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论新媒体时代供水企业舆情管理

城镇供水 2024年第3期 73-76页

作者：李响北京市自来水集团缙阳公司北京102100

近年来,随着网络信息化的发展,网络舆情工作形势日趋严峻。在日常供水工作中也开始出现一些诸如“自来水公司统一销售安装净水器具”“供暖水污染自来水”“假冒自来水工作人员上门收费”以及个别用户在网络自媒体发布关于地区“水质有... 详细信息

近年来,随着网络信息化的发展,网络舆情工作形势日趋严峻。在日常供水工作中也开始出现一些诸如“自来水公司统一销售安装净水器具”“供暖水污染自来水”“假冒自来水工作人员上门收费”以及个别用户在网络自媒体发布关于地区“水质有问题”等网络舆情事件,作为宣传工作人员,充分认识新媒体时代舆情应对工作形势任务,掌握舆情处置和舆论引导方法,提高应对本领和工作质效尤为重要。

关键词：新媒体时代网络自媒体舆论引导网络信息化自来水公司净水器供水工作舆情应对

劳动教育融入高校校本课程的价值意蕴与实践逻辑

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湖北开放职业学院学报 2024年第12期37卷 40-41,53页

作者：项丹苏州市职业大学江苏苏州215104

劳动教育是新时代党对教育事业的新要求,具有鲜明的思想性、突出的社会性和显著的实践性特征,将其融入高校校本课程既要“宏观引导”,又要“微观实践”,还要“反馈及时”。要从立德树人角度精准把握劳动教育的地位、价值和目标;从课程... 详细信息

劳动教育是新时代党对教育事业的新要求,具有鲜明的思想性、突出的社会性和显著的实践性特征,将其融入高校校本课程既要“宏观引导”,又要“微观实践”,还要“反馈及时”。要从立德树人角度精准把握劳动教育的地位、价值和目标;从课程设置、教育资源整合、实践活动开展等每个细节进行劳动教育的整体设计;灵活运用文化课的评价机制,使劳动教育做到“有章可循”“有据可查”。

关键词：劳动教育校本课程立德树人五育并举

Gating System Design for a Magnesium Alloy Casting

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Journal of Materials Science & Technology 2008年第1期24卷 93-95页

作者： Zhizhong SUN Henry HU xiang CHEN Qigui wang Wenying YANG Department of Mechanical Automotive ＆ Materials Engineering University of Windsor Windsor Ontario Canada N9B 3P4 Canada Department of Electrical ＆： Computer Engineering University of Windsor Windsor Ontario Canada N9B 3P4 Canada General Motors Corporation Pontiac MI 48340 USA

The gating system of a cylindrical magnesium casting has been designed by using multiple objective optimiza- tion and Taguchi *** filling and solidification processes were simulated by using MAGMASOFT（？）. The simulation results indicate that the gating system design has a significant effect on the quality of magne- sium *** an effort to obtain the optimal design of gating system,the signal-to-noise （S/N） ratio was used to analyze the effect of various gating designs on cavity filling and casting quality by using a weighting method based on the design of an orthogonal *** gating system parameters,namely,ingate height, ingate width,runner height,runner width,were optimized with a consideration of multiple objective criteria including filling velocity,shrinkage porosity and product yield.

关键词： Gating system Magnesium casting Optimization Taguchi method

Optimization Study on Expansion Energy Used Air-Powered Vehicle with Pneumatic-Hydraulic Transmission

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Chinese Journal of Mechanical Engineering 2018年第1期31卷 220-229页

作者： xiang-Heng Fu Mao-Lin Cai Yi-Xuan wang Yan Shi School of Automation Science and Electrical Engineering Beihang University The State Key Laboratory of Fluid Power & Mechatronic Systems Zhejiang University

Pneumatic-hydraulic transmission has been developed for years. However, its dynamic properties are not good enough for application. In this paper, in order to increase the output characteristics, a late-model air-powered vehicle using expansion energy is proposed which can boost energy through a pneumatic-hydraulic transmission. The dynamic characteristics of the air-powered vehicle is modeled and verified by conducting experiment. In addition,the influence of the key parameters of the air-powered vehicle is researched for the optimization of the system performance. Through the results, the author got the conclusion that, firstly, comparison of the results of model and experiment proves the built model to be effective; secondly, input air pressure should be set according to the request of the practical loads, and range of 0.65 to 0.75 MPa can be chosen; thirdly, as a key structure parameter of the airpowered vehicle, ratio of the areas is considered to be set to approximate 8; what’s more, a bigger orifice with a limit will promote the system dynamic characteristic property, and the limit is about 3.5 mm; last but not the least, not too farther position of the rings will increase the quality of output dynamic characteristics. This paper can be a reference for system design of air-powered vehicle and dynamic improvement.

关键词： Air-powered vehicle Expansion energy Pneumatic-hydraulic transmission Output dynamic characteristics

Least Square Finite Element Method for Viscous Splitting of Unsteady Incompressible Navier–Stokes Equations

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China Ocean Engineering 2018年第4期32卷 490-500页

作者： SHUI Qing-xiang wang Da-guo HE Zhi-liang HUANG Jin School of Human Settlement and Civil Engineering Xi'an Jiaotong University School of Environmental and Resources Southwest University of Science and Technology

In order to solve unsteady incompressible Navier–Stokes(N–S) equations, a new stabilized finite element method,called the viscous-splitting least square FEM, is proposed. In the model, the N–S equations are split into diffusive and convective parts in each time step. The diffusive part is discretized by the backward difference method in time and discretized by the standard Galerkin method in space. The convective part is a first-order nonlinear *** the linearization of the nonlinear part by Newton’s method, the convective part is also discretized by the backward difference method in time and discretized by least square scheme in space. C0-type element can be used for interpolation of the velocity and pressure in the present model. Driven cavity flow and flow past a circular cylinder are conducted to validate the present model. Numerical results agree with previous numerical results, and the model has high accuracy and can be used to simulate problems with complex geometry.

关键词： unsteady incompressible N–S equations viscous splitting Newton's method least square finite element method driven cavity flow flow past a circular cylinder

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人主动脉血管平滑肌细胞铁死亡模型的建立

华中科技大学学报（医学版） 2024年第4期53卷 427-432页

作者：叶剑楠魏翔冯鑫华中科技大学同济医学院附属同济医院心脏大血管外科武汉430030

目的在人主动脉血管平滑肌细胞(HAVSMCs)中建立铁死亡模型并进行验证。方法主动脉平滑肌细胞来源于在华中科技大学同济医学院附属同济医院心脏大血管外科行心脏移植手术的供体主动脉弓组织,分别使用含Imidazole ketoneerastin(IKE)和胱... 详细信息

目的在人主动脉血管平滑肌细胞(HAVSMCs)中建立铁死亡模型并进行验证。方法主动脉平滑肌细胞来源于在华中科技大学同济医学院附属同济医院心脏大血管外科行心脏移植手术的供体主动脉弓组织,分别使用含Imidazole ketoneerastin(IKE)和胱氨酸缺失(CD)的培养液对HAVSMCs进行铁死亡诱导,并使用Cell Counting Kit-8(CCK-8)试剂盒、人乳酸脱氢酶(LDH)检测试剂盒、细胞流式检测及免疫荧光染色来判断平滑肌细胞的铁死亡模型是否建立成功。结果对HAVSMCs进行铁死亡诱导后,光学显微镜下可观察到细胞出现明显形态学改变,流式细胞学分析显示IKE/CD诱导下碘化丙啶(PI)染色阳性细胞所占比例明显升高;CCK-8和LDH检测结果显示,在IKE/CD诱导下HAVSMCs细胞活力明显降低,细胞损伤率明显增加,而铁死亡抑制剂ferrostatin-1则能逆转铁死亡诱导对细胞的毒性作用;BODIPY-C11细胞流式分析及4-羟基壬烯醛(4-HNE)免疫荧光染色显示,IKE/CD诱导的HAVSMCs中脂质过氧化水平明显上升。结论该研究使用IKE以及胱氨酸缺失培养液成功建立了人主动脉血管平滑肌细胞铁死亡模型,为后续研究提供了实验基础。

关键词：主动脉血管平滑肌细胞铁死亡

A Novel Processing Route for Ni-doped Alumina Composites

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Chinese Journal of Aeronautics 2006年第B12期19卷 55-61页

作者： JING Mao-xiang SHEN xiang-qian ZHOU Jian-xin LI Dong-hong LI wang-xing School of Materials Science and Engineering Jiangsu University Zhenjiang 212013China Zhengzhou Research Institute of Chalco Henan Zhengzhou 450041 China

Alumina-based composites containing 0-15wt% Ni metallic phase were produced by hot press-sintering Ni-coated alumina powders. The Ni-coated alumina powders were prepared by the aqueous heterogeneous precipitation of alumina micro-powders and nickel sulfate salt followed by reduction process. The microstructural features and dispersion of Ni phase in Ni-coated alumina powders and the subsequent alumina-Ni cermets were investigated using scanning electron microscope （SEM）, X-ray diffractometer （XRD）, and transmission electron microscope （TEM）. The relative density of the hot press-sintered composites was measured with the Archimedes＇ method while the fracture strength and the fracture toughness were defined with the three-point bending method and the micro-indentation fracture method. In the formation of alumina-Ni cermets from sintered Ni-coated alumina powders, Ni phase to some extent limits the densification rate and stifles the coarsening and growing process of alumina grains. The Ni phase is found to be located at the interfaces and the triple-joint junctions of alumina grains which results into alteration of the fracture mode of alumina and its increased fracture strength and fracture toughness if compared with monolithic alumina.

关键词： alumina-based composite Ni-coated alumina powder heterogeneous precipitation Ni dispersion

无损检验技术在石油化工特种设备中的应用研究

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模具制造 2024年第10期24卷 175-177页

作者：向斌太科技术有限公司广东深圳518000

石油化工行业特种设备的无损检验技术涵盖了众多领域的专业技术,包括激光全息检测技术、红外线探伤检测技术等等。旨在深入探讨石油化工特种设备无损检验技术的关键影响力及其在实际中的运用,以期推动石油化工行业经济效益的持续增长。

关键词：无损检验技术石油化工特种设备

Effects of delayed mating on the fecundity, fertility and longevity of females of diamondback moth, Plutella xylostella

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Insect Science 2011年第3期18卷 305-310页

作者： xiang-Ping wang Yu-Ling Fang Zhong-Ning Zhang College of Agriculture Yangtze University Jingzhou Hubei Province Chinese Academy of Sciences Beijing China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Beijing China

The effects of delayed mating on the copulation duration, female fertility, fecundity, egg fertility, longevity and the number days alive after mating of females of diamondback moth （DBM）, Plutella xylostella, were studied. When male mating was delayed, the female fertility, fecundity, egg fertility, longevity and number days alive after mating of DBM decreased, and there was a negative correlation between the age of the moth with those variables except copulation duration. When female mating was delayed, the female fertility, fecundity, percent egg fertility and number days alive after mating of DBM also decreased, but the longevity increased, which also showed a negative relationship between the age of the moth with the variables except copulation duration and longevity. When both males and females delayed mating, the female fertility and fecundity decreased; egg fertility was affected marginally, and the longevity of females increased. The moth age was negatively correlated with those variables.

关键词： delayed mating egg fertility fecundity female fertility longevity Plutella xylostella