Abstract The non-linear analysis of any physical problem is capable of predicting the qualitative and quantitative aspects of the problem. In this article, the effects of the constraints like rotation, permeability and quadratic density profile on unidirectional solidification with buoyancy and small segregation coefficient were investigated using nonlinear theory. In this study, the system con...

Polecat populations show a very low genetic diversity and a high inbreeding coefficient. Furthermore, the estimate of effective population size is alarmingly low. Polecats Mustela putorius populations are structured into scattered breeding sub-units usually made up of one male and two females, according to a polygynous mating system. Because a strict spatio-temporal segregation was observed bet...

sometimes when hybridization in quantitative traits due to occurring of transgressive segregation phenomena in f2 and other generations, phenotypes are observed that are outside the scope of their parents. transgressive segregates can be fixed via selfing and selection. classical genetic and qtl studies know complementary action of genes as the main reason for the occurrence of the above phenom...

The difference of temperatures between an impurity and the surrounding gas in an open vibrated granular system is studied. It is shown that, in spite of the high inhomogeneity of the state, the temperature ratio remains constant in the bulk of the system. The lack of energy equipartition is associated to the change of sign of the pressure diffusion coefficient for the impurity at certain values...

In this paper we present results of a study on the yttrium doping in lead tungstate crystals. The crystal growth by modified Bridgman method is described. Results of trace analysis on raw materials and crystals are presented. The segregation coefficient of yttrium ions in lead tungstate crystals was determined. The scintillation emission and longitudinal transmittance spectra, light output, dec...

recognition equal units and segregation them and upshot planning per units most basic method for management forest units. aim this study presentation and comparison classification and regression tree (cart) and random forest (rf) algorithm for forest type mapping using aster satellite data in district one didactic and research forest's darabkola. in start using inventory network 500* 350 m...

Odor identification is one of the main tasks of the olfactory system. It is performed almost independently from the concentration of the odor providing a robust recognition. This capacity to ignore concentration information does not preclude the olfactory system from estimating concentration itself. Significant experimental evidence has indicated that the olfactory system is able to infer simul...

background :older adults with cerebrovascular accident (cva) show evidence of auditory and speech perception problems. in present study, it was examined whether these problems are due to impairments of concurrent auditory segregation procedure which is the basic level of auditory scene analysis and auditory organization in auditory scenes with competing sounds. methods : concurrent auditory seg...

the chemical composition and uniform distribution of alloying elements in the matrix of austempered ductile irons (adis) have significant influences on their properties, e.g. segregation of the alloying elements have detrimental effects on the mechanical properties of these materials. unlike previous studies, the homogenization treatment via partial melting was used in this study in order to re...

In this paper, the effect of solidification pressure on dendrite structure and characteristics carbides in H13 die steel ingot was investigated by experimental calculational methods. Based cooling rate, a formula is proposed to calculate secondary arm spacing: λ2 = 71.45 × R−0.37. It applicable when maximum value around 2 MPa rate between 0.5 3 K/s. With increasing from 0.1 MPa, effects segrega...