The inducible Mar phenotype of Escherichia coli is associated with increased tolerance to multiple hydrophobic antibiotics as well as some highly hydrophobic organic solvents such as cyclohexane, mediated mainly through the AcrAB/TolC efflux system. The influence of water miscible alcohols ethanol and 1-propanol on a Mar constitutive mutant and a mar deletion mutant of E. coli K-12, as well as ...

Neuronal nitric oxide synthase (NOS I) has been shown to generate nitric oxide (NO*) and superoxide (O(2)* during enzymatic cycling, and the ratio of each free radical is dependent upon the concentration of L-arginine. Using spin trapping and electron paramagnetic resonance spectroscopy, we detected alpha-hydroxyethyl radical (CH(3)*CHOH), produced during the NOS I metabolism of ethanol (EtOH)....

Molecular dynamics simulations and fluorescence anisotropy decay measurements are used to investigate the rotational diffusion of anthracene in two organic solvents—cyclohexane and 2-propanol—at several temperatures. Molecular dynamics simulations of 1 ns length were performed for anthracene in cyclohexane ~at 280, 296, and 310 K! and in 2-propanol ~at 296 K!. The calculated time constants for ...

Unraveling the complex interaction between catalysts and reactants under operando conditions is a key step toward gaining fundamental insight in catalysis. We report the evolution of the structure and chemical composition of size-selected micellar Pt nanoparticles (∼1 nm) supported on nanocrystalline γ-Al(2)O(3) during the catalytic oxidation of 2-propanol using X-ray absorption fine-structure ...

1 Department of Bioengineering, University of California San Diego, La Jolla, CA, USA and 2 Institute for Nonlinear Science, University of California San Diego, La Jolla, CA, USA 3 These authors contributed equally to this work 4 Present address: Institute for Systems Biology, Seattle, WA 98103, USA * Corresponding author. Department of Bioengineering, University of California San Diego, 9500 G...

Glassy thin films of water, methanol, ethanol, and 1-propanol were prepared by deposition from the gas phase at 20 K. Relaxation of their surface and bulk structures was investigated by measuring temperature evolutions of H(+), H(-), and total yields in low-energy H(2)(+) scattering. The surface structure of a methanol film changes at temperatures of about 20 K below the glass transition temper...

In the asymmetric unit of the title compound, [Cu(C(19)H(20)N(2)O(4))(H(2)O)], there are two independent mononuclear Cu(II) complexes. The coordination environment of each Cu(II) ion is square-pyramidal completed by two N atoms and two O atoms forming the basal plane, and one O atom of the water mol-ecule occupying the apical position. Neighbouring complexes are connected via O-H⋯O hydrogen bon...

Experiments on the absorption of cumene and the excretion of dimethylphenylcarbinol were made on 10 healthy volunteers, five men and five women aged between 20 and 35 years. They were exposed to cumene vapours 240, 480, 720 mg/m3 under controlled conditions. It was found that the average retention of cumene vapours was about 50% which tended to diminish at the end of each exposure. Based on the...

The rate constants and activation parameters are reported for the oxidation of methanol, ethanol, propanol, and isopropanol by 2,2’-bipyridyl chromium peroxide (BPCP) over the temperature range of 35° to 50°C.

In the title compound, C(15)H(15)NO, the dihedral angle between the benzene rings is 2.25 (2)°. The C-C-C-O atoms of the propanol side chain are in a gauche conformation [torsion angle = -60.5 (2)°]. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into C(2) chains propagating in [100]. The O-bonded H atom is disordered over two sites of equal occupancy.