Abstract: A sintered body containing polycrystalline grains of a metal oxynitride containing at least two metal elements, wherein Ba and at least one metal element of a crystal phase of the sintered body are contained in a triple point that is not a void between the polycrystalline grains. A method for producing the sintered body includes sintering a mixture of at least a metal oxynitride as a main component and a sintering aid containing cyanamide in an atmosphere containing nitrogen or a rare gas or in a reduced-pressure atmosphere of 10 Pa or less while applying a mechanical pressure with a retention time at a maximum heating temperature during the sintering set to 1 minute to 10 minutes.

Abstract: Provided is a novel IgA secretion promoter useful as a mucosal immunity stimulation agent and a method of promoting IgA secretion in a body of animal to stimulate mucosal immunity. A significant action of promoting IgA secretion was observed in oral administration of indigestible dextrin.

Abstract: A vehicle body frame of a motorcycle includes a head pipe, a pair of main frame sections extending rearwardly from the head pipe, a pair of pivot plates joined to end portions of the main frame sections, and a crossmember arranged between the pivot plates. In such vehicle body frame, the crossmember is arranged between upper end portions of the pivot plates such that the upper end portions of the pivot plates are sandwiched between the crossmember and rear end portions of main frame sections so that at least a portion of the crossmember overlaps a joint portion between the main frame sections and the pivot plates as viewed in a side view. Such structure of the vehicle body frame ensures the rigidity of connecting portions where the crossmember is connected to pivot plates without making the vehicle body frame heavy and thick.

Abstract: A head pipe includes a pipe portion and a bracket portion contiguously formed on a rear portion of the pipe portion wherein front end portions of the main frames and a front end portion of the down frame are jointed to the bracket portion. A widthwise center line of the main frames in the vertical direction is directed toward an intermediate portion of the pipe portion in the vertical direction in a side view. An upper surface extension line and a lower surface extension line on the extension in the frontward direction of an upper surface and a lower surface of the main frames pass between an upper end and a lower end of the pipe portion as viewed in a side view. The down frame is inclined to be directed towards the intermediate portion of the pipe portion in the vertical direction as viewed in a side view.

Abstract: A head pipe includes a pipe portion and a bracket portion contiguously formed on a rear portion of the pipe portion wherein front end portions of the main frames and a front end portion of the down frame are jointed to the bracket portion. A widthwise center line of the main frames in the vertical direction is directed toward an intermediate portion of the pipe portion in the vertical direction in a side view. An upper surface extension line and a lower surface extension line on the extension in the frontward direction of an upper surface and a lower surface of the main frames pass between an upper end and a lower end of the pipe portion as viewed in a side view. The down frame is inclined to be directed towards the intermediate portion of the pipe portion in the vertical direction as viewed in a side view.

Abstract: A vehicle body frame of a motorcycle includes a head pipe, a pair of main frame sections extending rearwardly from the head pipe, a pair of pivot plates joined to end portions of the main frame sections, and a crossmember arranged between the pivot plates. In such vehicle body frame, the crossmember is arranged between upper end portions of the pivot plates such that the upper end portions of the pivot plates are sandwiched between the crossmember and rear end portions of main frame sections so that at least a portion of the crossmember overlaps a joint portion between the main frame sections and the pivot plates as viewed in a side view. Such structure of the vehicle body frame ensures the rigidity of connecting portions where the crossmember is connected to pivot plates without making the vehicle body frame heavy and thick.

Abstract: Novel diphenyl ether hydrazine derivatives, particularly 2-nitro-5 (nucleus-substituted phenoxy) phenylhydrazine derivatives are provided. They are useful as a selective herbicide having a high herbicidal activity and residual efficacy.

Abstract: The present invention relates to 2-arylethyl ether or thioether derivatives represented by the following general formula [I]: ##STR1## wherein Ar stands for an aryl group, R.sup.1 stands for straight or branched chain alkyl group of 1 to 6 carbons, R.sup.2 stands for a hydrogen atom, or a methyl or ethyl group, R.sup.3 stands for a halogen atom, or a methyl or methoxyl group, R.sup.4 stands for a hydrogen or halogen atom, or a lower alkyl or lower alkoxy group, and n is an integer of 1 or 2 with the proviso that when n is 2, the groups R.sup.4 may be the same or different, and Y stands for an oxygen or sulfur atom, and also to processes for the preparation of these ethers or thioethers and a use of these ethers or thioethers.These compounds of the present invention have excellent insecticidal and acaricidal activities while the toxicity of these compounds are very low.

Abstract: Novel diphenyl ether hydrazine derivatives, particularly 2-nitro-5 (nucleus-substituted phenoxy) phenylhydrazine derivatives are provided. They are useful as a selective herbicide having a high herbicidal activity and residual efficacy.

Abstract: Novel diphenyl ether hydrazine derivatives, particularly 2-nitro-5 (nucleus-substituted phenoxy) phenylhydrazine derivatives are provided. They are useful as a selective herbicide having a high herbicidal acitivity and residual efficacy.

Abstract: A gap self-compensating valving mechanism for an internal combustion engine, provided with a hydraulic pressure retaining mechanism arranged in place between a rocker shaft and a rocker arm. The hydraulic pressure containing mechanism includes lifters, a check valve and a return spring.