Shape Retention
Shape Retention - Related Videos
02:42
Determination of the Calcium Retention Capacity of Isolated Mitochondria
0 Views •
2025
This video demonstrates the procedure to assess mitochondrial calcium retention capacity by monitoring real-time changes in fluorescence as mitochondria uptake calcium. This assay is useful for studying mitochondrial function and calcium-related processes, including apoptosis and neurodegenerative diseases.
03:37
Molecular Shape and Polarity
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2020
Dipole Moment of a Molecule Polar covalent bonds connect two atoms with differing electronegativities, leaving one atom with a partial positive charge (δ+) and the other atom with a partial negative charge (δ–), as the electrons are pulled toward the more electronegative atom. This separation of charge gives rise to a bond dipole moment. The magnitude of a bond dipole moment is represented by the Greek letter mu (µ) and is given by the formula shown here, where Q is the magnitude of the...
09:03
Morphometric Analyses of Shape: The Analysis Software Toolbox for Craniofacial Shape Quantification in Zebrafish
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2026
This work describes a protocol for quantifying craniofacial cartilage shape using free software (tpsDigs2, MorphoJ, and PAST) to measure changes in facial structure in zebrafish larvae.
03:10
Soil Core Sample Collection for Water Retention Property Analysis
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2026
Source:Alessia J. Marchesan1, Guillermo Hernandez Ramirez11Renewable Resources, University of Alberta. This video demonstrates the technique for collecting a soil sample for hydraulic property analysis. The sampling area is cleared, and the top crust is evacuated. The sampling ring is then placed into the soil to collect the sample. The ring with the sample is then cleaned, labeled, packed, and transferred undisturbed for analysis.
11:01
Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention
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Cited by 12 •
2015
Our goals were to design, manufacture and test ferromagnetic stents for endothelial cell capture. Ten stents were tested for fracture and 10 more stents were tested for retained magnetism. Finally, 10 stents were tested in-vitro and 8 more stents were implanted in 4 pigs to show cell capture and retention.
FAQs
Elastic recovery allows a material or structure to move back toward its intended geometry when the applied load is removed. Permanent deformation remains after unloading, so the final shape departs from the design. Shape retention therefore reflects the balance between these responses, making post-loading geometry a useful indicator of dimensional stability and performance reliability.
Stiffness limits how readily a structure changes geometry under load, while yield strength helps indicate when deformation becomes permanent. A design with greater resistance to deformation can preserve dimensions more effectively, but engineers must evaluate these properties together because shape change depends on the material response and the loading conditions used in service.
Viscoelastic behavior can make shape change depend on the material’s response over time rather than only on the immediate load. Temperature and moisture can also alter that response, potentially changing whether the material recovers its geometry or retains a departure from it. Testing under relevant environmental conditions is therefore important when dimensional stability matters.
Engineers assess shape retention with controlled mechanical or environmental testing. They can expose a material or structure to a defined forming, loading, or environmental condition, then evaluate the resulting geometry in relation to the intended shape. Comparing responses under controlled conditions helps identify influential variables and supports decisions about material selection and component design.
It is relevant wherever geometry affects function or consistency, including polymers, composites, textiles, biomedical devices, and precision components. In these areas, retaining the intended form can support reliable operation, dimensional stability, longer service life, and manufacturing consistency. The appropriate evaluation depends on the mechanical and environmental exposures expected during use.
Test results reveal how a candidate material or structure responds after forming, loading, or environmental exposure. Engineers can use that evidence to judge whether the design preserves required dimensions, identify conditions that promote unwanted permanent change, and refine material or structural choices. This connects controlled evaluation with performance reliability and service-life goals.