Gotowe bibliografie tematyczne / ME MATERIALS

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Gotowa bibliografia na temat „ME MATERIALS”

Autor: Grafiati
Data publikacji: 11 września 2023

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Artykuły w czasopismach na temat "ME MATERIALS"

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Łosiewicz, Bożena, Magdalena Popczyk i Patrycja Osak. "New Ni-Me-P Electrode Materials". Solid State Phenomena 228 (marzec 2015): 39–48. http://dx.doi.org/10.4028/www.scientific.net/ssp.228.39.

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The Ni-Me-P alloy coatings containing metal as alloying component (Me = Co, W) in a Ni-P amorphous matrix, were potentiostatically electrodeposited onto a polycrystalline Cu substrate. Deposition potential was established based on polarization curves of electrodeposition of Ni-Co-P, Ni-W-P and Ni-P alloy coatings. SEM, EDS, XRD and X-ray microanalysis methods, were applied for chemical and physical characterization of the obtained coatings. Linear analysis of Ni, Co and W distribution in the microregions of the appropriate alloy coating revealed that surface distribution of these elements is homogeneous what is due to a molecular mixing of the amorphous nickel matrix with the alloying components. It was found that the Ni-Co-P and Ni-W-P coatings have the amorphous structure like the Ni-P deposit and alloying components as Co or W are built-in into the appropriate coating in the amorphous form. The mechanism of the induced codeposition of these ternary Ni-Me-P coatings, has been discussed.
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Fox, S. "Recognising materials power". Manufacturing Engineer 82, nr 2 (1.04.2003): 36–39. http://dx.doi.org/10.1049/me:20030213.

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Ordan’yan, S. S., S. V. Vikhman i Yu S. Nagaeva. "Composite WSi2–Me VB2 materials in W–Si–Me V–B systems". Refractories and Industrial Ceramics 50, nr 2 (marzec 2009): 127–30. http://dx.doi.org/10.1007/s11148-009-9153-4.

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JEFFRIES, W. J. "THE MATERIALS CORROSION INVESTIGATION AT EASTPORT, ME". Journal of the American Society for Naval Engineers 52, nr 2 (18.03.2009): 295–300. http://dx.doi.org/10.1111/j.1559-3584.1940.tb05170.x.

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Zhang, Zeng Ping, Yong Wen, Hong Zhao Du, Jian Zhong Pei i Shuan Fa Chen. "Dielectric and Hot/Wet Properties of Methyl-Silsesquioxane/Cyanate Ester Resin Hybrid Materials". Advanced Materials Research 216 (marzec 2011): 630–34. http://dx.doi.org/10.4028/www.scientific.net/amr.216.630.

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Methylsilsesquioxane (Me-SSQ) was incorporated into cyanate ester resin (CE) to obtain organic-inorganic hybrids with better dielectric properties in this study. First, methyltriethoxysilane was hydrolyzed and condensed to synthesize Me-SSQ. Then several Me-SSQ/CE hybrids containing different contents of Me-SSQ were prepared. The effect of Me-SSQ content on the dielectric and hot/wet properties of materials was investigated. Results showed that the Me-SSQ/CE hybrid containing 20wt% of Me-SSQ shows a dielectric constant of 2.78, which is much lower than the pure CE resin. At the same time, the dielectric loss of the Me-SSQ/CE hybrids was slightly increased (tanδ<0.006). It indicates that Me-SSQ/CE hybrid is a promising matrix materials for high-performance printed circuit board (PCB).
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Каракчиева, Н. И., Ю. А. Абзаев, А. С. Князев, В. И. Сачков i И. А. Курзина. "PHASE COMPOSITION OF COMPOSITE MATERIALS Ti-Al-Me (Me=Sc, Y, Dy, Ho, Ta) OBTAINED BY the «HYDRIDE TECHNOLOGY»". Южно-Сибирский научный вестник, nr 5(45) (31.10.2022): 28–33. http://dx.doi.org/10.25699/sssb.2022.45.5.006.

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Приведено описание структурно-фазового состава образцов на основе Ti-49ат.%Al-2ат.%Me (Ме = Sc, Y, Dy, Ho, Ta). Образцы получены «Гидридной технологией», в условиях гидрирования металлов (Ti, Sc, Y, Dy, Ta, Ho) и последующего дегидрирования сформированных заготовок в вакуумной среде при нагреве. Методом просвечивающей электронной микроскопией обнаружено, что в образцах Ti-50Al, Ti-49Al-2Sc, Ti-49Al-2Y, Ti-49Al-2Ta (ат.%) в локальных местах в объеме образцов сформировалась ламельная структура. Микролегирование системы Ti-Al элементами иттриевой группы (Y, Ho, Dy) до 2 ат.% приводит к формированию изотипическихсоединений Y6Ti4Al43, Dy6Ti4Al43, Ho6Ti4Al43(гексагональная, P63/mcm). Для образца Ti-49ат.%Al-2ат.%Ta значение микротвердости составляет 2,15 ГПа. The structural and phase composition of the samples based on Ti-49at.%Al-2at.%Me (Ме = Sc, Y, Dy, Ho, Ta) has been presented. The samples were obtained by the “Hydride technology” during hydrogenation of (Ti, Sc, Y, Dy, Ta, Ho) metals and subsequent dehydration of the formed blanks in the vacuum environment when heated. Transmission electron microscopy allowed revealing the fact that a lamellar structure was formed in the Ti-50Al, Ti-49Al-2Sc, Ti-49Al-2Y, Ti-49Al-2Ta samples (at.%) in the local places in the sample volume. Microalloying the Ti-Al system with the elements of the yttrium group (Y, Ho, Dy) up to 2 at.% leads to the formation of isotypic Y6Ti4Al43, Dy6Ti4Al43, Ho6Ti4Al43compounds (hexagonal, P63/mcm). The microhardness value is 2.15 GPa for the Ti-49at.%Al-2at.%Ta sample.
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Bao, Bing Hao, i Xing Cheng Tian. "Study on Magnetoelectric Effect in Amorphous Ribbon /PZT Laminate Materials". Key Engineering Materials 464 (styczeń 2011): 448–52. http://dx.doi.org/10.4028/www.scientific.net/kem.464.448.

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Magnetoelectric(ME) effect in magnetoelectric laminate materials have potential application in many fields. In this paper, Fe78Si9B13 amorphous ribbons /PZT/amorphous ribbons sandwich structure laminate materials were fabricated. By theoretical analysis and experimental verification, we studied systemically on the characteristics of the magnetoelecric laminate materials, such as optimized bias magnetic field of the ME effect, ME voltage coefficient at low frequency and the resonant frequency of the magnetoelecric laminate element. ME effect can be used to develop new ac magnetic sensor and other devices.
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Snyder, Douglas E., i Erik D. Sapper. "See Me, Feel Me, Touch Me, Heal Me: A Contextual Overview of Conductive Polymer Composites as Synthetic Human Skin". Journal of Composites Science 6, nr 5 (12.05.2022): 141. http://dx.doi.org/10.3390/jcs6050141.

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The fields of polymer science, conductive composites, materials engineering, robotics, and human perception intersect at the development and application of synthetic human skin. To be accepted by human users, artificial human skin must meet several requirement benchmarks. Synthetic human skin must look realistic, but not be eerie or creepy, upsetting those using or interacting with the material. Synthetic skin must feel like human skin, including mechanical response, thermal conductivity, and tactile properties. Realistic synthetic human skin must be electrically conductive, so that the user may experience accurate sensations of touch and feel. Finally, synthetic human skin should possess some degree of self-healing behavior. This review provides a brief description of advances in these disparate aspects of synthetic skin science, from the perspective of a practicing conductive polymer composite scientist and engineer.
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Meyers, Kaylee Marie, i Keat Ghee Ong. "Magnetoelastic Materials for Monitoring and Controlling Cells and Tissues". Sustainability 13, nr 24 (10.12.2021): 13655. http://dx.doi.org/10.3390/su132413655.

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Advances in cell and tissue therapies are slow to be implemented in the clinic due to the limited standardization of safety and quality control techniques. Current approaches for monitoring cell and tissue manufacturing processes are time and labor intensive, costly, and lack commercial scalability. One method to improving in vitro manufacturing processes includes utilizing the coupled magnetic and mechanical properties of magnetoelastic (ME) materials as passive and wireless sensors and actuators. Specifically, ME materials can be used in quantifying cell adhesion, detecting contamination, measuring biomarkers, providing biomechanical stimulus, and enabling cell detachment in bioreactors. This review outlines critical design considerations for ME systems and summarizes recent developments in utilizing ME materials for sensing and actuation in cell and tissue engineering.
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Song, Hyunseok, Michael Abraham Listyawan i Jungho Ryu. "Core–Shell Magnetoelectric Nanoparticles: Materials, Synthesis, Magnetoelectricity, and Applications". Actuators 11, nr 12 (16.12.2022): 380. http://dx.doi.org/10.3390/act11120380.

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Nanoparticles with small diameters and large surface areas have potential advantages and are actively utilized in various fields related to biomedical and catalytic applications. Multifunctional applications can be achieved by endowing nanoparticles with piezoelectric, quantum dot, magnetothermal, and piezoluminescent properties. In particular, multiferroic magnetoelectric nanoparticles (MENPs) can generate electricity by coupling piezoelectric and magnetostrictive properties when an external magnetic field, which is harmless to the human body, is applied. In this regard, magnetoelectricity (ME) induced by a magnetic field makes MENPs useful for various biomedical and electrocatalytic applications. The ME voltage coefficients, which express the efficiency of energy conversion from magnetic field to electricity, show differences depending on the setup for ME measurements of MENPs. Therefore, numerous attempts have been made to optimize the ME characterization method to reduce measurement errors resulting from charge leakages caused by the specimen preparation, as well as to investigate the ME effect of a single nanoparticle. Our review is focused on the structures, syntheses (hydrothermal and sol–gel methods), activation mechanism, and measurement of magnetoelectricity, as well as applications, of core–shell MENPs.
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Rozprawy doktorskie na temat "ME MATERIALS"

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Stavlid, Nils. "On the Formation of Low-Friction Tribofilms in Me-DLC – Steel Sliding Contacts". Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7369.

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Girak, Susan. "forget me not: An exhibition –and– Creative Reuse: How rescued materials transformed my A/r/tographic practice: An exegesis". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2015. https://ro.ecu.edu.au/theses/1618.

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This thesis, comprising of a written exegesis, solo exhibition and an artist book, emerged from research undertaken by an artist-researcher-teacher. For that reason, a/r/tography was the overarching methodology used, incorporating a bricolage of methods to address a multifaceted study undertaken in two settings: a primary school classroom and an artist’s studio. A/r/tography is a multilayered interdisciplinary Arts education research methodology that correlates well with my expertise as a primary Visual Arts specialist. The methodology allowed me to immerse myself in both teaching and the artmaking process, as ways of gaining a deeper understanding of Visual Arts pedagogy. The purpose of the study was to examine what the impact of making art with discarded materials had on raising environmental consciousness, from the viewpoint of an artist-researcher-teacher. Additionally, this research was positioned within the United Nations Decade of Education for Sustainable Development (2005–2014) and Sustainability, a cross-curriculum priority in the Australian Curriculum. The aim of this research was to show that Visual Arts is an effective way to embed Sustainability in the curriculum. In a two-phase study, the role of artmaking to facilitate shifts towards sustainability was investigated among 12-year-olds and myself in my creative praxis. In Phase One, 20 primary school students, from an area of high socio-economic advantage, participated in a 10-session Visual Arts program, using discarded materials to make and exhibit artworks with an environmental focus. Then, as an artist, I followed the same brief as the students, resulting in an exegesis and two creative components: an artist book incorporated into the exegetical writing and a solo exhibition at Edith Cowan University’s Spectrum Project Space in October 2014. This study showed that the creative reuse of discarded materials promoted reflexivity and raised sustainable awareness, leading to positive attitudinal and behavioural shifts in both the students and myself. The outcome of my creative component was a catalyst for shifts in the way I made art and the way I taught Visual Arts. By immersing myself in the artmaking process, I questioned unsustainable artmaking processes and moved towards reducing my own environmental footprint. The symbiotic nature of a/r/tography meant that new knowledge gained in the studio could be transferred to the classroom. The results of the research are presented through this exegetical writing and an exhibition, which included: returning to techniques that promoted reflexivity; exploring the ephemeral through photography; and demystifying the artmaking process through an artist book. The most significant finding of this study was that the physical act of artmaking enabled the students and me to re-examine our behaviours and to reconsider the value of discarded materials, which in turn triggered shifts in our awareness towards sustainability. Self-initiated behavioural shifts in the students included reusing materials and reducing consumption. Further, the students were able to make personal connections between their behaviours and their environmental footprints. This has implications for teachers integrating Sustainability. Arts-led education provides an alternative approach to teaching Sustainability across the curriculum. A set of recommendations arising from the research include: to provide support mechanisms to assist in-service teachers to implement Visual Arts-led Sustainability programs in primary schools; to introduce a/r/tography into pre-service teacher training; and for REmida WA to provide professional learning to support innovative, low-cost, multimodal in-service teacher training for Visual Arts-led Sustainability programs.
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Templeton, Alan. "Studies of bismuth vanadate (Bi←4V←2O←1←1) and BiMeVOX (Me=W'6'+, Ta'5'+, Nb'5'+, Zr'4'+ and Ti'4'+) materials". Thesis, University of Aberdeen, 1996. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU528242.

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The oxide ion conductor bismuth vanadate (Bi4V2O11) can be doped with various metal cations, Me2+ to Me6+; Me partially substitutes for vanadium to produce a new family of solid electrolytes known as BiMeVOX (Bismuth Metal Vanadium Oxides. Bi4V2O11 is polymorphic having three forms α, β and γ; the high temperature form (γ) has high oxygen ion conductivity of comparable magnitude to existing solid electrolytes such as YSZ; however, this occurs at high temperatures (> 560°C). Doping Bi4V2O11 with Me ions, leads to stabilisation of the γ-phase to room temperature, thus producing a material with promising practical applications. The parent material, Bi4V2O11, is a non-stoichiometric phase forming a limited solid solution given by Bi4+yV2-yO11-y; by virtue of the variable Bi:B ratio this leads to a range of compositions for the BiMeVOX materials and hence the overall formula Bi4-yV2-x-yMexO11-y-σ. Thus, there is scope for a range of γ-phase compositions. The aims of this study were to - (1) investigate the Bi4+yV2-yO11-y solid solution and formation of stoichiometric Bi4V2O11 (i.e. y = 0); (2) optimise synthesis conditions of Me-doped Bi4V2O11 (Me = W6+, Ta5+, Nb5+, Zr4+ and Ti4+); (3) determine the compositional extent of each solid solution formed by using a variety of diffraction, thermal and microscopic techniques; (4) investigate stabilisation, to room temperature, of the high temperature gamma (γ) phase, formed on doping Bi4V2O11; (5) elucidate possible substitution mechanisms and initiate a crystallographic study of gamma phase materials. Bi4V2O11 : It is shown that stoichiometric Bi4B2O11 does not form, via solid state reaction, without precipitation of BiVoO4 (scheelite) as secondary phase; a slight excess of Bi (y ≈ 0.02) is required to form single phase material in this system.
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Meesala, Vamsi Chandra. "Nonlinear Effects in Contactless Ultrasound Energy Transfer Systems". Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/101752.

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Ultrasound acoustic energy transfer (UAET) is an emerging contactless technology that offers the capability to safely and efficiently power sensors and devices while eliminating the need to replace batteries, which is of interest in many applications. It has been proposed to recharge and communicate with implanted medical devices, thereby eliminating the need for invasive and expensive surgery and also to charge sensors inside enclosed metal containers typically found in automobiles, nuclear power plants, space stations, and aircraft engines. In UAET, energy is transferred through the reception of acoustic waves by a piezoelectric receiver that converts the energy of acoustic waves to electrical voltage. It has been shown that UAET outperforms the conventional CET technologies that use electromagnetic waves to transfer energy, including inductive coupling and capacitative coupling. To date, the majority of research on UAET systems has been limited to modeling and proof-of-concept experiments, mostly in the linear regime, i.e., under small levels of acoustic pressure that result in small amplitude longitudinal vibrations and linearized piezoelectricity. Moreover, existing models are based on the "piston-like" deformation assumption of the transmitter and receiver, which is only accurate for thin disks and does not accurately account for radiation effects. The linear models neglect nonlinear effects associated with the nonlinear acoustic wave propagation as well as the receiver's electroelastic nonlinearities on the energy transfer characteristics, which become significant at high source strengths. In this dissertation, we present experimentally-validated analytical and numerical multiphysics modeling approaches aimed at filling a knowledge gap in terms of considering resonant acoustic-piezoelectric structure interactions and nonlinear effects associated with high excitation levels in UAET systems. In particular, we develop a reduced-order model that can accurately account for the radiation effects and validate it by performing experiments on four piezoelectric disks with different aspect ratios. Next, we study the role of individual sources of nonlinearity on the output power characteristics. First, we consider the effects of electroelastic nonlinearities. We show that these nonlinearities can shift the optimum load resistance when the acoustic medium is fluid. Next, we consider the nonlinear wave propagation and note that the shock formation is associated with the dissipation of energy, and as such, shock formation distance is an essential design parameter for high-intensity UAET systems. We then present an analytical approach capable of predicting the shock formation distance and validate it by comparing its prediction with finite element simulations and experimental results published in the literature. Finally, we experimentally investigate the effects of both the nonlinearity sources on the output power characteristics of the UAET system by considering a high intensity focused ultrasound source and a piezoelectric disk receiver. We determine that the system's efficiency decreases, and the maximum voltage output position drifts towards the source as the source strength is increased.
Doctor of Philosophy
Advancements in electronics that underpinned the development of low power sensors and devices have transformed many fields. For instance, it has led to the innovation of implanted medical devices (IMDs) such as pacemakers and neurostimulators that perform life-saving functions. They also find applications in condition monitoring and wireless sensing in nuclear power plants, space stations, automobiles and aircraft engines, where the sensors are enclosed within sealed metal containers, vacuum/pressure vessels or located in a position isolated from the operator by metal walls. In all these applications, it is desired to communicate with and recharge the sensors wirelessly. Such a mechanism can eliminate the need for invasive and expensive surgeries to replace batteries of IMDs and preserve the structural integrity of metal containers by eliminating the need for feed through wires. It has been shown that ultrasound acoustic energy transfer (UAET) outperforms conventional wireless power transfer techniques. However, existing models are based on several assumptions that limit their potential and do not account for effects that become dominant when a higher output power is desired. In this dissertation, we present experimentally validated numerical and theoretical investigations to fill those knowledge gaps. We also provide crucial design recommendations based on our findings for the efficient implementation of UAET technology.
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Giard, Baptiste, i Sofia Karlsson. "Machine learning for the prediction of duplex stainless steel mechanical properties : Hardness evolution under low temperature aging". Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298415.

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Duplex stainless steels, DSS are stainless steels that consist of the two phases austenite and ferrite.  The DSS have superb properties and are widely used in industries such as nuclear power and in pressure vessels, pipes and in pipelines.  The use of DSS are limited due to embrittlement which occurs at temperatures from 250 to 550 oC. This imposes a general limited service temperature of 250 oC. The mechanism mainly responsible for the embrittlement is a phase separation occurring in the ferrite phase. Furthermore, there is a direct link between the phase separation and the mechanical properties:  the ferrite hardness increases whereas the toughness decreases under low temperature aging.  In this thesis, the low-temperature embrittlement of duplex stainless  steels  was  studied  through  machine learning  modelling  and  experimental hardness-  and  microscopy measurements.   The  resulting  model  describes  the  data with an accuracy, R-squared = 0.94.  In combination with the experimental results, nickel  was identified  as  an  important  parameter  for  the  hardness  evolution.   This work aims to provide a fundamental study for understanding the importance of alloying elements on the phase separation in DSS, and provides a new methodology via a combination of machine learning and key experiments for the material design.
Duplexa rostfria stål är rostfria stål som består av de båda faserna ferrit och austenit. De har extraordinära egenskaper och används brett inom industrin, t ex. i kärnkraftverk och  i  tryckkärl  och  pipelines.  Användningen av  duplexa  rostfria stål  är  begränsad p.g.a.  försprödning som uppstår i legeringarna vid temperaturer mellan 250-550 oC, vilket  medför  att  den  tillåtna  temperaturen  vid  användning  begränsas  till  under 250 oC.  Den  främsta  orsaken  till  försprödningen  är  en  fasseparation  i  den  ferrita fasen under åldring vid låg temperatur.  Vidare leder fasseparationen till mekaniska förändringar i ferritfasen: hårdheten  ökar  medan  segheten  minskar.   I  den här  rapporten  undersöks försprödningen  av  duplexa  rostfria  stål  vid  åldring  med hjälp av datormodellering med maskininlärning samt av experimentella hårdhets- och mikroskopiska  mätningar.   Modellen  hade  en  noggrannhet  (determinationsko- efficienten,  R2)  på  0.94.   Resultatet  från  modellen  visade  tillsammans  med de  experimentella  resultaten  att  nickel  är  ett  legeringsämne  som  har  stor betydelse  för hårdhetsökningen.  Detta  arbete  syftar  till  att  utgöra  en grundläggande  studie  för att förstå påverkan från olika legeringsämnen på fasseparationer i DSS, och bidrar med en ny metodik för materialdesign som kombinerar maskininlärning och utvaldaexperiment.
EIT RawMaterial Project ENDUREIT
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Elstro, Stephanie Jo. "25 Random Things About Me". Miami University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=miami1250637568.

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Bates, Hannah. "I Thought the Earth Remembered Me". VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5861.

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The forest is teeming with activity: fungi transform dead logs into nutrients, roots entangle themselves with the earth, and strong winds break resilient boughs. Like the forest, the human body functions according to a complex system of agents - from the micro bacteria in the gut to the pores of the skin. The built world has often been rendered in opposition to these processes of nature. As a vessel through which the world is experienced, the body is an intermediary between raw matter and fabricated things. The planet is suffused with human life, and there is a critical tension between human production and the well-being of the biosphere. Is there an ecological benefit to dissolving the division between the human-made and the organic? My exhibition, I Thought the Earth Remembered Me, integrates the ambiguous forms of the forest into mass-produced sheetrock walls in order to break down the boundary between the built and natural world. Through making, I hope the work unearths a way to be enchanted on a damaged planet.
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Repici, Michael. "Because My Garmin Told Me To: A New Materialist Study of Agency and Wearable Technology". Scholar Commons, 2019. https://scholarcommons.usf.edu/etd/7905.

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Wearable technologies are being adopted in increasing numbers and the market space appears poised for continued growth in virtually all areas, from medicine, to self-quantification, to sports. While the overwhelming majority of work on wearables has been done on their medical applications and their role in shaping identity, this dissertation examines the roles that wearable technologies play on the decision-making processes in athletic contexts. Using new materialism and Actor Network Theory as lenses, I attempt to break from the Cartesian model that places human subjectivity and intentionality at the center of a rhetorical situation and, rather, allow that non-human actants are agentive. I examine the interactions that age-group triathletes have with their wearable technologies and the shifting agencies that accompany those interactions. These interactions call on disparate human and non-human actors in forming a series of temporary, shifting networks that utilize a distributed agency in the decision making process.
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Fellenor, John. "Particular experiences : a psychosocial exploration of myalgic encephalomyelitis (ME) and its relationship with self, environment and the material world". Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.665427.

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Myalgic encephalomyelitis (ME), also referred to as chronic fatigue syndrome (CFS), is a symptomatically defined and debilitating condition that presents as a range of physiological and psychological effects. Post-exertional fatigue and ongoing low energy levels are cardinal features. Whilst ME-like conditions have been recognised for at least two hundred years, they have been characterised over recent decades by a fiercely contested debate as to whether aetiology is primarily psychological or physiological. ME sufferers experience profound changes to their self-perception, ability to maintain daily routines and activities and how they are perceived in terms of their capacity to carry out social roles, including illness-status. The contested aetiology results in-part from a climate of dualistic thought and the biomedical model upon which ME is treated and theorised. Whilst the effects of ME on self experience have been investigated from various qualitative and quantitative perspectives, the primary purpose of this thesis is to develop a psychosocial framework from which to explore previously neglected dimensions of the effect of ME on self experience. Developing a psychosocial understanding of ME is in keeping with a turn towards post-Cartesian and non-dualistic thinking. The second interconnected purpose of this thesis is to address the role played by the material environment and objects and to conceptualise their importance and relation to self and how it is affected by ME. This is currently absent in the literature on ME. Developing a psychosocial framework suitable for this purpose rested on a synthesis of Actor Network Theory (ANT) and a psychoanalytically influenced use of metaphor and metonymy. At the heart of this synthesis are the notions of relational ontology (Latour, 1997; DeLanda, 2002) and assemblage (Deleuze and Guattari, 1987; DeLanda, 2002; Hodder, 2012). A relational ontology focuses on the relations between disparate objects such as material artefacts, humans, other organisms and concepts and avoids prioritising any one ‘thing’ as more important than another. The notion of assemblage has emerged alongside ideas concerning complexity, chaos and indeterminacy and informs a vocabulary addressing the problem of causality, determination and the stability of social and psychological phenomena (Venn, 2006). As part of a psychoanalytically informed psychosocial framework these concepts enable an exploration of ME by bringing together disparate aspects such as everyday objects, experiences, symptoms and environments in a non-causal, non-dualistic and processual manner. The psychoanalytic element also enables an exploration of the unconscious and irrational aspects of experience, which is most pertinent with regards to the effects of ME. Thus, the premise of this research was to establish a psychosocial methodology and theoretical basis from which to explore the effects of ME on self experience. Moreover, this methodology was designed to engage with the complex, coincident and entangled nature of the symptoms, discourses, objects, material artefacts, environments and non-human organisms that ME appears to be comprised of. Methods were developed which enabled the researcher to be with and explore the day-to-day life and routines of eight ME sufferers in their everyday environments over a six month period. This involved working with the ME sufferers taking part primarily in their own homes and spaces around their home which they frequented, such as shopping malls and even a cemetery; in itself novel in terms of qualitative research into ME. Of these eight sufferers, three were male [age range 49 – 65; earliest formal diagnosis of ME occurring in 2005] and five females [age range 25 – 63; earliest diagnosis 2002]. Two sufferers were in paid employment, one was retired and five were unable to work due to their ME. Due to the extensive nature of the data, only 3 case studies, two male and three female, were selected for in-depth analysis. Cases selected were those that most clearly illustrated central analytic themes. Data comprised talk, audio-visual material and the affective responses of the researcher. Analytic methods were devised which initially adopted a thematic approach before metaphoric and metonymic equivalences were drawn between what ME sufferers discussed and aspects of the routines, objects and environments they were engaged with. This informed descriptions of how these things became networked, in an ANT sense, and how self experience was implicated. A key finding which emerged is the notion of debilitating spaces. This term captures the manner in which, for certain sufferers, the experience and hence the maintenance of ME was intrinsically enmeshed with their immediate physical environment. Further findings discussed include the way in which seemingly everyday objects such as food blenders can be co-opted by sufferers as a means of enhancing their self-experience in light of ME. Overall, the findings of this PhD are discussed in terms of the success and applicability of that premise and its contribution to the field of psychosocial approaches. The key assertion is that the methodology enhances an understanding of ME and its effects, highlighting the variable yet particular nature of ME and its effect on self experience and in incorporating the hitherto unconsidered range of objects outlined above.
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JORDÃO, SÍLVIA NOGUEIRA. "SHOW ME YOUR HOME AND THINGS AND I LL TELL YOU WHO YOU ARE: A STUDY OF THE MATERIAL UNIVERSE OF ELDERLY". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=25600@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
Este trabalho é resultado de minha experiência como integrante de equipe de Design de Produção da TV Globo e de minha participação no grupo de estudo sobre Design & Envelhecimento do Laboratório de Pesquisa Aplicada de Design, Memória e Emoção da PUC-Rio. Ele está fundamentado em premissas da Antropologia do Consumo e na ideia de que nosso universo material é a expressão de nossa cultura, crenças, valores, estilos de vida e personalidades e traz o registro de visitas a casas de idosos fictícios e idosos reais. As visitas a idosos da ficção foram realizadas nas casas das personagens Nenê (interpretada pela atriz Marieta Severo), Darlene (interpretada pela atriz Marília Pera), Violeta (interpretada pela atriz Glória Menezes) e Picucha (interpretada pela atriz Fernanda Montenegro). Essas visitas tiveram como base os procedimentos da atividade do Design de Produção que, junto com Cenografia e Figurino, monta a casa e as coisas das personagens a partir de seus respectivos perfis e sinopses. As visitas a idosos reais, por sua vez, foram realizadas na casa de nove moradores na Gávea, bairro da zona sul do Rio de Janeiro, e incluíram técnicas de observação participante e entrevistas etnográficas. Elas tiveram como base o caminho inverso percorrido pela atividade do Design de Produção e buscaram montar os perfis dos idosos reais a partir de suas casas e coisas. Este trabalho foi motivado pelo crescente e irreversível fenômeno do envelhecimento e longevidade populacional e pela constatação de que, apesar de numeroso e diverso o público com mais de 60 anos ainda é tratado como homogêneo. A imagem do velho frágil, doente e dependente e associada a asilos, bengalas, cadeiras de roda e fraldas geriátricas está em processo de mudança, mas ainda é recorrente em conversas, telas e páginas. Neste sentido, este trabalho pretende propor um método para conhecer as pessoas para quem se projeta em geral, e os idosos em particular, a partir de suas casas e coisas. Ele tem como missão contribuir com a construção de uma visão mais positiva, ampla e plural sobre a velhice e seu universo material.
This work is the result of my experience as a member of TV Globo s Production Design team of and my participation in the study group focused on Design & Aging in the Applied Research Laboratory of Design - Memory and Emotion of PUC-Rio. It brings reflections based on assumptions of the Anthropology of Consumption and on the idea that our material universe is the expression of our identity and our culture, beliefs, values, lifestyles and personalities. It also documents visits to homes of fictional elders and real elders. The fiction elders visits were held in the homes of the following characters: Nenê (played by Marieta Severo), Darlene (played by Marilia Pera), Violeta (played by Gloria Menezes) and Picucha (played by Fernanda Montenegro). They were based on Production Design procedures , that together with Set Design and Costume Design, build the house and characters things based on their respective profiles and synopses. The visits to the real elders homeswere conducted in nine residences in Gávea, neighborhood of Rio de Janeiro, and included participant observation techniques and ethnographic interviews. They were based on the reverse path taken by the activity of the Production Design and sought assemble profiles of real elders from their homes and things. This work was motivated by the growing and irreversible phenomenon of populational aging and longevity and by the fact that, despite numerous and diverse the audience over 60 years old is still treated as homogeneous. The image of the frail elder, sick and dependent is associated with nursing homes, canes, wheelchairs and adult diapers is in process of change, but it is still recurring in conversations, screens and pages. This work aims to propose a method to know the people for whom projects in general and the elderly in particular, from their homes and things. It s mission is to contribute to build a positive view, broad and plural about elderly and its material universe.
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Książki na temat "ME MATERIALS"

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J, Jennings Terry. Materials, me & my senses: Primary science. Redaktorzy O'Keeffe Margot i Pritchard Noel. Leamington Spa: Scholastic, 1990.

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Valcárcel, Emilio Díaz. Mi mamá me ama. Wyd. 4. Río Piedras, P.R: Editorial Cultural, 1988.

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Me too. London: Dorling Kindersley, 1993.

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Meister, Cari. Me fascinan los árboles. New York: Children's Press, 2005.

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Alcantara, Ricardo. Me marcho adios! Barcelona: Joaquin Turina, 2001.

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Los gatos me gustan más. Chicago: Childrens Press, 1988.

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Bolchazy, Marie Carducci. Who loves me? =: Quis me amat? Wauconda, Ill: Bolchazy-Carducci Publishers, 2003.

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Ajanta, Guhathakurta, i Karkuzhali, red. Carry me, mama! Chennai: Tulikā Publishers, 2014.

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Meister, Cari. Me fascinan los árboles. New York: Children's Press, 2011.

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Ligo na u, lapit na me. Pasay City: Visprint, 2009.

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Części książek na temat "ME MATERIALS"

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Green, Allen T. "Me and AE -The Early Years 1962 – 1982". W Advanced Materials Research, 3–14. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-420-0.3.

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Zhao, Ya Zhong, Fu Sheng Pan, Jian Peng i Jun Zhou. "Annealing Process Optimization of a ME Wrought Magnesium Alloy". W Materials Science Forum, 351–54. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.351.

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Shi, Zhan, Mingyue Xu, Qun Huang, Shuiyuan Yang, Yong Lu, Jiajia Han, Cuiping Wang i Xingjun Liu. "Improvement of the Thermal Stability of Laminated Magnetoelectric (ME) Composites". W Advanced Functional Materials, 207–13. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0110-0_24.

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Takeuchi, Yuuichi, Mitsuhiro Kataoka, Tsunenobu Kimoto, Hiroyuki Matsunami i Rajesh Kumar Malhan. "SiC Migration Enhanced Embedded Epitaxial (ME3) Growth Technology". W Silicon Carbide and Related Materials 2005, 251–54. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-425-1.251.

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Trapalis, C. C., T. Vaimakis, A. Kharlamov, M. Kokkoris i G. Kordas. "Nanostructured MeSiO2 (Me=Ag, Cu) Coatings with Antibacterial Activity". W Nanostructured Materials and Coatings for Biomedical and Sensor Applications, 41–49. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0157-1_4.

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Cozmuta, Ioana. "How Computational Chemistry Has Launched Me Hypersonically Towards Microgravity Research". W Computational Materials, Chemistry, and Biochemistry: From Bold Initiatives to the Last Mile, 329–81. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-18778-1_17.

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Shulga, Yu M., D. V. Schur, S. A. Baskakov, A. P. Simanovskiy, A. A. Rogozinskaya, A. A. Rogozinskiy i A. P. Mukhachev. "XRD Patterns of Cathode Deposits Formed in Electric Arc Sputtering Zr-Me-Graphite Electrodes". W Hydrogen Materials Science and Chemistry of Carbon Nanomaterials, 137–42. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/1-4020-2669-2_12.

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Lin, Zhang, Lin Guoqiang, Yao Qing i Ji Shouhua. "Influence of The Cu Content on the Structure and Properties of Me-Cu-N (Me=Zr,Ti) Nanocomposite Films Deposited by Pulsed Bias Arc Ion Plating". W Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing, 1929–37. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-48764-9_240.

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Kerimova, E. M., S. N. Mustafaeva, A. I. Jabbarly, G. Sultanov, A. I. Gasanov i R. N. Kerimov. "New Magnetic Semiconductors on the Base of TlBVI-MeBVI Systems (ME-FE, CO, NI, MN; B-S, SE, TE)". W Physics of Spin in Solids: Materials, Methods and Applications, 195–206. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/1-4020-2708-7_13.

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Bianchi, Bernardo. "In the Labyrinth of Emancipation". W Materialism and Politics, 163–80. Berlin: ICI Berlin Press, 2021. http://dx.doi.org/10.37050/ci-20_09.

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In this chapter, I analyse the concept of emancipation in terms of a philosophical anthropology of autonomy, which allows me to assess the stakes of the historical development of the classical form of the concept of emancipation and its connection to the idea of minority, orUnmündigkeit. My thesis is that this conception reaffirms a hierarchical conception concerning the relationship between knowledge and political action, leading to forms of tutelage based on the necessity of education. In opposition to such a view, I draw on a particular conception of materialism, which posits the reciprocal constitution between activity (Tätigkeit) and subjectivity.
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Streszczenia konferencji na temat "ME MATERIALS"

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Volk, T. R., M. A. Ivanov, F. Ya Shchapov i N. M. Rubinina. "Photoinduced Charge Transport in Optical Damage Resistant LiNbO3:Me (Me = Mg, Zn)". W Photorefractive Materials, Effects, and Devices II. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/pmed.1991.tuc25.

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Photoinduced charge transport in LiNbO3 is defined by presence of a Fe-like impurity, Fe2+ being the donor, Fe3+-the acceptor of electrons1. Two level scheme gives the linear dependence of photoconductivity (that is of inverse response 2 times of photorefraction) on the light intensity2.
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Neruda, Marek, i Lukas Vojtech. "Heating ability of electrically conductive textile materials". W 2014 16th International Conference on Mechatronics - Mechatronika (ME). IEEE, 2014. http://dx.doi.org/10.1109/mechatronika.2014.7018332.

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Maga, Dusan, Jiri Hajek, Marek Neruda i Lukas Vojtech. "FE model of EM shielding textile materials". W 2014 16th International Conference on Mechatronics - Mechatronika (ME). IEEE, 2014. http://dx.doi.org/10.1109/mechatronika.2014.7018310.

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Volk, T. R., N. M. Rubinina i S. Stizza. "Optical Damage Resistant Impurities in Lithium Niobate". W Photorefractive Materials, Effects, and Devices II. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/pmed.1991.tuc26.

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Magnesium1-3, zinc4-6 and some other impurities (substituting mainly for the lithium sites) drastically change optical properties of LiNbO3. In particular the value of optical damage (photorefraction) in LiNbO3:Me (Me = Mg,Zn,…) is sharply reduced compared with undoped LiNbO32-6. Similarly Me impurities tend to supress so-called "dark trace” effect4-6 (that means stable darkening under intensive visible laser radiation).
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Priya, Krovi Kusuma. "Comparison of Efficiency for Synchronous Buck Converter Using Si and WBG Materials". W 2022 20th International Conference on Mechatronics - Mechatronika (ME). IEEE, 2022. http://dx.doi.org/10.1109/me54704.2022.9983108.

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Nam Pham, Ngoc, Jan Leuchter i Quang Huy Dong. "FPGA-based measurement instrument for the ERT applications of aerospace composite materials". W 2022 20th International Conference on Mechatronics - Mechatronika (ME). IEEE, 2022. http://dx.doi.org/10.1109/me54704.2022.9983440.

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DeGiorgi, Virginia G., Peter Finkel, Lauren Garten i Margo Staruch. "Transduction Using Functional Materials: Basic Science and Understanding at the U. S. Naval Research Laboratory". W ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/smasis2019-5501.

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Abstract Recently NRL researchers have embarked on a basic research effort “Tuning Giant Magnetoelectric Properties in Phase Transformation Multiferroics” focused on multifunctional materials for energy transduction and conversion. Multiferroic materials combine at least two coupled ferroic properties and are used in multiple applications including magnetic field sensors, energy harvesting devices, non-volatile memory and antennas. There are very few single phase multiferroic materials, and they normally have relatively low magnetoelectric (ME) coupling coefficient. In contrast, engineered materials such as ME composites fabricated from piezoelectric and magnetostrictive materials can show multiple orders of magnitudes increase in the ME coupling coefficient. The optimal design of ME composites would lead to conditions of maximum response (strain, induced voltage, or field) with minimum applied electric or magnetic fields, providing advanced materials for transduction, sensing, energy harvesting and other applications. That is why NRL researchers are working on piezoelectric materials with enhanced properties due to a phase transformation that would minimize the stimuli needed to achieve large strains. Key to the successful design and fabrication of ME composites is an understanding of interface characteristics as well as individual material components. In this paper we will review the current status of work at NRL on engineered multiferroic composites comprised of piezoelectric and magnetostrictive materials coupled through strain. There are still many open questions about the interfacial properties as well as the individual component materials. Details will be presented from recent work on material characterization under repetitive cycling, interface characteristics, and stress/electric/thermal effects on driving the phase transition in a relaxor ferroelectric single crystal.
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Blanquet, E., A. M. Dutron, V. Ghetta, C. Bernard i R. Madar. "LPCVD Me-Si-N (Me = Ta, Ti, W, Re) diffusion barriers in Si/SiO,/Cu metallizations". W European Workshop Materials for Advanced Metallization. MAM'97 Abstracts Booklet. IEEE, 1998. http://dx.doi.org/10.1109/mam.1998.887510.

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Sridhar, Sudersan, i Arockiarajan Arunachalakasi. "A Two Dimensional Finite Element Model for Prestress Effects on Magnetoelectric Laminated Composites". W ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2244.

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Abstract Magnetoelectric (ME) composites are viable candidates for use in numerous applications owing to their multifunctional capabilities. These composites develop voltages across the piezo-electric phase under external magnetic fields. Numerous models available in literature consider the magnetostriction under pure magnetic loading. However, fabrication of ME composites results in development of compressive stresses on the magnetostrictive layer, which leads to a poor ME response and hence an initial effective tensile prestress to the magnetostrictive phase is required to either compensate or enhance the ME coupling. In this work, the ME response of an unsymmetric laminate is predicted using a finite element procedure based on Mindlin plate theory, giving due consideration the magnetostrictive nonlinearity, the direction of the applied field and the effect of the stress state on the magnetostrictive response. The model predicts that initial shear stresses, positive or negative, provide the best enhancement to the ME coupling.
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McIntyre, Kevin J., Walter G. Hahn i William F. Jones. "Maskless scanning technique for excimerlaser materials processing". W OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/oam.1993.me.3.

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A variety of laser techniques for creating gradient material removal profiles have previously been developed. Many of these techniques have been applied to altering the surface figure of corneas among other optical surfaces.
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Raporty organizacyjne na temat "ME MATERIALS"

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Christoforidou, Eirini, Antonio Bobet, Tommy Nantung i Philippe L. Bourdeau. Use of Geosynthetics on Subgrade and on Low and Variable Fill Foundations. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317437.

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There are significant problems during construction to establish an adequate foundation for fills and/or subgrade for pavements when the natural ground has low-bearing soils. Geosynthetics such as geogrids, geotextiles, and/or geocells could provide a less time-consuming, costly alternative for establishing an adequate foundation for the fill and/or subgrade. There is extensive evidence in the literature and on DOTs practices about the suitability of using geotextiles in pavements as separators. Previous studies have also shown that the use of geogrids in flexible pavements as a reinforcing mechanism could decrease the thickness of the base layer and/or increase the life of the pavement. In this study, analyses of selected pavement designs using Pavement ME—while considering geogrid-enhanced base or subgrade resilient modulus values—showed that geogrid-reinforcement, when placed at the interface between subgrade and base, did not produce significant benefits and only a modest increase in pavement life was predicted. In addition, parametric finite element analyses were carried out to investigate the potential benefits of placing a geogrid at the base of a fill over a localized weak foundation zone. The analyses showed that the use of geogrids is beneficial only when: (a) the stiffness of the weak foundation soil is about an order of magnitude smaller than the rest of the foundation soil; and (b) the horizontal extent of the weak foundation soil is at least 30% of the base of the embankment foundation. The largest decrease in differential settlements at the surface of the fill, resulting from geogrid-reinforcement, was less than 20% and, therefore, it is unlikely that the sole use of geogrids would be sufficient to mitigate differential settlements. Based on previous studies, a geocell mattress, which is a three-dimensional geosynthetic filled with different types of materials, could act as a stiff platform at the base of an embankment and bridge over weak zones in the foundation. However, given the limited experience in Indiana on the use of geocells, further research is required to demonstrate that geocells can be effectively used in place of other reinforcement methods.
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Yatsymirska, Mariya. Мова війни і «контрнаступальна» лексика у стислих медійних текстах. Ivan Franko National University of Lviv, marzec 2023. http://dx.doi.org/10.30970/vjo.2023.52-53.11742.

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The article examines the language of the russian-ukrainian war of the 21st century based on the materials of compressed media texts; the role of political narratives and psychological-emotional markers in the creation of new lexemes is clarified; the verbal expression of forecasts of ukrainian and foreign analysts regarding the course of hostilities on the territory of Ukraine is shown. Compressed media texts reflect the main meanings of the language of the russian-ukrainian war in relation to the surrounding world. First of all, the media vocabulary was supplemented with neologisms – aggressive and sad: “rashism”, “denazification”, “katsapstan”, “orks”, “rusnia”, “kremlins”, “parebrik”, “in the swamps”, “nuclear dictator”, “putinism”, “two hundred” and others. Numerals acquired new expressive and evaluative meanings: “200s” (dead), “300s” (wounded), “400s” (russian military personnel who filed reports for termination of the contract), “500s” (hopelessly drunk russian soldiers, alcoholics who are unable to perform combat tasks). The language of war intensified the slogans of the struggle for state independence and people’s freedom. The scope of the greeting “Glory to Ukraine! – Glory to Heroes!”. New official holidays have appeared in the history of Ukraine since 2014: “Heroes of the Heavenly Hundred” Day (February 20), “Ukrainian Volunteer Day” (March 14), “Defenders and Defenders of Ukraine Day” (October 14), “Volunteer Day” (5 December). As you know, the professional holiday of the military is the Day of the Armed Forces of Ukraine” (December 6). A special style is characteristic of media texts on military topics: “Iron Force of Ukraine” (Iron Force of Ukraine), “digitize the Army” (for effective simulation of military operations); “grain corridor” (export of Ukrainian grain to African and European countries); “don’t let Ukraine lose” (the position of the Allies at the first stage of the war), “Ukraine must win!” (the position of the Allies in the second stage of the war); “in the Russian-Ukrainian war, the thinking of the 19th century collided with the thinking of the 21st century”, “a politician is a person who understands time” (Grigori Yavlinskyy, Russian oppositionist); “aggressive neutrality” (about Turkey’s position); “in Russia”, “there, in the swamps” (in Russia), “weak, inadequate evil” (about Russia), “behind the fence”; “a great reset of the world order”; “technology of military creativity”; “they are not Russian and not Ukrainian, they are Soviet”, “people without mentality”, “in Ukraine and without Ukraine” (Vitaly Portnikov about a separate category of Russian-speaking citizens in Ukraine); “information bed of Ukraine” (about combat operations on the front line; “when a descendant asks me what I did in those terrifying moments, I will know what to answer. At the very least, I did not stand aside” (opinion of a Ukrainian fighter). Compressed in media texts is implemented in the headline, note, infographic, chronicle, digest, help, caption for photos, blitz poll, interview, short articles, caricature, visual text, commercial, etc. Researchers add “nominative-representative text (business card text, titles of sections, pages, names of presenters, etc.) to concise media texts for a functional and pragmatic purpose.” accent text (quote, key idea); text-navigator (content, news feed, indication of movement or time); chronotope”. A specific linguistic phenomenon known as “language compression” is widespread in media texts. Language compression is the art of minimization; attention is focused on the main, the most essential, everything secondary is filtered out. Compression uses words succinctly and sparingly to convey the meaning as much as possible. For example, the headline “Racism. What is the essence of the new ideology of the Russian occupiers?”. The note briefly explains the meaning of this concept and explains the difference from “nazism” and “fascism”. Key words: compressed media text, language compression, language of war, emotional markers, expressive neologisms, political journalism.
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Velásquez Morales, Alejandra, Paola Elena León Velasco, Ángela Patricia Alarcón i Diana Marcela Walteros. Análisis espacial de COVID-19 en población procedente del exterior en Colombia, marzo de 2020 - octubre de 2021. Instituto Nacional de Salud, 2021. http://dx.doi.org/10.33610/01229907.2021v3n4a4.

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Introducción: El alto flujo migratorio de personas procedentes del exterior implica mayor riesgo de propagación de SARS CoV2 en el territorio nacional. En Colombia desde marzo de 2020 a 31 de octubre de 2021 se han confirmado 67 787 casos en población extranjera. El objetivo es caracterizar epidemiológicamente la población extranjera de SARS CoV2 en el Sistema de Vigilancia de Salud Pública (Sivigila) desde marzo de 2020 a octubre de 2021. Materiales y métodos: estudio transversal observacional, con fuente primaria de datos de Sivigila desde marzo 2020 a octubre de 2021. Se calcularon medidas de tendencia central y dispersión, media y desviación estándar de las variables cuantitativas y proporciones para variables cualitativas. Se realizó análisis univariado y bivariado, se estimó razón de momios entre antecedentes, comorbilidades, edad y sexo, considerando estadísticamente significativos los valores p <0,05. Se realizó análisis espacial para identificar entidades territoriales de riesgo y procedencia de los casos importados. Resultados: se identificaron 67 893 casos de COVID 19 de población extranjera captada por la variable nacionalidad en el Sivigila. El promedio de edad fue de 35,8 ±15,8 (Me=33), la edad mínima fue de 0 años y la máxima 114 años. La variabilidad fue heterogénea (CV=42,81 %). El sexo predominante fue el masculino con el 51,9 % (n=35 203), femenino con 48,1 % (n=32 690). La ciudad con más casos corresponde a Bogotá con el 49,8 % de los casos (n=33 868), seguido del departamento de Antioquia con el 19,73 % (n=13.398), Valle del Cauca con el 5,64 % (n=3827) y Norte de Santander con 3,89 % (n=2640), El distrito de Barranquilla con 3,09 % (n=2098). Conclusión: en la población extranjera el número de casos es mayor en hombres, con una edad entre 30 a 39 años y 20 a 29 años. Se identificó que las muertes tienen una asociación con las comorbilidades de VIH y ser fumador. Se recomienda continuar con el seguimiento de esta población con el fin de identificar características demográficas de mayor vulnerabilidad y áreas de mayor afluencia para focalizar acciones de mitigación y control.
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