Pseudomonas cepacia strains were isolated from the water reservoirs of unheated nebulizers in a hospital setting. The isolates were characterized by morphology, biochemical tests, and antibiotic susceptibility patterns. An interesting feature of these organisms was their capacity for sustained multiplication in either doubly deionized or doubly distilled water as well as 5% dextrose or 0.9% sal...

The dye reagent is buffered by M/10 phosphate salts at pH 7.4 and is prepared by dissolving 12.07 gm. anhydrous disodium hydrogen phosphate powder, 2.04 gm. potassium dihydrogen phosphate crystals, 2.60 gm. sodium arsenite powder, and 2.10 gm. sodium fluoride powder in 1 L. of distilled water. Sufficient 2,6-dichlorobenzenoneindophenol sodium is added to bring the absorbance of the solution to ...

Expansive soils can be found in many parts of the world particularly in arid and semi-arid regions. These soilspose a significant hazard to civil engineering structures due to its high swelling and shrinkage potential. This paperpresents the results of an experimental program developed to investigate the effect of cyclic drying and wetting on theswelling potential of expansive soils with variou...

distilled water it becomes cloudy owing to partial precipitation of the serum globulin. Under certain circumstances, a copious precipitate forms instead of a mere cloudiness. This precipitate is due to a globulin-like substance as is evident from the following facts:? (1) It is soluble in normal saline, in dilute acids, and in dilute soda bicarb, solution. It is also soluble in sodium hydrate s...

A study was conducted to evaluate the efficacy of electrolyzed acidic water, 200-ppm chlorine water, and sterile distilled water in killing Escherichia coli O157:H7, Salmonella, and Listeria monocytogenes on the surfaces of spot-inoculated tomatoes. Inoculated tomatoes were sprayed with electrolyzed acidic water, 200-ppm chlorine water, and sterile distilled water (control) and rubbed by hand f...

1 The effects of floral resources of several important non-crop host plants of Lygus lineolaris on the longevity of Anaphes iole , one of its natural enemies, was studied. 2 Median longevity of A. iole wasps provisioned with floral resources ( Erigeron annuus , Oenothera speciosa , Lamium amplexicaule , and Capsella bursapastoris ) was in the range 1.27 – 3.24 days, and did not differ from wasp...

1. Some features of the osmoregulatory mechanism are compared in four populations of Paranephrops zeal andicus White collected form freshwaters of different ionic concentrations. 2. Crayfish from freshwaters of ca, 2-0 mM-NaCl concentration show a sustained decrease in blood concentration of ca. 8% when placed in 0-2 mM-NaCl. 3. Populations from freshwaters of ca. 0-2-0-4 mM-NaCl show lower rat...

When distilled water from a tin-lined still served as the plating diluent, cells of Aerobacter aerogenes developed symptoms of metabolic injury as evidenced by increased counts on supplemented, as compared with minimal, plating medium. Cysteine was as effective as yeast extract as a supplement to the minimal medium in increasing the viable count. Mg(++) and, to a lesser extent, phosphate buffer...

Escherichia coli (EC) concentrations at two beaches impacted by river plume dynamics in southern Lake Michigan were analyzed using three-dimensional hydrodynamic and transport models. The relative importance of various physical and biological processes influencing the fate and transport of EC were examined via budget analysis and a first-order sensitivity analysis of model parameters. The along...