نتایج جستجو برای: air filtration

تعداد نتایج: 242582  

Journal: :Energies 2023

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...

Journal: :Journal of Aerosol Medicine and Pulmonary Drug Delivery 2021

Journal: یافته 2012
edris Hoseinzadeh , ghodratollah Roshanaie , masoud Moghadam Shakib , mohammad reza Samarghandie , mohammad yosef Alikhani , seyed amir Ghiasian ,

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کردستان - دانشکده کشاورزی 1393

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...

Journal: :Energy Reports 2021

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...

ژورنال: علوم آب و خاک 2012
محمدرضا مصدقی, , علی‌اکبر صفری سنجانی, , علی‌اکبر محبوبی, , محمدباقر فرهنگی, ,

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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