For better design and optimization of the heat exchanger (HX), forced convective transfer flow characteristics supercritical carbon dioxide (SCO2) in a water-cooled experimental counter-flow tube-in-tube HX were studied numerically with three-dimensional Reynolds-averaged Navier-Stokes equations shear stress transport (SST) turbulence model by using computational fluid dynamics method ANSYS CFX...

A graphics calculator may influence the curriculum in three kinds of ways: offering new opportunities for teaching and learning, providing new ways of performing mathematical procedures, and suggesting changes of emphasis and content in the curriculum. Illustrations of these for the senior school probability curriculum are suggested, focussing on simulation, probability distributions and stocha...

In this research, chitosan–magnetite composites (CS-MNPs) were successfully synthesized using a rapid and easy technique. The materials characterized by FTIR, XRD, EDX, TEM, VSM, BET methods. removal of the antibiotics ciprofloxacin (CFX) levofloxacin (LFX) from aqueous solutions CS-MNPs adsorbent was investigated. influencing factors in single adsorption system studied, including pH (1–11), in...

Lithium-carbon monofluoride (Li/CF x ) D-sized battery cells discharged at very low rates (C/1800) were found to deliver inconsistent capacities. These effects be absent as the discharge rate was increased C/600. Destructive physical analysis of C/1800 confirmed corrosion, manifesting preferential utilization Li anode around copper current collector, discoloration remaining excess Li, and more ...

Abstract Using the Design of Experiments methodology ( Response-Surface Methodology and Derringer's Desirability Function ), a simple, fast robust RP-HPLC method was developed for analysis enrofloxacin (EFC), its impurity A (fluoroquinolonic acid, FQ) B (ciprofloxacin, CPX). Gradient elution samples performed on Zorbax Eclipse XDB C18 column (150 × 4.6 mm, 3.5 μm) with mobile phase consisting 3...