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Search Results: 1 - 10 of 150631 matches for " WANG Yan-ting? "
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WANG Yan-ting,JIN Hao?,GAO Su-ying?
河北科技大学学报 , 2009, DOI: 10.7535/hbkd.2009yx04022
Abstract: 对高等教育与区域经济的场间耦合作用进行了研究,提出了高等教育对区域经济发展的贡献率的数学模型,并验证了二者的正相关性,论文以河北省高等教育与经济发展关系为例分析计算了高等教育对经济增长率的贡献,验证了数学模型的合理性。
Bone morphogenetic protein-15 in follicle fluid combined with age may differentiate between successful and unsuccessful poor ovarian responders
Wu Yan-Ting,Wang Ting-Ting,Chen Xi-Jing,Zhu Xiao-Ming
Reproductive Biology and Endocrinology , 2012, DOI: 10.1186/1477-7827-10-116
Abstract: Background The counselling of poor ovarian responders about the probability of pregnancy remains a puzzle for gynaecologists. The aim of this study was to optimise the management of poor responders by investigating the role of the oocyte-derived factor bone morphogenetic protein-15 (BMP-15) combined with chronological age in the prediction of the outcome of in-vitro fertilisation-embryo transfer (IVF-ET) in poor responders. Methods A retrospective study conducted in a university hospital. A total of 207 poor ovarian responders who reached the ovum pick-up stage undergoing IVF/intracytoplasmic sperm injection (ICSI) with three or fewer follicles no less than 14 mm on the day of oocyte retrieval were recruited from July 1, 2008 to December 31, 2009. Another 215 coinstantaneous cycles with normal responses were selected as controls. The BMP-15 levels in the follicular fluid (FF) of the 207 poor responders were analysed by western blot. Based on the FF BMP-15 level and age, poor responders were sub-divided into four groups. The main outcome measures were the FF BMP-15 level, implantation rate, pregnancy rate, and live birth rate. Results The implantation rate (24.2% vs. 15.3%), chemical pregnancy rate (40% vs. 23.7%), clinical pregnancy rate (36.5% vs. 20.4%) and live birth rate (29.4% vs. 15.1%) in the high BMP-15 group were significantly higher than those in the low BMP-15 group. Furthermore, poor responders aged less than or equal to 35 years with a higher FF BMP-15 level had the best implantation, pregnancy and live birth rates, which were comparable with those of normal responders. Conclusions Our study suggests a potential role of BMP-15 in the prediction of the IVF outcome. A high FF BMP-15 combined with an age less than or equal to 35 years may be used as a potential indicator for repeating IVF cycles in poor ovarian responders.
A Non-uniform Aspect Ratio Conversion Algorithm Based on Visual Perception

HU Yan-ting,GAO Xin-bo,LU Wen,WANG Ti-sheng,

中国图象图形学报 , 2009,
Abstract: With the emergence of HDTV, the application of aspect ratio conversion (ARC) is getting wider in related fields. In this paper, a new aspect ratio conversion algorithm is proposed based on human visual perception. To start with, the fuzzy cluster algorithm based on the modified partition fuzzy degree algorithm is applied to cluster motion vectors adaptively, and then the image motion center of gravity (MCOG) is estimated based on the clustering result. Moreover, to solve the dithering artifact, a splitting region approach based on MCOG and center region of image is developed. Finally, different regions of image are scaled with different ratios. Experimental results illustrate that the proposed method has good consistency with the human visual perception and show its superiority.
Optical Dispersion Behavior and Band Gap Energy of Relaxor Ferroelectric 0.92Pb(Mg1/3Nb2/3)O3-0.08PbTiO3 Single Crystal

LIN Yan-Ting,REN Bo,ZHAO Xiang-Yong,WANG Fei-Fei,WANG Yao-Jin,XU Hai-Qing,LIN Di,LUO Hao-Su,

中国物理快报 , 2009,
Abstract: Refractive indices and extinction coefficients of 0.92Pb(Mg1/3Nb2/3)O3-0.08PbTiO3(PMN-0.08PT) single crystal are investigated by variable angle spectroscopic ellipsometry (VASE) at different wavelengths. The parameters relative to the energy band structure are obtained by fitting to the single-oscillator dispersion equation, and the band gap energy is also deduced from the Tauc equation. Similar to most oxygen-octahedra ferroelectrics, PMN-0.08PT has the same dispersion behavior described by the refractive-index dispersion parameters.
Effect of external magnetic field on the coherence properties of degenerated two-level atomic system

Zhao Jian-Ming,Wang Li-Rong,Zhao Yan-Ting,Ma Jie,Xiao Lian-Tuan,Jia Suo-Tang,
,汪丽蓉,赵延霆,马 杰,肖连团,贾锁堂

物理学报 , 2005,
Abstract: 在铯原子简并二能级系统中6S1/2F=4—6P3/2 F'=5 的循环跃迁上获得了电磁感应吸收(EIA)峰,并研究了轴向均匀磁场对二能级系统相干效应的影响,即存在轴向均匀磁场时,观测到在铯原子6S1/2F=4—6P3/2F'=5 跃迁频率处EIA和电磁诱导透明(EIT)的混合结构,在合适的实验条件下,其结果与Ye等(2002)的理论分析相一致.
Photoassociative Production and Detection of Ultracold Polar RbCs Molecules

JI Zhong-Hua,ZHANG Hong-Shan,WU Ji-Zhou,YUAN Jin-Peng,ZHAO Yan-Ting,MA Jie,WANG Li-Rong,XIAO Lian-Tuan,JIA Suo-Tang,

中国物理快报 , 2011,
Experimental investigation of slow light propagation in degenerate two-level system
Wang Li-Rong,Zhao Yan-Ting,Ma Jie,Zhao Jian-Ming,Xiao Lian-Tuan,Jia Suo-Tang,

中国物理 B , 2006,
Abstract: Slowing a light pulse in a degenerate two-level system is observed with a double-frequency sweeping technique. The effects of coupling beam intensity, cell temperature and frequency detunings of the coupling and probe beams in resonance, on the slowing of light propagation in such a system are investigated. It is found that group velocities depend strongly on polarization combinations. A group velocity $v_{\rm g}$=6760m/s of light pulses in caesium vapour is obtained under the optimal parameters.
Cold cesium molecules produced directly in a magneto-optical trap

Zhang Hong-Shan,Ji Zhong-Hu,Yuan Jin-Peng,Zhao Yan-Ting,Ma Jie,Wang Li-Rong,Xiao Lian-Tuan,Jia Suo-Tang,

中国物理 B , 2011,
Abstract: We report on the observation of ultracold ground electric-state cesium molecules produced directly in a magneto- optical trap with a good signal-to-noise ratio. These molecules arise from the photoassociation of magneto-optical trap lasers and they are detected by resonantly enhanced multiphoton ionization technology. The production rate of ultracold cesium molecules is up to 4×104 s-1. We measure the characteristic time of the ground electric-state cesium molecules generated in the experiment and investigate the Cs2+ molecular ion intensity as a function of the trapping laser intensity and the ionization pulse laser energy. We conclude that the production of cold cesium molecules may be enhanced by using appropriate experimental parameters, which is useful for future experiments involving the production and trapping of ultracold ground electric-state molecules.
Dependence of loading time on control parameters in a standard vapour-loaded magneto-optical trap

Zhang Yi-Chi,Wu Ji-Zhou,Li Yu-Qing,Ma Jie,Wang Li-Rong,Zhao Yan-Ting,Xiao Lian-Tuan,Jia Suo-Tang,

中国物理 B , 2011,
Abstract: Loading time is one of the most important dynamic characteristics of a magneto-optical trap. In this paper, we primarily report on a detailed experimental study of the effects of some magneto-optical trap control parameters on loading time, including the background vacuum pressure, the magnetic field gradient, and the intensities of trapping and repumping lasers. We compare the results with previous theoretical and experimental results, and give qualitative analysis. These experimental investigations offer some useful guidelines to control the loading time of magneto-optical traps. The controllable loading time achieved is helpful to enhance the signal-to-noise ratio of photoassociation spectroscopy, which is remarkably improved from 7 to 28.6.
Anti-Inflammatory Effects and Mechanisms of Fatsia polycarpa Hayata and Its Constituents
Hsueh-Ling Cheng,Nurkholis,Shi-Yie Cheng,Shen-Da Huang,Yan-Ting Lu,Xiao-Wen Wang,Yu-Liang Liu,Chang-Hung Chou
Evidence-Based Complementary and Alternative Medicine , 2013, DOI: 10.1155/2013/857213
Abstract: Fatsia polycarpa, a plant endemic to Taiwan, is an herbal medicine known for treating several inflammation-related diseases, but its biological function needs scientific support. Thus, the anti-inflammatory effects and mechanisms of the methanolic crude extract (MCE) of F. polycarpa and its feature constituents, that is, brassicasterol (a phytosterol), triterpenoids 3α-hydroxyolean-11,13(18)-dien-28-oic acid (HODA), 3α-hydroxyolean-11-en-28,13β-olide (HOEO), fatsicarpain D, and fatsicarpain F, were investigated. MCE and HOEO, but not brassicasterol, dose-dependently inhibited lipopolysaccharide- (LPS-)induced expression of inducible nitric oxide synthase and cyclooxygenase-2 in RAW 264.7 macrophage line, whereas HODA, fatsicarpain D and fatsicarpain F were toxic to RAW cells. Additionally, MCE and HOEO suppressed LPS-induced production of nitric oxide, prostaglandin E2, and interleukin-1β and interfered with LPS-promoted activation of the inhibitor kappa B kinase (IKK)/nuclear factor-κB (NF-κB) pathway, and that of the mitogen-activated protein kinases (MAPKs) extracellular signal regulated kinase (ERK), c-Jun N-terminal kinase (JNK), and p38. In animal tests, MCE and HOEO effectively ameliorated 12-O-tetradecanoylphorobol-13 acetate- (TPA-)induced ear edema of mice. Thus, MCE of F. polycarpa exhibited an obvious anti-inflammatory activity in vivo and in vitro that likely involved the inhibition of the IKK/NF-κB pathway and the MAPKs, which may be attributed by triterpenoids such as HOEO. 1. Introduction There are three species in the genus of Fatsia (belonging to the Araliaceae family), that is, Fatsia polycarpa Hayata, an evergreen shrub endemic to Taiwan, Fatsia japonica, and Fatsia oligocarpela, originated from Japan and Bonin Islands, respectively [1]. F. japonica and F. polycarpa have been used as an herbal medicine in Japan and in Taiwan in treating diseases, such as coughing, ankylosing spondylitis, osteoarthritis, rheumatism, rheumatoid arthritis and tendinitis, and in blood circulation improvement [1, 2]. Nonetheless, the therapeutic activity of F. polycarpa has seldom been scientifically investigated and the bioactive constituents from these plants are not clear. The constituents in the methanolic extract of leaves and twigs of Fatsia polycarpa were previously characterized [1]. The extract was rich in phytosterols in which brassicasterol was a major one (unpublished data). Brassicasterol is a common phytosterol present in many plants and was suggested to reduce blood cholesterol levels together with other phytosterols [3]. Triterpenoids is
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