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Kohtaroh Shutoh,Tomoki Hirose,Takashi Shibahara,Takashi Shibahara,Mami Yamazaki,Takashi shiga 국립중앙과학관 2022 Journal of Asia-Pacific Biodiversity Vol.15 No.4
Potamogeton praelongus Wulfen is an aquatic macrophyte that is critically endangered in Japan. Althoughit is widely distributed throughout the boreal climatic zone, several European countries also recognize itas an endangered species. In Japan, it was once widely distributed throughout Hokkaido but has dis appeared or reduced in abundance at its known locations. During 2020e2021, we discovered five newlocations of this species in Wakkanai-shi and Sarufutsu-mura, Northern Hokkaido. Growing conditionsmust be suitable for this species in three of the five locations as it is present with several reproductiveshoots or is widely distributed in source pond or lake. However, conditions were poor in the other twolocations because few shoots were found or plants were observed only in 2020. Environmental condi tions in the new locations were similar to those reported in Europe and North America. In three of thefour locations at Wakkanai-shi, P. praelongus was distributed mainly along the eastern shore facing sanddunes or hills, suggesting that the distribution of this species depends on groundwater springs flowingfrom sand dunes or hills. Further populations may be discovered in the future by intensively surveyingareas near springs since many sand dune lakes and similar environments are present in Hokkaido.
Yamazaki, Tomoaki,Yin, Rui,Kawaguchi, Seisuke,Hayasaka, Hirotatsu,Matsumoto, Toshiyuki,Ichikizaki, Osamu,Kanazawa, Takashi Korean Institute of Industrial Engineers 2012 Industrial Engineeering & Management Systems Vol.11 No.3
Environments surrounding production sites have changed greatly in recent years. Accommodating environmental changes calls for the design and development of information systems that center on production lines. There is a need for a training program that teaches learners to understand the particulars of an operation and apply that knowledge to an information system. In this research, we used material requirements planning (MRP) as the subject for which basic skills are to be taught and developed an MRP exercise-based training program. The program is designed for 13 lectures of 90 minutes each, and it consists of MRP exercises, modeling methods to represent them, the use of a programming language for system development, and finally, evaluation of the exercises. Lecture materials are described in 505 lecture slides using Microsoft PowerPoint to allow visualization of topics through graphs and models. The developed training program was then delivered to 86 college students, and its results were measured through quizzes to verify educational effectiveness.
Kiyohiro Yamazaki,Yuta Yoshino,Yoko Mori,Shinichiro Ochi,Taku Yoshida,Takashi Ishimaru,Shu-ichi Ueno 대한정신약물학회 2015 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.13 No.3
Nasu-Hakola disease (NHD) is a rare autosomal recessive neuropsychiatric disorder characterized by bone cysts, fractures, and cognitive impairment. Two genes are responsible for the development of NHD; TYROBP and TREM2. Although it presents with typical signs and symptoms, diagnosing this disease remains difficult. This case report describes a male with NHD with no family or past history of bone fractures who was diagnosed using exome sequencing. His frontal lobe psychiatric symptoms recovered partially following treatment with sodium valproate, but not with an antipsychotic.
Tomoaki Yamazaki,Rui Yin,Seisuke Kawaguchi,Hirotatsu Hayasaka,Toshiyuki Matsumoto,Osamu Ichikizaki,Takashi Kanazawa 대한산업공학회 2012 Industrial Engineeering & Management Systems Vol.11 No.3
Environments surrounding production sites have changed greatly in recent years. Accommodating environmental changes calls for the design and development of information systems that center on production lines. There is a need for a training program that teaches learners to understand the particulars of an operation and apply that knowledge to an information system. In this research, we used material requirements planning (MRP) as the subject for which basic skills are to be taught and developed an MRP exercise-based training program. The program is designed for 13 lectures of 90 minutes each, and it consists of MRP exercises, modeling methods to represent them, the use of a programming language for system development, and finally, evaluation of the exercises. Lecture materials are described in 505 lecture slides using Microsoft PowerPoint to allow visualization of topics through graphs and models. The developed training program was then delivered to 86 college students, and its results were measured through quizzes to verify educational effectiveness.
Mizukoshi, Tomoaki,Watanabe, Kenichi,Yamazaki, Atsushi,Uritan, Akira,Iguchi, Tetsuo,Ogata, Tomohiro,Muramatsu, Takashi The Korean Association for Radiation Protection 2016 방사선방어학회지 Vol.41 No.3
Background: In order to measure neutron energy spectra, the conventional Bonner Sphere Spectrometers (BSS) are widely used. In this spectrometer, several measurements with different size Bonner spheres are required. Operators should, therefore, place these spheres in several times to a measurement point where radiation dose might be relatively high. In order to reduce this effort, novel neutron energy spectrometer using an onion-like single Bonner sphere was proposed in our group. This Bonner sphere has multiple sensitive spherical shell layers in the single sphere. In this spectrometer, a band-shaped thermal neutron detection medium, which consists of a LiF-ZnS mixed powder scintillator sheet and a wavelength-shifting (WLS) fiber readout, was looped to each sphere at equal angular intervals. Amount of LiF neutron converter is reduced near polar region, where the band-shaped detectors are concentrated, in order to uniform the directional sensitivity. The LiF-ZnS mixed powder has an advantage of extremely high light yield. However, since it is opaque, scintillation photons cannot be collect uniformly. This type of detector shows no characteristic shape in the pulse height spectrum. Subsequently, it is difficult to set the pulse height discrimination level. This issue causes sensitivity fluctuation due to gain instability of photodetectors and/or electric modules. Materials and Methods: In order to solve this problem, we propose to replace the LiF-ZnS mixed powder into a flexible and Transparent RUbber SheeT type $LiCaAlF_6$ (TRUST LiCAF) scintillator. TRUST LiCAF scintillator can show a peak shape corresponding to neutron absorption events in the pulse height spectrum. Results and Discussion: We fabricated the prototype detector with five sensitive layers using TRUST LiCAF scintillator and conducted basic experiments to evaluate the directional uniformity of the sensitivity. Conclusion: The fabricated detector shows excellent directional uniformity of the neutron sensitivity.