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Related Concept Videos

Chromatographic Resolution01:15

Chromatographic Resolution

In chromatography, a solute moves through a chromatographic column and tends to spread, forming a Gaussian-shaped band. The longer the solute spends in the column, the broader the band becomes. The broadening can lead to overlaps within the column, affecting separation effectiveness.
The effectiveness of separation can be evaluated by determining the level of separation between two neighboring peaks in a chromatogram, which represents the individual components of a sample.
In chromatography,...
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
Racemic Mixtures and the Resolution of Enantiomers02:30

Racemic Mixtures and the Resolution of Enantiomers

A racemic mixture, or racemate, is an equimolar mixture of enantiomers of a molecule that can be separated using their unique interaction with chiral molecules or media. Racemic mixtures are denoted by the (±)- prefix. This ‘optical rotation descriptor’ applies to the whole solution of a racemic mixture rather than a specific stereoisomer. Enantiomers typically have the same physical and chemical properties. Hence, they are not easily separable. However, enantiomers can exhibit different...
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.
Revisionist Views of Adolescent and Adult Cognition01:24

Revisionist Views of Adolescent and Adult Cognition

A revisionist approach to Jean Piaget's theory of cognitive development has brought new insights that challenge and reinterpret his established ideas. Piaget proposed that the formal operational stage, emerging in adolescence, represents the culmination of cognitive maturity. During this stage, individuals are said to develop abstract thinking, engage in systematic problem-solving, and show a form of egocentrism, believing others are as preoccupied with their behavior as they are themselves.
Woodward–Hoffmann Selection Rules and Microscopic Reversibility01:34

Woodward–Hoffmann Selection Rules and Microscopic Reversibility

Electrocyclic reactions, cycloadditions, and sigmatropic rearrangements are concerted pericyclic reactions that proceed via a cyclic transition state. These reactions are stereospecific and regioselective. The stereochemistry of the products depends on the symmetry characteristics of the interacting orbitals and the reaction conditions. Accordingly, pericyclic reactions are classified as either symmetry-allowed or symmetry-forbidden. Woodward and Hoffmann presented the selection criteria for...

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Related Experiment Video

Updated: Jun 16, 2026

Enabling High Grayscale Resolution Displays and Accurate Response Time Measurements on Conventional Computers
06:50

Enabling High Grayscale Resolution Displays and Accurate Response Time Measurements on Conventional Computers

Published on: February 29, 2012

The resolution revolution revisited.

Edward H Egelman1

  • 1Department of Biochemistry and Molecular Genetics, University of Virginia Medical School, Charlottesville, VA 22903, USA.

Iucrj
|June 15, 2026
PubMed
Summary
This summary is machine-generated.

Electron cryo-microscopy and electron cryo-tomography have advanced significantly. This review highlights key progress in these powerful imaging techniques.

Keywords:
cryo-EMcryo-ETelectron cryo-microscopyelectron cryo-tomographyresolution

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Last Updated: Jun 16, 2026

Enabling High Grayscale Resolution Displays and Accurate Response Time Measurements on Conventional Computers
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Area of Science:

  • Structural Biology
  • Biophysics
  • Microscopy

Background:

  • Electron cryo-microscopy (cryo-EM) and electron cryo-tomography (cryo-ET) are powerful techniques for visualizing biological macromolecules and cellular structures at high resolution.
  • Recent technological advancements have dramatically improved image quality, speed, and data processing capabilities in cryo-EM and cryo-ET.

Purpose of the Study:

  • To provide an overview of the remarkable progress in electron cryo-microscopy and electron cryo-tomography.
  • To highlight key breakthroughs and advancements in the field.

Main Methods:

  • Review of recent literature and technological developments in electron cryo-microscopy.
  • Synthesis of progress in electron cryo-tomography techniques and applications.

Main Results:

  • Significant improvements in resolution, enabling near-atomic level visualization of biological samples.
  • Expanded applications of cryo-EM and cryo-ET in understanding complex cellular processes and structures.

Conclusions:

  • Electron cryo-microscopy and electron cryo-tomography are rapidly evolving fields with transformative potential in biological sciences.
  • Continued innovation promises further breakthroughs in structural and cellular biology.