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The Influence of Iron on Ammonium Ion Generation from Nitrate Ion in Liquid Phase

Plasma Science and Technology 2005年第1期7卷 2673-2677页

作者： Youhei Kinoshita Naoki Okumura kazunori takashima Shinji Katsura Akira Mizuno Department of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 JapanDepartment of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 JapanDepartment of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 JapanDepartment of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 JapanDepartment of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 Japan

Flue gas cleaning in discharge plasma process has been studied intensivelyand we have tried to remove the NO_x and SO_2 using the wet-type plasma reactor. In this system, NOis oxidized to NO_2 and absorbed as NO_3^-, and SO_2 is absorbed as SO_3^(2-) and oxidized in theliquid to SO_4^(2-). But the concentration of NO_3^- was saturated and the absorption of NO_x andSO_2 was inhibited. Then, the reduction of NO_3^- in the liquid is required. We examined thereductive reaction of NO_3^- to NH_4^+ using discharge above the liquid surface then the pH value ofthe liquid was changed to alkaline slightly. When the Fe plate was used as a ground electrode inthe liquid, NH_4^+ was generated. Then, the relation between the generation of NH_4^+ and Fe ions(Fe^(2+) and Fe^(3+)) was studied. When Fe^(2+) was presented in the liquid, NH_4^+ was generatedand Fe^(2+) was oxidized to Fe^(3+). Fe^(2+) is required to generate NH_4^+ from NO_3^-. When NH_4^+was generated from NO_3^-, both the calculated pH value from NH_4^+ concentration and the measuredpH value indicated a similar value. From these results, the discharge above the liquid surface waseffective to convert NO_3^- to NH_4^+ and the reductive reaction leads to more absorption of NO_3^-.These results showed that the wet-type plasma reactor is effective for NO_x and SO_2 removalsystem.

关键词： discharge plasma reduction nitric acid ammonium

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The Statistical Experimental Design for Chemical Reactors Modeling

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Applied Mathematics 2016年第14期7卷 1534-1546页

作者： Graciela Prieto Oscar Prieto Teresa Unzaga Carlos Gay kazunori takashima Akira Mizuno The Universidad Nacional de Tucumán San Miguel de Tucumán Argentina The Toyohashi University of Technology Toyohashi Japan

The Statistical Experimental Design techniques are the most powerful tools for the chemical reactors experimental modeling. Empirical models can be formulated for representing the chemical behavior of reactors with the minimal effort in the necessary number of experimental runs, hence, minimizing the consumption of chemicals and the consumption of time due to the reduction in the number of experimental runs and increasing the certainty of the results. Four types of nonthermal plasma reactors were assayed seeking for the highest efficiency in obtaining hydrogen and ethylene. Three different geometries for AC high voltage driven reactors, and only a single geometry for a DC high voltage pulse driven reactor were studied. According to the fundamental principles of chemical kinetics and considering an analogy among the reaction rate and the applied power to the plasma reactor, the four reactors are modeled following the classical chemical reactors design to understand if the behavior of the nonthermal plasma reactors can be regarded as the chemical reactors following the flow patterns of PFR (Plug Flow Reactor) or CSTR (Continuous Stirred Tank Reactor). Dehydrogenation is a common elimination reaction that takes place in nonthermal plasmas. Owing to this characteristic, a paraffinic heavy oil with an average molecular weight corresponding to C15 was used to study the production of light olefins and hydrogen.

关键词： Chemical Reactors Modeling Statistical Experimental Designs Nonthermal Plasma Chemical Reactors

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介质阻挡放电协同铜氧化物催化剂脱除NO_x反应研究

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科技导报 2008年第23期26卷 52-55页

作者：陈明功颜凌燕汪晓艳刘涛陈明强高岛和则水野彰安徽理工大学化学工程学院安徽淮南232001 丰桥技术科学大学生态工程系日本爱知丰桥4418580

研究了以煤基活性炭为载体的铜氧化物催化剂在阻挡介质放电反应器中对NOx脱除效率的影响规律,以及催化剂在反应前后的变化和主要产物。研究结果表明,以煤基活性炭为载体的铜氧化物催化剂协同阻挡介质放电反应器,可使NO有效氧化为NO2,对... 详细信息

研究了以煤基活性炭为载体的铜氧化物催化剂在阻挡介质放电反应器中对NOx脱除效率的影响规律,以及催化剂在反应前后的变化和主要产物。研究结果表明,以煤基活性炭为载体的铜氧化物催化剂协同阻挡介质放电反应器,可使NO有效氧化为NO2,对NOx也有明显的脱除效果,使NO2进一步氧化为NO3-,阻止了等离子体状态下活性氧自由基自身结合生成氧气的循环反应;该催化剂对氮氧化物具有吸附和储存功能,提高了反应物浓度和反应速率。随着介质阻挡放电反应器输入能量的增加,氮氧化物脱除效率增大,该能量可有效产生等离子体,提高活性粒子和氧自由基浓度,同时提高催化剂的吸附和催化活性。

关键词：介质阻挡放电脱除NOx 铜系催化剂活性炭载体

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Analysis of Degenerative Discs in Lumbar Spondylolisthesis Using MRI T2 Mapping

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Open Journal of Radiology 2012年第3期2卷 77-80页

作者： Tsuneo Takebayashi Hiroyuki takashima Mitsunori Yoshimoto Yoshinori Terashima Hajime Tsuda kazunori Ida Toshihiko Yamashita Department of Orthopedic Surgery School of Medicine Sapporo Medical University Sapporo Japan

Background: Spinal instability, including lumbar degenerative spondylolisthesis (DS), mainly results from degeneration of intervertebral discs (IVD) and the facet joints (FJ). Characterization of the relationship between IVD degeneration in cases of lumbar degenerative spondylolisthesis (DS), and T2 values may be useful for accurate noninvasive evaluation and subsequent treatment. Thus, the goal of this study was to measure T2 values of IVDs in cases with (DS) and without (NS) spondylolisthesis, and to characterize changes of IVDs in DS. Methods: A total of 40 subjects who presented with L4 spondylolisthesis comprised the DS group. Another 40 subjects who did not have lumbar spondylolisthesis, constituted the NS group. T2 values of IVDs were measured and compared in these groups. Results: T2 values for IVDs tended to be lower in the DS group than in the NS group, and these values were significantly different (p < 0.01) within the anterior annulus fibrosus (AF). No significant differences in T2 values between Meyerding grades I and II were observed in any areas of IVDs. Conclusions: It is speculated that in the early stages, the degeneration of the anterior AF develops and is related to the onset of lumbar spondylolisthesis, while in later stages, degeneration of facet joints influences the progression of spondylolisthesis.

关键词： Degenerative Spondylolisthesis Intervertebral Disc T2 Mapping

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Development of risky varices in alcoholic cirrhosis with a well-maintained nutritional status

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World Journal of Hepatology 2015年第21期7卷 2358-2362页

作者： Hirayuki Enomoto Yoshiyuki Sakai Yoshinori Iwata Ryo Takata Nobuhiro Aizawa Naoto Ikeda Kunihiro Hasegawa Chikage Nakano Takashi Nishimura kazunori Yoh Akio Ishii Tomoyuki takashima Hiroki Nishikawa Hiroko Iijima Shuhei Nishiguchi Division of Hepatobiliary and Pancreatic Disease Department of Internal Medicine Hyogo College of Medicine

AIM: To compare the nutritional status between alcoholic compensated cirrhotic patients and hepatitis C virus(HCV)-related cirrhotic patients with portal ***: A total of 21 patients with compensated cirrhosis(14 with HCV-related cirrhosis and seven with alcoholic cirrhosis) who had risky esophageal varices were investigated. In addition to physical variables, including the body mass index, triceps skinfold thickness, and arm-muscle circumference, the nutritional status was also assessed using the levels of pre-albumin(pre-ALB), retinol-binding protein(RBP) and non-protein respiratory quotient(NPRQ) measured with an indirect ***: A general assessment for the nutritional status with physical examinations did not show a significant difference between HCV-related cirrhosis and alcoholic cirrhosis. However, the levels of pre-ALB and RBP in alcoholic compensated cirrhotic patients were significantly higher than those in HCV-related compensated cirrhotic patients. In addition, the frequency of having a normal nutritional status(NPRQ ≥ 0.85 and ALB value > 3.5 g/d L) in alcoholic compensated cirrhotic patients was significantly higher than that in HCV-related compensated cirrhotic ***: According to our small scale study, alcoholic compensated cirrhotic patients can develop severe portal hypertension even with a relatively well-maintained liver function and nutritional status compared with HCV-related cirrhosis.

关键词： Alcoholic liver cirrhosis Hepatitis C virus Rapid-

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