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Analysis software for upper atmospheric data developed by the IUGONET project and its application to polar science

Advances in Polar Science 2013年第4期24卷 231-240页

作者： Yoshimasa Tanaka Atsuki Shinbori Tomoaki Hori Yukinobu Koyama Shuji Abe No-rio Umemura Yuka Sato Manabu Yagi Satoru UeNo Akiyo Yatagai yasunobu ogawa Yoshizumi Miyoshi National Institute of Polar Research 10-3 Midori-choTachikawaTokyo 190-8518Japan Research Institute for Sustainable Humanosphere GokashoUjiKyoto 611-0011Japan Solar-Terrestrial Environment Laboratory Nagoya UniversityFurou-choChikusaNagoyaAichi 464-8614Japan Data Analysis Center for Geomagnetism and Space Magnetism Graduate School of ScienceKyoto UniversityKi-tashirakawa-Oiwake ChoSakyo-kuKyoto 606-8502Japan International Center for Space Weather Science and Education Kyushu University6-10-1 HakozakiHigashi-kuFukuoka 812-8581Japan Planetary Plasma and Atmospheric Research Center Tohoku UniversityAramaki-aza-aobaAobaSendai 980-8578Japan Kwasan and Hida Observatories Graduate School of ScienceKyoto UniversityKurabashiraKamitakara-choTakayamaGifu 506-1314Japan

To comprehensively understand the Arctic and Antarctic upper atmosphere, it is often crucial to analyze various data that are obtained from many regions. Infrastructure that promotes such interdisciplinary studies on the upper atmosphere has been developed by a Japanese inter-university project called the Inter-university Upper atmosphere Global Observation Network （1UGONET）. The objective of this paper is to describe the infrastructure and tools developed by IUGONET. We focus on the data analysis software. It is written in Interactive Data Language （IDL） and is a plug-in for the THEMIS Data Analysis Software suite （TDAS）, which is a set of IDL libraries used to visualize and analyze satellite- and ground-based data. We present plots of upper atmospheric data provided by IUGONET as examples of applications, and verify the usefulness of the software in the study of polar science. We discuss IUGONET＇s new and unique developments, i.e., an executable file of TDAS that can run on the IDL Virtual Machine, IDL routines to retrieve metadata from the IUGONET database, and an archive of 3-D simulation data that uses the Common Data Format so that it can easily be used with TDAS.

关键词： data analysis software metadata database upper atmosphere ground-based observation polar science,interdisciplinary study IUGONET

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极光电集流产生大气重力波过程中洛伦兹力与焦耳加热相对重要性的统计研究

极光电集流产生大气重力波过程中洛伦兹力与焦耳加热相对重要性的...

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第十一届全国日地空间物理学术讨论会

作者：袁志刚 Ryoichi Fujii Satonori Nozawa yasunobu ogawa 武汉大学电子信息学院 Solar-Terrestrial Environment Laboratory Nagoya University NagayaJapan Solar-Terrestrial Environment Laboratory Nagoya University NagayaJapan Solar-Terrestrial Environment Laboratory Nagoya University NagayaJapan

基于1989年至1991年期间欧洲非相干散射雷达在CPl-I工作模式下28天的观测数据,在101 至125公里高度上,我们研究了极光电集流产生大气重力波过程中洛伦兹力与焦耳加热的相对重要性。统计表明:在120公里以下,洛伦兹力与焦耳加热项的比率...

基于1989年至1991年期间欧洲非相干散射雷达在CPl-I工作模式下28天的观测数据,在101 至125公里高度上,我们研究了极光电集流产生大气重力波过程中洛伦兹力与焦耳加热的相对重要性。统计表明:在120公里以下,洛伦兹力与焦耳加热项的比率随着高度的增加而迅速地减小;而在120公里以上,该比率数随着高度的增加几乎为常数。同时,对这两种物理机制的相对作用而言, 过渡高度大约在116公里,即在此高度以上,焦耳加热对重力波的产生取主要作用,而在此高度以下,重力波则主要由洛伦兹力的作用而产生。在101至125公里高度上,我们也定量地估计了中性风对该比率数的影响。由于中性风引起的该比率数的相对变化小于百分之十,故此,在实际应用中, 中性风对该比率数的影响可以忽略。为了实际应用的需要,我们同时提供了洛伦兹力与焦耳加热项的比率随着高度变化的统计曲线。

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Molecular mechanism underlying the functional loss of cyclindependent kinase inhibitors p16 and p27 in hepatocellular carcinoma

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World Journal of Gastroenterology 2008年第11期14卷 1734-1740页

作者： yasunobu Matsuda Department of Medical Technology NiigataUniversity Graduate School of Health SciencesAsahimachi-dori2-746Niigata 9518518Japan

Hepatocellular carcinoma （HCC） is one of the most common human cancers, and its incidence is still increasing in many countries. The prognosis of HCC patients remains poor, and identification of useful molecular prognostic markers is required. Many recent studies have shown that functional alterations of cellcycle regulators can be observed in HCC. Among the various types of cell-cycle regulators, p16 and p27 are frequently inactivated in HCC and are considered to be potent tumor suppressors, p16, a G1-specific cell-cycle inhibitor that prevents the association of cyclindependent kinase （CDK） 4 and CDK6 with cyclin DI, is frequently inactivated in HCC via CpG methylation of its promoter region, p16 may be involved in the early steps of hepatocarcinogenesis, since p16 gene methylation has been detected in subsets of pre-neoplastic liver cirrhosis patients, p27, a negative regulator of the G1-S phase transition through inhibition of the kinase activities of Cdk2/cyclin A and Cdk2/cyclin E complexes, is now considered to be an adverse prognostic factor in HCC. In some cases of HCC with increased cell proliferation, p27 is overexpressed but inactivated by sequestration into cyclin D1-CDK4-containing complexes. Since loss of p16 is closely related to functional inactivation of p27 in HCC, investigating both p16 and p27 may be useful for precise prognostic predictions in individuals with HCC.

关键词： Hepatocellular carcinoma Cell-cycle regulator Cyclin-dependent kinase inhibitor DNA methylation DNA methyltransferase p16 p27 FoxM1b

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Miniaturization of Bubbles by Shock Waves in Gas-Liquid Two-phase Flow in the Venturi Tube

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Journal of Thermal Science 2021年第3期30卷 1068-1076页

作者： JIANG Xin yasunobu Tsuyoshi NAKAMURA Arisa SHIMAZU Masaki National Institute of Technology Kitakyushu College KitakyushuFukuoka 802-0985Japan

Fine bubbles have been widely applied in many fields such as industry,medical engineering and ***,many attentions have been paid to the study of fine bubble generations in order to increase the yield while decrease the ***,the generation process of fine bubbles is a quite complicated process in which multiple hydrodynamic forces are interacted in the gas-liquid two-phase *** studies focus on the techniques of the converging-diverging nozzle(venturi tube)generator,which is famous for its simple and cheap features,and generates fine bubbles by using the miniaturization phenomenon of bubbles occurring in the venturi ***,the impact conditions on the amount and size of bubbles such as nozzle geometry and bleed air haven’t been investigated *** this work,we implement many experiments on the venturi tube fine bubble generators with different geometries and generating conditions,and evaluate different factors impacting the production components such as the volume and the bubble *** experimental results show that the supersonic flow filed in the venturi tube promotes the miniaturization of the bubbles,and the convergent angle of the nozzle and air bleed have a great impact on the size and volume of bubbles.

关键词： fine bubble shock wave gas-liquid two-phase flow venturi tube

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Characteristic and Mechanism of Pressure Fluctuation Caused by Self-Induced Oscillation of Supersonic Impinging Jet

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Journal of Thermal Science 2013年第2期22卷 123-127页

作者： Tsuyoshi yasunobu Yumiko Otobe Hideo Kashimura Department of Control & Information Systems Engineering Kitakyushu College of Technology

When the underexpanded supersonic jet impinges on the obstacle, it is well known that the self-induced flow os- cillation occurs. This oscillation depends on the pressure ratio in the flowfield, the position of an obstacle and is related with the noise problems of aeronautical and other industrial engineering. The characteristic and the mechanism of self-induced flow oscillation, have to be clarified to control various noise problems. But, it seems that the characteristics of the oscillated flowfield and the mechanism of an oscillation have to be more cleared to control the oscillation. This paper aims to clarify the effect of the pressure ratio and the obstacle position and the mechanism of self-induced flow oscillation by numerical analysis and experiment, when the underexpanded su- personic jet impinges on the cylindrical body. From the result of this study, it is clear that occurrence of the self-induced flow osciUation depends on the pressure balance in the flowfield.

关键词： Supersonic Jet Mach Disk Barrel Shock Flow Oscillation Flow Visualization Numerical Analysis

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Effect of Plate Position and Size for Self-Induced Flow Oscillation of Underexpanded Supersonic Jet Impinging on Perpendicular Plate

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Journal of Thermal Science 2011年第3期20卷 238-241页

作者： Tsuyoshi yasunobu Yumiko Otobe Hideo Kashimura Department of Control & Information Systems Engineering Kitakyushu College of Technology Sii Kokuraminami-ku Kitakyushu-shiFukuoka 802-0985 Japan

When the underexpanded supersonic jet impinges on the obstacle, it is well known that the self-induced flow oscillation occurs at the specific condition of the pressure ratio in the flowfield, the position of an obstacle and so on. This oscillation is related with the noise problems of aeronautical and other industrial engineering so that the characteristic and the mechanism of self-induced flow oscillation have to be cleared to control the various noise problems. But, it seems that the characteristics of the oscillated flowfield and the mechanism of oscillation have to be more clear to control the oscillation. This paper aims to clarify the effect of the plate position and the width for the self-induced flow oscillation of an underexpanded supersonic jet impinging on the perpendicular plate by the experiment and the numerical analysis. From the results, it is clear that the occurring domain of the self-induced flow oscillation and its dimension strongly depend on the plate position and the width.

关键词： Compressible Flow Supersonic Jet Mach Disk Barrel Shock Flow Oscillation

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Numerical Study for Hysteresis Phenomena of Shock Wave Reflection in Overexpanded Axisymmetric Supersonic Jet

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Journal of Thermal Science 2006年第3期15卷 220-225页

作者： Tsuyoshi yasunobu Ken Matsuoka Hideo Kashimura ShigeruMatsuo ToshiakiSetoguchi Corresponding Author Department of Control and Information Systems EngineeringKitakyushuCollege of Technology5-20-1 ShiiKokuraminamiKitakyushuJapan Kitakyushu College of Technology 5-20-1 ShiiKokuraminamiKitakyushuJapan(Student) Kitakyushu College of Technology 5-20-1 ShiiKokuraminamiKitakyushuJapan Department of Mechanical Engineering Saga University1HonjoSagaJapan

When the high-pressure gas is exhausted to the vacuum chamber from the supersonic nozzle, the overexpanded supersonic jet is formed at specific condition. In two-dimensional supersonic jet, furthermore, it is known that the hysteresis phenomena for the reflection type of shock wave in the flow field is occurred under the quasi-steady flow and for instance, the transitional pressure ratio between the regular reflection （RR） and Mach reflection （MR） is affected by this phenomenon. Many papers have described the hysteresis phenomena for underexpanded supersonic jet, but this phenomenon under the overexpanded axisymmetric jet has not been detailed in the past papers. The purpose of this study is to clear the hysteresis phenomena for the reflection type of shock wave at the overexpanded axisymmetric jet using the TVD method and to discuss the characteristic of hysteresis phenomena.

关键词： compressible flow axisymmetric flow supersonic jet regular reflection Mach reflection

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Performance and Internal Flow of Sirocco Fan Using Contra-Rotating Rotors

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Journal of Thermal Science 2008年第1期17卷 35-41页

作者： J.Fukutomi T.Shigemitsu T.yasunobu Institute of Science and Technology The University of Tokushima2-1 Minamijyosanjima-choTokushima 770-8506JAPAN Institute of Science and Technology The University of Tokushima2-1 Minamijyosanjima-choTokushima 770-8506JAPAN Research Associate Graduate School of Advanced Technology and Science The University of Tokushima2-1 Minamijyosanjima-choTokushima 770-8506JAPAN

A sirocco fan using contra-rotating rotors in which an inner rotor is settled inside the sirocco fan rotor and each rotor rotates in an opposite direction was proposed for the purpose of getting the higher pressure and making the structure of a sirocco fan more compact. If the high discharge pressure is obtained with the adoption of the contra-rotating rotors, it could be used for various purposes. Pressure coefficient of a sirocco fan with contra-rotating rotors is 2.5 times as high as the conventional sirocco fan and the maximum efficiency point of contra-rotating rotors shifts to larger flow rate than a conventional sirocco fan. On the other hand, it was clarified from the flow measurement results that circumferential velocity component at the outlet of the outer rotor of contra-rotating ro- tors becomes larger than a conventional one. In the present paper, the performance of a conventional sirocco fan and a sirocco fan with contra-rotating rotors are shown and the internal flow field at the outlet of outer rotor of both cases is clarified. Then, the effect of different kind of contra-rotating rotors on the performance and internal flow field is investigated and the rotor design with higher performance would be discussed.

关键词： Sirocco fan High pressure Contra-rotating rotors Slow angle Circular arc blade Aerofoil blade

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Early colon cancer within a diverticulum treated by magnifying chromoendoscopy and laparoscopy

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World Journal of Gastroenterology 2010年第12期16卷 1545-1547页

作者： Kuang I Fu Yukihiro Hamahata yasunobu Tsujinaka Department of Coloproctology Tokatsu-Tsujinaka Hospital Department of Gastroenterology Juntendo University Nerima Hospital

We report a unique case of intramucosal carcinoma in a tubulovillous adenoma arising from a single *** mucosal resection(EMR)was carried out successfully and completely with the assistance of laparoscopy.A 71-year-old man was admitted to our hospital because of melena and *** colonoscopy showed diverticulosis in the right-sided ***,endoscopy could not exactly detect the bleeding site.A flat elevated polyp was found within a single diverticulum located in the descending colon and diagnosed as an intramucosal carcinoma,as magnifying chromoendoscopy revealed a type Ⅳ pit *** his diverticular bleeding repeated,a rightsided hemicolectomy was decided for treatment,the polyp within the diverticulum was also completely removed by EMR with the assistance of *** a colonic perforation was detected immediately after EMR,the perforation was closed with endoclips intraluminally and also repaired laparoscopically from the serosal ***,the resected lesion was an intramucosal well-differentiated adenocarcinoma and the surgical margin was free of tumor.

关键词： Early colon cancer Diverticulum Magnifying chromoendoscopy Endoscopic mucosal resection Laparoscopy

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Characteristics of Spherical Shock Wave and Circular Pulse Jet Generated by Discharge of Propagating Shock Wave at Open End of Tube

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Journal of Thermal Science 2003年第3期12卷 245-249页

作者： Tsukasa Irie Tsuyoshi yasunobu Hideo Kashimura Toshiaki Setoguchi Kazuyasu Matsuo Department of Mechanical Engineering Kitakyushu National College of Technology ShiiKokuraminami-ku Kitakyushu 802-0985 Japan Department of Control and Information Systems Engineering Kitakyushu National College of Technology Shii Kokuraminami-ku Kitakyushu 802-0985 Japan Department of Mechanical Engineering Saga University Honjo Saga 840-8502 Japan Department of Mechanical Systems and Environmental Engineering Univ. of Kitakyushu1-1 Hibikino Wakamatsu-ku Kitakyushu808-0135 Japan

When the shock wave propagating in the straight circular tube reaches at the open end, the impulsive wave is generated by the emission of a shock wave from an open end, and unsteady pulse jet is formed near the open end behind the impulsive wave under the specific condition. The pulse jet transits to spherical shock wave with the increase in the strength of shock wave. The strength is dependent on the Mach number of shock wave, which attenuates by propagation distance from the open end. In this study, the mechanism of generating the unsteady pulse jet, the characteristics of the pressure distribution in the flow field and the emission of shock wave from straight circular tube which has the infinite flange at open end are analyzed numerically by the TVD method. Strength of spherical shock wave, relation of shock wave Mach number,distance decay of spherical shock wave and directional characteristics are clarified.

关键词： shock wave impulsive wave numerical analysis spherical shock wave TVD method

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