Abstract: In a screen light computation device, a first polarizing filter (93) blocks P waves reflected by a reflective surface, and screen light; the reflected light sensor (95) receives S waves; a second polarizing filter (83) allows the screen light to pass while blocking the S waves; and a screen light sensor (85), being set at Brewster's angle, where the P waves is not received, still receives some leakage P waves. A screen light extraction computation (LUT; not shown) stores a correlation between the detection value by the reflected light sensor 95 and the detection value by the screen light sensor 85. The LUT is queried, a value of only the screen light that does not include reflected light is computed, and the screen light that does not include ambient light (reflected light) reflected in a display screen of the monitor is detected without turning off a backlight of a monitor.

Abstract: The present invention provides a Brevundimonas sp. strain SD212-derived peptide having ?-ionone ring-2-hydroxylase activity and a gene encoding the same, to thereby make it possible to produce rare carotenoids in which a hydroxyl group is introduced at the position 2(2?) carbon in their ?-ionone ring in large quantities. The present invention also provides a novel gene encoding an enzyme which introduces a hydroxyl group at the position 3(3?) carbon in the ?-ionone ring of carotenoids, and a novel gene encoding a geranylgeranyl pyrophosphate synthase.

Abstract: An optical sheet, a backlight device, and a liquid crystal display device are provided. The beam-condensing optical sheet includes a large number of irregularity portions arranged on one main surface of a light-transmissive base, in which a pitch of arrangement of the irregularity portions is 110 ?m or more and 330 ?m or less, and surface roughness (Ra) of the irregularity portion is 0.1 ?m or less.

Abstract: The present invention provides a Brevundimonas sp. strain SD212-derived peptide having ?-ionone ring-2-hydroxylase activity and a gene encoding the same, to thereby make it possible to produce rare carotenoids in which a hydroxyl group is introduced at the position 2 (2?) carbon in their ?-ionone ring in large quantities. The present invention also provides a novel gene encoding an enzyme which introduces a hydroxyl group at the position 3 (3?) carbon in the ?-ionone ring of carotenoids, and a novel gene encoding a geranylgeranyl pyrophosphate synthase.

Abstract: A display driving integrated circuit includes: a tone display reference voltage generating circuit for generating 64 tone display reference voltages by resistive division on the basis of a predetermined reference voltage; D/A conversion circuits each for performing an analog conversion with respect to display data on the basis of the 64 tone display reference voltages; and 64 reference voltage wires provided in parallel, via which the 64 tone display reference voltages are supplied to the D/A conversion circuits, respectively. The 64 reference voltage wires are provided so that a potential difference corresponds to two tones or more between adjacent two reference voltage wires.

Abstract: A magnetic tape of a linear magnetic recording system is provided that suppresses a lateral tape motion to realize a high track density. A body to be processed (magnetic tape) is allowed to travel in a prescribed direction between a supply roll and a winding troll through guide rolls at a speed, for instance, 400 m/minute. Then, a grinding and polishing tape (lapping tape) using an abrasive material having a particle diameter of 9 ?m is moved to a direction the same as the above-described direction between a supply roll and a winding roll through a pressing roll at a speed, for instance, 14.4 cm/minute. The pressing roll presses the surface of a back coat layer side of the body to be processed by a guide block from an upper part to allow the grinding and polishing tape to come into contact with the surface of the back coat layer of the tape. Thus, a grinding and polishing (lapping) process is carried out to form a texture on the back coat layer.

Abstract: There is provided a magnetic recording medium which is well evaluated in a running reliability, has small amount of seizing on a magnetic head, suppresses a wear rate of the magnetic head, and maintains high reproduction power during running of the magnetic tape for a long time. The magnetic recording medium, in tape form, reproduces a magnetic recorded signal by a reproducing magnetic head utilizing a magnetoresistive effect element, and has a nonmagnetic layer including nonmagnetic powder dispersed in a binder, and a magnetic layer including ferromagnetic powder dispersed in a binder, the nonmagnetic layer and the magnetic layer are successively formed on a long tape-like nonmagnetic substrate, wherein the nonmagnetic layer contains the nonmagnetic powder having pH of 7.5 or more, and wherein the nonmagnetic layer or/and the magnetic layer contain at least one fatty acid amide having an alkyl group having 8 or more carbon atoms.

Abstract: A driver of a display device including two or more display driving sections which share a display screen to perform display control, respectively, the display driving sections each including a setting storage section for storing a mode setting value given by an external controller and a driving voltage generating section for generating a display driving voltage, wherein during display processing, at least one of the display driving sections stores a mode setting value for a master mode to run in the master mode and the other display driving sections receive a driving signal and a driving voltage given by the display driving section running in the master mode to operate in the slave mode.

Abstract: The present invention provides a magnetic recording medium having a preferable electro-magnetic conversion characteristic, while suppressing the self magnetization loss during recording and the thickness loss during reproduction and reducing the surface friction coefficient, which in turn improves the abrasion resistance, running condition, and durability.The magnetic recording medium includes a non-magnetic support body, a non-magnetic layer containing at least a non-magnetic powder dispersed in a binder and formed on the non-magnetic support body, and one or more than one magnetic layers containing ferromagnetic powder dispersed in a binder, wherein the non-magnetic layer contains fatty acid and a magnetic layer serving as the uppermost layer contains alkyl carboxylic acid dimethyl amino alkyl ester. It is preferable that the non-magnetic layer contain 0.05 to 5 weight parts of fatty acid for 100 weight parts of the non-magnetic powder, and the magnetic layer serving as the uppermost layer contain 0.

Abstract: A method for producing 1,4-dihydroxy-2-naphthoic acid which comprises the steps of: subjecting 1,4-dihydroxynaphthalene into an alkali metal salt formation reaction in an organic medium capable of dissolving 1,4-dihydroxynaphthalene using an alkali metal alcoholate; and subjecting the salt formation reaction mixture to carboxylation using carbon dioxide gas.

Abstract: A method for producing 2,6-dihydroxybenzoic acid, which comprises heating an aqueous solution which contains a mixture of 2,6-dihydroxybenzoic acid and 2,4-dihydroxybenzoic acid and has a pH value of 4 or more, to selectively decompose 2,4-dihydroxybenzoic acid, and separating 2,6-dihydroxybenzoic acid from the decomposition reaction mixture.

Abstract: A process for producing 2-methyl-1,3-cyclohexanedione which comprises subjecting 1,3-cyclohexanedione, formaldehyde and a dialkylamine to Mannich reaction to obtain a 2-dialkylaminomethyl-1,3-cyclohexanedione, and subjecting the 2-dialkylaminomethyl to hydrogenolysis, and a process for producing 2-methylresorcinol which comprises aromatizing 2-methyl-1,3-cyclohexanedione obtained. According to these processes, it is possible to produce high-purity 2-methylresorcinol and 2-methyl-1,3-cyclohexanedione commercially easily and advantageously.

Abstract: Pure 1,4-dihydroxy-2-arylnaphthoate is prepared in high yield by allowing 1,4-dihydroxy-2-naphthoic acid to react with triarylphosphite in the presence of an acid catalyst selected from organic and inorganic acids and crystallizing from a mixed solvent consisting essentially of lower alcohols and water until 1,4-dihydroxy-2-naphthoic acid is isolated and is further purified by crystallization from a mixed solvent consisting essencially of lower alcohols, water and extraction solvent, i.e., alkyl-substituted aromatic hydrocarbons or halogen-substituted aliphatic or aromatic hydrocarbons.

Abstract: Pure 1,4-dihydroxy-2-arylnaphthoate is prepared in high yield by allowing 1,4-dihydroxy-2-naphthoic acid to react with triarylphosphite in the presence of an acid catalyst selected from organic and inorganic acids and crystallizing from a mixed solvent consisting essentially of lower alcohols and water until 1,4-dihydroxy-2-naphthoic acid is isolated and is further purified by crystallization from a mixed solvent consisting essentially of lower alcohols, water and extraction solvent, i.e., alkyl-substituted aromatic hydrocarbons or halogen-substituted aliphatic or aromatic hydrocarbons.

Abstract: Substituted aminoanthraquinone compounds, which are used for dye stuffs or intermediate thereof, represented by the formula (II) ##STR1## wherein R.sub.3 represents a C.sub.1 -C.sub.6 alkyl group which may be substituted, X represents a hydrogen atom, --COR.sub.1 or --SO.sub.2 R.sub.2 wherein R.sub.1 and R.sub.2 each represents a substituted or unsubstituted C.sub.1 -C.sub.4 alkyl or C.sub.6 -C.sub.12 aryl group, and Y and Z represent independently a hydrogen atom, a halogen atom, a nitro group or a C.sub.1 -C.sub.4 alkyl group, is prepared by allowing anthraquinone compounds represented by the formula ##STR2## wherein X, Y and Z are as defined above, to react with alkylating agents in organic solvents in the presence of organic quaternary ammonium salts and alkalies.

Abstract: An outboard engine is supported on a casing which forms an internal discharge chamber having an opening at its top end and a discharge passage with a discharge port near its lower end. The cooling water discharge pipe and an exhaust pipe discharge into the chamber, the cooling water discharge pipe doing so at a lower elevation than the exhaust pipe. A water storage chamber is formed between the casing and the exhaust pipe in heat transfer relationship therewith, and circulation of water is provided to and from the water storage chamber.

Abstract: Rubber bushings used in suspending an outboard engine are protected against thermal degradation by cooling them. Preferably the engine exhaust pipe is cooled near a supporting casing further to protect the bushings from overheating.

Abstract: Marine propulsion unit having a propeller assembly formed with exhaust gas passages through the propeller hub. An outer pipe is provided to encircle the propeller hub with a radial spacing and has a rear end extending beyond the rear end of the hub so that the exhaust gas is forced to flow, during a reverse movement, from the exhaust gas passage in the hub to the space between the hub and the outer pipe.

Abstract: In a semi-insulating gallium arsenide single crystal containing at least one of deep acceptor impurities and at least one of deep donor impurities and having a resistivity of at least about 10.sup.6 .OMEGA..multidot.cm at 300 .degree. K., (1) at least one of the deep donor impurities is oxygen, the oxygen concentration in the single crystal being at least about 4.times.10.sup.16 cm.sup.-3, while the silicon concentration in the single crystal being simultaneously at most about 2.times.10.sup.15 cm.sup.-3, (2) at least one of the deep acceptor impurities is chromium, the chromium concentration in the single crystal being within a range of about 3.times.10.sup.15 to about 3.times.10.sup.17 cm.sup.-3 and (3) at least one of tellurium, tin, selenium and sulfur is contained as another shallow donor impurity than silicon so to satisfy the relationship of N.sub.AA >N.sub.D -N.sub.A >-N.sub.DD wherein N.sub.AA represents the sum of concentrations of the deep acceptor impurities including chromium, N.sub.