Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 78 for “"Amina"”.
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Efeito da substituição parcial ou total da canforoquinona por fotoiniciadores alternativos sobre a profundidade de polimerização, dureza e propriedades ópticas de compósitos experimentais
… total ou parcial do sistema canforoquinona/amina. Foram preparados seis grupos de compósitos experimentais, tendo como único componente variável o sistema fotoiniciador. Elaborou-se uma mistura contendo BisGMA e TEGDMA (60/40%) e partículas de carga silanizadas de dióxido de carbono (70%). A …
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Materiales sensores fluorogénicos derivados de perilenodiimidas: aplicaciones medioambientales y en bioimagen
… en: - Familia A: la introducción de una amina cíclica en las posiciones peri y sustitución de bromos en las posiciones bahía mediante acoplamiento C-C con diferentes ésteres borónicos. -Familia B: la introducción de una amina anclable en las posiciones peri y sustitución nucleófila de …
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Incorporación de cationes metálicos y n-octilamina en nanopartículas de Fosfato de Titanio y su posterior liberación en medio ácido
… estudió la interacción de las NPFT con la octilamina, tomada como modelo de las proteínas. Así, se descubrió que la interacción directa entre ambos es suficiente para incorporar la amina a las nanopartículas pues los fosfatos ácidos protonan la octilamina y esta queda retenida formando pares …
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Síntesis, reactividad, estructura y propiedades de compuestos de metales del grupo del platino con enlaces M-N amido, amino e imino. ataques nucleofílicos sobre iminas coordinadas a paladio
… la formación de especies amiduro y especies amina coordinadas al metal. No obstante, la formación de paladio metálico (por reducción con borohidruro de sodio) es importante en muchos de los casos.. En la segunda parte de este trabajo se examina la reactividad de iminas coordinadas a paladio …
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Síntesis de sistemas heterocíclicos nitrogenados en secuencias Ugi/ciclación a partir de glioxales y ácidos haloacéticos
… al utilizar el ácido cloroacético combinado con aminas con H-α ácidos como reactivos de partida se han obtenido 2-azetidinonas, oxazin-3-onas y 2-pirrolidinonas de forma selectiva modificando únicamente la base utilizada en la etapa de post-condensación. Es interesante destacar el hecho de que en …
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Estudo de alternativas para a flotação de cromita
… as espécies dissolvidas na polpa na flotação com amina. Com 0,4% de amido a recuperação da ganga e a da cromita, caem mais de 50%. O silicato de sódio não foi seletivo e a CMC deprimiu apenas a ganga. Na flotação com hidroxamato e CMC, 10 g/t do depressor foi o suficiente para atingir quase 25% de …
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Shiahrazad's Daughters
… Ross, Sr. Patricia Dougherty, and my mother, Amina Al-Jamal.</p>
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Desenvolvimento de metodologia multicomponente, catalisada por cloreto de zirconila octaidratado, utilizando micro-ondas doméstico para síntese de acridino-1,8-dionas
… (dimedona) e diferentes aldeídos e aminas aromáticas. Buscando otimizar as condições de reação para maximizar os rendimentos dos produtos, foram avaliados os seguintes parâmetros de reação: temperatura, solvente, proporção dos reagentes, modo de conduzir a reação, além da natureza e …
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Novo método para a síntese de sulfonamidas mediado pela célula eletroquímica de cavidade
… as sulfonamidas são preparadas a partir de aminas e cloretos de sulfonila. Nesse trabalho foi desenvolvido um método de síntese verde baseado na eletroquímica, tendo como meio reacional um macroeletrodo de grafite em pó (anodo), utilizando sulfinatos de sódio (compostos de maior …
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Battered women in Muslim communities in the Western Cape : religious constructions of gender, marriage, sexuality and violence
… Muslim women have been marginalised in the examination of Islamic texts and Muslim society. This has resulted in the non-recognition and silencing of women's perspectives as well as the concealment of some of the traumatic realities experienced by groups of Muslim women. Exacerbated by …
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Caracterización y evaluación toxicológica de derivados de grafeno como potenciales materiales en contacto con alimentos
… y sus derivados funcionalizados con dodecil amina (DA) y cloruro de [2-(metacriloiloxi) etil] trimetilamonio (MTAC), para su uso en la industria alimentaria en el área de envasado alimentario. Para garantizar la seguridad de estos materiales en contacto con alimentos, se llevaron a cabo …
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Importance of bacterial hydrogen sulfide in the pathogenesis of periodontal diseases
Hydrogen sulfide (H2S) is one of many end-products of the proteolytic activities in the subgingival microbiota in patients with periodontal diseases, such as gingivitis and periodontitis. Although H2S is generally regarded as toxic, the mechanisms that underlie its production and its effects on …
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Employee empowerment practice for sustainable manufacturing performance: mediating role of quality of work life
Stakeholders are consistently pressurizing manufacturers to integrate the social and environmental factors within their production process to protect the society and environment from the negative effects of the manufacturing process As a result, manufacturing processes experience continuous …
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An Investigation Into The Relationship Between Wages, Mismatch, On-the-Job Search and Education
This thesis contributes to the existing literature by studying the link between educational choices, skill mismatch and wages in a labour market with search frictions with on-the-job search. In the first paper, I used empirical techniques to look at the link between skill mismatch and wages. I …
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Teachers' and Roma students' experiences of the ESOL classroom in Yorkshire.
This research is concerned with exploring teachers' and Roma students' experiences of the ESOL classroom within a further education institute in Yorkshire. Since teaching ESOL to teenagers, I began to realise that what influenced students' language development and learning the most was the practice …
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Dynamic non-linear system modelling using wavelet-based soft computing techniques
The enormous number of complex systems results in the necessity of high-level and cost-efficient modelling structures for the operators and system designers. Model-based approaches offer a very challenging way to integrate a priori knowledge into the procedure. Soft computing based models in …
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Improving FQHCs and Home Infusion Therapy through Care3, A Digital Health Tool
<p>Previous works have identified many challenges in providing home and community-based services. Challenges include all the following: increased patient volume, risks, communication gaps, care complexities, and education barriers. These problems can contribute to poor health outcomes. This project …
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Medication safety in collaborative health care settings: an investigation of the impact of information exchange processes in residential aged care facilities
… emphasis on counting medication errors to an examination of underlying processes in order to identify factors which contribute to safe and effective medication management in these environments.
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Putting culture to work in counseling practice: Intersections of mental health and representations of Arab and Muslim women in Egypt
Recent sociopolitical events in Egypt have alarmed the global mental health community and led to warnings about the lasting psychological effects of political turmoil for Egyptian women, who are often characterized by Western-trained psychologists as likely to suffer from mental illness due to …
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