Atomic Project
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. New Design of Mini PTFE Vessels for Sample Preparation in Micro Scale: Determination of Cd, K, Mg and Na in Biological Sample
This paper presents a study involving the development of a new mini polytetrafluoroethylene (PTFE) vessel project for biological sample preparation in micro scale in closed system with microwave radiation for subsequent determination of Cd, K, Mg and Na by atomic spectrometry techniques. All experiments were carried out in micro quantities of samples (up to
J. Braz. Chem. Soc.. Publicado em: 2017-10
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2. Monitoramento ambiental de zinco em produtos agrícolas / Environmental monitoring of zinc in agricultural products
Large areas have been affected by heavy metals in concentrations which may pose environmental hazard. Due to increased industrial activity and highly technical agriculture, it becomes critical to monitor the levels of heavy metals in soil, because plants behave as a mechanism for transfer of contaminants from soil to higher levels of the food chain. Ingestio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/10/2012
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3. Caracterização térmica e estrutural de pós e filmes finos de BaTiO3 sintetizados via método Pechini / Thermal and structural characterization of powders and thin films of BaTiO3 synthesized by Pechini method
Amorphous oxides are chemical compositions whose atomic or molecular configuration does not follow a periodicity like it happens with crystals, which are essentially constituted by oxygen atoms, which has to be the most electronegative element, and other elements. The barium titanate (BaTiO3), amorphous oxide obtained through this work has tetragonal structu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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4. Implementation and qualification of neutronic calculation methodology in subcritical reactors driven by external neutron sources and applications / Implementação e qualificação de metodologia de cálculos neutrônicos em reatores subcríticos acionados por fontes externa de nêutrons e aplicações
This works had as goal to investigate calculational methodologies on subcritical source driven reactor, such as Accelerator Driven Subcritical Reactor (ADSR) and Fusion Driven Subcritical Reactor (FDSR). Intense R&D has been done about these subcritical concepts, mainly due to Minor Actinides(MA) and Long Lived Fission Products(LLFP) transmutation possibilit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2011
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5. German physics and atomic project in World War II / A física e o projeto atômico alemães na Segunda Guerra Mundial
A Alemanha iniciou o século XX com uma posição influente na comunidade científica mundial, o que é evidenciado na quantidade de Prêmios Nobel e nas descobertas realizadas no país, por alemães e estrangeiros que fizeram carreira por lá. Esse estado de coisas poderia ter mudado após o final da Primeira Guerra Mundial, quando a fragilidade da Alemanha
Publicado em: 2010
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6. 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
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7. Construção de uma armadilha magneto-ótica para aplicações em informação quântica e física atômica / Construction of a Magnet-Optical Trap for Aplications at Quantum Information and Atomic Physics
We built a magneto-optical trap (MOT) for rubidium as a first step for the trapping of a cloud of cold atoms in a periodic potential formed by light beams. This system will be used for experiments in atom physics, with possible applications in quantum information. A MOT is necessary to avoid the problems imposed by the thermal agitation of the atoms to the m
Publicado em: 2009
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8. Introdução de tópicos de física moderna e contemporânea no ensino médio por meio do estudo de ondas eletromagnéticas
Nowadays it is necessary, urgent and inevitable, to introduce topics on modern and contemporary Physics in Brazilian schools. It is unacceptable that in the 21st century, our students, in the highlight of the use of technology promoted by modern Physics, have no background of this fascinating and wide area of Physics. In this research we propose the introduc
Publicado em: 2009
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9. PROJETO, OTIMIZAÇÃO, SIMULAÇÃO E PREDIÇÃO DE PROPRIEDADES DE NANOESTRUTURAS ATRAVÉS DE TÉCNICAS DA INTELIGÊNCIA COMPUTACIONAL: NANOTECNOLOGIA COMPUTACIONAL INTELIGENTE / DESIGN, OPTIMIZATION, SIMULATION AND PREDICTION OF NANOSTRUCTURES PROPERTIES BY COMPUTATIONAL INTELLIGENCE TECHNIQUES: INTELLIGENT COMPUTATIONAL NANOTECHNOLOGY
This thesis investigates the Intelligent Computational Nanotechnology, that is, the support of Computational Intelligence (CI) techniques in the challenges faced by the Nanoscience and Nanotechnology. For example, Neural Networks are used for build Inference systems able to relate a set of input parameters with the final characteristics of the nanostructures
Publicado em: 2009
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10. DLC with silver nanoparticles study for space and biomedical applications / Estudo de crescimentos de filmes de DLC com nanopartículas de prata para aplicações espaciais e biomédicas
Diamond-like carbon (DLC) is a metastable form of amorphous carbon with high mechanical hardness, chemical inertness, optical transparency, low friction coefficient and its wear resistant. Since centuries, silver is known as bactericidal agent and, as a soft metal, its also used as a solid lubricant. This project develops a deposition process to insert silve
Publicado em: 2008
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11. Distribution manager of the Xchart runtime environment in J2EE / Gerente de distribuição do ambiente Xchart em J2EE : sistemas reativos distribuidos na tecnologia Xchart
The aim of the current project is the development of the Distribution Manager of the Xchart runtime environment. The Xchart environment as defined by the Xchart technology is composed by a set of tools that supports the development of dialogue managers of user interfaces. The specification of these dialogue managers is modular and describes the concurrent ex
Publicado em: 2005
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12. POLARIZAÇÃO ELETROTÉRMICA DE VIDROS E FIBRAS ÓPTICAS / GLASS AND OPTICAL FIBER ELECTROTHERMAL POLING
Over the past few years, there has been a growing demand for optical components for telecommunication systems. In order to increase the efficiency of these components, reduce costs and allow integration to current systems, efforts have been made in researching new materials, for example, silica. Due to its isotropic nature, silica, ordinarily, does not prese
Publicado em: 2005