数字荧光实时频谱分析设备的设计实现

现代电子侦察需要对一段时间内的频谱态势有整体把握,数字荧光技术(DPX)是近年来应用于实时频谱分析中的一项创新性技术,该技术将一定时间段内的频谱态势通过图像直观的显示出来,可以大大提高对信号的捕获和观察能力.为将DPX技术应用到实时频谱分析设备,研究了DPX技术的基本原理,设计了系统的整体结构和数据流程,并制作了系统的...     

ER-Tracker dye and BODIPY-brefeldin A differentiate the endoplasmic reticulum and Golgi bodies from the tubular-vacuole system in living hyphae of Pisolithus tinctorius

Two fluorochromes, ER-Tracker^TM Blue-White DPX dye and the fluorescent brefeldin A (BFA) derivative, BODIPY-BFA, label the endoplasmic reticulum (ER) in hyphal tips of Pisolithus tinctorius and allow its differentiation from the tubular-vacuole system at the light microscope level in living cells. The ER-Tracker dye labels a reticulate network similar in distribution to ER as seen in electron micrographs of freeze-substituted hyphae. BODIPY-BFA stains a thicker axially aligned structure with an expanded region at the apex, which is similar to that seen when hyphae are stained with ER-Tracker dye in the presence of unconjugated BFA. This structure is considered to be ER modified by BFA, a view supported by ultrastructural observations of the effect of BFA on the fungal ER. Both fluorescent probes also stain punctate structures, which are most likely to be Golgi bodies. Neither probe labels the tubular-vacuole system.     

雷达侦察中数字荧光技术的应用研究

数字荧光(DPX)技术是近年来实时频谱分析中采用的一项创新性技术。它大大提高了对信号的捕获和观察能力,非常适合在雷达侦察中应用。本文介绍了DPX技术的基本工作原理,给出了其在宽带雷达信号侦察系统中的设计与实现;结合雷达侦察信号处理,讨论了通过对DPX频谱图采用信号态势分析、图像分割与信号提取、统计轨迹检测等方法,得到直观的特征信息;并将其应用于实际工程中。实践结果表明,DPX技术可以有效地应用于雷达侦察中。     

胺苯磺隆在土壤中的残留及对玉米的药害研究

分别采用土部和水培法测定了不同含量胺苯磺隆对玉米根、芽和茎叶生长的影响。结果表明：土培１５天,胺苯磺隆对玉米根重和干重的Ｉ５０分别为５．６９ｎｇ／ｇ和１６．１８ｎｇ／ｇ,ＩＣ１０分别为０．１４ｎｇ／ｇ和０．４２ｎｇ／ｇ。对玉米茎叶鲜重和干重的抑制率低于对根鲜重和干重的抑制率,水培４天,胺苯磺隆对玉米根鲜重的ＩＣ５０和ＩＣ１０分别为１７．０４ｎｇ／ｍｌ和１．３７ｎｇ／ｍｌ。胺苯磺隆对玉米根鲜重的抑制