Search Results - "Hiroaki MURAYAMA"

Author Correction: The impact of temperature on the transmissibility and virulence of COVID-19 in Tokyo, Japan by Yamasaki, Lisa, Murayama, Hiroaki, Hashizume, Masahiro

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The impact of temperature on the transmissibility and virulence of COVID-19 in Tokyo, Japan by Yamasaki, Lisa, Murayama, Hiroaki, Hashizume, Masahiro

“…Assessing the impact of temperature on COVID-19 epidemiology is critical for implementing non-pharmaceutical interventions. However, few studies have accounted…”
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The impact of temperature on the transmissibility potential and virulence of COVID-19 in Tokyo, Japan by Yamasaki, Lisa, Murayama, Hiroaki, Hashizume, Masahiro

“…Assessing the impact of temperature on COVID-19 epidemiology is critical for implementing non-pharmaceutical interventions. However, few studies have accounted…”
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Copper(I)-Catalyzed Intramolecular Hydroalkoxylation of Unactivated Alkenes by Murayama, Hiroaki, Nagao, Kazunori, Ohmiya, Hirohisa, Sawamura, Masaya

“…A Cu­(I)–Xantphos system catalyzed the intramolecular hydroalkoxylation of unactivated terminal alkenes, giving five- and six-membered ring ethers. This system…”
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Phosphine-Catalyzed Vicinal Acylcyanation of Alkynoates by Murayama, Hiroaki, Nagao, Kazunori, Ohmiya, Hirohisa, Sawamura, Masaya

“…Phosphine organocatalysis enabled vicinal acylcyanation of alkynoates with acyl cyanides to form acrylonitrile derivatives with a tetrasubstituted alkene…”
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Age-Dependent Effects of COVID-19 Vaccine and of Healthcare Burden on COVID-19 Deaths, Tokyo, Japan by Ko, Yura K, Murayama, Hiroaki, Yamasaki, Lisa, Kinoshita, Ryo, Suzuki, Motoi, Nishiura, Hiroshi

“…COVID-19 vaccine effectiveness against death in Japan remains unknown. Furthermore, although evidence indicates that healthcare capacity influences…”
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Estimation of waning vaccine effectiveness from population-level surveillance data in multi-variant epidemics by Murayama, Hiroaki, Endo, Akira, Yonekura, Shouto

“…Monitoring time-varying vaccine effectiveness (e.g., due to waning of immunity and the emergence of novel variants) provides crucial information for outbreak…”
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Chronological Change of the Clinical Features and Treatment Outcomes for Subarachnoid Hemorrhage in Japan: A Multicenter Retrospective Study by MURAYAMA, Hiroaki, KANEMARU, Kazuya, YOSHIOKA, Hideyuki, FUKAMACHI, Akira, SHIMIZU, Tsuneo, OMATA, Tomohiro, FUKASAWA, Isao, NAGASAKA, Mitsuyasu, NAKANO, Shin, ASARI, Yasuhiro, KINOUCHI, Hiroyuki

“…Aneurysmal subarachnoid hemorrhage (SAH) treatment has progressed, and patients are rapidly aging in Japan. Consequently, dynamic changes must have emerged in…”
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Efficacy of Intraarterial Fluorescence Video Angiography in Surgery for Dural and Perimedullary Arteriovenous Fistula at Craniocervical Junction by Kanemaru, Kazuya, Yoshioka, Hideyuki, Hashimoto, Koji, Murayama, Hiroaki, Ogiwara, Masakazu, Yagi, Takashi, Horikoshi, Tohru, Kinouchi, Hiroyuki

“…Confirming the exact location of a fistula and the origins of draining veins during surgery for dural and perimedullary arteriovenous fistulas (AVFs) is…”
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Distribution Patterns of Spinal Epidural Fluid in Patients with Spontaneous Intracranial Hypotension Syndrome by YAGI, Takashi, HORIKOSHI, Toru, SENBOKUYA, Nobuo, MURAYAMA, Hiroaki, KINOUCHI, Hiroyuki

“…The aim of this study is to clarify the details of distribution patterns of spinal epidural fluid and to establish it as measure of spontaneous intracranial…”
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Accurate and simple method for quantification of hepatic fat content using magnetic resonance imaging: a prospective study in biopsy-proven nonalcoholic fatty liver disease by Hatta, Tomoko, Fujinaga, Yasunari, Kadoya, Masumi, Ueda, Hitoshi, Murayama, Hiroaki, Kurozumi, Masahiro, Ueda, Kazuhiko, Komatsu, Michiharu, Nagaya, Tadanobu, Joshita, Satoru, Kodama, Ryo, Tanaka, Eiji, Uehara, Tsuyoshi, Sano, Kenji, Tanaka, Naoki

“…Background To assess the degree of hepatic fat content, simple and noninvasive methods with high objectivity and reproducibility are required. Magnetic…”
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Distribution Patterns of Spinal Epidural Fluid in Patients with Spontaneous Intracranial Hypotension Syndrome by Takashi YAGI, Toru HORIKOSHI, Nobuo SENBOKUYA, Hiroaki MURAYAMA, Hiroyuki KINOUCHI

“…[Abstract] The aim of this study is to clarify the details of distribution patterns of spinal epidural fluid and to establish it as measure of spontaneous…”
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Distribution Patterns of Spinal Epidural Fluid in Patients with Spontaneous Intracranial Hypotension Syndrome by Takashi YAGI, Toru HORIKOSHI, Nobuo SENBOKUYA, Hiroaki MURAYAMA, Hiroyuki KINOUCHI

“…[Abstract] The aim of this study is to clarify the details of distribution patterns of spinal epidural fluid and to establish it as measure of spontaneous…”
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Heavy-tailed sexual contact networks and monkeypox epidemiology in the global outbreak, 2022 by Endo, Akira, Murayama, Hiroaki, Abbott, Sam, Ratnayake, Ruwan, Pearson, Carl A B, Edmunds, W John, Fearon, Elizabeth, Funk, Sebastian

“…The outbreak of monkeypox across non-endemic regions confirmed in May 2022 shows epidemiological features distinct from previously imported outbreaks, most…”
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Dynamic landscape of mpox importation risks driven by heavy-tailed sexual contact networks among men who have sex with men in 2022 by Jung, Sung-Mok, Miura, Fuminari, Murayama, Hiroaki, Funk, Sebastian, Wallinga, Jacco, Lessler, Justin, Endo, Akira

“…During the 2022 global mpox outbreak, the cumulative number of countries reporting their first imported case quickly rose in the early phase, but the…”
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Accumulation of Immunity in Heavy-Tailed Sexual Contact Networks Shapes Mpox Outbreak Sizes by Murayama, Hiroaki, Pearson, Carl A B, Abbott, Sam, Miura, Fuminari, Jung, Sung-mok, Fearon, Elizabeth, Funk, Sebastian, Endo, Akira

“…Abstract Many countries affected by the global outbreak of mpox in 2022 have observed a decline in cases. Our mathematical model accounting for heavy-tailed…”
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Asymmetric Synthesis of α‑Alkylidene-β-Lactams through Copper Catalysis with a Prolinol-Phosphine Chiral Ligand by Imai, Koji, Takayama, Yurie, Murayama, Hiroaki, Ohmiya, Hirohisa, Shimizu, Yohei, Sawamura, Masaya

“…A copper/prolinol-phosphine chiral catalyst enabled the one-step synthesis of chiral α-alkylidene-β-lactams. Optimization of the chiral ligand for steric and…”
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Estimating COVID-19 cases infected with the variant alpha (VOC 202012/01): an analysis of screening data in Tokyo, January-March 2021 by Murayama, Hiroaki, Kayano, Taishi, Nishiura, Hiroshi

“…In Japan, a part of confirmed patients' samples have been screened for the variant of concern (VOC), including the variant alpha with N501Y mutation. The…”
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Endoscope-Integrated Fluorescence Video Angiography for the Surgery of Ventrally Located Perimedullary Arteriovenous Fistula at Craniocervical Junction by Horiuchi, Ryo, Kanemaru, Kazuya, Yoshioka, Hideyuki, Hashimoto, Koji, Murayama, Hiroaki, Yagi, Takashi, Ogiwara, Masakazu, Kinouchi, Hiroyuki

“…Intraoperative confirmation of the vascular anatomy and blood flow contributes to the safety of the surgery for perimedullary arteriovenous fistulas (PAVF)…”
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Metastasis of Carcinoma to a Cerebral Arteriovenous Malformation by Kazama, Hirofumi, Yoshioka, Hideyuki, Kanemaru, Kazuya, Murayama, Hiroaki, Hashimoto, Koji, Yagi, Takashi, Kinouchi, Hiroyuki

“…Although carcinoma metastasis to primary intracranial neoplasms has occasionally been reported, metastasis to a cerebral arteriovenous malformation (AVM) has…”
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