Cavitation treatment of surface and natural waters is a method for their microbiological purification. The aim the present paper was to investigate possibilities disinfection by cavitation with Ge USM Cleaner device. A full factorial experiment type 22 performed. factors influencing water purification process were studied. Based on obtained experimental results, activation energy, thermal effec...

Using Molecular Dynamics, this paper investigates the thermophysical properties and oxygen transport of (Thx,Pu1-x)O2 (0 ≤ x ≤ 1) between 300-3500 K. In particular, the superionic transition is investigated and viewed via the thermal dependence of lattice parameter, linear thermal expansion coefficient, enthalpy and specific heat at constant pressure. Oxygen diffusivity and activation enthalpy ...

Ion association of the ionic liquid [bmim][Cl] in acetonitrile and in water was studied by dielectric spectroscopy for salt concentrations c r 1.3 M at 298.15 K and by measurement of molar electrical conductivities, L, of dilute solutions (c r 0.006 M) in the temperature range 273.15 t T/K r 313.15. Whilst acetonitrile solutions of [bmim][Cl] exhibit moderate ion pairing, with an association co...

The activation parameters for various iron structures were calculated by the analytical method based on paired four-parameter Mie-Lennard-Jones interatomic interaction potential. Within framework of a single method, all processes calculated: Gibbs energy, enthalpy, entropy and volume both process electroneutral vacancy formation atom self-diffusion. isobaric temperature dependences indicated BC...

Based on calculations of activation process parameters for gold, it is shown that if the energy required to create a defect (vacancy or diffusing atom) less than certain value (h i <h si ), resulting has volume (v < v then this negative entropy, i. e. orders crystal. The changes in functions h and with increasing pressure been studied. Keywords: vacancy, self-diffusion, enthalpy, ...

the objective of this study was to assess the adsorption potential of activated carbon (ac) asan adsorbent for the removal of murexide (mu) from aqueous solutions. the influence of variablesparameters including ph, amount of adsorbent, sieve size of adsorbent, temperature and contact timeon mu removal was studied. following optimization of variables, the relation between concentrations ofdye re...

A direct calorimetric measurement of the overall enthalpy change associated with self-assembly of organic monolayers at the liquid-solid interface is for most systems of interest practically impossible. In previous work we proposed an adapted Born-Haber cycle for an indirect assessment of the overall enthalpy change by using terephthalic acid monolayers at the nonanoic acid-graphite interface a...

A reversible effect of pH on the ionization of amino-acid residues at the active center of choline oxidase was observed near the optimum pH (8). Inactivation of choline oxidase took place in the pH ranges 3-6 and 9-11, in which irreversible changes in the structure occur leading to the enzyme inactivation. The first order rate constants of the enzyme's inactivation at various pH values were est...