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...

An efficient 1,2-deoxygenation method, involving an unexpected mechanism, was found for simple diols and for biomass-derived polyols (glycerol and erythritol) that results in the conversion of the 1,2-dihydroxy group to a carbon-carbon double bond.

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...

Cyclooctatetraene (COT) derived bicyclo[4.2.1]nona-2,4,7-trien-9-one has been recognized as a cyclooctane carbasugar equivalent and elaborated to a range of cyclooctane polyols (cyclooctitols) through a flexible strategy with moderate regio- and stereo-control.

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.

Introduction and purpose: Even though sweeteners’ popularity is increasing as they are approved by the Food Drug Administration (FDA) generally considered to be safe, their whole impact on human body still confusing. Polyols among one of most used sweeteners, therefore in this review we will focus gut microbiome community various bacteria influences many aspects overall health. Brief descriptio...

We show that urea inhibits the ATPase activity of MgATP submitochondrial particles (MgATP-SMP) with Ki = 0.7 M, probably as a result of direct interaction with the structure of F0F1-ATPase. Counteracting compounds (sorbitol, mannitol or inositol), despite slightly (10-20%) inhibiting the ATPase activity, also protect the F0F1-ATPase against denaturation by urea. However, this protection was onl...

Standing litter of emergent macrophytes often forms a major portion of the detrital mass in wetland habitats. Microbial assemblages inhabiting this detritus must adapt physiologically to daily fluctuations in temperature and water availability. We examined the effects of various environmental conditions on the concentrations of osmoregulatory solutes (polyols and trehalose) and the respiratory ...