Structural reliability depends on uncertainties in resistance and loads. In many practical cases the resistance dominates and a reduction of uncertainty about resistance is an effective way of increasing safety. It can be accomplished by proof loading. A truncated distribution is considered and reliability indices are calculated for various proof load levels. The structural reliability is sensi...

BACKGROUND The availability of sensitive assays for plasma HIV viral load and the trend toward earlier and more aggressive treatment of HIV infection has led to the inappropriate use of these assays as primary tools for the diagnosis of acute HIV infection. OBJECTIVE To describe limitations in the use of plasma viral load testing for the diagnosis of HIV infection. DESIGN Case series. SET...

The present study was designed to investigate the role of abnormalities in red blood cell sodium-potassium-chloride (Na-K-Cl) cotransport and Na+ pump as predictors of the pressor response to chronic oral Na+ loading in young whites and blacks. Subjects were healthy adults from 18 to 23 years of age and included normotensive whites (n = 24) and normotensive blacks (n = 35). Red blood cell trans...

The frequency of power system is very sensitive to load changing when operating in islanded mode. This may causes overloading or loss of generation cases. Under-Frequency Load Shedding (UFLS) Scheme is commonly applied to stabilize the frequency during these cases. Conventional UFLS scheme operates successfully in interconnected grid system and may not work well when applied to DG based system ...

Prehypertensive Dahl salt-sensitive rats on low sodium diet have impaired baroreceptor and cardiopulmonary receptor function as compared with Dahl salt-resistant control rats. We tested whether these abnormalities influenced the ability of conscious prehypertensive Dahl saltsensitive rats to excrete a moderate intravenous isotonic saline volume load (0.9% NaCl, 3% body weight i.v.). During cont...

In this paper, a new steady-state model of three-phase asynchronous motor is proposed to be used in the studies electrical power systems. The allows for obtaining response demand active and reactive as function voltage frequency. contribution integration characteristics mechanical load that can drive motors, either constant or variable load. was evaluated on 2500 kW 6000 V motor, two types load...

Respiratory syncytial virus (RSV) is known to cause acute lower respiratory tract infections (ARI) in young children and is involved in exacerbation of chronic obstructive pulmonary disease (COPD) in adults. The role of RSV in stable COPD and the viral load in different respiratory diseases has not been investigated to date. The present authors established and evaluated a quantitative TaqMan re...

This paper studies cluster load balancing policies and system support for fine-grain network services. Load balancing on a cluster of machines has been studied extensively in the literature, mainly focusing on coarse-grain distributed computation. Fine-grain services introduce additional challenges because system states fluctuate rapidly for those services and system performance is highly sensi...

Rolling bearings are one of the most widely used elements in industrial applications. Shock pulse method (SPM) has proven successfully as a diagnostic tool in determining bearing health. On the basis of illustrating the principle of SPM, this paper mainly concentrates on investigating the effect of different operating conditions on SPM. The shock pulse signals are derived from the wind turbine ...