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Evolutionary and paleobiological implications of Coleoptera (Insecta) from Tethyan-influenced Cretaceous ambers

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Geoscience Frontiers 2016年第4期7卷 695-706页

作者： David Peris Enrico Ruzzier Vincent Perrichot xavier Delclos Departament de Dinamica de la Terra i de l'Ocea and lnstitut de Recerca de la Biodiversitut (IRBio) Facultat de Geologia Universitat de Barcelona Marti i Franques s/n 08071 Barcelona Spain Department of Life Science Natural History Museum Cromwell Rd SW7 5BD London UK UMR CNRS 6118 Geosciences & OSUR Universite de Rennes 1 35042 Rennes cedex France

The intense study of coleopteran inclusions from Spanish （Albian in age） and French （Albian-Santonian in age） Cretaceous ambers, both of Laurasian origin, has revealed that the majority of samples belong to the Polyphaga suborder and, in contrast to the case of the compression fossils, only one family of Archostemata, one of Adephaga, and no Myxophaga suborders are represented. A total of 30 families from Spain and 16 families from France have been identified （with almost twice bioinclusions identified in Spain than in France）; 13 of these families have their most ancient representatives within these ambers. A similar study had previously only been performed on Lebanese ambers （Barremian in age and Gondwanan in origin）, recording 36 coleopteran families. Few lists of taxa were available for Myanmar （Burmese） amber （early Cenomanian in age and Laurasian in origin）. Coleopteran families found in Cretaceous ambers share with their modern relatives mainly saproxylic and detritivorous habits in the larval or adult stages, rather than wood-boring behavior. Fifteen of the coleopteran families occur in both the Lebanese and Spanish ambers; while only five are present in both Spanish and French. Considering the paleogeographic proximity and similarity of age of the Spanish and French ambers, the small number of taxa found in common at both areas is surprising. The ancient origin for the Lebanese and Spanish ambers, the paleogeography （including some barriers for terrestrial biota） and the local paleohabitats are factors that may explain the dissimilarity with the French specimens. Wildfires are believed to be a more likely cause of resin production during the Cretaceous than infestation by beetles. Current knowledge of the beetle species found in the Cretaceous ambers is introduced.

关键词： Beetle Fossil Laurasia Gondwana Resin production

Bioskin: A New Biomaterial for Therapeutical and Biotechnological Purposes

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复旦学报（自然科学版） 2005年第5期44卷 796-797页

作者： xavier-Filho L Laboratório de Produtos Naturais e Biotecnologia Instituto de Tecnologia e Pesquisa-ITP Universidade Tiradentes-UNIT Aracaju Sergipe Brazil

Bioskin is new material by Acetobacter xylinum, Saccharomyces cerevisae and Schyzosaccharomyces pombe in mixed culture on sucrose. The Material has been revealed as hypoaller- genic,antibiotic,antithermic and sedative. It is widely used for skin regeneration in therapy of burns as well as in odontological *** contains high amounts of D-glucosamine and N-acetyl-D-glucosamine. It does not produce ash after heating at 600 ℃ and its combustion heat is similar to that of several current woods, such as pine oak or maple Bioskin has been used to immobilize algal cells, fungal spores and Bacteria in order to study some metabolic events. In addition, immobilization, of several enzymes has been performed using bioskin as inert *** was immobilized at pH 7.0 by ionic adsorption (aminosugars provide a net positive charge neutral pH values) whereas several glycoproteins can be immobilized on bioskin by an affinity mechanism.

关键词：生物素生物材料微生物酵母生物聚合体

A Construction of Beam Propagation Methods for Optical Waveguides

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Communications in Computational Physics 2009年第8期6卷 565-576页

作者： xavier Antoine Pierre Dreyfuss Karim Ramdani Institut Elie Cartan Nancy Nancy-UniversiteCNRSINRIACORIDA TeamBoulevard des Aiguillettes B.P.239 F-54506 Vandoeuvre-les-NancyFrance Laboratoire J.A.Dieudonne(Mathematiques) Universite de Nice-Parc Valrose06000 NiceFrance INRIA CORIDA Teamand Institut Elie Cartan NancyNancy-UniversiteCNRSINRIABoulevard des Aiguillettes B.P.239 F-54506 Vandoeuvre-les-NancyFrance

This paper presents a systematic method to derive Beam Propagation Models for optical *** technique is based on the use of the symbolic calculus rules for pseudodifferential *** cases of straight and bent optical wave... 详细信息

关键词： Bent waveguides Beam Propagation Method optics

Cleaning of Marine Sediment Samples for Large Diatom Stable Isotope Analysis

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Journal of Earth Science 2012年第2期23卷 161-172页

作者：熊志方李铁刚 xavier Crosta Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of Sciences UMR-CNRS 5805 EPOC UniversitéBordeaux 1Avenue des Facultés

Diatom stable isotope analysis offers considerable potential in palaeoceanography, par-ticularly where carbonate material is scarce or absent. However, extracting pure diatom frustules free of external labile organic matter from marine sediments is an essential requirement for their applica-tions as paleoenvironmental proxies. Here, based largely on previous work, we developed a method in-cluding physical separation and chemical oxidation steps to concentrate and clean pure large diatoms from laminated diatom mat and diatomaceous clay sediment samples for their stable isotope analysis. Using the physical separation techniques consisting of the removal of carbonate and excess organic matter, sieving, differential settling, and heavy liquid floatation, pure diatoms can be successfully iso-lated from the sediment samples with opal concentration more than 10%. Subsequent time oxidation experiment shows that labile organic matter coating pure diatom valves can be effectively removed with 30% H2O2 at 65 ℃ for 2 h. Measurements of δ13C after every step of physical separation demonstrate that contaminants and lost diatoms can influence the original diatom stable isotope signal, highlighting the importance of a visual check for dominant diatom size in the initial sample and purity in the final sample. Although the protocol described here was only applied to diatom mats or diatom oozes con-taining large diatoms （Ethmodiscus rex）, we believe that this method can be adapted to common dia-toms of general marine sediment samples.

关键词： large diatom stable isotope physical separation chemical oxidation Parece Vela basin palaeoceanography.

G protein-coupled receptor 37(GPR37) emerges as an important modulator of adenosinergic transmission in the striatum

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Neural Regeneration Research 2019年第11期14卷 1912-1914页

作者： xavier Morato Rodrigo A. Cunha Francisco Ciruela Unitat de Farmacologia Departament Patologia i Terapeutica ExperimentalFacultat de MedicinaInstituto de Investigacion Biomedica de Bellvitge (IDIBELL)Universitat de BarcelonaL’Hospitalet de LlobregatBarcelonaSpainInstitut de NeurocienciesUniversitat de BarcelonaBarcelonaSpain (Morato X Ciruela F) Center for Neuroscience and Cell Biology (CNC)-Center for Neurosciences and Cell BiologyUniversity of CoimbraCoimbraPortugalFaculty of MedicineUniversity of CoimbraCoimbraPortugal

G protein-coupled receptor 37 (GPR37), also known as parkin associated endothelin-like (Pael) receptor, is an orphan G protein- coupled receptor, which suffers a defective parking ubiquitination in autosomal recessive Parkinson’s disease promoting its endoplasmic reticulum aggregation and stress, neurotoxicity and neuronal death (Takahashi and Imai, 2003). Interestingly, we have demonstrated previously that GPR37 heteromerizes with adenosine A2A receptor (A2AR) in the striatum (Morato et al., 2017;Sokolina et al., 2017).

关键词： G protein-coupled receptor 37(GPR37) important modulator adenosinergic transmission

Evaluation of left atrial remodelling following percutaneous left atrial appendage closure

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Journal of Geriatric Cardiology 2017年第8期14卷 496-500页

作者： Zakaria Jalal xavier Iriart Marie-Lou Dinet Olivier Comeloup xavier Pillois Hubert Cochet Jean-Benoit Thambo Department of Paediatric and Adult Congenital Cardiology Bordeaux University Hospital Pessac France Electrophysiology and Heart Modeling Institute IHU Lirye Fondation Bordeaux UniversitO Pessac-Bordeaux France Centre de recherche Cardio-Thoracique de Bordeaux INSERM Bordeaux France Department of Radiology Bordeaux University Hospital Pessac France

Atrial fibrillation prevalence is increasing with age, reaching up to 5% of patients older than 65 years, and is associated with 20%-30% of stroke episodes in that population.

关键词： Atrial fibrillation Left atrial appendage Left atrial remodeling Percutaneous closure

Verapamil and vasospastic angina： underuse in the elderly population

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Journal of Geriatric Cardiology 2017年第7期14卷 430-435页

作者： xavier Humbert Vincent Roule Paul Milliez Joachim Alexandre Department of General Medicine Medical School Caen France Department of Pharmacology CHU de Caen Caen France Normandie University UNICAEN CHU Caen Signalisation eleetrophysiologie et imagerie des lesions d'ischOmie-reperfusion myocardique Caen France Department of Cardiology CHU de Caen Caen France

The first case of Prinzmetal angina was described in 1959 by Prinzmetal, et al. Since this description, several triggering factors have been associated with vasospastic angina （VA） and included： illicit drugs such as cocaine, amphetamine or marijuana, but also bitter-orange, alcohol, butane, chemotherapy drugs, over-the-counter medication and different antibiotics. Smoking is also a major risk factor for developing VA.t21 Thus, except for smoking, many of conventional atherosclerosis risk factors do not appear to be applicable to VA.t21 However, vasospastic angina can also occur without any triggering factor.

关键词： Calcium antagonists Elderly population Prinzmetal angina Variant angina Verapamil

Analysis of a Prototypical Multiscale Method Coupling Atomistic and Continuum Mechanics:the Convex Case

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Acta Mathematicae Applicatae Sinica 2007年第2期23卷 209-216页

作者： xavier Blanc Claude Le Bris FrédéricLegoll Laboratoire J.L.-Lions Université Pierre et Marie CurieBoite courrier 187F-75252 ParisFrance CERMICS Ecole Nationale des Ponts et Chaussées 6 et 8 avenue Blaise PascalCité DescartesF-77455 Marne-la-Vallée and MICMACInria RocquencourtF-78153 Le ChesnayFrance CERMICS Ecole Nationale des Ponts et Chaussées 6 et 8 avenue Blaise PascalCité DescartesF-77455 Marne-la-Vallée and MICMACInria RocquencourtF-78153 Le ChesnayFrance EDF R & D1 avenue du Général de GaulleF-92140 ClamartFrance

In order to describe a solid which deforms smoothly in some region, but non smoothly in some other region, many multiscale methods have been recently proposed that aim at coupling an atomistic model （discrete mechanics） with a macroscopic model （continuum mechanics）. We provide here a theoretical basis for such a coupling in a one-dimensional setting, in the case of convex energy.

关键词： Multiscale methods variational problems continuum mechanics discrete mechanics

Raised into Ruins： Transforming Debris in Contemporary Photography from China

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Frontiers of Literary Studies in China-Selected Publications from Chinese Universities 2017年第2期11卷 263-297页

作者： xavier Ortells-Nicolau Department of Modern Languages and Literatures and English Studies Universitat deBarcelona Facultat de Filologia Gran Via de les Corts Catalanes 585 Barcelona 08007Spain

At the turn of the twenty-first century, contemporary art from China has displayed a recurrent engagement with urban ruins. Painting, performance, film, and photography have turned the rubble of demolition and construction works, an outcome of the vast urban development programs of the past few decades, into a powerful symbol of China＇s contemporary milieu. Critical and academic approaches to contemporary Chinese art have rightly inquired about the meaning of these ruins, in a process that has also reevaluated the place of these images in the representational traditions of China. Starting with these academic perspectives, this paper situates images of ruination in contemporary Chinese art in dialogue with transnational debates on the meaning and epistemology of the ruin, to argue for an essential element of constructedness in the representations of ruins. Photographic series by Wang Qingsong, Jiang Pengyi, and Yang Yongliang are analyzed as examples of an active appropriation of the process of ruin creation from a critical stance. Recycling urban wasteful rubble into an aesthetic object, these photo artists generate alternative visions of urban development and its consequent demolition and contribute to the negotiation of the meaning of the ruin.

关键词： contemporary photography constructedness ruins JiangPengyi Wang Qingsong Yang Yongliang