MEASUREMENT OF SPECIFIC HEAT OF POLYETHYLENE

Measurement of Specific Heat Capacity of Saltstone

Measurement of temperature-dependent specific heat of biological tissues.

We measured specific heat directly by heating a sample uniformly between two electrodes by an electric generator. We minimized heat loss by styrofoam insulation. We measured temperature from multiple thermocouples at temperatures from 25 degrees C to 80 degrees C while heating the sample, and corrected for heat loss. We confirm method accuracy with a 2.5% agar-0.4% saline physical model and obt...

Measurement of the specific heat capacity of liver phantom.

Phantoms are often used to simulate tissue during the development, testing and calibration of medical devices. In order to infer the specific absorption rate (SAR) and resistive heating in phantoms from temperature measurements, the specific heat capacity and density of the phantom are needed. Stauffer et al (2003 Int. J. Hyperth. 19 89-101) developed several phantoms that mimic dielectric prop...

Measurement of Specific Heat Functions by Differential Scanning Calorimetry

When a sample material is subjected to a linear temperature program, the heat flow rate into the sample i s proportional to its instantaneous specific heat. By recording this heat flow rate as a function of temperature, and comparing it with the heat flow rate into a standard material under the same conditions, the specific heat of the sample i s determined as a fundion of temperature. The meth...

Measurement of the SOC State Specific Heat in 4 He

When a heat flux Q is applied downward through a sample of liquid He near the lambda transition, the helium self organizes such that the gradient in temperature matches the gravity induced gradient in 7\. All the helium in the sample is then at the same reduced temperature ^soc and the helium is said to be in the Self-Organized Critical (SOC) state. We have made preliminary measurements of the ...