182 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Soil Chemistry"  
Results: 1 - 24 next
open access

Soil Column Studies with Radiostrontium I. Effects of Temperature and of Species of Accompanying Ion

Description: Soil chemistry studies have been carried on at Hanford for a number of years in support of the disposal of low and intermediate level liquid wastes to the ground. Equilibrium type experiments were carried out to investigate the mechanisms of the reactions of Sr, Cs, and rare earth ions with soils (1, 3, 4, 5). Experiments were also conducted with simulated and actual wastes in soil columns and an empirical method was developed for prediction of radionuclide breakthrough from ground disposal fac… more
Date: September 22, 1959
Creator: Nelson, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Soil/sediment characterization for 216-A-29 ditch

Description: This document provides a detailed description of the environmental samples collected from the 216-A-29 Ditch in 1988. Tables summarizing the laboratory data for radionuclides, metals, and soil chemistry are included.
Date: March 1, 1997
Creator: Mitchell, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hanford tanks initiative work plan -- subsurface characterization to support the closure-readiness demonstration for tank 241-AX-104

Description: This document presents a plan for subsurface investigation near 241-AX-104 Single-Shell tank. Objectives of the investigation are soil sampling and analyses (physical and chemical), local stratigraphic correlation, groundwater background characterization, and geophysical surveys. The primary purpose of the investigation is to supply physical and hydraulic properties for numerical modeling of vadose zone flow and transport.
Date: September 27, 1996
Creator: Barnett, D. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

REMEDIATION OF LEON WATER FLOOD, BUTLER COUNTY, KANSAS

Description: The Leon Water Flood site has undergone one season of soil amendments and growth of specialized plants meant to colonize and accelerate the remediation of the salt-impacted site. The researchers characterized the impacted soil as to chemistry, added soil amendments, and planted several species of seedlings, and seeded the scarred areas. After the first growing season, the surface soil was again characterized and groundcover was also characterized. While plant growth was quite meager across the … more
Date: November 26, 2001
Creator: Korphage, M. L.; Kindscher, Kelly & Langhus, Bruce G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Diagnosis and correction of soil nutrient limitations in intensively managed Southern pine forests. Quarterly report for the period January-March 2000

Description: This report is a summary of project status and activities performed during the quarter: (1) Initial error runs were finished and coding was adjusted to account for errors. A documentation manual and users manual have been written and gone through the first editing. The model was presented to the forest industry during a review meeting and adjustments were made to the model based on their input. The model has been sent to interested parties in Canada and Australia to test it and report back on a… more
Date: March 1, 2000
Creator: Comerford, N.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Performance evaluation soil samples utilizing encapsulation technology

Description: Performance evaluation soil samples and method of their preparation are described using encapsulation technology to encapsulate analytes which are introduced into a soil matrix for analysis and evaluation by analytical laboratories. Target analytes are mixed in an appropriate solvent at predetermined concentrations. The mixture is emulsified in a solution of polymeric film forming material. The emulsified solution is polymerized to form microcapsules. The microcapsules are recovered, quantitate… more
Date: December 1, 1997
Creator: Dahlgran, James R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Soil aggregate stabilization and carbon sequestration: Feedbacks through organomineral associations

Description: Primary production (specifically, the rate and quality of C transfer below ground) and soil microbial activity (specifically, the rates of C transformation and decay) are recognized as the overall biological processes governing soil organic C (SOC) dynamics. These two processes and, hence, SOC cycling and storage are controlled by complex underlying biotic and abiotic interactions and feedbacks, most of which can be tied in one way or another to the influences of the five state factors related … more
Date: December 31, 1996
Creator: Jastrow, J.D. & Miller, R.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

COMBINED ANALYSIS OF THORIUM AND FAST NEUTRON DATA AT THE LUNAR SURFACE

Description: The global distribution of the radioactive elements (U, K, Th) at the lunar surface is an important parameter for an understanding of lunar evolution, because they have provided continuous heat over the lifetime of the Moon. Today, only the thorium distribution is available for the whole lunar surface [1]. Another key parameter that characterize the surface of the Moon is the presence of mare basalts. These basalts are concentrated on the nearside and are represented by materials with high-Fe c… more
Date: January 1, 2001
Creator: GASNAULT, O.; FELDMAN, W. & AL, ET
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Investigation of nonlinear dynamic soil property at the Savannah River Site

Description: This document summarizes laboratory dynamic soil testing investigations conducted by the University of Texas at Austin (UTA) for the Savannah River Site (SRS) (Stokoe et al., 1995a, Stokoe et al., 1995b, Sponseller and Stokoe, 1995). The purpose of the investigation is to provide an evaluation of past testing results in the context of new test data and the development of consistent site wide models of material strain dependencies based upon geologic formation, depth, and relevant index properti… more
Date: January 17, 2000
Creator: Lee, R.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Phase II Interim Report -- Assessment of Hydrocarbon Seepage Detection Methods on the Fort Peck Reservation, Northeast Montana

Description: The following work was performed: (1) collected reconnaissance micro-magnetic data and background field data for Area 1, (2) identified and collected soil sample data in three anomalous regions of Area 1, (3) sampled soils in Northwest Poplar Oil Field, (4) graphed, mapped, and interpreted all data areas listed above, (5) registered for the AAPG Penrose Conference on Hydrocarbon Seepage Mechanisms and Migration (postponed from 9/16/01 until 4/7/02 in Vancouver, B.C.). Results include the identi… more
Date: April 24, 2002
Creator: Monson, Lawrence M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Isotope tracers of organic carbon during artificial recharge

Description: This project developed an analytical technique for measuring the isotope abundance for 14C and 13C in total organic carbon (TOC) in order to test whether these measurements can trace TOC interaction with sedimentary material at the bottom of rivers and lakes, soils, and subsurface aquifer rocks.
Date: February 9, 1998
Creator: Davisson, M.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Common causes of material degradation in buried piping

Description: Buried pipe may fail for innumerable reasons. Causes can be mechanical damage/breakage, chemically initiated corrosion, or a combination. Failures may originate either internally or externally on the pipe. They may be related to flaws in the design, to excessive or unanticipated internal pressure or ground level loading, and/or to poor or uncertain installation practice. Or the pipe may simply ``wear out`` in service. Steel is strong and very forgiving in underground applications, especially wi… more
Date: January 20, 1997
Creator: Jenkins, C.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

F-Area Northeast Expansion Report, Volumes 1

Description: A geotechnical program has been complexed in F-Area at the Savannah River Site in South Carolina. This program investigated the subsurface conditions for the area known as the ''northeast expansion'' located in the F-Area.
Date: August 23, 1999
Creator: Syms, F.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chapter II.C Transport of Radionuclides through Soil and Ground Water

Description: The purpose of this report is to provide a clearer perspective of the impact of radionuclides in soil and groundwater, particularly for those not well-versed in soil science, hydrology, and geology. Through nuclear waste disposal or accidents, radionuclides come in contact with soil and groundwater. Man is exposed to radiation as a result of movement (or transport) of the radionuclides into his environment. Water is the principal carrier that induces transport, but chemical characteristics of s… more
Date: December 23, 1980
Creator: Corey, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Collboration: Interfacial Soil Chemistry of Radionuclides in the Unsaturated Zone

Description: The principal goal of this project was to assess the molecular nature and stability of radionuclide immoblization during weathering reactions in bulk Hanford sediments and their high surface area clay mineral constituents. We focused on the unique aqueous geochemical conditions that are representative of waste-impacted locations in the Hanford site vadose zone; high ionic strength, high pH and high Al concentrations. The specific objectives of the work were to measure the coupling of clay miner… more
Date: December 11, 2006
Creator: Mueller, Karl T.; Chorover, Don; O'Day, Peggy; Serne, R. Jeff; Crosson, Garry; Bowers, Geoffrey et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measurement of 3H in soil cores from the Hyrax Event (U3bh) subsidence crater

Description: Core samples were collected from two boreholes drilled in the subsidence crater of the Hyrax event (U3bh). The moisture in the core samples was extracted via freeze drying and tritiw-n was measured in the extracted moisture via `He accumulation mass spectrometry or liquid scintillation counting. Elevated tritium concentrations (IE4 - IE6 pCi/L extracted moisture as of the time of measurement) were observed in the extracted moisture from virtually all of the core samples with significant increas… more
Date: July 1, 1996
Creator: Kreek, S.; Hudson, G.B. & Ruth, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Regional biomass supply: three case studies in the Midwest, US

Description: Increased interest in the development and utilization of alternative energy sources has generated research demonstrating that fuels developed from energy crops (biofuels) can be a viable substitute for fossil fuels. A national energy program dedicated to the advancement of fuel derived from lignocellulosic crops could have major impacts on conventional energy supplied in the United States. Sufficient biofuel demand would allow conversion of croplands, as well as some pasture and forest lands, i… more
Date: June 1, 1995
Creator: English, Burton C.; Dillivan, Kim D.; Ojo, Matthew A.; Alexander, Robert R. & Graham, Robin L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Soil treatment to remove uranium and related mixed radioactive heavy metal contaminants. Quarterly report, January--March 1995

Description: The objective of this project is to design and develop a physico- chemical treatment process for the removal of uranium and heavy metals from contaminated soil to achieve target contamination levels below 35 pCi/g of soil and a target for non-radioactive heavy metals below concentration levels permissible for release of the soil. Ex- situ pilot-scale soil decontamination and leachate treatment test using Chalk River Chemical Pit soil are nearing completion. Soil decontamination tests using Fern… more
Date: May 1, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen