منابع مشابه
Nanoscale Morphology of Water in Silica Colloidal Crystals.
We show a simple method to visualize the morphology of water adsorbed within the pore network of colloidal crystals made of submicrometer silica spheres. Water is replicated into silica by modified silicon tetrachloride hydrolysation under standard ambient conditions, making it visible to standard electronic microscopy and thus allowing one to discern the original water distribution. Different ...
متن کاملGamma Radiation Measurement due to Natural Radioactivity in Hot Water Spring of Behbahan
Introduction: Many people use hot water springs to treat some diseases, such as rheumatism, arthritis, and skin diseases, but they are unaware of the presence of natural radioactive substances that may be found in hot water springs. An effective way to understand the radiation risk of these elements are measuring the dose rate of radiation. In this study, for the first time, ga...
متن کاملSystematic bacteriological study of Manghopir hot spring water.
The thermophilic islolates of Mangho-pir spring water were of bacillary forms. All were gram positive, sporing rods, varying in sugar reactions; one being non saccharolytic, two monosaccharolytic, one disaccharolytic and nine fermented four or more sugars. All belonged to genus Bacillus of family Bacillaceae. All were found to be thermophilic varieties of ter-ristrial mesophilic species of genu...
متن کاملSilica deposits on Mars with features resembling hot spring biosignatures at El Tatio in Chile
The Mars rover Spirit encountered outcrops and regolith composed of opaline silica (amorphous SiO2·nH2O) in an ancient volcanic hydrothermal setting in Gusev crater. An origin via either fumarole-related acid-sulfate leaching or precipitation from hot spring fluids was suggested previously. However, the potential significance of the characteristic nodular and mm-scale digitate opaline silica st...
متن کاملExperimental simulation of evaporation-driven silica sinter formation and microbial silicification in hot spring systems.
Evaporation of silica-rich geothermal waters is one of the main abiotic drivers of the formation of silica sinters around hot springs. An important role in sinter structural development is also played by the indigenous microbial communities, which are fossilized and eventually encased in the silica matrix. The combination of these two factors results in a wide variety of sinter structures and f...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1970
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.91.12_1141