Abstract In the present study, optimization of microbiologically induced calcium carbonate precipitation (MICP) to produce biosandstone regarding compressive strength is shown. For production, quartz sand was treated sequentially with ureolytic microorganism Sporosarcina pasteurii (ATCC 11859) and a reagent containing urea chloride. Response surface methodology (RSM) applied investigate influen...

background: urinary tract infection (uti) is considered as the most common bacterial infectious disease seen among the pediatric patients. the aim of this study was to investigate the prevalence and antimicrobial susceptibility of bacterial uropathogens isolated from the pediatric patients with urinary tract infections. methods: this descriptive study was conducted in children medial center, te...

abstract       background and objective: the spread of drug resistance in bacteria have prompted researchers to seek suitable alternative for antimicrobial drugs among various medicinal plants and nanoparticles. the aim of this study was to evaluate the effect of silver nanoparticles alone and in combination with methanol extract of zataria multiflora on five gram-positive and gram-negative bac...

acute infectious gastroenteritis is one of the most common infectious diseases of humans in the world. diarrhea is a significant cause of death in infants. it has been estimated that up to 15% of children in developing nations die of diarrhea before 3 years of age. this study has been carried out to investigate entheropathogenic bacteria from 558 specimens of children less than 5 years of age. ...

With the number of easily accessible ores depleting, alternate primary and secondary sources are required to meet increasing demand economically important metals. Whilst highly abundant, these materials lower grade with respect traditional ores, thus selective sustainable metal extraction technologies needed reduce processing costs. Here, we investigated leaching potential biogenic ammonia prod...

a new medium, termed ecol was developed for the detection and enumeration of e. coli. the selective properties of ecol medium for the detection of e.coli from mixed culture in wastewater was tested and compared with conventional coliform media at 37°c and 44°c. results clearly showed that ecol medium was enable to direct confirmation of e.coli to be carried out by the indole reaction. the resul...

background and aims:nosocomial infections cause considerable morbidity and mortality and pose high financial burden on healthcare systems. although surface contact, surgical incisions, wounds and catheters are responsible for a high percentage of nosocomial infections, bacterial and fungal air contaminations in hospitals have an important role in development of hospital infections. the purpose ...