Related Experiment Video
Updated: Aug 13, 2026

Mechanical Stimulation of Stem Cells Using Cyclic Uniaxial Strain
Published on: July 29, 2007
[Study on assistant cleaning of ultrasound for the ultrafiltration membrane]
1Center for Environmental Engineering, Chinese Research Academy of Environmental Sciences, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
Abstract:
The effects of ultrasounds with different frequency on membrane performance were investigated in this paper. The experimental results show that there were nearly no effects of 20 W ultrasound on membrane retention coefficient, but it decreased seriously when the ultrasound power was above 30 W. On the basis of these results, low frequency ultrasound (20 W) was introduced to assist the chemical cleaning in the ultrafiltration process of wastewater from bank note printing works. The cleaning time could be shortened from 20-30 min to 5 min by the ultra-liberation and ultra-blend effects of ultrasound, therefore, the cleaning efficiency was highly improved. However, the fouling substances could not be cleaned entirely in the simple physical cleaning process by SEM analysis.
More Related Videos
Related Concept Videos
Detergent Purification of Membrane Proteins
Dialysis
Ultrasound I: Abdominal Ultrasonography
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
Imaging Studies II: Ultrasonography

