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煤矿井下钻机的自动加卸钻杆方法探讨

煤矿机械 2024年第5期45卷 82-84页

作者：孙长斌姚亚峰张建荣国能神东煤炭集团有限责任公司陕西榆林719300 中煤科工西安研究院(集团)有限公司西安710077

通过分析煤矿井下自动化钻机常见自动加卸钻杆系统的结构原理、控制方法及适用条件等,对当前钻机自动加卸钻杆系统的特点进行了总结。对现有自动加卸钻杆系统存在的问题提出了具体的研究建议,并指出以防爆伺服电机控制的六轴机械手为核... 详细信息

通过分析煤矿井下自动化钻机常见自动加卸钻杆系统的结构原理、控制方法及适用条件等,对当前钻机自动加卸钻杆系统的特点进行了总结。对现有自动加卸钻杆系统存在的问题提出了具体的研究建议,并指出以防爆伺服电机控制的六轴机械手为核心的自动化钻机加卸钻杆系统是未来的发展方向,可为智能化钻孔机器人的研究奠定基础。

关键词：钻机自动加卸钻杆机械手本安传感器电液控制

Study of Erosion Rate of Molybdenum under Electron Beam Irradiation

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IMP & HIRFL Annual Report 2019年第1期 217-218页

作者： zhang Yaling zhang jianrong zhang Yanshi zhang Xuezhi Yang Lei 不详

As the develop of medical technology,radiopharmaceuticals are playing more important roles in clinic diagnostic and treatment.In developed countries,one fifth of the patients will use radioisotopes,among which^(99)mTc... 详细信息

关键词： treatment. Electron Erosion

Carbon dots modified nanoflower petals with super enhanced nitrogen electro-reduction efficiency

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Chinese Chemical Letters 2023年第6期34卷 406-411页

作者： Yang Zhou Xuanzhao Lu Yu-chung Chang Yanwen Ma Linlin Wang jianrong zhang Junjie Zhu State Key Laboratory for Organic Electronics and Information Displays&Institute of Advanced Materials IAM Nanjing University of Posts&TelecommunicationsNanjing 210023China State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China School of Mechanical and Materials Engineering Washington State UniversityPullmanWA 99164United States

Nitrogen electro-reduction reaction(NERR)is a promising alternative method for ammonia production to the Haber-Bosch approach due to mild reaction conditions and free harmful by-product emission.A formidable challenge in bringing NERR closer to the practical application is developing an electrocatalyst which can simultaneously improve the Faraday efficiency and reduce the reaction over-potential.Herein,we fabricated a catalyst of nitrogen-doped carbon dots modified copper-phosphate nanoflower petals(Cu Po-NCDs NF)via a self-assembly method.The flower structure endowed the Cu Po-NCDs NF with large specific surface area,and thus enabled more active sites to be exposed.In particular,we demonstrated that the NCDs modified Cu Po petals with flower-like structure can accelerate the interfacial proton-electron transfer,suppressing the competing hydrogen evolution reaction and promoting the desired NERR process.Ultimately,for the CuPo-NCDs NF catalyzed NERR,the FE_(NH_(3))and the reaction potential both were boosted,the resultant energy efficiency of NERR reached a record-breaking value of 56.5%,and the NH_(3)yield rate increased by 7 times compared to NCDs.This study provides a novel catalyst with a new pathway to boost the NERR.

关键词： Nitrogen-doped carbon dots Nano-flower Self-assembly Interfacial proton-electron transfer Nitrogen electro-reduction

老年痴呆病人实施人手喂养的安全性及有效性的Meta分析

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循证护理 2024年第11期10卷 1927-1931页

作者：高莹张淑清吴玉娥崔鑫浩张建荣东莞市厚街医院广东523945

目的:系统评价老年痴呆病人实施人手喂养的安全性及有效性,为老年痴呆病人在其痴呆轻症期自预设医疗指示,为家属及临床医护在病人痴呆中、重度期是否实施人手喂养提供决策依据。方法:计算机检索中国知网、万方数据库、PubMed、CINAHL、E... 详细信息

目的:系统评价老年痴呆病人实施人手喂养的安全性及有效性,为老年痴呆病人在其痴呆轻症期自预设医疗指示,为家属及临床医护在病人痴呆中、重度期是否实施人手喂养提供决策依据。方法:计算机检索中国知网、万方数据库、PubMed、CINAHL、EMbase、Web of Science、the Cochrane Library等数据库中关于老年痴呆病人实施人手喂养的随机对照研究、类试验研究、队列研究,检索时限为建库到2023年9月。由2名研究者进行文献筛选、资料提取及方法学质量评价,并运用RevMan 5.3软件进行统计分析。结果:纳入6项研究,涉及病人1796例,其中试验组(人手喂养)811例,对照组(鼻胃管喂养)985例。Meta分析结果显示,人手喂养可降低老年痴呆病人的肺炎发生率[RR=0.51,95%CI(0.33,0.77),P=0.002]和死亡率[RR=0.54,95%CI(0.32,0.93),P=0.030]。结论:现有证据表明,老年痴呆病人实施人手喂养,可降低其肺炎发生率及死亡率。

关键词：人手喂养老年痴呆死亡率肺炎 Meta分析循证护理

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Dynamic Characteristics Analysis of Cylinders Bundle Coupling System under Axial Flow

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IMP & HIRFL Annual Report 2019年第1期 212-214页

作者： Shu Yafeng Yang Yangyang Liu Weiming Tao Kewei Ma Lidong zhang jianrong zhang Yanshi 不详

Nuclear reactor fuel assemblies are mainly composed of cylinders bundle(CB),calculating the dynamics charac-teristics of CB under axial flow can lay a founda-tion for predicting fretting wear and vibration fatigue.

关键词： bundle calculating cylinders

基于CT的三维重建模型及术前虚拟手术在输尿管狭窄腹腔镜手术中的应用研究

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中华腔镜泌尿外科杂志(电子版) 2024年第4期18卷 372-379页

作者：张云浩何玲敏孙旭马洪贵刘磊张见荣梅傲冰贵州中医药大学贵阳市第二人民医院泌尿外科贵州医科大学贵州医科大学附属医院小儿外科贵州医科大学附属医院泌尿外科

目的探讨三维（3D）重建技术及术前虚拟诊疗在输尿管狭窄腹腔镜手术中应用价值。方法选择2016年10月至2022年9月贵阳市第二人民医院及贵州医科大学附属医院泌尿外科收治的输尿管狭窄住院患者病例资料进行分析，共纳入19例。3D组以CT... 详细信息

目的探讨三维（3D）重建技术及术前虚拟诊疗在输尿管狭窄腹腔镜手术中应用价值。方法选择2016年10月至2022年9月贵阳市第二人民医院及贵州医科大学附属医院泌尿外科收治的输尿管狭窄住院患者病例资料进行分析，共纳入19例。3D组以CT数据重建三维可视化模型进行手术规划，共8例（男5例，女3例）；CT组以CT影像进行手术规划，共11例（男7例，女4例）。CT组术前通过CT影像确定患者输尿管狭窄部位、长度及程度。3D组术前术者通过3D重建模型明确狭窄部位的解剖关系和精准定位，使用3D重建软件（IPS）中的手术入路点计算、虚拟软镜、穿刺模拟和虚拟切除等功能进行术前模拟，最终全部患者均行经腹腹腔镜下输尿管重建手术。结果19例手术均顺利完成，无一例中转成开放手术。3D组术中出血量明显小于CT组，差异具有统计学意义（P0.05）。结论 3D重建技术及术前虚拟手术可辅助术者制定个体化手术方案以实现精准切除及修复，可减少术中出血，对输尿管狭窄腹腔镜手术中提高手术安全性具有较高的临床应用价值，值得进一步推广及应用。

关键词：三维重建虚拟现实输尿管狭窄数字化

Screening and identification of functional bacterial attachment genes in aerobic granular sludge

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Journal of Environmental Sciences 2024年第7期141卷 205-214页

作者： Kai Qiao Tingting Zhao LeiWang Wei zhang WeiMeng Fan Liu Xu Gao jianrong Zhu School of Environment Beijing Normal UniversityBeijing 100875China State Key Laboratory of Water Simulation Beijing 100875China R&D Centre of Aerobic Granule Technology Beijing 100875China

The screening and identification of attachment genes is important to exploring the formation mechanism of biofilms at the gene level.It is helpful to the development of key culture technologies for aerobic granular sludge(AGS).In this study,genome-wide sequencing and gene editing were employed for the first time to investigate the effects and functions of attachment genes in AGS.With the help of whole-genome analysis,ten attachment genes were screened from thirteen genes,and the efficiency of gene screening was greatly improved.Then,two attachment genes were selected as examples to further confirm the gene functions by constructing gene-knockout recombinant mutants of Stenotrophomonas maltophilia;when the two attachment genes were knocked out,the attachment potential was reduced by 50.67%and 43.93%,respectively.The results provide a new theoretical principle and efficient method for the development of AGS from the perspective of attachment genes.

关键词： Attachment gene Genome-wide sequence Gene-knockout Attachment potential Aerobic granular sludge biofilm

打造援外医疗“中国名片”——中山大学附属第一医院援外医疗实践探索

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现代医院 2024年第6期24卷 844-846,850页

作者：唐艺瑜张剑荣姚文宝李榕丁书琴中山大学附属第一医院广东广州510080

党的十八大以来,习近平总书记高度重视援外医疗工作,作出一系列重要指示,中国援外医疗步入发展合作新阶段,为推动构建人类卫生健康共同体作出重要贡献。中山大学附属第一医院积极响应国家战略,深入推动援外医疗工作,援外医疗队国际医疗... 详细信息

党的十八大以来,习近平总书记高度重视援外医疗工作,作出一系列重要指示,中国援外医疗步入发展合作新阶段,为推动构建人类卫生健康共同体作出重要贡献。中山大学附属第一医院积极响应国家战略,深入推动援外医疗工作,援外医疗队国际医疗支援的足迹遍布非洲加纳、赤道几内亚,大洋洲斐济,欧洲塞尔维亚,北美洲多米尼克等11个“一带一路”沿线国家和地区,获得全国援外医疗工作先进集体、全国援外医疗工作先进个人、塞尔维亚政府金质功勋奖章等国内外奖项。随着中国援外医疗队派遣走过60年的光辉历程,笔者以打造援外医疗队国际品牌为主线,以赴塞尔维亚抗疫医疗专家、援多米尼克专家为代表,总结该院创建多层次、全过程管理体系,为援外医疗凝聚后方力量等一系列举措,旨在为大型公立医院援外医疗管理提供参考。

关键词：援外医疗管理体系创新模式国际影响力

Effect of sodium starch octenyl succinate-based Pickering emulsion on the physicochemical properties of hairtail myofibrillar protein gel subjected to multiple freeze-thaw cycles

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Food Science and Human Wellness 2024年第2期13卷 1018-1028页

作者： Huinan Wang Jiaxin zhang Xinran Liu Jinxiang Wang Xuepeng Li jianrong Li Key Laboratory of Food Nutrition and Safety Ministry of EducationCollege of Food Science and EngineeringTianjin University of Science and TechnologyTianjin 300457China College of Food Science and Technology Bohai UniversityNational R&D Branch Center of Surimi and Surimi Products ProcessingJinzhou 121013China

A Pickering emulsion based on sodium starch octenyl succinate(SSOS)was prepared and its effects on the physicochemical properties of hairtail myofibrillar protein gels(MPGs)subjected to multiple freeze-thaw(F-T)cycles were investigated.The whiteness,water-holding capacity,storage modulus(G')and texture properties of the MPGs were significantly improved by adding 1%-2%Pickering emulsion(P<0.05).Meanwhile,Raman spectral analysis demonstrated that Pickering emulsion promoted the transformation of secondary structure,enhanced hydrogen bonds and hydrophobic interactions,and promoted the transition of disulfide bond conformation from g-g-g to g-g-t and t-g-t.At an emulsion concentration of 2%,theα-helix content decreased by 10.37%,while theβ-sheet content increased by 7.94%,compared to the control.After F-T cycles,the structure of the MPGs was destroyed,with an increase in hardness and a decrease in whiteness and water-holding capacity,however,the quality degradation of MPGs was reduced with 1%-2%Pickering emulsion.These findings demonstrated that SSOS-Pickering emulsions,as potential fat substitutes,can enhance the gel properties and the F-T stability of MPGs.

关键词： Pickering emulsion Myofibrillar protein Gel properties Freeze-thaw stability Intermolecular interactions