Abstract: The invention concerns 2-oxo-1-pyrrolidine derivatives of formula I, 1

Abstract: The invention concerns 2-oxo-1-pyrrolidine derivatives of formula I, 1

Abstract: The present invention relates to N-alkylated GABA (Gamma-aminobutyric acid) compounds, to processes for their preparation, to their use in therapy and to pharmaceutical compositions containing them. More particularly these compounds are useful for treatment of disorders of the central and/or peripheral nervous system. Of particular interest is their potent anticonvulsant activity.

Abstract: The invention concerns 2-oxo-1-pyrrolidine derivatives of formula (I) wherein the substituents are as defined in the specification, as well as their use as pharmaceuticals. The compounds of the invention are particularly suited for treating neurological disorders such as epilepsy.

Abstract: The present invention relates to an individual subaquatic diving apparatus with self-contained recharging. This apparatus is constituted of a bottle pressurized with air by means of a manual pump integrated into the bottle or of a filler valve.

Abstract: In a high speed digital network including access nodes and network nodes each having topology data bases, a method for optimizing the connection set-up operations required for connecting a calling end-user attached to a local access node to a destination user attached to a remote access node, via a conventional connection set-up operation. An Access Node Connection Table (ANCT) in each access node stores a list of every remote access node for which the local access node has at least one user connection. A field in the locate reply message is defined for the destination remote Access Node Topology Database (ANTDB) and remote ANTDB information is inserted prior to sending the reply message. Locate reply message reception is monitored by the local access node, and upon reception an entry is created for the received remote ANTDB information in the local access node unless the remote access node was already identified in the local access node. An optimal path is then selected and connection set up.

Abstract: This invention relates to fragrance enhancing compositions which are capable of controlling malodor from a human body to a significant extent thereby reducing the overall amount of fragrance required to achieve a satisfactory cosmetic product, especially an underarm product. The fragrance enhancing compositions of this invention are made by combining at least three components from a selected group of non-nitromusk materials.

Abstract: A method of frequency tuning a piezoelectric device and apparatus for the implementation thereof. A piezoelectric device having at least one resonating function is formed by two metallized electrodes facing each other, on a face of a plate made of a piezoelectric material. An arranging step arranges the plate, fitted with the electrodes, in a tuning position in proximity to an ion source. Then, an exposing step exposes the plate to an ion flux produced by the source and the ions etch the metal. A measuring step measures the resonant frequency of the resonating function while the plate is in a tuning position. Finally, a raising step raises at least one electrode exposed to the ions to an adjustable bias voltage to control the rate at which the metal on the electrode is etched.

Abstract: New 2-hydroxyl-3-[1-(1H-imidazol-4-yl)alkyl]-benzenecarboximidamides as well as their salts, having the formula ##STR1## wherein R.sub.1 is hydrogen or an alkyl radical having 1 to 4 carbon atoms,R.sub.2 is hydrogen a hydroxyl group, an amino group or an alkyl radical having 1 to 4 carbon atoms,R.sub.3 is hydrogen, or R.sub.2 and R.sub.3 together are --CH.sub.2 -CH.sub.2 --;processes for the preparation thereof, and ophthalmic compositions comprising the same are also described. These compounds are capable of lowering intraocular pressure and can be used in the prevention and treatment of glaucoma.

Abstract: Inside a range of action defined by a station, the station is able to generate therein an enquiry message followed by a silence zone. The station then selectively analyzes the respective contents of a plurality of disjoint time intervals from this silence zone. In the event of obtaining in one of these time intervals, chosen randomly by a single portable object, a content identified as a specified response message associated with this portable object, the station generates a selection message intended for this portable object, which, on reception of this selection message, generates in its turn an acknowledgement message. There follows provision for a phase of transactional communication between the selected portable object and the station.

Abstract: Disclosed is a method to obtain a film of composite material based on particles of conductive polymer, stabilized by a highly steric or highly ionic surfactant. The efficient stabilization of the particles makes it possible to control the progress of the dielectrical properties of the materials as a function of the conductive entity content, leading to the preparation of films with variable impedance. The method can be applied to the making of coatings that meet goals related to electromagnetic wide-band attenuation. FIG. 2 .

Abstract: Disclosed is a novel method for obtaining conductive polymers enabling their conductive to be increased and thermally stabilized. The polymers are obtained by oxidative chemical process in the presence of a codopant, the anions of which are more stable than the oxidating anions. The synthesis of the polymer is furthermore followed by a thermal treatment operation by which the conductivity of the material obtained is stabilized. Application: microwave absorbents.

Abstract: Disclosed is an organic material with a very narrow electronic spin resonance (ESR) line. This material is formed by a 1, 2, 7, 8-tetrahydrocyclopentataperylene salt which may have, advantageously, undergone a heat treatment. The material can be applied to the fabrication of probes for gaussmeters and magnetometers.

Abstract: The invention relates to a process for preparing a polyalkyl perylene which consists in subjecting the corresponding polyalkyl 1,1'-dinaphthalene derivative to a cyclodehydrogenation reaction, by means of an alkali metal. It also relates to the polyalkyl perylene obtained, and to the organic material derived therefrom exhibiting an electron spin resonance spectrum.