نتایج جستجو برای: particle filtration efficiency

تعداد نتایج: 587853  

E. Leusheva V. Morenov,

Filtration of the drilling mud is one of it's most important parameters, especially when drilling-in producing formation. Decrease of filtration characteristics allows reducing both solid and liquid phases's penetration zone into the formation. The study of the effect of the weighting-bridging agent's fractional composition on the filtration rate allows selecting of optimal composition of the s...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
behzad shahbazi bahram rezai sayed mohammad javad koleini mohammad noparast

in this research, the effect of bubble surface area flux, sb, and particle size on flotation rate constant, k, of pyrite (fes2) particles was studied using bubble-particle interactions. the bubble-particle collision, attachment and detachment efficiencies were calculated under different flow regimes. the k increased with increase in the collision efficiency and decrease in the detachment effici...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2011
Rafal Przekop Leon Gradoń

The filtration of aerosol particles using composites of nano- and microsized fibrous structures is a promising method for the effective separation of nanoparticles from gases. A multi-scale physical system describing the flow pattern and particle deposition at a non-steady-state condition requires an advanced method of modelling. The combination of lattice Boltzmann and Brownian dynamics was us...

Journal: :Journal of Material Science & Engineering 2017

Journal: :Aerosol Science and Technology 2013

Journal: :Processes 2021

Based on DPF filtration and regeneration bench, the solid particle emission high-temperature characteristics of different carbon black loadings deposition distributions are studied. The aerosol generator (PAlAS RGB 1000) is used to introduce particles into inlet a DPF, NanoMet3 meter measure concentration at outlet obtain characteristics. Previous studies found that without particles, there was...

2006
Minoru Seki Masumi Yamada

A size-dependent particle separation (classification) is one of the most important procedures in biochemical, environmental, or medical analyses and their applications. However, the smaller particle size or the smaller size difference makes the particle classification difficult. The Lab-on-a-Chip concept have encouraged the miniaturization of various separation or selection methods for small pa...

Journal: :Infection control and hospital epidemiology 2013
Delbert A Harnish Brian K Heimbuch Michael Husband April E Lumley Kimberly Kinney Ronald E Shaffer Joseph D Wander

OBJECTIVE. Specification of appropriate personal protective equipment for respiratory protection against influenza is somewhat controversial. In a clinical environment, N95 filtering facepiece respirators (FFRs) are often recommended for respiratory protection against infectious aerosols. This study evaluates the ability of N95 FFRs to capture viable H1N1 influenza aerosols. METHODs. Five N95 F...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده کشاورزی 1389

چکیده توان بالقوه تجاری سلولازها و کاربردهای گوناگون آن ها در بسیاری از صنایع انگیزه ای قوی برای تحقیق در این زمینه طی چند دهه گذشته بوده است. با توجه به کاربردهای فراوان این آنزیم در صنایع غذایی? در این پژوهش تصمیم به جداسازی ریزسازواره های تولید کننده سلولاز از خاک درختان انار، انگور، خرمالو و گردو حیاط دانشکده کشاورزی تربیت مدرس، گرفته شد. در این بین خاک درخت خرمالو به دلیل دارا بودن تعداد ...

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