Residue antigen recognizable by the precipitin test can be prepared from yeast as from bacteria. The active material appears to be identical with a complex carbohydrate, the "yeast gum" of Salkowski. In the purest form of it obtained small amounts of both nitrogen and phosphorus are still present, either as impurities or as part of the molecule. The yeast gum is not antigenic in the sense of pr...

Keratohyalin granules were isolated in the native form from the epidermis of newborn rats by the use of citric acid and a detergent. The isolated granules revealed a fine granular substructure in the electron microscope similar to that seen in situ. Analyses of amino acids by automated column-chromatography showed that proline and cystine are present in large proportions whereas histidine is pr...

Introduction: Kaersutite is a Ti-rich amphibole defined as having between 0.50 and 0.80 Ti atoms per formula unit [1, 2]. It is commonly found in terrestrial mantle-derived peridotites, in alkalic rocks with obvious high-pressure histories [3, 4], and in some SNC meteorites for which the exact petrogenetic histories are unknown [5, 6]. Because kaersutite is found in rocks with high-pressure his...

T EXTBOOKS tell us that it was generally believed that genes were made of protein until the demonstration by AWRY, MACLEOD and MCCARTY (1944) that the material that caused bacterial transformation was DNA. Most textbooks fail to note that studies done several years earlier on mutations induced by ultraviolet (W) radiation also indicated that DNA had genetic activity. And it is often forgotten t...

1. It has been shown that the ash of liver, hemoglobin, and glutathione each exerts a very slight beneficial effect on the growth of sarcomatous fibroblasts of the rat, or on the condition of their cells when cultivated in a synthetic medium. 2. The addition of all three of these substances, or of only glutathione and hemoglobin, to a mixture of casein digest, glycocoll, and nucleic acid gives ...

The phosphorus (P) composition of sediment profiles in three subtropical lakes of contrasting trophic state in Florida, USA, was determined by sequential fractionation and solution P NMR spectroscopy. Sediment from Lake Annie, an oligo-mesotrophic sinkhole with moderately acidic sediment (pH 5.4; loss on ignition 58 %), contained higher total P concentrations than sediment from eutrophic Lake O...

A physico-chemical research of bis-(dipivaloylmethanato)barium(II) (Ba(thd)2) has been carricd out from the point of its use in CVD processes as a precursor (thermal stability, immunity to external effects and etc.). The optimal conditions for synthesis, purification and storage have been found. It has bee11 shown. that the sublimated product presents a mixture of several modifications with the...

The Development of Views regarding the Nature of Scientific Apparatus and Laboratory Methods: Chemical Forces: PROiFESSOR KASIMIR FAJANS ...... 99 A Manifold Desiccating Apparatus for DeterScientific Events: mining the Dry Weight of Small Samples of Historic Apparatus; British Air Route to the Wool: PROFESSOR JULIUS E. NORDBY. The PrepaArctic Regions; A Primary Standard of Light; ration of Perm...

A novel method is proposed to retrieve image sequences with the goal of forecasting complex and timevarying natural patterns. To that end, we introduce a framework called Memory-Based Forecasting; it provides forecast information based on the temporal development of past retrieved sequences. This paper targets the radar echo patterns in weather radar images, and aims to realize an image retriev...