检索结果-南通市图书馆

Present Status of the Nd:YAG Thomson Scattering System Development for Time Evolution Measurement of Plasma Profile on Heliotron J

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2013年第3期15卷 240-243页

作者： Takashi MINAMI Shohei ARAI Naoki KENMOCHI Hiroaki YASHIRO Chihiro TAKAHASHI shinji kobayashi Tohru MIZUUCHI Shinsuke OHSHIMA Satoshi YAMAMOTO Hiroyuki OKADA Kazunobu NAGASAKI Yuji NAKAMURA Kiyoshi HANATANI Shigeru KONOSHIMA Fumimichi SANO Institute of Advanced Energy Kyoto University Graduate School of Energy Science Kyoto University Pioneering Research Unit for Next Generation Kyoto University

A new high repetition rate Nd：YAG Thomson scattering system is developed for the Heliotron J helical device. A main purpose of installing the new system is the temporal evolution measurement of a plasma profile for improved confinement physics such as the edge transport barrier （H-mode） or the internal transport barrier of the helical plasma. The system has 25 spatial points with -10 mm resolution. Two high repetition Nd：YAG lasers （〉 550 m J@ 50 Hz） realize the measurement of the time evolution of the plasma profile with ~10 ms time intervals. Scattered light is collected by a large concave mirror （D----800 mm, f/2.25） with a solid angle of -100 mstr and transferred to interference filter polychromators by optical fiber bundles in a staircase form. The signal is amplified by newly designed fast preamplifiers with DC and AC output, which reduces the low frequency background noise. The signals are digitized with a multi-event QDC, fast gated integrators. The data acquisition is performed by a VME-based system operated by the CINOS.

关键词： plasma diagnostic Nd:YAG laser Thomson scattering measurement plasma improved confinement

Influence of Temperature, Moisture, and Light Conditions on the Germination of Seeds of <i>Erythronium japonicum</i>Decne

在线全文

学校读者我要写书评

暂无评论

Open Journal of Forestry 2018年第1期8卷 105-116页

作者： Yumiko Kanazawa Junko Abe shinji kobayashi Kazue Shibuya Kojiro Suzuki Department of Landscape Architecture Science Faculty of Regional Environmental Science Tokyo University of Agriculture Tokyo Japan

Erythronium japonicum is a representative species of spring ephemeral, forest floor plants in substitution forests in Japan. Seed germination tests were conducted to observe the effects of temperature, light, and moisture content on the germination of E. japonicum. E. japonicum seeds did not germinate at constant temperatures of 5°C, 10°C, 15°C, 20°C, or 25°C. Seeds germinated at 5°C and 10°C after storage at 20°C for 1 or 2 months. Seed germinability was affected by desiccation to only 40% moisture content. Seeds germinated well in both light and dark conditions. Conditions under the leaf litter layer showed unique characteristics of temperature, light, and moisture content. The temperature was around 20°C under the leaf litter layer, even though it was 30°C above. The moisture content under the leaf litter layer was higher than that above. The leaf litter blocked out the sunlight. The temperature of 20°C necessary for E. japonicum germination occurred below, but not above, the leaf litter layer. The avoidance of decreasing in germinability from reduced seed moisture content in a short time is consistent with the high moisture conditions under the leaf litter layer. The leaf litter layer plays an important role in providing optimal conditions of temperature, light, and moisture content for the germination of E. japonicum seeds.

关键词： Erythronium japonicum Leaf Litter Layer Life History Seed Germination Spring Ephemeral

柴油机燃用乙醇的燃烧技术——混合燃料、双燃料喷射和电火花点火

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

内燃机学报 1986年第3期4卷 211-228页

作者：小林伸治日本汽车研究所

本文就高速纹影摄影和气缸压力的热力分析法,对使用乙醇作燃料的柴油机的三种燃烧技术的燃烧过程,进行了基本研究。这三种燃烧技术包括:混合燃料、双燃料喷射和电火花辅助点火。在柴油中掺醇由于降低了十六烷值造成着火延迟期变长,但与... 详细信息

本文就高速纹影摄影和气缸压力的热力分析法,对使用乙醇作燃料的柴油机的三种燃烧技术的燃烧过程,进行了基本研究。这三种燃烧技术包括:混合燃料、双燃料喷射和电火花辅助点火。在柴油中掺醇由于降低了十六烷值造成着火延迟期变长,但与柴油相比,其碳烟的生成却减少了。在双燃料喷射发动机中,两种燃料的混合方式对燃烧过程影响很大。在电火花辅助点火发动机中,燃烧过程主要受点火时间影响。该发动机的燃烧过程与普通柴油机或汽油机类似,取决于发火时间。依据这些基本研究的结果制成了几台样机。实验表明,该发动机的性能前景良好。

关键词：燃料喷射电火花点火燃烧技术燃烧过程柴油机压燃发动机混合燃料一弓乙醇酒醇一元醇林伸内燃机学报

Recent Progress in Plasma Control Studies on the Improvement of Plasma Performance in Heliotron J

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2011年第1期13卷 21-25页

作者： Tohru MIZUUCHI Kazunobu NAGASAKI Hiroyuki OKADA shinji kobayashi Satoshi YAMAMOTO Takashi MINAMI Shinsuke OHSHIMA Masaki TAKEUCHI Kiyofumi MUKAI Hyunyong LEE Linge ZANG Kohta NOMURA Masashige SUWA Kento YAMAMOTO Hiroaki YASHIRO Hayao YOSHINO Shouhei ARAI Tasuku KAGAWA Takayuki MINAMI Kouji MIZUNO Yoshinobu WADA Hiroto WATADA Nobuhiro NISHINO Yosuke NAKASHIMA Kiyoshi HANATANI Yuji NAKAMURA Shigeru KONOSHIMA Fumimichi SANO Institute of Advanced Energy Kyoto Univ. Kyoto University Pioneering Research Unit for Next Generation Graduate School of Energy Science Kyoto University Graduate School of Engineering Hiroshima University Plasma Research Center University of Tsukuba

Recent progress in plasma control studies on the improvement of plasma performance in Heliotron J is reviewed. The supersonic molecular beam injection （SMBI） fueling is successfully applied to Heliotron J plasma. A supersonic H2-beam is effectively injected to increase fueling efficiency and generate a peaked density profile. Local fueling with a short-pulsed SMBI can increase the core plasma density and avoid the degradation arising from edge cooling. Second harmonic electron cyclotron current drive （ECCD） experiments were conducted by launching a focused Gaussian beam with a parallel refractive index of -0.05 ≤ Nil 〈 0.6. Results show that the electron cyclotron （EC） driven current is determined not only by Nil but also by local magnetic field （B） structure where the EC power is deposited. Detailed analysis of the observed NI and B dependences is in progress with a ray-tracing simulation using the TRAVIS code. Fast ion velocity distribution was investigated using fast protons generated by ion cyclotron resonant frequency （ICRF） minority heating. For the standard configuration in Heliotron J, charge ex- change neutral particle analysis （CX-NPA） measurements show higher effective temperature of fast minority protons in the on-axis resonance case compared to that in the HFS （high field side） off-axis resonance case. However, the increase in bulk ion temperature in the HFS resonance case is larger than that in the on-axis resonance.

关键词： plasma control. Heliotron J improved confinement ECH/ECCD NBI ICRF. minority heating fueling control

High efficiency HITTM Solar Cells and the Effects of Open Circuit Voltage on Temperature Coefficients

在线全文

学校读者我要写书评

暂无评论

High efficiency HITTM Solar Cells and the Effects of Open Ci...

Extraction of yarn positional information from three-dimensional CT image of textile fabric using a yarn model for its structure analysis

第十五届国际光伏科学与工程大会

作者： Akira Terakawa Toshio Asaumi shinji kobayashi Yasufumi Tsunomura Toshio Yagiura Mikio Taguchi Yukihiro Yoshimine Hitoshi Sakata Eiji Maruyama Makoto Tanaka Advanced Energy Research Center Sanyo Electric Co. Ltd.7-3-2 Ibukidai-higashimachi Nishi-ku Kobe Hyogo 651-2242 Japan

We have established a new record conversion efficiency of 21.5% for HIT solar cell (Voc: 712mV, Jsc: 38.26mA/cm2, FF: 0.787, 100.3cm2, measured at AIST). Also worthy of special mentions are the very high fill factor (FF) of 0.802 and the very high open circuit voltage (Voc) of over 725mV for other efficient solar cells. Additional practical advantage of the HIT cells is the relatively small temperature coefficients, which is another practical advantage of the HIT cell. The insight of the small temperature coefficients is also discussed by comparing other solar cells.

关键词：

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

仪器仪表学报 2008年第8期29卷 1569-1576页

作者： Toshihiro Shinohara Jun-ya Takayama shinji Ohyama Akira kobayashi School of Biology-Oriented Science and Technology Kinki University Kinokawa-shi Wakayama-kenJapan Graduate School of Science and Engineering Tokyo Institute of Technology1-12-1 Meguro-kuTokyoJapan Faculty of University Evaluation and Research National Institution for Academic Degrees and UniversityEvaluation Kodaira-shi TokyoJapan

This paper proposes a novel method for analyzing a textile fabric structure to extract positional information regarding each yarn using three-dimensional X-ray computed tomography(3D CT) *** relationship among the yarns can be reconstructed using the extracted yarn positional *** this paper,a sequence of points on the center line of each yarn of the sample is defined as the yarn positional information,since the sequence can be regarded as the representative position of the *** sequence is extracted by tracing the *** yarn is traced by estimating the yarn center and direction and correlating the yarn part of the 3D CT image with a 3D yarn model,which is moved along the estimated yarn *** trajectory of the center of the yarn model corresponds to the positional information of the *** application of the proposed method is shown by experimentally applying the proposed method to a 3D CT image of a double-layered woven ***,the experimental results for a plain knitted fabric show that this method can be applied to even knitted fabrics.

关键词：纺织品 CT影像分析方法物理结构

Occurrence factors of large vacant lots in central districts and their utilization by local governments in Japan

在线全文

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2016年第4期5卷 393-402页

作者： Takeshi kobayashi shinji Ikaruga Graduate School of Science and Technology for Innovation Yamaguchi University Yamaguchi 753-8511Japan

In Japan, focal cities experience a number of probtems retated to deterioration of residentiat environment, quality of public service, and vitalization of commercial rand. SpecificaLLy, the presence of Large vacant tots behind sizable stores, office buildings, hospitals, and factories devitatize urban activity and its Landscape. Many local cities are seeking to actuatize a sustainable compact city with an integrated poputation, commerce, traffic and other pubLic services in ways that promote a tow carbon and energy-conserving society. Against the backdrop of these issues, this study examines the occurrence of large vacant lots and their utilization by tocat governments in Japan based on a questionnaire and fietd survey. It highlights severat cases in which a Large vacant tot is used to forward the development of a compact city by a tocat government.

关键词： Large vacant tot Centra| district Urban regeneration Land use conversion Compact city

Development of a smart city planning support tool using the cooperative method

在线全文

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2015年第4期4卷 277-284页

作者： Takeshi kobayashi shinji Ikaruga Graduate School of Science and Engineering Yamaguchi University Yamaguchi-shi 753-8511 Japan

A reduction of environmental burdens is currently required. In particular, proposing a new approach for the construction of a smart city using renewable energy is important. The technological development of a smart city is founded building equipment and infrastructure. However, planning methods and their techniques using the collaboration approach with residents are only just developing. This study aimed to develop a support tool for the construction of a smart city using renewable energy while facilitating consensus-building efforts among residents using the method for a cooperative housing development. We organized the supporting methods for the construction of residential area using the cooperative method. Then, we developed supporting toots that interface the computer with these methods. We examined the support techniques for the construction of a residential area using renewable energy technology by analyzing Japanese cases of a smart city. Moreover, we developed a support toot for the construction of a smart city on a trial basis. We integrated the smart city construction toots and the cooperative housing construction support tool. This tool has a 3D modeling system that helps residents to easily understand the space image as a result of the examination. We also developed a professional supporting toot that residents can consider for cost-effectiveness in renewable energy and its environmental toad reduction rate for the planning of a smart city.

关键词： Cooperative method Consensus buitding Smart city Renewabte energy Visual image Project evatuation

Method for the proposal and evaluation of urban structures for compact cities using an expert system

在线全文

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2016年第4期5卷 403-411页

作者： Shirou Tsuboi shinji Ikaruga Takeshi kobayashi Graduate School of Science and Engineering Yamaguchi University Yamaguchi-shi 753-8511 Japan

The world population is continually increasing, but the Japanese population is decreasing. By 2050, the Japanese population is calculated to be close to 100 million people, and by 2060, 40% of the Japanese are estimated to be aged 65 years or more. Data show an increase in the declining birth and aging rates of the population. The development of high-concentration urban structures will be needed to solve such problems. However, a detailed vision of the future is yet to be clarified and in the process of consideration. In this study, we developed an instrument called ＂Population Migration Tool,＂ which is based on plural planning and policy, after we formed a future population distribution model. In addition, We also established a high- concentration urban structure model with this tool with the aim of considering the kind of urban structure local cities should target in the future.

关键词： Local city Compact city Future population Visualization Concentration urbanstructure