A device for joining together two ends of a yarn in order to recreate the initial structure of the yarn comprises two heads provided with radial slots and fixed to rods which are rotatable in order to take up the yarn by means of the slots and to wind the yarn about the rods. The free ends of the yarns are untwisted and subjected to electrostatic fields created between the heads and an annular ele...

A machine element, in particular a vibration isolator, is manufactured by an annular elastic spring body 19 being formed between and vulcanized onto a downwards directed edge portion 11 of a bowl-shaped upper part 10 and an upwards directed inner sleeve portion 17 of a lower part 15. The annular surface portion 20 of the elastic spring body, which is directed towards the bottom portion 12 of the u...

PURPOSE:To enable one working vehicle to play two roles for backhoe and damper by a method in which a turn table on which a backhoe is mounted is provided in a 180 deg. or more turnable manner to the front upper part of a truck and a loading box is provided on the rear upper part. CONSTITUTION:A loading box 2 is provided on the rear upper part of a truck 1, an engine 3 and a running driver 4 are ...

PURPOSE:To obtain a light weight contact start and stop type head used for a magnetic disc device, in which adhesion hardly takes place even with the disc and a core slider in contact with each other for a long time, by adopting different curved-shape for the floating surface of a center rail and a side rail of the core slider. CONSTITUTION:A radius Ralpha is set to a suitable value taking a lengt...

To separate the racemate (R,S)-cysteine, the racemate is condensed in an inert solvent with an enantiomerically enantiomeric monosaccharide of the group of aldoses having 4 to 7 carbon atoms to form the corresponding 2-substituted thiazolidin-4-carboxylic acid and the mixture of diastereomers obtained separated from each other. Subsequently, the isolated unitary diastereomers are reacted in an ine...

NEW MATERIAL:A compound shown by the formulaI{1-4 R' of 4 R' are -CHRSO3M[R is H, alkyl, (substituted)phenyl; M is H or NH4<+>, alkaline(earth) metal], the residue R' is H}. EXAMPLE:Sodium 3-O-demethylistamycin B-mono-N-methanesulfonate. USE:An antibiotic having low toxicity. PROCESS:3-O-Demethylistamycin B shown by the formula II or its acid addition salt is reacted with an aldehyde shown by the ...

The anthracycline glycosides I (X = H or OH, R1 = H or CH3, R2 = H or OCH3, R3 = H or OCH3, R2 = R3) and their pharmaceutically acceptable acid addition salts have antitumour properties. They are prepared from 4-demothoxy-daunomycinone or 2,3-dimethyl-4-methoxy-daunomycinone by condensation with an appropriate N-protected hexopyranosyl chloride and removal of the protecting group and, in t...

Olefins are prepared by thermal cleavage of hydrocarbons in the presence of steam in an indirectly heated tubular furnace in which hydrocarbons are employed for the thermal cleavage which have been prepared by reacting carbon oxide and hydrogen on supported ruthenium catalysts.

By means of the nozzle, three gaseous curtains are formed converging on the surface of the substrate heated to a temperature of about 600 DEG C. which is driven in translatory movement, the intermediate curtain being constituted by a gaseous reactant or a reactant diluted in a carrier gas and the two lateral curtains being constituted by another naturally gaseous reactant or reactant diluted in a...

Benzodioxine compounds of the formula: in which Het is a five- or six-membered heterocyclic radical containing from one to three hetero atoms, and from one to three double bonds, optionally substituted by one or more alkyl or alkoxy radicals each from C1 to C5. These compounds and physiologically tolerable acid addition salts thereof may be used as medicines, especially in the treatmen...

NEW MATERIAL:A triazole-based compound shown by the formulaI[X is C, or H; R<1> and R<2> are H, alkyl, alkoxyalkyl, haloalkyl, phenylalkyl, phenyl which may have halogen, R<1> and R<2> are linked to give (CH2)n; n is integer of 2-5]. EXAMPLE:4-( 2,4-Dichlorophenyl )-4-( 1,2,4-triazole-1-yl )methyl-2,2-dimethyl-1,3-dioxolane. USE:An agricultural and gardening fungicide, plant growth regulator, or h...

NEW MATERIAL:A compound shown by the formulaI[m is 0 or integer of 1-5; n is integer of 1-10; Y is H, pyridyl lower alkyloxy, pyridyl lower amino, -NHCOR (R is cyclohexylamino or phenylamino which may be substituted with lower alkyl)]. EXAMPLE:4'-[5-(1-Imidazolyl)pentyloxy]phenyl 3-pyridinomethyl ether. USE:A remedy and preventive for arteriosclerosis, cerebral infarct, transient ischemic attack, ...

The present invention provides a beta -lactam antibiotic having a sulphonic acid substituent or salt thereof at the 1-position and a hydroxymethylsubstituent at the 3-positions.