Immersion Testing
Immersion Testing - Related Videos
13:32
Cryopreservation of Zebrafish Spermatogonia by Whole Testes Needle Immersed Ultra-Rapid Cooling
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Cited by 18 •
2018
The main purpose of this study was to adapt the needle immersed vitrification (NIV) procedure to cryopreserve whole zebrafish testes. Additionally, the repeatability of the method in five different zebrafish strains was tested.
11:30
Buoyancy and Drag on Immersed Bodies
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2023
Source: Alexander S Rattner and Sanjay Adhikari; Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA Objects, vehicles, and organisms immersed in fluid mediums experience forces from the surrounding fluid in the form of buoyancy- a vertical upward force due to fluid weight, drag- a resistive force opposite the direction of motion, and lift- a force perpendicular to the direction of motion. Prediction and characterization of these forces is...
10:38
Human Fear Conditioning Conducted in Full Immersion 3-Dimensional Virtual Reality
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Cited by 25 •
2010
Classical fear conditioning paradigm was adapted for human participants in a fully immersive virtual reality setting. Using a discrimination paradigm, conditioned fear, cue and context memory retention, and extinction was measured with skin conductance response to dynamic virtual snakes and spiders (the conditioned stimuli) in two distinct virtual contexts.
09:41
Imaging Centrosomes in Fly Testes
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Cited by 10 •
2013
Imaging of centrosomal proteins during Drosophila spermatogenesis is a powerful method to identify new proteins critical for centrosome biology as well as to elucidate the particular function of known players in this process.
07:47
Anxiety Testing
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2023
Anxiety is a commonly observed behavioral disorder that stems from fear. It is described as increased restlessness, or unpleasant feelings of fear over anticipated events. Experimenters often use rodent models to better understand anxiety disorders in humans. They use different paradigms, like exposing rodents to bright spaces or loud sounds, which are known to induce fear. These tests combined with other interventions such as surgery or drug-administration may assist researchers in pinpointing...
FAQs
Solution composition, temperature, and exposure time determine the environment experienced by the sample and can alter the measured response. Saline, buffer, and simulated body fluid provide different chemical settings, while longer exposure or controlled temperature changes may reveal progressive absorption, swelling, corrosion, dissolution, or degradation. Keeping these conditions specified makes results interpretable.
The liquid establishes the chemical context in which the material or device changes. Saline, buffer, and simulated body fluid can support different evaluations of water absorption, swelling, corrosion, dissolution, or degradation. Selecting and documenting the solution is therefore important when assessing whether a biomaterial remains suitable for a wet biological environment.
Measurements can show physical, mechanical, and chemical changes rather than relying on appearance alone. Mass changes help characterize absorption or loss, appearance can reveal visible alteration, mechanical properties indicate performance changes, and chemical composition measurements identify compositional shifts. Examining these response categories together provides a broader assessment of material behavior during liquid exposure.
A basic workflow places the material or device in a specified liquid, maintains the selected temperature and exposure period, and uses a defined solution composition. After exposure, researchers examine changes in mass, appearance, mechanical properties, or chemical composition. This sequence links controlled environmental conditions with measurable changes in the sample.
Researchers use this approach when a material or device is expected to function in a wet biological environment and its stability must be characterized. It is relevant for implants, tissue-engineering scaffolds, drug-delivery systems, and other devices. The resulting measurements support design decisions and performance assessment by showing how liquid exposure affects the sample.
For implants and tissue-engineering scaffolds, immersion results indicate whether exposure to a selected fluid is associated with changes in mass, appearance, mechanical properties, or chemical composition. Those findings help characterize swelling, corrosion, dissolution, or degradation. In turn, researchers can use the measured behavior to assess performance and guide material or device design for wet conditions.