k-essence cosmologies in Kantowski–Sachs and Bianchi space–times

We investigate Kantowski–Sachs, locally rotationally symmetric Bianchi-I and Bianchi-III cosmology with k-essence and found a set of models that dissipate the initial anisotropy. We obtain the conditions leading to a regular bounce of the average geometry. We show that the linear k-field and polynomial kinetic function models evolve asymptotically to Friedmann–Robertson–Walker cosmologies. For linear k-essence we find the general solution in these cosmologies, when the k-field is driven by an inverse scalar potential.

Advanced age, constipation, depression: what are the ways of management?

Constipation is one of the key problems of modern therapy for elderly people. The research aim was to study the features of the psychological and microbiological status of the advanced and senile age patients with functional constipation and to see the effect of educational programmes on compliance of the patients with the therapy in the out!patient departments. The investigation showed that depression was more frequent in the patients of group 1 (68.4 % of the cases) with compensated function of the large gut whereas in the 2nd group – 34.6 % (compensated) and in the 3rd group – 41.5 % (subcompensated)cases. The 3rd degree dysbiosis was found in all patoents irrespective of the extern of disorder of the motor!kinetic function in the large gut.

Non-Isothermal Kinetics Studies on the Thermal Decomposition of Boron Doped g-C3N4 by TG Method

Melamine and boron trioxide (B2O3) were directly pyrolyzed in semi-closed system to prepare Boron doped g-C3N4. The analytic results of XRD, XPS and FTIR proved that g-C3N4is doped by boron successfully. The thermal decomposition of B doped g-C3N4has been studied using TGA-DTG technique. The iterative procedure method was employed to calculate the activation energy Eα, and the most reasonable kinetic function of the decomposition of B doped g-C3N4was confirmed by the integral method with 36 types of kinetic function .