Abstract: An electrode for a living body comprises a main body consisting of a flexible sheet of graphite and the whole of the electrode is made substantially transparent in regard to X rays so that the electrode is not a hindrance to an X-ray inspection.

Abstract: Disclosed herein is herbicidal composition comprising a derivative of 1,2,4-triazole as an active ingredient, represented by the general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, a halogen atom or a C.sub.1 -C.sub.2) alkyl group; R.sup.2 represents a hydrogen atom, a halogen atom, a (C.sub.1 -C.sub.2) alkyl group fluoromethyl group (--CH.sub.2 F),3,3,3-trifluoropopyl group, methoxy group, cyano group, methoxymethyl group, methylthio group, methoxycarbonyl group or isopropoxycarbonyl group and R.sup.3 represents a thiocarbamoyl group or a group represented by the general formula (II): ##STR2## wherein R.sup.4 represents a hydrogen atom, a (C.sub.1 -C.sub.2) alkyl group or a hydroxy (C.sub.1 -C.sub.2) alkyl group and R.sup.5 represents a hydrogen atom, a C.sub.1 -C.sub.2) alkyl group, halogeno (C.sub.1 -C.sub.2) alkyl group, hydroxy (C.sub.1 -C.sub.

Abstract: Disclosed herein are a substantially odorless solvent for a chromogenic dye-precursor material for a pressure-sensitive recording paper sheet, which comprises from 0 to 20% by weight of m-isopropylbiphenyl, from 40 to 75% by weight of p-isopropylbiphenyl and from 5 to 40% by weight of diisopropyldiphenyl, and a pressure-sensitive recording paper sheet comprising a colour-development sheet coated with microcapsules containing a dye solution which is composed of the chromogenic dye-precursor material and the substantially odorless solvent, and a colour-developer sheet.

Abstract: Disclosed herein is a carbon product comprising at least two carbonaceous materials and one flexible graphite sheet interposed between said two carbonaceous materials, said two carbonaceous materials and said flexible graphite sheet having been joined together and integrated by calcination in an inert atmosphere as one carbon body, and the joining surface of at least one of said carbonaceous materials comprising both joining parts and non-joining parts which have an optional shape and are uniformly arranged on the joining surface, said carbon product as the electrode substrate of fuel cells, and a process for producing the same.

Abstract: Disclosed herein are a highly strong implant material having continuous passages in the two-dimensional direction, which is a ceramic material of hydroxyapatite and is useful as the substitutive material for bones in the fields of surgery and orthopedics or the filling material in the cavities of bones in the fields of dentistry and oral surgery, and a process for producing the implant material.

Abstract: Disclosed herein is a process for producing a highly pure produce of 2,6-naphthalenedicarboxylic acid in a large quantity at a moderate price by oxidizing 2,6-diisopropylnaphthalene while using a water-soluble salt of cobalt, a water-soluble salt of maganese or a mixture thereof, a water-soluble salt of cerium and a bromine compound as the catalyst of the oxidation.

Abstract: Disclosed herein are a process for producing a high-molecular-weight or ultra-high-molecular-weight granular PAS of an excellent handling property at an inexpensive cost without using a polymerization aid such as an organic acid salt, and a high-molecular-weight or ultra-high-molecular weight granular PAS of an excellent handling property produced by the process thereof.

Abstract: A polymer piezoelectric film comprising a poled film of a vinylidene fluoride copolymer having a high molecular weight as defined by an inherent viscosity within a specific range comprising 40 to 90 mol. % of vinylidene fluoride and 10 to 60 mol. % of trifluoroethylene. Such a high molecular weight vinylidene fluoride copolymer can give a preferable state of molecular arrangement during film formation, particularly preferably formation by casting, to provide a film excellent in piezoelectric characteristic and secondary processing characteristic.

Abstract: Disclosed herein is a method for examining cells, comprising subjecting the cells to an antigen-antibody reaction treatment, then measuring a pattern of the electrophoretic mobility of the cells and comparing the electrophoretic property of the cells under examination with the electrophoretic property of standard cells.

Abstract: Disclosed herein is a partially pressure-sensitive recording paper on which an ink has been applied partially, the ink having been prepared by uniformly dispersing microcapsules having a solution of a colorless electron-donating dyestuff as the core material, a thermally melting solid substance and an organic solvent having a mean boiling point of from 250.degree. to 350.degree. C. and a content of aromatic ring carbon of more than 25% while restraining the weight ratio of the solvent to the solid substance and the weight ratio of the solid substance to the microcapsules respectively in a prescribed range.

Abstract: A cement material containing polyarylene thioether fibers and carbon fibers as reinforcing fiber and molded articles comprising hardened products thereof are disclosed.The fiber reinforced cement material is curable in an autoclave and the molded articles comprising the hardened products thereof are excellent in deflection property, impact strength, tensile strength and bending strength.

Abstract: Disclosed herein is an electrode substrate provided with a manifold, for a fuel cell, comprising (1) the two porous and carbonaceous electrodes respectively provided with the flow channels of a reactant gas and joined to both surfaces of a separator via a flexible graphite sheet, (2) the separator which has been extended beyond the electrode and (3) the manifold which comprises a gas-impermeable and compact carbon plate and is provided with the flow passage for supplying the reactant gas and joined to the thus extended part of the separator via a flexible graphite sheet and the whole composite materials have been formed into one body as carbon, and a process for producing the electrode substrate.

Abstract: Disclosed herein are an integrated carbon article of a large size having a bulk density of more than 1.01 g/cm.sup.3, comprising pieces of carbonaceous material(s) of the same or different quality and flexible graphite sheet(s) produced by interposing the flexible graphite sheet(s) between each of the pieces of carbonaceous material(s), bonding each of the pieces of carbonaceous material(s) and the flexible graphite sheet(s) with an adhesive agent and calcining the thus bonded material at a temperature of not lower than 800.degree. C.

Abstract: Disclosed herein is a biaxially oriented paraphenylene sulfide block copolymer film showing a heat shrinkage of 0-2.0% at 100.degree.-220.degree. C., comprising a paraphenylene sulfide block copolymer essentially composed of recurring units (A): ##STR1## and recurring units (B): ##STR2## the molar fraction of recurring units (A) being 0.50-0.98, and having a melt viscosity (.eta.*) of 1,000-15,000 poises as measured at 310.degree. C. and shear rate of 200 sec.sup.-1, a glass transition temperature (Tg) of 20.degree.-80.degree. C., a crystalline melting point (Tm) of 250.degree.-285.degree. C. and a crystallization index (Ci) of 15-45 (measured with the non-stretched heat-treated polymer film), and a process for producing the biaxially oriented paraphenylene sulfide block copolymer film.

Abstract: A resin-made optical fiber is composed of a core of a polymer or copolymer obtained from a polymerizable monomer, which contains at least 1 wt. % of a crosslinkable monomer, and a cladding of a polymer of copolymer having a refractive index smaller than the core. The optical fiber is fabricated by filling a polymerizable monomer into a hollow fiber like cladding material, which is adapted to form a cladding and is made of a polymer or copolymer, and then placing the resultant composite material under polymerizing conditions to polymerize the polymerizable monomer. The latter step may preferably be carried out by causing the composite material to travel continuously in the direction of its length into a polymerization zone where conditions for the polymerization of the polymerizable monomer are satisfied, whereby the polymerizable monomer is successively polymerized to form a core having a refractive index greater than the cladding.

Abstract: Disclosed herein are a biaxially stretched polyparaphenylene sulfide film having protuberances on the surface of the film in number of not less than 10.sup.2 /mm.sup.2 of the surface thereof, an average diameter of the bottom part of the protuberances being from 5 to 40 .mu.m and an average height of the protuberances being from 0.3 to 2 .mu.m, and process for producing the same.

Abstract: Disclosed herein are a solvent for a chromogenic dye-precursor material for a pressure-sensitive recording paper sheet, comprising (1) 30 to 80% by weight of p-monoisopropylbiphenyl or a biphenyl mixture of not less than 80% by weight of p-monoisopropylbiphenyl, not more than 20% by weight of m-monoisopropylbiphenyl and not more than 10% by weight of diisopropylbiphenyl, and (2) 70 to 20% by weight of diisopropylnaphthalene or a naphthalene mixture of not less than 97% by weight of diisopropylnaphthalene, not more than 1% by weight of monoisopropylnaphthalene and not more than 2% by weight of triisopropylnaphthalene, and a pressure-sensitive recording paper sheet prepared by using the solvent.

Abstract: Disclosed herein is a process for producing a biaxially oriented paraphenylene sulfide block copolymer film, comprising melt extruding and molding a paraphenylene sulfide block copolymer essentially composed of recurring units (A): ##STR1## and recurring units (B): ##STR2## the molar fraction of recurring units (A) being 0.50-0.98, and having a melt viscosity (.eta.*) of 1,000-50,000 poises as measured at 310.degree. C. and shear rate of 200 sec.sup.-1, into a film, and after cooling, biaxially stretching the thus molded film at a stretching temperature (T) defined by the following formula:96-50X<T<116-66.7Xwherein T is a stretching temperature (.degree.C.

Abstract: Disclosed herein is a process for producing highly pure rhamnose from gum arabic, which the process comprises after partially hydrolyzing gum arabic in an aqueous solution of a mineral acid, neutralyzing and condensing the liquid hydrolyzate, thereby obtaining an aqueous solution containing from 40 to 70% by weight of organic substances, adding a polar organic solvent in an amount of from 5 to 20 times by volume of the amount of the aqueous solution, thereby precipitating an insolubilized substance, removing the insolubilized substance from a mixture of the aqueous solution and the polar organic solvent, removing the polar organic solvent from the mixture, thereby obtaining an aqueous solution containing monosaccharides formed by the hydrolysis of gum arabic, and subjecting the thus obtained aqueous solution to strongly cationic ion-exchanging resin-chromatography and then to a method of adsorption and separation by using activated carbon, thereby obtaining the highly pure rhamnose from the aqueous solution.

Abstract: A process for treating a polyarylene sulfide polymer slurry which has been provided by reactions of an alkali sulfide and a dichloroaromatic compound in N-methylpyrrolidone, the process comprising the following steps of (i) through (iv): (i) a step of separating a polymer slurry which contains polyarylene sulfide particles, alkali chloride as a by-product in the form of crystals and a solution and an arylene sulfide oligomer and has a liquid component which is principally N-methylpyrrolidone into polyarylene sulfide particles and a slurry containing the crystalline alkali chloride, the oligomer, and unreacted organic material by screening the slurry without diluting with water; (ii) a step of subjecting the slurry containing the crystalline alkali chloride to solid-liquid separation to obtain the crystalline alkali chloride; (iii) a step of washing the polyarylene sulfide particles with an organic solvent and water; and (iv) a step of recovering the organic solvent from a filtrate obtained by solid-liquid sep