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A series of binary vehicles was used to deliver physostigmine across dermatomed human skin. The vehicles consisted of isopropyl myristate (IPM) and isopropyl alcohol (IPA) mixed in various volume fractions. The kinetics of penetration is conveniently considered as the sum total of two contributing effects: a "push" process resulting from the excess free(More)
Physostigmine salicylate was delivered from a series of solvents consisting of isopropyl myristate, isopropyl alcohol (IPA), and their mixtures across dermatomed human skin. The apparent steady-state fluxes over the time range of the test, obtained separately for physostigmine and its corresponding salicylate, indicate a consistent trend toward higher(More)
We perform a numerical-sensitivity study of various physical phenomena of interest for borehole resistivity logging applications in steel-cased wells. Specifically, we analyze the sensitivity of through-casing measurements for detecting water invasion, shale-laminated sands, and electrical anisotropy in the formation. In addition, we study the influence of(More)
The influence of the metal content (0-28 at.%) on the structural, mechanical and tribological properties of a-C:Cu films grown by pulsed filtered cathodic arc deposition is investigated. Silicon and AISI 301 stainless steel have been used as substrate materials. The microstructure, composition and bonding structure have been determined by scanning electron(More)
Partial molal volumes (Vi infinity) of physostigmine, ranging from 232.9 to 239.8 cm3.mol-1, and its mole fraction solubilities (Xi), ranging from 0.051 to 0.009, were determined at 25 degrees C in solutions of isopropanol (IPA), isopropyl myristate (IPM), and their mixtures. An inverse relation was found between Vi infinity and Xi. At solubility----0, Vi(More)
The UV and visible spectra of radical cations of several phenothiazine derivatives were studied using different solvents. The establishment of a relationship between these bands and the R2 and R10 substituents was attempted. The influence of the disolvents on the bands also was studied. The characteristic charge transfer band was observed in the solid state(More)
* Corresponding author. Tel: 34 1 3944348; Fax: 34 1 3944357 E-mail: anpardo@quim.ucm.es ABSTRACT X-ray photoelectron spectroscopy (XPS) was used in order to investigate the correlation between the surface chemistry and the atmospheric corrosion of AZ31, AZ80 and AZ91D magnesium alloys exposed to 98% relative humidity at 50oC. Commercially pure magnesium,(More)
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