排序方式: 共有10条查询结果,搜索用时 15 毫秒
1
1.
KM Varier AM Vinodkumar NVSV Prasad PV Madhusudhana Rao DL Sastry Lagy T Baby MC Radhakrishna NG Puttaswamy JJ Das P Sugathan N Madhavan AK Sinha DO Kataria 《Pramana》1999,53(3):529-533
Large enhancements have been observed in the sub-barrier fusion cross sections for Ti+Ni systems in our previous studies.
Coupled channel calculations incorporating couplings to 2+ and 3− states failed to explain these enhancements completely. A possibilty of transfer channels contributing to the residual enhancements
had been suggested. In order to investigate the role of relevant transfer channels, measurements of one- and two-nucleon transfer
were carried out for 46,48Ti+61Ni systems. The present paper gives the results of these studies. 相似文献
2.
3.
Summary A fast and selective method has been developed for the extraction of tellurium(IV) with mesityl oxide. Tellurium(IV) is quantitatively extracted by pure mesityl oxide from 2.5–3M hydrochloric acid solutions. After stripping with water, it is determined nephelometrically as the bluish sol. The extracted species probably has the composition TeCl4 · 2MeO. The optimum period of equilibration is 30 seconds. Tellurium can be extracted and determined in the presence of a large excess of selenium, silver, bismuth, lead, copper and nickel which are associated with it in minerals.
Zusammenfassung Ein schnelles und selektives Verfahren zur Extraktion von Tellur(IV) mit Mesityloxid wurde ausgearbeitet. Aus 2,5- bis 3-m Salzsäure gelingt diese Extraktion quantitativ. Nach Waschen mit Wasser wird das bläuliche Sol nephelometriert. Die extrahierte Substanz hat vermutlich die Zusammensetzung TeCl4 · 2MeO. Die Gleichgewichtseinstellung erfolgt in 30 sec. Tellur kann so in Gegenwart eines großen Überschusses von Se, Ag, Bi, Pb, Cu und Ni bestimmt werden, mit denen es in Mineralen vergesellschaftet ist.相似文献
4.
VGKM Pisipati D Madhavi Latha P Pardhasaradhi PV Datta Prasad 《Liquid Crystals Today》2013,22(4):70-76
Refractive index studies are carried out on two highly polar liquid crystals: 1. N-(p-n-methoxy benzylidene)-p-amino benzonitrile, PmBAB, 2. N-(p-n-ethoxy benzylidene)-p-amino benzonitrile, PeBAB. The experimental investigations are carried out in the visible region at four different wavelengths, namely, 633, 589, 546 and 436 nm. The two compounds exhibit only the nematic liquid crystalline phase in between the isotropic and crystalline solid. The dispersive power ω is estimated for two consecutive wavelengths for the case of <n>, ne and no for different wavelengths and found to be constant with temperature. Further the temperature gradients of ne and no are estimated, and the crossover temperature is obtained using dno/dT for all the wavelengths. 相似文献
5.
This paper outlines the benefits of computational steering for high performance computing applications. Lattice-Boltzmann mesoscale fluid simulations of binary and ternary amphiphilic fluids in two and three dimensions are used to illustrate the substantial improvements which computational steering offers in terms of resource efficiency and time to discover new physics. We discuss details of our current steering implementations and describe their future outlook with the advent of computational grids. 相似文献
6.
7.
Gallium can be quantitatively extracted at trace levels with 2-thenoyltrifluoroacetone in xylene at pH 4.5-6.0. Gallium is determined in the organic phase photometrically by complexation with Rhodamine B. The system conforms to Beer's law (at 565 nm) in the concentration range 2-59 mug ml . The complex is stable for 24 hr. Salting-out agents have no effect on the extraction. Gallium can be extracted and determined in a single extraction in presence of many elements associated with it, such as indium, thallium and aluminium. 相似文献
8.
Eluvathingal D Jemmis Bharatam V Prasad PV A Prasad Seiji Tsuzuki Kazutoshi Tanabe 《Journal of Chemical Sciences》1990,102(2):107-115
Singlet organosilylenes with a lone pair and an emptyp orbital are isolobal to trivalent borane if a B-H is equated to the lone pair on Si. Using this analogy, a particular isomer
of CSi2H2 (24) is predicted to be a stable structure. MNDO calculations on24 and many of its possible isomers suggest that24 is at global minimum on the potential energy surface of CSi2H2.Ab initio calculations using a, minimal STO-3G basis set, on some selected structures also support these results. 相似文献
9.
Vandana Tripathi Lagy T Baby PV Madhusudhana Rao SK Hui R Singh JJ Das P Sugathan N Madhavan AK Sinha 《Pramana》1999,53(3):535-539
The ground state and excited state transfer yields for the 2-neutron pickup channel in the 28Si+68Zn system have been measured explicitly. The recoil mass separator at the nuclear Science Centre, New Delhi was used for the
measurement. A NaI(T1) detector was used for detecting the deexcitation γ’s from the transfer products. The kinematic coincidence technique was employed for the transfer measurement. Simplified coupled
channels calculations show that out of all transfer channels the major contribution to the sub-barrier enhancement comes from
the ground state 2 neutron pickup channel with a ground state Q-value of+1.83 MeV. 相似文献
10.
The present study explores the free convective oblique Casson fluid over a stretching surface with non-linear thermal radiation effects. The governing physical problem is modelled and transformed into a set of coupled non-linear ordinary differential equations by suitable similarity transformation, which are solved numerically with the help of shooting method keeping the convergence control of 10-5 in computations. Influence of pertinent physical parameters on normal, tangential velocity profiles and temperature are expressed through graphs. Physical quantities of interest such as skin friction coefficients and local heat flux are investigated numerically. 相似文献
1