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“读后续写+同伴互评”对英语写作的促写影响

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现代英语 2024年第8期 59-62页

作者：赵仕君张爱萍侯丽娟杜青青兰州理工大学甘肃兰州730050

王初明教授提出的续理论认为“续”是激活所有促学语言的主要因素和有效提高语言学习和教学效率的新途径。文章在英语专业写作课程平行班级中设置“读后续写+同伴互评”为实验组,设置“话题作文+同伴互评”为对照组,以此探索“读后续写... 详细信息

王初明教授提出的续理论认为“续”是激活所有促学语言的主要因素和有效提高语言学习和教学效率的新途径。文章在英语专业写作课程平行班级中设置“读后续写+同伴互评”为实验组,设置“话题作文+同伴互评”为对照组,以此探索“读后续写+同伴互评”写作教学模式的促写效果。实验数据中前测、后测、学期末测试成绩变化表明,二者在中长期都有明显的促写效果,“读后续写+同伴互评”模式的促写效果优于“话题作文+同伴互评”模式。

关键词：读后续写同伴互评英语写作

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Φ760x2300输送带压延设备研制

橡塑技术与装备 2024年第11期50卷 39-43页

作者：陶丽梅高巍刘丽李明昊杨洋赵石军大连橡胶塑料机械有限公司辽宁大连116033

本文简单介绍了输送带压延设备生产工艺上应用,详细介绍新研制的Φ760×2300压延设备在线成型分层带工艺流程、覆盖胶工艺流程、工作原理、主要技术参数和结构特点。并对各区段张力控制、电气控制等作了简单的分析。

关键词：输送带压延分层带液压调距定中纠偏张力传感器张力控制

“STEM+”驱动的大气探测课程融合式教学设计

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军事高等教育研究 2024年第2期47卷 116-120页

作者：李书磊刘西川赵世军刘磊曾庆伟国防科技大学气象海洋学院湖南长沙410073

“STEM+”教育理念将科学、技术、工程、数学以及课程思政有机融合,有助于促进学生跨学科思维和创新能力的培养。为构建满足新时代气象服务保障需求的复合型人才培养体系,提出以“STEM+”驱动的大气探测课程教学设计改革,建立知识学习... 详细信息

“STEM+”教育理念将科学、技术、工程、数学以及课程思政有机融合,有助于促进学生跨学科思维和创新能力的培养。为构建满足新时代气象服务保障需求的复合型人才培养体系,提出以“STEM+”驱动的大气探测课程教学设计改革,建立知识学习与科学思维、工程素养、专业自信培养为一体的融合式教学过程。以“地基可见光测云”一课为例,按照问题界定、解决方案、模型构建、误差分析与模型改进、评价与总结等工程设计环节,将知识点按照STEM理念进行重构。同时,挖掘课程思政元素,引导学生形成跨学科的思维方式,坚定热爱气象、献身使命的理想信念,以期为培养大气科学创新型人才作出贡献。

关键词：大气探测 STEM+ 教学设计

A Vertex-Centered Arbitrary Lagrangian-Eulerian Finite Volume Method with Sub-Cells for Two-Dimensional Compressible Flow

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Advances in Applied Mathematics and Mechanics 2024年第1期16卷 181-207页

作者： Xiaolong zhao Xijun Yu Zupeng Jia shijun Zou Meilan Qiu School of Mathematics and Statistics Zhengzhou UniversityZhengzhouHenan 450001China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing 100088China School of Mathematical Sciences Capital Normal UniversityBeijing 100048China School of Mathematics and Statistics Huizhou UniversityHuizhouGuangdong 516007China Institute of Applied Physics and Computational Mathematics Beijing 100088China

In this paper,we present a new vertex-centered arbitrary LagrangianEulerian(ALE)finite volume scheme for two-dimensional compressible *** our scheme,the momentum equation is discretized on the vertex control volume,while the mass equation and the energy equation are discretized on the sub-cells which are included in the vertex control *** attain the average of the fluid velocity on the vertex control volume directly by solving the conservation *** we can obtain the fluid velocity at vertex with the reconstructed polynomial of the *** fluid velocity is chosen as the mesh velocity,which makes the mesh move in a Lagrangian *** WENO(Weighted Essentially Non-Oscillatory)reconstructions for the density(the total energy)and the velocity are used to make our scheme achieve the anticipated *** with the general vertexcentered schemes,our scheme with the new approach for the space discretization can simulate some multi-material flows which do not involve large *** addition,our scheme has good robustness,and some numerical examples are presented to demonstrate the anticipated accuracy and the good properties of our scheme.

关键词： Vertex-centered arbitrary Lagrangian-Eulerian sub-cells multi-material flows

Reoxidation of liquid steel and evolution of inclusions during protective atmosphere electroslag remelting of Ce-containing heat-resistant stainless steel

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Journal of Iron and Steel Research International 2024年第8期31卷 1923-1935页

作者： Yu zhao Cheng-bin Shi shijun Wang Peng Ren Jing Li State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing(USTB)Beijing 100083China

The evolution of Ce-containing inclusions and its correlation with the reoxidation of liquid steel during protective atmosphere electroslag remelting(ESR)of heat-resistant steel were *** reoxidation of liquid steel took place during the ESR,resulting in the oxygen pickup from 0.0014 to 0.0053 wt.%.The inclusions in the consumable electrode,liquid metal pool and remelted ingot are Ce_(2)O_(2)S and Ce_(2)O,inclusions *** inclusions in the remelted ingot are originated from three ways:(I)the original inclusions from the electrode;(Il)the newly formed Ce_(2)O_(2)S and Ce_(2)O_(3) inclusions in the liquid metal pool by reoxidation remaining still in remelted ingot;(IlI)the newly generated Ce2O2S and Ce_(2)O_(3) inclusions during cooling and solidification of liquid *** relative proportions of Ce_(2)O_(3) inclusions in liquid metal pool and remelted ingot are 41% and 76.5%,*** inclusions ranging from 2 to 5μm in the remelted ingot take up 55%,followed by the inclusions smaller than 2μm(43%of total inclusions).The number proportion of the Ce_(2)0,inclusions in the liquid metal pool which were removed by floating up into slag is 1.96×10-5%.

关键词： Non-metallic inclusion Electroslag remelting Rare earth cerium Reoxidation Inclusion evolution

Studying bona fide SARS-CoV-2 biology in a BSL-2 biosafety environment using a split-virus-genome system

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Science China(Life Sciences) 2022年第9期65卷 1894-1897页

作者： Yingxin Ma Guobin Mao Weishan Yang Guoqiang Wu Guoqiang Li Xiaoying Li Xin Lin Junnan Lu shijun zhao Wei zhao Junbiao Dai Xian-En Zhang CAS Key Laboratory of Quantitative Engineering Biology Guangdong Provincial Key Laboratory of Synthetic Genomics and Shenzhen Key Laboratory of Synthetic GenomicsShenzhen Institute of Synthetic BiologyShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China Faculty of Synthetic Biology Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China National Key Laboratory of Biomacromolecules CAS Center for Biological MacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101China

Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARSCoV-2)was identified as the pathogen causing the coronavirus disease(COVID-19),which sometimes resulted in fatal pneumonia(Hu et al.,2021).SARS-CoV-2 is a biosafety level 3(BSL-3)pathogen,and the requirement for high containment conditions is a bottleneck for basic research on viral *** help general researchers who wish to study SARS-CoV-2 but do not have access to a BSL-3 facility,a system that(1)can mimic the real life cycle of the virus;(2)allows easy genetic manipulation;and(3)shows high biosafety in BSL-2 laboratory is required.

关键词： al. acute respiratory

The effect of Laves phase on heavy-ion radiation response of Nb-containing FeCrAl alloy for accident-tolerant fuel cladding

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Fundamental Research 2022年第3期2卷 437-446页

作者： Hang Xu Shuyao Si Yipeng Li Xiangbing Liu Wenqing Li Changzhong Jiang shijun zhao Hui Wang Xiangheng Xiao Department of Physics and Hubei Nuclear Solid Physics Key Laboratory Wuhan UniversityWuhan 430072China Institute of Science and Technology of The 404 Company Limited China National Nuclear CorporationJiayuguan 735100China College of Energy Xiamen UniversityXiamen 361102China Suzhou Nuclear Power Research Institute Suzhou 215004China Department of Mechanical Engineering City University of Hong KongHong Kong 999077China Science and Technology Reactor Fuel and Material Laboratory Nuclear Power Institute ChinaChengdu 610041China

As a promising candidate material for the accident tolerant fuel cladding in light water reactors,the Nb-containing FeCrAl alloy has shown outstanding out-of-pile service performance due to the Laves phase *** this work,the radiation response in FeCrAl alloys with gradient Nb content under heavy ion radiation has been *** focus is on the effect of the Laves phase on irradiation-induced defects and *** found that the phase boundary between the matrix and Laves phase can play a critical role in capturing radiation defects,as verified by in-situ heavy-ion radiation experiments and molecular dynamic ***,the evolution of Laves phase under radiation is ***-induced amorphization and segregations observed at high radiation doses will deepen the fundamental understanding of the stability of Laves phases in the radiation environment.

关键词： Accident-tolerant fuel cladding FeCrAl Laves phase In-situ radiation Segregation

P2Y12受体介导小胶质细胞在肌萎缩侧索硬化疾病中的作用

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脑与神经疾病杂志 2024年第2期32卷 71-76页

作者：陈超庞江霞王宝军孙明英赵世君李月春郝喜娃包头市中心医院神经内科内蒙古014040 包头市中心医院神经病学院士专家工作站内蒙古014040 内蒙古自治区神经系统疾病临床医学研究中心

目的探索分析P2Y12受体介导小胶质细胞在肌萎缩侧索硬化(ALS)疾病发生发展中的作用。方法应用SOD1-G93A转基因小鼠,通过转棒实验、Western blot方法及免疫荧光双标染色,观察SOD1-G93A转基因小鼠在症状前期、症状中期、终末期及对照组... 详细信息

目的探索分析P2Y12受体介导小胶质细胞在肌萎缩侧索硬化(ALS)疾病发生发展中的作用。方法应用SOD1-G93A转基因小鼠,通过转棒实验、Western blot方法及免疫荧光双标染色,观察SOD1-G93A转基因小鼠在症状前期、症状中期、终末期及对照组小鼠运动功能、皮质与腰髓P2Y12受体及小胶质细胞特异性标记物IBA1表达的变化情况。结果 SOD1-G93A转基因小鼠随病程进展运动功能逐渐下降;腰髓P2Y12受体随病程进展有逐渐降低趋势,与对照组比较,终末期P2Y12受体表达明显减低(P<0.05),皮质各期变化不明显;腰髓IBA1受体随病程进展有逐渐升高趋势,与对照组比较,终末期IBA1表达明显升高(P<0.05),皮质各期变化不明显。结论随SOD1-G93A转基因小鼠病程进展运动功能逐渐降低,腰髓P2Y12受体表达减少,小胶质细胞增生明显,P2Y12受体介导的小胶质细胞活化可能参与了ALS的发生发展。

关键词：肌萎缩侧索硬化转基因小鼠 P2Y12受体小胶质细胞

Mortality outcomes of low-dose computed tomography screening for lung cancer in urban China:a decision analysis and implications for practice

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Chinese Journal of Cancer 2017年第8期36卷 367-379页

作者： Zixing Wang Wei Han Weiwei Zhang Fang Xue Yuyan Wang Yaoda Hu Lei Wang Chunwu Zhou Yao Huang shijun zhao Wei Song Xin Sui Ruihong Shi Jingmei Jiang Institute of Basic Medical Sciences Chinese Academy of Medical Sciences Cancer Hospital Chinese Academy of Medical Sciences Peking Union Medical College Hospital Chinese Academy of Medical Sciences National Institutes for Food and Drug Control State Food and Drug Administration

Background: Mortality outcomes in trials of low-dose computed tomography(CT) screening for lung cancer are inconsistent. This study aimed to evaluate whether CT screening in urban areas of China could reduce lung cancer mortality and to investigate the factors that associate with the screening ***: A decision tree model with three scenarios(low-dose CT screening, chest X-ray screening, and no screening) was developed to compare screening results in a simulated Chinese urban cohort(100,000 smokers aged45-80 years). Data of participant characteristics were obtained from national registries and epidemiological surveys for estimating lung cancer prevalence. The selection of other tree variables such as sensitivities and specificities of low-dose CT and chest X-ray screening were based on literature research. Differences in lung cancer mortality(primary outcome), false diagnoses, and deaths due to false diagnosis were calculated. Sensitivity analyses were performed to identify the factors that associate with the screening results and to ascertain worst and optimal screening effects considering possible ranges of the ***: Among the 100,000 subjects, there were 448,541, and 591 lung cancer deaths in the low-dose CT, chest X-ray, and no screening scenarios, respectively(17.2% reduction in low-dose CT screening over chest X-ray screening and 24.2% over no screening). The costs of the two screening scenarios were 9387 and 2497 false diagnoses and 7and 2 deaths due to false diagnosis among the 100,000 persons, respectively. The factors that most influenced death reduction with low-dose CT screening over no screening were lung cancer prevalence in the screened cohort, lowdose CT sensitivity, and proportion of early-stage cancers among low-dose CT detected lung cancers. Considering all possibilities, reduction in deaths(relative numbers) with low-dose CT screening in the worst and optimal cases were16(5.4%) and 288(40.2%) over no screening, respectively.

关键词： Lung cancer Low-dose CT Screening Mortality outcome Decision analysis