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12篇 您的检索式:作者名="Ling, YuQuan"
    题名 作者 年代 出处 被引量
1Wind tunnel test on the effect of metal net fences on sand flux in a Gobi Desert, China显示文摘The Lanzhou-Xinjiang High-speed Railway runs through an expansive windy area in a Gobi Desert, and sand-blocking fences were built to protect the railway from destruction by wind-blown sand. However, the shielding effect of the sand-blocking fence is below the expectation. In this study, effects of metal net fences with porosities of 0.5 and 0.7 were tested in a wind tunnel to determine the effectiveness of the employed two kinds of fences in reducing wind velocity and restraining wind-blown sand. Specifically, the horizontal wind velocities and sediment flux densities above the gravel surface were measured under different free-stream wind velocities for the following conditions: no fence at all, single fence with a porosity of 0.5, single fence with a porosity of 0.7, double fences with a porosity of 0.5, and double fences with a porosity of 0.7. Experimental results showed that the horizontal wind velocity was more significantly decreased by the fence with a porosity of 0.5, especially for the double fences. The horizontal wind velocity decreased approximately 65% at a distance of 3.25 m(i.e., 13 H, where H denotes the fence height) downwind the double fences, and no reverse flow or vortex was observed on the leeward side. The sediment flux density decreased exponentially with height above the gravel surface downwind in all tested fences. The reduction percentage of total sediment flux density was higher for the fence with a porosity of 0.5 than for the fence with a porosity of 0.7, especially for the double fences. Furthermore, the decreasing percentage of total sediment flux density decreased with increasing free-stream wind velocity. The results suggest that compared with metal net fence with a porosity of 0.7, the metal net fence with a porosity of 0.5 is more effective for controlling wind-blown sand in the expansive windy area where the Lanzhou-Xinjiang High-speed Railway runs through.WANG Tao QU Jianjun LING Yuquan XIE Shengbo XIAO Jianhua 2017Journal of Arid Land2017,9,6:15
2Immunotherapy of tumor by targeting angiogenesis显示文摘Tumor growth and metastasis are angiogenesis-dependent. Anti-angiogenic therapy represents a new strategy for the development of anti-cancer therapies. In recent years, there has been made great progress in anti-angiogenic therapy. As far as the passive immunotherapy is concerned, a recombinant humanized antibody to vascular endothelial growth factor (VEGF)— Avastin has been approved by FDA as the first angiogenesis inhibitor to treat colorectal cancer. For active specific immunotherapy, various strategies for cancer vaccines, including whole en- dothelial cell vaccines, dendritic cell vaccines, DNA vaccines, and peptides or protein vaccines, have been developed to break immune tolerance against important molecules associated with tumor angiogenesis and induce angiogenesis-specific immune responses. This article reviews the angiogenesis-targeted immunotherapy of tumor from the above two aspects.HOU Jianmei TIAN Ling WEI Yuquan 2004Science China(Life Sciences)2004,47,6:5
3NEW HYDRAULIC ACTUATOR'S POSITION SERVOCONTROL STRATEGY显示文摘一个新水力的致动器—水力的肌肉(HM ) 被描述,并且致动器的特征和应用程序然后被分析 HM 是主要致动器的一个位置伺服控制在系统被安装。系统的数学模型被建立,几控制策略被讨论。与分部 PID 控制基于数学模型,模拟研究和试验性的调查,神经网络自我适应的 PID 控制采用了的自我适应的 PID 控制和单个神经原分别地被执行,并且结果与 PID 控制相比显示那,自我适应的 PID 控制不需要的自我适应的 PID 控制和单个神经原控制了的神经网络系统是精确模型并且有快反应,高控制精确性和强壮的坚韧性,他们对 HM 位置伺服控制很合适系统。KE Zunrong ZHU Yuquan LING Xuan 2007Chinese Journal of Mechanical Engineering2007,20,5:3
4Advances in identification and application of tumor antigen inducing anti-cancer responses显示文摘XIE Ke TIAN Ling DENG Hongxin WEI Yuquan 2003Chinese Science Bulletin2003,48,11:1
5Diachronous uplift of the Tibet Plateau starting 40 Myr ago显示文摘Chang Sun-Lin Lo Ching-Hua Lee Tung-Yi Zhang Yuquan Xie Yingwen Li Xianhua Wang Kuo-Lung Wang Pei Ling 1998Nature1998,394,6695:1
6A preliminary study of wind-blown sand movement and sand disaster prevention显示文摘Ling Yuquan Wu Zheng 1965Res Sand Disast Prev1965,,7:1
7Dynamic changes of a typical linear dune in the Tengger Desert显示文摘The dynamical processes of a typical linear dune including morphological features, dune ridge swing range and crest height were investigated at different monitoring periods in the hinterland of Tengger Desert. The results indicated that the development of linear dune depends on not only the northwesterly prevailing wind, but also the winds from northeast and southwest. The dune ridge swayed along its fundamental strike and took on an eastward movement gradually. The original dune strike was NW70° on August 3, 1994, and then changed to NE15° on April 21, 2001. The dune crest increased by 1.8 m longitudinally, which manifested strong wind-blown sand activities in this region. Wind erosion frequently occured at the bottom of sand dune, while sand accumulation appeared on its mid-upper section. The mean wind erosion depth was 25 cm on the bottom of linear dune and the height difference of the control points on the dune's ridge was 1.13 m. Although the linear dune swayed laterally, the horizontal displacement of its ridge moved eastward 5.8 m averagely. The swing range of the dune crest line is very distinct, with a maximum value of 13.2 m. The highest site on the K-profile swayed on both sides of the dune ridge and the heights were 19.88 m at the control point K5, 19.61 m at K6 and 19.05 m at K7, respectively. The results indicated that the lateral swing of the linear dune was distinct under the northwesterly wind and it moved toward east gradually.Zhang, KeCun Kai, KenJi Qu, JianJun Ling, YuQuan Niu, QingHe 2010Journal of Arid Land2010,2,4:1
8Increased expression of S100A6 promotes cell proliferation and migration in human hepatocellular carcinoma显示文摘Ziqiang Li Mei Tang Bo Ling Shiying Liu Yu Zheng Chunlai Nie Zhu Yuan Liangxue Zhou Gang Guo Aiping Tong Yuquan Wei 2014Journal of Molecular Medicine2014,,3:1
9Broadband Fluorescence Guided-Wave in DANS/PMMA Thin Film Waveguides显示文摘The broadband fluorescence guided-waves excited in DANS/PMMA polymer thin film waveguides by an Ar+laser beam were demonstrated in terms of the observation of mlines with colour array.Considering the high brightness of these m-lines observation,we assert that it is a kind of stimulated amplification of fluorescence guided-wave.WANG Huitian DONG Fengzhong ZHANG Zhanxiang YE Peixian QIU Ling SHEN Jifeng FU Xingfa SHEN Yuquan 1994Chinese Physics Letters1994,11,2:0
10Ultrafast Optical Response of Phthalocyanine Langmuir-Blodegett Film显示文摘The mechanism of 2,9,16,23-tetra-heptadecylamido substituted vanadyl phthalocyanine Langmuir-Blodegett film was studied with femtosecond laser pulses.An ultrafast decay due to phonon-exciton coupling greatly affected by temperature,and exciton-exciton annihilation leading to the recovery of the ground state(T~lops)and an even slower relaxation were observed.YUAN Ping XIA Zongju ZOU Yinghua QIU Ling SHEN Jifeng SHEN Yuquan XU Huijun 1994Chinese Physics Letters1994,11,4:0
11Ultrafast Time-Resolved Optical Kerr Effect in Phthalocyanine Langmuir-Blodegett Film显示文摘The resonant optical Kerr effect in the Langmuir-Blodegett film of 2,9,16,23-tetra heptadecylamido substituted vanadyl phthalocyanine was measured with femtosecond laser pulses to determine the relaxation time,and meanwhile slow decay components were observed.The ultrafast nonlinearity of the molecule was also measured.YUAN Ping XIA Zongju ZOU Yinghua QIU Ling SHEN Jifeng SHEN Yuquan XU Huijun 1994Chinese Physics Letters1994,11,7:0
12Observation of Optical Bistabilities in a Doped Polymer Thin Film Quasi-waveguide显示文摘Optical bistability was observed and studied in the output of reflected beam as well as in that of m-lines in a doped polymer thin film quasi-waveguide.The physical origin was demonstrated to be the existence of a mode spectrum and the high third order nonlinearity of the polymer film.It was also observed for the first time that the intensity variation of the reflected beam and the m-line in the hysteresis loops are complementary to each other.WANG Huitian DONG Fengzhong ZHANG Zhanxiang YE Peixian QIU Ling SHEN Jifeng FU Xingfa SHEN Yuquan 1995Chinese Physics Letters1995,12,4:0
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