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Comparative effect of electroacupuncture and moxibustion on the expression of substance P and vasoactive intestinal peptide in patients with irritable bowel syndrome

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Journal of Traditional Chinese Medicine 2015年第4期35卷 402-410页

作者： Lu Zhenzhong Yin Xiaojun Teng Weijun Chen Yuehua Sun Jie Zhao Jimeng Wang Anqi Bao Chunhui Shi Yin Department of Physical Therapy and Acupuncture Jinhua Hospital of Zhejiang University Department of Medical Clinic Yueyang Chinese and Western Medicine Integrated Hospital affiliated to Shanghai University of Traditional Chinese Medicine Department of Gastroenterology Jinhua Hospital of Zhejiang University

OBJECTIVE: To compare the impacts of electroacupuncture(EA) and moxibustion(mox) on the primary gastrointestinal symptoms and the expressions of colonic mucosa-associated neuropeptide substance P(SP) and vasoactive intestinal peptide(VIP)in patients with either diarrhea-predominant or constipation-predominant irritable bowel syndrome(IBS-D and IBS-C,respectively).METHODS: Eighty-five IBS patients were randomly allocated to the EA and mox groups. Zusanli(ST 36)and Shangjuxu(ST 37) were selected as acupoints for electroacupuncture or warm moxibustion treatment once a day for 14 consecutive days. Before and after the treatment sessions,a Visual Analog Pain Scale and the Bristol Stool Form Scale were used to evaluate gastrointestinal symptoms. There were four dropout cases,leaving 81 participants(41 with IBS-D and 40 with IBS-C) who volunteered to undergo colonoscopy before and after the treatment sessions. During colonoscopy,sigmoid mucosa were collected to detect SP and VIP expression using immunohistochemistry assay.RESULTS: Both EA and mox treatments were effective at relieving abdominal pain in IBS-D and IBS-C patients. However,mox was more effective at reducing diarrhea in IBS-D patients,whereas EA was more effective at improving constipation in IBS-C patients. EA and mox treatments both down-regulated the abnormally increased SP and VIP expression in the colonic mucosa,with no significant difference shown between the two treatments.CONCLUSION: Both EA and mox treatments are effective at ameliorating gastrointestinal symptoms by reducing SP and VIP expression in the colonic mucosa of IBS patients.

关键词：血管活性肠肽综合征患者电针艾灸免疫组织化学 mox VIP

Hetero-nanostructure of silver nanoparticles on MO_x(M=Mo,Ti and Si) and their applications

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Science China Chemistry 2011年第6期54卷 865-875页

作者： DONG WenJun ZHAO HaiXin LI ChaoRong MEI Jie CHEN BeYong TANG WeiHua SHI Zhan FENG ShouHua Center for Optoelectronics Materials and Devices Center for Nanoscience and Nanotechnology ' Key Laboratory of Advanced TextileMaterials and Manufacturing Technology Ministry' of Education' Engineering Research Center for Eco-Dying & Finishing q[' Textiles' Zhejian g Sci- Tech UniversiO' Han gzhou 310018 China State Key Laboratory of Inorganic Synthesis and Preparative Chemisto' College of Chemistry Jilin University Changchun 130012 China

This paper reviews the recent research progress in the hetero-nanostructure of silver nanoparticles on mox (M=Mo, Ti and Si). It describes the general synthesis of hetero-nanostructure of silver nanoparticles on mox, and then outlines the interesting catalytic and sensing properties found in these hetero-nanostructures of silver nanoparticles on mox.

关键词：银纳米粒子应用纳米结构钼硅钛 mox 异质

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mox堆芯中子注量计算方法研究

核动力工程 2014年第S2期35卷 27-30页

作者：唐松乾谭怡应栋川魏述平中国核动力研究设计院核反应堆系统设计技术重点实验室成都610041

快中子注量是影响压力容器材料性能的重要指标。在堆芯装有钚铀氧化物混合燃料(mox燃料),堆芯物理特性发生明显变化时,现有的屏蔽计算软件能否准确预测压力容器所受的快中子注量率值得研究。本研究分别使用MCNP、TORT、SCALE等国际通用... 详细信息

快中子注量是影响压力容器材料性能的重要指标。在堆芯装有钚铀氧化物混合燃料(mox燃料),堆芯物理特性发生明显变化时,现有的屏蔽计算软件能否准确预测压力容器所受的快中子注量率值得研究。本研究分别使用MCNP、TORT、SCALE等国际通用的屏蔽计算程序对VENUS-2基准题进行分析比较。研究表明,各软件对含mox燃料堆芯的中子注量率计算偏差均在合理的范围内,能满足工程设计的需求,MCNP程序的计算精度相对更高。

关键词： mox 快中子注量 VENUS-2

PuO_2含量对mox燃料组件物理特性的影响

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材料导报 2016年第18期30卷 138-142页

作者：王锋陈车重庆大学动力工程学院重庆400030 重庆大学低品位能源利用技术及系统教育部重点实验室重庆400030

当超临界水冷堆组件采用铀与钚的氧化物混合而成的mox燃料时,与普通UO_2燃料相比其中子学特性存在差异。为了研究PuO_2含量对组件物理特性的影响,采用蒙特卡罗方法计算得到了不同PuO_2含量时mox燃料物理特性参数,包括俘获裂变比、总微... 详细信息

当超临界水冷堆组件采用铀与钚的氧化物混合而成的mox燃料时,与普通UO_2燃料相比其中子学特性存在差异。为了研究PuO_2含量对组件物理特性的影响,采用蒙特卡罗方法计算得到了不同PuO_2含量时mox燃料物理特性参数,包括俘获裂变比、总微观裂变截面、燃料每次裂变平均释放的能量、每次裂变释放的中子数及有效裂变中子数。进一步得到了装载不同含量PuO_2时mox燃料组件特性参数,包括能谱、Keff、相对功率、相对功率峰值和缓发中子份额。研究结果对mox燃料组件的设计有一定参考价值。

关键词： mox 超临界水冷反应堆 PuO2 蒙特卡罗方法物理特性

含mox燃料堆芯衰变热及裂变产物积存量的特性研究

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核动力工程 2014年第2期35卷 8-12页

作者：谭怡魏述平邓理邻刘晓黎中国核动力研究设计院核反应堆系统设计技术国家级重点实验室成都610041

我国尚无mox燃料的工程经验,需开展大量的论证工作。以国内M310型堆芯为对象,对使用30%mox燃料的堆芯燃料管理方案进行分析,比较含mox燃料堆芯和全UO2堆芯的衰变热、乏燃料水池热负荷和堆芯裂变产物积存量的特性差异。结果表明,堆芯衰... 详细信息

我国尚无mox燃料的工程经验,需开展大量的论证工作。以国内M310型堆芯为对象,对使用30%mox燃料的堆芯燃料管理方案进行分析,比较含mox燃料堆芯和全UO2堆芯的衰变热、乏燃料水池热负荷和堆芯裂变产物积存量的特性差异。结果表明,堆芯衰变热、乏燃料水池热负荷变化较小,都不会超过原来的15%,堆芯裂变产物积存量中少量核素偏差较大,135Xe、136Cs等超过40%,其余核素变化较小。研究表明,含mox燃料堆芯的辐射特性存在一定差异,但变化非常有限,不会对电厂的运行和安全产生影响。

关键词： mox 衰变热裂变产物积存量乏燃料水池热负荷

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P1各向异性散射特征线方法研究及应用

原子能科学技术 2017年第4期51卷 684-688页

作者：汤春桃上海核工程研究设计院上海200233

基于各向同性散射的中子输运方程特征线方法,计算实际组件能谱时经输运修正后,散射矩阵中P0自散射截面可能出现一定量的负值,影响数值稳定性。本文开发了P1各向异性散射特征线方法,并研制了计算程序PEACH-A。压水堆栅元基准问题的验证... 详细信息

基于各向同性散射的中子输运方程特征线方法,计算实际组件能谱时经输运修正后,散射矩阵中P0自散射截面可能出现一定量的负值,影响数值稳定性。本文开发了P1各向异性散射特征线方法,并研制了计算程序PEACH-A。压水堆栅元基准问题的验证结果表明,PEACH-A程序具有较高的计算精度。对典型富集度的UO_2、mox燃料栅元及其组合问题进行了敏感性分析,结果表明,针对mox燃料及富集度差异较大的UO_2燃料栅元组合问题有必要采用P1各向异性散射。

关键词：特征线方法 P1各向异性散射 mox PEACH-A程序

An Integrated Process for Recycling of ThO<sub>2</sub>Based Mixed Oxide Rejected Nuclear Fuel Pellets

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World Journal of Nuclear Science and Technology 2017年第4期7卷 309-330页

作者： Gitender Singh Prashal M. Khot Pradeep Kumar Chetan Baghra Raj Bhushan Bhatt Praveen G. Behere Advanced Fuel Fabrication Facility (AFFF) Bhabha Atomic Research Centre Tarapur India Radio-Metallurgy Division Bhabha Atomic Research Centre Mumbai India Homi Bhabha National Institute (HBNI) and Integrated Fuel Fabrication Facility (IFFF) Bhabha Atomic Research Centre Mumbai India

This paper presents a study on the process engineering aspects of relevance to the industrial implementation of ThO2 and (Th, U)O2 mixed oxide (mox) pellet type fuel manufacturing. The paper in particular focuses on the recycling of thoria based fuel production scrap which is an economically important component in the fuel manufacturing process. The thoria based fuels are envisaged for Advanced Heavy Water Reactor (AHWR) and other reactors important to the Indian Nuclear Power Programme. A process was developed for recycling the chemically clean, off-specification and defective sintered ThO2 and (Th, U)O2 mox nuclear fuel pellets. ThO2 doesn’t undergo oxidation or reduction and thus, more traditional methods of recycling are impractical. The integrated process was developed by combining three basic approaches of recycling namely mechanical micronisation, air oxidation (for mox) and microwave dissolution-denitration. A thorough investigation of the influence of several variables as heating method, UO2 content, fluoride and polyvinyl alcohol (PVA) addition during microwave dissolution-denitration was recorded on the product characteristics. The suitability evaluation of the recycled powder for re-fabrication of the fuel was carried out by analyzing the particle size, BET specific surface area, phase using XRD, bulk density and impurities. The physical and chemical properties of recycled powder obtained from the sintered (Th1-y, Uy)O2 (y;0 - 30 wt%) pellets advocate 100% utilisation for fuel re-fabrication. Recycled ThO2 by integrated process showed distinctly high sinterability compared to standard powder evaluated in terms of surface area and particle size.

关键词： ThO2 mox (Th U)O2 AHWR Recycling Microwave Denitration

Burn-Up Measurements on Dissolver Solution of Mixed Oxide Fuel Using HPLC-Mass Spectrometric Method

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International Journal of Analytical Mass Spectrometry and Chromatography 2013年第1期1卷 55-60页

作者： S. Bera R. Balasubramanian Arpita Datta R. Sajimol S. Nalini T. S. Lakshmi Narasimhan M. P. Antony N. Sivaraman K. Nagarajan P. R. Vasudeva Rao Chemistry Group Indira Gandhi Centre for Atomic Research Kalpakkam India

Burn-up measurement on an irradiated mixed oxide (mox) test fuel pellet was carried out through measurements on the dissolver solution by HPLC-Thermal Ionization Mass Spectrometric (TIMS) technique. The studies carried out using HPLC as well as TIMS for quantification of burn-up value are described. While in one case, both the separation and determination of elements of interest (U, Pu and Nd) were carried out by HPLC;in another case, TIMS technique was used to quantify them from the HPLC separated fractions.The rapid separation procedures developed in our laboratory earlier were employed to isolate pure fractions of the desired elements. The individual lanthanide fission products (La to Eu) were separated from each other using dynamic ion-exchange chromatographic technique whereas uranium and plutonium were separated from each other using reversed phase chromatographic technique. The pure fractions of U, Pu and Nd obtained after HPLC separation procedure for “spiked” and “unspiked” dissolver solutions were used in TIMS measurements for the first time in our laboratory. In TIMS analysis, isotopic abundances of uranium, plutonium and neodymium fractions obtained from HPLC separation procedure on an “unspiked” fuel sample were measured. For the determination of U, Pu and Nd by isotopic dilution mass spectrometric technique (IDMS), known quantities of tracers enriched in 238U, 240Pu and 142Nd were added to the pre-weighed dissolver solution and subjected to HPLC separation procedures. The isotope ratios viz. 142Nd/(145Nd +146Nd), 238U/233U and 240Pu/239Pu in the pertinent “spiked” fractions were subsequently measured by TIMS. The spikes were pre-standardized in our laboratory employing reverse isotopic dilution technique against the standard solutions available in our laboratory (for 238U, 239Pu and 142Nd, standard solutions of 233U, 239Pu (of higher abundance than in the sample) and 150Nd were employed as spikes). The burn-up values from duplicate spiking experiments were computed based on the summation of 145Nd +

关键词： mox Dissolver Solution HPLC TIMS Uranium Plutonium Neodymium

ANITA mox自养脱氮MBBR反应器的启动及运行

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中国给水排水 2014年第5期30卷 1-5页

作者：李慧博王银爽丁娟陈晓华 R.Lemaire Julien.Chauzy 威立雅水务工程<北京>有限公司北京100004 威立雅技术部

介绍了一种新型一级全程自养脱氮工艺——ANITA mox MBBR工艺在污水处理厂的启动和运行经验。通过接种来自“苗圃”的负载厌氧氨氧化菌的生物膜填料，来缩短新运行的A-NITA mox工艺的启动时间。2010年第一座ANITAmox反应器在瑞典Malmi）... 详细信息

介绍了一种新型一级全程自养脱氮工艺——ANITA mox MBBR工艺在污水处理厂的启动和运行经验。通过接种来自“苗圃”的负载厌氧氨氧化菌的生物膜填料，来缩短新运行的A-NITA mox工艺的启动时间。2010年第一座ANITAmox反应器在瑞典Malmi）的Sjolunda污水处理厂建成，在接种3％填料的情况下，启动开始4个月后对NH4＋-N的去除率即可达90％，去除负荷为1．2kg／（m2·d），去除单位质量氨氮的能耗为1．5kW·h，N2O排放量只有0．2％～0．9％。可见，ANITA mox工艺是一种高效、碳排放量低、节能且运行稳定可靠的工艺。

关键词：厌氧氨氧化 ANITA mox MBBR 启动脱氮 N2O排放量