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A Rational Entry to Cyclic Polymers via Spontaneous and Selective Cyclization Reactions
Daisuke Aoki 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1
Although recent advances in chemistry have made it possible to synthesize polymers with various topologies, effective routes that selectively afford cyclic topology in high yield and quantity still remain limited. This is mostly due to difficulties associated with purification, and, in particular, the selectivity of macrocyclizations. In this work, effective synthetic methods for the cyclic polymers were developed by utilizing supramolecular chemistry<sup>1</sup> and dynamic covalent chemistry.<sup>2</sup> (1) D. Aoki et al., J. Am. Chem. Soc., 139, 6791 (2017). (2) D. Aoki et al., Angew. Chem. Int. Ed., 59, 4269 (2020).
Eiko Saitoh Aoki,Kumiko Saika,Kazushige Kiguchi,Tohru Morisada,Daisuke Aoki 대한부인종양학회 2023 Journal of Gynecologic Oncology Vol.34 No.2
Objective: In Japan, cervical cancer screening consists of a cytology examination performed once every 2 years. We verified whether the risk of cervical intraepithelial neoplasia (CIN) 3 disease or higher (CIN3+) was equivalent to that of cytology negative cases (negative for intraepithelial lesion or malignancy [NILM]) for patients with a cytological diagnosis of “atypical squamous cells of undetermined significance (ASC-US)” who tested negative for human papillomavirus (HPV). Methods: Data from a total of 22,925 cases who had undergone cervical cancer screening at least twice or who had completed follow-up examinations after cervical screening at a single facility between April 2013 and April 2018 were analyzed. The cumulative incidence of CIN3+ was calculated for each category of initial cytology finding and HPV result (NILM, > ASC-US, ASC-US/HPV (unknown), ASC-US/HPV+, and ASC-US/HPV−). The statistical analysis was conducted using the Cox proportional hazards model. Results: The hazard ratio for the cumulative incidence of CIN3+ in 2 years relative to that for NILM cases was 2.7 (95% confidence interval=1.0–7.8) for > ASC-US cases, 0.5 (0.1–1.7) for ASC-US/HPV (unknown), 0.8 (0.3–2.4) for ASC-US/HPV+ cases, and 0.3 (0.1–1.0) for ASC-US/HPV− cases. Conclusion: Because the cumulative incidence of CIN3+ at 2 years for the ASC-US/HPV− cases was sufficiently low, compared with that of the NILM cases, we considered it reasonable and safe to perform HPV triage for ASC-US cases and to allow HPV-negative cases to return for their next screening in 2 years, which is the same follow-up schedule as that for NILM cases.
Park, Seong-Sik,Aoki, Jun-ichi 한국곤충학회 1986 Korean journal of entomology Vol.16 No.1
한국산 날개응애류중에서 검둥이응애과(Caratodiidae)에 속하는 무늬검둥이응애 (Carabodes transversarius sp. n.)와 어깨점둥이응애 (C. tsushimaensis dorsalis subsp. n.)를 신종으로 기재하고 대마도 검둥이응애 (C. tsushimaensis Aoki, 1970)를 미기록종으로 기록하며 Caradodes속의“femoralis group”의 종검색표를 작성하였다. Two new species and one unrecorded species of Korean oribatid mites belonging to the genus Car-aboder C. L. Koch, 1836 (Carabodiidae) are described. They are C. transversarius sp. nov., C. tsu shimaensis dorsalis subsp. nov. and C. tsushimaensis Aoki, 1970. A Key to the species of“femoralis group”of the genus Caradodes is presented.
韓國產 날개응애類(3) Defectamerus 屬의 新種에 關하여
SEONG SIK CHOI,JUN-ICHI AOKI 한국응용곤충학회 1985 한국응용곤충학회지 Vol.24 No.3
Defectamerus soonkii sp. nov. and D. crassisetiger coreanus subsp. nov. belonging to the family Ameridae are described. Key to the species of the genus Defectamerus Aoki is presented. 한국산(韓國産) Defectamerus속(屬)의 1 신종(新種), 1 신아종(新亞種) 및 종검색표(種檢索表)를 작성(作成)하였다. 신종(新種)은 순기민동정응애(D. soonkii sp. nov.)와 신아종(新亞種)으로 한국민동정응애(D. crassisetiger coreanus subsp. nov.)를 기재(記載)하였다.
Aoki, Mai,Sato, Yukio,Teranishi, Ryo,Kaneko, Kenji Korean Society of Microscopy 2018 Applied microscopy Vol.48 No.1
Barium titanate ($BaTiO_3$) nanoparticle is one of the most promising materials for future multi-layer ceramic capacitor and ferroelectric random access memory. It is well known that electrical property of nanoparticles depends on the atomistic structure. Although surface may possibly have an impact on the atomistic structure, reconstructed structure at the surface has not been widely investigated. In the present study, Ba-ion position near surface in a $BaTiO_3$ nanoparticle has been quantitatively characterized by scanning transmission electron microscopy. It was found that some Ba ions at the surface were greatly displaced in non-uniform directions.
Generation of monoclonal antibodies specific for ORF68 of koi herpesvirus
Aoki, T.,Takano, T.,Unajak, S.,Takagi, M.,Kim, Y.R.,Park, S.B.,Kondo, H.,Hirono, I.,Saito-Taki, T.,Hikima, J.i.,Jung, T.S. Pergamon Press 2011 Comparative immunology, microbiology and infectiou Vol.34 No.3
Outbreaks of koi herpesvirus (KHV) infection in carp are still a serious problem worldwide. KHV is closely related to other two cyprinid herpesviruses, pox herpesvirus (CHV) and haematopoietic necrosis herpesvirus (CyHV-2) in goldfish. In this study, two major KHV antigenic proteins (ORF62 and ORF68) were identified by immunoscreening using a KHV-specific polyclonal antibody, and then monoclonal antibodies were generated for immunodiagnostic studies. After screening hybridoma cells, one mAb against ORF68 (mAb-7C6) was obtained but no mAbs against ORF62. mAb-7C6 specifically reacted with a lysate of KHV-infected koi fin cells (KF-1 cells) but not with lysates of CHV- or CyHV-2-infected KF-1 cells in an immuno-blotting analysis. Similar results were shown in the following tests: (1) a indirect fluorescent antibody test using infected KF-1 cells and (2) an immunohistochemical investigation by fast red stain (infected liver) or FITC detection (infected spleen). These results suggested that mAb-7C6 specifically reacts with KHV ORF68 protein.
Evidence of Weak Decay of Heavy Double Hypernuclei
Aoki, S.,Bahk, S. Y.,Chung, K. S.,Chung, S. H.,Funahashi, H.,Hahn, C. H.,Hara, T.,Hirata, S.,Hoshino, K.,Ieiri, M.,Iijima, T.,Imai, K.,Ishigami, T.,Itow, Y.,Kazuno, M.,Kikuchi, K.,Kim, C. O.,Kim, D. C 國立昌原大學校 基礎科學硏究所 1992 基礎科學硏究所論文集 Vol.3 No.-
We have studied 80 events of candidates for ??? capture star at rest in nuclear emulsion, where ??? hyperons are produced in (??????) reactions identified by a ?? spectrometer. The weak decay of heavy double hypernuclei is confirmed, studying the distribution of visible energy-release and the probability of emission of two fast protons, in comparison with those for single hypernuclei.