Download or read book The Effect of Low Silver written by United States. Congress. House. Committee on Coinage, Weights, and Measures and published by . This book was released on 1932 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Low Silver Hearings on H Res 72 MAr 7 April 15 1932 written by United States. Congress. House. Committee on coinage, weights & measures and published by . This book was released on 1932 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Low Silver written by United States Congress House Committee on Coinage, Weights, and Measures and published by . This book was released on 1932 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Low Silver written by United States. Congress. House. Committee on Coinage, Weights, and Measures and published by . This book was released on 1932 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Low Silver Hearings on H Res 72 MAr 7 April 15 1932 written by United States. Congress. House. Committee on coinage, weights & measures and published by . This book was released on 1932 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silver Nanoparticles written by Khan Maaz and published by . This book was released on 2018-07 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silver Yield from Copper Ores and the Effects of 64 64 cent Silver on the Value of Copper Ores Produced in the United States written by Elmer Walter Pehrson and published by . This book was released on 1934 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silver Nanoparticles in the Environment written by Jingfu Liu and published by Springer. This book was released on 2015-04-02 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book covers the environmental issues concerning silver nanoparticles (AgNPs). Following an introduction to the history, properties and applications, the environmental concerns of AgNPs is discussed. In the second chapter, the separation, characterization and quantification of AgNPs in environment samples are described in detail. In the remaining parts of the book, the authors focus on the environmental processes and effects of AgNPs, with chapters on the pathway into environment, fate and transport, toxicological effects and mechanisms, as well as the environmental bioeffects and safety-assessment of AgNPs in the environment. This book is designed to describe current understanding of the environmental aspects of AgNPs. It provides a valuable resource to students and researchers in environmental science and technology, nanotechnology, toxicology, materials science and ecology; as well as to professionals involved in the production and consumption of AgNPs in various areas including catalysis, food products, textiles/fabrics, and medical products and devices. Jingfu Liu and Guibin Jiang are professors at State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences.
Download or read book Microbes and Microbial Technology written by Iqbal Ahmad and published by Springer Science & Business Media. This book was released on 2011-02-01 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on successful application of microbial biotechnology in areas such as medicine, agriculture, environment and human health.
Download or read book Fate and Effects of Silver Nanoparticle Additions in a Lake Ecosystem written by Daniel Clyde Rearick and published by . This book was released on 2017 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential release of nanoparticles into aquatic environments is raising global concerns. As antimicrobials, silver nanoparticles (AgNPs) are among the most prominent form in use. Despite this, their fate, long-term toxicity, and ecological relevance have yet to be investigated largely under natural settings with seasonality and environmental complexity. To better understand the environmental significance, we released AgNPs into Lake 222 at the Experimental Lakes Area over two years. AgNPs remained suspended in the water column and were detected throughout the lake and in the lower food web. Total Ag concentrations ranged from below 0.07 to 18.9 ?g L-1 in lake water, and were highly dynamic seasonally both in the epilimnion and hypolimnion depending on the physical, chemical and biological conditions of the lake. Approximately 60% of the measured Ag mass in October was present in the sediment in 2014 and 50% in 2015 demonstrating relatively high sedimentation and removal from the water column. During winter months, Ag was largely absent in the water column under the ice. After ice melt and before summer stratification, Ag concentrations increased in the lake suggesting AgNPs may not be tightly bound to the sediment and are able re-enter the water column during spring mixing events. Despite temporal variation, total Ag was highly synchronous across spatial locations for both years, indicating rapid dispersal upon lake entry. When investigating AgNP sizes using spICPMS, size distributions were similar across spatial locations, with the 40-60 nm size class constituting approximately 60% of all particles iii identified. Large aggregates (>100 nm) and dissolved Ag were infrequently detected within the lake. Ag accumulated in the lower food web ranging from 0.27-16.82 ?g Ag mg C-1 in the bacterioplankton and 0.17-6.45 ?g Ag mg C-1 in algae (particulate fraction). Partial least squares models revealed the highest predictors of Ag accumulation were dissolved nutrients including DOC, TDN, TDP in bacterioplankton. Major predictors for particulate Ag included temperature, dissolved oxygen, and sampling date. The diversity of predictors among biological compartments emphasizes the importance of understanding the role of environmental complexity within the lower food web. Despite Ag accumulation we did not detect strong negative effects on the lake food web. An increase in particulate and bacterioplankton chlorophyll-a occurred after addition in contrast to reference lakes, which may indicate a hormetic response to low dose AgNP concentrations. Our findings provide the first whole-lake perspective regarding Ag fate and toxicity, suggesting small scale experiments may overestimate environmental responses. Keywords: Silver nanoparticles, ecotoxicity, whole-lake experiment, lower food web fate.
Download or read book Silver Micro Nanoparticles written by Samir Kumar and published by BoD – Books on Demand. This book was released on 2021-09-15 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the different methodologies for producing and synthesizing silver nanoparticles (AgNPs) of various shapes and sizes. It also provides an in-depth understanding of the new methods for characterizing and modifying the properties of AgNPs as well as their properties and applications in various fields. This book is a useful resource for a wide range of readers, including scientists, engineers, doctoral and postdoctoral fellows, and scientific professionals working in specialized fields such as medicine, nanotechnology, spectroscopy, analytical chemistry diagnostics, and plasmonics.
Download or read book Cellular Effects of Heavy Metals written by Gaspar Banfalvi and published by Springer Science & Business Media. This book was released on 2011-03-02 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term “heavy metals” is used as a group name of toxic metals and metalloids (semimetals) causing contaminations and ecotoxicity. In strict chemical sense the density of heavy metals is higher than 5 g/cm3. From biological point of view as microelements they can be divided into two major groups. a. For their physiological function organisms and cells require essential microelements such as iron, chromium (III), cobalt, copper, manganese, molidenium, zinc. b. The other group of heavy metals is toxic to the health or environment. Of highest concern are the emissions of As, Cd, Co, Cu, Hg, Mn, Ni, Pb, Sn, Tl. The toxicity of heavy metals is well known at organizational level, while less attention has been paid to their cellular effects. This book describes the toxicity of heavy metals on microorganisms, yeast, plant and animal cells. Other chapters of the book deal with their genotoxic, mutagenic and carcinogenic effects. The toxicity of several metals touch upon the aspects of environmental hazard, ecosystems and human health. Among the cellular responses of heavy metals irregularities in cellular mechanisms such as gene expression, protein folding, stress signaling pathways are among the most important ones. The final chapters deal with biosensors and removal of heavy metals. As everybody is eating, drinking and exposed to heavy metals on a daily basis, the spirit of the book will attract a wide audience.
Download or read book The Effect of Low Silver Hearings on H Res 72 MAr 7 April 15 1932 written by United States. Congress. House. Committee on coinage, weights & measures and published by . This book was released on 1932 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Low Silver written by United States. Congress. House. Committee on Coinage, Weights, and Measures and published by . This book was released on 1932 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutraceuticals in Veterinary Medicine written by Ramesh C. Gupta and published by Springer. This book was released on 2019-05-21 with total page 877 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique work compiles the latest knowledge around veterinary nutraceuticals, commonly referred to as dietary supplements, from ingredients to final products in a single source. More than sixty chapters organized in seven sections collate all related aspects of nutraceutical research in animal health and disease, among them many novel topics: common nutraceutical ingredients (Section-I), prebiotics, probiotics, synbiotics, enzymes and antibacterial alternatives (Section-II), applications of nutraceuticals in prevention and treatment of various diseases such as arthritis, periodontitis, diabetes, cognitive dysfunctions, mastitis, wounds, immune disorders, and cancer (Section-III), utilization of nutraceuticals in specific animal species (Section-IV), safety and toxicity evaluation of nutraceuticals and functional foods (Section-V), recent trends in nutraceutical research and product development (Section-VI), as well as regulatory aspects for nutraceuticals (Section-VII). The future of nutraceuticals and functional foods in veterinary medicine seems bright, as novel nutraceuticals will emerge and new uses of old agents will be discovered. International contributors to this book cover a variety of specialties in veterinary medicine, pharmacology, pharmacognosy, toxicology, chemistry, medicinal chemistry, biochemistry, physiology, nutrition, drug development, regulatory frameworks, and the nutraceutical industry. This is a highly informative and carefully presented book, providing scientific insight for academia, veterinarians, governmental and regulatory agencies with an interest in animal nutrition, complementary veterinary medicine, nutraceutical product development and research.
Download or read book The Bacteriological and Chemical Behavior of Silver in Low Concentrations written by Cecil W. Chambers and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nano Antimicrobials written by Nicola Cioffi and published by Springer Science & Business Media. This book was released on 2012-02-26 with total page 563 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a high demand for antimicrobials for the treatment of new and emerging microbial diseases. In particular, microbes developing multidrug resistance have created a pressing need to search for a new generation of antimicrobial agents, which are effective, safe and can be used for the cure of multidrug-resistant microbial infections. Nano-antimicrobials offer effective solutions for these challenges; the details of these new technologies are presented here. The book includes chapters by an international team of experts. Chemical, physical, electrochemical, photochemical and mechanical methods of synthesis are covered. Moreover, biological synthesis using microbes, an option that is both eco-friendly and economically viable, is presented. The antimicrobial potential of different nanoparticles is also covered, bioactivity mechanisms are elaborated on, and several applications are reviewed in separate sections. Lastly, the toxicology of nano-antimicrobials is briefly assessed.
