7 documents found, page 1 of 1
Using mathematical methods for designing optimal mixtures for building bricks p...
Machado, Raiane Ribeiro; Wolff, Eliane; Schwabe, Wilfrid Keller; Conceição, Samuel Vieira; Santanna-Greco, Jisela Aparecida; Greco, MarceloThis study evaluates the use of solid industrial waste generated by a water treatment plant (WTP) at a pulp mill in Brazil for manufacturing building bricks. The sludge from the WTP was mixed with three different wastes generated by the same factory (dregs, grits, and lime mud) and other wastes generated from crushing and grinding granite rock (granite fines). Mathematical and statistical methods are proposed f...
Avaliação de diferentes combinações de tempo de revolvimento, em secador de cam...
Greco, MarceloMade available in DSpace on 2017-07-10T17:37:08Z (GMT). No. of bitstreams: 1 Marcelo Greco.pdf: 571347 bytes, checksum: bbd60db2952ca5a0dde8ac3055608852 (MD5) Previous issue date: 2006-09-27; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; This assignment aimed to value the energetic efficiency on coffee drying (Coffea Arabica, L.), with different combinations of time revolvment on a fix layer drye...
Topology optimization applied to 2D elasticity problems considering the geometr...
Fernandes, Walliston dos Santos; Almeida, Valério da Silva; Neves, Francisco de Assis das; Greco, MarceloTopological Optimization (TO) of structures in plane stress state with material elastic-linear behavior, buttaking into consideration the geometrical nonlinearities, was performed and the results are presented herein. For this process, an evolutionary heuristic formulation denominated SESO (Smoothing Evolutionary Structural Optimization) associated with a finite element method was applied. SESO is a variant of ...
Development of an engineering educational software applied for the blending of ...
Pimenta, Frederico Torres; Greco, Marcelo; Pitangueira, Roque Luiz; Santanna-Greco, Jisela AparecidaThe paper deals with the development of a software for the mix design of granular materials based on the method of least squares. The software, developed in Java, has the possibility of using a weighted cost function in the mixtures, the specificity for the application, and the gratuity. The problem to be solved is the determination of the proportions of each component to be used in the material mixture, so tha...
Evaluation of different revolving time in a fixed bed-coffee drier - doi: 10.40...
Greco, Marcelo; Campos, Alessandro Torres; Klosowski, Elcio SilvérioThis study aimed to evaluate the energetic efficiency in coffee drying (Coffee Arabica L.) with different combinations of revolving time in a fixed-bed coffee dryer. The experiment was conducted in July 2004 in Jesuítas – Paraná state/Brazil. The dryer featured a mechanic system with rotating blades to revolve of the product at different intervals. The drying air temperature was 75°C ± 5°C. The v...
Thermal losses in coffee dryer - DOI: 10.4025/actasciagron.v32i2.3676
Greco, Marcelo; Campos, Alessandro Torres; Klosowski, Elcio SilvérioThis study aimed to evaluate the temperature reduction in the external parts of a fixed-bed coffee dryer, by means of different combinations of revolving times, using a noncontact thermometer. The experiment was developed in the month of June 2004 at a farm located in Jesuítas, Paraná State, Brazil. Coffee (Coffea arábica L.) variety IAPAR 59 was used. The dryer used was of the fixed-bed model, with metallic dr...
Assessment of modeling approaches for estimates of reference evapotranspiration...
Syperreck, Vera Lucia Greco; Klosowski, Elcio Silvério; Greco, Marcelo; Furlanetto, CleberThe aim of this study was to compare the efficiency of three estimate methods for reference evapotranspiration in comparison with the FAO Penman-Monteith equation. Meteorological data used in this study were collected from the IAPAR meteorological station, located in Palotina, Paraná State, Brazil. In order to estimate the reference evapotranspiration, data available from 1994 to 2003 were used. The performance...