摘要:
A quadrature detection device for magnetic resonance imaging includes a pair of probes each having a pair of first conductors with a vertical arm and wings formed at both ends of the vertical arm and guard rings disposed inside the wings to oppose them and predetermined capacitors. In each probe, the resonance characteristics of the probe has two peaks. Symmetry of the peak existing in the resonance frequency range is effected by spacing the peak existing in a frequency range other than the resonance frequency range apart from the former. Thus, uniformity of the resulting image can be improved. The drop of the Q value of the probe is prevented by shifting the former peak to a higher frequency range than the latter peak. Also, electric symmetry of the probe is maintained.
摘要:
A mobile communication base station antenna has a plurality of polarization diversity antenna blocks, each of the polarization diversity antenna blocks including a plurality of polarization diversity antenna elements, each of the polarization diversity antenna elements including antenna elements that are disposed to be orthogonal to each other. The polarization diversity antenna elements of one of the polarization diversity antenna blocks are interposed between the polarization diversity antenna elements of another one of the polarization diversity antenna blocks, and tilt angles in the vertical plane of the respective polarization diversity antenna blocks are different from each other.
摘要:
An LED drive circuit connectable to a phase control type light adjuster includes a first reference voltage generation portion that generates a first reference voltage, a second reference voltage generation portion that generates a second reference voltage according to a phase angle of the light adjuster, an input voltage detection portion that detects a size relationship between an input voltage and a threshold value voltage, a current draw-out portion that draws out a current in accordance with the first reference voltage or the second reference voltage from an electricity supply line that supplies electricity to an LED drive portion, and a switch portion that in accordance with a detection result by the input voltage, detection portion, performs switching between an output from the first reference voltage generation portion to the current draw-out portion and an output from the second reference voltage generation portion to the current draw-out portion.
摘要:
An LED drive circuit is provided that can be connected to an alternating current power source via a phase-control light controller and drives an LED load. The LED drive circuit includes: a switching power source portion having a switching element, a switching current detection portion that detects a switching current, and an LED current detection portion that detects an LED current; a first subtraction portion that subtracts a given value from an output of the switching current detection portion; a first determination portion that determines, through computation on a plurality of externally inputted voltages, a target value to which the switching current is limited; a second subtraction portion that subtracts a given value from an output of the LED current detection portion; a second determination portion that determines, through computation on a plurality of externally inputted voltages, a target value of the LED current; a switching current limitation portion that, if a result of the subtraction by the first subtraction portion exceeds a result of the determination by the first determination portion, switches off the switching element so as to limit the switching current; and an LED current control portion that drives the switching element to control the LED current so that a result of the subtraction by the second subtraction portion coincides with a result of the determination by the second determination portion.
摘要:
The present invention provides a W/O nanoemulsion which remains stable even if stored for long periods of six months, for example. The W/O nanoemulsion of the present invention comprises: a) a water content of greater than 0 wt % but no greater than 30 wt %; b) an oil content of less than 100 wt % but no less than 70 wt %; c) 1 to 30 parts by weight of at least one nonionic surfactant for every 100 parts by weight of oil, the nonionic surfactant having an HLB value of 1 to 10; and d) 0.1 to 30 parts by weight of at least one selected from the group consisting of an anionic surfactant, a cationic surfactant, and an amphoteric surfactant, for every 100 parts by weight of water, wherein the average particle size of 50% of the water particles in the W/O nanoemulsion is 100 nm or less.
摘要:
A method for producing a molded body in which the matrix of a composite material is prevented from penetrating into a carbon foam. Specifically, a method for producing a molded body (1) that comprises: disposing a thermosetting adhesive (3) on a porous body (2), disposing a composite material (4) containing a thermosetting resin as a matrix on the adhesive (3), curing the adhesive (3), and liquefying and curing the matrix of the composite material (4) after the adhesive has been cured. In this production method, because the cured adhesive (3) bonds strongly to the porous body (2) before the matrix of the composite material (4) is liquefied, the subsequently liquefied matrix of the composite material (4) can be prevented from penetrating into the interior of the porous body (2).
摘要:
The present invention is to provide a heat treatment method for effectively eliminating Te deposits in a ZnTe single crystal substrate, and a ZnTe single crystal substrate having an optical characteristic suitable for use of a light modulation element and having a thickness of 1 mm or more. A heat treatment method of a ZnTe single crystal substrate, includes: a first step of increasing a temperature the ZnTe single crystal substrate to a first heat treatment temperature T1, and retaining the temperature of the substrate for a predetermined time; and a second step of gradually reducing the temperature of the substrate from the first heat treatment temperature T1 to a second heat treatment temperature T2 lower than the heat treatment temperature T1 with a predetermined rate, wherein the first heat treatment temperature T1 is set in a range of 700° C.≦T1≦1250° C. and the second heat treatment temperature T2 is set in a range of T2≦T1−50.
摘要:
An information processing apparatus acquires communication setting information for communicating with an image processing apparatus by a second communication unit via a first communication unit. In accordance with the acquired communication setting information, communication by the second communication unit is established to execute, via the second communication unit, an image processing service provided by the image processing apparatus. When establishment of communication is detected, an operation window display request for executing the image processing service is transmitted via the second communication unit. The image processing apparatus receives the operation window display request from the information processing apparatus via the second communication unit. In accordance with the received operation window display request, an operation window for executing the image processing service is displayed. Image processing for input image data is executed on the basis of the settings set via the displayed operation window.
摘要:
Disclosed is a technique capable of preventing occurrence of warping in a nitride compound semiconductor layer, and by which a nitride compound semiconductor layer having small variations in the in-plane off angle can be grown with good reproducibility. Specifically disclosed is a method for producing a nitride compound semiconductor substrate using an HVPE process, wherein a low-temperature protective layer is formed on a rare earth perovskite substrate at a first growth temperature (a first step), and a thick layer composed of a nitride compound semiconductor is formed on the low-temperature protective layer at a second growth temperature that is higher than the first growth temperature (a second step). In the first step, the supply amounts of HCl and NH3 are controlled so that the supply ratio of HCl to NH3, namely the supply ratio III/V is 0.016-0.13, and the low-temperature protective layer has a film thickness of 50-90 nm.
摘要:
A butt welding system and a butt welding method of steel plate by which the quality of a product can be ensured. Butting portions of blank members (1,2) to be joined together are butted and a predetermined butting load is applied to the butting portion, wherein the blank members (1,2) are moved relatively in the direction of the welding line thus matching the butting portions. Protrusions and recesses formed on each butting portion of each blank member (1,2) are flattened, whereby linear precision at each butting portion of each blank member (1,2) is enhanced as compared with a case where the butting portions are not matched. Since the gap is reduced extremely at the butting portion, welding is facilitated at the butting portion. Good welding beads are thereby obtained at the butting portion and the quality of a product is ensured.