Abstract: A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon, at least the surface portion of said magnetic layer being made from an organic compound having a perfluoro group and a hydrocarbon group is excellent in durability and exhibits good lubricating effect for a long period of time.

Abstract: A magnetic recording medium which comprises a non-magnetic substrate, a thin film magnetic layer formed on the surface of the substrate and an organic thin film protective layer formed on the magnetic layer, the organic thin film protective layer having a thickness of not more than 100 nm and containing a filler having a particle size of not more than 50 nm, wherein the surface of the organic thin film protective layer is further coated with a fluorine-based compound represented by the following general formula:F(C.sub.3 F.sub.6 --I--).sub.x --C.sub.2 F.sub.4 --,F(C.sub.3 F.sub.6 --O--).sub.x --(CF.sub.2 O).sub.y --(CF.sub.2).sub.z --or--(C.sub.2 F.sub.4 --O--).sub.y --(CF.sub.2 --CF.sub.

Abstract: This invention relates to a magnetic recording medium wherein the improvement comprises a lubricative film comprising a lubricant having a functional group at one end of the molecule and a lubricant having a functional group at both ends of the molecule. According to the present invention, there are provided a magnetic recording medium having excellent sliding tolerance against the head, reduced adhesiveness and dense surface, and a magnetic storage device using such a recording medium.

Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is a hydrogen atom or a lower alkyl group, each of R.sup.3, R.sup.4 and R.sup.5 is a hydrogen atom or a lower alkyl group, or R.sup.3 and R.sup.4 together form a methylene group, an ethylene group or a propylene group, or R.sup.4 and R.sup.5 form together with the adjacent nitrogen atom an aziridinyl group, an azetidinyl group, a pyrrolidinyl group, a piperidino group, a piperazinyl group or a morpholino group; or a pharmaceutically acceptable salt or ester thereof.

Abstract: The present invention relates to a compound having the formula: ##STR1## wherein R is a hydrogen atom, a carboxyl-protecting group or a negative charge and Q is a hydrogen atom, a halogen atom, a hydroxyl group, an acetoxy group, a carbamoyl group, an azide group, a substituted or unsubstituted quarternary ammonio group or a substituted or unsubstituted heterocyclic thio group having at least one hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom, or a non-toxic salt or physiologically hydrolyzable non-toxic ester thereof; a process for producing it; and an antibacterial agent comprising it as an active ingredient.Further, the present invention also relates to a compound having the formula: ##STR2## wherein R.sup.3 is a hydrogen atom or an amino-protecting group, and each of R.sup.4 and R.sup.5 which may be the same or different is a hydrogen atom or a carboxyl-protecting group, or a salt thereof; and a process for producing it.

Abstract: In a magnetic recording medium in which a thin film of a magnetic material is disposed on a surface of a base of a non-magnetic material directly or through an undercoated film, powder of a material substantially the same as that of the non-magnetic base or an undercoated film is disposed directly beneath the magnetic thin film to form dispersed projections on the surface of the magnetic recording medium. Thus, the product has surface projections, and its magnetic thin film has a generally uniform thickness and uniform magnetic properties.

Abstract: A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon, at least the surface portion of said magnetic layer being made from an organic compound having a perfluoro group and a hydrocarbon containing group is excellent in durability and exhibits good lubricating effect for a long period of time.

Abstract: The present invention relates to stable crystalline (6R,7R)-7-(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxy-1-methylethoxylimino)ac etamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)methyl-3-cephem-4-carbox ylate sulfate or its hydrate, a process for production of the compound and (6R,7R)-7-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxy-1-methylethoxyimino) acetamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)methyl-3-cephem-4-carb oxylate hydrochloride or its hydrate which is a starting material useful for the production of the desired compound of the present invention.

Abstract: A compound having the formula: ##STR1## wherein R is a straight chain or branched chain lower alkyl, cyclic lower alkyl, lower alkenyl (except for 1-carboxy-1-vinyl), lower alkynyl, aralkyl, phenyl or 2-pyrrolidon-3-yl group which may be substituted, and Q is ##STR2## (wherein R.sup.1 is a hydrogen atom or an acetyl group, R.sup.2 is a hydrogen atom, a carboxyl group or a carboxymethyl group, Y is a sulfur atom or an oxygen atom, Z is a sulfur atom, an oxygen atom or an imino group which may be substituted by a lower alkyl group); or a pharmaceutically acceptable salt, physiologically hydrolyzable ester or solvate thereof.

Abstract: A substrate and semiconductor chips are connected by solder bumps and a vacant space around the solder bumps is coated with resin in such a degree that the tops of the semiconductor chips are not coated therewith. Epoxy resin or a resin having a smaller thermal expansion coefficient than the epoxy resin is used in the resin coating, and an inorganic material having a smaller thermal expansion coefficient than said resin is mixed therein.

Abstract: The present invention relates to stable cyrstalline (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxy-1-methylethoxyimino)ac etamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)-3-cephem-4-carboxylate sulfate or its hydrate, a process for production of the compound and (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxyl-1-methylethoxyimino)a cetamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)methyl-3-cephem-4-carbo xylate hydrochloride or its hydrate which is a starting material useful for the production of the desired compound of the present invention.

Abstract: A compound having the formula: ##STR1## wherein R.sup.1 is an amino group or a protected amino group, R.sup.2 is a hydrogen atom or a protecting group for a hydroxyl group, R.sup.3 represents negative charge, a hydrogen atom or a protecting group for a carboxyl group, and n is 0 or 1, and a salt thereof.

Abstract: A magnetic recording medium of high durability comprising a substrate material and a magnetic layer provided on at least one surface of the substrate material, the magnetic layer comprising magnetic powder and a resinous binder, characterized in that the magnetic layer comprises further at least one compound of the formula:Rf--CH.sub.2 --R).sub.m X (I)wherein Rf is a fluorinated polyoxyalkyl group having 8 to 152 carbon atoms, R is an oxyalkylene group having 2 or 3 carbon atoms, X is a polar group such as --OH, --OCH.sub.3, -O-lower alkylene-COOH or -O-CO-lower alkylene-OH and m is an integer of not less than 1 uniformly and entirely dispersed in the magnetic layer.

Abstract: A semiconductor resin package structure formed according to the flip-chip connection method and permitting to cool the rear surface of semiconductor chips, comprising semiconductor chip and carrier substrate which is soldered on one surface thereof to electrodes of the semiconductor chip according to the flip-chip connection method, the gap between the semiconductor chip and the carrier substrate being filled with resin having a thermal expansion coefficient, which is approximately equal to that of used solder, the electrodes of the semiconductor chip being electrically connected with terminals on the other surface of the carrier substrate through the soldered portions and a through-hole conductor disposed on the carrier substrate, the thermal expansion coefficient of the carrier substrate being approximately equal to that of a multi-layer substrate, with which the substrate is connected by soldering with the terminals.

Abstract: A lubricating composition comprising (A) at least one member selected from (a) a polyoxyalkylene alkyl ether phosphate diester, (b) a polyoxyalkylene alkylphenyl ether phosphate diester and (c) a phosphonate ester, in an amount of 3% by weight or more, (B) an N,N'-ethylenebis acid amide having an average particle size of 1 .mu.m or more in an amount of 2 to 15% by weight, and if necessary (C) a lubricating oil having a viscosity of 5 mm.sup.2 /s or more ('.degree. C.) is suitable for cold plastic working of aluminum alloys, particularly age-hardening type aluminum alloys, at the reduction of area of 35% or more.

Abstract: This invention provides a class of new indole derivatives which are useful as medicinal compounds having a mild inhibitory effect on the gastric acid secretion as well as a remarkably cytoprotective effects on gastric muscosa, and which are represented by the general formula: ##STR1##

Abstract: A compound having the formula: ##STR1## wherein R.sup.1 is a straight chain, branched chain or cyclic lower alkyl group which may be substituted by a carboxyl group, and each of R.sup.2 and R.sup.3 which may be the same or different, is a hydrogen atom, a hydroxyl group, a methoxy group or an acetoxy group, and R.sup.4 is a hydroxyl group, a methoxy group or an acetoxy group; or a pharmaceutically acceptable salt, physiologically hydrolyzable ester or solvate thereof.

Abstract: A substantially water-free, emulsion type liquid lubricant for metal forming which comprises:(a) a lubricating oil,(b) at least one of phosphoric acid esters represented by the general formula: ##STR1## wherein R is alkyl, alkylalkenyl or aryl; n is an integer of 1 to 2, and (c) an emulsifying agent,an average particle size of the phosphoric acid ester being 0.3 to 120 .mu.m, can form a lubricating film having distinguished heat resistance and lubricating properties by virtue of the heat generated by deformation and friction during the metal forming only by wetting the surface of a metallic workpiece or a die or both with the lubricant and work effectively for preventing galling, and thus parts with a high reduction of area or parts of complicated shapes can be readily formed.A lubricating film having a lubricating effect equivalent to that of the conventional phasphate film can be simply obtained, greatly contributing to reduction in product cost.

Abstract: A substantially water-free, liquid lubricant for metal forming, which comprises a lubricating oil, and at least one of linearly condensed phosphorus compounds represented by the following general formula (1):M.sub.m H.sub.n+2-m P.sub.n O.sub.3n+1 (1)wherein m is an integer of 0, 1, . . . , n+1, n is an integer of 2 to 6, and M is an alkali metal, and cyclically condensed phosphorus compounds represented by the following general formulae (2) and (3):(HPO.sub.3).sub.n (2)M.sub.x H.sub.y (PO.sub.3).sub.x+y (3)wherein n is an integer of 2 to 8, M is an alkali metal, and each of x and y is an integer of 1 or more, where x+y.ltoreq.

Abstract: A method for driving a liquid crystal element including a ferroelectric liquid crystal sandwiched between a pair of substrates having electrodes on their opposite surfaces is disclosed. A pulse voltage for defining the light transmitting state of the liquid crystal element is applied to the ferroelectric liquid crystal. Before and/or after the application of the pulse voltage, the ferroelectric liquid crystal is applied with a voltage signal which renders the average value of voltages applied to the ferroelectric liquid crystal equal to zero.