نتایج جستجو برای: chemical separation

تعداد نتایج: 493930  

2007
Mélanie Lagarrigue

Please direct correspondence to Pierre Gareil at [email protected]. he different conflicts of the 20th century were marked by the use of chemical weapons. Therefore, the Chemical Weapons Convention (CWC) was signed in 1993 and came into force in 1997 to prohibit the development, production, stockpiling, and use of chemical warfare agents (1). But today, the use of chemical weapons by terro...

Journal: :سلامت و محیط زیست 0
علی کولیوند a kulivand 1department environmental health engineering, school of public health, tehran university of medicalدانشکده بهداشت و انستیتو تحقیقات بهداشتی دانشگاه علوم پزشکی تهران، گروه مهندسی بهداشت محیط دانشجوی رامین نبی زاده r nabizadeh 1department environmental health engineering, school of public health, tehran university of medicalدانشیار و عضو هیئت علمی گروه مهندسی بهداشت محیط دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگاه احمد جنیدی جعفری a joneidy 1department environmental health engineering, school of public health, tehran university of medicalدانشیار و عضو هیئت علمی گروه مهندسی بهداشت محیط دانشکده بهداشت، دانشگاه علوم پزشکی ایران مسعود یونسیان m yunesian 1department environmental health engineering, school of public health, tehran university of medical- دانشیار و عضو هیئت علمی گروه مهندسی بهداشت محیط دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگا قاسمعلی عمرانی gh omrany 1department environmental health engineering, school of public health, tehran university of medicalاستاد و عضو هیئت علمی گروه مهندسی بهداشت محیط دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگاه علو

backgrounds and objectives:today, one of the most important environmental issues is solid waste produced in dentistry that because of the presence of hazardous, toxic and pathogen agents has special importance. in this survey, solid waste produced in hamadan dentistry laboratories and practical dentist offices is studied.materials and methods: in this descriptive study, from 24 dentistry labora...

Journal: :iranian journal of nuclear medicine 2006
fereidoon aflaki nader saemiyan gholamhossein shirvani maryam salahinejad

introduction: the mechanism of action and metabolism of clozapine, a complex drug used in psychopharmacology, is not completely understood. the effects of this compound in human body are related to some interactions with serotonin and dopamine neurotransmitter receptors. to further elucidate the mechanism of action and to support ongoing drug metabolism studies, [14c] clozapine with suitable ra...

2006
SHARON C. GLOTZER

The role of chemical reactions in the selection of patterns in phase-separating mixtures is presented. Linearized theory and computer simulation show that the initial long-wavelength instability characteristic of spinodal decomposition is suppressed by chemical reactions, which restrict domain growth to intermediate length scales even in the late stages of phase separation. Our findings suggest...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2002
M Criado-Sancho D Jou J Casas-Vázquez L F del Castillo

We study the shear-flow effects on phase separation of entangled polymer blends by incorporating into the chemical potential a nonequilibrium contribution due to the flow. The results are compared with those of a previous analysis by other authors which did not modify the chemical potential but used a different assumption for the stress tensor of the blend.

2017
Bin Yuan Matthew M. Coggon Abigail R. Koss Carsten Warneke

Emissions of volatile organic compounds (VOCs) from concentrated 1 animal feeding operations (CAFOs): chemical compositions and 2 separation of sources 3 Bin Yuan, Matthew M. Coggon, Abigail R. Koss, Carsten Warneke, Scott 4 Eilerman, Jeff Peischl, Kenneth C. Aikin, Thomas B. Ryerson, Joost A. de 5 Gouw 6 1. NOAA Earth System Research Laboratory (ESRL), Chemical Sciences Division, 7 Boulder, CO...

2015
P. S. Remya Devi A. A. Dalvi K. K. Swain R. Verma

Gold was determined in copper concentrate by an instrumental neutron activation analysis technique using the relative method. The determination was repeated by radiochemical and chemical neutron activation analysis with the aid of an anion exchange strategy for the chemical separation of gold from the matrix (Fe, Cu, and Zn). Irradiation of copper concentrate samples was carried out in APSARA r...

Using liquid membrane and, in particular, supported liquid membrane (SLM) is a novel method of separation in comparison to other methods such as adsorption, extraction and ion exchange. SLM is a combination of simultaneous extraction and disposal whose high efciency and capability is proven by many studies. So far, many researchers have utilized SLM in various scientifc...

ابراهیمی نصرآبادی, خسرو , رنجبرمقدم, فرشته , همام , سیدمسعود,

Extensive outcrops of metamorphic rocks is located in east of fariman (gandab) cantain andalusite schiste has been evaluted their potential as mineral deposite in this study. For this purpose, after preliminary studies of petrography and geochemistry, were performed processing tests including gravity and magnetic separation with aim of evaluation ability of production andalusite used in refract...

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