Incident Energy
Mostrando 25-36 de 95 artigos, teses e dissertações.
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25. Estudo de desempenho do aquecedor solar de baixo custo
One alternative to reduce consumption of electric energy to heat water will be popularize the use of solar energy. This work comes to contribute of studies about the Low Cost Solar Heater , ASBC, which is a new concept of solar water heater for home, all made by polymeric materials with relatively small investment and can be built manually. The plate of the
Publicado em: 2009
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26. Numerical and analytical study for the determination in natural fire situation of the critical load on steel beams under concentrated load / Estudo numérico e analítico para determinação em situação de incêncio natural da carga crítica de vigas de aço com carga concentrada
Fire over a structural system is considered an accidental load and can generate structural collapses. The catastrophic effects of a fire on a structural system should always be avoided with preemptive actions. Therefore, it is essential to have the appropriate knowledge of the structure behavior under fire and to take appropriate actions to avoid its collaps
Publicado em: 2008
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27. FREQÜÊNCIA DE IRRIGAÇÃO NO CULTIVO HIDROPÔNICO DA ALFACE
The objective of the work was to verify the influence of four intervals between the irrigations on the production of lettuce in hydroponics system and the retention of nutrient solution, besides more determining the best interval between irrigation at each time of cultivation. The experiments were carried out at four times during one year, in the nutrient fi
Publicado em: 2008
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28. Multiple scattering theory for pion-nucleus elastic scattering and the in-medium piN amplitude
Elastic scattering of positive and/or negative pions (pi+ and/or pi-) by nuclei has been studied by means of Glauber's multiple scattering theory (GMST). The differential, total and total elastic cross sections using both the full series expansion and the first order correction (called optical limit results, OLA) of the Glauber amplitude, have been calculate
Brazilian Journal of Physics. Publicado em: 2007-06
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29. Sistemas químicos integrados via complexos de rênio(I) e rutênio(II) na conversão de energia / Chemical integrated systems via rhenium and ruthenium complexes on energy conversion
The focus of this work is on two chemical integrated systems: dye-sensitized solar cells, Dye-Cells®, and photosensors based on rhenium(I) compounds. Novel ruthenium(II) compounds were synthesized, characterized and investigated as dye-sensitizers. The results of solar cells sensitized by cis-[(H3BCN)2Ru(dcbH2)2], H3BCN- = cyanoborohydride, dcbH2 = acid-4,4
Publicado em: 2007
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30. TURBULENT FLOWS OF CO2 IN A RICE CROP IRRIGATED IN RS (BRAZIL) / FLUXOS TURBULENTOS DE CO2 EM UMA ÁREA DE ARROZ IRRIGADO NO RS
This thesis quantifies the net change of CO2 (NEE) in an irrigated rice crop cultivation in RS (Brazil). The research is part of the project CT-HIDRO, which presents as main purpose the description of surface conditions for different ecosystems in the country. Data were gathered during the cultivation period, from October 2003 to March 2004. During this time
Publicado em: 2007
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31. Estudo da formação de rastos nucleares em polímeros / Study of the Nuclear Tracks Formation in Polymers
The research in the field of material modification with ion implantation has greately improved, stimulated by technological applications in biology, medicine, electronics and other related areas. One of the correlated aspects in understanding these new materials is the identification and characterization of the damage produced by ion beam irradiation. In thi
Publicado em: 2007
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32. PROPOSAL OF PROCEDURES TO PREVENT ERRORS IN RADIOTHERAPY BASED IN LEARNED LESSONS OF ACCIDENTAL EXPOSITIONS / Proposta de procedimentos para evitar erros em radioterapia baseados em lições aprendidas de exposições acidentais
In order to consider some procedures to prevent errors in radiotherapy based in learned lessons of accidental expositions and in accordance with information contained in international reports elaborated by International Atomic Energy Agency (IAEA) and of the data base availability by the European group Radiation Oncology Safety Information System (ROSIS) on
Publicado em: 2007
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33. Single neutron pick-up on 104Pd
Low-lying levels of 103Pd have been investigated through the (d,t) reaction on 104Pd, at an incident deuteron energy of 15.0 MeV. Outgoing particles were momentum analyzed by an Enge magnetic spectrograph and detected in nuclear emulsion plates, with an energy resolution of 8 keV. Previous (d,t) work suffered from a much worse resolution than that here achie
Brazilian Journal of Physics. Publicado em: 2006-12
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34. Surface roughness of thin gold films and its effects on the proton energy loss straggling
We present a description of the effect of the surface roughness on the energy straggling associated to the energy loss distributions of protons transmitted through a self supported metallic thin foil. For this purpose we prepared a polycrystalline gold thin films using the standard sputtering method with different deposition rates. The statistics of the surf
Brazilian Journal of Physics. Publicado em: 2006-09
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35. Spallation physics and the ADS target design
This paper reviews the physics of the spallation which is a nuclear reaction in which a particle (e.g. proton) interacts with a nucleus. Given to the high energy of the incident proton, in a first stage it interacts with the individual nucleons in an intranuclear cascade which leads to the emission of secondary particles (neutrons, protons, mesons, etc.). In
Brazilian Journal of Physics. Publicado em: 2005-09
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36. In-beam gamma ray spectroscopy of 58Co
The odd-odd 58Co nucleus has been studied with the 51V(10B, p2n) reaction at 33-MeV incident energy and the gamma-spectrometer Saci-Pererê. Excited states up to 8.0 MeV and spin up to 11+ have been observed. The results are compared to Shell Model calculations using the GXPF1 effective interaction, developed for use in the fp shell. The pif7/2-1
Brazilian Journal of Physics. Publicado em: 2005-09