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The Influence of Medium on Low-Voltage Circuit Breaker Arcs

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Plasma Science and Technology 2006年第6期8卷 680-684页

作者：杨茜荣命哲 Anthony B.MURPHY 吴翊 State Key Lab of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'an 710049China csiro industrial physics Lindfield NSW 2070Australia State Key Lab of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'an 710049China.

This paper mainly focuses on the influence of three kinds of media： air, air-10%PA （Nylon） and air-10% POM （polyoxymethylene） on low-voltage circuit breaker arcs. A threedimensional （3-D） model of arc motioa under the effect of external magnetic field is built based on magnetohydrodynamics （MHD） equations. By adopting the commercial computational fluid dynamics （CFD） package based on the control-volume method, the above MHD equations are solved. For the media of air-10%PA and air-10%POM, the distributions of stationary temperature and electrical potential and the transient motion processes are compared with those of air arc. The research shows that both air-10%PA and air -10% POM can cool the arc plasma and the former is more effective. Both of them can increase the stationary voltage as well. Moreover, the presence of the two mixtures can accelerate the arc motion toward the quenching area and ensures the arc quenched in time.

关键词： arc plasma arc motion thermodynamic and transport properties

DEM prediction of industrial and geophysical particle flows

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Particuology 2010年第2期8卷 106-118页

作者： Paul W. Cleary csiro Mathematical and Information Sciences Private Bag 33 Clayton South 3169 Australia

Simulation of industrial particle flows using DEM （Discrete Element Method） offers the opportunity for better understanding of the flow dynamics by the inclusion of particle scale physics that often determine the nature of these flows. Increased understanding from the models can lead to improvements in equip- ment design and operation, potentially leading to large increases in equipment and process efficiency, throughput and]or product quality. industrial applications are typically large and involve complex par- ticulate behaviour in complex geometries. This paper explores the critical influence of particle shape on granular system behaviour and then discusses examples of DEM applied to several large industrial problems. 2009 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. All rights reserved.

关键词： DEMGranular flowLandslideMillScreenMixing

System bias correction of short-term hub-height wind forecasts using the Kalman filter

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Protection and Control of Modern Power Systems 2021年第1期6卷 473-481页

作者： Jingjing Xu Ziniu Xiao Zhaohui Lin Ming Li International Center for Climate and Environment Science(ICCES) Institute of Atmospheric PhysicsChinese Academy of ScienceBeijingChina State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Data61 Commonwealth Scientific and Industrial Research Organization(CSIRO)PerthAustralia

Wind energy is a fluctuating source for power systems, which poses challenges to grid planning for the wind power industry. To improve the short-term wind forecasts at turbine height, the bias correction approach Kalman filter (KF) is applied to 72-h wind speed forecasts from the WRF model in Zhangbei wind farm for a period over two years. The KF approach shows a remarkable ability in improving the raw forecasts by decreasing the root-mean-square error by 16% from 3.58 to 3.01 m s−1, the mean absolute error by 14% from 2.71 to 2.34 m s−1, the bias from 0.22 to − 0.19 m s−1, and improving the correlation from 0.58 to 0.66. The KF significantly reduces random errors of the model, showing the capability to deal with the forecast errors associated with physical processes which cannot be accurately handled by the numerical model. In addition, the improvement of the bias correction is larger for wind speeds sensitive to wind power generation. So the KF approach is suitable for short-term wind power prediction.

关键词： Wind forecasts Wind energy Numerical model Bias correction Kalman filter Atmospheric boundary layer

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“推-拉”型巯基偶氮苯衍生物的合成

化学研究与应用 2008年第7期20卷 908-912页

作者：罗世霞朱淮武张笑一张思亭卫钢贵州师范大学理学院贵州贵阳550001 csiro Industrial Physics Lindfield NSW 2070 Australia

Nine mercapto-azobenzene dervatives with "push-pull" structure are *** synthesis procedure is simple and easily *** structures of the compounds are characterized and confirmed by elementary analysis,1H-NMR,IR and *** ... 详细信息

关键词：推-拉巯基偶氮苯

Recent progress in MgB_(2)superconducting joint technology

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镁合金学报(英文) 2023年第7期11卷 2217-2229页

作者： Hao Liang Dipak Patel Mahboobeh Shahbazi Andrzej Morawski Daniel Gajda Matt Rindfleisch Richard Taylor Yusuke Yamauchi Md Shahriar A.Hossain School of Mechanical and Mining Engineering The University of QueenslandSt LuciaQueensland 4072Australia QUT Centre for Materials Science and School of Chemistry and physics Queensland University of TechnologyBrisbaneQueensland 4001Australia Institute of High Pressure physics Polish Academy of Sciences(PAS)Sokolowska 29/37Warsaw 01-142Poland Institute of Low Temperature and Structure Research Polish Academy of Sciences(PAS)Okólna 2Wrocław 50-422Poland Hyper Tech Research Inc.539 Industrial Mile RdColumbusOhio 43228USA Applied Superconductivity Laboratory Queensland University of TechnologyBrisbaneQueensland 4001Australia australian Institute for Bioengineering and Nanotechnology(AIBN) The University of QueenslandSt LuciaQueensland 4072Australia Department of Materials Process Engineering Graduate School of EngineeringNagoya UniversityFuro-choChikusa-kuNagoya 464-8603Japan The Commonwealth Scientific and industrial Research Organisation(csiro) LindfieldNew South Wales 2070Australia

Magnesium diboride(MgB_(2))magnets have the potential to be the next-generation liquid-helium-free magnet for magnetic resonance imaging(MRI)application due to their relatively high superconducting transition temperature,high current density and low raw material cost compared with current commercial niobium-titanium(Nb-Ti)magnets.A typical superconducting magnet includes several *** produce an ultra-stable magnetic field for imaging in MRI,a superconducting electromagnet operating in a persistent mode is *** coils of the electromagnet in MRI are short-circuited to operate in the persistent mode by connecting coils with superconducting ***-sistent joints have been demonstrated for in-situ and ex-situ wires of both mono-and multi-filamentary structures,made predominantly by PIT techniques similar to those used in wire *** realise further engagement of MgB_(2)in MRI applications,enhancing the performance of MgB_(2)superconducting joints is *** literature review summarises research and development on MgB_(2)superconducting joining technology.

关键词： MgB_(2) Superconducting joints Persistent-mode magnets MRI application Field-decay measurement

Versatile inorganic-organic hybrid WOx-ethylenediamine nanowires： Synthesis, mechanism and application in heavy metal ion adsorption and catalysis

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Nano Research 2014年第6期7卷 903-916页

作者： Wei Li Fang Xia Jin Qu Ping Li Dehong Chen Zhe Chen Yu Yu Yu Lu Rachel A. Caruso Weiguo song Beijing National LaboratoryforMolecularSciences (BNLMS) Institute ofChemistry ChineseAcademyofSciences Beijing 100190 China csiro Materials Science and Engineering Private Bag 33 Clayton South Victoria 3169 Australia PFPC School of Chemistry The University of Melbourne Melbourne Victoria 3010 Australia

Inorganic-organic hybrid WOx-ethylenediamine （WO/-EDA） nanowires have been produced by a simple, low-cost and high-yield solvothermal method. These WO/-EDA hybrid nanowires have unique lamellar mesostructures with an alternate stacking of an interconnected [WO6] octahedral layer and a monolayer of ethylenediamine molecules. This hybrid structure integrated the functionality of ethylenediamine with the stability of the WOx frameworks. In situ synchrotron- radiation X-ray diffraction is used to elucidate a possible formation mechanism of the hybrid WOx-EDA. The nanowire morphology, lamellar structure and abundant functional amino groups endow them with versatile abilities. For example, in heavy metal ion adsorption the WOx-EDA nanowires display exceptional adsorption capabilities of 925 mg·g^-1 for Pb^2＋ and 610 mg·g^-1 for UO2^2＋. The nanowires also show outstanding stability and activity as a heterogeneous base catalyst in the Knoevenagel condensation reaction at room temperature. The catalyst can be recycled and reused for 20 cycles with nearly 100% yields. This study provides a new strategy to design inorganic-organic hybrid materials, and offers a multifunctional material that is a highly efficient adsorbent and sustainable catalyst.

关键词： WOx-ethylenediamine nanowires synchrotron-radiation X-ray diffraction heavy metal water treatment catalysis

Translational plasma stomatology:applications of cold atmospheric plasmas in dentistry and their extension

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High Voltage 2017年第3期2卷 188-199页

作者： He-Ping Li Xiao-Fei Zhang Xiao-Ming Zhu Miao Zheng Shu-Fang Liu Xuan Qi Kai-Peng Wang Jian Chen Xiao-Qing Xi Jian-Guo Tan Kostya(Ken)Ostrikov Department of Engineering physics Tsinghua UniversityBeijing 100084People's Republic of China Department of Prosthodontics Peking University School and Hospital of StomatologyBeijing 100081People's Republic of China Department of Stomatology Peking University Third HospitalBeijing 100191People's Republic of China Department of Pediatrics First Hospital of Tsinghua UniversityBeijing 100016People's Republic of China College of Mechanical Engineering North China University of Science and TechnologyTangshanHebei 063009People's Republic of China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084People's Republic of China School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQueensland 4000Australia csiro-QUT Joint Sustainable Materials and Processes Laboratory Commonwealth Scientific and Industrial Research OrganisationPO Box 218LindfieldNSW 2070Australia

In recent years,translational plasma medicine(TPM),as a novel application area of plasmas,has attracted much attention of experts from both academic and clinical ***-of-the-art of the lab-scale research and clinical trials of the cold atmospheric plasmas(CAPs)in the stomatology are reviewed in detail from the direct and indirect applications of the *** on the discussions concerning the relationship between the plasma stomatology and the plasma medicine,it is indicated that it would be an important reference for promoting the TPM starting from the fundamental and application studies in the field of dentistry,which is also one of the most three promising application fields of plasma medicine.

关键词： plasmas starting discussions

Plasma-enabled sensing of urea and related amides on polyaniline

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Frontiers of Chemical Science and Engineering 2016年第2期10卷 265-272页

作者： Harinarayanan Puliyalil Petr Slobodian Michal Sedlacik Ruhan Benlikaya Pavel Riha Kostya (Ken) Ostrikov Uros Cvelbar Jozef Stefan Institute (F4) Jamova cesta 39 1000 Ljubjana Slovenia Jozef Stefan International Postgraduate School Jamova cesta 39 1000 Ljubjana Slovenia Centre of Polymer Systems University Institute Tomas Bata University Trida T. Bati 5678 76001 Zlin Czech Republic Department of Secondary Science and Mathematics Education Faculty of Necatibey Education Balikesir University 10100 Balikesir Turkey Institute of Hydrodynamics Academy of Sciences Pod Patankou 5 166 12 Prague 6 Czech Republic Institute for Future Environments and Institute for Health and Biomedical Innovation School of ChemistryPhysics and Mechanical Engineering Queensland University of Technology Brisbane Queensland 4000 Australia csiro-QUT Joint Sustainable Materials and Devices Laboratory Commonwealth Scientific and Industrial Research Organization New South Wales 2070 Australia School of physics The University of Sydney Sydney New South Wales 2006 Australia

The atmospheric pressure plasma jet （APPJ） was used to enhance the sensitivity of industrially important polyaniline （PANI） for detection of organic vapors from amides. The gas sensing mechanism of PANI is operating on the basis of reversible protonation or deprotonation, whereas the driving force to improve the sensitivity after plasma modifications is unknown. Herein we manage to solve this problem and investigate the sensing mechanism of atmospheric plasma treated PANI for vapor detection of amides using urea as a model. The results from various analytical techniques indicate that the plausible mechanism responsible for the improved sensi- tivity after plasma treatment is operating through a cyclic transition state formed between the functional groups introduced by plasma treatment and urea. This transition state improved the sensitivity of PANI towards 15 ppm of urea by a factor of 2.4 times PANI. This plasma treated compared to the non-treated PANI is promising for the improvement of the sensitivity and selectivity towards other toxic and carcinogenic amide analytes for gas sensing applications such as improving material proces- sing and controlling food quality.

关键词： gas sensing urea PANI amides plasma

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导电分子巯基紫罗碱电子结构的理论计算

原子与分子物理学报 2007年第5期24卷 1118-1122页

作者：张笑一汤建庭王一波梁雪卫钢贵州师范大学理学院贵阳550001 中国科学院大连化学物理研究所大连116023 贵州大学理学院贵阳550003 csiro Industrial PhysicsPO Box 218LindfieldNSW2070Australia

用密度泛函B3LYP/6-31G**计算方法,对不同碳链长度和不同氧化态( V2 +/V+.)紫罗碱二硫醇的平衡几何构型及相应电子结构的研究表明,两种氧化态在吡啶环共面性和前线轨道电子集居上的差异与特征,导致氧化态V2 +成为紫罗碱亲合金原子形成Au... 详细信息

用密度泛函B3LYP/6-31G**计算方法,对不同碳链长度和不同氧化态( V2 +/V+.)紫罗碱二硫醇的平衡几何构型及相应电子结构的研究表明,两种氧化态在吡啶环共面性和前线轨道电子集居上的差异与特征,导致氧化态V2 +成为紫罗碱亲合金原子形成Au-S-nVn-S-Au结构的关键组分,自由基V+.则在该结构的氧化还原电子传导中发挥核心作用.S-S核间距与前线轨道能隙的计算结果表明,在紫罗碱二硫醇单分子电导的测量中,亚甲基数n达到12的分子长度是有效的.

关键词：单分子层电活性电子结构电子传输