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1,151 results on '"Mariette, C"'

2. Strain Wave Pathway to Semiconductor-to-Metal Transition revealed by time resolved X-ray powder diffraction

Author

Mariette, C., Lorenc, M., Cailleau, H., Collet, E., Guérin, L., Volte, A., Trzop, E., Bertoni, R., Dong, X., Lépine, B., Hernandez, O, Janod, E., Cario, L., Phuoc, V. Ta, Ohkoshi, S., Tokoro, H., Patthey, L., Babic, A., Usov, I., Ozerov, D., Sala, L., Ebner, S., Böhler, P., Keller, A, Oggenfuss, A., Zmofing, T., Redford, S., Vetter, S., Follath, R., Juranic, P., Schreiber, A., Beaud, P., Esposito, V., Deng, Y, Ingold, G., Chergui, M., Mancini, G. F., Mankowsky, R., Svetina, C., Zerdane, S., Mozzanica, A., Wulff, M., Levantino, M., Lemke, H., and Cammarata, M.

Subjects
Condensed Matter - Materials Science, Physics - Applied Physics
Abstract

Thanks to the remarkable developments of ultrafast science, one of today's challenges is to modify material state by controlling with a light pulse the coherent motions that connect two different phases. Here we show how strain waves, launched by electronic and structural precursor phenomena, determine a macroscopic transformation pathway for the semiconducting-to-metal transition with large volume change in bistable Ti$_3$O$_5$ nanocrystals. Femtosecond powder X-ray diffraction allowed us to quantify the structural deformations associated with the photoinduced phase transition on relevant time scales. We monitored the early intra-cell distortions around absorbing metal dimers, but also long range crystalline deformations dynamically governed by acoustic waves launched at the laser-exposed Ti$_3$O$_5$ surface. We rationalize these observations with a simplified elastic model, demonstrating that a macroscopic transformation occurs concomitantly with the propagating acoustic wavefront on the picosecond timescale, several decades earlier than the subsequent thermal processes governed by heat diffusion., Comment: 30 pages (including supplementary text), 5 main figures, 9 supplementary figures; corrected author list

Published
2020
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5. A Grid-Based Approximation Algorithm for the Minimum Weight Triangulation Problem

Author

Raghvendra, Sharath and Wessels, Mariëtte C.

Subjects
Computer Science - Computational Geometry
Abstract

Given a set of $n$ points on a plane, in the Minimum Weight Triangulation problem, we wish to find a triangulation that minimizes the sum of Euclidean length of its edges. This incredibly challenging problem has been studied for more than four decades and has been only recently shown to be NP-Hard. In this paper we present a novel polynomial-time algorithm that computes a $14$-approximation of the minimum weight triangulation -- a constant that is significantly smaller than what has been previously known. In our algorithm, we use grids to partition the edges into levels where shorter edges appear at smaller levels and edges with similar lengths appear at the same level. We then triangulate the point set incrementally by introducing edges in increasing order of their levels. We introduce the edges of any level $i+1$ in two steps. In the first step, we add edges using a variant of the well-known ring heuristic to generate a partial triangulation $\hat{\mathcal{A}}_i$. In the second step, we greedily add non-intersecting level $i+1$ edges to $\hat{\mathcal{A}}_i$ in increasing order of their length and obtain a partial triangulation $\mathcal{A}_{ i+1}$. The ring heuristic is known to yield only an $O(\log n)$-approximation even for a convex polygon and the greedy heuristic achieves only a $\Theta(\sqrt{n})$-approximation. Therefore, it is surprising that their combination leads to an improved approximation ratio of $14$. For the proof, we identify several useful properties of $\hat{\mathcal{A}}_i$ and combine it with a new Euler characteristic based technique to show that $\hat{\mathcal{A}}_i$ has more edges than $\mathcal{T}_i$; here $\mathcal{T}_i$ is the partial triangulation consisting of level $\le i$ edges of some minimum weight triangulation. We then use a simple greedy stays ahead proof strategy to bound the approximation ratio.

Published
2017

6. Development of a laser-driven shock compression platform for time-resolved XRD experiments at the ID09 beamline of the European Synchrotron Radiation Facility.

Author

Sollier, A., Pépin, C. M., Kozhaev, M. A., Mariette, C., Reichenbach, W., and Levantino, M.

Subjects
MATERIALS science, SYNCHROTRON radiation, X-ray lasers, DYNAMIC pressure, X-ray diffraction, SHOCK waves
Abstract

We present a newly developed laser-driven shock compression platform at the ID09 beamline of the European Synchrotron Radiation Facility (ESRF). This platform combines a custom high-power EKSPLA laser with ESRF's high-energy X-ray pulses to perform in situ, time-resolved X-ray diffraction (XRD) measurements in materials under well characterized, moderate pressure (up to 1 Mbar) and short-duration shock waves. Its purpose is to serve as a shock driver to study materials under dynamic pressure, focusing on phase transitions in condensed matter. We provide a detailed description of this platform's design and functionalities, along with preliminary experimental results obtained from iron and tin samples subjected to shock compression. These results not only demonstrate the platform's ability to acquire high-quality X-ray diffraction data but also highlight its potential for advancing research in material science and high-energy-density physics. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Functional outcomes in symptomatic versus asymptomatic patients undergoing incisional hernia repair: Replacing one problem with another? A prospective cohort study in 1312 patients

Author

Abet, E., Ain, J.-F., Arnalsteen, L., Baraket, O., Beck, M., Bellouard, A., Benizri, E., Berney, C., Bilem, D., Binot, D., Blanc, B., Blazquez, D., Bonan, A., Boukortt, T., Brehant, O., Cas, O., Champault-Fezais, A., Chau, A., Chollet, J.-M., Constantin, M., Cossa, J.-P., Dabrowski, A., David, A., Demaret, S., Dubuisson, V., Dugue, T., El Nakadi, I., Faure, J.-P., Frileux, P., Fromont, G., Gadiri, N., Gillion, J.-F., Glehen, O., Hennequin, S., Isambert, M., Jurczak, F., Khalil, H., Lamblin, A., Largenton, C., Lavy, M., Lepère, M., Le Toux, N., Magne, E., Manfredelli, S., Mariette, C., Marion, Y., Mercoli, H.-A., Mesli Smain, N., Moszkowicz, D., Najim, M., Oberlin, O., Odet, E., Ortega Deballon, P., Pavis d’Escurac, X., Pichot Delahaye, V., Putinier, J.B., Regimbeau, J.M., Renard, Y., Romain, B., Rouquie, D., Soler, M., Soufron, J., Roos, S., Thillois, J.-M., Tiry, P., Vauchaussade De Chaumont, A., Vinatier, E., Vu, P., Verhaeghe, R., Zaranis, C., Zeineb, M., de Smet, Gijs H.J., Sneiders, Dimitri, Yurtkap, Yagmur, Menon, Anand G., Jeekel, Johannes, Kleinrensink, Gert-Jan, Lange, Johan F., and Gillion, Jean-François

Published
2020
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10. Strain wave pathway to semiconductor-to-metal transition revealed by time-resolved X-ray powder diffraction

Author

Mariette, C., Lorenc, M., Cailleau, H., Collet, E., Guérin, L., Volte, A., Trzop, E., Bertoni, R., Dong, X., Lépine, B., Hernandez, O., Janod, E., Cario, L., Ta Phuoc, V., Ohkoshi, S., Tokoro, H., Patthey, L., Babic, A., Usov, I., Ozerov, D., Sala, L., Ebner, S., Böhler, P., Keller, A., Oggenfuss, A., Zmofing, T., Redford, S., Vetter, S., Follath, R., Juranic, P., Schreiber, A., Beaud, P., Esposito, V., Deng, Y., Ingold, G., Chergui, M., Mancini, G. F., Mankowsky, R., Svetina, C., Zerdane, S., Mozzanica, A., Bosak, A., Wulff, M., Levantino, M., Lemke, H., and Cammarata, M.

Published
2021
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11. Quench cooling under reduced gravity

Author

Chatain, D., Mariette, C., Nikolayev, V. S., and Beysens, D.

Subjects
Physics - Fluid Dynamics
Abstract

We report the quench cooling experiments performed with liquid O2 under different levels of gravity simulated with the magnetic gravity compensation. A copper disk is quenched from 270K to 90K. It is found that the cooling time in microgravity is very long in comparison with any other gravity level. This phenomenon is explained by the isolation effect of the gas surrounding the disk. The liquid subcooling is shown to drastically improuve the heat exchange thus reducing the cooling time (about 20 times). The effect of subcooling on the heat transfer is analyzed at different gravity levels. It is shown that such type of experiments cannot be used for the analysis of the critical heat flux (CHF) of the boiling crisis. The minimum heat flux (MHF) of boiling is analyzed instead.

Published
2013
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16. Neoadjuvant chemotherapy followed by chemoradiation and surgery with and without cetuximab in patients with resectable esophageal cancer: a randomized, open-label, phase III trial (SAKK 75/08)

Author

Ruhstaller, T., Thuss-Patience, P., Hayoz, S., Schacher, S., Knorrenschild, J.R., Schnider, A., Plasswilm, L., Budach, W., Eisterer, W., Hawle, H., Mariette, C., Hess, V., Mingrone, W., Montemurro, M., Girschikofsky, M., Schmidt, S.C., Bitzer, M., Bedenne, L., Brauchli, P., and Stahl, M.

Published
2018
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20. Isolated cerebellar metastasis from urothelial carcinoma:A case report of a rare phenomenon

Author

Verheijen, Eduard J. A., Taal, Walter, Tewari, Rishi D. S. Nandoe, Giessen, Mariette C. A., Roshani, Hossain, Verheijen, Eduard J. A., Taal, Walter, Tewari, Rishi D. S. Nandoe, Giessen, Mariette C. A., and Roshani, Hossain

Abstract

Introduction: Although urothelial carcinoma (UC) generally is non-invasive, contrastingly in 25% of patients UC metastasizes. Isolated central nervous system (CNS) metastasis from UC without other distant metastases are considered rare. In this report we describe a patient with an isolated and solitary cerebellar metastasis from UC. Research question: In this case report we explore the value of histological analysis of CNS metastases, imaging, treatment options and survival. Material and methods: A rare case is presented of a patient diagnosed with an isolated CNS metastasis originating from UC. Through a systematic review of literature route of dissemination, current imaging and treatment options, and survival are discussed. Results: A 77-year-old male was diagnosed with a pT2N0M0 high-grade UC and treated with transurethral resection and chemoradiation therapy. Several months later, the patient presented with neurological symptoms, and radiological imaging revealed a solitary cerebellar mass. A body CT scan showed no other metastasis. After surgical resection, histology confirmed urothelial origin of the mass, matching his primary UC and the patient received post-operative stereotactic radiotherapy at the surgical site. Recurrence of the cerebellar mass occurred after 6 months for which the patient received re-resection. The patient died 5.5 months after re-resection. Discussion and conclusion: Isolated brain metastases without other distant metastases from UC are rare, so histologic confirmation of the brain metastasis is essential, particularly when the time interval between diagnosis of the UC and brain metastasis increases. Early brain CT is not recommended. PET CT may have additional value in detection of other distant metastases from UC. Despite advancements in treatments, prognosis for CNS metastasis from UC remains poor.

Published
2023

21. Diffuse malignant peritoneal mesothelioma: Evaluation of systemic chemotherapy with comprehensive treatment through the RENAPE Database: Multi-Institutional Retrospective Study

Author

Averous, G., Bereder, J.M., Bibeau, F., Bouzard, D., Chevallier, A., Croce, S., Dartigues, P., Durand-Fontanier, S., Gouthi, L., Heyd, B., Kaci, R., Kianmanesh, R., Laverrière, M.H., Leblanc, E., Lelong, B., Leroux, A., Loi, V., Mariette, C., Meeus, P., Msika, S., Pezet, D., Peyrat, P., Pirro, N., Paineau, J., Poizat, F., Porcheron, J., Quenet, F., Rat, P., Regimbeau, J.M., Thibaudeau, E., Tuech, J.J., Valmary-Degano, S., Verriele, V., Zerbib, P., Zinzindohoue, F., Kepenekian, V., Elias, D., Passot, G., Mery, E., Goere, D., Delroeux, D., Ferron, G., Guilloit, J.M., Pocard, M., Abboud, K., Arvieux, C., Brigand, C., Marchal, F., Classe, J.M., Lorimier, G., De Chaisemartin, C., Guyon, F., Mariani, P., Ortega-Deballon, P., Isaac, S., Maurice, C., Gilly, F.N., and Glehen, O.

Published
2016
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37. Practice patterns in complex ventral hernia repair and place of biological grafts: A national survey among French digestive academic surgeons

Author

Mariette, C., Wind, P., Micelli Lupinacci, R., Tresallet, C., Adham, M., Arvieux, C., Benoist, S., Berdah, S., Berger, A., Briez, N., Brigand, C., Caiazzo, R., Carrere, N., Casa, C., Collet, D., Deguelte, S., Dousset, B., Dubuisson, V., Glehen, O., Gineste, J.-C., Hamy, A., Lacaine, F., Laurent, C., Lehur, P.-A., Mabrut, J.-Y., Mathieu, P., Mathonnet, M., Meunier, B., Michot, F., Ouaissi, M., Palot, J.-P., Parc, Y., Pattou, F., Paye, F., Pezet, D., Piessen, G., Pocard, M., Regenet, N., Regimbeau, J.-M., Sabbagh, C., Zerbib, P., and Toussaint, J.-M.

Published
2014
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38. Pratiques et place des prothèses biologiques dans la prise en charge des éventrations complexes de la paroi abdominale : résultats d’une enquête nationale chez les chirurgiens digestifs universitaires français

Author

Mariette, C., Wind, P., Micelli Lupinacci, R., Tresallet, C., Adham, M., Arvieux, C., Benoist, S., Berdah, S., Berger, A., Briez, N., Brigand, C., Caiazzo, R., Carrere, N., Casa, C., Collet, D., Deguelte, S., Dousset, B., Dubuisson, V., Glehen, O., Gineste, J.-C., Hamy, A., Lacaine, F., Laurent, C., Lehur, P.-A., Mabrut, J.-Y., Mathieu, P., Mathonnet, M., Meunier, B., Michot, F., Ouaissi, M., Palot, J.-P., Parc, Y., Pattou, F., Paye, F., Pezet, D., Piessen, G., Pocard, M., Regenet, N., Regimbeau, J.-M., Sabbagh, C., Zerbib, P., and Toussaint, J.-M.

Published
2014
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39. Normative Changes in Ethnic and American Identities and Links with Adjustment among Asian American Adolescents

Author

Kiang, Lisa, Witkow, Melissa R., and Champagne, Mariette C.

Abstract

Identity development is a highly salient task for adolescents, especially those from immigrant backgrounds, yet longitudinal research that tracks simultaneous change in ethnic identity and American identity over time has been limited. With a focus on 177 Asian American adolescents recruited from an emerging immigrant community, in the current study, we used hierarchical linear modeling and found that ethnic identity tends to remain fairly stable across the 4 years of high school, whereas American identity increases over time. When ethnic identity and American identity were examined simultaneously, consistent with existing research, ethnic identity was positively associated with positive relationships, high self-esteem, academic motivation, and lower levels of depression over time. Although American identity was not significantly associated with depression, positive links with relationships, self-esteem, and academic motivation were found. Both identities were interactively associated with academic motivation. Acculturative implications and the importance of considering the dual construction of ethnic identity and American identity in light of adolescent adjustment are discussed.

Published
2013
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42. P929: IXAZOMIB AND DARATUMUMAB WITHOUT DEXAMETHASONE (I-DARA) IN ELDERLY FRAIL RELAPSING MYELOMA (RRMM) PATIENTS: RESULTS OF THE PHASE 2 STUDY IFM 2018-02 OF THE INTERGROUPE FRANCOPHONE DU MYELOME (IFM).

Author

Macro, M., primary, Touzeau, C., additional, Mariette, C., additional, Manier, S., additional, Brechignac, S., additional, Vincent, L., additional, Hebraud, B., additional, Decaux, O., additional, Schulmann, S., additional, Lenoir, C., additional, Godmer, P., additional, Farge, A., additional, Peyro Saint Paul, L., additional, Parienti, J.-J., additional, and Leleu, X., additional

Published
2022
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43. P891: IXAZOMIB, POMALIDOMIDE AND DEXAMETHASONE (IXPD) IN RELAPSED OR REFRACTORY MULTIPLE MYELOMA (RRMM) CHARACTERIZED WITH HIGH-RISK CYTOGENETICS. IFM 2014-01

Author

Bobin, A., primary, Manier, S., additional, De Keizer, J., additional, Karlin, L., additional, Perrot, A., additional, Hulin, C., additional, Caillot, D., additional, Mariette, C., additional, Lenain, P., additional, Richez, V., additional, Tiab, M., additional, Touzeau, C., additional, Jaccard, A., additional, Decaux, O., additional, Araujo, C., additional, Belhadj, K., additional, Benboubker, L., additional, Déal, C., additional, Macro, M., additional, Vincent, L., additional, Arnulf, B., additional, Bareau, B., additional, Braun, T., additional, Calmettes, C., additional, mamoun, D., additional, Zerazhi, H., additional, Demarquette, H., additional, Feugier, P., additional, Fohrer-sonntag, C., additional, Godet, S., additional, Petillon, M.-O., additional, Avet-Loiseau, H., additional, and Leleu, X., additional

Published
2022
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