Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Classifying Matter by Composition03:35

Classifying Matter by Composition

90.2K
Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures. 
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated. 
A mixture is composed of two or...
90.2K
Masking and Demasking Agents01:19

Masking and Demasking Agents

3.6K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
3.6K
Administering Oxygen by Mask01:30

Administering Oxygen by Mask

2.3K
Administering Oxygen by Mask
Administering oxygen by mask is a common nursing intervention that provides supplemental oxygen to patients with respiratory distress or chronic lung conditions. This procedure involves delivering oxygen at a specified rate through a face mask connected to an oxygen source.
Equipment
The equipment necessary for this procedure includes:
2.3K
Oxygen Delivering System I: Nasal Cannula and Face Mask01:26

Oxygen Delivering System I: Nasal Cannula and Face Mask

1.6K
The human body requires oxygen to function, and when the natural process of respiration is hindered, external devices, including the following, are needed to help deliver this vital gas.
Nasal Cannula
A nasal cannula is a lightweight tube split at one end into two prongs and placed in the nostrils. It is typically used to deliver low to medium levels of oxygen.
Suggested flow rate: The suggested flow rate for a nasal cannula typically ranges between 1 and 6 L/min.
Oxygen percentage setting:...
1.6K
Composite Bodies00:55

Composite Bodies

1.4K
A composite body is a body made up of multiple parts, connected to form a larger, unified object. Each part has its own weight and center of gravity, which must be considered to determine the center of gravity of the composite body. In cases where the density or specific weight is constant, the center of gravity coincides with the centroid.
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...
1.4K
Composition of Blood01:22

Composition of Blood

12.1K
The blood in our bodies comprises three major components: blood plasma, formed elements, and the extracellular matrix. Blood plasma is a yellowish fluid that constitutes 55% of the total blood volume. It is primarily made up of water and essential substances such as electrolytes and proteins. Blood plasma serves as a medium for transporting blood cells and also contains nutrients, enzymes, hormones, antibodies, and gases.
Formed elements constitute the remaining 45% of the blood volume. These...
12.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Quantitative evaluation of crack based on the sparse decomposition of array Lamb wave propagation.

Ultrasonics·2023
Same author

Genetic manipulation of a transcription-regulating sequence of porcine reproductive and respiratory syndrome virus reveals key nucleotides determining its activity.

Archives of virology·2014
Same author

Preparation and characterization of starch crosslinked with sodium trimetaphosphate and hydrolyzed by enzymes.

Carbohydrate polymers·2014
Same author

Two monoclonal antibodies recognising aa 634-668 and aa 1026-1055 of NogoA enhance axon extension and branching in cultured neurons.

PloS one·2014
Same author

Energetics of defects on graphene through fluorination.

ChemSusChem·2014
Same author

Incidence of microscopically positive proximal margins in adenocarcinoma of the gastroesophageal junction.

PloS one·2014

相关实验视频

Updated: Jan 29, 2026

Spatial and Temporal Control of T Cell Activation Using a Photoactivatable Agonist
07:48

Spatial and Temporal Control of T Cell Activation Using a Photoactivatable Agonist

Published on: April 25, 2018

6.6K

适应性采样,用于在复合板材中高效的Lamb波场重建,使用时空掩饰自编码器.

Dingcheng Ji1, Wenhao Li2, Fei Gao1

  • 1School of Reliability and Systems Engineering, Beihang University, Xueyuan Road No. 37, Haidian District, Beijing, China.

Ultrasonics
|January 27, 2026
PubMed
概括

这项研究引入了一种深度学习方法,可以从稀疏的测量中重建全超声波Lamb波场数据,从而能够准确地评估碳纤维复合材料的损害. 这种方法显著减少了对非破坏性测试应用程序的数据采集需求.

关键词:
适应性空间抽样采集复合层材料是复合层材料的组成部分.深度学习是一种深度学习.羊羔的波场重建的波场重建.

更多相关视频

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process
09:54

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

3.1K
Spatial Temporal Analysis of Fieldwise Flow in Microvasculature
09:39

Spatial Temporal Analysis of Fieldwise Flow in Microvasculature

Published on: November 18, 2019

6.3K

相关实验视频

Last Updated: Jan 29, 2026

Spatial and Temporal Control of T Cell Activation Using a Photoactivatable Agonist
07:48

Spatial and Temporal Control of T Cell Activation Using a Photoactivatable Agonist

Published on: April 25, 2018

6.6K
Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process
09:54

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

3.1K
Spatial Temporal Analysis of Fieldwise Flow in Microvasculature
09:39

Spatial Temporal Analysis of Fieldwise Flow in Microvasculature

Published on: November 18, 2019

6.3K

科学领域:

  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程
  • 人工智能的人工智能

背景情况:

  • 碳纤维增强塑料 (CFRP) 需要对工程应用进行准确的损害评估.
  • 超声波羔羊波测试 (ULWT) 和扫描激光多普勒振动仪 (SLDV) 是关键的非破坏性测试 (NDT) 方法.
  • 使用 SLDV 快速且可靠地获取完整波场数据仍然是一个重大挑战.

研究的目的:

  • 开发一种深度学习方法,从高度不足的数据中重建完整的波场数据.
  • 引入一种适应性采样策略,以优化波场数据采集.
  • 提高CFRP结构损害量化的准确性和效率.

主要方法:

  • 空间时空掩盖自编码器 (STMAE) 用于从稀疏数据中重建波场.
  • 贝叶斯优化用于自适应的稀疏空间采样模式生成.
  • 对单次和多次损害场景进行比较实验,采样比例各不相同.

主要成果:

  • 实现了显著的重建性能,采样比率低至5%.
  • 适应性采样策略 (AdaSTMAE) 在损坏区域周围的重建误差减少了2-16% (单次损坏) 和0.7-5% (多次损坏).
  • 与原来的蒙面自动编码器 (MAE) 相比,重建错误减少了87-88%.
  • 在厚度可变的复合刀片上验证了强大的概括能力.

结论:

  • 拟议的深度学习方法有效地从稀疏的测量中重建完整的波场数据.
  • 适应性采样优化了数据采集,提高了损坏定位的准确性.
  • 该技术显示了对CFRP结构的真实世界NDT的巨大潜力.