Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Precipitation Processes

Precipitation Processes

The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...

Precipitation Gravimetry

Precipitation Gravimetry

Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...

Types of Coprecipitation

Types of Coprecipitation

Coprecipitation is the contamination of a precipitate by otherwise soluble species and occurs via different processes. In colloidal precipitates, coprecipitation occurs via surface adsorption. For instance, barium sulfate has a primary layer of adsorbed barium ions and a secondary layer of nitrate counterions. This results in contamination of the precipitate by barium nitrate.
Sometimes, ions in a crystal lattice can undergo isomorphous replacement by inclusions of similar charge and size. For...

Boundary Layer Characteristics

Boundary Layer Characteristics

When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...

Precipitation of Ions

Precipitation of Ions

Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:

You might also read

Related Articles

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

Sort by

Same author

γ-Aminobutyric acid and glutamate dysregulation in the dorsolateral prefrontal cortex of adolescents with first-episode major depressive disorder and the modulatory effects of repetitive transcranial magnetic stimulation.

Psychoradiology·2026

Same author

Avoidance of capture by motion onset.

Attention, perception & psychophysics·2026

Same author

Multimodal MRI radiomics-clinical fusion model predicts intravenous glucocorticoid response in thyroid eye disease.

Frontiers in endocrinology·2026

Same author

MultiModal craniocerebral diagnose based on 3D CT and image reports.

Scientific reports·2025

Same author

Aberrant cortical morphology and brain structure similarity networks in first-episode, treatment-naive adolescents with major depressive disorder.

Journal of affective disorders·2025

Same author

Metachronous early gastric cancer successfully treated twice with endoscopic submucosal dissection: A case report.

Medicine·2025

Search research articles

Related Experiment Video

Updated: Jul 21, 2025

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

A Joint De-Rain and De-Mist Network Based on the Atmospheric Scattering Model.

Linyun Gu¹, Huahu Xu², Xiaojin Ma³

¹School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.

Journal of Imaging

|July 28, 2023

Summary

This study introduces a new method to remove rain streaks and mist halos from images, significantly improving clarity. The Joint De-rain and De-mist Network (JDDN) enhances image quality in adverse weather conditions.

Keywords:

atmospheric scattering model images de-rain multi-scale convolution

More Related Videos

Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data

Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data

Published on: December 12, 2013

A Protocol for Conducting Rainfall Simulation to Study Soil Runoff

A Protocol for Conducting Rainfall Simulation to Study Soil Runoff

Published on: April 3, 2014

Related Experiment Videos

Last Updated: Jul 21, 2025

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data

Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data

Published on: December 12, 2013

A Protocol for Conducting Rainfall Simulation to Study Soil Runoff

A Protocol for Conducting Rainfall Simulation to Study Soil Runoff

Published on: April 3, 2014

Area of Science:

Computer Vision
Image Processing
Artificial Intelligence

Background:

Rain and mist cause visual distortions like streaks and halos, degrading image quality.
Existing methods struggle to effectively remove both rain and mist simultaneously.

Purpose of the Study:

To develop a novel approach for simultaneous de-raining and de-misting of images.
To enhance the clarity and quality of images captured in rainy and misty conditions.

Main Methods:

A rain and mist model based on atmospheric scattering for initial image reconstruction.
Deep Memory Block (DMB) for selective extraction of rain and mist layer transfer spectra.
Multi-scale Convolution Block (MCB) for feature extraction and model enhancement.

Main Results:

The proposed Joint De-rain and De-mist Network (JDDN) effectively removes both streaks and halos.
JDDN outperforms state-of-the-art deep learning methods on synthetic and real-world datasets.
An average improvement of 0.29 dB was achieved on heavy-rainy-image datasets.

Conclusions:

The JDDN model offers a robust and accurate solution for joint de-raining and de-misting.
This approach significantly improves image quality in adverse weather.
The method demonstrates superior performance compared to existing techniques.