Tangential flow-induced interface erosion poses a major threat to wide variety of engineering structures, such as earth-filled embankment dams, and oil- gas-producing wells. This study explores the applicability microbial induced calcium carbonate (CaCO 3 ) precipitation (MICP) by way ureolytic soil bacterium Sporosarcina pasteurii method for enhancing surface resistance fine sand. Specimens we...

during 2003-2004, a number of rhizospheric soil samples were collected of either healthy or symptomatic field grown melon plants infected with fusarium oxysporum f. sp. melonis race1/2 (fom). twenty one bacterial strains capable of inhibiting fom including burkholderia sp., bacillus sp., streptomyces sp. and pseudomonas fluorescens were isolated. the strains colonized roots of “long melon” cult...

corneal ulcer is a major cause of blindness throughout the world. when the cornea is injured by foreign particles, there are chances of infection by the organism and development of ulcer. bacterial infection in the cornea is invariably an alteration of the defense mechanism of the outer eye. it is essential to determine the local etiology within a given region when planning a corneal ulcer mana...

endophytes are important resources of bioactive compounds and due to their potential in theproduction of secondary metabolites, they are regarded as a potential reservoir ofbiotechnological applications. in this study, the bioactivity of bacteria and yeasts endophytesresiding in thymus sp. was evaluated. during april to october 2011, symptomless and healthytissues of thymus sp. were collected. ...

this study deals with bioleaching of the low grade uranium ore of saghand mine in iran using a mixed culture of mesophilic bacteria (acidithiobacillus ferrooxidans, acidithiobacillus thiooxidans and leptospirillum ferrooxidans). experiments were carried out in shaking flask examining the effect of temperature, initial ferrous ion concentration, pulp density and particle size. variations of ph, ...

background :    due to excessive consumption of synthetic drugs, drug resistance rate of pathogenic bacteria is increasing and there is an ever-increasing need to find new safe compounds to tackle this problem. this study was conducted to investigate the consequences of chavill extract on the growth and viability of gastrointestinal pathogenic bacterium and probiotics bacteria.   methods :    t...

the present study investigated the isolation and identification of biosurfactant producing bacteria from iranian oil wells. the biosurfactant production of bacteria isolates was evaluated and confirmed using hemolysis and emulsification tests. the biodegradation of crude oil was studied using gc and hplc analysis. a total of 45 strains have been isolated. these strains showed less than a 40 mn ...

the genus teucrium (germander) belongs to the family lamiaceae, within the subfamily ajugoideae .teucrium polium l. (labiatae) has long been recognized in folk medicine in the treatment of many pathophysiological implications, such as gastrointestinal disorders, inflammations, diabetes and rheumatism. in this study antimicrobial activity of two crude extracts obtained from teucrium polium l. wa...