摘要:
A method for prevention of loss of transparency of shaped articles prepared from a polyarylene ester blend comprising a polyarylene ester and other thermoplastic resin when treated with steam or boiling water, which comprises reducing the sodium content of the blend to less than 70 ppm.
摘要:
An object of the present invention is to provide a method for vapor phase catalytic oxidation which is almost free of variations in reaction states in respective reaction tubes of the fixed bed multi-tube heat-exchanger type reactor.Provided is a method for vapor phase catalytic oxidation for obtaining a reaction product gas by using a fixed bed multi-tube heat-exchanger type reactor provided with a plurality of reaction tubes and by feeding a raw material gas inside the reaction tubes packed with a catalyst, wherein the method comprises:adjusting pressure losses of the respective reaction tubes so that the pressure losses of the respective reaction tubes after catalyst packing is within ±20% of an average pressure loss of the reaction tubes by: packing an inert substance at a raw material gas inlet portion of the reaction tubes or removing and re-packing the catalyst packed, for a reaction tube having a pressure loss lower than the average pressure loss of the reaction tubes; and removing and re-packing the catalyst packed, for a reaction tube having a pressure loss higher than the average pressure loss of the reaction tubes.
摘要:
An aromatic polysulfone resin composition comprising 20 to 80% by weight of an aromatic polysulfone, 10 to 70% by weight of wallastonite and 0.5 to 20% by weight of a fluororesin. The aromatic polysulfone resin composition is superior in heat resistance, strength, stiffness, flame resistance, processability, etc. as engineering plastics.
摘要:
An encryption/decryption method comprises by using a generalized Feistel structure in which data is divided into n pieces and mixing processing with key data is performed, diffusion processing, in which data transformation via linear operation is executed, is performed at least once between rounds of the generalized Feistel structure, wherein. As the diffusion processing, linear transformation is performed in which each of n pieces of output data is operated on by two or more pieces of input data. The method is adapted for encryption or decryption.
摘要:
An encryption/decryption method comprises by using a generalized Feistel structure in which data is divided into n pieces and mixing processing with key data is performed, diffusion processing, in which data transformation via linear operation is executed, is performed at least once between rounds of the generalized Feistel structure, wherein. As the diffusion processing, linear transformation is performed in which each of n pieces of output data is operated on by two or more pieces of input data. The method is adapted for encryption or decryption.
摘要:
An object of the present invention is to provide a method for vapor phase catalytic oxidation which is almost free of variations in reaction states in respective reaction tubes of the fixed bed multi-tube heat-exchanger type reactor.Provided is a method for vapor phase catalytic oxidation for obtaining a reaction product gas by using a fixed bed multi-tube heat-exchanger type reactor provided with a plurality of reaction tubes and by feeding a raw material gas inside the reaction tubes packed with a catalyst, wherein the method comprises: adjusting pressure losses of the respective reaction tubes so that the pressure losses of the respective reaction tubes after catalyst packing is within ±20% of an average pressure loss of the reaction tubes by: packing an inert substance at a raw material gas inlet portion of the reaction tubes or removing and re-packing the catalyst packed, for a reaction tube having a pressure loss lower than the average pressure loss of the reaction tubes; and removing and re-packing the catalyst packed, for a reaction tube having a pressure loss higher than the average pressure loss of the reaction tubes.
摘要:
A resin composition is described, comprising from 60 to 97% by weight of a heat-fusible wholly aromatic copolyester represented by the general formula: ##STR1## (wherein d, e, and f are not equal to O and e/f is from 0.90 to 1.10, and n is 0 or 1) and from 3 to 40% by weight of a polyarylate.
摘要:
A pseudorandom number generation apparatus used for a stream cipher comprises at least one internal state, a non-linear conversion means that updates numeric data saved in the internal state, and a transposition means that performs only bit transposition for the numeric data, updated by the non-linear conversion means, based on a predefined rule.
摘要:
The invention provides a water supplying apparatus and method thereof which has a high capacity of peeling and removing a disused material such as a resist film and the like, and can efficiently use water vapor. A water supplying apparatus for executing a washing process, a cleaning process and a working process of a subject, is provided with a water vapor body supplying means for supplying a water vapor body, and a water mist body supplying means for supplying a water mist body containing liquid water fine particles, and the structure is made such that said water vapor body and said water mist body are supplied to the subject by independently controlling said two means.
摘要:
Disclosed are an organic acid salt of melamine represented by the following general formula (1) and a thermosetting and a photocurable and thermosetting coating compositions containing the salt mentioned above. ##STR1## wherein Z represents ##STR2## wherein R.sup.1 represents a hydrogen atom or an alkyl group, alkylene group, alicyclic hydrocarbon, or aromatic hydrocarbon severally having from 1 to 18 carbon atoms, or any of said groups or hydrocarbons whose hydrogen atom is substituted by carboxyl group, hydroxyl group, or a halogen atom, R.sup.2 represents a hydrogen atom or an alkyl group or alkylene group severally having from 1 to 9 carbon atoms, or any of said groups whose hydrogen atom is substituted by acryloyl group or methacryloyl group, R.sup.3 represents an alkyl group or alkylene group severally having from 1 to 9 carbon atoms, or any of said groups whose hydrogen atom is substituted by acryloyl group or methacryloyl group, and R.sup.4 represents an alkyl group or aromatic hydrocarbon severally having from 1 to 18 carbon atoms, or any of said group or hydrocarbon whose hydrogen atom is substituted by acryloyl group or methacryloyl group.