385 resultados para Tratores agricolas - Ruído


Relevância:

10.00% 10.00%

Publicador:

Resumo:

As relações entre Brasil e China vêm se estreitando ao longo dos anos, principalmente após a entrada da China na OMC em 2001, o que os tornou grandes parceiros comerciais. Esse padrão de comércio é marcado pela exportação de produtos brasileiros abundantes em recursos naturais e importação de produtos chineses de alto uso tecnológico. Sendo assim, é notável que a grande expansão da economia Chinesa reproduz grandes impactos no meio ambiente. Entretanto, o governo Chinês mostra sinais de preocupação e está buscando formas de amenizar os problemas. Como a prioridade do governo é a prevenção de mais danos ambientais, o uso de barreiras não tarifárias de caráter ambiental é cada vez mais frequente. O presente trabalho analisa o uso dessas barreiras técnicas e seus impactos na exportação de produtos brasileiros à China. Foram calculados coeficientes que mostram, junto a outros dados empíricos, que há uma forte proteção dos produtos Reatores Nucleares (HS84), Máquinas e aparelhos elétricos (HS85) e Automóveis e tratores (HS87) quanto a essas barreiras

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Pesticids are chemical products used to control plagues (animal and vegetable) and plant diseases. Due to the process of automation occurred in the agriculture in 1960-1970, the agrotoxics began to be largely used in Brazil. Their physical-chemical proprieties, as well as the frequency of use, form of application, environmental biotic and abiotic characteristics and climatic conditions will determine their environmental destination. These variables will define the spectrum of environmental impacts and human health problems caused by the agrotoxics. The human health impacts might be acute or chronic, mainly upon neurological, reproductive and respiratory process. In the environment, the agrotoxics cause transformations and modifications in biota, water, soil and other ecosystems. To make farmworkers aware of alternatives to massive use of agrotoxics is the guarantee for an agriculture development more sustainable, without disorders in human health and in environment

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Agricultural mechanization improved the efficiency of field operations by providing an increase in crop production. The intensified mechanization, however, has led to higher energy use mainly in the area of fuel consumption. The objective of this study was to compare the fuel consumption of tractors using two different tire pressures for two different types of soil during tillage with irrigated cotton in semi-arid regions. These tests were performed at the Maricopa Agricultural Center (MAC), an experimental farm belonging to The University of Arizona with a Case 4x2 TDA 88kW equipped with an autopilot system. The results showed lower fuel consumption using a tire pressure of 124 kPa on sandy clay loan soil.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Currently, the efficiency in field operations and the increased productivity of crops is only possible with the use of agricultural machinery and equipment. This intensification of mechanized activities in agriculture, however, led to higher energy costs on farms mainly in the fuel consumption of agricultural tractors. The objective was to compare the fuel consumption of a tractor on tillage operations for irrigated cotton in semi-arid region varying two tire inflation pressures. The tests were conducted in Maricopa Agricultural Center (MAC), an experimental farm belonging to The University of Arizona using a 4x2 TDA Case tractor equipped with a 88kw autopilot system. The results showed lower values in the hourly fuel consumption by using the minimum tire inflation pressure of 124 kPa for all tillage equipment used.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Pós-graduação em Agronomia - FEIS

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Pós-graduação em Geografia - IGCE