Abstract: An electrostatical powder coating method and apparatus therefor, in which an auxiliary electrode is disposed in the vicinity of a desired coating surface of an object to be coated, a gun for performing electrostatically powder coating is directed to the object to be coated and the auxiliary electrode, a DC electric field is formed between the gun, the auxiliary electrode and the object to be coated, the auxiliary electrode is electrically charged to the same polarity as the gun so as to form an auxiliary electric field between the auxiliary electrode and the desired coating surface of the object to be coated whereby a powder coating material is transferred to be applied onto the desired coating surface by the electric field.

Abstract: A dielectric ceramic composition for multilayer ceramic capacitors is provided which consisting essentially of 94.70-99.39 mole % of barium titanate, 0.50-3.00 mole % of niobium pentoxide, 0.10-2.00 mole % of zinc oxide, and 0.01-0.30 mole % in terms of manganese dioxide.

Abstract: A gun head constituting the front section of an electrostatic powder painting gun makes the pattern of powder flow spouted out therefrom into the form of a flat fan-like shape to decrease the velocity of the powder flow traveling toward a workpiece to be painted to thereby enhance the efficiency of adhesion of the powder paint to the workpiece. A spout section of an end wall of a cylindrical body constituting a fundamental section of the gun head has a pair of opposed slits bored therein such that the spacing between these slits decreases progressively as approaching the outer ends thereof, and the inner ends of these slits communicate with a powder path formed inside the cylindrical body at opposed spots close to the inner surface of the powder path.

Abstract: A manufacturing method for an aluminum nitride sintered body comprises admixing an additive selected from calcium cyanamide, calcium cyanide, and mixtures thereof with aluminum nitride powder, forming the mixture into a formed body, and sintering the formed body in a non-oxidizing atmosphere. The resulting aluminum nitride sintered body has a high thermal conductivity.

Abstract: An apparatus for measuring particle-size distribution which is constructed by arranging a measuring cell or cells in vertical direction, i.e. their longitudinal directions in alignment with the direction of the gravity, or mounting a measuring cell or cells on a rotor rotatable in a horizontal plane so that their longitudinal directions are in alignment with the radial directions as that of centrifugal force; inserting tips of a couple of pressure transmitting tubes having lengths different between them into each of said measuring cells; and securing base ends of said pressure transmitting tubes to a pressure-detecting unit.

Abstract: A thermal fixing roller for use in a copying machine and a method for manufacturing the thermal fixing roller are disclosed. An insulator layer is formed on an outer surface of a cylindrical metallic pipe, a masking wire material is wound in a spiral manner on the surface of the insulator layer and a heat-generating resistor is formed by spray coating heat-generating resistor material on the insulator and wire surfaces. Thereafter the wire material is removed to leave a groove at its trace, and thereby the above-mentioned heat-generating resistor can be formed in a spiral shape. By choosing pitches at the opposite end portions of this spiral resistor smaller than that at the central portion thereof, uniform temperature is maintained over the entire length of the thermal fixing roller. Also by forming a cross-section configuration of the masking wire material in a rectangular shape, it is allowed to reduce the width of the above-mentioned groove to minimum.

Abstract: A single torch-type plasma spray coating method wherein a gas flow in a nozzle of a plasma torch is made to be a laminer flow, thereby the plasma flame jetted from the end of the plasma torch is modified to be a laminer flow flame, the plasma is separated from the plasma flame which contains liquid droplets of molten spray coating material and runs toward an object to be worked by means for separating plasma arranged immediately before said object to be worked, and remaining droplets of molten spray coating material impinges on said object to form a coating film thereon, and an apparatus therefor.

Abstract: A multiple torch type plasma spray coating method and a multiple torch type plasma spray coating apparatus in which a main torch and an auxiliary torch are disposed so that their center axes may intersect each other, is improved in that laminar flow plasma is generated by the main torch, spray coating material is charged into the plasma flame in the proximity of the outlet of the main plasma torch, the plasma flame is blown onto an object to be treated, plasma is separated from the plasma flame just in front of the object to be treated, and the then left spray coating material is made to deposit onto the object to be treated.

Abstract: A controller for a clinker cooler for cooling high temperature clinker supplied from a rotary kiln by controlling the quantity of high temperature clinker cooling air at a constant value comprising maintaining the pressure at the rear side of a baffle plate mounted in the cooler constant by varying the opening of a damper of a cooler exhaust fan and the rotating speed of the cooler exhaust fan, and controlling the pressure of a kiln outlet hood by the quantity of clinker cooling air of the all air chambers of the cooler except for the first chamber on the kiln side of the baffle plate. Thus, the variations in the cooler exhaust amount and the secondary air flow rate occurring in the prior-art control means are reduced to stabilize the steps, to improve the quality of the clinker and to reduce the thermal quantity consumption per unit.

Abstract: A process for producing 5-fluorouracil using an aqueous phosphoric acid solution as a solvent which is a good solvent for an intermediate resulting from the reaction between uracil and elemental fluorine, and permits the reaction to proceed smoothly, but which can precipitate the final product, 5-fluorouracil, after cooling the heat-treated reaction solution to room temperature, with no need to evaporate the solvent.The process comprises reacting uracil in an aqueous phosphoric acid solution with elemental fluorine and heating the resultant reaction solution to form 5-fluorouracil.

Abstract: A flow rate measurement apparatus is comprised of a generally cylindrical tubular main body introduced transversely of the main duct through which flows a fluid whose flow rate is to be measured. A first conduit for measuring the total pressure and a second conduit for measuring the static pressure are introduced along the upstream and downstream sides of the interior of the tubular main body, respectively, while coolant water inlet and outlet pipes are also introduced into the mid portion of the interior of the main body for circulation and cooling. Dust and dirt entrained in the fluid and introduced into the first and second conduits descends by gravity so as to be collected in associated dust boxes for removal.

Abstract: A three phase fluidized bed water purifying process comprises purifying effluents in a three phase fluidized bed composed of solid particles, an effluent, and a gas in fluidized state, the solid particles being made by mixing a binder with an inorganic material based on aluminium silicate, granulating the resulting mixture, and firing the granules to sinter them. The present invention permits the purification of effluent for a long period of time without oxygen deficiency.

Abstract: A vertical mill for material such as cement raw materials, clinker, coal, or the like comprises a grinder portion which has rollers arranged to grind the material by their rolling on a rotary table, a separator means which is positioned above the grinder portion and which classifies the ground material conveyed pneumatically from the grinder portion to the separator means by the two opposite forces of centrifugal force of a rotary disk and of fluid resistance of a vortex flow, a plurality of straightening vanes which are mounted between the casing and the inner cone and which adequately regulate the direction of the fluid in the lower portion and in the upper portion in passage between the grinding portion and the separator means, and a casing outside the separator means having the appropriate shape for forming a horizontal vortex flow in the separator means. The aforesaid vertical mill structure improves the classifying efficiency of the separator means.

Abstract: In a high pressure discharge lamp device provided with an inductive stabilizer and a starting circuit consisting of a serial circuit of a resistor and a bimetal switch, a pulse waveform conversion circuit is arranged therein to reduce the pulse peak of the starting voltage and also broaden the pulse width of the starting voltage. The pulse waveform conversion circuit comprises a serial circuit of a resistor and a switching element, such as micro-gap element, which operates at a voltage lower than the starting voltage of the discharge lamp but higher than the secondary load-free voltage of the stabilizer.

Abstract: A dielectric ceramic composition having a composition represented by the formulaxBaO-yNd.sub.2 O.sub.3 -z(Ti.sub.1-m Zr.sub.m)O.sub.2wherein x+y+z=1.000<m.ltoreq.0.25and x, y, and z are in the molar ratio region surrounded by the points a, b, c, and d which are represented by the following x-y-z coordinates:______________________________________ x y z ______________________________________ a 0.15 0.12 0.73 b 0.15 0.18 0.67 c 0.05 0.18 0.77 d 0.05 0.12 0.

Abstract: A composition for ceramic dielectrics comprising BaO, CeO.sub.2, ZrO.sub.2, CaO and TiO.sub.2 in sintered state. The composition can also contain at least one of MnO.sub.2, Cr.sub.2 O.sub.3, FeO, NiO, and CoO as additive. As the composition is very fine in grain size, and has a prolonged life, it is very suitable for a raw material of such a product as a layer-built capacitor which is used in high electric field.

Abstract: A temperature compensating composition for ceramic dielectrics comprising La.sub.2 O.sub.3 --TiO.sub.2 --CaO--MgO based composite as a main component and ZrO.sub.2 as an additive respectively sintered. As the composition is very fine in grain size, it is a very suitable raw material for such a product as a layer-built capacitor which is used in a high electric field.

Abstract: This invention relates to a process for producing a concrete mixture containing an AE fly ash cement having substantially no fluctuation of entrained air contained therein regardless of the amount of unburnt carbon in the fly ash which comprises mixing an aggregate, water, and an AE fly concrete composition characterized in that polyoxyethylenesorbitan oleate having 16 to 41 molar ethylene oxide group for mole of said polyoxyethylenesorbitan oleate is used as said AE agent.

Abstract: There is disclosed a ceramic capacitor comprising a polycrystalline ceramic dielectric material disposed between electrodes of conductive material with the polycrystalline ceramic dielectric material having a thickness not more than 30 .mu.m and a particle size not more than one fifth of the thickness of the dielectric material.

Abstract: A filler for filling in defects or hollow portions of bones to coalesce with the bone tissues is provided which comprises powders of a calcium phosphate compound having the apatite crystalline structure of each crystal grain size of from 50 .orgate. to 10 microns and represented by the following general formula of Ca.sub.m (PO.sub.4).sub.n OH (1.33.ltoreq.m/n.ltoreq.1.95); and said powders being adapted for filling in a fluidized or plasticized state. A method of treating a bone with the filler is also provided wherein at least a portion of said filler is filled in to reach the bone-marrow cavity of said bone.