Gears
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. OPERATIONAL AND ENERGY PERFORMANCE OF 250 kW DOUBLE WHEELED VERSUS RUBBER HALF-TRACKED TRACTORS IN THE SOYBEAN SOWING
ABSTRACT The technological innovation in agriculture seeks to improve the performance of mechanized assemblies and, currently, rubber half-tracks are a valuable solution for agricultural tractors, combining traction performance and less soil compaction. The objective of the experiment was to evaluate the operational and energy performance of double wheeled v
Eng. Agríc.. Publicado em: 2020-10
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2. Hydraulic System Onboard Monitoring and Fault Diagnostic in Agricultural Machine
Abstract Agricultural Machinery as an off-road vehicle is the backbone of the World agricultural industry. Its main function is to operate as a prime mover and support the power requirements to function the various type of draft implements. In this regards, the hydraulic system is an important part and is controlled by the propagated oil which is cleaned by
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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3. Changing the characteristics of the nitrided layer using three different plasma configurations
ABSTRACT Direct current (DC) plasma nitriding offers some disadvantages, especially in parts with complex geometries, where the presence of edges is significant, such as gears, molds, and needle punched parts are strongly affected by this effect, leading to irregular formation of nitrided layers and high variation in surface hardness. To solve these problems
Matéria (Rio J.). Publicado em: 10/06/2019
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4. Optimal fishing samplers to reveal the morphological structure of a fish assemblage in a subtropical tidal flat
RESUMO Os caracteres morfológicos das espécies são essenciais para avaliar a estrutura funcional de uma assembleia de peixes, uma vez que as diferenças entre elas são indicativas de distintas características ecológicas. De forma geral, as planícies de maré são importantes para assembleias de peixes por oferecerem áreas para alimentação, refúgio
Neotrop. ichthyol.. Publicado em: 11/03/2019
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5. Abandoned, lost or otherwise discarded fishing gears in rocky reefs of Southern Brazil
Braz. j. oceanogr.. Publicado em: 2016-12
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6. Fault Detection in High Speed Helical Gears Considering Signal Processing Method in Real Simulation
Abstract In the present study, in order to detect the fault of the gearmeshs, two engaged gears based on research department of a major automotive company have been modeled. First off, by using the CATIA software the fault was induced to the output gear. Then, the faulty gearmesh and non-faulty gearmesh is modeled to find the fault pattern to predict and est
Lat. Am. j. solids struct.. Publicado em: 2016-11
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7. Charles Babbage (1791-1871) e a mecanização do cálculo: das engrenagens à máquina de pensar / Charles Babbage (1791-1871) and the mechanization of calculus: from the gears to the thinking machine
The theme of the origins of computers has aroused controversies that are not always well enlightened. This paper intends to contribute to the subject focusing on the mechanical calculating machines designed in the first half of the nineteenth century by Charles Babbage (1791-1871). It presents the main motivations of its inventor, his ideas, difficulties and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/10/2012
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8. Conflicts between river dolphins (Cetacea: Odontoceti) and fisheries in the Central Amazon: a path toward tragedy?
Dolphin interactions with fishermen have increased significantly and pose potential risks to the boto, Inia geoffrensis (Blainville, 1817), and the tucuxi, Sotalia fluviatilis (Gervais & Deville, 1853). The main objective of the present paper was to describe the existing conflicts between river dolphins and fishermen in the municipality of Manacapuru region.
Zoologia (Curitiba). Publicado em: 2012-10
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9. Polyamide worm gear: manufacturing and performance
The focus of this paper is to establish a characterisation method for seven polyamide (PA) grades to determine the major material to manufacture an automotive worm gear. The composite properties were measured according to the worm gear loadings: tensile strength, Young's modulus, abrasion and impact resistance. They were also correlated to the PA moisture ab
Materials Research. Publicado em: 07/06/2012
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10. The influence of contact stress distribution and specific film thickness on the wear of spur gears during pitting tests
One of the main gear damage mechanisms is the formation of pitting and spalling on the tooth flank. Several factors have significant influence on the damage formation, such as: contact stress level; tooth profile type; relative contact speed; surface finish and lubrication conditions. This work comprehends the global observation of all such parameters and wa
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2012-06
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11. FREE SPEECH AND COPYRIGHT: MAPPING A CONFLICT RESHAPED BY TECHNOLOGY / LIBERDADE DE EXPRESSÃO E DIREITO: MAPEANDO UM CONFLITO RESSIGNIFICADO PELA TECNOLOGIA
This paper addresses the potential conflict between freedom of expression and copyright law, pointing out how this conflict is developed in the context of new digital technologies. The study indicates that while new digital technologies and the Internet dramatically expanded the possibilities of each individual to access information and to express freely ¿
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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12. A política de educação de jovens e adultos e educação profissional em Goiás: tranças desencadeadas com o proeja / The policy of youth and adult and professional education in Goias: gears developed with Proeja
Este trabalho investiga a implantação do Programa Nacional de Integração da Educação Profissional com a Educação Básica na Modalidade de Educação de Jovens e Adultos (Proeja) na rede estadual de Goiás. Possui como baliza o enfrentamento clássico no âmbito das políticas educacionais: a implantação de um programa federal na rede estadual de en
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011