the catalyst pt-ta supported on 7-alumina was prepared by impregnation with solution containing compoundsof ii21k1.0. and ta205 the pt concentration was kept constant at 0.2 vet% while the concentration of thetantalum was 0,4 wt%. the activity and selectivity of catalyst were determined under conditions at 450-500 °cand 15-30 atm.. with molar ratio h2/c[h,e5 and wh=1.5ml/h for converted n-hepta...

System analysis of oxygen production by hydrogen reduction of lunar regolith has shown the importance of the relative time scales for regolith heating and chemical reaction to overall performance. These values determine the sizing and power requirements of the system and also impact the number and operational phasing of reaction chambers. In this paper, a Nusselt number correlation analysis is ...

two rapid, simple, sensitive and cost-effective titrimetric and spectr-ophotometric methods are described for the determination of albendazole (alb) in bulk drug and in pharmaceuticals. in titrimetry (method a), alb is oxidized by a known excess of potassium permanganate (kmno 4 ) in h 2 so 4 medium followed by the determination of unreacted permanganate by titration with ferrous ammonium sulph...

Fluorescence correlation spectroscopy (FCS) is a standard tool for studying diffusion of molecules in solution, but is limited to low analyte concentrations, in the range between 10 pM and 1 nM. Such concentration limitations can be overcome by using a plasmonic nanoantenna which confines the electric field of excitation light into a tiny volume near its surface and thereby reduces the effectiv...

BACKGROUND The authors studied the hemodynamic effect influent by using the novel high concentration of lidocaine HCl for surgical removal impacted lower third molar. The objective of this study was to evaluate the hemodynamic change when using different concentrations of lidocaine in impacted lower third molar surgery. METHODS Split mouth single blind study comprising 31 healthy patients wit...

The water solution of an intriguing luminescent 'Inorganic Co-crystal' of Cu(II) monomeric and dimeric units shows extremely selective sensing ability towards inorganic arsenic(III) in water medium in the pico-molar concentration range even in the presence of other cations.

Figure 3. Comparison of BSA crosslinking efficiency by SDS-PAGE. Different crosslinkers were incubated with BSA at molar excess of crosslinker to protein (e.g. 20, 100 or 500-fold). Crosslinking efficiency is shown by decreased mobility by SDS-PAGE and varied by crosslinker type, solubility and concentration. Figure 1. Structures of non-cleavable and MS-cleavable crosslinkers used for protein –...

We present the derivation of a CTMC with levels model of diffusion in cylindrical coordinates from the partial differential equation for Fick’s law. The resulting model abstracts both molar concentration, by discrete levels, and spatial location, by discrete compartments. We apply the results to the diffusion of nitric oxide in human vessels and illustrate with simulations in the PRISM tool.