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Plasma Science and Technology 2009年第2期11卷 187-193页

作者： J.O.KAmGANG m.NAITALI J.-m.HERRY m.-N.BELLON-FONTAINE J.-L.BRISSET R.BRIANDET Laboratory of Interfacial Electrochemistry and Analytical Chemistry University of Rouen INRA(National Institute for Agricultural Research) UMR 763 Bio-adhesion and Hygiene of Materials AgroParisTech UMR 763 Bio-adhesion and Hygiene of Materials AgroParisTech UMR763 Bio-adhesion and Hygiene of Materials

This study addressed the effects of treatment with gliding discharge plasma on the surface properties of solid materials, as well as the consequences concerning adherence of a model bacterium. As evaluated by contact angles with selected liquids, plasma treatment caused an increase in surface hydrophilicity and in the Lewis acid-base components of the surface energy of all materials tested. These modifications were more marked for low density polyethylene and stainless steel than for polytetrafiuoroethylene. After treatment, the hydrophilicity of the materials remained relatively stable for at least 20 days. moreover, analysis of the topography of the materials by atomic force microscopy revealed that the roughness of both polymers was reduced by glidarc plasma treatment. As a result of all these modifications, solid substrates were activated towards micro-organisms and the adherence of S. epidermidis, a negatively charged Lewis-base and mildly hydrophilic strain selected as the model, was increased in almost all the cases tested.

关键词： gliding arc plasma surface energy properties polymers stainless steel surface hydrophilicity atomic force microscopy

mitigating the effects of higher order multipole fields in the magnets of the Accelerator Test Facility 2 at KEK

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Chinese Physics C 2012年第8期36卷 756-760页

作者：白莎 P. Bambade 王逗高杰 m. Woodley m. masuzawa Institute of High Energy Physics (IHEP) LAL Univ Paris-Sud CNRS/IN2P3 Orsay France SLAC Menlo Park California USA KEK Tsukuba Ibaraki Japan

The ATF2 project is the final focus system prototype for the ILC and CLIC linear collider projects, with the purpose of reaching a 37nm vertical beam size at the interaction point. In the nanometer beam size regime, higher order multipoles in magnets become a crucial point for consideration. The strength and rotation angle of the ATF2 QEA magnets were reconstructed from the IHEP measurements and compared with the KEK ones to be identical. Based on the study of the skew multipoles sensitivity, we report on the analysis of the possible mitigation of the measured multipoles. A suggestion is given which will benefit the ATF2 present commissioning to reach the goal beam size, and also the reduced β optics in future.

关键词： ATF2 beam size higher order multipoles QEA magnets

Assessment of Ecotoxicity of Topsoils from a Wood Treatment Site

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Pedosphere 2009年第2期19卷 143-155页

作者： m. mENCH C.BES UmR BIOGECO INRA 1202 Ecology of Communities University of Bordeaux 1 Bt B8 RdC Estgate 002Avenue des Facults F-33405 Talence (France) UmR BIOGECO INRA 1202 Ecology of CommunitiesUniversity of Bordeaux 1Bt B8 RdC Estgate 002 Avenue des Facults F-33405 Talence (France)

A series of 9 soil samples were taken at a timber treatment site in SW France where Cu sulphate and chromated copper arsenate （CCA） have been used as wood preservatives （Sites P1 to P9） and one soil sample was collected at an adjacent site on the same soil type （Site P10）. Copper was a major contaminant in all topsoils, varying from 65 （Soil P5） to 2600 mg Cu kg^-1 （Soil P7）, exceeding background values for french sandy soils. As and Cr did not accumulate in soil, except at Site P8 （52 mg As kg^-1 and 87 mg Cr kg^-1） where CCA-treated posts were stacked. Soil ecotoxicity was assessed with bioassays using radish, lettuce, slug Arion rufus L., and earthworm Dendrobaena octaedra （Savigny）. There were significantly differences in lettuce germination rate, lettuce leaf yield, radish root and leaf yields, slug herbivory, and earthworm avoidance. An additional bioassay showed higher negative impacts on bean shoot and root yields, Rhizobium nodule counts on Bean roots, and guaiacol peroxidase activity in primary Bean leaves for soil from Site PT, with and without fertilisation, than for soil from Site P10, despite both soils having a similar value for computed free ion Cu2＋ activity in the soil solution （pCu^2＋）. Beans grown in soil from Site P7 that had been fertilised showed elevated foliar Cu content and phytotoxic symptoms. Soils from Sites P7 （treatment plant） and P6 （storage of treated utility poles） had the highest ecotoxicity, whereas soil from Site P10 （high organic matter content and cation exchange capacity） had the lowest. Except at Site P10, the soil factor pCu^2＋ computed with soil pH and total soil Cu could be used to predict soil ecotoxicity.

关键词： contaminated soil copper ecotoxicity test invertebrate plant.

Structured Estimation of Tire Forces and the Ground Slope Using Sm Observers

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International Journal of Automation and computing 2014年第2期11卷 197-204页

作者： Belgacem Jaballah Nacer Kouider m'Sirdi Laboratory of the Sciences of the Information and the Systems LSIS CNRS UMR 7296 Domaine Universitaire St Jerome Avenue Escadrille Normandie Niemen13397 Marseille France

In agricultural context, the principal cause of serious accidents for all-terrain vehicles(ATVs) is rollover. The most important parameters related to this risk is the ground slope. In this paper, we propose a structured observer to estimate the system states and the longitudinal tire forces using only wheel angular velocities measurement. The robust estimation is based on a second order sliding mode observer. This estimation is then used to build up a ground slope estimation. The algorithm is composed by two cascaded estimators. This structured estimation is then applied to the model of an agricultural vehicle G7(GregoireTm) integrated in the driving simulation environment SCANeRTm-Studio.

关键词： All-terrain vehicles rollover situation sliding modes observers longitudinal tire forces ground slope.

Hidden periodicity in Stripe 82 with Saraswati supercluster—a fractal analysis

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Communications in Theoretical Physics 2021年第1期73卷 71-77页

作者： Vimal Raj m S Swapna S Sankararaman Department of Optoelectronics University of KeralaTrivandrumKerala695581-India

The manuscript attempts to explore the periodicity in the distribution of galaxies in the recently reported Saraswati supercluster and the Stripe 82 region containing it as an *** report of 120 mpc periodicity in the Abell galaxy clusters by power spectrum analysis is the motivation behind the *** power spectral analysis across the central part of the Stripe 82 region shows a periodic variation of 3.09°or 71 mpc in fractal dimension whereas an average angular periodicity of 3.45°or 94 mpc is observed across the Stripe 82 *** refers to the periodicity of complexity or cluster density of galaxy *** texture of the distribution pattern understood through lacunarity analysis indicates a near symmetric *** dimensions like box-counting dimension,information dimension and correlation dimension are also found through multifractal *** the information dimension tells about the distribution density of galactic points,the correlation dimension details the distribution of galaxies in the neighbourhood.

关键词： galaxy distribution fractal analysis multifractals lacunarity Saraswati supercluster Stripe 82

Dual Wavelengh Pr:YLF Laser

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Chinese Journal of Lasers 1995年第3期 207-210页

作者： RUAN Shuangchen(Xi’an Institute of Optics and Fine mechanics,Academia Sinica, XI’an 710068, China)J. m. Sutherland, P. m. W. french, J. R. Taylor(Physics Department, Imperial College, UK)B. H. T. Chai(Center for Research in Electro-Optics and Lasers, Univ

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关键词： Pr: YLF laser dual wavelength operating

magnetic and specific heat studies of the frustrated Er_2mn_2O_7 compound

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Journal of Rare Earths 2013年第1期31卷 54-59页

作者： N.Ben Amor m.Bejar E.Dhahri m.A.Valente P.Lachkar E.K.Hlil Laboratory of Applied Physics Faculty of Sciences of SfaxBP 1171University of Sfax I3N and Physics Department University of Aveiro mCmF Néel InstitutCNRS25 avenue des MartyrsBuilding FBP 16638042 Grenoble cedex 9France mCBT Institut NéelCNRS25 avenue des MartyrsBuilding EBP 16638042 Grenoble cedex 9France

A new Erzmn207 compound was synthesized by the ceramic method and its crystal structure was characterized LJsing powder X-ray diffraction （XRD） and observed by scanning electron microscopy （SEm）. The magnetic properties were investigated using a BS2 magnetometer and the heat capacity was studied using a quantum design （PPmS）. The structural study revealed that this compound was monophasic and crystallized in the monoclinic system with the P2/m space group. magnetization measurements were carried out in the temperature range of 1.8-200 K under an applied magnetic field of 0.05 T. A crossover from a room temperature para- magnetic phase to an antiferromagnetic one at low temperature was detected from the magnetic study. The magnetic susceptibility, in the paramagnetic region above 40 K, was found to present a simple Curie-Weiss type behavior. From the specific heat （G,） measurements in magnetic fields up to 5 T, we noted the presence of a wide peak characteristic of a second order magneto-structural transition.

关键词： magnetic frustration magnetic phase transition specific heat rare earths

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牛顿力学 1

牛顿力学 1

丛书名：美国m.I.T.物理学导论丛书

1978年

作者：（美）弗伦奇（A.P.french）郭敦仁何成钧译

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牛顿力学 3 1

牛顿力学 3

One and Two Photon Excitation of Radiofrequency Trapped Ca

丛书名： (美国m.I.T物理学导论丛书)

1982年

作者：（美）弗伦奇（A.P.french）郭敦仁何成钧译

本册包括三章:惯性力和非惯性系;有心力作用下的运动;广延系统和转动力学,以及附录。本册还包括本书第一、第二、第三册的全部习题的答案。

ISBN: (纸本)13012;0720

本册包括三章:惯性力和非惯性系;有心力作用下的运动;广延系统和转动力学,以及附录。本册还包括本书第一、第二、第三册的全部习题的答案。

关键词：力学

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Chinese Journal of Chemical Physics 2009年第2期22卷 119-122页

作者： C. Zumsteg C. Champenois D. Guyomarc'h G. Hagel m. Houssin m. Knoop Physique des Interactions Ioniques et moléculaires (CNRS UmR 6633) Université de Provence Centre de Saint Jérome Case C21 13397 Marseille Cedex 20 France

Radiofrequency （rf） trapped ions are versatile candidates for a large panel of applications ranging from quantum information to the creation of cold molecules. Sample size can range from a single to 10^6 ions, and the internal and external energy states of the atoms can be controlled with high precision. In the experiment, we focus on different protocols related to frequency metrology using rf trapped Ca.

关键词： Radiofrequency trapped ion Frequency metrology Laser stabilisation