Relevant bibliographies by topics / Material permanence

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Material permanence'

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

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Journal articles on the topic "Material permanence"

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Santos, Silvana Sidney Costa, Bárbara Tarouco Da Silva, Edison Luiz Devos Barlem, and Russilene Da Silva Lopes. "O papel do enfermeiro na instituição de longa permanência para idosos." Revista de Enfermagem UFPE on line 2, no. 3 (June 29, 2008): 291. http://dx.doi.org/10.5205/reuol.351-11415-1-le.0203200812.

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ABSTRACTThis update article propose is to enhance the gerontogeriatric nurse field and its aim was to identify the nurse role in the seniors’ long permanence institution. Through this propose, the data from gerontology and Nursing/Health bibliography, the acquired experience in work of permanent extension and, mainly, the authors' professional experience in seniors’ long permanence institution were used. Approached questions: nurse importance in a seniors long permanence institution; functions of a nurse in a seniors’ long permanence institution; nurse perspectives in a seniors’ long permanence institution: the multi/interdisciplinaty. To act as nurse in a seniors’ long permanence institution becomes an emerging and promising professional field. Descriptors: nursing; elder; asylum. RESUMOEste artigo de atualização se propõe a ampliar o campo da Enfermagem Gerontogeriátrica, tendo por objetivo identificar o papel do enfermeiro na Instituição de Longa Permanência para Idosos. Com este propósito, foram utilizadas como fonte de dados material bibliográfico da Gerontologia e da Enfermagem/Saúde, a experiência adquirida em trabalho de extensão permanente, e principalmente, a vivência profissional dos autores em Instituição de Longa Permanência para Idosos. Questões abordadas: importância do enfermeiro em uma Instituição de Longa Permanência para Idosos; funções do enfermeiro em uma Longa Permanência para Idosos; perspectivas do enfermeiro em uma Instituição de Longa Permanência para Idosos: a multi/interdisciplinaridade. Atuar como enfermeiro em uma Instituição de Longa Permanência para Idosos torna-se um campo profissional emergente e promissor. Descritores: enfermagem; idoso; asilo.RESUMENEsto articulo de actualización propone ampliar el ámbito de la Enfermería Gerontogeriátrica, teniendo por objeto identificar el papel del enfermero en la Institución de Larga Permanencia para Ancianos. Con este propósito, fueron utilizados como fuente de datos material bibliográfico de Gerontología y de Enfermería/Salud, la experiencia adquirida en el trabajo de extensión permanente, y principalmente, la vivencia profesional de los autores en Institución de Larga Permanencia para Ancianos. Temas tratados: importancia del enfermero en un ILPI; funciones del enfermero en una residencia de ancianos; Perspectivas del enfermero en esta institución: la multi/interdisciplinariedad. Actuar como enfermero en un Institución de Larga Permanencia para Ancianos tornase un campo profesional emergente y prometedor. Descriptores: enfermería; anciano; asilo.
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Kan, Ayşe Ülkü. "The effect of using augmented reality based teaching material on students' academic success and opinions." African Educational Research Journal 9, no. 1 (March 30, 2021): 273–89. http://dx.doi.org/10.30918/aerj.91.21.035.

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The purpose of this research is to determine the effect of course material developed with augmented reality (AR) technology in teaching subjects related to coding on students' academic achievement, their level of permanence in learning and their opinions on the process. The mixed method was used in the study. In the quantitative dimension of the research, semi-experimental design with pretest-posttest control group, and in qualitative dimension phenomenology pattern were preferred. The quantitative data of the research were collected with the achievement test and the qualitative data were collected with a semi-structured interview form. The study group consists of 64 students attending a university in Computer Programming department in Turkey. There are 34 students in the experimental group and 30 students in the control group. The prepared achievement test was applied to the students as pretest, posttest and permanence test. After the application, interviews were made with 15 students selected from the experimental group. As a result of the research, it is seen that the academic achievement and permanence levels of students in the experimental group using AR course material for teaching coding education are higher than the students in the control group. According to the results obtained from the qualitative dimension of the research, it has been determined that AR technology provides many advantages such as efficiency, permanence, comprehensibility and convenience on learning; accordingly, it has been suggested that it should be expanded in different courses and fields.
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Boyce, Peter B. "Electronic Publishing in Astronomy." Highlights of Astronomy 11, no. 1 (1998): 499–503. http://dx.doi.org/10.1017/s1539299600021882.

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AbstractLinks are important. The providers of electronic astronomical data are linked together the way no other science is. Electronic journals are part of this distributed, linked resource. Permanence is important. The AAS journals use a new publishing process which ensures the ability to maintain permanent access to our electronic journals. Process is important. With the right process, we have been able to add links automatically to our journal; links to references, links to citations (where the electronic material exists) and internal links for ease of navigation within the journal. Readers like this. Links are important.
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Torrent, Horacio, Olga Paterlini, Anna Braghini, and Laura Cuezzo. "Modern Heritage, organic space, material permanence: Torres Posse House in Tafí del Valle." Modern Houses, no. 64 (2021): 42–49. http://dx.doi.org/10.52200/64.a.ffora3tr.

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The Torres Posse House (1957-1958) is a testimony to the particular forms that the modern house took in the context of northern Argentina, and at the same time shows how the conservation and sustainability of modern heritage come in large part from the quality of its original project. Built to enjoy the holidays, it was rationally organized, according to the demands of economy, topography of the site, climate, and orientation. The gallery, the most memorable space, is a typological approach that remains in good condition. The project established a stone box within which to arrange a demanding interior program with total freedom. The durability of the material proposed it as a modern architecture, capable of transcending the obsolescence of the modern image to resist the passage of time and aging without conflict.
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Zeller, Christoph. "Moment and Permanence in Wolf Vostell’s Performance Art." Poetica 51, no. 1-2 (September 22, 2020): 170–94. http://dx.doi.org/10.30965/25890530-05101005.

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Abstract Scholars hold that performance art wants to seize the moment, cannot be preserved or put on display, and necessarily remains outside the cultural archive. In contrast, this essay stresses the medial and material aspect of performance art and highlights the temporal opposition of presence and permanence as a feature of written documents. The linguistic origins of performance art and its temporal nature are a key to understanding Wolf Vostell’s artworks. His relationship to poetry and language has only recently received attention. Vostell’s drafts, notes, invitations, manifestos, score cards, correspondences, and books form the basis of a vast collection that create permanence beyond the fleetingness of the happening. Central to the following investigation is the temporal flux of Vostell’s concept of “dé-coll/age,” the way in which language informs his aesthetics, and the role that the museum plays in his artistic considerations.
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Millstein, Marianne. "‘If I Had My House, I’d Feel Free’: Housing and the (Re)Productions of Citizenship in Cape Town, South Africa." Urban Forum 31, no. 3 (July 29, 2020): 289–309. http://dx.doi.org/10.1007/s12132-020-09397-2.

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Abstract While urban divisions are commonly emphasized in urban studies, there has been less emphasis on reproductions and contestations of divides within marginal urban spaces. This paper explores the dynamics of juxtaposed differences related to housing and urban citizenship in Delft, Cape Town. Delft is a microcosm of thirty years of official housing interventions in post-apartheid South Africa. It is also a space in which differences of urban formality and informality and of permanence and temporariness co-exist, and where housing is at the centre of community politics. This is driven by residents’ perceptions, interpretations and negotiations of differentiated housing rights and opportunities, residential categories and identities and notions of belonging. A particular manifestation of juxtaposed material and temporal differences in housing infrastructure is the construction of temporary relocation areas (TRAs). The multifaceted challenges with the TRAs in Delft illustrate the political nature of housing infrastructure as reported by (Lemanski 2019a, b) and how citizen-making is shaped in and through articulations of formality and informality, and of permanence and temporariness. This informs a politics of citizenship where the precariousness of permanent temporariness as reported by (Yiftachel 2009) for those living in the TRAs is set against those whose right to secure housing is realized, giving them recognition and permanence as ‘proper’ citizens. These dynamics may simultaneously inform rights-based claims to citizenship through collective struggles and individual actions, and localized forms of exclusion from the project of citizenship.
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Cousins, Jennifer. "Disabled Children Who Need Permanence: Barriers to Placement." Adoption & Fostering 29, no. 3 (October 2005): 6–20. http://dx.doi.org/10.1177/030857590502900303.

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Disabled children wait longer than other children for permanent new families and some never achieve a family for life. Jennifer Cousins explores the barriers that make disabled children's pathway to a family so problematic. It is argued that only with this knowledge can the necessary changes be made on behalf of this vulnerable group of young people. Over several months during 2003 and 2004, BAAF's Opening Doors Disability Project ran a series of workshops across England to explore this complex subject with practitioners and carers. This paper includes the many ideas that emanated from these workshops, plus research material and the author's own views. Problems and barriers emerged in the recruitment, assessment and support of families; in the profiling and placing of children; at management level in the training and development of staff; in departmental structures and in diminished resources. All pervasive is the negativity and discrimination which affects people with impairments. It is argued that everyone engaged in children's services and family placement has a responsibility to promote the interests of disabled children by tackling the barriers identified here. In so doing, the placement chances for all children will be enhanced.
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Budi Santosa, Revianto, Josef Prijotomo, and Murni Rachmawati. "Considering Ephemeral Monuments: Towards a Greener Architectural Theory." Applied Mechanics and Materials 747 (March 2015): 192–97. http://dx.doi.org/10.4028/www.scientific.net/amm.747.192.

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The existence of buildings employing perishable material, however, is often marginalized partly because architecture is primarily understood as permanent structure built to last forever. This notion is heavily supported in Western architectural theory considering “permanence” (or “firmitas” in Vitruvian term) as one of the fundamental characteristics of architecture, especially monumental architecture which is intended to be “eternal”. To construct a permanent architecture, in general, requires greater amount of resources compared to the ephemeral. The marginalization of ephemeral architecture causes the depletion of resources due to the effort to make most of the buildings permanent since only those which withstand the ravage of time are deemed valuable as architecture This paper explores some meaningful pieces of architecture having values of monuments in Java yet they are constructed as ephemeral architecture requiring periodical renewal. The discussion on these ephemeral monuments will focus on the way perishable material is composed, the way renewal actions are conducted and the meaning of the monuments for their people are enhanced by these actions. In the conclusion, some criticism towards mainstream architectural theory is addressed by including ephemerality in the notion of [monumental] architecture so that we may proceed towards greener architectural theory in which the ephemeral has respectable roles.
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Subbotskii, E. V. "Existence as a Psychological Problem: Object Permanence in Adults and Preschool Children." International Journal of Behavioral Development 14, no. 1 (March 1991): 67–82. http://dx.doi.org/10.1177/016502549101400104.

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Preschool children and adults observed an instance of object discontinuity. Despite the fact that, in conversation, subjects denied the possibility of material objects that lack permanence of existence, most of them dealt with the phenomenon as if magic was involved in the transmogrification of a postage stamp. The subjective probability of belief in object discontinuity was similar to that of belief in the existence of other enigmatic phenomena, such as UFOs, parapsychological phenomena, or the Loch Ness monster. The role of adults' and children's beliefs in discontinuous objects is discussed.
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Gupta-Nigam, Anirban. "Plastic Flowers: Overlooking Resource Scarcity in Postwar America." Theory, Culture & Society 37, no. 6 (May 14, 2020): 111–33. http://dx.doi.org/10.1177/0263276420917468.

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This essay historicizes cultural and psychic economies in the postwar United States under the sign of material scarcity. It situates the proliferation of plastic flowers in domestic space within a context of bureaucratic anxieties surrounding natural resource scarcity, and trends toward ‘outdoor living’ that were an offshoot of the ideology of economic growth. Interrogating repeated, if relatively unexamined, invocations of ‘anxious’ suburban subjects in descriptions of postwar society, the essay suggests that plastic flowers shored up a sense of stability and permanence at a time when nuclear annihilation, Cold War paranoia, and population growth combined to render life uncertain and potentially unsustainable. The essay concludes by reflecting on how legacies of that epoch – and the fiction of permanence offered by plastic flowers – endure in contemporary fantasies of limitless progress.
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Dissertations / Theses on the topic "Material permanence"

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Touw, Katrina. "Firmitas re-visited: Permanence in Contemporary Architecture." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2858.

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This thesis proposes that the concept 'permanence' is relevant at the beginning of the twenty first century. It examines why the term, while perhaps pertinent in addressing the disposability of architecture in Western society, seems anachronistic. The study reviews the seeming inaccessibility of the term in its contested and plural interpretations, and reviews problems in its definition and relevance.

A close examination of definitions, interpretations and contemporary approaches is provided in order to create a conceptual framework that reveals complex implications of the term. Four strategies for understanding the concept are offered: 'realms versus modes', definitions, a distillation of four positions relating to permanence, and an inquiry into contemporary issues relating to the concept. 'Absolute' and 'relative' realms illuminate a scope for permanence, and 'static' and 'dynamic' modes are discussed. A series of definitions are reviewed that reveal nuance in implications. An analysis of four essays on permanence is included, one from the beginning of the twentieth century and three from the end. This section reveals a series of conflicts relating to the way contemporary Western society uses and understands the term.

Permanence within architecture is widely associated with the Vitruvian definition of firmitas: mass and solidity crafted to endure eternally. Vitruvius' employment of 'permanence' is used as a grounding definition and a fundamental reference for the term's evolution into contemporary usage. In observing the endurance of the original Vitruvian term today, a disconnect becomes evident: absolutism in a society defined by relativity. This thesis argues for the critical significance of the term at a pivotal point in history in addressing the problem of disposable architecture on both a cultural and ecological level. Final open-ended questions are raised that consider staggering construction and demolition waste statistics, implying that permanence could play a significant role in effective responses to a global environmental crisis.
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Santos, Dyane Brito Reis. "Para além das cotas: a permanência de estudantes negros no ensino superior como política de ação afirmativa." reponame:Repositório Institucional da UFBA, 2009. http://www.repositorio.ufba.br/ri/handle/ri/11778.

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Esta Tese de Doutorado tem como principal objetivo, analisar como as Políticas Institucionais de Permanência têm sido elaboradas e/ou incorporadas pela Universidade Federal da Bahia e qual o significado material e simbólico desta permanência. A política de reserva de vagas nas universidades públicas brasileiras, como parte das Políticas Públicas de Ações Afirmativas, existe no país desde o ano de 2002, mas somente em 2005 - por força das pressões exercidas pelos movimentos estudantis e Movimento Negro - a Universidade Federal da Bahia altera a sua resolução que dispõe sobre o sistema vestibular e implementa a reserva de vagas em seus cursos superiores. As políticas de acesso ao ensino superior trouxeram a presença maciça de estudantes pretos e pobres a cursos que historicamente não se observava esta “nova presença”. Os estudantes ingressos pelo sistema de reserva de vagas também encontraram inúmeras e agudas dificuldades para permanecer no curso superior, tanto a nível material (recursos financeiros) quanto ao nível simbólico, aqui entendido como as possibilidades de identificar-se com o grupo dos demais universitários, ser reconhecido e pertencer a ele. A partir das categorias analíticas de Kant e Lewis, definimos o conceito de permanência como o ato de durar no tempo que deve possibilitar não só a constância do indivíduo, como também a possibilidade de transformação e existência. A permanência deve ter o caráter de existir em constante fazer e, portanto, ser sempre transformação. Para atender aos objetivos da pesquisa e buscar possíveis respostas ao problema, foi realizada uma abordagem qualitativa com estudos quantitativos, na qual buscamos aplicar um instrumento com 100 estudantes autodeclarados negros, pretos ou pardos e em sua maioria ingressos pelo sistema de reserva de vagas. A pesquisa em profundidade foi realizada com nove estudantes de diversos cursos da UFBA, bem como técnicos e gestores dos programas institucionais de permanência. Os resultados encontrados na pesquisa empírica sustentam a nossa tese de que a permanência (material e simbólica) como política de ação afirmativa na UFBA é um processo em construção e pode ser descrita como alguns poucos projetos institucionais de permanência e uma gama de estratégias informais criadas pelos estudantes a fim de se manter na universidade. A identificação e compreensão destes projetos e destas práticas podem fornecer subsídios para a formulação de políticas que contribuam para uma permanência qualificada por um lado e por outro amplie as possibilidades de inserção destes estudantes nos demais campos sociais a fim de possibilitar oportunidades de mobilidade social. A diversidade étnico-racial e social, hoje mais presente nas universidades públicas brasileiras é um fenômeno que enriquece a todos e o mapeamento da exclusão social, da discriminação e da desigualdade racial no ensino superior, interessa não somente à produção cientifica quanto á formulação de políticas públicas de boa qualidade.
Salvador
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Trentin, Élcio Ferreira 1967. "Análise do custo de materiais utilizados em restaurações dentárias posteriores diretas em resina composta." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/290801.

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Orientador: Eduardo Hebling
Dissertação (mestrado profissional) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: O custo dos materiais faz parte do cálculo do valor dos honorários odontológicos. As resinas compostas são materiais usualmente utilizados em restaurações dentárias diretas de dentes posteriores. O objetivo desse trabalho foi determinar o valor total do custo dos materiais diretos e indiretos utilizados em restaurações de dentes posteriores em resina composta. O cálculo dos custos foi baseado no método de sistema de custeio variável. As repetições foram obtidas de preparos classes I e II em dentes pré-molares e molares artificiais. A lista dos materiais foi obtida por meio de consulta a uma banca de juízes e baseada nos padrões de excelência comprovados na literatura. Os valores dos materiais foram obtidos de uma média dos valores consultados no mercado fornecedor. Os materiais foram quantificados para cada tipo de preparo com uso de balança de precisão. Os dados foram avaliados por estatística descritiva e pelos testes de Mann-Whitney e Kruskal-Wallis. A análise foi feita para os materiais utilizados em biossegurança (Capítulo 1) e para a realização da restauração (Capítulo 2). O custo encontrado para a biossegurança foi de R$ 8,85. Para os demais materiais para restauração de Classe I foi de R$ 8,69 e para a de Classe II de R$ 8,86. Não houve diferença estatística no custo entre os tipos de preparos para restauração, sendo a média total dos materiais de R$ 17,63. Os valores encontrados podem ser utilizados no cálculo do valor final do procedimento restaurador, auxiliando na gestão de serviços odontológicos públicos ou privados
Abstract: The cost of the materials is part of the calculation of the value of dental fees. The composite resins are materials commonly used in direct posterior dental restorations. The aim of this study was to determine the total value of the cost of the direct and indirect materials used in composite resin posterior dental restorations. The calculation of costs was based on the method of variable costing system. The repetitions were obtained from classes I and II cavities in artificial premolars and molars teeth. A list of the materials was obtained by an experts panel and based on the excellence standards established in the literature. The values of the materials were obtained from an average of the values founded in the supplier market. The materials were quantified for each type of cavity with the use of precision balance. The data were assessed by descriptive statistics and by Mann-Whitney and Kruskal-Wallis tests. The analysis was performed for the materials used in biosafety (Chapter 1) and on the restoration (Chapter 2). The founded cost (Brazilian current coin) was R$8.85 for biosafety. The others materials for Class I restorations was R$8.69 and for Class II restorations was R$ 8.86. There was no statistically significant difference in cost between the types of cavities, with an average of total materials of R$ 17.63. These values might be used in the calculation of the final value of the restorative procedure, aiding in the management of public or private dental care services
Mestrado
Mestre em Odontologia em Saúde Coletiva
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Contreras, Martínez Cesar Hernán, and Vilcatoma Diego Paul Mamani. "Reducción de la deformación permanente en pavimentos diseñados con mezclas asfálticas en caliente a través de la incorporación de polvo de caucho proveniente de neumáticos usados." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/651885.

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El presente trabajo de investigación tiene como objetivo promover el uso del polvo de caucho reciclado como componente en el diseño de mezclas asfálticas con el propósito de disminuir la deformación permanente de la carpeta asfáltica y así mejorar su vida útil mediante el ensayo de la Rueda de Hamburgo. La problemática del presente trabajo es la falta de información en cuanto a antecedentes del uso del polvo de caucho sobre todo en el medio local. Además en nuestro país no existe una industria dedicada a la elaboración del polvo de caucho. También se debe considerar que en el Perú no existe la cultura de utilizar materiales reciclados como componentes para el mejoramiento del asfalto en proyectos de pavimentos. La finalidad de esta investigación consiste en dejar un antecedente para seguir con los trabajos de investigación del uso del polvo de caucho y mejorar el diseño de la mezcla asfáltica. Además de promover el uso de materiales reciclados para proyectos de infraestructura vial con el fin de cuidar el medio ambiente y mejorar la calidad de vida de los ciudadanos.
The purpose of this research work is to promote the use of recycled rubber powder as a component in the design of asphalt in order to reduce the permanent deformation of the asphalt binder and thus improve its useful life by using the Hamburg wheel. The problem of the present work is the lack of information regarding the background of the use of rubber powder especially in the local environment. In addition in our country there is no industry dedicated to the production of rubber powder.It should also be considered that in Peru there is no culture of using recycled materials as components for the improvement of asphalt in pavement projects. The purpose of this research is to leave a background to continue with the research work on the use of rubber dust and improve the design of the asphalt mix. In addition to promoting the use of recycled materials for road infrastructure projects in order to care for the environment and improve the quality of life of citizens.
Tesis
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Oliveira, Júnior Carlos da Cunha 1979. "Efeito da ciclagem termo-mecânica na resistência de união e adaptação marginal de sistemas adesivos à dentina." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/289734.

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Orientadores: Luís Roberto Marcondes Martins, Regina Maria Puppin Rontani
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: O objetivo do estudo é avaliar in vitro o efeito da ciclagem termo mecânica na resistência de união push out e adaptação marginal em dentina. Para isso, foram confeccionados 60 blocos de dentina bovina, com dimensões 4mmX4mmX2mm e restaurados com diferentes sistemas adesivos: Single Bonde (SB - 3M), Clearfil SE Bond (CB) e Clearfil SE Protect (CP) (Kuraray). Foram feitas cavidades de 2 mm de diâmetro no centro dos blocos, que foram restaurados com compósito resinoso Z350 cor A3,5, e depois de armazenados em 100% de umidade. Foram polidos com discos Sof-lex da série laranja em sequência decrescente de abrasividade. Em seguida, 30 blocos foram aleatorizados para o grupo controle e os outros 30 foram imersos em fucsina 0,5% por 24h, em seguida, imersos em água por 4h e o excesso de fucsina removido. Foram, então, fotografados para o registro de possíveis fendas formadas. Em seguida, estes blocos foram submetidos à ciclagem mecânica (100.000 ciclos) e térmica (1.000 ciclos). Após o processo de fadiga termomecânica, os blocos foram novamente imersos em fuccina e novas imagens foram registradas. Estas foram analisadas através do software Image J, no qual se registrou o percentual de fendas antes e depois da ciclagem termomecânica pela equação: %fenda = l/lt x 100, onde l é o perímetro da fenda e lt é o perímetro da restauração total. Logo depois, os blocos foram levados ao testes de push out, onde se registrou a resistência de união dos sistemas adesivos estudados que foi comparada com o grupo controle. Os dados foram submetidos ao teste estatístico não paramétrico Kruskal-Wallis e Dunn, por meio do teste de Mann-Whitney para os valores de resitência push out e a análise de percentagem de fendas antes e depois da ciclagem termomecânica se deu pela ANOVA 2 fatores. Os resultados não mostraram diferença estatisticamente significativa entre os grupos no percentual de fendas formadas antes e após a ciclagem termomecânica, mas o grupo ciclado mostrou diferença estatística com o grupo controle, o grupo CP não foi estatisticamente diferente do CB e SB, por outro lado, CB e SB foi estatisticamente diferente. Estes achados sugerem que a ciclagem termomecânica diminuiu significativamente os valores de resistência de união push-out
Abstract: The objective of study to evaluate in vitro the effect of mechanical term cycling on the bond strength push out and marginal adaptation in dentin. For this, were made 60 bovine dentin blocks with dimensions 4mmX4mmX2mm and restored with different adhesive systems: Single Bonde (SB - 3M), Clearfil SE Bond (CB) and Clearfil SE Protect (CP) (Kuraray). 2 mm diameter wells were made in the center of the blocks that have been restored with composite resin Z350 A3,5 color and then stored in 100% humidity. They were polished with Sof-Lex discs orange series in decreasing abrasiveness sequence. Then 30 blocks were randomized to the control group and others 30 were immersed in 0.5% fuchsin for 24 hours, then immersed in water for 4 hours and the fuchsin excess removed. They were photographed to record possible gaps formed. Then these blocks were submitted to mechanical (100,000 cycles) and thermal (1,000 cycles) cycling. After the process of thermomechanical fatigue, the blocks were immersed in fuchsin and new images were recorded. They were analyzed using Image J software, on which registered the percentage of gaps before and after the thermomechanical cycling by the equation: % gap = l / l x 100, where L is the perimeter of the gap and Lt is the total perimeter of the restoration. After, the blocks were taken to push out test where the registered the bond strength of adhesive systems was compared with the control group. Data were subjected to statistical nonparametric Kruskal-Wallis and Dunn, using the Mann-Whitney test for bond strenght to push out, and the analysis values of the percentage of gap before and after the thermomechanical cycling was submited for ANOVA 2way. The results showed no statistically significant difference between groups in the percentage of gap formed before and after thermomechanical cycling, but cycling group showed statistical difference with the control group, the CP group was not statistically different from the CB and SB on the other hand, CB and SB were statistically different. These findings suggest that the thermomechanical cycling decreased the bond strength values push out
Doutorado
Materiais Dentarios
Doutor em Materiais Dentários
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Tomka, George Jiri. "Magnetisation reversal in permanent magnet materials." Thesis, University of Central Lancashire, 1992. http://clok.uclan.ac.uk/20073/.

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This thesis presents an investigation of the reversal of magnetisation in sintered anisotropic Nd-Fe-B, isotropic melt-spun Nd-Fe-B powder, and in Sm-(Co,Cu,Fe,Zr) 2:17 anisotropic powder. Magnetisation measurements have been performed using vibrating sample magnetometers, a permeameter, and an adapted pulsed field magnetometer. Magnetisation reversal is explained in terms of domain wall formation and motion, and irreversible switching of moments across energy barriers. For sintered Nd-Fe-B, consisting of multi-domain grains in the virgin state, it is suggested that the pinning of domain walls at grain boundaries plays an important role in hindering reversal of magnetised grains. The type of pinning mechanism appears to depend on the initial magnetic state of the material. In the melt-spun Nd-Fe-B and in Sm-(Co,Cu,Fe,Zr) 2:17 powders, it is suggested that since domains remain correlated across several grains, the reversal mechanism is best described as bulk pinning of domain walls by grain boundaries. The nature of this mechanism is investigated. In Sm-(Co,Cu,Fe,Zr) 2:17 an unexpected variation of remanent coercivity and fluctuation field with magnetic orientation and texture is observed. Data on magnetic interactions and their effects on the reversal mechanisms is analysed. Weight changes of melt-spun Nd-Fe-B powders during ageing in different environments are related to the observed changes in the reversal mechanism. A preliminary study physically modelling the alignment of anisotropic polymer bonded Sm-(Co,Cu,Fe,Zr) 2:17 powders is outlined and related to a simple analytical model.
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Nakaoka, Marcia Mika. "Efeito da termociclagem e do citrato sobre a deformação permanente e resistencia a tração da união de um reembasador resiliente unido a resina acrilica." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/289922.

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Orientador: Marcelo Ferraz Mesquita
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: O objetivo deste trabalho foi avaliar e comparar o desempenho de um material reembasador resiliente à base de resina acrílica (Eversoft com ou sem adição de citrato à composição), submetido ou não ao envelhecimento (termociclagem), sobre as propriedades de deformação permanente e resistência à tração da união com resina acrílica (QC-20®). Para a realização dos ensaios foram confeccionadas 80 amostras, metade para cada ensaio, separadas por composição e submetidas ou não à termociclagem, totalizando 8 grupos. Para o ensaio de tração, foram utilizadas matrizes retangulares de 10mm2 de secção transversal e um espaçador de 3mm de espessura para padronizar o espaço para a base resiliente, cujo molde impresso no silicone polimerizado por reação de condensação foi preenchido com resina acrílica e material resiliente. A resina acrílica foi incluída com o espaçador e após a polimerização, o espaçador foi removido, as amostras de resina acrílica retiradas do molde e realizado o acabamento. As amostras de resina acrílica retornaram ao molde, e no lugar do espaçador, os materiais resilientes foram prensados e termopolimerizados de acordo com as instruções dos fabricantes. Para o ensaio de deformação permanente, foram utilizadas matrizes cilíndricas de 12,7mm de diâmetro e 19mm de altura, cujo molde impresso no silicone foi preenchido com material resiliente. Metade das amostras de cada ensaio foi levada ao termociclador MSCT-3 PLUS, onde foram realizados 3.000 ciclos de 1 minuto de imersão em água a 5±1ºC e 1 minuto a 55±1ºC. A outra metade foi armazenada em água numa estufa a 370C durante 24 horas. As amostras foram submetidas ao ensaio de tração no equipamento EMIC-DL500MF com velocidade de 5 mm/minuto. As amostras foram avaliadas visualmente quanto ao tipo de ruptura ocorrida, e amostras representativas de cada tipo foram analisadas através de microscopia eletrônica de varredura em microscópio modelo JSM 5600 PV (JEOL, Japão). As amostras do estudo de deformação permanente foram ensaiadas em um aparelho mecânico recomendado na especificação no18 da American Dental Association (A.D.A.). Todos os dados obtidos foram submetidos à análise de variância em esquema fatorial 2x2 e as médias comparadas pelo Teste de Tukey, em nível de significância de 5%. Em relação aos valores médios de resistência à tração da união dos materiais não submetidos à termociclagem, o Eversoft com citrato ¿ Experimental apresentou menor valor (0,39 MPa), porém sem diferença estatística com o Eversoft sem citrato ¿ Eversoft® (0,44 MPa). Houve aumento dos valores médios de resistência à tração da união quando submetido à termociclagem para o Eversoft® (0,46 MPa) e Experimental (0,55 MPa), sendo estatisticamente significativo apenas para o material Experimental Em relação aos tipos de fratura, para ambos materiais não submetidos à termociclagem, predominaram rupturas coesivas (80%); e quando submetidos à termociclagem, foram observadas rupturas adesivas para o material Experimental (80%) e adesivas e mistas (40% e 50%, respectivamente) para o Eversoft®. Em relação à deformação permanente, os valores médios obtidos para os materiais Eversoft® e Experimental não submetidos à termociclagem (1,06% e 1,82%, respectivamente) diferiram estatisticamente quando submetidos à termociclagem (1,36% e 1,98 %, respectivamente). A termociclagem não afetou a resistência à tração da união para o material Eversoft®, enquanto o Experimental apresentou elevação no valor médio de resistência à tração da união, com diferença estatística significativa. A termociclagem elevou os valores médios de deformação permanente para ambos materiais. Independentemente do tratamento, o material resiliente Experimental apresentou o valor médio mais elevado para deformação permanente
Abstract: The aim of this study was to evaluate and compare the effect of citrate added or not to a composition of acrylic-based soft liner (Eversoft) on its permanent deformation and bond strength with acrylic resin (QC-20®). Eighty samples were used to carry out the two assays containing 40 specimens each: 2 materials (Eversoft® and Eversoft + citrate) and 2 treatments (with and without thermocycling) totaling 8 groups of 10 specimens each. For the tensile test, rectangular specimens with a 10x10mm2 cross sectional area were prepared for each acrylic resin and soft liner. Acrylic resin specimens were prepared by investing brass dies with a 3mm thick spacer in a denture flask. The dies and spacers were invested in silicone rubber. All dies and the spacer were machined to the same dimensions to standardize acrylic resin and soft liner shape. Specimens were made by processing soft liner against acrylic resin blocks according to the manufacturers¿ directions. For the permanent deformation, the specimens were prepared by investing brass dies (12.7 x 19.0 mm) in a denture flask and the model impressed was filled up with a soft liner. Half of the specimens of each assay were thermocycled using the MSCT-3 Plus with cycles of 1 minute in water at 5±1ºC and 1 minute in water at 55±1ºC, totaling 3000 cycles. The other half was stored in water at 370C for 24h. For the tensile test, the specimens were submitted to a bond strength testing machine (EMIC DL-500 MF) at the crosshead speed of 5mm/minute. Samples were visually evaluated as to the types of rupture observed in this study. The Scanning Electron Microscope JSM 5600 PV (JEOL, Japan) was used to analyze the representative samples. Permanent deformation was measured with an instrument described in the American Dental Association (A.D.A.) - specification number18. The data were submitted to a 2-way analysis of variance and the Tukey test (5%). The bond strength test, without thermocycling, revealed a lower mean value (0.39 MPa) for the group Eversoft with citrate - Experimental; however, no statistically significant difference was observed for the group Eversoft without citrate - Eversoft® (0.44 MPa). Thermocycling did not affect the bond strength regarding Eversoft® (0.46 MPa); however, Experimental presented a higher mean value (0,55 MPa) ¿ statistically significant. Both materials, without thermocycling, presented cohesive failures (80%). When submitted to thermocycling, 80% of adhesive failures were observed for Experimental, and 40% of adhesive and 50% of a combined mode of failures for Eversoft®. In relation to the permanent deformation, Eversoft® and Experimental, not submitted to thermocycling, presented mean values (1.06% and 1.82%, respectively) differing statistically from those submitted to thermocycling (1.36% and 1.98%, respectively). Thermocycling did not affect the bond strength regarding Eversoft®; however, Experimental presented a higher mean value. Thermocycling had a deleterious effect on the permanent deformation of both materials. Regardless of treatment, statistically significant difference was observed for Experimental group, showing the highest permanent deformation permanent value
Mestrado
Protese Dental
Mestre em Clínica Odontológica
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Emura, Marilia. "Propriedades Magnéticas de Ímãs Aglomerados e Nanocristalinos." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/43/43133/tde-09102012-145903/.

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Imãs são corpos de materiais magnetizáveis utilizados para gerar um forte campo magnético em sua vizinhança. Essa característica faz com que sejam empregados em diversas aplicações na vida moderna, tais como motores para a indústria eletroeletrônica e automobilística, como elementos de fixação e em acoplamentos magnéticos na indústria mecânica. O mercado de ímãs permanentes movimenta atualmente cerca de US$ 5 bilhões por ano e está em plena expansão, sendo estimado um crescimento de 12% por ano até o final desta década de 90. Tal crescimento é atribuído aos \"novos materiais\" desenvolvidos a partir da década de 80 (ímãs de terras-raras) e aos novos mercados, que foram gerados pelos próprios \"novos materiais\" (Hart, 1996). Tratando-se de materiais tão ligados às facilidades da vida moderna, a pesquisa na área de imãs está intimamente ligada ao seu desenvolvimento tecnológico. Procura-se desenvolver imãs com as melhores propriedades magnéticas para as suas aplicações, investigando ao mesmo tempo os fenômenos que regem os mecanismos físicos de magnetização.
Permanent magnets composed of magnetic powders bonded with a polymer represent the fastest growing sector of the magnetic materials market since they are ideal for the fabrication of small motors. This work presents a magnetic and structural characterization of TIve eommereial bonded magnets, Reversible and irreversible components of the total magnetization as well as magnetic interactions in the five commereial magnets are also studied, the magnets are composed by ferrite and MQP-Q nanoerystelline powders and mixtures of these two powders with 80%, 60% and 40% ferrite. Magnelie interactions were analyzed by Henkel plots, gM plots and switching field distributions. In bonded magnets, since the magnetic particles are separated from each other by a binder, it is expected that interactions are mainly dipolar in Nature. There is a progressive change in the data as the fraction of MQP-Q powder is increased. The sample with 100% ferrite shows strong magnetizing interactions at low fields. Date for hybrid magnets present increasing demagnetizing interactions as the fermion of MQP-Q increases and for the 100% MQP-Q sample, the data indicate demagnetizing effects. Reversible and irreversible magnetization components were obtained by applying two methods commanly used in magnetic materials characterization, the DCD -IRM method and the reversible susceptibility method. For the 100% ferrite magnet, in which the reversible component is small, the methods lead lo similar results. The results for both methods diverge as the reversible component! Increases, which in this case occurs with the increase of the MQP-Q powder fraction. The divergence is attributed to the idealized conditions of non-inleracting particles assumed by the DCD-IRM method. Magnetic interactions and lotai magnetization components were also studied in a melt-spun nanocrystalline Nd9Fe85B5 sample. This composition is similar to that of the MQP-Q powder and the magnetic behavior of both the bonded magnetic and the nanocrystalline precursor could be compared. Micromagnetic simulations allowed the evaluation of exchange, anisotropy and magnetostatic interactions on the magnetization reversal of nanocryslalline romposlle systems. The Monte Carlo method was applied lo a linear array of 300 magnetic moments distributed in three grains, two magnetically hard with a soft grain between them.
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Pope, Chris. "Hyroxylic polymers as materials for permanent holograms." Thesis, Cranfield University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357054.

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Khanzada, Shahab. "Permanent deformation in bituminous mixtures." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323253.

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Books on the topic "Material permanence"

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Gheorghiu, Mihai, and Maria Mateoniu. Muzeul Țăranului Român: Ghidul expoziției permanente = Museum of the Romanian Peasant : guide to the permanent exhibition. Bucuresți: Litera, 2012.

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Buschow, K. H. J. Permanent-magnet materials and their applications. Uetikon-Zuerich, Switzerland: Trans Tech Publications, 1998.

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Peter, Campbell. Permanent magnet materials and their application. Cambridge [England]: Cambridge University Press, 1994.

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Catálogo da exposição permanente. Luanda: República de Angola, Ministério da Cultura, Museu Nacional de Antropologia, 2007.

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Willi, Geller, ed. Esthetic & restorative dentistry: Material selection & technique. 2nd ed. Chicago: Quintessence Pub. Co, 2013.

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Gamundi, María. Permanencia del oficio y la material: Esculturas de María Gamundi. Caracas: Centro Cultural Consolidado, 1993.

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Permanent magnet and electromechanical devices: Materials, analysis, and applications. San Diego, Calif: Academic, 2001.

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Carlyle, Leslie, and James Bourdeau. Varnishes: Authenticity and permanence : colloquium, 19-20 September 1994. Ottawa, Ont: Canada Heritage, Canadian Canadian [sic] Institute, 1994.

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Abele, Manlio G. Structures of permanent magnets: Generation of uniform fields. New York: John Wiley, 1993.

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(1994), Varnish Workshop. Varnishes: Authenticity and permanence : workshop handbook : Varnish Workshop, September 20-21, 1994. Ottawa, Ont: Canadian Heritage, Canadian Conservation Institute, 1994.

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Book chapters on the topic "Material permanence"

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Müller, Karl-Hartmut, Simon Sawatzki, Roland Gauß, and Oliver Gutfleisch. "Permanent Magnet Materials." In Handbook of Magnetism and Magnetic Materials, 1–65. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63101-7_29-1.

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Buschow, K. H. J. "Novel Permanent Magnet Materials." In Supermagnets, Hard Magnetic Materials, 49–67. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3324-1_4.

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Buschow, K. H. J., and F. R. de Boer. "Permanent Magnets." In Physics of Magnetism and Magnetic Materials, 105–29. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/0-306-48408-0_12.

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Howe, D., and T. S. Birch. "Permanent Magnet Machines." In Supermagnets, Hard Magnetic Materials, 679–702. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3324-1_26.

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Tolea, F., M. Sofronie, A. Birsan, G. Schinteie, V. Kuncser, and M. Valeanu. "Magnetic Nanocomposites for Permanent Magnets." In Engineering Materials, 287–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12070-1_12.

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Khalifeh, Mahmoud, and Arild Saasen. "Specification for Permanent Plugging Materials." In Introduction to Permanent Plug and Abandonment of Wells, 71–95. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39970-2_3.

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Khalifeh, Mahmoud, and Arild Saasen. "Types of Permanent Plugging Materials." In Introduction to Permanent Plug and Abandonment of Wells, 97–136. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39970-2_4.

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Goldman, Alex. "Materials for Permanent Magnet Applications." In Handbook of Modern Ferromagnetic Materials, 75–106. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4917-8_5.

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Turowski, Janusz, and Stawomir Wiak. "Magnetic Materials and Permanent Magnets." In Modern Electrical Drives, 19–50. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9387-8_3.

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Henig, E.-Th, and B. Grieb. "Phase Diagrams for Permanent Magnet Materials." In Supermagnets, Hard Magnetic Materials, 171–226. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3324-1_9.

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Conference papers on the topic "Material permanence"

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Srivastava, Jayesh, and L. H. Shu. "The Affordance of Absence." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-35285.

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We originally studied affordances to design products that encourage resource-efficient behavior in users. This paper was motivated by the observation that a lack of resources affected the ability of impoverished slum residents to perceive affordances. Data gathered from a trip to Bangladesh support recent postulations that affordance perception depends on user intention and socio-cultural norms, which are also influenced by fixation and training. We thus became interested in how absence, whether of material, components, or entire products, affected the utility of objects. We describe three dimensions of absence, one major and two minor. The major dimension is used to express the range of physical absence, i.e., of material in a part, of a part in a product, and of the entire product. Minor dimensions include the extent of user control and the permanence of absence, each of which can be used to increase utility in objects. We provide existing examples along these dimensions and describe concepts along the major, physical dimension of absence. We propose that the affordance of absence can be used as an approach to identify novel affordances, and conclude by placing it in the context of existing affordance-based design methods.
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Squassina, Angela. "Da fortezza a residenza castellana: osservazioni stratigrafiche per la comprensione del processo trasformativo della Rocca di Novellara (RE, Italia)." In FORTMED2020 - Defensive Architecture of the Mediterranean. Valencia: Universitat Politàcnica de València, 2020. http://dx.doi.org/10.4995/fortmed2020.2020.11384.

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From a fortress to a residential castle: a stratigraphic reading of the transformations in the Rocca of Novellara (RE, Italy)The paper reports the results of a stratigraphic reading on the northern façade of the Rocca di Novellara (Reggio Emilia, Italy), a castle which is now the town hall, right in the city centre. Though as a pole of the contemporary public life in Novellara, housing at present both a museum and a nineteenth century theatre, the Rocca recalls its military past through its name and by means of the still standing remains of the walls and corner towers. Besides a well-documented historical development, the stratigraphic investigation of the northern façade –the only part that still hasn’t been restored– allowed a direct observation of the material traces revealing the slow transformation of the Rocca from a fortification to a residential castle. This study gave the chance of understanding the different constructive phases of the castle, making a chronological sequence out of them but it was also meant to reflect about the changes of its character, as the building has been acquiring a complex identity through time, due both to high qualified architectural episodes and to as much meaningful though tiny changes. Thus, the permanence of the stratified marks can be regarded as one of the main goals of a preservation project.
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Warren, P. Daniel, Rafael R. Bernal, John L. Harper, Rachelann N. Herlihy, and Jonathan P. Vande Geest. "Thermomechanical and Hydrophobic Characterization of Shape Memory Polymers." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206678.

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Shape memory polymers (SMPs) have generated a great amount of interest due to their capacity to recover a programmable shape under an applied stimulus, such as temperature change or light irradation [1, 2]. The SMP is initially synthesized with a specific original shape. This shape can be deformed under a mechanical load and at a temperature (TH) greater than the glass transition temperature, Tg. The application of this deformation coupled with subsequent lowering of the temperature (TC) to below the Tg, can fix the polymer in the newly altered formation even after removal of the external load. Increasing the temperature again, to a point above Tg, then activates the shape memory effect, whereby the original shape can be recovered. This shape memory ability is a direct result of specific molecular architecture. Chemical and physical crosslinks and macromolecular chain entanglements are part of this structure. Chemical crosslinks between segments give form to the original shape. Some of these segments are stimuli-sensitive, in other words, segments can become increasingly elastic with the application of thermal energy. This application of energy causes the crystalline structure of these segments to melt and be easily deformed under external load. This temporary shape can now be maintained with the removal of thermal energy leading to re-crystallization. Recoil in this state is prevented by both the new crystalline structure and entanglements of the segments caused by deformation. Physical crosslinks give the architecture permanence, since the linkages do not degrade with stimulus [3]. Different crosslinker formulations can result in varying types of chemical crosslinks. Variations in the structure lead to alterations in the material properties, such as mechanical characteristics and hydrophobicity.
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Sato, Hayaho, Shingo Hiruma, and Hajime Igarashi. "Multi-material Topology Optimization of Permanent Magnet Motor with Arbitrary Adjacency Relationship of Materials." In 2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC). IEEE, 2020. http://dx.doi.org/10.1109/cefc46938.2020.9451380.

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"Permanent magnet materials and basic design concepts." In IEE Seminar on Permanent Magnet Materials-Fundamentals, Design and Application. IEE, 2000. http://dx.doi.org/10.1049/ic:20000454.

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Adelstein, Peter Z. "Standards on the permanence of recording materials." In Critical Review Collection. SPIE, 1996. http://dx.doi.org/10.1117/12.229260.

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Krause, R. P., J. H. Bularzik, and H. R. Kokal. "A pressed soft magnetic material for motor applications." In IEE Colloquium on New Magnetic Materials - Bonded Iron, Lamination Steels, Sintered Iron and Permanent Magnets. IEE, 1998. http://dx.doi.org/10.1049/ic:19980330.

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Bohlmann, Melvin A. "Available and new permanent magnet materials." In 1985 EIC 17th Electrical/Electronics Insulation Conference. IEEE, 1985. http://dx.doi.org/10.1109/eic.1985.7458595.

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Moses, A. J. "Iron based amorphous magnetic materials - present and future." In IEE Colloquium on New Magnetic Materials - Bonded Iron, Lamination Steels, Sintered Iron and Permanent Magnets. IEE, 1998. http://dx.doi.org/10.1049/ic:19980337.

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Zubkov, Yu V., and D. A. Vladimirov. "Selection of Permanent Magnet Material for Starter Excitation." In 2020 International Multi-Conference on Industrial Engineering and Modern Technologies (FarEastCon). IEEE, 2020. http://dx.doi.org/10.1109/fareastcon50210.2020.9271076.

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Reports on the topic "Material permanence"

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John F Wallace, David Schwam, and Wen Hong dxs11@po.cwru.edu. Mold Materials For Permanent Molding of Aluminum Alloys. Office of Scientific and Technical Information (OSTI), September 2001. http://dx.doi.org/10.2172/791424.

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Hadjipanayis, G. C. Fundamental studies of new high-energy permanent magnet materials. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/6515681.

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Skalicky, Peter, Josef Fidler, Roland Groessinger, and Hans Kirchmayr. Anisotropy and Microstructure of Rare Earth Permanent Magnet Materials. Fort Belvoir, VA: Defense Technical Information Center, January 1986. http://dx.doi.org/10.21236/ada170788.

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Liu, S., and G. E. Kuhl. Development of New High Temperature and High Performance Permanent Magnet Materials. Fort Belvoir, VA: Defense Technical Information Center, September 2000. http://dx.doi.org/10.21236/ada382940.

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Lewis, L. H., C. H. Sellers, and V. Panchanathan. Factors affecting coercivity in rare-earth based advanced permanent magnet materials. Office of Scientific and Technical Information (OSTI), February 1997. http://dx.doi.org/10.2172/432961.

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Spencer, Cherrill M. Adjustable Permanent Quadrupoles Using Rotating Magnet Material Rods for the Next Linear Collider. Office of Scientific and Technical Information (OSTI), August 2002. http://dx.doi.org/10.2172/799917.

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SUGAMA, T. RECYCLED WASTE-BASED CEMENT COMPOSITE PATCH MATERIALS FOR RAPID/PERMANENT ROAD RESTORATION. Office of Scientific and Technical Information (OSTI), July 2001. http://dx.doi.org/10.2172/15011144.

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Barlow, D. B., R. H. Kraus, and M. J. Borden. Radiation hardness measurements of new permanent magnet materials for high-intensity linac applications. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/562479.

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Hadjipanayis, G. C. Fundamental studies of new high-energy permanent magnet materials. Progress report, June 19, 1992--June 18, 1993. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/10155206.

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Laguado Jaimes, Elveny. Estrategias de aprendizaje para historia y epistemología del cuidado de enfermería. Ediciones Universidad Cooperativa de Colombia, August 2021. http://dx.doi.org/10.16925/gcnc.16.

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Abstract:
Gracias a la nota de clase, los alumnos y profesores de Enfermería disponen de un material que les permitirá desarrollar estrategias para apropiarse de los aspectos relacionados con el origen de la enfermería y su influencia en el avance del cuidado como esencia del quehacer profesional. Los hechos históricos desde una mirada crítica y reflexiva permiten valorar y reconocer en las diferentes épocas de la historia situaciones del contexto social, político y económico que contribuyeron a los cambios para el presente de la profesión y los desafíos del futuro; esto debido a que la historia, como parte inherente de una sociedad, se escribe de manera permanente por los modos cambiantes de la humanidad. Hay un presente con legados históricos que fortalecen una profesión que está evolucionando constantemente en cuanto a construcción como ciencia, con los referentes teóricos que los alumnos identifican por primera vez. Asimismo, la forma como se comprende, valora e interpreta contribuirá a que se empoderen y lideren cambios en su práctica profesional y se fortalezca la calidad del cuidado y la identidad profesional.
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