Nouvelles recherches sur le botulisme du vison et du furet et la vaccination antibotulique de ces mustélidés

Prévot A. R., Silloc R. Nouvelles recherches sur le botulisme du vison et du furet et la vaccination anti-bolutique de ces mustélidés. In: Bulletin de l'Académie Vétérinaire de France tome 110 n°2, 1957. pp. 93-102

Le botulisme expérimental du Cheval provoqué par la toxine D. Evolution et essai de sérothérapie

Jacquet Jean, Prévot A. R. Le botulisme expérimental du Cheval provoqué par la toxine D. Evolution et essai de sérothérapie. In: Bulletin de l'Académie Vétérinaire de France tome 105 n°6, 1952. pp. 247-253

Le botulisme expérimental du cheval provoqué par la toxine D Symptômes, pathogénie, diagnostic, lésions

Jacquet Jean, Prévot A. R. Le botulisme expérimental du Cheval provoqué par la toxine D. Symptômes, pathogénie, diagnostic, lésions. In: Bulletin de l'Académie Vétérinaire de France tome 106 n°2, 1953. pp. 135-140

Étude de vingt-cinq foyers récents de botulisme animal

Prévot A. R., Huet M., Tardieux P. Étude de vingt-cinq foyers récents de botulisme animal. In: Bulletin de l'Académie Vétérinaire de France tome 103 n°9, 1950. pp. 481-487

Fast-neutron induced background in LaBr3:Ce detectors

The response of a scintillation detector with a cylindrical 1.5-inch LaBr3:Ce crystal to incident neutrons has been measured in the energy range En = 2-12 MeV. Neutrons were produced by proton irradiation of a Li target at Ep = 5-14.6 MeV with pulsed proton beams. Using the time-of-flight information between target and detector, energy spectra of the LaBr3:Ce detector resulting from fast neutron interactions have been obtained at 4 different neutron energies. Neutron-induced gamma rays emitted by the LaBr3:Ce crystal were also measured in a nearby Ge detector at the lowest proton beam energy. In addition, we obtained data for neutron irradiation of a large-volume high-purity Ge detector and of a NE-213 liquid scintillator detector, both serving as monitor detectors in the experiment. Monte-Carlo type simulations for neutron interactions in the liquid scintillator, the Ge and LaBr3:Ce crystals have been performed and compared with measured data. Good agreement being obtained with the data, we present the results of simulations to predict the response of LaBr3:Ce detectors for a range of crystal sizes to neutron irradiation in the energy range En = 0.5-10 MeVComment: 28 pages, 10 figures, 4 Table

EROS Variable Stars : Discovery of Beat Cepheids in the Small Magellanic Cloud and the effect of metallicity on pulsation

We report the discovery of eleven beat Cepheids in the Small Magellanic Cloud, using data obtained by the EROS microlensing survey. Four stars are beating in the fundamental and first overtone mode (F/1OT), seven are beating in the first and second overtone (1OT/2OT). The SMC F/1OT ratio is systematically higher than the LMC F/1OT, while the 1OT/2OT period ratio in the SMC Cepheids is the same as the LMC one.Comment: 4 pages, Latex file with 4 .ps figures. accepted for publication in A A Letter

The effect of metallicity on the Cepheid distance scale and its implications for the Hubble constant (H0H_0) determination

Recent HST determinations of the expansion's rate of the Universe (the Hubble constant, H_0) assumed that the Cepheid Period-Luminosity relation at V and I are independent of metallicity (Freedman, et al., 1996, Saha et al., 1996, Tanvir et al., 1995). The three groups obtain different vales for H_0. We note that most of this discrepancy stems from the asumption (by both groups) that the Period-Luminosity relation is independent of metallicity. We come to this conclusion as a result of our study of the Period-Luminosity relation of 481 Cepheids with 3 millions two colour measurements in the Large Magellanic Cloud and the Small Magellanic Cloud obtained as a by-product of the EROS microlensing survey. We find that the derived interstellar absorption corrections are particularly sensitive to the metallicity and when our result is applied to recent estimates based on HST Cepheids observations it makes the low-H_0 values higher and the high-H_0 value lower, bringing those discrepant estimates into agrement around $H_0 \approx 70 km/s Mpc^{-1}$.Comment: 4 pages, Latex, with 2 .ps accepted for publication astronomy and astrophysics Letter