نتایج جستجو برای: chemical absorption

تعداد نتایج: 499616  

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

one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

Journal: :به زراعی کشاورزی 0
مهدی رمضانی دانشجوی دکتری زراعت، دانشکدة کشاورزی، دانشگاه گیلان، رشت – ایران سید محمدرضا احتشامی استادیار گروه زراعت، دانشکدة کشاورزی، دانشگاه گیلان، رشت - ایران محسن شریفی دانشیار، گروه علوم گیاهی، دانشکدة علوم زیستی، دانشگاه تربیت مدرس، تهران - ایران محمدرضا چائی چی استاد گروه زراعت، دانشکدة کشاورزی، دانشگاه تهران، کرج - ایران

in order to investigate the effect of different levels of biofertilizer inoculation and phosphorus chemical fertilizer on mineral elements absorption in forage corn sc. 540 under humidity regimes, an experiment was conducted as line source based on a randomized completele block design with three replications during two growing seasons of 2012 and 2013. the implementation of line source was appl...

Journal: :iranian journal of oil & gas science and technology 2014
ehsan rahmandoost behrooz roozbehani mohammad hosein maddahi

co2 emissions from combustion flue gases have turned into a major factor in global warming. post-combustion carbon capture (pcc) from industrial utility flue gases by reactive absorption can substantially reduce the emissions of the greenhouse gas co2. to test a new solvent (ait600) for this purpose, a small pilot plant was used. this paper presents the results of studies on chemical methods of...

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

we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...

At the present theoretical study, DFT calculations were performed for elucidating thereaction, absorption energy and the quantum molecular descriptors including electronic chemical potential, chemical hardness, Homo, Lumo, band gap energy (Eg) and finding the most active nitrogen-doped graphene sheet (N-G) for absorption H2S, CH4, N2 and CO2 gases. Finally it found that nitrogen-doped gra...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1993
abdol hossein jahanmiri akbar eghbalpoor

in order to increase the rate of gas absorption, chemical reaction in the liquid phase is considered. the purpose of this paper was to simulate gas absorption process by a liquid film over a spherical packing incorporating eddy viscosity and diffusivity. second order chemical reaction for two different cases (fast and slow) were considered. the system partial differential equations obtained was...

Journal: :JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1974

Abdol Hossein Jahanmiri Akbar Eghbalpoor

In order to increase the rate of gas absorption, chemical reaction in the liquid phase is considered. The purpose of this paper was to simulate gas absorption process by a liquid film over a spherical packing incorporating eddy viscosity and diffusivity. Second order chemical reaction for two different cases (fast and slow) were considered. The system partial differential equations obtained...

Journal: :Chemical communications 2012
Shicheng Yan He Yu Nanyan Wang Zhaosheng Li Zhigang Zou

Considering light absorption by narrowing the band gap and gas capture by the mesostructure and basicity of material, an efficient artificial photosynthesis system was constructed based on a mesoporous ZnAl(2)O(4)-modified ZnGaNO photocatalyst.

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