Abstract: The present invention relates to the field of therapeutic chemistry and more especially to the realization of new galenic forms intended to be applied on the skin.

Abstract: The invention relates to LH-RH peptide analogues with excellent affinity for LH-RH receptors, of the formula: A1-A2-A3-A4-A5-A6-HAA-A7-Pro-Z  (I) The invention also relates to the uses of said peptide analogues and to the pharmaceutical compositions containing them.

Abstract: The focal distance (f) of a laser (1) beam (2) is adjusted by projecting the beam (2) onto the centre of a mirror (3) of variable curvature and controlled by a depression circuit or by electrostatic forces. Thus the focus (4) can be displaced in a direction which is inaccessible to the usual means such as turning but rigid mirrors.

Abstract: The invention relates to compounds of the formula: in which R1, R2, R3, R4, R5, R6, n and X are as defined in the specification, and to pharmaceutical compositions containing them. These compounds are excellent progestogens which are devoid of residual androgenic activity.

Abstract: LH-RH analogues with excellent affinity for LH-RH receptors, of the formula A.sub.1 -A.sub.2 -W-A.sub.3 -A.sub.4 -SPL-A.sub.5 -A.sub.6 -Pro-Z(I) in which:-A.sub.1 is pGlu, AcSar or an aromatic D-amino acid;-A.sub.2 is a direct bond, His, DPhe, DpFPhe or DpClPhe;*W is an aromatic L- or D-amino acid;-A.sub.3 is Ala, Thr, Ser, DSer, Ser(OBzl) or MeSer;-A.sub.4 is Tyr, Phe, cPzACAla, L- or D-PicLys, L- or D-NicLys or L- or D-IprLys;*SPL is the spirolactam of formula: ##STR1## -A.sub.5 is an amino acid with a (C.sub.1 -C.sub.8)alkyl or (C.sub.3-C.sub.6)cycloalkyl side chain;-A.sub.6 is L- or D-(Arg, HArg, Lys, HLys, Orn, Cit, HCit or Aph), where L- or D-(Arg and HArg) can be substituted by one or two (C.sub.1 -C.sub.4)alkyl groups and L- or D-(Lys, HLys, Orn and Aph) can be substituted by an isopropyl, nicotinoyl or picolinoyl group; and*Z is GlyNH.sub.2, DAlaNH.sub.2, AzaGlyNH.sub.2 or --NHR.sub.1 where R.sub.1 is a (C.sub.1 -C.sub.

Abstract: A method of treating estrogen deficiencies in menopausal women by the oral administration of an estrogen alone followed by an estrogen progestogen combination and then a placebo.

Abstract: A device is provided for permitting real time measurement of the activity of dust confined in a ventilation duct. The device includes a radiation emitter for producing a beam for traversing the duct and a light radiation detector placed in front of the beam. The device also includes at least one gamma radiation detector placed facing the ventilation duct. An acquisition unit and a control unit are also provided for acquisition and processing of real time dust activity measurements. Particular utility is found measuring activity of dust leaving a furnace used for melting nuclear installation scrap.

Abstract: Subcutaneous implant for preventing conception for at least one year in women comprising an amount effect to prevent conception without suppressing intermontly bleeding of a steroid compound of formula I or formula II and a physiologically-tolerable pharmaceutical carrier.

Abstract: This invention relates to pharmaceutical compositions endowed with anti-progesteronic properties. This invention provides pharmaceutical compositions containing a pharmacologically effective amount of a 17.beta.-OR 17.alpha.-ethynyl-5.alpha.-androst-2-ene in admixture or conjunction with an innocuous pharmaceutical carrier or vehicle. The pharmaceutical compositions according to this invention are useful to prevent nidation or gestation.

Abstract: The invention relates to an isotopic separation process.This process consists of exciting molecules A by the absorption of a pulsed light beam, then exciting molecules X present in several isotopic forms up to their dissociation by a vibrational transfer between molecules A and X. Molecules A have a dissociation energy higher than that of molecules X. The duration and energy of the light pulses are such that the absorption time by molecules A is below the excitation time of molecules X. The temperature conditions are such that the thermal width of the vibration lines is at least close to the isotopic shift between the resonance lines of the two isotopic forms.

Abstract: The photogalvanic cell is particularly intended for converting solar energy into electrical energy.The photogalvanic cell comprises two electrodes in a liquid system comprising a photosensitive constituent, which is formed by the uranyl ion UO.sub.2.sup.2+. The liquid system comprises a second constituent which is a cation and more particularly Ce.sup.3+. The second constituent can also be an anion and in particular NO.sub.3.sup.- or SCN.sup.-. One of the electrodes is of polished platinum and the other of a chemically inert conductive substance, particularly graphite.The photogalvanic cell can also be coupled to a photovoltaic cell.

Abstract: The invention concerns solid solutions of oxides of iron and of a divalent metal other than cobalt Co.sup.2+ or, alternatively, of iron and of more than one divalent metal, including cobalt. Besides Co, the divalent metals may be Ni, Cu, Mn, Zn, Mg and Cd. Such solutions are prepared by precipitating a mixed oxalate containing iron and the other divalent metal or metals desired. This mixed oxalate is decomposed by heating it in open air at a progressively increasing temperature until carbon is eliminated but without forming rhomboedric oxide .alpha.-Fe.sub.2 O.sub.3. The pyrolyzed product is treated by hydrogen and steam at an elevated temperature to obtain a substituted magnetite, and this magnetite is oxidized in air at such a temperature as to avoid formation of .alpha.-Fe.sub.2 O.sub.3.

Abstract: The invention concerns the preparation of acicular particles of mixed oxalates of iron and of one or more metals of the group consisting of cobalt, nickel, copper, manganese, zinc, magnesium and cadmium. The method consists in preparing a first solution containing cations of iron and of the divalent metal or metals, and a second solution containing oxalic acid, one of the said solutions further containing Cl.sup.- and SO.sub.4.sup.2.sup.- anions and at least the second solution containing alcohol with preferably a light hydrocarbon. The first solution is poured very slowly (1 drop every 10 seconds) into the second one, conveniently at temperature below 0.degree. C, while the latter is strongly stirred. The concentration in alcohol is preferably maintained at at least 50% in the second solution during the whole pouring process which should be effected with at least a slight excess of oxalic acid.