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| Registros recuperados: 21 | |
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| Menezes,Patricia C. de; Silva,Rouverson P. da; Carneiro,Franciele M.; Girio,Lucas A. da S.; Oliveira,Mailson F. de; Voltarelli,Murilo A.. |
| ABSTRACT Assuring the quality of mechanical soybean harvesting is crucial to ensure that investment in other stages of crop production is converted into profit for the farmer. Because the quality of this operation is related to decreased losses, which may be affected by the combine header used and by the harvesting speed, the aim of the present study was to assess the quality of mechanical soybean harvesting in the Southern Cone of Rondônia, using harvesters with different combine headers and travel speeds via statistical process control. The experiment was performed during the 2015/16 harvest in an agricultural area of the municipality of Cabixi, RO, located at the geographical coordinates 13° 27’ S and 60° 41’ W. The study was designed based on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Statistical process control; Harvester; Glycine max; Losses; Combine header. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001000732 |
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| Araujo,Guilherme de M.; Teixeira,Marcos A.; Voltarelli,Murilo A.; Orlando Junior,Wilson de A.; Tavares,Leticia C. M.. |
| ABSTRACT Studies conducted by the international labor organization have shown that operations involving agricultural machinery are among the three activities with the highest risk of accidents to workers. Among the possible causes, rollover is the most common, accounting for 33% of fatal accidents. Despite this, there are standards that provide for the use of safety devices to ensure the physical integrity of the operator, among these equipment stand out rollover protection structures, which can be foldable or not. In this sense, the objective of this study was to perform an ergonomic study in order to analyze the torque required for lowering and lifting a foldable rollover protection structure attached to an agricultural tractor, developing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tractor accidents; Tractor rollover; Torsion coil springs; Agricultural tractors. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000500680 |
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| Tavares,Tiago de O.; Damasceno,André F.; Voltarelli,Murilo A.; Silva,Rouverson P. da; Furlani,Carlos E. A.. |
| ABSTRACT: The mechanized gathering process of sweeping coffee is extremely important to reduce the losses of fruit not used in the harvesting operation. But this operation usually has a low operational performance and a high cost per unit collected in this way any measures that can effectively reduce costs increase the viability of the operation. In this sense, studies on adequacy tractor mass for each operation show improvement in energy use, reducing fuel consumption. So, this study aimed to quantify the fuel consumption and effective power along the process of a tractor 4x2 FWD pulling the coffee harvester. I was used as treatments three ballasting settings, these being equivalent the relations power to weight of 36, 39 and 42 kg hp-1 working with and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dynamic mass equilibrium; Power-weight ratio; Front wheel assist. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400699 |
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| Estevam,Francisca N. de L.; Queiroz,Renata F. de; Damasceno,André F.; Silva,Rouverson P. da; Voltarelli,Murilo A.; Barbosa Filho,José A. D.. |
| ABSTRACT Work in the field is characterized as unstructured because it is performed in inconvenient postures, without a fixed workstation, exposing the worker directly to the sun and other inclement weather. This may interfere in the health and the performance of the activity. The objective of this work was to characterize the environment of the agricultural microtractor operator, evaluating the thermal comfort during the activity in the municipality of Quixadá, CE. A model TC14 Super Yanmar Agritech microtractor, coupled to a rotary spindle, was used. For the measurements of the environmental variables, sensors and devices were installed on the operator and in the microtractor. The experimental design adopted the assumptions of statistical quality... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Operator health; Thermal load; Ergonomics. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000200208 |
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| Voltarelli,Murilo A.; Paixão,Carla S. S.; Zerbato,Cristiano; Silva,Rouverson P. da; Gazzola,Jonathan. |
| ABSTRACT The quality control is used for the evaluation of processes and products, and it is important to detect and reduce variability and in operations management can be applied in mechanized harvesting of sugarcane billets. In this sense, this study aimed to identify critical quality indicators and, if necessary, to develop a continuous improvement plan for harvest of sugarcane billets. For the survey and definition of critical quality indicators the FMEA (Failure Mode and Effect Analysis) was applied, after the formation of the quality technical team. Evaluations of the collected variables were through control charts of individual values and the process capability indexes. There are 8 critical quality indicators in the billets harvesting process; the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality control; Flowchart; Agricultural mechanization; PDCA; Harvester. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000100088 |
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| Paixão,Carla S. S.; Voltarelli,Murilo A.; Silva,Rouverson P. Da; Tavares,Tiago De O.; Gírio,Lucas A. Da S.. |
| ABSTRACT: The intensive mechanization during the harvest operation and success of this operation depends on several factors, one of which is the length and format of the plots. The aim of this study was to evaluate the operating performance of a soybean harvester in different geometric plots shape, using as quality indicators performance parameters by means of statistical control tools of process. The experiment was conducted in March 2014 in the city of Uberaba - MG. Operational capacity was evaluated in the mechanical harvesting of soybeans in three plots: irregular, rectangular and trapezoidal. Performance evaluations of soybean harvester were made from the following parameters: displacement speed, engine rotation, cylinder rotation and concave opening.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Control charts; Grain harvester; Quality control; Glycine max (L.) Merrill. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000500961 |
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| Loureiro Júnior,Antônio M.; Silva,Rouverson P. da; Cassia,Marcelo T.; Compagnon,Ariel M.; Voltarelli,Murilo A.. |
| The mechanical harvesting is an important stage in the production process of soybeans and, in this process; the loss of a significant number of grains is common. Despite the existence of mechanisms to monitor these losses, it is still essential to use sampling methods to quantify them. Assuming that the size of the sample area affects the reliability and variability between samples in quantifying losses, this paper aimed to analyze the variability and feasibility of using different sizes of sample area (1, 2 and 3 m²) in quantifying losses in the mechanical harvesting of soybeans. Were sampled 36 sites and the cutting losses, losses by other mechanisms of the combine and total losses were evaluated, as well as the water content in seeds, straw distribution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Statistical Control Process; Control Charts; Combine. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100009 |
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| Cassia,Marcelo T.; Voltarelli,Murilo A.; Silva,Rouverson P. da; Zerbato,Cristiano; Lima,Pedro H. de. |
| RESUMO A operação de colheita mecanizada de sementes demanda que as regulagens das colhedoras sejam dinâmicas, fato que afeta diretamente a qualidade da operação e dos grãos colhidos. Desta forma, o objetivo do presente trabalho foi monitorar, em intervalos regulares de tempo, a qualidade da operação de colheita de sementes de soja realizada simultaneamente por duas colhedoras de grãos, com emprego do controle estatístico de qualidade (CEQ). O trabalho foi realizado em um campo de produção de sementes na região de Catalão, GO, onde foram monitorados o desempenho operacional das colhedoras, as perdas quantitativas na colheita e as perdas qualitativas das sementes. Observou-se que as colhedoras monitoradas operaram em condições semelhantes porém as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Colhedora de grãos; Perdas na colheita; Controle estatístico de qualidade (CEQ). |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001201209 |
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| Voltarelli,Murilo A.; Silva,Rouverson P. da; Zerbato,Cristiano; Paixão,Carla S. S.; Tavares,Tiago de O.. |
| ABSTRACT Statistical process control in mechanized farming is a new way to assess operation quality. In this sense, we aimed to compare three statistical process control tools applied to losses in sugarcane mechanical harvesting to determine the best control chart template for this quality indicator. Losses were daily monitored in farms located within Triângulo Mineiro region, in Minas Gerais state, Brazil. They were carried over a period of 70 days in the 2014 harvest. At the end of the evaluation period, 194 samples were collected in total for each type of loss. The control charts used were individual values chart, moving average and exponentially weighted moving average. The quality indicators assessed during sugarcane harvest were the following loss... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality; Agricultural mechanization; Moving average; EWMA. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000601079 |
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| Paixão,Carla S. S.; Alcântara,Aline S.; Voltarelli,Murilo A.; Silva,Rouverson P. da; Tavares,Tiago de O.. |
| ABSTRACT: Information on harvester performance is important in the management and optimization of mechanized agricultural systems. In this sense, the aim of this study was to monitor the operation quality of soybean mechanical harvesting in different plot shapes by means of statistical process control. The harvest was carried out in an agricultural area of a farm located in Uberaba, MG, Brazil, with an experimental design based on the assumptions of statistical quality control and 18, 28, and 24 replications for irregular, rectangular, and trapezoidal plots, respectively. The variables and/or quality indicators of harvester performance were forward speed, engine speed, cylinder speed, and concave opening. The lowest variation occurred in the irregular plot... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain harvester; Harvester machine performance; Statistical quality control; Glycine max (L.) Merrill. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400689 |
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| Paixão,Carla S. S.; Chrispin,Camila P.; Silva,Rouverson P. da; Girio,Lucas A. S.; Voltarelli,Murilo A.. |
| ABSTRACT The mechanized harvesting of soybean is a fundamental tool in the production process of this crop and, if not performed properly, it can result in severe mechanical damage to the seeds, causing significant losses at harvest, particularly due to reduced quality. Thus, this study aimed to evaluate the physical and physiological quality of soybean seeds at three speeds of the harvester, using statistical process control. The experiment was carried out in the municipality of Conceição das Alagoas, MG, Brazil, with three travel speeds: 4.5, 5.0 and 5.5 km h-1. The seed samples were collected at 20 min intervals for 3 h of operation, with a total of 9 samples for each speed. The evaluations were performed based on the following parameters: grain... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max (L.) Merrill; Mechanical damage; Vigor; Control charts. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300214 |
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| Voltarelli,Murilo A.; Silva,Rouverson P. da; Cassia,Marcelo T.; Ortiz,Danilo F.; Torres,Luma S.. |
| A colheita mecanizada de cana-de-açúcar é uma tendência crescente e irreversível ao setor canavieiro, devido à sua maior operacionalidade durante os turnos diurno e noturno, em razão das leis ambientais e trabalhistas ligadas a esta operação. Entretanto, o grande desafio deste sistema é a melhoria do mecanismo de corte de base, uma vez que esse mecanismo é capaz de causar elevados índices de danos e abalos nas soqueiras quando associado ao desgaste das facas do mecanismo de corte basal. Diante do exposto, objetivou-se, neste trabalho, avaliar a qualidade do corte basal por meio dos índices de danos e abalos causados às soqueiras, bem como o desgaste de três modelos de facas do mecanismo de corte basal de cana-de-açúcar, em função do tempo de uso. O... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Danos às soqueiras; Controle estatístico de processo; Colheita mecanizada. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000300528 |
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| Alcântara,Aline S.; Prado,Jéssica P. do; Corrêa,Rafael de G.; Silva,Rouverson P. da; Voltarelli,Murilo A.; Vieira,Roberval D.. |
| ABSTRACT The success of soybean cultivation depends on several factors, one which is the use of high-quality seeds, which can guarantee growth of the desired plant population. The objective of this study was to monitor possible failures during the seed production process, and to determine the association between germination and tetrazolium tests through tools of Statistical Process Control (CEP). The experimental design was based on premises of the CEP, using percentage of germination, seed viability, mechanical damage, bed bug, and moisture as indicators of quality. It is possible to detect flaws in the soybean production process through control charts, as well as through germination and tetrazolium tests; results indicated that germination failures are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max L.; Control charts; Quality indicators; Seed viability. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001000689 |
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| Zerbato,Cristiano; Furlani,Carlos E. A.; Oliveira,Mailson F. de; Voltarelli,Murilo A.; Tavares,Tiago de O.; Carneiro,Franciele M.. |
| ABSTRACT Over the past decade, automatic guidance of agricultural machinery via Global Navigation Satellite System (GNSS) signals has been increasingly adopted by the farming community. Peanut farmers are adopting such technology in order to improve the parallelism of operations to address difficulties that occur in mechanical digging, where losses are a big problem. This study aimed to evaluate mechanized operations of peanut sowing and digging controlled manually and by autopilot, along with their quality. The treatments consisted of two digging operations, with and without autopilot, and two displacement speeds (4.5 and 6.0 km h-1). The experiment was conducted in a medium-textured soil in a completely randomized design arranged in bands, using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arachis hypogaea L.; Statistical process control; Kinematic relative positioning; Parallelism; Digging losses. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000800630 |
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| Zerbato,Cristiano; Furlani,Carlos E. A.; Almeida,Rodrigo F; Voltarelli,Murilo A.; Silva,Vicente F. A.. |
| ABSTRACT Peanut crop (Arachis hypogaea L.) mechanization has been improved over the years; however there are drawbacks that affect the quality of operations. Thus, this article’s objectives were to evaluate the operational performance of the mechanized sowing of peanut crop according to seeding densities (10, 14, and 18 seeds m-1) and seed sizes (21 and 23 mm). It was observed that the seeds of 23 mm had shorter average number of days to emergence and a higher percentage of emergences, occurring the opposite to the seeding density of 18 seeds m-1. The higher the seeding density, the largest was the plant stand, whereas the 23 mm seed obtained the best results and the same with the seeding density of 14 seeds m-1 that had a higher percentage of normal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arachis hypogaea L.; Agricultural mechanization; Seeder-fertilizer. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000400711 |
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| Zerbato,Cristiano; Furlani,Carlos E. A.; Silva,Rouverson P. da; Voltarelli,Murilo A.; Santos,Adão F. Dos. |
| ABSTRACT The digging of peanut, which has the pod production in the subsurface, is directly affected by soil conditions, physical or environmental characteristics, at the time of operation and may be the cause of unwanted losses. Therefore, the quality of the operation is very important for minimizing these losses. Thus, this study aimed to evaluate the quality of mechanized digging operation of peanut according to three soil textural classes (Sandy, Medium and Loamy) and their water content conditions at operation through statistical process control. The experiment was conducted at three locations in the state of São Paulo, Brazil, under sampling scheme arranged in tracks and 40 sampling points for each textural class of soil, using the mechanical digging... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arachis hypogaea L; Losses; Quality; Soil water content; Water content of the pods. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200315 |
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| Paixão,Carla S. S.; Voltarelli,Murilo A.; Silva,Rouverson P. da; Borba,Mateus A. de P.; Torres,Luma S.. |
| ABSTRACT The mechanized sugarcane harvesting process is considered one of the major economic bottlenecks, with low operational efficiency and, mainly, high losses of stalks left in the field. In order to minimize these problems and assist in the improvement of processes, this study aimed to evaluate the losses in the mechanized sugarcane harvesting using statistical process control. The experimental design was completely randomized, based on the methodology of statistical process control with samples collected on five work fronts during the daytime and nighttime operation. The experiment was carried out in an agricultural area of a sugarcane mill in the municipality of Ribeirão Preto, SP, Brazil, on five sugarcane harvest fronts. Losses were measured using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvester; Visible losses; Saccharum spp. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000400473 |
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| Paixão,Carla S. S.; Voltarelli,Murilo A.; Santos,Adão F. dos; Silva,Rouverson P. da. |
| ABSTRACT Sugarcane mechanized harvesting can lead to serious risks to the longevity of plantations when improperly operated, and may cause damages and disturbances in the remaining ratoons in the field. In this sense, this study aimed to evaluate the damage and disturbance to the sugarcane ratoons by the base cutting quality of two-blade models through statistical process control. The experiment was carried out during the 2015/16 growing season in an agricultural area of the Moreno Mill, located in Cravinhos, São Paulo, Brazil. The sugarcane harvester models A8800 (Machine 1) and BE1035 (Machine 2). The sugarcane variety cultivated in both treatments was SP80-1816. Thirty points were sampled per harvester, with 10-minute intervals between them. Equations... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cutting height; Control charts; Mechanized harvesting; Damages and disturbances; Saccharum spp. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000100056 |
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| Paixão,Carla S. S.; Santos,Adão F. dos; Voltarelli,Murilo A.; Silva,Rouverson P. da; Carneiro,Franciele M.. |
| ABSTRACT The knowledge of the operational quality of soybean harvester provides useful information to management in order to obtain the maximum performance of all available resources, with minimal expenses. The aimed of this study was to evaluate the quality of mechanized soybean harvesting operation in different formats of plots through statistical process control. Treatments were established from the formats of existing plots in the area (irregular, trapezoidal and rectangular). The activities carried out during the harvest were monitored (harvesting, unloading, handling, maneuvering and climate charts) and through these activities were made the calculation of capacity and harvesting operation efficiencies. In the determination of total losses were used... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain harvester; CUSUM; Machine performance; Glycine max (L.) Merrill. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000100106 |
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| Registros recuperados: 21 | |
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