromatography to the analysis of relatively involatile compounds.

Download or read book Lipides et nutrition humaine written by Germain Brisson and published by Presses Université Laval. This book was released on 1982 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantitative Gas Chromatography for Laboratory Analyses and On Line Process Control written by G. Guiochon and published by Elsevier. This book was released on 1988-06-01 with total page 811 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is an invaluable new book on quantitative gas chromatography which explains how the method can - or should - be used for accurate and precise analysis. Gas chromatography is firmly established as one of the few major methods for the quantitative analysis of complex mixtures. It is fast, accurate and inexpensive, with a broad range of applications. It has however become very complex and involved: over 200 stationary phases, more than 10 detector principles and several very different column types are available from among the catalogs of over 100 manufacturers and major retailers. The progressive changes in the nature of gas chromatography have created new needs for information which are not satisfied by the literature presently available.This book provides a complete discussion of all the problems involved in the achievement of quantitative analysis by gas chromatography, whether in the research laboratory, in the routine analysis laboratory or in process control. For this reason the presentation of theoretical concepts has been limited to the essential, while extensive explanations have been devoted to the various steps involved in the derivation of precise and accurate data. This starts with the selection of the instrumentation and column, continues with the choice of optimum experimental conditions, then calibration and ends with the use of correct procedures for data acquisition and calculations. Finally, there is almost always a way to reduce errors and an entire chapter deals with this single issue. Numerous relevant examples are presented.The first part of the book presents the theoretical background, simple enough to be understood by all analytical chemists, but still complete and up-to-date. It discusses the problems of flow dynamics, retention and band broadening. The changes in band profile associated with column overloading are explained without much recourse to mathematics. The second part describes the gas chromatograph and discusses the properties of each of its parts: gas flow and pressure controller sampling system, oven, column switching valves, detectors. The different implementations, their advantages and drawbacks are discussed and compared. In addition, three chapters present packed column technology, open tubular column technology and some sophisticated new phase systems, respectively. The new phase systems described use adsorbents, modified by coating or grafting organic phase, and carrier gases containing vapors which are sorbed by the stationary phase and modify it, such as steam. The third part discusses the applications in qualitative and quantitative analysis. Calibration, peak integration, sources of errors arising from the various parts of the instrument as well as from the measurement process itself are carefully described in four detailed chapters. Methods to carry out accurate and precise analysis are presented. A last chapter is devoted to process control analysis and gives a number of detailed examples of applications. A lexicon explaining the most important chromatographic terms and a detailed index complete the book.This is a book which no chemical analyst should be without. It should be on the library shelf of all universities, instrument companies and any laboratory and plant where gas chromatography is used.

Download or read book Combinaisons de la glycerine avec les acides et reproduction artificielle des corps gras neutres written by Marcellin Berthelot and published by . This book was released on 1854 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recherches chimiques sur les corps gras d origine animale written by Michel E. Chevreul and published by . This book was released on 1823 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analytical Gas Chromatography written by Walter Jennings and published by Academic Press. This book was released on 1997-09-25 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas chromatography remains the world's most widely used analytical technique, yet the expertise of a large proportion of chromatographers lies in other fields. Many users have little real knowledge of the variablesin the chromatographic process, the interaction between those variables, how they are best controlled, how the quality of their analytical results could be improved, and how analysis times can be shortened to facilitate the generation of a greater numberof more reliable results on the same equipment. An analyst with a more comprehensive understanding of chromatographic principles and practice, however, can often improve the quality of the data generated, reduce the analytical time, and forestall the needto purchase an additional chromatograph or another mass spectrometer. The Second Edition of Analytical Gas Chromatography is extensively revised with selected areas expanded and many new explanations and figures. The section on sample injection has been updated to include newer concepts of split, splitless, hot and cold on-column, programmed temperature vaporization, and large volume injections. Coverage of stationary phases now includes discussion, applications, and rationale of the increased thermal and oxidative resistance of the newly designed silarylenepolysiloxane polymers. Conventional and"extended range"polyethylene glycol stationary phases are examined from the viewpoints of temperature range and retention index reliabilities, and the chapter on"Variables"has been completely rewritten. The ways in which carrier gas velocity influences chromatographic performance is considered in detail, and includes what may be the first rational explanation of the seemingly anomalous effects that temperature exercises on gas viscosity (and gas flow). The practical effects that these changes cause to the chromatography is examined in pressure-, flow-, and"EPC-"regulated systems."Column Selection, Installation, and Use"has been completely rewritten as well. The accuracy of theVan Deemter plots has been greatly enhanced; a new program corrects for the first time for the changes in gas density and diffusion that occur during the chromatographic process because of solute progression through the pressure drop of the column. A new section has also been added on meeting thespecial requirements of columns destined for mass spectral analysis. The chapter on"Special Applications"has been expanded to include considerations of"selectivity tuning,"of fast analysis, and the section of Applications has been thoroughly updated and expanded. - Incorporates nearly 60% new material - Covers the newest concepts and materials for sample injection and stationary phases - Presents detailed consideration of the influence of carrier gas velocity on practical aspects of chromatographic performance - Contains a chapter on "Special Analytical Techniques" which includes consideration of selectivity tuning and fast analysis - Provides a new section addressing the special requirements of columns to be used in mass spectral analysis - Includes an improved program that greatly enhances the accuracy of the Van Deemter plots by more accurately depicting localized chromatographic conditions at each point in the column

Download or read book Advanced Gas Chromatography in Food Analysis written by Peter Q Tranchida and published by Royal Society of Chemistry. This book was released on 2019-10-30 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas chromatography is widely used in applications involving food analysis. Typical applications pertain to the quantitative and/or qualitative analysis of food composition, natural products, food additives, and flavour and aroma components. Providing an up-to-date look at the significant advances in the technology, this book includes details on novel sample preparation processes; conventional, high-speed multidimensional gas chromatography systems, including preparative instrumentation; gas chromatography–olfactometry principles; and, finally, chemometrics principles and applications in food analysis. Aimed at providing the food researcher or analyst with detailed analytical information related to advanced gas chromatography technologies, this book is suitable for professionals and postgraduate students learning about the technique in the food industry and research.

Download or read book Manuel pratique de chromatographie en phase gazeuse publi sous la direction de Jean Tranchant written by Jean Tranchant and published by . This book was released on 1968 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applications of Gas Chromatography written by Reza Davarnejad and published by BoD – Books on Demand. This book was released on 2012-03-07 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: This valuable book aims to provide a connection between various chromatography techniques and different processes. Authors applied these techniques in supercritical technology, medical, environmental, physique and chemical processes. Most of them prepared mathematical support (such as correlation) for their original results obtained from the chromatography techniques. Since chromatography techniques (such as GC, HPLC

Download or read book Gas Chromatography written by Bekir Salih and published by BoD – Books on Demand. This book was released on 2012-03-09 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas Chromatography involves the study of various vaporizable molecules in chemistry and the other related research fields. This analytical method has a number of features and advantages that make it an extremely valuable tool for the identification, quantification and structural elucidation of organic molecules. This book provides detailed gas chromatography information to applications of biochemicals, narcotics and essential oils. The details of the applications were briefly handled by the authors to increase their comprehensibility and feasibility. This guide should be certainly valuable to the novice, as well as to the experienced gas chromatography user who may not have the enough experience about the specific applications covered in this book. We believe this book will prove useful in most laboratories where modern gas chromatography is practiced.