维普中文期刊产品整合服务
42篇 您的检索式:作者名="Dewangan"
    题名 作者 年代 出处 被引量
1Luminescence properties of near-UV excitable yellow-orange light emitting warm CaSrAl_2SiO_7:Sm^(3+) phosphors显示文摘Single-phase CaSrAl_2 SiO_7:Sm^(3+) phosphors were synthesized by traditional high temperature solid state reaction method. Formation of samples and phase analysis were confirmed by X-ray diffraction technique. Morphology was done by field emission scanning electron microscopy and elemental compositions were confirmed by energy dispersive X-ray analysis. Present phosphors have tetragonal crystallography with space group P42_1 m. Average crystallite size was calculated by using Scherrer and Williamson-Hall method. Photoluminescence study of CaSrAl_2 SiO_7:Sm^(3+) phosphor was investigated.Under different excitation wavelengths, PL spectra consist of four emission bands at 564, 570, 601 and650 nm. The emission bands located at 564 and 570 nm are associated with the transition ~4 G_(5/2)→~6 H_(5/2)while emission bands at 601 and 650 nm are due to ~4 G_(5/2)→~6 H_(7/2) and ~4 G_(5/2)→~6 H_(9/2),respectively.Intense emission was obtained when phosphor was excited under 404 nm wavelength. Non-radiative energy transfer process involved in concentration quenching, was also discussed. CIE coordinate is found in yellow-orange region, hence CaSrAl_2SiO_7:Sm^(3+) phosphors emit yellow-orange light when efficiently excited by near UV(~400 nm) LED chip. Color purity and CCT of the phosphor were determined; CCT suggests that present phosphor is a good candidate as a warm yellow-orange color emitting phosphor. Effect of different heating rates and different UV exposure time on the TL glow curve of the phosphor was investigated. Activation energies and kinetic parameters for different traps were calculated by using peak shape method. TL emission spectrum was also recorded. Present article explains all the possible mechanisms associated with luminescence process in CaSrAl_2 SiO_7:Sm^(3+) phosphors.Shweta Sharma Nameeta Brahme D.P.Bisen Pradeep Dewangan 2019Journal of Rare Earths2019,37,4:3
2Synthesis of monodisperse In 2 O 3 nanoparticles and their d 0 ferromagnetism显示文摘S.K.S. Patel Khemchand Dewangan Simant Kumar Srivastav N.S. Gajbhiye 2014Current Applied Physics2014,,6:1
3Agricultural accidents in north eastern region of India显示文摘Kumar GV Dewangan KN 2009Safety Science2009,47,2:1
4A con- trol benchmark on the energy management of a plug- in hybrid electric vehicle 显示文摘Sciarretta A Serrao L Dewangan P C etal 2014Control Engineering Practice2014,29,:1
5Automatic inter- pretation of magnetic data using Euler deconvolution with nonlinear background显示文摘Dewangan P Ramprasad T Ramana M V 2007Pure and Applied Geophysics2007,164,11:1
6Structural features of diverse Pin-II proteinase inhibitor genes from Capsicum annuum显示文摘Mahajan N S Dewangan V 2014Planta2014,12,4:1
7Fault system and thermal regime in the vicinity of site NGHP-01-10,Krishna-Godavari basin,Bay of Bengal显示文摘Dewangan P Sriram G Ramprasad T 0,,10:1
8A control benchmark on the energy management of a plug-in hybrid electric vehicle显示文摘Sciarretta A Serrao L Dewangan P C 2014Control Engineering Practice2014,29,10:1
9Effect of vibration isolators in reduction of works stress during field operation of hand tractor显示文摘Tewari V K Dewangan K N 2009Biosysterms Engineering2009,103,2:1
10Iris recognition-an efficient biometricfor human identification and verification 显示文摘Dewangan a K Siddhiqui M A 2012International Journal ofEr^ineering and Advanced Technology2012,1,3:1
11A control benchmark onthe energy management of a plug - in hybrid electric vehicle 显示文摘Sciarretta A Serrao L Dewangan P C 2014Control Engineering Practice2014,,29:1
12Modeling and inversion of PS - wave moveout asymmetry for tilted TI media: Part I - Horizontal TTI layer 显示文摘PAWAN DEWANGAN LLYA TSVANKIN 2006Geophysics2006,,71:1
13Survey on user behav- ior trust evaluation in cloud computing显示文摘Dewangan M B K Shende M P 2012International Journal of Science Engineering and Technology Re- search2012,1,5:1
14Seabed morphology and gas venting features in the continental slope region of Krishna-Godavari basin, bay of Bengal-implications in gas-hydrate exploration 显示文摘DEWANGAN P RAMPRASAD T RAMANA M V 2013Marine and Petroleum Geology2013,27,7:1
15Design of Combretastatin A-4 Analogs as Tubulin Targeted Vascular Disrupting Agent with Special Emphasis on Their Cis-Restricted Isomers显示文摘Harish Rajak Pramod Kumar Dewangan Vijay Patel Deepak Kumar Jain Avineesh Singh Ravichandran Veerasamy Prabodh Chander Sharma Anshuman Dixit 2013Current Pharmaceutical Design2013,,10:1
16Noise characteristics of tractors and health effect on farmers 显示文摘DEWANGAN K N PRASANNA KUMAR G V TEWARI V K 2005Applied Acoustics2005,66,:1
17Methods of Gas Hy drate Concentration Estimation with Field Examples 显示文摘Kumar D Dash R Dewangan P 2009Geohorizons2009,,:1
18Modeling and inversion of PS-wave moveout asymmetry for tilted TI media: Part I - Horizontal TTIlayer显示文摘Dewangan P Tsvankin I 2006Geophysics2006,71,4:1
19Modeling and inversion of PS-wave moveout asymmetry for tilted TI media: Part 2 Dipping TTIlayer显示文摘Dewangan P Tsvankin I 2006Geophysics2006,71,4:1
20Structural damage existence prediction with few measurements 显示文摘Dewangan U K 2011International Journal of Engineering Science and Technology2011,10,3:1
返回顶部 每页显示:
共3页 首页 上一页 第1页 下一页 末页 /3 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费