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Factors Determining the Abundance of Red Swamp Crayfish(Procambarus clarkii) in a Large Lake Connected to the Yangzte River

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Journal of Resources and Ecology 2022年第1期13卷 61-67页

作者： WANG Yuyu tan wenzhuo LI Bin XIAO Yayu GUO Min LU Xiuyuan LEI Guangchun School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China Hubei Chenhu Wetland Nature Reserve Administration Wuhan 430100China

Invasive species and habitat degradation are the main reasons for freshwater biodiversity loss. Reports on the habitat degradation and invasion ecology of Red Swamp crayfish(Procambarus clarkii) are few, although it is one of the most devastating invasive species in freshwater ecosystems. Based on a three-year investigation during 2017-2019 in West Dongting Lake, this study used Principal Component Analysis(PCA), Generalized Linear Model(GLM) and Bayesian model to analyze the relationships of P. clarkii stocks and environment factors in natural and modified wetlands. The results showed that the abundance of P. clarkii was positively correlated with total nitrogen, total phosphorus, water temperature, pH, water depth, and water transparency;while it was negatively correlated with dissolved oxygen and redox potential. The difference between P. clarkii stocks in natural and modified wetlands was nonsignificant. The P. clarkii stock decreased yearly, as levels in both 2018 and 2019 were significantly lower than in 2017. We concluded that inter-annual variation of the hydrological regime plays an important role in P. clarkii dynamics, and thus it is of great importance to ensure that the water level and flow velocity in summer to control the invasive P. clarkii.

关键词： Red Swamp Crayfish(P.clarkii) abundance temporal variation habitat modification floodplain wetland

机电类高技能人才教学过程中的教师专业素养提升策略

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现代制造技术与装备 2020年第4期56卷 219-219,221页

作者：谈文卓江苏省宜兴中等专业学校无锡214200

主要阐述机电类高技能人才教学过程中教师专业素养提升的重要意义,进一步提出了机电类高技能人才教学过程中教师专业素养提升的有效策略,希望能够提供参考。

关键词：机电类高技能人才教师专业素养

西洞庭湖天然和人工改造湿地中克氏原螯虾(Procambarus clarkii)与日本沼虾(Macrobrachium nipponense)的食性差异

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湖泊科学 2022年第1期34卷 184-193页

作者：谭文卓李斌王玉玉肖雅渝陆修远杨梨萍雷光春蔡教慧何木盈北京林业大学生态与自然保护学院北京100083 湖南洞庭湖湿地生态系统国家野外科学观测研究站常德415923 西洞庭湖国家级自然保护区管理局常德415923

栖息地退化和外来物种入侵都是淡水生态系统中的主要威胁因素,因此,量化不同人类活动干扰强度下外来入侵生物和本土生物的食性组成差异,对于明确种间竞争强度,制定适合的管理对策至关重要.本研究应用碳、氮稳定同位素分析技术,比较了长... 详细信息

栖息地退化和外来物种入侵都是淡水生态系统中的主要威胁因素,因此,量化不同人类活动干扰强度下外来入侵生物和本土生物的食性组成差异,对于明确种间竞争强度,制定适合的管理对策至关重要.本研究应用碳、氮稳定同位素分析技术,比较了长江中下游西洞庭湖湿地受人类活动干扰程度不同的天然湿地和人工改造湿地中的入侵种克氏原螯虾(Procambarus clarkii)与本土种日本沼虾(Macrobrachium nipponense)的食性组成及差异.2017年8月8-18日在西洞庭湖区不同人类干扰强度的栖息地中采集了两种消费者和5种潜在食物来源样品,共计91个.测定碳氮稳定同位素含量后,使用贝叶斯混合模型,估算不同食物来源对消费者的贡献.研究发现:在两种栖息地中克氏原螯虾与日本沼虾食性均有重叠,且在改造湿地中重叠度更大.与克氏原螯虾相比,日本沼虾消费更多的动物性食物.与天然湿地相比,在改造湿地中由于克氏原螯虾数量更多,与本土种竞争食物资源,克氏原螯虾和日本沼虾δ^(13) C比值都显著升高,食性组成均发生了变化,植物性食物来源比重增加.由于食性改变,在改造湿地中仅日本沼虾δ^(15) N比值显著下降,克氏原螯虾在两种栖息地中δ^(15) N比值无显著变化.本研究证明,随着人类干扰强度增大,受干扰湿地中外来入侵生物对本土生物的影响增大.

关键词：贝叶斯混合模型稳定同位素生物入侵营养关系西洞庭湖

Performance enhancement of perovskite solar cells:surface is the key

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Science China Materials 2024年第1期67卷 375-376页

作者： wenzhuo Li Zhijun Ning School of Physical Science and Technology Shanghaitech UniversityShanghai 201210China

Metal halide perovskite solar cells(PSCs)stand out as one of the most promising contenders among photovoltaic technologies for the *** the past decade,PSCs with high power conversion efficiency(PCE)predominantly adopted the normal(ni-p)device ***,a common p-type organic small molecule,Spiro-OMe TAD,which is widely employed at the top layer of n-i-p devices[1],faces issues such as susceptibility to water absorption and poor thermal stability.

关键词： structure stability perovskite

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Qualitative Spatial Reasoning with Oriented Point Relation in 3D Space

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Chinese Journal of Electronics 2019年第2期28卷 325-330页

作者： WANG Shengsheng DONG Ruyi SONG wenzhuo WANG Chuangfeng College of Computer Science and Technology Jilin University Key Laboratory of Symbolic Computing and Knowledge Engineering of Ministry of Education Jilin Vocational College of Industry and Technology

Among qualitative direction relation models, Oriented point relation algebra（OPRA;） is a remarkable model for robot navigation with uncertain direction information. It has great advantages in providing powerful expressions with very limited information compared with other point-based spatial relation *** original OPRAm is defined in 2D space, and its model and reasoning algorithm are found not applicable in 3D space. We proposed a novel direction relation model named OPRA3D;to extend the original OPRAm to 3D space,and presented a new reasoning algorithm on Oriented point relation algebra in three dimension（OPRA3D;）. A further study was carried out for composition reasoning on OPRA3D;. The proposed reasoning algorithm will deduce new information which cannot be directly detected by hardware. The experiment showed the algorithm had some practical significance, it can be applied to the Unmanned aerial vehicle（UAV） navigation and similar scenarios.

关键词： Qualitative spatial reasoning Oriented point relation algebra in three dimension(OPRA3Dm) Composition reasoning Unmanned aerial vehicle navigation

Emerging Devices Based on Two-Dimensional Monolayer Materials for Energy Harvesting

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Research 2019年第1期2019卷 283-298页

作者： Feng Ru Fan wenzhuo Wu School of Industrial Engineering Purdue UniversityWest LafayetteIndiana 47907USA Flex Laboratory Purdue UniversityWest LafayetteIndiana 47907USA Birck Nanotechnology Center Purdue UniversityWest LafayetteIndiana 47907USA

Two-dimensional(2-D)materials of atomic thickness have attracted considerable interest due to their excellent electrical,optoelectronic,mechanical,and thermal properties,which make them attractive for electronic devices,sensors,and energy *** the otherwise wasted energy from the ambient environment into electrical power holds promise to address the emerging energy needs,in particular for the portable and wearable *** versatile properties of 2-D materials together with their atomically thin body create diverse possibilities for the conversion of ambient *** present review focuses on the recent key advances in emerging energy-harvesting devices based on monolayer 2-D materials through various mechanisms such as photovoltaic,thermoelectric,piezoelectric,triboelectric,and hydrovoltaic devices,as well as progress for harvesting the osmotic pressure and Wi-Fi wireless *** representative achievements regarding the monolayer heterostructures and hybrid devices are also ***,we provide a discussion of the challenges and opportunities for 2-D monolayer material-based energy-harvesting devices in the development of self-powered electronics and wearable technologies.

关键词： harvesting ambient versatile

Piezotronics and piezo-phototronics: fundamentals and applications

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National Science Review 2014年第1期1卷 62-90页

作者： ZhongLin Wang wenzhuo Wu School of Materials Science and Engineering Georgia Institute of Technology Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences

Technology advancement that can provide new solutions and enable augmented capabilities to complementary metal–oxide–semiconductor(CMOS)-based technology,such as active and adaptive interaction between machine and human/ambient,is highly *** nanodevices and integrated systems exhibit potential in achieving these application *** the gating efect of piezopotential over carrier behaviors in piezoelectric semiconductor materials under externally applied deformation,the piezoelectric and semiconducting properties together with optoelectronic excitation processes can be coupled in these materials for the investigation of novel fundamental physics and the implementation of unprecedented *** is created by the strain-induced ionic polarization in the piezoelectric semiconducting *** deal with the devices fabricated using the piezopotential as a‘gate’voltage to tune/control charge-carrier transport across the metal–semiconductor contact or the p–n ***-phototronics is to use the piezopotential for controlling the carrier generation,transport,separation and/or recombination for improving the performance of optoelectronic *** review intends to provide an overview of the rapid progress in the emerging ields of piezotronics and *** concepts and results presented in this review show promises for implementing novel nano-electromechanical devices and integrating with micro/nano-electromechanical system technology to achieve augmented functionalities to the state-of-the-art CMOS technology that may ind applications in the human–machine interfacing,active lexible/stretchable electronics,sensing,energy harvesting,biomedical diagnosis/therapy,and prosthetics.

关键词： piezotronic efect piezo-phototronic efect piezopotential piezotronics MEMS sensors

ZnMn_(3)O_(7):A New Layered Cathode Material for Fast-Charging Zinc-Ion Batteries

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Chinese Journal of Structural Chemistry 2022年第5期41卷 85-92页

作者： Ruitao Sun Qin Liu wenzhuo Deng CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsState Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100039China

Low-cost and high-energy-density manganese-based compounds are promising cathode materials for rechargeable aqueous zinc-ion batteries(AZIBs),however,they often experience cycling instability issues and inferior rate ***,we report a new layered manganese-based cathode material,ZnMn_(3)O_(7)(ZMO),which possesses a large interlayer spacing of 4.8Åand allows the intercalation of~1.23 Zn-ions per formula unit(corresponding to a capacity of~170 mAh/g).Importantly,ZMO exhibits good cycling stability(72.9%capacity retention over 400 cycles),ultrafast-charging capability(73%state of charge in 1.5 min),and an ultrahigh power density(3510 W/kg at 88 Wh/kg).Through kinetic characterization,the favorable diffusion of ions and the dominant capacitor contribution are found to be conducive to the achievement of superior fast charging ***,the charge storage mechanism is revealed by ex-situ XRD and ex-situ *** work may shed light on the design of high-performance electrode materials for AZIBs.

关键词： layered structure zinc-manganese oxide cathode zinc-ion battery

Study on Control Technology of Tendon Bionic Driving Robot System

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Journal of Bionic Engineering 2023年第2期20卷 584-597页

作者： Ke Xu wenzhuo Li Chenghao Ji Bing Liu School of Electrical and Control Engineering Shenyang Jianzhu UniversityWusan StreetShenyang110168Liaoning ProvinceChina

Although traditional position-controlled industrial robots can be competent for most assembly tasks,they cannot complete complex tasks that frequently interact with the external *** current research on exoskeleton robots also has problems such as excessive inertia of exoskeleton robots,poor system integration and difficult human–computer interaction *** solve these problems,this paper independently develops a tendon driving robotic system composed of a tendon driving robotic arm and an upper limb exoskeleton,and studies its control ***,the robot system is selected,configured,and ***,the kinematics of the robot is analyzed,and then the dynamics are studied,and the parameter identification experiment of single degree of freedom is ***,the research on zero-force control and impedance control of the robot has effectively improved the robot’s human–machine integration ability,ensured the flexibility and compliance in the process of human–computer *** compliant control problem expands the usage scenarios and application scope of robots and contributes to the realization of complex operations of this group of robots in unstructured environments.

关键词： Tendon bionic drive robot Upper limb exoskeleton robot Dynamic parameter identification Zero force control Impedance control