摘要:
Provided is a water heater, which allows efficient deposition of a scale component dissolved in water so as to reduce adhesion of the scale to a heat-transfer channel. The water heater includes: scale deposition means including a tank, an anode and a cathode provided in the tank so as to be opposed to each other, and a first power supply for applying a voltage between the anode and the cathode, the scale deposition means depositing a scale component dissolved in water retained in the tank; a heat-transfer channel provided at downstream of the scale deposition means, for guiding the water; and a heat source for heating the water by heat exchange in the heat-transfer channel, in which the scale deposition means includes oxygen-gas supplying/dissolving means for supplying an oxygen gas to a water feed pipe for feeding the water to the tank and dissolving the oxygen gas in the water.
摘要:
A threading unit for threading a thread through holes of a sheet-like flat member, including an upper block (2) and a lower block (3) mating with each other and each having formed therein a discontinuous vessel having apertures open on the respective mating surfaces. The upper and lower blocks, when joined together, have their discontinuous vessels connected to each other to complete a continuous vessel through which a thread is threaded. The upper and lower blocks are each split into a first upper piece (2A) and a second upper piece (2B) and a first lower piece (3A) and a second lower piece (3B), respectively, along the parting face. Each split has on its parting face a lengthwise cut half of the discontinuous vessel. The sheet-like flat member is sandwiched between the mating faces of the upper and lower blocks (2) and (3) with its holes coinciding with the apertures of the upper and lower blocks.
摘要:
This invention provides a digital broadcasting receiving unit capable of achieving synchronization of time information between a base station and a receiving unit with reference clock without use of a crystal oscillator (VCXO) having a variable frequency. The crystal oscillator oscillates a clock of a predetermined fixed frequency. A variable digital dividing circuit divides a fixed frequency by a division ratio so as to change the division ratio. A system decoder detects reference time information from the base station. A reference counter generates time information of a receiving unit. A phase comparator detects a difference between reference time information and time information. A division ratio control circuit controls the change of the division ratio based on the difference. The reference counter generates time information based on a clock having a frequency obtained by dividing by the variable digital dividing circuit and feeds back time information to the phase comparator.
摘要:
Silicon raw material and gallium dopant are charged and mixed in a crucible. The silicon raw material is heated to a predetermined temperature, and melted under an inactive gas atmosphere. The melted silicon raw material is cooled down to be crystallized to make a polycrystalline silicon incorporating the gallium dopant.
摘要:
The present invention is relative to a system enabling a through operation between a mileage system and an electronic money system. The mileage system is such a system in which mile points as distance points corresponding to the flight distance of an aircraft are accumulated and exchanged for boarding tickets and other services. An IC card (230) having stored a wallet number in it is used. The wallet number and a mileage number are managed in a correlated fashion. Responsively to a request from a user, reference is made to an electronic money value ledger (222), matched to the wallet number, while reference is also made to a mile point ledger (122), matched to the mileage number. A preset number of the mile points are changed over to an electronic money value and, depending on changed-over results, the electronic money value ledger is subjected to integration processing, while the mile point ledger is subjected to deduction processing.
摘要:
A data transmission device transmits a data broadcast using a narrow unused broadcasting band in a digital broadcast, and to record the data broadcast, which has been received, on a receiving side so that the receiving side can play back the data broadcast after a data stream is totally recorded. The transmission device generates a first data stream, which is recorded on a recording medium on a receiving side, and a second data stream including audio and video data, which is transmitted as a broadcasting program. The transmission device multiplexes the first and the second data streams and then transmits the multiplexed data stream. The transmission of the multiplexed data stream is controlled so that a transmission rate for the multiplexed data stream does not exceed the maximum transmission rate, and so that a transmission rate for the first data stream becomes lower than that for the second data stream. A receiving device records the first data stream on the recording medium, and permits the first data stream to be played back for use after the transmission completes.
摘要:
A magnetic head having optimum recording/reproducing characteristics and a method for producing the magnetic head. A pair of magnetic core halves 2, 3, each having a substrate 4 and a thin magnetic metal film 6 formed obliquely on it, are bonded together via a non-magnetic material C for defining a magnetic gap. A portion of the substrate faces a junction surface 8 of the magnetic core halves 2, 3. The substrate portion is arranged for facing an end face of the magnetic meta film 6 of the opposite side magnetic core half facing the junction surface 8.
摘要:
A method for producing a magnetic head with reduced cross talk. A position of a projection for forming a magnetic gap on each of two magnetic core half bodies is adjusted by forming first and second position adjusting projections for having sidewall surfaces that are vertical relative to surfaces for forming track width adjusting grooves.
摘要:
A magnetic head capable of preventing erosion of the magnetic metal film despite the absence of a protective film and preventing a decrease in the playback output due to decrease of the track width while preventing cracking from being initiated and developed in the ferrite substrate is disclosed. The magnetic head is prepared by forming magnetic core half blocks and by bonding the core half blocks via gap bonding, each of the magnetic core half blocks being previously formed by stacking a ferrite substrate on another ferrite substrate having magnetic metal films via glass films and forming track width adjustment grooves. The glass transition temperature Tg of the glass employed for stacking the ferrite substrates is set so as to be higher than the glass yield point Tc of the fusion glass.
摘要:
In a photoresist pattern formation by exposure using first and second photomasks, the first photomask has a transparent part, a rectangular opaque part having a first pair of sides and a second pair of sides, and a phase shifter, having a first edge crossing one of the first pair of sides, so that a part of the first edge is in the transparent part, and the second photomask has a transparent part, a rectangular opaque part corresponding to the rectangular opaque part of the first photomask, and a stripe-shaped opaque part corresponding to the first part of the first edge of the phase shifter. The rectangular opaque part of the first photomask is expanded in the direction of the first pair of sides, while the rectangular opaque part of the second photomask is expanded in the direction the second pair of sides. The amount of expansion is preferably not smaller than a misalignment tolerance.