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108篇 您的检索式:作者名="Bingyi"
    题名 作者 年代 出处 被引量
1Effects of autumn-winter Arctic sea ice on winter Siberian High显示文摘The intensity of the winter Siberian High has significantly negative correlations with Arctic sea ice concentration anomalies from the previous autumn to winter seasons in the Eastern Arctic Ocean and Siberian marginal seas. Our results indicate that autumn-winter Arctic sea ice concentration and concurrent sea surface temperature anomalies are responsible for the winter Siberian High and surface air temperature anomalies over the mid-high latitudes of Eurasia and East Asia. Numerical experiments also support this conclusion, and consistently show that the low sea ice concentration causes negative surface air temperature anomalies over the mid-high latitudes of Eurasia. A mechanism is proposed to explain the association between autumn-winter sea ice concentration and winter Siberian High. Our results also show that September sea ice concentration provides a potential precursor for winter Siberian High that cannot be predicted using only tropical sea surface temperatures. In the last two decades (1990–2009), a strengthening trend of winter Siberian High along with a decline trend in surface air temperature in the mid-high latitudes of the Asian Continent have favored the recent frequent cold winters over East Asia. The reason for these short-term trends in winter Siberian High and surface air temperature are discussed.WU BingYi SU JingZhi ZHANG RenHe 2011Chinese Science Bulletin2011,56,30:70
2Recent trends in surface sensible heat flux on the Tibetan Plateau显示文摘在最后三十年,西藏的高原处于风速度在空气温度和重要减少展出了重要增加。表面热来源怎么变化了,是在季风研究的一个重要问题。基于平淡的气象学的数据,这研究为在表面估计趋势调查方法之间的差别为时期的西藏的高原上的理智的热流动 19842006。一个人基于微气象学的理论和实验是一个物理方法,并且考虑大气的稳定性和热粗糙长度。另外的途径包括假设热转移系数是经常的值或风速度的一个简单函数的常规实验方法。后者方法在 climatologic 研究广泛地被使用。从物理方法的结果证明那年度吝啬的理智的热流动每除了在冬季,季节的平均数由 2%4% 削弱了的十年,和流动在 2% 变弱。二个通常使用的实验方法在发情流动趋势估计显示出高无常,尽管他们生产了类似的气候学。当转移系数被假定时,年度吝啬的热流动每一个固定转移系数被使用的十年在 7% 变弱,而趋势是可以忽略的风的功能速度。常规实验方法可以因此在理智的热流动误传趋势。YANG Kun GUO XiaoFeng WU BingYi 2011Science China Earth Sciences2011,54,1:21
3Arctic dipole anomaly and summer rainfall in Northeast China显示文摘A dipole structure anomaly in summer Arctic atmospheric variability is identified in this study, which is characterized by the second mode of empirical orthogonal function (EOF) analysis of summer monthly mean sea level pressure (SLP) north of 70°N, accounting for 12.94% of the variance. The dipole anom- aly shows a quasi-barotropic structure with opposite anomalous centers over the Canadian Arctic and the Beaufort Sea and between the Kara Sea and the Laptev Sea. The dipole anomaly reflects alternating variations in location of the polar vortex between the western and eastern Arctic regions. The positive phase of the dipole anomaly corresponds to the center of the polar vortex over the western Arctic, leading to an increase in summer mean rainfall in Northeast China. The dipole anomaly has a pre- dominant 6-year periodicity, and shows interdecadal variations in recent decades.WU BingYi ZHANG RenHe D'Arrigo ROSANNE 2008Chinese Science Bulletin2008,53,14:13
4Current status of pediatric kidney transplantation in China: data analysis of Chinese Scientific Registry of Kidney Transplantation显示文摘Liu Longshan Zhang Huanxi Fu Qian Chen Liping Sun Chuanhou Xiong Yunyi Shi Bingyi Wang Changxi 2014Chinese Medical Journal2014,,3:10
5Interdecadal variations of the East Asian winter surface air temperature and possible causes显示文摘Using the NCEP/NCAR and JRA-25 monthly analysis data from 1979 to 2011,this paper analyzes the interdecadal variations of winter(Dec.–Feb.)mean surface air temperature(SAT)over East Asia by means of the empirical orthogonal function(EOF)analysis method.Two dominant modes were extracted,with the leading mode basically depicting a sign consistent SAT variation and the second mode describing a meridional dipole structure between the northern and southern parts of East Asia.These two modes can explain more than 60%of the variance.The leading mode is closely related to the intensity of Siberian high and the East Asian winter monsoon.The second mode exhibits a notable interdecadal shift in the late 1990s,with a turning point around1996/1997.Winter SAT in the northern(southern)part of East Asia tends to be cooler(warmer)since the late 1990.Winter sea level pressure(SLP)differences between 1997–2011 and 1979–1996 show negative(positive)anomalies over southern(northern)Eurasia.At 500-hPa,an anomalous blocking high occurs over northern Eurasia,while a cyclone anomaly appears over northern East Asia.In addition,the upper-level East Asian jet stream tends to shift northward and become stronger after the late 1990.Indeed,the interdecadal shift of winter SAT over East Asia is dynamical consistent with changes of the large-scale atmospheric circulation in the late 1990s.The result indicates that previous autumn sea surface temperature(SST)in the North Atlantic Ocean,the Northern Indian Ocean and the western North Pacific Ocean,as well as sea ice concentration(SIC)in the northern Eurasia marginal seas and the Beaufort Sea also experienced obvious changes in the late 1990s.In particular,the interdecadal shifts of both SST in the North Atlantic Ocean and SIC in the Arctic Ocean and its marginal seas are well coherent with that of the winter SAT over East Asia.The results indicate that the interdecadal shift of East Asian winter SAT may be related to changes in the North Atlantic SST and the Arctic SIC in the late 1990s.YANG LiuNi WU BingYi 2013Chinese Science Bulletin2013,58,32:9
6Interdecadal shift in the western North Pacific Summer SST anomaly in the late 1980s显示文摘An interdecadal shift in summer (June―August) sea surface temperature (SST) variations during the period of 1968―2002 was identified in the late 1980s, which is characterized by a phase alternating from negative to positive phases of the leading mode of the empirical orthogonal function (EOF) analysis of the summer monthly mean SST in the Pacific domain 100°―180°E and 0°―40°N, accounting for 30.5% of the total variance. During the period of 1968―1987, the leading mode with a mean negative phase state (mean standard deviation = ?0.586) controlled SST variability in the western North Pacific. Correspondingly, negative SST anomalies occupied the western North Pacific south of Japan and Chinese marginal seas. During the period of 1988―2002, the leading mode shifted to its strong positive polarity (mean standard deviation = 0.781), thus positive SST anomalies appeared in the western North Pacific. Accompanied by the interdecadal shift in summer mean SST, summer mean rainfall increased in southern and southeastern China during the late period, particularly in southeastern China where increase in summer mean rainfall exceeded 40 mm, at the 0.05 significance level.WU BingYi ZHANG RenHe 2007Chinese Science Bulletin2007,52,18:9
7Free vibration analysis of a pre-twisted sandwich blade with thermal barrier coatings layers显示文摘A rotating cantilever sandwich-plate model with a pre-twisted and pre-set angle has been developed to investigate the vibrational behavior of an aero-engine turbine blade with thermal barrier coating(TBC) layers. The classic von Karman plate theory and the first-order shear deformation theory are applied to derive the energy equations of the rotating TBC blade, in which the geometric shapes, the work ambient temperature, and the TBC material properties are considered. The Chebyshev-Ritz method is used to obtain the nature frequency of the rotating TBC blade. For static frequency and modal analysis, the finite-element method(FEM)is also applied to compare and validate the results from the Chebyshev-Ritz method. A good agreement is found among these kinds of methods. For dynamic frequency, the results are analyzed in detail concerning the influence of system parameters such as the thickness of the TBC layer, the working temperature, and the pre-twisted and pre-set angle. Finally, the Campbell diagram is demonstrated to analyze the resonance property of the cantilever sandwich TBC blade model.CAO DongXing LIU BingYi YAO MingHui ZHANG Wei 2017Science China(Technological Sciences)2017,60,11:7
8Tolerogenic dendritic cells and their applications in transplantation显示文摘在移植免疫学,最终的目标总是到成功地并且明确地导致 allografts 的有免疫力的忍耐。当他们在导致并且维持有免疫力的忍耐起重要作用,有 immunoregulatory 功能的 Tolerogenic 树枝状的房间(tol-DCs ) 吸引了许多注意。这里,我们集中了于 tol-DCs 有潜力在稳固器官的移植以后支持有免疫力的忍耐。我们集中于他们有另外的规章的房间的发展和相互作用,并且我们也探索设计协议的各种各样的 tol-DC。利用 tol-DCs 为支持长期的接枝代表有希望的细胞的治疗功能的幸存在移植以后将很可能被完成的接受者。Haibin Li Bingyi Shi 2015Cellular & Molecular Immunology2015,12,1:6
9Inter-decadal variations of springtime rainfall over southern China mainland for 1979-2004 and its relationship with Eurasian snow显示文摘This study analyzes the inter-decadal variations of rainfall over southern China in spring (March-April-May) using the observed precipitation data for 1979-2004. The result shows that the variations of spring rainfall over southeastern China are opposite to those over and southwestern China in both inter-annual and inter-decadal time scales. The precipitation over south- ern China exhibits an apparent inter-decadal shift in the late 1980s. The accumulated spring rainfall has reduced 30% over southeastern China after the late 1980s, whereas it has increased twice as much over southwestern China. The atmospheric circulations related to this shift show that an abnormal high at lower and middle troposphere appears over Asian middle and high latitudes, accompanied by stronger-than-normal northerly wind over eastern China. Consequently, the wet air flows from tropical oceans are weakened over southern China, resulting in less rainfall over southeastern China and more rainfall over southwestern China. Furthermore, the anomalous atmospheric circulation over Asian middle and high latitudes is closely related to the inter-decadal downward shift of Eurasian spring snow in the late 1980s, indicating that the inter-decadal shift of Eurasian spring snow in the late 1980s is probably an important factor in the decadal shift of spring rainfall over southern China.ZUO ZhiYan ZHANG RenHe WU BingYi 2012Science China Earth Sciences2012,55,2:5
10Response of the East Asian climate system to water and heat changes of global frozen soil using NCAR CAM model显示文摘在陆地空气热和水保存的条件下面,一套敏感数字实验被设置调查东方亚洲气候系统的反应到全球冻结的土壤变化。这被介绍 supercooled 土壤水过程进社区陆地模型(CLM3.0 ) 做,它被联合了到大气的研究社区空气模型(CAM3.1 ) 的国家中心。结果显示出那:(1 ) 在在 CLM3.0 的土壤冰和土壤水之间的比率被 supercooled 土壤水过程清楚地改变。地面表面温度和土壤温度也被影响。(2 ) 欧亚(包括的东方亚洲人) 气候系统在冻结的土壤区域对热和水的变化敏感。在 1 月,阿留申群岛之土人低海水平压力发行量被加强,在 500 hPa 高堵住的乌拉尔变弱,并且东方亚洲马槽变弱。在 7 月,在阿留申群岛之土人岛区域上的海水平压力显著地被减少;在东方亚洲海洋上有在东方亚洲大陆,和积极异例上的 500 hPa geopotential 高度的否定异例。(3 ) 在 1 月,在东亚上的 850 hPa 风地的南方的部件增加,显示削弱的冬季季风。在 7 月,当在海洋上有逆旋风的异例时,气旋的异例出现在东方亚洲大陆上,加强的东方海岸夏天季风反射。(4 ) 在东亚的夏天降雨显著地变化了,包括南部的 Qinghai 西藏高原,中央长江盆,和东北中国上的实质的降水增加。夏天降雨显著地在华南和海南岛减少了,但是稍微减少了在中央并且北方中国。进一步的分析沿着 30 显示出可观的上面的空气运动吗??XIN YuFei WU BingYi BIAN LinGen LIU Ge ZHANG Lin LI Ren 2012Chinese Science Bulletin2012,57,34:5
11Arctic sea ice bordering on the North Atlantic and inter-annual climate variations显示文摘Variations of winter Arctic sea ice bordering on the North Atlantic are closely related to climate variations in the same region. When winter North Atlantic Oscillation (NAO) index is positive (negative) anomaly phase, Icelandic Low is obviously deepened and shifts northwards (southwards). Simultaneously, the Subtropical High over the North Atlantic is also intensified, and moves northwards (southwards). Those anomalies strengthen (weaken) westerly between Icelandic Low and the Subtropical High, and further result in positive (negative) sea surface temperature (SST) anomalies in the mid-latitude of the North Atlantic, and increase (decrease) the warm water transportation from the mid-latitude to the Barents Sea, which causes positive (negative) mixed-layer water temperature anomalies in the south part of the Barents Sea. Moreover, the distribution of anomaly air temperature clearly demonstrates warming (cooling) in northern Europe and the subarctic regions (including the Barents Sea) and coolingBingyi Wu Ronghui Huang Dengyi Gao 2001Chinese Science Bulletin2001,46,2:4
12The zonal propagating characteristics of low-frequency oscillation over the Eurasian mid-high latitude in boreal summer显示文摘Using 32-yr National Centers for Environment Prediction-National Center for Atmospheric Research(NCEP-NCAR) reanalysis data,we investigated zonal propagation and circulation characteristics of the low-frequency circulation for the prevailing period over Eurasian mid-high latitude in boreal summer(May-August) in terms of empirical orthogonal function(EOF),linear regression,and phase analysis and so on.We found that the dominant periods of the low-frequency circulation are 10-30 days and it clearly shows meridional(southward) and zonal(westward) propagation features at the middle troposphere(500 hPa).The average zonal speed of the 10-30 days low-frequency oscillation(LFO) is about 9-10 longitudes per day.Further analysis shows that the southernmost part of the polar vortex in the northern hemisphere exhibits westward clockwise rotation in the eastern hemisphere in boreal summer.Also,the southernmost tips of 5400 and 5500 gpm contours,which indicate the site of the major trough in the eastern hemisphere,obviously move westwards.The southernmost tip of 5500 gpm contour line propagates westwards at the speed of about 9-10 longitudes per day,which is consistent with the mean zonal speed of the westward propagation of the low-frequency circulation.Moreover,the 10-30-day LFO-related cold air also shows west propagation feature with respect to LFO phases.The westward propagation of the LFO is the low-frequency-scale embodiment of the clockwise rotation of polar vortex.The cold air activities closely related to polar vortex or to ridge-trough system activities is the essential circulation of 10-30 days LFO circulation over the Eurasian mid-high latitude in boreal summer.YANG ShuangYan WU BingYi ZHANG RenHe ZHOU ShunWu 2013Science China Earth Sciences2013,56,9:4
13Arctic Climate Changes Based on Historical Simulations(1900-2013) with the CAMS-CSM显示文摘The Chinese Academy of Meteorological Sciences Climate System Model(CAMS-CSM) is a newly developed global climate model that will participate in the Coupled Model Intercomparison Project phase 6. Based on historical simulations(1900-2013), we evaluate the model performance in simulating the observed characteristics of the Arctic climate system, which includes air temperature, precipitation, the Arctic Oscillation(AO), ocean temperature/salinity,the Atlantic meridional overturning circulation(AMOC), snow cover, and sea ice. The model-data comparisons indicate that the CAMS-CSM reproduces spatial patterns of climatological mean air temperature over the Arctic(60°-90°N) and a rapid warming trend from 1979 to 2013. However, the warming trend is overestimated south of the Arctic Circle, implying a subdued Arctic amplification. The distribution of climatological precipitation in the Arctic is broadly captured in the model, whereas it shows limited skills in depicting the overall increasing trend. The AO can be reproduced by the CAMS-CSM in terms of reasonable patterns and variability. Regarding the ocean simulation, the model underestimates the AMOC and zonally averaged ocean temperatures and salinity above a depth of 500 m, and it fails to reproduce the observed increasing trend in the upper ocean heat content in the Arctic. The largescale distribution of the snow cover extent(SCE) in the Northern Hemisphere and the overall decreasing trend in the spring SCE are captured by the CAMS-CSM, while the biased magnitudes exist. Due to the underestimation of the AMOC and the poor quantification of air–sea interaction, the CAMS-CSM overestimates regional sea ice and underestimates the observed decreasing trend in Arctic sea–ice area in September. Overall, the CAMS-CSM reproduces a climatological distribution of the Arctic climate system and general trends from 1979 to 2013 compared with the observations, but it shows limited skills in modeling local trends and interannual variability.Ting WEI Jian LI Xinyao RONG Wenjie DONG Bingyi WU Minghu DING 2018Journal of Meteorological Research2018,32,6:4
14Lag influences of winter circulation conditions in the tropical western Pacific on South Asian summer monsoon显示文摘By means of monthly mean NCEP/NCAR data analyses, this note investigates the lag influences of winter circulation conditions in the tropical western Pacific on South Asian summer monsoon through the methods of composite, correlation and statistical confident test. The results indicate clearly that winter climate variations in the equatorial western Pacific would produce significant influences on the following South Asian summer monsoon, and with the lapse of time the lag influences show clearly moving northward and extending westward features. When winter positive (negative) sea level pressure anomalies occupy the equatorial western Pacific, there is an anticyclonic (cyclonic) circulation anomaly appearing in the northwestern Pacific. With the lapse of time, the anticyclonic (cyclonic) circulation anomaly gradually moves to northeast, and its axis in the west-east directions also stretches, therefore, easterly (westerly) anomalies in the south part of the anticyclonic (cyclonic) circulation anomalyBingyi Wu Ronghui Huang 2001Chinese Science Bulletin2001,46,10:3
15Fractional beamforming of dense spacing array for time-frequency mix显示文摘The model of time-frequency mixed processing and the towing experimental results airs discussed in the paper for the fractional beamforming of a dense spacing array. The results show that the theoretical model is in agreement with the experimental results and it can.be realized easily in the engineering mode. The Performance Figure of the experimental subarray system is increased about 17 dB in comparison with that of traditional array with halfwavelength spacing between elements under the same conditions, when the flow noise is a dominant component in the background noise received by a sub-array.SHAN Bingyi ZHENG Guolun ZOU Tengrong (State Key Laboratory of Ocean Acoustics, Hangzhou Applied Acoustics Institute Hangzhou 310012) 2000Chinese Journal of Acoustics2000,19,2:3
16Adhesive anastomosis for organ transplantation显示文摘The recent development of tough tissue adhesives has stimulated intense interests among material scientists and medical doctors.However,these adhesives have seldom been tested in clinically demanding surgeries.Here we demonstrate adhesive anastomosis in organ transplantation.Anastomosis is commonly conducted by dense sutures and takes a long time,during which all the vessels are occluded.Prolonged occlusion may damage organs and even cause death.We formulate a tough,biocompatible,bioabsorbable adhesive that can sustain tissue tension and pressurized flow.We expose the endothelial surface of vessels onto a gasket,press two endothelial surfaces to the adhesive using a pair of magnetic rings,and reopen the bloodstream immediately.The time for adhesive anastomosis is shortened compared to the time for sutured anastomosis.We have achieved adhesive anastomosis of a great vein in transplanting the liver of a pig.After the surgery,the adhesive is absorbed,the vein heals,and the pig lives for over one month.Kang Liu Hang Yang Gaobo Huang Aihua Shi Qiang Lu Shanpei Wang Wei Qiao Haohua Wang Mengyun Ke Hongfan Ding Tao Li Yanchao Zhang Jiawei Yu Bingyi Ren Rongfeng Wang Kailing Wang Hui Feng Zhigang Suo Jingda Tang Yi Lv 2022Bioactive Materials2022,7,7:3
17ANALYTICAL VARIATIONAL METHOD OF SOLUTION FOR STRESS CONCENTRATION FACTORS OF FINITE PLATES WITH A PIN HOLE显示文摘ANALYTICALVARIATIONALMETHODOFSOLUTIONFORSTRESSCONCENTRATIONFACTORSOFFINITEPLATESWITHAPINHOLEXiYuanshan;ZhangXing(Departmentof...Xi Yuanshan Zhang Xing(Department of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing, Cina, 100083)Ren Bingyi Luo Anmin(Chendu Aircraft Industrial Corporation, Chendu, China, 610041) 1996Chinese Journal of Aeronautics1996,9,1:2
18Beamforming of random line array显示文摘In order to solve the problem of the sensor location uncertaintyfor a towed line array,the sample matrix of the signal and time-spacecurve equations of the simulated array shape are presented in this paper.Average beampatterns of randomized processing are given too.The quan-titative results of array shape variation and distortion losses are obtainedfrom the comparison between the computer simulation and the experimen-tal results.In addition,a model for estimating array shape is offered.Anexperiment on dynamical beamforming is carried out.The results showthat SNR improvement of about 4dB may be obtained by dynamic com-pensation for a small array when the distortion is medial and the towspeed is low.SHAN Bingyi(Hangzhou Applied Acoustics Institute Hangzhou 311400) 1992Chinese Journal of Acoustics1992,11,2:2
19Self-normalized moderate deviations for independent random variables显示文摘Let X1,X2,...be a sequence of independent random variables(r.v.s) belonging to the domain of attraction of a normal or stable law.In this paper,we study moderate deviations for the self-normalized sum ∑ni=1 Xi/Vn,p,where Vn,p =(∑ni=1 |Xi|p)1/p(p>1).Applications to the self-normalized law of the iterated logarithm,Studentized increments of partial sums,t-statistic,and weighted sum of independent and identically distributed(i.i.d.) r.v.s are considered.JING BingYi LIANG HanYing ZHOU Wang 2012Science China Mathematics2012,55,11:2
20Plasma thrombomodulin changes in acute cerebral infarction or hypertension patients An observation for verification显示文摘BACKGROUND: Thrombomodulin concentration greatly increases in plasma when vascular endothelial cells are injured, and it is one of the specific molecular markers for endothelial injury. OBJECTIVE: To analyze the plasma levels of thrombomodulin after cerebral infarction or hypertension, and to compare levels with those from healthy control subjects. DESIGN: A case-controlled observation. SETTING: Yuquan Hospital of Tsinghua University. PARTICIPANTS: Patients with hypertension (n = 37) and acute cerebral infarction (n = 26) were selected from the outpatient and inpatient Department of Neurology, Yuquan Hospital of Tsinghua University from February 2003 to February 2006. The cerebral infarction group consisted of 24 males and 2 females, 36-77 years of age, with a mean age of 62 years. All patients fulfilled the diagnosis criteria for cerebral infarction, according to the diagnostic standards revised by the Second National Academic Meeting for Cerebrovascular Disease, and were confirmed by CT or MRI. The hypertension group consisted of 27 males and 10 females, 36-77 years of age, with a mean age of 56 years. These patients fulfilled the diagnostic criteria for hypertension set by WHO. In addition, 43 healthy physical examinees were selected as the control group, consisting of 23 males and 20 females, 35-67 years of age. Informed consent was obtained from all participants. METHODS: In the cerebral infarction group, thrombomodulin plasma levels were determined by enzyme-linked immunoabsorbent assay at days 1, 3, 7, and 14 after attack. Thrombomodulin plasma levels were determined only once in the hypertension group and the control group. The results from the cerebral infarction group were compared with those from the hypertension group and the control group. MAIN OUTCOME MEASURES: Level of thrombomodulin in plasma. RESULTS: All 63 patients and 43 healthy volunteers were included in the final analysis of results. ① At 7 days after the attack, the plasma levels of thrombomodulin in the cerebral infarction and the hypertension groups were significantly higher than in the control group (P < 0.01). ② The plasma level of thrombomodulin was detected at four time points after cerebral infarction. It reached peak values on day 7, and it was lowest on day 14. CONCLUSION: The changes of thrombomodulin plasma levels could be used to monitor the severity of vascular endothelial cell injury in acute cerebral infarction.Pu Feng Hui Zhang Bingyi Yang Yonggang Zheng Jinhui Xie Ying Wang Jinchuan Li 2008Neural Regeneration Research2008,3,1:2
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