objective: traditional methods for storing microbial dna samples use the low-temperatures of 4 °c, -20°c or -80 °c. the dbc card is a new method of storing microbial dna at room temperature. this study evaluates the stability and determine the best storing method of bacterial dna on the dbc card. methods: in this study, we used a pair of primers from the conserved domain of 16srrna designed to...

During the course of certain experiments designed to demonstrate ' antagonistic bacteria ' for intestinal pathogenic bacteria of man, the interesting observation was made, that manysamples of garden and field soil contain bacteriophages active against these organisms. A 1 in 100 suspension in saline of soil when added in 1 c.cm. amounts to melted agar containing a thick suspension of one of the...

Coherent structures appear in a concentrated suspension of swimming bacteria. While transport phenomena in a suspension have been studied extensively, how energy is transported from the individual cell scale to the larger mesoscale remains unclear. In this study, we carry out the first successful measurement of the three-dimensional velocity field in a dense suspension of bacteria. The results ...

The aim of this work was to evaluate the photokilling efficiency of synthesized titanium dioxide nanoparticles in suspension. Two strains of Escherichia coli, Lactobacillus casei rhamnosus and Staphylococcus aureus were used as probes to test the photokilling activities of the nanoparticles. The toxicity effects of TiO2 nanoparticles on the environment were determined by a standard test using g...

The applicability of microbubble suspension made of saponin as a biodegradation-enhancing carrier where oxygen and pollutant-degraders are limited was studied. The saponin-microbubble suspension was used to deliver phenanthrene-degrading bacteria, inorganic nutrients, and oxygen. Bench-scale study was carried out to determine the physical properties of the microbubble suspension and to verify w...

OCH3 CH3O To reduce the development of drug-resistant bacteria and maintain the effectiveness For testing Enterobacteriaceae: Acute E xacerbations of Chronic Bronchitis in Adults of sulfamethoxazole and trimethoprim oral suspension and other antibacterial drugs, sulfamethoxazole and trimethoprim oral suspension should be used only to treat or prevent infections that are proven or strongly suspe...

Oscillation in the bioluminescent intensity from a luminous bacteria suspension was observed. The time course of the luminescence intensity from a suspension containing luminous bacteria was measured. The oscillation mode changed with the liquid broth component. The optical density and dissolved oxygen (DO) concentration were measured simultaneously with the luminescence intensity, and a possib...

We measured the luminol- and lucigenin-enhanced chemiluminescent response of human polymorphonuclear leukocytes (PMN) stimulated by various strains of Streptococcus pneumoniae and Haemophilus influenzae. In the absence of opsonin, phagocytosis of either bacterial species elicited good PMN response when the bacteria were adhered to a surface but minimal PMN response when they were in suspension....

Regarding the influence of ultraviolet irradiation on the growth of bacteria, numerous studies have been accomplished and it has been known that there exists a relation of exponential function between the bactericidal effect and the amount of ultraviolet ray irradiated. The methods employed in those studies,1),2),3),4) a,b, however, are mostly so called plate method in which the irradiation is ...