Tokyo Metroplitan University

Tokyo, Japan

Tokyo Metroplitan University

Tokyo, Japan

Time filter

Source Type

An electric power generation operation point control circuit device includes: a first capacitor connected in parallel to a photovoltaic cell via the pair of electrode connection terminals between the pair of output terminals; a first switching element connected in parallel to the photovoltaic cell via the pair of electrode connection terminals and the inductor between the pair of output terminals and causing a conduction state or a non-conduction state between the connected terminals; and a second capacitor connected in series to the first capacitor between a first electrode connection terminal and a first output terminal and causing the conduction state or the non-conduction state between the connected terminals.


Patent
Toyota Motor Corporation and Tokyo Metroplitan University | Date: 2016-09-16

Three or more photovoltaic cell units connected in series include a unit holding a voltage between output terminals, a first voltage holding unit group having a voltage holding unit holding a voltage between an anode-side terminal and a cathode-side terminal for each photovoltaic cell unit set with respect to each set of the (2k+1)th and (2k+2)th photovoltaic cell units connected in series to each other counted from the anode side, and a second voltage holding unit group having a voltage holding unit holding a voltage between an anode-side terminal and a cathode-side terminal for each photovoltaic cell unit set with respect to each set of the (2k+2)th and (2k+3)th photovoltaic cell units connected in series to each other counted from the anode side.


A method for generating a CPT resonance, includes applying an electric current to a laser light-emitting element, to emit laser light having at least two wavelengths. The value of a direct current component of the electric current applied to the laser light-emitting element in a first period is greater than an oscillation threshold for the laser light-emitting element, and the value of the direct current component of the electric current applied to the laser light-emitting element in a second period, following the first period, is less than the value of the direct current component of the electric current in the first period. An alkali metal atom is irradiated with the laser light, the laser light generated in the first period and the laser light generated in the second period entering the alkali metal atom repeatedly a plurality of times to generate a Ramsey resonance.


Patent
Sony Corporation and Tokyo Metroplitan University | Date: 2016-07-01

There is provided an image processing apparatus which includes a division unit dividing an image into a plurality of images in a bit depth direction, and an encoding unit encoding respectively some or all of the plurality of images acquired by dividing the image in the bit depth direction by the division unit.


Patent
Sony Corporation and Tokyo Metroplitan University | Date: 2016-03-18

There is provided an image processing apparatus including a tone mapper that losslessly tone maps image data in a floating-point representation, a base layer generator that generates base layer image data by reducing a bit depth of the image data tone mapped by the tone mapper, and an enhancement layer generator that generates enhancement layer data by using the image data tone mapped by the tone mapper and the base layer image data generated by the base layer generator.


Patent
Tokyo Ohka Kogyo and Tokyo Metroplitan University | Date: 2016-03-29

A nonaqueous secondary battery, a manufacturing method thereof, and an electrolyte. The battery includes a positive electrode, a negative electrode, a substrate and an electrolyte, in which respective end surfaces of the positive electrode and the negative electrode face each other at a distance, the positive electrode and the negative electrode are arranged in substantially the same plane, the substrate fixingly supports the positive electrode and the negative electrode, the electrolyte is present between the facing end surfaces of the positive electrode and the negative electrode, the electrolyte is involved in a battery reaction between the positive electrode and the negative electrode, and the electrolyte contains ion conductive inorganic solid electrolyte particles and a liquid electrolyte component.


Nomura K.,Tokyo Metroplitan University | Zhang S.,Tokyo Metroplitan University
Chemical Reviews | Year: 2011

Reported examples of vanadium complexes employed as homogeneous catalyst precursors for olefin polymerization, including some of the recent efforts using (arylimido) vanadium(V) complex catalysts for precise olefin polymerization, are summarized. More recent examples for ethylene dimerization and ring-opening metathesis polymerization to demonstrate the unique characteristics of vanadium are also compiled. Use of thiobis(phenoxy) ligand in place of the dithiolato ligand improved the catalytic activity, and a complex showed remarkable catalytic activities in the presence of cocatalyst. arylimido)vanadium(IV) dichloride complexes has shown high catalytic activities for ethylene polymerization in the presence of Et2AlCl cocatalyst. Feher et al. reported that vanadium-containing silsesquioxane showed catalytic activity for ethylene polymerization in the presence of AlMe3 as the cocatalyst affording polymer with unimodal distribution.


Haruta M.,Tokyo Metroplitan University
Faraday Discussions | Year: 2011

Gold can be deposited as nanoparticles (NPs) of 2 to 5 nm in diameter on a variety of materials such as metal oxides and carbides, carbons, organic polymers and exhibits surprisingly high catalytic activities for many reactions in both gas and liquid phases. The mechanisms for the genesis of catalysis by gold NPs is discussed based on real powder catalysts and model single crystal catalysts for two simple reactions, low-temperature oxidation of CO in which gold NPs catalysts are exceptionally active and for dihydrogen dissociation in which gold NPs catalysts are still poorly active. For both the two reactions, it has been revealed that reactions take place at perimeter interfaces around gold NPs. © 2011 The Royal Society of Chemistry.


Patent
Tokyo Metroplitan University and Nippon Kayaku Kabushiki Kaisha | Date: 2016-01-13

Provided are a compound represented by formula (1) and a photoelectric conversion element in which the compound is supported within a thin layer of oxide semiconductor fine particles disposed upon a substrate. (In formula (1), m1 represents an integer from 1 to 4; M represents a metalloid atom; Y_(1), Y_(2), and Y_(3) each independently represent a hydrogen atom or an aromatic residue; Z_(1) and Z_(2) each independently represent a halogen atom; Ar_(1) and Ar_(2) each independently represent an aromatic ring; and X_(1) is a substituent on aromatic ring(s) Ar_(1) and/or Ar_(2) and represents either one or more substituents selected from the group consisting of formulas (2), (3), and (4).)


Patent
Toyota Motor Corporation and Tokyo Metroplitan University | Date: 2016-04-27

In a circuit device controlling an operating point of each of two or more series-connected photovoltaic cells or other power supply cells in a module, the output voltage of the module can be boosted without reducing the generated electric power. The operating point control circuit device includes capacitors connected in parallel to the respective series-connected cells, switching elements connected in parallel to the respective series-connected cells through an inductor, an additional capacitor connected in series to the capacitor row, and an additional switching element connected in series to the switching element row. The switching elements are controlled to shut off electrical conduction between the corresponding terminals connected thereto in the same predetermined cycle and in mutually different periods so as to always establish a condition that one switching element is in the non-conductive state and the others are is in the conductive state.

Loading Tokyo Metroplitan University collaborators
Loading Tokyo Metroplitan University collaborators