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Demonstration of Automatic Impedance-Matching and Constant Power Feeding to and Electric Helicopter via Magnetic Resonance Coupling

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Wireless Engineering and Technology 2014年第3期5卷 45-53页

作者： Masato Yamakawa kohei shimamura Kimiya Komurasaki Hiroyuki Koizumi Department of Advanced Energy The University of Tokyo Chiba Japan Department of Aeronautics and Astronautics The University of Tokyo Tokyo Japan Department of Engineering Mechanics and Energy University of Tsukuba Ibaraki Japan Research Center for Advanced Science and Technology The University of Tokyo Tokyo Japan

Wireless power transfer (WPT) from a transmitter resonator on the ground to an electrically powered miniature heli-copter was attempted to demonstrate WPT using magnetic resonance coupling to an object moving in 3D space. The transmission efficiency was optimized by automatic impedance matching for different flight attitudes: a maximum flight altitude of 590 mm was achieved. Furthermore, an estimation method of transmission efficiency using only the properties on the transmitter side was proposed, with transmission power regulated as constant against the change in the coupling coefficient.

关键词： Wireless Power Transfer Power Regulation Resonator Flying Object

Immunotherapy for esophageal cancer:Where are we now and where can we go

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World Journal of Gastroenterology 2024年第19期30卷 2496-2501页

作者： Yoshiaki Shoji Kazuo Koyanagi kohei Kanamori kohei Tajima Mika Ogimi Yamato Ninomiya Miho Yamamoto Akihito Kazuno Kazuhito Nabeshima Takayuki Nishi Masaki Mori Department of Gastroenterological Surgery Tokai University School of MedicineKanagawa 259-1193Japan

Immune checkpoint inhibitor therapy has dramatically improved patient prognosis,and thereby transformed the treatment in various cancer types including esophageal squamous cell carcinoma(ESCC)in the past *** antibodies that selectively inhibit programmed cell death-1(PD-1)activity has now become standard of care in the treatment of ESCC in metastatic settings,and has a high expectation to provide clinical benefit during perioperative ***,anti-cytotoxic T-lymphocyte–associated protein 4(CTLA-4)monoclonal antibody has also been approved in the treatment of recurrent/metastatic ESCC in combination with anti-PD-1 *** understanding of the existing evidence of immune-based treatments for ESCC,as well as recent clinical trials on various combinations with chemotherapy for different clinical settings including neoadjuvant,adjuvant,and metastatic diseases,may provide future prospects of ESCC treatment for better patient outcomes.

关键词： Esophageal cancer Immunotherapy Immune checkpoint inhibitor Programmed cell death-1 Anti-cytotoxic T-lymphocyte-associated protein 4 Neoadjuvant therapy Adjuvant therapy Clinical trials Combination therapy

Comparison of incidence of acute kidney injury after robot-assisted radical prostatectomy with that after open retropubic and extraperitoneal laparoscopic radical prostatectomies in patients with prostate cancer

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CURRENT UROLOGY 2024年第2期18卷 139-143页

作者： Sato, Shunsuke Tanaka, Toshiaki Maehana, Takeshi Hashimoto, kohei Kobayashi, Ko Masumori, Naoya Sapporo Med Univ Dept Urol S-1W-16Chuo ku Sapporo 0608543 Japan

Background: We retrospectively evaluated the postoperative renal function in patients who had undergone radical prostatectomy to compare the incidences of postoperative acute kidney injury (AKI) among the patients who had undergone robot-assisted radical prostatectomy (RARP), retropubic radical prostatectomy (RRP), and extraperitoneal laparoscopic radical prostatectomy (exLRP). Materials and methods: Patients with prostate cancer who had undergone radical prostatectomy at our institution between 2008 and 2014 were included. Robot-assisted radical prostatectomy was performed using an intraperitoneal approach in a 25-degree Trendelenburg position, whereas other procedures were performed with the patient in the supine position. We evaluated the serum creatinine levels and estimated glomerular filtration rates immediately after surgery and on postoperative day 1. We evaluated the incidence of AKI after prostatectomy using the Acute Kidney Injury Network criteria of the Kidney Disease: Improving Global Outcomes guidelines. Results: A total of 150 consecutive patients were included, with each of the 3 groups (RARP, RRP, and exLRP) comprising 50 patients. Postoperative AKI was observed in 15 (30.0%), 1 (2.0%), and 3 (6.0%) patients in the RARP, RRP, and exLRP groups, respectively. Stage 1 AKI was observed in all the patients except one. The incidence of AKI in RARP group was significantly higher than that in the other groups (p < 0.001). In the RARP group, the serum creatinine level was significantly elevated immediately after the surgery; however, it returned to baseline on postoperative day 1. Surgical procedures were the only independent factor associated with AKI incidence. Conclusions: This study suggest that compared with RRP and exLRP, RARP is associated with a higher incidence of postoperative AKI, although most patients recover rapidly. Intra-abdominal pneumoperitoneum may contribute to AKI onset.

关键词： Acute kidney injury Renal function Prostatectomy ACUTE-RENAL-FAILURE PERIOPERATIVE OUTCOMES RISK-FACTORS MORTALITY SURGERY PNEUMOPERITONEUM

Thermally activated delayed fluorescence carbazole-triazine dendrimer with bulky substituents

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Aggregate

Aggregate 2024年第1期5卷 236-243页

作者： Hiroki Ikebe kohei Nakao Eri Hisamura Minori Furukori Yasuo Nakayama Takuya Hosokai Minlang Yang Guanting Liu Takuma Yasuda Ken Albrecht Interdisciplinary Graduate School of Engineering Sciences Kyushu UniversityFukuokaJapan Institute for Materials Chemistry and Engineering Kyushu UniversityKasugaJapan Department of Pure and Applied Chemistry Graduate School of Science and TechnologyTokyo University of ScienceNodaChibaJapan National Metrology Institute of Japan(NMIJ) National Institute of Advanced Industrial Science and Technology(AIST)TsukubaIbarakiJapan Institute for Advanced Study Kyushu UniversityNishi-kuFukuokaJapan

Carbazole-triazine dendrimers with a bulky terminal substituent were synthesized,and the thermally activated delayed fluorescence(TADF)property was *** to unsubstituted carbazole dendrimers,dendrimers with bulky terminal substituents showed comparable to better photoluminescence quantum yields(PLQY)in neat ***(PF)-substituted dendrimers showed the highest PLQY of 81%,a smallΔEst of 0.06 eV,and the fastest reverse intersystem crossing(RISC)rate of∼1×10^(5 )s^(−1) compared to other *** measurements of dendrimers and dendrons(fragments)indicate that the close proximity of the triplet energy of phenylfluorene-substituted carbazole dendrons(^(3)LE)to that of phenylfluorene-substituted dendrimers(^(1)CT,^(3)CT)contributes to RISC promotion and improves TADF *** modification fine-tunes the energy level and suppresses intermolecular interactions,and this study provides a guideline for designing efficient solution-processable and non-doped TADF materials.

关键词： dendrimer OLED TADF 1 INTRODUCTION Thermally activated delayed fluorescence(TADF)materials which are inexpensive and highly efficient alternatives to fluorescent

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未来气候条件下蒙古草原植被的预测分布

Journal of Plant Ecology 2024年第3期17卷 16-27页

作者： kohei Suzuki Ikutaro Tsuyama Radnaakhand Tungalag Amartuvshin Narantsetseg Tsagaanbandi Tsendeekhuu Masato Shinoda Norikazu Yamanaka Takashi Kamijo Department of Regional Regeneration Science Faculty of Regional Environment ScienceTokyo University of AgricultureTokyo 156-8502Japan Hokkaido Research Center Forestry and Forest Products Research InstituteHokkaido 062-8516Japan Department ofBiology School of Arts and SciencesNational University of MongoliaUlaanbaatar 210646Mongolia Botanic Garden and ResearchInstitute Mongolian Academy of ScienceUlaanbaatar 51Mongolia Department of Earth and Environmental Sciences GraduateSchool of Environmental StudiesNagoya UniversityNagoya 464-8601Japan Arid Land Research Center Tottori UniversityTottori680-0001Japan Faculty of Life and Environmental Sciences University of TsukubaIbaraki 305-8572Japan

蒙古牧民家庭通过适应当地植被分布的特点来维持牲畜的健康状况。因此,预测未来植被变化对于稳定的牲畜放牧和可持续的草原利用至关重要。本研究基于前期研究获得的植被数据预测了2081年至2100年间草原植被,尤其是沙漠草原、草原和草甸... 详细信息

蒙古牧民家庭通过适应当地植被分布的特点来维持牲畜的健康状况。因此,预测未来植被变化对于稳定的牲畜放牧和可持续的草原利用至关重要。本研究基于前期研究获得的植被数据预测了2081年至2100年间草原植被,尤其是沙漠草原、草原和草甸草原的分布范围。我们首先基于在蒙古(43–50°N,87–119°E)收集的草原植被数据(2012至2016年,278个样地)划分了不同的群落类型。其次,采用最大熵(MaxEnt)模型进行物种分布建模,其中以荒漠草原、草原和草甸草原的分布数据作为目标变量,使用WorldClim的生物气候数据作为解释变量。最后,采用WorldClim提供的CMIP6下缩放的未来气候预测数据进行未来预测。结果发现,荒漠草原、草原和草甸草原模型的曲线下面积值分别为0.850、0.847和0.873。根据所有情景和所有群落的气候变化,适宜栖息地预计将缩小。潜在适宜区域减少的程度在草甸草原群落中最为显著。上述结果表明,未来气候变化情景下草甸草原群落将转变为草原群落。

关键词：气候变化群落最大熵物种分布建模草原 WorldClim

Vernacular与日本民俗学——叙述当代学术史的尝试

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民俗研究 2024年第3期 104-111,159页

作者：岛村恭则周丹(译) 关西学院大学兵库西宫6620891

近年来,vernacular作为英语民俗学理论中的重要概念,已涌入日本的民俗学领域,并逐步推动民俗学理论更新。在这个过程中,我提出从“反霸权”和“反启蒙”的角度重新定义“民俗学”和“民俗”。这并不是对vernacular概念直接、机械地引用... 详细信息

近年来,vernacular作为英语民俗学理论中的重要概念,已涌入日本的民俗学领域,并逐步推动民俗学理论更新。在这个过程中,我提出从“反霸权”和“反启蒙”的角度重新定义“民俗学”和“民俗”。这并不是对vernacular概念直接、机械地引用,而是根植于自身现实的理论尝试。结合当代学术史和个人实践经验,vernacular概念的嵌入,将有助于推动日本民俗学的学科建设与更新,及其相关内在理论的构建。

关键词： vernacular 反霸权反启蒙当代学术史

Which characteristics are associated with changes in medication status for lower urinary tract symptoms among patients with prostate cancer receiving external beam radiotherapy?

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CURRENT UROLOGY 2024年第2期18卷 122-127页

作者： Kyoda, Yuki Hashimoto, kohei Takahashi, Atsushi Maehana, Takeshi Tachikawa, Kimihito Muranaka, Takashi Kato, Shuichi Kurisu, Tomoyo Fukuta, Fumimasa Kirisawa, Takahiro Okada, Manabu Kobayashi, Ko Tanaka, Toshiaki Hinotsu, Shiro Masumori, Naoya Sapporo Med Univ Sch Med Dept Urol S-1W-16Chuo Ku Sapporo 0608543 Japan Hakodate Goryoukaku Hosp Dept Urol Hakodate Japan Muroran City Gen Hosp Dept Urol Muroran Japan NTT East Sapporo Hosp Dept Urol Sapporo Japan Sunagawa City Med Ctr Dept Urol Sunagawa Japan Oji Gen Hosp Dept Urol Tomakomai Japan Steel Mem Muroran Hosp Dept Urol Muroran Japan Obihiro Kyokai Hosp Dept Urol Obihiro Japan Sapporo Med Univ Sch Med Dept Med Stat Sapporo Japan

BackgroundWe clarified the predictive factors for changes in the status of medications for lower urinary tract symptoms (LUTS) 2 years after local radiotherapy for nonmetastatic prostate cancer. Materials and methodsWe retrospectively included patients who underwent local external radiotherapy for nonmetastatic prostate cancer in 8 institutions between April 2001 and March 2016. Patients were divided into the medication and no-medication group based on the use of drugs for LUTS before radiotherapy. We defined improvement of LUTS as when the patient did not require medication for LUTS at 24 months after radiotherapy in the medication group and as deterioration when medication was required in the no-medication group. Logistic regression analysis was used to evaluate predictive factors for changes in medication status. ResultsAltogether, 505 patients were divided into a no-medication group (n = 352) and a medication group (n = 153). The number of patients with deterioration and improvement in LUTS was 49 (14%) and 36 (23%), respectively. In the multivariate analysis, the predictive variables for deterioration were the International Prostate Symptom Score (>= 8; odds ratio [OR], 2.21; p = 0.014) and the biopsy Gleason score (= 50%; OR, 2.530; p = 0.027) in the medication group. ConclusionsThese predictive factors for changes in the status of medications for LUTS at 2 years after external radiotherapy may help determine the definitive therapy for nonmetastatic prostate cancer.

关键词： Prostate cancer Radiotherapy Lower urinary tract symptoms Medications ANDROGEN DEPRIVATION THERAPY QUALITY-OF-LIFE RADIATION VOLUME MEN TOXICITY RELIEF

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民俗学与风俗学及考现学

文化遗产 2024年第2期 109-117页

作者： [日]岛村恭则魏金美(译) 日本关西学院大学社会学部东南大学外国语学院日语系江苏南京210096

第二次世界大战后,认为“民俗”是“不易变化的事象”“风俗”是“容易变化的事象”的观点在日本传播开来。在这种二分法的理解中,前者被解释为“民俗学”,后者被解释为“风俗学”和“考现学”。本文将民俗等同于vernacular,并将其定义... 详细信息

第二次世界大战后,认为“民俗”是“不易变化的事象”“风俗”是“容易变化的事象”的观点在日本传播开来。在这种二分法的理解中,前者被解释为“民俗学”,后者被解释为“风俗学”和“考现学”。本文将民俗等同于vernacular,并将其定义为“在共享某种社会语境的群体中,从某个个人的生世界里产生并活化的经验、知识、表现。特别是我们能从中发现,或预期能从中发现与霸权主义、普世主义、主流和中心的立场相悖的意识、感情、感觉。”在此,“不易变化的事象”及“容易变化的事象”都可以被视作vernacular。

关键词：民俗学 vernacular 民俗与风俗风俗学考现学

Property of critical excitation for moment-resisting frames subjected to horizontal and vertical simultaneous ground motions

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第11期10卷 1561-1572页

作者： kohei FUJITA Izuru TAKEWAKI Department of Urban and Environmental Engineering Graduate School of Engineering Kyoto University

It has often been reported that, when building structures are subjected to near-fault earthquake ground motions, horizontal and vertical impulsive inputs may cause critical damage during the first few seconds. In practical design of building structures, however, the safety check, taking into account the effect of multi-component ground motions, is hardly conducted except the design of important structures such as high-rise buildings and nuclear power plants. Ftirthel＇more, it is not clear how the correlation of multi-component ground motions influences the actual safety of structures. In this paper, the detailed property of critical excitation is discussed in association with the relationship between the characteristics of ground motions and those of structures. The properties of various auto power spectral density （PSD） functions of the horizontal and vertical ground motions are investigated, and those of the critical cross PSD function of these two-directional ground motions are found by a devised algorithm in a feasible complex plane. A closed-form expression is derived from the critical relation of the auto PSD functions of the simultaneous inputs. This critical excitation method provides us with a new approach for earthquake-resistant design against the possible future earthquake which causes the critical damages to buildings.

关键词： Critical excitation Multi-component ground input Critical cross spectrum Coherency Simultaneous input