نتایج جستجو برای: straight chain alkanes n
تعداد نتایج: 1260900 فیلتر نتایج به سال:
CYP153, one of the most common medium-chain n-alkane hydroxylases belonging to the cytochrome P450 superfamily, is widely expressed in n-alkane-degrading bacteria. CYP153 is also thought to cooperate with AlkB in degrading various n-alkanes. However, the mechanisms regulating the expression of the protein remain largely unknown. In this paper, we studied CYP153 gene transcription regulation by ...
Eight electronic properties; HUMO, LUMO, HOMO-LUMO energy gap, dipole moment point-charge, hybrid, molecular weight, heat of formation and zero-point 60 normal branched alkanes were examined using topology indices. All the properties calculated semi-empirical self-consistent orbital theory. The relationship calculation with seven models indices based on degree and/or distance obtained in terms ...
The hydrothermal sediments of Guaymas Basin, an active spreading center in the Gulf of California (Mexico), are rich in porewater methane, short-chain alkanes, sulfate and sulfide, and provide a model system to explore habitat preferences of microorganisms, including sulfate-dependent, methane- and short chain alkane-oxidizing microbial communities. In this study, hot sediments (above 60°C) cov...
Volatile organic compounds (VOCs) have a negative effect on both humans and the environment; therefore, it is crucial to minimize their emission. The conventional solution catalytic oxidation of VOCs by air; however, in some cases this method requires relatively high temperatures. Thus, short-chain alkanes, which demonstrate lowest reactivity among VOCs, starts at 250–350 °C. This research deal...
The Nepal Himalayas is the source of many glacial and spring-fed river systems crisscrossing mountainous terrain. There an increasing recognition small mountain rivers (SMRs) to have a significant combined export dissolved particulate organic carbon global flux. We analyzed fluvial sediments from two SMRs compared results with large (LMRs) in Nepal. investigated matter (OM), its compositional v...
Molecular geochemical methods have shown that it is often dicult to dierentiate between coaland interbedded shale-sourced oils, even though coals and interbedded shales may exhibit considerable organic in ̄ux variation (e.g. land plant vs algal organic matter) due to the changes of depositional setting. However, compound-speci®c stable carbon isotopic compositions are sensitive to the source i...
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