Letteratura scientifica selezionata sul tema "Peeling-off property"
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Articoli di riviste sul tema "Peeling-off property"
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Carmeli, M., e A. Feinstein. "Inhomogeneous cosmologies: The cosmic peeling-off property of gravity". International Journal of Theoretical Physics 24, n. 10 (ottobre 1985): 1009–17. http://dx.doi.org/10.1007/bf00670814.
Testo completo
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Zhou, Ming, Noshir Pesika, Hongbo Zeng, Jin Wan, Xiangjun Zhang, Yonggang Meng, Shizhu Wen e Yu Tian. "Design of gecko-inspired fibrillar surfaces with strong attachment and easy-removal properties: a numerical analysis of peel-zone". Journal of The Royal Society Interface 9, n. 75 (9 maggio 2012): 2424–36. http://dx.doi.org/10.1098/rsif.2012.0200.
Testo completoAbstract (sommario):
Despite successful fabrication of gecko-inspired fibrillar surfaces with strong adhesion forces, how to achieve an easy-removal property becomes a major concern that may restrict the wide applications of these bio-inspired surfaces. Research on how geckos detach rapidly has inspired the design of novel adhesive surfaces with strong and reversible adhesion capabilities, which relies on further fundamental understanding of the peeling mechanisms. Recent studies showed that the peel-zone plays an important role in the peeling off of adhesive tapes or fibrillar surfaces. In this study, a numerical method was developed to evaluate peel-zone deformation and the resulting mechanical behaviour due to the deformations of fibrillar surfaces detaching from a smooth rigid substrate. The effect of the geometrical parameters of pillars and the stiffness of backing layer on the peel-zone and peel strength, and the strong attachment and easy-removal properties have been analysed to establish a design map for bio-inspired fibrillar surfaces, which shows that the optimized strong attachment and easy-removal properties can vary by over three orders of magnitude. The adhesion and peeling design map established provides new insights into the design and development of novel gecko-inspired fibrillar surfaces.
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Phuc, Truong Duc, e Yoshino Masahiko. "Study the Effect of Chemical Treatment on Substrate Surface on the Formation Nanodots Array and its Optical Properties". Applied Mechanics and Materials 889 (marzo 2019): 95–101. http://dx.doi.org/10.4028/www.scientific.net/amm.889.95.
Testo completoAbstract (sommario):
In this research, an effective method to fabricate various metallic nanoand micro structure patterns is developed by combination of chemical stamping and selective peeling off technique. The feasibility of the process is experimentally studied and demonstrated. In this paper, the authors present the effects of the chemical treatment on the substrate surface on the formation of the nanodots array and its absorbance property. The results show that the chemical treatment by dropping Acetone solution on the quartz glass substrate strongly affects the morphology and absorbance property of the nanodots array. With the Acetone treatment on the substrate, the nanodots become smaller and more uniform in size through thermal dewetting process. Simultaneously, it results in blue shifted of the absorbance peak and enhancement of the absorbance peak intensity. The improvement of the optical property of the nanodots array is useful for plasmonic solarcell and bio sensing applications.
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Yaju, Xin, Zhao Xuya, Liu Xiaoman, Tie Rui e Cheng Shuliang. "Experimental Study on Shear Property of Integrated Sandwich Panel of Aluminum Honeycomb and Epoxy Resin". Open Mechanical Engineering Journal 9, n. 1 (7 ottobre 2015): 1000–1006. http://dx.doi.org/10.2174/1874155x01509011000.
Testo completoAbstract (sommario):
In order to realize functional integration, a new kind of sandwich panel was made. By carrying out quasi-static shear experiments, its elastic modulus and ultimate bearing capacity with different resin immersing thickness, additional layer thickness of resin and specimen thickness were investigated. The load - displacement curves and failure models were obtained, which were compared with the traditional aluminum honeycomb sandwich panel. The experiments indicated that the integrated aluminum honeycomb and epoxy resin sandwich panel’s shearing process undergoes three phases: elasticity, yield and destruction. The specimen’s elastic modulus and ultimate bearing capacity increase with the increase of the resin thickness, additional layer thickness of resin and the specimen thickness, which greatly improve compared to the traditional sandwich structure. The composite layer and the core show good stability under shearing process, and there is no peeling-off or cracking between the composite layer and the core.
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Xin, Lei, Hao Li, Jian Gao, Zhongwei Wang, KaiJie Zhou e Sirong Yu. "Large-scale fabrication of decoupling coatings with promising robustness and superhydrophobicity for antifouling, drag reduction, and organic photodegradation". Friction 11, n. 5 (6 gennaio 2023): 716–36. http://dx.doi.org/10.1007/s40544-022-0652-3.
Testo completoAbstract (sommario):
AbstractIt is still a challenge to achieve large-area preparation of robust superhydrophobic surfaces with strong mechanical stability. Here, a simple and low-cost method to prepare robust decoupling superhydrophobic coatings on aluminum (Al) alloys substrate has been presented. The superhydrophobicity and robustness of decoupling coatings are realized by structuring surfaces at two different length scales, with nanostructures for superhydrophobicity and microstructures for robustness. This prepared decoupling coating shows promising superhydrophobicity, with water contact angle (CA) of ∼158.4° and roll off angle (RA) of ∼3°. It also exhibits high repellency for impacting water droplets. Notably, the decoupling coating processes outstanding adhesion strength on the substrate after tape-peeling and cross-cut tests, also with promising wear resistantance after sandpaper abrasion and wear test. The friction coefficient of this decoupling coating is only ∼0.2. In addition, the robust decoupling superhydrophobic coating is applied to underwater buoyancy enhancement and fluid resistance reduction (drag reduction rate ∼30.09%). This decoupling superhydrophobic coating also displays promising self-cleaning and antifouling properties. Moreover, benefitting from the photocatalytic property of TiO2, this decoupling coating is also exploited for degrading organics to achieve seawater purification. This obtained decoupling superhydrophobic coating is expected to apply on other solids in marine fields, and the simple and eco-friendly method develops the potential practical application.
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-, Ajay B. R., Anuradha Shyam - e Dr Kavitha P. N. -. "A Study On Preparation And Evaluation Of Herbal Peel Off Face Mask". International Journal For Multidisciplinary Research 5, n. 5 (26 settembre 2023). http://dx.doi.org/10.36948/ijfmr.2023.v05i05.6812.
Testo completoAbstract (sommario):
Skin care preparations are designed to exert local activity when applied over the skin mucous membrane, these skin preparations include gel, lotion, ointment, cream, peel off mask etc. Peel off mask is the type of dosage form which is gently applied onto the facial skin surface and is peeled off after a few minutes of its application. It is designed to address common skin concerns and tightening of skin, moisturizing and tan removal from the skin. Here we are formulating of Turmeric peel off face mask. Turmeric extract adds glow to the skin, treats acne, slows down skin ageing. Aloe vera gel helps to remove acne and moisturizing the skin and have soothing property. Excipients used in the formulation are PVA (polyvinyl alcohol), glycerin, gelatin citric acid. Different formulations were taken and evaluated for the various parameters like spreadability, pH, stability studies, peeling time etc. The formulation evaluated for the parameters stands in standard range.
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Gajic, Dejan, e Leonhard Kehrberger. "On the Relation Between Asymptotic Charges, the Failure of Peeling and Late-time Tails". Classical and Quantum Gravity, 9 agosto 2022. http://dx.doi.org/10.1088/1361-6382/ac8863.
Testo completoAbstract (sommario):
Abstract The last few years have seen considerable mathematical progress concerning the asymptotic structure of gravitational radiation in dynamical, astrophysical spacetimes. In this paper, we distil some of the key ideas from recent works and assemble them in a new way in order to make them more accessible to the wider general relativity community. In the process, we also discuss new physical findings. First, we introduce the conserved $f(r)$-modified Newman--Penrose charges on asymptotically flat spacetimes, and we show that these charges provide a dictionary that relates asymptotics of massless, general spin fields in different regions: Asymptotic behaviour near $i^+$ ("late-time tails") can be read off from asymptotic behaviour towards $\mathcal I^+$, and, similarly, asymptotic behaviour towards $\mathcal I^+$ can be read off from asymptotic behaviour near $i^-$ or $\mathcal I^-$. Using this dictionary, we then explain how: \textbf{(I)} the quadrupole approximation for a system of $N$ infalling masses from $i^-$ causes the "peeling property towards $\mathcal I^+$" to be violated, and \textbf{(II)} this failure of peeling results in deviations from the usual predictions for tails in the late-time behaviour of gravitational radiation: Instead of the Price's law rate $r\Psi^{[4]}|_{\mathcal I^+}\sim u^{-6}$ as $u\to\infty$, we predict that $r\Psi^{[4]}|_{\mathcal I^+}\sim u^{-4}$, with the coefficient of this latter decay rate being a multiple of the monopole and quadrupole moments of the matter distribution in the infinite past.
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Xupeng, Chen, Sun Zhuowen e Pang Jianyong. "Study on Metakaolin Impact on Concrete Performance of Resisting Complex Ions Corrosion". Frontiers in Materials 8 (13 dicembre 2021). http://dx.doi.org/10.3389/fmats.2021.788079.
Testo completoAbstract (sommario):
The main purpose of this study is to determine the metakaolin (MK) impacts on the concrete durability when the concrete is subjected to joint corrosion of SO42−,Mg2+ and, Cl−. Four groups of concrete test samples, which contained different MK contents, were designed and tested in order to see their physical property changes and macro-morphology differences during the cyclic corrosion process. And a series of approaches, including XRD, FTIR, SEM, and EDS, were applied to study the concrete phase composition changes and the micro-morphology features of all groups. According to the test results, when reaching 20 cycles, the concrete sample with 10% MK showed the best concrete physical properties; when reaching 120 cycles, the concrete with 5% MK content showed the best durability, produced similar amount of corrosion products to ordinary concrete, and presented relatively compacted micro-structure and small internal porosity. Mg2+ actually has a great impact on metakaolin. The corrosion product quantity increased significantly when MK admixture reached 15%. Due to the great number of produced M-S-H, the corrosive ions damaged the concrete for a second time, leading to serious aggregate peeling-off, powder surface of test samples, and porous micro-structure.
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Syed, Asaad Mahmood, Fawad Rizvi Syed, Burhan Abdul Majid Khan e Tanweer Hasan Khan. "Role of Concomitant Internal Limiting Membrane (ILM) Peeling during Rhegmatogenous Retinal Detachment (RRD) Surgery in Preventing Postoperative Epiretinal Membrane (ERM) Formation". Pakistan Journal of Medical Sciences 37, n. 3 (10 marzo 2021). http://dx.doi.org/10.12669/pjms.37.3.3576.
Testo completoAbstract (sommario):
Objective: To investigate the role of concomitant Internal Limiting Membrane (ILM) peeling during surgery for macula off Rhegmatogenous Retinal Detachment (RRD) in preventing postoperative Epiretinal Membrane (ERM) formation; and its effect on the visual acuity.
Methods: This was a prospective, quasi-experimental study conducted from August 2018 to July 2019 at LRBT Tertiary Eye Care hospital, Karachi. Fifty-six patients with macula off RRD were divided into groups A (with ILM peeling) and B (without ILM peeling) via non-probability convenience sampling. All patients underwent standard 3 ports pars plana vitrectomy with silicon oil tamponade. In Group-A, ILM was stained using 0.5% ICG. Patients were evaluated clinically and by spectral domain optical coherence tomography (SD-OCT), pre- and post-operatively. Main outcomes recorded were best corrected visual acuity (BCVA) and occurrence of ERM on SD-OCT.
Results: There were 26 patients in Group-A and 30 patients in Group-B. At six months’ follow-up, ERM had not developed in any case in Group-A compared to five patients (16.7%) in Group-B. There was no statistical difference in mean BCVA change from baseline.
Conclusion: ILM peeling during vitrectomy for RRD prevents the formation of macular ERM post-operatively. This may reduce the need of a second vitrectomy. However, visual outcomes were comparable to the non-ILM peeling vitrectomy.
doi: https://doi.org/10.12669/pjms.37.3.3576
How to cite this:Mahmood SA, Rizvi SF, Khan BAM, Khan TH. Role of Concomitant Internal Limiting Membrane (ILM) Peeling During Rhegmatogenous Retinal Detachment (RRD) Surgery in Preventing Postoperative Epiretinal Membrane (ERM) Formation. Pak J Med Sci. 2021;37(3):---------. doi: https://doi.org/10.12669/pjms.37.3.3576
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Wei, Yuhui, Xuejiao Cao, Xue Ling, Zhaowei Su, Zihao Wan, Kaixuan Liu, Chuchu Shemin e Wei Pan. "Develop an environment‐friendly detergent for textile relics adsorbing soil/rust stains". Journal of Surfactants and Detergents, 2 ottobre 2023. http://dx.doi.org/10.1002/jsde.12718.
Testo completoAbstract (sommario):
AbstractTo develop an environment‐friendly detergent for textile relics adsorbing soil/rust stains, the relationship between surfactant types and concentrations, the nature of additives and the type of textile (e.g., cotton, linen, silk or wool) were systematically investigated. Results showed that the detergent formulations of sodium montmorillonite (5 g/L) as additives were overall the best options for soil stains removal on textile relics. Specifically, the most suitable surfactant for cotton, linen, silk and wool textiles relics adsorbing soil stains was rhamnolipid (8 g/L), tea saponin (6 g/L), tea saponin (8 g/L), alkyl glycosides (10 g/L), respectively. The detergent formulations of ascorbic acid (5 g/L) as additives were more beneficial for rust stains peeling‐off from the surface of the textile relics regardless of the type of surfactant and textile relics. But the optimal surfactants for different textiles relics were different. In detail, the most suitable surfactants for cotton, linen, silk and wool textiles relics adsorbing rust stains were separately rhamnolipid (10 g/L), Tea saponin (8 g/L), Tea saponin (6 g/L), Alkyl glycosides (6 g/L). This indicated that the washing effect of detergent formulation was related to the types of stains and textile relics' fiber. These findings not only demonstrated the necessity for developing detergent formulations for different textile relics, but also illustrated the complexity and diversity of the textile relics' stain‐washing work. Moreover, this work also assists understanding of the washing mechanism of textile relics and help the department of textile relics protection to properly wash textile relics and extend the life of textile relics.
Tesi sul tema "Peeling-off property"
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Coudray, Armand. "Asymptotic behaviour of zero rest-mass fields on radiative space-times". Electronic Thesis or Diss., Brest, 2024. http://www.theses.fr/2024BRES0026.
Testo completoAbstract (sommario):
Cette thèse explore deux sujets distincts. La première partie examine le comportement asymptotique des ondes scalaires dans l’espace-temps de Vaidya, décrivant un trou blanc sphérique en évaporation via émission de poussières isotropes. L’analyse se focalise sur la régularité des ondes scalaires conformes au bord (passé et futur) isotrope du compactifié, en fonction des données initiales du champ conforme. Nous construisons également l’opérateur de scattering conforme, montrant qu’il encode toute l’évolution du champ dans l’espace-temps compactifié. Ces résultats reposent sur des méthodes d’inégalités d’énergie et de champs de vecteurs. La seconde partie se concentre sur l’analyse des courbes isotropes entrantes dans les espaces-temps purement radiatifs de Robinson-Trautman de type D. Contrairement à une étude précédente sur la métrique de Vaidya, ces courbes ne forment pas l’horizon passé en raison de la géométrie de la solution. Le dernier chapitre classe ces courbes, montrant qu’elles présentent un comportement similaire à celui observé dans l’espace-temps de VaidyaThis thesis adresses two distinct subjects. The first part examines the asymptotic behavior of scalar waves in the Vaidya spacetime, describing a spherical white hole evaporating via emission of isotropic dust. The analysis focuses on the regularity of conformal scalar waves at the isotropic boundary (past and future) of the compactified spacetime, depending on the initial data of the conformal field. Additionally, we construct the conformal scattering operator, demonstrating its ability to encode the entire field evolution in the compactified spacetime.These findings rely on energy inequalities and vector field methods.The second part centers on analyzing incoming isotropic curves in the purely radiative Robinson-Trautman spacetimes of type D. In contrast to a previous study on Vaidya’s metric, these curves do not form the past horizon due to the solution’s geometry. The final chapter categorizes these curves, revealing a behavior akin to that observed in Vaidya’s spacetime
Atti di convegni sul tema "Peeling-off property"
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QIAO, YAO, YONGSOON SHIN, ETHAN K. NICKERSON, DANIEL R. MERKEL, ANGEL ORTIZ e KEVIN L. SIMMONS. "ADHESIVELY-BONDED METAL-CFRTP BI-MATERIALS: ENHANCED CRACK GROWTH RESISTANCE VIA PLASMA AND QUANTIFIED FRACTURE VIA SIZE EFFECT METHOD". In Proceedings for the American Society for Composites-Thirty Seventh Technical Conference. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/asc37/36496.
Testo completoAbstract (sommario):
This work investigated air plasma effect on the Mode I crack growth resistance of adhesively-bonded metal-CFRTP dissimilar joints by using aluminum alloy (AA6061) and short-carbon-fiber-reinforced polyamide 66 (CFRPA66) as an example, and the Double Cantilever Beam (DCB) fracture testing as an evaluation method. The results showed that air plasma treatment can improve the fracture resistance of adhesively-bonded AA6061-CFRPA66 dissimilar joints with 140% enhanced Mode I fracture energy in maximum compared to non-treated ones. The quantified fracture energies from size effect method for both non-treated and plasma-treated cases are geometry-independent, whereas this is not true for modified beam theory causing geometry-dependent results. The foregoing improvement was confirmed from the failure surface morphology of plasma-treated specimens, showing fibers peeling off from CFRPA66 surface due to plasma-enhanced bonding between CFRPA66 and adhesive by the formation of covalent bonds at their interface. This study demonstrated air plasma as an efficient surface modification method to enhance the fracture resistance of adhesively-bonded metal-CFRTP dissimilar joints, and size effect method as a characterization method to properly quantify their fracture properties. These aspects are valuable in the area of multi-materials joining.