Results 71 to 80 of about 37,717 (232)
基于体表电场的110 kV电缆终端绝缘子带电作业方式选择研究
110 kV高压电缆终端的结构紧凑且电场分布复杂,而带电作业人员的体表电场分布是制定安全防护和作业方式的重要依据。针对典型的110 kV电缆户外终端,建立带电作业人员在地电位、中间电位和等电位3种作业方式下的电场仿真模型。分析结果表明:A相地电位作业时,作业人员体表电场随着靠近电缆终端而增大,在肩部与电缆终端平台平行时增加到77.91 kV/m; A相等电位作业,水平方向远离电缆终端电场减小,超过0.3 m时,体表电场会出现一个最大值;B相中间电位作业,人体头、手、脚3个部位畸变场强较大,竖直方向移动时,
何光华 +4 more
doaj
Design and Implementation of Canteen Management Information System for a Vocational College [PDF]
摘要 随着信息技术的高速发展,各类信息化技术也迅速普及推广到各行各业,成为经济和社会发展的助推剂。食堂管理信息系统作为保证食堂信息管理的重要内容,其信息化建设程度能进一步加强食堂的资源整合,提升高校食堂管理的质量。当前食堂信息管理针对的各类服务事宜具有餐点安全、采购高效、食品色香味俱全、财务统计清晰流畅等需求,由于高校现已经普及了校园一卡通消费和服务,且如二维码点餐等先进的技术应用逐渐普及,因而其资金结算方面流程更加多样、操作更加复杂。鉴于当前通信技术和计算机技术的快速发展 ...
黄金成
core
Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair +17 more
wiley +1 more source
腺苷A2A受体阻断剂SCH58261对大鼠杏仁核点燃癫痫模型的影响
目的研究腺苷A2A受体阻断剂SCH58261对大鼠杏仁核点燃癫痫模型的作用。方法制作杏仁核电刺激模型。点燃成功后的大鼠,通过腹腔给药的方法,观察SCH58261对模型成功后各发作参数的作用。整个实验过程中,严密观察药物对大鼠行为学的影响。结果在成功点燃的癫痫模型中,SCH58261(0.005,0.05,0.5mg/kg)对全面性发作阈值(GST)没有影响。以GST(+4μA)为刺激强度,SCH58261(0.005,0.05mg/kg)可以降低杏仁核后放电时间(ADD),运动性发作持续时间(MSD ...
李巷 +5 more
doaj
论外国文学研究“中国化”的逻辑起点及其启示——以1920—1930年代的“小国文学”研究为例 [PDF]
学界一般认为,外国文学研究"中国化"的起点是郑振铎的《文学大纲》,然而今日外国文学研究的"中国化"理论和实践,从逻辑上与郑振铎并非一脉相承。对早期外国文学研究史料的爬梳和分析表明,外国文学研究"中国化"的逻辑起点应当是"小国文学"研究。1920—1930年代,中国的外国文学研究界延续了"五四"以来对于"小国文学"的偏爱,以期望获得对中国社会有帮助的经验。"小国文学"研究奠定了外国文学研究的基础,并为外国文学研究"中国化"提供了可能的路径,但政治化与时代化两大特征,也是其历史局限性所在 ...
韩晗
core
TACE with Ar-He Cryosurgery Combined Minimal Invasive Technique for the Treatment of Primary NSCLC in 139 Cases [PDF]
Background and objective TACE, Ar-He target cryosurgery and radioactive seeds implantation are the mainly micro-invasive methods in the treatment of lung cancer.
Dongmei LI +5 more
core
Biodiversity‐driven spatial conservation planning to delineate temporally stable regions
Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella +5 more
wiley +1 more source
Impact of intercropping of rice cultivars on methane emissions(水稻品种间作对甲烷排放的影响)
Diversified farming of crop cultivars is an effective measure for improving agroecosystem functions. However, there is still a lack of research on the effects of mixed planting of different cultivars on greenhouse gas (GHG) emissions. In this study, rice
NA Haowei(那好为) +5 more
doaj +1 more source
Research on Wang Shilang’s years in Guangdong Province [PDF]
作为跨越语言的一代台湾知识分子,王诗琅具有社会运动者、文学创作者、记者、编辑、民俗研究者等多重身份。1937年他去上海短暂停留数月即返台。1938年,王诗琅前往广州,在《广东迅报》工作,直至1946年返台,前后长达八年。但关于王诗琅在广州的相关史实,不仅其本人讳莫如深,目前学界也鲜有关注。本文想要尝试推寻王诗琅记事中所存在的断裂与缝隙,重构王诗琅生命历程中被遮蔽的角隅。本文重点探讨的内容有三点,一是考察广州时期王诗琅的文化活动。《广东迅报》是王诗琅在广州期间参与编辑的报纸,是其文化活动的主要平台 ...
谭冰清
core
Perceived costs as drivers of wildlife management preferences in rural Tanzanian communities
Abstract Effectively managing human–wildlife interactions is crucial for fostering coexistence on shared landscapes. Management options are most effective when aligned with the preferences of people directly affected by wildlife, yet little is known about how socioecological factors influence these preferences.
Christian Kiffner +10 more
wiley +1 more source

