Fruits and Vegetables: Issues for Congress

Fruits and Vegetables: Issues for Congress

Date: April 15, 2002
Creator: Branaman, Brenda
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Fruits and Vegetables: Issues for Congress

Fruits and Vegetables: Issues for Congress

Date: July 11, 2002
Creator: Branaman, Brenda
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Fruits and Vegetables: Issues for Congress

Fruits and Vegetables: Issues for Congress

Date: September 4, 2002
Creator: Branaman, Brenda
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Fruits and Vegetables: Issues for Congress

Fruits and Vegetables: Issues for Congress

Date: May 29, 2002
Creator: Branaman, Brenda
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Fruits and Vegetables: Issues for Congress

Fruits and Vegetables: Issues for Congress

Date: October 24, 2002
Creator: Branaman, Brenda
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Fruits and Vegetables: Issues for Congress

Fruits and Vegetables: Issues for Congress

Date: November 14, 2002
Creator: Branaman, Brenda
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Fruits and Vegetables: Issues for Congress

Fruits and Vegetables: Issues for Congress

Date: January 27, 2003
Creator: Branaman, Brenda
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Fruits and Vegetables: Ongoing Issues for Congress

Fruits and Vegetables: Ongoing Issues for Congress

Date: November 13, 2000
Creator: Branaman, Brenda
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A study of the metal content of municipal solid waste. Final report

A study of the metal content of municipal solid waste. Final report

Date: January 1, 1998
Creator: Churney, K.L. & Domalski, E.S.
Description: Knowledge of the content of toxic components, so called pollutant precursors, in the municipal solid waste (MSW) stream is essential to development of the strategies for source reduction and reuse, recycling, composting and disposal. Data are scarce; trends in composition for any locality even more so. In a previous study the total and water soluble chlorine content of the components of municipal solid waste were determined from sampling studies at two sites, Baltimore County, MD, and Brooklyn, NY, each for a five day period. The total sulfur content of the combined combustible components was also determined. Because of the scarcity of data and synergistic effects, it seemed appropriate to determine the heavy metal content of the preceding material prior to its disposal. The metals chosen were the so-called priority pollutant metals (PPM): antimony, arsenic, beryllium, cadmium, chromium, copper, lead, mercury, nickel, selenium, silver, thallium, and zinc.
Contributing Partner: UNT Libraries Government Documents Department
Radionuclide concentrations in pinto beans, sweet corn, and zucchini squash grown in Los Alamos Canyon at Los Alamos National Laboratory

Radionuclide concentrations in pinto beans, sweet corn, and zucchini squash grown in Los Alamos Canyon at Los Alamos National Laboratory

Date: May 1, 1997
Creator: Fresquez, P.R.; Mullen, M.A.; Naranjo, L. Jr. & Armstrong, D.R.
Description: Pinto beans, sweet corn, and zucchini squash (Cucurbita pepo var. black beauty) were grown in a randomized complete-block field/pot experiment at a site that contained the highest observed levels of surface gross gamma radioactivity within Los Alamos Canyon (LAC) at Los Alamos National Laboratory. Soils as well as washed edible and nonedible crop tissues were analyzed for various radionuclides and heavy metals . Most radionuclides, with the exception of {sup 3}H and {sup tot}U, in soil from LAC were detected in significantly higher concentrations (p <0.01) than in soil collected from regional background (RBG) locations. Similarly, most radionuclides in edible crop portions of beans, squash, and corn were detected in significantly higher (p <0.01 and 0.05) concentrations than RBG. Most soil-to-plant concentration ratios for radionuclides in edible and nonedible crop tissues from LAC were within the default values given by the Nuclear Regulatory Commission and Environmental Protection Agency. All heavy metals in soils, as well as edible and nonedible crop tissues grown in soils from LAC, were within RBG concentrations. Overall, the total maximum net positive committed effective dose equivalent (CEDE)--the CEDE plus two sigma for each radioisotope minus background and then all positive doses summed--to a hypothetical 50-year resident ...
Contributing Partner: UNT Libraries Government Documents Department
Life-cycle analysis of alternative aviation fuels in GREET

Life-cycle analysis of alternative aviation fuels in GREET

Date: July 23, 2012
Creator: Elgowainy, A.; Han, J.; Wang, M.; Carter, N.; Stratton, R.; Hileman, J. et al.
Description: The Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) model, developed at Argonne National Laboratory, has been expanded to include well-to-wake (WTWa) analysis of aviation fuels and aircraft. This report documents the key WTWa stages and assumptions for fuels that represent alternatives to petroleum jet fuel. The aviation module in GREET consists of three spreadsheets that present detailed characterizations of well-to-pump and pump-to-wake parameters and WTWa results. By using the expanded GREET version (GREET1{_}2011), we estimate WTWa results for energy use (total, fossil, and petroleum energy) and greenhouse gas (GHG) emissions (carbon dioxide, methane, and nitrous oxide) for (1) each unit of energy (lower heating value) consumed by the aircraft or (2) each unit of distance traveled/ payload carried by the aircraft. The fuel pathways considered in this analysis include petroleum-based jet fuel from conventional and unconventional sources (i.e., oil sands); Fisher-Tropsch (FT) jet fuel from natural gas, coal, and biomass; bio-jet fuel from fast pyrolysis of cellulosic biomass; and bio-jet fuel from vegetable and algal oils, which falls under the American Society for Testing and Materials category of hydroprocessed esters and fatty acids. For aircraft operation, we considered six passenger aircraft classes and four freight aircraft classes ...
Contributing Partner: UNT Libraries Government Documents Department
Evaluation of the use of sludge containing plutonium as a soil conditioner for food crops

Evaluation of the use of sludge containing plutonium as a soil conditioner for food crops

Date: September 17, 1975
Creator: Myers, D.S.; Silver, W.J.; Coles, D.G.; Lamson, K.C.; McIntyre, D.R. & Mendoza, B.
Description: An experiment was conducted to assess the potential hazard associated with the use of sludge containing plutonium as a soil conditioner for food crops. Conditions were chosen that would maximize exposure to the $sup 239$Pu in the sludge through resuspension and in plant content and thus approximated the maximum potential hazards due to the inhalation and ingestion pathways. The estimated 50-year radiation doses to the pulmonary region of the lung, bone, and liver based on the results of the inhalation experiment are 6 x 10$sup -4$ rem, 1.2 x 10$sup -3$ rem, and 0.55 x 10$sup -4$ rem, respectively. Similarly, the 50- year radiation doses attributable to ingestion of the sludge-grown vegetables were 2.2 x 10$sup -5$ rem to the bone and 1.5 x 10$sup -5$ rem to the liver. Thus, the inhalation pathway is the more critical of the two. The maximum permissible annual doses to the lungs, bone, and the liver for a member of the general public are 1.5, 3.0, and 1.5 rem, respectively. Thus, the maximum credible 50-year lung, bone, and liver dose commitments associated with the use of the $sup 239$Pu-contaminated sludge as a soil conditioner are approximately 4.0 x 10$sup -2$ percent of the ...
Contributing Partner: UNT Libraries Government Documents Department
Current radiological status of Utirik Atoll

Current radiological status of Utirik Atoll

Date: August 1, 1998
Creator: Robison, W L
Description: A preliminary radiological survey was conducted at Utirik Atoll in 1978 as part of the Northern Marshall Islands Radiological Survey (NMIRS). A dose assessment based on these limited data indicated a relatively low dose of about 0.12 mSv to people living on Utirik in 1978 (Robison et al., 1982). A much more detailed radiological survey was conducted in April of both 1993 and 1994. Aerial photos of the islands of Utirik Atoll were taken as part of the 1978 NMIRS. The sampling grids for the 1993 and 1994 surveys are shown overlaid on these aerial photos in Figures 1, 2, 3, and 4. External gamma measurements and a collection of either drinking coconuts or copra coconuts were made at each location. Pandanus, breadfruit, lime, and banana were collected where available. Ground water was collected in 1993/94 from four wells on Utirik Island and two wells on Aon Island. Surface soil and soil profiles were collected at some of the grid points on each of the islands at the atoll in 1993/94. A comparison of the number of samples collected in 1978 and 1993/94 are shown in Table 1. A detailed listing of the samples collected in the 1993/94 radiological survey ...
Contributing Partner: UNT Libraries Government Documents Department
Uptake of 137Cs by Leafy Vegetables and Grains from Calcareous Soils

Uptake of 137Cs by Leafy Vegetables and Grains from Calcareous Soils

Date: April 19, 2004
Creator: Robison, W; Hamilton, T; Conrado, C & Kehl, S
Description: Cesium-137 was deposited on Bikini Island at Bikini Atoll in 1954 as a result of nuclear testing and has been transported and cycled in the ecosystem ever since. Atoll soils are of marine origin and are almost pure CaCO{sub 3} with high concentrations of organic matter in the top 40 cm. Data from previous experiments with mature fruit trees show very high transfer factors (TF's), [Bq g{sup -1} plant/ Bq g{sup -1} soil, both in dry weight] into fruits from atoll calcareous soil. These TF's are much higher than reported for continental, silica-based soils. In this report TF's for 5 types of leafy vegetable crops and 2 types of grain crops are provided for use in predictive dose assessments and for comparison with other data from other investigators working with other types of soil in the IAEA CRP ''The Classification of Soil Systems on the Basis of Transfer Factors of Radionuclides from Soil to Reference Plants''. Transfer factors for plants grown on calcareous soil are again very high relative to clay-containing soils and range from 23 to 39 for grain crops and 21 to 113 for leafy vegetables. Results from these experiments, in this unique, high pH, high organic content, ...
Contributing Partner: UNT Libraries Government Documents Department