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Journal articles on the topic 'Effet de compression'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Danjou, Anne, and Sophie Blaise. "Effet d’une formation courte sur la pose de compression veineuse." Vascular Diseases 50, no. 1 (2025): 48. https://doi.org/10.1016/j.vasdi.2025.01.035.

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Lussiana, T., A. Terrillon, J. L. Raynaud, N. Tordi, L. Mourot, and A. Ménétrier. "Effet dose-réponse de la compression élastique sur les vibrations musculaires." Science & Sports 30, no. 2 (2015): 101–4. http://dx.doi.org/10.1016/j.scispo.2014.09.004.

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3

Bouchereau, A., C. Martinet, G. Gamache, J. L. Honeine, and P. Rougier. "Effet des bas de compression sur la stabilisation hémodynamique et posturale." Neurophysiologie Clinique/Clinical Neurophysiology 45, no. 4-5 (2015): 417. http://dx.doi.org/10.1016/j.neucli.2015.10.076.

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4

Didier RASTEL. "Principes de base, mode d’action et effets de la compression médicale en pathologie vasculaire." Les pathologies vasculaires (anciennement ANGEIOLOGIE) 71, no. 01 (2019): 9. http://dx.doi.org/10.54695/mva.71.01.2234.

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La compression médicale dans les affections vasculairesest un traitement ancien mais son action physiologique estencore mal comprise. Le catalogue des effets sur l’organisme est riche notamment sur le plan de l’action macroet microcirculatoire mais la relation entre effets physiologiques et bénéfice clinique reste à ce jour peu claire. Larelation dose-effet est difficile à mesurer dans les étudeset la variabilité de la pression exercée sur les membres d’unindividu à l’autre rend la généralisation des résultats délicate. Cependant, deux effets principaux de la compressionpeuvent être mise en av

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SAMI, Soraya, and Kamel BOUZID. "Treatment of bone metastases by intravenous bisphosphonates and denosumab in breast cancer." Batna Journal of Medical Sciences (BJMS) 6, no. 1 (2019): 18–21. http://dx.doi.org/10.48087/bjmsra.2019.6106.

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Les métastases osseuses sont fréquentes dans le cancer du sein. Elles sont à l’origine d’une morbidité importante, entrainant des fractures, des douleurs osseuses, une compression médullaire ou une hypercalcémie. Les bisphosphonates intraveineux et le denosumab, associés aux différents traitements multidisciplinaires, améliorent la qualité de vie des patients. En effet, ils permettent une réduction des complications osseuses et la survenue des événements osseux.

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Leclerc, Marc. "Traumatismes de la carapace chez la tortue : présentation de la technique de cerclage en huit." Le Nouveau Praticien Vétérinaire canine & féline 20, no. 85 (2023): 68–72. http://dx.doi.org/10.1051/npvcafe/2024011.

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Les traumatismes de la carapace sont fréquemment rapportés chez tous les types de tortues. Sous les écailles se trouve un agencement de plaques osseuses qui protègent les organes de la cavité cœlomiques. Les poumons sont les organes les plus dorsaux, ils couvrent les autres viscères. Lors de traumatisme, il faut réaliser un bilan lésionnel complet, puis stabiliser cliniquement l’animal. Vient ensuite la bonne gestion des plaies, qui est un préambule essentiel à la stabilisation orthopédique. Les rinçages favorisent l’assainissement des plaies par détersion autolytique. Lors de perte de fragmen

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RAMANANDRAIBE, Tanteliniaina Mbolanirina, Pierre RAKOTOMAMONJY, Guy Joël ROBISONARISON, and Edouard Ravalison ANDRIANARISON. "Amélioration Des Qualités Mécaniques D’une Brique De Terre Comprimée Stabilisée Au Ciment Par Trempe De Consolidation Au Silicate De Soude." International Journal of Progressive Sciences and Technologies 38, no. 1 (2023): 388. http://dx.doi.org/10.52155/ijpsat.v38.1.5195.

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Le ciment constitue un stabilisant courant pour la stabilisation des briques en terre crue, pourtant sa production dégage beaucoup de gaz à effet de serre nuisibles pour l’environnement. De plus, son coût élevé limite son utilisation dans la stabilisation des matériaux en terre. En effet, une brique de terre comprimée stabilisée au ciment BTCSC nécessite l’ajout d’une teneur assez élevée supérieur à 5% de ciment pour assurer une bonne résistance mécanique à la compression. Cependant, ces BTCSC ont la faiblesse de ne pas résister à l’immersion dans l’eau. Notre objectif est de maintenir à 5% la

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8

Ma, Wei Hua, and Hong Zhen Kang. "Experimental Study on Compressive Behavior of CFRP Confined Concrete Columns." Advanced Materials Research 446-449 (January 2012): 3725–29. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3725.

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Compressive tests of 30 concrete column specimens with three concrete strength grades are carried out in this paper to study ultimate compressive strength of specimens. The specimens are divided into three groups, that is, unconfined, confined by CFRP with no initial compression and confined by CFRP with various initial compressions. The different initial compressions’ influence on ultimate stresses and strains are investigated. The decrease of CFRP reinforcing effect due to pre-compression are analyzed. The research results provide experimental datum for reinforced design of existing concrete

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9

Gharbi, Mohamed, and Mohamed Aymen Labiod. "Une application comparative pour l’enseignement des méthodes de compression d’images par transformées orthogonales." J3eA 21 (2022): 2039. http://dx.doi.org/10.1051/j3ea/20222039.

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Nous proposons dans cette contribution une interface graphique comme outil pédagogique pour l’enseignement des méthodes de compression par transformées orthogonales utilisées dans l’encodage d’images. Cet outil est utilisé dans l’enseignement proposé aux étudiants en MASTER du département Développement, Recherche, Enseignement en Audiovisuel et Multimédia (DREAM) de l’Université Polytechnique Hauts-de-France (Valenciennes – France). Les offres de formation s’appuient notamment sur un enseignement du traitement de signal, des images ainsi que la compression des images et de la vidéo. Les deux a

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10

Khamlichi, Abdellatif, Mohammed Bezzazi, Larbi Elbakkali, and Ali Limam. "Effet des imperfections géométriques sur la stabilité des coques élastiques cylindriques." Canadian Journal of Civil Engineering 31, no. 1 (2004): 27–32. http://dx.doi.org/10.1139/l03-084.

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The effects of geometrical imperfections on the critical load of elastic cylindrical shells when subjected to axial compression are studied through analytical modelling. In addition to distributed defects of both axisymmetric or asymmetric forms, emphasis is put on the more severe case of localized defects satisfying the axial symmetry. The Von Kármán – Donnell shell equations were used. The obtained results show that shell strength at buckling varies very much with the defect amplitude. These variations are not monotonic in general. They indicate however a clear reduction of the shell critica

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Marais, Christian, and Anne Mavel. "Ténacité des composites vieillis. Effet du vieillissement thermique sur la résistance en compression de composites carbone/BMI." Revue des composites et des matériaux avancés 12, no. 1 (2002): 95–116. http://dx.doi.org/10.3166/rcma.12.95-116.

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Lee, Jae-Min, and Hyeong-Wan Yun. "Effect of Chest Compression Position Depending on the Rescuer’s Hip Joint Angle During Basic CPR." Fire Science and Engineering 34, no. 2 (2020): 103–9. http://dx.doi.org/10.7731/kifse.0902eaff.

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This study aims to investigate the improvement in basic CPR quality on the basis of the hip joint angle of the rescuer among students in the Department of Emergency Medical Technology who completed a basic CPR curriculum. In this study, we carried out a comparative analysis using SimPad SkillReporter and Resusci Anne® QCPR® to measure the quality of CPR (depth of chest compressions, full relaxation, compression speed, and more) on the basis of the rescuer’s hip joint angle in accordance with the 2015 AHA Guidelines and conducted chest compressions and CPR 5 times in a 30:2 ratio. It was found

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HAN, FENGXIA, QING LIU, XIN GUO, MENG ZHANG, and XIA HAN. "ANALYTICAL STUDY ON AXIAL AND ECCENTRIC COMPRESSIVE BEHAVIOR OF POPLAR COLUMN STRENGTHENED BY BFRP." WOOD RESEARCH 67(1) 2022 67, no. 1 (2022): 11–25. http://dx.doi.org/10.37763/wr.1336-4561/67.1.1125.

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In this work, the compression behaviour of the Xinjiang poplar column was reinforced by basalt fibre reinforced polymer (BFRP) strips with different reinforced configurations, and thenumerical simulations were performed on the axial and eccentric compressions of poplar columns unreinforced and reinforced with BFRP to assess the effect of the bearing capacity and deformation of the columns. The results show that the use of BFRP to reinforce the Xinjiang poplar column effectively improves its axial compressive bearing capacity (axial compression) andbending bearing capacity (eccentric compressio

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B, Sairamakrishna, Gopala Rao T, and Rama Krishna N. "Cop Enhancement of Vapour Compression Refrigeration System." Indian Journal of Production and Thermal Engineering (IJPTE) 1, no. 2 (2021): 1–6. https://doi.org/10.54105/ijpte.B2004.061221.

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This experimental investigation exemplifies the design and testing of diffuser at compressor inlet and nozzle at condenser outlet in vapour compression refrigeration system with the help of R134a refrigerant. The diffuser with divergence angle of 12°,14° and the nozzle with convergent angle 12°,14° are designed for same inlet and outlet diameters. Initially diffusers are tested at compressor inlet diffuser is used with inlet diameter equal to exit tube diameter of evaporator and outlet tube diameter is equal to suction tube diameter of the compressor. Diffuser helps to increase

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15

Baraka, Abdelhak, Mohammed Matallah, Mustapha Djafour, and Mokhtar Bouazza. "Caractérisation des effets régissant le comportement dynamique du béton." Matériaux & Techniques 106, no. 5 (2018): 502. http://dx.doi.org/10.1051/mattech/2018043.

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La description du comportement du béton sous chargements dynamiques (explosions, collisions, séismes…) fait actuellement l’objet de nombreux travaux de recherches. Bien que la modélisation reste complexe pour ce matériau à cause de la présence simultanée de plusieurs phénomènes (l’endommagement, les effets d’inertie et de viscosité, la fissuration…), un bon nombre d’approches ont été proposé en associant ces phénomènes (endommagement (Pedersen et al., Eng. Fract. Mech. 75, 3782 (2008) [1]), viscosité (Bazant et al., J. Eng. Mech. ASCE 126(9), 971 (2000a); Bazant et al., J. Eng. Mech. ASCE 126(

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Plaisance, P., F. Adnet, D. Epain, et al. "R224 Effet de la compression-decompression active sur la survie a long terme chez des patients en arret cardiaque extra-hospitalier." Annales Françaises d'Anesthésie et de Réanimation 17, no. 8 (1998): 924. http://dx.doi.org/10.1016/s0750-7658(98)80343-2.

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Chauveau, M., G. Thiney, S. Bassez, F. Cros, A. Ouchene, and F. Verriere. "Chaussette de compression à effet barrière aux infrarouges pour limiter l’échauffement de la peau en conditions estivales. Étude clinique de validation." Journal des Maladies Vasculaires 40, no. 5 (2015): 312–13. http://dx.doi.org/10.1016/j.jmv.2015.07.102.

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18

Arfaoui, H., C. Belhaj, N. Ait Mouddene, W. El Khattabi, and M. H. Afif. "Sarcome De Type Ewing Thoracique Primitif Compliqué D’une Compression Médullaire : A Propos D’un Cas." IOSR Journal of Dental and Medical Sciences 23, no. 10 (2024): 58–61. http://dx.doi.org/10.9790/0853-2310105861.

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Les sarcomes de type Ewing (Ewing-like) sont un sous-groupe émergent de petits sarcomes ronds à globules bleus qui partagent divers degrés de similitude morphologique, immunohistochimique, moléculaire et clinique avec le sarcome d’Ewing. Nous rapportons le cas d’un patient âgé de 25 ans, tabagique chronique sevré qui présentait depuis 2 mois une douleur thoracique. L’examen clinique une pâleur cutanéo-muqueuse. La TDM thoracique a montré un processus tissulaire en regard du segment postérieur du lobe supérieur gauche ovalaire de contour régulier. L’IRM médullaire a objectivé un volumineux proc

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Malale, Aurélien I., Doty K. Wa Malale, and Nestor K. Ya Mulenda. "Fibrome géant compliqué d’une nécrobiose aseptique chez une adolescente de 18 ans : à propos d’un cas." Revue de l’Infirmier Congolais 6, no. 1 (2022): 52–55. https://doi.org/10.62126/zqrx.2022619.

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Le fibrome est une tumeur bénigne se développant au dépend du muscle lisse de l’utérus. C’est la tumeur la plus fréquente du tractus génital de la femme qui touche près de 25-40% des femmes en âge de procréer entre 30 et 50 ans. Ce qui signifie que les fibromes sont exceptionnels dans la population pédiatrique et adolescente. Par ailleurs, de façon générale, les fibromes sont asymptomatiques cependant, lorsqu’ils sont soupçonnés, ils peuvent se traduire par : les ménométrorragies, les douleurs pelviennes, l’augmentation du volume abdominal etc. Dans certains cas rares, un fibrome peut atteindr

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Fontaine, J. P., M. A. Houenou, V. Baumier, et al. "184 - La cryo-compression a-t-elle un effet antalgique dans les traumatismes fermés de la cheville et du pied aux urgences ?" Journal Européen des Urgences 17 (March 2004): 75. http://dx.doi.org/10.1016/s0993-9857(04)97194-4.

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21

Guemidi, Ismahene, Hosni Abderrahmane Taleb, and Yazid Abdelaziz. "Effet de rapport E/C sur le comportement rhéologique et physico-mécanique de Béton à Haute Performance élaboré à base de pouzzolane naturelle." Journal of Engineering and Exact Sciences 10, no. 2 (2024): 17490. http://dx.doi.org/10.18540/jcecvl10iss2pp17490.

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Les bétons à hautes performances (BHP) sont des bétons qui présentent des résistances mécaniques élevées (> 60 MPa) et une micro texture très dense (faible porosité), qui empêche la pénétration des agents agressifs. Dans le contexte de ce travail une étude expérimentale a été faite à fin d’élaborer un béton BHP à base des matériaux locaux disponible dans la région de Béchar, dont le but de réduire le cout de BHP. Le deuxième objectif de ce travail est de voir l’influence du rapport E/C (0.3, 0.35, 0.4) sur le comportement rhéologique et physico-mécanique (la maniabilité, porosité, résistanc

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RISSO, J. J., J. É. BLATTEAU, N. VALLÉE, J. H. ABRAINI, F. VIDAL, and C. MECKLER. "Narcose aux gaz inertes : risque cognitif pour l’équipage d’un sous-marin en détresse et pour son équipe de sauvetage." Médecine et Armées Vol. 43 No. 1, Volume 43, Numéro 1 (February 1, 2015): 95–100. http://dx.doi.org/10.17184/eac.6863.

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Dans un sous-marin en détresse avec une voie d’eau, la compression de l’air présent dans un compartiment augmente la pression partielle d’azote, soumettant ainsi l’équipage à un risque de narcose. Afin de pouvoir se connecter à ce sousmarin, le véhicule de secours doit être à la même pression. L’équipe médicale intervenante est ainsi soumise au même risque. La narcose entraîne des symptômes apparents, mais aussi une dégradation du traitement sensorimoteur, potentiellement dangereuse pour le bon déroulement de la mission de sauvetage. Le traitement sensorimoteur est en effet à la base de la maj

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Lee, Sang Eon, and Jung-Wuk Hong. "Effect of Crack Closure on Magnitude of Modulated Wave." International Journal of Structural Stability and Dynamics 20, no. 13 (2020): 2041018. http://dx.doi.org/10.1142/s0219455420410187.

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Fatigue cracks generated by repeated loads cause structural failures. Such cracks grow continuously and at an increasing speed owing to the concentration of stresses near the crack tips. Therefore, the early detection of fatigue cracks is imperative in the field of structural-health monitoring for the safety of structures exposed to dynamic loading. In particular, the detection of those cracks subjected to compression is known as a challenging problem in the nondestructive inspection area. The nonlinear ultrasonic modulation technique is effective for the detection of microcracks smaller than

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Heureuse, Uwitonze Ndagijimana. "Analyse d’une structure en béton arme de cinq niveau pouvant servir comme appartement dans la." International Journal of Civil Engineering, Construction and Estate Management 11, no. 2 (2023): 70–101. http://dx.doi.org/10.37745/ijcecem.14/vol11n270101.

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Le présent article a été élaboré dans le but de déterminer les éléments de structures d’une structure en béton armé R+4 pouvant servir comme appartement, les dimensions de ces éléments conformément avec la sécurité imposée et les règlements en vigueur, les caractéristiques du béton à utiliser, les aciers à employer et surtout comment allier ces deux éléments. Ensuite, elle devra entre autres durer dans le temps et résister aux éventuelles intempéries (vent, poussée des terres, …). Notre étude se propose l’objectif de faire une bonne étude de dimensionnement d’une structure en béton armé de cin

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Liu, Chunlei, Qun Zheng, Qi Wang, Aqiang Lin, Yuting Jiang, and Mingcong Luo. "Sensitivity Analysis of Multistage Compressor Characteristics Under the Spray Atomization Effect Using a CFD Model." Energies 12, no. 2 (2019): 301. http://dx.doi.org/10.3390/en12020301.

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In this paper, a CFD model is used to simulate the effect of spray atomization at the compressor inlet on a multistage axial subsonic compressor. Special attention is paid to the change of compressor characteristics with wet compression under different rotating speeds to gain the compressor characteristic lines of wet compression. The effects of pneumatic crushing and blade-wall-collision on water droplets and droplet trajectories are contrasted and analyzed under different spray conditions. Then, the whole/stage-by-stage compressor performances and the flow field are also investigated under d

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Shi, Feng Jian, Si Zhen Ye, Lei Gang Wang, and Sheng Lu. "Effect of Friction on Billet Deformation during Multi-Axial Compressions." Advanced Materials Research 143-144 (October 2010): 879–83. http://dx.doi.org/10.4028/www.scientific.net/amr.143-144.879.

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The effect of friction on compression load, effective strain, damage value and maximum principal stress were analyzed by rigid-plastic finite element method during multi-axial compressions (MAC). The results show that with the number of compressions, the maximum compression load increases gradually, the effective strain distributes ringwise and the maximum effective strain is in the center and the minimum at the surface. The damage is inclined to appear at the barreled shape perpendicular to the longitudinal axis. With the increase of friction coefficient, the maximum compression load, strain

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Grassl, Fabian F. "War Augustin der erste Calvinist? Wenn ein Lehrsystem auf Sand gebaut ist Kenneth Mitchell Wilson." European Journal of Theology 30, no. 1 (2021): 209–12. http://dx.doi.org/10.5117/ejt2021.1.017.gras.

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Zusammenfassung Das vorliegende Buch ist die gekürzte Version einer Promotionsarbeit über die wirkmächtige Wende im Denken des Augustinus von Hippo in Bezug auf die menschliche Willensfreiheit. Trotz der komprimierten Fassung bietet die deutsche Übersetzung einen sehr guten Überblick zu den eindrucksvollen Forschungsergebnissen Wilsons, welche die Sicht auf die Spättheologie Augustins und die Bewertung des Calvinismus nachhaltig prägen werden. Summary This book is the abbreviated version of a doctoral thesis on the effective turning point in the thinking of Augustine of Hippo with regard to hu

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Li, Jiuyang, Xinmei Fan, Yuepeng Zhu, et al. "Study on the effect of polypropylene fiber shape and admixture on the mechanical properties of concrete." Journal of Physics: Conference Series 2808, no. 1 (2024): 012088. http://dx.doi.org/10.1088/1742-6596/2808/1/012088.

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Abstract The effect of three different shapes of PPF on the mechanical properties of concrete at different dosages was investigated. Cubic compressive ability test, split tensile ability test, and flexural ability test were conducted on polypropylene fiber concrete to analyze the effect of PPF on compressive ability, tensile compression ratio, and flexural compression ratio. The study shows that as the shape and admixture of polypropylene fibers have an impact on the compressive strength of concrete, monofilament-type polypropylene fibers will have the worst effect on the enhancement of the ef

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Kim, Do-Young, Chang-Hoon Sim, Jae-Sang Park, Joon-Tae Yoo, Young-Ha Yoon, and Keejoo Lee. "Buckling Knockdown Factors of Composite Cylinders under Both Compression and Internal Pressure." Aerospace 8, no. 11 (2021): 346. http://dx.doi.org/10.3390/aerospace8110346.

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The internal pressure of a thin-walled cylindrical structure under axial compression may improve the buckling stability by relieving loads and reducing initial imperfections. In this study, the effect of internal pressure on the buckling knockdown factor is investigated for axially compressed thin-walled composite cylinders with different shell thickness ratios and slenderness ratios. Various shell thickness ratios and slenderness ratios are considered when the buckling knockdown factor is derived for the thin-walled composite cylinders under both axial compression and internal pressure. Nonli

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Sha, Yu, Hui Tang, Xin Song, and Jia Zhen Zhang. "Finite Element Analysis of the Effect of the Compressive Loading on Fatigue Crack Growth under Different Loading." Applied Mechanics and Materials 16-19 (October 2009): 269–72. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.269.

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In this paper, elastic-plastic finite element analysis has been performed in order to obtain the fatigue crack tip parameters under tension-compression loading. Two centre-cracked high-strength aluminum alloy with a crack length of 2mm under different tension-compression loading are analyzed. The analysis shows that the compressive loading has a significant contribution towards the crack tip plasticity and the crack tip stress. In a tension-compression loading the crack tip displacement increases with the increase of the compressive stress and the crack tip compress stress increases with the i

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Clark, Michael D., Mikaela P. Davis, Meredith A. Petschauer, Erik E. Swartz, and Jason P. Mihalik. "Delivering Chest Compressions and Ventilations With and Without Men's Lacrosse Equipment." Journal of Athletic Training 53, no. 4 (2018): 416–22. http://dx.doi.org/10.4085/1062-6050-91-17.

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Context: Current management recommendations for equipment-laden athletes in sudden cardiac arrest regarding whether to remove protective sports equipment before delivering cardiopulmonary resuscitation are unclear. Objective: To determine the effect of men's lacrosse equipment on chest compression and ventilation quality on patient simulators. Design: Cross-sectional study. Setting: Controlled laboratory. Patients or Other Participants: Twenty-six licensed athletic trainers (18 women, 8 men; age = 25 ± 7 years; experience = 2.1 ± 1.6 years). Intervention(s): In a single 2-hour session, partici

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Tiwari, Priya, A. H. Siddiqui, Amit Singh, S. V. S. Narayan Murty, and Sushil Mishra. "Tension-Compression Asymmetry in AA2219: Effect of Temperature and Stress States." MATEC Web of Conferences 408 (2025): 02028. https://doi.org/10.1051/matecconf/202540802028.

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The tension-compression asymmetry (TCA) in AA2219 alloy exhibits distinct characteristics under varying loading conditions and temperatures. In uniaxial loading at room temperature, compressive stresses consistently exceed tensile stresses due to forming larger GP zones and θ″ phases during compression, which effectively impede dislocation motion. However, at elevated temperatures, the strength of the alloy decreases in both tension and compression, with a more pronounced drop under compression. This is attributed to temperature-dependent mechanisms such as dynamic recrystallization, which dom

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Li, Jian, Yaoguang Zhou, Mohammad Rauf Sheikhi, and Selim Gürgen. "Enhanced Compression Properties of Open-Cell Foams Reinforced with Shear-Thickening Fluids and Shear-Stiffening Polymers." Polymers 17, no. 9 (2025): 1218. https://doi.org/10.3390/polym17091218.

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Open-cell PU foams have a wide range of industrial applications due to their excellent cushioning, impact protection, packaging, thermal insulation, and sound reduction benefits. The foams absorb impact energy while deforming under compressing and are ideal for applications with severe and repeated loading conditions. Enhancing and improving their compressive durability is a vital area of ongoing research. We investigated the effect of incorporating shear-stiffening polymers (SSPs) and shear-thickening fluids (STFs) on the compression properties of open-cell foams. Rheological properties of ST

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Htay, Win. "Evaluation of Compression Lines and Aging Effect on Clayey Soils." International Journal of Trend in Scientific Research and Development 2, no. 5 (2018): 2318–24. https://doi.org/10.31142/ijtsrd18348.

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the intrinsic compression lines ICL obtained from this study can be used for studying the compressive behaviour of clayey soils due to aging effect. The results of oedometer tests of undisturbed samples were compared with the corresponding results of recomposed samples at room and high temperature and slurry samples. The values of compression index, Cc and pc pe , where pc is the preconsolidation pressure and pe is the equivalent pressure on the compression curve of slurry 1.5wL sample when the sample yields, of undisturbed samples are different from those of recomposed samples due to the effe

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Coulombel, Bertrand, and Rémy Versace. "Le cerveau produit la cognition ou la cognition produit le cerveau ?" Intellectica. Revue de l'Association pour la Recherche Cognitive 74, no. 1 (2021): 29–49. http://dx.doi.org/10.3406/intel.2021.1984.

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Après avoir défendu que l’un des principes organisateurs fondamentaux de la cognition est de servir l’existence des organismes vivants de manière pragmatique et simplifiée, puis précisé ce qu’implique ce principe organisateur en termes de fonctions et de «design» du système cognitif (modélisation et représentation adaptative du monde et de la vie pour s’interfacer avec, compression de la complexité en amont, narration et prospection amorcés depuis la base sensorielle, ...), nous argumentons qu’une conception neurale de la cognition, bien qu’envisageable et ayant ses intérêts, rend par défaut d

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Sun, Jianting, Xin Zhou, Qi Liang, Zhitao Zuo, and Haisheng Chen. "The Effect of Wet Compression on a Centrifugal Compressor for a Compressed Air Energy Storage System." Energies 12, no. 5 (2019): 906. http://dx.doi.org/10.3390/en12050906.

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There is an urgent demand to reduce compression power consumption in Compressed Air Energy Storage (CAES) systems. Wet compression has been widely used in gas turbines to reduce compressor power consumption and improve thermal efficiency, but this technology has not been applied yet in the CAES field. In this paper, a centrifugal compressor for CAES was numerically studied to investigate the effect of wet compression on compressor and droplet motion. The results showed that wet compression makes the performance curve shift to a high-pressure ratio/efficiency. Meanwhile, wet compression lowers

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Tu, Ruichen, Ning Wei, Yongmao Pei, Yan Liu, Fengguo Zhang, and Dongsheng Zhang. "The Effect of Compression on the Void Coalescence under Strong Dynamic Loading." Advances in Materials Science and Engineering 2022 (February 28, 2022): 1–11. http://dx.doi.org/10.1155/2022/9990161.

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The void coalescence under strong dynamic loading is a significant spallation process for ductile metals. Since the spallation is basically dominated by tension waves, most void coalescence studies have focused on the tension effect. However, it is known that in spallation, the material initially undergoes a strong compression wave, and then an irreversible deformation is produced by the compression wave inside the material. Therefore, in this paper, the effect of compression on the void coalescence is investigated using the molecular dynamics (MD) simulation. It was found that as the compress

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K., Gopalakrishnan. "A Study on Properties of Modified Rotor Spun Yarn." International Journal of Trend in Scientific Research and Development 2, no. 5 (2018): 653–58. https://doi.org/10.31142/ijtsrd15913.

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Fibers due to their large length diameter ratio are the most effective materials in supporting tensile loads still. Many textile applications do introduce fiber compressions either in a simple form or under complex loading conditions. The majority of these compressive loadings are directed laterally across the fiber axis like compression of fibrous assembly during draftee. Compression occurring to fabric during calendaring and embossing treatments etc. A special pre compression apparatus was fabricated and mounted before the entry of fibrous strand into opening roller of rotor spinning frame.

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Aji Suryadi, Yanuar, and Gunawan. "Compressor Piping Design Effect on Vibration Data." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 88, no. 1 (2021): 94–108. http://dx.doi.org/10.37934/arfmts.88.1.94108.

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One of the systems for oil and gas production supports is the nitrogen compression system. Problem found that condition of the compressor has high vibration with the maximum overall the first compressor is 9,813 mm / s RMS, the second compressor is 7,439 mm / s RMS, the third compressor is 7,430 mm / s RMS, the fourth compressor is 13.47 mm / s RMS, the fifth compressor is 13,220 mm / s RMS, and sixth compressor already damaged. This research will discuss the nitrogen compression process in terms of the characteristics of the output fluid flow from the compressor using computational fluid dyna

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Gindl, W. "Comparing Mechanical Properties of Normal and Compression Wood in Norway Spruce: The Role of Lignin in Compression Parallel to the Grain." Holzforschung 56, no. 4 (2002): 395–401. http://dx.doi.org/10.1515/hf.2002.062.

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Summary Cell-wall lignin content and composition, as well as microfibril angle of normal and compression wood samples were determined prior to mechanical testing in compression parallel to the grain. No effect of increased lignin content on the Young's modulus in compression wood was discernible because of the dominating influence of microfibril angle. In contrast, compressive strength of compression wood was not negatively affected by the high microfibril angle. It is proposed that the observed high lignification in compression wood increases the resistance of the cell walls to compression fa

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Zamfirescu, Calin. "MODELING AND OPTIMIZATION OF AN AMMONIA-WATER COMPRESSION-RESORPTION HEAT PUMPS WITH WET COMPRESSION." Transactions of the Canadian Society for Mechanical Engineering 33, no. 1 (2009): 75–88. http://dx.doi.org/10.1139/tcsme-2009-0008.

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Wet ammonia-water compression-resorption heat pumps constitute an attractive alternative to the commonly known heat pumps based on Osenbrück cycle because they eliminate the necessity of oil-liquid refrigerant separation. In this respect, a special designed oil-free compressor operating under wet (two-phase) conditions equips the heat pump. The compressor is lubricated by the liquid refrigerant which is carried-out while compressing the vapor. The thermodynamic cycle is located completely inside the two-phase region. In this paper are demonstrated two procedures to optimize the design for COP

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Jee, Yong Ju, and Stephen R. Swanson. "Effect of State of Stress on Compression Failure in Carbon/Epoxy Laminates." Journal of Engineering Materials and Technology 117, no. 3 (1995): 347–50. http://dx.doi.org/10.1115/1.2804550.

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Compression loadings in thick composites can in some cases lead to three-dimensional states of stress with a compressive mean stress. A model is developed in the present work that attempts to incorporate this compressive mean stress into a prediction for compression strength of carbon/epoxy fiber composites. The model assumes that the fibers have an initial misalignment, and that composite failure occurs when the fiber-matrix bond strength is exceeded. Literature values for the effect of pressure on bond strength are included. Comparisons with experimental data support the predicted increase i

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Qiu, Tian, and Lihong Liang. "Size effect on the compressive mechanical properties of pearl with “brick-mortar” structure." Journal of Physics: Conference Series 2519, no. 1 (2023): 012027. http://dx.doi.org/10.1088/1742-6596/2519/1/012027.

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Abstract The size dependence of four different diameters of pearls with “brick-mortar” structure was studied by uniaxial compression experiments. The results show that the failure of pearls with different diameters under the compressive load is not complete brittleness, but has a certain toughness. The maximum failure load and compressive strength of pearls cannot be considered as constants, which have a significant size dependence. The maximum failure load increases with the increase of pearl diameter, and the compressive strength decreases with the increase of pearl diameter. In addition, th

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Stuby, Loric, Laurent Jampen, Julien Sierro, et al. "Effect on Chest Compression Fraction of Continuous Manual Compressions with Asynchronous Ventilations Using an i-gel® versus 30:2 Approach during Simulated Out-of-Hospital Cardiac Arrest: Protocol for a Manikin Multicenter Randomized Controlled Trial." Healthcare 9, no. 3 (2021): 354. http://dx.doi.org/10.3390/healthcare9030354.

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The optimal airway management strategy during cardiopulmonary resuscitation is uncertain. In the case of out-of-hospital cardiac arrest, a high chest compression fraction is paramount to obtain the return of spontaneous circulation and improve survival and neurological outcomes. To improve this fraction, providing continuous chest compressions should be more effective than using the conventional 30:2 ratio. Airway management should, however, be adapted, since face-mask ventilation can hardly be carried out while continuous compressions are administered. The early insertion of a supraglottic de

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Shin, So-Yeon. "Relationship between Hand Force and Chest Compression in Manikin Study." Fire Science and Engineering 34, no. 5 (2020): 93–97. http://dx.doi.org/10.7731/kifse.5f67ca03.

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A C-shaped bend is prevalent in long, thin fingers when administering the two-finger compression technique in infant cardiac arrest, making vertical chest compressions difficult. This study was a mannequin experiment, which investigated the effect of grip and back muscle strengths on the outcome of infant chest compressions. Twenty 4th year paramedicine students who had completed 15 weeks of cardiopulmonary resuscitation (CPR) training were recruited as subjects in this study. The results demonstrated greater grip strength in men than in women. Additionally, grip strength, height, and sex were

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AKYOL, Burak, Mustafa GÜDEN, and Subhan NAMAZOV. "EXPERIMENTAL INVESTIGATION OF THE EFFECT OF STRAIN RATE ON THE CRUSHING STRENGTH OF A CELLULAR CONCRETE." Machine Science Journal 1, no. 1 (2023): 4–21. http://dx.doi.org/10.61413/ftxi2310.

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The strain rate dependent compressive strength of an autoclaved aerated concrete (AAC) having a density of 600 kg m-3 was experimentally investigated between quasi-static and high strain rates (2x10-3-~4150 s-1) through quasi-static and dynamic compression, confined compression and indentation tests. High strain rate equilibrium and direct impact non-equilibrium compression tests in conjunction with the high strain rate confined compression and indentation tests were conducted in a compression Split Hopkinson Pressure Bar. The experimental results showed two different regions of the compressiv

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Narloch, Piotr, Piotr Woyciechowski, Jakub Kotowski, Ireneusz Gawriuczenkow, and Emilia Wójcik. "The Effect of Soil Mineral Composition on the Compressive Strength of Cement Stabilized Rammed Earth." Materials 13, no. 2 (2020): 324. http://dx.doi.org/10.3390/ma13020324.

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Cemented stabilized rammed earth (CSRE) is a building material used to build load bearing walls from locally available soil. The article analyzes the influence of soil mineral composition on CSRE compressive strength. Compression tests of CSRE samples of various mineral compositions, but the same particle size distribution, water content, and cement content were conducted. Based on the compression strength results and analyzed SEM images, it was observed that even small changes in the mineral composition significantly affected the CSRE compressive strength. From the comparison of CSRE compress

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G., Gnanauthayan, Rengasamy R.S., and Vijayakumar Kothari. "Heat insulation characteristics of multi-layer nonwovens." Research Journal of Textile and Apparel 22, no. 2 (2018): 94–108. http://dx.doi.org/10.1108/rjta-06-2017-0028.

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Purpose This paper aims to deal with the thermal resistance of multilayer nonwovens. The effect of fibre denier, cross-sectional shape and positioning within the layers were analysed with respect to the thermal resistance. Moreover, effect of compression on thermal resistance of the multilayer nonwoven structure have also be studied. Design/methodology/approach The study involves multiple layering of thermal bonded nonwoven webs and the effect of fibre denier and positioning of different nonwovens from the hot plate. To avoid the increase in thermal resistance because of the air gaps between l

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Wu, T. T., and W. H. Hsieh. "Compression Processes and Performance Analysis of a High-Pressure Reciprocating Gas Compressor." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 210, no. 2 (1996): 153–65. http://dx.doi.org/10.1243/pime_proc_1996_210_182_02.

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Compression processes and compressor performance in a two-stage 41.34 MPa (6000 lb/in2) reciprocating gas compressor were investigated by transient multi-dimensional and transient global thermodynamic models. The transient multi-dimensional model was adopted to predict the two-dimensional compression processes in the second-stage cylinder of the high-pressure reciprocating gas compressor. Calculated results showed no significant temperature gradients anywhere in the compressor cylinder except near the wall, throughout one complete compressor cycle. On the other hand, the calculated velocity fi

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Xu, Xingyuan, Shaoping Wang, Shangyu Wang, and Guiling Liu. "Mathematical Model of Blood Circulation with Compression of the Prototype’s Mechanical CPR Waveform." Bioengineering 9, no. 12 (2022): 802. http://dx.doi.org/10.3390/bioengineering9120802.

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The waveform of chest compressions directly affects the blood circulation of patients with cardiac arrest. Currently, few pieces of research have focused on the influence of the cardiopulmonary resuscitation (CPR) device’s mechanical waveform on blood circulation. This study investigates the effect of the mechanical waveform from a novel CPR prototype on blood circulation and explores the optimal compression parameters of the mechanical waveform to optimize blood circulation. A novel CPR prototype was designed and built to establish a kinetic model during compressions. The prototype’s mechanic

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