摘要: These compounds were used to assess the accumulation history of a crude oil that was previously reported to contain a mixture of a severely biodegraded and a non-biodegraded crude oil.关键词: Crude oil Petroleum Biodegradation Alkylnaphthalenes Alkylphenanthrenes Retene 9-Methylretene 6-...
A series of aliphatic copolycarbonates poly(butylene-co-decamethylene carbonate)s (PBDCs), with weight-average molecular weights of 125000 to 202000 g mol1, were synthesized from dimethyl carbonate, 1,4-butanediol, and 1,10-decanediol via a two-step polycondensation process, using sodium ...
complex mixture (UCM)/n-alkane ratio, (d) the pristane/n-C17±versus the phytane/n-C18 ratio, (e) the methylnaphthalene ratio (MNR) versus a dimethylnaphthalene ratio (DNR-1), and (f) a trimethylnaphthalene ratio (TNR-2) versus the naphthalene/sum of methylnaphthalenes (N/ΣMN) ...
Syntheses and biodegradation of statistical copolymers of D , L -lactide ( D , L -LA) with trimethylene carbonate (TMC), rac -1-methyltrimethylene carbonate (1-MTMC) and 2,2-dimethyltrimethylene carbonate (2,2-DTMC) were investigated at various monomer ratios using SmMe(C 5 Me 5 ) 2 ...
A series of aliphatic oxalate-polycarbonate polyols (AOPC) was synthesized from dimethyl carbonate, 1,6-hexanediol, and diethyl oxalate, made from oxalic acid that is a kind of bio-based material, via melting polycondensation. The aliphatic polycarbonate-based polyurethanes with oxalate units (AOPCUs...
Syntheses and biodegradation of statistical copolymers of D,L-lactide (D,L-LA) with trimethylene carbonate (TMC), rac-1-methyltrimethylene carbonate (1-MTMC) and 2,2-dimethyltrimethylene carbonate (2,2-DTMC) were investigated at various monomer ratios using SmMe(C5Me5)2THF as an initiator ...
Diblock copolymerizations of L - or D,L -lactide (LA) with trimethylene carbonate (TMC) or 2,2-dimethyltrimethylene carbonate (2,2-DTMC) with SmMe(C 5 Me 5 ) 2 -(tetrahydrofuran) as an initiator and triblock copolymerizations of L - or D,L -LA/cyclic carbonates/ L - or D,L -...
Crystal structure and biodegradation of aliphatic polyester crystals. T Iwata,Y Doi. Macromolecular Chemistry Physics . 1999Iwata,T,Doi,Y.Crystal structure and biodegradation of aliphatic polyester crystals. Macromolecular Chemistry and Physics . 1999...
Biodegradation (aerobic/anaerobic) of Dimethyl Dodecyl Amine Oxide (DDAO). SETAC Congress: San Francisco, 1997. 74. Sanchez Leal, J. On the Toxicity and Biodegradation of Cationic Surfactants. Acta hydrochimica et hydrobiologica 1994, 22, 13-18. 75. Tezel, U.; Pierson, J.A.; Pavlostathis,...
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