Results 211 to 220 of about 591,200 (264)
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Fitness and physiology in a variable environment
Oecologia, 2011The relationship between physiological traits and fitness often depends on environmental conditions. In variable environments, different species may be favored through time, which can influence both the nature of trait evolution and the ecological dynamics underlying community composition.
Sarah, Kimball +4 more
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The physiologic mechanisms of variable decelerations
American Journal of Obstetrics and Gynecology, 1992The purpose of this study was to determine the cause and physiologic consequences of variable decelerations.Previous studies of heart rate changes in human and experimental animals were critically reviewed with respect to the autonomic nervous system component, the cause of the increased vagal activity, and the role of cord compression or other stimuli
R H, Ball, J T, Parer
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ORAL CONTRACEPTIVES AND PHYSIOLOGICAL VARIABLES
InPharma, 1980Blood levels were measured in a total of 270 randomly selected women aged 30-59 years of glucose serum cholesterol serum triglyceride and plasma insulin concentrations to determine the effects of oral contraceptive (OC) usage on these physiological parameters. The women studied were classified as past users current users and never users.
L D, Ostrander +4 more
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Physiologic variability and fetal electrocortical activity
American Journal of Obstetrics and Gynecology, 1980The relationship between fetal electrocortical activity and multiple fetal parameters was examined in chronically instrumented fetal lambs. Consistent small but significant changes in fetal heart rate, mean arterial pressure, umbilical blood flow, and the cerebral uptake of glucose relative to oxygen were observed as fetal electrocortical activity ...
J F, Clapp +4 more
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Variability in the composition of physiologic duodenogastric reflux
Journal of Gastrointestinal Surgery, 1998Duodenogastric reflux has long been associated with various diseases of the foregut. Even though bile is often used as a marker, duodenogastric reflux consists of other components such as pancreatic juice and duodenal secretions. The aim of this study was to investigate the occurrence of duodenogastric reflux, its components, and the variability of its
K H, Fuchs +6 more
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Use of Physiologic Variables in Nursing Research
Image: the Journal of Nursing Scholarship, 1995In this study, the use of physiologic variables is described in research reports published 1989‐1993 in four broad‐based research journals. The National Institute for Nursing Research (NINR) emphasizes the need for more physiologically based nursing research.
L C, Pugh, F G, DeKeyser
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Quantification of Psychosocial Variables in Intrinsic Asthma Relationship to Physiologic Variability
Psychotherapy and Psychosomatics, 2010This was a pilot study of 36 patients with intrinsic asthma which indicates that routine testing of psychosocial assets and life change would be of value in clinical management. Therapeutic attention should be directed to patients with low psychosocial assets and high life change. It is felt that patients in this group should receive additional medical
D L, Dudley +3 more
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Sex as a biological variable for cardiovascular physiology
American Journal of Physiology-Heart and Circulatory PhysiologyThere have been ongoing efforts by federal agencies and scientific communities since the early 1990s to incorporate sex and/or gender in all aspects of cardiovascular research. Scientific journals provide a critical function as change agents to influence transformation by encouraging submissions for topic areas, and by setting standards and ...
Merry L. Lindsey +4 more
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Subjective variables in electro-physiological recording
Acta Biotheoretica, 1967Electrophysiology deals with apparatus applied in a stimulus response situation. This technique is partly concerned with physical problems, partly with biological ones. The failure to appreciate differences in these problems leads to assumptions which require critical examination.
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Continuous Monitoring of Physiologic Variables with a Dedicated Minicomputer
Computer, 1975A custom designed system employing advanced communication techniques 1,2 and unique video displays 3 for computer-based patient monitoring (see Figure 1) has been designed and built by the Washington University Biomedical Computer Laboratory in cooperation with the Department of Surgery and Barnes Hospital.
Lewis J. Thomas Jr. +3 more
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