This paper presents the results of a study on catalytic activity and selectivity nickel palladium catalysts in hydrogenation reactions nitro- acetylene compounds. It was shown that phenylacetylene depend nature modifying additives (Cu, Zn, Ti, Cr, Bi, Ti–Cu, Mn, Fe), based polymer metal complexes depends method their preparation. found for certain concentrations active phase (0.8 wt.%) potassiu...

At the 13 AIDS Conference in Durban new data from the following randomized clinical trials on the use of antiretrovirals (ARVs) to prevent mother to child transmission were presented: • PETRA Trial (South Africa, Tanzania and Uganda) • Perinatal HIV Prevention Trial (Thailand) • ANRS/CDC pooled analysis West Africa (Côte d’Ivoire and Burkina Faso) • SAINT Study (South Africa) • HIVNET012 trial ...

In 2015, there were an estimated 729 517 people living with HIV in Ethiopia, including 95 094 children (aged 0–14 years), according to the 2015 Estimation and Projection Package/Spectrum modelling. HIV prevalence at the national level is 4.2% among urban populations and 0.6% rural populations; by gender, HIV prevalence is 1.52% among women and 1.0% among men.1 The HIV epidemic in Ethiopia is pr...

Protein expression monitoring can be a good tool to determine disease onset and progression, and is also used in drug discovery and investigational science (1–4). However, commonly used assays lack the sensitivity and specificity required for the detection of low-abundance proteins (5,6). Several signal amplification technologies have been designed and applied to protein detection assays, inclu...

Proof. Proceed by contradiction. Suppose that f has more than one root in (0,∞). Let r1 and r2, with r1 < r2, be two consecutive such roots (note that we can always find two consecutive roots r1 and r2 because f (r) > 0 for any root r). From the hypothesis, we have f (r1) > 0 and f (r2) > 0. Since f ′ is continuous at r1, there exists an 0 < 2 < (r2− r1) such that f (x) > 0 in the interval (r1,...

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We have discovered nine presolar silicate grains from the carbonaceous chondrite Acfer 094. Their anomalous oxygen isotopic compositions indicate formation in the atmospheres of evolved stars. Two grains are identified as pyroxene, two as olivine, one as a glass with embedded metal and sulfides (GEMS), and one as an Al-rich silicate. One grain is enriched in 26Mg, which is attributed to the rad...

This paper deals with the automation of academic processes using workflow management systems. Current available workflows create lot of network traffic which leads to increase in network latency. The solution to this problem is to integrate mobile agents with workflow systems. Many researchers proposed and developed such systems but none of them consider the scenario of academic institution whi...

We revise and update SNO-STR-92-094 to identify and quantify sources of systematic uncertainty in determining the efficiency for detecting neutrons resulting from the neutralcurrent neutrino disintegration of deuterium. We conclude that aUowing for two standardized neutron sources (one strong, one weak) that can be moved vertically within the cylinder defined by projecting the vessel neck downw...