BACKGROUND/AIMS Continuous renal replacement therapy (CRRT) is commonly used for critically ill patients with acute kidney injury. During treatment, a slow dialysate flow rate can be applied to enhance diffusive solute removal. However, due to the lack of the rationale of the dialysate flow configuration (countercurrent or concurrent to blood flow), in clinical practice, the connection settings...

Here, we collect two parts of a research project on the pedestrian flow modeling. Rapid growth in the volume of public transport and the need for its reasonable, efficient planning have made the description and modeling of transport and pedestrian behaviors as important research topics in the past twenty years. First, we present a macroscopic model for the pedestrian flow based on continuum mec...

background & aims of the study: heavy metals discharge to environment is a worldwide problem growing in scale. when they accumulate in the environment and in food chains, they can profoundly disrupt biological processes. peganum harmala seeds (phs) was used as a bio-sorbent, using a continuous system for removing pb2+, co2+, ni2+ and cu2+ ions from aqueous solutions. materials and methods: phs ...

We prove that a continuous flow with isolated critical points on an arbitrary 2-manifold is determined up to topological equivalence by its separatrix configuration.

There are several flow configurations for RO that allow the user to get the most out of the system. This paper will cover a few of the techniques used in RO design to optimize system performance. These techniques include the use of concentrate staging and concentrate recirculation to increase recovery, permeate staging to attain ultrapure standards of separation, and permate throttling and inte...

The K-II centrifuge (1-3) was designed for large-scale virus isolation using the continuous-sample-flow-with-banding technique (CFB) (4--8), and has been used successfully for the commercial production of influenza vaccine (9, 10). The rotor was originally designed for dynamic unloading; however, the resolution obtained was less than expected. The gradient has therefore been allowed to reorient...

Use of nanotechnology has proven to be a promising approach toward remediation of all phases of environment. The aim of this work is to investigate the effects of different parameters on using iron III oxide nanoparticles in a continuous flow configuration for the removal of Cd2+ ionsfrom contaminated soils. Also selective sequential extraction tests are carried out to evaluate the nanoparticle...