Tracks
Mostrando 1-12 de 283 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. “Meu lugar é no cascalho”: políticas de escrita e resistências
Resumo O problema abordado neste artigo é como podemos produzir fraturas no modelo normatizado de escrita acadêmica ao qual estamos historicamente familiarizadas. Considerando esta questão, apresentamos um ensaio teórico e uma experiência de escrita que se ancora na ideia de afrontarmos a fórmula objetividade-neutralidade-universalidade que engessa nos
Fractal, Rev. Psicol.. Publicado em: 20/12/2019
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3. Algumas pistas sobre o marketing ambiental pelo olhar da psicossociologia
Resumo Este ensaio teórico busca uma reflexão crítica sobre o marketing ambiental, pelo olhar da psicossociologia, para discutir sobre o conceito de ecosofia, enfocando como ocorrem os processos de agenciamento de enunciação de um “rizoma verde” na captura de modos de ser “ecológico” ou “ecopsicossocial”. Desta forma, o presente trabalho vi
Fractal, Rev. Psicol.. Publicado em: 20/12/2019
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4. Efeito do metal de adição na resistência ao desgaste por deslizamento de um aço estrutural soldado por GMAW
RESUMO O objetivo do presente trabalho foi avaliar o efeito do metal de adição na soldagem, e das microestruturas resultantes, na resistência ao desgaste de juntas soldadas de um aço estrutural ASTM A242, que possui resistência à corrosão atmosférica e é utilizado na fabricação de vagões destinados ao transporte de minério. As amostras foram sol
Matéria (Rio J.). Publicado em: 16/09/2019
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5. Reduction Behavior of Low Grade Iron Ore at Reducing Conditions Simulating Different Zones of Blast Furnace
Representative technological samples for Baharia iron ore are collected from El-Gedida iron ore mines at the western desert of Egypt. Baharia iron ore was fired at 1000ºC for 3 hours, then the green and fired samples was isothermally reduced by different ratios of H2/CO/CO2/N2 which closely represent the theoretical reduction conditions in different zones o
Mat. Res.. Publicado em: 02/09/2019
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6. SOIL PHYSICAL ATTRIBUTES AND PRODUCTION COMPONENTS OF SUGARCANE CULTIVARS IN CONSERVATIONIST TILLAGE SYSTEMS
ABSTRACT Machine traffic and conventional tillage can cause structural degradation of the soil, affecting the physical attributes and, consequently, the production and longevity of the sugarcane field. The objective of this study was to evaluate the production components of sugarcane cultivars (RB965902, RB985476, RB966928, RB855156, RB975201, RB975242, RB03
Eng. Agríc.. Publicado em: 25/04/2019
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7. Distribution of European and African species of genus Diaptomus (Copepoda: Calanoida: Diaptomidae): a track analysis
ABSTRACT The distributional patterns of 13 species of Diaptomus Westwood, 1836 were analyzed using the panbiogeographical method of track analysis. Locality records were compiled from the literature and mapped for the construction of individual tracks for each species. These tracks were superimposed to find the generalized tracks. Four generalized tracks wer
Nauplius. Publicado em: 03/12/2018
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8. Fatiga de contacto por rodadura en acero SAE 1050 recubierto con TiN, posteriormente templado
ABSTRACT The use of ceramic coatings of the nitride, carbide, or diamond type on steel substrates promotes the improvement of tribology properties. Nevertheless, high hardness gradients and adhesion problems may deteriorate the performance of these coatings when subjected to Rolling Contact Fatigue (RCF). Some studies on steels with ceramic coatings were car
Matéria (Rio J.). Publicado em: 19/07/2018
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9. Influences of chia flour and the concentration of total solids on the characteristics of ‘dulce de leche’ from goat milk
Abstract A factorial categorical design totalling six treatments was applied to investigate the influence of the substitution of corn starch with whole and partially defatted chia flour under the technical characteristics (centesimal composition, instrumental analyses, and sensory evaluation) and nutritional disorders (composition of fatty acids and index of
Food Sci. Technol. Publicado em: 22/03/2018
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10. Laser Cladding of Fe-based Metallic Glass/MoS2 Self-lubricating Composites: Effect of Power and Scanning Speed
MoS2 powder has been used to form "self-lubricating" composite coatings, which are very useful to increase the lifetime of machines where liquid lubricants cannot be used. In this work, amorphous overspray powder of Fe60Cr8Nb8B24 (at%) alloy was mixed with 5wt.% MoS2 powder and it was used to produce single tracks on AISI 1020 steel substrates by laser cladd
Mat. Res.. Publicado em: 01/02/2018
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11. Influence of artificial lights on the orientation of hatchlings of Eretmochelys imbricata in Pernambuco, Brazil
ABSTRACT Sea turtle hatchlings, in natural abiotic conditions, emerge from their nests at night and go directly to the sea, following the moonlight’s reflection in the ocean. Increased human activities such as tourism and artificial lights on the coasts, however, have interfered with the ability of sea turtle neonates to find their correct destination, neg
Zoologia (Curitiba). Publicado em: 19/10/2017
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12. Rheological Characterization of Bentonite Dispersions with Xanthan for Oil Well Drilling Fluids
Shear tests using a coaxial cylinders viscometer were performed in order to determine the rheological and thixotropic properties of xanthan gum dispersions with sodium bentonite in the presence of high salt concentrations of sodium and calcium chlorides. The dispersions rheology with different temperatures and concentrations of NaCl, CaCl2 and xanthan gum we
Mat. Res.. Publicado em: 05/06/2017