This paper establishes a new limitative relation between the polymorphic lambda calculus and the kind of higher order type theory which is em bodied in the logic of toposes It is shown that any embedding in a topos of the cartesian closed category of closed types of a model of the poly morphic lambda calculus must place the poly morphic types well away from the powertypes of the topos in the se...

In this study, an Eulerian-Eulerian multi-fluid model (MFM) was used to simulate the segregation pattern of a conical fluidized bed containing ternary mixtures of equidensity TiO2‌ particles. Experimental 'freeze–sieving' method was employed to determine the axial mass fraction profiles of the different-sized particles, and validate the simulation results. The profiles of mass fraction for larg...

The growth hormone gene could be an attractive candidate gene for milk production in goats. Single-strand conformation polymorphism was used to identify polymorphism at the goat growth hormone (gGH) gene. For this purpose, genotyping of 90 Talli goat breeds was performed. Nine conformational patterns were observed in exon 4 of the gGH gene, with frequencies of 27.7% for the homozygous pattern (...

Caucasian tur (Capra caucasica) is native to Greater Caucasus Mountain Chain from Azerbaijan and Georgia in the East Krasnodar region of Russia West. This species divided into two subspecies (by some authors species)—East-Caucasian West-Caucasian a subpopulation referred as Mid-Caucasian tur. Up date most genetic studies are based on mitochondrial DNA sequences comprehensive investigation nucle...

Several species of the genus Xiphophorus are polymorphic for specific pigment patterns. Some of these give rise to malignant melanoma following the appropriate crossings. For one of these pattern loci from the playfish Xiphophorus maculatus the melanoma-inducing gene has been cloned and found to encode a novel receptor tyrosine kinase, designated Xmrk. Using molecular probes from this gene in S...