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The stable and metastable phase relations in the system Pb/sub 2/SiO/sub 4/-PbSiO/sub 3/ were reexamined using Raman and ir spectroscopy to characterize the phases. Three stable phases, H-Pb/sub 2/SiO/sub 4/, M-Pb/sub 2/SiO/sub 4/, and PbSiO/sub 3/ (alamosite) and four metastable phases, L-Pb/sub 2/SiO/sub 4/, phase X, L-PbSiO/sub 3/, and hexagonal PbSiO/sub 3/, occur in the portion of the system investigated. The Raman and ir spectra allow some conclusions to be drawn about the structures of silicate groups in the lead silicate crystalline phases.
1979-07-01
The stable and metastable phase relations in the system Pb/sub 2/SiO/sub 4/-PbSiO/sub 3/ were reexamined using Raman and ir spectroscopy to characterize the phases. Three stable phases, H-Pb/sub 2/SiO/sub 4/, M-Pb/sub 2/SiO/sub 4/, and PbSiO/sub 3/ (alamosite) and four metastable phases, L-Pb/sub 2/SiO/sub 4/, phase X, L-PbSiO/sub 3/, and hexagonal PbSiO/sub 3/, occur in the portion of the system investigated. The Raman and ir spectra allow some conclusions to be drawn about the structures of silicate groups in the lead silicate crystalline phases.
axion: Axion - Java Database - News
The Axion news feed is on hiatus, yet Axion is still being actively developed. ... Better late than never, it's the Axion database project's October 2003 ...
A small, fast, SQL and JDBC compliant relational database engine written in and for the Java programming language. [Open source, BSD License]
arXiv:hep-ph/9506229 v1 02 Jun 95
File Format: PDF/Adobe Acrobat - View as HTMLThe axion is the quantum of oscillation of the ? parameter of QCD. It is a particle ... ticle physics is the PQ mechanism with an ?invisible? axion. ...
Currently, there are several Greater Confinement Disposal (GCD) boreholes at the Radioactive Waste Management Site (RWMS) for the Nevada Test Site. These are intermediate-depth boreholes used for the disposal of special case wastes, that is, radioactive waste within the Department of Energy complex that do not meet the criteria established for disposal of high-level waste, transuranic waste, or low-level waste. A performance assessment is needed to evaluate the safety of the GCD site, and to examine the feasibility of the GCD disposal concept as a disposal solution for special case wastes in general. This report documents the effort in defining all the waste inventory presently disposed of at the GCD site, and the inventory and release model to be used in a performance assessment for compliance with the Environmental Protection Agency`s 40 CFR 191.
1991-12-01
Currently, there are several Greater Confinement Disposal (GCD) boreholes at the Radioactive Waste Management Site (RWMS) for the Nevada Test Site. These are intermediate-depth boreholes used for the disposal of special case wastes, that is, radioactive waste within the Department of Energy complex that do not meet the criteria established for disposal of high-level waste, transuranic waste, or low-level waste. A performance assessment is needed to evaluate the safety of the GCD site, and to examine the feasibility of the GCD disposal concept as a disposal solution for special case wastes in general. This report documents the effort in defining all the waste inventory presently disposed of at the GCD site, and the inventory and release model to be used in a performance assessment for compliance with the Environmental Protection Agency`s 40 CFR 191.
The general purpose of the Yucca Mountain Site Characterization Project (YMSCP) Introduced Materials Task is to understand and predict potential long-term modifications of natural water chemistry related to the construction and operation of a radioactive waste repository that may significantly affect performance of the waste packages. The present study focuses on diesel exhaust. Although chemical information on diesel exhaust exists in the literature, it is either not explicit or incomplete, and none of it establishes mechanisms that might be used to predict long-term behavior. In addition, the data regarding microbially mediated chemical reactions are not well correlated with the abiotic chemical data. To obtain some of the required long-term information, we chose a historical analog: the U12n tunnel at Rainier Mesa, Nevada Test Site. This choice was based on the tunnel`s extended (30-year) history of diesel usage, its geological similarity to Yucca Mountain, and its availability. The sample site within the tunnel was chosen based on visual inspection and on information gathered from miners who were present during tunnel operations. The thick layer of dark deposit at that site was assumed to consist primarily of rock powder and diesel exhaust. Surface samples and core samples were collected with an intent to analyze the deposit and to measure potential migration of chemical components into the rock. X-ray diffraction (XRD), x-ray fluorescence (XRF), scanning electron microscopy (SEM) with energy dispersive spectra (EDS) analysis, secondary-ion mass spectrometry (SIMS), and Fourier transform infrared (FTIR) analysis were used to measure both spatial distribution and concentration for the wide variety of chemical components that were expected based on our literature survey.
Montreal Axion - Wikipedia, the free encyclopedia
The Montreal Axion are a National Women's Hockey League team located in Montreal, Quebec, Canada. v ? d ? e · Sports teams based in the province of Quebec, ...
Home Page (The Fulton-Cushing Collection)
The purpose of the Fulton-Cushing Collection of the Axion Research Foundation is to preserve important materials from the history of Neuroscience and ...
Axion is always looking for data entry operators to work with. Send us your information and we will let you know when we can use your skills in one of our ...
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The axion is a hypothetical elementary particle proposed to explain the absence of an electrical dipole moment for the neutron. The axion has no electric ...
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Bill Kehaly is General Manager of Axion, LLC and the Team Leader of Axion Racing. Per the DARPA rules the Team Leader is the eligible entity responsible for ...
Overview of company, vehicles, and tools. News, press releases, and members area.
Axion Project Incubation Status - Apache Incubator
For general project status, see the Axion project website. ... The axion project never moved to the ASF from tigris.org. 2003-12-19: The Apache Incubator ...
We believe our PcB technology represents the first major advance in lead-acid battery technology in 30 years.
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Axion - Wikipedia, the free encyclopedia
The axion is a hypothetical elementary particle postulated by Peccei-Quinn theory in 1977 to resolve the strong-CP problem in quantum chromodynamics (QCD). ...
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