Results 31 to 40 of about 907,816 (137)
Zhongguo shiyan zhenduanxue, 2014 目的探讨不同负荷游泳运动对大鼠学习记忆的认知能力及海马神经型一氧化氮合酶（n-NOS）表达与疲劳机制。方法将40只体重为350-400g的Wistar雄性大鼠分为对照组和每天进行15mins、30mins、60mins的小中大负荷游泳运动的实验组;实验持续8周后采用"Y迷宫"进行学习记忆能力测试;利用S-P免疫组化染色法检测海马神经n-NOS的表达水平。结果学习记忆的达标次数和错误次数,中等负荷组显著低于对照组和大负荷组 ...
刘忠民, 高喆, 牛娜, 董炜达
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu +3 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2011 目的探讨不同运动负荷对大鼠海马神经c-fos表达的影响机制。方法将40只Wistar雄性大鼠随机分为对照组和每天进行15 mins、30 mins、60 mins的小、中、大负荷游泳训练的实验组。实验8周后,利用S-P免疫组化法,检测海马神经c-fos的表达水平。结果与对照组相比,中、大运动负荷组均具有非常显著性差异 ...
刘忠民 +4 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
, 2009 活塞是内燃机的高热负荷零部件,能否有效地评估其热强度已成为制约研发高可靠性发动机的瓶颈因素之一。针对活塞实机工况热负荷损伤特点,利用激光时空分布可控性特性,设计了活塞激光热负荷试验平台。该系统能仿真受热构件特定的温度分布和波动,评估受热构件的热强度,为受热构件结构的优化 ...
庞铭 +4 more
core +2 more sources
Gaoya dianqi, 2020 为了实现负荷开关弹簧操作机构的故障诊断,建立了储能电机的动态仿真模型对储能电机电流和操作机构力矩关系进行了验证,同时进行了故障模拟试验,测量并分析了负荷开关操作机构分合闸弹簧卡涩、传动齿轮卡涩的储能电机电流的变化规律,并与正常情况下的结果进行了对比,研究了储能电机电流的特征量对操作机构状态的影响,并采用皮尔森相关系数法对特征量进行降维处理;针对负荷开关操作机构出现的主要故障问题,采用基于决策树的支持向量机实现对负荷开关正常状态、传动齿轮卡涩、储能弹簧卡涩的3种状态进行辨识 ...
赵莉华, 金浩文, 黄小龙, 王仲
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Photocatalytic hydrogen production from water splitting is a promising strategy for sustainable and clean energy generation. However, the design of low‐cost, highly active photocatalysts remains a critical challenge. In this study, covalent organic frameworks (COFs) were loaded onto the surface of Cd0.9Cu0.1S to fabricate COF/Cd0.9Cu0.1S ...
Yue Zhao +3 more
wiley +1 more source
, 2013 本文主要回顾了有关选择超负荷效应的相关研究,选择超负荷效应是指当个体面临过多的选项时,会导致更多的负性结果,从选择超负荷效应的相关概念、作用机制已及影响因素3方面进行了概括和阐述,并对未来的研究进行了展望,希望能进一步明确过多选择的操作性定义 ...
马继伟, 陈毅文
core +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho +7 more
wiley +1 more source
, 2019 针对电力负荷预测中存在的随机性、不确定性的问题,结合深度学习算法具有很强的自适应感知能力等特点,采用目前较为主流的深度学习方法,如长短时记忆(LSTM)网络、门循环单元(GRU)神经网络和栈式自编码器(SAE),分别研究其应用于电力负荷预测时的效果。研究发现,将历史负荷数据作为三种深度学习预测模型的输入时,三种预测模型的负荷预测精度指标评估结果各有不同。因此,为了全面评估三种预测模型的预测效果,提出将不同时间段内的相同历史负荷数据作为预测模型输入对比各模型的负荷预测精度,从中找出最佳的预测模型 ...
张建寰, 吉莹, 陈立东
core +1 more source