【摘 要】
：
This study aims to validate and improve the universal evaporation duct(UED)model through a further analysis of the stability function(Ψ).A large number of hydrometeorological observations obtained fro
【出 处】
：
Journal of Meteorological Research
论文部分内容阅读
This study aims to validate and improve the universal evaporation duct(UED)model through a further analysis of the stability function(Ψ).A large number of hydrometeorological observations obtained from a tower platform near Xisha Island of the South Ch
其他文献
日本冈山大学生物学教授沈建仁的科研团队在近日发行的美国《科学》杂志上发表研究成果称,已究明在植物光合作用中起重要作用的蛋白质的结构。在与光合作用原理相同的将光能转化成动能的太阳能发电等领域,该研究成果有望被应用于提高能量转换效率。
目的利用光学投影断层成像系统对小鼠离体心脏和肝脏进行三维成像,进而通过考察三维成像效果研究光学投影断层成像的应用价值。方法对小鼠进行心脏灌注,分别取出心脏、肝脏组织,并对组织进行琼脂包埋、脱水和透明化处理,得到心脏和肝脏样本。利用光学投影断层成像系统采集心脏和肝脏的透射数据,并通过滤波反投影的方法得到心脏和肝脏的三维图像。分析得到的三维图像,研究光学投影断层成像的应用价值。结果通过上述实验方法得到
First of all,using the GPS velocity field from campaign GPS measurements implemented by CMONC( C hina Crustal Movement Observation) a nd TEONC( C hina Tectonic Environment Observation Networks) u p to
Since 2001, there have occurred in succession the 2001 Kunlun Mountains M S8. 1earthquake,the 2008 Wenchuan M S8. 0 earthquake,the 2010 Yushu M S7. 1 earthquake and the 2012 Lushan M S7. 0 earthquake
Fault zone trapped waves( F ZTWs) m ainly travel along the fractured fault zone( F Z)which is of low velocity and high attenuation. FZTWs often carry significant information about a fault s internal
The ground motion attenuation models for PGA,PGV and response spectrum at rock sites and soils sites are derived separately from the digital strong motion records of moderate earthquakes in the Sichua
Several new demands have been put forward for the application of the Beijing continuous GNSS observations due to some particular reasons,such as the limited coverage of the observation network,the dif
我校城市与环境科学学院教师张兴国博士2014年获批国家自然科学基金项目:地理场景协同的多摄像机目标跟踪模型,项目编号:41401436.伴随城市化进程的加速,人类活动日益频繁,活动空间进一步扩大,形成了一个高动态性、多尺度性、非稳定性的复杂地理场景.如何快速、智能感知人类活
The ability of plants to efficiently turn carbon dioxide into hydrocarbons has long fascinated biologists.Its underlying mechanism has,however,remained unclear despite long-term efforts made by scient
通过利用X射线无损检测方法,对缺陷木材进行图像采集。然后对采集到的图像进行预处理,为了提高边缘提取效果:对原始图像、灰度变换增强图像以及中值滤波处理图像分别进行二值化处理,再应用Sobel算子对其进行边缘提取。接着对木材缺陷图像进行阈值的设定研究。我们利用最大类间方差法,寻求最佳阈值,较准确地对木材缺陷图像进行特征提取。对图像分割后,可以使缺陷部位完全从背景中分离。