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相关概念视频

Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
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π Electron Effects on Chemical Shift: Overview01:27

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An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
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Transmission Electron Microscopy01:15

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In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400...
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High-resolution Single Particle Analysis from Electron Cryo-microscopy Images Using SPHIRE
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电相:用于快速电子影像的统一和可扩展的框架.

Colin Gilgenbach1, Menglin Zhu1, James M LeBeau1

  • 1Department of Materials Science & Engineering, Massachusetts Institute of Technology, Cambridge, MA USA.

npj computational materials
|February 16, 2026
PubMed
概括

Phaser是用于图形图像的新Python包,为各种算法提供了统一的界面. 这个开源软件增强了实验重建,并加速了材料科学应用.

科学领域:

  • 材料科学 材料科学 材料科学
  • 计算成像技术的成像
  • 物理 物理学 物理

背景情况:

  • 隐形摄影是一种强大的无镜头成像技术.
  • 现有的算法可以是复杂的实施和计算密集型.
  • 需要一个统一和灵活的软件包来推进图形学研究.

研究的目的:

  • 介绍Phaser,这是一个开源的Python包用于图形重建.
  • 为传统和基于自我区分的算法提供统一的接口.
  • 提高实验图形图形重建的实用性和稳定性.

主要方法:

  • 开发了一个统一的接口,用于各种图形算法.
  • 实现了诸如混合状态探头,探头位置校正和多切片图解等功能.
  • 支持多个计算后端和一个声明式重建格式.

主要成果:

  • 在各种实验数据集中展示了成功的重建.
  • 分析了规范化对融合和重建质量的影响.
  • 对于单切片和多切片方法的基准重建速度.

结论:

关键词:
材料科学是一种材料科学.数学和计算的数学和计算.光学和光子学 在光学和光子学.

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  • Phaser为图形数据分析提供了一个灵活而强大的平台.
  • 该软件有助于更快地应用和开发图形学方法.
  • 步器准备加速材料科学成像方面的进步.