薛家湾供电局配电网防雷保护经验介绍

介绍了薛家供电局在配电网方面的防雷保护经验,并介绍了提高供电可靠性的其它技术措施。     

110 kV电网主变中性点接地方式的选择

介绍了电网主变中性点接地方式的选择方法,提出了应注意的问题,可为如何选择电网的主变中性点提供借鉴。     

采用MATLAB图像处理技术在鱼病诊断中的应用

本文介绍了一种可以对水产养殖中鱼的病变情况进行监控的系统。通过MATLAB软件中强大的图像处理功能,对读入的图像进行中值滤波、灰度处理和二值处理,然后根据收缩与扩张的原理,编写程序,对二值图像进行数次收缩与扩张,以去除杂质点,最后采用区域矩特征的概念,统计出白色像素的数目,与统计数据相比较,即可判断出是否出现鱼类病变死亡等异常情况。     

浅谈混水直供供热方式的运行特征及经济性

本文主要是对混水直供供热方式在实际应用中的运行特征进行阐述探讨,混水直供供热方式工艺结构简洁、二次网静压定压方式独特—回水阀门定压、运行稳定经济、供热效果良好,重点对混水直供供热方式的运行特征阐述及相对间接供热方式的经济比较分析。     

利用大比例尺地形图计算库区土地淹没面积

在三峡库区重庆市移民规划管理信息系统、丹江口水库移民规划管理信息系统和乌江彭水水电站移民规划管理信息系统的基础上,开发出了利用大比例尺地形图的等高线来实现精确计算库区土地淹没面积的模块.本模块可以应用于土地淹没计算、移民搬迁和城镇新址选择等工作中,经过多个项目的检验,本模块提供的计算数据和淹没示意图既可作为正式的成果数据和图表,也可为高层决策者决策时提供参考.     

Adaptive Maxwell's Equations Derived Optimization and Its Application in Antenna Array Synthesis

In this paper,a self-adaptive method for the Maxwell's Equations Derived Optimization (MEDO) is proposed.It is implemented by applying the Sequential Model-Base...     

CALMODULIN1 and WRKY53 Function in Plant Defense by Negatively Regulating the Jasmonic Acid Biosynthesis Pathway in Arabidopsis

Jasmonic acid (JA) is an important hormone that functions in plant defense. cam1 and wrky53 mutants were more resistant to Spodoptera littoralis than in the wild-type (WT) Arabidopsis group. In addition, JA concentration in cam1 and wrky53 mutants was higher compared with the WT group. To explore how these two proteins affect the resistance of Arabidopsis plants, we used a yeast two-hybrid assay, firefly luciferase complementation imaging assay and in vitro pull-down assay confirming that calmodulin 1 (CAM1) interacted with WRKY53. However, these two proteins separate when calcium concentration increases in Arabidopsis leaf cells. Then, electrophoretic mobility shift assay and luciferase activation assay were used to verify that WRKY53 could bind to lipoxygenases 3 (LOX3) and lipoxygenases 4 (LOX4) gene promoters and negatively regulate gene expression. This study reveals that CAM1 and WRKY53 negatively regulate plant resistance to herbivory by regulating the JA biosynthesis pathway via the dissociation of CAM1-WRKY53, then the released WRKY53 binds to the LOXs promoters to negatively regulate LOXs gene expression. This study reveals WRKY53′s mechanism in insect resistance, a new light on the function of WRKY53.     

机动车尾气监测技术及监测平台的实现研究

随着城市化进程不断加快,机动车保有量激增,尾气污染问题日益严重,在国内大、中城市多呈现以机动车污染为特点的大气复合型污染城市病,机动车尾气排放已成为影响空气质量的主要来源.本文对汽车尾气遥感监测平台进行了研究,并从尾气监测、车辆筛选等方面分析了该平台的应用情况.该监测平台能够获得较客观的尾气监测结果,有助于强化机动车尾...