Teacher preparation programs commonly use observational instruments to assess the progress and the exit performances of teacher candidates. However, while these instruments have been described and several have been studied for effectiveness,the field lacks a close examination of how they position participants: teacher candidates, K-12 pupils, and teacher educators. This article closely examine…
Abstract Activated carbons have been prepared from petroleum cokes by the combination of a chemical treatment with HClO4 or H2O2 and a chemical activation with KOH at a constant KOH/coke ratio of 3/1. The influence of different chemical treatments on the properties of the activated carbon precursors and final carbons activated with KOH was invested by using XRD, FTIR, and BET techniques. XRD r…
Abstract. In order to research the fire characteristic under natural ventilation conditions in tunnels with roof openings, full-scale experiment of tunnel fire is designed and conducted. All the experimental data presented in this paper can be further applied for validation of numerical simulation models and reduced-scale experimental results. The physical model of tunnel with roof openings …