Dielectric Response and a Phenomenon of a Narrow Band Absorption for a Classical Rotor in a Double Well Potential

The theory of dielectric relaxation in a planar ensemble of polar molecules is presented for a model where dipoles rotate in an intermolecular conservative double well potential, having a profile U = U_0*sin^2(θ). The evolution of the wide band dielectric spectra is demonstrated when the potential depth U_0 is varied; an isotropic and anisotropic medium being taken as examples. The spectra comprise the Debye relaxation and the quasi-resonant Poley absorption region. The rigorous theory is compared with a simplified one which was called the hybrid quasi-elastic bond / extended diffusion model. This approximation is valid for a qualitative description and also for the quantitative one at the large field parameter p = (U_0/((k_B)T))^(1/2). For P >> 1 the spectrum comprises one narrow absorption band and one Debye relaxation region considerably shifted to low frequencies. It is show that in the long lifetime limit τ there exists a minimum absorption band Δν_0(p). The quantity Δν_0 becomes small if the parameter p >> 1.The dielectric relaxation in ice 1 is discussed with regards to this phenomenon

HYDROLYTIC STABILITY OF IMIDES OF DIFFERENT STRUCTURES

The conversion kinetics of N(o-carboxyphenyl)naphthalimide has been studied in buffer solutions over a pH range 5-12.6 and temperature range 25-70 °C. The naphthalimide hydrolysis is shown to be a reversible reaction. The mechanism of the alkaline hydrolysis of N(o- carboxyphenyl) phthalimide is proposed. The structure dependence of the imide hydrolytic stability is explained on the basis of the suggested mechanism

Some reproduction behaviour features of families with cancer children

Purpose: The research studies behavior of families having children with cancer, in a stressful situation and the role of various factors influencing reproductive strategy of this group of families.Materials and methods. Questioning of 798 mothers from the different regions of the Russian Federation having disabled children with cancer, ages from 5 till 18 years, in the remission. Results. Child cancer changes the system of parents’ vital values towards a pro-family orientation –family, children, health become their priorities. The analysis of average ideal (2.5), average desirable (2.6) and average expected (2.1) indicators showed high reproductive potential of respondents, which is more if compared with similar indicators in other domestic sociological researches. 40,8% of respondents proved the influence of child cancer on their family planning behavior. The article gives a detailed analysis of the factors determining these families reproduction strategy: socio-economic, socio-psychological and sociocultural, personal features of respondents, medical characteristics of the disease and the therapy methods. Summary. The research proves that the majority of the families with cancer children consolidates to overcome the difficulties connected with cancer treatment, becomes more patriarchal and close-knit. The role of family values, paternity, motherhood, and, accordingly, the need in more children increases in this group of families. The families need psychological and medico-social support taking into account the complex of their problems