水库水生维管束植物的调查方法

<正> 一、调查的必要性水生维管束植物(以下简称水草)是水库水生态系统的组成部分,也是水库的重要资源之一。影响水生植被在水库形成的因素较多,如库水深度、防浪程度、地理位置、水位状况、淹没地区的特征、水土的物理

新疆塔里木盆地北部油气储层测井资料计算机辅助综合解释系统

针对塔里木盆地北部储层类型多、处理技术与解释技术复杂的特点，研制出一个以数据库为核心，具有多种功能，充分利用微机资源的测井资料计算机辅助综合解释系统。该系统由数据库管理、测井资料予处理、测井资料处理与解释程度、图形处理、数理统计软件包等五个子系统组成。系统采用计算机辅助设计思想研制，并采用自行研制的测井专用数据库。该系统配备了砂泥岩解释、复杂岩性解释、裂缝储层解释、地层倾角解释、煤层分析及岩石强度分析等六大类共１４个测井解释软件，３１２个数理统计子程序，可绘制测井曲线图、综合成果图（最多可同时绘出３０条曲线）、直方图、交会图、各种地层倾角图件，并可在大小计算机屏幕上显示声波全波列图。每个测井数据库，最多能容纳１２８条测井曲线。该系统已在西北石油地质局测井站安装运行，在塔北测井资料处理与解释中得到了实际应用

清醒树鼩(Tupaia belangeri chinensis)背侧海马神经元单位活动的观察

采用慢性微电极技术,记录了9只清醒活动状态下的树鼩背侧海马的93个神经元的单位放电。结果表明,其自发活动的放电形式有单个不匀,单个均匀,束状和组群发放四种。其比例为单个不匀>组群发放>束状>均匀发放; 其放电频率可分为高、中、低三类单位。频率分布曲线表明,放电频率为中频(3—10次/秒)的单位呈现峰值分布

White-Light Electroluminescence with Tetraphenylethylene as Emitting Layer of Aggregation-Induced Emissions Enhancement

<div class="para"><p>Tetraphenylethylene (TPE) based molecules with easy synthesis, good thermal stability, and especially their aggregation-induced emissions enhancement (AIEE) effect recently become attractive organic emitting materials due to their potentially practical application in OLEDs. Herein, the AIEE behaviors of tetraphenylethylene dyes (TMTPE and TBTPE) were investigated. Fabricated luminesent device using TMTPE dye as emitting layer displays two strong emitting bands: the blue emission coming from the first-step aggregation and the yellow emission attributed to the second-step aggregation. Thus, it can be utilized to fabricate the white-light OLEDs (WOLEDs) of the single-emitting-component. A three-layer device with the brightness of 1200 cd&middot;m^&minus;2 and current ef?ciency of 0.78 cd&middot;A^&minus;1 emits the close to white light with the CIE coordinates of <em>x</em>=0.333 and<em>y</em>=0.358, when applied voltage from 8&ndash;13 V, verifying that the TPE-based dyes of AIEE effect can be effectively applied in single-emitting-component WOLEDs fabrication.</p></div