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Elsevier Science

Instrumental Methods in Food and Beverage Analysis
1st Edition
Volume 39
D.L.B. Wetzel + 1 more
English
Advances in instrumentation and applied instrumental analysis methods have allowed scientists concerned with food and beverage quality, labeling, compliance, and safety to meet ever increasing analytical demands. Texts dealing with instrumental analysis alone are usually organized by the techniques without regard to applications. The biannual review issue of Analytical Chemistry under the topic of Food Analysis is organized by the analyte such as N and protein, carbohydrate, inorganics, enzymes, flavor and odor, color, lipids, and vitamins. Under 'flavor and odor' the subdivisions are not along the lines of the analyte but the matrix (e.g. wine, meat, dairy, fruit) in which the analyte is being determined. In "Instrumentation in Food and Beverage Analysis" the reader is referred to a list of 72 entries entitled "Instrumentation and Instrumental Techniques" among which molecular spectroscopy, chromatographic and other sophisticated separations in addition to hyphenated techniques such as GS-Mass spectrometry. A few of the entries appear under a chapter named for the technique. Most of the analytical techniques used for determination, separations and sample work prior to determination are treated in the context of an analytical method for a specific analyte in a particular food or beverage matrix with which the author has a professional familiarity, dedication, and authority. Since, in food analysis in particular, it is usually the food matrix that presents the research analytical chemist involved with method development the greatest challenge.
Catalysis and Automotive Pollution Control IV
1st Edition
Volume 116
N. Kruse + 2 more
English
In spite of the energy crises and the recession, there has been a global, explosive growth in the amount of motor vehicles. In the past 50 years, the amount has increased from 50 to 700 million vehicles. For economical reasons they will probably continue to be used for a considerable number of years, despite the poor yield of internal combustion engines resulting in the inevitable production of some gaseous pollutants. The subsequent increase of gaseous pollutants in our atmosphere caused by exhaust gas from automobiles has enhanced the problem of the elimination of these pollutants produced by internal combustion engines. Catalysis has proven to be the best solution to lower the content of exhaust gas in pollutants.As its predecessors, CAPoC4 proved to be a suitable platform for discussing technological improvements and developments along with future perspectives and challenges. In the light of new results and further legislative regulations, the following topics were intensely discussed: *low light-off behaviour based on improved catalysts and substrate formulations*efficie... adsorber systems for storage of hydrocarbon emissions*electrical... heated catalyst systems ahead the main catalyst or, alternatively, close coupled catalysts (at the manifold of the engine)• lean DeNOx catalysts allowing for decomposition of NOx in the oxygen-rich exhaust of direct injection gasoline engines and high speed injection diesel engines or, alternatively, NOx trapping/reduction in a hybrid approach* collection and destruction of dry particulates or soot.There is no doubt that clean vehicle technology is a vital part of improving air quality. Challenges remain and call for technological answers. Catalytic air pollution control is still an area providing a considerable incentive for innovative work.
Brain Function in Hot Environment
1st Edition
Volume 115
H.S. Sharma + 1 more
English
Although problems relating to hyperthermia and heat stroke are well known since biblical times, until now the influence of heat or hyperthermia on the central nervous system has not been well documented. This book is the first to describe in detail the influences of hyperthermia on the CNS using the modern technology which has developed in the last 50 years in neuroscience. Hyperthermia is a common feature during fever, radiotherapy of tumours and exercise in hot environment. Statistically, hyperthermia and/or heat stroke is currently recognised as the third largest killer in America after head and spinal trauma and heart failure. However, studies on the mechanisms of heat-induced death or damage to the CNS are still lacking. This book aims to define the probable mechanisms of brain damage in hyperthermia which could be responsible for death of victims. Rational therapeutic measures based on the experimental findings are also described.The most important new aspect of the CNS function in hyperthermia suggests that the basic mechanisms of cell injury appears to be quite similar in nature. The severity of cell injury depends chiefly on the magnitude of the primary insult. Thus, it appears that hyperthermic brain injury is similar to the situation of trauma, ischemia and infarction. Baring this in mind, this book describes suitable models for hyperthermic injury which could be highly relevant to the study of mechanisms of cell injury in the CNS and to test various neuroprotective agents which may be found useful in the treatment of various traumatic, ischemic or degenerative diseases.In general the book will increase our basic understanding of brain function in hot environment and increase our awareness regarding heat as an important factor influencing our brain function at a time when global warming is described as a potential hazard to the biological system.This book is a refereed collection of 24 chapters written by several eminent scientists from different disciplines involved in basic and applied research in the CNS from various parts of the globe. It is hoped that the new aspects of brain function in hot environment compiled in this volume will provide an up-to-date ready reference which may serve as a strong scientific stimulus to many workers in this emerging field of neuroscience. Stimulating the exploration of the subject with novel ideas and/or experimental and clinical approaches in the future.
Data Analysis and Signal Processing in Chromatography
1st Edition
Volume 21
A. Felinger
English
This book gives an overview of the numerical data analysis and signal treatment techniques that are used in chromatography and related separation techniques. Emphasis is given to the description of the symmetrical and asymmetrical chromatographic peak shape models. Both theoretical and empirical models are discussed.The fundamentals of data acquisition, types and effect of baseline noise, and methods of improving the signal-to-noise ratio (either in time or in frequency and wavelet domain) are thoroughly discussed. Resolution enhancement techniques, such as curve fitting, deconvolution by Fourier and wavelet transforms, iterative deconvolution, Kalman filtering and multivariate methods of curve resolution are all discussed with several chromatographic examples. Quantitative analysis by peak area of peak height measurement, the precision and accuracy of the quantitation of stand-alone or overlapping and symmetrical or asymmetrical peaks are treated. In a separate chapter, guidelines are given for the use of transform techniques for the analysis of chromatograms. A statistical description of peak overlap is given in the final chapters. Since the concept of resolution has to be reconsidered when one separates complex mixtures, the problem of resolution and overlap is quantitatively discussed by means of statistical methods, and by using Fourier analysis of the complex chromatogram.Feature... of this book• The ultimate source of numerical techniques to enhance chromatographic data• Gives a detailed description of signal and resolution enhancement techniques in a manner applicable for enhancing not only chromatography, but also spectroscopic and other analytical signals• The first book with a thorough overview of the statistics of peak overlap.This is the first volume to encompass both the simple and more sophisticated methods for the numerical treatment of chromatograms. It is, therefore, the fundamental resource of numerical analysis methods for every analyst.
PVT and Phase Behaviour Of Petroleum Reservoir Fluids
1st Edition
Volume 47
Ali Danesh
English
This book on PVT and Phase Behaviour Of Petroleum Reservoir Fluids is volume 47 in the Developments in Petroleum Science series. The chapters in the book are: Phase Behaviour Fundamentals, PVT Tests and Correlations, Phase Equilibria, Equations of State, Phase Behaviour Calculations, Fluid Characterisation, Gas Injection, Interfacial Tension, and Application in Reservoir Simulation.
Proteins at Liquid Interfaces
1st Edition
Volume 7
D. Möbius + 1 more
English
The interfacial behaviour of surfactants and proteins, and their mixtures, is of importance in a wide range of areas such as food technology, detergency, cosmetics, coating processes, biomedicine, pharmacy and biotechnology. Methods such as surface and interfacial tension measurements and interfacial dilation and shear rheology characterise the relationships between these interfacial properties and the complex behaviour of foams and emulsions is established. Recently-developed experimental techniques, such as FRAP which enable the measurement of molecular mobility in adsorption layers, are covered in this volume. The development of theories to describe the thermodynamic surface state or the exchange of matter for proteins and protein/surfactant mixtures is also described.Features of this book:• Reflects the state-of-the-art research and application of protein interfacial layers rather than a snapshot of only some recent developments.• Emphasis is placed on experimental details as well as recent theoretical developments.• New experimental techniques applied to protein interfacial layers are described, such as FRAP or ADSA, or rheological methods to determine the mechanical behaviour of protein-modified interfaces.• A large number of practical applications, ranging from emulsions relevant in food technology for medical problems such as lung surfactants, to the characterisation of foams intrinsic to beer and champagne production.The book will be of interest to research and university institutes dedicated to interfacial studies in chemistry, biology, pharmacy, medicine and food engineering. Industrial departments for research and technology in food industry, pharmacy, medicine and brewery research will also find this volume of value.
Oxyradicals in Medical Biology
1st Edition
Volume 25
J.M. McCord
English
The rapid expansion of the area of free radical biology in the last 25 years has occurred within a framework of assumptions and preconceived notions that has at times directed the course of this movement. The most dominant of these notions has been the view that free radical production is without exception a bad thing, and that the more efficient our elimination of these toxic substances, the better off we will be. The very important observation by Bernard Babior and colleagues in 1973 that activated phagocytes produce superoxide in order to kill micro organisms, served to illustrate that constructive roles are possible for free radicals. For many in the field, however, this merely underscored the deadly nature of oxygen-derived radicals, both from the microbe's point of view and from the host's as well. (Phagocyte-produced superoxide is responsible in part for the tissue injury manifested as inflammation. See Harris and Granger, Chapter 5, and Leff, Hybertson and Repine, Chapter 6.)Mother Nature, however, has a penchant for being able to make a silk purse from a sow's ear. If one is dealt a bad hand, one must simply make the best of it. After two decades of focusing on the destructive side of free radicals, the last few years have begun to reveal a new and finer perspective on free radical metabolism - a role in regulation of cellular function (see Schulze-Osthoff and Baeuerle, Chapter 2). Evidence from a number of sources suggests that an increase in the oxidative status of cell encourages that cell to grow and divide. Increasing the expression of mangnese superoxide dismutase can suppress the malignant phenotype of melanon cells (see Oberley and Oberley, Chapter 3). Oxidative stress beyond a certain poitosis (from the Greek, literally "to fall apart"). Is this suicide response an evolutionary fail-safe device to curtail tumorogenesis? Does oxidative stress-induced apoptosis account for the loss of immune cells in AIDS (see Flores and McCor Chapter 4)?This volume attempts to present the spectrum of roles, both good and bad played by active oxygen species as understood at this point in the evolution of this field of free radical biology.
Rheology: An Historical Perspective
1st Edition
Volume 7
R.I. Tanner + 1 more
English
The science of rheology remains a mystery to most people, even to some scientists. Some respectable dictionaries have been quite cavalier in their attitude to the science, the small Collins Gem dictionary, for example, being quite happy to inform us that a Rhea is an three-toed South American ostrich, whilst at the same time offering no definition of rheology. This maybe due to the fact that the science is interdisciplinary and does not fit well into any one of the historical disciplines.This book contains an in-depth study of the history of rheology, beginning with the statements of Heraclitus, Confucius and the prophetess Deborah. It also emphasises the distinctive contributions of Newton, Hooke, Boltzmann, Maxwell, Kelvin and others, and culminates in the flourishing activity in the second half of this century.Features of this book:• Is the only book on the subject• Prevents the rediscovery of results already made• Will educate newcomers to the field to the rich heritage in even a relatively recent science like rheology.The book will be invaluable for science and scientific history libraries and will also be of interest to rheologists, and scientists working in the polymer processing, food, lubrication, detergent and similar industries.
Microbiological Analysis of Food and Water
Guidelines for Quality Assurance
1st Edition
N.F. Lightfoot + 1 more
English
With the help of leading Quality Assurance (QA) and Quality Control (QC) microbiology specialists in Europe, a complete set of guidelines on how to start and implement a quality system in a microbiological laboratory has been prepared, supported by the European Commission through the Measurement and Testing Programme. The working group included food and water microbiologists from various testing laboratories, universities and industry, as well as statisticians and QA and QC specialists in chemistry.This book contains the outcome of their work. It has been written with the express objective of using simple but accurate wording so as to be accessible to all microbiology laboratory staff. To facilitate reading, the more specialized items, in particular some statistical treatments, have been added as an annex to the book. All QA and QC tools mentioned within these guidelines have been developed and applied by the authors in their own laboratories. All aspects dealing with reference materials and interlaboratory studies have been taken in a large part from the projects conducted within the BCR and Measurement and Testing Programmes of the European Commission.With so many different quality control procedures, their introduction in a laboratory would appear to be a formidable task. The authors recognize that each laboratory manager will choose the most appropriate procedures, depending on the type and size of the laboratory in question. Accreditation bodies will not expect the introduction of all measures, only those that are appropriate for a particular laboratory.Features of this book:• Gives all quality assurance and control measures to be taken, from sampling to expression of results• Provides practical aspects of quality control to be applied both for the analyst and top management• Describes the use of reference materials for statistical control of methods and use of certified reference materials (including statistical tools).
Geoenvironmental Engineering
1st Edition
Volume 82
A.M.O. Mohamed + 1 more
English
The new social and economic era calls for integration of ecology and economy in a system of cause and effect. The central element in this shift is sustainable development. Fundamental to the achievement of sustainable development is the requirement for environmentally responsible waste management and restoration of the environment. Solutions to the complex problems confronted by waste management and environmental restoration industry are currently handled by the geoenvironmental engineering profession that needs a good background in soil biology, chemistry, mechanics, mineralogy, and physics. In recognition of this need, this book summarizes relevant aspects of various soil physics, mineralogy, and chemistry as well as the chemistry of pollutants. This treatment will provide sufficient background to students and practicing engineers to enable them to think about how to approach waste management and environmental restoration problems.

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