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Published in Natan B. Vargaftik, Lev P. Filippov, Amin A. Tarzimanov, Evgenii E. Totskii, Yu. A. Gorshkov, Handbook of Thermal Conductivity of Liquids and Gases, 2020
Natan B. Vargaftik, Lev P. Filippov, Amin A. Tarzimanov, Evgenii E. Totskii, Yu. A. Gorshkov
1,2–Dicyclohexyl cyclohexane (o–tercyclohexane) C18H32. The thermal conductivity of liquid at a pressure of 0.1 MPa in a temperature range from 340 to 380 K has a constant value of 0.108 W/(m · K).
Comparison of biodegradation of lubricant wastes by Scenedesmus vacuolatus vs a microalgal consortium
Published in Bioremediation Journal, 2019
Stella Beverly Eregie, Sumaiya F. Jamal-Ally
After week 1, 25 chemical compounds were present compared to the control. p-Xylene was most abundant while 2,3-Dimethyldodecane was least abundant. An increase and decrease in hydrocarbon concentration were observed. New compounds such as cyclohexane methyl, dodecane, hexane,1,6-dicyclohexyl, tetrapentacontane,1,5,4-dibromo, dodecane,4-methyl, decane,2,3,7-trimethyl, dodecane,4,6-dimethyl, tetradecane, tridecane,4-cyclohexyl, tridecane,4-methyl, 2,3-dimethyldodecane, and hexadecane,2,6,10,14-tetramethyl were formed. In addition, change in chemical compounds and isomers of different compounds were also observed. Dodecane,4-methyl, decane,2,3,7-trimethyl were found to be isomers of tridecane, tridecane,4-methyl, and 2,3-dimethyldodecane were found to be isomers of tetredecane, hexane,2,4-dimethyl, hexane,3,3-dimethyl, hexane,2,3-dimethyl, hexane,3,4-dimethyl and heptane,3-methyl were observed to be isomers of octane. Whilst, heptane, 2,4-dimethyl was isomer of nonane.
Determination of bacterial intracellular and extracellular biotransformation compounds and biodegradation of kerosene based industrial rolling oils via gas chromatography-mass spectrometry
Published in Bioremediation Journal, 2019
Nyashadzashe P. Masvingwe, Sumaiya F. Jamal-Ally
After week 3, an increase to 23 metabolic compounds again affirmed metabolic biotransformations as was the case when treated with A. aegrifaciens. Hexane, 2,5-dimethyl; Hexane, 3,4-dimethyl and Nonane were completely transformed. The new compounds formed included: Cyclohexane, methyl; Ethyl isocyanoacetate; Cyclopentane, 1-ethyl-3-methyl-, trans; Undecane, 4,7-dimethyl; Hexane, 1,6-dicyclohexyl; 1-Dodecanol, 2-octyl; Decane, 2,3,7-trimethyl; Dodecane, 4,6-dimethyl; Tridecane, 4-cyclohexyl; Hexadecane, 2,6,10,14-tetramethyl and Dodecanoic acid, methyl ester. Once again most resistant compound was p-Xylene as shown (area % value of 22.82). The least prominent compound was Undecane, 4,7-dimethyl- with an area % value of 0.71, indicating its biotransformation after three weeks.
Synthesis and properties of (−)-menthol-derived chiral liquid crystals by introducing adipoyloxy spacer between mesogenic core and chiral menthyl
Published in Liquid Crystals, 2018
Zhao-Xia Zhu, Cong-Cong Luo, Ji-Wei Wang, Jian-She Hu, Ying-Gang Jia
Esterification of alkoxybenzoic acid with intermediate 3 was catalysed by N,N′-dicyclohexyl carbodiimide (DCC) and N,N′-dimethylaminopyridine (DMAP) to prepare the target compounds 4′-(6-menthyloxy-6-oxohexanoyloxy)biphenyl-4-yl 4-alkoxybenzoate (M6BnB, n = 2, 4, 6, 8, 10, 12, 14, 16, 18). The synthetic steps of the all LC compounds M6BnB have been depicted in the Scheme 1 and the detailed synthetic procedures were described below.