Einsteinium is radioactive rare earth metal named after Albert Einstein. It is of no commercial importance and only a few of its compounds are known. Einsteinium: historical information. Einsteinium was discovered by Workers at Argonne, Los Alamos, USA, and the University of California at Berkeley, USA. in 1952 at USA. Origin of name: named after Albert Einstein.
gradÂ·ed exÂ·erÂ·cise test. Multistage exercise testing (usually on treadmill or bicycle ergometer) in which exercise intensity is progressively increased (graded) through levels that bring the test subject to a self-imposed fatigue level. See: stress test, Astrand-Ryhming Cycle Ergometer Test.
An EKG, or electrocardiogram, measures your heartâs activity. In an exercise stress test, you have an EKG while you walk or jog on a treadmill. You may need these tests if you have symptoms of heart disease, like chest pain. Or you may need them if you already have heart disease or you have a high risk for heart disease.