Results 31 to 40 of about 1,145,122 (162)
Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
New Phytologist, Volume 250, Issue 2, Page 1231-1247, April 2026.Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2013 目的探讨脂蛋白酯酶(lipoprotein lipase,LPL)基因HindⅢ酶切位点多态性在塔吉克族健康人群中的分布及其在不同民族间的分布差异。方法应用聚合酶链反应(PCR)技术检测91例塔吉克族(男性36人,女性55人)LPL基因型并计算出其基因型频率及等位基因频率,并通过查阅文献[10-17]结合统计学软件进行了不同种族间的基因型分布差异比较。结果塔吉克族91例正常人群中H+H+,H+H-,H-H-基因型频率分别为62.64%,31.87%,5.49%,H+,H-等位基因频率分别为78.57 ...
祖克拉·肉孜 +3 more
doaj
Impacts of Human Development on Wildlife Use of Corridors in Botswana 人类开发对博茨瓦纳野生动物廊道利用的影响
Integrative Conservation, Volume 5, Issue 1, Page 164-171, March 2026.This study examined the effect of landscape‐scale human impact on wildlife in Botswana. We examined how species use wildlife corridors in two different human‐dominated landscapes. We identified differences in temporal overlap between wildlife and humans across both landscapes, which is fundamental to consider in both current and future conservation ...
Tempe S. F. Adams +3 more
wiley +1 more source
An Abnormal Detection Method of Frequency Converter Based on Big Data Analysis
, 2021 变频器设备机理复杂、设备监测数据异常样本少,导致在实际应用中基于经验和基于模型的异常检测方法操作性难、常规的数据驱动方法可行性差。针对上述问题,结合密度峰值聚类与时序运行数据的转移特点,提出一种基于大数据分析的变频器异常检测方法。该方法首先通过密度峰值聚类将运行数据聚类,然后将时序过程数据在不同类簇间的动态变化规律用概率表示,并基于聚类结果和转移概率提出异常检测体系框架,最后通过异常案例验证该方法的有效性,表明该方法能够正确识别变频器异常行为。
高原, 闫会玉, 郑泽宇, 宋宏
core
Gaoya dianqi, 2022 断路器分合闸过程中不可避免产生微米级金属粉尘，对GIS设备内部绝缘状态具有重要影响。文中以真型363 kV GIS为基础，搭建了可进行520 kV工频耐压、1 175 kV雷电冲击耐压的试验平台，用以开展微米级异物下GIS设备绝缘状态影响研究。首先基于2 000次机械操作开展微米异物分布特征研究，获取了触头不同磨损次数下的微米级异物变化趋势。其次在不同操作次数下采用脉冲电流法进行放电量检测，同时联合特高频、超声波局部放电检测法，分析不同检测方法对微米级异物放电检测灵敏度 ...
牛勃 +5 more
doaj
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract As the global protected area (PA) network expands to meet international targets, it is important to assess whether traditional reliance on public land will suffice for projected PA growth or whether other tenures, such as Indigenous or pastoral lands, may increasingly contribute.
Emmeline Norris +2 more
wiley +1 more source
Carbon Material Films for Flexible and Efficient Electromagnetic Interference Shielding: A Review
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT With the rapid development of technology such as the Internet and electronic devices, electromagnetic radiation pollution has become an increasingly prominent issue, which negatively impacts both human health and the normal operation of equipment.
Yu‐Xin Chen +10 more
wiley +1 more source
, 2018 本发明涉及异步电机控制方法技术领域，具体地说是基于变频器供电侧电流的异步电机非侵入式转速估计方法。包括以下步骤：步骤1，采集异步电机变频器供电侧电流；步骤2，根据获取的变频器供电侧电流，使用Teager‑Kaiser能量算子进行解调制变换；步骤3，提取变频器供电侧电流Teager‑Kaiser能量算子解调制变换后的特征信号；步骤4，对提取的特征信号进行快速傅里叶变换，谱峰估计寻找转子速度谐波，最终完成异步电机转速估计。本发明基于变频器供电侧电流信号分析估计异步电机转速，避免了光电编码器等速度传感器的安装，
白晓平 +6 more
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Zhongguo shiyan zhenduanxue, 2012 目的探讨COMT基因Met多态与子宫内膜异位症的关系。方法采用蛋白酶K消化-饱和酚氯仿法提取外周血白细胞基因组DNA,聚合酶链式反应-限制性片段长度多态性（PCR-RFLP）方法分别对120例子宫内膜异位症患者（内异症组,含59例腺肌病患者）和65例非内异症及腺肌病女性（对照组）进行COMT基因分型。结果 （1）内异症组和对照组G/G、G/A和A/A基因型频率分别为17.5%、43.3%和39.2%,9.2%、50.8%和40.0%,差异无统计学意义;内异症组和对照组A等位基因频率分别为27.1%和29.
张峰, 赵洁, 曲银娥
doaj
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 27-33, January 2026.ABSTRACT Objective To assess the effectiveness of the first‐trimester anomaly scan (FTAS) performed as part of a centrally steered national screening program in The Netherlands by investigating false‐negative cases with a fetal structural anomaly that was not detected at the FTAS.
K. Bronsgeest +18 more
wiley +1 more source