Fuji Xerox Co., Ltd.

Kabushiki Kaisha Toshiba

Other

Nec Corporation

Japan Atomic Energy Research Institute

Sony Corporation

Toshiba Energy Systems & Solutions Corporation

Natsumra Oil Research Corporation

Kazuyuki Nakamura

Kiyokazu Mashimo

Fumio Ojima

Taketoshi Hoshizaki

Takanori Nakamura

Masahiko Hozumi

Hirofumi Nakamura

Toru Ishii

Yoshio Murakami

Yasuyuki Enomoto

Kenjiro Obara

Kotaro Tezuka

Kaori Iemura

Masato Akiba

Takehiko Hayashi

Akira Ichida

Takuya Tomioka

Katsumi Nukada

Takahiro Suzuki

Koichi Kubo

Hiroshi Murakami

Toshiaki Suzuki

Kenji Sekiguchi

Yutaka Akasaki

Tomoo Kobayashi

Satoya Sugiura

Hidemi Nukada

Fuyuki Kano

Tomozumi Uesaka

Daisuke Haruyama

Masayuki Nishikawa

Kazuhiro Koseki

Ichiro Takegawa

Sadao Suzuki

Shigeto Hashiba

Isao Kojima

Kenta Ide

Toshio Yamashita

Sadao Kurosawa

Toshifumi Kurokawa

Keita Saito

Takaaki Kimura

Hajime Koyama

Yoshimasa Tsuchiya

Taizo Inagaki

Tetsuya Ezumi

Satoru Kuboya

Naritoshi Nakagawa

Akira Shinohara

Kiyoshi Nakamura

Toshimasa Mukai

Yasuyoshi Shimazaki

Pohan Ko

Takao Soda

Masamitsu Naganuma

Norio Ohtake

Sakito Anpuku

Nobuaki Miura

Fumio Fujita

Yoichiro Takeuchi

Takahiro Nakashima

Katsuhiko Nishimura

Hidetaka Nakae

Koichiro Shimizu

Yasushi Nogawa

Toshihiro Kanie

Tamio Adaka

Takao Uchida

Kazunori Kitamura

According to the embodiment of the present invention, a guide vane of a water turbine rotatable about an axis, including a guide vane for directing supplied flowing water toward the downstream side. The guide vane has a downstream end edge having an upper end portion and a lower end portion. The lower end portion of the downstream end edge is displaced in the direction orthogonal to an axis with respect to the upper end portion of the downstream end edge when viewed from the downstream side.

Guide vane apparatus for water turbine and water turbine equipped with the same

A hydraulic turbine according to an embodiment includes a turbine body, a running water surface provided in the turbine body, the running water surface defining a channel for water, and a coating layer provided on the running water surface, the coating layer being formed by water-repellent paint or hydrophilic paint.

Hydraulic turbine and pipe

An axial flow water turbine according to an embodiment includes a discharge ring and a runner vane. When seen in the runner meridional cross section, a straight line that passes a border between a cylindrical surface and a spherical surface of the discharge ring and that is perpendicular to a water turbine rotation axis is denoted as A. A crossing point between the straight line A and the water turbine rotation axis is denoted as B. A straight line inclined by an angle &#x3b8; of 10 degrees or less is denoted as C. A cross point between the straight line C and the external peripheral end surface of the runner vane is denoted as D. In this case, the external peripheral end of the forward edge of the runner vane is located on the crossing point D.

Axial flow water turbine

A hydraulic machine having a hydro turbine runner which has a crown at a center and a band along an outer periphery, and is formed around the axis of rotation, long blades which are arranged along the circumferential direction of the axis of rotation, and whose center-side ends are supported by the crown, and periphery-side ends are supported by the band, and short blades which are arranged between the long blades, and whose center-side ends are supported by the crown, periphery-side ends are supported by the band, and rear edges are curved in a rotation direction of the hydro turbine runner in turbine operation, on a plane of projection perpendicular to the axis of rotation.

Hydraulic machine

An electrophotographic photoreceptor, includes: a conductive support; and a photosensitive layer provided on or above the conductive support, the photosensitive layer including an outermost surface layer at the farthest location from the conductive support, wherein the outermost surface layer contains: coated insulating inorganic particles obtained by subjecting insulating inorganic particles having a specific surface area of not more than about 300 m/g to a coating treatment with an aromatic functional group-containing compound; and fluorine-containing organic particles.

Electrophotographic photoreceptor, process cartridge and image forming apparatus

An electrophotographic photoreceptor comprises: an electroconductive support; and a photosensitive layer on the electroconductive support, wherein the photosensitive layer having a dynamic hardness of from 20&#xd7;10to 150&#xd7;10N/mand an elastic deformation ratio of from 15 to 80%.

Electrophotographic photoreceptor, process cartridge, and image forming apparatus

An electrophotographic photoreceptor includes a conductive support; a photosensitive layer; and a surface protective layer as an outermost layer of the electrophotographic photoreceptor, wherein the electrophotographic photoreceptor satisfies following formulas (a) and (b):3.6&#x2266;()/&#xd7;100&#x2266;6&#x2003;&#x2003;(a)B&#x2266;0.3&#x2003;&#x2003;(b) wherein A (&#x3bc;m) represents a ten-point-averaged surface roughness Rof the conductive support, B (&#x3bc;m) represents a ten-point-averaged surface roughness Rof the surface protective layer, and C (%) represents a reflectivity of the surface protective layer against the conductive support.

A camber line in a radial section of a runner vane has a curved part extending near the tip of the runner vane is convex toward the front surface of the runner vane. The runner vane is formed in a shape meeting a condition expressed by: &#x3c1;s&#x3c;&#x3c1;p, where &#x3c1;s is the radius of curvature of the back surface of the runner vane and &#x3c1;p is the radius of curvature of the front surface of the runner vane. The runner vane of this shape suppresses flows toward the tip thereof to moderate the variation of flow velocity in the turning direction. Consequently, loss can be reduced without impeding the recover of pressure in a draft tube.

Runner vane for axial-flow hydraulic machinery

A Francis pump-turbine includes a runner provided with runner blades arranged around in a circumferential direction of a main shaft of the runner, each of the runner blades being supported by a band at a bottom side thereof in a blade height direction and supported by a crown at a head side in the blade height direction, in which the runner blade is formed, at a trailing edge thereof, with a curved portion expanding to the main shaft when the turbine is in operation, the curved portion has a maximum point with respect to a straight line connecting a crown-side trailing edge connecting end at which the trailing edge and the crown are connected and a band-side trailing edge connecting end at which the trailing edge and the band are connected, and an angle &#x3b1; formed by a straight line connecting the maximum point and the crown-side trailing edge connecting end and a straight line connecting the maximum point and the band-side trailing edge connecting end is set to be within a range of &#x3b1;&#x2266;150&#xb0;.

Francis pump-turbine

A stay ring of a hydraulic turbine has: a ring-shaped upper wall, a ring-shaped lower wall arranged below the upper wall forming a ring-shaped flow channel between the upper wall and the lower wall; and stay vanes arranged in array with spaces in a peripheral direction in the ring-shaped flow channel and rigidly secured to the upper and lower walls. The upper wall and the lower wall are inclined so as to reduce height of the ring-shaped flow channel toward outlet at least near inlet end thereof. The straightening bodies are arranged along inner surfaces of the upper wall and the lower wall at least near inlet end to reduce inclination of water flow in the stay ring.

Hydraulic turbine and stay ring

The present invention is provided for considerably shortening the construction time of a building that is applied to nuclear power plants. When constructing the building, megablocks having a height that extends to a plurality of floors are produced, and together with combining those megablocks, concrete is poured inside them to form a wall member composed of a megawall structure of steel plate reinforced concrete construction. Alternatively, in addition to the wall megablocks, floor megablocks for forming the floor member of the building are used, and together with combining those megablocks, concrete is poured inside or above them to form a structural member (wall member and floor member) composed of a megawall structure of steel plate reinforced concrete construction.

Building and construction method therefor

In a plasma facing member exposed to a plasma beam of nuclear fusion reactors or the like, such as an electron beam, a tungsten layer is formed by the use of a CVD method and has a thickness of 500 micron meters or more. The tungsten layer may be overlaid on a substrate of molybdenum or tungsten and comprises included gases reduced to 2 ppm or less and impurities reduced to 2 ppm or less. The tungsten layer is specified by either a fine equi-axed grain structure or a columnar grain structure. Alternatively, the material of the substrate may be, for example, Cu alloy, stainless steel, Nb alloy, or V alloy.

Plasma facing components of nuclear fusion reactors employing tungsten materials

A helical gear tooth broach having an elongate body having a series of axially aligned and spaced teeth disposed thereon. The direction of tooth spaces or traces of the teeth in a longitudinally extending helical alignment and the direction of the gullets of the teeth in a side by side circumferentially extending helical arrangement are both oriented at a right-upward or a left-upward helix angle in common with each other.

Helical tooth broach

A phase-difference detector which uses a clock signal whose frequency is half the data rate, receives data at both rise timing and decay timing of the clock signal, and outputs phase-difference information between the data input signal and the clock signal. The detector has a circuit that comprises first and second register circuits for receiving a data input signal in synchronism with the decay timing and rising timing of the clock signal, respectively; a first exclusive OR circuit with two input terminals connected with the data input and the output terminal of the first register circuit; a second exclusive OR circuit with two input terminals connected with the outputs of the two register circuits; a first AND circuit for calculating the logical product of the inverted signal of the output of the first exclusive OR circuit and the inverted signal of the clock signal, and for producing a &ldquo;down&rdquo; signal; a second AND circuit for calculating the logical product of the output of the first exclusive OR circuit and the inverted clock signal; a third AND circuit with two input terminals connected with the output terminal of the first exclusive OR circuit and the inverted signal of the clock signal; and an OR circuit for calculating the logical result of the outputs of the second and third AND circuits, and for producing an &ldquo;up&rdquo; signal.

Phase-difference detector and clock-recovery circuit using the same

A duty ratio correction circuit includes a pair of circuit blocks each having an input stage inverter for receiving one of complementary clock signals, a first waveform correction circuit for receiving an output from a corresponding one of the input stage inverter, and a second waveform correction circuit for receiving the other of the complementary signals. Each of the waveform correction circuits has a lower output impedance at an initial stage of signal transition of the input signal and a higher output impedance at a subsequent stage of the signal transition.

Waveform correction circuit

Growing community of inventors

Kanagawa, Japan

Kazuyuki Nakamura