Published Papers - EGUSA Nobuyuki

地下水揚水を併用した原位置封じ込め措置の土壌汚染の拡散防止効果

江種伸之, 姜学妍, 峠和男, 西田憲司, 平田健正 （Part： Lead author,　Corresponding author )

地盤工学ジャーナル   6 ( 2 ) 297 - 304   2011  [Refereed]

DOI

Primary Consideration in Calculation Method of Nutrient Emission Factors Based on Mass Balance in Orchard

HINO Ryota, EGUSA Nobuyuki, HIRATA Tatemasa （Part： Corresponding author )

Papers on Environmental Information Science ( Center for Environmental Information Science )  25   269 - 274   2011  [Refereed]

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This study investigates a method to calculate nutrient emission factors using existing in formation based on mass balance in orchard and also evaluated the applicability and availability of the calculated emission factors in the Kinokawa River Watershed. The results showed that it was possible to calculate emission factors for applying for a pollution load and river water quality analysis. Moreover, the advantage of this method is that emission factors could be simply calculated using an amount of fertilizer. That is why the calculation method of emission factors examined in this study makes it easy to estimate the reduction of nutrient runoff based on managing the amount of fertilizer.

DOI

茨城県神栖市で起きた有機ヒ素化合物による地下水汚染機構の解明に関する数値解析

渡辺俊一, 江種伸之, 平田健正, 横山尚秀, 山里洋介, 森田昌敏 （Part： Corresponding author )

地盤工学ジャーナル   6 ( 2 ) 383 - 394   2011  [Refereed]

紀の川流域におけるエサキアメンボのパッチ占有モデルによるメタ個体群存続の予測

江種伸之, 徳田裕二, 中尾史郎 （Part： Lead author,　Corresponding author )

環境システム研究論文集   38   43 - 52   2010  [Refereed]

茨城県神栖市で起きた有機ヒ素化合物による地下水汚染の実態解明

渡辺俊一, 江種伸之, 平田健正, 横山尚秀, 山里洋介, 森田昌敏 （Part： Corresponding author )

地盤工学ジャーナル   5 ( 1 ) 147 - 157   2010  [Refereed]

DOI

帯水層中のメチロシスティス属M株の挙動とトリクロロエチレン分解に関する数値解析

長谷川直紀, 江種伸之, 山本秀一, 川原恵一郎, 平田健正, 岩崎一弘, 矢木修身 （Part： Corresponding author )

水工学論文集   54   613 - 618   2010  [Refereed]

有機ヒ素化合物による地下水汚染の挙動解析

渡辺俊一, 姜学妍, 江種伸之, 平田健正, 横山尚秀, 山里洋介, 森田昌敏 （Part： Corresponding author )

地盤の環境・計測技術に関するシンポジウム2009論文集     63 - 70   2009  [Refereed]

紀の川流域の生息地におけるエサキアメンボLimnoporus esakiiの空間分布

徳田裕二, 中尾史郎, 江種伸之 （Part： Last author,　Corresponding author )

環境システム研究論文集   37   39 - 47   2009  [Refereed]

農業用水取水ルールを考慮した分布型水文流出モデルによる紀の川流出解析

石塚正秀, 江種伸之 （Part： Last author )

水工学論文集   52   391 - 396   2008  [Refereed]

DOI

太陽熱を利用した農地消毒時の土中温度の変化特性

江種伸之, 加瀬広大, 山本秀一, 増田吉彦, 平田健正 （Part： Lead author,　Corresponding author )

土木学会論文集B   64 ( 4 ) 267 - 279   2008  [Refereed]

DOI

帯水層におけるメタン資化性細菌メチロシスティス属M株の挙動解析

長谷川直紀, 江種伸之, 山本秀一, 川原恵一郎, 平田健正, 岩崎一弘, 矢木修身 （Part： Corresponding author )

地盤の環境・計測技術に関するシンポジウム2008論文集     103 - 106   2008  [Refereed]

帯水層における塩素化エチレン類の自然減衰特性解析

江種伸之, 丹波豊, 山本秀一, 平田健正 （Part： Lead author,　Corresponding author )

水工学論文集   51   493 - 498   2007  [Refereed]

Metapopulation structure of water-strider, Limnoporus esakii (insecta: gerridae) in the Kinokawa River Watershed

中尾史郎, 江種伸之 （Part： Last author )

Papers on environmental information science ( 環境情報科学センター )  21   99 - 104   2007  [Refereed]

DOI

太陽熱消毒におよぼす土中熱伝導性の影響

加瀬広大, 江種伸之, 増田吉彦, 平田健正 （Part： Corresponding author )

地盤の環境・計測技術に関するシンポジウム2007論文集     68 - 73   2007  [Refereed]

PARALLELIZATION OF A SUBSURFACE MASS TRANSPORT NUMERICAL SIMULATION ON PC CLUSTER USING MPI

EGUSA Nobuyuki, SAITO Shoichi, HIRATA Tatemasa （Part： Lead author,　Corresponding author )

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) ( Japan Society of Civil Engineers )  63 ( 1 ) 29 - 38   2007  [Refereed]

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Throughput of a personal computer (PC) cluster, which is a parallel processing system, is approaching a super computer level due to network speed and PC performance improvements. This study evaluated the availability of a PC cluster on a mass transport numerical simulation in subsurface. Method of Characteristic (MOC) was used as a numerical simulation method. The sequential program of MOC was parallelized using Message Passing Interface (MPI), which is a library specification for message-passing in a distributed memory system. The computing speed of eight node PC cluster was six times faster than that of sequential processing. These result in that the parallelization technique using MPI was effective in shortening of the subsurface mass transport simulation by MOC.

DOI

ソイルセメント系連続地中壁の物理・力学特性と地震応答解析による耐震性能評価

日置和昭, 平田健正, 西垣誠, 江種伸之, 櫛原信

廃棄物学会論文誌   18 ( 4 ) 230 - 239   2007  [Refereed]

土中熱伝導の水分依存性とその定式化

加瀬広大, 江種伸之, 山本秀一, 増田吉彦, 平田健正 （Part： Corresponding author )

地盤の環境・計測技術に関するシンポジウム2006論文集     53 - 58   2006  [Refereed]

PREDICTION OF INFLUENCE RADIUS OF VACUUM PUMPING IN UNSATURATED SOIL AND EVALUATION OF AIR PERMEABILITY BY IN SITU VACUUM TEST

HIBI Yoshihiko, JINNO Kenji, EGUSA Nobuyuki, KAWABATA Junichi, SIMOMURA Masanori

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) ( Japan Society of Civil Engineers )  62 ( 2 ) 488 - 501   2006  [Refereed]

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The coefficient of air permeability and the influence radius are the important indices for the design of remediation of the polluted unsaturated soil. At present, several theoretical formulas have been proposed to estimate the air permeability. However, neither theoretical formulas for estimating air permeability nor the influence radius of vacuum test affected by the volumetric water content are clarified.<br>In the present paper, the solutions by theoretical formulas were compared with numerical solution by the finite element method which considers the compressibility of air and the spatial distribution of volumetric water content. It was revealed that the theoretical formulas were applicable to the actual unsaturated soil where the in situ vacuum test was conducted.

DOI

井戸からのガス吸引による土中空気の定常状態流れの理論解と有限要素法の数値解の比較

日比義彦, 神野健二, 江種伸之, 川端淳一, 下村雅則

土木学会論文集G   62 ( 4 ) 391 - 402   2006  [Refereed]

In-Situ Degradation Effects of Chlorinated Ethenes using Bioremediation

N.Egusa, S.Yamamoto, T.Hirata, K.Kawahara, T.Ozawa, O.Nakasugi （Part： Lead author,　Corresponding author )

Journal of Hydroscience and Hydraulic Engineering   24 ( 1 ) 83 - 92   2006  [Refereed]