Fluorescence Of Rays X
Mostrando 1-12 de 28 artigos, teses e dissertações.
-
1. Use of SnOx:F in the Recycling of Silicon Solar Cells
Amongst the many parts of a silicon cells photovoltaic module, silicon is the most important and expensive constituent. Thus, research on silicon recycling from damaged cells can lead to economic and environmental benefits. In this work, the broken silicon cells were tailored to function along with the fluorine-doped tin oxide as the transparent electric con
Mat. Res.. Publicado em: 22/01/2018
-
2. Synthesis and characterization of Ni-Mo filler brazing alloy for Mo-W joining for microwave tube technology
A brazing process based on Ni-Mo alloy was developed to join porous tungsten cathode bottom and dense molybdenum cathode body for microwave tubes manufacture. The Ni-Mo alloy was obtained by mixing and milling powders in the eutectic composition, and applied on the surface of the components. The brazing was made at 1400 °C by using induction heating in hydr
Mat. Res.. Publicado em: 08/02/2013
-
3. Estudo do processo de esferolização de partículas vítreas visando a aplicação em radioterapia interna seletiva / Study of the spheroidization process of glass particles for selective internal radiotherapy
The selective internal radiotherapy is an alternative method to treat hepatocellular carcinoma. Glass microspheres containing radionuclides are introduced in the liver through the hepatic artery, and they are housed preferentially in the region where the cancer cells are located. The microspheres are trapped in the arterioles which feed the tumors, and the &
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
-
4. Efeitos de raios-X de baixa energia em células mamárias / Effects of low energy x-rays in mammary cells
Radiation doses of low-energy can induce double-stranded breaks in DNA as well resulting in altered profiles of gene expression related to these injuries. The damage is not repaired or poorly repaired leading to increased susceptibility to oncogenic transformation since most important biological effects caused by ionizing radiation are mutation and carcinoge
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/08/2011
-
5. DEVELOPING A VERSATILE MONOCHROMATIZATION SYSTEM FOR X-RAYS / DESENVOLVIMENTO DE UM SISTEMA DE MONOCROMATIZAÇÃO VERSÁTIL PARA RAIOS-X
The investigation of the dynamics of the interaction of high-energy X-rays and molecules of biological interest requires the energy of the X-rays to be well defined, so that one can establish the dependence of the molecular ionization and fragmentation patterns as functions of the incident beam energy. For this purpose, a versatile system for the monochromat
Publicado em: 2009
-
6. Estudo e caracterização de matérias-primas para o desenvolvimento de blocos sílico-calcários
The types of products manufactured calcium silicate blocks are very diversified in its characteristics. They include accessory bricks, blocks, products in dense material, with or without reinforcements of hardware, great units in cellular material, and thermal insulating products. The elements calcium silicate are of great use in the prefabricated constructi
Publicado em: 2009
-
7. Reciclagem de pilhas: recuperação do manganês na forma do dióxido de manganês eletrolítico. / Recycling of batteries: recovery of manganese in the form of electrolytic manganese dioxide.
Considering the growing demand for products containing manganese in its composition, this work seeks to verify the possibility of using depleted batteries as a source of manganese applying the electrolytic process. It was used an electrolyte solution containing the metal ions: Ca (270mg / L), Ni (3000 mg / L), Co (630 mg / L), Mn (115300 mg / L), Ti (400 mg
Publicado em: 2009
-
8. Estudo da dissolução de vidros niobofosfato em água e em solução simuladora de fluído fisiológico / Evaluation of the dissolution rate of niobium phosphate glasses in water and simulated body fluid solution
The need to extend and improve the quality of life is leading to the search of new materials. Glasses containing phosphorous in their compositions are considered biomaterials and can be used as scaffolds because they have a structure close to the mineral component of bone tissues, and present relatively high solubility in water. The chemical composition, mor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/08/2008
-
9. Estudo da remoção de metais por leitos cultivados utilizando a fluorescência de raios X por reflexão total com radiação síncrotron / Study of the metal removal for constructed wetland using the fluorescence of rays X for total reflection with radiation syscrotron
O presente trabalho teve como objetivo avaliar a operação e o desempenho de seis Leitos Cultivados de Fluxo Subsuperficial que operaram como pós-tratamento de um Tanque Séptico Modificado, instalados na Faculdade de Engenharia Agrícola da Universidade Estadual de Campinas. O sistema em estudo é composto por três leitos retangulares e três quadrados,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2008
-
10. Characterization of cadmium and zinc telluride (CZT) and pin type silicon (Si-Pin) photodiode detectors for x-ray spectrometry / Characterization of cadmium and zinc telluride (CZT) and pin type silicon (Si-Pin) photodiode detectors for x-ray spectrometry / CaracterizaÃÃo dos detectores de telureto de cÃdmio e zinco (CZT) e fotodiodo de silÃcio tipo pin (Si-PIN) para a espectrometria de raios-x / CaracterizaÃÃo dos detectores de telureto de cÃdmio e zinco (CZT) e fotodiodo de silÃcio tipo pin (Si-PIN) para a espectrometria de raios-x
A detailed understanding of X-ray spectrum is essential for analyzing equipment that emits this kind of radiation in radiodiagnostic facilities. Information on the various parameters that are contained in this spectrum is important for quality control of X-ray equipment. Spectrometry of X-ray beams uses very often GeHP detectors, that have good detection eff
Publicado em: 2008
-
11. Caracterização e utilização de pó-de-pedra em revestimentos para restauração de edificações históricas em estilo art déco
In the decades of 30 and 40, the architectural style called art déco took place in many brazilian urban centers. It was based on a new technical and formal language, exploring the symmetry, straight lines, horizontality, ornamental cleaning, soberness and monumentality. This style set common the reinforced concrete application and the use of the stone dust
Publicado em: 2008
-
12. Beneficiamento e caracterização de resíduos gerados na produção de blocos cerâmicos visando à aplicação como adição pozolânica
The use of red ceramics bricks finely grinded as pozzolanic addition to cements, mortar and concrete reveals a viable alternative, with technical, economic and environmental advantages, joining wasted material by the industry, which not always has a proper destination, to the input and products wide used in the civil construction. This work presents the impr
Publicado em: 2008