Motoki Nakajima

  • Citations Per Year
Learn More
A new highly efficient carboxylic acid analyzer, employed with liquid chromatography and a specific detection method, has been designed for the quantitative analysis of carboxylic acids in foods and biological samples. This apparatus is particularly advanced in terms of its sensitivity and resolution as a result of the extensive modifications to our(More)
The Monitor of All Sky X-ray Image (MAXI) mission is the first astronomical payload to be installed on the Japanese Experiment Module Exposed Facility (JEM-EF or Kibo-EF) on the International Space Station (ISS). It is scheduled for launch in the middle of 2009 to monitor all-sky X-ray objects on every ISS orbit. It will be more powerful than any previous(More)
The accretion-powered pulsar Her X-1 was observed with Suzaku twice in its main-on state, on 2005 October 5-6 and 2006 March 29-30, for a net exposure of 30.5 ks and 34.4 ks, respectively. In the 2005 and 2006 observations, the source was detected at an average 10-30 keV intensity of 290 mCrab and 230 mCrab, respectively. The intrinsic pulse period was(More)
Monitor of all-sky image (MAXI) Gas Slit Camera (GSC) detects gamma-ray bursts (GRBs) including the bursts with soft spectra, such as X-ray flashes (XRFs). MAXI/GSC is sensitive to the energy range from 2 to 30 keV. This energy range is lower than other currently operating instruments which is capable of detecting GRBs. Since the beginning of the MAXI(More)
This work reports the effects of water flow and dissolved oxygen (DO) on corrosion behavior of reduced activation ferritic/martensitic steel, F82H. The corrosion tests were performed in high temperature pressurized water by using a test apparatus for rotated disk sample. All of specimens showed weight gains after static corrosion tests up to 500 h. However,(More)
Semantic understanding of images remains an important research challenge in machine intelligence and statistical learning. It mainly includes two steps: feature extraction and classification. This study mainly focuses scene image recognition, where color information plays an important role. The conventional color representation of images mainly includes(More)
  • 1