The present work gives a methodology for assessing radiological concentration of ¹³¹I, ¹³²I, ¹³³I, ¹³⁴I, and ¹³⁵I due to a hypothetical accident of TRIGA Mark-II research Reactor at AERE, Savar, Bangladesh. The concentrations were estimated through different pathways like ingestion of vegetation, milk, and meat from air and ground deposition. The maximum air concentrations for all 16 directions were found at 110 m distance from the core of the reactor and it was found to be highest in the southern (S) direction. The maximum ground concentration occurred immediately just after the accident in different directions. In all pathways, the most concentration was found to be in S-direction. The concentrations in vegetation of ¹³¹I, ¹³³I, ¹³⁵I were significant, while no concentrations of 132I and 134I were observed. The concentration in vegetation for ¹³¹I was found to be highest than all other isotopes of iodine. The concentrations of ¹³³I were found to be higher and concentrations of ¹³⁴I were observed to be lower in both milk and meat compared to other radio isotopes of iodine. In the case of a radiological accident, the results of the present study will be a valuable guide for adopting radiological safety measures for radiation protection against the ingestion of vegetables, milk and meat from around the research reactor at AERE, Savar, Bangladesh

Cooperative communication is a novel class of wireless communication

In this paper, a comprehensive study has been made on performance assessment of a single relayed cooperative wireless communication system under implementation of OFDM aided MIMO technology. This paper provides a new insight on system performance with proposed STBC encoded MIMO-OFDM radio interface technology, four channel equalization techniques (ZF, MMSE, ZF-SIC and MMSE-SIC) and three digital modulation schemes (BPSK, QPSK and QAM). Simulation results show that the STBC encoded single relayed MIMO-OFDM cooperative wireless communication system with BPSK and MMSE-SIC outperforms as compared to other digital modulations and channel equalization schemes on scrambled voice frequency signal transmission.

An attempt has been made in the work to assess radiological dose due to the deposition of 131

No abstract