Un témoignage sur les éclegmes: PSI 6.718

in Boehm, Isabelle; Rousseau, Nathalie (Eds.) L'expressivité du lexique médical en Grèce et à Rome. Hommages à Françoise Skoda (in press)

Édité à deux reprises, le PSI 6.718 (Hermopolis, première moitié du IVe siècle de notre ère, parchemin, 5,6 x 7,7 cm) conserve les restes d'un recueil de nature géoponique, dont la troisième recette ... [more ▼]

Édité à deux reprises, le PSI 6.718 (Hermopolis, première moitié du IVe siècle de notre ère, parchemin, 5,6 x 7,7 cm) conserve les restes d'un recueil de nature géoponique, dont la troisième recette, jamais vraiment élucidée jusqu'ici, est en réalité relative à un éclegme. Après avoir réédité la recette, on s'interroge sur ce type de médicament, sur les mots grecs qui le désignent, sur son utilisation dans le monde gréco-romain, ainsi que sur son histoire. [less ▲]

témoignages croisés d'acteurs des deux niveaux d'enseignement

Scientific conference (2009, November 18)

Témoignages papyrologiques sur la médecine vétérinaire dans l'Égypte gréco-romaine et byzantine

in Cam, Marie-Thérèse (Ed.) La médecine vétérinaire antique : sources écrites, archéologiques, iconographiques. Acte du colloque International de Brest, 9-11 septembre 2004, Université de Bretagne Occidentale (2007)

Si, en Égypte, les animaux jouirent toujours d'un statut privilégié, on peut en inférer que la médecine vétérinaire dut également y jouer un rôle non négligeable, y compris aux périodes gréco-romaine et ... [more ▼]

Si, en Égypte, les animaux jouirent toujours d'un statut privilégié, on peut en inférer que la médecine vétérinaire dut également y jouer un rôle non négligeable, y compris aux périodes gréco-romaine et byzantine (de 332 avant notre ère à 641 de notre ère), pour lesquelles on dispose d'un certain nombre de témoignages papyrologiques. À la fois littéraires et documentaires, ceux-ci, non seulement fournissent des renseignements de première main sur la pratique de la médecine vétérinaire et sur la condition des praticiens locaux, mais attestent également des méthodes et un vocabulaire souvent originaux. [less ▲]

Témoignages sur le culte populaire de saint Lambert

in Actes de la Fédération Archéologique & Historique de Belgique (1980)

Temperament and character inventory (TCI) and depression.

in Journal of Psychiatric Research (1999), 33(1), 31-6

Although several studies have assessed the relationships between the temperament dimensions of the Cloninger model of personality and depression, little is known about the role played by the character ... [more ▼]

Although several studies have assessed the relationships between the temperament dimensions of the Cloninger model of personality and depression, little is known about the role played by the character dimensions proposed by the seven-factor model of Cloninger in depression. In this study, the relationships between the Temperament and Character Inventory (TCI) and depression were examined in a sample of 40 major depressive patients and 40 healthy controls. Depressed patients exhibit higher harm avoidance and self-transcendence scores as well as lower self-directedness and cooperativeness scores as compared to healthy controls. However, the three other dimensions do not differ between depressive patients and controls. Among the depressive group, harm avoidance, self-directedness and cooperativeness dimensions are related to the severity of depression as assessed by the Hamilton scale. This study confirms the state dependence of the harm avoidance dimension and suggests a relationship between the character dimensions of the Cloninger model and depression. [less ▲]

Temperature Adaptation of Proteins: Stability, Folding and Flexibility in Mesophilic-like Engineered Alpha-Amylases

Poster (2009, July 02)

Habitats of permanently cold temperature, like polar regions for example, have been colonized by a great variety of psychrophilic organisms producing enzymes adapted to function efficiently in these cold ... [more ▼]

Habitats of permanently cold temperature, like polar regions for example, have been colonized by a great variety of psychrophilic organisms producing enzymes adapted to function efficiently in these cold environments. According to the hypothesis developed in our laboratory, the adaptation to cold temperature involves relationships between activity, flexibility and stability. Even if activity and stability are not physically linked in proteins 1, the consensus for the adaptive strategy is to take advantage of the lack of selective pressure for stable proteins to lose stability, therefore increasing the flexibility or mobility of the enzyme at low temperatures that restrict molecular motions. 2 Working on alpha-amylase, we have investigated the role of weak interactions in thermal adaptation of proteins by site-directed mutagenesis. We have built two multiple-mutants (Mut5 and Mut5CC) of the psychrophilc alpha-amylase (AHA) from the Antarctic bacterium, Pseudoalteromonas haloplanktis. The single mutations were selected by comparison of the presence of weak interactions in a mesophilic chloride-dependant homolog from pig pancreas, PPA. The study of selected single mutations prompt us to construct two multiple-mutants, Mut5 and Mut5CC, carrying 5 and 6 additional weak interactions found in PPA, that showed an increased stability and a lower activity at 25 °C.3 We have compared AHA, Mut5 and Mut5CC with additional methods like differential scanning calorimetry, thermal and chemical unfolding and circular dichroism in order to determine the gain in stability. We also studied the flexibility or breathing of the enzymes by acrylamide-induced fluorescence quenching. The newly introduced weak interactions stabilized the proteins, protected them against heat and chemical unfolding and also induced an effective loss of flexibility. These results and those of the previous work 3, unambiguously support the capital role of weak interactions in the balance between activity, flexibility and stability and provide a better knowledge of the adaptation of enzymes to cold temperatures. [less ▲]

Temperature dependence in random matrix models with pairing condensates

in Physical Review D (2005), 72(1), 016003

We address a number of issues raised by a manuscript of Klein, Toublan, and Verbaarschot [hep-ph/0405180] in which the authors introduce a random matrix model for QCD with two colors, two flavors, and ... [more ▼]

We address a number of issues raised by a manuscript of Klein, Toublan, and Verbaarschot [hep-ph/0405180] in which the authors introduce a random matrix model for QCD with two colors, two flavors, and fermions in the fundamental representation. Their inclusion of temperature terms differs from the approach adopted in previous work on this problem [Phys. Rev. D 64, 074016 (2001)]. We demonstrate that the two approaches are related by a transformation that leaves the thermodynamic potential invariant and which therefore has no effect on physical observables. [less ▲]

Temperature dependence of mycosubtilin homologue production in Bacillus subtilis ATCC6633.

in Research in Microbiology (2008), 159(6), 449-57

Bacillus subtilis ATCC6633 produces mycosubtilin, a non-ribosomally synthesized lipopeptide of the iturin family which presents antagonistic activities toward various phytopathogens. Different homologues ... [more ▼]

Bacillus subtilis ATCC6633 produces mycosubtilin, a non-ribosomally synthesized lipopeptide of the iturin family which presents antagonistic activities toward various phytopathogens. Different homologues with fatty acid moiety varying from C15 to C17 are usually co-produced, with their biological activities increasing with the number of carbons in the fatty acid chain. In the present report, we highlight that growth temperature modulates both the extent of mycosubtilin production and the relative abundance of the different homologues. A 30-fold increase in mycosubtilin production was observed when the temperature was decreased from 37 degrees C to 25 degrees C for both strain ATCC6633 and its derivative BBG100, a constitutive mycosubtilin overproducer. However, no significant difference in either the expression of the mycosubtilin synthetase encoding genes or in the intracellular synthetase concentration could be found, suggesting that the observed phenotype originated from a higher mycosubtilin synthetase turnover at lower temperature. We also point out that lower growth temperature leads to an increased proportion of odd-numbered fatty acid homologues as a consequence of de novo synthesis of C17 anteiso fatty acid following cell adaptation to low temperatures. [less ▲]

Température effective des ions dans un spectromètre de mobilité ionique de type "travelling wave ion guide"

Conference (2010, October 14)

Temperature gradients in the core overshooting region

in Communications in Asteroseismology (2007), 150

The term overshooting is used to describe two situations: the chemical mixing induced by the convective elements crossing the boundary given by Schwarzschild's criterion (overshooting), or, in addition to ... [more ▼]

The term overshooting is used to describe two situations: the chemical mixing induced by the convective elements crossing the boundary given by Schwarzschild's criterion (overshooting), or, in addition to that mixing, the change in the temperature gradient in the overshoot region when convection is efficient enough (penetration; Zahn 1991). We show that for models with the same mass of the mixed central region the oscillation frequencies are sensitive to the kind of overshoot treatment adopted. This effect is especially obvious for SPB stars and is high enough to be detected by CoRoT long run observations. That would imply the possibility of disentangling penetration from overshooting. [less ▲]