petroleum hydrocarbons are important energy resources used by industry and in our daily life, whose production contributes highly to environmental pollution. to control such risk, bioremediation constitutes an environmentally friendly alternative technology that has been established and applied. it constitutes the primary mechanism for the elimination of hydrocarbons from contaminated sites by ...

alkaline phosphatase (ortho phosphate, monoester hydrolase phosphoinositide e. c. 3.1.3.1) is a non-specific metalloproteinase enzyme that is located inside periplasmic space of bacteria. this enzyme is used to measure freshwater sediment in genetic engineering for cleaning water. isolation and molecular identification of the bacteria producing alkaline phosphatase and comparison of its product...

various physico chemical characteristics of the river ganga in varanasi were studied in the oct 2005 to nov 2006. ecological parameters like dissolved oxygen(do), ph, nitrate(no3-), po43- and bacterial population were analyzed and compared with standard permissible limits to assess the best designated use of the river water for various purposes. study revealed that the water quality at varanasi...

background :   imipenem-resistant gram negative bacteria, resulting from metallo-beta-lactamase (mbls)-producing strains have been reported to be among the important causes of nosocomial infections and of serious therapeutic problem worldwide. because of their broad range, potent carbapenemase activity and resistance to inhibitors, these enzymes can confer resistance to almost all beta-lactams....

use of microorganisms for removing mercury is an effective technology for the treatment of industrial wastewaters and can become an effective tool for the remediation of man-impacted coastal ecosystems with this metal. in this study, seven types of mercury resistant bacteria were separated from industrial waste and minimum inhibitory concentration (mic), were determined for these bacteria. resu...

background: bio-aerosols in the air of hospital wards have an important role in the development of infections. it is important to make quantitative and qualitative estimations of microorganisms in the air of these wards as an index for environmental hygiene applicable to different hospital wards. the aim of the study was to investigate degrees of diversity and density of bio-aerosols in the edu...

abstract khuzestan province accommodates the largest oil-fields with huge petroleum production in iran. oil spills through transportations, oil pumping station and storage tanks are the cause of frequent contamination in land areas, including crop fields, imposing great damages to soil ecology. thus, oil removal from contaminated soil by advance technologies such as bioremediation seems to be o...

conclusion according to our findings, it is recommended to use ferula gummosa extract, as a herbal alternative treatment, in more investigations to prove its treatment effects on infections. objective ferula gummosa grows as a native plant in different parts of iran and has been used for treatment of some infections such as uti since ancient times. present study is planned to show the antibacte...

a wide range of medicinal plant parts that possess varied medicinal properties are used for extracts as raw drugs. in this study, the ethanolic extract obtained from aerial parts of fennel (foeniculum vulgare mill.) seedlings was evaluated in vitro to examine their antimicrobial activity against four gram-negative and three gram-positive bacteria and two fungi. aerial parts of one-month-old see...

conclusions the results of the present study suggest that the presence of fusobacterium species in periodontal pockets is an important risk factor for halitosis. results in total, 26% (n = 13) and 8% (n = 4) samples were positive for fusobacterium species in the halitosis and control groups, respectively, with f. nucleatum present in the greatest proportion in both groups. halitophobia was sign...