Hydrogen could decrease the ignition temperature and burn off temperature of methane evidently for a wide concentration range. The T10 and T90 decreased continuous with the increase of hydrogen. For 1 vol.% methane combustion, the T10 and T90 could decrease 45 Â°C and 42 Â°C when the H2/CH4 was equal to 0.05.
What is it? An electrocardiogram â abbreviated as EKG or ECG â is a test that measures the electrical activity of the heartbeat. With each beat, an electrical impulse (or âwaveâ) travels through the heart. This wave causes the muscle to squeeze and pump blood from the heart.
What Is an Electrocardiogram? An electrocardiogram (e-lek-tro-KAR-de-o-gram), also called an EKG or ECG, is a simple, painless test that records the heart's electrical activity. To understand this test, it helps to understand how the heart works. With each heartbeat, an electrical signal spreads from the top of the heart to the bottom. As it travels, the signal causes the heart to contract and pump blood. The process repeats with each new heartbeat.