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Long-term Variations of CO2 Trapped in Different Mechanisms in Deep Saline Formations: A Case Study of the Songliao Basin, China

Description: The geological storage of CO{sub 2} in deep saline formations is increasing seen as a viable strategy to reduce the release of greenhouse gases to the atmosphere. There are numerous sedimentary basins in China, in which a number of suitable CO{sub 2} geologic reservoirs are potentially available. To identify the multi-phase processes, geochemical changes and mineral alteration, and CO{sub 2} trapping mechanisms after CO{sub 2} injection, reactive geochemical transport simulations using a simple… more
Date: June 10, 2008
Creator: Zhang, Wei; Li, Yilian; Xu, Tianfu; Cheng, Huilin; Zheng, Yan & Xiong, Peng
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Feasibility studies of thermonuclear neutron capture synthesis of SHE

Description: A variety of thermonuclear neutron sources and neutron capture targets were investigated for their potential of allowing signigicant production of heavy, perhaps superheavy, isotopes. The neutron sources considered range from inertial confinement microexplosives to (underground) macroexplosives. Optimal capture targets appear to be composites containing uranium and protactinium. 1 figure.
Date: April 10, 1978
Creator: Meldner, H.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Escapement and Productivity of Spring Chinook Salmon and Summer Steelhead in the John Day River Basin, 2005-2006 Annual Technical Report.

Description: The objectives are: (1) Estimate number and distribution of spring Chinook salmon Oncorhynchus tshawytscha redds and spawners in the John Day River subbasin; and (2) Estimate smolt-to-adult survival rates (SAR) and out-migrant abundance for spring Chinook and summer steelhead O. mykiss and life history characteristics of summer steelhead. The John Day River subbasin supports one of the last remaining intact wild populations of spring Chinook salmon and summer steelhead in the Columbia River Bas… more
Date: April 10, 2009
Creator: Schultz, Terra Lang; Wilson, Wayne H. & Ruzycki, James R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monitoring and Evaluation of Supplemented Spring Chinook Salmon and Life Histories of Wild Summer Steelhead in the Grande Ronde Basin, 2007 Annual Report.

Description: This is the ninth annual report for a multi-year project designed to monitor and evaluate supplementation of endemic spring Chinook salmon in Catherine Creek and the upper Grande Ronde River. These two streams historically supported anadromous fish populations that provided significant tribal and non-tribal fisheries, but in recent years, have experienced severe declines in abundance. Conventional and captive broodstock supplementation methods are being used to restore these spring Chinook salm… more
Date: April 10, 2009
Creator: Boe, Stephen J.; Crump, Carrie A. & Weldert, Rey L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Macroinvertebrate Abundance and Biomass: 2007 Data, BPA-51; Preliminary Report, February 10, 2009..

Description: Four Excel files containing information on the 2007 macroinvertebrate data were initially provided to Statistical Consulting Services (SCS) by EcoAnalysts on 1/27/2009. These data files contained information on abundance and biomass data at the level of taxonomic groups. The data were subsequently reformatted and compiled, and aggregated for analysis by SCS. All descriptions and analyses below relate to this compiled data. Computations were carried out separately for each site over all sample p… more
Date: February 10, 2009
Creator: Holderman, Charles
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modelling the Pan-Spectral Energy Distribution of Starburst Galaxies: III. Emission Line Diagnostics of Ensembles of H II Regions

Description: We have built, as far as possible, fully self-consistent models of H II regions around aging clusters of stars. These produce strong emission line diagnostics applicable to either individual H II regions in galaxies, or to the integrated emission line spectra of disk or starburst galaxies. The models assume that the expansion and internal pressure of individual H II regions is driven by the net input of mechanical energy from the central cluster, be it through winds or supernova events. This el… more
Date: May 10, 2006
Creator: Dopita, M A; Fischera, J; Sutherland, R S; Kewley, L J; Leitherer, C; Tuffs, R J et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A survey of cavity-nesting bees and wasps in loblolly pine stands of the Savannah River Site, Aiken County, South Carolina.

Description: Horn, Scott, and James L. Hanula. 2004. A survey of cavity-nesting bees and wasps in loblolly pine stands of the Savannah River Site, Aiken County, South Carolina. 39(3): 464-469. Abstract: In recent years concern over widespread losses in biodiversity has grown to include a possible decline of many native pollinators, primarily bees. Factors such as habitat fragmentation, agricultural practices, use of pesticides, the introduction of invasive species, or changes in land use may negatively impa… more
Date: March 10, 2004
Creator: Horn, S. & Hanula, J., L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Genome of Deep-Sea Vent Chemolithoautotroph Thiomicrospira crunogena XCL-2

Description: Presented here is the complete genome sequence of Thiomicrospira crunogena XCL-2, representative of ubiquitous chemolithoautotrophic sulfur-oxidizing bacteria isolated from deep-sea hydrothermal vents. This gammaproteobacterium has a single chromosome (2,427,734 bp), and its genome illustrates many of the adaptations that have enabled it to thrive at vents globally. It has 14 methyl-accepting chemotaxis protein genes, including four that may assist in positioning it in the redoxcline. A relativ… more
Date: January 10, 2007
Creator: Scott, K. M.; Sievert, S. M.; Abril, F. N.; Ball, L. A.; Barrett, C. J.; Blake, R. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Testing the Concept of Drift Shadow at Yucca Mountain, Nevada

Description: If proven, the concept of drift shadow, a zone of reduced water content and slower ground-water travel time beneath openings in fractured rock of the unsaturated zone, may increase performance of a proposed geologic repository for high-level radioactive waste at Yucca Mountain. To test this concept under natural-flow conditions present in the proposed repository horizon, isotopes within the uranium-series decay chain (uranium-238, uranium-234, and thorium-230, or {sup 238}U-{sup 234}U-{sup 230}… more
Date: March 10, 2006
Creator: Paces, J. B.; Neymark, L. A.; Ghezzehei, T. & Dobson, P. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical Evolution in Sersic 159-03 Observed with Xmm-Newton

Description: Using a new long X-ray observation of the cluster of galaxies Sersic 159-03 with XMM-Newton, we derive radial temperature and abundance profiles using single- and multi-temperature models. The fits to the EPIC and RGS spectra prefer multi-temperature models especially in the core. The radial profiles of oxygen and iron measured with EPIC/RGS and the line profiles in RGS suggest that there is a dip in the O/Fe ratio in the centre of the cluster compared to its immediate surroundings. A possible … more
Date: March 10, 2006
Creator: de Plaa, Jelle; Werner, N.; Bykov, A.M.; Kaastra, J.S.; Mendez, M.; Vink, J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DRIVING G-MODE PULSATIONS IN GAMMA DORADUS VARIABLES

Description: The {gamma} Doradus stars are a newly-discovered class of gravity-mode pulsators which lie just at or beyond the red edge of the {delta} Scuti instability strip. We present the results of calculations which predict pulsation instability of high-order g-modes with periods between 0.4 and 3 days, as observed in these stars. The pulsations are driven by the modulation of radiative flux by convection at the base of a deep envelope convection zone. Pulsation instability is predicted only for models … more
Date: October 10, 2000
Creator: GUZIK, J.; KAYE, A. & AL, ET
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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