Results 51 to 60 of about 19,278 (163)
This review summarizes the status of musk deer in China, highlighting severe population declines due to illegal hunting and habitat loss, and proposes integrated conservation strategies including habitat protection, captive breeding, and law enforcement to support the recovery and sustainable management of this ecologically and economically important ...
Feng Jiang +8 more
wiley +1 more source
本文是通过对50例风湿性心脏炎患者的循环免疫复合物(CIC)一次测定,并对其中31例作动态观察,了解风湿活动过程CIC的变化。在测定CIC同时作免疫球蛋白、补体、红细胞沉降率、抗链球菌溶血素“O”检查,比较上述免疫指标、非特异性炎症指标和特异性炎症指标在诊断风湿活动的价值。
余步云
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo +8 more
wiley +1 more source
本文介绍了CT-3型弹簧操动机构的技术参数,结构、动作原理,控制线路,及其试验数据。这种机构不需要直流电源,可用交流电源或手动进行分、合闸操作,可节约电站投资,由于改造了合闸弹簧特性,它能够很好地与断路器反力特性相配合。
西安高压开关厂弹簧机构三结合小组
doaj
鉴于传统的地震动强度表征参数(IM)不能有效地反映速度脉冲型地震动的破坏特征,需要研究能够在全周期段内表征速度脉冲型地震动强度的参数。本文首先从NGA-West2强震数据库中选取了236条速度脉冲记录,分析了42种地震动参数之间的相似性和相关性,初步给出了速度脉冲型地震动强度的表征参数;其次,利用单自由度体系动力时程分析方法,研究了不同延性μ条件下速度脉冲型地震动强度表征参数与最大非线性位移um之间的相关性系数随周期T的变化特征 ...
Xiaofen Zhao +3 more
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Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
在断路器所有故障中,机械故障占有相当大的比重,对其机械特性在线监测具有重要现实意义。文中针对某12 kV交流中压真空断路器,以分合闸线圈电流信号、角位移信号及振动信号为监测对象,研制了一种以STM32F407为主控芯片、搭载RT-Thread实时操作系统的交流中压真空断路器机械特性在线监测装置。该装置采用HNC-661霍尔电流传感器捕获分合闸线圈电流,判断断路器分合闸的动作起始时刻;在低电位处采用WDD35D4-5kΩ角位移传感器替代直线位移传感器间接测量动触头的位移曲线 ...
谭佳明 +5 more
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Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
wiley +1 more source
特高压断路器是特高压输电系统的重要控制和保护设备,而液压操动机构是其核心部件之一。介绍了特高压断路器用大功率液压操动机构的工作原理,建立了相应的数学模型,在此基础上建立了液压操动机构的仿真模型,对其机械行程特性与缓冲特性进行仿真分析,并通过试验测试来验证仿真模型的准确性,最后对液压操动机构的缓冲特性进行优化。
孙艳玲, 王永良, 雷琴, 李铁
doaj
One‐Sidedness and the Inferior Function in Coriolanus and Timon of Athens
Abstract For both Jung and Shakespeare, one‐sidedness is the fundamental tragic trait. Jung proposed that as an individual develops, they inevitably associate their identity with certain modes of perception and interaction, and that this leads to psychological polarization.
Sofie Qwarnström
wiley +1 more source

