Abstract Ice clouds containing benzene (C 6 H ) have recently been detected in the stratosphere at south pole of Titan. Their subsequent aging process induced by long-UV solar photons could lead to a photoreactivity that may release some volatile organic compounds gas phase. The characterization this fraction coming from photoprocessing ( λ > 230 nm) such icy C has characterized chromatograp...

Ethnochemistry is the study of chemical practices by specific cultural groups that are used for activities following ideology community, including Banjarese community. Banjar ethnochemistry can be integrated into science learning, especially Indonesia’s senior high school chemistry learning context. This aims to analyze results exploring local wisdom which included in ethnochemistry, and take a...

Undi, M., Wilson, C., Ominski, K. H. and Wittenberg, K. M. 2008. Comparison of techniques for estimation of forage dry matter intake by grazing beef cattle. Can. J. Anim. Sci. 88: 693 701. Four techniques were compared for their ability to estimate forage dry matter intake (DMI) of grazing animals. In the Cage technique, 10 grazing cages were placed within each pasture, and forage inside and ou...

Differences in molecular size and shape have long been known to cause difficulties the modeling and simulation of fluid mixture behavior and generally manifest themselves as poor predictions of densities and phase equilibrium, often resulting in the need to regress model parameters to experimental data. A predictive approach to molecular geometry within the Gibbs–Helmholtz Constrained (GHC) fra...

[Introduction] CH bonds are the most ubiquitous functional group in organic compounds. CH in a neutral molecule is generally regarded as aprotic because of its low acidity. Recently, we have demonstrated the CH bonds in the cationic ethers [1, 2] and amines [3] are highly acidic. In these cations, the acidities of CH bonds are enhanced through the hyperconjugation of the CH bond with the nonbon...

AlkB and CYP153 are important alkane hydroxylases responsible for aerobic alkane degradation in bioremediation of oil-polluted environments and microbial enhanced oil recovery. Since their distribution in nature is not clear, we made the investigation among thus-far sequenced 3,979 microbial genomes and 137 metagenomes from terrestrial, freshwater, and marine environments. Hundreds of diverse a...

Microporous metal–organic frameworks (MOFs), which are new types of zeolite analogues, have been paid extensive attention because of their potential applications in gas storage, separation, and catalysis. The modular construction of MOFs allows their pore size and shape to be systematically tuned by the judicious choice of metal-containing secondary building units (SBUs) and/or bridging linkers...

By analyzing genetic similarity of rhodococci actinobacteria seven phylogenetic groups are allocated on the base alkane- 1-monooxygenases sequences. R. qingshengii F2-2 genome have been shown to alkane-1-monooxygenase genes affiliated five different types. We assume use diversity as a molecular marker identify Rhodococcus species.

BACKGROUND Volatile organic compounds (VOCs) in breath may contain biomarkers of active pulmonary tuberculosis derived from the infectious organism (metabolites of Mycobacterium tuberculosis) and from the infected host (products of oxidative stress). METHODS We analyzed breath VOCs in 226 symptomatic high-risk patients in USA, Philippines, and UK, using gas chromatography/mass spectroscopy. D...