摘要:
A method for manufacturing a semiconductor optical device includes: forming a first resist pattern on top surface of a laminated semiconductor structure; forming channels and a waveguide ridge by dry etching using the first resist pattern as a mask; forming an SiO2 film on the waveguide ridge and the channels, leaving the first resist pattern on a top surface of the waveguide ridge; forming a second resist pattern covering the SiO2 film on the channels, and exposing the top surface of the SiO2 film on top of the waveguide ridge; removing the SiO2 film by dry etching using the second resist pattern as a mask; removing the first and second resist patterns by a wet method; and forming a p-side electrode.
摘要:
In a communication control system for controlling packet transfer conducted by a plurality of logical channels between nodes, a circuit is provided for recording, in a descriptor for recording information regarding transfer by each logical channel, information including a stop bit, an activation bit, the number of logical channel to be activated, an identification value, the number of logical channel to be monitored and a monitoring identification value which are information regarding the order of transfer by each logical channel, and a data link layer includes a circuit for executing transfer by each logical channel based on the order of transfer by each logical channel designated by a descriptor.
摘要:
The process for producing an olefinic polymer comprises introducing a saturated aliphatic hydrocarbon in a liquid phase state and in a vapor phase state into the aforementioned fluidized-bed and (co)polymerizing in the condition that when the inside radius of the cylinder section of the fluidized-bed reactor is defined as a distance of 1, the relationship between the concentration (C1) of the saturated aliphatic hydrocarbon put in a liquid state in the peripheral portion of the cylinder section at a relative distance of 0.7 to 1.0 from the center of the cylinder section as a start point and the concentration (C2) of the saturated aliphatic hydrocarbon put in a liquid state in the center portion of the cylinder section at a relative distance less than 0.7 from the center fulfills the following equation: C1>C2 at a place close to the upstream section of said gas distributing plate.
摘要:
Within bounds on both sides of an axial center of each of the raceways of an outer and inner ring, a curvature radius of a raceway portion in a dimensional range covering at least 45% of a raceway width with respect to the axial center thereof is defined to be within the range of between ±1 &mgr;m to/from a mean curvature radius of the raceway in the dimensional range.
摘要:
The improved dielectric ceramic composition has sufficiently high dielectric constant, high insulation resistance and small dielectric loss to be suitable for use as a material for ceramic capacitors. The composition comprises as a main component a three-component ceramic composition in solid solution having the formula Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 -Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 -PbTiO.sub.3 which, when expressed by xPb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 -yPb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 -zPbTiO.sub.3, is defined by the area surrounded by the following points of (x, y, z), i.e., (0.70, 0.20, 0.10), (0.70, 0.15, 0.15), (0.83, 0.02, 0.15), (0.96, 0.02, 0.02) and (0.78, 0.20, 0.02), and this ceramic composition further contains a Mn oxide or a Mn-containing complex oxide as an additive.
摘要:
A ferrofluid seal apparatus comprises magnetic fluid holding or positing means for storing or retaining a magnetic fluid in a sealing arrangement wherein inner and outer elements are relatively rotated. The magnetic fluid holding means includes an arrangement for retaining the magnetic fluid which flows out from its original position.
摘要:
An internal combustion engine of the spark ignition type developing a maximum output power at about 8000 rpm includes at least two ignition plugs for each cylinder and projections formed on the inner wall surface of a cylinder head for producing a squishy current. The engine also includes an ignition device including a delay circuit for delaying the ignition time in the high-speed rotation range, to thereby provide improvements in the output power and fuel consumption rate over the entire rotation range.
摘要:
A fault-tolerant system including a plurality of modules each further including a CPU subsystem, a fault-tolerant control unit, and an I/O subsystem, wherein the fault-tolerant control unit includes a master FT control LSI chip and at least one slave FT control LSI chip. One module is placed in an active state while the other module is placed in a standby state, so that I/O requests made by CPU subsystems of these modules are selectively delivered to I/O subsystems based on the master/slave relationship. Upon receiving fault information representing a failed subsystem which is either the CPU subsystem or the I/O subsystem found in the module, the master FT control LSI chip sends a command for controlling isolation of the failed subsystem to the slave FT control LSI chip, so that the slave FT control LSI chip controls isolation of the failed subsystem based on the command.
摘要:
A semiconductor light-emitting element comprises: a semiconductor substrate; a semiconductor laminated structure including a first conductivity-type semiconductor layer, an active layer, a second conductivity-type semiconductor layer, and a contact layer that are sequentially laminated on the semiconductor substrate; a ridge portion in an upper portion of the semiconductor laminated structure; a channel portion adjoining opposite sides of the ridge portion; a terrace portion adjoining opposite sides of the channel portion and, with the channel portion, sandwiching the ridge portion; a first insulating film covering the channel portion and having openings on the ridge portion and the terrace portion; a single-layer adhesive layer on the first insulating film; a Pd electrode on the ridge portion and a part of the single-layer adhesive layer and electrically connected to the contact layer of the ridge portion; and a second insulating layer covering a portion not covered by the Pd electrode of the single-layer adhesive layer, and the terrace portion.
摘要:
A method for manufacturing a semiconductor light emitting device includes forming an insulating film on a semiconductor substrate, the insulating film having an opening therein, forming a Pd electrode in the opening and on the insulating film, and removing the portion of the Pd electrode on the insulating film by the application of a physical force to the portion, while leaving the Pd electrode in the opening.