PHOSPHATE UTILIZATION BY DIATOMS

Utilization of High-Energy Phosphate Compounds by Stomach

The frog gastric mucosa in vitro secretes HC1 and maintains its electrical activity for many hours. Both processes depend on the active transport of C1 ion and are inhibited under appropriate conditions by SCN ion. I t has been suggested that a membranebound ATPase from gastric mucosa is involved, since this ATPase is also inhibited by SCN (8). I t furthermore is stimulated by physiological con...

Glutamine utilization by rat neutrophils: presence of phosphate-dependent glutaminase.

The capacity of rat neutrophils to utilize glutamine was investigated by 1) determination of oxygen consumption in the presence of glucose or glutamine, 2) measurement of maximal activity of phosphate-dependent glutaminase, 3) Northern blot, Western blot, and immunocytochemical detection of glutaminase, and 4) measurement of glutamine utilization and also production of ammonia, glutamate, aspar...

Epipsammic diatoms of diatoms of Kelkit Creek (Tokat/Turkey)

In this study, diatoms in epipsammic samples, which were taken from two stations selected in Kelkit Creek (Tokat/Turkey) between March and December 2018, were analyzed. During the study, a total of 25 taxa belonging to diatoms were recorded. The diatom species represented by the highest number of taxa were Cymbela (4 taxa), Nitzschia (4 taxa), and Navicula (3 taxa). Sorensen similarity index be...

Enhancement of Phosphate Flotation by Ultrasonic Pretreatment

Removal of carbonate impurities in sedimentary phosphate is one of the most important issues in the industry. Poor selective flotation of those ores is due to the similarity of Physico-chemical surface properties, solubility and electrokinetic characteristics of sparingly soluble phosphate and carbonate minerals. In this study, the effect of ultrasonic irradiation as a pretreatment method o...

[Diatoms in the diagnosis of drowning. I. Biology of diatoms].