Littérature scientifique sur le sujet « Arch. evolution »

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Articles de revues sur le sujet "Arch. evolution"

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Du, Xiao Li, Hong Wei Song, and Jie Chen. "Laws of Formation and Evolution of Pressure Arch in Coal Mining Adjoining Rock." Advanced Materials Research 243-249 (May 2011): 2596–600. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.2596.

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Based on numerical simulation of computing Software ANSYS, the curve of arching coefficient variation of pressure arch due to actual mining was analyzed aiming to a special mining face, the law of stress transfer and change in surrounding rock was discussed, and the evolving features and characteristics of pressure arch was obtained. The analysis and discussion show the following facts: Arch body will become thicker and stress in the arch body increases with working face’s driving distance increasing; the morphology of pressure arch transits from ellipsoid with long axis in the vertical direct
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Wang, S. R., X. G. Wu, Y. H. Zhao, P. Hagan, and C. Cao. "Evolution Characteristics of Composite Pressure-Arch in Thin Bedrock of Overlying Strata During Shallow Coal Mining." International Journal of Applied Mechanics 11, no. 03 (2019): 1950030. http://dx.doi.org/10.1142/s1758825119500303.

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Under the shallow coal mining condition and based on the cracking and movement rules of the roof in different mining stages, the mechanical models of symmetrical pressure-arch, stepped pressure-arch, rotating-squeezed pressure-arch in the mining field were established. Then, the instability criterion of each pressure-arch structure was derived. Through the similarity material experiment and numerical simulation, the evolution characteristics of the composite pressure-arches in the near- and far-field were revealed. Results show that the stepped pressure-arch in broken blocks of the basic roof
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Rusu, Ligia, Mihnea Ion Marin, Michi Mihail Geambesa, and Mihai Robert Rusu. "Monitoring the Role of Physical Activity in Children with Flat Feet by Assessing Subtalar Flexibility and Plantar Arch Index." Children 9, no. 3 (2022): 427. http://dx.doi.org/10.3390/children9030427.

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Flat foot is a common pediatric foot deformity which involves subtalar flexibility; it can affect the plantar arch. This study analyzes the evolution of two parameters, i.e., plantar index arch and subtalar flexibility, before and after physiotherapy and orthoses interventions, and examines the correlation between these two parameters. Methods: The study included 30 participants (17 boys, 12 girls, average age 9.37 ± 1.42 years) with bilateral flat foot. We made two groups, each with 15 subjects. Assessments of the subtalar flexibility and plantar arch index used RSScan the platform, and were
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Tian, Zhongchu, Yue Cai, Hongtao Shi, et al. "Simulation of Test Arch Based on Concrete Damage Plasticity Model and Damage Evolution Analysis." Applied Sciences 13, no. 20 (2023): 11239. http://dx.doi.org/10.3390/app132011239.

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In light of the limited research on latent damages during the construction of large-span suspension arches, this study introduced a method to simulate structural damage utilizing random porosity. Initially, based on data from real-world engineering projects, the most susceptible areas within the arch structure were pinpointed. Subsequently, multiple test arch simulation models were constructed. Employing Python, commands for random porosity were implemented within ABAQUS and distinct mesh modules were devised to depict structures under varying degrees of damage. The current investigation delve
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Barske, Lindsey, Peter Fabian, Christine Hirschberger, et al. "Evolution of vertebrate gill covers via shifts in an ancient Pou3f3 enhancer." Proceedings of the National Academy of Sciences 117, no. 40 (2020): 24876–84. http://dx.doi.org/10.1073/pnas.2011531117.

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Whereas the gill chambers of jawless vertebrates open directly into the environment, jawed vertebrates evolved skeletal appendages that drive oxygenated water unidirectionally over the gills. A major anatomical difference between the two jawed vertebrate lineages is the presence of a single large gill cover in bony fishes versus separate covers for each gill chamber in cartilaginous fishes. Here, we find that these divergent patterns correlate with the pharyngeal arch expression of Pou3f3 orthologs. We identify a deeply conserved Pou3f3 arch enhancer present in humans through sharks but undete
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González Manrique, S. J., C. Kuckein, M. Collados, et al. "Temporal evolution of arch filaments as seen in He I 10 830 Å." Astronomy & Astrophysics 617 (September 2018): A55. http://dx.doi.org/10.1051/0004-6361/201832684.

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Aims. We study the evolution of an arch filament system (AFS) and of its individual arch filaments to learn about the processes occurring in them. Methods. We observed the AFS at the GREGOR solar telescope on Tenerife at high cadence with the very fast spectroscopic mode of the GREGOR Infrared Spectrograph (GRIS) in the He I 10 830 Å spectral range. The He I triplet profiles were fitted with analytic functions to infer line-of-sight (LOS) velocities to follow plasma motions within the AFS. Results. We tracked the temporal evolution of an individual arch filament over its entire lifetime, as se
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Wang, Shuren, Xiaogang Wu, Yanhai Zhao, and Paul Hagan. "Mechanical Performances of Pressure Arch in Thick Bedrock during Shallow Coal Mining." Geofluids 2018 (October 1, 2018): 1–13. http://dx.doi.org/10.1155/2018/2419659.

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Due to the periodicity of mine pressure, it can easily lead to a wide-range damage of the overburden rock under shallow coal mining conditions, and the falling of the overburden rock is usually a serious threat to the mining safety. Based on the monitoring data of mine pressure in a typical shallow coal mine in northern China, the mechanical model of the surrounding rock in the mining field was built and the identification indicators of the pressure arch after coal mining was defined. Then, the arching mechanism, the stress distribution characteristics in different positions, and the bearing c
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Melovitz-Vasan, Cheryl, Susan Huff, and Nagaswami Vasan. "Complex and multiple anomalies of the aortic arch: Atypical origin of the vertebral artery of continuing interest among embryologists, anatomists, and clinicians." Italian Journal of Anatomy and Embryology 128, no. 2 (2024): 23–29. https://doi.org/10.36253/ijae-15440.

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Aortic arch branching anomalies are a relatively rare occurrence, observed in approximately 3-5% of cadavers. These anomalous branching patterns continue to be a topic of ongoing dialogue in embryological evolution and cervical region surgery. During dissection, it was discovered that the donor’s left vertebral artery arose from the aortic arch between the left common carotid and subclavian arteries. In an earlier report that is included here, the right vertebral artery arose directly from the aortic arch (authors and journal expressed permission and attribution: Vasan et al., 2022). This pape
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Wang, Feng, Tong Chen, Bo Ma, and Denghong Chen. "Formation mechanism of stress arch during longwall mining based on key strata theory." Energy Exploration & Exploitation 40, no. 2 (2021): 816–33. http://dx.doi.org/10.1177/01445987211042701.

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The traditional stress arch hypothesis during longwall mining fails to elucidate the formation mechanism of stress arch, and the morphological characteristics and evolution of stress arch are indefinite. To solve these problems, a mechanical model was established for elucidating the formation mechanism of stress arch in overlaying strata. The influencing of key strata on the morphological characteristics of the stress arch was studied. Finally, the evolution of the stress arch during longwall mining was studied through numerical simulation. The results show that the bearing structure of the ov
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Tian, Zhongchu, Ye Dai, Tao Peng, Zujun Zhang, Yue Cai, and Binlin Xu. "Laminated Steel Fiber-Reinforced Concrete Hingeless Arch: Research on Damage Evolution Laws." Applied Sciences 14, no. 12 (2024): 5015. http://dx.doi.org/10.3390/app14125015.

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In the context of reinforced concrete (RC) arch bridges, while the incorporation of full sections of steel fibers can enhance the bridge’s toughness, cracking resilience, and bearing capacity, achieving an optimal balance between structural performance and economic viability in this manner remains challenging. This article introduces a novel computational approach—the distributed steel fiber concrete (LSFRC) arch—which considers the spatial distribution of damage in RC arches. The static performance of SFRC elements and LSFRC beams was compared and analyzed using the concrete plastic damage mo
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Thèses sur le sujet "Arch. evolution"

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Al-Kindi, Mohammed. "Structural evolution and fracture pattern of Salakh Arch." Thesis, University of Leeds, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434242.

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Williams, Devin N. "The Association of Size Variation in the Dental Arch to Third Molar Agenesis for a Modern Population." Scholar Commons, 2018. http://scholarcommons.usf.edu/etd/7247.

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The frequency with which individuals do not develop their third molars, or wisdom teeth, is increasing worldwide. This current topic of human evolution is relevant to the research of anthropologists, geneticists, dentists, and other researchers involved in the study of human dentition. Many explanations have been offered to account for the prevalence of molar agenesis including, evolutionary, environmental, and genetic theories. The purpose of this research project is to determine the frequency of third molar agenesis and investigate the relationship between third molar agenesis and maxilloman
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PIGAZZINI, ILARIA. "Evaluating and Detecting Architecture Erosion." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/365009.

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Un'architettura software è erosa (o degradata) se mostra una progressiva perdita di integrità strutturale a causa di violazioni dei principi di progettazione. I sistemi erosi soffrono di Architectural Technical Debt (ATD), lo sforzo aggiuntivo richiesto agli sviluppatori per gestire i difetti causati dall'erosione. Un sintomo dell'accumulo di ATD è la presenza di Architectural Smells (AS), decisioni di software design che hanno un impatto negativo sulla qualità interna del sistema software. I sistemi affetti da AS soffrono di maggiori costi di manutenzione e sono più difficili da evolvere. Que
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Talbot, Jared Coffin 1982. "Patterning and Stabilizing the Zebrafish Pharyngeal Arch Intermediate Domain." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/11982.

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xv, 76 p. : ill. (some col.) Includes 4 video files.<br>Improved understanding of pharyngeal arch (PA) patterning and morphogenesis can reveal critical insights into the origins of craniofacial diseases, such as Fraser syndrome. PAs contain mesenchymal condensations, which give rise to most of the facial skeleton in vertebrates. Studies of Endothelin1 signaling reveal that the skeleton derived from the first two PAs are patterned into dorsal, intermediate, and ventral domains. Previous work has indicated that endothelin targets, including the Dlx genes, homeotically pattern dorsal versus ventr
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Morris, Aisha R. "Emplacement of deep submarine lava flows on the North Hawaiian Arch: a study of thermal and rheological evolution using a numerical model." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/6982.

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Edwards, Caroline Marion Hawkey. "A comparison of arc evolution on continental and oceanic crust, Sunda Arc, Indonesia." Thesis, Royal Holloway, University of London, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361452.

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Kadarusman. "Rainbowfishes from west Papua (Melanotaeniidae) : evolution and systematics." Toulouse 3, 2012. http://www.theses.fr/2012TOU30079.

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Située au Nord de l'Australie, la Nouvelle Guinée se caractérise par des reliefs montagneux très développés et demeure l'une des dernières régions inexplorées de la planète. Des processus complexes de géodynamique couplés a son isolement géographique ont contribué à la mise en place d'un panel complexe d'écosystèmes et à l'évolution d'une biodiversité exceptionnelle. Cette particularité vaut également pour la diversité de sa faune ichtyologique. Les poissons arc-en-ciel (Melanotaeniidae) constituent avec les Eleotridae et les Gobiidae, les 3 familles de poissons les plus diversifiées des eaux
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Bignold, Stella Mary. "The initiation and magmatic evolution of a juvenile island arc : the Kohistan arc, Pakistan Himalaya." Thesis, Kingston University, 2001. http://eprints.kingston.ac.uk/20671/.

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The Kohistan arc, situated in the northwestern Himalaya of North Pakistan, is a Cretaceous intra-oceanic island arc which was erected during subduction of the Tethys Ocean consequent on the northward flight of India. Following accretion to the Asian margin, the arc behaved as an Andean-type continental arc prior to the collision of India with the Asian continent, which uplifted the arc and tilted it, thus providing a unique opportunity to study a complete succession of rocks from the very earliest stages of arc evolution. A combination of fieldwork, geochemical and radiogenic isotope analysis,
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Noury, Mélanie. "Evolution géologique de l'avant-arc sud péruvien : apports des données géo-thermochronologiques." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENU058/document.

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La marge sud péruvienne est située au niveau d’une zone majeure de subduction océan continent depuis au moins le Paleozoique inférieur. C’est dans ce cadre que s’est formé l’un des plus importants orogènes du monde : les Andes Centrales. En effet, l’épaisseur crustale y est &gt;60 km et ce sur une importante surface. Cependant, on considère actuellement que ce surrépaississement a été acquis incrémentalement seulement depuis ~30 Ma. Dans le but de comprendre comment et quand ce surrépaississement est apparu, la majeure partie des études précédentes s’est focalisée sur l’évolution de l’arc magm
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Hollis, Steven Philip. "Evolution and mineralization of volcanic arc sequences : Tyrone Igneous Complex, Northern Ireland." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/359062/.

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The Tyrone Igneous Complex of Northern Ireland forms an integral part of the Grampian-Taconic orogen, linking the well documented sectors of Scotland, western Ireland and Newfoundland. The orogen records the accretion of a series of peri-Laurentian affinity arcs, ophiolites and microcontinental blocks to the Laurentian margin between the Late Cambrian and Middle Ordovician. The Tyrone Igneous Complex is broadly divisible into two distinct units: the c. 484-480 Ma ophiolitic Tyrone Plutonic Group and the structurally overlying c. 475-469 Ma arc-related Tyrone Volcanic Group. Both were intruded
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Livres sur le sujet "Arch. evolution"

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Greiling, Reinhard, and Helga De Wall. Magmatic evolution of a neoproterozoic island-arc: Syn- to post-orogenic igneous activity in the Anti-Atlas (Morocco). Forschungszentrum Jülich, Central Library, 2001.

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Edmonds, M., Georg F. Zellmer, and S. M. Straub. The role of volatiles in the genesis, evolution and eruption of arc magmas. The Geological Society, 2015.

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United States. National Aeronautics and Space Administration., ed. A mathematical model of the structure and evolution of small scale discrete auroral arcs. School of Electrical Engineering and Laboratory of Plasma Studies, Cornell University, 1990.

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Olivier, Buchsenschutz, ed. L' evolution du canton de Levroux d'apre s les prospections et les sondages arche ologiques. Association pour la de fense et l'e tude du canton de Levroux, 1988.

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Dijk, Johannes Petrus van. Late Neogene fore-arc basin evolution in the Calabrian Arc (central Mediterranean): Tectonic sequence stratigraphy and dynamic geohistory : with special reference to the geology of Central Calabria = Laat Neogene voor-boog bekken evolutie in de Calabrese Boog (Centrale Middellandse zeegebied) : tekonische sekwentie-stratigrafie en dynamische geohistory : met speciale referentie naar de geologie van centraal Calabrië. Faculteit Aardwetenschappen der Rijksuniversiteit te Utrecht, 1992.

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-C, Wezel F., and International Conference on the Origin of Arcs (1986 : Urbino), eds. The origin and evolution of arcs: Selected papers from the International Conference on the Origin of Arcs, held at the University of Urbino,Central Italy, September 22-25, 1986. Elsevier, 1988.

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Francheteau, J., and J. W. H. Monger. Circum-Pacific Orogenic Belts and Evolution of the Pacific Ocean Basin. Wiley & Sons, Limited, John, 2013.

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Petrology and tectonic evolution of pre-Tertiary rocks of the Blue Mountains region. U.S. G.P.O., 1995.

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National Aeronautics and Space Administration (NASA) Staff. Mathematical Model of the Structure and Evolution of Small Scale Discrete Auroral Arcs. Independently Published, 2018.

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Silva, Ricardo Vieira. Projeto Arca: A solidariedade fortalecendo sonhos e esperanças em Altaneira-Ceará. Brazil Publishing, 2020. http://dx.doi.org/10.31012/978-65-5861-083-0.

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The book “Arca Project: Solidarity strengthening dreams and hopes in Altaneira-Ceará” describes the history of two Non-Governmental Organizations (NGOs), known as Associação Raízes Culturais de Altaneira (ARCA) and Fundação Educativa e Cultural Arca (Fundação Arca), linked especially by the spirit of solidarity. While the Association, formed mainly by family farmers, works with income generation and solidarity economy projects, the Arca Foundation develops projects in line with local and regional education and culture. The work begins by portraying the path of Carlos Alberto Tolovi in a social
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Chapitres de livres sur le sujet "Arch. evolution"

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Wu, Di, Aiwen Li, Yongli You, and Jianjian Wu. "Experimental Study on the Factors Influencing the Arch Height of Overlying Soil in Karst Area." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2417-8_21.

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AbstractOn the evolution of collapsed soil caves, it is important to consider the soil arching effect and the factors that influence arch height. This study examines the impact of collapse width and filling height on load distribution and soil displacement to uncover the stability mechanisms of soil cavities. The findings reveal that: (1) Explaining the formation of soil sinkholes in terms of load sharing, it is evident that the soil arching effect enables transfer of pressure exerted above the soil arch to the nearby stable region that results in stress deflection within the stable area. (2)
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Espurt, Nicolas, Patrice Baby, Stéphane Brusset, Martin Roddaz, Wilber Hermoza, and Jocelyn Barbarand. "The Nazca Ridge and Uplift of the Fitzcarrald Arch: Implications for Regional Geology in Northern South America." In Amazonia: Landscape and Species Evolution. Wiley-Blackwell Publishing Ltd., 2011. http://dx.doi.org/10.1002/9781444306408.ch6.

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Mantovani, Enzo, Marcello Viti, Daniele Babbucci, and Caterina Tamburelli. "Western Pacific Trench-Arc-Back Arc Systems." In Neogenic Evolution of the Mediterranean Region. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-62150-5_5.

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Hickman, Arthur H. "Mesoarchean Basin Evolution Inland of Magmatic Arcs." In Modern Approaches in Solid Earth Sciences. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-18007-1_9.

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Rodríguez-Fernández, N. J., J. Martín-Pintado, and P. De Vicente. "The Ionized Gas in the Galactic Center Radio Arc." In The Evolution of Galaxies. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-3311-3_73.

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Lamiroy, Bart, and Yassine Guebbas. "Robust and Precise Circular Arc Detection." In Graphics Recognition. Achievements, Challenges, and Evolution. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13728-0_5.

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Arculus, R. J., and L. J. Ruff. "Genesis of Continental Crust: Evidence from Island Arcs, Granulites, and Exospheric Processes." In Granulites and Crustal Evolution. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2055-2_2.

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Bribiescas, Richard G., and Erin E. Burke. "Health, Evolution, and Reproductive Strategies in Men: New Hypotheses and Directions." In The Arc of Life. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-4038-7_6.

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Beilis, Isak. "Cathode Spot Theories. History and Evolution of the Mechanisms." In Plasma and Spot Phenomena in Electrical Arcs. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44747-2_15.

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Arculus, Richard J. "Evolution of arc magmas and their volatiles." In Geophysical Monograph Series. American Geophysical Union, 2004. http://dx.doi.org/10.1029/150gm09.

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Actes de conférences sur le sujet "Arch. evolution"

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Wentao, LIU, ZHANG Shuxiang, FU Zhiqiang, YUAN Di, and YANG Bocao. "The Evolution Analysis of Surrounding Rock Disturbance in Subway Tunnels Based on the W-ARIMA Method and the Enlarged Arch Footing Construction Method." In The 14th International Conference on Logistics and Systems Engineering. Aussino Academic Publishing House, 2025. https://doi.org/10.52202/078960-0083.

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Chen, Hongbin, Gang Li, Jinru Sun, et al. "Research on the Shape Evolution and Voltage Characteristics of High Current Vacuum Arcs." In 2024 IEEE International Conference on High Voltage Engineering and Applications (ICHVE). IEEE, 2024. http://dx.doi.org/10.1109/ichve61955.2024.10676053.

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Wang, Z., C. Zhang, K. Wang, et al. "Study on Evolution Patterns of Power Frequency Arc Discharges in Transformer Oil." In 2024 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2024. http://dx.doi.org/10.1109/icops58192.2024.10626388.

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Wang, Shaolin, Haoyang Che, He Jiang, Yi Mei, Yi Liu, and Ying Gu. "Diverse Counterfactual Explanations by Differential Evolution with Ablation Strategies for Uncertain Capacitated Arc Routing Problem." In 2025 IEEE Congress on Evolutionary Computation (CEC). IEEE, 2025. https://doi.org/10.1109/cec65147.2025.11043113.

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Harkrider, J. D., W. W. Aud, C. L. Cipolla, and J. T. Hansen. "The Evolution of an Applied Hydraulic Fracture Project, Frontier Formation Moxa Arch, Wyoming." In Low Permeability Reservoirs Symposium. Society of Petroleum Engineers, 1995. http://dx.doi.org/10.2118/29550-ms.

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Shea, Neil. "The evolution and performance of the Henderson Mine’s C-arch shotcrete drawpoint support." In Ninth International Symposium on Ground Support in Mining and Underground Construction. Australian Centre for Geomechanics, Perth, 2019. http://dx.doi.org/10.36487/acg_rep/1925_17_henderson.

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MacNaughton, Robert B., Karen M. Fallas, Brian R. Pratt, Bernard C. MacLean, and Elizabeth C. Turner. "TECTONIC EVOLUTION OF THE MACKENZIE ARCH, A MAJOR CONTROL ON CAMBRIAN DEPOSITIONAL PATTERNS IN THE WESTERNMOST NORTHWEST TERRITORIES, CANADA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-281200.

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Röth, Joschka, Yury Alexeevich Karpov, Anton Georgievich Kalmykov, Ekaterina Viktorovna Beseleva, Ralf Littke, and Georgy Alexandrovich Kalmykov. "Thermo-Tectonic Evolution and Numerical Petroleum System Modeling of One of the Oil Fields on Krasnoleninsky Arch, SW West Siberian Basin." In SPE Russian Petroleum Technology Conference. Society of Petroleum Engineers, 2020. http://dx.doi.org/10.2118/201959-ms.

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Röth, Joschka, Yury Alexeevich Karpov, Anton Georgievich Kalmykov, Ekaterina Viktorovna Beseleva, Ralf Littke, and Georgy Alexandrovich Kalmykov. "Thermo-Tectonic Evolution and Numerical Petroleum System Modeling of One of the Oil Fields on Krasnoleninsky Arch, SW West Siberian Basin (Russian)." In SPE Russian Petroleum Technology Conference. Society of Petroleum Engineers, 2020. http://dx.doi.org/10.2118/201959-ru.

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Fenu, Luigi, and Giuseppe C. Marano. "Steel Truss-Type Arches Optimization Under Multi-Load Cases." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.1338.

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&lt;p&gt;Structural optimization of arches under multi-load cases is faced. For this aim, truss-type arches are to be considered because, under different load cases, bending effects unavoidably occur in single-rib arches shaped under one load case only. An effective procedure for simultaneous topology, shape and size optimization of truss-arches under multi-load cases is proposed. For this aim, shape, size and topology variables are assembled in a unique set of variables that are simultaneously optimised by the optimization algorithm. For given Pratt-type brace pattern, different topologies ha
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Rapports d'organisations sur le sujet "Arch. evolution"

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MacLean, B. C., K. M. Fallas, and T. Hadlari. The evolution of Keele Arch, a multiphase feature of the northern mainland, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/293877.

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Lucas, S. B., and M. R. St-Onge. Evolution of Archean and Early Proterozoic Magmatic Arcs in northeastern Ungava Peninsula, Quebec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132566.

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Zagorevski, A., and C. R. van Staal. Cordilleran magmatism in Yukon and northern British Columbia: characteristics, temporal variations, and significance for the tectonic evolution of the northern Cordillera. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/326063.

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Geochemical and temporal characterization of magmatic rocks is an effective way to test terrane definitions and to evaluate tectonic models. In the northern Cordillera, magmatic episodes are mostly interpreted as products of continental arc and back-arc settings. Re-evaluation of Paleozoic and Late Mesozoic magmatic episodes presented herein highlights fundamental gaps in the understanding of the tectonic framework of the northern Cordillera. In many cases, the character of magmatism and temporal relationships between various magma types do not support existing tectonic models. The present re-
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Kellett, D. A., and A. Zagorevski. Overlap assemblages: Laberge Group of the Whitehorse Trough, northern Canadian Cordillera. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/326064.

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The Laberge Group was deposited during the Early to Middle Jurassic in a marginal marine environment, in the northern Canadian Cordillera. It occurs as a narrow, elongated siliciclastic unit along more than 600 km of strike length, overlapping the Intermontane terranes of southern Yukon and northwestern British Columbia. The Laberge Group was deposited on the Late Triassic Stuhini and Lewes River groups, a volcano-plutonic complex of the Stikine terrane (Stikinia), and, locally, the Kutcho Arc. It is overlain by Middle Jurassic to Cretaceous clastic units. The variations in clast composition a
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Ernst, W. G. Fluid flow, element migration, and petrotectonic evolution of the early Mesozoic Central Klamath island arc, northwesternmost California. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/6033634.

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Simandl, G. J., R. J. D'Souza, S. Paradis, and J. Spence. Rare-earth element content of carbonate minerals in sediment-hosted Pb-Zn deposits, southern Canadian Rocky Mountains. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328001.

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Paleozoic platform carbonate rocks of the Rocky Mountains host Mississippi Valley-type (MVT), magnesite, barite, and REE-barite-fluorite deposits. Farther west, platform carbonate rocks of the Kootenay Arc host MVT and fracture-controlled replacement (FCR) deposits. This is the first systematic LA-ICP-MS study of carbonates in MVT and FCR deposits. We investigated seven MVT deposits in the Rocky Mountains, and five MVT deposits in the Kootenay Arc. None of the post-Archean Australian shale (PAAS)-normalized REE profiles show light REE (LREE) depletion and strong negative Ce anomalies character
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Ernst, W. G. Fluid flow, element migration, and petrotectonic evolution of the Early Mesozoic central Klamath Island arc, northwesternmost California. Progress report. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/171252.

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Amend, Bill. L52311 Vintage Girth Weld Defect Assessment. Pipeline Research Council International, Inc. (PRCI), 2010. http://dx.doi.org/10.55274/r0010018.

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A review was performed of the currently known in-service performance, integrity concerns, and methods of assessing the integrity of vintage pipelines containing girth welds made by the shielded metal arc welding process. The scope of work included both a literature review and surveys of pipeline operators and subject matter experts. The literature review focused on several areas influencing girth weld integrity, including the evolution of pipeline construction and welding practices, welding consumables, weld inspection, testing, and quality assurance, typical attributes of vintage girth welds
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Johannson, G. G., and V. J. McNicoll. New U-Pb data from the Laberge Group, northwest British Columbia: implications for Stikinian arc evolution and Lower Jurassic time scale calibrations. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/209098.

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Ernst, W. G. Fluid flow, element migration, and petrotectonic evolution of the early Mesozoic Central Klamath island arc, northwesternmost California. Progress report, September 15, 1990--September 14, 1991. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10104952.

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