Charles Susskind · 1973
The analysis focused on detecting excessive fluid accumulation in interstitial lung regions, not on identifying diseased lung tissue itself. Prior attempts to distinguish normal from abnormal cells by microwave methods at the University of Pennsylvania and in the USSR yielded negative results because electrical properties are not sufficiently different. The author noted that wavelength must be smaller than the area being mapped, so centimetric waves suit decimetric lung cavities.
M. L. Singewald et al. · 1973
W. B. STAVINOHA, S. T. WEINTRAUB, A. T. MODAK · 1973
Uniform cholinesterase inactivation was achieved in rat brain within 4 s and in mouse brain within 2 s. In rats, whole-brain acetylcholine was 25-4 + 1-5 nmol/g after irradiation compared to 13:8 + 1-7 nmol/g after standard sacrifice. In mice, whole-brain acetylcholine was 25:5 + 2:6 nmol/g after irradiation compared to 13-7 + 1:7 nmol/g after standard sacrifice.
Ronald J. Spiegel, William T. Jones · 1973
The paper introduces a semiclassical theory that treats the electromagnetic field classically and the membrane dipoles quantum mechanically using the density matrix approach. The model assumes a double-dipole layer membrane where nerve excitation occurs when enough outer dipoles flip orientation to reduce the potential barrier.
Gerald Silverberg · 1973
J. C. Schwarzacher, L. J. Audus · 1973
Researchers exposed roots of Lepidium sativum, coleoptiles of Avena sativa, and sporangiophores of Phycomyces blakesleeanus to an intense magnetic gradient while rotating them on a slow klinostat at 0-5 rpm. All three species showed a growth curvature away from the magnet gap, down the magnetic gradient toward lower flux density, after an initial lag period. The reciprocal of the reaction time was the best measure of response and correlated with magnetic field parameters: for Avena and Phycomyces with log dH/dx and log H·dH/dx, and for Lepidium with log H. Only Stage I sporangiophores of Phycomyces responded to the magnetic gradient, while later stages showed no consistent curvature.
Bernard SERVANTIE et al. · 1973
Fischer G. · 1973
E. Aurell, B. Tengroth · 1973
Block JB, Zubrod CG · 1973
Davis JA · 1973
Becker CM, Malhotra IV, Hedley-Whyte J · 1973
The average maximum radiofrequency current in the electrocardioscope ground electrode was 175 milliamperes (range 20-290). Approximately 100 milliamperes per square centimeter for about 10 seconds can cause skin damage. The authors suggested that radiofrequency inductors (chokes) may prevent these burns.
G. A. Stasiuk · 1973
Smith SW, Brown DG · 1973
The study monitored radiation from 20 Hz to 10 GHz at ten sites within a 25-mile radius of Washington, D.C., using a mobile van equipped with six broadband and six wideband receivers. Peak power densities were summed arithmetically over four biologically relevant frequency bands based on human body absorption percentages.
R. I. Kovach · 1973
A. L. Klascius · 1973
A. P. Balutina · 1973
FREEMAN W. COPE · 1973
Charles H. Bonney, Pedro L. Rustan, Jr., Gary E. Ford · 1973
Department of the Navy Electronic Systems Command · 1973
D.E. Schmidt, M.J. Schmidt, G.A. Robison · 1973
Researchers applied microwave irradiation sacrifice to rats and measured brain temperature, enzyme inactivation rates, and levels of acetylcholine and cyclic AMP. Brain temperature reached 70-80°C within 15-20 seconds of microwave exposure. Complete and simultaneous inactivation of cholinesterase, phosphodiesterase, and adenyl cyclase occurred throughout the brain at temperatures of 60-75°C. Acetylcholine levels were higher than literature values, free choline was significantly lower at 28.7 nmoles/mg whole brain, and cyclic AMP levels were comparable to those from rapid freezing.
CAINE, S. · 1973
S. J. Baum, W. D. Skidmore, M. E. Ekstrom · 1973
Unknown authors · 1973
The publication consists of a series of papers. The papers discuss problems and activities related to commercial, medical, and domestic implications of nonionizing radiation.
Eugene M. Taylor et al. · 1973
Non-radiation heating produced evoked potential changes comparable to microwave heating of the same magnitude. Both microwave and exchanger heating decreased latency only in late components of the evoked potential. Concurrent cooling during radiation reduced or reversed the latency changes, showing they track temperature direction and magnitude.
