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| 1 | The first time observations of low-latitude ionospheric irregularities by VHF radar in Hainan显示文摘Sanya VHF radar (18.4°N, 109.6°E, dip latitude 12.8°N) at Hainan Island is the first coherent backscatter radar for sounding low-latitude ionospheric irregularities in the mainland of China. In this paper, we present the first results of low-latitude ionospheric E and F region irregularities using the radar data during the period from February 2009 to March 2010. The Doppler velocity of radar echoes from E region field aligned irregularities (FAIs) was about several tens of meters per second, while the Doppler spectral width was appreciably larger than the velocity, and could reach one hundred meters per second, indicating that the observed E region FAIs belonged to type 2 irregularities. The observations of range time intensity (RTI) maps of FAIs showed that E region irregularities most often occurred at night within the altitude range 85-115 km, and were rarely observed at afternoon hours. The percentage occurrence of E region FAIs maximized during spring months (Feb.-May) with a peak value over 80%. The heights at which the strongest echo related FAIs occurred were mainly around 100 km, lower than h'Es and the difference is mostly 10-20 km. December solstice seemed to be the minimum period of occurrence when the FAI echoes were commonly detected at a narrow altitude range 90-100 km. Moreover, simultaneous radar and GPS observations during spread F events in the pre-midnight hours of solar minimum revealed that significant GPS L band scintillations coincided with the appearance of F region plasma plume structures, which extended up to 450 km in altitude. | NING BaiQi HU LianHuan LI GuoZhu LIU LiBo WAN WeiXing | 2012 | Science China(Technological Sciences)2012,55,5: | 15 |
| 2 | A comparison of mesospheric winds measured by FPI and meteor radar located at 40N显示文摘In this paper, winds derived from OH Meinel 892.0 nm detection by an FPI (Fabry-Perot Interferometer) are compared with the simultaneous wind measurements from a meteor radar during April-May of 2010. The peak height of OH Meinel 892.0 nm is about 87 km. The variations of FPI wind at 87 km mostly have the similar track to meteor radar wind at 87 km, and the data values of FPI wind mainly fall into the range of meteor radar wind. However, there are still quantitative differences between the observations of the two systems. The best cross-correlation occurs in meridional winds from two systems in April of 2010. An obvious wave signal with 0.2 cycle/d frequency is found in meridional winds observed by both FPI and meteor radar. | JIANG GuoYing XU JiYao YUAN Wei NING BaiQi WAN WeiXing HU LianHuan | 2012 | Science China(Technological Sciences)2012,55,5: | 12 |
| 3 | Olivine-norite rock detected by the lunar rover Yutu-2 likely crystallized from the SPA-impact melt pool显示文摘Chang’E-4 landed in the South Pole-Aitken(SPA)basin,providing a unique chance to probe the composition of the lunar interior.Its landing site is located on ejecta strips in Von Karm´an crater that´possibly originate from the neighboring Finsen crater.A surface rock and the lunar regolith at 10 sites along the rover Yutu-2 track were measured by the onboard Visible and Near-Infrared Imaging Spectrometer in the first three lunar days of mission operations.In situ spectra of the regolith have peak band positions at 1 and 2μm,similar to the spectral data of Finsen ejecta from the Moon Mineralogy Mapper,which confirms that the regolith’s composition of the landing area is mostly similar to that of Finsen ejecta.The rock spectrum shows similar band peak positions,but stronger absorptions,suggesting relatively fresh exposure.The rock may consist of 38.1±5.4%low-Ca pyroxene,13.9±5.1%olivine and 48.0±3.1%plagioclase,referred to as olivine-norite.The plagioclase-abundant and olivine-poor modal composition of the rock is inconsistent with the origin of the mantle,but representative of the lunar lower crust.Alternatively,the rock crystallized from the impact-derived melt pool formed by the SPA-impact event via mixing the lunar crust and mantle materials.This scenario is consistent with fast-cooling thermal conditions of a shallow melt pool,indicated by the fine to medium-sized texture(<3 mm)of the rock and the SPA-impact melting model[Icarus 2012;220:730–43]. | Honglei Lin Zhiping He Wei Yang Yangting Lin Rui Xu Chi Zhang Meng-Hua Zhu Rui Chang Jinhai Zhang Chunlai Li Hongyu Lin Yang Liu Sheng Gou Yong Wei Sen Hu Changbin Xue Jianfeng Yang Jie Zhong Xiaohui Fu Weixing Wan Yongliao Zou | 2020 | National Science Review2020,7,5: | 9 |
| 4 | Effect of glycyrrhizin on traumatic brain injury in rats and its mechanism显示文摘ObjectiveTo 在创伤的大脑损害(TBI ) MethodsMale Sprague-Dawley 老鼠随机被划分成三个组以后,在老鼠在高活动性的组盒子 1 的表示(HMGB1 ) 上象它的效果一样调查 glycyrrhizin (Gly ) 的 neuroprotective 效果:假冒的组 TBI 组和 TBI + Gly 组(n = 36 每组) 。老鼠 TBI 模型被使用修改 Feeney’s 方法做。在 TBI + Gly 组 Gly 在 10 的剂量静脉内地被管理; mg/kg 30 在 TBI 以后的 min。在 24 在 TBI 马达功能和大脑水内容以后的 h 被评估。同时包括像使用费的受体的 HMGB1/HMGB1 受体 4 (TLR4 ) 并且为先进 glycation 结束产品(愤怒) 的受体 /nuclear 因素 -- 在受伤大脑纸巾表明小径和煽动性的 cytokines 的 B (NF- B ) 用量的即时聚合酶链反应被检测西方的污点 electrophoretic 活动性移动试金和连接酶的 immunosorbent 试金。而且 HMGB1 愤怒和 TLR4 immunohistochemistry 和 apoptosis 是走表演缺陷和大脑浮肿的 analyzedResultsBeam 显著地在 TBI 被减少; + Gly 组与 TBI 相比组;同时, HMGB1/HMGB1 受体(TLR4 和愤怒) 的在表示上 /NF-B DNA 有约束力的活动和煽动性的 cytokines 被禁止。 HMGB1 ,愤怒和TLR4积极的房间和 apoptotic 房间的百分比是分别地58.37% ; ± ;5.06%,54.15% ; ± ;4.65%,65.50% ; ± ;4.83%,52.02% ; ± ;4.63%在 TBI 组和39.99% ; ± ;4.99%,34.87% ; ± ;5.02%,43.33% ; ± ;4.54%,37.84% ; ± ;5.16%在 TBI ;+ ; Gly 组(所有 P ;< ; 0.01 与 TBI 相比组织)能 .ConclusionGly | Gu Xiangjin Xu Jin Ma Banyou Chen Gong Gu Peiyuan Wei Dong Hu Weixing | 2014 | Chinese Journal of Traumatology2014,17,1: | 4 |
| 5 | Seasonal variations of night mesopause temperature in Beijing observed by SATI4显示文摘The data observed by a spectral airglow temperature imager (SATI) at Beijing National Observatory of Space Environment from July 23, 2008 to July 31, 2009 are used to study night mesopause temperature in Beijing. From variations of temperature at 87 and 94 km obtained from OH (6-2) and O2 (0-1) airglow spectra, temperature at night is shown lowest in the summer and highest in the winter. In summer, average temperature at 87 km is 173.9 K, lower than average temperature 180.1 K at 94 km. But in winter, average temperature at 87 km is 201.2 K, higher than average temperature 194.8 K at 94 km. The altitude of mesopause in Beijing is below 87 km in summer and above 94 km in winter. There are about 120-150 days when the mesopause locates below 87 km, which is in agreement with the results of SABER/TIMED. Variations of temperatures at 87 and 94 km are analyzed by harmonic method. Our results show that amplitudes of annual oscillation of temperature at 87 and 94 km are 17.5 and 7.8 K respectively. Amplitudes of semi-annual oscillation at 87 and 94 km are 1.6 and 5.3 K, which are smaller than those of annual oscil- lation. Although there are differences among different observations because of different locations and different instruments, our results are in general agreement with observation at similar latitude as Beijing. | XIONG JianGang WAN WeiXing NING BaiQi LIU LiBo WU BaoYuan HU LianHuan XU Tao | 2012 | Science China(Technological Sciences)2012,55,5: | 3 |
| 6 | An empirical study of the effect of venture capital participation on the accounting information quality of IPO firms显示文摘Using a sample of IPO companies on the Shenzhen Small and Median Enterprise Board and the ChiNext Stock Market between 2005 and 2009, this paper analyzes the effect of venture capital participation on accounting information quality. We find that venture capitalists have a significant effect on earnings management, with reduced discretionary accruals before the expiration of the equity lock-up period and enhanced discretionary accruals after the expiration of the equity lock-up period. Our findings support the moral hazard hypothesis of venture capital, but not the certification/monitoring role of venture capital in IPOs. In addition, we find that venture capital plays a more important role in the earnings management of non-state-owned IPO companies than of state-owned companies. | Zhiying Hu Weixing Cai Jinjin Han Rula Sa | 2012 | China Journal of Accounting Research2012,,3: | 3 |
| 7 | Power recovery method for testing the efficiency of the ECD of an integrated generation unit for offshore wind power and ocean wave energy显示文摘Offshore wind power and ocean wave energy are clean,renewable and rich resources.The integrated generation unit for the | CHEN WeiXing GAO Feng MENG XiangDun REN An Ye HU Yan | 2017 | Science China(Technological Sciences)2017,60,3: | 2 |
| 8 | Novel stabilityof cellular neural networks with interval time-varying de-lay显示文摘 | Hu Liang Gao Huijun Zheng Weixing | 2008 | Neural Network2008,21,: | 1 |
| 9 | Bone marrow stromal cell versus neural stem cell transplantation in a C6 glioma rat model显示文摘BACKGROUND: Embryonic neural stem cells (NSCs) have provided positive effects for the treatment of glioma. However, the source for embryonic NSCs remains limited and high amplification conditions are required. Bone marrow stromal cells (BMSCs) have been proposed for the treatment of glioma. OBJECTIVE: To investigate biological changes in NSCs and BMSCs following transplantation into rat models of glioma. DESIGN, TIME AND SETTING: A randomized, controlled, animal experiment was performed at the Embryonic Stem Cell Research Laboratory of Yunyang Medical College from February 2006 to August 2008. MATERIALS: The rat C6 glioma cell line was purchased from Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences; mouse anti-bromodeoxyuridine (BrdU) monoclonal antibody and Cy3-labeled goat anti-mouse IgG antibody was purchased from Upstate, USA. METHODS: A total of 95 Sprague Dawley rats were randomly assigned to three groups: NSC (n = 35), transplanted with > 6 × 106 NSCs via left medial hind limb; BMSC (n = 35), transplanted with > 1 × 106 BMSCs via left medial hind limb; model group (n = 25), injected with the same volume of 0.1 mmol/L phosphate buffered saline. MAIN OUTCOME MEASURES: Gliomal growth and size were assessed by nuclear magnetic resonance, and glioma morphological features were observed following hematoxylin-eosin staining and BrdU immunohistochemistry 3 and 4 weeks following transplantation. RESULTS: The average survival of rats in the BMSC, NSC, and model groups was 4.03, 4.28, and 3.88 weeks. At 3 weeks, there was no significant difference in the average glioma diameter between the BMSC and model groups (P > 0.05). However, gliomal diameter was significantly decreased in the NSC group compared with the model group (P < 0.05). At 4 weeks, there was no statistical difference between the groups (P > 0.05). BrdU immunohistochemistry revealed that BMSCs and NSCs appeared to migrate to the gliomas. CONCLUSION: NSCs inhibited glioma cell growth and prolonged rat survival. BMSCs did not significantly suppress glioma cell growth. | Hanjun Tu Juntao Hu Yanxia Lue Li Zhang Hui Wang Zhangming Zhou Weixing Wang | 2010 | Neural Regeneration Research2010,5,7: | 1 |
| 10 | Antidepressant- like effects of liquiritin and isoliquiritin from Gtycyrrhiza uralensis in the forced swinuning test and tail suspension test in mice显示文摘 | Weixing Wang Xinying Hu Zhiyu Zhao | 2008 | Progress in Neuro-Psychopharmacology & Biologicalp sychiatry2008,32,5: | 1 |
| 11 | MicroRNA-181a sensitizes human malignant glioma U87MG cells to radiationby targeting Bcl-2显示文摘 | Gong Chen Wei Zhu Dezhi Shi Li Lv Chun Zhang Ping Liu Weixing Hu | 2010 | Oncology Reports2010,,4: | 1 |
| 12 | A study of parameter test on fine clay soil in Beijing using the model by Duncan and Chang显示文摘 | Feng Weixing Chang Shaodong Hu Wangyi | 1999 | Chinese Janmal of Rock Mechanics and Engineering1999,18,3: | 1 |
| 13 | Dual-time-point FDG PET for the evaluation of locoregional lymph nodes in thoracic esophageal squamous cell cancer显示文摘 | Qinyong Hu Weixing Wang Xiaojun zhong Shuanghu Yuan Zheng Fu Hongbo Guo Jinming Yu | 2008 | European Journal of Radiology2008,,2: | 1 |
| 14 | Inhibitory effect of Hypoxia inducible factor-1 antisense oligonucleotide on growth of human hepatocellular carcinoma cells显示文摘 | Chen WeiXing Hu Tiantian Ni Qun Yu Chaohui Xu Ping | 2008 | Medical Oncology2008,,1: | 1 |
| 15 | Feedback Cache Mechanism for Dynamically Reconfigurable VLIW Processors显示文摘Very Long Instruction Word(VLIW) architectures are commonly used in application-specific domains due to their parallelism and low-power characteristics. Recently, parameterization of such architectures allows for runtime adaptation of the issue-width to match the inherent Instruction Level Parallelism(ILP) of an application.One implementation of such an approach is that the event of the issue-width switching dynamically triggers the reconfiguration of the data cache at runtime. In this paper, the relationship between cache resizing and issue-width is well investigated. We have observed that the requirement of the cache does not always correlate with the issuewidth of the VLIW processor. To further coordinate the cache resizing with the changing issue-width, we present a novel feedback mechanism to 'block' the low yields of cache resizing when the issue-width changes. In this manner, our feedback cache mechanism has a coordinated effort with the issue-width changes, which leads to a noticeable improvement of the cache performance. The experiments show that there is 10% energy savings as well as a 2.3% cache misses decline on average achieved, compared with the cache without the feedback mechanism.Therefore, the feedback mechanism is proven to have the capability to ensure more benefits are achieved from the dynamic and frequent reconfiguration. | Sensen Hu Weixing Ji Yizhuo Wang | 2017 | Tsinghua Science and Technology2017,22,3: | 1 |
| 16 | A land consolidation project management information system bBase on workflow 显示文摘 | Zhou Jinhao Ling Weixing Hu Yueming | 2011 | IEEE2011,,: | 1 |
| 17 | Radiofrequency thermo- coagulation-assisted surgery for intracranial giant vasogenic tumors 显示文摘 | Hu Weixing Li Lixin Shi Dezhi | 2008 | Surgical Neurology2008,70,: | 1 |
| 18 | Adaptive tracking control of leader-follower systems with unknown dynamics and partial measurements显示文摘 | HU Jiangping ZHENG Weixing | 2014 | Automatica2014,50,5: | 1 |
| 19 | An investigation on the active-power variations of wind farms显示文摘 | Lin Weixing Wen Jinyu Hu Jianglu | 2012 | IEEE Transactions on Industry Applications2012,48,3: | 1 |
| 20 | Attraction and Stability for Neutral Stochastic Functional Differential Equations显示文摘The main aim of this paper is to establish several new criteria on the attractor for the solutions of neutral stochastic func- tional differential equations. A kind of ψ-function is introduced to our discussion, and some results on the attractor for the product of the ψ-function and the solutions are obtained. As a byproduct, a number of new criteria on asymptotic stability are also shown. | CEN Liqun, DAI Weixing, HU Shigeng School of Mathematics and Statistics, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China | 2009 | Wuhan University Journal of Natural Sciences2009,14,3: | 1 |