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photoproduction of multi-meson final states–recent results from the Crystal-Barrel/TApS experiment at ELSA-

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Chinese physics C 2009年第12期33卷 1105-1112页

作者： U. thoma HISKp Universitt Bonn Nussallee 14-16 53115 Bonn Germany

Multi-meson final states such as γp →pπ0π0 and γp →pπ0η have been investigated with the Crystal-Barrel/TApS experiment at ELSA. Baryon cascades via △π and △η and also via higher mass baryon resonances are clearly observed. Based on this data and on data from other reactions a partial wave analysis has been performed from which partial decay widths of various N＊ and △＊ states into the different pπ0π0 and pπ0η decay channels have been determined, leading partly to unexpected results. In addition, polarisation observables have been investigated. The beam asymmetry X has been determined for both reactions and double polarisation data using a longitudinally polarised target and a circularly or linearly polarised photon beam has been taken. Given the angular coverage of the Crystal-Baxrel/TApS experiment this data covers almost the full angular range and phase space. This data will provide new and important information for the partial wave analyses and bring us one step closer towards a complete experiment.

关键词： baryon spectroscopy photoproduction multi-meson final states polarisation observables

Formulation of carbon black-ionomer dispersions for thin film formation in fuel cells

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particuology 2019年第3期17卷 7-21页

作者： Eva Hoffmann Su Zhang Martin thoma Cornelia Damm Wolfgang peukert Institute of particle Technology (LFG) Friedrich-Alexander-Universitat Erlangen-Niimberg (FAU) CauerstraJSe 4 D-91058 Erlangen Germany

The performance of proton exchange membrane fuel cells (pEMFC) is strongly determined by the structure and composition of the electrode *** interactions between the ionomer,carbon black particles,and solvent affect the suspension properties and thus the layer *** analyze the effect of the ionomer-to-carbon (I/C) weight ratio for two different types of carbon black on the suspension and layer *** branched carbon blacks with a high surface area tend to form less cracked *** less branched carbons can pack together more closely,a smaller pore size results in a larger capillary pressure during drying and thus more *** added ionomer adsorbs on the carbon particles and improves the colloidal stability of the carbon black *** carbon black aggregates are thus smaller,resulting in closer packing and thinner ***,the addition of the ionomer increases the critical coating thickness (CCT) of the layers because drying stresses are dissipated by the deformation of the ionomer,preventing crack *** optimum I/C weight ratio is identified for optimal layer formation and minimized crack formation.

关键词： perfluorosulfonic acid (pFSA) ionomer Carbon black Layer formation Cracking porosity

Ultrasound enhanced friction stir welding of aluminum and steel： process and properties of EN AW 6061/DC04-Joints

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Journal of Materials Science & Technology 2018年第1期34卷 163-172页

作者： Marco thoma Guntram Wagner Benjamin Straβ Bernd Wolter Sigrid Benferc Wolfram Furbeth Chair of Composites and Material Compounds Chemnitz University of Technology Chemnitz 09125 Germany Fraunhofer Institute for Nondestructive Testing IZFp Saarbrucken 66123 Germany DECHEMA-Forschungsinstitut Frankfurt am Main 60486 Germany

In this work, the joining of aluminum to steel was conducted by ultrasound enhanced friction stir weld- ing （USE-FSW）. The power ultrasound was introduced into one of the metal sheets by an ultrasonic roll seam module synchronously to the FSW-process. The effect of the ultrasound on the resulting welds, their microstructure and their corrosion properties was investigated by light and scanning electron microscopy and corrosion investigations. The USE-FSW-joints showed less and smaller steel particles in the nugget zone as well as a thinner continuous intermetallic phase of FeAl3 at the interface. The nondestructive testing method of computed laminography proved the observations made by optic microscopy due to non-porous joints for both techniques. Corrosion investigations showed only low corrosion current densities and no enhanced galvanic corrosion for the EN AW-6061/DC04-hybrid joints in sodium chloride solution.

关键词： Friction stir welding Ultrasound enhancement Dissimilar joints Corrosion

有无利福平两种联合化疗方案在南印度治疗多菌型麻风临床对照试治5年报告

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皮肤病与性病 1991年第1期13卷 54-55页

作者： thoma.,A 周道海上海市遵义医院

利福平(RFp)是强烈的杀菌剂,与其它药物配伍的方案治疗麻风少有长期随访的研究。作者在印度马德拉斯结核病研究中心对LL、BL麻风病人用及不用RFp的MDT方案进行对比试治,并随访60个月。选择大于12岁的LLp、LLs及BL病人,BI≥2.5,(Ridley)... 详细信息

利福平(RFp)是强烈的杀菌剂,与其它药物配伍的方案治疗麻风少有长期随访的研究。作者在印度马德拉斯结核病研究中心对LL、BL麻风病人用及不用RFp的MDT方案进行对比试治,并随访60个月。选择大于12岁的LLp、LLs及BL病人,BI≥2.5,(Ridley)随机分成有或无REp两组。一、含RFp组(RHCD):包括①RFp12mg/kg/日,②DDS10mg/kg/每周,(20～29kg=RFp300mg,DDS50mg;30～44kg=RFp450mg,DDS75mg;≥45kg=RFp600mgg DDS100mg)

关键词：麻风病多菌型利福平化疗

美国邮政总署（USpS）邮政票据和标签类产品中所使用的一种环保型压敏胶粘剂的研制开发成果及经验

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美国邮政总署（USPS）邮政票据和标签类产品中所使用的一种环保型...

2001中国造纸学会学术报告会

作者： Joe peng Lynne A.thoma AbuBakr 梁伟 program Manager United States postal Service Washington DC USA Director Specialized Technology Resource Inc.Enfield ConnecticutUSA Research project Leader USDA Forest Service Forest products Laboratory Madison WisconsinUSA

美国邮政总署（USpS）发起一个开发邮政用品的环保型压敏胶粘剂（pSA）的研究计划, 开发不影响环境的产品是它的部分承诺。这项计划导致工业和政府联合开发一种可回收pSA。这篇文章总结了pSA计划发起、展开、评价和完成过程中所取得的...

美国邮政总署（USpS）发起一个开发邮政用品的环保型压敏胶粘剂（pSA）的研究计划, 开发不影响环境的产品是它的部分承诺。这项计划导致工业和政府联合开发一种可回收pSA。这篇文章总结了pSA计划发起、展开、评价和完成过程中所取得的一些经验。此项目始于回收同题的提出和美国总统的指令,终于问题的解决和一种有益产品的出现,参与各方各尽其责进展顺利。讨论了纸张回收过程中pSA的影响和新pSA产品的性能。另外还简单讨论了关于美国总统于 2000年4月21日下发的行政命令,该命令包括政府机构购买和使用新型环保型pSA产品的执行策略。

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齿轮泵在橡胶挤出工艺中的应用

橡胶工业 2003年第8期50卷 491-492页

作者： Olaf Skibba Oliver thoma 田军涛 AZ模具和机器制造公司

齿轮泵技术在橡胶工业中的应用正取得突飞猛进的发展.橡胶挤出中使用齿轮泵有很多优点,如可提高产品质量和减少胶料焦烧等.事实上,如果多花一点时间改进和优化技术,同时应用更多必要的范例来了解齿轮泵的用途,将很难想象在下一代挤出生... 详细信息

齿轮泵技术在橡胶工业中的应用正取得突飞猛进的发展.橡胶挤出中使用齿轮泵有很多优点,如可提高产品质量和减少胶料焦烧等.事实上,如果多花一点时间改进和优化技术,同时应用更多必要的范例来了解齿轮泵的用途,将很难想象在下一代挤出生产线中可以不用齿轮泵.这主要是由于单螺杆挤出机有限的生产能力造成的.

关键词：齿轮泵橡胶挤出工艺应用单螺杆挤出机边界条件

Assessment of Uinta Basin Oil and Natural Gas Well pad pneumatic Controller Emissions

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Journal of Environmental protection 2017年第4期8卷 394-415页

作者： Eben D. thoma parikshit Deshmukh Russell Logan Michael Stovern Chris Dresser Halley L. Brantley Office of Research and Development National Risk Management Research Laboratory U.S. EPA Durham NC USA Jacobs Technology Inc. Durham NC USA Region 8 U.S. EPA Denver CO USA ORISE participant U.S. EPA Office of Research and Development National Risk Management Research Laboratory Durham NC USA

In the fall of 2016, a field study was conducted in the Uinta Basin Utah to improve information on oil and natural gas well pad pneumatic controllers (pCs) and emission measurement methods. A total of 80 pC systems at five oil sites (supporting six wells) and three gas sites (supporting 12 wells) were surveyed, and emissions data were produced using a combination of measurements and engineering emission estimates. Ninety-six percent of the pCs surveyed were low actuation frequency intermittent vent type. The overall whole gas emission rate for the study was estimated at 0.36 scf/h with the majority of emissions occurring from three continuous vent pCs (1.1 scf/h average) and eleven (14%) malfunctioning intermittent vent pC systems (1.6 scf/h average). Oil sites employed, on average 10.3 pC systems per well compared to 1.5 for gas sites. Oil and gas sites had group average pC emission rates of 0.28 scf/h and 0.67 scf/h, respectively. This difference was due in part to differing site selection procedures used for oil and gas sites. The pC system types encountered, the engineering emissions estimate approach, and comparisons to measurements are described. Survey methods included identification of malfunctioning pC systems and emission measurements with augmented high volume sampling and installed mass flow meters, each providing a somewhat different representation of emissions that are elucidated through example cases.

关键词： pneumatic Controller Emissions Oil and Natural Gas production Uinta Basin Methane Volatile Organic Compounds

基于亚波长空间分辨平面太赫兹谐振器的二维频率分辨成像

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长春理工大学学报（自然科学版） 2012年第3期35卷 141-144,153页

作者： Arne thoma thomas Dekorsy 德国康斯坦茨大学物理系及应用光子学中心

利用基于扫描遂道显微成像技术的无孔(散射)近场太赫兹时域显微镜,对由非对称开口谐振环(SRR)构成的频率选择表面(FSS)的单元进行了研究。利用高速非同步光学采样法,在宽频率范围(0.3…1THz)内获得了l/60-l/200的高频独立分辨率的图像... 详细信息

利用基于扫描遂道显微成像技术的无孔(散射)近场太赫兹时域显微镜,对由非对称开口谐振环(SRR)构成的频率选择表面(FSS)的单元进行了研究。利用高速非同步光学采样法,在宽频率范围(0.3…1THz)内获得了l/60-l/200的高频独立分辨率的图像显示。该图像给出了谐振环的弧状结构,另外,还显示了谐振环的弧末端周围的信号增强。结果显示,从两个不同弧发出的相对近场信号强度的特性与SRRs本征共振频率是相关联的。

关键词：近场呈像太赫兹开口谐振环时域光谱

Vectron——用于欧洲铁路的新一代机车

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国外内燃机车 2013年第3期 9-22页

作者： Christian thoma Walter Hammer 金程

西门子移动公司为欧洲市场研发了新一代的Vectron机车产品。该产品的开发吸取了"欧洲短跑手"(Eurosprinter)机车和"欧洲飞人"(Eurorunner)机车的运行经验,是第一次与订货无关而开发和制造的产品。新型机车采用了经过考验的技术措施和创... 详细信息

西门子移动公司为欧洲市场研发了新一代的Vectron机车产品。该产品的开发吸取了"欧洲短跑手"(Eurosprinter)机车和"欧洲飞人"(Eurorunner)机车的运行经验,是第一次与订货无关而开发和制造的产品。新型机车采用了经过考验的技术措施和创新的设计方案。Vectron机车产品覆盖了各种不同的机车功率等级,既有多流制电力机车和双流制电力机车,也有单流制电力机车;既有货运机车,也有客运机车。该系列产品还补充了电传动内燃机车方案。Vectron系列的第1台内燃机车自2012年1月1日起已经达到了排放标准。机车采用一贯的模块化结构,由基础包和加装包组成,具有较高的经济性、可使用性、可靠性和较高的牵引性能。该系列机车既适用于德国境内运输,也适用于国际互换性运输。对于未来业务具有不确定性的欧洲铁路经营商而言,该机车产品是最佳的铁路牵引装备。

关键词： Vectron平台内燃机车电力机车牵引性能总体布置结构设计技术参数西门子