摘要:
A supported catalyst for fuel cell includes a conductive carrier and platinum supported on the conductive carrier. A 90% particle diameter D90 on a cumulative particle size curve obtained by determining a particle size distribution of the supported catalyst by a light scattering method is 28 μm or less.
摘要:
A fuel cell catalyst in which catalyst particles are supported on a carrier is provided, wherein the value of the average catalyst carrier pore diameter/the catalyst metal (PGM) particle diameter is 0.5 to 1.8. Such fuel cell catalyst is less likely to cause voltage drops even after being used for a long period of time.
摘要:
[Problem to be Solved] To film deposit a group III nitride such as GaN using atmospheric pressure plasma.[Solving Means] A reactor chamber 12 is filled with a pure nitrogen of approximately atmospheric pressure of about 40 kPa. A c-face sapphire substrate 90 is placed on an electrode 14. The substrate temperature is brought to 650 degree centigrade by a heater 15. An electric field is applied between electrodes 13, 14 to form a discharge space 11a therebetween. In a gas feed system 20, a small quantity of trimethylgallium is added to N2, the resultant is fed into a discharge space 11a and brought into contact with the sapphire substrate 90. A V/III ratio on the substrate 90 is brought into a range of from 10 to 100000.
摘要:
An object of the present invention is to reduce the amount of catalytic metal such as Pt in a fuel cell. The present invention provides a fuel cell electrode catalyst comprising a conductive carrier and catalytic metal particles, wherein the CO adsorption amount of the electrode catalyst is at least 30 mL/g·Pt.
摘要:
Provided is image processing technology capable of displaying lines on a field clearly on a screen regardless of the distance to the viewpoint or the visual direction. This image processing method has a step for disposing a linear model formed from multiple polygons in a coordinate system of a three dimensional space based on an image processing program stored in a memory, a step for setting a viewpoint in the coordinate system, a step for performing perspective transformation to the model viewed from the viewpoint, and a step for drawing a linear texture having a prescribed dot width in a frame buffer at a coordinate position after the perspective transformation of the model. The linear texture is drawn on the model in a width of minimum dots regardless of the width occupying the coordinates after the perspective transformation of the model.
摘要:
A test probe for semiconductor devices, the test probe having a tip portion which is pressed against a test pad of a semiconductor device to establish electrical contact between the tip portion and the pad for testing the operation of the semiconductor device, wherein the probe is formed to have a tip shape with an angle of not less than 15 degrees formed at the surface of the pad between a tangential line with respect to a tip face of the probe and the pad surface when the probe is pressed against the pad, the tip shape of the probe having a spherical surface meeting the relationship of: θ=cos−1(1−t/R)≧15° where the radius of curvature of the spherical surface is R, the thickness of the pad is t, and the angle formed at the pad surface between the tangential line with respect to the probe tip face and the pad surface when the probe is pressed against the pad is θ, the probe have a flat portion at an end of the tip portion. Accordingly, a contact surface can be established between the probe trip and the pad with a sufficient degree of electrical continuity, and when the the probe level is adjusted in the probing, a time required for positioning the probe prior to the start of measurement is cut down and variation in measurement are reduced.
摘要:
A waveform observing jig for observing a waveform of a signal outputted from a predetermined signal terminal, comprises: a contact for a signal, for contacting with a signal terminal of a board to be observed, and a plurality of contacts for a ground, for contacting with a ground pattern of the board to be observed, wherein at least one contact for a ground is in contact with the ground pattern of the board to be observed when the contact for a signal is in contact with a predetermined signal terminal of the board to be observed.