Download or read book The Effect of Structure on the Activity of the Hydroxyl Group in Alcohols written by Robert Sanderson Mulliken and published by . This book was released on 1917 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure Effect of Alcohols and Polyglycols on Bubble Rise Velocity written by Yue Tan and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Frothers are commonly used in mineral flotation processes to reduce bubble size, slow bubble rise, and stabilize froth. Frother chemistry (structure) plays an important role in determining these functions. In this thesis, over 50 surfactants (mainly from two frother families, alcohols and polyglycols) were investigated to determine the structure effect on bubble rise velocity. The structural variables were: alkyl chain length in alcohols and polyglycols, the number of propylene oxide (PO) and ethylene oxide (EO) groups in polyglycols and location of methyl branch and hydroxyl group in alcohols. The bubble rise velocity profile was determined over 350 cm in a water column. The concentration to reach minimum velocity at 300 cm (CMV) was estimated for each structure. A lower CMV means a structure is more effective in slowing bubble rise. The relationship between CMV and the structural variables and between CMV and HLB (hydrophile-lipophile balance) was investigated. Increasing alkyl chain length and number of PO or EO units decreases CMV. The hydroxyl group(s) at the terminal position is more effective in reducing CMV than the center position. The effect of methyl branch position is related to the position of the hydroxyl group (OH): The farther the methyl branch from the OH, the lower the CMV. The mechanism slowing bubble rise was related to surfactant surface activity and packing density and the consequent effect on surface tension gradient and surface viscosity. Linear relationships were found between log CMV and the structural variables and between log CMV and HLB that had a common slope for each surfactant family. Modified HLB group numbers to account for methyl branch and OH position in alcohols were derived in order to include the isomers in the relationship. Noting there were common trends between CMV and the critical coalescence concentration (CCC) linear log CCC vs. HLB relationships were shown using literature data. The mechanism apparently linking CMV and CCC is discussed. The CMV/HLB and CCC/HLB relationships are a step towards predicting frother functions from the structure." --
Download or read book Interpretation of Mass Spectra written by Fred Warren McLafferty (Chemiker, USA) and published by . This book was released on 1973 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reducing Agents in Colloidal Nanoparticle Synthesis written by Stefanos Mourdikoudis and published by Royal Society of Chemistry. This book was released on 2021-05-17 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will highlight the role of reducing agents in the chemical synthesis of nanoparticle systems.
Download or read book Structure activity Relationships of the Cannabinoids written by National Institute on Drug Abuse and published by . This book was released on 1987 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Immunoassay Technologies written by Sandeep K. Vashist and published by Academic Press. This book was released on 2018-01-02 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Immunoassay Technologies: Approaches, Performances, and Applications unravels the role of immunoassays in the biochemical sciences. During the last four decades, a wide range of immunoassays has been developed, ranging from the conventional enzyme-linked immunosorbent assays, to the smartphone-based point-of-care formats. The advances in rapid biochemical procedures, novel biosensing schemes, fully integrated lab-on-a-chip platforms, prolonged biomolecular storage strategies, device miniaturization and interfacing, and emerging smart system technologies equipped with personalized mobile healthcare tools are paving the way to next-generation immunoassays, and are all discussed in this comprehensive text. Immunoassays play a prominent role in clinical diagnostics as they are the eyes of healthcare professionals, helping them make informed clinical decisions via confirmed disease diagnosis, and thus enabling favorable health outcomes. The faster and reliable diagnosis of infections will further control their spread to uninfected persons. Similarly, immunoassays play a prominent role in veterinary diagnostics, food analysis, environmental monitoring, defense and security, and other bioanalytical settings. Therefore, they enable the detection of a plethora of analytes, which includes disease biomarkers, pathogens, drug impurities, environmental contaminants, allergens, food adulterants, drugs of abuse and various biomolecules. Provides a valuable increase of understanding of cellular and biomedical functions Gives the most updated resource in the field of immunoassays, providing the comprehensive details of various types of immunoassays that need to be performed in healthcare, and in industrial, environmental and other biochemical settings Discusses all multifarious aspects of immunoassays Describes the immunoassay formats, along with their principle of operation, characteristics, pros and cons, and potential biochemical and bioanalytical applications Provides extensive knowledge and guided insights as detailed by experienced, renowned experts and key opinion makers in the field of immunoassays
Download or read book Intelligent System Applied Materials and Control Technology written by J.H. Wu and published by Trans Tech Publications Ltd. This book was released on 2013-01-11 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected, peer reviewed papers from the 2013 International Conference on Intelligent System, Applied Materials and Control Technology (GSAMCT 2013), January 13-15, 2013, Taiyuan, Shanxi, China
Download or read book Biology and Engineering of Stem Cell Niches written by Ajaykumar Vishwakarma and published by Academic Press. This book was released on 2017-03-22 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology and Engineering of Stem Cell Niches covers a wide spectrum of research and current knowledge on embryonic and adult stem cell niches, focusing on the understanding of stem cell niche molecules and signaling mechanisms, including cell-cell/cell-matrix interactions. The book comprehensively reviews factors regulating stem cell behavior and the corresponding approaches for understanding the subsequent effect of providing the proper matrix molecules, mechanical cues, and/or chemical cues. It encompasses a variety of tools and techniques for developing biomaterials-based methods to model synthetic stem cell niches in vivo, or to enhance and direct stem cell fate in vitro. A final section of the book discusses stem cell niche bioengineering strategies and current advances in each tissue type. Includes the importance of Cell-Cell and Cell Matrix Interactions in each specific tissue and system Authored and edited by authorities in this emerging and multidisciplinary field Includes valuable links to 5-10 minute YouTube© author videos that describe main points
Download or read book Mechanisms of Atmospheric Oxidation of the Oxygenates written by Jack Calvert and published by OUP USA. This book was released on 2011-09-29 with total page 1634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepared by an international team of eminent atmospheric scientists, Mechanisms of Atmospheric Oxidation of the Oxygenates is an authoritative source of information on the role of oxygenates in the chemistry of the atmosphere. The oxygenates, including the many different alcohols, ethers, aldehydes, ketones, acids, esters, and nitrogen-atom containing oxygenates, are of special interest today due to their increased use as alternative fuels and fuel additives. This book describes the physical properties of oxygenates, as well as the chemical and photochemical parameters that determine their reaction pathways in the atmosphere. Quantitative descriptions of the pathways of the oxygenates from release or formation in the atmosphere to final products are provided, as is a comprehensive review and evaluation of the extensive kinetic literature on the atmospheric chemistry of the different oxygenates and their many halogen-atom substituted analogues. This book will be of interest to modelers of atmospheric chemistry, environmental scientists and engineers, and air quality planning agencies as a useful input for development of realistic modules designed to simulate the atmospheric chemistry of the oxygenates, their major oxidation products, and their influence on ozone and other trace gases within the troposhere.
Download or read book Studies in Natural Products Chemistry written by Atta-ur Rahman and published by Elsevier. This book was released on 1998-12-03 with total page 1365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural Products Chemistry continues to grow at an increasing pace and this growth is reflected in the present volume of Studies in Natural Products Chemistry, which is the 20th of this series. The first 20 volumes were largely devoted to structure and synthesis of various classes of natural products, irrespective of their bioactivity. Subsequent volumes of this series will however be devoted to the chemistry of bioactive natural products and will therefore a departure from the earlier volumes. The present volume contains contributions from a number of eminent scientists and covers interesting reviews on terpenes, alkaloids and other types of natural products reported from terrestrial and marine sources. Comprehensive indexes covering all the 20 volumes have been prepared which include a Cumulative General Subject Index along with more focused Cumulative Indices on Organic Synthesis, Pharmacological Activity and Biological Source. This comprehensive indexing of the volumes should make the entire series much more valuable and user-friendly.
Download or read book High Dilution Effects Physical and Biochemical Basis written by Nirmal C. Sukul and published by Springer Science & Business Media. This book was released on 2006-02-08 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the subject of high dilution effects is still a subject for debate, this volume provides evidence in support of effects from control clinical studies, clinical records from veteran physicians, controlled experiments on animals and plants, and in vitro tests without any organisms (Chapter II). An overview of the methods for preparing drugs at ultra high dilution is also provided as well as the basic principles of homeopathy, which has been alleviating human suffering through the use of these drugs for several hundred years (Chapter I). Chapter III provides physical basis of high dilutions as evidence from the NMR, IR, UV and fluorescence spectra of those drugs. Since water is used as the diluents media, the structure and dynamics of water polymers in relation to high dilution are discussed in order to facilitate easy comprehension of this physical aspect, the basic principles of spectroscopy are also described. Chapter IV focuses on the mechanism of action of potentized drugs in the living system, discussing the structure of the cell, the plasma membrane, the integral proteins on the membrane, the interaction between these proteins and high dilutions and the manifestations of the therapeutic effects of high dilutions. Some aspects, peculiar to homeopathy, such as the chief miasm psora, and the literalities and time modalities of symptoms and drug action are interpreted from a scientific perspective. Chapter IV ends with a brief discussion on water structures and the origin of life to show the natural evolution of high dilution effects. The book not only helps in understanding the physical basis of high dilutions and their mechanism of action in organisms but provides many new avenues of investigation into this interdisciplinary field of science.
Download or read book The British Medical Journal written by and published by . This book was released on 1915 with total page 1588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Psychopharmacology Bulletin written by and published by . This book was released on 1966 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pharmaceutical Chemistry E Book written by David G. Watson and published by Elsevier Health Sciences. This book was released on 2011-02-09 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book, from the editor of the highly successful Pharmaceutical Analysis, sets out to define the area of pharmaceutical chemistry as distinct from medicinal chemistry. It focuses less on prototypes of drugs that perhaps never came to market and more on the drugs currently in use. The emphasis in the book is on the physicochemical properties of drug molecules and, in so far as they are known, the way that these properties govern the interaction of the drug with its target. Important physicochemical properties include pKa and partition coefficient and the properties of the structural elements within the drug which provide interactions with the target via a range of intermolecular forces. The last fifteen years has seen a great advance in the knowledge of protein structures and a strong emphasis is given to the interaction of drugs with proteins which shape the majority of drug mechanisms. Features: Focus on intramolecular actions Mechanisms of action richly illustrated Self-assessment included Comprehensive chapters on vitamins and biotechnological products This new book, from the editor of the highly successful Pharmaceutical Analysis, sets out to define the area of pharmaceutical chemistry as distinct from medicinal chemistry. It focuses less on prototypes of drugs that perhaps never came to market and more on the drugs currently in use. The emphasis in the book is on the physicochemical properties of drug molecules and, in so far as they are known, the way that these properties govern the interaction of the drug with its target. Important physicochemical properties include pKa and partition coefficient and the properties of the structural elements within the drug which provide interactions with the target via a range of intermolecular forces. The last fifteen years has seen a great advance in the knowledge of protein structures and a strong emphasis is given to the interaction of drugs with proteins which shape the majority of drug mechanisms. Features: Focus on intramolecular actions Mechanisms of action richly illustrated Self-assessment included Comprehensive chapters on vitamins and biotechnological products
Download or read book Therapeutic Mushrooms for Diabetes Mellitus written by Uzma Azeem and published by CRC Press. This book was released on 2023-08-04 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book provides valuable insight into the role of mushrooms in the treatment of diabetes mellitus. Mushrooms are enriched with various bioactive constituents with antidiabetic efficacy such as polysaccharides, terpenes, sterols, etc. The extracts as well as bioactive constituents through different mechanisms exhibit antidiabetic action. Medicinal mushrooms such as Ganoderma lucidum, Innotus obliquus, Grifola frondosa, Phellinus species, etc. are considered in this volume for their beneficial qualities toward the mitigation of the disease. The volume considers mushroom powders, mushroom extracts, and their bioactive components for the management of diabetic syndrome. It presents various in vitro, in vivo, and clinical studies on lowering hyperglycemia and other diabetes associated with secondary abnormalities as well as provides information regarding mushroom-based antidiabetic market products.
Download or read book Journal of the American Medical Association written by American Medical Association and published by . This book was released on 1903 with total page 1676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes proceedings of the Association, papers read at the annual sessions, and list of current medical literature.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 2000 with total page 1840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
