It is shown how to use as horizontal symmetry the dicyclic group Q 6 ⊂ SU (2) in a supersymmetric unification SU (5)⊗SU (5)⊗SU (2) where one SU (5) acts on the first and second families, in a horizontal doublet, and the other acts on the third. This can lead to acceptable quark masses and mixings, with an economic choice of matter supermultiplets, and charged lepton masses can be accommodated.

Requiring that supersymmetric SU(5) and SU(6) grand unifications in the heterotic string theory must have 3 chiral families, adjoint (or higher representation) Higgs fields in the grand unified gauge group, and a non-abelian hidden sector, we construct such string models within the framework of free conformal field theory and asymmetric orbifolds. Within this framework, we construct all such st...

BACKGROUND Reports about the morphologic and functional characteristics of spermatozoa prepared by density gradient centrifugation (DC) or swim-up (SU) have produced discordant results. We have performed a proteomic comparison of cells prepared by DC and SU providing a molecular insight into the differences between these two methods of sperm cell isolation. METHODS Protein maps were obtained ...

This paper investigates power control and relay selection in Full Duplex Cognitive Relay Networks (FDCRNs), where the secondary-user (SU) relays can simultaneously receive data from the SU source and forward them to the SU destination. We study both non-coherent and coherent scenarios. In the non-coherent case, the SU relay forwards the signal from the SU source without regulating the phase; wh...

Ribulose-1,5-bisphosphate carboxylase/oxygenase (EC 4.1.1.39) was crystallized from a heterozygous tobacco (Nicotiana tabacum L.) aurea mutant (Su/su), its wild-type sibling (su/su), and green revertant plants regenerated from green spots found on leaves of haploid Su plants. No differences were found in the specific activity or kinetic parameters of this enzyme, when comparing Su/su and su/su ...

salmonella spp. are important food borne pathogens worldwide that frequently infect poultry flocks. this cross-sectional study was conducted to determine the prevalence of salmonella spp. colonization in broiler flocks in shiraz (southern iran) and to find the possible association of infection status with some potential risk factors including vaccination program and use of antibiotics. during o...

We report on recent work on the crucial role of vortices characterized by Z(N) flux for maintaining confinement at weak coupling in SU(N) gauge theory. The present work is a continuation of our on-going project over the last several years [1]. We begin by distinguishing between various types of vortices. Recall that in the continuum formulation there is no local distinction between pure SU(N) a...

In Drosophila, Notch and EGFR signalling pathways are closely intertwined. Their relationship is mostly antagonistic, and may in part be based on the phosphorylation of the Notch signal transducer Suppressor of Hairless [Su(H)] by MAPK. Su(H) is a transcription factor that together with several cofactors regulates the expression of Notch target genes. Here we address the consequences of a local...

We propose that quarks and leptons are interchangeable entities in the high-energy limit. This naturally results in the extension of [SU(3)] trinification to [SU(3)] quartification. In addition to the unbroken color SU(3)q of quarks, there is now also a color SU(3)l of leptons which reduces to an unbroken SU(2)l. We discuss the natural occurrence of SU(2)l doublets at the TeV energy scale, whic...

the purpose of this paper is to obtain necessary and suffcient conditionsfor existence approximate fixed point on geraghty-contraction. in this paper,denitions of approximate -pair fixed point for two maps tα , sα and theirdiameters are given in a metric space.