Permanent Co‐seismic Deformation of the 2013 Mw7.7 Baluchistan, Pakistan Earthquake from High‐resolution Surface Strain Analysis

2021 ◽  
Author(s):  
Guo Cheng ◽  
William D. Barnhart
Keyword(s):  
High Resolution ◽  
Strain Analysis ◽  
Surface Strain ◽  
Seismic Deformation

An investigation of photoresists for use in optical strain analysis

1970 ◽  
Vol 5 (3) ◽  
pp. 162-168 ◽  
Author(s):  
A Luxmoore ◽  
R Hermann
Keyword(s):  
Strain Measurement ◽  
Strain Analysis ◽  
Surface Strain ◽  
High Contrast ◽  
Moire Method ◽  
Optical Strain

Some commercial photoresists have been examined to assess their suitability for use with the moiré method of surface-strain measurement. As most of these materials do not produce a pattern of high contrast directly, some etching and plating procedures are also described. Combined with correct illumination, these processes will produce grids of sufficient contrast for most applications.

High-resolution 3D surface strain magnitude using 2D camera and low-resolution depth sensor

2014 ◽  
Vol 50 ◽  
pp. 34-42
Author(s):  
Matthew Shreve ◽  
Mauricio Pamplona ◽  
Timur Luguev ◽  
Dmitry Goldgof ◽  
Sudeep Sarkar
Keyword(s):  
High Resolution ◽  
Surface Strain ◽  
Low Resolution ◽  
Depth Sensor ◽  
3D Surface ◽  
Strain Magnitude

Quantification of Murine Myocardial Infarct Size using 2D and 4D High Frequency Ultrasound

2022 ◽  
Author(s):  
Melissa M. Dann ◽  
Sydney Q. Clark ◽  
Natasha A. Trzaskalski ◽  
Conner C. Earl ◽  
Luke E. Schepers ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Infarct Size ◽  
Surface Area ◽  
Infarct Volume ◽  
Strain Analysis ◽  
The United States ◽  
Surface Strain ◽  
Coronary Artery Ligation ◽  
Myocardial Infarct Size

Background: Ischemic heart disease is the leading cause of death in the United States, Canada, and worldwide. Severe disease is characterized by coronary artery occlusion, loss of blood flow to the myocardium, and necrosis of tissue, with subsequent remodeling of the heart wall, including fibrotic scarring. The current study aims to demonstrate the efficacy of quantitating infarct size via 2D echocardiographic akinetic length and 4D echocardiographic infarct volume and surface area as in vivo analysis techniques. We further describe and evaluate a new surface area strain analysis technique for estimating myocardial infarction (MI) size after ischemic injury. Methods: Experimental MI was induced in mice via left coronary artery ligation. Ejection fraction and infarct size were measured through 2D and 4D echocardiography. Infarct size established via histology was compared to ultrasound-based metrics via linear regression analysis. Results: 2D echocardiographic akinetic length (r = 0.76, p = 0.03), 4D echocardiographic infarct volume (r = 0.85, p = 0.008) and surface area (r = 0.90, p = 0.002) correlate well with histology. While both 2D and 4D echocardiography were reliable measurement techniques to assess infarct, 4D analysis is superior in assessing asymmetry of the left ventricle and the infarct. Strain analysis performed on 4D data also provides additional infarct sizing techniques, which correlate with histology (surface strain: r = 0.94, p < 0.001, transmural thickness: r = 0.76, p = 0.001). Conclusions: 2D echocardiographic akinetic length, 4D echocardiography ultrasound and strain provide effective in vivo methods for measuring fibrotic scarring after MI.

Lattice Strain Analysis of VPE-Grown ZnS Epitaxial Layers on (001) GaAs by RBS - Channeling and High Resolution XRD Measurements

1996 ◽  
Vol 203 ◽  
pp. 237-242
Author(s):  
G. Leo ◽  
T. Peluso ◽  
N. Lovergine ◽  
Anna Maria Mancini ◽  
L. Vasanelli ◽  
...  
Keyword(s):  
High Resolution ◽  
Lattice Strain ◽  
Strain Analysis ◽  
Epitaxial Layers
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