Numerous applications of silver nanoparticles (AgNPs), as well the toxic effects these particles on soil organisms and microorganisms, raise question how reasonable entry into environment is. Studying behavior with also their effect microorganisms may be first step to finding out answer. Structural form differences in for use different conditions can change behavior. The surface is covered dive...

Stormwater runoff samples were collected from outfalls draining small municipal separate storm sewer systems. The samples were collected from three different land use areas based on local designation (high-density residential, low-density residential and landscaped commercial). The concentrations of microorganisms in the stormwater runoff were found to be similar in magnitude to, but less varia...

The response of microorganisms to an accidental spillage of 55,000 gallons of leaded gasoline into an Arctic freshwater lake was studied. Shifts in microbial populations were detected after the spillage, reflecting the migration pattern of the gasoline, enrichment for hydrocarbon utilizers, and selection for leaded-gasoline-tolerant microorganisms. Ratios of gasoline-tolerant/utilizing heterotr...

Several genotypic and phenotypic microbial source tracking (MST) methods have been proposed and utilized to differentiate groups of microorganisms, usually indicator organisms, for the purpose of tracking sources of fecal pollution. Targeting of host-specific microorganisms is one of the approaches currently being tested. These methods are useful as they circumvent the need to isolate individua...

Background: Some microorganisms can adhere to food handling surfaces forming biofilms that pose a safety challenge. This study was done to evaluate bacterial biofilm formation in milking equipments in Lilongwe, Malawi. Methods: Pooled milk (n=54) and water (n=60) samples were collected from households and milk bulking groups in Lilongwe, Malawi. Swabbing (n=46) and rinsing (n=16) were done on ...

The growing biomass in the wastewater treatment plant is called "activated sludge"; usually it mainly composed by bacteria (95%) and Protozoa Metazoans (5%). sludge biological composition a good indicator of state health. In this study, an initial characterization microorganisms present activated carried out through DNA analysis.The aim activity development procedures for oxidation lines, to id...

Microorganisms play an important role in shaping soil fertility, maintaining its performance as a bio-inert matter, and are indicator of qualitative changes the soil. As result anthropogenic impact on soil, number species composition microbiota is decreasing. The purpose study was to assess different physiological groups microorganisms meadow chernozem carbonate under pea fertilisation systems....