Abstract: Methods for diagnosis of cancers of digestive organs selected from stomach, colon and pancreatic cancers using antibodies specific for a mucin-type carbohydrate chain of the formula Gal.beta.1--4GlcNAc.beta.1--6GalNAc.alpha.1--1Cer are described.

Abstract: Thiadiazole derivatives with excellent herbicidal effectiveness, wide herbicidal spectrum and excellent selectivity are disclosed. The thiadiazole derivatives are represented by one of the formula [I]14 [IV].

Abstract: A process for producing a copolymer having succinimide units represented by general formula (I) is provided which comprises reaction of a copolymer constituted of 40-60 mole % of maleic anhydride units, 60-40 mole % of olefin units, and 0-20 mole % of another copolymerizable monomer units with an amine to convert the maleic anhydride units to the succinimide units, wherein the succinimide units are formed by ring-closing imidation in a slurry state in a poor solvent: ##STR1## where R.sub.1 is a hydrogen atom, or an alkyl or cycloalkyl group of 1 to 6 carbons. The copolymer has low yellowness and high transparency.

Abstract: Resin compositions having excellent heat resistance, izod impact strength, rigidity and dimensional resistance and the like, applied in the fields of the automobile, electric and electronic, and the like industries. The resin composition comprising: a) a resin in which 30 to 98 mole % of the component (I) are contained in the whole polymer and 70 to 2 mole % of the component (II) are contained in the whole polymer, its weight-average molecular weight converted into that of polystyrene being 1.times.10.sup.3 or more to 5.times.10.sup.6 or less, and b) an olefin resin; then the a)/b) content being 5/95 to 99/1 as a weight ratio, ##STR1## wherein R.sub.1 is an alkyl group having 1 to 18 carbon atom(s) or a cycloalkyl group having 3 to 12 carbon atoms; and ##STR2## wherein R.sub.2 is hydrogen or an alkyl group having 1 to 8 carbon atom(s), and R.sub.3 and R.sub.4 is an alkyl group having 1 to 8 carbon atoms.

Abstract: An optical material, comprising a resin composed of a polymer constituted of a first structural unit composed of at least one of the compounds represented by the formula (I), and of a second structural unit composed of at least one of the compounds represented by the formula (II), and having a weight-average molecular weight of from 1.times.10.sup.3 to 5.times.10.sup.6 : ##STR1## where R.sub.1 denotes an alkyl group having 1 to 18 carbons or a cycloalkyl group having 3 to 8 carbons; ##STR2## where R.sub.2 denotes hydrogen or an alkyl group having 1 to 8 carbons, and R.sub.3 and R.sub.4 denote respectively an alkyl group having 1 to 8 carbons. The optical material is superior in transparency, heat resistance, surface hardness, mechanical strength, and other properties.

Abstract: A high critical temperature and high critical current density superconductor is disclosed which contains a metal oxide expressed by the following formula (I):(R.sup.1.sub.1-x,Ba.sub.x)Ba.sub.2 Cu.sub.3 O.sub.d (I)wherein R.sup.1 stands for at least one element selected from the group consisting of La, Nd, Sm, Eu and Gd, x is a number greater than 0 but not greater than 0.5 and d is a number between 6.2 and 7.2. Fine phases of RE211, RE422 and/or a metal oxide expressed by the formula (R.sup.2.sub.1-z, Ba.sub.z) (Ba.sub.1-y, R.sup.2.sub.y).sub.2 Cu.sub.3 O.sub.p (R.sup.2 =La, Nd, Sm, Eu or Gd) may be dispersed in a matrix of the matrix phase of the formula (I). The above superconductor may be obtained by cooling a melt having a temperature of 1,000.degree.-1,300.degree. C. and containing R.sup.1, Ba, Cu and O at a cooling rate of 5.degree. C./hour or less under a partial pressure of oxygen of between 0.00001 and 0.05 atm, followed by annealing at 250.degree.-600.degree. C. in an oxygen atmosphere.

Abstract: A backlighting device for use with display panels has a plurality of light diffusing elements formed in dots or stripes on one of the two major faces of a light conducting plate that is made of a light-transmissive material. The device also has a linear light source provided in proximity to the end portion of at least one side of the light conducting plate. In the device, at least one sheet that is made of a light-transmissive material and which has a multiple of prisms or raised structures having straight ridgelines defined by the apices and minima of the raised structures at small intervals on the same side of the sheet.

Abstract: A magnetoresistance effect element having a substrate, a buffer layer of a metal selected from the group consisting of chromium, tungsten, titanium, vanadium, manganese and their alloys which is formed on the substrate, and at least two magnetic thin layers which are laminated with interposing a non-magnetic thin layer therebetween on the metal thin layer, wherein adjacent magnetic thin layers through the non-magnetic thin layer have different coercive forces. This magnetoresistance effect element has an increased magnetoresistance ratio.

Abstract: A catalyst, for purifying an exhaust gas, is a zeolite catalyst for removing nitrogen oxides, carbon monoxide and hydrocarbons from an oxygen-rich exhaust gas containing the nitrogen oxides, carbon monoxide and hydrocarbons, wherein the zeolite has an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of 10 or more and contains nickel, or wherein the zeolite has an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of 15 or more, and contains nickel and a rare earth metal or an alkaline earth metal.

Abstract: A copolymer rubber which consists essentially of (A) from 70 to 99 wt % of a cyano group-containing acrylate of the formula (I): ##STR1## wherein R.sup.1 is a C.sub.2-6 alkylene group or --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 --,(B) from 1 to 30 wt % of an .alpha.,.beta.-unsaturated nitrile,(C) from 0 to 10 wt % of at least one monomer selected from the following monomers:a) an active halogen group-containing monomerb) an epoxy group-containing monomerc) a carboxyl group-containing monomerd) a diene compounde) a (meth)acrylate having an ethylenically unsaturated bond in its side chain, and(D) from 0 to 15 wt % of other ethylenically unsaturated monomer which is copolymerizable with each of the above components (A), (B) and (C), andwhich has a Mooney viscosity (ML.sub.1+4 (100.degree. C.)) of at least 5.

Abstract: Resin compositions having excellent heat resistance, izod impact strength, rigidity and dimensional resistance and the like, applied in the fields of the automobile, electric and electronic, and the like industries. The resin composition comprising: a) a resin in which 30 to 98 mole % of the component (I) are contained in the whole polymer and 70 to 2 mole % of the component (II) are contained in the whole polymer, its weight-average molecular weight converted into that of polystyrene being 1.times.10.sup.3 or more to 5.times.10.sup.6 or less, and b) an olefin resin; then the a)/b) content being 5/95 to 99/1 as a weight ratio, ##STR1## wherein R.sub.1 is an alkyl group having 1 to 18 carbon atom(s) or a cycloalkyl group having 3 to 12 carbon atoms; and ##STR2## wherein R.sub.2 is hydrogen or an alkyl group having 1 to 8 carbon atom(s), and R.sub.3 and R.sub.4 is an alkyl group having 1 to 8 carbon atoms.

Abstract: A pipette device capable of solving such problems as that a nozzle tip cannot be attached thereto because the device is too small in size or that an accurate drawing-in and ejection of liquids cannot be performed because a sufficient seal cannot be achieved between a shaft body lower end portion and a nozzle tip. The pipette device includes: a hollow shaft body having a lower end portion capable of being fitted into an upper end opening of a nozzle tip having the shape of an inverted cone and connected at the interior thereof to an air supply/ejection device for the drawing-in and ejection of liquids; a slide block for holding the shaft body in a manner movable up and down and rotatable about the axis thereof; a support for holding the slide block movable in an up and down direction; and a driver unit for moving the slide block up and down with respect to the support. A helical groove is formed on a part of the periphery of the upper end portion of the shaft body.

Abstract: A lactone is prepared by catalytically hydrogenating a dicarboxylic acid having 3 to 10 carbon atoms or a functional derivative thereof in the presence of a catalyst comprising a metal selected from the elements of group VIII of the periodic table or a combination of said metal with an element selected from the elements of groups IVa, VIb and VIIb of the peridic table, and further in the co-presence of an alkali metal salt or an alkali metal hydroxide.

Abstract: Thiadiazole derivatives with excellent herbicidal effectiveness, wide herbicidal spectrum and excellent selectivity are disclosed. The thiadiazole derivatives are represented by one of the formula [I]-[IV].

Abstract: Thiadiazole derivatives with excellent herbicidal effectiveness, wide herbicidal spectrum and excellent selectivity are disclosed. The thiadiazole derivatives are represented by one of the formula [I]-[IV].

Abstract: A method for producing a stereospecific polyolefin in the presence of a catalyst comprising a transition metal compound and an organometallic compound, wherein a catalyst system is used which comprises (A) a solid catalyst component prepared by reacting a homogeneous solution containing (i) at least one member selected from the group consisting of metal magnesium and a hydroxylated organic compound, and oxygen-containing organic compounds of magnesium, (ii) an oxygen-containing organic compound of aluminum and (iii) an oxygen-containing organic compound of titanium, with (iv) at least one aluminum halide compound to obtain a solid product, and further reacting to this solid product, (v) an electron-donative compound and (vi) a titanium halide compound, (B) at least one member selected from the group consisting of organometallic compounds of Groups IA, IIA, IIB, IIIB and IVB of the Periodic Table, and (C) an oxygen-containing organic compound of silicon which has no aromatic substituent and which has at least

Abstract: Thiadiazole derivatives with excellent herbicidal effectiveness, wide herbicidal spectrum and excellent selectivity are disclosed. The thiadiazole derivatives are represented by one of the formula [I]-[IV].

Abstract: This invention relates to a process for the polymerization of polyolefins, in which .alpha.-olefins are polymerized in the presence of a catalyst system composed of: the solid catalyst component (A) obtained by reacting a magnesium compound with oxygen-containing organic compounds of a transition metal, aluminum and silicon, followed by further reacting with a halogenated organoaluminum compound, and the catalyst component (B) comprising of organoaluminum compound and/or organoaluminoxane compound. The catalyst system of this invention provides polymers having an excellent particle form and the molecular weight distribution being easily controlled in a wide range, in high activity, and copolymers having a narrow composition distribution range.

Abstract: A protective coating material comprising (meth)acrylate derivatives of the following formulas 1, 2, 3, 4 and 5 within the following ranges of a, b, c, d and e % by weight, respectively:5.ltoreq.a.ltoreq.80, 0.ltoreq.b.ltoreq.30, 0.ltoreq.c.ltoreq.30, 5.ltoreq.d.ltoreq.50,0.ltoreq.e.ltoreq.50, provided that a+b+c+d+e=100, ##STR1## wherein each of R.sub.1 to R.sub.3 is H or CH.sub.3, and R.sub.4 is CH.sub.2 CH.sub.3 or CH.sub.2 OH, ##STR2## wherein each of R.sub.5 to R.sub.8 is H or CH.sub.3, ##STR3## wherein each of R.sub.9 to R.sub.14 is H or CH.sub.3,CH.sub.2 .dbd.C(R.sub.15)COO(CH.sub.2).sub.n OCOC(R.sub.16).dbd.CH.sub.2 4wherein each of R.sub.15 and R.sub.16 is H or CH.sub.3, and n is an integer of from 2 to 10. ##STR4## wherein R17 is H or CH.sub.3.

Abstract: Disclosed is (a) 1,2,5-thiadiazole derivatives represented by the following formulae [I] or [III]: ##STR1## wherein X and Y are the same or different and each represents a hydrogen atom, a halogen atom, an alkyl group having from 1 to 6 carbon atoms, an alkoxy group having from 1 to 4 carbon atoms, a nitro group, a trifluoromethyl group, a carboxyl group, an alkoxycarbonyl group having from 2 to 5 carbon atoms, a naphthyl group or a tetrahydronaphthyl group; and A represents an alkyl group having from 1 to 6 carbon atoms, --C(.dbd.O)OR.sup.1, --C(.dbd.O)NR.sup.2 R.sup.3, a phenyl group which may be substituted by at least one of an alkyl group having from 1 to 6 carbon atoms and an alkoxy group having from 1 to 4 carbon atoms, --CHR.sup.4 C(.dbd.O)R.sup.5 or --C(.dbd.O)R.sup.6, in which R.sup.1 represents an alkyl group having from 1 to 6 carbon atoms, R.sup.2 and R.sup.3 are the same or different and each represents a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms, R.sup.