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Spontaneous coronary artery dissection (SCAD) is an uncommon but potentially lethal condition in which one of the coronary arteries that supply the heart, spontaneously develops a blood collection, or hematoma, within the artery wall due to a tear in the wall. SCAD is one of the arterial dissections that can occur. [1]
In mechanics, strain is defined as relative deformation, compared to a reference position configuration. Different equivalent choices may be made for the expression of a strain field depending on whether it is defined with respect to the initial or the final configuration of the body and on whether the metric tensor or its dual is considered.
ACADS deficiency and SCAD deficiency, [1] Short-chain acyl-coenzyme A dehydrogenase deficiency has an autosomal recessive pattern of inheritance. Symptoms: Cardiomyopathy , delayed speech [2] Causes: Mutations in the ACADS gene [3] Diagnostic method: Urine test, Genetic test [4] [5] Treatment: Intravenous fluids/ high dextrose concentration [5]
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The stress and strain can be normal, shear, or a mixture, and can also be uniaxial, biaxial, or multiaxial, and can even change with time. The form of deformation can be compression, stretching, torsion, rotation, and so on. If not mentioned otherwise, stress–strain curve typically refers to the relationship between axial normal stress and ...
For the plane stress case, the orientation of the plane may be specified by an angle in the plane, and the stresses and strains acting on this plane may be computed via Mohr's circle. For the general 3D case, the orientation may be specified via a unit normal vector of the plane, and the associated stresses strains may be computed via a tensor ...
The Spanish bank stress tests are out and the initial verdict is that the shortfall was just not as bad as expected. In order to encompass about 90% of Spain's banking system assets, the stress ...
It is possible to describe anelastic behaviour considering a set of parameters of the material. Since the definition of anelasticity includes linearity and a time dependant stress–strain relation, it can be described by using a differential equation with terms including stress, strain, and their derivatives.