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Analysis for Effects of Temperature Rise of PV Modules upon Driving Distance of Vehicle Integrated Photovoltaic Electric Vehicles

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Energy and Power Engineering 2024年第4期16卷 131-150页

作者： Masafumi Yamaguchi Yasuyuki Ota Taizo Masuda Christian Thiel Anastasios Tsakalidis Arnulf Jaeger-Waldau Kenji Araki Kensuke Nishioka Tatsuya Takamoto takashi Nakado Kazumi Yamada Tsutomu Tanimoto Yosuke Tomita Yusuke Zushi Kenichi Okumura takashi Mabuchi Akinori Satou Kyotaro Nakamura Ryo Ozaki Nobuaki Kojima Yoshio Ohshita Toyota Technological Institute Nagoya Japan Faculty of Engineering Miyazaki University Miyazaki Japan Toyota Motor Corporation Susono Japan European Commission— Joint Research Centre Ispra Italy Sharp Corporation Nara Japan Toyota Motor Corporation Toyota Japan Nissan Motor Corporation Yokosuka Japan

The development of vehicle integrated photovoltaics-powered electric vehicles (VIPV-EV) significantly reduces CO2 emissions from the transport sector to realize a decarbonized society. Although long-distance driving of VIPV-EV without electricity charging is expected in sunny regions, driving distance of VIPV-EV is affected by climate conditions such as solar irradiation and temperature rise of PV modules. In this paper, detailed analytical results for effects of climate conditions such as solar irradiation and temperature rise of PV modules upon driving distance of the VIPV-EV were presented by using test data for Toyota Prius and Nissan Van demonstration cars installed with high-efficiency InGaP/GaAs/InGaAs 3-junction solar cell modules with a module efficiency of more than 30%. The temperature rise of some PV modules studied in this study was shown to be expressed by some coefficients related to solar irradiation, wind speed and radiative cooling. The potential of VIPV-EV to be deployed in 10 major cities was also analyzed. Although sunshine cities such as Phoenix show the high reduction ratio of driving range with 17% due to temperature rise of VIPV modules, populous cities such as Tokyo show low reduction ratio of 9%. It was also shown in this paper that the difference between the driving distance of VIPV-EV driving in the morning and the afternoon is due to PV modules’ radiative cooling. In addition, the importance of heat dissipation of PV modules and the development of high-efficiency PV modules with better temperature coefficients was suggested in order to expand driving range of VIPV-EV. The effects of air-conditioner usage and partial shading in addition to the effects of temperature rise of VIPV modules were suggested as the other power losses of VIPV-EV.

关键词： Vehicle Integrated Photovoltaics (VIPV) VIPV-Powered Electric Vehicles Driving Distance PV Modules Solar Irradiation Temperature Rise Radiative Cooling

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Artificial oxygen carriers,from nanometer-to micrometer-sized particles,made of hemoglobin composites substituting for red blood cells

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Particuology 2022年第5期20卷 43-55页

作者： takashi Matsuhira Hiromi Sakai Department of Chemistry Nara Medical University840 Shijo-choKashihara 634-8521Japan

Blood transfusions are regarded as the most well-known and frequently performed cell *** current transfusion systems are sophisticated,they cannot be freed from the inherent difficulties that include infection,short shelf life,and blood type *** oxygen carriers produced using hemoglobin(Hb)are designated as Hb-based oxygen carriers(HBOCs),which are anticipated for use as biomaterials that have potential to resolve issues of transfusion by a radical paradigm *** HBOCs,nanometer-sized to micrometer-sized bioparticles having an oxygen-carrying function,are developed for use as substitutes for red blood cells(RBCs).This paper presents an overview of the classification of HBOCs with reference to their histories,preparations,structures,functions,and in vitro and in vivo ***,we give a more detailed introduction of our academic studies of liposome encapsulated Hb,designated as Hb-vesicles(HbV),which mimic the physiologically important corpuscular structure of *** review outlines perennial efforts and approaches to mimic RBC functions through chemical,genetic,and encapsulation *** will provide important insights into the eventual realization of an alternative for RBC transfusion.

关键词： Blood substitutes Cross-linking Hemoglobin(Hb)-based oxygen carriers(HBOCs) Liposome Supramolecular assembly Transfusion alternatives

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Impact of device resistances in the performance of graphene-based terahertz photodetectors

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Frontiers of Optoelectronics 2024年第2期 89-99页

作者： óscar Castelló Sofía M.López Baptista Kenji Watanabe takashi Taniguchi Enrique Diez Jesús Enrique Velázquez-Pérez Yahya M.Meziani José M.Caridad Juan A.Delgado-Notario Department of Applied Physics University of Salamanca Unidad de Excelencia en Luz y Materia Estructurada(LUMES) University of Salamanca Research Center for Electronic and Optical Materials National Institute for Materials Science Research Center for Materials Nanoarchitectonics National Institute for Materials Science Nanotechnology Group USAL–Nanolab University of Salamanca

In recent years, graphene field-effect-transistors(GFETs) have demonstrated an outstanding potential for terahertz(THz) photodetection due to their fast response and high-sensitivity. Such features are essential to enable emerging THz applications, including 6G wireless communications, quantum information, bioimaging and security. However, the overall performance of these photodetectors may be utterly compromised by the impact of internal resistances presented in the device, so-called access or parasitic resistances. In this work, we provide a detailed study of the influence of internal device resistances in the photoresponse of high-mobility dual-gate GFET detectors. Such dual-gate architectures allow us to fine tune(decrease) the internal resistance of the device by an order of magnitude and consequently demonstrate an improved responsivity and noise-equivalent-power values of the photodetector, respectively. Our results can be well understood by a series resistance model, as shown by the excellent agreement found between the experimental data and theoretical calculations. These findings are therefore relevant to understand and improve the overall performance of existing high-mobility graphene photodetectors.

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Light is an Important Limiting Factor for the Vertical Distribution of the Largest Extant Benthic Foraminifer Cycloclypeus carpenteri

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Journal of Earth Science 2022年第6期33卷 1460-1468页

作者： Kazuhiko Fujita Yoji Kanda takashi Hosono Department of Physics and Earth Sciences University of the RyukyusOkinawa903-0213Japan Tropical Biosphere Research Center University of the RyukyusOkinawa903-0213Japan Japan Agency for Marine-Earth Science and Technology(JAMSTEC) Global Oceanographic Data Center(GODAC)Kanagawa236-0001Japan

Cycloclypeus carpenteri is the largest extant benthic foraminifer,dwelling in the deep euphotic zone(a water depth between 60 and 130 m)of the warm oligotrophic Indo-West *** foraminifer harbors diatom endosymbionts and the foraminifer-microalgal association acts like a *** verify that light is an important limiting factor controlling the vertical(depth)distribution of living Cycloclypeus holobionts,their physiological responses to light intensity were examined by short-term metabolic measurements and long-term *** oxygen production(OP)rates measured under different light levels using an oxygen microelectrode indicate that Cycloclypeus holobionts are daily net primary producers adapted to low light levels,with slight photoinhibition(reduced net OP rates relative to a light-saturated rate)over 100μmol photons m^(−2)s^(−1).Long-term growth increments of asexually reproduced juveniles incubated for two months at different light levels ranging from 0 to 100μmol photons m^(−2)s^(−1) show that Cycloclypeus holobionts are adapted to a low light level(∼5μmol photons m^(−2)s^(−1)),but can be acclimatized to a certain low light ranges(<50μmol photons m^(−2)s^(−1)).These experimental results confirm that light is an important environmental gradient affecting the vertical distribution of Cycloclypeus holobionts.

关键词： algal symbiosis diatom large benthic foraminifer oxygen production photosynthesis

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仗剑斩龙的诗人们——中唐诗歌中的龙神与祭祀

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南京师范大学文学院学报 2024年第1期 144-166页

作者：谷口高志陈文辉(译) 日本佐贺大学教育系佐贺县佐贺8408502 吉林外国语大学国际传媒学院吉林长春130117

随着佛教的渗透,在唐代,特别是中唐前后“河伯”被龙神代替,民间的龙神祭祀开始出现在诗文作品中,但其祭祀被定位为“淫祀”的一种。白居易和韩愈在《黑潭龙》《题炭谷湫祠堂》中将龙神的淫祀问题与奸臣、天子权威问题相关联,从中能够... 详细信息

随着佛教的渗透,在唐代,特别是中唐前后“河伯”被龙神代替,民间的龙神祭祀开始出现在诗文作品中,但其祭祀被定位为“淫祀”的一种。白居易和韩愈在《黑潭龙》《题炭谷湫祠堂》中将龙神的淫祀问题与奸臣、天子权威问题相关联,从中能够看出中唐时期诗人们的危机感和问题意识。而从盛唐到中唐,“代表国家安宁的龙”的象征性的崩坍,在杜甫的《奉同郭给事汤东灵湫作》诗作中可以看到。中唐时期洞庭湖水域作为非祭祀对象的恶龙等妖物的栖息地,频繁地出现在士人们的诗文中。水界的混乱,成为士人们心中世界秩序混乱的类比,进而与现实中的奸臣、朝廷权威问题相重合,激发了诗人们“斩龙”“驱龙”的愿望。概而言之,中唐时期诗人们出于自己官僚身份的自我认知以及对朝廷、世界的责任感和自负心,对危及朝廷的淫祀、恶龙等的存在产生了危机感和焦躁感,这种问题意识促使他们将其表现在了诗文作品中。

关键词：龙神祭祀淫祀白居易韩愈

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Limb Stiffness Improvement of the Robot WAREC-1R for a Faster and Stable New Ladder Climbing Gait

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Journal of Bionic Engineering 2023年第1期20卷 57-68页

作者： Xiao Sun Akira Ito takashi Matsuzawa Atsuo Takanishi Department of Mechatronics University of YamanashiYamanashi400-8511Japan Faculty of Science and Engineering Waseda UniversityTokyo162-8480Japan

Ladder climbing is a relatively new but practical locomotion style for robots. Unfortunately, due to their size and weight, ladder climbing by human-sized robots developed so far is struggling with the speedup of ladder climbing motion itself. Therefore, in this paper, a new ladder climbing gait for the robot WAREC-1R is proposed by the authors, which is both faster than the former ones and stable. However, to realize such a gait, a point that has to be taken into consideration is the deformation caused by the self-weight of the robot. To deal with this issue, extra hardware (sensor) and software (position and force control) systems and extra time for sensing and calculation were required. For a complete solution without any complicated systems and time only for deformation compensation, limb stiffness improvement plan by the minimal design change of mechanical parts of the robot is also proposed by the authors, with a thorough study about deformation distribution in the robot. With redesigned parts, ladder climbing experiments by WAREC-1R proved that both the new ladder climbing gait and the limb stiffness improvement are successful, and the reduced deformation is very close to the estimated value as well.

关键词： Ladder climbing Legged robot Bionic robot Gait.Stiffness improvement Finite element analysis

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An impact assessment of the COVID‑19 pandemic on Japanese and US hotel stocks

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Financial Innovation 2023年第1期9卷 2507-2557页

作者： takashi Kanamura Graduate School of Advanced Integrated Studies in Human Survivability(GSAIS) Kyoto UniversityKyotoJapan

This study proposes two new regime-switching volatility models to empirically analyze the impact of the COVID-19 pandemic on hotel stock prices in Japan compared with the US,taking into account the role of stock *** first model is a direct impact model of COVID-19 on hotel stock prices;the analysis finds that infection speed negatively affects Japanese hotel stock prices and shows that the regime continues to switch to high volatility in prices due to COVID-19 until September 2021,unlike US stock *** second model is a hybrid model with COVID-19 and stock market impacts on the hotel stock prices,which can remove the market impacts on regime-switching volatility;this analysis demonstrates that COVID-19 negatively affects hotel stock prices regardless of whether they are in Japan or the *** also observe a transition to a high-volatility regime in hotel stock prices due to COVID-19 until around summer 2021 in both Japan and the *** results suggest that COVID-19 is likely to affect hotel stock prices in general,except for the influence of the stock *** the market influence,COVID-19 directly and/or indirectly affects Japanese hotel stocks through the Japanese stock market,and US hotel stocks have limited impacts from COVID-19 owing to the offset between the influence on hotel stocks and no effect on the stock *** on the results,investors and portfolio managers should be aware that the impact of COVID-19 on hotel stock returns depends on the balance between the direct and indirect effects,and varies from country to country and region to region.

关键词： Hotel industry Asset price volatility COVID-19 Regime-switching Infection speed

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Amelioration of acidic soil using fy Ash for Mine Revegetation in PostMining Land

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International Journal of Coal Science & Technology 2022年第3期9卷 201-206页

作者： Akihiro Hamanaka takashi Sasaoka Hideki Shimada Shinji Matsumoto Department of Earth Resources Engineering Faculty of EngineeringKyushu University819-0395 FukuokaJapan Geological Survey of Japan National Institute of Advanced Industrial Science and Technology(AIST)305-8567 TsukubaJapan

This paper described the use of fy ash for soil amelioration of acidic soils to promote plant *** mining sites,acid sulfate soils/rocks,which contain sulfde minerals(*** FeS_(2)),have appeared as a result of overburden *** excessively acidic condition inhibits plant growth due to the dissolution of harmful elements,such as Al,Fe,and *** ash,an alkaline byproduct of coal combustion generated in thermal power plants is expected to be adopted to ameliorate acidic ***,the mixing ratio of fy ash must be considered because excessive addition of fy ash can have a negative impact on plant growth due to its physical/chemical *** pot trials using Acacia mangium demonstrate the evolution of plant growth with a 5%–10%addition of fy ash into acidic *** the acidic soil has a high potential for metal dissolution,the metal ions leached from the acidic soil are large,making it difcult to improve plant growth due to osmotic and ionic *** work suggests that the efects of fy ash on metal ions leached from the soil have to be considered for the amelioration of acidic soil.

关键词： Acid Soil Coal Ash Metal Accumulation Plant Growth

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Assessment of delayed bleeding after endoscopic submucosal dissection of early-stage gastrointestinal tumors in patients receiving direct oral anticoagulants

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World Journal of Gastroenterology 2023年第19期29卷 2916-2931页

作者： Mitsushige Sugimoto Masaki Murata takashi Kawai Department of Gastroenterological Endoscopy Tokyo Medical University HospitalTokyo 160-0023Japan Department of Gastroenterology National Hospital Organization Kyoto Medical CenterKyoto 612-8555Japan

Delayed bleeding is a major and serious adverse event of endoscopic submucosal dissection(ESD)for early-stage gastrointestinal *** rate of post-ESD bleeding for gastric cancer is higher(around 5%-8%)than that for esophagus,duodenum and colon cancer(around 2%-4%).Although investigations into the risk factors for post-ESD bleeding have identified several procedure-,lesion-,physician-and patient-related factors,use of antithrombotic drugs,especially anticoagulants[direct oral anticoagulants(DOACs)and warfarin],is thought to be the biggest risk factor for post-ESD *** fact,the post-ESD bleeding rate in patients receiving DOACs is 8.7%-20.8%,which is higher than that in patients not receiving ***,because clinical guidelines for management of ESD in patients receiving DOACs differ among countries,it is necessary for endoscopists to identify ways to prevent post-ESD delayed bleeding in clinical *** that the pharmacokinetics(e.g.,plasma DOAC level at both trough and T_(max))and pharmacodynamics(e.g.,anti-factor Xa activity)of DOACs are related to risk of major bleeding,plasma DOAC level and anti-FXa activity may be useful parameters for monitoring the anti-coagulate effect and identifying DOAC patients at higher risk of post-ESD bleeding.

关键词： Direct oral anticoagulants Gastrointestinal tumors Endoscopic submucosal dissection Delayed bleeding Adverse events Anticoagulants

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Enhanced electrical property of graphite/Al_(2)O_(3) composite fabricated by reductive sintering of gel-casted body using cross-linked epoxy polymer

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Journal of Advanced Ceramics 2022年第4期11卷 523-531页

作者： Yoshiaki FUNAHASHI Yunzi XIN Kunihiko KATO Huu Hien NGUYEN takashi SHIRAI Department of Life Science and Applied Chemistry Graduate School of EngineeringNagoya Institute of TechnologyGokiso-choShowa-kuNagoyaAichi 466-8555Japan Advanced Ceramics Research Center Nagoya Institute of TechnologyGokiso-choShowa-kuNagoyaAichi 466-8555Japan

In the present study,graphite/alumina composites are fabricated via reductive sintering of gel-casted green bodies with structurally controlled cross-linked epoxy polymers for the first *** cross-linking degrees of polymers are tuned by the amount ratio of epoxy monomer/polyvinyl alcohol cross-linker utilized in gel-casting *** electrical properties with respect to 5-fold enhanced electrical conductivity and 2-fold higher carrier mobility are successfully achieved in graphite/alumina composite fabricated from cross-linked epoxy polymer,whose phenomenon is attributed to the excellent conductive path in ceramic matrix established by highly uniform network with improved graphitization degree.

关键词： ceramic composite gel-casting reductive sintering cross-linking electrical property graphitization

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