Bose-Einstein correlations in relativistic heavy ion collisions and their dependence on the freeze-out condition in hydrodynamic models is examined. The Cooper & Frye space-like freeze-out mechanism is compared to time-like freeze-out, where particles are emitted away only from the surface, i.e. spacevs. time-like freeze-out. The corresponding HBT radii are calculated for the two models emphasi...

The early stages in the evolution of the gluons produced in the central region of a head-on high-energy heavy ion collision are studied. An equation is given for the rate of change of transverse momentum into longitudinal momentum where the longitudinal direction is along the collision axis. We are able to follow the system up to the time where equilibration seems to be setting in, but we are u...

A novel idea for biochemical microanalysis of heavy metal ions in combination with flow-injection techniques is proposed. The microdetermination of the cofactors based on an apoenzyme reactivation method is reviewed exemplifying the assays for heavy metal ions with use of several kinds of immobilized metalloenzymes as the recognition elements for each metal ion.

We discuss the prospects for parity non-conservation experiments with highly charged heavy ions. Energy levels and parity mixing for heavy ions with two to five electrons are calculated. We investigate two-photontransitions and the possibility to observe interference effects between weakmatrix elements and Stark matrix elements for periodic electric field configurations.

Constraints on the EoS for symmetric matter (equal neutron and proton numbers) at suprasaturation densities have been extracted from energetic collisions of heavy ions. Collisions of neutron-deficient and neutron-rich heavy ions now provide initial constraints on the EoS of neutronrich matter at sub-saturation densities. Comparisons are made to other available constraints.

Since the discovery of large (factor of greater than 1000) enhancements of singly ionized helium in corotating interaction regions (CIRs), it has become clear that low charge state ions from interstellar neutrals or other heliospheric sources can be preferentially injected into the energetic particle population. The large enhancements in suprathermal and energetic He` suggest that low charge st...

The rate of changes of heavy metal ions concentrations in the organism or biological system will determine the choice of strategy of realization of heavy metal ions effect and, consequently, the biological effect itself. Which of the possible strategies will dominate, depend on the rate of changes of concentration of heavy metal ions in biological systems, functional activity of organism at the...

In this experiment, wheat plants were exposed to drought stress during seed development then we worked on the obtained seeds. The seed mitochondrial ultra-structure, and antioxidant enzymes in seedling were investigated after exposure to seed accelerated ageing. Drought stress during seed development induced some changes in mitochondrial ultra-structure. Encountering seed development to drought...

The biosorption of heavy metals can be an effective process for the removal of such metal ions from aqueous solutions. In this study, the adsorption properties of nonliving biomass of phanerochaete chrysosporium for Pb (II) and Zn (II) were investigated by the use of batch adsorption techniques. The effects of initial metal ion concentration, initial pH, biosorbent concentration, stirring speed...

Background: In light of severe and growing shortages of clean water and the rising environmental pollution in many countries, seawater desalination has been an effective method to produce freshwater. Cationic membranes have enabled environmental scientists to effectively remove toxic heavy metals from wastewater and to regenerate freshwater. Methods: We used a novel method, involving electro- ...