摘要:
According to the present invention, ethanol production is carried out with the use of cellulose or cellobiose as a starting material at low cost. The method of the present invention comprises the steps of culturing a microorganism that is classified as a species selected from the group consisting of Ogataea dorogensis, Ogataea pini, Ogataea glucozyma, Ogataea neopini, and Ogataea corticis in a medium containing cellobiose; and collecting ethanol from the medium.
摘要:
A stamper for injection-molding a plastic substrate for an optical disk characterized in that a rear surface of the stamper a surface roughness between 0.3 to 2.0 S.
摘要:
A deflection yoke is constructed of a truncated conical hollow core, a pair of saddle-shaped horizontal deflection coils disposed inside the core, and a pair of toroidal vertical deflection coils wound on the core or a pair of vertical deflection coils wound in a saddle-like configuration and arranged in the vicinity of the core. A pair of cancellation coils opposing each other on an imaginary axis which passes through a central axis of the core in the direction of vertical deflection are arranged near front end sections of the vertical deflection coils, respectively. A central axis of each of said cancellation coils is inclined at a predetermined angle relative to the central axis of the core. The cancellation coils are connected with the horizontal deflection coils, respectively.
摘要:
To solve such a problem of a conventional direct conversion receiver that an image rejection ratio is insufficient owing to analog processing employed to reject an image, the present invention provides such a direct conversion receiver that the image can be rejected by digital signal processing to improve the image rejection ratio and also reduce the hardware load and the processing load. A HILBERT filter of a digital signal processing section shifts a quadrature component digital signal by 90° by HILBERT conversion to provide an output, while a delay circuit delays an in-phase component digital signal by the same delay time as a delay time by the HILBERT filter to provide an output, both of which outputs undergo addition or subtraction at an adder to have the image rejected there and then enter a complex frequency converter, where an offset provided at a local oscillator is removed by frequency conversion processing to output the in-phase component and quadrature component signals.
摘要:
An automated soldering apparatus includes a conveyor for transporting a printed circuit board along a predetermined path, a fluxer located below the conveyor for coating the circuit board and the electronic components with flux, and a preheater located downstream of the fluxer for heating the circuit board and the electronic components to a predetermined temperature. A molten solder bath is provided downstream of the preheater for applying a molten solder to selected areas of the circuit board. A cooling assembly is arranged downstream of and adjacent to the molten solder bath. The cooling assembly is operable to cool the applied molten solder at a rate of approximately as high as 1.0° C. per second until the molten solder reaches its solidus temperature.
摘要:
A disk drive system with a disk loading/ejection control mechanism, includes a disk insertion detection switch for detecting an insertion of a disk and a first cam member for controlling loading and ejection operations of the disk. The first cam member is rotated by a driver to perform loading and ejection of the disk. A loading/ejection position detection switch detects both loading and ejection positions of the disk. A second cam controls the loading/ejection position detection switch, the second cam being co-operatively operated with the first cam. A controller is responsive to the operation of the disk insertion detection switch to drive the driver, and is responsive to both the leading and trailing edges of an output from the loading/ejection position detection switch, for detecting the disk loading and ejection positions to control the driver.
摘要:
According to the present invention, ethanol production is carried out with the use of cellulose or cellobiose as a starting material at low cost. The method of the present invention comprises the steps of culturing a microorganism that is classified as a species selected from the group consisting of Ogataea dorogensis, Ogataea pini, Ogataea glucozyma, Ogataea neopini, and Ogataea corticis in a medium containing cellobiose; and collecting ethanol from the medium.
摘要:
A stepping motor drive control apparatus for controlling the drive of a stepping motor having a plurality of phase coils which are respectively excited to switch the phase. A cycle of a step signal which steps the stepping motor is measured. According to the measured cycle of the step signal, a switching time of the phase coil to be excited is variably set, so that damping and noise are prevented when the stepping motor is driven.
摘要:
Yeast for transformation is provided, which enables introduction of a greater number of copies of a target gene or a greater number of types of target genes. A method provided herein comprises the steps of introducing a target gene into yeast for transformation, which has homothallic properties and a plurality of selection markers, and selecting a strain in which the target gene has been introduced based on the selection markers in the yeast for transformation, whereby multiple target genes were introduced owing to the homothallic properties of the yeast for transformation.
摘要:
A printing plate material producing concave-convex pattern on the surface with a low laser energy output and having high scratch resistance is provided by formation of a photosensitive layer comprising a nitrocellulose, carbon black or other photoabsorber and a polyurethane elastomer on a support. The nitrocellulose has a nitrogen content of about 11 to 12.5% and a solution viscosity of about 1 to 1/8 second. The polyurethane elastomer is obtainable by allowing a polyester polyol to react with a polyisocyanate and a chain-extending agent. Relative to 100 parts by weight of the polyurethane elastomer, the amount of nitrocellulose is about 5 to 300 parts by weight and that of the photoabsorber is about 0.5 to 50 parts by weight. The photosensitive layer may have a glass transition temperature of not lower than 25.degree. C. The photosensitive layer may further comprise a plasticizer.