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  • Chemistry  (14)
  • AEROSPACE MEDICINE  (11)
  • PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR  (6)
  • Animals  (5)
  • AERODYNAMICS  (4)
  • 1995-1999  (12)
  • 1975-1979  (17)
  • 1970-1974  (11)
  • 11
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    Gauge invariance, current conservation, and GIAO's. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The well-known relationship between gauge invariance and current conservation is exhibited within the usual quantum mechanical formalism. It is then shown that the use of Gauge Invariant Atomic Orbitals does not necessarily lead to the expected current conservation. The reason is found to lie in the constrained nature of the gauge invariance which is provided by the use of GIAO's. It is concluded that this invariance is, of itself, no argument in favor of their use.
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: Journal of Chemical Physics; 58; Feb. 15
    Format: text
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  • 12
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    Comparison of water immersion and saline infusion as a means of inducing volume expansion in man (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The study compares the natriuresis induced by head-out water immersion to that of a standard saline infusion and assesses the relative effectiveness of these two techniques as volume determinants of renal sodium and water handling in humans in a seated posture. The data obtained show that the volume stimulus of immersion is identical to that of standard saline-induced extracellular fluid volume expansion (ECVE) in normal seated subjects. The ability of head-out water immersion to induce a natriuresis without a concomitant increase in total blood volume and with a decrease in body weight suggests that water immersion may be preferred as an investigative tool for assessing the effects of ECVE in man.
    Keywords: AEROSPACE MEDICINE
    Type: Journal of Applied Physiology; 39; July 197
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  • 13
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    Suppression of ADH during water immersion in normal man (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: A study was undertaken to ascertain whether diuresis induced by immersion is medicated by an inhibition of ADH. Immersion resulted in a progressive decrease in ADH excretion from 80.1 + or - 7 (SEM) to 37.3 + or - 6.3 microU/min (P less than 0.025). Cessation of immersion was associated with a marked increase in ADH from 37.3 + or - 6.3 microU/min to 176.6 + or - 72.6 microU/min during the recovery hour (P less than 0.05). Concomitant with these changes, urine osmolality decreased significantly beginning as early as the initial hour of immersion from 1044 + or - 36 to 542 + or - 66 mosmol/kg H2O during the final hour of immersion (P less than 0.001). These findings are consistent with the earlier suggestion that suppression of ADH release contributes to enhanced free water clearance in hydrated subjects undergoing immersion.
    Keywords: AEROSPACE MEDICINE
    Type: Journal of Applied Physiology; 38; June 197
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  • 14
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    Determination of molecular properties by the method of moments (1970)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: Method of moments for determining wave functions used in calculating molecular properties
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: ; ACE(
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  • 15
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    Alterations in acid-base homeostasis during water immersion in normal man (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The effects of water immersion on renal bicarbonate and acid excretion were assessed in 10 normal male subjects. Immersion resulted in a highly significant progressive increase in the rate of sodium and bicarbonate excretion, and in urine pH. Immersion was also associated with a significant increase in urine P-CO2; this increase presupposes a maintained rate of hydrogen secretion in the distal tubular segment. The rapidity of onset of the bicarbonaturia (2 hrs of immersion) and the concomitant increase in urinary P-CO2 suggest that enhanced bicarbonate excretion of immersion cannot be completely accounted for by immersion-induced suppression of aldosterone, and that the natriuresis and bicarbonaturia of immersion is mediated in part by an increased proximal rejection of sodium and bicarbonate.
    Keywords: AEROSPACE MEDICINE
    Type: Journal of Laboratory and Clinical Medicine; 84; Dec. 197
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  • 16
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    Suppression of plasma renin and plasma aldosterone during water immersion in normal man (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Keywords: AEROSPACE MEDICINE
    Type: Journal of Clinical Endocrinology and Metabolism; 41; Sept
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  • 17
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    Quantitative density visualization in a transonic compressor rotor (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The flow in a 59-cm-diameter high-work transonic compressor rotor has been visualized using a fluorescent gas, 2,3, butanedione, as a tracer. The technique allows the three-dimensional flow to be imaged as a set of distinct planes. Quantitative static density maps were obtained by correcting the images for distortion and nonlinearities introduced by the illumination and imaging systems. These images and maps were used to analyze the three-dimensional nature of the blade's boundary layer and shock system.
    Keywords: AERODYNAMICS
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  • 18
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    Gauge invariance, current conservation, and GIAO's (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The well known relationship between gauge invariance and current conservation is exhibited within the usual quantum mechanical formalism. It is then shown that the use of gauge-invariant atomic orbitals (GIAO) does not necessarily lead to the expected current conservation. The reason is found to lie in the constrained nature of the gauge invariance which is provided by the use of GIAO's. It is concluded that this invariance is, of itself, no argument in favor of their use.
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: NASA-CR-129246 , WIS-TCI-491
    Format: application/pdf
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  • 19
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    Small-pitch-angle synchrotron radiation (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Angular distribution of small-pitch-angle synchrotron radiation
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: NASA-CR-117902 , SU-IPR-405
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  • 20
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    A comparison of the computed and experimental three dimensional flow in a transonic compressor rotor (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The three dimensional inviscid flow in a transonic compressor rotor; total pressure ratio of 1.65, has been numerically computed using MacCormack's time-marching method. This solution is compared to intra-blade static density measurements obtained by gas fluorescence. These results and comparisons illustrate the importance of three dimensional flow phenomena in determining the rotor flow field and show that while the viscous phenomena have an important influence, particularly on the outflow, the inviscid computation properly models the flow in the inlet portion of the rotor passages.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 76-368 , Fluid and Plasma Dynamics Conference; Jul 14, 1976 - Jul 16, 1976; San Diego, CA
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