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数学译林 2004年第2期23卷 190-192页

作者： jánMinác 陆柱家李福安

如果我们知道一个多项式的系数及其根的c(cnewton恒等式允许我们计算出此多项式的d次幂之和．这些恒等式首先由newton于1666年前后叙述，但是直到1707年才发表(见[2，p．32])．现在。

关键词： newton恒等式多项式幂和系数

Osteochondral scaffolds for early treatment of cartilage defects in osteoarthritic joints:from bench to clinic

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Biomaterials Translational 2020年第1期1卷 3-17页

作者： Maryam Tamaddon Helena Gilja Ling Wang jMiguel Oliveira Xiaodan Sun Rongwei Tan Chaozong Liu Institute of Orthopaedic&Musculoskeletal Science University College LondonRoyal National Orthopaedic HospitalLondonUK State Key Laboratory for Manufacturing System Engineering School of Mechanical EngineeringXi’an Jiaotong UniversityXi’anShaanxi ProvinceChina B’s Research Group I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsUniversity of MinhoHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineAveParkPortugal ICVS/3B’s-PT Government Associate Laboratory Braga/GuimarãesPortugal The Discoveries Centre for Regenerative and Precision Medicine Headquarters at University of MinhoAveparkPortugal School of Materials Science and Engineering Tsinghua UniversityBeijingChina Shenzhen Lando Biomaterials Co.Ltd.Merchants Guangming Science Park ShenzhenGuangdong ProvinceChina

Osteoarthritis is a degenerative joint disease,typified by the loss in the quality of cartilage and bone at the interface of a synovial joint,resulting in pain,stiffness and reduced *** current surgical treatment for advanced stages of the disease is joint replacement,where the non-surgical therapeutic options or less invasive surgical treatments are no longer *** are major surgical procedures which have a substantial impact on patients’quality of life and lifetime risk of requiring revision *** using regenerative methods such as tissue engineering methods have been established and are promising for the early treatment of cartilage degeneration in osteoarthritis *** this approach,3-dimensional scaffolds(with or without cells)are employed to provide support for tissue ***,none of the currently available tissue engineering and regenerative medicine products promotes satisfactory durable regeneration of large cartilage ***,we discuss the current regenerative treatment options for cartilage and osteochondral(cartilage and underlying subchondral bone)defects in the articulating *** further identify the main hurdles in osteochondral scaffold development for achieving satisfactory and durable regeneration of osteochondral *** evolution of the osteochondral scaffolds–from monophasic to multiphasic constructs–is overviewed and the osteochondral scaffolds that have progressed to clinical trials are examined with respect to their clinical performances and their potential impact on the clinical *** of an osteochondral scaffold which bridges the gap between small defect treatment and joint replacement is still a grand *** scaffold could be used for early treatment of cartilage and osteochondral defects at early stage of osteoarthritis and could either negate or delay the need for joint replacements.

关键词： cartilage injury osteoarthritis osteochondral scaffold regenerative medicine subchondral defect tissue engineering

A General Approach for Optimal Kinematic Design of Parallel Manipulators

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A General Approach for Optimal Kinematic Design of Parallel ...

Study on Mechanism for Chip Removal by Molecular Dynamics Simulation in Ultra-High Speed Grinding

2003年中国智能自动化会议

作者： Y.j. Lou, G.F. Liu and Z.X. Li Dept. of Electrical and Electronic Engineering Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong

This paper deals with the problem of optimal geometry design of parallel manipulators. In order to reduce the main drawbacks of parallel manipulators, relatively small workspace and more singularities,two constraints, workspace and condition number, are considered. The design problem is thus formulated as to And a parallel mechanism such that its Cartesian workspace contains a prescribed workspace with good condition numbers in it. By observing that those requirements can be locally cast into Linear Matrix Inequalities (LMIs), we formulate the design problem locally as a convex optimization problem subject to LMIs with either a linear function or a max-det function as its objective function. At each point of discretized space of design parameters, there is an LMI-based convex optimization problem. A two-level algorithm can be applied to solve for a set of optimal kinematic parameters;(1) Discretize the space of design parameters into a set of discrete nodes;(2) At each node the newton algorithm is applied to solve the LMI-based optimization problem. By comparing all the locally optimal costs,we can obtain a set of globally optimal design parameters correspondingly. Simulation results verify the effectiveness of the proposed algorithms.

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Study on Mechanism for Chip Removal by Molecular Dynamics Si...

The International Conference on Surface Finishing Technology and Surface Engineering

作者： H.H. Zhao X.j. Gao and G.Q. Cai School of Mechanical Engineering Liaoning University of Petroleum & Chemical Technology China School of Mechanical Engineering & Automation Northeastern University China

＜正＞In this paper the physics models and mathematics models of molecular dynamics simulation in ultra high speed grinding are built up. The models are consisted of the boundary atom, newton’s atom and the constant temperature atom. The interaction between the grinding grain particles and workpiece particles is computed by the Tersoff empirical potential function. The equation of motion is built up. It is solved by numerical value and the speed and displacement of these particles are obtained. Finally the motion track of them in the different depth of cutting is simulated. According to the variety regulation of surface and the variety circumstance of the removal particles, the reasonable explanation about the mechanism for chip removal of ultra high speed grinding is given.

关键词： Ultra high speed grinding Molecular dynamics Mechanism for chip removal

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粘弹性流体流经竖直表面时的瞬时自然对流

应用数学和力学 2010年第5期31卷 526-532页

作者： H·M·杜威瑞 R·A·丹赛 A·j·千姆克哈 M·S·艾伯德尔-亚博黄雅意(译) 张禄坤(校) 约旦大学工程技术学院机械工程系安曼11942约旦基地拜勒加应用大学基地胡森学院机械工程系伊尔比德21510约旦应用教育与培训公共管理局制造工程系舒韦赫70654科威特约旦大学工程技术学院土木工程系安曼11942约旦不详

静止流体中,在一个竖直的、不可渗透的等温表面附近,研究粘弹性边界层的流动及其热传导.得到其控制方程,并利用MackCormak技术对其进行数值求解.与先前发表的关于该问题特例的结果相比较,有着很好的一致性.对于不同的粘弹性参数值,图示... 详细信息

静止流体中,在一个竖直的、不可渗透的等温表面附近,研究粘弹性边界层的流动及其热传导.得到其控制方程,并利用MackCormak技术对其进行数值求解.与先前发表的关于该问题特例的结果相比较,有着很好的一致性.对于不同的粘弹性参数值,图示了速度和温度分布、边界层厚度、Nusselt数、局部摩擦因数等典型结果.一般而言,粘弹性流体与newton流体相比较,由于拉应力的促进作用,流体动力边界层里的速度是增加的,热边界层里的温度是下降的.粘弹性参数值越高,摩擦因数和传热系数越高.

关键词：粘弹性流动瞬时自然对流传热

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Fungal diversity notes 1–110:taxonomic and phylogenetic contributions to fungal species

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Fungal Diversity 2015年第3期72卷 1-197页

作者： jian Kui Liu Kevin D.Hyde E.B.Gareth jones Hiran A.Ariyawansa Darbhe j.Bhat Saranyaphat Boonmee Sajeewa S.N.Maharachchikumbura Eric H.C.McKenzie Rungtiwa Phookamsak Chayanard Phukhamsakda Belle Damodara Shenoy Mohamed A,Abdel-Wahab Bart Buyck jie Chen K.W.Thilini Chethana Chonticha Singtripop Dong Qin Dai Yu Cheng Dai Dinushani ADaranagama Asha j.Dissanayake Mingkwan Doilom Melvina j.D’souza Xin Lei Fan Ishani DGoonasekara Kazuyuki Hirayama Sinang Hongsanan Subashini C.jayasiri Ruvishika S.jayawardena Samantha C.Karunarathna Wen jing Li Ausana Mapook Chada Norphanphoun Ka Lai Pang Rekhani H.Perera Derek Peršoh Umpava Pinruan Indunil CSenanayake Sayanh Somrithipol Satinee Suetrong Kazuaki Tanaka Kasun M.Thambugala Qing Tian Saowaluck Tibpromma Danushka Udayanga Nalin N.Wijayawardene Dhanuska Wanasinghe Komsit Wisitrassameewong Xiang Yu Zeng Faten AAbdel-Aziz Slavomir Adamčík Ali H.Bahkali Nattawut Boonyuen Timur Bulgakov Philippe Callac Putarak Chomnunti Katrin Greiner Akira Hashimoto Valerie Hofstetter ji Chuan Kang David Lewis Xing Hong Li Xing Zhong Liu Zuo Yi Liu Misato Matsumura Peter E.Mortimer Gerhard Rambold Emile Randrianjohany Genki Sato Veera Sri-Indrasutdhi Cheng Ming Tian Annemieke Verbeken Wolfgang von Brackel Yong Wang Ting Chi Wen jian Chu Xu ji Ye Yan Rui Lin Zhao Erio Camporesi Guizhou Key Laboratory of Agricultural Biotechnology Guizhou Academy of Agricultural SciencesGuiyang 550006GuizhouChina Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of ScienceKunming 650201YunnanChina Institute of Excellence in Fungal Research and School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Department of Botany and Microbiology King Saudi UniversityRiyadhSaudi Arabia Manaaki Whenua Landcare Research Private Bag 92170AucklandNew Zealand Formerly Department of Botany Goa UniversityGoaIndia No.128/1–j Azad Housing SocietyCurcaGoa VelhaIndia Muséum national d’histoire naturelle Dépt.Systématique etévolutionUMR 720575005 ParisFrance Institute of Microbiology&Beijing Key Laboratory for Forest Pest Control Beijing Forestry UniversityPO Box 61Beijing 100083China Institute of Plant and Environment Protection Beijing Academy of Agriculture and Forestry SciencesNo.9 of Shu Guang Hua Yuan Zhong LuHaidian DistrictBeijing 10097China The Key Laboratory for Silviculture and Conservation of Ministry of Education Beijing Forestry UniversityBeijing 100083China Mycology University of BayreuthUniversitätsstraße 3095440 BayreuthGermany The United Graduate School of Agricultural Sciences Iwate University18-8 Ueda 3 chomeMorioka 020-8550Japan Apple Experiment Station Aomori Prefectural Agriculture and Forestry Research Center24 FukutamiBotandairaKuroishiAomori 036-0332Japan Department of Plant Protection Agroscope Changins-Wadenswil Research Station ACWRte de Duiller1260 NyonSwitzerland Department of Botany and Microbiology College of ScienceKing Saud UniversityP.O.Box:2455Riyadh 1145Saudi Arabia Department of Botany Faculty of ScienceSohag UniversitySohagEgypt Institute of Botany Slovak Academy of SciencesDúbravskácesta 984523 BratislavaSlovakia Hirosaki University Bleakwood262 CR 3062NewtonTexas 75966USA Faculty of Agriculture and Life Sciences Hirosaki University3 Bunkyo-choHirosakiAomori

This paper is a compilation of notes on 110 fungal taxa,including one new family,10 new genera,and 76 new species,representing a wide taxonomic and geographic *** new family,Paradictyoarthriniaceae is introduced based on its distinct lineage in Dothideomycetes and its unique *** family is sister to Biatriosporaceae and *** new genera are Allophaeosphaeria(Phaeosphaeriaceae),Amphibambusa(Amphisphaeriaceae),Brunneomycosphaerella(Capnodiales genera incertae cedis),Chaetocapnodium(Capnodiaceae),Flammeascoma(Anteagloniaceae),Multiseptospora(Pleosporales genera incertae cedis),Neogaeumannomyces(Magnaporthaceae),Palmiascoma(Bambusicolaceae),Paralecia(Squamarinaceae)and Sarimanas(Melanommataceae).The newly described species are the Ascomycota Aliquandostipite manochii,Allophaeosphaeria dactylidis,***,Alternaria cesenica,Amphibambusa bambusicola,Amphisphaeria sorbi,Annulohypoxylon thailandicum,Atrotorquata spartii,Brunneomycosphaerella laburni,Byssosphaeria musae,Camarosporium aborescentis,***,***,Chaetocapnodium siamensis,Chaetothyrium agathis,Colletotrichum sedi,Conicomyces pseudotransvaalensis,Cytospora berberidis,***,Diaporthe thunbergiicola,Diatrype palmicola,Dictyosporium aquaticum,***,***,Didymella cirsii,Dinemasporium nelloi,Flammeascoma bambusae,Kalmusia italica,***,Keissleriella sparticola,Lauriomyces synnematicus,Leptosphaeria ebuli,Lophiostoma pseudodictyosporium,***,Lophiotrema eburnoides,Montagnula graminicola,Multiseptospora thailandica,Myrothecium macrosporum,Natantispora unipolaris,Neogaeumannomyces bambusicola,Neosetophoma clematidis,***,Oxydothis atypica,Palmiascoma gregariascomum,Paraconiothyrium nelloi,***,Paradictyoarthrinium tectonicola,Paralecia pratorum,Paraphaeosphaeria spartii,Pestalotiopsis digitalis,***,***,Phaeoisaria pseudoclematidis,Phragmocapnias philippinensis,Pseudocamarosporium cotinae,Pseudocercospora tam

关键词： Ascomycota Basidiomycota Global Taxonomy Initiative Phylogeny Taxonomy

EMP control and characterization on high-power laser systems

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High Power Laser Science and Engineering 2018年第2期6卷 55-62页

作者： P.Bradford N.C.Woolsey G.G.Scott G.Liao H.Liu Y.Zhang B.Zhu C.Armstrong S.Astbury C.Brenner P.Brummitt F.Consoli I.East R.Gray D.Haddock E Huggard E j.R.jones E.Montgomery I.Musgrave E Oliveira D.R.Rusby C.Spindloe B.Summers E.Zemaityte Z.Zhang Y.Li P.McKenna D.Neely Department of Physics York Plasma InstituteUniversity of YorkHeslingtonYork YO10 5DDUK Central Laser Facility STFC Rutherford Appleton LaboratoryDidcot OX110QXUK Key Laboratory for Laser Plasmas(Ministry of Education)and School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Physics SUPA University of StrathclydeGlasgow G40NGUK ENEA-C.R.Frascati-Dipartimento FSN Via E.Fermi 4500044 FrascatiItaly Space Science Department STFC Rutherford Appleton LaboratoryDidcot OX110QXUK

Giant electromagnetic pulses(EMP) generated during the interaction of high-power lasers with solid targets can seriously degrade electrical measurements and equipment. EMP emission is caused by the acceleration of hot electrons inside the target, which produce radiation across a wide band from DC to terahertz frequencies. Improved understanding and control of EMP is vital as we enter a new era of high repetition rate, high intensity lasers(e.g. the Extreme Light Infrastructure).We present recent data from the VULCAN laser facility that demonstrates how EMP can be readily and effectively reduced. Characterization of the EMP was achieved using B-dot and D-dot probes that took measurements for a range of different target and laser parameters. We demonstrate that target stalk geometry, material composition, geodesic path length and foil surface area can all play a significant role in the reduction of EMP. A combination of electromagnetic wave and 3 D particle-in-cell simulations is used to inform our conclusions about the effects of stalk geometry on EMP,providing an opportunity for comparison with existing charge separation models.

关键词： high energy density physics high-power laser related laser components laser plasmas interaction target design and fabrication

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Prediction of Homogeneous Azeotropes for Binary HFCs and HCs Refrigerant Mixtures

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Prediction of Homogeneous Azeotropes for Binary HFCs and HCs...

Demonstration of laser pulse amplification by stimulated Brillouin scattering

2008国际低温与制冷大会

作者： Dong X Q~(* **) Gong M Q~* Zhang Y~* Wu j F~* * Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100080 P.R.China ** Graduate School of the Chinese Academy of Sciences Beijing 100039 P.R.China

＜正＞A simple approach based on newton’s method using Wilson activity coefficients equation and Antoine equation is presented to determine the binary homogeneous azeotropes for hydrofluorocarbons （HFCs） and hydrocarbons（HCs） *** method is verified with the binary systems of R170 + R116 and R125 + *** agreements are found between the predicted results and the literature data.

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High Power Laser Science and Engineering 2014年第4期 46-51页

作者： E.Guillaume K.Humphrey H.Nakamura R.M.G.M.Trines R.Heathcote M.Galimberti Y.Amano D.Doria G.Hicks E.Higson S.Kar G.Sarri M.Skramic j.Swain K.Tang j.Weston P.Zak E.P.Alves R.A.Fonseca F.Fi ′uza H.Habara K.A.Tanaka R.Bingham M.Borghesi Z.Najmudin L.O.Silva P.A.Norreys Laboratoire d'Optique Appliqu′ee Ecole PolytechniquePalaiseau 91128 France STFC Rutherford Appleton Laboratory Didcot Oxon OX11 0QX United Kingdom University of Strathclyde Glasgow G11XQ United Kingdom Blackett Laboratory Imperial College London Prince Consort RoadLondon SW7 2BZ United Kingdom Graduate School of Engineering Osaka University Queens University Belfast Belfast BT7 1NN United Kingdom University of Oxford Parks RoadOxford OX1 3PU United Kingdom

The energy transfer by stimulated Brillouin backscatter from a long pump pulse(15 ps) to a short seed pulse(1 ps)has been investigated in a proof-of-principle demonstration experiment. The two pulses were both amplified in different beamlines of a Nd:glass laser system, had a central wavelength of 1054 nm and a spectral bandwidth of 2 nm, and crossed each other in an underdense plasma in a counter-propagating geometry, off-set by 10?. It is shown that the energy transfer and the wavelength of the generated Brillouin peak depend on the plasma density, the intensity of the laser pulses, and the competition between two-plasmon decay and stimulated Raman scatter instabilities. The highest obtained energy transfer from pump to probe pulse is 2.5%, at a plasma density of 0.17 ncr, and this energy transfer increases significantly with plasma density. Therefore, our results suggest that much higher efficiencies can be obtained when higher densities(above0.25ncr) are used.

关键词： laser–plasma interactions optical pulse generation and compression stimulated Brillouin and Raman scattering ultra-fast optical processes

Study of backward terahertz radiation from intense picosecond laser–solid interactions using a multichannel calorimeter system

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High Power Laser Science and Engineering 2019年第1期7卷 47-53页

作者： H. Liu G.-Q. Liao Y.-H. Zhang B.-j. Zhu Z. Zhang Y.-T. Li G. G. Scott D. Rusby C. Armstrong E. Zemaityte P. Bradford N. Woolsey P. Huggard P. McKenna D. Neely Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences School of Physical Sciences University of Chinese Academy of Sciences Key Laboratory for Laser Plasmas (MoE) and School of Physics and Astronomy Shanghai Jiao Tong University Collaborative Innovation Center of IFSA (CICIFSA) Shanghai Jiao Tong University Central Laser Facility Rutherford Appleton Laboratory Department of Physics SUPA University of Strathclyde Department of Physics York Plasma Institute University of York Space Science Department STFC Rutherford Appleton Laboratory

A multichannel calorimeter system is designed and constructed which is capable of delivering single-shot and broadband spectral measurement of terahertz(THz) radiation generated in intense laser–plasma interactions. The generation mechanism of backward THz radiation(BTR) is studied by using the multichannel calorimeter system in an intense picosecond laser–solid interaction experiment. The dependence of the BTR energy and spectrum on laser energy, target thickness and pre-plasma scale length is obtained. These results indicate that coherent transition radiation is responsible for the low-frequency component(3 THz) of BTR.

关键词： multichannel calorimeter backward terahertz radiation generation mechanisms

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