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| 1 | An efficient rendering method for large vector data on large terrain models显示文摘This paper presents an efficient way to render large-scale vector maps on level-of-detail(LOD) digital elevation models(DEMs).By using the frame buffer and Voronoi diagram,we achieve a rapid simplification of large-scale vector maps while keeping their original topological relationships.With the simplified maps,we establish level-of-detail vector map models.In the detailed level,we use the stencil shadow volume approach to render the map accurately,and in the coarse level we use substitute techniques to render the map approximately yet more quickly.The method proposed in this paper is universally applicable to rendering vector maps on various LOD terrain models,and the overlaying performance is independent of the complexity of underlying terrain surfaces.By use of the view frustum culling and sub-region index techniques,the impact of complexity of vector maps is reduced,and the rendering time is restricted to a certain scope.Thereby,we can achieve seamless and rapid rendering of large-scale vector maps on LOD terrain surfaces. | YANG Ling ZHANG LiQiang KANG ZhiZhong XIAO ZhiQiang PENG JunHuan ZHANG XingMing LIU Liu | 2010 | Science China(Information Sciences)2010，53，6： | 11 |
| 2 | Electroacupuncture Pretreatment at Neiguan (PC 6) attenuates autophagy in rats with myocardial ischemia reperfusion through the phosphatidylinositol 3-kinase-Akt-mammalian target of rapamycin pathway显示文摘OBJECTIVE: To investigate the protective efficacy of electroacupuncture(EA) pretreatment at Neiguan(PC6) on myocardial ischemia-reperfusion(I/R) in rats.METHODS: Fifty rats were randomly divided into five groups(n = 10): sham operation group, model group(underwent in vivo myocardial I/R), EA pretreatment group [EA at Neiguan(PC 6) 1 week before I/R], wortmannin group(1 week before I/R, the PI3K inhibitor, wortmannin, was injected), EA pretreatment + wortmannin group(both pretreatments were performed simultaneously). After establishing the I/R model, 2,3,5-triphenyltetrazolium chloride(TTC) staining was used to analyze the weight and area of the myocardial infarction tissue.The biosignal and pressure test system was used to determine the left ventricular systolic mean pressure(LVSP), left ventricular end-diastolic pressure(LVEDP), fractional shortening(FS), and ejection fraction(EF). Ultraviolet spectrophotometry was used to determine the expression of creatine kinase(CK)-MB, inducible nitric oxide synthase(i NOS), and total antioxidant capacity(T-AOC) in the serum. The expression of autophagy-related protein 13(ATG13), mammalian target of rapamycin(m TOR), and phosphatidylinositol 3-kinase(PI3K) in cardiac muscle cells was determined by immunofluorescence. Hematoxylin and eosin staining was used to observe autophagy-related pathological changes in rat cardiomyocytes, and ultrastructural changes of cardiomyocytes were examined by transmission electron microscopy.RESULTS: In this study, the infarction size and tissue weight of the EA pretreatment group were decreased compared with the model group(P <0.0001). Furthermore, compared with the model group, the LVEDP values of the EA pretreatment group were significantly reduced(P = 0.0091), and the LVSP, FS, and EF values were slightly increased (P = 0.0007, 0.0020, 0.0031). EA pretreatment also significantly decreased the expression of CK-MB and i NOS, while it increased the expression of T-AOC in the serum of rats with I/R injury(P <0.0001). Furthermore, EA pretreatment slightly widened the myocardial fiber space, reduced necrosis and myocardial cell swelling and maintained the nucleus and mitochondria structure intact.CONCLUSION: EA pretreatment promoted autophagy flux and alleviated myocardial I/R injury through the PI3K-Akt-m TOR pathway. | HAN Yongli CHEN Song PENG Xingming | 2021 | Journal of Traditional Chinese Medicine2021，41，3： | 6 |
| 3 | Experimental investigation on correlation of corona-induced vibration and audible noise from DC conductor显示文摘In this study,the corona-induced vibration and audible noise(AN)on stranded conductor from positive and negative corona discharges were measured and analysed.The experiments were conducted in a semi-anechoic chamber to reduce the inferences from environment.For the measurement of vibration,the conductor was kept in dry condition without water drops on the conductor,which is different from previous investigations and can reveal the contributions of corona-generated space charges on the corona-induced vibration.Besides,the measurement of vibration on the conductor was performed by using a laser vibrometer which was a non-contact measurement device for measuring the vibration velocity.Furthermore,waveforms of corona-induced vibration and AN were measured simultaneously to analyse the correlation between them.The time and frequency domains characteristics of the vibration velocity and AN from negative and positive corona discharge are carefully analysed and no correlated relationship in time and frequency domains can be found in the two corona effects.It can be concluded that disturbance of air molecules caused by the vibration of conductor does not contribute the corona-generated AN. | Xuebao Li Xiang Cui Tiebing Lu Donglai Wang Renhua Peng Xingming Bian | 2016 | High Voltage2016，1，3： | 3 |
| 4 | The role of varied metal protrusions on the conductor surfaces in corona discharge subjected to DC high voltages显示文摘Conductor corona performance is significant in the evaluation of electromagnetic environment for high voltage power transmission lines. The influence of artificial contaminated conductors on corona discharge was studied and turned out to be complicated. The ionized field strength on the corona cage was measured by field mill. Meanwhile, photos of corona plumes were photographed and grayed to quantitate the corona discharge intensity. Subsequently, a calculation model for equivalent electric field strength coefficient was established to evaluate the discharge intensity of conductors in coaxial cylindrical electrode. It could be found the computational results achieved an agreement with the observed experimental phenomena. By means of simulation results, a reasonable explanation was given to the finding that the closer the distance between the two protrusions was, the lower the corona discharge intensity and higher corona inception voltage of the conductors would be. In summary, the distributions of corona sources played an important role in the corona discharge and this work would provide an important reference for the evaluation of corona effects on the surface of contaminated conductors. | XU JiaYu XU Peng ZHANG Qian CUI Xiang BIAN XingMing LU TieBing LI HaiBing | 2018 | Science China(Technological Sciences)2018，61，8： | 2 |
| 5 | Advances in Antimicrobial Peptides and Expression Strategy显示文摘Antimicrobial peptides are widely distributed in nature,existing in organisms of plants,insects,and vertebrates.It has been approved that antimicrobial peptides have broad spectrum antimicrobial activities,and play a key modulatory role in the innate immune response and tumor inhibiting activity.Due to the special action mechanism,the antimicrobial peptides become a hot field of genetic engineering.In the present paper,the general properties,mechanism of action,application value,existing problems,the latest progress and the expression strategy were discussed. | SUN Yan WANG Yunfeng CHEN Hongyan SHI Xingming WANG Mei HUANG Tingting SUN Peng YANG Guihua | 2011 | Journal of Northeast Agricultural University(English Edition)2011，18，1： | 2 |
| 6 | ADMETNet:The knowledge base of pharmacokinetics and toxicology network显示文摘A good drug or drug candidate should not only interact with its target molecule effectively and specifically,but also be absorbed into the body,distributed to the right location,metabolized into right compounds,and eliminated out of the body in proper manner.The processes of drug getting into and out of the body involve Absorption,Distribution,Metabolism,and Excretion(ADME),which | Quan Xu Ke Liu Xingming Lin Yangmei Qin Linshan Chen Jiao Cheng Mindong Zhong Qiushun He Yinbo Li Tingwu Wang Jianbo Pan Menglu Peng Lixia Yao Zhiliang Ji | 2017 | Journal of Genetics and Genomics2017，44，5： | 2 |
| 7 | A Recessive Mutant of argonaute 1b/gsnl4 Leads to Narrow Leaf, Small Grain Size and Low Seed Setting in Rice显示文摘A gsnl4 mutant characterized by small grain size,narrow leaf and low seed-setting rate was obtained by ethyl methane sulfonate(EMS)mutagenesis of a japonica rice variety Wuyunjing 21.Genetic analysis showed that gsnl4 is a loss-of-function mutant.A single-base mutation in gsnl4 resulted in the substitution of Ser to Asn in the Piwi domain of OsAGOlb protein.CRISPR/Cas9-mediated editing of OsAGOlb yielded a mutant phenotypically resembling gsnl4.Furthermore,miRNA-Seq analysis showed that the transcript expression levels of miRNAs in the signal transduction pathways related to pollen development,leaf morphology and honnone activation were significantly different between the gsnl4 mutant and the wild type(WT)plants.Several miRNAs were downregulated,and their target genes were upregulated in gsnl4 mutants.The auxin content in the root tips of the gsnl4 mutant decreased,and the expression of most auxin-related genes was altered.In summary,GSNL4 not only regulates organ development by controlling cell division and expansion,but also plays an important role in regulating auxin transport in rice. | SONG Mengqiu RUAN Shuang PENG Youlin WANG Zhongwei Jahan NOUSHIN ZHANG Yu CUI Yongtao HU Haitao JIANG Hongzhen DING Shilin SHEN Lan GAO Zhenyu HU Xingming QIAN Qian GUO Longbiao | 2021 | Rice science2021，28，6： | 0 |
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