In this paper, we design and analyse a two degree-of-freedom (TDOF) repetitive control system for a motor/gear transmission system with actuator saturation. Modifications are made for our previous design to incorporate the performance-limiting element, i.e. actuator saturation, to acquire lower order controller, and to achieve faster computation. Furthermore, structured singular value (μ) is us...

Earthquake-induced liquefaction is one of the major causes building damage as it decreases strength and stiffness soil. The resistance soils increases significantly degree saturation decreases, making soil desaturation an effective measure for mitigation this phenomenon. This paper presents a comparative analysis alluvial sand from Aveiro (Portugal) under fully partially saturated conditions. F...

Idiopathic pulmonary fibrosis (IPF) is a relentlessly progressive disease with a median survival of approximately 3 yrs. Measurements of airflow and lung volumes at rest are generally used to monitor the clinical course in this disorder. This study was designed to determine if a modified version of the 6-min walk test, called the timed walk test, accurately characterises disease severity and su...

NGC 4258 is well known for its 22 GHz water maser features that appear to reside in a thin Keplerian disk orbiting at R0 = 0.13 pc. The influence of gravitational redshift on the level of maser saturation and the line strength and width of systemic water maser emission is studied. The effective gravitational velocity shift along the gain path through the disk amounts to about twice the thermal ...

BACKGROUND The effect of normobaric hyperoxia on brain oxygenation in the presence or absence of intact autoregulation has not been studied previously in acute traumatic brain injury (TBI). METHODS In this prospective clinical investigation of 50 patients operated on for severe TBI, cerebral blood flow (CBF) velocity in the middle cerebral artery was measured using transcranial Doppler. Regio...

Following previous experimental and computational studies, this article further investigates the applicability of the Stuart– Landau equation to describe the Hopf bifurcation occurring for flow past a circular cylinder. It is shown that when the amplitude variable is taken as the transverse velocity component at a point in the wake, the so-called Landau constant varies considerably with positio...

The objective of the present investigation was to enhance the oral bioavailability of practically insoluble Candesartan cilexetil [CC] by preparing nanosuspension. The nanosuspension was prepared by media milling using zirconium oxide beads and converted to solid state by spray drying. The spray dried nanosuspension of CC [SDCN] was evaluated for particle size, zeta potential, saturation solubi...

Dendritic integration plays a key role in the way information is processed by nerve cells. The large motion-sensitive interneurons of the fly appear to be most appropriate for an investigation of this process. These cells are known to receive input from numerous local motion-sensitive elements and to control visually-guided optomotor responses (e.g., Trends Neurosci., 11 (1988) 351-358; Staveng...

In this study, we investigate the complexity of two-phase flow (air/water) in a heterogeneous soil sample by using a complex network theory .Based on the different similarity measurements (i.e., correlation, Euclidean metrics) over the emerged patterns from the evolution of saturation of non-wetting phase of a multi-heterogeneous soil sample, the emerged complex networks are recognized. Underst...

A theoretical model for carbon dioxide (CO2) migration in tilted aquifers with groundwater flow is presented to evaluate the injection of CO2 into a geological formation. Capillary force in the flow of two immiscible fluids in a porous medium creates a saturation transition zone, where the saturation changes gradually. A vertical equilibrium assumption is employed to solve for the capillary pre...