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Journal of Environmental Science and Engineering(A) 2012年第11期1卷 1279-1287页

作者： Saad Almady Mohamed Khelifi marie-pascale beaudoin Department of Soils and Agri-Food Engineering Universit~ Laval Quebec City QC G1 V OA 6 Canada Agricultural Engineering Department College of Food and Agriculture Sciences King Saud University Riyadh 11451 SaudiArabia Ministry of Agriculture Fisheries and Food of Quebec 801 chemin du Pont Tachd N Alma QC G8B 5W2 Canada

The CPB （Colorado potato beetle） is unquestionably the major insect pest of potato crops in North America, Europe, and Asia. The use of chemical insecticides to control this insect pest started in the 1860s. To date, no registered chemical has been capable of effectively managing this agricultural pest. Moreover, the CPB has developed over the years a resistance to most of the registered chemical insecticides. The biological control through manual release of natural enemies of the CPB has been successful at small scale. However, hand release of these predators at large scale is not realistic. The objective of this study was to investigate the effectiveness of controlling the CPB through mechanical release of predator insects under real conditions in a potato field. Obtained results indicate that the mechanical release of predator insects resulted in a better control of the CPB populations and egg masses than the manual release. The success of this mechanical release of predator insects in potato fields will be highly valuable for the biological control of insect pests in many other row crops such as strawberry, lettuce, etc..

关键词： Colorado potato beetle chemical insecticides biological control mechanical release natural enemies Perillusbioculatus Podisus maculiventris.

Flow fields and particle trajectories beneath a tidal bore:A numerical study

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International Journal of Sediment Research 2018年第3期33卷 351-370页

作者： Adrien Berchet Bruno Simon Anthony beaudoin Pierre Lubin Germain Rousseaux Serge Huberson Institut Pprime Université de Bordeaux

Tidal bores may appear in some estuaries when the tides quickly reach a high level. This phenomenon is rare but has a strong impact during its short duration: i.e. the river bed is significantly eroded and sediments are then transported. In this paper, the trajectories of suspended particles induced by this flow are numerically studied. Four undular bores with Froude numbers between 1.1 and 1.2 are *** similar Froude numbers, various initial flow conditions were selected to produce or not an inversion of the flow direction during the bore passage. The particle trajectories associated with each distinct flow configuration are presented and analyzed. These trajectories, estimated by solving the Maxey-Riley equation, appear to be very different even though the Froude numbers of flows are *** observations are important because the Froude number is often used to characterize a tidal bore as it describes well the free surface, however, it cannot describe the sediment transport. Finally, Chen’s model of wave-current interactions is adapted to fit the cases studied and is applied to the four bores simulated. The results highlight that this latter model can reproduce the observed trajectories and dissociate their different components. From this model, it is shown that the inertial and Basset history effects can be neglected compared to the gravity and flow entrainment effects due to the viscous drag when one wants to determine the long-term trajectories of suspended particles.

关键词： Tidal bores Sediment transport Trajectories Physical modeling Numerical modeling

Nonlinear gallium phosphide nanoscale photonics[Invited]

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Photonics Research 2018年第5期6卷 I0068-I0074页

作者： AUDE MARTIN SYLVAIN COMBRIE ALFREDO DE ROSSI GREGOIRE beaudoin ISABELLE SAGNES FABRICE RAINERI Centre de Nanosciences et de Nanotechnologies CNRSUniversite Paris-SudUniversite Pans-SaclayC2N Marcoussis91460 MarcoussisFrance Thales Research and Technology France 1 avenue Augustin Fresnel91120 PalaiseauFrance Universite Paris Diderot Sorbone Paris Cite75013 ParisFrance

We introduce a nanoscale photonic platform based on gallium phosphide. Owing to the favorable material properties, peak power intensity levels of 50 GW∕cm^2 are safely reached in a suspended membrane. Consequently,the field enhancement is exploited to a far greater extent to achieve efficient and strong light–matter *** an example, parametric interactions are shown to reach a deeply nonlinear regime, revealing cascaded fourwave mixing leading to comb generation and high-order soliton dynamics.

关键词： Nonlinear gallium phosphide nanoscale photonics

Assessment of Mechanical Properties of Muscles from Multi-Parametric Magnetic Resonance Imaging

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Journal of Biomedical Science and Engineering 2014年第8期7卷 593-603页

作者： Renaud Grenier Delphine Périé Guillaume Gilbert Gilles beaudoin Daniel Curnier Mechanical Engineering Department Ecole Polytechnique de Montréal Montreal Canada Notre Dame Hospital University of Montreal Montreal Canada Philips Healthcare Montreal Canada Research Center Sainte-Justine University Hospital Montreal Canada

We hypothesized that a relationship existed between the mechanical properties and the magnetic resonance imaging (MRI) parameters of muscles, as already demonstrated in cartilaginous tissues. The aim was to develop an indirect evaluation tool of the mechanical properties of degenerated muscles. Leg and arm muscles of adult rabbits were dissected, and tested 12 hours post mortem, in a state of rigor mortis, or 72 hours post mortem, in a state of post-rigor mortis. The tests consisted of a multi-parametric MRI acquisition followed by a uniaxial tensile test until failure. The statistical analysis consisted of multiple linear regressions and principal component analysis. Significant differences existed between the rigor mortis and post-rigor mortis groups for E but not for the MRI parameters. 78%, 60% or 33% of the Young’s modulus could be explained by the MRI parameters in the post-rigor mortis group, rigor mortis group or both groups respectively. These relationships were confirmed by the principal component analysis. The proposed multi-parametric MRI protocol associated to principal component analysis is a promising tool for the indirect evaluation of muscle mechanical properties and should be useful to find biomarkers and predictive factors of the evolution of the pathologies.

关键词： Muscles Mechanical Properties Multi-Parametric MRI Multiple Regressions Principal Component Analysis

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拥有地区特色的戏剧区域

建筑与文化 2007年第4期 72-73页

作者： Jean beaudoin co-designer of the Quartier des Spectacles

地区的发展是着力巩固该地区固有的独特性．那就是一个展开的风景。在城市范围内．节日正在永恒不断地创造城市空间．是通过中大型规模街道事件的改变来实现。

关键词：地区特色戏剧城市空间中大型风景

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混凝土科学有关近代研究的专论第1版

Spatiotemporally reconfigurable light in degenerate laser cavities

1986年

作者：（加拿大）V.S.Ramachandran R.F.Feldman J.J.beaudoin

来源：汇雅图书（南通市图书馆... 评论

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Photonics Research 2023年第10期11卷 1751-1756页

作者： A.BARTOLO N.VIGNE M.MARCONI G.beaudoin L.LE GRATIET K.PANTZAS I.SAGNES A.GARNACHE M.GIUDICI UniversitéCôte d’Azur CNRSInstitut de Physique de Nice06200 NiceFrance Institut d’Electronique et des Systèmes CNRS UMR521434000 MontpellierFrance Centre de Nanosciences et de Nanotechnologies CNRS UMR 9001UniversitéParis-Saclay91120 PalaiseauFrance

We show that a Ⅲ-V semiconductor vertical external-cavity surface-emitting laser(VECSEL) can be engineered to generate light with a customizable spatiotemporal structure. Temporal control is achieved through the emission of temporal localized structures(TLSs), a particular mode-locking regime that allows individual addressing of the pulses traveling back and forth in the cavity. The spatial profile control relies on a degenerate external cavity, and it is implemented due to an absorptive mask deposited onto the gain mirror that limits the positive net gain within two circular spots in the transverse section of the VECSEL. We show that each spot emits spatially uncorrelated TLSs. Hence, the spatiotemporal structure of the light emitted can be shaped by individually addressing the pulses emitted by each spot. Because the maximum number of pulses circulating in the cavity and the number of positive net-gain spots in the VECSEL can be increased straightforwardly, this result is a proof of concept of a laser platform capable of handling light states of scalable complexity. We discuss applications to three-dimensional alloptical buffers and to multiplexing of frequency combs that share the same laser cavity.

关键词： light cavity mirror

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地体沿走滑断层位移期间的下地壳变形

地震地质译丛 1995年第4期17卷 31-37页

作者： B.C.beaudoin 段瑞涛

1.引言沿汇聚边界,板块驱动力表现为冲断层、褶皱、水平位移和俯冲为主的活动。在俯冲状态下,与板块相对运动有关的变形和水平位移程度可能与上、下板块的耦合作用有关系。在这种背景下,斜向汇聚经常介于下冲断层和走滑断层作用之间。... 详细信息

1.引言沿汇聚边界,板块驱动力表现为冲断层、褶皱、水平位移和俯冲为主的活动。在俯冲状态下,与板块相对运动有关的变形和水平位移程度可能与上、下板块的耦合作用有关系。在这种背景下,斜向汇聚经常介于下冲断层和走滑断层作用之间。沿汇聚边缘,被俘获在斜向汇聚板块之间的地体经常以平行于边界方向位移很远。这里我们检查一下平行于边界的位移对增生的地体下的下地壳韧性结构发展的影响。

关键词：地体走滑断层位移下地壳变形地震地质

不列颠哥伦比亚东南部Kokanee地区始新世Ag-Pb-Zn-Au脉状和交代矿床成矿年龄

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地质科学译丛 1993年第2期10卷 29-39页

作者： G. beaudoin 刘金山李杨 Ottawa-Carleton Geoscience Centre Depanment of Gelogogy University of Ottawa Ont. Canada KIN 6N5

位于不列颠哥伦比亚东南部的Kokanee地区的Ag-Pb-Zn-Au脉状和交代矿床赋存于Slocan湖区深断裂上盘的中侏罗Nelcon岩基及其外围的寒武纪到三叠纪的变质沉积岩中.变质证据表明成矿作用晚于Nelson岩基和Ainsworth地区中侏罗纪的片理化作用... 详细信息

位于不列颠哥伦比亚东南部的Kokanee地区的Ag-Pb-Zn-Au脉状和交代矿床赋存于Slocan湖区深断裂上盘的中侏罗Nelcon岩基及其外围的寒武纪到三叠纪的变质沉积岩中.变质证据表明成矿作用晚于Nelson岩基和Ainsworth地区中侏罗纪的片理化作用,而早于(或同时)Slocan深断裂下盘的Valballa变质核杂岩的始新世揭顶活动时期.煌班岩墙和辉长岩墙与成矿作用明显地是同期的,通过对其中黑云母和角闪石的K-Ar同位素年龄研究,确定了40到52Ma时的始新世中期一次短暂的碱性岩浆活动.而更老一次早白垩纪另一次碱性岩浆活动(141～129Ma)的存在是可能的,但尚未完全证实.通过对矿脉和热液蚀变带中白云母进行的K-Ar法和分阶段加热的^(40)Ar/^(39)Ar法同位素年龄研究,可确定成矿热液沉淀形成脉状矿床和形成交代矿床的时间为58～59Ma,矿体与煌斑岩墙之间相互穿插关系表明,该矿区热液系统的活动持续了15Ma以上.始新世地壳拉张运动导致了高温热流体及作为成矿热液流动通道的构造体系的形成.Nelson岩基与成矿作用在时间上相差100Ma,两者之间仅有空间上的联系,没有成因上的联系,空间上的伴生不代表成因的联系.

关键词：矿床成矿年龄脉状矿床镁铷

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数字时代远程开放教育:美国篇

中国远程教育 2019年第8期 35-46,93页

作者：迈克尔·博杜安肖俊洪汕头广播电视大学

约50年前,一些著名的未来学家呼吁大学关注'稳定状态之外'的生活,预言信息时代将迫使学术界适应'步伐越来越快的变革'。这些富有远见关于未来的言论在过去近50年里成为美国高等教育的特点,远程教育在这个过程当中所扮演的角色也许是一... 详细信息

约50年前,一些著名的未来学家呼吁大学关注'稳定状态之外'的生活,预言信息时代将迫使学术界适应'步伐越来越快的变革'。这些富有远见关于未来的言论在过去近50年里成为美国高等教育的特点,远程教育在这个过程当中所扮演的角色也许是一个最好的例子。远程教育早在电子时代来临之前就已经在美国这个舞台上取得长足发展,有近300年的历史。远程教育也许是代表一千年来学术界最有意义转型的一种现象,既带来令人兴奋的机会,也提出艰巨的挑战。笔者有35年的远程教育研究和实践经验,本文基于笔者的认识对美国中学后远程教育的重要方面进行描述、分析和述评。

关键词：技术辅助学习破坏性技术趋势数字时代战略资产认证