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OBJECTIVE The waveform of the first derivative of thoracic electrical bioimpedance was used to calculate systolic time intervals of the cardiac cycle, preejection period/left ventricular ejection time ratio, and diastolic time intervals, isovolumic relaxation period/filling time ratio. DESIGN Prospective clinical study. Waveforms were examined from 913(More)
The ability to remember is influenced by environmental and lifestyle factors, such as stress and diet. A flavanol contained in chocolate, epicatechin (Epi), has been shown to enhance long-term memory (LTM) formation in Lymnaea. Combining two stressors (low-calcium pond water and crowding) blocks learning and all forms of memory; that is, this combination of(More)
Environmentally relevant stressors alter the memory-forming process in Lymnaea following operant conditioning of aerial respiration. One such stressor is heat. Previously, we found that following a 1 h heat shock, long-term memory (LTM) formation was enhanced. We also had shown that the heat stressor activates at least two heat shock proteins (HSPs): HSP40(More)
Trends in suicide among age groups 10-14, 15-19, and 20-24 in Portugal are analyzed for the period 1963-1983. Differences are noted between the north and south and between urban and rural areas. Consideration is also given to the impact on suicide rates of changes over time in the educational system and in the economy. (SUMMARY IN ENG AND FRE)
To evaluate the scintigraphy images of 99mTc-tetrofosmin in the primary hyperparathyroidism, we studied 8 patients, 5 males, with ages between 17 and 82 (median = 50) years old, and with clinical and laboratory manifestations of hyperparathyroidism (calcium metabolism and PTH elevated); parathyroid scintigraphy was realized after 20mCi (740 MBq)(More)
The main question dealt with in the text relates to the attempt at establishing a chain of logical reasoning, which may eventually contribute to circumscribing the purpose of sociology of the population. In addition, demography as a social science is questioned. Assuming that the sociology of the population may be a subdiscipline in the field of science(More)