Japan Agency for Marine-Earth Science and Technology

Asahi Glass Company, Limited

Nichias Corporation

National Institute for Environmental Studies

Okamoto Glass Co., Ltd.

Tetsuya Miwa

Masayuki Saito

Atsushi Arai

Hiroshi Takahashi

Junichi Nakamura

Masafumi Shimotashiro

Dhugal Lindsay

Makoto Honda

Takeshi Kuboyama

Hitoshi Yamada

Naoya Kuzawa

Satoshi Konishi

Kazuki Morimoto

Takumi Arisawa

Takeo Kaneko

Kinro Hashimoto

Hitoshi Ogura

Hiroshi Koshikawa

Masanobu Kawachi

Shigeshi Fuchida

Shuhei Ota

Yasuo Furushima

Shunsuke Kondo

The present invention provides a device () for detecting contamination with a photosynthesis inhibitor, the device including a collection device () configured to collect a test liquid, a light-blocking pretreatment tank () configured to store the test liquid () collected by the collection device in a state of containing phytoplankton, a stirring device configured to maintain a floating state of the phytoplankton in the test liquid stored in the pretreatment tank, an irradiation light source configured to irradiate the phytoplankton in the test liquid stored in the pretreatment tank with weak light having an underwater photon flux density that does not cause photoinhibition, a drainage conduit () configured to allow the test liquid discharged from the pretreatment tank to flow thereinto, and a fluorescence quantum efficiency measuring machine () provided for the drainage conduit and configured to measure a fluorescence quantum efficiency of the phytoplankton in the test liquid discharged from the pretreatment tank, and a method for detecting contamination with a photosynthesis inhibitor, the method including a liquid supply step, a storing and weak-light irradiation step, and a fluorescence quantum efficiency measurement step.

Device for detecting contamination with photosynthesis inhibitor and method for detecting contamination with photosynthesis inhibitor

An image recording method in an image processing apparatus, includes the steps of acquiring, from a plurality of cameras, respective video images which the plurality of cameras start capturing in the sea before a first light that is lit in a first color is turned on and end capturing after a second light that is lit in a second color is turned on after the first tight is turned on, detecting, for each of the video images, a difference in luminance between chronologically adjacent frames in the video image, associating times of frames between the video images on the basis of the difference, and recording the video images with the associated times in a recording medium.

Image recording method, image recording program, data processing apparatus, and image recording apparatus

Image recording as long as possible during one activity is required in deep sea exploration. Necessity of multi-directional image recording, optical and chemical observations and probing of mineral resources of seabed are also increased. There is no underwater exploration device enable these requirements. It is disclosed that at least one battery-driven underwater exploration body having three pressure-resistant hollow glass spheres for housing an image capturing device, an illumination device, a recording device, an acoustic communication device and a control device controlling thereof and at least one battery body having an approximately the same shape and structure as the underwater exploration body are connected with each other by a connecting tool to provide the connectedly-formed underwater exploration device.

Connectedly-formed underwater exploration device

A linear biodevice is provided with fibers that have a curved portion in its cross section approximately perpendicular to the longitudinal direction and approximately spherical adhesive cells that adhere to the periphery of the fiber. A membrane-like biodevice is provided with a sheet that has an opening and approximately spherical adhesive cells that adhere to the opening. A curved portion is present in the cross section on an inner edge of the opening. A bioreactor is provided with a membrane-like biodevice in which spherical adhesive cells grow densely so as to close the openings of the sheet.

Linear and membrane-like biodevices and bioreactors

Moldings of fluoro rubbers produced by crosslinking a tetrafluoroethylene/propylene copolymer or a tetrafluoroethylene/propylene/vinylidene fluoride copolymer, which have metal contents of 1.5% by mass or below in terms of metal elements and are suitable for use applications necessitating clean environment, for example, manufacturing or carrier equipment for semiconductors, manufacturing equipment, carriers, or storage containers for food, or medical supplies.

Moldings of fluororubbers and process for their production

An elastic copolymer composition which contains a copolymer having a content of polymer units based on vinylidene fluoride as low as from 0.5 to 15 mol %, which is satisfactory in polyol vulcanizability and which gives a vulcanizate excellent in heat resistance and oil resistance. This composition comprises a tetrafluoroethylene (35 to 65 mol %)/propylene (20 to 50 mol %)/vinylidene fluoride (0.5 to 15 mol %) copolymer, an organic quaternary ammonium hydroxide or a salt of an organic quaternary phosphonium compound with a nitrogen-containing heterocyclic compound, an organic polyhydroxy compound, and a metal oxide or a metal hydroxide, and optionally contains an amine compound.

Crosslinkable elastic copolymer composition

A fluorine-containing copolymer characterized by comprising tetrafluoroethylene, vinyl fluoride or vinyl chloride and a polymerizable compound other than the above, and a vulcanizable composition comprising the fluorine-containing copolymer, a vulcanizing agent, an acid-receiving agent and a vulcanization accelerator.

Fluorine-containing copolymer and composition thereof

Growing community of inventors

Yokosuka, Japan

Tetsuya Miwa