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Wuhan University Journal of Natural Sciences 2015年第5期20卷 413-420页

作者： JIANG Nan XU Jin MA Jie FAN Yuding ZHOU Yong liu wenzhi ZENG Lingbing Division of Fish Disease Yangtze River Fisheries Research Institute Chinese Academy of Fishery Sciences College of Fisheries Huazhong Agricultural University

Cyprinid herpesvirus II （CyHV-2） infection is identi- fied in cultured gibel carp, Carassius auratus gibelio, with high mortality in China in recent years. Histological pathology includes acute hepatocellular necrosis, splenic necrosis, kidney necrosis, hyperplasia of the secondary lamellae with focal necrosis. Acute necrotic myocarditis and granulocytes are prominent within the cardiac lumen in infected fish. In addition, necrosis is observed in the submucosa and mucosa epithelium of intestinal tract. Edemas are observed in renal glomerulus, submucosa and mucosa epithe- lium of intestinal tract, myocardial cells and neurons. Transmis- sion electron microscopy indicates the cytoplasmic inclusions in splenocytes, glomerulus cells and hematopoietic tissue cells of kidney, epithelial cells of gills and brain cells. The histopathology and ultrastructural pathology in CyHV-2 infected gibel carp are characterized with extensive necrosis and cytoplasmic inclusions in spleen, kidney, gill and brain, which suggests that CyHV-2 may mainly infect the spleen, kidney, gill and brain of fish.

关键词： Cyprinid herpesvirus II gibel carp histopathology ultrastructural pathology necrosis

Beyond biogeographic patterns:Processes shaping the microbial landscape in soils and sediments along the Yangtze River

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mLife 2023年第1期2卷 89-100页

作者： Wenjie Wan Geoffrey MGadd Ji‐Dong Gu wenzhi liu Peng Chen Quanfa Zhang Yuyi Yang Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden Chinese Academy of SciencesWuhanChina Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station Chinese Academy of Sciences&Hubei ProvinceWuhanChina Geomicrobiology Group School of Life SciencesUniversity of DundeeDundeeScotlandUK State Key Laboratory of Heavy Oil Processing State Key Laboratory of Petroleum Pollution ControlChina University of PetroleumBeijingChina Environmental Science and Engineering Group Guangdong Technion‐Israel Institute of TechnologyGuangdongChina

Deciphering biogeographic patterns of microorganisms is important for evaluating the maintenance of microbial diversity with respect to the ecosystem functions they ***,ecological processes shaping distribution patterns of microorganisms across large spatial‐scale watersheds remain largely *** Illumina sequencing and multiple statistical methods,we characterized distribution patterns and maintenance diversity of microorganisms(i.e.,archaea,bacteria,and fungi)in soils and sediments along the Yangtze *** microbial distribution patterns were found between soils and sediments,and microbial community similarity significantly decreased with increasing geographical *** properties showed a larger effect on microbial community composition than geospatial and climatic *** and fungi displayed stronger species replacements and weaker environmental constraints in soils than that in sediments,but opposite for ***,bacteria,and fungi in soils showed broader environmental breadths and stronger phylogenetic signals compared to those in sediments,suggesting stronger environmental *** dominated community assemblies of archaea and fungi in soils and sediments,whereas determinism dominated bacterial community *** results have therefore highlighted distinct microbial distribution patterns and diversity maintenance mechanisms between soils and sediments,and emphasized important roles of species replacement,environmental adaptability,and ecological assembly processes on microbial *** findings are helpful in predicting loss of microbial diversity in the Yangtze River Basin,and might assist the establishment of environmental policies for protecting fragile watersheds.

关键词： environmental breadth environmental constraint phylogenetic signal species replacement stochasticity versus determinism

Dynamic Analysis on the Main Transmission Device of Wooden Ice Cream Sticks Branding Machine

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Journal of Donghua University(English Edition) 2019年第3期36卷 234-238页

作者： liu wenzhi HUANG Mingjun LI Weiguo MA Zhibin College of Aviation Inner Mongolia University of TechnologyHohhot 010051China College of Mechanical Engineering Inner Mongolia University of TechnologyHohhot 010051China Engineering Training Center Inner Mongolia University of TechnologyHohhot 010051China

In order to reduce the labor intensity,improve the production efficiency and enhance the equipment stability and the branding accuracy of the pattern,we have completed a double-row high-efficiency wooden ice cream stick branding machine structural *** rigid-flexible coupling dynamics model is established and the movement and stress of the first-stage chain drive are calculated and *** comparison of the theoretical calculation results shows that the dynamic modeling and the structural design of the equipment are reasonable and the result of dynamic calculation also provides the basis of load data for dynamic strength calculation of structural components.

关键词： ice cream branding machine rigid-flexible coupling multi-body dynamics chain drive transmission

Global blue carbon accumulation in tidal wetlands increases with climate change

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National Science Review 2021年第9期8卷 145-155页

作者： Faming Wang Christian J.Sanders Isaac R.Santos Jianwu Tang Mark Schuerch Matthew L.Kirwan Robert E.Kopp Kai Zhu Xiuzhen Li Jiacan Yuan wenzhi liu Zhian Li Xiaoliang Research Station for Tropical Coastal Ecosystems Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems and the CAS Engineering Laboratory for Ecological Restoration of Island and Coastal Ecosystems South China Botanical Garden Chinese Academy of Sciences Center of Plant Ecology Core Botanical Gardens Chinese Academy of Sciences Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) State Key Laboratory of Estuarine and Coastal Research and Institute of Eco-Chongming East China Normal University National Marine Science Centre School of Environment Science and Engineering Southern Cross University Department of Marine Sciences University of Gothenburg Lincoln Centre for Water and Planetary Health School of Geography University of Lincoln Virginia Institute of Marine Science College of William and Mary Department of Earth and Planetary Sciences and Rutgers Institute of Earth Ocean and Atmospheric Sciences Rutgers University Department of Environmental Studies University of California Department of Atmospheric and Oceanic Sciences Fudan University CAS Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical GardenChinese Academy of Sciences

Coastal tidal wetlands produce and accumulate significant amounts of organic carbon(C) that help to mitigate climate change. However, previous data limitations have prevented a robust evaluation of the global rates and mechanisms driving C accumulation. Here, we go beyond recent soil C stock estimates to reveal global tidal wetland C accumulation and predict changes under relative sea level rise, temperature and precipitation. We use data from literature study sites and our new observations spanning wide latitudinal gradients and 20 countries. Globally, tidal wetlands accumulate 53.65(95%CI: 48.52–59.01)Tg C yr-1, which is ～30% of the organic C buried on the ocean floor. Modeling based on current climatic drivers and under projected emissions scenarios revealed a net increase in the global C accumulation by2100. This rapid increase is driven by sea level rise in tidal marshes, and higher temperature and precipitation in mangroves. Countries with large areas of coastal wetlands, like Indonesia and Mexico, are more susceptible to tidal wetland C losses under climate change, while regions such as Australia, Brazil, the USA and China will experience a significant C accumulation increase under all projected scenarios.

关键词： coastal wetlands blue C C burial rate global change

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Indu-Bala乘积图的广义距离谱

哈尔滨工程大学学报 2020年第9期41卷 1366-1370页

作者：卢鹏丽刘文智兰州理工大学计算机与通信学院甘肃兰州730050

为了完善组合图的距离谱理论,减少图谱的计算复杂度,本文依据矩阵论和图论相关知识,计算了Indu-Bala乘积图G1▽G2的广义距离谱,进而得到其距离拉普拉斯谱和距离无符号拉普拉斯谱;由所得谱证明了一类距离(无符号)拉普拉斯整谱图Kn▽Kn+1... 详细信息

为了完善组合图的距离谱理论,减少图谱的计算复杂度,本文依据矩阵论和图论相关知识,计算了Indu-Bala乘积图G1▽G2的广义距离谱,进而得到其距离拉普拉斯谱和距离无符号拉普拉斯谱;由所得谱证明了一类距离(无符号)拉普拉斯整谱图Kn▽Kn+1;作为应用,得到了一类特殊图Kn▽Kn+1的距离(无符号)拉普拉斯谱能量。

关键词：图论距离(无符号)拉普拉斯矩阵广义距离矩阵组合图广义距离谱距离(无符号)拉普拉斯谱整谱图谱能量

网络视角下高速列车部件维修关系网络复杂性研究

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中国铁道科学 2013年第3期34卷 105-108页

作者：宗刚张超刘文芝北京工业大学经济与管理学院北京100124 中国铁道科学研究院运输及经济研究所北京100081

采用复杂网络理论和方法,以CRH3型动车组为例,通过构建我国高速列车部件之间的维修关系网络,计算和分析该网络的节点平均度、平均路径长度、网络密度及网络集聚系数,从而揭示该网络的拓扑特征。研究结果表明:CRH3型动车组部件维修关系... 详细信息

采用复杂网络理论和方法,以CRH3型动车组为例,通过构建我国高速列车部件之间的维修关系网络,计算和分析该网络的节点平均度、平均路径长度、网络密度及网络集聚系数,从而揭示该网络的拓扑特征。研究结果表明:CRH3型动车组部件维修关系网络的平均路径长度较短,网络密度较大,且节点度的分布服从指数分布,是一个小世界网络;为利于高速列车投入运营后的维修资源分配和维修策略制定以及降低维修费用,在高速列车设计阶段应该考虑降低高速列车维修时部件间的依赖关系;对于节点度较高或是节点集聚系数较大且影响到列车安全运行的部件,应加大维修资源的分配力度。

关键词：高速列车部件维修关系网络复杂网络维修策略

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基于时域仿真法的断续铣削颤振预测

机械工程学报 2021年第3期57卷 98-106页

作者：陈云侯亮刘文志卜祥建厦门大学机电工程系厦门361102 机械科学研究总院海西(福建)分院有限公司三明365000

颤振是影响铣削加工表面质量和限制切削效率的重要原因,准确获取稳定性叶瓣图是避免颤振的有效途径。精加工铣削常使用小径向切深/刀具直径比,产生过小的实时切削厚度,刀具容易脱离工件,造成显著非线性因素;过小的径向切深/刀具直径比... 详细信息

颤振是影响铣削加工表面质量和限制切削效率的重要原因,准确获取稳定性叶瓣图是避免颤振的有效途径。精加工铣削常使用小径向切深/刀具直径比,产生过小的实时切削厚度,刀具容易脱离工件,造成显著非线性因素;过小的径向切深/刀具直径比也导致铣削加工高度断续。因此,常用的圆弧切削厚度已不能近似实际切削厚度,进而影响断续铣削加工颤振预测。采用考虑实际切削厚度的时域仿真法预测断续铣削加工颤振稳定性。该方法使用刀具实际运动轨迹计算切削厚度,并综合考虑了铣削过程中刀具和工件的动力学特性对切削厚度的影响。提出基于相关系数的无量纲颤振判定准则,并用于铣削仿真结果加工状态的判定。通过钛合金Ti6Al4V铣削验证试验结果,所提出的时域仿真法能准确预测小径向切深/刀具直径比所致的断续铣削加工稳定性叶瓣图,为高断续铣削加工无颤振加工参数选择提供了一种有效方法。

关键词：铣削颤振动态切削厚度时域仿真切削力

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数控卧式铣床滑枕变形有限元分析及补偿技术

制造技术与机床 2008年第1期 66-68页

作者：刘文志齐齐哈尔二机床(集团)三明制造有限公司福建三明365009

针对机床滑枕自重弯曲变形问题,从有限元分析入手,基于Fanuc-0i-MC系统采用油压缸-拉杆补偿系统的方法,保证了在机床全行程内的精度,经实践证明,是一种精度高、经济而有效的方法。

关键词：数控卧式铣床方滑枕有限元分析变形补偿

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ISO9000族标准在我国家具行业的应用

林产工业 2001年第1期28卷 44-46页

作者：刘文智北京市家具公司北京100096

前言 ISO9000族标准的产生和发展全球经济的发展,要求贸易中质量管理和质量保证要有共同的语言和准则,作为质量评价所依据的基础,为适应全球性质量体系认证的多边互认,减少技术壁垒和贸易壁垒的需要,国际标准化组织(ISO)在总结世界各国... 详细信息

前言 ISO9000族标准的产生和发展全球经济的发展,要求贸易中质量管理和质量保证要有共同的语言和准则,作为质量评价所依据的基础,为适应全球性质量体系认证的多边互认,减少技术壁垒和贸易壁垒的需要,国际标准化组织(ISO)在总结世界各国,特别是工业发达国家质量管理的基础上,协调各国质量标准的差异,于1987年发布ISO9000《质量管理和质量

关键词： ISO9000族标准中国家具工业应用

建设项目全过程造价咨询服务的重点及实施效果研究

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建筑经济 2021年第9期42卷 42-46页

作者：刘文智河北环境工程学院河北秦皇岛066102

相较于传统的造价管理模式,全过程造价咨询可根据每个项目的特点,制定不同的造价咨询方案和服务,对建设项目进行整体调控,提高项目的风险管理效果。阐述项目全过程造价咨询服务思路和工作重点。结合实际案例,介绍全过程造价咨询在项目... 详细信息

相较于传统的造价管理模式,全过程造价咨询可根据每个项目的特点,制定不同的造价咨询方案和服务,对建设项目进行整体调控,提高项目的风险管理效果。阐述项目全过程造价咨询服务思路和工作重点。结合实际案例,介绍全过程造价咨询在项目决策阶段、设计阶段、招投标阶段、施工阶段和竣工结算阶段的应用,得出全过程造价咨询在项目管控成本、缩短工期和避免三超方面具有明显的实施效果。

关键词：建设项目全过程造价咨询服务思路实施效果