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Nickel phosphonate MOF as efficient water splitting photocatalyst

Nano Research 2021年第2期14卷 450-457页

作者： Pablo Salcedo-Abraira Sergio M.F.Vilela Artem A.Babaryk Maria Cabrero-Antonino Pedro Gregorio fabrice Salles Sergio Navalon Hermenegildo Garcia Patricia Horcajada IMDEA Energy Advanced Porous Materials Unit(APMU)Avda.Ramon de Ia Sagra 3E 28935 MostolesMadridSpain Deparrtamento de Quimica Inorginica I.Fac.CC.Quimicas Universidad Complutense de MadridAvda.Complutense s/n28040 MadridSpain Departamento de Quimica and Instituto de Tecnologia Quimica(CSIC-UPV) Universitat Politecnica de ValenciaC/Camino de Veras/n46022 ValenciaSpain Institut Charles Gerhardt Montpellier UMR 5253 CNRS UM ENSCMUniversite MontpellierPlace E.Bataillon34095 Montpellier Cedex 05France

A novel microporous two-dimensional(2D)Ni-based phosphonate metal-organic framework(MOF;denoted as IEF-13)has been successfully synthesized by a simple and green hydrothermal method and fully characterized using a combination of experimental and computational *** resolution by single-crystal X-ray diffraction reveals that IEF-13 crystallizes in the triclinic space group Pi having bi-octahedra nickel nodes and a photo/electroactive tritopic phosphonate ***,this material exhibits coordinatively unsaturated nickel(II)sites,free-P0_(3)H_(2)and-P0_(3)H acidic groups,a C0_(2)accessible microporosity,and an exceptional thermal and chemical ***,its in-deep optoelectronic characterization evidences a photoresponse suitable for *** this sense,the photocatalytic activity for challenging H_(2)generation and overall water splitting in absence of any co-catalyst using UV-Vis irradiation and simulated sunlight has been evaluated,constituting the first report for a phosphonate-MOF ***-13 is able to produce up to 2,200 fimol of H_(2)per gram using methanol as sacrificial agent,exhibiting stability,maintaining its crystal structure and allowing its *** more,170μmol of H_(2)per gram were produced using IEF-13 as photocatalyst in the absence of any co-catalyst for the overall water splitting,being this reaction limited by the 0_(2)*** present work opens new avenues for further optimization of the photocatalytic activity in this type of multifunctional materials.

关键词： metal-organic framework phosphonates photocatalysis water splitting

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硅光电倍增器的变温伏安特性及水汽凝结对伏安特性的影响

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半导体光电 2018年第3期39卷 337-340页

作者：张国青 fabrice RETIERE 西安工程大学理学院物理系西安710048 加拿大粒子加速器中心(TRIUMF) 温哥华V6T2A32

为了研究硅光电倍增器(SiPM)在低温下能否正常工作,选取了两种典型的SiPM,通过液氮制冷方式,对SiPM在不同温度下的反向伏安特性进行了研究。结果显示,不同SiPM的过偏压范围(V_B^V_b)随温度的变化差别很大,并且微量水蒸气凝结仅对未封装... 详细信息

为了研究硅光电倍增器(SiPM)在低温下能否正常工作,选取了两种典型的SiPM,通过液氮制冷方式,对SiPM在不同温度下的反向伏安特性进行了研究。结果显示,不同SiPM的过偏压范围(V_B^V_b)随温度的变化差别很大,并且微量水蒸气凝结仅对未封装的SiPM伏安特性的V_b^V_B段有明显影响。分析实验结果得出,SiPM正常工作电压的范围在很大程度上受到衬底材料中缺陷和陷阱浓度的影响。在低温下工作的SiPM,要求其衬底材料中缺陷和陷阱的浓度更低。在进行SiPM的低温应用和测量时,应密切监视偏压加在V_b^V_B区间时,器件的电流是否有变化,而不能只观察击穿之前SiPM的漏电情况。

关键词：硅光电倍增器多像素光子计数器伏安特性水汽凝结

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Neck-MRI experience for investigation of survived strangulation victims

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Forensic Sciences Research 2020年第2期5卷 113-118页

作者： Christine Bruguier Pia Genet Jean-Baptiste Zerlauth fabrice Dedouit Jochen Grimm Reto Meuli Tony Fracasso Silke Grabherr University Center of Legal Medicine Lausanne–Geneva University Hospital LausanneLausanneSwitzerland Department of Diagnostic and Interventional Radiology University Hospital LausanneLausanneSwitzerland Clinique Cecile LausanneSwitzerland

For the medicolegal evaluation of victims of survived strangulation,a neck-magnetic resonance imaging(MRI)can be performed for assessing lesions in the inner soft tissues(fat,muscles or lymph nodes,for example).In our institute,such MRI examinations have been performed for a test period of 4 years with the aim of evaluating the use of this tool by forensic pathologists and identifying medicolegal indicators for the performance of neck-MRI in surviving victims of *** retrospectively reviewed medicolegal reports from all victims examined during the test *** extracted objective lesions(***,bruising and abrasions)and reported clinical symptoms(*** disorder,dysphasia)from the *** findings were compared to those reported from the *** total,112 victims were clinically examined after suspected *** of these victims underwent an MRI examination of the ***-four of the victims presented objective lesions during the clinical examination,with eight showing signs of both petechiae and ***-MRI was performed in four of these eight victims and three of them showed lesions visible in *** 76 victims with bruising as the only objective finding,66 victims described clinical *** those 66 victims,seven were examined by MRI and two demonstrated lesions in *** MRI was performed,relevant findings were detected in 45%of the *** leads to the suspicion that many more findings could have been detected in the other victims,if an MRI had been performed in those *** results lead us to the conclusion that an MRI examination of victims of suspected strangulation is useful,and strict indications for its application should be established.

关键词： Forensic sciences forensic pathology neck-MRI radiological findings medicolegal evaluation strangulation survivors

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Effects of Soursop flowers(Annona muricata L.)extract on chemical changes of refined palm olein stored at frying temperature

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Food Science and Human Wellness 2017年第4期6卷 187-194页

作者： Tonfack Djikeng fabrice Womeni Hilaire Macaire Bala Krishna Marrapu Mallampalli Sri Lakshmi Karuna Rachapudi Badari Narayana Prasad Linder Michel School of Agriculture and Natural Resources Catholic University Institute of BueaP.O BOX 563BueaCameroon Department of Biochemistry Faculty of ScienceUniversity of DschangP.O BOX 67DschangCameroon CSIR-Indian Institute of Chemical Technology Centre for Lipid ResearchTarnakaHyderabad 500007India Biomolecular Engineering Laboratory(LIBio) University of LorraineENSAIAVandoeuvre-les-NancyFrance

In this study,the antioxidant activity of soursop flowers extract in delaying palm olein oxidation at frying temperature was *** oil was supplemented with the extract at concentrations 200–1800 ppm,and stored in the oven at 180◦C for 6 days(4 h heating per day).Palm olein containing butylated hydroxytoluene(BHT)served as positive control while the same oil without antioxidant(Control)served as negative one,in order to monitor changes in *** each two heating days,oil samples were collected,and their chemical indexes were ***,para-anisidine,TOTOX,thiobarbituric acid and iodine values were the parameters ***,the evolution of the fatty acid composition of each oil sample during the storage was assessed by gas-chromatography using a flame ionization detector(GC/FID).Generally,palm olein samples containing the natural extract have exhibited the lowest rate of oxidation,and were efficient in limiting the destruction of unsaturated fatty acids in oil at frying *** order of effectiveness in inhibiting oil oxidation was the following:PO+AnM1800ppm>PO+AnM1400ppm>PO+AnM1000ppm>PO+An.M600ppm>PO+An.M200ppm>PO+BHT200ppm=*** these results,it can be concluded that soursop flowers are a potent sources of natural antioxidants for stabilization of palm olein.

关键词： Soursop flowers Stabilization Natural antioxidant Palm olein Frying Oxidative stability

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Size fractions of organic matter pools influence their stability: Application of the Rock-Eval® analysis to beech forest soils

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Pedosphere 2022年第4期32卷 565-575页

作者： David SEBAG Eric P.VERRECCHIA Thierry ADATTE Michael AUBERT Guillaume CAILLEAU Thibaud DECAENS Isabelle KOWALEWSKI Jean TRAP fabrice BUREAU Mickael HEDDE Normandie Univ Universitéde Rouen Normandie(UNIROUEN)Centre National de la Recherche Scientifique(CNRS)M2CRouen 76000France Institute of Earth Surface Dynamics(IDYST) GeopolisUniversity of LausanneLausanne 1015Switzerland Institut Français du Pétrole Energies Nouvelles(IFPEN) Earth Sciences and Environmental Technologies DivisionRueil-Malmaison 92852France Institute of Earth Sciences(ISTE) GeopolisUniversity of LausanneLausanne 1015Switzerland Normandie Univ Universitéde Rouen Normandie(UNIROUEN)Institut National de Recherche pour l'Agriculturel'Alimentation et l'Environnement(INRAE)LaboratoireÉtude et COmpréhension de la bioDIVersité(ECODIV)Rouen 76000France Laboratory of Microbiology Institute of BiologyUniversity of NeuchâtelNeuchâtel 2000Switzerland Centre d'Ecologie Fonctionnelle et Evolutive(CEFE) Universitéde MontpellierCNRSEcole Pratique des Hautes Etudes(EPHE)Institut de Recherche pour le Développement(IRD)Montpellier 34000France Eco&Sols INRAEIRDUniversitéde MontpellierMontpellier 34000France

Soil organic matter (SOM) is a complex heterogeneous mixture formed through decomposition and organo-mineral interactions, and characterization of its composition and biogeochemical stability is challenging. From this perspective, Rock-Eval® is a rapid and efficient thermal analytical method that combines the quantitative and qualitative information of SOM, including several parameters related to thermal stability. This approach has already been used to monitor changes in organic matter (OM) properties at the landscape, cropland, and soil profile scales. This study was aimed to assess the stability of SOM pools by characterizing the grain size fractions from forest litters and topsoils using Rock-Eval® thermal analysis. Litter (organic) and topsoil samples were collected from a beech forest in Normandy (France), whose management in the last 200 years has been documented. Fractionation by wet sieving was used to separate large debris (> 2 000 μm) and coarse (200–2 000 μm) and fine particulate OM (POM) (50–200 μm) in the organic samples as well as coarse (200–2 000 μm), medium (50–200 μm), and fine (< 50 μm) fractions of the topsoil samples. Rock-Eval® was able to provide thermal parameters sensitive enough to study fine-scale soil processes. In the organic layers, quantitative and qualitative changes were explained by the progressive decomposition of labile organic compounds from plant debris to the finest organic particles. Meanwhile, the grain size fractions of topsoils presented different characteristics. The coarse organo-mineral fractions showed higher C contents, albeit with a different composition, higher thermal stability, and greater decomposition degree than the plant debris forming the organic layer. These results are consistent with those of previous studies that microbial activity is more effective in this fraction. The finest fractions of topsoils showed low C contents, the highest thermal stability, and low decomposition degree, which can be explained

关键词： aggregate decomposition litter organo-mineral interaction plant-microbe-soil continuum soil organic matter thermal analysis topsoil

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Experimental evidence for ovarian hypofunction in sparrow hybrids

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Chinese Birds 2016年第1期7卷 79-83页

作者： fabrice Eroukhmanoff Melissah Rowe Emily R.A.Cramer Fredrik Haas Jo S.Hermansen Anna Runemark Arild Johnsen Glenn-Peter Saetre Department of Biosciences Center for Ecological and Evolutionary SynthesisUniversity of Oslo Natural History Museum University of Oslo Department of Biology Ecology BuildingLund University

Background: Postzygotic isolation in the form of reduced viability and/or fertility of hybrids may help maintain species boundaries in the face of interspecific gene flow. Past hybridization events between house sparrows(Passer domesticus) and Spanish sparrows(P. hispaniolensis) have given rise to a homoploid hybrid species, the Italian sparrow(P. italiae). Although genetic incompatibilities are known to isolate these three species, the biological consequences of these incompatibilities are still unknown in early generation ***: We investigated whether F1 hybrids between house and Spanish sparrows experience reduced viability or fertility. More specifically, we generated hybrids through controlled crosses in aviaries, and compared ovaries of female hybrids with female of pure?species ***: We found that overall, hybrid ovaries were underdeveloped and that half of all female hybrids exhibited symptoms of ovarian hypofunction(ovarian atrophy and complete absence of developed follicles).Conclusions: Fertility in hybrids is a common consequence or post?zygotic barriers between species. We discuss these results in light of previous findings on genetic incompatibilities between the parent species and the potential role of incompatibilities in hybrid speciation, a rare evolutionary process in birds.

关键词： Hybrid fitness Hybridization Ovary Sparrows Speciation

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CT-scan vs.3D surface scanning of a skull:first considerations regarding reproducibility issues

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Forensic Sciences Research 2017年第2期2卷 93-99页

作者： Stella Fahrni Lorenzo Campana Alejandro Dominguez Tanya Uldin fabrice Dedouit Olivier Deleemont Silke Grabherr School of Criminal Justice University of LausanneLausanne-DorignySwitzerland Department of Forensic Imaging University Centre for Legal Medicine Lausanne-GenevaLausanneSwitzerland Department of Technological Radiology Health School of Sciences Vaud-HESAVLausanneSwitzerland

Three-dimensional surface scanning(3DSS)and multi-detector computed tomography(MDCT)are two techniques that are used in legal medicine for digitalizing objects,a body or body parts such as *** these techniques are more and more commonly employed,surprisingly little information is known about the quality rendering of digitalized three-dimensional(3D)models provided by each of *** paper presents findings related to the measurement precision of 3D models obtained through observation of a study case,where a fractured skull reconstructed by an anthropologist was digitalized using both post-mortem imaging *** tomography(CT)scans were performed using an 8-row MDCT unit with two different slice *** variability of 3D CT models superimposition allowed to assess the reproducibility and robustness of this digitalization ***,two 3D surface scans were done using a professional high resolution 3D *** comparison of 3D CT-scans with 3D surface scans by superimposition demonstrated several regions with significant differences in topology(average difference between+1.45 and-1.22 mm).When comparing the reproducibility between these two digitalizing techniques,it appeared that MDCT 3D models led in general to greater variability for measurement precision between scanned ***,the reproducibility was better achieved with the 3D surface digitizer,showing 3D models with fewer and less pronounced differences(from+0.32 to-0.31 mm).These experiments suggest that MDCT provides less reproducible body models than 3D surface *** further studies must be undertaken in order to corroborate this first impression,and possibly explain the reason for these findings.

关键词： Forensic imaging multi-detector computed tomography(MDCT) 3D surface scanning anthropology

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Direct measurement of electrocaloric effect in P(VDF-TrFE-CFE)film using infrared imaging

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Journal of Materiomics 2023年第2期9卷 256-260页

作者： Ashwath Aravindhan Pierre Lheritier Alvar Torello Uros Prah Youri Nouchokgwe Asmaa El Moul Xavier Chevalier fabrice Domingues Dos Santos Emmanuel Defay Veronika Kovacova Materials Research and Technology Department Luxembourg Institute of Science and Technology(LIST)41 Rue du BrillL-4422BelvauxLuxembourg University of Luxembourg 2 Avenue de l’UniversiteEsch-sur-AlzetteL-4365Luxembourg Arkema e Piezotech CRRA Rue Henri Moissan69493Pierre Benite CedexFrance

Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)P(VDF-TrFE-CFE)is a relaxor ferroelectric polymer,which exhibits a temperature-independent electrocaloric effect at room *** this work,the electrocaloric effect in P(VDF-TrFE-CFE)film was directly analysed using infrared imaging.P(VDF-TrFE-CFE)64.8%/27.4%/7.8%(in mole)film of(15±1)mm thickness was deposited on polyethylene naphthalate *** ECE of P(VDF-TrFE-CFE)film was measured from 15 to 35C at different electric fields.A maximum adiabatic temperature change(DTad)of 3.58 K was measured during the cooling cycle at a field of 100 V/mm at 30*** element analysis of temperature dissipation through the sample estimated that the actual temperature change within P(VDF-TrFE-CFE)film was 4.3 *** the thermal mass of the substrate,a substantial ECE was observed in P(VDF-TrFE-CFE)*** electrocaloric terpolymer composition could be of interest for electrocaloric cooling applications.

关键词： Direct measurement Electrocaloric effect P(VDF-TrFE-CFE) Relaxor ferroelectric polymer Infrared imaging Finite element analysis

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Pressure and Temperature Conditions Recorded by the Beni-Bousera Ultramafic Body and the Overlying Lower-crustal Rocks(Rif,Morocco)

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地学前缘 2009年第S1期16卷 203-204页

作者： El Atrassi Fatima fabrice Brunet Vincent Bonneau Christian Chopin Mohamed Bouybaouene Gilles Chazot Laurent Jolivet Laboratoire de Geologie ENS-CNRS UMR-8538Paris(France)Departement des Sciences de la Terre Faculte des Sciences BP 1014 Laboratoire de Geologie Département des Sciences de la Terre Faculté des Sciences BP 1014 UMR-6538 Domaines OcéaniquesUniversité de Bretagne Occidentale Laboratoire de Tectonique

The Beni Bousera massif(Rifean belt,northern Morocco)is predominantly composed of spinel lherzolite with subordinate garnet pyroxenite and garnet peridotite *** formed an antiformal dome which was overlain by graphite-sillimanite-garnet gneisses(kinzigites)equilibrated at around 1 GPa and 750℃.Within these kinzigites,kyanite-bearing basic granulites record somewhat higher PT conditions of around 1.6-2.0 GPa and 760-820℃.Garnet clinopyroxenite(either graphite-bearing or graphi-

关键词： garnet exsolution periodotite pyrox-enite UHP conditions Beni Bousera Rif

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地铁联络通道冻结法施工冻胀融沉机理研究

地铁联络通道冻结法施工冻胀融沉机理研究

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作者： Nsoro fabrice 浙江科技学院

学位级别：硕士

人工冻土技术是一种经过验证的土壤改良方法,用于在困难的土地或环境条件下建造井、隧道和许多其他土木结构。定量地介绍了隧道建设项目人工冻土应用监测的机理和并分析其结果。本文考虑了与细粒土壤沉降有关的解冻过程,描述了人工冷冻... 详细信息

人工冻土技术是一种经过验证的土壤改良方法,用于在困难的土地或环境条件下建造井、隧道和许多其他土木结构。定量地介绍了隧道建设项目人工冻土应用监测的机理和并分析其结果。本文考虑了与细粒土壤沉降有关的解冻过程,描述了人工冷冻和解冻过程,确定了与自然冻土的不同以及其相似性。它还描述了在人工冷冻结构的冻结和解冻过程中,不同的土壤和岩石参数如何影响变形和压力。以上描述主要基于文献研究和案例研究.第一个案例研究基于中国浙江省杭州市滨江区江油路站地铁双隧道的建设,该隧道土壤质地柔软,渗漏流量显著。本研究的重点是真实模拟冷冻体生长阶段的总体情况。第二例研究基于杭州市轨道交通5号线16号线标准江南大道站-江洪路西站1号线地铁某站的站台隧道,目的是通过回传分析并确定缺失但相关的材料参数,并将机制预测与现场测算结果进行比较。由于未能形成完全封闭的冰冻体,施工被大大推迟。通过现场监测,基于JOBFEM进行耦合分析,将会帮助我们了解到冻土的机械完整性,同时我们将会对其进行简短的介绍。

关键词：软土人工冻土隧道机理数值模拟

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