Canon Kabushiki Kaisha

Ohi Seisakusho Co., Ltd.

Mitsubishi Heavy Industries Limited

Other

Kabushiki Kaisha Toshiba

Nissan Motor Company Limited

Ricoh Company, Ltd.

Ishikawajima-harima Heavy Industries Co., Ltd.

Canon Precision Inc.

Power Systems Co., Ltd.

Toshiba Corporation

Japan Gore-tex Inc.

Kokoku Intech Co., Ltd.

Mitsubishi Jukogyo Kaisha

Hitoshi Nakamura

Hiroyuki Inoue

Takashi Nojima

Akira Kida

Hideki Yamaguchi

Hideaki Kawakami

Soichi Hiramatsu

Takeshi Iwasaki

Akira Miyakawa

Takehiko Kiyohara

Yoshiaki Obayashi

Katsumi Nochi

Masanao Yonemura

Tetsuya Ishikawa

Kenji Kawazoe

Koji Mizuguchi

Yasuo Kotaki

Toshihiko Ujita

Sadayuki Sugama

Keiichiro Tsukuda

Akihiro Yamanaka

Atsushi Noda

Reiko Fujita

Toshio Koyanagi

Tatsuyuki Takaishi

Haruo Mochida

Yujiro Kaneko

Norihisa Kobayashi

Chihiro Nagura

Michio Okamura

Yoshio Watanuki

Tsutomu Kawai

Osamu Naito

Noriko Kawasaki

Shohei Kanamura

Kazuhiro Utsunomiya

Kouki Fuse

Haruyuki Yanagi

Tetsuo Suzuki

Akira Yamada

Katsuyuki Yokoi

Seiji Takahashi

Masahiro Kobayashi

Kozo Iida

Wasaburo Ohta

Itaru Fujimura

Ryoji Shimura

Akinori Yasutake

Isao Mochida

Fumio Kobayashi

Atsushi Morii

Toshihiko Setoguchi

Isao Miyamoto

Kotaro Kobayashi

Kouzo Iida

Toshiyuki Ogawa

Masaaki Yoshikawa

Etsuo Ogami

Masaaki Yuge

Masaki Yoshio

Hisashi Morioka

Masashi Nakazawa

Shunji Nomura

Nachio Seko

Nobuhiko Tanaka

Takahiro Kasuh

Masakazu Akahori

Masazumi Miyagawa

Toshiyuki Onishi

Yuya Takahashi

Shuji Furuya

Shoji Kuroishi

Takashi Oomori

Yasuaki Hori

Takashi Omori

Michiaki Shinozuka

Shinji Tanaka

Masamitsu Murakami

Kousuke Kudo

Masaaki Ishiyama

Shunichi Minagawa

Hiroaki Kuzuoka

Toshihiko Yoshio

Yuuzi Onodera

Isamu Yuito

Yoshihiro Shiroishi

Kazuo Shiiki

Kiminari Shinagawa

Yasutaro Uesaka

Hideo Fujiwara

Masao Iwata

Akitake Matsushita

Mitsuru Kawamoto

Masaru Ito

Heiichiro Tsukuda

An encoder includes a scale, a detector, and a processor. The processor executes a second process while executing a first process, calculates a first relative position of one of the scale and the detector to the other of the scale and the detector when a calculation of a relative position between them starts, and then calculates a second relative position of the one to the other based on a relative displacement amount between them and the first relative position.

Encoder and apparatus having the same

A spent nuclear fuel is reprocessed by dissolving a spent nuclear fuel in an aqueous nitric acid solution and separating and recovering nuclides contained in the resulting fuel solution by solvent extraction. A spent nuclear fuel reprocessing method includes: an electrolytic valence adjustment step in which nuclides contained in the fuel solution is electrolytically reduced without removing fission products or minor actinides until valence of plutonium is at a level at which solvent extraction efficiency is low by using the valence of plutonium contained in the fuel solution as a parameter; and a nuclide separation step in which, by using an extraction solvent which extracts uranium contained in the fuel solution, uranium is distributed from the fuel solution subjected to the electrolytic valence adjustment step to the extraction solvent.

Method for reprocessing spent nuclear fuel and centrifugal extractor therefor

The encoder includes a scale provided with multiple periodic patterns having mutually different periods, a sensor outputting, with a relative movement between the scale and the sensor, multiple periodic signals periodically changing respectively corresponding to the periods of the periodic patterns, and a signal processor calculating a detected movement amount as a detected relative movement amount between the scale and the sensor. The signal processor calculates, by using each of the periodic signals, an accumulated movement amount which is an accumulated value of the relative movement amount between the scale and the sensor in units of one over an integer of the period of the periodic pattern corresponding to the periodic signal used, unifies the units of the accumulated movement amounts calculated by using the respective periodic signals, and calculates the detected movement amount from the accumulated movement amounts with the unified units.

Encoder, apparatus including the encoder, encoder calculation method and storage medium storing encoder calculation program

An object of the present invention is to provide a catalyst for treating exhaust gas adapted not only to remove CO and VOCs based on unsaturated hydrocarbons such as CHbut also to accelerate a decomposition reaction of saturated hydrocarbons such as propane and to provide a method for producing such a catalyst for treating exhaust gas. The present invention provides a catalyst for treating an exhaust gas containing carbon monoxide and volatile organic compounds, the catalyst comprising a substrate containing a NOx removal catalyst component and a porous inorganic compound layer containing a noble metal, the layer being applied to the substrate.

Catalyst for treating exhaust gas and method for producing the same

According to one embodiment, a method of separating and recovering metals whereby a mixture containing at least a first metal and a second metal, the second metal having a higher standard electrode potential than that of the first metal, is connected to an anode in a molten salt, and the first metal and the second metal are precipitated on a cathode in the molten salt by electrolysis, the method of separating and recovering metals comprising: a detection step of detecting a concentration change in each of a first metal ion and a second metal ion in the molten salt by a concentration change detection unit; a first electrolysis step of electrolyzing the first metal; a first recovery step of recovering a precipitated substance according to a detection in which a concentration decrease of the first metal ion, which is predefined in the concentration change detection unit, is detected in the detection step; a second electrolysis step of electrolyzing the second metal; and a second recovery step of recovering a precipitated substance subsequent to the first recovery step.

Method of separating and recovering metals and system for separating and recovering metals

An object of the present invention is to provide a method of producing metal zirconium, the method having a fewer steps and a smaller amount of secondary wastes generated, wherein the metal zirconium is obtained from a zirconium compound containing hafnium. A method of producing metal zirconium according to the present invention includes: a separation step of separating a hafnium oxychloride from a first substance containing a zirconium oxychloride and a hafnium oxychloride to obtain a second substance having a higher content of the zirconium oxychloride; a calcination step of calcining the second substance to obtain a third substance containing at least any of a zirconium oxychloride and a zirconium oxide; and a direct reduction step of holding the third substance in a molten salt with the third substance brought into contact with a cathode and applying a voltage between the cathode and an anode to directly reduce the third substance to obtain metal zirconium.

Method for manufacturing zirconium metal and hafnium metal

The encoder includes a scale provided with a periodic pattern, a sensor relatively movable with respect to the scale and reading the periodic pattern to output analog signals each having a changing period corresponding to the periodic pattern and having mutually different phases, an A/D converter performing time-division analog-to-digital conversion on the analog signals output from the sensor to produce digital signals, and a phase detector detecting a phase from the digital signals. The encoder further includes a corrector calculating a correction value by using a relative movement speed of the scale and the sensor and the detected phase detected by the phase detector, and calculating a corrected phase from the correction value and the detected phase, and a position detector calculating a position in a direction in which the scale and the sensor are relativity moved by using the corrected phase.

Encoder and apparatus with the same

The optical encoder includes a scale provided with a periodic pattern in which an optical portion is periodically formed with a first period in a first direction, and a light receiver movable relatively with the scale in the first direction and photoelectrically converts a detection light from a light source and then passing through the optical portions. The optical portion periodically has a pattern, which is formed by pattern portions mutually adjacent in a second direction orthogonal to the first direction and mutually shifted in the first direction, in the second direction with a second period of t. A width w of the light source in the second direction satisfies w=(a+b)/b&#xb7;nt where n represents a natural number, and a:b represents a ratio of a distance from the light source to the periodic pattern and a distance from the periodic pattern to the light receiver.

Optical encoder and apparatus including the same

The encoder includes a scale having a first periodic pattern and a second periodic pattern, a sensor relatively movable with the scale. The sensor outputs in a first detection state a first periodic signal changing with a change period corresponding to the first periodic pattern and outputs in a second detection state a second periodic signal changing with a longer change period corresponding to the second periodic pattern than that of the first periodic signal. A processor calculates a position in a relative movement direction of the scale and sensor by using both the first and second periodic signals. The processor takes in the second periodic signal, the first periodic signal and the second periodic signal in this order at mutually different times, calculates phases of the second, first and second periodic signals at a specific time and calculates the position at the specific time by using the calculated phases.

Encoder and apparatus using the same

The encoder includes a scale provided with first and second tracks, a sensor relatively movable with the scale and reading periodic patterns to output periodic signals, and a processor calculating a position in a relative movement direction of the scale and sensor by using the periodic signals. The first track includes first and second periodic patterns whose periods are mutually different, and the second track includes a third periodic pattern whose period is different from that of the second pattern and is an integral multiple or an integral fraction of that of the first periodic pattern. The processor calculates, by using a phase difference between the periodic signals corresponding to the first and third periodic patterns, the position in which a sensor reading error due to a relative displacement between the first and second tracks and the sensor is corrected.

An encoder () includes a sensor () configured to illuminate light on a single scale () to detect two phase signals having periods different from each other, an error signal generator () configured to arrange accumulated amounts of phase changes of the two phase signals when the scale () and the sensor () are relatively displaced from each other by a predetermined displacement so as to obtain two accumulated phase signals and to obtain a difference between the two accumulated phase signals so as to generate an error signal that is obtained by removing an accumulated phase component corresponding to the predetermined displacement, and an interpolation error detector () configured to average the error signal by using at least one of periods of the two phase signals so as to detect an interpolation error contained in at least one of the two phase signals.

Encoder

The encoder includes a scale including first and second periodic patterns, and a detector relatively movable with respect to the scale and whose detection state is switchable between a first detection state to read the first periodic pattern and output a first signal and a second detection state to read the second periodic pattern and output a second signal. A processor performs a first process to detect a first absolute position by using the first and second signals and then performs a second process to calculate a relative movement amount by using a specific signal that is one of the first and second signals and detect a second absolute position by using the relative movement amount and the first absolute position. The specific signal is obtained from the detector set in a same detection state as that set last in the first process.

A catalyst for treating exhaust gases containing nitrogen monoxide, carbon monoxide and volatile organic compounds includes a plurality of layers, an upper layer of which has an active component contained uniformly therein and a lower layer of which has no active component contained therein. The catalyst is obtained through the steps of: forming the lower layer by coating the surface of substrate with a slurry of a porous inorganic compound, followed by drying; and forming the upper layer, which is to be the top surface of the catalyst, by coating the surface of the lower layer with a slurry of a porous inorganic compound that has the active component composed of one or more precious metals supported thereon, followed by drying. The oxidation power of the resulting catalyst is enhanced without increasing the amount of precious metal supported thereon.

Catalyst for treating exhaust gases, method for producing the same, and method for treating exhaust gases

A rotary encoder includes two first detection units disposed at positions that are symmetrical about a rotation axis, each of the first detection units outputting an incremental signal, and second detection unit that outputs an absolute signal &#x3c6;. The rotary encoder includes a storage unit that stores a plurality of formulas for correcting errors of the incremental signals, the formulas being different from each other in accordance with the signal &#x3c6;, and the errors being generated due to eccentricity; a calculation unit that calculates a corrected phase &#x3c6;by performing operation on the incremental signals by using one of the formulas corresponding to the signal &#x3c6;; and a generation unit that generates a rotation angle of the scale on the basis of the phase &#x3c6;and the signal &#x3c6;.

Rotary encoder and rotation mechanism including the same

It is intended to provide an exhaust gas treatment system, which allows for VOC removal at lower temperatures and thereby improves the durability of catalysts and suppresses carbon monoxide generation at the final outlet of the system. The present invention provides a treatment system of an exhaust gas containing a nitrogen oxide, carbon monoxide, and a volatile organic compound comprising: an exhaust gas treatment means for removing the nitrogen oxide by reduction with ammonia and partially oxidizing the VOC to CO; and a CO/VOC removal means for oxidizing the CO and partially unreacted VOC, in this order from the upstream flow of the exhaust gas.

Exhaust gas treatment system

Growing community of inventors

Kawasaki, Japan

Hitoshi Nakamura