The device for measuring stresses applied to a drilling tool comprises a removable instrument socket (2) secured by means of protuberances (15, 16) thereon to the wall of a compartment formed thereby in a shaft (OM) such as to make fast said socket and said shaft in two transverse planes (12, 13) and as to transmit to said socket the strains occurring in the shaft in response to the stresses to be...

A torque-proportioning differential of the helical pinion type includes a housing having a body section to one end of which is removably connected a cover section, the one body section end being machined to define a central longitudinal bore and a plurality of circumferentially spaced pairs of longitudinal pinion cavities in longitudinal communication with each other and with the central bore, res...

A process for automatically going into the mode for increased suction extraction of the gases emitted by the tanks of series for the production of aluminium by igneous electrolysis using the Hall-Heroult process, each tank being closed around its periphery by a plurality of removable covers which are disposed in substantially sealed relationship with each other and between each thereof and their s...

O-Alkylated derivatives of macrolide antibiotics which exhibit improved antibiotic activity can be prepared from parent macrolides having a plurality of reactive hydroxyl groups via a two-step process involving, first, protective esterification of the hydroxy-amino sugar moiety, followed by alkylation at one or more of the remaining hydroxyl groups.

Nouveaux dérivés de gangliosides fonctionnels comprenant des dérivés ester, amide et peracylés de gangliosides, leur méthode de préparation, des compositions pharmaceutiques les comprenant et leur utilisation dans la thérapeutique des pathologies du système nerveux périphérique et notamment dans la stimulation des phénomères de bougeonement de la cellule nerveuse, et dans l'activation des enzymes ...

Préparation pharmaceutique, contenant le ganglioside GM1 ou un de ses dérivés d'esters internes et procédé d'augmentation de l'écoulement sanguin cérébral chez des victimes ayant subi une attaque, par administration de GM1 ou de son dérivé d'ester interne.; A pharmaceutical preparation containing the ganglio-side GM1 or an inner ester derivative thereof and a method for increasing cerebral blood f...

Mélange de gangliosides constitué des gangliosides GM1, GD1a'GD1b et GT1b, possédant une activité de soulagement de la douleur ou analgésique significatif. Ce mélange est donc utile au traitement de la douleur occasionnée par diverses neuropathies périphériques et le mélange est plus efficace que les gangliosides individuels qui constituent le mélange.; A ganglioside mixture, comprised of the gang...

Improved absorbent article for diapers and the like comprising an outer backing sheet of a water impervious or repellant material, an optional inner top sheet having fluid passing properties, an absorbent pad therebetween, and a second water impervious or repellant interlayer sheet disposed between the top sheet and the absorbent pad. The interlayer has a plurality of spaced small holes therethrou...