Desulfitobacterium hafniense is an anaerobic, low GC, Gram-positive spore-forming bacterium that shows considerable promise as a bioremediative competent population of sediments. Of particular relevance to its remediation capabilities are metal reduction, which changes the mobility and toxicity of metals, and chlororespiration, the ability to dechlorinate organic xenobiotics. Our work focuses o...

Covariance data are required to assess uncertainties in design parameters in several nuclear applications. The error estimation of calculated quantities relies on the nuclear data uncertainty information available in the basic nuclear data libraries, such as the US Evaluated Nuclear Data Library, ENDF/B. The uncertainty files in the ENDF/B library are obtained from the analysis of experimental ...

The Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC), which is associated with NASA's Earth Observing System Data and Information System (EOSDIS), provides access to datasets used in environmental research. As a data warehouse for NASA, the ORNL DAAC archives and distributes data from NASA's ground-based field experiments. In order to manage its large and diverse da...

The Spallation Neutron Source (SNS) diagnostic instruments at Oak Ridge National Laboratory are based on the Network Attached Device (NAD) concept. Each pickup or sensor has its own resources, such as networking, timing, data acquisition, and processing. NADs function independently thus reducing the brittleness inherent in tightly coupled systems. This paper describes our implementation of the ...

introduction accurate estimation of the absorbed dose in radiosensitive organs, located away from the target volume during radiotherapy, is one of the main reasons for the development of reference phantoms. the international commission on radiological protection (icrp) reference phantoms can provide a more realistic view of the human anatomy in comparison with the previously used mathematical p...

This paper discusses ongoing research at Oak Ridge National Laboratory (ORNL) to make computing clusters easier to use. Cluster administration, setup, and use is an active research area with many different components. Two systems for cluster control and administration, that have been experimented with at ORNL, are Managing Multiple Clusters (M3C) and Cluster Control GUI (C2G). M3C uses a Java S...

During the summer of 2006, I had the opportunity to participate in an internship through the U.S. Department of Energy (DOE) at Oak Ridge National Laboratory (ORNL). ORNL is the nations largest national laboratory that is funded by the DOE. ORNL is known best for developing the technology for the atomic bomb and was a classified area for many years. Today ORNL’s research spans all areas of scie...