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We have investigated how total body thermosensitivity in various mammalian and avian species (mouse, rat, golden hamster, guinea pig, rabbit, dog, goat, pigeon, duck, goose) is related to their respective local thermosensitivities in the hypothalamus, spinal cord and skin. Local and total thermosensitivities were determined by measuring the relationship(More)
Flap failure in free-tissue transfer relates strongly to technical failure of the anastomosis or to kinking as well as to external compression of the donor or recipient vessels. Intraoperative monitoring of flap perfusion has shown to prevent flap failure. This prospective, clinical study presents the results of intraoperative dynamic infrared thermography(More)
1. Extrahypothalamic thermosensitivity at normal (39 degrees C) and lowered (33.8 degrees C) hypothalamic clamp temperatures has been measured in cold exposed rabbits equipped with chronically implanted hypothalamic perfusion thermodes. The animals were subjected to body core cooling by means of cold perfused thermodes placed in the colon. 2. At lowered(More)
Within the past few years there has been a significant increase in the use of Digital Elevation Models (DEMs), for applications as varied as telecommunications and precision agriculture, forestry and flood-risk assessment. Additionally, one may expect that externally-supplied DEMs will be used increasingly for ortho-rectification of high-resolution(More)
The threshold body core temperature for selective brain cooling (SBC) as well as the slope of brain cooling were determined in three Norwegian reindeer (Rangifer tarandus tarandus) during rest and during exercise. Brain temperature was measured in the hypothalamus (Thypo) and blood temperature (Tblood) was measured either in the right carotid artery or in a(More)
Cold exposure in the nine-banded armadillo causes vigorous shivering and a rise in core temperature (Tc). The increase in metabolic rate and Tc depends upon exposure temperature, but may be as much as six times and 3 degrees C respectively (Johansen 1961). These findings might indicate an insensitivity to Tc, which is puzzling since internal temperature is(More)
Shivering threshold and thermosensitivity were determined in six conscious rabbits at ambient temperature (Ta) 20 and 10 degrees C before and at six different times after saline injection (0.15 ml iv) and polyriboinosinic-polyribocytidylic acid (poly I:C)-induced fever (5 micrograms/kg iv). Thermosensitivity was calculated by regression of metabolic heat(More)
In man hypothermia exists when core temperature (Tc) falls below 35 degrees C. The onset of hypothermia is often insidious in that it can occur without any particular symptoms of serious discomfort. There is evidence that this decrease in thermosensitivity is most likely to occur when the rate of body cooling is slow. In addition there is some evidence that(More)
The possible role of humoral factors in the control of shivering in the common eider duck (Somateria mollissima) was investigated using a cross-circulation technique. Pairs of animals were coupled so that the arterial system of one animal was connected to the venous system of the other. The rate of blood transferral was 12.8 ml min-1. By adequate(More)
BACKGROUND Seasonal variations in mortality resulting from cardiovascular diseases (CVD) have been demonstrated in many countries, with the highest levels observed during the coldest months of the year. We studied the seasonal changes in CVD mortality in Norway and the Republic of Ireland, two countries which are demographically quite similar, but(More)