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我国中老年居民住院服务利用影响因素研究

南京医科大学学报（社会科学版） 2024年第3期24卷 243-248页

作者：李振坤向阳刘乃鹏陶洁翟飞中国科学技术大学附属第一医院(安徽省立医院)总院病案统计室安徽合肥230001 中国科学技术大学附属第一医院(安徽省立医院)南区病案统计室安徽合肥230001

文章基于2020年中国健康与养老追踪调查数据,借鉴Anderson健康行为模型,研究我国中老年居民住院服务利用的影响因素。结果显示,14491例居民中,2285例(15.8%)过去一年利用过住院服务。二元Logistic回归分析表明,性别、年龄、吸烟、饮酒... 详细信息

文章基于2020年中国健康与养老追踪调查数据,借鉴Anderson健康行为模型,研究我国中老年居民住院服务利用的影响因素。结果显示,14491例居民中,2285例(15.8%)过去一年利用过住院服务。二元Logistic回归分析表明,性别、年龄、吸烟、饮酒、自评健康状况、慢性病患病情况和日常生活活动(ADL)能力是中老年居民住院服务利用的影响因素(P<0.05)。性别、吸烟、饮酒与住院服务利用存在一定的相关性(P<0.05)。总体而言,应重点关注60岁以上、男性、吸烟、饮酒、自评健康差、慢病患病数量多和ADL受损群体,精准把握该群体的现实需求,提供安全有效、可靠高质的医疗卫生服务。

关键词：中老年居民住院服务利用中国健康与养老追踪调查

Robust copper nanocrystal/nitrogen-doped carbon monoliths as carbon monoxide-resistant electrodes for methanol oxidation reaction

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Journal of Energy Chemistry 2021年第7期30卷 247-255页

作者： fei Chen Na Wu Meixu zhai Xue Zhang Ruihong Guo Tuoping Hu Mingming Ma Department of Chemistry College of ScienceNorth University of Chin1Taiyuan 030051ShanxiChina CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of Chin1Hefei 230026AnhuiChina

Noble metal-based electrocatalysts present high activities for methanol oxidation reaction(MOR),but are limited by their high cost,low stability and poor resistance to carbon monoxide(CO) *** development of active and stable non-noble metal electrocatalysts for MOR is desired,but remains a ***,we report a simple strategy to make copper nanocrystal/nitrogen-doped carbon(Cu/N-C)monoliths,which can serve as active and robust electrodes for *** nanocrystals were electrochemically deposited onto a conductive polyaniline hydrogel and calcined to form Cu/N-C monolith,where the active copper nanocrystals are protected by nitrogen-doped *** to their extremely high electrical conductivity(1.25 × 10^(5) S cm^(-1)) and mechanical robustness,these Cu/N-C monoliths can be directly used as electrodes for MOR,without using substrates or *** optimal Cu/N-C(FT)@500 monolith shows a high MOR activity of 189 mA cm^(-2) at 0.6 V *** in alkaline methanol solution,superior to most of reported Cu-based MOR ***/N-C(FT)@500 also presents a better stability than Pt/C catalyst in the long-term MOR test at high current *** carbon monoxide(CO) poisoning,Cu/N-C(FT)@500 retains 96% of its MOR activity,far exceeding the performance of Pt/C catalyst(61% retention).Owing to its facile synthesis,outstanding activity,high stability and mechanical robustness,Cu/N-C(FT)@500 monolith is promising as a low-cost,efficient and CO-resistant electrocatalyst for MOR.

关键词： Copper nanocrystal Methanol oxidation reaction Non-noble metal-based electrocatalysts Poison-resistant electrocatalysts Nitrogen-doped carbon

目标成本管理在天津TJJJ电动车有限公司的创新应用

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中国管理会计 2024年第3期 108-117页

作者：程飞潘玉香王会翟晴晴天津金箭电动车有限公司天津工业大学

电动车行业快速发展并日趋成熟,行业竞争不断加剧。为保证企业的生存与可持续健康发展,强化成本管理迫在眉睫。天津TJJJ电动车有限公司创新性应用目标成本法来管控成本,涵盖了技术设计、工艺优化、费用预算控制、材料管理、采购调达调... 详细信息

电动车行业快速发展并日趋成熟,行业竞争不断加剧。为保证企业的生存与可持续健康发展,强化成本管理迫在眉睫。天津TJJJ电动车有限公司创新性应用目标成本法来管控成本,涵盖了技术设计、工艺优化、费用预算控制、材料管理、采购调达调控等全价值链范围的成本管控。天津TJJJ电动车有限公司的目标成本法在实施过程中,整合了价值链管理、成本领先战略、作业分析、“五力”模型分析、预算管理等管理会计方法,通过系统性降成本和特定性降成本两个方面的努力,取得了良好的成本管控效果,有效提升了企业的价值创造。

关键词：目标成本法增值作业成本领先战略价值链管理

基于主要滋味成分指纹图谱和化学计量学鉴别海南不同地区咖啡豆

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热带作物学报 2024年第5期45卷 1007-1020页

作者：翟慧楠于菲唐玉妹董文江李亚男胡荣锁宁夏大学食品与葡萄酒学院宁夏银川750021 中国热带农业科学院香料饮料研究所海南万宁571533 云南省农业科学院热带亚热带经济作物研究所云南保山678000 海南省特色热带作物适宜性加工与品质控制重点实验室海南万宁571533 国家重要热带作物工程技术研究中心海南万宁571533

本研究对海南不同产地6种咖啡豆即兴隆咖啡(XL)、福山咖啡(FS)、琼海咖啡(QH)、白沙陨石岭咖啡(YSL)、母山1号咖啡(MS1)、母山2号咖啡(MS2)的主要滋味特征成分进行研究,比较不同产地咖啡烘焙豆间滋味特征成分组成和含量的差异性。基于... 详细信息

本研究对海南不同产地6种咖啡豆即兴隆咖啡(XL)、福山咖啡(FS)、琼海咖啡(QH)、白沙陨石岭咖啡(YSL)、母山1号咖啡(MS1)、母山2号咖啡(MS2)的主要滋味特征成分进行研究,比较不同产地咖啡烘焙豆间滋味特征成分组成和含量的差异性。基于主要滋味成分指纹图谱对海南6种咖啡豆的化学表征,研究产地对咖啡滋味特征成分的影响,并对6种咖啡进行区分。采用超高效液相色谱法测定6种咖啡豆中8种绿原酸、咖啡因、葫芦巴碱以及8种有机酸的含量;采用离子交换色谱-脉冲安培法测定咖啡样品中单糖的组成及含量;利用全自动氨基酸分析仪测定样品中氨基酸组成及含量。研究结果表明:6种咖啡的滋味成分含量差异显著,咖啡因和葫芦巴碱含量均在母山2号(MS2)咖啡豆中最高,在母山1号(MS1)中最低。氨基酸含量在琼海(QH)豆中最高,绿原酸和单糖含量在琼海(QH)豆中最低。绿原酸在6种咖啡烘焙豆中的含量顺序依次为:咖啡酰奎宁酸(CQAs)>阿魏酰奎宁酸(FQAs)>二咖啡酰奎宁酸(diCQAs)。6种咖啡样品中只有8种单糖组分被检测到,其中半乳糖含量最高。结合主成分分析(PCA)和偏最小二乘判别分析(PLS-DA)化学计量学分析,成功将6种咖啡区分,其中兴隆咖啡、白沙陨石岭咖啡和母山二号咖啡间具有较高的相似性,表明基于主要滋味化学组分含量可用于鉴别海南不同产地咖啡。结果证明,通过主要滋味成分指纹图谱能够对不同产地咖啡进行良好区分。该研究揭示了不同产地咖啡的化学组成及品质特征,对咖啡风味品质提升及对优质产品的筛选和鉴别具有重要意义。

关键词：咖啡豆产地溯源指纹图谱化学计量学

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郑州市夏季PM_(2.5)中二次无机组分污染特征及其影响因素

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环境科学 2024年第1期45卷 36-47页

作者：和兵杨洁茹徐艺斐袁明浩翟诗婷赵长民王申博张瑞芹河南省郑州生态环境监测中心郑州450000 郑州大学化学学院郑州450001 郑州大学环境科学研究院郑州450001 郑州大学生态与环境学院郑州450001

硝酸根(NO_(3)^(-))、硫酸根(SO_(4)^(2-))和铵根离子(NH4+)是PM_(2.5)中重要组分,研究三者的污染特征及其影响因素对空气质量的持续改善至关重要.于郑州市2020年夏季利用一系列在线PM_(2.5)化学组分仪器开展连续观测.结果表明,郑州市2... 详细信息

硝酸根(NO_(3)^(-))、硫酸根(SO_(4)^(2-))和铵根离子(NH4+)是PM_(2.5)中重要组分,研究三者的污染特征及其影响因素对空气质量的持续改善至关重要.于郑州市2020年夏季利用一系列在线PM_(2.5)化学组分仪器开展连续观测.结果表明,郑州市2020年夏季ρ(PM_(2.5))平均值为(28±13)μg·m^(-3),呈现夜间高白天低的日变化特征.ρ(NO_(3)^(-))、ρ(SO_(4)^(2-))和ρ(NH_(4)^(+))的平均值分别为(7.8±6.7)、(7.2±3.7)和(5.5±3.1)μg·m^(-3),在PM_(2.5)中的占比分别达到22%、21%和16%.分析不同情景下组分变化规律发现,随着PM_(2.5)浓度的上升,NO_(3)^(-)在PM_(2.5)中的占比上升,达到27%;随着O_(3)浓度的上升,SO_(4)^(2-)的占比上升,达到23%;低风速、高湿度、低温和降雨时段NO_(3)^(-)和NH4+的占比增大;高温条件下SO_(4)^(2-)的占比增大;NO_(3)^(-)的浓度和占比呈夜间高白天低的日变化特征,SO_(4)^(2-)则反之.NH_(4)NO_(3)的气粒分配过程是影响PM_(2.5)中NH_(4)^(+)和NO_(3)^(-)浓度的主要因素.结合热力学模型探究气象参数、气溶胶含水量和pH值的影响,结果表明低温、高湿和高气溶胶含水量浓度有利于HNO_(3)和NH_(3)向颗粒相分配;高pH值有利于HNO_(3)向NO_(3)^(-)分配,但是不利于NH3向NH4+分配.上述规律部分解释了不同情景下PM_(2.5)中NO_(3)^(-)的浓度和占比的上升.

关键词：化学组分二次无机气溶胶天气过程颗粒物pH值气粒平衡

Cryo-electron microscopy reconstructions of two types of wild rabbit hemorrhagic disease viruses characterized the structural features of Lagovirus

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Protein & Cell 2010年第1期1卷 48-58页

作者： Zhongjun Hu Xiaojuan Tian Yujia zhai Wei Xu Dong Zheng fei Sun National Laboratory of Biomacromolecules Institute of BiophysicsChinese Academy of SciencesBeijing 100101China Department of Biochemistry and Molecular Biology College of Life SciencesBeijing Normal UniversityBeijing 100875China

Rabbit hemorrhagic disease was described in China in 1984 and can cause hemorrhagic necrosis of the liver within two or three days after *** etiological agent,rabbit hemorrhagic disease virus(RHDV),belongs to the Lagovirus genus in the Caliciviridae *** to other calicivirus,such as rNV and SMSV,the structure of Lagovirus members is not well *** this report,structures of two types of wild RHDV particles,the intact virion and the core-like particle(CLP),were reconstructed by cryo-electron microscopy at 11Åand 17Å,*** is the first time the 3D structure of wild caliciviruses CLP has been provided,and the 3D structure of intact RHDV virion is the highest resolution structure in *** of the intact virion and CLP structures clearly indicated that CLP was produced from the intact virion with the protrusion *** contrast with the crystal structures of recombinant Norovirus and San Miguel sea lion virus,the capsomers of RHDV virion exhibited unique structural features and assembly *** P1 and P2 subdomains have interactions inside the AB capsomer,while only P2 subdomains have interaction inside CC *** pseudo atomic models of RHDV capsomers were constructed by homology modeling and density map fitting,and the rotation of RHDV VP60 P domain with respect to its S domain,compared with SMSV,was ***,our cryo-electron microscopic studies of RHDV provide close insight into the structure of Lagovirus,which is important for functional analysis and better vaccine development in the future.

关键词： rabbit hemorrhagic disease virus calicivirus Lagovirus core-like particle cryo-electron microscopy reconstruction

Thiabendazole inhibits ubiquinone reduction activity of mitochondrial respiratory complex Ⅱ via a water molecule mediated binding feature

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Protein & Cell 2011年第7期2卷 531-542页

作者： Qiangjun Zhou Yujia zhai Jizhong Lou Man Liu Xiaoyun Pang fei Sun National Laboratory of Biomacromolecules Institute of BiophysicsChinese Academy of SciencesBeijing 100101China Graduate School of the Chinese Academy of Sciences Beijing 100080China

The mitochondrial respiratory complex Ⅱ or succinate:ubiquinone oxidoreductase(SQR)is a key membrane complex in both the tricarboxylic acid cycle and aerobic *** disinfectant compounds were investigated with their potent inhibition effects on the ubiquinone reduction activity of the porcine mitochondrial SQR by enzymatic assay and *** structure of the SQR bound with thiabendazole(TBZ)reveals a different inhibitor-binding feature at the ubiquinone binding site where a water molecule plays an important *** obvious inhibitory effect of TBZ based on the biochemical data(IC50~100μmol/L)and the significant structure-based binding affinity calculation(~94μmol/L)draw the suspicion of using TBZ as a good disinfectant compound for nematode infections treatment and fruit storage.

关键词： mitochondrial respiratory complexⅡ thiabendazole pentachlorophenol inhibition crystallography

Synthesis of Mesostructured Iron Oxides with Potential As(V) Adsorption Application

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Chemical Research in Chinese Universities 2012年第4期28卷 559-562页

作者： LI fei-hu FU Xiao-ru HUANG Jie zhai Jian-ping Jiangsu Provincial Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044P.R.China State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210046P.R.China

Mesostructured iron oxides（MIOs） were nanocasted from a plugged hexagonal templated silica（PHTS） with a Brunauer-Emmett-Teller（BET） surface area of 694 m 2 /*** of X-ray diffraction（XRD）,transmission electron microscopy（TEM） and N 2 adsorption-desorption suggest that the nanocasted MIOs are synthetic hematite（α-Fe2O3） with a wormhole-like mesoporous ***（V） adsorption test shows that the selected MIO—MIO-500（calcinated at 500 °C） with a BET surface area of 82 m^ 2 /g has a maximum adsorption capacity of 5.39 mg/g for As（V）,which is 2.5 times as large as that of natural hematite *** study suggests that MIOs could be potentially used as the adsorbent of As（V） in wastewater.

关键词： Mesostructured iron oxide Plugged hexagonal templated silica(PHTS) Nanocasting Arsenate Adsorption

Synthesis, Structure and Highly Enhanced Phosphorescence of a Cadmium (Ⅱ) Coordination Polymer Assembled with 1,4-Naphthalenedicarboxylic Acid and 2-Propylimidazole

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Chinese Journal of Structural Chemistry 2021年第2期40卷 187-192,146页

作者： CHANG Xin-Hong YANG Xiao-Gang zhai Zhi-Min CHEN Jia-Yi LI fei-fei College of Chemistry and Chemical Engineering Luoyang Normal UniversityLuoyang 471934China College of Chemistry and Chemical Engineering Henan Polytechnic UniversityJiaozuo 454000China

One cadmium(Ⅱ)coordination polymer[Cd(1,4-NDC)(PPIM)_(2)]_(n)(1,1,4-H_(2)NDC=1,4-na-phthalenedicarboxylic acid,PPIM=2-propylimidazole),has been synthesized under hydrothermal conditions and structurally characterized by elemental analysis,TGA and X-ray single-crystal *** 1 crystallizes in monoclinic with space group P2_(1)/n,a=8.8292(2),b=16.6936(4),c=16.7869(4)Å,β=99.701(2)°,V=2438.86(10)Å^(3),Z=4,Dc=1.489 Mg/m^(3),F(000)=1112,μ=0.932 mm^(–1),S=1.076,the final R=0.0360 and wR=*** 1,the 1,4-NDC ligand bridges the Cd(Ⅱ)to form a 1D infinite chain,which are connected through N–H···O hydrogen bond to form a 2D layer then to an overall 3D supramolecular *** time-resolved measurements indicate that 1 shows highly prolonged phosphorescent lifetime about 452 times in comparison with that of pristine PPIM ***-crystal analysis and theory calculations indicate that strong coordination bonds and complete separation of HOMOs and LUMOs in the rigid matrix of 1 promote the long-last phosphorescence emission.

关键词： coordination polymer crystal structure room temperature phosphorescence theory calculations