optimization of the fermentation medium for maximum alkaline protease production was carried out. fifteen positive isolates were examined for their extent of alkaline protease production. the most potent producer was identified as bacillus sp. the solid substrate screening showed that the combination of wheat straw and bean husk was the best one. the initial screening by using plackett–burman’s...

Focusing waves inside a medium has applications in geophysics in areas such as imaging and microseismic event location. The goal in focusing is to concentrate the wave energy at a specific time and location inside a medium. Various techniques have been devised and used to achieve this goal. Timereversal (TR) is a well-researched method that has been used routinely to focus waves. The ability of...

Beta-carotene is a valuable carotenoid in high demand as a natural food coloring agent, provitamin A, additive to cosmetics, and health food. It can be accumulated up to more than 10% of cellular dry weight of Dunaliella salina under carotenogenic conditions such as high irradiance, high temperature, high salt concentration and nutrient deficiency. High beta-carotene productivity in Dunaliella ...

Objective(s):[p1]  This study highlights xylanase overproduction from Bacillus mojavensis via UV mutagenesis and optimization of the production process. Materials and Methods:Bacillus mojavenis PTCC 1723 underwent UV radiation. Mutants’ primary screening was based on the enhanced Hollow Zone Diameter/ Colony Diameter Ration (H/C ratios) of the colonies in comparison with the wild strain on Xyla...

microbial lipids have a great similarity to the lipids obtained from plants and animals. triacylglycerol is the storage lipid in most of eukaryotic cells; this characteristic attracts a lot of attention for using these lipid sources in biodiesel production. accumulation of neutral lipid composed of triacylglycerol and sterylster is an induced response to environmental stresses in many living or...

conclusions the results suggest that b. coagulans is a good candidate for the fermentative production of phb. background biodegradable polyesters are candidates for the development of environmental friendly plastics. poly-β-hydroxybutyrate (phb) is a type of polyester from the hydroxyalkanoates family, synthesized by bacteria as an intracellular material and accumulated as granules in the cytop...

We improve the fastest known algorithm for approximate string matching. This algorithm can only be used for low error levels. By using a new algorithm to verify potential matches and a new optimization technique for biased texts (such as English), the algorithm becomes the fastest one for medium error levels too. This includes most of the interesting cases in this area.

We are analyzing storage structures for two and three dimensional raster type data which are used for feature retrieval The features are one two or three dimensional objects with regular outlines like a rectangle or a prism The features could be parts of a map or image an area of special interest for searching after oil a sequence of ultra sound images and so on The storage medium is magnetic d...

It has been known for some time that Learning Classifier Systems (Holland, 1986) have potential for application as Data Mining tools. Parodi and Bonelli (1990) applied the Boole LCS (Wilson, 1985) to a Lymphography data set and reported 82% classification rates. More recent work, such as GA-Miner (Flockhart, 1995) has sought to extend the application of LCS to larger commercial data sets, intro...

The effects of media components, including carbon source, KH2PO4, and vitamin B1, on the production and quality of Agaricus brasiliensis S. Wasser et al. (=A. blazei Murrill ss. Heinem) exopolysaccharides (ABEP) were studied in submerged culture. The quality of ABEP was characterized on the basis of their stimulation of the release of tumor necrosis factor-alpha (TNF-a) by macrophage cell line ...