Abstract: A (photo)thermographic recording material comprising a (photo-addressable) thermosensitive element, a support and an outermost antistatic layer, the thermosensitive element comprising a substantially light-insensitive organic silver salt, an organic reducing agent for the substantially light-insensitive organic silver salt in thermal working relationship therewith and a binder, characterized in that the outermost antistatic layer is an organic layer with a resistivity of <10.sup.10 .OMEGA./.quadrature. at a relative humidity of 30%. The outermost antistatic layer may comprise a polythiophene with conjugated polymer backbone in the presence of a polymeric polyanion compound and a hydrophobic organic polymer having a glass transition value (T.sub.g) of at least 40.degree. C., the polythiophene being present at a coverage of at least 0.001 g/m.sup.2 and the weight ratio of the polythiophene to the hydrophobic organic polymer being in the range of 1/10 to 1/1000.

Abstract: A work platform is supported by a sleeve which is movable along a tower having a plurality of vertically equally spaced rungs. The raising system of the invention comprises two hydraulic rams pivotably attached to the sleeve and equipped with corresponding hooks at the extremity of their piston rods. The rams are activated simultaneously in up and down movement but in alternate directions, bearing in a hooking engagement in turn on the rungs of the tower to pull the sleeve upwards along the tower. When a rung is in the path of a hook in the upward movement, the latter pivots backwards to clear the rung and is pivoted back by means of springs.

Abstract: Device of the feeding-bottle type comprising: an external tubular body (1) having an open extremity (1b); a flexible capsule or container (3) housed or capable of being housed within said tubular body and presenting also an extremity (C) which is open or arranged to be opened; means(2, 42) allowing to communicate with environmental air, the space (D) existing between said flexible capsule (3) and the body (1); a specific teat (12) mounted or conformed to be mounted ahead of the openings (A, C) of said body (1) and said capsule (3); and an intermediary non-return valve (5) arranged between the open extremity (C) of said capsule (3) and the base of said teat (12) and delimiting with the latter a dispensing chamber (F); characterized in that a second valve (19, 20) is provided in the nipple piece (15) of the teat (12), between the dispensing chamber (F) and the outlet perforations (18) of said teat, said second valve (19-20) allowing the passage of nutrient liquid towards said outlet perforations (18) and opposi

Abstract: An instrument for boring dental radicular canals in which the conicity of the active part of the tapered stem of the instrument is not constant but the angle of its opening is greater at its rear portion, positioned beyond the diameter D.sub.9, than the angle of opening of its front portion positioned between its end and the diameter D.sub.9 so that a dental canal bored with the instrument has a bell-mouthed shape.

Abstract: A method of making a scroll-type machine particularly suited for use as a refrigerant compressor and incorporating an improved suspension system for the non-orbiting scroll whereby the latter may be pressure biased for the purpose of augmenting tip sealing. The machine also has a modified wrap tip and end plate profile in order to enhance performance, as well as an improved lubrication system for the drive and a baffle arrangement to provide a directed suction inlet. The machine also has an Oldham coupling utilizing a novel ring element which is non-circular and provides for increased thrust-bearing size, or reduced machine size.

Abstract: The invention proposes a packaging signal (psi) region of at most 400 nucleotides, capable of promoting encapsidation of a retroviral vector, which is substantially homologous to the 5' end of a murine viral-like cellular sequence of type VL30, as well as a retroviral vector comprising said psi region.

Abstract: Adsorbent alumina particulates which comprise coagulated droplets, extrudates or crushed alumina particles having a volume of pores with a diameter greater than 80 .ANG. of at least 0.15 cm.sup.3 /g and a particle size of less than 4 mm are well suited for adsorbing chelated organometallic compound values thereon, in particular from a medium of polymerization comprising same.

Abstract: The invention relates to a slug generating charge incorporating an explosive charge arranged in an envelope and a liner intended to be set into motion by the detonation of the explosive. The liner, whose thickness decreases between a central part and its periphery, is in contact with the envelope. A plate is placed between the explosive charge and the liner. The plate is of a diameter equal to the inner diameter of the envelope and is in contact with the liner at least at the latter's thinned peripheral part. The material of the plate is selected such that it reduces the velocity transmitted to the peripheral part of the liner by the explosive charge upon its ignition.

Abstract: In situ stress measurement is carried out within a thin film upon its deposition on a substrate. The substrate is supported on a rotatable collective holder having a plurality of sites therefor and the thin film is deposited in the course of rotation of the collective holder. An individual holder is provided for carrying a test sample at one of a plurality of sites on the collective holder. A sensor is adapted to measure deformation of the test sample, thereby to determine the stress within the film deposited along the test sample and hence the stress within the film deposited on the substrate.

Abstract: A modem for transmission and reception of data samples over a transmission line includes a transmission line break detection device having a correlation meter for providing a measure of the degree of correlation between transmitted and received data samples. Such device further includes a threshold meter for triggering a line break alarm when the correlation exceeds a threshold value. The correlation relates to a limited number of data samples occurring during a portion of an echo period for reception of an echo of transmitted data samples.

Abstract: A process for the alkylation of at least one isoparaffin by at least one olefin in the presence of at least one solid acidic catalyst, characterized in that the major portion of the olefin is initially brought into contact with the catalyst in a complexing zone to form an olefin-catalyst complex in the presence of the isoparaffin, and in that the suspension of the complex in the isoparaffin is then sent to at least one alkylation reaction zone.

Abstract: Novel nucleic acid sequences, vectors for expressing same, and uses of said sequences, in particular in actinomycetes fermentation methods.

Abstract: Process for the broadcasting of programmes with progressive conditional access and separation of the information flow, as well as the corresponding receiver,In order to form the elementary flow, groups of m successive elements of the multiplex are taken and for forming the complimentary flow groups of p successive elements of the multiplex are taken.Application to television with entitlement checking.

Abstract: A control cluster for a water cooled and moderated nuclear reactor, comprises a spider and rods suspended from the spider. Each rod contains neutron-absorbing material. In a lower portion of each rod, the material is a metal neutron absorber. In an upper portion, it is a stack of pellets of boron carbide B.sub.4 C. In a middle fraction occupying a height lying in the range 35% to 45% of the total height, it is zirconium diboride ZrB.sub.2 isotopically enriched in boron 10 or hafnium diboride HfB2.

Abstract: A scroll-type machine is disclosed which is particularly well suited for use as a compressor in refrigeration and air conditioning systems and incorporates a unique arrangement for modulating the capacity thereof. In one group of embodiments the capacity of the scroll-type machine is modulated by relative axial movement between the scroll members so as to form a leakage path across the wrap tips and opposed end plates. In another group of embodiments, modulation is achieved by reducing the orbital radius of one of the scroll members to thereby form a leakage path across the flank surfaces of the wraps. Both types of scroll separation may be accomplished in a time pulsed manner to thereby enable a full range of modulation with the duration of the loading and unloading periods being selected to maximize the efficiency of the overall system.

Abstract: A method for digitally demodulating a complex modulation signal and allowing different parameters to be transmitted thereby. The input signal is baseband filtered and a complex demodulation is performed on the first subcarrier at a frequency Fp to obtain a correction signal, after squaring. The input signal is demodulated around a frequency exactly equal to twice the frequency of the first demodulation in order to obtain output signals which exhibit a frequency error with respect to 2Fp. This frequency error is corrected by multiplication with the previously derived frequency correction signal. The corrected signal is filtered at a frequency lower than 1 Hz, in order to obtain a signal giving the phase error at a frequency 0, that is to say that of the subcarrier at 2Fp. The signal makes it possible to correct the phase of signals which were previously frequency corrected in order to obtain two signals which are complementary to one another and transmitted by quadrature modulation around the frequency 2Fp.

Abstract: The present invention relates to a rotary-wing aircraft, especially such as a helicopter, of the compound type including:a fuselage (2),fixed-wing elements (6) arranged on either side of said fuselage (2),at least one main rotor (4),an anti-torque rear rotor (9), anda rear thruster propeller (14), arranged at the end of the tail boom (8) of said fuselage (2).According to the invention, said rear thruster propeller (14) has a shroud (15).

Abstract: An apparatus and a method for making a lithographic printing plate by silver salt diffusion transfer processing, comprising means for informationwise exposing an imaging element (5) comprising on a support in the order given a silver halide emulsion layer and a layer comprising physical development nuclei: means for processing a thus obtained informationwise exposed imaging element using a processor comprising a developing unit (120), the developing unit comprising (i) a tank holding an alkaline processing liquid, (ii) a plurality of guide rollers (50) and guide plates (121 to 126) for transporting and guiding the informationwise exposed imaging element in a transport direction X through the alkaline processing liquid characterised in that at least one of the guide plates (121 to 126) exhibits a plurality of apertures (150) to allow the alkaline processing fluid to pass evenly near the surface of the imaging element.

Abstract: New titanium zeolite Beta catalysts which have been found to be useful as catalysts for the oxidation of organic compounds using organic hydroperoxides as oxidation catalysts. They are particularly useful as ring opening oxidation catalysts and may be used to produce adipic acid from cyclohexane.

Abstract: A reaction gas containing methyltrichlorosilane (MTS) and hydrogen is injected into the infiltration chamber (30) in which the substrate is placed and where predetermined infiltration temperature and pressure conditions obtain. The gas entering the infiltration chamber is preheated (by plates 46) so as to bring it up to temperature before coming into contact with the substrate. The residual gas containing the remainder of the reaction gas together with gaseous reaction products is extracted from the chamber. Infiltration is performed at a temperature lying in the range 960.degree. C. to 1050.degree. C., and preferably in the range 1000.degree. C. to 1030.degree. C., under a total pressure of not more than 25 kPa, and preferably equal to 7 kPa to 12 kPa, and the concentration of silicon-containing species in the residual gas is lowered at the outlet from the infiltration chamber, e.g. by injecting an inert gas (via 70).