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Hybrid electrodynamics and kinetics simulation for electromagnetic wave propagation in weakly ionized hydrogen plasmas

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Physical Review E 2012年第4期86卷 046704-046704页

作者： Qiang Chen Bin Chen []National Key Laboratory of Electromagnetic Environment and Electro-optical Engineering PLA University of Science and Technology Nanjing 210007 People's Republic of China

In this paper, a hybrid electrodynamics and kinetics numerical model based on the finite-difference time-domain method and lattice Boltzmann method is presented for electromagnetic wave propagation in weakly ionized hydrogen plasmas. In this framework, the multicomponent Bhatnagar-Gross-Krook collision model considering both elastic and Coulomb collisions and the multicomponent force model based on the Guo model are introduced, which supply a hyperfine description on the interaction between electromagnetic wave and weakly ionized plasma. Cubic spline interpolation and mean filtering technique are separately introduced to solve the multiscalar problem and enhance the physical quantities, which are polluted by numerical noise. Several simulations have been implemented to validate our model. The numerical results are consistent with a simplified analytical model, which demonstrates that this model can obtain satisfying numerical solutions successfully.

关键词： HYBRID systems ELECTRODYNAMICS ANALYTICAL mechanics ELECTROMAGNETIC waves THEORY of wave motion FINITE differences TIME-domain analysis LATTICE Boltzmann methods HYDROGEN plasmas

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Computer simulation of explosively formed projectile with canted tail and its exterior ballistics

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Binggong Xuebao/Acta Armamentarii 2012年第SUPPL.1期33卷 134-140页

作者： Shi, Dang-Yong Zhang, Qing-Ming Xia, Chang-Fu Zhai, Zhe Gong, Zi-Zheng State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing 100081 China Command Institute of Engineer Corps Xuzhou 221004 Jiangsu China National Key Laboratory of Science and Technology on Reliability and Environment Engineering Beijing Institute of Spacecraft Environment Engineering Beijing 100094 China

A new foil method to produce an explosively formed projectile (EFP) with canted tail was presented and verified through numerical simulation. EFP with canted tail could be generated by bonding the rotation-symmetrically arranged foils on the surface of liner. The formation process of EFP was calculated using a fluid structure interaction (FSI) model in LS-DYNA, and a characterization technique of canted tail was established. The numerical results of six degrees of freedom ballistic trajectory show that the canted tail can produce a roll moment, and its spin can attenuate the amplitude of attack angle and the impact errors.

关键词： Fluid structure interaction

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Inside Cover: Two-Way Nanopore Sensing of Sequence-Specific Oligonucleotides and Small-Molecule Targets in Complex Matrices Using Integrated DNA Supersandwich Structures (Angew. Chem. Int. Ed. 7/2013)

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Angewandte Chemie International Edition 2013年第7期52卷

作者： Nannan Liu Yanan Jiang Yahong Zhou Prof. Fan Xia Dr. Wei Guo Prof. Lei Jiang School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 (P.R. China) School of Chemistry and Environment Beijing University of Aeronautics and Astronautics Beijing 100191 (P.R. China) Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P.R. China) Fan Xia School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 (P.R. China) Wei Guo Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P.R. China)

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Erratum to “C 60 -DOM interactions and effects on C 60 apparent solubility: A molecular mechanics and density functional theory study” [Environ. Int. 37 (2011): 1078–1082. DOI: 10.1016/***.2011.02.016]

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environment International 2013年 52卷 87-87页

作者： Zhuang Wang Jingwen Chen Qian Sun Willie J.G.M. Peijnenburg Key Laboratory of Industrial Ecology and Environmental Engineering (MOE) School of Environmental Science and Technology Dalian University of Technology Dalian 116024 P. R. China RIVM - Laboratory for Ecological Risk Assessment National Institute of Public Health and the Environment Bilthoven 3720 BA The Netherlands State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration College of Urban and Environmental Sciences Northeast Normal University Changchun 130024 P. R. China University Leiden Faculty of Science Institute of Environmental Sciences (CML) Leiden The Netherlands

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Quaternary primary productivity in Porcupine Seabight,NE North Atlantic

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science China Earth sciences 2012年第2期55卷 306-314页

作者： LI XiangHui Akihiro KANO CHEN YunHua Chiduru TAKASHIMA XU WenLi XU BaoLiang WANG RuiJian State Key Laboratory of Enhanced Oil Recovery Institute of Petroleum Exploration&DevelopmentChina National Petroleum CorporationBeijing 100083China Graduate School of Social and Cultural Studies Kyushu University4-2-1 RopponmatsuFukuoka 810-8560Japan School of Earth Sciences and Engineering Nanjing UniversityNanjing 210093China Geological Science Research Institute of Shengli Oilfield SINOPECDongying 257015China Environment Studies Faculty of Culture and EducationSaga University1 Honjo-machiSaga 840-8502Japan Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059China Sichuan Research Centre Bureau of Geophysical Prospecting of China National Petroleum CorporationChengdu 610051China State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China

Biogenic opal and calcium carbonate contents in the Quaternary fine-grained sediments in the deep sea coral mound area (Hole U1317E and Hole U1318B drilled by IODP Expedition 307) in Porcupine Seabight, southwest off Ireland, were measured to estimate the primary productivity (Pp) of the surface seawater in NE Atlantic. The results from the two holes commonly show relatively high Pp values of 10-30 g cm-2 ky-1, having stratigraphic cyclicity reversely correlated with the δ13C profile. The high Pp could be attributed to the oceanic setting controlled by the Eastern North Atlantic (Central) Water and Shelf Edge Current, which have been strongly influenced by the obliquity forcing of the Milankovitch cycle. A positive covariance was observed between high Pp and the mound development in U1317E, implying that the organic matter was the principal food source for the mound coral community. It is proposed that the pelagic marl matrix of the mound sediments provides information of the surface water productivity that is useful for reconstructing the paleoceanography and the paleoclimate in the NW Atlantic.

关键词： primary productivity biogenic opal calcium carbonate Quaternary IODP 307 Porcupine Seabight North Atlantic

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Innentitelbild: Two‐Way Nanopore Sensing of Sequence‐Specific Oligonucleotides and Small‐Molecule Targets in Complex Matrices Using Integrated DNA Supersandwich Structures (Angew. Chem. 7/2013)

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Angewandte Chemie 2013年第7期125卷

作者： Nannan Liu Yanan Jiang Yahong Zhou Fan Xia Wei Guo Lei Jiang School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 (P.R. China) School of Chemistry and Environment Beijing University of Aeronautics and Astronautics Beijing 100191 (P.R. China) Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P.R. China)

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Two‐Way Nanopore Sensing of Sequence‐Specific Oligonucleotides and Small‐Molecule Targets in Complex Matrices Using Integrated DNA Supersandwich Structures†

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Angewandte Chemie 2013年第7期125卷

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Families of Dothideomycetes

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Fungal Diversity 2013年第6期63卷 1-313页

作者： Kevin D.Hyde E.B.Gareth Jones Jian-Kui Liu Hiran Ariyawansa Eric Boehm Saranyaphat Boonmee Uwe Braun Putarak Chomnunti Pedro W.Crous Dong-Qin Dai Paul Diederich Asha Dissanayake Mingkhuan Doilom Francesco Doveri Singang Hongsanan Ruvishika Jayawardena James D.Lawrey Yan-Mei Li Yong-Xiang Liu Robert Lücking Jutamart Monkai Lucia Muggia Matthew P.Nelsen Ka-Lai Pang Rungtiwa Phookamsak Indunil C.Senanayake Carol A.Shearer Satinee Suetrong Kazuaki Tanaka Kasun M.Thambugala Nalin N.Wijayawardene Saowanee Wikee Hai-Xia Wu Ying Zhang Begoña Aguirre-Hudson S.Aisyah Alias AndréAptroot Ali H.Bahkali Jose L.Bezerra D.Jayarama Bhat Erio Camporesi Ekachai Chukeatirote Cécile Gueidan David L.Hawksworth Kazuyuki Hirayama Sybren De Hoog Ji-Chuan Kang Kerry Knudsen Wen-Jing Li Xing-Hong Li Zou-Yi Liu Ausana Mapook Eric H.C.McKenzie Andrew N.Miller Peter E.Mortimer Alan J.L.Phillips Huzefa A.Raja Christian Scheuer Felix Schumm Joanne E.Taylor Qing Tian Saowaluck Tibpromma Dhanushka N.Wanasinghe Yong Wang Jian-Chu Xu Supalak Yacharoen Ji-Ye Yan Min Zhang Key Laboratory for Plant Biodiversity and Biogeography of East Asia(KLPB) Kunming Institute of BotanyChinese Academy of ScienceKunming 650201Yunnan China World Agroforestry Centre East Asia NodeHeilongtanKunming 650201China Institute of Excellence in Fungal Research Chiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Institute Ocean Earth Sciences Kuala Lumpur 50603SelangorMalaysia Department of Botany and Microbiology King Saudi UniversityRiyadhSaudi Arabia 42 Longacre Drive LivingstonNJ 07039USA Institut für Biologie Bereich Geobotanik und Botanischer GartenHerbariumMartin-Luther-UniversitätNeuwerk 2106099 Halle(Saale)Germany CBS-KNAW Fungal Biodiversity Centre Uppsalalaan 83584CT UtrechtThe Netherlands Musée National d’histoire Naturelle 25 rue Munster2160 LuxembourgLuxembourg Institute of Plant and Environment Protection Beijing Academy of Agriculture and Forestry SciencesBeijing 100097People’s Republic of China Via dei Funaioli 22 57126 LivornoItaly Department of Environmental Science and Policy George Mason University4400 University DriveFairfaxVA 22030-4444USA International Fungal Research and Development Centre Key Laboratory of Resource Insect Cultivation&Utilization State Forestry AdministrationKunming 650224People’s Republic of China The Research Institute of Resource Insects Chinese Academy of ForestryKunming 650224People’s Republic of China Guizhou Key Laboratory of Agricultural Biotechnology Guizhou Academy of Agricultural SciencesGuiyangGuizhou 550006People’s Republic of China Science and Education Integrative Research(Botany)The Field Museum1400 South Lake Shore DriveChicagoIL 60605-2496USA Institute of Plant Sciences University of GrazHolteigasse 68010 GrazAustria Department of Life Science University of TriesteVia L.Giorgieri 10TriesteItaly Committee on Evolutionary Biology University of Chicago1025 E.57th StreetChicagoIL 60637USA Institute ofMarine Biology and Center of Excellence for the Oceans Taiwan

Dothideomycetes comprise a highly diverse range of fungi characterized mainly by asci with two wall layers(bitunicate asci)and often with fissitunicate *** species are saprobes,with many asexual states comprising important plant *** are also endophytes,epiphytes,fungicolous,lichenized,or lichenicolous *** occur in terrestrial,freshwater and marine habitats in almost every part of the *** accept 105 families in Dothideomycetes with the new families Anteagloniaceae,Bambusicolaceae,Biatriosporaceae,Lichenoconiaceae,Muyocopronaceae,Paranectriellaceae,Roussoellaceae,Salsugineaceae,Seynesiopeltidaceae and Thyridariaceae introduced in this *** family is provided with a description and notes,including asexual and asexual states,and if more than one genus is included,the type genus is also *** family is provided with at least one figure-plate,usually illustrating the type genus,a list of accepted genera,including asexual genera,and a key to these genera.A phylogenetic tree based on four gene combined analysis add support for 64 of the families and 22 orders,including the novel orders,Dyfrolomycetales,Lichenoconiales,Lichenotheliales,Monoblastiales,Natipusillales,Phaeotrichales and *** paper is expected to provide a working document on Dothideomycetes which can be modified as new data comes to *** is hoped that by illustrating types we provide stimulation and interest so that more work is carried out in this remarkable group of fungi.

关键词： Acrospermales Asterinales Botryosphaeriales Capnodiales Dothideales Dyfrolomycetales Hysteriales Jahnulales Lichenoconiales Lichenotheliales Microthyriales Monoblastiales Myriangiales Mytilinidiales Natipusillales Patellariales Phaeotrichales Phylogeny Pleosporales Strigulales Taxonomy Trypetheliales Tubeufiales Type species Venturiales

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Study on the life prediction of induction motors based on accelerated degradation testing method

Study on the life prediction of induction motors based on ac...

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International Conference on reliability, Maintainability and Safety

作者： Zheng, Deqiang Li, Haibo Zhang, Zhengping Wu, Jianguo Xu, Jing Key Laboratory of National Defense Technology for Reliability and Environment Engineering Technology Beijing Institute of Structure and Environment Engineering Beijing China

ISBN: (纸本)9781612846644

Induction motors are widely used in industry, and usually have a long life. To predict the life and reliability of the motors within a reasonable time, a simple and available accelerated degradation testing method is presented. To simulate the unbalanced load on the motor, the lamina with circular holes is mounted on the shaft of the motor eccentrically, and different unbalanced loads are obtained by changing the mounted places of the lamina. A motor accelerated test with three kinds of stress is applied, and the Orbit Areas are used to reveal the performance degradation index of motor. The life and reliability of the motor is finally predicted and evaluated with a balanced lamina mounted on the shaft as its normal working condition. The accelerated degradation testing approach has been proven to be practical to predict the life of the motors. © 2011 IEEE.

关键词： reliability analysis

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Storage durability life and reliability analysis of welded metal bellows

Storage durability life and reliability analysis of welded m...

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International Conference on reliability, Maintainability and Safety

作者： Wu, Jianguo Li, Haibo Zheng, Deqiang Liu, Wugang Xu, Jing Key Laboratory of National Defense Technology for Reliability and Environment Engineering Technology Beijing Institute of Structure and Environment Engineering Beijing China

ISBN: (纸本)9781612846644

On the ground of high resistance to pressure, long life and good retractility, the welded metal bellows are widely used by the space industry. Their performance reductions have a serious effect on the system reliability of space products during the storage. The strength and stiffness analysis of welded metal bellows are performed by theoretical research, numerical simulation and test verification in this paper. Moreover, it is ascertained that the main failure mode of bellows is stress looseness. Then the residual load carrying capacity is confirmed as the failure criterion of bellows. The variation of residual load carrying capacity with time is derived on the base of Larson-Miller model. Then, the assessment model of bellows storage durability is based on stress-strength model. At last, some welded metal bellows storage test data are evaluated through this method, and life evaluation on storage durability of bellows is presented. This method is great guidance significance for optimizing the design of welded metal bellows assembly and assessing storage reliability of space products. © 2011 IEEE.

关键词： Durability

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