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Note: This page contains sample records for the topic "reid miner ncasi" 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.


1

Forest Carbon and Biomass Energy – LCA Issues and Challenges  

Broader source: Energy.gov [DOE]

Breakout Session 2D—Building Market Confidence and Understanding II: Carbon Accounting and Woody Biofuels Forest Carbon and Biomass Energy – LCA Issues and Challenges Reid Miner, Vice President, NCASI

2

Secretary Chu, Senator Reid Announce Department of Energy Conditional...  

Energy Savers [EERE]

Secretary Chu, Senator Reid Announce Department of Energy Conditional Commitment for a Loan Guarantee for Nevada Geothermal Project Secretary Chu, Senator Reid Announce Department...

3

Ermakov-Lewis Invariants and Reid Systems  

E-Print Network [OSTI]

Reid's m'th-order generalized Ermakov systems of nonlinear coupling constant alpha are equivalent to an integrable Emden-Fowler equation. The standard Ermakov-Lewis invariant is discussed from this perspective, and a closed formula for the invariant is obtained for the higher-order Reid systems (m\\geq 3). We also discuss the parametric solutions of these systems of equations through the integration of the Emden-Fowler equation and present an example of a dynamical system for which the invariant is equivalent to the total energy

Stefan C Mancas; Haret C Rosu

2014-07-05T23:59:59.000Z

4

Reid, Wisconsin: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to: navigation, searchVirginia Blue Ridge And Piedmont Provinces |Rehobeth, Alabama:Reid,

5

Reid Rosnick/DC/USEPA/US 10/25/2012 11:54 AM  

E-Print Network [OSTI]

EPA-694 Reid Rosnick/DC/USEPA/US 10/25/2012 11:54 AM To Philip Egidi cc bcc Subject Re: Subpart W Pennsylvania Ave., NW Washington, DC 20460 202.343.9563 rosnick.reid@epa.gov -----Philip Egidi/DC/USEPA/US wrote: ----- To: Reid Rosnick/DC/USEPA/US@EPA From: Philip Egidi/DC/USEPA/US Date: 10/25/2012 11:41AM Cc

6

Revisiting Bug Triage and Resolution Practices Olga Baysal, Reid Holmes, and Michael W. Godfrey  

E-Print Network [OSTI]

Revisiting Bug Triage and Resolution Practices Olga Baysal, Reid Holmes, and Michael W. Godfrey part of the software development process. In large software projects such as Eclipse or Firefox

Godfrey, Michael W.

7

Secretaries Chu and Salazar will Join Senator Reid to Make Solar...  

Broader source: Energy.gov (indexed) [DOE]

Ken Salazar and Senate Majority Leader Harry Reid will make an announcement regarding job creation and solar energy development at the Nevada Test Site. Nevada stands to be the...

8

A Fast Relighting Engine for Interactive Cinematic Lighting Design Reid Gershbein Pat Hanrahan  

E-Print Network [OSTI]

A Fast Relighting Engine for Interactive Cinematic Lighting Design Reid Gershbein Pat Hanrahan Stanford University Abstract We present new techniques for interactive cinematic lighting design of complex both the lighting and texturing units of the graphics hardware. A similar factorization is used

Stanford University

9

A Review of "Sir Thomas Browne: The World Proposed" edited by Reid Barbour and Claire Preston  

E-Print Network [OSTI]

passage into what is surely one of the most important topics for readers of Milton. Reid Barbour and Claire Preston, eds. Sir Thomas Browne: The World Proposed. Oxford: Oxford University Press, 2008. xii + 368 pp. + 3 illus. $120.00. Review by joseph...

Black, Joseph

2011-01-01T23:59:59.000Z

10

Reid Rosnick/DC/USEPA/US 10/05/2010 06:37 AM  

E-Print Network [OSTI]

Association (WMA) is very concerned about claims that uranium mining #12;and processing may contribute/COTTER URANIUM MILLCAĂ?ON CITY, FREMONT COUNTY, COLORADO EPA FACILITY ID: COD042167585 SEPTEMBER 9, 2010:49:11 AMMr. Rosnick The Wyoming Mining As... From: "Marion Loomis" To: Reid Rosnick

11

AN OVERVIEW OF COMPOSITE LIKELIHOOD METHODS Cristiano Varin, Nancy Reid and David Firth  

E-Print Network [OSTI]

1 AN OVERVIEW OF COMPOSITE LIKELIHOOD METHODS Cristiano Varin, Nancy Reid and David Firth Ca to the development of the theory, and the current state of knowledge on efficiency and robustness of composite on the topic of Composite Likelihood in April, 2008. The workshop was prompted by the rapidly increasing

Reid, Nancy

12

Mining Usage Data and Development Artifacts Olga Baysal, Reid Holmes, and Michael W. Godfrey  

E-Print Network [OSTI]

Mining Usage Data and Development Artifacts Olga Baysal, Reid Holmes, and Michael W. Godfrey Software Architecture Group (SWAG) David R. Cheriton School of Computer Science, University of Waterloo {obaysal, rtholmes, migod}@uwaterloo.ca Abstract--Software repository mining techniques generally focus

Godfrey, Michael W.

13

Mining Modern Repositories with Elasticsearch Oleksii Kononenko, Olga Baysal, Reid Holmes, and Michael W. Godfrey  

E-Print Network [OSTI]

Mining Modern Repositories with Elasticsearch Oleksii Kononenko, Olga Baysal, Reid Holmes and highlight its strengths and weaknesses for performing modern mining software repositories research. Categories and Subject Descriptors D.2.3 [Software Engineering]: Coding Tools and Tech- niques General Terms

Godfrey, Michael W.

14

On the Stability of Web Crawling and Web Reid Anderson1  

E-Print Network [OSTI]

On the Stability of Web Crawling and Web Search Reid Anderson1 , Christian Borgs1 , Jennifer Chayes moti- vated by web crawling. We introduce a notion of stable cores, which is the set of web pages that are usually contained in the crawling buffer when the buffer size is smaller than the total number of web

Chaudhuri, Surajit

15

Designer femtosecond pulses using adaptive J. Garduo-Meja, A. H. Greenaway and D. T. Reid  

E-Print Network [OSTI]

.5540) Pulse shaping , (320.7100) Ultrafast measurements References and Links 1. A. Weiner, "Pulse shapingDesigner femtosecond pulses using adaptive optics J. Garduño-Mejía, A. H. Greenaway and D. T. Reid Ultrafast Optics Group, Physics, David Brewster Building, School of Engineering and Physical Sciences

16

FRP Dowels for Concrete Pavements Darren Eddie, Junior Structural Engineer, Reid Crowther & Partners;  

E-Print Network [OSTI]

testing ofGFRP and steel dowels using a model of a concrete pavement slab joint subjected to static= L FRP Dowels for Concrete Pavements By Darren Eddie, Junior Structural Engineer, Reid Crowther - Introduction Joints are used in concrete pavements in order to control cracking due to thermal

17

A review of "The Works of Lucy Hutchinson" edited by Reid Barbour and David Norbrook  

E-Print Network [OSTI]

exercise in textual engagement. Reid Barbour and David Norbrook, eds. #31;e Works of Lucy Hutchinson. Volume I: Translation of Lucretius. #18; parts. Latin text ed. by Maria Cristina Zerbino. Oxford: Oxford University Press, #18;#17;#16;#18;. cxlvi + #31... of the books of her translation. #2;ese are each prefaced by an argument and juxtaposed with the Latin text that she used, prepared by Maria Cristina Zerbino. #2;e translation appears on the right hand page and the Latin on the left. #2;e texts...

Caldwell, Tanya

2013-01-01T23:59:59.000Z

18

The Secret Life of Patches: A Firefox Case Study Olga Baysal, Oleksii Kononenko, Reid Holmes, and Michael W. Godfrey  

E-Print Network [OSTI]

The Secret Life of Patches: A Firefox Case Study Olga Baysal, Oleksii Kononenko, Reid Holmes future community contri- butions. Keywords-Open source software, code review, patch lifecycle. I. INTRODUCTION Code review is a key element of any mature software development process. It is particularly

Godfrey, Michael W.

19

A SEARCH FOR BINARY SYSTEMS AMONG THE NEAREST L DWARFS1 I. Neill Reid and E. Lewitus  

E-Print Network [OSTI]

@astro.psu.edu Kelle L. Cruz2 Department of Astrophysics, American Museum of Natural History, Central Park West at 79th resolution images of 52 ultracool dwarfs in the immediate solar neighborhood. Nine systems are resolved of the immediate solar neighborhood (Reid & Cruz 2002), concentrating, in particular, on ultracool dwarfs (spectral

Burgasser, Adam J.

20

EMSL - minerals  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

minerals en Reorientation of the ‘free OH’ group in the top-most layer of airwater interface of sodium fluoride aqueous http:www.emsl.pnl.govemslwebpublications...

Note: This page contains sample records for the topic "reid miner ncasi" 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

Written by: Al Hansen, University of Illinois at Urbana-Champaign Also written by: Robert Hornbaker, Qin Zhang, John Reid, Loren Bode  

E-Print Network [OSTI]

WD tractor Rated power (gross engine power) 316 kW (425 hp) xE Diesel On-Farm Evaluation Project Hornbaker, Qin Zhang, John Reid, Loren Bode Date: 08/4/00 Project Title: Evaluation of E diesel representatives in the middle of February, 2000, evaluation of E Diesel commenced at the beginning of April, 2000

Illinois at Urbana-Champaign, University of

22

Are lemming winter nest counts a good index of population density? CHARLES J. KREBS,* FREDERIC BILODEAU, DONALD REID, GILLES GAUTHIER, ALICE J. KENNEY, SCOTT GILBERT,  

E-Print Network [OSTI]

ÂŽDEÂŽRIC BILODEAU, DONALD REID, GILLES GAUTHIER, ALICE J. KENNEY, SCOTT GILBERT, DAVID DUCHESNE, AND DEBORAH J at Komakuk Beach (69u35.19N, 140u11.29W) on the north Yukon coast; at Herschel Island w w w . m a m m a l o g

Krebs, Charles J.

23

A Study of Educational Simulations Part II Interface W. K. Adams, S. Reid, R. LeMaster, S. B. McKagan, K. K. Perkins, M. Dubson and  

E-Print Network [OSTI]

simulations for teaching and learning physic, chemistry and physical science. 2 #12;Team, 2006). This analysis on the general features of a simulation that are most important for achieving engagement and learning. HereA Study of Educational Simulations Part II ­ Interface Design W. K. Adams, S. Reid, R. LeMaster, S

Colorado at Boulder, University of

24

DRAFT Subpart W Quarterly Call April 3, 2013 EPA: Reid Rosnick (ORIA), Angelique Diaz (Region 8), Susan Stahle (OGC)  

E-Print Network [OSTI]

that there is no quality of participation by stakeholder. Sarah Fields: Mentions an open-pit uranium mine associated with a proposed heap leach facility. Asks if open-pit uranium mines will be revisited to address the need Dunn, (CCAT), Sarah Fields (Uranium Watch) Other Travis Stills (Energy Minerals Law Center), Darrell

25

MINERAL COUNTY COMMISSIONERS  

Broader source: Energy.gov (indexed) [DOE]

S.W. Washington, DC 20585 Dear Sirs: Attached are the comments for modification of the Price-Anderson Act Notice of Inquiry(NOI) provided to the Board of Mineral County...

26

Engineering and Mineral Resources  

E-Print Network [OSTI]

News ????????????????? Âź College of Engineering and Mineral Resources Winter 2008 table of contents. . . . . . . . . . . . . . . . . . . . 7 wvCROSSROADS DepartmentofCivilandEnvironmentalEngineering Civil engineering exchange program and environmental engineering with a focus in transportation will have the opportunity to study abroad as part

Mohaghegh, Shahab

27

Mineral Rights and Proceeds (Nebraska)  

Broader source: Energy.gov [DOE]

This section contains provisions which determine when mineral rights are presumed to be abandoned by property owners.

28

Investigation of Mineral Transformations in Wet Supercritical...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mineral Transformations in Wet Supercritical CO2 by Electron Microscopy. Investigation of Mineral Transformations in Wet Supercritical CO2 by Electron Microscopy. Abstract: The...

29

Universal ripper miner  

DOE Patents [OSTI]

A universal ripper miner used to cut, collect and transfer material from an underground mine working face includes a cutter head that is vertically movable in an arcuate cutting cycle by means of drive members, such as hydraulically actuated pistons. The cutter head may support a circular cutter bit having a circular cutting edge that may be indexed to incrementally expose a fresh cutting edge. An automatic indexing system is disclosed wherein indexing occurs by means of a worm gear and indexing lever mechanism. The invention also contemplates a bi-directional bit holder enabling cutting to occur in both the upstroke and the downstroke cutting cycle. Another feature of the invention discloses multiple bits arranged in an in-line, radially staggered pattern, or a side-by-side pattern to increase the mining capacity in each cutting cycle. An on-board resharpening system is also disclosed for resharpening the cutting edge at the end of cutting stroke position. The aforementioned improvement features may be used either singly, or in any proposed combination with each other.

Morrell, Roger J. (Bloomington, MN); Larson, David A. (Minneapolis, MN)

1991-01-01T23:59:59.000Z

30

Matthew E. Reid Curriculum Vitae  

E-Print Network [OSTI]

-harmonic generation from InAs: Bulk vs surface electric field induced contributions. Physical Review B. 72: 0352011 - 2005, University of Alberta Ph.D. in the Department of Electrical and Computer Engineering Title - 2001, University of Alberta M. Sc. program in the Department of Electrical and Computer Engineering

Reid, Matthew

31

Curriculum Vitae Nancy Margaret Reid  

E-Print Network [OSTI]

Address: Department of Statistics University of Toronto Room 6019, 100 St. George Street Toronto, Ontario.D. Stanford University Thesis: "Influence functions for censored data" Supervisor: R.G. Miller, Jr. Employment 2007- Canada Research Chair Statistics University of Toronto 2003- University Professor Statistics

Reid, Nancy

32

Reid Industries | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to: navigation, searchVirginia Blue Ridge And Piedmont Provinces |Rehobeth, Alabama:

33

A List of Kansas Minerals  

E-Print Network [OSTI]

that mineral occurs. I t i s a i found associated with A n g l e s i t e t I t i s reported from Cherokee county. C e l e s t i t e (720). Orthorhombic, composition strontium sulphate Sr S0*j. This mineral has been found q u i t e s p a r i n g l y i n...Master Th e s i s Geology Grov e r , C h a r l e s H. 1895 L i s t of Kansas m i n e r a l s * A l i s t of Kansas Minerals with "brief notes on the^cr^stjalogr&phio (form, chemical composition, and the p r i n c i p a l l o c a l i t i e s f...

Grover, Charles H.

1895-01-01T23:59:59.000Z

34

Minerals handbook 1984/1985  

SciTech Connect (OSTI)

This handbook consists of statistical tables giving a profile of almost 50 strategic minerals. A compendium of statistics on reserves, production, and trade, the book provides a view of international supply and demand. Information is complied here which is otherwise available only through scattered sources. The 1984/1985 edition has been updated and expanded. Reserves have been recalculated on the new basis instituted by the United States. Seven new minerals have been added: arsenic, berrylium, bismuth, boron, gallium, rare earths, and tellurium. Growth rates of consumption have been extended and the section on end use of patterns for each mineral now shows the percentage for Europe and Japan as well as the U.S.

Crowson, P.

1985-01-01T23:59:59.000Z

35

Mineral County Secondary Data Analysis  

E-Print Network [OSTI]

prevalence (Heart Attack) 4.0% 4.1% 6.0% All Sites Cancer 466.5 455.5 543.2 1 Community Health Data, MT2 1. Cancer 2. Heart Disease 3. Unintentional Injuries**, CLRD*, Cerebrovascular Disease 1. Cancer 2. Heart Disease 3.CLRD* 1. Heart Disease 2. Cancer 3. CLRD* #12; Mineral County

Maxwell, Bruce D.

36

2006 Minerals Yearbook RARE EARTHS  

E-Print Network [OSTI]

parts per million (ppm), to thulium and lutetium, the least abundant rare-earth elements at about 0 and malleable, similar in density to titanium. The elemental forms of rare earths are iron gray to silvery2006 Minerals Yearbook RARE EARTHS U.S. Department of the Interior U.S. Geological Survey May 2008

37

Institute for Mineral and Energy  

E-Print Network [OSTI]

. The University of Adelaide is unique within Australia for its strong research and teaching groups in geology fields of research are: · Earth Sciences ­ geology; geochemistry; geo-sequestration; geophysics to 10 per cent per annum while other minerals such as uranium and rare earth elements will become

38

LOW TEMPERATURE GEOTHERMAL MINERAL RECOVERY PROGRAM 02/11/2014...  

Energy Savers [EERE]

LOW TEMPERATURE GEOTHERMAL MINERAL RECOVERY PROGRAM 02112014 LOW TEMPERATURE GEOTHERMAL MINERAL RECOVERY PROGRAM 02112014 mineral-webinar.pdf More Documents & Publications LOW...

39

Mineral Supplementation of Beef Cows in Texas  

E-Print Network [OSTI]

Nutrient balance is the key to any effective nutrition program, especially where trace minerals are concerned. Many factors cannot be optimized when mineral intake is not properly balanced. Recommendations are given for the producer....

Herd, Dennis B.

1997-06-04T23:59:59.000Z

40

Mineral Transformation and Biomass Accumulation Associated With  

E-Print Network [OSTI]

Mineral Transformation and Biomass Accumulation Associated With Uranium Bioremediation at Rifle transformation and biomass accumulation, both of which can alter the flow field and potentially bioremediation to understand the biogeochemical processes and to quantify the biomass and mineral transformation/ accumulation

Hubbard, Susan

Note: This page contains sample records for the topic "reid miner ncasi" 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

Remote Sensing of Soils, Minerals, and Geomorphology  

E-Print Network [OSTI]

,Remote Sensing of Soils, Minerals, and GeomorphologyMinerals, and Geomorphology · Soil is unconsolidated material). ·· SoilSoil is unconsolidated material at the surface of the Earth thatis unconsolidated material

42

Mineral Resource Information System for Field Lab in the Osage Mineral Reservation Estate  

SciTech Connect (OSTI)

The Osage Mineral Reservation Estate is located in Osage County, Oklahoma. Minerals on the Estate are owned by members of the Osage Tribe who are shareholders in the Estate. The Estate is administered by the Osage Agency, Branch of Minerals, operated by the U.S. Bureau of Indian Affairs (BIA). Oil, natural gas, casinghead gas, and other minerals (sand, gravel, limestone, and dolomite) are exploited by lessors. Operators may obtain from the Branch of Minerals and the Osage Mineral Estate Tribal Council leases to explore and exploit oil, gas, oil and gas, and other minerals on the Estate. Operators pay a royalty on all minerals exploited and sold from the Estate. A mineral Resource Information system was developed for this project to evaluate the remaining hydrocarbon resources located on the Estate. Databases on Microsoft Excel spreadsheets of operators, leases, and production were designed for use in conjunction with an evaluation spreadsheet for estimating the remaining hydrocarbons on the Estate.

Carroll, H.B.; Johnson, William I.

1999-04-27T23:59:59.000Z

43

Mineral Test Hole Regulatory Act (Tennessee)  

Broader source: Energy.gov [DOE]

The Mineral Hole Regulatory Act is applicable to any person (individual, corporation, company, association, joint venture, partnership, receiver, trustee, guardian, executor, administrator,...

44

Minerals and Mining Program (South Dakota)  

Broader source: Energy.gov [DOE]

The Minerals and Mining Program has the authority to oversee mining activities in the state and issue regulations pertaining to the permitting and environmental impact mitigation of, and...

45

The mission of the USGS National Minerals Information Center (formerly  

E-Print Network [OSTI]

, and in the development of strate- gies to maintain a competitive position in the global economy. The Center's mineralsThe mission of the USGS National Minerals Information Center (formerly the Minerals Information of and demand for minerals and mineral materials essential to the U.S. economy and national security. Examples

Torgersen, Christian

46

Energy and Mineral Development in Indian Country  

Broader source: Energy.gov [DOE]

The Rocky Mountain Mineral Law Foundation is hosting the Special Institute on Energy and Mineral Development in Indian Country. This two-day conference will cover laws, policies, and practices regarding natural resources development in Indian Country and how they've evolved in the recent years.

47

Chapter 15 Mineral Resources and the Environment  

E-Print Network [OSTI]

Materials produced from natural gas or crude oil, such as plastics Fertilizers for agriculture, phosphate tons per year. Gold and silver have annual consumption rates of 10,000 tons or less. Worldwide consumption of minerals #12; The fundamental problem associated with the availability of mineral resources

Pan, Feifei

48

New Mexico Bureau Mines and Mineral  

E-Print Network [OSTI]

Number22 - 1999 New Mexico Bureau of Mines and Mineral Resources a division of Nei~, Mexico Tech forsandblasting five times! ThisIssue Earth Briefs-Better age estimates on some New Mexico volcanic rocks Have You) NewMexico's Most Wanted Minera Is (pageT) Magnification of microscopic miner- als and glass (page 8

Dunbar, Nelia W.

49

Minerals yearbook: Mineral industries of Europe and central Eurasia. Volume 3. 1992 international review  

SciTech Connect (OSTI)

Volume III, Minerals Yearbook -- International Review contains the latest available mineral data on more than 175 foreign countries and discusses the importance of minerals to the economies of these nations. Since the 1989 International Review, the volume has been presented as six reports. The report presents the Mineral Industries of Europe and Central Eurasia. The report incorporates location maps, industry structure tables, and an outlook section previously incorporated in the authors' Minerals Perspectives Series quinquennial regional books, which are being discontinued. This section of the Minerals Yearbook reviews the minerals industries of 45 countries: the 12 nations of the European Community (EC); 6 of the 7 nations of the European Free Trade Association (EFTA); Malta; the 11 Eastern European economies in transition (Albania, Bosnia and Hercegovina, Bulgaria, Croatia, Czechoslovakia, Hungary, Macedonia, Poland, Romania, Serbia and Montenegro, and Slovenia); and the countries of Central Eurasia (Armenia, Azerbaijan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgystan, Latvia, Lithuania, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine, and Uzbekistan).

Not Available

1992-01-01T23:59:59.000Z

50

alters bone mineral: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for Mineral and Energy Physics Websites Summary: Institute for Mineral and Energy Resources Answering Global Resource and Energy Challenges 12;Answering Global Resource and...

51

absorptiometric bone mineral: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for Mineral and Energy Physics Websites Summary: Institute for Mineral and Energy Resources Answering Global Resource and Energy Challenges 12;Answering Global Resource and...

52

african mineral dust: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laurent 19 Does the size distribution of mineral dust aerosols depend on the wind speed at emission? CERN Preprints Summary: The size distribution of mineral dust aerosols...

53

artery calcium mineral: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

between diatom aggregates, minerals, particulate organic carbon, and dissolved organic October 2008. 1 Correlations of particulate organic carbon (POC) and mineral fluxes into...

54

Determining Individual Mineral Contributions To U(VI) Adsorption...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Individual Mineral Contributions To U(VI) Adsorption In A Contaminated Aquifer Sediment: A Fluorescence Spectroscopy Determining Individual Mineral Contributions To U(VI)...

55

Synthesis of supported carbon nanotubes in mineralized silica...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

supported carbon nanotubes in mineralized silica-wood composites. Synthesis of supported carbon nanotubes in mineralized silica-wood composites. Abstract: Multiwall carbon...

56

Mineral Recovery Creates Revenue Stream for Geothermal Energy...  

Energy Savers [EERE]

Mineral Recovery Creates Revenue Stream for Geothermal Energy Development Mineral Recovery Creates Revenue Stream for Geothermal Energy Development January 21, 2014 - 12:00am...

57

V-215: NetworkMiner Directory Traversal and Insecure Library...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

5: NetworkMiner Directory Traversal and Insecure Library Loading Vulnerabilities V-215: NetworkMiner Directory Traversal and Insecure Library Loading Vulnerabilities August 9, 2013...

58

Biotic and abiotic pathways of phosphorus cycling in minerals...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and abiotic pathways of phosphorus cycling in minerals and sediments: insights from oxygen isotopes in phosphate. Biotic and abiotic pathways of phosphorus cycling in minerals...

59

Relations Of Ammonium Minerals At Several Hydrothermal Systems...  

Open Energy Info (EERE)

Minerals At Several Hydrothermal Systems In The Western Us Abstract Ammonium bound to silicate and sulfate minerals has recently been located at several major hydrothermal systems...

60

ITP Mining: Mining Industry of the Future Mineral Processing...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

of the Future Mineral Processing Technology Roadmap ITP Mining: Mining Industry of the Future Mineral Processing Technology Roadmap mptroadmap.pdf More Documents & Publications ITP...

Note: This page contains sample records for the topic "reid miner ncasi" 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

Mineral Leases by Political Subdivisions (Texas)  

Broader source: Energy.gov [DOE]

This legislation authorizes local political subdivisions to lease lands they own for the development of mineral interests, including coal and lignite. A public hearing process is required prior to...

62

Minerals on School and Public Lands  

Broader source: Energy.gov [DOE]

The Commissioner of School and Public Lands is authorized to lease the mineral interests of such lands for development. Section 5-7 of the SD Codified Laws describes provisions for the leasing of...

63

Oil, Gas, and Metallic Minerals (Iowa)  

Broader source: Energy.gov [DOE]

Operators of oil, gas, and metallic mineral exploration and production operations are required to obtain a drilling permit from the Iowa Department of Natural Resources and file specific forms with...

64

Sustainable growth and valuation of mineral reserves  

E-Print Network [OSTI]

The annual change in the value of an in-ground mineral is equal to the increase or decrease of inventories ("reserves"), multiplied by the market value of a reserve unit. The limited shrinking resource base does not exist. ...

Adelman, Morris Albert

1994-01-01T23:59:59.000Z

65

Mineral royalties : a preview of the development of Mineral Royalty legislation in South Africa.  

E-Print Network [OSTI]

?? A dynamic shift in the ownership, management and development of the countrys mineral heritage took place after the inauguration of the new political dispensation… (more)

Van der Zwan, Pieter

2010-01-01T23:59:59.000Z

66

2012 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

spodumene. Australia was, by far, the leading producer of lithium mineral concentrates, but Brazil, China

67

One Weird Trick to Stop Selfish Miners: Fresh Bitcoins, A Solution for the Honest Miner.  

E-Print Network [OSTI]

One Weird Trick to Stop Selfish Miners: Fresh Bitcoins, A Solution for the Honest Miner. Ethan Heilman Boston University heilman@bu.edu Abstract--A recent result in Bitcoin is the selfish mining incentive-compatible and harmful to Bitcoin. In this paper we introduce a new defense against selfish mining

68

Sustainable Water Management in the Minerals Industry 1 SUSTAINABLE WATER MANAGEMENT IN THE MINERALS  

E-Print Network [OSTI]

Sustainable Water Management in the Minerals Industry 1 SUSTAINABLE WATER MANAGEMENT IN THE MINERALS INDUSTRY Bill Whiten1, Mark McGuinness2, Sayed Hoseini3 The problem of managing a storage dam interest. It arises in the provision of water for Queensland coal mines, where additional water

McGuinness, Mark

69

NESHAP Subpart W Activities Reid J. Rosnick  

E-Print Network [OSTI]

facilities, but not conventional mines (open pit or underground) #12;5 Review of 40 CFR 192 Regulations for operating uranium mill tailings (Subpart W) EPA's rulemaking process Status update on Subpart W activities;4 Review of 40 CFR 192 Regulations Implementing UMTRCA EPA reviewing regulations implementing the Uranium

70

Ian David Reid Professor of Engineering Science  

E-Print Network [OSTI]

in association with Exeter College (Oct 98 ­ Sep 99) · Research Assistant, RA2 (Oct 96 ­ Sep 97) · Glasstone Glasstone Fellowship, 1993 · Rhodes Scholarship (Western Australia), 1987/88 · ACS WA (top student) and IBM

Kim, Tae-Kyun

71

Updated September 1, 2013 ?David Reide Corbett  

E-Print Network [OSTI]

and Ecosystem Sciences, Dept. of Geology, Tulane University · Uranium cycling and sediment transport of Geological Sciences Institute of Coastal Science and Policy East Carolina University Greenville, North Studies Institute, Wanchese, NC 27981 2011 to present: Professor, Department of Geological Sciences

Corbett, D. Reide

72

Earth Minerals Did you read chapter 29  

E-Print Network [OSTI]

1 Chapter 29 Earth Minerals Did you read chapter 29 before coming to class? A. Yes B. No Lets play that begins in Hawaii Other "Hot Spots" around the world The interior structure of Earth has been determined outer core #12;2 What is different on earth (as opposed to other planets)? Continents Why does

Hart, Gus

73

Institute for Mineral and Energy Resources  

E-Print Network [OSTI]

and sustainable use and development of the world's mineral and energy resources for the benefit of society; · Advance the science and technology needed to lower the cost and enhance cleaner energy generation, storage and energy systems; bioenergy generation, conversion and storage; control of sound and vibration; physical

74

Clay mineral reactions in clastic diagenesis  

SciTech Connect (OSTI)

Studies of clastic sediments have documented the formation and transformation of clay mineral assemblages during burial diagensis. The transformation of smectite to illite in shale by its reaction with the decomposition products of detrital K-feldspar and mica results in the production of new pore water at depth. The overall reaction mobilizes all the major chemical components in the shale, most of which are consumed in the formation of the diagenetic assemblage illite/smectite + chlorite + quartz. However, part of all the components is undoubtedly transported from the shale to sandstone units and is involved in cementation, replacement, and diagenetic clay mineral formation in these reservoir rocks. In contrast to burial diagenetic reactions in shale, where the sequence is monotonic and reasonably predictable, diagenetic reactions in sandstone are frequently variable. This variability is probably attributable to the fact that sandstones are open systems in which the reactions that proceed are controlled in part by the influx of new pore water, the chemistry of which is determined by an outside source. The useful understanding role of clay minerals in hydrocarbon exploration will follow from a determination of the system shale/sandstone/organic material. We need to tie in the nature and timing of shale mineral reactions and their control on the fluid and mass transfer from shale to sandstone.

Hower, J.

1983-03-01T23:59:59.000Z

75

2005 Minerals Yearbook CLAY AND SHALE  

E-Print Network [OSTI]

2005 Minerals Yearbook CLAY AND SHALE U.S. Department of the Interior U.S. Geological Survey February 2007 #12;CLAY AND SHALE--2005 18.1 CLAY AND SHALE By Robert L. Virta Domestic survey data at $1.68 billion in 2004 (table 1). Common clay and shale accounted for 59% of the tonnage, and kaolin

76

USED MINERAL-BASED CRANKCASE OIL  

E-Print Network [OSTI]

based crankcase oil vary depending on the brand and type of oil, whether gasoline or diesel fuel was used, the mechanical condition of the engine that the oil came from, and the amount of use between oil changes. Used oil is not naturally found in the environment. What happens to used mineral-based crankcase oil when it enters the environment? q Used mineral-based crankcase oil enters the air through the exhaust system during engine use. q It may enter water or soil when disposed of improperly. q The hydrocarbon components of the oil generally stick to the soil surface. q Some hydrocarbons evaporate into the air very quickly, and others evaporate more slowly. q Hydrocarbon components of the oil that enter surface water bind to small particles in the water and eventually settle to the bottom. q Hydrocarbons from used mineral-based crankcase oil may build up in shellfish or other organisms. q Some metals in used mineral-based crankcase oil dissolve in water and move through the s

Used Mineral-Based Crankcase

77

Iron oxyhydroxide mineralization on microbial extracellular polysaccharides  

SciTech Connect (OSTI)

Iron biominerals can form in neutral pH microaerophilic environments where microbes both catalyze iron oxidation and create polymers that localize mineral precipitation. In order to classify the microbial polymers that influence FeOOH mineralogy, we studied the organic and mineral components of biominerals using scanning transmission X-ray microscopy (STXM), micro X-ray fluorescence ({mu}XRF) microscopy, and high-resolution transmission electron microscopy (HRTEM). We focused on iron microbial mat samples from a creek and abandoned mine; these samples are dominated by iron oxyhydroxide-coated structures with sheath, stalk, and filament morphologies. In addition, we characterized the mineralized products of an iron-oxidizing, stalk-forming bacterial culture isolated from the mine. In both natural and cultured samples, microbial polymers were found to be acidic polysaccharides with carboxyl functional groups, strongly spatially correlated with iron oxyhydroxide distribution patterns. Organic fibrils collect FeOOH and control its recrystallization, in some cases resulting in oriented crystals with high aspect ratios. The impact of polymers is particularly pronounced as the materials age. Synthesis experiments designed to mimic the biomineralization processes show that the polysaccharide carboxyl groups bind dissolved iron strongly but release it as mineralization proceeds. Our results suggest that carboxyl groups of acidic polysaccharides are produced by different microorganisms to create a wide range of iron oxyhydroxide biomineral structures. The intimate and potentially long-term association controls the crystal growth, phase, and reactivity of iron oxyhydroxide nanoparticles in natural systems.

Chan, Clara S.; Fakra, Sirine C.; Edwards, David C.; Emerson, David; Banfield, Jillian F.

2010-06-22T23:59:59.000Z

78

E-Print Network 3.0 - affecting born mineral Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

mineral mines may affect air quality. As with water pollution, mines can contribute to air pollution... Chapter 15 Mineral Resources and the Environment 12;Minerals found in a...

79

aluminosilicate clay minerals: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

used mineral-based crankcase oil may build up in shellfish or other organisms. q Some metals in used mineral-based crankcase oil dissolve in water and move through the s Used...

80

anaerobic toluene mineralization: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and found in nature as the mineral tincal. Boric acid, also known as orthoboric acid boric acid. The most common minerals of commercial importance in the United States were...

Note: This page contains sample records for the topic "reid miner ncasi" 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.


81

accompanying mineral crystal: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Foreign investment: Coal 45 1 Oil 4.7 6 Industrial minerals: Cement 42 1 Fluorspar 55 1 Rare earths 85 1 Metals: Aluminum 312 Mineral-filled polypropylene: Improvement of scratch...

82

articular cartilage mineralization: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Foreign investment: Coal 45 1 Oil 4.7 6 Industrial minerals: Cement 42 1 Fluorspar 55 1 Rare earths 85 1 Metals: Aluminum 304 Mineral-filled polypropylene: Improvement of scratch...

83

amaro mineral sand: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Foreign investment: Coal 45 1 Oil 4.7 6 Industrial minerals: Cement 42 1 Fluorspar 55 1 Rare earths 85 1 Metals: Aluminum 452 Mineral-filled polypropylene: Improvement of scratch...

84

aporte del mineral: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Foreign investment: Coal 45 1 Oil 4.7 6 Industrial minerals: Cement 42 1 Fluorspar 55 1 Rare earths 85 1 Metals: Aluminum 118 Mineral-filled polypropylene: Improvement of scratch...

85

agua por mineral: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Foreign investment: Coal 45 1 Oil 4.7 6 Industrial minerals: Cement 42 1 Fluorspar 55 1 Rare earths 85 1 Metals: Aluminum 171 Mineral-filled polypropylene: Improvement of scratch...

86

Professor Jan Cilliers, Rio Tinto Professor of Mineral Processing  

E-Print Network [OSTI]

;38 Flowing froth - video #12;39 Smelter and Converter Separating the metal from the mineral #12;40 Casting

87

Molecular Characterization of Bacterial Respiration on Minerals  

SciTech Connect (OSTI)

The overall aim of this project was to contribute to our fundamental understanding of proteins and biological processes under extreme environmental conditions. We sought to define the biochemical and physiological mechanisms that underlie biodegradative and other cellular processes in normal, extreme, and engineered environments. Toward that end, we sought to understand the substrate oxidation pathways, the electron transport mechanisms, and the modes of energy conservation employed during respiration by bacteria on soluble iron and insoluble sulfide minerals. In accordance with these general aims, the specific aims were two-fold: To identify, separate, and characterize the extracellular biomolecules necessary for aerobic respiration on iron under strongly acidic conditions; and to elucidate the molecular principles whereby these bacteria recognize and adhere to their insoluble mineral substrates under harsh environmental conditions. The results of these studies were described in a total of nineteen manuscripts. Highlights include the following: 1. The complete genome of Acidithiobacillus ferrooxidans ATCC 23270 (type strain) was sequenced in collaboration with the DOE Joint Genome Institute; 2. Genomic and mass spectrometry-based proteomic methods were used to evaluate gene expression and in situ microbial activity in a low-complexity natural acid mine drainage microbial biofilm community. This was the first effort to successfully analyze a natural community using these techniques; 3. Detailed functional and structural studies were conducted on rusticyanin, an acid-stable electron transfer protein purified from cell-free extracts of At. ferrooxidans. The three-dimensional structure of reduced rusticyanin was determined from a combination of homonuclear proton and heteronuclear 15N- and 13C-edited NMR spectra. Concomitantly, the three-dimensional structure of oxidized rusticyanin was determined by X-ray crystallography to a resolution of 1.9 A by multiwavelength anomalous dispersion (MAD) phasing; 4. An acid-stable red cytochrome with a novel absorbance peak at 579 nm was purified from cell-free extracts of L. ferriphilum. Functional studies demonstrated that this cytochrome was an important component of the aerobic iron respiratory chain in this organism; 5. The specific adhesion of At. ferrooxidans to pyrite is mediated by an extracellular protein that was identified as aporusticyanin. The adhesion of At. ferrooxidans to minerals was characterized by high affinity binding that exhibited a high specificity for pyrite over other sulfide minerals. The principal biopolymer involved in this high-affinity adhesion to pyrite was isolated by mineral affinity chromatography and identified as aporusticyanin. The adhesion of purified aporusticyanin to minerals was observed to adhere to different mineral with a pattern of reactivity identical to that observed with the intact bacterium. Further, preincubation of pyrite with excess exogenous aporusticyanin served to inhibit the adherence of intact cells to the surface of the mineral, indicating that the protein and the cells adhered to the pyrite in a mutually exclusive manner. Taken together, these observations support a model where aporusticyanin located on the surface of the bacterial cell acts as a mineral-specific receptor for the initial adherence of At. ferrooxidans to solid pyrite; 6. The specific adhesion of L. ferriphilum to pyrite was mediated by a different acid-stable extracellular protein than aporusticyanin; and 7. A prototype integrating cavity absorption meter (ICAM) was assembled to determine whether this novel spectrophotometer could be used to study cellular respiration in situ.

Blake, Robert C.

2013-04-26T23:59:59.000Z

88

COLLECTIONS POLICY MANUAL Earth and Mineral Sciences Museum  

E-Print Network [OSTI]

COLLECTIONS POLICY MANUAL Earth and Mineral Sciences Museum College of Earth and Mineral Sciences Manual for the Earth and Mineral Sciences Museum has been developed to standardize procedures and provide guidelines for handling collections. The policies outlined here were established by the EMS Museum Director

Maroncelli, Mark

89

Carbon Sequestration via Mineral Carbonation: Overview and Assessment  

E-Print Network [OSTI]

1 Carbon Sequestration via Mineral Carbonation: Overview and Assessment 14 March 2002 Howard Herzog overview and assessment of carbon sequestration by mineral carbonation (referred to as "mineral sequestration R&D. The first is that carbonates have a lower energy state than CO2. Therefore, at least

90

Mineral balances, including in drinking water, estimated for Merced County dairy herds  

E-Print Network [OSTI]

of daily mineral intake, drinking-water mineral contributionND Total daily intake, including minerals in drinking water.mineral contents in drinking water and daily drinking-water

Castillo, Alejandro R Dr.; Santos, Jose Eduardo P.; Tabone, Tom J.

2007-01-01T23:59:59.000Z

91

E-Print Network 3.0 - activated mineral carbon Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Heat Engineering Laboratory Summary: FACULTY OF TECHNOLOGY Heat Engineering Laboratory Carbon dioxide sequestration by mineral... - Carbon dioxide sequestration by mineral...

92

Carbon dioxide sequestration by aqueous mineral carbonation of magnesium silicate minerals  

SciTech Connect (OSTI)

The dramatic increase in atmospheric carbon dioxide since the Industrial Revolution has caused concerns about global warming. Fossil-fuel-fired power plants contribute approximately one third of the total human-caused emissions of carbon dioxide. Increased efficiency of these power plants will have a large impact on carbon dioxide emissions, but additional measures will be needed to slow or stop the projected increase in the concentration of atmospheric carbon dioxide. By accelerating the naturally occurring carbonation of magnesium silicate minerals it is possible to sequester carbon dioxide in the geologically stable mineral magnesite (MgCO3). The carbonation of two classes of magnesium silicate minerals, olivine (Mg2SiO4) and serpentine (Mg3Si2O5(OH)4), was investigated in an aqueous process. The slow natural geologic process that converts both of these minerals to magnesite can be accelerated by increasing the surface area, increasing the activity of carbon dioxide in the solution, introducing imperfections into the crystal lattice by high-energy attrition grinding, and in the case of serpentine, by thermally activating the mineral by removing the chemically bound water. The effect of temperature is complex because it affects both the solubility of carbon dioxide and the rate of mineral dissolution in opposing fashions. Thus an optimum temperature for carbonation of olivine is approximately 185 degrees C and 155 degrees C for serpentine. This paper will elucidate the interaction of these variables and use kinetic studies to propose a process for the sequestration of the carbon dioxide.

Gerdemann, Stephen J.; Dahlin, David C.; O'Connor, William K.; Penner, Larry R.

2003-01-01T23:59:59.000Z

93

Mineral revenues: the 1983 report on receipts from Federal and Indian leases with summary data from 1920 to 1983  

SciTech Connect (OSTI)

Tables and figures abound for: mineral revenue management in 1983; offshore federal mineral revenues; onshore federal mineral revenues; Indian mineral revenues; distribution of federal and Indian mineral revenues; plus appended lease management data. (PSB)

Not Available

1984-01-01T23:59:59.000Z

94

Nevada Division of Minerals | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's HeatMexico: EnergyMithunCenter Jump to:2 Jump to:Minerals Name: Nevada

95

Selective flotation of phosphate minerals with hydroxamate collectors  

DOE Patents [OSTI]

A method is disclosed for separating phosphate minerals from a mineral mixture, particularly from high-dolomite containing phosphate ores. The method involves conditioning the mineral mixture by contacting in an aqueous in environment with a collector in an amount sufficient for promoting flotation of phosphate minerals. The collector is a hydroxamate compound of the formula; ##STR1## wherein R is generally hydrophobic and chosen such that the collector has solubility or dispersion properties it can be distributed in the mineral mixture, typically an alkyl, aryl, or alkylaryl group having 6 to 18 carbon atoms. M is a cation, typically hydrogen, an alkali metal or an alkaline earth metal. Preferably, the collector also comprises an alcohol of the formula, R'--OH wherein R' is generally hydrophobic and chosen such that the collector has solubility or dispersion properties so that it can be distributed in the mineral mixture, typically an alkyl, aryl, or alkylaryl group having 6 to 18 carbon atoms.

Miller, Jan D. (Salt Lake City, UT); Wang, Xuming (Salt Lake City, UT); Li, Minhua (Salt Lake City, UT)

2002-01-01T23:59:59.000Z

96

New Geophysical Technique for Mineral Exploration and Mineral Discrimination Based on Electromagnetic Methods  

SciTech Connect (OSTI)

The research during the first two years of the project was focused on developing the foundations of a new geophysical technique for mineral exploration and mineral discrimination, based on electromagnetic (EM) methods. The developed new technique is based on examining the spectral induced polarization effects in electromagnetic data using effective-medium theory and advanced methods of 3-D modeling and inversion. The analysis of IP phenomena is usually based on models with frequency dependent complex conductivity distribution. In this project, we have developed a rigorous physical/mathematical model of heterogeneous conductive media based on the effective-medium approach. The new generalized effective-medium theory of IP effect (GEMTIP) provides a unified mathematical method to study heterogeneity, multi-phase structure, and polarizability of rocks. The geoelectrical parameters of a new composite conductivity model are determined by the intrinsic petrophysical and geometrical characteristics of composite media: mineralization and/or fluid content of rocks, matrix composition, porosity, anisotropy, and polarizability of formations. The new GEMTIP model of multi-phase conductive media provides a quantitative tool for evaluation of the type of mineralization, and the volume content of different minerals using electromagnetic data. We have developed a 3-D EM-IP modeling algorithm using the integral equation (IE) method. Our IE forward modeling software is based on the contraction IE method, which improves the convergence rate of the iterative solvers. This code can handle various types of sources and receivers to compute the effect of a complex resistivity model. We have demonstrated that the generalized effective-medium theory of induced polarization (GEMTIP) in combination with the IE forward modeling method can be used for rock-scale forward modeling from grain-scale parameters. The numerical modeling study clearly demonstrates how the various complex resistivity models manifest differently in the observed EM data. These modeling studies lay a background for future development of the IP inversion method, directed at determining the electrical conductivity and the intrinsic chargeability distributions, as well as the other parameters of the relaxation model simultaneously. The new technology introduced in this project can be used for the discrimination between uneconomic mineral deposits and the location of zones of economic mineralization and geothermal resources.

Michael S. Zhdanov

2009-03-09T23:59:59.000Z

97

SkyMine Carbon Mineralization Pilot Project  

SciTech Connect (OSTI)

This Topical Report addresses accomplishments achieved during Phase 2b of the SkyMineź Carbon Mineralization Pilot Project. The primary objectives of this project are to design, construct, and operate a system to capture CO2 from a slipstream of flue gas from a commercial coal-fired cement kiln, convert that CO2 to products having commercial value (i.e., beneficial use), show the economic viability of the CO2 capture and conversion process, and thereby advance the technology to the point of readiness for commercial scale demonstration and deployment. The overall process is carbon negative, resulting in mineralization of CO2 that would otherwise be released into the atmosphere. The project will also substantiate market opportunities for the technology by sales of chemicals into existing markets, and identify opportunities to improve technology performance and reduce costs at the commercial scale. The project is being conducted in two phases. The primary objectives of Phase 1 were to evaluate proven SkyMineź process chemistry for commercial pilot-scale operation and complete the preliminary design for the pilot plant to be built and operated in Phase 2, complete a NEPA evaluation, and develop a comprehensive carbon life cycle analysis. The objective of Phase 2b was to build the pilot plant to be operated and tested in Phase 2c.

Christenson, Norm; Walters, Jerel

2014-12-31T23:59:59.000Z

98

Mineral dissolution kinetics at the pore scale  

SciTech Connect (OSTI)

Mineral dissolution rates in the field have been reported to be orders of magnitude slower than those measured in the laboratory, an unresolved discrepancy that severely limits our ability to develop scientifically defensible predictive or even interpretive models for many geochemical processes in the earth and environmental sciences. One suggestion links this discrepancy to the role of physical and chemical heterogeneities typically found in subsurface soils and aquifers in producing scale-dependent rates where concentration gradients develop. In this paper, we examine the possibility that scale-dependent mineral dissolution rates can develop even at the single pore and fracture scale, the smallest and most fundamental building block of porous media. To do so, we develop two models to analyze mineral dissolution kinetics at the single pore scale: (1) a Poiseuille Flow model that applies laboratory-measured dissolution kinetics at the pore or fracture wall and couples this to a rigorous treatment of both advective and diffusive transport, and (2) a Well-Mixed Reactor model that assumes complete mixing within the pore, while maintaining the same reactive surface area, average flow rate, and geometry as the Poiseuille Flow model. For a fracture, a 1D Plug Flow Reactor model is considered in addition to quantify the effects of longitudinal versus transverse mixing. The comparison of averaged dissolution rates under various conditions of flow, pore size, and fracture length from the three models is used as a means to quantify the extent to which concentration gradients at the single pore and fracture scale can develop and render rates scale-dependent. Three important minerals that dissolve at widely different rates, calcite, plagioclase, and iron hydroxide, are considered. The modeling indicates that rate discrepancies arise primarily where concentration gradients develop due to comparable rates of reaction and advective transport, and incomplete mixing via molecular diffusion. The magnitude of the reaction rate is important, since it is found that scaling effects (and thus rate discrepancies) are negligible at the single pore and fracture scale for plagioclase and iron hydroxide because of the slow rate at which they dissolve. In the case of calcite, where dissolution rates are rapid, scaling effects can develop at high flow rates from 0.1 cm/s to 1000 cm/s and for fracture lengths less than 1 cm. At more normal flow rates, however, mixing via molecular diffusion is effective in homogenizing the concentration field, thus eliminating any discrepancies between the Poiseuille Flow and the Well-Mixed Reactor model. This suggests that a scale dependence to mineral dissolution rates is unlikely at the single pore or fracture scale under normal geological/hydrologic conditions, implying that the discrepancy between laboratory and field rates must be attributed to other factors.

Li, L.; Steefel, C.I.; Yang, L.

2007-05-24T23:59:59.000Z

99

Australasian Code for Reporting of Exploration Results, Mineral...  

Open Energy Info (EERE)

The Joint Ore Reserves Committee of The Australasian Institute of Mining and Metallurgy, Australian Institute of Geoscientists, and Minerals Council of Australia, 2012...

100

Coop: 02-2011 COLLEGE OF ENGINEERING AND MINERAL RESOURCES  

E-Print Network [OSTI]

Coop: 02-2011 COLLEGE OF ENGINEERING AND MINERAL RESOURCES COOPERATIVE EDUCATION PROGRAM STUDENT. DEPENDABILITY Reliable, prompt, trustworthy; meets obligations and follow directions. CREATIVITY Proposes ideas

Mohaghegh, Shahab

Note: This page contains sample records for the topic "reid miner ncasi" 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

Reclamation of Land Used for Mineral Mining (Virginia)  

Broader source: Energy.gov [DOE]

This legislation aims to provide for the rehabilitation and conservation of land affected by the mining of minerals through proper planning, proper use of appropriate methods of mining,...

102

Potential of Mineral Uptake Efficiency by Some Apple Rootstocks  

E-Print Network [OSTI]

1999. Drought tolerance of apple rootstocks: Production andwater relations of five apple rootstocks. Acta Horticultureon Mineral Composition of Apple Leaves. J. Am. Soc. Hort.

Amiri, Mohammad E; Fallahi, Esmail

2009-01-01T23:59:59.000Z

103

arable mineral soils: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

year (tyr) of magnesium ferrosilicon, and 8,500 tyr of ferrosilicon (Globe Specialty Metals, inc 320 Placement of Mineral Trioxide Aggregate Using Two Different Techniques....

104

Mineral Association Changes the Secondary Structure and Dynamics...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dynamics of Murine Amelogenin. Mineral Association Changes the Secondary Structure and Dynamics of Murine Amelogenin. Abstract: Biomineralization proteins, present during the...

105

Epithermal Gold Mineralization and a Geothermal Resource at Blue...  

Open Energy Info (EERE)

Epithermal Gold Mineralization and a Geothermal Resource at Blue Mountain, Humboldt County, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal...

106

Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From...  

Open Energy Info (EERE)

boiling or by isotopic exchange at low waterrock ratios in new fractures. The mineralogy and apparent 18O enrichments of hydrothermal fracture-filling minerals are...

107

New Geophysical Technique for Mineral Exploration and Mineral Discrimination Based on Electromagnetic Methods  

SciTech Connect (OSTI)

The research during the first year of the project was focused on developing the foundations of a new geophysical technique for mineral exploration and mineral discrimination, based on electromagnetic (EM) methods. The proposed new technique is based on examining the spectral induced polarization effects in electromagnetic data using modern distributed acquisition systems and advanced methods of 3-D inversion. The analysis of IP phenomena is usually based on models with frequency dependent complex conductivity distribution. One of the most popular is the Cole-Cole relaxation model. In this progress report we have constructed and analyzed a different physical and mathematical model of the IP effect based on the effective-medium theory. We have developed a rigorous mathematical model of multi-phase conductive media, which can provide a quantitative tool for evaluation of the type of mineralization, using the conductivity relaxation model parameters. The parameters of the new conductivity relaxation model can be used for discrimination of the different types of rock formations, which is an important goal in mineral exploration. The solution of this problem requires development of an effective numerical method for EM forward modeling in 3-D inhomogeneous media. During the first year of the project we have developed a prototype 3-D IP modeling algorithm using the integral equation (IP) method. Our IE forward modeling code INTEM3DIP is based on the contraction IE method, which improves the convergence rate of the iterative solvers. This code can handle various types of sources and receivers to compute the effect of a complex resistivity model. We have tested the working version of the INTEM3DIP code for computer simulation of the IP data for several models including a southwest US porphyry model and a Kambalda-style nickel sulfide deposit. The numerical modeling study clearly demonstrates how the various complex resistivity models manifest differently in the observed EM data. These modeling studies lay a background for future development of the IP inversion method, directed at determining the electrical conductivity and the intrinsic chargeability distributions, as well as the other parameters of the relaxation model simultaneously. The new technology envisioned in this proposal, will be used for the discrimination of different rocks, and in this way will provide an ability to distinguish between uneconomic mineral deposits and the location of zones of economic mineralization and geothermal resources.

Michael S. Zhdanov

2005-03-09T23:59:59.000Z

108

Respiratory disease in Utah coal miners  

SciTech Connect (OSTI)

Two hundred forty-two Utah underground coal miners volunteered to participate in a respiratory disease study. They were an older group (mean, 56 years of age) and had spent a mean of 29 years in the coal-mining industry. The prevalence of chronic bronchitis was 57%, and that of coal worker's pneumoconiosis, 25%; only one worker had progressive massive fibrosis. Significant impairment of pulmonary function was found among those with a history of cigarette smoking. Chronic bronchitis or coal worker's penumoconiosis among nonsmokers did not impair pulmonary function. There was a significant association among the nonsmokers between increasing exposure to coal dust and coal worker's pneumoconiosis, but not for changes in pulmonary function. Coal mine dust had a significant influence in causing the symptom complex of chronic cough and sputum production, and coal worker's pneumoconiosis.

Rom, W.N.; Kanner, R.E.; Renzetti, A.D. Jr.; Shigeoka, J.W.; Barkman, H.W.; Nichols, M.; Turner, W.A.; Coleman, M.; Wright, W.E.

1981-04-01T23:59:59.000Z

109

Respiratory disease in Utah coal miners  

SciTech Connect (OSTI)

Two hundred forty-two Utah underground coal miners volunteered to participate in a respiratory disease study. They were an older group (mean, 56 years of age) and had spent a mean of 29 years in the coal-mining industry. The prevalence of chronic bronchitis was 57%, and that of coal worker's pneumoconiosis, 25%; only one worker had progressive massive fibrosis. Significant impairment of pulmonary function was found among those with a history of cigarette smoking. Chronic bronchitis or coal worker's pneumoconiosis among nonsmokers did not impair pulmonary function. There was a significant association among the nonsmokers between increasing exposure to coal dust and coal worker's pneumoconiosis, but not for changes in pulmonary function. Coal mine dust had a significant influence in causing the symptom complex of chronic cough and sputum production, and coal worker's pneumoconiosis.

Rom, W.N.; Kanner, R.E.; Renzetti, A.D. Jr.; Shigeoka, J.W.; Barkman, H.W.; Nichols, M.; Turner, W.A.; Coleman, M.; Wright, W.E.

1981-04-01T23:59:59.000Z

110

ORIGINAL PAPER Comparison of manure compost and mineral fertilizer  

E-Print Network [OSTI]

ORIGINAL PAPER Comparison of manure compost and mineral fertilizer for hybrid poplar plantation and methods Composted sheep manure (10 and 20 kg/tree) at planting was compared to N and P mineral Contrary to what we expected, compost treatments neither increased root development nor tree water status

Paris-Sud XI, Université de

111

2011 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

Resources Ltd.). DuPont produced zircon from its heavy-mineral sands operation near Starke, FL. Iluka2011 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey ZIRCONIUM AND HAFNIUM. In 2011, although the global economy continued to struggle, consumption of zirconium ores and concentrates

112

2009 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

of australian company iluka resources Ltd.). duPont produced zircon from its heavy-mineral sands operation near2009 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey ZIRCONIUM AND HAFNIUM. in 2009, global economic conditions continued to depress zircon consumption. in response to decreased

113

2010 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

subsidiary of Australian company Iluka Resources Ltd.). DuPont produced zircon from its heavy-mineral sands2010 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey ZIRCONIUM AND HAFNIUM. In 2010, the global economy began to recover, and consumption of zirconium ores and concentrates increased

114

Trans Boundary Transport of Pollutants by Atmospheric Mineral  

E-Print Network [OSTI]

Trans Boundary Transport of Pollutants by Atmospheric Mineral Dust Y I G A L E R E L , * , U R I D, and solid constituents in the atmosphere (3-11). Uptake of pollutants by mineral dust has been shown Jerusalem, Israel The transport of anthropogenic pollution by desert dust in the Eastern Mediterranean

Einat, Aharonov

115

Calcite Mineral Scaling Potentials of High-Temperature Geothermal Wells  

E-Print Network [OSTI]

#12;i Calcite Mineral Scaling Potentials of High-Temperature Geothermal Wells Alvin I. Remoroza-Temperature Geothermal Wells Alvin I. Remoroza 60 ECTS thesis submitted in partial fulfillment of a Magister Scientiarum #12;iv Calcite Mineral Scaling Potentials of High-Temperature Geothermal Wells 60 ECTS thesis

Karlsson, Brynjar

116

Extension of lattice strain theory to mineral/mineral rare-earth element partitioning: An approach for assessing disequilibrium  

E-Print Network [OSTI]

Extension of lattice strain theory to mineral/mineral rare-earth element partitioning: An approach/melt parti- tion coefficients for rare-earth elements (REEs) in olivine and orthopyroxene to better 2006; accepted in revised form 20 September 2006 Abstract Olivine/melt and orthopyroxene/melt rare-earth

Lee, Cin-Ty Aeolus

117

Assessment of industrial minerals and rocks in the controlled area  

SciTech Connect (OSTI)

Yucca Mountain in Nye County, Nevada, is a potential site for a permanent repository for high-level nuclear waste in Miocene ash flow tuff. The Yucca Mountain controlled area occupies approximately 98 km{sup 2} that includes the potential repository site. The Yucca Mountain controlled area is located within the southwestern Nevada volcanic field, a large area of Miocene volcanism that includes at least four major calderas or cauldrons. It is sited on a remnant of a Neogene volcanic plateau that was centered around the Timber Mountain caldera complex. The Yucca Mountain region contains many occurrences of valuable or potentially valuable industrial minerals, including deposits with past or current production of construction aggregate, borate minerals, clay, building stone, fluorspar, silicate, and zeolites. The existence of these deposits in the region and the occurrence of certain mineral materials at Yucca Mountain, indicate that the controlled area may have potential for industrial mineral and rock deposits. Consideration of the industrial mineral potential within the Yucca Mountain controlled area is mainly based on petrographic and lithologic studies of samples from drill holes in Yucca Mountain. Clay minerals, zeolites, fluorite, and barite, as minerals that are produced economically in Nevada, have been identified in samples from drill holes in Yucca Mountain.

Castor, S.B. [Nevada Bureau of Mines and Geology, Reno, NV (United States); Lock, D.E. [Mackay School of Mines, Reno, NV (United States)

1996-08-01T23:59:59.000Z

118

E-Print Network 3.0 - austrian mineral water Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

mines may affect air quality. As with water pollution, mines can contribute to air pollution... Chapter 15 Mineral Resources and the Environment 12;Minerals ... Source: Pan,...

119

E-Print Network 3.0 - african gold miners Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in Peridotite: Alleghany... ultramafic wall rocks associated with Mother Lode-type hydrothermal gold-quartz vein mineralization... , gold, and associated minerals, and...

120

E-Print Network 3.0 - avoiding mineral pretreatment Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

their high mineral, especially nitrogen... , content, which is very useful in down-stream processing, since the utilisation of mineral nutrients Source: Ris National Laboratory...

Note: This page contains sample records for the topic "reid miner ncasi" 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

E-Print Network 3.0 - areal bone mineral Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(DXA)-derived areal bone mineral density (BMD) and reductions in vertebral fracture incidence... than the bone volume fraction (mineralized bone volumebulk volume).12...

122

E-Print Network 3.0 - affecting bone mineral Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of remodeling on the mineralization of bone... of therapies that reduce the risk of fracture, increase bone mineral density or change the biochemical markers... mass and...

123

E-Print Network 3.0 - activity bone mineral Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of remodeling on the mineralization of bone... of therapies that reduce the risk of fracture, increase bone mineral density or change the biochemical markers... mass and...

124

E-Print Network 3.0 - actinide pyrochlore minerals Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

minerals, Na- bearing carbonates, and Zr-bearing oxides... INTRODUCTION Titanite is one of the most common and paragenetically supple titanium minerals in the...

125

SkyMine Carbon Mineralization Pilot Project  

SciTech Connect (OSTI)

This Topical Report addresses accomplishments achieved during Phase 1 of the SkyMine{reg_sign} Carbon Mineralization Pilot Project. The primary objectives of this project are to design, construct, and operate a system to capture CO{sub 2} from a slipstream of flue gas from a commercial coal-fired cement kiln, convert that CO{sub 2} to products having commercial value (i.e., beneficial use), show the economic viability of the CO{sub 2} capture and conversion process, and thereby advance the technology to a point of readiness for commercial scale demonstration and proliferation. The project will also substantiate market opportunities for the technology by sales of chemicals into existing markets, and identify opportunities to improve technology performance and reduce costs at commercial scale. The primary objectives of Phase 1 of the project were to elaborate proven SkyMine{reg_sign} process chemistry to commercial pilot-scale operation and complete the preliminary design ('Reference Plant Design') for the pilot plant to be built and operated in Phase 2. Additionally, during Phase 1, information necessary to inform a DOE determination regarding NEPA requirements for the project was developed, and a comprehensive carbon lifecycle analysis was completed. These items were included in the formal application for funding under Phase 2. All Phase 1 objectives were successfully met on schedule and within budget.

Joe Jones; Clive Barton; Mark Clayton; Al Yablonsky; David Legere

2010-09-30T23:59:59.000Z

126

Integrating Steel Production with Mineral Carbon Sequestration  

SciTech Connect (OSTI)

The objectives of the project were (i) to develop a combination iron oxide production and carbon sequestration plant that will use serpentine ores as the source of iron and the extraction tailings as the storage element for CO2 disposal, (ii) the identification of locations within the US where this process may be implemented and (iii) to create a standardized process to characterize the serpentine deposits in terms of carbon disposal capacity and iron and steel production capacity. The first objective was not accomplished. The research failed to identify a technique to accelerate direct aqueous mineral carbonation, the limiting step in the integration of steel production and carbon sequestration. Objective (ii) was accomplished. It was found that the sequestration potential of the ultramafic resource surfaces in the US and Puerto Rico is approximately 4,647 Gt of CO2 or over 500 years of current US production of CO2. Lastly, a computer model was developed to investigate the impact of various system parameters (recoveries and efficiencies and capacities of different system components) and serpentinite quality as well as incorporation of CO2 from sources outside the steel industry.

Klaus Lackner; Paul Doby; Tuncel Yegulalp; Samuel Krevor; Christopher Graves

2008-05-01T23:59:59.000Z

127

Mineral Deformation at Earth's Core-Mantle Boundary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource Program PreliminaryA3,0 Alabama - Natural GasMineralMineralMineral

128

A Review Of Water Contents Of Nominally Anhydrous Natural Minerals...  

Open Energy Info (EERE)

Water Contents Of Nominally Anhydrous Natural Minerals In The Mantles Of Earth, Mars And The Moon Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal...

129

An Overview of Hydrothermal Alteration and Vein Mineralization...  

Open Energy Info (EERE)

Vein Mineralization in Continental Scientific Drilling Program Core Hole VC-2B, Valles Caldera, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library...

130

Hyperspectral mineral mapping in support of geothermal exploration...  

Open Energy Info (EERE)

mineral mapping in support of geothermal exploration- Examples from Long Valley Caldera, CA and Dixie Valley, NV, USA Jump to: navigation, search OpenEI Reference LibraryAdd to...

131

Select Minerals and Potable Use of Reclaimed Wastewaters  

E-Print Network [OSTI]

The long-observed relationships of an influence of drinking water mineral content on heart-circulatory deaths are developed to indicate that sodium -- when present in sufficiently high concentrations -- may be detrimental to human health...

Wolf, H.

132

Hyperspectral Mineral Mapping For Geothermal Exploration On The...  

Open Energy Info (EERE)

and X-ray diffraction analyses of samples collected in the field. We are in the process of producing and validating mineral maps that will be used to narrow the scope of...

133

U.S. Geological Survey China's Growing Appetite for Minerals  

E-Print Network [OSTI]

: Coal 45 1 Oil 4.7 6 Industrial minerals: Cement 42 1 Fluorspar 55 1 Rare earths 85 1 Metals: Aluminum Republic of Korea Thailand Other Asian Crisis 1997 #12;Production Flow for Cement #12;Country-Level Ou

134

Inducing Mineral Precipitation in Groundwater by Addition of Phosphate  

SciTech Connect (OSTI)

Induced precipitation of phosphate minerals to scavenge trace metals and radionuclides from groundwater is a potential remediation approach for contaminated aquifers. Phosphate minerals can sequester trace elements by primary mineral formation, solid solution formation and/or adsorption, and they are poorly soluble under many environmental conditions, making them attractive for long-term sustainable remediation. The success of such engineered schemes will depend on the particular mineral phases generated, their rates of formation, and their long term stability. The purpose of this study was to examine the precipitation of calcium phosphate minerals under conditions representative of a natural groundwater. Because microorganisms are present in groundwater, and because some proposed schemes for induced phosphate mineral precipitation rely on the stimulation of native groundwater populations, we also tested the effect of bacterial cells (initial densities of 105 and 107 ml-1) within the precipitation medium. We also tested the effect of a trace mixture of propionic, isovaleric, formic and butyric acids (total concentration 0.035 mM). The experiments showed that the general progression of mineral precipitation was similar under all of the conditions, with initial formation of amorphous calcium carbonate, and transformation to poorly crystalline hydroxyapatite (HAP) by the end of the week-long experiments. The presence of the bacterial cells appeared to delay precipitation, although by the end of 7 days the overall extent of precipitation was similar for all of the treatments. The stoichiometry of the final precipitates as well as results of Rietveld refinement of x-ray diffraction data indicated that the treatments including organic acids and bacterial cells resulted in increased distortion of the HAP crystal lattice, with the higher concentration of cells resulting in the greatest distortion. Uptake of Sr into the phosphate minerals was decreased in the treatments with cells and organic acids, compared to the control. The results of the experiments enable a greater understanding of the challenges associated with phosphate-based remediation schemes for contaminated environments.

Karen E. Wright; Yoshiko Fujita; Thomas Hartmann; Mark Conrad

2011-10-01T23:59:59.000Z

135

A NOVEL APPROACH TO MINERAL CARBONATION: ENHANCING CARBONATION WHILE AVOIDING MINERAL PRETREATMENT PROCESS COST  

SciTech Connect (OSTI)

Known fossil fuel reserves, especially coal, can support global energy demands for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Unlike other CO{sub 2} sequestration candidate technologies that propose long-term storage, mineral sequestration provides permanent disposal by forming geologically stable mineral carbonates. Carbonation of the widely occurring mineral olivine (e.g., forsterite, Mg{sub 2}SiO{sub 4}) is a large-scale sequestration process candidate for regional implementation, which converts CO{sub 2} into the environmentally benign mineral magnesite (MgCO{sub 3}). The primary goal is cost-competitive process development. As the process is exothermic, it inherently offers low-cost potential. Enhancing carbonation reactivity is key to economic viability. Recent studies at the U.S. DOE Albany Research Center have established that aqueous-solution carbonation using supercritical CO{sub 2} is a promising process; even without olivine activation, 30-50% carbonation has been achieved in an hour. Mechanical activation (e.g., attrition) has accelerated the carbonation process to an industrial timescale (i.e., near completion in less than an hour), at reduced pressure and temperature. However, the activation cost is too high to be economical and lower cost pretreatment options are needed. Herein, we report our first year progress in exploring a novel approach that offers the potential to substantially enhance carbonation reactivity while bypassing pretreatment activation. We have discovered that robust silica-rich passivating layers form on the olivine surface during carbonation. As carbonation proceeds, these passivating layers thicken, fracture and eventually exfoliate, exposing fresh olivine surfaces during rapidly-stirred/circulating carbonation. We are exploring the mechanisms that govern carbonation reactivity and the impact that (1) modeling/controlling the slurry fluid-flow conditions, (2) varying the aqueous ion species/size and concentration (e.g., Li{sup +}, Na{sup +}, K{sup +}, Rb{sup +}, Cl{sup -}, HCO{sub 3}{sup -}), and (3) incorporating select sonication offer to enhance exfoliation and carbonation. Thus far, we have succeeded in nearly doubling the extent of carbonation observed compared with the optimum procedure previously developed by the Albany Research Center. Aqueous carbonation reactivity was found to be a strong function of the ionic species present and their aqueous activities, as well as the slurry fluid flow conditions incorporated. Synergistic control of these parameters offers the potential for further improvements in carbonation reactivity. A new sonication exfoliation system incorporating a novel sealing system was developed to carry out the sonication studies. Our initial studies that incorporate controlled sonication have not yet lead to a significant improvement in the extent of carbonation observed. Year 2 studies will emphasize those approaches that offer the greatest potential to cost effectively enhance carbonation, as well as combined approaches that may further enhance carbonation. Mechanistic investigations indicate incongruent dissolution results in the observed silica-rich passivating layer formation. Observations of magnesite nanocrystals within the passivating layers that form indicate the layers can exhibit significant permeability to the key reactants present (e.g., Mg{sup 2+}, H{sup +}, H{sub 2}O, CO{sub 2}, and HCO{sub 3} -). Atomistic modeling supports the observation of robust passivating layers that retain significant permeability to the key reaction species involved. Studies in Year 2 will emphasize the impact that controlled aqueous speciation and activity and slurry-flow dynamics have on the mechanisms that control carbonation reactivity and the potential they offer to substantially reduce olivine mineral sequestration process cost.

Michael J. McKelvy; Andrew V.G. Chizmeshya; Kyle Squires; Ray W. Carpenter; Hamadallah Bearat

2005-10-01T23:59:59.000Z

136

Sustainable Development Indicators 353 In the Mineral Industries, Milos 2003, Greece  

E-Print Network [OSTI]

Sustainable Development Indicators 353 In the Mineral Industries, Milos 2003, Greece Sustainable technologies in the sustainable development of mineral resources. 1. INTRODUCTION The design of surface mineral operations must balance mine planning with the principles of sustainable development of mineral resources

137

A Novel Approach to Mineral Carbonation: Enhancing Carbonation While Avoiding Mineral Pretreatment Process Cost  

SciTech Connect (OSTI)

Known fossil fuel reserves, especially coal, can support global energy demands for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Unlike other CO{sub 2} sequestration candidate technologies that propose long-term storage, mineral sequestration provides permanent disposal by forming geologically stable mineral carbonates. Carbonation of the widely occurring mineral olivine (e.g., forsterite, Mg{sub 2}SiO{sub 4}) is a large-scale sequestration process candidate for regional implementation, which converts CO{sub 2} into the environmentally benign mineral magnesite (MgCO{sub 3}). The primary goal is cost-competitive process development. As the process is exothermic, it inherently offers low-cost potential. Enhancing carbonation reactivity is key to economic viability. Recent studies at the U.S. DOE Albany Research Center have established that aqueous-solution carbonation using supercritical CO{sub 2} is a promising process; even without olivine activation, 30-50% carbonation has been achieved in an hour. Mechanical activation (e.g., attrition) has accelerated the carbonation process to an industrial timescale (i.e., near completion in less than an hour), at reduced pressure and temperature. However, the activation cost is too high to be economical and lower cost pretreatment options are needed. We have discovered that robust silica-rich passivating layers form on the olivine surface during carbonation. As carbonation proceeds, these passivating layers thicken, fracture and eventually exfoliate, exposing fresh olivine surfaces during rapidly-stirred/circulating carbonation. We are exploring the mechanisms that govern carbonation reactivity and the impact that (1) modeling/controlling the slurry fluid-flow conditions, (2) varying the aqueous ion species/size and concentration (e.g., Li+, Na+, K+, Rb+, Cl-, HCO{sub 3}{sup -}), and (3) incorporating select sonication offer to enhance exfoliation and carbonation. Thus far, we have succeeded in nearly doubling the extent of carbonation observed compared with the optimum procedure previously developed by the Albany Research Center. Aqueous carbonation reactivity was found to be a strong function of the ionic species present and their aqueous activities, as well as the slurry fluid flow conditions incorporated. High concentration sodium, potassium, and sodium/potassium bicarbonate aqueous solutions have been found to be the most effective solutions for enhancing aqueous olivine carbonation to date. Slurry-flow modeling using Fluent indicates that the slurry-flow dynamics are a strong function of particle size and mass, suggesting that controlling these parameters may offer substantial potential to enhance carbonation. During the first project year we developed a new sonication exfoliation apparatus with a novel sealing system to carry out the sonication studies. We also initiated investigations to explore the potential that sonication may offer to enhance carbonation reactivity. During the second project year, we extended our investigations of the effects of sonication on the extent of carbonation as a function of the following parameters: particle size distribution, the mass of solid reactant, volume fraction of aqueous solution present, sonication power, time, temperature, and CO{sub 2} pressure. To date, none of the conditions investigated have significantly enhanced carbonation. Mechanistic investigations of the stirred ({approx}1,500 rpm) aqueous olivine carbonation process indicate the carbonation process involves both incongruent magnesium dissolution and silica precipitation, which results in robust silica-rich passivating layer formation. Secondary ion mass spectrometry observation of H within the passivating layer that forms during static carbonation suggests 2H{sup +}/Mg{sup 2+} ion exchange is associated with incongruent dissolution. Apparently, H{sub 2}O forms at or near the olivine/passivating-layer interface during the process and diffuses out through the passivating layers during the carbonation reaction. This is

Andrew V. G. Chizmeshya; Michael J. McKelvy; Kyle Squires; Ray W. Carpenter; Hamdallah Bearat

2007-06-21T23:59:59.000Z

138

A Novel Approach To Mineral Carbonation: Enhancing Carbonation While Avoiding Mineral Pretreatment Process Cost  

SciTech Connect (OSTI)

Known fossil fuel reserves, especially coal, can support global energy demands for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Unlike other CO{sub 2} sequestration candidate technologies that propose long-term storage, mineral sequestration provides permanent disposal by forming geologically stable mineral carbonates. Carbonation of the widely occurring mineral olivine (e.g., forsterite, Mg{sub 2}SiO{sub 4}) is a large-scale sequestration process candidate for regional implementation, which converts CO{sub 2} into the environmentally benign mineral magnesite (MgCO{sub 3}). The primary goal is cost-competitive process development. As the process is exothermic, it inherently offers low-cost potential. Enhancing carbonation reactivity is key to economic viability. Recent studies at the U.S. DOE Albany Research Center have established that aqueous-solution carbonation using supercritical CO{sub 2} is a promising process; even without olivine activation, 30-50% carbonation has been achieved in an hour. Mechanical activation (e.g., attrition) has accelerated the carbonation process to an industrial timescale (i.e., near completion in less than an hour), at reduced pressure and temperature. However, the activation cost is too high to be economical and lower cost pretreatment options are needed. Herein, we report our second year progress in exploring a novel approach that offers the potential to substantially enhance carbonation reactivity while bypassing pretreatment activation. As our second year progress is intimately related to our earlier work, the report is presented in that context to provide better overall understanding of the progress made. We have discovered that robust silica-rich passivating layers form on the olivine surface during carbonation. As carbonation proceeds, these passivating layers thicken, fracture and eventually exfoliate, exposing fresh olivine surfaces during rapidly-stirred/circulating carbonation. We are exploring the mechanisms that govern carbonation reactivity and the impact that (i) modeling/controlling the slurry fluid-flow conditions, (ii) varying the aqueous ion species/size and concentration (e.g., Li{sup +}, Na{sup +}, K{sup +}, Rb{sup +}, Cl{sup -}, HCO{sub 3}{sup -}), and (iii) incorporating select sonication offer to enhance exfoliation and carbonation. We have succeeded in nearly doubling the extent of carbonation observed compared with the optimum procedure previously developed by the Albany Research Center. Aqueous carbonation reactivity was found to be a strong function of the ionic species present and their aqueous activities, as well as the slurry fluid flow conditions incorporated. High concentration sodium, potassium, and sodium/potassium bicarbonate aqueous solutions have been found to be the most effective solutions for enhancing aqueous olivine carbonation to date. Slurry-flow modeling using Fluent indicates that the slurry-flow dynamics are a strong function of particle size and mass, suggesting that controlling these parameters may offer substantial potential to enhance carbonation. Synergistic control of the slurry-flow and aqueous chemistry parameters offers further potential to improve carbonation reactivity, which is being investigated during the no-cost extension period. During the first project year we developed a new sonication exfoliation system with a novel sealing system to carry out the sonication studies. We also initiated(Abstract truncated).

Michael J. McKelvy; Andrew V. G. Chizmeshya; Kyle Squires; Ray W. Carpenter; Hamdallah Bearat

2006-06-21T23:59:59.000Z

139

Minerals leached into drinking water from rubber stoppers  

SciTech Connect (OSTI)

Drinking water and its delivery system are potential sources of variation in animal research. Concern arose that rubber stoppers used to cork water bottles might be a source of some nutritionally required minerals which could leach into drinking water. Six types of stoppers, each having different compositions, were cleaned with stainless-steel sipper tubes inserted into them and attached to polypropylene bottles filled with either deionized water (pH 4.5) or acidified-deionized water (pH 2.5). After six days of contact, water levels of copper, magnesium, iron, manganese, zinc, chromium, and selenium were determined by atomic absorption spectroscopy. Additionally, three of the stopper types were analyzed for mineral content. Minerals were present in both stoppers and drinking water. Acidified-deionized water generally leached minerals from the stoppers than did deionized water. The black stopper which is commonly used in animal facilities contained and leached measurable levels of some minerals, but it still can be recommended for typical animal husbandry uses, although other types of stoppers would be more suitable for specific nutritional and toxicologic studies.

Kennedy, B.W.; Beal, T.S. (Carbohydrate Nutrition Laboratory, Beltsville Human Nutrition Research Center, MD (United States))

1991-06-01T23:59:59.000Z

140

Lung cancer epidemiology in New Mexico uranium miners  

SciTech Connect (OSTI)

This investigation assesses the health effects of radon progeny exposure in New Mexico uranium miners. Cumulative exposures sustained by most New Mexico miners are well below those received earlier in the Colorado Plateau. This project utilizes the research opportunity offered by New Mexico miners to address unresolved issues related to radon progeny exposure: (1) the lung cancer risk of lower levels of exposure, (2) interaction between radon progeny exposure and cigarette smoking in the causation of lung cancer, (3) the relationship between lung cancer histologic type and radon progeny exposure, and (4) possible effects of radon progeny exposure other than lung cancer. A cohort study of 3800 men with at least one year of underground uranium mining experience in New Mexico is in progress. Results are discussed.

Samet, J.M.

1991-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

Iowa State Mining and Mineral Resources Research Institute  

SciTech Connect (OSTI)

This final report describes the activities of the Iowa State Mining and Mineral Resources Research Institute (ISMMRRI) at Iowa State University for the period July 1, 1989, to June 30, 1990. Activities include research in mining- and mineral-related areas, education and training of scientists and engineers in these fields, administration of the Institute, and cooperative interactions with industry, government agencies, and other research centers. During this period, ISMMRRI has supported research efforts to: (1) Investigate methods of leaching zinc from sphalerite-containing ores. (2) Study the geochemistry and geology of an Archean gold deposit and of a gold-telluride deposit. (3) Enchance how-quality aggregates for use in construction. (4) Pre-clean coal by triboelectric charging in a fluidized-bed. (5) Characterize the crystal/grain alignment during processing of yttrium-barium-copper-perovskite (1-2-3) superconductors. (5) Study the fluid inclusion properties of a fluorite district. (6) Study the impacts of surface mining on community planning. (7) Assess the hydrophobicity of coal and pyrite for beneficiation. (8) Investigate the use of photoacoustic absorption spectroscopy for monitoring unburnt carbon in the exhaust gas from coal-fired boilers. The education and training program continued within the interdepartmental graduate minor in mineral resources includes courses in such areas as mining methods, mineral processing, industrial minerals, extractive metallurgy, coal science and technology, and reclamation of mined land. In addition, ISMMRRI hosted the 3rd International Conference on Processing and Utilization of High-Sulfur Coals in Ames, Iowa. The Institute continues to interact with industry in order to foster increased cooperation between academia and the mining and mineral community.

Not Available

1990-08-01T23:59:59.000Z

142

Mineral Deformation at Earth's Core-Mantle Boundary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource Program PreliminaryA3,0 Alabama - Natural GasMineralMineral

143

A literature review of actinide-carbonate mineral interactions  

SciTech Connect (OSTI)

Chemical retardation of actinides in groundwater systems is a potentially important mechanism for assessing the performance of the Waste Isolation Pilot Plant (WIPP), a facility intended to demonstrate safe disposal of transuranic waste. Rigorous estimation of chemical retardation during transport through the Culebra Dolomite, a water-bearing unit overlying the WIPP, requires a mechanistic understanding of chemical reactions between dissolved elements and mineral surfaces. This report represents a first step toward this goal by examining the literature for pertinent experimental studies of actinide-carbonate interactions. A summary of existing models is given, along with the types of experiments on which these models are based. Articles pertaining to research into actinide interactions with carbonate minerals are summarized. Select articles involving trace element-carbonate mineral interactions are also reviewed and may serve as templates for future research. A bibliography of related articles is included. Americium(III), and its nonradioactive analog neodymium(III), partition strongly from aqueous solutions into carbonate minerals. Recent thermodynamic, kinetic, and surface studies show that Nd is preferentially removed from solution, forming a Nd-Ca carbonate solid solution. Neptunium(V) is rapidly removed from solution by carbonates. Plutonium incorporation into carbonates is complicated by multiple oxidation states. Little research has been done on the radium(H) and thorium(IV) carbonate systems. Removal of uranyl ion from solution by calcite is limited to monolayer surface coverage.

Stout, D.L. [Missouri Univ., Columbia, MO (United States). Dept. of Geological Sciences; Carroll, S.A. [Lawrence Livermore National Lab., CA (United States)

1993-10-01T23:59:59.000Z

144

Contrib Mineral Petrol (2991) 109:10-18 Contributions to  

E-Print Network [OSTI]

mineral (PGM) nuggets of eluvial (residual) origin, associated with the Freetown Layered Gabbro Complex Os. The Pt- Fe alloy nuggets, on the other hand, were formed later in a residual melt which depositional environments. Introduction The origin of platinum nuggets is controversial. Pro- posed models

145

Mineral mesopore effects on nitrogenous organic matter Andrew R. Zimmermana,  

E-Print Network [OSTI]

as sequestration of pollutants in soils and sediments (Luthy et al., 1997), turnover of natural soil organic carbon that organic matter (OM) may be protected from enzymatic degradation by sequestration within mineral mesopores observations. These results provide a potential mechanism for the selective sequestration and preservation

Chorover, Jon

146

2011 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

of chromium chemicals and stainless steel. in 2011, oregon resources Corp. (orC) [a subsidiary of i Coos County, or, paleo-beach placer (heavy-mineral sand) deposits. in doing so, orC became the sole producer of foundry-grade chromite ore in the united States. orC chromite ore shipments were 5

147

2007 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

parts per million (ppm), to thulium and lutetium, the least abundant rare-earth elements (REE) at about2007 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey RARE EARTHS May 2010 #12;RARE EARTHS--2007 60.1 RARE EARTHS By James B. Hedrick Domestic survey data and tables were

148

Prospects for Rare Earth Elements From Marine Minerals  

E-Print Network [OSTI]

Prospects for Rare Earth Elements From Marine Minerals Rare earth elements (REEs) compose in the earth's crust. However, because of their geochemical proper es, rare earth elements are typically. Briefing Paper 02/12 Jim Hein | May 2012 www.isa.org.jm Table 1: Rare Earth Elements This paper

149

2010 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

million (ppm), to thulium and lutetium, the least abundant rare-earth elements (REE), at about 0.5 ppm, and thallium. Rare earths can be classified as either light rare-earth elements (LREE) or heavy rare-earth2010 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey RARE EARTHS [ADVANCE

150

2009 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

parts per million (ppm), to thulium and lutetium, the least abundant rare-earth elements (REE), at about be classified as either light rare-earth elements (LREE) or heavy rare-earth elements (HREE). This division2009 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey RARE EARTHS [ADVANCE

151

2011 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

not necessarily reflect trends in consumption. the rare earths are a moderately abundant group of 17 elements light rare-earth elements (LRee) or heavy rare-earth elements (hRee). the LRee include the lanthanide2011 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey RARE EARTHS [ADVANCE

152

REE MINERALS IN CATALO II, GOIAS, BRASIL Essaid BILAL1  

E-Print Network [OSTI]

, these minerals interact with the fluid surface and lose some of their REE and Ba. The exchange reactions between (cerrado). The most comprehensive study concerned drill-hole C3B1, located at about 175m north of the pipe). The drill first intersected several tens of meters of reddish-yellow clay soil,

Boyer, Edmond

153

2005 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

Sector Initiatives: Opportunities Now), a presidential public-private partnership established in 2003 produced by surface and underground mining and from brine. U.S. consumption of minerals and compounds and installing energy efficient burners in the driers has rewarded SVM by increased efficiency and energy savings

154

KING FAHD UNIVERSITY OF PETROLEUM & MINERALS Dhahran, Saudi Arabia  

E-Print Network [OSTI]

Rocks By Dr. Sidqi A. Abu-Khamsin Professor, Department of Petroleum Engineering © Copyright by Dr;1. INTRODUCTION 1.1: The nature of petroleum All chemical compounds found in nature are classified as eitherKING FAHD UNIVERSITY OF PETROLEUM & MINERALS Dhahran, Saudi Arabia Basic Properties of Reservoir

Abu-Khamsin, Sidqi

155

The semismooth Newton method for multicomponent reactive transport with minerals  

E-Print Network [OSTI]

is that problems containing CCs (so-called complementarity problems, CPs) are well known in the field of optimization theory. In this field, it is a well known strategy to solve CPs with the semismooth Newton method essential. The article is structured as follows. In Sec. 2.1 we introduce the mineral precipitation

Kraeutle, Serge

156

Electrical Properties of Mineral Surfaces for Increasing Water Sorption  

E-Print Network [OSTI]

in the presence of O2.2,4,5 In addition to controlling Mn concentrations, the nanostructures sequester heavy-metal and the associated toxic metals can be remobilized. N the electrical properties of mineral surfaces and thereby affect reactions with charged species such as metal

157

Preliminary conceptual model for mineral evolution in Yucca Mountain  

SciTech Connect (OSTI)

A model is presented for mineral alteration in Yucca Mountain, Nevada, that suggests that the mineral transformations observed there are primarily controlled by the activity of aqueous silica. The rate of these reactions is related to the rate of evolution of the metastable silica polymorphs opal-CT and cristobalite assuming that a{sub SiO{sub 2(aq)}} is fixed at the equilibrium solubility of the most soluble silica polymorph present. The rate equations accurately predict the present depths of disappearance of opal-CT and cristobalite. The rate equations have also been used to predict the extent of future mineral alteration that may result from emplacement of a high-level nuclear waste repository in Yucca Mountain. Relatively small changes in mineralogy are predicted, but these predictions are based on the assumption that emplacement of a repository would not increase the pH of water in Yucca Mountain nor increase its carbonate content. Such changes may significantly increase mineral alteration. Some of the reactions currently occurring in Yucca Mountain consume H{sup +} and CO{sub 3}{sup 2{minus}}. Combining reaction rate models for these reactions with water chemistry data may make it possible to estimate water flux through the basal vitrophyre of the Topopah Spring Member and to help confirm the direction and rate of flow of groundwater in Yucca Mountain.

Duffy, C.J.

1993-12-01T23:59:59.000Z

158

Mineral formation during simulated leaks of Hanford waste tanks  

E-Print Network [OSTI]

Mineral formation during simulated leaks of Hanford waste tanks Youjun Deng a , James B. Harsh a handling by M. Gascoyne Abstract Highly-alkaline waste solutions have leaked from underground tanks mimicking tank leak conditions at the US DOE Hanford Site. In batch experiments, Si-rich solutions

Flury, Markus

159

2006 Minerals Yearbook ClaY and Shale  

E-Print Network [OSTI]

2006 Minerals Yearbook ClaY and Shale U.S. Department of the Interior U.S. Geological Survey January 2008 #12;Clay and Shale--2006 18.1 The amount of clay sold or used by domestic producers in 2006 in 2005 (table 1). Common clay and shale accounted for 59% of the tonnage, and kaolin accounted for 55

160

Cost Assessment of CO2 Sequestration by Mineral Carbonation  

E-Print Network [OSTI]

Cost Assessment of CO2 Sequestration by Mineral Carbonation Frank E. Yeboah Tuncel M. Yegulalp Harmohindar Singh Research Associate Professor Professor Center for Energy Research... them carbon dioxide (CO 2 ). This paper assesses the cost of sequestering CO 2 produced by a ZEC power plant using solid sequestration process. INTRODUCTION CO 2 is produced when electrical energy is generated using conventional fossil...

Yeboah, F. E.; Yegulalp, T. M.; Singh, H.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

2008 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

statistics and world tungsten concentrate production for 2008 and the previous 4 years are listed in table 1 for lead in bullets, shot, and other products. Tungsten chemicals are used to make catalysts, corrosion2008 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey TUNGSTEN October 2010

162

2007 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

statistics and world tungsten concentrate production for 2007 and the previous 4 years are listed in table 12007 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey TUNGSTEN May 2010 #12;TUNGSTEN--2007 79.1 TUNGSTEN By Kim B. Shedd Domestic survey data and tables were prepared by Danielle L

163

2005 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

2005 Minerals Yearbook TungsTen U.S. Department of the Interior U.S. Geological Survey #12;TungsTen--2005 79.1 TungsTen ByKimB.shedd Domestic survey data and tables were prepared by Amy C. Tolcin, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international data

164

2006 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

, international data coordinator. No U.S. tungsten mine production was reported in 2006. U.S. supply of tungsten Service (FWS) granted final approval to four new tungsten shot products for hunting waterfowl and coots--iron-tungsten2006 Minerals Yearbook TUNGSTEN U.S. Department of the Interior U.S. Geological Survey April 2008

165

2010 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

with that of 2009. Salient U.S. tungsten statistics and world tungsten concentrate production for 20102010 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey TUNGSTEN [ADVANCE RELEASE] February 2012 #12;TUNGSTEN--2010 [ADVANCE RELEASE] 79.1 TUNGSTEN By Kim B. Shedd Domestic survey

166

2011 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

consumption increased significantly in 2011, as compared with that of 2010. World tungsten mine production. salient u.s. tungsten statistics and world tungsten concentrate production for 2007­11 are listed in table2011 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey TUNGSTEN [ADVANCE

167

MIN E 408: Mining Enterprise Economics Mineral Resource/Reserve  

E-Print Network [OSTI]

quality assurance and quality control (QA/QC) programs. Geological / Grade continuity · geometrical of any mining project. The quality of resource classification is a key parameter for accurate economic to attract investors. Mineral resource classification standards were created in order to define rules

Boisvert, Jeff

168

2011 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

); Oil-dri Corp. of america (fuller's earth); Texas Industries, Inc. (common clay and shale); Thiele2011 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey CLAY AND SHALE [ADVANCE RELEASE] May 2013 #12;Clay and Shale--2011 [adVanCe ReleaSe] 18.1 Clay and Shale By Robert l

169

2011 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

, electrowon, and secondary production. The United States fell to eighth ranked in copper smelter production2011 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey COPPER [ADVANCE RELEASE] July 2013 #12;Copper--2011 [ADVANCe reLeASe] 20.1 Copper By Daniel L. edelstein Domestic survey

170

Heavy mineral distribution in stream sediment of Tapah area, Perak, Malaysia  

SciTech Connect (OSTI)

This paper aims to provide the overview of occurrence, distribution and origin of the heavy minerals in the study area. A total of 45 selected stream sediment heavy mineral concentrate samples were panned using standard dulangs, dried and separated from other light minerals using bromoform. The heavy minerals were separated into different fractions at different amperes using Frantz Isodynamic magnetic separator. Mineral identification was done using binocular microscope augmented by X-ray diffraction analyses. Mineral abundance data were analysed graphically using triangular diagrams to show their origin. Dominant minerals present in the heavy mineral samples collected are ilmenite, cassiterite, tourmaline, zircon, topaz, and magnetite. The less common minerals, present in trace amounts are hematite, xenotime, allanite, monazite, rutile, anatase, leucoxene, chromite, garnet and olivine. Examination of the heavy mineral assemblage shows that they originated from granite batholiths of the Main Range, Changkat Rembian as well as from the metasedimentary rock in the area. The gold flakes present are found together with cassiterite and topaz indicating that gold originates from the mineralized veins contact-metamorphosed metasedimentary rocks. Almost all samples collected contain cassiterite grains in various amounts. From the mineral assemblage, the source of cassiterite originates from the mineralized quartz veins that cut granitic rocks of Main Range, Changkat Rembian as well as the metasedimentary rock in the area. Greisenized veins containing quartz, mica and tourmaline with the presence of wolframite and arsenopyrite also contribute to the presence of cassiterite in this study area.

Sibon, Mahat Hj [Jabatan Mineral dan Geosains Malaysia, 40000 Shah Alam, Selangor, Malaysia and Program Geologi, Pusat Pengajian Sains Sekitaran dan Sumber Alam, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia); Jamil, Habibah; Umor, Mohd Rozi [Program Geologi, Pusat Pengajian Sains Sekitaran dan Sumber Alam, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia); Hassan, Wan Fuad Wan [Jabatan Geologi, Fakulti Sains Universiti Malaya, 50603 Kuala Lumpur (Malaysia)

2013-11-27T23:59:59.000Z

171

Societal demand for increasing mineral resources continue to affect societythrough aspects as varied as  

E-Print Network [OSTI]

Societal demand for increasing mineral resources continue to affect societythrough aspects in investment. The discovery of new mineral resources requires increasing risk, increasing costs, and to provide trained individuals to industry. Vancouver has long been a global leader in exploration

Handy, Todd C.

172

Journal of Crystal Growth 280 (2005) 587593 Optimization of the mineral content in polymeric gels  

E-Print Network [OSTI]

Journal of Crystal Growth 280 (2005) 587­593 Optimization of the mineral content in polymeric gels.67. Phosphate ions were incorporated during the polymerization of the gel and mineralization was initiated

Azad, Abdul-Majeed

173

STRUCTURAL CONTROL AND ANISOTROPY OF MINERALIZATION THE CHUQUICAMATA PORPHYRY COPPER DEPOSIT,  

E-Print Network [OSTI]

STRUCTURAL CONTROL AND ANISOTROPY OF MINERALIZATION WITHIN THE CHUQUICAMATA PORPHYRY COPPER DEPOSIT CONTROL AND ANISOTROPY OF MINERALIZATION WITHIN THE CHUQUICAMATA PORPHYRY COPPER DEPOSIT, NORTHERN CHILE the Chuquicamata Porphyry Copper Deposit, northern Chile DEPARTMENT OR SCHOOL: Department of Earth Sciences DEGREE

Beaumont, Christopher

174

Pyridine sorption to mineral surfaces: a fourier transform infrared spectroscopy study  

E-Print Network [OSTI]

for the sorption of pyridine to the various mineral surfaces. Results indicated that hydrogen bonding and bonding to Lewis acid sites are responsible for the sorption of gaseous phase pyridine which sorbed to all mineral surfaces. FTIR spectra provided evidence...

Graham, Robert Edward

1999-01-01T23:59:59.000Z

175

Exploring Frontiers in Kinetics and Mechanisms of Geochemical Processes at the Mineral/Water Interface  

E-Print Network [OSTI]

Exploring Frontiers in Kinetics and Mechanisms of Geochemical Processes at the Mineral in the Earth's Critical Zone is the kinetics. The timescales for geochemical processes range from milliseconds geochemical processes including surface complexation, mineral transformations, and oxidation

Sparks, Donald L.

176

RIETVELD REFINEMENT OF REAL STRUCTURE PARAMETERS OF DISORDERED CLAY MINERALS IN  

E-Print Network [OSTI]

-conventional hydrocarbons in Germany) Germany's potential for shale oil and shale gas NIKO seal gas-rich shale shale: sedimentary rock which contains quartz, carbonates and clay minerals #12;clay minerals in shales quartz

Magee, Joseph W.

177

Rend Lake College celebrates the opening of a new coal miner training facility  

SciTech Connect (OSTI)

The Coal Miner Training Center at Rend Lake College recently hosted the Illinois Mining Institute's annual conference and a regional mine rescue competition. The article gives an outline of the coal miner training and refresher course offered. 3 photos.

Buchsbaum, L.

2009-09-15T23:59:59.000Z

178

Hunchback Shelter: A Fremont Lithic Production Site in the Mineral Mountains of Eastern Utah  

E-Print Network [OSTI]

Mineral Mountains or Black Rock sources (Talbot et al. 2000:Canyon, and Black Rock obsidian source areas. occupations

Greubel, Rand A.; Andrews, Bradford W.

2008-01-01T23:59:59.000Z

179

Report TKK-ENY-9 Mineral carbonation for long-term storage of CO2  

E-Print Network [OSTI]

://www.entek.chalmers.se/~anly/symp/symp2001.html) "CO2 sequestration by magnesium silicate mineral carbonation in Finland" Ron Zevenhoven of magnesium oxide-based mineral carbonation for CO2 sequestration" Ron Zevenhoven, Jens Kohlmann. underReport TKK-ENY-9 Mineral carbonation for long-term storage of CO2 from flue gases Jens Kohlmann 1

Zevenhoven, Ron

180

West Virginia University Benjamin M. Statler College of Engineering and Mineral Resources  

E-Print Network [OSTI]

West Virginia University Benjamin M. Statler College of Engineering and Mineral Resources Out.cemr.wvu.edu/freshman. #12;West Virginia University Benjamin M. Statler College of Engineering and Mineral Resources Study College of Engineering and Mineral Resources (CEMR) and the Freshman Engineering Program (FEP

Mohaghegh, Shahab

Note: This page contains sample records for the topic "reid miner ncasi" 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

Mineral replacement rate of olivine by chrysotile and brucite under high alkaline conditions  

E-Print Network [OSTI]

Mineral replacement rate of olivine by chrysotile and brucite under high alkaline conditions Romain Available online 8 March 2012 Keywords: A1. Mineral replacement rate A1. Serpentinization A1. TG analyses B1. Alkaline medium B2. Chrysotile nanotubes a b s t r a c t Olivine mineral replacement by serpentine is one

Montes-Hernandez, German

182

Mineral sequestration of CO2 by aqueous carbonation of1 coal combustion fly-ash2  

E-Print Network [OSTI]

1 Mineral sequestration of CO2 by aqueous carbonation of1 coal combustion fly-ash2 3 G. Montes that could possibly4 contribute to reducing carbon dioxide emissions is the in-situ mineral sequestration (long term5 geological storage) or the ex-situ mineral sequestration (controlled industrial reactors

Paris-Sud XI, Université de

183

Spatially resolved mineral deposition on patterned self-assembled monolayers  

SciTech Connect (OSTI)

Electron and ion beam lithographic techniques were used to pattern self-assembled monolayers with organic functional groups. Nucleation and growth of minerals from aqueous solution were confined to the patterned regions. A vinyl-terminated self-assembled monolayer (SAM) was selectively deposited in ion and electron beam etched regions of a methyl-terminated SAM. Sulfonation of the vinyl groups produced a surface patterned in either hydrophobic methyl groups or hydrophilic sulfonate groups. Subsequent growth of FeOOH films was confined to the sulfonated regions. Condensation images were used to image each step in the lithographic scheme. Resolution of the SAM patterning step was 1-3 [mu]m, while resolution of the mineral deposition step was 10-15 [mu]m. 15 refs., 3 figs.

Rieke, P.C.; Tarasevich, B.J.; Wood, L.L.; Engelhard, M.H.; Baer, D.R.; Fryxell, G.E. (Pacific Northwest Lab., Richland, WA (United States)); John, C.M. (Charles Evans Associates, Redwood City, CA (United States)); Laken, D.A.; Jaehnig, M.C. (FEI Corp., Beaverton, OR (United States))

1994-03-01T23:59:59.000Z

184

Intercalation of Trichloroethene by Sediment-Associated Clay Minerals  

SciTech Connect (OSTI)

The objective of this research was to examine the potential for intercalation of trichloroethene (TCE) by clay minerals associated with aquifer sediments. Sediment samples were collected from a field site inTucson, AZ. Two widely used Montmorillonite specimen clays were employed as controls. X-ray diffraction, conducted with a controlled-environment chamber, was used to characterize smectite interlayer dspacing for three treatments (bulk air-dry sample, sample mixed with synthetic groundwater, sample mixed with TCE-saturated synthetic groundwater). The results show that the d-spacing measured for the samples treated with TCE-saturated synthetic groundwater are larger (*26%) than those of the untreated samples for all field samples as well as the specimen clays. These results indicate that TCE was intercalated by the clay minerals, which may have contributed to the extensive elution tailing observed in prior miscible-displacement experiments conducted with this sediment.

Matthieu, Donald E.; Brusseau, Mark; Johnson, G. R.; Artiola, J. L.; Bowden, Mark E.; Curry, J. E.

2013-01-01T23:59:59.000Z

185

Scanning probe microscopy: Sulfate minerals in scales and cements  

SciTech Connect (OSTI)

The principles of scanning probe microscopy (SPM) are illustrated with examples from oilfield mineralogy, particularly emphasizing sulfate minerals involved in scale formation and cement hydration chemistry. The topography of the (010) cleavage surface of gypsum observed by atomic force microscopy shows atomically flat terraces separated by shallow steps often only one unit cell high. SPM allows direct observation of processes on mineral surfaces while they are in contact with solutions. The dissolution etching and crystal growth of gypsum and barite are discussed and rates of step migration estimated. The orientation of steps is related to the crystallographic axes. The action of phosphonate crystal growth inhibitor on gypsum and of a chelating scale solvent on barite are also shown. The multiphase microstructure of an oilwell cement clinker is described in relation to its hydration chemistry in contact with water and its reaction with sulfate ions.

Hall, C. [Schlumberger Cambridge Research (United Kingdom)

1995-11-01T23:59:59.000Z

186

2008 Minerals Yearbook U.S. Department of the Interior  

E-Print Network [OSTI]

million (ppm), to thulium and lutetium, the least abundant rare-earth elements (Ree) at about 0.5 ppm2008 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey RARE EARTHS October 2010 #12;RaRe eaRths--2008 60.1 RaRe eaRths By Daniel J. Cordier and James B. hedrick Domestic survey

187

Effects of mineral fillers in slurry seal mixtures  

E-Print Network [OSTI]

rather than a desi~. The current practice among engineers and contractors is to prepare a mixture in ac- cordance with these specifications using local materials. In many cases a mineral filler, usually portland cement, is added to "improve... applied to portland cement concrete pavements to improve the skid resistance and riding qualities of tbe surface. A slurry seal cost does not increase or improve the strength of the pavement structure . The City of Las Vagas, New Mexico, used slurry...

Harper, William Joe

1964-01-01T23:59:59.000Z

188

Hydrodesulfurization and hydrodenitrogenation catalysts obtained from coal mineral matter  

DOE Patents [OSTI]

A hydrotreating catalyst is prepared from coal mineral matter obtained by low temperature ashing coals of relatively low bassanite content by the steps of: (a) depositing on the low temperature ash 0.25-3 grams of an iron or nickel salt in water per gram of ash and drying a resulting slurry; (b) crushing and sizing a resulting solid; and (c) heating the thus-sized solid powder in hydrogen.

Liu, Kindtoken H. D. (Newark, DE); Hamrin, Jr., Charles E. (Lexington, KY)

1982-01-01T23:59:59.000Z

189

UNIVERSITY OF NEVADA, LAS VEGAS Thomas Hartmann Harry Reid Center...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

master's degree as well as his Ph.D. in mineralogy at the University of Heidelberg, Germany. In his thesis, he investigated the ternary Pd-Rh-Te metal system in the...

190

Secretary Chu, Senator Reid, Rep. Berkley Announce Conditional...  

Energy Savers [EERE]

announcement is yet another sign that Nevada is a major player in the growing solar industry," said Secretary Chu. "Investments like this one, along with the many other clean...

191

Global Methane Emissions from Pit Latrines Matthew C. Reid,*,,  

E-Print Network [OSTI]

Information ABSTRACT: Pit latrines are an important form of decentral- ized wastewater management, providing focused on centralized treatment plants,4,5 it has become increasingly clear that on-site wastewater emissions from decentralized wastewater sources and reassess the appropriate actions for emissions

Mauzerall, Denise

192

Description of Reid's Research Area November 30, 1998  

E-Print Network [OSTI]

analysis of physical pdes. They are becoming a standard part of computer al- gebra packages for simplifying

Reid, Greg

193

Secretary Chu, Senator Reid Announce Department of Energy Conditional  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energyof the Americas | Department ofof Energy ChuCommitment for a

194

Secretary Chu, Senator Reid Announce Department of Energy Conditional  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energyof the Americas | Department ofof Energy ChuCommitment for

195

Secretary Chu, Senator Reid Announce Department of Energy Conditional  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September2-SCORECARD-01-24-13DiscoversGEPartnershipsonSolarCommitment for a

196

Secretary Chu, Senator Reid, Rep. Berkley Announce Conditional Commitment  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September2-SCORECARD-01-24-13DiscoversGEPartnershipsonSolarCommitment for

197

Secretary Chu, Senator Reid Announce Department of Energy Conditional...  

Energy Savers [EERE]

consist of pre-engineered units that include an integrated vaporizer, preheater, turbine-generator set, condenser and feed pump, all of which work together to convert the...

198

Electrical anisotropy of mineralized and non mineralized rocks T.J. Katsube, M.E. Best*, and Jones, A.G., Geological Survey of Canada  

E-Print Network [OSTI]

PP 10.2 Electrical anisotropy of mineralized and non mineralized rocks T.J. Katsube, M.E. Best*, and Jones, A.G., Geological Survey of Canada Summary Significant electrical resistivity anisotropy, up to 1 to understand the electrical mechanisms involved in such anisotropic processes in order to provide information

Jones, Alan G.

199

MINERAL PROCESSING BY SHORT CIRCUITS IN PROTOPLANETARY DISKS  

SciTech Connect (OSTI)

Meteoritic chondrules were formed in the early solar system by brief heating of silicate dust to melting temperatures. Some highly refractory grains (Type B calcium-aluminum-rich inclusions, CAIs) also show signs of transient heating. A similar process may occur in other protoplanetary disks, as evidenced by observations of spectra characteristic of crystalline silicates. One possible environment for this process is the turbulent magnetohydrodynamic flow thought to drive accretion in these disks. Such flows generally form thin current sheets, which are sites of magnetic reconnection, and dissipate the magnetic fields amplified by a disk dynamo. We suggest that it is possible to heat precursor grains for chondrules and other high-temperature minerals in current sheets that have been concentrated by our recently described short-circuit instability. We extend our work on this process by including the effects of radiative cooling, taking into account the temperature dependence of the opacity; and by examining current sheet geometry in three-dimensional, global models of magnetorotational instability. We find that temperatures above 1600 K can be reached for favorable parameters that match the ideal global models. This mechanism could provide an efficient means of tapping the gravitational potential energy of the protoplanetary disk to heat grains strongly enough to form high-temperature minerals. The volume-filling nature of turbulent magnetic reconnection is compatible with constraints from chondrule-matrix complementarity, chondrule-chondrule complementarity, the occurrence of igneous rims, and compound chondrules. The same short-circuit mechanism may perform other high-temperature mineral processing in protoplanetary disks such as the production of crystalline silicates and CAIs.

McNally, Colin P. [Niels Bohr International Academy, Niels Bohr Institute, DK-2100 Copenhagen (Denmark); Hubbard, Alexander; Mac Low, Mordecai-Mark [Department of Astrophysics, American Museum of Natural History, New York, NY 10024-5192 (United States); Ebel, Denton S. [Department of Earth and Planetary Sciences, American Museum of Natural History, New York, NY 10024-5192 (United States); D'Alessio, Paola, E-mail: cmcnally@nbi.dk, E-mail: ahubbard@amnh.org, E-mail: mordecai@amnh.org, E-mail: debel@amnh.org, E-mail: p.dalessio@crya.unam.mx [Centro de Radioastronomia y Astrofisica, Universidad Nacional Autonoma de Mexico, 58089 Morelia, MICH (Mexico)

2013-04-10T23:59:59.000Z

200

Potassium Fixation and Supply by Soils with Mixed Clay Minerals.  

E-Print Network [OSTI]

B-1090 December 1969 1 potassium Fixation and Supply By Soils With Misd Clay Minerals I KUS A&M UNIVERSITY Tcrv Agricultural Experiment Station r i 0. Kunkel, Acting Director, College Station, Texas Summary to the plants while Cameron clay... supplied onl!. Studies were made on three agriculturally important me/me of exchangeable K. The capacity of all a soils of South Texas and Northern Mexico to determine soils to fix K increased with increasing remo\\dl i their potassium (K)-supplying power...

Hipp, Billy W.

1969-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

NOVEL IN-SITU METAL AND MINERAL EXTRACTION TECHNOLOGY  

SciTech Connect (OSTI)

This white paper summarizes the state of art of in-situ leaching of metals and minerals, and describes a new technology concept employing improved fragmentation of ores underground in order to prepare the ore for more efficient in-situ leaching, combined with technology to continuously improve solution flow patterns through the ore during the leaching process. The process parameters and economic benefits of combining the new concept with chemical and biological leaching are described. A summary is provided of the next steps required to demonstrate the technology with the goal of enabling more widespread use of in-situ leaching.

Glenn O'Gorman; Hans von Michaelis; Gregory J. Olson

2004-09-22T23:59:59.000Z

202

The morphological and chemical characteristics of respirable mineral wool fibers  

E-Print Network [OSTI]

in these are rockwool, slagwool and fibrous glass, any one of wh1ch may be processed from a molten state into a fluffy, lightweight mass of fine, intermingled mineral fibers composed of complex sil1cates. Each of these f1bers may have quite different physical... the United States, I In the early product1on of man-made slag fibers a stream of high pressure steam was aimed at molten slag flowing from a blast furnace, The wool produced was used ma1nly in the makinq of mortar as its value as an insulat1on material...

Butler, Donnie Ray

1976-01-01T23:59:59.000Z

203

Mineral Deformation at Earth's Core-Mantle Boundary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource Program PreliminaryA3,0 Alabama - Natural GasMineral Deformation at

204

Mineral Deformation at Earth's Core-Mantle Boundary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource Program PreliminaryA3,0 Alabama - Natural GasMineral Deformation

205

Mineral Deformation at Earth's Core-Mantle Boundary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource Program PreliminaryA3,0 Alabama - Natural GasMineral

206

Mineral Deformation at Earth's Core-Mantle Boundary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challenge fundProject8 -3EutecticMinding the Gap Makes for MoreMineral

207

Mineral Deformation at Earth's Core-Mantle Boundary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challenge fundProject8 -3EutecticMinding the Gap Makes forMineral

208

Quantitative determination of mineral composition by powder x-ray diffraction  

DOE Patents [OSTI]

An external standard intensity ratio method is used for quantitatively determining mineralogic compositions of samples by x-ray diffraction. The method uses ratios of x-ray intensity peaks from a single run. Constants are previously determined for each mineral which is to be quantitatively measured. Ratios of the highest intensity peak of each mineral to be quantified in the sample and the highest intensity peak of a reference mineral contained in the sample are used to calculate sample composition.

Pawloski, G.A.

1984-08-10T23:59:59.000Z

209

Dust suppression results using mineral oil applications on corn and milo  

E-Print Network [OSTI]

distribution (MCPSD) analysis, to determine the amount and particle size of the dust captured on the grain surface. Statistical analyses were performed on the effects due to dust concentration, mineral oil application and mineral oil*dust interaction. Each... TO CORN BENEFITS OF ADDING MINERAL OIL TO MILO 96 . 97 23 TREATMENT DESCRIPTION OP CORN SAMPLES USED FOR TESTING. 104 TREATMENT DESCRIPTION OF MILO SAMPLES USED FOR TESTING, . . . . . . . . . . . . . . PARTICLE SIZE DISTRIBUTION STATISTICS...

Wardlaw, Herman Douglas

1987-01-01T23:59:59.000Z

210

DOI Bureau of Indian Affairs Mineral Development Grants to Help with Development of Tribal Energy  

Broader source: Energy.gov [DOE]

The U.S. Department of the Interior, through the Bureau of Indian Affairs, Office of Indian Energy and Economic Development (IEED) is offering grants to federally-recognized Tribes and tribal energy resource development organizations for projects that help the development of a tribal energy and mineral resource inventory, a tribal energy and mineral resource on Indian land, or for the development of a report necessary to the development of energy and mineral resources on Indian lands.

211

Regulation of biological tissue mineralization through post-nucleation shielding  

E-Print Network [OSTI]

In vertebrates, insufficient availability of calcium and phosphate ions in extracellular fluids leads to loss of bone density and neuronal hyper-excitability. To counteract this problem, calcium ions are present at high concentrations throughout body fluids -- at concentrations exceeding the saturation point. This condition leads to the opposite situation where unwanted mineral sedimentation may occur. Remarkably, ectopic or out-of-place sedimentation into soft tissues is rare, in spite of the thermodynamic driving factors. This fortunate fact is due to the presence of auto-regulatory proteins that are found in abundance in bodily fluids. Yet, many important inflammatory disorders such as atherosclerosis and osteoarthritis are associated with this undesired calcification. Hence, it is important to gain an understanding of the regulatory process and the conditions under which it can go awry. In this Letter, we use ideas from mean-field classical nucleation theory to study the regulation of sedimentation of calcium phosphate salts in biological tissues through the mechanism of post-nuclear shielding of nascent mineral particles by binding proteins. A critical concentration of regulatory protein is identified as a function of the physical parameters that describe the system.

Joshua C. Chang; Robert M. Miura

2015-01-29T23:59:59.000Z

212

Society for Geology Applied to Ore Deposits GENEVA MINERALS: Industry and Academia  

E-Print Network [OSTI]

Society for Geology Applied to Ore Deposits GENEVA MINERALS: Industry and Academia Creating links Tripodi, Vanga Resources, Geneva · A student view of economic geology. Honza Catchpole, President

Halazonetis, Thanos

213

E-Print Network 3.0 - azoto mineral durante Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Futures Discussion Paper: Sustainability+Mineral... Future commodity outlooks New technology assessment Regions in transition Vision 2040: Mining, ... Source: University of...

214

E-Print Network 3.0 - adhesionvia template-driven mineralization...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Futures Discussion Paper: Sustainability+Mineral... Future commodity outlooks New technology assessment Regions in transition Vision 2040: Mining, ... Source: University of...

215

E-Print Network 3.0 - alkali mineral complex Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Geological Sciences, University of Manitoba Collection: Geosciences 44 Definitions CaX(s) + 90 Summary: Adsorption - surface complexation via a strong bond to a mineral...

216

Dept of Mathematical Sciences King Fahd University of Petroleum and Minerals  

E-Print Network [OSTI]

Seminar Dept of Mathematical Sciences King Fahd University of Petroleum and Minerals Presenter Dr, Smart Classroom # 203 Abstract The term regionalized variable is used to designate any variable

Omar, Mohammad H.

217

E-Print Network 3.0 - atrazine mineralization capacity Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biotechnology 51 Improving Life through Science and Technology. Summary: ;12;12;Carbon Mineralization Gas tight 1-L glass containers Ten mL 1 M KOH Humidity...

218

Three Packets of Minerals of the Periodic Table of Chemical Elements and Chemical Compounds  

E-Print Network [OSTI]

The concepts of alpha- and beta-packets of the periodic table of chemical elements and chemical compounds are defined. The first of the 47 minerals alpha-packets is composed. In it all minerals are arranged in increasing Iav index of proportionality of atomic weights of composing chemical elements, the same way as chemical elements are located in increasing atomic weights in the Periodic table. The packet includes 93 known minerals and two compounds - N2O5 and CO2 - being actually minerals. Beta-packet of oxides and hydroxides minerals includes 88 known minerals and five chemical compounds - N2O5, CO2, CO, SO3 and SO2. Two minerals of the packet have not been determined yet. Besides, beta-packet of minerals with sulfur, selenium or arsenic is composed, with one mineral not defined yet. The results of the calculations can be used for further development of the Periodic Table of Chemical Elements and Chemical Compounds and their properties investigation.

Labushev, Mikhail M

2013-01-01T23:59:59.000Z

219

Three Packets of Minerals of the Periodic Table of Chemical Elements and Chemical Compounds  

E-Print Network [OSTI]

The concepts of alpha- and beta-packets of the periodic table of chemical elements and chemical compounds are defined. The first of the 47 minerals alpha-packets is composed. In it all minerals are arranged in increasing Iav index of proportionality of atomic weights of composing chemical elements, the same way as chemical elements are located in increasing atomic weights in the Periodic table. The packet includes 93 known minerals and two compounds - N2O5 and CO2 - being actually minerals. Beta-packet of oxides and hydroxides minerals includes 88 known minerals and five chemical compounds - N2O5, CO2, CO, SO3 and SO2. Two minerals of the packet have not been determined yet. Besides, beta-packet of minerals with sulfur, selenium or arsenic is composed, with one mineral not defined yet. The results of the calculations can be used for further development of the Periodic Table of Chemical Elements and Chemical Compounds and their properties investigation.

Mikhail M. Labushev

2013-03-20T23:59:59.000Z

220

1983 annual report on Alaska's mineral resources. Geological Survey Circular 908  

SciTech Connect (OSTI)

This report describes activity during 1982 in Alaska relating to oil and gas, uranium, coal and peat, geothermal resources, and non-fuel, critical and strategic minerals. (ACR)

Not Available

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

E-Print Network 3.0 - atomic minerals exploration Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: , and adsorption of toxic atoms (such as arsenic) and molecules (such as dioxins) onto mineral surfaces 6... to simultaneously explore a wide range of contaminants...

222

Composition and method for self-assembly and mineralization of peptide-amphiphiles  

DOE Patents [OSTI]

The present invention is directed to a composition useful for making homogeneously mineralized self assembled peptide-amphiphile nanofibers and nanofiber gels. The composition is generally a solution comprised of a positively or negatively charged peptide-amphiphile and a like signed ion from the mineral. Mixing this solution with a second solution containing a dissolved counter-ion of the mineral and/or a second oppositely charged peptide amphiphile, results in the rapid self assembly of the peptide-amphiphiles into a nanofiber gel and templated mineralization of the ions. Templated mineralization of the initially dissolved mineral cations and anions in the mixture occurs with preferential orientation of the mineral crystals along the fiber surfaces within the nanofiber gel. One advantage of the present invention is that it results in homogenous growth of the mineral throughout the nanofiber gel. Another advantage of the present invention is that the nanofiber gel formation and mineralization reactions occur in a single mixing step and under substantially neutral or physiological pH conditions. These homogeneous nanostructured composite materials are useful for medical applications especially the regeneration of damaged bone in mammals. This invention is directed to the synthesis of peptide-amphiphiles with more than one amphiphilic moment and to supramolecular compositions comprised of such multi-dimensional peptide-amphiphiles. Supramolecular compositions can be formed by self assembly of multi-dimensional peptide-amphiphiles by mixing them with a solution comprising a monovalent cation.

Stupp, Samuel I. (Chicago, IL); Beniash, Elia (Newton, MA); Hartgerink, Jeffrey D. (Pearland, TX)

2012-02-28T23:59:59.000Z

223

Rock, Mineral, Coal, Oil, and Gas Resources on State Lands (Montana)  

Broader source: Energy.gov [DOE]

This chapter authorizes and regulates prospecting permits and mining leases for the exploration and development of rock, mineral, oil, coal, and gas resources on state lands.

224

E-Print Network 3.0 - aqueous mineral carbonation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

7 Relative stability and significance of dawsonite and aluminum minerals in geologic carbon sequestration Summary: Relative stability and significance of dawsonite and...

225

Reactivity of iron-bearing minerals and CO2 sequestration: A...  

Office of Scientific and Technical Information (OSTI)

Reactivity of iron-bearing minerals and CO2 sequestration: A multi-disciplinary experimental approach Re-direct Destination: The reactivity of sandstones was studied under...

226

E-Print Network 3.0 - apatite structured minerals Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

calcic garnet and clinopyroxene, REE primarily occupy the structural position... and titanite i.e. minerals that preferentially incorporate ... Source: Arrhenius, Gustaf -...

227

Plutonium Oxidation and Subsequent Reduction by Mn (IV) Minerals  

SciTech Connect (OSTI)

Plutonium sorbed to rock tuff was preferentially associated with manganese oxides. On tuff and synthetic pyrolusite (Mn{sup IV}O{sub 2}), Pu(IV) or Pu(V) was initially oxidized, but over time Pu(IV) became the predominant oxidation state of sorbed Pu. Reduction of Pu(V/VI), even on non-oxidizing surfaces, is proposed to result from a lower Gibbs free energy of the hydrolyzed Pu(IV) surface species versus that of the Pu(V) or Pu(VI) surface species. This work suggests that despite initial oxidation of sorbed Pu by oxidizing surfaces to more soluble forms, the less mobile form of Pu, Pu(IV), will dominate Pu solid phase speciation during long term geologic storage. The safe design of a radioactive waste or spent nuclear fuel geologic repository requires a risk assessment of radionuclides that may potentially be released into the surrounding environment. Geochemical knowledge of the radionuclide and the surrounding environment is required for predicting subsurface fate and transport. Although difficult even in simple systems, this task grows increasingly complicated for constituents, like Pu, that exhibit complex environmental chemistries. The environmental behavior of Pu can be influenced by complexation, precipitation, adsorption, colloid formation, and oxidation/reduction (redox) reactions (1-3). To predict the environmental mobility of Pu, the most important of these factors is Pu oxidation state. This is because Pu(IV) is generally 2 to 3 orders of magnitude less mobile than Pu(V) in most environments (4). Further complicating matters, Pu commonly exists simultaneously in several oxidation states (5, 6). Choppin (7) reported Pu may exist as Pu(IV), Pu(V), or Pu(VI) oxic natural groundwaters. It is generally accepted that plutonium associated with suspended particulate matter is predominantly Pu(IV) (8-10), whereas Pu in the aqueous phase is predominantly Pu(V) (2, 11-13). The influence of the character of Mn-containing minerals expected to be found in subsurface repository environments on Pu oxidation state distributions has been the subject of much recent research. Kenney-Kennicutt and Morse (14), Duff et al. (15), and Morgenstern and Choppin (16) observed oxidation of Pu facilitated by Mn(IV)-bearing minerals. Conversely, Shaughnessy et al. (17) used X-ray Absorption near-edge spectroscopy (XANES) to show reduction of Pu(VI) by hausmannite (Mn{sup II}Mn{sub 2}{sup III}O{sub 4}) and manganite ({gamma}-Mn{sup III}OOH) and Kersting et al., (18) observed reduction of Pu(VI) by pyrolusite (Mn{sup IV}O{sub 2}). In this paper, we attempt to reconcile the apparently conflicting datasets by showing that Mn-bearing minerals can indeed oxidize Pu, however, if the oxidized species remains on the solid phase, the oxidation step competes with the formation of Pu(IV) that becomes the predominant solid phase Pu species with time. The experimental approach we took was to conduct longer term (approximately two years later) oxidation state analyses on the Pu sorbed to Yucca Mountain tuff (initial analysis reported by Duff et al., (15)) and measure the time-dependant changes in the oxidation state distribution of Pu in the presence of the Mn mineral pyrolusite.

KAPLAN, DANIEL

2005-09-13T23:59:59.000Z

228

Utilization of coal-associated minerals. Final report  

SciTech Connect (OSTI)

Under contract number DE-AS21-77ET10533 with the US-DOE several methods of utilizing coal associated by-products were examined for potential commercial use. Such use could transform a costly waste disposal situation into new materials for further use and could provide incentive for the adoption of new coal utilization processes. Several utilization processes appear to have merit and are recommended for further study. Each process is discussed separately in the text of this report. Common coal cleaning processes were also examined to determine the effect of such processes on the composition of by-products. Data obtained in this portion of the research effort are reported in the Appendix. Information of this type is required before utilization processes can be considered. A knowledge of the mineral composition of these materials is also required before even simple disposal methods can be considered.

Slonaker, J. F.; Akers, D. J.; Alderman, J. K.

1980-01-01T23:59:59.000Z

229

Uranium mineralization in fluorine-enriched volcanic rocks  

SciTech Connect (OSTI)

Several uranium and other lithophile element deposits are located within or adjacent to small middle to late Cenozoic, fluorine-rich rhyolitic dome complexes. Examples studied include Spor Mountain, Utah (Be-U-F), the Honeycomb Hills, Utah (Be-U), the Wah Wah Mountains, Utah (U-F), and the Black Range-Sierra Cuchillo, New Mexico (Sn-Be-W-F). The formation of these and similar deposits begins with the emplacement of a rhyolitic magma, enriched in lithophile metals and complexing fluorine, that rises to a shallow crustal level, where its roof zone may become further enriched in volatiles and the ore elements. During initial explosive volcanic activity, aprons of lithicrich tuffs are erupted around the vents. These early pyroclastic deposits commonly host the mineralization, due to their initial enrichment in the lithophile elements, their permeability, and the reactivity of their foreign lithic inclusions (particularly carbonate rocks). The pyroclastics are capped and preserved by thick topaz rhyolite domes and flows that can serve as a source of heat and of additional quantities of ore elements. Devitrification, vapor-phase crystallization, or fumarolic alteration may free the ore elements from the glassy matrix and place them in a form readily leached by percolating meteoric waters. Heat from the rhyolitic sheets drives such waters through the system, generally into and up the vents and out through the early tuffs. Secondary alteration zones (K-feldspar, sericite, silica, clays, fluorite, carbonate, and zeolites) and economic mineral concentrations may form in response to this low temperature (less than 200 C) circulation. After cooling, meteoric water continues to migrate through the system, modifying the distribution and concentration of the ore elements (especially uranium).

Burt, D.M.; Sheridan, M.F.; Bikun, J.; Christiansen, E.; Correa, B.; Murphy, B.; Self, S.

1980-09-01T23:59:59.000Z

230

Societal demand for increasing mineral resources Canada has made significant contributions  

E-Print Network [OSTI]

Societal demand for increasing mineral resources Canada has made significant contributions. The discovery of new mineral resources requires increasing risk, increasing costs, and increasingly effective Vancouver has long been a global leader continue to affect society through aspects as varied as high metal

Michelson, David G.

231

Global Mineral Resource Assessment Potash--A Global Overview of Evaporite-Related Potash  

E-Print Network [OSTI]

Global Mineral Resource Assessment Potash--A Global Overview of Evaporite-Related Potash Resources intentionally left blank. #12;Global Mineral Resource Assessment Michael L. Zientek, Jane M. Hammarstrom, and Kathleen M. Johnson, editors Potash--A Global Overview of Evaporite-Related Potash Resources, Including

Fleskes, Joe

232

Soil Tillage Influences on Soil Mineral Nitrogen and Nitrate Leaching in  

E-Print Network [OSTI]

Soil Tillage Influences on Soil Mineral Nitrogen and Nitrate Leaching in Swedish Arable Soils Ćsa Myrbeck Faculty of Natural Resources and Agricultural Sciences Department of Soil and Environment Uppsala field experiment, Paper III. (photo: J. Arvidsson) #12;Soil Tillage Influences on Soil Mineral Nitrogen

233

Borehole Miner - Extendible Nozzle Development for Radioactive Waste Dislodging and Retrieval from Underground Storage Tanks  

SciTech Connect (OSTI)

This report summarizes development of borehole-miner extendible-nozzle water-jetting technology for dislodging and retrieving salt cake, sludge} and supernate to remediate underground storage tanks full of radioactive waste. The extendible-nozzle development was based on commercial borehole-miner technology.

CW Enderlin; DG Alberts; JA Bamberger; M White

1998-09-25T23:59:59.000Z

234

Clay and non-clay minerals in the pharmaceutical industry Part I. Excipients and medical applications  

E-Print Network [OSTI]

Clay and non-clay minerals in the pharmaceutical industry Part I. Excipients and medical in the pharmaceutical industry as lubricants, desiccants, disintegrants, diluents, binders, pigments and opaci ers form 17 July 2009 Accepted 22 July 2009 Available online 29 July 2009 Keywords: Minerals Pharmaceutical

Ahmad, Sajjad

235

Review Article Clay and non-clay minerals in the pharmaceutical and cosmetic industries  

E-Print Network [OSTI]

Review Article Clay and non-clay minerals in the pharmaceutical and cosmetic industries Part II Pharmaceutical industry Cosmetic industry Active ingredients Physical and physico-chemical properties A wide range and variety of minerals are used in the pharmaceutical industry as active ingredients

Ahmad, Sajjad

236

U.S. GEOLOGICAL SURVEY--MINERALS INFORMATION 1 By Joyce A. Ober  

E-Print Network [OSTI]

sell lithium as mineral concentrate, brine, compound, data for lithium from a voluntary survey of U of the material to determine if sales of the mercury-contaminated material presented a risk to environmental its brine deposit in Silver Peak, NV (Cyprus Amax Minerals Co., 1997). In addition to its Nevada

237

Copyright: King Fahd University of Petroleum & Minerals; http://www.kfupm.edu.sa  

E-Print Network [OSTI]

© Copyright: King Fahd University of Petroleum & Minerals; http://www.kfupm.edu.sa On Optimal SYSTEMS AND APPLICATIONS, VOLS 1 AND 2; pp: 819-824; Vol: ## King Fahd University of Petroleum & Minerals http://www.kfupm.edu.sa Summary In today's online connected world, almost all corporate networks use

El-Alfy, El-Sayed

238

Spatially-Correlated Mass Spectrometric Analysis of Microbe-Mineral Interactions  

SciTech Connect (OSTI)

A new methodology for examining the interactions of microbes with heterogeneous minerals is presented. Imaging laser-desorption Fourier transform mass spectrometry was used to examine the colonization patterns of Burkholderia vietnamiensis (Burkholderia cepacia) G4 on a heterogeneous basalt sample. Depth-profile imaging found that the bacterium preferentially colonized the plagioclase mineral phases within the basalt.

Jill R. Scott; Beizhan Yan; Daphne L. Stoner

2006-11-01T23:59:59.000Z

239

Fibrous-clay mineral formation and soil evolution in Aridisols of northeastern Patagonia, Argentina  

E-Print Network [OSTI]

Fibrous-clay mineral formation and soil evolution in Aridisols of northeastern Patagonia, Argentina PatagĂłnico, CONICET, Avd. Brown s/n, 9120, Puerto Madryn, Chubut, Argentina b Departamento de EdafologĂ­a, EPS horizons; Chubut province of Argentina 1. Introduction Palygorskite and sepiolite are clay minerals

Ahmad, Sajjad

240

Electrical conductivity of minerals and rocks Shun-ichiro Karato1  

E-Print Network [OSTI]

1 Electrical conductivity of minerals and rocks Shun-ichiro Karato1 and Duojun Wang1,2 1 : Yale-Blackwell #12;2 SUMMARY Electrical conductivity of most minerals is sensitive to hydrogen (water) content, temperature, major element chemistry and oxygen fugacity. The influence of these parameters on electrical

Note: This page contains sample records for the topic "reid miner ncasi" 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

Minerals to Dairy Cows with Focus on Calcium and Magnesium Balance  

E-Print Network [OSTI]

Minerals to Dairy Cows with Focus on Calcium and Magnesium Balance Cecilia Kronqvist Faculty;Minerals to Dairy Cows with Focus on Calcium and Magnesium Balance Abstract Both clinical and subclinical deficiency of calcium and magnesium may cause problems in dairy cows. Clinical hypocalcaemia most commonly

242

ATOMIC-LEVEL IMAGING OF CO2 DISPOSAL AS A CARBONATE MINERAL: OPTIMIZING REACTION PROCESS DESIGN  

SciTech Connect (OSTI)

Fossil fuels, especially coal, can support the energy demands of the world for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Permanent and safe methods for CO{sub 2} capture and disposal/storage need to be developed. Mineralization of stationary-source CO{sub 2} emissions as carbonates can provide such safe capture and long-term sequestration. Mg-rich lamellar-hydroxide based minerals (e.g., brucite and serpentine) offer a class of widely available, low-cost materials, with intriguing mineral carbonation potential. Carbonation of such materials inherently involves dehydroxylation, which can disrupt the material down to the atomic level. As such, controlled dehydroxylation before and/or during carbonation may provide an important parameter for enhancing carbonation reaction processes. Mg(OH){sub 2} was chosen as the model material for investigating lamellar hydroxide mineral dehydroxylation/carbonation mechanisms due to (i) its structural and chemical simplicity, (ii) interest in Mg(OH){sub 2} gas-solid carbonation as a potentially cost-effective CO{sub 2} mineral sequestration process component, and (iii) its structural and chemical similarity to other lamellar-hydroxide-based minerals (e.g., serpentine-based minerals) whose carbonation reaction processes are being explored due to their low-cost CO{sub 2} sequestration potential. Fundamental understanding of the mechanisms that govern dehydroxylation/carbonation processes is essential for cost optimization of any lamellar-hydroxide-based mineral carbonation sequestration process.

M.J. McKelvy; R. Sharma; A.V.G. Chizmeshya; H. Bearat; R.W. Carpenter

2000-08-01T23:59:59.000Z

243

Structure and Dynamics of Monolayer Growth at Mineral-Water Interfaces  

E-Print Network [OSTI]

Structure and Dynamics of Monolayer Growth at Mineral-Water Interfaces Geri Richmond Department insights into structure and dynamics of these interfaces. The driving forces behind adsorption at mineral an important role. In this presentation I will describe our recent studies measuring the structure and dynamics

Richmond, Geraldine L.

244

An epidemiological study of salt miners in diesel and nondiesel mines  

SciTech Connect (OSTI)

A cross-sectional study of 5 NaCl mines and 259 miners addressed the following questions: 1) Is there an association of increased respiratory symptoms, radiographic findings, and reduced pulmonary function with exposure to nitrogen dioxide (NO2) and/or respirable particulate (RP) among these miners. 2) Is there increased morbidity of these miners compared to other working populations. Personal samples of NO2 and respirable particulate for jobs in each mine were used to estimate cumulative exposure. NO2 is used as a surrogate measure of diesel exposure. Cough was associated with age and smoking, dyspnea with age; neither symptom was associated with exposure (years worked, estimated cumulative NO2 or RP exposure). Phlegm was associated with age, smoking, and exposure. Reduced pulmonary function (FVC, FEV1, peak, flow, FEF50, FEF75) showed no association with exposure. There was one case of small rounded and one case of small irregular opacities; pneumoconiosis was not analyzed further. Compared to underground coal miners, above ground coal miners, potash miners, and nonmining workers, the study population after adjustment for age and smoking generally showed no increased prevalence of cough, phlegm, dyspnea, or obstruction (FEV1/FVC less than 0.7). Obstruction in younger salt miners and phlegm in older salt miners was elevated compared to nonmining workers. Mean predicted pulmonary function was reduced 2-4% for FEV1 and FVC, 7-13% for FEF50, and 18-22% for FEF75 below all comparison populations.

Gamble, J.; Jones, W.; Hudak, J.

1983-01-01T23:59:59.000Z

245

Mineral replacement rate of olivine by chrysotile and brucite under high1 alkaline conditions2  

E-Print Network [OSTI]

1 Mineral replacement rate of olivine by chrysotile and brucite under high1 alkaline conditions2 3.1016/j.jcrysgro.2012.02.040 #12;2 Abstract16 Olivine mineral replacement by serpentine is one major replaced by18 chrysotile and brucite under high alkaline conditions. In our study, olivine replacement19

Paris-Sud XI, Université de

246

Mineral paragenesis and textures associated with sandstone-hosted roll-front uranium deposits, NW China  

E-Print Network [OSTI]

, People's Republic of China c Northwest Institute of Uranium Geology, China National Nuclear CorporationMineral paragenesis and textures associated with sandstone-hosted roll-front uranium deposits, NW, Wuyiyi and Shihongtan sandstone-hosted roll-front uranium deposits, northwest China. The mineralization

Fayek, Mostafa

247

Nitrogen mineralization potentials of revegetated mixed lignite overburden in the Texas Gulf Coast  

E-Print Network [OSTI]

and Chemical Characteristics Analysis of Data. CHAPTER IV: RESULTS AND DISCUSSION. Physical Properties of Spoil and Native Soil. Nitrogen Mineralization Potentials and Rate Constants Nitrogen Pool Nitrification and Denitrification Most Probable Numbers.... Chemical Properties of Native Soil and Spoil Before and After Amendment. Chemical and Physical Properties of Sewage Sludge . Laboratory Incubation Study . Determination of Nitrogen Mineralized . Determining Populations of Nitrifying Bacteria, Physcial...

Hornby, William Joseph

1984-01-01T23:59:59.000Z

248

emissions: mineral carbonation and Finnish pulp and paper industry (CO2  

E-Print Network [OSTI]

CO2 emissions: mineral carbonation and Finnish pulp and paper industry (CO2 Nordic Plus) and Use carbonation processes. One aspect was to verify the possible use of mineral carbon- ation for the separation, utilisation and long-term storage of carbon dioxide (CO2) in the pulp and paper industry. The Geological

Zevenhoven, Ron

249

Analysis of stream sediment reconnaissance data for mineral resources from the Montrose NTMS Quadrangle, Colorado  

SciTech Connect (OSTI)

Multivariate statistical analysis to support the National Uranium Resource Evaluation and to evaluate strategic and other commercially important mineral resources was carried out on Hydrogeochemical and Stream Sediment Reconnaissance data from the Montrose quadrangle, Colorado. The analysis suggests that: (1) the southern Colorado Mineral Belt is an area favorable for uranium mineral occurrences; (2) carnotite-type occurrences are likely in the nose of the Gunnison Uplift; (3) uranium mineral occurrences may be present along the western and northern margins of the West Elk crater; (4) a base-metal mineralized area is associated with the Uncompahgre Uplift; and (5) uranium and base metals are associated in some areas, and both are often controlled by faults trending west-northwest and north.

Beyth, M.; Broxton, D.; McInteer, C.; Averett, W.R.; Stablein, N.K.

1980-06-01T23:59:59.000Z

250

Thermodynamic stabilities of U(VI) minerals: Estimated and observed relationships  

SciTech Connect (OSTI)

Gibbs free energies of formation ({Delta}G{degree}{sub f}) for several structurally related U(VI) minerals are estimated by summing the Gibbs energy contributions from component oxides. The estimated {Delta}G{degree}{sub f} values are used to construct activity-activity (stability) diagrams, and the predicted stability fields are compared with observed mineral occurrences and reaction pathways. With some exceptions, natural occurrences agree well with the mineral stability fields estimated for the systems SiO{sub 2}-CaO-UO{sub 3}-H{sub 2}O and CO{sub 2}-CaO-UO{sub 3}H{sub 2}O, providing confidence in the estimated thermodynamic values. Activity-activity diagrams are sensitive to small differences in {Delta}G{degree}{sub f} values, and mineral compositions must be known accurately, including structurally bound H{sub 2}O. The estimated {Delta}G{degree}{sub f} values are not considered reliable for a few minerals for two major reasons: (1) the structures of the minerals in question are not closely similar to those used to estimate the {Delta}G{sub f}* values of the component oxides, and/or (2) the minerals in question are exceptionally fine grained, leading to large surface energies that increase the effective mineral solubilities. The thermodynamic stabilities of uranium(VI) minerals are of interest for understanding the role of these minerals in controlling uranium concentrations in oxidizing groundwaters associated with uranium ore bodies, uranium mining and mill tailings and geological repositories for nuclear waste.

Finch, R.J. [Univ. of Manitoba, Winnipeg, Manitoba (Canada)

1996-12-31T23:59:59.000Z

251

Cloud condensation nucleus activity comparison of dry- and wet-generated mineral dust aerosol : the significance of soluble material  

E-Print Network [OSTI]

This study examines the interaction of clay mineral particles and water vapor to determine the conditions required for cloud droplet formation. Droplet formation conditions are investigated for two common clay minerals, ...

Garimella, Sarvesh

2014-01-01T23:59:59.000Z

252

Cloud condensation nucleus activity comparison of dry- and wet-generated mineral dust aerosol: the significance of soluble material  

E-Print Network [OSTI]

This study examines the interaction of clay mineral particles and water vapor for determining the conditions required for cloud droplet formation. Droplet formation conditions are investigated for two common clay minerals, ...

Garimella, Sarvesh

253

Communication : 9th CANMET [Canada Centre for Mineral and Energy Technology] /ACI [American Concrete Institute] (International Conference on Superplasticizers and other Chemical Admixtures in  

E-Print Network [OSTI]

Communication : 9th CANMET [Canada Centre for Mineral and Energy Technology] /ACI [American for Mineral and Energy Technology] /ACI [American Concrete Institute] (International Conference (Canada Centre for Mineral and Energy Technology) /ACI (American Concrete Institute) (International

Boyer, Edmond

254

DEVELOPMENT OF DEWATERING AIDS FOR MINERALS AND COAL FINES  

SciTech Connect (OSTI)

MCT has developed a suite of novel dewatering chemicals (or aids) that are designed to cause a decrease in the capillary pressures of the water trapped in a filter cake by (1) decreasing the surface tension of water, (2) increasing the contact angles of the particles to be dewatered, and (3) causing the particles to coagulate, all at the same time. The decrease in capillary pressure in turn causes an increase in the rate filtration, an increase in throughput, and a decrease in pressure drop requirement for filtration. The reagents are used frequently as blends of different chemicals in order to bring about the changes in all of the process variables noted above. The minerals and coal samples tested in the present work included copper sulfide, lead sulfide, zinc sulfide, kaolin clay, talc, and silica. The laboratory-scale test work included studies of reagent types, drying cycle times, cake thickness, slurry temperature, conditioning intensity and time, solid content, and reagent dosages. To better understand the mechanisms involved, fundamental studies were also conducted. These included the measurements of the contact angles of the particles to be dewatered (which are the measures of particle hydrophobicity) and the surface tensions of the filtrates produced from dewatering tests. The results of the laboratory-scale filtration experiments showed that the use of the novel dewatering aids can reduce the moistures of the filter cake by 30 to 50% over what can be achieved using no dewatering aids. In many cases, such high levels of moisture reductions are sufficient to obviate the needs for thermal drying, which is costly and energy intensive. Furthermore, the use of the novel dewatering aids cause a substantial increase in the kinetics of dewatering, which in turn results in increased throughput. As a result of these technological advantages, the novel dewatering aids have been licensed to Nalco, which is one of the largest mining chemicals companies of the world. At least one mineral company is currently using the technology in full-scale plant operation, which has resulted in the shutdown of a thermal dryer.

Roe-Hoam Yoon; Ramazan Asmatulu; Ismail Yildirim; William Jansen; Jinmig Zhang; Brad Atkinson; Jeff Havens

2004-07-01T23:59:59.000Z

255

Degradation of dome cutting minerals in Hanford waste  

SciTech Connect (OSTI)

At the Hanford Tank Farms, recent changes in retrieval technology require cutting new risers in several single-shell tanks. The Hanford Tank Farm Operator is using water jet technology with abrasive silicate minerals such as garnet or olivine to cut through the concrete and rebar dome. The abrasiveness of these minerals, which become part of the high-level waste stream, may enhance the erosion of waste processing equipment. However, garnet and olivine are not thermodynamically stable in Hanford waste, slowly degrading over time. How likely these materials are to dissolve completely in the waste before the waste is processed in the Waste Treatment and Immobilization Plant can be evaluated using theoretical analysis for olivine and collected direct experimental evidence for garnet. Based on an extensive literature study, a large number of primary silicates decompose into sodalite and cancrinite when exposed to Hanford waste. Given sufficient time, the sodalite also degrades into cancrinite. Even though cancrinite has not been directly added to any Hanford tanks during process times, it is the most common silicate observed in current Hanford waste. By analogy, olivine and garnet are expected to ultimately also decompose into cancrinite. Garnet used in a concrete cutting demonstration was immersed in a simulated supernate representing the estimated composition of the liquid retrieving waste from Hanford tank 241-C-107 at both ambient and elevated temperatures. This simulant was amended with extra NaOH to determine if adding caustic would help enhance the degradation rate of garnet. The results showed that the garnet degradation rate was highest at the highest NaOH concentration and temperature. At the end of 12 weeks, however, the garnet grains were mostly intact, even when immersed in 2 molar NaOH at 80 deg C. Cancrinite was identified as the degradation product on the surface of the garnet grains. In the case of olivine, the rate of degradation in the high-pH regimes of a waste tank is expected to depend on two main parameters: carbonate is expected to slow olivine degradation rates, whereas hydroxide is expected to enhance olivine dissolution rates. Which of these two competing dissolution drivers will have a larger impact on the dissolution rate in the specific environment of a waste tank is currently not identifiable. In general, cancrinite is much smaller and less hard than either olivine or garnet, so would be expected to be less erosive to processing equipment. Complete degradation of either garnet or olivine prior to being processed at the Waste Treatment and Immobilization Plant cannot be confirmed, however.

Reynolds, Jacob G.; Huber, Heinz J.; Cooke, Gary A.

2013-01-11T23:59:59.000Z

256

Degradation of Dome Cutting Minerals in Hanford Waste - 13100  

SciTech Connect (OSTI)

At the Hanford Tank Farms, recent changes in retrieval technology require cutting new risers in several single-shell tanks. The Hanford Tank Farm Operator is using water jet technology with abrasive silicate minerals such as garnet or olivine to cut through the concrete and rebar dome. The abrasiveness of these minerals, which become part of the high-level waste stream, may enhance the erosion of waste processing equipment. However, garnet and olivine are not thermodynamically stable in Hanford waste, slowly degrading over time. How likely these materials are to dissolve completely in the waste before the waste is processed in the Waste Treatment and Immobilization Plant can be evaluated using theoretical analysis for olivine and collected direct experimental evidence for garnet. Based on an extensive literature study, a large number of primary silicates decompose into sodalite and cancrinite when exposed to Hanford waste. Given sufficient time, the sodalite also degrades into cancrinite. Even though cancrinite has not been directly added to any Hanford tanks during process times, it is the most common silicate observed in current Hanford waste. By analogy, olivine and garnet are expected to ultimately also decompose into cancrinite. Garnet used in a concrete cutting demonstration was immersed in a simulated supernate representing the estimated composition of the liquid retrieving waste from Hanford tank 241-C-107 at both ambient and elevated temperatures. This simulant was amended with extra NaOH to determine if adding caustic would help enhance the degradation rate of garnet. The results showed that the garnet degradation rate was highest at the highest NaOH concentration and temperature. At the end of 12 weeks, however, the garnet grains were mostly intact, even when immersed in 2 molar NaOH at 80 deg. C. Cancrinite was identified as the degradation product on the surface of the garnet grains. In the case of olivine, the rate of degradation in the high-pH regimes of a waste tank is expected to depend on two main parameters: carbonate is expected to slow olivine degradation rates, whereas hydroxide is expected to enhance olivine dissolution rates. Which of these two competing dissolution drivers will have a larger impact on the dissolution rate in the specific environment of a waste tank is currently not identifiable. In general, cancrinite is much smaller and less hard than either olivine or garnet, so would be expected to be less erosive to processing equipment. Complete degradation of either garnet or olivine prior to being processed at the Waste Treatment and Immobilization Plant cannot be confirmed, however. (authors)

Reynolds, Jacob G.; Cooke, Gary A.; Huber, Heinz J. [Washington River Protection Solutions, LLC, P.O. Box 850, Richland, WA 99352 (United States)] [Washington River Protection Solutions, LLC, P.O. Box 850, Richland, WA 99352 (United States)

2013-07-01T23:59:59.000Z

257

TITANIUM MINERAL CONCENTRATES1 (Data in thousand metric tons of contained TiO2 unless otherwise noted)  

E-Print Network [OSTI]

and pigment industries. Global production of titanium mineral concentrates was expected to increase during half of 2015. In Western Australia, the heavy-mineral resource, data for at the Keysbrook project were172 TITANIUM MINERAL CONCENTRATES1 (Data in thousand metric tons of contained TiO2 unless otherwise

258

PUBLISHED BY THE AMERICAN ARACHNOLOGICAL SOCIETY A new approach to examining scorpion peg sensilla: the mineral oil flood technique  

E-Print Network [OSTI]

an improved method of chemical stimulus delivery called the mineral oil flood technique, which uses non: the mineral oil flood technique Elizabeth D. Knowlton and Douglas D. Gaffin: Department of Zoology, University peg sensilla: the mineral oil flood technique Elizabeth D. Knowlton and Douglas D. Gaffin: Department

Gaffin, Doug

259

Relations between Au / Sn-W mineralizations and late hercynian granite: Preliminary results from the Schistose Domain of Galicia-  

E-Print Network [OSTI]

Relations between Au / Sn-W mineralizations and late hercynian granite: Preliminary results from, mesothermal mineralization, late hercynian granites, hydrothermalism, Galicia, Spain ABSTRACT : Au and W-Sn mineralization of the Schistose Domain of Galicia-TrĂĄs-os-Montes are spatially related to late hercynian granites

Boyer, Edmond

260

O and Pb isotopic analyses of uranium minerals by ion microprobe and UPb ages from the Cigar Lake deposit  

E-Print Network [OSTI]

O and Pb isotopic analyses of uranium minerals by ion microprobe and U­Pb ages from the Cigar Lake intergrown uranium minerals and oxygen isotopic analyes of uraninite from the unconformity-type Cigar Lake uranium deposit. Secondary uranium minerals intergrown with uraninite, such as coffinite, USiO4ÁnH2O

Fayek, Mostafa

Note: This page contains sample records for the topic "reid miner ncasi" 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

Electrical properties of dispersions of graphene in mineral oil  

SciTech Connect (OSTI)

Dispersions of graphene in mineral oil have been prepared and electrical conductivity and permittivity have been measured. The direct current (DC) conductivity of the dispersions depends on the surface characteristics of the graphene platelets and followed a percolation model with a percolation threshold ranging from 0.05 to 0.1?wt. %. The difference in DC conductivities can be attributed to different states of aggregation of the graphene platelets and to the inter-particle electron transfer, which is affected by the surface radicals. The frequency-dependent conductivity (?(?)) and permittivity (?(?)) were also measured. The conductivity of dispersions with particle contents much greater than the percolation threshold remains constant and equal to the DC conductivity at low frequencies ? with and followed a power-law ?(?)???{sup s} dependence at very high frequencies with s?0.9. For dispersions with graphene concentration near the percolation threshold, a third regime was displayed at intermediate frequencies indicative of interfacial polarization consistent with Maxwell-Wagner effect typically observed in mixtures of two (or more) phases with very distinct electrical and dielectric properties.

Monteiro, O. R., E-mail: othon.monteiro@bakerhughes.com [Baker Hughes, 14990 Yorktown Plaza Dr., Houston, Texas 77040 (United States)

2014-02-03T23:59:59.000Z

262

Utilization of coal associated minerals. Quarterly report No. 11, April 1-June 30, 1980  

SciTech Connect (OSTI)

The purpose of this research program is to examine the effects of coal mineral materials on coal waste by-product utilization and to investigate new and improved methods for the utilization of waste by-products from cleaning, combustion and conversion processing of coal. The intermediate objectives include: (1) the examination of the effects of cleaning, gasification and combustion on coal mineral materials; and (2) the changes which occur in the coal wastes as a result of both form and distribution of mineral materials in feed coals in conjunction with the coal treatment effects resulting from coal cleaning or either gasification or combustion.

Slonaker, J. F.; Akers, D. J.; Alderman, J. K.

1980-08-29T23:59:59.000Z

263

Micro-Analysis of Actinide Minerals for Nuclear Forensics and Treaty Verification  

SciTech Connect (OSTI)

Micro-Raman spectroscopy has been demonstrated to be a viable tool for nondestructive determination of the crystal phase of relevant minerals. Collecting spectra on particles down to 5 microns in size was completed. Some minerals studied were weak scatterers and were better studied with the other techniques. A decent graphical software package should easily be able to compare collected spectra to a spectral library as well as subtract out matrix vibration peaks. Due to the success and unequivocal determination of the most common mineral false positive (zircon), it is clear that Raman has a future for complementary, rapid determination of unknown particulate samples containing actinides.

M. Morey, M. Manard, R. Russo, G. Havrilla

2012-03-22T23:59:59.000Z

264

Geophysical characterization of mineral and energy resources at Yucca Mountain and vicinity, Nevada  

SciTech Connect (OSTI)

This report was prepared for the Yucca Mountain Project (Department of Energy) as part of the study of the mineral and energy resource potential of the site (Activity 8.3.1.9.2.1.5) under the Human Interference part of the program. Most of the 1991 geophysical scoping activities in the Mineral Resources Study were involved with the acquisition and evaluation of existing data. This report presents an overview of how geophysical data (existing and planned) will aid in the evaluation of the potential for mineral and energy resource potential at Yucca Mountain and vicinity.

Langenheim, V.E.; Oliver, H.W. [Geological Survey, Menlo Park, CA (United States); Hoover, D.B. [Geological Survey, Denver, CO (United States)

1991-12-31T23:59:59.000Z

265

Soil Nitrogen Mineralization Potential for Improved Fertilizer Recommendations and Decreased Nitrate Contamination of Groundwater  

E-Print Network [OSTI]

In order to prevent overfertilization, which could lead to groundwater contamination, rapid and accurate soil testing procedures are needed to evaluate agricultural surface soils for their potential to mineralize C and N. Our objectives were...

Franzluebbers, Alan; Haney, Richard; Hons, Frank

266

Application Of Fluid Inclusion And Rock-Gas Analysis In Mineral...  

Open Energy Info (EERE)

mineral surfaces by heating. The most abundant of these gases, besides H2O, are usually CO2, CH4, CO and N2. We have used a gas chromatograph to analyze these gases in fluid...

267

Department of Energy and Mineral Engineering Spring 2013 Solar Innovations -HVAC and Waste Stream Analysis  

E-Print Network [OSTI]

PENNSTATE Department of Energy and Mineral Engineering Spring 2013 Solar Innovations - HVAC and Waste Stream Analysis Overview There are two problems that were voiced by Solar Innovations, HVAC system

Demirel, Melik C.

268

Resource Management Services: Mineral Resources, Parts 550-559 (New York)  

Broader source: Energy.gov [DOE]

This section establishes a Bureau of Mineral Resources within the Department of Environmental Conservation, which has the authority to regulate the exploration and mining for oil and gas resources...

269

E-Print Network 3.0 - actinide-bearing mineral waste Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Medicine 82 I N F O R M A T I O N N O T E Use of Sewage Summary: too. USE OF SEWAGE SLUDGE AND COMPOST ON MINERAL AND BROWNFIELD LAND* Application of organic wastes... or...

270

Leaching of antimony from polyethylene terephthalate (PET) bottles into mineral water  

E-Print Network [OSTI]

Leaching of antimony from polyethylene terephthalate (PET) bottles into mineral water Szilvia April 2009 Available online 21 May 2009 Keywords: Antimony Water Leaching Polyethylene terephthalate SODIS The Sb leaching from polyethylene terephthalate (PET) package material into 10 different brands

Short, Daniel

271

Dept of Mathematics and Statistics King Fahd University of Petroleum and Minerals  

E-Print Network [OSTI]

Seminar Dept of Mathematics and Statistics King Fahd University of Petroleum and Minerals Presenter relation can be used to calculate variance of a few more observations. Some other characteristics

Omar, Mohammad H.

272

Dept of Mathematics and Statistics King Fahd University of Petroleum and Minerals  

E-Print Network [OSTI]

Seminar Dept of Mathematics and Statistics King Fahd University of Petroleum and Minerals Presenter observations are of the same sign. They will be used to find bounds for some well-known sample statistics: z

Omar, Mohammad H.

273

Dept of Mathematics and Statistics King Fahd University of Petroleum and Minerals  

E-Print Network [OSTI]

Seminar Dept of Mathematics and Statistics King Fahd University of Petroleum and Minerals Presenter outcome in sampling without replacement is shown to have a combinatorial form. Then it is used

Omar, Mohammad H.

274

Race/ethnic differences in bone mineral densities in older men  

E-Print Network [OSTI]

the Baltimore men’s osteoporosis study. J Bone Miner Res 13.center genetic study of osteoporosis. Osteoporos Int 17:125–Leung Jockey Club Centre for Osteoporosis Care and Control,

2010-01-01T23:59:59.000Z

275

Mineral Sequestration of Carbon Dixoide in a Sandstone-Shale System  

E-Print Network [OSTI]

Clays and Clay Minerals, 39(4), 355-361. Hower, J. ,Eslinger, E.V. , Hower, M.E. , Perry, E.A. , 1976. Mechanismanalyses such as those by Hower et al. (1976), for the

Xu, Tianfu; Apps, John A.; Pruess, Karsten

2004-01-01T23:59:59.000Z

276

Oil, Gas, and Minerals, Exploration and Production, Lease of Public Land (Iowa)  

Broader source: Energy.gov [DOE]

The state, counties and cities and other political subdivisions may lease publicly owned lands for the purpose of oil or gas or metallic minerals exploration and production.  Any such leases shall...

277

E-Print Network 3.0 - au ag-polymetallic mineralization Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reno Collection: Geosciences Page: << < 1 2 3 4 5 > >> Page: << < 1 2 3 4 5 > >> 81 geology and Ranger 1 open-pit uranium mine in Australia Summary: ;Uranium minerals: The...

278

E-Print Network 3.0 - accessory mineral growth Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

0003-004X001112157305.00 1573 Summary: diopside (Di), potassium feldspar (Kfs), titanite (Ttn), and a variety of accessory minerals as well... contained Bad and a variety of...

279

E-Print Network 3.0 - accessory minerals zirconolite Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2004 0003-004X041112175205.00 1752 Summary: , Manitoba R3T 2N2, Canada ABSTRACT Titanite is a common accessory mineral in silicocarbonatite from the... acidic pH, and...

280

Vascular flora and vegetation of granite outcrops in the Central Mineral Region of Texas  

E-Print Network [OSTI]

of Texas Location of the Central Mineral Region, indicating areas underlain by Precambrian granitic tock 13 Location of 20 granite outcrops in the Central Mineral Region of Texas 20 Climate diagrams for Mason, Llano, Burnet, and Gillespie Counties...& Texas 23 Climate diagrams for Mason, Llano, Burnet, and Gillespie Counties, Texas 25 Distribution of 2 granite outcrop endemics in the area of study and in the state of Texas 60 Distribution of Pilularia americana 63 Distribution of 2 granite...

Walters, Terrence Wesley

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

High gradient magnetic separation of iron oxide minerals from soil clays  

E-Print Network [OSTI]

HIGH GRADIENT MAGNETIC SEPARATION OF IRON OXIDE MINERALS FROM SOIL CLAYS A Thesis by DARRELL GENE SCHULZE Submitted to the Graduate College of Texas AIM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... December 1977 Major Subject: Soil Science HIGH GRADIENT MAGNETIC SEPARATION OF IRON OXIDE MINERALS FROM SOIL CLAYS A Thesis DARRELL GENE SCHULZE Approved as to style and content by: (Chairman of C ittee) epartm t) j (Member) (Membe December 1977...

Schulze, Darrell Gene

1977-01-01T23:59:59.000Z

282

Enhancement of Growth Performance and Bone Mineralization in Market Broilers through Dietary Enzymes  

E-Print Network [OSTI]

. In Experiment 1, a 35-day grow out trial was conducted to investigate the effect of three commercially available phytase enzymes on growth performance and bone mineralization in phosphorus deficient corn/soy based diets. Increasing the level of available... phosphorus (aP) in the control diets resulted in improved bird performance and bone ash data. The presence of dietary phytase in phosphorus deficient diets resulted in improvements in growth parameters and bone mineralization. Regression analysis...

Coppedge, Jacob Ryan

2012-02-14T23:59:59.000Z

283

Magnesium and pyridoxine intake and mineral content of selected tissues and physical development in rats  

E-Print Network [OSTI]

MAGNESIUM AND PYRIDOXINE INTAKE MINERAL CONTENT OF SELECTED TISSUES PHYSICAL DEVELOPMENT IN RATS A Thesis by SU S AN ELA I NE EDGAR Submitted to the Graduate College of Texas A8rM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1986 Major Subject: Nutrition MAGNESIUM AND PYRIDOXINE INTAKE MINERAL CONTENT OF SELECTED TISSUES PHYS ICAL DEVELOPMENT IN RATS A Thesis by SUSAN ELAINE EDGAR Approved as to style and content by: 'KAREN...

Edgar, Susan Elaine

2012-06-07T23:59:59.000Z

284

FLUIDIZED BED STEAM REFORMED MINERAL WASTE FORMS: CHARACTERIZATION AND DURABILITY TESTING  

SciTech Connect (OSTI)

Fluidized Bed Steam Reforming (FBSR) is being considered as a potential technology for the immobilization of a wide variety of high sodium low activity wastes (LAW) such as those existing at the Hanford site, at the Idaho National Laboratory (INL), and the Savannah River Site (SRS). The addition of clay, charcoal, and a catalyst as co-reactants with the waste denitrates the aqueous wastes and forms a granular mineral waste form that can subsequently be made into a monolith for disposal if necessary. The waste form produced is a multiphase mineral assemblage of Na-Al-Si (NAS) feldspathoid minerals with cage and ring structures and iron bearing spinel minerals. The mineralization occurs at moderate temperatures between 650-750 C in the presence of superheated steam. The cage and ring structured feldspathoid minerals atomically bond radionuclides like Tc-99 and Cs-137 and anions such as SO{sub 4}, I, F, and Cl. The spinel minerals stabilize Resource Conservation and Recovery Act (RCRA) hazardous species such as Cr and Ni. Granular mineral waste forms were made from (1) a basic Hanford Envelope A low activity waste (LAW) simulant and (2) an acidic INL simulant commonly referred to as sodium bearing waste (SBW) in pilot scale facilities at the Science Applications International Corporation (SAIC) Science and Technology Applications Research (STAR) facility in Idaho Falls, ID. The FBSR waste forms were characterized and the durability tested via ASTM C1285 (Product Consistency Test), the Environmental Protection Agency (EPA) Toxic Characteristic Leaching Procedure (TCLP), and the Single Pass Flow Through (SPFT) test. The results of the SPFT testing and the activation energies for dissolution are discussed in this study.

Jantzen, C; Troy Lorier, T; John Pareizs, J; James Marra, J

2006-12-06T23:59:59.000Z

285

FLUIDIZED BED STEAM REFORMED MINERAL WASTE FORMS: CHARACTERIZATION AND DURABILITY TESTING  

SciTech Connect (OSTI)

Fluidized Bed Steam Reforming (FBSR) is being considered as a potential technology for the immobilization of a wide variety of high sodium low activity wastes (LAW) such as those existing at the Hanford site, at the Idaho National Laboratory (INL), and the Savannah River Site (SRS). The addition of clay, charcoal, and a catalyst as co-reactants with the waste denitrates the aqueous wastes and forms a granular mineral waste form that can subsequently be made into a monolith for disposal if necessary. The waste form produced is a multiphase mineral assemblage of Na-Al-Si (NAS) feldspathoid minerals with cage and ring structures and iron bearing spinel minerals. The mineralization occurs at moderate temperatures between 650-750 C in the presence of superheated steam. The cage and ring structured feldspathoid minerals atomically bond radionuclides like Tc-99 and Cs-137 and anions such as SO4, I, F, and Cl. The spinel minerals stabilize Resource Conservation and Recovery Act (RCRA) hazardous species such as Cr and Ni. Granular mineral waste forms were made from (1) a basic Hanford Envelope A low-activity waste (LAW) simulant and (2) an acidic INL simulant commonly referred to as sodium bearing waste (SBW) in pilot scale facilities at the Science Applications International Corporation (SAIC) Science and Technology Applications Research (STAR) facility in Idaho Falls, ID. The FBSR waste forms were characterized and the durability tested via ASTM C1285 (Product Consistency Test), the Environmental Protection Agency (EPA) Toxic Characteristic Leaching Procedure (TCLP), and the Single Pass Flow Through (SPFT) test. The results of the SPFT testing and the activation energies for dissolution are discussed in this study.

Jantzen, C; Troy Lorier, T; John Pareizs, J; James Marra, J

2007-03-31T23:59:59.000Z

286

Clay minerals of recent marine sediments to the west of the Mississippi Delta  

E-Print Network [OSTI]

CLAY MINERALS OF RECENT MARINE SEDIMENTS 10 THE WEST OP THE MISSISSIPPI DKLTA A Dissertation By RAYMOND ERANCIS McALLI9TER> Jr. Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY IN OCEANOGRAPHY May* 1958 Major Subject: Geological Oceanography CLAY MINERALS OF RECENT MARINE SEDIMENTS TO THE WEST OF THE MISSISSIPPI DELTA A Dissertation RAYMOND FRANCIS McALLISTER, Jr. Approved...

McAllister, Raymond Francis

1958-01-01T23:59:59.000Z

287

ATOMIC-LEVEL IMAGING OF CO2 DISPOSAL AS A CARBONATE MINERAL: OPTIMIZING REACTION PROCESS DESIGN  

SciTech Connect (OSTI)

Fossil fuels, especially coal, can support the energy demands of the world for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Permanent and safe methods for CO{sub 2} capture and disposal/storage need to be developed. Mineralization of stationary-source CO{sub 2} emissions as carbonates can provide such safe capture and long-term sequestration. Mg-rich lamellar-hydroxide based minerals (e.g., brucite and serpentine) offer a class of widely available, low-cost materials, with intriguing mineral carbonation potential. Carbonation of such materials inherently involves dehydroxylation, which can disrupt the material down to the atomic level. As such, controlled dehydroxylation, before and/or during carbonation, may provide an important parameter for enhancing carbonation reaction processes. Mg(OH){sub 2} was chosen as the model material for investigating lamellar hydroxide mineral dehydroxylation/carbonation mechanisms due to (1) its structural and chemical simplicity, (2) interest in Mg(OH){sub 2} gas-solid carbonation as a potentially cost-effective CO{sub 2} mineral sequestration process component, and (3) its structural and chemical similarity to other lamellar-hydroxide-based minerals (e.g., serpentine-based minerals) whose carbonation reaction processes are being explored due to their low-cost CO{sub 2} sequestration potential. Fundamental understanding of the mechanisms that govern dehydroxylation/carbonation processes is essential for minimizing the cost of any lamellar-hydroxide-based mineral carbonation sequestration process. This final report covers the overall progress of this grant.

M.J. McKelvy; R. Sharma; A.V.G. Chizmeshya; H. Bearat; R.W. Carpenter

2002-11-01T23:59:59.000Z

288

ATOMIC-LEVEL IMAGING OF CO2 DISPOSAL AS A CARBONATE MINERAL: OPTIMIZING REACTION PROCESS DESIGN  

SciTech Connect (OSTI)

Fossil fuels, especially coal, can support the energy demands of the world for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Permanent and safe methods for CO{sub 2} capture and disposal/storage need to be developed. Mineralization of stationary-source CO{sub 2} emissions as carbonates can provide such safe capture and long-term sequestration. Mg-rich lamellar-hydroxide based minerals (e.g., brucite and serpentine) offer a class of widely available, low-cost materials, with intriguing mineral carbonation potential. Carbonation of such materials inherently involves dehydroxylation, which can disrupt the material down to the atomic level. As such, controlled dehydroxylation, before and/or during carbonation, may provide an important parameter for enhancing carbonation reaction processes. Mg(OH){sub 2} was chosen as the model material for investigating lamellar hydroxide mineral dehydroxylation/carbonation mechanisms due to (i) its structural and chemical simplicity, (ii) interest in Mg(OH){sub 2} gas-solid carbonation as a potentially cost-effective CO{sub 2} mineral sequestration process component, and (iii) its structural and chemical similarity to other lamellar-hydroxide-based minerals (e.g., serpentine-based minerals) whose carbonation reaction processes are being explored due to their low-cost CO{sub 2} sequestration potential. Fundamental understanding of the mechanisms that govern dehydroxylation/carbonation processes is essential for minimizing the cost of any lamellar-hydroxide-based mineral carbonation sequestration process. This report covers the third year progress of this grant, as well as providing an integrated overview of the progress in years 1-3, as we have been granted a one-year no-cost extension to wrap up a few studies and publications to optimize project impact.

M.J. McKelvy; R. Sharma; A.V.G. Chizmeshya; H. Bearat; R.W. Carpenter

2001-10-01T23:59:59.000Z

289

Absorption and retention of different chemical forms of trace minerals by mature horses  

E-Print Network [OSTI]

Micro-minerals are gaining greater importance in ration balancing so as to enhance the growth and development of a wide range of tissue types in horses (Jackson, 1998; Ott and Johnson, 2001). Several different chemical formulations of trace mineral... in the oxidative phosphorylation process in mitochondria (Jackson, 1998). Zinc appears in numerous physiologic roles in the body. In concert with copper, zinc has been tied to bone formation and epithelial integrity, including hoof growth (Ott and Johnson, 2001...

Wagner, Elizabeth Lynn

2003-01-01T23:59:59.000Z

290

Application of the Modified Methylene Blue Test to Detect Clay Minerals in Coarse Aggregate Fines  

E-Print Network [OSTI]

APPLICATION OF THE MODIFIED METHYLENE BLUE TEST TO DETECT CLAY MINERALS IN COARSE AGGREGATE FINES A Thesis by BRANDON THOMAS PITRE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...: Civil Engineering Copyright 2012 Brandon Thomas Pitre ii ABSTRACT The purpose of this study was to implement a new, rapid field method to effectively and accurately detect harmful clay minerals in aggregate fines by using the modified...

Pitre, Brandon

2012-12-04T23:59:59.000Z

291

Synchrotron based mass spectrometry to investigate the molecular properties of mineral-organic associations  

SciTech Connect (OSTI)

Soil organic matter (OM) is important because its decay drives life processes in the biosphere. Analysis of organic compounds in geological systems is difficult because of their intimate association with mineral surfaces. To date there is no procedure capable of quantitatively separating organic from mineral phases without creating artifacts or mass loss. Therefore, analytical techniques that can (a) generate information about both organic and mineral phases simultaneously and (b) allow the examination of predetermined high-interest regions of the sample as opposed to conventional bulk analytical techniques are valuable. Laser Desorption Synchrotron Postionization (synchrotron-LDPI) mass spectrometry is introduced as a novel analytical tool to characterize the molecular properties of organic compounds in mineral-organic samples from terrestrial systems, and it is demonstrated that when combined with Secondary Ion Mass Spectrometry (SIMS), can provide complementary information on mineral composition. Mass spectrometry along a decomposition gradient in density fractions, verifies the consistency of our results with bulk analytical techniques. We further demonstrate that by changing laser and photoionization energies, variations in molecular stability of organic compounds associated with mineral surfaces can be determined. The combination of synchrotron-LDPI and SIMS shows that the energetic conditions involved in desorption and ionization of organic matter may be a greater determinant of mass spectral signatures than the inherent molecular structure of the organic compounds investigated. The latter has implications for molecular models of natural organic matter that are based on mass spectrometric information.

Liu, Suet Yi; Kleber, Markus; Takahashi, Lynelle K.; Nico, Peter; Keiluweit, Marco; Ahmed, Musahid

2013-04-01T23:59:59.000Z

292

Mineral Sequestration of Carbon Dixoide in a Sandstone-Shale System  

SciTech Connect (OSTI)

A conceptual model of CO2 injection in bedded sandstone-shale sequences has been developed using hydrogeologic properties and mineral compositions commonly encountered in Gulf Coast sediments. Numerical simulations were performed with the reactive fluid flow and geochemical transport code TOUGHREACT to analyze mass transfer between sandstone and shale layers and CO2 immobilization through carbonate precipitation. Results indicate that most CO2 sequestration occurs in the sandstone. The major CO2 trapping minerals are dawsonite and ankerite. The CO2 mineral-trapping capacity after 100,000 years reaches about 90 kg per cubic meter of the medium. The CO2 trapping capacity depends on primary mineral composition. Precipitation of siderite and ankerite requires Fe+2 supplied mainly by chlorite and some by hematite dissolution and reduction. Precipitation of dawsonite requires Na+ provided by oligoclase dissolution. The initial abundance of chlorite and oligoclase therefore affects the CO2 mineral trapping capacity. The sequestration time required depends on the kinetic rate of mineral dissolution and precipitation. Dawsonite reaction kinetics is not well understood, and sensitivity regarding the precipitation rate was examined. The addition of CO2 as secondary carbonates results in decreased porosity. The leaching of chemical constituents from the interior of the shale causes slightly increased porosity. The limited information currently available for the mineralogy of natural high-pressure CO2 gas reservoirs is also generally consistent with our simulation. The ''numerical experiments'' give a detailed understanding of the dynamic evolution of a sandstone-shale geochemical system.

Xu, Tianfu; Apps, John A.; Pruess, Karsten

2004-07-09T23:59:59.000Z

293

Lab 1 Mineral Utility Lab notes The physical world is made up of a vast number of different minerals. Later on in  

E-Print Network [OSTI]

Lake City, Utah which removes 225,000 metric tons of rock a day, 20% of which is ore. Quarries: Sand quarries. Rocks like granite and marble are used as decorative rocks on the outside of buildings, or even of removing a mineral from its ore. Quarried rocks may simply need crushing, grinding, and sizing before use

Li, X. Rong

294

ENHANCING THE ATOMIC-LEVEL UNDERSTANDING OF CO2 MINERAL SEQUESTRATION MECHANISMS VIA ADVANCED COMPUTATIONAL MODELING  

SciTech Connect (OSTI)

Fossil fuels currently provide 85% of the world's energy needs, with the majority coming from coal, due to its low cost, wide availability, and high energy content. The extensive use of coal-fired power assumes that the resulting CO2 emissions can be vented to the atmosphere. However, exponentially increasing atmospheric CO2 levels have brought this assumption under critical review. Over the last decade, this discussion has evolved from whether exponentially increasing anthropogenic CO2 emissions will adversely affect the global environment, to the timing and magnitude of their impact. A variety of sequestration technologies are being explored to mitigate CO2 emissions. These technologies must be both environmentally benign and economically viable. Mineral carbonation is an attractive candidate technology as it disposes of CO2 as geologically stable, environmentally benign mineral carbonates, clearly satisfying the first criteria. The primary challenge for mineral carbonation is cost-competitive process development. CO2 mineral sequestration--the conversion of stationary-source CO2 emissions into mineral carbonates (e.g., magnesium and calcium carbonate, MgCO3 and CaCO3)--has recently emerged as one of the most promising sequestration options, providing permanent CO2 disposal, rather than storage. In this approach a magnesium-bearing feedstock mineral (typically serpentine or olivine; available in vast quantities globally) is specially processed and allowed to react with CO2 under controlled conditions. This produces a mineral carbonate which (1) is environmentally benign, (2) already exists in nature in quantities far exceeding those that could result from carbonating the world's known fossil fuel reserves, and (3) is stable on a geological time scale. Minimizing the process cost via optimization of the reaction rate and degree of completion is the remaining challenge. As members of the DOE/NETL managed National Mineral Sequestration Working Group we have already significantly improved our understanding of mineral carbonation. Group members at the Albany Research Center have recently shown that carbonation of olivine and serpentine, which naturally occurs over geological time (i.e., 100,000s of years), can be accelerated to near completion in hours. Further process refinement will require a synergetic science/engineering approach that emphasizes simultaneous investigation of both thermodynamic processes and the detailed microscopic, atomic-level mechanisms that govern carbonation kinetics. Our previously funded Phase I Innovative Concepts project demonstrated the value of advanced quantum-mechanical modeling as a complementary tool in bridging important gaps in our understanding of the atomic/molecular structure and reaction mechanisms that govern CO2 mineral sequestration reaction processes for the model Mg-rich lamellar hydroxide feedstock material Mg(OH)2. In the present simulation project, improved techniques and more efficient computational schemes have allowed us to expand and augment these capabilities and explore more complex Mg-rich, lamellar hydroxide-based feedstock materials, including the serpentine-based minerals. These feedstock materials are being actively investigated due to their wide availability, and low-cost CO2 mineral sequestration potential. Cutting-edge first principles quantum chemical, computational solid-state and materials simulation methodology studies proposed herein, have been strategically integrated with our new DOE supported (ASU-Argonne National Laboratory) project to investigate the mechanisms that govern mineral feedstock heat-treatment and aqueous/fluid-phase serpentine mineral carbonation in situ. This unified, synergetic theoretical and experimental approach has provided a deeper understanding of the key reaction mechanisms than either individual approach can alone. We used ab initio techniques to significantly advance our understanding of atomic-level processes at the solid/solution interface by elucidating the origin of vibrational, electronic, x-ray and electron energy loss sp

A.V.G. Chizmeshya; M.J. McKelvy; G.H. Wolf; R.W. Carpenter; D.A. Gormley; J.R. Diefenbacher; R. Marzke

2006-03-01T23:59:59.000Z

295

Single x-ray transmission system for bone mineral density determination  

SciTech Connect (OSTI)

Bones are the support of the body. They are composed of many inorganic compounds and other organic materials that all together can be used to determine the mineral density of the bones. The bone mineral density is a measure index that is widely used as an indicator of the health of the bone. A typical manner to evaluate the quality of the bone is a densitometry study; a dual x-ray absorptiometry system based study that has been widely used to assess the mineral density of some animals' bones. However, despite the success stories of utilizing these systems in many different applications, it is a very expensive method that requires frequent calibration processes to work properly. Moreover, its usage in small species applications (e.g., rodents) has not been quite demonstrated yet. Following this argument, it is suggested that there is a need for an instrument that would perform such a task in a more reliable and economical manner. Therefore, in this paper we explore the possibility to develop a new, affordable, and reliable single x-ray absorptiometry system. The method consists of utilizing a single x-ray source, an x-ray image sensor, and a computer platform that all together, as a whole, will allow us to calculate the mineral density of the bone. Utilizing an x-ray transmission theory modified through a version of the Lambert-Beer law equation, a law that expresses the relationship among the energy absorbed, the thickness, and the absorption coefficient of the sample at the x-rays wavelength to calculate the mineral density of the bone can be advantageous. Having determined the parameter equation that defines the ratio of the pixels in radiographies and the bone mineral density [measured in mass per unit of area (g/cm{sup 2})], we demonstrated the utility of our novel methodology by calculating the mineral density of Wistar rats' femur bones.

Jimenez-Mendoza, Daniel; Vargas-Vazquez, Damian [Division de Investigacion y Posgrado, Facultad de Ingenieria, Universidad Autonoma de Queretaro, Cerro de las Campanas s/n., C.P. 76010, Queretaro, Qro. (Mexico); Espinosa-Arbelaez, Diego G. [Posgrado en Ciencia e Ingenieria en Materiales, Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico, Av. Universidad 3000, C.P. 04510, Coyoacan, Mexico D.F. (Mexico); Departamento de Nanotecnologia, Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, Campus Juriquilla, Boulevard Juriquilla 3001, C.P. 76230, A.P. 1-1010, Juriquilla, Qro. (Mexico); Giraldo-Betancur, Astrid L. [Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Libramiento Norponiente 2000, C.P. 76230, Fracc. Real de Juriquilla, Qro. (Mexico); Hernandez-Urbiola, Margarita I. [Posgrado en Investigaciones Biomedicas, Universidad Nacional Autonoma de Mexico, Campus Juriquilla, Boulevard Juriquilla 3001, C.P. 76230, A.P. 1-1010, Juriquilla, Qro. (Mexico); Departamento de Nanotecnologia, Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, Campus Juriquilla, Boulevard Juriquilla 3001, C.P. 76230, A.P. 1-1010, Juriquilla, Qro. (Mexico); Rodriguez-Garcia, Mario E. [Departamento de Nanotecnologia, Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, Campus Juriquilla, Boulevard Juriquilla 3001, C.P. 76230, A.P. 1-1010, Juriquilla, Qro. (Mexico)

2011-12-15T23:59:59.000Z

296

In Vitro Enzymatic Reduction Kinetics of Mineral Oxides by Membrane Fractions from Shewanella oneidensis MR-1  

SciTech Connect (OSTI)

This study documents the first example of in vitro solid-phase mineral oxide reduction by enzyme-containing membrane fractions. Previous in vitro studies have only reported the reduction of aqueous ions. Total membrane (TM) fractions from iron-grown cultures of Shewanella oneidensis MR-1 were isolated and shown to catalyze the reduction of goethite, hematite, birnessite, and ramsdellite/pyrolusite using formate. In contrast, nicotinamide adenine dinucleotide (NADH) and succinate cannot function as electron donors. The significant implications of observations related to this cell-free system are: (i) both iron and manganese mineral oxides are reduced by the TM fraction, but aqueous U(VI) is not; (ii) TM fractions from anaerobically grown, but not aerobically grown, cells can reduce the mineral oxides; (iii) electron shuttles and iron chelators are not needed for this in vitro reduction, documenting conclusively that reduction can occur by direct contact with the mineral oxide; (iv) electron shuttles and EDTA stimulate the in vitro Fe(III) reduction, documenting that exogenous molecules can enhance rates of enzymatic mineral reduction; and (v) multiple membrane components are involved in solid-phase oxide reduction. The membrane fractions, consisting of liposomes of cytoplasmic and outer membrane segments, contain at least 100 proteins including the enzyme that oxidizes formate, formate dehydrogenase. Mineral oxide reduction was inhibited by the addition of detergent Triton X-100, which solubilizes membranes and their associated proteins, consistent with the involvement of multiple electron carriers that are disrupted by detergent addition. In contrast, formate dehydrogenase activity was not inhibited by Triton X-100. The addition of anthraquinone-2,6-disulfonate (AQDS) and menaquinone-4 was unable to restore activity; however, menadione (MD) restored 33% of the activity. The addition of AQDS and MD to reactions without added detergent increased the rate of goethite reduction. The Michaelis-Menten K{sub m} values of 71 {+-} 22 m{sup 2}/L for hematite and 50 {+-} 16 m{sup 2}/L for goethite were calculated as a function of surface area of the two insoluble minerals. V{sub max} was determined to be 123 {+-} 14 and 156 {+-} 13 nmol Fe(II)/min/mg of TM protein for hematite and goethite, respectively. These values are consistent with in vivo rates of reduction reported in the literature. These observations are consistent with our conclusion that the enzymatic reduction of mineral oxides is an effective probe that will allow elucidation of molecular chemistry of the membrane-mineral interface where electron transfer occurs.

Ruebush,S.; Icopini, G.; Brantley, S.; Tien, M.

2006-01-01T23:59:59.000Z

297

Mineral transformation and biomass accumulation associated with uranium bioremediation at Rifle, Colorado  

SciTech Connect (OSTI)

Injection of organic carbon into the subsurface as an electron donor for bioremediation of redox-sensitive contaminants like uranium often leads to mineral transformation and biomass accumulation, both of which can alter the flow field and potentially bioremediation efficacy. This work combines reactive transport modeling with a column experiment and field measurements to understand the biogeochemical processes and to quantify the biomass and mineral transformation/accumulation during a bioremediation experiment at a uranium contaminated site near Rifle, Colorado. We use the reactive transport model CrunchFlow to explicitly simulate microbial community dynamics of iron and sulfate reducers, and their impacts on reaction rates. The column experiment shows clear evidence of mineral precipitation, primarily in the form of calcite and iron monosulfide. At the field scale, reactive transport simulations suggest that the biogeochemical reactions occur mostly close to the injection wells where acetate concentrations are highest, with mineral precipitate and biomass accumulation reaching as high as 1.5% of the pore space. This work shows that reactive transport modeling coupled with field data can be an effective tool for quantitative estimation of mineral transformation and biomass accumulation, thus improving the design of bioremediation strategies.

Li, L.; Steefel, C.I.; Williams, K.H.; Wilkins, M.J.; Hubbard, S.S.

2009-04-20T23:59:59.000Z

298

Mineral Dissolution and Secondary Precipitation on Quartz Sand in Simulated Hanford Tank Solutions Affecting Subsurface Porosity  

SciTech Connect (OSTI)

Highly alkaline nuclear waste solutions have been released from underground nuclear waste storage tanks and pipelines into the vadose zone at the U.S. Department of Energy’s Hanford Site in Washington, causing mineral dissolution and re-precipitation upon contact with subsurface sediments. High pH caustic NaNO3 solutions with and without dissolved Al were reacted with quartz sand through flow-through columns stepwise at 45, 51, and 89°C to simulate possible reactions between leaked nuclear waste solution and primary subsurface mineral. Upon reaction, Si was released from the dissolution of quartz sand, and nitrate-cancrinite [Na8Si6Al6O24(NO3)2] precipitated on the quartz surface as a secondary mineral phase. Both steady-state dissolution and precipitation kinetics were quantified, and quartz dissolution apparent activation energy was determined. Mineral alteration through dissolution and precipitation processes results in pore volume and structure changes in the subsurface porous media. In this study, the column porosity increased up to 40.3% in the pure dissolution column when no dissolved Al was present in the leachate, whereas up to a 26.5% porosity decrease was found in columns where both dissolution and precipitation were observed because of the presence of Al in the input solution. The porosity change was also confirmed by calculation using the dissolution and precipitation rates and mineral volume changes.

Wang, Guohui; Um, Wooyong

2012-11-23T23:59:59.000Z

299

DXRD (Dynamic X-Ray Diffraction) studies of oil shale mineral reactions  

SciTech Connect (OSTI)

With the advent of second generation, above-ground oil shale processes, retorted shale is likely to be combusted at temperatures between 1000{degree}K and 1200{degree}K. At these temperatures the mineral matrix of the shale will undergo a variety of chemical reactions including carbonate decomposition, sulfation and recombination reactions to form silicates. This complex set of reactions can be very important to the optimum design of a retorted shale combustor. For example the net heat of combustion is very dependent on these reactions since the carbonate mineral decomposition reactions are highly endothermic and some of the silication reactions only mildly endothermic. In addition, the combusted shale (ash) will have to be disposed and revegetated and the environmental consequences of this process will be highly dependent on the mineral composition of the ash. The degree to which the mineral reactions influence these considerations will depend on the time-temperature history to which the shale is exposed. Thus it is important to have a knowledge of the kinetics of these reactions. Previous attempts to study these kinetics have been made at Lawrence Livermore Laboratories and in our own laboratory. However, these studies all employed TGA techniques and, since there is usually more than one reaction occurring simultaneously, there is no way to distinguish between competing reactions. What is described here is the application of a new technique - Dynamic X-Ray Diffraction (DXRD), which has been successfully applied to studies of oil shale mineral reactions under typical retorted shale combustion conditions.

Helling, K.A.; Thomson, W.J.

1987-04-01T23:59:59.000Z

300

Lung cancer in uranium miners: A tissue resource and pilot study. Final performance report  

SciTech Connect (OSTI)

This project incorporates two related research projects directed toward understanding respiratory carcinogenesis in radon-exposed former uranium miners. The first project involved a continuation of the tissue resource of lung cancer cases from former underground uranium miners and comparison cases from non-miners. The second project was a pilot study for a proposed longitudinal study of respiratory carcinogenesis in former uranium miners. The objectives including facilitating the investigation of molecular changes in radon exposed lung cancer cases, developing methods for prospectively studying clinical, cytologic, cytogenetic, and molecular changes in the multi-event process of respiratory carcinogenesis, and assessing the feasibility of recruiting former uranium miners into a longitudinal study that collected multiple biological specimens. A pilot study was conducted to determine whether blood collection, induced sputum, bronchial brushing, washings, and mucosal biopsies from participants at two of the hospitals could be included efficiently. A questionnaire was developed for the extended study and all protocols for specimen collection and tissue handling were completed. Resource utilization is in progress at ITRI and the methods have been developed to study molecular and cellular changes in exfoliated cells contained in sputum as well as susceptibility factors.

Samet, J.; Gilliland, F.D.

1998-08-13T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

Effect of the bioemulsifier emulsan on naphthalene mineralization from coal tar in aqueous systems  

SciTech Connect (OSTI)

Coal tar in aerobic aqueous systems was treated with purified emulsan, the anionic heteropolysaccharide bioemulsifier produced by Acinetobacter calcoaceticus RAG-1; with inocula of various concentrations of stationary phase RAG-1 cells; or with cell-free broth from stationary phase RAG-1 cultures. Naphthalene mineralization by a mixed PAH-degrading population was measured by recovering {sup 14}CO{sub 2} evolved during biotransformation of the [{sup 14}C]naphthalene-labeled coal tar. There was no evidence of naphthalene mineralization by RAG- 1 cells alone. The addition of emulsan, RAG-1 inocula, or cell-free broth to systems containing the PAH-degrading population did not significantly affect naphthalene mineralization in any of the systems tested. Coal tar in these experiments was present either as a free dense nonaqueous phase liquid (DNAPL), or as DNAPL imbibed into microporous silica particles. Emulsification of the tar was not observed in either case. The presence or absence of microporous silica did not affect the extent or rate of naphthalene mineralization, nor did the concentration of RAG-1 inocula or the amount of broth added. The addition of cell-free broth, emulsan, or RAG-1 cells late in the experiments did not yield significantly different results compared to initial addition of these substances. Thus, emulsan and related fractions from RAG-1 cultures were ineffective in altering naphthalene mineralization in this study.

Skubal, K.L.; Luthy, R.G.

1994-09-01T23:59:59.000Z

302

Quantitative mineralogical composition of complex mineral wastes - Contribution of the Rietveld method  

SciTech Connect (OSTI)

The objective of the work presented in this paper is the quantitative determination of the mineral composition of two complex mineral wastes: a sewage sludge ash (SSA) and a municipal solid waste incineration fly ash (MSWIFA). The mineral compositions were determined by two different methods: the first based on calculation using the qualitative mineralogical composition of the waste combined with physicochemical analyses; the second the Rietveld method, which uses only X-ray diffraction patterns. The results obtained are coherent, showing that it is possible to quantify the mineral compositions of complex mineral waste with such methods. The apparent simplicity of the Rietveld method (due principally to the availability of software packages implementing the method) facilitates its use. However, care should be taken since the crystal structure analysis based on powder diffraction data needs experience and a thorough understanding of crystallography. So the use of another, complementary, method such as the first one used in this study, may sometimes be needed to confirm the results.

Mahieux, P.-Y. [Universite de Toulouse, UPS, INSA, LMDC (Laboratoire Materiaux et Durabilite des Constructions), 135, Avenue de Rangueil, F-31 077 Toulouse Cedex 4 (France); Aubert, J.-E., E-mail: aubert@insa-toulouse.f [Universite de Toulouse, UPS, INSA, LMDC (Laboratoire Materiaux et Durabilite des Constructions), 135, Avenue de Rangueil, F-31 077 Toulouse Cedex 4 (France); Cyr, M.; Coutand, M.; Husson, B. [Universite de Toulouse, UPS, INSA, LMDC (Laboratoire Materiaux et Durabilite des Constructions), 135, Avenue de Rangueil, F-31 077 Toulouse Cedex 4 (France)

2010-03-15T23:59:59.000Z

303

Process for removal of mineral particulates from coal-derived liquids  

DOE Patents [OSTI]

Suspended mineral solids are separated from a coal-derived liquid containing the solids by a process comprising the steps of: (a) contacting said coal-derived liquid containing solids with a molten additive having a melting point of 100.degree.-500.degree. C. in an amount of up to 50 wt. % with respect to said coal-derived liquid containing solids, said solids present in an amount effective to increase the particle size of said mineral solids and comprising material or mixtures of material selected from the group of alkali metal hydroxides and inorganic salts having antimony, tin, lithium, sodium, potassium, magnesium, calcium, beryllium, aluminum, zinc, molybdenum, cobalt, nickel, ruthenium, rhodium or iron cations and chloride, iodide, bromide, sulfate, phosphate, borate, carbonate, sulfite, or silicate anions; and (b) maintaining said coal-derived liquid in contact with said molten additive for sufficient time to permit said mineral matter to agglomerate, thereby increasing the mean particle size of said mineral solids; and (c) recovering a coal-derived liquid product having reduced mineral solids content. The process can be carried out with less than 5 wt. % additive and in the absence of hydrogen pressure.

McDowell, William J. (Knoxville, TN)

1980-01-01T23:59:59.000Z

304

Development and evaluation of a thermodynamic dataset for phases of interest in CO2 mineral sequestration in basaltic rocks  

E-Print Network [OSTI]

evaluation of a thermodynamic dataset for phases of interestKeywords: Thermodynamic dataset CO2–water– basaltABSTRACT A thermodynamic dataset describing 36 mineral

Aradottir, E.S.P.

2013-01-01T23:59:59.000Z

305

CLAY MINERALS OF THE FRONT RANGE: A FIELD GUIDE TO THE GEOLOGY, HISTORY, AND CLAY MINERALOGY OF THE CHIEFTAIN MINE,  

E-Print Network [OSTI]

.................................................... 71 Appendix I: Clay Minerals Society field trip mileage log ............... 76 #12;FIGURES 1. Line ......................................... 21 7. Robinson Brick Company history ................................... 22 8. Diffractogram showing

306

Interaction between humans and the physical world is com-plex. Topics such as water management, mineral depletion,  

E-Print Network [OSTI]

with a bachelor's degree are found in government agencies, the energy industry, private consulting, construction, mineral depletion, air pollution, soil contamination, invasive species, defor- estation and loss

Saldin, Dilano

307

Automated simulation of areal bone mineral density assessment in the distal radius from high-resolution peripheral quantitative computed tomography  

E-Print Network [OSTI]

Bone mineral density . DXA . HR-pQCT . Osteoporosis .Simulation Introduction Osteoporosis is a conditionclinical assessment of osteoporosis status were identified

Burghardt, A. J.; Kazakia, G. J.; Link, T. M.; Majumdar, S.

2009-01-01T23:59:59.000Z

308

Injury experience in nonmetallic mineral mining (except stone and coal), 1989  

SciTech Connect (OSTI)

This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of nonmetallic mineral mining (except stone and coal) in the United States for 1989. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and principal type of mineral. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison with other metal and nonmetallic mineral mining industries and with coal mining, summary reference tabulations are included at the end of both the operator and the contractor sections of this report. 3 figs., 46 tabs.

Not Available

1990-01-01T23:59:59.000Z

309

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

SciTech Connect (OSTI)

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

310

Study of catalytic effects of mineral matter level on coal reactivity  

SciTech Connect (OSTI)

Coal liquefaction experiments using a 400-lb/day bubble-column reactor tested the catalytic effects of added mineral matter level on coal conversion, desulfurization, and distillate yields in continuous operation under recycle conditions, with specific emphasis on the use of a disposable pyrite catalyst indigenous to the feed coal. Western Kentucky No. 11 run-of-mine (ROM) and washed coals were used as feedstocks to determine the effects of levels of mineral matter, specifically iron compounds. Liquefaction reactivity as characterized by total distillate yield was lower for washed coal, which contained less mineral matter. Liquefaction reactivity was regained when pyrite concentrate was added as a disposable catalyst to the washed coal feed in sufficient quantity to match the feed iron concentration of the run-of-mine coal liquefaction test run.

Mazzocco, Nestor J.; Klunder, Edgar B.; Krastman, Donald

1981-03-01T23:59:59.000Z

311

Lung cancer epidemiology in New Mexico uranium miners. Progress report, March 1, 1991--November 30, 1991  

SciTech Connect (OSTI)

This investigation assesses the health effects of radon progeny exposure in New Mexico uranium miners. Cumulative exposures sustained by most New Mexico miners are well below those received earlier in the Colorado Plateau. This project utilizes the research opportunity offered by New Mexico miners to address unresolved issues related to radon progeny exposure: (1) the lung cancer risk of lower levels of exposure, (2) interaction between radon progeny exposure and cigarette smoking in the causation of lung cancer, (3) the relationship between lung cancer histologic type and radon progeny exposure, and (4) possible effects of radon progeny exposure other than lung cancer. A cohort study of 3800 men with at least one year of underground uranium mining experience in New Mexico is in progress. Results are discussed.

Samet, J.M.

1991-11-01T23:59:59.000Z

312

Studies Concerning the Accumulation of Minerals and Heavy Metals in Fruiting Bodies of Wild Mushrooms  

SciTech Connect (OSTI)

The minerals and heavy metals play an important role in the metabolic processes, during the growth and development of mushrooms, when they are available in appreciable concentration. In this work the concentrations of Cr, Mn, Fe, Ni, Cu, Zn, Se, Cd and Pb were analyzed using the Flame Atomic Absorption spectrometry (FAAS) together with Energy Dispersive X-ray Fluorescence spectrometry (EDXRF) in 3 wild mushrooms species and their growing substrate, collected from various forestry fields in Dambovita County, Romania. The analyzed mushrooms were: Amanita phalloides, Amanita rubescens and Armillariella mellea. The accumulation coefficients were calculated to assess the mobility of minerals and heavy metals from substrate to mushrooms [1].

Stihi, Claudia; Radulescu, Cristiana [Valahia University of Targoviste, Faculty of Sciences and Arts, Sciences Department, Unirii street, 130082, Targoviste (Romania); Gheboianu, Anca; Bancuta, Iulian [Valahia University of Targoviste, Multidisciplinary Research Institute for Sciences and Technologies, Unirii street, 130082, Targoviste (Romania); Popescu, Ion V. [Valahia University of Targoviste, Faculty of Sciences and Arts, Sciences Department, Unirii street, 130082, Targoviste (Romania); Valahia University of Targoviste, Multidisciplinary Research Institute for Sciences and Technologies, Unirii street, 130082, Targoviste (Romania); Academy of Romanian Scientist, Bucharest (Romania); Busuioc, Gabriela [Valahia University of Targoviste, Faculty of Environmental Engineering and Biotechnologies, Environmental Engineering Department, Unirii street, 130082, Targoviste (Romania)

2011-10-03T23:59:59.000Z

313

http://www.cemr.wvu.edu/freshman UPDATED 12/15/2010 COLLEGE OF ENGINEERING AND MINERAL RESOURCES FRESHMAN ENGINEERING  

E-Print Network [OSTI]

http://www.cemr.wvu.edu/freshman UPDATED 12/15/2010 COLLEGE OF ENGINEERING AND MINERAL RESOURCES ­ FRESHMAN ENGINEERING STUDY LAB POLICY SPRING 2011 The College of Engineering and Mineral Resources (CEMR in college. Student feedback indicates that students want more help in Math, Chemistry, Physics

Mohaghegh, Shahab

314

Shedding light on carbon-mineral complexation in the soil environment: impacts on C sequestration and cycling  

E-Print Network [OSTI]

42 Shedding light on carbon-mineral complexation in the soil environment: impacts on C sequestration and cycling Sparks, D.L. & C. Chen Department of Plant and Soil Sciences and Delaware@udel.edu) Abstract Organic matter (OM)-mineral complexation plays a critical role in soil carbon (C) stabilization

Sparks, Donald L.

315

MINERALIZATION OF RADIOACTIVE WASTES BY FLUIDIZED BED STEAM REFORMING (FBSR): COMPARISONS TO VITREOUS WASTE FORMS, AND PERTINENT DURABILITY TESTING  

SciTech Connect (OSTI)

The Savannah River National Laboratory (SRNL) was requested to generate a document for the Washington State Department of Ecology and the U.S. Environmental Protection Agency that would cover the following topics: (1) A description of the mineral structures produced by Fluidized Bed Steam Reforming (FBSR) of Hanford type Low Activity Waste (LAW including LAWR which is LAW melter recycle waste) waste, especially the cage structured minerals and how they are formed. (2) How the cage structured minerals contain some contaminants, while others become part of the mineral structure (Note that all contaminants become part of the mineral structure and this will be described in the subsequent sections of this report). (3) Possible contaminant release mechanisms from the mineral structures. (4) Appropriate analyses to evaluate these release mechanisms. (5) Why the appropriate analyses are comparable to the existing Hanford glass dataset. In order to discuss the mineral structures and how they bond contaminants a brief description of the structures of both mineral (ceramic) and vitreous waste forms will be given to show their similarities. By demonstrating the similarities of mineral and vitreous waste forms on atomic level, the contaminant release mechanisms of the crystalline (mineral) and amorphous (glass) waste forms can be compared. This will then logically lead to the discussion of why many of the analyses used to evaluate vitreous waste forms and glass-ceramics (also known as glass composite materials) are appropriate for determining the release mechanisms of LAW/LAWR mineral waste forms and how the durability data on LAW/LAWR mineral waste forms relate to the durability data for LAW/LAWR glasses. The text will discuss the LAW mineral waste form made by FBSR. The nanoscale mechanism by which the minerals form will be also be described in the text. The appropriate analyses to evaluate contaminant release mechanisms will be discussed, as will the FBSR test results to date and how they compare to testing performed on LAW glasses. Other details about vitreous waste form durability and impacts of REDuction/OXidation (REDOX) on durability are given in Appendix A. Details about the FBSR process, various pilot scale demonstrations, and applications are given in Appendix B. Details describing all the different leach tests that need to be used jointly to determine the leaching mechanisms of a waste form are given in Appendix C. Cautions regarding the way in which the waste form surface area is measured and in the choice of leachant buffers (if used) are given in Appendix D.

Jantzen, C

2008-12-26T23:59:59.000Z

316

The role of reaction affinity and secondary minerals in regulating chemical weathering rates at the Santa Cruz Soil Chronosequence, California  

SciTech Connect (OSTI)

In order to explore the reasons for the apparent discrepancy between laboratory and field weathering rates and to determine the extent to which weathering rates are controlled by the approach to thermodynamic equilibrium, secondary mineral precipitation and flow rates, a multicomponent reactive transport model (CrunchFlow) was used to interpret soil profile development and mineral precipitation and dissolution rates at the 226 ka marine terrace chronosequence near Santa Cruz, CA. Aqueous compositions, fluid chemistry, transport, and mineral abundances are well characterized (White et al., 2008, GCA) and were used to constrain the reaction rates for the weathering and precipitating minerals in the reactive transport modeling. When primary mineral weathering rates are calculated with either of two experimentally determined rate constants, the nonlinear, parallel rate law formulation of Hellmann and Tisser and [2006] or the aluminum inhibition model proposed by Oelkers et al. [1994], modeling results are consistent with field-scale observations when independently constrained clay precipitation rates are accounted for. Experimental and field rates, therefore, can be reconciled at the Santa Cruz site. Observed maximum clay abundances in the argillic horizons occur at the depth and time where the reaction fronts of the primary minerals overlap. The modeling indicates that the argillic horizon at Santa Cruz can be explained almost entirely by weathering of primary minerals and in situ clay precipitation accompanied by undersaturation of kaolinite at the top of the profile. The rate constant for kaolinite precipitation was also determined based on model simulations of mineral abundances and dissolved Al, SiO{sub 2}(aq) and pH in pore waters. Changes in the rate of kaolinite precipitation or the flow rate do not affect the gradient of the primary mineral weathering profiles, but instead control the rate of propagation of the primary mineral weathering fronts and thus total mass removed from the weathering profile. Our analysis suggests that secondary clay precipitation is as important as aqueous transport in governing the amount of dissolution that occurs within a profile because clay minerals exert a strong control over the reaction affinity of the dissolving primary minerals. The modeling also indicates that the weathering advance rate and the total mass of mineral dissolved is controlled by the thermodynamic saturation of the primary dissolving phases plagioclase and K-feldspar, as is evident from the difference in propagation rates of the reaction fronts for the two minerals despite their very similar kinetic rate laws.

Maher, K.; Steefel, C. I.; White, A.F.; Stonestrom, D.A.

2009-02-25T23:59:59.000Z

317

Measure Guideline: Three High Performance Mineral Fiber Insulation Board Retrofit Solutions  

SciTech Connect (OSTI)

This Measure Guideline describes a high performance enclosure retrofit package that uses mineral fiber insulation board. The Measure Guideline describes retrofit assembly and details for wood frame roof and walls and for cast concrete foundations. This Measure Guideline is intended to serve contractors and designers seeking guidance for non-foam exterior insulation retrofit.

Neuhauser, K.

2015-01-01T23:59:59.000Z

318

Inhibition Effect of Secondary Phosphate Mineral Precipitation on Uranium Release from Contaminated Sediments  

SciTech Connect (OSTI)

The inhibitory effect of phosphate mineral precipitation on uranium release was evaluated using a U(VI)-contaminated sediment collected from the US Department of Energy (DOE) Hanford site. The sediment contained U(VI) that was associated with diffusion-limited intragrain regions within its mm-size granitic lithic fragments. The sediment was first treated to promote phosphate mineral precipitation in batch suspensions spiked with 1 and 50 mM aqueous phosphate, and calcium in a stoichiometric ratio of mineral hydroxyapatite. The phosphate-treated sediment was then leached to solubilize contaminant U(VI) in a column system using a synthetic groundwater that contained chemical components representative of Hanford groundwater. Phosphate treatment significantly decreased the extent of U(VI) release from the sediment. Within the experimental duration of about 200 pore volumes, the effluent U(VI) concentrations were consistently lower by over one and two orders of magnitude after the sediment was treated with 1 and 50 mM of phosphate, respectively. Measurements of solid phase U(VI) using various spectroscopes and chemical extraction of the sediment collectively indicated that the inhibition of U(VI) release from the sediment was caused by: 1) U(VI) adsorption to the secondary phosphate precipitates and 2) the transformation of initially present U(VI) mineral phases to less soluble forms.

Shi, Zhenqing; Liu, Chongxuan; Zachara, John M.; Wang, Zheming; Deng, Baolin

2009-11-01T23:59:59.000Z

319

USE OF CdTe DETECTORS IN BONE MINERAL MEASUREMENTS J. VOGEL, J. ULLMAN  

E-Print Network [OSTI]

375 USE OF CdTe DETECTORS IN BONE MINERAL MEASUREMENTS J. VOGEL, J. ULLMAN Nuclear Medicine. Cet ensemble emploie des détecteurs CdTe mesurant la transmission d'un faisceau collimaté de rayons X periods of prolonged bedrest or weightlessness. The unit employs CdTe detectors to mea- sure

Paris-Sud XI, Université de

320

4.4 Nanoscale: Mineral Weathering Boundary RI Dorn, Arizona State University, Tempe, AZ, USA  

E-Print Network [OSTI]

of more intense dissolution are seen as pits on the scale of micrometers. Heavy metal scavenging Iron and manganese oxides and hydroxides scavenge heavy metals such as zinc, copper, and lead. High in mineral weathering, silt production, rock coating behavior, geochemical pollution, thermal weathering from

Dorn, Ron

Note: This page contains sample records for the topic "reid miner ncasi" 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

The need of mineral resources driven by the energy transition for the next 40 years  

E-Print Network [OSTI]

increase in the share of solar and wind energy Evolution of hydro, solar and wind energy production world production PV from PH 2002 PH 2002 PH 2002 PH 2002 #12;Should we worry ? Materials requirementsThe need of mineral resources driven by the energy transition for the next 40 years Olivier Vidal

Canet, LĂ©onie

322

In Brief . ... resident scholar in the Center for Energy and Mineral Resources, will  

E-Print Network [OSTI]

In Brief . ... resident scholar in the Center for Energy and Mineral Resources, will administer production of hatchery seed and the culture of marketable oysters. They also hope to increase productivity director of Texas A&M Univer- sity's Center for Marine Resources, the University reports. Hann, who

323

Department of Energy and Mineral Engineering Spring 2013 Solar Innovations, Inc. Energy Management Program  

E-Print Network [OSTI]

Management Program Overview A team of six energy engineering students was assigned the task of developing an energy management program in order to reduce the client's energy use. The team had 14 weeks (1 semesterPENNSTATE Department of Energy and Mineral Engineering Spring 2013 Solar Innovations, Inc. Energy

Demirel, Melik C.

324

Effect of a liquid multi-vitamin-mineral supplement on anaerobic exercise performance  

E-Print Network [OSTI]

The purpose of this study was to determine if supplementation with a liquid multi-vitamin/mineral would improve anaerobic exercise performance. Fourteen resistance-trained men performed a 30-second cycle sprint and one set of squat exercise on 2...

Fry, Andrew C.; Bloomer, Richard J.; Falvo, Michael J.; Moore, Chris A.; Schilling, Brian K.; Weiss, Lawrence W.

2006-01-01T23:59:59.000Z

325

GFDI COLLOQUIUM "Use of Mineral vs. Polymer Drilling Fluids in Deep  

E-Print Network [OSTI]

GFDI COLLOQUIUM Title "Use of Mineral vs. Polymer Drilling Fluids in Deep Foundation Construction. Refreshments will be served at 1:30M ABSTRACT: In deep foundation design, drilled shafts (also referred to as bored piles or drilled caissons) are preferred because of their large load capacities and greater

Ronquist, Fredrik

326

John G. Hinchey Ke iko H. Hattori Magmatic mineralization and hydrothermal enrichment of the High Grade  

E-Print Network [OSTI]

ARTICLE John G. Hinchey � KeŽ iko H. Hattori Magmatic mineralization and hydrothermal enrichment; millerite + siegenite ± chalcopyrite ± pyrite co-existing with hornblende + plagioclase ± quartz ± carbonate, and pyrite ± chalcopyrite with chlorite + actinolite ± albite ± quartz ± carbonate. The ore is high in Pd

327

Helping effort increases with relatedness in bell miners, but `unrelated' helpers of both  

E-Print Network [OSTI]

Helping effort increases with relatedness in bell miners, but `unrelated' helpers of both sexes-breeding individuals help raise the young of relatives. However, the evolution of helping by non-relatives requires extremely clear evidence for the expected effect of genetic relatedness on individual helping effort per

Richner, Heinz

328

Research Profile Particles are everywhere: from the earth and its mineral min-  

E-Print Network [OSTI]

Research Profile Particles are everywhere: from the earth and its mineral min- ing to the air we aiming for new catalysts, sensors, nanocomposites,fuel cells,batteries,phosphors,CO2 sorbents, dental, orthopedic and even nutritional applications. Competences / Infrastructure Mixed ceramic/metal nanoparticle

Sandoghdar, Vahid

329

King Fahd University of Petroleum & Minerals College of Compute Sciences and Engineering  

E-Print Network [OSTI]

King Fahd University of Petroleum & Minerals College of Compute Sciences and Engineering and evaluation, specification, design, and evolution of software. In addition, vital issues in software that integrate ethical, social, legal, and economic concerns 4. Demonstrate the ability to work as an individual

El-Alfy, El-Sayed

330

1. Department, Course Number, Title ORE 678, Marine Mineral Resources Engineering  

E-Print Network [OSTI]

Nodules and Marine Mining · Deep Sea Mining Technology · Minerals Processing · Offshore Oil and Gas · Oil · Formation Processes of Polymetallic Sulfides (PMS) on the Ocean Floor: Geology of the Smoker and PMS · Chemistry of Hydrothermal Vents and Polymetallic Sulfides · PMS Deposits: From Smoker to an Ore Body · Case

Frandsen, Jannette B.

331

Permeability changes due to mineral diagenesis in fractured crust: implications for hydrothermal circulation at  

E-Print Network [OSTI]

The hydrothermal processes at ridge crests have been extensively studied during the last two decades. NeverthelessPermeability changes due to mineral diagenesis in fractured crust: implications for hydrothermal, the reasons why hydrothermal fields are only occasionally found along some ridge segments remain a matter

Manga, Michael

332

Coke gasification: the influence and behavior of inherent catalytic mineral matter  

SciTech Connect (OSTI)

Gasification of coke contributes to its degradation in the blast furnace. In this study, the effect of gasification on the inherent catalytic minerals in cokes and their reciprocal influence on gasification are investigated. The catalytic mineral phases identified in the cokes used in this study were metallic iron, iron sulfides, and iron oxides. Metallic iron and pyrrhotite were rapidly oxidized during gasification to iron oxide. The catalysts had a strong influence on the apparent rates at the initial stages of reaction. As gasification proceeds, their effect on the reaction rate diminishes as a result of reducing the surface contact between catalyst and carbon matrix because of carbon consumption around the catalyst particles; with extended burnout the reactivity of the coke becomes increasingly dependent on surface area. The reaction rate in the initial stages was also influenced by the particle size of the catalytic minerals; for a given catalytic iron level, the cokes whose catalytic minerals were more finely dispersed had a higher apparent reaction rate than cokes containing larger catalytic particles. Iron, sodium, and potassium in the amorphous phase did not appear to affect the reaction rate. 40 refs., 16 figs., 6 tabs.

Mihaela Grigore; Richard Sakurovs; David French; Veena Sahajwalla [Commonwealth Scientific and Industrial Research Organisation (CSIRO), Bangor, NSW (Australia)

2009-04-15T23:59:59.000Z

333

DIVISION S-10--WETLAND SOILS Carbon Accumulation and Storage in Mineral Subsoil beneath Peat  

E-Print Network [OSTI]

DIVISION S-10--WETLAND SOILS Carbon Accumulation and Storage in Mineral Subsoil beneath Peat Tim R subsoil (Turunen and Moore, 2003). TheyWe showed that sandy subsoils beneath peat near Ramsey Lake conditions beneath the peat. soils beneath the forest, those beneath the peat contained similar In this paper

Moore, Tim

334

Mineral bone composition and some elements of calcium metabolism in magnesium-deficient growing rats  

E-Print Network [OSTI]

Mineral bone composition and some elements of calcium metabolism in magnesium-deficient growing-Chomponelle, Theix, 63110 Beaumont, France. Summary. (1) Magnesium deficiency was induced in Sprague-Dawley male rats of deprivation. (3) The leg bones were fragmented as shown in figure 1. Their magnesium content had decreased

Paris-Sud XI, Université de

335

150 Years of Boom and Bust: What Drives Mineral Commodity Prices?  

E-Print Network [OSTI]

and production levels of copper, lead, tin, zinc, and crude oil from 1840 to 2010. Price fluctuations that price surges caused by rapid industrialization are a recurrent phenomenon throughout history. Mineral that supply shocks account for the broad behavior of the price of crude oil. In contrast, Kilian (2008b, 2009

Nesterov, Yurii

336

PASI 2011: Process Modeling and Optimization for Energy and Sustainability Mineral Process Design for  

E-Print Network [OSTI]

PASI 2011 PASI 2011: Process Modeling and Optimization for Energy and Sustainability Mineral, high population growth and urbanization, both key metals consumption and GDP are expected to grow the environmental impact, both in per tonne of product and on total amount of emissions and reduction. #12

Grossmann, Ignacio E.

337

Solidification of Aluminum Alloys Edited by TMS (The Minerals, Metals & Materials Society), 2004  

E-Print Network [OSTI]

Solidification of Aluminum Alloys Edited by TMS (The Minerals, Metals & Materials Society), 2004 Modeling the Effects of Mold Topography on Aluminum Cast Surfaces Lijian Tan1 , Nicholas Zabaras1 1 14853, USA Keywords: Aluminum Solidification; Mold topography; Cast Surfaces Abstract The air

Zabaras, Nicholas J.

338

Role of microbial iron reduction in the dissolution of iron hydroxysulfate minerals - article no. G01012  

SciTech Connect (OSTI)

Reduction of structural sulfate in the iron-hydroxysulfate mineral jarosite by sulfate-reducing bacteria has previously been demonstrated. The primary objective of this work was to evaluate the potential for anaerobic dissolution of the iron-hydroxysulfate minerals jarosite and schwertmannite at neutral pH by iron-reducing bacteria. Mineral dissolution was tested using a long-term cultivar, Geobacter metallireducens strain GS-15, and a fresh isolate Geobacter sp. strain ENN1, previously undescribed. ENN1 was isolated from the discharge site of Shadle Mine, in the southern anthracite coalfield of Pennsylvania, where schwertmannite was the predominant iron-hydroxysulfate mineral. When jarosite from Elizabeth Mine (Vermont) was provided as the sole terminal electron acceptor, resting cells of both G. metallireducens and ENN1 were able to reduce structural Fe(III), releasing Fe{sup +2}, SO{sub 4}{sup -2}, and K{sup +} ions. A lithified jarosite sample from Utah was more resistant to microbial attack, but slow release of Fe{sup +2} was observed. Neither bacterium released Fe{sup +2} from poorly crystalline synthetic schwertmannite. Our results indicate that exposure of jarosite to iron-reducing conditions at neutral pH is likely to promote the mobility of hazardous constituents and should therefore be considered in evaluating waste disposal and/or reclamation options involving jarosite-bearing materials.

Jones, E.J.P.; Nadeau, T.L.; Voytek, M.A.; Landa, E.R. [US Geological Survey, Reston, VA (United States)

2006-03-28T23:59:59.000Z

339

Effects of sulfuric acid and nitrogen deposition on mineral nutrition of Picea abies (L.) Karst.  

E-Print Network [OSTI]

ecosystems, saplings have been sprayed with artificial acid rain, structured soil samples have been extractedEffects of sulfuric acid and nitrogen deposition on mineral nutrition of Picea abies (L.) Karst. B sites in the Fichtel- gebirge, and low fogwater pH (Trautner, 1989) of 2.2 indicate a high acid stress

Paris-Sud XI, Université de

340

Porphyry Copper and Other Intrusion-Related Mineralization in Mexico MARK D. BARTON  

E-Print Network [OSTI]

Porphyry Copper and Other Intrusion-Related Mineralization in Mexico MARK D. BARTON JOHN-MARK G Inc., Tucson, Arizona ABSTRACT Intrusion-related copper-bearing ore deposits in Mexico span a wide. These deposits include world-class copper porphyry and skarn deposits as well as a continuum of similar skarn

Barton, Mark D.

Note: This page contains sample records for the topic "reid miner ncasi" 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

Ke iko H. Hattori Jerey D. Keith Contribution of mac melt to porphyry copper mineralization  

E-Print Network [OSTI]

mineralization: evidence from Mount Pinatubo, Philippines, and Bingham Canyon, Utah, USA Received: 15 April 2001 Canyon, Utah, site of the largest copper and gold deposit in North America at 38 Ma. The Bingham Canyon and selenium (Hattori 1993, 1996). We suggest that a sim- ilar process took place at 38 Ma at Bingham Canyon

342

Mineral and Rock Physics [MR] MR21B MCW:Level 1 Tuesday 0800h  

E-Print Network [OSTI]

Mineral and Rock Physics [MR] MR21B MCW:Level 1 Tuesday 0800h Structural Refinement Studies Kunz, Advanced Light Source MR21B-0018 The Crystal Structure of Diopside at Pressure to 10 Gpa tetrahedra and M1 octahedra to try and understand the observed changes in pyroxenes with changing P, T, and x

Downs, Robert T.

343

Grid computing and molecular simulations: the vision of the eMinerals project  

E-Print Network [OSTI]

1 Grid computing and molecular simulations: the vision of the eMinerals project Martin T Dove1, London WC1E 7HX Abstract This paper discusses a number of aspects of using grid computing methods for a useful grid infrastructure are discussed, including the integration of compute and data grids, automatic

Cambridge, University of

344

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS Information and Computer Science Department  

E-Print Network [OSTI]

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS Information and Computer Science Department ICS431 an error, you must report that the command can not be found and the child process should exit(). #12 sure you print its status and then wait again for current foreground command. Part 2: In this Part, you

Razak, Saquib

345

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS Information and Computer Science Department  

E-Print Network [OSTI]

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS Information and Computer Science Department ICS431 is not possible mathematically 6 / 0 For operations like this, your program should report the following the exit status from the "wait" call and check if the program terminated due to an exception. #12;

Razak, Saquib

346

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS Information and Computer Science Department  

E-Print Network [OSTI]

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS Information and Computer Science Department ICS 431 ends when its termination is reported to its parent process; at that time, all of the process resources--for example, its exit status code. A newly forked child process continues to execute the same program as its

Razak, Saquib

347

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS Information and Computer Science Department  

E-Print Network [OSTI]

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS Information and Computer Science Department ICS431: You must add "job status" to the shell. This means you have to recognize the command "ps to be executed. If the execvp/execvl returns an error, you must report that the command can not be found

Razak, Saquib

348

Department of Earth and Mineral Engineering Spring 2011 Oxidative Coupling of Methane Reactor  

E-Print Network [OSTI]

PENNSTATE Department of Earth and Mineral Engineering Spring 2011 Oxidative Coupling of Methane of an experimental reactor designed to couple methane to ethane and dehydrogenate ethane to ethylene. The reactor and build the reactor and perform methane conversion testing to provide proof of concept for the OCM

Demirel, Melik C.

349

Estimated number of women likely to benefit from bone mineral density measurement in France  

E-Print Network [OSTI]

; Menopause Introduction The prevalence of osteoporosis is rising, most notably in postmenopausal women years of age with risk factors for osteoporosis likely to lead to bone mineral density measurement, an investigation reimbursed by the French national health insurance system in patients at risk for osteoporosis

Paris-Sud XI, Université de

350

The chemistry of minerals obtained from the combustion of Jordanian oil shale  

E-Print Network [OSTI]

The chemistry of minerals obtained from the combustion of Jordanian oil shale Awni Y. Al was performed on the spent oil shale (oil shale ash) obtained from the combustion of Jordanian oil shale process, minimal fragmentation was encountered since Jordanian oil shale contains large proportions of ash

Shawabkeh, Reyad A.

351

Effects of internal mineral structures on the magnetic remanence of silicate-hosted titanomagnetite inclusions  

E-Print Network [OSTI]

Effects of internal mineral structures on the magnetic remanence of silicate-hosted titanomagnetite epitaxially by exsolution from their host silicate. Close examination of clinopyroxene- hosted inclusions of silicate-hosted titanomagnetite inclusions: An electron holography study, J. Geophys. Res., 111, B12S15

Dunin-Borkowski, Rafal E.

352

Impact of Particle Generation Method on the Apparent Hygroscopicity of Insoluble Mineral Particles  

SciTech Connect (OSTI)

Atmospheric mineral dust particles represent a major component of tropospheric aerosol mass and provide a reactive surface for heterogeneous reactions with trace atmospheric gases (Dentener et al. 1996).Heterogeneous processes alter the chemical balance of the atmosphere and also modify the physicochemical properties of mineral dust particles (Bauer et al. 2004). Organic and inorganic vapors can react with or partition to dust particles and alter their chemical composition (Al-Hosney et al. 2005; Laskin et al. 2005a, 2005b; Liu et al. 2008; Sullivan et al. 2007, 2009a; Sullivan and Prather 2007; Usher et al. 2003). Calcite (CaCO3) is one of the most reactive components of mineral dust, readily reacting with acidic gases. The fraction of CaCO3 in total dust mineralogy displays large variations between desert regions and other regions of the world as well as between individual mineral particles (Claquin et al. 1999; Jeong 2008; Laskin et al. 2005b; Sullivan et al. 2007). Through reactions with acidic gases CaCO3 can be converted to soluble hygroscopic products including CaCl2 and Ca(NO3)2, and sparingly soluble, non-hygroscopic products including CaSO4 and CaC2O4 (Krueger et al. 2004; Liu et al. 2008; Sullivan et al. 2009a, 2009b).

Sullivan, Ryan; Moore, Meagan J.; Petters, Markus D.; Kreidenweis, Sonia M.; Qafoku, Odeta; Laskin, Alexander; Roberts, Greg C.; Prather, Kimberly A.

2010-07-28T23:59:59.000Z

353

Basin evolution, diagenesis and uranium mineralization in the PaleoproterozicThelon Basin,  

E-Print Network [OSTI]

Basin evolution, diagenesis and uranium mineralization in the PaleoproterozicThelon Basin, Nunavut,Canada Eric E. Hiatt,n Sarah E. Palmer,w1 T. Kurt Kyserw and Terrence K. O'Connorz n Geology Department, University of Wisconsin Oshkosh, Oshkosh,Wisconsin, USA wDepartment of Geological Sciences and Engineering

Hiatt, Eric E.

354

Precambrian Research 148 (2006) 125144 The uranium mineralization potential of the Paleoproterozoic  

E-Print Network [OSTI]

Precambrian Research 148 (2006) 125­144 The uranium mineralization potential. Hanlya,, T. Kurtis Kysera, Eric E. Hiattb, Jim Marlattc, Sandra Fosterc a Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, Ont., Canada K7L 3N6 b Geology

Hiatt, Eric E.

355

NEW MEXICO SCHOOL OF MINES STATE BUREAU OF MINES AND MINERAL RESOURCES  

E-Print Network [OSTI]

NEW MEXICO SCHOOL OF MINES STATE BUREAU OF MINES AND MINERAL RESOURCES BULLETIN 13 FRONTISPIECE PIT AT HARDING MINE (To left of dump) DUMP AT HARDING MINE (To right of pit) #12;NEW MEXICO SCHOOL OF MINES STATE and Economic Features of the Pegmatites of Taos and Rio Arriba Counties, New Mexico By EVAN JUST SOCORRO, N. M

Lee, Cin-Ty Aeolus

356

Determination of Granites' Mineral Specific Porosities by PMMA Method and FESEM/EDAX  

SciTech Connect (OSTI)

Over extended periods, long-lived radionuclides (RN) or activation products within geologic disposal sites may be released from the fuel and migrate to the geo/biosphere. In the bedrock, contaminants will be transported along fractures by advection and retarded by sorption on mineral surfaces and by molecular diffusion into stagnant pore water in the matrix along a connected system of pores and micro-fissures. The objective of this paper was to determine the connective porosity and mineral-specific porosities for three granite samples by {sup 14}C methyl-methacrylate ({sup 14}C-PMMA) autoradiography. Scanning electron microscopy and energy-dispersive X-ray analyses (FESEM/EDAX) were performed in order to study the pore apertures of porous regions in greater detail and to identify the corresponding minerals. Finally, the porosity results were used to evaluate the diffusion coefficients of RNs from previous experiments which determined apparent diffusion coefficients for the main minerals in three granite samples by the Rutherford Backscattering technique. The total porosity of the Grimsel granite (0.75%) was significantly higher than the porosities of the El Berrocal and Los Ratones granites (0.3%). The porosities of the Grimsel granite feldspars were two to three times higher than the porosities of the El Berrocal and Los Ratones granites feldspars. However, there was no significant difference between the porosities of the dark minerals. A clear difference was found between the various quartz grains. Quartz crystals were non-porous in the El Berrocal and Los Ratones granites when measured by the PMMA method, but the quartz crystals in the Grimsel granite showed 0.5% intra granular porosity. The apparent diffusion coefficients calculated for uranium diffusion within Grimsel granite on different minerals were very similar (2.10{sup -13} {+-} 0.5 m{sup 2}/s), but differences within both Spanish granites were found from one mineral to another (9 {+-} 1.10{sup -14} m{sup 2}/s in feldspars and 4.5 {+-} 0.5.10{sup -14} m{sup 2}/s in quartz) - always presenting lower diffusion values than in the Grimsel granite. (authors)

Leskinen, A.; Penttinen, L.; Siitari-Kauppi, M. [Laboratory of Radiochemistry, University of Helsinki, P.O. Box 55, Helsinki, FIN-00014 (Finland); Alanso, U.; Garcia-Gutierrez, M.; Missana, T. [Ciemat, Madrid (Spain); Patelli, Alessandro [Associazione CIVEN, Via delle Industrie 9, Venezia-Marghera, 30175 (Italy)

2007-07-01T23:59:59.000Z

357

Mineral-Surfactant Interactions for Minimum Reagents Precipitation and Adsorption for Improved Oil Recovery  

SciTech Connect (OSTI)

Chemical EOR can be an effective method for increasing oil recovery and reducing the amount of produced water; however, reservoir fluids are chemically complex and may react adversely to the polymers and surfactants injected into the reservoir. While a major goal is to alter rock wettability and interfacial tension between oil and water, rock-fluid and fluid-fluid interactions must be understood and controlled to minimize reagent loss, maximize recovery and mitigate costly failures. The overall objective of this project was to elucidate the mechanisms of interactions between polymers/surfactants and the mineral surfaces responsible for determining the chemical loss due to adsorption and precipitation in EOR processes. The role of dissolved inorganic species that are dependent on the mineralogy is investigated with respect to their effects on adsorption. Adsorption, wettability and interfacial tension are studied with the aim to control chemical losses, the ultimate goal being to devise schemes to develop guidelines for surfactant and polymer selection in EOR. The adsorption behavior of mixed polymer/surfactant and surfactant/surfactant systems on typical reservoir minerals (quartz, alumina, calcite, dolomite, kaolinite, gypsum, pyrite, etc.) was correlated to their molecular structures, intermolecular interactions and the solution conditions such as pH and/or salinity. Predictive models as well as general guidelines for the use of polymer/surfactant surfactant/surfactant system in EOR have been developed The following tasks have been completed under the scope of the project: (1) Mineral characterization, in terms of SEM, BET, size, surface charge, and point zero charge. (2) Study of the interactions among typical reservoir minerals (quartz, alumina, calcite, dolomite, kaolinite, gypsum, pyrite, etc.) and surfactants and/or polymers in terms of adsorption properties that include both macroscopic (adsorption density, wettability) and microscopic (orientation/conformation of the adsorbed layers), as well as precipitation/abstraction characteristics. (3) Investigation of the role of dissolved species, especially multivalent ions, on interactions between reservoir minerals and surfactants and/or polymers leading to surfactant precipitation or activated adsorption. (4) Solution behavior tests--surface tension, interaction, ultra filtration, and other tests. (5) Surfactant-mineral interactions relative to adsorption, wettability, and electrophoresis. (6) Work on the effects of multivalent ions, pH, temperature, salinity, and mixing ratio on the adsorption. Developments of adsorption models to explain interactions between surfactants/polymers/minerals. (7) General guidelines for the use of certain surfactants, polymers and their mixtures in micelle flooding processes.

P. Somasundaran

2008-09-20T23:59:59.000Z

358

DEVELOPMENT OF A CO2 SEQUESTRATION MODULE BY INTEGRATING MINERAL ACTIVATION AND AQUEOUS CARBONATION  

SciTech Connect (OSTI)

Mineral carbonation is a promising concept for permanent CO{sub 2} sequestration due to the vast natural abundance of the raw minerals, the permanent storage of CO{sub 2} in solid form as carbonates, and the overall reaction being exothermic. However, the primary drawback to mineral carbonation is the reaction kinetics. To accelerate the reaction, aqueous carbonation processes are preferred, where the minerals are firstly dissolved in solution. In aqueous carbonation, the key step is the dissolution rate of the mineral, where the mineral dissolution reaction is likely to be surface controlled. In order to accelerate the dissolution process, the serpentine can be ground to very fine particle size (<37 {micro}m), but this is a very energy intensive process. Alternatively, magnesium could be chemically extracted in aqueous solution. Phase I showed that chemical surface activation helps to dissolve the magnesium from the serpentine minerals (particle size {approx}100 {micro}m), and furthermore, the carbonation reaction can be conducted under mild conditions (20 C and 650 psig) compared to previous studies that required >185 C, >1850 psig and <37 {micro}m particle size. Phase I also showed that over 70% of the magnesium can be extracted at ambient temperature leaving amorphous SiO{sub 2} with surface areas {approx} 330m{sup 2}/g. The overall objective of Phase 2 of this research program is to optimize the active carbonation process developed in Phase I in order to design an integrated CO{sub 2} sequestration module. During the current reporting period, Task 1 ''Mineral activation'' was initiated and focused on a parametric study to optimize the operation conditions for the mineral activation, where serpentine and sulfuric acid were reacted, as following the results from Phase 1. Several experimental factors were outlined as having a potential influence on the mineral activation. This study has focused to date on the effects of varying the acid concentration, particle size, and the reaction time. The reaction yields and the characterization of the reaction products by ICP/AES, TGA, and BET analyses were used to describe the influence of each of the experimental variables. The reaction yield was as high as 48% with a 5M acid concentration, with lower values directly corresponding to lower acid concentrations. ICP/AES results are indicative of the selective dissolution of magnesium with reaction yields. Significant improvements in the removal of moisture, as observed from TGA studies, as well as in the dissolution can be realized with the comminution of particles to a D{sub 50} less than 125 {micro}m. A minimum threshold value of 3M concentration of sulfuric acid was determined to exist in terms of the removal of moisture from serpentine. Contrary to expected, the reaction time, within this design of experiments, has been shown to be insignificant. Potentially coupled with this unexpected result are low BET surface areas of the treated serpentine. These results are issues of further consideration to be addressed under the carbonation studies. The remaining results are as expected, including the dissolution of magnesium, which is to be utilized within the carbonation unit. Phase 1 studies have shown that carbonation reactions could be carried out under a milder regime through the implementation of NaOH titration with the magnesium solution. The optimization of acid concentration, particle size, and reaction temperature will ultimately be determined according to the carbonation efficiencies. Therefore and according to the planned project schedule, research efforts are moving into Task 2 ''Aqueous carbonation'' as the redesign of the reactor unit is nearly completed.

M. Mercedes Maroto-Valer; John M. Andresen; George Alexander

2004-11-15T23:59:59.000Z

359

Bioreduction of Fe-bearing clay minerals and their reactivity toward pertechnetate (Tc-99)  

SciTech Connect (OSTI)

99Technetium (99Tc) is a fission product of uranium-235 and plutonium-239 and poses a high environmental hazard due to its long half-life (t1/2 = 2.13 x 105 y), abundance in nuclear wastes, and environmental mobility under oxidizing conditions [i.e., Tc(VII)]. Under reducing conditions, Tc(VII) can be reduced to insoluble Tc(IV). Ferrous iron [Fe(II)], either in aqueous form or in mineral form, has been used to reduce Tc(VII) to Tc(IV). However, the reactivity of Fe(II) from clay minerals, other than nontronite, toward immobilization of Tc(VII) and its role in retention of reduced Tc(IV) have not been investigated. In this study the reactivity of a suite of clay minerals toward Tc(VII) reduction and immobilization was evaluated. The clay minerals chosen for this study included five members in the smectite-illite (S-I) series, (montmorillonite, nontronite, rectorite, mixed layered I-S, and illite), chlorite, and palygorskite. Fe-oxides were removed from these minerals with a modified dithionite-citrate-bicarbonate (DCB) procedure. The total Fe content of these clay minerals, after Fe-oxide removal, ranged from 0.7 to 30.4% by weight, and the Fe(III)/Fe(total) ratio ranged from 44.9 to 98.5%. X-ray diffraction (XRD) and Mössbauer spectroscopy results showed that after Fe oxide removal the clay minerals were free of Fe-oxides. Scanning electron microscopy (SEM) revealed that little dissolution occurred during the DCB treatment. Bioreduction experiments were performed in bicarbonate buffer (pH-7) with Fe(III) in the clay minerals as the sole electron acceptor, lactate as the sole electron donor, and Shewanella Putrifaciens CN32 cells as mediators. In select tubes, anthraquinone-2,6-disulfate (AQDS) was added as electron shuttle to facilitate electron transfer. The extent of Fe(III) bioreduction was the highest for chlorite (~43 wt%) and the lowest for palygorskite (~4.17 wt%). In the S-I series, NAu-2 was the most reducible (~31 %) and illite the least (~0.4 %). The extent and initial rate of bioreduction were positively correlated with the percent smectite in the S-I series (i.e., layer expandability). Fe(II) in the bioreduced clay minerals subsequently was used to reduce Tc(VII) to Tc(IV) in PIPES buffer. Similar to the trend of bioreduction, in the S-I series, reduced smectite showed the highest reactivity toward Tc(VII), and reduced illite exhibited the least. The initial rate of Tc(VII) reduction, after normalization to clay and Fe(II) concentrations, was positively correlated with the percent smectite in the S-I series. Fe(II) in chlorite and palygorskite was also reactive toward Tc(VII) reduction. These data demonstrate that crystal chemical parameters (layer expandability, Fe and Fe(II) contents, and surface area etc.) play important roles in controlling the extent and rate of bioreduction and the reactivity toward Tc(VII) reduction. Reduced Tc(IV) resides within clay mineral matrix, and this association could minimize any potential of reoxidation over long term.

Bishop, Michael E.; Dong, Hailiang; Kukkadapu, Ravi K.; Liu, Chongxuan; Edelmann, Richard E.

2011-07-01T23:59:59.000Z

360

Sensitivity Study of the Effects of Mineral Dust Particle Nonsphericity and Thin Cirrus Clouds on MODIS Dust Optical Depth Retrievals and Direct Radiative Forcing Calculations  

E-Print Network [OSTI]

A special challenge posed by mineral dust aerosols is associated with their predominantly nonspherical particle shapes. In the present study, the scattering and radiative properties for nonspherical mineral dust aerosols at violet-to-blue (0.412, 0...

Feng, Qian

2011-10-21T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

DHAHRAN 31261 SAUDI ARABIA www.kfupm.edu.sa/math/ E-mail: mathdept@kfupm.edu.sa King Fahd University of Petroleum & Minerals  

E-Print Network [OSTI]

University of Petroleum & Minerals DEPARTMENT OF MATHEMATICAL SCIENCES Technical Report Series TR 359 Oct@fiu.edu and Anwar H. Joarder Department of Mathematical Sciences King Fahd University of Petroleum & Minerals

Joarder, Anwar H

362

The MS-Q Force Field for Clay Minerals: Application to Oil Production Sungu Hwang, Mario Blanco, Ersan Demiralp, Tahir Cagin, and William A. Goddard, III*  

E-Print Network [OSTI]

in studying oil production chemicals, including corrosion inhibitors,11 scale inhibitors,12 and dissolvers.13 and corrosion inhibition). Among the minerals present in the walls of oil reservoirs, clay minerals are believedThe MS-Q Force Field for Clay Minerals: Application to Oil Production Sungu Hwang, Mario Blanco

Ă?agin, Tahir

363

DHAHRAN 31261 SAUDI ARABIA www.kfupm.edu.sa/math/ E-mail: mathdept@kfupm.edu.sa King Fahd University of Petroleum & Minerals  

E-Print Network [OSTI]

University of Petroleum & Minerals DEPARTMENT OF MATHEMATICAL SCIENCES Technical Report Series TR 361 Oct: Department of Mathematics, Hafr Al-Batin Community College, King Fahd University of Petroleum and Minerals, P of Mathematical Sciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia, Email

Mustafa, M. Tahir

364

DHAHRAN 31261 SAUDI ARABIA www.kfupm.edu.sa/math/ E-mail: mathdept@kfupm.edu.sa King Fahd University of Petroleum & Minerals  

E-Print Network [OSTI]

University of Petroleum & Minerals DEPARTMENT OF MATHEMATICAL SCIENCES Technical Report Series TR 360 Oct: Department of Mathematics, Hafr Al-Batin Community College, King Fahd University of Petroleum and Minerals, P of Mathematical Sciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia, Email

Mustafa, M. Tahir

365

Reduction And Immobilization Of Hexavalent Chromium By Microbially Reduced Fe-bearing Clay Minerals  

SciTech Connect (OSTI)

Hexavalent chromium (Cr6+) is a major contaminant in the environment. As a redox-sensitive element, the fate and toxicity of chromium is controlled by reduction-oxidation (redox) reactions. Previous research has shown the ability of structural Fe(II) in naturally present and chemically reduced clay minerals to reduce Cr6+ to Cr(III) as a way of immobilization and detoxification. However, it is still poorly known whether or not structural Fe(II) in biologically reduced clay minerals exhibits a similar reactivity and if so, what the kinetics and mechanisms of Cr6+ reduction are. The objective of this study was to determine the kinetics and possible mechanisms of Cr6+ reduction by structural Fe(II) in microbially reduced clay minerals and the nature of reduced Cr(III). Structural Fe(III) in nontronite (NAu-2), montmorillonite (SWy-2), chlorite (CCa-2), and clay-rich sediments from the Ringold Formation of the Hanford site of Washington State, USA was first bioreduced to Fe(II) by an iron-reducing bacterium Geobacter sulfurreducens with acetate as the sole electron donor and anthraquinone-2,6-disulfate (AQDS) as electron shuttle in synthetic groundwater (pH 7). Biogenic Fe(II) was then used to reduce aqueous Cr6+ at three different temperatures, 10°, 20°, and 30°C, in order to determine the temperature dependence of the redox reaction between Cr6+ and clay-Fe(II). The results showed that nontronite and montmorillonite were most effective in reducing aqueous Cr6+ at all three temperatures. In contrast, most Fe(II) in chlorite was not reactive towards Cr6+ reduction at 10°C, though at 30°C there was some reduction. For all the clay minerals, the ratio of total Fe(II) oxidized to Cr6+ reduced was close to the expected stoichiometric value of 3. Characterization of the Cr-clay reaction product with scanning electron microscopy with focused ion beam and transmission electron microscopy with electron energy loss spectroscopy revealed that reduced chromium was possibly in the form of sub-nanometer Cr2O3 in association with residual clay minerals as micro-aggregates. This textural association was expected to minimize the chance of Cr(III) reoxidation upon exposure to oxidants. These results are important for our understanding of how various clay minerals may be used to reductively immobilize the heavy metal contaminant Cr in the environment.

Bishop, Michael E.; Glasser, Paul; Dong, Hailiang; Arey, Bruce W.; Kovarik, Libor

2014-05-15T23:59:59.000Z

366

Role of minerals in thermal alteration of organic matter. II. A material balance  

SciTech Connect (OSTI)

Pyrolysis experiments were performed on Green River and Monterey Formation kerogens (Types I and II, respectively) with and without calcite, illite, or montmorillonite at 300/sup 0/C for 2 to 1000 hours under dry and hydrous conditions. Pyrolysis products were identified and quantified, and a material balance of product and reactants resulted. Applying the results to maturation of organic matter in natural environments, they suggest that a given type of organic matter associated with different minerals in source rocks will yield different products. Furthermore, the different adsorption capacities of minerals exert a significant influence on the migration of polar and high molecular weight compounds generated from the breakdown of kerogen. Therefore, the overall accumulated products from carbonate source rocks are mainly heavy oils with some gas, whereas light oils and gases are the main products from source rocks that contain expandable clays with catalytic and adsorptive properties. 8 figures, 2 tables.

Tannenbaum, E.; Huizinga, B.J.; Kaplan, I.R.

1986-09-01T23:59:59.000Z

367

Aerobic mineralization of MTBE and tert-butyl alcohol by stream-bed sediment microorganisms  

SciTech Connect (OSTI)

Microorganisms indigenous to the stream-bed sediments at two gasoline-contaminated groundwater sites demonstrated significant mineralization of the fuel oxygenates, methyl tert-butyl ether (MTBE) and tert-butyl alcohol (TBA). Up to 73% of [U-{sup 14}C]-MTBE and 84% of [U-{sup 14}C]-TBA were degraded to {sup 14}CO{sub 2} under mixed aerobic/anaerobic conditions. No significant mineralization was observed under strictly anaerobic conditions. The results indicate that, under the mixed aerobic/anaerobic conditions characteristic of stream-bed sediments, microbial processes may provide a significant environmental sink for MTBE and TBA delivered to surface water bodies by contaminated groundwater or by other sources.

Bradley, P.M.; Landmeyer, J.E.; Chapelle, F.H. [Geological Survey, Columbia, SC (United States)] [Geological Survey, Columbia, SC (United States)

1999-06-01T23:59:59.000Z

368

Exploring the biochemistry at the extracellular redox frontier of bacterial mineral Fe(III) respiration  

SciTech Connect (OSTI)

Many species of the bacterial Shewanella genus are notable for their ability to respire in anoxic environments utilizing insoluble minerals of Fe(III) and Mn(IV) as extracellular electron acceptors. In Shewanella oneidensis, the process is dependent on the decahaem electron-transport proteins that lie at the extracellular face of the outer membrane where they can contact the insoluble mineral substrates. These extracellular proteins are charged with electrons provided by an inter-membrane electron-transfer pathway that links the extracellular face of the outer membrane with the inner cytoplasmic membrane and thereby intracellular electron sources. In the present paper, we consider the common structural features of two of these outermembrane decahaem cytochromes, MtrC and MtrF, and bring this together with biochemical, spectroscopic and voltammetric data to identify common and distinct properties of these prototypical members of different clades of the outer-membrane decahaem cytochrome superfamily.

Richardson, David J.; Edwards, Marcus; White, Gaye F.; Baiden, Nanakow; Hartshorne, Robert S.; Fredrickson, Jim K.; Shi, Liang; Zachara, John M.; Gates, Andrew J.; Butt, Julea N.; Clarke, Thomas

2012-06-01T23:59:59.000Z

369

DEVELOPMENT OF A CO2 SEQUESTRATION MODULE BY INTEGRATING MINERAL ACTIVATION AND AQUEOUS CARBONATION  

SciTech Connect (OSTI)

Mineral carbonation provides a potential option for the long-term storage of carbon dioxide. Serpentine has been chosen as the feedstock mineral, due to its abundance and availability. However, the relatively low reactivity of serpentine has warranted research into physical and chemical treatments that have been shown to greatly increase its reactivity. The use of sulfuric acid as an accelerating medium for the removal of magnesium from serpentine has recently been investigated. In addition to the challenges presented by the dissolution of serpentine, another challenge is the subsequent carbonation of the magnesium ions. A stable hydration sphere for the magnesium ion reduces the carbonation kinetics by obstructing the formation of the carbonation products. Accordingly, this research has evaluated the solubility of carbon dioxide in aqueous solution, the interaction between the dissociation products of carbon dioxide, and the carbonation potential of the magnesium ion.

George Alexander; M. Mercedes Maroto-Valer; Parvana Aksoy; Harold Schobert

2006-03-25T23:59:59.000Z

370

Improved process control through real-time measurement of mineral content  

SciTech Connect (OSTI)

In a highly collaborative research and development project with mining and university partners, sensors and data-analysis tools are being developed for rock-mass characterization and real-time measurement of mineral content. Determining mineralogy prior to mucking in an open-pit mine is important for routing the material to the appropriate processing stream. A possible alternative to lab assay of dust and cuttings obtained from drill holes is continuous on-line sampling and real-time x-ray fluorescence (XRF) spectroscopy. Results presented demonstrate that statistical analyses combined with XRF data can be employed to identify minerals and, possibly, different rock types. The objective is to create a detailed three-dimensional mineralogical map in real time that would improve downstream process efficiency.

Turler, Daniel; Karaca, Murat; Davis, William B.; Giauque, Robert D.; Hopkins, Deborah

2001-11-02T23:59:59.000Z

371

Method for the production of mineral wool and iron from serpentine ore  

SciTech Connect (OSTI)

Magnesium silicate mineral wools having a relatively high liquidus temperature of at least about 1400.degree. C. and to methods for the production thereof are provided. The methods of the present invention comprise melting a magnesium silicate feedstock (e.g., comprising a serpentine or olivine ore) having a liquidus temperature of at least about 1400.degree. C. to form a molten magnesium silicate, and subsequently fiberizing the molten magnesium silicate to produce a magnesium silicate mineral wool. In one embodiment, the magnesium silicate feedstock contains iron oxide (e.g., up to about 12% by weight). Preferably, the melting is performed in the presence of a reducing agent to produce an iron alloy, which can be separated from the molten ore. Useful magnesium silicate feedstocks include, without limitation, serpentine and olivine ores. Optionally, silicon dioxide can be added to the feedstock to lower the liquidus temperature thereof.

O'Connor, William K. (Albany, OR); Rush, Gilbert E. (Scio, OR); Soltau, Glen F. (Lebanon, OR)

2011-10-11T23:59:59.000Z

372

Stratigraphic and structural controls on fluorspar mineralization in northern Valle Las Norias, Coahuila, Mexico  

E-Print Network [OSTI]

Anulty, 1978). A potentially economic deposit exists in the Christmas Mountains, Big Bend National Park, Texas. It occurs in limestone-rhyolite contact zones. If the United States were cut off from existing sources of fluorspar, this deposit could... rhyolitic plugs and dikes resulting in a high felsic to mafic rock ratio. He believed there existed a common ultimate magma source for all intrusives. The felsic rocks resulted from mafic magmas assimilating low-melting-temperature minerals in country...

Rapport, Eric John

1983-01-01T23:59:59.000Z

373

The effect of phosphorus and zinc on mineral nutrition and growth of flax plants  

E-Print Network [OSTI]

THE EFFECT OF PHOSPHORUS AND ZINC ON NINERAL NUTRITICN AND GROWTH OF FLAX PLANTS A THESIS PAUL B. I'IATOCHA, JR. Submitted to the Graduate College of the Texas AkN University in partial fulfillment oi' the requirements for the degree... of PASTER QF SCIENCE January 1967 Najor Subject: Agronomy THE EFFECT OF PHOSPHORUS AND ZINC GN MINERAL NUTRITION AND GROMTH OF FLAX PLANTS A Thesis PAUL B. MATOCHA, JR. Approved as to style and content by: (Chairman of Committee) ~v...

Matocha, Paul B

1967-01-01T23:59:59.000Z

374

Texture and mineralogy of the Upper Gambrian Welge sandstone, Central Mineral region, Texas  

E-Print Network [OSTI]

region of Texas. Textural and mineralogical characteristics were determined f'rom outcrop samples collected at, ten sections throughout the Central Mineral region. These were combined with f'ield observations to provide a means of interpreting... the environmental conditions and the direction of the source area with respect to the location of the ten sections during the time of Welge deposition. The Welge sandstone fs characterised by both areal and vertical homofeneity of sedimentary parameters, grain...

Hooks, James Edward

1961-01-01T23:59:59.000Z

375

Adhesion and the Surface Energy Components of Natural Minerals and Aggregates  

E-Print Network [OSTI]

structure on surface energy, however, has not been rigorously studied. The dominant control on surface energy is certainly surface area. This is proven by the equation to calculate the equilibrium film pressure by Chibowski (CHIBOWSKI and WAKSMUNDZKI... be effectively blocked from sorption by the presence of these molecules or mineral shape. If a reference vapor is used to calculate energy based on adsorption isotherms the component energy may be larger than measured if the vapor molecules are blocked from...

Miller, Clint Matthew

2011-10-21T23:59:59.000Z

376

Synchrotron X-ray Investigations of Mineral-Microbe-Metal Interactions  

SciTech Connect (OSTI)

Interactions between microbes and minerals can play an important role in metal transformations (i.e. changes to an element's valence state, coordination chemistry, or both), which can ultimately affect that element's mobility. Mineralogy affects microbial metabolism and ecology in a system; microbes, in turn, can affect the system's mineralogy. Increasingly, synchrotron-based X-ray experiments are in routine use for determining an element's valence state and coordination chemistry, as well as for examining the role of microbes in metal transformations.

Kemner, Kenneth M.; O'Loughlin, Edward J.; Kelly, Shelly D.; Boyanov, Maxim I.

2008-06-06T23:59:59.000Z

377

Role of minerals in formation of hydrocarbons during pyrolysis of organic matter - a material balance approach  

SciTech Connect (OSTI)

Monterey Formation and Green River Formation kerogens (types II and I, respectively) were isolated, mixed with common sedimentary minerals, and pyrolyzed under dry and hydrous conditions for various times and temperatures. Analysis of all the pyrolyses products were conducted to perform a material balance and to infer reaction kinetics and mechanisms. Material balance of the pyrolyses products, in the presence and absence of minerals, reveals that the kerogen degradation results in the formation of bitumen rich in high molecular weight compounds in the initial stages, followed by additional cracking of kerogen and bitumen. However, amount and type of hydrocarbons in the pyrolyses products of kerogen in the presence of montmorillonite are markedly different from those produced by heating kerogen alone or with other minerals. The initial amounts of products in the presence of montmorillonite, and in particular the quantities of low molecular weight hydrocarbons, are higher than those in the presence of illite, calcite, and kerogen alone. The composition of these low molecular weight compounds is dominated by branched hydrocarbons, indicating catalytic cracking via carbonium ion mechanism, which is initiated on acidic sites of the clay. Composition differences are evident also in the distribution of n-alkanes and in the pristane/phytane ratio. The catalytic effect of montmorillonite, however, disappears in the presence of excess water. These differences may have important implications for the composition and quantities of petroleum generated from source rocks with different mineralogies.

Tannenbaum, E.; Huizinga, B.J.; Kaplan, I.R.

1985-02-01T23:59:59.000Z

378

Phosphate Imposed Limitations on Biological Reduction and Alteration of Ferrihydrite Mineralization  

SciTech Connect (OSTI)

Biogeochemical transformation (inclusive of dissolution) of iron (hydr)oxides resulting from dissimilatory reduction has a pronounced impact on the fate and transport of nutrients and contaminants in subsurface environments. Despite the reactivity noted for pristine (unreacted) minerals, iron (hydr)oxides within native environments will likely have a different reactivity owing in part to changes in surface composition. Accordingly, here we explore the impact of surface modifications induced by phosphate adsorption on ferrihydrite reduction by Shewanella putrefaciens under static and advective flow conditions. Alterations in surface reactivity induced by phosphate adsorption change the extent, nearly linearly, and pathway of iron biomineralization. Magnetite is the most appreciable mineralization product while minor amounts of vivianite and green rust-like phases are formed in systems having high aqueous concentrations of phosphate, ferrous iron, and biogenic bicarbonate. Goethite and lepidocrocite, characteristic biomineralization products at low ferrous-iron concentrations, are inhibited in the presence of adsorbed phosphate. Considering deviations in reactivity of iron (hydr)oxides with changes in surface composition is important for deciphering mineralization pathways under native conditions and predicting reactive characteristics.

Borch, Thomas; Masue, Yoko; Kukkadapu, Ravi K.; Fendorf, Scott

2007-01-01T23:59:59.000Z

379

Spirometry variability criteria--association with respiratory morbidity and mortality in a cohort of coal miners  

SciTech Connect (OSTI)

To clarify the association between spirometry variability and respiratory morbidity and mortality, the authors analyzed data for miners examined in the first round of the National Coal Study, 1969-1971, and they compared groups of miners who failed with those who met each of two spirometry variability criteria: a 5% criterion recommended by the American Thoracic Society, and a 200 ml criterion used in prior research studies. Compared with miners who met the 5% criterion (the best two forced vital capacities must be within 5% or 100 ml of one another), the group that failed had a lower mean for forced expiratory volume in one second (FEV1), and odds ratios for cough, phlegm, wheeze, shortness of breath, and death of 1.75, 1.67, 1.76, 2.71, and 1.30, respectively. The findings for the 200 ml criterion (the best two FEV1s must be within 200 ml of one another) were somewhat different. The group that failed versus the group that met this criterion had a higher mean for FEV1, and odds ratios for cough, phlegm, wheeze, shortness of breath, and death of 1.13, 1.07, 1.15, 1.43, and 0.94, respectively. Although the findings differ for the two criteria, the findings demonstrate that increased spirometry variability is associated with poorer health.

Kellie, S.E.; Attfield, M.D.; Hankinson, J.L.; Castellan, R.M.

1987-03-01T23:59:59.000Z

380

Carbon Mineralization by Aqueous Precipitation for Beneficial Use of CO2 from Flue Gas  

SciTech Connect (OSTI)

The objective of this project is to demonstrate an innovative process to mineralize CO2 from flue gas directly to reactive carbonates and maximize the value and versatility of its beneficial use products. The program scope includes the design, construction, and testing of a CO2 Conversion to Material Products (CCMP) Pilot Demonstration Plant utilizing CO2 from the flue gas of a power production facility in Moss Landing, CA as well as flue gas from coal combustion. This topical report covers Phase 2b, which is the construction phase of pilot demonstration subsystems that make up the integrated plant. The subsystems included are the mineralization subsystem, the Alkalinity Based on Low Energy (ABLE) subsystem, the waste calcium oxide processing subsystem, and the fiber cement board production subsystem. The fully integrated plant is now capable of capturing CO2 from various sources (gas and coal) and mineralizing into a reactive calcium carbonate binder and subsequently producing commercial size (4ftx8ft) fiber cement boards. The topical report provides a description of the “as built” design of these subsystems and the results of the commissioning activities that have taken place to confirm operability. At the end of Phase 2b, the CCMP pilot demonstration is fully ready for testing.

Devenney, Martin; Gilliam, Ryan; Seeker, Randy

2014-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

Fundamental Thermodynamics of Actinide-Bearing Mineral Waste Forms - Final Report  

SciTech Connect (OSTI)

The end of the Cold War raised the need for the technical community to be concerned with the disposition of excess nuclear weapon material. The plutonium will either be converted into mixed-oxide fuel for use in nuclear reactors or immobilized in glass or ceramic waste forms and placed in a repository. The stability and behavior of plutonium in the ceramic materials as well as the phase behavior and stability of the ceramic material in the environment is not well established. In order to provide technically sound solutions to these issues, thermodynamic data are essential in developing an understanding of the chemistry and phase equilibria of the actinide-bearing mineral waste form materials proposed as immobilization matrices. Mineral materials of interest include zircon, zirconolite, and pyrochlore. High temperature solution calorimetry is one of the most powerful techniques, sometimes the only technique, for providing the fundamental thermodynamic data needed to establish optimum material fabrication parameters, and more importantly understand and predict the behavior of the mineral materials in the environment. The purpose of this project is to experimentally determine the enthalpy of formation of actinide orthosilicates, the enthalpies of formation of actinide substituted zirconolite and pyrochlore, and develop an understanding of the bonding characteristics and stabilities of these materials.

Williamson, Mark A.; Ebbinghaus, Bartley B.; Navrotsky, Alexandra

2001-03-01T23:59:59.000Z

382

Mineralization of Basalts in the CO2-H2O-SO2-O2 System. | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SO2-O2 System. Mineralization of Basalts in the CO2-H2O-SO2-O2 System. Abstract: Sequestering carbon dioxide (CO2) containing minor amounts of co-contaminants in geologic...

383

Minerals 2013, 3, 304-317; doi:10.3390/min3030304 ISSN 2075-163X  

E-Print Network [OSTI]

of mineral resources as: "a state of dynamic interplay between environment and society (in a broad sense particularly in the low-carbon energy industry, and global demand outstripping availability. Despite this focus

Vermont, University of

384

Geological and thermal conditions before the major Palaeoproterozoic gold-mineralization event at Ashanti, Ghana, as inferred from improved thermal  

E-Print Network [OSTI]

th , 2006 (*) : Corresponding author: L. Guillou-Frottier, BRGM, Mineral Resources Division, 3 av. C state of the crust and of the lithospheric mantle greatly influences global geodynamics and plate

385

Common variants in the region around Osterix are associated with bone mineral density and growth in childhood  

E-Print Network [OSTI]

Peak bone mass achieved in adolescence is a determinant of bone mass in later life. In order to identify genetic variants affecting bone mineral density (BMD), we performed a genome-wide association study of BMD and related ...

Peltonen, Leena

386

Effects of mineral aerosols on the summertime climate of southwest Asia: Incorporating subgrid variability in a dust emission scheme  

E-Print Network [OSTI]

[1] Improvements in modeling mineral aerosols over southwest Asia are made to the dust scheme in a regional climate model by representing subgrid variability of both wind speed and surface roughness length. The new module ...

Marcella, Marc Pace

387

Laboratory life-fertility table assessment and field biology of millet head miner (Lepidoptera: Noctuidae) in Niger  

E-Print Network [OSTI]

Life tables were used to study millet head miner, Heliocheilus albipunctella de Joannis, under controlled conditions in a laboratory. Population reproductive statistics were estimated and survivorship curves described. Survival, oviposition period...

Abdou Kadi Kadi, Hame

1999-01-01T23:59:59.000Z

388

TITANIUM MINERAL CONCENTRATES1 (Data in thousand metric tons of contained TiO2 unless otherwise noted)  

E-Print Network [OSTI]

as a percentage of estimated consumption 76 78 68 65 68 Recycling: None. Import Sources (2007­10): South Africa of titanium minerals was led by China. Although world mine production increased in 2011, a shortage

389

Smoking cessation among coal miners as predicted by baseline respiratory function and symptoms: a 5-year prospective study  

SciTech Connect (OSTI)

A prospective analysis was used to test whether respiratory impairment or the presence of respiratory symptoms predicts 5-year cigarette smoking cessation in a sample of 1,118 U.S. white, male, underground coal miners. Miners were examined in 1977 and re-examined in 1982 by NIOSH, and all miners with test abnormalities were so informed by letter. Respiratory impairment was measured by an index of airways obstruction combining the spirometric measures of Forced Vital Capacity (FVC) and Forced Expiratory Volume in 1 sec (FEV1). Bronchitis symptoms were measured by an index that combined chronic cough (3+ months/year) and chronic phlegm (3 + months/year). Among these coal miners, the presence of chronic respiratory symptoms initially was inversely associated with cigarette smoking cessation. Respiratory impairment, however, was positively associated with cigarette smoking cessation but did not reach statistical significance.

Ames, R.G.; Hall, D.S.

1985-03-01T23:59:59.000Z

390

Microbial and Chemical Enhancement of In-Situ Carbon Mineralization in Geological Formation  

SciTech Connect (OSTI)

Predictions of global energy usage suggest a continued increase in carbon emissions and rising concentrations of CO{sub 2} in the atmosphere unless major changes are made to the way energy is produced and used. Various carbon capture and storage (CCS) technologies are currently being developed, but unfortunately little is known regarding the fundamental characteristics of CO{sub 2}-mineral reactions to allow a viable in-situ carbon mineralization that would provide the most permanent and safe storage of geologically-injected CO{sub 2}. The ultimate goal of this research project was to develop a microbial and chemical enhancement scheme for in-situ carbon mineralization in geologic formations in order to achieve long-term stability of injected CO{sub 2}. Thermodynamic and kinetic studies of CO{sub 2}-mineral-brine systems were systematically performed to develop the in-situ mineral carbonation process that utilizes organic acids produced by a microbial reactor. The major participants in the project are three faculty members and their graduate and undergraduate students at the School of Engineering and Applied Science and at the Lamont-Doherty Earth Observatory at Columbia University: Alissa Park in Earth and Environmental Engineering & Chemical Engineering (PI), Juerg Matter in Earth and Environmental Science (Co-PI), and Kartik Chandran in Earth and Environmental Engineering (Co-PI). Two graduate students, Huangjing Zhao and Edris Taher, were trained as a part of this project as well as a number of graduate students and undergraduate students who participated part-time. Edris Taher received his MS degree in 2012 and Huangjing Zhao will defend his PhD on Jan. 15th, 2014. The interdisciplinary training provided by this project was valuable to those students who are entering into the workforce in the United States. Furthermore, the findings from this study were and will be published in referred journals to disseminate the results. The list of the papers is given at the end of the report for reference.

Matter, J.; Chandran, K.

2013-05-31T23:59:59.000Z

391

UNDERSTANDING OLIVINE CO2 MINERAL SEQUESTRATION MECHANISMS AT THE ATOMIC LEVEL: OPTIMIZING REACTION PROCESS DESIGN  

SciTech Connect (OSTI)

Carbonation of Mg-rich minerals offers an intriguing candidate carbon sequestration process technology, which can provide large-scale CO{sub 2} disposal. Such disposal bypasses many long-term storage problems by (i) providing containment in the form of mineral carbonates that have proven stable over geological time, (ii) generating only environmentally benign materials, and (iii) essentially eliminating the need for continuous site monitoring. The primary challenge for viable process development is reducing process cost. This is the primary focus of the CO{sub 2} Mineral Sequestration Working Group managed by Fossil Energy at DOE, which includes members from the Albany Research Center, Los Alamos National Laboratory, the National Energy Technology Laboratory, Penn State University, Science Applications International Corporation, and the University of Utah, as well as from our research group at Arizona State University. Carbonation of the widely occurring mineral olivine (e.g., forsterite, Mg{sub 2}SiO{sub 4}) is a leading process candidate, which converts CO{sub 2} into the mineral magnesite (MgCO{sub 3}). As olivine carbonation is exothermic, it offers intriguing low-cost potential. Recent studies at the Albany Research Center have found aqueous-solution carbonation is a promising approach. Cost effectively enhancing carbonation reactivity is central to reducing process cost. Many of the mechanisms that impact reactivity occur at the solid/solution interface. Understanding these mechanisms is central to the ability to engineer new and modified processes to enhance carbonation reactivity and lower cost. Herein, we report the results of our UCR I project, which focused on exploring the reaction mechanisms that govern aqueous-solution olivine carbonation using model olivine feedstock materials. Carbonation was found to be a complex process associated with passivating silica layer formation, which includes the trapping of magnesite nanocrystals within the passivating silica layers, cracking and exfoliation of the layers, silica surface migration, olivine etch pit formation, transfer of the Mg and Fe in the olivine into the product carbonate, and the nucleation and growth of magnesite crystals on/in the silica/olivine reaction matrix. These phenomena occur in concert with the large solid volume changes that accompany the carbonation process, which can substantially impact carbonation reactivity. Passivating silica layer formation appears to play a major role in inhibiting carbonation reactivity. New approaches that can mitigate the effectiveness of passivating layer formation may offer intriguing potential to enhance carbonation reactivity and lower process cost.

M.J. McKelvy; H. Bearat; A.V.G. Chizmeshya; R. Nunez; R.W. Carpenter

2003-08-01T23:59:59.000Z

392

MINERAL-SURFACTANT INTERACTIONS FOR MINIMUM REAGENTS PRECIPITATION AND ADSORPTION FOR IMPROVED OIL RECOVERY  

SciTech Connect (OSTI)

In this project, fundamental studies were conducted to understand the mechanism of the interactions between polymer/surfactant and minerals with the aim of minimizing chemical loss by adsorption. The effects of chemical molecular structure on critical solid/liquid interfacial properties such as adsorption, wettability and surface tension in mineral/surfactant systems were investigated. The final aim is to build a guideline to design optimal polymer/surfactant formula based on the understanding of adsorption and orientation of surfactants and their aggregates at solid/liquid interface. During this period, the adsorption of mixed system of n-dodecyl-{beta}-D-maltoside (DM) and dodecyl sulfonate (C{sub 12}SO{sub 3}Na) was studied. Along with these adsorption studies, changes in mineral wettability due to the adsorption were determined under relevant conditions. pH was found to play a critical role in controlling total adsorption and mineral wettability. Previous studies have suggested significant surfactant loss by adsorption at neutral pH. But at certain pH, bilayer was found at lower adsorption density, which is beneficial for enhanced oil recovery. Analytical ultracentrifuge technique was successfully employed to study the micellization of DM/C{sub 12}SO{sub 3}Na mixtures. Compositional changes of the aggregates in solution were observed when two species were mixed. Surfactant mixture micellization affects the conformation and orientation of adsorption layer at mineral/water interface and thus the wettability and as a result, the oil release efficiency of the chemical flooding processes. Three surfactants C{sub 12}SO{sub 3}, AOT and SLE3 and one polymer were selected into three different binary combinations. Equilibrium surface tension measurement revealed complexation of polymer/surfactant under different conditions. Except for one combination of SLE3/ PVCAP, complexation was observed. It is to be noted that such complexation is relevant to both interfacial properties such as adsorption and wettability as well as rheology. Higher activity of the polymer/surfactant complexes is beneficial for EOR.

P. Somasundaran

2005-10-30T23:59:59.000Z

393

Identification of minerals and meteoritic materials via Raman techniques after capture in hypervelocity impacts on aerogel  

SciTech Connect (OSTI)

For this study, an extensive suite of mineral particles analogous to components of cosmic dust were tested to determine if their Raman signatures can be recognized after hypervelocity capture in aerogel. The mineral particles were mainly of greater than 20 micrometers in size and were accelerated onto the silica aerogel by light gas gun shots. It was found that all the individual minerals captured in aerogel could be subsequently identified using Raman (or fluorescent) spectra. The beam spot size used for the laser illumination was of the order of 5 micrometers, and in some cases the captured particles were of a similar small size. In some samples fired into aerogel there was observed a shift in the wavenumbers of some of the Raman bands, a result of the trapped particles being at quite high temperatures due to heating by the laser. Temperatures of samples under laser illumination were estimated from the relative intensities of Stokes and anti-Stokes Raman bands, or, in the case of ruby particles, from the wavenumber of fluorescence bands excited by the laser. It was found that the temperature of particles in aerogel varied greatly, dependent upon laser power and the nature of the particle. In the worst case, some particles were shown to have temperatures in the 500-700 C range at a laser power of about 3 mW at the sample. However most of the mineral particles examined at this laser power had temperatures below 200 C. This is sufficiently low a temperature not to damage most materials expected to be found captured in aerogel in space. In addition, selected meteorite samples were examined to obtain Raman signatures of their constituent minerals and were then shot into aerogel. It was possible to find several Raman signatures after capture in aerogel and obtain a Raman map of a whole grain in situ in the aerogel. Finally, a Raman analysis was carried out of a particle captured in aerogel in space and carbonaceous material identified. In general therefore it is concluded that Raman analysis is indeed well suited for an in-situ analysis of micrometer sized non-terrestrial materials captured in aerogel.

Burchell, M J; Mann, J; Creighton, J A; Kearsley, A; Graham, G A; Esposito, A P; Franchi, I A; Westphal, A J; Snead, C

2004-10-04T23:59:59.000Z

394

A review of "Paradise Lost, 1668-1968: Three Centuries of Commentary." by Earl Miner senior ed.  

E-Print Network [OSTI]

REVIEWS 41 particularly those interested in Restoration literature, women?s writing, and seventeenth-century history, culture, and society. Earl Miner, senior ed. Wiliam Moeck, co-ed. Steven Jablonski, corr. ed. Paradise Lost, 1668-1968: Three... Centuries of Commentary. Lewisburg, PA: Bucknell University Press, 2004. 510 pp. + 25 illus. $85.00. Review by JOHN MULRYAN, ST. BONAVENTURE UNIVERSITY. This massive scholia of Milton?s Paradise Lost is a fitting tribute to Earl Miner, the senior...

John Mulryan

2005-01-01T23:59:59.000Z

395

Authigenic clay minerals in sandstones of the Delaware Mountain Group: Bell Canyon and Cherry Canyon Formations, Waha Field, West Texas  

E-Print Network [OSTI]

AUTHIGENIC CLAY MINERALS IN SANDSTONES OF THE DELAWARE MOUNTAIN GROUP: BELL CANYON AND CHERRY CANYON FORMATIONS, WAHA FIELD, WEST TEXAS A Thesis by SUZETTE DENISE WALLING Submitted to the Office of Graduate Studies of Texas A&M University... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1992 Major Subject: Geology AUTHIGENIC CLAY MINERALS IN SANDSTONES OF THE DELAWARE MOUNTAIN GROUP: BELL CANYON AND CHERRY CANYON FORMATIONS, WAHA FIELD, WEST TEXAS...

Walling, Suzette Denise

1992-01-01T23:59:59.000Z

396

A comparison of the physical and chemical properties of asbestos, mineral wool and fibrous glass insulation material  

E-Print Network [OSTI]

A COMPARISON OF THE PHYSICAL AND CHEMICAL PROPERTIES OF ASBESTOS, MINERAL WOOL AND FIBROUS GLASS INSULATION MATERIAL A Thesis by MICHAEL GALEN COWAN Submitted to the Graduate College of Texas AMi University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE May 1984 Major Subject: Industrial Hygiene A COMPARISON OF THE PHYSICAL AND CHEMICAL PROPERTIES OF ASBESTOS, MINERAL WOOL AND FIBROUS GLASS INSULATION MATERIAL A Thesis by MICHAEL GALEN COWAN Approved...

Cowan, Michael Galen

2012-06-07T23:59:59.000Z

397

Effects of prescribed fire and varying stand basal area on nitrogen mineralization in a loblolly pine forest  

E-Print Network [OSTI]

by far the most common (Bowen and Smith, 1981), Soil NH4' and NO, concentrations at any particular time reflect rates of mineralization, immobilization, oxidation (nitrification), plant uptake, NH4' fixation, volatilization, denitrification... sites, and the microbial community could provide this mineralized N at a rate that could sustain such an ecosystem. 10 F c or Affectin Ni rifi tion The process of nitrification is more environmentally sensitive than that of ammonification...

Webb, Bobby Glen

1991-01-01T23:59:59.000Z

398

minerals | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Based On Liquid-Crystal Microflows. Abstract: The integration of color filters with microfluidics has attracted substantial attention in recent years, for on-chip absorption,...

399

Injection of CO2 with H2S and SO2 and Subsequent Mineral Trapping in Sandstone-Shale Formation  

SciTech Connect (OSTI)

Carbon dioxide (CO{sub 2}) injection into deep geologic formations can potentially reduce atmospheric emissions of greenhouse gases. Sequestering less-pure CO{sub 2} waste streams (containing H{sub 2}S and/or SO{sub 2}) would be less expensive or would require less energy than separating CO{sub 2} from flue gas or a coal gasification process. The long-term interaction of these injected acid gases with shale-confining layers of a sandstone injection zone has not been well investigated. We therefore have developed a conceptual model of injection of CO{sub 2} with H{sub 2}S and/or SO{sub 2} into a sandstone-shale sequence, using hydrogeologic properties and mineral compositions commonly encountered in Gulf Coast sediments of the United States. We have performed numerical simulations of a 1-D radial well region considering sandstone alone and a 2-D model using a sandstone-shale sequence under acid-gas injection conditions. Results indicate that shale plays a limited role in mineral alteration and sequestration of gases within a sandstone horizon for short time periods (10,000 years in present simulations). The co-injection of SO{sub 2} results in different pH distribution, mineral alteration patterns, and CO{sub 2} mineral sequestration than the co-injection of H{sub 2}S or injection of CO{sub 2} alone. Simulations generate a zonal distribution of mineral alteration and formation of carbon and sulfur trapping minerals that depends on the pH distribution. The co-injection of SO{sub 2} results in a larger and stronger acidified zone close to the well. Precipitation of carbon trapping minerals occurs within the higher pH regions beyond the acidified zones. In contrast, sulfur trapping minerals are stable at low pH ranges (below 5) within the front of the acidified zone. Corrosion and well abandonment due to the co-injection of SO{sub 2} could be important issues. Significant CO{sub 2} is sequestered in ankerite and dawsonite, and some in siderite. The CO{sub 2} mineral-trapping capability can reach 80 kg per cubic meter of medium. Most sulfur is trapped through alunite precipitation, although some is trapped by anhydrite precipitation and minor amount of pyrite. The addition of the acid gases and induced mineral alteration result in changes in porosity. The limited information currently available on the mineralogy of natural high-pressure acid-gas reservoirs is generally consistent with our simulations.

Xu, Tianfu; Apps, John A.; Pruess, Karsten; Yamamoto, Hajime

2004-09-07T23:59:59.000Z

400

Report for Treating Hanford LAW and WTP SW Simulants: Pilot Plant Mineralizing Flowsheet  

SciTech Connect (OSTI)

The US Department of Energy is responsible for managing the disposal of radioactive liquid waste in underground storage tanks at the Hanford site in Washington State. The Hanford waste treatment and immobilization plant (WPT) will separate the waste into a small volume of high level waste (HLW), containing most of the radioactive constituents, and a larger volume of low activity waste (LAW), containing most of the non-radioactive chemical and hazardous constituents. The HLW and LAW will be converted into immobilized waste forms for disposal. Currently there is inadequate LAW vitrification capacity planned at the WTP to complete the mission within the required timeframe. Therefore additional LAW capacity is required. One candidate supplemental treatment technology is the fluidized bed steam reformer process (FBSR). This report describes the demonstration testing of the FBSR process using a mineralizing flowsheet for treating simulated Hanford LAW and secondary waste from the WTP (WTP SW). The FBSR testing project produced leach-resistant solid products and environmentally compliant gaseous effluents. The solid products incorporated normally soluble ions into an alkali alumino-silicate (NaS) mineral matrix. Gaseous emissions were found to be within regulatory limits. Cesium and rhenium were captured in the mineralized products with system removal efficiencies of 99.999% and 99.998 respectively. The durability and leach performance of the FBSR granular solid were superior to the low activity reference material (LMR) glass standards. Normalized product consistency test (PCT) release rates for constituents of concern were approximately 2 orders of magnitude less than that of sodium in the Hanford glass [standard].

Arlin Olson

2012-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

Dust suppression characteristics of mineral oil when applied to corn, wheat, or soybeans  

E-Print Network [OSTI]

and must be added repeatedly. Several water applications could raise the mo i stu re content of grain to the point of encouraging mold growth. Peterson (1977) reported that an average worker wi 1 1 breathe from 4 to 10 m of air during an eight hour work... Jones, B. S. , Texas Al!M University Chairman of Advisory Committee: Dr. Calvin B. Parnell, Jr. Corn, wheat, and soybean samples weighing 454 g each were treated with mineral oil at rates of 50, 100, 200, 400, and 600 ppm and grain dust...

Jones, David Don

1986-01-01T23:59:59.000Z

402

Calibrating the ChemCam LIBS for carbonate minerals on Mars  

SciTech Connect (OSTI)

The ChemCam instrument suite on board the NASA Mars Science Laboratory (MSL) rover includes the first LIBS instrument for extraterrestrial applications. Here we examine carbonate minerals in a simulated martian environment using the LIDS technique in order to better understand the in situ signature of these materials on Mars. Both chemical composition and rock type are determined using multivariate analysis (MVA) techniques. Composition is confirmed using scanning electron microscopy (SEM) techniques. Our initial results suggest that ChemCam can recognize and differentiate between carbonate materials on Mars.

Wiens, Roger C [Los Alamos National Laboratory; Clegg, Samuel M [Los Alamos National Laboratory; Ollila, Ann M [Los Alamos National Laboratory; Barefield, James E [Los Alamos National Laboratory; Lanza, Nina [Los Alamos National Laboratory; Newsom, Horton E [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

403

Pseudophasic extraction method for the separation of ultra-fine minerals  

DOE Patents [OSTI]

An improved aqueous-based extraction method for the separation and recovery of ultra-fine mineral particles. The process operates within the pseudophase region of the conventional aqueous biphasic extraction system where a low-molecular-weight, water soluble polymer alone is used in combination with a salt and operates within the pseudo-biphase regime of the conventional aqueous biphasic extraction system. A combination of low molecular weight, mutually immiscible polymers are used with or without a salt. This method is especially suited for the purification of clays that are useful as rheological control agents and for the preparation of nanocomposites.

Chaiko, David J. (Naperville, IL)

2002-01-01T23:59:59.000Z

404

Investigations of Iron Minerals Formed by Dissimilatory Alkaliphilic Bacterium with {sup 57}Fe Moessbauer Spectroscopy  

SciTech Connect (OSTI)

Anaerobic alkaliphilic bacterium of Geoalkalibacter ferrihydriticus type (strain Z-0531), isolated from a bottom sediment sample from the weakly mineralized soda Lake Khadyn, have been analyzed. The strain uses the amorphous Fe(III)-hydroxide (AFH) as an electron acceptor and acetate CH{sub 3}COO{sup -} as an electron donor. Moessbauer investigations of solid phase samples obtained during the process of the bacterium growth were carried out at room temperature, 77.8 K, 4.2 K without and with the presence of an external magnetic field (6 T) applied perpendicular to the {gamma}-bebam.

Chistyakova, N. I.; Rusakov, V. S.; Shapkin, A. A. [M.V. Lomonosov Moscow State University, Faculty of Physics, Leninskie gory, 119991 Moscow (Russian Federation); Zhilina, T. N.; Zavarzina, D. G. [Institute of Microbiology, Russian Academy of Science, 7/2, Prospekt 60-letiya Oktyabrya, 117312 Moscow (Russian Federation); Lancok, A. [Institute of Inorganic Chemistry, v.v.i., 25608 Husinec-Rez (Czech Republic); Kohout, J. [Faculty of Mathematics and Physics, Charles University, Ovocny trh 5 116 36 Praha 1 (Czech Republic)

2010-07-13T23:59:59.000Z

405

Mineralization of Basalts in the CO2-H2O-H2S System. | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource Program PreliminaryA3,0 Alabama - NaturalHanford TankMineralization

406

Heterogeneous Chemistry of Individual Mineral Dust Particles from Different Dust Source Regions: The Importance of Particle Mineralogy  

SciTech Connect (OSTI)

The heterogeneous chemistry of individual dust particles from four different dust source regions is investigated on a particle-by-particle basis using state-of-the-art scanning electron microscopy techniques including computer-controlled scanning electron microscopy/computer-controlled X-ray analysis (CCSEM/EDX). Morphology and compositional changes of individual particles as they react with nitric acid are observed. Clear differences in the reactivity of mineral dusts from these four different dust regions with nitric acid could be observed. Mineral dust from source regions containing high levels of calcium, such as those found in parts of China and Saudi Arabia, are found to react to the greatest extent. Calcium containing minerals, such as calcite (CaCO3) and dolomite (CaMg(CO3)2), react to form nitrate salt whereas other calcium containing minerals such as gypsum (CaSO4?2H2O) do not react. The importance of particle chemical composition and mineralogy in the heterogeneous chemistry of mineral dust aerosols is definitively borne out in this study of individual dust particles.

Krueger, Brenda J.; Grassian, Vicki H.; Cowin, James P.; Laskin, Alexander

2004-11-01T23:59:59.000Z

407

Associations of symptoms related to isocyanate, ureaformol, and formophenolic exposures with respiratory symptoms and lung function in coal miners  

SciTech Connect (OSTI)

The respiratory effects of diphenylmethane diisocyanate (MDI)-based resins and ureaformol- and formophenolic-based resins, used in coal mining, are unknown. This cross-sectional study of 354 miners evaluated respiratory health in miners with MDI-related symptoms (IS) and ureaformol/formophenolic-related symptoms (UFS). The protocol included clinical examination, chest radiograph, questionnaire on respiratory symptoms, smoking habit, job history, resin handling, and spirometry. Resin handling concerned 27.7% of the miners. IS affected 5.6%, and 1.4% also after work. UFS affected 22.6%, and 2.3% also after work. Wheezing affected 35.6%; chronic cough, expectoration, or bronchitis about 10%; dyspnea 5.4%; and asthma 2.8%. The miners with UFS had significantly more frequent chronic cough, expectoration, chronic bronchitis, dyspnea, and wheezing, whereas those with IS at and after work had markedly lower FVC, FEV1, MMEF, FEF50% and FEF25%. These findings raise the possibility of deleterious effects of exposures to MDI and ureaformol/ ormophenolic resins on respiratory health and lung function in coal miners during their working life.

Bertrand, J.P.; Simon, V.; Chau, N. [Houilleres Bassin Lorraine, Freyming Merlebach (France)

2007-04-15T23:59:59.000Z

408

QUANTIFICATION OF ACTINIDE ALPHA-RADIATION DAMAGE IN MINERALS AND CERAMICS  

SciTech Connect (OSTI)

There are large amounts of heavy alpha-emitters in nuclear waste and nuclear materials inventories stored in various sites around the world. These include plutonium and minor actinides such as americium and curium. In preparation for geological disposal there is a consensus that actinides that have been separated from spent nuclear fuel should be immobilised within mineral-based ceramics rather than glass. Over the long-term, the alpha-decay taking place in these ceramics will severely disrupt their crystalline structure and reduce their durability. A fundamental property in predicting cumulative radiation damage is the number of atoms permanently displaced per alpha–decay. Currently, this number is estimated as 1000-2000 atoms/alpha decay event. Here, we report nuclear magnetic resonance, spin-counting experiments that measure close to 5000 atoms/alpha decay event in radiation damaged natural zircons. New radiological NMR measurements on highly radioactive, 239Pu zircon show damage similar to that created by 238U and 232Th in mineral zircons at the same dose, indicating no significant effect of dose rate. Based on these measurements, the initially crystalline structure of a 10 wt% 239Pu zircon would be amorphous after only 1400 years in a geological repository. These measurements establish a basis for assessing the long-term structural durability of actinide-containing ceramics based on an atomistic understanding of the fundamental damage event.

Farnan, Ian E.; Cho, Herman M.; Weber, William J.

2007-01-11T23:59:59.000Z

409

Stable isotopes of authigenic minerals in variably-saturated fractured tuff  

SciTech Connect (OSTI)

Identifying stable isotope variation and mineralogical changes in fractured rock may help establish the history of climatic and geomorphological processes that might affect the isolation properties of a waste repository site. This study examines the use of the stable isotope ratios of oxygen ({sup 18}O/{sup 16}O) and carbon ({sup 13}C/{sup 12}C) in authigenic minerals as hydrogeochemical tools tracing low-temperature rock-water interaction in variably-saturated fractured stuff. Isotopic compositions of fracture-filling and rock matrix minerals in the Apache Leap tuff, near Superior, Arizona were concordant with geothermal temperatures and in equilibrium with water isotopically similar to present-day meteoric water and groundwater. Oxygen and carbon isotope ratios of fracture-filling, in unsaturated fractured tuff, displayed an isotopic gradient believed to result from near-surface isotopic enrichment due to evaporation rather than the effects of rock-water interaction. Oxygen isotope ratios of rock matrix opal samples exhibited an isotopic gradient believed to result from, leaching and reprecipitation of silica at depth. Methods and results can be used to further define primary flowpaths and the movement of water in variably-saturated fractured rock. 71 refs., 23 figs., 3 tabs.

Weber, D.S.; Evans, D.D.

1988-11-01T23:59:59.000Z

410

Use of mineralizer in black meal process for improved clinkerization and conservation of energy  

SciTech Connect (OSTI)

The high cost of energy and the consumption of almost three times the net theoretical heat required in clinkering process continue to be a nagging problem faced by VSK plants. There is, therefore, a need for energy conservation which could be rapidly and economically accomplished by promoting the clinker formation at lower temperature. The use of fluxes for lowering the melting point of the raw mix is an important measure to save energy, giving economic benefits. Fluxes and mineralizers improve burnability and quality of clinker, solving particularly the free lime problem faced by cement plants. The purpose of the present paper is to highlight the role of CaF{sub 2} and CaSO{sub 4} as mineralizers with industrial raw mix in VSK technology in conserving energy and improving the quality of clinker. The use of CaF{sub 2}, CaSO{sub 4}, or a mixture of CaF{sub 2} and CaSO{sub 4} promotes the clinker formation at lower temperature, giving direct implication on commercial production with economic benefits without affecting the quality.

Raina, K.; Janakiraman, L.K. [National Council for Cement and Building Materials, New Delhi (India)] [National Council for Cement and Building Materials, New Delhi (India)

1998-08-01T23:59:59.000Z

411

Identification of concrete deteriorating minerals by polarizing and scanning electron microscopy  

SciTech Connect (OSTI)

The deterioration of concrete represents one of the most serious problems of civil engineering worldwide. Besides other processes, deterioration of concrete consists of sulfate attack and carbonation. Sulfate attack results in the formation of gypsum, ettringite and thaumasite in hardened concrete. Products of sulfate attack may cause a loss of material strength and a risk of collapse of the concrete constructions. The authors focused especially on the microscopical research of sulfate attack. Concrete samples were taken from the Charles Bridge in Prague, Czech Republic. A succession of degrading mineral formation was suggested. Microscope methods represent a new approach to solving the deterioration problems. They enable evaluation of the state of concrete constructions and in cooperation with hydro-geochemistry, mathematics and statistics permit prediction of the durability of a structure. Considering the number of concrete constructions and their age, research of concrete deterioration has an increasing importance. The results obtained can also be useful for future construction, because they identify the risk factors associated with formation of minerals known to degrade structures.

Gregerova, Miroslava, E-mail: mirka@sci.muni.cz [Masaryk University in Brno, Faculty of Science, Institute of Geological Sciences, Kotlarska 2, 611 37 Brno (Czech Republic); Vsiansky, Dalibor, E-mail: daliborv@centrum.cz [Research Institute of Building Materials, JSC., Hnevkovskeho 65, 617 00 Brno (Czech Republic)

2009-07-15T23:59:59.000Z

412

Rapid electron exchange between surface-exposed bacterial cytochromes and Fe(III) minerals  

SciTech Connect (OSTI)

The mineral respiring bacterium Shewanella oneidensis uses a protein complex, MtrCAB, composed of two decaheme cytochromes brought together inside a transmembrane porin to transport electrons across the outer membrane to a variety of mineral-based electron acceptors. A proteoliposome system that contains methyl viologen as an internalised electron carrier has been used to investigate how the topology of the MtrCAB complex relates to its ability to transport electrons across a lipid bilayer to externally-located Fe(III) oxides. With MtrA facing the interior and MtrC exposed on the outer surface of the phospholipid bilayer, direct electron transfer from the interior through MtrCAB to solid-phase Fe(III) oxides was demonstrated. The observed rates of conduction through the protein complex were 2 to 3 orders of magnitude higher than that observed in whole cells, demonstrating that direct electron exchange between MtrCAB and Fe(III) oxides is efficient enough to support in-vivo, anaerobic, solid phase iron respiration.

White, Gaye F.; Shi, Zhi; Shi, Liang; Wang, Zheming; Dohnalkova, Alice; Marshall, Matthew J.; Fredrickson, Jim K.; Zachara, John M.; Butt, Julea N.; Richardson, David; Clarke, Thomas A.

2013-04-16T23:59:59.000Z

413

Modifiers of Exposure-Response Estimates for Lung Cancer among Miners Exposed to Radon Progeny  

E-Print Network [OSTI]

The association between lung cancer and exposure to radon decay products has been well established. Despite agreement on this point, there is still some degree of uncertainty regarding characteristics of the exposure-response relationship. The use of studies of underground miners to estimate lung cancer risks due to residential radon exposure depends upon a better understanding of factors potentially modifying the exposure-response relationship. Given the diversity in study populations regarding smoking status, mining conditions, risk analysis methodology, and referent populations, the risk estimates across studies are quite similar. However, several factors partially contributing to differences in risk estimates are modified by attained age, time since last exposure, exposure rate, and cigarette smoking patterns. There is growing agreement across studies that relative risk decreases with attained age and time since last exposure. Several studies have also found an inverse exposure-rate effect, i.e., low exposure rates for protracted duration of exposure are more hazardous than equivalent cumulative exposures received at higher rates for shorter periods of time. Additionally, the interaction between radon exposure and cigarette smoking appears to be intermediate between additive and multiplicative in a growing number of studies. Quantitative estimates of these modifying factors are given using a new analysis of data from the latest update of the Colorado Plateau uranium miners cohort.- Environ Health Perspect 1 03(Suppl 2):49-53 (1995)

Richard W. Hornung; James Deddens; Robert Roscoe

414

Biogenic iron mineralization accompanying the dissimilatory reduction of hydrous ferric oxide by a groundwater bacterium  

SciTech Connect (OSTI)

The purpose of this research was to investigate the bacterial reduction of hydrous ferric oxide (HFO) by Shewanella putrefaciens and the nature of biogenic secondary phase formation in the presence of different inorganic ligands (PO{sub 4} and HCO{sub 3}) under conditions that may promote or suppress the organism/oxide association (i.e., with and without an electron shuttle). The electron shuttle used, anthraquinone-2,6-disulfonate (AQDS), is both a humic acid analog and a soluble redox indicator. The goal was to provide insights on biogeochemical factors governing dissimilatory biogenic mineralization in sediment or groundwater systems. The authors have investigated the influence of AQDS on the rate and extent of HFO reduction in different buffered systems and utilized X-ray diffraction, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) to evaluate the crystallographic and morphologic features of the biogenic precipitates. The biogenic phase association is interpreted in light of aqueous solution conditions, pe, solid phase thermodynamic stability, and microbiological considerations including metabolic status and growth with the intent of identifying unique microbiological contributions to secondary mineralization.

Fredrickson, J.K.; Zachara, J.M.; Kennedy, D.W.; Li, S.M. [Pacific Northwest National Lab., Richland, WA (United States)] [Pacific Northwest National Lab., Richland, WA (United States); Dong, H.; Onstott, T.C. [Princeton Univ., NJ (United States). Dept. of Geosciences] [Princeton Univ., NJ (United States). Dept. of Geosciences; Hinman, N.W. [Univ. of Montana, Missoula, MT (United States). Dept. of Geology] [Univ. of Montana, Missoula, MT (United States). Dept. of Geology

1998-10-01T23:59:59.000Z

415

A review of "Literature and Religious Culture in Seventeenth-Century England." by Reid Barbour  

E-Print Network [OSTI]

. The community at Great Tew prized reason, censured violence, defended doubt and even dissent, and embraced a universalist soteriology. Barbour shows that Great Tew and REVIEWS 163 Little Gidding, paradoxically, both challenged and helped to sustain the court...

Holly Faith Nelson

2005-01-01T23:59:59.000Z

416

Reid Rosnick/DC/USEPA/US 10/04/2011 10:22 AM  

E-Print Network [OSTI]

(my favorite has been the MBTA), and I hate to bug you about this, but I'm looking at my current with all sorts of projects (my favorite has been the MBTA), and I hate to bug you about this, but I cannot avoid the emergency projects that keep popping up (like the MBTA issue), which unfortunately

417

TO: Reid Rosnick, Radiation Protection Division, Environmental Protection Agency FROM: Sarah M. Fields, Uranium Watch  

E-Print Network [OSTI]

: Sarah M. Fields, Uranium Watch DATE: November 25, 2009 RE: EPA REVIEW OF 40 CFR PART 61, SUBPART W -- RADON NESHAP FOR OPERATING URANIUM RECOVERY FACILITIES Below are some issues that the Environmental radionuclide NESHAPS in a timely manner. · Failure to properly implement radionuclide NESHAPS for uranium mills

418

Reid Rosnick/DC/USEPA/US 01/03/2012 08:07 AM  

E-Print Network [OSTI]

, Philip Egidi, Susan Stahle, Tom Peake bcc Subject Subpart W Stakeholders Conference Call Meeting Date 01 Schultheisz; Philip Egidi; Susan Stahle; Tom Peake FYI Location Call-in number - 866-299-3188 Conference Code

419

March 23, 2009 The Honorable Nancy Pelosi The Honorable Harry Reid  

E-Print Network [OSTI]

Assessment Report by the IPCC (AR4) reveals that warming of global #12;mean temperature by 2 or more degrees) long-term targets that allow for stabilization of global temperatures at levels that prevent many of the worst impacts of climate change. Global warming is unequivocal. The IPCC reports state

420

Andrea E. Reid, M.D., M.P.H. INFORMATION  

E-Print Network [OSTI]

to practice State: District of Columbia License No: MD038392 Initial Date: 01/01/2011 Renewal/Expiration Date Providence, RI 02912 9/1980-6/1984 ScB with Honors, Psychology Medical Education: Harvard Medical School 25

Goodrich, Lisa V.

Note: This page contains sample records for the topic "reid miner ncasi" 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

Selfalignment of a binocular robot I. D. Reid and P. A. Beardsley  

E-Print Network [OSTI]

/H77668, and by a Glasstone Fellowship to IDR. The authors acknowledge many useful discussions with Andrew

Oxford, University of

422

Stereo Fixation using Affine Transfer* Stuart M. Fairley Ian D. Reid David W. Murray  

E-Print Network [OSTI]

Research Studentship to SMF and by a Glasstone Fellowship to IDR. We are extremely grateful for many useful

Murray, David

423

1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1948: Reid Bryson  

E-Print Network [OSTI]

1996: TEMPO project (Testing Earth System Models with Paleoenvironmental Observations 2001: Kutzbach

Sheridan, Jennifer

424

A review of "Sir Thomas Browne: A Life" by Reid Barbour  

E-Print Network [OSTI]

26) cites recent scholarship (1998-99) that refutes this early nineteenth-century orthodoxy. Right from the start Barbour enters Browne’s world of words in portraying that life as a “miracle,” a “fable” or “peece of Poetry.” From 1637, after...

Todd, Richard

2014-01-01T23:59:59.000Z

425

Secretaries Chu and Salazar will Join Senator Reid to Make Solar Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage » SearchEnergy EconomyWindHydrogenHydrogen &PageSecretarial

426

Secretary Chu and Senator Reid to Make Major Energy Announcement for Nevada  

Broader source: Energy.gov (indexed) [DOE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research |Regulation Services2014Need forDepartmentof theofD.C.Secretary| Department|

427

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing  

SciTech Connect (OSTI)

Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, wear problems of mineral processing equipment including screens, sieve bends, heavy media vessel, dewatering centrifuge, etc., were identified. A novel surface treatment technology, high density infrared (HDI) surface coating process was proposed for the surface enhancement of selected mineral processing equipment. Microstructural and mechanical properties of the coated samples were characterized. Laboratory-simulated wear tests were conducted to evaluate the tribological performance of the coated components. Test results indicate that the wear resistance of AISI 4140 and ASTM A36 steels can be increased 3 and 5 folds, respectively by the application of HDI coatings.

Daniel Tao; Craig A. Blue

2004-08-01T23:59:59.000Z

428

Modeling dust as component minerals in the Community Atmosphere Model: development of framework and impact on radiative forcing  

SciTech Connect (OSTI)

The mineralogy of desert dust is important due to its effect on radiation, clouds and biogeochemical cycling of trace nutrients. This study presents the simulation of dust radiative forcing as a function of both mineral composition and size at the global scale using mineral soil maps for estimating emissions. Externally mixed mineral aerosols in the bulk aerosol module in the Community Atmosphere Model version 4 (CAM4) and internally mixed mineral aerosols in the modal aerosol module in the Community Atmosphere Model version 5.1 (CAM5) embedded in the Community Earth System Model version 1.0.5 (CESM) are speciated into common mineral components in place of total dust. The simulations with mineralogy are compared to available observations of mineral atmospheric distribution and deposition along with observations of clear-sky radiative forcing efficiency. Based on these simulations, we estimate the all-sky direct radiative forcing at the top of the atmosphere as +0.05Wm?2 for both CAM4 and CAM5 simulations with mineralogy and compare this both with simulations of dust in release versions of CAM4 and CAM5 (+0.08 and +0.17Wm?2) and of dust with optimized optical properties, wet scavenging and particle size distribution in CAM4 and CAM5, ?0.05 and ?0.17Wm?2, respectively. The ability to correctly include the mineralogy of dust in climate models is hindered by its spatial and temporal variability as well as insufficient global in-situ observations, incomplete and uncertain source mineralogies and the uncertainties associated with data retrieved from remote sensing methods.

Scanza, Rachel; Mahowald, N.; Ghan, Steven J.; Zender, C. S.; Kok, J. F.; Liu, Xiaohong; Zhang, Y.; Albani, Samuel

2015-01-01T23:59:59.000Z

429

Volcanic stratigraphy and secondary mineralization of U. S. G. S. Pucci geothermal test well, Mount Hood, Oregon  

SciTech Connect (OSTI)

Ninety-one sample splits of drill cuttings from approximately 6.1 m intervals in the 610 m hole that was completed in 1979 were provided for this study. An additional 225 sample splits (3.05 m intervals) from 536 m to the bottom of the drill hole at 1220 m were added to the study following the deepening of the drill hole. Stratigraphic and petrologic observations of the cuttings were made. Scanning electron microscope and x-ray diffractometer examinations were made of alteration minerals. The lithology and secondary mineralization are discussed.

Gannett, M.W.; Bargar, K.E.

1981-01-01T23:59:59.000Z

430

The effect of unidentified factor supplements and trace minerals on the reproductive performance of turkeys and chickens  

E-Print Network [OSTI]

of Unidentified Factor ". euces and Trace Minerals nn Egg Froonction 5 n ~ Hens During 20 Week Test ~ e o ~ ~ ~ ~ ~ ~ e ~ 3g Table 3 Effect of Unidentified Factor Bonrces ?nd Trace Minerals on Weight of Eggs Lau ~inc Hens ~ ~ ~ o ~ ~ ~ e ~ ~ ~ ~ e e ~ a 36... of foxnwxtation res14ua to the diet (group 4) vas 15. N carer th? basal group (Table 2), %hi the fexnantation residue vas fed in cmhLnation with condensed fiab solubles or Wth condensed fiab solubles and dried bracer's yeasty the hatchabilitg was increased...

Whiteside, Charles Hugh

1958-01-01T23:59:59.000Z

431

Relative Dating and Classification of Minerals and Rocks Based on Statistical Calculations Related to Their Potential Energy Index  

E-Print Network [OSTI]

Index of proportionality of atomic weights of chemical elements is proposed for determining the relative age of minerals and rocks. Their chemical analysis results serve to be initial data for calculations. For rocks of different composition the index is considered to be classification value as well. Crystal lattice energy change in minerals and their associations can be measured by the index value change, thus contributing to the solution of important practical problems. There was determined the effect of more rapid increase of potential energy of limestone with relatively low lattice energy as compared with the others.

Labushev, Mikhail M

2012-01-01T23:59:59.000Z

432

Molecular interactions of SO2 with carbonate minerals under co-sequestration conditions: a combined experimental and theoretical study  

SciTech Connect (OSTI)

We present a combined experimental and theoretical study investigating the reactivity between selected and morphologically important surfaces of carbonate minerals with supercritical CO2 with co-existing H2O and SO2. Trace amounts of SO2 cause formation of CaSO3 in the form of hannebachite in the initial stages of SO2 adsorption and transformation. Atomistic simulations of these initial steps indicate a somewhat catalytic activity of water, which is enhanced by the presence of Magnesium atoms in the mineral surface. Under co-sequestration conditions, traces of water are not likely to cause carbonate dissolution, however the presence of SO2 greatly stabilizes the sulfite product.

Glezakou, Vassiliki Alexandra; McGrail, B. Peter; Schaef, Herbert T.

2012-09-01T23:59:59.000Z

433

The Origin of Refractory Minerals in Comet 81P/Wild 2  

SciTech Connect (OSTI)

Refractory Ti-bearing minerals in the calcium-, aluminium-rich inclusion (CAI) Inti, recovered from the comet 81P/Wild 2 sample, were examined using analytical (scanning) transmission electron microscopy (STEM) methods including imaging, nanodiffraction, energy dispersive spectroscopy (EDX) and electron energy loss spectroscopy (EELS). Inti fassaite (Ca(Mg,Ti,Al)(Si,Al){sub 2}O{sub 6}) was found to have a Ti{sup 3+}/Ti{sup 4+} ratio of 2.0 {+-} 0.2, consistent with fassaite in other solar system CAIs. The oxygen fugacity (log f{sub O{sub 2}}) of formation estimated from this ratio, assuming equilibration among phases at 1509K, is -19.4 {+-} 1.3. This value is near the canonical solar nebula value (-18.1 {+-} 0.3) and in close agreement with that reported for fassaite-bearing Allende CAIs (-19.8 {+-} 0.9) by other researchers using the same assumptions. Nanocrystals of osbornite (Ti(V)N), 2-40 nm in diameter, are embedded as inclusions within anorthite, spinel and diopside in Inti. Vanadium is heterogeneously distributed within some osbornite crystals. Compositions range from pure TiN to Ti{sub 0.36}V{sub 0.64}N. The possible presence of oxide and carbide in solid solution with the osbornite was evaluated. The osbornite may contain O but does not contain C. The presence of osbornite, likely a refractory early condensate, together with the other refractory minerals in Inti, indicates that the parent comet contains solids that condensed closer to the proto-sun than the distance at which the parent comet itself accreted. The estimated oxygen fugacity and the reported isotopic and chemical compositions are consistent with Inti originating in the inner solar system as opposed to it being a surviving CAI from an extrasolar source. These results provide insight for evaluating the validity of models of radial mass transport dynamics in the early solar system. The oxidation environments inferred for the Inti mineral assemblage are inconsistent with an X-wind formation scenario. In contrast, radial mixing models allowing accretion of components from different heliocentric distances can satisfy the observations from the cometary CAI Inti.

Chi, M; Ishii, H A; Simon, S B; Bradley, J P; Dai, Z R; Joswiak, D J; Browning, N D; Matrajt, G

2008-11-20T23:59:59.000Z

434

Fluidized Bed Steam Reforming of INEEL SBW Using THORsm Mineralizing Technology  

SciTech Connect (OSTI)

Sodium bearing waste (SBW) disposition is one of the U.S. Department of Energy (DOE) Idaho Operation Office’s (NE-ID) and State of Idaho’s top priorities at the Idaho National Engineering and Environmental Laboratory (INEEL). Many studies have resulted in the identification of five treatment alternatives that form a short list of perhaps the most appropriate technologies for the DOE to select from. The alternatives are (a) calcination with maximum achievable control technology (MACT) upgrade, (b) steam reforming, (c) cesium ion exchange (CsIX) with immobilization, (d) direct evaporation, and (e) vitrification. Each alternative has undergone some degree of applied technical development and preliminary process design over the past four years. DOE desired further experimental data, with regard to steam reforming technology, to make informed decisions concerning selection of treatment technology for SBW. Mineralizing steam reforming technology, offered by THOR Treatment Technologies, LLC would produce a denitrated, granular mineral waste form using a high-temperature fluidized bed process. A pilot scale demonstration of the technology was performed in a 15-cm-diameter reactor vessel September 27 through October 1, 2004. The pilot scale equipment is owned by the DOE, and located at the Science and Technology Applications Research (STAR) Center in Idaho Falls, ID. Flowsheet chemistry and operational parameters were defined through a collaborative effort involving Idaho National Engineering and Environmental Laboratory, Savannah River National Laboratory (SRNL), and THOR Treatment Technologies personnel. Personnel from Science Applications International Corporation, owners of the STAR Center, operated the pilot plant. The pilot scale test was terminated as planned after achieving a total of 100 hrs of cumulative/continuous processing operation. About 230 kg of SBW surrogate were processed that resulted in about 88 kg of solid product, a mass reduction of about 62%. The process achieved about a 90% turnover of the starting bed. Samples of mineralized solid product materials were analyzed for chemical/physical properties. Results of product performance testing conducted by SRNL will be reported separately by SRNL.

Arlin L. Olson; Nicholas R. Soelberg; Douglas W. Marshall; Gary L. Anderson

2004-12-01T23:59:59.000Z

435

Fluidized Bed Steam Reforming of Hanford LAW Using THORsm Mineralizing Technology  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) documented, in 2002, a plan for accelerating cleanup of the Hanford Site, located in southeastern Washington State, by at least 35 years. A key element of the plan was acceleration of the tank waste program and completion of ''tank waste treatment by 2028 by increasing the capacity of the planned Waste Treatment Plant (WTP) and using supplemental technologies for waste treatment and immobilization.'' The plan identified steam reforming technology as a candidate for supplemental treatment of as much as 70% of the low-activity waste (LAW). Mineralizing steam reforming technology, offered by THOR Treatment Technologies, LLC would produce a denitrated, granular mineral waste form using a high-temperature fluidized bed process. A pilot scale demonstration of the technology was completed in a 15-cm-diameter reactor vessel. The pilot scale facility was equipped with a highly efficient cyclone separator and heated sintered metal filters for particulate removal, a thermal oxidizer for reduced gas species and NOx destruction, and a packed activated carbon bed for residual volatile species capture. The pilot scale equipment is owned by the DOE, but located at the Science and Technology Applications Research (STAR) Center in Idaho Falls, ID. Pilot scale testing was performed August 2–5, 2004. Flowsheet chemistry and operational parameters were defined through a collaborative effort involving Idaho National Engineering and Environmental Laboratory, Savannah River National Laboratory (SRNL), and THOR Treatment Technologies personnel. Science Application International Corporation, owners of the STAR Center, personnel performed actual pilot scale operation. The pilot scale test achieved a total of 68.7 hrs of cumulative/continuous processing operation before termination in response to a bed de-fluidization condition. 178 kg of LAW surrogate were processed that resulted in 148 kg of solid product, a mass reduction of about 17%. The process achieved essentially complete bed turnover within approximately 40 hours. Samples of mineralized solid product materials were analyzed for chemical/physical properties. SRNL will report separately the results of product performance testing that were accomplished.

Olson, Arlin L.; Nicholas R Soelberg; Douglas W. Marshall; Gary L. Anderson

2004-11-01T23:59:59.000Z

436

Mineral fiber content of lung tissue in patients with environmental exposures: household contacts vs building occupants  

SciTech Connect (OSTI)

Analysis of tissue mineral fiber content in patients with environmental exposures has seldom been reported in the past. Our studies of six household contacts of asbestos workers indicate that these individuals often have pulmonary asbestos concentrations similar to some occupationally exposed individuals. In contrast, our studies of four occupants of buildings with asbestos-containing materials indicate that these individuals often have pulmonary asbestos burdens indistinguishable from the general nonoccupationally exposed population. However, one such building occupant exposed for many years and who later developed pleural mesothelioma was studied in detail, and it was concluded that her exposure as a teacher's aide in a school building containing acoustical plaster was the likely cause of her mesothelioma.

Roggli, V.L.; Longo, W.E. (Department of Pathology, Durham Veterans Administration, NC (United States))

1991-12-31T23:59:59.000Z

437

Towards a better understanding of the structure of nano-minerals at ambient and extreme conditions  

SciTech Connect (OSTI)

The high-pressure (HP) behavior of nano-crystalline mackinawite (n-FeS) with particle sizes of 6, 7, and 8 nm has been investigated by high-energy X-ray total scattering and pair distribution function analysis. An irreversible first-order structural phase transition from tetragonal mackinawite to orthorhombic FeS-II was observed at about 3 GPa. The transition is induced by the closure of the van-der-Waals gap in the layered mackinawite structure. A grain size effect on the transition pressure and the compressibility was observed. The n-FcS study is an example of a broad class of nano-crystalline minerals where the total scattering (TS) approach provides significant new information on local-, intermediate- and long-range structure. Under extreme conditions, of pressure in this case, straightforward modifications allow quantitative descriptions of the transformations mechanisms.

Parise, John B.; Ehm, Lars; Michel, F. Marc [Stony Brook University, Department of Geosciences and Mineral Physics Institute (United States); Antao, Sytle; Chupas, Peter J.; Lee, Peter L.; Martin, C. David; Shastri, Sarvjit [X-ray Science Division, Argonne National Laboratory, Argonne IL 60439 (United States)

2009-01-29T23:59:59.000Z

438

Combining lifecycle and risk assessments of mineral waste reuse scenarios for decision making support  

SciTech Connect (OSTI)

Lack of regulations and standards on mineral waste recycling makes Life Cycle Assessment (LCA) and Ecological Risk Assessment (ERA) useful methods for environmental assessment of recycling scenarios. An unsolved problem arises whenever two scenarios of recycling have to be compared according to both ERA and LCA impact results considered simultaneously. A methodology to combine LCA and ERA results and tools toward Integrated Environmental Assessment (IEA) is proposed together with three application examples based on case studies. The most effective combination approach is to define further impact categories for ERA to be considered with the standard LCA ones. Then, the use of a multicriteria analysis method was proved to be an efficient way to rank alternative scenarios with respect to all the results. The key issues to be further researched are discussed and proposals are suggested.

Benetto, Enrico [ECOINNOVA France, 47 rue M. Flandin, 69003 Lyon Cedex 3 (France)]. E-mail: benetto@ecoinnova.it; Tiruta-Barna, Ligia [INSA Lyon-LAEPSI, 20 rue A.Einstein, 69621 Villeurbanne cedex, since November 2005: INSA Toulouse-LIPE, 135 av. de Rangueil, 31077 Toulouse cedex France (France)]. E-mail: ligia.barna@insa-toulouse.fr; Perrodin, Yves [ENTPE-LSE, rue M.Audin, 69518 Vaulx-en-Velin cedex (France)]. E-mail: perrodin@entpe.fr

2007-04-15T23:59:59.000Z

439

Evaluation of coal minerals and metal residues as coal-liquefaction catalysts. Final report  

SciTech Connect (OSTI)

The catalytic activity of various minerals, metallic wastes, and transition metals was investigated in the liquefaction of various coals. The effects of coal type, process variables, coal cleaning, catalyst addition mode, solvent quality, and solvent modification on coal conversion and oil production were also studied. Coal conversion and oil production improved significantly by the addition of pyrite, reduced pyrite, speculite, red mud, flue dust, zinc sulfide, and various transition metal compounds. Impregnation and molecular dispersion of iron gave higher oil production than particulate incorporation of iron. However, the mode of molybdenum addition was inconsequential. Oil production increased considerably both by adding a stoichiometric mixture of iron oxide and pyrite and by simultaneous impregnation of coal with iron and molybdenum. Hydrogenation activity of disposable catalysts decreased sharply in the presence of nitrogen compounds. The removal of heteroatoms from process solvent improved thermal as well as catalytic coal liquefaction. The improvement in oil production was very dramatic with a catalyst.

Garg, D.; Givens, E. N.; Schweighardt, F. K.; Tarrer, A. R.; Guin, J. A.; Curtis, C. W.; Huang, W. J.; Shridharani, K.; Clinton, J. H.

1982-02-01T23:59:59.000Z

440

Evaluation of replacement thread lubricants for red lead and graphite in mineral oil  

SciTech Connect (OSTI)

Eight commercially available thread lubricants were evaluated to determine the best replacement for Red Lead and Graphite in Mineral Oil (RLGMO). The evaluation included coefficient of friction testing, high temperature anti-seizing testing, room temperature anti-galling testing, chemical analysis for detrimental impurities, corrosion testing, off-gas testing, and a review of health and environmental factors. The coefficient of friction testing covered a wide variety of factors including stud, nut, and washer materials, sizes, manufacturing methods, surface coatings, surface finishes, applied loads, run-in cycles, and relubrication. Only one lubricant, Dow Corning Molykote P37, met all the criteria established for a replacement lubricant. It has a coefficient of friction range similar to RLGMO. Therefore, it can be substituted directly for RLGMO without changing the currently specified fastener torque values for the sizes, materials and conditions evaluated. Other lubricants did not perform as well as Molykote P37 in one or more test or evaluation categories.

Jungling, T.L.; Rauth, D.R.; Goldberg, D.

1998-04-30T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" 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

Enchanted Clays: 44th Annual Meeting of the Clay Minerals Society (June 2007)  

SciTech Connect (OSTI)

“Enchanted Clays: 44th Annual Meeting of the Clay Minerals Society” was held in early June 2007 in beautiful and historic Santa Fe, New Mexico, USA. Santa Fe provided an idyllic location in the southwestern United States for the attendees to enjoy technical and social sessions while soaking up the diverse culture and wonderful climate of New Mexico—The Land of Enchantment. The meeting included a large and varied group of scientists, sharing knowledge and ideas, benefitting from technical interactions, and enjoying the wonderful historic and enchanted environs of Santa Fe. Including significant number of international scientists, the meeting was attended by approximately two hundred participants. The meeting included three days of technical sessions (oral and poster presentations), three days of field trips to clay and geological sites of northern New Mexico, and a full day workshop on the stabilization of carbon by clays. Details can be found at the meeting web site: www.sandia.gov/clay.

Randall T. Cygan

2007-06-01T23:59:59.000Z

442

Solubility relationships of aluminium and iron minerals associated with acid mine drainage  

SciTech Connect (OSTI)

The ability to properly manage the oxidation of pyritic minerals and associated acid mine drainage is dependent upon understanding the chemistry of the disposal environment. One accepted disposal method is placing pyritic-containing materials in the groundwater environment. The objective of this study was to examine solubility relationships of Al and Fe minerals associated with pyritic waste disposed in a low leaching aerobic saturated environment. Two eastern oil shales were used in this oxidizing equilibration study, a New Albany Shale (unweathered, 4.6 percent pyrite), and a Chattanooga Shale (weathered, 1.5 percent pyrite). Oil shale samples were equilibrated with distilled-deionized water from 1 to 180 d with a 1:1 solid-to-solution ratio. The suspensions were filtered and the clear filtrates were analyzed for total cations and anions. Ion activities were calculated from total concentrations. Below pH 6.0, depending upon SO{sub 4}{sup 2{minus}} activity, Al{sup 3+} solubility was controlled by AlOHSO{sub 4} (solid phase) for both shales. The results of this study indicate that below pH 6.0, Al{sup 3+} and Fe{sup 3+} solubilities, are limited by basic Al and Fe sulfate solid phases (AlOHSO{sub 4(s)} and FeHSO{sub 4(s)}). The results from this study further indicate that the acidity in oil shale waters is produced from the hydrolysis of Al{sup 3+} and Fe{sup 3+} activities in solution. These results indicate a fundamental change in the stoichiometric equations used to predict acidity from iron sulfide oxidation. The results of this study also indicate that water quality predictions associated with acid mine drainage can be based on fundamental thermodynamic relationships. As a result, waste management decisions can be based on waste-specific/site test methods.

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

1988-06-01T23:59:59.000Z

443

IONIZATION IN ATMOSPHERES OF BROWN DWARFS AND EXTRASOLAR PLANETS. III. BREAKDOWN CONDITIONS FOR MINERAL CLOUDS  

SciTech Connect (OSTI)

Electric discharges were detected directly in the cloudy atmospheres of Earth, Jupiter, and Saturn, are debatable for Venus, and indirectly inferred for Neptune and Uranus in our solar system. Sprites (and other types of transient luminous events) have been detected only on Earth, and are theoretically predicted for Jupiter, Saturn, and Venus. Cloud formation is a common phenomenon in ultra-cool atmospheres such as in brown dwarf and extrasolar planetary atmospheres. Cloud particles can be expected to carry considerable charges which may trigger discharge events via small-scale processes between individual cloud particles (intra-cloud discharges) or large-scale processes between clouds (inter-cloud discharges). We investigate electrostatic breakdown characteristics, like critical field strengths and critical charge densities per surface, to demonstrate under which conditions mineral clouds undergo electric discharge events which may trigger or be responsible for sporadic X-ray emission. We apply results from our kinetic dust cloud formation model that is part of the DRIFT-PHOENIX model atmosphere simulations. We present a first investigation of the dependence of the breakdown conditions in brown dwarf and giant gas exoplanets on the local gas-phase chemistry, the effective temperature, and primordial gas-phase metallicity. Our results suggest that different intra-cloud discharge processes dominate at different heights inside mineral clouds: local coronal (point discharges) and small-scale sparks at the bottom region of the cloud where the gas density is high, and flow discharges and large-scale sparks near, and maybe above, the cloud top. The comparison of the thermal degree of ionization and the number density of cloud particles allows us to suggest the efficiency with which discharges will occur in planetary atmospheres.

Helling, Ch.; Jardine, M.; Stark, C. [SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS (United Kingdom); Diver, D., E-mail: ch@leap2010.eu [SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ (United Kingdom)

2013-04-20T23:59:59.000Z

444

Lithotrophic iron-oxidizing bacteria produce organic stalks to control mineral growth: implications for biosignature formation  

SciTech Connect (OSTI)

Neutrophilic Fe-oxidizing bacteria (FeOB) are often identified by their distinctive morphologies, such as the extracellular twisted ribbon-like stalks formed by Gallionella ferruginea or Mariprofundus ferrooxydans. Similar filaments preserved in silica are often identified as FeOB fossils in rocks. Although it is assumed that twisted iron stalks are indicative of FeOB, the stalk's metabolic role has not been established. To this end, we studied the marine FeOB M. ferrooxydans by light, X-ray and electron microscopy. Using time-lapse light microscopy, we observed cells excreting stalks during growth (averaging 2.2 {micro}m h(-1)). Scanning transmission X-ray microscopy and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy show that stalks are Fe(III)-rich, whereas cells are low in Fe. Transmission electron microscopy reveals that stalks are composed of several fibrils, which contain few-nanometer-sized iron oxyhydroxide crystals. Lepidocrocite crystals that nucleated on the fibril surface are much larger ({approx}100 nm), suggesting that mineral growth within fibrils is retarded, relative to sites surrounding fibrils. C and N 1s NEXAFS spectroscopy and fluorescence probing show that stalks primarily contain carboxyl-rich polysaccharides. On the basis of these results, we suggest a physiological model for Fe oxidation in which cells excrete oxidized Fe bound to organic polymers. These organic molecules retard mineral growth, preventing cell encrustation. This model describes an essential role for stalk formation in FeOB growth. We suggest that stalk-like morphologies observed in modern and ancient samples may be correlated confidently with the Fe-oxidizing metabolism as a robust biosignature.

Chan, Clara S; Fakra, Sirine C; Emerson, David; Fleming, Emily J; Edwards, Katrina J

2011-07-01T23:59:59.000Z

445

MINERAL-SURFACTANT INTERACTIONS FOR MINIMUM REAGENTS PRECIPITATION AND ADSORPTION FOR IMPROVED OIL RECOVERY  

SciTech Connect (OSTI)

During this reporting period, further fundamental studies were conducted to understand the mechanism of the interactions between surfactants and minerals with the aim of minimizing chemical loss by adsorption. The effects of pH and mixing ratio on the chemical loss by adsorption were investigated. Some preliminary modeling work has been done towards the aim of developing a guide book to design optimal polymer/surfactant formula based on the understanding of adsorption and orientation of surfactants and their aggregates at solid/liquid interfaces. The study of adsorption of mixed system of n-dodecyl-{beta}-D-maltoside (DM) and dodecyl sulfonate (C{sub 12}SO{sub 3}Na) was continued during this period. Based on the adsorption results, the effects of pH and mixing ratio on reagent loss were quantitatively evaluated. Adsorption of dodecyl maltoside showed a maximum at certain mixing ratio at low pH (3{approx}5), while adsorption of dodecyl maltoside steadily decreased with the increase in C{sub 12}SO{sub 3}Na. Analytical ultracentrifuge technique was employed to study the micellization of DM/C{sub 12}SO{sub 3}Na mixtures. Compositional changes of the aggregates were observed the mixing ratio of the components. Surfactant mixture micellization affects the conformation and orientation of adsorption layer at mineral/water interface and thus the wettability and as a result, the oil release efficiency of the chemical flooding processes. A preliminary term, Reagent Loss Index (RLI), has been proposed to represent the adsorption of all the surfactants in a standardized framework for the development of the models. Previously reported adsorption data have been analyzed using the theoretical framework for the preparation of a guidebook to help optimization of chemical combinations and selection of reagent scheme for enhanced oil recovery.

P. Somasundaran

2006-04-30T23:59:59.000Z

446

"Memory loss" during mineral processing: application to base metals traceability Julie Machault (1, 2, *), Luc Barbanson (1), Thierry Aug (2), Laurent Bailly (2) et Alexandre  

E-Print Network [OSTI]

processing, target minerals, Neves Corvo. 1 Introduction The demand in mineral resources is increasing" is proposed and the relations between memory loss and global kinetic rate of flotation are established. The "global memory loss", namely as the "the experimental memory loss". For the Neves Corvo plant

Paris-Sud XI, Université de

447

Geological Setting, Mineral Resources and ancient works of Samos and adjacent islands of the Aegean Sea, 26-30 August 2013, Karlovassi, Samos Island, Greece  

E-Print Network [OSTI]

Geological Setting, Mineral Resources and ancient works of Samos and adjacent islands of the Aegean (modified from Vigil and Tilling, 2006). #12;Geological Setting, Mineral Resources and ancient works spreading centers compose a global ridge system where new ocean crust is formed (divergent boundary

448

Climate response and radiative forcing from mineral aerosols during the last glacial maximum, pre-industrial, current and doubled-carbon  

E-Print Network [OSTI]

Climate response and radiative forcing from mineral aerosols during the last glacial maximum, pre-industrial, current and doubled-carbon dioxide climates Natalie M. Mahowald,1,2 Masaru Yoshioka,1,2 William D. Collins July 2006; accepted 9 August 2006; published 27 October 2006. [1] Mineral aerosol impacts on climate

Mahowald, Natalie

449

MINERALAVATER INTERFACE USING MOLECULAR SCALE TECHNIQUES An understanding of the kinetics and mechanisms of metal sorption on soil minerals and soils is  

E-Print Network [OSTI]

and mechanisms of metal sorption on soil minerals and soils is fundamental in assessing the speciation, mobility be understood if accurate predictions are to be made about metal fate/mobility and soil remediation. With some metals (e.g., Co, Ni, Zn) residence time affects the rate of metal release from soil minerals while

Sparks, Donald L.

450

Physico-chemical modifications of the interactions between hemp fibres and a lime mineral matrix: impacts on mechanical properties of mortars  

E-Print Network [OSTI]

Physico-chemical modifications of the interactions between hemp fibres and a lime mineral matrix interactions between hemp fibres and a lime-based mineral matrix, the consequences of various chemical treatments onto hemp fibres characteristics were measured using scanning electron microscopy, thermal

Paris-Sud XI, Université de

451

Mineral hints at bright blue rocks deep in the Earth 12 March 2014 Last updated at 21:16 ET | By Simon Redfern Science writer  

E-Print Network [OSTI]

Mineral hints at bright blue rocks deep in the Earth 12 March 2014 Last updated at 21:16 ET | By Simon Redfern Science writer Minerals preserved in diamond have revealed hints of the bright blue and back, which it has." Blue planet Prof Joseph Smyth of the University of Colorado has spent many

Machel, Hans

452

NEW MEXICO BUREAU OF GEOLOGY & MINERAL RESOURCES, BULLETIN 160, 2004 Cosmogenic 36Cl ages of lava flows in the ZuniBandera  

E-Print Network [OSTI]

309 NEW MEXICO BUREAU OF GEOLOGY & MINERAL RESOURCES, BULLETIN 160, 2004 Cosmogenic 36Cl ages of lava flows in the Zuni­Bandera volcanic field, northcentral New Mexico, U.S.A. Nelia W. Dunbar1 and Fred M. Phillips2 1New Mexico Bureau of Geology and Mineral Resources, New Mexico Institute of Mining

Dunbar, Nelia W.

453

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

SciTech Connect (OSTI)

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

454

Effects of Preexisting Microdamage, Collagen Cross-Links, Degree of Mineralization, Age, and Architecture on Compressive Mechanical  

E-Print Network [OSTI]

, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts Received 15- link profile, microdamage and mineralization. Ă? 2010 Orthopaedic Research Society. Published by Wiley cross-link profile may also play a role, yet the contribution of these factors to human trabecular bone

Boyer, Edmond

455

Chemical composition of dust storms in Beijing and implications for the mixing of mineral aerosol with pollution aerosol  

E-Print Network [OSTI]

with pollution aerosol on the pathway Yele Sun,1 Guoshun Zhuang,1,2,3 Ying Wang,1 Xiujuan Zhao,1,4 Jie Li,5 Zifa direction could be seen as the ``polluted'' pathway and the north-northwesterly direction as the relatively ``less-polluted'' one. Dust storms not only delivered large amounts of mineral elements but also carried

456

Single-scattering properties of tri-axial ellipsoidal mineral dust aerosols: A database for application to radiative transfer calculations  

E-Print Network [OSTI]

Single-scattering properties of tri-axial ellipsoidal mineral dust aerosols: A database Applications and Research, Camp Spring, MD 20746, USA a r t i c l e i n f o Article history: Received 14 Optical properties Database a b s t r a c t This paper presents a user-friendly database software package

Liou, K. N.

457

Photo-production of lactate from glyoxylate: how minerals can facilitate energy storage in a prebiotic world  

E-Print Network [OSTI]

Photo-production of lactate from glyoxylate: how minerals can facilitate energy storage fixation and energy storage at the time life originated (Scheme 1A).2­5 Moreover, products of the r in a prebiotic world Marcelo I. Guzman and Scot T. Martin Received (in Cambridge, UK) 18th November 2009

458

3rd International Conference on Sustainable Development Indicators 73 in the Minerals Industry, June 2007, Milos island, Greece  

E-Print Network [OSTI]

3rd International Conference on Sustainable Development Indicators 73 in the Minerals Industry sustainable development policies and guidelines in place that provide guidance for operations, and report The importance of sustainable development principles has been increasing within the mining sector over the past

459

Temperature Effects on Nickel Sorption Kinetics at the MineralWater Interface Kirk G. Scheckel* and Donald L. Sparks  

E-Print Network [OSTI]

of for the formation of these precipitates, such as themetals onto natural materials results in the formation of new mineral- like precipitate phases that increase in stability with aging time. While energy of activation, and enthalpy, entropy, and free these findings have demonstrated the usefulness of current state-of- energies

Sparks, Donald L.

460

TIME-RESOLVED RAMAN SPECTROSCOPY OF MARS ANALOG MINERALS AND ORGANICS. J. Blacksberg1 Y. Maruyama1  

E-Print Network [OSTI]

1 , E. Alerstam1 , C. Cochrane1 , G.R.Rossman2 , S. Shkolyar3 , J. Farmer3 , 1 Jet Propulsion, California 91125, grr@gps.caltech.edu. 3 School of Earth and Space Exploration, Arizona State University are identified, Raman spectroscopy has the potential to map out minerals on the grain scale and potentially find

Rossman. George R.

Note: This page contains sample records for the topic "reid miner ncasi" 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

Does variation in mineral composition alter the short-wave light scattering properties of desert dust aerosol?  

E-Print Network [OSTI]

retrievals of mineral dust aerosol from space by visible and near-infrared radiometers. Errors in aerosol depth in deserts and the surrounding regions during periods of high wind. Long range transport of desert particles into the air [6] (wind alone does not have sufficient energy to remove particles from the surface

Oxford, University of

462

Lung cancer in uranium miners and the implications of the U/V ratio in uranium-bearing particles  

SciTech Connect (OSTI)

Several geological formations mined for uranium ore during and after the second World War had been mined earlier for vanadium. Most miners and millers from the Utah-Colorado mining region worked with this ore or its tailings at one time or another. Preliminary investigation to determine the size and location of uranium-bearing particles retained in the lungs of a former uranium miner and miller from this region, who died of lung cancer (mesothelioma), showed a high nonuniform distribution of vanadium. This observation leads to the hypothesis that the vanadium content in that lung could be associated with inhaled particles. Further examination of spectra of characteristic x-rays obtained by scanning microPIXE (particle induced x-ray emission) of an autopsy sample of this lung indicated that vanadium was indeed present in localized sites within the 20 ..mu..m spatial resolution of the proton beam. This work points out that the vanadium found in the lungs of this former miner and miller is nonuniformly distributed, and can be used for site localization and size determination of inhaled particles retained in the lungs. The meaning of U/V ratios in dust particles and in lungs is discussed. Further studies are in progress to: (1) locate uranium-bearing particles in lung tissues of former uranium miners and millers; and (2) evaluate the local alpha doses received from these particles. 11 refs., 3 figs., 1 tab.

Paschoa, A.S.; Wrenn, M.E.; Singh, N.P.; Bruenger, F.W.; Miller, S.C.; Cholewa, M.; Jones, K.W.

1985-01-01T23:59:59.000Z

463

Controls on the genesis of hydrothermal cobalt mineralization: insights from the mineralogy and geochemistry of the Bou Azzer deposits, Morocco  

E-Print Network [OSTI]

Controls on the genesis of hydrothermal cobalt mineralization: insights from the mineralogy,Ni,Fe) arsenides and sulpharsenides, with accessory sulphides and gold in a quartz-carbonate gangue. The ore-Ni-Fe, avec des quantités mineures de sulphures et de l'or dans une gangue de quartz- carbonate. Les minerais

464

Formation of Crystalline Zn-Al Layered Double Hydroxide Precipitates on Alumina: The Role of Mineral Dissolution  

E-Print Network [OSTI]

Formation of Crystalline Zn-Al Layered Double Hydroxide Precipitates on Alumina: The Role) phases in soils, we systematically examined the presence of Al and the role of mineral dissolution during Zn sorption/precipitation on -Al2O3 (-alumina) at pH 7.5 using extended X-ray absorption fine

Sparks, Donald L.

465

Kinetics and mechanisms of metal sorption at the soil mineral/water interface: The continuum from adsorption to  

E-Print Network [OSTI]

GEOC 36 Kinetics and mechanisms of metal sorption at the soil mineral/water interface: The continuum from adsorption to precipitation Donald L. Sparks, Plant and Soil Sciences Department, Plant and Soil Sciences Department, University of Delaware, 531 S. College Avenue, Townsend Hall, Room 153

Sparks, Donald L.

466

Inorganic composition of fine particles in mixed mineral dustpollution plumes observed from airborne measurements during ACE-Asia  

E-Print Network [OSTI]

of the atmosphere (2419, 2427); 0345 Atmospheric Composition and Structure: Pollution--urban and regional (0305Inorganic composition of fine particles in mixed mineral dust­pollution plumes observed from of Earth and Atmospheric Science, Georgia Institute of Technology, Atlanta, Georgia, USA G. R. Carmichael

Weber, Rodney

467

Role of oxidized, S-rich mafic magmas for giant Cu mineralization: Evidence from Pinatubo, Bingham Canyon and El Teniente  

E-Print Network [OSTI]

dacitic magma chamber (~ 800/C), then acid-sulphatehydrothermal fluids. At Bingham Canyon, UtahRole of oxidized, S-rich mafic magmas for giant Cu mineralization: Evidence from Pinatubo, Bingham Canyon and El Teniente Hattori, K.H. and De Hoog, J.C.M., Earth Sciences, Univ. Ottawa, Ottawa, K1N 6N5

468

Effective mineral exploration programs maximize the ben-efit of appropriate technologies in order to increase cost  

E-Print Network [OSTI]

to help in the exploration process and to test the effectiveness of dif- ferent methods overEffective mineral exploration programs maximize the ben- efit of appropriate technologies in order of discovery. In other words, correct use of available tools can allow exploration programs to find more ore

Oldenburg, Douglas W.

469

J Bone Miner Res . Author manuscript Fracture risk prediction using BMD and clinical risk factors in early  

E-Print Network [OSTI]

,651 peri- and early post-menopausal women (mean age (± SD): 54 4 yr) with a mean follow-up period of 13 Density ; Female ; Fractures, Bone ; etiology ; Humans ; Middle Aged ; Osteoporosis, Postmenopausal definition of osteoporosis ( ), i.e. a bone mineral density (BMD) value less than 2.5 standard deviations

Paris-Sud XI, Université de

470

Colloids and Surfaces A: Physicochem. Eng. Aspects 256 (2005) 207216 Retention of mineral colloids in unsaturated porous  

E-Print Network [OSTI]

Colloids and Surfaces A: Physicochem. Eng. Aspects 256 (2005) 207­216 Retention of mineral colloids theory, where removal of col- loidal particles from the fluid phase is governed by physico- chemical transport is also subject to physical constraint, i.e., colloid physical entrap- ment in pore throats

Flury, Markus

471

Comparative Study for the Interpretation of Mineral Concentrations, Total Porosity, and TOC in Hydrocarbon-Bearing Shale from Conventional Well  

E-Print Network [OSTI]

, and TOC in Hydrocarbon-Bearing Shale from Conventional Well Logs Haryanto Adiguna, SPE, Anadarko Petroleum, and mineral composition is an integral part of unconventional shale reservoir formation evaluation. Porosity requirement for economically viable flow of gas in very-low permeability shales. Brittle shales are favorable

Torres-VerdĂ­n, Carlos

472

Phyllosilicates In this lab you will examine specimens of the phyllosilicate or sheet silicate minerals. In regard to  

E-Print Network [OSTI]

Phyllosilicates In this lab you will examine specimens of the phyllosilicate or sheet silicate, you should simply know that they are hydrous alumino-silicates (Al will substitute for Si) and you- silicate with K, Mg and Fe". Mineral formulae are provided for convenience. Phyllosilicates Serpentine

Dundas, Robert G.

473

Reactive geochemical transport simulation to study mineral trapping for CO2 disposal in deep saline arenaceous aquifers  

SciTech Connect (OSTI)

A reactive fluid flow and geochemical transport numerical model for evaluating long-term CO{sub 2} disposal in deep aquifers has been developed. Using this model, we performed a number of sensitivity simulations under CO{sub 2} injection conditions for a commonly encountered Gulf Coast sediment to analyze the impact of CO{sub 2} immobilization through carbonate precipitation. Geochemical models are needed because alteration of the predominant host rock aluminosilicate minerals is very slow and is not amenable to laboratory experiment under ambient deep-aquifer conditions. Under conditions considered in our simulations, CO{sub 2} trapping by secondary carbonate minerals such as calcite (CaCO{sub 3}), dolomite (CaMg(CO{sub 3}){sub 2}), siderite (FeCO{sub 3}), and dawsonite (NaAlCO{sub 3}(OH){sub 2}) could occur in the presence of high pressure CO{sub 2}. Variations in precipitation of secondary carbonate minerals strongly depend on rock mineral composition and their kinetic reaction rates. Using the data presented in this paper, CO{sub 2} mineral-trapping capability after 10,000 years is comparable to CO{sub 2} dissolution in pore waters (2-5 kg CO{sub 2} per cubic meter of formation). Under favorable conditions such as increase of the Mg-bearing mineral clinochlore (Mg{sub 5}Al{sub 2}Si{sub 3}O{sub 10}(OH){sub 8}) abundance, the capacity can be larger (10 kg CO{sub 2} per cubic meter of formation) due to increase of dolomite precipitation. Carbon dioxide-induced rock mineral alteration and the addition of CO{sub 2} mass as secondary carbonates to the solid matrix results in decreases in porosity. A maximum 3% porosity decrease is obtained in our simulations. A small decrease in porosity may result in a significant decrease in permeability. The numerical simulations described here provide useful insight into sequestration mechanisms, and their controlling conditions and parameters.

Xu, Tianfu; Apps, John A.; Pruess, Karsten

2002-04-01T23:59:59.000Z

474

Oak Ridge National Laboratory Old Hydrofracture Facility Waste Remediation Using the Borehole-Miner Extendible-Nozzle Sluicer  

SciTech Connect (OSTI)

A borehole-miner extendible-nozzle sluicing system was designed, constructed, and deployed at Oak Ridge National Laboratory to remediate five horizontal underground storage tanks containing sludge and supernate at the ORNL Old Hydrofracture Facility site. The tanks were remediated in fiscal year 1998 to remove {approx}98% of the waste, {approx}3% greater than the target removal of >95% of the waste. The tanks contained up to 18 in. of sludge covered by supernate. The 42,000 gal of low level liquid waste were estimated to contain 30,000 Ci, with 97% of this total located in the sludge. The retrieval was successful. At the completion of the remediation, the State of Tennessee Department of Environment and Conservation agreed that the tanks were cleaned to the maximum extent practicable using pumping technology. This deployment was the first radioactive demonstration of the borehole-miner extendible-nozzle water-jetting system. The extendible nozzle is based on existing bore hole-miner technology used to fracture and dislodge ore deposits in mines. Typically borehole-miner technology includes both dislodging and retrieval capabilities. Both dislodging, using the extendible-nozzle water-jetting system, and retrieval, using a jet pump located at the base of the mast, are deployed as an integrated system through one borehole or riser. Note that the extendible-nozzle system for Oak Ridge remediation only incorporated the dislodging capability; the retrieval pump was deployed through a separate riser. The borehole-miner development and deployment is part of the Retrieval Process Development and Enhancements project under the direction of the US Department of Energy's EM-50 Tanks Focus Area. This development and deployment was conducted as a partnership between RPD and E and the Oak Ridge National Laboratory's US DOE EM040 Old Hydrofracture Facility remediation project team.

Bamberger, J.A.; Boris, G.F.

1999-10-07T23:59:59.000Z

475

FLUIDIZED BED STEAM REFORMING MINERALIZATION FOR HIGH ORGANIC AND NITRATE WASTE STREAMS FOR THE GLOBAL NUCLEAR ENERGY PARTNERSHIP  

SciTech Connect (OSTI)

Waste streams that may be generated by the Global Nuclear Energy Partnership (GNEP) Advanced Energy Initiative may contain significant quantities of organics (0-53 wt%) and/or nitrates (0-56 wt%). Decomposition of high nitrate streams requires reducing conditions, e.g. organic additives such as sugar or coal, to reduce the NO{sub x} in the off-gas to N{sub 2} to meet the Clean Air Act (CAA) standards during processing. Thus, organics will be present during waste form stabilization regardless of which GNEP processes are chosen, e.g. organics in the feed or organics for nitrate destruction. High organic containing wastes cannot be stabilized with the existing HLW Best Developed Available Technology (BDAT) which is HLW vitrification (HLVIT) unless the organics are removed by preprocessing. Alternative waste stabilization processes such as Fluidized Bed Steam Reforming (FBSR) operate at moderate temperatures (650-750 C) compared to vitrification (1150-1300 C). FBSR converts organics to CAA compliant gases, creates no secondary liquid waste streams, and creates a stable mineral waste form that is as durable as glass. For application to the high Cs-137 and Sr-90 containing GNEP waste streams a single phase mineralized Cs-mica phase was made by co-reacting illite clay and GNEP simulated waste. The Cs-mica accommodates up to 30% wt% Cs{sub 2}O and all the GNEP waste species, Ba, Sr, Rb including the Cs-137 transmutation to Ba-137. For reference, the cesium mineral pollucite (CsAlSi{sub 2}O{sub 6}), currently being studied for GNEP applications, can only be fabricated at {ge} 1000 C. Pollucite mineralization creates secondary aqueous waste streams and NO{sub x}. Pollucite is not tolerant of high concentrations of Ba, Sr or Rb and forces the divalent species into different mineral host phases. The pollucite can accommodate up to 33% wt% Cs{sub 2}O.

Jantzen, C; Michael Williams, M

2008-01-11T23:59:59.000Z

476

Protecting Biodiversity: A Guide to Criteria Used by Global  

E-Print Network [OSTI]

of NCASI, Nadine Block and Brad Williams of AF&PA, and Professor Chad Oliver at the Global Institute Hoekstra, and Jeff Parrish at The Nature Conservancy; Eric Sanderson, David Wilkie, Amy Vedder, and Karen

477

Protecting Biodiversity: A Guide to Criteria Used by Global Conservation  

E-Print Network [OSTI]

of Ben Wigley of NCASI, Nadine Block and Brad Williams of AF&PA, and Professor Chad Oliver at the Global Unlimited Canada; Jonathan Higgins, Jonathan Hoekstra, and Jeff Parrish at The Nature Conservancy; Eric

479

Barton, M.D. and Johnson, D.A., 2004, Footprints of Fe-oxide(-Cu-Au) systems. SEG 2004: Predictive Mineral Discovery Under Cover. Centre for Global Metallogeny, Spec. Pub. 33, The University of Western Australia, 112-116.  

E-Print Network [OSTI]

Mineral Discovery Under Cover. Centre for Global Metallogeny, Spec. Pub. 33, The University of Western for Mineral Resources, Department of Geosciences University of Arizona, Tucson, AZ 85721-0077 USA barton@geo.arizona.edu Recognizing footprints of Fe-oxide(-Cu-Au) ("IOCG") mineralization depends on the perspective

Barton, Mark D.

480

Role of minerals in the thermal alteration of organic matter. IV. Generation of n-alkanes, acyclic isoprenoids, and alkenes in laboratory experiments  

SciTech Connect (OSTI)

A series of pyrolysis experiments, utilizing two different immature oil-prone kerogens mixed with common sedimentary minerals (calcite, illite, or Na-montmorillonite), was conducted to study the effects of minerals on the generation of n-alkanes, acyclic isoprenoids, and alkenes during laboratory-simulated catagenesis of kerogen. The influence of clay minerals on the aliphatic hydrocarbons is critically dependent on the water concentration during laboratory thermal maturation. Under extremely low contents of water, C/sub 12+/-range n-alkanes and acyclic isoprenoids are mostly destroyed by montmorillonite but undergo only a minor alteration with illite. Both clay minerals significantly reduce alkene formation during dry pyrolysis. Under hydrous conditions (mineral/water = 2:1), the effects of the clay minerals are substantially reduced. In addition, the dry-pyrolysis experiments show that illite and montmorillonite preferentially retain large amounts of the polar constituents of bitumen, but not n-alkanes of acyclic isoprenoids. Therefore, bitumen fractionation according to polarity differences occurs in the presence of these clay minerals. By this process, n-alkanes, and acyclic isoprenoids are concentrated in the bitumen fraction that is not strongly adsorbed on the clay matrices. In contrast, calcite has no significant influence on the thermal evolution of the hydrocarbons. In addition, calcite is incapable of retaining bitumen. Therefore, the fractionation of n-alkanes or acyclic isoprenoids relative to the polar constituents of bitumen is insignificant in the presence of calcite.

Huizinga, B.J.; Tannenbaum, E.; Kaplan, I.R.

1987-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "reid miner ncasi" from the National Library of EnergyBeta (NLEBeta).
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481

ATOMIC-LEVEL MODELING OF CO2 DISPOSAL AS A CARBONATE MINERAL: A SYNERGETIC APPROACH TO OPTIMIZING REACTION PROCESS DESIGN  

SciTech Connect (OSTI)

Fossil fuels, especially coal, can support the energy demands of the world for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Permanent and safe methods for CO{sub 2} capture and disposal/storage need to be developed. Mineralization of stationary-source CO{sub 2} emissions as carbonates can provide such safe capture and long-term sequestration. Mg-rich lamellar hydroxide mineral carbonation is a leading process candidate, which generates the stable naturally occurring mineral magnesite (MgCO{sub 3}) and water. Key to process cost and viability are the carbonation reaction rate and its degree of completion. This process, which involves simultaneous dehydroxylation and carbonation is very promising, but far from optimized. In order to optimize the dehydroxylation/carbonation process, an atomic-level understanding of the mechanisms involved is needed. In this investigation Mg(OH){sub 2} was selected as a model Mg-rich lamellar hydrocide carbonation feedstock material due to its chemical and structural simplicity. Since Mg(OH){sub 2} dehydroxylation is intimately associated with the carbonation process, its mechanisms are also of direct interest in understanding and optimizing the process. The aim of the current innovative concepts project is to develop a specialized advanced computational methodology to complement the ongoing experimental inquiry of the atomic level processes involved in CO{sub 2} mineral sequestration. The ultimate goal is to integrate the insights provided by detailed predictive simulations with the data obtained from optical microscopy, FESEM, ion beam analysis, SIMS, TGA, Raman, XRD, and C and H elemental analysis. The modeling studies are specifically designed to enhance the synergism with, and complement the analysis of, existing mineral-CO{sub 2} reaction process studies being carried out under DOE UCR Grant DE-FG2698-FT40112. Direct contact between the simulations and the experimental measurements is provided by computing, from first principles, the equilibrium structures, elastic, optical, and vibrational properties of Mg(OH){sub 2} (brucite), MgO (periclase), MgCO{sub 3} (magnesite), as well as the energetics of the dehydroxylation reaction (Mg(OH){sub 2} {yields} MgO + H{sub 2}O), and the reactivity of CO{sub 2} with MgO and Mg(OH){sub 2}. From these calculations, thermodynamic characteristics of the reaction conditions can be inferred. This kind of information, when integrated with the atomic level data obtained from experimental gas-solid dehydroxylation/carbonation studies, will be used to design optimized reaction processes leading to the practical and cost-effective sequestration of CO{sub 2} in mineral form.

A.V.G. Chizmeshya; M.J. McKelvy; J.B. Adams

2001-11-01T23:59:59.000Z

482

Carbon Mineralization by Aqueous Precipitation for Beneficial Use of CO2 from Flue Gas  

SciTech Connect (OSTI)

The objective of this project is to demonstrate an innovative process to mineralize CO2 from flue gas directly to reactive carbonates and maximize the value and versatility of its beneficial use products. The program scope includes the design, construction, and testing of a CO2 Conversion to Material Products (CCMP) Pilot Demonstration Plant utilizing CO2 from the flue gas of a power production facility in Moss Landing, CA. This topical report covers Subphase 2a which is the design phase of pilot demonstration subsystems. Materials of construction have been selected and proven in both lab scale and prototype testing to be acceptable for the reagent conditions of interest. The target application for the reactive carbonate material has been selected based upon small-scale feasibility studies and the design of a continuous fiber board production line has been completed. The electrochemical cell architecture and components have been selected based upon both lab scale and prototype testing. The appropriate quality control and diagnostic techniques have been developed and tested along with the required instrumentation and controls. Finally the demonstrate site infrastructure, NEPA categorical exclusion, and permitting is all ready for the construction and installation of the new units and upgrades.

Devenney, Martin; Gilliam, Ryan; Seeker, Randy

2013-08-01T23:59:59.000Z

483

Advanced mineral calciner for regeneration of lime. Final report, March 1995--May 1997  

SciTech Connect (OSTI)

There are approximately 800 pulp, paper and paperboard mills in the United States. Pulp and paper is the ninth largest industry in US, uses 2.8 quads of energy per year and ranks third among all domestic US industries in the cost of energy consumed. A significant fraction of the energy consumed in pulp and paper plants is needed to recover chemicals that are used in breaking down the wood chips into pulp. In particular, 0.1 quads of energy per year are used to regenerate lime. Furthermore, pulp and paper plant operations generate 9,870 tons of NOx per year. Additionally over two million tons of spent lime are sent to landfills each year. In addition, growth in paper demand and changes in plant processes (e.g., bleaching), as a result of environmental pressures, will continue to drive the need for more lime regeneration capacity. Unless the increased capacity can be delivered productively and inexpensively, the growth in pulp and paper may occur in overseas markets. Furthermore, if new environmental constraints cannot be met at low cost, existing US pulp and paper production capacity may also move off-shore. The advanced mineral calciner (AMC) technology was developed to address this lime regeneration need. Prior to describing the technology, and the program of work that was used to test the concept, conventional lime regeneration systems and their limitations are described.

Namazian, M.; Nickeson, R.; Lovas, B.; Miller, G.; Kelly, J.

1997-12-31T23:59:59.000Z

484

Stable-isotope probe of nano-scale mineral-fluid redox interactions  

SciTech Connect (OSTI)

The project examined how stable isotopes fractionate at an aqueous/solid interface during electrochemical reduction reactions. Measurements in a wide variety of metal deposition systems including Fe, Zn, Li, Mo, and Cu, have led to observations of large isotope fractionations which strongly vary as a function of rate and temperature. For the Fe, Zn, and Li systems, our electrochemical deposition methods provide the largest single-pass fractionation factors that are observed for these systems. Based on these and other experiments and theory showing and predicting significant and rate-dependent fractionations of isotopes at reacting interfaces, we have developed a simple statistical mechanics framework that predicts the kinetic isotope effect accompanying phase transformations in condensed systems. In addition, we have begun to extend our studies of mineral-fluid redox interactions to high pressures and temperatures in the diamond anvil cell. We performed a series of experiments to determine solubilities of Cu and Ni at elevated pressure and temperature conditions relevant to ore-formation.

Kavner, Abby

2014-11-26T23:59:59.000Z

485

Reactivity of iron-bearing minerals and CO2 sequestration: A multi-disciplinary experimental approach  

SciTech Connect (OSTI)

The reactivity of sandstones was studied under conditions relevant to the injection of supercritical carbon dioxide in the context of carbon geosequestration. The emphasis of the study was on the reactivity of iron-bearing minerals when exposed to supercritical CO2 (scCO2) and scCO2 with commingled aqueous solutions containing H2S and/or SO2. Flow through and batch experiments were conducted. Results indicate that sandstones, irrespective of their mineralogy, are not reactive when exposed to pure scCO2 or scCO2 with commingled aqueous solutions containing H2S and/or SO2 under conditions simulating the environment near the injection point (flow through experiments). However, sandstones are reactive under conditions simulating the edge of the injected CO2 plume or ahead of the plume (batch experiments). Sandstones containing hematite (red sandstone) are particularly reactive. The composition of the reaction products is strongly dependent on the composition of the aqueous phase. The presence of dissolved sulfide leads to the conversion of hematite into pyrite and siderite. The relative amount of the pyrite and siderite is influenced by the ionic strength of the solution. Little reactivity is observed when sulfite is present in the aqueous phase. Sandstones without hematite (grey sandstones) show little reactivity regardless of the solution composition.

Schoonen, Martin A. [Stony Brook University] (ORCID:0000000271331160)

2014-12-22T23:59:59.000Z

486

Application of Radial Basis Functional Link Networks to Exploration for Proterozoic Mineral Deposits in Central Iran  

SciTech Connect (OSTI)

The metallogeny of Central Iran is characterized mainly by the presence of several iron, apatite, and uranium deposits of Proterozoic age. Radial Basis Function Link Networks (RBFLN) were used as a data-driven method for GIS-based predictive mapping of Proterozoic mineralization in this area. To generate the input data for RBFLN, the evidential maps comprising stratigraphic, structural, geophysical, and geochemical data were used. Fifty-eight deposits and 58 'nondeposits' were used to train the network. The operations for the application of neural networks employed in this study involve both multiclass and binary representation of evidential maps. Running RBFLN on different input data showed that an increase in the number of evidential maps and classes leads to a larger classification sum of squared error (SSE). As a whole, an increase in the number of iterations resulted in the improvement of training SSE. The results of applying RBFLN showed that a successful classification depends on the existence of spatially well distributed deposits and nondeposits throughout the study area.

Behnia, Pouran [Geological Survey of Iran, Geomatics Department (Iran, Islamic Republic of)], E-mail: pouranb@yahoo.com

2007-06-15T23:59:59.000Z

487

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing  

SciTech Connect (OSTI)

Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, novel surface treatment technologies, High Density Infrared (HDI) and Laser Surface Engineering (LSE) surface coating processes were developed for the surface enhancement of selected mineral processing equipment. Microstructural and mechanical properties of the coated specimens were characterized. Laboratory-simulated wear tests were conducted to evaluate the tribological performance of the coated components. Test results indicate that the wear resistance of ASTM A36 (raw coal screen section) and can be significantly increased by applying HDI and LSE coating processes. Field testing has been performed using a LSE-treated screen panel and it showed a 2 times improvement of the service life.

Daniel Tao; Craig A. Blue

2006-07-20T23:59:59.000Z

488

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing  

SciTech Connect (OSTI)

Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, novel surface treatment technologies, High Density Infrared (HDI) and Laser Surface Engineering (LSE) surface coating processes were developed for the surface enhancement of selected mineral and coal processing equipment. Microstructural and mechanical properties of the coated specimens were characterized. Laboratory-simulated wear tests were conducted to evaluate the tribological performance of the coated components. Test results indicate that the wear resistance of ASTM A36 (raw coal screen section) and can be significantly increased by applying HDI and LSE coating processes. Field testing has been performed using a LSE-treated screen panel and it showed a significant improvement of the service life.

Daniel Tao; R. Honaker; B. K. Parekh

2007-09-20T23:59:59.000Z

489

Plant oils and mineral oils: effects as insecticide additives and direct toxicity to Heliothis virescens (F.) and Musca domestica L.  

E-Print Network [OSTI]

(Ware et al. 1975, 1978, 1980, Bigley et al. 1981). In his analysis of the effects of toxaphene, camphene and cottonseed oil, Bigley et al. (1981) indicated that a number of nontoxic vegetable oils were as effective as toxaphene in increasing...PLANT OILS AND MINERAL OILS: EFFECTS AS INSECTICIDE ADDITIVES AND DIRECT TOXICITY TO HELIOTHIS VIRESCENS (F. ) AND MUSCA DOMESTICA L. A Thesis by GERMAIN OCHOU OCHOU Submitted to the Graduate College of Texas A&M University in partial...

Ochou, Germain Ochou

1985-01-01T23:59:59.000Z

490

Association of coal metamorphism and hydrothermal mineralization in Rough Creek fault zone and Fluorspar District, Western Kentucky  

SciTech Connect (OSTI)

The ambient coal rank (metamorphism) of the Carboniferous coals in the Western Kentucky coalfield ranges from high volatile A bituminous (vitrinite maximum reflectance up to 0.75% R/sub max/) in the Webster syncline (Webster and southern Union Counties) to high volatile C bituminous (0.45 to 0.60% R/sub max/) over most of the remainder of the area. Anomalous patterns of metamorphism, however, have been noted in coals recovered from cores and mines in fault blocks of the Rough Creek fault zone and Fluorspar District. Coals in Gil-30 borehole (Rough Creek faults, Bordley Quadrangle, Union County) vary with no regard for vertical position, from high volatile C(0.55% R/sub max/) to high volatile A (0.89%R/sub max) bituminous. Examination of the upper Sturgis Formation (Missourian/Virgilian) coals revealed that the higher rank (generally above 0.75% R/sub max/) coals had vein mineral assemblages of sphalerite, twinned calcite, and ferroan dolomite. Lower rank coals had only untwinned calcite. Several sites in Webster County contain various coals (Well (No. 8) to Coiltwon (No. 14)) with vitrinite reflectances up to 0.83% R/sub max/ and associated sphalerite mineralization. Mississippian and Lower Pennsylvanian (Caseyville Formation Gentry coal) coals in the mineralized Fluorspar District have ranks to nearly medium volatile bituminous (1.03% R/sub max/). The regional rank trend exhibited by the fualt zones is generally higher rank than the surrounding areas. Sphalerite mineralization in itself is not unique within Illinois basin coals, but if it was partly responsible for the metamorphism of these coals, then the fluid temperature must have been higher within the above mentioned fault complexes.

Hower, J.C.; Fiene, F.L.; Trinkle, E.J.

1983-09-01T23:59:59.000Z

491

Dissolution of Uranium-Bearing Minerals and Mobilization of Uranium by Organic Ligands in a Biologically Reduced Sediment  

SciTech Connect (OSTI)

The stability and mobility of uranium (U) is a concern following its reductive precipitation or immobilization by techniques such as bioremediation at contaminated sites. In this study, the influences of complexing organic ligands such as citrate and ethylenediaminetetraacetate (EDTA) on the mobilization of U were investigated in both batch and column flow systems using a contaminated and bioreduced sediment. Results indicate that both reduced U(IV) and oxidized U(VI) in the sediment can be effectively mobilized with the addition of EDTA or citrate under anaerobic conditions. The dissolution and mobilization of U appear to be correlated to the dissolution of iron (Fe)- or aluminum (Al)-bearing minerals, with EDTA being more effective (with R2 0.89) than citrate (R2 <0.60) in dissolving these minerals. The column flow experiments confirm that U, Fe, and Al can be mobilized by these ligands under anoxic conditions, although the cumulative amounts of U removal constituted ~0.1% of total U present in this sediment following a limited period of leaching. This study concludes that the presence of complexing organic ligands may pose a long-term concern by slowly dissolving U-bearing minerals and mobilizing U even under a strict anaerobic environment.

Luo, Wensui [ORNL; Gu, Baohua [ORNL

2011-01-01T23:59:59.000Z

492

Resource characterization for uranium mineralization in the Montrose 1/sup 0/ x 2/sup 0/ quadrangle, Colorado  

SciTech Connect (OSTI)

A data-classification scheme was developed to detect potential uranium mineralization in the Montrose 1/sup 0/ x 2/sup 0/ quadrangle, Colorado. The methodology developed is a rapid and efficient method of resource evaluation on a reconnaissance scale. The necessary techniques were developed and refined to digitize, integrate, and register various large geological, geochemical, and geophysical data sets for the Montrose quadrangle, Colorado, using a grid resolution of 1 km. All data sets for the Montrose quadrangle were registered to the Universal Transverse Mercator projection. The data sets include hydrogeochemical and stream sediment analyses for 23 elements, uranium-to-thorium ratios, airborne geophysical survey data, the locations of 90 uranium occurrences, and a geologic map (scale 1:250 000). Geochemical samples were collected from 3965 locations in the 19 200 km/sup 2/ quadrangle; aerial data were collected on flight lines flown with 3 to 5 km spacings. These data sets were smoothed by universal kriging and interpolated to a 179 x 119 rectangular grid (each grid block is 1 km/sup 2/). A mylar transparency of the geologic map was prepared and digitized. All possible combinations of three, for all data sets, were examined for general geologic correlations by utilizing a color microfilm output. Subsets of data were further examined for selected test areas. A classification scheme for uranium mineralization, based on selected test areas in the Cochetopa uranium district, is presented. Areas favorable for uranium mineralization, based on this scheme, were identified and are discussed.

Bolivar, S.L.; Balog, S.H.; Weaver, T.A.

1981-01-01T23:59:59.000Z

493

Values of Mineral Modulus of Clay Manika Prasad, Ronny Hofmann, Mike Batzle, Colorado School of Mines; M. Kopycinska-Mller, U. Rabe, and  

E-Print Network [OSTI]

of the atomic force microscope (AFM) technique and its principles are described in details elsewhere (Rabe et associated with elastic properties measurements of clay minerals with standard pulse transmission techniques

494

PII S0016-7037(98)00136-7 The kinetics of mixed Ni-Al hydroxide formation on clay and aluminum oxide minerals  

E-Print Network [OSTI]

PII S0016-7037(98)00136-7 The kinetics of mixed Ni-Al hydroxide formation on clay and aluminum. This finding indicates that the dissolution of clay and aluminum oxide minerals can be promoted by metal ions

Sparks, Donald L.

495

UK Oil and Gas Collaborative Doctoral Training Centre (2015 start) Project Title: Authigenic mineral corrosion and the origins of secondary porosity in lacustrine  

E-Print Network [OSTI]

UK Oil and Gas Collaborative Doctoral Training Centre (2015 start) Project Title: Authigenic mineral corrosion and the origins of secondary porosity in lacustrine carbonate reservoirs). Additionally, the project will assess late diagenetic corrosion by examining the pathways triggered by shallow

Henderson, Gideon

496

Rules and Regulations Governing Leasing for Production or Extraction of Oil, Gas and Other Minerals From Onshore State-Owned Lands (Mississippi)  

Broader source: Energy.gov [DOE]

The Rules and Regulations Governing Leasing for Production or Extraction of Oil, Gas and Other Minerals From Onshore State-Owned Lands is applicable to the natural gas sector. This law delegates...

497

ATOMIC-LEVEL IMAGING OF CO2 DISPOSAL AS A CARBONATE MINERAL: OPTIMIZING REACTION PROCESS DESIGN  

SciTech Connect (OSTI)

Fossil fuels, especially coal, can support the energy demands of the world for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Permanent and safe methods for CO{sub 2} capture and disposal/storage need to be developed. Mineralization of stationary-source CO{sub 2} emissions as carbonates can provide such safe capture and long-term sequestration. Mg(OH){sub 2} carbonation is a leading process candidate, which generates the stable naturally occurring mineral magnesite (MgCO{sub 3}) and water. Key to process cost and viability are the carbonation reaction rate and its degree of completion. This process, which involves simultaneous dehydroxylation and carbonation is very promising, but far from optimized. In order to optimize the dehydroxylation/carbonation process, an atomic-level understanding of the mechanisms involved is needed. Since Mg(OH){sub 2} dehydroxylation is intimately associated with the carbonation process, its mechanisms are also of direct interest in understanding and optimizing the process. In the first project year, our investigations have focused on developing an atomic-level understanding of the dehydroxylation/carbonation reaction mechanisms that govern the overall carbonation reaction process in well crystallized material. In years two and three, we will also explore the roles of crystalline defects and impurities. Environmental-cell, dynamic high-resolution transmission electron microscopy has been used to directly observe the dehydroxylation process at the atomic-level for the first time. These observations were combined with advanced computational modeling studies to better elucidate the atomic-level process. These studies were combined with direct carbonation studies to better elucidate dehydroxylation/carbonation reaction mechanisms. Dehydroxylation follows a lamellar nucleation and growth process involving oxide layer formation. These layers form lamellar oxyhydroxide regions, which can grow both parallel and perpendicular to the Mg(OH){sub 2} lamella. The number of oxide layers within the regions increases as they grow during dehydroxylation. Selected area diffraction suggests a novel two-dimensional variant of Vegard's law can describe the oxyhydroxide regions, with intralamellar Mg-Mg packing distances observed between those known for Mg(OH){sub 2} and MgO. Intralamellar and interlamellar elastic stress induced during dehydroxylation can contribute to crystallite cracking and MgO surface reconstruction, which may serve to enhance carbonation reactivity. The observed dehydroxylation process indicates a range of candidate materials for carbonation may be present during the carbonation process (i) the hydroxide, (ii) a range of intermediate oxyhydroxides, and (iii) the oxide, potentially in more-reactive, very small particle size form. Partial carbonation of single-crystal Mg(OH){sub 2} fragments over a wide range of reaction conditions (varying CO{sub 2} pressure and temperature) shows a linear or near-linear correlation between carbonation and dehydroxylation, with the extent of dehydroxylation substantially greater than the extent of carbonation. This suggests carbonation primarily occurs via intermediate oxyhydroxide or oxide formation. The range and type of intermediate oxyhydroxides/oxides that can form in advance of carbonation should provide a degree of control over both their formation and the overall reactivity observed for the carbonation process.

M.J. McKelvy; R. Sharma; A.V.G. Chizmeshya; H. Bearat; R.W. Carpenter; K. Streib

1999-09-01T23:59:59.000Z

498

Carbon Mineralization by Aqueous Precipitation for Beneficial Use of CO2 from Flue Gas  

SciTech Connect (OSTI)

Calera's innovative Mineralization via Aqueous Precipitation (MAP) technology for the capture and conversion of CO{sub 2} to useful materials for use in the built environment was further developed and proven in the Phase 1 Department of Energy Grant. The process was scaled to 300 gallon batch reactors and subsequently to Pilot Plant scale for the continuous production of product with the production of reactive calcium carbonate material that was evaluated as a supplementary cementitious material (SCM). The Calera SCM{trademark} was evaluated as a 20% replacement for ordinary portland cement and demonstrated to meet the industry specification ASTM 1157 which is a standard performance specification for hydraulic cement. The performance of the 20% replacement material was comparable to the 100% ordinary portland cement control in terms of compressive strength and workability as measured by a variety of ASTM standard tests. In addition to the performance metrics, detailed characterization of the Calera SCM was performed using advanced analytical techniques to better understand the material interaction with the phases of ordinary portland cement. X-ray synchrotron diffraction studies at the Advanced Photon Source in Argonne National Lab confirmed the presence of an amorphous phase(s) in addition to the crystalline calcium carbonate phases in the reactive carbonate material. The presence of carboaluminate phases as a result of the interaction of the reactive carbonate materials with ordinary portland cement was also confirmed. A Life Cycle Assessment was completed for several cases based on different Calera process configurations and compared against the life cycle of ordinary portland cement. In addition to the materials development efforts, the Calera technology for the production of product using an innovative building materials demonstration plant was developed beyond conceptual engineering to a detailed design with a construction schedule and cost estimate.

Brent Constantz; Randy Seeker; Martin Devenney

2010-06-30T23:59:59.000Z

499

Identification of Fragile Microscopic Structures during Mineral Transformations in Wet Supercritical CO2  

SciTech Connect (OSTI)

In this study we examine the nature of highly fragile reaction products that form in low water content super critical carbon dioxide (scCO2) using a combination of scanning electron microscopy/focus ion beam (SEM/FIB), confocal Raman spectroscopy, helium ion microscopy (HeIM), and transmission electron microscopy (TEM). HeIM images show these precipitates to be fragile rosettes that can readily decompose even under slight heating from an electron beam. Using the TEM revealed details on the interfacial structure between the newly formed surface precipitates and the underlying initial solid phases. The detailed microscopic analysis revealed that the growth of the precipitates either followed a tip growth mechanism with precipitates forming directly on the forsterite surface if the initial solid was non-porous (natural forsterite) or growth from the surface of the precipitates where fluid was conducted through the porous (nanoforsterite) agglomerates to the growth center. The mechanism of formation of the hydrated/hydroxylated magnesium carbonate compound (HHMC) phases offers insight into the possible mechanisms of carbonate mineral formation from scCO2 solutions which has recently received a great deal of attention as the result of the potential for CO2 to act as an atmospheric greenhouse gas and impact overall global warming. The techniques used here to examine these fragile structures an also be used to examine a wide range of fragile material surfaces. SEM and FIB technologies have now been brought together in a single instrument, which represents a powerful combination for the studies in biological, geological and materials science.

Arey, Bruce W.; Kovarik, Libor; Qafoku, Odeta; Wang, Zheming; Hess, Nancy J.; Felmy, Andrew R.

2013-04-01T23:59:59.000Z

500

Mineral interactions and absorption in the equine digestive tract: calcium, phosphorus, and magnesium interaction with aluminum, and calcium digestibility of alfalfa in ponies  

E-Print Network [OSTI]

MINERAL INTERACTIONS AND ABSORPTION IN THE EQUINE DIGESTIVE TRACT: CALCIUM, PHOSPHORUS, AND MAGNESIUM INTERACTION WITH ALUMINUM, AND CALCIUM DIGESTIBILITY OF ALFALFA IN PONIES A Thesis by LINDA J. KAPUSN IAK Subnitted to the Graduate College.... Smith (Head of Deportment) August 1987 ABSTRACT Mineral Interactions and Absorption in the Equine Digestive Tract: Calcium, Phosphorus, and Magnesium Interaction with Aluminum, and Calcium Digestibility of Alfalfa in Ponies, (August 1987) Linda J...

Kapusniak, Linda J.

1987-01-01T23:59:59.000Z