摘要:
A field emission element including a gate and an emitter and capable of preventing any of the element oxide layer from being formed on a tip of the emitter to prevent a decrease in emission current, unstable operation and an increase in noise. The gate has a surface formed of a material of oxygen bonding strength higher than that of a material for at least a tip surface of the emitter, so that oxygen atoms and molecules containing oxygen entering the gate may be captured by adsorption on the gate to prevent formation of any oxide layer on the emitter. When a portion of the emitter other than the tip surface is formed of a material of oxygen bonding strength higher than that of the material for the tip surface, formation of any oxide layer on the tip surface of the emitter is minimized.
摘要:
Impurities such as halides and ammonia are efficiently removed from a gas containing Sox at a high concentration without any substantial addition of fresh water in a process for purifying a sulfur oxides-containing gas. The process involves passing a gas containing sulfur oxides and impurities at a high concentration successively through a first washing column and thence through a second washing column, thereby water washing the gas through the two washing columns to remove the impurities from the gas. The first washing column is operated so that the outlet temperature of the gas from the first washing column is at a temperature at which the gas can have a maximum water content or a temperature near this temperature, and the second washing column is operated such that the outlet temperature of the gas from the second washing column at least 20.degree. C. lower than the outlet temperature of the gas from the first washing column.
摘要:
A LED driving apparatus includes a rectifying circuit, first, second and third blocks, and first and second switching portions. The rectifying circuit is connected to AC power supply, and rectifies AC voltage of the AC power supply to provide pulsating current voltage. Each block includes a plurality of LEDs. The first, second and third blocks are serially connected to the output side of the rectifying circuit. The first switching portion switches ON/OFF of a first bypass path based on flowing current amount in the first block. The first bypass path bypasses the second block. The second switching portion switches ON/OFF of a second bypass path based on flowing current amount in the first and second blocks. The second bypass path bypasses the third block.
摘要:
The ability to hot work RE-Fe-B type compositions to form anisotropic magnets containing Nd.sub.2 Fe.sub.14 B.sub.1 -type crystal grains is improved by the addition of suitable, small amounts of one or more of cerium, lanthanum or yttrium. The improvement in hot working is seen in the reduction of cracks in the deformed body and in the ability to reduce the hot working temperature without a significant penalty in magnetic properties.
摘要翻译:通过添加合适少量的铈,镧或钇中的一种或多种,可以改善热加工RE-Fe-B型组合物以形成含有Nd 2 Fe 14 B 1型晶粒的各向异性磁体的能力。 在变形体的裂纹减少以及降低热加工温度的能力下,在磁特性上没有显着损失的情况下,观察到热加工的改善。
摘要:
A method of forming a cylindrical compact for a cylindrical magnet is improved by moving a core pin and a die of a mold at the same time of pressing magnet materials with a pressing punch in the same direction as that of the pressing punch at travelling speed Vc and Vd indicated by following equation:Vc=m.multidot.Vp(0.5.ltoreq.m.ltoreq.1.0)Vd=n.multidot.Vp(0.5.ltoreq.n.ltoreq.1.0)where Vc is the travelling speed of the core pin, Vd is the travelling speed of the die and Vp is the pressing speed of the pressing punch. It is possible to form the thin-walled elongated cylindrical compact by utilizing the frictional force caused between the mold and the magnet materials for forming the compact very effectively in order to obtain a thin walled elongated cylindrical magnet.
摘要:
An IC chip coating material includes first metal oxide particles; a metal alkoxide; an organic solvent; and second metal oxide particles and/or flat particles of a composite oxide, the second metal oxide particles having a composition identical to or different from that of the first metal oxide particles and also having a mean particle size and/or a shape different from that of the first metal oxide particles. Further, a vacuum fluorescent display device includes an IC chip, wherein the IC chip is at least partially coated by a coating material layer including the first metal oxide particles; a metal forming metal alkoxide; and the second metal oxide particles and/or flat particles of a composite oxide.
摘要:
There is disclosed a waste gas treatment apparatus in which dust concentration at a treated gas outlet is sufficiently reduced and the desulfurizing efficiency and denitrating efficiency of grains are increased. The waste gas treatment apparatus includes an inlet member, an outlet member, a moving layer of the grains therebetween, a first perforated plate disposed between the inlet member and the outlet member for defining a front chamber in combination with the inlet member, a second perforated plate disposed between the inlet member and the outlet member for defining an intermediate chamber in combination with the first perforated plate and for defining a rear chamber in combination with the outlet member, and flow controllers for setting the moving speed of grain in the front, intermediate and rear chambers. The moving speed of grains in the front chamber is higher than that in the intermediate chamber and the moving speed of grains in the intermediate chamber is higher than that in the rear chamber.
摘要:
A field emission device capable of facilitating manufacturing thereof. A cathode substrate is formed on the same plane thereof with gate terminals and cathode electrode each having an end acting as a cathode terminal, on which an insulating layer is arranged. The insulating layer is formed thereon with gate lines 8, which are connected to the gate terminals through a conductive film deposited in contact holes formed during formation of the gate electrodes.
摘要:
A desulfurizing and denitrating apparatus wherein an inner space of a tower body, which has an introduction port for a gas to be processed and a processed gas discharge port formed respectively in opposite side walls, is partitioned in a direction from the side wall having the processed gas introduction port toward the side wall having the processed gas discharge port by an inlet louver, a perforated plate and an outlet louver all extending vertically parallel to each other, a constant-rate discharging device for setting a moving speed of a carbon-base adsorbent in a small chamber defined between the inlet louver and the perforated plate and a constant-rate discharging device for setting a moving speed of a carbon-base adsorbent in a large chamber defined between the perforated plate and the outlet louver are provided, the moving speed of the carbon-base adsorbent in the small chamber is set to be 2 to 4 times greater than an average moving speed, and the distance from the inlet louver to the perforated plate is set to be 0.1 to 0.2 time the distance from the inlet louver to the outlet louver. The carbon-base adsorbent can be prevented from being loaded with dust in the vicinity of the inlet louver, the SO.sub.2 content can be sufficiently lowered in the small chamber, and hence the denitration rate in the large chamber can be increased.
摘要:
A method for producing an anisotropic rare earth magnet is improved by applying compressing stress on a free surface of an compacted material at the time of extruding the compacted material in order to prevent forming cracks, and improved by using a double action punch provided with a core punch and a sleeve punch so as to mold a compacted material and extrude the compacted material into the anisotropic magnet material in a single heat process continuously.