著者
Yuki Tsuji Hiroyuki Ohno
出版者
The Chemical Society of Japan
雑誌
Chemistry Letters (ISSN:03667022)
巻号頁・発行日
vol.42, no.5, pp.527-529, 2013-05-05 (Released:2013-05-05)
参考文献数
24
被引用文献数
10

Novel azolate-type ionic liquids (ILs), alkyltributylphosphonium benzimidazolates (alkyl chain: methyl, butyl, and octyl), were prepared by neutralization of the corresponding alkyltributylphosphonium hydroxides with benzimidazole. All the azolate-type ILs prepared here showed high ionic conductivities above 10−3 S cm−1 at 80 °C, and good thermal stability over 300 °C. They are expected to be useful platforms for functional ILs having good thermal stabilities.
著者
Hiroaki Sato Yoko Ishii Hikaru Momose Takafumi Sato Kanae Teramoto
出版者
The Mass Spectrometry Society of Japan
雑誌
Mass Spectrometry (ISSN:2187137X)
巻号頁・発行日
vol.2, no.1, pp.A0014, 2013-02-01 (Released:2013-01-31)
参考文献数
22
被引用文献数
10 13

The structural characterization of copolymers by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) remains a challenging task, since their random comonomer distribution creates very complicated mass spectra. In this study, a high-resolution TOF mass spectrometer with a spiral ion trajectory was applied to the structural and compositional characterization of free radical copolymerized poly(methyl methacrylate-co-tert-butyl methacrylate), poly(MMA-co-tBMA)s in ethyl lactate acting as a chain transfer agent. Virtually complete peak assignments of the isobaric components within the poly(MMA-co-tBMA)s served to identify the end-group combinations and copolymer compositions of individual copolymer components, allowing the distributions of comonomer compositions and six types of end-group combinations to be evaluated.
出版者
文藝春秋
巻号頁・発行日
2009
著者
笠井昌昭編
出版者
思文閣出版
巻号頁・発行日
2005
著者
笠井昌昭著
出版者
大巧社
巻号頁・発行日
1997
著者
笠井昌昭著
出版者
雄山閣出版
巻号頁・発行日
1973

1 0 0 0 OA 性の智識

著者
羽太鋭治 著
出版者
有教社
巻号頁・発行日
1928
著者
大須賀 隆子 Takako OSUGA
出版者
淑徳短期大学紀要委員会
雑誌
淑徳短期大学研究紀要 (ISSN:02886758)
巻号頁・発行日
no.51, pp.127-149, 2012

「大地保育とは、太陽と水と土に象徴される自然を充分に取り入れる自由保育方式の総称」であり、「創美(創造美育協会)の精神から生まれたものだ」1)と塩川豊子注1)は述べている。本論文では、倉橋惣三が実践した保育論を基に自由保育について定義し、戦後日本において自由保育をタイトルとして書かれた4冊の書籍を概観することを通して、塩川豊子が実践した自由保育の特色が、「どろんこ保育」「自由画の指導」「食事場面と午睡場面の自己決定」にあると捉えた。この3つの保育実践が、戦後大きく影響を受けたと塩川豊子が言う創美とりわけ宮武辰夫、そして創美を通して学んだと言うホーマー・レインとA.S.ニイルの教育思想とどのように関連しているかを考察することによって、塩川豊子の自由保育の根幹にあるものを明かにしようと試みた。
著者
宮本 詢子 大内 忠行
出版者
日本衛生動物学会
雑誌
衛生動物 (ISSN:04247086)
巻号頁・発行日
vol.27, no.3, pp.251-259, 1976
被引用文献数
10 17

Surveys of house dust mites were carried out during a period from December 1974 to January 1976 in two households in the suburbs of Tokyo, one in a newly buit concrete apartment house, and another in a nine year old wooden Japanese style house. Both had the rice straw mats (tatami) as the floor material. The mites were isolated from dust collected with a vacuum sweeper at monthly intervals. The dust samples were sieved first with a 9 mesh and a 200 mesh sieve, and fine dust on the 200 mesh was collected and weighed; 0.5g of the fine dust was transferred to a 100ml beaker, sstirred in 50ml of Darling's solution (mixture of equal amount of glycerine and saturated sodium chloride solution in water) for 10min, and was centrifuged for 5 min at 300 r.p.m. The supernatant containing mites were filtered with a Buchner filter, and the mites on the filter papers were collected with a needle under a stereomicroscope. The recovery rate of mites from house dust with this centrifugation and floatation method was estimated to be about 80% of the total mites contained in the original materials. The house dust collected from the new straw mat surface in December 1974 before the apartment house was inhabited contained large numbers of Tyrophagus putrescentiae and Glycyphagus destructor and also small numbers of Tydeus sp. and Tarsonemts sp. These mite species are considered to be breeding in the straw materials. On the other hand, mites of the family Pyroglyphidae, especially Dermatophagoides farinae and D. pteronyssinus began to appear from about one month after the family moved in the house, reached a peak in July at the end of the rainy season and in the beginning of summer. The increase in the predatory mites of the family Cheyletidae and of Mesostigmata occurred after this in September or October. The total number of mites isolated from 14 dust samples collected at monthly intervals from the old Japanese style house was 17,142 and more than twice larger than that of the new apartment house. The most abundant was Dermatophagoides pteronyssinus (48.0%), followed by D. farinae (33.8%) : The seasonal density of the seven groups of mites was shown in a table; the peak density of Dermatophagoides was seen also in July.