Showing papers by "University of Montpellier published in 1977"
TL;DR: This article interpreted both the style of deformation in northeast China and the stability of southeast China as consequences of the India-Eurasia collision and the presumably relatively small compressive stress transmitted across the island arcs of the western Pacific.
Abstract: The active tectonics of northeast China is dominated by strike-slip and normal faulting, with right-lateral motion on north-northeast-trending planes, left-lateral motion on west-northwest-trending planes, and extension in approximately a north-northwest direction. Southeast China, however, is relatively stable. We interpret both the style of deformation in northeast China and the stability of southeast China as consequences of the India-Eurasia collision and the presumably relatively small compressive stress transmitted across the island arcs of the western Pacific. The relationship of the stress field and deformation in eastern China to the India-Eurasia collision are analogous to those in a laterally bounded rigid-plastic medium indented by a rigid die (India).
240 citations
TL;DR: The results suggest that the formation of Cajal-Retzius cells (CRs) begins on day 12, reaches a peak on day 13, and continues on day 14, and earliest non-CR neurons of the temporal cortex appear to be generated on day13.
90 citations
19 citations
TL;DR: On the basis of a marked annual cycle of gonadal activity in ducks, this system appears appropriate for studying the regulation of sex steroid hormone receptors.
18 citations
TL;DR: The effects of isoprenaline and salbutamol on these preparations were suppressed by propranolol and Phenoxybenzamine enhanced the adrenaline-induced stimulation and transformed the inhibition of the second phase into strong stimulation; propr ethanol accentuated the inhibitory effect of adrenaline.
Abstract: Our experiments were carried outin vitro on different isolated and perfused pancreas preparations: adult rat pancreas, newborn dog pancreas, uncinate process and splenic portion of adult dog pancreas. The perfusion liquid contained 1.5 g/l glucose. 1) L-isoprenaline (0.05 µM), a stimulating agent of the β-adrenergic receptors, provoked only a slight and brief stimulation of insulin secretion from the rat pancreas. At the same concentration, this substance provoked a considerable stimulation of the insulin secreting cell of the newborn dog pancreas and a still much more marked response from the uncinate process and the splenic portion of adult dog pancreas. The effects of salbutamol (0.09 µM), a stimulating agent of the β-adrenergic receptors, were comparable to those of isoprenaline. The effects of isoprenaline and salbutamol on these preparations were suppressed by propranolol. 2) As to the effects of L-adrenaline on these different preparations, the following results have been recorded: a) Adrenaline (0.011 µM) inhibited insulin secretion by rat pancreas; this effect was suppressed by phenoxybenzamine; it was not modified by propranolol. — b) Adrenaline (0.011 µM) exerted an inhibitory effect on newborn dog pancreas, but only temporarily. Phenoxybenzamine inversed the effects of adrenaline and allowed the appearance of stimulation of insulin secretion; propranolol accentuated the inhibitory effect of adrenaline. — c) On the uncinate process of the adult dog pancreas adrenaline (0.011 µM) provoked a biphasic effect: brief and strong rise of insulin secretion followed by slight inhibition. Phenoxybenzamine enhanced the adrenaline-induced stimulation and transformed the inhibition of the second phase into strong stimulation. Propranolol suppressed the stimulatory effect of adrenaline which then had only an immediate and strong inhibitory effect. Adrenaline at 0.055 µM concentration provoked an extremely brief hypersecretion peak which was less intense than that recorded when using the 5-times weaker concentration; this peak was followed by strong and lasting inhibition.
17 citations
TL;DR: Horseradish peroxidase was injected in the corticotropic area of the pigeon's hypothalamus and reacted with 3,3′-diaminobenzidine and hydrogen peroxide in brain sections, finding cells labelled with per oxidase reaction product in hippocampal and medial septal regions.
16 citations
TL;DR: In this paper, L'etude de la faune des rongeurs de Plaissan et la decouverte d'un nouveau gisement.
15 citations
TL;DR: The batholite de San Ramon as discussed by the authors is composed of a gros grains ou porphyroide, a biotite and parfois hornblende, de teinte rouge a grise.
Abstract: Le batholite de San Ramon est constitue par un granite a gros grains ou porphyroide, a biotite et parfois hornblende, de teinte rouge a grise. Il s'etend sur 90 km du Nord au Sud a la bordure est de la Cordillere Orientale du Perou Central. Il recoupe des terrains carboniferes et on le retrouve en galets dans des conglomerats rouges sous-jacents aux calcaires triasico-liasiques. Son âge est precise par une isochrone Rb/Sr en roches totales qui le fixe a 238±10 MA. Il s'agit donc d'un granite d'âge permien superieur a trias inferieur en partie contemporain du volcanisme rhyolitique a andesitique qui accompagne le depot des molasses rouges „Mitu“ post-leonardiennes et pre-ladiniennes. Avec d'autre granitoides tardi-hercyniens de la Cordillere Orientale, il temoigne de l'importance insuffisamment reconnue jusqu'alors du plutonisme associe a ce volcanisme »permo-triasique«.
15 citations
TL;DR: In this article, the interactions of Cu 2+ with the ribose moiety of ATP are studied by CD spectra to understand the formation of hydroxocomplexes in the alkaline pH range.
13 citations
TL;DR: Caledogonia globosa gen. et sp.
Abstract: Caledogonia globosa gen. et sp. nov. is considered to be a member of the Myophoriidae following the classification of Newell & Boyd (1975). It is a more evolved genus than Agonisca Fleming from the Ladinian of New Zealand. Both are probably the descendants of Neoschizodus of the Andean-West Antarctic region, a dispersal route on the southern Gondwanaland coastline. Caledogonia was probably a rapid burrower in a high energy paleoenvironment. It occurs in a rhythmic sequence of greywackes and conglomeratic shell beds that lie on pre-Triassic basement. Like the associated bivalves, Maoritrigonia and Manticula, Caledogonia is an endemic genus of the Late Triassic Maorian Province. Caledogonia globosa gen. et sp. nov. est a rapporter aux Myophoriidae, d'apres la classification de Newell & Boyd (1975). Plus evolue que le genre Agonisca Fleming du Ladinien de Nouvelle Zelande, il descend probablement, comme celuici de Neoschizodus represente dans la region Andine et West Antarctique, zone de dispersion faunique ...
10 citations
TL;DR: Spontaneous preoptic MUA was markedly lower in photo-stimulated than in non-photostimulated animals and influence of lighting on preoptIC MUA and participation of the pre optic region in the initiation and/or development of photosexual reflex in birds are discussed.
01 Nov 1977
TL;DR: In this article, the mesure de la conductivite thermique des sols a l'aide d'une sonde cylindrique en regime transitoire is examined.
Abstract: Nous etudions la mesure de la conductivite thermique des sols a l’aide d’une sonde cylindrique en regime transitoire et nous examinons en particulier l’influence des conditions de mise en place de la sonde.
TL;DR: Aquitanien et al. as mentioned in this paper re-consume Decouverte de rongeurs d'âge oligocene and miocene inferieur dans le bassin de Narbonne.
TL;DR: Electrolytic bilateral lesions of the nuclei habenulae were made in male, adult photostimulated quail, and Habenular destruction led to a marked decrease in the plasma thyroxine level, whereas sham operated birds did not differ from controls.
Abstract: Electrolytic bilateral lesions of th nuclei habenulae were made in male, adult photostimulated quail. Habenular destruction led to a marked decrease in the plasma thyroxine level (40%), whereas sham operated birds did not differ from controls. This result appears to be somewhat different from those obtained in mammals and the mechanisms of habenular-thyroid interrelationships are unknown.
01 May 1977
TL;DR: In this paper, the authors present a set of mesures permettant de mesurer ces quantites and determiner the relation fondamentale entre la vitesse de propagation des fractures and KI.
Abstract: La resistance mecanique des verres usuels s'ecarte tres notablement des valeurs theoriquement previsibles ; elle est conditionnee par les phenomenes de fracture fragile et de fatigue statique. Le present expose est destine a servir d'introduction a l'etude de ces aspects des proprietes mecaniques des verres. Apres un bref rappel de la theorie des microfissures (Inglis-Griffith), on aborde l'approche moderne utilisant les methodes de la dynamique des fractures (Irwin). Le concept de facteur de concentration de contrainte KI permettra de definir le facteur de concentration de contrainte critique K IC : on examinera sa relation avec l'energie de surface de fracture (Orowan) caracteristique du materiau. On passera en revue quelques methodes permettant de mesurer ces quantites et de determiner la relation fondamentale entre la vitesse de propagation des fractures et KI. Ces methodes permettent de verifier la validite de la theorie de corrosion sous contrainte (Charles-Hillig) ; en combinant ces mesures avec certains tests, il est possible d'effectuer des previsions sur le comportement mecanique longue duree des verres dans des applications technologiques particulieres.
TL;DR: The presence of a conservative excitonic term in the ultraviolet circular dichroism spectra of NADP(H)-Cu2+ complexes in equimolar solution (5·10−4M/l) shows the existence of an intermolecular association by formation of a stable Cu2+-bridged stacked adduct between the purine moieties of 2 neighbouring dinucleotides as discussed by the authors.
Abstract: The presence of a conservative excitonic term in the ultraviolet circular dichroism spectra of NADP(H)-Cu2+ complexes in equimolar solution (5·10−4M/l) shows the existence of an intermolecular association by formation of a stable Cu2+-bridged stacked adduct between the purine moieties of 2 neighbouring dinucleotides.
TL;DR: In this article, the decouverte de rongeurs dans les formations lacustres ou saumâtres de la region de Narbonne, de Sigean et deLeucate, considerees jusqu'alors comme oligocenes, is discussed.
01 Jan 1977
TL;DR: In this article, a summary of the main results of the conference at Murat-le-Quaire has been published and applied to another (non-published) result in the literature.
Abstract: As the essential part of my conference at Murat-le-Quaire has been already published in [9], I give here a summary of the main results and, for showing the interest of the method, I apply it for getting another (non-published) result.
01 Jan 1977
TL;DR: In this article, the authors consider vector measures with bounded variation, and present some properties related to such measures, including a topological property which extends a well known theorem concerning the narrow topology related to scalar bounded measures.
Abstract: In this paper, we consider vector measures with bounded variation, and we will present some properties related to such measures. We begin in Theorem 1 with a topological property, which extends a well known theorem concerning the narrow topology related to scalar bounded measures. As a consequence of the previous theorem, follows in Theorem 2 a generalization of a recent result from Olech [5], which leads to a characterization of certain closed sets of vector integrable mappings (Corollary 2). Other corollaries which can also be deduced from Theorem 2 are presented; and in the last paragraph an application of the previous theorems is considered, which deals with an order relation between positive Radon measures on the unit sphere of Rn and extends Rost’s result [6].