Crossed-beam and beam-gas experiments on the reaction Ba HI→BaI H have been performed, in which the most probable collision energy ranges from 3 to 17 kcal/mol. The results, combined with previous experimental studies on this reaction system, show a remarkable collision energy dependence. Between low and high collision energies, a transition occurs in the intensity, width, and peak location of ...

Using an improved discharge recipe for the production of dibromocarbene (CBr2), we recently reassigned the electronic origin of the ~ AB1 ~ X A1 system, based on an extensive data set of isotope shifts for the pure bending transitions [C. Tao, C. Mukarakate, D. Brusse, Y. Mishchenko, S. A. Reid, J. Mol. Spectrosc. 240 (2006) 139–140]. In this study, we report the complete analysis of the fluore...

an attempt has been made to explore the general trends in the seismic response of planasymmetric structures when subjected to near-fault and far-fault ground motions. systems with structural wall elements in both orthogonal directions considering actual and common nonlinear behavior under bi-directional excitation were studied. idealized single-storey models with uni-axial eccentricity were emp...

Side chain and substituent engineering of conjugated polymers are important to their backbone design. Of particular interest here is how side chains and substituents influence the coplanarity of conjugated backbones. Steric hindrance is usually considered as the principal factor influencing the coplanarity. In this study, we used proper first-principle density functional theories to analyze the...

paddy de-awning using a de-awner increases the uniformity and flow rate of paddy grains through the orifices of hoppers, bucket elevators and chutes. in this study the effects of paddy variety, rotational blade speed and moisture content on performance of a prototype de-awner machine were investigated. the experiment was conducted in a factorial design with three factors, variety (hashemi and b...

The reorientational spectra in the midand far infrared of OH, OD, SH, SD, SeH, and TeH in a variety of different alkali halides are studied. All of these systems have ;300 cm modes due to librations of the diatomics about their centers of mass. A surprising change in the dynamics of these librational modes with increasing temperature is discovered: their absorption strengths are observed to dis...

We investigate the photolytic production of two radical intermediates in the reaction of OH with propene, one from addition of the hydroxyl radical to the terminal carbon and the other from addition to the center carbon. In a collision-free environment, we photodissociate a mixture of 1-bromo-2-propanol and 2-bromo-1-propanol at 193 nm to produce these radical intermediates. The data show two p...

Succinonitrile is a material of plastic crystal nature arising from the low energy barrier between synclinal and antiperiplanar isomerization around the central C-C bond, while its high polarity makes it an efficient solvent for a wide variety of salts including ionic liquids. A prediction of the equilibrium dihedral angle - in the absence of experimental data - suffers from the shallow potenti...

objective(s):protective effects of diuretics, particularly of hydrochlorothiazide (hct), for the development of seizure attacksepilepsy have been described in vivo. however, itsthe mechanism of action of hct is unknownneeds to be elucidated. materials and methods: extracellular field potentials were recorded from the ca1- and ca3-subfields of the hippocampus of rats. epileptiform discharges wer...