نتایج جستجو برای: density

تعداد نتایج: 410184  

Journal: :journal of agricultural science and technology 2010
r. niazmand a. niazmand m. sarabi n. arabpourjani a. doaie

probiotic products highly affect the health of consumers by reducing the risk of heart attacks and improving the desirable microflora in the intestinal tract. in this study the effect of yogurt (500g/d for 3 wk) enriched with either bifidobacterium bifidum or lactobacillus acidophilus on the level of cholesterol, low density lipoprotein (ldl) and high density lipoprotein (hdl) of serum and ...

Journal: :journal of agricultural science and technology 2010
r. kianpour y. fathipour k. kamali b. naseri

bionomics of aphis gossypii glover and its predators coccinella septempunctata l. and hippodamia variegata goeze were studied in varamin (tehran province) during 11th may to 5th october 2006 on eggplant crop, with the interaction (density dependence) between the aphid and either of the predators determined. the reliable sample size (number of leaves) with a maximum variation of 6.73% was about ...

Journal: :journal of physical and theoretical chemistry 0
mansoureh pashangpour department of physics, islamshahr branch, islamic azad university, islamshahr, iran vahid ghaffari central tehran branch, islamic azad university, tehran, iran

we have investigated structure and electronic properties of au and si liner chains using the firstprinciplesplane wave pseudopotential method. the transport properties and conductance of these twoliner chains are studied using landauer approaches based on density functional theory (dft). weobtain density of states and band gap using kohn-sham and wannier functions as well as quantumconductivity...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

علم ترمودینامیک و خواص انتقالی در فرآیندهای طراحی وکاربردی ضروری هستند. دانسیته و ویسکوزیته مـخلوطهای چـند تایی در بـسیاری از مـحاسبات مهندسی شیمی مانند انتقال شار، گرما و انتقال جرم مورد نیاز است. دانسیته و ویسکوزیته مـخلوطهای دوتایی وسـه تایی تشـکیل شده از :کلروبنزن، پیریدین وتولوئن دردمـاهای 15/ 288 درجه کلوین تا 15/ 313 درجه کلوین در فشار جو اندازه گیری شد. از این داده های تجربی برای محاس...

Journal: :international journal of environmental research 2014
a.d. asencio

the seasonal diversity and distribution of microphytes and macrophytes in 40 artificial irrigationponds constructed in a semi-arid region, and the most suitable conditions to maintain these enclaves asbiodiversity spots were studied for the first time. a total of 104 species were detected. bacillariophyta,cyanobacteria and chlorophyta dominated both pelagic and benthic microphytic communities, ...

Journal: :international journal of nano dimension 0
a. rastkar ebrahimzadeh molecular simulation lab, azarbaijan shahid madani university, tabriz, iran. m. abbasi molecular simulation lab, azarbaijan shahid madani university, tabriz, iran. j. jahanbin sardroodi molecular simulation lab, azarbaijan shahid madani university, tabriz, iran. s. afshari molecular simulation lab, azarbaijan shahid madani university, tabriz, iran.

adsorption of no2 molecule on pristine and n-doped tio2 anatase nanoparticles have been studied using the density functional theory (dft) technique. the structural properties (such as bond lengths and bond angles) and the electronic properties (such as density of states, band structures and atomic partial charges) have been computed for considered nanoparticles. the results show that, the adsor...

Journal: :physical chemistry research 0
heydar ali shafiei gol university of sistan and baluchestan mehdi noura university of sistan and baluchestan, zahedan, iran.

the storage capacity of hydrogen on na-decorated born nitride nanotubes (bnnts) is investigated by using density functional theory within quantum espresso and gaussian 09. the results obtained predict that a single na atom tends to occupy above the central region of the hexagonal rings in (5,0) and (3,3) bnnt structures with a binding energy of -2.67 and -4.28 ev/na-atom respectively. when a si...

Journal: :acta medica iranica 0
hamidreza aghaei-meybodi endocrinology and metabolism research center, endocrinology and metabolism clinical sciences institute, tehran university of medical sciences, tehran, iran. negin rashidi endocrinology and metabolism research center, endocrinology and metabolism clinical sciences institute, tehran university of medical sciences, tehran, iran. mahdi montazeri endocrinology and metabolism research center, endocrinology and metabolism clinical sciences institute, tehran university of medical sciences, tehran, iran. abbasali keshtkar osteoporosis research center, endocrinology and metabolism clinical sciences institute, tehran university of medical sciences, tehran, iran. patricia khashayar osteoporosis research center, endocrinology and metabolism clinical sciences institute, tehran university of medical sciences, tehran, iran.

the present study assessed the real life therapeutic effects of weekly doses of alendronate in treating a group of osteoporotic patients in iran. the present historical cohort was conducted on patients who had undergone two or more bone mineral densitometry within an interval of 1.5-2 years in shariati hospital bone mineral density department between 2002 and 2010.patients were asked by phone a...

javad Behboodian, Maryam Sharafi,

We present a new skew-normal distribution, denoted by NSN($lambada$). We first derive the density and moment generating function of NSN($lambada$). The properties of SN($lambada$), the known skew-normal distribution of Azzalini, and NSN($lambada$) are compared with each other. Finally, a numerical example for testing about the parameter $lambada$ in NSN($lambada$) is given. ...

Journal: :international journal of environmental research 2010
s. mavaddati m.h. kianmehr i. allahdadi g.r. chegini

determination of physical properties of municipal waste compost is necessary to obtain the parameters related to designing and constructing a suitable pelleting machine for producing compost pellets. the purpose of this study is determining some physical properties such as; bulk density, coefficient of friction, porosity, angle of repose for compost and density and expansion for compost pellets...

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