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51.
52.
Anshu Dandia Shyam L. Gupta Aayushi Indora Pratibha Saini Vijay Parewa Kuldeep S. Rathore 《Tetrahedron letters》2017,58(12):1170-1175
We have synthesized and characterized Ag NPs decked GO composite and studied its role as reusable catalyst for the ‘ON WATER’ chemoselective synthesis of pyranodipyrazolones via the reaction of different carbonyl compounds with 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one. This method illustrates significant selectivity for pyranodipyrazolones over arylmethylene bispyrazolols and arylmethylenepyrazolones. Synergistic effect of heterogenic nature of water with reactants and Ag NPs/GO had profuse outcome on reaction as indicated by high TOF (18.03 × 10?5 mol g?1 min?1). Furthermore, catalyst was recycled for 7-times without significant loss of activity. 相似文献
53.
Summary The energy spectrum of sea level muons in the range (102÷104) GeV has been calculated from the latest directly measured JACEE primary spectrum using Fermilab results on pp→π± X and pp→K± X inclusive reactions. The conventional pion atmospheric diffusion equation after Bugaevet al. has been used in this analysis to account the flux of muons emerged from the multiple generation of mesons in air. The derived
muon spectrum has been compared with the earlier magnetic spectrograph data of Durham and Kiel groups. The latest BAKSAN scintillator
telescope data is well in agreement with the calculated integral spectrum originated from the meson decays in the range (1÷104) GeV. 相似文献
54.
Oseen’ approximations are used to study the slow motion of a viscous, incompressible, electrically conducting fluid past a
circular cylinder in the presence of a uniform aligned magnetic field. Using series truncation method, the analytical solutions
for the first three terms in the Fourier sine series expansion of the stream function are obtained. Numerical values of the
tangential drag for different values of magnetic interaction parameter and viscous Reynolds number are calculated. 相似文献
55.
Composition operators with closed range on the Bloch space 总被引:2,自引:0,他引:2
Pratibha Ghatage Jun Yan Dechao Zheng 《Proceedings of the American Mathematical Society》2001,129(7):2039-2044
In this note we investigate conditions under which a holomorphic self-map of the unit disk induces a composition operator with closed range on the Bloch space.
56.
57.
This is a study of the completeness properties of the space C
ps
(X) of continuous real-valued functions on a Tychonoff space X, where the function space has the pseudocompact-open topology. The properties range from complete metrizability to the Baire
space property.
Dedicated to Professor Robert A. McCoy 相似文献
58.
59.
Pratibha Srivastava Inder Pal Singh Kapoor Gurdip Singh Roland Fröhlich 《Journal of Thermal Analysis and Calorimetry》2010,100(1):233-238
Phenylenediammonium dibromide (PDADBr) salts have been prepared and characterized by X-ray crystallography. The thermal decomposition
of PDADBr has been studied by thermogravimetry (TG) and differential thermal analysis (DTA). Kinetic parameters have been
evaluated using model fitting and isoconversional methods. The thermolytic pathways have also been suggested which involve
proton transfer as a primary step to regenerate parent amine and HBr. Interaction between amine and HBr at higher temperature
yields gaseous products. 相似文献
60.
Palladium-catalyzed highly regioselective synthesis of benzotriazole appended benzosultams by the tandem-cyclization of functionalized ynamides with benzotriazoles has been accomplished. This transformation involves the formation of both CN and CC bonds in a single step. Donor solvents appear to enhance the yields of the products. The methodology is also applicable for the generation of triazole/tetrazole appended benzosultams. 相似文献