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“四全媒体”视域下社会治理现代化的机遇、挑战与应对

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社会治理 2024年第2期 35-46页

作者：崔海教王晓洁李文娟中国新闻出版研究院同济大学国家创新发展研究院

信息革命推动之下,媒体技术、产业形态、舆论生态不断演变和发展,党中央提出了全程媒体、全息媒体、全员媒体、全效媒体的“四全媒体”新时代发展要求。本文梳理了“四全媒体”的现实背景,探讨了“四全媒体”的概念内涵,分析了“四全媒... 详细信息

信息革命推动之下,媒体技术、产业形态、舆论生态不断演变和发展,党中央提出了全程媒体、全息媒体、全员媒体、全效媒体的“四全媒体”新时代发展要求。本文梳理了“四全媒体”的现实背景,探讨了“四全媒体”的概念内涵,分析了“四全媒体”的发展转向与时代特点。本文指出,在“四全媒体”视域下,媒体可以在扩充社会治理主体、拓宽社会治理渠道、推进社会治理全面提质增效等方面发挥积极作用,但由此也会带来信息安全挑战把关能力、“网络审判”挑战法律底线、潜在风险挑战社会稳定等诸多风险挑战。基于此,指出应该从提高政治站位、积极引导利用、有效加强监管、强化综合治理等方面入手,以“四全媒体”高质量发展推进社会治理现代化。

关键词：四全媒体媒体融合社会治理

Direct contact moxibustion promotes apoptosis of gastric cancer cells in rats by regulating intestinal flora

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Journal of Traditional Chinese Medicine 2021年第6期41卷 943-952页

作者： PAN Lijia MA Shuya WEN Jing ZHANG Xiaoqi XING haijiao JIA Chunsheng College of Acupuncture and Moxibustion Hebei University of Chinese MedicineShijiazhuang 050200China

OBJECTIVE:To examine whether direct contact moxibustion(DCM)can prevent and treat gastric cancer(GC)by regulating intestinal flora in ***:Male Wistar rats were randomly divided into normal group,normal+DCM control group,model group,and model+DCM *** cancer rats were induced by N-methyl-N-nitro-N-nitrosoguanidine(MNNG,20 mg/mL)by *** the same time,the model rats and normal rats were given DCM at Zusanli(ST36),Weishu(BL21),and Zhongwan(CV12)for 16 *** treatment,gastric tissues were collected to analyze the pathological changes and the apoptosis of gastric mucosa *** addition,the cecal stool was taken and analyzed by 16 s r RNA ***:Gastric cancer-like pathological changes and different abundance of the intestinal flora were found in the model *** promoted mucosa tissue apoptosis and regulated the abnormal changes of the intestinal microflora caused by MNNG;DCM also inhibited the growth of Ruminococcaceae and Prevotellaceae flora and promoted the growth of probiotic ***,DCM made the composition and abundance of intestinal microflora in the GC rats tending to the normal ***:DCM stimulating Zusanli(ST36),Weishu(BL21),and Zhongwan(CV12)promoted the apoptosis of gastric mucosa and delayed the progression of gastric cancer,possibly by decreasing Ruminococcaceae and Prevotellaceae bacteria(bacteria that produce short-chain fatty acids in the intestine)and promoting the growth of probiotic Akkermansia.

关键词： moxibustion methylnitronitrosoguanidine stomach neoplasms gastrointestinal microbiome

汽轮机发电机组宽频带阻抗建模及次/超同步振荡分析

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中国电力 2024年第7期57卷 238-246页

作者：赵牧驰汪海蛟刘纯何国庆孙艳霞王盼盼可再生能源并网全国重点实验室(中国电力科学研究院有限公司) 北京100192

基于阻抗的建模与分析方法是目前分析和解决新能源并网宽频带振荡问题的有效工具之一。集中开发远距离输送是中国新能源开发利用的重要形式,在新能源基地的发电装备中,风光发电装备的阻抗模型已经较为完善,但是现有汽轮发电机组的宽频... 详细信息

基于阻抗的建模与分析方法是目前分析和解决新能源并网宽频带振荡问题的有效工具之一。集中开发远距离输送是中国新能源开发利用的重要形式,在新能源基地的发电装备中,风光发电装备的阻抗模型已经较为完善,但是现有汽轮发电机组的宽频带阻抗模型均存在一定的简化,不能完整地反映汽轮发电机组的宽频带阻抗特性。基于频域小信号建模方法,建立了计及原动机、调速器、励磁系统、轴系和同步机的汽轮发电机宽频阻抗模型,在Matlab/Simulink中建立了汽轮发电机的仿真模型,通过扫频验证了所提模型的正确性,分析了不同环节对阻抗的影响,最后以汽轮发电机组经串联补偿装置并网系统为例,验证了所提模型在次/超同步振荡问题分析上的有效性。

关键词：阻抗建模汽轮发电机次同步振荡轴系建模串联补偿

机械通气ICU获得性衰弱患者早期运动康复的最佳证据总结

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中华危重病急救医学 2024年第7期36卷 745-752页

作者：孙瑞祥江海娇汪君余金甜周全方可次彩哲安徽省呼吸危重症急救中心皖南医学院第一附属医院重症医学科安徽芜湖241000 河北医科大学第三医院心血管内科石家庄050000

目的运用循证的方法整合机械通气ICU获得性衰弱(ICU-AW)患者早期康复的最佳证据,为机械通气ICU-AW患者早期运动治疗规范化评估和干预提供循证依据。方法系统检索美国胸科协会(ATS)临床实践指南、加拿大安大略注册护士协会(RNAO)、国际... 详细信息

目的运用循证的方法整合机械通气ICU获得性衰弱(ICU-AW)患者早期康复的最佳证据,为机械通气ICU-AW患者早期运动治疗规范化评估和干预提供循证依据。方法系统检索美国胸科协会(ATS)临床实践指南、加拿大安大略注册护士协会(RNAO)、国际指南协作网(GIN)、加拿大医学会临床实践指南文库(CMACPGL)、BMJ最佳临床实践、UpToDate临床顾问、苏格兰校际指南网(SIGN)、美国国立医学图书馆PubMed数据库、Cochrane图书馆数据库、美国国立指南网(NGC)、荷兰医学文摘Embase数据库、护理和辅助医学文献累积索引(CINAHL)、UM图书馆数据库、物理治疗证据数据库(PEDro)、英国国家卫生与临床优化研究所(NICE)数据库、新西兰指南研究网(NZGG)、中国医脉通指南网站、中国知网、万方数据等中英文数据库、专业团队网站和指南网站有关机械通气ICU-AW患者早期运动康复的专家共识、指南、随机对照试验(RCT)、系统评价等证据,检索时限为建库至2023年12月31日。由2位评价员独立完成文献检索、筛选、评估、提取信息,并交叉核对,同时对纳入文献进行质量评价。结果共纳入21篇文献,其中指南5篇、系统评价5篇、专家共识4篇、RCT 7篇,整体证据等级均较高,均纳入分析。最终归纳总结为以评估筛查、运动安全标准、注意事项、运动时间的设定、运动强度、运动次序、运动内容推荐为核心的七大方面、32条最佳证据。结论总结机械通气ICU-AW患者早期运动康复的最佳证据,可为此类患者早期运动康复规范化评估和干预提供循证依据;ICU医疗从业者需结合实际临床环境、患者个体差异和康复目标,为预防机械通气患者ICU-AW提供有针对性的健康指导和干预。

关键词： ICU获得性衰弱早期康复证据总结循证

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城市雨洪管理措施布局与优化研究综述

人民珠江 2024年第10期45卷 1-14页

作者：刘洁尚裕长张翔桂海娇成都大学建筑与土木工程学院四川成都610106 武汉大学海绵城市建设水系统科学湖北省重点实验室湖北武汉430072 武汉大学水资源工程与调度国家重点实验室湖北武汉430072

城市雨洪管理是国际研究热点和前沿,也是中国城市绿色发展的重大需求。在此背景下,中国大力推进海绵城市建设,但仍面临着诸多挑战,其中雨洪管理措施的空间布局优化对提高海绵城市的建设效果具有重要意义。通过分析国内外相关文献,阐明... 详细信息

城市雨洪管理是国际研究热点和前沿,也是中国城市绿色发展的重大需求。在此背景下,中国大力推进海绵城市建设,但仍面临着诸多挑战,其中雨洪管理措施的空间布局优化对提高海绵城市的建设效果具有重要意义。通过分析国内外相关文献,阐明了城市雨洪管理措施布局优化的相关定义与内容范畴,构建了雨洪管理措施布局优化问题前准备-模型算法-后评估-决策的全流程结构,系统地分析布局优化各步骤的相关信息,探究了当前该框架各部分的研究现状和差距,为实现更加科学的布局优化,提出了改进建议。基于前准备-模型算法-后评估-决策的全流程结构,开展城市雨洪管理措施空间布局优化,对促进中国海绵城市建设事业的发展具有重要的理论意义与实践价值。

关键词：海绵城市城市雨洪管理措施布局优化

Size and near-surface engineering in weak-oxidative confined space to fabricate 4 nm L1_(0)-PtCo@Pt nanoparticles for oxygen reduction reaction

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Nano Research 2023年第5期16卷 6622-6631页

作者： Yifei Liao Lishan Peng Chaoling Wu Yigang Yan haijiao Xie Yungui Chen Yao Wang Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengdu 610065China Department of Advanced Energy Materials College of Materials Science and EngineeringSichuan UniversityChengdu 610065China Engineering Research Center of Alternative Energy Materials&Devices Ministry of EducationChengdu 610065China School of Chemical Sciences The University of AucklandAuckland 1142New Zealand Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China Hangzhou Yanqu Information Technology Co. Ltd.Hangzhou 310003China

The near-surface structure of the Pt-based alloy including the surface and subsurface structures is prominent to their electrocatalytic *** the near-surface structure of PtCo intermetallics with small particle size could efficiently optimize the binding force between Pt and oxygen and finally enhance its oxygen reduction reaction(ORR)*** we simultaneously achieve the size controlling and surface modulation of intermetallic nanoparticles(NPs)in a weak-oxidative confined space with abundant uncoordinated oxygen atoms.1–2 atomic layers of concave Pt-rich surface were successfully constructed on 4 nm L1_(0)-PtCo core after removing Co–O species which is derived from the segregation of the subsurface Co to the surface induced by the uncoordinated oxygen *** to the elaborate structure,PtCo-1000/C catalyst shows significant improvement in both activity(1.290 A∙mg_(Pt)^(−1)and 1.529 mA∙cm_(Pt)^(−2) at 0.9 V *** hydrogen electrode(RHE))and stability(85.2%of initial mass activity after accelerated degression tests(ADTs))even the production is scaled up to gram *** functional theory calculations suggest that the cave Pt site optimizes the protonation of*O,which finally boosts the ORR performance.

关键词： near-surface engineering core–shell structure intermetallics oxygen reduction reaction

The dimension and morphology of alveolar bone at maxillaryanterior teeth in periodontitis: a retrospective analysis usingCBCT

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International Journal of Oral Science 2020年第1期12卷 50-58页

作者： Xue Zhang Yuchao Li Ziming Ge haijiao Zhao Lei Miao Yaping Pan Department of Periodontics School of StomatologyChina Medical UniversityShenyangChina

The morphology of the alveolar bone at the maxillary anterior teeth in periodontitis patients was evaluated by cone-beam computed tomography(CBCT) to investigate the distribution of alveolar defects and provide guidance for clinical practice. Ninety periodontitis patients and 30 periodontally healthy individuals were selected to determine the morphology of the alveolar bone at the maxillary anterior teeth according to the degree of bone loss, tooth type, sex and age. The differences in the dimensions between periodontitis patients and healthy individuals were compared, and the distribution of alveolar bone defects was analyzed.A classification system was established regarding the sagittal positions and angulations of the teeth. The buccal residual bone was thicker and the lingual bone was thinner in the periodontitis patients than in the periodontally healthy individuals, and there were differences between the different tooth types, sexes and age subgroups. The buccal undercut was close to the alveolar ridge, while fenestration was reduced and the apical bone height was higher in periodontitis patients than in periodontally healthy *** apical bone height increased with the aggravation of bone loss and age. The proportions of different sagittal positions changed with the aggravation of bone loss. Moreover, the teeth moved more buccally regarding the positions of the maxillary anterior *** morphology of the alveolar bone at the maxillary anterior teeth differed between periodontitis patients and healthy individuals,and the differences were related to the degree of bone loss, tooth type, sex and age.

关键词： alveolar CBCT positions

Phytoplankton communities and its controlling factors in summer and autumn in the southern Yellow Sea, China

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Acta Oceanologica Sinica 2015年第2期34卷 114-123页

作者： LIU haijiao HUANG Yajie ZHAI Weidong GUO Shujin JIN Hualong SUN Jun College of Marine Science and Engineering Tianjin University of Science and Technology Key Laboratory for Ecological Environment in Coastal Areas of State Oceanic Administration National Marine Environmental Monitoring Center Tianjin Key Laboratory of Marine Resources and Chemistry Tianjin University of Science and Technology

The phytoplankton water samples were collected in two multidisciplinary investigations which were carried out during summer（June） and autumn（November to December） of 2011. Phytoplankton species composition and abundance data were accomplished by Uterm？hl method. The phytoplankton community was dominated by diatoms and dinoflagellates in the southern Yellow Sea（YS） in summer and autumn. In summer, Paralia sulcata and Prorocentrum dentatum were the predominated species, the cell abundance ranged from 0.074 to 107.733×103 cells/L with an average of 9.057×103 cells/L. Two phytoplankton high abundance appeared in northwest part of the survey area and the Changjiang River Estuary, respectively. In autumn, Par. sulcata became the predominant species, and the phytoplankton cell abundance ranged from 1.035×103 to 8.985×103 cells/L, the average was 3.263×103 cells/L. The phytoplankton abundance in surface layer presented the homogeneous distributions. Canonical Correspondence Analysis（CCA） method was applied for discovering the relationship between environmental factors and the common found phytoplankton species. The responses of phytoplankton to nutrients were varied between summer and autumn. The abundance of most predominant species, Par. sulcata was strongly correlated to temperature and salinity in autumn, but not the case in summer.

关键词： phytoplankton southern Yellow Sea YSCW nutrients CCA correlation

Voyage inside the cell:Microsystems and nanoengineering for intracellular measurement and manipulation

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Microsystems & Nanoengineering 2015年第1期1卷 82-96页

作者： Jun Liu Jun Wen Zhuoran Zhang haijiao Liu Yu Sun Department of Mechanical and Industrial Engineering University of Toronto5 King’s College RoadTorontoON M5S 3G8Canada

Properties of organelles and intracellular structures play important roles in regulating cellular functions,such as gene expression,cell motility and *** ability to directly interrogate intracellular structures inside a single cell for measurement and manipulation has significant implications in the understanding of subcellular and suborganelle activities,diagnosing diseases,and potentially developing new therapeutic *** the past few decades,a number of technologies have been developed to study single-cell ***,methods of measuring intracellular properties and manipulating subcellular structures have been largely *** to the even smaller size of intracellular targets and lower signal-to-noise ratio than that in wholecell studies,the development of tools for intracellular measurement and manipulation is *** paper reviews emerging microsystems and nanoengineered technologies for sensing and quantitative measurement of intracellular properties and for manipulating structures inside a single *** progress and limitations of these new technologies as well as new discoveries and prospects are discussed.

关键词： atomic force microscopy(AFM) fluorescent proteins and molecules intracellular manipulation intracellular measurement MEMS nanoparticle nanotube nanowire