Materials Physics
Mostrando 13-24 de 76 artigos, teses e dissertações.
-
13. Bremsstrahlung de elétrons no microtron do IFUSP: medidas, simulação e proposta de aplicação ao estudo da ressonância fluorescente nuclear / Electron Bremssthahlung in the IFUSP microton: measurements, simulation and proposal for a nuclear resonance fluorescence observation setup
The results of the first experiments carried out in the new electron accelerator of the Linear Accelerator Laboratory (LAL) of the Physics Institute of Universidade de São Paulo are reported here. A 1.9 MeV beam line, which allows the use of the injector beam for experimental physics, was added to the original accelerator design. Electron bremsstrahlung spe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
-
14. Teste e comparação de modelos matemáticos para o traçado de curvas granulométricas.
RESUMO: O conhecimento sobre a distribuição granulométrica de partículas sólidas é essencial para as áreas de material de construção, mecânica dos solos, física dos solos, hidrossedimentologia, entre outras. Em geral, as técnicas utilizadas para a avaliação da distribuição granulométrica de amostras resultam em valores pontuais, dependendo d
Planaltina. Publicado em: 2011
-
15. Fabricação e caracterização de filmes automontados de PAH/BSA / Fabrication and characterization of LbL films of PAH / BSA
In the last years techniques have been developed for the development of science and technology concerning all science fields, such as physics, chemistry and biology. The study of the protein adsorption processes on the solid surfaces is of great importance in the development of biocompatible materials. The Layer-by-Layer deposition technique, where self-asse
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/08/2010
-
16. ESTUDO E IMPLEMENTAÇÃO DE TESTES DE CONTROLE DE QUALIDADE EM NEGATOSCÓPIOS NA CIDADE DE ARACAJU-SE. / STUDY AND IMPLEMENTATION OF TESTS QUALITY CONTROL NEGATOSCOPES THE CITY OF ARACAJU.
Taking into account the requirement of current legislation in Brazil, Decree 453/98, the Ministry of Health and several subtle nature of radiographic findings, it is important to know how the detectability of objects with lower density or smaller can be influenced by the intensity of light light box used in his lectures. Thus, this project aimed to establish
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2010
-
17. Photoacoustic spectroscopy applied to glass transition temperature determination of polymers / Aplicação da espectroscopia fotoacústica na determinação da temperatura de transição vítrea de polímeros
Photoacoustic spectroscopy (PAS) is a non-destructive technique and it has been largely applied to the thermal and optical characterization of materials. PAS technique is based on the photoacoustic effect which consist, basically, absorption of a modulated electromagnetic radiation and generation of heat inside of the material studied (sample), by a nonradia
Publicado em: 2010
-
18. Saberes em ciências naturais : o ensino de física e química no Colégio Culto à Ciência de Campinas - 1873/1910 / Natural Sciences acknowledgement : the teaching of physics and chemistry at Colégio Culto à Ciência of Campinas - 1873 - 1910
The thesis is about the beginning of Physics and Chemistry in the secondary educational system in Brazil and the aim of this study is ""The Colégio Culto à Ciência" from Campinas. The period between years 1873 and 1910 is analyzed, which a greater valuation of sciences occurred in relation to the predominantly humanistic education practiced by that time.
Publicado em: 2010
-
19. Nanocompósitos de PVC com argilas organofílicas / PVC nanocomposites with organoclays
Polymer/ inorganic filler composite materials have increasingly attracted the attention of scientific community and industry over the past years due to their relatively ease of production and the possibility of obtaining unique properties as a result of these combinations. Simultaneously, recent advances in chemistry, physics and materials engineering have p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/12/2009
-
20. Simulação da geometria e do desempenho do detector de antineutrinos do Projeto Angra / Simulation of the design and performance of the detector antineutrinos Angra Project
In this work is presented a comparative study between some geometries for the Neutrinos Angra Project detector. This Project was born from a colaboration that is dedicated to the construction of a compact antineutrinos detector for monitoring, in real time, the thermal power of Angra II nuclear reactor. Through the antineutrinos ux is possible to get informa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/2009
-
21. Active learning in geometrical optics: experiments and interactive demonstrations. / Aprendizagem ativa em ótica geométrica: experimentos e demonstrações investigativas
There is nowadays consensus among the physics education researchers that the traditional teaching methods are not the most effective in promoting real engagement of the students in the teaching/learning process. Several researchers named Active Learning (AL), methods that require this engagement and research evidences indicate that this approach is the most
Publicado em: 2009
-
22. Estudo do mecanismo de deposição de filmes finos de nitreto de boro assistida por feixe de íons / Study of the deposition mechanism of boron nitride thin films by ion seam assisted deposition
Filmes finos de BN foram depositados em uma ou duas camadas, em temperaturas entre a temperatura ambiente e 400oC, por deposição a vapor de átomos de boro sobre substratos de Si (111) ou Si (100), com irradiação simultânea de íons de argônio e/ou nitrogênio. A energia de íons variou de 400 a 1000 eV, e a razão de chegada ARR(N/A), definida pela ra
Publicado em: 2009
-
23. Readings in physics lessons in the education of young and adults of secondary education / Leituras em aulas de fisica na educação de jovens e adultos no ensino medio
The present study analyzes the discourse observed in Physics classes, for young adults and adults, in a High School Educational Project, in the region of Campinas. The aim was to understand the interpretation gestures of youngsters and adults in Secondary Education, (NT: EJA/EM - abbreviation in Portuguese for young and adult learners /secondary education) u
Publicado em: 2009
-
24. Geometria, Topologia e Elasticidade: aplicações a membranas e outros sistemas bidimensionais
Geometry, topology and elasticity are found in various branchs of physics and they play important roles in the understanding of many physical phenomena. In this work, we present three diferent systems where we can see such importance. First, a quantum neutral particle, constrained to move on a conical surface, is used as a toy model to explore bound states d
Publicado em: 2009