摘要:
Impurities can be removed from a polyphenylene sulfide resin with a high efficiency by heat-mixing a powdery phenylene sulfide resin with a solvent selected from (I) at least one solvent selected from dimethylsulfoxide, sulfolane, glycerol, ethylene glycol and diethylene glycol, (II) a mixed solvent of a solvent selected from dimethylsulfoxide, sulfolane, glycerol, ethylene glycol and diethylene glycol with an .alpha.-halogenated naphthalene or biphenyl, (III) a mixed solvent of the mixed solvent (II) or at least one solvent selected from benzyl alcohol, sulfolane and glycerol with N-methyl-2-pyrrolidone with water to bring the powder and the solvent sufficiently into contact with each other in the partially dissolved state, cooling and filtering the mixture, and washing the filter cake with a solvent incapable of dissolving the polyphenylene sulfide resin therein.
摘要:
Disclosed is a process for the preparation of polyphenylene-sulfide resins, wherein an aromatic polyhalide compound is reacted with an alkali metal sulfide, or hydrogen sulfide and an alkali metal base, or an alkali metal hydrosulfide and an alkali metal base in the presence of an amide polar solvent. A polyphenylene-sulfide resin having a cyclic oligomer content lower than 1.5% by weight, as determined according to the methylene chloride extraction method, is obtained by (a) carrying out the reaction in the absence a polymerization assistant, (b) using the amide polar solvent in an amount not larger than 400 g per mole of the aromatic polyhalide compound, and (c) subjecting the polymerization liquid obtained by the reaction to hot solid-liquid separation at a temperature at least 50.degree. C. but lower than the boiling point of the solvent used, and washing the separated solid with the solvent used for the reaction, which is heated at a temperature at least 50.degree. C. but lower than the boiling point of the solvent.
摘要:
A voltage-controlled oscillator includes a resonator section in which a plurality of types of variable capacitance elements having different structures and capacitance variation characteristics are connected in parallel and capacitance values of the plurality of types of variable capacitance elements are controlled simultaneously by a control voltage; and an amplifier section for maintaining oscillation produced by the resonator section. Varactor diodes and MOS varactors can be used as the variable capacitance elements.
摘要:
A sensitive membrane for an ion selective electrode selectively responsive to Na+ ion, the sensitive membrane having an ionophore,, an anion exclusion agent, a plasticizer and a membrane matrix, wherein the amount of the ionophore is from 85 wt % to 95 wt % based on the mixed amount of the ionophore and the anion exclusion agent.
摘要:
A radiation-proof sheath material includes a polymer material containing molecular chains of ethylene units as a main component in which side chain groups are randomly distributed and cross-linked, an antioxidant, a processing aid, and a flame retardant. The polymer material includes chlorinated polyethylene containing chloro groups in the side chain groups.
摘要:
According to one embodiment, a mixing cartridge mixes a first solution containing a sample with a second solution corresponding to a measurement item of the sample to be tested. The mixing cartridge includes a member, a first liquid supplying unit, a second liquid supplying unit, and a separating unit. A channel is formed in the member. A solution containing at least one of the first solution and the second solution passes through the channel. The first liquid supplying unit supplies the first solution to the channel. The second liquid supplying unit supplies the second solution to the channel. The separating unit communicates with the channel and separates a portion of the solution from the solution passing through the channel by capillary action.
摘要:
A liquid crystal display device which can prevent the generation of bubbles on an adhesive surface between a liquid crystal display panel and a face plate which protects the liquid crystal display panel is provided. In mounting the face plate on an upper polarizer of the liquid crystal display panel by way of an adhesive material, a picture frame is formed on a periphery of the face plate for enhancing design property. Although the picture frame is formed by printing black ink, a quantity of Si present in the black ink is set to not more than 0.7% and not less than 0.01% thus preventing the generation of bubbles attributed to defective adhesion between the face plate and the adhesive material.
摘要:
A pattern matching section compares reference taps supplied by one area extracting section with a reference tap component of a training pair pre-stored in a training-pair storing section, selects a training pair including a reference tap component having highest similarity to the reference taps, and supplies the selected training pair to a normal-equation generating section. Training pairs stored in the training-pair storing section include a SD signal and HD signal. A prediction-coefficient determining section obtains prediction coefficients by solving normal equations generated by the normal-equation generating section. A prediction calculating section produces a HD signal by applying the prediction coefficients to prediction taps extracted by another area extracting section.
摘要:
A photosensor system includes a photosensor array constituted by two dimensionally arraying a plurality of photosensors, an image reading section which reads a subject image at a predetermined image reading sensitivity by using the photosensor array, a sensitivity adjustment image reading section which reads a sensitivity adjustment subject image while the image reading sensitivity in the photosensor array is changed to a plurality of stages, an optimal image reading sensitivity deriving section which derives an image reading sensitivity optimal for reading operation of the subject image, on the basis of a pixel data group relating to an image pattern of the subject image read by the sensitivity adjustment image reading section, and an image reading sensitivity setting section which sets the optimal image reading sensitivity as the image reading sensitivity in the image reading section.
摘要:
An image processing apparatus includes a converter converting an interlace image including a first number of pixels into a first progressive image, an interpolator interpolating the first progressive image to generate a second progressive image including a second number of pixels, a classification unit classifying, in accordance with a feature of the second progressive image, into classes, subject pixels forming a third progressive image, which serves as a target image, including the second number of pixels and having a quality higher than the second progressive image, a storage unit storing a prediction coefficient for each of the classes obtained by conducting learning using a plurality of progressive images, each including the second number of pixels, and a computation unit performing computation using the second progressive image and the prediction coefficient for each of the classes to determine the third progressive image from the second progressive image.