High blood pressure (BP), a major established predictor of cardiovascular disease, is the leading risk factor for mortality worldwide.1,2 Both systolic BP (SBP) and diastolic BP (DBP) have continuous, independent relations with the risk of cardiovascular disease3; however, considerable uncertainty persists about the relative importance of SBP, DBP, and their combination in predicting cardiovasc...

background nasal septal deviation (nsd) can cause upper airway obstruction, which results in hypoxia and therefore, pulmonary vasoconstriction, ventricular hypertrophy and right-sided heart failure. objectives the aim of this study is to determine the mean pulmonary arterial pressure (mpap) of the patients with nsd and the effect of septoplasty on pulmonary arterial pressure. patients and metho...

this paper presents a simplified approach to estimate the resultant force, which should be provided by a retention system, for the equilibrium of unstable slopes. the results were obtained with a developed algorithm, based on limit equilibrium analyses, that assumes a two-part wedge failure mechanism. design charts to obtain equivalent earth pressure coefficients are presented. based on the res...

Numerous methods have been developed for measuring mechanical properties of bilayer lipid membranes (BLMs) such as the Young’s modulus, strength, bending modulus, and others. This paper introduces a new method for measuring the maximum pressure that can be withstood by BLMs formed over a porous substrate. This quantity, referred to as the failure pressure, has not been reported in the literatur...

In some natural events such as soil failure the deformations are localized in narrow restrictions, which are called shear bands. This event which is a fundamental phenomenon in granular material, has been widely investigated during recent decades within expensive experimental tests and also some numerical simulations. Most of previously used numerical methods are based on continuum theories des...

Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valve assemblies (GLV). One failure mode occurs when the GLV check valve fails and product passes into the well annulus, potentially reaching the wellhead. This is a growing concern as offshore wells are drilled thousands of meters below the ocean floor in extreme temperature and pressure conditions, and repair and ...

BACKGROUND Baroreflex failure syndrome is a rare disorder which causes labile blood pressure, headache, flushing, diaphoresis and emotional lability. It is caused by history of trauma or radiotherapy in the cervical legion, bilateral carotid-body tumor or resection of glossopharyngeal nerve. We experienced a case of hemodialysis patient who had difficulty in controlling blood pressure during di...

There are various parameters that affect stability and expansion of failure zones in under pressure tunnels. Among the important parameters that affect failure zones around the tunnels are cohesion and internal friction angle of the rock mass. In addition, the cross sectional shape is the considerable point in failure distribution around the tunnels. The stress analysis method is one of the app...

Elevated right atrial (RA) pressure is associated with renal impairment and increased mortality in patients with heart failure. Raised jugular venous pressure, as a bedside estimate of RA pressure, has similarly been shown to be associated with adverse outcome with increased heart failure hospitalizations and death. RA pressure (and jugular venous pressure) normally falls during inspiration des...

Nowadays, due to the increasing power of diesel engines, especially heavy duty diesel engines, and increasing gas pressure inside the combustion chamber, the forces acting on the engine bearings have dramatically raised. On the other hand, becaus eof the competition in the market, it is necessary to increase the engine bearing life and reduce its failure as much as possible. The engine bearings...