Author: "Masaya Ogino" - Searchworks@Jio Institute Digital Library Search Results

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Author: Hiroki Maita, Kanata Tonosaki, Amo Ozawa, Tadashi Kobayashi, Takashi Akimoto, Takashi Mizuno, Masaya Ogino, Takashi Teshiromori, Shigeki Narita, Yuka Miura, and Hiroyuki Hanada
Subjects: Medicine (General), R5-920
Abstract: A 53-year-old otherwise healthy man was referred to our hospital with a fever of unknown origin, headache, and arthralgia. Four days earlier, he had a fever with chills. Treatment with antibiotics and acetaminophen proved ineffective, with the patient subsequently developing headache and joint pain. Blood analysis revealed elevated inflammatory markers, liver impairment, and severe thrombocytopenia (platelet count, 19,000/μL). Subsequent tests revealed elevated levels of anti-cytomegalovirus IgM and IgG. Based on these findings, the patient was diagnosed with severe thrombocytopenia associated with cytomegalovirus infection. Platelet counts increased spontaneously without antiviral therapy. Forty-five days after the initial visit, the symptoms improved, and blood tests revealed resolution of the inflammatory findings, with the platelet count recovering to 155,000/μL. Although the disease may resolve spontaneously, cytomegalovirus infection should be considered as a differential diagnosis in case of severe thrombocytopenia in immunocompetent adults.
Published: 2024
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Author: Ryo Kuroda, Satoru Nishiuma, Masaya Ogino, Kentaro Furusawa, Takeshi Imamura, Tomohiro Yamada, and Yoichiro Handa
Subjects: Materials science, Physics and Astronomy (miscellaneous), business.industry, General Engineering, Physics::Optics, General Physics and Astronomy, Substrate (electronics), Metal, Absorbance, Optics, visual_art, visual_art.visual_art_medium, Surface plasmon resonance, Polarization (electrochemistry), business, Refractive index, Electron-beam lithography, Localized surface plasmon
Abstract: The sensitivities of localized surface plasmon resonant sensors can be improved by changing the shape, size, and arrangement of nanosized metal dots on a substrate. In this study, we fabricated nanosized gold structure arrays on a silica substrate by electron beam lithography combined with a liftoff process, and studied their performance as refractive index sensors. We found that the sensitivity of single gold square dot arrays increases with the pitch while the absorbance decreases. On the other hand, both the sensitivity and absorbance of twin gold square dot arrays increase as the gap distance decreases for a particular incident polarization. We discuss the sensitivity of these structures for practical sensor applications.
Published: 2008
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Author: Masaya Ogino, Ryo Kuroda, Tomohiro Yamanaka, Yasuhisa Inao, Takako Yamaguchi, Natsuhiko Mizutani, and Toshiki Ito
Subjects: Materials science, Fabrication, Polymers and Plastics, business.industry, Organic Chemistry, Finite-difference time-domain method, law.invention, Optics, Resist, law, Materials Chemistry, Optoelectronics, Dry etching, Photolithography, business, Lithography, Electron-beam lithography, Next-generation lithography
Abstract: A resist pattern of half-pitch (hp) 50 nm, 120 nm deep was fabricated with near-field lithography (NFL) of i-line (l = 365 nm) using a positive-tone chemically amplified resist and a tri-layer resist process developed for NFL. The experimental results were in close agreement with the numerical results of electro-magnetic analysis using finite-difference time domain (FDTD) method. The possibility of fabricating sub-50 nm patterns was discussed over the numerical results.
Published: 2005
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