检索结果-南通市图书馆

老年心脏病学杂志:英文版 2023年第9期20卷 693-696页

作者： koji Takahashi Nobuhisa Yamamura Mako Yoshino Daijiro Enomoto Hiroe Morioka Shigeki Uemura Takafumi Okura Tomoki Sakaue Shuntaro Ikeda Department of Community Emergency Medicine Ehime University Graduate School of MedicineEhimeJapan Department of Cardiology Yawatahama City General HospitalEhimeJapan Department of Clinical Pathology Yawatahama City General HospitalEhimeJapan

Aslanger’s sign,also known as the arterial pulse tapping artifact or electromechanical association artifact,is an electrocardiographic artifact caused by arterial pulsation at the site where the limb leads of the standard 12-lead electrocardiogram near the radial or posterior tibial arteries are positioned,particularly in hyperdynamic states.[1–8]It occurs in every cardiac cycle with a constant coupling interval between the QRS complex and *** synchronization with the underlying heart rhythm makes it less likely to be recognized as an artifact compared to unsynchronized artifacts,such as those caused by limb movement and inadequate contact between the electrode and skin.[1,2,7,8]Almost all reported cases of Aslanger’s sign exhibit an unusual waveform morphology in all 12 leads except one of the standard 12-lead *** sign is often confused with an electrocardiographic finding commonly observed during acute coronary events.

关键词： electrocardiogram arterial likely

Numerical study on tidal currents and seawater exchange in the Benoa Bay, Bali, Indonesia

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2014年第3期33卷 90-100页

作者： HENDRAWAN I Gede ASAI koji Department of Marine Sciences Faculty of Marine Sciences and Fisheries Udayana University Department of Civil and Environmental Engineering Yamaguchi University

A three-dimensional （3-D） finite volume coastal ocean model （FVCOM） was used for the study of water cir culation and seawater exchange in the Benoa Bay, Bali Island. The M2 tidal component was forced in open boundary and discharge from six rivers was included in the numerical calculation. The M2 tidal elevation produced by the FVCOM has a good agreement with the observation data. The M2 tidal current is also suc cessfully calculated under the ebb tide and flood tide conditions. The non-linear M2 tidal residual current was produced by the coastline geometry, especially surrounding the narrow strait between the Serangan Is- land and the Benoa Peninsula. The tidal residual current also generated two small eddies within the bay and one small eddy in the bay mouth. The salinity distribution influenced by river discharge could be success- fully calculated, where the numerical calculation and the observation results have a good correlation （r2） of 0.75. Finally in order to examine the seawater exchange in the Benoa Bay, the Lagrangian particle tracking method and calculation of residence time are applied. The mechanism of particle transport to the flushing of seawater is depicted clearly by both methods.

关键词： FVCOM M2 tidal current M2 residual current salinity seawater exchange

High-accuracy same-beam VLBI observations using Shanghai and Urumqi telescopes

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2009年第10期52卷 1858-1866页

作者： KIKUCHI Fuyuhiko KAMATA Shun'ichi MATSUMOTO koji HANADA Hideo National Astronomical Observatory of Japan Tokyo University

The same-beam VLBI observations of Rstar and Vstar,which were two small satellites of Japanese lunar mission,SELENE,were successfully performed by using Shanghai and Urumqi 25-m telescopes. When the separation angle between Rstar and Vstar was less than 0.1 deg,the differential phase delay of the X-band signals between Rstar and Vstar on Shanghai-Urumqi baseline was obtained with a very small error of 0.15 mm rms,which was reduced by 1-2 order compared with the former VLBI results. When the separation angle was less than 0.56 deg,the differential phase delay of the S-band signals was also obtained with a very small error of several mm rms. The orbit determination for Rstar and Vstar was performed,and the accuracy was improved to a level of several meters by using VLBI and Doppler data. The high-accuracy same-beam differential VLBI technique is very useful in orbit determination for a spacecraft,and will be used in orbit determination for Mars missions of China Yinghuo-1 and Russia Phobos-grunt.

关键词： same-beam differential VLBI phase delay precise orbit determination

Phase-mediated cobalt phosphide with unique core-shell architecture serving as efficient and bifunctional electrocatalyst for hydrogen evolution and oxygen reduction reaction

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第8期33卷 3752-3756页

作者： Junsheng Chen Jianfeng Huang Hai Wang Weihang Feng Tianmi Luo Yuzhu Hu Chengke Yuan Liyun Cao Yanni Jie koji Kajiyoshi Yongqiang Feng School of Material Science and Engineering International S&T Cooperation Foundation of Shaanxi ProvinceXi'an Key Laboratory of Green Manufacture of Ceramic MaterialsShaanxi University of Science and TechnologyXi'an 710021China Kochi University Research Laboratory of Hydrothermal ChemistryKochi 780-8520Japan

Hydrogen evolution reaction(HER)and oxygen reduction reaction(ORR)have been considered as two critical processes in the field of electrocatalytic water-splitting for hydrogen production and fuel ***,the sluggish reaction kinetics of HER and ORR required efficient electrocatalyst such as Pt to promote such *** metal phosphides(TMPs)exhibit great potential to replace noble metal electrocatalysts to accelerate HER and ORR due to their high activity and easy ***,a highly-efficient bifunctional CoP electrocatalyst for HER and ORR,featuring a unique core-shell structure decorated on nitrogen-doped carbon matrix was designed and constructed via etching a cobalt-based zeolitic imidazolate framework(ZIF-67)with phytic acid(PA)followed by pyrolysis treatment(PA-ZIF-67-900).Experimental results revealed that the pure-phase single-crystalline Co P exhibited outstanding electrocatalytic performance in HER and ORR,superior to Co(PO_(3))_(2) in PA-ZIF-67-700,hybrid phase of Co(PO_(3))_(2) and CoP in PA-ZIF-67-800 and Co_(2)P-doped CoP in *** reach the current density of 10 mA/cm^(2)the as-synthesized Co P required an overpotential of 120 m V for HER in 1 mol/L KOH and half-wave potential of 0.85 V in O_(2)-saturated 0.1 mol/L *** work present new clue for construction of efficient and bifunctional electrocatalyst in the field of energy conversion and storage.

关键词： Electrocatalyst Hydrogen evolution reaction Oxygen reduction reaction Transitional metal phosphide CoP

Analysis of molten metal spreading and solidification behaviors utilizing moving particle full-implicit method

在线全文

学校读者我要写书评

暂无评论

Frontiers in Energy 2021年第4期15卷 959-973页

作者： Ryo YOKOYAMA Masahiro KONDO Shunichi SUZUKI koji OKAMOTO Department of Nuclear Engineering and Management The University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan Research Center for Computational Design of Advanced Functional materials(CD-FMat) Department of Materials and ChemistryNational Institute of Advanced Industrial Science and Technology(AIST)Central 21-1-1UmezonoTsukubaIbaraki 305-8568Japan Institute of Engineering Innovation School of EngineeringThe University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan Nuclear Professional School The University of Tokyo2-22 ShirakataTokai-muraIbaraki 319-1188Japan

To retrieve the fuel debris in Fukushima Daiichi Nuclear Power Plants(1F),it is essential to infer the fuel debris *** particular,the molten metal spreading behavior is one of the vital phenomena in nuclear severe accidents because it determines the initial condition for further accident scenarios such as molten core concrete interaction(MCCI).In this study,the fundamental molten metal spreading experiments were performed with different outlet diameters and sample amounts to investigate the effect of the outlet for spreading-solidification *** the numerical analysis,the moving particle full-implicit method(MPFI),which is one of the particle methods,was applied to simulate the spreading *** the MPFI framework,the melting-solidification model including heat transfer,radiation heat loss,phase change,and solid fraction-dependent viscosity was developed and *** addition,the difference in the spreading and solidification behavior due to the outlet diameters was reproduced in the *** simulation results reveal the detailed solidification procedure during the molten metal *** is found that the viscosity change and the solid fraction change during the spreading are key factors for the free surface condition and solidified ***,it is suggested that the MPFI method has the potential to simulate the actual nuclear melt-down phenomena in the future.

关键词： molten metal spreading solidification particle method severe accident fuel debris decommissioning

Lattice Boltzmann Simulations of Water Transport from the Gas Diffusion Layer to the Gas Channel in PEFC

在线全文

学校读者我要写书评

暂无评论

Communications in Computational Physics 2011年第5期9卷 1206-1218页

作者： koji Moriyama Takaji Inamuro Fundamental Research Center Honda R&D Co.Ltd.Saitama 351-0193Japan Department of Aeronautics and Astronautics Graduate School of EngineeringKyoto UniversityKyoto 606-8501Japan Advanced Research Institute of Fluid Science and Engineering Graduate School of EngineeringKyoto UniversityKyoto 606-8501Japan

Water management is a key to ensuring high performance and durability of polymer electrolyte fuel cell(PEFC),and it is important to understand the behavior of liquid water in *** this study,the two-phase lattice Boltzmann method is applied to the simulations of water discharge from gas diffusion layers(GDL)to gas *** GDL is porous media composed of carbon fibers with hydrophobic treatment,and the gas channels are hydrophilic micro-scale *** the simulations,arbitrarily generated porous materials are used as the structures of the *** investigate the effects of solid surface wettabilities on water distribution in the gas channels and the ***,the results of X-ray computed tomography images in the operating PEFC are compared with the numerical simulations,and the mechanism of the water transport in PEFC is considered.

关键词： Two-phase lattice Boltzmann method polymer electrolyte fuel cell X-ray CT imaging gas diffusion layer

Tourist preferences for agricultural landscapes:a case study of terraced paddy fields in Noto Peninsula,Japan

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Mountain Science 2016年第10期13卷 1880-1892页

作者： CHEN Bixia QIU Zhenmian NAKAMURA koji Faculty of Agriculture University of the Ryukyus1 SenbaruNishihara TownOkinawa Prefecture903-0213Japan Fujian Normal University Fuzhou 350108China Kanazawa University Kanazawa CityIshikawa Prefecture920-1192Japan

Many agricultural landscapes have been formed through the interaction and co-evolution of nature and people, and represent the living landscapes shaped over time through intensive and continuous human cultivation. Terraced paddy fields are being re-evaluated to take into account the multiple functions they fill beyond only rice cultivation, particularly their contribution to the national biodiversity strategy of Japan. Since the 1990 s, terraced paddy fields have been considered a representative cultural landscape of Japan and, at the same time, multi-stakeholder conservation activities have been conducted throughout Japan to reverse the increasing abandonment of terraces. Shiroyone Senmaida is an outstanding cultural landscape and a major tourist attraction in Noto Peninsula, Ishikawa Prefecture, which was designated through an initiative by the Food and Agriculture Organization(FAO) as a Globally Important Agricultural Heritage Systems(GIAHS) pilot site in 2011. It is important to clarify tourist preference for terraced paddy field landscapes to contribute to future policy making toward improved agricultural landscape conservation. A key finding of this study is that tourists visiting toenjoy the agricultural landscape are also concerned on the sustainability of the farming methods and preferred to maintain the naturalness of the landscape. Respondents with higher educational levels and greater concern for the biological and traditional farming knowledge aspects of the rice terraces were also more inclined to favor sustainable farming practices. Tourists preferred to maintain the naturalness and rurality of the agricultural landscape, and indicated that construction of excessive tourist facilities would cause the landscape to deteriorate. It was suggested that the local community and surroundings, including rural settlements, hills, and forests, should also be conserved together with the scenic terrace.

关键词： Agricultural landscape Landscape aesthetics Landscape naturalness Terraced land Traditional farming Tourist preference

Model Analysis of Radar Echo Split Observed in an Artificial Cloud Seeding Experiment

在线全文

学校读者我要写书评

暂无评论

Journal of Meteorological Research 2016年第3期30卷 386-400页

作者： MASAKI Shimada KIKURO Tomine koji Nishiyama Department of Earth and Ocean Sciences National Defense Academy Faculty of Engineering Kyushu University

An artificial cloud seeding experiment was performed over the Japan Sea in winter to show how massive seeding could be effective to mitigate heavy snowfall *** results showed that 20 min after cloud seeding,a portion of the radar echo beneath the seeding track was weakened to divide the radar echo into two *** order to analyze the results,a numerical simulation was conducted by using the Weather Research and Forecasting model verion *** this simulation,the seeding effects were represented as phenomena capable of changing rain particles by accreting cloud ice and snow to form graupel particles and by changing cloud liquid water to snow *** graupel particles fell rapidly,thus temporarily intensifying the rainfall,which subsequently ***,the weakened radar echo in the field experiment is deemed to have been caused by the increase in rapidly falling graupel particles.

关键词： heavy snowfall artificial cloud seeding numerical experiment

Impact of endothelial nitric oxide synthase activation on accelerated liver regeneration in a rat ALPPS model

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2023年第5期29卷 867-878页

作者： Hitoshi Masuo Akira Shimizu Hiroaki Motoyama koji Kubota Tsuyoshi Notake Takahiro Yoshizawa Kiyotaka Hosoda Koya Yasukawa Akira Kobayashi Yuji Soejima Division of Gastroenterological Hepato-Biliary-PancreaticTransplantation and Pediatric SurgeryDepartment of SurgeryShinshu University School of MedicineMatsumoto 390-8621Japan

BACKGROUND Although the associating liver partition and portal vein ligation for staged hepatectomy(ALPPS)induces more rapid liver regeneration than portal vein embolization,the mechanism remains *** To assess the influence of inflammatory cytokines and endothelial nitric oxide synthase(eNOS)activation on liver regeneration in *** The future liver remnant/body weight(FLR/BW)ratio,hepatocyte proliferation,inflammatory cytokine expression,and activation of the Akt-eNOS pathway were evaluated in rat ALPPS and portal vein ligation(PVL)*** proliferation was assessed based on Ki-67 expression,which was confirmed using *** serum concentrations of inflammatory cytokines were measured using enzyme linked immune-solvent *** Akt-eNOS pathway was assessed using western *** explore the role of inflammatory cytokines and NO,Kupffer cell inhibitor gadolinium chloride(GdCl3),NOS inhibitor N-nitro-arginine methyl ester(L-NAME),and NO enhancer molsidomine were administered *** The ALPPS group showed significant FLR regeneration(FLR/BW:1.60%±0.08%,P<0.05)compared with that observed in the PVL group(1.33%±0.11%)48 h after *** the ALPPS group,serum interleukin-6 expression was suppressed using GdCl3 to the same extent as that in the PVL ***,the FLR/BW ratio and Ki-67 labeling index were significantly higher in the ALPPS group administered GdCl3(1.72%±0.19%,P<0.05;22.25%±1.30%,P<0.05)than in the PVL group(1.33%±0.11%and 12.78%±1.55%,respectively).Phospho-Akt Ser473 and phospho-eNOS Ser1177 levels were enhanced in the ALPPS group compared with those in the PVL *** was no difference between the ALPPS group treated with L-NAME and the PVL group in the FLR/BW ratio and Ki-67 labeling *** the PVL group treated with molsidomine,the FLR/BW ratio and Ki-67 labeling index increased to the same level as in the ALPPS *** Early induction of inflammatory cytokines may n

关键词： Hepatectomy Nitric oxide Liver regeneration Cytokines NG-Nitroarginine methyl ester Molsidomine

Investigation of Inspiratory Circuit Condensation due to Room Temperature in a Heated Humidifier during Mechanical Ventilation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Emergency Medicine 2022年第4期10卷 176-182页

作者： koji Konishi Satoki Inoue Masahiko Kawaguchi Department of Clinical Engineering Nara Medical University Hospital Nara Japan Department of Anesthesiology Fukushima Medical University Hospital Fukushima Japan Department of Anesthesiology Nara Medical University Hospital Nara Japan

Heating and humidification control during mechanical ventilation is important. Water condensation can occur due to insufficient humidification. Condensation in the breathing circuit can cause various adverse events. In this study, we investigated whether the occurrence of tubing condensation in the breathing circuit could be affected by room temperature using a simulated respiratory circuit with a humidifier. The room temperature was set at 23°C, 25°C, and 27°C, and mechanical ventilation was performed for 8 h. The inspired gas was appropriately heated and humidified according to the manufacturer’s instructions. The weight of the circuit was measured every 2 h at room temperature to estimate the amount of condensation. During the mechanical ventilation, condensation continued to increase at a room temperature of 23°C, but only for the first 2 h at 25°C, and did not occur at 27°C. The room temperature of the indoor environment was one of the factors generating water condensation in the breathing circuit with a humidifier even when a heater wire in the breathing circuit was appropriately operated.

关键词： Room Temperature Heated Humidifier Mechanical Ventilation