نتایج جستجو برای: water properties

تعداد نتایج: 1372091  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یاسوج - دانشکده علوم 1391

in this investigation the effect of external field on the electron density of nanostructures of cds, cdse, cdte, gaas and polymeric structure of three, four, five and six units of cds as a kind of nanosolar cells has been studied theoretically. as modeling this system in nanodimension, molecular structures has used. specific properties of molecular structures permit us to consider different sym...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Journal: :journal of agricultural science and technology 2014
k. buksa r. ziobro a. nowotna g. adamczyk m. sikora

despite a highly beneficial role of water soluble arabinoxylans, the information about the effect of their addition on the properties of rye dough is lacking. the aim of this study was to check the influence of their modification methods and properties on water binding capacity of rye flour and suggest some possible explanations for the action of various fractions of arabinoxylans. three modifi...

Anayatollah Salimi Behzad Sharif Makhmal Zadeh Eskandar Moghimipour,

  Objective(s): The objective of this study was to design a topical microemulsion of Vit B12 and to study the correlation between internal structure and physicochemical properties of the microemulsions. Microemulsions are thermodynamically stable mixtures of water, oil, surfactants and usually cosurfactants with several advantages for topical and transdermal drug delivery. The formul...

N. Farhadian

In this work, a molecular dynamics simulation of the transport of water - methanol mixture through the single wall carbon nanotube (SWCNT) is reported. Methanol and water are selected as fluid molecules since water represents a strongly polar molecule while methanol is as an intermediate between polar and strongly polar molecules. Some physical properties of the methanol-water mixture such as r...

Journal: :علوم و تکنولوژی پلیمر 0
وحید حدادی الهام تقدیر محمدرضا اله قلی قصری بنفشه گرجی

bituminous emulsion insulators are types of bituminous emulsions groups composed of different grades of bitumen emulsified in water by bentonite and emulsifiers at 80-90oc. these emulsions are water resistant after drying andtheir physical and mechanical properties are superior in comparison to bitumen properties. iranian climate, because of variety and extreme variations in temperature imposes...

Journal: :annals of military and health science research 0
رویا احمدی roya ahmadi no 10, shahid sakhaii st., rabazeh st., east zam-zam st., abouzar blvd, piroozi st., tehran, iran. ماندانا پیراهن فروش mandana pirahan- foroush department of chemistry, faculty of basic sciences, islamic azad university, yadegar emam khomeini branch, tehran,iran.

purpose: to evaluate the effect of fullerene on chemical properties of naphazoline drug in   water by density functional theory (dft) methods.   materials and methods: naphazoline belongs to the imidazoline class of sympathomimetics.   the present study on naphazoline drug and its fullerene connected form were carried out using   computerized calculations of gaussian program in b3lyp/6-31g leve...

Journal: :journal of food and bioprocess engineering 0
marziye mirzakhani transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran sohrab moini transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran zahra emam-djomeh transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran

biological packaging material based on obtained proteins from fish waste, are biopolymers that have the capability of biodegradable film formation. thus, purpose of this research is to study and investigate some of films’ physical features made from trout fish myofibril protein. the film forming solution containing 1.5%, 2% and 2.5%(w/v)myofibril protein isolate of 100ml solution and glycerol a...

Journal: :مهندسی بیوسیستم ایران 0
حمیده سپردار دانش آموخته کارشناسی ارشد علوم و صنایع غذایی،گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد شهرکرد ابراهیم رحیمی دانشیار، گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه آزاداسلامی واحد شهرکرد ایمان شهابی قهفرخی استادیار گروه علوم و صنایع غذایی-دانشگاه زنجان

in the past decades, environmental pollution caused by plastic packing materials, restrictions of petroleum resources and their high price attracted many researchers to produce biodegradable packaging materials. poor mechanic properties and high water vapor permeability are two main defects of biodegradable polymers. nanotechnology is a modification method in this case. in the current study, th...

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