检索结果-南通市图书馆

Tropical Cyclone Research and Review 2019年第3期8卷 166-180页

作者： H.A.Titley m.yamaguchi L.magnusson met Office ExeterU.K. University of Reading ReadingU.K. meteorological Research Institute Japan Meteorological AgencyTsukubaJapan European Centre for medium-Range Weather Forecasts ReadingU.K.

In order to understand the current and potential use of ensemble forecasts in operational tropical cyclone(TC)forecasting,a questionnaire on the use of dynamic ensembles was conducted at operational TC forecast centers across the world,in association with the World meteorological Organisation(WmO)High-Impact Weather Project(HIWeather).The results of the survey are presented,and show that ensemble forecasts are used by nearly all respondents,particularly in TC track and genesis forecasting,with several examples of where ensemble forecasts have been pulled through successfully into the operational TC forecasting *** is still however,a notable difference between the high proportion of operational TC forecasters who use and value ensemble forecast information,and the slower pull-through into operational forecast warnings and products of the probabilistic guidance and uncertainty information that ensembles can *** areas of research and development that would help TC forecasters to make increased use of ensemble forecast information in the future include improved access to ensemble forecast data,verification and visualizations,the development of hazard and impact-based products,an improvement in the skill of the ensembles(particularly for intensity and structure),and improved guidance on how to use ensembles and optimally combine forecasts from all available models.A change in operational working practices towards using probabilistic information,and providing and communicating dynamic uncertainty information in operational forecasts and warnings,is also recommended.

关键词： tropical cyclones operational forecaster survey ensemble forecasts probabilistic forecasts uncertainty

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

油浸自冷变压器中油的流率

变压器 1982年第3期 29-34页

作者： m.yamaguchi 姜孝腊

本文提出了油浸自冷变压器中循环油流率的计算方法,并在试验模型上进行了验证。该方法的计算结果与实验结果相差不超过15%,因此,对设计油浸自冷变压器有一定实用价值。

关键词：循环油雷诺数 REYNOLDS数油道压降系数流率油浸自冷变压器

Impurities in GaAsN Grown by Chemical Beam Epitaxy Using monomethylhydrazine or Dimethylhidrazine as N Precursor

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Impurities in GaAsN Grown by Chemical Beam Epitaxy Using Mon...

异常锁骨下动脉用于体—肺动脉分流——一种新技术

第十五届国际光伏科学与工程大会

作者： H.Suzuki K.Nishimura H.S.Lee Y.Ohshita I.Gono N.Kojima m.yamaguchi Toyota Technological Institute 2-12-1 Hisakata Tempaku-ku Nagoya 468-8511 Japan Aichi Steel arao-tyou Tokai 476-8666 Japan

To achieve high quality InGaAsN solar cell, impurities that originated by N precursor in GaAsN thin films were studied. The films are grown on GaAs(001) substrates by chemical beam epitaxy (CBE) method using monomethylhydrazine (mmH) or 1,1-dimethylhydrazine (DmH) as nitrogen precursor. The reaction of N precursors on the substrates was observed by temperature program desorption (TPD) and concentration of impurities were measured by secondary ion mass spectroscopy (SImS). From the measurements of TPD, mmH reaction path on a substrate surface is considered as follows: at first N-N bond breaks, then NH and NH(CH) absorb on the surface. NH and NH(CH) desorbs from the surface at 430 and 280°C, respectively. The shoulder of NH(CH) desorption peak extended to 380°C. This reaction model is consistent with C and N concentrations in the films measured by SImS. By using DmH as N precursor, C incorporation can be reduced because N(CH) desorbs from the surface at lower temperature than NH(CH).

关键词： 4-junction solar cell Ⅲ-V-N Impurities Chemical beam epitaxy TPD SImS

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

心肺血管病杂志 1989年第4期 217-217页

作者： m.yamaguchi 陈正光

本文首次报告了利用异常锁骨下动脉作为体—肺动脉分流的间置移植物的手术方法,其具体操作为:经异常锁骨下动脉侧的胸外侧切口进胸,结扎位于食管后侧的异常

关键词：锁骨下动脉手术方法侧开胸

基于四维血流成像的特发性常压脑积水的脑脊液动力学研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2020年第5期 628-628页

作者： S.Yamada m.Ishikawa H.Ito K.Yamamoto m.yamaguchi m.Oshima 白晓燕 Department of Neurosurgery Shiga University of Medical Science

摘要目的通过四维(4D)血流mRI评价特发性正常压力脑积水(iNPH)病人的复杂脑脊液(CSF)流动和剪切力。材料与方法采用4D血流成像及应用技术,纳入41例iNPH

关键词：

The neutrophil–osteogenic cell axis promotes bone destruction in periodontitis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Oral Science 2024年第1期16卷 154-162页

作者： Yutaro Ando masayuki Tsukasaki Nam Cong-Nhat Huynh Shizao Zang minglu Yan Ryunosuke muro Kazutaka Nakamura masatsugu Komagamine Noriko Komatsu Kazuo Okamoto Kenta Nakano Tadashi Okamura Akira yamaguchi Kazuyuki Ishihara Hiroshi Takayanagi Department of Immunology Graduate School of Medicine and Faculty of MedicineThe University of Tokyo7-3-1HongoBunkyo-kuTokyoJapan Department of microbiology Tokyo Dental College2-1-14 Kanda-Misaki-choChiyoda-kuTokyoJapan Oral Health Science Center Tokyo Dental College2-9-18Kanda-Misaki-choChiyodakuTokyoJapan Department of Osteoimmunology Graduate School of Medicine and Faculty of MedicineThe University of Tokyo7-3-1HongoBunkyo-kuTokyoJapan Unit of Prosthodontics Laboratory of Oral-Maxillofacial Biology Faculty of Odonto-StomatologyUniversity of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh CityVietnam Department of Oral and maxillofacial Surgery Department of Sensory and Motor System MedicineGraduate School of MedicineThe University of TokyoTokyoJapan Division of Rheumatology Department of Internal MedicineKeio University School of MedicineTokyoJapan Department of Laboratory Animal medicine Research InstituteNational Center for Global Health and MedicineTokyoJapan

The immune-stromal cell interactions play a key role in health and diseases. In periodontitis, the most prevalent infectious disease in humans, immune cells accumulate in the oral mucosa and promote bone destruction by inducing receptor activator of nuclear factor-κB ligand (RANKL) expression in osteogenic cells such as osteoblasts and periodontal ligament cells. However, the detailed mechanism underlying immune–bone cell interactions in periodontitis is not fully understood. Here, we performed single-cell RNAsequencing analysis on mouse periodontal lesions and showed that neutrophil–osteogenic cell crosstalk is involved in periodontitis-induced bone loss. The periodontal lesions displayed marked infiltration of neutrophils, and in silico analyses suggested that the neutrophils interacted with osteogenic cells through cytokine production. Among the cytokines expressed in the periodontal neutrophils, oncostatin m (OSm) potently induced RANKL expression in the primary osteoblasts, and deletion of the OSm receptor in osteogenic cells significantly ameliorated periodontitis-induced bone loss. Epigenomic data analyses identified the OSm-regulated RANKL enhancer region in osteogenic cells, and mice lacking this enhancer showed decreased periodontal bone loss while maintaining physiological bone metabolism. These findings shed light on the role of neutrophils in bone regulation during bacterial infection, highlighting the novel mechanism underlying osteoimmune crosstalk.

关键词： period neutrophil destruction

Ground-state mass of ^(22)Al and test of state-of-the-art ab initio calculations

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第3期48卷 72-78页

作者：孙铭泽于越王新鹏王猛李健国张玉虎 K.Blaum 陈祖毅陈瑞九邓涵宇付超义葛文文黄文嘉焦红扬李红蕙李宏福罗胤芳廖挺 YuALitvinov 司敏帅鹏史金阳王茜邢元明徐星徐瑚珊许甫荣袁琪 T.yamaguchi 颜鑫亮杨建成原有进周小红周旭张敏曾奇 CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China max-Planck-Institut für Kernphysik Saupfercheckweg 169117 HeidelbergGermany GSI Helmholtzzentrum für Schwerionenforschung Planckstraße 164291 DarmstadtGermany Advanced Energy Science and Technology Guangdong Laboratory Huizhou516007China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Department of Physics Saitama UniversitySaitama 338-8570Japan School of Nuclear Science and Engineering East China University of TechnologyNanchang 330013China

The ground-state mass excess of the T_(z)=−2 drip-line nucleus ^(22)Al is measured for the first time as 18103(10)keV using the newly-developed Bρ-defined isochronous mass spectrometry method at the cooler storage ring in *** new mass excess value allowed us to determine the excitation energies of the two low-lying 1+states in ^(22)Al with significantly reduced uncertainties of 51 *** compared to the analogue states in its mirror nucleus ^(22)F,the mirror energy differences of the two 1^(+)states in the ^(22)Al-^(22)F mirror pair are determined to be−625(51)keV and−330(51)*** excitation energies and mirror energy differences are used to test the state-of-the-art ab initio valence-space in-medium similarity renormalization group calculations with four sets of interactions derived from the chiral effective field *** mechanism leading to the large mirror energy differences is investigated and attributed to the occupation of theπs_(1/2) orbital.

关键词： nuclear mass Bρ-defined ImS mirror energy difference ab initio VS-ImSRG calculations chiral interactions

HIGH CYCLE FATIGUE PROPERTIES OF NICKEL-BASE ALLOY 718

在线全文

学校读者我要写书评

暂无评论

Acta metallurgica Sinica(English Letters) 2004年第4期17卷 345-349页

作者： K.Kobayashi K.yamaguchi m.Hayakawa m.Kimura National Institute for materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 Japan

The fatigue properties of nickel-base Alloy 718 with fine- and grain-coarse grains were investigated. In the fine-grain alloy, the fatigue strength normalized by the tensile strength was 0.51 at 107 cycles. In contrast, the fatigue strength of the coarse-grain alloy was 0.32 at the same cycles, although the fatigue strengths in the range from 103 to 105 cycles are the same for both alloys. The fracture appearances fatigued at around 106 cycles showed internal fractures originating from the flat facets of austenite grains for both alloys. The difference in fatigue strength at 107 cycles between the fine- and coarse-grain alloys could be explained in terms of the sizes of the facets from which the fractures originated.

关键词： aerospace material fatigue high temperature internal fracture,facet

Computer-generated holograms for 3D display(Invited Paper)

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2009年第12期7卷 1079-1082页

作者： Hiroshi Yoshikawa Takeshi yamaguchi Department of Electronics and Computer Science Nihon University

We have been studying various types of computer-generated holograms for three-dimensional （3D） displays both for a real-time holographic video display and a hard copy, or a printed hologram. For the hard copy output, we have developed a direct fringe printer, which is achieved to print over 100 gigapixels computer-generated hologram with 0.44μm pitch. In this paper, we introduce our recent progresses on the rainbow hologram, the cylindrical holograms, and the disk hologram for 3D display.

关键词： Computer-generated holograms for 3D display Figure