Mitsubishi Denki Kabushiki Kaisha

Nippon Telegraph and Telephone Corporation

Oki Electric Industry Co., Ltd.

Nichiban Company Limited

Riken Vinyl Industry Co., Ltd

Hitachi, Ltd.

Nippon Kayaku Kabushiki Kaisha

Taiho Pharmaceutical Company Limited

Nec Corporation

Asahi Glass Company, Limited

Hitachi Plant Technologies, Ltd.

Neturen Co., Ltd.

Mitsui Takeda Chemicals, Inc.

Fuji Chemicals Industrial Co., Ltd.

Toshio Ito

Miwa Sakata

Yasuhiro Suzuki

Shigeo Ueguri

Michihisa Tasaka

Hirotsugu Komura

Nobuyoshi Takahashi

Hiromasa Matsuoka

Hiromasa Sanada

Wataru Kobayashi

Yoshio Hirayama

Yukio Tanaka

Naoki Fujiwara

Hiroyuki Nakamura

Kenji Kobayashi

Kenji Kimura

Takeshi Ono

Yoichiro Tabata

Yoshiyuki Murata

Hiromi Kobayashi

Makoto Takaoka

Yukio Yokoyama

Hayato Fukuzono

Keita Kuriyama

Hiroshi Kawamura

Hideo Nishida

Masaaki Tanaka

Masafumi Yoshioka

Youichiro Tabata

Toshimasa Tomoda

Teruo Miyamoto

Satoshi Joko

Toshiyuki Yoneda

Haruhiko Nagai

Kenji Samejima

Masanori Kojima

Masahiro Hibino

Tsutomu Tatsuta

Hiroshi Ninomiya

Yoshio Yamashita

Noriyuki Yoshihara

Yasuhito Myoi

Kazuaki Matoba

Kenkoku Azuma

Fumio Suzuki

Katsuhisa Ootsuta

Takateru Asano

Naoki Kawamoto

Rieko Sato

Tamotsu Nomaguchi

Hiromi Oohashi

Takio Okuda

Akemi Futakawa

Yoshisuke Ohtsuru

Kenji Maeno

Atsuyoshi Nishi

Toyomi Ohshige

Kazuyuki Sugimura

Shoji Atsuta

Kiyotaka Hiradate

Katsuaki Magari

Fumio Tokumura

Hisao Koizumi

Miki Fukada

Kunihiro Ohyama

Kou Nishino

Hiroshi Yamada

Tetsuya Kohya

Mitsuo Toyama

Yasushi Shinkawa

Eiji Kobayashi

Hideo Kosaka

Shizuo Futaguchi

Akio Ishida

Toshihiko Makino

Tatsuo Saito

Satoru Kakoo

Hiroyuki Kamioka

Kunio Yamagami

Shuta Ueno

Toshiji Takami

Fusako Kawaguchi

Osamu Nakazaki

Yoshio Ebine

Yoshio Yamashima

Tsuneo Ishizu

Katsumi Kusumi

Takayoshi Numata

Tsugio Saito

Takayuki Akutsu

A radio communication system includes a transmitting station, and at least one receiving apparatus. The transmitting station includes a plurality of modulation units configured to modulate a plurality of input data to generate first data signals in units of blocks having a predetermined data length, a subtraction unit configured to calculate, by using information acquired in advance and indicating a communication path response between the transmitting station and the receiving apparatus, information indicating directivity upon transmission of the first data signals of each of the plurality of modulation units, and predetermined information included in an additional signal to be added to a data signal, a delay wave component of the additional signal and subtract the delay wave component calculated, from each of the first data signals of the plurality of modulation units, to generate a plurality of second data signals, a beam forming unit configured to adjust, by using the information indicating directivity, power and a phase upon transmission of each of the plurality of second data signals to generate a plurality of third data signals, a plurality of adding units configured to add the additional signal to each of the plurality of third data signals to generate a plurality of fourth data signals, and a plurality of communication units configured to transmit the plurality of fourth data signals to the receiving apparatus.

Radio communication system, communication method, and transmitting station device

The present invention provides an optical transmitter and a light intensity monitoring method that provide reliable APC feedback for a semiconductor laser equipped with an SOA. The optical transmitter includes an SOA integrated EA-DFB having a DFB laser, an EA modulator connected to the DFB laser, and an SOA connected to the EA modulator. In the structure of the optical transmitter, a light detector part is disposed forward of the output end side of an SOA part. The light detector part changes part of an output light beam from the SOA part into an electric current and detects light, while guiding the remaining part of the output light beam to a waveguide. With the light detector part disposed forward for the SOA part, it is possible to feed back the output result from the SOA part. Hence, good APC is possible.

Optical transmitter and light intensity monitoring method

In a centrifugal fluid machine, the secondary flow loss inside an impeller is reduced and the occurrence, when the flow rate decreases, of a flow separation/stall on the shroud-side suction surface near the leading edge of each impeller blade is suppressed, thereby making it possible to maintain the operating range of the impeller. For this, at the trailing edge of each impeller blade, the trailing edge of each impeller blade is inclined so that the shroud side of the impeller blade is positioned more backward in the rotation direction than the hub side thereof as the impeller is seen from the suction direction upstream of the rotary shaft of the impeller. Also, out of two adjacent impeller blades, the shroud side of one impeller blade trailing the other impeller blade in the impeller rotation direction overlaps with the other impeller blade at around the leading edge of the one impeller blade.

Centrifugal fluid machine

The present invention relates to a driving method for an SOA integrated EA-DFB laser monolithically-integrating a DFB laser portion, an EA modulator portion and an SOA portion, on a same substrate, wherein an electric current Iis injected into the SOA portion within a range of a power consumption not exceeding a total amount of a power consumption eliminated in the DFB laser portion of the SOA integrated EA-DFB laser and a power consumption eliminated in the EA modulator portion of the SOA integrated EA-DFB laser by eliminating an elimination amount &#x394;Ifrom a maximum injection electric current into a DFB laser portion of an EA-DFB laser allowable in a case of mounting the EA-DFB laser on an optical transmission module.

Electroabsorption modulator integrated distributed feedback laser with integrated semiconductor optical amplifier, and driving method for same

A main reinforcing bar has a strength transition portion between a normal strength portion and a high strength portion. The high strength portion is arranged in a joint section. The boundary between the normal strength portion and the strength transition portion is configured as a deigned point. The designed point is designed such that, at the time of an earthquake, the main reinforcing bar yields at the designed point before the main reinforcing bar yields at the root of the beam at of the joint section. The boundary between the high strength portion and the strength transition portion is located in the joint section, and the root of the beam is located at the strength transition portion. The strength of the strength transition portion at the root of the beam is equal to or higher than the required strength.

Reinforced concrete structure

An impeller includes a hub plate and a plurality of blades circumferentially disposed at intervals on one surface side of the hub plate. Each blade has a shape formed by piling up a plurality of blade sections in a blade height-wise direction of each blade in a reference impeller in which the hub plate intersects with the blades and which includes a linear element blade in the blade height-wise direction so as to form a curvilinear element blade. In piling up the blade sections, amounts of tangential lean and sweep to be applied to the blade sections are increased as it goes from an end face of at least one of a hub plate side end and a counter hub plate side end toward a span intermediate part of the blade.

Impeller and turbomachinery including the impeller

The present invention relates to a centrifugal compressor using a dry gas seal system for protecting seal means. A multistage centrifugal compressor has primary dry gas seal means for preventing leakage of working gas from a machine inner side, and secondary dry gas seal means for backing up the first dry gas seal means. A seal gas line for introducing the gas leaked from the first and second dry gas seal means to the outside of the machine is installed between the primary dry gas seal means and the secondary dry gas seal means. The gas seal line has an orifice and a check valve, and buffer means is installed between the orifice and the check valve.

Centrifugal compressor and dry gas seal system for use in it

The present invention provides a semiconductor memory device which comprises an interlayer insulating film formed on a semiconductor substrate, a contact plug formed in the interlayer insulating film and having one end electrically connected to the semiconductor substrate, a ferroelectric capacitor formed on the interlayer insulating film and comprising a first electrode, a ferroelectric film and a second electrode electrically connected to the other end of the contact plug, an insulating film which covers the ferroelectric capacitor and has an opening that exposes the first electrode, and a wiring film which covers the ferroelectric capacitor and the insulating film and is electrically connected to the first electrode exposed through the opening and which consists of a material having conductivity and even a hydrogen diffusion preventing function.

Semiconductor memory device including capacitor with conductive hydrogen diffusion prevention wiring film

A method of producing a ferroelectric capacitor includes the steps of: preparing a semiconductor substrate; forming a first insulating layer on the semiconductor substrate; laminating sequentially a metal layer, a first conductive layer, a ferroelectric layer, and a second conductive layer on the first insulating layer to form a capacitor forming laminated layer; forming an etching mask forming layer with strontium tantalate or strontium niobate; forming a silicon oxide layer on the etching mask forming layer for covering a ferroelectric capacitor forming area; forming an etching mask through wet etching of the etching mask forming layer with the silicon oxide layer; and forming a lamination formed of a barrier metal, a lower electrode, a ferroelectric layer, and an upper electrode through dry etching of the capacitor forming laminated layer with the etching mask.

Method of producing ferroelectric capacitor

A ferroelectric capacitor including a bottom electrode which has a projecting portion, a top electrode, a ferroelectric layer and a dielectric layer formed between the bottom electrode and the top electrode. The dielectric layer is formed on a peripheral area of the bottom electrode. The ferroelectric layer is formed on the dielectric layer and on the projecting portion of the bottom electrode. As a result, a damaged layer which is formed during an etching process occurs at the ineffective area of the ferroelectric capacitor.

Ferroelectric capacitor and semiconductor device having a ferroelectric capacitor

In an apparatus for displaying a flying object, an air flow is created in a duct by a group of blowers. A holding line is attached to a lightweight flying object, and movement of the lightweight flying object is restricted by the holding line. By making the lightweight flying object fly in the air flow, the lightweight flying object is able to fly even in a small space.

Apparatus for displaying a flying object

A polarization mode dispersion compensating device is formed by a polarization mode dispersion equalizer, a polarization component splitting unit for splitting a part of the polarization mode dispersion compensated optical signal into the TE polarization component and the TM polarization component, an optical XOR circuit for carrying out an optical XOR operation on the TE polarization component and the TM polarization component, and a control system for controlling the polarization mode dispersion equalizer such that the logical operation result outputted by the optical XOR circuit becomes &ldquo;0&rdquo;.

Polarization mode dispersion compensating device using optical XOR circuit

In an SOA characteristic evaluation method, the current is supplied to an SOA. An optical output generated by the SOA that have received the current is measured. Transmission light obtained by transmitting the optical output through a wavelength filter and/or a polarizer is measured. The characteristic of the SOA is evaluated on the basis of the measurement result of the optical output and the measurement result of the transmission light without using an optical input to the SOA. An SOA characteristic evaluation apparatus is also disclosed.

Semiconductor optical amplifier characteristic evaluation method and apparatus

A process for obtaining an aqueous fumaric acid solution which is useful in stably obtaining a large amount of aqueous fumaric acid solution. A column is packed with solid fumaric acid and then water is passed through the column, thereby giving an aqueous fumaric acid solution. Water is usually passed in the reverse direction. The solid fumaric acid may be in the form of tablets containing 70% by weight or more of fumaric acid. The aqueous fumaric acid solution thus obtained has a pH value of about 1 to 4. A urinal, etc. is treated with a fumaric acid-containing deodorizing agent to thereby efficiently deodorize nitrogen-containing bad-smelling components over a long period of time. A solid deodorizing agent containing fumaric acid, which has an extremely low solubility and a low dissolution rate in water, is placed on a urinal to deodorize the same.

Process for producing aqueous solution of fumaric acid

The invention provides a process for the preparation of a thermoplastic elastomeric resin composition comprising (a) 100 parts by weight of a block copolymer consisting of at least two polymeric blocks (A) composed of a vinyl aromatic compound and at least one polymeric block (B) composed of a conjugated diene compound, or a hydrogenated block copolymer, (b) 20 to 300 parts by weight of a non-aromatic softening agent for rubber, (c) 1 to 100 parts by weight of a peroxide-crosslinking type olefinic resin or a copolymeric rubber containing said resin, and (d) 10 to 150 parts by weight of a peroxide-decomposition type olefinic resin or a copolymer containing said resin, characterized in that the process comprises a step of heat-processing component (a), component (b), at least a part of component (c) and a part of component (d) in the presence of an organic peroxide to cause crosslinking, and a subsequent step of blending these with the remaining part of component (d) and, if any, the remaining part of component (c). The obtained composition is soft and good in rubber properties, mechanical strength and processability, and is less sticky.

Thermoplastic elastomeric resin composition and a process for the

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Tokyo, Japan

Toshio Ito