Missouri University, a recipient of a U.S. Department of Energy Radiochemistry Education Award Program (REAP) grant in 1999, has significantly expanded its education and research mission in radiochemistry. While MU had a viable radiochemistry program through existing faculty expertise and the utilization of the Missouri University Research Reactor, the REAP award allowed MU to leverage its resources in significantly expanding capabilities in radiochemistry. Specifically, the grant enabled the: (1) hiring of a new faculty member in actinide radiochemistry (Dr. Paul Duval); (2) support of six graduate students in radiochemistry; (3) purchase of new radiochemistry laboratory equipment; (4) more extensive collaboration with DOE scientists through interactions with faculty and graduate students, and (5) revised radiochemical curriculum (joint courses across disciplines and new courses in actinide chemistry). The most significant impact of this award has been in encouraging interdisciplinary education and research. The proposal was initiated by a joint effort between Nuclear Engineering and Chemistry, but also included faculty in biochemistry, radiology, and molecular biology. Specific outcomes of the REAP grant thus far are: (1) increased educational and research capabilities in actinide chemistry (faculty hire and equipment acquisition); (2) increased integration of biochemistry and radiochemistry (e.g., radiochemical analysis of uranium speciation in biological systems); (3) stronger interdisciplinary integration of molecular biology and radiochemical sciences (alpha-emitters for treating cancer); (4) new and more extensive interactions with national laboratory facilities (e.g., student internships at LANL and LLBL, faculty and lab scientist exchange visits, analytical measurements and collaboration with the Advanced Photon Source), and (7) new research funding opportunities based on REAP partnership.
Authors:S. Landsberger, E. Strassberg and K. Schmidt
In this paper, a description is made of the survey that was undertaken, for the first time, about the situation of radiochemistry activities in the Region of Latin America, comprising twenty countries from South America, Central America and the Caribbean. It became clear from this study that very strong differences exist between the countries and that most of the nuclear facilities in operation, such as nuclear reactors, hot cells, radiochemical laboratories and cyclotrons are concentrated in seven countries, accompanied by research and educational activities. A detailed study of the situation and trends in the Latin American countries is presented, as regards teaching and other activities related to Radiochemistry, as well as a series of suggestions for preservation of knowledge in the field.
210Po and 210Pb concentrations have been determined in 58 cigar brands manufactured in 11 countries. Cuban and American cigars showed the lowest 210Po content. The mean levels of 210Po in Brazilian, European and Dominican cigars were almost identical and somewhat lower than the levels observed for cigars from other Latin American countries. Cuban, American and European cigars contained low levels of 210Pb. Cigars from the remaining countries contained twice as much 210Pb. The mean 210Po/210Pb ratio showed an excess of polonium. In the case of a one cigar-a-day smoker, the calculated annual absorbed dose due to 210Po is -16 mGy.
Authors:M. P. Felicissimo, J. L. Peixoto, M. S. Barbosa, G. Demortier, J.-J. Pireaux and U. P. Rodrigues-Filho
The purpose of this study was to investigate by PIXE and PIGE the pottery from two archaeological sites located near the Brazil-Bolivia
border in Pantanal, an area of natural preservation. The region was inhabited by ancient Amerindian tribes long before the
Latin America colonization period and a deep understanding of their environment, cultural attributes and interconnections
can only be achieved based on the study of archaeological findings. Multivariate statistical procedures were used to determine
similarities and correlations between the analyzed samples and to indicate possible sources of raw material provenience. The
results showed that traces of Cr, Cu and Ti and Na/Si and Mg/Si counting ratios were important to distinguish sherds from
the archaeological sites MS-CP-71 and MS-CP-61.
Much concern has been expressed lately about the decline of teaching and research activities in radiochemistry in many countries,
as was discussed in an IAEA Technical Meeting in Antalya, Turkey, in 2002, and also at MTAA-11 in Guildford, UK. In the IAEA
meeting, a survey was presented about the current situation in different regions of the world (Eastern Europe, East and West
Asia, Africa, North America and Latin America) by experts of each region. In the case of Brazil, which has nuclear research
reactors and also cyclotrons in operation, the teaching and research activities in radiochemistry are concentrated in the
three main institutes of the Brazilian Nuclear Energy Commission, in the University of São Paulo and in other universities,
in different regions of the country. In the present paper, a closer look is given to the radiochemistry teaching and research
activities that are being conducted nowadays in Brazil, comprising: number of radiochemistry courses and students being formed,
main research areas being conducted, as well as research and production of radioisotopes for nuclear medicine, using nuclear
reactors and cyclotrons.
We are just about at the end of this year, and my kind responsibility is to summarize the most important events of 2011. May I start with a Latin proverb “Panta rhei”, which means everything is changing. This is what has happened with the
Authors:Michael L. Hobbs, James T. Nakos and Patrick D. Brady
accounted for in the current study using smart sampling techniques such as Latin Hypercube Sampling (LHS) [ 8 ].
Measurements of thermal physical properties at elevated temperature are confounded when materials decompose. Unsolved challenges at these