Abstract: Fertilizers coated with coating layer having a controlled moisture permeability and a controlled temperature dependency of moisture permeability are presented by the production method which comprises ejecting hot drying air to the spout of granular fertilizer and spraying a hot solution of polyolefin type resin, ethylene-vinyl acetate copolymer or vinylidene type resin upon said fertilizer granules and drying said fertilizer granules upon being sprayed with solution having the property capable of forming a solution while it is hot but turning into jelly-like gel when it is cooled but as a most characteristic feature of this method uniformly dispersed fine powder is incorporated in said drying air or in said solution so as to have a coated layer of said resin containing uniformly distributed fine powder.

Abstract: A corrosion-inhibiting method for protecting steel materials in concrete or mortar, characterized in that a nitrite, a compound of general formula NH(R)CH.sub.2 COOH (wherein R represents a H atom or an alkyl group having 1 to 4 carbon atoms) or salts thereof, and a hydrazine hydrate are incorporated into the concrete or mortar is provided. The corrosion-inhibiting method is particularly available for construction of steel reinforced concrete structures in which chloride-containing sea sand is used as aggregates and does not affect a property of the concrete or mortar.

Abstract: The voltage controlled oscillator (VCO) in a phase-locked loop carrier recovery circuit is provided with two control signals, one based upon a phase error between the phase modulated carrier and VCO output and the other based upon a frequency error between the phase modulated carrier and VCO output.

Abstract: Isovaleric acid ester derivatives and the optical isomers thereof expressed by the general formula I: ##STR1## wherein, R.sub.1 represents hydrogen, methyl group or chlorine atom, andR.sub.2 represents hydrogen or cyano group.

Abstract: A low temperature calcined porcelain composed mainly of a vitreous substance and including aluminum oxide, a clay component, a binder and, if necessary, a coloring agent is disclosed. This porcelain is prepared according to a process comprising adding water to a mixture composed mainly of a vitreous substance and including alumina, silica or a naturally occurring composition of alumina and silica, a binder and, if necessary, a coloring agent, molding the mixture into an optional form by compression molding or by kneading molding, and calcining (heating and hardening) the molded article at a relatively low temperature.

Abstract: In an induction machine having power windings disposed coaxially about the iron core thereof, means for reducing an axial mechanical force produced in any given winding by the interaction of the radial components of leakage flux produced at a time of short-circuiting and an electric current flowing in the given winding at that time. The reducing means includes a plurality of loops mounted respectively at the ends of the given winding and adapted to link the radial components of leakage flux produced at the ends of the given winding at the short-circuiting to generate induced currents in said loops. These currents produce magnetic flux for cancelling the radial components of leakage flux, respectively.

Abstract: Granular slow-releasing fertilizers completely coated with water-resisting resin are produced in such a manner that the coated granules do not stick together, through one step operation by spraying a solution of the resin which has the property capable of maintaining the solution state while it is hot but turning into jelly-like gel when it is cooled, on granules of fertilizer and drying the said granules with a high speed drying hot air on the spot upon being sprayed with the solution of the resin.

Abstract: In an induction machine having power windings disposed coaxially about the iron core thereof, means for reducing an axial mechanical force produced in any given winding by the interaction of the radial components of leakage flux produced at a time of short-circuiting and an electric current flowing in the given winding at that time. The reducing means includes a plurality of loops mounted respectively at the ends of the given winding and adapted to link the radial components of leakage flux produced at the ends of the given winding at the short-circuiting to generate induced currents in said loops. These currents produce magnetic flux for cancelling the radial components of leakage flux, respectively.