Results 11 to 20 of about 130,989 (297)

Force-Induced DNA Slippage [PDF]

open access: yesBiophysical 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

Evaluation of tractive performance of four agricultural tractors in laterally inclined terrain Avaliação do desempenho operacional de quatro tratores agrícolas em terreno inclinado lateralmente

open access: yesEngenharia 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

open access: yesTransactions 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

Energetic efficiency of an agricultural tractor in function of tire inflation pressure [PDF]

open access: yesEngenharia 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

Distribution and change of stresses, slippage, tension, and friction forces in wound rolls (Simulation of center winding without nip)

open access: yesNihon 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]

open access: yesНаучно-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

Thermal-induced slippage of soft solid films [PDF]

open access: yes, 2019
The dynamics of interfacial slippage of entangled polystyrene (PS) films on an adsorbed layer of polydimethylsiloxane (PDMS) on silicon was studied from the surface capillary dynamics of the films.
Chen, Fei   +3 more
core   +1 more source

A structural investigation of novel thiophene-functionalized BEDT-TTF donors for application as organic field-effect transistors [PDF]

open access: yes, 2014
Three new unsymmetrical thiophene-functionalized bisIJethylenedithio)tetrathiafulvalene (BEDT-TTF) donors (1–3) have been synthesized, characterised and examined as semiconducting materials for organic field-effect transistor (OFET) devices.
Alberola   +65 more
core   +1 more source

The Effect of Adding Water to the Driving Tires of Tractor and Tillage Depths on the Field Performance of Mould Board Plough [PDF]

open access: yesAl-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

Impact of Geometry of Toothed Segments of the Innovative KOMTRACK Longwall Shearer Haulage System on Load and Slip during the Travel of a Track Wheel

open access: yesEnergies, 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

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