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排序方式: 共有841条查询结果,搜索用时 15 毫秒
31.
G. Seeta Rama Raju 《Physica B: Condensed Matter》2008,403(4):619-623
Newly synthesized reference MgLaLiSi2O7 and red luminescent Eu3+:MgLaLiSi2O7 powder phosphors have been successfully developed by a solid-state reaction method to analyze their emission and structural properties from the measurement of their XRD, SEM, FTIR and PL spectra. Emission spectra of Eu3+ powder phosphors have shown strong red emissions at 613 nm (5D0→7F2). These phosphors have also shown bright red emissions under a UV source. Based on the red emission performance, the Eu3+ concentration has been optimized to be at 0.3 mol%. 相似文献
32.
Murthy I. S. Sreenivasulu R. Alluraiah G. Ramesh Raju R. 《Russian Journal of General Chemistry》2019,89(8):1718-1723
Russian Journal of General Chemistry - A series of novel 1,2-isoxazole-pyridobenzimidazole is synthesized. Structures of the products are supported by 1H and 13C NMR, and mass spectra. All... 相似文献
33.
Nagu A. Vasikerappa K. Gidyonu P. Prathap Ch. Venkata Rao M. Rama Rao K. S. David Raju B. 《Research on Chemical Intermediates》2020,46(5):2669-2681
Research on Chemical Intermediates - MgO-supported Ni catalysts were selectively catalysed by the hydrogenation of benzonitrile to benzylamine in continuous flow at atmospheric pressure without any... 相似文献
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A new third‐order WENO scheme is proposed to achieve the desired order of convergence at the critical points for scalar hyperbolic equations. A new reference smoothness indicator is introduced, which satisfies the sufficient condition on the weights for the third‐order convergence. Following the truncation error analysis, we have shown that the proposed scheme achieves the desired order accurate for smooth solutions with arbitrary number of vanishing derivatives if the parameter ε satisfies certain conditions. We have made a comparative study of the proposed scheme with the existing schemes such as WENO‐JS, WENO‐Z, and WENO‐N3 through different numerical examples. The result shows that the proposed scheme (WENO‐MN3) achieves better performance than these schemes. 相似文献
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D. V. R. Raju V. J. Rao S. Badrinarayanan A. B. Mandale S. K. Kulkarni 《Applied Physics A: Materials Science & Processing》1990,50(3):339-342
X-ray photoelectron spectroscopy (XPS) together with argon ion sputtering was used to investigate the interface of the Zn/CdSnAs2 system at various temperatures. The formation of an intermediate compound between Zn and As is proposed. The surface enrichment of Cd and Sn at 200 and 400°C is explained in terms of bond breaking and lattice strain theories.NCL Communication No. 4352 相似文献
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B Deva Prasad Raju 《Journal of Physics and Chemistry of Solids》2003,64(8):1339-1347
EPR spectra of VO2+ ions doped in KZnClSO4·3H2O single crystals have been studied at different temperatures. The EPR spectrum shows a well-resolved hyperfine and superhyperfine structure patterns. The angular variation of EPR spectra reveals the presence of more than three magnetic complexes, which correspond to distinct sites of VO2+ ion. From the angular variation EPR data, the spin-Hamiltonian parameters are evaluated and discussed. The optical absorption spectrum studied at room temperature shows bands corresponding to C4v symmetry. From the EPR and optical data, the molecular-orbital bonding coefficient ε2 and β2 are evaluated and discussed. The observed five-line superhyperfine structure has been attributed to four protons (with I=1/2) from the surrounding water molecules of one of the vanadyl sites. 相似文献
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