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

Theories of Dissolution: Diffusion Layer Model01:15

Theories of Dissolution: Diffusion Layer Model

857
Dissolution, the process by which drug particles dissolve in a solvent, is explained by the diffusion layer model, a theoretical framework that simulates the absorption of oral drugs and allows us to analyze experimental data.
This process starts with a thin layer, saturated with the drug, forming at the interface between the solid and liquid. The solute then diffuses from this layer into the main solution. The Noyes-Whitney equation suggests that the rate of dissolution relies on the diffusion...
857
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model01:09

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

384
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...
384
Steady, Laminar Flow in Circular Tubes01:23

Steady, Laminar Flow in Circular Tubes

301
Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is...
301
Factors Affecting Dissolution: Particle Size and Effective Surface Area01:23

Factors Affecting Dissolution: Particle Size and Effective Surface Area

932
Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
932
Couette Flow01:22

Couette Flow

377
Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
377
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

274
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
274

You might also read

Related Articles

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

Sort by
Same author

An uncommon endoscopic finding: esophageal intramural pseudodiverticulosis.

Gastroenterologia y hepatologia·2026
Same author

Differential Effects of Soil Moisture and Air Temperature on Vegetation Dynamics in Northwest China's Warming and Wetting Region: An LSTM Modeling Approach.

Plants (Basel, Switzerland)·2026
Same author

Stochastic poromechanical analysis forecasts a notable exceedance probability for the 2017 Pohang, South Korea, <i>M</i> <sub>w</sub> 5.5 earthquake.

Communications earth & environment·2026
Same author

Enhancing the removal of contaminants of emerging concern from wastewater effluents using recharge-dependent soil aquifer treatment with reactive barriers.

Journal of environmental management·2026
Same author

Microplastics in Mediterranean coastal wastewater treatment plants: Seasonal trends driven by tourism and weather conditions.

Journal of environmental management·2025
Same author

Combining seepage meters and amphibious electric resistivity tomography to investigate pathways of submarine groundwater discharge.

The Science of the total environment·2025

Related Experiment Video

Updated: Aug 16, 2025

Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography
10:18

Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography

Published on: February 21, 2017

8.6K

Visualizing and evaluating wormholes formation dynamics under flow competition in an intermediate-scale dissolution

Michela Trabucchi1, Daniel Fernàndez Garcia1, Jesús Carrera2

  • 1Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya (UPC), Jordi Girona 1-3, 08034 Barcelona, Spain.

The Science of the Total Environment
|December 19, 2022
PubMed
Summary

This study visualizes and quantifies multiple wormhole dynamics in saline karst aquifers. Results reveal wormhole competition for flow and self-organization, impacting aquifer behavior.

Keywords:
Dissolution patternsEvaporitic aquiferFlow channelsSalar de AtacamaTransport behaviourWormholes dynamics

More Related Videos

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
09:42

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes

Published on: January 16, 2016

9.1K
Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR
10:54

Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR

Published on: February 23, 2016

10.7K

Related Experiment Videos

Last Updated: Aug 16, 2025

Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography
10:18

Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography

Published on: February 21, 2017

8.6K
Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
09:42

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes

Published on: January 16, 2016

9.1K
Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR
10:54

Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR

Published on: February 23, 2016

10.7K

Area of Science:

  • Geosciences
  • Hydrogeology
  • Environmental Science

Background:

  • Wormholes, highly conductive channels in soluble rocks, are crucial for saline karst aquifer sustainability.
  • Understanding wormhole dynamics is vital for environmental and industrial applications, yet experimental data on multiple wormholes is scarce.

Purpose of the Study:

  • To develop an experimental setup for visualizing and quantifying the dynamics of multiple wormholes.
  • To investigate the interplay between hydrodynamic and geochemical conditions in wormhole evolution.
  • To provide quantitative insights into wormhole competition and self-organization.

Main Methods:

  • Conducted a dissolution experiment in a 2D synthetic evaporitic aquifer.
  • Utilized simultaneous fluorescent tracer tests before and during wormhole growth.
  • Employed sequential photography for visualization and image analysis, alongside pressure and mass change measurements.

Main Results:

  • Wormholes preferentially form in high-flux areas and exhibit competition for water.
  • First quantitative evidence of an amplifying factor driving self-organization in wormhole growth was observed.
  • Observed slower competition dynamics than predicted by theory, potentially due to non-linear kinetics and particle dragging.

Conclusions:

  • Experimental findings offer a novel understanding of multi-wormhole dynamics in saline karst systems.
  • The study highlights the importance of experimental observation for refining theoretical models of wormhole evolution.
  • Results indicate significant changes in aquifer flow and transport behavior due to wormhole development.