Institution
University of Lorraine
Education•Nancy, France•
About: University of Lorraine is a education organization based out in Nancy, France. It is known for research contribution in the topics: Population & Nonlinear system. The organization has 11942 authors who have published 25010 publications receiving 425227 citations. The organization is also known as: Lorraine University.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper, the authors investigated the necessary condition for the observation of all-optical helicity-dependent switching (AO-HDS) of magnetization in thin films, and they showed that both ferro-and ferrimagnets with high saturation magnetization show HDS if their magnetic thickness is strongly reduced below a material-dependent threshold thickness.
Abstract: To understand the necessary condition for the observation of all-optical helicity-dependent switching (AO-HDS) of magnetization in thin films, we investigated ferromagnetic Co/Pt and Co/Ni multilayers as well as ferrimagnetic TbCo alloys as a function of magnetic layer compositions and thicknesses. We show that both ferro-and ferrimagnets with high saturation magnetization show AO-HDS if their magnetic thickness is strongly reduced below a material-dependent threshold thickness. By taking into account the demagnetizing energy and the domain wall energy, we are able to define a criterion to predict whether AO-HDS or thermal demagnetization (TD) will be observed. This criterion for the observation of AO-HDS is that the equilibrium size of magnetic domains forming during the cooling process should be larger than the laser spot size. From these results we anticipate that more magnetic materials are expected to show AO-HDS. However, the effect of the optical pulses' helicity is hidden by the formation of small magnetic domains during the cooling process.
81 citations
••
TL;DR: In this paper, tannin-based meringues were derived from natural precursors and used to produce solid foams with a broad range of bulk densities and cell sizes.
81 citations
••
TL;DR: Robust H∞ control design for uncertain discrete-time singular systems including uncertainties on matrix E is proposed and LMI design conditions are proposed.
Abstract: This note deals with the robust H∞ control design for uncertain discrete-time singular systems. Necessary and sufficient conditions for the admissibility for these systems are formulated in strict linear matrix inequalities (LMIs) formulation. Then both state feedback and static output feedback controllers are studied and robust necessary and sufficient design conditions are expressed in terms of strict bilinear matrix inequalities (BMIs). Robust H∞ controllers are designed for uncertain singular systems including uncertainties on matrix E. LMI design conditions are also proposed. An illustrative example is provided to show the effectiveness of the proposed approach.
81 citations
••
TL;DR: It is suggested that competition occurs between genets and basic information on T. melanosporum propagation patterns that are relevant for the management of productive truffle orchards is provided.
Abstract: The genetic structure of ectomycorrhizal (ECM) fungal populations results from both vegetative and sexual propagation. In this study, we have analysed the spatial genetic structure of Tuber melanosporum populations, a heterothallic ascomycete that produces edible fruit bodies. Ectomycorrhizas from oaks and hazels from two orchards were mapped and genotyped using simple sequence repeat markers and the mating type locus. The distribution of the two T. melanosporum mating types was also monitored in the soil. In one orchard, the genetic profiles of the ascocarps were compared with those of the underlying mycorrhizas. A pronounced spatial genetic structure was found. The maximum genet sizes were 2.35 and 4.70 m in the two orchards, with most manifesting a size < 1 m. Few genets persisted throughout two seasons. A nonrandom distribution pattern of the T. melanosporum was observed, resulting in field patches colonized by genets that shared the same mating types. Our findings suggest that competition occurs between genets and provide basic information on T. melanosporum propagation patterns that are relevant for the management of productive truffle orchards.
81 citations
••
Languedoc-Roussillon Universities1, French Institute of Health and Medical Research2, University College London3, NHS England4, University of Oulu5, University of Helsinki6, Centre national de la recherche scientifique7, Seconda Università degli Studi di Napoli8, University of Cambridge9, Medical University of Warsaw10, University of Lorraine11, University of Bristol12, University of Salerno13, Humboldt University of Berlin14, Paris Descartes University15, Maastricht University16, University of Southampton17, Odense University18, Utrecht University19, University of Kiel20, University of Coimbra21, Karolinska Institutet22, University Medical Center Groningen23, Polytechnic University of Valencia24
TL;DR: The current paper describes the rationale and the process by which the aims of the meeting will be reached and an operational definition of Active and Healthy Ageing including tools that may be used for this are proposed.
Abstract: Health is a multi-dimensional concept, capturing how people feel and function. The broad concept of Active and Healthy Ageing was proposed by the World Health Organisation (WHO) as the process of optimizing opportunities for health to enhance quality of life as people age. It applies to both individuals and population groups. A universal Active and Healthy Ageing definition is not available and it may differ depending on the purpose of the definition and/or the questions raised. While the European Innovation Partnership on Active and Healthy Ageing (EIP on AHA) has had a major impact, a definition of Active and Healthy Ageing is urgently needed. A meeting was organised in Montpellier, France, October 20-21, 2014 as the annual conference of the EIP on AHA Reference Site MACVIA-LR (Contre les Maladies Chroniques pour un Vieillissement Actif en Languedoc Roussillon) to propose an operational definition of Active and Healthy Ageing including tools that may be used for this. The current paper describes the rationale and the process by which the aims of the meeting will be reached.
81 citations
Authors
Showing all 12161 results
Name | H-index | Papers | Citations |
---|---|---|---|
Jonathan I. Epstein | 138 | 1121 | 80975 |
Peter Tugwell | 129 | 948 | 125480 |
David Brown | 105 | 1257 | 46827 |
Faiez Zannad | 103 | 839 | 90737 |
Sabu Thomas | 102 | 1554 | 51366 |
Francis Martin | 98 | 733 | 43991 |
João F. Mano | 97 | 822 | 36401 |
Jonathan A. Epstein | 94 | 299 | 27492 |
Muhammad Imran | 94 | 3053 | 51728 |
Laurent Peyrin-Biroulet | 90 | 901 | 34120 |
Athanase Benetos | 83 | 391 | 31718 |
Michel Marre | 82 | 444 | 39052 |
Bruno Rossion | 80 | 337 | 21902 |
Lyn March | 78 | 367 | 62536 |
Alan J. M. Baker | 76 | 234 | 26080 |