Добірка наукової літератури з теми "Hybrid layer degradation"
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Статті в журналах з теми "Hybrid layer degradation"
Carla Miranda, Gabriela Vieira Silva, Mariáh Damiani Vieira, and Simone Xavier Silva Costa. "Influence of the chlorhexidine application on adhesive interface stability: literature review." RSBO 11, no. 3 (September 30, 2015): 276–85. http://dx.doi.org/10.21726/rsbo.v11i3.866.
Повний текст джерелаLafuente, D. "SEM analysis of hybrid layer degradation after water storage." Dental Materials 26, no. 2 (February 2010): e141-e142. http://dx.doi.org/10.1016/j.dental.2009.11.114.
Повний текст джерелаKim, Seung-Hyun, Dong-Yeon Park, Hyun-Jung Woo, Dong-Soo Lee, Jowoong Ha, and Cheol Song Hwang. "Effects of IrO2/Pt Hybrid Electrodes on the Crystallization and Ferroelectric Performances of Sol-gel-derived Pb(Zr,Ti)O3 Thin Film Capacitors." Journal of Materials Research 17, no. 7 (July 2002): 1735–42. http://dx.doi.org/10.1557/jmr.2002.0257.
Повний текст джерелаChoudhury, Devika, Gopalan Rajaraman, and Shaibal K. Sarkar. "Stability of molecular layer deposited zincone films: experimental and theoretical exploration." RSC Advances 5, no. 38 (2015): 29947–52. http://dx.doi.org/10.1039/c5ra02928g.
Повний текст джерелаDeng, Weikun, Khanh T. P. Nguyen, Christian Gogu, Jérôme Morio, and Kamal Medjaher. "Physics-informed Lightweight Temporal Convolution Networks for Fault Prognostics Associated to Bearing Stiffness Degradation." PHM Society European Conference 7, no. 1 (June 29, 2022): 118–25. http://dx.doi.org/10.36001/phme.2022.v7i1.3365.
Повний текст джерелаFryń, Patryk, Sebastian Lalik, Krzysztof A. Bogdanowicz, Natalia Górska, Agnieszka Iwan, and Monika Marzec. "Degradation of hybrid material l,d-PLA : 5CB : SWCN under the influence of neutral, acidic, and alkaline environments." RSC Advances 13, no. 6 (2023): 3792–806. http://dx.doi.org/10.1039/d2ra05350k.
Повний текст джерелаAbdulrahim, Sumayya M., Zubair Ahmad, Jolly Bhadra, and Noora Jabor Al-Thani. "Long-Term Stability Analysis of 3D and 2D/3D Hybrid Perovskite Solar Cells Using Electrochemical Impedance Spectroscopy." Molecules 25, no. 24 (December 8, 2020): 5794. http://dx.doi.org/10.3390/molecules25245794.
Повний текст джерелаCarrilho, M. R. O., R. M. Carvalho, M. F. de Goes, V. di Hipólito, S. Geraldeli, F. R. Tay, D. H. Pashley, and L. Tjäderhane. "Chlorhexidine Preserves Dentin Bond in vitro." Journal of Dental Research 86, no. 1 (January 2007): 90–94. http://dx.doi.org/10.1177/154405910708600115.
Повний текст джерелаTjäderhane, Leo, Fabio D. Nascimento, Lorenzo Breschi, Annalisa Mazzoni, Ivarne L. S. Tersariol, Saulo Geraldeli, Arzu Tezvergil-Mutluay, et al. "Strategies to prevent hydrolytic degradation of the hybrid layer—A review." Dental Materials 29, no. 10 (October 2013): 999–1011. http://dx.doi.org/10.1016/j.dental.2013.07.016.
Повний текст джерелаTai, Edward Guangqing, Ryan Taoran Wang, Jason Yuanzhe Chen, and Gu Xu. "A Water-Stable Organic-Inorganic Hybrid Perovskite for Solar Cells by Inorganic Passivation." Crystals 9, no. 2 (February 4, 2019): 83. http://dx.doi.org/10.3390/cryst9020083.
Повний текст джерелаДисертації з теми "Hybrid layer degradation"
Frassetto, Andrea. "Nanostructural analysis of the adhesive interface in dentistry." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9969.
Повний текст джерелаThe subject of this thesis is the stability of the adhesive interface in dentistry. Success in adhesive dentistry means long lasting restorations. However, there is substantial evidence that this ideal objective is not achieved. Current research in this field aims at increasing the resin-dentin bond durability. This doctoral research examines the fundamental processes responsible for the aging mechanisms involved in the degradation of resin-bonded interfaces, as well as some potential approaches to prevent and counteract this degradation. Resin-dentin bond degradation is a complex process that is not completely understood, involving the hydrolysis of both the resin and the collagen component of the hybrid layer. The hydrophilic and acidic characteristics of current dentin adhesives have made hybrid layers highly prone to water sorption, which causes polymer degradation and results in decreased resin-dentin bond strength over time. These unstable polymers inside the hybrid layer may result in an incomplete encapsulation of collagen fibers, which become vulnerable to mechanical and hydrolytical fatigue, as well as degradation by host-derived proteases with collagenolytic activity. These enzymes, such as matrix metalloproteinases (MMPs) and cysteine cathepsins, have a crucial role in the degradation of type I collagen, the organic component of the hybrid layer. The first part of this thesis aims to review the current knowledge regarding adhesion to the tooth substrate (Chapter 1), focusing on the fundamental processes that are responsible for the degradation of the adhesive interface (Chapter 2). Since the permeability of adhesives to water is particularly evident in simplified adhesive formulations, the research activity was focused on self-etch and universal adhesive systems’ behavior. Thus, the research study reported in Chapter 3 showed that the bond strength and nanoleakage expression of two-step and one-step self-etch tested bonding systems were affected by storage for 6 month and 1 year in artificial saliva. Although it is generally accepted that the permeability of adhesives to water is particularly evident in simplified adhesive formulations, the stability over time was not related to the number of steps of bonding systems, but to their chemical formulations. The performance of a new universal (or multi-mode) adhesive system through storage in artificial saliva was also investigated. The original results presented in Chapter 4 found that improved bonding effectiveness of the tested universal adhesive system on dentin was obtained when the adhesive was applied with the self-etch approach. Indeed, the etch-and-rinse approaches tested (both on wet and dry dentin) resulted in immediate bond strength comparable to the self-etch mode but expedited long-term aging resulted in reduced bond strength and increased nanoleakage expression, irrespective of dentin wetness. Moreover, the results of the zymographic analysis showed evident changes in dentinal MMP-2 and -9 enzyme activities after the application of the tested adhesives, revealing differences in the extent of enzyme activation. These findings exhibit that the activation of endogenous MMPs is not related to the adhesive system or the strategy employed. Thus, regardless of the approach and the material used in bonding procedures, a stable and durable bond is not achieved. Therefore, experimental strategies that aim to enhance the adhesive interface, particularly improving the durability of the resin-dentin bond strength by inhibiting intrinsic collagenolytic activity and increasing the resistance of dentin collagen matrix to enzymatic degradation are needed. The last part of the thesis is focused on both the strategies to inhibit the proteolytic and collagenolytic activity of the endogenous proteases and the methods to increase the mechanical strength of collagen network and its resistance to enzymatic degradation (Chapter 5). Chlorhexidine (CHX) has been used as a non-specific MMP inhibitor to prevent degradation of hybrid layers. However, CHX is water-soluble and may leach out of hybrid layers, compromising its long-term anti-MMP effectiveness. An entirely different approach is to treat the acid-etched dentin containing activated matrix-bound MMPs with cross-linking agents that inactivate the catalytic site of proteases. In particular, the ability of a cross-linker agent, 1-ethyl-3-(3-dimethylamino-propyl) carbodiimide (EDC), to prevent collagen degradation was evaluated under occlusal cycle loading. Previous research successfully utilized EDC to increase the durability of resin-dentin bonds by increasing the mechanical properties of the collagen matrix; however, the 1 to 4 hrs required for that procedure was clinically unacceptable. For this reason, the purpose of the last part of the research, presented in Chapter 6, was to evaluate the ability of 0.5 M EDC short-time (1 min) pre-treatment to improve the stability of demineralized dentin collagen matrices by quantifying the release of telopeptide fragments over time. The results showed that EDC application for 1 min may be a clinically relevant and effective means for stabilizing the collagen network not only by strengthening the fibrils, but also by reducing the enzymatic degradation rate. Thus, dentin collagen reinforcement and strengthening through EDC cross-linking might be of importance to improve the bond strength and structural integrity of the resin-dentin interface over time against the enzymatic and hydrolytic degradation.
La tesi qui presentata riguarda la stabilità dell'interfaccia adesiva in odontoiatria. Il successo delle moderne terapie conservative è rappresentato dalla longevità dei restauri adesivi. Tuttavia, vi è una sostanziale evidenza che questo obiettivo ideale non sia raggiunto. La stabilità dell’interfaccia adesiva dipende dalla formazione di uno strato ibrido, compatto e omogeneo, durante l’impregnazione del substrato dentinale da parte dei monomeri adesivi. Poiché lo strato ibrido rappresenta un’entità complessa, in cui interagiscono componenti biologiche diverse (matrice dentinale collagenica e cristalli d’idrossiapatite residui) e non (monomeri resinosi e solventi), i fenomeni d’invecchiamento interessano in maniera sinergica sia la porzione resinosa che quella dentale. L’articolato processo che porta alla degradazione dell’interfaccia adesiva coinvolge infatti la componente resinosa, attraverso l’idrolisi della resina negli spazi interfibrillari, e quella organica, attraverso la disorganizzazione delle fibre collagene dovuta ad un incompleto incapsulamento delle stesse, nonché alla degradazione da parte di proteasi intrinseche con attività collagenolitica. È stato dimostrato come questi enzimi, le metalloproteinasi della matrice (MMP) e le catepsine, abbiano un ruolo cruciale nella degradazione del collagene di tipo I, la principale componente organica dello strato ibrido. Inoltre le caratteristiche idrofile e acide degli attuali sistemi adesivi dentinali hanno reso lo strato ibrido molto suscettibile all'assorbimento di acqua, comportando, attraverso l’idrolisi, la degradazione dello stesso e andando così a contribuire ad una diminuzione della forza di legame nel tempo. Attualmente l’interesse della comunità scientifica mira ad aumentare la durata del legame adesivo con il substrato dentinale. Dopo un’attenta analisi delle attuali conoscenze riguardanti adesione al substrato dentale (Capitolo 1), la prima parte della tesi si propone di valutare i processi fondamentali che sono responsabili della degradazione dell'interfaccia adesiva (Capitolo 2). Poiché la permeabilità all’acqua degli adesivi è particolarmente evidente nelle formulazioni semplificate, l'attività di ricerca si è concentrata sull’analisi del comportamento dei sistemi adesivi self-etch e dei recenti sistemi adesivi universali. I risultati riportati nel Capitolo 3 ha dimostrato come la forza di legame e l’espressione del nanoleakage dei sistemi adesivi self-etch two-step e one-step testati sia negativamente influenzata dall’invecchiamento in saliva artificiale per 6 mesi e 1 anno. Sebbene sia generalmente accettato che la permeabilità degli adesivi all'acqua è particolarmente evidente in formulazioni di adesivi semplificati, la stabilità nel tempo non è stata correlata al numero di passaggi dei sistemi adesivi, bensì alle loro composizioni chimiche. Sono state in seguito analizzate anche le prestazioni di un nuovo sistema adesivo universale (o multimodale). I risultati presentati nel Capitolo 4 hanno stabilito una migliore efficienza adesiva del sistema universale, testato sul substrato dentinale, quando l'adesivo è stato applicato con l'approccio self-etch. Infatti, la tecnica etch-and-rinse, testata sia su dentina umida che secca, ha comportato una forza di adesione immediata paragonabile alla modalità self-etch, ma a tempi di invecchiamento incrementali si è evidenziata una diminuzione della forza di legame e una maggiore espressione del nanoleakage, a prescindere dalla condizione di umidità dentinale. Inoltre, i risultati dell'analisi zimografica hanno mostrato evidenti variazioni dell’attività enzimatica delle metalloproteinasi MMP-2 e -9 dopo l'applicazione degli adesivi testati. Questi risultati dimostrano come l'attivazione delle MMP endogene non sia correlata al sistema adesivo o alla strategia adottata. Ne evince che, indipendentemente dal metodo e dal materiale utilizzato nelle procedure adesive, non si è in grado di stabilire un legame affidabile e duraturo. Pertanto si avverte l’esigenza di strategie sperimentali che mirino a migliorare la stabilità dell’interfaccia adesiva, in particolare incrementando la durata della forza di legame in dentina inibendo l'attività collagenolitica intrinseca e aumentando la resistenza del collagene alla degradazione enzimatica. L'ultima parte della tesi è focalizzata quindi sulle strategie per inibire l'attività proteolitica e collagenolitica delle proteasi endogene e sui metodi per aumentare la resistenza meccanica del collagene alla degradazione enzimatica (Capitolo 5). Un potente agente antibatterico, la clorexidina (CHX), è stato usato come inibitore non specifico delle MMP al fine di impedire la degradazione dello strato ibrido. Tuttavia la CHX, essendo solubile in acqua, può dissolversi nello strato ibrido, compromettendo la sua efficacia anti-MMP a lungo termine. Un approccio completamente diverso è quello di trattare la dentina mordenzata con agenti cross-linker. In particolare, simulando il carico occlusale, è stata valutata la capacità di un agente cross-linker, l’1-etil-3-(3-dimetilammino-propil) carbodiimmide (EDC), per prevenire la degradazione del collagene. Precedenti ricerche hanno utilizzato con successo l’EDC con lo scopo di aumentare la durata dell’interfaccia adesiva, aumentando le proprietà meccaniche della matrice di collagene; tuttavia, il tempo necessario (da 1 a 4 ore) richiesto per tali procedure è clinicamente inaccettabile. Per questo motivo, lo scopo dell’ultima parte della ricerca, presentata nel Capitolo 6, è stato quello di valutare la capacità di 0,5 M EDC nel breve periodo di pretrattamento (1 min), andando a quantificare il rilascio di frammenti di telopeptidi di collagene nel corso del tempo. I risultati hanno dimostrato che l'applicazione di EDC per 1 min può essere un approccio clinicamente rilevante ed efficace nello stabilizzare il collagene, non solo rafforzando le fibrille, ma anche riducendo la velocità di degradazione enzimatica. Di conseguenza, l’utilizzo di questo cross-linker può garantire una valida strategia per migliorare la forza di legame e l'integrità strutturale dell'interfaccia adesiva nel tempo contro l’attività enzimatica intrinseca del collagene e la degradazione idrolitica.
XXVI Ciclo
1985
Manzke, Marietta Simone. "Physikochemische und bioaktive Eigenschaften von mit Methacryl-funktionalisierten Silica-Nanopartikeln modifizierten experimentellen Adhäsiven." Doctoral thesis, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-13A6-A.
Повний текст джерелаЧастини книг з теми "Hybrid layer degradation"
Jain, Anamika, Laxmikant Gautam, Nikhar Vishwakarma, Rajeev Sharma, Nishi Mody, Surbhi Dubey, and Suresh P. Vyas. "Emergence of Polymer-Lipid Hybrid Systems in Healthcare Scenario." In Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials, 115–37. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8591-7.ch006.
Повний текст джерелаJain, Anamika, Laxmikant Gautam, Nikhar Vishwakarma, Rajeev Sharma, Nishi Mody, Surbhi Dubey, and Suresh P. Vyas. "Emergence of Polymer-Lipid Hybrid Systems in Healthcare Scenario." In Multifunctional Nanocarriers for Contemporary Healthcare Applications, 448–70. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-4781-5.ch017.
Повний текст джерелаKadian, Sachin, Manjinder Singh, and Gaurav Manik. "Graphene Based Hybrid Nanocomposites for Solar Cells." In Current and Future Developments in Nanomaterials and Carbon Nanotubes, 61–77. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815050714122030007.
Повний текст джерелаТези доповідей конференцій з теми "Hybrid layer degradation"
Singh, Hemant, Hemant Kumar Meena, and D. Saxena. "A Dual-Layer Energy Management System Consisting Degradation Cost of Hybrid Energy Storage System." In 2022 IEEE 9th Uttar Pradesh Section International Conference on Electrical, Electronics and Computer Engineering (UPCON). IEEE, 2022. http://dx.doi.org/10.1109/upcon56432.2022.9986369.
Повний текст джерелаLam, C. Y., S. Q. Shi, J. Lu, and P. K. L. Chan. "Investigating the Humidity Effect on Si/PEDOT:PSS Hybrid Solar Cell and Power Conversion Efficiency Recovery by Re-Deposition of the Hole Transporting Layer." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18265.
Повний текст джерелаMore, Karren L., Larry R. Walker, Yanli Wang, Edgar Lara-Curzio, Tracie M. Brummett, Mark van Roode, Jeffrey R. Price, Andy Szweda, and Gary Merrill. "Microstructural and Mechanical Characterization of a Hybrid Oxide CMC Combustor Liner After 25,000-Hour Engine Test." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59223.
Повний текст джерелаTehrani, Mehran, Ayoub Y. Boroujeni, Majid Manteghi, Zhixian Zhou, and Marwan Al-Haik. "Integration of Carbon Nanotubes Into a Fiberglass Reinforced Polymer Composite and its Effects on Electromagnetic Shielding and Mechanical Properties." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65202.
Повний текст джерелаGauvin-Verville, Antoine, Patrick K. Dubois, Benoit Picard, Alexandre Landry-Blais, Jean-Sébastien Plante, and Mathieu Picard. "Proof-Of-Concept of a Thermal Barrier Coated Titanium Cooling Layer for an Inside-Out Ceramic Turbine." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-58869.
Повний текст джерелаSatapathy, Abinash, Lakshay Battu, Liam Watson, Nazanin Rajabi, and Jungkyu Park. "Novel Thermal Coating for High-Speed Airplanes." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-95482.
Повний текст джерелаTehrani, Mehran, Masoud Safdari, Scott W. Case, and Marwan S. Al-Haik. "Using Multiscale Carbon Fiber/Carbon Nanotubes Composites for Damping Applications." In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5087.
Повний текст джерелаYou, Youngmin. "New degradation mechanism of blue-emitting layers in organic electroluminescence devices (Conference Presentation)." In Organic and Hybrid Light Emitting Materials and Devices XXIII, edited by Franky So, Chihaya Adachi, and Jang-Joo Kim. SPIE, 2019. http://dx.doi.org/10.1117/12.2530989.
Повний текст джерелаSultana, Nishat, Nicholas J. Demarais, and Denys Shevchenko. "Unveiling the Degradation mechanism of Perovskite Solar Cells by the Laser Desorption/Ionization Mass Spectrometry." In 11th International Conference on Hybrid and Organic Photovoltaics. València: Fundació Scito, 2019. http://dx.doi.org/10.29363/nanoge.hopv.2019.062.
Повний текст джерелаAli, Arham, and Murali Sundaram. "Experimental Study of Chemo-Thermal Micromachining of Glass." In ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8772.
Повний текст джерела