Buscar
Itens para a visualização no momento 51-60 of 274
Comparação de métodos para avaliação postural em operação de máquinas agrícolas
(Universidade Federal de Santa Maria, 2018-03-02)
Agriculture is a very old activity and its development in the country in recent decades is strongly linked to the great technological evolution of agricultural machinery and equipment. On the other hand, the increasing use ...
Uso do método árvore de causas na investigação de acidente rural
(Universidade Federal de Santa Maria, 2008-01-21)
The accidents at work cause thousands of deaths every day around the world and Brazil is considered one of the champions of occurrences. They are caused by many
factors of being human, organizational, machinery and equipment ...
Avaliação de mecanismos dosadores na distribuição longitudinal de sementes de feijão-caupi (Vigna unguiculata (L.) Walp)
(Universidade Federal de Santa Maria, 2018-03-09)
The objective was to evaluate two seed pneumatic metering mechanisms and one of
a honeycomb disk in different conditions of cross slope and velocity of displacement in
the longitudinal distribution of cowpea seeds. The ...
Modelagem matemática para dosadores de fertilizantes por delineamento composto central rotacional
(Universidade Federal de Santa Maria, 2014-02-07)
The world population growth poses to modern agriculture a number of challenges, one of the main ones is the assurance of the food supply. For this, the rational and appropriate use of fertilizers that can provide increased ...
Distribuição longitudinal de sementes de milho e soja em função do tubo condutor, mecanismo dosador e densidade de semeadura
(Universidade Federal de Santa Maria, 2014-01-24)
The competitiveness of the agricultural sector allows producers to seek technology that operate, in a manner, precisely as possible. Some crops have great sensitivity to population change and also the arrangement of the ...
Desenvolvimento de sensor para quantificação do fluxo de massa de fertilizantes sólidos
(Universidade Federal de Santa Maria, 2020-02-03)
This study assumes that the insertion of sensors capable of instantaneous measurement of the mass flow of fertilizers, after its release by the feeder, can assist in the monitoring of the rates applied in each seeding line, ...
Levantamento e identificação de símbolos gráficos utilizados para caracterizar comandos e controles de tratores agrícolas
(Universidade Federal de Santa Maria, 2008-01-23)
The main objective of the study was carrying out the review and identification of the graphic symbols used in tractors, using as a setting technical standards ABNT NBR 11379 (1990) and ISO 11684 (1995), with the purpose ...
Fertilização nitrogenada do algodoeiro prescrita por sensor óptico no oeste da Bahia
(Universidade Federal de Santa Maria, 2014-02-25)
Proper nutrition nitrogen in cotton directly affects obtain high productivity of the crop. Decision making based on the use of sensors is an alternative to increase the efficiency of fertilization with this nutrient, ...
Fluxo de gases de efeito estufa em sistemas de preparo do solo e rotação de culturas no planalto do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2009-02-27)
The main greenhouse gases (GHG) are the nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2), whose atmosphere concentrations increased in an unprecedented rate since the Industrial Revolution. This work aim evaluates ...
Fertilização a taxa variável de nitrogênio em trigo integrando sensoriamento de cultura e zonas de manejo na região Sul do Brasil
(Universidade Federal de Santa Maria, 2016-07-25)
There are basically two approaches for variable rate of nitrogen prescription, the first one based on management zones (predictive) and the second one based on remote sensing (reactive). These approaches have complementary ...