During the absorption of phosphate by yeast, the cells acquire the capacity to absorb Mn ++ and Mg ++, a capacity which is retained even after phosphate is no longer present in the medium. Cells pretrcated with phosphate and then washed, slowly lose their ability to absorb Mn ++, the rate of loss depending on the temperature and on the metabolic state. The fermentation of sugars induces a very ...

Afforestation, the conversion of non-forested lands to forest plantations, can sequester atmospheric carbon dioxide, but the rapid growth and harvesting of biomass may deplete nutrients and degrade soils if managed improperly. The goal of this study is to evaluate how afforestation affects mineral soil quality, including pH, sodium, exchangeable cations, organic carbon, and nitrogen, and to exa...

The syntheses and crystal structures of the fluorinated linker 1,4-bis(3,5-bis(trifluoromethyl)-1H-pyrazole-4-yl)benzene (H2-tfpb; 1) and the novel metal-organic framework family M[CFA-4] (Coordination Framework Augsburg University-4), M[Cu5(tfpb)3] (M = Cu(i), K, Cs, Ca(0.5)), are described. The ligand 1 is fully characterized by single crystal X-ray diffraction, photoluminescence-, NMR-, IR s...

Abstract It was found that at the time of completion soil compaction it has content moisture ∼ 4-8% and, therefore, osmosis coefficient in initial period road use is minimal. The mutually eliminated by antiosmosis, which determines duration osmotic period. established magnitude influenced factors also affect parameters electric double layer: compaction, mineral composition, type exchangeable ca...

A b s t r a c t S u r f a c e area determinations were made on a montmorillonite with various cations emplaced on the exchangeable sites, utilizing nitrogen and carbon dioxide as adsorbates at 77~ and 195~ respectively, in a dynamic system. From the fraction of a Mississippi montmorillonite less than about 1/x in size, samples were prepared by replacing the original exchangeable cations with Li...

We report the advances in the principal structural and experimental factors that might influence the carbon dioxide (CO2) adsorption on natural and synthetic zeolites. The CO2 adsorption is principally govern by the inclusion of exchangeable cations (countercations) within the cavities of zeolites, which induce basicity and an electric field, two key parameters for CO2 adsorption. More specific...