Abstract: To provide particles for water disinfection which are hard to be suspended and are hard to be diffused in water which is suitable for use of disinfecting water and which are capable of developing disinfection effect fully and method of producing the same. Particles for water disinfection in which silver is coated on a garnet surface or a particle surface whose main ingredient is garnet are used. When said particles are used, preferable embodiment of silver is that the granular lumps of silver are carried continuously and discontinuously forming a group on a garnet surface as shown in SEM photographs of FIG. 4. Effective production method of such particles can be conducted by the electroless plating method in which garnet particles are immersed in a mixed solution composed of reducing solution in which at least any one of potassium sodium tartarate, glucose, or acetardehyde as a reducing agent is dissolved in water, silver nitrate solution, and ammonium solution.

Abstract: A content server 10, in transmitting content appended with redistribution restriction information to a communication terminal 50, determines whether communication terminal 50 has a redistribution restriction function on the basis of identification data contained in a user agent header contained in a HTTP message transmitted from communication terminal 50. When the determination is affirmative, content server 10 transmits to communication terminal 50 the content via the Internet 20, gateway server 30, and mobile packet communication network 40.

Abstract: It is possible to use a content in various ways while protecting rights assigned to the content including copyright. Output permission level judgment means (22) judges an output permission level (L1 to Ln) described in content files (F1 to Fn). According to the output permission level (L1 to Ln), output control means (23) permits the content files (F1 to Fn) to be stored in internal storage means (24) and an external memory (27) or image-output to a main body monitor (25) and an external monitor (26) or transferred via a communication network (11).

Abstract: In a direct injection type automatic sampler, a sampling needle having a liquid sample collected from a sample vessel by using suction force of a pump is inserted into an injection port. Then, a flow path-switching valve is rotated to switch a flow path to make a flow of mobile phase liquid pass through a loop to thereby introduce the collected sample into a column. The injection port is directly incorporated in the flow path-switching valve.

Abstract: A method for detection of human parvovirus B19, comprising the steps of: (1) bringing a sample into contact with fixed P-antigen positive red cells in a medium at pH 5.6±0.6; and (2) determining whether or not hemagglutination occurs; and a reagent for detecting human parvovirus B19, wherein the reagent comprises fixed P-antigen positive red cells.

Abstract: Water-atomized iron powder for powder metallurgy having a hardness of particle cross section of from about Hv 80 or higher to about 250 or lower, the iron powder having been atomized with water and dried, and having a particle surface covered with oxides which are reducible in a sintering atmosphere, and which has an oxygen content of 1.0 wt % or less.The water-atomized ion powder can be made by an improved and simplified processing, and the cost of resulting sintered products is decreased as a result of its use.

Abstract: This invention is to control the diffusion of C (carbon) from added graphite to particles of iron powder in the sintering to thereby improve the accuracy of dimensional change in the sintered body by using iron powder for powder metallurgy and a mixed powder thereof as a starting material in the production of sintered mechanical parts by adding the iron powder with Cu powder and graphite powder and companying and sintering them, in which 0.008-0.5 wt % in total of at least one element having a value of standard free energy of formation of oxide at 1000.degree. C. of not more than -120 kcal/l mol of O.sub.2 is included in the iron powder and not less than 20% of the element is rendered into an oxide, or 0.01-0.20 wt % in total of an oxide powder of at least one element having a value of standard free energy of formation of oxide at 1000.degree. C. of not more than -120 kcal/l mol of O.sub.2 is added to the mixed powder.

Abstract: An iron-based powder mixture for powder metallurgy essentially consists of a melted mixture, as a binder, which includes about 0.1% to about 1.0% by weight of a powder of at least one organic compound selected from stearic acid, oleic acid amide, and stearic acid amide, and about 0.1% to about 1.0% by weight of a powder of stearic acid bisamide; and the balance which is an iron-based powder, to the surface of which adhered about 0.1% to about 3.0% by weight of an alloying powder and/or a powder for improving machinability. Disclosed also is a method of producing the mixture.

Abstract: Water-atomized iron powder for powder metallurgy having a hardness of particle cross section of from about Hv 80 or higher to about 250 or lower, the iron powder having been atomized with water and dried, and having a particle surface covered with oxides which are reducible in a sintering atmosphere, and which has an oxygen content of 1.0 wt. % or less.The water-atomized ion powder can be made by an improved and simplified processing, and the cost of resulting sintered products is decreased as a result of its use.

Abstract: This invention is to control the diffusion of C (carbon) from added graphite to particles of iron powder in the sintering to thereby improve the accuracy of dimensional change in the sintered body by using iron powder for powder metallurgy and a mixed powder thereof as a starting material in the production of sintered mechanical parts by adding the iron powder with Cu powder and graphite powder and companying and sintering them, in which 0.008-0.5 wt % in total of at least one element having a value of standard free energy of formation of oxide at 1000.degree. C. of not more than -120 kcal/1 mol of O.sub.2 is included in the iron powder and not less than 20% of the element is rendered into an oxide, or 0.01-0.20 wt % in total of an oxide powder of at least one element having a value of standard free energy of formation of oxide at 1000.degree. C. of not more than -120 kcal/1 mol of O.sub.2 is added to the mixed powder.

Abstract: An iron-based powder mixture for powder metallurgy essentially consists of a melted mixture, as a binder, which includes about 0.1% to about 1.0% by weight of a powder of at least one organic compound selected from stearic acid, oleic acid amide, and stearic acid amide, and about 0.1% to about 1.0% by weight of a powder of stearic acid bisamide; and the balance which is an iron-based powder, to the surface of which adhered about 0.1% to about 3.0% by weight of an alloying powder and/or a powder for improving machinability. Disclosed also is a method of producing the mixture.

Abstract: A peptide of the general formula:H-X-A-Ywherein A is a peptide fragment comprising 6 to 50 amino acids, X is a peptide fragment comprising 1 to 10 Lys, and Y is hydroxy or amino group, said peptide being capable of specifically binding to an antibody having a specificity against an adult T cell leukemia associated antigen, a reagent for measuring an antibody having a specificity against an adult T cell leukemia associated antigen which comprises the peptide, and an adsorbent for an antibody having a specificity against an adult T cell leukemia associated antigen which comprises the peptide immobilized on a carrier.

Abstract: A thermoplastic polyurethane resin is prepared by the reaction of(A) p-phenylene diisocyanate,(B) a hydroxyl terminated poly(hexamethylene carbonate) polyol having a molecular weight of 850 to 5000 and(C) a short chain polyol having 2 to 10 carbon atoms as the chain extending agent,the molar ratio of (B) : (C) being 1:2 to 1:0.05, and the molar ratio of isocyanate groups : total active hydrogen groups being 0.93:1 to 1.20:1.

Abstract: A thermosetting urethane elastomer is prepared from:(a) a prepolymer having isocyanate groups at terminal ends obtained by allowing p-phenylene diisocyanate to react with a compound having 2 or more active hydrogens, and(b) curing agents of 1,4-bis(2-hydroxyethoxy)benzene and trimethylolpropane or 1,4-bis(2-hydroxyethoxy)benzene and a polyol having isocyanurate ring.

Abstract: It is disclosed a method for preparing a large-sized powder metallurgical sintered product having a superior characteristic by charging mixtures of three types of metallic powder composed of coarse particles, middle particles and fine particles into the molding die while vibrating it, heating the charged material together with the molding die, sintering them, and infiltrating metal of low melting point into the sintered body. According to this method, it is possible to get a large-sized sintered body having a superior strength and surface smoothness or a sintered body prohibiting any cracks or slits by arranging the proper particle size.