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| 1 | Evolution mechanisms of the intraseasonal oscillation associated with the Yangtze River Basin flood in 1998显示文摘With 1998 NCEP reanalysis data and the linear diagnostic equation for local me- ridional circulation, four main processes and the boundary effects with relatively large contribu- tions to the intraseasonal oscillation of the vertical branches of the East Asian meridional circula- tion are quantitatively identified among all the processes involved in the quasi-primitive equations used in the derivation of the linear diagnostic equation. The numerical results show that the main processes with maximal contributions in the lower latitudes include the latent heating and vertical transports of sensible heat. These processes are mainly associated with the tropical convective activities and result in the low-frequency cyclones in the lower latitudes. The main processes with maximal contributions in the higher latitudes are the horizontal transports of westerly momentum and horizontal temperature advections. These processes are mainly associated with the fluctua- tions in the westerlies and result in the low-frequency cyclones in the higher latitudes. The low-frequency cyclones propagating away from lower latitudes not only interact with those from higher latitudes to enhance the lifting of the moist air in the Yangtze River Basin (YRB), but also leave room for the development of the low-frequency anticyclones over the South China Sea (SCS). The southwesterly in the northwestern quadrant of the SCS anticyclones provides the YRB with abundant moisture. This favorable moisture condition along with the enhanced rising motion in the YRB leads to the extraordinary flood in 1998. | CHEN Guixing LI Weibiao YUAN Zhuojian WEN Zhiping | 2005 | Science China Earth Sciences2005，48，7： | 13 |
| 2 | High-frequency atmospheric variability over South China Sea as depicted by TRMM and QuikSCAT显示文摘By using the TRMM and QuikSCAT datathe characteristics of the 2–8 day high frequency atmospheric variability over the South China Sea are studied in this paper.It’s found that: (1) the 2–8 day high frequency signals are significant not only during the periods of the South China Sea Summer Monsoon (SCSSM),but also after the retreat of the SCSSM.It reaches its peak around July to August;(2) the 2–8 day high frequency signals exhibit strong intermittent features;(3) During El Nino years,the 2–8 day high frequency signals are active only in the periods of the SCSSM.During La Nina years,the 2–8 day high frequency signals are obviously not only in periods of the SCSSM,but also after the retreat of the SCSSM.During the SCSSM periods,the 2–8 day high frequency signals in El Nino years are much stronger than that in La Nina years;(4) During spring to early summer,most of 2–8 day signals propagate southward and eastward,during midsummer to autumn,however,most of 2–8-day signals propagate northward and westward;(5) The 2–8 day northward and westward propagation signals is probably related to the activities of high-frequency vortex over the SCS. | LI Weibiao WANG Dong xiao LEI Ting LIU Zijie LU0 Cong | 2011 | Acta Oceanologica Sinica2011，30，2： | 6 |
| 3 | TGR5 expression in benign, preneoplastic and neoplastic lesions of Barrett's esophagus: Case series and findings显示文摘AIM To examined the bile acid receptor TGR5 expression in squamous mucosa, Barrett's mucosa, dysplasia and esophageal adenocarcinoma(EA). METHODS Slides were stained with TGR5 antibody. The staining intensity was scored as 1+, 2+ and 3+. The extent of staining(percentage of cells staining) was scored as follows: 1+, 1%-10%, 2+, 11%-50%, 3+, 51%-100%. A combined score of intensity and extent was calculated and categorized as negative, weak, moderate and strong staining. TGR5 m RNA was measured by real time PCR.RESULTS We found that levels of TGR5 mR NA were significantly increased in Barrett's dysplastic cell line CP-D and EA cell line SK-GT-4, when compared with Barrett's cell line CP-A. Moderate to strong TGR5 staining was significantly higher in high-grade dysplasia and EA cases than in Barrett's esophagus(BE) or in low-grade dysplasia. Moderate to strong staining was slightly higher in low-grade dysplasia than in BE mucosa, but there is no statistical significance. TGR5 staining had no significant difference between high-grade dysplasia and EA. In addition, TGR5 staining intensity was not associated with the clinical stage, the pathological stage and the status of lymph node metastasis.CONCLUSION We conclude that TGR5 immunostaining was much stronger in high-grade dysplasia and EA than in BE mucosa or low-grade dysplasia and that its staining intensity was not associated with the clinical stage, the pathological stage and the status of lymph node metastasis. TGR5 might be a potential marker for the progression from BE to high-grade dysplasia and EA. | Shivali Marketkar Dan Li Dongfang Yang Weibiao Cao | 2017 | World Journal of Gastroenterology2017，23，8： | 4 |
| 4 | Northward Shift in Landfall Locations of Tropical Cyclones over the Western North Pacific during the Last Four Decades显示文摘This study analyzes landfall locations of tropical cyclones(TCs)over the western North Pacific during 1979–2018.Results demonstrate that the landfall locations of TCs over this region have shifted northward during the last four decades,primarily due to the shift of landfalling TC tracks,with the decreasing/increasing proportion of westward/northward TC tracks.In particular,the northward shift of the landfalling TCs was not related to their formation locations,which have not markedly changed,whereas'no-landed'TCs have significantly shifted northward.TC movement was significantly and positively correlated to the zonal component of the steering flow,while the correlation between TC movement and the meridional component of the steering flow was relatively unobvious.The westward steering flow in the tropical central Pacific that occurred around the formation and early development of the westward TCs was significantly weakened,which was unfavorable for their westward movement,thereby,causing the higher proportions of northward moving tracks.This weakened westward flow was related to the northward shift of the subtropical high ridge,which was caused by significant weakening of the southern part of the subtropical high.The vertical wind shear,sea surface temperature,and convective available potential energy also showed that the northern region of the western North Pacific became more favorable for TC development,whereas the upper divergence,low-layer relative vorticity,and accumulated water vapor content were not obviously related to the northward shift of TCs. | Ting CHEN Shumin CHEN Mingsen ZHOU Chaoyong TU Aoqi ZHANG Yilun CHEN Weibiao LI | 2022 | Advances in Atmospheric Sciences2022，39，2： | 3 |
| 5 | A comparison of summer precipitation structures over the South China Sea and the East China Sea based on tropical rainfall measurement mission显示文摘The three-dimensional structures of summer precipitation over the South China Sea(SCS)and the East China Sea(ECS)are investigated based on tropical rainfall measurement mission(TRMM).The primary results are as follows.First,both the convective and stratiform precipitation rates in the SCS are much higher than those of the ECS.The contribution of the convective cloud precipitation to the surface precipitation is primarily over the SCS and the ECS with a proportion of about 70%,but the contribution of convective cloud precipitation is slightly larger in the SCS than the ECS.The contribution of stratus precipitation is slightly larger in the ECS than that in the SCS.Second,the content of cloud particles and precipitation particles in the ECS in June was greater than that in the SCS,while in July and August,the content of cloud and precipitation particles in the ECS was less than that in the SCS.Third,the latent heat profile of the ECS is quite different from that of the SCS.In June,the peak values of evaporation and condensation latent heating rates in the ECS are greater than those in the SCS.In July and August,however,the peak values of evaporation and condensation latent heating rates in the ECS are about 0.05/h less than those in the SCS. | LI Jiangnan YANG Chaofeng LI Fangzhou HE Qihua LI Weibiao | 2013 | Acta Oceanologica Sinica2013，32，11： | 3 |
| 6 | Identification and Analysis of High-Frequency Oscillations in the Eyewalls of Tropical Cyclones显示文摘High-frequency oscillations, with periods of about 2 hours, are first identified by applying wavelet analysis to observed minutely wind speeds around the eye and eyewall of tropical cyclones(TCs). Analysis of a model simulation of Typhoon Hagupit(2008) shows that the oscillations also occur in the TC intensity, vertical motion, convergence activity and air density around the eyewall. Sequences of oscillations in these variables follow a certain order. | CHEN Shumin Youyu LU LI Weibiao WEN Zhiping | 2015 | Advances in Atmospheric Sciences2015，32，5： | 2 |
| 7 | Atmospheric Response to Mesoscale Ocean Eddies over the South China Sea显示文摘The South China Sea(SCS) is an eddy-active area. Composite analyses based on 438 mesoscale ocean eddies during 2000–2012 revealed the status of the atmospheric boundary layer is influenced remarkably by such eddies. The results showed cold-core cyclonic(warm-core anticyclonic) eddies tend to cool(warm) the overlying atmosphere and cause surface winds to decelerate(accelerate). More than 5% of the total variance of turbulent heat fluxes, surface wind speed and evaporation rate are induced by mesoscale eddies. Furthermore, mesoscale eddies locally affect the columnar water vapor, cloud liquid water, and rain rate. Dynamical analyses indicated that both variations of atmospheric boundary layer stability and sea level pressure are responsible for atmospheric anomalies over mesoscale eddies. To reveal further details about the mechanisms of atmospheric responses to mesoscale eddies, atmospheric manifestations over a pair of cold and warm eddies in the southwestern SCS were simulated. Eddy-induced heat flux anomalies lead to changes in atmospheric stability. Thus, anomalous turbulence kinetic energy and friction velocity arise over the eddy dipole, which reduce(enhance) the vertical momentum transport over the cold(warm) eddy, resulting in the decrease(increase) of sea surface wind. Diagnoses of the model's momentum balance suggested that wind speed anomalies directly over the eddy dipole are dominated by vertical mixing terms within the atmospheric boundary layer, while wind anomalies on the edges of eddies are produced by atmospheric pressure gradient forces and atmospheric horizontal advection terms. | Haoya LIU Weibiao LI Shumin CHEN Rong FANG Zhuo LI | 2018 | Advances in Atmospheric Sciences2018，35，9： | 2 |
| 8 | HCl-induced and ATP-dependent upregulation of TRPV1 receptor expression and cytokine production by human esophageal epithelial cells显示文摘 | Jie Ma Annamaria Altomare Michele Guarino Michele Cicala Florian Rieder Claudio Fiocchi Dan Li Weibiao Cao Jose Behar Piero Biancani Karen M. Harnett | 2012 | AJP: Gastrointestinal and Liver Physiology2012，，5： | 2 |
| 9 | Diagnosis of the ENSO modulation of tropical cyclogenesis over the southern South China Sea using a genesis potential index显示文摘The modulation of tropical cyclogenesis over the southern South China Sea (SSCS) by the El Nin o- Southern Oscillation (ENSO) is examined in October-December (OND), when tropical cyclone (TC) activities are most active in this region. The results reveal that there were more TCs formed over the SSCS during La Nin a years and less TCs during El Nin o years. How different environmental factors (including low-level vorticity, mid-level relative humidity, vertical wind shear, and potential intensity) contribute to this influence is investigated, using a genesis potential (GP) index developed by Emanuel and Nolan. Composite anomalies of the GP index are produced for El Nin o and La Nin a years separately, which could account for the changes of TC frequency over the SSCS in different ENSO phases. The degree of contribution by each factor is determined quantitatively by producing composites of modified indices in which only one of the contributing factors varies, with the others set to climatology. The results show that the mid-level relative humidity makes the largest contribution to the ENSO modulation of tropical cyclogenesis over the SSCS. Although warmer sea surface temperatures (SSTs) and larger amount of evaporation from the ocean surface were observed over the SSCS during El Nin o years, anomalous descending motions due to the anomalous Walker circulations inhibited the upward transports of water vapor and led to less moisture contents in the middle troposphere, which suppressed TC formations. | WANG Lei ZHANG Qiongwan LI Weibiao | 2012 | Acta Oceanologica Sinica2012，31，5： | 2 |
| 10 | Experimental study on ignition of premixed gases with steam under catalytic reforming reaction显示文摘 | Fu Weibiao Qin Chuan Li Changle | 2001 | Fuel Processing Technology2001，72，： | 1 |
| 11 | HCl-induced and ATP-dependent upregulation of TRPV1 receptor expression and cytokine production by human esophageal epithelial cells显示文摘 | Jie Ma Annamaria Altomare Michele Guarino Michele Cicala Florian Rieder Claudio Fiocchi Dan Li Weibiao Cao Jose Behar Piero Biancani Karen M. Harnett | 2012 | AJP: Gastrointestinal and Liver Physiology2012，，5： | 1 |
| 12 | A high energy nanosecond cryogenic cooled Yb:YAG active-mirror amplifier system显示文摘A diode-pumped master oscillator power amplifier system based on a cryogenic Yb:YAG active-mirror laser has been developed.The performances of the laser amplifier at low temperature and room temperature have been investigated theoretically and experimentally.A maximum output energy of 3.05 J with an optical-to-optical efficiency of 14.7% has been achieved by using the master amplifier system. | Xiaojin Cheng Jianlei Wang Zhongguo Yang Jin Liu Lei Li Xiangchun Shi Wenfa Huang Jiangfeng Wang Weibiao Chen | 2014 | High Power Laser Science and Engineering2014，2，3： | 1 |
| 13 | Absence of FHIT expression is associated with apoptosis inhibition in colorectal cancer显示文摘Objective: To investigate the expression of fragile histidine triad (FHIT) protein in normal colorectal tissue, colorectal adenoma and colorectal cancer (CRC), and to study the relationships between the expression of FHIT protein and the clinical pathology, the apoptosis-associated protein (Bcl-2, Bax, Survivin), apoptosis in colorectal cancer. Methods: Tissue microarray (TMA) and immunohistochemistry SP were used to detect the expression of FHIT gene, Bcl-2, Bax and Survivin in 16 cases of the normal colorectal tissue, 16 cases of colorectal adenoma and 80 cases of the colorectal cancer. TUNEL was used to detect the apoptosis index (AI) in 80 cases of the colorectal cancer. Results: (1) The positive rates of FHIT gene expression in normal colorectal tissue, colorectal adenoma and adenocancer were 93.75%, 68.75% and 46.25% respectively. There were no significant differences in the relationships between the FHIT gene expression and histological types, the gender as well as the age (P>0.05). There were significant relationships between FHIT gene expression and lymph node metastasis, histological grades, Duke’s system as well as the 5-year survival rate after operation. (2) The positive rates of Bax, Bcl-2 and Survivin in colorectal adenocancer were 72.50%, 51.25%, 77.50% respectively. The expression of FHIT gene was positively correlated with that of Bcl-2, Bax and Survivin. (3) The mean AI in FHIT negative tumors was significantly lower than that in FHIT positive tumors (P<0.01). Conclusion: FHIT gene may play a role in the oncogenesis and progression of colorectal cancer. The abnormal regulation of apoptosis may play an important role in the pathogenesis of colorectal cancer. | Jie Cao Xiaoping Chen Wanglin Li Jie Xia Hong Du Weibiao Tang Hui Wang Xiwen Chen Huanqing Xiao Yuyuan Li | 2007 | The Chinese-German Journal of Clinical Oncology2007，6，1： | 1 |
| 14 | Experimental Study on Ignition of Premixed Gases with Steam Undercatalytic Reforming Reaction显示文摘 | FU WEIBIAO QIN CHUAN LI CHANGLE | 2001 | Fuel Processing Technology2001，72，： | 1 |
| 15 | Phase/size dual controlled 2D semiconductor In_(2)X_(3)(X=S,Se,Te)for saturable absorption modulation显示文摘The production of two-dimensional nanosheets(2D NSs)with all sizes(1-100 nm)and few(<10)layers is highly desired but far from satisfactory.Herein,we report an all-physical top-down method to produce indium chalcogenide(In2X3(X=S,Se,Te))NSs with wide-range(150-3.0 nm)controlled sizes.The method combines silica-assisted ball-milling and sonication-assisted solvent exfoliation to fabricate multiscale NSs with varying distributions,which are then precisely separated by cascade centrifugation.Multiple characterization techniques reveal that the as-produced In2X3 NSs are intrinsic and defect-free and remainβ-phase during the whole process.The redispersions of In2X3 NSs exhibit prominent excitation wavelength-,solvent-,concentration-,and size-dependent photoluminescence.The NSs-poly(methyl methacrylate)(PMMA)hybrid thin films demonstrate strong size effects in nonlinear saturation absorption.The absolute modulation depths of 35.4%,43.3%,47.2%and saturation intensities of 1.63,1.05,0.83 MW·cm^(−2)(i.e.,163,105,and 83 nJ·cm^(−2))are derived for the In_(2)S_(3),In_(2)Se_(3),and In2Te3 quantum sheets,respectively.Our method paves the way for mass production and full exploration of full-scale 2D NSs. | Weibiao Wang Zhexue Chen Xinyu Sui Yueqi Li Xinfeng Liu Yong Zhang | 2022 | Nano Research2022，15，6： | 1 |
| 16 | Variations in High-frequency Oscillations of Tropical Cyclones over the Western North Pacific显示文摘Variations in the high-frequency oscillations of tropical cyclones(TCs) over the western North Pacific(WNP) are studied in numerical model simulations. Power spectrum analysis of maximum wind speeds at 10 m(MWS_(10)) from an ensemble of15 simulated TCs shows that oscillations are significant for all TCs. The magnitudes of oscillations in MWS_(10) are similar in the WNP and South China Sea(SCS); however, the mean of the averaged significant periods in the SCS(1.93 h) is shorter than that in the open water of the WNP(2.83 h). The shorter period in the SCS is examined through an ensemble of simulations,and a case simulation as well as a sensitivity experiment in which the continent is replaced by ocean for Typhoon Hagupit(2008). The analysis of the convergence efficiency within the boundary layer suggests that the shorter periods in the SCS are possibly due to the stronger terrain effect, which intensifies convergence through greater friction. The enhanced convergence strengthens the disturbance of the gradient and thermal wind balances, and then contributes to the shorter oscillation periods in the SCS. | Shumin CHEN Weibiao LI Zhiping WEN Mingsen ZHOU Youyu LU Yu-Kun QIAN Haoya LIU Rong FANG | 2018 | Advances in Atmospheric Sciences2018，35，4： | 1 |
| 17 | Role of intracellular calcium and NADPH oxidase NOX5-S in acid-induced DNA damage in Barrett's cells and Barrett's esophageal adenocarcinoma cells显示文摘 | Dan Li Weibiao Cao | 2014 | AmJ Physiol Gastrointest Liver Physiol2014，，： | 1 |
| 18 | Experimental study on ignition of premixed gases with steam under catalytic reforming reaction显示文摘 | Fu Weibiao Qin Chuan Li Changle | 2001 | Fuel Processing Technology2001，72，2： | 1 |
| 19 | Impacts of sea spray on the boundary layer structure of Typhoon Imbudo显示文摘High winds in a typhoon over the ocean can produce substantial amounts of spray in the lower part of the atmospheric boundary layer,which can modify the transfer of momentum,heat,and moisture across the air-sea interface.However,the consequent effects on the boundary layer structure and the evolution of the typhoon are largely unknown.The focus of this paper is on the role of sea spray on the storm intensity and the structure of the atmospheric boundary layer.The case study is Typhoon Imbudo in July 2003.The results show that sea spray tends to intensify storms by increasing the sea surface heat fluxes.Moreover,the effects of sea spray are mainly felt in boundary layer.Spray evaporation causes the atmospheric boundary layer to experience cooling and moistening.Sea spray can cause significant effects on the structure of boundary layer.The boundary-layer height over the eyewall area east to the center of Typhoon Imbudo was increased with a maximum up to about 550 m due to sea spray,which is closely related with the enhancements of the heat fluxes,upward motions,and horizontal winds in this region due to sea spray. | TANG Jie LI Weibiao CHEN Shumin WANG Lei | 2013 | Acta Oceanologica Sinica2013，32，11： | 1 |
| 20 | Development of a space cold atom clock显示文摘Atomic clocks with cold atoms play important roles in the field of fundamental physics as well as primary frequency standards.Operating such cold atom clocks in space paves the way for further exploration in fundamental physics,for example dark matter and general relativity.We developed a space cold atom clock(SCAC),which was launched into orbit with the Space Lab TG-2 in 2016.Before it deorbited with TG-2 in 2019,the SCAC had been working continuously for almost 3 years.During the period in orbit,many scientific experiments and engineering tests were performed.In this article,we summarize the principle,development and in-orbit results.These works provide the basis for construction of a space-borne time-frequency system in deep space. | Wei Ren Tang Li Qiuzhi Qu Bin Wang Lin Li Desheng Lu Weibiao Chen Liang Liu | 2020 | National Science Review2020，7，12： | 1 |
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