نتایج جستجو برای: hydrocarbon

تعداد نتایج: 20726  

2015
D. K. Sarkar M. Farzaneh

Nanosphere lithography (NSL) masks were created by spin-coating of polystyrene particles onto silicon surfaces. Fluorinated hydrocarbon films were coated on the nanosphere lithography masks using plasma-enhanced chemical vapor deposition (PECVD) to obtain ordered arrays of fluorinated hydrocarbon. Atomic force microscope images show hexagonally ordered nanodots of dimension 225 ± 11 nm with a h...

2015
B. Nogales

Members of the Roseobacter clade predominate in marine environments chronically polluted with hydrocarbons. Genomic analyses shows that these bacteria might possess up to six pathways for aromatic hydrocarbon degradation. Our hypothesis is that bacteria of the Roseobacter clade have genetic structures and strategies for degrading and tolerating hydrocarbons that are different from those of the ...

Journal: :Environmental science & technology 2004
Jackie M Aislabie Megan R Balks Julia M Foght Emma J Waterhouse

Antarctic exploration and research have led to some significant although localized impacts on the environment. Human impacts occur around current or past scientific research stations, typically located on ice-free areas that are predominantly soils. Fuel spills, the most common occurrence, have the potential to cause the greatest environmental impact in the Antarctic through accumulation of ali...

Journal: :Chemical communications 2011
Fátima García M Rosario Torres Emilio Matesanz Luis Sánchez

The morphology of the aggregates formed from the self-assembly of aryl triazole amphiphiles is disrupted upon the binding of a bromide anion due to the conformational changes experienced by these receptors.

Journal: :Organic & biomolecular chemistry 2009
Tom D Sheppard

Aryl halides are common synthetic targets themselves, and also highly versatile synthetic intermediates. Aryl chlorides are much more widely available and easier to synthesise than the other halide derivatives, so the development of effective methods for interconverting aryl halide derivatives would therefore be extremely useful. This article outlines which transformations are particularly desi...

Journal: :تحقیقات اقتصادی 0
علی امامی میبدی دانشیار و عضو هیئت علمی دانشکده ی اقتصاد، دانشگاه علامه طباطبائی علی فریدزاد دانشجوی دکتری اقتصاد نفت و گاز، دانشکده ی اقتصاد، دانشگاه علامه طباطبائی

natural gas is one of the hydrocarbon resources which is consumed vastly in the world. the asian and european markets, facing with a growing demand of hydrocarbon resources especially natural gas, are the most important consuming markets. hence, the security of natural gas supply is very important. based on the estimation of gas supply security index (gssi), the amount of vulnerability of selec...

2008
Trine Celius Steven Roblin Patricia A. Harper Jason Matthews Paul C. Boutros Raimo Pohjanvirta Allan B. Okey

Journal: :Chemical communications 2007
Shih-Lun Ku Xin-Ping Hui Chien-An Chen Yi-Ying Kuo Han-Mou Gau

Novel and highly efficient cross couplings of aryl bromides and chlorides with AlAr3(THF) (Ar = Ph, 2,4,6-Me3C6H2, 2-naphthyl or 4-Me3SiC6H4) catalyzed by the economic palladium catalyst of PCy3 are reported without the use of a base and under mild reaction conditions at room temperature or temperatures < or = 60 degrees C even for couplings of bulky aryl halides and the Al(2,4,6-Me3C6H2)3(THF)...

Journal: :FEMS Microbiology Letters 1998

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