摘要:
Disclosed is a method of manufacturing a two-dimensional phase type element, which includes the steps of forming, on a substrate, a first etching mask in a checkered pattern, forming segments of multiple levels at a portion not covered by the first mask, forming a second etching mask corresponding to an inversion of the first etching mask, removing the first etching mask, and forming segments of multiple levels at a portion not covered by the second etching mask.
摘要:
A high-pressure mercury discharge lamp comprises a light-transmitting discharge vessel having a region surrounding a discharge space and seal portion, a spaced apart electrodes disposed in the discharge vessel and defining a discharge path, and a filling contained in the discharge vessel including mercury, halogen and lithium (Li). Components of the filling are selected such that a ratio of relative spectral energies B/A is within a range 0.15 to 0.45; wherein A represents the relative spectral energy of mercury (Hg) within a wavelenth range of 402.5 nm to 407.5 nm, and B represents the rlative spectral energy of lithium (Li) within a wavelength range of 667.5 nm to 672.5 nm.
摘要:
The non-oriented electrical steel sheet having the following chemical composition: C: 0.01% or less, Si: 2.5% or less, Mn: 2% or less, Al: 1 to 5%, Si+Al+0.5×Mn: 2.5 to 5%, with a sheet thickness of 0.1 to 0.4 mm, an average grain diameter of 50 to 180 &mgr;m and a Vickers hardness of 130 to 210. The steel sheet is excellent in workability such as punchability and interlocking performance for forming it into cores for motors and also has a lower iron loss and higher magnetic flux density, and thus when used as a core in a motor, achieves the high a motor efficiency. The steel sheet is particularly suitable as a material for cores in inverter-controlled motors.
摘要:
The present invention provides a method for producing high purity aluminum by immersing a cooling body in molten aluminum, and forming and growing crystals of the high purity aluminum on the cooling body by rotating the cooling body and introducing bubbles of a gas into the rotating molten aluminum by the rotation of the cooling body.
摘要:
A DC glow discharge lamp is disclosed, in which one the pinch seal portions of an arc tube of quartz glass with an anode and a cathode arranged therein in opposed relation to each other is bonded to a base by means of a ceramic adhesive containing a binder, and a conductive member connected around the cathode-side pinch seal portion is mounted in such a manner as to assume the same potential as the cathode. Even in the case where the binder mixed in the ceramic adhesive for improving the bonding strength is vaporized, it attaches to the conductive member and assumes a negative potential and thus is prevented from attaching to the cathode-side pinch seal portion. The devitrification of the pinch seal portion or the leakage therefrom which otherwise might occur due to the binder are thus suppressed, thereby providing a DC glow discharge lamp with an improved service life.
摘要:
A valve guide member for internal combustion engines is formed of an Fe-based sintered alloy having excellent wear and abrasion resistance, consisting essentially, by weight %, of 1 to 4% C, 1.5 to 6% Cu, 0.1 to 0.8% P, and if required 0.05 to 1% Mo, and the balance of Fe and inevitable impurities, the Fe-based sintered alloy having a structure having a matrix formed mainly of pearlite, in which are dispersed hard Fe--C--P compounds and free graphite, or alternatively hard Fe--C--P compounds, carbides, and free graphite when the alloy contains Mo, the free graphite including 0.5 to 10 area % coarse free graphite having a particle diameter of 70 to 500 .mu.m.
摘要:
One-step method for preparing 17 .alpha.-ester-21-halo pregnanes by reacting 17 .alpha., 21-cyclic orthoesters of 17 .alpha., 21-dihydroxy pregnanes with a halo compound in the presence of an organic polar solvent, simultaneously resulting in halogenation at 21-position and esterification at 17 .alpha.-position of said 17 .alpha., 21-cyclic orthoesters, the reaction proceeding in a short period of time without, or substantially without, any unfavorable side-reactions.
摘要:
An exhaust chamber (34) for a motorcycle is disposed at a location upstream of a muffler (36) of an exhaust passage (38) leading from a combustion engine (E). The exhaust chamber (34) includes a chamber body (40) having expansion compartments (41, 42, 43) defined therein, a chamber outlet pipe (46) having an outlet passage defined therein for discharging the exhaust gases (G) from the chamber body (40), and an exhaust control valve (72) disposed in the chamber outlet pipe (46) for adjusting the sectional area of the outlet passage inside the chamber outlet pipe (46).
摘要:
The present invention aims to provide an organic thin film transistor that is superior in stability in the atmosphere and that has a high operation speed. The organic thin film transistor according to the present invention includes three kinds of terminals consisting of a gate electrode, a source electrode, and a drain electrode, an insulator layer that insulates the gate electrode from the source electrode and from the drain electrode, and an organic semiconductor layer; the terminals, the insulator layer, and the organic semiconductor layer being disposed on a substrate; the organic thin film transistor controlling a source-to-drain electric current by a voltage applied to the gate electrode, and the organic thin film transistor is characterized by further including a crystallinity control layer that is formed from a crystalline compound that controls crystallinity of the organic semiconductor layer, and is characterized in that the organic semiconductor layer is formed on the crystallinity control layer and contains a compound having heterocyclic groups or a compound having a quinone structure. The organic thin film light-emitting transistor according to the present invention is characterized in that either one of the source electrode and the drain electrode of the organic thin film transistor is formed of a hole-injecting electrode, and the other electrode is formed of an electron-injecting electrode.
摘要:
The present invention provides an exposure apparatus which exposes a substrate via a liquid, the apparatus including a projection optical system configured to project a pattern of a reticle onto the substrate, a liquid supply unit configured to supply the liquid between the projection optical system and the substrate, a blowing nozzle which is arranged around the projection optical system on a side of the substrate and configured to blow a gas around the liquid supplied between the projection optical system and the substrate, and an exhaust unit configured to exhaust the gas in a space between the blowing nozzle and the liquid supplied between the projection optical system and the substrate, the exhaust unit including a removal member configured to remove a volatile component which volatilizes from the liquid and is contained in the gas in the space.