摘要:
The present invention provides a Brevundimonas sp. strain SD212-derived peptide having β-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 β-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 β-ionone ring of carotenoids, and a novel gene encoding a geranylgeranyl pyrophosphate synthase.
摘要:
The present invention provides a Brevundimonas sp. strain SD212-derived peptide having β-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 β-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 β-ionone ring of carotenoids, and a novel gene encoding a geranylgeranyl pyrophosphate synthase.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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 μm or more and 330 μm or less, and surface roughness (Ra) of the irregularity portion is 0.1 μm or less.
摘要:
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.
摘要:
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.
摘要:
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 μm or more and 330 μm or less, and surface roughness (Ra) of the irregularity portion is 0.1 μm or less.
摘要:
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.