Bacterial Inactivation
Mostrando 37-48 de 435 artigos, teses e dissertações.
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37. Response of bacteria in wastewater sludge to moisture loss by evaporation and effect of moisture content on bacterial inactivation by ionizing radiation.
Two studies were carried out to determine the influence of moisture content of the survival of bacteria in raw wastewater sludge. The first study involved the effect of water loss by evaporation on the bacterial population. The second used these dewatered samples to measure the effects of moisture content on the inactivation of bacteria sludge by ionizing ra
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38. FURTHER STUDIES ON THE IONIZING RADIATION INACTIVATION OF BACTERIAL SPORES
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39. Bacterial inactivation by using near- and supercritical carbon dioxide
The three most common methods of sterilization in use today are ethylene oxide exposure, γ-irradiation, and steam sterilization. Each of these methods has serious limitations for the sterilization of some materials used in medicine, especially thermally and hydrolytically sensitive polymers by themselves and in combination with proteins. In this work, we de
The National Academy of Sciences.
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40. A PROBIT METHOD TO INTERPRET THERMAL INACTIVATION OF BACTERIAL SPORES1
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41. Inactivation of poliovirus type 1 in mixed human and swine wastes and by bacteria from swine manure.
The persistence of poliovirus type 1 (PO1) in mixed septic tank effluent and swine manure slurry was determined, and the antiviral effects of several bacterial cultures isolated from swine manure slurry were demonstrated. In two field experiments, PO1 was consistently inactivated more rapidly in the mixed waste than in the control Dulbecco's phosphate-buffer
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42. Chlorine Inactivation of Sphingomonas Cells Attached to Goethite Particles in Drinking Water
Bacteria in drinking water, attached or not attached to goethite particles, were disinfected with chlorine. No additional protection was provided to the bacteria by their attachment to particles, and the limited efficiency of inactivation by chlorine was attributed to the presence of bacterial aggregates in both types of suspension.
American Society for Microbiology.
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43. Examination of Peak Power Dependence in the UV Inactivation of Bacterial Spores
We examine whether the rate of delivery of photons from a UV radiation source has an effect on the inactivation of spores. We directly compare the output of a high-peak-power UV laser source at 248 nm to a low-power continuous lamp source (254 nm) in the inactivation of Bacillus subtilis spores. The two UV sources differ by a factor of 108 in peak power. Con
American Society for Microbiology.
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44. Chlorine Dioxide Inactivation of Cryptosporidium parvum Oocysts and Bacterial Spore Indicators
Cryptosporidium parvum, which is resistant to chlorine concentrations typically used in water treatment, is recognized as a significant waterborne pathogen. Recent studies have demonstrated that chlorine dioxide is a more efficient disinfectant than free chlorine against Cryptosporidium oocysts. It is not known, however, if oocysts from different suppliers a
American Society for Microbiology.
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45. Inhibition of endotoxin-induced bacterial translocation in mice.
The primary functions of the gut are to absorb nutrients and exclude bacteria and their products. However, under certain circumstances the gut may lose its barrier function and serve as a reservoir for systemic microbial infections. These experiments were performed to determine the mechanisms whereby endotoxin causes bacteria to escape (translocate) from the
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46. Thermoradiation Inactivation of Naturally Occurring Bacterial Spores in Soil
Samples of soil collected from the Kennedy Space Center near the spacecraft assembly facilities were found to contain microorganisms very resistant to conventional sterilzation techniques. The inactivation kinetics of the naturally occurring spores in soil were investigated by using dry heat and ionizing radiation, first separately and then simultaneously. D
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47. Chlorine Inactivation of Bacterial Bioterrorism Agents
Seven species of bacterial select agents were tested for susceptibility to free available chlorine (FAC). Under test conditions, the FAC routinely maintained in potable water would be sufficient to reduce six species by 2 orders of magnitude within 10 min. Water contaminated with spores of Bacillus anthracis spores would require further treatment.
American Society for Microbiology.
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48. Early events and mechanisms in the induction of bacterial SOS functions: analysis of the phage repressor inactivation process in vivo.
Different inducing agents and treatments produced distinctly different kinetic patterns of inactivation of prophage repressor molecules. The different patterns were related to differences in the initial altered states of DNA that were produced. The timing of appearance of DNA degradation was correlated with the time needed for repressor inactivation. These c