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Relevant bibliographies by topics / Forage percussif

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Academic literature on the topic 'Forage percussif'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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Journal articles on the topic "Forage percussif"

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Travassos, Rosana Maria Coelho, Ana Raquel Rocha Correia Vilela, Josué Alves, et al. "REPARO DA RADIOTRASPARÊNCIA ÓSSEA PERIAPICAL EXTENSA DOS INCISIVOS INFERIORES APÓS 6 MESES DA OBTURAÇÃO DO SISTEMA DE CANAIS RADICULARES. RELATO DE CASOS." LUMEN ET VIRTUS 16, no. 48 (2025): 5721–29. https://doi.org/10.56238/levv16n48-086.

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Paciente, sexo feminino, 41 anos, foi encaminhada a um especialista em endodontiia para tratamento endodôntico dos dentes 31 e 32. Durante a anamnese, observou-se, fístula ativa, mobilidade, dor à percussão vertical e horizontal, palpação no dente 31, e ausência de sintomatologia ao estímulo térmico ao frio nos dois dentes. Radiograficamente, uma radiotransparência periapical extensa e difusa, envolvendo os dois dentes. abertura coronária do dente 31, uma vez que existia dor à percussão, com broca esférica 1012. O comprimento de trabalho foi determinado com localizador apical, seguido por irri

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Travassos, Rosana Maria Coelho, Samuel Nogueira Lima, Wiliam Wale Rodrigues Martins, et al. "Tratamento endodôntico de molar inferior com curvatura acentuada portador de periodontite apical crônica." REVISTA DELOS 18, no. 67 (2025): e4941. https://doi.org/10.55905/rdelosv18.n67-005.

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Paciente do gênero masculino, 59 anos, sem histórico de doenças sistêmicas, foi encaminhado ao consultou particular, queixando-se de dor à percussão vertical no dente 36. Radiograficamente, observou-se radiotrasparência óssea periapical e região de furca. Após abertura coronária, realizou-se exploração dos canais radiculares com limas #10 e #15. A instrumentação dos canais radiculares foi feita na medida zero do localizador apical eletrônico: #35.04 (Solla Files) nos canais mésio-vestibular e mésio-lingual #40.04 no canal distal. A patência foraminal, ultrapassando em 1 mm da saída do forame a

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Coelho Travassos, Rosana Maria, Christiano Ferraz Milagres, Gustavo Moreira de Almeida, et al. "Tratamento endodôntico de dente portador de lesão periapical sugestiva de cisto periapical - Controle e 6 meses." Brazilian Journal of Implantology and Health Sciences 6, no. 10 (2024): 4646–57. http://dx.doi.org/10.36557/2674-8169.2024v6n10p4646-4657.

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Paciente do sexo feminino, 43 anos, classificado como ASA I, foi encaminha ao consultório particular de um endodontista. Ao exame clínico observou-se, presença de dor na percussão vertical e horizontal, resposta negativa ao teste de sensibilidade pulpar a frio realizado com gás refrigerante Endofrost -50°C (Roeko, Langenau, Alemanha). Após a realização radiográfico, constatou-se rarefação óssea periapical extensa, sugerindo cisto periapical no dente 22. Após abertura coronária houve drenagem via canal radicular. O preparo do canal foi realizado com instrumentos rotatórios Logic (40.01 e 40.05)

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Pereira, Helen Batista Menezes, Joyce Ferreira do Nascimento, Carina Printes Lobato, et al. "Tratamento endodôntico em dente com rizogênese incompleta com a utilização do hidróxido de cálcio: Relato de caso." Research, Society and Development 10, no. 16 (2021): e579101624416. http://dx.doi.org/10.33448/rsd-v10i16.24416.

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Objetivo: O objetivo deste trabalho é apresentar um caso clínico de tratamento endodôntico em dente com rizogênese incompleta e necrose pulpar através de técnica de apicificação, utilizando medicação intracanal com hidróxido de cálcio durante 1 ano de tratamento, obtendo resultados favoráveis. Metodololgia: Partindo da permissão da paciente por meio do Termo de Consentimento Livre e Esclarecido em partilhar sua imagem para devido fim, o presente estudo trata de um relato de caso clínico de cunho analítico descritivo (Pereira et al., 2018). Relato de caso: Paciente L. V., sexo feminino, 08 anos

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"Taux de forage des forets de percussion rotative et caractéristiques de la roche." Journal of Terramechanics 25, no. 3 (1988): 239. http://dx.doi.org/10.1016/0022-4898(88)90007-9.

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Tianlai, Yu, Yuan Zhengguo, and Shan Sidi. "Research on Simulation Model of Collision Force between Floating Ice and Pier." January 21, 2010. https://doi.org/10.5281/zenodo.1074793.

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Adopting the measured constitutive relationship of stress-strain of river ice, the finite element analysis model of percussive force of river ice and pier is established, by the explicit dynamical analysis software package LS-DYNA. Effects of element types, contact method and arithmetic of ice and pier, coupled modes between different elements, mesh density of pier, and ice sheet in contact area on the collision force are studied. Some of measures for the collision force analysis of river ice and pier are proposed as follows: bridge girder can adopt beam161 element with 3-node; pier below the

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Thiago, Augusto Rochetti Bezerra, Pereira Tangerino Filho Edson, Henrique Cardoso de Castro Phelipe, et al. "MONITORING OF BLOOD AND INTRACRANIAL PRESSURE IN AVIATORS OF THE BRAZILIAN AIR FORCE SUBMITTED TO HIGH TRAINING LOADS IN FORCE SIMULATOR." July 4, 2018. https://doi.org/10.5281/zenodo.1346784.

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Purpose: Intracranial pressure (ICP) is modulated by 3 components: brain tissue, cerebral blood and cerebrospinal fluid. The ICP waveform contains 3 upstrokes in one wave: P1 - Percussion: systole; P2 - Tidal: intracranial compliance; and P3 - Dicrotic: diastole. Pilots are known to experience headaches when flying frequently, particularly when undergoing the influence of high gravitational attraction (Gz). These headaches are caused by changes in ICP, however, the factors behind these changes are still unclear and could be linked to the Gz itself or the movements. Method: This study aimed to

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Dissertations / Theses on the topic "Forage percussif"

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Aldannawy, Houssam Aldine. "Le forage percussif en conditions extrêmes : expérimentations et modélisations numériques." Electronic Thesis or Diss., Université Paris sciences et lettres, 2022. http://www.theses.fr/2022UPSLM043.

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Le forage percussif est une technologie qui consiste à appliquer une série d’impacts dynamiques conduisant à la fragmentation de la roche par deux mécanismes principaux : l’écrasement et l’écaillage. Ces mécanismes sont fortement influencés par de nombreux facteurs qui ont fait l’objet d’investigations expérimentales et numériques pendant cette thèse. Un dispositif expérimental a été développé pour réaliser des essais d’impacts dynamiques. Un système de mesure précis a été également mis au point afin d’avoir les résultats des nombreuses séries d’essais qui ont été menées dans le cadre de cette

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Books on the topic "Forage percussif"

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Instant Sound Forge. CMP Books, 2004.

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Park, Chan E., Adnan Hossain, William Grange, et al. Korean Pansori as Voice Theatre. Bloomsbury Publishing Plc, 2023. http://dx.doi.org/10.5040/9781350174917.

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This book introduces readers to the historical, performative, and cultural context of pansori, a traditional Korean oral story-singing art. Written by a scholar-practitioner of the form, this study is structured in three parts and begins by introducing readers to the technical, aesthetic, and theoretical components of pansori as well as the synthesis of vocal and percussive elements that stage the narrative. It also reflects on the historical contexts of pansori alongside Korea’s transformation from Joseon monarchy to modern statehood. It argues that with colonial annexation came modernist inf

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Book chapters on the topic "Forage percussif"

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Glocker, Christoph. "Percussion Drilling Machine." In Set-Valued Force Laws. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-540-44479-4_13.

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Allen, Ray. "J’Ouvert in Brooklyn." In Jump Up! Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190656843.003.0009.

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Chapter 8 describes the emergence of Brooklyn’s J’Ouvert celebration in the 1990s. With its steelband and percussion-only policy, which strictly forbade deejays and amplified bands, J’Ouvert reflected a conscious attempt to preserve and revitalize older Carnival musical practices as forms of cultural heritage in response to their near disappearance from the more commercial Eastern Parkway parade. This chapter will flesh out the emergence of Brooklyn J’Ouvert, focusing on how a group of Trinidadian migrants revived a century-old celebration to create an event that appeared to some to actually b

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Lapidus, Benjamin. "Strings and Skins." In New York and the International Sound of Latin Music, 1940-1990. University Press of Mississippi, 2020. http://dx.doi.org/10.14325/mississippi/9781496831286.003.0002.

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This chapter outlines the important history and role of craftsmen based in New York City who produced and repaired traditional instruments used in the performance of Latin music. It introduces individuals who came from Cuban, Puerto Rican, Dominican, and Jewish communities, and examines how their instruments physically represented the actual sound of Latin Music to New York and the world on widely disseminated recordings. Many of these instrument makers also sold their instruments beyond New York City and the United States. The chapter also discusses the work of builders and musicians in New Y

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Afzali, Behdad, and Rupert P. M. Negus. "Abdomen." In The Pocketbook for PACES. Oxford University Press, 2012. http://dx.doi.org/10.1093/oso/9780199574186.003.0011.

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The abdominal station in MRCP PACES should be a ‘set piece’ that can be approached with confidence. You are likely to encounter patients with chronic stable disease such as chronic liver disease, haematological malignancy with associated hepatosplenomegaly and chronic kidney disease, particularly those undergoing some form of renal replacement therapy, for instance dialysis or transplantation. Signs in the abdomen are generally straightforward to elicit and the commonest obstacles to passing are poor presentation or a failure to put the features together in a logical fashion. Many diagnostic f

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Conference papers on the topic "Forage percussif"

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Peltokangas, Suvi, Sirpa Launis, Markus Saarela, and Jouni Mattila. "Modeling and Simulation of a Hydraulic Drill for Control System Design Purposes." In ASME/BATH 2017 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fpmc2017-4290.

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In rock excavation processes, hydraulic rotary-percussive drilling is used for drilling and blasting in both surface and underground drilling operations. A hydraulic percussive drilling system is composed of percussion, rotation, feed, and flushing functions. In this paper, we detail the interaction of feed and rotation functions using a rock model. The feed actuator is a cylinder drive and a hydraulic motor actuator rotates the drill bit. The feed is force controlled and rotation is torque controlled by a feed reduction valve acting on the pressure compensator of the mobile hydraulic proporti

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Sun, Zhaowei, Xiaoguang Wu, Zikang Wang, et al. "Research and Application of ROP Enhancing Technology with Axial-Torsional Coupled Percussion in Tight Shale Drilling." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0724.

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ABSTRACT: This paper focus on the rate of penetration (ROP) enhancing method in tight shale drilling operations. The axial-torsional coupled percussive drilling (ATCPD) is a promising technique for improving ROP in unconventional resource excavation. To determine the ROP enhancement performance of ATCPD, we conducted a series drilling tests on tight shale. Different drilling modes, i.e., rotary drilling, axial percussive drilling, and torsional percussive drilling, were compared with ATCPD, with respect to rock drilling capability. Results show that ROP and penetration depth are increased by 4

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Sun, Zhaowei, Xiaoguang Wu, Rui Yang, et al. "Numerical Analysis on Characteristics of Cracks and ROP Enhancement Performance in Hard Rocks Subjected to Axial-Torsional Coupled Percussion." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0347.

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ABSTRACT Axial-torsional coupled percussive drilling (ATCPD) is a practical technique for creating volumetric breaking patterns and increasing rate of penetration (ROP) of hard rocks. Our paper focus on numerical investigations on ATCPD process. We employed a continuous-discrete coupling method based on cohesive elements to characterize the rock failure subjected to different percussion (axial, torsional and coupled percussion). Based on this model, the penetration-cutting process of the single cutter at different percussion modes was simulated, respectively. The corresponding cracks character

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Quan, Qiquan, S. Li, S. Jiang, X. Hou, and Z. Deng. "Control of Drilling and Coring Device Based on Online Identification." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62804.

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This paper presents a drilling and coring device for the lunar exploration, which is possibly utilized to acquire the lunar regolith with a certain depth. The drilling device is composed of three components: rotary unit, percussive unit and penetrating unit. The rotary-percussion drill can work in two different operating modes: rotary mode and rotary-percussive mode, depending on the properties of cut object. In the relatively loose regolith, rotation and penetration can make the drill work in a well state. However, once rock is encountered in the drilling process, besides rotation and penetra

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Fang, Zhou, Gang Wu, Ce Song, Jun Yuan, and Zhe Wang. "Study on the Mechanical Response of Gas Cylinders Under Shock Load." In ASME 2023 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/pvp2023-107108.

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Abstract In order to ensure the safe operation of pressure vessel cylinders in the service stage, the mechanical response law of gas cylinders under dynamic load under different working conditions is clarified. In this study, numerical simulation was used to study the different shock loads of gas cylinders at different positions. The finite element analysis results of the impact load of the cylinder when the sphere and cone are used as the percussive objects are compared and analyzed, and it is concluded that the steel cylinder will cause obvious deformation of the cylinder as a whole when sub

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Ji, Ran, Huaizhong Shi, Zhaowei Sun, Han Chen, Chao Xiong, and Hengyu Song. "Characteristics of Conicl Diamond Tooth for Breaking Hard Rock Under Vibratory Percussion." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0637.

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ABSTRACT The application of conicl PDC teeth to vibratory percussion drilling technology is expected to break deep hard rock efficiently and improve drilling efficiency. In this paper, the characteristics of conicl diamond tooth cutting and hard rock under percussion are investigated. Firstly, experiments on percussion compression of conicl diamond tooth into the broken rock were carried out to analyse the percussion energy and the characteristics of rock crushing pits. Secondly, a numerical model of the cutting process of conicl diamond tooth under the vibratory percussion was established. Th

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Hatman, Victor G., Imtiaz Haque, and Amit Bagchi. "Dynamics of a Flexible Rotating Beam Under Percussive and Constrained Motion." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0714.

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Abstract This paper presents a dynamical and computational model for the analysis of the interaction of a flexible Euler-Bernoulli beam attached to a uniformly rotating hub, and a flat rigid surface, parallel to the axis of the hub. The dynamic model is derived using Lagrange’s equations in conjunction with an eigenfunctions-generalized-coordinates based representation of the displacement fields. It is shown that one must account for the longitudinal displacements if dynamical stiffening is to be observed. A quadratic approximation for these displacements is used and a computationally effectiv

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F. Paiva, Lucas, Hugo G. Lopes, Leonardo B. Felix, and Rodolpho V. A. Neves. "Estimação do compasso musical do forró utilizando rede perceptron multicamadas." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1331.

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Por meio da Lei No 13.409 de 2016, que altera a "Lei das Cotas" (Lei No 12.711 de 2012), tem-se a reserva de vagas para pessoas surdas no ensino superior, garantindo maior acesso desses estudantes à universidade. Ao mesmo tempo, há uma forte presenca do forró na cultura universitária. O forró é marcado por instrumentos de percussão, como o triângulo e a zabumba, e por compassos musicais que ditam a velocidade de movimento da dança. Visando a inclusãodo público surdo em atividades culturais envolvendo o forró, este trabalho propõe estimar o tempo de compasso musical em músicas de forró utilizan

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Mishima, Akira, Yusuke Fuke, Atsuyuki Miura, Toshiki Hirogaki, and Eiichi Aoyama. "Playing a Musical Saw With a Humanoid Robot: Investigation for Industrial Automation." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97731.

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Abstract The objective of this study was to automate the dual-arm coordination of a humanoid robot when using a musical saw as a percussion instrument to produce a target sound. We examined the striking motion of the robot using its elastic stiffness, the change in vibration caused by the striking tool resulting from the robot arm-applied force on the saw, and dual arm cooperative motion based on striking sound feedback. To accomplish this, the frequency characteristics of the musical saw and the location of sound generation were determined. Based on the characteristics of the striking task an

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Cherng, John G., Tong Ge, and Sheng-Lih Peng. "Vibration Isolation and Damping for Bucking Bars." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-4119.

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Abstract Bucking bars are used with pneumatic percussive rivet tools for airplanes, ships, and heavy vehicle constructions. The rivet is actually flattened by the bucking bar instead of the riveting hammer when the force is transmitted to the contact point between the rivet stem and the bucking bar. It has been proven that the operator who is holding the backing bar receives higher level of vibration than the person who is operating the rivet hammer. However, more attention has been given to the design modifications of the rivet hammer than the bucking bars which may due to the economic reason

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