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| 1 | A Possible Dynamic Mechanism for Rapid Production of the Extreme Hourly Rainfall in Zhengzhou City on 20 July 2021显示文摘In this study,the unprecedented extreme rainfall event during 19-20 July 2021,which caused devastating flooding in Zhengzhou City and its nearby areas,is examined based on observational data analysis and WRF model 40-h simulations on 1-km horizontal resolution.The results show that the model successfully reproduces(i)major synopticscale weather systems(i.e.,the western Pacific subtropical high,the Tibetan high,two typhoons,and the Huang-Huai cyclone),(ii)convective initiation along the east to north edge of the Songshan Mountain,where orographic lifting is obvious,and(iii)subsequent formation of the convective storm producing the extreme rainfall in Zhengzhou.In particular,the model generates the maximum rainfall rate of 233 mm h^(-1)and 40-h accumulated rainfall of 704 mm,corresponding well to the observed extreme values of 201.9 mm h^(-1)and 818 mm,at nearly observed timing and location.Importantly,the model reproduces an intense quasi-stationary,well-organized meso-γ-scale convective system,surrounded by an arc-shaped convergence zone,allowing the development of convective updrafts in a three-quarter circle around the convective system,in a way similar to“multidirectional pumping,”attracting all associated precipitation overlaid and concentrated into the same trailing region to generate the extreme hourly rainfall over Zhengzhou.Our study emphasizes the significant contribution of the unique dynamic structure of the well-organized meso-γ-scale convective system to the record-high hourly rainfall.A possible dynamic mechanism for short-time extreme rainfall production is proposed.That is,the arc-shaped convergence zone of the mesoscale convective system,acting like multidirectional lifting pumps,transports precipitation from different directions into the same region,and thus produces the extreme rainfall.The results gained herein may shed new light on better understanding and forecasting of short-time extreme rainfall. | Jinfang YIN Haodong GU Xudong LIANG Miao YU Jisong SUN Yanxin XIE Feng LI Chong WU | 2022 | Journal of Meteorological Research2022，36，1： | 17 |
| 2 | Study on slope reliability method Response Surface Method based on Morgenstern-Price Method显示文摘The combination of Morgenstern-Price Method (MPM) with Response Surface Method (RSM) improves the conventional RSM by replacing Finite-Element Method (FEM) with MPM, which is a type of reliability analysis method--RSM based on MPM, and makes the computing process simpler. The stability of the slope was re-evaluated by use of Monte Carlo method (MCM) and the result contrasted with the fore is the conclusion. The reliability analysis of the artificial slope in Donggang Power Station was carried on, and obtained the reliable characteristics, which provided basis for the project. | RONG Fan CHEN Li YU Yanxin Tian Shouqi | 2009 | Global Geology2009，12，3： | 5 |
| 3 | Weaving 3D highly conductive hierarchically interconnected nanoporous web by threading MOF crystals onto multi walled carbon nanotubes for high performance Li-Se battery显示文摘Lithium-selenium(Li-Se)battery has attracted growing attention.Nevertheless,its practical application is still impeded by the shuttle effect of the formed polyselenides.Herein,we report in-situ hydrothermal weaving the three-dimensional(3 D)highly conductive hierarchically interconnected nanoporous web by threading microporous metal organic framework MIL-68(Al)crystals onto multi-walled carbon nanotubes(MWCNTs).Such 3 D hierarchically nanoporous web(3 D MIL-68(Al)@MWCNTs web)with a very high surface area,a large amount of micropores,electrical conductivity and elasticity strongly traps the soluble polyselenides during the electrochemical reaction and significantly facilitates lithium ion diffusion and electron transportation.Molecular dynamic calculation confirmed the strong affinity of MIL-68(Al)for the adsorption of polyselenides,quite suitable for Li-Se battery.Their hexahedral channels(1.56 nm)are more efficient for the confinement of polyselenides and for the diffusion of electrolytes compared to their smaller triangular channels(0.63 nm).All these excellent characteristics of 3 D MIL-68(Al)@MWCNTs web with suitable confinement of a large amount of selenium and the conductive linkage between MIL-68(Al)host by MWCNTs result in a high capacity of 453 m Ah/g at 0.2 C with 99.5%coulombic efficiency after 200 cycles with significantly improved cycle stability and rate performance.The 3 D MIL-68(Al)@MWCNTs web presents a good performance in Li-Se battery in term of the specific capacity and cycling stability and also in terms of rate performance compared with all the metal-organic framework(MOF)based or MOF derived porous carbons used in Li-Se battery. | Chao Li Yingying Wang Hongyan Li Jing Liu Jianping Song Luca Fusaro Zhi-Yi Hu Yanxin Chen Yu Li Bao-Lian Su | 2021 | Journal of Energy Chemistry2021，30，8： | 4 |
| 4 | Chlorobenzenes Contamination in Soils/Sediments at a Site of Decommissioned Plant in Central China显示文摘China is one of the most important producers and suppliers of the chlorobenzenes(CBs), accounting for more than 50% of the world production. Although CBs contamination at the sites of chemical production factories is well-known, the knowledge on spatial distribution and contaminated degree of CBs are still limited. To better understand the occurrence of CBs, a total of 161 soil/sediment samples were collected from 36 sampling points within a 20 m deep from a site of decommissioned chlorobenzenes-producing factory in Wuhan City, Hubei Province, central China. The results showed that monochlorobenzene(MCB) is the predominant contaminants with the ΣCBs levels ranging from 0.05 to 8 600 mg/kg dry weight(dw) with a mean value of 384 mg/kg dw. The vertical distribution of CBs indicated that CBs may have clearly transported to deeper sections in the subsurface. Statistical analyses showed that there are no good correlations between the ΣCBs concentration with soil organic matter(SOM) content and the moisture content. | Mei Yu Zejiao Luo Yanxin Wang Junxia Li | 2018 | Journal of Earth Science2018，29，3： | 3 |
| 5 | Mesencephalic astrocyte-derived neurotrophic factor reduces cell apoptosis via upregulating HSP70 in SHSY-5Y cells显示文摘Background:Mesencephalic astrocyte-derived neurotrophic factor(MANF)is a new candidate growth factor for dopaminergic neurons against endoplasmic reticulum stress(ER stress).HSP70 family,a chaperon like heat shock protein family,was proved to be involved in the MANF induced survival pathway in 6-OHDA treated SHSY-5Y cells.However,the ER stress relative transcriptome,in MANF signaling cascades is still investigated.The involvement of HSP70,a 70kd member of HSP70 family,need further to be verified.Methods:The cell apoptosis was assayed by MTT,TUNEL staining and western blot of cleaved Caspase-3.The differentially expressed genes in SHSY-5Y cells under different conditions(control,6-OHDA,6-OHDA+MANF)were investigated by RNA-seq.Expression of HSP70 was further confirmed by real-time PCR.RNAi knockdown for HSP70 was performed to investigate the role of HSP70 in the MANF signaling pathway.Results:MANF inhibits 6-OHDA-induced apoptosis in SHSY-5Y cells.Six ER stress relative genes(HSP70,GRP78,xbp-1,ATF-4,ATF-6,MAPK)were found enriched in 6-OHDA+MANF treatment group.HSP70 was the most significantly up-regulated gene under 6-OHDA+MANF treatment in SHSY-5Y cells.RNAi knockdown for HSP70 inhibits the protective effects of MANF against 6-OHDA toxicity in SHSY-5Y cells.Conclusion:MANF exerts a protective role against 6-OHDA induced apoptosis in SHSY-5Y cells via up-regulating some ER stress genes,including HSP70 family members.The HSP70 expression level plays a key role in MANFmediated survival pathway. | Hui Sun Ming Jiang Xing Fu Qiong Cai Jingxing Zhang Yanxin Yin Jia Guo Lihua Yu Yun Jiang Yigang Liu Liang Feng Zhiyu Nie Jianmin Fang Lingjing Jin | 2017 | Translational Neurodegeneration2017，6，1： | 2 |
| 6 | Decolorization and COD removal of secondary yeast wastewater effluents by coagulation using aluminum sulfate 显示文摘 | Yu Zhou Zhen Liang Yanxin Wang | 2008 | Desalination2008，，225： | 1 |
| 7 | Effective NOx decomposition and storage/reduction over mixed oxides derived from layered double hydroxides 显示文摘 | Yu Junjie Wang Xiaoping Tao Yanxin | 2007 | Ind Eng Chem Res2007，46，17： | 1 |
| 8 | Concurrent Design for Process Quality, Statistical Tolerance, and SPC 显示文摘 | ZHANG Yu YANG Musheng ZHANG Yanxin | 2006 | Communications in Statistics - Theory and Methods2006，35，10： | 1 |
| 9 | Decolorization and COD removal of secondary yeast wastewater effluents by coagulation using aluminum sulfate 显示文摘 | Yu Zhou Zhen Liang Yanxin Wang | 2008 | Desalination2008，225，： | 1 |
| 10 | Hexachlorocyclohexanes(HCHs)in placenta and umbilical cord blood and dietary intake for women in Beijing,China显示文摘 | Yanxin Yu Bin Wang Xilong Wang | 2013 | Environmental Pollution2013，179，8： | 1 |
| 11 | The characteristic of sound propagation in deep water and underwater source localization in the direct zone显示文摘The multiple-path sound propagation in deep water is conducive to source localization of an underwater target.The transmission losses(TLs) and broadband pulse multiple-path propagation characteristics from a deep receiver is analyzed by using the experimental data from deep water area in the South China Sea(SCS).The results indicate that the width of the direct zone near the bottom of 4300 m water depth is about 30 km.The TLs in the direct zone near the bottom are much less than those in the shadow zone.It is meaningful for underwater sound source detection.Moreover,the time delay between the direct path and the bottomsurface-reflected path for a receiver near the bottom decreases monotonically with the source range.According to the linear relationship between the time delay of multipath and source range,a source localization method is presented to estimate the range of underwater target.The experimental results show that the estimated ranges are consistent with the global position system(GPS) measurements,and the mean square error of the estimation results is less than 0.28 km. | WANG Mengyuan LI Zhenglin WU Shuanglin QIN Jixing YU Yanxin | 2019 | Chinese Journal of Acoustics2019，38，4： | 1 |
| 12 | Concurrent design for process quality, statistical tolerance, and SPC 显示文摘 | Zhang Yu Yang Musheng Zhang Yanxin | 2006 | Communications in Statistics-Theory and Methods2006，35，10： | 1 |
| 13 | Decolorization and COD removal of secondary yeast wastewater effluents by coagulation using aluminum sulfate显示文摘 | Yu Zhou Zhen Liang Yanxin Wang | 2008 | Desalination2008，225，： | 1 |
| 14 | Stochiometrie relationship in the coagulation of melanoidins dominated molasses wastewater 显示文摘 | Liang Zhen Wang Yanxin Zhou Yu | 2010 | Desalination2010，250，： | 1 |
| 15 | Effect Blasting Excavation of Yujiapeng Tunnel on Stability of Nearby Giant Dangerous Rock Masses (DRM)显示文摘On the basis of the interpretation of engineering geology of the tunnel and of its adjacent dangerous rock masses (DRM), this paper presents the energy and vibration parameters of the explosion that propagates in different blasting modes according to the experimental formulas now usually employed. Then the stability checking computation of T 8-T 12 area, the most dangerous area of DRM, is conducted under the limited blasting condition and with the limited equilibrium method. The result shows that the effect on the stability is only 5.5 % and that this area also contains certain safety reserves. | Yu Hongming Hu Yanxin Engineering Faculty, China University of Geosciences, Wuhan 430074 | 2001 | Journal of China University of Geosciences2001，12，2： | 1 |
| 16 | Coagulation re- moval of melanoidins from biologically treated molasses wastewater using ferric chloride 显示文摘 | Liang Zhen Wang Yanxin Zhou Yu | 2009 | Chemical Engineering Journal2009，152，： | 1 |
| 17 | Adsorption Kinetic Properties of As(Ⅲ)on Synthetic Nano Fe-Mn Binary Oxides显示文摘The adsorptive removal of arsenic by synthetically-prepared nano Fe-Mn binary oxides(FM) was investigated. A novel method using potassium permanganate and ferric chloride as raw materials was used to synthesise FM. The molar ratio of Fe and Mn in the synthetic Fe-Mn binary oxides was 4 : 3. The FM-1 and FM-2(prepared at different activation temperatures) having high specific surface areas(358.87 and 128.58 m^2/g, respectively) were amorphous and of nano particle types. The amount of arsenic adsorbed on FM-1 was higher than that adsorbed on FM-2 particles. After adsorption by FM-1, residual arsenic concentration decreased to less than 10 μg/L. The adsorption kinetics data were analyzed using different kinetic models including pseudo first-order model, pseudo second-order model, Elovich model and intraparticle diffusion model. Pseudo second-order kinetic model was the most appropriate model to describe the adsorption kinetics. The adsorption percentage of As(Ⅲ) increased in the p H range of 2–3 while it decreased with the increase of pH( 3 | Mei Yu Yanxin Wang Shuqiong Kong Evalde Mulindankaka Yuan Fang Ya Wu | 2016 | Journal of Earth Science2016，27，4： | 1 |
| 18 | Variables af- fecting melanoidins removal from molasses wastewater by coagulation/flocculation 显示文摘 | Liang Zhen Wang Yanxin Zhou Yu | 2009 | Separation and Purification Technology2009，68，： | 1 |
| 19 | Hydrolysis and coagulation behavior of polyferric sulfate and ferric sul- phate 显示文摘 | Liang Zhen Wang Yanxin Zhou Yu | 2009 | Water Science and Technology2009，59，： | 1 |
| 20 | Structure of high spin state in proton-rich ^(74,76,78)Kr isotopes:A projected shell model description显示文摘The N≈Z nuclei in the mass A^80 region has been researched because of an abundance of nuclear structure phenomena.The projected shell model(PSM)was adopted to investigate the structure of high spin state in proton-rich 74,76,78Kr isotopes including yrast spectra,moment of inertia,electric quadrupole transitions and the behavior of single particle.The calculated results are in good agreement with available data and the shape coexistence in low-spin is also discussed. | LIU YanXin YU ShaoYing SHEN CaiWan | 2015 | Science China(Physics,Mechanics & Astronomy)2015，58，1： | 1 |
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