Abstract: Feeds comprising unicellular algaes whose cell wall are disrupted are provided as the feeds for larvae of crustaceans and shellfishes to be cultivated. With such feeds, it is possible to achieve the rates of survival and growth equivalent to, or higher than, those achieved with untreated diatom.

Abstract: The disclosures relates to a tube coupling (10) for a tube (11) having a body (12) with open ended throughway (13) to receive the tube and a collet (21) in the open end of the throughway having resilient arms (23) engaging a tapered cam surface (20) in the body to clamp the ends of the arms against a tube extending through the collet into the body to lock a tube in the body.The body has a cylindrical outer surface and a cylindrical cover (30) encircles and is slidable along the body. One end of the cover has an end wall (32) extending across the end of the body opposite the open end of the throughway with an aperture (33) through which the tube extends. The other end of the cover has an internal annular projection (35) which snaps over the end of the cylindrical body to retain the cover on the body while permitting the cover to slide linearly along the body.

Abstract: The active support substance and the adsorbent for chromatography, which have got all of the properties desired for affinity chromatography, can be constituted by a porous copolymer comprising gel copolymer which is principally composed of (A) a glycidyl monovinylester or glycidyl monovinylether and (B) alkyleneglycol divinylester, and combination groups to be bound to ligands through a covalent bond, the (A) component being crosslinked by the (B) component, and the combination groups being bound to epoxy groups of the (A) component.

Abstract: A feedstuff for cultivating Artemia as a feedstuff for larvae of cultivated fishes or crustaceans is provided, which feedstuff for cultivation is a product obtained by treatment of breaking the cell wall of monocellular algae, the thus obtained Artemia having a high survival rate, the body length thereof being large and the content of eisacopentaenoic acid and docosahexaenoic acid in the total fatty acids therein being much higher than those of conventional feedstuffs.

Abstract: A process for producing a cyclic diamine which comprises reacting a diamine of the formulaR--HN--R'--NH--R (II)wherein R represents a lower alkyl group and R' represents a lower alkyl group-substituted dimethylene group, trimethylene group, a lower alkyl group-substituted trimethylene group, tetramethylene group or a lower alkyl group-substituted tetramethylene group with urea in the presence of a polar solvent and at 180.degree. C. or higher, to obtain a cyclic urea ##STR1## wherein R and R' are each as defined above, the production yield being more improved by carrying out the initial period reaction at 140.degree. C. or lower.

Abstract: A compressor and suction accumulator assembly wherein the suction accumulator is secured in close proximity to the compressor by way of a strap. The strap is engaged with the housing of the compressor and extends circumferentially around the accumulator casing. A spring loop is formed on the strap to establish spring tension at the engagement of the strap and the compressor housing. The spring loop has opposing sides spaced apart a predetermined distance, with each of the opposing sides having a hole disposed therein which is axially aligned with the hole in the opposite side. A screw is received in one hole and extends to the hole in the other side. Rotating the screw results in a constriction of the distance between the opposing sides of the spring. Spring tension is imparted to the strap and a tight connection is created between the accumulator and the compressor.

Abstract: An electrically conductive powder having good stability against oxidation, good storage stability, good in anti-migratory action and capable of constituting electrically conductive composition having high electrical conductivity and good resistance to heat and the wet, may be constituted by copper particles, a silver coating material coating a part or the total of the copper particles and a titanate coupling agent combined to the copper particles and/or the silver coating material.

Abstract: An arrangement for a wall, for example, for dividing up a room or for constructing an exhibition stand or a reception kiosk, etc. The arrangement comprises a number of preferably individually executed, mutually interchangeable panel sheets. These are so arranged as to be secured by means of connecting elements designed to engage on the opposing edges of adjacent panel sheets. Characteristic features of the invention are that the panel sheets are executed along at least two opposing edges with longitudinal channels, and that the aforementioned connecting elements, which are at least two in number on the edge of each panel sheet, are so arranged as to connect the panel sheets with a space relative to one another and are executed with internal opposing grooves. When the connecting elements are installed between the two panel sheets, the grooves will coincide with the channels, so that a strip-shaped decorative element can be inserted in the channels and the grooves and can occupy said space.

Abstract: An aqueous solution containing amino acids of which the solubility in water at isoelectric point is low, can be highly concentrated by means of semipermeable membranes in the presence of a water-soluble organic solvent while increasing the solubility by adjusting a pH.

Abstract: Disclosed is a toner composition for the electrophotography, which comprises as a main component a urethane-modified polyester resin obtained by reacting a polyester resin with an isocyanate compound, in which the mole-equivalent ratio between the hydroxyl group of the polyester resin and the isocyanate group of the isocyanate compound is within a specific range and the glass transition temperature of the obtained resin is within a specific range.This composition has a good fixing property at a low temperature and a good offset resistance at a high temperature, and this composition is especially excellent in the form of a mixture with a polymer having a relatively low molecular weight.