Mat Properties. The catalytic converter shell has to be designed in such a way as to provide the required mounting pressure for a given catalyst substrate and a given mat. The mounting pressure of the mat increases exponentially during the compression from its initial bulk density to the final target density.
Sometimes a severely bloated stomach â along with constipation, nausea and vomiting â is due to a bowel obstruction, which is caused by scar tissue or a tumor. When these grow and press against the bowel, the bowels become blocked and hold in fluid and stool.
1 The body may not digest and absorb such foods, and if gas is not passed out, cause bloating. 2  inadequate intake of water, reducing the ability of the body to digest food. 3  accumulation of liquids. 4  Abdominal bloating caused by excessive accumulation of liquid inside the cavity is called ascites.