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1

Trace Element Analysis | Open Energy Information  

Open Energy Info (EERE)

Trace Element Analysis Trace Element Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Trace Element Analysis Details Activities (8) Areas (8) Regions (4) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Reconstructing the fluid circulation of a hydrothermal system Thermal: Cost Information Low-End Estimate (USD): 15.001,500 centUSD 0.015 kUSD 1.5e-5 MUSD 1.5e-8 TUSD / element Median Estimate (USD): 18.001,800 centUSD 0.018 kUSD 1.8e-5 MUSD 1.8e-8 TUSD / element High-End Estimate (USD): 106.0010,600 centUSD 0.106 kUSD 1.06e-4 MUSD 1.06e-7 TUSD / element

2

Amounts of Trace Elements in Marine Cephalopods  

Science Journals Connector (OSTI)

......Amounts of Trace Elements in Marine Cephalopods T. Ueda * M. Nakahara...H. Suzuki ** * Division of Marine Radioecology, National Institute...Power Reactor and Nuclear Fuel Development Cooperation, Tokyo...Co and Cs in 5 species of marine cephalopods were determined......

T. Ueda; M. Nakahara; T. Ishii; Y. Suzuki; H. Suzuki

1979-12-01T23:59:59.000Z

3

HELSINKI UNIVERSITY OF TECHNOLOGY ENE-47.153 Trace elements and alkaliTrace elements and alkali  

E-Print Network (OSTI)

elements in fossil - and waste-derived fuelsTrace elements in fossil - and waste-derived fuels Coal Peat Heavy fuel oil Pet coke MSW RDF Wood Waste wood Waste paper Scrap tyres Sew. sludge Hg 0.02-3 ~0.07 .153 Behaviour of trace elements in coalBehaviour of trace elements in coal combustion flue gasescombustion flue

Zevenhoven, Ron

4

Effect of Microbial Activity on Trace Element Release from Sewage  

E-Print Network (OSTI)

Effect of Microbial Activity on Trace Element Release from Sewage Sludge S H A B N A M Q U R E S H in mobilization of trace elements from land-applied wastewater sludge is not well-defined. Our study examined-effective management alternative. Unfor- tunately, sewage sludge also contains potentially toxic trace elements

Walter, M.Todd

5

Trace element content of magnetohydrodynamic coal combustion effluents  

Science Journals Connector (OSTI)

Trace element contents from effluents of a simulated coal-fired magnetohydrodynamic (MHD) combustion process have been determined using thermal neutron activation analysis techniques. The quality control consi...

M. S. Akanni; V. O. Ogugbuaja; W. D. James

1983-01-01T23:59:59.000Z

6

Trace elements in oil shale. Progress report, 1979-1980  

SciTech Connect

The purpose of this research program is to understand the potential impact of an oil shale industry on environmental levels of trace contaminants in the region. The program involves a comprehensive study of the sources, release mechanisms, transport, fate, and effects of toxic trace chemicals, principally the trace elements, in an oil shale industry. The overall objective of the program is to evaluate the environmental and health consequences of the release of toxic trace elements by shale and oil production and use. The baseline geochemical survey shows that stable trace elements maps can be constructed for numerous elements and that the trends observed are related to geologic and climatic factors. Shale retorted by above-ground processes tends to be very homogeneous (both in space and in time) in trace element content. Leachate studies show that significant amounts of B, F, and Mo are released from retorted shales and while B and Mo are rapidly flushed out, F is not. On the other hand, As, Se, and most other trace elements are not present in significant quantities. Significant amounts of F and B are also found in leachates of raw shales. Very large concentrations of reduced sulfur species are found in leachates of processed shale. Very high levels of B and Mo are taken up in some plants growing on processed shale with and without soil cover. There is a tendency for some trace elements to associate with specific organic fractions, indicating that organic chelation or complexation may play an important role. Many of the so-called standard methods for analyzing trace elements in oil shale-related materials are inadequate. A sampling manual is being written for the environmental scientist and practicing engineer. A new combination of methods is developed for separating the minerals in oil shale into different density fractions. Microbial investigations have tentatively identified the existence of thiobacilli in oil shale materials such as leachates. (DC)

Chappell, W R

1980-01-01T23:59:59.000Z

7

E-Print Network 3.0 - atmospheric trace element Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: 6 2.0 Sources and Deposition of Trace Metals Trace elements enter the atmosphere via both natural... 5 Chapter 2: Sources and Deposition of Trace Metals...

8

Larval Behavior and Natural Trace Element Signatures as Indicators of Crustacean Population Connectivity  

E-Print Network (OSTI)

variability in an atlas of trace element signatures forin creating a trace element atlas, our results show thatstage to create a trace element atlas in 2009 (Table 4.2),

Miller, Seth Haylen

2011-01-01T23:59:59.000Z

9

A study on some trace elements in Chilean seafood  

Science Journals Connector (OSTI)

Levels of essential and toxic trace elements in six marine species greatly in demand in the international market (canned pink clams, razor clams, clams, king crab, sardines, and frozen albacore tuna fish) were...

N. Gras; L. Munoz; M. Thieck

1993-03-01T23:59:59.000Z

10

Trace element fingerprinting of ancient Chinese gold with femtosecond laser  

NLE Websites -- All DOE Office Websites (Extended Search)

Trace element fingerprinting of ancient Chinese gold with femtosecond laser Trace element fingerprinting of ancient Chinese gold with femtosecond laser ablation-inductivity coupled mass spectrometry Title Trace element fingerprinting of ancient Chinese gold with femtosecond laser ablation-inductivity coupled mass spectrometry Publication Type Journal Article Year of Publication 2009 Authors Brostoff, Lynn B., Jhanis J. Gonzalez, Paul Jett, and Richard E. Russo Journal Journal of Archeological Science Volume 36 Start Page 461 Issue 2 Pagination 461-466 Date Published 02/2009 Keywords Ancient gold, femtosecond, la-icp-ms, Trace element Abstract In this collaborative investigation, femtosecond laser ablation-inductively coupled mass spectrometry (LA-ICP-MS) was applied to the study of a remarkable group of ancient Chinese gold objects in the Smithsonian's Freer Gallery of Art and Arthur M. Sackler Gallery. Taking advantage of the superior ablation characteristics and high precision of a femtosecond 266 nm Ti:sapphire laser at Lawrence Berkeley National Laboratory, major, minor and trace element concentrations in the gold fragments were quantified. Results validate use of femtosecond LA-ICP-MS for revealing ''fingerprints'' in minute gold samples. These fingerprints allow us to establish patterns based on the association of silver, palladium and platinum that support historical, technical and stylistic relationships, and shed new light on these ancient objects.

11

Trace element partitioning between type B CAI melts and melilite and spinel: Implications for trace element distribution  

E-Print Network (OSTI)

. Partition coefficients between intermediate composition melilites and CAI melt are the following: Li, 0.5 size energetics analysis is used to assess isovalent partitioning into the different cation sites, interpreta- tion of the trace element and isotope compositions of CAIs, particularly the light elements Li

Mcdonough, William F.

12

Trace element partitioning in Texas lignite  

E-Print Network (OSTI)

), but collected from the one of the secondary tanks which contains the slurry that exits the scrubber tower and is either recycled or sent to the thickener tank. 10. Bag house FGD (flue gas desulfurization system) fly ash fines (BHA): white-gray, dry, fine... Station. Concentrations of 41 elements were determined by neutron activation analysis. The particle size distribution was determined by Coulter counter analysis for the fly ash collected from the electrostatic precipitator outlets and from the flue...

Acevedo, Lillian Esther

1989-01-01T23:59:59.000Z

13

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS  

E-Print Network (OSTI)

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS JASON FULMAN Abstract. Combining Stein's method with heat kernel techniques, we show that the trace of the jth power There is a large literature on the traces of powers of random elements of compact Lie groups. One of the earliest

Fulman, Jason

14

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS  

E-Print Network (OSTI)

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS JASON FULMAN Abstract. Combining Stein's method with heat kernel techniques, we show that the trace of the jth power on the traces of powers of random elements of compact Lie groups. One of the earliest results is due to Diaconis

Fulman, Jason

15

Microbial acidification and pH effects on trace element release from sewage sludge  

E-Print Network (OSTI)

Microbial acidification and pH effects on trace element release from sewage sludge Shabnam Qureshia; Trace metals; Mobilization; Land application 1. Introduction Trace elements in land-applied wastewater sludge (sewage biosolids) are potentially phyto- or zoo-toxic if present in sufficient concentration

Walter, M.Todd

16

Engineering development of selective agglomeration: Trace element removal study  

SciTech Connect

Southern Company Services, Inc., (SCS) was contracted in 1989 by the US Department of Energy (DOE) to develop a commercially acceptable selective agglomeration technology to enhance the use of high-sulfur coals by 1993. The project scope involved development of a bench-scale process and components, as well as the design, testing, and evaluation of a proof-of-concept (POC) facility. To that end, a two-ton-per-hour facility was constructed and tested near Wilsonville, Alabama. Although it was not the primary focus of the test program, SCS also measured the ability of selective agglomeration to remove trace elements from coal. This document describes the results of that program.

Not Available

1993-09-01T23:59:59.000Z

17

E-Print Network 3.0 - airborne trace element Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Search Sample search results for: airborne trace element Page: << < 1 2 3 4 5 > >> 1 AIR-DEPOSITED POLLUTION IN THE ANACOSTIA RIVER WATERSHED Summary: pollution in Lake...

18

An evaluation of trace element release associated with acid mine drainage  

SciTech Connect

The determination of trace element release from geologic materials, such as oil shale and coal overburden, is important for proper solid waste management planning. The objective of this study was to determine a correlation between release using the following methods: (1) sequential selective dissolution for determining trace element residencies, (2) toxicity characteristic leaching procedure (TCLP), and (3) humidity cell weathering study simulating maximum trace element release. Two eastern oil shales were used, a New Albany shale that contains 4.6 percent pyrite, and a Chattanooga shale that contains 1.5 percent pyrite. Each shale was analyzed for elemental concentrations by soluble, adsorbed, organic, carbonate, and sulfide phases. The results of the results of the selective dissolution studies show that each trace element has a unique distribution between the various phases. Thus, it is possible to predict trace element release based on trace element residency. The TCLP results show that this method is suitable for assessing soluble trace element release but does not realistically assess potential hazards. The results of the humidity cell studies do demonstrate a more reasonable method for predicting trace element release and potential water quality hazards. The humidity cell methods, however, require months to obtain the required data with a large number of analytical measurements. When the selective dissolution data are compared to the trace element concentrations in the TCLP and humidity cell leachates, it is shown that leachate concentrations are predicted by the selective dissolution data. Therefore, selective dissolution may represent a rapid method to assess trace element release associated with acid mine drainage.

Sullivan, P.J.; Yelton, J.L. (Univ. of Wyoming Research Corp., Laramie (United States))

1988-12-01T23:59:59.000Z

19

Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh,  

Open Energy Info (EERE)

Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh, Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Walker-Lane Transition Zone Geothermal Region Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for

20

Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010)  

Open Energy Info (EERE)

Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Northwest Basin and Range Geothermal Region Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Trace element partitioning between baddeleyite and carbonatite melt at high pressures and high temperatures  

E-Print Network (OSTI)

as the heavy rare earth elements (HREE) prefer to enter baddeleyite rather than carbonate melts (D>1), whereas the light rare earth elements (LREE) and other trace elements behave incompatibly (D in carbonatite melts. Baddeleyite is known to accumulate the high field strength elements (HFSE) and some rare

22

Trace element behavior in the fluidized bed gasification of solid recovered fuels A thermodynamic study  

Science Journals Connector (OSTI)

Gasification of biomass and recycled fuels is of particular interest for the efficient production of power and heat. Trace elements present as impurities in the product gas should be removed very efficiently. The objective of this work has been to develop and test thermodynamic models for the reactions of trace elements with chlorine and sulfur in the gasification processes of recycled fuels. In particular, the chemical reactions of trace elements with main thermochemical conversion products, main ash components, and bed and sorbent material are implemented into the model. The possibilities of gas cleaning devices in condensing and removing the trace element compounds are studied by establishing the volatilization tendency of trace element compounds in reducing gases. The results obtained with the model are compared with the measured data of trace elements of gasification experiments using solid recovered fuel as feedstock. Some corresponding studies in the literature are also critically reviewed and compared. The observed discrepancies may be attributed to differences in thermodynamic databases applied and experimental arrangements. The method of removing gaseous trace elements by condensation is already in use in the 160MWth waste gasification plant in Lahti, Finland.

Jukka Konttinen; Rainer Backman; M. Hupa; Antero Moilanen; Esa Kurkela

2013-01-01T23:59:59.000Z

23

Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot  

Open Energy Info (EERE)

Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Springs Thermal Area, Utah Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Springs Thermal Area, Utah Details Activities (3) Areas (1) Regions (0) Abstract: Chemical interaction of thermal fluids with reservoir rock in the Roosevelt Hot Springs thermal area, Utah, has resulted in the development of characteristic trace-element dispersion patterns. Multielement analyses of surface rock samples, soil samples and drill cuttings from deep exploration wells provide a three-dimensional perspective of chemical redistribution within this structurally-controlled hot-water geothermal system. Five distinctive elemental suites of chemical enrichment are

24

Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) |  

Open Energy Info (EERE)

Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) Exploration Activity Details Location Socorro Mountain Area Exploration Technique Trace Element Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes In order to determine which of the faults in these regions were active and open to hydrothermal fluid circulation, we have employed selective ion geochemistry that is a new geochemical method capable of detecting anomalous concentrations for up to 47 elements transported to soils by geochemical cells or low pressure vapors. Enzyme leach and Terrasol leach are two such techniques. This method has to datae been mostly applied to

25

Time Series of Trace Element Concentrations Calculated from  

E-Print Network (OSTI)

a). A total of 120 samples were collected at sites within the Bay, outside the Golden Gate receives many waste water discharges, especially in areas south of the Dumbarton Bridge, that contain trace

26

Trace Element Geochemical Zoning in the Roosevelt Hot Springs Thermal Area,  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Trace Element Geochemical Zoning in the Roosevelt Hot Springs Thermal Area, Utah Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Trace Element Geochemical Zoning in the Roosevelt Hot Springs Thermal Area, Utah Abstract Chemical interaction of thermal brines with reservoir rock in the Roosevelt Hot Springs thermal area has resulted in the development of distinctive trace element signatures. Geochemical analysis of soil sample, shallow temperature gradient drill hole cuttings and deep drill hole cutting provides a three dimensional perspective of trace element distributions within the system. Distributions of As, Hg and Li provide the clearest expression of hydrothermal activity. Comparison of these distribution

27

Trace element mineral transformations associated with hydration and recarbonation of retorted oil shale  

Science Journals Connector (OSTI)

A laboratory study was conducted to evaluate the influence of hydration and recarbonation on the solidphase distribution of trace elements in retorted oil shale. The oil shale samples were retorted by the Paraho ...

M. E. Essington

28

E-Print Network 3.0 - aristotelis trace elements Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

results for: aristotelis trace elements Page: << < 1 2 3 4 5 > >> 1 Examen LA207 Matlab: applications en mecanique Summary: en imposant la vue de dessus avec la fonction...

29

Zevenhoven & Kilpinen TRACE ELEMENTS, ALKALI METALS 19.6.2001 8-1 Chapter 8 Trace elements,  

E-Print Network (OSTI)

air pollutants), "known or suspected of causing cancer or other serious health effects" (see also, in part stemming from anthropogenic sources, i.e. pollution. In wastes and waste-derived fuels the "trace to fouling of turbine blades (mainly Ca)or pollute or poison catalysts (mainly As) or sorbents downstream

Zevenhoven, Ron

30

Trace elements in co-combustion of solid recovered fuel and coal  

Science Journals Connector (OSTI)

Trace element partitioning in co-combustion of a bituminous coal and a solid recovered fuel (SRF) was studied in an entrained flow reactor. The experiments were carried out at conditions similar to pulverized coal combustion, with SRF shares of 7.9wt.% (wet basis), 14.8wt.% and 25.0wt.%. In addition, the effect of additives such as NaCl, PVC, ammonium sulphate, and kaolinite on trace element partitioning was investigated. The trace elements studied were As, Cd, Cr, Pb, Sb and Zn, since these elements were significantly enriched in SRF as compared to coal. During the experiments, bottom ash was collected in a chamber, large fly ash particles were collected by a cyclone with a cut-off diameter of ~2.5?m, and the remaining fly ash particles were gathered in a filter. It was found that when coal was co-fired with SRF, the As, Cd, Pb, Sb and Zn content in filter ash/cyclone ash increased almost linearly with their content in fuel ash. This linear tendency was affected when the fuels were mixed with additives. The volatility of trace elements during combustion was assessed by applying a relative enrichment (RE) factor, and TEMEDS analysis was conducted to provide qualitative interpretations. The results indicated that As, Cd, Pb, Sb and Zn were highly volatile when co-firing coal and SRF, whereas the volatility of Cr was relatively low. Compared with coal combustion, co-firing of coal and SRF slightly enhanced the volatility of Cd, Pb and Zn, but reduced the volatility of Cr and Sb. The Cl-based additives increased the volatility of Cd, Pb and As, whereas addition of ammonium sulphate generally decreased the volatility of trace elements. Addition of kaolinite reduced the volatility of Pb, while the influence on other trace elements was insignificant. The results from the present work imply that trace element emission would be significantly increased when coal is co-fired with SRF, which may greatly enhance the toxicity of the dusts from coal-fired power plant. In order to minimize trace element emission in co-combustion, in addition to lowering the trace element content in SRF, utilizing SRF with low Cl content and coal with high S and aluminosilicates content would be desirable.

Hao Wu; Peter Glarborg; Flemming Jappe Frandsen; Kim Dam-Johansen; Peter Arendt Jensen; Bo Sander

2013-01-01T23:59:59.000Z

31

Trace Element Analysis At Central Nevada Seismic Zone Region (Coolbaugh, Et  

Open Energy Info (EERE)

Coolbaugh, Et Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Central Nevada Seismic Zone Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Central Nevada Seismic Zone Geothermal Region Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa

32

Trace elements in brown coal and its products of combustion  

Science Journals Connector (OSTI)

Concentrations of 38 elements in brown coal, bottom ash and size fractionated ESP coal ash from the Belchatw I Power Plant were determined by INAA. Based on enrichment factors calculated relatively to iron an...

U. Tomza; P. Kaleta

1986-10-20T23:59:59.000Z

33

Trace element emissions. Semi-annual report, October 1994--February 1995  

SciTech Connect

Many trace elements can exist in raw coal gas either in the form of metallic vapors or gaseous compounds which, besides their action on potentially ``very clean`` advanced power generating systems such as fuel cells and gas turbines, can also be detrimental to plant and animal life when released into the atmosphere. Therefore, volatile trace contaminants from coal which can also be toxic must be removed before they become detrimental to both power plant performance/endurance and the environment. Five trace elements were selected in this project based on: abundance in solid coal, volatility during gasification, effects on downstream systems and toxicity to plant and animal life. An understanding was sought in this investigation of the interactions of these five trace elements (and their high temperature species) with the different components in integrated cleanup and power generating systems, as well as the ultimate effects with respect to atmospheric emissions. Utilizing thermodynamic calculations and various experimental techniques, it was determined that a number of trace contaminants that exist in coal may be substantially removed by flyash, and after that by different sorbent systems. High temperature cleanup of contaminants by sorbents such as zinc titanate, primarily to remove sulfur, can also absorb some metallic contaminants such as cadmium and antimony. Further polishing will be required, however, to eliminate trace contaminant species incorporating the elements arsenic, selemium, lead, and mercury.

Pigeaud, A.; Maru, H.; Wilemski, G.; Helble, J.

1995-02-01T23:59:59.000Z

34

Trace Element Analysis At Roosevelt Hot Springs Area (Christensen, Et Al.,  

Open Energy Info (EERE)

Christensen, Et Al., Christensen, Et Al., 1983) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Roosevelt Hot Springs Area (Christensen, Et Al., 1983) Exploration Activity Details Location Roosevelt Hot Springs Area Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes Three of the recognized trace-element suites are characteristic of the surface and near-surface environment. These are: (1) concentrations of As, Sb, Be and Hg associated with siliceous material at the location of liquid discharge, fluid mixing, or at boiling interfaces; (2) deposits of Mn and Fe oxides containing concentrations of Ba, W, Be, Co, Cu, As, Sb and Hg formed by the oxidation of cooled brines; and (3) high concentrations of Hg

35

Trace Element Analysis At Northern Basin & Range Region (Coolbaugh, Et Al.,  

Open Energy Info (EERE)

At Northern Basin & Range Region (Coolbaugh, Et Al., At Northern Basin & Range Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Northern Basin & Range Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Northern Basin and Range Geothermal Region Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for

36

Correlations of trace elements in breast human tissues: Evaluation of spatial distribution using {mu}-XRF  

SciTech Connect

The aim of this work is to investigate microscopic correlations between trace elements in breast human tissues. A synchrotron X-ray fluorescence microprobe system ({mu}-XRF) was used to obtain two-dimensional distribution of trace element Ca, Fe, Cu and Zn in normal (6 samples) and malignant (14 samples) breast tissues. The experiment was performed in X-ray Fluorescence beam line at Laboratorio Nacional de Luz Sincrotron (LNLS), Campinas, Brazil. The white microbeam was generated with a fine conical capillary with a 20 {mu}m output diameter. The samples were supported on a XYZ table. An optical microscope with motorized zoom was used for sample positioning and choice the area to be scanned. Automatic two-dimensional scans were programmed and performed with steps of 30 {mu}m in each direction (x, y) on the selected area. The fluorescence signals were recorded using a Si(Li) detector, positioned at 90 degrees with respect to the incident beam, with a collection time of 10 s per point. The elemental maps obtained from each sample were overlap to observe correlation between trace elements. Qualitative results showed that the pairs of elements Ca-Zn and Fe-Cu could to be correlated in malignant breast tissues. Quantitative results, achieved by Spearman correlation tests, indicate that there is a spatial correlation between these pairs of elements (p < 0.001) suggesting the importance of these elements in metabolic processes associated with the development of the tumor.

Piacenti da Silva, Marina; Silva, Deisy Mara da; Ribeiro-Silva, Alfredo; Poletti, Martin Eduardo [Departamento de Fisica, FFCLRP/USP, Av. dos Bandeirantes n. 3900, 14040-901 Ribeirao Preto - SP (Brazil); Departamento de Patologia, HCFM/USP, Av. dos Bandeirantes n. 3900, 14040-901 Ribeirao Preto - SP (Brazil); Departamento de Fisica, FFCLRP/USP, Av. dos Bandeirantes n. 3900, 14040-901 Ribeirao Preto - SP (Brazil)

2012-05-17T23:59:59.000Z

37

Distribution of trace elements in waters and sediments of the Seversky Donets  

E-Print Network (OSTI)

Distribution of trace elements in waters and sediments of the Seversky Donets transboundary sources in the transboundary watershed of the Seversky Donets River (Ukraine/Russia). Bed sediments, V) and Th were measured in stream water and sediments. The low levels and variability of Th

Paris-Sud XI, Université de

38

Elevated Trace Element Concentrations in Southern Toads, Bufo terrestris, Exposed to Coal Combustion Waste  

E-Print Network (OSTI)

, and behavioral abnormalities in amphibians to coal combustion wastes (coal ash). Few studies, however, have determined trace element concentrations in amphibians exposed to coal ash. In the current study we compare high levels of selenium and may be useful bioindicators in agricultural and coal ash-impacted habitats

Hopkins, William A.

39

Trace Elements in Tree Rings: Evidence of Recent and Historical Air Pollution  

E-Print Network (OSTI)

, or both. Tree rings have been used to construct records of climate (1), document heavy metal pollution (2Trace Elements in Tree Rings: Evidence of Recent and Historical Air Pollution C. F. Baes III and S and Historical Air Pollution Abstract. Annual growth rinks from short-leaf pine trees in the Great Smoky

Baes, Fred

40

Effect of Processing Mode on Trace Elements in Dewatered Sludge Products Brian K. Richards1  

E-Print Network (OSTI)

Effect of Processing Mode on Trace Elements in Dewatered Sludge Products Brian K. Richards1 *, John considering the land application of wastewater sludges. The effects of pelletization/drying, composting compared. A single day's production of dewatered anaerobically-digested sludge (Syracuse, NY) was used

Walter, M.Todd

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Extractable trace elements in the soil profile after years of biosolids application  

SciTech Connect

The US Environmental Protection Agency (USEPA) and some state agencies regulate trace element additions to soil from land application of biosolids. The authors generally consider trace elements added in biosolids (sewage sludge) to accumulate in the soil surface without significant transport below the plow layer. They used 11 yr of field-study information from biosolids addition to dryland hard red winter wheat (Triticum aestivum L. Vona or TAM107) to determine the distribution of NH{sub 4}HCO{sub 3} diethylenetriaminepentaacetic acid (AB-DTPA)-extractable Cd, Cr, Cu, Mo, Ni, Pb, and Zn in 0 to 20 (plow layer), 20 to 60, 60 to 100, and 100 to 150 cm depth increments. This study is unique since it involves multiple biosolids application in a dryland summer fallow agroecosystem. The authors applied five or six applications of biosolids from the cities of Littleton and Englewood, CO, to Weld loam or Platner loam at four locations. This paper focuses on the 0 (control), the 56 or 67 kg of N ha{sup {minus}1} fertilizer rates, and the 6.7 and 26.8 dry Mg of biosolids ha{sup {minus}1} rates that they added every crop year. The authors observed significant (P < 0.10) accumulations of the trace elements in the plow layer of the biosolids-amended soils. Only Zn showed consistent increases in extractable levels below the plow layer at all four sites. The biosolids Zn concentration was larger than any other trace element resulting in larger loading of this element.

Barbarick, K.A.; Ippolito, J.A.; Westfall, D.G. [Colorado State Univ., Fort Collins, CO (United States). Dept. of Soil and Crop Sciences

1998-07-01T23:59:59.000Z

42

Trace Element Analysis At Long Valley Caldera Area (Klusman & Landress,  

Open Energy Info (EERE)

Klusman & Landress, Klusman & Landress, 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Long Valley Caldera Area (Klusman & Landress, 1979) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes This study involved the field collection and laboratory analysis of Al-horizon soil samples in the vicinity of a known geothermal source at Long Valley, California. The samples were analyzed for several constituents known to have influence on Hg retention by soils, including pH, hydrous Fe and Mn, and organic carbon, as well as Hg. The data compiled for these secondary parameters and the field-determined parameters of geology, soil

43

Investigation on thermal and trace element characteristics during co-combustion biomass with coal gangue  

Science Journals Connector (OSTI)

Abstract The thermochemical behaviors during co-combustion of coal gangue (CG), soybean stalk (SS), sawdust (SD) and their blends prepared at different ratios have been determined via thermogravimetric analysis. The simulate experiments in a fixed bed reactor were performed to investigate the partition behaviors of trace elements during co-combustion. The combustion profiles of biomass was more complicated than that of coal gangue. Ignition property and thermal reactivity of coal gangue could be enhanced by the addition of biomass. No interactions were observed between coal gangue and biomass during co-combustion. The volatilization ratios of trace elements decrease with the increasing proportions of biomass in the blends during co-combustion. Based on the results of heating value, activation energy, base/acid ratio and gaseous pollutant emissions, the blending ratio of 2030% biomass content is regarded as optimum composition for blending and could be applied directly at current combustion application with few modifications.

Chuncai Zhou; Guijian Liu; Ting Fang; Paul Kwan Sing Lam

2015-01-01T23:59:59.000Z

44

Stein's method, heat kernel, and traces of powers of elements of compact Lie groups  

E-Print Network (OSTI)

Combining Stein's method with heat kernel techniques, we show that the trace of the jth power of an element of U(n,C), USp(n,C) or SO(n,R) has a normal limit with error term of order j/n. In contrast to previous works, here j may be growing with n. The technique should prove useful in the study of the value distribution of approximate eigenfunctions of Laplacians.

Jason Fulman

2010-05-07T23:59:59.000Z

45

Determination of organic inorganic associations of trace elements in New Albany shale kerogen  

SciTech Connect

The inorganic and organic trace element associations in the kerogen isolated from the New Albany shale were studied by analysis of kerogen fractions and a mineral residue obtained using density separations. Elemental mass balance data from these fractions indicate a predominantly inorganic association with pyrite and marcasite for several elements (As, Co, Ga, Mn, Ni, Sb and Se). The degree of inorganic association of these elements was determined by treatment of the mineral residue ({approximately}85% FeS{sub 2}) with dilute HNO{sub 3} to remove pyrite and marcasite. The association of several other elements in minerals which are insoluble in dilute HNO{sub 3} (rutile, zircon, etc.) were also determined. The results of these studies indicate an essentially total organic association for V and approximately 95% organic association for Ni in New Albany kerogen. The determination of organically combined elements is very difficult for those elements which are predominantly concentrated in the mineral fraction. Correction methods based on low temperature ashing, chemical removal of pyrite, and physical methods of separation are compared.

Mercer, G.E.; Filby, R.H. (Washington State Univ., Pullman (USA))

1989-03-01T23:59:59.000Z

46

Minor and Trace Element Determination of Food Spices and Pulses of Different Origins by NAA and PAA  

Science Journals Connector (OSTI)

INAA, RNAA and IPAA were employed to determine upto 26 trace elements in 32 spices of 18 species and 16 pulses of 8 species originating from different localities. The results are compared with each other and t...

Y. Miyamoto; A. Kajikawa; J. H. Zaidi

2000-03-01T23:59:59.000Z

47

Trace element mobility during sub-seafloor alteration of basaltic glass from Ocean Drilling Program site 953 (off Gran Canaria)  

Science Journals Connector (OSTI)

Trace element concentrations of altered basaltic glass shards (layer silicates) and zeolites in volcaniclastic sediments drilled in the volcanic apron northeast of Gran Canaria during Ocean Drilling Program (ODP)...

A. Utzmann; T. Hansteen; H.-U. Schmincke

2002-08-01T23:59:59.000Z

48

Application of synchrotron radiation to x-ray fluorescence analysis of trace elements  

SciTech Connect

The development of synchrotron radiation x-ray sources has provided the means to greatly extend the capabilities of x-ray fluorescence analysis for determinations of trace element concentrations. A brief description of synchrotron radiation properties provides a background for a discussion of the improved detection limits compared to existing x-ray fluorescence techniques. Calculated detection limits for x-ray microprobes with micrometer spatial resolutions are described and compared with experimental results beginning to appear from a number of laboratories. The current activities and future plans for a dedicated x-ray microprobe beam line at the National Synchrotron Light Source (NSLS) of Brookhaven National Laboratory are presented.

Gordon, B.M.; Jones, K.W.; Hanson, A.L.

1986-08-01T23:59:59.000Z

49

Heterogeneous distribution of trace elements and fluorine in phosphogypsum by-product  

Science Journals Connector (OSTI)

Phosphogypsum (PG), a by-product from phosphate fertilizer production, is composed mainly of gypsum (CaSO42H2O) but also contains minor quantities of trace elements (TE), rare earth elements (REE) and F. Some elements may be elevated in quantities to be of environmental concern. This study determined the distribution of TE, REE and F among three size fractions (53 ?m) in \\{PGs\\} derived from three different phosphate rock sources. Fine fraction PG (<20 ?m) composed of <10% of total PG mass but was highly enriched in TE, REE and F compared to unfractionated PG. For PG derived from Idaho rock, Se in the fine fraction was enriched 830 times over soil and 415 times over shale while Cd was enriched in the fine fraction 70-fold over shale and soil. Fluorine was elevated 37 times in the fine fraction compared to shale. The same trends were observed for PG derived from Togo and Florida rocks. Elevated elemental concentrations in fine particles and particle sorting during PG deposition may contribute to chemical heterogeneity of PG repositories, and make elements more susceptible to mobilization processes, such as leaching and erosion. Removal of fines will improve the utilization of PG in other industries, such as for use as an amendment to agricultural soils.

J.M. Arocena; P.M. Rutherford; M.J. Dudas

1995-01-01T23:59:59.000Z

50

Trace element geochemical zoning in the Roosevelt Hot Springs thermal area, Utah  

SciTech Connect

Chemical interaction of thermal brines with reservoir rock in the Roosevelt Hot Springs thermal area has resulted in the development of distinctive trace element signatures. Geochemical analysis of soil samples, shallow temperature-gradient drill hole cuttings and deep drill hole cuttings provides a three-dimensional perspective of trace element distributions within the system. Distributions of As, Hg and Li provide the clearest expression of hydrothermal activity. Comparison of these distributions suggests that Li, followed by As and Hg, are progressively deposited by outward flowing, cooling, thermal fluids. Hg, in contrast to As and Li, is distributed only within the outer portions of the thermal system where temperatures are less than about 225/sup 0/C. Heating experiments indicate that extensive Hg remobilization in Roosevelt samples occurs at temperatures as low as 200/sup 0/ to 250/sup 0/C. This suggests that the distribution of Hg largely reflects the present system thermal configuration and that this distribution may be a useful soild geothermometer.

Christensen, O.D.; Moore, J.N.; Capuano, R.M.

1980-09-01T23:59:59.000Z

51

The distribution of ten trace elements and minerals in three lignite seams from the Mae Moh Mine, Thailand  

SciTech Connect

Understanding the association of major, minor and trace elements in lignites and their accompanying strata is important from a number of perspectives which include: potential health problems from environmental pollutants, rehabilitation after mining, combustion for power etc. The material which follows represents some preliminary observations on the mineralogy and distribution of 10 trace elements in lignites and accompanying sediments from the Mae Moh mine, Thailand. Samples collected from freshly exposed mine faces were air dried and analyzed for moisture and ash. Trace element concentrations were determined on {open_quotes}whole{close_quotes} coals and sediments by NAA and XRF. All chemical analyses are expressed as a fraction of the total dry sediment. Mineralogy of both LTA and sediments was determined by XRD. The chemistry and morphology of individual particles were examined by the Electron microprobe. The analyses are used to make some conclusions about the spatial occurrence of these elements within the seam and their partitioning between organic and inorganic phases.

Hart, B.; Powell, M.P.; Fyfe, W.S. [Univ. of Ontario (Canada)

1994-12-31T23:59:59.000Z

52

Emission factors for particles, elemental carbon, and trace gases from the Kuwait oil fires  

SciTech Connect

Emission factors are presented for particles, elemental carbon (i.e., soot), total organic carbon in particles and vapor, and for various trace gases from the 1991 Kuwait oil fires. Particle emissions accounted for {approximately} 2% of the fuel burned. In general, soot emission factors were substantially lower than those used in recent {open_quotes}nuclear winter{close_quotes} calculations. Differences in the emissions and appearances of some of the individual fires are discussed. Carbon budget data for the composite plumes from the Kuwait fires are summarized; most of the burned carbon in the plumes was in the form of CO{sub 2}. Fluxes are presented for several combustion products. 26 refs., 1 fig., 5 tabs.

Laursen, K.K.; Ferek, R.J.; Hobbs, P.V. [Univ. of Washington, Seattle, WA (United States); Rasmussen, R.A. [Oregon Graduate Institute of Science and Technology, Beaverton, OR (United States)

1992-09-20T23:59:59.000Z

53

Environmental impact assessment of radionuclides and trace elements at the Kurday U mining site, Kazakhstan  

Science Journals Connector (OSTI)

The Kurday uranium mining site in Kazakhstan operated from 1954 to 1965 as part of the USSR nuclear weapon programme. To assess the environmental impact of radionuclides and trace elements associated with the Kurday mining site, field expeditions were performed in 2006. In addition to in situ gamma and 220Rn dose rate measurements, sampling included at site fractionation of water as well as sampling of water, fish, sediment, soils and vegetation. The concentrations of U and associated trace metals were enriched in the Pit Lake and in the artesian water (U exceeding the WHO guideline value for drinking water), and decreased downstream from the mining area. Uranium, As, Mo and Ni were predominantly present as mobile low molecular mass species in waters, while a significant proportion of Cr, Mn and Fe were associated with colloids and particles. Due to oxidation of divalent iron in the artesian ground water upon contact with air, Fe served as scavenger for other elements, and peak concentrations of U-, Ra-isotopes, As and Mn were seen. Most radionuclides and trace elements were contained in minerals in soils and sediments, and good correlations were obtained between U and As, Cd, Mo and 226Ra. Based on sequential extractions, a significant fraction of U, Pb and Cd could be considered mobile. Radioactive particles carrying significant amount of trace metals may represent a hazard during strong wind events. The transfer of radionuclides and metals from soils or sediments to water was in general low. The Kd levels varied with the element in question, ranging from 0.5 to 3נ102L/kg d.w. for 238U being relatively mobile, 103 for 226Ra, As, Cd, Ni, to 104L/kg d.w. for Cu, Cr and Pb being rather inert The transfer of radionuclides and metals from soils to vegetation (TF) was low, while higher if the transfer to vegetation, especially underwater mosses, occurred via water (e.g., BCF 37L/kg w.w. for 238U and 3נ103L/kg w.w. for 226Ra). The transfer of Cd, Pb and As from water to fish liver (BCF) was rather high, showing \\{BCFs\\} in the range of 102103L/kg w.w., and may, if eaten, represent a health risk. Furthermore, the high Hg level in fish filet reaching 0.3mg/kg w.w. muscle and the tendency of biomagnification call for dietary restrictions. Total gamma and Rn dose rate to man amounted to about 6mSv/y, while the highest calculated dose rate for non-human species based on the ERICA Assessment Tool were obtained in aquatic plants, with calculated mean doses of 700 ?Gy/hr, mostly due to the U exposure. Overall, it is concluded that measures such as restricted access to the Pit Lake as well as dietary restrictions with respect to drinking water and intake of fish should be taken to reduce the environmental risk to man and biota.

B. Salbu; M. Burkitbaev; G. Strmman; I. Shishkov; P. Kayukov; B. Uralbekov; B.O. Rosseland

2013-01-01T23:59:59.000Z

54

Turtle With Mad Input (trace Unlimited Rays Through Lumped Elements) -- A Computer Program For Simulating Charged Particle Beam Transport Systems And Decay Turtle Including Decay Calculations  

E-Print Network (OSTI)

Turtle With Mad Input (trace Unlimited Rays Through Lumped Elements) -- A Computer Program For Simulating Charged Particle Beam Transport Systems And Decay Turtle Including Decay Calculations

Carey, D C

1999-01-01T23:59:59.000Z

55

POSTER INSTRUCTIONS International Symposium on Trace Elements in Man & Animals (TEMA 15) June 22-26, 2014  

E-Print Network (OSTI)

POSTER INSTRUCTIONS 15th International Symposium on Trace Elements in Man & Animals (TEMA 15) June 22-26, 2014 Orlando, Florida The B Resort in Walt Disney Poster Specifications Posters as during lunches on Monday and Tuesday. Posters will be limited to 4 feet high x 3 feet wide (1.22M high x

Jawitz, James W.

56

Correlation of mineralogy and trace element leaching behavior in modified in situ spent shales from Logan Wash, Colorado  

SciTech Connect

Oil shale retorting induces mineral and chemical reactions to occur on the macroscopic and microscopic levels in the kerogen-bearing marlstone. The nature and extent of the reactions is dependent upon process variables such as maximum temperature, time at temperature, atmosphere, and raw shale composition. This report describes the investigation of the mineral, chemical, and trace element release properties of spent shales retrieved from an experimental in situ retort at Occidental Oil Shale, Inc.'s Logan Wash site in Garfield County, Colorado. Correlation between mineralogy of the spent materials and the mobility of major, minor, and trace elements are indicated, and relationships with important process parameters are discussed. The progress of carbonate decomposition reactions and silication reactions is indicative of the processing conditions experienced by the shale materials and influences the mobility of major, minor, and trace elements when the solids are contacted by water. Shale minerals that are exposed to the extreme conditions reached in underground retorting form high temperature product phases including akermanite-gehlenite and diopside-augite solid solutions, kalsilite, monticellite, and forsterie. The persistence of relatively thermally stable phases, such as quartz, orthoclase, and albite provide insight into the extremes of processing conditions experienced by the spent shales. Leachate compositions suggest that several trace elements, including vanadium, boron, fluoride, and arsenic are not rendered immobile by the formation of the high-temperature silicate product phase akermanite-gehlenite.

Peterson, E.J.; O'Rourke, J.A.; Wagner, P.

1981-01-01T23:59:59.000Z

57

Trace element and isotope geochemistry of geothermal fluids, East Rift Zone, Kilauea, Hawaii  

SciTech Connect

A research program has been undertaken in an effort to better characterize the composition and the precipitation characteristic of the geothermal fluids produced by the HGP-A geothermal well located on the Kilauea East Rift Zone on the Island of Hawaii. The results of these studies have shown that the chemical composition of the fluids changed over the production life of the well and that the fluids produced were the result of mixing of at least two, and possibly three, source fluids. These source fluids were recognized as: a sea water composition modified by high temperature water-rock reactions; meteoric recharge; and a hydrothermal fluid that had been equilibrated with high temperature reservoir rocks and magmatic volatiles. Although the major alkali and halide elements show clearly increasing trends with time, only a few of the trace transition metals show a similar trend. The rare earth elements, were typically found at low concentrations and appeared to be highly variable with time. Studies of the precipitation characteristics of silica showed that amorphous silica deposition rates were highly sensitive to fluid pH and that increases in fluid pH above about 8.5 could flocculate more than 80% of the suspended colloidal silica in excess of its solubility. Addition of transition metal salts were also found to enhance the recovery fractions of silica from solution. The amorphous silica precipitate was also found to strongly scavenge the alkaline earth and transition metal ions naturally present in the brines; mild acid treatments were shown to be capable of removing substantial fractions of the scavenged metals from the silica flocs yielding a moderately pure gelatinous by-product. Further work on the silica precipitation process is recommended to improve our ability to control silica scaling from high temperature geothermal fluids or to recover a marketable silica by-product from these fluids prior to reinjection.

West, H.B.; Delanoy, G.A.; Thomas, D.M. (Hawaii Univ., Honolulu, HI (United States). Hawaii Inst. of Geophysics); Gerlach, D.C. (Lawrence Livermore National Lab., CA (United States)); Chen, B.; Takahashi, P.; Thomas, D.M. (Hawaii Univ., Honolulu, HI (United States) Evans (Charles) and Associates, Redwood City, CA (United States))

1992-01-01T23:59:59.000Z

58

Distribution of arsenic, selenium, and other trace elements in high pyrite Appalachian coals: Evidence for multiple episodes of pyrite formation  

Science Journals Connector (OSTI)

Pennsylvanian coals in the Appalachian Basin host pyrite that is locally enriched in potentially toxic trace elements such as As, Se, Hg, Pb, and Ni. A comparison of pyrite-rich coals from northwestern Alabama, eastern Kentucky, and West Virginia reveals differences in concentrations and mode of occurrence of trace elements in pyrite. Pyrite occurs as framboids, dendrites, or in massive crystalline form in cell lumens or crosscutting veins. Metal concentrations in pyrite vary over all scales, from microscopic to mine to regional, because trace elements are inhomogeneously distributed in the different morphological forms of pyrite, and in the multiple generations of sulfide mineral precipitates. Early diagenetic framboidal pyrite is usually depleted in As, Se, and Hg, and enriched in Pb and Ni, compared to other pyrite forms. In dendritic pyrite, maps of As distribution show a chemical gradient from As-rich centers to As-poor distal branches, whereas Se concentrations are highest at the distal edges of the branches. Massive crystalline pyrite that fills veins is composed of several generations of sulfide minerals. Pyrite in late-stage veins commonly exhibits As-rich growth zones, indicating a probable epigenetic hydrothermal origin. Selenium is concentrated at the distal edges of veins. A positive correlation of As and Se in pyrite veins from Kentucky coals, and of As and Hg in pyrite-filled veins from Alabama coals, suggests coprecipitation of these elements from the same fluid. In the Kentucky coal samples (n=18), As and Se contents in pyrite-filled veins average 4200ppm and 200ppm, respectively. In Alabama coal samples, As in pyrite-filled veins averages 2700ppm (n=34), whereas As in pyrite-filled cellular structures averages 6470ppm (n=35). In these same Alabama samples, Se averages 80ppm in pyrite-filled veins, but was below the detection limit in cell structures. In samples of West Virginia massive pyrite, As averages 1700ppm, and Se averages 270ppm (n=24). The highest concentration of Hg (?102ppm) is in Alabama pyrite veins. Improved detailed descriptions of sulfide morphology, sulfide mineral paragenesis, and trace-element concentration and distribution allow more informed predictions of: (1) the relative rate of release of trace elements during weathering of pyrite in coals, and (2) the relative effectiveness of various coal-cleaning procedures of removing pyrite. For example, trace element-rich pyrite has been shown to be more soluble than stoichiometric pyrite, and fragile fine-grained pyrite forms such as dendrites and framboids are more susceptible to dissolution and disaggregation but less amenable to removal during coal cleaning.

S.F. Diehl; M.B. Goldhaber; A.E. Koenig; H.A. Lowers; L.F. Ruppert

2012-01-01T23:59:59.000Z

59

doi:10.1016/j.gca.2004.06.037 Effect of melt composition on the partitioning of trace elements  

E-Print Network (OSTI)

coefficients for the rare earth elements and for Th, Nb, and Ta reveal a strong influence of melt composition amounts of rare earth elements (REE) and high field strength elements (HFSE), it may significantly affectdoi:10.1016/j.gca.2004.06.037 Effect of melt composition on the partitioning of trace elements

60

Distribution of hazardous air pollutant trace elements, total sulfur, and ash in coals from five Tertiary basins in the Rocky Mountain Region  

SciTech Connect

Arithmetic mean values of the contents of hazardous air pollutant (HAP) trace elements named in the 1990 Clean Air Act Amendments (antimony, arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, selenium, and uranium), ash, and total sulfur were statistically compared on a whole-coal basis for Paleocene coals from five Tertiary basins in the Rocky Mountain Region. The study of proximate and elemental analyses indicate a relationship between trace element contents and paleogeography.

Ellis, M.S.; Stricker, G.D.; Flores, R.M. [Geological Survey, Denver, CO (United States)

1994-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Chemical composition and some trace element contents in coals and coal ash from Tamnava-Zapadno Polje Coal Field, Serbia  

SciTech Connect

The chemical compositions and trace element contents (Zn, Cu, Co, Cr, Ni, Pb, Cd, As, B, Hg, Sr, Se, Be, Ba, Mn, Th, V, U) in coal and coal ash samples from Tamnava-Zapadno Polje coal field in Serbia were studied. The coal from this field belongs to lignite. This high volatility coal has high moisture and low S contents, moderate ash yield, and high calorific value. The coal ash is abundant in alumosilicates. Many trace elements such as Ni > Cd > Cr > B > As > Cu > Co > Pb > V > Zn > Mn in the coal and Ni > Cr > As > B > Cu > Co = Pb > V > Zn > Mn in the coal ash are enriched in comparison with Clarke concentrations.

Vukasinovic-Pesic, V.; Rajakovic, L.J. [University of Montenegro, Podgorica (Montenegro)

2009-07-01T23:59:59.000Z

62

Observations on the incorporation of trace elements in halite of Oligocene salt beds, Bourg-en-Bresse Basin, France  

SciTech Connect

It is common practice to employ trace elements found in chloride salts as indicators of the conditions of deposition. Because some halite contains abundant fluid inclusions, it is necessary to separate the salt from the inclusions before analysis. This study presents the data derived from the use of a simple preparative technique which permits analysis of the trace elements in solid halite, and provides a guide to test the success in elimination of the contaminants contained in the fluid inclusions. The differentiation is accomplished simply by crushing the salt in alcohol followed by separate analysis of the fluid and solid components, thus yielding accurate trace element concentrations in the solids (crystal lattice, dislocations, and grain boundaries) and the fluids. Br and K are present both in the solid and liquid phases of the halite, but Mg is exclusively in the fluid inclusions. The elimination of the Mg from the analysis of the solid phase may thus be employed as a monitor to indicate the degree of purification of the samples being analyzed.

Moretto, R. (Universite de Nancy I, Vandoeuvre-les-Nancy (France))

1988-12-01T23:59:59.000Z

63

Washability of trace elements in product coals from Illinois mines. Technical report, September 1--November 30, 1993  

SciTech Connect

The existing trace element washability data on Illinois coals are based on float-sink methods, and these data are not applicable to modern froth flotation or column flotation processes. Particularly, there is a lack of washability data on samples from modern preparation plants, as well as other product (as-shipped) coals. The goal of this project is to provide the needed trace element washability data on as-shipped coals that were collected during 1992--1993 from Illinois mines. The results generated by this project will promote Illinois coals for such prospective new markets as feed materials for advanced gasification processes, for synthetic organic chemicals, and to meet new environmental requirements for their use in utility steam generation. During the first quarter, each of 34 project samples were ground to about {approximately}100 mesh size and cleaned by use of a special froth flotation technique (release analysis). The flotation products were analyzed for ash, moisture, and heating value (BTU). The data were then used to construct a series of different-washability curves. For example, these curves can show variation in BTU or combustible recovery as a function of the amount of ash or S rejected, or as a function of the weight of the flotation products. From the relationship between %cumulative BTU and %cumulative weight, nine composite samples each having 80% of the total BTU were prepared from the individual flotation products and submitted for trace element analysis.

Demir, I.; Ruch, R.R.; Harvey, R.D.; Steele, J.D. [Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States). Geological Survey

1993-12-31T23:59:59.000Z

64

Method for quantitative determination and separation of trace amounts of chemical elements in the presence of large quantities of other elements having the same atomic mass  

DOE Patents (OSTI)

Photoionization via autoionizing atomic levels combined with conventional mass spectroscopy provides a technique for quantitative analysis of trace quantities of chemical elements in the presence of much larger amounts of other elements with substantially the same atomic mass. Ytterbium samples smaller than 10 ng have been detected using an ArF* excimer laser which provides the atomic ions for a time-of-flight mass spectrometer. Elemental selectivity of greater than 5:1 with respect to lutetium impurity has been obtained. Autoionization via a single photon process permits greater photon utilization efficiency because of its greater absorption cross section than bound-free transitions, while maintaining sufficient spectroscopic structure to allow significant photoionization selectivity between different atomic species. Separation of atomic species from others of substantially the same atomic mass is also described.

Miller, C.M.; Nogar, N.S.

1982-09-02T23:59:59.000Z

65

Comparative bioaccumulation of trace elements between Nautilus pompilius and N.1 macromphalus (Cephalopoda: Nautiloidea) from Vanuatu and New-Caledonia2  

E-Print Network (OSTI)

clearly highlighted that the digestive gland32 played a key role in the bioaccumulation and storage of Ag are exposed to trace elements that are present in their diet and dissolved in49 seawater. This double exposure bioavailability of53 the metal in diet and seawater (Rainbow and Wang, 2001). Comparative analysis of trace54

Paris-Sud XI, Université de

66

Trace element partitioning between apatite and silicate melts Stefan Prowatke a,1  

E-Print Network (OSTI)

). The experiments were conducted at pressures of 1.0 GPa and temperatures of 1250 °C. The rare earth elements (La polymerisation of the melt, apatite/melt partition coefficients for the rare earth elements increase for about occurring apatites contain large amounts of the rare earth elements and Sr, it has been well known

67

Precise lattice location of trace elements within minerals and at their surfaces with x?ray standing waves (abstract)  

Science Journals Connector (OSTI)

Using x?ray standing waves (XSW) generated by dynamical Bragg diffraction we have precisely measured lattice locations of trace elements within and at the surface of mineral single crystals. Natural calcite samples were cleaved along the (1014) plane to obtain pristine surfaces. After cleavage some samples were reacted with a dilute aqueous Pb solution to obtain Pb?sorbed surfaces. XSW measurements were then performed on both unreacted and reacted samples using the calcite (1014) Bragg reflection. Results of these XSW measurements show that the naturally occurring trace element M substitutes for C. On the Pb?reacted calcite sample Pb was located on the calcite (1014) lattice plane where C atoms also reside. Our measurements clearly demonstrate a new and powerful application of synchrotron radiation in earth and environmental sciences to provide element?specific atomic?scale structural information within and at the surface of minerals. The XSW measurements were made at the NSLS X15A and X25 beamlines.

Y. Qian

1996-01-01T23:59:59.000Z

68

JV Task-123 Determination of Trace Element Concentrations at an Eastern Bituminous Coal Plant Employing an SCR and Wet FGD  

SciTech Connect

The Energy & Environmental Research Center (EERC), in partnership with Babcock & Wilcox (B&W) and with funding from U.S. Department of Energy (DOE), conducting tests to prove that a high level of mercury control (>90%) can be achieved at a power plant burning a high-sulfur eastern bituminous coal. With funding from the Electric Power Research Institute (EPRI), DOE, and Center for Air Toxic Metals{reg_sign} (CATM{reg_sign}) Affiliates Program, the EERC completed an additional sampling project to provide data as to the behavior of a number of trace elements across the various pollution control devices, with a special emphasis on the wet flue gas desulfurization (FGD) system. Results showed that the concentrations of almost all the elements of interest leaving the stack were very low, and a high percentage of the trace elements were captured in the electrostatic precipitator (ESP) (for most, >80%). Although, with a few exceptions, the overall mass balances were generally quite good, the mass balances across the wet FGD were more variable. This is most likely a result of some of the concentrations being very low and also the uncertainties in determining flows within a wet FGD.

Dennis Laudal

2008-05-01T23:59:59.000Z

69

Effect of agricultural use of phosphogypsum on trace elements in soils and vegetation  

Science Journals Connector (OSTI)

The problem of the disposal of phosphogypsum, one of the main industrial wastes of phosphorus fertilizer production, is reviewed, from the point of view of element pollution of phosphate raw materials, when it is introduced to soil. When phosphogypsum from different phosphorus producing plants in the USSR is used in agriculture, the main element-pollutants are fluorine, sulphur, strontium and rare earth elements. Their concentration in soils and vegetation exceeds Clark values by 20100 times. The necessity for complex biogeochemical investigations to identify the hazards from these chemical elements in the environment is discussed.

A.V. Gorbunov; M.V. Frontasyeva; S.F. Gundorina; T.L. Onischenko; B.B. Maksjuta; Chen Sen Pal

1992-01-01T23:59:59.000Z

70

Trace Elemental Variation in Dosidicus Gigas Statoliths Using LA-ICP-MS  

E-Print Network (OSTI)

classified as distinct group for the first time using these methods. Elemental fingerprint signatures were found to be significantly different at multiple ontogenic growth regions of the statolith. Seattle and California paralarvae exhibited similar...

Arbuckle, Nancy 1980-

2012-08-24T23:59:59.000Z

71

The distribution and association of trace elements in the bitumen, kerogen and pyrolysates from New Albany oil shale  

SciTech Connect

The distribution and association of trace elements in bitumen, kerogen and pyrolysates from New Albany oil shale were investigated using instrumental neutron activation analysis (INAA), x-ray diffraction (XRD), electron microprobe x-ray fluorescence (EMP-XRF), liquid chromatography, ultra-violet spectroscopy and mass spectrometry. The kerogen was found to contain several HCl/HF resistant minerals (determined by XRD), including pyrite, marcasite, chalcopyrite, rutile, and anatase, and the neoformed mineral ralstonite. Kerogens (prepared at UNOCAL, CA) which were fractionated in an aqueous ZnBr[sub 2] solution were found to contain [approximately]20% less acid-resistant minerals than traditional' HCl/HF isolated kerogens and were contaminated with Zn and Br. Kerogens (prepared at the University of Munich) treated with SnCl[sub 2]/H[sub 3]PO[sub 4] at 150-270[degrees]C (Kiba) and/or SnCl[sub 2]/HCl at 110[degrees]C were found to contain <10% of their original pyrite/marcasite (FeS[sub 2]), but were contaminated with large amounts of Sn. The Kiba treatment also appeared to demetallate Ni(II) and VO(II) porphyrins. The inorganic and organic associations of trace elements in New Albany kerogen were studied by analysis of kerogen fractions and a mineral residue ([approximately]85% FeS[sub 2]) obtained through density separations. The degree of association of several elements (As, Co, Mn, Mo, Ni, Sb, and Se) with FeS[sub 2] was determined through the analysis of individual mineral grains by EMP-XRF and by analysis of the mineral residue treated with dilute HNO[sub 3] to remove FeS[sub 2]. These studies indicated that essentially all of the V and [approximately]95% of the Ni present in New Albany kerogen is organically associated. Methods which are designed to account for the inorganic associations of trace elements in kerogens, including methods based on physical methods of separation, chemical removal of FeS[sub 2], EMP-XRF and low temperature ashing, are compared.

Mercer, G.E.

1992-01-01T23:59:59.000Z

72

Long-term leaching of trace elements in a heavily sludge-amended silty clay loam soil  

SciTech Connect

Analysis by ICP-MS of shallow groundwater collected at a field site in New York that had been heavily loaded with sewage sludge more than 15 years earlier revealed elevated concentrations of Cu, Zn, Sr, Rb, Mo, Cd, As, Cr, Ni, Sb, W, Ag, Hg, and Sn compared with a nearby control site. Enhanced leaching of some elements from this near-neutral, fine-textured (silty clay loam) soil could be explained by exchange of soil-bound elements by components of the added sludge. For most of the heavy metals, however, increased leaching was a response to the high metal loadings in the soil, probably facilitated by higher dissolved organic matter in the leachate. Laboratory-determined distribution coefficients, K{sub D}, for the metals in newly prepared sludge/soil mixtures were lower than K{sub D} values of the field-aged sludge-treated soil, suggesting that metal mobility may have been substantially higher shortly after sludge application than many years later. Cumulative losses of certain trace elements from the topsoil have been estimated relative to Cr, a comparatively immobile element. These suggest that relative long-term losses range from 20 to 80%, with the order being: Sr, Mo, Sb {gt} Ni, Cd, Cu {gt} Zn, Ag. Generally, those elements with the smallest K{sub D} values (most soluble) measured recently in the soil had the largest loss estimates. However, present leaching loss rates are too slow to explain the estimated relative losses of several of these elements from the topsoil over the 15 or more years since sludge application.

McBride, M.B.; Richards, B.K.; Steenhuis, T.; Spiers, G.

1999-09-01T23:59:59.000Z

73

Measurement of particulate matter and trace elements from a coal-fired power plant with electrostatic precipitators equipped the low temperature economizer  

Science Journals Connector (OSTI)

Abstract The particulate matter and trace elements from a 660MW coal-fired power plant boiler which equipped with a novel electrostatic precipitator were sampled and analyzed. To promote the thermal efficiency of power plants, a low temperature economizer was installed at the inlet of electrostatic precipitator to collect the heat generated from flue gas. The low temperature economizer can reduce flue gas temperature, and then affect the operation of electrostatic precipitator. Therefore, this experiment was carried out to investigate the collection characteristics of this novel electrostatic precipitator on particulate matter. In addition, the distribution of trace elements in solid combustion residues was also studied. The results indicate that the low temperature economizer can markedly decrease the amount of particulate matter at the outlet of electrostatic precipitator. The collection efficiency of electrostatic precipitator on particulate matter is significantly improved by the low temperature economizer, whereby the collection efficiencies of PM2.5 and PM1.0 can reach 99.7% and 99.2%, respectively. Most of the trace elements remain in the fly ash collected by the electrostatic precipitator, and less than 10% remain in the bottom ash, but very rare emit from the electrostatic precipitator. The low temperature economizer not only reduces the emission of particulate matter, but also diminishes the emissions of trace elements in flue gas. The enrichment characteristics of trace elements in submicron particles were also studied.

Chao Wang; Xiaowei Liu; Dong Li; Junping Si; Bo Zhao; Minghou Xu

2014-01-01T23:59:59.000Z

74

Trace element chemistry of Apollo 14 lunar soil from Fra Mauro  

Science Journals Connector (OSTI)

Analytical data are presented for Apollo 14 fines ( Mauro Formation, possessed high concentrations (100200 chondrites) for many elements, prior to the excavation of the mare basins. A correlation may exist between Gd/Eu and Zr/Hf ratios in lunar materials.

S.R. Taylor; Patricia Muir; Maureen Kaye

1971-01-01T23:59:59.000Z

75

Association of trace elements with mineral species in the New Albany oil shale  

SciTech Connect

X-Ray diffraction (XRD), electron microprobe (EMP), scanning electron microscopy (SEM) and neutron activation analysis (NAA) were used to identify mineral species in the New Albany shale and kerogen isolates. Elemental abundances were determined by NAA and distributions of Ni, V, As, and other elements with-in mineral grains were determined by EMP-XRF. Vanadium in the New Albany shale was found to be associated primarily with clay minerals (illite, montmorrillonite). In the New Albany kerogen, Ni and V were shown to be predominantly associated with the organic matrix. Pyrite (and/or marcasite) was shown to occur in two forms, a euhedral variety and as framboidal clusters. The Ni content of the framboidal variety was found to be higher than that of the euhedral pyrite.

Fitzgerald, S.L.; Day, J.W.; Mercer, G.E.; Filby, R.H. (Washington State Univ., Pullman (USA))

1989-03-01T23:59:59.000Z

76

Determination of selected trace elements in human head hair by neutron activation analysis  

E-Print Network (OSTI)

the scope of this discussion. The final category of data contains barium and strontium. There was no data in the literature to use as a comparison, therefore the values of 49 ppm for barium and 87 ppm for strontium must stand on their own merit...) in Japan and of course, the current work in Texas. The results of the correlation analysis were that there were no significant correlations between any of the elements except in the case of strontium and barium which yielded a Pearson correlation coef...

Courson, Leonard Austin

2012-06-07T23:59:59.000Z

77

Multiple stirred-flow chamber assembly for simultaneous automatic fractionation of trace elements in fly ash samples using a multisyringe-based flow system  

SciTech Connect

There is a current trend in automation of leaching tests for trace elements in solid matrixes by use of flow injection based column approaches. However, as a result of the downscaled dimensions of the analytical manifold and execution of a single extraction at a time, miniaturized flow-through column approaches have merely found applications for periodic investigations of trace element mobility in highly homogeneous environmental solids. A novel flow-based configuration capitalized on stirred-flow cell extraction is proposed in this work for simultaneous fractionation of trace elements in three solid wastes with no limitation of sample amount up to 1.0 g. A two-step sequential extraction scheme involving water and acetic acid (or acetic acid/acetate buffer) is utilized for accurate assessment of readily mobilizable fractions of trace elements in fly ash samples. The W automated extraction system features high tolerance to flow rates ({<=} 6 mL min{sup -1}) and, as opposed to operationally defined batchwise methods, the solid to liquid ratio is not a critical parameter for, determination of overall readily leachable trace elements provided that exhaustive extraction is ensured. Analytical performance of the dynamic extractor is evaluated for fractionation analysis of a real coal fly ash and BCR-176R fly ash certified reference material. No significant differences were found at the 0.05 significance level between summation of leached concentrations in each fraction plus residue and concentration values of BCR-176R, thus revealing the accuracy of the automated method. Overall extractable pools of trace metals in three samples are separated in less than 115 min, even for highly contaminated ashes, versus 18-24 h per fraction in equilibrium leaching tests. The multiple stirred-flow cell assembly is thus suitable for routine risk assessment studies of industrial solid byproduct.

Boonjob, W.; Miro, M.; Cerda, V. [Mahidol University, Bangkok (Thailand). Faculty of Science

2008-10-01T23:59:59.000Z

78

Changes in trace element contents in ashes of oil shale fueled PF and CFB boilers during operation  

Science Journals Connector (OSTI)

Abstract Two oil shale combustion technologies, pulverized firing (PF) and circulated fluidized bed (CFB) were compared with respect to partitioning of selected elements (Ba, Cd, Co, Cr, Cu, Hg, Mn, Mo, Ni, Pb, Rb, Sb, Sn, Sr, Th, Tl, U, V, and Zn) in the ashes along the flue gas ducts. The ash samples were characterized by high-resolution ICP-MS. The average contents of toxic heavy metals in fly ash samples from the CFB boiler are lower compared to the PF boiler. Main differences in trace element contents between combustion technologies were as follows: Cd content in the fly ash samples of PF boiler was up to 0.9mg/kg while in CFB boiler it remained below 0.1mg/kg in all analyzed ash samples; Hg was observed in the ashes of electrostatic precipitator (ESP) of CFB boiler while in the PF boiler it was close to or below detection limit. In the PF boiler content of Sn was detected only in the ashes of ESPs, while in CFB boiler it was evenly distributed between bottom and fly ash samples. Highest content among heavy metals in ash samples was observed for Pb in the last field of ESP of the PF boiler (142mg/kg).

Janek Reinik; Natalya Irha; Eiliv Steinnes; Gary Urb; Jekaterina Jefimova; Eero Piirisalu; Jri Loosaar

2013-01-01T23:59:59.000Z

79

Simultaneous mobilization of trace elements and polycyclic aromatic hydrocarbon (PAH) compounds from soil with a nonionic surfactant and [S,S]-EDDS in admixture: Metals  

Science Journals Connector (OSTI)

This study evaluated the efficacy of soil washing with a nonionic surfactant (Brij98) in combination with a complexing reagent (ethylenediaminedisuccinic acid, [S,S]-EDDS) for the simultaneous mobilization of macro- and trace elements (MTEs) and PAH compounds from a field-contaminated soil. Soil fractionation studies indicated that an appreciable fraction of the Al, Ca, Cu, Fe and Mn was associated with the residual fraction but that much of the other trace elements (As, Cd, Cr, Ni, Pb and Zn) might be susceptible to soil washing. Ultrasonically aided mixing of the field contaminated soil with Brij98 and a sparing quantity (2mmol) of [S,S]-EDDS, simultaneously mobilized virtually all of the benzo[?]pyrene {B(a)P} and chrysene (CRY) and appreciable quantities of the trace elements (Cd, Cr, Mn, Ni, Pb, Zn) burdens. The recovery of both \\{PAHs\\} and trace elements were increased from the soil organic matter (SOM)-rich soil. This report concerns the fate of \\{MTEs\\} during soil washing. Multiple ultra-sonically aided washes (five or nine) with the same dosage of reagents mobilized virtually all of \\{PAHs\\} and decreased the levels of Cd, Cr, Ni, Pb and Zn to comply with recommended maxima. By contrast, the levels of As and Cu remained excessive after the treatments.

Yuexiang Wen; William D. Marshall

2011-01-01T23:59:59.000Z

80

TTG magmatism in the Congo craton; a view from major and trace element geochemistry, RbSr and SmNd systematics: case  

E-Print Network (OSTI)

TTG magmatism in the Congo craton; a view from major and trace element geochemistry, Rb­Sr and Sm of the Sangmelima region (Ntem complex, Congo craton) in southern Cameroon range in modal composition from rocks. TTG intrusions in the Sangmelima region represent a major Archaean accretion event in the Congo craton

Siebel, Wolfgang

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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81

The evolution of a complex type B allende inclusion: An ion microprobe trace element study  

SciTech Connect

USNM 5241 is a Type B1 refractory inclusion from Allende, first described by El Goresy et al. (1985), that consists of a 1.2 mm-thick melilite-rich and spinel-poor mantle enclosing a 0.6 cm-radius spinel-rich core; the inclusion contains xenoliths of spinel-free fassaite {plus minus} melilite {plus minus} anorthite incorporated within the spinel-rich core. Detailed ion microprobe analyses of individual phases in 5241 show that the rare earth element (REE) concentrations in mantle melilite vary irregularly with increasing distance from the rim of the inclusion, at first decreasing immediately below the rim and then remaining constant between {approximately}0.4 and 1.0 mm. More than 1.0 mm from the rim, the REE concentrations again decrease. Although counterintuitive in the context of traditional fractional crystallization models, these REE variations are in fact broadly consistent with such a model in light of recent experimental measurements of D{sub REE3+ (mel)}, that show a strong inverse correlation of D with the akermanite content of the melilite. Local variations, over distances of <20 {mu}m, in the akermanite content of mantle melilite--as much as 5-10 mol% Ak--with accompanying fluctuations in REE contents, are due to reaction of gehlenitic melilite with tiny inclusions of fassaite, producing narrow zones of more akermanitic melilite surrounding more fassaitic pyroxene. The authors interpret 5241 as having formed largely by fractional crystallization during the first {approximately}40% of its solidification; this was followed by fractional crystallization + xenolith assimilation during the last 60%.

MacPherson, G.J. (Smithsonian Institution, Washington, DC (USA)); Crozaz, G.; Lundberg, L.L. (Washington Univ., St. Louis, MO (USA))

1989-09-01T23:59:59.000Z

82

Telling friends from foes : strontium isotope and trace element analysis of companion burials from Pusilh, Toledo District, Belize  

E-Print Network (OSTI)

uranium, and the rare earth elements (REE) can readilyof uranium and the rare earth elements are extremely low andconsumed in vivo. The rare earth element lanthanum, like

Somerville, Andrew D.

2010-01-01T23:59:59.000Z

83

Electrostatic Precipitator Collection Efficiency and Trace Element Emissions from Co-Combustion of Biomass and Recovered Fuel in Fluidized-Bed Combustion  

Science Journals Connector (OSTI)

Electrostatic Precipitator Collection Efficiency and Trace Element Emissions from Co-Combustion of Biomass and Recovered Fuel in Fluidized-Bed Combustion ... In this investigation, electrostatic precipitator fractional collection efficiency and trace metal emissions were determined experimentally at a 66 MW biomass-fueled bubbling fluidized-bed combustion plant. ... The solid fuel combustion-generated particle emissions typically consist of two types of particles:? fine particles approximately 0.1?1 ?m in diameter that are formed from the ash-forming species that are volatilized during combustion and residual ash particles larger than 1 ?m in diameter that are formed from mineral impurities in the fuels (4). ...

Terttaliisa Lind; Jouni Hokkinen; Jorma K. Jokiniemi; Sanna Saarikoski; Risto Hillamo

2003-05-08T23:59:59.000Z

84

Oxidation of trace amounts of transplutonium elements to the tetravalent state in solutions of mineral acids and their stabilities  

SciTech Connect

The behavior of trace amounts of americium(IV) in sulfuric and nitric acid solutions as a function of the mineral acid, potassium phosphotungstate, and ammonium persulfate concentrations was investigated. The stability of americium(IV) was studied. The optimal conditions and time of oxidation of trace amounts of americium to the tetravalent state were found on the basis of the experimental data obtained.

Milyukova, M.S.; Varezhkina, N.S.; Kuzovkina, E.V.; Malikov, D.A.; Myasoedov, B.F.

1989-01-01T23:59:59.000Z

85

PCB, PAH and trace element exposure in barn swallows nesting on the Grand Calumet River, IN, watershed  

SciTech Connect

The Grand Calumet River/Indiana Harbor Canal (GCR/IHC) is an International Joint Commission Area of Concern (AOC) and is heavily contaminated with polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs) and trace elements. Barn swallow hatchlings and nestlings were collected from four bridges which span the GCR/IHC and a reference location. PCB and PAH concentrations in hatchlings and nestlings were significantly higher in colonies along the GCR/IHC than the reference colony. For example, mean PCB concentrations in hatchlings and nestlings were significantly higher in colonies along the GCR/IHC than the reference colony. For example, mean PCB concentrations in hatchlings were 0.04 {micro}g/g wet weight at the reference colony and 20.42 {micro}g/g at one colony on the GCR/IHC; mean concentrations of PAHs were 0.05 {micro}g/g at the reference colony and 0.15 {micro}g/g at one colony on the GCR/IHC. PCBs accumulated in nestlings at a rate of 18.2 {micro}g/day at one colony on the GCR/IHC compared to 0.03 {micro}g/day at the reference colony. These data suggest that contaminants in the water and sediment of the GCR/IHC are being incorporated into the vertebrate food chain via aquatic insects. Because the contaminant data in the barn swallow hatchlings and nestlings seem to reflect the sediment chemistry nearby the colony, this study suggests that barn swallows are a useful biomonitoring species for this AOC.

Custer, T.W.; Sparks, D.W. [National Biological Service, La Crosse, WI (United States). Upper Mississippi Science Center; [Fish and Wildlife Service, Bloomington, IN (United States)

1995-12-31T23:59:59.000Z

86

Trace elements found in the fuel and in-furnace fine particles collected from 80MW BFB combusting solid recovered fuel  

Science Journals Connector (OSTI)

The main fine particle (dpSRF) combustion the main elements were found to be: Ba, Br, Cr, Cu, Fe, Pb, Sb, Sn and Zn. Fine particle composition is presented for 6 different furnace heights of a bubbling fluidized bed (BFB) boiler. As the fine particles are formed of vaporized ash species the experimental results are discussed with the support of thermodynamic equilibrium modeling for estimating the forms of the gaseous elements in the furnace. The occurrence of bromine was found to be similar to chlorine as the main forms of bromine in the furnace were estimated to be KBr(g) and NaBr(g) complemented with CuBr3(g). It is proposed that the trace elements mentioned originate mainly from plastics and rubber where they are used as production additives, stabilisers, dyes, colorants and flame retardants. Cr, Cu and Zn may originate to a large extent from alloys and other metallic impurities. SEM-EDS analyses carried out for the SRF supports the postulated origin of the elements.

P. Vainikka; D. Lindberg; A. Moilanen; H. Ollila; M. Tiainen; J. Silvennoinen; M. Hupa

2013-01-01T23:59:59.000Z

87

Thermodynamic evaluation of the compounds of gold, silver, and other trace elements formed upon the combustion of brown coal  

Science Journals Connector (OSTI)

The thermodynamically most probable main compounds of Ag, Au, Ge, Se, Sr, U, and ash-forming elements formed upon the combustion of brown coal, which was close in the composition of organic and mineral matter ...

M. Ya. Shpirt; A. A. Lavrinenko; I. N. Kuznetsova

2013-09-01T23:59:59.000Z

88

PARTITIONING OF MAJOR, MINOR, AND TRACE ELEMENTS DURING SIMULATED IN SITU OIL SHALE RETORTING IN A CONTROLLED-STATE RETORT  

E-Print Network (OSTI)

elements. Over 25% of the raw shale gas five groups productsthe oil, in the raw oil shale gas, consequence of retortinggood product raw oil shale and input gases that is accounted

Fox, J. P.

2011-01-01T23:59:59.000Z

89

Trace element disequilibria and magnesium isotope heterogeneity in 3655A: Evidence for a complex multi-stage evolution of a typical Allende Type B1 CAI  

SciTech Connect

We used the Panurge ion microprobe to measure concentrations of the rare earth elements (REEs), Ba, Hf, and Sr in melilite, clinopyroxene. plagioclase, and perovskite and Mg isotopes in plagioclase, spinel, melilite, fassaite, hibonite, grossular, and monticellite from the Allende Type B1 calcium-, aluminum-rich inclusion (CAI), USNM 3655A. The distribution and concentration of Ba and the REE in melilite from the melilite-rich mantle of 3655A are unlike those predicted from melilite-melt REE partitioning experiments for closed system crystal fractionation. REE concentrations are lower than expected in the first crystallized gehlenitic melilite, increase rapidly to higher than expected concentrations in melilite with intermediate akermanite contents (Ak30-Ak40), and decrease as expected only during the late stage of mantle crystallization. Barium concentrations in melilite are 10-50 times those expected, and the LREE/HREE ratio increases continuously rather than remaining constant. The unexpected distribution of trace elements in melilite reflects a progressive enrichment of trace elements in the melt during the early stages of crystallization. A partial explanation for this observation is the dissolution of precursor perovskite that contained half or more of the total REE budget of the inclusion. The Mg isotope record of 3655A is distinguished by four salient features: (1) large {sup 26}Mg excesses correlated with the respective Al/Mg ratios in plagioclase, melilite, and hibonite, (2) F{sub Mg}, the mass-dependent fractionation of Mg, is positive. with enrichment of the heavier Mu isotopes in all primary phases, (3) a heterogeneous distribution of F{sub Mg} values. with F{sub Mg} in melilite systematically greater than in either spinel or fassaite, and (4) isotopically normal Mg in the secondary alteration phases, grossular and monticellite. 81 refs., 9 figs., 8 tabs.

Kennedy, A.K.; Hutcheon, I.D.; Beckett, J.R. [California Institute of Technology, Pasadena, CA (United States)] [and others] [California Institute of Technology, Pasadena, CA (United States); and others

1997-04-01T23:59:59.000Z

90

Partitioning of radionuclides and trace elements in phosphogypsum and its source materials based on sequential extraction methods  

Science Journals Connector (OSTI)

Phosphogypsum is a waste produced by the phosphate fertilizer industry. Although phosphogypsum is mainly calcium sulphate dihydrate, it contains elevated levels of impurities, which originate from the source phosphate rock used in the phosphoric acid production. Among these impurities, radionuclides from 238U and 232Th decay series are of most concern due to their radiotoxicity. Other elements, such as rare earth elements (REE) and Ba are also enriched in the phosphogypsum. The bioavailability of radionuclides (226Ra, 210Pb and 232Th), rare earth elements and Ba to the surrounding aquatic system was evaluated by the application of sequential leaching of the phosphogypsum samples from the Brazilian phosphoric acid producers. The sequential extraction results show that most of the radium and lead are located in the iron oxide (non-CaSO4) fraction, and that only 1318% of these radionuclides are distributed in the most labile fraction. Th, REE and Ba were found predominantly in the residual phase, which corresponds to a small fraction of the phosphate rock or monazite that did not react and to insoluble compounds such as sulphates, phosphates and silicates. It can be concluded that although all these elements are enriched in the phosphogypsum samples they are not associated with CaSO4 itself and therefore do not represent a threat to the surrounding aquatic environment.

A.J.G. Santos; B.P. Mazzilli; D.I.T. Fvaro; P.S.C. Silva

2006-01-01T23:59:59.000Z

91

Crystal Site Location of Iron and Trace Elements in a Magnesium-Iron Olivine by a New Crystallographic Technique  

Science Journals Connector (OSTI)

...element A can be shown to depend only on Ns;, NMg, and NA as obtained from the two spectra. The analysis used to determine CFe, CMn, and CN, in Table 1 is essentially as described above. However, in order to improve the statistical accuracy, three...

J. TAFT; J. C. H. SPENCE

1982-10-01T23:59:59.000Z

92

Uncertainty Measurement for Trace Element Analysis of Uranium and Plutonium Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) and Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)  

SciTech Connect

The measurement uncertainty estimatino associated with trace element analysis of impurities in U and Pu was evaluated using the Guide to the Expression of Uncertainty Measurement (GUM). I this evalution the uncertainty sources were identified and standard uncertainties for the components were categorized as either Type A or B. The combined standard uncertainty was calculated and a coverage factor k = 2 was applied to obtain the expanded uncertainty, U. The ICP-AES and ICP-MS methods used were deveoped for the multi-element analysis of U and Pu samples. A typical analytical run consists of standards, process blanks, samples, matrix spiked samples, post digestion spiked samples and independent calibration verification standards. The uncertainty estimation was performed on U and Pu samples that have been analyzed previously as part of the U and Pu Sample Exchange Programs. Control chart results and data from the U and Pu metal exchange programs were combined with the GUM into a concentration dependent estimate of the expanded uncertainty. Comparison of trace element uncertainties obtained using this model was compared to those obtained for trace element results as part of the Exchange programs. This process was completed for all trace elements that were determined to be above the detection limit for the U and Pu samples.

Gallimore, David L. [Los Alamos National Laboratory

2012-06-13T23:59:59.000Z

93

Trace element and REE composition of five samples of the Yucca Mountain calcite-silica deposits. Special report No. 8  

SciTech Connect

The attached materials document the results of part of a recent effort of geochemical sampling and analysis at Yucca Mountain and nearby regions. The efforts come as a result of interest in comprehensive analyses of rare earth elements (REE), lanthanum (La) through lutecium (Lu). Several additional, non-REE analyses were obtained as well. Commercially available REE analyses have proved to be insufficiently sensitive for geochemical purposes. Dr. Roman Schmitt at the Radiation Center at Oregon State University in Corvallis was sent five samples as a trial effort. The results are very encouraging. The purpose of compiling Dr. Schmitt`s report and the other materials is to inform the sponsor of his independent observations of these results and other information that sent to him. To provide a more complete appreciation of the utility of REE analyses a copy of Dave Vaniman`s recent article is included in which he notes that REE analyses from Yucca Mountain indicate the occurrence of two distinctly different REE patterns as do several other chemical parameters of the calcite-silica deposits. Our four samples with high equivalent CaCO{sub 3} were collected from sites we believe to be spring deposits. One sample, 24D, is from southern Crater Flat which is acknowledged by U.S.G.S. investigators to be a spring deposit. All four of these samples have REE patterns similar to those from the saturated zone reported by Vaniman.

Livingston, D.

1993-07-01T23:59:59.000Z

94

Isotope and trace element evolution of the Naica aquifer (Chihuahua, Mexico) over the past 60,000yr revealed by speleothems  

Science Journals Connector (OSTI)

Abstract The espada speleothems of Cueva de las Espadas (Naica Mine, Chihuahua, Mexico) comprise a high-purity selenite core overlain by successive deposits of calcite, gypsum and aragonite. Gypsum precipitated under water from a hydrothermal solution (~58C) when the water table was above the cave level ca. 57ka, during the last glaciation, and some intervals during deglaciation and the Holocene. Aragonite was deposited at lower temperatures (~26C) in a perched lake occupying the cave bottom, when the water table dropped below the cave level during brief dry intervals during deglaciation and the early Holocene. The isotopic composition of gypsum water of crystallization shows that the deglaciationHolocene aquifer water was enriched in deuterium by 12.88.7 relative to water from the last glaciation. This is attributed to an increased relative moisture contribution from the Gulf of Mexico during deglaciation and the Holocene compared to the last glaciation. This indicates that drier conditions occurred in the Naica area during the Holocene than around 57ka. Furthermore, trace element analyses of gypsum served to deduce the circulation regime of the Naica aquifer during the past 60,000yr, and also suggest that higher aquifer recharge occurred during the last glaciation.

Fernando Gzquez; Jos-Mara Calaforra; Heather Stoll; Laura Sanna; Paolo Forti; Stein-Erik Lauritzen; Antonio Delgado; Fernando Rull; Jess Martnez-Fras

2013-01-01T23:59:59.000Z

95

Abstracts from a workshop on processes determining the input, behavior and fate of radionuclides and trace elements in continental shelf environments  

SciTech Connect

Abstracts of workshop presentations concerning input, behavior, and fate of trace metals and radionuclides in the marine system are presented. (ACR)

Not Available

1980-03-01T23:59:59.000Z

96

Sulfur isotope and trace element data from ore sulfides in the Noranda district (Abitibi, Canada): implications for volcanogenic massive sulfide deposit genesis  

Science Journals Connector (OSTI)

We examine models for volcanogenic massive sulfide (VMS) mineralization in the ~2.7-Ga Noranda camp, Abitibi subprovince, Superior Province, Canada, using a combination of multiple sulfur isotope and trace ele...

Elizabeth R. Sharman; Bruce E. Taylor; William G. Minarik

2014-10-01T23:59:59.000Z

97

E-Print Network 3.0 - analyzing elemental composition Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

SIMS trace- element data (up to 33 elements analyzed) are among... thermal processing. Bulk trace-element compositions: Our broad- beam SIMS data imply that vapor... refractory...

98

It's Elemental - The Element Indium  

NLE Websites -- All DOE Office Websites (Extended Search)

Cadmium Cadmium Previous Element (Cadmium) The Periodic Table of Elements Next Element (Tin) Tin The Element Indium [Click for Isotope Data] 49 In Indium 114.818 Atomic Number: 49 Atomic Weight: 114.818 Melting Point: 429.75 K (156.60°C or 313.88°F) Boiling Point: 2345 K (2072°C or 3762°F) Density: 7.31 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 5 Group Number: 13 Group Name: none What's in a name? Named after the bright indigo line in its spectrum. Say what? Indium is pronounced as IN-dee-em. History and Uses: Indium was discovered by the German chemists Ferdinand Reich and Hieronymus Theodor Richter in 1863. Reich and Richter had been looking for traces of the element thallium in samples of zinc ores. A brilliant indigo line in

99

Enrichment of trace elements in rare-metal bearing pegmatites of the muscovite class: Examples from the Jasper, Thomaston-Barnesville, Troup and Cherokee-Pickens districts in Georgia  

SciTech Connect

Pegmatites from four important mining districts in Georgia: the Cherokee-Pickens district (mica and beryl), the Thomaston-Barnesville (mica), Troup (beryl), and Jasper County (feldspar) districts, generally contain quartz, muscovite, K-feldspar and oligoclase and can be included in the muscovite class of pegmatites. No source intrusions are known for any of these pegmatite districts. The Thomaston-Barnesville district covers about 2,000 km[sup 2] compared to the < 100 km[sup 2] of the other three districts and includes 3--4 times as many pegmatites as each of the other districts. The more highly fractionated pegmatites represent 42 to 48 % of the total number of pegmatites sampled in each district except for the Thomaston-Barnesville district in which only 7 % are more highly fractionated. Muscovites from the more highly fractionated pegmatites in these districts contain mean trace element values of 1,118--1,732 ppm Rb, 1,867--3,083 ppm F, 91--278 ppm Li, 7.7-31 ppm Be, 122--147 ppm Ga, 122--315 ppm Nb, and 137--254 ppm Zn. These pegmatites have mean Ba/Rb and Rb/K[sub 2]O ratios of 0.01--0.21 and 129--177 ppm. Mean Ba is 19--234 ppm. Mean trace element values of muscovites from the least fractionated pegmatites are 381--675 ppm Rb, 748--1,622 ppm F, 33--221 ppm Li, 4:8--20.6 ppm Be, 56--80 ppm Ga, 32--152 ppm Nb, and 59--113 ppm Zn. These pegmatites have mean Ba/Rb and Rb/K[sub 2]O ratios of 0.44--2.83 and 39--76. Mean Ba is 218--857 ppm. In each district, the more highly fractionated pegmatites contain beryl or are in the vicinity of beryl-bearing pegmatites.

Cocker, M.D. (Georgia Geologic Survey, Atlanta, GA (United States))

1992-01-01T23:59:59.000Z

100

TURTLE with MAD input (Trace Unlimited Rays Through Lumped Elements) -- A computer program for simulating charged particle beam transport systems and DECAY TURTLE including decay calculations  

SciTech Connect

TURTLE is a computer program useful for determining many characteristics of a particle beam once an initial design has been achieved, Charged particle beams are usually designed by adjusting various beam line parameters to obtain desired values of certain elements of a transfer or beam matrix. Such beam line parameters may describe certain magnetic fields and their gradients, lengths and shapes of magnets, spacings between magnetic elements, or the initial beam accepted into the system. For such purposes one typically employs a matrix multiplication and fitting program such as TRANSPORT. TURTLE is designed to be used after TRANSPORT. For convenience of the user, the input formats of the two programs have been made compatible. The use of TURTLE should be restricted to beams with small phase space. The lumped element approximation, described below, precludes the inclusion of the effect of conventional local geometric aberrations (due to large phase space) or fourth and higher order. A reading of the discussion below will indicate clearly the exact uses and limitations of the approach taken in TURTLE.

Carey, D.C.

1999-12-09T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Accretionary wedge harzburgite serpentinization and rodingitization constrained by perovskite U/Pb SIMS age, trace elements and Sm/Nd isotopes: Case study from the Western Carpathians, Slovakia  

Science Journals Connector (OSTI)

Abstract Perovskite-bearing harzburgites occur in a mlange type blueschist-bearing accretionary wedge complex of the Inner Western Carpathians Meliata Unit in Slovakia. Although dark rounded, slightly hydrated relic cores of harzburgite boulders are perovskite-free, perovskite (Prv) occurrence in the surrounding serpentinites and rodingites enabled dating of hydration, resulting in two metamorphicmetasomatic Prv generations. Perovskite (1) grows parallel to relic clinopyroxene exsolution lamellae or forms randomly oriented grain clusters in serpentinized orthopyroxene (Opx1) porphyroclasts, often accompanied by tiny andradite lamellae clusters, or it is partly replaced by Ti-andradite. Perovskite crystallization indicates evolving rodingitization fluids pervading the boundary between the harzburgite cores and Prv-free serpentinite. This strictly limited occurrence of Prv (1) within a 1 to 20-cm across-zone implies slightly postponed Prv crystallization to serpentinization by LREE(Ce,La), Ca2+, Ti/Fe3+-enriched aqueous fluids. A grain scale metasomatic mechanism partitioned Ca and Ti from the host orthopyroxene porphyroclasts, spinel (Ti) and grain-boundary pervasive fluids to Prv. In contrast, Prv (2) occurs in a 1 to 3cm across chlorite-rich blackwall zone between hosting serpentinite and rodingite veins, thus indicating channelled rodingitization fluid flow and accompanying hydraulic fracturing. Here, Prv (2) is ingrown by chlorite and apatite. Part of this Prv (2) formed in a rodingite vein mineral assemblage composed of diopside, andradite, vesuvianite, epidote/zoisite, apatite and chlorite. Both perovskite 1 and 2 are replaced by pyrophanite along the grain rims and interiors; most likely via fluid-aided coupled dissolutionreprecipitation at increased SiFeMnAl element solubility in rodingitization fluids pervading serpentinized harzburgite. Both Prv generations, especially Prv (2), can be partly to almost totally replaced by (Ti-) Adr. Overgrowths of spinel by andradite are occasionally observed in contact zones between the serpentinites and rodingites. LA-ICP-MS study revealed strong depletion in LREE from Prv (1) to Prv (2), and a more typically positive Eu anomaly for Prv (2). Our spider diagram depicts relative enrichment in U, Nb, La, Ce, Pr, Nd, and decreased Rb, Ba, Th, Ta, Pb, Sr, Zr in both Prv generations. The U/Pb SIMS concordia ages of Prv (1) from 3 samples range from 1371Ma to 1351Ma, with a mean of 135.60.58Ma, while Prv (2) was dated at 133.75.4Ma. Such negligible age differences imply a relatively short-lived rodingitization event responsible for crystallization of both Prv generations. The 143Nd/144Nd mean value of Prv (1) is 0.5121530.000017 by LA-MC-ICP-MS, thus corresponding to the initial ?Nd(t=135)=?8.20.4 (math's mean). This suggests that the subducted and dehydrated continental crust was the main source of the interactive fluids which initiated serpentinization and rodingitization in the Neotethyan Meliatic accretionary wedge following closure of the MeliataHallstatt Triassic to Jurassic oceanic back-arc basin and the high-pressure metamorphism dated at ca. 160150Ma by 40Ar/39Ar.

Xian-Hua Li; Marin Puti; Yue-Heng Yang; Mat Koppa; Marian Dyda

2014-01-01T23:59:59.000Z

102

Trace elements in zooplankton particulate products  

Science Journals Connector (OSTI)

... the Martin and Knauer4 method. Samples along with appropriate blanks and standards were analysed by flameless or flame atomic absorption spectro-photometry10 and instrumental neutron activation11.

SCOTT W. FOWLER

1977-09-01T23:59:59.000Z

103

Trace Element and Isotopic Fluxes/ Subducted Slab  

E-Print Network (OSTI)

MODELS OF SUBDUCTION 5 3.20.4 EARLY-STAGE PROCESSING OF SEDIMENTS AND PORE WATERS IN TRENCH AND SHALLOW FOREARC SETTINGS (Early Subduction Chemistries of HP and UHP Suites 28 3.20.5.10 Forearc to Subarc: Summary and Outstanding Questions 30 3

Bebout, Gray E.

104

Role of Trace Elements in Cancer  

Science Journals Connector (OSTI)

...from less than 30 @zg/g,wet weight, to 170 and 50 to 460...were observed in 5 patients in corn plete remission, and values...may be introduced during the milling process. It has been suggested...manganese (1.5 2 @g/g,wet weight) and manganese isprimarily...

Morton K. Schwartz

1975-11-01T23:59:59.000Z

105

Trace element analysis of Texas lignite  

E-Print Network (OSTI)

or in the planning stages, Near surface lignite re- sources are estimated to be 21 billion metric tons in Texas, while deep basin reserves are estimated at 31 billion metric tons. Near (3] surface reserves alone could fulfill Texas' electrical needs for 100 years... or in the planning stages, Near surface lignite re- sources are estimated to be 21 billion metric tons in Texas, while deep basin reserves are estimated at 31 billion metric tons. Near (3] surface reserves alone could fulfill Texas' electrical needs for 100 years...

Mahar, Sean

2012-06-07T23:59:59.000Z

106

Nuclear elements in Banach Jordan pairs Ottmar Loos  

E-Print Network (OSTI)

Nuclear elements in Banach Jordan pairs Ottmar Loos Abstract We introduce nuclear elements in Banach Jordan pairs, generalizing the nuclear elements Jordan pairs and show that the trace form Trintroduced in [3] may be extended to the nuclear

107

Rare Earth Elements:  

Science Journals Connector (OSTI)

...were also extracted as by-products of uranium mining from conglomerates at Elliot Lake...toxic waste lakes, acrid air, and high cancer rates in the Bayan Obo area. The environmental...Major and trace element composition of the depleted MORB mantle (DMM). Earth and Planetary...

Anton R. Chakhmouradian; Frances Wall

108

EMSL - trace metals  

NLE Websites -- All DOE Office Websites (Extended Search)

trace-metals en Microbial Reductive Transformation of Phyllosilicate Fe(III) and U(VI) in Fluvial Subsurface Sediments. http:www.emsl.pnl.govemslwebpublications...

109

Elements & Compounds Atoms (Elements)  

E-Print Network (OSTI)

#12;Elements & Compounds #12;Atoms (Elements) Molecules (Compounds) Cells Elements & Compounds #12;Nucleus Electrons Cloud of negative charge (2 electrons) Fig. 2.5: Simplified model of a Helium (He) Atom He 4.002602 2 Helium Mass Number (~atomic mass) = number of Neutrons + Protons = 4 for Helium Atomic

Frey, Terry

110

CX-002645: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Categorical Exclusion Determination CX-002645: Categorical Exclusion Determination Fine Coal Flotation and Removal of Toxic Trace Elements CX(s) Applied: B3.6 Date: 06042010...

111

CGC Trace Species Partitioning  

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Trace Species Partitioning as Affected Trace Species Partitioning as Affected by Cold Gas Cleanup Conditions: A Thermodynamic Analysis February 10, 2011 DOE/NETL-2011/1503 T r ace Species P ar titioning at C old G as C leanup C onditions Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name,

112

Parallel Seismic Ray Tracing  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . . . . . . . 27 3.4.1 Rotated Take-Off Angle Mesh . . . . . . . . . . . . . . . . . . 28 3.4.2 Rotated Cubed Sphere Mesh . . . . . . . . . . . . . . . . . . . 29 3.4.3 Ray Tube Interpolation . . . . . . . . . . . . . . . . . . . . . . 30 3.5 Theoretical Model..., the ray parameters are defined as ?1 = ?(declination), ?2 = ?(azimuth), and ?3 = ?(travel-time). (b) Suppose we have a unit cube centered at the source point, then a ray can be traced from the source point through an evenly discretized point on the face...

Jain, Tarun K

2013-12-09T23:59:59.000Z

113

MeTAGeM-Trace: Improving trace generation in model transformation by leveraging the role of transformation models  

Science Journals Connector (OSTI)

Abstract In the context of Model-Driven Engineering (MDE), generation of traces can be automated using the implicit traceability relationships contained in any model transformation. Besides, if transformations are developed adopting a Model-Driven Engineering (MDE) approach, i.e. promoting the role of models and the level of automation, model transformation will benefit from the promised advantages of MDE in terms of less costly software development while reducing the inherent complexity of coding model transformations. To put these ideas into practice, this work introduces MeTAGeM-Trace, the first prototype of an EMF-based toolkit for the MDD of model-to-model transformations which supports trace generation, i.e. it allows developing model transformations that produce not only the corresponding target models, but also a trace model between the elements of the source and target models involved in the transformation.

lvaro Jimnez; Juan M. Vara; Vernica A. Bollati; Esperanza Marcos

2015-01-01T23:59:59.000Z

114

Ray-tracing for coordinate knowledge in the JWST Integrated Science Instrument Module  

Science Journals Connector (OSTI)

We describe the matrix/vector ray tracing methods used to maintain pupil and image position knowledge in the James Webb Space Telescope Optical Telescope Element Simulator. These prove...

Sabatke, Derek S

115

BIOLOGICAL TRACE ELEMENT RESEARCH 6, 159-A Minireview  

E-Print Network (OSTI)

). 'Conver!iion from wet weight as!iuming 80% moisture. Biomagnification Biomagnification. the process wherl

Canberra, University of

116

A baseline characterization of trace elements in Texas soils  

E-Print Network (OSTI)

A baseline survey of concentrations of Mn, Fe, Zn, Cu, Se, As, Cd, Cr, Co, Pb, Ba, and Ni was performed for 100 soils from seven Land Resource Areas of Texas. Nearly 300 soil samples from the upper, middle, and lower depths of selected pedons were...

Frybarger, Mary Rita

2012-06-07T23:59:59.000Z

117

The Leaching of Major and Trace Elements from Coal Ash  

Science Journals Connector (OSTI)

Most power stations currently operate wet ash disposal systems. However, this method of ash disposal is being subjected to increasing scrutiny as there is a potential for contamination of surface and groundwat...

D. R. Jones

1995-01-01T23:59:59.000Z

118

Nondestructive indices of trace element exposure in squamate reptiles  

E-Print Network (OSTI)

a , J.W. Snodgrass c , B.P. Jackson a , D.E Kling a , C.L. Rowe d , J.D. Congdon a a Savannah River Ecology Laboratory, University of Georgia, Aiken, SC 29802, USA b Department of Biological Sciences, snakes were either fed ®sh from a coal ash-contaminated site or uncontaminated food from a reference site

Hopkins, William A.

119

Trace elements in prehispanic hair samples of Gran Canaria  

Science Journals Connector (OSTI)

In the present study we have analysed hair Zn, Cu, Fe, Mn, Sr, Pb and Ca contents of 8 prehispanic hair specimens from Gran Canaria, comparing them with 10 acutal samples,...

E. Gonzlez-Reimers; M. Arnay-de-la-Rosa; V. Castro-Alemn

1991-04-01T23:59:59.000Z

120

It's Elemental - The Element Europium  

NLE Websites -- All DOE Office Websites (Extended Search)

Samarium Samarium Previous Element (Samarium) The Periodic Table of Elements Next Element (Gadolinium) Gadolinium The Element Europium [Click for Isotope Data] 63 Eu Europium 151.964 Atomic Number: 63 Atomic Weight: 151.964 Melting Point: 1095 K (822°C or 1512°F) Boiling Point: 1802 K (1529°C or 2784°F) Density: 5.24 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: none Group Name: Lanthanide What's in a name? Named after the continent of Europe. Say what? Europium is pronounced as yoo-RO-pee-em. History and Uses: Europium was discovered by Eugène-Antole Demarçay, a French chemist, in 1896. Demarçay suspected that samples of a recently discovered element, samarium, were contaminated with an unknown element. He was able to produce

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

It's Elemental - The Element Potassium  

NLE Websites -- All DOE Office Websites (Extended Search)

Argon Argon Previous Element (Argon) The Periodic Table of Elements Next Element (Calcium) Calcium The Element Potassium [Click for Isotope Data] 19 K Potassium 39.0983 Atomic Number: 19 Atomic Weight: 39.0983 Melting Point: 336.53 K (63.38°C or 146.08°F) Boiling Point: 1032 K (759°C or 1398°F) Density: 0.89 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 1 Group Name: Alkali Metal What's in a name? From the English word potash. Potassium's chemical symbol comes from the Latin word for alkali, kalium. Say what? Potassium is pronounced as poh-TASS-ee-em. History and Uses: Although potassium is the eighth most abundant element on earth and comprises about 2.1% of the earth's crust, it is a very reactive element

122

It's Elemental - The Element Sulfur  

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Phosphorus Phosphorus Previous Element (Phosphorus) The Periodic Table of Elements Next Element (Chlorine) Chlorine The Element Sulfur [Click for Isotope Data] 16 S Sulfur 32.065 Atomic Number: 16 Atomic Weight: 32.065 Melting Point: 388.36 K (115.21°C or 239.38°F) Boiling Point: 717.75 K (444.60°C or 832.28°F) Density: 2.067 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Non-metal Period Number: 3 Group Number: 16 Group Name: Chalcogen What's in a name? From the Sanskrit word sulvere and the Latin word sulphurium. Say what? Sulfur is pronounced as SUL-fer. History and Uses: Sulfur, the tenth most abundant element in the universe, has been known since ancient times. Sometime around 1777, Antoine Lavoisier convinced the rest of the scientific community that sulfur was an element. Sulfur is a

123

It's Elemental - The Element Magnesium  

NLE Websites -- All DOE Office Websites (Extended Search)

Sodium Sodium Previous Element (Sodium) The Periodic Table of Elements Next Element (Aluminum) Aluminum The Element Magnesium [Click for Isotope Data] 12 Mg Magnesium 24.3050 Atomic Number: 12 Atomic Weight: 24.3050 Melting Point: 923 K (650°C or 1202°F) Boiling Point: 1363 K (1090°C or 1994°F) Density: 1.74 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 3 Group Number: 2 Group Name: Alkaline Earth Metal What's in a name? For Magnesia, a district in the region of Thessaly, Greece. Say what? Magnesium is pronounced as mag-NEE-zhi-em. History and Uses: Although it is the eighth most abundant element in the universe and the seventh most abundant element in the earth's crust, magnesium is never found free in nature. Magnesium was first isolated by Sir Humphry Davy, an

124

Compound and Elemental Analysis At Kilauea East Rift Geothermal...  

Open Energy Info (EERE)

(XRF). The samples were made into thin sections as well as ground in a tungsten carbide grinding mill. A table of trace elements and amounts found during the analysis is...

125

Heat-Traced Fluid Transfer Lines  

E-Print Network (OSTI)

This paper discusses basic considerations in designing a heat tracing system using either team or electrical tracing. Four basic reasons to heat trace are dealt with: water freeze protection, chemical freeze protection, viscosity maintenance...

Schilling, R. E.

1984-01-01T23:59:59.000Z

126

Tracing Geothermal Fluids  

SciTech Connect

Geothermal water must be injected back into the reservoir after it has been used for power production. Injection is critical in maximizing the power production and lifetime of the reservoir. To use injectate effectively the direction and velocity of the injected water must be known or inferred. This information can be obtained by using chemical tracers to track the subsurface flow paths of the injected fluid. Tracers are chemical compounds that are added to the water as it is injected back into the reservoir. The hot production water is monitored for the presence of this tracer using the most sensitive analytic methods that are economically feasible. The amount and concentration pattern of the tracer revealed by this monitoring can be used to evaluate how effective the injection strategy is. However, the tracers must have properties that suite the environment that they will be used in. This requires careful consideration and testing of the tracer properties. In previous and parallel investigations we have developed tracers that are suitable from tracing liquid water. In this investigation, we developed tracers that can be used for steam and mixed water/steam environments. This work will improve the efficiency of injection management in geothermal fields, lowering the cost of energy production and increasing the power output of these systems.

Michael C. Adams; Greg Nash

2004-03-01T23:59:59.000Z

127

It's Elemental - The Element Nitrogen  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Carbon Previous Element (Carbon) The Periodic Table of Elements Next Element (Oxygen) Oxygen The Element Nitrogen [Click for Isotope Data] 7 N Nitrogen 14.0067 Atomic Number: 7 Atomic Weight: 14.0067 Melting Point: 63.15 K (-210.00°C or -346.00°F) Boiling Point: 77.36 K (-195.79°C or -320.44°F) Density: 0.0012506 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 2 Group Number: 15 Group Name: Pnictogen What's in a name? From the Greek words nitron and genes, which together mean "saltpetre forming." Say what? Nitrogen is pronounced as NYE-treh-gen. History and Uses: Nitrogen was discovered by the Scottish physician Daniel Rutherford in 1772. It is the fifth most abundant element in the universe and makes up

128

It's Elemental - The Element Sodium  

NLE Websites -- All DOE Office Websites (Extended Search)

Neon Neon Previous Element (Neon) The Periodic Table of Elements Next Element (Magnesium) Magnesium The Element Sodium [Click for Isotope Data] 11 Na Sodium 22.98976928 Atomic Number: 11 Atomic Weight: 22.98976928 Melting Point: 370.95 K (97.80°C or 208.04°F) Boiling Point: 1156 K (883°C or 1621°F) Density: 0.97 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 3 Group Number: 1 Group Name: Alkali Metal What's in a name? From the English word soda and from the Medieval Latin word sodanum, which means "headache remedy." Sodium's chemical symbol comes from the Latin word for sodium carbonate, natrium. Say what? Sodium is pronounced as SO-dee-em. History and Uses: Although sodium is the sixth most abundant element on earth and comprises

129

It's Elemental - The Element Francium  

NLE Websites -- All DOE Office Websites (Extended Search)

Radon Radon Previous Element (Radon) The Periodic Table of Elements Next Element (Radium) Radium The Element Francium [Click for Isotope Data] 87 Fr Francium 223 Atomic Number: 87 Atomic Weight: 223 Melting Point: 300 K (27°C or 81°F) Boiling Point: Unknown Density: Unknown Phase at Room Temperature: Solid Element Classification: Metal Period Number: 7 Group Number: 1 Group Name: Alkali Metal Radioactive What's in a name? Named for the country of France. Say what? Francium is pronounced as FRAN-see-em. History and Uses: Francium was discovered by Marguerite Catherine Perey, a French chemist, in 1939 while analyzing actinium's decay sequence. Although considered a natural element, scientists estimate that there is no more than one ounce of francium in the earth's crust at one time. Since there is so little

130

It's Elemental - The Element Phosphorus  

NLE Websites -- All DOE Office Websites (Extended Search)

Silicon Silicon Previous Element (Silicon) The Periodic Table of Elements Next Element (Sulfur) Sulfur The Element Phosphorus [Click for Isotope Data] 15 P Phosphorus 30.973762 Atomic Number: 15 Atomic Weight: 30.973762 Melting Point: 317.30 K (44.15°C or 111.47°F) Boiling Point: 553.65 K (280.5°C or 536.9°F) Density: 1.82 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Non-metal Period Number: 3 Group Number: 15 Group Name: Pnictogen What's in a name? From the Greek word for light bearing, phosphoros. Say what? Phosphorus is pronounced as FOS-fer-es. History and Uses: In what is perhaps the most disgusting method of discovering an element, phosphorus was first isolated in 1669 by Hennig Brand, a German physician and alchemist, by boiling, filtering and otherwise processing as many as 60

131

It's Elemental - The Element Cerium  

NLE Websites -- All DOE Office Websites (Extended Search)

Lanthanum Lanthanum Previous Element (Lanthanum) The Periodic Table of Elements Next Element (Praseodymium) Praseodymium The Element Cerium [Click for Isotope Data] 58 Ce Cerium 140.116 Atomic Number: 58 Atomic Weight: 140.116 Melting Point: 1071 K (798°C or 1468°F) Boiling Point: 3697 K (3424°C or 6195°F) Density: 6.770 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: none Group Name: Lanthanide What's in a name? Named for the asteroid Ceres. Say what? Cerium is pronounced as SER-ee-em. History and Uses: Cerium was discovered by Jöns Jacob Berzelius and Wilhelm von Hisinger, Swedish chemists, and independently by Martin Heinrich Klaproth, a German chemist, in 1803. Cerium is the most abundant of the rare earth elements

132

It's Elemental - The Element Neon  

NLE Websites -- All DOE Office Websites (Extended Search)

Fluorine Fluorine Previous Element (Fluorine) The Periodic Table of Elements Next Element (Sodium) Sodium The Element Neon [Click for Isotope Data] 10 Ne Neon 20.1797 Atomic Number: 10 Atomic Weight: 20.1797 Melting Point: 24.56 K (-248.59°C or -415.46°F) Boiling Point: 27.07 K (-246.08°C or -410.94°F) Density: 0.0008999 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 2 Group Number: 18 Group Name: Noble Gas What's in a name? From the Greek word for new, neos. Say what? Neon is pronounced as NEE-on. History and Uses: Neon was discovered by Sir William Ramsay, a Scottish chemist, and Morris M. Travers, an English chemist, shortly after their discovery of the element krypton in 1898. Like krypton, neon was discovered through the

133

It's Elemental - The Element Technetium  

NLE Websites -- All DOE Office Websites (Extended Search)

Molybdenum Molybdenum Previous Element (Molybdenum) The Periodic Table of Elements Next Element (Ruthenium) Ruthenium The Element Technetium [Click for Isotope Data] 43 Tc Technetium 98 Atomic Number: 43 Atomic Weight: 98 Melting Point: 2430 K (2157°C or 3915°F) Boiling Point: 4538 K (4265°C or 7709°F) Density: 11 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 5 Group Number: 7 Group Name: none Radioactive and Artificially Produced What's in a name? From the Greek word for artificial, technetos. Say what? Technetium is pronounced as tek-NEE-she-em. History and Uses: Technetium was the first artificially produced element. It was isolated by Carlo Perrier and Emilio Segrè in 1937. Technetium was created by bombarding molybdenum atoms with deuterons that had been accelerated by a

134

It's Elemental - The Element Cobalt  

NLE Websites -- All DOE Office Websites (Extended Search)

Iron Iron Previous Element (Iron) The Periodic Table of Elements Next Element (Nickel) Nickel The Element Cobalt [Click for Isotope Data] 27 Co Cobalt 58.933195 Atomic Number: 27 Atomic Weight: 58.933195 Melting Point: 1768 K (1495°C or 2723°F) Boiling Point: 3200 K (2927°C or 5301°F) Density: 8.86 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 9 Group Name: none What's in a name? From the German word for goblin or evil spirit, kobald and the Greek word for mine, cobalos. Say what? Cobalt is pronounced as KO-bolt. History and Uses: Cobalt was discovered by Georg Brandt, a Swedish chemist, in 1739. Brandt was attempting to prove that the ability of certain minerals to color glass blue was due to an unknown element and not to bismuth, as was commonly

135

It's Elemental - The Element Bromine  

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Selenium Selenium Previous Element (Selenium) The Periodic Table of Elements Next Element (Krypton) Krypton The Element Bromine [Click for Isotope Data] 35 Br Bromine 79.904 Atomic Number: 35 Atomic Weight: 79.904 Melting Point: 265.95 K (-7.2°C or 19.0°F) Boiling Point: 331.95 K (58.8°C or 137.8°F) Density: 3.11 grams per cubic centimeter Phase at Room Temperature: Liquid Element Classification: Non-metal Period Number: 4 Group Number: 17 Group Name: Halogen What's in a name? From the Greek word for stench, bromos. Say what? Bromine is pronounced as BRO-meen. History and Uses: The only nonmetallic element that is a liquid at normal room temperatures, bromine was produced by Carl Löwig, a young chemistry student, the summer before starting his freshman year at Heidelberg. When he showed his

136

It's Elemental - The Element Oxygen  

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Nitrogen Nitrogen Previous Element (Nitrogen) The Periodic Table of Elements Next Element (Fluorine) Fluorine The Element Oxygen [Click for Isotope Data] 8 O Oxygen 15.9994 Atomic Number: 8 Atomic Weight: 15.9994 Melting Point: 54.36 K (-218.79°C or -361.82°F) Boiling Point: 90.20 K (-182.95°C or -297.31°F) Density: 0.001429 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 2 Group Number: 16 Group Name: Chalcogen What's in a name? From the greek words oxys and genes, which together mean "acid forming." Say what? Oxygen is pronounced as OK-si-jen. History and Uses: Oxygen had been produced by several chemists prior to its discovery in 1774, but they failed to recognize it as a distinct element. Joseph

137

It's Elemental - The Element Manganese  

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Chromium Chromium Previous Element (Chromium) The Periodic Table of Elements Next Element (Iron) Iron The Element Manganese [Click for Isotope Data] 25 Mn Manganese 54.938045 Atomic Number: 25 Atomic Weight: 54.938045 Melting Point: 1519 K (1246°C or 2275°F) Boiling Point: 2334 K (2061°C or 3742°F) Density: 7.3 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 7 Group Name: none What's in a name? From the Latin word for magnet, magnes. Say what? Manganese is pronounced as MAN-ge-nees. History and Uses: Proposed to be an element by Carl Wilhelm Scheele in 1774, manganese was discovered by Johan Gottlieb Gahn, a Swedish chemist, by heating the mineral pyrolusite (MnO2) in the presence of charcoal later that year.

138

It's Elemental - The Element Titanium  

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Scandium Scandium Previous Element (Scandium) The Periodic Table of Elements Next Element (Vanadium) Vanadium The Element Titanium [Click for Isotope Data] 22 Ti Titanium 47.867 Atomic Number: 22 Atomic Weight: 47.867 Melting Point: 1941 K (1668°C or 3034°F) Boiling Point: 3560 K (3287°C or 5949°F) Density: 4.5 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 4 Group Name: none What's in a name? From the Greek word Titans, the mythological "first sons of the Earth." Say what? Titanium is pronounced as tie-TAY-nee-em. History and Uses: Titanium was discovered in 1791 by the Reverend William Gregor, an English pastor. Pure titanium was first produced by Matthew A. Hunter, an American metallurgist, in 1910. Titanium is the ninth most abundant element in the

139

ARM - Measurement - Trace gas concentration  

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govMeasurementsTrace gas concentration govMeasurementsTrace gas concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Trace gas concentration The amount per unit volume of trace gases other than carbon dioxide, ozone and water vapor, typically measured in conjunction with in situ aerosol measurements, e.g. carbon monoxide, nitrogen oxides, sulfur dioxide. Categories Atmospheric Carbon, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO : Carbon Monoxide Mixing Ratio System

140

Trace 700 | Open Energy Information  

Open Energy Info (EERE)

Trace 700 Trace 700 Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Trace 700 Agency/Company /Organization: Trane Sector: Energy Focus Area: Buildings, Energy Efficiency Topics: Technology characterizations Resource Type: Software/modeling tools Website: www.trane.com/Commercial/Dna/View.aspx?i=1136 References: http://www.trane.com/Commercial/Dna/View.aspx?i=1136 Detailed HVAC design tool. Can provide heating and cooling load calculation, system sizing, and energy use. A fairly thorough understanding of HVAC is necessary to use this tool. Tool Summary LAUNCH TOOL Name: Trace 700 Agency/Company /Organization: Trane Phase: Create a Vision, Determine Baseline, "Evaluate Options and Determine Feasibility" is not in the list of possible values (Bring the Right People Together, Create a Vision, Determine Baseline, Evaluate Options, Develop Goals, Prepare a Plan, Get Feedback, Develop Finance and Implement Projects, Create Early Successes, Evaluate Effectiveness and Revise as Needed) for this property.

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

It's Elemental - The Element Astatine  

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Polonium Polonium Previous Element (Polonium) The Periodic Table of Elements Next Element (Radon) Radon The Element Astatine [Click for Isotope Data] 85 At Astatine 210 Atomic Number: 85 Atomic Weight: 210 Melting Point: 575 K (302°C or 576°F) Boiling Point: Unknown Density: about 7 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Semi-metal Period Number: 6 Group Number: 17 Group Name: Halogen Radioactive What's in a name? From the Greek word for unstable, astatos. Say what? Astatine is pronounced as AS-teh-teen or as AS-teh-ten. History and Uses: Astatine was produced by Dale R. Carson, K.R. MacKenzie and Emilio Segrè by bombarding an isotope of bismuth, bismuth-209, with alpha particles that had been accelerated in a device called a cyclotron. This created

142

It's Elemental - The Element Copper  

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Nickel Nickel Previous Element (Nickel) The Periodic Table of Elements Next Element (Zinc) Zinc The Element Copper [Click for Isotope Data] 29 Cu Copper 63.546 Atomic Number: 29 Atomic Weight: 63.546 Melting Point: 1357.77 K (1084.62°C or 1984.32°F) Boiling Point: 2835 K (2562°C or 4644°F) Density: 8.933 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 11 Group Name: none What's in a name? From the Latin word cuprum, which means "from the island of Cyprus." Say what? Copper is pronounced as KOP-er. History and Uses: Archaeological evidence suggests that people have been using copper for at least 11,000 years. Relatively easy to mine and refine, people discovered methods for extracting copper from its ores at least 7,000 years ago. The

143

It's Elemental - The Element Gadolinium  

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Europium Europium Previous Element (Europium) The Periodic Table of Elements Next Element (Terbium) Terbium The Element Gadolinium [Click for Isotope Data] 64 Gd Gadolinium 157.25 Atomic Number: 64 Atomic Weight: 157.25 Melting Point: 1586 K (1313°C or 2395°F) Boiling Point: 3546 K (3273°C or 5923°F) Density: 7.90 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: none Group Name: Lanthanide What's in a name? Named for the mineral gadolinite which was named after Johan Gadolin, a Finnish chemist. Say what? Gadolinium is pronounced as GAD-oh-LIN-ee-em. History and Uses: Spectroscopic evidence for the existence of gadolinium was first observed by the Swiss chemist Jean Charles Galissard de Marignac in the minerals

144

It's Elemental - The Element Mercury  

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Gold Gold Previous Element (Gold) The Periodic Table of Elements Next Element (Thallium) Thallium The Element Mercury [Click for Isotope Data] 80 Hg Mercury 200.59 Atomic Number: 80 Atomic Weight: 200.59 Melting Point: 234.32 K (-38.83°C or -37.89°F) Boiling Point: 629.88 K (356.73°C or 674.11°F) Density: 13.5336 grams per cubic centimeter Phase at Room Temperature: Liquid Element Classification: Metal Period Number: 6 Group Number: 12 Group Name: none What's in a name? Named after the planet Mercury. Mercury's chemical symbol comes from the Greek word hydrargyrum, which means "liquid silver." Say what? Mercury is pronounced as MER-kyoo-ree. History and Uses: Mercury was known to the ancient Chinese and Hindus and has been found in 3500 year old Egyptian tombs. Mercury is not usually found free in nature

145

It's Elemental - The Element Hafnium  

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Lutetium Lutetium Previous Element (Lutetium) The Periodic Table of Elements Next Element (Tantalum) Tantalum The Element Hafnium [Click for Isotope Data] 72 Hf Hafnium 178.49 Atomic Number: 72 Atomic Weight: 178.49 Melting Point: 2506 K (2233°C or 4051°F) Boiling Point: 4876 K (4603°C or 8317°F) Density: 13.3 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 4 Group Name: none What's in a name? From the Latin word for the city of Copenhagen, Hafnia. Say what? Hafnium is pronounced as HAF-neeem. History and Uses: Hafnium was discovered by Dirk Coster, a Danish chemist, and Charles de Hevesy, a Hungarian chemist, in 1923. They used a method known as X-ray spectroscopy to study the arrangement of the outer electrons of atoms in

146

It's Elemental - The Element Boron  

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Beryllium Beryllium Previous Element (Beryllium) The Periodic Table of Elements Next Element (Carbon) Carbon The Element Boron [Click for Isotope Data] 5 B Boron 10.811 Atomic Number: 5 Atomic Weight: 10.811 Melting Point: 2348 K (2075°C or 3767°F) Boiling Point: 4273 K (4000°C or 7232°F) Density: 2.37 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Semi-metal Period Number: 2 Group Number: 13 Group Name: none What's in a name? From the Arabic word Buraq and the Persian word Burah, which are both words for the material "borax." Say what? Boron is pronounced as BO-ron. History and Uses: Boron was discovered by Joseph-Louis Gay-Lussac and Louis-Jaques Thénard, French chemists, and independently by Sir Humphry Davy, an English chemist,

147

It's Elemental - The Element Thorium  

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Actinium Actinium Previous Element (Actinium) The Periodic Table of Elements Next Element (Protactinium) Protactinium The Element Thorium [Click for Isotope Data] 90 Th Thorium 232.03806 Atomic Number: 90 Atomic Weight: 232.03806 Melting Point: 2023 K (1750°C or 3182°F) Boiling Point: 5061 K (4788°C or 8650°F) Density: 11.72 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 7 Group Number: none Group Name: Actinide Radioactive What's in a name? Named for the Scandinavian god of war, Thor. Say what? Thorium is pronounced as THOR-ee-em or as THO-ree-em. History and Uses: Thorium was discovered by Jöns Jacob Berzelius, a Swedish chemist, in 1828. He discovered it in a sample of a mineral that was given to him by the Reverend Has Morten Thrane Esmark, who suspected that it contained an

148

It's Elemental - The Element Chromium  

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Vanadium Vanadium Previous Element (Vanadium) The Periodic Table of Elements Next Element (Manganese) Manganese The Element Chromium [Click for Isotope Data] 24 Cr Chromium 51.9961 Atomic Number: 24 Atomic Weight: 51.9961 Melting Point: 2180 K (1907°C or 3465°F) Boiling Point: 2944 K (2671°C or 4840°F) Density: 7.15 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 6 Group Name: none What's in a name? From the Greek word for color, chroma. Say what? Chromium is pronounced as KROH-mee-em. History and Uses: Chromium was discovered by Louis-Nicholas Vauquelin while experimenting with a material known as Siberian red lead, also known as the mineral crocoite (PbCrO4), in 1797. He produced chromium oxide (CrO3) by mixing

149

It's Elemental - The Element Iron  

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Manganese Manganese Previous Element (Manganese) The Periodic Table of Elements Next Element (Cobalt) Cobalt The Element Iron [Click for Isotope Data] 26 Fe Iron 55.845 Atomic Number: 26 Atomic Weight: 55.845 Melting Point: 1811 K (1538°C or 2800°F) Boiling Point: 3134 K (2861°C or 5182°F) Density: 7.874 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 8 Group Name: none What's in a name? From the Anglo-Saxon word iron. Iron's chemical symbol comes from the Latin word for iron, ferrum. Say what? Iron is pronounced as EYE-ern. History and Uses: Archaeological evidence suggests that people have been using iron for at least 5000 years. Iron is the cheapest and one of the most abundant of all metals, comprising nearly 5.6% of the earth's crust and nearly all of the

150

It's Elemental - The Element Molybdenum  

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Niobium Niobium Previous Element (Niobium) The Periodic Table of Elements Next Element (Technetium) Technetium The Element Molybdenum [Click for Isotope Data] 42 Mo Molybdenum 95.96 Atomic Number: 42 Atomic Weight: 95.96 Melting Point: 2896 K (2623°C or 4753°F) Boiling Point: 4912 K (4639°C or 8382°F) Density: 10.2 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 5 Group Number: 6 Group Name: none What's in a name? From the Greek word for lead, molybdos. Say what? Molybdenum is pronounced as meh-LIB-deh-nem. History and Uses: Molybdenum was discovered by Carl Welhelm Scheele, a Swedish chemist, in 1778 in a mineral known as molybdenite (MoS2) which had been confused as a lead compound. Molybdenum was isolated by Peter Jacob Hjelm in 1781. Today,

151

It's Elemental - The Element Cesium  

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Xenon Xenon Previous Element (Xenon) The Periodic Table of Elements Next Element (Barium) Barium The Element Cesium [Click for Isotope Data] 55 Cs Cesium 132.9054519 Atomic Number: 55 Atomic Weight: 132.9054519 Melting Point: 301.59 K (28.44°C or 83.19°F) Boiling Point: 944 K (671°C or 1240°F) Density: 1.93 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 1 Group Name: Alkali Metal What's in a name? From the Latin word for sky blue, caesius. Say what? Cesium is pronounced as SEE-zee-em. History and Uses: Cesium was discovered by Robert Wilhelm Bunsen and Gustav Robert Kirchhoff, German chemists, in 1860 through the spectroscopic analysis of Durkheim mineral water. They named cesium after the blue lines they observed in its

152

It's Elemental - The Element Iridium  

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Osmium Osmium Previous Element (Osmium) The Periodic Table of Elements Next Element (Platinum) Platinum The Element Iridium [Click for Isotope Data] 77 Ir Iridium 192.217 Atomic Number: 77 Atomic Weight: 192.217 Melting Point: 2719 K (2446°C or 4435°F) Boiling Point: 4701 K (4428°C or 8002°F) Density: 22.42 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 9 Group Name: none What's in a name? From the Latin word for rainbow, iris. Say what? Iridium is pronounced as i-RID-ee-em. History and Uses: Iridium and osmium were discovered at the same time by the British chemist Smithson Tennant in 1803. Iridium and osmium were identified in the black residue remaining after dissolving platinum ore with aqua regia, a mixture

153

It's Elemental - The Element Platinum  

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Iridium Iridium Previous Element (Iridium) The Periodic Table of Elements Next Element (Gold) Gold The Element Platinum [Click for Isotope Data] 78 Pt Platinum 195.084 Atomic Number: 78 Atomic Weight: 195.084 Melting Point: 2041.55 K (1768.4°C or 3215.1°F) Boiling Point: 4098 K (3825°C or 6917°F) Density: 21.46 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 10 Group Name: none What's in a name? From the Spainsh word for silver, platina. Say what? Platinum is pronounced as PLAT-en-em. History and Uses: Used by the pre-Columbian Indians of South America, platinum wasn't noticed by western scientists until 1735. Platinum can occur free in nature and is sometimes found in deposits of gold-bearing sands, primarily those found in

154

It's Elemental - The Element Arsenic  

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Germanium Germanium Previous Element (Germanium) The Periodic Table of Elements Next Element (Selenium) Selenium The Element Arsenic [Click for Isotope Data] 33 As Arsenic 74.92160 Atomic Number: 33 Atomic Weight: 74.92160 Melting Point: 1090 K (817°C or 1503°F) Boiling Point: 887 K (614°C or 1137°F) Density: 5.776 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Semi-metal Period Number: 4 Group Number: 15 Group Name: Pnictogen What's in a name? From the Latin word arsenicum, the Greek word arsenikon and the Arabic word Az-zernikh. Say what? Arsenic is pronounced as AR-s'n-ik. History and Uses: Although arsenic compounds were mined by the early Chinese, Greek and Egyptian civilizations, it is believed that arsenic itself was first identified by Albertus Magnus, a German alchemist, in 1250. Arsenic occurs

155

It's Elemental - The Element Barium  

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Cesium Cesium Previous Element (Cesium) The Periodic Table of Elements Next Element (Lanthanum) Lanthanum The Element Barium [Click for Isotope Data] 56 Ba Barium 137.327 Atomic Number: 56 Atomic Weight: 137.327 Melting Point: 1000 K (727°C or 1341°F) Boiling Point: 2170 K (1897°C or 3447°F) Density: 3.62 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 2 Group Name: Alkaline Earth Metal What's in a name? From the Greek word for heavy, barys. Say what? Barium is pronounced as BAR-ee-em. History and Uses: Barium was first isolated by Sir Humphry Davy, an English chemist, in 1808 through the electrolysis of molten baryta (BaO). Barium is never found free in nature since it reacts with oxygen in the air, forming barium oxide

156

It's Elemental - The Element Gold  

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Platinum Platinum Previous Element (Platinum) The Periodic Table of Elements Next Element (Mercury) Mercury The Element Gold [Click for Isotope Data] 79 Au Gold 196.966569 Atomic Number: 79 Atomic Weight: 196.966569 Melting Point: 1337.33 K (1064.18°C or 1947.52°F) Boiling Point: 3129 K (2856°C or 5173°F) Density: 19.282 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 11 Group Name: none What's in a name? From the Sanskrit word Jval and the Anglo-Saxon word gold. Gold's chemical symbol comes from the the latin word for gold, aurum. Say what? Gold is pronounced as GOLD. History and Uses: An attractive and highly valued metal, gold has been known for at least 5500 years. Gold is sometimes found free in nature but it is usually found

157

It's Elemental - The Element Rhenium  

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Tungsten Tungsten Previous Element (Tungsten) The Periodic Table of Elements Next Element (Osmium) Osmium The Element Rhenium [Click for Isotope Data] 75 Re Rhenium 186.207 Atomic Number: 75 Atomic Weight: 186.207 Melting Point: 3459 K (3186°C or 5767°F) Boiling Point: 5869 K (5596°C or 10105°F) Density: 20.8 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 7 Group Name: none What's in a name? From the Latin word for the Rhine River, Rhenus. Say what? Rhenium is pronounced as REE-nee-em. History and Uses: Rhenium was discovered by the German chemists Ida Tacke-Noddack, Walter Noddack and Otto Carl Berg in 1925. They detected rhenium spectroscopically in platinum ores and in the minerals columbite ((Fe, Mn, Mg)(Nb, Ta)2O6),

158

It's Elemental - The Element Osmium  

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Rhenium Rhenium Previous Element (Rhenium) The Periodic Table of Elements Next Element (Iridium) Iridium The Element Osmium [Click for Isotope Data] 76 Os Osmium 190.23 Atomic Number: 76 Atomic Weight: 190.23 Melting Point: 3306 K (3033°C or 5491°F) Boiling Point: 5285 K (5012°C or 9054°F) Density: 22.57 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 8 Group Name: none What's in a name? From the Greek word for a smell, osme. Say what? Osmium is pronounced as OZ-mee-em. History and Uses: Osmium and iridium were discovered at the same time by the British chemist Smithson Tennant in 1803. Osmium and iridium were identified in the black residue remaining after dissolving platinum ore with aqua regia, a mixture

159

It's Elemental - The Element Antimony  

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Tin Tin Previous Element (Tin) The Periodic Table of Elements Next Element (Tellurium) Tellurium The Element Antimony [Click for Isotope Data] 51 Sb Antimony 121.760 Atomic Number: 51 Atomic Weight: 121.760 Melting Point: 903.78 K (630.63°C or 1167.13°F) Boiling Point: 1860 K (1587°C or 2889°F) Density: 6.685 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Semi-metal Period Number: 5 Group Number: 15 Group Name: Pnictogen What's in a name? From the Greek words anti and monos, which together mean "not alone." Antimony's chemical symbol comes from its historic name, Stibium. Say what? Antimony is pronounced as AN-the-MOH-nee. History and Uses: Antimony has been known since ancient times. It is sometimes found free in nature, but is usually obtained from the ores stibnite (Sb2S3) and

160

Trace determination of lead by helium-4 activation analysis  

E-Print Network (OSTI)

glass samples doped with 61 different trace elements at nominal 500 to 1 ppm level concentrations. We evaluated the measurement sensitivities of two methods for alpha counting, i. e. , surface barrier detector and nuclear track detectors. Detection.... An automated system synchronized irradiation, solenoid operation, and data acquisition. Prior to irradiation, the solenoid was energized to position the aluminum sheet in front of the detector. The cyclotron's beam pulser system then began irradiation...

Vargas Bernal, Maria E.

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

It's Elemental - The Element Zinc  

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Copper Copper Previous Element (Copper) The Periodic Table of Elements Next Element (Gallium) Gallium The Element Zinc [Click for Isotope Data] 30 Zn Zinc 65.38 Atomic Number: 30 Atomic Weight: 65.38 Melting Point: 692.68 K (419.53°C or 787.15°F) Boiling Point: 1180 K (907°C or 1665°F) Density: 7.134 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 12 Group Name: none What's in a name? From the German word zink. Say what? Zinc is pronounced as ZINK. History and Uses: Although zinc compounds have been used for at least 2,500 years in the production of brass, zinc wasn't recognized as a distinct element until much later. Metallic zinc was first produced in India sometime in the 1400s by heating the mineral calamine (ZnCO3) with wool. Zinc was rediscovered by

162

It's Elemental - The Element Chlorine  

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Sulfur Sulfur Previous Element (Sulfur) The Periodic Table of Elements Next Element (Argon) Argon The Element Chlorine [Click for Isotope Data] 17 Cl Chlorine 35.453 Atomic Number: 17 Atomic Weight: 35.453 Melting Point: 171.65 K (-101.5°C or -150.7°F) Boiling Point: 239.11 K (-34.04°C or -29.27°F) Density: 0.003214 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 3 Group Number: 17 Group Name: Halogen What's in a name? From the Greek word for greenish yellow, chloros. Say what? Chlorine is pronounced as KLOR-een or as KLOR-in. History and Uses: Since it combines directly with nearly every element, chlorine is never found free in nature. Chlorine was first produced by Carl Wilhelm Scheele, a Swedish chemist, when he combined the mineral pyrolusite (MnO2) with

163

It's Elemental - The Element Fluorine  

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Oxygen Oxygen Previous Element (Oxygen) The Periodic Table of Elements Next Element (Neon) Neon The Element Fluorine [Click for Isotope Data] 9 F Fluorine 18.9984032 Atomic Number: 9 Atomic Weight: 18.9984032 Melting Point: 53.53 K (-219.62°C or -363.32°F) Boiling Point: 85.03 K (-188.12°C or -306.62°F) Density: 0.001696 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 2 Group Number: 17 Group Name: Halogen What's in a name? From the Latin and French words for flow, fluere. Say what? Fluorine is pronounced as FLU-eh-reen or as FLU-eh-rin. History and Uses: Fluorine is the most reactive of all elements and no chemical substance is capable of freeing fluorine from any of its compounds. For this reason, fluorine does not occur free in nature and was extremely difficult for

164

It's Elemental - The Element Lead  

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Thallium Thallium Previous Element (Thallium) The Periodic Table of Elements Next Element (Bismuth) Bismuth The Element Lead [Click for Isotope Data] 82 Pb Lead 207.2 Atomic Number: 82 Atomic Weight: 207.2 Melting Point: 600.61 K (327.46°C or 621.43°F) Boiling Point: 2022 K (1749°C or 3180°F) Density: 11.342 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 14 Group Name: none What's in a name? From the Anglo-Saxon word lead. Lead's chemical symbol comes from the Latin word for waterworks, plumbum. Say what? Lead is pronounced as LED. History and Uses: Lead has been known since ancient times. It is sometimes found free in nature, but is usually obtained from the ores galena (PbS), anglesite (PbSO4), cerussite (PbCO3) and minum (Pb3O4). Although lead makes up only

165

It's Elemental - The Element Iodine  

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Tellurium Tellurium Previous Element (Tellurium) The Periodic Table of Elements Next Element (Xenon) Xenon The Element Iodine [Click for Isotope Data] 53 I Iodine 126.90447 Atomic Number: 53 Atomic Weight: 126.90447 Melting Point: 386.85 K (113.7°C or 236.7°F) Boiling Point: 457.55 K (184.4°C or 364.0°F) Density: 4.93 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Non-metal Period Number: 5 Group Number: 17 Group Name: Halogen What's in a name? From the Greek word for violet, iodes. Say what? Iodine is pronounced as EYE-eh-dine or as EYE-eh-din. History and Uses: Iodine was discovered by the French chemist Barnard Courtois in 1811. Courtois was extracting sodium and potassium compounds from seaweed ash. Once these compounds were removed, he added sulfuric acid (H2SO4) to

166

Application of Digital SIMS Imaging to Light Element and Trace Element Mapping  

Science Journals Connector (OSTI)

The determination of the relationship of compositional microstructure to morphological microstructure is often critical for elucidating structure-property relationships in materials. Traditionally, the study of t...

D. Newbury; D. Bright; D. Williams; C. M. Sung

1986-01-01T23:59:59.000Z

167

Trace Element Determination by Combining Solid-Phase Microextraction Hyphenated to Elemental and Molecular Detection Techniques  

Science Journals Connector (OSTI)

......degradation according with the storage time. Moreover, NaBEt4 must...case of speciation studies in seawater. In the case of aqueous matrices...25123 14.8-14.9 Hg2+ Seawater NaBEt4, acetate 100 m PDMS...pH 5) 0.11 4.8 Hg2+ Seawater NaBPr4, acetate 100 m PDMS......

Sergi Dez; Josep M. Bayona

2006-08-01T23:59:59.000Z

168

Specifying API Trace Birthmark by Abstract Interpretation  

Science Journals Connector (OSTI)

API trace birthmark is a major class of software birthmarks, where API sequences are defined as software birthmarks to ... , an abstract interpretation-based method for specifying API trace birthmark is proposed ...

Ying Zeng; Fenlin Liu; Jian Chen; Bin Yan

2013-01-01T23:59:59.000Z

169

Distributed trace using central performance counter memory  

DOE Patents (OSTI)

A plurality of processing cores, are central storage unit having at least memory connected in a daisy chain manner, forming a daisy chain ring layout on an integrated chip. At least one of the plurality of processing cores places trace data on the daisy chain connection for transmitting the trace data to the central storage unit, and the central storage unit detects the trace data and stores the trace data in the memory co-located in with the central storage unit.

Satterfield, David L; Sexton, James C

2013-10-22T23:59:59.000Z

170

CX-001451: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Determination CX-001451: Categorical Exclusion Determination Fate and Control of Mercury and Trace Elements CX(s) Applied: B3.6 Date: 03312010 Location(s): Grand Forks,...

171

Privacy vulnerability of published anonymous mobility traces  

Science Journals Connector (OSTI)

Mobility traces of people and vehicles have been collected and published to assist the design and evaluation of mobile networks, such as large-scale urban sensing networks. Although the published traces are often made anonymous in that the true identities ... Keywords: mobility traces, privacy, security and protection

Chris Y. T. Ma; David K. Y. Yau; Nung Kwan Yip; Nageswara S. V. Rao

2013-06-01T23:59:59.000Z

172

Ray Tracing JELLO Brand Paul S. Heckbert  

E-Print Network (OSTI)

Ray Tracing JELL­O ® Brand Gelatin Paul S. Heckbert Dessert Foods Division Pixar San Rafael, CA ABSTRACT Ray tracing has established itself in recent years as the most general image synthesis algorithm for ray tracing Jell­O ® brand gelatin. We believe the method may have application to other brands

Treuille, Adrien

173

Point-to-curve ray tracing  

Science Journals Connector (OSTI)

Point-to-curve ray tracing is an attempt at dealing with multiplicity of solutions to a generic boundary-value problem of ray tracing. In a point-to-curve tracing (P2C) the input parameters of the boundary-value....

Andrzej Hanyga

1996-01-01T23:59:59.000Z

174

Point-to-curve Ray Tracing  

Science Journals Connector (OSTI)

Point-to-curve ray tracing is an attempt at dealing with multiplicity of solutions to a generic boundary-value problem of ray tracing. In a point-to-curve tracing (P2C) the input parameters of the boundary-value....

Andrzej Hanyga

1996-01-01T23:59:59.000Z

175

The Origin of the Elements  

ScienceCinema (OSTI)

The world around us is made of atoms. Did you ever wonder where these atoms came from? How was the gold in our jewelry, the carbon in our bodies, and the iron in our cars made? In this lecture, we will trace the origin of a gold atom from the Big Bang to the present day, and beyond. You will learn how the elements were forged in the nuclear furnaces inside stars, and how, when they die, these massive stars spread the elements into space. You will learn about the origin of the building blocks of matter in the Big Bang, and we will speculate on the future of the atoms around us today.

Murphy, Edward

2014-08-06T23:59:59.000Z

176

Programmatic Elements  

Directives, Delegations, and Requirements

The Guide provides acceptable methods of meeting the requirements of DOE O 151.1C for programmatic elements that sustain the emergency management program and maintain the readiness of the program to respond to an emergency. Cancels DOE G 151.1-1, Volume 5-1, DOE G 151.1-1, Volume 5-2, DOE G 151.1-1, Volume 5-3, DOE G 151.1-1, Volume 5-4, DOE G 151.1-1, Volume 7-1, and DOE G 151.1-1, Volume 7-3.

2007-07-11T23:59:59.000Z

177

Response Elements  

Directives, Delegations, and Requirements

The Guide provides acceptable methods for meeting the requirement of DOE O 151.1C for response elements that respond or contribute to response as needed in an emergency. Cancels DOE G 151.1-1, Volume 3-1, DOE G 151.1-1, Volume 3-2, DOE G 151.1-1, Volume 3-3, DOE G 151.1-1, Volume 3-4, DOE G 151.1-1, Volume 4-1, DOE G 151.1-1, Volume 4-2, DOE G 151.1-1, Volume 4-3, DOE G 151.1-1, Volume 4-4, DOE G 151.1-1, Volume 4-5, and DOE G 151.1-1, Volume 4-6.

2007-07-11T23:59:59.000Z

178

Trace metal concentration and fish size: Variation among fish species in a Mediterranean river  

E-Print Network (OSTI)

29 April 2014 Accepted 12 May 2014 Keywords: Bioaccumulation Heavy metals Llobregat River species in an Iberian river with moderate metal pollution. Al, Fe and Zn were the most abundant metals trace elements (Bervoets and Blust, 2003; Noël et al., 2013). Heavy metals in fish represent a potential

García-Berthou, Emili

179

Elemental composition in sealed plutoniumberyllium neutron sources  

Science Journals Connector (OSTI)

Abstract Five sealed plutoniumberyllium (PuBe) neutron sources from various manufacturers were disassembled. Destructive chemical analyses for recovered PuBe materials were conducted for disposition purposes. A dissolution method for PuBe alloys was developed for quantitative plutonium (Pu) and beryllium (Be) assay. Quantitation of Be and trace elements was performed using plasma based spectroscopic instruments, namely inductively coupled plasma mass spectrometry (ICP-MS) and atomic emission spectrometry (ICP-AES). Pu assay was accomplished by an electrochemical method. Variations in trace elemental contents among the five PuBe sources are discussed.

N. Xu; K. Kuhn; D. Gallimore; A. Martinez; M. Schappert; D. Montoya; E. Lujan; K. Garduno; L. Tandon

2015-01-01T23:59:59.000Z

180

INTRODUCTION Metals comprise about 75% of the known elements and can  

E-Print Network (OSTI)

quality. Metals have traditionally been classified into categories such as light, heavy, semimetal (i of less than 0.1%. In biochemical and bio- medical research, trace element concentrations in plant

Sparks, Donald L.

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Adsorptive Stripping Voltammetric Measurements of Trace Uranium...  

NLE Websites -- All DOE Office Websites (Extended Search)

Measurements of Trace Uranium at the Bismuth Film Electrode. Abstract: Bismuth-coated carbon-fiber electrodes have been successfully applied for adsorptive-stripping...

182

Accelerated Ray Traced Animations Exploiting Temporal Coherence.  

E-Print Network (OSTI)

??Ray tracing is a well-know technique for producing realistic graphics. However, the time necessary to generate images is unacceptably long. When producing the many frames (more)

Baines, Darwin Tarry

2005-01-01T23:59:59.000Z

183

Layered Video Coding Offset Distortion Traces for Trace-Based Evaluation of Video Quality after  

E-Print Network (OSTI)

Layered Video Coding Offset Distortion Traces for Trace-Based Evaluation of Video Quality after@kom.aau.dk Abstract-- Currently available video traces for scalable en- coded video with more than one layer are a convenient repre- sentation of the encoded video for the evaluation of networking mechanisms. The video

Reisslein, Martin

184

Layered Video Coding Offset Distortion Traces for Trace-Based Evaluation of Video Quality after  

E-Print Network (OSTI)

1 Layered Video Coding Offset Distortion Traces for Trace-Based Evaluation of Video Quality after video traces for scalable encoded video with more than one layer are a convenient representation of the encoded video for the evaluation of networking mechanisms. The video distortion (RMSE) or quality (PSNR

Reisslein, Martin

185

Trace and ultratrace metals in bottled waters: Survey of sources worldwide and comparison with refillable metal bottles  

Science Journals Connector (OSTI)

Bottled waters from diverse natural and industrial sources are becoming increasingly popular worldwide. Several potentially harmful trace metals (Ag, Be, Li, Ge, Sb, Sc, Te, Th, U) are not monitored regularly in such waters. As a consequence, there is extremely limited data on the abundance and potential health impacts of many potentially toxic trace elements. Containers used for the storage of bottled waters might also increase trace metal levels above threshold limits established for human consumption by the EPA or WHO. Applying strict clean room techniques and sector field ICPMS, 23 elements were determined in 132 brands of bottled water from 28 countries. In addition, leaching experiments with high purity water and various popular metal bottles investigated the release of trace metals from these containers. The threshold limits for elements such as Al, Be, Mn and U in drinking water were clearly exceeded in some waters. Several bottled waters had Li concentrations in the low mg/L range, a level which is comparable to blood plasma levels of patients treated against manic depression with Li-containing drugs. The rate of release of trace metals from metal bottles assessed after 13days was generally low, with one exception: Substantial amounts of both Sb and Tl were released from a commercially available pewter pocket flask, exceeding international guidelines 5- and 11-fold, respectively. Trace metal levels of most bottled waters are below guideline levels currently considered harmful for human health. The few exceptions that exist, however, clearly reveal that health concerns are likely to manifest through prolonged use of such waters. The investigated coated aluminium and stainless steel bottles are harmless with respect to leaching of trace metals into drinking water. Pocket flasks, in turn, should be selected with great care to avoid contamination of beverages with harmful amounts of potentially toxic trace metals such as Sb and Tl.

Michael Krachler; William Shotyk

2009-01-01T23:59:59.000Z

186

Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions...  

NLE Websites -- All DOE Office Websites (Extended Search)

Voltammetric Detection of Trace Heavy Metal Ions Using Carbon Nanotube Nanoelectrode Array. Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions Using Carbon Nanotube...

187

Infrared near-field spectroscopy of trace explosives using an...  

NLE Websites -- All DOE Office Websites (Extended Search)

spectroscopy of trace explosives using an external cavity quantum cascade laser. Infrared near-field spectroscopy of trace explosives using an external cavity quantum...

188

ACCEPTED MANUSCRIPT The behaviour of Rare-Earth Elements, Zr and Hf during biologically-mediated  

E-Print Network (OSTI)

ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 1 The behaviour of Rare-Earth Elements, Zr and Hf during.a,b* , Cangemi M.a , Brusca L.c , Madonia P.c , Saiano F.d , Zuddas P.e a) Department of Earth and Marine at the solid-liquid interface influencing the distribution of trace elements onto microbial surfaces. Since

189

Extraction of trace metals from fly ash  

DOE Patents (OSTI)

A process is described for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous. The fly ash has a silicate base and contains surface deposits of the trace metals as oxides, chlorides or the like. The process is carried out by contacting the fly ash with AlCl/sub 3/ in an alkali halide melt to react the trace metals with the AlCl/sub 3/ to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, M.; Wai, C.M.; Nagy, Z.

1983-08-15T23:59:59.000Z

190

Extraction of trace metals from fly ash  

DOE Patents (OSTI)

A process for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous, the fly ash having a silicate base and containing surface deposits of the trace metals as oxides, chlorides or the like, with the process being carried out by contacting the fly ash with AlCl.sub.3 in an alkali halide melt to react the trace metals with the AlCl.sub.3 to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, Milton (Palos Park, IL); Wai, Chien M. (Moscow, ID); Nagy, Zoltan (Woodridge, IL)

1984-01-01T23:59:59.000Z

191

Effect of residual elements on high performance nickel base superalloys for gas turbines and strategies for manufacture  

Science Journals Connector (OSTI)

The need for better gas turbine operating efficiency and reliability has resulted in tightening of specification and acceptance standards. It has been realized that some elements even at trace level, can have ...

O. P. Sinha; M. Chatterjee; V. V. R. S. Sarma; S. N. Jha

2005-07-01T23:59:59.000Z

192

CP-violating CFT and trace anomaly  

E-Print Network (OSTI)

It is logically possible that the trace anomaly in four dimension includes the Hirzebruch-Pontryagin density in CP violating theories. Although the term vanishes at free conformal fixed points, we realize such a possibility in the holographic renormalization group and show that it is indeed possible. The Hirzebruch-Pontryagin term in the trace anomaly may serve as a barometer to understand how much CP is violated in conformal field theories.

Yu Nakayama

2012-01-17T23:59:59.000Z

193

Compound and Elemental Analysis At Central Nevada Seismic Zone Region  

Open Energy Info (EERE)

Nevada Nevada Seismic Zone Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Central Nevada Seismic Zone Geothermal Region Exploration Technique Compound and Elemental Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring lithium

194

Compound and Elemental Analysis At Northern Basin & Range Region  

Open Energy Info (EERE)

(Coolbaugh, Et Al., 2010) (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At Northern Basin & Range Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Northern Basin and Range Geothermal Region Exploration Technique Compound and Elemental Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for

195

It's Elemental - Isotopes of the Element Magnesium  

NLE Websites -- All DOE Office Websites (Extended Search)

Sodium Sodium Previous Element (Sodium) The Periodic Table of Elements Next Element (Aluminum) Aluminum Isotopes of the Element Magnesium [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 24 78.99% STABLE 25 10.00% STABLE 26 11.01% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 19 4.0 picoseconds Double Proton Emission 100.00% 20 90.8 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission ~ 27.00% 21 122 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission 32.60% Electron Capture with delayed Alpha Decay < 0.50%

196

It's Elemental - Isotopes of the Element Chlorine  

NLE Websites -- All DOE Office Websites (Extended Search)

Sulfur Sulfur Previous Element (Sulfur) The Periodic Table of Elements Next Element (Argon) Argon Isotopes of the Element Chlorine [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 35 75.76% STABLE 37 24.24% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 28 No Data Available Proton Emission (suspected) No Data Available 29 < 20 nanoseconds Proton Emission No Data Available 30 < 30 nanoseconds Proton Emission No Data Available 31 150 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission 0.70% 32 298 milliseconds Electron Capture 100.00%

197

It's Elemental - Isotopes of the Element Potassium  

NLE Websites -- All DOE Office Websites (Extended Search)

Argon Argon Previous Element (Argon) The Periodic Table of Elements Next Element (Calcium) Calcium Isotopes of the Element Potassium [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 39 93.2581% STABLE 40 0.0117% 1.248×10+9 years 41 6.7302% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 32 No Data Available Proton Emission (suspected) No Data Available 33 < 25 nanoseconds Proton Emission No Data Available 34 < 25 nanoseconds Proton Emission No Data Available 35 178 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission 0.37% 36 342 milliseconds Electron Capture 100.00%

198

It's Elemental - Isotopes of the Element Phosphorus  

NLE Websites -- All DOE Office Websites (Extended Search)

Silicon Silicon Previous Element (Silicon) The Periodic Table of Elements Next Element (Sulfur) Sulfur Isotopes of the Element Phosphorus [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 31 100% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 24 No Data Available Electron Capture (suspected) No Data Available Proton Emission (suspected) No Data Available 25 < 30 nanoseconds Proton Emission 100.00% 26 43.7 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission No Data Available 27 260 milliseconds Electron Capture 100.00% Electron Capture with

199

It's Elemental - Isotopes of the Element Francium  

NLE Websites -- All DOE Office Websites (Extended Search)

Radon Radon Previous Element (Radon) The Periodic Table of Elements Next Element (Radium) Radium Isotopes of the Element Francium [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Francium has no naturally occurring isotopes. Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 199 12 milliseconds Alpha Decay > 0.00% Electron Capture No Data Available 200 49 milliseconds Alpha Decay 100.00% 201 62 milliseconds Alpha Decay 100.00% 201m 19 milliseconds Alpha Decay 100.00% 202 0.30 seconds Alpha Decay 100.00% 202m 0.29 seconds Alpha Decay 100.00% 203 0.55 seconds Alpha Decay <= 100.00% 204 1.8 seconds Alpha Decay 92.00%

200

It's Elemental - Isotopes of the Element Oxygen  

NLE Websites -- All DOE Office Websites (Extended Search)

Nitrogen Nitrogen Previous Element (Nitrogen) The Periodic Table of Elements Next Element (Fluorine) Fluorine Isotopes of the Element Oxygen [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 16 99.757% STABLE 17 0.038% STABLE 18 0.205% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 12 1.139×10-21 seconds Proton Emission No Data Available 13 8.58 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission 100.00% 14 70.620 seconds Electron Capture 100.00% 15 122.24 seconds Electron Capture 100.00% 16 STABLE - - 17 STABLE - - 18 STABLE - - 19 26.88 seconds Beta-minus Decay 100.00%

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

It's Elemental - Isotopes of the Element Gallium  

NLE Websites -- All DOE Office Websites (Extended Search)

Zinc Zinc Previous Element (Zinc) The Periodic Table of Elements Next Element (Germanium) Germanium Isotopes of the Element Gallium [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 69 60.108% STABLE 71 39.892% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 56 No Data Available Proton Emission (suspected) No Data Available 57 No Data Available Proton Emission (suspected) No Data Available 58 No Data Available Proton Emission (suspected) No Data Available 59 No Data Available Proton Emission (suspected) No Data Available 60 70 milliseconds Electron Capture 98.40%

202

It's Elemental - Isotopes of the Element Sodium  

NLE Websites -- All DOE Office Websites (Extended Search)

Neon Neon Previous Element (Neon) The Periodic Table of Elements Next Element (Magnesium) Magnesium Isotopes of the Element Sodium [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 23 100% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 18 1.3×10-21 seconds Proton Emission 100.00% 19 < 40 nanoseconds Proton Emission No Data Available 20 447.9 milliseconds Electron Capture with delayed Alpha Decay 20.05% Electron Capture 100.00% 21 22.49 seconds Electron Capture 100.00% 22 2.6027 years Electron Capture 100.00% 23 STABLE - - 24 14.997 hours Beta-minus Decay 100.00%

203

It's Elemental - Isotopes of the Element Neon  

NLE Websites -- All DOE Office Websites (Extended Search)

Fluorine Fluorine Previous Element (Fluorine) The Periodic Table of Elements Next Element (Sodium) Sodium Isotopes of the Element Neon [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 20 90.48% STABLE 21 0.27% STABLE 22 9.25% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 16 9×10-21 seconds Double Proton Emission 100.00% 17 109.2 milliseconds Electron Capture with delayed Alpha Decay No Data Available Electron Capture 100.00% Electron Capture with delayed Proton Emission 100.00% 18 1.6670 seconds Electron Capture 100.00% 19 17.22 seconds Electron Capture 100.00% 20 STABLE - -

204

It's Elemental - Isotopes of the Element Copper  

NLE Websites -- All DOE Office Websites (Extended Search)

Nickel Nickel Previous Element (Nickel) The Periodic Table of Elements Next Element (Zinc) Zinc Isotopes of the Element Copper [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 63 69.15% STABLE 65 30.85% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 52 No Data Available Proton Emission No Data Available 53 < 300 nanoseconds Electron Capture No Data Available Proton Emission No Data Available 54 < 75 nanoseconds Proton Emission No Data Available 55 27 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission 15.0% 56 93 milliseconds Electron Capture 100.00%

205

It's Elemental - Isotopes of the Element Boron  

NLE Websites -- All DOE Office Websites (Extended Search)

Beryllium Beryllium Previous Element (Beryllium) The Periodic Table of Elements Next Element (Carbon) Carbon Isotopes of the Element Boron [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 10 19.9% STABLE 11 80.1% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 6 No Data Available Double Proton Emission (suspected) No Data Available 7 3.255×10-22 seconds Proton Emission No Data Available Alpha Decay No Data Available 8 770 milliseconds Electron Capture 100.00% Electron Capture with delayed Alpha Decay 100.00% 9 8.439×10-19 seconds Proton Emission 100.00% Double Alpha Decay 100.00%

206

It's Elemental - Isotopes of the Element Tungsten  

NLE Websites -- All DOE Office Websites (Extended Search)

Tantalum Tantalum Previous Element (Tantalum) The Periodic Table of Elements Next Element (Rhenium) Rhenium Isotopes of the Element Tungsten [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 180 0.12% >= 6.6×10+17 years 182 26.50% STABLE 183 14.31% > 1.3×10+19 years 184 30.64% STABLE 186 28.43% > 2.3×10+19 years Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 157 275 milliseconds Electron Capture No Data Available 158 1.25 milliseconds Alpha Decay 100.00% 158m 0.143 milliseconds Isomeric Transition No Data Available Alpha Decay No Data Available 159 7.3 milliseconds Alpha Decay ~ 99.90%

207

It's Elemental - Isotopes of the Element Radon  

NLE Websites -- All DOE Office Websites (Extended Search)

Astatine Astatine Previous Element (Astatine) The Periodic Table of Elements Next Element (Francium) Francium Isotopes of the Element Radon [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Radon has no naturally occurring isotopes. Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 193 1.15 milliseconds Alpha Decay 100.00% 194 0.78 milliseconds Alpha Decay 100.00% 195 6 milliseconds Alpha Decay 100.00% 195m 5 milliseconds Alpha Decay 100.00% 196 4.4 milliseconds Alpha Decay 99.90% Electron Capture ~ 0.10% 197 53 milliseconds Alpha Decay 100.00% 197m 25 milliseconds Alpha Decay 100.00% 198 65 milliseconds Alpha Decay No Data Available

208

It's Elemental - Isotopes of the Element Carbon  

NLE Websites -- All DOE Office Websites (Extended Search)

Boron Boron Previous Element (Boron) The Periodic Table of Elements Next Element (Nitrogen) Nitrogen Isotopes of the Element Carbon [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 12 98.93% STABLE 13 1.07% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 8 1.981×10-21 seconds Proton Emission 100.00% Alpha Decay No Data Available 9 126.5 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission 61.60% Electron Capture with delayed Alpha Decay 38.40% 10 19.308 seconds Electron Capture 100.00% 11 20.334 minutes Electron Capture 100.00% 12 STABLE - -

209

It's Elemental - Isotopes of the Element Rhenium  

NLE Websites -- All DOE Office Websites (Extended Search)

Tungsten Tungsten Previous Element (Tungsten) The Periodic Table of Elements Next Element (Osmium) Osmium Isotopes of the Element Rhenium [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 185 37.40% STABLE 187 62.60% 4.33×10+10 years Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 159 No Data Available No Data Available No Data Available 160 0.82 milliseconds Proton Emission 91.00% Alpha Decay 9.00% 161 0.44 milliseconds Proton Emission 100.00% Alpha Decay <= 1.40% 161m 14.7 milliseconds Alpha Decay 93.00% Proton Emission 7.00% 162 107 milliseconds Alpha Decay 94.00% Electron Capture 6.00%

210

Ray tracing of Jovian kilometric radiation  

SciTech Connect

Results of computer ray tracing of Jovian kilometric from 56.2 kHz to 1 MHz in a model Jovian magnetosphere with an Io torus are presented. Ray tracing calculations indicate that the Io torus presents a propagation barrier to the radiation and that the Jovian kilometric radiation must be generated in the L-O mode from a source near Jupiter on field lines passing through the Io torus. One effect of the Io torus is to refract the rays away from the magnetic equator forming a shadow zone at radial distances beyond the torus. In general, at radial distances greater than 10 Jovian radii, as the wave frequency increases (>200 kHz) so does the magnetic latitude of the shadow zone. These and other features of the ray tracing calculations are in good qualitative agreement with the observations from the plasma wave receiver and planetary radio astronomy experiment on board both Voyager 1 and 2.

Green, J.L.; Gurnett, D.A.

1980-01-01T23:59:59.000Z

211

Building Energy Software Tools Directory: TRACE 700  

NLE Websites -- All DOE Office Websites (Extended Search)

700 700 TRACE 700 logo. Trane's TRACE 700 software - the latest version of Trane Air Conditioning Economics - brings the algorithms recommended by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) to the familiar Windows operating environment. Use it to assess the energy and economic impacts of building-related selections such as architectural features, comfort-system design, HVAC equipment selections, operating schedules, and financial options. Flexible data entry, coupled with multiple views and "drag-and-drop" load assignments, simplify the modeling process and help you identify optimal zoning and plant configurations. Compare up to four alternatives for a single project by modeling various air distribution and mechanical

212

Trace fossil assemblages in selected shelf sandstones  

E-Print Network (OSTI)

with progradation of the delta. The presence of trace fossils throughout the section, as compared to the lack of burrows in the upper unit of the True Watt A-1 section, can be attributed to the marginal location of the deposits. Santa Fe 13 and Santa Fe 10... with progradation of the delta. The presence of trace fossils throughout the section, as compared to the lack of burrows in the upper unit of the True Watt A-1 section, can be attributed to the marginal location of the deposits. Santa Fe 13 and Santa Fe 10...

Locke, Kathleen Ann

2012-06-07T23:59:59.000Z

213

Tracing compressed curves in triangulated surfaces  

Science Journals Connector (OSTI)

A simple path or cycle in a triangulated surface is normal if it intersects any triangle in a finite set of arcs, each crossing from one edge of the triangle to another. We describe an algorithm to "trace" a normal curve in O(min set{X, n2log ... Keywords: computational topology, geodesics, normal coordinates

Jeff Erickson; Amir Nayyeri

2012-06-01T23:59:59.000Z

214

Trace gas contaminant control in a space station atmosphere using adsorption  

SciTech Connect

Trace contaminants enter spacecraft atmospheres through offgassing of spacecraft materials and as products of crew metabolism. The consequences of fire or accidental release of toxic vapors from onboard systems is also a crew safety concern. The purpose of this work was to determine how these contaminants could be limited to safe concentrations in the atmosphere of the proposed space station. Contaminant source models were developed from spacecraft material offgassing and human metabolic production rate measurements. Contaminants were represented with a simplified model of 30 compounds by grouping similar species together. A trace contaminant control process, which consists of chemisorption of ammonia on phosphoric acid-impregnated activated carbon, ambient temperature catalytic oxidation of hydrogen and carbon monoxide, catalytic conversion of the sulfur in hydrogen sulfide and mercaptans to elemental sulfur, and adsorption of the other contaminants in a regenerable activated carbon adsorber, was proposed. Trace contaminant adsorption rate and equilibrium equations were derived. Various adsorbents were evaluated to determine the optimum sorbents for this application. Removal system performance limits were established, and optimum design ranges for process parameters were developed. Trace gas contaminants can be limited to safe concentrations by the process proposed under normal conditions using as little as 1 Kg/man-year of ammonia chemisorbent. The most likely accidental contaminant releases can be removed in {approximately}20 hours using frequent adsorber regenerations.

Winter, J.D.

1988-01-01T23:59:59.000Z

215

T-720: Blue Coat Director HTTP Trace Processing Flaw Permits...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks T-720: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks...

216

It's Elemental - Isotopes of the Element Nitrogen  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Carbon Previous Element (Carbon) The Periodic Table of Elements Next Element (Oxygen) Oxygen Isotopes of the Element Nitrogen [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 14 99.636% STABLE 15 0.364% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 10 No Data Available Proton Emission 100.00% 11 5.49×10-22 seconds Proton Emission 100.00% 12 11.000 milliseconds Electron Capture 100.00% 13 9.965 minutes Electron Capture 100.00% 14 STABLE - - 15 STABLE - - 16 7.13 seconds Beta-minus Decay 100.00% Beta-minus Decay with delayed Alpha Decay 1.2×10-3 % 17 4.173 seconds Beta-minus Decay 100.00%

217

Automation of organic elemental analysis  

Science Journals Connector (OSTI)

Automation of organic elemental analysis ... Describes the development and design of an apparatus for automated organic elemental analysis. ...

Velmer B. Fish

1969-01-01T23:59:59.000Z

218

Procedure for Cleaning Bottles for Trace Metal Analysis Initial cleaning  

E-Print Network (OSTI)

Procedure for Cleaning Bottles for Trace Metal Analysis Initial cleaning: Supplies LDPE 60ml bottles (nalgene) ACS grade Hydrochloric acid Trace metal grade nitric acid Day 1 1. Submerge 60ml bottles for up to three uses) 2. Rinse 3x in milli-q (DI) water 3. Fill bottles with 2% trace metal grade nitric

Paytan, Adina

219

Removal of trace olefins from aromatic hydrocarbons  

SciTech Connect

A process is described for treating a hydrocarbon process stream by converting trace quantities of olefinic impurities to nonolefinic hydrocarbons. The process comprises contacting the process stream, which contains trace olefins in an amount of from about 50 to about 2000 as measured by Bromine Index and at least 80% by weight of aromatic and naphthenic hydrocarbons having from 6 to 20 carbon atoms per molecule, at reaction conditions which ensure liquid phase operation with a solid catalyst composite comprising a crystalline aluminosilicate zeolite and a refractory inorganic oxide. A catalytic olefin-consuming alkylation reaction then produces an essentially olefinfree product stream with approximately the same quantity and distribution of aromatic and naphthenic hydrocarbons as contained in the process stream.

Sachtler, J.W.A.; Barger, P.T.

1989-01-03T23:59:59.000Z

220

Improve reformer operation with trace sulfur removal  

SciTech Connect

Modern bimetallic reforming catalysts typically have feed specifications for sulfur of 0.5 to 1 wppm in the reformer naphtha carge. Sulfur in the raw naphtha is reduced to this level by naphtha hydrotreating. While most naphtha hydrotreating operations can usually obtain these levels without substantial problems. It is difficult to obtain levels much below 0.5 to 1 wppm with this process. Revamp of a constrained existing hydrotreater to reduce product sulfur slightly can be extremely costly typically entailing replacement or addition of a new reactor. At Engelhard the authors demonstrated that if the last traces of sulfur remaining from hydrotreating can be removed, the resulting ultra-low sulfur feed greatly improves the reformer operation and provides substantial economic benefit to the refiner. Removal of the remaining trace sulfur is accomplished in a simple manner with a special adsorbent bed, without adding complexity to the reforming operation.

McClung, R.G.; Novak, W.J.

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Josephson junction element  

SciTech Connect

A sandwich-type josephson junction element wherein a counter electrode is made of a mo-re alloy which contains 10-90 atomic-% of re. The josephson junction element has a high operating temperature, and any deterioration thereof attributed to a thermal cycle is not noted.

Kawabe, U.; Tarutani, Y.; Yamada, H.

1982-03-09T23:59:59.000Z

222

Proceedings of transuranium elements  

SciTech Connect

The identification of the first synthetic elements was established by chemical evidence. Conclusive proof of the synthesis of the first artificial element, technetium, was published in 1937 by Perrier and Segre. An essential aspect of their achievement was the prediction of the chemical properties of element 43, which had been missing from the periodic table and which was expected to have properties similar to those of manganese and rhenium. The discovery of other artificial elements, astatine and francium, was facilitated in 1939-1940 by the prediction of their chemical properties. A little more than 50 years ago, in the spring of 1940, Edwin McMillan and Philip Abelson synthesized element 93, neptunium, and confirmed its uniqueness by chemical means. On August 30, 1940, Glenn Seaborg, Arthur Wahl, and the late Joseph Kennedy began their neutron irradiations of uranium nitrate hexahydrate. A few months later they synthesized element 94, later named plutonium, by observing the alpha particles emitted from uranium oxide targets that had been bombarded with deuterons. Shortly thereafter they proved that is was the second transuranium element by establishing its unique oxidation-reduction behavior. The symposium honored the scientists and engineers whose vision and dedication led to the discovery of the transuranium elements and to the understanding of the influence of 5f electrons on their electronic structure and bonding. This volume represents a record of papers presented at the symposium.

Not Available

1992-01-01T23:59:59.000Z

223

Trace analysis of atmospheric organic bases  

E-Print Network (OSTI)

analysis of atmospheric organic bases were investigated; the study included (1) the analysis of submarine charcoal filter bed samples for nitrogen bases and (2) the use of metallic tetraphenylporphines (TPP) as specific adsorbents for atmospheric... gas chromatography (GC) and GC-mass spectrometry (GC-MS). The isolation procedure provided acceptable reproducibi lity in the determination of trace amounts of nitrogen bases in the submarine environment. Several metallic TPP adsorbents were...

Clark, Dwayne C.

2012-06-07T23:59:59.000Z

224

Compound and Elemental Analysis At Nw Basin & Range Region (Coolbaugh, Et  

Open Energy Info (EERE)

10) 10) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At NW Basin & Range Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Northwest Basin and Range Geothermal Region Exploration Technique Compound and Elemental Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa

225

Distribution of trace elements in the tissues of benthic and pelagic fish from the Kerguelen Islands  

E-Print Network (OSTI)

Cd g-1 dry wt and 1.51 µg Hg g-1 dry wt) for these toxic metals as well as for edible and non. Keywords : Antarctic ; Heavy metals ; Cd-enrichment ; Myctophidae INTRODUCTION Heavy metal concentrations high toxic metal concentrations, especially for Cd and Hg, in comparison with those from northern

Boyer, Edmond

226

Selected Trace Elements in the Sacramento River, California: Occurrence and Distribution  

E-Print Network (OSTI)

, thallium, thulium, uranium, vanadium, tungsten, yttrium, ytterbium, zinc, and zirconium--were measured ranged from 900 lg/L at Spring Creek (Iron Mountain acid mine drainage into Keswick Reservoir) to 0.65 lg to the delta in San Francisco Bay plays an important role in understanding the impact of mining, agriculture

227

ARTICLE IN PRESS Sedimentary trace element constraints on the role of North Atlantic  

E-Print Network (OSTI)

occurred in two phases (Sinton and Duncan, 1998). The initial pulse (~60­62 Ma) produced basalt along distributed silicic ash falls (Knox and Morton, 1988; Sinton a

Bralower, Timothy J.

228

Chondrule trace element geochemistry at the mineral scale Emmanuel JACQUET1*  

E-Print Network (OSTI)

. Candidate heating/forming mechanisms, such as gas-liquid condensation (e.g., Blander et al. 2004; Varela et to the chondrule melt, as in the gas-melt interaction scenario of Libourel et al. (2006). The rapid cooling rate reservoirs sampled by chondrites. It is traditionally assumed that chondrule precursors were millimeter

Demouchy, Sylvie

229

Kinetic isotope and trace element partitioning during calcite precipitation from aqueous solution  

E-Print Network (OSTI)

minerals including trona and halite make up the bulk ofCalcite, Aragonite, Quartz, Halite Tufa Aragonite, MagnesianTufa Aragonite Tufa Aragonite, Halite Tufa Aragonite, Trona,

Nielsen, Laura Christina

2012-01-01T23:59:59.000Z

230

Characteristics of coal ashes in Yanzhou mining district and distribution of trace elements in them  

Science Journals Connector (OSTI)

In the process of combustion of coal organic and inorganic materials in it will ... them will become volatiles and, together with coal smoke, enter into atmosphere, some will remain in micro-particulates such as

Guijian Liu; Zicheng Peng; Pingyue Yang; Herong Gui

2001-12-01T23:59:59.000Z

231

On the determination of trace elements in cocoa and coffee by instrumental neutron activation analysis  

E-Print Network (OSTI)

. Charlene Helton for her helpful and productive suggestions, and, of course, for undertaking the laborious task or. typing the final manuscript. DEDICATION To mv parents. TABLE OF CONTENTS Chapter ~Pa e INTRODUCTION THEORY Neutron Activation..., commercial cocoa. CHAPTER II THEORY Neutron Activation Analysis Neutron Activation Analysis was proposed by Von Hevesy and Levi in 1936 (32). hey irradiated a yttrium sample with neutrons from a radium-beryllium source and determined the im urity...

Adanuvor, Prosper Kwasi

2012-06-07T23:59:59.000Z

232

Flow, Salts, and Trace Elements in the Rio Grande: A Review  

E-Print Network (OSTI)

must then focus on either in- creasing salt removal, minimizing salt inflow into the Rio Grande, or reducing evaporative losses of water, which concentrate salts. Although techniques to remove salts such as reverse os- mosis and electrodialysis exist...

Miyamoto, S.; Fenn, L. B.; Swietlik, D.

1995-01-01T23:59:59.000Z

233

Detrimental Effects Associated with Trace Element Uptake in Lake Chubsuckers (Erimyzon sucetta) Exposed to Polluted Sediments  

E-Print Network (OSTI)

. For example, investigations near the D-area coal-fired power plant on the Savannah River Site (SRS), Aiken, SC. Gariboldi,1 J. D. Congdon1 1 Savannah River Ecology Laboratory, Aiken, South Carolina 29802, USA 2 drain into the Savannah River. Organisms utilizing the disposal basins and downstream habitats

Hopkins, William A.

234

TRACE ELEMENTS LEACHING FROM ORGANIC SOILS STABILIZED WITH HIGH CARBON FLY ASH  

E-Print Network (OSTI)

53706 USA, chbenson@wisc.edu 3 Associate Professor, Department of Civil and Environmental Engineering INTRODUCTION Fly ash is a silt-size particulate collected by air pollution control systems at coal and transport of large volumes of soft soil and replacement with crushed rock from quarries. Eliminating removal

Aydilek, Ahmet

235

LASER SPECTROSCOPY AND TRACE ELEMENT ANALYSIS Chapter from the Energy and Environment Division Annual Report 1980  

E-Print Network (OSTI)

of Solar Energy, Photovoltaic Energy Systems Division, U.S.methods for energy conversion such as photovoltaic solar

Various, Authors

2014-01-01T23:59:59.000Z

236

Trace element content in tea brewed in traditional metallic and stainless steel teapots  

Science Journals Connector (OSTI)

The migration of metals in tea brewed in metallic teapots was investigated. The teapots were obtained from North Africa stores in ... prepare the tea. Tea brewed in metallic teapots was compared to tea brewed in ...

D. Petit; W. El Houari; K. Jacobs; W. Baeyens

2013-11-01T23:59:59.000Z

237

Thematic Questions about Chemical Elements Nature of the chemical elements  

E-Print Network (OSTI)

Be Atomic No. 1 2 3 4 Isotopes 1,2,3 3,4 6,7 9,10 Name Boron Carbon Nitrogen Oxygen Symbol B C N O Atomic No Environment Element Synthesis: Exploration of Chemical Fundamentals Element Synthesis and Isotopes · Elemental Abundance and Isotopes · distribution of elements in the universe · factors that define elemental

Polly, David

238

Development of a three-dimensional finite element model of a horse's foot  

E-Print Network (OSTI)

of a horse's foot and attempt to validate it using experimentally obtamed strain results. A Suite element model was constructed using geometric data &om traced outlines of slices cut lrom an actual foot. The model was analyzed using the ABAQUS Suite... element analysis code and strain results were obtamed which were found to difFer signi6cantly &om experimental resuhs. Based on iinformation from the literature, it was determmed that the structure of the model is essentially sound and discrepancies...

Hanft, Joseph Thomas

2012-06-07T23:59:59.000Z

239

Element 103, Lawrencium  

Science Journals Connector (OSTI)

... formed on February 14 by bombarding 3 (Jigm. of californium (element 98) with boron-10 or boron-11 nuclei in a heavy-ion linear accelerator at the Lawrence Radiation Laboratory ...

1961-04-29T23:59:59.000Z

240

Heat kernels and the range of the trace on completions of twisted group algebras.  

E-Print Network (OSTI)

Heat kernels are used in this paper to express the analytic index of projectively invariant Dirac type operators on G-covering spaces of compact manifolds, as elements in the K-theory of certain unconditional completions of the twisted group algebra of G. This is combined with V. Lafforgue's results in the untwisted case, to compute the range of the trace on the K-theory of these algebras, under the hypothesis that G is in the class C' (defined by V. Lafforgue).

Varghese Mathai (U. Adelaide).; 398 (2006) 321-346

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

SOFC Anode Interaction with Trace Coal Syngas Species U.S. Dept of Energy, National Energy Technology Laboratory, Morgantown, WV 26507  

NLE Websites -- All DOE Office Websites (Extended Search)

SOFC Anode Interaction with Trace Coal Syngas Species SOFC Anode Interaction with Trace Coal Syngas Species U.S. Dept of Energy, National Energy Technology Laboratory, Morgantown, WV 26507 Gregory Hackett, Kirk Gerdes, Randall Gemmen Phone: (304)285-5279, Gregory.Hackett@NETL.DOE.GOV Utilization of coal as a fuel source for highly efficient integrated gasification fuel cell (IGFC) power generation facilities is technologically and environmentally attractive. IGFC plants are expected to offer the highest efficiency coal gasification processes, even when carbon capture and storage systems are included in the design. One element of IGFC research at the National Energy Technology Laboratory is the investigation of syngas cleanup processes for these integrated systems. Of particular interest are the effects of trace elements naturally contained in

242

Elements of environmental concern in the 1990 Clean Air Act Amendments: A perspective of Fort Union coals in northern Rocky Mountains and Great Plains region  

SciTech Connect

The elements of environmental concern (EECs) named in the 1990 Clean Air Act Amendments include 12 trace elements consisting of antimony, arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, selenium, and uranium. Although all these trace elements are potentially hazardous, arsenic, mercury, lead, and selenium may be targeted in forthcoming Environmental Protection Agency regulations. Fort Union coals contain all the trace elements named in the Clean Air Act Amendments; however, the presence and amounts of individual trace elements vary from basin to basin. In the Powder River Basin, the major producing Fort Union coals (Wyodak-Anderson and equivalent coal beds, and Rosebud coal bed) contain the lowest (or statistically as low) amounts of EECs of any of the coal producing basins (i.e., Williston, Hanna, and Green River) in the region. In addition, when the arithmetic means of these trace elements in Powder River Basin coals are compared to other regions in the conterminous US, they are lower than those of Cretaceous coals in Colorado Plateau, Tertiary lignites in the Gulf Coast, and Pennsylvanian coals in the Illinois and Appalachian Basins. Thus, elements of environmental concern are generally low in Fort Union coals in the Northern Rocky Mountains and Great Plains region, and particularly low in the Powder River Basin. Projected increase in production of Powder River Basin coals will, therefore, be of greater benefit to the nation than an increase in development and production of coals in other basins.

Stricker, G.D.; Ellis, M.E.; Flores, R.M.; Bader, L.R.

1998-07-01T23:59:59.000Z

243

Elements of environmental concern in the 1990 Clean Air Act amendments: A perspective of Fort Union coals in northern Rocky Mountains and Great Plains region  

SciTech Connect

The elements of environmental concern (EECs) named in the 1990 Clean Air Act Amendments include 12 trace elements consisting of antimony, arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, selenium, and uranium. Although all these trace elements are potentially hazardous, arsenic, mercury, lead, and selenium may be targeted in forthcoming Environmental Protection Agency regulations. Fort Union coals contain all the trace elements named in the Clean Air Act Amendments; however, the presence and amounts of individual trace elements vary from basin to basin. In the Powder River Basin, the major producing Fort Union coals (Wyodak-Anderson and equivalent coal beds, and Rosebud coal bed) contain the lowest (or statistically as low) amounts of EECs of any of the coal producing basins (i.e. Williston, Hanna, and Green River) in the region. In addition, when the arithmetic means of these trace elements in Powder River Basin coals are compared to other regions in the conterminous U.S., they are lower than those of Cretaceous coals in Colorado Plateau, Tertiary lignites in the Gulf Coast, and Pennsylvanian coals in the Illinois and Appalachian Basins. Thus, elements of environmental concern are generally low in Fort Union coals in the Northern Rocky Mountains and Great Plains region, and particularly low in the Powder River Basin. Projected increase in production of Powder River Basin coals will, therefore, be of greater benefit to the nation than an increase in development and production of coals in other basins.

Stricker, G.D.; Ellis, M.E.; Flores, R.M.; Bader, L.R. [Geological Survey, Denver, CO (United States)

1998-04-01T23:59:59.000Z

244

Jefferson Lab Science Series - The Origin of the Elements  

NLE Websites -- All DOE Office Websites (Extended Search)

You Already Know This Physics! You Already Know This Physics! Previous Video (You Already Know This Physics!) Science Series Video Archive Next Video (Guesstimating the Environment) Guesstimating the Environment The Origin of the Elements Dr. Edward Murphy - University of Virginia, Department of Astronomy November 13, 2012 The world around us is made of atoms. Did you ever wonder where these atoms came from? How was the gold in our jewelry, the carbon in our bodies, and the iron in our cars made? In this lecture, we will trace the origin of a gold atom from the Big Bang to the present day, and beyond. You will learn how the elements were forged in the nuclear furnaces inside stars, and how, when they die, these massive stars spread the elements into space. You will learn about the origin of the building blocks of matter in the Big Bang,

245

Reconstructing the cosmic evolution of the chemical elements  

E-Print Network (OSTI)

The chemical elements are created in nuclear fusion processes in the hot and dense cores of stars. The energy generated through nucleosynthesis allows stars to shine for billions of years. When these stars explode as massive supernovae, the newly made elements are expelled, chemically enriching the surrounding regions. Subsequent generations of stars are formed from gas that is slightly more element enriched than that from which previous stars formed. This chemical evolution can be traced back to its beginning soon after the Big Bang by studying the oldest and most metal-poor stars still observable in the Milky Way today. Through chemical analysis, they provide the only available tool for gaining information about the nature of the short-lived first stars and their supernova explosions more than thirteen billion years ago. These events set in motion the transformation of the pristine universe into a rich cosmos of chemically diverse planets, stars, and galaxies.

Frebel, Anna

2014-01-01T23:59:59.000Z

246

Sandia National Laboratories: CSP: ELEMENTS  

NLE Websites -- All DOE Office Websites (Extended Search)

CSP: ELEMENTS Sandia Researchers Win CSP:ELEMENTS Funding Award On June 4, 2014, in Advanced Materials Laboratory, Concentrating Solar Power, Energy, Energy Storage, Facilities,...

247

Laser Based Techniques for Ultra Trace Isotope Production, Spectroscopy and Detection  

SciTech Connect

A variety of research activities in the field of fundamental and applied nuclear physics has evolved in the last years using resonantly tuned radiation from powerful lasers. The technique of resonance ionization spectroscopy has delivered outstanding results and found broad acceptance in the last years as a particularly efficient and highly selective method for rare and exotic radioisotope studies. It is used for production, spectroscopy and detection of these species and provides complete isobaric, high isotopic and even some isomeric selection, which altogether is needed for on-line investigation of short lived species far off stability as well as for ultra trace determination. Good overall efficiency pushes the experimental limits of detection in elemental trace analysis down to below 106 atoms per sample, and additionally isotopic selectivity as high as 3 ? 1012 has been demonstrated. The widespread potential of resonance ionization techniques is discussed, focusing on the experimental arrangements for applications in selective on-line isotope production, spectroscopy of rare radioisotopes and ultra trace determination of radiotoxic isotopes like 238Pu to 244Pu, 135,137Cs, 89,90Sr or 41Ca in environmental, technical and biomedical samples.

Wendt, K.; Blaum, K; Geppert, C; Muller, P; Nortershauser, W.; Schmitt, Annette; Schumann, P; Trautmann, Norbert; Bushaw, Bruce A.

2006-06-26T23:59:59.000Z

248

Elemental sulfur recovery process  

DOE Patents (OSTI)

An improved catalytic reduction process for the direct recovery of elemental sulfur from various SO[sub 2]-containing industrial gas streams. The catalytic process provides combined high activity and selectivity for the reduction of SO[sub 2] to elemental sulfur product with carbon monoxide or other reducing gases. The reaction of sulfur dioxide and reducing gas takes place over certain catalyst formulations based on cerium oxide. The process is a single-stage, catalytic sulfur recovery process in conjunction with regenerators, such as those used in dry, regenerative flue gas desulfurization or other processes, involving direct reduction of the SO[sub 2] in the regenerator off gas stream to elemental sulfur in the presence of a catalyst. 4 figures.

Flytzani-Stephanopoulos, M.; Zhicheng Hu.

1993-09-07T23:59:59.000Z

249

The Effects of Trace Contaminants on Catalytic Processing of...  

NLE Websites -- All DOE Office Websites (Extended Search)

Processing of Biomass-Derived Feedstocks . Abstract: Trace components in biomass feedstocks are potential catalyst poisons when catalytically processing these materials to...

250

Towards a Ubiquitous Semantics of Interaction: phenomenology, scenarios and traces  

E-Print Network (OSTI)

Towards a Ubiquitous Semantics of Interaction: phenomenology, scenarios and traces Alan Dix does not attempt to address the whole question, but focuses on a phenomenological semantics

Dix, Alan

251

Autonomous microexplosives subsurface tracing system final report.  

SciTech Connect

The objective of the autonomous micro-explosive subsurface tracing system is to image the location and geometry of hydraulically induced fractures in subsurface petroleum reservoirs. This system is based on the insertion of a swarm of autonomous micro-explosive packages during the fracturing process, with subsequent triggering of the energetic material to create an array of micro-seismic sources that can be detected and analyzed using existing seismic receiver arrays and analysis software. The project included investigations of energetic mixtures, triggering systems, package size and shape, and seismic output. Given the current absence of any technology capable of such high resolution mapping of subsurface structures, this technology has the potential for major impact on petroleum industry, which spends approximately $1 billion dollar per year on hydraulic fracturing operations in the United States alone.

Engler, Bruce Phillip; Nogan, John; Melof, Brian Matthew; Uhl, James Eugene; Dulleck, George R., Jr.; Ingram, Brian V.; Grubelich, Mark Charles; Rivas, Raul R.; Cooper, Paul W.; Warpinski, Norman Raymond; Kravitz, Stanley H.

2004-04-01T23:59:59.000Z

252

Tracing The Largest Seasonal Migration on Earth  

E-Print Network (OSTI)

It is estimated that over 3.6 billion passengers are travelling during the Chinese Spring Festival travel season. They leave their working cities and return their hometowns to enjoy annual family time, and back to cities after the holiday. In this study, with the massive location-based data collected from millions of smartphone users, we propose a novel method to trace the migration flow and explore the migration patterns of Chinese people. From the temporal perspective, we explore the migration trend over time during a 34-days period, about half a month before and after the Spring Festival. From the spatial perspective, the migration directions and routes are estimated and quantified, and the migration flow is visualized. The spatial range of influence of developed regions could be reflected with the destinations of migration, the migration destinations and originations have obvious characteristic of geographical proximity.

Wang, Xianwen; Mao, Wenli; Hu, Zhigang; Gu, Li

2014-01-01T23:59:59.000Z

253

Compound and Elemental Analysis At Walker-Lane Transitional Zone Region  

Open Energy Info (EERE)

Coolbaugh, Et Al., 2010) Coolbaugh, Et Al., 2010) Exploration Activity Details Location Walker-Lane Transition Zone Geothermal Region Exploration Technique Compound and Elemental Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring lithium deposits." References

254

Insect Trace Fossil Associations in Paleosols: The Coprinisphaera Ichnofacies  

Science Journals Connector (OSTI)

...Namibia Sossus Sand (Khommabes Car-bonates) Late Pleistocene...from the Pleistocene Khommabes Car-bonates of Namibia are not...1993, Trace fossils from a Car-boniferous turbiditic lake...1985, Trace fossils from the Panther Member, Star Point Formation...

JORGE F. GENISE; M. GABRIELA MNGANO; LUIS A. BUATOIS; JOS H. LAZA; MARIANO VERDE

255

Evaluating regional emission estimates using the TRACE-P observations  

E-Print Network (OSTI)

Evaluating regional emission estimates using the TRACE-P observations G. R. Carmichael,1 Y. Tang,1. Wang,6 D. R. Blake,7 E. Atlas,8 A. Fried,8 B. Potter,9 M. A. Avery,10 G. W. Sachse,10 S. T. Sandholm,11 the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) experiment are used in conjunction

Clarke, Antony

256

Reasoning by Assumption: Formalisation and Analysis of Human Reasoning Traces  

E-Print Network (OSTI)

for the traces acquired in experiments undertaken. 1 Introduction Practical reasoning processes are often not limited to single reasoning steps, but extend to traces or trajectories of a number of interrelated by assumption'. This (non-deductive) practical reasoning pattern in- volves a number of interrelated reasoning

Treur, Jan

257

Looking For Traces of Pharmaceuticals in Drinking Water  

E-Print Network (OSTI)

Looking For Traces of Pharmaceuticals in Drinking Water By Daniel D. Snow, Ph.D. Director traces of drugs in the public drinking water supplies of 24 major U.S. metropolitan areas. This has in drinking water supplies is not new, but the classes of contaminants being tested for are. Pharmaceuticals

Nebraska-Lincoln, University of

258

Element Crossword Puzzles  

NLE Websites -- All DOE Office Websites (Extended Search)

Crossword Puzzles Crossword Puzzles Welcome to It's Elemental - Element Crossword Puzzles! Use the clues provided to solve each crossword puzzle. To place letters on the puzzle, first select the clue you are answering from the pull-down menu and then enter your answer in the text box. Press the 'return' key on your keyboard when you are done. Correct letters will be green while incorrect letters will be red. Good luck and have fun! If you are reading this, your browser is NOT running JavaScript. JavaScript MUST be enabled for this section of our site to work. Once you have turned JavaScript on, reload this page and this warning will go away. Puzzle 1 - It's a Gas! Puzzle 2 - Easy Symbols Puzzle 3 - Strange Symbols Puzzle 4 - Known to the Ancients Puzzle 5 - The Alkali Metals

259

Plutonium and Other Transuranium Elements  

Science Journals Connector (OSTI)

Glenn T. Seaborg has assisted at the birth of three of the four new transuranium elements. ... GLENN T. SEABORG ...

GLENN T. SEABORG

1947-02-10T23:59:59.000Z

260

E-Print Network 3.0 - atmospheric trace gas Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry and Physics Discussions Trace gas measurements from... ., Rinsland, C. P., Stiller, G. P., and Zander, R.: On the assessment and uncertainty of atmospheric trace gas......

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Synthesis of reversible sequential elements  

Science Journals Connector (OSTI)

To construct a reversible sequential circuit, reversible sequential elements are required. This work presents novel designs of reversible sequential elements such as the D latch, JK latch, and T latch. Based on these reversible latches, we construct ... Keywords: Reversible logic, sequential circuits, sequential elements

Min-Lun Chuang; Chun-Yao Wang

2008-01-01T23:59:59.000Z

262

Chemical characterization of element 112  

Science Journals Connector (OSTI)

... directly comparing the adsorption characteristics of 283112 to that of mercury and the noble gas radon, we find that element 112 is very volatile and, unlike ... , we find that element 112 is very volatile and, unlike radon, reveals a metallic interaction with the gold surface. These adsorption characteristics establish element 112 ...

R. Eichler; N. V. Aksenov; A. V. Belozerov; G. A. Bozhikov; V. I. Chepigin; S. N. Dmitriev; R. Dressler; H. W. Gggeler; V. A. Gorshkov; F. Haenssler; M. G. Itkis; A. Laube; V. Ya. Lebedev; O. N. Malyshev; Yu. Ts. Oganessian; O. V. Petrushkin; D. Piguet; P. Rasmussen; S. V. Shishkin; A. V. Shutov; A. I. Svirikhin; E. E. Tereshatov; G. K. Vostokin; M. Wegrzecki; A. V. Yeremin

2007-05-03T23:59:59.000Z

263

The CEBAF Element Database  

SciTech Connect

With the inauguration of the CEBAF Element Database (CED) in Fall 2010, Jefferson Lab computer scientists have taken a step toward the eventual goal of a model-driven accelerator. Once fully populated, the database will be the primary repository of information used for everything from generating lattice decks to booting control computers to building controls screens. A requirement influencing the CED design is that it provide access to not only present, but also future and past configurations of the accelerator. To accomplish this, an introspective database schema was designed that allows new elements, types, and properties to be defined on-the-fly with no changes to table structure. Used in conjunction with Oracle Workspace Manager, it allows users to query data from any time in the database history with the same tools used to query the present configuration. Users can also check-out workspaces to use as staging areas for upcoming machine configurations. All Access to the CED is through a well-documented Application Programming Interface (API) that is translated automatically from original C++ source code into native libraries for scripting languages such as perl, php, and TCL making access to the CED easy and ubiquitous.

Theodore Larrieu, Christopher Slominski, Michele Joyce

2011-03-01T23:59:59.000Z

264

Halocarbon and Other Atmospheric Trace Species (HATS) | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Halocarbon and Other Atmospheric Trace Species (HATS) Halocarbon and Other Atmospheric Trace Species (HATS) Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data Halocarbon and Other Atmospheric Trace Species (HATS) Dataset Summary Description The general mission of the Halocarbons and other Atmospheric Trace Species group is to quantify the distributions and magnitudes of sources and sinks for atmospheric nitrous oxide (N2O) and halogen containing compounds. HATS utilizes numerous types of platforms, including ground-based stations, towers, ocean vessels, aircraft, and balloons, to accomplish its mission. For a detailed mission statement, consult our FAQ. Tags {"nitrous oxide","sulfur hexaflouride",CFC-11,CFC-12,CFC-113,CCl4,CH3CCl3,CH3Cl,halon-1211,HCFC-22,HCFC-142b,halocarbons,chromatograph,aircraft,balloons,vessels,ships,towers,"natural resources",environment,air,"GHG "}

265

Laboratory measurements and modeling of trace atmospheric species  

E-Print Network (OSTI)

Trace species play a major role in many physical and chemical processes in the atmosphere. Improving our understanding of the impact of each species requires a combination of laboratory exper- imentation, field measurements, ...

Sheehy, Philip M. (Philip Michael)

2005-01-01T23:59:59.000Z

266

A graphics architecture for ray tracing and photon mapping  

E-Print Network (OSTI)

Recently, methods were developed to render various global illumination e?ects with rasterization GPUs. Among those were hardware based ray tracing and photon mapping. However, due to current GPU??s inherent architectural limitations, the e...

Ling, Junyi

2005-11-01T23:59:59.000Z

267

Complex ray tracing study of electron cyclotron resonance heating  

Science Journals Connector (OSTI)

In the up-to-date ray tracing study of electron cyclotron resonance heating (ECRH) of fusion plasmas, energy absorption ... side of the tokamak plasmas approach the electron cyclotron resonance surface step by st...

Liu Hongxiu; Zhao Changlin

1986-03-01T23:59:59.000Z

268

Understanding reservoir mechanisms using phase and component streamline tracing  

E-Print Network (OSTI)

explored. The power and utility of the phase and component streamlines have been demonstrated using synthetic examples and two field cases. The new formulation of streamline tracing provides additional information about the reservoir drive mechanisms...

Kumar, Sarwesh

2009-05-15T23:59:59.000Z

269

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID...  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings:...

270

The Fidelity and Trace Norm Distances for Quantifying Coherence  

E-Print Network (OSTI)

We investigate the coherence measures induced by fidelity and trace norm, based on the recent proposed coherence quantification in [Phys. Rev. Lett. 113, 140401, 2014]. We show that the fidelity of coherence does not in general satisfy the monotonicity requirement as a measure of coherence under the subselection of measurements condition. We find that the trace norm of coherence can act as a measure of coherence for qubit case and some special class of qutrits.

Lian-He Shao; Zhengjun Xi; Heng Fan; Yongming Li

2014-10-30T23:59:59.000Z

271

Technique for identifying, tracing, or tracking objects in image data  

DOE Patents (OSTI)

A technique for computer vision uses a polygon contour to trace an object. The technique includes rendering a polygon contour superimposed over a first frame of image data. The polygon contour is iteratively refined to more accurately trace the object within the first frame after each iteration. The refinement includes computing image energies along lengths of contour lines of the polygon contour and adjusting positions of the contour lines based at least in part on the image energies.

Anderson, Robert J. (Albuquerque, NM); Rothganger, Fredrick (Albuquerque, NM)

2012-08-28T23:59:59.000Z

272

Definition: Element | Open Energy Information  

Open Energy Info (EERE)

Element Element Jump to: navigation, search Dictionary.png Element Any electrical device with terminals that may be connected to other electrical devices such as a generator, transformer, circuit breaker, bus section, or transmission line. An element may be comprised of one or more components.[1] View on Wikipedia Wikipedia Definition Electrical elements are conceptual abstractions representing idealized electrical components, such as resistors, capacitors, and inductors, used in the analysis of electrical networks. Any electrical network can be analysed as multiple, interconnected electrical elements in a schematic diagram or circuit diagram, each of which affects the voltage in the network or current through the network. These ideal electrical elements represent real, physical electrical or electronic components but

273

Photoconductive circuit element reflectometer  

DOE Patents (OSTI)

A photoconductive reflectometer for characterizing semiconductor devices at millimeter wavelength frequencies where a first photoconductive circuit element (PCE) is biased by a direct current voltage source and produces short electrical pulses when excited into conductance by short first laser light pulses. The electrical pulses are electronically conditioned to improve the frequency related amplitude characteristics of the pulses which thereafter propagate along a transmission line to a device under test. Second PCEs are connected along the transmission line to sample the signals on the transmission line when excited into conductance by short second laser light pulses, spaced apart in time a determinable period from the first laser light pulses. Electronic filters connected to each of the second PCEs act as low-pass filters and remove parasitic interference from the sampled signals and output the sampled signals in the form of slowed-motion images of the signals on the transmission line. 4 figs.

Rauscher, C.

1987-12-07T23:59:59.000Z

274

Photoconductive circuit element reflectometer  

DOE Patents (OSTI)

A photoconductive reflectometer for characterizing semiconductor devices at millimeter wavelength frequencies where a first photoconductive circuit element (PCE) is biased by a direct current voltage source and produces short electrical pulses when excited into conductance by short first laser light pulses. The electrical pulses are electronically conditioned to improve the frequency related amplitude characteristics of the pulses which thereafter propagate along a transmission line to a device under test. Second PCEs are connected along the transmission line to sample the signals on the transmission line when excited into conductance by short second laser light pulses, spaced apart in time a variable period from the first laser light pulses. Electronic filters connected to each of the second PCEs act as low-pass filters and remove parasitic interference from the sampled signals and output the sampled signals in the form of slowed-motion images of the signals on the transmission line.

Rauscher, Christen (Alexandria, VA)

1990-01-01T23:59:59.000Z

275

Solar Coronal Structures and Stray Light in TRACE  

E-Print Network (OSTI)

Using the 2004 Venus transit of the Sun to constrain a semi-empirical point-spread function for the TRACE EUV solar telescope, we have measured the effect of stray light in that telescope. We find that 43% of 171A EUV light that enters TRACE is scattered, either through diffraction off the entrance filter grid or through other nonspecular effects. We carry this result forward, via known-PSF deconvolution of TRACE images, to identify its effect on analysis of TRACE data. Known-PSF deconvolution by this derived PSF greatly reduces the effect of visible haze in the TRACE 171A images, enhances bright features, and reveals that the smooth background component of the corona is considerably less bright (and hence much more rarefied) than commonly supposed. Deconvolution reveals that some prior conlclusions about the Sun appear to have been based on stray light in the images. In particular, the diffuse background "quiet corona" becomes consistent with hydrostatic support of the coronal plasma; feature contrast is greatly increased, possibly affecting derived parameters such as the form of the coronal heating function; and essentially all existing differential emission measure studies of small features appear to be affected by contamination from nearby features. We speculate on further implications of stray light for interpretation of EUV images from TRACE and similar instruments, and advocate deconvolution as a standard tool for image analysis with future instruments such as SDO/AIA.

C. E. DeForest; P. C. H. Martens; M. J. Wills-Davey

2008-08-29T23:59:59.000Z

276

THE NEW ELEMENT CALIFORNIUM (ATOMIC NUMBER 98)  

E-Print Network (OSTI)

shell, as occurs in rare earth elements at the point ofand homologous rare earth elements in high temperaturethe homologous rare earth elements. (2) Its distinctive high

Thompson, S.G.; Street, K.,Jr.; Ghiorso, A.; Seaborg, G.T.

2008-01-01T23:59:59.000Z

277

Vertical and horizontal fluxes of selected radionuclides and trace metals off the coast of southern California  

SciTech Connect

The overall objective of our research, within the structure of the CaBS program, is to understand the transport pathways and mass balances of some metabolically-active and inactive chemical species in the Santa Monica/San Pedro (SM/SP) Basin. Our focus is to examine selected trace metals and radionuclides in seawater, sediment trap material, and bottom sediments. Knowledge of the inventories, fluxes, and routes of these nuclides and metals in or among these reservoirs should lead to a cogent model for these elements in SM/SP Basin, which in turn should shed light on the fate and effects of energy-related by-products in a coastal region impacted by intense human activities. 4 figs., 3 tabs.

Huh, C.-A.

1990-01-01T23:59:59.000Z

278

Resistive hydrogen sensing element  

DOE Patents (OSTI)

Systems and methods are described for providing a hydrogen sensing element with a more robust exposed metallization by application of a discontinuous or porous overlay to hold the metallization firmly on the substrate. An apparatus includes: a substantially inert, electrically-insulating substrate; a first Pd containing metallization deposited upon the substrate and completely covered by a substantially hydrogen-impermeable layer so as to form a reference resistor on the substrate; a second Pd containing metallization deposited upon the substrate and at least a partially accessible to a gas to be tested, so as to form a hydrogen-sensing resistor; a protective structure disposed upon at least a portion of the second Pd containing metallization and at least a portion of the substrate to improve the attachment of the second Pd containing metallization to the substrate while allowing the gas to contact said the second Pd containing metallization; and a resistance bridge circuit coupled to both the first and second Pd containing metallizations. The circuit determines the difference in electrical resistance between the first and second Pd containing metallizations. The hydrogen concentration in the gas may be determined. The systems and methods provide advantages because adhesion is improved without adversely effecting measurement speed or sensitivity.

Lauf, Robert J. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

279

Journal of the Geological Society, London, Vol. 168, 2011, pp. 805815. doi: 10.1144/0016-76492010-132. Hydrothermal origin of elevated iron, manganese and redox-sensitive trace  

E-Print Network (OSTI)

.1144/0016-76492010-132. 805 Hydrothermal origin of elevated iron, manganese and redox-sensitive trace elements in the c. 635 Ma Doushantuo cap carbonate JING HUANG1,2 , XUELEI CHU1,2 *, GANQING JIANG3 , LIANJUN FENG1 & HUAJIN, including REE, concentrations of the Doushantuo cap carbonate (c. 635 Ma) in South China show enrichment

Jiang, Ganqing

280

Thermodynamic analysis of interactions between Ni-based solid oxide fuel cells (SOFC) anodes and trace species in a survey of coal syngas  

SciTech Connect

A thermodynamic analysis was conducted to characterize the effects of trace contaminants in syngas derived from coal gasification on solid oxide fuel cell (SOFC) anode material. The effluents from 15 different gasification facilities were considered to assess the impact of fuel composition on anode susceptibility to contamination. For each syngas case, the study considers the magnitude of contaminant exposure resulting from operation of a warm gas cleanup unit at two different temperatures and operation of a nickel-based SOFC at three different temperatures. Contaminant elements arsenic (As), phosphorous (P), and antimony (Sb) are predicted to be present in warm gas cleanup effluent and will interact with the nickel (Ni) components of a SOFC anode. Phosphorous is the trace element found in the largest concentration of the three contaminants and is potentially the most detrimental. Poisoning was found to depend on the composition of the syngas as well as system operating conditions. Results for all trace elements tended to show invariance with cleanup operating temperature, but results were sensitive to syngas bulk composition. Synthesis gas with high steam content tended to resist poisoning.

Andrew Martinez; Kirk Gerdes; Randall Gemmen; James Postona

2010-03-20T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Electronic Structure of the Heaviest Elements  

E-Print Network (OSTI)

well known grou~ 14 rare earth elements of atomic numbersproposed for the rare earth elements because these 14

Seaborg, G.T.

2008-01-01T23:59:59.000Z

282

The Search for Heavy Elements  

ScienceCinema (OSTI)

The 1994 documentary "The Search for Heavy Elements" chronicles the expansion of the periodic table through the creation at Berkeley Lab of elements heavier than uranium. The documentary features a mix of rarely-seen archival footage, historical photos, and interviews with scientists who made history, such as Glenn Seaborg and Albert Ghiorso.

None

2010-01-08T23:59:59.000Z

283

The Search for Heavy Elements  

SciTech Connect

The 1994 documentary "The Search for Heavy Elements" chronicles the expansion of the periodic table through the creation at Berkeley Lab of elements heavier than uranium. The documentary features a mix of rarely-seen archival footage, historical photos, and interviews with scientists who made history, such as Glenn Seaborg and Albert Ghiorso.

2008-04-17T23:59:59.000Z

284

Building Energy Software Tools Directory: TRACE Load 700  

NLE Websites -- All DOE Office Websites (Extended Search)

Load 700 Load 700 TRACE Load 700 logo. Use TRACE Load 700 software - the building and load design modules of TRACE 700, Trane Air Conditioning Economics - to evaluate the effect of building orientation, size, shape, and mass based on hourly weather data and the resulting heat-transfer characteristics of air and moisture. To assure calculation integrity, the program uses algorithms recommended by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). Choose from eight different ASHRAE cooling and heating methodologies, including the Exact Transfer Function. The program encourages "what if" analyses, allowing the user to enter construction details in any order and then easily change the resulting building model as the design progresses. Multiple project views and "drag-and-drop"

285

CSIRO GASLAB Network: Individual Flask Measurements of Atmospheric Trace  

NLE Websites -- All DOE Office Websites (Extended Search)

GASLAB Network GASLAB Network CSIRO GASLAB Network: Individual Flask Measurements of Atmospheric Trace Gases (April 2003) data Data Investigators L.P. Steele, P.R. Krummel, and R.L. Langenfelds Commonwealth Scientific and Industrial Research Organisation (CSIRO) DOI 10.3334/CDIAC/atg.db1021 Data are available for four atmospheric trace gases at nine stationary sites and one moving platform (aircraft over Cape Grim, Tasmania, and Bass Strait, between the Australian continent and Tasmania). The trace gases are carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), and hydrogen (H2). Measurements of δ13C from CO2 are also included in this database. The nine stationary sites are, from north to south: Alert, Canada; Shetland Islands, Scotland; Estevan Point, Canada; Mauna Loa, Hawaii; Cape Ferguson,

286

Natchez Trace Elec Power Assn | Open Energy Information  

Open Energy Info (EERE)

Natchez Trace Elec Power Assn Natchez Trace Elec Power Assn Jump to: navigation, search Name Natchez Trace Elec Power Assn Place Mississippi Utility Id 13227 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service (1001 kW-5000kW) Industrial General Service (50 kW and Under) Commercial General Service (51 kW-1000 kW) Commercial Outdoor Lighting HPS 100 W Lighting Outdoor Lighting HPS 100 W Dedicated Pole Lighting Outdoor Lighting HPS 100 W Dedicated Pole & Transformer Lighting Outdoor Lighting HPS 100 W Dedicated Transformer Lighting

287

Heat Trace and Functional Determinant in One Dimension  

E-Print Network (OSTI)

We study the spectral properties of the Laplace type operator on the circle. We discuss various approximations for the heat trace, the zeta function and the zeta-regularized determinant. We obtain a differential equation for the heat kernel diagonal and a recursive system for the diagonal heat kernel coefficients, which enables us to find closed approximate formulas for the heat trace and the functional determinant which become exact in the limit of infinite radius. The relation to the generalized KdV hierarchy is discussed as well.

Ivan G Avramidi

2014-06-05T23:59:59.000Z

288

Terminological aspects of data elements  

SciTech Connect

The creation and display of data comprise a process that involves a sequence of steps requiring both semantic and systems analysis. An essential early step in this process is the choice, definition, and naming of data element concepts and is followed by the specification of other needed data element concept attributes. The attributes and the values of data element concept remain associated with them from their birth as a concept to a generic data element that serves as a template for final application. Terminology is, therefore, centrally important to the entire data creation process. Smooth mapping from natural language to a database is a critical aspect of database, and consequently, it requires terminology standardization from the outset of database work. In this paper the semantic aspects of data elements are analyzed and discussed. Seven kinds of data element concept information are considered and those that require terminological development and standardization are identified. The four terminological components of a data element are the hierarchical type of a concept, functional dependencies, schematas showing conceptual structures, and definition statements. These constitute the conventional role of terminology in database design. 12 refs., 8 figs., 1 tab.

Strehlow, R.A. (Oak Ridge National Lab., TN (United States)) [Oak Ridge National Lab., TN (United States); Kenworthey, W.H. Jr. (Department of Defense, Washington, DC (United States)) [Department of Defense, Washington, DC (United States); Schuldt, R.E. (Martin Marietta Aerospace, Denver, CO (United States)) [Martin Marietta Aerospace, Denver, CO (United States)

1991-01-01T23:59:59.000Z

289

Trace formula for dielectric cavities III: TE modes  

E-Print Network (OSTI)

The construction of the semiclassical trace formula for the resonances with the transverse electric (TE) polarization for two-dimensional dielectric cavities is discussed. Special attention is given to the derivation of the two first terms of Weyl's series for the average number of such resonances. The obtained formulas agree well with numerical calculations for dielectric cavities of different shapes.

E. Bogomolny; R. Dubertrand

2012-06-15T23:59:59.000Z

290

DARK MATTER Tracing the "Cosmic Web" with Diffuse Gas  

E-Print Network (OSTI)

1 DARK MATTER STARS GAS NEUTRAL HYDROGEN Tracing the "Cosmic Web" with Diffuse Gas Quasar Quasar Absorption Lines Keck/HIRES Quasar Spectrum Observer baryons dark matter potential isotropic UV only on and the radiation field intensity... H I #12;5 GOAL: the primordial dark matter power spectrum

Steidel, Chuck

291

Generating and Analyzing Symbolic Traces of Simulink/Stateflow Models  

E-Print Network (OSTI)

of the model and the simulation traces. We propose a new represen­ tation, called the bounded vertex that enables the development, testing, and rapid prototyping of control software, supported by automated code, the semantics of these models is loosely defined in terms of a simulation engine. The lack of clearly specified

Sankaranarayanan, Sriram

292

Realistic Performance Analysis of WSN Protocols Through Trace Based Simulation  

E-Print Network (OSTI)

. Generic network simulators are often used, but they tend to rely on synthetic models. Because WSN enable trace based WSN simulation by first enhancing an existing WSN profiler that automates. These include simulation area, node density, radio model, noise model, etc. These parameters are used

Han, Qi "Chee"

293

Inferring human mobility patterns from taxicab location traces  

Science Journals Connector (OSTI)

Taxicabs equipped with real-time location sensing devices are increasingly becoming popular. Such location traces are a rich source of information and can be used for congestion pricing, taxicab placement, and improved city planning. An important problem ... Keywords: hidden markov models, human mobility patterns, taxi cab occupancy, trajectory analysis

Raghu Ganti; Mudhakar Srivatsa; Anand Ranganathan; Jiawei Han

2013-09-01T23:59:59.000Z

294

Learning web-service task descriptions from traces  

Science Journals Connector (OSTI)

This paper considers the problem of learning task specific web-service descriptions from traces of users successfully completing a task. Unlike prior approaches, we take a traditional machine-learning perspective to the construction of web-service models ... Keywords: Apprenticeship Learning, Machine Learning, Sample Complexity, Web Services

Thomas J. Walsh; Michael L. Littman; Alexander Borgida

2012-10-01T23:59:59.000Z

295

GROUP TESTING MEETS TRAITOR TRACING Peter Meerwald and Teddy Furon  

E-Print Network (OSTI)

of the restriction of M to K. Many papers have proposed bounds on the minimal num- ber of tests or practical designs noise (q is the false positive test probability) [2]. Sejdinovic and Johnson recently considered bothGROUP TESTING MEETS TRAITOR TRACING Peter Meerwald and Teddy Furon INRIA Rennes Bretagne Atlantique

Paris-Sud XI, Université de

296

Trace Environmental Quantitative Analysis: Principles, Techniques and Applications, 2nd  

E-Print Network (OSTI)

, California State UniVersity, Los Angeles JA0599418 10.1021/ja0599418 CRC Handbook of Chemistry and Physics and field- based techniques. Loconto's book does a superlative job of introducing the concept of trace edition of this famous handbook continues to provide up-to-date, critically evaluated chemical

Zubarev, Eugene

297

A Feasibility Study: Mining Daily Traces for Home Heating Control  

E-Print Network (OSTI)

savings as well as 14.9%­59.2% reduction in miss time. Keywords Energy, home heating, daily traces, prediction 1. INTRODUCTION Heating, ventilation and cooling (HVAC) contributes most to a home's energy bills, accounting for 48% of residential energy consumption in the U.S. and 61% in the U.K., 64% in Canada where

Whitehouse, Kamin

298

Age of Neoproterozoic Bilatarian Body and Trace Fossils, White  

E-Print Network (OSTI)

Age of Neoproterozoic Bilatarian Body and Trace Fossils, White Sea, Russia: Implications-bearing, shallow marine siliciclastic rocks in the Zimnie Gory section of the White Sea region indicates Ranges, South Australia (18); in the Poleta Formation in the White-Inyo Mountains and Upper Wood Canyon

299

A Parallelisation of Ray Tracing with Diffuse Interreflection Erik Reinhard  

E-Print Network (OSTI)

include a.i. architectural design, theatre and greenhouse lighting simulations and traffic lighting images of 3D scenes. However, the rendering of complex scenes under advanced lighting circumstances may scenes. It calculates the reflection of light in a scene by tracing the path of light backwards from

Reinhard, Erik

300

CACHING CHARACTERISTICS OF INTERNET AND INTRANET WEB PROXY TRACES  

E-Print Network (OSTI)

CACHING CHARACTERISTICS OF INTERNET AND INTRANET WEB PROXY TRACES Arthur Goldberg, Ilya Pevzner} This paper studies the caching characteristics of HTTP requests and responses that pass through production a large Internet Service Provider (ISP) and 2.0 million entries from an Intranet firewall are studied. We

Goldberg, Arthur P.

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

From transformation traces to transformation rules: Assisting Model Driven Engineering  

E-Print Network (OSTI)

From transformation traces to transformation rules: Assisting Model Driven Engineering approach. In this paper we are interested in semi-automatically gen- erating labelled graph (model) transformations conform to a particu- lar syntax (meta-model). Those transformations are basic operations in model driven

Paris-Sud XI, Université de

302

Container throughput estimation leveraging ship GPS traces and open data  

Science Journals Connector (OSTI)

Traditionally, the port container throughput, a crucial measurement of regional economic development, was manually collected by port authorities. This requires a large amount of human effort and often delays publication of this important figure. In this ... Keywords: AIS trace, container throughput estimation, open data

Longbiao Chen, Daqing Zhang, Gang Pan, Leye Wang, Xiaojuan Ma, Chao Chen, Shijian Li

2014-09-01T23:59:59.000Z

303

Elemental ABAREX -- a user's manual.  

SciTech Connect

ELEMENTAL ABAREX is an extended version of the spherical optical-statistical model code ABAREX, designed for the interpretation of neutron interactions with elemental targets consisting of up to ten isotopes. The contributions from each of the isotopes of the element are explicitly dealt with, and combined for comparison with the elemental observables. Calculations and statistical fitting of experimental data are considered. The code is written in FORTRAN-77 and arranged for use on the IBM-compatible personal computer (PC), but it should operate effectively on a number of other systems, particularly VAX/VMS and IBM work stations. Effort is taken to make the code user friendly. With this document a reasonably skilled individual should become fluent with the use of the code in a brief period of time.

Smith, A.B.

1999-05-26T23:59:59.000Z

304

The Platinum-Group Elements:  

Science Journals Connector (OSTI)

...higher Pt emissions have been measured for diesel catalysts (Moldovan et al. 2002...1031-1036 Johnson Matthey (2007) Market Data Tables. Online information www...platinum-group elements released from gasoline and diesel engine catalytic converters. Science...

Sebastien Rauch; Gregory M. Morrison

305

Canonical elements for collision orbits  

E-Print Network (OSTI)

I derive a set of canonical elements that are useful for collision orbits (perihelion distance approaching zero at fixed semimajor axis). The coordinates are the mean anomaly and the two spherical polar angles at aphelion.

Scott Tremaine

2000-12-12T23:59:59.000Z

306

Environmental research on actinide elements  

SciTech Connect

The papers synthesize the results of research sponsored by DOE's Office of Health and Environmental Research on the behavior of transuranic and actinide elements in the environment. Separate abstracts have been prepared for the 21 individual papers. (ACR)

Pinder, J.E. III; Alberts, J.J.; McLeod, K.W.; Schreckhise, R.G. (eds.)

1987-08-01T23:59:59.000Z

307

linear-elements-code.scm  

E-Print Network (OSTI)

(o Linear-finite-element-operator)) ;; initialize various fields that depend on the space ;; if coefficients is not defined, we set it to arrays of floating-point ;; zeros...

308

American Elements | Open Energy Information  

Open Energy Info (EERE)

Elements Place: Los Angeles, California Zip: 90024 Product: US-based manufacturer and supplier of PV feedstocks such as silicon, CIS, CIGS-based and Gallium-based materials....

309

PARTITIONING OF MAJOR, MINOR, AND TRACE ELEMENTS DURING SIMULATED IN SITU OIL SHALE RETORTING IN A CONTROLLED-STATE RETORT  

E-Print Network (OSTI)

retorted and wet with oil, and shale sections 18 through 24V. , 1979, Analysis of oil shale of products and effluents:In- Situ Retorting of Oil Shale in a Controlled- State

Fox, J. P.

2011-01-01T23:59:59.000Z

310

PARTITIONING OF MAJOR, MINOR, AND TRACE ELEMENTS DURING SIMULATED IN SITU OIL SHALE RETORTING IN A CONTROLLED-STATE RETORT  

E-Print Network (OSTI)

V. , 1979, Analysis of oil shale of products and effluents:In- Situ Retorting of Oil Shale in a Controlled- Stateactivation: Archaeometry, oil-shale analysis v. 11, p.

Fox, J. P.

2011-01-01T23:59:59.000Z

311

A paleoenvironmental reconstruction of Laguna Babcora, Chihuahua, Mexico based on ostracode paleoecology and trace element shell chemistry  

Science Journals Connector (OSTI)

Paleoecology of Laguna Babcora, Chihuahua, Mexico was reconstructed using ostracode faunal assemblages...

Manuel R. Palacios-Fest; Ana Luisa Carreo

2002-02-01T23:59:59.000Z

312

PARTITIONING OF MAJOR, MINOR, AND TRACE ELEMENTS DURING SIMULATED IN SITU OIL SHALE RETORTING IN A CONTROLLED-STATE RETORT  

E-Print Network (OSTI)

or by refin- ing and using shale Oil Mass balances and oil.shale retorting produces shale oil, mobility factors wereand retort operating shale, shale oil, retorting (LETC) con-

Fox, J. P.

2011-01-01T23:59:59.000Z

313

Prevention of trace and major element leaching from coal combustion products by hydrothermally-treated coal ash  

SciTech Connect

The most important structural components of coal ash obtained by coal combustion in 'Nikola Tesla A' power plant located near Belgrade (Serbia) are amorphous alumosilicate, alpha-quartz, and mullite. The phase composition of coal ash can be altered to obtain zeolite type NaA that crystallizes in a narrow crystallization field (SiO{sub 2}/Al{sub 2}O{sub 3}; Na{sub 2}O/SiO{sub 2}; H{sub 2}O/Na{sub 2}O ratios). Basic properties (crystallization degree, chemical composition, the energy of activation) of obtained zeolites were established. Coal ash extracts treated with obtained ion-exchange material showed that zeolites obtained from coal ash were able to reduce the amounts of iron, chromium, nickel, zinc, copper, lead, and manganese in ash extracts, thus proving its potential in preventing pollution from dump effluent waters.

Adnadjevic, B.; Popovic, A.; Mikasinovic, B. [University of Belgrade, Belgrade (Serbia). Dept. of Chemistry

2009-07-01T23:59:59.000Z

314

Telling friends from foes : strontium isotope and trace element analysis of companion burials from Pusilh, Toledo District, Belize.  

E-Print Network (OSTI)

??In Maya bioarchaeology, distinguishing the remains of revered ancestors from sacrificial victims often proves difficult due to the frequently poor bone preservation and the similarities (more)

Somerville, Andrew D.

2010-01-01T23:59:59.000Z

315

Telling friends from foes : strontium isotope and trace element analysis of companion burials from Pusilh, Toledo District, Belize  

E-Print Network (OSTI)

Local Variability in Strontium Isotope Ratios of Human ToothDifferential Diagenesis of Strontium in Archaeological HumanThe ratio of barium to strontium as a paleodietary indicator

Somerville, Andrew D.

2010-01-01T23:59:59.000Z

316

Coal fly ash basins as an attractive nuisance to birds: Parental provisioning exposes nestlings to harmful trace elements  

E-Print Network (OSTI)

Savannah River Ecology Laboratory, P.O. Drawer E, Aiken, SC 29803, USA a r t i c l e i n f o Article. Department of Energy's Savannah River Site (Hopkins et al., 1998, 2003; Nagle et al., 2001; Rowe et al., 1996; NRC, 2006, Rowe et al., 2002; Ruhl et al., 2009). These by-products can contain toxic levels

Hopkins, William A.

317

PARTITIONING OF MAJOR, MINOR, AND TRACE ELEMENTS DURING SIMULATED IN SITU OIL SHALE RETORTING IN A CONTROLLED-STATE RETORT  

E-Print Network (OSTI)

and Goda, L. Y. , atomic absorption spectrometry: Pergamonoil 1, p. 62. Zeeman atomic absorption, a new approach toranges studied Zeeman atomic absorption spectroscopy was

Fox, J. P.

2011-01-01T23:59:59.000Z

318

Trace element abundances in the Rock Canyon Anticline, Pueblo, Colorado, marine sedimentary section and their relationship to  

E-Print Network (OSTI)

also correspond with a positive excursion in carbon isotopic composition of seawater. Hydrothermal that intermittent hydrothermal activity on a massive scale triggered abrupt changes in carbon burial and deep ocean d13 C isotope excursion. The metal abundance anomalies indicate that intermittent hydrothermal

Bralower, Timothy J.

319

Practical and Regulatory Challenges in Controlling Trace Element Inputs to Soils from Land Application of Fluidized Bed Combustion Residues  

Science Journals Connector (OSTI)

The 165 MWe circulating fluidized bed boiler at the Nova Scotia Power Inc. ( ... largest fluidized bed unit. Fluidized bed combustion (FBC) allows the burning of high sulphur (...in situ capture of S (removal of ...

M. Hope-Simpson; W. Richards

2003-01-01T23:59:59.000Z

320

Trace element determination in seawater by ICP-SFMS coupled with a microflow nebulization/desolvation system  

Science Journals Connector (OSTI)

After sampling and storage, pre-treatment of the filtered samples was ... -4, filtered (0.45?m) coastal seawater certified reference material (acidified to pH1...32]), diluted with ultrapure water (1:10 v:v), w...

Clara Turetta; Giulio Cozzi; Carlo Barbante

2004-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Thermochemical and trace element behavior of coal gangue, agricultural biomass and their blends during co-combustion  

Science Journals Connector (OSTI)

Abstract The thermal decomposition behavior of coal gangue, peanut shell, wheat straw and their blends during combustion were determined via thermogravimetric analysis. The coal gangue/agricultural biomass blends were prepared in four weight ratios and oxidized under dynamic conditions from room temperature to 1000C by various heating rates. Kinetic models were carried out to evaluate the thermal reactivity. The overall mass balance was performed to assess the partition behavior of coal gangue, peanut shell and their blends during combustion in a fixed bed reactor. The decomposition processes of agricultural biomass included evaporation, release of volatile matter and combustion as well as char oxidation. The thermal reactivity of coal gangue could be improved through the addition of agricultural biomass in suitable proportion and subsequent appropriate heating rate during combustion. In combination with the heating value and base/acid ratio limitations, a blending ratio of 30% agricultural biomass is conservatively selected as optimum blending.

Chuncai Zhou; Guijian Liu; Siwei Cheng; Ting Fang; Paul Kwan Sing Lam

2014-01-01T23:59:59.000Z

322

Behavior study of trace elements in pulverized lignite, bottom ash, and fly ash of Amyntaio power station, Greece  

Science Journals Connector (OSTI)

Greece is second among EU countries for lignite coal production. The indicated reserves are 6.7 billion tonnes with a ... of Greece are generated through the utilization of lignite, while the remaining percentage...

Pavlos Megalovasilis; Georgios Papastergios

2013-07-01T23:59:59.000Z

323

Trace metal uptake and accumulation pathways in Kemp's ridley sea turtles (Lepidochelys kempii)  

E-Print Network (OSTI)

Little is known of trace metal concentrations and their possible role in the mortality of critically endangered Kemp??s ridley sea turtles (Lepidochelys kempii). Research described herein characterized concentrations of seven trace metals ?? Ag, Cd...

Wang, Hui-Chen

2005-08-29T23:59:59.000Z

324

Trace Reduction for Virtual Memory Simulations Scott F. Kaplan, Yannis Smaragdakis, and Paul R. Wilson  

E-Print Network (OSTI)

Trace Reduction for Virtual Memory Simulations Scott F. Kaplan, Yannis Smaragdakis, and Paul R reduction. Neither requires that the simulator be modi ed to accept the reduced trace. This research

Smaragdakis, Yannis

325

Determination of trace impurities in zircaloy-2 and tellurium by spark source mass spectrometry  

Science Journals Connector (OSTI)

Determination of trace impurities in zircaloy-2 and tellurium by Spark Source Mass Spectrometry (SSMS) is reported. The advantage of SSMS lies in the fact that along with metallic trace constituents even the n...

K. L. Ramakumar; V. A. Raman; V. L. Sant

1988-12-01T23:59:59.000Z

326

Emissions of trace gases and aerosols during the open combustion of biomass  

NLE Websites -- All DOE Office Websites (Extended Search)

Emissions of trace gases and aerosols during the open combustion of biomass Emissions of trace gases and aerosols during the open combustion of biomass in the laboratory Title Emissions of trace gases and aerosols during the open combustion of biomass in the laboratory Publication Type Journal Article Year of Publication 2009 Authors McMeeking, Gavin R., Sonia M. Kreidenweis, Stephen Baker, Christian M. Carrico, Judith C. Chow, Jeffrey Collett L. Jr., Wei Min Hao, Amanda S. Holden, Thomas W. Kirchstetter, William C. Malm, Hans Moosmuller, Amy P. Sullivan, and Cyle E. Wold Journal Journal of Geophysical Research Volume 114 Abstract We characterized the gas- and speciated aerosol-phase emissions from the open combustion of 33 different plant species during a series of 255 controlled laboratory burns during the Fire Laboratory at Missoula Experiments (FLAME). The plant species we tested were chosen to improve the existing database for U.S. domestic fuels: laboratory-based emission factors have not previously been reported for many commonly burned species that are frequently consumed by fires near populated regions and protected scenic areas. The plants we tested included the chaparral species chamise, manzanita, and ceanothus, and species common to the southeastern United States (common reed, hickory, kudzu, needlegrass rush, rhododendron, cord grass, sawgrass, titi, and wax myrtle). Fire-integrated emission factors for gas-phase CO2, CO, CH4, C2-4 hydrocarbons, NH3, SO2, NO, NO2, HNO3, and particle-phase organic carbon (OC), elemental carbon (EC), SO4 2, NO3, Cl, Na+, K+, and NH4 + generally varied with both fuel type and with the fire-integrated modified combustion efficiency (MCE), a measure of the relative importance of flaming- and smoldering-phase combustion to the total emissions during the burn. Chaparral fuels tended to emit less particulate OC per unit mass of dry fuel than did other fuel types, whereas southeastern species had some of the largest observed emission factors for total fine particulate matter. Our measurements spanned a larger range of MCE than prior studies, and thus help to improve estimates of the variation of emissions with combustion conditions for individual fuels.

327

THE NEW ELEMENT BERKELIUM (ATOMIC NUMBER 97)  

E-Print Network (OSTI)

of time from rare earth elements and from the actinidea group from the rare earth elements before using the columnpositions of some rare earth elements was obtained and these

Thompson, S.G.; Ghiorso, A.; Seaborg, G.T.

2008-01-01T23:59:59.000Z

328

An Attack on a TraceZero Cryptosystem Claus Diem and Jasper Scholten  

E-Print Network (OSTI)

An Attack on a Trace­Zero Cryptosystem Claus Diem and Jasper Scholten Institut f?ur Experimentelle

Diem, Claus

329

Reactive Uptake of Trace Metals in the Hyporheic Zone of a  

E-Print Network (OSTI)

that Mn oxides in the hyporheic zone enhance trace metal uptake. Reach-scale mass-balance calculations

330

The role of trace gas flux networks in biogeosciences  

SciTech Connect

Vast networks of meteorological sensors ring the globe, providing continuous measurements of an array of atmospheric state variables such as temperature, humidity, rainfall, and the concentration of carbon dioxide [New etal., 1999; Tans etal., 1996]. These measurements provide input to weather and climate models and are key to detecting trends in climate, greenhouse gases, and air pollution. Yet to understand how and why these atmospheric state variables vary in time and space, biogeoscientists need to know where, when, and at what rates important gases are flowing between the land and the atmosphere. Tracking trace gas fluxes provides information on plant or microbial metabolism and climate-ecosystem interactions. The existence of trace gas flux networks is a relatively new phenomenon, dating back to research in 1984. The first gas flux measurement networks were regional in scope and were designed to track pollutant gases such as sulfur dioxide, ozone, nitric acid, and nitrogen dioxide. Atmospheric observations and model simulations were used to infer the depositional rates of these hazardous chemicals [Fowler etal., 2009; Meyers etal., 1991]. In the late 1990s, two additional trace gas flux measurement networks emerged. One, the United States Trace Gas Network (TRAGNET), was a short-lived effort that measured trace gas emissions from the soil and plants with chambers distributed throughout the country [Ojima etal., 2000]. The other, FLUXNET, was an international endeavor that brought many regional networks together to measure the fluxes of carbon dioxide, water vapor, and sensible heat exchange with the eddy covariance technique [Baldocchi etal., 2001]. FLUXNET, which remains active today, currently includes more than 400 tower sites, dispersed across most of the world's climatic zones and biomes, with sites in North and South America, Europe, Asia, Africa, and Australia. More recently, several specialized networks have emerged, including networks dedicated to urban areas (Urban Fluxnet), nitrogen compounds in Europe (NitroEurope), and methane (MethaneNet). Technical Aspects of Flux Networks Eddy covariance flux measurements are the preferred method by which biogeoscientists measure trace gas exchange between ecosystems and the atmosphere [Baldocchi, 2003].

Baldocch, Dennis [Department of Environmental Science, Policy and Management, University of California, Berkeley,; Reichstein, Markus [Max Planck Institute for Biogeochemistry; Papale, D. [University of Tuscia; KOTEEN, LAURIE [University of California, Berkeley; VARGAS, RODRIGO [Ensenada Center for Scientific Research and Higher Education (CICESE); Agarwal, D.A [Lawrence Berkeley National Laboratory (LBNL); Cook, Robert B [ORNL

2012-01-01T23:59:59.000Z

331

LES BIG DATA ET LA RELATION CLIENT Quand les traces numriques organisent l'change marchand  

E-Print Network (OSTI)

LES BIG DATA ET LA RELATION CLIENT Quand les traces numériques organisent l'échange marchand Auteur traces numériques organisent l'échange marchand Résumé : Avec le mouvement de digitalisation du commerce marchands font des comportements des consommateurs. Ces traces numériques doivent donc permettre aux

Paris-Sud XI, Université de

332

CAN THE GEOCHEMICAL TOPSOIL ATLAS BE USED TO PREDICT TRACE METAL DEFICIENCY IN CATTLE?  

E-Print Network (OSTI)

CAN THE GEOCHEMICAL TOPSOIL ATLAS BE USED TO PREDICT TRACE METAL DEFICIENCY IN CATTLE? By: Emily courtesy LTSN Bioscience. http://bio.ltsn.ac.uk/imagebank/ Just as trace metals are important to humans to the structural stability of molecules and membranes. For these reasons, incorrect trace metal levels can

Nottingham, University of

333

Desorption Electrospray Ionization Mass Spectrometry for Trace Analysis of Agrochemicals in Food  

Science Journals Connector (OSTI)

Desorption Electrospray Ionization Mass Spectrometry for Trace Analysis of Agrochemicals in Food ... Desorption electrospray ionization (DESI) is applied to the rapid, in situ, direct qualitative and quantitative (ultra)trace analysis of agrochemicals in foodstuffs. ... The results proved that DESI allows the detection and confirmation of traces of agrochemicals in actual market-purchased samples. ...

Juan F. Garca-Reyes; Ayanna U. Jackson; Antonio Molina-Daz; R. Graham Cooks

2008-12-17T23:59:59.000Z

334

A few new (?) facts about infinite elements  

E-Print Network (OSTI)

Keywords: Helmholtz equation; Infinite element; hp finite elements; Echo Area. 1. .... g : ? ouinc on . ?2.1?. The Sommerfeld radiation condition represents a...

2006-04-24T23:59:59.000Z

335

Element Labs Inc | Open Energy Information  

Open Energy Info (EERE)

Inc. Place: Santa Clara, California Zip: 95054 Product: Element Labs is a developer of LED video technology for entertainment, architectural, and signage. References: Element...

336

Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters-  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Details Activities (3) Areas (1) Regions (0) Abstract: A major campaign to quantify the magmatic carbon discharge in cold groundwaters around Mammoth Mountain volcano in eastern California was carried out from 1996 to 1999. The total water flow from all sampled cold springs was >=1.8_107 m3/yr draining an area that receives an estimated

337

Fault simulation of combinational circuits based on critical path tracing  

E-Print Network (OSTI)

FAULT SIMULATION Ol' COMBINATIONAI, CIRCUITS BASED ON CRITICAL PATH TRACING A Thesis by CHARLES JAMES BURNETT Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1992 Major Subject: Electrical Engineering FAULT SIIUIULATION OF COMBINATlONAL CIRCUITS BASED ON CRITICAL PATH TRACINC A Thesis CHARLES JAMES BURNETT Approved as to style and content by: Don E. Ross (Chair of Committee...

Burnett, Charles James

1992-01-01T23:59:59.000Z

338

The role of organic carbon, iron, and aluminium oxyhydroxides as trace metal carriers: Comparison between the Trinity River and the Trinity River Estuary (Galveston Bay, Texas)  

Science Journals Connector (OSTI)

Concentrations of many trace elements in aquatic systems can become enriched due to anthropogenic as well as natural processes. In order to investigate particle enrichment processes from the river through an estuary, the changes in solid phase speciation and particlewater partitioning of a number of trace metals (e.g., Fe, Pb, Cd, Cu, Ni, Zn, Co, V) were evaluated from the Trinity River through Galveston Bay to the Ocean. An established way to detect anthropogenic contamination is by normalization of contaminant concentrations to Fe, Al, and/or organic carbon (OC). Particulate metal (Mn, Co, Ni, Cu, Pb, V, Ni, Zn, Cd) to Fe, Al, and metal to OC ratios were determined in waters of the Trinity River and Galveston Bay, in order to test 1) if the system is contaminated, and 2) whether Fe, Al, or organic carbon act as a master variable for determining metal concentrations. All particulate trace metals from Trinity River were present in ratios to Fe or Al similar to those from drainage basin soils, which were similar to world world-average soil. As expected, concentrations of Fe, Al and OC in particles from both the Trinity River as well as Galveston Bay were strongly correlated, from which one might conclude that Fe can be used as a reference element that is representative for all three of them. However, ratios to Fe of particle-reactive elements, such as Pb, were found to be significantly and positively correlated to the Fe content of particles from Galveston Bay, while nutrient-type elements, such as Cu, Ni, and Cd, were negatively correlated to their Fe content. Interestingly, suspended particles from the Trinity River did not exhibit any such correlations at all and only varied within a very limited range. The reason for such distinctive correlative behavior that distinguishes riverine from estuarine particles is likely caused by internal cycling of these elements within Galveston Bay, and their relationship to OC. Relationships of trace metals to OC revealed that differences in sources and cycling of OC in the estuary significantly altered the soil imprinted particle make-up. Results from selective leaching experiments of suspended particles in Galveston Bay confirmed the selective enrichment and fractionation processes for the different metals.

Liang-Saw Wen; Kent W. Warnken; Peter H. Santschi

2008-01-01T23:59:59.000Z

339

Three-dimensional seismic tomography with tetrahedra element on isoparametric mapping  

Science Journals Connector (OSTI)

The author has developed a method of three-dimensional seismic tomography on concrete structures. This method is based on ray-trace and identification technique, and the distribution of slowness or energy dissipation is identified based on simultaneously iterative reconstruction technique (SIRT) or the other kind of statistical identification technique. This kind of technique was originally developed for investigation of underground that is called geotomography, however, this technique was difficult to apply to concrete structures because the structures generally have irregular shape. A hexahedral element was implemented by the author to overcome this difficulty based on the idea of isoparametric mapping of hexahedral element on finite element analysis, however, it is still difficult to apply the method to the structures that have highly irregular shape. In this respect, an implementation of tetrahedral element is proposed for the three-dimensional seismic tomography on concrete structures to solve the difficulty in this paper. This implementation is based on the idea of isoparametric mapping as well as the case of hexahedral element and it enables to apply the method to structures of complex shape that is insufficient to represent by hexahedral elements. The validity of the proposed method is checked by some numerical example.

Yoshikazu Kobayashi

2012-01-01T23:59:59.000Z

340

Superheavy Elements - Achievements and Challenges  

SciTech Connect

The search for superheavy elements (SHE) has yielded exciting results for both the 'cold fusion' approach with reactions employing Pb and Bi targets and the ''hot fusion'' reactions with {sup 48}Ca beams on actinide targets. The most recent activities at GSI were the successful production of a more neutron rich isotope of element 112 in the reaction {sup 48}Ca+{sup 238}U confirming earlier result from FLNR, and the attempt to synthesize an isotope with Z 120 in the reaction {sup 64}Ni+{sup 238}U. Apart from the synthesis of new elements, advanced nuclear structure studies for heavy and super heavy elements promise a detailed insight in the properties of nuclear matter under the extreme conditions of high Z and A. The means are evaporation residue(ER)-{alpha}-{alpha} and -{alpha}-{gamma} coincidence techniques applied after separation of the reaction products from the beam. Recent examples of interesting physics to be discovered in this region of the chart of nuclides are the investigation of K-isomers observed for {sup 252,254}No and indicated for {sup 270}Ds. Fast chemistry and precision mass measurements deliver in addition valuable information on the fundamental properties of the SHE.

Ackermann, Dieter [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstr. 1, D-64291 Darmstadt (Germany)

2009-03-04T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Single element laser beam shaper  

DOE Patents (OSTI)

A single lens laser beam shaper for converting laser beams from any spatial profile to a flat-top or uniform spatial profile. The laser beam shaper includes a lens having two aspheric surfaces. The beam shaper significantly simplifies the overall structure in comparison with conventional 2-element systems and therefore provides great ease in alignment and reduction of cost.

Zhang, Shukui (Yorktown, VA); Michelle D. Shinn (Newport News, VA)

2005-09-13T23:59:59.000Z

342

Eric Heinicke Energy Elements LLC  

E-Print Network (OSTI)

and East CTA Snapshots; Cost Effective Energy Saving Measures And Supplemental Issues Benchmarking and FineEric Heinicke Energy Elements LLC 702-683-5067 eric@energyelements.net NW CTA, Burkholder MS Tuning High Performance HYBRID GX Systems Cary Smith Sound Geothermal Corporation 801-942-6100 dcsmith

343

The Transuranium Elements - Present Status: Nobel Lecture  

DOE R&D Accomplishments (OSTI)

The discovery of the transuranium elements and the work done on them up to the present time are reviewed. The properties of these elements, their relationship to other elements, their place in the periodic table, and the possibility of production and identification of other transuranium elements are discussed briefly.

Seaborg, G. T.

1951-12-12T23:59:59.000Z

344

Spatial distribution of elements in the spheroids by prostate tumor cells using synchrotron radiation x-ray fluorescence  

SciTech Connect

The formation of three-dimensional cell microspheres such as spheroids has attracted attention as a useful culture technique. In this study, we investigated the trace elemental distribution (mapping) in spheroids derived from tissue prostate cancer (PCa). The measurements were performed in standard geometry of 45 deg. incidence, exciting with a white beam and using an optical capillary with 20 {mu}m diameter collimation in the XRF beam line at the Synchrotron Light National Laboratory (Campinas, Brazil). The results showed that most elements analyzed presented non-uniform distribution. P, S and Cl showed similar elemental distribution in all the samples analyzed. K, Ca, Fe, and Cu showed different elemental distribution for the spheroids analyzed. Zinc presented more intense distributions in the spheroid central region for all spheroids analyzed.

Leitao, Roberta G.; Santos, Carlos Antonio N.; Junior, Antonio Palumbo; Souza, Pedro A. V. R.; Canellas, Catarine G. L.; Anjos, Marcelino J.; Nasciutti, Luiz E.; Lopes, Ricardo T. [Laboratorio de Instrumentacao Nuclear, PEN/COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundao, 21941-972, Rio de Janeiro, RJ (Brazil); Laboratorio de Biotecnologia - Bioengenharia - DIPRO, Instituto Nacional de Metrologia, Normalizacao e Qualidade Industrial, Xerem. 25250-020, Duque de Caxias, RJ (Brazil); Laboratorio de Interacoes Celulares, ICB-CCS, Universidade Federal do Rio de Janeiro, Ilha do Fundao, 21941- 590, Rio de Janeiro, RJ (Brazil); Laboratorio de Instrumentacao Nuclear, PEN/COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundao, 21941-972, Rio de Janeiro, RJ (Brazil); Laboratorio de Interacoes Celulares, ICB-CCS, Universidade Federal do Rio de Janeiro, Ilha do Fundao, 21941- 590, Rio de Janeiro, RJ (Brazil); Laboratorio de Instrumentacao Nuclear, PEN/COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundao, 21941-972, Rio de Janeiro, RJ (Brazil)

2012-05-17T23:59:59.000Z

345

Property:GRR/Elements | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:GRR/Elements Jump to: navigation, search Property Name GRR/Elements Property Type Page Description List of elements included in this section. The value of this property is derived automatically by the portion of the element template that controls the content displayed when elements are embedded in sections. Pages using the property "GRR/Elements" Showing 25 pages using this property. (previous 25) (next 25) G GRR/Elements/ + GRR/Elements/1a.21 to 1a.22 - Proposed Land Use Plan (New Plan) or Final Environmental Impact Statement (Revision) + GRR/Elements/12-FD-a.10 - Written Concurrence with the "No Effect" and/or "No Likely Adverse Effects" Determination + GRR/Elements/12-FD-a.10 - Written Concurrence with the "No Effect" and/or "No Likely Adverse Effects" Determination +

346

Element Labs | Open Energy Information  

Open Energy Info (EERE)

Element Labs Element Labs Address 3350 Scott Blvd Place Santa Clara, California Zip 95054 Sector Efficiency Product LED Producer Website http://www.elementlabs.com/ Coordinates 37.380364°, -121.9823779° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.380364,"lon":-121.9823779,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

347

Element Power | Open Energy Information  

Open Energy Info (EERE)

Power Power Jump to: navigation, search Logo: Element Power Name Element Power Address 421 SW Sixth Avenue, Suite 1000 Place Portland, Oregon Zip 97204 Sector Wind energy Product uility-scale solar and wind projects Website http://www.elpower.com/ Coordinates 45.520812°, -122.67791° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.520812,"lon":-122.67791,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

348

Composite oxygen ion transport element  

SciTech Connect

A composite oxygen ion transport element that has a layered structure formed by a dense layer to transport oxygen ions and electrons and a porous support layer to provide mechanical support. The dense layer can be formed of a mixture of a mixed conductor, an ionic conductor, and a metal. The porous support layer can be fabricated from an oxide dispersion strengthened metal, a metal-reinforced intermetallic alloy, a boron-doped Mo.sub.5Si.sub.3-based intermetallic alloy or combinations thereof. The support layer can be provided with a network of non-interconnected pores and each of said pores communicates between opposite surfaces of said support layer. Such a support layer can be advantageously employed to reduce diffusion resistance in any type of element, including those using a different material makeup than that outlined above.

Chen, Jack C. (Getzville, NY); Besecker, Charles J. (Batavia, IL); Chen, Hancun (Williamsville, NY); Robinson, Earil T. (Mentor, OH)

2007-06-12T23:59:59.000Z

349

Self supporting heat transfer element  

DOE Patents (OSTI)

The present invention provides an improved internal heat exchange element arranged so as to traverse the inside diameter of a container vessel such that it makes good mechanical contact with the interior wall of that vessel. The mechanical element is fabricated from a material having a coefficient of thermal conductivity above about 0.8 W cm.sup.-1.degree. K.sup.-1 and is designed to function as a simple spring member when that member has been cooled to reduce its diameter to just below that of a cylindrical container or vessel into which it is placed and then allowed to warm to room temperature. A particularly important application of this invention is directed to a providing a simple compartmented storage container for accommodating a hydrogen absorbing alloy.

Story, Grosvenor Cook (Livermore, CA); Baldonado, Ray Orico (Livermore, CA)

2002-01-01T23:59:59.000Z

350

Photoconductive circuit element pulse generator  

DOE Patents (OSTI)

A pulse generator for characterizing semiconductor devices at millimeter wavelength frequencies where a photoconductive circuit element (PCE) is biased by a direct current voltage source and produces short electrical pulses when excited into conductance by short laser light pulses. The electrical pulses are electronically conditioned to improve the frequency related amplitude characteristics of the pulses which thereafter propagate along a transmission line to a device under test.

Rauscher, Christen (Alexandria, VA)

1989-01-01T23:59:59.000Z

351

Neutrino induced light element synthesis  

SciTech Connect

As the core of a massive star collapses to form a neutron star, the flux of neutrinos in the overlying shells of heavy elements becomes so great that, despite the small cross section, substantial nuclear transmutation is induced. Neutrinos, especially the higher energy {mu}- and {tau}-neutrinos, excite heavy elements and even helium to particle unbound levels. The evaporation of a single neutron or proton, and the back reaction of these nucleons on other species present, significantly alters the outcome of traditional nucleosynthesis calculations leading to a new process: {nu}-nucleosynthesis. The process was first studied by Domogatsky et al. and Woosley. Recent work by Epstein, Colgate, and Haxton and Woosley and Haxton suggested that a large number of elements could owe their existence in nature to {nu}-induced reactions in supernovae. A parametrized study of this process including shock wave propagation was carried out by Woosley et al. for selected zones of a 20 M{sub {circle dot}} star. Here we give preliminary results for a 25 M{sub {circle dot}} star, including all {nu}-reactions in all stellar zones.

Hartmann, D.H.; Mathews, G.; Weaver, T.A. (Lawrence Livermore National Lab., CA (USA)); Haxton, W.C. (Washington Univ., Seattle, WA (USA). Dept. of Physics); Woosley, S.E. (Lawrence Livermore National Lab., CA (USA) California Univ., Santa Cruz, CA (USA). Board of Studies in Astronomy and Astrophysics)

1990-01-01T23:59:59.000Z

352

The New Element Americium (Atomic Number 95)  

DOE R&D Accomplishments (OSTI)

Several isotopes of the new element 95 have been produced and their radiations characterized. The chemical properties of this tripositive element are similar to those of the typical tripositive lanthanide rare-earth elements. Element 95 is different from the latter in the degree and rate of formation of certain compounds of the complex ion type, which makes possible the separation of element 95 from the lanthanide rare-earths. The name americium (after the Americas) and the symbol Am are suggested for the element on the basis of its position as the sixth member of the actinide rare-earth series, analogous to europium, Eu, of the lanthanide series.

Seaborg, G.T.; James, R.A.; Morgan, L.O.

1948-01-00T23:59:59.000Z

353

Variance in trace constituents following the final stratospheric warming  

SciTech Connect

Temporal variances in the concentration of trace species are examined within the northern hemisphere stratosphere following the final warming. Variances are computed utilizing an annual cycle run of a tracer transport model and stratospheric balloon observations. The model uses winds generated with a general circulation model to transport N{sub 2}O. Regions of significant N{sub 2}O variance are produced immediately following the modeled final warming as zonally inhomogeneous N{sub 2}O anomalies are created during the warming, then advected passively about the pole by easterly winds. Diffusion rapidly dissipates these anomalies and decreases the associated stratospheric tracer variance to very low levels by June. On monthly timescales the 10 day normal mode explains up to 50% of the modeled variance of N{sub 2}O during summer. On these timescales potential temperature exhibits less variability than N{sub 2}O, as horizontal parcel displacements are relatively ineffective at inducing potential temperature variability. An examination of balloon observations of N{sub 2}O and other long lived trace species, between 40{degree} and 50{degree}N, indicates that the primary component of the tracer variance during June is on an interannual time scale. The authors attribute this interannual variability to stratospheric variability during the winter and early spring months imprinted onto the distributions of long lived tracers. Potential temperatures does not exhibit much interannual variability because it does not retain a memory of the previous winters circulation.

Hess, P. (Univ. of Washington, Seattle (USA))

1990-08-20T23:59:59.000Z

354

Ray-tracing for complex astrophysical high-opacity structures  

E-Print Network (OSTI)

We present a ray-tracing technique for radiative transfer modeling of complex three-dimensional (3D) structures which include dense regions of high optical depth like in dense molecular clouds, circumstellar disks, envelopes of evolved stars, and dust tori around active galactic nuclei. The corresponding continuum radiative transfer problem is described and the numerical requirements for inverse 3D density and temperature modeling are defined. We introduce a relative intensity and transform the radiative transfer equation along the rays to solve machine precision problems and to relax strong gradients in the source term. For the optically thick regions where common ray-tracers are forced to perform small trace steps, we give two criteria for making use of a simple approximative solver crossing the optically thick region quickly. Using an example of a density structure with optical depth changes of 6 orders of magnitude and sharp temperature variations, we demonstrate the accuracy of the proposed scheme using a common 5th-order Runge-Kutta ray-tracer with adaptive step size control. In our test case, the gain in computational speed is about a factor of 870. The method is applied to calculate the temperature distribution within a massive molecular cloud core for different boundary conditions for the radiation field.

J. Steinacker; A. Bacmann; Th. Henning

2006-03-17T23:59:59.000Z

355

Tracing the behavior of parallel applications on extreme-scale systems |  

NLE Websites -- All DOE Office Websites (Extended Search)

Tracing the behavior of parallel applications on extreme-scale systems Tracing the behavior of parallel applications on extreme-scale systems January 3, 2014 Tweet EmailPrint Event-tracing tools have proved vital for understanding how parallel applications behave. But new challenges make the use of event tracing on extreme-scale machines problematic. Tracing tools generate large amounts of data, which can overload the parallel file system and skew the application being studied. To remedy this problem, researchers from Argonne National Laboratory, the Technische Universität Dresden in Germany, and Oak Ridge National Laboratory have devised a new technique that enables event tracing on exascale systems. Scientists who have been using existing performance analysis tools find that these frequently do not scale to large systems. And even if they do

356

Distributions of 14 elements on 60 selected absorbers from two simulant solutions (acid-dissolved sludge and alkaline supernate) for Hanford HLW Tank 102-SY  

SciTech Connect

Sixty commercially available or experimental absorber materials were evaluated for partitioning high-level radioactive waste. These absorbers included cation and anion exchange resins, inorganic exchangers, composite absorbers, and a series of liquid extractants sorbed on porous support-beads. The distributions of 14 elements onto each absorber were measured from simulated solutions that represent acid-dissolved sludge and alkaline supernate solutions from Hanford high-level waste (HLW) Tank 102-SY. The selected elements, which represent fission products (Ce, Cs, Sr, Tc, and Y); actinides (U, Pu, and Am); and matrix elements (Cr, Co, Fe, Mn, Zn, and Zr), were traced by radionuclides and assayed by gamma spectrometry. Distribution coefficients for each of the 1680 element/absorber/solution combinations were measured for dynamic contact periods of 30 min, 2 h, and 6 h to provide sorption kinetics information for the specified elements from these complex media. More than 5000 measured distribution coefficients are tabulated.

Marsh, S.F.; Svitra, Z.V.; Bowen, S.M.

1993-10-01T23:59:59.000Z

357

Numerical Simulation of Detonation Initiation by the Space-Time Conservation Element and Solution Element Method.  

E-Print Network (OSTI)

??This dissertation is focused on the numerical simulation of the detonation initiation process. The space-time Conservation Element and Solution Element (CESE) method, a novel numerical (more)

Wang, Bao

2010-01-01T23:59:59.000Z

358

Three dimensional finite element methods: Their role in the design of DC accelerator systems  

SciTech Connect

High Voltage Engineering has designed, built and tested a 2 MV dual irradiation system that will be applied for radiation damage studies and ion beam material modification. The system consists of two independent accelerators which support simultaneous proton and electron irradiation (energy range 100 keV - 2 MeV) of target sizes of up to 300 Multiplication-Sign 300 mm{sup 2}. Three dimensional finite element methods were used in the design of various parts of the system. The electrostatic solver was used to quantify essential parameters of the solid-state power supply generating the DC high voltage. The magnetostatic solver and ray tracing were used to optimize the electron/ion beam transport. Close agreement between design and measurements of the accelerator characteristics as well as beam performance indicate the usefulness of three dimensional finite element methods during accelerator system design.

Podaru, Nicolae C.; Gottdang, A.; Mous, D. J. W. [High Voltage Engineering Europa B.V., P.O. Box 99, 3800 AB, Amersfoort (Netherlands)

2013-04-19T23:59:59.000Z

359

Essential Grid Workflow Monitoring Elements  

SciTech Connect

Troubleshooting Grid workflows is difficult. A typicalworkflow involves a large number of components networks, middleware,hosts, etc. that can fail. Even when monitoring data from all thesecomponents is accessible, it is hard to tell whether failures andanomalies in these components are related toa given workflow. For theGrid to be truly usable, much of this uncertainty must be elim- inated.We propose two new Grid monitoring elements, Grid workflow identifiersand consistent component lifecycle events, that will make Gridtroubleshooting easier, and thus make Grids more usable, by simplifyingthe correlation of Grid monitoring data with a particular Gridworkflow.

Gunter, Daniel K.; Jackson, Keith R.; Konerding, David E.; Lee,Jason R.; Tierney, Brian L.

2005-07-01T23:59:59.000Z

360

Questions and Answers - Who discovered the elements?  

NLE Websites -- All DOE Office Websites (Extended Search)

Will scientists everfind smaller elements? Will scientists ever<br>find smaller elements? Previous Question (Will scientists ever find smaller elements?) Questions and Answers Main Index Next Question (What are boiling and melting points?) What are boiling and melting points? Who discovered the element gold, silver, copper, neon, etc...? Below is a list of all of the known elements, who they were discovered by and the year they were discovered. Some elements, such as gold, silver and iron, have been known since ancient times, so it is impossible to credit a single person for their discovery. Other elements were discovered around the same time by two or more scientists who were working independently of each other. In these cases, each scientist is listed along with the year they made their discovery. Other elements were discovered by teams of

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

RECENT WORK WITH THE TRANSURANIUM ELEMENTS  

Science Journals Connector (OSTI)

...WITH THE TRANSURANIUM ELEMENTS Glenn T. Seaborg LAWRENCE RADIATION LABORATORY...45, 1959 PHYSICS: G. T. SEABORG 471 RECENT WORK WITH THE TRANS URANIUL'3 ELEMENTS BY GLENN T. SEABORG LAWRENCE RADIATION LABORATORY...

Glenn T. Seaborg

1959-01-01T23:59:59.000Z

362

Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen, and Ingo Wald  

E-Print Network (OSTI)

Scientific Computing and Imaging Institute University of Utah Salt Lake City, Utah 84112 Email: {knolla1 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen, and Ingo Wald

Wald, Ingo

363

Computer analysis of holographic systems by means of vector ray tracing  

Science Journals Connector (OSTI)

This paper describes a computer program based on Welford's vector analysis approach capable of ray tracing through hybrid optical systems containing both conventional and diffractive...

Holloway, H W; Ferrante, R A

1981-01-01T23:59:59.000Z

364

TRACING THE CONTAMINANT HISTORY OF AN URBAN WATERSHED THROUGH AN EXAMINATION OF AQUATIC  

E-Print Network (OSTI)

TRACING THE CONTAMINANT HISTORY OF AN URBAN WATERSHED THROUGH AN EXAMINATION OF AQUATIC SEDIMENTS. A smaller organic contaminant database indicates sediment PAH levels exceed probable effect level criteria

365

E-Print Network 3.0 - atmospheric trace metals Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Sciences and Ecology 2 Chapter 1: Modelling Past Environmental Changes Using Lake Sediment Records Summary: of the anthropogenic fluxes of many potentially toxic trace metals...

366

Sediment water exchange of trace metals and nutrients in Galveston Bay, Texas.  

E-Print Network (OSTI)

??The benthic fluxes of several trace metals and nutrients were determined for three stations along the salinity gradient in the Trinity Bay region of Galveston (more)

Warnken, Kent Wayne

2012-01-01T23:59:59.000Z

367

Speciation of trace metals in seawater by anodic stripping voltammetry: Critical analytical steps  

Science Journals Connector (OSTI)

The speciation of trace metals in seawater based on the voltammetric (DPASV) titration ... to sample contaminations during sampling, filtration and storage, displacement of complexing equilibria in freeze storage

G. Capodaglio; G. Scarponi; G. Toscano

368

Die Elemente der 13. Gruppe: die Borgruppe  

Science Journals Connector (OSTI)

Die 13. Gruppe enthlt die Elemente: Bor (B), Aluminium (Al), Gallium (Ga), Indium (In) und Thallium (Tl).

Prof. Dr. Waldemar Ternes

2013-01-01T23:59:59.000Z

369

Climbing elements in finite coxeter groups  

E-Print Network (OSTI)

We define the notion of a climbing element in a finite real reflection group relative to a total order on the reflection set and we characterise these elements in the case where the total order arises from a bipartite Coxeter element.

Brady, Thomas; Watt, And Colum

2010-01-01T23:59:59.000Z

370

Fuel elements of thermionic converters  

SciTech Connect

Work on thermionic nuclear power systems has been performed in Russia within the framework of the TOPAZ reactor program since the early 1960s. In the TOPAZ in-core thermionic convertor reactor design, the fuel element`s cladding is also the thermionic convertor`s emitter. Deformation of the emitter can lead to short-circuiting and is the primary cause of premature TRC failure. Such deformation can be the result of fuel swelling, thermocycling, or increased unilateral pressure on the emitter due to the release of gaseous fission products. Much of the work on TRCs has concentrated on preventing or mitigating emitter deformation by improving the following materials and structures: nuclear fuel; emitter materials; electrical insulators; moderator and reflector materials; and gas-exhaust device. In addition, considerable effort has been directed toward the development of experimental techniques that accurately mimic operational conditions and toward the creation of analytical and numerical models that allow operational conditions and behavior to be predicted without the expense and time demands of in-pile tests. New and modified materials and structures for the cores of thermionic NPSs and new fabrication processes for the materials have ensured the possibility of creating thermionic NPSs for a wide range of powers, from tens to several hundreds of kilowatts, with life spans of 5 to 10 years.

Hunter, R.L. [ed.] [Sandia National Labs., Albuquerque, NM (United States). Environmental Systems Assessment Dept.; Gontar, A.S.; Nelidov, M.V.; Nikolaev, Yu.V.; Schulepov, L.N. [RI SIA Lutch, Podolsk (Russian Federation)

1997-01-01T23:59:59.000Z

371

Characterization of electrodeposited elemental boron  

SciTech Connect

Elemental boron was produced through electrowinning from potassium fluoroborate dissolved in a mixture of molten potassium fluoride and potassium chloride. The characteristics of the electrodeposited boron (raw boron) as well as the water and acid-leached product (processed boron) were studied. The chemical purity, specific surface area, size distribution of particles and X-ray crystallite size of the boron powders were investigated. The morphology of the deposits was examined using scanning electron microscopy (SEM). The chemical state of the matrix, as well as the impurity phases present in them, was established using X-ray photoelectron spectroscopy (XPS). In order to interpret and understand the results obtained, a thermodynamic analysis was carried out. The gas-phase corrosion in the head space as well as the chemistry behind the leaching process were interpreted using this analysis. The ease of oxidation of these powders in air was investigated using differential thermal analysis (DTA) coupled with thermogravimetry (TG). From the results obtained in this study it was established that elemental boron powder with a purity of 95-99% could be produced using a high temperature molten salt electrowinning process. The major impurities were found to be oxygen, carbon, iron and nickel.

Jain, Ashish [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 (India); Anthonysamy, S. [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 (India)], E-mail: sas@igcar.gov.in; Ananthasivan, K.; Ranganathan, R. [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 (India); Mittal, Vinit; Narasimhan, S.V. [Water and Steam Chemistry Division, BARC (F), Kalpakkam, 603102 (India); Vasudeva Rao, P.R. [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 (India)

2008-07-15T23:59:59.000Z

372

Trace gases, CO2, climate, and the greenhouse effect  

Science Journals Connector (OSTI)

Weather is driven by the suns energy input and the difference between insolation per unit area of the poles and the equator. The energy flux of the Earth is in long?term balanceas much is radiated away by the Earth as is absorbed or the mean temperature would have to increase or decrease steadily (and of course this is not observed). CO2 and other trace gases can cause the Earths mean temperature to rise through the Greenhouse Effect. The mean temperature in the Little Ice Age was only 1?C cooler but large effects were felt especially toward the poles. The CO2 which stays in the atmosphere will raise Earths mean temperature with effects which are relatively certain: a lot of warming at the poles and a very small amount of warming at the equator.

Gordon J. Aubrecht II

1988-01-01T23:59:59.000Z

373

Development of a trace explosives detection portal for personnel screening  

SciTech Connect

The authors discuss the development, design, and operation of a walk-through trace detection portal designed to screen personnel for explosives. Developed at Sandia National Laboratories (SNL) with primary funding from the Federal Aviation Administration (FAA) and additional support from the Department of Energy office of Safeguards and Security, this portal is intended primarily for use in airport terminals and in other localities where a very high throughput of pedestrian traffic is combined with stringent security requirements. The portal is capable of detecting both vapor and particulate contamination, with the collection of explosive material being based upon the entrainment of that material in air flows over the body of the person being screened. This portal is capable of detecting most types of common high explosives of interest to the FAA. The authors discuss the results of field testing of the portal in the Albuquerque International Airport in September, 1997 and more recent steps towards commercialization of the portal.

Parmeter, J.E.; Linker, K.L.; Rhykerd, C.L. Jr.; Bouchier, F.A.; Hannum, D.W.

1998-08-01T23:59:59.000Z

374

Tracing of Error in a Time Series Data  

E-Print Network (OSTI)

A physical (e.g. astrophysical, geophysical, meteorological etc.) data may appear as an output of an experiment or it may contain some sociological, economic or biological information. Whatever be the source of a time series data some amount of noise is always expected to be embedded in it. Analysis of such data in presence of noise may often fail to give accurate information. Although text book data filtering theory is primarily concerned with the presences of random, zero mean errors; but in reality, errors in data are often systematic rather than random. In the present paper we produce different models of systematic error in the time series data. This will certainly help to trace the systematic error present in the data and consequently that can be removed as possible to make the data compatible for further study.

Koushik Ghosh; Probhas Raychaudhuri

2007-01-30T23:59:59.000Z

375

Trace, isotopic analysis of micron-sized grains -- Mo, Zr analysis of stardust (SiC and graphite grains).  

SciTech Connect

Secondary Neutral Mass Spectrometry using resonant laser ionization can provide for both high useful yields and high discrimination while maintaining high lateral and depth resolutions. An example of the power of the method is measurement of the isotopic composition of Mo and Zr in 1-5 {micro}m presolar SiC and graphite grains isolated from the Murchison CM2 meteorite for the first time. These grains have survived the formation of the Solar System and isotopic analysis reveals a record of the stellar nucleosynthesis present during their formation. Mo and Zr, though present at less than 10 ppm in some grains, are particularly useful in that among their isotopes are members that can only be formed by distinct nucleosynthetic processes known as s-, p-, and r-process. Successful isotopic analysis of these elements requires both high selectivity (since these are trace elements) and high efficiency (since the total number of atoms available are limited). Resonant Ionization Spectroscopy is particularly useful and flexible in this application. While the sensitivity of this t.edmique has often been reported in the past, we focus hereon the very low noise properties of the technique. We further demonstrate the efficacy of noise removal by two complimentary methods. First we use the resonant nature of the signal to subtract background signal. Second we demonstrate that by choosing the appropriate resonance scheme background can often be dramatically reduced.

Pellin, M. J.; Nicolussi, G. K.

1998-02-19T23:59:59.000Z

376

Trace gas measurements in the Kuwait oil fire smoke plume  

SciTech Connect

The authors report trace gas measurements made both inside and outside the Kuwait oil-fire smoke plume during a flight of an instrumented research aircraft on May 30, 1991. Concentrations of SO{sub 2}, CO, and NO{sub x} averaged vertically and horizontally throughout the plume 80 km downwind of Kuwait City were 106, 127, and 9.1 parts per billion by volume (ppbv), respectively, above background concentrations. With the exception of SO{sub 2}, trace gas concentrations were far below typical US urban levels and primary national ambient air quality standards. Ambient ozone was titrated by NO in the dark, dense core of the smoke plume close to the fires, and photochemical ozone production was limited to the diffuse edge of the plume. Photochemical O{sub 3} production was noted throughout the plume at a distance of 160 km downwind of Kuwait City, and averaged 2.3 ppbv per hour during the first 3 hours of transport. Little additional photochemical production was noted at a downwind range of 340 km. The fluxes of sulfur dioxide, carbon monoxide, and reactive nitrogen from the roughly 520 fires still burning on May 30, 1991 are estimated at 1.4 x 10{sup 7} kg SO{sub 2}/d, 6.9 x 10{sup 6} kg CO/d, and 2.7 x 10{sup 5} kg N/d, respectively. Generally low concentrations of CO and NO{sub x} indicate that the combustion was efficient and occurred at low temperatures. Low total nonmethane hydrocarbon concentrations suggest that the volatile components of the petroleum were burned efficiently. 37 refs., 4 figs., 4 tabs.

Luke, W.T.; Kok, G.L.; Schillawski, R.D.; Zimmerman, P.R.; Greenberg, J.P.; Kadavanich, M. [National Center for Atmospheric Research, Boulder, CO (United States)

1992-09-20T23:59:59.000Z

377

Data transmission element for downhole drilling components  

DOE Patents (OSTI)

A robust data transmission element for transmitting information between downhole components, such as sections of drill pipe, in the presence of hostile environmental conditions, such as heat, dirt, rocks, mud, fluids, lubricants, and the like. The data transmission element components include a generally U-shaped annular housing, a generally U-shaped magnetically conductive, electrically insulating element such as ferrite, and an insulated conductor. Features on the magnetically conducting, electrically insulating element and the annular housing create a pocket when assembled. The data transmission element is filled with a polymer to retain the components within the annular housing by filling the pocket with the polymer. The polymer can bond with the annular housing and the insulated conductor but preferably not the magnetically conductive, electrically insulating element. A data transmission element is mounted within a recess proximate a mating surface of a downhole drilling component, such as a section of drill pipe.

Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David S. (Lehi, UT); Dahlgren, Scott (Provo, UT); Fox, Joe (Spanish Fork, UT); Sneddon, Cameron (Provo, UT); Briscoe, Michael (Lehi, UT)

2006-01-31T23:59:59.000Z

378

Renewable Energy Community: Key Elements  

NLE Websites -- All DOE Office Websites (Extended Search)

of Energy of Energy Office of Energy Efficiency & Renewable Energy National Renewable Energy Laboratory Innovation for Our Energy Future A Renewable Energy Community: Key Elements A reinvented community to meet untapped customer needs for shelter and transportation with minimal environmental impacts, stable energy costs, and a sense of belonging N. Carlisle, J. Elling, and T. Penney Technical Report NREL/TP-540-42774 January 2008 NREL is operated by Midwest Research Institute ● Battelle Contract No. DE-AC36-99-GO10337 National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by Midwest Research Institute * Battelle

379

UNIFIED FINITE ELEMENT DISCRETIZATIONS OF COUPLED DARCY-STOKES FLOW  

E-Print Network (OSTI)

by using standard Stokes elements like the MINI element or the Taylor­Hood element in the entire domain elements like the Taylor­Hood element or the MINI element for the Stokes region. The similar approach], to overcome this problem. This finite element space is defined with respect to a rectangular grid. On each

Winther, Ragnar

380

Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen and Ingo Wald  

E-Print Network (OSTI)

-2007-001 Scientific Computing and Imaging Institute University of Utah Salt Lake City, UT 84112 USA1 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen and Ingo Wald UUSCI. Technical Report No UUSCI-2007-001 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll Charles

Utah, University of

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS  

E-Print Network (OSTI)

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS JULI in the Sobolev trace embedding H1() Lq() in a bounded smooth domain for critical or subcritical q, that is 1 embedding H1 () Lq () for critical or subcritical exponents, 1

Rossi, Julio D.

382

The Measurement of Trace Emissions and Combustion Characteristics for a Mass Fire  

E-Print Network (OSTI)

32 The Measurement of Trace Emissions and Combustion Characteristics for a Mass Fire Ronald A of emissions from biomass burning on global climate. While the burning of biomass constitutes a large fraction of world emis- sions, there are insufficient data on the combustion efficiency, emission factors, and trace

383

Trace metal behaviour in riverine sediments: role of organic matter and sulphides Adeline Charriaua  

E-Print Network (OSTI)

1 Trace metal behaviour in riverine sediments: role of organic matter and sulphides Authors Adeline : 10.1016/j.apgeochem.2010.11.005 #12;2 Abstract Three sediment cores were collected in the Scheldt. The speciation and the distribution of trace metals in pore waters and sediment particles were assessed through

Paris-Sud XI, Université de

384

Solar Energy 74 (2003) 157173 Comparison between ray-tracing simulations and bi-directional  

E-Print Network (OSTI)

Solar Energy 74 (2003) 157­173 Comparison between ray-tracing simulations and bi-Louis Scartezzini a Solar Energy and Building Physics Laboratory LESO-PB, Swiss Federal Institute of Technology EPFL-tracing software. For the first time, an attempt is made to validate detailed bi-directional properties

385

Bunker: A Privacy-Oriented Platform for Network Tracing Andrew G. Miklas  

E-Print Network (OSTI)

Bunker: A Privacy-Oriented Platform for Network Tracing Andrew G. Miklas , Stefan Saroiu , Alec processing and anony- mization must be performed at line speed. This paper presents Bunker, a network tracing benefits of online anonymization. Bunker uses virtualization, encryption, and restricted I/O interfaces

Hunt, Galen

386

RATS: restoration-aware trace signal selection for post-silicon validation  

Science Journals Connector (OSTI)

Post-silicon validation is one of the most important and expensive tasks in modern integrated circuit design methodology. The primary problem governing post-silicon validation is the limited observability due to storage of a small number of signals in ... Keywords: post-silicon validation, restoration, trace buffer, trace signals

Kanad Basu; Prabhat Mishra

2013-04-01T23:59:59.000Z

387

White-light flares: A TRACE/RHESSI overview H. S. Hudson  

E-Print Network (OSTI)

White-light flares: A TRACE/RHESSI overview H. S. Hudson Space Sciences Laboratory, University includes a "white light" imaging capability with novel characteristics. Many flares with such white. The spectral response of the TRACE white-light passband extends into the UV, so these data capture

Hudson, Hugh

388

Gas Source Tracing With a Mobile Robot Using an Adapted Moth Strategy  

E-Print Network (OSTI)

Gas Source Tracing With a Mobile Robot Using an Adapted Moth Strategy Achim Lilienthal, Denis,reiman,zell}@informatik.uni-tuebingen.de Abstract. As a sub-task of the general gas source localisation problem, gas source tracing is supposed to guide a gas-sensitive mobile system towards a source by using the cues determined from the gas

Zell, Andreas

389

Export of Asian pollution during two cold front episodes of the TRACE-P experiment  

E-Print Network (OSTI)

of the Asian outflow by fragmenting the pollution plume. INDEX TERMS: 0365 Atmospheric Composition and Atmospheric Dynamics: Mesoscale meteorology; KEYWORDS: warm conveyor belt, TRACE-P, pollution Citation: MariExport of Asian pollution during two cold front episodes of the TRACE-P experiment C. Mari

Palmer, Paul

390

Validation of a Model of a Resonant Optothermoacoustic Trace Gas Sensor  

E-Print Network (OSTI)

Validation of a Model of a Resonant Optothermoacoustic Trace Gas Sensor N. Petra1, J. Zweck1, S. E, Rice University, Houston, TX 77005, USA E-mail: zweck@umbc.edu Abstract: A model for a resonant. At low concentrations, the molecular dynamics of the trace gas do not influence the signal. © 2010

Minkoff, Susan E.

391

LaserSPECks:: laser SPECtroscopic trace-gas sensor networks - sensor integration and applications  

Science Journals Connector (OSTI)

We introduce a novel laser spectroscopic trace-gas sensor platform, LaserSPECks that integrates recently developed miniature quartz-enhanced photoacoustic spectroscopy (QE-PAS) gas sensing technology. This universal platform uses infrared laser spectroscopy ... Keywords: lasers, sensors, spectroscopy, trace gas sensing

Stephen So; Farinaz Koushanfar; Anatoliy Kosterev; Frank Tittel

2007-04-01T23:59:59.000Z

392

T-720: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0: Blue Coat Director HTTP Trace Processing Flaw Permits 0: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks T-720: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks September 19, 2011 - 8:45am Addthis PROBLEM Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks. PLATFORM: All versions of Director prior to 5.5.2.3 are vulnerable. ABSTRACT: A vulnerability was reported in Blue Coat Director. A remote user can conduct cross-site scripting attacks. reference LINKS: Blue Coat Advisories ID: SA62 SecurityTracker Alert ID: 1026061 Blue Coat Director 510 Blue Coat SGME 5 IMPACT ASSESSMENT: Medium Discussion: An attacker can use the HTTP TRACE method to echo malicious script back to the client as part of a Cross Site Scripting (XSS) attack. No

393

V-011: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support Lets  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support 1: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support Lets Remote Users Obtain Potentially Sensitive Information V-011: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support Lets Remote Users Obtain Potentially Sensitive Information October 26, 2012 - 6:00am Addthis PROBLEM: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support Lets Remote Users Obtain Potentially Sensitive Information PLATFORM: Software version: 6.2.3, 6.2.3.1 ABSTRACT: A vulnerability was reported in IBM Tivoli Monitoring. REFERENCE LINKS: IBM Support Document: 1614003 IBM Support Portal SecurityTracker Alert ID: 1027692 IMPACT ASSESSMENT: High DISCUSSION: A remote user may be able to conduct HTTP TRACE and HTTP TRACK attacks to access sensitive information from the HTTP headers.

394

Tool for Rapid Assessment of City Energy (TRACE) | Open Energy Information  

Open Energy Info (EERE)

Tool for Rapid Assessment of City Energy (TRACE) Tool for Rapid Assessment of City Energy (TRACE) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Tool for Rapid Assessment of City Energy (TRACE) Agency/Company /Organization: Energy Sector Management Assistance Program of the World Bank Sector: Climate Focus Area: Renewable Energy, Buildings, Energy Efficiency Topics: Low emission development planning, Pathways analysis Resource Type: Training materials, Software/modeling tools User Interface: Website Website: esmap.org/esmap/TRACE Cost: Free Equivalent URI: cleanenergysolutions.org/content/tool-rapid-assessment-city-energy-tra Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance References: TRACE[1] This tool offers cities a quick and easy way to assess their energy

395

Microwave Plasma Monitoring System For Real-Time Elemental Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

air for the presence of minor amounts of elements, particularly transition metals, rare earth elements, actinides, and alkali and alkaline earth elements. The invention apparatus...

396

Proposed Data Elements for PARS II Web Application | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Data Elements for PARS II Web Application Proposed Data Elements for PARS II Web Application Proposed Data Elements for PARS II Web Application More Documents &...

397

Categorical Exclusion Determinations: Fossil Energy | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

June 4, 2010 June 4, 2010 CX-002647: Categorical Exclusion Determination Development of Biochemical Techniques for the Extraction of Mercury from Waste Streams Containing Coal CX(s) Applied: B3.6 Date: 06/04/2010 Location(s): Morgantown, West Virginia Office(s): Fossil Energy, National Energy Technology Laboratory June 4, 2010 CX-002646: Categorical Exclusion Determination Polymer Nanocomposites for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 06/04/2010 Location(s): Morgantown, West Virginia Office(s): Fossil Energy, National Energy Technology Laboratory June 4, 2010 CX-002645: Categorical Exclusion Determination Fine Coal Flotation and Removal of Toxic Trace Elements CX(s) Applied: B3.6 Date: 06/04/2010 Location(s): Morgantown, West Virginia Office(s): Fossil Energy, National Energy Technology Laboratory

398

LEACHING OF SLAG FROM STEEL RECYCLING: RADIONUCLIDES AND STABLE ELEMENTS. DATA REPORT, JAN.15, 1997, REVISED SEPT.9, 1997  

SciTech Connect

Of primary importance to this study are releases of radionuclides from slags. However, releases of other constituents also provide valuable information on releases of elements that may be toxic (e.g. Cr) or that may be used as analogs for radionuclides (e.g. K for Cs). In addition, leaching of bulk constituents from the slag gives information on weathering rates of the bulk material that can be used to estimate releases of non-leachable elements. Consequently, we have examined leaching of: radionuclides from those sloags that contain them; bulk elemental constituents of the slags; anionic constituents; trace elements, through spot checks of concentrations in leachates. Analysis by ICP of elemental constituents in leachates from radioactive samples was limited to those leachate samples that contained no detectable radionuclides, to avoid contamination of the ICP. In this data report we present leaching results for five slags that were produced by recycling steel. Two of the slags were generated at facilities that treat radioactively contaminated scrap, consequently the slag contains radionuclides. The slag from the other three was not contaminated. Because of this, we were able to examine the chemical composition of the slag and of the leachate generated during tests of these slags. For these materials we believe that leach rates of the stable elements can be used as analogs for radionuclides if the same steel processing method were used for radioactive material.

FUHRMANN,M.SCHOONEN,M.

2003-07-31T23:59:59.000Z

399

Element One, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Element One, Element One, Inc. America's Next Top Energy Innovator Challenge 191524 likes Element One, Inc. National Renewable Energy Laboratory Element One's detection products will change the paradigm in the way hydrogen and other hazardous gas leaks are detected, achieving a new level of safety in existing industrial and emerging consumer environments. Element One has patented the only available coatings for the detection of hydrogen that change color reversibly or non-reversibly as desired to give both current and historical information about leaked hydrogen. In 2011, Element One optioned to license three National Renewable Energy Laboratory (NREL) patents that complement its own technologies. Completed and proposed testing of our indicators for different applications

400

Element One, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Element One, Element One, Inc. America's Next Top Energy Innovator Challenge 191524 likes Element One, Inc. National Renewable Energy Laboratory Element One's detection products will change the paradigm in the way hydrogen and other hazardous gas leaks are detected, achieving a new level of safety in existing industrial and emerging consumer environments. Element One has patented the only available coatings for the detection of hydrogen that change color reversibly or non-reversibly as desired to give both current and historical information about leaked hydrogen. In 2011, Element One optioned to license three National Renewable Energy Laboratory (NREL) patents that complement its own technologies. Completed and proposed testing of our indicators for different applications

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Element One, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Element One, Element One, Inc. America's Next Top Energy Innovator Challenge 191524 likes Element One, Inc. National Renewable Energy Laboratory Element One's detection products will change the paradigm in the way hydrogen and other hazardous gas leaks are detected, achieving a new level of safety in existing industrial and emerging consumer environments. Element One has patented the only available coatings for the detection of hydrogen that change color reversibly or non-reversibly as desired to give both current and historical information about leaked hydrogen. In 2011, Element One optioned to license three National Renewable Energy Laboratory (NREL) patents that complement its own technologies. Completed and proposed testing of our indicators for different applications

402

Variations of the Isotopic Ratios of Uranium in Environmental Samples Containing Traces of Depleted Uranium: Theoretical and Experimental Aspects  

Science Journals Connector (OSTI)

......Samples Containing Traces of Depleted Uranium: Theoretical and Experimental...for the detection of traces of depleted uranium (DU) in environmental samples...percentage composition is about 20% depleted uranium and 80% natural uranium, for......

M. Magnoni; S. Bertino; B. Bellotto; M. Campi

2001-12-01T23:59:59.000Z

403

The History of Element 43Technetium  

Science Journals Connector (OSTI)

The History of Element 43Technetium ... Department of Mining, Metallurgical and Materials Engineering, Laval University, G1K 7P4 Quebec City, Canada ...

Fathi Habashi

2006-02-01T23:59:59.000Z

404

Two position optical element actuator device  

DOE Patents (OSTI)

The present invention is a two position optical element actuator device utilizing a powered means to hold an actuation arm, to which an optical element is attached, in a first position. A non-powered means drives the actuation arm to a second position, when the powered means ceases to receive power. The optical element may be a electromagnetic (EM) radiation or particle source, an instrument, or EM radiation or particle transmissive, reflective or absorptive elements. A bearing is used to transfer motion and smoothly transition the actuation arm from the first to second position.

Holdener, Fred R. (Tracy, CA); Boyd, Robert D. (Livermore, CA)

2002-01-01T23:59:59.000Z

405

The New Element Berkelium (Atomic Number 97)  

DOE R&D Accomplishments (OSTI)

An isotope of the element with atomic number 97 has been discovered as a product of the helium-ion bombardment of americium. The name berkelium, symbol Bk, is proposed for element 97. The chemical separation of element 97 from the target material and other reaction products was made by combinations of precipitation and ion exchange adsorption methods making use of its anticipated (III) and (IV) oxidation states and its position as a member of the actinide transition series. The distinctive chemical properties made use of in its separation and the equally distinctive decay properties of the particular isotope constitute the principal evidence for the new element.

Seaborg, G. T.; Thompson, S. G.; Ghiorso, A.

1950-04-26T23:59:59.000Z

406

Bi-stable optical element actuator device  

DOE Patents (OSTI)

The present invention is a bistable optical element actuator device utilizing a powered means to move an actuation arm, to which an optical element is attached, between two stable positions. A non-powered means holds the actuation arm in either of the two stable positions. The optical element may be a electromagnetic (EM) radiation or particle source, an instrument, or EM radiation or particle transmissive reflective or absorptive elements. A bearing is used to transfer motion and smoothly transition the actuation arm between the two stable positions.

Holdener, Fred R. (Tracy, CA); Boyd, Robert D. (Livermore, CA)

2002-01-01T23:59:59.000Z

407

Determination of Method Detection Limits for Trace 232-Thorium and 238-Uranium in Copper using Ion Exchange and ICPMS  

SciTech Connect

Determination of Method Detection Limits for Trace 232-Thorium and 238-Uranium in Copper using Ion Exchange and ICPMS

Hoppe, Eric W.; LaFerriere, Brian D.; Maiti, Tapas C.; Soin, Aleksandr

2014-04-15T23:59:59.000Z

408

Evaluating fugacity models for trace components in landfill gas  

Science Journals Connector (OSTI)

A fugacity approach was evaluated to reconcile loadings of vinyl chloride (chloroethene), benzene, 1,3-butadiene and trichloroethylene in waste with concentrations observed in landfill gas monitoring studies. An evaluative environment derived from fictitious but realistic properties such as volume, composition, and temperature, constructed with data from the Brogborough landfill (UK) test cells was used to test a fugacity approach to generating the source term for use in landfill gas risk assessment models (e.g. GasSim). SOILVE, a dynamic Level II model adapted here for landfills, showed greatest utility for benzene and 1,3-butadiene, modelled under anaerobic conditions over a 10year simulation. Modelled concentrations of these components (95?300?gm?3; 43?gm?3) fell within measured ranges observed in gas from landfills (24?300180?000?gm?3; 2070?gm?3). This study highlights the need (i) for representative and time-referenced biotransformation data; (ii) to evaluate the partitioning characteristics of organic matter within waste systems and (iii) for a better understanding of the role that gas extraction rate (flux) plays in producing trace component concentrations in landfill gas.

Sophie Shafi; Andrew Sweetman; Rupert L. Hough; Richard Smith; Alan Rosevear; Simon J.T. Pollard

2006-01-01T23:59:59.000Z

409

Evaluation of sediment trace metal records as paleoproductivity and paleoxygenation proxies in the upwelling center off Concepcin, Chile (36S)  

E-Print Network (OSTI)

Evaluation of sediment trace metal records as paleoproductivity and paleoxygenation proxies the records of several trace metals sensitive to redox conditions in continental shelf sediments off ). The goals of this study were to determine the input of trace metals to the sediment and to decipher how

Demouchy, Sylvie

410

RAPID 3D TRACING OF THE MOUSE BRAIN NEUROVASCULATURE WITH LOCAL MAXIMUM INTENSITY PROJECTION AND MOVING WINDOWS  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 1. 3D Frangi vs. 2D Frangi with MIP cube . . . . . . . . 49 a. Synthetic data tracing result . . . . . . . . . . . . 49 b. Performance comparison . . . . . . . . . . . . . . 50 c. Validation . . . . . . . . . . . . . . . . . . . . . . 51 2. MW... with MIP cube . . . . . . . . . . . . . . . . . . . 53 a. Synthetic data tracing result . . . . . . . . . . . . 53 b. Performance comparison . . . . . . . . . . . . . . 54 c. Validation . . . . . . . . . . . . . . . . . . . . . . 54 3. Tracing in low...

Han, Dong Hyeop

2011-10-21T23:59:59.000Z

411

Elemental Modes of Occurrence in an Illinois #6 Coal and Fractions Prepared by Physical Separation Techniques at a Coal Preparation Plant  

SciTech Connect

In order to gain better insight into elemental partitioning between clean coal and tailings, modes of occurrence have been determined for a number of major and trace elements (S, K, Ca, V, Cr, Mn, Fe, Zn, As, Se, Pb) in an Illinois No.6 coal and fractions prepared by physical separation methods at a commercial coal preparation plant. Elemental modes of occurrence were largely determined directly by XAFS or Moessbauer spectroscopic methods because the concentrations of major minerals and wt.% ash were found to be highly correlated for this coal and derived fractions, rendering correlations between individual elements and minerals ambiguous for inferring elemental modes of occurrence. Of the major elements investigated, iron and potassium are shown to be entirely inorganic in occurrence. Most (90%) of the iron is present as pyrite, with minor fractions in the form of clays and sulfates. All potassium is present in illitic clays. Calcium in the original coal is 80-90% inorganic and is divided between calcite, gypsum, and illite, with the remainder of the calcium present as carboxyl-bound calcium. In the clean coal fraction, organically associated Ca exceeds 50% of the total calcium. This organically-associated form of Ca explains the poorer separation of Ca relative to both K and ash. Among the trace elements, V and Cr are predominantly inorganically associated with illite, but minor amounts (5-15% Cr, 20-30% V) of these elements are also organically associated. Estimates of the V and Cr contents of illite are 420 ppm and 630 ppm, respectively, whereas these elements average 20 and 8 ppm in the macerals. Arsenic in the coal is almost entirely associated with pyrite, with an average As content of about 150 ppm, but some As ({approx} 10%) is present as arsenate due to minor oxidation of the pyrite. The mode of occurrence of Zn, although entirely inorganic, is more complex than normally noted for Illinois basin coals; about 2/3 is present in sphalerite, with lesser amounts associated with illite and a third form yet to be conclusively identified. The non-sulfide zinc forms are removed predominantly by the first stage of separation (rotary breaker), whereas the sphalerite is removed by the second stage (heavy media). Germanium is the only trace element determined to have a predominantly organic association.

Huggins, F.; Seidu, L; Shah, N; Huffman, G; Honaker, R; Kyger, J; Higgins, B; Robertson, J; Pal, S; Seehra, M

2009-01-01T23:59:59.000Z

412

Insertion Preference of Maize and Rice Miniature Inverted Repeat Transposable Elements as Revealed by the Analysis of Nested Elements  

Science Journals Connector (OSTI)

...DNA element. This element (called Midway), initially found as an 850-bp...closer examination indicates that Midway harbors another Stowaway element (Stowaway-Os25). That there are three Midway/Stowaway composite elements in the...

Ning Jiang; Susan R. Wessler

413

Appendix: Some elements of Indian Astronomy  

E-Print Network (OSTI)

. Z Z' N S P' P O W E Q Q' 2 #12;Appendix: Some elements of Indian Astronomy to two pointsChapter 1 Appendix: Some elements of Indian Astronomy 1.1 Generalities The sky is considered) perpendicular to the Celestial axis. Let us imagine an observer (O) on Earth. Since the Earth and thus the point

Paris-Sud XI, Université de

414

The New Element Curium (Atomic Number 96)  

DOE R&D Accomplishments (OSTI)

Two isotopes of the element with atomic number 96 have been produced by the helium-ion bombardment of plutonium. The name curium, symbol Cm, is proposed for element 96. The chemical experiments indicate that the most stable oxidation state of curium is the III state.

Seaborg, G. T.; James, R. A.; Ghiorso, A.

1948-00-00T23:59:59.000Z

415

Microcalorimeter Magnetic Sensor Geometries Using Superconducting Elements  

SciTech Connect

We describe a numerical code developed to estimate performance of magnetic microcalorimeter configurations, including superconducting elements and SQUID characteristics. We present results of a preliminary design analysis showing that composite sensors with both superconducting and paramagnetic elements should realize substantial gains in magnetic flux signal per magnetization change of the paramagnet, compared to sensors containing only paramagnet.

Boyd, S. T. P. [University of New Mexico, MSC07 4220, Albuquerque NM 87131-0001 (United States); Cantor, R. H. [STAR Cryoelectronics, 25-A Bisbee Ct., Santa Fe NM 87508-1338 (United States)

2009-12-16T23:59:59.000Z

416

William Fowler and Elements in the Stars  

NLE Websites -- All DOE Office Websites (Extended Search)

William Fowler and Elements in the Stars Resources with Additional Information William A. Fowler Courtesy AIP Emilio Segrè Visual Archives 'William A. Fowler ... shared the 1983 Nobel Prize in physics for his research into the creation of chemical elements inside stars ... . During his career in nuclear physics and nuclear astrophysics, which spanned more that 60 years, Fowler was primarily concerned with studies of fusion reactions--how the nuclei of lighter chemical elements fuse to create the heavier ones in a process known as nucleosynthesis. In 1957, Fowler coauthored ... the seminal paper "Synthesis of the Elements in the Stars", [which] showed that all of the elements from carbon to uranium could be produced by nuclear processes in stars, starting only with the hydrogen and helium produced in the Big Bang.

417

Element 74, the Wolfram Versus Tungsten Controversy  

SciTech Connect

Two and a quarter centuries ago, a heavy mineral ore was found which was thought to contain a new chemical element called heavy stone (or tungsten in Swedish). A few years later, the metal was separated from its oxide and the new element (Z=74) was called wolfram. Over the years since that time, both the names wolfram and tungsten were attached to this element in various countries. Sixty years ago, IUPAC chose wolfram as the official name for the element. A few years later, under pressure from the press in the USA, the alternative name tungsten was also allowed by IUPAC. Now the original, official name 'wolfram' has been deleted by IUPAC as one of the two alternate names for the element. The history of this controversy is described here.

Holden,N.E.

2008-08-11T23:59:59.000Z

418

Zeros in (inverse) bremsstrahlung matrix elements  

Science Journals Connector (OSTI)

We discuss the possibility of zeros in the nonrelativistic radiative continuum-continuum matrix element for electron-atom (inverse) bremsstrahlung. As demonstrated earlier for upward transitions from bound states, the occurrence of different signs for the free-free matrix element in limiting cases, plus the requirement of continuity, implies the existence of zeros. Using knowledge of the sign of the dipole matrix element in the soft- and hard-photon limits with one continuum electron energy held fixed, we show that zeros can occur in the s-p matrix element. We discuss the connection of our results to elastic scattering and to Ramsauer-Townsend minima. We consider the observability of zeros in this (s-p) matrix element manifested as minima in the cross sections.

C. David Shaffer; R. H. Pratt; Sung Dahm Oh

1998-01-01T23:59:59.000Z

419

Smoothing of respiratory motion traces for motion-compensated radiotherapy  

SciTech Connect

Purpose: The CyberKnife system has been used successfully for several years to radiosurgically treat tumors without the need for stereotactic fixation or sedation of the patient. It has been shown that tumor motion in the lung, liver, and pancreas can be tracked with acceptable accuracy and repeatability. However, highly precise targeting for tumors in the lower abdomen, especially for tumors which exhibit strong motion, remains problematic. Reasons for this are manifold, like the slow tracking system operating at 26.5 Hz, and using the signal from the tracking camera ''as is''. Since the motion recorded with the camera is used to compensate for system latency by prediction and the predicted signal is subsequently used to infer the tumor position from a correlation model based on x-ray imaging of gold fiducials around the tumor, camera noise directly influences the targeting accuracy. The goal of this work is to establish the suitability of a new smoothing method for respiratory motion traces used in motion-compensated radiotherapy. The authors endeavor to show that better prediction--With a lower rms error of the predicted signal--and/or smoother prediction is possible using this method. Methods: The authors evaluated six commercially available tracking systems (NDI Aurora, PolarisClassic, Polaris Vicra, MicronTracker2 H40, FP5000, and accuTrack compact). The authors first tracked markers both stationary and while in motion to establish the systems' noise characteristics. Then the authors applied a smoothing method based on the a trous wavelet decomposition to reduce the devices' noise level. Additionally, the smoothed signal of the moving target and a motion trace from actual human respiratory motion were subjected to prediction using the MULIN and the nLMS{sub 2} algorithms. Results: The authors established that the noise distribution for a static target is Gaussian and that when the probe is moved such as to mimic human respiration, it remains Gaussian with the exception of the FP5000 and the Aurora systems. The authors also showed that the proposed smoothing method can indeed be used to filter noise. The signal's jitter dropped by as much as 95% depending on the tracking system employed. Subsequently, the 3D prediction error (rms) for a prediction horizon of 150 ms on a synthetic signal dropped by up to 37% when using a normalized LMS prediction algorithm (nLMS{sub 2}) and hardly changed when using a MULIN algorithm. When smoothing a real signal obtained in our laboratory, the improvement of prediction was similar: Up to 30% for both the nLMS{sub 2} and the best MULIN algorithm. The authors also found a noticeable increase in smoothness of the predicted signal, the relative jitter dropped by up to 95% on the real signal, and on the simulated signal. Conclusions: In conclusion, the authors can say that preprocessing of marker data is very useful in motion-compensated radiotherapy since the quality of prediction increases. This will result in better performance of the correlation model. As a side effect, since the prediction of a preprocessed signal is also less noisy, the authors expect less robot vibration resulting in better targeting accuracy and less strain on the robot gears.

Ernst, Floris; Schlaefer, Alexander; Schweikard, Achim [Institute for Robotics and Cognitive Systems, University of Luebeck, Ratzeburger Allee 160, Luebeck SH 23538 (Germany)

2010-01-15T23:59:59.000Z

420

Hydrogen and helium traces in type Ib-c supernovae  

E-Print Network (OSTI)

The spectroscopic properties of a selected optical photospheric spectra of core collapse supernovae (CCSNe) are investigated.Special attention is devoted to traces of hydrogen at early phases. The generated spectra are found to match the observed ones reasonably well, including a list of only 23 candidate ions. Guided by SN Ib 1990I, the observed trough near 6300\\AA is attributed to H$\\alpha$ in almost all Type Ib events, although in some objects it becomes too weak to be discernible, especially at later phases. Alternative line identifications are discussed. Differences in the way hydrogen manifests its presence within CCSNe are highlighted. In Type Ib SNe, the H$\\alpha$ contrast velocity (i.e. line velocity minus the photospheric velocity) seems to increase with time at early epochs, reaching values as high as 8000 km s$^{-1}$ around 15-20 days after maximum and then remains almost constant. The derived photospheric velocities, indicate a lower velocity for Type II SNe 1987A and 1999em as compared to SN Ic 1994I and SN IIb 1993J, while Type Ib events display a somewhat larger variation. The scatter, around day 20, is measured to be $\\sim$5000 km s$^{-1}$. Following two simple approaches, rough estimates of ejecta and hydrogen masses are given. A mass of hydrogen of approximately 0.02 $M_\\odot$ is obtained for SN 1990I, while SNe 1983N and 2000H ejected $\\sim$0.008 $M_\\odot$ and $\\sim$0.08 $M_\\odot$ of hydrogen, respectively. SN 1993J has a higher hydrogen mass, $\\sim 0.7$ $M_\\odot$ with a large uncertainty. A low mass and thin hydrogen layer with very high ejection velocities above the helium shell, is thus the most likely scenario for Type Ib SNe. Some interesting and curious issues relating to oxygen lines suggest future investigations.

A. Elmhamdi; I. J. Danziger; D. Branch; B. Leibundgut; E. Baron; R. P. Kirshner

2006-04-04T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Atom Trap Trace Analysis at ANL | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Atom Trap Trace Analysis at ANL Atom Trap Trace Analysis at ANL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Atom Trap Trace Analysis at ANL Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Atom Trap Trace Analysis (ATTA) to determine isotopic abundances. Developed at: Argonne National Laboratory Developed in: 1999-current

422

Interactive Isosurface Ray Tracing of Large Octree Aaron Knoll, Ingo Wald, Steven Parker, and Charles Hansen  

E-Print Network (OSTI)

, and Charles Hansen UUSCI-2006-026 Scientific Computing and Imaging Institute University of Utah Salt Lake City-026 Interactive Isosurface Ray Tracing of Large Octree Volumes Aaron Knoll Ingo Wald Steven Parker Charles Hansen

Utah, University of

423

Trace metal contamination of waters, sediments, and organisms of the Swan Lake area of Galveston Bay  

E-Print Network (OSTI)

facility (Gulf Coast Waste Disposal Authority) is located north of the Wah Chang Ditch. Consequently there have been concerns about possible metal contamination in this area. I determined trace metal concentrations in water, sediments, and organisms (oyster...

Park, Junesoo

1995-01-01T23:59:59.000Z

424

Experimental studies on the bioaccumulation and bioavailability of colloidally-bound trace metals to penaeid shrimp  

E-Print Network (OSTI)

Trace metals in estuarine systems frequently exist as colloid-ion complexes and the chemical characteristics of these complexes may alter their bioavailability. The relative hydrophobicity of the colloid-ion complex could influence bio-uptake across...

Carvalho, Roberta Anne

1996-01-01T23:59:59.000Z

425

3D-printed miniature gas cell for photoacoustic spectroscopy of trace gases  

Science Journals Connector (OSTI)

A new methodology for the development of miniature photoacoustic trace gas sensors using 3D printing is presented. A near-infrared distributed feedback (DFB) laser is used together...

Bauer, Ralf; Stewart, George; Johnstone, Walter; Boyd, Euan; Lengden, Michael

2014-01-01T23:59:59.000Z

426

Laser-based trace gas detection with applications in biology and medical science  

Science Journals Connector (OSTI)

OPOs and QC-lasers in combination with off-axis ICOS are used to detect trace gases emitted from biological tissue. Ethylene and Nitric oxide emission are detected from plants and HCN...

Harren, Frans J M

427

E-Print Network 3.0 - airbone trace metals Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

and Loss of Heavy Metals from Experimental Salt Marsh Plots Summary: L of 12 M trace metal grade hydrochloric acid (HCl) and reheated the samples to 65-80 C in a water bath......

428

08ICES-0031 Advanced quartz-enhanced photoacoustic trace gas sensor for  

E-Print Network (OSTI)

08ICES-0031 Advanced quartz-enhanced photoacoustic trace gas sensor for early fire detection A. A, overheating of electric wiring insulation, unintended release of chemicals, or malfunctions of the air

429

Recent progress in high precision atmospheric trace gas instruments using mid-infrared quantum cascade lasers  

Science Journals Connector (OSTI)

We report results from high precision spectroscopic instruments for atmospheric trace gases using with mid-IR quantum cascade lasers. Numerous gases can be measured with 1s absorption...

McManus, John B; Zahniser, Mark; Nelson, David; McGovern, Ryan; Agnese, Mike

430

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.6  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.2.6 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

431

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.5  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.2.5 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

432

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.9  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.2.9 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

433

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.8  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.2.8 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

434

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.7  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.2.7 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

435

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.1.0  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.1.1.0 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

436

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.4  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.2.4 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

437

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.2  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.1.2 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

438

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.0.0  

Energy.gov (U.S. Department of Energy (DOE))

Provides required documentation that TRACE 700 version 6.1.0.0 meets Internal Revenue Code 179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

439

RAPID COMMUNICATION CW DFB RT diode laser-based sensor for trace-gas detection  

E-Print Network (OSTI)

wave thermoelectrically cooled, distributed feedback diode laser will be described. The CW TEC DFB- moelectrically cooled (TEC), distributed feedback diode laser-based spectroscopic trace-gas sensor for ultra tunable diode laser absorption spectroscopy (TDLAS) and wavelength modulation spectroscopy

440

Statistical analysis of aerosol species, trace gasses, and meteorology in Chicago  

E-Print Network (OSTI)

possible pollutant sources. Keywords Atmospheric aerosols . Canonical correlation analysis . Chicago air pollution studies involve collection and anal- ysis of atmospheric aerosols and concurrent meteorol- ogy) and principal component analysis (PCA) were applied to atmospheric aerosol and trace gas concentrations

O'Brien, Timothy E.

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Printing 3D Electrical Traces in Additive Manufactured Parts via Low Melting Temperature  

E-Print Network (OSTI)

Printing 3D Electrical Traces in Additive Manufactured Parts via Low where commercial Additive Manufacturing (AM) techniques can be used to concurrently construct quality and robustness of systems produced using additive manufacturing (AM) techniques is beginning

Dollar, Aaron M.

442

Trace fossils and depositional environment of four clastic units, Upper Pennsylvanian megacyclothems, northeast Kansas  

E-Print Network (OSTI)

Purpose 6 Acknowledgments 6 PREVIOUS WORK 6 PALLOGEOGRAPHIC SETTING 8 STRATIGRAPIIIC DESCRIPTIONS 8 Rock Lake Shale and South Bend Limestone 8 Stull Shale Member 10 Tecumseh Shale 11 DISCUSSION 12 Bathymetry of trace fossils... 12 Cyclothems 13 Absence of body fossils 13 Distribution of trace fossils 14 PAGE INTERPRETATION 16 Rock Lake Shale and South Bend Limestone Members 16 Stull Shale Member 17 Tecumseh Shale 18 CONCLUSIONS 19 PALEONTOLOGIC...

Hakes, W. G.

1976-04-29T23:59:59.000Z

443

Questions and Answers - What is an element? How many elements are there?  

NLE Websites -- All DOE Office Websites (Extended Search)

An example of indirect evidenceused to study atoms? An example of indirect evidence<br>used to study atoms? Previous Question (An example of indirect evidence used to study atoms?) Questions and Answers Main Index Next Question (What is the difference between atoms and elements?) What is the difference betweenatoms and elements? What is an element? How many elements are there? An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing a single proton and a single electron. If you change the number of protons an atom has, you change the type of element it is. If you had very, very good eyes and could look at the atoms in a sample of hydrogen, you would notice that most of the hydrogen atoms would have no neutrons, some of them would have one neutron and a few of them would have

444

Helioseismic limit on heavy element abundance  

E-Print Network (OSTI)

Primary inversions of accurately measured solar oscillation frequencies coupled with the equations of thermal equilibrium and other input physics, enable us to infer the temperature and hydrogen abundance profiles inside the Sun. These profiles also help in setting constraints on the input physics as well as on heavy element abundance in the solar core. Using different treatments of plasma screening for nuclear reaction rates, limits on the cross-section of proton-proton nuclear reaction as a function of heavy element abundance in the solar core are obtained and an upper limit on heavy element abundance in the solar core is also derived from these results.

H. M. Antia; S. M. Chitre

2002-09-08T23:59:59.000Z

445

TRACES X-Ray Standard Safety Protocols 1. The equipment should be used under the guidance and supervision of the TRACES Staff or  

E-Print Network (OSTI)

exposed. 3. Personal dosimeter badges must be worn when operating portable X-ray equipment. Wrist sample. 5. The X-Ray instruments are located in TRACES and access is restricted. Furthermore of ANY X-Ray instrumentation is in progress. 8. All lights, meters and controls must be properly labeled

Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

446

Kinetics of Direct Oxidation of H2S in Coal Gas to Elemental Sulfur  

SciTech Connect

Removal of hydrogen sulfide (H{sub 2}S) from coal gasifier gas and sulfur recovery are key steps in the development of Department of Energy's (DOE's) advanced Vision 21 plants that produce electric power and clean transportation fuels with coal and natural gas. These Vision 21 plants will require highly clean coal gas with H{sub 2}S below 1 ppm and negligible amounts of trace contaminants such as hydrogen chloride, ammonia, alkali, heavy metals, and particulate. The conventional method of sulfur removal and recovery employing amine, Claus, and tail-gas treatment is very expensive. A second generation approach developed under DOE's sponsorship employs hot-gas desulfurization (HGD) using regenerable metal oxide sorbents followed by Direct Sulfur Recovery Process (DSRP). However, this process sequence does not remove trace contaminants and is targeted primarily towards the development of advanced integrated gasification combined cycle (IGCC) plants that produce electricity (not both electricity and transportation fuels). There is an immediate as well as long-term need for the development of cleanup processes that produce highly clean coal gas for next generation Vision 21 plants. To this end, a novel process is now under development at several research organizations in which the H{sub 2}S in coal gas is directly oxidized to elemental sulfur over a selective catalyst. Such a process is ideally suited for coal gas from commercial gasifiers with a quench system to remove essentially all the trace contaminants except H{sub 2}S. The direct oxidation of H{sub 2}S to elemental sulfur in the presence of SO{sub 2} is ideally suited for coal gas from commercial gasifiers with a quench system to remove essentially all the trace contaminants except H{sub 2}S. This direct oxidation process has the potential to produce a super clean coal gas more economically than both conventional amine-based processes and HGD/DSRP. The objectives of this research are to measure kinetics of direct oxidation of H{sub 2}S to elemental sulfur in the presence of a simulated coal gas mixture containing SO{sub 2}, H{sub 2}, and moisture, using 160-{micro}m C-500-04 alumina catalyst particles and 400 square cells/inch{sup 2}, {gamma}-Al{sub 2}O{sub 3}-wash-coated monolithic catalyst, and various reactors such as a micro packed-bed reactor, a micro bubble reactor, and a monolithic catalyst reactor, and to develop kinetic rate equations and model the direct oxidation process to assist in the design of large-scale plants. This heterogeneous catalytic reaction has gaseous reactants such as H{sub 2}S and SO{sub 2}. However, this heterogeneous catalytic reaction has heterogeneous products such as liquid elemental sulfur and steam.

K.C. Kwon

2005-11-01T23:59:59.000Z

447

Compound and Elemental Analysis | Open Energy Information  

Open Energy Info (EERE)

Compound and Elemental Analysis Compound and Elemental Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Compound and Elemental Analysis Details Activities (104) Areas (69) Regions (6) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Results can aid in the determination of fluid source regions and circulation pathways. Thermal: Certain elements exhibit high spatial correlation with high-temperature geothermal systems. Cost Information Low-End Estimate (USD): 15.001,500 centUSD 0.015 kUSD 1.5e-5 MUSD 1.5e-8 TUSD / compound Median Estimate (USD): 30.003,000 centUSD

448

Ion processing element with composite media  

DOE Patents (OSTI)

An ion processing element employing composite media disposed in a porous substrate, for facilitating removal of selected chemical species from a fluid stream. The ion processing element includes a porous fibrous glass substrate impregnated by composite media having one or more active components supported by a matrix material of polyacrylonitrile. The active components are effective in removing, by various mechanisms, one or more constituents from a fluid stream passing through the ion processing element. Due to the porosity and large surface area of both the composite medium and the substrate in which it is disposed, a high degree of contact is achieved between the active component and the fluid stream being processed. Further, the porosity of the matrix material and the substrate facilitates use of the ion processing element in high volume applications where it is desired to effectively process a high volume flows.

Mann, Nick R. (Blackfoot, ID); Tranter, Troy J. (Idaho Falls, ID); Todd, Terry A. (Aberdeen, ID); Sebesta, Ferdinand (Prague, CZ)

2009-03-24T23:59:59.000Z

449

Quantitative Elemental Analyses by Plasma Emission Spectroscopy  

Science Journals Connector (OSTI)

...Elemental Analyses by Plasma Emission Spectroscopy...Argon-supported inductively coupled plasmas operated at atmospheric pressures are excellent...HIGH-FREQUENCY ARGON PLASMA FOR OPTICAL EMISSION...EXPERIMENTAL-STUDY OF A 1-KW, 50-MHZ RF INDUCTIVELY COUPLED...

Velmer A. Fassel

1978-10-13T23:59:59.000Z

450

Quantitative Elemental Analyses by Plasma Emission Spectroscopy  

Science Journals Connector (OSTI)

...Elemental Analyses by Plasma Emission Spectroscopy...inductively coupled plasmas operated at atmospheric...INDUCTIVELY-COUPLED HIGH-FREQUENCY ARGON PLASMA FOR OPTICAL EMISSION...1-KW, 50-MHZ RF INDUCTIVELY COUPLED...STUDIES OF A RADIO-FREQUENCY INDUCTIVELY COUPLED...

Velmer A. Fassel

1978-10-13T23:59:59.000Z

451

Perfluorohalogenoorgano Compounds of Main Group 5 Elements  

Science Journals Connector (OSTI)

The compounds of the Main Group 5 elements phosphorus, arsenic, antimony, and bismuth, are covered to the end of 1973 in Perfluorhalogenorgano-Verbindungen der Hauptgruppenelemente, Part 3, 1975 (cited here ...

Alois Haas; Michael R. Chr. Gerstenberger

1983-01-01T23:59:59.000Z

452

Transuranium Elements in the Nuclear Fuel Cycle  

Science Journals Connector (OSTI)

Transuranium elements, neptunium, plutonium, americium, and curium, are formed via neutron capture processes of actinides, and are mainly by-products of fuel irradiation during the operation of a nuclear react...

Thomas Fanghnel; Jean-Paul Glatz; Rudy J. M. Konings

2010-01-01T23:59:59.000Z

453

Quantum Algorithms for Element Distinctness Harry Buhrman  

E-Print Network (OSTI)

Quantum Algorithms for Element Distinctness Harry Buhrman Christoph D¨urr Mark Heiligman§ Peter, France. Email: durr@lri.fr. §NSA, Suite 6111, Fort George G. Meade, MD 20755, USA. Email: mheilig

Magniez, Frédéric

454

Quantum Algorithms for Element Distinctness Harry Buhrman  

E-Print Network (OSTI)

Quantum Algorithms for Element Distinctness Harry Buhrman£ Christoph D¨urr? Mark Heiligman? Peter, France. Email: durr@lri.fr. ?NSA, Suite 6111, Fort George G. Meade, MD 20755, USA. Email: mheilig

de Wolf, Ronald

455

The Mutual Adjustment of Meteorological Elements  

Science Journals Connector (OSTI)

The complete set of equations of atmospheric fluid dynamics and thermodynamics contains time derivatives of five elements: u, v, w, p, ? (or T), i.e., it is of the fifth order in time. For initial value (Cauchy) ...

S. Panchev

1985-01-01T23:59:59.000Z

456

THE NEW ELEMENT CALIFORNIUM (ATOMIC NUMBER 98)  

E-Print Network (OSTI)

No, 66) as the names americium (No, curium (No, andthe production of element 98. Americium, the source for theneutron-irradiated americium in which it was produced as a

Thompson, S.G.; Street, K.,Jr.; Ghiorso, A.; Seaborg, G.T.

2008-01-01T23:59:59.000Z

457

Isotope/element fractionation during surface adsorption  

Science Journals Connector (OSTI)

The adsorption of ions onto mineral surfaces accompanies isotope/element fractionation in planets and asteroids. A model based on simple classical physics is presented to predict these fractionations. The agreement between the experimentally observed isotope/element ratios and their predicted values is found to be excellent. This fractionation can be demonstrated experimentally in advanced physics laboratories using macroscopic particles. The success of the model shows students that even a very complex naturally occurring process can be explained quantitatively with simple physics.

Gamini Seneviratne; Asiri Nanayakkara

2004-01-01T23:59:59.000Z

458

Quadrilateral/hexahedral finite element mesh coarsening  

DOE Patents (OSTI)

A technique for coarsening a finite element mesh ("FEM") is described. This technique includes identifying a coarsening region within the FEM to be coarsened. Perimeter chords running along perimeter boundaries of the coarsening region are identified. The perimeter chords are redirected to create an adaptive chord separating the coarsening region from a remainder of the FEM. The adaptive chord runs through mesh elements residing along the perimeter boundaries of the coarsening region. The adaptive chord is then extracted to coarsen the FEM.

Staten, Matthew L; Dewey, Mark W; Scott, Michael A; Benzley, Steven E

2012-10-16T23:59:59.000Z

459

Stretchable semiconductor elements and stretchable electrical circuits  

DOE Patents (OSTI)

The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.

Rogers, John A. (Champaign, IL); Khang, Dahl-Young (Seoul, KR); Menard, Etienne (Durham, NC)

2009-07-07T23:59:59.000Z

460

A new finite element lifting surface technique  

E-Print Network (OSTI)

Element Lifting Surface Technique. (May 1973) James David Kocurek, B. S. , Texas ASM University 1 Directed by: Dr. Balusu M. Rao A numerical lifting surface technique based on discrete vortex loading elements is developed for calculating the steady..., incompress- ; ible, aerodynamic load distribution on a general, nonplanar, ideal- 1 ized body. The method, described as the "Vortex Box" technique, has been applied to general planar wings of arbitrary straight line ' geometry and to annular wings...

Kocurek, James David

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Property:GRR/SubsectionElementNumber | Open Energy Information  

Open Energy Info (EERE)

SubsectionElementNumber SubsectionElementNumber Jump to: navigation, search Property Name GRR/SubsectionElementNumber Property Type Number Description The subsection element number of an element in the Geothermal Regulatory Roadmap. The value of this property is derived automatically by the element template and is used in sorting elements within a section. Pages using the property "GRR/SubsectionElementNumber" Showing 25 pages using this property. (previous 25) (next 25) G GRR/Elements/14-CA-b.1 - NPDES Permit Application + 1 + GRR/Elements/14-CA-b.10 - Did majority of RWQCB approve the permit + 10 + GRR/Elements/14-CA-b.11 - EPA Review of Adopted Permit + 11 + GRR/Elements/14-CA-b.12 - Were all EPA objections resolved + 12 + GRR/Elements/14-CA-b.13 - NPDES Permit issued + 13 +

462

Best Practices: Elements of a Federal Privacy Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Best Practices: Best Practices: Elements of a Federal Privacy Program Version 1.0 Sponsored By: Federal CIO Council Privacy Committee June 2010 Best Practices: Elements of a Federal Privacy Program June 2010 Page i Contents Acknowledgements __________________________________________________________________ ii Purpose ____________________________________________________________________________ 1 Introduction: Privacy Stewardship and Governance _________________________________________ 3 Element 1 -Leadership ________________________________________________________________ 6 Element 2 - Privacy Risk Management and Compliance Documentation _________________________ 9 Element 3 - Information Security _______________________________________________________ 14

463

Review of Selected Elements of Emergency Management at the Oak...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OVERSIGHT REVIEW OF SELECTED ELEMENTS OF EMERGENCY MANAGEMENT AT THE OAK RIDGE NATIONAL LABORATORY July 2011 i INDEPENDENT OVERSIGHT REVIEW OF SELECTED ELEMENTS OF EMERGENCY...

464

OSHA Rulemaking on Basic Program Elements for Federal Employee...  

Energy Savers (EERE)

OSHA Rulemaking on Basic Program Elements for Federal Employee Occupational Safety and Health Programs and Related Matters; 29 CFR 1960 OSHA Rulemaking on Basic Program Elements...

465

Elements of a Federal Privacy Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Elements of a Federal Privacy Program Elements of a Federal Privacy Program This document serves as a best practices guide to help federal organizations implement and sustain...

466

Compound and Elemental Analysis At Rye Patch Area (DOE GTP) ...  

Open Energy Info (EERE)

Compound and Elemental Analysis At Rye Patch Area (DOE GTP) Exploration Activity Details Location Rye Patch Area Exploration Technique Compound and Elemental Analysis Activity Date...

467

3800 Green Series Cost Elements | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(formerly EPP) Program 3800 Green Series Cost Elements 06112014 (Rev. 7) 3800 Green Series Cost Elements More Documents & Publications 1 OPAM Policy Acquisition Guides...

468

Compound and Elemental Analysis At Fort Bliss Area (DOE GTP)...  

Open Energy Info (EERE)

Compound and Elemental Analysis At Fort Bliss Area (DOE GTP) Exploration Activity Details Location Fort Bliss Area Exploration Technique Compound and Elemental Analysis Activity...

469

Rapporteur's Report - workshop on rare earth elements  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Trans-Atlantic Workshop on Rare Earth Elements and Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Materials for a Clean Energy Future Hosted by the MIT Energy Initiative, cambridge, Massachusetts december 3, 2010 Introduction The objective of the workshop was to exchange views and information on the material security challenges of rare earths and other elements critical for clean energy generation and use. This includes the description of current research topics around the supply chain and end uses, and to identify opportunities for Trans-Atlantic research cooperation. The workshop consisted of a series of brief presentations by researchers in the US and Europe, followed by a discussion of possible areas of collaboration proposed by the co-chairs. A list of the presentations and the agenda for the day is appended with this document.

470

Element Labs (Texas) | Open Energy Information  

Open Energy Info (EERE)

Element Labs (Texas) Element Labs (Texas) Jump to: navigation, search Name Element Labs Address 9701 Metric Blvd Place Austin, Texas Zip 78758 Sector Efficiency Product LED Producer Website http://www.elementlabs.com/ Coordinates 30.376797°, -97.715649° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":30.376797,"lon":-97.715649,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

471

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Details Activities (1) Areas (1) Regions (0) Abstract: Vein and alteration assemblages from eight Coso wells have been collected and their fluid-inclusion gases analyzed by quadrupole mass spectrometry. Four major types of alteration were sampled: 1) young calcite-hematite-pyrite veins; 2) wairakite or epidote veins and alteration that are spatially associated with deep reservoirs in the main field and eastern wells; 3) older sericite and pyrite wallrock alteration; and 4) stilbite-calcite veins that are common in cooler or marginal portions of

472

Patterns in the Cosmos Trace Evolution of the Universe | U.S. DOE Office of  

NLE Websites -- All DOE Office Websites (Extended Search)

Patterns in the Cosmos Trace Evolution of the Universe Patterns in the Cosmos Trace Evolution of the Universe High Energy Physics (HEP) HEP Home About Research Facilities Science Highlights Benefits of HEP Funding Opportunities Advisory Committees News & Resources Contact Information High Energy Physics U.S. Department of Energy SC-25/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3624 F: (301) 903-2597 E: sc.hep@science.doe.gov More Information » August 2013 Patterns in the Cosmos Trace Evolution of the Universe Detection of subtle polarization patterns in the Cosmic Microwave Background opens a new window on fundamental physics and cosmology. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of Stephen Hoover (SPT Team member)

473

A Novel Approach to Reduce Ray Tracing Simulation Times by Predicting Number or Rays  

Science Journals Connector (OSTI)

Abstract A ray tracer, specifically designed for concentrating solar power systems, has been developed at the Solar Thermal Energy Research Group (STERG). In most ray tracers a simulation runs until a number of rays, predefined by the user, have been traced. In a novel approach the raytracer uses a user defined tolerable error and confidence interval to predict and automatically trace the required number of rays for a simulation. This reduces computational time as only the minimum required number of rays are traced. This method has not been incorporated into any of the openly available ray tracers. The method and algorithm incorporated into the STERG raytracer are described here. As a validation test case the Eurodish and optimised field layout of Planta Solar 10 plant have been simulated.

S.J. Bode; P. Gauch; D. Griffith

2014-01-01T23:59:59.000Z

474

Catalyst for elemental sulfur recovery process  

DOE Patents (OSTI)

A catalytic reduction process is described for the direct recovery of elemental sulfur from various SO[sub 2]-containing industrial gas streams. The catalytic process provides high activity and selectivity, as well as stability in the reaction atmosphere, for the reduction of SO[sub 2] to elemental sulfur product with carbon monoxide or other reducing gases. The reaction of sulfur dioxide and reducing gas takes place over a metal oxide composite catalyst having one of the following empirical formulas: [(FO[sub 2])[sub 1[minus]n](RO)[sub n

Flytzani-Stephanopoulos, M.; Liu, W.

1995-01-24T23:59:59.000Z

475

Spectroscopy of element 115 decay chains  

SciTech Connect

A high-resolution a, X-ray and -ray coincidence spectroscopy experiment was conducted at the GSI Helmholtzzentrum fu r Schwerionenforschung. Thirty correlated a-decay chains were detected following the fusion-evaporation reaction 48Ca + 243Am. The observations are consistent with previous assignments of similar decay chains to originate from element Z = 115. The data includes first candidates of fingerprinting the decay step Mt --> Bh with characteristic X rays. For the first time, precise spectroscopy allows the derivation of excitation schemes of isotopes along the decay chains starting with elements Z > 112. Comprehensive Monte-Carlo simulations accompany the data analysis. Nuclear structure models provide a first level interpretation.

Rudolph, Dirk [Lund University, Sweden; Forsberg, U. [Lund University, Sweden; Golubev, P. [Lund University, Sweden; Sarmiento, L. G. [Lund University, Sweden; Yakushev, A. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Andersson, L.-L. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Di Nitto, A. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Duehllmann, Ch. E. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Gates, J. M. [Lawrence Berkeley National Laboratory (LBNL); Gregorich, K. E. [Lawrence Berkeley National Laboratory (LBNL); Gross, Carl J [ORNL; Hessberger, F. P. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Herzberg, R.-D [University of Liverpool; Khuyagbaatar, J. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Kratz, J. V. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Rykaczewski, Krzysztof Piotr [ORNL; Schaedel, M. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Aberg, S. [Lund University, Sweden; Ackermann, D. [GSI-Hemholtzzentrum fur Schwerionenforschung, Darmstadt, Germany; Block, M. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Brand, H. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Carlsson, B. G. [Lund University, Sweden; Cox, D. [University of Liverpool; Derkx, X. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Eberhardt, K. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Even, J. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Fahlander, C. [Lund University, Sweden; Gerl, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Jaeger, E. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kindler, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Krier, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kojouharov, I. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kurz, N. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Lommel, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Mistry, A. [University of Liverpool; Mokry, C. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Nitsche, H. [Lawrence Berkeley National Laboratory (LBNL); Omtvedt, J. P. [Paul Scherrer Institut, Villigen, Switzerland; Papadakis, P. [University of Liverpool; Ragnarsson, I. [Lund University, Sweden; Runke, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Schaffner, H. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Schausten, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Thoerle-Pospiech, P. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Torres, T. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Traut, T. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Trautmann, N. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Tuerler, A. [Paul Scherrer Institut, Villigen, Switzerland; Ward, A. [University of Liverpool; Ward, D. E. [Lund University, Sweden; Wiehl, N. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany

2013-01-01T23:59:59.000Z

476

Matrix elements for rotating Morse oscillators  

Science Journals Connector (OSTI)

In this paper formulas and recursion relations for the expectation values of the operators {1-exp[-a(r-re)]}n, (r-re)n, exp[-a(r-re)]n, and (r-re){exp[-a(r-re)]}n are derived for a rotating Morse oscillator. These equations can be used to calculate the diagonal (v=v, J=J) and off-diagonal (v?v, J?J) matrix elements. Asymptotic approximations for the diagonal elements of the (r-re)n operator, ?vJ?(r-re)?vJ? and ?vJ?(r-re)2?vJ?, are also obtained.

A. Requena; A. Lpez Pieiro; B. Moreno

1986-11-01T23:59:59.000Z

477

Atmospheric Trace Gases from the Carbon Dioxide Information Analysis Center (CDIAC)  

DOE Data Explorer (OSTI)

CDIAC products are indexed and searchable through a customized interface powered by ORNL's Mercury search engine. Products include numeric data packages, publications, trend data, atlases, models, etc. and can be searched for by subject area, keywords, authors, product numbers, time periods, collection sites, spatial references, etc. Some of the collections may also be included in the CDIAC publication, Trends Online: A Compendium of Global Change Data. Most data sets, many with numerous data files, are free to download from CDIAC's ftp area. The collections under the CDIAC heading of Atmospheric Trace Gases include: Atmospheric Carbon Dioxide, Atmospheric Methane, Atmospheric Carbon Monoxide, Atmospheric Hydrogen, Isotopes in Greenhouse Gases, Radionuclides, Aerosols, and Other Trace Gases.

478

Batch methods for enriching trace impurities in hydrogen gas for their further analysis  

DOE Patents (OSTI)

Provided herein are batch methods and devices for enriching trace quantities of impurities in gaseous mixtures, such as hydrogen fuel. The methods and devices rely on concentrating impurities using hydrogen transport membranes wherein the time period for concentrating the sample is calculated on the basis of optimized membrane characteristics, comprising its thickness and permeance, with optimization of temperature, and wherein the enrichment of trace impurities is proportional to the pressure ratio P.sub.hi/P.sub.lo and the volume ratio V.sub.1/V.sub.2, with following detection of the impurities using commonly-available detection methods.

Ahmed, Shabbir; Lee, Sheldon H.D.; Kumar, Romesh; Papdias, Dionissios D.

2014-07-15T23:59:59.000Z

479

Runtime Tracing of The Community Earth System Model: Feasibility and Benefits  

SciTech Connect

Community Earth System Models (CESM) is one of US's leading earth system modeling systems, which has over decades of development history and embraced by large, active user communities. In this paper, we first review the history of CESM software development and layout the general objectives of performance analysis. Then we present an offline global community land model simulation within the CESM framework to demonstrate the procedure of runtime tracing of CESM using the Vampir toolset. Finally, we explain the benefits of runtime tracing to the general earth system modeling community. We hope those considerations can also be beneficial to many other modeling research programs involving legacy high-performance computing applications.

Wang, Dali [ORNL] [ORNL; Domke, Jens [ORNL] [ORNL

2011-01-01T23:59:59.000Z

480

Oxyfuel CO2 compression: The gas phase reaction of elemental mercury and \\{NOx\\} at high pressure and absorption into nitric acid  

Science Journals Connector (OSTI)

Abstract Oxyfuel combustion is a technology which combusts coal in oxygen and recycled flue gas, producing a carbon dioxide rich flue gas for sequestration. Oxyfuel flue gas contains trace amounts of elemental mercury, which may corrode brazed aluminium heat exchangers used in the carbon dioxide purification system. International gas vendors have tested the use of the compression system to remove other flue gas impurities such as NOx; however, the reaction mechanism of mercury and its reaction products with \\{NOx\\} and nitric acid formed with condensed water vapour are unclear. This study used lab scale experiments to study the absorption of gaseous elemental mercury into nitric acid and the gas phase reaction between mercury and nitrogen dioxide formed from oxidised NO at pressures up to 25bar. It was observed that mercury has limited absorption into nitric acid and may partially desorb out of solution after depressurisation. On the other hand, mercury reacted readily with nitrogen dioxide (formed from nitric oxide oxidation at high pressure) in the gas phase. These gas phase reactions from the oxidation of nitric oxide to nitrogen dioxide to the subsequent oxidation of elemental mercury by nitrogen dioxide were predicted using existing global kinetic equations. The limited absorption of gaseous elemental mercury in nitric acid and significant oxidation of gaseous elemental mercury by nitrogen dioxide suggests that the primary removal step for elemental mercury is through the gas phase reaction. Oxyfuel compression circuits should therefore allow sufficient residence time for this gas phase reaction to occur.

Timothy Ting; Rohan Stanger; Terry Wall

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "trace elements cxs" from the National Library of EnergyBeta (NLEBeta).
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481

Nuclear astrophysics: the unfinished quest for the origin of the elements  

Science Journals Connector (OSTI)

Half a century has passed since the foundation of nuclear astrophysics. Since then, this discipline has reached its maturity. Today, nuclear astrophysics constitutes a multidisciplinary crucible of knowledge that combines the achievements in theoretical astrophysics, observational astronomy, cosmochemistry and nuclear physics. New tools and developments have revolutionized our understanding of the origin of the elements: supercomputers have provided astrophysicists with the required computational capabilities to study the evolution of stars in a multidimensional framework; the emergence of high-energy astrophysics with space-borne observatories has opened new windows to observe the Universe, from a novel panchromatic perspective; cosmochemists have isolated tiny pieces of stardust embedded in primitive meteorites, giving clues on the processes operating in stars as well as on the way matter condenses to form solids; and nuclear physicists have measured reactions near stellar energies, through the combined efforts using stable and radioactive-ion beam facilities.This review provides comprehensive insight into the nuclear history of the Universe and related topics: starting from the Big Bang, when the ashes from the primordial explosion were transformed to hydrogen, helium and a few trace elements, to the rich variety of nucleosynthesis mechanisms and sites in the Universe. Particular attention is paid to the hydrostatic processes governing the evolution of low-mass stars, red giants and asymptotic giant-branch stars, as well as to the explosive nucleosynthesis occurring in core-collapse and thermonuclear supernovae, ?-ray bursts, classical novae, x-ray bursts, superbursts and stellar mergers.

Jordi Jos; Christian Iliadis

2011-01-01T23:59:59.000Z

482

The chemical behavior of the transuranic elements and the barrier function in natural aquifer systems  

SciTech Connect

In a geological repository for long-lived radioactive wastes, such as actinides and certain fission products, most of the stored radionuclides remain immobile in the particular geological formation. If any of these could possibly become mobile, only trace concentrations of a few radionuclides would result. Nevertheless, with an inventory in the repository of many tonnes of transuranic elements, the amounts that could disperse cannot be neglected. A critical assessment of the chemical behavior of these nuclides, especially their migration properties in the aquifer system around the repository site, is mandatory for analysis of the long-term safety. The chemistry requited for this includes many geochemical multicomponent reactions that are so far only partially understood and [which] therefore can be quantified only incompletely. A few of these reactions have been discussed in this paper based on present knowledge. If a comprehensive discussion of the subject is impossible because of this [lack of information], then an attempt to emphasize the importance of the predominant geochemical reactions of the transuranic elements in various aquifer systems should be made.

Jewett, J.R.

1997-09-17T23:59:59.000Z

483

ANATEXIS OF JUVENILE MAFIC TO INTERMEDIATE CRUST CONSTRAINTS FROM MAJOR AND TRACE ELEMENT AND SR, ND, PB ISOTOPES OF DIORITES TO GRANITES (DAMARA OROGEN, NAMBIA)  

Science Journals Connector (OSTI)

...to the Tsomtsaub pluton (Map sheet 2114-Omaruru, Geol. Surv...Palaeozoic. Ministry of Mines and Energy, Geological Survey of Namibia...basaltic crust: the Cordillera Blance Batholith, Peru. Journal of...Namibia, Ministry of Mines and Energy Memoir, 14, 1-106. Zorpi...

S. JUNG; J. BERNDT; A. STRACKE; F. HAUFF; N. KASTEK

484

Minerals and potentially hazardous trace elements in marine oil shale: new insights from the Shengli River North surface mine, northern Tibet, China  

Science Journals Connector (OSTI)

The Shengli RiverChangshe Mountain oil shale zone, including the Changliang MountainShengli River oil shale, the Shengli River North oil shale, and the Changshe Mountain oil shale, represents potentially the la...

Xiugen Fu; Jian Wang; Fuwen Tan; Xinglei Feng

2014-08-01T23:59:59.000Z

485

Application of neutron activation analysis and high resolution x-ray spectrometry for the determination of trace quantities of elements with short-lived activation products  

E-Print Network (OSTI)

Conversion Interferences and Errors 3, PROCEDURES AND EXPERIMENTAL SETUP Sample Preparation Pneumatic Sample Transfer System Sample Irradiation X-ray Spectrometry Data Reduction 4. DISCUSSION AND RESULTS System Analysis Analysis Problems.... C. Roentgen made the classic observation that a highly penatrative radiation, unknown at that time, was produced when fast electrons impinged on matter. This radiation, which h called x-rays, was being studied in all parts of the world less than...

Marshall, John Richard

1974-01-01T23:59:59.000Z

486

Trace-element analysis of individual synthetic and natural fluid inclusions with synchrotron radiation XRF using Monte Carlo simulations for quantification  

Science Journals Connector (OSTI)

...mum thick NIST 612 material shielded by a bottom...Fig. 10. Ternary diagrams showing relative...Gerald Falkenberg, Thor Hansteen, Frank...Altherr for editorial handling. References Bodnar...glass reference materials. Geostandard Newsletter...certified Reference Material SRM 610-611...

Karen RICKERS; Rainer THOMAS; Wilhelm HEINRICH

487

Trace Element Geochemistry of Magnetite and Its Relationship to Cu-Bi-Co-Au-Ag-U-W Mineralization in the Great Bear Magmatic Zone, NWT, Canada  

Science Journals Connector (OSTI)

...14 p., doi: 10.1029/1999GC000026 . Li Y.H. , 2000, A compendium of geochemistry: From solar nebula to the human brain: Princeton, Princeton University Press, 475 p. Liu W. , Borg S.J., Testemale D., Etschmann B., Hazemann J.L...

P. Acosta-Gngora; S. A. Gleeson; I. M. Samson; L. Ootes; L. Corriveau

488

Impact of Municipal Solid Waste (MSW) Quality on the Behavior of Alkali Metals and Trace Elements during Combustion: A Thermodynamic Equilibrium Analysis  

Science Journals Connector (OSTI)

Light, thermal- and bacterial-resistant, and inexpensive leathers, especially in the footwear industry, are obtained by the Cr tanning method. ... The selected waste items are representing the major combustible fractions found in MSW, i.e. paper, plastic, textile, and biogenic materials (both food and biomass), but also the other waste fraction (a mixed and poorly defined fraction). ... Pedersen et al.(6) studies six different waste fractions separately under different operational conditions in a full-scale incinerator: NaCl (road salt), household batteries, automotive shredder waste (rubber and plastics), Cu?Cr?As (CCA)-impregnated wood, PVC, and shoes (leather mainly). ...

Michae?l Becidan; Lars Srum; Daniel Lindberg

2010-05-21T23:59:59.000Z

489

A Full-scale Study on the Partitioning of Trace Elements in Municipal Solid Waste IncinerationEffects of Firing Different Waste Types  

Science Journals Connector (OSTI)

The changes in waste composition were applied by adding (one-by-one): dedicated waste fractions, comprising road salt (NaCl), household batteries, automotive shredder waste, CCA (copper?chromate?arsenate)-impregnated wood, PVC, and, shoes, to a base-load waste. ... What is left after removing recyclables from vehicles is shredded. ... Automotive shredder waste (residues) is then the light shredder fraction from the airflow separator that separates it from the heavier metallic fraction, which is fully recyclable as a secondary raw material. ...

Anne J. Pedersen; Flemming J. Frandsen; Christian Riber; Thomas Astrup; Sren N. Thomsen; Kasper Lundtorp; Leif F. Mortensen

2009-03-23T23:59:59.000Z

490

Neogene Low-latitude Seasonal Environmental Variations: Stable Isotopic and Trace Elemental Records in Mollusks from the Florida Platform and the Central American Isthmus  

E-Print Network (OSTI)

to examine low-latitude temperature and salinity variations recorded in Plio-Pleistocene (3.5-1.6 Ma) fossils from western Florida during periods of high-latitude warming and "global" cooling. The middle Pliocene Pinecrest Beds (Units 7 and 4...

Tao, Kai

2012-10-19T23:59:59.000Z

491

Distribution of toenail selenium levels in young adult Caucasians and African Americans in the United States: The CARDIA Trace Element Study  

SciTech Connect

Background: Data on selenium (Se) levels in American young adults, especially in African Americans, are lacking. Objective: This study presented toenail Se distributions in American young adults of both genders, including both Caucasians and African Americans; and explored potential predictors of toenail Se levels. Data and methods: Data from the Coronary Artery Risk Development in Young Adults study among 4252 American young adults, aged 20-32 in 1987 was used to examine toenail Se levels by instrumental neutron-activation analysis. The distribution of Se levels was described and multivariable linear regression was used to examine potential modifiers of toenail Se concentration within ethnicity-gender subgroups. Results: The geometric mean of toenail Se in this cohort was 0.844 {mu}g/g (95% CI, 0.840-0.849 {mu}g/g) and the median was 0.837 {mu}g/g (95% CI, 0.833-0.844 {mu}g/g). Median levels from lowest to highest quintile were 0.691, 0.774, 0.838, 0.913 and 1.037 {mu}g/g. Se levels varied geographically, and were generally in accordance with its concentrations in local soil. Males, African Americans, current smokers, heavy drinkers and less educated participants were more likely to have low Se levels. Conclusion: This study suggests that toenail Se levels vary geographically depending on soil Se concentrations. In addition to gender, ethnicity and education level, smoking status and alcohol consumption are two important indicators of Se status since they are modifiable lifestyle factors. Findings from this study might aid public health professionals in identifying people at relatively high or low Se levels, so that chronic disease prevention efforts can be directed toward these subgroups. - Research highlights: {yields} Average of toenail Se levels in this cohort was 0.844 {mu}g/g (95% CI, 0.840-0.849 {mu}g/g). {yields} Toenail Se levels vary geographically depending on soil Se concentrations. {yields} Males, African Americans and less educated participants have low Se levels. {yields} Smoking status and alcohol consumption are two important indicators of Se status.

Xun, Pengcheng; Bujnowski, Deborah [Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, 2221 McGavran-Greenberg, Campus Box: 7461, Chapel Hill, NC (United States) [Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, 2221 McGavran-Greenberg, Campus Box: 7461, Chapel Hill, NC (United States); Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC (United States); Liu, Kiang [Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL (United States)] [Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL (United States); Steve Morris, J. [Research Reactor Center, University of Missouri-Columbia, Columbia, MO (United States)] [Research Reactor Center, University of Missouri-Columbia, Columbia, MO (United States); Guo, Zhongqin [Department of Epidemiology and Biostatistics, School of Public Health, Ningxia Medical University, Ningxia (China) [Department of Epidemiology and Biostatistics, School of Public Health, Ningxia Medical University, Ningxia (China); Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, 2221 McGavran-Greenberg, Campus Box: 7461, Chapel Hill, NC (United States); He, Ka, E-mail: kahe@unc.edu [Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, 2221 McGavran-Greenberg, Campus Box: 7461, Chapel Hill, NC (United States) [Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, 2221 McGavran-Greenberg, Campus Box: 7461, Chapel Hill, NC (United States); Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC (United States)

2011-05-15T23:59:59.000Z

492

DISSOLVED CONCENTRATION LIMITS OF RADIOACTIVE ELEMENTS  

SciTech Connect

The purpose of this study is to evaluate dissolved concentration limits (also referred to as solubility limits) of elements with radioactive isotopes under probable repository conditions, based on geochemical modeling calculations using geochemical modeling tools, thermodynamic databases, field measurements, and laboratory experiments. The scope of this modeling activity is to predict dissolved concentrations or solubility limits for 14 elements with radioactive isotopes (actinium, americium, carbon, cesium, iodine, lead, neptunium, plutonium, protactinium, radium, strontium, technetium, thorium, and uranium) important to calculated dose. Model outputs for uranium, plutonium, neptunium, thorium, americium, and protactinium are in the form of tabulated functions with pH and log (line integral) CO{sub 2} as independent variables, plus one or more uncertainty terms. The solubility limits for the remaining elements are either in the form of distributions or single values. The output data from this report are fundamental inputs for Total System Performance Assessment for the License Application (TSPA-LA) to determine the estimated release of these elements from waste packages and the engineered barrier system. Consistent modeling approaches and environmental conditions were used to develop solubility models for all of the actinides. These models cover broad ranges of environmental conditions so that they are applicable to both waste packages and the invert. Uncertainties from thermodynamic data, water chemistry, temperature variation, and activity coefficients have been quantified or otherwise addressed.

NA

2004-11-22T23:59:59.000Z

493

Knowledge of Language: Its Elements and Origins  

Science Journals Connector (OSTI)

2 October 1981 research-article Knowledge of Language: Its Elements and Origins...language is based on the assumption that knowledge of language can be properly characterized...concepts are those of 'grammar' and 'knowledge of grammar'. The concepts of 'language...

1981-01-01T23:59:59.000Z

494

RECENT WORK WITH THE TRANSURANIUM ELEMENTS  

Science Journals Connector (OSTI)

...out materials from the first test thermonuclear explosion, the "Mike" shot which...chemical investigations were completed. Thermonuclear explosions do offer good possibilities...elements in 94 96 98 W 102 104 106 108 110 thermonuclear explosions is an ATOMIC NUMBER interesting...

Glenn T. Seaborg

1959-01-01T23:59:59.000Z

495

X-Ray Identification of Element 104  

Science Journals Connector (OSTI)

The daughter x-ray identification technique has been applied to the identification of element 104. The characteristic K-series x rays from the ?-decay daughter isotope, nobelium (Z=102), have been observed in coincidence with ? particles from the decay of 4.5-sec 104257, thus providing an unequivocal determination of the parent atomic number, Z=104.

C. E. Bemis; Jr.; R. J. Silva; D. C. Hensley; O. L. Keller; Jr.; J. R. Tarrant; L. D. Hunt; P. F. Dittner; R. L. Hahn; C. D. Goodman

1973-09-03T23:59:59.000Z

496

Chaotic Boltzmann machines with two elements  

E-Print Network (OSTI)

In this brief note, we show that chaotic Boltzmann machines truly yield samples from the probabilistic distribution of the corresponding Boltzmann machines if they are composed of only two elements. This note is an English translation (with slight modifications) of the article originally written in Japanese [H. Suzuki, Seisan Kenkyu 66 (2014), 315-316].

Hideyuki Suzuki

2015-01-28T23:59:59.000Z

497

Seaborg Discusses Transuranium Elements in Howe Lecture  

Science Journals Connector (OSTI)

Seaborg Discusses Transuranium Elements in Howe Lecture ... THE isolation of a pure compound of americium in weighable amounts and the natural occurrence of plutonium in carnotite were announced by Glenn T. Seaborg at the second annual Harrison Howe Lecture of the Rochester Section of the AMERICAN CHEMICAL SOCIETY on Nov. 18. ...

1946-12-10T23:59:59.000Z

498

A NONCONFORMING MIXED FINITE ELEMENT METHOD FOR ...  

E-Print Network (OSTI)

of the time-harmonic Maxwell's equations in a three-dimensional, bounded ... tric conductivity from measurements of natural electric and magnetic fields on the .... Let (?s(?) s) and (?s(?) s) indicate standard, complex Sobolev spaces ..... continuity constraints at the centroids of the interfaces between adjacent elements:.

1910-10-30T23:59:59.000Z

499

CONVERGENCE OF A MULTISCALE FINITE ELEMENT METHOD ...  

E-Print Network (OSTI)

Mar 3, 1999 ... In this paper, we consider solving a class of two-dimensional, second order, el- liptic boundary ... a standard finite element or finite difference method is used to solve the equations, the degrees of ..... terfaces. The result depends on the geometry of the jump interfaces. ...... a measure of the relative error.

1999-04-17T23:59:59.000Z

500

Near-field diffractive elements Daniel Marks  

E-Print Network (OSTI)

by a near-field diffractive element (NDE) that scatters the high-spatial-frequency components of the field susceptibility r , and the NDE is described by the susceptibilty r . The field obeys the equation 2 U r +k0 2 U r to first order in both the NDE and the sample susceptibilities. It is assumed that the background terms

Bhargava, Rohit