The possibility of obtaining of new polymeric salts on the basis of guanidinium and phosphonium polysulfones was investigated. Guanidinium and phosphonium polysulfones were synthesized by free radical copolymerization technique. Polysulfonylpyrrolidinium and polysulfonylpyrrolidinylphosphonium hydroxides were obtained by ion chromatography. Chemical modification of hydroxides results in new opt...

The inhibitory action of some herbicides on photosynthetic electron flow at photosystem II in isolated chloroplasts was investigated. Emphasis in the study is on compounds, whose chemical structure seemed to be in disaccordance with the basic structural element, proposed to be required for a photosystem II inhibitor. The effective inhibition of photosynthetic oxygen evolution by N-alkylated ure...

Iridium is very important element among the all transition metals with highest reported oxidation state i.e. +9 in gas phase existing species IrO4. Instead of its less reactivity, it forms number of compounds having oxidation states between -3 to +9. It is second known densest element after osmium. Till now its toxicity and environmental impact is not much more reported and thus it may be use a...

The purpose of the Enhanced Particulate Matter Surveillance Program was to provide scientifically founded information on the chemical and physical properties of dust collected during a period of approximately 1 year in Djibouti, Afghanistan (Bagram, Khowst), Qatar, United Arab Emirates, Iraq (Balad, Baghdad, Tallil, Tikrit, Taji, Al Asad), and Kuwait (northern, central, coastal, and southern re...

.......................................................................................................................................... 1 Acknowledgements ......................................................................................................................... 2 1.0. Introduction ....................................................................................................

Biological soft tissues and cells may be subjected to mechanical as well as chemical (osmotic) loading under their natural physiological environment or various experimental conditions. The interaction of mechanical and chemical effects may be very significant under some of these conditions, yet the highly nonlinear nature of the set of governing equations describing these mechanisms poses a cha...

Experiments on the production of elements 112-116 in Dubna, Russia, have proven the existence of the enhanced stability of their neutron-rich isotopes. Furthermore, the existence of element 118 has been demonstrated using the Ca beam and the Cf target [1]. The produced 118 isotope has half-life Tα=0.89 +1.07 -0.31 ms in agreement with the theoretical predictions and decays into 114 or 112, whic...