منابع مشابه
Sporulation in Distilled Water
Spores are formed when vegetative cells of sporing aerobes are shaken with distilled water at 37 degrees . These spores are derived from the small number of cells which survive lysis. The sporulation process involves increase and concentration of solid material in the cell, and is achieved at the expense of the products of lysis of 80 to 90 per cent of the resuspended cells.
متن کاملInactivation of Vibrio parahaemolyticus in distilled water.
Vibrio parahaemolyticus cells are readily inactivated in distilled water. The time of exposure required to inactivate 90% of the cells was between 0.9 and 4.4 min.
متن کاملThe Action of Radium Emanation on the Vitamines of Yeast
Becquerell has observed that p-rays change yellow phosphorus into red form. Ramsey* and Cameron* have shown that the radium emanation has destruotive and partial synthetic actions upon water, carbon monoxide, carbon dioxide, hydrogen chloride, and ammonia. The decomposing action of radium rays on the lecithin molecule has been observed by Schwara,4 Schaper,& and Werner.6 On the other hand, no s...
متن کاملScrew-shaped Contaminant of Distilled Water.
FIG. 9. Direct contact photography of Armillaria mellea hyphae by its own light. Kodak Microfile, 3-hr exposure. Negative photomicrographed; figutre constitutes a negative print. Arrows indicate clamp connections. X 1,200. FIG. 10. Direct contact photography of Armillaria mellea by its own light. Polaroid Type 55 P/N filn, 30-min exposure. Negative photomicrographed on Microfile film, figuire c...
متن کاملLifetime risk assessment of Radium-226 in drinking water samples
Background: One of the most significant radionuclides in natural drinking waters is 226Ra and its decay products. It is potential of health problems, including cancer risk. In this study, the effect of 226Ra concentration in 28 drinking water samples collected from the North Guilan province was investigated. Materials and Methods: The activity concentrations of 226Ra were measured by using of r...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1909
ISSN: 0036-8733
DOI: 10.1038/scientificamerican01021909-10supp