Centro Universitario FEI: Envíos recientes
Mostrando ítems 1261-1280 de 2182
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γ-Particle coincidence technique for the study of nuclear reactions
(2014)The Saci-Perere γ ray spectrometer (located at the Pelletron AcceleratorLaboratory - IFUSP) was employed to implement the γ-particle coincidence technique for the study of nuclear reaction mechanisms. For this, the 18O+110Pd ... -
Dynamic distribution of potassium in sugarcane
(2013)In this work the distribution of potassium in sugarcane has been studied during its growth. The soil was prepared with natural fertilizers prepared with sugarcane bagasse. For the measurement of potassium concentration in ... -
Performance of electronic devices submitted to X-rays and high energy proton beams
(2012)In this work we have studied the radiation effects on MOSFET electronic devices. The integrated circuits were exposed to 10 keV X-ray radiation and 2.6 MeV energy proton beam. We have irradiated MOSFET devices with two ... -
Sugar cane nutrient distribution analysis
(2011)Neutron Activation Analysis (NAA), Molecular Absorption Spectrometry (UV-Vis), and Flame Photometry techniques were applied to measure plant nutrient concentrations of Br, Ca, Cl, K, Mn, N, Na and P in sugar-cane root, ... -
Comparative study of the proton beam effects between the conventional and Circular-Gate MOSFETs
(2012)The study of ionizing radiation effects on semiconductor devices is of great relevance for the global technological development and is a necessity in some strategic areas in Brazil. This work presents preliminary results ... -
Exploring the potential of the São Paulo potential
(2010)© 2010 Owned by the authors, published by EDP Sciences.Recent development of an imaginary potential based on the São Paulo potential is briefly presented. Further developments of the model in order to describe weakly bound ... -
High natural radiation in Brazilian sands
(2012)The present work investigated Brazilian beach sands in order to analyze the total external natural radiation dose using a gamma-ray spectrometry technique. The activities from the radionuclides 40K and the elements from ... -
Comparative experimental study between tensile and compressive uniaxially stressed nmugfets under x-ray radiation focusing on analog behavior
(2013)This paper describes a detailed experimental comparative study between nMuGFETs implemented with tensile and compressive stresses when submitted to X-ray radiation, taking into account different doses and different channel ... -
Elemental mapping of large samples by external ion beam analysis with sub-millimeter resolution and its applications
(2018)© 2018 Elsevier B.V.The elemental mapping of large areas using ion beam techniques is a desired capability for several scientific communities, involved on topics ranging from geoscience to cultural heritage. Usually, the ... -
Geobiological and diagenetic insights from Malvinokaffric Devonian biota (Chapada group, Paraná Basin, Brazil): Paleobiological and paleoenvironmental implications
(2017)© 2017, SEPM (Society for Sedimentary Geology).This study tests the presence of differential preservation in the Devonian Malvinokaffric fauna from the Chapada Group (Paraná Basin, Brazil). Results of EDXRF, EDS, Raman ... -
Deciphering the preservation of fossil insects: A case study from the Crato Member, Early Cretaceous of Brazil
(2016)© 2016 Osés et al.Exceptionally well-preserved three-dimensional insects with fine details and even labile tissues are ubiquitous in the Crato Member Konservat Lagerstätte (northeastern Brazil). Here we investigate the ... -
Study on application of a neuro-fuzzy models in air conditioning systems
(2015)© 2014, Springer-Verlag Berlin Heidelberg.In this paper, we present the application of neuro-fuzzy system—ANFIS for air conditioning systems to reduce electricity consumption. The current buildings have automation systems ...