the sources of groundwater pollution such as, industrial effluents, sewage and extensive farming have lead to agrochemical pollution. mathematical modeling helps to analyze the existing situation, allows forecasting, and to evaluate the effects of changes in the surrounding water quality. the present research has been focused mainly towards understanding the various processes affecting the tran...

The assessment of multicomponent adsorption pentavalent metalloids is important since they are often found together in groundwaters and mining runoff. For this purpose, As(V), Sb(V) P(V) onto iron-coated cork granulates was studied binary ternary systems. Data from equilibrium kinetic studies revealed that uptake these contaminants a multilayer, heterogeneous process well described by Freundlic...

Newly laid eggs of many insect species store maternal ecdysteroids as physiologically inactive phosphoric esters. In the silkworm Bombyx mori, we previously reported the presence of a specific enzyme, called ecdysteroid-phosphate phosphatase (EPPase), which catalyzes the dephosphorylation of ecdysteroid-phosphates to increase the amount of free ecdysteroids during early embryonic development. I...

Long-chain polyprenols and polyprenyl-phosphates are ubiquitous and essential components of cellular membranes throughout all domains of life. Polyprenyl-phosphates, which include undecaprenyl-phosphate in bacteria and the dolichyl-phosphates in archaea and eukaryotes, serve as specific membrane-bound carriers in glycan biosynthetic pathways responsible for the production of cellular structures...

Phosphates in natural waters and whatever their origin, promote the formation of algae, reduce dissolved oxygen biodiversity aquatic ecosystems. At high doses, phosphate salts can cause health problems. The objective our study was to develop a simple, efficient environmentally friendly sorption depollution technique on available inexpensive media. We have studied adsorption activated carbons pr...

DNA-templated organic synthesis (DTS) enables new modes of controlling chemical reactivity and allows evolutionary principles to be applied to the discovery of synthetic small molecules, synthetic polymers, and new chemical reactions. The structures that can be accessed in a DNA-templated format thus far have been limited to those that can be generated in aqueous solvents. Here we report effici...