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HIV暴露前预防认知量表的编制及在男男性行为者中的初步验证

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中国艾滋病性病 2024年第5期30卷 487-492页

作者：林浩郭鹏玥常春王晓冬张博曹望楠李菁华北京大学公共卫生学院北京100191 中山大学公共卫生学院广州510080 成都同乐健康咨询服务中心成都610021

目的编制并验证基于健康行动过程取向理论的PrEP认知量表,为进一步探讨PrEP的认知影响因素和推广机制提供工具。方法以量表的六个主要理论要素(自我效能、积极结果预期、消极结果预期、风险感知、使用意愿和行动计划)构建量表条目池,于2... 详细信息

目的编制并验证基于健康行动过程取向理论的PrEP认知量表,为进一步探讨PrEP的认知影响因素和推广机制提供工具。方法以量表的六个主要理论要素(自我效能、积极结果预期、消极结果预期、风险感知、使用意愿和行动计划)构建量表条目池,于2023年10月26日至11月27日在成都和合肥两市的MSM中进行预调查,调查内容包括一般人口学特征、HIV暴露风险、PrEP使用情况以及PrEP认知量表,评估量表的内容效度、表面效度和区分效度,以Cronbach’sα系数评价量表信度,并在一部分调查对象中检测量表的重测信度。结果在参与预调查的32名研究对象中,53.1%(17人)存在HIV暴露风险,34.4%(11人)曾经或正在使用PrEP,在服药方案的选择偏好上,研究对象首选按需服药方案,长效注射方案次之,最后为每日服药方案。由HIV领域专家、同伴领袖和一般适用人群对量表的内容效度和表面效度进行定性评价,修改各条目的措辞和顺序,最终形成9维度44条目PrEP认知量表。总Cronbach’sα为0.882,重测信度组内相关系数为0.895。结论量表的信效度良好,可用于测量PrEP适用人群的PrEP认知水平,为PrEP推广提供评估工具和参考。

关键词：艾滋病病毒暴露前预防健康行动过程取向理论信度效度

Optically transparent graphene-based cognitive metasurface for adaptive frequency manipulation

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Photonics Research 2023年第1期11卷 129-136页

作者： MINGYANG GENG XIAOLU YANG HAO CHEN XINZHI bo MENGZI LI ZHENGUO LIU weibing LU State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China Center for Flexible RF Technology Frontiers Science Center for Mobile Information Communication and SecuritySoutheast UniversityNanjing 210096China Purple Mountain Laboratories Nanjing 211111China

Optically transparent microwave absorbing metasurfaces have shown great potential and are needed in multiple applications environments containing optical windows owing to their ability to reduce backscattering electromagnetic(EM)signals while keeping continuous optical ***,they are also required to have adaptive EM manipulation capability to cope with complex and capricious EM *** a general approach,distributed circuit components,including positive-intrinsic-negative diodes and varactors and sensing components,are integrated with passive absorbing metasurfaces to realize adaptive control of microwave ***,these circuit elements generally require bulky electrical wires and complex control circuits to regulate the operating state,resulting in the absorbing structures being optically ***,it is a great challenge to realize self-operating absorbers while maintaining optical ***,we report an optically transparent cognitive metasurface made of patterned graphene sandwich structures and a radio frequency detector,which can achieve adaptive frequency manipulation to match incident EM *** a proof-of-principle application example,we realize a closed-loop automatic absorber system prototype of the proposed graphene metasurface with self-adaptive frequency variation,without any human *** approach may facilitate other adaptive metadevices in microwave regime with high-level recognition and manipulation and,more generally,promote the development of intelligent stealth technologies.

关键词： transparent microwave absorber

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碎石桩加固软土地基条形基础的承载力

华北地震科学 2024年第3期42卷 42-49页

作者：何超枫李博秦维秉宋剑张赛鹏湖北震泰建设工程质量检测有限责任公司武汉430071 武汉地震工程研究院有限公司武汉430000 高坝大库运行安全湖北省重点实验室湖北宜昌443134 中国长江三峡集团有限公司流域枢纽运行管理中心湖北宜昌443134

为了快速得出碎石桩加固软土地基条形基础的极限承载力,基于Morgenstern-Price切片法建立了碎石桩改良软粘土承载力的分析模型,以此进行参数研究,并进行Gauss和线性拟合。研究结果表明所建立的分析模型取得了较好的结果,当间距/直径比(S... 详细信息

为了快速得出碎石桩加固软土地基条形基础的极限承载力,基于Morgenstern-Price切片法建立了碎石桩改良软粘土承载力的分析模型,以此进行参数研究,并进行Gauss和线性拟合。研究结果表明所建立的分析模型取得了较好的结果,当间距/直径比(S/D)等于1.4时可以取得最好的改良效果,改良率(IR)随着置换率的增加而显著增加,并且参数与改良率(IR)的拟合结果具有较高的精度,为碎石桩加固软土地基条形基础的应用提供科学依据。

关键词：碎石桩承载力切片法分析模型

A New Consistency Test forΛCDM Cosmology Using Galaxy Surveys

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Research in Astronomy and Astrophysics 2022年第6期22卷 183-189页

作者： Jinglan Zheng Gong-bo Zhao Yuting Wang Xiaoyong Mu Ruiyang Zhao weibing Zhang Shuo Yuan David Bacon Kazuya Koyama National Astronomy Observatories Chinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Institute of Cosmology and Gravitation University of PortsmouthDennis Sciama BuildingPortsmouth PO13FXUK

We propose a new consistency test for theΛCDM cosmology using baryonic acoustic oscillations(BAO)and redshift space distortion(RSD)measurements from galaxy redshift ***,we determine the peak position of fσ8(z)in redshift z offered by an RSD measurement,and compare it to the one predicted by the BAO observables assuming a flatΛCDM *** demonstrate this new test using the simulated data for the DESI galaxy survey,and argue that this test complements those using the background observables alone,and is less subject to systematics in the RSD analysis,compared to traditional methods using values of fσ8(z)directly.

关键词： Cosmology-(cosmology:)dark energy-galaxies distances and redshifts

Patterns of human social contact and mask wearing in high-risk groups in China

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Infectious Diseases of Poverty 2022年第3期11卷 98-98页

作者： bo Zheng Wenlong Zhu Jinhua Pan weibing Wang 不详 Shanghai Institute of Infectious Disease and Biosecurity School of Public HealthFudan University138 Yi Xue Yuan RoadShanghai200032China

Background:The pandemic of coronavirus disease 2019(COVID-19)has changed human behavior in areas such as contact patterns and mask-wearing *** human–human contact patterns and mask-wearing habits in high-risk groups is an essential step in fully understanding the transmission of respiratory infection-based *** study had aims to quantify local human–human(H–H)contacts in high-risk groups in representative provinces of China and to explore the occupation-specific assortativity and heterogeneity of social ***:Delivery workers,medical workers,preschoolers,and students from Qinghai,Shanghai,and Zhejiang were recruited to complete an online questionnaire that queried general information,logged contacts,and assessed the willingness to wear a mask in different ***“group contact”was defined as contact with a group at least 20 *** numbers of contacts across different characteristics were assessed and age-specific contact matrices were established.A generalized additive mixed model was used to analyze the associations between the number of individual contacts and several *** factors influencing the frequency of mask wearing were evaluated with a logistic regression ***:A total of 611,287 contacts were reported by 15,635 *** frequency of daily individual contacts averaged 3.14(95%confidence interval:3.13–3.15)people per day,while that of group contacts was 37.90(95%CI:37.20–38.70).Skin-to-skin contact and long-duration contact were more likely to occur at home or among family *** matrices of students were the most assortative(all contacts q-index=0.899,95%CI:0.894–0.904).Participants with larger household sizes reported having more *** household income per capita was significantly associated with a greater number of contacts among preschoolers(P_(50,000–99,999)=0.033)and students(P_(10,000–29,999)=0.017).In each of the public places,the frequency of mask we

关键词： COVID-19 Human-human contact pattern High-risk populatio

优质中籼光温敏核不育系EK8S的选育及应用

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杂交水稻 2024年第3期39卷 66-69页

作者：董华林胡建林王红波殷得所郑兴飞薛莲万厚文吴波费震江金卫兵游艾青彭宣国徐得泽湖北省农业科学院粮食作物研究所/粮食作物种质创新与遗传改良湖北省重点实验室/农业农村部作物分子育种重点实验室/洪山实验室湖北武汉430064 麻城市城区农业技术推广站湖北麻城438300 湖北汇楚智生物科技有限公司湖北武汉430064 湖北省小龙虾产业技术研究院有限公司湖北潜江433100

EK8S是用来源于C815S的两系不育系中间材料作母本、粤丰B变异株系选稳定材料作父本杂交,经湖北武汉和海南陵水两地穿梭育种,利用人工低温池加压筛选育性,田间和室内鉴定米质和农艺性状,培育的具有不育起点温度较低、株型好、米质优、易... 详细信息

EK8S是用来源于C815S的两系不育系中间材料作母本、粤丰B变异株系选稳定材料作父本杂交,经湖北武汉和海南陵水两地穿梭育种,利用人工低温池加压筛选育性,田间和室内鉴定米质和农艺性状,培育的具有不育起点温度较低、株型好、米质优、易繁好制、配合力强的细长粒中籼型水稻光温敏核不育系。利用该不育系配组的杂交稻新组合E两优888、E两优金丝和汇两优莹丝表现产量较高、米质优、食味好、生育期适中,通过了湖北省或国家品种审定。

关键词：杂交水稻光温敏核不育系 EK8S 选育

High-efficiency organic solar cells processed from a halogen-free solvent system

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Science China Chemistry 2023年第8期66卷 2380-2388页

作者： Yueling Su Zicheng Ding Rui Zhang weibing Tang Wenliang Huang Zhichao Wang Kui Zhao Xiaochen Wang Shengzhong(Frank)Liu Yongfang Li Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an710119China Department of Physics Chemistry and Biology(IFM)Linköping UniversityLinköpingSweden Dalian National Laboratory for Clean Energy iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China

The use of non-halogenated solvents for the green manufacture of high-efficiency organic solar cells(OSCs)is important for their future ***,the power conversion efficiency(PCE)of the non-halogenated solvent processed OSCs is generally lower than their halogenated counterpart due to the poor film microstructure caused by the solubility ***,we propose a halogen-free solvent system to optimize film microstructure of the photovoltaic blend based on the polymer donor D18and small-molecule acceptor(SMA)L8-bo towards high-efficiency *** solvent system is consisted of a main solvent carbon disulfide and an additive paraxylene,where the former ensures the good solution-processability and promotes the solution aggregation of L8-bo,and the latter can finely control the phase-separation process by selectively dissolving the *** solvent combination robustly produces a high-quality active layer,i.e.,the bicontinuous networks of donor and acceptor with nano-sized phase-separation and strongπ-π*** the effective charge generation,transport and collection,the resulting device from the non-halogenated solvent system shows a high PCE of 17.50%,which is comparable to that of the device prepared from the halogenated solvent chloroform(ca.17.11%).This article proposes a new strategy for the green fabrication of high-efficiency OSCs to accelerate their industrialization.

关键词： organic solar cells small molecule acceptor film microstructure non-halogenated solvent solvent engineering

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中国科学院水利部水利科学研究院历史探实

自然科学史研究 2023年第4期42卷 435-446页

作者：张伟兵周波中国水利水电科学研究院水利史研究所北京100038 水利部防洪抗旱减灾工程技术研究中心北京100038

1957年在国务院科学规划委员会的指导下,中国科学院、水利部、电力部和交通部达成协议,决定将中国科学院水工研究室和水利部北京水利科学研究院合并,成立由中国科学院和水利部共同领导的水利科学研究机构。国务院的介入和4个部级机构的... 详细信息

1957年在国务院科学规划委员会的指导下,中国科学院、水利部、电力部和交通部达成协议,决定将中国科学院水工研究室和水利部北京水利科学研究院合并,成立由中国科学院和水利部共同领导的水利科学研究机构。国务院的介入和4个部级机构的共同决策,注定此次合并事件非同寻常,在新中国水利科技发展史上有着重要地位和意义。依据档案、人物传记、报刊、史志资料等,本文对此次合并的缘由、过程、结果,以及国务院科学规划委员会在合并中的作用进行了论述。文章指出,此次合并是国家主导下的一次对全国水利科研力量布局的优化和调整,也是中华人民共和国成立初期为建立高效的水利科研体系而进行的一次积极探索。新机构的成立不仅体现了国家倡导的在科学研究领域增产节约的精神,而且使高级水利研究人才布局进一步优化,确立了新机构在全国水利科学研究中的中心地位,为顺利完成十二年科技规划的水利工作奠定了基础。

关键词：中国科学院水工研究室水利部北京水利科学研究院国务院科学规划委员会科研机构合并

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独柱墩梁桥倾覆破坏机理研究

自然灾害学报 2014年第5期23卷 98-106页

作者：彭卫兵程波史贤豪谢波浙江工业大学建筑工程学院浙江杭州310014 宁波市城建设计研究院有限公司浙江宁波315010 宁波城建投资控股有限公司浙江宁波315010

系统研究了独柱墩梁桥在超载及偏载作用下箱梁发生倾覆破坏的机理,具体包括如下内容:(1)定义了箱梁发生倾覆前的两个关键状态,即一侧端支座脱空状态和倾覆稳定极限状态,并据此进一步定义了箱梁发生倾覆的3个阶段,即稳定阶段、过渡阶段... 详细信息

系统研究了独柱墩梁桥在超载及偏载作用下箱梁发生倾覆破坏的机理,具体包括如下内容:(1)定义了箱梁发生倾覆前的两个关键状态,即一侧端支座脱空状态和倾覆稳定极限状态,并据此进一步定义了箱梁发生倾覆的3个阶段,即稳定阶段、过渡阶段和倾覆阶段;(2)以上虞春晖大桥为背景,建立了考虑接触非线性和几何非线性的ABAQUS有限元模型,确定了桥梁倒塌的两个关键状态所对应的荷载,并进一步研究了倾覆荷载与箱梁弹性模量、加载位置、桥长和支座与箱梁摩擦系数间的关系。研究结果表明:(1)有限元计算得到的倾覆极限荷载与春晖桥现场倒塌实测荷载吻合,表明春晖桥的倒塌源于箱梁首先倾覆,在倾覆过程中桥墩被推倒;(2)倾覆稳定极限状态可以作为判断桥梁是否倾覆的依据,比采用一侧端支座脱空状态判断更加准确,对应的倾覆极限荷载是转动极限荷载的1.5~2倍;(3)独柱墩梁桥的转动和倾覆极限荷载与箱梁的弹性模量、加载位置和桥长有关,而与支座与箱梁间的摩擦系数无关。

关键词：独柱墩桥梁倾覆三阶段倒塌极限荷载