An analytic solution is presented describing ̄ow to a drain in a semi-in®nite domain bounded by a leaky layer of constant thickness. The solution is developed by applying the method of images to two parallel boundaries: an inhomogeneity boundary and an equipotential boundary. It is then demonstrated that the solution for the problem with the leaky layer approximated by a leaky boundary (a mixed...

Conduction characteristics of amorphous InGaZnO thin-film transistors were investigated by applying constant drain current with gate bias (V GS) modulation. Constant drain current in the off-current (I off) level from the transfer characteristic was applied to the drain electrode and the measured drain voltage with the gate bias sweep. The normalized channel conductance (G d) characteristics we...

A set of GIS tools has been developed (Road Sediment Analysis Model, RSAM) to analyze and quantify the impacts of forest roads on forested watersheds. RSAM is organized into three modules. In the first module sediment production for each road segment is calculated from slope, length, road surface condition and road side drain vegetation. A GPS gathered road condition inventory provides surface ...

STUDY DESIGN Retrospective clinical study. PURPOSE To assess the diagnostic value of suction drain tip culture in patients undergoing primary posterior spine surgery. OVERVIEW OF LITERATURE To date, the diagnostic value of suction drain tip culture for predicting surgical site infection (SSI) has not been firmly established in orthopedic or spinal surgery. METHODS In total, 133 patients w...

Abstract In this work, we presented a comprehensive investigation of the trapping effect in GaN-based high-electron-mobility transistors (HEMTs) under negative gate-source voltage condition. The mechanisms OFF state were analyzed and behaviors characterized using pulsed measurements preliminarily. Specifically, transient drain-source curves certain filling condition monitored to reflect state. ...

Chest drain placement is a standard procedure for treating pneumothorax and pleural effusions and has a low complication rate. It is a safe and efficient procedure if image guidance is used. If the anatomic orientation is hampered and neither air nor fluids can be initially aspirated, more complex imaging than a chest x-ray is indicated to avoid major complications. We report the case of an 88-...

The soil around a drain well is traditionally divided into smeared zone and undisturbed zone with constant hydraulic conductivity. In reality, hydraulic conductivity of the soil changes continuously and it may not be always appropriate to approximate its distribution with two zones. In this study, the horizontal hydraulic conductivity of the soil is described by an arbitrary function of radial ...

The installation of deep drains is an engineering approach to remediate land salinised by the influence of shallow groundwater. It is a costly treatment and its economic viability is, in part, dependent on the lateral extent to which the drain increases biological productivity by lowering water tables and soil salinity (referred to as the drains' zone of benefit). Such zones may be determined b...