Download or read book Characteristics and Sampling Efficiencies of Aerosol Samplers Manufactured by Mesosystem Technology Inc written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and sampling efficiencies of five aerosol samplers designed and built by MesoSyetem Technology, Incorporated (Kennewick, WA) were determined. The samplers tested were three BioCapture(TM) (BT-550) samplers, one MicroVIC(TM) concentrator connected to a filter (MV-F), and one MicroVIC(TM) concentrator connected to an SKC BioSampler (MV-SKC). Monodisperse fluorescent oleic acid particles and monodisperse fluorescent polystyrene latex particles were used in the tests. The analysis was by fluorometry. The results showed that all samplers had a peak sampling efficiency for 2-micrometers particles. The average peak sampling efficiencies of the samplers BT-550, MV-F, and MV-SKC were 38%, 63%, and 27%, respectively.
Download or read book Characteristics and Sampling Efficiencies of Aerosol Samplers Rotating Arm Sampler BiocaptureTM Sampler and MicrovicTM Aerosol Concentrator written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and sampling efficiencies of three aerosol samplers were determined. They are Rotating Arm Sampler (RAS), BioCapture(Trademark) Sampler, and Microvic(Trademark) Aerosol Concentrator. The RAS was made at the U.S. Army Edgewood Chemical Biological Center, and the BioCapture(Trademark) and the Microvic(Trademark) aerosol concentrator were made by MesoSystems Technology, Inc. (Richland, WA). The RAS samples the aerosol on filters. The BioCapture(Trademark) collects the particles on a wetted rotating surface, and the Microvic(Trademark) concentrates the particles from an air flow rate of 30 L/min to 3 L/min. A filter is attached to the Microvic(Trademark) Aerosol Concentrator to collect the particles. Monodisperse fluorescent oleic acid particles and monodisperse fluorescent polystyrene latex particles were used in these tests. Fluorometry was the analysis method. The results showed that the sampling efficiency of the RAS is between 80 - 95% for 2 - 13 micrometers particles. The sampling efficiency of the BioCapture(Trademark) is
Download or read book Characteristics and Sampling Efficiencies of Two Personal Aerosol Samplers written by and published by . This book was released on 2007 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and aerosol sampling efficiencies of two units of the same model Personal Aerosol Sampler (PAS-1 and PAS-2) were characterized at ECBC. These samplers were designed and manufactured by Research Center for Toxicology and Hygienic Regulation of Biopreparations at the Federal Directorate of Medical, Biological and Extreme Problems "Medbioextrem", Ministry of Health of the Russian Federation, Russia. These samplers have non-traditional wetted wall cyclones to collect and concentrate aerosols into liquid. The samplers are small, portable, and easy to use for decontamination. The sampling efficiency tests were conducted with monodisperse 0.5-, 1-, and 2.1-micrometre fluorescent Polystyrene Latex (PSL) microspheres, and 5.8- and 9.6-micrometre fluorescent oleic acid particles. The air flow rate of PAS-1 was 10 Lpm and the air flow rate of PAS-2 was 9 Lpm. The sample output volumes for PAS-1 and PAS-2 were 1.9 + or - 0.5 cu cm and 2.0 + or - 0.5 cu cm, respectively. The results of PAS-1 and PAS-2 showed the highest sampling efficiency of 72.6% + or - 6.8 and 77.6% for 5.8-micrometre particles, respectively. The power requirements of these samplers will depend on the vacuum pumps used to pull the air through the samplers.
Download or read book Characteristics and Sampling Efficiencies of SpinCon and Pre Production Omni Model Aerosol Samplers written by and published by . This book was released on 2006 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and aerosol sampling efficiencies of one SpinCon and two pre-production (PP) Omni model aerosol samplers Omni-2 and Omni-3) (Sceptor Industries, Inc., Kansas, MO) were determined at the U.S. Army Edgewood Chemical Biological Center. All three samplers have non-traditional wetted-wall cyclones to collect and concentrate aerosols in liquid. The Omni aerosol sampler is designed to be approximately half the weight, half the size, and a quarter of the power of the SpinCon. The sampling efficiency tests were conducted with monodisperses 1- and 3-um fluorescent polystyrene latex (PSL) microspheres and 3.5- and 5-um fluorescent oleic acid particles.
Download or read book Characteristics and Sampling Efficiencies of OMNI 3000 Aerosol Samplers written by and published by . This book was released on 2006 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and aerosol sampling efficiencies of four Omni 3000 aerosol samplers (Sceptor Industries, Inc., Kansas, MO) were determined at ECBC. These samplers have nontraditional wetted-wall cyclones to collect and concentrate aerosols into liquid. The sampling efficiency tests were conducted with monodisperse 0.5-, 1-, 3-, and 5-mum fluorescent polystyrene latex (PSL) microsperes and 2.9-, 5.8-, and 8-mum fluorescent oleic acid particles. The results showed the highest sampling efficiency of 91% for 3-mum particles using the fluorescent PSL microspheres and 70% for 2.9-mum liquid fluorescent oleic acid particles. Omni aerosol samplers have approximately 277 L/min of air flowrate, use 83 W of power, depending on the attachments, and they are small in size. They give approximately 11 mL of liquid after each sampling. These samplers are portable, battery operated, and easy to use and decontaminate.
Download or read book Characteristics and Sampling Efficiencies of Portable High Throughput Liquid Assisted Aerosol Sampler Model APAS 2 PHTLAAS APAS 2 written by and published by . This book was released on 2007 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characteristics and aerosol sampling efficiencies of a Portable High Throughput Liquid-Assisted Air Sampler Model APAS-2 (PHTLAAS-APAS-2) (Zaromb Research Corp., Hinsdale, IL) were determined at the U.S. Army Edgewood Chemical Biological Center (ECBC). The PHTLAAS-APAS-2 is a portable, battery-operated bioaerosol sampler designed to collect 0.5- to 10-micrometers particles into a buffer solution to preserve the viability of bio-organisms. Sampling efficiency tests were conducted with 1- and 3-micrometers polystyrene latex microspheres and 3-, 5-, and 8-micrometers fluorescent oleic acid particles. The results show that the sampler has a high (>55%) sampling efficiency for the particle sizes tested with a peak sampling efficiency of 87.7 plus or minus 3.8% for 3-micrometers particles. The sample collection liquid (25 microLiters) was placed in the cyclone before each sampling. After 10 min of sampling, the average sample output was 18.1 plus or minus 1.0 microLiters. The measured air flowrate using a hot wire anemometer was 305.9 Lpm at the inlet. A previous version, the PHTLAAS, was also tested at ECBC, and the results show that the PHTLAAS-APAS-2 is smaller, lighter, and has a slightly higher sampling efficiency for larger size (>5 micrometers) particles compared to the PHTLAAS (its predecessor).
Download or read book Aerosol Sampling written by James H. Vincent and published by Wiley. This book was released on 2007-04-04 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive account of the important field of aerosol sampling as it is applied to the measurement of aerosols that are ubiquitous in occupational and living environments, both indoor and outdoor. It is written in four parts: Part A contains 9 chapters that describe the current knowledge of the physical science that underpins the process of aerosol sampling. Part B contains 4 chapters, which present the basis of standards for aerosols, including the link with human exposure by inhalation. Part C contains 7 chapters that cover the development of practical aerosol sampling instrumentation, and how technical designs and methods have evolved over the years in order that aerosol sampling may be carried out in a manner matching the health-related and other criteria that have been proposed as parts of standards. Finally Part D contains 6 chapters that describe how a wide range of aerosol sampling instruments have performed when they have been applied in the field in both occupational and ambient atmospheric environments, including how different instruments, nominally intended to measure the same aerosol fraction, compare when used side-by-side in the real world. The book draws together all that is known about aerosol sampling, for the benefit of researchers and practitioners in occupational and environmental health and all other fields of science and engineering where aerosols are of interest.
Download or read book Characteristics and Sampling Efficiency of PHTLAAS TM Air Sampler written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was conducted to characterize three configurations of Portable High-Throughput Liquid-Absorption Air Sampler (PHTLAAS)(TM) (Zaromb Research Corporation, Hinsdale, IL). This is a light-weight, high-volume sampler that has a wetted wall cyclone as the aerosol collector. Three configurations of the PHTLAAS(TM) were tested: (1) the cyclone with a slit opening off axis to the center of the cyclone without liquid recirculation, (2) the cyclone with a circular inlet opening off axis to the cyclone without liquid recirculation, and (3) the cyclone with a slit opening off axis to the center of the cyclone with a liquid recirculation to wet the cyclone walls continuously. The sampling efficiency of the PHTLAAS(TM) was determined by fluorometer analysis of sampled monodisperse fluorescent polystyrene latex microspheres and sodium fluorescein tagged oleic acid particles. Results show the collection efficiency is relatively high (greater than 62% for 1-10 micrometer particles with a peak of 84% for 4 micrometer particles). The power consumption of the Configuration 3 sampler is 85.3 watts during sampling.
Download or read book Sampling Efficiency Measurement Methods for Aerosol Samplers written by and published by . This book was released on 2005 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerosol samplers and concentrators are characterized at the U.S. Army Edgewood Chemical Biological Center. The characterization methods are summarized and include (1) monodisperse fluorescent/nonfluorescent Polystyrene Latex (PSL) microspheres with fluorometric analysis or Coulter Multisizer Analysis; (2) polydisperse solid aluminum oxide particles with Aerodynamic Particle Sizer (APS) analysis or Coulter Multisizer Analysis; (3) liquid fluorescent oleic acid particles with fluorometric analysis; and (4) bioparticles with Coulter Multisizer, culturing, enzyme linked immunosorbent assays (ELISA), polymerase chain reaction (PCR), and APS analyses. Samples are sent out for ELISA and PCR analysis. Aerosols are generated using several methods. The PSL microsphere aerosols are generated using a Collison nebulizer, sonic nozzle, Ink Jet Aerosol Generator (IJAG), and puffers. Aluminum oxide particle aerosols are generated using a sonic nozzle. Fluorescent oleic acid particle aerosols are generated using a Vibrating Orifice Aerosol Generator (VOAG). Bioparticle aerosols are generated using puffers (metered dose inhaler devices), nebulizers, IJAG, and sonic nozzle.
Download or read book The Sampling Characteristics and Efficiencies of Personal Dust Samplers written by K. Y. K. Chung and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weight Gain During Pregnancy written by National Research Council and published by National Academies Press. This book was released on 2010-01-14 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: As women of childbearing age have become heavier, the trade-off between maternal and child health created by variation in gestational weight gain has become more difficult to reconcile. Weight Gain During Pregnancy responds to the need for a reexamination of the 1990 Institute of Medicine guidelines for weight gain during pregnancy. It builds on the conceptual framework that underscored the 1990 weight gain guidelines and addresses the need to update them through a comprehensive review of the literature and independent analyses of existing databases. The book explores relationships between weight gain during pregnancy and a variety of factors (e.g., the mother's weight and height before pregnancy) and places this in the context of the health of the infant and the mother, presenting specific, updated target ranges for weight gain during pregnancy and guidelines for proper measurement. New features of this book include a specific range of recommended gain for obese women. Weight Gain During Pregnancy is intended to assist practitioners who care for women of childbearing age, policy makers, educators, researchers, and the pregnant women themselves to understand the role of gestational weight gain and to provide them with the tools needed to promote optimal pregnancy outcomes.
Download or read book Frames of Reference for Pediatric Occupational Therapy written by Paula Kramer and published by Lippincott Williams & Wilkins. This book was released on 2018-12-07 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher's Note: Products purchased from 3rd Party sellers are not guaranteed by the Publisher for quality, authenticity, or access to any online entitlements included with the product. Frames of Reference for Pediatric Occupational Therapy, Fourth Edition, uses frames of reference for diagnostic categories (neuro-development, social participation, etc.) as effective blueprints for applying theory to pediatric OT practice. Updated with new chapters, case examples, and a new focus on evidence-based practice. This proven approach helps students understand the “why” of each frame of reference before moving on to the “how” of creating effective treatment programs to help pediatric clients lead richer, fuller lives. The book first covers the foundations of frames reference for pediatric OT (Section I), and then covers commonly used frames of reference such as motor skill acquisition, biomechanical, and sensory integration (Section II). A final section discusses newer focused/specific frames of reference like handwriting skills and social participation. A standardized format within each frame of reference chapter covers the same elements (Theoretical Base, Supporting Evidence, the Function/Dysfunction Continuum, Guide to Evaluation, and Application to Practice) to help students build the knowledge and skills needed for effective practice.
Download or read book Priority Areas for National Action written by Institute of Medicine and published by National Academies Press. This book was released on 2003-04-10 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new release in the Quality Chasm Series, Priority Areas for National Action recommends a set of 20 priority areas that the U.S. Department of Health and Human Services and other groups in the public and private sectors should focus on to improve the quality of health care delivered to all Americans. The priority areas selected represent the entire spectrum of health care from preventive care to end of life care. They also touch on all age groups, health care settings and health care providers. Collective action in these areas could help transform the entire health care system. In addition, the report identifies criteria and delineates a process that DHHS may adopt to determine future priority areas.
Download or read book Rethinking Educational Practice Through Reflexive Inquiry written by Nicole Mockler and published by Springer Science & Business Media. This book was released on 2011-04-13 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Susan Groundwater-Smith is one of the most influential voices in the world of educational practitioner inquiry. The convener in Australia of the Coalition of Knowledge Building Schools, she is a staunch advocate of innovative methods of practitioner inquiry with a particular emphasis upon student voice and the use of images in capturing young people’s perspectives on their learning experience. So it is more than fitting that this unique text on practitioner inquiry and teacher professional learning is dedicated to her. Rethinking Education Practice Through Reflexive Inquiry is a compilation of essays that explore contemporary issues in practitioner inquiry and action research from the perspective of both university-based and school-based authors. The essays discuss the practical, political and theoretical dimensions of practitioner inquiry, advancing the argument that the adoption of an inquiring approach to practice is both an integral dimension of teachers’ work in the modern school as well as critical to effective and authentic professional learning. And the essays draw on the work of Groundwater-Smith to demonstrate the benefits brought to bear on schools, teachers and learners when the complex nature of the relationship between inquiry and practice is understood and acted upon in pursuit of democratic knowledge interests.
Download or read book Handbook of African Educational Theories and Practices written by A. Bame Nsamenang and published by HDRC. This book was released on 2012 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Psychology written by Jennifer Walinga and published by Hasanraza Ansari. This book was released on with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is designed to help students organize their thinking about psychology at a conceptual level. The focus on behaviour and empiricism has produced a text that is better organized, has fewer chapters, and is somewhat shorter than many of the leading books. The beginning of each section includes learning objectives; throughout the body of each section are key terms in bold followed by their definitions in italics; key takeaways, and exercises and critical thinking activities end each section.
Download or read book Teaching with Poverty in Mind written by Eric Jensen and published by ASCD. This book was released on 2009 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Teaching with Poverty in Mind: What Being Poor Does to Kids' Brains and What Schools Can Do About It, veteran educator and brain expert Eric Jensen takes an unflinching look at how poverty hurts children, families, and communities across the United States and demonstrates how schools can improve the academic achievement and life readiness of economically disadvantaged students. Jensen argues that although chronic exposure to poverty can result in detrimental changes to the brain, the brain's very ability to adapt from experience means that poor children can also experience emotional, social, and academic success. A brain that is susceptible to adverse environmental effects is equally susceptible to the positive effects of rich, balanced learning environments and caring relationships that build students' resilience, self-esteem, and character. Drawing from research, experience, and real school success stories, Teaching with Poverty in Mind reveals * What poverty is and how it affects students in school; * What drives change both at the macro level (within schools and districts) and at the micro level (inside a student's brain); * Effective strategies from those who have succeeded and ways to replicate those best practices at your own school; and * How to engage the resources necessary to make change happen. Too often, we talk about change while maintaining a culture of excuses. We can do better. Although no magic bullet can offset the grave challenges faced daily by disadvantaged children, this timely resource shines a spotlight on what matters most, providing an inspiring and practical guide for enriching the minds and lives of all your students.
