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Author : Samuel John Patrash
Publisher :
ISBN 13 :
Total Pages : 538 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Measurement of Organic Vapors with Surface-acoustic-wave Microsensor Arrays written by Samuel John Patrash and published by . This book was released on 1994 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jeongim Park
Publisher :
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Personal Direct-reading Instrument Employing a Surface-acoustic-wave Microsensor Array for the Measurement of Organic Vapor Exposures written by Jeongim Park and published by . This book was released on 2000 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Arthur Groves
Publisher :
ISBN 13 :
Total Pages : 544 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Development of a Surface-acoustic-wave Microsensor Array for Measuring Organic Vapors in Breath and Ambient Air written by William Arthur Groves and published by . This book was released on 1997 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Subsurface VOCs Using a Chemical Microsensor Array. Final Report written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the results of laboratory investigations of several performance parameters relevant to surface-acoustic-wave (SAW) chemical sensor arrays for the measurement of volatile organic compounds (VOCs) in contaminated soil and groundwater. The small size, low cost, sensitivity and selectivity of such instruments promise improvements in the quality and quantity of data used to guide site assessment and restoration efforts. In this investigation, calibrations were performed for 15 different coated SAW sensors. Each sensor was exposed to six VOCs selected to represent three chemical classes of contaminants that are commonly found at waste sites (i.e., aliphatic, aromatic and chlorinated hydrocarbons). A new pattern recognition method was developed for determining which coated sensors would maximize the selectivity and accuracy of quantitation for a given set of vapor contaminants. Using this method, an optimal subwet of four coated sensors was selected for testing in a prototype microsensor instrument. Additional laboratory experiments were performed with this optimized array to assess the limits of detection and linear response ranges for the representative vapors, as well as the additivity of responses to vapors in binary mixtures, temperature and humidity effects, aging effects, and other performance parameters related to the application of this technology to soil and groundwater VOC monitoring. Results demonstrate that SAW microsensor arrays can identify and quantify specific VOCs at concentrations in the [mu]g/L to mg/L range when present alone or in simple (e.g., binary) mixtures. SAW sensor technology offers a potentially effective alternative to existing field instrumentation for headspace analysis, soil vapor monitoring, and vacuum extraction process monitoring of VOCs in subsurface media.
Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (683 download)
Download or read book Detection of Volatile Organics Using a Surface Acoustic Wave Array System written by and published by . This book was released on 1999 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A chemical sensing system based on arrays of surface acoustic wave (SAW) delay lines has been developed for identification and quantification of volatile organic compounds (VOCs). The individual SAW chemical sensors consist of interdigital transducers patterned on the surface of an ST-cut quartz substrate to launch and detect the acoustic waves and a thin film coating in the SAW propagation path to perturb the acoustic wave velocity and attenuation during analyte sorption. A diverse set of material coatings gives the sensor arrays a degree of chemical sensitivity and selectivity. Materials examined for sensor application include the alkanethiol-based self-assembled monolayer, plasma-processed films, custom-synthesized conventional polymers, dendrimeric polymers, molecular recognition materials, electroplated metal thin films, and porous metal oxides. All of these materials target a specific chemical fi.mctionality and the enhancement of accessible film surface area. Since no one coating provides absolute analyte specificity, the array responses are further analyzed using a visual-empirical region-of-influence (VERI) pattern recognition algorithm. The chemical sensing system consists of a seven-element SAW array with accompanying drive and control electronics, sensor signal acquisition electronics, environmental vapor sampling hardware, and a notebook computer. Based on data gathered for individual sensor responses, greater than 93%-accurate identification can be achieved for any single analyte from a group of 17 VOCs and water.
Author : Meng-Da Hsieh
Publisher :
ISBN 13 :
Total Pages : 722 pages
Book Rating : 4.3/5 (91 download)
Download or read book An Investigation of Polymer-coated Surface Acoustic Wave Microsensor Arrays for the Determination of Organic Solvent Vapors written by Meng-Da Hsieh and published by . This book was released on 2003 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (727 download)
Download or read book A Smart Sensor System for Trace Organic Vapor Detection Using a Temperature-controlled Array of Surface Acoustic Wave Vapor Sensors, Automated Preconcentrator Tubes, and Pattern Recognition written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A smart sensor system for the detection, of toxic organophosphorus and toxic organosulfur vapors at trace concentrations has been designed, fabricated, and tested against a wide variety of vapor challenges. The key features of the system are: An array of four surface acoustic wave (SAW) vapor sensors, temperature control of the vapor sensors, the use of pattern recognition to analyze the sensor data, and an automated sampling system including thermally-desorbed preconcentrator tubes (PCTs).
Author : Neha Kanwar Rawat
Publisher : CRC Press
ISBN 13 : 1000168980
Total Pages : 294 pages
Book Rating : 4.0/5 (1 download)
Download or read book Green Polymer Chemistry and Composites written by Neha Kanwar Rawat and published by CRC Press. This book was released on 2021-05-09 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book examines the latest developments in the important and growing field of producing conventional polymers from sustainable sources. With recent advancements in synthesis technologies and the discovery of new functional monomers, research shows that green polymers with better properties can be produced from renewable resources. This volume describes these advances in synthesis, processing, and technology and provides not only state-of-the-art information but also acts to stimulate research in this direction. Green Polymer Chemistry and Composites: Pollution Prevention and Waste Reduction illustrates how chemical industries play an essential role to sustain the world economies and looks at forthcoming technologies and scientific developments in novel products, less toxicological materials, and industrial procedures with high efficiency and renewable energy products. Green chemistry seeks for the design of innovative chemical products with higher efficiency and lowest hazardous substances for the health and the environment.
Author : United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment
Publisher :
ISBN 13 :
Total Pages : 1348 pages
Book Rating : 4.3/5 (121 download)
Download or read book The Department of Energy's FY 1997 Budget Request for the Office of Energy Research (OER) written by United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment and published by . This book was released on 1996 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Radislav A. Potyrailo
Publisher : Springer Science & Business Media
ISBN 13 : 1441989897
Total Pages : 642 pages
Book Rating : 4.4/5 (419 download)
Download or read book High-Throughput Analysis written by Radislav A. Potyrailo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, edited by Potyrailo and Amis, addresses a new paradigm-shifting approach in the search for new materials-Combinatorial Materials Science. One way to consider such an approach is to imagine an adventurous chef who decides to look for new entrees by cooking food ingredients in many pots using different combinations in every pot, and boil ing, steaming, or frying them in various ways. Although most of the pots will not have the tastiest food ever devised, some recipes will taste intriguing, and some eventually will lead to a discovery of a new fascinating cuisine. Of course, having a skilled chef design the com binatorial formulation will certainly be helpful in ensuring a successful outcome. Similar to food, each engineering material is a complex product of its chemical composition, structure, and processing. Generally, each of these components matters---change one and you get another material. Most of these "new" materials will be less good than ones we use now since existing materials have been refined with the extensive work of scientists and engi neers. At the same time if one prepares diverse materials like our adventurous chef, chang ing material composition, processing conditions and time, etc. , some of these materials will be superior to existing ones and a few might represent breakout technology.
Author :
Publisher :
ISBN 13 :
Total Pages : 806 pages
Book Rating : 4.3/5 (91 download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dennis M. Davis
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (227 download)
Download or read book Surface Acoustic Wave Detection of Organophosphorus Compounds written by Dennis M. Davis and published by . This book was released on 1988 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Acoustic Wave (SAW) devices are potentially useful as small, sensitive chemical vapor sensors. The operating principles of these devices have been described in detail. Their use in detecting dimethyl methylphosphonate vapor has been reported previously. The basic operating principle for the SAW devices is the reversible adsorption of chemical vapors by adsorbent coatings that are sensitive and selective to the vapors that one is trying to detect. That is, SAW devices act as mass sensitive detectors. The SAW device used in this study consists of an array of four coated sensor elements with each coating giving a characteristic response to each of the vapors to be detected. Surface acoustic wave, Microsensors, Simulants, Detection. (mjm).
Author : Daniel Gallagher
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (468 download)
Download or read book Surface Acoustic Wave Devices as Chemical Vapor Sensors written by Daniel Gallagher and published by . This book was released on 2009 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Department of Energy
Publisher :
ISBN 13 :
Total Pages : 346 pages
Book Rating : 4.3/5 (91 download)
Download or read book Innovation Investment Area written by United States. Department of Energy and published by . This book was released on 1994 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : World Scientific
ISBN 13 : 9811245916
Total Pages : 1446 pages
Book Rating : 4.8/5 (112 download)
Download or read book World Scientific Reference Of Water Science, The (In 3 Volumes) written by and published by World Scientific. This book was released on 2022-09-16 with total page 1446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is an indispensable resource for our society. Essential to sustaining life and economic prosperity, water is also the basic component for manufacturing almost everything to keep society alive, including energy, food, clothing, cars, and electronics, among many other examples. It is, thus, an integral part of our lives beyond simply quenching our thirst. In addition, our future economy and security highly depend upon the availability of clean water. Yet given its critical importance, there is a limited supply of renewable freshwater across the globe and there is no substitute. Global population and economic growth, urbanization, and climate change further exacerbate the increasing stress on freshwater supplies. As such, society urgently needs to find the scientific and engineering solutions to more efficiently manage our precious water resources. The volumes of this multi-volume reference cover the latest scientific advancements and solutions in managing and treating this crucial resource.Related Link(s)
Author : Michael Alan Butler
Publisher :
ISBN 13 :
Total Pages : 884 pages
Book Rating : 4.F/5 ( download)
Download or read book Proceedings of the Symposium on Chemical Sensors II written by Michael Alan Butler and published by . This book was released on 1993 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : DIANE Publishing Company
Publisher : DIANE Publishing
ISBN 13 : 9780788126598
Total Pages : 152 pages
Book Rating : 4.1/5 (265 download)
Download or read book Small Business Innovation Research written by DIANE Publishing Company and published by DIANE Publishing. This book was released on 1996 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of the Phase I awards made in FY 1995 under the DOE SBIR program. Covers: novel materials for sustainable energy development, high temperature superconductivity for energy applications, technology and instrumentation for high energy accelerators, natural gas supply, advanced coal-based power systems, hybrid electric vehicle technology, and much more. The work described is novel, high-risk research, but the benefits will also be potentially high if the objectives are met. Brief comments on the potential applications are provided.
