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装配式后张预应力混凝土简支板梁桥设计验算方法研究

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建筑技术开发 2024年第9期51卷 129-131页

作者：薛栩超蓝天孔代玉中冶华天工程技术有限公司南京210019 华设设计集团股份有限公司南京210014 南京中燃智慧能源有限公司南京211806

小跨度桥梁设计普遍存在于市政工程项目中,以某市政典型跨河段项目为研究对象,选取16 m装配式后张预应力混凝土简支板梁桥进行跨河桥梁设计、分析和验算,最终得到以下结论:首先,针对装配式后张预应力混凝土简支板梁桥的设计验算,给出了... 详细信息

小跨度桥梁设计普遍存在于市政工程项目中,以某市政典型跨河段项目为研究对象,选取16 m装配式后张预应力混凝土简支板梁桥进行跨河桥梁设计、分析和验算,最终得到以下结论:首先,针对装配式后张预应力混凝土简支板梁桥的设计验算,给出了二维梁单元设计验算的方法;其次,通过与规范要求进行比对,验证了本项目中桥梁设计的合理性;最后,研究成果可为类似跨度不大于16 m的桥梁在选择装配式预应力混凝土简支板形式时提供相关依据。

关键词：桥梁简支梁有限元

NνDEx-100 conceptual design report

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Nuclear Science and Techniques 2024年第1期35卷 18-33页

作者： Xi-Guang Cao Yan-Long Chang Kai Chen Emilio Ciuffoli Li-Min Duan Dong-Liang Fang chao-Song Gao Surja K.Ghorui Peng-Chong Hu Qiang Hu Si-Yuan Huang Ze-Yu Huang Lei lang Yu-lan Li Zhi-Jie Li tian-Yu Liang Jun Liu Chen-Gui Lu Fa-Tai Mai Yuan Mei Hao Qiu Xiang-Ming Sun Xiao-Xing Tang Hu-Lin Wang Qian-Ming Wang Le Xiao Mu-Yun Xiao Jian-Yu Xin Nu xu Peng Yang Yi-Chen Yang Zhen Yang Zong-Yang Yu Dong-Liang Zhang Jun-Wei Zhang Cheng-Xin Zhao Dou Zhu NνDEx-100 collaboration Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China lanzhou University Lanzhou 730000China Central China Normal University Wuhan 430079China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Lawrence Berkeley National Laboratory BerkeleyCA 94720USA North China University of Water Resources and Electric Power Zhengzhou 450045China 不详

Observing nuclear neutrinoless double beta (0vββ) decay would be a revolutionary result in particle *** such a decay would prove that the neutrinos are their own antiparticles,help to study the absolute mass of neutrinos,explore the origin of their mass,and may explain the matter-antimatter asymmetry in our universe by lepton number *** propose developing a time projection chamber (TPC) using high-pressure ^(82)SeF_(6) gas and Topmetal silicon sensors for readout in the China Jinping Underground Laboratory (CJPL) to search for neutrinoless double beta decay of82Se,called the NvDEx *** being located at CJPL with the world’s thickest rock shielding,NvDEx combines the advantages of the high Qββ(2.996 MeV) of82Se and the TPC’s ability to distinguish signal and background events using their different topological *** makes NvDEx unique,with great potential for low-background and high-sensitivity 0 vββ***-100,a NvDEx experiment phase with 100 kg of SeF_(6)gas,is being built,with plans to complete installation at CJPL by *** report introduces 0 vββ physics,the NvDEx concept and its advantages,and the schematic design of NvDEx-100,its subsystems,and background and sensitivity estimation.

关键词： Neutrinoless double beta decay Time projection chamber ^(82)SeF_(6) China Jinping Underground Laboratory

射频等离子体改性制备S_(2)O_(2)-8/SnO_(2)-Al_(2)O_(3)固体超强酸催化剂的研究

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现代化工 2024年第7期44卷 139-144页

作者：张旭东李秀兰朱长辉田保河朱文超四川轻化工大学机械工程学院四川宜宾644005 国民核生化灾害防护国家重点实验室北京102205

采用低温陈化法制备S_(2)O_(2)-8/SnO_(2)-Al_(2)O_(3)固体超强酸催化剂,利用射频等离子体技术对其进行改性后催化L-酪氨酸与甲醇的酯化反应。利用Hammett指示剂法、XRD、HRTEM、BET、FT-IR、Py-IR和NH_(3)-TPD等对改性前后的催化剂进... 详细信息

采用低温陈化法制备S_(2)O_(2)-8/SnO_(2)-Al_(2)O_(3)固体超强酸催化剂,利用射频等离子体技术对其进行改性后催化L-酪氨酸与甲醇的酯化反应。利用Hammett指示剂法、XRD、HRTEM、BET、FT-IR、Py-IR和NH_(3)-TPD等对改性前后的催化剂进行表征。结果表明,经射频等离子体改性后的催化剂颗粒分散性更好、粒径更小(4.32 nm)、比表面积更大(104.4 m^(2)/g)、总酸量更高(142.9μmol/g)。在温度为180℃、压力为1 MPa的条件下,射频等离子体改性后的催化剂催化L-酪氨酸甲酯化反应6 h后L-酪氨酸甲酯产率可达92%。

关键词：固体超强酸 S_(2)O_(2)-8/SnO_(2)-Al_(2)O_(3) 射频等离子体酯化反应

Heterogeneous Fenton-like discoloration of methyl orange using Fe3O4/MWCNTs as catalyst： kinetics and Fenton-like mechanism

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Frontiers of Materials Science 2018年第1期12卷 34-44页

作者： Huan-Yan xu Yuan WANG tian-Nuo SHI Hang ZHAO Qu TAN Bo-chao ZHAO xiu-lan HE Shu-Yan QI School of Materials Science and Engineering Harbin University of Science and Technology Harbin 150040 China

The kinetics and Fenton-like mechanism are two challenging tasks for heterogeneous Fenton-like catalytic oxidation of organic pollutants. In this study, three kinetic models were used for the kinetic studies of Fe3O4/MWCNTs-H2O2 Fenton-like reaction for MO degradation. The results indicated that this reaction followed the first- order kinetic model. The relationship of reaction rate constant and temperature followed the Arrhenius equation. The activation energy and frequency factor of this system were calculated as 8.2 ***1-1 and 2.72 s-1, respectively. The quantifications of Fe ions dissolution and ,OH radicals generation confirmed that the homogeneous and hetero- geneous catalyses were involved in Fe3O4/MWCNTs＇H2O2 Fenton-like reaction. The reaction rate constant was closely related with Fe ions dissolution and ,OH radicals generation. Fe3O4/MWCNTs nanocomposites had typical ferromagnetic property and could be easily separated from solution by an external magnet after being used. Furthermore, Fe3O4/MWCNTs nanocomposites exhibited good stability and recyclability. Finally, the Fenton-like mechanisms on homogeneous and heterogeneous catalyses were described.

关键词： MWCNTs Fe3O4 NPs kinetics ,OH radicals Fenton'like mechanism

Mass spectrometry based proteomics profiling of human monocytes

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Protein & Cell 2017年第2期8卷 123-133页

作者： yong Zeng Fei-Yan Deng Wei Zhu lan Zhang Hao He chao xu Qing tian Ji-Gang Zhang Li-Shu Zhang Hong-Gang Hu Hong-Wen Deng College of Life Sciences and Bioengineering Beijing Jiaotong University Beijing 100044 China Center of Bioinformatics and Genomics Tulane University School of Public Health and Tropical Medicine New Orleans LA 70112 USA College of Life Sciences Hunan Normal University Changsha 410081 China Laboratory of Proteins and Proteomics Department of Epidemiology Soochow University School of Public Health Suzhou 205123 China

Human monocyte is an important cell type which is involved in various complex human diseases. To better understand the biology of human monocytes and facilitate further studies, we developed the first comprehensive proteome knowledge base specifically for human monocytes by integrating both in vivo and in vitro datasets. The top 2000 expressed genes from in vitro datasets and 779 genes from in vivo experiments were integrated into this study. Altogether, a total of 2237 unique monocyte-expressed genes were cataloged. Biological functions of these monocyte-expressed genes were annotated and classified via Gene Ontology （GO） analysis. Furthermore, by extracting the overlapped genes from in vivo and in vitro datasets, a core gene list including 541 unique genes was generated. Based on the core gene list, further gene-disease associations, pathway and network analyses were performed. Data analyses based on multiple bioinformatics tools produced a large body of biologically meaningful information, and revealed a number of genes such as SAMHDI, G6PD, GPD2 and EN01, which have been reported to be related to immune response, blood biology, bone remodeling, and cancer respectively. As a unique resource, this study can serve as a reference map for future in-depth research on monocytes biology and monocyte-involved human diseases.

关键词： human monocytes proteomics knowledgebase gene ontology gene-disease association network analysis

Stability analysis method of geogrid reinforced expansive soil slopes and its engineering application

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Journal of Central South University 2020年第7期27卷 1965-1980页

作者： ZHANG Rui LONG Ming-xu lan tian ZHENG Jian-long GEOFF chao National Engineering Laboratory of Highway Maintenance Technology Changsha University of Science&TechnologyChangsha 410114China School of Traffic&Transportation Engineering Changsha University of Science&TechnologyChangsha 410114China Department of Geotechnical and Earth Resources Engineering Asian Institute of TechnologyKlong LuangPathumthani 12120Thailand

The traditional stability analysis method of geogrid reinforced slopes does not consider the effect of lateral swelling,so it is not applicable to reinforced expansive soil *** paper reports a new stability analysis method for geogrid reinforced expansive soil *** additional pullout force of the free zone due to the lateral swelling and the anti-pullout safety factor of each geogrid layer were obtained by ensuring the overall stability of the reinforced *** optimum design was carried out to treat an expansive soil cut slope in Hubei Province,China,by changing the spacing and length of geogrid *** results show that the additional pullout force caused by lateral swelling has a great influence on the anti-pullout stability of geogrids,and the local stability of the reinforced slope will be overestimated if the swelling effect of soil in the free zone is not considered.

关键词： expansive soil lateral swelling pressure geogrid-soil interaction stability analysis engineering application

Searching for^(76)Ge neutrinoless double beta decay with the CDEX-1B experiment

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Chinese Physics C 2024年第10期48卷 11-22页

作者： Bing-Tao Zhang Jun-Zheng Wang Li-Tao Yang Qian Yue Ke-Jun Kang Yuan-Jing Li Hai-Peng An C.Greeshma Jian-Ping Chang Yun-Huan Chen Jian-Ping Cheng Wen-Han Dai Zhi Deng Chang-Hao Fang Xin-Ping Geng Hui Gong Qiu-Ju Guo xu-Yuan Guo Li He Sheng-Ming He Jin-Wei Hu Han-Xiong Huang Tu-Chen Huang Hai-Tao Jia Xi Jiang S.Karmakar Hao-Bin Li Jian-Min Li Jin Li Qian-Yun Li Ren-Ming-Jie Li xue-Qian Li Yu-lan Li Yi-Fan Liang Bin Liao Fong-Kay Lin Shin-Ted Lin Jia-xuan Liu Shu-Kui Liu Yan-Dong Liu Yu Liu Yuan-Yuan Liu Zhong-Zhi Liu Hao Ma Yu-Cai Mao Qi-Yuan Nie Jin-Hua Ning Hui Pan Ning-Chun Qi Jie Ren Xi-chao Ruan Ze She Manoj Kumar Singh tian-Xi Sun Chang-Jian Tang Wei-You Tang Yang tian Guang-Fu Wang Li Wang Qing Wang Yu-Feng Wang Yun-Xiang Wang Henry-Tsz-King Wong Shi-yong Wu Yu-Cheng Wu Hao-Yang Xing Rui xu Yin xu Tao xue Yu-Lu Yan Nan Yi Chun-xu Yu Hai-Jun Yu Jian-Feng Yue Ming Zeng Zhi Zeng Feng-Shou Zhang Lei Zhang Zhen-Hua Zhang Zhen-Yu Zhang Kang-Kang Zhao Ming-Gang Zhao Ji-Fang Zhou Zu-Ying Zhou Jing-Jun Zhou Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084 Department of Physics Tsinghua UniversityBeijing 100084 Institute of Physics Academia SinicaTaipei 11529 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875 College of Physics Sichuan UniversityChengdu 610065 School of Physics Peking UniversityBeijing 100871 Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413 Sino-French Institute of Nuclear and Technology Sun Yat-sen UniversityZhuhai 519082 School of Physics Nankai UniversityTianjin 300071 Department of Physics Banaras Hindu UniversityVaranasi 221005 Department of Physics Beijing Normal UniversityBeijing 100875

We operated a p-type point contact high purity germanium(PPCGe)detector(CDEX-1B,1.008 kg)in the China Jinping Underground Laboratory(CJPL)for 500.3 days to search for neutrinoless double beta(0νββ)decay of^(76)Ge.A total of 504.3 kg⋅day effective exposure data was *** anti-coincidence and the multi/single-site event(MSE/SSE)discrimination methods were used to suppress the background in the energy region of interest(ROI,1989–2089 keV for this work)with a factor of 23.A background level of 0.33 counts/(keV⋅kg⋅yr)was *** lower limit on the half life of^(76)Ge 0νββdecay was constrained as T_(1/2)^(0ν)>1.0×10^(23)yr(90%C.L.),corresponding to the upper limits on the effective Majorana neutrino mass:<3.2–7.5 eV.

关键词： neutrinoless double beta decay CDEX point-contact germanium detector ^(76)Ge

Bioprocess-inspired Actin Biomineralized Hematite Mesocrystals for Energy Storage

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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1299-1303页

作者： xu Wei ZHAO chao XIE Jingjing WANG Rongjie tianjin Institute of Power Sources Tianjin 300384China CETC lan tian Technology Co. Ltd.Tianjin 300384China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Biomineralization is a biological process of synthesizing inorganic minerals within *** has been found that intracellular proteins are involved in the room temperature synthesis process of anatase Ti O2in living ***,we used intracellular actin to synthesize hematite by *** hematite has a nano spindle structure with a particle size of approximately 150 *** microstructure indicates that the prepared hematite is a mesocrystals composed of ordered arrangement and assembly of primary *** addition,hematite mesocrystals exhibit good lithium storage performance as electrode materials for lithium *** discharge specific capacity of the battery remained at 560.7 m Ah·g^(-1)after 130 cycles at a current density of 200 m A·g^(-1).This work expands the synthesis methods of hematite by biomineralization,and provides a new strategy for preparing inorganic materials by intracellular proteins.

关键词： actin hematite biomineralization mesocrystals lithium battery

Relationship of serum polyunsaturated fatty acids with cytokines in colorectal cancer

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World Journal of Gastroenterology 2016年第8期22卷 2524-2532页

作者： He-Jin Jia Peng-Jun Zhang Yu-lan Liu chao-Guang Jiang xu Zhu Ya-Ping tian Core Laboratory of Translational Medicine State Key Laboratory of Kidney Disease Chinese PLA General Hospital Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing) Interventional Therapy Department Peking University Cancer Hospital & Institute The Medical Department of Educational Administration Chinese PLA General Hospital

AIM: To investigate the relationship of serum levels of polyunsaturated fatty acid(PUFA) with kinds of cytokines in colorectal cancer(CRC).METHODS: Serum samples of 100 CRC patients were collected. The concentration of total n-3 PUFA which included C18:3 n-3, C20:5 n-3, C22:5 n-3, C22:6 n-3 and the total n-6 PUFA included C18:2 n-6, C18:3 n-6, C20:3 n-6, C20:4 n-6, and C22:5 n-6 were detected onGC-2010 Plus Gas Chromatograph with a Omegawax TM 250 column. Cytokines were detected by Mag Plex TM-C microspheres. P values for the trend were estimated by creating a continuous variable using the median value within ***: Interleukin-6(IL-6) showed significantly positive association with the C20:4 n-6(P for trend = 0.004). Interferon gamma(IFN-γ) showed significant positive association with the C22:5 n-3(P for trend = 0.035). IL-8 and matrix metalloproteinase-9(MMP-9) showed significant inverse association with the C22:6 n-3(P for trend = 0.049, and 0.021). MMP-2 showed significant inverse association with the C20:5 n-3(P for trend = 0.008). MMP-7 showed significantly positive association with the ratio of n-6 PUFA and n-3 PUFA(P for trend = 0.008). MMP-7 also showed significantly inverse association with the ratio of C20:4 n-6 and(n-6 PUFA + n-3 PUFA)(P for trend = 0.024). IL-10(P for trend = 0.023) and IL-6(P for trend = 0.036) showed significantly positive association with the ratio of C20:4 n-6 and C20:5 ***: Our data suggested that serum levels of PUFA is related to the inflammation of CRC, and also play different role in regulation of immune response.

关键词： Polyunsaturated fatty acids Cytokine Colorectal cancer Odds ratio Nutrition