検索結果 - 岡山大学学術成果リポジトリ

Liquid-Liquid Extraction Behavior of Inorganic and Organic Anions with Color-Changeable Neutral Extractants

著者	Kubota Hiroki\| 本水昌二\|
発行日	1990-10-10
出版物タイトル	Analytical Sciences
巻	6巻
号	5号
資料タイプ	学術雑誌論文

Batchwise and Flow-Injection Methods for the Spectrophotometric Determination of Anionic Surfactants with 4-(4-N, N-Dimethyl- aminophenylazo)-2-methylquinoline

著者	Kubota Hiroki\| Katsuki Miki\| 本水昌二\|
発行日	1990-10-10
出版物タイトル	Analytical Sciences
巻	6巻
号	5号
資料タイプ	学術雑誌論文

Fluorometric Determination of Boric Acid by High Performance Liquid Chromatography after Derivatization with Chromotropic Acid

著者	大島光子\| 本水昌二\| Jin, Zou\|
発行日	1990-08-10
出版物タイトル	Analytical Sciences
巻	6巻
号	4号
資料タイプ	学術雑誌論文

Spectrophotometric Determination of Calcium with Dicyclohexano- 24-crown-8 and Propyl Orange by Solvent Extraction/Flow Injection Method

著者	本水昌二\| 大島光子\| 米田直生\| 岩知道正\|
発行日	1990-04-10
出版物タイトル	Analytical Sciences
巻	6巻
号	2号
資料タイプ	学術雑誌論文

Contribution of Substituent Groups to the Extractability of Phenols and Benzoic Acids

著者	Hagiwara Takayuki\| 本水昌二\|
発行日	1991-02-10
出版物タイトル	Analytical Sciences
巻	7巻
号	1号
資料タイプ	学術雑誌論文

Separation and Determination of Alkaline-Earth Metal Ions as UV- Absorbing Chelates with EDTA by Capillary Electrophoresis. Determination of Calcium and Magnesium in Water and Serum Samples

著者	本水昌二\| 大島光子\| Matsuda, Shin-ya\| Obata, Yoshimitsu\| Tanaka, Hiroshi\|
発行日	1992-10-10
出版物タイトル	Analytical Sciences
巻	8巻
号	5号
資料タイプ	学術雑誌論文

Color Development Based on the Ion Association of Molybdophosphate with Cationic Dye Chloro-Malachite Green

著者	本水昌二\| Hagiwara Takayuki\| Yokoyama Atsushi\| 大島光子\|
発行日	1993-12-10
出版物タイトル	Analytical Sciences
巻	9巻
号	6号
資料タイプ	学術雑誌論文

Separation and Sensitive Determination of Metal Ions by Capillary Zone Electrophoresis with 2-(5-Nitro-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)phenol

著者	本水昌二\| Mori, Nahoko\| Kuwabara, Masayoshi\| 大島光子\|
発行日	1994-02-10
出版物タイトル	Analytical Sciences
巻	10巻
号	1号
資料タイプ	学術雑誌論文

Ultra-Trace Determination of Phosphate Ion Based on Filtration-Dissolution and Flow-through Spectrophotometric Measurement

著者	本水昌二\| Susanto, Joko P.\| 大島光子\| 三笠博司\| Hori, Yoshikazu\|
発行日	1995-02-10
出版物タイトル	Analytical Sciences
巻	11巻
号	1号
資料タイプ	学術雑誌論文

Thermodynamic Study of Ion-Association Reactions between Aromatic Anions and Tetrabutylammonium Ion in an Aqueous Solution

著者	高柳俊夫\| 本水昌二\|
発行日	1997-10-10
出版物タイトル	Analytical Sciences
巻	13巻
号	5号
資料タイプ	学術雑誌論文

Separation and Direct Photometric Determination of Inorganic Anions by Capillary Zone Electrophoresis Using Suppressed Electroosmosis

著者	高柳俊夫\| Wada Eiko\| 本水昌二\|
発行日	1996-08-10
出版物タイトル	Analytical Sciences
巻	12巻
号	4号
資料タイプ	学術雑誌論文

Ion Association Reaction between Divalent Anionic Azo Dyes and Hydrophobic Quaternary Ammonium Ions in Aqueous Solution as Studied by Capillary Zone Electrophoresis

著者	高柳俊夫\| Tanaka Hiroki\| 本水昌二\|
発行日	1997-02-10
出版物タイトル	Analytical Sciences
巻	13巻
号	1号
資料タイプ	学術雑誌論文

Equilibrium Study on the Ion Association of Monovalent and Divalent Naphtholsulfonates with Tetrabutylammonium Ion in an Aqueous Solution by Capillary Zone Electrophoresis

著者	高柳俊夫\| Ohba Yoshitaka\| Haruki Hiroko\| Wada Eiko\| 本水昌二\|
発行日	1998-04-10
出版物タイトル	Analytical Sciences
巻	14巻
号	2号
資料タイプ	学術雑誌論文

Direct Photometric Determination of Tungstate Ion in the Etching Solutions by Capillary Zone Electrophoresis

著者	高柳俊夫\| Wada Eiko\| 本水昌二\|
発行日	1998-12-10
出版物タイトル	Analytical Sciences
巻	14巻
号	6号
資料タイプ	学術雑誌論文

On-Line Photo-Oxidative Decomposition of Phosphorus Compounds to Orthophosphate and Its Application to Flow Injection Spectrophotometric Determinations of Total Phosphorus in River and Waste Waters

著者	樋口慶郎\| Tamanouchi Hiromitsu\| 本水昌二\|
発行日	1998-10-10
出版物タイトル	Analytical Sciences
巻	14巻
号	5号
資料タイプ	学術雑誌論文

Effects of the Cultivation Method on the Characteristics or Gene Expression Profiles of Aspergillus oryzae Using mCD or DPY Media

JaLCDOI	10.18926/19962
フルテキストURL	Mem_Fac_Eng_OU_44_73.pdf
著者	Imanaka, Hiroyuki\| Tanaka, Soukichi\| Feng, Bin\| Imamura, Koreyoshi\| Nakanishi, Kazuhiro\|
抄録	We used modified Czapek-Dox (mCD) or dextrin-peptone-yeast extract (DPY) media to cultivate a filamentous fungus, Aspergillus oryzae IAM 2706 by three different cultivation methods, i.e., shaking-flask culture (SFC), agar-plate culture (APC), and membrane-surface liquid culture (MSLC), to identify the differences in cultivation behaviors and gene transcriptional profiles. The fungi cultivated by APC or MSLC secreted a greater number of different proteins/enzymes in larger quantities compared with fungi cultivated by SFC, particularly when DPY medium was used. In particular, the amounts of protease secreted by fungi cultivated via MSLC or APC were much greater compared with SFC. When mCD medium was used, α-amylase activity was barely detectable in all cultures while the activity was detected in MSLC and APC in a quantity that was several times higher than that in SFC using DPY medium. SDS-PAGE analysis and N-terminal amino acid sequences confirmed 6 proteins in the culture supernatants when DPY medium was used. Among these proteins oryzin (an alkaline protease) and α-amylase were detected at much higher levels in APC and MSLC compared with SFC, which was consistent with the measured activity of the secreted enzymes. However, when mCD medium was used, only oryzin was detected in significant amounts in MSLC and APC. Microarray analyses of the fungi cultivated by SFC, APC or MSLC using either mCD or DPY media indicated that the gene transcriptional profile of the MSLC sample was similar to that of the APC sample but different from that of the SFC sample. When mCD medium was used, most of the genes that were up-regulated 10-folds or greater in the MSLC sample relative to the SFC sample were unknown or predicted proteins. Transcription of the oryzin gene was only slightly up-regulated in the MSLC sample while transcription of the α-amylase gene was slightly down-regulated. On the other hand, when DPY medium was used, many known genes including the oryzin gene were up-regulated in the MSLC sample versus the SFC sample.
出版物タイトル	Memoirs of the Faculty of Engineering, Okayama University
発行日	2010-01
巻	44巻
開始ページ	73
終了ページ	83
ISSN	1349-6115
言語	英語
論文のバージョン	publisher
NAID	120002309053

Ecient Squaring Algorithm for Xate Pairing with Freeman Curve

JaLCDOI	10.18926/19961
フルテキストURL	Mem_Fac_Eng_OU_44_69.pdf
著者	Nekado, Kenta\| Kato, Hidehiro\| Nogami, Yasuyuki\| Morikawa, Yoshitaka\|
抄録	Recently, pairing–based cryptographies have attracted much attention. For fast pairing calculation, not only pairing algorithms but also arithmetic operations in extension field should be efficient. Especially for final exponentiation included in pairing calculation, squaring is more important than multiplication. This paper proposes an efficient squaring algorithm in extension field for Freeman curve.
出版物タイトル	Memoirs of the Faculty of Engineering, Okayama University
発行日	2010-01
巻	44巻
開始ページ	69
終了ページ	72
ISSN	1349-6115
言語	英語
論文のバージョン	publisher
NAID	120002309070

Ordinary Pairing Friendly Curve of Embedding Degree 3 Whose Order Has Two Large Prime Factors

JaLCDOI	10.18926/19960
フルテキストURL	Mem_Fac_Eng_OU_44_60.pdf
著者	Nogami, Yasuyuki\| Morikawa, Yoshitaka\|
抄録	This paper proposes a method for generating a certain composite order ordinary pairing–friendly elliptic curve of embedding degree 3. In detail, the order has two large prime factors such as the modulus of RSA cryptography. The method is based on the property that the order of the target pairing–friendly curve is given by a polynomial as r(X) of degree 2 with respect to the integer variable X. When the bit size of the prime factors is about 500 bits, the proposed method averagely takes about 15 minutes on Core 2 Quad (2.66Hz) for generating one.
出版物タイトル	Memoirs of the Faculty of Engineering, Okayama University
発行日	2010-01
巻	44巻
開始ページ	60
終了ページ	68
ISSN	1349-6115
言語	英語
論文のバージョン	publisher
NAID	120002309063

High Accuracy Homography Computation without Iterations

JaLCDOI	10.18926/19959
フルテキストURL	Mem_Fac_Eng_OU_44_50.pdf
著者	金谷健一\| Niitsuma Hirotaka\| Rangrajan Prasanna\|
抄録	We present highly accurate least-squares (LS) alternatives to the theoretically optimal maximum likelihood (ML) estimator for homographies between two images. Unlike ML, our estimators are non-iterative and yield solutions even in the presence of large noise. By rigorous error analysis, we derive a “hyperaccurate” estimator which is unbiased up to second order noise terms. Then, we introduce a computational simplification, which we call “Taubin approximation”, without incurring a loss in accuracy. We experimentally demonstrate that our estimators have accuracy surpassing the traditional LS estimator and comparable to the ML estimator.
出版物タイトル	Memoirs of the Faculty of Engineering, Okayama University
発行日	2010-01
巻	44巻
開始ページ	50
終了ページ	59
ISSN	1349-6115
言語	英語
論文のバージョン	publisher
NAID	120002308986

Hyperaccurate Ellipse Fitting without Iterations

JaLCDOI	10.18926/19958
フルテキストURL	Mem_Fac_Eng_OU_44_42.pdf
著者	金谷健一\| Rangrajan Prasanna\|
抄録	This paper presents a new method for fitting an ellipse to a point sequence extracted from images. It is widely known that the best fit is obtained by maximum likelihood. However, it requires iterations, which may not converge in the presence of large noise. Our approach is algebraic distance minimization; no iterations are required. Exploiting the fact that the solution depends on the way the scale is normalized, we analyze the accuracy to high order error terms with the scale normalization weight unspecified and determine it so that the bias is zero up to the second order. We demonstrate by experiments that our method is superior to the Taubin method, also algebraic and known to be highly accurate.
出版物タイトル	Memoirs of the Faculty of Engineering, Okayama University
発行日	2010-01
巻	44巻
開始ページ	42
終了ページ	49
ISSN	1349-6115
言語	英語
論文のバージョン	publisher
NAID	120002309054