نتایج جستجو برای: and microbial coefficient
تعداد نتایج: 16855458 فیلتر نتایج به سال:
The Monod model is a classical microbiological model much used in microbiology, for example to evaluate biodegradation processes. The model describes microbial growth kinetics in batch culture experiments using three parameters: the maximal specific growth rate, the saturation constant and the yield coefficient. However, identification of these parameter values from experimental data is a chall...
Background: Considering the toxic effects of heavy metals and microbial pathogens in industrial wastewaters, it is necessary to treat metal and microbial contaminated wastewater prior to disposal in the environment. The purpose of this study is to assess the removal of heavy metals pollution and microbial contamination from a mixture of municipal and industrial wastewater using membrane biorea...
Microbial fuel cell represents an emerging technology to attain electrical energy from wastewater. There are several alternative methods available for wastewater treatment; Microbial fuel cell is one of them, which generates green energy from wastewater for making a contribution to renewable sources of energy. This study states the performance of microbial fuel cell with different parameters i....
The addition of organic and inorganic substrates to calcareous soils low in organic matter and nitrogen contents may change soil microbial biomass and activity. In order to investigate the effect of chemical and organic fertilizers on soil CO2 production and microbial biomass C, a field experiment was conducted under maize cultivation. The experimental design was split-plot arranged in randomiz...
Background and purpose: Guilan province, with unique environmental values is located in southwest of the Caspian Sea. Disposal of untreated domestic, industrial and agricultural sewage to the surface of water pollutes the coastal waters of the Caspian Sea. Due to many pollutants in these swages they could endanger the health of swimmers. The purpose of this study was to evaluate the microbial c...
with aim for identification of contaminative and critical points of raw milk during production in 9 selected industrial dairy farms, 408 raw milk samples were collected from udders, milking machine, cooling tank and milk transport vehicle at receiving platform in dairy plant. samples were examined for total microbial, coliform ande. coli count and also acidity and ph. total microbial count of s...
OBJECTIVES The purpose of this study was to compare microbial profiles of saliva, pooled and site-specific subgingival samples in patients with periodontitis. We tested the hypotheses that saliva can be an alternative to pooled subgingival samples, when screening for presence of periopathogens. DESIGN Site specific subgingival plaque samples (n = 54), pooled subgingival plaque samples (n = 18...
Airborne fungi are often collected during the assessment of water-damaged buildings. Air sampling for endotoxin, a characteristic group of constituents of outer membranes of gram-negative bacteria, is another approach commonly used to characterize microbial conditions in buildings. This study presents results of fungal and endotoxin air samples collected in buildings with microbial complaints. ...
risk of microbial contamination in the cosmetic products and transmission to consumers especially in smuggled preparations is very high. according in this study, the microbial content and pollution some of the sunscreen creams in the market and one sample in official market as witness were evaluated. the microbial content (bacterial total count, fungal count, and presence of pseudomon asaerogin...
Approximately 75% of microbial infections found in humans are caused by microbial biofilms. These biofilms are resistant to host immune system and most of the currently available antibiotics. Small peptides are extensively studied for their role as anti-microbial peptides, however, only a limited studies have shown their potential as inhibitors of biofilm. Therefore, to develop a unique computa...
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