A nozzle position control for the road surface decontaminating System
The Great East Japan Earthquake that occurred on March 11, 2011 resulted in the explosion of the TEPCO Fukushima 1st Nuclear Power Plant and the global dispersion of a large quantity of radioactive substances. A high radiation dose was particularly recorded in Fukushima prefecture several weeks after the accident, although the level is presently sufficiently low. However, considering that the adverse effects of low but extended exposure to radiation are yet to be negated, there is the urgent need for further decontamination. In our study, we focused on the efficient decontamination of radioactive substances in residential areas, for which we propose a high-pressure water jet system for washing road surfaces. The system differs from conventional systems of its type that were initially designed for use in the immediate environment of the nuclear reactors of the TEPCO Fukushima 1st Nuclear Power Plant. The proposed system consists of multiple washing, transporter, and server robots. The washing robots decontaminate the road surface using high-pressure water jets and are transported between washed and unwashed areas by the transporter robots. The server robots supply the water used for washing and absorb the polluted water together with ground dust. In this paper, we describe the concept of the system and present the results of decontamination experiments. Particular attention is given to the washing robot and its mechanism and control method. The results of the integration of the washing robot in an experimental system confirmed the feasibility of the proposed system.
Washing operation of a road surface washing mechanism for decontaminating radioactive substances
The Great East Japan Earthquake that occurred on March 11, 2011 resulted in the explosion of the TEPCO Fukushima 1st Nuclear Power Plant and the global dispersion of a large quantity of radioactive substances. A high radiation dose was particularly recorded in Fukushima prefecture several weeks after the accident, although the level is presently sufficiently low. However, considering that the adverse effects of low but extended exposure to radiation are yet to be negated, there is the urgent need for further decontamination. In our study, we focused on the efficient decontamination of radioactive substances in residential areas, for which we propose a high-pressure water jet system for washing road surfaces. The system differs from conventional systems of its type that were initially designed for use in the immediate environment of the nuclear reactors of the TEPCO Fukushima 1st Nuclear Power Plant. The proposed system consists of multiple washing, transporter, and server robots. The washing robots decontaminate the road surface using high-pressure water jets and are transported between washed and unwashed areas by the transporter robots. The server robots supply the water used for washing and absorb the polluted water together with ground dust. In this paper, we describe the concept of the system and present the results of decontamination experiments. Particular attention is given to the washing robot and its mechanism and control method. The results of the integration of the washing robot in an experimental system confirmed the feasibility of the proposed system.
Inquiring "Tree of Life" at Home: Persian Classic Literature in English Classes.
The recent decades of English Language Teaching (ELT) appear to be particularly concerned with the marginalisation caused by English linguistic, cultural, and academic colonisation and imperialism. Bold footprints of this academic monopoly can be seen in the wide incorporation of abridged or unabridged British and American literary works in foreign language settings. Such literary products are often legitimised as authentic materials authored by native speakers. Inspired by the idea of incorporating non-native literature and translated first language literature into English classes, the authors of this article sought to explore the possibilities of opening spaces for English translations of Persian classic works of literature in English as foreign language classrooms and tracing the language events that unfolded as a result of incorporating such literature. The participants of this two-semester long action research project were non-English major Iranian female university students, majoring in various fields at Alzahra University, Tehran, Iran. The sense of familiarity the students had with such national literary works led to the emergence of language instances lightened by sparks of virtue, vision, life and art.