Dongtan Modern Agro-park Landscape Evaluation and Landscape Mode Design

Agro-park landscape is an important and special type of rural landscape, the multi-funcitons of modern agro -park are agricultural high-tech demonstration, rural landscape tourism, ecology eduacation et al. In order to clarify how to reserch agro-park landscape and design landscape modes in Dongtan modern agro-park, the landscape patterns, ecological maker, and environmental color were investigated firstly, then, the agro -park landscape evaluation method was established, finally, the landscape evaluation and landscape mode design were studied. The Dongtan modern agro-park lanscape evaluation indexes include three levels, namely, rule layer B( 3 items), and index layer C( 9 items), index layer D(26 items), the value of landscape comprehensive evaluation is 0.51 based on the comprehensive evaluation model. The landscape design modes of the Dongtan modern agro-park include landscape structure design mode-spacial increasing form in growth ring style, landscape element combination mode design and environmental color mode design. This research has established a significant foundation for further lanscape detail design and landcape management of a Dongtan modern agro-park.     

一种U型宽带微带天线的设计与制作

对微带天线频带的展宽方法进行了研究,借助于时域有限差分法进行数值计算.经过反复修改设计,选择了在接地板"开窗"的方法,并且贴片设计为"U"型结构.对天线的散射参数、方向图等参数进行了仿真分析;用聚四氟乙烯玻璃漆布敷铜板作为原材料、对天线进行了实际制作;用AV3616XA射频微波网络分析系统对天线进行了测试.均得到了较好的结果,相对带宽达到了27%.     

钢管砼拱桥模型构建及自振特性对比分析

以云南省海口大桥为研究对象,基于ANSYS软件分别考虑墩底固结和土-桩-结构相互作用,建立了该桥的两种三维有限元模型,以此为基础进行了两种模型的自振特性对比分析;并系统地介绍了两种中承式钢管砼系杆拱桥简化模型的构建方法,可为相关研究提供参考.     

城市轨道交通网络短时客流OD估计模型

基于状态空间方法构建适用于城市轨道交通网络的短时客流OD(origindestination) 估计模型.利用自动售检票数据分析得到OD间乘客行程时间分布特征,构建基于行程时间分布的客流到达系数,以此建立OD流与车站进出站客流间相互关系,并以车站客流分离率为状态变量构建结构化OD矩阵估计状态空间模型.以北京市轨道交通为对象进行案例分析,结果表明,当估计时段长度为15 min 时,估计平均相对误差为 35.5%;为30 min 时,估计平均相对误差为20.4%;为60 min 时,估计平均相对误差为 16.3%.所构建模型能能有效解决城市轨道交通短时客流估计问题,具有一定的实用性.     

Key Technology of 3D Geosciences Modeling in Coal Mine Engineering

A new method for simulation technology of laneway engineering seamless excavation based on 3D geoscience modeling(3DGM)was proposed to overcome the deficiency in current research.The generalized triprism(GTP)data model was used as the basic modeling element in this method.The models of geological body were created by the method of rock pillar body partition(RPBP)modeling.The laneway engineering models were built with component method,while the corresponding triangles in sections were connected and transformed into tunnel GTP models.All the GTP models were converted into tetrahedron models based on the smallest vertex identifier(SVID).The simulation and spatial analysis of laneway engineering seamless excavation could be realized through the local hierarchical intersection(LHI)algorithm.The application case showed that the method was fast and effective,and it could meet the needs of design and spatial analysis for mine laneway engineering.     

荧光原位杂交法与免疫组织化学法检测乳腺癌c-erbB-2表达的比较

目的 比较免疫组织化学法(IHC)和荧光原位杂交法(FISH)检测乳腺癌c-erbB-2状态的一致性.方法 选取乳腺癌石蜡标本共50例,其中以IHC法检测c-erbB-2蛋白表达(+)10例、(++)20例、(+++)20例.以FISH法检测上述乳腺癌细胞c-erbB-2基因扩增情况,分析比较两种方法差异性与相关性.结果 在IHC检测乳腺癌c-erbB-2(+)和(+++)时,FISH检测结果与其具有较好的一致性,总符合率为89.2%.在IHC检测c-erbB-2(++)时,FISH结果与其一致性较差,符合率仅为35.3%.结论 IHC可以作为初步筛查c-erbB-2表达的首选方法;IHC检测乳腺癌c-erbB-2(+)和(+++)时与FISH有良好的一致性.因IHC检测c-erbB-2表达(++)时与FISH结果的一致性较差,这类患者在应用赫赛汀治疗时应做FISH确诊.     

阳极时效时间与电解质对Fe—31Mn—7Cr合金钝化膜的稳定性与耐腐蚀性能的影响

运用综合的电化学方法与原子吸收光谱技术，研究阳极时效时间及其电解液对Fe-31Mn-7Cr合金于50％HNO3或1molL^-1Na2SO4溶液中形成的钝化膜的稳定性与耐蚀性的影响。在阳极钝化电位中区，延长Fe-32Mn-7Cr合金在50％HNO3或1molL^-1Na2SO4水溶液中阳极时效时间能增加钝化膜的稳定性与防护性，随之进一步改善合金的耐腐蚀抗力。由1molL^-1Na2SO4水溶液中阳极极化曲线各参数所表征的Fe-31Mn-7Cr(经1molL^-1Na2SO4阳极时效5h后）的耐腐蚀性能接近于1Cr13不锈钢的水平。在强氧化性的50％HNO3溶液中阳极时效表面改性的效果明显优于在中性的1molL^-1Na2SO4溶液中改性。表面改性后，抗腐蚀性能的提高主要归因于钝化膜中Cr氧化物的富集与Fe和Mn氧化物的贫乏。     

镍—钼—磷／聚四氟乙烯复合电沉积工艺研究

在镍－钼－磷（Ni-Mo-P)合金电镀液中加入聚四氟乙烯（PTFE）制得了镍－钼－磷／聚四氟乙烯（Ni-Mo-P/PTFE)复合镀层。研究了镀液主要成份及工艺条件对复合镀层的影响，优选出一种较佳的工艺条件及复合镀液配方。由复合镀层性能测试结果发现，与Ni-Mo-P合金相比，由于PTFE的加入，提高了复合镀层的减摩性，但结合力与硬度略有下降。     

新型Zn—Al合金着色工艺的研究

对新型Ｚｎ－Ａｌ合金（铝含量３３％,锌含量６７％）着色工艺进行了研究,结果表明：由５－碘基水杨酸（浓度１５％）和少量硫酸（浓度为０．２％）组成的电解液能形成稳定、均匀的灰褐角镀层,解决了合金表观色泽问题。     

列车清洗机嵌入淋雨试验台位的改造方案

针对地铁车辆段未配置淋雨试验台位问题,文章介绍现有列车清洗机的工作原理、设备布置和水循环系统,分析地铁车辆淋雨试验的相关要求及改造的可行性,提出在列车清洗机嵌入淋雨试验台位的改造方案.该改造方案可同时满足车辆清洗、淋雨试验的需求.