IF Goiano

Rio Verde de Mato Grosso, Brazil

IF Goiano

Rio Verde de Mato Grosso, Brazil
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The adoption of agile methods is difficult. No rework metrics, changing scope and requirements are the main difficulties in adopting these. In this sense, the Trace++ approach aims to facilitate the adoption of agile methods by teams that work with traditional methods. However, to obtain use-scale, this paper proposes a tool to facilitate the requirements traceability processes, in order to scale the adoption of this technique. The tool developed in this study has integration with GIT version control tools and Redmine project management, being able to obtain artifacts from these and to associate with projects, sprints, requirements or user stories, through user defined tracing codes. © 2017 AISTI.

Ullmann R.,IF Goiano | Resende O.,IF Goiano | Oliveira D.E.C.,IF Goiano | Costa L.M.,IF Goiano | Chaves T.H.,IF Goiano
Engenharia Agricola | Year: 2016

This study focused in determining the sorption isotherms of sweet sorghum seeds at varied conditions of temperature and water activity, ascertaining the isosteric heat of desorption. Seeds were dried in a forced-air oven at 40 °C up to reach moisture levels of 24, 19, 15, 12 and 8% (d.b.). Desorption isotherms of sorghum seeds were estimated by the indirect static method, and water activity (aw) was determined using a Hygropalm aw model 1 device. Temperature control was set at 10, 20, 30, and 40 °C in the B.O.D chambers. Experimental data were fitted using mathematical models regularly used to represent hygroscopicity of plant products. Results showed Chung-Pfost model as the one that best represents sorghum seed hygroscopicity. The isosteric heat of sorption increases with decreasing moisture contents; and the values for sorghum seeds with moisture content between 7.9 to 28.0% (d.b.) range from 3136.54 up to 2493.33 kJ.kg-1.

Correa P.C.,Federal University of Viçosa | Resende O.,IF Goiano | Garin S.A.,Public University of Navarra | Jaren C.,Public University of Navarra | De Oliveira G.H.H.,Instituto Federal Of Brasilia
Engenharia Agricola | Year: 2011

The present study aimed to determine the volumetric shrinkage rate of bean (Phaseolus vulgaris L.) seeds during air-drying under different conditions of air, temperature and relative humidity, and to adjust several mathematical models to the empiric values observed, and select the one that best represents the phenomenon. Six mathematical models were adjusted to the experimental values to represent the phenomenon. It was determined the degree of adjustment of each model from the value of the coefficient of determination, the behavior of the distribution of the residuals, and the magnitude of the average relative and estimated errors. The rate of volumetric shrinkage that occurred in bean seeds during drying is between 25 and 37%. It basically depends on the final moisture content, regardless of the air conditions during drying. The Modified Bala & Woods' model best represented the process.

Resende O.,IF Goiano | Ullmann R.,IF Goiano | Siqueira V.C.,Federal University of Lavras | Chaves T.H.,IF Goiano | Ferreira L.U.,IF Goiano
Engenharia Agricola | Year: 2011

The aim of this study was to adjust different mathematical models to experimental data for jatropha seed drying (Jatropha curcas L.) and determine the effective diffusion coefficient and obtain the activation energy forthe temperature range used. Jatropha seeds harvested with moisture content of 0.67 (decimal d.b.) and dried in anatural environment to reduce and homogenize the moisture content for 0.30 (decimal d.b.). Jatropha drying was performed in experimental drier maintained at controlled temperatures of 30; 40; 50; 60 or 70 ± 1 °C and relativehumidity of 55.98; 41.44; 35.35; 26.21 and 13.37 ± 3%, respectively. Experimental data were fitted to eleven mathematical models used to represent the process of drying of agricultural products. It was concluded that among the models tested, Page and Henderson and Modified Pabis presented the best fitting to experimental data, and thePage model selected for describing the drying curves from jatropha because of their simplicity; the effective diffusion coefficient increases with increasing temperature, with magnitudes between 3.93×10-10 and 9.19×10-10 m2 s-1 for the temperature range 30-70 °C, respectively. The activation energy for liquid diffusion during jatrophadrying was 15.781 kJ mol-1.

Epifanio P.S.,Ciencias Agrarias Do Instituto Federal Goiano | De Pinho Costa K.A.,IF Goiano | Da Costa Severiano E.,IF Goiano | Cruvinel W.S.,Ciencias Agrarias Do Instituto Federal Goiano | And 2 more authors.
Semina:Ciencias Agrarias | Year: 2014

The goal of this study was to evaluate the fermentative and bromatological characteristics of Piata palisadegrass (Brachiaria brizantha cv. Piata) ensiled with levels of meals from biodiesel industry. The experiment was performed at the Federal Institute of Goias State, Campus Rio Verde. The experiment was a completely randomized design with four replications, in 4 × 4 factorial arrangement, being four meals (cotton, sunflower, soybean, and canola) and four levels of inclusion (0, 5, 10 and 15%). The results showed the oleaginous meals from biodiesel industry are indicated as additives for ensiling Piata palisadegrass, by improving the qualitative, nutritional and fermentative characteristics of the Piata palisadegrass silage. It is recommended the addition of 15% of the meals, since this level provides the best quality of silage. The soybean meal is the most effective to improve the silage quality, in comparison with the other additives.

Siqueira V.C.,Federal University of Lavras | Resende O.,IF Goiano | Chaves T.H.,IF Goiano | Soares F.A.L.,IF Goiano
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2012

Due to the need for substitution of fuel oil, the importance of Jatropha for biodiesel and the need for construction and improvements of the equipment used during harvest and postharvest of this crop, this research aimed to determine the shape and the size of Jatropha fruit during drying under five ambient conditions. The fruits harvested manually with moisture content of 4.40 kg kg -1 dry matter were dried in an oven with forced air ventilation in five temperature conditions: 45, 60, 75, 90 and 105 °C and relative humidities of 14.5, 7.4, 3.8, 2.2 and 1.4% respectively, until moisture content of 0.10 ± 0.007 (kg kg -1 dry matter). The roundness, sphericity, volume, surface area, projected area and surface-volume ratio were determined during drying. It is concluded that the reduction of the moisture content and the drying conditions alter the shape and reduce the size of the fruit of Jatropha, being possible to adjust a single equation to the experimental data of volume and surface area of the fruit of Jatropha during drying at different temperatures.

Cabral J.S.R.,Soil and Agricultural Engineering | Alberto P.S.,IF Goiano | Pereira F.D.,IF Goiano | Souchie E.L.,Soil and Agricultural Engineering | Silva F.G.,Soil and Agricultural Engineering
Plant Tissue Culture and Biotechnology | Year: 2013

The effect of constitution of the culture medium, different concentrations of sucrose, and different growth conditions on the germination of seeds and growth of explants of ″mangaba″ (Hancornia speciosa Gomes) were evaluated in two in vitro assays. In assay one, the physical constitution of a medium (solid and liquid) and different concentrations of sucrose (0, 15, 30, 45, 60, 75, and 90 g/l) were tested, and seed germination was found to be variable. In assay two evaluation of the effect of different growth conditions (with and without agitation) on the in vitro growth of explants. Present results showed that ″mangaba″ had the highest percentage of germination and potentiality when inoculated in a liquid medium with (15 g/l) or without sucrose. The medium without agitation resulted in a better growth of explants the average length number of buds.

de Oliveira M.C.,University of Rio Verde | da Silva D.M.,University of Rio Verde | Loch F.C.,University of Rio Verde | Martins P.C.,IF Goiano | And 2 more authors.
Revista Brasileira de Ciencia Avicola | Year: 2013

This study was carried out to evaluate the effect of bee pollen (BP) levels on the IgG and IgM titers, weight of lymphoid organs, and on the tibia morphometric measures and mineralization in broilers at 21 and 42 days of age. Four hundred birds were used in an entirely randomized design with four treatments (0, 0.5, 1 and 1.5% of BP feed inclusion) and five replicates. At 21 and 42 days of rearing, blood samples were collected for IgG and IgM analysis, as well as lymphoid organs (bursa, thymus and spleen) and the tibiae. There was no effect (p>0.05) of the BP inclusion on IgG titers, bursa and spleen weights, tibia morphometric measures and mineralization at 21 and 42 days, IgM titer at 42 days or thymus weight at 21 days. However, IgM titers at 21 days and the thymus weight at 42 days linearly increased with BP dietary inclusion. It was concluded that up to 1.5% BP can be included in broiler feeds until 21 days of age to enhance bird immunity.

Sousa A.E.C.,Federal University of Campina Grande | de Lacerda C.F.,Federal University of Ceará | Gheyi H.R.,Nucleo de Engineering de Agua e Solo | Soares F.A.L.,IF Goiano | Uyeda C.A.,IF Paraiba
Revista Caatinga | Year: 2012

Aiming to evaluate gas exchange and concentration of macro and micronutrients in leaves of physic nut grown under saline conditions, an experiment was conducted in protected ambient adopting a randomized block design in factorial scheme combining five levels of irrigation water salinity ECw (0.6; 1.2; 1.8; 2.4 and 3.0 dS m-1) and two levels of phosphorus (135 and 200 g plant-1) and with four replications. Each plant was grown in pots with a capacity of 200 L. The gas exchange rates (leaf temperature, transpiration, stomatal conductance and photosynthesis) were obtained using a portable photosynthesis meter (IRGA), in the fourth expanded leaf from the apex of the plant. To determine the nutrient content of the plant, the limbo located between the fourth and fifth leaf below the inflorescence was used. The determination of nutrients followed the methodology described by Silva (1999). It was found that the salinity level of irrigation water affected the variables of gas exchange and accumulation of the minerals which has following sequence: K > N > Ca > Cl > Na > Mg > P > S > Fe > Mn > Zn > Cu. With the exception of copper all evaluated nutrients and increased with increasing salinity of irrigation water. The lowest dose of P2O5 used was sufficient to allow the development of the plant during the experimental period, there was no effect of its increase in photosynthetic parameters evaluated.

The population growth not only demands further exploration and use of water, but generates different types of wastewater, such as sewage which is dumped directly into watercourses. In this context, the aim of this study was to evaluate the influence of the use of wastewater from domestic sources on the growth of plants of physic nut during the third year of production under protected ambient. A randomized block design in a 5 × 2 factorial scheme was used, the factors being five levels of water replacement - WR (0.25, 0.50, 0.75, 1.00 and 1.25 times water consumed by the plant) and two levels of phosphorus (135 and 200 g plant-1 year-1) with four replications. Plants were grown in recipients with a capacity of 200 L and in the beginning of the 3rd year of production (present study) a drastic pruning was performed. The variables plant height, stem diameter; leaf number and leaf area of the physic nut were influenced by the depth of water replacement from 30 days after pruning (DAP). The leaf number and stem diameter were affected by phosphorus dose at 30 and 90 DAP, respectively. The plant height and leaf area were influenced by the interaction (WR × phosphorus dose) at 30, 60 and 90 DAP. The weight of the fruit and water use efficiency of physic nut were affected by the depth of water applied but were not influenced by phosphorus dose.

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