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不同软组织替代物在比格犬尖牙唇侧区域移植后附着龈的厚度和组织学变化

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中国组织工程研究 2024年第11期28卷 1660-1665页

作者：张红霞栗兴超高玺鑫张晓梅双马寒夕张天河北医科大学口腔医学院·口腔医院口腔颌面外科河北省口腔医学重点实验室河北省口腔疾病临床医学研究中心河北省石家庄市050017

背景:上皮下结缔组织移植被认为是软组织增量术的金标准,然而,自体移植需要开辟第二术区,延长手术时间,增加患者的疼痛感,这也使得软组织替代物成为研究热点。目的:比较不同软组织替代物在比格犬尖牙唇侧区域移植后移植区附着龈厚度和... 详细信息

背景:上皮下结缔组织移植被认为是软组织增量术的金标准,然而,自体移植需要开辟第二术区,延长手术时间,增加患者的疼痛感,这也使得软组织替代物成为研究热点。目的:比较不同软组织替代物在比格犬尖牙唇侧区域移植后移植区附着龈厚度和组织学变化。方法:在3只比格犬尖牙唇侧附着龈区域,分别用双层同种异体脱细胞真皮基质膜(allograft acellular dermal matrix,AADM)、牛源性脱细胞真皮基质(bovine acellular dermal matrix,BADM)联合浓缩生长因子膜以及BADM联合胶原蛋白海绵进行附着龈增厚。分别在术前和术后1,2,3,4个月测量附着龈厚度,术后4个月进行组织学观察。结果与结论:①术后第1-4个月,双层AADM组附着龈厚度及附着龈厚度增量均值高于其他2组(均P0.05);术后4个月,双层AADM组附着龈厚度均值较术前仍显著增加(P<0.05);第1-4个月双层AADM组附着龈厚度值最高,其次为BADM联合胶原蛋白海绵组,BADM联合浓缩生长因子组最低;③双层AADM组真皮基质与宿主牙龈组织良好的结合在一起,并可见新生纤维结缔组织和成纤维细胞长入基质内,另外两组移植物已经完全吸收,增量区域改建成与周围宿主组织一致的结构;④结果说明,AADM在牙龈增厚方面优于BADM联合浓缩生长因子膜和BADM联合胶原蛋白海绵。

关键词：脱细胞真皮基质浓缩生长因子胶原蛋白海绵牙龈增厚

血浆致动脉硬化指数对不同年龄急性缺血性脑卒中血管内介入治疗短期预后的评估

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中国临床研究 2024年第8期37卷 1234-1237,1243页

作者：李淑晓李兴超王友芳朱晓松刘照营车峰远潍坊医学院临床医学院山东潍坊261000 临沂市人民医院神经内科山东临沂276002 临沂市人民医院科研科山东临沂276002 临沂市人民医院重症医学科山东临沂276002 临沂市人民医院感染管理部山东临沂276002 锦州医科大学研究生培养基地(临沂市人民医院) 山东临沂276002

目的探讨血浆致动脉硬化指数(AIP)对不同年龄段急性缺血性脑卒中(AIS)患者血管内介入治疗短期预后的评估作用。方法筛选2020年1月至2022年12月在临沂市人民医院进行血管内介入治疗的AIS患者,根据年龄和AIP将患者分为低AIP中青年组(A组... 详细信息

目的探讨血浆致动脉硬化指数(AIP)对不同年龄段急性缺血性脑卒中(AIS)患者血管内介入治疗短期预后的评估作用。方法筛选2020年1月至2022年12月在临沂市人民医院进行血管内介入治疗的AIS患者,根据年龄和AIP将患者分为低AIP中青年组(A组,50例),高AIP中青年组(B组,81例),低AIP老年组(C组,131例),高AIP老年组(D组,100例),以AIP为短期预后预测因子进行分析。结果四组年龄、血糖、高血压病史、收缩压、入院NHISS评分、TC、TG、HDL-C、LDL-C、白蛋白、AIP比较差异有统计学意义(P<0.05)。A组、B组、C组、D组预后良好率分别为62.0%、40.7%、42.7%、38.0%,四组比较差异有统计学意义(χ^(2)=8.465,P=0.037),两两比较,B、C、D组的预后良好率低于A组,差异有统计学意义(P<0.05)。AIP和低入院NHISS评分是AIS患者预后良好的保护性因素(P<0.05)。AIP预测患者短期不良预后的最佳预测临界值为0.01,灵敏度为66.20%,特异度为51.30%,曲线下面积为0.611。结论 AIP是AIS患者血管内介入治疗短期预后的独立影响因素,有一定的临床应用价值。

关键词：血浆致动脉硬化指数急性缺血性脑卒中血管内介入治疗预后

A novel medium-entropy(TiVNb)_(2)AlC MAX phase:Fabrication,microstructure,and properties

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Journal of Materials Science & Technology 2023年第6期137卷 91-99页

作者： Guangqi He Yi Zhang Pei Yao xingchao li Ke Ma Jun Zuo Meishuan li Changsheng liu Jingjun Xu School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Science and Technology on Advanced Functional Composites Laboratory Aerospace Research Institute of Material and Processing TechnologyBeijing 100076China

Medium-or high-entropy materials have great potential for applications due to their diverse compo-sitions and unexpected physicochemical ***,a novel medium-entropy(TiVNb)_(2)AlC was synthesized via hot pressing at 1400℃from three individual M_(2)AlC(M=Ti,V,Nb)MAX *** microstructure of(TiVNb)_(2)AlC was characterized from the microscale to the atomic scale by scanning electron microscope microscopy(SEM),scanning transmission electron microscopy(STEM),and energy dispersive spectroscopy(EDS).The results showed that Ti,V,and Nb atoms were fully solid-soluble in the M-sites of the M_(2)AlC MAX *** with three individual MAX phases,the thermal conduc-tivity of(TiVNb)_(2)AlC was reduced greatly in the temperature range of 293-1473 K,and its mechanical properties(including Young’s modulus,Vickers hardness,and bending strength)were all increased due to the solid solution strengthening and electronic mechanism.

关键词： Medium-entropy ceramics MAX phases Microstructure Thermal properties Mechanical properties

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大型公立医院业财融合管理的实践探索

中国医疗管理科学 2024年第1期14卷 112-116页

作者：聂子翔孔霞高爽黄慧文李兴超临沂市人民医院经济管理部山东临沂市276002 中国海洋大学管理学院

以山东省临沂市人民医院的业财融合管理实践为例,围绕提升医院经济管理水平,赋能医院高质量发展,从预算刚性约束和内部费用控制系统应用角度进行研究分析,结合医院智慧财务管控的阶段性成果,提出智慧财务管控的创新思想以及优化思路,将... 详细信息

以山东省临沂市人民医院的业财融合管理实践为例,围绕提升医院经济管理水平,赋能医院高质量发展,从预算刚性约束和内部费用控制系统应用角度进行研究分析,结合医院智慧财务管控的阶段性成果,提出智慧财务管控的创新思想以及优化思路,将“过紧日子”的理念落到实处,为公立医院智慧财务管控建设提供借鉴和参考。

关键词：业财融合公立医院预算管理内部控制

某写字楼幕墙开启部位启闭故障分析与整改建议

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工程质量 2024年第S1期42卷 207-210页

作者：王晓军张维杰李兴超李聪孙梅凤赵鹏宇中国建筑金属结构协会北京100037 建研院检测中心有限公司北京100013 建科环能科技有限公司北京100013

某写字楼因建筑立面造型要求,玻璃幕墙开启部位规格较大,宽高尺寸为1500mm×3500mm。在日常使用过程中,大多数幕墙开启部位存在启闭困难的问题。经过现场对幕墙开启部位的材料质量、安装质量等进行检测,并结合有限元模拟计算,发现建筑... 详细信息

某写字楼因建筑立面造型要求,玻璃幕墙开启部位规格较大,宽高尺寸为1500mm×3500mm。在日常使用过程中,大多数幕墙开启部位存在启闭困难的问题。经过现场对幕墙开启部位的材料质量、安装质量等进行检测,并结合有限元模拟计算,发现建筑立面造型、开启部位规格尺寸过大、五金件安装偏差、开启部位安装质量缺陷等是造成上述问题的主要原因。基于现场检测数据分析及结构计算结果,给出相关整改建议。

关键词：玻璃幕墙开启部位安装质量

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大型公立医院评审全流程管理策略实践与应用

中国医院 2024年第7期28卷 84-86页

作者：张玉军李兴超王友芳秦大伟相然聂子翔聂鹏飞靳如勤车峰远临沂市人民医院山东省临沂市276002

医院评审是促进大中型公立医院实现高质量发展的关键抓手,全流程管理策略则是推动大中型公立医院实现高质量发展的重要手段。通过全流程管理策略可以充分融合医院资源优势、技术优势、资金优势和人才优势,探索全流程管理新业态、新模式... 详细信息

医院评审是促进大中型公立医院实现高质量发展的关键抓手,全流程管理策略则是推动大中型公立医院实现高质量发展的重要手段。通过全流程管理策略可以充分融合医院资源优势、技术优势、资金优势和人才优势,探索全流程管理新业态、新模式,深入开展现代医院精细化运营管理,以医院评审培育新动能,用新动能推动新发展,以评促建、以评促改、评建并举,完善医院运营管理模式,提升医疗服务效率,优化医疗资源配置,推动医院更快更好地实现高质量发展。

关键词：高质量发展公立医院省级区域医疗中心医院评审全流程管理

Ru-Ni alloy nanosheets as tandem catalysts for electrochemical reduction of nitrate to ammonia

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Nano Research 2024年第6期17卷 4815-4824页

作者： xingchao You Jiawei Xu Zechao Zhuang Junkai Xia Suwen Wang Haiyan Wei Yongfu li Yanjiang Cai Hai Xiang Bing Yu State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China Ecological-Environment&Health College(EEHC) Zhejiang A&F UniversityHangzhou 311300China Jiangsu Key Laboratory of Numerical Simulation of Large Scale Complex Systems and School of Chemistry and Materials Science Nanjing Normal UniversityNanjing 210023China Department of Chemistry Tsinghua UniversityBeijing 100084China Department of Chemical Engineering Columbia UniversityNew YorkNY 10027USA

Developing electrocatalysts that exhibit both high activity and ammonia selectivity for nitrate reduction is a significant and demanding challenge,primarily due to the complex nature of the multiple-electron reduction process *** encouraging approach involves coupling highly active precious metals with transition metals to enhance catalytic performance through ***,we report a ruthenium-nickel alloy catalyst with nanosheets(Ru-Ni NSs)structure that achieves a remarkable ammonia Faradaic efficiency of approximately 95.93%,alongside a yield rate of up to 6.11 g·h^(−1)·cm^(−2).Moreover,the prepared Ru-Ni NSs exhibit exceptional stability during continuous nitrate reduction in a flow reactor for 100 h,maintaining a Faradaic efficiency of approximately 90%and an ammonia yield of 37.4 mg·L^(−1)·h^(−1)using 0.05 M nitrate alkaline *** studies reveal that the catalytic process follows a two-step pathway,in which HONO serves as a migration *** presence of a partially oxidized Ru(002)surface enhances the adsorption of nitrate and facilitates the release of the migration intermediate by adjusting the strength of the electrostatic and covalent interactions between the adsorbate and the surface,*** the other hand,the Ni(111)surface promotes the utilization of the migration intermediate and requires less energy for NH_(3)*** tandem process contributes to a high catalytic activity of Ru-Ni NSs towards nitrate reduction.

关键词： alloy catalyst nitrate reduction ammonia synthesis Faradaic efficiency

Oxidation behavior of non-stoichiometric(Zr,Hf,Ti)C_(x) carbide solid solution powders in air

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Journal of Advanced Ceramics 2021年第4期10卷 741-757页

作者： Huilin LUN Yi ZENG Xiang XIONG Ziming YE Zhongwei ZHANG xingchao li Haikun CHEN Yufeng liU State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Science and Technology of Advanced Functional Composites Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China

Multi-component solid solutions with non-stoichiometric compositions are characteristics of ultra-high temperature carbides as promising materials for hypersonic ***,for group IV transition-metal carbides,the oxidation behavior of multi-component non-stoichiometric(Zr,Hf,Ti)C_(x)carbide solid solution has not been clarified *** present work fabricated four kinds of(Zr,Hf,Ti)C_(x)carbide solid solution powders by free-pressureless spark plasma sintering to investigate the oxidation behavior of(Zr,Hf,Ti)C_(x)in *** effects of metallic atom composition on oxidation resistance were *** results indicate that the oxidation kinetics of(Zr,Hf,Ti)C_(x)are composition dependent.A high Hf content in(Zr,Hf,Ti)C_(x)was beneficial to form an amorphous Zr-Hf-Ti-C-0 oxycarbide layer as an oxygen barrier to enhance the initial oxidation ***,an equiatomic ratio of metallic atoms reduced the growth rate of(Zr,Hf,Ti)O_(2)oxide,increasing its phase stability at high temperatures,which improved the oxidation activation energy of(Zr,Hf,Ti)C_(x).

关键词： ultra-high temperature ceramics(UHTCs) (Zr,Hf,Ti)C_(x)carbides oxidation behavior oxidation resistance free-pressureless spark plasma sintering

CBERS-02 Application Assessment

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空间科学学报 2004年第Z1期24卷 46-59页

作者： GUO Jianning YU Jin MIN Xiangjun li xingchao HOU Minghui China Center for Resources Satellite Data and Application Beijing 100830 China China Center for Resources Satellite Data and Application Beijing 100830 China China Center for Resources Satellite Data and Application Beijing 100830 China China Center for Resources Satellite Data and Application Beijing 100830 China China Center for Resources Satellite Data and Application Beijing 100830 China

As the successor of CBERS-01, CBERS-02 was launched successfully on 21October 2003 and transmitted its first downlink data the next day. According to the OBT (On Board Test) outline, CRESDA cooperated with CAST and many remote sensing organizations in China in implementing the test of the satellite payloads, ground processing system and data application. In this paper, the test is briefly illustrated in three parts: Ⅰ. Satellite Parameters Test (especially the test for payloads), Ⅱ. Payload Image Quality Assessment, and Ⅲ. Data Application Assessment. The results of the test show that the image quality of CBERS-02 is much improved over CBERS-01 and will continue to play a more important role in the society and economic development of China.

关键词： CBERS-02, Application System, On Board Test