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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.
Combination of a SARS-CoV-2 IgG Assay and RT-PCR for Improved COVID-19 Diagnosis
Aoki Kotaro,Takai Kunitomo,Nagasawa Tatsuya,Kashiwagi Katsuhito,Mori Nobuaki,Matsubayashi Keiji,Satake Masahiro,Tanaka Ippei,Kodama Nanae,Shimodaira Takahiro,Ishii Yoshikazu,Miyazaki Taito,Ishii Toshi 대한진단검사의학회 2021 Annals of Laboratory Medicine Vol.41 No.6
Background: Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is generally diagnosed by reverse transcription (RT)-PCR or serological assays. The SARS-CoV-2 viral load decreases a few days after symptom onset. Thus, the RT-PCR sensitivity peaks at three days after symptom onset (approximately 80%). We evaluated the performance of the ARCHITECT® SARS-CoV-2 IgG assay (henceforth termed IgG assay; Abbott Laboratories, Lake County, IL, USA), and the combination of RT-PCR and the IgG assay for COVID-19 diagnosis. Methods: In this retrospective study, 206 samples from 70 COVID-19 cases at two hospitals in Tokyo that were positive using RT-PCR were used to analyze the diagnostic sensitivity. RT-PCR-negative (N=166), COVID-19-unrelated (N=418), and Japanese Red Cross Society (N=100) samples were used to evaluate specificity. Results: Sensitivity increased daily after symptom onset and exceeded 84.4% after 10 days. Specificity ranged from 98.2% to 100% for samples from the three case groups. Seroconversion was confirmed from 9 to 20 days after symptom onset in 18 out of 32 COVID-19 cases with multiple samples and from another case with a positive result in the IgG assay for the first available sample. Conclusions: The combination of RT-PCR and IgG assay improves the robustness of laboratory diagnostics by compensating for the limitations of each method.
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.
Search for the H Dibaryon in (K^-,K^+) Reactions
Aoki, S.,Chung, K.S.,Park, I.G.,Song, J. S. 慶尙大學校 기초과학연구소 1990 基礎科學硏究所報 Vol.6 No.-
We have studied (K^-,K^+) reactions from an emulsion target. The S=-2H dibaryon has been searched for by the analysis of the K^+ momentum spectrum together with emulsion data. No evidence of H production was observed in the mass range of 1.90-2.16 GeV/C^2. Upper limits for the production cross section of the H are (0.2-0.6)% of that for the quasifree≡^- production at the 90% confidence level.