Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-06-26T19:17:09Z No. of bitstreams: 1 2016 - Marcelo de Azevedo Botelho.pdf: 2703391 bytes, checksum: 95b223851d104c5da9aa08affc95cadc (MD5) / Made available in DSpace on 2017-06-26T19:17:09Z (GMT). No. of bitstreams: 1 2016 - Marcelo de Azevedo Botelho.pdf: 2703391 bytes, checksum: 95b223851d104c5da9aa08affc95cadc (MD5) Previous issue date: 2016-09-01 / This work aims to discuss the relations between the moralists news of the Catholic Press Guanabara and the censorship of public entertainment by J?nio Quadros through the analysis conveyed texts and articles in the Estr?la do Mar magazine, the magazine of the Mensageiro do Cora??o de Jesus, in the newspaper A Cruz in the and magazine PB: Paz e Bem, during the period from 1960 to 1961. The analysis of the sources revealed that, far from being isolated measures J?nio Quadros, they met the demands of sectors within the Church. Therefore, we will seek to answer some questions that were asked during the investigation: commitment of the Catholic Press Guanabara to form a public opinion favorable to the moralization of customs and habits resembled the J?nio measures? The much-vaunted "communist threat" and liberalism had direct influence on the presidential approval of these acts? As these four printed positioned themselves in relation to the sharp political polarization that time? Between conservative and progressive Catholics printed, there was congruence and disagreements about the censorship of morals? / Este trabalho tem como objetivo principal discutir as rela??es entre os notici?rios moralistas da imprensa cat?lica da Guanabara, por meio da an?lise de textos e artigos veiculados nas revistas Estr?la do Mar, Mensageiro do Cora??o de Jesus, PB: Paz e Bem e no jornal A Cruz durante o per?odo de 1960 a 1961, e a censura ?s divers?es p?blicas nos decretos de J?nio Quadros. Buscamos responder ?s seguintes quest?es colocadas durante a investiga??o: o empenho da imprensa cat?lica da Guanabara para formar uma opini?o p?blica favor?vel ? moraliza??o dos usos e costumes assemelhava-se ?s medidas de J?nio? A t?o propalada ?amea?a comunista? e o liberalismo tiveram influ?ncia direta na aprova??o desses atos presidenciais? Como que esses quatro impressos se posicionaram em rela??o ? bipolariza??o pol?tica acentuada nessa ?poca? Entre os impressos cat?licos conservadores e progressistas, havia congru?ncias e diverg?ncias acerca da censura aos costumes? A hip?teses central defendida ? a de que longe de serem medidas isoladas de J?nio, elas atendiam ?s demandas de setores no interior da Igreja.

Orientador: Yoshitaka Gushikem / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química / Made available in DSpace on 2018-08-22T21:51:26Z (GMT). No. of bitstreams: 1 Barros_SergioBitencourtAraujo_D.pdf: 3406613 bytes, checksum: ba4e04d5f064d92f2ac7e2d183bca150 (MD5) Previous issue date: 2013 / Resumo: Este trabalho apresenta a síntese, caracterização e aplicação de matrizes cerâmicas condutoras SiO2/C morfologicamente e texturalmente diferentes e do compósito cerâmico microporoso SiO2-NiO não modificado e modificado com hidróxido de níquel. Assim, três materiais carbono cerâmicos SiO2/C com diferentes porosidades foram preparados pelo método sol-gel, usando como catalisador HNO3, HF e HNO3/HF, sendo as áreas superficiais (SBET) dos produtos obtidos determinadas como 246, 201 e 356 m g, respectivamente. Os materiais foram caracterizados usando isotermas de adsorção-dessorção de N2, microscopia eletrônica de varredura (MEV) e medidas de condutividade. As matrizes SiO2/C foram usadas como suporte para imobilização in situ de ftalocianina de Ni(II) (NiPc) em suas superfícies. Medidas de XPS foram usadas para determinar as razões atômicas Ni/Si dos materiais modificados com NiPc. Eletrodos de disco rígido preparados a partir das matrizes SiO2/C modificadas com NiPc foram testados como sensores para dopamina. O eletrodo modificado preparado usando HNO3 mostrou excelente atividade catalítica para determinação simultânea de ácido ascórbico (H2AA) e dopamina (DA), com sensibilidade de 53,02 e 104,17 mA mmol dm, respectivamente. Numa segunda etapa, um composito SiO2-NiO preparado pelo método sol-gel foi calcinado a 673 K e caracterizado por infravermelho, difração de raios X, isotermas de adsorção-dessorção de N2, MEV, microscopia eletrônica de transmissão, XPS e condutividade. O material obtido mostrou-se microporoso e microestruturalmente caracterizado pela formação de nanopartículas de NiO, na fase cristalina cúbica, bem distribuídas na matriz de sílica amorfa. Eletrodos do compósito microporoso SiO2-NiO apresentaram um bom desempenho na oxidação eletrocatalítica de H2AA, exibindo alta sensibilida(61,57 mA mmol dm), baixo limite de detecção (8,54 mmol dm) e longo tempo de estabilidade. Um sensor não enzimático sensível e seletivo para detecção de glicose foi preparado a partir do eletrodo SiO2-NiO modificado com hidróxido de níquel na fase estrutural a-Ni(OH)2. Os resultados obtidos para o eletrodo SiO2-NiO modificado com hidróxido mostraram a viabilidade da aplicação do material no desenvolvimento de um sensor amperométrico altamente sensível a glicose / Abstract: This work presents the synthesis, characterization an application of SiO2/C conductive ceramic matrices morphologically and texturally different and of microporous SiO2-NiO ceramic composite unmodified and modified with nickel hydroxide. Thus three SiO2/C carbon ceramic materials with different porosities were prepared by the sol-gel method, using HNO3, HF, and HNO3/HF as catalyst and the surface areas (SBET) of products were determined as 246, 201, and 356 m g, respectively. The materials were characterized using N2 adsorption¿desorption isotherms, scanning electron microscopy (SEM), and conductivity measurements. The SiO2/C matrices were used as supports for the in situ immobilization of Ni(II) phthalocyanine (NiPc) on their surfaces. XPS was used to determine the Ni/Si atomic ratios of the NiPc-modified materials. Pressed disk electrodes were prepared with the NiPc-modified matrices, and tested as sensors for dopamine. The electrode prepared using HNO3 showed excellent catalytic activity for the simultaneous determination of ascorbic acid (H2AA) and dopamine (DA), with sensitivities of 5.02 and 104.17 mA mmol dm, respectively. In a second step, a SiO2-NiO composite prepared by the sol-gel method was calcined at 673 K and characterized by infrared spectroscopy, X-ray diffraction, N2 adsorption¿desorption isotherms, SEM, transmission electron microscopy, XPS, and conductivity. The material obtained was found to be microporous and microstructurally characterized by the formation of NiO nanoparticles in the cubic crystalline phase, well distributed in the amorphous silica matrix. Electrodes of the microporous SiO2-NiO composite showed a good performance in the electrocatalytic oxidation of H2AA, exhibiting high sensitivity (61.57 mA mmol dm), low detection limit (8.54 mmol dm), and long term stability. A sensitive and selective nonenzymatic glucose sensor was prepared from the SiO2-NiO electrode modified with nickel hydroxide in the structural phase a-Ni(OH)2. The results obtained for the SiO2-NiO modified electrode showed the viability of applying the material in developing a highly sensitive amperometric glucose sensor / Doutorado / Quimica Inorganica / Doutor em Ciências

Denna studie har som syfte att belysa elevtexter från år nio med fokus på betyg och hur vanligt förekommande särskrivning är. Materialet består av elevtexter från de nationella proven 2003. Elevtexterna är indelade i tre grupper efter betyg och varje grupp består av tio texter. Analyser av elevtexter avser att verifiera eller falsifiera hypotesen om att lågpresterande elever gör mer särskrivningar än högpresterande elever. Resultatet visar att särskrivning förekommer i samtliga undersökningsgrupper. Elever med underkänt och elever med godkänt betyg gör relativt lika många särskrivningar och avsevärt fler än elever med mycket väl godkänt. Undersökningen visar dessutom att högpresterande elever vanligtvis särskriver två sammansatta substantiv, medan lågpresterande elever även gör särskrivningar på ord som inleds med ett förstärkningsprefix. En slutsats som kan göras är att hypotesen kan verifieras. Vidare kan utläsas att pedagogen till viss del accepterar särskrivning i det svenska språket. Bedömningen av nationella prov bygger på övergripande färdigheter som bland annat läsförståelse och problemlösning, därför är det av stor betydelse att undervisningen pedagogen bedriver problematiserar stavning och grammatik. Har eleverna tagit till sig kunskapen i undervisningen kan pedagogen se ett en utveckling vid bedömning av nationella prov.

Climate change and global warming caused by the increasing greenhouse gases emissions (such as CO2) in the atmosphere recently attract the attention of the scientific community. These large emissions have been correlated to the Global Warming effect which has many consequences across the globe, including glacial retraction, ocean acidification and increased severity of weather events. With green technologies still in the infancy stage, it can be expected that CO2 emissions will stay this way for a long time to come. It is necessary to find an alternative way to get rid of the resulting environmentally harmful emissions. A promising solution is the use of CO2-free electrical energy produced, for example, by renewable or nuclear sources, for dissociation of CO2 or other greenhouse gases, followed by their conversion into easily storable fuels. In this context, the CO2 re-utilization to synthesize syngas, fuels or chemical compounds as well as pure CO2 dissociation into CO and O2, is of a special interest. Among the different methods to convert CO2 into added-value products (thermolysis, thermochemical cycles, electrolysis, photocatalysis, etc), the discharges sustained by microwave radiation combining high electron and low gas temperature have already demonstrated huge potential for plasma-assisted CO2 conversion. The present research work is targeted to the systematic investigation of the microwave-assisted conversion of various CO2-based gas mixtures being especially focused on plasma catalysis. The different physical effects affecting the efficiency of plasma catalysis are considered, for a better understanding of the synergistic effects between plasma and catalyst. The characterization of microwave discharges is performed by various plasma diagnostics methods, including optical spectroscopy and gas chromatography. In addition, the catalysts have been characterized by the state of art material characterization techniques, such as Transmission electron microscopy (TEM), Raman spectroscopy, etc. Such a combined characterization of both plasma and catalysts is performed for the sake of better understanding of the plasma-catalytic processes.In the first part of this study, the different dissociation pathways of the studied molecule as a function of different plasma parameters are considered by evaluating the composition with different plasma diagnostic techniques. A simple increase of Specific Energy Input (SEI) is not a promising solution since in this case the energy efficiency drops. The beneficial effects of lowering the pulse frequency for increasing CO2 conversion efficiency are observed and discussed. The obtained results are explained by the relation between the plasma pulse parameters and the rates of the relevant energy transfer mechanisms in the discharge. Simultaneous dissociation of CO2 and H2O has been investigated as well. It was clearly demonstrated that both H2 and CO productions are strongly affected by the different plasma parameters. The second part of this study deals with the effects of catalyst preparation method, nature of plasma activation gas, gas admixture, as well as NiO content and their influences on the CO2 conversion and energy efficiencies in microwave plasma. It was found throughout this work that the catalyst preparation method has a significant effect on the chemical and physical properties of the catalysts, which in turn strongly influences CO2 conversion and energy efficiencies of this process. In particular Ar plasma treatment results in a higher density of oxygen vacancies and a very favorable distribution of nickel oxide on the TiO2 surface. It is concluded that, the oxygen vacancies are the key factor explaining high catalytic activity in CO2 decomposition. The dissociative electron attachment of CO2 at the catalyst surface enhanced by the oxygen vacancies and plasma electrons can explain the observed increase of CO2 conversion efficiency as well as the energy efficiency. A mechanism explaining the observed plasma–catalyst synergy is proposed. The overall aim is to establish a model describing the interaction between highly reactive species produced in plasma discharge and supported catalyst for the conversion of CO2 into useful compounds. / Doctorat en Sciences de l'ingénieur et technologie / info:eu-repo/semantics/nonPublished

Nowadays there is wide variety of programming languages and platforms providing com-plex set of tools for software development -- from mobile and desktop applications up to server applications. Java is one of the most popular choices for software project develop-ment since many years. Many changes and improvements of the Java language occurred throughout 23 years of development of the platform. Current version brings many changes description of whom is considered to be beneficial not only for developers but also for the community around Java platform. This thesis covers the changes that were introduced in the release of Java 7. The thesis lists the short review of main historical events that happened since the beginning of the platform and analyses changes in libraries as well as describes syntactical changes. Primary focus is placed on the NIO (New I/O) library, whose current name is Non-Blocking I/O (NIO.2). Even though massive changes had occurred in this library, not many people actually noticed anything. This unfortunate situation is now described as a quiet revolution. Last but not least a description of changes in other libraries and Java Virtual Machine is presented.

Dagens lärare i idrott och hälsa har stor frihet att forma undervisningen på det sätt som de själva tycker är bäst för eleverna, eftersom vare sig läro- eller kursplan nämner något om undervisningsformen. Detta skall dock ske i samverkan med eleverna. Därför behöver man också veta vilka uppfattningar eleverna har kring undervisningsformen. Trots det finns det idag inte mycket forskning inom området. Vilka uppfattningar har elever kring undervisningsformen i idrott och hälsa, i detta fall den könsblandade och den könsuppdelade? Syftet med det här examensarbetet var att undersöka elevers uppfattningar om könsblandad och könsuppdelad i undervisning i ämnet idrott och hälsa i årskurs nio. Sexton elever intervjuades för att få svar på detta. Resultatet visar att det finns både för- och nackdelar med de båda undervisningsformerna, men att den könsblandade undervisningen är mer populär än den könsuppdelade. En del elever menade att man gärna kan växla mellan de båda undervisningsformerna och andra var av den uppfattningen att undervisningsformen inte spelade någon roll. Elevernas uppfattningar har hänförts till kategorierna lektionsklimat, den sociala faktorn, läraren, pojkars och flickors olikheter, eleven själv samt aktiviteten.

No description available.

Syftet med följande arbetet är att undersöker hur det gick för barn som föddes 1990 i nivåindelade klasser i en skola i södra sverige. Arbetet ger en översikt om tidigare forskning om nivåindelade klasser kontra blandklasser. Vi jämför samma elevers nationella prov i årskurs fem, då barnen fortfarande gick i blandklasser, med resultaten från de nationella proven i årskurs nio då eleverna hade gått i blandklasser i tre års tid. Jämförelsen görs i de tre kärnämnena matematik, svenska och engelska. Eleverna svarade också på en enkät om hur de upplevde sin klassituation..Resultaten visade att de elever som gick i de högsta klassnivåerna förbättrade sina studieresultat från år fem i en betydlig större utsträckning än barnen som gick i de lägsta klassnivåerna. Vår undersökning visar att de enda som gynnas av nivåindelningen faktiskt är lärarna.

In this work, a body of knowledge is presented which pertains to the growth, characterization and exploitation of high quality, novel II-IV oxide epitaxial films and structures grown by plasma-assisted molecular beam epitaxy. The two compounds of primary interest within this research are the ternary films NixMg1-xO and ZnxMg1-xO and the investigation focuses predominantly on the realization, assessment and implementation of these two oxides as optoelectronic materials. The functioning hypothesis for this largely experimental effort has been that these cubic ternary oxides can be exploited - and possibly even juxtaposed - to realize novel wide band gap optoelectronic technologies. The results of the research conducted presented herein overwhelmingly support this hypothesis in that they confirm the possibility to grow these films with sufficient quality by this technique, as conjectured. NixMg1-xO films with varying Nickel concentrations ranging from x = 0 to x = 1 have been grown on lattice matched MgO substrates (lattice mismatch ε < 0.01) and characterized structurally, morphologically, optically and electrically. Similarly, cubic ZnxMg1-xO films with Zinc concentrations ranging from x = 0 to x ≈ 0.53, as limited by phase segregation, have also been grown and characterized. Photoconductive devices have been designed and fabricated from these films and characterized. Successfully engineered films in both categories exhibit the desired deep ultraviolet photoresponse and therefore verify the hypothesis. While the culminating work of interest here focuses on the two compounds discussed above, the investigation has also involved the characterization or exploitation of related films including hexagonal phase ZnxMg1-xO, ZnO, CdxZn1-xO and hybrid structures based on these compounds used in conjunction with GaN. These works were critical precursors to the growth of cubic oxides, however, and are closely relevant. Viewed in its entirety, this document can therefore be considered a multifaceted interrogation of several novel oxide compounds and structures, both cubic and wurtzite in structure. The conclusions of the research can be stated succinctly as a quantifiably successful effort to validate the use of these compounds and structures for wide bandgap optoelectronic technologies.

Syftet med studien är att undersöka hur elever med utländsk bakgrund, som bor och går i skolan i mångkulturella och socialt utsatta områden, upplever sina möjligheter att lära matematik. Uppsatsen tar upp och diskuterar hur allmänna diskurser påverkar elevernas förgrunder och rationaler för lärande, och hur dessa på olika sätt bidrar till hur eleverna upplever sina möjligheter att lära matematik. Empirin består av fokusgruppintervjuer med årskurs 9 elever. Studien visar bland annat att elevers med utländsk bakgrund tillkortakommande i matematik påverkas av flera olika faktorer, varav de flesta eleverna inte själva kan förändra. Studien pekar på att det är av vikt att man även beaktar de allmänna diskursernas inverkan på elevernas möjligheter att lära matematik. Eleverna lever med dessa diskurser och har accepterat dem som ”sanna”. En implikation av resultaten i denna studie är att tillgången till en likvärdig matematikutbildning för elever i svensk grundskola behöver problematiseras och även inkludera faktorer som förekommer utanför matematikklassrummet / The purpose of the study is to examine how immigrant students, who live and attend school in multicultural and socially deprived areas, are experiencing their possibilities to learn mathematics. The thesis discusses how public discourses affect students’ foregrounds and rationales for learning in different ways, contributing to how the students perceive their possibilities to learn mathematics. The empirical material consists of focus group interviews with students in grade 9. The results show that immigrant students’ shortcomings in mathematics are affected by wide variety of influences, most of which are out of their control to change. The study suggests that it is of importance to consider the influence of public discourse on students’ possibilities to learn mathematics. Students live within these discourses and have accepted them as "the truth about the world". One implication from the findings is that access to an equivalent mathematics education for students in Swedish Compulsory School needs to be problematized and include factors outside of the classroom situation itself.