نتایج جستجو برای: air filtration
تعداد نتایج: 242582 فیلتر نتایج به سال:
Wind turbine farms require efficient operation and maintenance strategies to ensure long-term profitability cost-effectiveness. However, temperatures dust accumulation can significantly affect performance increase costs. This study investigates the impact of air filter clogging on wind nacelle temperature by collecting data from Supervisory Control Data Acquisition (SCADA) system in southern Jo...
Development of Needle-Punched Nonwoven Fabrics from Reclaimed Fibers for Air Filtration Applications
Background : In the educational hospitals of Hamedan university of medical sciences there was no previous study on qualitative and quantitative of bioaerosoles in the air of different wards. So, in this study the quality and quantity of bioaerosols in the air of hospitals was investigated to establish reference for future studies or measures. Materials and Methods: In this cross sectional rese...
اسانس های گیاهی با اثرات شناخته شده ای که روی آفات گذاشته اند، می توانند جایگزین مناسبی برای آفت کش های شیمیایی رایج باشند. در این تحقیق، اثرات سمیت تدخینی، تماسی و دورکنندگی اسانس صمغ، میوه و برگ بنهpistacia atlantica desf. subsp. kurdica (zohary) rech. f. روی حشرات کامل سوسک چهارنقطه ای حبوبات callosobruchus maculatus (fabricius, 1775) و شناسایی ترکیبات، اثرات سمیت تدخینی، تماسی و دورکنندگی ا...
An analysis on energy demands in airborne particulate matter filtration using hollow-fiber membranes
This work analyzes energy requirements for drawing the air through a hollow-fiber membrane (HFM) during filtration. Polypropylene HFMs varying in inner fiber diameter (230 and 470?m) were used to separate ASHRAE A2 fine test dust from simulated particle laden environment. During experiments, pressure drop, permeate velocity (air flowrate), fan frequency power input recorded. The obtained experi...
In agriculture, cow manures are used to enhance soil fertility and productivity. Escherichia coli is the most common fecal coliform in cow manure and considered as an index for microbial contamination of groundwater resources. The objective of this study was to investigate the transport of Escherichia coli (released from cow manure) through the field soil. Lysimeters (with internal diameter of ...
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