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The Flux and Recovery of Bioactive Substances in the Surface Sediments of Deep Basins Off Southern California

Description: Sediment microbial community biomass and activity in Santa Monica Basin, a nearshore basin in the California Continental Borderland, were examined in October 1985, 1986 and 1987, May 1986, April 1987 and January 1990. Millimeter-scale ATP profiles and incubation of intact cores with {sup 3}H-adenine indicated a high-biomass interface microbial population in the low-oxygen central basin, which was absent in samples from the basin slope sediments. A majority of microbial activity and organic matt… more
Date: June 11, 1990
Creator: Jahnke, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Mathematical Model for Predicting the Probability of Acute Mortality in a Human Population Exposed to Accidentally Released Airborne Radionuclides. Final Report for Phase I of the Project: Early Effects of Inhaled Radionuclides

Description: The report presents a mathematical model for the purpose of predicting the fraction of human population which would die within 1 year of an accidental exposure to airborne radionuclides. The model is based on data from laboratory experiments with rats, dogs and baboons, and from human epidemiological data. Doses from external, whole-body irradiation and from inhaled, alpha- and beta-emitting radionuclides are calculated for several organs. The probabilities of death from radiation pneumonitis a… more
Date: June 1, 1980
Creator: Filipy, R. E.; Borst, F. J.; Cross, F. T.; Park, J. F.; Moss, O. R.; Roswell, R. L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Laboratories for the 21st Century: Best Practices; Energy Recovery in Laboratory Facilities (Brochure)

Description: This guide regarding energy recovery is one in a series on best practices for laboratories. It was produced by Laboratories for the 21st Century ('Labs 21'), a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy. Laboratories typically require 100% outside air for ventilation at higher rates than other commercial buildings. Minimum ventilation is typically provided at air change per hour (ACH) rates in accordance with codes and adopted design standards in… more
Date: June 1, 2012
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Automatic gas analysis system for continuous monitoring of oxygen and carbon dioxide exchange in terrestrial ecosystems. [Measurement of CO/sub 2/ production and O/sub 2/ consumption by small terrestrial vertebrates in natural habitat]

Description: An automatic, continuous flow, gas analysis system was designed to monitor metabolic rates of terrestrial vertebrates over relatively long periods of time, such as daily cycles, under field conditions in the absence of the investigator. The gas analysis system described in this report used an infrared absorption analyzer for carbon dioxide and a paramagnetic analyzer for oxygen. The simultaneous measurement of CO/sub 2/ production and O/sub 2/ consumption by an organism permitted the direct cal… more
Date: June 1, 1977
Creator: Randolph, J. C. & Rau, F. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Light on Respiration and Development of Photosynthetic Cells. Progress Report, September 1, 1975--June 1, 1976

Description: Adaptation and deadaptation of unicellular algal cells to a hydrogen metabolism may involve not only hydrogenase but also the site of entry of electrons from NADH. NADPH can also serve as an electron donor in a chloroplast preparation fortified with hydrogenase but the rate of photoevolution falls off rapidly perhaps due to competition with NADP for electrons. The evolution of H/sub 2/ with reduced pyridine nucleotide as electron donor is coupled to ATP formation. Evidence is presented that sol… more
Date: June 1, 1976
Creator: Gibbs, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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New Meteorlogical Data for Ventsar XL

Description: Every five years Savannah River National Laboratory (SRNL) generates an updated meteorological database to facilitate dosimetric calculations of accident and routine release scenarios for onsite and offsite populations. This information becomes the input of various environmental dosimetry codes run by the Environmental Dosimetry Group (EDG) at SRNL. The three most recent databases prior to the current one were completed for the time periods 1987-1991, 1992-1996, and 1997-2001. The current datab… more
Date: June 13, 2010
Creator: Foley, T. & Jannik, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Young organic matter as a source of carbon dioxide outgassing from Amazonian rivers

Description: Rivers are generally supersaturated with respect to carbon dioxide, resulting in large gas evasion fluxes that can be a significant component of regional net carbon budgets. Amazonian rivers were recently shown to outgas more than ten times the amount of carbon exported to the ocean in the form of total organic carbon or dissolved inorganic carbon. High carbon dioxide concentrations in rivers originate largely from in situ respiration of organic carbon, but little agreement exists about the sou… more
Date: June 23, 2005
Creator: Mayorga, E; Aufdenkampe, A K; Masiello, C A; Krusche, A V; Hedges, J I; Quay, P D et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Final technical report for DOE DE-FG02-02ER63472

Description: This document is the final report for DOE grant number DE-FG02-02ER63472: "The impact of enhanced nitrogen fixation on carbon sequestration: a reassessment of the inorganic carbon system in LNLC regions" to Patricia L. Yager at the University of Georgia School of Marine Programs. This project examined the inorganic carbon system associated with nitrogen fixation in the “low nutrient low chlorophyll” (LNLC) regions of the western tropical North Atlantic (WTNA) and subtropical Pacific Oceans. Tot… more
Date: June 27, 2007
Creator: Yager, Patricia L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Molecular Mechanism of Bacterial Attachment to Fe(III)-Oxide Surfaces

Description: To date, our studies have concentrated upon two aspects of the chemistry and architecture of the Shewanella outer membrane surface: the influence of terminal electron acceptor during anaerobic respiration, and the role that protein secretion systems play in determining the presence and chemistry of exopolymers. Using Shewanella oneidensis strain MR-1 and S. putrefaciens strain 200R as model organisms we have developed a microelectrophoresis approach to estimating cell mobility in solution over … more
Date: June 1, 2006
Creator: Neal, Andrew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Localized Plasticity in the Streamlined Genomes of Vinyl Chloride Respiring Dehalococcoides

Description: Vinyl chloride (VC) is a human carcinogen and widespread priority pollutant. Here we report the first, to our knowledge, complete genome sequences of microorganisms able to respire VC, Dehalococcoides sp. strains VS and BAV1. Notably, the respective VC reductase encoding genes, vcrAB and bvcAB, were found embedded in distinct genomic islands (GEIs) with different predicted integration sites, suggesting that these genes were acquired horizontally and independently by distinct mechanisms. A compa… more
Date: June 30, 2009
Creator: McMurdie, Paul J.; Behrens, Sebastien F.; Muller, Jochen A.; Goke, Jonathan; Ritalahti, Kirsti M.; Wagner, Ryan et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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An Integrative Approach to Energy Carbon and Redox Metabolism In Cyanobacterium Synechocystis

Description: The main objectives for the first year were to produce a detailed metabolic reconstruction of synechocystis sp.pcc6803 especially in interrelated arrears of photosynthesis respiration and central carbon metabolism to support a more complete understanding and modeling of this organism. Additionally, IG, Inc. provided detailed bioinformatic analysis of selected functional systems related to carbon and energy generation and utilization, and of the corresponding pathways functional roles and indivi… more
Date: June 30, 2003
Creator: Overbeek, Dr. Ross
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Integrative Approach to Energy, Carbon, and Redox Metabolism in the Cyanobacterium Synechocystis sp. PCC 6803. Special Report

Description: The main objectives for the first year were to produce a detailed metabolic reconstruction of synechocystis sp. PCC 6803 especially in interrelated areas of photosynthesis, respiration, and central carbon metabolism to support a more complete understanding and modeling of this organism. Additionally, Integrated Genomics, Inc., provided detailed bioinformatic analysis of selected functional systems related to carbon and energy generation and utilization, and of the corresponding pathways, functi… more
Date: June 30, 2003
Creator: Overbeek, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiological Source Terms for Tank Farms Safety Analysis

Description: This document provides Unit Liter Dose factors, atmospheric dispersion coefficients, breathing rates and instructions for using and customizing these factors for use in calculating radiological doses for accident analyses in the Hanford Tank Farms.
Date: June 27, 2000
Creator: COWLEY, W.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A model-data intercomparison of CO2 exchange across North America: Results from the North American Carbon Program Site Synthesis

Description: Our current understanding of terrestrial carbon processes is represented in various models used to integrate and scale measurements of CO{sub 2} exchange from remote sensing and other spatiotemporal data. Yet assessments are rarely conducted to determine how well models simulate carbon processes across vegetation types and environmental conditions. Using standardized data from the North American Carbon Program we compare observed and simulated monthly CO{sub 2} exchange from 44 eddy covariance … more
Date: June 1, 2011
Creator: Schwalm, C. R.; Williams, C. A.; Schaefer, K.; Anderson, R.; Arain, M. A.; Baker, I. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Savannah River Laboratory environmental transport and effects research. Annual report, 1974

Description: The principal objective of environmental transport research at the Savannah River Laboratory (SRL) is to develop, apply, adapt, use, test, and verify models that predict the directions and magnitude of ecosystem processes. Since an ecosystem is understood to be a complex ecological unit composed of physical, chemical, and biotic components interacting in the cycling and transport of matter and the flow of energy, the understanding of ecosystem processes demands integrated study by scientists of… more
Date: June 1, 1975
Creator: Crawford, T. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Inhalation Exposure Input Parameters for the Biosphere Model

Description: This analysis is one of the technical reports that support the Environmental Radiation Model for Yucca Mountain, Nevada (ERMYN), referred to in this report as the biosphere model. ''Biosphere Model Report'' (BSC 2004 [DIRS 169460]) describes in detail the conceptual model as well as the mathematical model and its input parameters. This report documents development of input parameters for the biosphere model that are related to atmospheric mass loading and supports the use of the model to develo… more
Date: June 5, 2006
Creator: Wasiolek, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Impacts of Mineralogy and Competing Microbial Respiration Pathways on the Fate of Uranium in Contaminated Groundwater

Description: This is a field-oriented project designed to elucidate the microbiological and geochemical factors controlling U(VI) reduction/immobilization in subsurface environments at the NABIR FRC. Efforts focused on acidic sediments, (1) to characterize the dominant minerals likely to limit U speciation, (2) to directly quantify microbial respiration processes controlling U subsurface chemistry, and (3) to identify and enumerate the responsible organisms. Results indicate that the activities and growth o… more
Date: June 1, 2003
Creator: Kostka, Joel E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of a remote vital signs sensor

Description: This paper describes the work at Sandia National Laboratories to develop sensors that remotely detect unique life-form characteristics, such as breathing patterns or heartbeat patterns. This paper will address the Technical Support Working Group`s (TSWG) objective: to develop a remote vital signs detector which can be used to assess someone`s malevolent intent. The basic concept of operations for the projects, system development issues, and the preliminary results for a radar device currently i… more
Date: June 1, 1997
Creator: Ladd, M. D.; Pacheco, M. S. & Rivas, R. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Overcoming Constraints to High-Yield Plantation-Grown Hardwoods in the Southeastern United States

Description: This project was comprised of the following four inter-related tasks: Task 1 Plantation Maintenance and Measurement--Data on dry weight productivity per tree and/or growth as measured by individual tree height and diameter at a specified height on the stem was determined at the end of each of five years corresponding to ages 2 through 6. Measurements of height and diameter were recorded once a month during the growing season on a subsample of four trees per clone per species per treatment combi… more
Date: June 26, 2008
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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