We examined whether 18-, 24-, and 42-month-old children, like adults, prospectively adjust their hand movements to insure a comfortable hand posture at the endpoint, and whether children can learn to grasp efficiently by observation. The task required grasping a bar and fitting it into a hollow cylinder in order to make it light up. Measures of quantitative (grip height), as well as qualitative...

In this study the simple pullout concrete cylinder specimen reinforced by a single steel bar was analyzed for bond-slip behavior. Three-dimension nonlinear finite element model using ANSYS program employed to behavior of bond between and plain reinforcement. The includes eight-noded isoperimetric brick (SOLID65) while reinforcing modeled as truss member (LINK8). Interface (CONTAC52) used in ana...

Abstract The development of new piston geometries has shown great potential to achieve the low levels soot emissions required by regulation. Thus, present paper aims characterize influence a design over combustion process. It is characterized introduction protrusions around periphery bowl, evenly spaced. performance this geometry compared other that have been extensively analyzed in literature,...

This study presents an experimental investigation of a piston engine driven by compressed air. The compressed air engine was a modified 100 cm 3 internal combustion engine obtained from a motorcycle manufacturer. The experiments in this study used a test bench to examine the power performance and pressure/temperature variations of the compressed air engine at pressures ranging from 5 to 9 bar (...

To determine the distribution pattern of threshing and separating device, simulation experiment on our self-designed drum-shape bar-tooth longitudinal axial flow device was carried out with help EDEM software, by which radial curve threshed mixture along cylinder acquired. The three-dimensional mass drawn using Matlab bench test self-built small-scale performance platform, consistent conditions...

A unique in-house designed experimental apparatus for investigation of nucleation of droplets in CCS relevant systems is being developed by our team. The nucleation is measured with the help of a rapid pressure drop within an expansion chamber. In this study, a CO2 branch representing an important part of the mixture preparation device (MPD) was designed, assembled and tested. MPD is intended f...

PURPOSE To develop a project of hyperbaric chamber that allows its safe and reliable use in veterinary and animal experimentation. METHODS Based on the technical specifications for the construction of hyperbaric chambers for human beings, it has been developed a design of a chamber with dimensions and characteristics for the use of a midsize animal, (dog or pig), as well as a multiple chamber...

A fully variable valve train significantly increases the degree of freedom control internal combustion engines. Cylinder deactivation, thermal management, alternative strategies, and minimized pumping losses are just a few examples enabled by freely adaptable intake exhaust timings. This paper presents method to achieve accurate tracking load trajectories under stoichiometric conditions. feedba...

Abstract: In this study, the effect of fuel injection discharge curve and injection pressure simultaneously for upgrading power of heavy duty diesel engine by simulation of combustion process in AVL-Fire software are discussed. Hence, the fuel injection discharge curve was changed from semi-triangular to rectangular which is usual in common rail fuel injection system. Injection pressure with r...