重庆市江津区水稻病虫害综合防治药效试验

通过设立锐胜+亮盾+福戈+爱苗+顶峰组合、锐胜+亮盾+福戈+阿米妙收+顶峰组合、常规用药、空白对照区等处理,系统调查统计不同处理区的病虫害情况,结果表明锐胜+亮盾+福戈+爱苗+顶峰组合方案及锐胜+亮盾+福戈+阿米妙收+顶峰组合方案对水稻的病虫害防治和抗早衰增产方面都有不错的效果。     

探析文言文中判断句的几种常见形式

判断句是由名词或名词性词组充当谓语,说明主语是什么(肯定判断或不是什么(否定判断)的句子,文章主要探讨了文言文中主语+者+谓语+也,主语+谓语+也,主语+者+谓语,主语+谓语+者也,主语+谓语,主语+副词+谓语和"是"字句的用法。     

浅谈方程x~2+y~2+Dx+Ey+F=0的教与学

本文主要研究方程x2+y2+Dx+Ey+F=0的几何意义及运用,在此基础上拓宽方程x2+y2+Dx+Ey+F=0的应用,以此提升学生学习数学兴趣。     

儿童渗出性多形性红斑免疫功能状况的研究

目的:探讨渗出性多形性红斑不同临床类型与机体免疫功能的关系。方法:选取2010年7月-2013年6月本院收治的轻症渗出性多形性红斑患儿43例(EMM组),重症渗出性多形性红斑(steven-johnson综合征)32例(SJS组),采用散射比浊法检查血清免疫球蛋白和补体,流式细胞仪监测外周血淋巴细胞CD3+、CD3+CD4+、CD3+CD8+、CD3-CD16+CD56+、CD3-CD19+、CD19+CD23+、CD4+/CD8+、CD4+CD25+的表达率。结果:SJS组与EMM组相比,CD3-CD19+及球蛋白水平显著升高,两组比较差异均有统计学意义(P<0.05);CD3+表达率显著下降,两组比较差异有统计学意义(P<0.05);C3、C4、IgA、IgM、IgG、CD3+CD4+、CD3+CD8+、CD3-CD16+CD56+、CD3-CD19+、CD4+/CD8+、CD4+CD25+水平升高,但两组比较差异均无统计学意义(P>0.05)。结论:渗出性多形红斑发病机制与严重程度与体液免疫有一定相关性。     

某高层商住楼基坑支护工程设计综合研究

某项目设计2层地下室,基坑深9m,设计了“钻(冲)孔灌注桩+高压旋喷桩+锚杆”,“土钉墙+钻(冲)孔灌注桩+高压旋喷桩+锚杆”;“挂网土钉+钢管桩+深层搅拌桩+单管旋喷桩+锚杆+堆砂包”等3种复合支护方案,并进行安全、施工、造价比选.     

基于学习成效驱动的暖通专业研究生课程多元化考核方法研究与实践

哈尔滨工业大学暖通学科为研究生开设了基础课、专业基础课和专业课。针对不同类型课程的特点,提出了“期末考试+课程论文+报告答辩”“课堂内容考核+课外阅读考核+综述论文+案例论文+课堂提问+专题讨论”“开卷考试+研究报告+加分计分”“上机实践+研究报告”“课程论文+课堂练习+工程案例分析交流”等多元化的考核方式,注重过程管理。介绍了多元化考核模式及其在暖通学科不同类型课程改革中的应用,以期对其他工科类研究生课程考核提供借鉴。     

柳工欧维姆立体营销的下一步

正下一步欧维姆将从单纯产品的销售转向提供"产品+服务+咨询+投融资+施工+检测、旧桥改造与维修+长期管养……"的一体化、一站式、全方位、全生命周期的解决方案。两个月前,向着世界预应力之巅奋力攀登的柳工欧维姆(以下简称"欧维姆")再下一城,成功签约贵州鸭池河大桥项目,引领中国钢桁架钢绞线体系斜拉桥进了大跨径时代。"下一步欧维姆将从单纯产品的销售转向提供‘产品+服务+咨询+投融资+施工+检测、旧桥改造与     

乙型肝炎病毒感染患者T细胞及IL-6水平的表达及临床意义

目的 探讨乙型肝炎病毒(HBV)感染者T细胞及白细胞介素-6(IL-6)表达的水平及其临床意义。方法 选择2014年1月至2017年6月成都医学院第一附属医院收治的HBV感染者286例(急性乙肝患者48例,慢性乙肝患者192例,乙型肝炎肝硬化患者46例),同时选取同期体检健康者60例作为对照组,实时荧光定量PCR法测定HBV感染者血液中HBV-DNA载量,应用流式细胞仪检测各组T细胞分布,应用酶联免疫吸附法测定各组血清IL-6水平,评价HBV感染者、载量不同HBV感染者的IL-6、T细胞水平及其和HBV-DNA载量的关系。结果 急性组、慢性组、乙肝肝硬化组的CD3+、CD4+、CD4+/CD8+低于对照组(P<0.05),CD8+高于对照组;随疾病进展,CD3+、CD4+和CD4+/CD8+逐渐降低,CD8+、HBV-DNA载量、IL-6水平逐渐升高,各组CD3+、CD4+、CD8+、CD4+/CD8+、HBV-DNA载量、IL-6比较,差异有统计学意义(P<0.05)。低、中、高载量组CD3+、CD4+、CD4+/CD8+低于阴性组(P<0.05),CD8+明显高于阴性组,随HBV-DNA载量增加,CD3+、CD4+和CD4+/CD8+逐渐降低,CD8+、IL-6逐渐升高,各组CD3+、CD4+、CD8+和CD4+/CD8+比较差异有统计学意义(P<0.05)。经Pearson相关分析,HBV感染者CD3+、CD4+、CD4+/CD8+、HBV-DNA载量与IL-6正相关,CD8+与IL-6负相关(P<0.05)。结论 HBV感染者CD3+、CD4+和CD4+/CD8+明显降低,CD8+、IL-6明显升高,T细胞及IL-6水平与疾病类型、HBV-DNA载量有密切关系。     

超长上盖箱形转换结构温度应力分析北大核心CSCD

苏州轨道交通2号线太平车辆段超长上盖箱形转换结构为超长混凝土结构,采用ABAQUS软件计算分析结构的温度作用,通过对升温、降温,恒载+活载+升温、恒载+活载+降温,预应力+恒载+活载+升温、预应力+恒载+活载+降温6种荷载工况进行温度应力计算,主要分析了结构构件的损伤程度、钢筋最大应力,楼板最大裂缝等,并对比分析了施加预应力的作用效果,最终达到有效控制梁板应力的目的。     

钢筋混凝土平法看图 钢筋构造与下料入门(续21) 第八章柱平法看图钢筋构造与下料

<正>(3)抗震框架梁KL上配2排筋、下配1排筋的弯锚计算将图2的端柱锚固部位放大,得到图3,由图3可看出:上部1排钢筋的锚固长度=hc-80+15d;上部1排通长钢筋的预算总长度=框架总长度-hc左-hc右+(hc左-80+15d左)+(hc右-80+15d右)+接头长度=框架总长度-160+15d左+15d右+接头长度;上部1排通长钢筋直径≤25mm时,下料总长度=框架总长度-160+12.07d左+12.07d右+接头长度,上部1排通长钢筋直径25mm时,下料总长度=框架总长度-160+11.21d左+11.21d右+接头长度;上部1排非通长钢筋的预算总长度=ln1/3+hc-80+15d;上部1排非通长钢筋直径≤25mm时,下料总长度=ln1/3+hc-80+12.07d,上部1排非通长钢筋直径25mm时,下料总长度=ln1/3+hc-80+11.21d;上部2排钢筋的锚固长度=hc-130+15d;上部2排钢筋的预算总长度=ln1/4+hc-130+15d;     

高填深挖路基桩板式挡土墙的应用与施工

结合贵州省惠水至兴仁高速公路八标YK83+632～YK83+680,ZK83+752～ZK83+902,ZK85+528～ZK85+600段深挖高填桩板式挡土墙施工实例,介绍了高填深挖路基桩板式挡土墙的应用与施工,详细阐述了桩板式挡土墙的施工技术要点,以指导工程实践。     

Construction of a Butterfly Web Bridge

A new type of bridge called ＂butterfly web bridge＂ is under construction in Japan. In a butterfly web bridge, the butterfly-shaped web forms a structure that exhibits behavior similar to a double Warren truss. The 80 MPa concrete is used for the butterfly web which has a precast plate with a thickness of 150 mm. As butterfly web is a concrete material, reinforcement provided by prestressing tendons is needed on the tension side. Moreover, the 150 mm plate has no re-bars but is reinforced by steel fibers. This bridge, named Takubogawa Bridge, is a highway bridge and has 10 spans including the 87.5 m maximum span length. Takubogawa Bridge is constructed by flee cantilevering method. The butterfly web enables the construction speed of cantilevering to be advanced about 50% compared with conventional cast-in-situ method and can meet the requirement of light weight and low maintenance.     

Optimization of Resource in the Industry of Construction

Time and cost are two of the most important factors to consider in each construction project. In order to maximize performance, both the client and the contractor will work to optimize both the duration of the project and its cost. We show a model of linear entire mixed programming to solve the considered problem. The aim is to minimize the project total time, by means of the assignment of equipments of work to the different production lines of the activities to realizing. The fundamental beginning is to support the same production （rate of production in meters/day of the activity in view of the equipment of work） for tbe different equipments to achieve the maximum efficiency in each period of time. With the limited availability of resources, the work must be continuous and the period of time between operations and final must be kept. However, this paper also presents the bibliographical study on methodologies of the optimization of construction processes in response to the two objectives： time and cost. This will consider the use of recta-heuristic techniques, such as population based algorithms.     

Application of the Principles of Lean Thinking in the Post Construction Department

The increase on the competitiveness, the search on the customer satisfaction, the search by reducing waste in the civil construction were facts which helped entrepreneurs and companies to seek new ways of working, being lean construction one of the ways to get that. Studies report that the application of the lean tools in construction was carried out in an isolated way. This type of application was pointed as a major factor limiting the extent of achievement in implementing lean principles. The aim of this studies is to identify opportunities to implement the principles of lean production in the service department of a construction company in Goi~is, proposing routines that try to implement the continuous improvement of its processes, eliminating waste, reducing the lead time, allow it to perform the mapping processes, applying the just-in-time and among others, providing services that add value to the customer satisfaction. It was possible to establish the average time for each step, allowing to identify possible improvements in the department, from the perspective of lean principles. The research paper concludes by pointing out the activities for the Department of Post Construction work from building companies, from lean concepts.     

Seismic Vulnerability of Building Construction Site

Building construction site plays an important role in the economic aspect of a region. So any disruption due to hazard event like earthquake can cause several direct and indirect damages. Direct damages can lead to the loss of equipments and qualified persons. Indirect damages can lead to inflation and loss of purchasing power. To deal with that situation, parameters that govern the vulnerability of building construction site have been identified. Using a MCDM （multiple criteria decision making） method, the priority order of these parameters has been set. Then a PVI （partial vulnerability index） and a GVI （global vulnerability index） are proposed. These indexes allow the classification of building construction sites according to their intrinsic vulnerability and seismic vulnerability respectively that is through the use of a given classification. Several Algerian building construction sites belonging to different seismic zones were considered in order to show the applicability of the method.     

预应力混凝土连续梁桥上部结构施工技术

结合佛山三水二桥跨三茂铁路连续梁桥上部结构（49＋82＋82＋49）m预应力混凝土刚构-连续结合梁的箱梁施工,介绍了0号块以及直线段现浇施工方案,其他梁段挂篮悬臂施工技术,阐述了挂篮的试压、梁部的线形控制以及合龙段的控制技术等。     

A Comparative Analysis of Owner-Contractor Agreements in the Turkish and US Construction Industry

Successful and cost-effective construction relies upon appropriate communication of the participants of the construction project. Hence, it is important to define the rights and responsibilities of the parties, and relationships among them. In this context, well-designed and complete agreement is essential and necessary for the successfully completion of a construction project within the desired time, quality and budget. In this paper, it is aimed to analyze and compare the owner-contractor agreements in the Turkish and the US construction industry. First, the importance of construction contracts and contractual elements of an agreement is determined, and then, the standard owner-contractor agreement which is used in the Turkish construction industry is analyzed and compared with the US standard owner-contractor agreement. Finally, the differences between these agreements are put forward, the lack and deficiencies of Turkish standard agreement form are determined, and appropriate suggestions are improved.     

朝天门大桥施工方案优化分析

重庆朝天门大桥为190 m+552 m+190 m的三跨连续中承式钢桁系杆拱桥。该桥施工过程复杂,存在多次体系转换,有必要进行施工仿真分析,以确保结构的受力安全和施工的顺利进行。首先介绍了把施工过程看作一种特殊几何非线性的精细化施工仿真分析方法,然后通过施工仿真分析对施工方案进行优化。通过分析,证明了精细化施工仿真分析方法的可靠性和精确性;优化了临时墩脱空方案、边界条件措施等施工方案,保证了大桥的顺利施工。     

Positioning Lean within an exploration of engineering construction

Engineering construction has specific characteristics that separate it from other types of construction such as technical complexity, onerous safety, health and environmental regulations, duality of new build combined with maintenance and repair, largely owner/user commissioning clients, value propositions revolving around a production Process, etc. The recent Gibson report (Gibson, 2009 Gibson, M. 2009. Changing to Compete: Review of Productivity and Skills in UK Engineering Construction, London: Department for Business, Innovation and Skills.  [Google Scholar]) highlighted several significant problems associated with engineering construction in the UK arising, in many cases, from skill shortages and poor client–contractor relationships. Informal observation and a literature review enable 12 factors to be proposed that differentiate engineering construction from other forms of construction. A new paradigm for the construction sector is Lean construction. This is an adaptation of Lean production and is based on a philosophy that focuses on delivering improved value through the assembly of problem-solving networks of knowledgeable and skilled people. Accepting that Lean construction exists in theory as a method for improving a raft of construction production issues, the question is asked here as to whether it is also relevant to the set of additional factors identified as applying specifically to production in an engineering construction context. The discussion concludes that Lean construction principles can be applied in engineering construction and that an improvement in value could be achieved. Note: throughout this paper the word ‘process’ is used in two contexts—the design and construction process and the end Process that is the function of the client business, e.g. water treatment Process, food manufacturing Process. The context is distinguished by the capitalization of the first letter.     

岩堆路堑挂板式挡土墙施工技术

介绍了在达万铁路李河车站KD133 290－DK133＋386段路堑施工中，通过运用挂板墙施工技术，减少了开挖土石方作业量和占用土地数量，并保证了边坡的稳定，便于机械分层开挖施工和工厂化生产。其中着重介绍了挂板墙的施工工艺、施工方法及其优缺点。