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Title: Electronic Guide Distribution at SNL.


Abstract not provided.

; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the Classification Officers Meeting held April 24-25, 2007 in Germantown, MD.
Country of Publication:
United States

Citation Formats

Green, Bruce, Kaczor, Lynn Marie, and Kaczor, Lynn Marie. Electronic Guide Distribution at SNL.. United States: N. p., 2007. Web.
Green, Bruce, Kaczor, Lynn Marie, & Kaczor, Lynn Marie. Electronic Guide Distribution at SNL.. United States.
Green, Bruce, Kaczor, Lynn Marie, and Kaczor, Lynn Marie. Tue . "Electronic Guide Distribution at SNL.". United States. doi:.
title = {Electronic Guide Distribution at SNL.},
author = {Green, Bruce and Kaczor, Lynn Marie and Kaczor, Lynn Marie},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}

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  • Conventional soldering of electronic components generally requires the application of a chemical flux to promote solder wetting and flow. Chlorofluorocarbons (CFC) and halogenated solvents are normally used to remove the resulting flux residues. While such practice has been routinely accepted throughout the electronics industry, the environmental impact of hazardous solvents on ozone depletion will eventually limit or prevent their use. Solvent substitution or alternative technologies must be developed to meet these goals. Sandia National Laboratories, Albuquerque has a comprehensive environmentally conscious electronics manufacturing program underway that is funded by the DOE Office of Technology Development. Primary elements of the integratedmore » task are the characterization and development of alternative fluxless soldering technologies that would eliminate circuit board cleaning associated with flux residue removal. Storage and handling of hazardous solvents and mixed solvent-flux waste would be consequently reduced during electronics soldering. This paper will report on the progress of the SNL fluxless soldering initiative. Emphasis is placed on the use of controlled atmospheres, laser heating, and ultrasonic soldering.« less
  • In the area studied, the Atherton Formation accumulated primarily as outwash deposits dominated by trough and wedge cross-bedding. The distribution of these cements was controlled by at least three factors: (1) position within the deposit relative to the land surface, (2) average grain size, and (3) primary stratification. Over 90% of cement zones are within 7 m (23 ft) of the present land surface. Meteoric waters made more acidic by decaying organic material locally dissolved carbonate framework grains. As pore fluids continued to move downward and laterally, cementation occurred. On a second level, higher permeability zones associated with sediment ofmore » larger grain sizes was an important factor influencing the location of cementation. Cemented horizons are present in 48% of pebble and sandy pebble gravels (contact and pore lining types) and 17% of sands and pebbly sands (contact, pore lining, and occluded types). Moreover, within sand units primary stratification was a parameter that influenced the location of cementation sites. In wedge crossbed sets, cement zones parallel inclined laminations; in trough cross-beds, 79% of the cement is concentrated in the lower one-third of bed sets near trough axes or immediately below a trough's basal erosion surface. Carbonate cements in the Atherton range from a trace to 6 mole % MgCO/sub 3/ (X- = 3.6 mole %) with traces of Fe in 16% of the samples analyzed (205 total analyses). The source for Mg and Fe is believed related to the dissolution of dolomite and Fe-bearing silicate framework grains. The limonite/hematite cements are present as rare, pore-filling patches.« less
  • This paper provides an introduction to and overview of the ASHRAE Cold Air distribution System Design Guide. The Design Guide was commissioned by ASHRAE to provide designers, building owners, and other interested parties with the basic information needed to design, install, and operate successful cold air distribution systems. Cold air distribution systems typically supply air between 40 F and 50 F (4 C and 10 C) in contrast to conventional systems with supply air temperatures between 50 F (10 C) and 59 F (15 C). Cold air distribution technology offers benefits such as lower mechanical system costs, reduced energy consumption,more » and improved comfort. The Design Guide provides detailed information on those areas of cold air distribution design that differ from conventional design or that require special attention. Some of these areas include calculating cooling loads, determining ventilation air requirements, selecting cooling coils, establishing insulation requirements, selecting cooling coils, establishing insulation requirements, selecting air distribution terminals and diffusers, and developing control sequences. Discussions of economic analysis, computer modeling, and commissioning of cold air distribution systems are also provided. This paper presents background information on cold air distribution and describes the contents and use of the Design Guide. This paper also provides an overview of the steps in the cold air distribution design procedure, as well as a bibliography of useful supplemental publications.« less