Radiometric and mass spectrometric analyses of Cs contamination in the environment can reveal the location of Cs emission sources, release mechanisms, modes of transport, prediction of future contamination migration, and attribution of contamination to specific generator(s) and/or process(es). The Subsurface Disposal Area (SDA) at Idaho National Laboratory (INL) represents a complicated case study for demonstrating the current capabilities and limitations to environmental Cs analyses. (137)Cs distribution patterns, (135)Cs/(137)Cs isotope ratios, known Cs chemistry at this site, and historical records enable narrowing the list of possible emission sources and release events to a single source and event, with the SDA identified as the emission source and flood transport of material from within Pit 9 and Trench 48 as the primary release event. These data combined allow refining the possible number of waste generators from dozens to a single generator, with INL on-site research and reactor programs identified as the most likely waste generator. A discussion on the ultimate limitations to the information that (135)Cs/(137)Cs ratios alone can provide is presented and includes (1) uncertainties in the exact date of the fission event and (2) possibility of mixing between different Cs source terms (including nuclear weapons fallout and a source of interest).
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/es5058852 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An In-Depth Analysis of the State Laws That License International Medical Graduates Without American Residency Training.
J Surg Res
January 2025
Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, Texas. Electronic address:
International medical graduates (IMGs) have been integral to the United States (US) healthcare system and have helped tackle physician shortages for over a century. Current data suggest that by 2030, almost half the states will suffer from physician shortage and estimate a deficit of almost 139,000 physician jobs nationally. These numbers raise concern and call for innovative strategies to mitigate the potential problem.
View Article and Find Full Text PDFInfluence of Process Parameter and Build Rate Variations on Defect Formation in Laser Powder Bed Fusion SS316L.
Materials (Basel)
January 2025
Mechanical and Aerospace Engineering Department, Utah State University, Logan, UT 84322-4130, USA.
Laser powder bed fusion (LPBF) is an additive manufacturing process that has gained interest for its material fabrication due to multiple advantages, such as the ability to print parts with small feature sizes, good mechanical properties, reduced material waste, etc. However, variations in the key process parameters in LPBF may result in the instantiation of porosity defects and variation in build rate. Particularly, volumetric energy density (VED) is a variable that encapsulates a number of those parameters and represents the amount of energy input from the laser source to the feedstock.
View Article and Find Full Text PDFA review of the current status of biological effects of plant-derived therapeutics in breast cancer.
Mol Biol Rep
January 2025
Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, 570015, India.
Phytochemicals are bioactive secondary plant metabolites found in high concentrations in fruits, grains, and vegetables. Recent studies provide evidence of usage of plant-based diets rich in phytochemicals and their corelation to reduction in cancer incidence. Several phytochemicals have demonstrated effectiveness as chemotherapeutic agents against various cancers, including breast cancer.
View Article and Find Full Text PDFSociodemographic Factors Associated with Purchasing Frozen, Fresh, Canned, and Dried Produce in a Nationally Representative Sample of United States Households.
Curr Dev Nutr
January 2025
Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, United States.
Background: Frozen fruits and vegetables (FV) are convenient, cost-effective, reduce food waste, and can be just as nutritious as their fresh counterparts. Despite these numerous advantages, it is unclear which consumer segments are more likely to purchase frozen FV, especially compared with fresh, canned, or dried FV, which could help inform targeted nutrition education interventions.
Objective: The objective of this study is to explore sociodemographic factors associated with increased or decreased odds of purchasing frozen, fresh, canned, and dried FV in a nationally representative sample.
Fatal interactions: pneumonia in bighorn lambs following experimental exposure to carriers of .
J Clin Microbiol
January 2025
Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, Washington, USA.
We hypothesized that bighorn sheep ewes with chronic nasal carriage are the source of infection that results in fatal lamb pneumonia. We tested this hypothesis in captive bighorn ewes at two study facilities over a 5-year period, by identifying carrier ewes and then comparing lamb fates in groups that did (exposed pens) or did not (non-exposed pens) include one or more carrier ewes. Most (23 of 30) lambs born in exposed pens, but none of 11 lambs born in non-exposed pens, contracted fatal pneumonia.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!