Abstract: The invention concerns steroid compounds of general formula (I) in which n=2, 3, either R1 and R2═H, (C1-C4) alkyl, or R1 and R2 form with nitrogen a heterocyclic compound, X═OH optionally esterified, Y═(C1-C4)alkyl, and their additive salts, the method for preparing them, their application as medicine and the pharmaceutical compositions containing them.

Abstract: A device improving the combustion of a fuel by a gaseous oxidant includes a fuel intake, an oxidant intake and apparatus for keeping naphthalene in solid form in the gaseous oxidant intake to load it with naphthalene vapors as it flows towards the combustion chamber. The apparatus for keeping the naphthalene in the gaseous oxidant current includes a cartridge filled with naphthalene and having apertures forcing the oxidant gas to pass through it directly along a direction coinciding with that of the flow of the oxidant gas to the combustion chamber.

Abstract: A particular subject of the invention is the products of formula (I): ##STR1## in which: R.sub.1 and R.sub.2 represent in particular cyano and trifluoromethyl,R.sub.3 represents in particular alkyl, alkenyl or alkynyl, optionally substituted by one or more halogen, cyano or hydroxyl radicals,R.sub.4 and R.sub.5 either represent in particular methyl optionally substituted by fluorine,or form in particular a cyclohexyl radical,X and Y represent in particular oxygen,as well as their salts and isomers.

Abstract: A method of treating menopause or perimenopause without estrogenic activity at the uterine level in women comprising administering to women an amount of a steroid of the formula ##STR1## wherein the substituents are defined as in the specification sufficient to treat menopause or perimenopause symptoms without estrogenic activity at the uterine level.

Abstract: The present invention relates to a DNA expression vector comprising a T.alpha.l .alpha.-tubulin promoter operatively linked upstream to a marker gene sequence relative to the direction of transcription in a eukaryotic expression vector adapted to be introduced into a mammal, or ancestor of the mammal at an embryonic stage and said promoter is controlling transcription of the marker gene. The present invention also relates to a method for testing material suspected of promoting neurogenesis and neuronal growth which comprises exposing a transgenic mammal according to the present invention said material and detecting said expressed marker gene as an indication of neurogenesis and neuronal growth.

Abstract: A block is produced by juxtaposition and joining of at least one plate made of tool steel and of at least one plate made from mild steel. The block is hot rolled and then it is cooled to a temperature below 200.degree. C. The rolled block is tempered at a temperature above 450.degree. C. after cooling. The clad sheet obtained includes a layer made of tool steel having a tempered martensitic structure and containing primary carbides and a fine dispersion of secondary carbides.

Abstract: A nitriding process and nitriding furnace therefor wherein the parts to be treated are maintained at floating potentional in a vacuum furnace (9), current being provided to a metal screen (5) cathode surrounding the parts to be treated, the necessary heat being provided by radiation from screen (5) whereby nitriding gas is injected into the furnace such that it has to flow through screen (5) where the plasma necessary for the nitriding reaction is generated by glow discharge the plasma flowing around and reacting with the parts to be treated before it is evacuated at the bottom of furnace (9) through vacuum/exhaust conduit (2).

Abstract: A method of treating cholesterol without estrogenic activity at the uterine level in women comprising administering to women an amount of a steroid of the formula ##STR1## wherein the substituents are defined as in the specification without estrogenic activity at the uterine level.

Abstract: Novel compounds of the formula ##STR1## wherein the substituents are defined as in the application and their salts with non-toxic, pharmaceutically acceptable acids and bases having 5-.alpha.-reductase inhibiting activity and a process and intermediates for their preparation.

Abstract: Novel imidazoles of the formula ##STR1## wherein the substituents are as defined in the disclosure and their non-toxic, pharmaceutically acceptable addition salts with acids and bases having antiandrogenic activity.

Abstract: A block is produced by juxtaposition and joining of at least one plate made of tool steel and of at least one plate made from mild steel. The block is hot rolled and then it is cooled to a temperature below 200.degree. C. The rolled block is tempered at a temperature above 450.degree. C. after cooling. The clad sheet obtained includes a layer made of tool steel having a tempered martensitic structure and containing primary carbides and a fine dispersion of secondary carbides.

Abstract: A digital filter for noise reduction selects between local variances obtained from adjacent pixels in the same frame and adjacent pixels in the same field. In one embodiment, the digital filter includes a filter modified from an adaptive Wiener filter which preserves edges and smoothes smooth areas of the image. A high compression ratio can be achieved in very smooth regions of the image without introducing artifacts.

Abstract: Novel compounds of the formula ##STR1## wherein the substituents are defined as in the application and their salts with non-toxic, pharmaceutically acceptable acids and bases having 5-.alpha.-reductase inhibiting activity and a process and intermediates for their preparation.

Abstract: A steel composition useful for the manufacture of articles and components having high abrasion resistance.

Abstract: A 19-nor-steroid having a formula selected from the group consisting of ##STR1## wherein the A and B rings have a structure selected from the group consisting of ##STR2##

Abstract: Disclosed is a method of inducing anti-estrogenic activity in warm-blooded animals by the administration of a compound of the formula ##STR1## wherein the substituents are as defined in the specification.

Abstract: Described herein are novel imidazoles of the formula ##STR1## wherein the substituents are as defined in the disclosure and their non-toxic, pharmaceutically acceptable addition salts with acids and bases having antiandrogenic activity.

Abstract: A compound selected from the group consisting of a compound of the formula ##STR1## wherein R is selected from the group consisting of ##STR2## and R.sub.b --NH--, Ra is an organic radical, Ri and Rj are individually selected from the group consisting of hydrogen, aliphatic hydrocarbon, aromatic hydrocarbon and heterocycle or taken together with the nitrogen atom to which they are attached form an optionally substituted ring, Rb is selected from the group consisting of carbocyclic aryl and heterocyclic aryl, both optionally substituted, R.sub.1A is selected from the group consisting of ##STR3## and ##STR4## are individually selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, Z.sub.A is selected from the group consisting of a simple bond, --O-- and optionally oxidized sulfur, R.sub.

Abstract: Intermediate compounds of a formula selected from the group consisting of ##STR1## which are useful intermediates for the preparation of final products of the formula ##STR2## wherein the substituents are defined in the specification.

Abstract: A compound of the formula ##STR1## wherein R.sub.1 is --CN, --NO.sub.2 or halogen, R.sub.2 is --CF.sub.3 or halogen, --A--B-- is of ##STR2## X is --O-- or --S--, R.sub.3 is hydrogen, alkyl, alkenyl or alkynyl of up to 12 carbon atoms, aryl and aralkyl of up to 12 carbon atoms, all optionally substituted by --OH, halogen, --SH, --CN, acyl and acyloxy of up to 7 carbon atoms, --aryl, --O--aryl, --O--aralkyl --S-- aryl of up to 12 carbon atoms the aryl and aralkyl being optionally substituted by halogen, --CF.sub.3, alkyl, alkoxy, alkenyl, alkenyloxy, alkynyl or alkynyloxy with the sulfur being optionally oxidized to sulfone or sulfoxide, free, esterified, amidified or salified carboxy, --NH.sub.