Accession Number : AD0659471

Title :   WHOLE ORGAN FREEZING AND THAWING HEAT TRANSFER AND THERMAL PROPERTIES.

Descriptive Note : Quarterly rept. 1 Apr-30 Jun 67,

Corporate Author : GEOSCIENCE LTD LA JOLLA CALIF

Personal Author(s) : Poppendiek,H. F. ; Greene,N. D. ; Randall,R. ; Furgerson,H. G.

Report Date : 30 JUN 1967

Pagination or Media Count : 17

Abstract : Numerical freezing solutions were used to predict the transient freezing histories of thin slabs of biological specimens with varying percentages of water content and specimen thickness. From such analyses freezing times and temperature-time gradients were determined as a function of water content. Additional measurement of the heat capacities of bovine tissues were measured at liquid nitrogen, carbon dioxide, and room temperatures. Also, heat capacities of bovine suet and pure protein powder were measured. The heat capacities of bovine brain, heart, and liver were predicted from the classical heat capacity equation for mixtures; predicted values were lower than the experimental ones. (Author)

Descriptors :   (*CRYOGENICS, TISSUES(BIOLOGY)), (*TISSUES(BIOLOGY), FREEZING), (*THERMAL CONDUCTIVITY, TISSUES(BIOLOGY)), ICE, WATER, HEAT TRANSFER, BOVINES, TEMPERATURE, BRAIN, HEART, LIVER, THERMAL PROPERTIES, GRAPHICS

Subject Categories : Anatomy and Physiology
      Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE