نتایج جستجو برای: particle filtration efficiency
تعداد نتایج: 587853 فیلتر نتایج به سال:
Field assessment of enclosed cab filtration system performance using particle counting measurements.
Enclosed cab filtration systems are typically used on mobile mining equipment to reduce miners' exposure to airborne dust generated during mining operations. The National Institute for Occupational Safety and Health (NIOSH) Office of Mine Safety and Health Research (OMSHR) has recently worked with a mining equipment manufacturer to examine a new cab filtration system design for underground indu...
Background and Aim: Electrospun nanofibers can be used to produce filter media in personal protective equipment for the military. The present study aimed to optimize the electrospinning process used to create polyurethane nanofiber substrates and compare the optimum substrate filtration performance with a typical commercial substrate used in the structure of N95 respirators. Methods: In this ex...
Introduction: Pollutants in gas turbine air intake can cause erosion ،corrosion، fouling as well as reduction of power and efficiency of turbine and noticeable economic losses. In order to select the appropriate filtration system, air monitoring of turbine inlet and its filtration is essential. Therefore, this study was performed to assess the quality of gas turbines inlets in a gas power plant...
slow sand filtration (s.s.f) is a main process in the water treatment technology and generally considered as most appropriate for application in rural and small urban areas in developing countries. however, performance of the s.s.f is very sensitive to high turbidity levels. therefore, pretreatment is necessary for such waters. horizontal - flow roughing filtration (hfrf) and direct horizontal ...
Exposure to traffic-generated ultrafine particles (UFP; particles <100 nm) is likely a risk factor for cardiovascular disease. We conducted a trial of high-efficiency particulate arrestance (HEPA) filtration in public housing near a highway. Twenty residents in 19 apartments living <200 m from the highway participated in a randomized, double-blind crossover trial. A HEPA filter unit and a parti...
Microscopic data on airborne particle separation in depth filters are a key for understanding and predictive modeling of the evolution filtration properties such as pressure drop efficiency during process. Tomographic imaging techniques (e.g., MRI, CT) excellent methods 3D-resolved analysis microscopic loading behavior, but these often limited terms spatial resolution because low contrast betwe...
Background: Ducrosia anethifolia (DC.) Boiss is native to Iran and its essential oil has cytotoxic effects. Objective: Herbal Essences have limited application due to instability. In this research, nanoliposome containing Ducrosia essential oil has been studied for abundance and size distribution to enhance the essential oil stability for use in drug delivery systems. Methods: Essential oil was...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید