نتایج جستجو برای: its temperature

تعداد نتایج: 2335488  

Journal: :علوم و تکنولوژی پلیمر 0
بهروز صالح پور بهرام قره باغی

polymer-graphite powder composite behaves as a low-conductive material which can be used as an automatic fuse for adhesive connector in electrical circuits. the conductivity of this composite, below its transition temperature, tt, depends on concentration of carbon powder, slowly decreases as the temperature increases. meanwhile, the electrical resistivity of this material in transition tempera...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی شیمی 1391

attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...

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

in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...

Changes in ground surface temperature in the city of Halle and its relationship with changes in the NDVI index abstract The temperature of the urban environment is one of the parameters that citizens are in contact with at any moment. Studies show that the global temperature is constantly increasing due to environmental changes. One of these parameters that affect the increase in temperature;...

Journal: :journal of dental research, dental clinics, dental prospects 0
aldo del carpio-perochena bauru dental school, university of sao paulo clovis monteiro bramante marco hungaro duarte flaviana bombarda de andrade marcia zardin graeff marina marciano da silva

background and aims. increasing the temperature of sodium hypochlorite (naocl) enhances its dissolution and antibacterial properties. however, the high resistance of multi-species biofilms could restrict the effect of the solution regardless of its temperature, enabling the long-term recovery of the surviving bacteria. the aim of this study was to investigate if the increase of temperature of n...

Journal: :Journal of the Korea Institute of Military Science and Technology 2015

Journal: :علوم و تکنولوژی پلیمر 0
مهدی کرمی قهی محمدحسین بهشتی مسعود اسفنده امیرمسعود رضادوست

phenolic resin is among the oldest thermoset resins that have found wide spread applications in several industries, largely due to its high thermal resistance. in this research, room temperature curing of phenolic resin and its reinforced silica composite has been investigated by p-toluene sulphonic acid as a catalyst. mechanical properties of the composites such as impact strength, flexural pr...

Journal: :Molecular Simulation 2021

The earliest molecular dynamics simulations relied on solving the Newtonian or equivalently Hamiltonian equations of motion for a system. While pedagogically very important as total energy is preserved in these simulations, they lack any relationship with real-life experiments, most tests are performed constant temperature environment that allows exchanges. So, within framework dynamics, evolut...

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