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Microscopy and Elemental Analysis in Tissue Samples Using Computed Microtomography With Synchrotron X-Rays

Description: The initial development shows that CMT using synchrotron x-rays can be developed to ..mu..m spatial resolution and perhaps even better. This creates a new microscopy technique which is of special interest in morphological studies of tissues, since no chemical preparation or slicing of the sample is necessary. The combination of CMT with spatial resolution in the ..mu..m range and elemental mapping with sensitivity in the ppM range results in a new tool for elemental mapping at the cellular leve… more
Date: January 1, 1988
Creator: Spanne, P. & Rivers, M. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Darkling beetle populations (Tenebrionidae) of the Hanford site in southcentral Washington

Description: This 3-yr study documents the taxonomic composition, relative abundance, and seasonal distribution of darkling beetles occupying the Hanford Site in southcentral Washington. A taxonomic key and species diagnosis are provided to assist in identification by the nonspecialist. Analysis of food plant availability and selection serves to identify transfer pathways through beetle populations and permits construction of food web diagrams depicting the flow of materials through the darkling beetle comp… more
Date: February 1, 1978
Creator: Rogers, L. E.; Woodley, N.; Sheldon, J. K. & Uresk, V. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutron-induced mutation experiments. Progress report, March 1, 1977--February 28, 1978. [Drosophila female gonial cell exposure]

Description: Experiments have been carried out to study the relative mutagenic effectiveness for Drosophila female germ cells of neutrons of different energies employing X-linked recessive lethal and specific locus mutation tests. The energies and doses employed to date to study X-linked lethals are 0.43 MeV (500, 1000, 1500, 1900 R (in progress)), 0.68 MeV (250, 500, 1000, 1500 R), 2 MeV (250, 500, 1000, 1500, 2000 R), 6 MeV (250, 500, 1500, 3000 R) and 15 MeV (250, 500, 1000, 1500, 3000 R). 0.43-MeV neutr… more
Date: November 1, 1977
Creator: Abrahamson, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Genetic effects of low x-ray doses. Progress report, October 1, 1976--September 30, 1977. [In Drosophila]

Description: A linear-quadratic model of dose-kinetics is proposed for x-ray induced recessive lethal mutations in oogonia of Drosophila. From this it should follow that at higher total doses fractionation treatments should give a lower yield of mutations than an equivalent acute exposure. A dose of 6000 R, given acutely and in 3 different fractionation regimes gave results in the expected direction for 2 x 3000 R, and a significant decrease for 3 x 2000 R and for 4 x 1500 R fractionations.
Date: September 1, 1977
Creator: Abrahamson, S. & Meyer, H.U.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Molecular mechanisms of mutagenesis determined by the recombinant DNA technology

Description: A study of the alteration of the DNA in the mutant gene can determine mechanisms of mutation by distinguishing between mutations induced by transition, transversion, frameshifts of a single base and deletions involving many base pairs. The association of a specific pattern of response with a mutagen will permit detecting mutants induced by the mutagen with a reduced background by removing mutations induced by other mechanisms from the pool of potential mutants. From analyses of studies that hav… more
Date: January 1, 1985
Creator: Lee, W.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiation cytogentics of the yellow-fever mosquito Aedes aegypti and the plant genus Collinsia. Final report, April 1967--September 1977

Description: The major objectives of the project on Aedes aegypti, which is one of the most important disease vectors of man, were to study the cytogenetic effects of radiation and certain chemical mutagens, the genetics of radiation-induced chromosomal rearrangements with particular attention to reciprocal translocations, and the possibility of using translocations for genetic control of natural populations. Results reported on work done during the years 1967 and 1977 show these objectives have been mostly… more
Date: January 1, 1977
Creator: Rai, K.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cadmium resistance in Drosophila: a small cadmium binding substance

Description: A small cadmium-binding substance (CdBS) has been observed in adult Drosophila melanogaster that were raised for their entire growth cycle on a diet that contained 0.15 mM CdCl/sub 2/. Induction of CdBS was observed in strains that differed widely in their sensitivity of CdCl/sub 2/. This report describes the induction of CdBS and some of its characteristics. 17 refs., 4 figs., 1 tab.
Date: January 1, 1985
Creator: Jacobson, K.B.; Williams, M.W.; Richter, L.J.; Holt, S.E.; Hook, G.J.; Knoop, S.M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Geographic analysis of thermal equilibria: a bioenergetic model for predicting thermal response of aquatic insect communities. Progress report, July 1, 1979-June 30, 1980

Description: This report summarizes the first 9 months of field and laboratory work to test our central hypothesis. Five river systems were selected for intensive studies on insect growth, metabolism, and fecundity as well as determination of community structure for distinct assemblages of insect species exploiting various trophic and habitat resources. Laboratory studies were initiated to test the relative importance of temperature and food quality on growth, size, and fecundity of insects. Our project is … more
Date: April 1, 1980
Creator: Vannote, R L & Sweeney, B W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Harvester ant bioassay for assessing hazardous chemical waste sites. [Pogonomyrmex owhyeei]

Description: A technique was developed for using harvester ants, Pogonomyrmex owhyeei, in terrestrial bioassays. Procedures were developed for maintaining stock populations, handling ants, and exposing ants to toxic materials. Relative toxicities were determined by exposing ants to 10 different materials. These materials included three insecticides, Endrin, Aldrin, and Dieldrin; one herbicide, 2,4-D; three complex industrial waste residuals, wood preservative sludge, drilling fluid, and slop oil; and three … more
Date: May 1, 1985
Creator: Gano, K. A.; Carlile, D. W. & Rogers, L. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

RBE (relative biological effectiveness) of tritium beta radiation to gamma radiation and x-rays analyzed by both molecular and genetic methods

Description: The relative biological effectiveness (RBE) of tritium beta radiation to /sup 60/Co gamma radiation was determined using sex-linked recessive lethals (SLRL) induced in Drosophila melanogaster spermatozoa as the biological effect. The SLRL test, a measure of mutations induced in germ cells transmitted through successive generations, yields a linear dose-response curve in the range used in these experiments. From these ratios of the slopes of the /sup 3/H beta and the /sup 60/ Co gamma radiation … more
Date: January 1, 1988
Creator: Lee, W.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Biological effects of static magnetic fields: a selective review with emphasis on risk assessment

Description: Rather than focusing on literature per se, the current study determines the status of magnetic field information that is applicable to risk assessment. Hence, an attempt is made to identify both the literature that is useful to the goal of risk assessment and a framework within which risk assessment methodologies can be derived. From this selected review, it is concluded that three areas exist for which adequate information can be found to begin modelling: disease induction, reproduction and de… more
Date: April 1, 1982
Creator: Easterly, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radioecology of Natural Systems. Final Report, May 1, 1962-October 31, 1979

Description: This is the final report to the US Department of Energy and its predecessors on Contract EY-76-S-02-1156 with Colorado State University. During the first five years of the program, investigations were focused on the accumulation of fallout radionuclides in a well-studied mule deer population in north-central Colorado. In 1967, the scope of the program was enlarged to include studies on radionuclide behavior in mountain lake ecosystems, radiation effects on a shortgrass plains ecosystem, and the… more
Date: October 31, 1979
Creator: Whicker, F. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Potential value of Cs-137 capsules

Description: We determined the value of Cs-137 compared to Co-60 as a source for the irradiation of fruit (apples and cherries), pork and medical supplies. Cs-137, in the WESF capsule form, had a value of approximately $0.40/Ci as a substitute for Co-60 priced at approximately $1.00/Ci. The comparison was based on the available curies emitted from the surface of each capsule. We developed preliminary designs for fourteen irradiation facilities; seven were based on Co-60 and seven were based on Cs-137. These… more
Date: April 1, 1985
Creator: Bloomster, C. H.; Brown, D. R.; Bruno, G. A.; Hazelton, R. F.; Hendrickson, P. L.; Lezberg, A. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Complete Genome Sequence of Bacillus thuringiensis AlHakam

Description: Bacillus thuringiensis is an insect pathogen that is widelyused as a biopesticide (3). Here we report the finished, annotated genomesequence of B. thuringiensis Al Hakam, which was collected in Iraq by theUnited Nations Special Commission (2).
Date: April 1, 2007
Creator: Challacombe, Jean F.; Altherr, Michael R.; Xie, Gary; Bhotika, Smriti S.; Brown, Nancy; Bruce, David et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Relationship of coarse woody debris to arthropod Availability for Red-Cockaded Woodpeckers and other bark-foraging birds on loblolly pine boles.

Description: Abstract This study determined if short-term removal of coarse woody debris would reduce prey available to red-cockaded woodpeckers (Picoides borealis Vieillot) and other bark-foraging birds at the Savannah River Site in Aiken and Barnwell counties, SC. All coarse woody debris was removed from four 9-ha plots of mature loblolly pine (Pinus taeda L.) in 1997 and again in 1998. We sampled arthropods in coarse woody debris removal and control stands using crawl traps that captured arthropods crawl… more
Date: April 1, 2008
Creator: Horn, Scott & Hanula, James, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Salmon Life Histories, Habitat, and Food Webs in the Columbia River Estuary: An Overview of Research Results, 2002-2006.

Description: From 2002 through 2006 we investigated historical and contemporary variations in juvenile Chinook salmon Oncorhynchus tshawytscha life histories, habitat associations, and food webs in the lower Columbia River estuary (mouth to rkm 101). At near-shore beach-seining sites in the estuary, Chinook salmon occurred during all months of the year, increasing in abundance from January through late spring or early summer and declining rapidly after July. Recently emerged fry dispersed throughout the est… more
Date: August 1, 2008
Creator: Bottom, Daniel L.; Anderson, Greer & Baptisa, Antonio
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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200-BP-1 Prototype Hanford Barrier Annual Monitoring Report for Fiscal Years 2005 Through 2007

Description: A prototype Hanford barrier was deployed over the 216-B-57 Crib at the Hanford Site in 1994 to prevent percolation through the underlying waste and to minimize spreading of buried contaminants. This barrier is being monitored to evaluate physical and hydrologic performance at the field scale. This report summarizes data collected during the period FY 2005 through FY 2007. In FY 2007, monitoring of the prototype Hanford barrier focused on barrier stability, vegetative cover, evidence of plant an… more
Date: February 1, 2008
Creator: Ward, Andy L.; Link, Steven O.; Strickland, Christopher E.; Draper, Kathryn E. & Clayton, Ray E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microwave Treatment as a Pesticide Alternative for Stored-Products

Description: This CRADA was a continuation of earlier work with Micro-Grain, Inc. to develop power, high frequency microwave treatment process to treat insect infested grain. ORNLs role was as a subcontractor to Micro-Grain's Phase II SBIR project funded by the US Department of Agriculture. The primary objective was to develop a commercial scale prototype unit capable of treating infested grain at flow rates approaching 1 kg/sec, which is required to be viable in the grain handling industry. A flow rate of … more
Date: May 21, 2003
Creator: Bigelow, T.S.; Forrester, S.C.; Halverson, S.; Halverson, B. & Phillips, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Method for the Automatic Detection of Insect Clutter in Doppler-Radar Returns.

Description: The accurate detection and removal of insect clutter from millimeter wavelength cloud radar (MMCR) returns is of high importance to boundary layer cloud research (e.g., Geerts et al., 2005). When only radar Doppler moments are available, it is difficult to produce a reliable screening of insect clutter from cloud returns because their distributions overlap. Hence, screening of MMCR insect clutter has historically involved a laborious manual process of cross-referencing radar moments against mea… more
Date: June 12, 2006
Creator: Luke,E.; Kollias, P. & Johnson, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuisance Wildlife Education and Prevention Plan for the Oak Ridge National Laboratory

Description: This document outlines a plan for management of nuisance wildlife at the Oak Ridge National Laboratory (ORNL). Nuisance wildlife management includes wildlife population control through hunting, trapping, removal, and habitat manipulation; wildlife damage control; and law enforcement. This plan covers the following subjects: (1) roles and responsibilities of individuals, groups, and agencies; (2) the general protocol for reducing nuisance wildlife problems; and (3) species-specific methodologies… more
Date: May 1, 2007
Creator: Giffen, Neil R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Sulfur Dioxide and Nitrogen Dioxide on Vegetation: Progress Report, 1 June 1977--28 February 1978

Description: The areas of research selected are related to fossil fuel combustion and are believed or are known to occur in the field: the mode of action of SO/sub 2/ in relation to its metabolic fate; the influence of NO/sub 2/ on the phytotoxicity of SO/sub 2/, and the combined effects of these pollutants on crop yield under field conditions; the effect of SO/sub 2/ on the plant with respect to its susceptibility to plant diseases; and the effect of SO/sub 2/ on the behavior and development of the Mexican… more
Date: February 1, 1978
Creator: Weinstein, L. H.; McCune, D. C. & MacLean, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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