Abstract: The invention relates to a method for enhancing erosion uniformity on the sputtering surface of a magnetron cathodic sputtering target. The invention is characterised in that it consists in adding to said target intended to be coupled to a magnetron maintained fixed as compared to this target, at least one ferromagnetic piece for complete or partial insertion into said target or by juxtaposition thereto, so as to bring about, at the entire sputtering surface, a curvature reduction of the magnetic induction lines generated by the magnetron.

Abstract: Purified form of streptogramines, characterised in that it contains at least one component from group B streptogramines of general formula (I), wherein R1 is Me or Et, R2 is H or OH, and R3 is substituted benzyl of general formula (III), such that 1) if R2 is H, R is NR4R5, wherein one of R4 and R5 is H or an Me radical and the other is Me, and R′ is Cl or Br, or R is (C3-5)alkenyl if R4 and R5 are Me, or 2) R is H and R′ is halogen, alkylamino or dialkylamino, an ether-oxide residue, alkylthio, (C1-3)alkyl or trihalogenomethyl, or R is halogen, (C2-4)alkylamino, (C2-4)dialkylamino or methyl ethyl amino, pyrrolidino alkenyl alkyl amino, dialkylamino, an alkyl cycloalkylmethyl amino radical or in ether-oxide residue, alkylthio, alkylthiomethyl, (C1-6)alkyl, aryl or trihalogenomethyl, and R′ is H, or R is halogen, amino, alkylamino or dialkylamino, an ether-oxide residue, an alkylthio radical, (C1-6)alkyl or trihalogenomethyl and R′ is halogen, alkylamino or dialkylamino, an ether-oxide

Abstract: A microwave antenna element comprising a ground plane printed on an insulating substrate and an antenna plate having at least one antenna outlet. The ground plane and the antenna plate are separated by a dielectric, wherein the dielectric separating the plate from the ground plane is air. The antenna plate is constituted by a conductive plate of a shape adapted to the polarization of the transmission microwave vector. The antenna plate has at least two legs formed by stamping and folding which serve to support the plate on the substrate. Each leg passes through a respective orifice in the substrate, at least one of the legs serves not only for support purposes, but also constitutes an antenna outlet. There is a gap in the ground plane surrounding the orifice via which each leg of the antenna outlet passes through the substrate.

Abstract: A method for preparing streptogramins of the formula (I): ##STR1## wherein R.sub.1 is methyl or ethyl, R.sub.2 is H and X and Y together form an oxo radical, or R.sub.1 is ethyl, R.sub.2 and X are H and Y is H or OH, or else R.sub.1 is ethyl, R.sub.2 is OH and X and Y together form an oxo radical, by demethylation of a synergistin derivative of the formula (II): ##STR2## wherein R.sub.1, R.sub.2, X and Y are as defined above, by means of a treatment with a periodate in an acetic medium, followed by a treatment in an aqueous medium.

Abstract: This invention relates to a purified form of streptogramins, having of a combination of one or more group B components of streptogramins, of general formula: ##STR1## in which A.sub.1 is a radical of general formula: ##STR2## for which R' is H or OH and Y is H, a methylamino radical or a dimethylamino radical,R is an ethyl radical or, when R' is H, R can also represent--CH.sub.3, andR.sub.1 and R.sub.2 are H, or alternativelyA.sub.1 is a radical of formula: ##STR3## R is an isobutyl radical, and R.sub.1 is OH and R.sub.2 is --CH.sub.3,and one or more group A minority components of streptogramins, of general formula: ##STR4## in which R" is H or a methyl or ethyl radical, in the state of cocrystallizate, of a coprecipitate or of a physical mixture of the powders.

Abstract: This invention relates to a purified form of streptogramins, consisting of a combination of one or more group B components of streptogramins, of general formula: ##STR1## in which A.sub.1 is a radical of general formula: ##STR2## for which R' is H or OH and Y is H, a methylamino radical or a dimethylamino radical, R is an ethyl radical or, when R' is H, R can also represent --CH.sub.3, and R.sub.1 and R.sub.2 are H, or alternatively A.sub.1 is a radical of formula: ##STR3## R is an isobutyl radical, and R.sub.1 is OH and R.sub.2 is --CH.sub.3, and one or more group A minority components of streptogramins, of general formula: ##STR4## in which R" is H or a methyl or ethyl radical, in the state of cocrystallizate, of a coprecipitate or of a physical mixture of the powders.

Abstract: A payment system for transport vehicles includes a transmitter within each vehicle enclosure for transmitting information within the vehicle enclosure indicating a fare to be charged between successive vehicle stops as well as the location of the next vehicle stop. A ticket for each user includes a data processing unit, including a memory, and transceiver circuitry. Transceiver circuitry on the vehicle at a passenger boarding point interrogates the ticket to ensure a credit balance while also causing the ticket to store the location of the point of entry. Between successive stops, the transmitter equipment within the vehicle enclosure transmits signals indicating the fare to be charged for travel between successive stops, as well as the location of the next vehicle stop. The data processing unit on the ticket stores the location of the next vehicle stop while also decrementing the credit balance maintained in memory.