We extend the techniques developed by Millson and Raghunathan in [MR] to prove nonvanishing results for the cohomology of compact arithmetic quotients M of hyperbolic n-space H with values in the local coefficient systems associated to finite dimensional irreducible representations of the group SO(n, 1). We prove that all possible nonvanishing results compatible with the vanishing theorems of [...

The electrically conducting, incompressible and isothermal Newtonian fluid-flow in unsteady tank drainage is studied. perturbation method employed to obtain solution results have been compared with those of obtained by adomian decomposition result. are same as method. fluid worked out substitution ? = 0. Explicit expressions on behalf velocity field, flow rate, relationship however will the tim...

We investigate the determinants of geographical distances to parents. We focus on the role of family members who live outside the household (the parents themselves, and siblings), and on the distinction between the effects of life events and effects related to the timing with which these events have been experienced in the life course. We use data from the Netherlands Kinship Panel Study and li...

In the embryonic neocortex, neuronal precursors are generated in the ventricular zone (VZ) and accumulate in the cortical plate. Recently, the subventricular zone (SVZ) of the embryonic neocortex was recognized as an additional neurogenic site for both principal excitatory neurons and GABAergic inhibitory neurons. To gain insight into the neurogenesis of GABAergic neurons in the SVZ, we investi...

Netrin1 is a member of a family of secreted molecules implicated in axon guidance, neuronal migration and apoptosis during development of central nervous system (CNS). Netrin1 signals in CNS through a group of transmembrane receptors belonging to the DCC (deleted in colorectal cancer) and C. elegans Unc5-related families. Netrin1 mutant mice die usually at birth with several CNS defects, but he...

The ventricular zone (VZ) of the embryonic dorsal telencephalon is a major site for generating cortical projection neurons. The transcription factor Pax6 is expressed in apical progenitors (APs) residing in the VZ in a rostrolateral-high to caudomediallow gradient and its levels are highest at early stages of corticogenesis. Previous studies mainly focused on Pax6 / mice have implicated Pax6 in...

For theoretical designing of full-Heusler based spintroinc materials, people have long believed in the so-called Site Preference Rule (SPR). Very recently, according to the SPR, there are several studies on XA-type Hafnium-based Heusler alloys X₂YZ, i.e., Hf₂VAl, Hf₂CoZ (Z = Ga, In) and Hf₂CrZ (Z = Al, Ga, In). In this work, a series of Hf₂-based Heusler alloys, Hf₂VZ (Z = Al, Ga, In, Tl, Si, G...

We showed previously that the proneural genes Neurogenin1 (Ngn1) and Ngn2 are required to specify the phenotypes of early- and not late-born neurons in the neocortex, acting in part through repression of Mash1, a third cortically expressed proneural gene. The precise timing of Ngn1/2 specification activity was unexpected given these genes are expressed throughout cortical development, prompting...

Cytokinesis is an essential step in neurogenesis, yet the mechanisms that control cytokinesis in the developing CNS are not well understood. The flathead ( fh) mutation in rat results in cytokinesis failure in neural progenitors followed by apoptosis and a dramatic reduction in CNS growth. Here we present evidence that the fh mutation is caused by a single base deletion in exon 1 of the gene en...