Search Results 1-20 of 646

  • Determination of Atmospheric Radiocesium by Analyzing Filter-tapes Used in Automated Suspended Particulate Matter Monitors

    OURA Yasuji , TSURUTA Haruo , EBIHARA Mitsuru , OHARA Toshimasa , NAKAJIMA Teruyuki

    <p>著者らは,2011年に発生した東京電力福島第一原子力発電所(以下,原発と記す)事故で放出された放射性セシウム(<sup>134</sup>Csと<sup>137</sup>Cs)の原発事故当時の大気中濃度の定量を,大気汚染常時監視網として全国に設置されている浮遊粒子状物質(SPM)自動測定機(以下,SPM計と記す)で事故当時にテープ …

    BUNSEKI KAGAKU 69(1.2), 1-9, 2020

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  • Problems Due to Suspended Particulate Matter (SPM) in Nordic Cities  [in Japanese]

    中山 榮子 , Eiko NAKAYAMA

    … This paper reports the results of suspended particulate matter (SPM) measurements carried out in the Nordic cities of Copenhagen, Oslo, Stockholm, Helsinki and Rovaniemi so they could be compared with values obtained in Asian cities. …

    学苑 (945), 65-70, 2019-07

    IR 

  • Behavior of Suspended Particulate Matter Near the Ocean Bottom Boundary Layer  [in Japanese]

    Furuichi Naoki , Higashi Hironori , Sugimatsu Koichi , Ohmura Yoshihiro , Koshikawa Hiroshi , Hasegawa Toru , Yamada Haruya , Nambu Ryogen , Kaeriyama Hideki

    粒径別粒子濃度に関する現場観測を行い,海底混合層変動と懸濁粒子動態の関連性について検討した.観測結果からは密度成層条件下において海底混合層が形成され,粒径区分毎の粒子濃度が海底混合層の外側で顕著に減少する結果(特徴1),海水密度分布が一様な場合に各粒径区分の粒子が全水深にわたって広範囲に分布する結果(特徴2)が確認され,これらは既往の数値研究による知見とも整合した.鉛直1次元の数値実験からは,乱流 …

    Bulletin on Coastal Oceanography 57(1), 21-30, 2019

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  • ORIGINS AND OXYGEN CONSUMPTION OF PARTICULATE ORGANIC MATTER DEPOSITING IN OYSTER FARMS  [in Japanese]

    HATAKEYAMA Yuji , KAWAHATA Tatsuya , NISHIMURA Osamu , SAKAMAKI Takashi

    <p> 内湾底層の有機汚濁につながることが懸念されるカキ養殖から沈降する有機物の化学組成,起源,および酸素消費能を評価した.調査対象とした南三陸町志津川湾のカキ養殖場内では場外と比較し有機炭素沈降フラックスが平均8倍程度増加していた.養殖場内の沈降有機物は,酸素消費活性および藻類由来マーカー脂肪酸の割合がともに沈降有機物の潜在的起源であると考えられるカキ排泄物や付着物と比較し小さかった …

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 75(7), III_289-III_298, 2019

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  • Japanese Nationwide Study on the Association Between Short-term Exposure to Particulate Matter and Mortality

    Michikawa Takehiro , Ueda Kayo , Takami Akinori , Sugata Seiji , Yoshino Ayako , Nitta Hiroshi , Yamazaki Shin

    … Background: From around 2012, the use of automated equipment for fine particulate matter (PM₂.₅) measurement with equivalence to a reference method has become popular nationwide in Japan. …

    Journal of Epidemiology 29(12), 471-477, 2019

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  • Chemical composition of Suspended Particulate Matter (SPM) in Ulaanbaatar, Mongolia  [in Japanese]

    Oyunjargal Gochoobazar , Yamamoto Koshi , Munkhtsetseg Oidov

    Suspended Particulate Matter samples were collected from 2014-2018. …

    Abstracts of Annual Meeting of the Geochemical Society of Japan 66(0), 10, 2019

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  • Modification of Analytical Procedure for Determining Total Organic Carbon in Lake Waters Using a TOC Analyzer  [in Japanese]

    HAYAKAWA Kazuhide , HIROSE Yoshinori , OKAMOTO Takahiro , HICHIRI Syo-ichi , OHARA Tomoyuki , NOTO Kiyuki , INOUE Shinsuke

    <p>水環境における有機汚濁を示す指標の1つである全有機炭素 (TOC) について, 懸濁物を含む試料での分析精度を高めるため, 燃焼酸化式TOC計による分析の前処理や測定方法について検討した。超音波ホモジナイズによって懸濁物を破砕することで, 分散した物質の均質化を促し, TOC測定値の確度を向上させることができた。試料の注入シリンジ内や機器内の経路の減失を少なく設計されたTOC計を …

    Journal of Japan Society on Water Environment 42(6), 259-267, 2019

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  • Investigation of Physical and Chemical Characteristics of Radioactive Aerosols Emitted From Reactor Unit 1 by Fukushima Daiichi Nuclear Power Plant Accident  [in Japanese]

    ONOZAKI Seika , SUEKI Keisuke , TSURUTA Haruo , MORIGUCHI Yuichi , ABE Yoshinari , NAKAI Izumi , ADACHI Kouji , IGARASHI Yasuhito , OURA Yasuji , EBIHARA Mitsuru , MIYASAKA Takafumi , NAKAMURA Hisashi

    … Three radioactive microparticles were separated from particles on filter tape samples collected hourly at a suspended particulate matter (SPM) monitoring site located at ∼25 km north of the Fukushima Daiichi Nuclear Power Plant (FDNPP), after the hydrogen explosion of reactor 1 on 12th March 2011. …

    BUNSEKI KAGAKU 68(10), 757-768, 2019

    IR  J-STAGE  Ichushi Web 

  • Study of indoor air pollution:-1st report-  [in Japanese]

    ARASHIDANI Keiichi , MATSUI Yasuto , BEKKI Kanae

    モデルルーム(面積:20 m<sup>2</sup>, 容積:45 m<sup>3</sup>)において, 6種の異なる暖房器具(3種の石油系暖房器具, 都市ガス及びプロパンガスヒーター, 電気ストーブ)および喫煙により発生する汚染物質の計測を行った。換気条件は, 以下に示す4種類の方法により実施した。1: 換気操作を行わない(Fan off, Do …

    Indoor Environment 22(2), 127-136, 2019

    J-STAGE 

  • PM<sub>2.5</sub>, PM<sub>10</sub>, TSP and heavy metals in house dust collected from evacuation centers in Miyagi Prefecture at the time of the Great East Japan Earthquake  [in Japanese]

    SUZUKI Go , NAKAJIMA Daisuke , NAKAYAMA Shoji , SHIRAISHI Fujio , TAMURA Kenji , TAKIGAMI Hidetaka , NITTA Hiroshi

    東日本大震災は, 2011年3月11日に発生した東北地方太平洋沖地震による災害であり, 海岸線に押し寄せた津波によって甚大な被害をもたらした。津波被災地域の避難所等の居住区では, 津波堆積物等由来の飛散粉じんによる呼吸器疾患等の健康被害が懸念された。本調査では, 宮城県と連携して, 同年5月~9月にかけて, 津波被災地域の避難所5カ所と高等学校1カ所の室内浮遊粉じん(PM<sub>2. …

    Indoor Environment 22(1), 35-43, 2019

    J-STAGE  Ichushi Web 

  • Notice of Retraction  [in Japanese]

    著者の要望により、下記の論文を撤回します。<br><br>記<br><br>高野保英:係留型気球を用いた小型サンプラーによる浮遊粒子状物質(SPM)個数濃度鉛直分布計測, 土木学会論文集G(環境) , Vol.68, No. 7, pp. III_575-III_583, 2012.著者の撤回要望の理由: 論文において使用された浮遊粒子状物質(SPM …

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 74(7), III_536-III_536, 2019

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  • Investigation of the Characteristics of Particulate Matter Suspended in a Subway Station Platform  [in Japanese]

    Okuda Tomoaki , Sakaide Masanobu , Fujioka Kentaro , Tabata Ryoya , Kurosawa Keiichi , Nomura Yuki , Iwata Ayumi , Fujiwara Motoi

    <p>可能な限り多数の測定装置を同時に利用することで、閉鎖的環境の代表例である地下鉄構内の空気中粒子状物質の詳細な特性調査を行った。総粒子個数濃度はCPC、ナノ粒子側粒径分布はSMPS、ミクロン粒子側粒径分布はAPS、ミクロン粒子側粒子個数濃度はOPC、粒子状物質の帯電状態は自作の帯電粒子測定装置K-MACS、PM<sub>2.5</sub>濃度はポータブルPM …

    Journal of Japan Society for Atmospheric Environment / Taiki Kankyo Gakkaishi 54(1), 28-33, 2019

    J-STAGE  Ichushi Web 

  • Teaching material development of Aso volcanic clouds for inquiry learning  [in Japanese]

    飯野 直子

    The purpose of this study is to develop the teaching materials of Aso volcanic clouds for inquiry learning by\using the public information and data. The latest eruptive activity of Aso volcano started …

    熊本大学教育学部紀要 = Bulletin of the Faculty of Education, Kumamoto University (68), 223-230, 2019

    IR 

  • Atmospheric Environment in Kagoshima : Influence of Suspended particulate Matter  [in Japanese]

    坂本 昌弥

    Visio : Research reports (48), 33-40, 2018-12

    IR  DOI 

  • Survey on Dispersion of Suspended Particulate Matter  [in Japanese]

    西村 直也 , 齋藤 敬子

    空気調和・衛生工学会論文集 (254), 59-64, 2018-05

  • AIR STUFFINESS MEASURED WITH CO<sub>2</sub> CONCENTRATION AND PARTICLE MATTER IN ELEMENTARY/SECONDARY SCHOOLS DESIGNATED BY THE BUILDING SANITATION MANAGEMENT AUDIT:Study on air environmental quality in schools using administrative data as an evidence (Part 3)  [in Japanese]

    IWASHITA Go

    … During winter period the difference in the above percentage between elementary and secondary schools was contrastively small.<br> 3) The tendency that the windows are apt to close by introducing cooling equipments might be more detected in secondary schools than elementary schools.<br> 4) The relationship between the number of occupants and the suspended particles concentration was not clear. …

    Journal of Environmental Engineering (Transactions of AIJ) (747), 473-480, 2018-05

    J-STAGE  AIJ 

  • Statistical analysis of dispersal and deposition patterns of volcanic emissions from Mt. Sakurajima, Japan

    Poulidis Alexandros P. , Takemi Tetsuya , Shimizu Atsushi , Iguchi Masato , Jenkins Susanna F.

    … The long-term characteristics of the transport and deposition of ash and SO2 in the area surrounding the volcano are studied here using daily surface observations of suspended particulate matter (SPM) and SO2 and monthly ashfall values. …

    Atmospheric Environment (179), 305-320, 2018-04

    IR 

  • Analysis of heavy metals and Benzo [a] pyrene in ambient total suspended particulate matter using PTFE membrane filter  [in Japanese]

    菊野 裕介 , 森兼 祥太 , 苅舎 里紗 , 西 顕生 , 髙島 京子

    徳島県立保健製薬環境センター年報 = Annual report of Tokushima Prefectural Public Health, Pharmaceutical and Environmental Sciences Center (8), 37-39, 2018

  • Biomagnification Process of Total Mercury in the Macrobenthic Communities in an Enclosed Bay, Isahaya Bay, Kyushu, Japan

    Jaingam Wachirah , Komorita Tomohiro , Ishimatsu Shobu , Takenaka Risa , Umehara Akira , Kobayashi Jun , Yamamoto Megumi , Arizono Koji , Tsutsumi Hiroaki

    … of THg, which was about 4.9 times higher than particulate organic matter (POM) in the overlying water on the sediment. … Its mean THg content was about 4.0 times higher than that of "Low THg content group" that occurred on the sediment surface or outside the sediment, and depended on diets suspended in the water. …

    Japanese Journal of Environmental Toxicology 21(1), 9-20, 2018

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  • Survey on Dispersion of Suspended Particulate Matter  [in Japanese]

    NISHIMURA Naoya , SAITO Keiko

    <p>本報告は浮遊粒子状物質の粒径別個数濃度の関係を対象に行ったものである。一般的な室内の空気中には 10nm から数 10μm に至るまで、3桁以上の粒径分布幅に、個数濃度で7桁近くに広がった形で浮遊微粒子が存在する。そのため、浮遊微 粒子の全体像を観測する事が難しかった。本報告においては、可搬型 SMPS(Scanning Mobility Particle Analyzer)お …

    Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan 43(254), 59-64, 2018

    J-STAGE 

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