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EMISSION LINE VELOCITY FIELD OF THE MAGELLANIC IRREGULAR GALAXY NGC 4449
SASAKI MINORU,OHTANI HIROSHI,SAITO MAMORU,OHTA KOUJI,YOSHIDA MICHITOSHI,SHIMIZU TASUHlRO,KOYANO HISASHI,KOSUGI GEORGE,AOKI KENTARO,SASAKI TOSHIYUKI The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1
The imaging spectroscopic observations of the Magellanic irregular galaxy NGC 4449 were made to show the detailed kinematic structure of the galaxy. Many filamentary structures and Several bubble-like structures are recognized in a 3D data cube of H$\alpha$ emission line. Velocity field shows the kpc-scale mosaic structure and counter- rotation of ionized gas.
Sasaki, Hiraku,Nonaka, Jun,Otawa, Kenichi,Kitazume, Osamu,Asano, Ryoki,Sasaki, Takako,Nakai, Yutaka Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.1
We investigated the structure of bacterial communities present in livestock manure-based composting processes and evaluated the bacterial succession during the composting processes. Compost samples were derived separately from swine manure, dairy manure and sewage sludge. The structure of the bacterial community was analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) using universal eubacterial primers. The genus Bacillus and related genera were mainly detected following the thermophilic composting phase of swine and dairy manure composts, and the members of the phylum Bacteroidetes were mainly detected in the cattle manure waste-based and sewage sludge compost. We recovered and sequenced limited number of the bands; however, the PCR-DGGE analysis showed that predominant diversities during the composting processes were markedly changed. Although PCR-DGGE analysis revealed the presence of different phyla in the early stages of composting, the members of the phylum Firmicutes and Bacteroidetes were observed to be one of the predominant phyla after the thermophilic phase.
WEATHER CHARACTERISTICS AT OBSERVATORY CANDIDATE SITES IN WEST TIBET
SASAKI, TOSHIYUKI,NAOE, HIROAKI,UTSUMI, YOSUKE,WANG, HONGSHUAI,YAO, YONGQIANG,YOSHIDA, MICHITOSHI,OHSHIMA, NORIO,MIKAMI, YOSHITAKA,OKADA, NORIO,KOYANO, HISASHI,SEKIGUCHI, KAZUHIRO,ANDO, HIROYASU,LIU, The Korean Astronomical Society 2015 天文學論叢 Vol.30 No.2
The high plateaus in west China may provide suitable sites for astronomical observations with the institute's middle-range telescopes and possibly with larger telescopes. Under China-Japan collaborations for site survey in west China, we have been conducting searches for good sites and monitoring their characteristics over several years. As recent results of our site survey show, sites in west Tibet are revealed with a high possibility of good astronomical observations. Weather characteristics at Gar in Ali, Tibet, show its high clear-sky ratios, especially in winter, comparable to Mauna Kea, Hawaii. But it has some wind problem in winter, where stronger wind speeds, over 20m/sec, occur frequently even though the sky is clear. To find calmer sites, we have conducted numerical simulations for the Ali area using the Japan Meteorological Agency NonHydrostatic Model. We have found another site, named ZoZo Hill, near Gar. We will continue to monitor the Gar site to clarify weather characteristics over the whole year and hopefully start to negotiate for site monitoring at ZoZo Hill this year.
On the Methodology of Sea Port Cities Studies
SASAKI, Mamoru(사사키 마모루) 한국해양대학교 국제해양문제연구소 2018 해항도시문화교섭학 Vol.0 No.19
본고는 해항도시 연구를 사회학의 관점에서 재고하고 연구방법론에 관한 몇 가지 문제를 검토한 것이다. 첫째, 해항도시의 개념에 관한 것으로, 해항도시를 접촉지대로서 인식하고 연구해야 한다는 점을 도출했다. 둘째, 세계화 시대의 사회문화적 역동성에 관한 사회학 이론으로서 비교연구방법론을 검토했다. 셋째, 중국의 사회학자 페이샤오퉁이 제안한 ‘유형 비교 접근법’을 검토하여 해항도시 연구방법을 재고했다. 이상의 검토를 통해 필자는 해항도시의 연구방법으로서 비교연구방법의 중요성을 강조하고자 한다. 비교연구방법을 통해 다원적 관점에서 연구 결과를 검토할 수 있고, 개별 사례 연구의 다양한 정보를 축적할 수 있으며, 확장된 주제를 바탕으로 보다 심도있고 종합적인 연구를 진행할 수 있을 것이다. In this paper I propose to rethink of the method of Sea Port Cities Studies. For this subject, I examine some issues. The first issue is on the conception of Sea Port Cities as Contact Zone. The second is a discussion of the sociological theory on socio-cultural dynamics of the globalizing era. The third is about the methodology of Sea Port Cities Studies. In conclusion, I point out the importance of the comparative studies method, through that we can review our findings from pluralistic perspective of academic researches and accumulate various information of individual field study for analyzing the subject more deeply. Besides, we can stress our forum has served important roles to bring up young generation"s researchers.