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价值工程 2024年第24期43卷 51-54页

作者：郑长钦厦门长衡测绘有限公司厦门361000

多测合一在联合验收中为各项验收提供基础数据保障。文章通过对多测合一的内容及建设工程竣工规划验收标准的介绍,以及建设工程施工过程影响联合验收因素的分析,强调多测合一测绘工作全程配合的重要性,以促进建设项目顺利验收投产、提... 详细信息

多测合一在联合验收中为各项验收提供基础数据保障。文章通过对多测合一的内容及建设工程竣工规划验收标准的介绍,以及建设工程施工过程影响联合验收因素的分析,强调多测合一测绘工作全程配合的重要性,以促进建设项目顺利验收投产、提升营商环境。

关键词：多测合一规划设计条件验收标准综合服务

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The Generalized f(R) Model with Coupling in 5D Spacetime

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Chinese Physics Letters 2013年第6期30卷 241-245页

作者： WU Ya-Bo ZHAO Yue-Yue LU Jian-Bo LI Jian ZHANG Wen-Xin chang hong Department of Physics Liaoning Normal UniversityDalian 116029

The generalized f(R)gravity with coupling in five-dimensional(5D)spacetime is studied on the basis of both the 4D generalized f(R)gravity with coupling and the pure f(R)gravity without coupling in 5D ***,by assuming a hypersurface-orthogonal space-like Killing vector field in 5D spacetime,the generalization of the 4D generalized f(R)gravity to 5D can be realized,which can give the reduced 4-metric coupled with two scalar *** particular,we discuss a special class of models,i.e.,f_(1)(R)=f_(2)(R)=αRm(m≠1),and choose B(L_(m))=Lm=-ρin the homogeneous and isotropic cosmology with the 4D Friedmann–Robertson–Walker *** numerical analysis shows that the parameter m can be constrained by means of the current observations for the deceleration parameter,which implies that this generalized f(R)model with coupling in 5D spacetime can account for the present accelerated expansion of the universe.

关键词： (R) coupling parameter

A covering liquid method to intensify self-preservation effect for safety of methane hydrate storage and transportation

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Petroleum Science 2022年第3期19卷 1411-1419页

作者： Jun Chen Yao-Song Zeng Xing-Yu Yu Qing Yuan Tao Wang Bin Deng Ke-Le Yan Jian-hong Jiang Li-Ming Tao chang-Zhong Chen Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications College of Chemistry and Environmental ScienceXiangnan UniversityChenzhouHunan Province423000China School of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng252059China SINOPEC Research Institute of Safety Engineering 339 Songling RoadQingdao266000China

In this work,experiments and comprehensive insights into the proposed covering liquid method to intensify self-preservation effect for methane(CH_(4))storage are *** CH_(4)hydrate decomposition percentage was 17.6%with the pressure of 0.61 MPa after 12 h at 266.0 K without a covering liquid,which can be reduced to 12.4%,13.8%,13.0%,and 8.3%with the pressure of 0.26 MPa,0.33 MPa,0.51 MPa,and 0.37 MPa by covering with tetrahydrofuran(THF),cyclopentane(CP),cyclohexane,and n-tetradecane,*** the temperature for CH_(4)hydrate decompositionwas 274.2 K,covering with THF,CP,cyclohexane,and n-tetradecane failed to inhibit CH_(4)hydrate *** results suggested that the covering liquid may form a new solid layer(a hydrate layer or other solidified layer)around the CH_(4)hydrate,which inhibit CH_(4)transfer below the freezing point of ***,the new solid layer cannot resist the fast transfer of CH_(4)from decomposed CH_(4)hydrate above the freezing point of *** same phenomenon was also observed in a sodium dodecyl sulfonate(SDS)-dry solution CH_(4)hydrate formation ***,the covering method can only intensify the self-preservation effect below the freezing point of water,but cannot generate a self-preservation effect.

关键词： Decomposition Inhibition Methane hydrate Method Self-preservation effect

Feeding methods, sleep arrangement, and infant sleep patterns: a Chinese population-based study

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世界儿科杂志:英文版 2016年第1期12卷 66-75页

作者： Xiao-Na Huang Hui-Shan Wang Jen-Jen chang Lin-hong Wang Xi-Cheng Liu Jing-Xiong Jiang Lin An Department of Children Health National Center for Maternal and Children HealthChinese Center for Disease Control and PreventionBeijingChina Department of Epidemiology Saint Louis University College for Public Health and Social JusticeSt.Louis.MOUSA The National Center for Chronic and Non-communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina Bronchoscopy Center Affi liated Children Hospital of Beijing Capital Medical UniversityBeijingChina Department of Public Health Peking University Health Science CenterBeijingChina

Background:Findings from prior research into the effect of feeding methods on infant sleep are *** objectives of this study were to examine infants'sleep patterns by feeding methods and sleep arrangement from birth to eight months ***:This longitudinal cohort study enrolled 524 pregnant women at 34-41 weeks of gestation and their infants after delivery in 2006 and followed up until eight months *** study subjects were recruited from nine women and children hospitals in nine cities in China(Beijing,Chongqing,Wuhan,changsha,Nanning,Xiamen,Xi'an,Jinan,and Hailin).Participating infants were followed up weekly during the first month and monthly from the second to the eighth month after ***-four hour sleep diaries recording infants'sleeping and feeding methods were administered based on caregiver's *** mixed growth curve models were fi tted to estimate the effects of feeding methods and sleep arrangement on infants'sleep patterns over time,controlling for maternal and paternal age,maternal and paternal education level,household income,supplementation of complementary food,and infant birth weight and ***:Exclusively formula fed infants had the greatest sleep percentage/24 h,followed by exclusively breast milk fed infants and partially breast milk fed infants(P<0.01).Night waking followed a similar ***,the differences in sleep percentage and night waking frequency between exclusively formula and exclusively breast milk fed infants weakened over time as infants *** addition,compared to infants with bed-sharing sleep arrangement,those with room sharing sleep arrangement had greater daytime and 24-hour infant sleep percentage,whereas those with sleeping alone sleep arrangement had greater nighttime sleep ***:Our data based on caregiver's selfreport suggested that partial breastfeeding and bedsharing may be associated with less sleep in *** care professio

关键词： breast feeding feeding method infant sleep sleep arrangement

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高速公路施工中填石路基施工技术探究

应用人工智能技术提高环保设备故障识别率的研究与应用

建筑与装饰 2024年第10期 193-195页

作者：韦昌兵安徽交控工程集团有限公司安徽合肥 230000

填石路基施工技术是高速公路路基施工中的难点之一,为进一步提升高速公路填石路基施工技术的应用效果,文章以案例分析法,结合宣城至泾县高速公路一期工程XJ-02施工案例,对高速公路施工中填石路基施工技术的应用做出了探究,并总结出了填... 详细信息

填石路基施工技术是高速公路路基施工中的难点之一,为进一步提升高速公路填石路基施工技术的应用效果,文章以案例分析法,结合宣城至泾县高速公路一期工程XJ-02施工案例,对高速公路施工中填石路基施工技术的应用做出了探究,并总结出了填石路基施工技术的根本特征及技术应用要点,即在施工过程中,可以通过做好前期准备、加强工序控制、强化质量检验这三点提高工程建设质量.

关键词：高速公路施工填石路基施工技术

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全面腐蚀控制 2024年第9期38卷 52-54页

作者：吴长生福建龙净环保股份有限公司福建龙岩364000

本论文以燃煤电厂烟气治理环保岛设备为研究对象,基于人工智能大数据技术探索研发设备故障识别技术,解决环保岛设备故障识别准确率低、故障发现不及时等问题。经实验测试和应用结果表明,本文所提出的环保设备异常诊断模型识别准确率、... 详细信息

本论文以燃煤电厂烟气治理环保岛设备为研究对象,基于人工智能大数据技术探索研发设备故障识别技术,解决环保岛设备故障识别准确率低、故障发现不及时等问题。经实验测试和应用结果表明,本文所提出的环保设备异常诊断模型识别准确率、召回率、虚警率和漏警率能达到较高水平,能实现对燃煤电厂环保设备的异常状态监测与高效精准维护。

关键词：智慧环保人工智能工业设备故障数据挖掘

Research progress of CO_(2)oxidative dehydrogenation of propane to propylene over Cr-free metal catalysts

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Rare Metals 2022年第7期41卷 2129-2152页

作者： Zhong-Yu Wang Zhen-hong He Long-Yao Li Shao-Yan Yang Meng-Xin He Yong-chang Sun Kuan Wang Jian-Gang Chen Zhao-Tie Liu Shaanxi Key Laboratory of Chemical Additives for Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi’an 710021China School of Chemistry and Chemical Engineering Shaanxi Normal UniversityXi’an 710119China

CO_(2)-assisted oxidative dehydrogenation of propane(CO_(2)-ODHP)is an attractive strategy to offset the demand gap of propylene due to its potentiality of reducing CO_(2)emissions,especially under the demands of peaking CO_(2)emissions and carbon *** introduction of CO_(2)as a soft oxidant into the reaction not only averts the over-oxidation of products,but also maintains the high oxidation state of the redox-active ***,the presence of CO_(2)increases the conversion of propane by coupling the dehydrogenation of propane(DHP)with the reverse water gas reaction(RWGS)and inhibits the coking formation to prolong the lifetime of catalysts via the reverse Boudouard *** effective catalyst should selectively activate the C–H bond but suppress the C–C ***,to prepare such a catalyst remains ***-based catalysts are always applied in industrial application of DHP;however,their toxic properties are harmful to the *** this aspect,exploring environment-friendly and sustainable catalytic systems with Cr-free is an important *** this review,we outline the development of the CO_(2)-ODHP especially in the last ten years,including the structural information,catalytic performances,and mechanisms of chromium-free metal-based catalyst systems,and the role of CO_(2)in the *** also present perspectives for future progress in the CO_(2)-ODHP.

关键词： Propane Dehydrogenation Propylene CO_(2) Chromium-free metals Catalytic performance

某悬链线钢筋混凝土箱形拱桥的结构检测、评估与加固设计研究

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工程建设与设计 2024年第13期 101-103页

作者：纪常永中铁三局集团第二工程有限公司石家庄050031

针对某悬链线钢筋混凝土箱形拱桥随着时间的增加,病害不断恶化的问题,论文对该桥进行了深入的桥梁外观结构检测及箱形拱桥病害状况评估。根据检测的结构受力特点和评估的结果,利用增大截面法对桥梁进行了加固设计,同时利用有限元软件进... 详细信息

针对某悬链线钢筋混凝土箱形拱桥随着时间的增加,病害不断恶化的问题,论文对该桥进行了深入的桥梁外观结构检测及箱形拱桥病害状况评估。根据检测的结构受力特点和评估的结果,利用增大截面法对桥梁进行了加固设计,同时利用有限元软件进行了仿真分析。仿真结果表明,加固后的拱桥残余应变均小于20%,满足桥梁的承载力要求。

关键词：钢筋混凝土箱形拱桥加固设计增大截面法桥梁检测病害状况评估

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OBE理念下高职英语混合式教学策略研究

湖北开放职业学院学报 2024年第16期37卷 176-177,180页

作者：廉东昌江苏电子信息职业学院江苏淮安223003

近年来,我国高职英语混合式教学快速发展,但因教育技术、教学理念、学习习惯等因素的影响,高职英语混合式教学也出现了诸多问题。OBE教育理念以成果为导向、以学生为中心,与混合式教学的基本要求高度契合。在该理念的指导下,高职英语混... 详细信息

近年来,我国高职英语混合式教学快速发展,但因教育技术、教学理念、学习习惯等因素的影响,高职英语混合式教学也出现了诸多问题。OBE教育理念以成果为导向、以学生为中心,与混合式教学的基本要求高度契合。在该理念的指导下,高职英语混合式教学可基于“成果导向理念”进行课程设计,基于“学生中心理念”开展教学活动,基于“持续改进理念”做好教学反思提升,是提升高职英语混合式教学效果的有效策略。

关键词： OBE理念高职英语混合式教学策略

1-9年级学生的“物质”核心概念学习进阶研究

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化学教育（中英文） 2024年第3期45卷 10-18页

作者：李小峰梁珊珊郑长龙重庆幼儿师范高等专科学校儿童早期发展学院重庆404047 东北师范大学化学教育研究所吉林长春130024

在梳理9个国家或地区科学课程文件基础上,建构了义务教育阶段学生的“物质”核心概念学习进阶理论预设模型和工具检验模型,开发了29个测评项目对其进行了检验。通过SPSS24.0对其克隆巴赫系数进行检验,通过Winsteps3.72.0对其分离度、项... 详细信息

在梳理9个国家或地区科学课程文件基础上,建构了义务教育阶段学生的“物质”核心概念学习进阶理论预设模型和工具检验模型,开发了29个测评项目对其进行了检验。通过SPSS24.0对其克隆巴赫系数进行检验,通过Winsteps3.72.0对其分离度、项目和被试信度、试题难度、模型误差、项目拟合度等进行了检验。510个测评对象来自全国8个省的15所中小学,包括城区学校和农村学校。通过2次测评,最后形成了义务教育阶段学生的“物质”核心概念学习进阶的5个水平。总体上来看,学生的“物质”核心概念理解水平随着年级阶段递增,其中有3个重要的时间节点,分别是4年级、7至8年级和9年级,学生的“物质”核心概念理解在这些时间节点上都有质的飞跃,其概念理解呈现由物理性质和变化向化学性质和变化、由宏观向微观进阶的趋势,研究还发现,学生的“物质”核心概念理解水平不是绝对按照年级阶段递增,会出现一定的跳跃性、波动性。

关键词：学习进阶物质核心概念科学教育义务教育