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工程施工技术, 2023 文中主要讲述了振动试验的基本原理，对电动振动系统进行校准时相关参数的不确定度评定方法，主要针对频率、加速度、随机振动加速度总均方根值、随机振动加速度功率谱密度值、台面加速度幅值均匀度、台面横向振动比。
杉林 唐
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Rare Metals, Volume 42, Issue 1, Page 234-243, January 2023., 2023 Graphical abstract Abstract The heating and helicity effects induced by circularly polarized laser excitation are entangled in the helicity‐dependent all‐optical switching (HD‐AOS), which hinders understanding the magnetization dynamics involved. Here, applying a dual‐pump laser excitation, first with a linearly polarized (LP) laser pulse followed by a
Guan‐Qi Li +9 more
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EasyDCP: An affordable, high‐throughput tool to measure plant phenotypic traits in 3D
Methods in Ecology and Evolution, Volume 12, Issue 9, Page 1679-1686, September 2021., 2021 Abstract High‐throughput 3D phenotyping is a rapidly emerging field that has widespread application for measurement of individual plants. Despite this, high‐throughput plant phenotyping is rarely used in ecological studies due to financial and logistical limitations.
Alexander Feldman +5 more
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Journal of Advanced Nursing, Volume 77, Issue 3, Page 1546-1555, March 2021., 2021 Abstract Aims Determine sex‐ and age‐associated psychophysical and neurophysiological differences in the processing of pain across the adult lifespan. Design Preliminary, exploratory, cross‐sectional study. Methods Using psychophysics (to measure intensity and unpleasantness) and functional magnetic resonance imaging blood oxygenation level dependent ...
Sebastian W. Atalla +8 more
wiley +1 more source
The vibration environment prediction method based on OPAX
Xibei Gongye Daxue Xuebao, 2022 准确获得飞机结构及机载设备的振动环境至关重要, 传统的振动环境预计方法预计准确度低, 可能会导致后期振动环境试验过试验或欠试验的问题。创新性地提出了一种基于扩展工况传递路径分析(OPAX)的振动环境预计方法, 采用实测数据搭建振动环境预计模型, 再利用该模型对新工况下的振动环境进行预计。试验室环境下, 搭建了某型飞机典型设备舱振动测试系统, 基于OPAX方法搭建了机载设备的振动环境预计模型, 并对其预计准确度进行了验证。对比预计结果与试验结果, 得到: ①新工况下模型预计均方根值与试验测试均方根值相比,
LI Yixuan +3 more
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工程技术与管理, 2020 论文从“活塞杆跑偏”这个方面对压缩机振动大、工况不稳定的现象进行重点分析，并针对该问题提出一些有效解决的方法。
平 陈 +3 more
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水电水利, 2020 本文针对东雷抽黄灌区水泵机组振动的原因分析及处理,在简要阐述水泵机组振动危害的基础上,分析了引发振动的主要原因,并提出合理的处理措施。分析结果表明,水泵机组振动,对水泵运行效率及使用寿命皆有非常重要的影响,找到引发振动的根源,并选择合理的处理方法,可大幅度提升提升水泵机组运行的稳定性,延长使用寿命,值得高度重视。
艳 杨, 建锋 翟
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工程技术与管理, 2020 我公司主洗甲醇泵出现轴承振动值远远大于参考值，多次更换轴承并调整电机与泵轴同心度，但是振动依然未得到改善。通过计算用切割离心泵叶轮的方法最终解决振动问题，论文论述了离心泵叶轮切割改善振动的方法，并在实际工程维修中取得较好效果。
俊良 贺, 林东 李, 旭林 李
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Distributed pod wing modeling and aeroelastic analysis
Xibei Gongye Daxue Xuebao, 2022 基于准线性化隐式建模方法, 建立适用于大展弦比机翼的动力学模型, 研究分布式吊舱机翼的气动弹性特点。其中结构模型采用中等变形梁模型, 气动模型采用准定常理论, 利用小扰动和有限差分法, 建立求解机翼气弹稳定性的方法。在验证结构和气动模型准确性基础上, 研究吊舱的个数、质量、展向站位、弦向/法向偏置等参数对分布式吊舱机翼气动特性的影响。分析结果发现: 吊舱越靠近机翼中部、弦向和法向偏置越大机翼稳定性越高, 但质量分布不均时反而会降低稳定性; 机翼经历了振动收敛、单频简谐振动和倍频简谐振动 ...
CHENG Yi +3 more
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Historical and contemporary indigenous marine conservation strategies in the North Pacific
Conservation Biology, Volume 34, Issue 1, Page 5-14, February 2020., 2020 Abstract Strategies to reduce, halt, and reverse global declines in marine biodiversity are needed urgently. We reviewed, coded, and synthesized historical and contemporary marine conservation strategies of the Kitasoo/Xai'xais First Nation in British Columbia, Canada to show how their approaches work.
Natalie C. Ban +2 more
wiley +1 more source