In this paper, vibration analysis of multiple-stepped Bernoulli-Euler and Timoshenko beams carrying point masses is presented analytically for various boundary conditions. Each attached element is considered to have both translational and rotational inertias. The method of solution is “transfer matrix method” which is based on the changes in the vibration modes at the vicinity of any discontinu...

in order to evaluate the effect of different mechanical treatments (application of sulphuric acid, boiling water and flooding) on seed dormancy breaking of licorice, an experiment was carried out in randomized complete block design in 2012. moreover, a factorial scheme in rcbd was performed to assess the application of giberalic acid and potassium nitrate treatment as well as stratification and...

Total rotational energy transfer rates have been measured at 1330 K for specific rotational levels in the OH A2X +, v' = 0 state in collisions with H20. Rotational levels ranging from N' = 0 to 15 were studied. Measurements were performed in the post-flame region of a stoichiometric H2/O2/He flame operating at 25 mbar. Quenching rates following excitation of individual upper rotational states w...

Abstract Temperatures in the drilling environment can reach 150 °C and pressures up to 30 MPa, all of which cause oil film rupture even seal failure. In addition, under high pressure, viscosity changes lead stress relaxation, may eventually failure as well. order study influence temperature pressure conditions on performance during permeation loading method both sides is used finite element mod...

Starting with descriptions of rotational seismology, areas of interest and historical field measurements, the fundamental requirements for rotational seismometers for seismological and engineering application are formulated. On the above basis, a review of all existing rotational seismometers is presented with a description of the principles of their operation as well as possibilities to fulfil...

To determine whether rotational blood flow or chiral asymmetry exists in the human descending thoracic aorta, we established the ability of color Doppler ultrasound to detect rotational flow in a tornado tube model of a vortex descending fluid column. In a model of the human aortic arch with a pulse duplicator, color Doppler was then used to demonstrate that rotational flow occurs first in the ...

Failure detection is employed in the industry to improve system performance and reduce costs due unexpected malfunction events. So, a good dataset of desirable for designing an automated failure system. However, industrial process datasets are unbalanced contain little information about behavior uniqueness these events high cost running just get undesired behaviors. For this reason, performing ...