Showing papers by "University of Grenoble published in 1977"
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TL;DR: For example, during spilitification, the abundance of Li increases from about 12 ppm in normal basaltic rocks to an average of 75 ppm, with some spilites containing up to 190 ppm as mentioned in this paper.
23 citations
TL;DR: In this article, high-resolution elastic and inelastic data were obtained for π+ and π− scattering 12C. Spectra were taken with the SIN pion spectrometer at 148 MeV over a wide angular range.
23 citations
11 citations
TL;DR: In this paper, the equilibrium constants for the fluorinated species HF, F-, HF-2 and H2F2 in formic acid and in a 1M potassium formate solution were studied by 19F NMR.
6 citations
5 citations
TL;DR: The 18 Ne ground state was observed in the pion double-charge-exchange reaction 18 O( π +, π − ) 18 Ne as mentioned in this paper, at a scattering angle of 18° and pion energies of 148 MeV and 187 MeV.
4 citations
18 Nov 1977
TL;DR: In this paper, the authors propose to use the moving-strip field (MSTF) technique to detect the cancer of l'ovaire, a cancer of the femme.
Abstract: Le cancer de l'ovaire occupe le cinquieme rang de frequence parmi les cancers de la femme, et le quatrieme pour la mortalite. Son incidence maximale se situe entre 50 et 70 ans. Son pronostic est effroyable ; quatre chiffres l'expliquent aisement : ● 35 % seulement des diagnostics sont faits aux stades l a lla (formes localisees) ayant un taux de survie a 5 ans de 52 %, ● alors que 65 % des diagnostics sont faits pour des formes plus diffuses (stades llb a IV), ayant un taux de survie a 5 ans de seulement 15,4 %. L'affection debutante est generalement asymptomatique. Les premiers signes cliniques sont souvent insidieux et peu specifiques (troubles digestifs notamment... ) ; l'examen gynecologique s'en trouve retarde. De plus, malgre les nombreux efforts realises ces dernieres annees a propos du depistage, aucun moyen pratique ne permet actuellement un diagnostic plus precoce. Tout tient en fait a quelques signes de presomption non pathognomoniques, qui doivent precipiter la patiente entre les mains d'un gynecologue averti. En cas de tumeur de l'ovaire suspectee, on aura recours aux examens complementaires dans deux buts : soit pour confirmer la nature ovarienne d'une masse pelvienne, ou en cas de tumeur de petit volume, pour confirmer sa nature neoplasique ; soit comme bilan d'extension. Mais le temps essentiel reste la LAPAROTOMIE EXPLORATRICE qui renseignera sur l'etendue de la tumeur (classification FIGO) et sur son type histologique (classification de l’OMS). Ceci realise, tout est a faire : la CHIRURGIE reste le geste primordial ; en resequant le maximum de tumeur, elle permettra une meilleure action des deux autres therapeutiques complementaires : ● LA RADIOTHERAPIE, methode tumoricide eprouvee, bien codifiee, avec notamment la technique du «moving-strip field», mais parfois difficile a realiser jusqu'au bout (mauvais etat general, effets secondaires…) ; de toute facon, utile et raisonnable uniquement dans les cas ou la tumeur residuelle est inferieure a 2 cm. ● et LA CHIMIOTHERAPIE, qui represente en fait le seul veritable espoir de ces tumeurs : monochimiotherapie ou polychimiotherapie ? Ceci reste une question difficile a trancher. Quant a l'IMMUNOTHERAPIE et a l'HORMONOTHERAPIE, elles n'occupent pas encore une place importante dans l'arsenal therapeutique. Actuellement, l'absence d'etudes «randomisees» ne permet pas de conclure au meilleur protocole possible. Des que la therapeutique est mise en route, tout ne fait que commencer. Une surveillance stricte s'impose. Celle-ci devra etre clinique, biologique (pour apprecier la tolerance de la patiente), immunologique (pour depister une eventuelle resurgence infraclinique), cytologique (ponction du Douglas...). Le «second-look» sera ensuite propose au moment juge le plus opportun (en principe un an plus tard). Lui seul permettra de verifier la cavite abdominale dans son ensemble. Nous esperons que ce travail atteindra le triple but que nous nous sommes proposes, a savoir : ● Permettre la synthese des dernieres connaissances acquises tant au point de vue clinique que paraclinique et surtout therapeutique ; ● Proposer une observation type et un protocole ; ● et enfin, contribuer a diffuser l'idee de la necessite de l'existence des groupes d'etudes (EORTC, Groupe Ovaire, GHAST....).
3 citations
2 citations
TL;DR: This is an exploration of a constructive strategy for program improvement and synthesis that associates self-redefinition to mixed strategies for program composition: symbolic macro replacement, logarithmic speed up, resolution of formal recurrences.
Abstract: This is an exploration of a constructive strategy for program improvement and synthesis. A first part recalls unfolding-folding style of manipulations initiated by BURSTALL and DARLINGTON with an application to proofs of equivalence of certain function compositions. Second part, in a more abstract way, presents three basic “forms” and their associated “transforms” constructed with this strategy in a hierarchical order ; they may serve as goals of transformations. Last part associates self-redefinition to mixed strategies for program composition: symbolic macro replacement, logarithmic speed up, resolution of formal recurrences. Each situation, where technique and method apply, is depicted on examples and open problems are evoked.
2 citations
TL;DR: A subset of Algol 68 is described by an attribute-grammar, done in a way which suggests that the attribute point of view may also help reading and writing W-grammars.
Abstract: Among the formalisms used for the definition of programming languages, context-free grammars are widely and satisfactorily used, but their power is limited. Augmented with attributes they can express context sensitive aspects of a language. In this paper a subset of Algol 68 is described by an attribute-grammar. This is done in a way which suggests that the attribute point of view may also help reading and writing W-grammars.
1 citations
01 Jan 1977
TL;DR: In this article, the problem of finding the infimum τ of the values τ such that C(τ) ∩ W is non-empty, and the corresponding set of solutions S = C (τ)∩ W was shown to be equivalent to the minimization of a quasi-convex function over a convex set.
Abstract: Given a non-decreasing family of closed convex sets C(τ) depending on a real parameter t and an affine variety W, we consider the problem of finding the infimum τ of the values τ such that C(τ) ∩ W is non-empty, and the corresponding set of solutions S = C(τ) ∩ W This problem is shown to be equivalent to the minimization of a quasi-convex function over a convex set A dual algorithm is given for solving this problem and its convergence is proved
TL;DR: In this paper, the authors observed a break in the variation of attenuation with applied magnetic field, associated with the existence of the intermediate mixed state, and reported that the attenuation at 9 GHz near H c 1 in niobium.
TL;DR: In this article, the design of linear multivariable systems with specified d.c. steady-state response is studied, and it is shown that this specification imposes a set of linear constraints on the state feedback gains.