110kV变压器增容更新探析

某厂区电力系统更新后变压器容量增加至40MVA,能效等级提高。现结合110kV总变电站#3、#4油浸式双绕组电力变压器增容更新过程,着重介绍增容改造的一些基本概念、设备选型,阐明增容改造可行性分析、技术关键点,施工过程中的问题、解决措施及投运后的实际使用效果。

氟环唑与氟唑菌酰羟胺及其复配对小麦赤霉病菌的室内毒力及田间防效

为了降低小麦赤霉病菌潜在抗药性的产生,筛选出高效防治药剂,本研究测定氟环唑和氟唑菌酰羟胺及其5种不同配比混剂的室内毒力,并进行了增效组合筛选及田间防效验证试验。结果表明,氟环唑、氟唑菌酰羟胺的EC_(50)分别为0.8702、0.2895 mg/L;氟环唑和氟唑菌酰羟胺按照1∶1质量比混配后的EC_(50)为0.2706 mg/L,协同增效系数为1.6056,具有增效作用。其按质量比1∶1复配后的组合物防效显著优于其单剂的防效及市场上其他单剂防效,最高可达90.16%。

Optimization of the Solid-phase Fermentation Medium of Metarhizium flavoviride by Response Surface Method

Rice flour, puparium of yellow mealworm, peanut shell and sunflower seed shell are made into the culture medium, and the optimal solid-phase fermen- tation formula for M. flavoviride is figured out. In the solid-phase fermentation, Design-Expert is applied to analyze the significance of all components on the sporu- lotion, and response surface method used to optimize the fermentation medium of M. flavoviride. The results show that puparlum of yellow mealworm is the most sig- nificant component for the sporulation; and the optimal medium formula for the fermentation of M. flavoviride： 0.25-g rice flour, 0. 14-g yellow mealworm pupari- urn, 1.00-g peanut shell, and 0.25-g sunflower seedshell. In this optimal medium, the sporulation achieves 100. 013 × 10^8 spores/mL fungal liquid, 31.7% higher than that of the initial design. Application of the optimal formula will reduce the production cost, obtain higher yield of spores, produce no pollution, and offer tech- nical support for the future large-scale production.

基于知识图谱的国内科研能力研究的可视化分析

根据我国《国家中长期科学和技术发展规划纲要(2006-2020)》,到2020年,科技促进经济社会发展和保障国家安全的能力显著增强,基础科学和前沿技术研究综合实力显著增强,进入创新型国家行列,为在本世纪中叶成为世界科技强国奠定基础。