Furrow Flow Measurement Accuracy

Furrow geometry nnder surge and continuous flow

Accuracy of xenon CT measurement of cerebral blood flow.

In recent years, quantitative determination of cerebral blood flow (CBF) by xenon-enhanced CT has become an increasingly important research and clinical tool. Concurrently, the possibility that inhalation of stable xenon in the concentrations required for this procedure might itself alter CBF also has received increasing attention. Several studies [1-6] have examined this problem by using vario...

Umbilical venous blood flow measurement: accuracy and reproducibility.

Umbilical venous blood flow could be considered a direct and physiological measurement of vascular placental function, representing the quantity of oxygen and nutrients reaching the fetus. The advent of high-technology ultrasound and pulsed Doppler has overcome some of the limitations of early studies. Indeed, Doppler measurement of umbilical venous blood flow has been found to be accurate when...

Cortical flow aligns actin filaments to form a furrow

Cytokinesis in eukaryotic cells is often accompanied by actomyosin cortical flow. Over 30 years ago, Borisy and White proposed that cortical flow converging upon the cell equator compresses the actomyosin network to mechanically align actin filaments. However, actin filaments also align via search-and-capture, and to what extent compression by flow or active alignment drive furrow formation rem...

Surface Seal Influence on Surge Flow Furrow Infiltration

The interactive influence of furrow surface seal formation and surge irrigation (intermittent flow) on furrow infiltration into a Portneuf silt loam soil was measured with a recirculating infiltrometer. When the formation of a surface seal was prevented by a layer of cheesecloth laid on the furrow perimeter, flow interruption increased furrow bed bulk density by 100 kg/m 3 and decreased infiltr...