نتایج جستجو برای: octadecane

تعداد نتایج: 157  

Journal: :International Journal of Heat and Mass Transfer 2021

The use of nano phase change material in thermal energy storage applications appears promising, but the often-poor performance and lack understanding heat transfer mechanisms interconnectedness remains a challenge hinders their widespread integration. existing numerical work has unveiled numerous impediments predicting actual melting behaviour. They rarely combine effects conduction enhancement...

Journal: :Chemical & pharmaceutical bulletin 1999
B S Reddy V D Rao B S Rao N Dhananjaya R Kuttan T D Babu

Two new sphingolipids, (2S,3S,4R)-1,3,4-trihydroxy-2-[((R)-2'-hydroxytetradecanoyl) amino] tricosane (4) and (2S,3S,4R)-1,3,4-triacetoxy-2-[((R)-2'-acetoxyoctadecanoyl) amino]octadecane (5) along with africanene (1, reasonably good yield), 23-demethylgargosterol (2) and batylalcohol (3) have been isolated from the soft coral Sinularia leptoclados. Preliminary studies for pharmacological activit...

Journal: :Analytical chemistry 2001
S Puri J S Chickos W J Welsh

The vaporization enthalpies of 16 polychlorinated biphenyls have been determined by correlation gas chromatography. This study was prompted by the realization that the vaporization enthalpy of the standard compounds used in previous studies, octadecane and eicosane, were values measured at 340 and 362 K, respectively, rather than at 298 K. Adjustment to 298 K amounts to a 7-8 kJ/mol increment i...

Journal: :Nanoscale 2017
Bing Ma Huimei Cui Darui Wang Peng Wu Chen Zhao

Ni based catalysts are wildly used in catalytic industrial processes due to their low costs and high activities. The design of highly hierarchical core-shell structured Ni/HBEA is achieved using a sustainable, simple, and easy-tunable hydrothermal synthesis approach using combined NH4Cl and NH3·H2O as a co-precipitation agent at 120 °C. Starting from a single-crystalline hierarchical H+-exchang...

Journal: :Journal of bacteriology 1974
M A Patrick P R Dugan

The effects of hydrocarbons and hydrocarbon derivatives as growth substrates on the polar lipid fractions of an Acinetobacter isolate were studied. Tetradecane, hexadecane, and octadecane resulted in the incorporation of substantial quantities of equivalent-chain-length fatty acids into cellular lipids. Cells cultured on nonane, the only odd-numbered alkane tested, contained both odd- and even-...

Journal: :Вестник Башкирского университета 2019

Journal: :Journal of bacteriology 1998
A Ratajczak W Geissdörfer W Hillen

In Acinetobacter sp. strain ADP1, alkane degradation depends on at least five essential genes. rubAB and xcpR are constitutively transcribed. Here we describe inducible transcription of alkM, which strictly depends on the presence of the transcriptional activator AlkR. alkR itself is expressed at a low level, while a chromosomally located alkM::lacZ fusion is inducible by middle-chain-length al...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید