Intratumoral injection of ultrasonically prepared emulsions of the synthetic glycolipid methly 6-O-(2-tetradecyl-3-hydroxyoctadecanoyl)-alpha-D-glucopyranoside (designated C39) induced complete regression of transplants of a syngeneic murine fibrosarcoma in most of the treated animals as did 6,6'-di-O(2-tetradecyl-3-hydroxyoctadecanoyl)-alpha,alpha,-trehalose (designated C76) in a previous stud...

The effects of 14 herbicides on cellulose decomposition by Sporocytophaga myxococcoides were studied by growing the organism in two different liquid cellulose-mineral salts media in the presence of the test agent and then quantitatively determining the residual cellulose. In the first medium, containing acid-hydrolyzed cellulose, anthrone reagent was used to determine residual carbohydrate. In ...

Determining oil migration distances from source rocks to reservoirs can greatly help in the search for new petroleum accumulations. Concentrations and ratios of polar organic compounds are known to change due to preferential sorption of these compounds in migrating oils onto immobile mineral surfaces. However, these compounds cannot be directly used as proxies for oil migration distances becaus...

In the process of smelting copper mineral a large amount of sulphuric dioxide (SO2) is produced. This compound would be highly pollutant if it was emitted to the atmosphere. By means of an acid plant it is possible to transform it into sulphuric acid, using for this a set of chemical and physical processes. In this way we dispose of a marketable product and, at the same time, the environment is...

Single crystals of the title compound, tris-odium hexa-chloridodysprosate, Na(3)DyCl(6), were obtained as a by-product of synthesis using dysprosium(III) chloride and sodium chloride among others. The monoclinic structure with its typical β angle close to 90° [90.823 (4)°] is isotypic with the mineral cryolite (Na(3)AlF(6)) and the high-temperature structure of the Na(3)MCl(6) series, with M = ...

Ti-isotope fractionation on the most Ti-rich minerals Earth has not been reported. Therefore, we present a chemical preparation and separation technique for mineralogic, petrologic, economic geologic studies. A two-stage ion-exchange column procedure modified from previous literature is used in current study to separate Ti Fe-rich samples, while ?-TiO2 does require separation. Purified solution...

To improve the magnesia removal effect of collophane and increase P2O5 grade phosphorus concentrate, fatty acid collector mixed with sodium dodecyl sulfate (SDS) was used as compound in reverse flotation for system. Solution surface tension measurement, Zeta potential test infrared spectrum analysis were conducted to analyze intensified dolomite removal. The results showed that under conditions...

Previous laboratory and pilot clinical trial data suggest that vitamin and/or mineral supplementation may prevent tumor growth in small cell lung cancer. However, rates of supplementation and their major purported clinical effects have never before been studied in patients with small cell lung cancer. This study was undertaken to explore associations between vitamin/mineral supplementation and ...