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タイトル: Evaluation of single silicon vacancy centers in nanodiamonds created by ion implantation at cryogenic temperatures著者: Shimazaki, Konosuke; Suzuki, Kazuki; Sakamoto, Kengo; Okashiro, Yudai; Abe, Hiroshi; Ohshima, Takeshi; Takashima, Hideaki; Takeuchi, Shigeki抄録: Silicon vacancy (SiV) centers in diamonds have attracted much attention because of their stability and narrow emission linewidth, and are promising for applications in quantum information technology. SiV-center-encapsulated nanodiamonds have also attracted much attention because of their potential to be coupled to various photonic devices. One efficient way to fabricate nanodiamonds that contain SiV centers is Si ion implantation into nanodiamonds. However, the evaluation of a single SiV center in a nanodiamond produced by this method at low temperatures has not been performed. In this study, we report on the optical properties of a single SiV center in a nanodiamond produced by ion implantation at cryogeni ...

タイトル: Construction of robust superhydrophobic surfaces with electrothermal, photothermal properties using simple spraying method著者: Chang, Chengbi; Noh, Insub; Zhou, Nan; Jeon, Jihun; Wang, Yanbin; Kim, Hyung Do; Liu, Qingqing; Ohkita, Hideo; Tao, Xinlei; Wang, Biaobing抄録: In this study, robust superhydrophobic surfaces with electrothermal, photothermal properties were fabricated by simple spraying method. In more detail, multiwall carbon nanotube (MWCNT) and silica were deliberately sprayed onto the wet poly(amide imide) (PAI) surface to construct intensive conductive network with hierarchical porous structure. The composite coating showed superhydrophobic with a water contact angle (CA) of greater than 155⁰ and sliding angle (SA) of lower than 5⁰, conductivity of approaching to 1 kΩ sq⁻¹. As expected, the composite coating possessed passive anti-icing property owing to its high CA, and the freezing time at -20 °C was obviously delayed from 150 to 600 s. On th ...

タイトル: Comparison of a Novel Head-Mounted Objective Auto-perimetry (Gaze Analyzing Perimeter) and Humphrey Field Analyzer著者: Miyake, Masahiro; Mori, Yuki; Wada, Saori; Yamada, Kazutaka; Shiraishi, Ryo; Numa, Shogo; Suda, Kenji; Kameda, Takanori; Ikeda, Hanako; Akagi, Tadamichi; Aibara, Teruo; Tamura, Hiroshi; Tsujikawa, Akitaka抄録: Purpose: To evaluate the agreement between 24-2 visual field (VF) test results obtained using the gaze analyzing perimeter (GAP; Findex) and the Humphrey field analyzer (HFA; Carl Zeiss Meditec). Design: Cross-sectional study. Participants: Patients underwent HFA 24-2 for suspected or confirmed VF loss and were treated at the Kyoto University Hospital between December 2022 and July 2023. Methods: Patients underwent consecutive VF tests on the same eye using HFA and GAP 24-2 tests. Bland–Altman analysis was used to compare GAP and HFA results. Examination points where the sensitivity measured using GAP was ≥ 10 dB higher than that measured u ...

タイトル: Therapeutic potential of human induced pluripotent stem cell-derived cardiac tissue in an ischemic model with unloaded condition mimicking left ventricular assist device著者: Heima, Daisuke; Takeda, Masafumi; Tabata, Yasuhiko; Minatoya, Kenji; Yamashita, Jun K.; Masumoto, Hidetoshi抄録: Objective: This study aimed to explore the therapeutic potential of human induced pluripotent stem cell (hiPSC)-derived cardiac tissues (HiCTs) in the emerging approach of bridge to recovery for severe heart failure with ventricular assist devices. We used a rat model of heterotopic heart transplantation (HTx) to mimic ventricular assist device support and heart unloading. Methods: HiCTs were created by inserting gelatin hydrogel microspheres between cell sheets made from hiPSC-derived cardiovascular cells. Male athymic nude rats underwent myocardial infarction (MI) and were divided into the following groups: MI (loaded, untreated control), MI + HTx (unloaded, untreated control), MI + ...

タイトル: Feasibility of Narrow-Spectrum Antimicrobial Agents for Post-Operative Intra-Abdominal Infections After Gastrectomy著者: Goto, Kentaro; Hata, Hiroaki; Degawa, Kanako; Nakanishi, Yasutaka; Obama, Kazutaka抄録: Introduction: Recently, antimicrobial resistance has received considerable attention. Broad-spectrum antimicrobial agents are recommended as the initial therapy for post-operative intra-abdominal infections. However, at our institution, we have adopted a tactic of initially treating post-operative intra-abdominal complications with relatively narrow-spectrum antimicrobial agents, such as second-generation cephalosporins. In the present study, we aimed to retrospectively analyze the use of antimicrobial agents and the resulting treatment outcomes in patients with intra-abdominal complications after gastrectomy at our facility. Methods: We conducted a retrospective observational study of patients treated with antibiotic agents for intra-abdominal infectious complic ...

タイトル: A double‐layer Jacobi method for partial differential equation‐constrained nonlinear model predictive control著者: Deng, Haoyang; Ohtsuka, Toshiyuki抄録: This paper presents a real-time optimization method for nonlinear model predictive control (NMPC) of systems governed by partial differential equations (PDEs). The NMPC problem to be solved is formulated by discretizing the PDE system in space and time by using the finite difference method. The proposed method is called the double-layer Jacobi method, which exploits both the spatial and temporal sparsities of the PDE-constrained NMPC problem. In the upper layer, the NMPC problem is solved by ignoring the temporal couplings of either the state or costate (Lagrange multiplier corresponding to the state equation) equations so that the spatial sparsity is preserved. The lower-layer Jacobi method is a linear solver dedicated to PDE-constrained NMPC problems by exploiting the spatial sparsity. Convergence analysis indi ...

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