There are many causes of chest pain. One is angina which results from inadequate oxygen supply to the heart muscle. Angina can be caused by coronary artery disease or spasm of the coronary arteries. Chest pain can also be due to a heart attack (coronary occlusion) and other important diseases.
Conclusions We have demonstrated here the significant effect of temperature on the conductivity measurements of solutions. This highlights the importance of maintaining standard and test solutions close to the reference temperature when taking measurements in order to obtain the most accurate conductivity values.
Ï(T) is the solution conductivity at any temperature T; Ï(To) is the solution conductivity at a reference temperature To, usually 25Â°C; and, Î± is the temperature coefficient in Â°C-1. Common alphas (Î±) are listed in the table below. Because dissolved solids are usually dominated by sodium chloride, a value of Î±=2%/Â°C is often used.