摘要:
A light emitting element has a substrate of gallium oxides and a pn-junction formed on the substrate. The substrate is of gallium oxides represented by: (AlXInYGa(1−X−Y))2O3 where 0≦x≦1, 0≦y≦1 and 0≦x+y≦1. The pn-junction has first conductivity type substrate, and GaN system compound semiconductor thin film of second conductivity type opposite to the first conductivity type.
摘要:
An electron beam irradiation apparatus and method capable of easily curing at least part of a surface layer and/or a resin layer composed of materials that are hard to be cured by irradiation of ultraviolet rays. A disc-shaped object manufacturing apparatus and method capable of efficiently forming, on the disc-shaped object, at least part of a surface layer and/or a resin layer such as light transmitting layer, etc, thereunder. An electron beam irradiation apparatus comprises a rotary driving unit for rotationally driving an object, a shield container rotatably accommodating the object, and an electron beam irradiation unit provided in the shield container so that the surface of the object is irradiated with electron beams from an irradiation window thereof, wherein the surface of the object is irritated with the electron beams during its rotation from the irradiation window of the election beam irradiation unit. The surface of the on-rotating object can be thereby irradiated with the electron beams having larger energy than the ultraviolet rays have.
摘要:
An electron beam irradiation apparatus includes an electron beam emission section having an electron beam irradiating tube that emits an electron beam; an electron beam irradiation section for irradiating the emitted electron beam to a target; a transfer mechanism for transferring the target to the electron beam irradiation section; a rotation mechanism for rotating the target on its own axis when irradiating the electron beam; and a linear movement mechanism for generating a relative linear movement such that the electron beam irradiating tube passes right above the target, between the target and the electron beam irradiating tube, when irradiating the electron beam. The linear movement mechanism generates a relative linear movement such that the electron beam irradiating tube goes from an end portion of the target toward the center of the target and turns back before the center of the electron beam emitting portion of the electron beam irradiating tube reaches the center of the target.
摘要:
An electron beam irradiation apparatus includes a turn-transfer mechanism; a turn-transfer chamber; an electron beam irradiation section; a replacement room configured to bring a target into and out of the turn-transfer chamber; an outer irradiation target holding table configured to form a part of the replacement room, and including an X-ray shielding mechanism, an airtightness maintaining mechanism, and a target holding mechanism; an inner irradiation target holding table, configured to form a part of the replacement room, and including an X-ray shielding mechanism, an airtightness maintaining mechanism, and a target holding mechanism, the inner irradiation target holding table being supported by the turn-transfer mechanism; a turning mechanism configured to turn the turn-transfer mechanism and an elevator mechanism configured to move the turn-transfer mechanism up and down; and a rotation mechanism disposed at the electron beam irradiation section and configured to rotate the target.
摘要:
A crystalline polyesterpolyol having a number average molecular weight of 1,500 to 15,000 and obtainable from a polybasic carboxylic acid component and an aliphatic hydrocarbon diol component comprising 1,10-decanediol and/or 1,12-dodecanediol, and a hot-melt adhesive comprising a reaction product of a polyisocyanate and a polyesterpolyol, which contains a crystalline polyesterpolyol having a number average molecular weight of 1,500 to 15,000 and obtainable from a polybasic carboxylic acid component and an aliphatic hydrocarbon diol component comprising 1,10-decanediol and/or 1,12-dodecanediol are provided.
摘要:
A Cardan-type universal joint has a pair of joint bodies (11) each having a cylindrical hub (12) for securing thereto a rotary shaft (10), and a cross-shaped member (15) for connecting the pair of joint bodies together. Each of the hubs has at least one first slit, or escape slit, (20) formed therein radially inwardly from the circumference thereof having a sector shape with a sectoral angle of not less than 180 degrees and being disposed on a plane intersecting the axis of the shaft at an angle, thereby enabling the joint body to elastically deform in a spring-like manner.
摘要:
B1 distribution is calculated in a short time with a high degree of precision, and a high quality image is obtained. In the RF shimming for irradiating electromagnetic waves using an RF coil having multiple channels, the absolute values of subtraction images between multiple reconstructed images are used to calculate a transmitting sensitivity distribution which is necessary for calculating inter-channel phase difference and amplitude ratio of RF pulses provided to the respective channels. Those multiple reconstructed images are obtained by executing the imaging sequence after applying a prepulse at different flip angles respectively. Assuming an image obtained with a minimum flip angle as a reference image, for instance, the subtraction images are created between the reference image and the other respective images. It is also possible that multiple subtraction images being obtained are divided by one another, and the transmitting sensitivity distribution is created on the basis of the division result.
摘要:
Disclosed is a polyimide foam made of an aromatic polyimide composed of a tetracarboxylic acid component, which is composed of 0 to 90% by mole of a 3,3′,4,4′-biphenyltetracarboxylic acid component and 100 to 10% by mole of a 3,3′,4,4′-benzophenone tetracarboxylic acid component and/or a 2,3,3′,4′-biphenyltetracarboxylic acid component, and a diamine component, which is composed of 50 to 97% by mole of m-phenylenediamine and 50 to 3% by mole of 4,4′-methylenedianiline. The polyimide foam can be produced easily, has uniform and fine cells, and has the mechanical properties required for practical use as a foam, such as flexibility that prevents the foam from cracking easily even when deformed and excellent cushioning properties, as well as heat resistance that can resist use at high temperatures.
摘要:
B1 distribution is calculated in a short time with a high degree of precision, and a high quality image is obtained. In the RF shimming for irradiating electromagnetic waves using an RF coil having multiple channels, the absolute values of subtraction images between multiple reconstructed images are used to calculate a transmitting sensitivity distribution which is necessary for calculating inter-channel phase difference and amplitude ratio of RF pulses provided to the respective channels. Those multiple reconstructed images are obtained by executing the imaging sequence after applying a prepulse at different flip angles respectively. Assuming an image obtained with a minimum flip angle as a reference image, for instance, the subtraction images are created between the reference image and the other respective images. It is also possible that multiple subtraction images being obtained are divided by one another, and the transmitting sensitivity distribution is created on the basis of the division result.
摘要:
Disclosed is a polyimide foam made of an aromatic polyimide composed of a tetracarboxylic acid component, which is composed of 0 to 90% by mole of a 3,3′,4,4′-biphenyltetracarboxylic acid component and 100 to 10% by mole of a 3,3′,4,4′-benzophenone tetracarboxylic acid component and/or a 2,3,3′,4′-biphenyltetracarboxylic acid component, and a diamine component, which is composed of 50 to 97% by mole of m-phenylenediamine and 50 to 3% by mole of 4,4′-methylenedianiline. The polyimide foam can be produced easily, has uniform and fine cells, and has the mechanical properties required for practical use as a foam, such as flexibility that prevents the foam from cracking easily even when deformed and excellent cushioning properties, as well as heat resistance that can resist use at high temperatures.