Abstract The demand for multiphase flow measurement is widespread in petrochemical and other fields. Due to its small size, easy maintenance, no moving parts, electromagnetic flowmeters are widely used single fluid measurement. With the increasing application of traditional fields, problems applications have been discovered. How optimize structure flowmeter how improve accuracy has become a new...

Use of affordable and simple tools for screening chronic obstructive pulmonary disease (COPD) is limited. In recent years, measurement forced expiratory volume in the 6 s (FEV6) has been researched as a substitute to replace vital capacity measurements. This work was performed analyze effectiveness simplified handheld flowmeter device search an optimal cutoff value FEV1/FEV6 detect airflow narr...

• Phasic coronary inflow and its determinants have been studied by means of differential pressure, 1 a constant pressure flow-meter, 2 an orifice meter, 8 a cannulating type of electromagnetic flowmeter, 4 and a differential transformer. 15 All are cumbersome and require the use of anesthetics, surgical trauma , anticoagulants, and insertion of the device into the coronary artery of the open an...