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Effect of Ti Additions on Mechanical and Thermodynamic Properties of W-Ti Alloys:A First-principles Study

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 246-257页

作者：张建 NIE Wei HUANG Jin ZHU Ke liu ruxia 张睿智 LUO Guoqiang SHEN Qiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Institute for Carbon Neutrality University of Science and Technology Beijing

The mechanical and thermodynamic properties of W-Ti alloys (including W15Ti1,W14Ti2,W12Ti4and W8Ti8alloys) were investigated by the first-principles approach based on density functional *** results indicate that W-Ti alloys except W8Ti8are thermodynamically *** modulus and hardness of W-Ti alloys are smaller than those of pure tungsten and gradually decrease with increasing Ti ***,their B/G ratios and Poisson's ratios exceed those of pure tungsten,suggesting that the introduction of Ti decreases the mechanical strength while enhancing the ductility of W-Ti *** thermal expansion coefficients for W-Ti alloys all surpass those of pure tungsten,indicating that the introduction of titanium exacerbates the thermal expansion behavior of W-Ti ***,elevated pressure has the capacity to suppress the thermal expansion tendencies in titanium-doped tungsten *** study offers theoretical insights for the design of nuclear materials by exploring the mechanical and thermodynamic properties of W-Ti alloys.

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Change in elastic properties during room-temperature aging in body-centered cubic Mg-Li and Mg-Li-Al single crystals

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Journal of Materials Science & Technology 2022年第14期109卷 49-53页

作者： ruxia liu Shota Higashino Koji Hagihara Lianmeng Zhang Tohru Sekino Masakazu Tane SANKEN(The Institute of Scientific and Industrial Research) Osaka University8-1 MihogaokaIbarakiOsaka 567-0047Japan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Graduate School of Engineering Osaka City University3-3-138 SugimotoOsaka558-8585Japan Department of Physical Science and Engineering Nagoya Institute of TechnologyNagoya 466-8555Japan

Biodegradable materials,with many advantages over conventionally used non-biodegradable materials,have received much attention owing to the elimination of the need for a secondary surgery for the removal of implants after *** with other biodegradable ceramics and/or polymers,Mg alloys are considered to be the most promising biodegradable orthopedic materials because they feature not only high specific strength and compressive yield strength but also a low Young’s modulus,which is comparable to that of human bones(10-30 GPa)[1,2].

关键词： strength aging alloys

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煤矿薄基岩条件下巷道掘进工艺分析

洁净煤技术 2023年第S1期29卷 20-23页

作者：刘儒侠国能神东煤炭集团有限责任公司规划发展部陕西神木719315 内蒙古科技大学采矿学院内蒙古包头014010

随着大柳塔煤矿对52煤、22煤煤层的深度回采,在开拓巷道、准备巷道的掘进过程中常遇到顶板基岩变薄,造成支护困难、淋水大、巷道成型差等难题,严重影响掘进安全及掘进效率,如何选择一套较好的掘进工艺,实现高效、安全掘进是现阶段采矿... 详细信息

随着大柳塔煤矿对52煤、22煤煤层的深度回采,在开拓巷道、准备巷道的掘进过程中常遇到顶板基岩变薄,造成支护困难、淋水大、巷道成型差等难题,严重影响掘进安全及掘进效率,如何选择一套较好的掘进工艺,实现高效、安全掘进是现阶段采矿学者需解决的技术难题之一。以大柳塔煤矿22316工作面运顺、回风措施巷掘进为例,介绍了薄基岩条件下支护、循环、人员组织3方面改优化策略,为同样条件下其他巷道安全、高效生产提供借鉴意义。

关键词：薄基岩巷道掘进煤层深度回采支护

不同施肥水平对菜用马铃薯农艺性状及营养品质的影响

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西北农业学报 2016年第2期25卷 220-226页

作者：陈华刘孟君刘如霞西北农林科技大学农学院陕西杨凌712100

为探索关中地区春播菜用马铃薯的合理氮、磷、钾施肥量,以‘早大白’为材料,通过田间试验研究不同氮、磷、钾施肥量对马铃薯生长发育、产量及品质的影响。结果表明:适当增加氮磷钾配施量有利于马铃薯株高生长,提高块茎膨大期马铃薯根、... 详细信息

为探索关中地区春播菜用马铃薯的合理氮、磷、钾施肥量,以‘早大白’为材料,通过田间试验研究不同氮、磷、钾施肥量对马铃薯生长发育、产量及品质的影响。结果表明:适当增加氮磷钾配施量有利于马铃薯株高生长,提高块茎膨大期马铃薯根、茎、叶干质量,叶绿素质量分数和净光合速率。与对照相比,适宜增加氮磷钾施肥量能提高块茎产量,增产幅度为7.33%~10.05%,其中最佳施肥组合处理比对照增产2 613.34kg/hm^2。合理的氮磷钾配施能够提高马铃薯块茎干物质、淀粉、维生素C和可溶性蛋白质量分数,降低还原糖质量分数,从而提高马铃薯产品品质。施肥过量会抑制马铃薯生长发育,降低块茎产量和品质。合理的氮、磷、钾肥施用量能够促进马铃薯生长发育,提高块茎产量及品质,其中最佳施肥组合为N 37.18kg/hm^2、P_2O_514.99kg/hm^2、K_2O 67.77kg/hm^2。

关键词：马铃薯氮磷钾生长发育产量品质

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中国经济增长质量测度研究

创新科技 2020年第5期20卷 64-70页

作者：胡珊珊刘汝霞牛牧青郭凯河南科技大学管理学院河南洛阳471003 河南科技大学经济学院河南洛阳471003 河南科技大学临床医学院河南洛阳471003

本文通过对国内外相关文献进行梳理,构建包含4维度15个基础指标的经济增长质量指标评价体系,采用主成分分析法对中国1999—2018年间的经济增长质量进行综合测度。结果显示,国民经济素质对经济增长质量有显著的促进作用,是推动经济增长... 详细信息

本文通过对国内外相关文献进行梳理,构建包含4维度15个基础指标的经济增长质量指标评价体系,采用主成分分析法对中国1999—2018年间的经济增长质量进行综合测度。结果显示,国民经济素质对经济增长质量有显著的促进作用,是推动经济增长质量提升的重要力量。根据所得结果,从中国实际出发,提出几点具有建设意义的对策建议:提高国民经济素质、不断优化产业结构、加快发展社会福利、缩小收入分配差距等,以期为中国经济增长质量持续稳定地提高提供支持。

关键词：经济增长质量主成分分析法指标评价

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河南省独角兽企业发展路径与成长机制

创新科技 2020年第3期20卷 71-81页

作者：郭凯张田田刘汝霞游赵晗河南科技大学管理学院河南洛阳471003 河南科技大学经济学院河南洛阳471003

本文介绍了当前中国独角兽企业的现状,根据以往研究发现中国独角兽企业的发展路径为"初创企业-瞪羚企业-独角兽企业"。并以我国31个省(区市)为研究样本,选取市场规模、人才资源、国际市场、资金支持、政策资源、科技能力、新兴产业7个... 详细信息

本文介绍了当前中国独角兽企业的现状,根据以往研究发现中国独角兽企业的发展路径为"初创企业-瞪羚企业-独角兽企业"。并以我国31个省(区市)为研究样本,选取市场规模、人才资源、国际市场、资金支持、政策资源、科技能力、新兴产业7个影响因素,运用SPSS 19.0对其进行因子分析,得出资源支持、资金支持、新兴产业3个主因子。并结合聚类分析结果,确定河南省独角兽企业的成长机制,推动河南省独角兽企业的成长培育。

关键词：独角兽企业发展路径成长机制

Research on two-dimensional fluid vibration axial transmission path model of axial piston pump

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High Technology Letters 2019年第1期25卷 48-56页

作者： Quan Lingxiao Bai ruxia Zhang Qiwei liu Song Lu Yueliang College of Mechanical Engineering Yanshan University Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control Nanjing Engineering Institute of Aircraft System Jincheng AVIC

High speed and high pressure can enhance the vibration of axial piston pump. A fluid vibration transmission law of axial piston pump is studied in this paper. According to harmonic response analysis results, a transmission path analysis is used to establish a two-dimensional fluid vibration transmission path model in the vertical plane, which has characteristics of multi excitation sources, multi-path and multi-receptors. Model parameters are obtained by experimental and numerical analysis. Matlab is used to solve the model, and acceleration vibration response of three shells is got. To reduce the effect of mechanical vibration, the surface acceleration of pump is tested under low speed condition. Results show that the model can accurately reveal transmission law of fluid vibration and the accuracy is more than 90%. The research lays a foundation for exploring vibration transmission law and vibration control.

关键词： axial piston pump fluid vibration vibration transmission path vibration response

基于CiteSpace的“药物性肝损伤”研究热点与趋势分析

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贵州中医药大学学报 2024年第2期46卷 64-69页

作者：王宗艳郑燕刘如霞李玉平林昶何莉华陈云志杨长福贵州中医药大学贵州贵阳550025 贵州神奇药业有限公司贵州贵阳550004

目的:基于CiteSpace软件对2013年—2022年药物性肝损伤相关文献进行可视化分析,探索该学科领域研究热点和趋势。方法:利用CiteSpace软件,以“药物性肝损伤”为主题,检索CNKI、万方、维普、PubMed数据库公开发表的相关文献,通过作者、关... 详细信息

目的:基于CiteSpace软件对2013年—2022年药物性肝损伤相关文献进行可视化分析,探索该学科领域研究热点和趋势。方法:利用CiteSpace软件,以“药物性肝损伤”为主题,检索CNKI、万方、维普、PubMed数据库公开发表的相关文献,通过作者、关键词共现和关键词突显等方法对文献进行可视化图谱分析。结果:筛选后共纳入1609篇文献,年发文量整体呈上升趋势;核心作者145位,对该领域的研究已经形成多个核心研究团队;研究热点集中在药物致肝损伤发生机制。结论:药物性肝损伤相关领域的研究热度逐年上升,其机制研究层面不断深入、挖掘潜在的生物标志物和遗传信息可能是以后重点研究的方向。

关键词：药物性肝损伤肝损伤 CiteSpace 知识图谱类器官可视化分析研究热点与趋势文献计量

Spatial Heterogeneity and Risk Factors of Dental Caries in 12-Year-Old Children in Shanxi Province,China

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Biomedical and Environmental Sciences 2024年第10期37卷 1173-1183页

作者： ruxia Hou Tingting Yang Jiajia liu Hao Chen Wen Kang Junming Li Xiaotong Shi Yi Liang Junyu liu Bin Zhao Xiangyu Wang Shanxi Medical University School and Hospital of Stomatology Taiyuan 030001ShanxiChina Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials Taiyuan 030001ShanxiChina School of Statistics Shanxi University of Finance and EconomicsTaiyuan 030006ShanxiChina

Objective This study aimed to explore the spatial heterogeneity and risk factors for dental caries in 12-year-old children in Shanxi province,*** The data encompassed 3,721 participants from the two most recent oral health surveys conducted across 16 districts in Shanxi Province in 2015 and *** specific variables were analyzed to examine the interplay between socioeconomic factors,medical resources and environmental *** Geo-detector model was employed to assess the impacts and interactions of these ecological *** Socioeconomic factors(Q=0.30,P<0.05)exhibited a more substantial impact compared to environmental(Q=0.19,P<0.05)and medical resource factors(Q=0.25,P<0.05).Notably,the urban population percentage(UPP)demonstrated the most significant explanatory power for the spatial heterogeneity in caries prevalence,as denoted by its highest q-value(q=0.51,P<0.05).Additionally,the spatial distribution’s heterogeneity of caries was significantly affected by SO2 concentration(q=0.39,P<0.05)and water fluoride levels(q=0.27,P<0.05)among environmental *** The prevalence of caries exhibited spatial heterogeneity,escalating from North to South in Shanxi Province,China,influenced by socioeconomic factors,medical resources,and environmental conditions to varying extents.

关键词： Caries Socioeconomic factors Natural environment Oral health services Spatial heterogeneity analysis Risk factors