Abstract: A centrifugal compressor has a diffuser operative to convert the kinetic energy of fluid discharged from an impeller into pressure and having a shroud, a main shroud, and stationary vanes disposed in the diffuser. The distance between the shroud and the main shroud is smaller at an inlet side of the diffuser than at an outlet side thereof. The stationary vanes are integral with the one of the shroud and the main shroud that is perpendicular to the axis of rotation of the impeller so that an end surface of each of the stationary vanes forms a free end.

Abstract: A plurality of substrate holding members and a substrate pressing member are disposed on a rotation stage at a peripheral portion. The substrate pressing member includes a magnet and is pivotally supported by the rotation stage. A ring-shaped permanent magnet is located below the rotation stage and forms a ring around the rotation axis of the rotation stage. When a substrate mounted on the rotation stage is rotated and processed, the ring-shaped permanent magnet is positioned in the vicinity of the magnet of the substrate pressing member. This creates a magnetic force between the magnets, causing the substrate pressing member to pivot so that the substrate pressing member contacts the edge of the substrate with a predetermined amount of pressure.

Abstract: A reticle mask comprising: an exposure pattern for forming a unit for integrated circuits; and a window serving as a blank pattern, said window serving as a blank pattern existing in a region except the exposure pattern; and a method for exposing a pattern for integrated circuits which comprises the steps of: shielding said reticle mask at the exposure pattern for forming the units for integrated circuits; positioning and exposing the blank pattern over an incomplete pattern existing at the periphery of the photoresist film; and removing the exposed incomplete pattern by development.

Abstract: An electromagnetic fuel injection valve comprises a valve body, a valve seat which cooperates with the valve body, a fuel injection port disposed downstream of the valve seat, and a dividing device which serves to divide injection fuel injected from the fuel injection port. The dividing device is formed integrally with a member in which the fuel injection port is formed and includes parallel walls substantially parallel to each other with the fuel injection port interposed therebetween and arcuate walls connected to the parallel walls having a diameter larger than that of the fuel injection port. The walls extend from said member in a direction of an axis of the valve. The dividing device has an outer diameter substantially equal to the largest diameter of the valve seat.

Abstract: A centrifugal compressor has a diffuser with stator blades arranged therein for converting the kinetic energy of a fluid discharged from an impeller into a pressure energy. The stator blades have leading edges inclined in the downstream direction while extending away from a side plate toward a core plate. Auxiliary blades having a chord length shorter than that of each of the stator blades have leading edges inclined in the downstream direction while extending away from the side plate toward the core plate and are arranged at positions radially inward of the stator plates in such a manner that one of the surfaces of each of the auxiliary blades faces a stator blade. The compressor is capable of operating without suffering from surging and rotating stall even in a low flow rate region.

Abstract: Finely particulate Zeolites of the ZSM-5 5 family, exhibiting characteristic peaks in an X-ray powder diffraction pattern, are stably produced by a novel method in which a nucleating slurry containing semi-crystalline zeolite having a BET surface area of 100 to less than 250 m.sup.2 /g is mixed with a raw material mixture of silica, alumina and alkali metal sources to obtain a preliminary slurry, followed by heating to obtain a first precursory slurry mixture containing a precursory zeolite having a BET surface area of 100 to 200 m.sup.2 /g, and subsequently the first precursory slurry mixture is mixed with a raw material mixture as mentioned above to obtain a second precursory slurry, followed by heating to obtain a product slurry containing a finely particulate zeolite having a BET surface area of at least 250 m.sup.2 /g. In the method, the first precursory slurry mixture can be advantageously recycled and used as a nucleating slurry.

Abstract: A centrifugal compressor has diffusers which convert a high velocity, low pressure stream of fluid which flows out of an impeller to a high-velocity high-pressure flow due to the action of a purality of stator blades disposed near the outer periphery of the impeller. In this compressor, the portion of the stator blade or of an auxiliary blade which is provided in the diffuser located on the side of a front shroud is disposed closer to the impeller than the portion thereof located on the side of a main shroud, and the leading edge of the stator blade is thus inclined from the portion thereof located on the side of the main shroud to the portion thereof located on the side of the front shroud. The configuration of the front edge of a stator blade or of an auxiliary blade which is provided in the diffuser is so improved as to restrict back flow which occurs on the side of the front shroud when the flow rate is small and to lower the minimum flow rate.

Abstract: A centrifugal compressor including a vaned diffuser provided with a plurality of stationary vanes disposed around an impeller for converting into kinetic energy of a discharged fluid into pressure. The diffuser further includes rotatable vanes unevenly distributed in the stationary vanes.

Abstract: In a diffuser for a centrifugal compressor of the type which includes an impeller rotatably provide on a downstream side of the suction casing and a plurality of radial stator blades arranged tangentially with respect to the impeller, auxiliary blades are provided between the impeller and the stator blades, with the auxiliary blades having a chord length shorter than that of the stator blades and being slidable in the axial direction of the impeller. Further, the auxiliary blades are connected to devices designed to move them in the axial direction.

Abstract: A diffuser centrifugal compressor of a comprising a plurality of stator blades provided outside an impeller thereof, and which converts kinetic energy of fluid from the impeller into pressure energy by operation of the stator blade. The diffuser is provided with sub-blades near the inner ends of the stator blades, and intermediate blades near outer ends of and between the stator blades.

Abstract: A plant growth promoter comprising as an active ingredient for plant growth promotion at least one phenylglycine selected from the group consisting of(1) monomeric phenylglycines,(2) N-phenylglycylphenylglycines, and(3) cyclic dimers of phenylglycines.

Abstract: A novel phenoxycarboxylic acid of formula (I) is disclosed. The compound is effective as herbicide for eradicating broad-leaved weeds. A combination of the phenoxycarboxylic acid and a N-phosphonomethylglycine or a glufosinate which is known as a herbicide is very effective for eradicating both broad-leaved weeds and narrow-leaved weeds.

Abstract: An organo-phosphorus compound represented by the following formula (I) ##STR1## wherein X and Y are identical or different and each represents a hydrogen atom, a halogen atom, CF.sub.3 or an alkyl group having not more than 5 carbon atoms; Z represents CH or N; R.sup.1, R.sup.2 l and R.sup.3 l are identical or different and each represents a hydrogen atom or a lower alkyl group having 1 to 5 carbon atoms; and n is zero or 1. The compound is useful, as a herbicide, for eradicating weeds, especially narrow-leaved weeds.

Abstract: A phenoxyacetic acid represented by the following formula (I) ##STR1## wherein X represents a halogen atom or CF.sub.3, R.sup.1 and R.sup.3 are identical or different and each represents a hydrogen atom or an alkyl group having not more than 5 carbon atoms, R.sup.2 represents a hydrogen atom, a lower alkyl group, a phenyl group, a benzyl group, --CH.sub.2 CH.sub.2 SCH.sub.3, --CH.sub.2 OH, --CH(CH.sub.3)OH, --CH.sub.2 SH, --CH.sub.2 COOCH.sub.3, ##STR2## or R.sup.2 and R.sup.3 together may form --CH.sub.2 CH.sub.2 CH.sub.2 -- or --CH.sub.2 CH.sub.2 CH(OH)--, and n is 0, 1 or 2, or a salt at the carboxyl group of the phenoxyacetic acid of the above formula in which R.sup.1 is a hydrogen atom. The compound is useful, as a herbicide, for eradicating weeds, especially narrow-leaved weeds.

Abstract: A method for producing adiponitrile through the electrohydrodimerization of acrylonitrile by electrolyzing an emulsion comprised of an aqueous phase and an organic phase in at least one undivided cell having a cathode of lead or a lead alloy, in which an ethyltributylammonium salt as a quaternary ammonium salt is included in the aqueous phase in a concentration of from 0.02 to 0.08 mol/liter. The method of the present invention is remarkably improved with respect to the prevention of the corrosion of the cathode.

Abstract: A plant growth promoter comprising as an active ingredient for plant growth promotion at least one phenylglycine selected from the group consisting of(1) monomeric phenylglycines,(2) N-phenylglycylphenylglycines, and(3) cyclic dimers of phenylglycines.

Abstract: A phenoxyalkanoylaminomethylphosphonic acid represented by the following formula (I) ##STR1## wherein X and Y are identical or different and each represents a hydrogen atom, a halogen atom, CF.sub.3 or an alkyl group having not more than 5 carbon atoms, Z represents CH or N, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each represents a hydrogen atom or a lower alkyl group having 1 to 5 carbon atoms. The compound is useful, as a herbicide, for eradicating weeds, especially narrow-leaved weeds.

Abstract: A benzoylaminoalkylphosphonic acid represented by the following formula (I) ##STR1## wherein X and Y are identical or different, and each represents a hydrogen atom, a halogen atom, CF.sub.3, or an alkyl group having not more than 5 carbon atoms, Z is CH or N, and R.sup.1, R.sup.2 and R.sup.3 are identical or different and each represents a hydrogen atom or a lower alkyl group having 1 to 5 carbon atoms. The compound is useful, as a herbicide, for eradicating weeds, especially broad-leaved weeds.

Abstract: This invention relates to a rotary head assembly in which a magnetic tape runs while being would helically, consisting of a fixed cylinder 21 having a fixed cylindrical part, and a rotatable rotary member 19 having a diameter approximately equal to that of said fixed cylinder 21, being disposed coaxially with a very small gap and holding a magnetic head 29, wherein pump-out type spiral grooves 20 are provided either partly or wholly on either plane of the confronting planes formed in the relative rotating part between said fixed cylinder 21 and said rotary member 19 in order to create a buoyancy on a running magnetic tape by air pressure not only in the rotary cylinder area but also in the fixed cylinder area, to realize a stable and smooth tape running, and to radically eliminate the tape chirping phenomenon, sticking phenomenon, and tape damage and cylinder wear accompanying sliding.

Abstract: A concrete composition for making concrete moldings of high strength is provided which comprises 400-600 kg. of Portland cement per unit m.sup.3 of concrete, 3-30% by weight of insoluble (Type II) anhydrous calcium sulfate and 0.1-3% by weight of cement dispersing agent. A method for making concrete moldings of high strength having the above components are also provided which comprises subjecting to pre-steaming and then steam curing under atmospheric pressure. According to the present invention, concrete moldings having both high compressive strength and pre-stress with reduced relaxation can be obtained only in a day without subjecting to autoclave curing.