Vídeo experimento vibrometr��a de diapas��n

Vídeo del experimento realizado para medir la frecuencia de vibraci��n de un diapas��n.

T��cnicas de microscopia aplicadas a las Geociencias

Uno de los problemas con los que se enfrentan los alumnos a la hora de estudiar las geociencias es la falta de im��genes de alta calidad, especialmente en muestras microsc��picas. En este trabajo se examinan distintas t��cnicas de microscop��a ��ptica para la obtenci��n de fotograf��as digitales de alta resoluci��n. Las t��cnicas se han aplicado y desarrollado en el marco de las geociencias, en particular en ��mbito de la sedimentolog��a y micropaleontolog��a siendo los objetos geol��gicos fotografiados fundamentalmente arenas y microf��siles. Las t��cnicas abarcan las distintas opciones de microscopia ��ptica (utilizaci��n de microscop��a simple y compuesta) que incluyen b��sicamente distintos tipos de luz reflejada, utilizaci��n de diferentes tipos de c��mara fotogr��fica, elecci��n de los aumentos y de los grados de luminosidad ��ptimos para cada tipo muestra. Los resultados obtenidos han permitido establecer las mejores condiciones e instrumental para la implementaci��n de esta t��cnica como recurso de investigaci��n aplicado a la did��ctica de las geociencias marinas, en particular en las asignaturas de ���planctolog��a aplicada y micropaleontolog��a marina��� y ���sedimentolog��a��� del grado de ciencias del mar de la universidad de Alicante.

(Bio)funcionaliza����o de superf��cies nanoestruturadas para eletrocat��lise e desenvolvimento de biossensores eletroqu��micos e ��ticos

Tese de doutoramento, Qu��mica (Qu��mica F��sica), Universidade de Lisboa, Faculdade de Ci��ncias, 2016

Os Desafios das Bibliotecas Digitais: Vídeo 2

Trabalhos apresentados na confer��ncia Os Desafios das Bibliotecas Digitais realizado na Funda����o Getulio Vargas em agosto 2014

Os Desafios das Bibliotecas Digitais: Vídeo 1

Trabalho apresentado na confer��ncia Os Desafios das Bibliotecas Digitais realizado na Funda����o Getulio Vargas em agosto 2014

Os Desafios das Bibliotecas Digitais: Vídeo 3

Trabalhos apresentados na confer��ncia Os Desafios das Bibliotecas Digitais realizado na Funda����o Getulio Vargas em agosto 2014

Os Desafios das Bibliotecas Digitais: Vídeo 4

Trabalhos apresentados na confer��ncia Os Desafios das Bibliotecas Digitais realizado na Funda����o Getulio Vargas em agosto 2014

Richtige Anweisung, Reflectirende Telescopia, die es grossen Tubis weit zuvor thun, nach Gregorianischer und Newtonischer Art von mancherley Gr��sse und Einrichtung, samt zugeh��rigen Spiegeln und Gl��sern desgleichen Perspective, Tubos und Microscopia zu verfertigen : Denen Schiffleuten, Geographis, Astronomis, Physicis, K��nstlern und anderen, die dergleichen zur Luft und eigenem Gebrauche zubereiten wollen, sehr n��tzlich /

Mode of access: Internet.

Manual de bacteriologia e microscopia clinica ... com applicac��o��es a�� clinica medica e veterinaria.

Mode of access: Internet.

O BANCO MUNDIAL E A EDUCA����O NO BRASIL: ESTUDO REALIZADO A PARTIR DAS TESES DEFENDIDAS NA UNIVERSIDADE ESTADUAL DE CAMPINAS (UNICAMP), NO PER��ODO DE 1995 A 2007

Este estudo visa analisar as interferencias do Banco Mundial na Educacao Brasileira a partir do estudo de seis teses (aqui identificadas pelas iniciais A,B,C, D, E e F) de doutorado relativas ao tema, defendidas na Universidade Estadual de Campinas (Unicamp), sendo quatro delas (A, B, C, e D) voltadas a area de educacao e duas (E e F) a area de Ciencias Sociais e Economia. O estudo das teses parte dos objetivos de cada uma, que podem ser resumidos da seguinte forma: a Tese A - ����A Mundializacao da Educacao: o Projeto Neoliberal de Sociedade e de Educacao no Brasil e na Venezuela. (MELO, 2003) -, sob a orientacao do Prof. Dr. Nilson Joseph Demange, teve como objetivo investigar o processo de mundializacao da educacao como elemento de uma nova fase de internacionalizacao e acumulacao capitalista, conduzida hegemonicamente pelos sujeitos politicos coletivos que assumem o projeto neoliberal de sociabilidade, especialmente o Fundo Monetario Internacional e o Banco Mundial, que buscam ser condutores das reformas estruturais para a America Latina e Caribe; a Tese B . ����O Capital Financeiro e a Educacao no Brasil. (DEITOS, 2005) -, sob a orientacao da Profa. Dra. Maria Elizabete Sampaio Prado Xavier, teve como objetivo definir quais as consequencias da consolidacao do projeto, para a redefinicao das politicas educacionais na America Latina e Caribe; a Tese C . ����Globalizacao e Descentralizacao: o Processo de Desconstrucao do Sistema Educacional Brasileiro pela Via da Municipalizacao. (ROSAR, 1995) -, sob a orientacao do Prof. Dr. Demerval Saviani, teve como objetivo analisar as reformas educacionais empreendidas no Brasil, no periodo de 1995-2002, particularmente a politica educacional nacional para o ensino medio e profissional, com financiamento externo do Banco Internacional para Reforma e Desenvolvimento (BIRD); a Tese D . ����As Politicas Educacionais para o Desenvolvimento e o Trabalho Docente. (SOUZA, 1999) ., sob a orientacao da Profa. Dra. Liliana Rolisen Petrilli Segnini, trata da politica educacional para o ensino de 1���� grau, tracada segundo a visao de seu autor no ambito de projetos federais, com o objetivo de induzir a municipalizacao do ensino, transferindo encargos para o municipio, sem a realizacao de investimentos financeiros satisfatorios nessa instancia; a Tese E . ����Economia, poder e influencias externa: O Grupo Banco Mundial e as Politicas de Ajustes Estruturais na America Latina, nas Decadas de Oitenta e Noventa. (COELHO, 2002) ., sob a orientacao do Prof. Dr. Sebastiao Carlos Velasco e Cruz, teve como objetivo analisar as relacoes entre o projeto educacional implementado pelo governo estadual, no periodo entre 1995 e 1998 e suas concepcoes de politicas educacionais; a Tese F - ����A Questao Social e os Limites do Projeto Liberal no Brasil. (GIMENES, 2007) ., sob a orientacao do Prof. Dr. Carlos Alonso Barbosa de Oliveira, teve como objetivo analisar a relacao entre a economia, o poder politico e a influencia externa, focalizando o Grupo Banco Mundial e os programas de ajustamento estrutural na America Latina. Por fim este estudo mescla teses brasileiras advindas da area da Educacao e da Economia; foca o banco mundial e sua influencia no Brasil, oferecendo uma visao das conexoes logicas existentes entre elas. Como conclusao deste trabalho, apresentaremos as consideracoes finais de cada uma das teses, bem como as limitacoes e sugestoes para

Efeitos da sinaliza����o por Sonic Hedgehog sobre a prolifera����o de c��lulas-tronco neurais e gliog��nese no c��rtex cerebral em desenvolvimento

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior - CAPES

Cen��rio da produ����o acad��mica em hist��ria da matem��tica no ensino de matem��tica: uma an��lise reflexiva das teses e disserta����es (1990-2010)

This research aims to make a reflective analysis about the academic production originated in the stricto sensu post graduation programs in the country, produced in the period of 1990 to 2010, in the field of History of Mathematics, especifically on works about the History of Mathematics in Mathematics education and that present pedagogical proposals that make use of the History of Mathematics in order to teach Mathematics. Defending the thesis that the researches on mathematics education with goals turned to the use of didactic proposals related to the history of mathematic that take in consideration the coherency between epistemological aspects inherent to mathematics history and anthological elements materialized on the conceptions of mathematics and mathematics history and of apprenticeship (implicitly or explicitly exposed) may originate significant contribution to the field of history of mathematics on education. Among these, nine were Master���s Degree dissertations and five PHD���s theses. The reflective analysis was accomplished from two matrixes; one from theoretical nature and the other, ontologic nature, elaborated from the pretexts of Sanches Gamboa, about the epistemological analysis from academic production in the field of Mathematics Education and the following theoretical perspectives in the field of History of Mathematics Education, that are: linear evolutionary theory, structural construtivist operative, evolutionary discontinuous, historical and socialcultural investigation and the use of activities estimulating the usage of verbal and nonverbal expressions. These perspectives were based on the works of Miguel and Miorim, Mendes and Radford. As results, we have detected some established dissonances between the categories related to theoretical and ontologic levels and the pedagogical proposal presented in these researches. On the other hand, we have discovered works that are able to establish consonances between the theoretical and ontological elements and the presented pedagogical proposal. These works carry significative contributions to the field of History of Mathematics applied to Mathematics pedagogical practice, inclusively presenting significative theoretical elements to the production of knowledge recognized as scientific in the Mathematics field

Resumo de disserta����es e teses: a estrutura composicional �� luz da An��lise Textual dos Discursos

This doctoral dissertationproposes the description, interpretation and analysis of the compositional structure of thesis and dissertation abstracts, with regard to the linguistic mechanisms that evidence text zones of different typological sequences, such as those of the text plan. Along these lines, the research problem was developed from the notion of compositional structure (sequences and text plans), as one of the levels or plans of text analysis, according to the theoretical framework proposed by Jean-Michel Adam (2011a). The main objective of this study was to recognize how the compositional structure, of thesis and dissertation abstracts, is achieved, with respect to text units and the global organization of this text category. The hypothesis posed in this research posits that specific informational text composition categories of abstracts are necessary to process the representation of the original text and the way in which it makes its meaning. Subsequently, this study is based on the theoretical and methodological framework of Text Linguistics (TL) and, above all, Textual Discourse Analysis (TDA), as we endeavor to understand the organizational structure of abstracts from both a linguistic and textual perspective. This structure involves the text plan of abstracts, with respect to their communicative purpose, i.e, the sharing of scientific information in its standard textual form. Thus, the development of this study, from a theoretical and methodological perspective, is based on the theoretical and descriptive premises from TDA (ADAM, 2011a, 2012; PASSEGGI et al., 2010), and also from TL (BEAUGRANDE; DRESSLER, (2012 [1981]); COSERIU; LAMAS (2010); MARCUSCHI, 2009 [1983]; F��VERO; KOCH, 1994;KOCH, 2006; BENTES, 2004; BENTES; LEITE, 2010), within the field of text studies. The methodology of this study relies on empirical, documental research, which is qualitative, and adopts a descriptive and interpretive approach. From the empirical perspective, our objective is to understand the problems pertaining to the textual composition of abstracts, aiming to elucidate them in light of the theoretical and methodological framework previously mentioned. The corpus of the analysis is comprised of seven abstracts designated for systematic data collection. These texts, written between 2004 and 2011,were selected from Master���s theses and Doctoral dissertations in their electronic version, from the graduate program at the Federal University of Rio Grande do Norte. A thorough review of the literature reveals a clear fluctuation in the terminology of the concept, ���abstract���. The results of the analysis revealed that the abstracts, which comprise the corpus of analysis in this study, in general, present typological heterogeneity, while the text plan remains fixed. Finally, the new knowledge gained in this research contributes both to the understanding of the compositional structure of abstracts as well as their production.

Modelagem dos efeitos da irradia����o luminosa no c��rebro de camundongos e rastreamento de neur��nios durante experimentos de microscopia de fluoresc��ncia

The fluorescent proteins are an essential tool in many fields of biology, since they allow us to watch the development of structures and dynamic processes of cells in living tissue, with the aid of fluorescence microscopy. Optogenectics is another technique that is currently widely used in Neuroscience. In general, this technique allows to activate/deactivate neurons with the radiation of certain wavelengths on the cells that have ion channels sensitive to light, at the same time that can be used with fluorescent proteins. This dissertation has two main objectives. Initially, we study the interaction of light radiation and mice brain tissue to be applied in optogenetic experiments. In this step, we model absorption and scattering effects using mice brain tissue characteristics and Kubelka-Munk theory, for specific wavelengths, as a function of light penetration depth (distance) within the tissue. Furthermore, we model temperature variations using the finite element method to solve Pennes��� bioheat equation, with the aid of COMSOL Multiphysics Modeling Software 4.4, where we simulate protocols of light stimulation tipically used in optogenetics. Subsequently, we develop some computational algorithms to reduce the exposure of neuron cells to the light radiation necessary for the visualization of their emitted fluorescence. At this stage, we describe the image processing techniques developed to be used in fluorescence microscopy to reduce the exposure of the brain samples to continuous light, which is responsible for fluorochrome excitation. The developed techniques are able to track, in real time, a region of interest (ROI) and replace the fluorescence emitted by the cells by a virtual mask, as a result of the overlay of the tracked ROI and the fluorescence information previously stored, preserving cell location, independently of the time exposure to fluorescent light. In summary, this dissertation intends to investigate and describe the effects of light radiation in brain tissue, within the context of Optogenetics, in addition to providing a computational tool to be used in fluorescence microscopy experiments to reduce image bleaching and photodamage due to the intense exposure of fluorescent cells to light radiation.

A produ����o audiovisual do #foramicarla: caracter��sticas da apropria����o do vídeo nos movimentos sociais em rede

Este trabalho se debru��ou sobre a produ����o audiovisual das movimenta����es de protesto ocorridas em Natal, capital do Rio Grande do Norte, entre maio e junho de 2011, denominadas #ForaMicarla. Objetivou-se caracterizar esta produ����o numa tentativa de responder o porqu�� e como eles lan��aram m��o do vídeo em suas a����es, sob as hip��teses de que a midiatiza����o e o acesso facilitado a estas tecnologias tinham a ver com suas op����es. Lan��ou-se m��o de procedimentos hist��rico-dial��tico e teoria fundamentada (Fragoso, Recuero e Amaral), a partir das t��cnicas de observa����o n��o-participante, aplica����o de question��rio e entrevistas em profundidade. Posicionou-se estas movimenta����es sociais em redes, na conceitua����o de Castells, dentro de uma perspectiva da contra-hegemonia como uma M��dia Radical (Downing), sendo um Audiovisual de Combate (Bustos). Esta m��dia possui as caracter��sticas do Novo Protesto (Assis), inserido no contexto da midiatiza����o da sociedade de Ver��n e Sodr��. Tentou-se tamb��m identificar historicamente as origens do poder hegem��nico e a estrutura olig��rquica, coronel��stica e familiar que fundou o poder no Brasil, apropriando-se do conceito de Coronelismo Eletr��nico de Lima e Lopes e Assistencialismo Midi��tico de Guareschi, Dias e Hartmann. Atrav��s dos dados obtidos houve a emers��o das categorias para an��lise deste tipo de audiovisual.