The paper presents a comparison of the results fatigue crack growth rate for raw rail steel, steel reinforced with composite material—CFRP—and also in case counteracting using stop-hole technique, as well an application “anti-crack fluid”. All specimens were tested constant load amplitude methods maximum loading Fmax = 8 kN and stress ratio R σmin/σmax 0.1 order to analyze efficiency different ...

Electronic fetal monitoring (EFM) is widely used in intrapartum care as the standard method for well-being. Our objective was to employ machine learning algorithms predict acidemia by analyzing specific features extracted from heart signal within a 30 min window, with focus on last deceleration occurring closest delivery. To achieve this, we conducted case–control study involving 502 infants bo...

several empirical methods for flood flow rate estimation have been presented. in this study,eight new empirical runoff estimation method including dredge & burge, bourges, inglis, faning, hyderabad, burkli ziegler, cramar and possenti were calculated in bakhtegan watershed which is located in fars province. after studying empirical methods for annual flood flow rate estimation and comparing...

The advent of modern Doppler two-dimensional ultrasound technology has overcome the need of invasive measurements of several important cardiac parameters. It allows estimation of preload, contractility, and afterload. Positive end-expiratory pressure (PEEP) is associated with a reduction in cardiac output. The responsible mechanisms are controversial. To evaluate the cardiovascular responses to...

Postural sway and heart rate were recorded in young men viewing emotionally engaging pictures. It was hypothesized that they would show a human analog of "freezing" behavior (i.e., immobility and heart rate deceleration) when confronted with a sustained block of unpleasant (mutilation) images, relative to their response to pleasant/arousing (sport action) or neutral (objects) pictures. Voluntee...