Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Koichi Koyama"'
Publikováno v:
Clinical Nuclear Medicine. 45:795-797
A 62-year-old woman was referred for cough and lower abdominal pain. F-FDG PET/CT showed strong uptake not only in the left lung mass and hilar and mediastinal lymph nodes, but also a huge lower abdominal mass. All lesions were initially thought to b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b55a88ff4578c099fede532be45dd85
https://doi.org/10.1097/rlu.0000000000003129
https://doi.org/10.1097/rlu.0000000000003129
Autor:
Hideki Matsumura, Hideo Suzuki, Keisuke Ohdaira, Koichi Koyama, Noboru Yamaguchi, Huynh-Thi-Cam Tu
Publikováno v:
Thin Solid Films. 683:150-155
In this work, we propose counter-doping into a p-type amorphous silicon (a-Si) film prepared by catalytic chemical vapor chemical deposition (Cat-CVD) by PH3 plasma ion implantation (PII). This method is expected to simplify the formation of p-n patt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb920e639db44fa7ee449ec4ed535865
http://hdl.handle.net/10119/18009
http://hdl.handle.net/10119/18009
Publikováno v:
Journal of Materials Research. 33:1515-1522
In this paper, we show a novel method to obtain small size textures usable in crystalline silicon (c-Si) solar cells. SiO2-based glass microparticles are mixed with a conventional KOH-based alkaline solution for making the textures. Using this mixing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0cce732d09d3b5a33dd3508d6304aa3
https://doi.org/10.1557/jmr.2018.151
https://doi.org/10.1557/jmr.2018.151
Comparison of MR imaging features of uterine neuroendocrine carcinoma and uterine malignant lymphoma
Autor:
Koichi Koyama, Taro Shimono, Tomoyuki Ichimura, Michiko Sugimoto, Yukio Miki, Yasunori Hashiguchi
Publikováno v:
Abdominal radiology (New York). 44(10)
We retrospectively investigated the characteristic magnetic resonance (MR) imaging findings of uterine neuroendocrine carcinoma (UNEC) compared to those of uterine malignant lymphoma (UML). Nine consecutive female patients with UNEC and 5 female pati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c1c0292d2a71e71f6b67b4d48a6d9a9
https://pubmed.ncbi.nlm.nih.gov/31473773
https://pubmed.ncbi.nlm.nih.gov/31473773
Autor:
Hirano Mitsuharu, Hideki Machida, Yasunori Murakami, Kazunori Tanaka, Akira Furuya, Koichi Koyama
Publikováno v:
2019 IEEE 69th Electronic Components and Technology Conference (ECTC).
We report a novel, single mode optical fiber array coupler that couples the single mode fibers (SMFs) with grating couplers (GCs) on a silicon photonics chip and has D-shaped (DS) fibers. This DS fiber array coupler has obliquely polished tips of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65dd9ebe9fc0d7dc940e3e297b1c63f1
https://doi.org/10.1109/ectc.2019.00167
https://doi.org/10.1109/ectc.2019.00167
Autor:
Tetsuya Nakanishi, Kaoru Hirashima, Yasunori Murakami, Sato Fumiaki, Takashi Sasaki, Tetsuya Hayashi, Osamu Shimakawa, Akira Furuya, Koichi Koyama
Publikováno v:
Journal of Lightwave Technology. 34:85-92
A novel multi-core fiber (MCF), having eight cores within a 125-μm-diameter cladding and suitable for short-reach transmissions, is proposed. By optimizing O-band transmission, the proposed MCF realized the high-density core packing simultaneously a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ae45f8575999bfa386661b2535c3031
https://doi.org/10.1109/jlt.2015.2470078
https://doi.org/10.1109/jlt.2015.2470078
Publikováno v:
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC).
For further reduction of the fabrication cost of interdigitated back-contact (IBC) crystalline-silicon (c-Si) heterojunction (SHJ) solar cells, we investigated the performance of SHJ solar cells with directly metallized electrodes on catalytic chemic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::297d9013d8a020b53dc325a4bb93ed6b
https://doi.org/10.1109/pvsc.2018.8548165
https://doi.org/10.1109/pvsc.2018.8548165
Autor:
Noboru Yamaguchi, Huynh Thi Cam Tu, Keisuke Ohdaira, Koichi Koyama, Hideki Matsumura, Hideo Suzuki
Publikováno v:
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC).
A novel low cost method for fabricating interdigitated back contact crystalline silicon (c-Si) heterojunction (IBC-SHJ) solar cells is proposed. In the method, selected patterned areas of p-a-Si layer are converted to n-a-Si by phosphine (PH 3 ) plas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44d3bcfaafb1e49e6e307d69ce1888f3
https://doi.org/10.1109/pvsc.2018.8547763
https://doi.org/10.1109/pvsc.2018.8547763
Autor:
Koichi Koyama
Publikováno v:
Parasitology Research. 115:437-440
Using three isolates of the murine parasitic nematode Trichuris muris, E, E/J (the E isolate maintained in Japan), and S, I have previously demonstrated that when the embryonated eggs of the E/J and E isolates are incubated with the intestinal bacter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f82dacc0b76b196425d60e96dd5afa61
https://doi.org/10.1007/s00436-015-4795-2
https://doi.org/10.1007/s00436-015-4795-2
Publikováno v:
Thin Solid Films. 575:92-95
We have discovered that phosphorus (P) atoms can be doped into crystalline silicon (c-Si) at temperatures below 350 °C or even at 80 °C by using species generated by catalytic cracking reaction of phosphine (PH 3 ) molecules with heated tungsten (W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3448de0bfa9b77ed34ccbcb277003f32
https://doi.org/10.1016/j.tsf.2014.10.017
https://doi.org/10.1016/j.tsf.2014.10.017