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High Decomposition Method of PFC

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High Decomposition Method of PFC

第四届中美化学工程会议和第三届中日化工研讨会合并的三边化学工程大会

作者： HeeJoon Kim Wataru Minami Ikuo kawaguchi Shinya Hayashi Toyohashi University of Technology Japan

PFCs(Perfluoro compounds) is used as cleaning gas and etching gas at semiconductor industry. Exhausted PFC have strong effect to global worming. For example, exhausted CF4 have very long life at atmosphere (50,000 years), then it effect to global worming 6500 times compare with CO2. Recently, reduction of exhaust PFC is required. High decomposition method of PFC was developed in this research. CF4 have most strong bond among PFC, then CF4 was chosen to investigate of decomposition characterization of PFC.

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核蒸汽发生系统部件用的大型整体钢锻件的制造

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大型铸锻件 1986年第3期 64-72,80页

作者： kawaguchi 罗安

700MW加压重水堆的压力容器用锻件,已经成功地研制出来了。这一锻件由7个主要件和接管段组成,总重量约为965t。其主要参数如下: 1)法兰:外径为8440mm,重量达238t(最大),要求钢锭重量为570t; 2)筒体和过渡段:外径约为8000mm,高度很大; 3... 详细信息

700MW加压重水堆的压力容器用锻件,已经成功地研制出来了。这一锻件由7个主要件和接管段组成,总重量约为965t。其主要参数如下: 1)法兰:外径为8440mm,重量达238t(最大),要求钢锭重量为570t; 2)筒体和过渡段:外径约为8000mm,高度很大; 3)球形封头:直径为6800mm,厚度为4600mm,成型前毛坯锻件的直径为8000mm,厚度为550mm。锻件所用材料为20MnMoNi55(相当于SA508C1.3),尽管这一锻件是迄今为止所生产过的最大最重的锻件,但其制造过程及质量均令人满意。这是在生产技术上(如炼钢、锻造和热处理)取得了成功的新发展的结果。这些制造技术对大型厚壁钢锻件的质量至关重要。本文对上述大型整体锻件的制造及性能作了说明,并概述了二十多年来超大型锻件的制造工艺。

关键词：制造过程钢锻件系统部件蒸汽生产技术加压重水堆压力容器球形封头

可加工性理论、英语作为第二语言的问句和词汇学习

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中国语言战略 2015年第1期2卷 170-185页

作者： Satomi kawaguchi School of Humanities&Communication Arts Bilingualism Research LabMARCS InstituteUniversity of Western SydneyAustralia

本文通过二语习得(SLA)一个横断面的调查研究介绍可加工性理论(PT)如何运用在二语习得的研究中。例如,英语作为第二语言(ESL)的问句结构(包括一般疑问句和特殊疑问句)和词汇学习的关系,本文首先介绍了PT的重要组成部分。其次介绍了9名... 详细信息

本文通过二语习得(SLA)一个横断面的调查研究介绍可加工性理论(PT)如何运用在二语习得的研究中。例如,英语作为第二语言(ESL)的问句结构(包括一般疑问句和特殊疑问句)和词汇学习的关系,本文首先介绍了PT的重要组成部分。其次介绍了9名在澳大利亚L1为日语L2为英语学习者的横断面研究,这9名受试者是从参加标准化词汇量测试的22名测试者中按照测试成绩高、中、低各抽取3名而来,此外,这9名受试者参加了交际口语表达任务,所产出的语料用于第二语言言语分析,每位受试者的言语产出按照PT对英语为第二语言的问句结构的句法阶段进行分析,研究结果表明,词汇和语法的发展是密切相关的。中低等词汇量ESL学习者在问句结构方面存在一定问题,如助动词的选择,另一方面,高词汇量的学习者能够应对本研究中所调查的整体范围的问句结构。问句结构被证实为ESL学习者语法发展的一个关键指标。

关键词：第二语言习得可加工性理论问句英语作为第二语言

Laparoscopic Observations in Acquired Inguinal Hernia before and after Robotic-Assisted Laparoscopic Prostatectomy

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Surgical Science 2014年第4期5卷 170-175页

作者： Masahiko kawaguchi Yoshifumi Kadono Masanari Shimada Hideki Moriyama Norihiko Ishikawa Go Watanabe Departments of General and Cardiothoracic Surgery Kanazawa University Kanazawa Japan Departments of Urology Kanazawa University Kanazawa Japan

Background: The mechanism of the development of acquired inguinal hernia, especially indirect inguinal hernia, is not well known. Although anatomical studies have been performed to explain development of inguinal hernia, they have mainly involved autopsy or temporal findings at the time of hernioplasty. To elucidate the pattern of development of acquired inguinal hernia, we studied the occurrence of inguinal hernia after robotic-assisted laparoscopic prostatectomy (RALP). Methods: From March 2009 to November 2011, RALP for prostatic cancer was performed on 60 patients in our institute. The RALP was performed by one urologist using the da Vinci Surgical System. The postsurgical development of inguinal hernia was diagnosed based on patients’ symptoms. Seven patients were treated with laparoscopic hernioplasty, and one underwent mesh-plug repair. Using video recordings, the laparoscopic findings during RALP and laparoscopic hernioplasty were compared among all patients. Results: Seven of 59 patients (11.9%) developed an inguinal hernia. One patient had a pre-existing pantaloon inguinal hernia at the time of RALP. Eleven inguinal lesions in the seven patients who underwent laparoscopic hernioplasty were reviewed, and all were indirect inguinal hernias. Conclusion: A main factor in the development of inguinal hernia after RALP could be a combination of outer-side intact layers and inner-side hard scar of the inguinal ring, which seems like “out swing door”.

关键词： Acquired Inguinal Hernia Laparoscopic Hernioplasty Robotic-Assisted Laparoscopic Prostatectomy

DESIGN STUDY AND EVALUATION OF ADVANCED FUEL FABRICATION SYSTEMS FOR FBR FUEL CYCLE

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DESIGN STUDY AND EVALUATION OF ADVANCED FUEL FABRICATION SYS...

第十三届国际核工程大会

作者： Koichi kawaguchi Takashi Namekawa Yoshihiro Suzuki Shingo Haraguchi Japan Nuclear Cycle Development Institute

As a part of the feasibility study on commercialization of fast breeder reactor cycle systems, the plant concept for advanced fuel fabrication system which can prepare fuel meat composed of low-decontaminated fissile and minor actinide by remote-handling systems in hot-cell facility has been constructed achieving economical improvement, decrease in the environmental burden, better resource utilization, and proliferation resistance, etc. For the simplified oxide fuel pelletizing method and the sphere packing

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数字电视的发展趋势

电子设计应用 2006年第9期 18-18,20,22,24,26,28页

作者： Jun kawaguchi 卓然公司

引言全球电视制造业正面临着巨大变化,传统的模拟信号技术正逐渐被数字信号所代替,变化的市场为OEM厂商创造了巨大的商机,同时也带来了严峻的挑战.本文主要介绍了全球数字电视市场的现状、主流技术及OEM厂商们在全球消费电子市场上必须... 详细信息

引言全球电视制造业正面临着巨大变化,传统的模拟信号技术正逐渐被数字信号所代替,变化的市场为OEM厂商创造了巨大的商机,同时也带来了严峻的挑战.本文主要介绍了全球数字电视市场的现状、主流技术及OEM厂商们在全球消费电子市场上必须面对的挑战.

关键词：数字电视发展趋势电视市场数字信号信号技术电子市场 OEM 制造业全球流技术

Long-Term Effect of Photoperiod, Temperature and Feeding Regimes on the Respiration Rates of Antarctic Krill (<i>Euphausia superba</i>)

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Open Journal of Marine Science 2013年第2期3卷 40-51页

作者： Matthew Brown So kawaguchi Steven Candy Toshihiro Yoshida Patti Virtue Steve Nicol Australian Antarctic Division Kingston Australia Australian Antarctic Division Kingston Australia Antarctic Climate and Ecosystems Cooperative Research Centre Hobart Australia Institute for Antarctic and Marine Studies University of Tasmania Hobart Australia Institute of Antarctic and Southern Ocean Studies University of Tasmania Hobart Australia Institute of Antarctic and Southern Ocean Studies University of Tasmania Hobart Australia Australian Antarctic Division Kingston Australia Antarctic Climate and Ecosystems Cooperative Research Centre Hobart Australia

Antarctic krill is thought to undergo an annual cycle of biological processes to cope with seasonal changes in their environment. The question of whether, and to what degree, seasonal environmental parameters such as photoperiod, food availability and temperature govern metabolism in krill is not clear. In this long-term laboratory study, respiration rates were determined in krill incubated under simulated natural light cycle or total darkness, subjected to fed or starved conditions and on krill kept at different temperatures (-1°C, 1°C and 3°C). There was a strong and significant increasing trend of respiration rates with month in all experimental treatments. In August (late winter), the mean respiration rates ranged between 0.22 - 0.35 μL O2 ***-1 for krill in both simulated seasonal light and complete darkness, and 0.25 - 0.26 μL O2 ***-1 for both fed and starved krill. Mean maximal respiration rates were recorded in October and December for all light and feeding treatments (0.46 - 0.56 μL O2 ***-1). Mean respiration rates for krill in the temperature treatments ranged between 0.24 - 0.30 μL O2 ***-1 in September reaching mean maximal rates in November and February (0.60 - 0.71 μL O2 ***-1). The covariate total length of krill was found to be non-significant and there was generally no significant interaction of experimental treatment with month and only for photoperiod comparison was the treatment main effect significant. The dark treatment gave higher respiration rates, and this needs careful interpretation. Results here suggest that, although light, food availability and temperature significantly affect metabolic rates,

关键词： Antarctic Krill Aquarium Maturity Endogenous Rhythm Overwintering Strategy

Complex Structure of Ions Coordinated with Hydrophilic Polymer.10:

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Complex Structure of Ions Coordinated with Hydrophilic Polym...

作者： A.kawaguchi Y.Gotoh Y.Morimoto Facuty of Text.Sci.and Tech. Shinshu Univ

INTRODUCTION:We have reported in situ composite structure through "secondary doping" by diffusion of metallic ions into the iodinated hydrophilic polymers. Polyiodide ions,In(n = 3,5,,),which have been doped into the polymers previously,enhances following diffusion of other molecules or ions even through solution process at room ***,if some precipitation process of inorganic salt advances there, produced salt grains can be regarded as fillers grown up from ions and stabilized in the polymers. Consequently,such procedure provides hybrid(nano)

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Full Penetration Welding of Thick Steel Plates Using 20 kW CO2 Laser

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Full Penetration Welding of Thick Steel Plates Using 20 kW C...

第二届先进钢铁结构材料国际会议

作者： TSUKAMOTO Susumu ARAKANE Goro HONDA Hiroshi kawaguchi Isao Steel Research Center National Institute for Materials Science Tsukuba Ibaraki Japan

Full penetration laser welding of thick steel plates has been carried out using a 20 kW CO laser facility. Dynamic keyhole behaviour has been observed using an x-ray transmission imaging system to elucidate the formation mechanism of the weld defects. Relatively wide optimum power range to prevent the porosity can be attained when the back surface is shielded by inert gas. However, hot cracking susceptible weld sections are formed due to significant perturbation of the keyhole caused by indissoluble back shielding gas. The keyhole is stabilised if the back surface is not shielded by inert gas. However, large porosities are easily formed near the bottom due to super saturation of nitrogen, which is supplied from the plasma formed on the back surface. A small amount of aluminium addition in the base metal is effective to prevent the porosity due to denitrification effect of aluminium, even if the back surface is not shielded.

关键词： Laser Welding Porosity Hot Cracking Keyhole Denitrification