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日粮维生素和采精频率对公猪生产性能和精液品质的影响

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饲料博览 2009年第6期19卷 44-44页

作者： audet i Bérubé N Bailey J L Laforest J P Matte J J

试验旨在研究日粮中添加维生素对商品公猪维生素代谢和精液品质的相关性,同时评价添加维生素对公猪集中采精的效能。共分为两个试验:试验1,选择39头公猪随机分为2个处理,分别为对照组和试验组,对照组饲喂基础日粮,试验组在基础日粮的基... 详细信息

试验旨在研究日粮中添加维生素对商品公猪维生素代谢和精液品质的相关性,同时评价添加维生素对公猪集中采精的效能。共分为两个试验:试验1,选择39头公猪随机分为2个处理,分别为对照组和试验组,对照组饲喂基础日粮,试验组在基础日粮的基础上添加脂溶性和水溶性维生素。每个处理采取2种采精方式(即每2周3次和每1周3次),为期12周。然后将所有的公猪集中采精2周,再休息4周不采精,以后每周采精2次。此后把采精频率颠倒,直到集中采精期。试验2,选择252头公猪随机分为2个处理,分别为对照组和试验组,日粮组成同试验1,所有的公猪每周采精2次,为期6周。检测精液和精子质量,收集血样分析维生素的浓度。结果显示:试验1中,试验组公猪血液中的维生素浓度和精浆显著增加(P0.14)。试验组12周精液量显著增加(P0.28)。与2周采精3次相比,每周采精3次的公猪每次射精量显著减少(P0.61)。试验结果表明,日粮中添加脂溶性和水溶性维生素增加了可用于动物维生素的数量,采精频率对维生素状况无影响,此外日粮中添加维生素对精子的产生和质量无影响。

关键词：公猪采精频率精子维生素

Novel ecosystems in ecological restoration and rehabilitation:innovative planning or lowering the bar?

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Ecological Processes 2014年第1期3卷 186-189页

作者： Michael P Perring Patrick audet David Lamb Ecosystem Restoration and intervention Ecology Research Group School of Plant BiologyThe University of Western Australia35 Stirling HighwayPerth(Crawley)WA 6009Australia Northern Forestry Centre Canadian Forestry ServiceNatural Resources Canada5320-122nd StreetEdmontonABT6H 3S5Canada Centre for Mined Land Rehabilitation Sustainable Minerals InstituteThe University of QueenslandSir James Foots BuildingBrisbane(St Lucia)QLD 4072Australia

Stemming from a special symposium at the 2012 inaugural meeting of the Society for Ecological Restoration Australasia in Perth,Western Australia,this special issue editorial addresses novel ecosystems in ecological restoration and the inherent challenges of maintaining the highest standards of environmental stewardship and biological conservation in the face of increasing urbanization,agricultural expansion,and *** others,we(the Guest Editors)view novel ecosystems as offering opportunities for conservation and restoration in the coming years and a pragmatic recognition that it may not always be possible,or desirable,to overcome adverse consequences of environmental degradation to reinstate historical *** mindful of hubris and taking into account difficulties with identification,novel ecosystems may be viewed as a temporary or interim stage on the way towards the evolution of other future ecosystems able to supply a variety of ecosystem services,while attempting to maintain and enhance biodiversity,function and ***,a concise summary of contributions to the special issue and their significance to the field of restoration ecology is provided noting that authors were tasked to answer whether novel ecosystems are innovative planning or lowering the bar in ecological *** themes shared by the manuscripts are elucidated leading to guiding principles and,more importantly,an assessment of how and why restoration priorities are changing in the 21^(st)century.

关键词： ecosystems restoration consequences

Comparative transcriptomics of anadromous and resident brook charr Salvelinus fontinalis before their first salt water transition

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Current Zoology 2012年第1期58卷 158-170页

作者： Boulet, Marylène Normandeau, Éric Bougas, Bérénice audet, Céline mboulet@ubishops.ca Bernatchen, Louis iBiS (institut de Biologie intégrative et des Systèmes) Université Laval Québec QC G1V 0A6 Canada iSMER Université du Québec à Rimouski Rimouski QC G5L 3A1 Canada

Most salmonid taxa have an anadromous life history strategy, whereby fish migrate to saltwater habitats for a growth period before returning to freshwater habitats for spawning. Moreover, several species are characterized by different life history tactics whereby resident and anadromous forms may occur in genetically differentiated populations within a same species, as well as polymorphism within a population. The molecular mechanisms underlying the physiological differences between anadromous and resident forms during the first transition from freshwater to saltwater environments are only partially understood. insofar re- search has typically focused on species of the genus Salmo. Here, using a 16,000 cDNA array, we tested the hypothesis that ana- dromous brook charr Salvelinus fontinalis are characterized by differences in their transcriptome relative to resident brook charr before the anadromous fish migration. Families originating from parapatric populations of anadromous and resident charr were reared in controlled environments mimicking natural temperature and photoperiod, and sampled in spring, while still in fresh wa- ter. While anadromous and resident charr showed similar transcriptome profiles in white muscle, they were characterized by striking differences in their gill transcriptome profiles. Genes that were upregulated in the gills of anadromous charr were princi- pally involved in metabolism （mitochondrial electron transport chain, glucose metabolism, and protein synthesis）, development （tissue differentiation） and innate immunity. We discuss the nature of these transcriptomic differences in relation to molecular mechanisms underlying the expression of anadromous and resident life history tactics and suggest that the anadromous charr express some of the molecular processes present in other migratory salmonids [Current Zoology 58 （1）： 158-170, 2012].

关键词： Transcriptome Life history tactics Anadromy Migration to salt water Ecotypes Salmohids

Structural development of vegetation on rehabilitated North Stradbroke island:Above/belowground feedback may facilitate alternative ecological outcomes

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Ecological Processes 2013年第1期2卷 195-211页

作者： Patrick audet Amanda Gravina Vanessa Glenn Phill McKenna Helen Vickers Melina Gillespie David Mulligan Centre for Mined Land Rehabilitation Sustainable Minerals Institute The University of QueenslandBrisbane(St.Lucia)QLD 4072Australia

introduction:This study depicts broad-scale revegetation patterns following sand mining on North Stradbroke island,south-eastern Queensland,***:Based on an ecological timeline spanning 4–20 years post-rehabilitation,the structure of these ecosystems(n=146)was assessed by distinguishing between periods of‘older’(pre-1995)and‘younger’(post-1995)rehabilitation ***:The general rehabilitation outlook appeared promising,whereby an adequate forest composition and suitable levels of native biodiversity(consisting of mixed-eucalypt communities)were achieved across the majority of rehabilitated sites over a relatively short ***,older sites(n=36)appeared to deviate relative to natural analogues as indicated by their lack of under-storey heath and simplified canopy composition now characterised by mono-dominant black sheoak(Allocasuarina littoralis)reaching up to 60%of the total tree *** changes coincided with lower soil fertility parameters(e.g.,total carbon,total nitrogen,and nutrient holding capacity)leading us to believe that altered growth conditions associated with the initial mining disturbance could have facilitated an opportunistic colonisation by this *** established,it is suspected that the black sheoak’s above/belowground ecological behaviour(i.e.,relating to its leaf-litter allelopathy and potential for soil-nitrogen fixation)further exacerbated its mono-dominant distribution by inhibiting the development of other native ***:Although rehabilitation techniques on-site have undergone refinements to improve site management,our findings support that putative changes in edaphic conditions in combination with the competitive characteristics of some plant species can facilitate conditions leading to alternative ecological outcomes among rehabilitated *** on these outcomes,future studies would benefit from in depth spatio-temporal analyses to verify these mechanisms at finer investigative sc

关键词： Eucalypts Mono-dominance Forest regeneration Ecological restoration Mineral sands Mining

Blockly earthquake transformer:A deep learning platform for custom phase picking

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Artificial intelligence in Geosciences 2023年第1期4卷 84-94页

作者： Hao Mai Pascal audet H.K.Claire Perry S.Mostafa Mousavi Quan Zhang Department of Earth and Environmental Sciences University of OttawaOttawaCanadaK1N 6N5 Canadian Hazards information Service Natural Resources CanadaOttawaCanadaK1A 0E7 Department of Geophysics Stanford UniversityStanford94305USA

Deep-learning(DL)algorithms are increasingly used for routine seismic data processing tasks,including seismic event detection and phase arrival *** many examples of the remarkable performance of existing(i.e.,pre-trained)deep-learning detector/picker models,there are still some cases where the direct applications of such models do not generalize *** such cases,substantial effort is required to improve the performance by either developing a new model or fine-tuning an existing *** address this challenge,we present Blockly Earthquake Transformer(BET),a deep-learning platform for efficient customization of deep-learning phase *** implements Earthquake Transformer as its baseline model,and offers transfer learning and fine-tuning *** provides an interactive dashboard to customize a model based on a particular *** the parameters are specified,BET executes the corresponding phase-picking task without direct user interaction with the base *** the transfer-learning module,BET extends the application of a deep-learning P and S phase picker to more specific phases(e.g.,Pn,Pg,Sn and Sg phases).in the fine-tuning module,the model performance is enhanced by customizing the model *** no-code platform is designed to quickly deploy reusable workflows,build customized models,visualize training processes,and produce publishable figures in a lightweight,interactive,and open-source Python toolbox.

关键词： Earthquake detection Seismic phase identification Deep learning Seismology

Prey quality impact on the feeding behavior and lipid composition of winter flounder(Pseudopleuronectes americanus)larvae

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Aquaculture and Fisheries 2018年第4期3卷 145-155页

作者： Maria Angelica Martinez-Silva Celine audet Gesche Winkler Rejean Tremblay institute de sciences de la mera Rimouski Universite du Quebeca Rimouski310 Allee des UrsulinesRimouskiQC G5L 2Z9Canada

Copepods are the main natural food of many marine fish ***,enriched rotifers are the most commonly used live prey in larval *** on the feeding behavior,growth,survival,and fatty acid(FA)composition of winter flounder larvae fed with copepods and rotifers were determined and compared to the FA composition of the two live *** of Eurytemora *** Acartia sp.,two of the main species of copepods present in the *** estuary,showed no significant differences in their essential fatty acid profiles,suggesting similar nutritional ***,only Eurytemora herdmani was compared to enriched rotifers in this *** nauplii were characterized by higher levels of essential fatty acids,particularly docosahexaenoic acid(DHA)and eicosapentaenoic acid(EPA).The selective incorporation of essential fatty acids from diets in larval tissues(polar lipids)indicated that nauplii might better fulfill larval nutritional requirements for DHA than ***,larval behavior was modified according to the diet:larvae fed with nauplii spent more time swimming with no changes in the occurrence of hunting events.

关键词： Winter flounder Copepods Rotifers Nutrition Fatty acids

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高速传输中色度色散的影响

电信科学 2009年第1期25卷 12-13页

作者： Francis audet EXFO公司光业务部

1 前言色度色散（chrom atic dispersion，CD）广为人知已有近10年，然而始终没能系统地完成对10Gbit／s传输色散的测试。与以前相比，现在更需要对CD进行测试，因为核心网的光传输距离已经达到前所未有的长度，城域网出现了网状网拓扑... 详细信息

1 前言色度色散（chrom atic dispersion，CD）广为人知已有近10年，然而始终没能系统地完成对10Gbit／s传输色散的测试。与以前相比，现在更需要对CD进行测试，因为核心网的光传输距离已经达到前所未有的长度，城域网出现了网状网拓扑，40Gbit／s或更高速传输系统正在投入应用。这些带来了更大的CD风险。

关键词：高速传输系统色度色散 10Gbit/s 传输距离核心网网状网城域网测试

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40 Gbit/s传输中色散的管理和控制

电信科学 2008年第10期24卷 8-11页

作者： Francis audet EXFO Electro-Optical Engineering光学业务部门

本文介绍了光传输速率从10 Gbit/s提高到40 Gbit/s时遇到的各种问题,分析了相应的解决方案,包括各种调制技术和补偿方案,最后重点分析了40 Gbit/s传输中面临的PMD问题及其解决思路。

关键词：色散色度色散 40 Gbit/s传输偏振模色散

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40 Gbit/s传输技术的测试及挑战

电信科学 2008年第9期24卷 15-17页

作者： Francis audet EXFO

尽管40 Gbit／s传输技术在十多年前就出现了，但一直处于实验状态。随着电信行业的不断复苏，40 Gbit／s传输技术的研究取得了可喜的进展。第一个40 Gbit／s商用系统于2005年成功部署，运营商已逐渐认识到这种技术的显著优势，市场对这... 详细信息

尽管40 Gbit／s传输技术在十多年前就出现了，但一直处于实验状态。随着电信行业的不断复苏，40 Gbit／s传输技术的研究取得了可喜的进展。第一个40 Gbit／s商用系统于2005年成功部署，运营商已逐渐认识到这种技术的显著优势，市场对这种技术的需求在稳步增长。

关键词：传输技术测试电信行业商用系统运营商