Incorporation of super 14 C-tryptophan into super 14 C-protein by cultured rat pineals - Stimulation by 1-norepinephrine.
C 14-tryptophan incorporation into C 14-protein in cultured rat pineals, noting norepinephrine stimulation
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C 14-tryptophan incorporation into C 14-protein in cultured rat pineals, noting norepinephrine stimulation
Degrees of adaptation acquired from coriolis stimulation and head movements in rotating rooms
Federal support and stimulation of interdisciplinary research in university social and physical science departments
Cochlear hair-cell loss in guinea pigs after intense sinusoidal sound stimulation
Dibutyryl cyclic adenosine monophosphate stimulation of melatonin and serotonin synthesis from C-14 labeled tryptophan by rat pineals in organ culture
Appetitive behavior of rats following cessation of hypothalamic stimulation, observing eating and drinking inhibition
Stimulated emission of RF recombination lines from ionized atoms in H I regions
Object carrying behavior of rats, using electrical stimulation of hypothalamic structures
Controlled premature atrial stimulation effects on atrioventricular conduction in man, using electrode catheter technique to record electrical activity of specialized conducting fibers
Interplanetary magnetic field fluctuations stimulated by lunar wake, using Explorer 35 satellite measurements
Transient stimulated rotational and vibrational Raman scattering in gases using mode locked ruby laser
Ocular focus stimulator with provision for optical distance change between object and observer without brightness and visual angle variation
Vestibular sinusoidal stimulation effects on compensatory tracking under various postures and display conditions
Dynamic characteristics of human skeletal muscle modeled from surface stimulation
Preliminary results on thermally stimulated exoelectron emission from Apollo 12 lunar materials
Radio telemetry stimulator for conditioning large animals by applying high voltage short duration pulses to skin surface
Ultrashort pulse formation in short pulse stimulated Raman oscillator, achieving partial group velocity matching
The deconditioning effects of weightlessness on the cardiovascular system of astronauts are discussed. It is believed that man cannot tolerate indefinite exposure to weightlessness without considerable circulatory deterioration. Analyses of data collected from space flights to date substantiate these beliefs, and confirm the fact that some form of compensation must be provided to keep the cardiovascular system of space travelers properly conditioned. Sequential pulsatile devices were investigated to produce periodic hydrostatic pressure gradients in the venous system of eight subhuman primates. Intermittent venous pooling of blood in the extremities triggers and stimulates the vascular reflex mechanisms of the cardiovascular system that may have significant benefits in maintaining the circulatory system in proper tone under weightless conditions. Electrocardiograms, blood pressure measurements, cardiac output and stroke volume determinations were used to evaluate the efficiency of the described technique. Results were amazingly consistent to indicate an efficient system for intermittently exercising the heart within safe and medically acceptable limits.