Showing papers by "Conservatoire national des arts et métiers published in 1979"
TL;DR: In this article, a method for the synthesis of a bonded phase that consists in attaching l -proline to triethoxypropylaminosilane and then bonding the final product to the silica gel microparticles was developed.
76 citations
TL;DR: It is proved that if G and its complement are connected then there exists an unique class of edges that covers all the vertices of G and this theorem yields immediately an O(n3) decomposition algorithm.
62 citations
TL;DR: In this article, the reduction of phenylalkylcetones p-X-C6H4COR (X = H: R = C2H5, 1C3H7,1C4H9, X = CH3, OCH3, Cl, CF3) is discussed.
36 citations
TL;DR: A good correlation exists between estimates of heat output calculated from oxygen consumption and those obtained with direct microcalorimetric assay of isolated mitochondria, and the limitation of energy dissipation by guanosinedi-phosphate (GDP) (a recoupling agent) in these mitochondria could be directly observed.
29 citations
TL;DR: The configuration absolue des benzhydrols depend de la nature des substituants portes par les reactants, l'effet des substitueants est discute en supposant l'intervention d'une interaction du type donneur accepteur entre les noyaux aromatiques au sein des etats de transition diastereoisomeriques as mentioned in this paper.
15 citations
TL;DR: Thanks to the laser, high definition photographic plates, and an achromatic compensation phenomenon applicable to equal inclination fringes, the spectrometric method, based on an analysis of Fabry-Perot rings through an adapted grid, is now simple to use, as shown in this paper.
Abstract: Thanks to the laser, high definition photographic plates, and an achromatic compensation phenomenon applicable to equal inclination fringes, the spectrometric method, based on an analysis of Fabry-Perot rings through an adapted grid, is now simple to use, as shown in this paper. Experimental results are given and compared with those obtained from the conventional Fabry-Perot spectrometer.
12 citations
TL;DR: Evidence (naps, meal time) supports the hypothesis of a physiological adjustment in permanent shift workers: rotary printers, and it is pointed out that this adjustment is fragile: the printers must have very rigid life habits and schedules (sleep, meals).
Abstract: This paper describes rest/activity rhythms of permanent shift workers: rotary printers. They reported during one week the hours of their sleep onset and of their meals, and their subjective appreciation of tiredness and mood. The average sleep duration (7.84 h) can be compared with that of day workers and is fairly longer than the duration of day sleep of shift workers when they are on nightshift. This long sleep can be accounted for by: (1) the early bedtime (around 05.00 h), (2) an adjustment of biological rhythms to the schedule inversion.
10 citations
TL;DR: In this article, a new method to obtain aryl sulfamates has been developed from the reaction between aryls fluorosulfates and secondary aliphatic amines.
Abstract: L'action des amines aliphatiques secondaires sur les fluorosulfates d'aryle constitue une nouvelle voie de synthese des sulfamates d'aryle. A l'aide du concept HSAB (Hard and Soft Acids and Bases), nous avons montre qu'il est possible de rationaliser la difference de reactivite entre fluorosulfates et chlorosulfates d'aryle. A new method to obtain aryl sulfamates has been developed from the reaction between aryl fluorosulfates and secondary aliphatic amines. The use of HSAB concept (Hard and Soft Acids and Bases) permits us to explain the difference of the ractivity between aryl fluorosulfates and aryl chlorosulfates.
8 citations
TL;DR: The first measurement of the relative intensities of the radiative processes of the L shell of argon was made in this article. But this measurement was performed in the case of a single ion.
8 citations
TL;DR: The cycloaddition of aryl azidosulfates to norbornene, in acetonitrile, at 25°, after loss of nitrogen, gives N-arylosysulfonyl-aziridines.
6 citations
TL;DR: In this article, the existence of a surface mode in the ωS-to-ωP frequency range was established, for thick plasma slabs, independently of the dielectric function damping term.
TL;DR: A log-probit model was successfully fitted to the data in 11 out of the 21 parameters studied, and enabled to predict a LSD dose (having the least significant effect) for each one of these 11 parameters.
TL;DR: In this paper, a new electrostatic probe is proposed for the absolute measurement of the amplitude of s.a.w. propagating on piezoelectric materials, which can be applied to LiNbO3 and compare with those obtained using an optical probe.
Abstract: A new electrostatic probe is proposed for the absolute measurement of the amplitude of s.a.w. propagating on piezoelectric materials. Experimental measurements have been done on Y-cut Z-propagation LiNbO3 and results are compared with those obtained using an optical probe.
TL;DR: In this paper, a spherically symmetrical apparatus was proposed to measure heat conductivity of particular liquids under transient heat transfer conditions, and three experimental investigations on paraffin oil, cyclohexanon, and macromolecular solution were presented.
TL;DR: The formulas in this Letter give a means of comparing both spectrometers with greater precision than in the previous work, whatever the diameter of the conventional axial diaphragm.
Abstract: Henri Dupoisot is with CNAM, 3 Boulevard Pasteur, F.75 015 Paris, France; the other authors are with Université Paris VII, Group de Physiques des Solides de 1'ENS, 75221 Paris Cedex 05, France. Received 1 March 1979. 0003-6935/79/101476-02$00.50/0. © 1979 Optical Society of America. In a previous paper simple formulas were derived that enabled a comparison to be made, for a given resolution, between the luminosity of a grid Fabry-Perot spectrometer and that of a conventional F.P. spectrometer. Some discrepancies in the literature were pointed out. However, an approximation, only justified for small x, was used when determining the maximum instrument function in conventional F.P. spectrometry, as remarked by Tracy. The formulas in this Letter give a means of comparing both spectrometers with greater precision than in the previous work, whatever the diameter of the conventional axial diaphragm. Formulas are deduced from the instrument function established by precedent:
TL;DR: In this article, a simple method is proposed for absolute measurement of s.a.w. mechanical deformation normal to the surface of propagation, with an error smaller than 5%.
Abstract: A simple method is proposed for absolute measurement of s.a.w. mechanical deformation normal to the surface of propagation. Experimental results are given with an error smaller than 5%.
TL;DR: In this paper, the general dispersion relation of surface plasma oscillations (SPO) excited in a multilayered medium made of n thin films having a complex permittivity is given, using a formalism well adapted to numerical calculations.