نتایج جستجو برای: hydration

تعداد نتایج: 15361  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

Journal: :journal of physical & theoretical chemistry 2004
k. zare n. karimi r.l savadi a. abedi m.a. sevedsadiadi

the molecular geometry of complex of adenine with 8 water molecules was calculated with hartree-fock (hf). the standard 6-31g(d) basis set has been employed. the existence of c-h…o hydrogen bonds between the water molecules and the hydrophobic part of nucleobase is stablished. we optimized structures and computed interaction energies of all complexes of adenine with water molecules step by step...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...

Journal: :The Annals of occupational hygiene 2010
Veronica S Miller Graham P Bates

Throughout the world, large numbers of manual workers perform physically demanding labour in conditions of high environmental heat stress. Although the importance of adequate hydration in combating heat stress is universally recognized, studies in a range of worker groups have demonstrated a disturbingly poor hydration level in a high proportion of at-risk workers. Management of work in hot env...

ZHANG S., ,

Hydration behavior and antioxidising effect of aluminium (AI) powder has been investigated. Bayerite Al (OH) 3 product layers formed on Al in pure water at 25-45°C were porous, so the hydration rate, although very slow at 25°C, increased rapidly with increasing temperature from 25 to 45°C. On further increasing temperature from 45 to 95°C, initial hydration rate increased, but changed little ov...

Journal: :journal of research in medical sciences 0
alireza shaygan-nejad abdol rahim masjedizadeh ali ghavidel morteza ghojazadeh manouchehr khoshbaten

background: pancreatitis is a serious complication of endoscopic retrograde cholangiopancreatography (ercp) and may cause significant morbidity and even death. there is no effective prophylactic intervention for patients with average risk yet. this study aims to investigate preventive effect of aggressive hydration for post-ercp pancreatitis. materials and methods: in a double-blind controlled ...

Background: Cisplatin is an antineoplastic agent used to treat many malignancies; however, the main side effect of cisplatin is nephrotoxicity. The aim of this study was to evaluate the effect of hydration therapy with and without magnesium on prevention of cisplatin-induced nephrotoxicity. Methods: This retrospective study was performed on 46 patients with malignancy who were candidate to rec...

This article addresses the interplay between heat of hydration and physico-mechanical properties of calcium sulfate hemi-hydrate in the presence of retarding additives such as citric and malic acids and sodium citrate. The heat of hydration was measured using a semi-isothermal calorimeter. Results proved that citric and malic acids had superior impact on hydration and mechanical properties. Whi...

Journal: :iranian journal of cancer prevention 0
m tahmasebi hr namazi

abstract eating and drinking are essential for life. there are clinical situations that artificial hydration is necessary. for dying patients artificial hydration looks useless and in many conditions could even be harmful (e.g. pulmonary edema in hypoalbuminemic patients). in our medical culture artificial hydration is a symbol of care to the patient and withholding it, is a very emotive issue,...

Journal: :iranian journal of materials science and engineering 0
e. najafi kani semnan university, 35196-45399, semnan, iran m. nejan semnan university, 35196-45399, semnan, iran a. allahverdi iran university of science and technology, narmak, tehran, iran

this article addresses the interplay between heat of hydration and physico-mechanical properties of calcium sulfate hemi-hydrate in the presence of retarding additives such as citric and malic acids and sodium citrate. the heat of hydration was measured using a semi-isothermal calorimeter. results proved that citric and malic acids had superior impact on hydration and mechanical properties. whi...

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