Results 11 to 20 of about 31,956 (263)
Engenharia Agrícola, 2009 O adequado manejo de culturas de cobertura no plantio direto tem-se mostrado excelente alternativa para melhorar as condições de semeadura. O objetivo do presente trabalho foi avaliar o desempenho do trator agrícola no manejo dos restos culturais do ...
Jorge W. Cortez +4 more
doaj +1 more source
Engenharia Agrícola, 2011 The present work aimed to evaluate the tractive performance of four agricultural tractors with auxiliary front traction in function of six lateral inclinations in a lateral track of trials, which belongs to the Agronomic Sciences Faculty from the São ...
Fabricio Leite +3 more
doaj +1 more source
Experimental and Numerical Analysis of Steel Joints in Round Wood
Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series, 2014 The paper analyses a drawn steel joint in round logs for which several types of reinforcements have been proposed. The load-carrying capacity of the reinforcements have been tested in laboratories. At the same time, numerical modelling has been performed
Mikolášek David +3 more
doaj +1 more source
Force-Induced DNA Slippage [PDF]
Biophysical Journal, 2007 DNA containing repetitive sequences displays richer dynamics than heterogeneous sequences. In the genome the number of repeat units of repetitive sequences, known as microsatellites, may vary during replication by DNA slippage and their expansion gives rise to serious disorders. We studied the mechanical properties of repetitive DNA using dynamic force
Kühner, Ferdinand +4 more
openaire +4 more sources
Energetic efficiency of an agricultural tractor in function of tire inflation pressure [PDF]
Engenharia Agrícola, 2013 The tire inflation pressure, among other factors, determines the efficiency in which a tractor can exert traction. It was studied the effect of using two tire inflation pressures, 110.4 kPa in the front and rear wheels, 124.2 kPa in the front wheel and ...
Leonardo de A. Monteiro +4 more
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2021 Distribution and change of roll stresses, slippage, web tension, and friction forces during winding rolls are investigated using commercial FEM software.
Shigeo YANABE, Shigeru NAGASAWA
doaj +1 more source
Control of dynamic biped walking machine with limited friction in foot [PDF]
Научно-технический вестник Брянского государственного университета, 2023 A non-trivial problem in the biped walking is the preservation of stability under external influences without slowing down velocity. A dynamic walking control algorithm with a hierarchical structure is proposed in the article.
Borina A.P.
doaj +1 more source
On slippage tests I. A general type of slippage test and a slippage test for normal variates
Indagationes Mathematicae (Proceedings), 1958 In this paper slippage tests for variates following various specified distributions, viz the normal, the Poisson, the binomial and the negative binomial, as well as a slippage test for the method of m rankings and a distributionfree k-sample slippage test, are discussed. These tests are all of the general type discussed in section 2.
Doornbos, R., Prins, H.J.
openaire +2 more sources
The Effect of Adding Water to the Driving Tires of Tractor and Tillage Depths on the Field Performance of Mould Board Plough [PDF]
Al-Qadisiyah Journal For Agriculture Sciences, 2012 The study has been conducted in AL-Azaizya city (AL-Kut GovernorateK , 80 km south-east Baghdad . To evaluate the field performance of mould board plough.
doaj +1 more source
Energies, 2021 Longwall shearers operating in the underground mine workings move along the longwall face along the conveyor troughs. The haulage system, which is made up of two kinematic pairs in the form of track wheels installed in shearer movers, cooperating with ...
Krzysztof Kotwica +4 more
doaj +1 more source