We examine the gravity-driven flow of thin films viscous fluid power-law rheology, lubricated by another from below. Such flows are relevant to a range geophysical and industrial settings, including ice sheets fast-flowing streams below layer subglacial till. model both layers using lubrication theory in two-dimensional axisymmetric limit which vertical shear provides dominant resistance flow. ...

This paper explores the application of sustainable nature-based solutions as an alternative to conventional grey infrastructure for managing waterways in city Zagreb, Croatia. The has extensive network canalised urban streams, some which are closed, flowing into City’s sewage system and Sava River. However, these open watercourses not fully utilised due inadequate management blue infrastructure...

C i c ^ A one-dimensional theory based upon fundamental flow relationships ^ is presented for analyzing the behavior of one or more gas streams flowing MM through a single nozzle. This conpound-coropressible flow theory shows that f^ the behavior of each stream is influenced by the presence of the other ^^ streams. The theory also shows that the behavior of coiTpound--coiTpressible flow is pred...

XML is rapidly becoming a standard for data exchange on the Internet. While XML’s document management roots have led many to focus on querying and processing of large documents, we believe much XML data will be in the form of streams. One can envision streams of XML data flowing throughout the Internet: a stream of stock quotes or minute-by-minute updates on positions of a fleet of vehicles one...

Large woody debris (LWD: > 10 cm diameter and > 1 m in length) in stream channels of forested regions in North America is an essential ecosystem component. This article summarizes information from the literature on the spatial and temporal variability of LWD abundance, distribution and age; the processes of LWD delivery and elimination; and the influence of LWD on material retention, habitat fo...

Virtual Private Networks (VPNs) provide the security and isolation properties of private networks, but at lower costs made possible by using a shared infrastructure such as the Internet. VPNs use point-to-point tunnels to create a secure overlay network, with every tunnel being pre-configured to encrypt, compress, and/or authenticate traffic. Once the tunnels are created such properties are mai...

An experimental study of scalar mixing in a laminar vortex is presented for vortices generated between two gas streams flowing parallel to each other in a rectangular flow channel. An isolated line vortex is initiated on demand by momentarily increasing one stream velocity in relation to the other using an electromagnetically actuated piston. The temporal piston motion profile is tailored to ge...

Rapidly-flowing ice streams are an important mechanism through which ice sheets lose mass, and much work has been focussed on elucidating the processes that increase or decrease their velocity. Recent work using standard inverse methods has inferred previously-unrecognised regular patterns of high basal shear stress (‘sticky spots’ >200 kPa) beneath a number of ice streams in Antarctica and Gre...

Observations of material and cellular systems in response to time-varying chemical stimuli can aid the analysis of dynamic processes. We describe a microfluidic "chemical signal generator," a technique to apply continuously varying chemical concentration waveforms to arbitrary locations in a microfluidic channel through feedback control of the interface between parallel laminar (co-flowing) str...