摘要:
A first adjustment circuit adjusts an impedance of a first antenna, and a second adjustment circuit adjusts an impedance of a second antenna. A coupling reduction circuit reduces an amount of coupling of the first and second antennas. A first reception power measurement unit measures first reception power received from the first antenna, and a second reception power measurement unit measures second reception power received from the second antenna. A selection unit selects a circuit from among the first adjustment circuit, the second adjustment circuit, and the coupling reduction circuit. A circuit control unit controls the impedance of the selected circuit so that the value of the evaluation function proportional to the product of the first reception power and the second reception power becomes larger.
摘要:
Acetic acid is produced while efficiently inhibiting condensation of hydrogen iodide in a distillation column (second distillation column) for purifying crude acetic acid by further distillation.A process for producing acetic acid comprises an acetic acid collection step for feeding a first distillation column with a volatile component at least containing acetic acid, methyl acetate, methyl iodide, water, and hydrogen iodide, separating a first lower boiling point component as an overhead, and collecting a first liquid stream mainly containing acetic acid, and an acetic acid purification step for feeding a second distillation column with the first liquid stream, further separating a second lower boiling point component as an overhead, and collecting a second liquid stream containing acetic acid, wherein an alkali component is added or mixed to the first liquid stream in the manners (1) and/or (2) for distilling a liquid object to be treated containing the first liquid stream and the alkali component in the second column: (1) the alkali component is added to or mixed with the first liquid stream before the first liquid stream is fed to the second column, (2) in the second column, the alkali component is added or mixed at the same height level as or at a height level upper than a height level at which the first liquid stream is fed.
摘要:
A production process of acetic acid comprises a reaction step for continuously allowing at least one member selected from the group consisting of methanol, dimethyl ether, and methyl acetate to react with carbon monoxide in a catalyst system comprising a rhodium catalyst, an iodide salt, and methyl iodide in the presence of acetic acid and water in a plant compromising a reactor 1; a flasher 2; and a distillation column 3; wherein part of the vaporized stream is introduced into a heat exchanger 7. The process achieves a production of acetic acid with a high purity in a resource-saving and energy-saving equipment by efficiently removing a reaction heat even in a large-sized plant.
摘要:
A communication system that performs encoding and decoding for communication includes a transmitting apparatus and a receiving apparatus. The transmitting apparatus includes a turbo encoding unit including a first encoding unit that encodes an input signal and generates a first parity bit by bit-based encoding and n (n=1, 2, 3, . . . ) second encoding units that encode the input signal and generate second parity bits by bit-based encoding, and a symbol mapping unit that maps an output from the turbo encoding unit to a symbol by bit-based mapping operation and modulates the output. And the receiving apparatus includes a demodulating unit that demodulates a transmission signal, and a turbo decoding unit that performs turbo decoding on the demodulated signal by bit-based decoding.
摘要:
In an antenna positioning method for a communication device that performs communication using a plurality of antennas positioned on a straight line, the method has a first step of measuring radiation pattern characteristics of each antenna, a second step of detecting a direction in which fluctuation of the radiation pattern characteristics of each antenna is large, and a third step of positioning each antenna in the communication device so that the direction in which the characteristic fluctuation is large matches the straight line direction.
摘要:
A suspension coil spring, when assembled to a suspension device, in which a spring reaction axis is positioned coincident with or sufficiently close to a load input axis, and the design and manufacture of coil springs are facilitated. Namely, A suspension coil spring (19) in a free state is formed so that a coil axis (AC) is bent in V-shape at bend point (PB) and the distance from the end turn center (CU) of the upper seating surface (38) to an imaginary coil axis (AI) is an upper inclination amount (VU), and the distance from the end turn center (CL) to the imaginary coil axis (AI) is a lower inclination amount (VL). When the suspension coil spring (10) is interposed between spring seats (22, 24) in the suspension device and compress along a strut axis, the spring reaction axis of the suspension coil spring (10) is inclined and offset with respect to the imaginary coil axis (AI) according to the inclination amounts (VU, VL).
摘要:
A thermal transfer type printer comprising a sun gear 10 connected (indirectly) with a motor 1, exchanging arms 11, 14 having a pin 13,16 respectively, planet gears 12,15, an exchanging gear having bosses 18,19 and engaging with the planet gear 12, a cam 20, a link mechanism 33, and gears 24-32 which engage with the planet gear 15 when the planet gear 15 comes to a predetermined angle position so as to drive a printing paper feeding mechanism 43,44 and to drive an ink ribbon feeding mechanism 45,46. The procedures of the pressing and separation of the thermal printing head, the feeding of the ink ribbon, and the feeding of the paper, can be carried out using only one motor, though not only web type paper but also sheet type paper are usable.
摘要:
A method and the related system for sampling solid materials. Materials as continuously manufactured from a compression molding machine are sampled at fixed intervals and the materials thus sampled are fed into a transport pipe so as to be transferred by being accompanied by a transport plug into an inspecting station at low speed from its stand-by position in the pipe when a gas control means is set in a feed mode. After transferring sampled materials the transport plug left at its terminal position in the transport pipe is automatically returned to the stand-by position through the transport pipe when the gas control means is set in a suction mode. By executing the above steps repeatedly, sampled materials are successively transferred into the inspecting station by being accompanied by the transport plug under unmanned operation.
摘要:
A solid-state imaging apparatus includes: an imaging section having a light-receiving portion for receiving light from an object to image the object; and a substrate on which the imaging section is disposed, wherein a predetermined member provided on the substrate in the neighborhood of the light receiving portion is partially or entirely coated in black.
摘要:
Acetic acid is produced while inhibiting an increased concentration or production of hydrogen iodide in a carbonylation reactor or corrosion of the carbonylation reactor.A production process of acetic acid comprises a reaction step for continuously allowing methanol to react with carbon monoxide in the presence of a catalyst system comprising a metal catalyst (e.g., a rhodium catalyst), an ionic iodide (e.g., lithium iodide), and methyl iodide in a carbonylation reactor; and in the process, (i) the concentration of the metal catalyst is maintained at not less than 860 ppm on the basis of weight, the concentration of water is maintained at 0.8 to 15% by weight, the concentration of methyl iodide is maintained at not more than 13.9% by weight, and the concentration of methyl acetate is maintained at not less than 0.1% by weight, in a whole liquid phase in the reactor, and/or (ii) the concentration of the metal catalyst is maintained at not less than 660 ppm on the basis of weight, the concentration of water is maintained at 0.8 to 3.9% by weight, the concentration of the ionic iodide is maintained at not more than 13% by weight, the concentration of methyl iodide is maintained at not more than 13.9% by weight, and the concentration of methyl acetate is maintained at not less than 0.1% by weight, in a whole liquid phase in the reactor.