A hiatal hernia occurs when part of the stomach pushes through an opening in the diaphragm. Symptoms of a hiatal hernia can include heartburn, chest pain, or none at all. Tests like a barium swallow X ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Wirecutter Staff A breakdown or flat tire can happen to anyone at any time.

Abstract: This paper presents the design and control system of a linear short-stroke reluctance motor for a diaphragm vacuum pump. Based on the finite elements method (FEM) the force capability of the ...

The S1 heart sound happens when the tricuspid and mitral valves close. A loud S1 may mean there is a problem with the heart, like mitral stenosis or tachycardia. Mitral stenosis is when the mitral ...