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Chinese Chemical Letters 2022年第11期33卷 4828-4833页

作者： Qian Zhao chong-chen Wang Peng Wang Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation/Beijing Energy Conservation&Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center School of Environment and Energy EngineeringBeijing University of Civil Engineering and ArchitectureBeijing 100044China

MIL-101(Fe)-NH_(2)@Al_(2)O_(3)(MA)catalysts were successfully synthesized by reactive seeding(RS)method onα-Al_(2)O_(3)substrate,which demonstrated excellent photo-Fenton degradation performance toward fluoroquinolone antibiotics(i.e.,norfloxacin,ciprofloxacin,and enrofloxacin).The structure and morphology of the obtained MA were characterized by transmission electron microscopy(TEM),high-resolution transmission electron microscopy(HRTEM),atomic force microscope(AFM).The as-prepared MA could accomplish>90%of norfloxacin degradation efficiency for 10 cycles’photo-Fenton processes,owing to its excellent chemical and water *** addition,the effects of operational factors including H_(2)O_(2)concentration,foreign ions,and pH on the photo-Fenton degradation of norfloxacin over MA were *** ESR spectra further document that^(•)O_(2)^(−),1O_(2)and•OH radicals are prominent in the decomposition process of antibiotic ***,the plausible photo-Fenton norfloxacin degradation mechanisms were proposed and verified.

关键词： MIL-101(Fe)-NH_(2)@Al_(2)O_(3)(MA) Photo-Fenton NOR Mechanism Real solar

Expression Profiles and Protein Complexes of Starch Biosynthetic Enzymes from White-Core and Waxy Mutants Induced from High Amylose Indica Rice

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Rice science 2020年第2期27卷 152-161页

作者： chen Yaling PANG Yuehan bao Jinsong Institute of Nuclear Agricultural Sciences College of Agriculture and BiotechnologyHuajiachi CampusZhejiang UniversityHangzhou 310029China College of Life Sciences Jiangxi Normal UniversityNanchang 330022China

Physicochemical properties of endosperm starches in milled rice determine its cooking and eating *** is synthesized by granule-bound starch synthase I(GBSSI),whilst amylopectin is synthesized by the synergistic activities of starch synthases(SSs),branching enzymes(BEs)and debranching enzymes(DBEs).However,the complexes formed by starch biosynthetic enzymes are not well *** expression profiles and protein complexes were determined in white-core(GM645)and waxy(GM077)mutants derived from a high amylose indica rice Guangluai 4(GLA4).In GM645,genes including AGPS1,GBSSI,SSIIa,BEI,BEIIa,BEIIb,PUL,ISA1 and SP were significantly downregulated during seed *** GM077,the expression levels of AGPL2,AGPS1,AGPS2b,SSIIIa,BEI,PUL and ISA1 were significantly ***-immunoprecipitation assays revealed interactions of SSs-BEs,SSs-PUL and BEs-PUL in developing ***,weak SSI-SSIIa interaction was detected in GM077,whilst SSI-PUL interaction was *** interaction signals for SSI-SSIIa,SSIIa-BEI,SSIIa-BEIIb,BEI-BEIIb and SSI-BEI were also observed in *** results suggest that the protein-protein interactions for starch biosynthesis are modified in mutants,which provides insight into the mechanisms of starch biosynthesis,particularly in indica rice.

关键词： amylose endosperm mutant indica rice protein-protein interaction starch biosynthetic enzyme waxy rice

Theoretical model and testing method for ball indentation based on the proportional superposition of energy in pure elasticity and pure plasticity

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Chinese Journal of Aeronautics 2022年第2期35卷 141-153页

作者： Shuqian SI Lixun CAI Hui chen chen bao Xiaokun LIU Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province School of Mechanics and EngineeringSouthwest Jiaotong UniversityChengdu 610031China School of Civil Engineering Changsha University of Science&TechnologyChangsha 410114China

For a homogeneous,continuous,and isotropic material whose constitutive relationships meets with the Ramberg-Osgood law(R-O law),the energy in the elastoplastic indentation with a ball indenter was theoretically analyzed,and the proportional superposition of energy in pure elasticity and pure plasticity during indentation was considered based on the equivalence of energy ***,a Proportional Superposition-based Elasto Plastic Model(PS-EPM)was developed to describe the relationships between the displacement and the load during the ball ***,a new test method of Ball Indentation based on Elastoplastic Proportional Superposition(BI-EPS)was developed to obtain the constitutive relationships of R-O law *** load–displacement curves predicted using the PS-EPM model were found to agree closely with the Finite Element Analysis(FEA)***,the stress *** curves predicted using the BI-EPS method were in better agreement with those obtained by ***,ball indentation was performed on eleven types of metal materials including five types of aluminum alloys and six types of *** test results showed that the stress *** relationships and the tensile strength values predicted using the proposed BI-EPS method agreed well with the results obtained using conventional uniaxial tensile tests.

关键词： Ball indentation Energy density Proportional superposition of elasticity and plasticity Stress vs.strain relationships Testing method Theoretical model

Modified procedure for prolapse and hemorrhoids: Lower recurrence, higher satisfaction

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World Journal of Clinical Cases 2021年第1期9卷 36-46页

作者： Yan-Yu chen Yi-Fan cheng Quan-Peng Wang Bo Ye chong-Jie Huang chong-Jun Zhou Mao Cai Yun-KuiYe Chang-bao Liu Department of Anorectal Surgery The 2^nd Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina Department of Biostatistics School of Public HealthState University of New York at AlbanyAlbanyNY 12206United States

BACKGROUND Hemorrhoidal prolapse is a common benign disease with a high *** treatment procedure for prolapse and hemorrhoids(PPH)remains an operative method used for internal hemorrhoid *** it is related to less posoperative pain,faster recovery and shorter hospital stays,the postoperative recurrence rate is higher than that of the Milligan-Morgan hemorrhoidectomy(MMH).We have considered that recurrence could be due to shortage of the pulling-up *** issue may be overcome by using lower purse-string sutures[modified-PPH(M-PPH)].AIM To compare the therapeutic effects and the patients’satisfaction after M-PPH,PPH and *** This retrospective cohort study included 1163 patients(M-PPH,461;original PPH,321;MMH,381)with severe hemorrhoids(stage III/IV)who were admitted to The 2nd Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University from 2012 to *** postoperative complications,efficacy,postoperative anal dysfunction and patient satisfaction were compared among the three *** criteria were used to assess short-and long-term postoperative complications.A visual analog scale was used to evaluate postoperative ***-up was conducted 5 years *** Length of hospital stay and operating time were significantly longer in the MMH group(8.05±2.50 d,19.98±4.21 min;P<0.0001)than in other *** incidence of postoperative anastomotic bleeding was significantly lower after MPPH than after PPH or MMH(1.9%,5.1%and 3.7%;n=9,16 and 14;respectively).There was a significantly higher rate of sensation of rectal tenesmus after M-PPH than after MMH or PPH(15%,8%and 10%;n=69,30 and 32;respectively).There was a significantly lower rate of recurrence after M-PPH than after PPH(8.7%and 18.8%,n=40 and 61;P<0.0001).The incidence of postoperative anal incontinence differed significantly only between the MMH and M-PPH groups(1.3%and 4.3%,n=5 and 20;P=0.04).Patient satisfaction was significant

关键词： Hemorrhoids Milligan-Morgan hemorrhoidectomy Postoperative complications Procedure for prolapse and hemorrhoids Recurrence Patient satisfaction

CONSTRA INT-PRESERVING ENERGY-STA BLE SCHEME FOR THE 2D SIMPLIFIED ERICKSEN-LESLIE SYSTEM

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Journal of Computational Mathematics 2021年第1期39卷 1-21页

作者： Xuelian bao Rui chen Hui Zhang School of Mathematical Sciences Beijing Normal UniversityBeijing 100875China School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China Laboratory of Mathematics and Cormplex Systems Ministry of Education and School of Mathematical SciencesBeijing Normal UniversityBeijing 100875China

Here we consider the numerical approximations of the 2D simplified Ericksen-Leslie *** first rewrite the system and get a new *** the new system,we propose an easy-to-implement time discretization scheme which preserves the sphere constraint at each node,enjoys a discrete energy law,and leads to linear and decoupled elliptic equations to be solved at each time step.A discrete maximum principle of the schemc in the finite element form is also *** numerical simulations are performed to validate the scheme and simulate the dynamic motion of liquid crystals.

关键词： Nematic liquid crystal Ericksen-Leslie system Constraint preserving Finite element.

Effectiveness of Soil Conservation Methods in Preventing Red Soil Erosion in Southern China

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Journal of Mountain Science 2015年第5期12卷 1281-1291页

作者： ZHANG Guo-Hua XIE chong-bao PI Xiao-Yu ZUO Chang-Qing China Irrigation and Drainage Development Center The Water Service Bureau of Chaoyang of Beijing City China Institute of Water Resources and Hydropower Research

Rainfall, runoff(surface runoff and interflow) and soil loss were recorded from 2002 to2005 in an experiment with four treatments on sloping red soil land in southern China. Treatments consisted of bare sloping ground(control check, CK),interplanting with soybean in spring or radish in autumn(I), level terrace(i.e., grass planted on the riser and bunds built at the edge of a bench terrace)(II), and level terraces of orchards with Bahia grass planted on the riser(III). The surface runoff and erosion in treatment II and III during the four years were low despite the occurrence of potentially erosive rains. By contrast, the CK plot had both the highest surface runoff coefficient and the highest sediment yield among all the plots. The surface runoff and soil erosion of the CK plot significantly differed from that of the treatment plots(p I > III > II, whereas their order in terms of interflow was II > III > I > CK. The effects of treatment II were excellent, indicating that level terrace(i.e., grass planted on the riser and bunds built at the edge of a bench terrace) can be an excellent practice for soil and water conservation on sloping red soil land. Soil loss in southern China can be reduced through the widespread use of this approach.

关键词： Red soil Runoff Soil erosion Interflow

Monitoring models for base flow effect and daily variation of dam seepage elements considering time lag effect

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Water Science and Engineering 2018年第4期11卷 344-354页

作者： Shao-wei Wang Ying-li Xu chong-shi Gu Teng-fei bao School of Environmental and Safety Engineering Changzhou University State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University

Affected by external environmental factors and evolution of dam performance, dam seepage behavior shows nonlinear time-varying characteristics. In this study, to predict and evaluate the long-term development trend and short-term fluctuation of the dam seepage behavior, two monitoring models were developed, one for the base flow effect and one for daily variation of dam seepage elements. In the first model, to avoid the influence of the time lag effect on the evaluation of seepage variation with the time effect component of seepage elements, the base values of the seepage element and the reservoir water level were extracted using the wavelet multi-resolution analysis method, and the time effect component was separated by the established base flow effect monitoring model. For the development of the daily variation monitoring model for dam seepage elements, all the previous factors, of which the measured time series prior to the dam seepage element monitoring time may have certain influence on the monitored results, were considered. Those factors that were positively correlated with the analyzed seepage element were initially considered to be the support vector machine(SVM) model input factors, and then the SVM kernel function-based sensitivity analysis was performed to optimize the input factor set and establish the optimized daily variation SVM model. The efficiency and rationality of the two models were verified by case studies of the water level of two piezometric tubes buried under the slope of a concrete gravity *** analysis of the optimized SVM model shows that the influences of the daily variation of the upstream reservoir water level and rainfall on the daily variation of piezometric tube water level are processes subject to normal distribution.

关键词： Dam seepage monitoring model Time lag effect Support vector machine(SVM) Sensitivity analysis Base flow Daily variation Piezometric tube water level

Experiment on surface wake of internal waves generated by underwater vehicle in stratified fluids

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Journal of Hydrodynamics 2022年第2期34卷 277-285页

作者： Zhi-chong Yao Jun Zhang De-bao Gao Chuan-qi Liu Fang-wen Hong China Ship Scientific Research Center Wuxi214082China TaiHu Laboratory on Deep Sea Technology and Science Wuxi214082China National Key Laboratory on Ship Vibration and Noise Wuxi214082China

The surface flow field of internal waves generated by the underwater vehicle is very *** order to study the characteristics of the surface wake of internal waves,a surface particle image velocimetry(PIV)technique which can be used to measure the flow field in the order of mm/s is *** is made with respect to the key technique measuring the micro-velocity flow field of internal waves on the water surface in stratified *** wake generated by SUBOFF model is measured in stratified fluid tank,and the surface flow field of internal waves is successfully measured for the first *** experimental results are compared with predicted results by the classical Tuck’s internal wave *** results show the characteristics of the surface wake signature of internal waves and the variation of the angle between internal wave beams and the surface flow velocity of internal wave with the towing speed of the model are in good *** provides support for further research on wake signature remote sensing of internal waves in laboratory.

关键词： Stratified fluids surface wake signature internal waves experimental research

Review of clinical characteristics,immune responses and regulatory mechanisms of hepatitis E-associated liver failure

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World Journal of Clinical Cases 2022年第19期10卷 6341-6348页

作者： chong chen Shu-Ye Zhang Liang chen Department of Infectious Disease Shanghai Public Health Clinical CenterFudan UniversityShanghai 201508China Department of Hepatology Shanghai Public Health Clinical CenterShanghai 201508China

Hepatitis E virus(HEV)is the most common cause of acute liver failure(LF)and one of the most common factors causing acute injury in acute-on-chronic LF(ACLF).When HEV-related LF occurs,a series of changes take place in both the intrahepatic environment and extrahepatic *** changed types and distribution of immune cells(infiltrating macrophages and increased lymphocytes)in liver tissue,as well the increased proinflammatory cytokines and chemokines in the blood,indicate that the occurrence and progression of HEVrelated LF are closely related to immune *** clinical features and immune reaction in the body during HEV-related acute LF(ALF)and ACLF are *** review highlights recent progress in elucidating the clinical manifestations of HEV-associated ALF and ACLF and discusses the corresponding systemic immune changes and possible regulatory mechanisms.

关键词： Hepatitis E virus Acute liver failure Acute-on-chronic liver failure Immune cells Cytokines Mechanism

Enhanced compression ductility of stoichiometric NiAl at room temperature by Y and Cu co-addition

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International Journal of Minerals,Metallurgy and Materials 2012年第4期19卷 348-353页

作者： Xing-hao Du chong Gao bao-lin Wu Yu-hua Zhao Ji-jie Wang School of Materials Science and Engineering Shenyang Aerospace University Shenyang 110136 China

The combined effects of （Y, Cu） on the microstructttre and room-temperature mechanical properties of the NiA1 intermetallic com- pound under uniaxial compression stress were investigated. It is found that the co-addition of Y and Cu enlarges the difference between the inter- granular yield strength and the intragranular yield strength of NiA1 grains. Hence, for the resultant NiAI-（Y,Cu） alloy, a mechanically hierar- chical structure forms. This is beneficial to improve the room-temperature mechanical response of NiA1 alloys; as a result, the resultant alloy with 0.56at% （Y, Cu） exhibits a remarkably enhanced compression plasticity of about 11.2%.

关键词： intermetallics microalloying microstructure plasticity