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

Stability of Conjugated Dienes01:28

Stability of Conjugated Dienes

3.9K
Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
3.9K
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model01:09

Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model

555
Various dissolution theories provide insight into the factors that influence the dissolution rate. Danckwerts' Model suggests that turbulence, rather than a stagnant layer, characterizes the dissolution medium at the solid-liquid interface. In this model, the agitated solvent contains macroscopic packets that move to the interface via eddy currents, facilitating the absorption and delivery of the drug to the bulk solution. The regular replenishment of solvent packets maintains the...
555
Microtubule Instability02:17

Microtubule Instability

5.5K
Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated...
5.5K
Yield Criteria for Ductile Materials under Plane Stress01:25

Yield Criteria for Ductile Materials under Plane Stress

286
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
286
Stability of structures01:14

Stability of structures

315
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
315
Saint-Venant's Principle01:18

Saint-Venant's Principle

998
The principle of Saint-Venant postulates that the stress distribution within a structural member does not rely on the precise method of load application except in the vicinity of the load application points. Consider a scenario where loads are centrally applied on two plates. In this case, the plates move toward each other without any rotation. This movement causes the member to contract in length and expand in width and thickness. Uniform deformation across all elements and maintaining...
998

You might also read

Related Articles

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

Sort by
Same author

Influence of Stipa spp. on near-surface aeolian process: A wind tunnel simulation.

Journal of environmental management·2026
Same author

Topography influences megadune distribution and morphology.

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

Comprehensive effects of different restoration modes on the ecological environment of abandoned land in typical Qinling mining areas: a systematic study based on PTEs pollution-vegetation-soil conditions.

Environmental pollution (Barking, Essex : 1987)·2026
Same author

Strategies reimagined: SDG-driven solutions for combating global desertification.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Comprehensive grain size database of sediments of different types of dunes in Gurbantunggut Desert.

Scientific data·2025
Same author

Modeling the dynamics of aeolian meter-scale bedforms induced by bed heterogeneities.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same journal

Chemotactic self-organization captures the dynamics of mammalian hair follicle patterning.

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

Tomographic imaging of superconducting order using particle-hole interference.

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

Inhibitory potential of autologous neutralizing antibodies sets quantitative limits on the rebound-competent HIV-1 reservoir.

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

Inferring epidemiological parameters under an infectious phylogeography model with visitor dynamics.

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

Analytical modeling for suction cup designs for skin-interfaced wearable devices.

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

Improving cell-free metabolism through direct integration of artificial respiratory chains.

Proceedings of the National Academy of Sciences of the United States of America·2026
See all related articles

Related Experiment Video

Updated: Nov 8, 2025

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.4K

Direct validation of dune instability theory.

Ping Lü1, Clément Narteau2, Zhibao Dong3

  • 1School of Geography and Tourism, Shaanxi Normal University, Xi'an, Shaanxi 710119, China; lvping@snnu.edu.cn narteau@ipgp.fr.

Proceedings of the National Academy of Sciences of the United States of America
|April 22, 2021
PubMed
Summary
This summary is machine-generated.

Scientists studied dune formation in the Gobi desert, revealing a key mechanism for dune size selection. This research helps understand wind-driven sand patterns on Earth and other planets.

Keywords:
duneinstabilitysediment transportsize selectionsurface winds

More Related Videos

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

8.9K
Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.8K

Related Experiment Videos

Last Updated: Nov 8, 2025

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.4K
Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

8.9K
Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.8K

Area of Science:

  • Geomorphology
  • Planetary Science
  • Fluid Dynamics

Background:

  • Modern dune fields offer insights into terrestrial and planetary environments.
  • Understanding small-scale dynamics is crucial for analyzing large-scale dune patterns.
  • Eolian geomorphology is key to interpreting surface processes.

Purpose of the Study:

  • To quantify incipient dune development under natural wind action.
  • To analyze dune pattern formation using spectral analysis of bedform dynamics.
  • To understand the mechanism of dune size selection.

Main Methods:

  • A landscape-scale experiment was conducted at the Gobi desert edge.
  • High-resolution topographic data spanning 42 months were analyzed.
  • Spectral analysis was used to examine bedform dynamics and dune growth rates.

Main Results:

  • Two distinct phases of dune growth were identified, from flat beds to periodic patterns.
  • A maximum growth rate was observed, explaining the selection of a 15-m wavelength pattern.
  • Experimental results showed remarkable agreement with linear dune instability theory.

Conclusions:

  • The linear regime of dune growth is consistently expressed in low-amplitude topography.
  • The study validates theoretical models for early eolian dune development.
  • Findings enhance the understanding of atmospheric and surface processes on Earth and other planets.