The National Institute of Advanced Industrial Science and Technology , or AIST, is a Japanese research facility headquartered in Tokyo, and most of the workforce is located in Tsukuba Science City, Ibaraki, and in several cities throughout Japan. The institute is managed to integrate scientific and engineering knowledge to address socio-economic needs. It became a newly designed legal body of independent administrative institution in 2001, remaining under the Ministry of Economy, Trade and Industry. Wikipedia.
Shimadzu Corporation, Japan National Institute of Advanced Industrial Science and Technology | Date: 2015-06-26
In unipolar charging, a discharge current value at which charging efficiency is best and a discharge current dependency of multivalent charging differ depending on the particle size of the particles that are the object of charging. Therefore, for each particle size, a discharge voltage at which univalent charging efficiency is best and a discharge voltage at which the signal-to-noise ratio of a signal when particles of a different size are regarded as noise is best are obtained through experiment and stored in a storage unit (21). When scanning a classification voltage that is applied to a classification unit (32) of a DMA (3) to measure particle size distribution, a system controlling unit (2) acquires an optimal voltage corresponding to a particle size from the storage unit (21), and in conjunction with scanning of the classification voltage, controls a discharge power source (11) via a discharge voltage controlling unit (10) so that the discharge voltage is scanned in accordance with changes in particle size. It is thereby possible, for example, to reduce the amount of multivalent charged particles of different particle sizes that are mixed in with particles with a predetermined particle size that are extracted by classification, and to accurately determine the particle size distribution.
Japan National Institute of Advanced Industrial Science and Technology | Date: 2015-03-31
Purchase from sellers of selection is enabled to be made through simple operations. Furthermore, prospective purchase events are distributed to sellers as needed. Demands of purchase candidates are retrieved. A trade information exchange method for achieving information exchange among multiple computers included in an information communication network: causes memory means to store reception conditions of sellers received from computers of the sellers; causes the memory means to store request information received from a computer of a purchaser; makes a first selection of choosing one or more sellers having reception conditions that conform to the request information; transmits the request information that does not include purchaser contact information to the computers of the sellers selected in the first selection, subsequently receives information indicating bids, makes a second selection of choosing one or more sellers according to the bids among limited sellers offering bids that can be successfully charged; and permits communication between the computers of the sellers selected in the second selection and the computer of the purchaser.
Japan National Institute of Advanced Industrial Science and Technology | Date: 2017-05-17
The present invention provides a reciprocal-flow-type nucleic acid amplification device comprising:heaters capable of forming a denaturation temperature zone and an extension/annealing temperature zone;a fluorescence detector capable of detecting movement of a sample solution between the two temperature zones;a pair of liquid delivery mechanisms that allow the sample solution to move between the two temperature zones and that are configured to be open to atmospheric pressure when liquid delivery stops; a substrate on which the chip for nucleic acid amplification according to claim 2 can be placed; and a control mechanism that controls driving of each liquid delivery mechanism by receiving an electrical signal from the fluorescence detector relating to movement of the sample solution from the control mechanism; the device being capable of performing real-time PCR by measuring fluorescence intensity for each thermal cycle.
Japan National Institute of Advanced Industrial Science and Technology | Date: 2017-03-22
A thermoelectric conversion element in which one end of an n-type thermoelectric conversion material and one end of a p-type thermoelectric conversion material are each bonded to a conductive substrate using a bonding agent, the n-type thermoelectric conversion material and the p-type thermoelectric conversion material being specific silicides, the bonding agent being a conductive paste containing conductive metals consisting of silver and at least one noble metal selected from the group consisting of gold, platinum, and palladium, as well as a thermoelectric conversion module comprising a plurality of these thermoelectric conversion elements and having a specific structure, achieve excellent thermoelectric conversion performance in an intermediate temperature range of room temperature to about 700C, and performance degradation hardly occurs even when electric generation is repeated, making it possible to maintain the excellent performance over a long period of time.
Japan National Institute of Advanced Industrial Science and Technology | Date: 2017-01-11
An object of the present invention is to provide a method for hydrogenating a biodiesel fuel for producing a biodiesel fuel having an excellent oxidation stability and cold flow property. The present invention serves to produce a biodiesel fuel excellent in oxidation stability, by hydrogenating a biodiesel fuel with oxygen present in the reaction system in the presence of a catalyst containing at least one type of noble metal selected from metals of Groups 8 to 10 in the periodic table.
Japan National Institute of Advanced Industrial Science, Technology and Atsuden Co. | Date: 2017-03-01
An ultrasonic flowmeter capable of increasing the amplitude of, and the receiving sensitivity for, an excited signal is provided. The ultrasonic flowmeter according to the present invention includes two or more ultrasonic transducers on a transmission side and two or more ultrasonic transducers on a receiving side, located as being away from each other on an outer surface of a tube having a fluid flowing therein. The two or more ultrasonic transducers located on the transmission side are driven so as to press the tube at substantially the same pressure to increase an amplitude of an ultrasonic wave. The ultrasonic flowmeter according to the present invention includes adjustment members converting an ultrasonic signal into an ultrasonic signal suitable to measurement between the tube and the ultrasonic transducers. The adjustment members each have a curved surface or a groove at a surface thereof contacting the tube.
Japan National Institute of Advanced Industrial Science and Technology | Date: 2017-03-22
A crystal orientation layer laminated structure capable of widely selecting materials for a base substrate and an electrode substrate, an electronic memory using the crystal orientation layer laminated structure and a method for manufacturing the crystal orientation layer laminated structure are provided. The crystal orientation layer laminated structure according to the present invention has such a feature as including a substrate, including an orientation control layer which is laminated on the substrate, which is made of any of germanium, silicon, tungsten, germanium-silicon, germanium-tungsten and silicon-tungsten, and whose thickness is at least 1 nm or more, and including a first crystal orientation layer which is laminated on the orientation control layer, which is made of any of SbTe, Sb_(2)Te_(3), BiTe, Bi_(2)Te_(3), BiSe and Bi_(2)Se_(3) as a main component, and which is oriented in a certain crystal orientation
Japan National Institute of Advanced Industrial Science and Technology | Date: 2017-09-27
A composite containing phosphorus, lithium, iron, sulfur, and carbon as constituent elements wherein lithium sulfide (Li_(2)S) is present in an amount of 90 mol% or more, and wherein the crystallite size calculated from the half-width of a diffraction peak based on the (111) plane of Li_(2)S as determined by X-ray powder diffraction measurement is 80 nm or less. The composite exhibits a high capacity (in particular, a high discharge capacity) useful as an electrode active material for a lithium-ion secondary battery (in particular, a cathode active material for a lithium-ion secondary battery), without the need for stepwise pre-cycling treatment.
Japan National Institute of Advanced Industrial Science and Technology | Date: 2017-09-20
The inventive phase measuring device includes a first A/D converter 2 that digitizes a first periodical input signal X at each predetermined sampling timing and outputs the resultant signal as a digital signal Xd, a first zero-crossing identification means operable to detect a sign of Xd, a counting processing unit 4 that counts a difference in the number of times of zero-crossing detection by the first zero-crossing identification means and calculates the difference at each sampling timing, and a fraction processing unit 5 that computes a fraction of the number of times of zero-crossing detection on the basis of Xd at sampling timings immediately before and immediately after determination of zero-crossing by the first zero-crossing identification means. An averaging processing unit 6 performs averaging by adding up and totalizing the outputs from the counting processing unit 4 and the fraction processing unit 5, thereby computing a phase. The inventive device thus implements a digital phase measuring device and a digital phase difference measuring device that allow input of periodical signals in a wide frequency range and that are capable of accurate and real-time measurement.
Jansen R.,Japan National Institute of Advanced Industrial Science and Technology
Nature Materials | Year: 2012
Worldwide efforts are underway to integrate semiconductors and magnetic materials, aiming to create a revolutionary and energy-efficient information technology in which digital data are encoded in the spin of electrons. Implementing spin functionality in silicon, the mainstream semiconductor, is vital to establish a spin-based electronics with potential to change information technology beyond imagination. Can silicon spintronics live up to the expectation? Remarkable advances in the creation and control of spin polarization in silicon suggest so. Here, I review the key developments and achievements, and describe the building blocks of silicon spintronics. Unexpected and puzzling results are discussed, and open issues and challenges identified. More surprises lie ahead as silicon spintronics comes of age. © 2012 Macmillan Publishers Limited. All rights reserved.