نتایج جستجو برای: carbon resourse

تعداد نتایج: 281245  

Journal: :international journal of energy and environmental engineering 2010
s aber m zarei a niaei h joshani koshky

carbon dioxide is a major greenhouse gas that contributes to the global warming by more than %60. absorption has been widely used to treat high concentrations of co2 in synthesis gas production, hydrogen manufacturing, and natural gas processing. the most well established method to capture co2 is its removal by absorption into amine solutions in the presence of activators. in this research, co2...

Journal: :journal of advances in environmental health research 0
zohreh khodaei dietary supplements and probiotic research center and department of biochemistry, genetic, and nutrition, alborz university of medical sciences, karaj, iran mahbobeh mehrabani dietary supplements and probiotic research center and department of biochemistry, genetic, and nutrition, alborz university of medical sciences, karaj, iran enayatollah kalantar department of microbiology and immunology, alborz university of medical sciences, karaj, iran parisa darabi dietary supplements and probiotic research center alborz university of medical sciences, karaj, iran afshin maleki environmental health research center, kurdistan university of medical sciences, sanandaj, iran

in the present study, carbon species including organic carbon (oc), elemental carbon (ec), and water-soluble organic carbon (wsoc) concentration in pm2.5 were assessed at an urban site of tehran, iran during march to june 2014. the pm2.5 samples were collected using an frmomnitm ambient air sampler. thermal gravimetric analysis (tga) was used to analyze oc and ec. the results showed that pm2.5 ...

Journal: :transport phenomena in nano and micro scales 2013
s. rashidi m.a. fanaei a. ahmadpour

carbon nanostructures are famous structures which are used in several industries such as separation, treatment, energy storage (i.e. methane and hydrogen storage), etc. a successful modeling of activated carbon preparation is very important in saving time and money. there are some attempts to achieve the appropriate theoretical modeling of activated carbon preparation but most of them were almo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده سرامیک 1385

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1387

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

Journal: :nanochemistry research 2016
mohammad mazloum-ardakani abolfazl naser-sadrabadi alireza khoshroo

in the present paper, the use of a novel carbon paste electrode modified by 7,8-dihydroxy-3,3,6-trimethyl-3,4-dihydrodibenzo[b,d]furan-1(2h)-one (dtd) and oxidized multi-walled carbon nanotubes (ocnts) is described for determination of levodopa (ld), acetaminophen (ac) and tryptophan (trp) by a simple and rapid method. at first, the electrochemical behavior of dtd is studied, then, the mediated...

Journal: :desert 2013
h. joneidi jafari

this study analyzed the relationship between the vertical distribution of root biomass and soil organic carbon (soc)content in the arid shrub lands of semnan province in iran. three sites were selected based on differences in canopy coverof artemisia sieberi (5%, 10% and 15%). average density of shrubs, root biomass and soc were determined at differentdepths (0-20, 20-40, 40-60, 60-80 cm) in 20...

Journal: :علوم و تکنولوژی پلیمر 0
مریم حاجی حسینی آرش پیامی سیدرضا غفاریان امیرمسعود رضادوست

in the processing of carbon/carbon composites using polymer resin as the matrix precursor, it is inevitable that a porous structure was formed after carbonization. as a result, densification by liquid phase impregnation followed by recarbonization is required to obtain a densified composite. consequently, the char formability of resin is an important factor in reducing the number of densificati...

Journal: :international journal of iron & steel society of iran 2005
hong-sheng fang qi li zhi-gang yang bing-zhe bai dong-yu liu

the unique properties of air-cooled bainitic steels have been described. a series of mn containing air-cooled bainitic steels invented by authors is presented in this paper: including low carbon granular bainitic steels, low carbon grain-boundary allotriomorphic ferrite/granular bainite duplex steels, medium and medium high carbon bainite/martensite duplex steel, and low carbon carbide free bai...

Journal: : 2023

The article analyzes semantic and axiological transformations of the classical fairy-tale plot «Cinderella» being observed in such verbal creolized texts Runet distractive discourse as anecdotes, jokes, statuses, demotivators, memes. These anonymous variative speech products are regarded samples so called «naive» gender knowledge. Being an inalienable part Russian Internet discourse, they const...

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