期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
High Energy X-ray Telescope Data Analysis Method 被引量:3
1
作者 ZHAO Haisheng LI Chengkui +4 位作者 LI Xiaobo NIE Jianyin GE Mingyu PAN Yuanyue SONG Liming 《空间科学学报》 CAS CSCD 北大核心 2016年第6期938-944,共7页
The science analysis of the data from the High Energy X-ray Telescope(HE) on the Hard X-ray Modulation Telescope(HXMT) satellite is organized in three stages:calibration,screening and extraction of high-level scientif... The science analysis of the data from the High Energy X-ray Telescope(HE) on the Hard X-ray Modulation Telescope(HXMT) satellite is organized in three stages:calibration,screening and extraction of high-level scientific products.At the first stage,the raw PHA value of each event is converted to PI value accounting for temporal changes in gain and energy offset.At the second stage,the calibrated events are screened by applying cleaning criteria.At the third stage,scientific products,i.e.spectra,light curves and redistribution matrix files,are extracted.This work will introduce the three stages as well as the screening criteria and the data combining method. 展开更多
关键词 Energy spectra Light curve Data screen good time interval
下载PDF
蔬菜害虫的化学防治
2
作者 郭志平 《高师理科学刊》 2000年第4期56-58,共3页
论述了蔬菜害虫的生活史及活动规律 ,提出了化学防治的最佳防治时期—适期 ;为提高化学防治效果 ,在调查研究害虫种类、生物特性、活动规律基础上 ,选择适当杀虫剂 ,采取科学方法进行防治.
关键词 蔬菜害虫 化学防治 适期 杀虫剂 安全间隔期
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部