リンク集 RSS/ATOM 記事

タイトル: Comparison of global air pollution impacts across horizontal resolutions著者: Jansakoo, Thanapat; Watanabe, Ryouichi; Uetani, Akio; Sekizawa, Satoshi; Fujimori, Shinichiro; Hasegawa, Tomoko; Oshiro, Ken抄録: The impact of ambient air pollution on human health, particularly fine particulate matter (PM[2.5]) and tropospheric ozone (O₃), is a critical global concern. Atmospheric chemical transport models (CTMs) are widely used to predict air pollutant concentrations and assess associated health risks. However, there is a need to better understand how the horizontal resolution of these models influences their accuracy, especially in future assessments. In this study, we compared the performance of global low-resolution CTMs with high-resolution nested simulations for estimating O₃ and PM[2.5] concentrations. The models were validated against observational data to determine their accuracy across different spatial scales and to evaluate their suitability for future scen ...

タイトル: Grain size dependent deformation microstructure evolution and work-hardening in CoCrNi medium entropy alloy著者: Yoshida, Shuhei; Yamashita, Genki; Ikeuchi, Takuto; Bai, Yu; Shibata, Akinobu; Tsuji, Nobuhiro抄録: This study clarified the grain size dependence of the deformation microstructure evolution and work-hardening behavior in CoCrNi medium entropy alloy. We fabricated fully recrystallized specimens with coarse-grained (CG) and ultrafine-grained (UFG) specimens by severe plastic deformation and subsequent annealing processes. Tensile deformation was applied to the specimens at room temperature. The UFG specimen exhibited both high strength and high ductility compared to conventional UFG metals due to the high work-hardening ability. In the CG specimen, three distinct types of deformation microstructures consisting of dislocations and deformation twins developed depending on grain orientations, similar to the single-crystalline specimens. In the UFG specimen, wid ...

タイトル: Hybrid Atom Tweezer Array of Nuclear Spin and Optical Clock Qubits著者: Nakamura, Yuma; Kusano, Toshi; Yokoyama, Rei; Saito, Keito; Higashi, Koichiro; Ozawa, Naoya; Takano, Tetsushi; Takasu, Yosuke; Takahashi, Yoshiro抄録: While data qubits with a long coherence time are essential for the storage of quantum information, ancilla qubits are pivotal in quantum error correction (QEC) for fault-tolerant quantum computing. The recent development of optical tweezer arrays, such as the preparation of large-scale qubit arrays and high-fidelity gate operations, offers the potential for realizing QEC protocols, and one of the important next challenges is to control and detect ancilla qubits while minimizing atom loss and crosstalk. Here, we present the realization of a hybrid system consisting of a dual-isotope ytterbium (Yb) atom array, in which we can utilize a nuclear spin qubit of fermionic ¹⁷¹Yb as a data qubit and an optical clock qubit of bosonic ¹⁷⁴Yb as an anci ...

タイトル: Analysis of plant physiological responses based on leaf color changes through the development and application of a wireless plant sensor著者: Kohzuma, Kaori; Miyamoto, Ko-ichiro抄録: Optical sensing has been used to monitor the physiological responses of plants noninvasively and in real-time. In this study, we developed a low-cost plant sensor that performed a spectroscopic measurement at eight wavelengths in the visible region. The sensor head of the system was attached directly to the underside of the leaf, not blocking the light, and eliminating correction work because of the constant distance between the sensor head and the sample. The collected data was shared in the cloud via a network, thereby enabling remote monitoring. The characteristics of the plant sensor as a spectral photometer were validated, with major wavelengths also showing good correlations with those of a conventional spectrometer. The reflectance of 620 nm in this sensor detected plant aging indi ...

タイトル: EGAP Writing 1: Academic Essays_2025 Edition著者: English Writing-Listening Instructors Institute of Liberal Arts and Sciences, i-ARRC, Kyoto University

Islamist group Hayat Tahrir al-Sham has advanced from its Idlib stronghold in lightning raid on Aleppo

Offensive highlights Bashar al-Assad’s weakness as Israel targets regime supporters Iran and Hizbollah

US president-elect has threatened to hit Canadian imports with steep tariffs as soon as he re-enters office

ChatGPT-maker aims for big boost from new AI products, Apple partnership and infrastructure investment

Ｓ１６．７．１５ ２３：４５ Ｍ６．２一般的には「長沼地震」というようです。回答プロセス:『防災科学技術研究資料 第119号』p210-220に「長沼地震」の項あり。地震日時、規模などが記載されている。長沼と赤沼は同地区だが、質問者が言っている「赤沼地震」かどうかは定かでない。インターネットで「赤沼地震」と検索すると、長野郷土史研究会のページにヒットする。http://www.janis.or.jp/users/kyodoshi/somokuji-2.htm ＜最終確認：2010年9月20日＞第８７号（１９７９年９月 改訂版２００２年９月） 飢饉災害特集号に「赤沼地震の思い出」とあり。『長野 第８４号～第８７号（昭和５４年３月～９月）』（合本）にあたる。「長野 第８７号」の「赤沼地震の思い出」にはＳ16．7.15とあり、止まった時計が23時45分を指していたとある。先の『防 ...