检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

我国社会组织对MSM动员检测效果分析

中国艾滋病性病 2024年第5期30卷 503-507页

作者：金军怡李锦峰戴淑玉杨伟华郑雯琳桑健郑大澳王晓春沙莎冯子健中华预防医学会北京100062 中国疾病预防控制中心北京102206

目的分析2016-2022年我国参与艾滋病防治的社会组织MSM干预检测的成效与不足,为提升社会组织工作质量和能力提供参考。方法整理分析2016-2022年社会组织参与艾滋病防治基金(CAFNGO)项目管理信息系统中MSM干预项目数据,针对历年不同类型... 详细信息

目的分析2016-2022年我国参与艾滋病防治的社会组织MSM干预检测的成效与不足,为提升社会组织工作质量和能力提供参考。方法整理分析2016-2022年社会组织参与艾滋病防治基金(CAFNGO)项目管理信息系统中MSM干预项目数据,针对历年不同类型社会组织、不同地区MSM干预检测转化,HIV初筛阳性,HIV确证检测,HIV确证阳性和HIV确证阳性转介指标等产出进行分析。结果2016-2022年,全国共有567个社会组织参与CAFNGO MSM干预项目,其中民政部门登记的社会组织(NGO)159个,未在民政登记的社会组织(CBO)408个,覆盖了全国30个省(自治区、直辖市)。MSM干预项目的HIV初筛阳性率从2016年的5.49%到下降至2022年3.18%,而阳性转介治疗率从2017年的83.87%上升至2022年的94.93%。CBO项目的干预检测转化率、初筛阳性率和确证阳性率高于NGO的项目(P<0.05),NGO项目的确证检测率和阳性转介率均高于CBO项目(P<0.05)。华东、华北和东北检测人数较多,占项目检测总人数的64.80%(1089966/1681977),西北地区检测人数最少,占5.63%(94736/1681977)。西北地区项目的初筛阳性率为3.19%(3025/94736)、确证检测率76.96%(2328/3025)、确证阳性率2.36%(2236/94736),均低于平均水平(P<0.05)。结论社会组织通过动员干预检测工作,更多的阳性病例被发现,减少进一步的传播,发挥了其优势和作用,应继续加强对社会组织开展MSM干预工作的支持力度,在初筛阳性到确证检测的环节中,应减少脱失人数。NGO和CBO在防艾工作中发挥了各自的优势,需要加强对CBO的能力建设。在艾滋病疫情重点地区,有针对性地对不同类型社会组织提供技术支持和加强能力建设,推动社会组织均衡发展。

关键词：艾滋病男男性行为者社会组织检测

松辽盆地徐家围子断陷白垩系沙河子组深层致密气成藏机理及勘探突破

在线全文

学校读者我要写书评

暂无评论

中国石油勘探 2024年第1期29卷 130-141页

作者：姜洪福艾鑫罗光东耿长喜王延志李召兵李文龙余文学陈建国宫秀坤杨炜华郭晶陈海滨中国石油大庆油田钻探工程公司

松辽盆地徐家围子断陷沙河子组砂砾岩埋深大、岩性致密,目前对其成藏控制因素认识不足,且受投资成本和勘探开发技术的制约,沙河子组一直未能实现储量和产量的突破。使用地震、岩心、测井、录井及地质分析化验资料,从煤系烃源岩生烃潜力... 详细信息

松辽盆地徐家围子断陷沙河子组砂砾岩埋深大、岩性致密,目前对其成藏控制因素认识不足,且受投资成本和勘探开发技术的制约,沙河子组一直未能实现储量和产量的突破。使用地震、岩心、测井、录井及地质分析化验资料,从煤系烃源岩生烃潜力、致密砂砾岩展布、储集物性、地层超压等方面分析了沙河子组致密气成藏控制因素,力图寻找富气甜点、指导井位部署。结果表明,沙河子组储层与烃源岩叠置,致密非浮力成藏动力过程致使异常高压的出现,并造就了满盆含气的格局。沙河子组致密砂砾岩储层在纵横向上叠置发育,储层内部发育的多层高孔渗带成为致密砂砾岩气藏的“甜点”。在致密气成藏理论的指导下,精准刻画了优质富气“甜点”的分布并设计了最优气井轨迹,充分发挥地质工程一体化优势,以优快钻井和最优改造体积为目标,部署了宋深9-平5井,测试产量达106×10^(4)m^(3)/d,取得了沙河子组致密气藏的重大突破,为后期松辽盆地沙河子组致密气藏勘探开发带来了广阔的前景。

关键词：松辽盆地沙河子组致密气藏产能突破资源潜力

Robust Feedback Set Stabilization of Logic Networks with State-Dependent Uncertain Switching and Control Constraints

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2024年第2期37卷 629-646页

作者： DAI Chaoqun GUO Yuqian GUI weihua School of Automation Central South UniversityChangsha 410083China

This study investigates the robust feedback set stabilization of switched logic control networks(SLCNs)with state-dependent uncertain switching and control constraints.First,based on the properties of the semi-tensor product of matrices and the vector representation of logic,an SLCN with state-dependent uncertain switching and control constraints is expressed in algebraic form.Second,an input transformation and a switching model are constructed to transfer the original SLCN into one with a free control input and arbitrary switching.The equivalence between the set stabilizability of the original SLCN and that of the resulting SLCN is established.Based on such equivalence,the authors propose a necessary and sufficient condition for robust feedback set stabilizability.Finally,an example is presented to demonstrate the application of the results obtained.

关键词： Input transformation robust control invariant subset robust feedback set stabilizability semi-tensor product state-dependent constraints switched logic control network

A High-Contrast Autolysosome Probe for Detecting Interaction between Autophagosomes and Autolysosomes in Mitophagy

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2024年第8期42卷 858-866页

作者： weihua Wang Chu Han Shengjie Xie Zisong Cong Zixuan yang Yuxin Feng Limin Xiang Heng Song College of Chemistry and Molecular Sciences Wuhan UniversityWuhanHubei430072 China

Comprehensive Summary,Autophagy is a multi-step cell metabolism process in which cells remove damaged and unwanted materials.During autophagy,autophagosomes fuse with lysosomes to form autophagosomes.Autophagosomal membrane components are recycled from autolysosomes through the autophagosomal components recycling(ACR),while lysosomal components circulate on the autolysosomal surface through the autophagic lysosome reformation(ALR)process.Autolysosomes contain components from autophagosomes and lysosomes.However,whether there is a fusion between autolysosome and autophagosome or lysosome at the organelle level remains unknown.In this study,a pH and viscosity dual-controlled mitochondria-targeting fluorescent probe Mito-Q was designed based on an asymmetric norcyanine to achieve the high-contrast imaging of mitochondria-containing autolysosomes.Mito-Q not only effectively detected mitochondrial viscosity changes and mitophagy with high sensitivity,but more importantly,the fusion of mitochondria-containing autolysosomes and autophagosomes(FMAA)was observed during autophagy by the real-time confocal imaging of HeLa cells.

关键词： Mitophagy Autolysosomes Bioimaging Biosensors Fluorescence imaging

Iodine enrichment in the groundwater in South China and its hydrogeochemical control

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第8期142卷 226-235页

作者： Fengping Zhou Qianting Xu Yuyun Chen weihua Zhang Rongliang Qiu Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil RemediationSchool of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Shenzhen Research Institute Sun Yat-sen UniversityShenzhen 518057China Guangdong Provincial Key Laboratory of Agricultural&Rural Pollution Abatement and Environmental Safety School of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China

In North China,iodine-rich groundwater has been extensively studied,but few in South China.This study aimed to investigate the characteristics of iodine-rich groundwater in South China and identify potential contamination sources.The results revealed that the average concentration of iodine in groundwater was 890μg/L,with a maximumconcentration of 6350μg/L,exceeding the permitted levels recommended by the World Health Organization(5–300μg/L).Notably,the enrichment of iodide occurred in acidic conditions(pH=6.6)and a relatively low Eh environment(Eh=198.4 mV).Pearson correlation and cluster analyses suggested that the enrichment of iodide could be attributed to the intensified redox process involving Mn(II),iodine(I_(2)),or iodate(IO_(3)^(−))in the soil.The strong affinity between Mn(II)and I_(2)/IO_(3)^(−)facilitated their interaction,resulting in the formation and mobilization of I^(−)from the soil to the groundwater.Leaching experiments further confirmed that reducing substances(such as sodium sulfides,ascorbic acids,and fulvic acids)in the soil with low dissolved oxygen(DO)levels(3.8 mg/L)promoted the oxidation of I^(−)into I_(2)or IO_(3)^(−),leading to its stabilization.This research provides new insights into the characteristics and mechanisms of I^(−)enrichment in groundwater in South China,and emphasizes the significance of the redox reactions involving Mn(II)and I_(2)/IO_(3)^(−),as well as the influence of soil properties in regulating the occurrence and transportation of iodine species within groundwater systems.

关键词： Iodine enrichment Acid environment Groundwater South China Manganese

High-tenacity in-situ Ti/Zr-based bulk metallic glasses composites fabricated by industrial high-pressure die casting

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2024年第3期170卷 177-185页

作者： yang Li Wenbo Luo Ying Jin Zhiyong Xue Guiqing Wang Yanan Ren Haoxin Li Haibo Ke Baoan Sun weihua Wang Institute for Advanced Materials North China Electric Power UniversityBeijing 102206China Songshan Lake Materials Laboratory Dongguan 523808China Institute of Physics Chinese Academy of SciencesBeijing 100190China

The glass-forming ability and mechanical properties of metallic glasses and their composites are well known to be sensitive to the preparation conditions and are highly deteriorated by industrial preparing conditions such as low-purity raw materials and low vacuum.Here,we showed that a series of in-situ bulk metallic glass composites(BMGCs)which exhibit excellent ductility and segmental work hardening were successfully developed utilizing a high vacuum high-pressure die casting(HV-HPDC)technology along with industrial-grade raw materials.The tensile properties of these BMGCs are systematically investigated and correlated with the alloy microstructure.As compared with the copper mold suction casting method,the volume fraction difference of the dendrite phase for the BMGCs with the same composition is not significant when fabricated by the HV-HPDC,whereas the size of theβ-phase is generally larger.Insitu BMGCs with the composition of Ti_(48)Zr_(20)(V_(12/17)Cu_(5/17))19 Be 13 obtained by the HV-HPDC process show ductility up to 11.3%under tension at room temperature and exhibit a certain amount of work hardening.Two conditions need to be met to enable the BMGCs,which are prepared by vacuum die-casting to retain favorable ductility:(1)The volume fraction ofβphase stays below 62%±2%;(2)The equiaxed crystals with a more uniform size in the range of 5-10μm.Meanwhile,the results of the present study provided guidance for developing BMGCs with good ductile properties under industrial conditions.

关键词： Vacuum die casting Bulk metallic glass composites Mechanical properties β-phase

An Efficient Method to Estimate Admittance of Black-boxed Inverter-based Resources for Varying Operating Points

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2024年第1期10卷 421-426页

作者： weihua Zhou Bin Liu Nabil Mohammed Behrooz Bahrani Department of Electrical and Computer Systems Engineering Monash UniversityMelbourne 3800Australia Energy Centre Commonwealth Scientific and Industrial Research Organisation(CSIRO)Newcastle 2300Australia.He is now with the Network Planning DivisionTransgridSydney 2000Australia

Traditional analytical approaches for stability assessment of inverter-based resources(IBRs),often requiring detailed knowledge of IBR internals,become impractical due to IBRs’proprietary nature.Admittance measurements,relying on electromagnetic transient simulation or laboratory settings,are not only time-intensive but also operationally inflexible,since various non-linear control loops make IBRs’admittance models operating-point dependent.Therefore,such admittance measurements must be performed repeatedly when operating point changes.To avoid time-consuming and cumbersome measurements,admittance estimation for arbitrary operating points is highly desirable.However,existing admittance estimation algorithms usually face challenges in versatility,data demands,and accuracy.Addressing this challenge,this letter presents a simple and efficient admittance estimation method for blackboxed IBRs,by utilizing a minimal set of seven operating points to solve a homogeneous linear equation system.Case studies demonstrate this proposed method ensures high accuracy across various types of IBRs.Estimation accuracy is satisfying even when non-negligible measurement errors exist.

关键词： Admittance estimation black box inverterbased resource measurement error operating point

Fully distributed dynamic event-triggered formation-containment tracking for multiagent systems with multiple types of disturbances

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第1期67卷 168-186页

作者： weihua LI Huaguang ZHANG Juan ZHANG Rui WANG College of Information Science and Engineering Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University

This paper is dedicated to addressing the time-varying output formation-containment tracking(TVOFCT) problem for heterogeneous linear multiagent systems(MASs) with multiple types of disturbances under directed communication topology.The agents are divided into tracking leaders,formation leaders,and followers.In the output space,the formation leaders are required to form an expected geometric formation while tracking the tracking leader,and the followers are required to enter the convex hull spanned by formation leaders.First,a disturbance observer is designed to observe the disturbance with deterministic dynamics.Then,by combining adaptive technology with event-triggered technology,an independent fully distributed dynamic event-triggered(FDDET) compensator is designed to estimate the state of the tracking leader.The main advantages of this compensator lie in the following three aspects:(1) the adaptive weight does not increase unboundedly;(2) the interval time between events is expanded;(3) the design does not rely on any global information.Similar to the design of this compensator,an independent FDDET convex hull observer is further designed to observe the convex hull spanned by formation leaders.Subsequently,based on the designed disturbance observer,compensator,and convex hull observer,the adaptive disturbance rejection control input which can make the MASs achieve TVOFCT is formulated.Finally,a numerical simulation is provided to clearly verify the validity of the theoretical results.

关键词： formation-containment tracking disturbance rejection multiagent systems fully distributed control dynamic event-triggered control

我国社会组织开展男男同性性行为人群艾滋病干预工作现状

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国预防医学杂志 2024年第4期25卷 504-508页

作者：郑大澳沙莎王立立戴淑玉桑健李锦峰金军怡郑雯琳杨伟华王芃王晓春中国疾病预防控制中心北京102206 中华预防医学会

目的了解我国开展男男同性性行为人群(men who have sex with men,MSM)艾滋病干预工作的社会组织(MSM社会组织)现状,为促进MSM社会组织更好地开展艾滋病干预工作提供参考。方法采用定量研究方法,向2023年参与社会组织参与艾滋病防治基金... 详细信息

目的了解我国开展男男同性性行为人群(men who have sex with men,MSM)艾滋病干预工作的社会组织(MSM社会组织)现状,为促进MSM社会组织更好地开展艾滋病干预工作提供参考。方法采用定量研究方法,向2023年参与社会组织参与艾滋病防治基金(艾防基金)项目的MSM社会组织发放调查问卷,主要内容包括MSM社会组织基本情况、人员构成情况、外部机构合作情况以及开展艾滋病干预工作等情况。结果发放调查问卷243份,回收242份,回收率99.59%,覆盖30个省(自治区、直辖市),其中民政部门登记的MSM社会组织96个(39.67%)。民政部门登记与未登记的MSM社会组织拥有全职员工、志愿者人数差异有统计学意义(Z=5.80、5.70,P0.05)。结论MSM社会组织具有易接触MSM、服务内容较为完善、形式多样、灵活性高等优势,应积极争取民政登记,增加与外部机构合作的机会,扩大组织自身的筹资渠道,促进MSM社会组织可持续发展。

关键词：艾滋病男男同性性行为人群社会组织干预