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

Social Traps01:41

Social Traps

26.9K
Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned...
26.9K
Physiological Pharmacokinetic Models: Blood Flow-Limited Versus Diffusion-Limited Models00:57

Physiological Pharmacokinetic Models: Blood Flow-Limited Versus Diffusion-Limited Models

353
Physiological pharmacokinetic models, often called flow-limited or perfusion models, typically assume a swift drug distribution between tissue and venous blood, creating a rapid drug equilibrium. This premise is based on the idea that drug diffusion is extremely fast, and the cell membrane presents no barrier to drug permeation. In this scenario, where no drug binding occurs, the drug concentration in the tissue equals that of the venous blood leaving the tissue. This greatly simplifies the...
353
Gene Flow02:39

Gene Flow

38.0K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
38.0K
Flow Cytometry01:23

Flow Cytometry

16.4K
The development of flow cytometry techniques began in 1934 with initial attempts by Andrew Moldavan, a bacteriologist who counted the cells in a flowing capillary system. Moldavan pumped cells through a capillary tube focused under a microscope for visualization. The invention of photometry allowed the measurement of differentially-stained cells, and Louis Kamentsky developed the first multiparameter flow cytometer in 1965 to identify and count the cancer cells in cervical tissue specimens.
In...
16.4K
Flow Sheet01:17

Flow Sheet

2.9K
Flowsheets are valuable tools in nursing documentation. They enable healthcare professionals to efficiently record and monitor various patient assessments and measurements in a consolidated format.
Here's a closer look at the examples of flowsheets commonly used by nurses:
Graphic Sheet Documentation:
2.9K
Flow Table Test01:12

Flow Table Test

738
The flow table test is an established method used to assess the workability of concrete, particularly useful for evaluating highly flowable concrete mixes. This test employs an apparatus that consists of a wooden board topped with a steel plate, collectively weighing 35 pounds. The board is connected to a base via a hinge and measures 27.6 inches on each side.
Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
738

You might also read

Related Articles

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

Sort by
Same author

Collective dynamics of macroscopic photoactive matter under alternating excitation patterns.

Physical review. E·2026
Same author

Individual locomotor bias drives counterclockwise motion in pedestrian crowds.

Nature communications·2026
Same author

Noise-induced instability of uniform flow in single-file traffic systems.

PNAS nexus·2026
Same author

Rapid and selective characterization of antibody-drug conjugates in complex sample matrices by native affinity liquid chromatography-mass spectrometry.

mAbs·2026
Same author

Differentiating solar lentigines from post-inflammatory hyperpigmentation with hyperspectral imaging: A pilot study.

International journal of cosmetic science·2026
Same author

Cluster Dynamics in Macroscopic Photoactive Particles.

Physical review letters·2025

Related Experiment Video

Updated: Feb 10, 2026

Neutrophil Extracellular Traps: How to Generate and Visualize Them
14:17

Neutrophil Extracellular Traps: How to Generate and Visualize Them

Published on: February 24, 2010

88.2K

Trap Model for Clogging and Unclogging in Granular Hopper Flows.

Alexandre Nicolas1, Ángel Garcimartín2, Iker Zuriguel2

  • 1LPTMS, CNRS, Université Paris-Sud, Université Paris-Saclay, 91405 Orsay, France.

Physical Review Letters
|May 26, 2018
PubMed
Summary

Granular flow clogging can be modeled using thermal fluctuations and energy traps. This approach explains broad distributions of clog lifetimes and suggests gentle vibrations may not ensure continuous flow indefinitely.

More Related Videos

Fragmenting Bulk Hydrogels and Processing into Granular Hydrogels for Biomedical Applications
10:18

Fragmenting Bulk Hydrogels and Processing into Granular Hydrogels for Biomedical Applications

Published on: May 17, 2022

6.8K
Extraction of Structural Extracellular Polymeric Substances from Aerobic Granular Sludge
06:10

Extraction of Structural Extracellular Polymeric Substances from Aerobic Granular Sludge

Published on: September 26, 2016

23.8K

Related Experiment Videos

Last Updated: Feb 10, 2026

Neutrophil Extracellular Traps: How to Generate and Visualize Them
14:17

Neutrophil Extracellular Traps: How to Generate and Visualize Them

Published on: February 24, 2010

88.2K
Fragmenting Bulk Hydrogels and Processing into Granular Hydrogels for Biomedical Applications
10:18

Fragmenting Bulk Hydrogels and Processing into Granular Hydrogels for Biomedical Applications

Published on: May 17, 2022

6.8K
Extraction of Structural Extracellular Polymeric Substances from Aerobic Granular Sludge
06:10

Extraction of Structural Extracellular Polymeric Substances from Aerobic Granular Sludge

Published on: September 26, 2016

23.8K

Area of Science:

  • Physics
  • Complex Systems
  • Materials Science

Background:

  • Granular materials can clog narrow outlets by forming arches.
  • Vibrations can break these clogs, but clog lifetimes show broad distributions.
  • Understanding clog dynamics is crucial for controlling granular flow.

Purpose of the Study:

  • To propose a simple model for arch breaking in granular flows.
  • To explain the broad distribution of clog lifetimes under vibration.
  • To investigate the physical underpinnings of clogging and unclogging.

Main Methods:

  • Modeling arch breaking as escape from an energy trap using a Langevin equation.
  • Equating vibrations to thermal fluctuations.
  • Inferring trap depth distribution from experiments in 2D hoppers.

Main Results:

  • The model successfully captures the heavy tails observed in the distribution of clog lifetimes (p(τ)).
  • Heavy tails flatten systematically at large lifetimes, questioning the efficacy of gentle vibrations for perpetual flow.
  • The model also replicates results on gravity's effect on static silo clogging.

Conclusions:

  • A unified framework based on energy trap dynamics explains both clogging and unclogging phenomena.
  • The model provides insights into the statistical behavior of granular flow under vibration and gravity.
  • Gentle vibrations may not guarantee indefinite granular outflow due to systematic flattening of clog lifetime distributions.