Abstract: A method for increasing the yield of leguminous products in a manner unaffected by weather is provided. According to the method, a leguminous plant is allowed to grow as it is up to a certain stage of cultivation. When podding begins, lateral branches and leaves on the branches, which absorb nutrients in a large amount, are eliminated so that nutrients can be utilized exclusively for growing pods containing seeds. Thus, the method accelerates ripening of pods and ripens seeds borne in pods growing on up to upper branches. After germination of sown seeds of a leguminous plant and subsequent growth of seedlings, when podding begins on the lowermost branch, branches extending outward as viewed from the pods are cut off together with leaves on the branches, thereby allowing intensive utilization of nutrients for ripening pods containing seeds.

Abstract: An audio system includes a speaker unit having an opening in its front surface supporting a speaker and a diffuser with a reflecting surface detachably attached to the speaker unit and positioned opposite to the speaker and in front of the opening such that sound waves from the speaker are diffused by the reflecting surface of the diffuser to propagate radially. A multi-channel amplifier for driving the speaker includes a compensating circuit for correcting the output level and frequency characteristic of the system when the diffuser is attached.

Abstract: A process for producing a polyarylate comprising the step of reacting (a) an aromatic dicarboxylic acid, (b) a bisphenol diacetate and (c) an aliphatic carboxylic acid anhydride of an aromatic dicarboxylic acid, to produce a polyarylate containing acid anhydride bonds. The polyarylate exhibits a high impact strength as well as a high weld strength, when formulated in a resin composition together with a polyamide.

Abstract: A blowing tuyere to be embedded in a bottom of side wall of a molten metal bath container for blowing a gas thereinto, the tuyere including a cylindrical core body fixedly located at the center of the tuyere and an outer tube fixed concentrically around the core body with a gap of a predetermined width to form an annular blowing passage therebetween.

Abstract: An aromatic polyester copolymer consisting of 10 to 90 mol % of a recurring unit of the formula: ##STR1## and 90 to 10 mol % of a recurring unit of the formula: ##STR2## and having a logarithmic viscosity number of at least 0.3 as measured in a mixture of phenol and tetrachloroethane (6:4 in weight ratio) at a concentration of 1 g/100 cc at 25.degree. C. and having a terminal carboxyl content of about 80 mol eq./ton or less. This aromatic polyester copolymer has high durability under dry and moist heat as well as high resistance to water crazing and hence can be fabricated into useful articles by various molding techniques.

Abstract: A resin composition consisting essentially of (A) an aromatic polyester-polycarboxylic anhydride and (B) a polyamide. An article molded from the resin composition exhibits high heat resistance, mechanical properties and moldability. It is particularly resistant to cracking upon impact and is also resistant to breaking at a thin-walled portion.

Abstract: An aromatic copolyester composition comprising (A) an aromatic copolyester derived from terephthalic acid, isophthalic acid and/or a bisphenol and (B) a metal salt of an organic carboxylic acid, which is suitable for preparation of molded articles having superior mechanical properties and fire retardancy as well as superior thermal stability and reduced crazing.

Abstract: A resin composition consisting essentially of(A) an aromatic copolyester derived from (1) a mixture of terephthalic acid and isophthalic acid and/or the functional derivatives thereof and (2) a bisphenol and/or the functional derivatives thereof;(B) a polyamide; and(C) a compound of a metal of Groups IVB, VB, VIB, VIIB, VIII, IB, IIB, IIIA, IVA or VA of the Periodic Table.An article molded from the resin composition exhibits high heat resistance, mechanical properties and moldability. It is particularly resistant to cracking upon impact, and is also resistant to breaking at a thin walled portion.

Abstract: A resin composition comprising: (a) an aromatic co-polyester comprising terephthalic acid, isophthalic acid and a halogen-free bisphenol; and (b) a halogen-containing aromatic co-polyester containing terephthalic acid, isophthalic acid and, at least in part, a bisphenol bearing a halogen substituent(s) as a comonomer. Molded articles prepared from such a resin composition possess excellent mechanical properties, electrical properties and flame-retardant capabilities.