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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Hypotensive effects of chlordiazepoxide, amobarbital and chlorpromazine on behaviorally induced elevated arterial blood pressure in squirrel monkey
Intact human forearms venous blood velocity measurements, using nuclear magnetic resonance techniques
Influence of pericapillary plasma on chemical exchange from blood to tissue
Blood circulation and state of physical training in athletes
Effects of positive Gy acceleration on blood oxygen saturation and pleural pressure relations in dogs breathing air and liquid fluorocarbons in whole body water immersion respirator
Blood pressure measuring system for separately recording dc and ac pressure signals of Korotkoff sounds
Enzyme reaction model of flow dilution effect on blood coagulation in vivo
Cutaneous blood flow in anesthetized pig forelimb modified by brain temperature changes
Glucose intestinal absorption, blood glucose and hematocrit in hamsters, relating physiologic modifications to pregnancy
Isotonic training effects on circulation for limb muscular strength characteristics, using peak blood flow and venous compliance measurements
Blood plasma volume decrease, red cell mass and survival measurements in aquanauts of Tektite I at prolonged habitation
Chronic hypoxia effects on blood oxygen and carbon dioxide tensions and pH changes in unanesthetized chickens at high altitude compared to sea level control
Venous and arterial blood gases in hibernating and normothermic ground squirrels, showing venous oxygen and carbon dioxide partial pressures reduction in hibernation
System is described that employs solid state circuitry to transmit visual display of patient's blood pressure. Response of sphygmomanometer cuff and microphone provide input signals. Signals and their amplitudes, from turn-on time to turn-off time, are continuously fed to data transmitter which transmits to display device.
Automatic system for noninvasive measurements of arterial blood pressure is described. System uses Korotkov sound processor logic ratios to identify Korotkov sounds. Schematic diagram of system is provided to show components and method of operation.
Sixteen monkeys trained to perform continuous and discrete-avoidance and fixed-ratio tasks with visual and auditory cues were performance-tested before, during, and after 10-day gamma-ray exposures totaling 0, 500, 750, and 1000 rads. Approximately 14 months after the performance-test exposures, surviving animals were exposed to 100-rad gamma-ray fractions at 56-day intervals to observe injury and recovery patterns of blood-forming tissues. The fixed-ratio, food-reward task performance showed a transient decline in all dose groups within 24 hours of the start of gamma-ray exposure, followed by recovery to normal food-consumption levels within 48 to 72 hours. Avoidance tasks were performed successfully by all groups during the 10-day exposure, but reaction times of the two higher dose-rate groups in which animals received 3 and 4 rads per hour or total doses of 750 and 1000 rads, respectively, were somewhat slower.
The design, fabrication, and tests of a prototype white blood cell counting system for use in the Skylab IMSS are presented. The counting system consists of a sample collection subsystem, sample dilution and fluid containment subsystem, and a cell counter. Preliminary test results show the sample collection and the dilution subsystems are functional and fulfill design goals. Results for the fluid containment subsystem show the handling bags cause counting errors due to: (1) adsorption of cells to the walls of the container, and (2) inadequate cleaning of the plastic bag material before fabrication. It was recommended that another bag material be selected.
Two methods whereby a digital computer may be used to regulate a scintiscanning process are discussed from the viewpoint of computer input-output software. The computer's function, in this case, is to govern the data acquisition and storage, and to display the results to the investigator in a meaningful manner, both during and subsequent to the scanning process. Several methods (such as three-dimensional maps, contour plots, and wall-reflection maps) have been developed by means of which the computer can graphically display the data on-line, for real-time monitoring purposes, during the scanning procedure and subsequently for detailed analysis of the data obtained. A computer-governed method for converting scintiscan data recorded over the dorsal or ventral surfaces of the thorax into fractions of pulmonary blood flow traversing the right and left lungs is presented.