Le sommeil d’or (Davy Chou 2011) et L’image manquante (Rithy Panh 2013), deux espaces filmiques de commémoration moyennant l’irrécupérabilité de l’absence

Au cours de ce travail de recherche, nous voudrions montrer comment deux réalisateurs Cambodgiens, appartenant à différentes générations, font le récit du génocide perpétré par les Khmers rouges à travers les différentes formes de pratiques créatrices de deuils qu’ils ont adoptées. Il s’agit d’un deuil personnel chez Rithy Panh et d’un deuil acquis par transmission intergénérationnelle chez Davy Chou. Avec L’image manquante (Rithy Panh 2013), le réalisateur met de l’avant sa mémoire personnelle, mais aussi ses trous de mémoire, pour parler de son traumatisme infantile tout en permettant la reconstruction d’une mémoire collective qui dépasse son propre travail de deuil. Dans Le sommeil d’or (Davy Chou 2011), le jeune réalisateur met en place un dispositif permettant une remémoration communautaire. Plusieurs personnes ayant eu un lien avec l’industrie cinématographique khmère de l’âge d’or témoignent de leurs souvenirs concernant les années 1960 et début 1970. Leurs réminiscences permettent de donner une nouvelle vie aux films disparus tout en insistant sur l’événement qui a entraîné leur destruction. À travers leurs différents dispositifs, les réalisateurs produisent des images des personnes et des objets identitaires qui sont absents tout en évoquant l’événement génocidaire pour en assurer la mémoire et reconstruire l’identité khmère que le régime de Pol Pot avait tenté de détruire. L’analyse des deux films de notre corpus nous permettra de comprendre comment les documentaristes ménagent un espace qui permet au spectateur d’avoir un regard éthique à partir des affects impliqués dans l’expérience des images. La question est de savoir comment parler – faire le récit - d’un événement traumatique où s’articulent le personnel et le politique, afin de pouvoir l’intégrer dans la mémoire collective.In this study, we would like to show how two Cambodian directors, from two different generations, tell the story of the genocide perpetrated by the Khmer rouge through different aesthetics of mourning. Rithy Panh unveils his personal mourning while Davy Chou conveys a mourning that was transmitted to him by his relatives. When it comes to The Missing Picture (Rithy Panh 2013), it is the director’s personal memories (and lack of memories) that allow him to talk about his childhood trauma. This enables the reconstruction of a collective memory that is bigger than his individual mourning. In Golden Slumbers (Davy Chou 2011), the young director’s device entails a collective recollection. Several people, who were related to the film industry during the golden age, share their memories about what happened in the 1960s and beginning of the 1970s. Through their reminiscences, the lost films acquire a new life while the event that brought their destruction is put forward. Both directors produce images of the missing people and cultural objects as they portray the genocide to ensure its memory and to rebuild the khmer identity that Pol Pot’s regime intended to destroy. The purpose of our research is to understand how it is possible to talk about – or to tell the story of – a traumatic event where the intimate and the political spheres are intertwined, in an effort to incorporate it to the present-day collective memory

Nouveautés de la 3e édition anglaise d\u27Unimarc - Diaporama

Diaporama accompagnant la présentation de caroline Demessence, Bibliothèque nationale de France, à propos des grandes nouveautés de la 3e édition anglaise d\u27Unimarc

3e journée d\u27étude du Comité français Unimarc

La 3e Journée d\u27étude du Comité français Unimarc présente les nouveautés des formats pour les notices bibliographiques et d\u27autorité, publiés en 2008 et 2009 respectivement, et aborde les mutations de l\u27environnement normatif dans lequel s\u27inscrit Unimarc. La journée se divise en quatre temps : L\u27activité du CfU, les évolutions d\u27Unimarc, Unimarc dans le contexte normatif international, le catalogage du livre ancien dans Unimarc. Les notices des interventions, en français, proposent à la fois l\u27enregistrement audio et le diaporama accompagnant la communication

Nanoimprinted, Submicrometric, MOF-Based 2D Photonic Structures: Toward Easy Selective Vapors Sensing by a Smartphone Camera

International audience2D photonic metal–oxide-framework-based homo- and hetero-structures are fabricated by soft lithographic approaches. As shown by A. Cattoni, M. Faustini and co-workers, these materials can be used as selective photonic sensing platforms. Detection of toxic vapors such as styrene are performed using an easy transduction method, compatible with smart-phone camera technologies

One-dimensional metal-organic framework photonic crystals used as platforms for vapor sorption.

We present the fabrication of one-dimensional photonic crystals (Bragg stacks) based on a microporous metal–organic framework material and mesoporous titanium dioxide. The Bragg stack heterostructures were obtained using two complementary synthesis approaches utilizing the bottom-up assembly of heterogeneous, i.e. two-component photonic crystal multilayer structures. Zeolitic imidazolate framework ZIF-8 and mesoporous titanium dioxide were chosen as functional components with different refractive indices. While ZIF-8 is intended to impart molecular selectivity, mesoporous TiO2 is used to ensure high refractive index contrast and to guarantee molecular diffusion within the Bragg stack. The combination of micro- and mesoporosity within one scaffold endows the 1D-MOF PC with characteristic adsorption properties upon exposure to various organic vapors. In this context, the sorption behavior of the photonic material was studied as a function of partial pressure of organic vapors. The results show that the multilayered photonic heterostructures are sensitive and selective towards a series of chemically similar solvent vapors. It is thus anticipated that the concept of multilayer heterogeneous photonic structures will provide a versatile platform for future selective, label-free optical sensors

Influence of Terephthalic Acid Substituents on the Catalytic Activity of MIL-101(Cr) in Three Lewis Acid Catalyzed Reactions

[EN] Six isostructural MIL¿101(Cr)¿X (X: H, NO2, SO3H, Cl, CH3, and NH2) materials have been prepared directly by the reaction of CrIII salts and the corresponding terephthalic acid or by postsynthetic treatments of preformed MIL¿101(Cr) following reported procedures. The materials were characterized by using XRD (crystallinity and coincident diffraction pattern), isothermal N2 adsorption (specific surface areas range from 2740¿m2¿g¿1 for MIL¿101(Cr)¿H to 1250¿m2¿g¿1 for MIL¿101(Cr)¿Cl), thermogravimetry (thermal stability up to 400¿°C), and IR spectroscopy (detection of the corresponding substituents), and the results were all in agreement with the reported data for these materials. The MIL¿101(Cr) materials were tested as heterogeneous catalysts for epoxide ring opening by methanol, benzaldehyde acetalization by methanol, and Prins coupling, observing a clear influence of the substituent that in general follows a linear relationship with the Hammett ¿meta constant of the substituent: the catalytic activity increases as the electron¿withdrawing ability of the substituents increases. An up to three orders of magnitude enhancement in the presence of the NO2 substituent was found for some of these reactions. The present study illustrates the versatility that metal¿organic frameworks offer as heterogeneous catalysts that allow the design of actives sites with adequate properties tuned for each reaction.Financial support by the Spanish Ministry of Economy and Competitiveness (Severo Ochoa and CTQ2015-69153 and CTQ2014-53292-R and Generalitat Valenciana (Prometeo 2013/14) is gratefully acknowledged. S.N. is grateful for financial support from the Fundacion Ramon Areces (XVIII Concurso Nacional para la Adjudicacion de Ayudas a la Investigacion en Ciencias de la Vida y de la Materia, 2016).Santiago-Portillo, A.; Navalón Oltra, S.; Concepción Heydorn, P.; Alvaro Rodríguez, MM.; García Gómez, H. (2017). Influence of Terephthalic Acid Substituents on the Catalytic Activity of MIL-101(Cr) in Three Lewis Acid Catalyzed Reactions. ChemCatChem. 9(13):2506-2511. https://doi.org/10.1002/cctc.201700236S2506251191

Does functionalisation enhance CO2 uptake in interpenetrated MOFs? An examination of the IRMOF-9 series

The effect of pore functionalisation (-I, -OH, -OCH3) on a series of topologically equivalent, interpenetrated metal-organic frameworks (MOFs) was assessed by both simulation and experiment. Counter-intuitively, a decreased affinity for CO2 was observed in the functionalised materials, compared to the non-functionalised material. This result highlights the importance of considering the combined effects of network topology and chemical functionality in the design of MOFs for enhanced CO2 adsorptionRavichandar Babarao, Campbell J. Coghlan, Damien Rankine, Witold M. Bloch, Gemma K. Gransbury, Hiroshi Sato, Susumu Kitagawa, Christopher J. Sumby, Matthew R. Hill and Christian J. Doona

Polynuclear complexes as precursor templates for hierarchical microporous graphitic carbon: An unusual approach

YesA highly porous carbon was synthesized using a coordination complex as an unusual precursor. During controlled pyrolysis, a trinuclear copper complex, [CuII3Cl4(H2L)2]·CH3OH, undergoes phase changes with melt and expulsion of different gases to produce a unique morphology of copper-doped carbon which, upon acid treatment, produces highly porous graphitic carbon with a surface area of 857 m2 g–1 and a gravimetric hydrogen uptake of 1.1 wt % at 0.5 bar pressure at 77 K.EPSRC (EP/R01650X/1 for VPT, and EP/E040071/1 for MT) and the University of Bristo

Analysis of high and selective uptake of CO2 in an oxamide-containing {Cu2(OOCR)4}-based metal-organic framework

The porous framework [Cu2(H2O)2L].4H2O.2DMA ((H¬4¬L = oxalylbis(azanediyl)diisophthalic acid; DMA = N,N-dimethylacetamide), denoted NOTT-125, is formed by connection of {Cu2(RCOO)4} paddlewheels with the isophthalate linkers in L4-. A single crystal structure determination reveals that NOTT-125 crystallises in monoclinic cell with a = 27.9161(6) Å, b = 18.6627(4) Å and c = 32.3643(8) Å, space group P2 (1)/c. The structure of this material shows fof topology, which can be viewed as the packing of two types of cages (Cage A and Cage B) in 3-dimensional space. Cage A is constructed by twelve {Cu2(OOCR)4} paddlewheels and six linkers to form an ellipsoid-shaped cavity approximately 24.0 Å along its long axis and 9.6 Å across the central diameter. Cage B consists of six {Cu2(OOCR)4} units and twelve linkers with a spherical diameter of 12.7 Å taking into account the van der Waals radii of the atoms. NOTT-125 incorporates oxamide functionality within the pore walls, and this, combined with high porosity in the desolvated NOTT-125a, is responsible for excellent CO2 uptake (40.1 wt% at 273 K and 1 bar) and selectivity for CO2 over CH4 or N2. Grand canonical Monte Carlo (GCMC) simulations show excellent agreement with the experimental gas isotherm data, and a computational study into the specific interactions and binding energies of both CO2 and CH4 with the linkers in NOTT-125 reveals a set of strong interactions between CO2 and the oxamide motif, which are not possible with a single amide