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  • Chemical Engineering  (368)
  • BIOTECHNOLOGY  (305)
  • 1970-1974  (673)
  • 1900-1904
  • 1972  (673)
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  • 1970-1974  (673)
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  • 101
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    Pilot dynamics for instrument approach tasks: Full panel multiloop and flight director operations (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Measurements and interpretations of single and mutiloop pilot response properties during simulated instrument approach are presented. Pilot subjects flew Category 2-like ILS approaches in a fixed base DC-8 simulaton. A conventional instrument panel and controls were used, with simulated vertical gust and glide slope beam bend forcing functions. Reduced and interpreted pilot describing functions and remmant are given for pitch attitude, flight director, and multiloop (longitudinal) control tasks. The response data are correlated with simultaneously recorded eye scanning statistics, previously reported in NASA CR-1535. The resulting combined response and scanning data and their interpretations provide a basis for validating and extending the theory of manual control displays.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-2019
    Format: application/pdf
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  • 102
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    Study of the techniques feasible for food synthesis aboard a spacecraft (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Synthesis of sugars by Ca(OH)2 catalyzed formaldehyde condensation (the formose reaction) has produced branched carbohydrates that do not occur in nature. The kinetics and mechanisms of the homogeneously catalyzed autocatalytic condensation were studied and analogies between homogeneous and heterogeneous rate laws have been found. Aldol condensations proceed simultaneously with Cannizzaro and crossed-Cannizzaro reactions and Lobry de Bruyn-Van Eckenstein rearrangements. The separate steps as well as the interactions of this highly complex reaction system were elucidated. The system exhibits instabilities, competitive catalytic, mass action, and equilibrium phenomena, complexing, and parallel and consecutive reactions. Specific finding that have been made on the problem will be of interest for synthesizing sugars, both for sustained space flight and for large scale food manufacture. A contribution to methodology for studying complex catalyzed reactions and to understanding control of reaction selectivity was a broad goal of the project.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-126397
    Format: application/pdf
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  • 103
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    Results of intravehicular manned cargo-transfer studies in simulated weightlessness (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: A parametric investigation was conducted in a water immersion simulator to determine the effect of package mass, moment of inertia, and size on the ability of man to transfer cargo in simulated weightlessness. Results from this study indicate that packages with masses of at least 744 kg and moments of inertia of at least 386 kg-m2 can be manually handled and transferred satisfactorily under intravehicular conditions using either one- or two-rail motion aids. Data leading to the conclusions and discussions of test procedures and equipment are presented.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TN-D-6774 , L-8099
    Format: application/pdf
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  • 104
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    Experimental study of visual accommodation (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: A summary report of a research effort related to the human visual accommodation system is presented. A theoretical study of the accommodation system was made. Subsequent effort was aimed at the development of specialized instrumentation for experiments designed to lead to understanding the nature of the control system in human accommodation. The necessary instrumentation consisted primarily of: (1) an automatic optometer to measure the state of eye focus, (2) a focus stimulator device to control the apparent optical distance to any target, and (3) a two-dimensional eye tracker. The concepts and designs of the first two instruments have been published in the open literature, but this report contains the first detailed treatment of the Purkinje eye tracker developed under this program. The report also discusses an accommodation lag model to explain the ability of the eye to apparently know the polarity of focus error even though the blur on the retina is to a first-approximation an even function. The interaction of the accommodation and eye movement systems is also discussed, as is the ability to train the visual accommodation system to a surprisingly responsive condition in only a few hours of training.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-2007
    Format: application/pdf
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  • 105
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    Effect of vertical active vibration isolation on tracking performance and on ride qualities (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: An investigation to determine the effect on pilot performance and comfort of an active vibration isolation system for a commercial transport pilot seat is reported. The test setup consisted of: a hydraulic shaker which produced random vertical vibration inputs; the active vibration isolation system; the pilot seat; the pilot control wheel and column; the side-arm controller; and a two-axis compensatory tracking task. The effects of various degrees of pilot isolation on short-term (two-minute) tracking performance and comfort were determined.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-2146
    Format: application/pdf
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  • 106
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    Study of physiological and behavioral response to transitions between rotating and nonrotating environments (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Future manned space missions may require transition between artificial gravity and weightlessness environments. The frequency and rate of such transition will influence the psychophysiological responses of man. Abrupt transfers are examined between such rotating and nonrotating environments to determine the physiological and behavioral responses of man. Five subjects were tested using rates of rotation up to 5 rpm.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-2130 , GDCA-DBD72-001
    Format: application/pdf
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  • 107
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    Experiments evaluating compliance and force feedback effect on manipulator performance (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The performance capability was assessed of operators performing simulated space tasks using manipulator systems which had compliance and force feedback varied. Two manipulators were used, the E-2 electromechanical man-equivalent (force, reach, etc.) master-slave system and a modified CAM 1400 hydraulic master-slave with 100 lbs force capability at reaches of 24 ft. The CAM 1400 was further modified to operate without its normal force feedback. Several experiments and simulations were performed. The first two involved the E-2 absorbing the energy of a moving mass and secondly, guiding a mass thru a maze. Thus, both work and self paced tasks were studied as servo compliance was varied. Three simulations were run with the E-2 mounted on the CAM 1400 to evaluate the concept of a dexterous manipulator as an end effector of a boom-manipulator. Finally, the CAM 1400 performed a maze test and also simulated the capture of a large mass as the servo compliance was varied and with force feedback included and removed.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128605 , DOC-72CAMSS100 , MSC-07239
    Format: application/pdf
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  • 108
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    Analysis of a display and control system man-machine interface concept. Volume 1: Final technical report (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: An evaluation was made of the feasibility of utilizing a simplified man machine interface concept to manage and control a complex space system involving multiple redundant computers that control multiple redundant subsystems. The concept involves the use of a CRT for display and a simple keyboard for control, with a tree-type control logic for accessing and controlling mission, systems, and subsystem elements. The concept was evaluated in terms of the Phase B space shuttle orbiter, to utilize the wide scope of data management and subsystem control inherent in the central data management subsystem provided by the Phase B design philosophy. Results of these investigations are reported in four volumes.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128576 , C71-999/401-VOL-1
    Format: application/pdf
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  • 109
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    Degradation of learned skills. A review and annotated bibliography (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: An overview of the literature dealing with the retention of learned skills is presented. Basic effects of task type, training, retention interval, and recall variables are discussed, providing a background against which more recent literature dealing with operational spaceflights tasks is compared and assessed. Detailed and summary abstracts of research reports having particular relevance to the problem of spaceflight skill retention are provided.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128611 , D180-15080-1
    Format: application/pdf
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  • 110
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    Influence of vision on susceptibility to acute motion sickness studied under quantifiable stimulus-response conditions. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-27
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; Sept
    Format: text
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  • 111
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    Quantitation of serum proteins on whole blood-electroimmunodiffusion technique applicable to capillary blood. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-27
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; Aug. 197
    Format: text
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  • 112
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    The elusive tradeoff - Speed vs accuracy in visual discrimination tasks. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Explicit payoffs were used to control pressures for speed and accuracy in experiments seeking tradeoffs for difficult visual discrimination tasks. The experiments involved stimuli on a cathode ray tube display controlled by a PDP-1 computer, with the subjects performing increasingly complex discrimination tasks and their earnings increasing with their performance. Models for discrimination under time pressure are proposed on the basis of the results.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Perception and Psychophysics; 12; 1A, J; July 197
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  • 113
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    Experimental investigation of an astronaut maneuvering scheme. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: A new concept for astronaut maneuvering in space is proposed, and an experimental study undertaken to test this concept is described. The series of experiments performed appear to promise advantages over previously proposed schemes in terms of propellant economy, system weight, reliability, and safety. The simulation tests established the feasibility of the proposed maneuvering concept by showing that test subjects were able to place their bodies sufficiently near the reference position to avoid excessive angular momentum build-up; no difficulties were encountered in selecting self-rotation maneuvers suitable for effecting desired changes in orientation; and the execution of these maneuvers produced predicted reorientations without tiring the test subject significantly.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Journal of Biomechanics; 5; July 197
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  • 114
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    Effect of set size, age, and mode of stimulus presentation on information-processing speed. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: First, second, and third grade pupils served as subjects in an experiment designed to show the effect of age, mode of stimulus presentation, and information value on recognition time. Stimuli were presented in picture and printed word form and in groups of 2, 4, and 8. The results of the study indicate that first graders are slower than second and third graders who are nearly equal. There is a gross shift in reaction time as a function of mode of stimulus presentation with increase in age. The first graders take much longer to identify words than pictures, while the reverse is true of the older groups. With regard to set size, a slope appears in the pictures condition in the older groups, while for first graders, a large slope occurs in the words condition and only a much smaller one for pictures.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Perceptual and Motor Skills; 34; June 197
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  • 115
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    A note on the biological activity of the noble gas compound xenon trioxide. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Comparison of xenon trioxide for toxicity in the few common oxidants using three bioassays. On a molar basis XeO3 and HOCl were similar, but XeO3 was less active than expected when comparisons were based on normality.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Space Life Sciences; 3; June 197
    Format: text
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  • 116
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    A stochastic bioburden model for spacecraft sterilization. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Development of a stochastic model of the probability distribution for the random variable representing the number of microorganisms on a surface as a function of time. The first basic principle associated with bioburden estimation is that viable particles are removed from surfaces. The second notion important to the analysis is that microorganisms in environments and on surfaces occur in clumps. The last basic principle relating to bioburden modeling is that viable particles are deposited on a surface. The bioburden on a spacecraft is determined by the amount and kind of control exercised on the spacecraft assembly location, the shedding characteristics of the individuals in the vicinity of the spacecraft, its orientation, the geographical location in which the assembly takes place, and the steps in the assembly procedure. The model presented has many of the features which are desirable for its use in the spacecraft sterilization programs currently being planned by NASA.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Space Life Sciences; 3; June 197
    Format: text
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  • 117
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    Congruent and spurious motion in the learning and performance of a compensatory tracking task. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Examination of the importance of congruent and spurious yaw motion in compensatory tracking by eight airline pilots. The pilots, seated erect in the Ames man-carrying rotation device(MCRD), tracked with k/s+1 and k/s(s+1) vehicle dynamics in fixed- and moving-base simulation. Following the learning phase of the experiment, five levels of spurious angular acceleration were superimposed on the motion of the MCRD. Learning of the tracking task was found to be a function of both vehicle dynamics and mode of simulation. The presence of congruent motion information reduced learningtime in k/s(s+1) vehicle dynamics and resulted in lower tracking error in both vehicle dynamics. The spurious angular accelerations resulted in an increase in pilot tracking error; however, the relationship between the magnitude of the acceleration and its effect was highly complex. The data suggest that the minimal disturbance level for spurious angular accelerations during tracking is below 0.4 degec.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Human Factors; 14; June 197
    Format: text
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  • 118
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    Effects of in vivo inhalation of 100% oxygen at reduced pressure on serum and red cell lipids. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: AD-746090 , SAM-TR-71-347 , Aerospace Medicine; 43; June 197
    Format: text
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  • 119
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    Comparative study of two direct methods of bone mineral measurement. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; June 197
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  • 120
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    An auditory display in a dual-axis tracking task. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Results of a study in which subjects were presented concurrently with the primary task of controlling a second-order plant and the secondary task of controlling a first-order plant. The plant errors for the two tasks were shown on separate visual displays. An auditory display, whose output varied in frequency and volume with the error, was used to supplement the secondary task in half of the runs. To study the effects of the auditory display, two performance measures were obtained: (1) the integral of the squared error (ISE) and (2) the describing functions of the human operator. Statistical analysis of the ISE measures indicated that when the secondary task was supplemented with an auditory display, there was a significant improvement in performance on the secondary task. The performance on the primary task improved on the average, but not significantly. The variances of the ISE values decreased for both the tasks, indicating a more consistent behavior with the auditory display. The describing function analysis showed that supplementing the secondary task with the auditory display increased the low frequency gain of the human operator for this task. The describing functions for the primary task did not show any apparent changes.
    Schlagwort(e): BIOTECHNOLOGY
    Format: text
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  • 121
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    The power law for the perception of rotation by airline pilots. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: The purpose of this study was to determine the power laws for the perception of rotation about the three major body axes. Eighteen airline pilots made magnitude estimates of 5-sec pulses of nine angular accelerations having a range of acceleration x time of 10-150 deg/sec. The results showed that (1) the power law with an exponent of 1.4 describes the subjective motion of these pilots for all three major body axes, (2) the power law also describes the perception of motion for individual pilots with a substantial range of exponents, (3) there were significant correlations among the exponents for the three body axes, and (4) the data suggest that the power law over the wide range used may be more complex than implied by a formula with a single exponent.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Perception and Psychophysics; 11; June 197
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  • 122
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    Effects of voluntary eye movement and convergence on the binocular appreciation of depth. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Scaling techniques were employed to establish the relation between perceived distance ratio and physical distance ratio. Measurements were made both with and without free eye movement and under two states of convergence. The results were confirmed using a matching technique. With free eye movement, the perceived ratio is a monotonic increasing function of the physical ratio. Without eye movement, the perceived ratio generally increases, then decreases, as the physical ratio increases. For a given physical ratio, perceived distance ratio is less in the absence of voluntary eye movements. Convergence produces depth micropsia when eye movements are permitted, but not in their absence.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Perception and Psychophysics; 11; June 197
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  • 123
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    Cold sea survival. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Two prototype three-man life rafts were evaluated during the winter months in Arctic waters off Kodiak Island, Alaska, to assess potential survival problems and determine tolerance limits. Each raft incorporated thermal characteristics specifically designed for cold water. Water and air temperatures varied from 0 to +2 C and -5 to +4 C respectively. All subjects were removed upon reaching subjective tolerance. The results showed that none of the clothing assemblies was adequate to maintain a person in comfort even with dry boarding. No significant biochemical shifts in the blood or urine were found. The TUL raft was found to be superior in its thermal characteristics and afforded better subject protection. General tolerance for cold water immersion, wet and dry, and cold water raft exposures are depicted graphically, based on previously reported data.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; May 1972
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  • 124
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    Interval scanning photomicrography of microbial cell populations. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: A single reproducible area of the preparation in a fixed focal plane is photographically scanned at intervals during incubation. The procedure can be used for evaluating the aerobic or anaerobic growth of many microbial cells simultaneously within a population. In addition, the microscope is not restricted to the viewing of any one microculture preparation, since the slide cultures are incubated separately from the microscope.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Applied Microbiology; 23; Jan. 197
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  • 125
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    EEG monitoring of a free-swimming diver at a working depth of 15 meters. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Feasibility has been shown for underwater transmission of physiological signals, using frequency modulation of carriers transmitted by return-current-density methods, as part of a personal biotelemetry system. In the prototype system, a standard IRIG subcarrier frequency (2300 Hz) was used. Power requirements, antenna design, and signal attenuation are compatible with free-ranging diving activity at distances up to 15 meters from the receiver. Extrapolation from this study and further developments are expected to substantially increase the range. Advantages of this system include subcarrier compatibility with standard IRIG demodulators using channels 1 through 10, the absence of highly specialized antenna requirements, and reasonable attenuation characteristics for transmission through the turbidity of typical seawater. Moreover, the system would not appear to be depth limited, and to be compatible with use of high-powered transponders of the same type for long-distance transmission, with or without further encoding.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; Apr. 197
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  • 126
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    Effects of bedrest and centrifugation of humans on serum thyroid function tests. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Changes in plasma volume and protein concentration have been reported when normal subjects are bedrested or centrifuged. Since thyroid hormones are transported by specific plasma proteins, each of these procedures could be expected to change plasma levels of these hormones. In this study centrifugation of normal healthy human subjects produced an increased concentration of total protein and albumin. When these same subjects were bedrested for six days, no change in total protein, albumin or thyroxine binding globulin were found although there was an eight per cent decrease in plasma volume. Centrifugation and, to a lesser extent, bedrest produced changes in serum T-4 levels and the T-3 test results. The direction of these changes (decreased % T-3 values and increased T-4 levels) indicate that these two situations produce an increased plasma concentration of thyroxine binding sites.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; Apr. 197
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  • 127
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    Electroencephalographic and behavioral effects of nocturnally occurring jet aircraft sounds. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: The present research presents data relative to the objective evaluation of the effects of a specific complex auditory stimulus presented during sleep. The auditory stimulus was a jet aircraft flyover of approximately 20-sec duration and a peak intensity level of approximately 80 dB (A). Our specific interests were in terms of how this stimulus would interact with the frequency pattern of the sleeping EEG and whether there would be any carry-over effects of the nocturnally presented stimuli to the waking state. The results indicated that the physiological effects (changes in electroencephalographic activity) produced by the jet aircraft stimuli outlasted the physical presence of the auditory stimuli by a considerable degree. Further, it was possible to note both behavioral and electroencephalographic changes during waking performances subsequent to nights disturbed by the jet aircraft flyovers which were not apparent during performances subsequent to undisturbed nights.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; Apr. 197
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  • 128
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    Skin and muscle components of forearm blood flow in directly heated resting man. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Changes in forearm muscle blood flow (FMBF) during direct whole-body heating were measured in 17 normal subjects using three different methods. We conclude that FMBF is not increased by direct whole-body heating. Since renal and splanchnic blood flow fall 30% under these conditions, maximal total skin blood flow in 12 previously studied subjects can be estimated from the rise in cardiac output to be 7.6 L/min (3.0-11.1 L/min).
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Journal of Applied Physiology; 32; Apr. 197
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  • 129
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    Respiratory weight losses during exercise. (1972)
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    Publikationsdatum: 2019-06-27
    Beschreibung: Evaporative water loss from the respiratory tract was determined over a wide range of exercise. The absolute humidity of the expired air was the same at all levels of exercise and equal to that measured at rest. The rate of respiratory water loss during exercise was found to be 0.019 of the oxygen uptake times (44 minus water vapor pressure). The rate of weight loss during exercise due to CO2-O2 exchange was calculated. For exercise at oxygen consumption rates exceeding 1.5 L/min in a dry environment with a water vapor pressure of 10 mm Hg, the total rate of weight loss via the respiratory tract is on the order of 2-5 g/min.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Journal of Applied Physiology; 32; Apr. 197
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  • 130
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    Densitography - A new method for evaluation of cardiac performance of rest and during exercise. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: The validity of the densitographic curves obtained from the pinna of the ear for measuring the systolic intervals has been investigated in 28 subjects. This technique is found to permit the performance of noninvasive physiologic studies during physical activities, exercise tests, flight conditions, and probably long-term monitoring of critically ill patients. Densitographic curves constitute an excellent substitute by which to measure time-base intervals of the cardiac cycle when the carotid pulse tracing is not available.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: American Heart Journal; 83; Apr. 197
    Format: text
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  • 131
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    Component duration and relative response rates in multiple schedules. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Pigeons were trained on a multiple variable-interval 30-sec, variable interval 90-sec schedule with each component presented alternately for an equal duration. This duration of exposure was varied from 5 to 300 sec. The rate of response in the variable-interval 30-sec component relative to the rate of response in the variable-interval 90-sec component was studied. Results are plotted and discussed.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Journal of the Experimental Analysis of Behavior; 17; Jan. 197
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  • 132
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    Inflow as a source of extraretinal eye position information. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Experiments were performed which show that subjects can reliably report when, and in which direction, loads were applied to their eyes in total darkness, which indicates that they were aware of inflow eye position information. Awareness of the inflow signal was not disrupted when the eyelids and conjunctiva were anesthetized and the eyelids were retracted from all possible contact with the scleral contact lens. Furthermore, the subjects maintained eye position when loads were applied to the eye in total darkness, showing that this inflow information can be used for extraretinal oculomotor control.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Vision Research; 12; Feb. 197
    Format: text
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  • 133
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    Design of a specialized computer for on-line monitoring of cardiac stroke volume (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The design of a specialized analog computer for on-line determination of cardiac stroke volume by means of a modified version of the pressure pulse contour method is presented. The design consists of an analog circuit for computation and a timing circuit for detecting necessary events on the pressure waveform. Readouts of arterial pressures, systolic duration, heart rate, percent change in stroke volume, and percent change in cardiac output are provided for monitoring cardiac patients. Laboratory results showed that computational accuracy was within 3 percent, while animal experiments verified the operational capability of the computer. Patient safety considerations are also discussed.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TN-D-6658 , E-6376
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  • 134
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    General purpose bioamplifier study (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Based on known inputs and outputs, a set of specifications were developed for the major characteristics of a general purpose amplifier for use in the Integrated Medical, Behaviorial, and Laboratory Measurement System.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-115506 , DOC-70SD5414-PHASE-B4
    Format: application/pdf
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  • 135
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    University role in astronaut life support systems: Extravehicular guidance and stabilization in space (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Two problem areas are reviewed: (1) the nature of and approach to the EVA mission and (2) the guidance and stabilization required of such a mission. The report indicates several broad areas in which additional research is needed to provide an advance to the state-of-the-art. Moreover, the research problems cited were chosen from among many as those most amenable to research and study in the university environment.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-1919
    Format: application/pdf
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  • 136
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    Cybernetic integration of experiments into the CVT system (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The research to develop a cybernetic model which is a static aggregate of the existing interaction in the CVT is reported. The experiments involving man considered necessary for cybernetic integration are listed. Topics discussed include: the modeling dynamic interactions for two competing systems; aspects of man-man integration in the CVT; and establishment of optimum number of research crew for the CVT.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-124150
    Format: application/pdf
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  • 137
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    Mechanisms of deterioration of nutrients phase 1 (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Experimental methods are studied by which freeze-dried foods of improved quality are produced. Considered are: (1) Factors effecting the loss of butanol from frozen aqueous food solutions during storage; (2) a freeze-drying microscope system for observing solidification processes in organic mixtures and aqueous inorganic salt solutions; (3) browning of high quality freeze-dried foods with minimal organoleptic and nutritional detoriation; (4) retention of PVP-n-propanol in freeze-dried food models; and (5) effects of freezing rate and sucrose immersion on taste and texture of freeze-dried apple slices.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128915
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  • 138
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    Regenerative particulate filter development (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Development, design, and fabrication of a prototype filter regeneration unit for regenerating clean fluid particle filter elements by using a backflush/jet impingement technique are reported. Development tests were also conducted on a vortex particle separator designed for use in zero gravity environment. A maintainable filter was designed, fabricated and tested that allows filter element replacement without any leakage or spillage of system fluid. Also described are spacecraft fluid system design and filter maintenance techniques with respect to inflight maintenance for the space shuttle and space station.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-115505 , MCR-72-40
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  • 139
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    Upgrading and extended testing of the MSC integrated water and waste management hardware (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The results are presented of upgrading and testing an integrated water and waste management system, which uses the compression distillation, reverse osmosis, adsorption filtration and ion-exchange processes to recover potable water from urine, flush water and used wash water. Also included is the development of techniques for extending the useful biological life of biological filters, activated carbon filters and ion-exchange resins to at least 30 days, and presterilizing ion-exchange resins so that sterile water can be recovered from waste water. A wide variety of reverse osmosos materials, surfactants and germicides were experimentally evaluated to determine the best combination for a wash water subsystem. Full-scale module tests with real wash water demonstrated that surface fouling is a major problem.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128878 , CHEMTRIC-FR-3084
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  • 140
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    Inflight Blood Collection System (IBCS) verification plan (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The verification program for the Inflight Blood Collection System (IBCS) is reported. Specific tests and methods used to verify the IBCS are included.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128645 , MDC-E0653
    Format: application/pdf
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  • 141
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    Visually directed pointing as a function of target distance, direction, and available cues. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: In pointing at visual targets without sight of the hand, large errors occur. There is a tendency to overreach targets, and this tendency is much greater (about 25 cm) when convergence is the only cue to distance than when there are many cues (2 to 11 cm). Angular errors of up to 10 deg also occur. These tend to be to the side opposite the sighting eye, when the favored hand is used. The variance of the pointing response with convergence alone is reduced by approximately half with the introduction of several spatial cues. These results are interpreted as indicating that, for a target within the reach of the arm and with convergence alone as a cue, the depth signal produced by the visual system corresponds to a greater distance than that produced when many cues are available. The results are also consistent with the hypothesis that perceived direction tends to approximate direction from the sighting eye.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Perception and Psychophysics; 12; 3, Se; Sept
    Format: text
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  • 142
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    Effects of the space flight environment on man's immune system. I - Serum proteins and immunoglobulins. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; Aug. 197
    Format: text
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  • 143
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    Simulation of a steady-state integrated human thermal system. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: The mathematical model of an integrated human thermal system is formulated. The system consists of an external thermal regulation device on the human body. The purpose of the device (a network of cooling tubes held in contact with the surface of the skin) is to maintain the human body in a state of thermoneutrality. The device is controlled by varying the inlet coolant temperature and coolant mass flow rate. The differential equations of the model are approximated by a set of algebraic equations which result from the application of the explicit forward finite difference method to the differential equations. The integrated human thermal system is simulated for a variety of combinations of the inlet coolant temperature, coolant mass flow rate, and metabolic rates. Two specific cases are considered: (1) the external thermal regulation device is placed only on the head and (2) the devices are placed on the head and the torso. The results of the simulation indicate that when the human body is exposed to hot environment, thermoneutrality can be attained by localized cooling if the operating variables of the external regulation device(s) are properly controlled.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Computers in Biology and Medicine; 2; Feb. 197
    Format: text
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  • 144
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    Motivation in vigilance - Effects of self-evaluation and experimenter-controlled feedback. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: Vigilance experiments have been performed to study the relative efficiency of feedback operations in enhancing vigilance performance. Two feedback operations were compared - i.e., experimenter-controlled feedback in the form of knowledge of results (KR) regarding response times to signal detections, and subject-controlled feedback in the form of self-evaluation (SE) of response times to signal detections. The subjects responded to the aperiodic offset of a visual signal during a 1-hr vigil. Both feedback operations were found to enhance performance efficiency: subjects in the KR and SE conditions had faster response times than controls receiving no evaluative feedback. Moreover, the data of the KR and SE groups did not differ significantly from each other. The results are discussed in terms of the hypothesis that self-evaluation is a critical factor underlying the incentive value of KR in vigilance tasks.
    Schlagwort(e): BIOTECHNOLOGY
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  • 145
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    Semiclosed-circuit atmosphere control in a portable recompression chamber (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: A small portable recompression chamber is described that can be used both to treat a diver for decompression sickness or to transport him to a larger chamber complex. The device can be operated in either open circuit or semiclosed circuit atmospheres, permits two way conversation between patient and attendant, and uses an air injector for circulation of the chamber atmosphere.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA. Ames Res. Center Second Conf. on Portable Life Support Systems p167-182 (SEE N72-27106 18-05)
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  • 146
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    Development of a sorber trace contaminant control system including pre- and post-sorbers for a catalytic oxidizer (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: A general methodology was developed for spacecraft contaminant control system design. Elements considered for contaminant control were catalytic oxidation with isotope or electrical heat and pre- and post-sorbers, charcoal with regeneration and non-regeneration, and reactive constituents. A technique is described for sizing a charcoal bed for a multiple contaminant load.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-2027
    Format: application/pdf
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  • 147
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    Investigations to improve carbon dioxide control with amine and molecular sieve type sorbers (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The optimization trends and operating parameters of an integral molecular sieve bed heat exchanger were investigated. The optimum combination of substrate and coating for the HS-B porous polymer was determined based on the CO2 dynamic capacity in the presence of water vapor. Full size HS-B canister performance was evaluated. An Amine CO2 Concentrator utilizing IR-45 sorber material and available Manned Orbiting Laboratory hardware was designed, fabricated and tested for use as an experiment in the NASA 90-day space simulator test of 1970. It supported four men in the simulator for 71 days out of the 90-day test duration.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-112021 , SVHSER-5966
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  • 148
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    Development of a category 2 approach system model (1972)
    In:  CASI
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    Publikationsdatum: 2019-06-27
    Beschreibung: An analytical model is presented which provides, as its primary output, the probability of a successful Category II approach. Typical applications are included using several example systems (manual and automatic) which are subjected to random gusts and deterministic wind shear. The primary purpose of the approach system model is to establish a structure containing the system elements, command inputs, disturbances, and their interactions in an analytical framework so that the relative effects of changes in the various system elements on precision of control and available margins of safety can be estimated. The model is intended to provide insight for the design and integration of suitable autopilot, display, and navigation elements; and to assess the interaction of such elements with the pilot/copilot.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-2022 , TR-182-2
    Format: application/pdf
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  • 149
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    Development of Skylab experiment T020 employing a foot controlled maneuvering unit (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: A review of the plans and preparations is presented for Skylab experiment T020, entitled Foot-Controlled Maneuvering Unit (FCMU). The FCMU is an experimental system intended to explore the use of simple astronaut maneuvering devices in the zero-gravity environment of space. This review also includes discussions of the FCMU concept and experiment hardware systems, as well as supporting experiment definition and development research studies conducted with the aid of zero-gravity simulators.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TN-D-6674 , L-8045
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  • 150
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    Biological instrumentation for the Viking 1975 mission to Mars. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-27
    Beschreibung: A brief introduction is given on why Mars is of interest from a biological point of view, along with an overview of the Viking 1975 mission. Details are given about the four biology instruments aboard the spacecraft and the experiments for which they are to be used. These are: the carbon assimilation experiment to determine whether the soil is biologically active; the label release experiment to detect metabolic activity by the release of radioactive CO2 from C-14 labelled simple organic substrates; the gas exchange experiment to detect biological activity by repeated gas chromatography analysis of soil samples; and the light scattering experiment, where increase of scattering and decrease of light transmission would indicate the growth of organisms. Examples are given of data obtained with terrestrial soils in these experiments.
    Schlagwort(e): BIOTECHNOLOGY
    Format: text
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  • 151
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    Human performance capabilities in a simulated space station-like environment. 1: Fixed beam luminance and location (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The effects of a fixed, intense, one-foot diameter beam of simulated sunlight imaged within the field of view, upon responses to a battery of visual, body balance and stability, eye-hand coordination, and mental tests were studied. Each subject's electrocardiogram and electro-oculograms (vertical and horizontal) were recorded throughout each two-hour testing period within the space-station-like environment. It is possible to say that both subjects adapted to the brightly illuminated white panels in approximately 30 seconds after their first exposure each day and thereafter did not experience ocular fatigue, eye strain, or other kinds of disturbances as a result of these viewing conditions.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TM-X-62101
    Format: application/pdf
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  • 152
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    Program operational summary: Operational 90 day manned test of a regenerative life support system (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: An operational 90-day manned test of a regenerative life support system was successfully completed. This test was performed with a crew of four carefully selected and trained men in a space station simulator (SSS) which had a two gas atmosphere maintained at a total pressure of 68.9, 10 psia, and composed of oxygen at a partial pressure of 3.05 psia with nitrogen as the diluent. The test was planned to provide data on regenerative life support subsystems and on integrated system operations in a closed ecology, similar to that of a space station. All crew equipment and expendables were stored onboard at the start of the mission to eliminate the need for pass-in operations. The significant accomplishments of the test, some of the pertinent test results, some of the problem areas, and conclusions are presented.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-1835 , MDC-G2282
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  • 153
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    Development, fabrication and testing of a magnetically connected plastic vacuum probe surface sampler (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The sampler utilizes permanent magnets and soft metal pole pieces to connect the cone/filter assembly to the sampling head and vacuum supply. The cone/filter assembly is packaged in a plastic container and presterilized so that the need for any human contact during the sampling procedure is completely eliminated. Microbiological tests have demonstrated that the sampling efficiency is not affected by the magnetic coupling apparatus and that the probe appears to function as efficiently as the conventional plastic and Sandia vacuum probes.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-1947
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  • 154
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    Effects of simulated artificial gravity on human performance (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The ability of test subjects to perform operational type tasks was evaluated at rotational rates to 6 rpm and radii to 78 ft (24 m). The tasks included fine motor activity, mental operations, postural equilibrium, cargo handling, radial and tangential locomotion. Performance data indicate that 6 rpm presents a physiological limit at radii to 75 ft (23 m). Radial locomotion was not found to produce excessive adverse stimuli, and tangential locomotion was readily accomplished at walking rates of 2 of 4.8 ft/s (.6 to 1.4 m/s). The absence of vision dramatically reduced an individual's postural equilibrium during rotation. The use of selected anti-motion pharmaceuticals had, generally, a positive effect upon psychomotor performance at 6 rpm, but did not prove to be a panacea for the adverse effects of rotation at this rate.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-2129
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  • 155
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    Food and nutrition studies for Apollo 16 (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: A study has been conducted on nutrient intake and absorption during the Apollo 16 mission. Results indicate that inflight intakes of all essential nutrients were adequate and that absorption of these materials occurred normally.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TM-X-58096 , MSC-07195
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  • 156
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    Test results of six-month test of two water electrolysis systems (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The two water electrolysis systems used in the NASA space station simulation 90-day manned test of a regenerative life support system were refurbished as required and subjected to 26-weeks of testing. The two electrolysis units are both promising systems for oxygen and hydrogen generation and both needed extensive long-term testing to evaluate the performance of the respective cell design and provide guidance for further development. Testing was conducted to evaluate performance in terms of current, pressure, variable oxygen demands, and orbital simulation. An automatic monitoring system was used to record, monitor and printout performance data at one minute, ten minute or one-hour intervals. Performance data is presented for each day of system operation for each module used during the day. Failures are analyzed, remedial action taken to eliminate problems is discussed and recommendations for redesign for future space applications are stated.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128629 , MDC-G3019 , MSC-07382
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  • 157
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    Spacecraft sanitation agent development (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The development of an effective sanitizing agent that is compatible with the spacecraft environment and the human occupant is discussed. Experimental results show that two sanitation agents must be used to satisfy mission requirements: one agent for personal hygiene and one for equipment maintenance. It was also recommended that a water rinse be used with the agents for best results, and that consideration be given to using the agents pressure packed or in aerosol formulations.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128591 , MS142Y0004
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  • 158
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    Theory of antimotion sickness drug mechanisms. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-06-27
    Beschreibung: The results of a series of antimotion sickness drug evaluations indicates that drugs with central anticholinergic actions and drugs that increase central sympathetic activity are effective against motion sickness. The combination of these actions produces a synergistic effect against motion sickness. The effect of these medications on central acetylcholine or on norepinephrine could alter a balance between the neurons in the vestibular and reticular areas which influence motion sickness and also sympathetic and parasympathetic reactions. It is suggested that this could be their mechanism of action in preventing motion sickness.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Aerospace Medicine; 43; Mar. 197
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  • 159
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    Extraterrestrial consumables production and utilization (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Potential oxygen requirements for lunar-surface, lunar-orbit, and planetary missions are presented with emphasis on: (1) emergency survival of the crew, (2) provision of energy consumables for vehicles, and (3) nondependency on an earth supply of oxygen. Although many extraterrestrial resource processes are analytically feasible, this study has considered hydrogen and fluorine processing concepts to obtain oxygen or water (or both). The results are quite encouraging and are extrapolatable to other processes. Preliminary mission planning and sequencing analysis has enabled the programmatic evaluation of using lunar-derived oxygen relative to transportation cost as a function of vehicle delivery and operational capability.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TM-X-58087 , MSC-06816
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  • 160
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    Design and development of a prototype wet oxidation system for the reclamation of water and the disposition of waste residues onboard space vehicles (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Laboratory investigations to define optimum process conditions for oxidation of fecal/urine slurries were conducted in a one-liter batch reactor. The results of these tests formed the basis for the design, fabrication, and testing of an initial prototype system, including a 100-hour design verification test. Areas of further development were identified during this test. Development of a high pressure slurry pump, materials corrosion studies, oxygen supply trade studies, comparison of salt removal water recovery devices, ammonia removal investigation, development of a solids grinder, reactor design studies and bearing life tests, and development of shutoff valves and a back pressure regulator were undertaken. The development work has progressed to the point where a prototype system suitable for manned chamber testing can be fabricated and tested with a high degree of confidence of success.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-112151
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  • 161
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    Biomedical ground lead system (1972)
    In:  CASI
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    Publikationsdatum: 2019-06-27
    Beschreibung: The design and verification tests for the biomedical ground lead system of Apollo biomedical monitors are presented. Major efforts were made to provide a low impedance path to ground, reduce noise and artifact of ECG signals, and limit the current flowing in the ground electrode of the system.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128536 , SR-72-1080
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  • 162
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    Operation and maintenance, fire rescue air-pack. Volume 2: Communications (1972)
    In:  CASI
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    Publikationsdatum: 2019-06-27
    Beschreibung: The operation and maintenance procedures are described for the development model of the fire rescue air pack (FRAP) voice amplifier assembly, including the battery charger. Operational instructions include a general description of the assembly, specifications, and installation and operation. Maintenance instructions include theory of operation, preventive maintenance, repair, adjustment, and a parts list. The FRAP is intended to permit fire rescue personnel to enter a smoke-filled, toxic or oxygen depleted environment carrying their own source of breathing air. The voice amplifier assembly permits the wearer to communicate by voice with other persons in the vicinity. The battery charger assembly provides a means of keeping the amplifier batteries fully charged.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-68614 , KSC-TM-626-VOL-2
    Format: application/pdf
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  • 163
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    Pressure ramp programmer; IMBLMS Phase B4 Additional Tasks: Task 3.0 pressure ramp programmer (1972)
    In:  CASI
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    Publikationsdatum: 2019-06-27
    Beschreibung: A pressure ramp programmer model was designed, fabricated and tested. This model, in conjunction with an automatic blood pressure monitor, automatically controls the pressure in the blood pressure monitor arterial cuff. The cuff pressurization cycle is designed to maximize accuracy and repeatability of blood pressure measurements. The key feature of this automatic cycle is rapid blood pressure cuff bleed down from an initial setting until systolic (diastolic) pressure is encountered followed by a short repressurization and slow bleed, long enough to permit accurate systolic (diastolic) pressure determination. The system includes a pressure reservoir which bleeds the cuff through a precision needle valve; a solenoid valve which permits rapid pressurization from the reservoir; and a pressure sensor which provides information for bleed rate and set point controls. Korotkoff sound signals from a microphone in the blood pressure cuff (not part of the system) provide decision information to the digital control system. The system completed a series of engineering tests using simulated Korotkoff sound inputs. The system performed successfully in all cases and was stable over an extended period of time.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-115508 , DOC-70SD5414
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  • 164
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    An electronic circuit that detects left ventricular ejection events by processing the arterial pressure waveform (1972)
    In:  CASI
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    Publikationsdatum: 2019-06-27
    Beschreibung: An electronic circuit for processing arterial blood pressure waveform signals is described. The circuit detects blood pressure as the heart pumps blood through the aortic valve and the pressure distribution caused by aortic valve closure. From these measurements, timing signals for use in measuring the left ventricular ejection time is determined, and signals are provided for computer monitoring of the cardiovascular system. Illustrations are given of the circuit and pressure waveforms.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TM-X-68001
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  • 165
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    The effect of modifying response and performance feedback parameters on the CNV in humans (1972)
    In:  CASI
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    Publikationsdatum: 2019-06-27
    Beschreibung: The effect on the CNV of sustained and delayed motor response with the dominant and nondominant hand in the presence and absence of visual performance feedback, was studied in 15 male adults. Monopolar scalp recordings were obtained at Fz, Cz, Pz, and bilaterally over the motor hand area. Results indicated that the magnitude of the CNV was greater in the delayed than sustained response task, greater in the presence than absence of feedback, and greater over the motor hand area contralateral to movement. Frontal CNV habituated in the sustained, but not the delayed response task, suggested that frontal negative variations in the former case signify an orienting response to novelty or uncertainty. The absence of habituation in the delay condition was interpreted in terms of the motor inhibitory function of frontal association cortex. Performance feedback appeared to enhance CNV indirectly by increasing the motivation of subjects. A multiprocess conception of CNV was proposed in which vortex-negative slow potentials reflect a multiplicity of psychophysiological processes occurring at a variety of cortical and subcortical locations in the brain preparatory to a motor or mental action.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TM-X-62097
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  • 166
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    Conversion of cardiac performance data in analog form for digital computer entry (1972)
    In:  CASI
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    Publikationsdatum: 2019-06-27
    Beschreibung: A system is presented which will reduce analog cardiac performance data and convert the results to digital form for direct entry into a commercial time-shared computer. Circuits are discussed which perform the measurement and digital conversion of instantaneous systolic and diastolic parameters from the analog blood pressure waveform. Digital averaging over a selected number of heart cycles is performed on these measurements, as well as those of flow and heart rate. The determination of average cardiac output and peripheral resistance, including trends, is the end result after processing by digital computer.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TM-X-2519 , E-6731
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  • 167
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    Thin-film temperature sensor. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: A new device has been developed for sensing small and rapid temperature changes accompanying biochemical reactions. The active element consists of an evaporated thin-film capacitor having a relatively strong temperature dependence. This dependence is derived from electron trapping effects in the thin amorphous dielectric film. A voltage output of at least 50 mV/deg can be obtained prior to amplification by using a resonant ac bridge circuit operating at 100 kHz. The corresponding noise output for a 10 kHz bandwidth can with an optimum circuit be as low as 4 microvolts. Therefore, the minimum detectable temperature change would be 80 microdegrees at 10 kHz. Rapid thermal response is assured by supporting the thin-film capacitor on a thin anodic tantalum oxide film suspended across an electrolytically etched window in a tantalum foil.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Symposium on Temperature; Jun 21, 1971 - Jun 24, 1971; Washington, DC
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  • 168
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    Telemetered EEG and neuronal spike activity in olfactory bulb and amygdala in free moving rabbits. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: International Symposium on Biotelemetry; May 05, 1971 - May 08, 1971; Nijmegen; Netherlands
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  • 169
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    A multichannel electromagnetic flowmeter telemetry system. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: An eight-channel biomedical telemetry system provides four channels of blood flow measurements in addition to blood-pressure and EKG data. Emphasis is placed on the amplifiers and signal conditioning circuitry required for interfacing of the electromagnetic flow transducers with the transmission and modulation subsystems. The large number of data channels permits measurement of flow distribution as well as total cardiac output. The batteries and electronics for four channels (blood flow) weigh about 500 g and have a volume of 250 cu cm.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: International Symposium on Biotelemetry; May 05, 1971 - May 08, 1971; Nijmegen; Netherlands
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  • 170
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    Design principles for contamination abatement in scientific satellites. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: It is shown that deposition of contamination films on satellite optics can be controlled by the following means: isolating critical optical surfaces from the rest of the spacecraft; avoiding or minimizing the use of nonmetallic material, particularly near or in line of sight of optical surfaces; avoiding materials with high vapor pressures; subjecting materials to vacuum baking prior to use, to drive off the volatile outgassing products; keeping the critical surfaces at temperatures above the ambient; avoiding elevated operational temperatures for nonmetallic materials; paying special attention to optics exposed to intense UV-, X-ray, or particular radiation; avoiding water-vapor sources; and directing RCS plumes away from critical surfaces. Methods of controlling particulate contaminants are also proposed.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: International Astronautical Congress; Oct 08, 1972 - Oct 15, 1972; Vienna; Austria
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  • 171
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    Degradation of learned skills: Effectiveness of practice methods on visual approach and landing skill retention (1972)
    In:  CASI
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    Publikationsdatum: 2019-07-13
    Beschreibung: Flight control and procedural task skill degradation, and the effectiveness of retraining methods were evaluated for a simulated space vehicle approach and landing under instrument and visual flight conditions. Fifteen experienced pilots were trained and then tested after 4 months either without the benefits of practice or with static rehearsal, dynamic rehearsal or with dynamic warmup practice. Performance on both the flight control and procedure tasks degraded significantly after 4 months. The rehearsal methods effectively countered procedure task skill degradation, while dynamic rehearsal or a combination of static rehearsal and dynamic warmup practice was required for the flight control tasks. The quality of the retraining methods appeared to be primarily dependent on the efficiency of visual cue reinforcement.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128912 , D180-15082-1
    Format: application/pdf
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  • 172
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    Habitability study shuttle orbiter (1972)
    In:  CASI
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    Publikationsdatum: 2019-07-13
    Beschreibung: Studies of the habitability of the space shuttle orbiter are briefly summarized. Selected illustrations and descriptions are presented for: crew compartment, hygiene facilities, food system and galley, and storage systems.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128863
    Format: application/pdf
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  • 173
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    A urine volume measurement system (1972)
    In:  CASI
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    Publikationsdatum: 2019-07-13
    Beschreibung: An improved urine volume measurement system for use in the unusual environment of manned space flight is reported. The system utilizes a low time-constant thermal flowmeter. The time integral of the transient response of the flowmeter gives the urine volume during a void as it occurs. In addition, the two phase flows through the flowmeter present no problem. Developments of the thermal flowmeter and a verification of the predicted performance characteristics are summarized.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128726 , GLR-113
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  • 174
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    Southwest Research Institute assistance to NASA in biomedical areas of the technology utilization program (1972)
    In:  CASI
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    Publikationsdatum: 2019-07-13
    Beschreibung: The problem statements presented relate mostly to research on prosthetic equipment and means of attaching biomedical and electronic devices to the human body. A patent application for a reliable switching element in a patient assist control units is also described.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-130022
    Format: application/pdf
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  • 175
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    A method for defining down-wind evacuation areas for transportation accidents involving toxic propellant spills (1972)
    In:  CASI
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    Publikationsdatum: 2019-07-13
    Beschreibung: Evacuation areas for accidental spills of toxic propellants along rail and highway shipping routes are defined to help local authorities reduce risks to people from excessive vapor concentrations. These criteria along with other emergency information are shown in propellant spill cards. The evacuation areas are based on current best estimates of propellant evaporation rates from various areas of spill puddles. These rates are used together with a continuous point-source, bi-normal model of plume dispersion. The rate at which the toxic plume disperses is based on a neutral atmospheric condition. This condition, which results in slow plume dispersion, represents the widest range of weather parameters which could occur during the day and nighttime periods. Evacuation areas are defined by the ground level boundaries of the plume within which the concentrations exceed the toxic Threshold Limit Value (TLV) or in some cases the Emergency Exposure Limit (EEL).
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-TM-X-68188 , E-7320 , 1972 joint Army Navy NASA AF (JANNAF) Prop. Meeting; Nov 27, 1972 - Nov 29, 1972; New Orleans, LA; United States
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  • 176
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    Assistance to NASA in biomedical areas of the technology utilization program (1972)
    In:  CASI
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    Publikationsdatum: 2019-07-13
    Beschreibung: The activities of the applications are reported for November 1972. Summaries are included of problems, problem statements, searches, application engineering, and technology application.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-129998
    Format: application/pdf
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  • 177
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    Physiological responses to environmental factors related to space flight (1972)
    In:  CASI
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    Publikationsdatum: 2019-07-13
    Beschreibung: The research is reported for establishing physiological base line data, and for developing procedures and instrumentation necessary for the automatic measurement of hemodynamic and metabolic parameters. The work in the following areas is discussed: biochemistry, bioinstrumentation, nutrition, physiology, experimental surgery, and animal colony.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-129518 , REPT-21
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  • 178
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    Degradation of learned skills. Effectiveness of practice methods on simulated space flight skill retention (1972)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Manual flight control and emergency procedure task skill degradation was evaluated after time intervals of from 1 to 6 months. The tasks were associated with a simulated launch through the orbit insertion flight phase of a space vehicle. The results showed that acceptable flight control performance was retained for 2 months, rapidly deteriorating thereafter by a factor of 1.7 to 3.1 depending on the performance measure used. Procedural task performance showed unacceptable degradation after only 1 month, and exceeded an order of magnitude after 4 months. The effectiveness of static rehearsal (checklists and briefings) and dynamic warmup (simulator practice) retraining methods were compared for the two tasks. Static rehearsal effectively countered procedural skill degradation, while some combination of dynamic warmup appeared necessary for flight control skill retention. It was apparent that these differences between methods were not solely a function of task type or retraining method, but were a function of the performance measures used for each task.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: NASA-CR-128612 , D180-15081-1
    Format: application/pdf
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  • 179
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    The Space Station Prototype Program - The development of a regenerative life support system for extended-duration missions. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: Design concepts and test philosophies which may contribute to the development of a low-cost maintainable environmental control/life support system are examined. It is shown that the concept of producing flight prototype equipment during a developmental program can reduce the eventual cost of a flight system by incorporating realistic flight-type design requirements without imposing exacting design features and stringent controls. A flight prototype design is one that can be converted readily into an actual flight design without any conceptual change. Modularity of subsystems provides the system and the program a degree of flexibility relative to the eventual vehicle configuration and technological improvements.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: International Astronautical Federation, International Astronautical Congress; Oct 08, 1972 - Oct 15, 1972; Vienna; Austria
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  • 180
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    Regeneration of oxygen from carbon dioxide and water. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: In a closed ecological system it is necessary to reclaim most of the oxygen required for breathing from respired carbon dioxide and the remainder from waste water. One of the advanced physicochemical systems being developed for generating oxygen in manned spacecraft is the solid electrolyte-electrolysis system. The solid electrolyte system consists of two basic units, an electrolyzer and a carbon monoxide disproportionator. The electrolyzer can reclaim oxygen from both carbon dioxide and water. Electrolyzer preparation and assembly are discussed together with questions of reactor design and electrolyzer performance data.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: International Astronautical Federation, International Astronautical Congress; Oct 08, 1972 - Oct 15, 1972; Vienna; Austria
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  • 181
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    Progress in regenerative life support systems for a lunar laboratory. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: Research and development work for application of Environmental and Thermal Control/Life Support System (ETC/LSS) on a lunar base mission is reviewed, covering lunar mission requirements and constraints, a Lunar Base ETC/LSS reliability assessment, food regeneration, the water and waste system, the atmosphere regeneration subsystem, and atmosphere contaminant control. The establishment of detailed system design criteria for the Lunar Surface Base LSS is considered to be premature at this phase of the project. Some recommendations are given instead for guidance in further R & D efforts.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: International Astronautical Federation, International Astronautical Congress; Oct 08, 1972 - Oct 15, 1972; Vienna; Austria
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  • 182
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    Application of planetary quarantine methodology and spacecraft sterilization technology to improved health care delivery. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: In 1969 the Jet Propulsion Laboratory undertook an investigation to determine which of its space-derived capabilities could make significant contributions to the improvement of health care delivery in the U.S. The area of planetary quarantine was identified as one of high relevance. Two studies were conducted in this connection. The first study, which could contribute to infection reduction and control, was concerned with conversion of infection implicated complex, nonheat sterilizable equipment to dry heat, sterilizable equipment by changes in design and materials of construction. The second study area related to hospital acquired infection is clean room technology. A definite investigation has been performed to demonstrate and statistically evaluate performance under controlled conditions.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: International Astronautical Federation, International Astronautical Congress; Oct 08, 1972 - Oct 15, 1972; Vienna; Austria
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  • 183
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    Response of a seat-passenger system to impulsive loading. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: This paper presents a summary of a study of the dynamic response of an aircraft seat-passenger system to impulsive loading typical of aircraft crash situations. A brief description of the computer model SIMULA is presented, and selected data from 305 separate cases which have been studied are discussed. Maximum system forces, displacements, velocities, and accelerations are presented as functions of velocity change, aircraft deceleration, crash pulse shape, passenger weight, and seat belt slack. Data from both single and coupled parameter studies are included. A correlation of SIMULA results with experimentally obtained data is made.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: Dynamic response of structures; Symposium; Jun 28, 1971 - Jun 29, 1971; Stanford, CA
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  • 184
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    Dry incineration of wastes for aerospace waste management systems. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-2 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
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  • 185
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    Six-month test program of two water electrolysis systems for spacecraft cabin oxygen generation. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-5 , American Society of Mechanical Engineers; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
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  • 186
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    Water and waste management subsystem design for a space station prototype. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-8 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
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  • 187
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    Extended testing of compression distillation. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: During the past eight years, the NASA Manned Spacecraft Center has supported the development of an integrated water and waste management system which includes the compression distillation process for recovering useable water from urine, urinal flush water, humidity condensate, commode flush water, and concentrated wash water. This paper describes the design of the compression distillation unit, developed for this system, and the testing performed to demonstrate its reliability and performance. In addition, this paper summarizes the work performed on pretreatment and post-treatment processes, to assure the recovery of sterile potable water from urine and treated urinal flush water.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-1 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
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  • 188
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    The Bosch process. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Beschreibung: Many previous studies have been carried out to elucidate certain aspects of the Bosch process wherein CO2 is reacted over an iron catalyst to form carbon and water at temperatures around 1100 F. These results are assembled, and with the aid of new experimental data, are used to analyze the various reactions involved. It is shown that CO2 and H2 will not usually react to deposit carbon unless water is removed in a recycle loop. The critical importance of large catalyst areas is stressed relative to catalyst pretreatment processes. It is shown that in most operating Bosch reactions, mass transfer controls the rate of reaction, and it is suggested that the carbon filaments found are the expected result of such a rate limiting process. Typical recycle gas mixtures are considered, and maximum water yields are determined from various cases. A few suggestions are made to improve Bosch reaction performance, and a number of unresolved problems are noted.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-9 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
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  • 189
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    Bosch CO2 reduction unit research and development. (1972)
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    Publikationsdatum: 2019-07-13
    Beschreibung: Development of Bosch CO2 reduction units for manned spacecraft application has been in progress for a decade. The Bosch process catalytically reacts CO2 with H2 to produce water and carbon. The water may then be electrolyzed to close the biological oxygen and process hydrogen loops. A critical problem has been to confine the reaction so that carbon does not block flow and stop the process. Reaction isolation within a replaceable catalyst cartridge has been successfully demonstrated. Objectives of the current development program are a 25% reduction in operating power, an 80% reduction in expendable weight, and minimized resupply volume.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-10 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
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  • 190
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    Development of a desiccant CO2 adsorbent tailored for shuttle application. (1972)
    In:  Other Sources
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    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-11 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 191
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    Unbekannt
    Development of a waste collection system for the space shuttle. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The development of a waste collection system to accommodate both male and female crew members for the space shuttle is discussed. The waste collection system, with emphasis on the collection and transfer of urine, is described. Human-interface requirements, zero-gravity influences and effects, and operational considerations required for total system design are discussed.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-13 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 192
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    Unbekannt
    The development of a 150,000 watt-inch variable conductance heat pipe for space vehicle thermal control. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-14 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 193
    facet.materialart.
    Unbekannt
    Comparative evaluation of environmental control and life support systems for the space shuttle orbiter. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-19 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 194
    facet.materialart.
    Unbekannt
    An automated instrument for monitoring the quality of recovered water. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-16 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 195
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    Unbekannt
    Life support system definition for a low cost shuttle launched space station. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Discussion of the tradeoffs and EC/LS definition for a low cost shuttle launched space station to be launched in the late 1970s for use as a long-term manned scientific laboratory. The space station consists of 14-ft-diam modules, clustered together to support a six-man crew at the initial space station (ISS) level and a 12-man crew at the growth space station (GSS) level. Key design guidelines specify low initial cost and low total program cost and require two separate pressurized habitable compartments with independent lift support capability. The methodology used to select the EC/LS design consisted of systematically reducing quantitative parameters to a common denominator of cost. This approach eliminates many of the inconsistencies that can occur in such decision making. The EC/LS system selected is a partially closed system which recovers urine, condensate, and wash water and concentrates crew expired CO2 for use in a low thrust resistojet propulsion system.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-17 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 196
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    Unbekannt
    RAM environment control and life support subsystem. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The Research and Application Modules (RAMs) are shuttle payloads designed to provide economical manned facilities for earth orbital research and development. Support of the habitable environment in the sortie class RAMs can be accomplished by an independent ECLSS installation or by integration with the shuttle ECLSS. The RAM study evaluated advantages and disadvantages of various degrees of the two alternative installations. Selection of the optimum subsystem was made from an overall shuttle/RAM standpoint. These trade studies are presented and the resulting ECLSS support concept are discussed.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-20 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 197
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    Unbekannt
    The Orbiter ETC/LSS in terms of the unique space shuttle requirements. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Consideration of factors which have a significant impact on environmental and thermal control/life support system (ETC/LSS) design. The first area involves thermal management and consideration of the tradeoffs for heat sink selection and cabin atmosphere control (since both have a major effect on ETC/LSS weight and cost). Then consideration is given to system design sensitivity to varying crew size, use of air-cooled avionics, and other factors.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-21 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 198
    facet.materialart.
    Unbekannt
    Potential applications of NASA-developed technology to problems of the environment. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The life-support mission of NASA has the same broad objectives as the national imperatives toward environmental restoration: pure air, clean water, and reuse of resources. The major difference is the vast scale of the environment, compared to the very small scale of spacecraft, even including the largest space stations now projected. For this reason, the devices developed for manned spacecraft life support will be of much less interest than the techniques that have emerged from NASA-sponsored research and development. Several immediate applications in air and water purification can be cited, and several other long-term potential applications may also be considered.
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-23 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 199
    facet.materialart.
    Unbekannt
    Design criteria for the modular space station environmental control and life support system selection. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-25 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 200
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    Unbekannt
    Multi-cycle plasma arc evaluation of oxidation inhibited carbon-carbon material for shuttle leading edges. (1972)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Schlagwort(e): BIOTECHNOLOGY
    Materialart: ASME PAPER 72-ENAV-26 , American Society of Mechanical Engineers, Environmental Control and Life Support Systems Conference; Aug 14, 1972 - Aug 16, 1972; San Francisco, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
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