Sub Images
Mostrando 1-12 de 80 artigos, teses e dissertações.
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1. Pastures Degradation and the Relation with Pedo-Geomorphological Attributes in Watershed
ABSTRACT The objective of this study was to map the levels of degradation of pastures and its association with chemical properties of the soil and relief. We selected a sub-basin located in the municipality of Viçosa, Minas Gerais, and we mapped the degradations through Ikonos images that were submitted for classification. Soil samples were collected and an
Floresta Ambient.. Publicado em: 30/09/2019
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2. Universalidade e essencialidade: elementos de um discurso matemático
Resumo O presente artigo decorre de dados obtidos de nossa investigação de mestrado, finalizada em 2017, que buscou, na maior parte do tempo, estudar as tipologias de discursos no contexto de um subprojeto de matemática do Programa Institucional de Bolsas de Iniciação à Docência. Na investigação, constituiu-se um agrupamento específico de enunciado
Educ. Pesqui.. Publicado em: 18/07/2019
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3. MAPEAMENTO E ANÁLISE DE GEOCOBERTURAS NO CHAPADÃO DO DIAMANTE - MG - BRASIL
RESUMO O mapeamento e a compreensão das interações entre as geocoberturas do Chapadão do Diamante com os aspectos morfométricos e estruturais do relevo a partir da aplicação de rotinas de análise espacial e geoestatística são os principais objetivos desta pesquisa, realizada na porção extremo leste da Serra da Canastra (Minas Gerais, Brasil). O e
Mercator (Fortaleza). Publicado em: 01/07/2019
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4. Remote Sensing and Geostatistics Applied to Post-stratification of Eucalyptus Stands
ABSTRACT Brazil has many rural properties with unmanaged eucalyptus stands. These plantations are heterogeneous, presenting different tree sizes, advanced ages, and large wood volumes that can be quantified using forest inventories. The prediction error of dendrometric variables, mainly in highly heterogeneous areas, can be associated with inadequate forest
Floresta Ambient.. Publicado em: 30/07/2018
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5. Water Erosion in Oxisols under Coffee Cultivation
ABSTRACT Water erosion is one of the main environmental impacts of land use. When soil and water losses occur, nutrients essential for the growth and maintenance of plants are removed, with harmful outcomes on the sustainability of agriculture and the environment. In addition, they lead to other deleterious effects, such as sedimentation and eutrophication o
Rev. Bras. Ciênc. Solo. Publicado em: 02/07/2018
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6. Color electron microprobe cathodoluminescence of Bishunpur meteorite compared with the traditional optical microscopy method
Abstract Cathodoluminescence (CL) imaging is an outstanding method for sub classification of Unequilibrated Ordinary Chondrites (UOC) - petrological type 3. CL can be obtained by several electron beam apparatuses. The traditional method uses an electron gun coupled to an optical microscope (OM). Although many scanning electron microscopes (SEM) and electron
REM, Int. Eng. J.. Publicado em: 2018-04
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7. Segmentation Methods for Micro CT Images: A Comparative Study Using Human Bone Samples
Resumo A microtomografia computadorizada (microTC) é uma modalidade de imagem não destrutiva utilizada para avaliar a morfometria óssea. Para análise acurada, faz-se necessário segmentar o tecido ósseo do fundo (background) da imagem, evitando assim, sub ou sobre estimação do volume ósseo real. Desta forma, fica evidente que os métodos de segmenta�
Braz. Dent. J.. Publicado em: 2018-03
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8. Microwave-Assisted Oxidation of Organic Matter Using Diluted HNO 3 under O 2 Pressure: Rationalization of the Temperature Gradient Effect for Acid Regeneration
Oxidation using diluted HNO3 solution is dependent on reactions taking place in the gas phase, resulting in HNO3 regeneration, thus allowing sub stoichiometric reactions (16.7 mmol of C oxidized with 10.4 mmol of HNO3). Reactions for HNO3 regeneration are dependent on temperature gradient along reaction vessel. Thermographic images were obtained of external
J. Braz. Chem. Soc.. Publicado em: 2017-09
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9. Fault condition detection for a copper flotation process based on a wavelet multi-scale binary froth image
AbstractConsidering the difficulty of detecting the fault condition of copper flotation in real-time, a new fault condition detection method based on the wavelet multi-scale binary image is proposed. Firstly, the froth gray image is decomposed into approximation sub-images and detailed sub-images by wavelet transformation, whereby the approximation sub-image
Rem: Rev. Esc. Minas. Publicado em: 2015-06
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10. Laceration in rat gastrocnemius. Following-up muscle repairing by ultrasound biomicroscopy (in vivo), contractility test (ex vivo) and histopathology
PURPOSE:Implement a laceration protocol of the rat lateral gastrocnemius (LG) and following-up its repair with ultrasound biomicroscopy (UBM), contractility tests and histology.METHODS: Sixty-three male Wistar rats were distributed into two groups. One, with sub-groups GI, GII and GIII (n=12), each containing right LG lacerated (n=6), control and sham (n=3)
Acta Cir. Bras.. Publicado em: 2015-01
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11. Plantar thermography is useful in the early diagnosis of diabetic neuropathy
OBJECTIVES: This study evaluated plantar thermography sensitivity and specificity in diagnosing diabetic polyneuropathy using cardiac tests (heart rate variability) as a reference standard because autonomic small fibers are affected first by this disease. METHODS: Seventy-nine individuals between the ages of 19 and 79 years old (28 males) were evaluated and
Clinics. Publicado em: 2012-12
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12. Inversão sísmica para impedância acústica na caracterização de reservatórios : impacto da extração da wavelet e do aumento da banda de frequências / Seismic inversion to acoustic impedance in reservoir caracterization : the impact of wavelet extraction and increase the frequency band
The substrates that constitute a reservoir are identified using seismic data. The process consists of determining reservoir petrophysical properties. However, sub-seismic layers structures are masked due to the limitation of conventional seismic data. The failure provided by these data produces an erroneous model of reservoir. The lack of vertical resolution
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011