Molecular-dynamics simulations are used to gain insights on recent sum-frequency spectroscopy and polarised neutron reflectometry measurements of the structure of hexadecylamine films adsorbed on iron-oxide surfaces in dodecane and hexadecane. Simulations were carried out under quiescent and high-shear conditions. Mass-density profiles, molecular-height and molecular-orientation probability dis...

The thermal stability of horseradish peroxidase suspensions was studied in three organic solvents of different hydrophobicity (dodecane, octane, and 1-octanol) at three different water contents (14.1, 55.3 and 256.2 mg water g dry protein). In these conditions, the enzyme is much more stable than in aqueous solutions (inactivation temperatures were in the range of 125–1508C). The enzyme showed ...

This work was aimed at isolating and characterising biosurfactant producing bacteria strain from diesel oil contamination sites. The potential of the to degrade n-alkanes further studied. Soil samples were collected rich areas, identified strains grown on minimal media that contained as only carbon source. Enrichment culture technique used identify bacteria. Seventeen based their capacity use O...

The asymmetric unit of the title compound, C12H12Cl4O2, contains two crystallographically independent mol-ecules with almost identical conformations (r.m.s. overlay fit for the non-hydrogen atoms = 0.059 Å). In each mol-ecule, the central eight-membered ring has a distorted boat configuration, and two non-planar four-membered rings are fused on either side of the eight-membered ring. A weak C-H...

The title compound, C(19)H(18)O(4), exhibits a long C-C bond [1.575 (2) Å] in the cage structure. In the crystal, pairs of O-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers. C-H⋯O inter-actions also occur.

The title compound, C(7)H(7)N(11)O(11)·C(3)H(6)O, consisting of one mol-ecule of 10-formyl-2,4,6,8,12-penta-nitro-2,4,6,8,10,12-hexa-azatetra-cyclo-[5.5.0.0(5,9).0(3,11)]dodecane (penta-nitro-mono-form-yl-hexa-aza-isowurtzitane, PNMFIW) and one acetone solvent mol-ecule, is a member of the caged hexa-azaisowurtzitane family. PNMFIW has a cage structure which is constructed from one six-membered...

We report here on the manufacturing methods for emulsifier-free (EF-) oil-in-water (O/W) emulsions, in which oil and water were mechanically mixed absence of any emulsifiers such as surfactants. A commercially available bath-type ultrasonic cleaner (Bath-US; 42 kHz, 26 W) did not disperse dodecane (DD) completely even by treatment 15 min, average diameter DD droplets EF-dodecane-in-water (DD/W)...

The crystal structure of the title compound, C(9)H(12)O(4)S, was determined in order to investigate the effect of the eclipsed O atoms on the bond length of the vicinal quaternary C atoms. The two quaternary C atoms of the noradamantane skeleton and the two O atoms to which they are connected all located essentially in the same plane (maximum deviation = 0.01 Å), resulting in an eclipsed confor...