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

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

733
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
733

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

Complex Structural Examination of Protein-Lipid Interactions with Neutron Scattering Techniques.

Methods in molecular biology (Clifton, N.J.)·2026
Same author

Harnessing Membrane-Active Peptides for Selective Cancer Targeting: Phosphatidylserine Recognition by Tilapia Piscidin 4.

JACS Au·2026
Same author

Binding orientation of weakly associating membrane peripheral proteins via membrane paramagnetic relaxation enhancement NMR.

Communications chemistry·2026
Same author

Logarithmic Binding and Stretched-Exponential Kinetics in Peripheral Protein Interactions with Lipid Membrane Surfaces.

The journal of physical chemistry letters·2026
Same author

AI-driven antimicrobial peptide characterization unveils novel motifs for drug design.

Scientific reports·2025
Same author

Shear and Dilatational Rheology and Interfacial Structure of a Monoclonal Antibody Adsorbed at the Air-Liquid Interface.

Langmuir : the ACS journal of surfaces and colloids·2025
Same journal

Quantitative analysis of light-induced ion segregation in mixed-halide perovskites.

Journal of applied crystallography·2026
Same journal

Towards machine-learning-based on-the-fly analysis of neutron reflectometry.

Journal of applied crystallography·2026
Same journal

<i>mcstas_gisans</i>: combining ray tracing with the distorted-wave Born approximation using <i>McStas</i> and <i>BornAgain</i> for virtual GISANS experiments.

Journal of applied crystallography·2026
Same journal

Computational methods for automated center determination in electron diffraction patterns.

Journal of applied crystallography·2026
Same journal

Epitaxy of ultrathin Fe<sub>3</sub>O<sub>4</sub> films on SrTiO<sub>3</sub>(001): influence of growth parameters on the formation of coexisting (111)- and (001)-oriented phases.

Journal of applied crystallography·2026
Same journal

Spin excitations near the pressure-induced antiferromagnetic transition in SrCu<sub>2</sub>(BO<sub>3</sub>)<sub>2</sub>.

Journal of applied crystallography·2026
查看所有相关文章

相关实验视频

Updated: May 30, 2025

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
10:24

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

Published on: May 7, 2021

2.2K

自动反射:在中子反射计中进行主动学习,以快速获取数据.

David P Hoogerheide1, Frank Heinrich1,2

  • 1NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland, USA.

Journal of applied crystallography
|January 28, 2025
PubMed
概括
此摘要是机器生成的。

作为一个主动学习算法,AutoRefl通过智能选择最佳测量参数来显著加快中子反射计 (NR) 测量速度. 这提高了使用NR分析薄膜结构的效率.

关键词:
积极学习是积极学习.预测 预测 预测 预测有关信息信息信息信息信息信息.机器学习是机器学习.中子反射计中子反射计.

更多相关视频

High-Resolution Neutron Spectroscopy to Study Picosecond-Nanosecond Dynamics of Proteins and Hydration Water
08:48

High-Resolution Neutron Spectroscopy to Study Picosecond-Nanosecond Dynamics of Proteins and Hydration Water

Published on: April 28, 2022

1.7K
Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions
10:02

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions

Published on: May 27, 2021

3.9K

相关实验视频

Last Updated: May 30, 2025

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
10:24

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

Published on: May 7, 2021

2.2K
High-Resolution Neutron Spectroscopy to Study Picosecond-Nanosecond Dynamics of Proteins and Hydration Water
08:48

High-Resolution Neutron Spectroscopy to Study Picosecond-Nanosecond Dynamics of Proteins and Hydration Water

Published on: April 28, 2022

1.7K
Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions
10:02

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions

Published on: May 27, 2021

3.9K

科学领域:

  • 材料科学 材料科学 材料科学
  • 表面科学是一门学科.
  • 分析化学 分析化学

背景情况:

  • 中子反射计 (NR) 对于描述薄膜和接口结构至关重要.
  • 传统的NR测量是耗时的,并且受到仪器可用性的限制,需要提高效率.

研究的目的:

  • 引入基于模型的主动学习 (AL) 算法AutoRefl,旨在提高中子反射计测量效率.
  • 优化测量位置和持续时间的选择,以更快地获取数据.

主要方法:

  • 开发了AutoRefl,一种使用主动学习指导中子反射计测量的算法.
  • 自动反射根据从现有数据中获得的信息选择后续测量配置.
  • 集成预测用于持续测量优化,并使用信号噪声比来选择持续时间.

主要成果:

  • 在各种场景中,AutoRefl显示了中子反射测量测量速度的显著改善.
  • 通过使用单色和多色反射仪的数字双胞胎,对已建立的最佳实践进行了性能验证.
  • 该算法有效地最大化了特定模型参数的信息获取率.

结论:

  • 自动反射在加速中子反射测量实验方面取得了重大进展.
  • 这种主动学习方法提高了测量效率,使NR更容易获得和更有效率.
  • 算法的预测未来测量的能力支持实用,连续的实验工作流.