The authors proposed a method for obtaining high-quality acceleration seismograms from velocity type seismograms of digital Seismographic network, and took as an example the analysis and processing o
Using pure S wave fitting method, we studied the shear wave velocity structures under the Ordos block and its eastern and southern marginal areas. The results show that the velocity structure beneath
The earth resistivity and geomagnetic observation data of the Z component from many stations in near-epicentral areas of strong earthquakes are combined and calculated by using a spatial linearity met
Summarizing the existing data of seismological and geological investigations and of strong and intermediate-strong earthquakes in the Sichuan basin and its adjacent areas accumulated by the seismologi
Based on the analysis of the three-year (2000-2002) monitoring data of the four times intermittent stream water conveyance to the lower reaches of Tarim River where the stream flow was dried up for mo
以拟南芥ATHK1基因T-DNA插入所产生的缺失突变体和野生型WS(Wassilewskija)生态型为材料,分析了它们在生理和基因表达方面的差异。结果表明突变体的离体叶片失水率明显大于野生型;在30％PEG-6000胁迫后,野生型和ATHK1突变体的细胞膜离子外渗率比胁迫前分别增加了50％和80％。PEG胁迫48 h时突变体的萎蔫程度明显大于野生型WS。以上结果说明ATHK1突变体的抗渗透胁迫能
在ICT切片重构模型的可视化中,为了分析重构模型的任意截面形状,并且观察该截面的内部结构,需要对重构模型进行剖切。本文针对剖切提出一种简单方法,该方法利用剖切面对重构模型所在的立方体图像空间进行剖切,生成交点集合,然后将空间剖切平面映射到二维图像平面上,最后计算空间剖切平面图像的灰度值,得到剖面图像。通过剖面图像,可以直观地看到内部结构形状,为后续无损检测奠定基础。
电子标签技术是上世纪九十年代发展起来的物品自动识别技术,由于条形码本身具有的一些缺陷,射频识别技术(RadioFrequency ID简称RFID)"电子标签"由此应运而生。RFID射频识别是一种非接触式的自动识别技术,它通过射频信号自动识别目标对象并获取相关数据,识别工作无须人工干预,做为条形码的无线版本,RFID技术具有条形码所不具备的防水、防磁、耐高温、使用寿命长、读取距离大、标签上数据可以