Spin asymmetry A_1^d and the spin-dependent structure function g_1^d of the deuteron at low values of x and Q^2

We present a precise measurement of the deuteron longitudinal spin asymmetry A_1^d and of the deuteron spin-dependent structure function g_1^d at Q^2 < 1 GeV^2 and 4*10^-5 < x < 2.5*10^-2 based on the data collected by the COMPASS experiment at CERN during the years 2002 and 2003. The statistical precision is tenfold better than that of the previous measurement in this region. The measured A_1^d and g_1^d are found to be consistent with zero in the whole range of x.Comment: 17 pages, 10 figure

A statistical theory of the surface of an anharmonic crystal

We perform a linearization of the transcendental equations for the moments of the single-particle atomic distribution functions of an anharmonic crystal with a surface. The transcendental equations can be derived from the nonlinear integral equations of the nonsymmetrized self-consistent field method. With the help of these equations we consider the relaxation of the lattice of an fcc crystal near its three surfaces and the mean square displacement of the atoms, assuming nearest-neighbor interactions. We discuss effects which result when interactions between nonnearest-neighbors are taken into account and also the application of the method to small cyrstalline particles. © 1986 Plenum Publishing Corporation

A statistical theory of the surface of an anharmonic crystal

We perform a linearization of the transcendental equations for the moments of the single-particle atomic distribution functions of an anharmonic crystal with a surface. The transcendental equations can be derived from the nonlinear integral equations of the nonsymmetrized self-consistent field method. With the help of these equations we consider the relaxation of the lattice of an fcc crystal near its three surfaces and the mean square displacement of the atoms, assuming nearest-neighbor interactions. We discuss effects which result when interactions between nonnearest-neighbors are taken into account and also the application of the method to small cyrstalline particles. © 1986 Plenum Publishing Corporation

‘GENETIC LOAD’ and changes in the chronology of early mortality in mini-pigs of ICG SB RAS

This paper describes the study of the common factors of mortality of suckling piglets. It is assumed that this parameter is influenced by recessive lethal factors of the genetic load in population. An immediate subject of study was the chronological analysis of mortality in piglets from the breeding group of mini-pigs of ICG SB RAS (Institute of Cytology and Genetics Siberian Branch of Russian Academy of Sciences) for the period from 2013 through 2019. The results revealed increased number of dead piglets in the early postnatal period (first five days after farrowing) over this time period. This observation was confirmed by a statistically significant correlation coefficient between the year of birth and the number of animals that died during the first five days of life. Mortality in the period from the 6th day to weaning, on the contrary, decreased to probable accidental death which was non-related to genetic causes. Observed redistribution of mortality may be associated with increased general homozygosity in population and, in part, with the optimization of the excessive for mini-pigs multiple fertility. It is possible that the consequence of the second cause is an increase in mortality and a decrease in multiple pregnancy. It is assumed that in the breeding group of mini-pigs of the ICG SB RAS, there is the process of eliminating excessive lethal ‘genetic load’ and optimizing homozygosity to a level ensuring maximum survival of piglets on the 6th day after birth. Results of regression analysis showed that the mortality of piglets in 2018 reached its maximum level and in future a decrease to the optimum level which is typical for domestic pigs is possible. In general, results of this study suggest that newborn piglets are represented by two types. The first type includes animals whose viability potential determined by recessive lethal ‘genetic load’ is zero – they cannot live outside mother’s body. The second type is represented by animals with a genetic viability potential equal to one –they can die only from accidental death