Abstract: A tracking error signal and a focus error signal can be obtained with those components of the light (plus and minus first-order light) which have been diffracted by a hologram device whereas the undiffracted zero-order light component is for the sole purpose of producing RF signals. As a result, RF signals can be detected without using a segmented photodetector while insuring that output signals of a constant intensity are produced even if there are changes in the spot diameter and position. In addition, any aberrations that are caused by an half-mirror are corrected by optics that is provided in the optical path connecting the half-mirror and the light-receiving elements of a photodetector and this insures that even if an objective lens moves, detection spots on the individual light-receiving elements will move on the latter without causing any offset errors.

Abstract: In an optical pickup system, the light emitted from a source to illuminate an optical recording medium is reflected and directed via a beam splitter to a photodetector so as to read information signals, and a hologram device for splitting the emerging light from the source into a plurality of beams is provided as an integral part of the entrance surface of the beam splitter.

Abstract: An optical recording material comprising: a thin film or membrane of a hydrophobic binding agent; and metallic particles having a diameter of 0.003 .mu.m to 3 .mu.m dispersed in said film or membrane wherein the density of said metallic particles is higher near at least one surface of said film or membrane as compared with another portion of said film or membrane, each metallic particle having a nucleus and an outer coating, said outer coating consisting of at least one metal having a melting point of 250.degree. C. to 1800.degree. C. and a thermal conductivity at 0.degree. C. of 5 W.multidot.m.sup.-1 .multidot.K.sup.-1 to 450 W.multidot.m.sup.-1 .multidot.K.sup.-1 wherein the reflectivity of the surface of said film or membrane where the density of said metallic particle is higher is 10 to 90%., a method for preparing the optical recording material and an optical card containing the optical recording material.

Abstract: Novel peptide derivatives having RGD as a basic structure were found which have a platelet aggregation-inhibiting action, blood coagulation-inhibiting action and cell adhesion-inhibiting action.Utlizing these effects of the peptide derivatives, the following agents which comprise the peptides as active ingredients were provided: platelet aggregation-inhibiting agents that are effective in thrombolus during and after the treatment of thrombolysis and thromboembolism and that can further prevent reobstruction and cardiac infarction; blood coagulation-inhibiting agents that can inhibit blood coagulation which is the main cause of thrombus formation during extracorporeal circulation; cell adhesion-inhibiting agents; tumor metastasis-inhibiting agents; and agents for protecting platelet preparations for blood transfusion.

Abstract: A flight velocity detection system using a truncated pyramid-shape multi-e Pitot probe in which an extreme end portion has a truncated pyramid-shape, a cylindrical hole is provided at the apex thereof, a total pressure tube of a smaller diameter than that of the cylindrical hole is secured at a position by a predetermined length determined by a relationship with the diameter of the cylindrical hole from the extreme end of the cylindrical hole, and groups of pressure holes comprised of a plurality of pressure holes are arranged in each of the truncated pyramid surfaces of the truncated pyramid shape. Items of pressure information detected by the probe are input into a velocity vector processor to convert them into electric signals, and signals are processed using pressure coefficients of the holes of the probe with respect to the velocity vector stored in advance in the velocity vector processor to calculate flight velocity vector (V, .alpha., .beta.

Abstract: Benzamide platelet activating factor antagonists of the following formula (I): ##STR1## wherein ##STR2## B, D: hydrogen atom, etc. E: pyridyl group, etc.n: integer from 0 to 2R.sup.2 : R.sup.3 R.sup.4 N-- etc.(R.sup.3, R.sup.4 : optionally substituted C.sub.6 -C.sub.12 aryl group, etc.) ##STR3## optical antipodes thereof or pharmaceutically acceptable salts thereof, show excellent PAF antagonism and are effective for therapy and prophylaxis of diseases caused by PAF (bronchial asthma, nephritis, shocks, cardiac infarction, cerebral hemorrhage, ulcer, DIC, autoimmune diseases, thrombosis, etc.).

Abstract: Benzamide derivatives of the following formula (I) ##STR1## [wherein R.sup.1 : ##STR2## B, D: hydrogen atom, etc. E: pyridyl group, etc.n: integer from 0 to 2R.sup.2 : R.sup.3 R.sup.4 N-- etc.(R.sup.3,R.sup.4 : optionally substituted C.sub.6 -C.sub.14 aryl group, etc.)A; ##STR3## --CH.sub.2 --, --N.dbd.N--, --CH.dbd.N--, --N.dbd.CH--, --CH.dbd.CH-- or --CH.sub.2 --CH.sub.2 --].Optical antipodes thereof or pharmaceutically acceptable salts thereof, show excellent PAF antagonism and are effective for therapy and prophylaxis of diseases caused by PAF (bronchial asthma, nephritis, shocks, cardiac infarction, cerebral hemorrhage, ulcer, DIC, autoimmune diseases, thrombosis, etc.).

Abstract: A novel heterocyclic compound represented by the following formula (I): ##STR1## wherein X represents an oxygen atom or sulfur atom; R.sup.1 represents a hydrogen atom or halogen atom; R.sup.2 represents a C.sub.4 -C.sub.6 alkyl group, C.sub.2 -C.sub.10 alkoxyalkyl group, C.sub.3 -C.sub.15 alkenyl group, C.sub.7 -C.sub.12 aralkyl group, C.sub.8 -C.sub.18 aralkyloxyalkyl group, C.sub.7 -C.sub.12 aryloxyalkyl group, C.sub.3 -C.sub.10 alkynyl group, C.sub.4 -C.sub.12 alkadienyl group, C.sub.6 -C.sub.18 alkatrienyl group, C.sub.6 -C.sub.12 alkadiynyl group, or C.sub.6 -C.sub.12 alkatriynyl group, said aryloxyalkyl group, alkynyl group, alkadienyl group, alkatrienyl group, alkadiynyl group and alkatriynyl group being capable of having at least one substituent selected from the group consisting of halogen atoms, C.sub.1 -C.sub.4 alkyl group, C.sub.1 -C.sub.4 halogenated alkyl group, phenyl group, hydroxyl group and C.sub.1 -C.sub.4 alkoxy group; and each of R.sup.3 and R.sup.

Abstract: A method of pretreating and hot-dip coating aluminum or aluminum alloys on a chromium-containing steel strip to provide an improved coating comprising annealing final gauge steel strip in an oxygen excess atmosphere to produce a chromium-rich oxide on the surface and thereafter electrolytically descaling the strip in an aqueous salt solution to remove the oxide and to expose a chromium depleted surface of the strip. The strip is then transported to a coating line where it is heated to a temperature at or above the temperature of a bath of aluminum or aluminum alloy. A substantially hydrogen atmosphere is maintained over the bath while the dew point is maintained below minus 35.degree. C. The strip is then drawn through the bath to coat the strip.

Abstract: 4-Imidazoline derivatives represented by the formula (I) and/or formula (II): ##STR1## wherein R.sup.1 represents C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.8 alkenyl, C.sub.3 -C.sub.8 alkynyl, C.sub.3 -C.sub.8 cycloalkyl, or optionally substituted aralkyl; R.sup.2 and R.sup.3 independently represent hydrogen, C.sub.3 -C.sub.20 alkyl, C.sub.3 -C.sub.20 alkenyl, C.sub.3 -C.sub.20 alkynyl, C.sub.3 -C.sub.20 alkoxy, C.sub.3 -C.sub.20 alkenyloxy, C.sub.3 -C.sub.20 alkynyloxy, C.sub.3 -C.sub.8 cyloalkyl, C.sub.1 -C.sub.10 alkylthio, or optionally substituted aralkyl or aralkyloxy; R.sup.4 represents C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.8 cycloalkyl, or optionally substituted aralkyl; provided that R.sup.2 and R.sup.3 cannot be hydrogen at the same time, and pharmaceutically acceptable salts thereof. A pharmaceutical formulation containing the compound is also provided.

Abstract: A lipid-peroxide formation inhibitor useful as a preventive medicine and/or therapeutic medicine against various ischemic diseases and accompanying diseases such as various brain diseases, heart diseases and peripheral circulatory diseases and novel pyrazolone derivatives having such inhibitory activity and their pharmaceutically acceptable salts.

Abstract: Disclosed is a pharmaceutical having circulation ameliorating effect and antiulcer effect containing a prostaglandin I.sub.2 analogue represented by the formula shown below or a non-toxic salt of its salt or a cyclodextrin inclusion compound thereof as the effective ingredient: ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 4 to 7 carbon atoms or a phenyl group; A represents a pentyl group, a cyclopentyl group, a cyclohexyl group, a 1-methyl-3-hexynyl group, a 2-methyl-3-hexynyl group, a 1-methylhexyl group, a 2-phenethyl group, a 1,1-dimethylpentyl group, a 2-methylpentyl group, a 1-cyclohexylethyl group, a 2-methylhexyl group, a 1-methyl-3-pentynyl group or 1 2,6-dimethyl-5-heptenyl group; the double bond between the carbon atoms at 4- and 5-positions is E or Z or a mixture thereof, the asymmetric center in the substituent represented by A is R-configuration or S-configuration or a mixture thereof.

Abstract: A lipid-peroxide formation inhibitor useful as a preventive medicine and/or therapeutic medicine against various ischemic diseases and accompanying diseases such as various brain diseases, heart diseases and peripheral circulatory diseases and novel pyrazolone derivatives having such inhibitory activity and their pharmaceutically acceptable salts.

Abstract: A method of applying an composite polyvinylchloride plastisol coating to a metal sheet and the composite polyvinylchloride coating thereof, which coating is characterized by having high hardness and excellent impression resistance, bleed resistance and formability, wherein the sheet is coated with a composite plastisol composition essentially consisting of a specific polyvinylchloride powder, an acrylic resin powder and an acrylic monomer and/or oligomer. Said method of applying the composite polyvinylchloride plastisol coating to a metal sheet, in certain instances, involving curing the coated sheet metal with ultraviolet rays after heating and embossing the coating. Also provided herewith is a polyvinylchloride plastisol used in such method.

Abstract: According to the present invention, there are provided novel carboxystyrene derivatives of the general formula (I): wherein the symbols are as defined hereinabove. Also provided herein are leukotriene antagonists and phospholipase inhibitors containing the carboxystyrene derivative or pharmaceutically acceptable salt thereof as an effective ingredient.

Abstract: A lipid-peroxide formation inhibitor useful as a preventive medicine and/or therapeutic medicine against various ischemic diseases and accompanying diseases such as various brain diseases, heart diseases and peripheral circulatory diseases and novel pyrazolone derivatives having such inhibitory activity and their pharmaceutically acceptable salts.

Abstract: A dry silver salt roll film for use in the rotary type microphotography is stored in the form of a roll within a range of hardness from 70 of durometer A to 80 of durometer D, so that an unexposed film can be stored stably for a long period of time.

Abstract: There are disclosed a (2-chloro-3-oxo-1-alkenyl)-bicyclo[3.3.0 octene derivative represented by the formula: ##STR1## wherein R.sup.1 represents --CH.sub.2 CH.sub.2 CH.sub.2 COOR.sup.5, --CH.sub.2 CH.sub.2 --O--CH.sub.2 COOR.sup.5, --CH.dbd.CHCH.sub.2 COOR.sup.5 or --CH.sub.2 CH.sub.2 C.tbd.C--COOR.sup.5 group where R.sup.5 in the groups represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; R.sup.2 represents a hydrogen atom, an acyl group having 1 to 7 carbon atoms, a tri(1 to 7 carbon atoms)-hydrocarbylsilyl group or a group forming an acetal bonding with an oxygen atom of a hydroxy group; R.sup.

Abstract: The present invention relates to a sheet which may be used in firing ceramic faced base plates, glass faced base plates and metal faced base plates. The sheet comprises a combustible sheet such as a pulp paper and a coating layer coated on at least one surface of the combustible sheet. The coating layer comprises a powder of a material with a high melting point and a powder of carbon which may be formed separately from the layer comprising the powder of a material having a high melting point. The coating layer comprising the powder of carbon effectively prevents shrinkage of the sheet during firing, and thus prevents adhesion between adjacent stacked base plates and between the base plates and the supporting base. The sheet of the present invention further provides a layer of a uniform breadth which prevents the formation of undulations and pin-holes in the base plates during firing.

Abstract: Disclosed are an aminostyryl compound represented by Formula I: ##STR1## wherein A represents a linking group having 3 to 4 chain members; B represents an unsubstituted or substituted 5 to 6-membered monocyclic type heterocyclic residue containing 1 to 2 hetero atoms, an unsubstituted or substituted condensed heterocyclic residue which contains 5 to 6-membered monocyclic type heterocycle containing 1 to 2 hetero atoms, a naphthyl group or an alkyl group having 5 to 7 carbon atoms,a composition having leukotriene antagonism which contains an aminostyryl compound represented by Formula I as the effective ingredient, and a method of antagonizing SRS based on leukotriene antagonistic activity by employing the same.