Relevant bibliographies by topics / Gorge annulaire

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Gorge annulaire'

Author: Grafiati
Published: 7 July 2024
Last updated: 31 July 2025

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Journal articles on the topic "Gorge annulaire"

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Dong, Lin, Shuhai Xiao, Bing Shen, Chuanming Zhou, Guoxiang Li, and Jinxian Yao. "Basal Cambrian microfossils from the Yangtze Gorges area (South China) and the Aksu area (Tarim block, northwestern China)." Journal of Paleontology 83, no. 1 (2009): 30–44. http://dx.doi.org/10.1017/s0022336000058108.

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The basal Cambrian marks the beginning of an important chapter in the history of life. However, most paleontological work on the basal Cambrian has been focused on skeletal animal fossils, and our knowledge about the primary producers—cyanobacteria and eukaryotic phytoplankton (e.g., acritarchs)—is limited. In this research, we have investigated basal Cambrian acritarchs, coccoidal microfossils, and cyanobacteria preserved in phosphorites and cherts of the Yanjiahe Formation in the Yangtze Gorges area (South China) and the Yurtus Formation in the Aksu area (Tarim Block, northwestern China). Ou
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Abe, Kohei, Kohei Kawazoe, Manabu Yamasaki, Kunihiko Yoshino, and Hiroyasu Misumi. "New Flexible Internal Annular Fixation Rings for Tricuspid Aortic Valves." Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery 14, no. 1 (2019): 60–65. http://dx.doi.org/10.1177/1556984519828018.

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Objectives Although aortic annulus repair has a long history, there are still no ideal devices to control an aortic annulus. We have developed a new method involving the use of an expanded polytetrafluoroethylene graft with the support of a metallic ring holder during implantation from inside an aorta, with no dissection of the surrounding aortic annulus. Methods We used aortic annular rings of 18 to 24 mm made of Gore-Tex tubed grafts (W.L. Gore & Associates, Flagstaff, AZ, USA) and metallic ring holder. After cutting the graft circumferentially to a 5-mm thickness, it was compressed manu
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Calzolari, Gabriele, Alexis K. Ault, Greg Hirth, and Robert G. McDermott. "Hematite (U-Th)/He thermochronometry detects asperity flash heating during laboratory earthquakes." Geology 48, no. 5 (2020): 514–18. http://dx.doi.org/10.1130/g46965.1.

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Abstract Evidence for coseismic temperature rise that induces dynamic weakening is challenging to directly observe and quantify in natural and experimental fault rocks. Hematite (U-Th)/He (hematite He) thermochronometry may serve as a fault-slip thermometer, sensitive to transient high temperatures associated with earthquakes. We test this hypothesis with hematite deformation experiments at seismic slip rates, using a rotary-shear geometry with an annular ring of silicon carbide (SiC) sliding against a specular hematite slab. Hematite is characterized before and after sliding via textural and
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Mikus, E., S. Calvi, M. Fiorentino, et al. "P47 MITRAL VALVE RE–REPAIR THROUGH A RIGHT MINITHORACOTOMY." European Heart Journal Supplements 25, Supplement_D (2023): D58. http://dx.doi.org/10.1093/eurheartjsupp/suad111.133.

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Abstract Objective Recurrent mitral valve regurgitation after prior repair is usually treated with re–repair or replacement through a median sternotomy. We report our small initial experience with mitral valve re–repair through a repeated minimally invasive approach. Methods From July 2018 to November 2021, 10 patients (median age 52 years IQR 49–68; male 90%) underwent isolated mitral valve re–repair with a right mini–thoracotomy approach with peripheral arterial and venous cannulation. Median Euroscore II was 2.05 (IQR 2.03–2.54). Results The median time from the original operation to redo s
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Iverson, Neal R., Thomas S. Hooyer, and Roger Leb Hooke. "A laboratory study of sediment deformation: stress heterogeneity and grain-size evolution." Annals of Glaciology 22 (1996): 167–75. http://dx.doi.org/10.3189/1996aog22-1-167-175.

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In shearing sediment beneath glaciers, networks of grains may transiently support shear and normal stresses that are larger than spatial averages. Consistent with studies of fault-gouge genesis, we hypothesize that crushing of grains in such networks is responsible for surrounding larger grains with smaller grains. At sufficiently large strains, this should minimize stress heterogeneity, favor intergranular sliding and abrasion rather than crushing, and result in a self-similar grain-size distribution.This hypothesis is tested with a ring-shear device that slowly shears a large annular sedimen
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Iverson, Neal R., Thomas S. Hooyer, and Roger Leb Hooke. "A laboratory study of sediment deformation: stress heterogeneity and grain-size evolution." Annals of Glaciology 22 (1996): 167–75. http://dx.doi.org/10.1017/s0260305500015378.

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In shearing sediment beneath glaciers, networks of grains may transiently support shear and normal stresses that are larger than spatial averages. Consistent with studies of fault-gouge genesis, we hypothesize that crushing of grains in such networks is responsible for surrounding larger grains with smaller grains. At sufficiently large strains, this should minimize stress heterogeneity, favor intergranular sliding and abrasion rather than crushing, and result in a self-similar grain-size distribution.This hypothesis is tested with a ring-shear device that slowly shears a large annular sedimen
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7

"Totally 3-dimensional endoscopic ventricular septal defect closure and aortic valve replacement via a periareolar incision." Multimedia Manual of Cardio-Thoracic Surgery, March 10, 2025. https://doi.org/10.1510/mmcts.2025.012.

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There are no prior reports of totally endoscopic minimally invasive cardiac surgery for combined ventricular septal defect closure and aortic valve replacement. We utilized a periareolar incision as the main access, inserting a cardioplegia line, vent tube and the aortic cross-clamp entirely through this incision. Only three ports (main incision, camera port and left-hand port) were used. A three-dimensional endoscope facilitated precise techniques. The type I ventricular septal defect was approached and closed from the aortic side using a Gore-Tex patch, with mattress sutures for the lower ed
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Dissertations / Theses on the topic "Gorge annulaire"

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Le, Mentec Guichon Ronan. "Caractérisation et Optimisation d'assemblages sertis hydrauliquement." Electronic Thesis or Diss., Ecole centrale de Nantes, 2023. http://www.theses.fr/2023ECDN0044.

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Le sertissage de tubes représente un enjeu important en ingénierie car c’est un besoin récurrent dans presque toutes les industries ayant besoin de solidariser des pièces tubulaires entre elles. On retrouve notamment ces assemblages dans l’industrie navale de défense pour la propulsion des bâtiments de surface ou des sous-marins. Au fil des années, de nombreux chercheurs se sont intéressés aux liaisons serties avec pour but de déterminer les paramètres procédé, géométriques et matériaux prépondérants en vue de les dimensionner de façon optimale. Afin d’augmenter leur résistance, ils ont essayé
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Messen, Younès Hamza. "Phénomène de nucléation des séismes : Approche expérimentale par le cisaillement d'une farine de faille modèle." Phd thesis, Ecole des Ponts ParisTech, 2010. http://pastel.archives-ouvertes.fr/pastel-00555067.

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Pour caractériser certains comportements des gouges de failles, des travaux à l'Appareil de Cisaillement Simple Annulaire ont été réalisés. Ils consistent à cisailler un modèle de gouge épaisse sur des distances plurimétriques. La diminution progressive, à grand déplacement, du frottement apparent est représentée par une nouvelle loi puissance qui prend en compte le niveau de confinement et dans laquelle l'effet de l'eau est négligeable. Les perturbations en déplacement, en dessous d'un certain seuil, en vue de relâcher le cisaillement, induisent une cicatrisation lors de la recharge où l'on a
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3

Chambon, Guillaume. "Caractérisation expérimentale du frottement effectif des zones de faille." Phd thesis, Université Paris Sud - Paris XI, 2003. http://tel.archives-ouvertes.fr/tel-00006613.

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Nous présentons une série de résultats expérimentaux visant à modéliser le comportement mécanique d'une zone de faille. Nous avons utilisé un appareil de cisaillement simple annulaire permettant d'appliquer des cisaillements plurimétriques à des échantillons épais de gouge granulaire (sable de quartz). Nos résultats mettent en évidence un nouveau processus spectaculaire d'adoucissement en glissement: le coefficient de frottement effectif de la gouge décroît de 70% sur des distances caractéristiques décimétriques. La diminution progressive du frottement avec le glissement est bien représentée p
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