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Surface reactivity in Tropical Highly Weathered Soils and Implications for rational Soil Management

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Pedosphere 2004年第4期14卷 409-423页

作者： r.moreau J.PETArD research Institute for Development(IrD) 911 Avenue AgropolisBP 6450134394 Montpellier Cedex 5(France).Research Institute for Development(IRD)911 Avenue AgropolisBP 6450134394 Montpellier Cedex 5(France).

Highly weathered soils are distributed in the humid and wet-dry tropics, as well as in the humid subtropics. As a result of strong weathering, these soils are characterized by low activity clays, which develop variable surface charge and related specific properties. Surface reactions regarding base exchange and soil acidification, heavy metal sorption and mobility, and phosphorus sorption and availability of the tropical highly weathered soils are reviewed in this *** controlling surface reactivity towards cations and anions, including ion exchange and specific adsorption processes, are discussed with consideration on practical implications for rational management of these soils. Organic matter content and pH value are major basic factors that should be controlled through appropriate agricultural practices, in order to optimise favorable effects of colloid surface properties on soil fertility and environmental quality.

关键词： heavy metal highly weathered soils phosphorus tropical soil management variable charge minerals

第四纪红粘土发育的红壤在施用石灰和石膏后元素的淋溶特征

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土壤学报 2000年第1期37卷 50-61页

作者：孙波 moreau,r 中国科学院南京土壤研究所南京210008

本文利用模拟土柱试验研究了施用石灰和石膏对第四纪红粘土发育的红壤中元素淋溶过程的影响。结果表明，施用石灰后１０ｃｍ土层中除Ｃａ２＋以外的阳离子元素的淋失量减少，而ＳＯ2-4；一和ＨＣＯ-３的淋失量增加；施用石膏后１０ｃｍ... 详细信息

本文利用模拟土柱试验研究了施用石灰和石膏对第四纪红粘土发育的红壤中元素淋溶过程的影响。结果表明，施用石灰后１０ｃｍ土层中除Ｃａ２＋以外的阳离子元素的淋失量减少，而ＳＯ2-4；一和ＨＣＯ-３的淋失量增加；施用石膏后１０ｃｍ土层中所有阳离子元素、特别是Ａｌ３＋的淋失量增加。红壤中Ｃａ２＋的淋失以自由态为主，施用石膏后与ＳＯ２－４结合的比例增加。不同处理中３０ｃｍ土层处铝的淋失以自由态为主；１０ｃｍ土层处铝的淋失在石灰处理中以羟基铝为主，在石膏处理中初期与ＳＯ２－４结合的比例增加，后期主要以自由态淋失。除了施用石灰的表层红壤溶液中羟基铝比例增加外，在所有的亚表层红壤溶液中以及施用石膏的表层红壤溶液中与ＳＯ２－４结合的铝比例增加。

关键词：第四纪红壤元素淋溶石灰石膏土壤改良

具有强磁场的液态金属磁流体力学——关于欧洲力学座谈会的报道

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力学情报 1977年第2期 76-93页

作者： J.C.r.HUNT r.moreau 毛斌

本文是第一次举行的有关磁流体力学(MHD)的欧洲力学座谈会的纪要。会议由欧洲力学座谈会与国立科研中心共同组织,从1976年3月16日—19日在Grenoble举行,来自10个国家的60位专家与会。提出的一些报告涉及层流和湍流MHD管道流;MHD中的传... 详细信息

本文是第一次举行的有关磁流体力学(MHD)的欧洲力学座谈会的纪要。会议由欧洲力学座谈会与国立科研中心共同组织,从1976年3月16日—19日在Grenoble举行,来自10个国家的60位专家与会。提出的一些报告涉及层流和湍流MHD管道流;MHD中的传热和两相流;磁场对不稳定性和湍流的影响;流动测量方法;MHD在冶金工业、钠技术和液态金属动力发电上的应用。我们的主要结论是:在MHD方面现有的研究成

关键词：液态金属导电率流体雷诺数 rEYNOLDS数层流流动流体流动 MHD 湍流流动紊流流动粘性流动均匀湍流二次流哈特曼数矩形管道管道流磁流体力学座谈会欧洲

从容器玻璃熔窑产量上的提高看玻璃液上方热交换的作用

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从容器玻璃熔窑产量上的提高看玻璃液上方热交换的作用

橡胶树树皮坏死:症状学、病原学、流行病学方面的发展和树干生理病症的发因

2007年全国玻璃窑炉技术研讨交流会

作者： r.moreau G.Tackels A.Zanoli 西普公司窑炉部

在以往的25年中,生产容器玻璃的熔窑,每平方米炉床面积,日产玻璃液的平均值增加了75%,也即在1960年,日产3吨玻璃液需1.8m,而现今只需1m的熔化面积。一些高产熔窑的熔化率能在3.5t/m·d 以上,并未影响玻璃的质量。增加熔窑产量的方案,要... 详细信息

在以往的25年中,生产容器玻璃的熔窑,每平方米炉床面积,日产玻璃液的平均值增加了75%,也即在1960年,日产3吨玻璃液需1.8m,而现今只需1m的熔化面积。一些高产熔窑的熔化率能在3.5t/m·d 以上,并未影响玻璃的质量。增加熔窑产量的方案,要从熔窑的作业参数和筑炉时所用的耐火材料两个方面去努力,这是本文阐述之内容。

关键词：容器玻璃熔窑产量产品质量玻璃液热交换燃烧

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热带农业科技 2005年第3期28卷 1-9,F0003页

作者： D.Nandris r.moreau F.Pellegrin H.Chrestin 法国发展研究院蒙彼利埃中心植物病理实验室法国发展研究院蒙彼利埃中心土壤学实验室法国发展研究院蒙彼利埃中心细胞分子生理实验室

橡胶树排胶障碍是制约全球橡胶种植园发展的主要因素,它是由以下两个不同病症导致的:(1)割面干涸(TPD)-过度割胶引起的可逆生理反应,(2)割面树皮坏死(BN)-由橡胶树根颈韧皮部扩展的不可逆病变。树皮坏死(BN)目前危害了世界大部分胶园,... 详细信息

橡胶树排胶障碍是制约全球橡胶种植园发展的主要因素,它是由以下两个不同病症导致的:(1)割面干涸(TPD)-过度割胶引起的可逆生理反应,(2)割面树皮坏死(BN)-由橡胶树根颈韧皮部扩展的不可逆病变。树皮坏死(BN)目前危害了世界大部分胶园,胶园受害严重度取决于橡胶品种、树龄、种植地和种植地区。橡胶树树皮病的多态性一直是一个有争议的问题,通过对许多胶园的调研,该问题最近得到了解决。虽然前期和最近的病原分析不具决定性,但是环境因素却显示出同树皮坏死有联系。在对近期开割的胶园进行流行病调查,发现早期患病胶树地点呈非随机性。这些易发病区主要靠近沼泽地、路旁、风干行、原推土机过道、树林树桩残余地和斜坡缓冲地段的附近区域。在树皮坏死发生区,虽然没有发现与土壤化学因素有明显的关系,但是,土壤物理分析(如透度法)却表明,土壤的较高紧实度常同患病胶树的根系生长较弱有关联。另外,通常在芽接点接合处可以很好地观察到树皮坏死早期症状。通过PMS压力室获得的大量可比生态生理的测量数据显示,患病胶树呈现水分协迫特征,意味着病树树干同其根系存在着一种非理想的维管关系。因此,同土壤紧实度相关的土壤缺水状况、旱季不能满足胶树水分需求的脆弱根系、被扰乱的树液流动和土壤排水等因素的共同作用,被怀疑是诱导树干接芽区树皮坏死(坏死向上扩展到割面) 生理的一个主要外部诱因。在这些协迫的作用下,细胞与分子研究显示,橡胶树生理失调是导致树皮坏死迅速扩展的原因。在这些协迫的作用下,在胶树芽接部位的细胞破裂,释放极具扩散性的高浓度氰化物。在患病胶树的韧皮部生氰和解氰活动的极不协调,以及氰化物的释放,导致其周围的细胞受到毒害。最后, 这样一种多学科的研究方法为由协迫诱导的多因素生理病害研究提供了一个完整的新模式。

关键词：三叶橡胶树皮坏死割面干涸症状学病原学流行病学

Machine Learning Techniques in Predicting Hot Deformation Behavior of Metallic Materials

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 713-732页

作者： Petr Opela Josef Walek Jaromír Kopecek Department of Metallurgical Technologies Faculty of Materials Science and TechnologyVSB–Technical University of OstravaOstrava70800Czech Republic FZU—Institute of Physics of the Czech Academy of Sciences Prague18200Czech Republic

In engineering practice,it is often necessary to determine functional relationships between dependent and independent *** relationships can be highly nonlinear,and classical regression approaches cannot always provide sufficiently reliable ***,Machine Learning(ML)techniques,which offer advanced regression tools to address complicated engineering issues,have been developed and widely *** study investigates the selected ML techniques to evaluate their suitability for application in the hot deformation behavior of metallic *** ML-based regression methods of Artificial Neural Networks(ANNs),Support Vector Machine(SVM),Decision Tree regression(DTr),and Gaussian Process regression(GPr)are applied to mathematically describe hot flow stress curve datasets acquired experimentally for a medium-carbon *** the GPr method has not been used for such a regression task before,the results showed that its performance is the most favorable and practically unrivaled;neither the ANN method nor the other studied ML techniques provide such precise results of the solved regression analysis.

关键词： Machine learning Gaussian process regression artificial neural networks support vector machine hot deformation behavior

Discrete element method simulation of segregation pattern in a sinter cooler charging chute system

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Particuology 2021年第6期19卷 34-42页

作者： Edouard Izard Maxime moreau Pascal ravier Arcelor Mittal Global rfyD Voie RomaineBP3032057283 Maizieres-les-Metz CedexFrance Arcelor Mittal Mediterranee 13776 Fos-sur-MerFrance

This paper presents the simulation of material flows in the large-scale charging chute of Fos-Sur-Mer sinter cooler plant by using three-dimensional Discrete Element Method(DEM).As a result of granular flows in the chute,segregation patterns are formed at the charging *** sinter material is modelled as dry particles and their size distribution in the simulation is larger than in the reality to keep the simulation in a reasonable run *** calibration tests are performed to specify the DEM contact parameters in order to replicate the behavior observed during experiments with the virtual sinter *** DEM model is found to be in good agreement with a segregation measurement.A sensitivity analysis using different particle sizes shows that the segregation patterns are not affected by the different sizes used for fine ***,the filling ratio in the charging system is varied in the model and shows that a high filling ratio leads to less segregation when exiting the charging *** DEM model is used to analyze the granular flows in the charging chute,understand the material behavior and optimize the sinter cooling efficiency.

关键词： Discrete element method Segregation Sinter Industrial application

Emerging potential of progranulin-dependent SorCS2 signaling in healthy and diseased nervous systems

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Neural regeneration research 2025年第9期20卷 2591-2593页

作者： Alena Salasova Anders Nykjær Danish research Institute of Translational Neuroscience DANDrITE-Nordic EMBL Partnership for Molecular Medicine and Centre of Excellence PROMEMODepartment of BiomedicineAarhus UniversityAarhusDenmark

The formation of the mammalian nervous system and its maturation into sensory,motor,cognitive,and behavioral circuits is a complex process that begins during early embryogenesis and lasts until young *** neurodevelopm... 详细信息

关键词： progr jointly CS2

Sexual audience affects male's reproduction investment without consequences on reproductive outputs

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Insect Science 2022年第4期29卷 1170-1180页

作者： Philippe Louâpre Karen Muller Soline Bettencourt-Amarante Denis Thiery Jérôme moreau UMr CNrS 6282 Biogeosciences UniversitéBourgogne Franche-ComtéDijonFrance INrA UMr 1065 Santéet Agroecologie du Vignoble Institut des Science de la Vigne et du VinVillenave d'OrnonCedexFrance INrA UMr 1065 SaveUniversitéde BordeauxBordeaux Sciences AgroVillenave d'OrnonCedexFrance

Males evolved plastic strategies to respond to male-male competition and exhibit adaptive traits and behaviors maximizing their access to the females and limiting sperm *** behaviors allow males to express quick responses to current sexual audience,that is,the number of nearby conspecifics prone to *** contrast,physiological responses are frequently delayed because they are constrained by the time and resources having to be mobilized to produce and export sperm and associated *** is especially critical in species for which males produce *** we investigated in what extend moth males(the tortricid moth Lobesia botrana)producing spermatophores exhibit plastic behavioral and physiological responses to different sexual audiences before and during mating and the consequences for their reproductive *** found that males adjusted their mating behaviors and spermatophore size to a potentially elevated risk of sperm competition perceived before *** addition,males responded to the closed presence of females during mating by reducing their mating ***,the various behavioral and physiological responses we highlighted here were not fully reflected in their reproductive performance as we did not reveal any effect on fecundity and fertility of their *** selective pressure exerted on males experiencing male-male competition could thus be sufficient to trigger adjustment in male mating behaviors but constrains physiological responses according to the perception of competition.

关键词： Lobesia borrund male-male compeition mating behavior sexual conflict sexual scletion sperm competition