The mechanism(s) for post-bed rest (BR) orthostatic intolerance is equivocal. The vestibulosympathetic reflex contributes to postural blood pressure regulation. It was hypothesized that muscle sympathetic nerve responses to otolith stimulation would be attenuated by prolonged head-down BR. Arterial blood pressure, heart rate, muscle sympathetic nerve activity (MSNA), and peripheral vascular con...

We investigate the possibility of a large Bs-B̄s mixing phase in the context of grand unified theory (GUT) models, e.g., SO(10) and SU(5). In these models, we find that a large phase of Bs mixing is correlated with Br(b → sγ), Br(τ → μγ) and Br(Bs → μμ) for large tanβ. In the case of the SO(10) model, the large phase of Bs mixing is correlated with Br(b → sγ) and Br(Bs → μμ) and we find that a l...

The title compound, [Fe(η(5)-C(5)H(5))(NH(2)CH(2)CHBrCH(2)Br)(CO)(2)](BF(4)) contains an Fe(II) cation with a three-legged piano-stool coordination. The NH(2)CH(2)CHBrCH(2)Br ligand contains a chiral carbon atom. The Fe-N bond length is 2.011 (3) Å and the Fe-Cp centroid distance is 1.7189 (5) Å. In the crystal, the ions are linked via two N-H⋯F inter-actions and a weak N-H⋯Br inter-action.

In the title compound, C(16)H(18)Cl(2)N(+)·Br(-), the dihedral angle between the aromatic ring planes is 57.73 (5)°. In the absence of any strong hydrogen bonds, the structure results from a large number of competing weaker inter-actions including Cl⋯Cl [3.4610 (5) Å] and C-H⋯Cl contacts and both (aryl) C-H⋯Br and N(+)-Csp(3)-H⋯Br(-) cation-anion inter-actions.

1. By the use of a special analytical technique it has been possible to study the accumulation of halogens in the cell sap of Nitella. 2. From a dilute solution, Br may be accumulated in the sap in a concentration much greater than that of the external solution. The conductivity of the sap may be markedly increased by such accumulation. The process is a slow one so that a month or more may be r...

Genetic divergence of thirty three drought tolerant rice (Oryza sativa L.) genotypes were studied through Mohalanobis’s D and principal component analysis for twelve characters. The genotypes were grouped into seven clusters. The cluster I and II were comprised of the maximum number of genotypes (eight) in each followed by cluster V containing five genotypes. The highest inter-cluster distance ...

In the title compound, C(6)H(5)N(2) (+)·Br(-), the pyridine N atom is protonated and involved in an inter-molecular N-H⋯Br hydrogen bond which, together with weak C-H⋯N hydrogen bonds, results in the formation of a chain along the c axis. Weak inter-molecular C-H⋯Br inter-actions between pyridine H atoms and Br(-) anions connect these chains into a network parallel to the bc plane.