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91.
Bipin Singh Koranga Mohan Narayan S. Uma Sankar 《International Journal of Theoretical Physics》2011,50(3):760-766
The neutrino parameters determined from the solar neutrino data and the anti-neutrino parameters determined from KamLAND reactor
experiment are in good agreement with each other. However, the best fit points of the two sets differ from each other by about
10−5 eV2 in mass-square difference and by about 2° in the mixing angle. Future solar neutrino and reactor anti-neutrino experiments
are likely to reduce the uncertainties in these measurements. This, in turn, can lead to a signal for CPT violation in terms
a non-zero difference between neutrino and anti-neutrino parameters. In this paper, we propose a CPT violating mass matrix
which can give rise to the above differences in both mass-squared difference and mixing angle and study the constraints imposed
by the data on the parameters of the mass matrix. 相似文献
92.
93.
Venkatraman S Anand VG PrabhuRaja V Rath H Sankar J Chandrashekar TK Teng W Senge KR 《Chemical communications (Cambridge, England)》2002,(16):1660-1661
First successful syntheses and structural characterization of new core modified meso aryl azuliporphyrins by a simple [3 + 1] methodology are reported. 相似文献
94.
Rahul Pandit Samriddhi Sankar Ray Dhrubaditya Mitra 《The European Physical Journal B - Condensed Matter and Complex Systems》2008,64(3-4):463-469
We give an overview of the progress that has been made in recent years in understanding dynamic multiscaling in homogeneous, isotropic turbulence and related problems. We emphasise the similarity of this problem with the dynamic scaling of time-dependent correlation functions in the vicinity of a critical point in, e.g., a spin system. The universality of dynamic-multiscaling exponents in fluid turbulence is explored by detailed simulations of the GOY shell model for fluid turbulence. 相似文献
95.
96.
A Kerr metric describing a rotating black hole is obtained on the three brane in a five-dimensional Randall-Sundrum brane
world by considering a rotating five-dimensional black string in the bulk. We examine the causal structure of this space-time
through the geodesic equations. 相似文献
97.
Phonon anomalies in two intermediate valence compounds (IVC), SmS and Sm0·75Y0·25S have been investigated using breathing shell model (BSM). The BSM includes breathing motion of electron shells of the rare
earth atom due tof−d hybridization. The phonon dispersion curves of IVC, calculated from the present model, agree well with the measured data.
One-phonon density of states calculated from the present model compares well with the Raman spectra. 相似文献
98.
Raj K. Sehgal Sisir K. Sengupta R. Karl Dieter 《Journal of heterocyclic chemistry》1985,22(3):665-667
A single step synthesis of 2-deaminoactinomycin D ( 3a ) and 2-deamino-2-nitroactinomycin D ( 2a ) arising from actinomycin D ( 1a, AMD ) is reported. Structural confirmation was made by nmr, ir and chemical conversion to known materials. 相似文献
99.
Sankar P. Sanyal 《Journal of Physics and Chemistry of Solids》1981,42(5):429-432
A detailed investigation of the phonon dispersion and static and anharmonic properties has been carried out for ND4I using an extended three-body force shell model (ETSM) developed by Singh and Chandra. The ETSM results for phonon dispersion show better agreement with the experimental data than those obtained from the deformation dipole and rigid shell models. Calculated values have also been obtained for some other properties. 相似文献
100.
Kalyan Kali Sengupta Biswanath Basu Shipra Sengupta Sanghamitra Nandi 《Polyhedron》1983,2(10):983-986
Hypophosphite ion is oxidised by Au(III) in aqueous hydrochloric acid to give phosphorus acid and Au(I). The kinetics of the reaction has been studied spectrophotometrically in the UV region at different temperatures. The oxidation of hypophosphorous acid is first order with respect to both Au(III) and substrate. Hydrogen ion has no effect on the rate in acid media (0.15–1.0)M. The energy and entropy of activations are 128 ± 3.0kJ mol?1 and 135.8 ± 6.5 JK?1 mol?1 respectively. The results are interpreted in terms of the probable formation of intermediate Au(lI). 相似文献