نتایج جستجو برای: particle size fraction

تعداد نتایج: 828081  

Journal: :International Journal of Numerical Methods for Heat & Fluid Flow 2021

Purpose The purpose of this paper is to study the soot formation and evolution by using newly developed Lagrangian particle tracking with weighted fraction Monte Carlo (LPT-WFMC) method. Design/methodology/approach particles are used in MC framework tracked approach. A detailed model based on LPT-WFMC method ethylene laminar premixed flames. Findings validated both experimental numerical result...

A nanofluid is a dilute liquid suspension of particles with at least one critical dimension smaller than ~100 nm. Research works so far suggest that nanofluids offer excellent heat transfer enhancement over conventional base fluids. The enhancement depends on several factors such as particle shape, particle size distribution, volume fraction of nanoparticles, temperature, pH, and thermal conduc...

2006
Bob Goodband Crystal Groesbeck Mike Tokach Steve Dritz Joel DeRouchey

Cereal grains are the primary energy source in swine diets. Therefore, not only must producers be concerned about the composition of the grain, but also how it is processed so the pig can fully utilize the nutrients. Because feed represents 65 to 75 percent of overall production costs in a swine operation, improving the efficiency of feed utilization will have a tremendous impact on the cost of...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
e. ghiasvand a.a. ramezanianpour

the benefits of using mineral admixtures as a partial replacement of portland cement (pc) are well established in the literature. economic and environmental advantages by reducing co2 emissions are well known. this paper examines the influence of intergrinding and separate grinding on the amount of energy consumption, blaine fineness and particle size distribution (psd) of blended cements, name...

Journal: :journal of agricultural science and technology 2013
m. majzoobi s. sharifi b. imani a. farahnaky

rice bran is a major by-product of the rice milling process that contains high amounts of fiber, proteins, fats, vitamins, minerals as well as antioxidants and hence can be utilized in enriching food products. the main aim followed in this study was to determine the effects of rice bran of variable particle sizes (53, 125 and 210 µm) and its quantity (0, 5, 10, 15 and 20%) on the quality of bat...

Journal: :journal of agricultural science and technology 2015
s. wang g. j. dorr m. khashehchi x. he

the aim of the present study was to investigate the influence of nozzle configurations on spray drift and explain the influences using several atomization characteristics (length of spray sheet, spray angle, velocity distribution of flow field, fluctuation of velocity, and droplet size). nozzles manufactured by one company (lechler gmbh, germany) were tested by spraying local tap water in a win...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2007
jafar mohammadzadeh milani zahra emam-djomeh mohammad safari mohammad mousavi babak ghanbarzadeh

ferula gumosa  boiss is one of the natural plants of iran whose exudates (barijeh) can be used in food industry. in the present study the properties of the gum extracted from tubers of ferula gumosa were examined. for this purpose, gum was extracted from crude exudates by alcoholic extraction with 90% (v/v) ethanol. the purity of gum was relatively high, and it was composed mostly of polysaccha...

Journal: :علوم و تکنولوژی پلیمر 0
شاداب باقری خولنجانی حمید میرزاده محمد عترتی خسروشاهی

the effects of chitosan/biopolymer (c/p) and nanohydroxyapatite/ biopolymer (nha/p) weight ratios on particle size and its uniformity, cross-linking density and nh2 content of nano-hydroxyapatite/chitosan/gelatin (nha/c/g) microspheres were investigated. microspheres were fabricated using water-in-oil emulsion. cross-linking of microspheres was performed using water soluble carbodiimide. partic...

2011
Aliasgar J. Kundawala Vishnu A. Patel Harsha V. Patel Dhaglaram Choudhary

The objective of the present study was to entrap isoniazid, an Antitubercular drug, in cross linked chitosan matrix and study in vitro lung deposition of powdered chitosan microspheres using Andersen cascade impactor. Ionic cross linker Tripolyphospate was used to make cross linked chitosan microspheres to achieve sustained drug release. Chitosan microspheres were prepared by spray drying metho...

Journal: :iranian journal of pharmaceutical research 0
amir amani tehran university of medical sciences hany ali assiut university nicholas blagden university of bradford peter york university of bradford

this study aimed to determine the aerosolization behavior of a nanodispersion of budesonide, prepared using microfluidic reactors. the size and morphology of budesonide nanoparticles were characterized by photon correlation spectroscopy (pcs) and transmission electron microscopy (tem). processing/formulation parameters for formation of the nanoparticles were studied to determine their effects o...

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