Experiments were conducted to investigate the effects of photo-oxidation on organic aerosol (OA) emissions from flaming and smoldering hardand soft-wood fires under plume-like conditions. This was done by exposing the dilute emissions from a small wood stove to UV light in a smog chamber and measuring the gasand particle-phase pollutant concentrations with a suite of instruments including a Pro...

In this study, the effect of surfactants (Tween-80 and Acetonitrile) inclusions in the culture medium of Bacillus subtilis on the yield and characteristics of extracellular protease was investigated. The results showed that addition of Tween-80 increased the enzyme yield by 5 folds and thermal stability from 50C to 60C. Tween-80 did not affect the optimum pH, KM and VMax values as well as the e...

Se realizó un experimento para determinar la producción de gas in vitro a 3, 6, 9, 12, 24, 36 y 48 h incubación, con dos inóculos colectados ovinos Saint Croix (T1: líquido ruminal, T2: excretas levadura), en cinco alimentos rumiantes diferentes proporciones concentrado (C) forraje (F), (100C:0F, 75C:25F, 50C:50F, 25C:75F 0C:100F), el fin evaluar factibilidad utilizar excretas, sustitución del ...

Z. Naturforsch. 50c, 345-352 (1995); received January 27/February 20, 1995 Liverworts, Frullania, Flavone Aglycones, Acylated Flavone Glycosides, Chemotaxonomy From Frullania teneriffae 5 known flavone aglycones and 6 flavone glycosides were iso­ lated, among them the new 6-OH-luteolin-6-0-ß-D-glucoside-7-0-ß-D-glueoside-6'"-(3-hydroxy-3-methylglutaroylester). F. cesatiana contains 2 flavone-di...

The present study was concerned with the selection of suitable surfactant for the production of alpha amylase by Bacillus subtilis GCBM-25 in 250 ml shake flask containing 50 ml of fermentation medium. Different surfactants (laundry soap, detergent powder, sulphonic acid, acyle benzene sulphonic acid, liquid soap, Tween 80, sodium silicate, bath soap, sodium tripolyphosphate, sodium lauryl ethe...

Despite its fundamental role in the dynamics of compressible fluids, bulk viscosity has received little experimental attention and there remains a paucity of measured data. Acoustic spectroscopy provides a robust and accurate approach to measuring this parameter. Working from the Navier-Stokes model of a compressible fluid one can show that the bulk viscosity makes a significant and measurable ...

With ever-increasing energy demand, more efforts are dedicated to designing innovative electrode materials providing higher storage capability and power output. As it has been demonstrated recently, the use of mixed cation–anion redox reactions opens up new possibilities for significant rise material's capacity unusual electrochemical characteristics lithium-ion battery electrodes. In this pape...

Various pulses are a good source of β-Amylase and this enzyme could find promising application of hydrolysis of starch. Hydrolysis of starch by β-amylases has couple of food and pharmaceutical applications. In the present work, β-Amylases from a variety of germinating pulses (Vigna radiata, Cicer arietinum (black), Vigna mungo, Glycine max, Cicer arietinum(white) were extracted and characterize...

New types of energy storage are needed in conjunction with the deployment of solar, wind and other volatile renewable energy sources and their integration with the electric grid. No existing energy storage technology can economically provide the power, cycle life and energy efficiency needed to respond to the costly short-term transients that arise from renewables and other aspects of grid oper...