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It is pointed out that the yaw dampers, which are often installed in between carbody and bogie frame of a high-speed railway vehicle, have such unfavorable points that the damping force is generated not only in the yawing direction but also in other direction. As a result the damping force is generated also to the longitudinal or pitching vibration of a bogie, and the excitation force acts in the longitudinal direction of the carbody resulting in the increase of the carbody vibration of the longitudinal or vertical direction. In this research, to enable the reduction of the excitation of the carbody vibration while maintaining the original function of yaw dampers to prevent bogie hunting motion, a new mounting structure of yaw dampers on railway vehicles has been developed. The new mounting structure enables to reduce the excitation force transmitted from a bogie frame to a carbody through yaw dampers. In this paper, the effect of yaw dampers on the carbody vertical vibration is firstly shown based on the results of an excitation test of a full-scale vehicle, then the outline of the new mounting structure for yaw dampers and the design and manufacture of the prototype device are presented. The vehicle dynamics model based on multi body dynamics was constructed and the suppression effect of the yaw damper force generated to movement in the direction other than the yawing direction of a bogie was verified by the numerical simulation. Moreover, the prototype device was installed on a full-scale test vehicle and a bogie hunting motion test was carried out to verify the running stability.

2020-04-29 14:45:58
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2 0 0 0 後漢政治制度の研究

著者: 渡邉将智著
出版者: 早稲田大学出版部
巻号頁・発行日: 2014

2020-04-29 14:37:41
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https://ci.nii.ac.jp/ncid/BB15057738

2 0 0 0 OA 朝鮮の物語集

著者: 高橋亨著
出版者: 日韓書房
巻号頁・発行日: 1910

2020-04-29 13:50:36
2 + 3 Wikipedia

2 0 0 0 OA C211 流体力学が証す火焔土器

著者: 中山泰喜青木克巳沖真
出版者: 社団法人可視化情報学会
雑誌: 可視化情報学会誌 (ISSN:09164731)
巻号頁・発行日: vol.25, no.Supplement2, pp.339-342, 2005-10-01 (Released:2009-07-31)
参考文献数: 2

It is said that the Jomon Age began about12, 000 years ago and continued till about 2, 500 years ago. The potteries of that age are known as Jomon pottery. Among them, a pottery discovered from the Umataka ruin in Niigata Prefecture in 1931 has an excellent shape. It is said that this pottery was made about 4, 500 years ago. Jomon potteries of similar artistic styles have been discovered in various parts of Japan. These potteries have very nice shapes, but the pottery discovered from the Umataka ruin excels other potteries by its excellent proportion. From the shape of lip, it was named "Kaen pottery" meaning " flame pottery" . However, from the patterns of its lip and side wall, it is more appropriate to consider that they are related to water flow. In this report, this hypothesis by a visualization method using the pollen of cedar and pine trees, and computer simulation.

2020-04-29 11:27:40
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2 0 0 0 OA 死亡原因からみた疾病の変遷

著者: 山口直人
出版者: 一般社団法人日本内科学会
雑誌: 日本内科学会雑誌 (ISSN:00215384)
巻号頁・発行日: vol.91, no.1, pp.118-120, 2002-01-10 (Released:2008-06-12)

2020-04-29 10:51:00
2 レファ協

2 0 0 0 中世・部会報告足利義尹政権考 (2011年度大会特集号)

著者: 萩原大輔
出版者: 大阪歴史学会
雑誌: ヒストリア (ISSN:04392787)
巻号頁・発行日: no.229, pp.78-103, 2011-12

2020-04-29 09:17:56
2 + 1 Wikipedia

https://ci.nii.ac.jp/naid/40019141766

2 0 0 0 OA Energy conservation in photosynthetic microorganisms

著者: Katsuhiko Okada Shoko Fujiwara Mikio Tsuzuki
出版者: Applied Microbiology, Molecular and Cellular Biosciences Research Foundation
雑誌: The Journal of General and Applied Microbiology (ISSN:00221260)
巻号頁・発行日: pp.2020.02.002, (Released:2020-04-24)
参考文献数: 96
被引用文献数: 10

Photosynthesis is a biological process of energy conversion from solar radiation to useful organic compounds for the photosynthetic organisms themselves. It, thereby, also plays a role of food production for almost all animals on the Earth. The utilization of photosynthesis as an artificial carbon cycle is also attracting a lot of attention regarding its benefits for human life. Hydrogen and biofuels, obtained from photosynthetic microorganisms, such as microalgae and cyanobacteria, will be promising products as energy and material resources. Considering that the efficiency of bioenergy production is insufficient to replace fossil fuels at present, techniques for the industrial utilization of photosynthesis processes need to be developed intensively. Increase in the efficiency of photosynthesis, the yields of target substances, and the growth rates of algae and cyanobacteria must be subjects for efficient industrialization. Here, we overview the whole aspect of the energy production from photosynthesis to biomass production of various photosynthetic microorganisms.

2020-04-29 05:44:24
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2 0 0 0 OA 腸内細菌と自己免疫

著者: 三宅幸子
出版者: 日本臨床免疫学会
雑誌: 日本臨床免疫学会会誌 (ISSN:09114300)
巻号頁・発行日: vol.37, no.5, pp.398-402, 2014 (Released:2015-01-06)
参考文献数: 15

腸管は最大の免疫組織でもあるが,常に食物の摂取などを通して外来抗原に接するうえに,100兆個にも達する腸内細菌と共存するなど独特な環境にある.近年,自然免疫研究の進歩に加え,シークエンス技術の進歩による培養によらない腸内細菌叢の網羅的遺伝子解析などが可能となり,常在細菌による免疫反応の調節に関する研究が進み,自己免疫との関係についても注目されている.無菌飼育下では多発性硬化症や関節リウマチの動物モデルは病態が軽減する.また抗生剤投与により腸内細菌を変化させると病態が変化する.特定の細菌の移入による自己免疫病態への影響については,Th17細胞を誘導するセグメント細菌を移入すると病態が悪化する一方,制御性T細胞の増殖に関与するBacteroidesやLactobacillusを移入すると病態が軽減する.これら動物モデルの解析では,腸内細菌が積極的に病態に影響することが示されている.ヒトの疾患では関節リウマチで解析がされており,特定の菌が関与する可能性も示唆されている.免疫調節に最適な腸内環境の維持が可能になれば,疾患治療のみならず予防にもつながることから,研究の進展が期待される.