Xem 1-20 trên 149 kết quả Covering chemical
  • The mode of action of pesticides is extremely fascinating because the subject covers so many fields of biology and chemistry and has many practical implications. All disciplines of biology have developed greatly since 1,1,1-trichloro- di-(4-chlorophenyl)ethane — better known as DDT — and the other synthetic pesticides were introduced just after the Second World War.

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  • Comprehensive manual embracing essentially all the classical and modern areas of chemical kinetics. Provides details of modern applications in chemistry, technology and biochemistry. Special sections of the book treat subjects not covered sufficiently in other manuals, including: modern methods of experimental determination of rate constants of reactions including laser pico- and femtochemistry, magnetochemistry, and ESR; and descriptions of advanced theories of elementary chemical processes.

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  • This book provides an insider ’ s view of the status of the fi ne chemical industry, as well as its outlook. It covers all aspects of this dynamic industry, with all of its stakeholders in mind, viz. employees, customers, suppliers, investors, students and educators, media representatives, neighboring communities, public offi cials, and anyone else who has an interest in this segment of the chemical industry. Safety, health, environmental, and regulatory issues are discussed only briefl y, as the related subjects are extensively covered in the specialized literature....

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  • Scale-up in Chemical Engineering covering the important task of the scale-up of processes from the laboratory to the production scale, this easily comprehensible and transparent book is divided into two sections. The second part presents the individual basic operations and covers the fields of mechanical, thermal, and chemical process engineering with respect to dimensional analysis and scale-up.

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  • Despite the advances in the development of new drugs, a drug may never reach the target organ, or it may be difficult to achieve the necessary level of drug in the body. Large doses can result in serious side effects, and can harm normal cells and organs as well as diseased cells. Hence controlled release and the targeting of delivery systems must evolve in parallel to drug research.

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  • The electrophoretic deposition (EPD) method was adopted for a fabrication of nanocomposite layers composed of ZnO particles covered by the polythiopene shell in a reduced state. This composite was prepared by oxidative polymerization of thiophene monomer with iron (III) chloride as a catalyst in the presence of ZnO particles. After polymerization, polythiophene in oxidized form was reduced by the extraction in methanol. Electrochemical properties of the obtained composite were measured by cyclic voltammetry and electrochemical impedance spectroscopy.

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  • Quantum Mechanics and the Hydrogen Atom, Many-Electron Atoms and Chemical Bonding, Molecular Orbitals, Spectroscopy, and Chemical Bonding,... as the main contents of the lesson lecture 9 "Tentative material to be covered for Exam 2". Invite you to consult the lesson for more documents serving the academic needs and research.

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  • Explosives and propellants contain considerable chemical energy that can be converted into rapid expansion. In contrast to the simple burning of a fuel, explosives and propellants are self-contained and do not need an external supply of oxygen via air. Since their energy content inherently creates the risk of accidental triggering of the explosive reaction, the correct synthesis, formulation, and handling during production and use are of utmost importance for safety, necessitating specialist knowledge on energetic materials, their characteristics, handling and applications.

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  • Automated Continuous Process Control pulls together–in one compact and practical volume–the essentials for understanding, designing, and operating process control systems. This comprehensive guide covers the major elements of process control in a well-defined and ordered framework. Concepts are clearly presented, with minimal reliance on mathematical equations and strong emphasis on practical, real-life examples.

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  • Chemistry: A Maths Workbook – Part 1, Part 2 and Part 3 workbooks are intended for first year undergraduate Chemists. They are split into three in order to reduce file size and make handling on a laptop easier. Part 1 covers the first 8 weeks of semester 1; Part 2 the remainder of semester 1 and the beginning of semester 2; and Part 3 the rest of semester 2. This workbook is not a textbook! Use your Chemistry and Maths textbook to find out the details about the area covered. People will not really understand something, including Maths, until they can...

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  • The successive editions of Principles and Practice of Analytical Chemistry have kept pace with the associated developments in the subject. Significant changes encompass strengthening of the coverage of data handling, together with new material covering rapidly developing subject areas of molecular spectrometry, atomic spectrometry, and separation techniques. Answers to the self- learning problems and exercises are also included. All sections of the book have been fully reviewed and updated as appropriate. ...

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  • The Gale Encyclopedia of Alternative Medicine (GEAM) is a one-stop source for alternative medical information that covers complementary therapies, herbs and remedies, and common medical diseases and conditions. It avoids medical jargon when possible, making it easier for the layperson to use. The Gale Encyclopedia of Alternative Medicine presents authoritative, balanced information and is more comprehensive than single-volume family medical guides.

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  • Covers important methods and recent developments in food-aroma analysis. The text discusses the problem-solving capabilities of analytical methods for food flavours and aromas, showing how to select appropriate techniques for resolving the problems of major food trends. It includes a treatment of off-flavour and malodor analyses and new polymer sensor array instruments.

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  • Petroleum mixtures consist primarily of relatively unreactive complex hydrocarbons covering a wide boiling range. Such mixtures are difficult to separate by most analytical techniques. Therefore, the petroleum industry has for many years played a leading role in the development of chromatographic methods of analysis. Since the last book specifically concerned with chromatographic analysis of petroleum appeared 15 years ago, numerous advances have been made including developments in liquid and supercritical fluid chromatography, ...

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  • Pharmaceutical products covered in the Pharmaceutical Zero-for-Zero Initiative can be imported either as bulk active ingredients or in dosage forms that can be packaged for retail sale. Products in dosage form are generally classified under chapter 30 of the HTS, where most of the subheadings are duty-free. Many of the bulk pharmaceutical active ingredients and chemical intermediates are classified under HTS subheadings that also contain non-pharmaceutical products and have rates of duty ranging from 0 to 6.5 percent ad valorem.

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  • This book is intended for students who are preparing for careers in health fields such as nursing, physical therapy, podiatry, medical technology, agricultural science, public health, and nutrition. The chemistry courses taken by these students typically include material covered in general chemistry, organic chemistry, and biochemistry, compressed into a 1-year period. Because of this broad requirement, many students feel overwhelmed. To help them understand and assimilate so much diverse material, we offer the outline of these topics presented in the text that follows.

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  • Soil is a biogeochemically dynamic natural resource that supports all critical components that comprise terrestrial ecosystems. It has been called Earth’s living skin. On its June 11, 2004, cover, Science declared soils to be “the final frontier.” The growing awareness that soil provides a variety of ecosystem services beyond food production has attracted interest in soil from nonsoil scientists.

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  • In the last two decades, the discovery of signaling roles of ROS demonstrated their universal use in biological systems. The third section of this book, entitled “Reactive Species as Signaling Molecules” contains the chapters covering clear ROS-based signaling in yeasts and plants. It is not strange that many authors provide readers with the information gained from yeasts. This is a very popular classic eukaryotic model system to disclose molecular mechanisms of cellular responses to oxidative stress (Lushchak, 2010). In the first chapter of this book section, M. A.

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  • Chemometric Techniques for Quantitative Analysis shows how to produce and use quantitative analytical calibrations in a laboratory or production environment following a variety of methods, how to estimate the time and resources needed to develop analytical calibrations, and how to employ the quantitative software provided with a wide range of instruments and commercial software packages. Among several, this bestselling volume covers basic and classical approaches, component regression; PCR in action; partial least squares; PLS in action.

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  • Hydrogen, as an energy carrier, is widely regarded as a potential cost effective, renewable, and clean energy alternative to petroleum in order to mitigate energy shortage and global climate warming issues that the world is currently facing. However, storage of hydrogen is a substantial challenge, especially for applications in vehicles with fuel cells that use proton-exchange membranes (PEMs). Therefore, scientific community has started focusing their research activities on developing advanced hydrogen storage materials through nanotechnology. ...

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