Reactor Antineutrinos Signal all over the world

We present an updated estimate of reactor antineutrino signal all over the world, with particular attention to the sites proposed for existing and future geo-neutrino experiment. In our calculation we take into account the most updated data on Thermal Power for each nuclear plant, on reactor antineutrino spectra and on three neutrino oscillation mechanism.Comment: 4 pages including 1 figur

Determinação da taxa de secagem dos grãos em lavoura de sorgo e milho.

Nota prévia

Regional study of the Archean to Proterozoic crust at the Sudbury Neutrino Observatory (SNO+), Ontario: Predicting the geoneutrino flux

The SNO+ detector, a new kiloton scale liquid scintillator detector capable of recording geoneutrino events, will define the strength of the Earth radiogenic heat. A detailed 3-D model of the regional crust, centered at SNO+ and based on compiled geological, geophysical and geochemical information, was used to characterize the physical and chemical attributes of crust and assign uncertainties to its structure. Monte Carlo simulations were used to predict the U and Th abundances and uncertainties in crustal lithologies and to model the regional crustal geoneutrino signal originating from the at SNO+

Armazenamento de milho em fazendas.

bitstream/item/46851/1/Armazenamento-milho.pd

Análise econômica de lâminas de água e doses de nitrogênio, para cultura de milho, utilizando o modelo ceres-maize.

Para a simulacao dos dados necessarios nas analises do presente trabalho, utilizou-se o modelo CERES-MAIZE, que esta inserido no pacote DSSAT 3.0. Nas simulacoes, realizadas para o municipio de Janauba - MG, utilizou-se o cultivar de milho BR-201, desenvolvido na EMBRAPA Milho e Sorgo, que ocupa entre 5 a 7% da area de plantio da cultura no Brasil. Foram simulados os dados de produtividade do cultivar BR-201, em tres epocas de plantio (15.05, 15.10 e 15.11), com ou sem irrigacao, com as seguintes laminas d'agua 4,8,12,16,20,24,30 e 36mm, aplicadas em um turno de rega de 7 dias. As laminas de agua foram combinadas com as seguintes doses de nitrogenio 0, 30, 60, 90, 120, 150, 180 e 210 kg/ha 4. Os dados foram simulados utilizando-se dados climaticos de 18 anos, de 1977 a 1995. Verifica-se que o plantio de maio proporcionou maior retorno economico, indicando grande potencialidade do modelo para estudos de analise de producao. Recomendam-se simulacoes com outros cultivares mais adaptados ao plantio irrigado

Geoneutrinos and reactor antineutrinos at SNO+

In the heart of the Creighton Mine near Sudbury (Canada), the SNO+ detector is foreseen to observe almost in equal proportion electron antineutrinos produced by U and Th in the Earth and by nuclear reactors. SNO+ will be the first long baseline experiment to measure a reactor signal dominated by CANDU cores ($\sim$55\% of the total reactor signal), which generally burn natural uranium. Approximately 18\% of the total geoneutrino signal is generated by the U and Th present in the rocks of the Huronian Supergroup-Sudbury Basin: the 60\% uncertainty on the signal produced by this lithologic unit plays a crucial role on the discrimination power on the mantle signal as well as on the geoneutrino spectral shape reconstruction, which can in principle provide a direct measurement of the Th/U ratio in the Earth.Comment: 7 pages including 2 figures and 1 table, in XIV International Conference on Topics in Astroparticle and Underground Physics (TAUP 2015) IOP Publishing , published on Journal of Physics: Conference Series 718 (2016) 06200