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31.
Uday Chand De 《Indagationes Mathematicae》2009,20(2):191-200
We study locally and globally ø-quasiconformally symmetric Sasakian manifolds. We show that a globally ø-quasiconformally symmetric Sasakian manifold is globally ø-symmetric. Some observations for a 3-dimensional locally ø-symmetric Sasakian manifold are given. We also give an example of a 3-dimensional locally ø-quasiconformally symmetric Sasakian manifold. 相似文献
32.
The structural, microstructural, polarization, magnetization, dielectric constant, and relaxor characteristics of 0.7BiFeO3-0.3BaTiO3 (BF-BT) nanocrystals have been studied. BF-BT nanocrystals were prepared by a chemical route using polyvinyl alcohol as surfactant. The phase structure is confirmed by X-ray diffraction and average particle size by transmission and scanning electron microscopy. The magnetoelectric coupling is studied by polarization hysteresis loops under the influence of applied magnetic field and the phase transition anomaly. The diffuse phase transition is studied by modified Curie-Weiss law and relaxor characteristics by Vogel-Fulcher relation. 相似文献
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J. Goswamy A. Sharma D. Mehta B. Chand N. Singh P. N. Trehan P. Singh R. G. Pilley H. G. Devare R. K. Bhowmik C. R. Praharaj 《Zeitschrift für Physik A Hadrons and Nuclei》1992,344(2):233-234
High spin states in 120Xe, populated via107Ag(16O, p2n) and108Pd(16O, 4n)reactions have been studied using γ-ray spectroscopic techniques. 21 new transitions have been added to extend the level scheme. Two S-bands are extended upto 26+ and 22+;these bands are found to cross the g. s band at hΩ=0. 39 and 0. 47 MeV. The band structures have been discussed within the framework of CSM. 相似文献
36.
+ silicon wafer held at 573 K, are measured over a temperature range 37–307 K and analyzed in terms of thermionic emission–diffusion
(TED) theory by incorporating the concept of barrier inhomogeneities through a Gaussian distribution function. The process
adopted is shown to yield an ideal Schottky diode with a near constant barrier height of 0.734 V and ideality factor 1.05
in the temperature interval 215–307 K. Below 215 K, both the barrier height (φbo) and the ideality factor (η) exhibit abnormal temperature dependence and are explained by invoking two sets of Gaussian distributions
of barrier heights at 84–215 K and 37–84 K. Further, it is demonstrated that the forward bias makes the Gaussian distribution
dynamic so that the mean fluctuates (i.e., increases or decreases depending on whether its voltage coefficient is positive
or negative) and the standard deviation decreases progressively, i.e., the barrier homogenizes temporarily. The changes occur
in such a way that the apparent barrier height at any bias is always higher than at zero-bias. Finally, it is pointed out
that the presence of single/multiple distributions can be ascertained and the values of respective parameters deduced from
the φap vs. 1/T plot itself. Also, the inverse ideality factor versus inverse temperature plot provides bias coefficients of the
mean barrier height and standard deviation of the distribution function.
Received: 6 January 1997/Accepted: 29 April 1997 相似文献
37.
Adare A Adler SS Afanasiev S Aidala C Ajitanand NN Akiba Y Al-Bataineh H Alexander J Al-Jamel A Aoki K Aphecetche L Armendariz R Aronson SH Asai J Atomssa ET Averbeck R Awes TC Azmoun B Babintsev V Baksay G Baksay L Baldisseri A Barish KN Barnes PD Bassalleck B Bathe S Batsouli S Baublis V Bauer F Bazilevsky A Belikov S Bennett R Berdnikov Y Bickley AA Bjorndal MT Boissevain JG Borel H Boyle K Brooks ML Brown DS Bruner N Bucher D Buesching H Bumazhnov V Bunce G Burward-Hoy JM Butsyk S Camard X 《Physical review letters》2007,98(23):232302
We present azimuthal angle correlations of intermediate transverse momentum (1-4 GeV/c) hadrons from dijets in Cu+Cu and Au+Au collisions at square root sNN=62.4 and 200 GeV. The away-side dijet induced azimuthal correlation is broadened, non-Gaussian, and peaked away from Delta phi=pi in central and semicentral collisions in all the systems. The broadening and peak location are found to depend upon the number of participants in the collision, but not on the collision energy or beam nuclei. These results are consistent with sound or shock wave models, but pose challenges to Cherenkov gluon radiation models. 相似文献
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Significant studies on phospholipases optimization, characterization, physiological role and industrial potential have been
conducted worldwide. Some of them have been directed for biotechnological advances such as gene discovery and functional enhancement
by protein engineering. Others reported phospholipases as virulence factor and major cause of pathophysiological effects.
A general overview on phospholipase is needed for the identification of new reliable and efficient phospholipase, which would
be potentially used in number of industrial and medical applications. Phospholipases catalyse the hydrolysis of one or more
ester and phosphodiester bonds of glycerophospholipids. They vary in site of action on phospholipid which can be used industrially
for modification/production of new phospholipids. Catalytically active phospholipase mainly use phosphatidylcholine as major
substrate, but they can also show specificity with other phospholipids. Several accurate phospholipase assay methods are known,
but a rapid and reliable method for high-throughput screening is still a challenge for efficient supply of superior phospholipases
and their practical applications. Major application of phospholipase is in industries like oil refinery, health food manufacturing,
dairy, cosmetics etc. All types of phospholipases can be involved as virulence factor. They can also be used as diagnostic
markers for microbial infection. The importance of phospholipase in virulence is proven and inhibitors of the enzyme can be
used as candidate for preventing the associated disease. 相似文献