The novel antibiotic, and complexing agents B-35251A, B-35251B, and B-35251C, the known antibiotic daunomycin, mixtures of these various substances -- especially that comprising B-35251A and B-35251B and known as mitocromin; their microbiological production by a new strain of Streptomyces viridochromogenes, by Streptomyces griseo-laqueus, a new species of Streptomyces, and by Streptomyces sp. ATCC 21345, and methods for their recovery, concentration, isolation, and purification are described.

An upright centrifuge basket has a lower end and an upper end and its interior diverges upwardly in cross-section. An accelerator cone is mounted in the basket in the region of its lower end to accelerate material being centrifuged. An electromotor is above the basket, extending in part into the same and having an output shaft which is connected with the accelerator member for rotating the basket which is thus suspended from the electromotor. The electromotor has cooling fins and is surrounded b...

A novel alkaline cellulase characterized by being an enzyme having an optimal pH of about from 8 to 10 at a temperature of 40.degree. C and a method for preparing thereof characterized by fermentation of a strain of microorganism selected from the group consisting of Bacillus N.sub.1 and Bacillus N.sub.4 in an alkaline culture medium containing a carbonate.

A semiconductor laser and methods of making same. The semiconductor laser is in the form of a diode, preferably a heterostructural diode. The diode includes a light-emitting active region. A layer of one conductivity type is disposed at a small distance from said light-emitting active region. Means are provided adjacent the layer of one conductivity type to block current flow through laterally extending portions of the layer for confining the curent to a narrow path through the layer. The method...

A calender and a method of operating the same by means of a pair of upper hydraulic units the pistons of which are hydraulically movable in both directions in their cylinders. During the normal operation of the calender, these pistons exert a loading pressure in the downward direction upon the vertically slidable bearings of the highest calender roll, while the bearings of the lowest roll rest in a fixed position on the piston rods of a pair of lower hydraulic units which are hydraulically movab...

A plurality of filaments of polyolefin are formed into a strand by twisting. The twisted strand is heat set and then twisted with other strands to form a rope which retains its tensile strength and reduces elongation.

A boiler, in particular a hot-water or central-heating boiler, is made with elements defining on one side a component part of a fire duct and on the other side a component part of a water duct. This permits the elements to be cast without using sand cores, thus allowing more scope in design and permitting the use of light metals for higher heat transfer efficiency.

An air conditioning system for an enclosure in which a heat exchange medium flows in a looped pipe along a wall of the enclosure to and from a temperature regulating unit for heating or cooling the heat exchange medium, the return loop of the pipe being enclosed within an air ventilating shaft spaced from said wall and being provided with fins for directing the air downwardly while the other pipe loop is provided with fins for directing the conditioned air upwardly through an operture in the wal...

One form of the game consists of small playing pieces with markings on opposite faces representing the usual playing card markings of diamonds, clubs, hearts and spades. A game assembly contains two duplicate game sets to provide a separate set for each of two opposing players or teams. One of the sets may be provided with varients in color, hue or shape to avoid intermixing, but are otherwise identical in indicia arrangement. Each of the two sets has twenty-five playing pieces or "chips," made ...

A shank, similar to the shank of a bolt and straight from end to end, is threaded along one end and has its other end knurled or otherwise processed to disturb the surface continuity of the metal, thus providing an irregular surface. A head having a shoulder portion provided with an axial opening is then pushed downwardly into position over the knurled end of the shank. Inward radial pressure is then exerted on the shoulder portions of the shank to cause the metal around the axial opening thereo...