Biological effects of millimeter-wave irradiation. Final report, 15 April 1984-31 March 1986

Technical Report · Wed Apr 01 00:00:00 EST 1987

OSTI ID:6013602

Gandhi, O P; Hill, D W; Furia, L; Iskander, M F; Ghodgaonkar, D

Experiments were conducted to verify the reported high degree of sensitivity of growth rates of yeast cultures to frequency of millimeter-wave irradiation in the band 41.650 to 41.798 GHz. A new irradiation chamber was designed and built to allow simultaneous irradiation and sham irradiation of recirculating suspension of Saccharomyces cerevisiae that were maintained with a temperature difference of less than 0.01 C. No difference larger than plus or minus 4% was ever detected in the growth rates at any of the highly stabilized (within plus or minus 50 Hz) irradiation frequencies for which the effects had been reported by earlier workers. Experiments were also performed to determine the Raman spectra of cultures of Bacillus megaterium to investigate if these are dependent on the stage of their life cycle as reported by Webb et al. The results were negative. A further study to investigate the ability of millimeter waves to induce conformational changes in lipid bilayers of dipalmitoylphosphatidycholine (DPPC) liposomes below and above the transition temperature of 41/sup 0/C also gave negative results. For these experiments the conformational characteristics of the liposomes were evaluated using Raman spectra with and without millimeter-wave irradiation at 41.650 GHz.

• Research Organization: Utah Univ., Salt Lake City (USA). Dept. of Electrical Engineering
• OSTI ID: 6013602
• Report Number(s): AD-A-182890/4/XAB; UTEC-86-095
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
SHORT WAVE RADIATION
BIOLOGICAL RADIATION EFFECTS
YEASTS
BACILLUS
CYTOPLASM
GHZ RANGE 01-100
IRRADIATION
LAYERS
LIPIDS
LIPOSOMES
RAMAN SPECTRA
TRANSITION TEMPERATURE
BACTERIA
BIOLOGICAL EFFECTS
CELL CONSTITUENTS
ELECTROMAGNETIC RADIATION
FREQUENCY RANGE
FUNGI
GHZ RANGE
MICROORGANISMS
ORGANIC COMPOUNDS
ORGANOIDS
PHYSICAL PROPERTIES
PLANTS
RADIATION EFFECTS
RADIATIONS
RADIOWAVE RADIATION
SPECTRA
THERMODYNAMIC PROPERTIES
560400* - Other Environmental Pollutant Effects