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Journal articles on the topic 'Vibrations non-linéaire de plaque'

Author: Grafiati

Published: 1 February 2025

Last updated: 31 July 2025

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1

Nakai, Kumiko, Hideki Tanaka, Kyoko Fukuzawa, et al. "Effects of Electric-Toothbrush Vibrations on the Expression of Collagen and Non-Collagen Proteins through the Focal Adhesion Kinase Signaling Pathway in Gingival Fibroblasts." Biomolecules 12, no. 6 (2022): 771. http://dx.doi.org/10.3390/biom12060771.

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Electric-toothbrush vibrations, which remove plaque, are transmitted to the gingival connective tissue via epithelial cells. Physical energy affects cell function; however, the effects of electric-toothbrush vibrations on gingival extracellular matrix (ECM) protein expression remain unknown. We aimed to examine the effects of these vibrations on the expression of ECM proteins—type I collagen (col I), type III collagen (col III), elastin, and fibronectin (FN)—using human gingival fibroblasts (HGnFs). HGnFs were seeded for 5 days in a six-well plate with a hydrophilic surface, exposed to electri

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2

Thomas, Olivier, Liviu Nicu, and Cyril Touzé. "Flambage et vibrations non-linéaires d'une plaque stratifiée piézoélectrique. Application à un capteur de masse MEMS." Mécanique & Industries 10, no. 3-4 (2009): 311–16. http://dx.doi.org/10.1051/meca/2009057.

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3

MacRitchie, Neil, Gianluca Grassia, Jonathan Noonan, Paul Garside, Duncan Graham, and Pasquale Maffia. "Molecular imaging of atherosclerosis: spotlight on Raman spectroscopy and surface-enhanced Raman scattering." Heart 104, no. 6 (2017): 460–67. http://dx.doi.org/10.1136/heartjnl-2017-311447.

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To accurately predict atherosclerotic plaque progression, a detailed phenotype of the lesion at the molecular level is required. Here, we assess the respective merits and limitations of molecular imaging tools. Clinical imaging includes contrast-enhanced ultrasound, an inexpensive and non-toxic technique but with poor sensitivity. CT benefits from high spatial resolution but poor sensitivity coupled with an increasing radiation burden that limits multiplexing. Despite high sensitivity, positron emission tomography and single-photon emission tomography have disadvantages when applied to multipl

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4

Cimetière, Alain, Aziz Hamdouni, and Olivier Millet. "Le modèle linéaire usuel de plaque déduit de l'élasticité non linéaire tridimensionnelle." Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Chemistry-Astronomy 326, no. 3 (1998): 159–62. http://dx.doi.org/10.1016/s1251-8069(99)89002-2.

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5

WATZKY, A. "VIBRATIONS LIBRES DES CORDES EN RÉGIME NON-LINÉAIRE : MODÈLE BIDIMENSIONNEL." Le Journal de Physique Colloques 51, no. C2 (1990): C2–857—C2–860. http://dx.doi.org/10.1051/jphyscol:19902199.

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6

Rahmani, Leila. "Conditions aux limites approchées pour une plaque mince non linéaire." Comptes Rendus Mathematique 343, no. 1 (2006): 57–62. http://dx.doi.org/10.1016/j.crma.2006.04.013.

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7

Millet, Olivier, Aziz Hamdouni, and Alain Cimetière. "Justification du modèle bidimensionnel non linéaire de plaque par développement asymptotique des équations d'équilibre." Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Chemistry-Astronomy 324, no. 6 (1997): 349–54. http://dx.doi.org/10.1016/s1251-8069(99)80045-1.

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8

Himpens, F. X., P. Aguettaz, C. Gautier, J. P. Pruvo, and X. Leclerc. "Quantification de la néovascularisation intra-plaque par échographie non linéaire avec injection d’un agent de contraste échographique : une nouvelle approche de la plaque vulnérable." Journal of Neuroradiology 39, no. 1 (2012): 41. http://dx.doi.org/10.1016/j.neurad.2012.01.123.

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9

Daya, El Mostafa, Lahcen Azrar, and Michel Potier-Ferry. "Modélisation par éléments finis des vibrations non-linéaires des plaques sandwich viscoélastiques." Mécanique & Industries 6, no. 1 (2005): 13–20. http://dx.doi.org/10.1051/meca:2005002.

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10

Azeem, Muhammad, Ambreen Afzal, Saqib Ali Jawa, Arfan Ul Haq, Mahwish Khan, and Husnain Akram. "Effectiveness of electric toothbrush as vibration method on orthodontic tooth movement: a split-mouth study." Dental Press Journal of Orthodontics 24, no. 2 (2019): 49–55. http://dx.doi.org/10.1590/2177-6709.24.2.049-055.oar.

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Abstract Objective: To investigate the effects of application of vibratory stimuli, using an electric toothbrush, on the rate of orthodontic tooth movement during maxillary canine retraction. Methods: A split-mouth study was conducted in 28 subjects (mean age = 20.8 years; ranging from 18 to 24 years) whose bilateral maxillary first premolars were extracted with subsequent canine retraction. On the Vibration side, light force (100 g) was applied to the canine for 90 days, in combination with vibratory stimuli provided by an electric toothbrush; only orthodontic force was applied to the canine

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11

Onwuka, D. O., C. A. Ohia, J. I. Arimanwa, and S. U. Onwuka. "Investigation of the Dynamic Behaviour of Functionally Graded Rectangular Plates Resting on Winkler Foundation." International Journal of Recent Research in Civil and Mechanical Engineering (IJRRCME) 11, no. 1 (2024): 1–18. https://doi.org/10.5281/zenodo.10948655.

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<strong>Abstract:</strong> This study assesses the vibration characteristics of functionally graded rectangular plates resting on Winkler elastic foundation. Integral calculus has been applied to the beam analogy method for the evaluation of the non-dimensional frequency parameters of isotropic functionally graded (FG) rectangular plates resting on Winkler elastic foundation. The fundamental assumptions of linear, elastic, small-deflection theory of bending for thin plates due to Kirchhoff are taken into consideration. Using direct integration, characteristic orthogonal polynomials (COPs) shap

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12

Li, Shaowei, Ziyi Luo, Renlong Zhang та ін. "Distinguishing Amyloid β-Protein in a Mouse Model of Alzheimer’s Disease by Label-Free Vibrational Imaging". Biosensors 11, № 10 (2021): 365. http://dx.doi.org/10.3390/bios11100365.

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Due to the increase in the average age of humans, Alzheimer’s disease (AD) has become one of the disorders with the highest incidence worldwide. Abnormal amyloid β protein (Aβ) accumulation is believed to be the most common cause of AD. Therefore, distinguishing the lesion areas can provide clues for AD diagnosis. Here, we present an optical spectroscopy and imaging approach based on coherent anti-Stokes Raman scattering (CARS). Label-free vibrational imaging of Aβ in a mouse model of AD was performed to distinguish the lesion areas by studying the spectra of regions with and without Aβ plaque

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13

Ohia, C. A., D. O. Onwuka, C. E. Okere, and S. U. Onwuka. "Vibration Characteristics of Functionally Graded Fixed Thin Rectangular Plate on Winkler Elastic Foundation Using Beam Analogy Method." International Journal of Civil and Structural Engineering Research 12, no. 1 (2024): 10–28. https://doi.org/10.5281/zenodo.10948917.

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<strong>Abstract:</strong> In this study, integral calculus has been applied to the beam analogy method for the evaluation of the non-dimensional frequency parameters of isotropic functionally graded (FG) rectangular plates resting on Winkler elastic foundation. The fundamental assumptions of linear, elastic, small-deflection theory of bending for thin plates due to Kirchhoff are taken into consideration. Using direct integration, characteristic orthogonal polynomials (COPs) shape function for all-round clamped (CCCC) plate is formulated. The effect of aspect ratios on the natural frequency of

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14

Yang, Suo, Praise Noah Johnson, and Taaresh Sanjeev Taneja. "(Invited) Plasma-Assisted Ammonia Combustion and Flare Gas Reforming to Enhance Reactivity and Control Emission." ECS Meeting Abstracts MA2023-01, no. 20 (2023): 1496. http://dx.doi.org/10.1149/ma2023-01201496mtgabs.

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Increasing emphasis on the de-carbonization of energy production has led researchers to consider carbon-free, renewable, and green fuels such as hydrogen (H2) and ammonia (NH3). While H2 suffers from the major challenges of production difficulties, transportation, and storage, NH3 is plagued with challenges of low flame speeds causing unstable flames, high autoignition temperatures resulting in longer ignition delays, narrow flammability limits, and higher levels of NOx emission. Among the different solutions to overcome these challenges of NH3 combustion, non-equilibrium plasma-based igniters

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15

Röhr, Dominik, Baayla D. C. Boon, Martin Schuler та ін. "Label-free vibrational imaging of different Aβ plaque types in Alzheimer’s disease reveals sequential events in plaque development". Acta Neuropathologica Communications 8, № 1 (2020). http://dx.doi.org/10.1186/s40478-020-01091-5.

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AbstractThe neuropathology of Alzheimer’s disease (AD) is characterized by hyperphosphorylated tau neurofibrillary tangles (NFTs) and amyloid-beta (Aβ) plaques. Aβ plaques are hypothesized to follow a development sequence starting with diffuse plaques, which evolve into more compact plaques and finally mature into the classic cored plaque type. A better molecular understanding of Aβ pathology is crucial, as the role of Aβ plaques in AD pathogenesis is under debate. Here, we studied the deposition and fibrillation of Aβ in different plaque types with label-free infrared and Raman imaging. Fouri

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16

Kunchur, Natasha N., and Leila B. Mostaço-Guidolin. "Development of an image classification pipeline for atherosclerotic plaques assessment using supervised machine learning." BMC Bioinformatics 23, no. 1 (2022). http://dx.doi.org/10.1186/s12859-022-05059-1.

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Abstract Background During atherosclerosis, the narrowing of the arterial lumen is observed through the accumulation of bio compounds and the formation of plaque within artery walls. A non-linear optical imaging modality (NLOM), coherent anti-stokes Raman scattering (CARS) microscopy, can be used to image lipid-rich structures commonly found in atherosclerotic plaques. By matching the lipid’s molecular vibrational frequencies (CH bonds), it is possible to map the accumulation of lipid-rich structures without the need for exogenous labelling and/or processing of the samples. CARS allows for the

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17

Oroszi, Tamas, Eva Geerts, Reuben Rajadhyaksha, Csaba Nyakas, Marieke J. G. van Heuvelen, and Eddy A. van der Zee. "Whole-body vibration ameliorates glial pathological changes in the hippocampus of hAPP transgenic mice, but does not affect plaque load." Behavioral and Brain Functions 19, no. 1 (2023). http://dx.doi.org/10.1186/s12993-023-00208-9.

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Abstract Background Alzheimer’s disease (AD) is the core cause of dementia in elderly populations. One of the main hallmarks of AD is extracellular amyloid beta (Aβ) accumulation (APP-pathology) associated with glial-mediated neuroinflammation. Whole-Body Vibration (WBV) is a passive form of exercise, but its effects on AD pathology are still unknown. Methods Five months old male J20 mice (n = 26) and their wild type (WT) littermates (n = 24) were used to investigate the effect of WBV on amyloid pathology and the healthy brain. Both J20 and WT mice underwent WBV on a vibration platform or pseu

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18

Nyamsi, Madeleine. "Ajustement des données pluviométriques à l'aide des splines plaque mince de lissage: Application à la pluviométrie Camerounaise." Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées Volume 22 - 2016-2018 (August 21, 2018). http://dx.doi.org/10.46298/arima.3996.

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In this paper we present a numerical method for drawing a rainfall map. We use thin plate ajustement spline to fit a smooth surface through meteorological data such as rainfall observations. The determination of the ajustement parameters gives rise to the minimization of a multidimensional nonlinear function whose evaluation is very computational intensive. We propose an heuristic approach for the calculation of the ajustement parameters which is cost effective. The proposed method is tested on a set of rainfall observations gathered by the department of national meteorology in Cameroun. Dans

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19

T., H. Young, J. Huang S., and S. Chiu Y. "Dynamic Stability of Axially Moving Viscoelastic Plates under Non-Uniform In-Plane Edge Excitations." July 1, 2015. https://doi.org/10.5281/zenodo.1107830.

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This paper investigates the parametric stability of an axially moving web subjected to non-uniform in-plane edge excitations on two opposite, simply-supported edges. The web is modeled as a viscoelastic plate whose constitutive relation obeys the Kelvin-Voigt model, and the in-plane edge excitations are expressed as the sum of a static tension and a periodical perturbation. Due to the in-plane edge excitations, the moving plate may bring about parametric instability under certain situations. First, the in-plane stresses of the plate due to the non-uniform edge excitations are determined by sol

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20

Fokam, Christian, Franklin Kanko, Rolland Djomi, Bienvenu Kenmeugne, Kanmogne Abraham, and Guy Ntamack. "Implantation by an implicit approach of an elastoplastic behaviour law in the finite element cast3m code." Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées Volume 37 - 2022 (August 30, 2022). http://dx.doi.org/10.46298/arima.7632.

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soumission à Episciences This paper is dedicated to the implementation of a law of mechanical behavior in the finite element software Cast3M using an open source code generator named Mfront. To do so, an elastoplastic behaviour model has been chosen from existing laws in the literature. Following an implicit discretization, a hardware library corresponding to the isotropic and kinematic strain-hardening model is generated using Mfront. The UMAT computer interface is used to build the library in Cast3M. A validation of the approach has been carried out by comparing the numerical results obtaine

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21

Peković, Ognjen, Aleksandar Simonović, Jelena Svorcan, Srd an Trivković, and Slobodan Stupar. "Free vibration and buckling analysis of higher order laminated composite plates using the isogeometric approach." Journal of Theoretical and Applied Mechanics 53, no. 2 (2017). https://doi.org/10.15632/jtam-pl.53.2.453.

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This research paper presents a higher order isogeometric laminated composite plate finite element formulation. The isogeometric formulation is based on NURBS (non-uniform rational B-splines) basis functions of varying degree. Plate kinematics is based on the third order shear deformation theory (TSDT) of Reddy in order to avoid shear locking. Free vibration and the buckling response of laminated composite plates are obtained and efficiency of the method is considered. Numerical results with different element order are presented and the obtained results are compared to analytical and convention

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22

Pace, John. "The Yes Men." M/C Journal 6, no. 3 (2003). http://dx.doi.org/10.5204/mcj.2190.

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In a light-speed economy of communication, the only thing that moves faster than information is imagination. And in a time when, more than ever before, information is the currency of global politics, economics, conflict, and conquest what better way to critique and crinkle the global-social than to combine the two - information and imagination - into an hilarious mockery of, and a brief incursion into the vistas of the globalitarian order. This is precisely the reflexive and rhetorical pot-pourri that the group 'the Yes Men' (www.theyesmen.org) have formed. Beginning in 2000, the Yes Men descr

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23

Adey, Peter. "Holding Still: The Private Life of an Air Raid." M/C Journal 12, no. 1 (2009). http://dx.doi.org/10.5204/mcj.112.

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In PilsenTwenty-six Station Road,She climbed to the third floorUp stairs which were all that was leftOf the whole house,She opened her doorFull on to the sky,Stood gaping over the edge.For this was the placeThe world ended.Thenshe locked up carefullylest someone stealSiriusor Aldebaranfrom her kitchen,went back downstairsand settled herselfto waitfor the house to rise againand for her husband to rise from the ashesand for her children’s hands and feet to be stuck back in placeIn the morning they found herstill as stone, sparrows pecking her hands.Five Minutes after the Air Raidby Miroslav Holu

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Subramanian, Shreerekha Pillai. "Malayalee Diaspora in the Age of Satellite Television." M/C Journal 14, no. 2 (2011). http://dx.doi.org/10.5204/mcj.351.

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This article proposes that the growing popularity of reality television in the southernmost state of India, Kerala – disseminated locally and throughout the Indian diaspora – is not the product of an innocuous nostalgia for a fast-disappearing regional identity but rather a spectacular example of an emergent ideology that displaces cultural memory, collective identity, and secular nationalism with new, globalised forms of public sentiment. Further, it is arguable that this g/local media culture also displaces hard-won secular feminist constructions of gender and the contemporary modern “Indian

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