Quantitatively assessing attenuation and dispersion of elastic-wave velocities in partially saturated reservoir is difficult because its sensitivity to fluid distribution. We conducted experiments on homogeneous Indiana limestone samples, by two methods: drying imbibition which lead different distribution for a given saturation. Forced oscillations (from 0.004 100 Hz) ultrasonic (1 MHz) measure...

A male patient aged 50 years presented to the emergency department with a complaint of dysphagia after ingestion of a whole plum without chewing. His history revealed a diagnosis of schizophrenia 15 years ago. This was the patient’s second presentation to hospital with this complaint. At the first-step hospital, his relatives and the physicians did not believe the patient due to his schizophren...

UNLABELLED Pulmonary hypertension (PH) can result in vascular pruning and increased tortuosity of the blood vessels. In this study we examined whether automatic extraction of lung vessels from contrast-enhanced thoracic computed tomography (CT) scans and calculation of tortuosity as well as 3D fractal dimension of the segmented lung vessels results in measures associated with PH. In this pilot ...

Carbonate system variables were measured in the South Atlantic sector of the Southern Ocean along a transect from South Africa to the southern limit of the Antarctic Circumpolar Current (ACC) from February to March 2008. Eddies detached from the retroflection of the Agulhas Current increased the gradients observed along the fronts. Minima in the fugacity of CO2, fCO2, and maxima in pH on either...

In order to solve the problems of protection misoperation and refusing operate caused by lack measurement information in smart substation, a substation method which can effectively eliminate influence transformer inrush current bus CT saturation when connecting line is missing proposed. Through theoretical analysis synthesis based on Kirchhoff law, it proved that will lead misjudgment different...

Preventive maintenance in the transformer is performed through a differential relay protection system, and it protects from internal external faults. However, Current Transformer (CT) system mal-operates during inrush currents. CT saturates due to magnetizing currents causes false tripping of relays. Moreover, identification either current or faults needs be diagnosed. For above problem, contin...

Despite advancements in specifying 3D internal microstructure of reservoir rocks, identifying some sensitive phenomenons are still problematic particularly due to image resolution limitation. Discretization study on such CT-scan data always has encountered with such conflicts that the original data do not fully describe the real porous media. As an alternative attractive approach, one can recon...