THERMAL AND ELECTRICAL CONDUCTIVITIES OF BIOLOGICAL FLUIDS AND TISSUES

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Abstract:

Experimental electrical conductivities of human gastric juices, urine and bovine aqueous and vitreous humours were determined. Special cells for the determination of electrical conductivities for tissues has been designed, constructed, and tested. Experimental measurements of the electrical conductivity of bovine blood were determined as a function of hemolysis. Changes in the electrical conductivity of hemolyzed blood have been related to erythrocyte damage. A modified thermal conductivity apparatus was used to measure the conductivities of bovine lung, liver, kidney, brain, bone marrow, and aqueous and vitreous humour, and chicken skin. The correlations between thermal conductivity and physical properties of biological tissues and fluids were studied. Investigations of the effect of freezing bovine liver in liquid nitrogen on thermal conductivity have been conducted. The techniques of freezing blood in liquid nitrogen have been examined also. Cryogenically frozen and stored blood samples from the Presbyterian Medical Center in San Francisco were thawed and electrical and thermal conductivity measurements were made and the results analyzed.

Author(s):
Poppendiek, H. F. ; Greene, N. D. ; Chambers, J. E. ; Feigenbutz, L. V. ; Morehouse, P. M.
Author Organization(s):
GEOSCIENCE LTD LA JOLLA CA
Descriptive Note:
Annual rept. for 1 Apr 1964-31 Mar 1965
Annotation:
Thermal and electrical conductivities of biological fluids and tissues.
Pagination:
0038

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Availability: Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
GLR-34
Contract/Grant Number(s):
NONR-409500
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_1.2.7_Experimentation; JCA_5_Command and Control; JCA_4.5.4_Requirements Definition; JCA_4.5_Operational Contract Support; JCA_5.6.3_Assess Achievement of Objectives; JCA_5.6_Monitor
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*ELECTRICAL CONDUCTIVITY, *BODY FLUIDS, *ERYTHROCYTES, DAMAGE, BIOLOGY, BRAIN, HUMANS, FREEZING, THERMAL CONDUCTIVITY, LUNG, LIVER, BOVINES, CRYOGENICS, BONE MARROW, BLOOD, BLOOD PLASMA, KIDNEYS, BIOPHYSICS
Field(s)/Group(s):
Biochemistry
Keyword(s):
STRESSES(PHYSIOLOGY)
Report Date:
1965 Mar 31