نتایج جستجو برای: Organic compounds

تعداد نتایج: 401498  

Journal: :journal of research in health sciences 0
mohammad reza samarghandi seyed alireza babaee mohammad ahmadian ghorban asgari farshid ghorbani shahna ali poormohammadi

background: toluene is a volatile organic compound, one of 189 hazardous air pollutants (hap s ) and the most important pollutant found in most industries and indoor environments; owing to its adverse health, toluene must be treated before being released into the environment. methods : in this research study, a continuous-flow system (including an air compressor, silica gel filters and activate...

Journal: :journal of research in health sciences 0
rohollah maghsoodi moghadam abdulrahman bahrami farshid ghorbani hossein mahjub dariush malaki

background: volatile organic compounds (vocs) are human-made chemicals widely spread in the environment and produced by petrochemical industries and petroleum refineries. the aim of this research was to evaluate the distribution of vocs in the ambient air of mahshahr petrochemical complex, iran. methods: this study was a cross-sectional research performed in 2009. we used the method numbered 15...

Journal: :international journal of occupational hygiene 0
abdulrahman bahrami department of occupational health, research centre for health sciences, school of public health, hamedan university of medical sciences, hamedan hosien mahjub 2department of biostatics and epidemiology, research centre for health sciences, school of public health, hamedan university of medical sciences, hamedan, iran marzieh sadeghian department of occupational health, research centre for health sciences, school of public health, hamedan university of medical sciences, hamedan, iran farideh golbabaei department of occupational health, faculty of health, tehran university of medical sciences, tehran, iran

a new method for analysis of benzene, toluene, and xylene (btx) using high performance liquid chromatography-uv detection (hplc-uv) is described and compared to the gas chromatography (gc) method. a charcoal adsorption tube connected to a small pump was used to obtain samples from an atmosphere chamber standard. samples were extracted with methanol and analyzed by hplc-uv. chromatography was is...

2005
SATU OJALA Riitta L. Keiski Leonid Kustov

This thesis describes efforts made on the development of an existing catalytic incinerator. The development work, called process characterization, consists of four general parts. These are the development of measurement methodology, the studying of construction materials, the selection of suitable catalysts and the testing of the effects of process operation conditions. The two application area...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه شیمی و مهندسی شیمی ایران - پژوهشکده موادآلی و طبیعی 1389

در این پروژه ترکیبات 3-آریل-2h-بنزو[b]-4،1-اکسازین ها از مواد اولیه تجاری مشتقات دو آمینو فنول و ?-هالو کتون های آروماتیک در مایع یونی 1-اکتیل-3-متیل ایمیدازولیوم تترا فلورو بورات([omim]bf4) سنتز شده است. این واکنش توسط باز پتاسیم کربنات محلول از طریق o-آلکیلاسیون و سپس یک واکنش آمیداسیون درون مولکولی خود بخود در مدت زمان کوتاه انجام می شود. ترکیبات 4،1-بنزوکسازین به این روش با بهره خوب تا آلی ...

Journal: :ACS applied materials & interfaces 2016
Minoo Bagheri Mohammad Yaser Masoomi Ali Morsali Alexander Schoedel

A dye-sensitized metal-organic framework, TMU-5S, was synthesized based on introducing the laser dye Rhodamine B into the porous framework TMU-5. TMU-5S was investigated as a ratiometric fluorescent sensor for the detection of explosive nitro aromatic compounds and showed four times greater selectivity to picric acid than any state-of-the-art luminescent-based sensor. Moreover, it can selective...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان فارس - دانشکده دندانپزشکی 1387

چکیده ندارد.

Journal: :Annali dell'Istituto superiore di sanita 2009
Anna Santarsiero Sergio Fuselli Alessandro Piermattei Roberta Morlino Giorgia De Blasio Marco De Felice Emanuela Ortolani

The assessment of indoor air volatile organic compounds (VOCs) concentration levels in dental settings has a big health relevance for the potentially massive occupational exposure to a lot of diverse contaminants. The comparison of the VOCs profile relative to indoor conditions and to the corresponding outdoor concentrations, as well as the discovery of possible correlations between specific de...

2005
Sylviane Lesieur Thierry Prangé Dominique Durand Michel Ollivon Geneviève Le Bas Ayesha Jacobs Luigi R. Nassimbeni Benjamin Taljaard

C288 this compound is crystallized from solutions in acethophenone as a host-guest complex with a ratio 2:3. In the crystal structure DEDA molecules form infinite chains in a direction [01-1] through a pair of centrosymmetric hydrogen bonds. The acethophenone molecules are situated inside different channels formed at stacking of these chains and running along [100] and [0-11] directions. At dec...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید