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Search Results: 1 - 10 of 30721 matches for " 卢业凌 "
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番 木 瓜 叶 片 总 R N A 提 取 方 法 比 较 研 究
陈 萍,姜成东,
北方园艺 , 2010, DOI: 10.11937/BFYY.201018053
Abstract:
?果叶片气孔观察方法研究
姜成东蔡胜忠
热带农业科学 , 2008,
Abstract: 研究了离析法;透明胶带粘取法;印迹法;撕取法;刮片法等5种制片方法观察?果(芒果)叶片下表皮气孔的效果。结果表明:利用刮片法、印迹法和离析法均能制片,观察到气孔;刮片法制片简便,真实性好,清晰度高,但取样面积较小;印迹法易于操作,取样面积高,但清晰度和真实性较差;离析法真实性好,清晰度高,但取样面积较小,操作较繁琐,费时较长。撕取法和透明胶带粘取法无法制片不适用于?果叶片气孔的观察。
典型工程变形监测的一种新方法及应用研究
Study on a New Method for Typical Deformation Monitoring Projects and Its Applications
 [PDF]

梁龙昌, 松耀,
Geomatics Science and Technology (GST) , 2014, DOI: 10.12677/GST.2014.23006
Abstract:

针对广州城市地铁、高支模工程和大型基坑变形监测实际,本文研究总结了一种基于测量机器人的变形监测新方法,即混合基点网法和多点强制自由设站边角交会法,并成功应用于多个典型工程。实践证明,该方法简单易行,自动化程度高,监测精度可满足多种典型工程的变形预警要求。
According to the actual situation of high-formwork engineering and large deformation monitoring in Guangzhou subway, this paper studies the new method of monitoring based on measuring the deformation of a robot, that is a mixed base-point network method and multi-point & compulsory free-station linear-angular intersection method, and it was successfully applied to a number of typical projects. Practice has proved that the method is both simple with high degree automation. At the same time, monitoring accuracy can meet the requirements of a variety of typical deforma- tion warning works.

动态环境中的竞争战略思维

科技进步与对策 , 2002,
Abstract: 环境的动态变化对企业竞争战略提出了新的挑战。它要求企业转变战略思维模式,从线性思维模式转向动态组织学习模式,从静态竞争思维转向动态竞争思维,从局部的产品竞争思维转向全程竞争思维,从竞赛式竞争思维转向超越式竞争思维,从对立竞争思维转向合作竞争思维。企业竞争战略思维模式市场竞争
一个科技副市长的足迹――记黄世强同志二三事
,
科技进步与对策 , 1992,
Abstract:
上海市劳动力产业配置效率研究
,元 ?
期刊检索-中国人口科学 , 1998,
Abstract: 在市场经济环境下,劳动力的生产效率比传统计划体制环境发生历史性过渡或转换之前要高得多。尽管如此,劳动在经济增长中的贡献率仍呈直线下降趋势。在诸多可能具有说服力的原因中,产业结构的调整和转变滞后于经济发展和市场结构的变化,是造成这种状况的一个极其重要的原因。本文以上海市为例对90年代劳动力在三次产业结构中分布的历史与现状进行了实证分析,用生产要素贡献率的方法对上海市三次产业中劳动力配置效率的情况进行了初步分析。
中国农业劳动力占比变动因素估测:1990~2030年
,伟 ?
期刊检索-中国人口科学 , 2012,
Abstract: 【摘要】在模型演示农业劳动力占劳动力总量比率受农业劳动力新进入量、退出量、转出量及非农劳动力变化等因素影响的基础上,文章估测了1990~2030年上述各指标的变动及贡献。在未来农业劳动力占比中位降速假设下,农业劳动力新进入量将从2005~2010年的2023万人下降到2025~2030年的1142万人,转出量与退出量分别从4220万人和3843万人下降到2704万人和2949万人,非农就业新增量从6969万人下降到3508万人。2005~2010年新进入、退出和转出量对占比下降影响分别为-15.1%、34.7%和38.1%,预计三者对2025~2030年占比变动的影响将分别变为-22.6%、54.3%、49.8%。针对农业劳动力转移与非农就业岗位创造压力趋于缓和但仍将长期存在的特点,作者认为,中国就业政策应从侧重数量扩张向"数量与质量、速度与结构"并重的方向调整。更多还原?
广州市珠江新城地铁变形监测预警系统的 研究与应用
Study of the Monitoring and Warning System for Metro Deformation in Zhujiang New Town Guangzhou and Its Applications
 [PDF]

梁龙昌, , 丘志宇
Geomatics Science and Technology (GST) , 2014, DOI: 10.12677/GST.2014.22003
Abstract:
本文针对广州市珠江新城地铁集运隧道段的变形监测项目,采用高精度测量机器人进行移动式自动化周期监测,对监测网设计、监测方法、监测数据处理和应用效果作了较深入的研究,对于类似监测项目具有参考应用价值。
In this paper, we use high-precision mobile robots to automatically and periodically monitor the deformation of Metro tunnel in Guangzhou Zhujiang New Town. We investigate the monitoring network design, monitoring methods, data processing and the corresponding applications. This investigation is applicable to similar monitoring projects.
西藏日土县奴雷地区古近纪火山岩新发现及构造意义
New Discovery and Tectonic Significance of Paleogene Volcanic Rocks in Nulei Area, Ritu County, Tibet
 [PDF]

, 国卿, 高原
Advances in Geosciences (AG) , 2019, DOI: 10.12677/AG.2019.910105
Abstract:
日土县奴雷地区火山岩岩石类型为粗安岩,属于次铝的或偏铝的火山岩,高钾钙碱性系列。稀土配分显示属轻稀土富集型,重稀土平坦,δCe=0.89,δEuN=0.90~0.92,以弱铕负异常为特征,分配曲线为右倾型。火山岩喷发方式为裂隙中心式,以喷溢相为主,喷发的火山岩成分以安山质岩浆为主,获得粗安岩LA-ICP-MS锆石U-Pb年龄为34.7 ±0.5Ma,形成时代属古近纪始新世。从岩石地球化学特征来看,火山岩原始岩浆来源于青藏高原加厚陆壳之下与岩石圈地幔之上的特殊壳幔过渡带,岩石形成环境为板内初始裂谷环境,兼具了板块边缘造山带的岩石地球化学性质,是青藏高原汇聚隆升演化阶段陆内俯冲成因机制的产物。
The volcanic rocks in Nulei area of Ritu County belong to coarse andesite, subaluminium or me-taaluminium volcanic rocks and high potassium calc-alkaline series. Rare earth partition shows that it belongs to light rare earth enrichment type with flat heavy rare earth, δCe=0.89, δEuN=0.90-0.92. It is characterized by weak negative Europium anomaly and its distribution curve is right-leaning. The volcanic rocks erupt mainly in the form of fissure-centered facies, and the vol-canic rocks erupt mainly in andesite magma. The LA-ICP-MS zircon U-Pb age of the trachyandesite is 34.7 ± 0.5Ma, which belongs to the Paleogene Eocene. According to the geochemical characteristics of the rocks, the original magma of the volcanic rocks originated from the special crust-mantle transition zone beneath the thickened continental crust and above the lithospheric mantle of the Qinghai-Tibet Plateau. The formation environment of the rocks is the initial intraplate rift environment, which possesses both the lithogeochemical properties of the orogenic belt on the plate margin and is the continental land in the convergence and uplift evolution stage of the product of the genetic mechanism of internal subduction.
药物代谢研究在新药开发中的作用
赵冬梅,李燕,
药学学报 , 2000,
Abstract:
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