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Effects of Cultivation Conditions on Chlorophyll Biosynthesis and Carotenoid Accumulation of the Microalga Chlorella Fusca

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Journal of Chemistry and Chemical Engineering 2013年第5期7卷 431-440页

作者： Kazuo kondo Shin Okamoto Michiaki Matsumoto Department of Chemical Engineering and Materials Science Doshisha University Kyoto 610-0321 Japan

The purpose of the present study is to optimize the cultivation conditions for the productivities of chlorophyll and carotenoid of the microalga chlorellafusca in a flow bioreactor. The effects of CO2 concentration in aeration and light intensity as the culture condition were firstly examined. After the cultivation conditions as to CO2 concentration and light intensity were determined, the effects of the concentrations of KNO3, CH3COONa, NaC1 and MgSO4 in the culture medium on the chlorophyll biosynthesis and carotenoid accumulation ofC. fusca were examined. KNO3 and CH3COONa were used as the nitrogen and the organic carbon sources, respectively. They are very important nutrient sources to the microalgae. In fact, when the concentration of the nutrient sources was increased, the syntheses of chlorophyll and the carotenoid accumulation of the microalgae were promoted. Cfusca can take an organic carbon as the nutrient sources for its own growth, so the cell is activated compared to the case only in an inorganic nourishment sources. Mg2＋ is known as a raw material of chlorophyll and it can promote carotenoid accumulation. However, when it exists in excessive quantity, the microalgae receive a stress and it was difficult for microalgae to uptake such nutrient sources. In this study, it was found that there existed the optimum amounts of KNO3, CH3COONa, NaCI and MgSO4 which should be added to the culture medium.

关键词： Chlorophyll carotenoid microalgae chlorella fusca tubular bioreactor photoautotrophic cultivation.

Measuring Dynamic Correlations of Words in Written Texts with an Autocorrelation Function

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Journal of Data Analysis and Information Processing 2019年第2期7卷 46-73页

作者： Hiroshi Ogura Hiromi Amano Masato kondo Department of Information Science Faculty of Arts and Sciences Showa University Fujiyoshida City Yamanashi Japan

In this study, we regard written texts as time series data and try to investigate dynamic correlations of word occurrences by utilizing an autocorrelation function (ACF). After defining appropriate formula for the ACF that is suitable for expressing the dynamic correlations of words, we use the formula to calculate ACFs for frequent words in 12 books. The ACFs obtained can be classified into two groups: One group of ACFs shows dynamic correlations, with these ACFs well described by a modified Kohlrausch-Williams-Watts (KWW) function;the other group of ACFs shows no correlations, with these ACFs fitted by a simple stepdown function. A word having the former ACF is called a Type-I word and a word with the latter ACF is called a Type-II word. It is also shown that the ACFs of Type-II words can be derived theoretically by assuming that the stochastic process governing word occurrence is a homogeneous Poisson point process. Based on the fitting of the ACFs by KWW and stepdown functions, we propose a measure of word importance which expresses the extent to which a word is important in a particular text. The validity of the measure is confirmed by using the Kleinburg’s burst detection algorithm.

关键词： Autocorrelation Function Word Occurrence Kohlrausch-Williams-Watts Function Stochastic Process Poisson Point Process

Origin of Dynamic Correlations of Words in Written Texts

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Journal of Data Analysis and Information Processing 2019年第4期7卷 228-249页

作者： Hiroshi Ogura Hiromi Amano Masato kondo Department of Information Science Faculty of Arts and Sciences Showa University Fujiyoshida Japan

In a previous study, we introduced dynamical aspects of written texts by regarding serial sentence number from the first to last sentence of a given text as discretized time. Using this definition of a textual timeline, we defined an autocorrelation function (ACF) for word occurrences and demonstrated its utility both for representing dynamic word correlations and for measuring word importance within the text. In this study, we seek a stochastic process governing occurrences of a given word having strong dynamic correlations. This is valuable because words exhibiting strong dynamic correlations play a central role in developing or organizing textual contexts. While seeking this stochastic process, we find that additive binary Markov chain theory is useful for describing strong dynamic word correlations, in the sense that it can reproduce characteristics of autocovariance functions (an unnormalized version of ACFs) observed in actual written texts. Using this theory, we propose a model for time-varying probability that describes the probability of word occurrence in each sentence in a text. The proposed model considers hierarchical document structures such as chapters, sections, subsections, paragraphs, and sentences. Because such a hierarchical structure is common to most documents, our model for occurrence probability of words has a wide range of universality for interpreting dynamic word correlations in actual written texts. The main contributions of this study are, therefore, finding usability of the additive binary Markov chain theory to analyze dynamic correlations in written texts and offering a new model of word occurrence probability in which common hierarchical structure of documents is taken into account.

关键词： Autocorrelation Function Autocovariance Function Word Occurrence Stochastic Process Additive Binary Markov Chain

Epithelial cell adhesion efficacy of a novel peptide identified by panning on a smooth titanium surface

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International Journal of Oral Science 2018年第3期10卷 174-181页

作者： Hidemichi Kihara David M.Kim Masazumi Nagai Toshiki Nojiri Shigemi Nagai Chia-Yu Chen Cliff Lee Wataru Hatakeyama Hisatomo kondo John Da Silva Harvard School of Dental Medicine BostonMAUSA School of Dental Medicine Iwate Medical UniversityIwateJapan University of California San FranciscoCAUSA

Epithelial attachment via the basal lamina on the tooth surface provides an important structural defence mechanism against bacterial invasion in combating periodontal disease. However, when considering dental implants, strong epithelial attachment does not exist throughout the titanium-soft tissue interface, making soft tissues more susceptible to peri-implant disease. This study introduced a novel synthetic peptide(A10) to enhance epithelial attachment. A10 was identified from a bacterial peptide display library and synthesized. A10 and protease-activated receptor 4-activating peptide(PAR4-AP, positive control) were immobilized on commercially pure titanium. The peptide-treated titanium showed high epithelial cell migration ability during incubation in platelet-rich plasma. We confirmed the development of dense and expanded BL(stained by Ln5) with pericellular junctions(stained by ZO1) on the peptide-treated titanium surface. In an adhesion assay of epithelial cells on A10-treated titanium, PAR4-AP-treated titanium, bovine root and non-treated titanium, A10-treated titanium and PAR4-AP-treated titanium showed significantly stronger adhesion than non-treated titanium. PAR4-AP-treated titanium showed significantly higher inflammatory cytokine release than non-treated titanium. There was no significant difference in inflammatory cytokine release between A10-treated and non-treated titanium. These results indicated that A10 could induce the adhesion and migration of epithelial cells with low inflammatory cytokine release. This novel peptide has a potentially useful application that could improve clinical outcomes with titanium implants and abutments by reducing or preventing peri-implant disease.

关键词： PAR OBA Epithelial cell adhesion efficacy of a novel peptide identified by panning on a smooth titanium surface AP

Implementation and Verification of an Application with Active Path Selection in IPv6 Environment

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计算机工程 2002年第S1期28卷 13-21页

作者： Makoto Otani1,Kenzi Watanabe2,Hiroki kondo3 (1.Graduate School of Science and Engineering,Saga University 1, Honjo, Saga 840-8502, Japan, otani@ai.is.saga-u.ac.jp2.Faculty of Science and Engineering, Saga University 1, Honjo, Saga 840-8502, Japan, watana Graduate School of Science and Engineering Saga University 1 Honjo Saga 840-8502 Japan otani@ai.is.saga-u.ac.jp Faculty of Science and Engineering Saga University 1 Honjo Saga 840-8502 Japan watanabe is.saga-u.ac.jp Faculty of Science and Engineering Saga University 1 Honjo Saga 840-8502 Japan kondo_h ai.is.saga-u.ac.jp

The paper proposes a function of active path selection to the destination by users and implemented the function into the FTP application by using the routing header defined in IPv6 specifications. It also develops the "support system for quality selection'', which supports the selection by providing information on each path, experimentally. The details of the function and an implementation of the application also are described .;;

关键词： Active path selectionRouting headerQuality seleetioy

Influence of Zn Diffusion on Bandwidth and Extinction in MQW Electroabsorption Modulators Buried with Semi-Insulating InP

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光学学报 2003年第S1期23卷 439-440页

作者： Takayuki Yamanaka Hideki Fukano Ken Tsuzuki Munehisa Tamura Ryuzo Iga Matsuyuki Ogasawara Yasuhiro kondo Tadashi Saitoh NTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 JAPANNTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 JAPANNTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 JAPANNTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 JAPANNTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 JAPANNTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 JAPANNTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 JAPANNTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 JAPAN

A comprehensive analysis of multi-quantum-well electroabsorption modulators buried with semi-insulating (SI)-InP is presented. We quantitatively demonstrate that suppression of Zn diffusion into the burying and optica... 详细信息

关键词： MQW Influence of Zn Diffusion on Bandwidth and Extinction in MQW Electroabsorption Modulators Buried with Semi-Insulating InP Zn EAM in with of on

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太阳大气锂和铍的衰减

天文学报 1991年第4期32卷 333-342页

作者：熊大闰 Masa-aki kondo Wasaburo Unno 中国科学院紫金山天文台 Faculty of Commerce Senshu UniversityHigashi-mitaTama-kuKawasaki-shiKanagawa 214 Research Institute for Science and Technology Kinki UniversityKowakae 3-chomeHigashi-Osaka-shiOsaka 577

本文根据我们的非局部对流理论,计算了太阳大气锂和铍的衰减.结果表明,对于符合日震学要求的太阳对流包层模型,铍没有明显的衰减,而锂的衰减则稍快了些.观测与理论之间的矛盾似乎表明在对流区底部应存在一个10~3—10~4高斯的中等强度的... 详细信息

本文根据我们的非局部对流理论,计算了太阳大气锂和铍的衰减.结果表明,对于符合日震学要求的太阳对流包层模型,铍没有明显的衰减,而锂的衰减则稍快了些.观测与理论之间的矛盾似乎表明在对流区底部应存在一个10~3—10~4高斯的中等强度的磁场.更精确测定太阳大气湍流速度和温度起伏随高度的变化对判断上述理论推断是非常有意义的.

关键词：太阳大气锂铍衰减

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日本高纯铝的生产

轻金属 1991年第9期 34-36页

作者： Mitsuhiro kondo 王祝堂

1 生产现状高纯铝的应用包括铝制电解电容器与磁盘基片。霍尔-埃鲁法生产的铝的纯度为99.5～99.9％,必须经过进一步的精炼,才能获得高纯铝。

关键词：高纯铝生产日本三层液法偏析法

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激光诱导击穿光谱技术对钢中缺陷的快速表征

冶金分析 2009年第1期29卷 13-16页

作者： kondo Hiroyuki AIMOTO Michihiro YAMAMURA Hideaki TOH Takehiko 日本钢铁联盟高等技术实验室日本钢铁联盟环境及工艺技术中心

激光诱导击穿光谱技术(LIBS)作为一种快速而简单地检查钢表面缺陷的技术,可直接观测到激光脉冲被聚焦于样品之上而感生的等离子体发射物。一个平凸透镜把斑直径大约为1 mm的光量开关Nd:YAG激光器(脉宽:12 ns;重复频率:10 Hz)辐照聚焦于... 详细信息

激光诱导击穿光谱技术(LIBS)作为一种快速而简单地检查钢表面缺陷的技术,可直接观测到激光脉冲被聚焦于样品之上而感生的等离子体发射物。一个平凸透镜把斑直径大约为1 mm的光量开关Nd:YAG激光器(脉宽:12 ns;重复频率:10 Hz)辐照聚焦于样品表面,用来烧蚀样品的一部分,形成一个微等离子体。等离子体的发射由光纤传送至帕邢-龙校格装置多色仪(焦距:500 mm)。在已被流入和流出的氩气排空的空间里,样品被安装在一个二维移动台上进行两点分析——常规分析和缺陷分析。通过比较两个分析结果,可检测到缺陷部分有显著信号强度的元素。由不同类型的夹杂物可以检测出典型的元素,由氧化铝可检测出铝,由保护渣可检测出铝、钙、镁、硅和钠,由矿渣可检测出铝、钙和镁。经证实,由LIBS分析得到的结果与EPMA(电子探针)研究得到的结果一致。因此,导致缺陷的夹杂物的类型都能通过LIBS技术确定属性。当涂层被激光烧蚀去掉后,镀锌钢也可以被直接分析出来。包括制样,该项技术评定时间不到半小时,因此在炼钢过程中,可以迅速采取合适措施。

关键词：钢缺陷激光诱导击穿光谱夹杂物