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Related Concept Videos

Measurements of Strain01:27

Measurements of Strain

2.6K
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
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Acids, Bases and Neutralization Reactions03:26

Acids, Bases and Neutralization Reactions

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An acid-base reaction is one in which a hydrogen ion, H+, is transferred from one chemical species to another. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations within cells or lakes and oceans to the industrial-scale production of fertilizers, pharmaceuticals, and other substances essential to the society.
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Acids, Bases and Neutralization Reactions01:27

Acids, Bases and Neutralization Reactions

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Acids and bases play several important roles in biology. The pH of a biological system can significantly impact the function of biological molecules, including enzymes, proteins, and nucleic acids. For example, enzymes have optimal pH ranges for their activity, and changes in pH can denature or alter their structure, affecting their function. Acids and bases also play a crucial role in cellular signaling and communication. The pH of the extracellular fluid around cells can influence the...
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Thermal Strain01:19

Thermal Strain

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Thermal strain is a concept that arises when we consider how temperature changes affect structures. Unlike the conventional assumption that structures remain constant under load, real-world scenarios often involve temperature fluctuations that can significantly impact these structures. Consider a homogeneous rod with a uniform cross-section resting freely on a flat horizontal surface. If the rod's temperature increases, the rod elongates. This elongation is proportional to the temperature...
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Shearing Strain01:20

Shearing Strain

1.5K
The shearing strain represents a cubic element's angular change when subjected to shearing stress. This type of stress can transform a cube into an oblique parallelepiped without influencing normal strains. The cubic element experiences a significant transformation when exposed solely to shearing stress. Its shape alters from a perfect cube into a rhomboid, clearly demonstrating the effect of shearing strain. The degree of this strain is considered positive if it reduces the angle between the...
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Strain Energy01:13

Strain Energy

1.0K
Strain energy is a fundamental concept in the field of materials science and structural engineering, describing the energy absorbed by a material or structure when it is deformed under load.
Consider a rod that is fixed at one end and subjected to an axial force at the free end. This axial force induces stress within the rod, leading to its elongation. As the axial force increases, so does the elongation of the rod, illustrating a direct relationship between the force applied and the resulting...
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Related Experiment Video

Updated: Feb 13, 2026

Quantification of Mouse Heart Left Ventricular Function, Myocardial Strain, and Hemodynamic Forces by Cardiovascular Magnetic Resonance Imaging
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Quantification of Mouse Heart Left Ventricular Function, Myocardial Strain, and Hemodynamic Forces by Cardiovascular Magnetic Resonance Imaging

Published on: May 24, 2021

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Vendor-Neutral Right Ventricular Strain Measurement.

Zhifeng Gao1, Jeffrey Bortman2, Faraz Mahmood3

  • 1Department of Anesthesiology, Peking University International Hospital, Beijing, China; Departments of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.

Journal of Cardiothoracic and Vascular Anesthesia
|March 21, 2018
PubMed
Summary

Vendor-neutral platforms reliably assess right ventricular (RV) strain, correlating well with standard RV function tests. This demonstrates RV strain

Keywords:
correlationinter-observerintra-observerreproducibilityright ventricular functionstrain

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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

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Measurement of Compressive Stress-Strain Response at Small-Strains
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Measurement of Compressive Stress-Strain Response at Small-Strains

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Last Updated: Feb 13, 2026

Quantification of Mouse Heart Left Ventricular Function, Myocardial Strain, and Hemodynamic Forces by Cardiovascular Magnetic Resonance Imaging
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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
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Measurement of Compressive Stress-Strain Response at Small-Strains
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Measurement of Compressive Stress-Strain Response at Small-Strains

Published on: December 5, 2025

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Area of Science:

  • Cardiology
  • Echocardiography
  • Medical Imaging Analysis

Background:

  • Right ventricular (RV) function assessment is crucial in cardiovascular disease management.
  • Evaluating RV strain offers a sensitive metric for systolic function.
  • Standardized RV strain assessment across different imaging platforms remains a challenge.

Purpose of the Study:

  • To determine the feasibility and reliability of a vendor-neutral platform for evaluating RV strain.
  • To assess the intra- and inter-observer variability of RV strain measurements.
  • To correlate RV strain with established RV functional parameters.

Main Methods:

  • Retrospective analysis of 2D transesophageal echocardiography (2D TEE) images from 15 patients.
  • Utilized vendor-neutral software to measure longitudinal strain (LS) and conventional RV parameters (FAC, TAPSE, S').
  • Calculated intra- and inter-observer reproducibility using intraclass correlation coefficients (ICCs).

Main Results:

  • Good to excellent reproducibility was observed for most RV strain parameters (ICC 0.75-1.00).
  • Basal free wall longitudinal strain (FWLS) showed slightly lower reproducibility (ICC 0.670-0.749).
  • RV strain (FWLS, GLS) correlated moderately to strongly with FAC, TAPSE, and S' (r=0.667-0.721).

Conclusions:

  • Vendor-neutral platforms enable reproducible and reliable RV strain assessment.
  • RV strain is a feasible and sensitive tool for evaluating RV systolic function.
  • This approach facilitates cross-platform comparability in RV function analysis.