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压灌桩桩土接触面微观结构特性模型试验研究

华中科技大学学报（自然科学版） 2021年第5期49卷 67-73页

作者：高睿邓畅蔡桦石知政武汉大学土木建筑工程学院湖北武汉430072 武汉大学岩土与结构工程安全湖北省重点实验室湖北武汉430072 湖北华建建设工程设计审查事务有限公司湖北武汉430000

为探究钻孔压灌桩桩土接触面的微观结构特性,通过室内正交模型试验法,对不同水泥浆液压灌压力、水灰比、土体干密度和含水率下桩土接触面孔隙结构的扫描电镜(SEM)图像进行定性和定量分析,研究了桩土接触面的毛刺现象和孔隙微观结构参数... 详细信息

为探究钻孔压灌桩桩土接触面的微观结构特性,通过室内正交模型试验法,对不同水泥浆液压灌压力、水灰比、土体干密度和含水率下桩土接触面孔隙结构的扫描电镜(SEM)图像进行定性和定量分析,研究了桩土接触面的毛刺现象和孔隙微观结构参数随试验因素变化的规律.研究结果表明:毛刺现象客观存在且由桩土共同作用产生;压灌压力对试验影响最显著,干密度次之,水灰比和含水率影响较小;适当增大压灌压力和提高土体干密度可加强水泥浆液渗透及其三维网状水化产物的填充效果,降低桩土接触面土体孔隙率及孔隙数量,减弱孔隙定向性,并增加微观结构复杂程度,最终加强桩土相互作用效果及整体性,增大桩侧摩阻力.

关键词：钻孔压灌桩微观结构桩土接触面孔隙模型试验

促进抑或抑制:财政分权如何影响绿色生产率?

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当代金融研究 2024年第1期 1-14页

作者：秦愿李金林张圆圆中国社会科学院博士后流动站北京市100028 重庆农村商业银行博士后工作站重庆市400023 中国人民大学财政金融学院博士后流动站北京市100872 华夏银行博士后工作站北京市100005

在财政体制不断深化改革的当前,财政分权的作用备受关注。从财政收入与支出分权的角度,基于2012-2018年我国30个省级层面面板数据,结合SBM-GML模型,分析和检验财政分权对绿色生产率的影响。结果显示,我国绿色生产率整体呈现逐年改善的... 详细信息

在财政体制不断深化改革的当前,财政分权的作用备受关注。从财政收入与支出分权的角度,基于2012-2018年我国30个省级层面面板数据,结合SBM-GML模型,分析和检验财政分权对绿色生产率的影响。结果显示,我国绿色生产率整体呈现逐年改善的现实特征,但财政分权却显著抑制了各省的绿色生产率。上述抑制影响存在地区异质性,在非东部地区更明显。进一步,地方政府竞争构成财政分权影响绿色生产率的关键机制。在财政分权时代下,应持续推进财政分权体制改革,因地制宜地发挥财政分权对可持续发展的应有作用,健全地方政府及官员考核机制,促进绿色生产率的提升。

关键词：财政分权绿色生产率异质性地方政府竞争

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Quantitative research method for tectonization intensity:a case study in Tahe-Lunnan oilfield of Xinjiang

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Global Geology 2013年第2期16卷 82-87页

作者： BIAN Ruikang SONG Xiaowei ZHU hua JING Tieya WANG Long ZHANG qin YANG Yiting Petroleum Exploration and Development Research Institute Sinopec College of Geosciences China University of Petroleum Energy Resource School China University of Geosciences

The research on tectonization intensity plays an important role in the analyses of basin evolution and hydrocarbon accumulation. At present, methods in this field are almost qualitative, and the quantitative one is still rarely reported. In this study, a quantitative research method for tectonization intensity is proposed. The research result on Tahe-Lunnan oilfield shows that this method can not only quantitatively express the tectonization intensity, but also qualitatively reflect the macroscopic deform property and the evolution history of strata. Therefore, it is an effective method for analyzing the characteristics of tectonization. In addition, the realization of the method also can provide qualitative information for studying the influence and control of tectonization on hydrocarbon accumulation.

关键词： tectonization intensity quantitative method Tahe-Lunnan oilfield

彩超对子宫动脉栓塞治疗黏膜下肌瘤疗效的随访观察

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中国介入影像与治疗学 2008年第1期5卷 16-18页

作者：李蕾蔡国华武汉科技大学附属医院超声影像科湖北武汉430064

目的通过彩超对子宫动脉栓塞治疗后黏膜下肌瘤进行随访观察,评价其治疗效果。方法对57例黏膜下肌瘤并接受子宫动脉栓塞的患者以彩超进行1、3、6个月随访,观察子宫大小、肌瘤大小、位置及子宫血流、肌瘤内血流速度及阻力指数。结果本组5... 详细信息

目的通过彩超对子宫动脉栓塞治疗后黏膜下肌瘤进行随访观察,评价其治疗效果。方法对57例黏膜下肌瘤并接受子宫动脉栓塞的患者以彩超进行1、3、6个月随访,观察子宫大小、肌瘤大小、位置及子宫血流、肌瘤内血流速度及阻力指数。结果本组57例黏膜下肌瘤患者,子宫动脉栓塞术后子宫体积平均为(140.2±56.9)cm3,较术前[(231.6±11.7)cm3]明显缩小(P<0.01);术后子宫肌瘤内血流明显减少甚至消失,子宫内血流术后1～3个月明显减少,3个月后基本恢复;术后1～3个月瘤体全部或部分娩出。结论子宫动脉栓塞治疗子宫黏膜下肌瘤疗效可靠,彩超是评价其治疗效果的有效手段。

关键词：超声检查黏膜下子宫肌瘤栓塞治疗性随访观察

The frst avian infuenza A (H7N9) viral infection in humans in Zhejiang Province, China: a death report

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Frontiers of Medicine 2013年第3期7卷 333-344页

作者： Enfu Chen Fenjuan Wang huakun Lv Yanjun Zhang hua Ding Shelan Liu Jian cai Li Xie Xiaoping Xu Chengliang Chai Haiyan Mao Jimin Sun Junfen Lin Zhao Yu Lianhong Li Zhiping Chen Shichang Xia Department of Infectious Diseases Zhejiang Center for Disease Control and Prevention Department of Infectious Diseases Xiaoshan District Center for Disease Control and Prevention Department of Infectious Diseases Hangzhou Center for Disease Control and Prevention Department of Infectious Diseases Jiande Center for Disease Control and Prevention

This study reports the frst death caused by a novel avian infuenza A(H7N9)virus in Zhejiang Province,*** patient had chronic hepatitis B and history of exposure to *** patient initially complained of diarrhea and infuenza-like symptoms on March 7 and 14 *** disease progressed to severe pneumonia,sustained hypoxia,and coagulation *** patient died on March 27 because of respiratory failure,multiple organ failure,and disseminated intravascular coagulation without oseltamivir *** H7N9 virus from Zhejiang is highly similar to isolates obtained from Shanghai,Jiangsu,Anhui,*** of hemagglutinin,neuramidinase,and matrix genes indicated that the isolates share the same avian origin,have low virulence,and are sensitive to oseltamivir,but are resistant to *** the isolate that caused the fatality exhibited substitution of Q226I in the HA gene,which indicates a potentially enhanced human *** secondary transmission rate was 1.6%(2/125).Only two health workers presented with infuenza-like symptoms,and they subsequently tested negative for H7N9 *** conclusion,underlying disease,late diagnosis,and untimely antiviral treatment are possible high-risk factors for infections and death caused by the lowpathogenicity avian infuenza A(H7N9).Person-to-person transmission of the H7N9 virus was not detected among close contacts,but such transmission should be investigated in the *** and enhancing surveillance will help in the early discovery and diagnosis of suspected cases,which will reduce the number of severe cases and deaths.

关键词： avian influenza A (H7N9) virus epidemiology contacts person-to-person transmission

Isolation and structural characterization of related impurities in andrographolide sodium bisulphite

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Isolation and structural characterization of related impurit...

中国化学会第十届全国天然有机化学学术会议

作者： Ji-qin Hou Bao-Lin Wang Hao Wang Wen-cai Ye State Key Laboratory of Natural Medicines China Pharmaceutical University Department of Natural Medicinal Chemistry China Pharmaceutical University Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research Jinan University

＜正＞Andrographolide sodium bisulphite（ASB）,widely used in China for the treatment of bacterial infections,is a water-soluble sulfonated derivative of andrographolide,an important diterpenoid lactone isolated from Andrographis *** chemical investigation of ASB bulk drug resulted in the isolation of four new related impurities,3,12,13,15,19-pentahydroxy-8,14-

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旋转三角形绳系卫星编队系统动态稳定性分析

计算力学学报 2013年第S1期30卷 62-67页

作者：蔡志勤周红李学府大连理工大学工业装备结构分析国家重点实验室工程力学系大连116024

本文研究了平动点附近的旋转三角形绳系卫星编队系统的动态稳定性问题。为了便于分析,假设系绳始终保持张紧状态,且不计系绳的质量。为了建立更加符合实际的数学模型,考虑了姿态运动和轨道运动的相互影响,即姿轨耦合,并在此基础上推导... 详细信息

本文研究了平动点附近的旋转三角形绳系卫星编队系统的动态稳定性问题。为了便于分析,假设系绳始终保持张紧状态,且不计系绳的质量。为了建立更加符合实际的数学模型,考虑了姿态运动和轨道运动的相互影响,即姿轨耦合,并在此基础上推导出了考虑姿轨耦合的非线性动力学方程。最后用数值方法模拟了在不同的旋转速度情况下系统的动态稳定性,模拟结果表明旋转速率越大系统稳定性越好.

关键词：旋转三角形绳系卫星编队稳定性分析姿轨耦合平动点 Hill限制性三体问题

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基于FPGA的CPCI总线光纤传输系统

光通信技术 2008年第4期32卷 32-34页

作者：秦志辉龚华达覃勇中国电子科技集团公司第三十四研究所广西桂林541004

提出一种基于FPGA(Field Programmable Gate Array,现场可编程逻辑器件)的CPCI总线光纤传输系统,并介绍了用Xilinx公司的FPGA内嵌的高速串行接口RocketIO取代传统使用串行解串器的方法完成光纤传输系统设计,实际设计实现了这种想法。着... 详细信息

提出一种基于FPGA(Field Programmable Gate Array,现场可编程逻辑器件)的CPCI总线光纤传输系统,并介绍了用Xilinx公司的FPGA内嵌的高速串行接口RocketIO取代传统使用串行解串器的方法完成光纤传输系统设计,实际设计实现了这种想法。着重介绍了CPCI总线的优越性和系统的硬件结构设计及FPGA实现方法等关键技术。

关键词：光纤传输系统 CPCI总线 FPGA Rocket I0

Susceptibility of male fire ants (Solenopsis invicta) to Metarhizium anisopliae

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林业与环境科学 2019年第5期35卷 100-105页

作者： Qiu hualong Xu Jinzhu Zhao Danyang Tian Longyan Yang hua Lian Tao qin Changsheng Guangdong Provincial Key Laboratory of Silviculture Protection and Utilization/Guangdong Academy of Forestry

Increasing evidences indicate that male haploid are more susceptible to parasites than female diploid(workers,alate females and queens)although the generality and reasons causing such susceptibility are still under *** male haploids in eusocial Hymenoptera are perfect for examining the susceptibility assumption and unveiling the molecular mechanisms of this *** the present study,the males,workers and alate females of red imported fire ants(Solenopsis invicta)were challenged with entomopathogenic fungus Metarrhizium *** measuring the LC50 values of *** against different castes of ***,we found that haploid males suffered from reduced disease resistance than diploid workers and alate females,a proof that haploid susceptibility was diminished in *** this study we also examined the assumption that males invest less in innate immunity contributing to haploid susceptibility based on the transcript levels of genes encoding antimicrobial peptides(AMP)with quantitative reverse transcription-PCR(qRT-PCR).We found that infection increased the mRNA levels of hymenoptaecin in females(workers and alate females),but not in males;no significant difference was found in the mRNA levels of defensin,transferrin or crustin between infected ants and control ants in each sxe/***,this study suggested that any resistance traits like behavioral and other immunological responses,are contributing to haploid susceptibility.

关键词： Social insects Antimicrobial peptide Castes Immunity