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Journal of Environmental Sciences 2024年第6期140卷 37-45页

作者： Zaiyong Jiang Hao Li zhimin yuan Zheng Wang Maohong Fan Wenkang Miao Hong He State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Chemistry&Chemical Engineering and Environmental Engineering Weifang UniversityWeifangShandong 261061China Departments of Chemical and Petroleum Engineering University of WyomingLaramieWY 82071USA Materials Genome Institute Shanghai UniversityShanghai 200444China

Constructing own oxygen vacancies in the photocatalysts is a very promising method to improve their photocatalytic CO_(2)reduction ***,some catalysts have excellent stabilities,making it difficult for them to construct their own oxygen *** simplify the above difficulty of stable photocatalysts,constructing extrinsic oxygen vacancies on their surface as a novel idea is ***,a stable TiO_(2)nanosheet is chosen as a research object,we uniformly deposited BiOCl quantum dots on their surface via a simple adsorption-deposition *** is found that BiOCl quantum dots are able to simultaneously self-transform into defective BiOCl with many oxygen vacancies when the photocatalyst is performed photocatalytic CO_(2)*** extrinsic oxygen vacancies can act as“CO_(2)and photo-generated electrons reservoirs”to improve CO_(2)capture and accelerate the separation of photogenerated electrons and *** the above reasons,the modified TiO_(2)showed obvious enhancement of photocatalytic CO_(2)reduction compared to pristine TiO_(2)and *** work may open a new avenue to broaden the use of oxygen vacancies in the process of photocatalytic CO_(2)reduction.

关键词： Oxygen vacancy BiOCl Photocatalyst CO_(2)reduction TiO_(2)

西安市体检人群幽门螺杆菌感染与胃肠道肿瘤的相关研究

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公共卫生与预防医学 2024年第1期35卷 104-108页

作者：贺林慕玉东孙英袁志敏袁军陕西省肿瘤医院检验科陕西西安710061 陕西省人民医院检验科陕西西安710068

目的分析西安市体检人群幽门螺杆菌(Helicobacter pylori,Hp)感染的空间分布及其与胃肠道肿瘤的关联,为该地区胃肠道肿瘤预防提供参考。方法以2019年1月至2023年1月于西安市25家公立医院进行体检的23200例体检者为研究对象,通过医院信... 详细信息

目的分析西安市体检人群幽门螺杆菌(Helicobacter pylori,Hp)感染的空间分布及其与胃肠道肿瘤的关联,为该地区胃肠道肿瘤预防提供参考。方法以2019年1月至2023年1月于西安市25家公立医院进行体检的23200例体检者为研究对象,通过医院信息系统(Hospital Information System,HIS)导出体检者的基本信息,所有体检者均接受13 C-呼气试验和胃肠镜检查,应用ArcGIS软件绘制西安市Hp感染统计地图进行空间自相关分析,分析胃肠道肿瘤患者Hp的感染情况。结果人群中Hp感染10858例,感染率为46.80%;其中男性5491例,感染率为46.60%,女性5367例,感染率为47.01%,性别之间感染率差异无统计学意义(P>0.05)。30~岁组和20~岁组Hp感染率较高,分别为55.62%和42.71%,感染率随年龄变化呈先升高后随下降趋势(X_(趋势)^(2)=6201.21、6945.22,P<0.001)。西安市各行政区县体检人群Hp感染率空间分布全局空间正相关,存在空间聚集性(Moran′s I=0.14,P=0.02)。局部空间自相关显示5个区县呈现高-高聚集。共检出胃肠道肿瘤418例,检出率为1.80%,其中胃癌156例,Hp感染率85.90%,胃黏膜相关淋巴组织淋巴瘤106例,Hp感染率83.02%,结肠癌98例,Hp感染率80.61%,直肠癌58例,Hp感染率84.48%,差异均有统计学意义(X_(趋势)^(2)=13.49、16.16、17.27、24.66,P<0.05)。结论西安市体检人群Hp感染分布存在空间聚集特征且与胃肠道肿瘤相关,建议针对重点区域人群开展Hp感染宣教,预防胃肠道肿瘤的发生。

关键词：幽门螺杆菌胃肠道肿瘤空间分布

慢性肾脏病患者身体成分与冠状动脉钙化的相关性

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中华心血管病杂志 2024年第6期52卷 676-683页

作者：韩佳瑾高静伟徐振健袁智敏汤颖张海峰陈样新王景峰刘品明中山大学孙逸仙纪念医院心内科广州510120 中山大学孙逸仙纪念医院肾内科广州510120 中山大学孙逸仙纪念医院临床营养科广州510120 广州市第一人民医院南沙医院超声医学科心电图室广州511457 南方医科大学第三附属医院肾内科广州510630

目的探讨慢性肾脏病(CKD)患者身体成分与冠状动脉钙化的相关性。方法本研究为横断面研究,收集中山大学孙逸仙纪念医院2019年5月至2022年4月住院治疗的CKD患者的临床资料,采用生物电阻抗分析法获得骨骼肌量指数和内脏脂肪面积,采用多层螺... 详细信息

目的探讨慢性肾脏病(CKD)患者身体成分与冠状动脉钙化的相关性。方法本研究为横断面研究,收集中山大学孙逸仙纪念医院2019年5月至2022年4月住院治疗的CKD患者的临床资料,采用生物电阻抗分析法获得骨骼肌量指数和内脏脂肪面积,采用多层螺旋CT检测冠状动脉钙化程度。根据有无冠状动脉钙化发生分为冠状动脉钙化组和无冠状动脉钙化组,分别根据骨骼肌量指数和内脏脂肪面积三分位数进行分组(由低至高:T1、T2和T3)。根据限制性立方样条图的结果,将骨骼肌量指数≤30.4%定义为低骨骼肌量,内脏脂肪面积≥80.6 cm^(2)定义为高内脏脂肪,并以此为切点将研究对象分为以下4种表型:身体成分正常、低骨骼肌量、高内脏脂肪、低骨骼肌量伴高内脏脂肪。采用Spearman相关性分析和logistic回归分析CKD患者骨骼肌量指数、内脏脂肪面积与冠状动脉钙化的相关性。结果共纳入CKD患者107例,年龄(60.0±14.1)岁,其中女性41例(38.3%)。冠状动脉钙化组的骨骼肌量指数低于无冠状动脉钙化组[(32.0±4.8)比(34.3±4.8),P=0.016],内脏脂肪面积高于无冠状动脉钙化组[(70.8±32.6)cm^(2)比(47.9±23.8)cm^(2),P<0.001]。骨骼肌量指数中T3组的冠状动脉钙化检出率[17(48.6%)比28(77.8%)]及积分[0.5(0,124.0)比12.0(0.3,131.0)]均低于T1组(P<0.05)。内脏脂肪面积中T1组的冠状动脉钙化检出率[14(40.0%)比29(80.6%)]及积分[0(0,3.0)比37.0(2.0,131.0)]均低于T3组(P<0.05)。低骨骼肌量和低骨骼肌量伴高内脏脂肪患者的冠状动脉钙化检出率[11(78.6%)比33(47.8%);15(83.3%)比33(47.8%)]及积分[31.1(0.8,175.8)比0(0,16.4);27.6(6.4,211.4)比0(0,16.4)]均高于身体成分正常的患者(P<0.05)。Spearman相关分析显示,骨骼肌量指数与冠状动脉钙化积分(r=-0.212,P=0.028)呈负相关,内脏脂肪面积与冠状动脉钙化积分(r=0.408,P<0.001)呈正相关。多因素logistic回归分析显示,骨骼肌量指数升高是冠状动脉钙化检出率的负相关因素(T2:OR=0.208,95%CI:0.056~0.770,P=0.019;T3:OR=0.195,95%CI:0.043~0.887,P=0.034),内脏脂肪面积减少是冠状动脉钙化检出率的负相关因素(T1:OR=0.256,95%CI:0.071~0.923,P=0.037;T2:OR=0.263,95%CI:0.078~0.888,P=0.031)。低骨骼肌量、低骨骼肌量伴高内脏脂肪是冠状动脉钙化检出率的正相关因素(OR=6.616,95%CI:1.383~31.656,P=0.018;OR=5.548,95%CI:1.062~28.973,P=0.042)。结论CKD患者骨骼肌量指数下降、内脏脂肪面积增加与冠状动脉钙化的发生及其严重程度密切相关。

关键词：身体成分慢性肾脏病冠状动脉钙化肌少症肥胖骨骼肌量内脏脂肪体重指数

Constructing thermoresponsive PNIPAM-based microcarriers for cell culture and enzyme-free cell harvesting

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Chinese Chemical Letters 2024年第7期35卷 412-416页

作者： Yunan yuan zhimin Luo Jie Chen Chaoliang He Kai Hao Huayu Tian CAS Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China Jilin Biomedical Polymers Engineering Laboratory Changchun 130022China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China

The development of large-scale cell cultivation and non-invasive cell harvesting is highly desired in various fields,including biological regeneration and pharmaceutical *** using traditional microcarriers for cell culture,trypsinization is often necessary during cell collection,leading to partial cells *** this work,we developed a thermoresponsive glass microcarrier modified with poly(γ-propargyl-L-glutamate)(PPLG)and poly(N-isopropylacrylamide)(PNIPAM).We utilized these microcarriers for three-dimensional cell culture and enzyme-free cell harvesting,and the results indicated that the prepared microcarriers exhibited excellent non-invasive cell culture performance.

关键词： Microcarrier Temperature-responese PNIPAM Polymers Cell culture

NAA预处理对三角梅水培和基质培扦插生根的影响

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热带农业科学 2024年第6期44卷 43-47页

作者：杜学林张丽华陆毅妍袁志民温志广州市林业和园林科学研究院广东广州510405 广州市生态园林科技协同创新中心广东广州510405

为探究更加高效、环保的三角梅繁殖方法,以樱花三角梅(Bougainvillea peruviana ‘Imperial Delight’)半木质化枝条为试验材料,比较研究生长调节剂NAA预处理对三角梅水培和基质培扦插生根的影响。结果表明:200 mg/L NAA预处理能促进三... 详细信息

为探究更加高效、环保的三角梅繁殖方法,以樱花三角梅(Bougainvillea peruviana ‘Imperial Delight’)半木质化枝条为试验材料,比较研究生长调节剂NAA预处理对三角梅水培和基质培扦插生根的影响。结果表明:200 mg/L NAA预处理能促进三角梅水培和基质培扦插生根;但在相同NAA浓度下,基质培各组生根率均高于水培组,且生根数及根长情况也优于水培组;根粗细及颜色与扦插方式无关。说明200 mg/L的NAA适合‘樱花’三角梅扦插繁殖;同时,水培扦插方式还需进一步优化。

关键词：三角梅 NAA 水培基质培

Low-firing and temperature stability regulation of tri-rutile MgTa_(2)O_(6)microwave dielectric ceramics

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International Journal of Minerals,Metallurgy and Materials 2024年第8期31卷 1935-1943页

作者： Chengzhi Xu Hongyu Yang Hongcheng Yang Linzhuang Xing yuan Wang zhimin Li Enzhu Li Guorui Zhao School of Advanced Materials and Nanotechnology Xidian UniversityXi’an 710071China Academy of Advanced Interdisciplinary Research Xidian UniversityXi’an 710071China School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500China National Engineering Research Center of Electromagnetic Radiation Control Materials and Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 610054China Songshan Lake Materials Laboratory A1 Building University Innovation ParkDongguan 523808China

A glass frit containing Li_(2)O-MgO-ZnO-B_(2)O_(3)-SiO_(2)component was used to explore the low-temperature sintering behaviors and microwave dielectric characteristics of tri-rutile MgTa_(2)O_(6)ceramics in this *** good low-firing effects are presented due to the high matching relevance between Li_(2)O-MgO-ZnO-B_(2)O_(3)-SiO_(2)glass and MgTa_(2)O_(6)*** pure tri-rutile MgTa_(2)O_(6)structure remains unchanged,and high sintering compactness can also be achieved at 1150℃.We found that the Li_(2)O-MgO-ZnO-B_(2)O_(3)-SiO_(2)glass not only greatly improves the low-temperature sintering characteristics of MgTa_(2)O_(6)ceramics but also maintains a high(quality factor(Q)×resonance frequency(f))value while still improving the temperature ***,great microwave dielectric characteristics when added with 2wt%Li_(2)O-MgO-ZnO-B_(2)O_(3)-SiO_(2)glass can be achieved at 1150℃:dielectric constant,ε_(r)=26.1;Q×f=34267 GHz;temperature coefficient of resonance frequency,τ_(f)=-8.7×10^(-6)/℃.

关键词： MgTa_(2)O_(6) ceramic microwave dielectric characteristics glass

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山楂有机酸研究进展

果树资源学报 2024年第3期5卷 104-108页

作者：袁志敏崔克强赵士粤何美美任瑞杨明霞山西农业大学园艺学院山西太谷030801 山西农业大学果树研究所山西太原030031 农业农村部都市农业重点实验室上海200240

有机酸在植物发育,特别是在果实发育和成熟过程中起着非常重要的作用,山楂中含有很多种有机酸,山楂的品种和地区不同,有机酸含量和种类存在明显的差异。有机酸是衡量水果风味和营养品质的重要指标,直接影响山楂及其制品的品质。随着研... 详细信息

有机酸在植物发育,特别是在果实发育和成熟过程中起着非常重要的作用,山楂中含有很多种有机酸,山楂的品种和地区不同,有机酸含量和种类存在明显的差异。有机酸是衡量水果风味和营养品质的重要指标,直接影响山楂及其制品的品质。随着研究人员对有机酸研究的逐渐深入,以近年来国内外科研报道为基础,对山楂中主要的有机酸成分、提取工艺以及几种测定方法进行了综述,以期为山楂中有机酸的研究提供一些参考。

关键词：山楂有机酸提取工艺测定方法

Monitoring Soil Microbial Activities in Different Cropping Systems Using Combined Methods

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Pedosphere 2017年第1期27卷 138-146页

作者： yuan zhimin LIU Haijun HAN Jun SUN Jingjing WU Xiaoying YAO Jun School of Energy & Environmental Engineering National International Cooperation Base on Environment and EngeryUniversity of Science and Technology Beijing School of Resources and Environment Anqing Normal University School of Water Resource and Environmental Engineering Sino-Hungarian Joint Laboratory of Environmental Science and HealthChina University of Geosciences

Cropping activities may affect soil microbial activities and biomass,which would affect C and N cycling in soil and thus the crop yields and *** the present study,a combination of microcalorimetric,enzyme activity(sucrase,urease,catalase,and fluorescein diacetate hydrolysis),and real-time polymerase chain reaction(RT-PCR) analyses was used to investigate microbial status of farmland soils,collected from 5 different sites in Huazhong Agriculture University,*** results showed that among the 5sites,both positive and negative impacts of cropping activities on soil microbial activity were *** activity analysis showed that cropping activities reduced soil sucrase and urease activities,which would influence the C and N cycles in *** more attentions should be given to microbial status affected by cropping activities in *** to the correlation analysis,fluorescein diacetate hydrolysis showed a significantly(P < 0.05) negative correlation with the time to reach the maximum power output(R ——0.898),but a significantly(P < 0.05) positive correlation with bacterial gene copy number(R = 0.817).Soil catalase activity also showed a significantly(P < 0.05) positive correlation with bacterial gene copy number(R = 0.965).Using combined methods would provide virtual information of soil microbial status.

关键词： cropping activity enzyme activity fluorescein diacetate hydrolysis microbial biomass microealorimetric analysis real-time polymerase chain reaction

PSO-based Parameter Tuning for a TwoDegree-of-Freedom IMC Scheme and Its Application to Paper Basis Weight Control

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Paper And Biomaterials 2019年第4期4卷 57-63页

作者： Wei Tang zhimin yuan Wenjuan Shan MdMuhie Menul Haque College of Electrical and Information Engineering Shaanxi University of Science&TechnologyXi’anShaanxi Province710021China Beijing Zhongkexin Electronics Equipment Co. LtdBeijng100111China College of Light Industry Science and Engineering Shaanxi University of Science&TechnologyXi’anShaanxi Province710021China

Basis weight is an important indicator for evaluating paper quality and a major factor directly affecting the economic benefits of *** on the large time-delay,time-varying,and nonlinear characteristics of a basis weight control system,a two-degree-of-freedom(TDF)internal model control(IMC)method based on a particle swarm optimization(PSO)algorithm was *** method took the integral of time multiplied by the absolute error(ITAE)as the objective function,and the PSO algorithm was used to optimize the time constant of the tuning IMC *** simulation results for the control system under the proposed TDF-IMC method based on the PSO algorithm demonstrate good set-point tracking performance,strong anti-interference capabilities,and good robustness *** application results revealed that the basis weight fluctuation range of the paper was±2 g/m2,which significantly improved both the control quality and the product quality.

关键词： basis weight control system large time delay IMC two-degreeof freedom control PSO algorithm

Two-dimensional ultrathin vanadium oxide nanosheets as catalytic bactericide

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Science China Materials 2024年第9期67卷 2965-2976页

作者： zhimin Zhang Zhao Guo Zesong Ruan Min Ge Shibo Cao Jiayi yuan Zhen Xu Lieying Fan Ming Zong Han Lin Jianlin Shi State Key Laboratory of High Performance Ceramics and Superfine Microstructures Shanghai Institute of Ceramics Chinese Academy of SciencesResearch Unit of Nanocatalytic Medicine in Specific Therapy for Serious DiseaseChinese Academy of Medical SciencesShanghai200050China Department of Orthopedic Surgery Shanghai Institute of Microsurgery on ExtremitiesShanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200233China Department of Clinical Laboratory Shanghai East HospitalTongji University School of MedicineShanghai200120China Department of Electrical and Electronic Engineering The University of Hong KongHong KongChina Shanghai Tenth People’s Hospital Shanghai Frontiers Science Center of Nanocatalytic MedicineSchool of MedicineTongji UniversityShanghai200331China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China

Infectious diseases caused by pathogenic bacteria are a serious threat to global public ***,antibiotics and other clinical drugs suffer from some fundamental disadvantages such as narrow-spectrum antibacterial effect and the risk to induce drug resistance,while inorganic functional nanomaterials with biological catalytic activities have been developed as novel antibacterial *** this study,we prepared two-dimensional ultrathin vanadium oxide nanosheets(VO_(x)NSs)with mixed valence states from the oxidised layer of vanadium powder(bulk V)by ultrasonically assisted liquid *** conveniently switching between V^(IV)and V^(V),VO_(x)NSs can efficiently catalyse H_(2)O_(2)enriched in bacterially infected areas to generate hydroxyl radicals(·OH),which induce bacterial oxidative stress and *** process can occur in both weakly alkaline and acidic environments,thus being independent of the pH value in infection *** addition,contributed by the intrinsic characteristics of vanadium,two-dimensional morphology and reasonable valence state ratios,VO_(x)NSs exhibit the advantages of broad antibacterial spectrum,high catalytic activity and non-toxic *** novel nanosheet offers a new strategy to heal infected wounds and extends the application of nanocatalytic medicine towards anti-infection.

关键词： ultrathin nanosheet vanadium oxide Fenton-like reaction antibacterial