Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Single and Two-phase Flow in a Packed Bed Reactor10:39

Single and Two-phase Flow in a Packed Bed Reactor

19.9K
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA
The goal of this experiment is to determine the magnitude of maldistribution in typical packed bed reactors in both single phase and two-phase (gas-liquid) flow and evaluate the effects of this maldistribution on pressure drop. The concepts of residence time distribution and dispersion are introduced through the use of tracers, and these concepts are related to physical...
19.9K
Protein Complex Assembly02:41

Protein Complex Assembly

16.6K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
16.6K
Protein Complex Assembly02:41

Protein Complex Assembly

2.5K
2.5K
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell11:36

Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell

23.2K
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC...
23.2K
Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure06:52

Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure

6.8K
A protocol has been developed to measure gases, odors, and nutrient composition in lab-scaled bedded manure packs, which can be used to study ways to improve air quality in commercial cattle facilities using deep-bedded manure...
6.8K
Spindle Assembly02:50

Spindle Assembly

4.2K
Spindle assembly occurs through three, often coexisting, pathways – the centrosome-mediated pathway, the chromatin-mediated pathway, and the microtubule-mediated pathway – collectively contributing to form a robust spindle apparatus.
In most cells, centrosomes are the primary microtubule nucleation centers. In the centrosome-mediated pathway, the G2-prophase transition triggers centrosome maturation and increased microtubule nucleation. Progressive nucleation results in a...
4.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Nonreciprocal interactions and high-dimensional chaos: Comparing dynamics and statistics of equilibria in a solvable class of models.

Physical review. E·2026
Same author

Demonstrating real advantage of machine learning-enhanced Monte Carlo for combinatorial optimization.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Rare trajectories in a prototypical mean-field disordered model: Insights into landscape and instantons.

Physical review. E·2026
Same author

Functional bottlenecks can emerge from non-epistatic underlying traits.

PLoS computational biology·2026
Same author

Author Correction: Exploring the space of self-reproducing ribozymes using generative models.

Nature communications·2025
Same author

Banding and polarization in driven multistable materials.

The Journal of chemical physics·2025

Related Experiment Video

Updated: Jan 20, 2026

Single and Two-phase Flow in a Packed Bed Reactor
10:39

Single and Two-phase Flow in a Packed Bed Reactor

Published on: April 30, 2023

19.9K

Can a Large Packing be Assembled from Smaller Ones?

Daniel Hexner1,2, Pierfrancesco Urbani3, Francesco Zamponi4

  • 1The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637, USA.

Physical Review Letters
|September 7, 2019
PubMed
Summary

Soft sphere packings exhibit distinct structural fluctuations between subsystems and whole systems. These differences diminish in larger systems, suggesting a critical dimension for jamming transitions.

More Related Videos

Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
11:36

Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell

Published on: November 5, 2009

23.2K
Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure
06:52

Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure

Published on: July 19, 2018

6.8K

Related Experiment Videos

Last Updated: Jan 20, 2026

Single and Two-phase Flow in a Packed Bed Reactor
10:39

Single and Two-phase Flow in a Packed Bed Reactor

Published on: April 30, 2023

19.9K
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
11:36

Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell

Published on: November 5, 2009

23.2K
Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure
06:52

Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure

Published on: July 19, 2018

6.8K

Area of Science:

  • Physics
  • Materials Science
  • Statistical Mechanics

Background:

  • Jamming transition in soft matter systems is a critical phenomenon.
  • Understanding the thermodynamic limit is crucial for characterizing jamming.
  • System size effects can obscure true critical behavior.

Purpose of the Study:

  • To compare the structural properties of finite subsystems versus whole packings.
  • To investigate the system size dependence of jamming and unjamming transitions.
  • To determine the upper critical dimension for jamming in soft sphere packings.

Main Methods:

  • Simulating zero-temperature soft sphere packings at varying packing fractions.
  • Analyzing contact statistics to measure structural differences.
  • Comparing finite subsystems with periodic boundary conditions to whole systems.
  • Extending analysis to 2D, 3D, 4D, and mean-field models.

Main Results:

  • Whole packings show smaller fluctuations than subsystems.
  • Convergence of subsystem and whole packing properties occurs at large system sizes.
  • System size dependence is similar across 2D, 3D, 4D, and mean-field models.
  • Mean-field critical exponents align with 3D and 4D packings, indicating they are above the upper critical dimension.
  • Convergence to the thermodynamic limit is governed by two distinct length scales.

Conclusions:

  • Soft sphere packings are above their upper critical dimension.
  • Finite-size scaling analysis reveals two characteristic length scales.
  • Subsystem simulations may not fully capture bulk properties of jammed systems.