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Identifying the turbulent flow developing inside and around the bottom trawl by Electromagnetic Current Velocity Meter approach in the flume tank

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Journal of Hydrodynamics 2021年第3期33卷 636-656页

作者： Nyatchouba Nsangue Bruno Thierry Hao Tang liu-xiong Xu fuxiang Hu Xinxing You Micah Adekunle David Njomoue Pandong Achille College of Marine Sciences Shanghai Ocean UniversityShanghai201306China National Engineering Research Center for Oceanic Fisheries Shanghai201306China Key laboratory of Oceanic Fisheries Exploration Ministry of Agriculture and Rural AffairsShanghai201306China The Key laboratory of Sustainable Exploitation of Oceanic Fisheries Resources Shanghai Ocean UniversityMinistry of EducationShanghai201306China Scientific Observing and Experimental Station of Oceanic Fishery Resources Ministry of Agriculture and Rural AffairsShanghai201306China Department of Marine Biosciences Tokyo University of Marine Science and TechnologyMinatoTokyoJapan College of Fisheries and life Sciences Shanghai Ocean UniversityShanghai201306China Faculty of Industrial Engineering University of DoualaDoualaCameroon

The Knowledge of turbulent flow developing inside and around the bottom trawl net is of great importance not only for improving the hydrodynamic performance of the gear but also for the selectivity via the fish response,such as the herding response or escape *** 3-D Electromagnetic Current Velocity Meter(ECVM)measurements were performed to investigate the effect of turbulent flow on the bottom trawl net performance and to analyze the turbulence intensity and velocity ratio inside and around different parts of the trawl *** orthogonal decomposition(POD)method was applied in order to extract the phase averaged mean velocity field of turbulent flow from each available ECVM instantaneous *** results demonstrated the existence of turbulence flow,consisting of turbulent boundary layer flow and the turbulence due to the trawl wake developing all inside and around the bottom trawl *** input streamwise velocity results in faster trawl movement and a significant turbulent *** maximum turbulence intensity inside and around trawl wing,square part,first belly,second belly,third belly,cod-end is 0.95%,1.34%,3.40%,4.10%,4.25%and 3.80%,*** was found that the mean velocity field in a turbulent flow inside and around trawl net cod-end recovered on the average was~77.58%of the input streamwise *** is~12.92%,~13.07%,~11.40%,~13.00%and~0.45%less than that inside and around trawl wing,square part,first belly,second belly,and third belly of the bottom trawl net,*** turbulent flow behavior depends strongly on the structure oscillation,input streamwise velocity and,porosity of the net *** is necessary to take into account the velocity reduction inside and around a different part of the trawl net to improve the entire drag force determination,cod-end design,and further selectivity control of the fishing gear.

关键词： Hydrodynamic bottom trawl net turbulent flow Electromagnetic Current Velocity Meter(ECVM) turbulence intensity proper orthogonal decomposition(POD)

Defect-induced electron rich nanodomains in CoSe_(0.5)S_(1.5)/GA realize fast ion migration kinetics as sodium-ion capacitor anode

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Journal of Energy Chemistry 2023年第12期87卷 583-593,I0014页

作者： Tianlin li Danyang Zhao Binghui Du Qing Yin Yongzhi li Xiaolan Xue fuxiang Wei Jiqiu Qi Yanwei Sui China University of Mining and Technology Xuzhou 221116JiangsuChina Jiangsu Province Engineering laboratory of High-Efficient Energy Storage Technology and Equipment School of Materials Science and PhysicsChina University of Mining and TechnologyXuzhou 221116JiangsuChina

Optimizing charge migration and alleviating volume expansion in anode materials are the key to improve the electrochemical performance for sodium-ion storage ***,a hierarchical porous conducting matrix confining defect-rich selenium doped cobalt dichalcogenide(CoSe_(0.5)S_(1.5)/GA)is constructed as a promising SICs anode based on the guidance of theoretical calculation *** increased defect concentration significantly enhanced the disorder degree of the compound and presented electron aggregation around the S atoms,which effectively modulated the electronic structure,further enabling high rate and ultra-capacity sodium ***,strong interfacial coupling could construct spatial constraint to alleviate volume expansion as well as maintain electrode integrity and *** CoSe_(0.5)S_(1.5)/GA electrode can deliver a high capacity of 310.1 mA h g^(-1)after 2000 cycles at 1 A g^(-1),and the CoSe_(0.5)S_(1.5)/GA//AC sodium ion capacitor can exhibit an outstanding energy density of 237.5 W h kg^(-1).A series of characterization and theoretical calculation convincingly reveal that the defect moieties can regulate the Na^(+)storage and diffusion kinetics,which prove that our defect manufacture coupling with space-confined strategy can provide deep insights into the development of high-performance Na^(+)storage devices.

关键词： Sodium-ion capacitors Defect manufacture Electron accumulation Carrier kinetic

Wear Behavior of In-situ TiC Particles Reinforced Aluminum Matrix Composite

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Journal of Wuhan University of Technology(Materials Science) 2017年第3期32卷 552-556页

作者：隋艳伟 CHEN Xiao WANG Rui QI Jiqiu WEI fuxiang HE Yezeng MENG Qingkun 孙智 School of Material Science and Engineering China University of Mining and Teehnology Xuzhou 221116 China

The microstructure, tensile property and wear resistance of 7075 aluminum matrix composite reinforced with TiC particles prepared by in-situ reaction casting were investigated. The effect of TiC reinforcement on wear behavior was analyzed. The wear mechanism was also discussed. A micro-mechanism model of reaction kinetics for synthesis of TiC was acquired. Results show that TiC could increase the tensile and yield strength, but decrease the elongation. Besides, TiC particles improve the property of wear resistance of 7075 aluminum alloy. The wear mechanisms include abrasive wear and adhesive wear in wear test process.

关键词： in-situ reaction TiC tensile properties wear behavior

A newly developed soft-type turtle releasing device(Soft-TRD)for setnet fisheries

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Aquaculture and Fisheries 2021年第4期6卷 359-366页

作者： Daisuke Shiode Maika Shiozawa fuxiang Hu Tadashi Tokai Yoshio Hirai Tokyo University of Marine Science and Technology MinatoTokyo108-8477Japan NITTO SEIMO Co. LTD.MinatoTokyo105-0004Japan

This study investigated a newly developed soft-type turtle releasing device(Soft-TRD)for *** setnet fish chambers(bag nets)are open at the sea surface,while others are closed(with ceiling netting)and *** turtles that stray into submerged bag nets often drown because the ceiling netting prevents them from swimming up to the surface to *** Soft-TRD has a slit that functions as an escape outlet at the center of a 2 m×2 m *** escape slit remains closed,due to the buoyancy of a float attached at each end of the slit,and prevents fish from getting *** can push the escape slit upward,which opens and allows the turtles to *** decide the optimum design of the Soft-TRD,a turtle releasing trial was conducted in an outdoor water *** loggerhead turtles(Caretta caretta)(standard carapace length(SCl):67.1-72.8 cm)and five green turtles(Chelonia mydas)(SCl:42.4-63.4 cm)were used for the trial.A single turtle was placed into the experimental bag net where the Soft-TRD(six models in total)was mounted at the center part of the ceiling,and its behavior was *** turtles successfully escaped the model with a 150 cm length escape slit,10 cm overlaying width,and a 4 kgf buoyancy float at each *** escape slit immediately closed after the turtles escaped.A sea trial(same model)was also performed using a submerged bag net(30×10×10 m)for two *** 90%(seven of the eight)of the entrapped loggerhead turtles successfully escaped out through the *** was not interrupted by the introduction of this *** use of the Soft-TRD would be helpful in releasing sea turtles from the setnets and contribute to sea turtle conservation efforts.

关键词： Bycatch Push-up Setnet Soft-TRD Turtle releasing device Turtle releasing system

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齿轮-齿条传动横向型芯旋转脱螺纹压铸模

特种铸造及有色合金 2007年第7期27卷 532-533页

作者：田福祥青岛理工大学机械学院

论述了齿轮-齿条传动横向型芯旋转脱螺纹压铸模结构特点和工作原理。该模具一模两腔。利用开模力,通过齿轮-齿条传动,使横向型芯旋转脱螺纹。齿条设置在压铸机型板之外,因此齿条长度不受模具厚度的限制,简化了模具结构,减小了模具体积... 详细信息

论述了齿轮-齿条传动横向型芯旋转脱螺纹压铸模结构特点和工作原理。该模具一模两腔。利用开模力,通过齿轮-齿条传动,使横向型芯旋转脱螺纹。齿条设置在压铸机型板之外,因此齿条长度不受模具厚度的限制,简化了模具结构,减小了模具体积。模具结构紧凑,工作可靠,操作方便,生产效率高,生产的铸件精度高。

关键词：自动脱螺纹压铸模齿轮-齿条机构旋转型芯

Template-directed Synthesis of Three Metal Oxalates via 4-Connected Building Units

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Chemical Research in Chinese Universities 2014年第6期30卷 889-893页

作者： TIAN Ruijing WANG fuxiang DU Chunyu FENG lijuan lIU Ying ZHANG Cailing PAN Qinhe Key Study Center of the National Ministry of Education for Tropical Resources Utilization Department of Materials and Chemical Engineering Hainan University Haikou 570228 P. R. China State Key laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Changehun 130012 P. R. China

Three novel compounds, [Co（en）3]2[Zr2（C2O4）7]·2H20（HNU-2, en=ethylenediamine）, [Co（NH3）6]· [Ce（CzO4）3（H2O）]·H2O（HNU-3） and [Co（dien）2][Gd（C2On）3]·0.75H2O（HNU-4, dien=dethylenetriamine） were hydro- thermal synthesized based on the templates of [Co（en）3]C13, [C0（NH3）6]C13 and [Co（dien）2]C13, respectively. The Zr4＋ Ce3＋ and Gd3＋ cations are all coordinated by four oxalates to form [M（C2O4）n（H2O）n]m （M=Zr, Ce or Gd; n=0 or 1; m=4 or 5）, which are similar to [In（C2O4）4]5- in NKB-1, and can be regarded as 4-connected building units. The [M（C2O4）a（H2O）n]m units are connected via sharing the bis-bidentate bridging oxalate ligands to form binuclears in HNU-2 and 1D ＂zigzag＂ chains in HNU-3 and HNU-4. cular building units to design 3D open frameworks with It is suggested that these compounds could be used as mole- zeolite topologies.

关键词： Coordination polymer Template-directed synthesis Metal oxalate

Total pollution effect of urban surface runoff

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Journal of Environmental Sciences 2009年第9期21卷 1186-1193页

作者： lUO Hongbing lUO lin HUANG Gu lIU Ping lI Jingxian HU Sheng WANG fuxiang XU Rui HUANG Xiaoxue State Key laboratory of Hydraulics and Mountain River Engineering College of Architecture and Environment Sichuan University Chengdu 610065 China College of Urban and Rural Construction Sichuan Agricultural University Du Jiangyan 611830 China. China Urban Construction Design & Research Institute Beijing 100029 China Suzhou University of Science and Technology Suzhou 215011 China

For pollution research with regard to urban surface runoff, most sampling strategies to date have focused on differences in land usage. With single land-use sampling, total surface runoff pollution effect cannot be evaluated unless every land usage spot is monitored. Through a new sampling strategy known as mixed stormwater sampling for a street community at discharge outlet adjacent to river, this study assessed the total urban surface runoff pollution effect caused by a variety of land uses and the pollutants washed off from the rain pipe system in the Futian River watershed in Shenzhen City of China. The water quality monitoring indices were COD （chemical oxygen demand）, TSS （total suspend solid）, TP （total phosphorus）, TN （total nitrogen） and BOD （biochemical oxygen demand）. The sums of total pollution loads discharged into the river for the four indices of COD, TSS, TN, and TP over all seven rainfall events were very different. The mathematical model for simulating total pollution loads was established from discharge outlet mixed stormwater sampling of total pollution loads on the basis of four parameters： rainfall intensity, total land area, impervious land area, and pervious land area. In order to treat surface runoff pollution, the values of MFF30 （mass first flush ratio） and FF30 （first 30% of runoff volume） can be considered as split-flow control criteria to obtain more effective and economical design of structural BMPs （best management practices） facilities.

关键词： total pollution effect mixed stormwater sampling street community pollution loads split-out flow control

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大螺旋角螺杆脱螺纹压铸模

特种铸造及有色合金 2007年第3期27卷 197-198页

作者：田福祥青岛理工大学机械学院

铸件螺纹脱模是压铸模设计的难点之一。自动旋转脱螺纹一般采用齿轮-齿条机构或液压-齿轮机构,大螺旋角螺杆脱螺纹机构则是一种新机构。该机构利用压铸机开模为螺纹型芯旋转脱模提供动力,通过大螺旋角螺杆机构将压铸机开模的直线运动,... 详细信息

铸件螺纹脱模是压铸模设计的难点之一。自动旋转脱螺纹一般采用齿轮-齿条机构或液压-齿轮机构,大螺旋角螺杆脱螺纹机构则是一种新机构。该机构利用压铸机开模为螺纹型芯旋转脱模提供动力,通过大螺旋角螺杆机构将压铸机开模的直线运动,转变为螺纹型芯旋转运动,实现螺纹铸件自动脱模。无需外接脱螺纹动力装置,节省模具成本,提高了铸件生产的可靠性。

关键词：压铸模大螺旋角螺杆螺纹型芯旋转脱螺纹

Metal-seed assistant photodeposition of platinum over Ta_(3)N_(5) photocatalyst for promoted solar hydrogen production under visible light

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Journal of Energy Chemistry 2021年第4期30卷 444-448页

作者： Juhong lian Deng li Yu Qi Nengcong Yang Rui Zhang Tengfeng Xie Naijia Guan landong li fuxiang Zhang School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China State Key laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023LiaoningChina College of Chemistry Jilin UniversityChangchun 130012JilinChina

Cocatalysts play a vital role in accelerating the reaction kinetics and improving the charge separation of photocatalysts for solar hydrogen *** promotion of the photocatalytic activity largely relies on the loading approach of the ***,we introduce a metal-seed assistant photodeposition approach to load the hydrogen evolution cocatalyst of platinum onto the surface of Ta_(3)N_(5) photocatalyst,which exhibits about 3.6 times of higher photocatalytic proton reduction activity with respect to the corresponding impregnation or photodeposition *** on our characterizations,the increscent contact area of the cocatalyst/semiconductor interface with metal-seed assistant photodeposition method is proposed to be responsible for the promoted charge separation as well as enhanced photocatalytic H2 evolution *** is interesting to note that this innovative deposition strategy can be easily extended to loading of platinum cocatalyst with other noble or non-noble metal seeds for promoted activities,demonstrating its good *** work may provide an alternative way of depositing cocatalyst for better photocatalytic performances.

关键词： Tantalum nitride Cocatalyst Charge separation Contact interface Metal-seed assistant photodeposition Solar hydrogen production