Abstract: The present invention relates to a process to inhibit the expression of a target gene in cells or tissues by infecting said cells or tissues with viral particles.

Abstract: The present invention relates to a process for inhibiting the expression of a target gene in cells or tissue by infecting said cells or tissue with viral particles consisting essentially of ss RNA which expresses a sense RNA strand, and viral particles consisting essentially of ss RNA which expresses an anti-sense RNA strand, wherein the sense and anti-sense RNA strands comprise homologous nucleotide sequences to a portion of the target gene.

Abstract: Direct-current smelting furnace with control of deflection of the electric arc, which comprises an upper electrode (13) with relative return-flow lines and a plurality of bottom electrodes (11) positioned on the hearth of the furnace (12) and arranged in two or more assemblies, each assembly having its own controlled supply line connected to its own transformer (16), there being included downstream of each transformer (16) its own thyristor rectifier assembly (17) associated with its own means to control voltage (26), current (24) and firing angle (23), at least the lines supplying the bottom conductors (32) being at least partly screened in the vicinity of the melting furnace (12)

Abstract: A pharmaceutical preparation containing as active ingredient a compound of the formula ##STR1## or a therapeutically acceptable salt thereof in which formula R.sup.1 and R.sup.2 are the same or different and each selected from the group consisting of H, CF.sub.3, NO.sub.2, --COOCH.sub.3, --COOC.sub.2 H.sub.5, alkyl containing 1-7 carbon atoms, halogen, alkoxy, containing 1-5 carbon atoms, and alkanoyl containing 1-4 carbon atoms;R is selected from the group consisting of H, alkanoyl containing 1-4 carbon atoms, and carboalkoxy containing 2-6 carbon atoms; andR.sup.3, R.sup.4 and R.sup.5, which are the same or different, are each selected from the group consisting of H, CH.sub.3, C.sub.2 H.sub.5, OCH.sub.3, OC.sub.2 H.sub.5, OCH.sub.2 CH.sub.2 OCH.sub.3, and OCH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.3 ; provided that(a) at least one of R.sup.3, R.sup.4 and R.sup.5 is selected from the group consisting of CH.sub.3, C.sub.2 H.sub.5, OCH.sub.3, OC.sub.2 H.sub.5, OCH.sub.2 CH.sub.2 OCH.sub.3, and OCH.sub.2 CH.sub.2 OCH.