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PREPARATION AND CHARACTERIZATION OF SHISH-KEBAB TYPE LIQUID CRYSTALLINE POLY(p-PHENYLENEVINYLENE)

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Chinese Journal of Polymer Science 2006年第4期24卷 353-361页

作者： Kazuo akagi 郑世军 Institute of Materials Science University of Tsukuba Tsukuba 305-8573Japan College of the Material Science and Engineering Zhengzhou University Zhengzhou 450052 China

Novel shish-kebab type liquid crystalline poly（p-phenylenevinylene） derivatives were synthesized by Stille coupling reaction from 2,5-bis[（4-n-alkoxyl）benzoyloxy]1,4-dibromobenzene （monomer l） and 1,2-bis（tributylstannyl） ethylene （monomer 2）. The polymers with alkoxy groups are soluble in common organic solvents and exhibit blue fluorescence. Both the cast film and the annealed film have large red-shifts in fluorescence spectra and show yellow fluorescence. The polymers with CN and NO2 groups show poor solubility and green fluorescence. All the polymers possess liquid crystalline smectic phases. The melting point （Tm） of the polymers decreases when the length of the alkoxy tails of the mesogenic units increases. The polymers are easily aligned under a magnetic field of 10 Tesla. It is found that the conjugated backbone and LC side chain are aligned perpendicular and parallel to the magnetic field, respectively. The polymers show optical dichroism in fluorescence spectra, suggesting that they are available for advance materials with linear optical polarization.

关键词： Liquid crystalline conjugated polymers Poly(p-phenylenevinylene) Shish-kebab Linearly polarized dichroism Fluorescence.

Plasma-mirror frequency-resolved optical gating for simultaneous retrieval of a chirped vacuum-ultraviolet waveform and time-dependent reflectivity

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High Power Laser Science and Engineering 2016年第2期4卷 80-84页

作者： Ryuji Itakura Takayuki Kumada Motoyoshi Nakano Hiroshi akagi Kansai Photon Science Institute National Institutes for Quantum and Radiological Science and Technology(QST) Nuclear Science and Research Institute Japan Atomic Energy Agency Department of Chemistry Graduate School of ScienceTohoku University

We demonstrate that the methodology of frequency-resolved optical gating(FROG) is applicable to time-resolved reflection spectroscopy of a plasma mirror in the vacuum-ultraviolet(VUV) region. Our recent study [R. Itakura et al. Opt. Express 23, 10914(2015)] has shown that a VUV waveform can be retrieved from a VUV reflection spectrogram of a plasma mirror formed on a fused silica(FS) surface by irradiation with an intense femtosecond laser pulse. Simultaneously, the increase in the reflectivity with respect to the Fresnel reflection of the unexcited FS surface can be obtained as a time-dependent reflectivity of the plasma mirror. In this study, we update the FROG analysis procedure using the least-square generalized projections algorithm. This procedure can reach convergence much faster than the previous one and has no aliasing problem. It is demonstrated that a significantly chirped VUV pulse as long as 1 ps can be precisely characterized.

关键词： frequency-resolved optical gating least-square generalized projections algorithm plasma mirror vacuum ultraviolet

SYNTHESIS AND PROPERITIES OF SHISH-KEBAB-TYPE LIQUID CRYSTALLINE POLY(p-PHENYLENE)S

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Chinese Journal of Polymer Science 2006年第3期24卷 265-271页

作者：郑世军 Kazuo akagi Qun Xua Zi-fa Li Shao-kui Cao Qi-feng Zhou College of the Material Science and Engineering Zhengzhou University Zhengzhou 450052 China Institute of Materials Science University of Tsukuba Tsukuba 305-8573 Japan Department of Polymer Science and Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

Abstract The novel shish-kebab-type liquid crystalline poly（p-phenylene）s were synthesized through Suzuki coupling reaction from 2,5-bis[（4-n-alkoxyl）benzoyloxy]1,4-dibromobenzene （monomer 1） and 1,4-benzenediboronic acid bistrimethylene cyclic ester （monomer 2）. Their structure and properties were characterized by GPC, DSC, X-ray diffraction and polarizing optical microscope （POM）. It was found that the polymers turned to liquid crystalline phase above their melting point. The melting point （Tm） of the polymers decreases when the length of the alkoxy tails of the mesogenic units increases. The mesophase was identified by X-ray diffraction method. The polymers could dissolve in common organic solvents and show strong blue fluorescence. The maximum absorption bands of polymers prepared from annealed films have large red-shift due to the spontaneous orientation of the liquid crystalline side chains. The same phenomena were also observed in the fluorescence spectra.

关键词： Conjugated polymer Liquid crystal Shish-kebab Fluorescence

Taxonomic study of Favolus and Neofavolus gen. nov. segregated from Polyporus (Basidiomycota, Polyporales)

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Fungal Diversity 2013年第1期58卷 245-266页

作者： Kozue Sotome Yasunori akagi Su See Lee Noemia K.Ishikawa Tsutomu Hattori Fungus/Mushroom Resource and Research Center Faculty of AgricultureTottori UniversityMinami 4-101KoyamaTottoriTottori 680-8553Japan Laboratory of plantpathology Faculty of AgricultureTottori UniversityMinami 4-101KoyamaTottoriTottori 680-8553Japan Mycology and Pathology Forestry DivisionForest Research Institute Malaysia(FRIM)Kepong 52109 SelangorMalaysia Coordenação de Biodiversidade Instituto Nacional de Pesquisas da Amazônia(INPA)Av.AndréAraújo2.936PetrópolisCEP 69060-001ManausAMBrazil Kansai Research Center Forestry and Forest Products Research InstituteNagai-KyutaroMomoyamaFushimiKyoto 612-0855Japan

We present a taxonomic study of‘group Favolus’and related species in *** analyses of nurLSU and ITS regions revealed that the infrageneric‘group Favolus’is divided into two main *** within the group share laterally stipitate basidiocarps,with non-crustose stipe surfaces,and are distinguishable by the morphology of the pileus *** clade is characterized by species with hyaline to brown cutis,composed of hyaline to brown agglutinated generative *** other clade accommodates species with radially striate pileus,and lacks any distinct cutis of agglutinated *** propose Neofavolus ***.,typified by ***,for the former clade,and revise the genus Favolus,typified by ***,for the latter *** includes *** and *** ***.,known only from temperate eastern Asia,in addition to *** includes members of the Polyporus grammocephalus complex,the *** complex,and *** reveal that the polypore known as‘***’in Asia includes *** and ***(0 ***),whereas‘***’includes three distinct species;*** from tropical America,and *** and *** from tropical *** descriptions and illustrations are provided for the accepted species in Favolus and Neofavolus.

关键词： Polypores Polyporaceae Type study Wooddecaying fungi

Surgically treated diaphragmatic perforation after radiofrequency ablation for hepatocellular carcinoma

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World Journal of Gastrointestinal Surgery 2017年第12期9卷 281-287页

作者： Sachiko Nagasu Koji Okuda Ryoko Kuromatsu Yoriko Nomura Takuji Torimura Yoshito akagi Department of Gastrointestinal Surgery Kurume University Department of Hepato-biliary and Pancreatic Surgery Kurume University Department of Gastroenterological Medicine Kurume University

We review 6 cases of diaphragmatic perforation, with and without herniation, treated in our institution. All patients with diaphragmatic perforation underwent radiofrequency ablation(RFA) treatments for hepatocellular carcinoma(HCC) performed at Kurume University Hospital and Tobata Kyoritsu Hospital. We investigated the clinical profiles of the 6 patients between January 2003 and December 2013. We further describe the clinical presentation, diagnosis, and treatment of diaphragmatic perforation. The change in the volume of liver and the change in the Child-Pugh score from just after the RFA to the onset of perforation was evaluated using a paired t-test. At the time of perforation, 4 patients had herniation of the viscera, while the other 2 patients had no herniation. The majority of ablated tumors were located adjacent to the diaphragm, in segments 4, 6, and 8. The average interval from RFA to the onset of perforation was 12.8 mo(range, 6-21 mo). The median Child-Pugh score at the onset of perforation(8.2) was significantly higher compared to the median Child-Pugh score just after RFA(6.5)(P = 0.031). All patients underwent laparotomy and direct suture of the diaphragm defect, with uneventful post-surgical recovery. Diaphragmatic perforation after RFA is not a matter that can be ignored. Clinicians should carefully address this complication by performing RFA for HCC adjacent to diaphragm.

关键词： Diaphragmatic perforation Diaphragmatic hernia Radiofrequency ablation Hepatocellular carcinoma

Synthesis of Capsaicin Oligosaccharides and Their Anti-Allergic Activity<br>——Synthesis of Capsaicin Oligosaccharides as Anti-Allergic Food-Additives

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Advances in Chemical Engineering and Science 2012年第1期2卷 45-49页

作者： Kei Shimoda Naoji Kubota Masaaki akagi 不详

The production of β-maltooligosaccharides of capsaicin was investigated using Lactobacillus delbrueckii and cyclodextrin glucanotransferase (CGTase) as biocatalysts. The cells of L. delbrueckii glucosylated capsaicin to give its β-glucoside. The β-glucoside of capsaicin was converted into the corresponding β-maltoside and β-maltotrioside by CGTase. On the other hand, β-melibioside and β-isomaltoside of capsaicin, which were two new compounds, were synthesized by chemical glycosylation. The β-glucoside, β-maltoside, β-melibioside, and β-isomaltoside of capsaicin showed inhibitory effects on IgE antibody production.

关键词： Glycosylation Capsaicin Lactobacillus Delbrueckii CGTase Anti-Allergic Activity

DC Micro-grid Based Distribution Power Generation System

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DC Micro-grid Based Distribution Power Generation System

Status of colitis-associated cancer in ulcerative colitis

第4届国际电力电子及运动控制国际会议

作者： Youichi Ito Hirofumi akagi Mayway Labs Co. Ltd Yokohama 222-0033Japan Tokyo Institute of Technology Meguro-ku TokyoJapan

＜正＞ This paper describes an autonomous-control method for a dc micro-grid system having distribution power generators. This system consists of following five generation and control units;a solar-cell generation unit, a wind-turbine generation unit, a battery energy-storage unit, a flywheel power-leveling unit, and an ac grid-connected power control unit. The proposed control method intended for suppression of circulating current detects only the dc grid voltage. Each unit could be controlled autonomously without communicating each other. This method brings high reliability, high-flexibility and maintenance-free operation to the system. Experimental results from a 10kW-prototype system verify the validity and effectiveness of the proposed control method.

关键词： dc micro-grid Distribution generation Solar-cell generation Wind-turbine generation Power-leveling Flywheel Autonomous control

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World Journal of Gastrointestinal Oncology 2016年第4期8卷 351-357页

作者： Tetsushi Kinugasa Yoshito akagi Department of Surgery Kurume University School of Medicine

Surgical therapy for ulcerative colitis(UC) depends on the medical therapy administered for the patient's condition. UC is a benign disease. However, it has been reported that the rare cases of cancer in UC patients are increasing, and such cases have a worse prognosis. Recently, surgical therapy has greatly changed, there has been quite an increase in the number of UC patients with high-grade dysplasia and/or cancer. These lesions are known as colitis-associated cancer(CAC). The relationship between inflammation and tumorigenesis is well-established, and in the last decade, a great deal of supporting evidence has been obtained from genetic, pharmacological, and epidemiological studies. Inflammatory bowel disease, especially UC, is an important risk factor for the development of colon cancer. We should determine the risk factors for UC patients with cancer based on a large body of data, and we should attempt to prevent the increase in the number of such patients using these newly identified risk factors in the near future. Actively introducing the surgical treatment in addition to medical treatment should be considered. Several physicians should analyze UC from their unique perspectives in order to establish new clinically relevant diagnostic and treatment methods in the future. This article discusses CAC, including its etiology, mechanism, diagnosis, and treatment in UC patients.

关键词： Inflammatory bowel disease Ulcerative colitis Colitis-associated cancer Surgical therapy Colorectal cancer surveillance

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土压盾构施工引起的土层应力-变形分析

施工技术 2016年第17期45卷 109-113页

作者：郑晨李莹 akagi Hirokazu 太原理工大学矿业工程学院山西太原030024 早稻田大学科学与工程学院

为对土压盾构施工过程中土的应力-变形进行研究,利用大型有限元分析软件PLAXIS建立了关于土压盾构机在隧道开挖过程中对地表沉降的影响模型,并运用该模型对盾构过程中土层的应力状态和排水情况进行分析,并在此基础上通过考虑盾构机的推... 详细信息

为对土压盾构施工过程中土的应力-变形进行研究,利用大型有限元分析软件PLAXIS建立了关于土压盾构机在隧道开挖过程中对地表沉降的影响模型,并运用该模型对盾构过程中土层的应力状态和排水情况进行分析,并在此基础上通过考虑盾构机的推进速度、土的固结系数、隧道的覆土厚度和隧道断面4个因素,通过参数试验得出关于判断隧道开挖过程中土层排水情况的方程,并根据具体的隧道工程和地质条件进行数值模拟对方程进行验证。结果表明,地表沉降预测值与实测值吻合较好。

关键词：隧道工程土压平衡盾构固结沉降数值模拟应力变形