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The Army Physical Fitness Test (APFT) was a test designed to measure the muscular strength, endurance, and cardiovascular respiratory fitness of soldiers in the United States Army. The test contained three events: push-ups, sit-ups, and a two-mile run with a soldier scoring from 0 to 100 points in each event based on performance.
Beckman model 72 pH meter, 1960. 781 pH/Ion Meter pH meter by Metrohm. A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2] The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode ...
Airman executing a push-up. The United States Air Force Physical Fitness Assessment (PFA) is designed to test the body composition, muscular strength/endurance, and cardiovascular respiratory fitness of airmen in the United States Air Force. As part of the Fit to Fight program, the Air Force adopted a more stringent physical fitness assessment ...
Esophageal pH monitoring. In gastroenterology, esophageal pH monitoring is the current gold standard for diagnosis of gastroesophageal reflux disease (GERD). It provides direct physiologic measurement of acid in the esophagus and is the most objective method to document reflux disease, assess the severity of the disease and monitor the response ...
He didn't just beat it. He crushed it. As his teacher looked on in amazement, and his classmates cheered, Nicholas did 70, then 100, then 200, and then added 40 more for good measure. His physical ...
A glass electrode is a type of ion-selective electrode made of a doped glass membrane that is sensitive to a specific ion. The most common application of ion-selective glass electrodes is for the measurement of pH. The pH electrode is an example of a glass electrode that is sensitive to hydrogen ions. Glass electrodes play an important part in ...