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Ramos F.T.,PPAT UFMT | Ramos D.T.,PPAT UFMT | Maia J.C.S.,PPAT UFMT | Serafim M.E.,IFMT | And 2 more authors.
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2013

The soil compaction curve is determined by the Proctor test, normal or modified, widely used in civil engineering, however, its use has agronomic limitations, since the configuration of the curved part of the reuse of a single sample, disregarding the original soil structure. In this context, the objective of the study was to evaluate the configuration of the compaction curve based on with and without reuse of samples of an Oxissol, considering different management systems. While comparing the procedure with and without reuse of the sample, it was found that regardless of managements and layers evaluated, curves of soil compaction obtained were different. Furthermore, the procedure to reuse samples increases the density of the soil due to fragmentation of the aggregates and reorganization of its particles. Thus, for agricultural purposes, the compaction curve is suitably characterized without reuse of samples, since with this test, the aggregates of the sample, are not fully fractionated, both aggregates from soil under native vegetation or anthropized areas.

Goulart M.A.,IFMT | Vilani M.T.,UNIVAG | Junior O.B.P.,Programa de Pos Graduacao em Fisica Ambiental UFMT
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2015

The temporal-spatial variation of evapotranspiration was analysed using Morlet wavelet in a forest of Vochysia divergens Pohl (locally known as Cambarazal) in Pantanal wetland in Mato Grosso state, Brazil. This area is inserted within the physiographic plain of the Pantanal and is seasonally flooded. The net radiation, solar global radiation, air temperature, and relative humidity data were collected by sensors installed in a micrometeorological tower. The daily analysis of time series by Morlet wavelet for evapotranspiration was satisfactory enabling better understanding of the dynamics of evapotranspiration in wetland and its relation to the air temperature, relative humidity, and solar radiation. It is concluded that during the wet season the highest values of evapotranspiration and higher intensity in the high frequency occured probably due to increased availability of water as a function of rainfall and flooding, and solar radiation. © 2014, Departamento de Engenharia Agricola - UFCG/Cnpq. All rights reserved.

Martins W.K.A.G.,UFMT | Oliveira A.A.,UFMT | Da Costa A.F.N.,UFMT | Gianesini B.M.,UFMT | And 3 more authors.
Proceedings of International Conference on Harmonics and Quality of Power, ICHQP | Year: 2014

This paper aims to present a comparative analysis of a computationally implemented model of an Unified Power Flow Controller (UPFC) and an ASC (Advanced Series Compensator) through case studies. To do so, a description its principle of operation and mathematical modeling, comprehending the series and parallel compensators, is given so that the control objectives can be determined using the vector theory. © 2014 IEEE.

Ramalho L.A.,São Paulo State University | Shinoda A.A.,São Paulo State University | Do Nascimento V.E.,IFMT | De Oliveira R.,IFMT | Ferreira E.T.,IFMT
2014 IEEE PES Transmission and Distribution Conference and Exposition, PES T and D-LA 2014 - Conference Proceedings | Year: 2014

This paper describes the VHDL modeling of Smart Meters communication based on DNP3 protocol point-to-point Network using IEEE 802.15.4 interface. The modeling was validated with the simulation of three scenarios which show that the measured latency is in line with the requirements of Smart Grid Applications. So, these results indicate that the approach is indeed promising. © 2014 IEEE.

Silva L.A.,IFMT | Borges W.R.,University of Brasilia | Cunha L.S.,University of Brasilia | Branco M.G.C.,IG UFC | Farias M.M.,University of Brasilia
Geotechnical and Geophysical Site Characterization 4 - Proceedings of the 4th International Conference on Site Characterization 4, ISC-4 | Year: 2013

The Brazilian road system consists of approximately 1.7 million km of highways, 12.4% of which is paved and the remaining unpaved. Only roughly 3% of Brazilian paved roads are made of rigid pavements. The use of geophysical methods, integrated with direct methods, allows the appropriate reconstitution of the subsoil profile and embedded objects, thus providing a fast, efficient and cost effective investigation tool. This paper presents the results of a surveillance using GPR to evaluate the thickness of the pavement layers and the presence and correct placement of metal bars in the concrete slabs of BR 101 highway, in the state of Pernambuco, Brazil. Shielded antennas with frequencies of 250, 700 and 900 MHz were used, thus allowing the accurate definition of the thickness of the Portland cement slabs and the base layer. The method also allowed the verification of presence and placement of these bars in the concrete slabs. © 2013 Taylor & Francis Group.

De Souza Santana C.,IFMT | Santos J.,IFMT
65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010 | Year: 2010

The aim of this research is the use of the reject of red ceramic from an industry of bricks and tiles from the region of Cuiaba as mortar for repair of structural pathology, looking for their application to replace the sand and gravel in the process. The mortar produced restores a park bench made of concrete which seat was made of red ceramic and legs of soil-cement bricks. The reject of red ceramic used is from an industry in the region of Cuiaba, discarded at the end of the production process, ground in an appropriate granulometry to simulate a generic type of sand and gravel. Grinding processes were developed and various granulometric curves were drawned. The aggregates produced were characterized from the deposit until the final grinding according to ABNT norms in force, the specific area by BET, was used for microanalysis X-ray diffraction. ABNT standards were used to characterize and compare the results. The mortar produced proved to be adequate for the proposal restoration, it was consistent and cohesive. It was concluded that the mortar produced with recycled aggregate of red ceramic can be used in structural restoration in civil construction to replace the natural aggregate, with cost and environmental benefits.

Brasil A.S.,Ciencia e Tecnologia de Alimentos IFMT | Sigarini K.S.,Ciencia e Tecnologia de Alimentos IFMT | Pardinho F.C.,IFMT | de Faria R.A.P.G.,Ciencia e Tecnologia de Alimentos | Siqueira N.F.M.P.,Ciencia e Tecnologia de Alimentos
Revista Brasileira de Fruticultura | Year: 2016

The present study had the objective to evaluate the physicochemical quality of frozen fruit pulp marketed in the city of Cuiabá, comparing with the standard established by law. The experiment was conducted in a completely randomized design, with five treatments (called brand A, B, C, D and E) and three replicates for the pulps of pineapple, acerola, cashew, guava and passion fruit. The parameters analyzed were pH, titratable acidity as citric acid, total soluble solids, ratio, vitamin C and reducing sugar. Loss of vitamin C after 90 days of storage under freezing in pulps of acerola and cashew was also quantified. The data were subjected to analysis of variance and means were compared by Tukey test at 5% probability. Among the analyzed parameters, the D brand presented non-compliance with the legislation for all analyzed pulps. The content of vitamin C was inadequate and in general the pulps evaluated showed values below of the specifications required by the Standards of Identity and Quality (SIQ). All samples has reduced the vitamin C content during storage under freezing and no brand of acerola pulp and only one of cashew presented vitamin C content in accordance with the SIQ at the end of 90 days. As a conclusion there is a need for increasing inspection on processed frozen fruit pulps to ensure no harms to the consumer. © 2016, Sociedade Brasileira de Fruticultura. All rights reserved.

Faria P.B.,Federal University of Lavras | Bressan M.C.,Instituto Nacional Of Investigacao Agraria | de Souza X.R.,IFMT | Rossato L.V.,Federal University of Lavras | And 2 more authors.
Revista Brasileira de Ciencia Avicola | Year: 2010

An experiment was carried out to evaluate carcass traits of male and female broilers of two genetic strains (Paraíso Pedrês and Pescoço Pelado), slaughtered at 65, 75, 85 and 95 days of age, and reared under a semi-extensive production system. The following parameters were evaluated: body weight at slaughter (BWs), carcass weight (CW), carcass yield (CY), parts yield, including breast, drumstick, thighs, back, neck, feet, wings, abdominal fat pad (AF), and giblets (gizzard, heart, liver). Paraíso Pedrês males presented higher BWs and CW. Paraíso Pedrês females had higher breast yield. Thighs and drumstick yields were higher in Pescoço Pelado males. Back yield was similar at 85 and 95 days of age, wing yield declined with age. AF yield was higher in Paraíso Pedrês and in females. GY was affected by sex and slaughter age. The results of this work lead to the conclusion that Paraíso Pedrês males reach higher live and carcass weights at 85 and 95 days of age, and that breast yield is higher in this strain. On the other hand, Pescoço Pelado males present higher drumstick and thighs yields. Therefore, the choice of genetic strain, sex and slaughter weight will determine carcasses with different parts yield.

Faria P.B.,IFMT | Vieira J.O.,Total Alimentos | Silva J.N.,IFMT | Rodrigues A.Q.,IFMT | And 3 more authors.
Revista Brasileira de Ciencia Avicola | Year: 2011

The present study was carried out to evaluate the effects of alternative feedstuffs as partial substitutes of corn and soybean in free-range broiler diets on performance, carcass yield and technical-economic viability. A total of 400 Pescoço Pelado broilers were distributed in a completely randomized experimental design (CRD), with four treatments (treatment 1:Control; treatment 2: 10% rice bran inclusion; treatment 3: 10% ground cassava leaves; and treatment 4: 10% ground lead tree hay) with four replicates per treatment. Each replicate consisted of a group of 25 birds per paddock, separated per sex. Initial weight (IW), final weight (FW), body weight (BW), daily weight gain (DWG), feed intake (FI) and feed conversion ratio (FCR) were evaluated. Carcass, cuts (breast, thigh, drumstick, back, neck, leg and wings), abdominal fat and giblets (gizzard, heart and liver) yields were determined. The technical-economic viability of each treatment was assessed by determining the cost of feed per kg body weight, economic efficiency index and cost. The highest final weights were obtained with the use of rice bran. Rice bran and cassava leaves promoted higher carcass yield, as well as lower back and abdominal fat yields. The use of cassava leaves showed better economic efficiency among the treatments with alternative feedstuffs. The use of alternative feedstuffs at 10% inclusion in substitution of corn and soybean meal did not not result in major changes in performance and carcass parameters, and economic efficiency, and therefore, their use is recommended when the availability or the price of key ingredients, such as soybean meal and corn, increase.

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