The Experts below are selected from a list of 18738 Experts worldwide ranked by ideXlab platform
Shoubin Fan - One of the best experts on this subject based on the ideXlab platform.
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emission factors and emission inventory of Agricultural machinery in beijing under real world operation
Huan jing ke xue= Huanjing kexue, 2020Co-Authors: Kai Wang, Shoubin FanAbstract:This study aimed to establish the emission factors and the emission inventory of Agricultural machinery in Beijing in 2017 under real-world operation. The emissions of typical harvesters, Tractors, Agricultural transport vehicles, and farm construction machinery under real-world operation were tested by a portable emission measurement system. The results showed that different operation modes have a greater impact on the tailpipe emissions of Agricultural machinery. The CO, NOx, HC, and PM emissions were relatively stable when the engine is idling and moving compared to when the excavator is performing actual work. According to the classification and emission standards of various types of machinery, a relatively perfect emission factor system of Agricultural machinery in Beijing was established, which can provide reference and support for relevant research and management decisions. According to the emission factors of Agricultural machinery and fuel consumption in Beijing, the emissions of CO, NOx, HC, and PM in 2017 were 2566.60, 1239.29, 563.08, and 538.32 t, respectively. The total pollutants of transport machinery, Tractors, and combined harvester accounted for 98%, 95%, 95%, and 98% of the total concentrations of CO, NOx, HC, and PM, respectively. Therefore, transport machinery, tractor, and combined harvester should be the key control objects in the reduction of Agricultural machinery pollution.
Kai Wang - One of the best experts on this subject based on the ideXlab platform.
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emission factors and emission inventory of Agricultural machinery in beijing under real world operation
Huan jing ke xue= Huanjing kexue, 2020Co-Authors: Kai Wang, Shoubin FanAbstract:This study aimed to establish the emission factors and the emission inventory of Agricultural machinery in Beijing in 2017 under real-world operation. The emissions of typical harvesters, Tractors, Agricultural transport vehicles, and farm construction machinery under real-world operation were tested by a portable emission measurement system. The results showed that different operation modes have a greater impact on the tailpipe emissions of Agricultural machinery. The CO, NOx, HC, and PM emissions were relatively stable when the engine is idling and moving compared to when the excavator is performing actual work. According to the classification and emission standards of various types of machinery, a relatively perfect emission factor system of Agricultural machinery in Beijing was established, which can provide reference and support for relevant research and management decisions. According to the emission factors of Agricultural machinery and fuel consumption in Beijing, the emissions of CO, NOx, HC, and PM in 2017 were 2566.60, 1239.29, 563.08, and 538.32 t, respectively. The total pollutants of transport machinery, Tractors, and combined harvester accounted for 98%, 95%, 95%, and 98% of the total concentrations of CO, NOx, HC, and PM, respectively. Therefore, transport machinery, tractor, and combined harvester should be the key control objects in the reduction of Agricultural machinery pollution.
Langhinotti, Camila Weber - One of the best experts on this subject based on the ideXlab platform.
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Construção, desenvolvimento e validação de um penetrômetro eletrônico de acionamento hidráulico
2018Co-Authors: Langhinotti, Camila WeberAbstract:Orientador: Samir Paulo JasperDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Agrárias, Programa de Pós-Graduação em Ciência do Solo. Defesa : Curitiba, 26/10/2018Inclui referências: p. 40-42Resumo: A resistência do solo à penetração tem sido largamente utilizada como indicadora da compactação do solo, por estar relacionada a importantes atributos do solo e das plantas e por ser uma medida fácil e rápida de determinação. A determinação da resistência do solo à penetração com uso do penetrômetro orienta para as melhores estratégias para o manejo do solo, favorecendo assim o desenvolvimento das culturas. A resistência do solo à penetração é uma das propriedades físicas do solo diretamente relacionada com o crescimento das plantas e modificada pelos sistemas de preparo do solo. O objetivo deste trabalho foi desenvolver, construir e validar um penetrômetro eletrônico com acionamento hidráulico, visando padronizar a velocidade de penetração e facilitar a obtenção desses valores em áreas que exigem muitas leituras, possibilitando ainda o georreferenciamento dessas áreas no momento da obtenção dos valores. A execução deste trabalho ocorreu no Departamento de Solos e Engenharia Agrícola, aliada à estrutura física e do Laboratório de Adequação de Tratores Agrícolas. As leituras de resistência do solo à penetração e coletas de solos para as análises granulométricas, de umidade e densidade do solo foram realizadas em duas áreas distintas na Fazenda Experimental Cangüiri, pertencente à Universidade Federal do Paraná. Foram realizadas 36 leituras com cada penetrômetro nas duas áreas totalizando 144 leituras. Os resultados de resistência à penetração, dos equipamentos, foram analisados estabelecendo-se o intervalo de confiança pelo teste t a 10% de probabilidade, a cada 5 centímetros de profundidade. Concluindo que os dois penetrômetros foram eficientes na diferenciação dos níveis de compactação do solo das duas áreas, porém o penetrômetro desenvolvido operou de maneira satisfatória, apresentando maior sensibilidade ao detectar a resistência oferecida pela haste cônica ao penetrar o solo, assim validando este equipamento. Palavras-chave: Penetrômetro. Resistência do solo à penetração. Compactação.Abstract: Soil resistance to penetration has been widely used as an indicator of soil compaction because it is related to important attributes of soil and plants and is an easy measure and rapid determination. The determination of soil resistance to penetration using penetrometer guides to the best strategies for soil management, thus favoring the development of crops. Soil resistance to penetration is one of the soil physical properties directly related to the plants growth and modified by the soil tillage systems. The objective of this work was to develop, validate an electronic penetrometer with hydraulic drive, aiming at standardizing the penetration speed and facilitating the obtainment of these values in areas that require many readings, also allowing the georeferencing of these areas at the moment of obtaining the values. The work as performed in the department of soil and Agricultural engineering, allied to the physical structure and human resources of the laboratory of Tractors Agricultural Adequacy. Soil penetration readings and soil sampling for particle size, soil moisture and analyzes were performed in two distinct areas at the Cangüiri experimental farm, belonging to the Federal University of Paraná. 36 readings were performed with each penetrometer in the two areas totaling 144 readings. The results of penetration resistance equipment were analyzed by establishing the confidence interval by the t-test at 10% probability, at each 5cm of depth. Concluding that the two penetrometers were efficient in the differentiation of soil compaction levels of the two areas, however, the developed penetrometer operated in a satisfactory manner, presenting greater sensitivity when detecting the real resistance offered by the conical rod when penetrating the soil, thus validating this equipment. Key words: Penetrometer. Soil resistance to penetration. Compression
L. P. Gite - One of the best experts on this subject based on the ideXlab platform.
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analytical study of strength parameters of indian farm workers and its implication in equipment design
Agricultural Engineering International: The CIGR Journal, 2010Co-Authors: Rajvir Yadav, Sahastrarashmi Pund, N C Patel, L. P. GiteAbstract:Rajvir Yadav1, Sahastrarashmi Pund2, N. C. Patel3, L. P. Gite4 (1. Department of Farm Machinery & Power, College of Agril. Engg. & Tech., JAU Junagadh 362001 India; 2. RD 3. Junagadh Agricultural University, Junagadh 362001 India; 4. CIAE, Nabi Baug Bhopal, India) Abstract: Among the recent trends in development of Agricultural mechanization there are an increase in power and energy capacity of Tractors, Agricultural machines and equipments, an increase in their reliability and decrease in exploitation expenses and labour consumption. Reliability of Agricultural equipments is greatly enhanced provided it is designed with due consideration to the strength parameters of target users / operators. Therefore, strength parameters of 105 Agricultural workers (75 male and 30 female) were measured on “strength measurement setup” comprising load cell with digital indicator. The average push strength for male and female workers (with both hands in standing posture) was found to be 248.2 and 171.0 N respectively whereas the pull strength in standing posture was 232.3 and 141.7 N respectively. These strength parameters were found to play a significant role in design of manually operated push-pull type equipment. The right hand push and pull strength for male and female Agricultural workers are within the range of 49.7 to 96.5 N which prominently assist in the design of joystick, gear shift lever and handle lever. The mean value of maximum right leg strength in sitting posture for male and female workers are 394.2 and 280.5 N respectively which are found useful in the design of clutch pedal, brake pedal, accelerator pedal, pedal operated thresher and other foot operated controls. Average torque strength of both hands in standing posture for male and female workers are found to be 209.93 and 117.72 N-m respectively which can be used in the design of manually operated equipment like chaff cutter, sugarcane crusher, slicer, threshers etc. Torque strength of preferred hand in sitting posture and hand grip torque worked out in this study for both male and female workers are found very much useful in design of hand controls such as steering, knobs, etc. These strength parameters are found to play a significant role in design/ modification of hand controls and foot controls on different workplaces of machines. The machine workplaces designed on strength parameter data are found to greatly enhance the operator’s comfort, safety and efficiency as well. Keywords: strength and torque parameters, ergonomics, safety, Agricultural equipment Citation: Rajvir Yadav, Sahastrarashmi Pund, N. C. Patel and L. P. Gite. Analytical study of strength parameters of Indian farm workers and its implication in equipment design. Agric Eng Int: CIGR Journal, 2010, 12(2): 49-54.
Rajvir Yadav - One of the best experts on this subject based on the ideXlab platform.
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analytical study of strength parameters of indian farm workers and its implication in equipment design
Agricultural Engineering International: The CIGR Journal, 2010Co-Authors: Rajvir Yadav, Sahastrarashmi Pund, N C Patel, L. P. GiteAbstract:Rajvir Yadav1, Sahastrarashmi Pund2, N. C. Patel3, L. P. Gite4 (1. Department of Farm Machinery & Power, College of Agril. Engg. & Tech., JAU Junagadh 362001 India; 2. RD 3. Junagadh Agricultural University, Junagadh 362001 India; 4. CIAE, Nabi Baug Bhopal, India) Abstract: Among the recent trends in development of Agricultural mechanization there are an increase in power and energy capacity of Tractors, Agricultural machines and equipments, an increase in their reliability and decrease in exploitation expenses and labour consumption. Reliability of Agricultural equipments is greatly enhanced provided it is designed with due consideration to the strength parameters of target users / operators. Therefore, strength parameters of 105 Agricultural workers (75 male and 30 female) were measured on “strength measurement setup” comprising load cell with digital indicator. The average push strength for male and female workers (with both hands in standing posture) was found to be 248.2 and 171.0 N respectively whereas the pull strength in standing posture was 232.3 and 141.7 N respectively. These strength parameters were found to play a significant role in design of manually operated push-pull type equipment. The right hand push and pull strength for male and female Agricultural workers are within the range of 49.7 to 96.5 N which prominently assist in the design of joystick, gear shift lever and handle lever. The mean value of maximum right leg strength in sitting posture for male and female workers are 394.2 and 280.5 N respectively which are found useful in the design of clutch pedal, brake pedal, accelerator pedal, pedal operated thresher and other foot operated controls. Average torque strength of both hands in standing posture for male and female workers are found to be 209.93 and 117.72 N-m respectively which can be used in the design of manually operated equipment like chaff cutter, sugarcane crusher, slicer, threshers etc. Torque strength of preferred hand in sitting posture and hand grip torque worked out in this study for both male and female workers are found very much useful in design of hand controls such as steering, knobs, etc. These strength parameters are found to play a significant role in design/ modification of hand controls and foot controls on different workplaces of machines. The machine workplaces designed on strength parameter data are found to greatly enhance the operator’s comfort, safety and efficiency as well. Keywords: strength and torque parameters, ergonomics, safety, Agricultural equipment Citation: Rajvir Yadav, Sahastrarashmi Pund, N. C. Patel and L. P. Gite. Analytical study of strength parameters of Indian farm workers and its implication in equipment design. Agric Eng Int: CIGR Journal, 2010, 12(2): 49-54.