Michel Curé

Learn More
We studied the photopic spectral sensitivity in the green-backed firecrown, Sephanoides sephaniodes, a South American hummingbird, and its possible ecological relationship with preferred flowers and body colouration. Avian colour vision is in general tetrachromatic with at least four types of cones, which vary in sensitivity from the near ultraviolet (UV)(More)
The effects of chronic exposure to high environmental temperature (34°C) on T4 production rate, foodintake, growth-rate and resting metabolic rate were investigated in adult male rats. This study was designed to examine the extent of variations and possible relationships between these parameters. As compared to control rats of the same body weight kept at(More)
Changes in thyroid activity and variations in the hypothalamopituitary-thyroid hormone levels were examined in rats exposed to heat (34° C) for 3 weeks. Thyroid activity evaluated histologically (epithelium/colloid ratio, nuclear size), by radioiodine exploration (24 hrs —125I uptake, ratio of mono- to di-125 iodotyrosines — MIT/DIT, ratio of tri- to(More)
The effects of rapid rotation and bi–stability upon the density contrast between the equatorial and polar directions of a B[e] supergiant are investigated. Based on a new slow solution for different high rotational radiation–driven winds and the fact that bi–stability allows a change in the line–force parameters (α, k, and δ), the equatorial densities are(More)
Rats have been placed for periods from two hours to 22 days in a chamber, the atmosphere of which was enriched in CO2 (FICO2: 0.10). The acute phase of hypercapnia induces multidirectional changes of many plasma amino acids. Some of these changes lessen or become of an opposite direction during the first days of exposure; most of them disappear when the(More)
Previous studies have shown that in heat exposed rats, a decreased plasma T4 concentration was associated with a normal biologically active TSH concentration. This study was designed to clarify this apparent discrepancy in the regulation of TSH secretion. In experimental rats (34°C for 25 days) and controls (25°C), plasma total T4 was 3.2 vs. 5.7×10−8(More)
The topological analysis from Bjorkman (1995) for the standard model that describes the winds from hot stars by Castor, Abbott & Klein (1975) has been extended to include the effect of stellar rotation and changes in the ionization of the wind. The differential equation for the momentum of the wind is non–linear and transcendental for the velocity gradient.(More)
We present a general method for solving the non–linear differential equation of monotonically increasing steady–state radiation driven winds. We graphically identify all the singular points before transforming the momentum equation to a system of differential equations with all the gradients explicitly give. This permits a topological classification of all(More)
The effects of rapid rotation and bi–stability upon the density contrast between the equatorial and polar directions of a B[e] supergiant are re–investigated. Based upon a new slow solution for different high rotational radiation driven winds (Curé 2004) and the fact that bi–stability allows a change in the line–force parameters (α, k, and δ), the(More)
Context. Recently, evidence for the presence of weak magnetic fields in Herbig Ae/Be stars has been found in several studies. Aims. We seek to expand the sample of intermediate-mass pre-main sequence stars with circular polarization data to measure their magnetic fields, and to determine whether magnetic field properties in these stars are correlated with(More)