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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.
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.
日本語の文字種と書物の關係について -寫本の時代から版本の時代まで-
( Sasaki Takahiro ) 연세대학교 인문학연구원 2015 人文科學 Vol.103 No.-
Originally lacking an alphabet of its own, Japan made use of abbreviated or cursive Chinese characters to create katakana and hiragana, which stripped a character’s original semantic meaning to act as pure phonograms. Eventually Japanese came to be written using a combination of these three types of characters. The books in which these characters were written down also made use of binding methods imported from China, five types of which were used in parallel in Japan. Three of these binding methods were particularly common, and there was a status hierarchy among them, with a correlation between the contents of the work and the type of binding used. If we turn to examine the relationship between binding method and orthography, there is a clear tendency for scroll-format manuscripts to use lined paper for Chinese-character texts, but not for hiragana texts. A corresponding tendency can be found in codex-format printed books, which make use of a frame around the page for Chinese-character texts, but not in the earliest commercially-printed hiragana texts. This seems to be because while the frame used in Chinese-character texts serve to demonstrate the text is printed, hiragana printed books eliminated these in order to reproduce a manuscript format. Though some continuity remains, there is a difference in the respective attitudes displayed by manuscript and printed books towards the presence of lineation around the text. Thus, it is clear that in Japan the physical construction of the book held an intimate relationship, not just with the genre of writing it contained, but with its orthography as well.
Sasaki, T.T.,Ohkubo, T.,Hono, K. Elsevier 2009 Acta materialia Vol.57 No.12
<P><B>Abstract</B></P><P>Nanocrystalline Al–5at.% Fe alloy powders produced by mechanical alloying were consolidated by spark plasma sintering. The sintered sample showed high strength >1000MPa with a large plastic strain of 15% at room temperature and 500MPa at 350°C. Microstructure characterizations by transmission electron microscopy and atom probe tomography revealed that the sintered samples are composed of α-Al and Al<SUB>6</SUB>Fe nanocrystalline regions with 90nm in diameter and a minor fraction of Al<SUB>13</SUB>Fe<SUB>4</SUB> phase and coarsened 0.5–1μm α-Al grains. This bimodally grained feature is attributed to the relatively large plastic strain for the strength level of 1000MPa at room temperature.</P>
Another look at sa-insertion in Japanese
Sasaki, Kan 한국음운론학회 2013 음성·음운·형태론 연구 Vol.19 No.1
The sa-inserted causative form is a sub-standard form of the causative predicate. For this phenomenon, there are two analyses, the suffix leveling analysis and the double causative analysis. The present paper advocates a third analysis, the stem leveling analysis, where sa-insertion results from treating the host for causative suffixation as the irrealis stem across the board. This analysis is compatible with all the range of sub-standard causative forms, including rarely mentioned irrealis based causative form of the s-irregular verb.
2D and 3D separate and joint inversion of airborne ZTEM and ground AMT data: Synthetic model studies
Sasaki, Yutaka,Yi, Myeong-Jong,Choi, Jihyang Elsevier 2014 Journal of applied geophysics Vol.104 No.-
The ZTEM (Z-axis Tipper Electromagnetic) method measures naturally occurring audio-frequency magnetic fields and obtains the tipper function that defines the relationship among the three components of the magnetic field. Since the anomalous tipper responses are caused by the presence of lateral resistivity variations, the ZTEM survey is most suited for detecting and delineating conductive bodies extending to considerable depths, such as graphitic dykes encountered in the exploration of unconformity type uranium deposit. Our simulations shows that inversion of ZTEM data can detect reasonably well multiple conductive dykes placed 1 km apart. One important issue regarding ZTEM inversion is the effect of the initial model, because homogeneous half-space and (1D) layered structures produce no responses. For the 2D model with multiple conductive dykes, the inversion results were useful for locating the dykes even when the initial model was not close to the true background resistivity. For general 3D structures, however, the resolution of the conductive bodies can be reduced considerably depending on the initial model. This is because the tipper magnitudes from 3D conductors are smaller due to boundary charges than the 2D responses. To alleviate this disadvantage of ZTEM surveys, we combined ZTEM and audio-frequency magnetotelluric (AMT) data. Inversion of sparse AMT data was shown to be effective in providing a good initial model for ZTEM inversion. Moreover, simultaneously inverting both data sets led to better results than the sequential approach by enabling to identify structural features that were difficult to resolve from the individual data sets. (C) 2014 Elsevier B.V. All rights reserved.