公开(公告)号：US20220260540A1

公开(公告)日：2022-08-18

申请号：US17627421

申请日：2020-06-17

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Genki YOSHIKAWA ,  Takahiro NEMOTO ,  Masaaki MATOBA ,  Kosuke MINAMI

IPC: G01N33/00 ,  G01N1/38

Abstract: The present invention suppresses an adverse effect caused when an additional gas such as water vapor is mixed in a sample gas or the like that is subjected to gas measurement. In an embodiment of the present invention, in gas measurement for analyzing sensor output signals obtained by alternately supplying a sample gas and a reference gas to a sensor element while alternately switching between the sample gas and the reference gas, the sample gas and the reference gas pass through a humidity equilibration device partitioned by a water vapor permeable membrane, and then are supplied to the sensor element. As a result, since both gases have substantially the same value of humidity at the time of being supplied to the sensor element, influences of water vapor are substantially cancelled out in signals output from the sensor element by the alternate supply of the sample gas and the reference gas.

公开(公告)号：US20210215556A1

公开(公告)日：2021-07-15

申请号：US17267094

申请日：2019-08-28

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Genki YOSHIKAWA ,  Takahiro NEMOTO ,  Makito NAKATSU ,  Naoto TAKEDA ,  Kota SHIBA ,  Kosuke MINAMI

IPC: G01L1/26 ,  G01L1/22 ,  B08B7/00

Abstract: A method for cleaning a receptor layer of a surface stress sensor according to an embodiment of the present invention includes, in a surface stress sensor that detects a change in surface stress of a thin film, the change being caused by a receptor layer disposed on a surface of the thin film, causing at least a part of a surface region of the thin film to generate heat or supplying heat to the receptor layer from the outside of the surface stress sensor. This makes it possible to easily perform efficient cleaning of a surface stress sensor such as a sensor that performs detection using a piezoresistor while avoiding structural complications as much as possible.

公开(公告)号：US20230147626A1

公开(公告)日：2023-05-11

申请号：US17914956

申请日：2021-03-19

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Ryo NAKAKUBO ,  Mitsuyoshi ISHIDA ,  Masanori TOHNO ,  Hisami KOBAYASHI ,  Genki YOSHIKAWA ,  Kosuke MINAMI ,  Gaku IMAMURA ,  Hideki MATSUZAKA ,  Takahiro NEMOTO

IPC: G01N33/00

CPC classification number: G01N33/0047

Abstract: An object of the present invention is to make it possible to easily evaluate silage fermentation quality on site or the like. In one embodiment of the present invention, a gas generated from silage is applied to a surface stress sensor, and the amount of either one of organic acids and nitrogen-containing compounds contained in the silage is determined. The surface stress sensor can detect trace components in a gas by a simple device configuration and in simple procedures. Therefore, by utilizing the fact that relationship between the content of these components and the fermentation quality is known, the evaluation of fermentation quality can be easily realized by the above measurement.

公开(公告)号：US20230273183A1

公开(公告)日：2023-08-31

申请号：US18015792

申请日：2021-07-12

Applicant: National Institute for Materials Science

Inventor： Ryoh NAKAKUBO ,  Mitsuyoshi ISHIDA ,  Genki YOSHIKAWA ,  Kosuke MINAMI ,  Gaku IMAMURA ,  Hideki MATSUZAKA ,  Takahiro NEMOTO

IPC: G01N33/487

CPC classification number: G01N33/487

Abstract: An object of the present invention is to make it possible to easily determine a presence or absence of ketosis and/or the possibility of ketosis in an animal on site or the like. Another object of the present invention is to provide an apparatus for performing the determination. A method for determining ketosis according to one embodiment of the present invention includes providing gas detection means with a gas generated from a body fluid collected from an animal (except for humans), and determining ketosis of the animal based on a composition of the gas generated from the body fluid using a response of the gas detection means to the gas generated from the body fluid.