A Granular Bed for Use in a Nanoparticle Respiratory Deposition Sampler [0.03%]
一种用于纳米颗粒呼吸沉积采样器的多孔介质床结构
Jae Hong Park,Imali A Mudunkotuwa,Levi W D Mines et al.
Jae Hong Park et al.
A granular bed was designed to collect nanoparticles as an alternative to nylon mesh screens for use in a nanoparticle respiratory deposition (NRD) sampler. The granular bed consisted of five layers in series: a coarse mesh, a large-bead la...
Donna J H Vosburgh,Timothy Klein,Maura Sheehan et al.
Donna J H Vosburgh et al.
A four-stage personal diffusion battery (pDB) was designed and constructed to measure submicron particle size distributions. The pDB consisted of a screen-type diffusion battery, solenoid valve system, and electronic controller. A data inve...
In Vitro Evaluation of a Device for Intra-Pulmonary Aerosol Generation and Delivery [0.03%]
肺内气溶胶生成和输送设备的体外评估
Zeeshan H Syedain,Amir A Naqwi,Myrna Dolovich et al.
Zeeshan H Syedain et al.
For infants born with respiratory distress syndrome (RDS), liquid bolus delivery of surfactant administered through an endotracheal tube is common practice. While this method is generally effective, complications such as transient hypoxia, ...
Profile and Morphology of Fungal Aerosols Characterized by Field Emission Scanning Electron Microscopy (FESEM) [0.03%]
场发射扫描电子显微镜下空气中真菌气溶胶的形貌学特征分析
Komlavi Anani Afanou,Anne Straumfors,Asbjørn Skogstad et al.
Komlavi Anani Afanou et al.
Fungal aerosols consist of spores and fragments with diverse array of morphologies; however, the size, shape, and origin of the constituents require further characterization. In this study, we characterize the profile of aerosols generated ...
Size Distribution and Estimated Respiratory Deposition of Total Chromium, Hexavalent Chromium, Manganese, and Nickel in Gas Metal Arc Welding Fume Aerosols [0.03%]
气体金属电弧焊烟雾气溶胶中总铬、六价铬、锰和镍的粒径分布及其在呼吸系统的沉积估算分布图
Lorenzo G Cena,William P Chisholm,Michael J Keane et al.
Lorenzo G Cena et al.
A laboratory study was conducted to determine the mass of total Cr, Cr(VI), Mn, and Ni in 15 size fractions for mild and stainless steel gas-metal arc welding (GMAW) fumes. Samples were collected using a nano multi orifice uniform depositio...
Air sampling filtration media: Collection efficiency for respirable size-selective sampling [0.03%]
呼吸颗粒的选择性采集效率及空气采样过滤介质性能测定法
Jhy-Charm Soo,Keenan Monaghan,Taekhee Lee et al.
Jhy-Charm Soo et al.
The collection efficiencies of commonly used membrane air sampling filters in the ultrafine particle size range were investigated. Mixed cellulose ester (MCE; 0.45, 0.8, 1.2, and 5 μm pore sizes), polycarbonate (0.4, 0.8, 2, and 5 μm pore...
A Real-Time Fast-Flow Tube Study of VOC and Particulate Emissions from Electronic, Potentially Reduced-Harm, Conventional, and Reference Cigarettes [0.03%]
一种实时快速烟气管法研究电子烟、潜在减害产品、常规卷烟和参考品的VOCs及颗粒物排放水平
Sandra L Blair,Scott A Epstein,Sergey A Nizkorodov et al.
Sandra L Blair et al.
Tobacco-free electronic cigarettes (e-cigarettes), which are currently not regulated by the FDA, have become widespread as a "safe" form of smoking. One approach to evaluate the potential toxicity of e-cigarettes and other types of potentia...
Deposition Uniformity of Coal Dust on Filters and Its Effect on the Accuracy of FTIR Analyses for Silica [0.03%]
煤尘在滤膜上的沉积均匀性及其对傅立叶变换红外光谱法测定游离二氧化硅准确性的影响
Arthur L Miller,Pamela L Drake,Nathaniel C Murphy et al.
Arthur L Miller et al.
Miners are exposed to silica-bearing dust which can lead to silicosis, a potentially fatal lung disease. Currently, airborne silica is measured by collecting filter samples and sending them to a laboratory for analysis. Since this may take ...
Design Optimization of a Portable Thermophoretic Precipitator Nanoparticle Sampler [0.03%]
一种便携式热泳沉积型纳米颗粒采样器的设计优化
Art Miller,Alek Marinos,Chris Wendel et al.
Art Miller et al.
Researchers at the National Institute for Occupational Safety and Health (NIOSH) are developing methods for characterizing diesel particulate matter in mines. Introduction of novel engine and exhaust after treatment technologies in undergro...
New Approach for Near-Real-Time Measurement of Elemental Composition of Aerosol Using Laser-Induced Breakdown Spectroscopy [0.03%]
基于激光诱导击穿光谱的气溶胶元素组分快速测量新方法研究
Prasoon Diwakar,Pramod Kulkarni,M Eileen Birch
Prasoon Diwakar
A new approach has been developed for making near-real-time measurement of elemental composition of aerosols using plasma spectroscopy. The method allows preconcentration of miniscule particle mass (pg to ng) directly from the sampled aeros...