Abstract: In order to increase the efficiency of a gravitational power plant for generating electricity, comprising at least one turbine and one drive cylinder having a piston weight that can move therein, which piston weight can be alternately lifted by the hydrostatic pressure in a low-lying water-pressure chamber, the water-pressure chamber according to the invention is divided by at least one partition into at least two, preferably four, sectors, wherein the particular piston weight is lifted to the maximum height at the end of the piston stroke in all sectors. Preferably, three such partitions are provided at equal distance from each other.

Abstract: Epoxycycloalkylalkanecarboxylic acids of the general formula I ##STR1## wherein R denotes a hydrogen atom or a lower alkyl group, Y denotes an oen atom (--O--) or a methylene group (--CH.sub.2 --), m denotes an integer from 0 to 6, n denotes an integer from 0 to 6 and p denotes an integer from 2 to 11 (and m cannot be 0 or 1 if Y represents an oxygen atom, and the sum of the numbers m, n and p is an integer from 6 to 15), and also the salts of the carboxylic acids, are new compounds. They exhibit a hypoglycaemic action on warmblooded animals. Processes for the preparation of the new compounds are described.

Abstract: Quinolinone-alkanecarboxylic acids of the formula I ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are identical or different and denote hydrogen atom, a halogen atom, a hydroxyl group, an alkoxy group with 1 to 4 carbon atoms, an amino group, a dialkylamino group, the alkyl radicals having 1 to 4 carbon atoms, or a nitro group,R.sup.4 and R.sup.5 are identical or different and denote a hydrogen atom, a halogen atom, an alkoxy group with 1 to 4 carbon atoms, a hydroxyl group, an amino group or a dialkylamino group, the alkyl radicals having 1 to 4 carbon atoms, orR.sup.4 and R.sup.5 together denote a methylenedioxy group bonded to two adjacent ring carbon atoms, and A denotes an alkylene group with 1 to 5 carbon atoms,and esters thereof with alkanols with 1 to 5 carbon atoms, and salts thereof with inorganic and organic bases are new compounds. They display a hyperglycaemic action in warm-blooded animals. Processes for the preparation of the new compounds are given.

Abstract: Phenalkoxyalky- and phenoxyalkyl-substituted oxiranecarboxylic acids of the formula ##STR1## wherein R.sup.1 denotes a hydrogen atom (--H), a halogen atom, a lower alkyl group, a lower alkoxy group, a nitro group or a trifluoromethyl group,R.sup.2 has one of the meanings of R.sup.1,R.sup.3 denotes a hydrogen atom (--H) or a lower alkyl group,Y denotes --O--(CH.sub.2).sub.m --,m denotes O or an integer from 1 to 4, andn denotes an integer from 2 to 8, with the proviso that the sum of m and n is an integer from 2 to 8,and the salts of the acids are new compounds. They display a hypoglycaemic action in warm-blooded animals. Processes for the preparation of the new compounds and of the intermediate products required for their preparation are described.

Abstract: Substituted oxiranecarboxylic acids of the formula ##STR1## wherein R.sup.1 denotes a hydrogen atom (--H), a halogen atom, a hydroxyl roup, a lower alkyl group, a lower alkoxy group or a trifluoromethyl group,R.sup.2 has one of the meanings of R.sup.1,R.sup.3 denotes a hydrogen atom (--H) or a lower alkyl group andn denotes an integer from 1 to 5, andthe salts of the acids are new compounds. They display a hypoglycaemic action in warm-blooded animals. Processes for the preparation of the new compounds and of the intermediate products required for their preparation are described.

Abstract: The invention relates to .omega.-[2-(N-lower alkyl-benzamido)-phenyl]-alkanoic acids, their use and preparation, and medicaments containing them.