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期刊In-situ studies on the micro-structure evolution of A2W2O7(A = Li, Na, K) during melting by high temperature Raman spectroscopy and density functional theory
《Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy》Wang, Jian[1]; You, Jinglin[1]; Wang, Min[1]; Lu, Liming[2]; Wan, Songming[3]; Sobol, A.A.[4]
In-situ high temperature Raman spectroscopic (HTRS) technique in combination with density functional theory (DFT) analysis has been adopted to investigate the micro-structure of solid and molten A2W2O7(A = L...显示全部
关键词:Bond length Charge transfer Crystalline materials Density functional theory Lithium Melting Microstructure Positive ions Raman spectroscopy Spectroscopic analysis stretching 
期刊Symmetry Reduction and Rotational Re-quantization of Symmetric Top Molecules at Local Mode Limit
《中国物理快报:英文版》1997年第9期656-659,共4页程继新 王效刚 林海 朱清时 
Supported by the National Natural Science Foundation of China under Grant No.29290304;Chinese Academy of Sciences under Grant No.KMX85-17.
The(400)stretching overtone band of AsH3 has been observed near 8029.0 cm^(-1) and analyzed in both symmetric and asymmetric top models.The results indicate that the dynamical symmetry of the(400)local mode state has ...显示全部
关键词:asymmetric stretching SYMMETRY 
期刊Formation and structure of polytetrafluoroethylene fibrils
《Journal of Applied Polymer Science》Zhang, Dong-Na[1]; Kou, Kai-Chang[1]; Zhang, Yu.[1]; Zhao, Qing-Xin[1]; Zheng, Zhen-Chao[1]
Polytetrafluoroethylene (PTFE) is a semi-crystalline polymer whose fibrils can be easily formed by stretching because of its low tensile activation energy. We prepared two series of PTFE samples with different elongat...显示全部
关键词:Activation energy Crystalline materials Crystallization Differential scanning calorimetry Porous materials stretching X ray diffraction 
期刊Organo-LDH synthesized via tricalcium aluminate hydration in the present of Na-dodecylbenzenesulfate aqueous solution and subsequent investigated by near-infrared and mid-infrared
《Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy》Zhang, Ping[1,2,3]; Wang, Tianqi[1]; Qian, Guangren[2]; Frost, Ray L.[3]
Na-dodecylbenzenesulfate (SDBS), a natural anionic surfactant, has been successfully intercalated into a Ca based LDH host structure during tricalcium aluminate hydration in the presence of SDBS aqueous solution (CaAl...显示全部
关键词:Anionic surfactants Hydration Intercalation Sodium Solutions stretching Thermoanalysis X ray diffraction 
期刊Repetitive mechanical stretching modulates IL-1&#x3b2; induced COX-2, MMP-1 expression, and PGE<sub>2</sub> production in human patellar tendon fibroblasts
《Gene》Guoguang Yang, Hee-Jeong Im and James H.-C. Wang
While mechanical loading is known to be essential in maintaining tendon homeostasis, repetitive mechanical loading has also been implicated in the etiology of tendon overuse injuries. The purpose of this study was to ...显示全部
关键词:stretching  Tendon fibroblasts  IL-1β   COX-2  MMP-1  PGE2 
期刊Dynamic characteristics of shaped micro-actuators solved using the differential quadrature method
《Journal of Micromechanics and Microengineering》Kuang, Jao-Hwa[1]; Chen, Chao-Jung[1]
This study examined the dynamic characteristics of nonlinear electrostatic pull-in behavior for shaped actuators in micro-electro-mechanical systems (MEMS). The natural frequencies of a fixed-fixed shaped beam vibrati...显示全部
关键词:Computer simulation Deflection (structures) Electrodes Electron beams Frequency agility Residual stresses Resonators stretching Vibrations (mechanical) Voltage measurement 
期刊Phase transition of poly(vinylidenefluoride-hexaflouropropylene) copolymer induced by stretching
《Gongneng Cailiao/Journal of Functional Materials》Huan, Yan[1,2]; Liu, Ya-Yan[1]; Yang, Yi-Fei[1,2]
Equipped with XRD, FTIR, DSC analytical method we study the influence of draw temperature and draw ratio on the α&rarrβphase transition of poly(vinylidenefluoride-hexaflouropropylene) (PVDF-HFP) copolymer. The r...显示全部
关键词:Differential scanning calorimetry Fourier transform infrared spectroscopy Phase transitions Piezoelectricity stretching X ray diffraction analysis 
期刊Post-treatment effect on morphology and performance of polyurethane-based hollow fiber membranes through melt-spinning method
《Journal of Membrane Science》Liu, Hailiang[1]; Xiao, Changfa[1]; Hu, Xiaoyu[1]; Liu, Meitian[1]
Polyurethane-based (PU-based) hollow fiber membranes were fabricated by melt-spinning method. The influence of hot-air treatment conditions including theoretical draw ratio, temperature and time on morphology and perf...显示全部
关键词:Fibers Microfiltration Morphology Polyurethanes Pore size stretching Wastewater treatment Water filtration 
期刊Geostrophic Spirals Generated by the Horizontal Diffusion of Vortex stretching in the Yellow Sea
《大气科学进展:英文版》2019年第2期219-230,共12页Xiangzhou SONG Rui Xin HUANG Dexing WU Fangli QIAO Guansuo WANG 
funded by the National Natural Science Foundation of China (Grant Nos.41306003 and 41430963);the Fundamental Research Funds for Central Universities (Grant Nos.0905-841313038,1100-841262028 and 0905-201462003);the China Postdoctoral Science Foundation (Grant No.2013M531647);the Natural Science Foundation of Shandong (Grant No.BS2013HZ015)
Horizontal velocity spirals with a clockwise rotation(downward looking) rate of 1.7?m^(-1), on average, were observed in the western and northern Yellow Sea from December 2006 to February 2007. With the observed therm...显示全部
关键词:geostrophic SPIRALS HORIZONTAL DIFFUSION VORTEX stretching and surface cooling effect 
期刊Infrared Spectra of La_(0.65)Ba_xMnO_(3-δ) Oxides
《稀有金属:英文版》2001年第4期255-258,共4页Jifan Hu1, Hongwei Qjn 1), Yanming Hao2, Yangxian Li2, Yizhong Wang3), Zhenxi Wan g3) 1) Department of Physics, Shandong University, Jinan 250100, China 2) School of Electronic Engineering and Material Science, Hehei University of Technology. Tianjing 30 
This work was financially supported by the Trans-Century Foundation of the Educational Ministry of China and by the National Nat
The infrared spectra of La0.65BaxMnO(3-|?£(c) (x = 0.35, 0.33 and 0.30) were investigated experimentally. The result shows that the sample La0.65BaxMnO(3-|?£(c) has the largest Curie temperature and the smalle...显示全部
关键词:infrared spectra colossal magnetoresistance effect perovskite manganite stretching vibration mode Jahn-Teller distortion 
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