Relevant bibliographies by topics / G-FRCM

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  2. Dissertations / Theses

Academic literature on the topic 'G-FRCM'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "G-FRCM"

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D'Antino, Tommaso, and Carlo Poggi. "Stress Redistribution in Glass Fibers of G-FRCM Composites." Key Engineering Materials 817 (August 2019): 520–27. http://dx.doi.org/10.4028/www.scientific.net/kem.817.520.

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Fiber reinforced cementitious matrix (FRCM) composites are increasingly adopted as a strengthening technique for existing masonry structures. Among the different fibers that can be employed in the reinforcing open-mesh textiles, which are embedded within cement- and lime-based matrices, glass fibers are gaining popularity due to their low price and promising performances observed so far. However, the stress redistribution between the glass fiber filaments within the textile is often uneven, which strongly affects the performance of the FRCM when subjected to external forces. In this paper, the stress redistribution between the glass fiber filaments is studied on the basis of tensile tests on a glass fiber textile left bare and impregnated with organic and inorganic matrices. The parameters studied are the fiber textile tensile strength and elastic modulus. Different systems, including the digital image correlation (DIC) technique, were employed to measure the specimen tensile strain. The results obtained shed light on the tensile strength of the glass textile, which is a key parameter in the design of glass FRCM strengthening.
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Girdwood, Tom, and George Howie. "W. G. Scott-Harden, MB, ChB, FRCP(Ed), FRCR, DMRE(Cantab.)." Clinical Radiology 36, no. 1 (January 1985): 3. http://dx.doi.org/10.1016/s0009-9260(85)80004-0.

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3

Khan, Aftab Ahmed, Leila Perea-Lowery, Abdulaziz Abdullah Al-Khureif, Nawaf Abdulrahman AlMufareh, ElZahraa Eldwakhly, Eija Säilynoja, and Pekka Kalevi Vallittu. "Interfacial Adhesion of a Semi-Interpenetrating Polymer Network-Based Fiber-Reinforced Composite with a High and Low-Gradient Poly(methyl methacrylate) Resin Surface." Polymers 13, no. 3 (January 22, 2021): 352. http://dx.doi.org/10.3390/polym13030352.

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The research aimed to determine the tensile bond strength (TBS) between polymerized intact and ground fiber-reinforced composite (FRC) surfaces. FRC prepregs (a reinforcing fiber pre-impregnated with a semi-interpenetrating polymer network (semi-IPN) resin system; everStick C&B) were divided into two groups: intact FRCs (with a highly PMMA-enriched surface) and ground FRCs (with a low PMMA gradient). Each FRC group was treated with: StickRESIN and G-Multi PRIMER. These groups were further divided into four subgroups based on the application time of the treatment agents: 0.5, 1, 2, and 5 min. Next, a resin luting cement was applied to the FRC substrates on the top of the photo-polymerized treating agent. Thereafter, weight loss, surface microhardness, and TBS were evaluated. Three-factor analysis of variance (p ≤ 0.05) revealed significant differences in the TBS among the FRC groups. The highest TBS was recorded for the intact FRC surface treated with G-Multi PRIMER for 2 min (13.0 ± 1.2 MPa). The monomers and solvents of G-Multi PRIMER showed a time-dependent relationship between treatment time and TBS. They could diffuse into the FRC surface that has a higher PMMA gradient, further resulting in a high TBS between the FRC and resin luting cement.
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4

Connolly, John E. "HARRY H. G. EASTCOTT, FRCS (ENG), LONDON." Transactions of the ... Meeting of the American Surgical Association 128 (2010): 341–42. http://dx.doi.org/10.1097/01.sla.0000391122.56243.f1.

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5

Nld. "A G Palin, BM, BCL, FRCS, FRCSEd." British Journal of Ophthalmology 70, no. 12 (December 1, 1986): 936. http://dx.doi.org/10.1136/bjo.70.12.936.

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6

Davies, Phys. "F. G. M. Ross, MB, BChir., DMRD, FFR, FRCR." Clinical Radiology 51, no. 9 (September 1996): 668. http://dx.doi.org/10.1016/s0009-9260(96)80075-4.

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7

Cook, G. C. "Dr D G James FRCP and the Fellowship of Postgraduate Medicine." Postgraduate Medical Journal 79, no. 928 (February 1, 2003): 101. http://dx.doi.org/10.1136/pmj.79.928.101.

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8

Aghdasi, Parham, and Claudia P. Ostertag. "Green ultra-high performance fiber-reinforced concrete (G-UHP-FRC)." Construction and Building Materials 190 (November 2018): 246–54. http://dx.doi.org/10.1016/j.conbuildmat.2018.09.111.

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9

Drażbo, Aleksandra Alicja, Jerzy Juśkiewicz, Agata Józefiak, and Paweł Konieczka. "The Fermentation Process Improves the Nutritional Value of Rapeseed Cake for Turkeys—Effects on Performance, Gut Bacterial Population and Its Fermentative Activity." Animals 10, no. 9 (September 22, 2020): 1711. http://dx.doi.org/10.3390/ani10091711.

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This experiment investigated the potential inclusion of fermented rapeseed cake (FRC) in turkey diets. The turkeys received diets either not supplemented (C) or supplemented with raw rapeseed cake (RRC) or FRC at 150 g/kg diet. In comparison with RRC, turkeys receiving FRC achieved significantly higher final BW comparable with that noted in the control group. The dietary inclusion of FRC increased the concentrations of propionic and valeric acid in the cecal digesta compared with the control group, and increased the proportion of butyric acid in SCFA profile compared with RRC group. The activities of glycolytic bacterial enzymes in the cecal digesta, were lowest in turkeys fed FRC. Experimental diets did not cause a shift in the relative abundances of the main bacterial phyla or orders in the cecal digesta. FRC increased the abundance of Bacteroidaceae at the family level, but decreased the abundance of Lactobacillus at the genus level compared with birds fed RRC. In conclusion, the dietary inclusion of FRC at 150 g/kg did not compromise bird performance, did not excessively stimulate bacterial activity, and did not cause shifts in the bacterial composition in the cecum. Actually, FCR exerted several beneficial effects that contributed to maintaining gut health in turkeys, which points to its advantage over RRC.
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10

Elliott, A. R., G. K. Prisk, H. J. Guy, and J. B. West. "Lung volumes during sustained microgravity on Spacelab SLS-1." Journal of Applied Physiology 77, no. 4 (October 1, 1994): 2005–14. http://dx.doi.org/10.1152/jappl.1994.77.4.2005.

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Gravity is known to influence the mechanical behavior of the lung and chest wall. However, the effect of sustained microgravity (mu G) on lung volumes has not been reported. Pulmonary function tests were performed by four subjects before, during, and after 9 days of mu G exposure. Ground measurements were made in standing and supine postures. Tests were performed using a bag-in-box-and-flowmeter system and a respiratory mass spectrometer. Measurements included functional residual capacity (FRC), expiratory reserve volume (ERV), residual volume (RV), inspiratory and expiratory vital capacities (IVC and EVC), and tidal volume (VT). Total lung capacity (TLC) was derived from the measured EVC and RV values. With preflight standing values as a comparison, FRC was significantly reduced by 15% (approximately 500 ml) in mu G and 32% in the supine posture. ERV was reduced by 10–20% in mu G and decreased by 64% in the supine posture. RV was significantly reduced by 18% (310 ml) in mu G but did not significantly change in the supine posture compared with standing. IVC and EVC were slightly reduced during the first 24 h of mu G but returned to 1-G standing values within 72 h of mu G exposure. IVC and EVC in the supine posture were significantly reduced by 12% compared with standing. During mu G, VT decreased by 15% (approximately 90 ml), but supine VT was unchanged compared with preflight standing values. TLC decreased by approximately 8% during mu G and in the supine posture compared with preflight standing. The reductions in FRC, ERV, and RV during mu G are probably due to the cranial shift of the diaphragm, an increase in intrathoracic blood volume, and more uniform alveolar expansion.
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Dissertations / Theses on the topic "G-FRCM"

1

De, Nigris Stefano. "Prove cicliche di trazione e aderenza su muretti in laterizio rinforzati con FRCM." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Abstract:
Le tipologie di prova adottate durante i test condotti su campioni FRCM sono state essenzialmente due: prove di trazione e prove di aderenza, svolte impiegando due diverse modalità di applicazione del carico (caricamento monotono e/o ciclico) e due diverse tipologie di rinforzo (una in fibra di carbonio e una in fibra di vetro). Nel corso delle prove di trazione, i risultati migliori sono stati ottenuti per i rinforzi in fibra di carbonio con applicazione del carico di trazione monotona, quindi per la soluzione in cui si è utilizzata la fibra avente le caratteristiche meccaniche migliori; il comportamento di questi materiali è risultato tuttavia peculiare, in quanto lo strato di malta esterno ha mostrato spesso distacchi e perdita di adesione rispetto alla rete bidirezionale di rinforzo, rendendo difficoltosa la misura esterna della deformazione del composito. I rinforzi in fibra di vetro (GFRCM) hanno mostrato risultati inferiori in termini di tensione massima, in accordo con la tipologia di fibra impiegata, ma hanno evidenziato un comportamento caratterizzato si dall’apertura di fessure, ma maggiormente assimilabile ad una schematizzazione trilineare, senza fenomeni evidenti di distacco esterno della matrice prima della rottura. Dalla sperimentazione dei provini mediante prove di aderenza è emerso che, sia nel caso di prove monotone che cicliche, i provini rinforzati con GFRCM hanno mostrato un’efficienza maggiore. La rete in fibra di vetro ha mostrato una aderenza migliore all’interno della matrice cementizia, rispetto alla rete in fibra di carbonio, perché presenta uno speciale trattamento superficiale (appretto) che ne migliora la compatibilità e l’adesione al supporto. I rinforzi GFRCM testati hanno sfruttato al meglio le proprie caratteristiche meccaniche raggiungendo valori di carico maggiori (circa doppi) rispetto ai rinforzi CFRCM.
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