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The Roles of Heat Shock Proteins 70 and 90 in Exopalaemon carinicauda After WSSV and Vibrio anguillarum Challenges

Journal of Ocean University of China 2018年第2期17卷 399-406页

作者： LI Jitao LI Jian duan Yafei CHEN ping LIU ping Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Function Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and Technology Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization Sustainable Development of Marine Fisheries of Ministry of Agriculture South China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences

Heat shock proteins(HSPs), such as HSP70 and HSP90, are a suite of highly conserved proteins produced in all cellular organisms when they are exposed to stresses. In aquatic animals, they have been proved to play important roles in response to environmental pollutants and particularly in the non-specific immune responses to pathogen infections. In the present study, the expression profiles of HSP70 and HSP90 genes in hemocytes and hepatopancreas from the ridgetail white prawn Exopalaemon carinicauda infected with WSSV and Vibrio anguillarum were detected using reverse transcription polymerase chain reaction(RT-PCR). After WSSV challenge, the expression level of HSP 70 gene transcripts in the hemocytes and hepatopancreas increased to peak level at 6 h and 48 h, respectively. HSP90 gene transcripts in hemocytes and hepatopancreas were up-regulated significantly at 12 h and 6 h, respectively. During V. anguillarum challenge, the m RNA content of HSP70 gene in hemocytes and hepatopancreas increased significantly at 12 h and 6 h post-infection, respectively. The expression level of HSP90 gene both in hemocytes and hepatopancreas were up-regulated in the first 3 h. The expression patterns of HSP70 and HSP90 genes in hemocytes and hepatopancreas showed temporal and spatial differences after challenged with WSSV and V. anguillarum. The results suggested that HSPs might be involved in immune responses to pathogens challenge in E. carinicauda.

关键词： Exopalaemon carinicauda HSP70 HSP90 expression

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Dual tree complex wavelet transform approach to copy-rotate-move forgery detection

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Science China(Information Sciences) 2014年第1期57卷 125-136页

作者： WU YunJie deng Yu duan HaiBin ZHOU LinNa Science and Technology on Aircraft Control Laboratory BeiHang University Department of Electronics Engineering Tsinghua University

As a common scheme of image tampering,copy-move forgery plays an important role in image forgery *** several blind methods aimed at detecting replicated regions have been proposed,these methods cannot detect the rotation changes in the duplicated areas *** this paper,a new forensic method is presented to detect the replicated areas rotated by arbitrary angles,even by JPEG *** achieve this,overlapping blocks of pixels are decomposed using dual tree complex wavelet transform(DTCWT),and then channel energies are extracted from each subband at each decomposition level using the ***,the anisotropic rotationally invariant features are extracted using magnitudes of discrete Fourier transform for these channel *** implementation procedure of the proposed method is described in *** experimental results,including a comparative evaluation with existing methods and the special applications in practice,are also presented to demonstrate the robustness and efectiveness of the proposed method.

关键词： digital image forgery digital image forensic copy-rotate-move forgery dual tree complex wavelet transform

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Microphysical Properties of Rainwater in Typhoon Usagi(2013):A Numerical Modeling Study

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Advances in Atmospheric Sciences 2019年第5期36卷 510-526页

作者： Lin deng Wenhua GAO Yihong duan Yuqing WANG Nanjing University of Information Science and Technology State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences International Pacific Research Center and Department of Atmospheric Sciences School of Ocean and Earth Science and Technology University of Hawai'i at Mānoa

A 2-km resolution simulation using the Weather Research and Forecasting model with Morrison microphysics was employed to investigate the rainwater microphysical properties during different stages of Typhoon Usagi(2013) in the inner-core and outer region. The model reproduced the track, intensity, and overall structure of Usagi(2013) reasonably. The simulated raindrop size distribution showed a rapid increase in small-size raindrop concentration but an oscillated decrease in large-size ones in the inner-core region, corresponding well with the upward motion. It was found that there existed two levels(1.25 and 5.25 km) of maximum number concentration of raindrops. The ice-related microphysics at high levels was stronger than the warm-rain processes at low levels. The larger raindrops formed by self-collection in the inner-core suffered from significant breakup, but the raindrops outside the eyewall did not experience evident breakup. Model results indicated that the dominant terms in the water vapor budget were the horizontal moisture flux convergence(HFC) and local condensation and deposition. The evaporation from the ocean surface(PBL) was ~10% of the HFC in the inner core, but up to 40% in the outer region as the air therein was far from saturation. Furthermore, water vapor in the outer region was obtained equally through evaporation from the cloud and inward transportation from the environment. An earlier start of cloud microphysical processes in the inner-core region was evident during the intensification stage, and the continuous decreasing of condensation in both the inner-core and outer regions might imply the beginning of the storm weakening.

关键词： raindrops microphysical properties typhoon simulation

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Finite element method for viscoelastic medium with damage and the application to structural analysis of solid rocket motor grain

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Science China(Physics,Mechanics & Astronomy) 2014年第5期57卷 908-915页

作者： deng Bin SHEN ZhiBin duan JingBo TANG GuoJin College of Aerospace Science and Engineering National University of Defense Technology

This paper studies the damage-viscoelastic behavior of composite solid propellants of solid rocket motors(SRM).Based on viscoelastic theories and strain equivalent hypothesis in damage mechanics,a three-dimensional(3-D)nonlinear viscoelastic constitutive model incorporating with damage is *** resulting viscoelastic constitutive equations are numerically discretized by integration algorithm,and a stress-updating method is presented by solving nonlinear equations according to the Newton-Raphson method.A material subroutine of stress-updating is made up and embedded into commercial code of *** material subroutine is validated through typical *** results indicate that the finite element results are in good agreement with the analytical ones and have high accuracy,and the suggested method and designed subroutine are efficient and can be further applied to damage-coupling structural analysis of practical SRM grain.

关键词： composite solid propellant viscoelasticity with damage f'mite element method integration algorithm stress-updatingmethod

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A New Periodic Solution to Jacobi Elliptic Functions of MKdV Equation and BBM Equation

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Acta Mathematicae Applicatae Sinica 2012年第2期28卷 409-415页

作者： Hong-cai MA Zhi-ping ZHANG Ai-ping deng Department of Applied Mathematics College of Science Donghua University Shanghai 201620 China School of Mathematics and Information Sciences Henan University Kaifeng 475000 China

Based on the homogeneous balance method, the Jacobi elliptic expansion method and the auxiliary equation method, the first elliptic function equation is used to get a new kind of solutions of nonlinear evolution equations. New exact solutions to the Jacobi elliptic function of MKdV equations and Benjamin-Bona-Mahoney （BBM） equations are obtained with the aid of computer algebraic system Maple. The method is also valid for other （l＋l）-dimensional and higher dimensional systems.

关键词： (1+1)-dimensional MKdV equation BBM equation auxiliary equation method traveling wavesolution nonlinear

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Synergistic promotion of particulate matter reduction and production performance via adjusting electrochemical reactions in the zinc electrolysis industry

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Frontiers of Environmental Science & Engineering 2024年第1期18卷 23-33页

作者： Zizhen Ma Jingkun Jiang Lei duan Jianguo deng Fuyuan Xu Zehui Li Linhua Jiang Ning duan School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao 266520China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of the EnvironmentTsinghua UniversityBeijing 100084China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Physics Peking UniversityBeijing 100871China

Heavy particulate matter (PM) pollution and high energy consumption are the bottlenecks of hydrometallurgy, especially in the electrolysis process. Therefore, an urgent need is to explore PM reduction methods with production performance co-benefits. This study presents three PM reduction methods based on controlling operating parameters, i.e., lowering electrolyte temperature, H2SO4 concentration, and current density of the cathode. The optimized conditions were also investigated using the response surface methodology to balance the PM reduction effect and Zn production. The results showed that lowering electrolyte temperature is the most efficient, with an 89.0% reduction in the PM generation flux (GFPM). Reducing H2SO4 concentration led to the minimum side effects on the current efficiency of Zn deposition (CEZn) or power consumption (PC). With the premise of non-deteriorating CEZn and PC, GFPM can be reduced by 86.3% at the optimal condition (electrolyte temperature = 295 K, H2SO4 = 110 g/L, current density = 373 A/m^(2)). In addition, the reduction mechanism was elucidated by comprehensively analyzing bubble characteristics, electrochemical reactions, and surface tension. Results showed that lower electrolyte temperature inhibited the oxygen evolution reaction (OER) and compressed gas volume. Lower H2SO4 concentration inhibited the hydrogen evolution reaction (HER) and reduced electrolyte surface tension. Lower current density inhibited both OER and HER by decreasing the reaction current. The inhibited gas evolutions reduced the microbubbles’ number and size, thereby reducing GFPM. These results may provide energy-efficient PM reduction methods and theoretical hints of exploring cleaner PM reduction approaches for industrial electrolysis.

关键词： Zinc electrolysis Particulate matter Energy consumption Operating parameters Bubble characteristic Electrochemical reaction

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EAF steelmaking process with increasing hot metal charging ratio and improving slagging regime

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International Journal of Minerals,Metallurgy and Materials 2009年第4期16卷 375-382页

作者： Jian-ping duan Yong-liang Zhang Xue-min Yang Technical Center of Shanxi Taigang Stainless Corporation Limited Taiyuan Shanxi 030003 China Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China

A new electric arc furnace （EAF） steelmaking process with increasing hot metal charging ratio and improving slagging regime simultaneously was developed and applied in a 50 t electric arc furnace for more than a year at No. 1 Steelmaking Plant of Shanxi Taigang Stainless Corporation Limited. The essential fact of the new EAF steelmaking process was to charge hot metal in two portions or steps： firstly, 35wt%-40wt% hot metal was pretreated by blowing oxygen in a specially designed reactor for decar burization and improving hot metal temperature and melting premelted slag; secondly, 30wt% hot metal was charged into EAF with high basicity refining slags from ladle furnace （LF）-vacuum degassing furnace （VD） refining process. The results show that the hot metal charging ratio can reach to about 65wt%-70wt% for the new EAF steelrnaking process; meanwhile, the tap-to-tap time of a 50 t EAF can shorten by 5-10 min, the electricity consumption can decrease by 35-50 kW·h/t, the lime consumption can reduce by 10.5 kg/t of molten steel, and the content of harmful heavy metals in molten steel can be easily controlled to less than the upper limits of aimed steel specification or grade compared with the traditional EAF steelmaking process. In addition, the dephosphorization ability shows a slight strengthening, however, a small degree of lessening for desulphurization ability is observed for the new EAF steelmaking process, but the weakness of desulphurization ability cannot become an obstacle to its further application since a stronger desulphurization ability can be achieved during secondary refining of LF coupled with VD after EAF steelmaking process.

关键词： electric arc furnace (EAF) charge ratio slagging refining slags lime

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Prevention and treatment of pancreatic fistula after pancreatic body and tail resection: current status and future directions

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Frontiers of Medicine 2020年第3期14卷 251-261页

作者： Li Jiang deng Ning Xiao-ping Chen Department of Biliary and Pancreatic Surgery Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Hepatic Surgery Center Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Postoperative pancreatic fistula (POPF) is the most common and critical complication after pancreatic body and tail *** to effectively reduce the occurrence of pancreatic fistula and conduct timely treatment thereafter is an urgent clinical issue to be *** research standardized the definition of pancreatic fistula and stressed the correlation between POPF classification and patient *** to the literature,identification of the risk factors for pancreatic fistula contributed to lowering the rate of the *** management of the pancreatic stump and perioperative treatment are of great significance to reduce the rate of POPF in clinical *** the occurrence of POPF,the treatment of choice should be determined according to the classification of the pancreatic ***,despite the progress and promising treatment approaches,POPF remains to be a clinical issue that warrants further studies in the future.

关键词： pancreatic fistula pancreatic body and tail resection distal pancreatectomy

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Liquid-like polymer lubricating surfaces:Mechanism and applications

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Nano Research 2024年第2期17卷 476-491页

作者： Dagui Wang Jinglong Yang Junchang Guo Zhijuan duan Deihui Wang Fan Xia Fei deng Xu deng Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China State Key Laboratory of Biogeology and Environmental Geology Engineering Research Center of Nano-Geomaterials of Ministry of EducationFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430070China Department of Nephrology Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610054China Department of Nephrology Sichuan Provincial People’s Hospital Jinniu HospitalChengdu Jinniu District People’s HospitalChengdu 610054China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of ChinaShenzhen 518110China

Liquid-like polymer lubricating surfaces(LPLSs)are solid substrates with highly flexible polymer chains grafted via covalent *** unique modification enables ultralow contact-angle hysteresis,repellency of various liquids and bulk ice,and *** distinctive wettability and universality of LPLSs have potential applications in liquid motion,biological detection,and environmental *** this review,we summarize the mechanisms,preparation,and applications of *** discuss the wettability and lubrication mechanisms of liquid droplets on *** then categorize LPLS fabrication into“grafted onto”and“grafted from”groups,depending on the type of *** highlight representative applications with recent developments in anti-complex liquid,anti-icing,anti-biological adhesions,biosensing,and photocatalytic ***,we discuss future challenges and outlooks for LPLSs.

关键词： liquid-like polymer surface lubricating wettability

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Dyes adsorption using a synthetic carboxymethyl cellulose-acrylic acid adsorbent

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Journal of Environmental Sciences 2014年第5期26卷 1203-1211页

作者： Genlin Zhang Lijuan Yi Hui deng ping Sun School of Chemistry and Chemical Engineering Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan Shihezi University

Removal of noxious dyes is gaining public and technological attention. Herein grafting polymerization was employed to produce a novel adsorbent using acrylic acid and carboxymethyl cellulose for dye removal. Scanning electron microscopy and Fourier-transform infrared spectroscopy verified the adsorbent formed under optimized reaction conditions. The removal ratio of adsorbent to Methyl Orange, Disperse Blue 2BLN and malachite green chloride reached to 84.2%, 79.6% and 99.9%, respectively. The greater agreement between the calculated and experimental results suggested that pseudo second-order kinetic model better represents the kinetic adsorption data. Equilibrium adsorptions of dyes were better explained by the Temkin isotherm. The results implied that this new cellulose-based absorbent had the universaiity for removal of dyes through the chemical adsorption mechanism.

关键词： adsorption dye grafting polymerization carboxymethyl cellulose acrylic acid

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