Surface and bulk properties of two anionic amphiphilic penicillins in a selective solvent

Article Abstract:

The surface tension and dynamic light scattering (DLS) are used to investigate the surface and bulk properties of two amphiphilic penicillins cloxacillin and dicloxacillin in aqueous solution and in the presence of ethanol. The stability curves for both penicillins have indicated the predominance of electrostatic repulsion, leading to a stable system over the drug-ethanol concentration range, but the height of the reduced pair interaction potential energy barrier has deceased with ethanol concentration.

Pharmaceutical Preparation Manufacturing, Pharmaceutical preparations, Industrial organic chemicals, not elsewhere classified, Ethanol, Ethyl Alcohol Manufacturing, Penicillin Preparations, Alcohol, Gibbs' free energy, Penicillin, Penicillins, Alcohol, Denatured

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84% catalyst activity of water-assisted growth of single walled carbon nanotube forest characterization by a statistical and macroscopic approach

Article Abstract:

A statistical and macroscopic analysis to estimate the catalyst activity of water-assisted growth of single-walled nanotubes (SWNT) and to characterize SWNT forests is proposed. The catalyst activity is estimated to be 84% (plusmn 6%), the highest ever reported.

Science & research, Research, Nanotechnology, Catalysis

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