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Статті в журналах з теми "Multilayer shell"

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Szczęch, Marta, and Krzysztof Szczepanowicz. "Polymeric Core-Shell Nanoparticles Prepared by Spontaneous Emulsification Solvent Evaporation and Functionalized by the Layer-by-Layer Method." Nanomaterials 10, no. 3 (2020): 496. http://dx.doi.org/10.3390/nano10030496.

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The aim of our study was to develop a novel method for the preparation of polymeric core-shell nanoparticles loaded with various actives for biomedical applications. Poly(caprolactone) (PCL), poly(lactic acid) (PLA) and poly(lactide-co-glycolide) (PLGA) nanoparticles were prepared using the spontaneous emulsification solvent evaporation (SESE) method. The model active substance, Coumarin-6, was encapsulated into formed polymeric nanoparticles, then they were modified/functionalized by multilayer shells’ formation. Three types of multilayered shells were formed: two types of polyelectrolyte she
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BRISCHETTO, SALVATORE. "AN EXACT 3D SOLUTION FOR FREE VIBRATIONS OF MULTILAYERED CROSS-PLY COMPOSITE AND SANDWICH PLATES AND SHELLS." International Journal of Applied Mechanics 06, no. 06 (2014): 1450076. http://dx.doi.org/10.1142/s1758825114500768.

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A 3D free vibration analysis of multilayered structures is proposed. An exact solution is developed for the differential equations of equilibrium written in general orthogonal curvilinear coordinates. The equations consider a geometry for shells without simplifications and allow the analysis of spherical shell panels, cylindrical shell panels, cylindrical closed shells and plates. The method is based on a layer-wise approach, the continuity of displacements and transverse shear/normal stresses is imposed at the interfaces between the layers of the structures. Results are given for multilayered
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Sun, Jiabin, Shengbo Zhu, Zhenzhen Tong, Zhenhuan Zhou, and Xinsheng Xu. "Post-buckling analysis of functionally graded multilayer graphene platelet reinforced composite cylindrical shells under axial compression." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 476, no. 2243 (2020): 20200506. http://dx.doi.org/10.1098/rspa.2020.0506.

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Axially compressed composite cylindrical shells can attain multiple bifurcation points in their post-buckling procedure because of the natural transverse deformation restraint provided by their geometry. In this paper, the post-buckling analysis of functionally graded (FG) multilayer graphene platelets reinforced composite (GPLRC) cylindrical shells under axial compression is carried out to investigate the stability of such shells. Rather than the critical buckling limit, the focus of the present study is to obtain convergence post-buckling response curves of axially compressed FG multilayer G
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Meish, Yuliia, Maryna Belova, Nataliia Maiborodina, and Viacheslav Gerasymenko. "Determining the effect of longitudinal stiffeners on the deformation of multilayer ellipsoidal shells under non-stationary loads." Eastern-European Journal of Enterprise Technologies 4, no. 7 (130) (2024): 78–88. http://dx.doi.org/10.15587/1729-4061.2024.310241.

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The object of this study is the deformation of multilayer ellipsoidal shells under non-stationary distributed load. It is proposed to reinforce the shell with longitudinal stiffeners to enhance the strength of it. The application of Timoshenko's theory of shells and cores enabled the investigation of the influence of longitudinal stiffeners on the deformation of multilayer ellipsoidal shells under non-stationary loads with the discrete positioning of the stiffeners. A mathematical model of shell oscillations under various types of short-term non-stationary loads was based on the Hamilton-Ostro
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Song, Peng Yun, Yang Yong, Wang Zhong, Weng Yu, Ming Fu Hu, and Xiao Qin Zhu. "The Features of the Integrated Multilayer-Wrapped High Pressure Vessel and its Fabrication Quality being Inspected by Hydrostatic Test." Advanced Materials Research 201-203 (February 2011): 1539–43. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.1539.

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The integrated multilayer-wrapped high pressure vessel is a special kind of multilayered pressure vessel whose circumferential weld seams are able to be in an offset pattern. The fabrication quality is assured by controlling the gaps of the layers. The tightness of the wrapped layers can be inspected by the hydrostatic test. The stress at the outer shell of a DN1400 urea synthetic reaction tower of the integrated multilayer-wrapped has been measured at the time of the hydrostatic test. The results show that the longitudinal stress is identical to that of the theoretical value, and the ratio of
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Zhou, Guo-Jiang, Tao Yu, Yang Zhou, and Li-Guo Wei. "Preparation of spherical LiNi0.5Mn1.5O4 with core-multilayer shells structure by co-precipitation method and long cycle performance." E3S Web of Conferences 213 (2020): 01011. http://dx.doi.org/10.1051/e3sconf/202021301011.

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As a promising cathode material for lithium ion battemensionalry of high voltage, spinel LiNi0.5Mn1.5O4 has attracted interest due to its high discharging voltage at 4.7 V and high energy density of 610 Wh kg-1. In this work, LiNi0.5Mn1.5O4 with a new core-multilayer shells structure (LNMO-900) is synthesized successfully by co-precipitation method and shows a better electrochemical performance. The formation of the core-multilayer shells structure is related to the kirkendall effect, the shell maintains structural stability, and improves long cycle performance. Core-multilayer shells structur
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Evstigneev, A. I., V. I. Odinokov, A. V. Sviridov, E. A. Dmitriev, and V. V. Petrov. "Mathematical Modelling of Stress-Strain State of Multilayer Shell Molds." Materials Science Forum 857 (May 2016): 565–72. http://dx.doi.org/10.4028/www.scientific.net/msf.857.565.

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Анотація:
The analysis of the trends for development of technological processes to form shell molds shows that the accuracy and purity of the surface of shaped castings are one of the main criteria for the level of development of the science and technology of foundry engineering. The equations of continuum mechanics and thermal conductivity and the numerical method were used to build a mathematical model of SSS of multilayer shell mold to determine the temperature fields in a shell mold and solidifying casting, thickness of solidified layer of the casting, stress, strain, and displacement of shell layer
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Andreev, Vladimir I. "About One Way of Optimization of the Thick-Walled Shells." Applied Mechanics and Materials 166-169 (May 2012): 354–58. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.354.

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Abstract. The paper discusses a method of optimization of thick-walled shells on the basis of the solution of inverse problems theory of elasticity of inhomogeneous bodies. There are discussed the terms of equal-stress and equal-strength structures. The notion of efficiency ratio of equal-strength shell as the ratio of limit loads in heterogeneous and homogeneous shells. Constructed the model of a multilayer shell of polymer concrete for which the coefficient of efficiency is close to 2.
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TAKENAKA, H., K. NAGAI, H. ITO, et al. "SOFT X-RAY REFLECTIVITY AND THERMAL STABILITY OF CoCr/C MULTILAYER X-RAY MIRRORS." Surface Review and Letters 09, no. 01 (2002): 593–96. http://dx.doi.org/10.1142/s0218625x02002701.

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The development of highly reflective multilayer mirrors for use in the wavelength region around 6 nm is desired for X-ray photoemission spectroscopy for inner-shell excitation using a Schwarzschild objective. For this application, reflectivity is the most critical parameter determining the performance of multilayer mirrors, because the reflectivity of multilayers in the 6 nm region is generally very low. We have designed CoCr/C multilayer mirrors with a comparatively high reflectivity at around normal incidence and have fabricated them by magnetron sputtering. The measured peak reflectivity is
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Alekseev, Gennady V., and Dmitry A. Tereshko. "Optimization method in material bodies cloaking with respect to static physical fields." Journal of Inverse and Ill-posed Problems 27, no. 6 (2019): 845–57. http://dx.doi.org/10.1515/jiip-2018-0084.

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Abstract Inverse problems associated with designing cylindrical DC electrical cloaking shells are studied. Using the optimization method, these inverse problems are reduced to corresponding control problems in which electrical conductivities play the role of passive controls. Admissibility of the optimization method for solving inverse design problems is justified. A numerical algorithm based on the particle swarm optimization is proposed, and the results of numerical experiments are discussed. Optimization analysis shows that high cloaking efficiency of the shell can be achieved either using
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Дисертації з теми "Multilayer shell"

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Gong, Yuxuan. "Dielectric and Structural Study of Bi2O3-BaO-CuO Glass Flux Additives Sintered Barium Titanate for Multilayer Capacitor Applications." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1368086374.

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Harun, Zawati. "Simulation of drying for multilayer investment casting shells." Thesis, Swansea University, 2007. https://cronfa.swan.ac.uk/Record/cronfa42815.

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Анотація:
The number of interacting variables influencing the drying of ceramic shells is large and to explore by experimental means is prohibitive. Therefore, the main advantage of the proposed theoretical model in this work, is that the effect of the drying conditions on their other important parameters (such as saturation, temperature, gas pressure) and transport properties (permeabilities, diffusivity) that control final properties of a multilayer ceramic shell can be investigated without extensive experimentation. This is very important in avoiding shell failure due to incomplete drying. Due to the
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Дубинка, С. Ю. "Моделювання теплових полів в багатошарових системах із заданими граничними умовами". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75674.

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Анотація:
Сформована математична задача дослідження, визначені початкові та граничні умови поширення теплової енергії. Виконано моделювання теплового поля, що базувалось на рішенні диференціального рівняння теплопровідності. Розглянуто процес теплопередачі між матеріалами стінки. Розроблено математичну модель при переході температури в оболонці з покриттям. Розроблена комп’ютерна програма в середовищі Matlab. Програмно реалізований чисельний розрахунок температурного поля оболонки.
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Мисловська, М. С. "Розрахунок статичних і динамічних характеристик модифікованої конструкції пристрою автоматичного врівноважуючого пристрою". Master's thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/71740.

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Анотація:
Об’єкт дослідження – процес навантаження і деформування багатошарових композитних торових оболонок. Мета роботи – полягає в розробці методики розрахунку термопружного напруженого стану композитних торових оболонок високого тиску. Методи дослідження – для розв’язання термопружної незв'язаної задачі застосовуються метод сплайн-колокацій, метод Фур’є, метод рядів Тейлора, метод ортогональної прогонки. На основі даних методів cтворений алгоритм і мовою програмування VISUALFORTRAN складена програма розрахунку напружено-деформованого стану багатошарових торових оболонок від дії статичного та темп
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Zhang, Zhifeng. "Bimetallic reversed core-shell nanoparticles : electrochemical synthesis, characterization and application /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202006%20ZHANG.

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BRISCHETTO, SALVATORE. "Classical and mixed multilayered plate/shell models for multifield problems analysis." Doctoral thesis, Politecnico di Torino, 2009. http://hdl.handle.net/11583/2497659.

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Analytical and numerical models have been implemented in this work to study multifield problems for multilayered structures. The dissertation is organized in three main parts: - an extension of the geometrical relations and constitutive equations to multifield problems and multilayered plates and shells; - the introduction of Carrera’s Unified Formualtion (CUF), the use of variational statements, and their extension to multifield problems; - the results of several multifield couplings.
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Brischetto, Salvatore. "Classical and mixed multilayered plate/shell models for multifield problems analysis." Paris 10, 2009. http://www.theses.fr/2009PA100198.

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Анотація:
Des approches analytiques et numériques ont été développées et implémentées dans ce travail afin d’étudier les structures multicouches sous sollicitations multi physiques. Le document est organisé en trois principales parties : une extension des relations géométriques et des lois de comportement aux problèmes multi physiques et aux plaques et coques multicouches; l’introduction de la CUF, des principes variationnels, et leur extension aux problèmes multi physiques; des résultats pour différents problèmes multi physiques couples. Les lois de comportement pour les problèmes multi physiques sont
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Dana, Maxime. "Développement de modèles vibro-acoustiques pour prédire le champ proche d’une coque cylindrique raidie munie de revêtements acoustiques." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI011.

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Анотація:
Les antennes SONAR sont utilisées en lutte sous-marine pour la détection acoustique des navires adverses. Leurs performances dépendent de la capacité de l'antenne et de son traitement par formation de voies à faire ressortir le signal à détecter, et à sa capacité à s'affranchir du bruit de fond environnant après traitement. On cherchera à développer des modèles vibro-acoustiques simulant la réponse en signal au niveau des capteurs d'une antenne de flanc fixée sur la coque résistante du bâtiment. Ces modèles devront prendre en compte des revêtements viscoélastiques fixés sur la coque d'acier et
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Arciniega, Aleman Roman Augusto. "On a tensor-based finite element model for the analysis of shell structures." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3156.

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In the present study, we propose a computational model for the linear and nonlinear analysis of shell structures. We consider a tensor-based finite element formulation which describes the mathematical shell model in a natural and simple way by using curvilinear coordinates. To avoid membrane and shear locking we develop a family of high-order elements with Lagrangian interpolations. The approach is first applied to linear deformations based on a novel and consistent third-order shear deformation shell theory for bending of composite shells. No simplification other than the assumption of linear
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Khazeni, Nasser. "Synthesis And Characterization Of Zirconium Tungstate-zirconia Core-shell Composite Particles." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615316/index.pdf.

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Анотація:
Thermal mismatch between different components of a system could cause of problems like residual stress induced cracking, thermal fatigue or even optical misalignment in certain high technology applications. Use of materials with customized thermal expansion coefficient is a counter-measure to resolve such problems. Zirconium tungstate (ZrW2O8) with negative thermal expansion coefficient is capable of being used in synthesis of composites with tailored coefficient of thermal expansion (CTE). In this work, the sol-gel method which had been already set up in our group was characterized and the so
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Книги з теми "Multilayer shell"

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Sabik, Agnieszka. Analiza stateczności powłok warstwowych obciążonych termicznie: Stability analysis of thermally loaded multilayered shells. Wydawnictwo Politechniki Gdańskiej, 2012.

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Частини книг з теми "Multilayer shell"

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Hajlaoui, A., E. Triki, A. Frikha, and F. Dammak. "Non-linear Dynamics Analysis of Multilayer Composite Shells with Enhanced Solid-Shell Elements." In Applied Condition Monitoring. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41459-1_28.

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Kuzyk, O. V., O. O. Dan’kiv, R. M. Peleshchak, and I. D. Stolyarchuk. "Acoustoelectronic Effect in Semiconductor Quantum Dots with a Multilayer Shell." In Springer Proceedings in Physics. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-67527-0_31.

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Filippenko, George V., and Tatiana V. Zinovieva. "The Effect of Hydrogen Embrittlement on the Torsional Oscillations of the Pipe as a Multilayer Shell." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-37246-9_24.

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Gou, Zhong Ru, Wen Jian Weng, Ja Bei Zhou, Pi Yi Du, and Gao Rong Han. "Tailoring of Multilayer Core-Shell Structure for the Controllable Release of Biologically Active Silicon and Strontium Ions." In Key Engineering Materials. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-422-7.1057.

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Biswal, Deepak Kumar, and Sukesh Chandra Mohanty. "Free Vibration Analysis of Multilayer Skew Sandwich Spherical Shell Panels with Viscoelastic Material Cores and Isotropic Constraining Layers." In Vibration Engineering for a Sustainable Future. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47618-2_25.

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Lvov, Yuri, Pravin Pattekari, and Tatsiana Shutava. "Making Aqueous Nanocolloids from Low Solubility Materials: LbL Shells on Nanocores." In Multilayer Thin Films. Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527646746.ch8.

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Cui, Wei, and Junbai Li. "Nanoarchitectonics of Multilayer Shells toward Biomedical Application." In Materials Nanoarchitectonics. Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527808311.ch6.

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Sarkar, Swapan Kumar, Rajat Kanti Paul, and Byong Taek Lee. "Fabrication and Microstructure Control of Continuously Porous Ceramics with Al2O3-(m-ZrO2) and t-ZrO2 Multilayer Shell." In Solid State Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-31-0.1113.

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Carrera, Erasmo, and Salvatore Brischetto. "Thermomechanical Coupling in Multilayered Plates and Shells." In Encyclopedia of Thermal Stresses. Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-2739-7_594.

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Carrera, Erasmo, and Enrico Zappino. "Node-Dependent Kinematics, Multilayered Beam, Plate, and Shell Elements." In Encyclopedia of Continuum Mechanics. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53605-6_141-1.

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Тези доповідей конференцій з теми "Multilayer shell"

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Loukodimou, Adamantini, Dimitrios Statharas, David Weston, and Shiladitya Paul. "Multilayer Anticorrosion Systems for Offshore Wind Turbines." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-20840.

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Abstract Offshore wind turbines are subjected to a harsh marine environment, which can cause detrimental problems to them due to corrosion, if not protected properly. Offshore wind energy is considered to play an important role in the net zero emissions by 2050, as set in Paris Agreement [1], contributing to environmental protection and sustainability. Thus, the long-term corrosion protection and life expansion of these offshore structures is of high importance. In this work, the formation of microcapsules, loaded with corrosion inhibitor liquid is presented. More specifically the microcapsule
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Loukodimou, Adamantini, Dimitrios Statharas, David Weston, and Shiladitya Paul. "Development of Multilayer Coating Systems for Self-Healing Protection and Corrosion Mitigation in the Atmospheric Zone of Offshore Wind Turbines." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17691.

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Abstract Offshore wind turbines are subjected to harsh marine environment, which can cause detrimental problems to their integrity due to corrosion. Offshore wind energy is considered to play an important role on the net zero emissions by 2050, contributing to environmental protection, hence the long-term protection from corrosion of these offshore structures is of high importance. In this work the formation of microcapsules, loaded with corrosion inhibitor liquid is presented. More specifically the microcapsules consist of polystyrene shell and 3-octanoylthio-1-propyltriethoxysilane core. The
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Gheorghita, Roxana, Roxana Filip, and Irina Besliu. "EDIBLE BIOPOLYMER PACKAGING, ZERO-WASTE ALTERNATIVES FOR PRESERVATION AND CONSUMING POWDERED BEVERAGES." In SGEM International Multidisciplinary Scientific GeoConference. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/6.2/s24.08.

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Refinement of consumer preferences made the food industry to develop new products, with improved characteristics, with openness to monocomponent products. Unfortunately, the preference for this type of products leads to high costs, especially due to the packaging used. International policies, and especially European ones, are looking for solutions to eliminate the hazardous waste for the environment. The present study discusses the development of a biopolymeric material intended for the packaging of powdered drinks, solubilized and consumed together with them. Based on a patent-pending composi
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Steeves, John, Kathryn Jackson, Sergio Pellegrino, et al. "Multilayer active shell mirrors for space telescopes." In SPIE Astronomical Telescopes + Instrumentation, edited by Ramón Navarro and James H. Burge. SPIE, 2016. http://dx.doi.org/10.1117/12.2233594.

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Jonnard, P. "Bragg amplification of the Si Κα line emitted from a Mo/Si multilayer irradiated by an electron beam". У X-RAY AND INNER-SHELL PROCESSES. AIP, 2003. http://dx.doi.org/10.1063/1.1536365.

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Guarino, G. "Nonlinear mechanical analysis of aerospace shell structures through the discontinuous Galerkin method." In Aeronautics and Astronautics. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902813-62.

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Анотація:
Abstract. The geometrically non-linear mechanical response of multilayer composite shells is addressed via an innovative discontinuous Galerkin formulation. In the framework of the Carrera Unified formulation, equivalent single layer kinematics with different through-the-thickness accuracy is adopted. The variational statement governing the shell nonlinear behavior is derived. The corresponding governing equations are solved via a discontinuous Galerkin approach, which employs the pure penalty method to weakly enforce the connection between the mesh elements. Numerical tests are presented to s
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Ramdane, B., D. Trichet, M. Belkadi, T. Saidi, and J. Fouladgar. "Electromagnetic and thermal modeling of composite materials using multilayer shell elements." In 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation (CEFC 2010). IEEE, 2010. http://dx.doi.org/10.1109/cefc.2010.5481805.

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8

Kaplan, A. E., and C. T. Law. "X-ray narrow line transition radiation due to excitation of inner-shell electrons in atoms." In OSA Annual Meeting. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.tum2.

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Анотація:
We develop a theory of a new effect, whereby x-ray radiation with narrow spectral lines is generated by an electron beam passing through a multilayer solid-state structure using a method proposed earlier by Kaplan and Datta. These lines are attributed to the extremely narrow resonances of dielectric constants of materials in the vicinity of the atomic absorption edges. The available data for atomic scattering factor f for all elements in the periodic table show that only K, L, and M absorption edges have sharp resonances and, therefore, are suitable for the effect discussed. The power of the t
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9

Papanikolaou, Vassilis, Christos Karakostas, Konstantinos Morfidis, and Emmanouil Baboukas. "A MULTILAYER SHELL ELEMENT FOR NONLINEAR ANALYSIS OF R/C SHEAR WALLS." In 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Institute of Structural Analysis and Antiseismic Research National Technical University of Athens, 2021. http://dx.doi.org/10.7712/120121.8786.19540.

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10

He Chaoming, Zhang Jing, Li Bailin, and Fang Liyong. "Research on the virtual assembly and uniform coat of multilayer revolving shell." In International Technology and Innovation Conference 2006 (ITIC 2006). IEE, 2006. http://dx.doi.org/10.1049/cp:20060903.

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