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Impacts of Different Dynamic Factors on the Saltwater Intrusion in the Northern Branch of the Yangtze Estuary

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China Ocean Engineering 2019年第6期33卷 673-684页

作者： WANG jin-hua zhang De-bin zhang Wei-sheng zhang jin-shan State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research InstituteNanjing 210029China College of Harbor Coastal and Offshore EngineeringHohai UniversityNanjing 210098China

A 3-D baroclinic numerical model is established to study the temporal and spatial distribution of salinity in the Northern Branch(NB) of the Yangtze Estuary(YE) in response to river runoff, wind and currents. The idealized,process-oriented studies show that the lower river runoff in the dry season is the main driving factor for the spilling over from the NB to the Southern Branch(SB). The NB takes longer time to get in dynamic stable state compared with the SB, as the runoff transfers from the wet season to the dry season. The vertical stratification intensity of the NB has obvious periodic phenomena in the dry season, and the stratification strength is enhanced under the action of low runoff and north wind, which further weakens the vertical transport of water. Momentum balance analysis suggested that the landward net flux increases when considering the influence of the moderate north wind, and the landward flux will enhance if considering the boundary current during the spring tide. With the influence of the boundary current, increases the average salinity of the NB, as well as the intrusion degree from the NB to the *** indicates that the nearshore ocean current of the Yellow Sea is an important factor affecting the saltwater intrusion in the NB of the YE.

关键词： Yangtze Estuary saltwater intrusion ocean currents vertical stratification FVCOM

An Empirical Formula for Suspended Sediment Delivery Ratio of Main River after Confluence of Debris flow

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Journal of Mountain Science 2013年第2期10卷 326-336页

作者： zhang jin-shan CUI Peng Key Laboratory of Mountain Hazard and Surface Process Institute of Mountain Hazards and EnvironmentChinese Academy of Sciences

In order to calculate the suspended sediment discharge of the flood debris flows into the main river,a small scale flume test was designed to simulate the process of confluence of Jiangjia Ravine and Xiangjiang River in Yunnan province,*** test observation and data analysis,suspended sediment discharge of Debris flow after its entry into the main river was found to have a close relation with the bulk density,the confluence angle of the Debris flow and the main river,the ratio between per unit width discharge of Debris flow and main *** on the measured and simulated results,and statistical analysis,an empirical formula was proposed for the suspended SDR(Sediment Delivery Ratio) of the main river after the confluence of Debris *** with the observed results of Debris flow in 2009,the error between the data calculated by the empirical formula and the monitored data is only about 10%.

关键词： Debris flow Confluence SuspendedSediment Delivery Ratio (SDR) Jiangjia Ravine Xiaojiang River Model

U.S. national parks accessibility and visitation

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Journal of Mountain Science 2019年第12期16卷 2894-2906页

作者： SHEN Xing-ju HUANG Rui-hong zhang jin-shan College of Historical Culture&Tourism Southwest Minzu UniversityChengdu 610041China Department of Geography Planningand RecreationNorthern Arizona UniversityFlagstaffAZ 86011-5016USA Key Laboratory of Mountain Hazards and Earth Surface Process Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China

Accessibility is a factor affecting national park ***,the effect of accessibility on national park visitation is not fully *** paper examines the relationship between *** park visitation and ***,the global and local accessibility indexes of each park unit are computed based on an accessibility model that takes into account the surrounding population and its proximity to the park *** in the model is a distance decay coefficient that is derived from *** park visitor surveys and therefore pertinent to the case of *** correlation analysis is performed between park visitation and accessibility based on park types,regions,and visitation *** show that total visitation is positively related to accessibility in National Memorials,Military Parks and Battlefield Parks/Sites but negatively related to accessibility in national parks and national ***,recreational overnight stay visits are commonly negatively correlated to accessibility for almost all park ***,local accessibility index displays enhanced correlation coefficients with improved significance levels in many categories of *** suggest that historical/cultural national parks which often show positive correlations tend to attract more local visitors,but nature-based parks which mainly show negative correlations tend to attract more distant visitors.

关键词： U.S.National Park Accessibility Visitation Distance decay GIS

A Note on Zeros of Characters of Finite Groups

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Journal of Mathematical Research and Exposition 2008年第3期28卷 589-592页

作者： zhang jin shan Sill Wu Jie Department of Mathematics Leshan Teachers＇ College Sichuan 614004 China School of Mathematics Suzhou University Jiangsu 215006 China

The aim of this note is to classify the finite meta-abelian groups in which every irreducible character vanishes on at most three conjugacy classes.

关键词： finite groups chavacters zeros.

EXPLICIT SIMULATION ON THE TRACK AND INTENSITY OF TROPICAL CYCLONE WINNIE (1997)

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Journal of Hydrodynamics 2006年第6期18卷 736-741页

作者： ZHONG Zhong zhang Jirl-shan Institute of Meteorology PLA University of Science and Technology Nanjing 211101 China Nanjing Hydraulic Research Institute Nanjing 210029 China

An explicit simulation of the tropical cyclone Winnie （1997） was conducted by use of a triply-nested 3-D nonhydrostatic mesoscale model MM5, before and after its landfall. The simulated results show that the model can well reproduce the track of Winnie （1997） with a BOGUS storm-like vortex inserted in the large-scale first-guess field at the initial model time. The mean track error in a 6 h interval is 54.5 km, which is much less than that obtained with the operational prediction. Comparisons between simulation and observation near the landfall place show that the main temporal variation features of sea level pressure and surface wind speed can also be successfully captured. The characteristics of the eyewall, the spiral cloud band and the corresponding precipitation were disclosed, and the applications of the model outputs were also discussed.

关键词： tropical cyclone simulation track intensity,eyewall spiral cloud band storm surge

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人工智能THA术前规划的尸体验证研究

中国矫形外科杂志 2024年第16期32卷 1497-1501页

作者：郑勇强王泽峰方阳振刘晓峰张鸿鹏张金山晋江市医院(上海市第六人民医院福建医院)骨科福建晋江362200

[目的]验证“肩对肩”解剖标记定位法在大体标本全髋关节置换(total hip arthroplasty,THA)中恢复下肢长度的作用。[方法]在4具尸体行闭孔外肌肌腱止点的下为截骨标志的“肩对肩”THA,测量术后骨盆正位片下肢长度、尖肩距、截骨距、股... 详细信息

[目的]验证“肩对肩”解剖标记定位法在大体标本全髋关节置换(total hip arthroplasty,THA)中恢复下肢长度的作用。[方法]在4具尸体行闭孔外肌肌腱止点的下为截骨标志的“肩对肩”THA,测量术后骨盆正位片下肢长度、尖肩距、截骨距、股骨头旋转中心(center of rotation,COR)纵向及水平偏移度、髋臼外展角及前倾角,并与人工智能辅助规划系统(AIHIP)进行验证。[结果]4具尸体术后均达到双下肢等长。术后影像学与AIHIP规划的尖肩距、截骨距、股骨头旋转中心纵向偏移度及旋转中心水平偏移度比较差异均无统计学意义(P>0.05);术后影像学测量的髋臼外展角[(32.5±3.1)°vs(41.3±2.5)°,P=0.005]显著小于AIHIP规划的髋臼外展角,术后影像学测量的髋臼前倾角[(25.3±9.4)°vs(18.8±2.5)°,P=0.030]显著大于AIHIP规划的髋臼前倾角。术中测量的尖肩距显著大于术后影像测量[(26.3±2.6)mm vs(15.5±1.5)mm,P<0.001]和术前AIHIP规划[(26.3±2.6)mm vs(17.0±2.2)mm,P<0.001]。[结论]尸体手术对AIHIP的验证表明,股骨侧“肩对肩”解剖标记定位法能够保证股骨侧假体准确置入合适位置,有效恢复下肢长度,尽管不同时间点测量的部分参数有差异。

关键词：全髋关节置换尸体手术人工智能规划解剖标志测量

Hepatic recompensation according to the Baveno VII criteria via a transjugular intrahepatic portosystemic shunt: Is this true?

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World Journal of Gastrointestinal Surgery 2024年第8期16卷 2742-2744页

作者： jin-shan zhang Department of General Surgery Capital Institute of PediatricsBeijing 100020China

Hepatic recompensation is firstly described in the Baveno VII criteria,which requires the fulfillment of strict ***,a primary cause of cirrhosis must be addressed,suppressed,or ***,complications of liver cirrhosis,inclu-ding ascites,encephalopathy,and variceal hemorrhage,must disappear without any ***,liver function indicators must be ***,without addressing/suppressing/curing cirrhosis and improvement in liver syn-thetic function,complications,including ascites and variceal hemorrhage can be improved by a transjugular intrahepatic portosystemic shunt(TIPS),which is not evidence of hepatic ***,on the basis of the definition of hepatic recompensation,TIPS does not achieve hepatic recompensation.

关键词： Hepatic recompensation Transjugular intrahepatic portosystemic shunt Liver function Cirrhosis

Remodeling the tumor microenvironment by vascular normalization and GSH-depletion for augmenting tumor immunotherapy

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Chinese Chemical Letters 2024年第2期35卷 329-334页

作者： jin Wang Qingqing zhang Yanchen Li Xiaoyan Pan Yuanyuan shan Jie zhang School of Pharmacy Health Science CenterXi'an Jiaotong UniversityXi'an 710061China Department of Pharmacy The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061China

Remodeling tumor microenvironment(TME)is a very promising and effective strategy to enhance the effects of chemotherapy,photodynamic therapy,and *** of tumor vasculature as well as depletion of glutathione(GSH)can improve the ***,we developed a novel therapeutic nanoparticle functional enzyme ultra QDAU5 nanoparticles(FEUQ Nps)based on a fluorescence-on and releasable strategy by combining a vascular normalization inducer,a GSH depleting agent,and an activated *** which the cleavage of disulfide bonds releases active molecules that induce vascular normalization and improve the hypoxic *** addition,it may deplete GSH in cancer cells,thus inducing the production of reactive oxygen species(ROS)and lipid peroxide(LPO)and promoting iron *** may also lead to endoplasmic stress and release of calmodulin,which activates the immune ***,quenched fluorophores are turned on in the presence of galactosidase(GLU)for tumor-specific *** summary,we developed novel therapeutic agent nanoparticles with the function of vascular normalization inducers to achieve specific labeling of hepatocellular carcinoma while exerting efficient antitumor effects in vivo.

关键词： Vascular normalization Tumor microenvironment GSH depletion Ferroptosis Activated immune

Synthesizing active and durable cubic ceria catalysts(<6 nm)for fast dehydrogenation of bio-polyols to carboxylic acids coproducing green H_(2)

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Green Energy & Environment 2024年第3期9卷 529-543页

作者： Mengyuan Liu Puhua Sun Guangyu zhang Xin jin Chaohe Yang Honghong shan State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringChina University of PetroleumNo.66 Changjiang West RoadQingdaoShandong266580China SINOPEC Research Institute of Safety Engineering Co. Ltd.No.339 Songling RoadQingdaoShandong266000China

Dehydrogenation is considered as one of the most important industrial applications for renewable *** ceria-based catalysts are known to display promising dehydrogenation performances in this *** particle size(>20 nm)and less surface defects,however,hinder further application of ceria ***,an alternative strategy involving lactic acid(LA)assisted hydrothermal method was developed to synthesize active,selective and durable cubic ceria of<6 nm for dehydrogenation *** studies of growth mechanism revealed that,the carboxyl and hydroxyl groups in LA molecule synergistically manipulate the morphological evolution of ceria *** groups determine the cubic shape and particle size,while hydroxyl groups promote compositional transformation of ceria precursors into CeO_(2) ***,enhanced oxygen vacancies(Vo)on the surface of CeO_(2) were obtained owing to continuous removal of O species under reductive *** CeO_(2) catalysts synthesized by the LA-assisted method,immobilized with bimetallic PtCo clusters,exhibit a record high activity(TOF:29,241 h^(-1))and Vo-dependent synergism for dehydrogenation of bio-derived polyols at 200℃.We also found that quenching Vo defects at air atmosphere causes activity loss of PtCo/CeO_(2) *** regenerate Vo defects,a simple strategy was developed by irradiating deactivated catalysts using hernia *** outcome of this work will provide new insights into manufacturing durable catalyst materials for aqueous phase dehydrogenation applications.

关键词： Cubic ceria Oxygen vacancy Dehydrogenation C-H bond activation