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  • BIOTECHNOLOGY  (65)
  • 1970-1974  (65)
  • 1965-1969
  • 1971  (65)
  • 1
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    System distortion errors in radiorespirometry curves. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Description of a method for evaluating the maximum error producible in the system distortion of a carrier gas type radiorespirometer. The maximum producible error is evaluated on the basis of a second order. The maximum producible decrease in peak height output is calculated as a function of the system's time constant or flow rate by using the system's transfer function and the Laplace transformation equation (Gardner and Barnes, 1961).
    Keywords: BIOTECHNOLOGY
    Type: International Journal of Applied Radiation and Isotopes; 22; 1971
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Measurements, modeling, control and simulation - as applied to the human left ventricle for purposeful physiological monitoring. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Interdisciplinary engineering research effort in studying the intact human left ventricle has been employed to physiologically monitor the heart and to obtain its 'state-of-health' characteristics. The left ventricle was selected for this purpose because it plays a key role in supplying energy to the body cells. The techniques for measurement of the left ventricular geometry are described; the geometry is effectively displayed to bring out the abnormalities in cardiac function. Methods of mathematical modeling, which make it possible to determine the performance of the intact left ventricular muscle, are also described. Finally, features of a control system for the left ventricle for predicting the effect of certain physiological stress situations on the ventricle performance are discussed.
    Keywords: BIOTECHNOLOGY
    Type: Franklin Institute; vol. 292
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    NASA's contributions to patient monitoring, appendix (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Health care problems, and markets for patient monitoring equipment are discussed along with contributions to all phases of patient monitoring, and technology transfer to nonaerospace problems. Health care medical requirements, and NASA achievements in patient monitoring are described, and a summary of the technology transfer is included.
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-131538
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Study directed at development of an implantable biotelemetry ion detector (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A literature search was conducted to currently update known information in the field of ion-selective electrodes. The review attempts to identify present trends in cation and anions selective electrodes pertinent to the area of bioimplantable units. An electronic circuit was designed to provide the high impedance interface between the ion-selective sensors and signal-processing equipment. The resulting design emphasized the need for low power and miniaturization. Many of the circuits were constructed and used to evaluate the ion-selective electrodes. A cuvette capable of holding the ion-selective and the reference electrodes was designed and constructed. This equipment was used to evaluate commercially available ion-selective electrodes and the electrodes designed and constructed in the study. The results of the electrode tests are included.
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-114415 , R-701
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Aircrew oxygen system development Final summary report (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Onboard aircrew oxygen generating system for tactical aircraft
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-1741
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Stimulus generalization of gravity produced by variations in angular velocity and radius (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Gravitational stimuli due to variations in angular velocity and radius, noting effects on behavioral control
    Keywords: BIOTECHNOLOGY
    Type: AIAA PAPER 71-884 , WEIGHTLESSNESS AND ARTIFICIAL GRAVITY MEETING; Aug 09, 1971 - Aug 11, 1971; WILLIAMSBURG, VA; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Odor test (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: To prevent the use of spacecraft material that would outgas objectionable or nauseating odors, an odor test was developed. This test provided a means whereby candidate spacecraft materials were subjected to a particular environment and the outgassed products were evaluated by an odor panel. This panel was comprised of individuals with acute olfactory senses. The test results of the odor panel provided design engineers with data regarding potential material-odor problems. The odor-test procedure, panel-member selection, and odor scoring methods are described and typical test results are presented.
    Keywords: BIOTECHNOLOGY
    Type: Conf. on Mater. for Improved Fire Safety; p 203-205
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Lighting factors affecting the visibility of a moving display. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Compensatory tracking performance was shown to be substantially degraded by oscillation of the visual display at both 1.0 and 2.0 Hz. The severity of this decrement was altered significantly by changes in both the color and the intensity of the display illumination. Performance was significantly better with red light illuminating the display at 0.05 mL than with blue light at the equivalent luminance. This improvement in performance was similar in magnitude to that found for an increase in broad-band illumination of the display where luminance was increased from 1/2 log unit below to 1/2 log unit above 0.05 mL. Visual mechanisms that may have been responsible for these findings are suggested.
    Keywords: BIOTECHNOLOGY
    Type: Perception and Psychophysics; 10; Dec. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Apollo 14 food system. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The program for improving foods for use during space flights consists of introducing new foods and food-handling techniques on each successive manned space flight. Because of this continuing improvement program, the Apollo 14 food system was the most advanced and sophisticated food system to be used in the U.S. space program. The food system used during the Apollo 14 mission and recent space-food-system advances are described and discussed in regard to their usefulness for future manned space flights.
    Keywords: BIOTECHNOLOGY
    Type: Aerospace Medicine; 42; Nov. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    The null magnetic field as reference for the study of geomagnetic directional effects in animals and man. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Techniques for producing very low and zero magnetic fields are considered, giving attention to the compensation of the geomagnetic field by a Helmholtz coil system, approaches utilizing the shielding power of highly permeable alloys, and the complete exclusion of the geomagnetic field with the aid of a superconductive shield. Animal experiments in low magnetic fields are discussed, together with the exposure of man to 'null' magnetic fields and the Josephson junction as a possible biosensor of magnetic fields. It is found that neither the functions nor the behavior of man changes significantly during a two-week exposure to magnetic fields below 50 gammas.
    Keywords: BIOTECHNOLOGY
    Format: text
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    NASA TECHNICAL REPORTS
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