Instituto Federal Do Norte Of Minas Gerais Ifnmg

Januária, Brazil

Instituto Federal Do Norte Of Minas Gerais Ifnmg

Januária, Brazil

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Mendonca D.G.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Teixeira G.L.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Lima J.F.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Escobar S.A.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Gusmao C.A.,Instituto Federal Do Norte Of Minas Gerais Ifnmg
IMSCI 2016 - 10th International Multi-Conference on Society, Cybernetics and Informatics, Proceedings | Year: 2016

This paper aims to analyze the use of technology in indigenous environments as an instrument to preserve their culture and language. We also aimed here to display results of a first version of a cataloguing system we have been developing to store words from the Xacriabá language. We think that the availability linguistic data in any digital format may induce or support the cultural revival of indigenous peoples.


Rodrigues D.D.D.O.,Federal University of Amazonas | De Barros W.F.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | De Queiroz-Neto J.P.,Federal University of Amazonas | Fontoura A.G.,Federal University of Amazonas | Carvalho J.R.H.,Federal University of Amazonas
Proceedings - 2016 29th SIBGRAPI Conference on Graphics, Patterns and Images, SIBGRAPI 2016 | Year: 2016

The demand for efficient enhancement methods of underwater images of the rivers in the Amazon region is increasing. However, most of those in the region present moderate turbidity and low luminosity. This work aims to improve these images by non-linear filtering techniques, which promote the minimization of light interaction characteristics with the environment, loss of the contrast and colors. The proposed method is compared with two others techniques that requires a unique image as input. The results of the proposed method is promising, with better visual quality considering a wide range of experiments with simulation data and real outdoor scenes. © 2016 IEEE.


Silva H.R.F.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | de Aquino L.A.,Federal University of Viçosa | Batista C.H.,Instituto Federal Do Norte Of Minas Gerais Ifnmg
Bioscience Journal | Year: 2011

The residual nutrients of a crop can be significant for the productivity of other crops in succession. The objective was to evaluate the residual effect of phosphate fertilization on productivity and nutrient content in the index leaf of cultivated sunflower in succession to cotton. The experiment was installed in Quartzanic Neossoil. We adopted the randomized block design in factorial scheme with three replications. The treatments consisted of P doses (60 and 120 kg ha -1 of P 2O 5) x split four ways PS, P1, P2, and P3 (100/0, 80/20, 60/40, 40/60% of the applied dose at sowing and at 35 DAE in coverage respectively) and a treatment without P application. Phosphate fertilizer was applied to grown cotton before sunflower. We evaluated the number of days for R1, R5, and R6 stages, the number of leaves, and plant height in R1 and R5, the mass of a thousand seeds, the nutrient content in the index leaf, and sunflower productivity. The application of 60 kg ha -1 dose of P 2O 5 in cotton has allowed the productivity achievement of 2232 kg ha -1 in sunflower crop in succession. The greater portion of P dose application for covering the cotton plant (P3 = 60%) resulted in higher productivity of sunflower in succession, as well as in higher foliar content of P and Ca. N, P, K, Ca, Mg, S, B, and Mn sunflower foliar content were positively influenced by phosphorus application on cotton grown previously.


da Silva R.R.,Federal University of Viçosa | dos Reis M.R.,Federal University of Viçosa | Mendes K.F.,University of Sao Paulo | de Aquino L.A.,Federal University of Viçosa | And 2 more authors.
Bragantia | Year: 2013

The objective of this work was to determine the periods of weed interference in sunflower crops. Two experiments were done with the sunflower hybrid Helio 250, one in the summer and the other in the winter. For both experiments, a randomized block design with four repetitions was used and each experimental unit was composed of plants in five lines, 6.0 m in length, spaced 0.7 m apart. In the summer experiment eight periods of cohabitation and weedy plant control were evaluated: 10, 20, 30, 40, 50, 60, 70 and 88 days after emergence (dae). In the winter experiment, the periods were 7, 14, 21, 28, 38, 48, 58 and 82 dae. The dry matter mass, leaf area of sunflower plants, yield, thousand achenes mass and weedy plant dry matter mass were evaluated. The periods prior to interference (PPI), the critical periods of preventing interference (CPPI), and the total periods of preventing interference (TPPI) were estimated. Considering the yield of achenes in the summer, the PPI was 16 dae of the crop, the CPPI was 39 dae and the TPPI lasted 23 days of the crop cycle. In winter, the PPI was 12 dae and the CPPI lasted for 34 dae, resulting in a TPPI of 22 days.


Grossi M.C.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Justino F.,Federal University of Viçosa | Rodrigues R.A.,Federal University of Goais | Andrade C.L.T.,Embrapa Milho e Sorgo
Bragantia | Year: 2015

Based on sensitivity analyses the effect of changing in climate on sorghum has been investigated. This has been achieved by conducting crop modeling experiments carried out with weather observations and output of global climate models. As can be anticipated results demonstrated that the sorghum yield is more sensitive to rainfall, solar radiation and CO2 concentration. However, the increase in CO2 concentration has a positive effect on yield in years that the crop is submitted to water stress. This effect is extremely reduced under well watered conditions and therefore is subject to the climate inter-annual variability. Accumulated solar radiation along the sorghum cycle below 1900 MJ m–2 has also been shown to reduce the yield. Compared to other weather variables the sorghum yield is less sensitive to changes in relative humidity. In this sense, changes in stomatal closure and therefore photosyntesis is not highly dependent on water vapor pressure. These finds can be applied for both climate observations and global models output. © 2015, Instituto Agronomico. All rights reserved.


Brandi I.V.,Federal University of Minas Gerais | Santos E.M.S.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Carvalho B.M.A.D.,Federal University of Minas Gerais | Duraes C.A.F.,Federal University of Minas Gerais | And 4 more authors.
Journal of Microbiological Methods | Year: 2016

An efficient technique for evaluation of the quality control of vaccines against clostridiosis is described in this study. This technique is capable of quantifying the toxoid of the bacterium Clostridium perfringens Type D, which is commonly found within these vaccines. The described method is performed in vivo to quantify the toxoid, replacing the current predominant approaches that use the titration of toxins before the inactivation process. This method is based on the partial neutralization of a determined dose of antitoxin by testing different doses of the toxoid. In order to guarantee its reliability, it is essential for the technique to be validated. Thus, the technique was tested using the following validation parameters: specificity and selectivity, detection limit, linear correlation, precision and robustness, in agreement with the requirements of regulatory agencies and international committees from around the world. The method was found to be specific, selective, robust, precise, and linear inside a specific concentration range. Therefore, it could be applied to the quality control of clostridiosis vaccines with satisfactory results. © 2016 Elsevier B.V.


PubMed | Federal University of Tocantins, Instituto Federal Do Norte Of Minas Gerais Ifnmg, Federal University of Minas Gerais and University of Sao Paulo
Type: | Journal: Journal of microbiological methods | Year: 2016

An efficient technique for evaluation of the quality control of vaccines against clostridiosis is described in this study. This technique is capable of quantifying the toxoid of the bacterium Clostridium perfringens Type D, which is commonly found within these vaccines. The described method is performed in vivo to quantify the toxoid, replacing the current predominant approaches that use the titration of toxins before the inactivation process. This method is based on the partial neutralization of a determined dose of antitoxin by testing different doses of the toxoid. In order to guarantee its reliability, it is essential for the technique to be validated. Thus, the technique was tested using the following validation parameters: specificity and selectivity, detection limit, linear correlation, precision and robustness, in agreement with the requirements of regulatory agencies and international committees from around the world. The method was found to be specific, selective, robust, precise, and linear inside a specific concentration range. Therefore, it could be applied to the quality control of clostridiosis vaccines with satisfactory results.


Santos J.N.S.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Gomes R.D.S.,Federal Rural University of Rio de Janeiro | Vasconcellos R.M.,Instituto Federal Of Educacao | Silva D.D.S.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Araujo F.G.,Federal Rural University of Rio de Janeiro
Journal of the Marine Biological Association of the United Kingdom | Year: 2014

We examined the benthic macroinfauna at three strata during two seasons (winter and summer) on two sandy beaches (dissipative and reflective) in south-eastern Brazil. The hypothesis raised is that effects of morphodynamics and zonation determine the structure of macroinfauna, with dissipative beaches having comparatively higher species richness and density than the reflective beaches. Flamengo beach (dissipative) had higher species richness but lower density compared to Grumari beach (reflective). A high dissimilarity in assemblage structure (91.75%) was detected between the two beaches. Zonation in the occurrence of macroinfauna was detected for the two beaches in the two examined seasons. At Grumari beach, Emerita brasiliensis occurred mainly in stratum 1 (intertidal swept zone) while Saccocirus sp. occurred in stratum 2 (infralittoral at 0.5 m depth), whereas at Flamengo beach E. brasiliensis and Enoploides sp. had the highest density in stratum 1 (intertidal swept zone) whereas Scolelepis goodbodyi and Donax uncinata dominated in stratum 3 (infralittoral at 1.0 m depth). Scolelepis goodbodyi, Dispio uncinata, Enoploides sp., Nematoda and Trileptium sp. were associated with higher a Dean parameter and content of organic matter at Flamengo beach. In contrast, Hastula sp., Donax sp., Pisionidens indica, Hemipodus californiensis, Saccocirus sp. and Phyllodocidae were associated with the higher wave period and grain size of Grumari beach. The hypothesis that macroinfauna structure differs between the beaches and strata was confirmed, with the dissipative beaches having comparatively higher richness but lower density than the reflective beaches. Copyright © Marine Biological Association of the United Kingdom 2014.


De Souza Silva-Camacho D.,Federal Rural University of Rio de Janeiro | Gomes R.D.S.,Federal Rural University of Rio de Janeiro | Santos J.N.S.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Araujo F.G.,Federal Rural University of Rio de Janeiro
Journal of the Marine Biological Association of the United Kingdom | Year: 2016

We examined the benthic fauna in four areas along a mangrove tidal channel in south-eastern Brazil, between October 2008 and August 2009. The tested hypothesis is that the most abundant groups avoid competition as they occupy different types of substrata and that the longitudinal distance from the sea also affects the occurrence of benthic fauna along the channel. We also examined the prop root epibiont fauna to describe this different community. Polychaeta was the dominant group in the sediment whereas Isopoda and Tanaidacea were the dominant groups on the prop roots. We found a tendency for higher infauna species richness and diversity in the innermost channel area during the summer. Higher abundance of epibiont fauna was also found in summer with tidal movements allowing the colonization of the prop roots of the mangrove forest by some taxa. The polychaetes Ceratocephale sp. and Laeonereis acuta had indication of habitat partitioning, with the first occurring mainly in very fine sand sediment whereas the latter preferred medium sand sediment. The microcrustaceans Chelorchestia darwini and Tanaidacea sp. 1 occurred in high abundance colonizing the prop roots. Exosphaeroma sp. was found in high abundance in infauna and epibiont fauna. The tested hypothesis of spatial partitioning of the mangrove channel by the benthic fauna was confirmed with the most abundant species occupying the substrata with different grain fractions and prop roots in different stations. Copyright © Marine Biological Association of the United Kingdom 2016


Lima J.F.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Mendonca D.G.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Escobar S.A.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Gusmao C.A.,Instituto Federal Do Norte Of Minas Gerais Ifnmg | Teixeira G.,Instituto Federal Do Norte Of Minas Gerais Ifnmg
Advances in Intelligent Systems and Computing | Year: 2016

This paper, through a literature review analyzes the use of technology in the indigenous environment as a resource for the preservation of their culture / language. It focuses on information systems and information management as ways to ensure the storage of data on indigenous language. It also displays the results of a system in its first version - which catalogs the words of a language in text format, image and sound - in this case the indigenous words Xakriabá people. We concluded that the availability of the words in this format may support the cultural revival of a group of people. It is expected that making online vocabulary available may contribute to the preservation and transmission of language and culture for future generations. © Springer International Publishing Switzerland 2016.

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