Sample records for fine sandy loam

  1. Comparison of lines of corn selected on Lufkin fine sandy loam and Norwood silt loam with and without commercial fertilizer

    E-Print Network [OSTI]

    McAfee, Thomas Edison

    1953-01-01T23:59:59.000Z

    COMPARISON OF LINES OF CORN SELE CTED ON LUFKIN FINE SANDY LOAM AND NORWOOD SILT LOAM WITH AND WITHOUT COMMERCIAL FERTILIZER A Dissertation By Thomas Edison MoAfee Approved as to style and content by: Chairman of Committee Heac...Kor Department May, 1953 COMPARISON OF LINES OF CORN SELECTED ON LUFKIN FINE SANDY LOAM AND NORWOOD SILT LOAM WITH AND WITHOUT COMMERCIAL FERTILIZER By Thomas Edison McAfee 111 A Dissertation Submitted to the Graduate School of the Agricultural...

  2. Response of corn to fertilizer placement on a Hockley fine sandy loam

    E-Print Network [OSTI]

    Matocha, John Edward

    1964-01-01T23:59:59.000Z

    nf tbs rov, afte" plan? ng or wa- m:x sr] w i!I-. ;I& e soi! before pl i "ti g +& -, n ?vitt a" y o'I e, methorl of p'. i emsn'. Flu sev . r. & . d; d iiot i. ' iud tr et'men w li =h invo! vs 1 tl . -. u!a. . emunt of fer'i!i. er wit! the seed Gut.... . ' a& tl-. e s &ine . lo& ation ea h yea . Th = & &pe" m' n. & irs des&gned as a comp' . !e! y ra ndom? d bio -. u. i'h a. ? x t x g factor ial arrangement ?&ill- four add&& ona! &re &'met? a&id a. & h. ctt, The ? 1 tr a'm-n&, iv . ri. rep&&cat ed...

  3. A Chemical and Microbiological Study of Lufkin Fine Sandy Loam in Relation to Productiveness.

    E-Print Network [OSTI]

    Reynolds, E. B. (Elbert Brunner)

    1931-01-01T23:59:59.000Z

    and significantly correlated with the yields of cotton and corn. The nitrifying capacity of the soil was a better index of the crop-producing power of the soil than the total nitrogen, the total phosphoric acid, or the active phos- phoric acid of the soil.... The addition of nitrogenous materials, cottonseed meal and manure, and of phosphoric acid, as superphosphate and ground rock phosphate, stimulated the nitrifying power of the soil and increased the production of nitrates in field soil. Under conditions...

  4. An economic evaluation of fertilizer application to Coastal Bermudagrass under irrigation on Lufkin fine sandy loam

    E-Print Network [OSTI]

    Prochaska, Frank Charles

    1958-01-01T23:59:59.000Z

    iie:@aevi. ". ": @~i=, - -. ?, ~ '8. , ~4PQX C~~ O~~ OVM. 4~$4' /@0~4+-:~X4- -, :. '~ AM:. ty-'-~X@~ a em&Le i''a4 j:. eixginp:-%ham ~j, & -~, -. =-. ':-. . . -' k~+? earn g~m Mm' X4@4te4-cay~~+ -Al~~'. '- W4~ . ~N Bq&. ~ &veet@4, & 2'ex 4 g... wea ma@ w 4@~~ ecIxc'xMoua co -the yxe@3~. , 455~'. -k' ix58pMx' 48: 9x@X'Cate@'v~ cl%+egea g&cSQ. a eel? e~-~- ~ -~. ~~-~ 9;xx -~ et&xi', - ~ x"e, 1 'aulte. , e~~'. vw% ~gae4 i~'-4 4'~~-:@k:. ~~~W@6la . ', : . vcLs t ka ex. ? . ". . ;: . . c at...

  5. The effect of irrigated cropping systems on certain soil physical properties of Willacy fine sandy loam

    E-Print Network [OSTI]

    Khan, Shiraj Hossain

    1958-01-01T23:59:59.000Z

    By SHIRAJ HOSSAIH KHAH Approved a to style and content by: g. Cha n of Cosssittee H of the Depa ent of Agronoay / August 1958 Thanks are due to Dr. M. E. Bloodworth, Associate Professor, and Dr. H. H. Hampton, Professor of Agronomy, of the A. 6 M... percolatioa rate of water in centineters per hour in 0-6, 6-12, and 12-18 inch saturated field cores as influenced by different cropping systens . . . . . . . . . . . . . . , ~ . 22 4. Average bulk density of field cores under different cropping systens...

  6. A Chemical and Microbiological Study of Lufkin Fine Sandy Loam in Relation to Productiveness. 

    E-Print Network [OSTI]

    Reynolds, E. B. (Elbert Brunner)

    1931-01-01T23:59:59.000Z

    . The addition of nitrogenous materials, cottonseed meal and manure, and of phosphoric acid, as superphosphate and ground rock phosphate, stimulated the nitrifying power of the soil and increased the production of nitrates in field soil. Under conditions... in the laboratory the addition of lime increased the . power of the soil to produce nitrates, although this increased nitrifying power was not more significantly correlated with the yields of cotton and corn than was the nitrifying power of the soil without lime...

  7. Availability of the Phosphoric Acid of Finely-Divided Rock Phosphate.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1935-01-01T23:59:59.000Z

    -poor drainage, grayish brown clay, taken from 2 mi. E. of Lea by. 32650. Lake Charles Clay, 7 to 19 inches deep, Galveston County, d ayish black clay, from 2 mi. E. of League City. 33125. Moscow fine sandy loam, 3 to 7 inches, Polk County, a g imy fine sand... with numerous dark brown to black soft concretic ken 6 mi. W. of Corrigan, near the Groveton Road. 33126. Crockett Clay Loam, 0 to 7 inches, Polk County, surface ot cultivated) a dark brownish gray heavy fine sandy loam to li ~y loam, taken 2% mi. E. of Rock...

  8. Formation of a sandy near-bed transport layer from a fine-grained bed under oscillatory flow

    E-Print Network [OSTI]

    Formation of a sandy near-bed transport layer from a fine-grained bed under oscillatory flow to be an important effect for the formation of ripples and the dynamics of the boundary layer above a predominantly), Formation of a sandy near-bed transport layer from a fine-grained bed under oscillatory flow, J. Geophys

  9. Base-Exchange Properties of Some Typical Texas Soils.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Fudge, J. F. (Joseph Franklin)

    1935-01-01T23:59:59.000Z

    31321 25905 29434 31833 29426 29438 29425 29365 26089 25967 25959 25869 26823 total exchange capacity Total exchange capacity Comparison of three Soil type Crockett fine sandy loam.. Amarillo fine sandy loam. .. Webb fine sandy loam.... .... Amarillo fine sandy loam. .. Yahola fine sandy loam. ... Willacy fine sandy loam.. .. Lomalto clay loam.. ...... Hidalgo clay loam. ........ Raymondville fine sandy loam.. ................. Victoria clay loam.. ...... Wilson clay...

  10. Effect of winter annual legumes on certain chemical properties of Lufkin fine sandy loam and on the yield of cotton

    E-Print Network [OSTI]

    Dula? Navarrete, Jose?

    1955-01-01T23:59:59.000Z

    . Total nitrogen was determined by the Kjeldhal method as modlf'led by Prince (28). The r esults were expressed as a percentage of nitrogen in air-dry soil. Harper's phenoldlsulf'onlc acid metnod (13) was used for determining the nitrate nitrogen... of nitrogen equiva- lent to that in 313 pounds of nitrate of soda. Three weeks later, vetch tops contained as much nitrogen per acr e as 853 pounds of sodium nitrate, an almost three-fold increase. n/ Lyon (19) stated that ni trogen content of a soil...

  11. Growing Potatoes Soil Potatoes are adapted to a wide range of soil types, though a deep, well-drained sandy loam is ideal.

    E-Print Network [OSTI]

    New Hampshire, University of

    Growing Potatoes Soil Potatoes are adapted to a wide range of soil types, though a deep, well to plant earlier. If irrigation is available, sandy soil will produce a good potato crop. Poorly drained contribute to tuber rot. Grow potatoes in soils with a pH of 5.2 to 5.5 to prevent potato scab. If the level

  12. The Composition of the Soils of South Texas.

    E-Print Network [OSTI]

    Fraps, G. S.

    1913-01-01T23:59:59.000Z

    .................................................................................................................................. IIDescription of Soil Types..................................................................................................... I3Beeville Fine Sandy Loam.......................................................................................... ISBlanco S ilt... Loam............................................................................................................. 13Brennan Fine Sandy Loam.......................................................................................... ISDuval Fine. Sandy...

  13. Nitrification Capacities of Texas Soil Types and Factors which Affect Nitrification.

    E-Print Network [OSTI]

    Sterges, A. J.; Fraps, G S. (George Stronach)

    1947-01-01T23:59:59.000Z

    .p.m. Gulf Coast Prairie Upland soils Lake Charles clay loam. ............... .......... Lake Charles fine sandy loam. Lake Charles clay.. ................... Edna fine sandy loam.. ................ ............. Hockley fine sandy loam.. Alluvial... soils Miller fine sandy loam.. ............... Miller clay.. ......................... Ochlockonee silt loam.. ............... ......... Ochlockonee fine sandy loam.. Trinity clay.. ......................... pahala clay...

  14. The effects of varied rates and ratios of fertilizer on forage yields and tillering of Austin wheat on Lufkin fine sandy loam and Miller clay soils

    E-Print Network [OSTI]

    Coffey, Lee Clayton

    1950-01-01T23:59:59.000Z

    of hgroncmy, uho read the thesis and offered valuable suggestions and constructive criticisms 0C5TENTS Introduction . I. Review of Literature . 2 II. Materials and Methods . . . . . . . . . . . . . . . 7 III. Experimental Results... level (Table 8) ~ The cmmcn yield per aors of forage produoed by tbe ~ ~wend rectos sas 753 snd 588 ponndsx respeotively The moan differenoex 165 pcnmds~ eas highly signifioant The ~xnxnd rate bsd oeased to have as snob effest as in ths pxevions...

  15. Rice… A Big Business on the Gulf Coast Prairie.

    E-Print Network [OSTI]

    Hodges, R. J. Jr.

    1957-01-01T23:59:59.000Z

    Acid -.------------.-----.---------.-----..-------.-- Potash ..-.-_- - .----------------- ------- -- -- ... ------..----------------- Minor Elernents ........................ --------.-------.-.--.-- Fertilizer Recommendations Beaumont Clay...-- -. --- ----- --- ---- - - ----- -- --- - --- - - -- ---- -- --- - . Lake Charles Clay .---..------.------------------------------- Bernard Clay Loam 7 Katy Fine Sandy Loam .---..---.- --------...-............ i Hockley Fine Sandy Loam .....---; ----..-.... 7 Edna Fine Sc~,vdy Loam...

  16. The Composition of the Soils of Archer, Franklin and Harrision Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1919-01-01T23:59:59.000Z

    .................................... Soils of Harrison County 13 ....................................... Soil series in the areas 16 Bastrop loam .......................................... 17 ............................. . Bastrop very fine sandy loam 18 Caddo fine sandy loam... .................................. 18 Greenburg clay .......................................... 20 ...................................... Greenburg clay loa111 21 Greenburg loam ........................................ 22 Houston clay ...-...................................... 23...

  17. The Active Potash of the Soil and Its Relation to Pot Experiments.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1912-01-01T23:59:59.000Z

    --------------------- Norfolk sand --------------------- Susquehana fine sandy loam------ Norfolk fine sand -----------------. Lufkin sand, subsoil ------------, Lufkin sand, subsoil ------------- Lufkin sand, subsoil ------------- Lufkin sand, subsoil... sand ----------------- Norfolk fine sand --,-------------- Norfolk fine sand --------- - ------- Norfclk Ane sandy loam ---------- Norfolk fine sandy loam --------- Norfolk fine sandy loam ---------- Lufkin flne sand ------------------ Lufkin...

  18. Chloride and Lithium Transport in Large Arrays of Undisturbed Silt Loam and Sandy Loam Soil Columns

    E-Print Network [OSTI]

    Walter, M.Todd

    -The transport of Cl and Li was investigated in 90 undisturbed ing of trace metals from an old sludge application through preferential flowpaths. variety of sewage sludges (biosolids) at agronomic rates. With soil;of deionized water and multiple subsequent irrigations with synthetic Yasuda et al., 1996; Jorgenson

  19. Editor's Note: Hurricane Sandy,

    E-Print Network [OSTI]

    Rosen, Jay

    Editor's Note: Hurricane Sandy, also known as Super Storm Sandy, Tropi- cal Storm Sandy, or just to protect the public, vital infrastructure, and the environment. Hurricane Sandy When Joseph Bruno, New York- nuity that the city demonstrated in the wake of Hurricane Sandy. So when he addressed a forum at New

  20. Unsaturated conductivity and diffusivity of selected Texas soils in relation to their physical and chemical properties

    E-Print Network [OSTI]

    Derendinger, George Lewis

    1968-01-01T23:59:59.000Z

    -step method Diffusivity as a function of soil water suc- tion for Austin clay, Wilson silt loam, and Lakeland sand . . . . . . . . . . . . . . . 30 Diffusivity as a function oi' volumetric water content for Austin clay, Wilson silt loam, aind Lakeland... sand . . . . . . . . . . . . . 31 Diffusivity as a function of soil water suc- tion for Lakeland sand, Luzkin fine sandy loam (Brazos Co. ), Lufkin fine sandy loam (Fayette Co. ), Crockett fine sandy loam, and Lufkin silt loam 'kl Diffusivity as a...

  1. The Chemical Composition of Some Soils of Angelina, Brazoria, Cameron, Cherokee, Delta, Lamar, Hidalgo, Lavaca, Montgomery, Nacogdoches, Robertson, Rusk, Webb and Wilson Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1909-01-01T23:59:59.000Z

    . They are found mostly in the coastal plains and are especially abundant irl East Texas. These soils are better suited to fruit and truck than to corn arltl cotton. TABLE 3-AVERAGE PERCENTAGE COMPOSITION TYPICAL SOILS -p - Norfolk fine sandy loam (5 samples...) ...... / .021 .06 09 . .081' .03 Norfolk fine sand (5 samples) ............ .02 .021 : 081 .061 .06 Susquehanna fine sandy loam (3 samples. . Lufkin fine sandy loam (3 samples). ...... Lufkin clay (2 samples ................... Orangeburg fine sandy loam (6...

  2. Responds to Hurricane Sandy

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    US Army Corps of Engineers

    Army Corps Responds to Hurricane Sandy January Edition 2013 U.S. Army Corps of Engineers, New York 1 Table of Contents Page 2 Commander's Reflections Page 3 Hurricane Sandy batters NY District's AOR Contingency Plan into action for first time on Long Island Page 14 Corps personnel assist Hurricane Sandy

  3. Nutritive value of eastern little bluestem and sweetgum as influenced by canopy condition and soil

    E-Print Network [OSTI]

    Howell, Joe Wynn

    1981-01-01T23:59:59.000Z

    ?'* ) ' ~ . ~d' ) ) d () (~L' 'd ) ~(f ) ) ' () d )y ) (QX) d ) d ( 70() canopy cover condition and four major soil series: Tenaha loamy fine sand, Cuthbert fine sandy loam, Woodtell very fine sandy loam, and Lacerda clay loam found in the National Forest..., Lufkin, Texas. . . . . . . . . . . . 17 Mean soil moisture (%), on a dry weight basis, of the top 30. 5 cm of a Tanaha loamy fine sand (l. f. s. ), Cuthbert fine sandy loam (f. s. l. ), Woodtell very fine sandy loam (v. f. s. l. ), and Lacerda clay...

  4. Global Warming Systemically Caused Hurricane Sandy

    E-Print Network [OSTI]

    Lakoff, George

    2012-01-01T23:59:59.000Z

    Warming Systemically Caused Hurricane Sandy by George Lakoffsystemically caused Hurricane Sandy -- and the Midwestenormous energy and size of Hurricane Sandy, as well as the

  5. Hurricane Sandy 2012 EMERGENCY PREPAREDNESS

    E-Print Network [OSTI]

    Hanson, Stephen José

    Hurricane Sandy 2012 EMERGENCY PREPAREDNESS TASK FORCE REPORT #12;Publication Date: March 2013 EMERGENCY PREPAREDNESS TASK FORCE REPORT HURRICANE SANDY 2012 This report was prepared at the direction to directions received from you to investigate and report on the devastating impacts Hurricane Sandy had

  6. Soils of Bell, Jefferson, Smith, Taylor and Webb Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1922-01-01T23:59:59.000Z

    with acid-soluble potash, all except Wilson clay loam being good in potash. All the soils are high in lime except Miles fine sandy loam and Wilson clay loam. None? of the soils are acid. The soils are limestone in character, and many of them are quite... ...... .. .. . . . . . .... . ........ . ... . Su bsoil. .. . . Frio loam . .. . . Subsoil. .. . .... . Frio silty clay loam .. Subsoil. .... . . . H ouston black clay. Subsoil. . . . H oust on clay . .. . Subsoil. .... .. . .. . M iles fin e sandy loam .. Su bsoil. . . .. . .. . . San...

  7. Keys to Profitable Texas Sweet Potato Production, Storage and Marketing.

    E-Print Network [OSTI]

    Roberts, Roland E.; Longbrake, Thomas D.; Cotner, Sam; Menges, Terry; McCraw, B. Dean; Paterson, Donald R.

    1979-01-01T23:59:59.000Z

    consumption. Site Selection and Soil Management A sandy loam, fine sandy loam or loamy fine sand, at least 18 to 24 inches deep, underlaid by a clay loam or sandy clay loam is best suited for sweet potato production. Sandy soils produce smooth skinned... roots of desirable shape. Clay loams and silt loams are un suitable. Use crop rotations which allow at least 3 years before sweet potatoes are planted again on the same land. Some growers are now coming back every other year using land where winter...

  8. Relations of Buffer Capacity for Acids to Basicity and Exchangeable Bases of the Soil.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Fudge, J. F.

    1932-01-01T23:59:59.000Z

    -(continued). ...................... i Point Isabel fine sandy loam Laboratory Number ......................................... / Potter clay loam ( Carbonates as Calcium Total buffer capacity Soil type 4.0 6.0 / P0;.8H 1 por pH j Catalpa clay... ....................................................... / I Miller clay loam ............................................... Frio silt loam .................................................. Hidalgo clay loam ........................................... I I I I I...

  9. Physical, chemical and mineralogical properties of some soils of the Welder Wildlife Foundation

    E-Print Network [OSTI]

    Kovar, John Alvis

    1963-01-01T23:59:59.000Z

    . ed land Le+alta Niguel 75 TABLE OF CONTENTS (Cont. ) Nueces Tiooano Trlntty Villaoy Zavala 4 0 4 Page Page Physical properti. es of Medio loamy fine sand, Orelia fine sandy loam, and Victoria clay Chemical properties of Medio loamy fine... sand, Orelia f'ine sandy loamiand Victoria clay Exchangeable, extractable& and saturation extract, soluble cations of Medio loamy f'ine sand, Orelia fine sandy loam and Victoria clay Mineralogical properties of Medio loamy fine send~ Orelia fine...

  10. Possibilities of Sulphur as a Soil Amendment.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1930-01-01T23:59:59.000Z

    and being sometimes mistaken for gold, ,are called "fool's gold." The pyrite deposits in Texas are usually too small to be of commercial value. Gypsum. Gypsum (82, 83) is a hydrous calcium sulphate, occurring abundantly in many parts of Texas in various... subsoil ............................. Acadia clay loam ............................... Acadia clay loam subsoil ....................... Acadia clay loam subsoil ....................... Orangeburg fine sandy loam .................... Orangeburg fine...

  11. The Chemical Composition of Some Texas Soils.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1907-01-01T23:59:59.000Z

    tne usquehanna clay appear to contain sufficient potash. The Lufkin and Sus- uehanna soils are low in lime. All the soils tested by pot experiments respond to phosphoric acid--the Norfolk fine sand, Norfolk fine sandy loam, Orangeburg fine sandy... loam, quehanna fine sandy loam and Lufkin fine sand. Only the Norfolk fine sa loam responds to potash. Anderson county. The six soils examined belong to the Norfolk, Ora lrg and Yazoo series. All were low in phosphoric acid, and all except azoo...

  12. North Atlantic DivisionNorth Atlantic Division SuperstormSuperstorm SandySandy

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    US Army Corps of Engineers

    North Atlantic DivisionNorth Atlantic Division SuperstormSuperstorm SandySandy Dredging Industry BriefDredging Industry BriefDredging Industry BriefDredging Industry Brief 3 April 20133 April 2013 #12;NAD Sandy Dredging BriefNAD Sandy Dredging Brief · Purposep · Goals · Sandy Program Overview

  13. Research on Rice Production in Texas.

    E-Print Network [OSTI]

    Reynolds, E. B.

    1954-01-01T23:59:59.000Z

    of phosphoric acid per acre (80-40-0) gave better than other fertilizers on Beaumont clay, Lake Charles clay and Lake Charles clay loam, and ommended for these soils. The use of 40-40-20 is recommended for Katy fine sandy loam. could h !-ield. he app... Pa el .......................................................... Lake Charles Clay 17 .............................................. Lake Charles Clay Loam 17 ................................................ Katy Fine Sandy Loam 17...

  14. Relation of the Occurrence of Cotton Root Rot to the Chemical Composition of Soils.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Fudge, J. F. (Joseph Franklin)

    1935-01-01T23:59:59.000Z

    in soils with a 1 per 1p.p.m.l i per 1 per IP-P.~.~ 1 cent cent cent High damage: Houston clay. .... .12 75 .16 1 .OO .40 200 13.00 .6C Houston black ciay .08 100 .12 1.03 .40 350 4.00 .5C Houston clay loam .03 150 .07 .65 .30 100 .70 .30 Houston... loam. ... .03 30 .10 .80/ .30 250 .SO1 .20 Soil Type Low damage: Kirvin fine sandy loam .......... .04 15 .05 .55 .lo 100 .21 .13 Norfolk fine sandy loam. ......... .03 25 .04 .45 .lo 100 .11 .11 Ruston fine sandy loam. ......... .03 15 .03 .78...

  15. Hurricane Sandy Situation Reports (October & November 2012)

    Broader source: Energy.gov [DOE]

    Hurricane Sandy situation reports detail the storm's impacts and the restoration activities being taken by the energy sector.

  16. Corn Hybrids for Texas.

    E-Print Network [OSTI]

    Bockholt, A. J.; Collier, J. W.

    1960-01-01T23:59:59.000Z

    Loams and sandy loams Sandy soils Coast Prairie Blackland Loams and sandy loams Blackland Prairies Blackland Mixed land Grand Prairie Blackland Mixed land West Cross Timbers Rio Grande Plain Blackland Sands and sandy loams Lower Rio Grande... Valley and Winter Garden Dist. (under irrigation) Clays and loams Sands and sandy loams Rolling Plains Clay loams Sands and sandy loams High Plains (irrigated) Clay loams Sandy loams Sands Spac- Fertilizer dress- I " ing at ing of Planting...

  17. This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research

    E-Print Network [OSTI]

    Logan, David

    institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling (light-demanding vs. shade-tolerant) on two soil habitats (clay-fine loam and sandy loam) within a 52-ha of generalist species growing on the relatively moister, more fertile clay-fine loam soil habitat would have

  18. Chemical Composition of Soils of Texas.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Fudge, J. F. (Joseph Franklin)

    1937-01-01T23:59:59.000Z

    STATION Table 5. Analyses of soils of the Gulf Coast Prairie-Continued Type Name Flat marshy to semi-marshy soils ....................... Harr~e clay, surface.. Harris clay, subsoil. ........................ Harris fine sandy loam, surface.... ............. Harris fine sandy loam. subsoil.. ............. Tidal marsh. surface.. ...................... Tidal marsh. subsoil. ....................... Flat stream bottom soils Guadalupe clay. surface.. ................... Guadalupe clay, subsoil...

  19. The Composition of Fertilizing Value of Sewage Sludge.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1932-01-01T23:59:59.000Z

    cent nitrogen, and with a basicity of 0.15 per cent. No. 31889. Webb fine sandy loam, 7 to 19 inches deep, Frio county, containing .083 per cent nitrogen, with a basicity of 0.95 per cent. No. 33124. Moscow fine sandy loam, 0 to 3 inches deep, Polk... county, containing .047 per cent nitrogen and with a basicity of .20 per cent. No. 33131. Bowie fine sandy loam, 7 to 15 inches deep, Polk county, containing .020 per cent nitrogen and with a basicity of .01 per cent. No. 33135 Susquehanna fine sandy...

  20. Mid-Atlantic Coastal Storms and Hurricane Sandy

    E-Print Network [OSTI]

    Firestone, Jeremy

    Mid-Atlantic Coastal Storms and Hurricane Sandy Daniel J. Leathers Department of Geography-Atlantic tropical systems and extra-tropical coastal storms. · Observing Hurricane Sandy in Delaware. · Unusual characteristics of Hurricane Sandy. · Impacts of Sandy on Delaware. #12;Some things to discuss... · A brief

  1. The Soils of Bowie, Denton, Freestone, and Red River Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1928-01-01T23:59:59.000Z

    (The *Fertilizer Green Book, December, 1922). The corn possibility is a convenient way of comparing amounts of various foods in the soil. For example, with the Bowie very fine sandy loam of Red River County, the corn possibility for active.... Thirty-four ty~es mere mapped, divided into seventeen series. A key to the classifi- cation of the soils is given below. The Susquehaniia very fine -sandy loam occupies 18.0 per cent of the county, the Bowie very fine sandy loam 11.5 per cent...

  2. Fine-grained sedimentation on the Chenier Plain Coast and inner continental shelf, northern Gulf of Mexico

    E-Print Network [OSTI]

    Draut, Amy Elizabeth

    2003-01-01T23:59:59.000Z

    This thesis examines the evolution of a mud-dominated coastal sedimentary system on multiple time scales. Fine-grained systems exhibit different properties and behavior from sandy coasts, and have received relatively little ...

  3. Original article Mechanical behaviour of silty clay loam/peat mixtures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Original article Mechanical behaviour of silty clay loam/peat mixtures: cyclic compression or amended with 20 or 40 % by volume of spagh- num peat, were studied at different values of water contentPa is increased to about 55 and 115 % for 20 and 40 % peat contents, respectively. A comparison of the cyclic test

  4. Salinization of Irrigated Urban Soils: A Case Study of El Paso, TX

    E-Print Network [OSTI]

    Miyamoto, S.

    2012-10-25T23:59:59.000Z

    , as well as the North Central. A detailed soil survey is yet to be performed for this area, but most of the area consists of either Hueco fine sandy loam or Wink sandy loam, both of which contain the calcic horizon (a layer of caliche), starting at 18... the two. The Hueco series is supposedly older soil, and the surface layer (2 to 4 inches) may not contain appreciable amounts of CaCO3. Although, it is rare, deep sandy loam can also be found along arroyos in the East District. It is named Mimbres sandy...

  5. Chemical Composition of Soils of Northwest and West Central Texas.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1932-01-01T23:59:59.000Z

    , the eastern half by lower Rolling Plains. The Amarillo series is the most extensive series in the ~igh Plains, and the Amarillo fine sandy loam the most ex- tensive type, while the Amarillo clay loam is nearly as extensive. Both these types are important... agricultural soils and are productive. The Vernon series is the most extensive series on the Rolling Plains. The Vernon Clay is the most extensive type, while the Vernon clay loam and the Vernon fine sandy loam are next in extent. These are brown to red...

  6. Losses of Moisture and Plant Food By Percolation.

    E-Print Network [OSTI]

    Fraps, G. S.

    1914-01-01T23:59:59.000Z

    -1 2 inc.-Orangeburg fine sandy loam, 110 pounds, No. 2:l78. Pots Nos. 13-18 inc.-H0uston loam, 57 pounds surface soil, No. 3333; 57 pounds subsoil, No. 333'1. Pots Nos. 19-24 inc.-Houston black clay, 45 pounds surface soil, No. 3335 _; 45 pounds... loam, 56 pounds subsoil, No. 3337; 56 pounds surface soil, No. 3338. Pots Nos. 37-42 inc.-Crawford clay, 50 pounds surface soil, No. 3343; 50 pounds subsoil, No. 3344. Pots Nos. 43-48 inc.-Lufkin fine sandy loam, 55. pounds surface soil, No. 3631...

  7. Quantifying the Digital Traces of Hurricane Sandy on Flickr

    E-Print Network [OSTI]

    Stanley, H. Eugene

    Quantifying the Digital Traces of Hurricane Sandy on Flickr Tobias Preis1 *, Helen Susannah Moat1 social science. To investigate user attention to the Hurricane Sandy disaster in 2012, we analyze data to Hurricane Sandy bears a striking correlation to the atmospheric pressure in the US state New Jersey during

  8. Hurricane Sandy Recovery Mission Commander's Update October 2013

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Hurricane Sandy Recovery Mission Commander's Update October 2013 U.S. Army Corps of Engineers North Atlantic Division Partners and Stakeholders, As we approach the first anniversary of Hurricane Sandy in communities impacted by Hurricane Sandy, and this undertaking extends well beyond professional duty. For us

  9. Disaster Unemployment Assistance (DUA) Due to Effects of Hurricane Sandy

    E-Print Network [OSTI]

    Brinkmann, Peter

    Disaster Unemployment Assistance (DUA) Due to Effects of Hurricane Sandy Factsheet Have you lost work or income due to the effects of Hurricane Sandy? If so, you may be eligible for Disaster due to the effects of hurricane sandy, you may qualify for DUA. there are different eligibility

  10. EIS-0315-S1: SEIS on Caithness Big Sandy Project

    Broader source: Energy.gov [DOE]

    In June 2001, the Bureau of Land Management (BLM) and Western Area Power Administration (Western) issued the Big Sandy Energy Project Draft Environmental Impact Statement (EIS) (BLM and Western 2001). After June 2001, Caithness Big Sandy, L.L.C. (Caithness), revised aspects of the Big Sandy Energy Project (Project) described as the Proposed Action in the Draft EIS.

  11. Effect of urbanization on the geologic and hydrologic behavior of streams in College Station, Texas

    E-Print Network [OSTI]

    Groschel, Henrike Margarete

    1985-01-01T23:59:59.000Z

    Table 1. Revised agricultural soil names (after Ruckman, 1978). Thesis ~Sbol SCS ~Sbo1 Soil Seri es--Type--Phase Aa Ba Bd C Ga Gd H Ia Ib Ka La Lc Lf Ma Mb Aa Ba Bd Cc Cd Ea Eb Ga Gd Hb Hc Ia Ib Ka La Lb Lc Ld Lf... clay, 3-BX slopes Oa Miller silt loam, 0-1% slopes Ochlockonee fine sandy loam, 0-1% slopes 14 Table l. ( continued) Thesis ~Sbo1 SCS ~Sbo1 Soil Series--Type--Phase Ta Te Ta Tc Te Wa Tabor fine sandy loam, 1-3X slopes Tabor loamy fine...

  12. Short communication Buried relic seawall mitigates Hurricane Sandy's impacts

    E-Print Network [OSTI]

    Lynett, Patrick

    Short communication Buried relic seawall mitigates Hurricane Sandy's impacts Jennifer L. Irish a Accepted 6 June 2013 Available online xxxx Keywords: Hurricanes Storm surge Waves Storm damage Seawalls of Hurricane Sandy revealed clear differences in patterns of the impact between two neighboring boroughs along

  13. A Preliminary Analysis of Network Outages During Hurricane Sandy

    E-Print Network [OSTI]

    Heidemann, John

    A Preliminary Analysis of Network Outages During Hurricane Sandy USC/ISI Technical Report ISI outages during the October 2012 Hurricane Sandy. We assess net- work reliability by pinging a sample network outages, we see that the out- age rate in U.S. networks doubled when the hurricane made landfall

  14. 2007 Texas High Plains Sunflower Weed Control Guide Brent Bean, Extension Agronomy, Texas A&M-Amarillo, bbean@ag.tamu.edu, 806-677-5600

    E-Print Network [OSTI]

    Mukhtar, Saqib

    2007 Texas High Plains Sunflower Weed Control Guide Brent Bean, Extension Agronomy, Texas A, silty clay, clay. Medium = loam, silt loam, silt, sandy clay loam. Coarse = sand, loamy sand, sandy loam

  15. Overview of Response to Hurricane Sandy-Nor'Easter and Recommendations...

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

    Response to Hurricane Sandy-Nor'Easter and Recommendations for Improvement (February 2013) Overview of Response to Hurricane Sandy-Nor'Easter and Recommendations for Improvement...

  16. The Composition of the Soils of South Central Texas.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1917-01-01T23:59:59.000Z

    from the air. TABLE 2-Continued. ds of Plant Food Per Acre to the Depth of - potash. fictive ! Total Active - -- phosphoric phosphol~ 1 u~iil solu~~t: acid acid. 1 potash. potash. 1 Type. - ................ Tishomingo gravelly sandy loam.... Tishomjngo loam. ......................... Tishomingo sandy loam. ........................ Tishomingo sandy loam.. ....................... Tishomingo stony clay Joam. .................... Tishomingo stony sandy loam.. .. .: .............. Travis eravelly...

  17. NOAA Water Level and Meteorological Data Report HURRICANE SANDY

    E-Print Network [OSTI]

    ..................................................11 Table of Maximum Recorded Water Level Residuals (Storm Surge.................................................................17 Time-Series Plots of Observed, Predicted and Residual Water LevelsNOAA Water Level and Meteorological Data Report HURRICANE SANDY Silver Spring, Maryland January 24

  18. The Chemical Composition of Some Texas Soils. 

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1907-01-01T23:59:59.000Z

    , nitrogen, and potash. keeps the soil from beconling acid, and has a favorable effect upon its physical character. Hence a deficiency of lime should be corracted by applications of quicklime, slaked lime, or ground limestone. Lime is lost in considerable... tne usquehanna clay appear to contain sufficient potash. The Lufkin and Sus- uehanna soils are low in lime. All the soils tested by pot experiments respond to phosphoric acid--the Norfolk fine sand, Norfolk fine sandy loam, Orangeburg fine sandy...

  19. Performance testing of the Sandy Pond HVDC converter terminal

    SciTech Connect (OSTI)

    Donahue, J.A.; Fisher, D.A.; Railing, B.D.; Tatro, P.J. (New England Power Service Co., Westborough, MA (United States))

    1993-01-01T23:59:59.000Z

    Results of several performance tests for the 1,800 MW Sandy Pond HVDC converter terminal are presented and discussed. The work progressed during 1990 and 1991 and included tests for power line carrier interference, audible sound, ac and dc line faults and dc harmonic performance. The testing was conducted as part of the commissioning program for the first stage of the Quebec-New England Phase 2 multi-terminal system. In this stage, the Radisson (Quebec) and Sandy Pond (New England) terminals are operational.

  20. Wiener Numbers of Pericondensed Benzenoid Hydrocarbons Sandi Klav zar

    E-Print Network [OSTI]

    Klavzar, Sandi

    Wiener Numbers of Pericondensed Benzenoid Hydrocarbons Sandi Klav#20;zar Department of Mathematics expressions for W for several homologous series of pericondensed benzenoid hydrocarbons. An elementary proof polycyclic systems studied were catacondensed benzenoid hydrocarbons. 11{14 Few years ago the situation

  1. Benjamin Peirce and the Howland Will Paul Meier; Sandy Zabell

    E-Print Network [OSTI]

    -1459%28198009%2975%3A371%3C497%3ABPATHW%3E2.0.CO%3B2-G Journal of the American Statistical Association is currently published by American Statistical Association. Your use of the JSTOR archive indicates your acceptanceBenjamin Peirce and the Howland Will Paul Meier; Sandy Zabell Journal of the American Statistical

  2. Climate change and superstorm Sandy November 1, 2012

    E-Print Network [OSTI]

    Belogay, Eugene A.

    Climate change and superstorm Sandy linked? November 1, 2012 By Erika Bolstad McClatchy Newspapers WASHINGTON -- There's no clear answer to the scientific debate over whether climate change, including impacts go from Florida to Maine," said Leonard Berry, the director of the Climate Change Initiative

  3. Mad Cows, Hurricane Sandy, and Why We Need Strong Science Assessors

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    Mad Cows, Hurricane Sandy, and Why We Need Strong Science Assessors bridges vol. 36, December 2012 of Hurricane Sandy. In the 1990s, as the British public became aware that bovine spongiform encephalopathy (BSE and oversight are necessary. Aerial view of the damage caused by Hurricane Sandy to the New Jersey coast. Source

  4. 2000-2011 New York Independent System Operator, Inc. All Rights Reserved. DRAFT FOR DISCUSSION PURPOSES ONLY Hurricane Sandy

    E-Print Network [OSTI]

    PURPOSES ONLY Hurricane Sandy Preparations, Response & Recovery Wes Yeomans Vice President ­ Operations

  5. The Soils of Eastland, El Paso, Lubbock and San Saba Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1926-01-01T23:59:59.000Z

    foods in the soil. example, with the Caddo fine sandy loam of Camp county, the corn possibility for active phosphoric acid is 18, for the active potash 80, and for total nitrogen 23. The soil is probably deficient first in phos- phoric acid..., and vegetables are also produced as well as live stock. Table 4 contains the acreage and percentage of some of the types of soils which occur in Eastland county. Sixteen types were mapped and grouped into seven series. The Windthorst fine sandy loam occupies...

  6. Performance of Peach Varieties in East Texas.

    E-Print Network [OSTI]

    Morris, H. F.

    1958-01-01T23:59:59.000Z

    flesh. This bulletin gives the results of a survey on the performcmce cmd characteristics of most of the new varieties, and a number of the older ones, made at the Tyler station during 1949-57. A report was made in 1947 on 227 peach varieties... No. 2, Tyler, Texas A LIMITED HISTORICAL REVIEW of peach growing ing from fine sandy loam to reddish gravelly fine in East Texas, some indications as to the cause sandy loam. for certain failures and a detailed report on an extensive list of peach...

  7. Fine Grained Robotics

    E-Print Network [OSTI]

    Flynn, Anita M.

    Fine grained robotics is the idea of solving problems utilizing multitudes of very simple machines in place of one large complex entity. Organized in the proper way, simple machines and simple behaviors can lead to emergent ...

  8. Big Sandy Rural Elec Coop Corp | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia: EnergyAvignon,Belcher Homes JumpMaintenance |Big CreekBig Sandy Rural

  9. Big Sandy, Montana: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation in Carbonof Alternative Sources ofBeyondPV CoSandy, Montana:

  10. Evaluation of the sorption mechanism of catechol and its chlorinated derivatives in a Palouse silt loam soil

    SciTech Connect (OSTI)

    Harper, S.S.

    1984-01-01T23:59:59.000Z

    Catechol and its chlorinated derivatives are important in soil as intermediary metabolites in the degradation of many synthetic and naturally-occurring aromatics. This study examined the sorption mechanisms of catechol, 4-chlorocatechol, 4,5-dichlorocatechol, and tetrachlorocatechol in a Palouse silt loam soil. Sorption was evaluated by the batch equilibration method using /sup 14/C-labeled chemicals and varying solvent combinations and conditions. Data were fitted to the Freundlich isotherm equation. All the catechols were strongly sorbed with isotherm slopes of one or greater indicating strong intermolecular associations upon adsorption. Sorption decreased as the catechol molecule became more chlorinated, except tetrachlorocatechol which was one of the most sorbed. Increasing the ionic strength of the solution increased sorption of dichlorocatechol and tetrachlorocatechol. Increasing quantities of acetone or 2-propanol in the equilibration solution produced little change in the sorption of catechol and chlorocatechol, but a slight decrease in the sorption of dichlorocatechol and tetrachlorocatechol. These results indicate that solubility and hydrophobicity had s significant effect on the adsorption of dichlorocatechol and tetrachlorocatechol.

  11. U.S. ARMY CORPS OF ENGINEERS HURRICANE SANDY COASTAL MANAGEMENT DIVISION 130 Wainwright Dr. Fort Hamilton, NY 11209

    E-Print Network [OSTI]

    US Army Corps of Engineers

    U.S. ARMY CORPS OF ENGINEERS ­ HURRICANE SANDY COASTAL MANAGEMENT DIVISION 130 Wainwright Dr. Fort,000 miles of coastline within the North Atlantic Division that were affected by Hurricane Sandy. The study response to the devastation in the wake of Hurricane Sandy represents a need to address as a regional

  12. Hurricane Sandy Relief Fund for Hunter College DPT Program including donations specified to assist our secretary Mary Cleary.

    E-Print Network [OSTI]

    Qiu, Weigang

    Hurricane Sandy Relief Fund for Hunter College DPT Program including donations specified to assist.00 to $200.00 $500 and Higher #12;Hurricane Sandy Relief Fund for Hunter College DPT Program including Anonymous Anonymous Anonymous Christina Antonovich $99.00 to $50.00 #12;Hurricane Sandy Relief Fund

  13. Monthly communications by the International Potash Institute, Berne (Switzerland) Soil science No. 5/1981

    E-Print Network [OSTI]

    Sparks, Donald L.

    of this phase of the study were to evaluate the plant availability of subsoil K in two Dothan fine sandy loam in these primary mineral forms suggests that parent material was the origin of most of the K in each horizon- Non- Primary mineral K Total K Total K HCI-H.SO. change- ex ext.K able K change- Feldspar Mica Sand

  14. Influence of a grass sod on infiltration rates and pore space of Miller clay

    E-Print Network [OSTI]

    Raut, Gajendra Nath

    1952-01-01T23:59:59.000Z

    of cover crops on ~ physical snd elmmslcal properties of Qnslow fine sandy loam. Soil ~ Soc? Amer. Proc?q lis47 49? 1946. Raison, K. R. ~ snd Raver, I 0? khvement of mater 4~~ soils in relation to the nature oi tim pores. Soil Sci, Joc. Ansr? Proc...

  15. The Soils of Brazos, Camp, Ellis, and Washington Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1924-01-01T23:59:59.000Z

    the de- ficiency of various plant foods in the soil. For example, with the Caddo fine sandy loam of Camp county the corn possibil- ity for active phosphoric acid is 18, for active potash 80, and for total nitrogen 23. The soil is probably deficient..., and vegetables are produced. , B~ozos Goun~ Lufkin fine Son$ Loom 1 Mi//er C/oy - Phospbr~c Acid - Nitroyeen -&tosh Su.s9wktanna fine Sari+ Loam - %.or fink? Son+/ Lwm 4Q 60 /OO 124 Corn possi61Ffy Active Phosphoric Acid 18 30 35 35 Figure 3...

  16. The Apollo 15 Coarse Fines

    E-Print Network [OSTI]

    Rathbun, Julie A.

    I The Apollo 15 Coarse Fines (4-10 mm) Graham Ryder Sarah Bean Sherman Lunar and Planetary. TX 77058-4399 REFERENCE copy PLEASf 00 NOtr REbOIE #12;( The Apollo 15 Coarse Fines (4-10 mm) Graham. Johnson Space Center Houstqn, Texas JSC# 24035 #12;( THE APOLLO 15 COARSE FINES (4-10 mm) Introduction

  17. Potential Geomorphic and Ecological Impacts of Marmot Dam Removal, Sandy River, OR

    E-Print Network [OSTI]

    Marmot Dam is a 13-meter (42 ft) high hydroelectric diversion dam on the Sandy River that is owned Run Hydroelectric project and began the process of creating a decommissioning plan for the dam

  18. A review of "The Classical Heritage in France." by Gerald Sandy ed.

    E-Print Network [OSTI]

    Zahi Zalloua

    2006-01-01T23:59:59.000Z

    tightly main- tained; and the prose lucid. In sum, to the historically-minded reader Harrison offers a confusion?s masterpiece. Gerald Sandy, ed. The Classical Heritage in France. Brill?s Studies in Intellectual History, vol. 109. Leiden: Brill, 2002.... vi + 592 pp. 189 Euros. Review by ZAHI ZALLOUA, WHITMAN COLLEGE. In this edited volume, which brings together a remarkable array of schol- ars across disciplines, Gerald Sandy proposes to study the classical roots of early modern France. Opening...

  19. Continuous fine ash depressurization system

    DOE Patents [OSTI]

    Liu, Guohai (Birmingham, AL); Peng, Wan Wang (Birmingham, AL); Vimalchand, Pannalal (Birmingham, AL)

    2011-11-29T23:59:59.000Z

    A system for depressurizing and cooling a high pressure, high temperature fine solid particles stream having entrained gas therein. In one aspect, the system has an apparatus for cooling the high pressure, high temperature fine solid particles stream having entrained gas therein and a pressure letdown device for depressurization by separating the cooled fine solid particles from a portion of the fine solid particles stream having entrained gas therein, resulting in a lower temperature, lower pressure outlet of solid particles for disposal or handling by downstream equipment.

  20. A floristic study of the La Copita Research Area in Jim Wells County, Texas

    E-Print Network [OSTI]

    Coffey, Charley Ralston

    1986-01-01T23:59:59.000Z

    runoff and medium available water capacity. The potential for native range plant growth and wildlife habitat on Sandy cl ~Le end sl = Sandy Loam cl Clay Loam gsl Gray Sandy Loam cpp = Claypan Prairie ssl = Shallow Sandy Loam lb Lakebed sl... = Shallow Ridge tsl = Tight Sandy Loam asl sr ssl cl sl cl /lb tsl cl asl as l cl sl Ia esl cl sl esl gal cpp Sf cpp 8 cl Ib Figure 3. Range Sites within the La Copita Research Area. Loam range sites is high. These sites provide...

  1. Beer Bike Violations & Fines 2012 # Water/Balloon Violations Fine

    E-Print Network [OSTI]

    Beer Bike Violations & Fines 2012 # Water/Balloon Violations Fine 1 Consistent under the violating college) 2 Filling balloons with any substance but water $1,500 per offense 3 Hitting Beer Bike Beer Bike shirt $150 per person 12 Unauthorized Entry to Buildings $200 per offense 13 Non

  2. Effects of three grazing systems on quail on the Northern Rio Grande Plain, Texas

    E-Print Network [OSTI]

    Campbell, Linda

    1981-01-01T23:59:59.000Z

    through December 1980. Species composition of grasses, forbs and shrubs was de- termined for clay loam, sandy loam and shallow ridge range sites. Foliar cover of grasses abundance of forbs, and height and weight of both classes were determined... was highest on sandy loam sites. Di- versity generally increased with pasture deferment and with favorable growing conditions. The foliar cover, height and weight of grasses were significantly greater on clay loam sites than on sandy loam or shallow ridge...

  3. Effects of three grazing systems on quail on the Northern Rio Grande Plain, Texas 

    E-Print Network [OSTI]

    Campbell, Linda

    1981-01-01T23:59:59.000Z

    through December 1980. Species composition of grasses, forbs and shrubs was de- termined for clay loam, sandy loam and shallow ridge range sites. Foliar cover of grasses abundance of forbs, and height and weight of both classes were determined... was highest on sandy loam sites. Di- versity generally increased with pasture deferment and with favorable growing conditions. The foliar cover, height and weight of grasses were significantly greater on clay loam sites than on sandy loam or shallow ridge...

  4. Manufacture of finely divided carbon

    SciTech Connect (OSTI)

    Walker, D.G.

    1980-01-22T23:59:59.000Z

    Finely divided carbon is manufactured by a process producing a gaseous stream containing carbon monoxide by reacting coal and air in a slagging ash gasifier, separating carbon monoxide from the gaseous mixture, and disproportionating the carbon monoxide to produce finely divided carbon and carbon dioxide, the latter of which is recycled to the gasifier.

  5. Potential Water Use Conflicts Generated by Irrigated Agriculture in Rhode Island

    E-Print Network [OSTI]

    Gold, Art

    Potential Water Use Conflicts Generated by Irrigated Agriculture in Rhode Island Arthur Gold. Drought stress regularly occurs in turf and nursery crops planted on loam and sandy loam soils. Epstein rain in the summer for sandy loam soils and after 6 days without rain on silt loam soils. Supplemental

  6. Morphology of rain water channelization in systematically varied model sandy soils

    E-Print Network [OSTI]

    Y. Wei; C. M. Cejas; R. Barrois; R. Dreyfus; D. J. Durian

    2014-03-13T23:59:59.000Z

    We visualize the formation of fingered flow in dry model sandy soils under different raining conditions using a quasi-2d experimental set-up, and systematically determine the impact of soil grain diameter and surface wetting property on water channelization phenomenon. The model sandy soils we use are random closely-packed glass beads with varied diameters and surface treatments. For hydrophilic sandy soils, our experiments show that rain water infiltrates into a shallow top layer of soil and creates a horizontal water wetting front that grows downward homogeneously until instabilities occur to form fingered flows. For hydrophobic sandy soils, in contrast, we observe that rain water ponds on the top of soil surface until the hydraulic pressure is strong enough to overcome the capillary repellency of soil and create narrow water channels that penetrate the soil packing. Varying the raindrop impinging speed has little influence on water channel formation. However, varying the rain rate causes significant changes in water infiltration depth, water channel width, and water channel separation. At a fixed raining condition, we combine the effects of grain diameter and surface hydrophobicity into a single parameter and determine its influence on water infiltration depth, water channel width, and water channel separation. We also demonstrate the efficiency of several soil water improvement methods that relate to rain water channelization phenomenon, including pre-wetting sandy soils at different level before rainfall, modifying soil surface flatness, and applying superabsorbent hydrogel particles as soil modifiers.

  7. Productivity of 10 Warm-Season Perennial Grasses Over Several Years in Central Texas.

    E-Print Network [OSTI]

    Sanderson, Matt A.; Jones, Ronald M.; Newman, James S.

    1991-01-01T23:59:59.000Z

    vironments. In Experiment 1, the yield response of 'Morpa' and 'Renner' lovegrass [Eragrostis curvula (Schrad.) N ees], 'Selection-75' kleingrass (Panicum coloratum L.), buffelgrass (Cenchrus ciliaris L., strain 18-35) and 'Coastal', 'Coastcross-1... to four levels of N was evaluated during 1972, and 1974 to 1977. Strain 18-35 buffelgrass, Morpa lovegrass, Selection-75 kleingrass, and Coastal, Coastcross-1, and Alecia bermudagrass were planted in a Windthorst fine sandy loam (fine, mixed, thermic...

  8. Team Akron Brass Ball Bearing Analysis Ryan Bonazza, Jennifer Hyland, Jon Katz, Sandy Risha

    E-Print Network [OSTI]

    Demirel, Melik C.

    Team Akron Brass ­ Ball Bearing Analysis Ryan Bonazza, Jennifer Hyland, Jon Katz, Sandy Risha frequently; therefore, raised burrs will potentially appear sooner and more often. Team Akron Brass. However, the ball has formed a groove that could be potentially detrimental to the monitor. Our team

  9. Sensor-Based Organizational Engineering Daniel Olgun Olgun and Alex (Sandy) Pentland

    E-Print Network [OSTI]

    Sensor-Based Organizational Engineering Daniel Olguín Olguín and Alex (Sandy) Pentland MIT Media in the workplace, combined with data mining techniques and social network analysis for organizational engineering Descriptors H.5.3 [Information Interfaces and Presentation]: Group Organization Interfaces-- Organizational

  10. SPECTRAL CHARACTERIZATION OF SANDY BEACHES IN WESTERN PORTION OF PUERTO RICO

    E-Print Network [OSTI]

    Gilbes, Fernando

    SPECTRAL CHARACTERIZATION OF SANDY BEACHES IN WESTERN PORTION OF PUERTO RICO By Gretchen M in GEOLOGY UNIVERSITY OF PUERTO RICO MAYAGÜEZ CAMPUS 2005 Approved by of the Department #12;ii Abstract Remote sensing applications to beach system in Puerto Rico have been limited

  11. Logo Detection in Document Images Steve Seiden \\Lambda Michael Dillencourt \\Lambda Sandy Irani \\Lambda

    E-Print Network [OSTI]

    Irani, Sandy

    Logo Detection in Document Images Steve Seiden \\Lambda Michael Dillencourt \\Lambda Sandy Irani of classifying segments of bitonal document images according to whether or not they are likely to contain a logo is to analyze electronic documents and to determine their source based on an identifying logo. We divide

  12. Vegetative response and cattle activities following patterned herbicide application

    E-Print Network [OSTI]

    Shaw, Robert Blaine

    1976-01-01T23:59:59.000Z

    in the Big Williams Pasture (Fig. 4) (USDA, 1967'. ). The major sire, clay loam:, occurs on. about 65/ of the pasture. The other rarge sites are: tight sandy 1oam (16X), gray sandy loam (9X), clay tlat. (6X), sandy loam (3X), and loamy sand (1X). Major... soil type. s of the clay loam range site are Ramadero clay loam and Zavco ilty clay loam (Fig. 5) (USDA, 1972). These soils are deep with a clay loam surface and a clayey subsoil. Permea'oility of. the A horizon i. s moderate, whi' e the E horizon...

  13. Iodine in Texas Soils.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Fudge, J. F. (Joseph Franklin)

    1939-01-01T23:59:59.000Z

    , while the quantity of iodine in spinach bore a close relation to the quantity of iodine in the soil. The action. of the added iodine differed with the kind of soil. Hercus and Roberts (12) state that loam has a marked retentive power for soluble... in surface soils by soil types High 1 0 1 p. *. rn. Low p. p. m. .- 1.1 ........ 1.6 2.5 0.8 1.5 ........ ........ 1.1 ........ 2.0 East Texas Timber Country Upland soils with friable subsoils: Bowie fine sandy loam...

  14. Chemical Composition of Soils of Cass, Dickens, Falls, Hardeman, Polk, Scurry, and Wheeler Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Fudge, J. F. (Joseph Franklin)

    1940-01-01T23:59:59.000Z

    , and for potash 553. The soil is probably deficient in both phosphoric acid and nitrogen. This may be compared with the Abilene clay loam of Harde- man County (No. 37284, Table 15), which has a corn possibility of 76 bushels for nitrogen, 47 for phosphoric acid... widely out of agreement with figures for the same constituent in othcr samples of the same soil type were omitted from the averages. For example, two samples of Kirvin fine sandy loam in Cass County (Nos. 7112 and 7167) contained much more active...

  15. Effect of calcium chloride on pH and availability of zinc and phosphorus in three calcareous soils

    E-Print Network [OSTI]

    Podisuk, Varangkana

    1976-01-01T23:59:59.000Z

    loam ~ 39 2' 10 Effect of applied CaC12, P and Zn on water extractable soil Cl of Miller clay. 43 Effect of applied CaC1, P and Zn on water extractable soil Cl of Houston Black clay 12 Effect of applied CaC12, P and Zn on water extractable soil Cl... clay, Houston Black clay and Trinity fine sandy loam . 6p 19 Water extractable soil P as affected by dif- ferent treatments of Ca, P and Zn of the Miller, Houston Black and Trinity soils. . . . . . . . . 63 20 Water extractable soil Zn as affected...

  16. A resource complex for Sandy Neck Beach : an exploration in building on an ever-changing land

    E-Print Network [OSTI]

    Solarz, Cynthia L. (Cynthia Lynne)

    1987-01-01T23:59:59.000Z

    This thesis is an exploration into a spit of land, called Sandy Neck Beach on Cape Cod, Massachusetts. It is a barrier beach system which is experiencing many changes. These changes are manifest not only in its physical ...

  17. EA-2003: Sandy River Delta Section 536 Ecosystem Restoration Project, Multnomah County, Oregon

    Broader source: Energy.gov [DOE]

    The U.S. Army Corps of Engineers, with DOE’s Bonneville Power Administration as a cooperating agency, prepared an EA that assessed the potential environmental impacts of the proposed removal of a dam from the east channel of the Sandy River. The proposal would help fulfill a portion of the 2010-2013 Federal Columbia River Power System Biological Opinion Implementation Plan to improve estuary habitat for salmon and steelhead species listed under the Endangered Species Act.

  18. The effect of sulfur, magnesium, and various rates of potassium on forage production in some sandy soils of East Texas 

    E-Print Network [OSTI]

    Landua, Dennis Paul

    1969-01-01T23:59:59.000Z

    THE EFFECT OF SULFUR, MAGNESIUM, AND VARIOUS RATES OF POTASSIUM ON FORAGE PRODUCTION IN SOME SANDy SOILS OF EAST TEXAS A Thesis by DENNIS PAUL LANDUA Submitted to the Graduate Collccje of Texas AFM Unive, sity in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE Ma 1969 Major Subject Soil Chemistr THE EFFECT OF SULFUR, MAGNESIUM, AND VARIOUS RATES OF POTASSIUM ON FORAGE PRODUCTION IN SOME SANDY SOILS OF EAST TEXAS A Thesis by DENNIS PAUL LANDUA Approved...

  19. Compressive behavior of fine sand.

    SciTech Connect (OSTI)

    Martin, Bradley E. (Air Force Research Laboratory, Eglin, FL); Kabir, Md. E. (Purdue University, West Lafayette, IN); Song, Bo; Chen, Wayne (Purdue University, West Lafayette, IN)

    2010-04-01T23:59:59.000Z

    The compressive mechanical response of fine sand is experimentally investigated. The strain rate, initial density, stress state, and moisture level are systematically varied. A Kolsky bar was modified to obtain uniaxial and triaxial compressive response at high strain rates. A controlled loading pulse allows the specimen to acquire stress equilibrium and constant strain-rates. The results show that the compressive response of the fine sand is not sensitive to strain rate under the loading conditions in this study, but significantly dependent on the moisture content, initial density and lateral confinement. Partially saturated sand is more compliant than dry sand. Similar trends were reported in the quasi-static regime for experiments conducted at comparable specimen conditions. The sand becomes stiffer as initial density and/or confinement pressure increases. The sand particle size become smaller after hydrostatic pressure and further smaller after dynamic axial loading.

  20. Dense, finely, grained composite materials

    DOE Patents [OSTI]

    Dunmead, Stephen D. (Davis, CA); Holt, Joseph B. (San Jose, CA); Kingman, Donald D. (Danville, CA); Munir, Zuhair A. (Davis, CA)

    1990-01-01T23:59:59.000Z

    Dense, finely grained composite materials comprising one or more ceramic phase or phase and one or more metallic and/or intermetallic phase or phases are produced by combustion synthesis. Spherical ceramic grains are homogeneously dispersed within the matrix. Methods are provided, which include the step of applying mechanical pressure during or immediately after ignition, by which the microstructures in the resulting composites can be controllably selected.

  1. Effects of herbicide treatment of Acacia farnesiana savanna on cattle diets

    E-Print Network [OSTI]

    Hagevoort, Gerrit Robert

    1990-01-01T23:59:59.000Z

    are prevalent from southeasterly directions in March through October and northerly from November through February. Examination by SCS soil scientists of the soils on the site, determined that there are two major types of range sites: a fine sandy loam upland...-tricloro-2-pyridinyl)oxy)acetic acid), South Texas Plains Coastal Bend Jim Well's Caus lllc1 0 Santa Gertrudis Division, King Ranch, Inc. Khbe Coup+ a Nnsa4le Figure 1. Location of the study area. 10 35 / / / temper / / / / / / ? ? ? overage...

  2. Study on small-strain behaviours of methane hydrate sandy sediments using discrete element method

    SciTech Connect (OSTI)

    Yu Yanxin; Cheng Yipik [Department of Civil, Environmental and Geomatic Engineering, University College London (UCL), Gower Street, London, WC1E 6BT (United Kingdom); Xu Xiaomin; Soga, Kenichi [Geotechnical and Environmental Research Group, Department of Engineering, University of Cambridge, Trumpington Street, Cambridge, CB2 1PZ (United Kingdom)

    2013-06-18T23:59:59.000Z

    Methane hydrate bearing soil has attracted increasing interest as a potential energy resource where methane gas can be extracted from dissociating hydrate-bearing sediments. Seismic testing techniques have been applied extensively and in various ways, to detect the presence of hydrates, due to the fact that hydrates increase the stiffness of hydrate-bearing sediments. With the recognition of the limitations of laboratory and field tests, wave propagation modelling using Discrete Element Method (DEM) was conducted in this study in order to provide some particle-scale insights on the hydrate-bearing sandy sediment models with pore-filling and cementation hydrate distributions. The relationship between shear wave velocity and hydrate saturation was established by both DEM simulations and analytical solutions. Obvious differences were observed in the dependence of wave velocity on hydrate saturation for these two cases. From the shear wave velocity measurement and particle-scale analysis, it was found that the small-strain mechanical properties of hydrate-bearing sandy sediments are governed by both the hydrate distribution patterns and hydrate saturation.

  3. Roadmap: Fine Arts Interdisciplinary Painting/Sculpture Bachelor of Fine Arts

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Fine Arts ­ Interdisciplinary Painting/Sculpture ­ Bachelor of Fine Arts [CA This roadmap is a recommended semester-by-semester plan of study for this major. However, courses on page 2 Kent Core Requirement 3 #12;Roadmap: Fine Arts ­ Interdisciplinary Painting/Sculpture ­ Bachelor

  4. Roadmap: Fine Arts Interdisciplinary Drawing/Sculpture Bachelor of Fine Arts

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Fine Arts ­ Interdisciplinary Drawing/Sculpture ­ Bachelor of Fine Arts [CA This roadmap is a recommended semester-by-semester plan of study for this major. However, courses on page 2 Kent Core Requirement 3 #12;Roadmap: Fine Arts ­ Interdisciplinary Drawing/Sculpture ­ Bachelor

  5. Advanced Fine Particulate Characterization Methods

    SciTech Connect (OSTI)

    Steven Benson; Lingbu Kong; Alexander Azenkeng; Jason Laumb; Robert Jensen; Edwin Olson; Jill MacKenzie; A.M. Rokanuzzaman

    2007-01-31T23:59:59.000Z

    The characterization and control of emissions from combustion sources are of significant importance in improving local and regional air quality. Such emissions include fine particulate matter, organic carbon compounds, and NO{sub x} and SO{sub 2} gases, along with mercury and other toxic metals. This project involved four activities including Further Development of Analytical Techniques for PM{sub 10} and PM{sub 2.5} Characterization and Source Apportionment and Management, Organic Carbonaceous Particulate and Metal Speciation for Source Apportionment Studies, Quantum Modeling, and High-Potassium Carbon Production with Biomass-Coal Blending. The key accomplishments included the development of improved automated methods to characterize the inorganic and organic components particulate matter. The methods involved the use of scanning electron microscopy and x-ray microanalysis for the inorganic fraction and a combination of extractive methods combined with near-edge x-ray absorption fine structure to characterize the organic fraction. These methods have direction application for source apportionment studies of PM because they provide detailed inorganic analysis along with total organic and elemental carbon (OC/EC) quantification. Quantum modeling using density functional theory (DFT) calculations was used to further elucidate a recently developed mechanistic model for mercury speciation in coal combustion systems and interactions on activated carbon. Reaction energies, enthalpies, free energies and binding energies of Hg species to the prototype molecules were derived from the data obtained in these calculations. Bimolecular rate constants for the various elementary steps in the mechanism have been estimated using the hard-sphere collision theory approximation, and the results seem to indicate that extremely fast kinetics could be involved in these surface reactions. Activated carbon was produced from a blend of lignite coal from the Center Mine in North Dakota and sunflower hulls for the biomass material to be carbonized. The ability to remove mercury from a bituminous coal's derived flue gas was low. Removals of only 15% were attained while injecting 6 lb/Macf of activated carbon upstream of an electrostatic precipitator. Poisoning of sites on the activated carbon by SO{sub 2} and SO{sub 3} contributed to the poor mercury capture performance.

  6. Sandy River Delta Habitat Restoration : Annual Report, January 2008 - March 2009.

    SciTech Connect (OSTI)

    Dobson, Robin [USDA Forest Service, Columbia River Gorge National Scenic Area

    2009-09-11T23:59:59.000Z

    During the period 2008-2009, there were 2 contracts with BPA. One (38539) was dealing with the restoration work for 2007 and the other (26198) was an extension on the 2006 contract including the NEPA for Dam removal on the old channel of the Sandy River. For contract 38539, the Sandy River Delta Habitat Restoration project continued its focus on riparian hardwood reforestation with less emphasis on wetlands restoration. Emphasis was placed on Sundial Island again due to the potential removal of the dike and the loss of access in the near future. AshCreek Forest Management was able to leverage additional funding from grants to help finance the restoration effort; this required a mid year revision of work funded by BPA. The revised work not only continued the maintenance of restored hardwood forests, but was aimed to commence the restoration of the Columbia River Banks, an area all along the Columbia River. This would be the final restoration for Sundial Island. The grant funding would help achieve this. Thus by 2011, all major work will have been completed on Sundial Island and the need for access with vehicles would no longer be required. The restored forests continued to show excellent growth and development towards true riparian gallery forests. Final inter-planting was commenced, and will continue through 2010 before the area is considered fully restored. No new wetland work was completed. The wetlands were filled by pumping in early summer to augment the water levels but due to better rainfall, no new fuel was required to augment existing. Monitoring results continued to show very good growth of the trees and the restoration at large was performing beyond expectations. Weed problems continue to be the most difficult issue. The $100,000 from BPA planned for forest restoration in 2008, was augmented by $25,000 from USFS, $120,000 from OR150 grant, $18,000 from LCREP, and the COE continued to add $250,000 for their portion. Summary of the use of these funds are displayed in Table 1 (page 5). Work on the restoration of the original Sandy River channel (dam removal, contract 26198) continued slowly. The draft EA was completed and sent out for review. The COE has decided to finish the NEPA with the intent to complete the project.

  7. SOUTHERN FINE PARTICULATE MONITORING PROJECT

    SciTech Connect (OSTI)

    Unknown

    2002-04-01T23:59:59.000Z

    This quarterly report presents results and analysis of continuous onsite ambient fine particulate data at the North Birmingham sampling site during the January-March, 2002 study period. The continuous data include PM{sub 2.5} mass concentrations measured by TEOM, particle sulfate using the R&P 8400S monitor, particle size distributions measured by SMPS and APS monitors, and PM{sub 2.5} light scattering extinction coefficient as measured by nephelometer. Some instrumental issues were noted with the upgrade of the APS model 3320 are described in the report, as well as preliminary performance indications for the upgraded instrument. During the quarter preliminary data analysis and modeling studies were conducted to test the potential of the North Birmingham site data for source attribution analyses. Our initial assessment has continued to be optimistic in this regard due to the location of the site relative to several important classes of local and midrange emission sources. We anticipate that these analyses will provide good separations of the effects of major source classes and spatial source clusters, and will provide useful information relevant to PM{sub 2.5} implementation strategies.

  8. U.S. HURRICANE DAMAGE CAN RISING LEVELS OF CO2 BE ASSOCIATED WITH SANDY'S MASSIVE DESTRUCTION?

    E-Print Network [OSTI]

    Birner, Thomas

    1 U.S. HURRICANE DAMAGE ­ CAN RISING LEVELS OF CO2 BE ASSOCIATED WITH SANDY'S MASSIVE Atlantic basin hurricane activity undergoes large yearly and multidecadal variability. A large portion of this variability, particularly the variability of the major or Category 345 hurricanes, is directly related

  9. Nitrogen limiation and nitrogen fixation during alkane biodegradation in a sandy soil

    SciTech Connect (OSTI)

    Toccalino, P.L.; Johnson, R.L.; Boone, D.R. (Oregon Graduate Institute of Science Technology, Portland, OR (United States))

    1993-09-01T23:59:59.000Z

    Leaking underground storage tanks are a significant source of petroleum hydrocarbon contamination in soils and ground water. Hydrocarbon biodegradation studies have been conducted in both ground water and topsoil regions, but few studies have been done on the unsaturated zone between these two. This study examines the effects of Nitrogen on propane and butane biodegradiations in an unsaturated sandy soil. Results indicate that nitrogen additions initially stimulated both propane and butane oxidizing organisms in the soil, but that propane-amended soil became N limited whereas butane-amended soil eventually overcame its N limitations by fixing Nitrogen and that nitrogen fixing organisms grew in butane amended but not in propane amended soil. 27 refs., 6 figs.

  10. MOBILIZATION AND CHARACTERIZATION OF COLLOIDS GENERATED FROM CEMENT LEACHATES MOVING THROUGH A SRS SANDY SEDIMENT

    SciTech Connect (OSTI)

    Li, D.; Roberts, K.; Kaplan, D.; Seaman, J.

    2011-09-20T23:59:59.000Z

    Naturally occurring mobile colloids are ubiquitous and are involved in many important processes in the subsurface zone. For example, colloid generation and subsequent mobilization represent a possible mechanism for the transport of contaminants including radionuclides in the subsurface environments. For colloid-facilitated transport to be significant, three criteria must be met: (1) colloids must be generated; (2) contaminants must associate with the colloids preferentially to the immobile solid phase (aquifer); and (3) colloids must be transported through the groundwater or in subsurface environments - once these colloids start moving they become 'mobile colloids'. Although some experimental investigations of particle release in natural porous media have been conducted, the detailed mechanisms of release and re-deposition of colloidal particles within natural porous media are poorly understood. Even though this vector of transport is known, the extent of its importance is not known yet. Colloid-facilitated transport of trace radionuclides has been observed in the field, thus demonstrating a possible radiological risk associated with the colloids. The objective of this study was to determine if cementitious leachate would promote the in situ mobilization of natural colloidal particles from a SRS sandy sediment. The intent was to determine whether cementitious surface or subsurface structure would create plumes that could produce conditions conducive to sediment dispersion and mobile colloid generation. Column studies were conducted and the cation chemistries of influents and effluents were analyzed by ICP-OES, while the mobilized colloids were characterized using XRD, SEM, EDX, PSD and Zeta potential. The mobilization mechanisms of colloids in a SRS sandy sediment by cement leachates were studied.

  11. Immobilization of Rocky Flats Graphite Fines Residue

    SciTech Connect (OSTI)

    Rudisill, T.S.

    1999-04-06T23:59:59.000Z

    The development of the immobilization process for graphite fines has proceeded through a series of experimental programs. The experimental procedures and results from each series of experiments are discussed in this report.

  12. York University Faculty of Fine Arts

    E-Print Network [OSTI]

    , Design, Digital Media, Film, Music, Theatre and Visual Arts. performance, which explores how digital media is transforming performance practice, Dance, Music, Film and Media Studies, Digital Media, or a related Fine Arts

  13. Soils and Climate... Of the Texas A&M University Research and Extension Center at Stephenville in Relation to the Cross Timbers Land Resource Area.

    E-Print Network [OSTI]

    Stahnke, C.R.; Godfrey, C.L.; Moore, Joe; Newman, J.S.

    1980-01-01T23:59:59.000Z

    arrangements wi th area farmers. Soils of the Cross Timbers are reasonably similar 9 with respect to several important properties. Tex- tures i n the surface horizons generally range from fine sand to fine sandy loam, unless the soils are severely...-om Cretaceous materials. Atlee (2) stated that outcrops of the Paluxy and Trinity sands comprise the "West Cross Timbers." Both are Cretaceous deposits (2, 11). Atlee noted that the Paluxy formation thickens to the north and merges with Trinity sand in Wise...

  14. Determination of soil properties for sandy soils and road base at Riverside Campus using laboratory testing and numerical simulation

    E-Print Network [OSTI]

    Saez Barrios, Deeyvid O.

    2010-07-14T23:59:59.000Z

    : Chair of Committee, Jean-Louis Briaud Committee Members, Charles Aubeny Julian Kang Head of Department, John Niedzwecki Major Subject: Civil Engineering iii ABSTRACT Determination of Soil Properties of Sandy... Soils and Road Base at Riverside Campus Using Laboratory Testing and Numerical Simulation. (May 2010) Deeyvid Oscar Saez Barrios, B.En., Technological University of Panama Chair of Advisory Committee: Jean-Louis Briaud This study evaluated...

  15. DIVISION S-5-PEDOLOGY Secondary Carbonates in Three Fine and Fine-loamy Alfisols in Michigan

    E-Print Network [OSTI]

    Schaetzl, Randall

    DIVISION S-5-PEDOLOGY Secondary Carbonates in Three Fine and Fine-loamy Alfisols in Michigan can be troublesome. We studied three Alfisol pedons in Michigan that contained secondary carbonates are young soils or those in drier climates. The Late Wisconsinan glaciated region of Michigan and nearby

  16. Cosmic Fine Tuning and the Multiverse Hypothesis

    E-Print Network [OSTI]

    Colin S. Coleman

    2012-06-28T23:59:59.000Z

    The observable universe is necessarily hospitable for life. There are indications, however, that the laws of physics and cosmological parameters need not take the form and values observed, and if they were slightly different life could not exist. A common approach to this fine tuning problem is to propose a cosmos with an ensemble of domains, mostly inhospitable for life. A Bayesian method is used to show that this hypothesis is more credible than a homogeneous fine tuned universe. This conclusion is straightforward for a finite ensemble, but can be extended to an infinite ensemble by applying a formulation of the Principle of Mediocrity.

  17. LAMINAR: PRACTICAL FINE-GRAINED DECENTRALIZED INFORMATION

    E-Print Network [OSTI]

    Witchel, Emmett

    · Programming language based (PL) · Example: Jif, Flow Caml · Operating system based (OS) · Example: AsbestosLAMINAR: PRACTICAL FINE-GRAINED DECENTRALIZED INFORMATION FLOW CONTROL (DIFC) Indrajit Roy, Donald, SSN, personal calendar... But not every program you run is trusted Bugs in code, malicious plugins

  18. 700:20131001.1211 Fine Sun Sensor

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    700:20131001.1211 Fine Sun Sensor The Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado, Boulder is a world leader in space-based research including measurements of the Sun with respect to sun center. LASP has built sun position sensors for decades beginning with sensors for sub

  19. University of Florida College of Fine Arts

    E-Print Network [OSTI]

    Watson, Craig A.

    ­ pursuing the degree ­ final project and exams ­ graduation. General information for both Master's degree1 University of Florida College of Fine Arts School of Music GRADUATE STUDIES HANDBOOK Section 1 for International Student Services Graduate Music Placement Exams Graduate Listserv Graduate Advisory Group Section

  20. 7, 96359661, 2007 apportionment of fine

    E-Print Network [OSTI]

    Boyer, Edmond

    ). The air pollution generated in megacities poses a threat to human health and25 the environment; Mexico organic aerosol in Mexico City during the MILAGRO Experiment 2006 E. A. Stone1 , D. C. Snyder1 , R. J fraction of fine particulate matter (PM2.5) in Mexico City. Daily and select 12-h PM2.5 samples were

  1. System for utilizing oil shale fines

    DOE Patents [OSTI]

    Harak, Arnold E. (Laramie, WY)

    1982-01-01T23:59:59.000Z

    A system is provided for utilizing fines of carbonaceous materials such as particles or pieces of oil shale of about one-half inch or less diameter which are rejected for use in some conventional or prior surface retorting process, which obtains maximum utilization of the energy content of the fines and which produces a waste which is relatively inert and of a size to facilitate disposal. The system includes a cyclone retort (20) which pyrolyzes the fines in the presence of heated gaseous combustion products, the cyclone retort having a first outlet (30) through which vapors can exit that can be cooled to provide oil, and having a second outlet (32) through which spent shale fines are removed. A burner (36) connected to the spent shale outlet of the cyclone retort, burns the spent shale with air, to provide hot combustion products (24) that are carried back to the cyclone retort to supply gaseous combustion products utilized therein. The burner heats the spent shale to a temperature which forms a molten slag, and the molten slag is removed from the burner into a quencher (48) that suddenly cools the molten slag to form granules that are relatively inert and of a size that is convenient to handle for disposal in the ground or in industrial processes.

  2. ORIGINAL ARTICLE Fine Particulate Matter and Mortality

    E-Print Network [OSTI]

    Dominici, Francesca

    landmark cohort studies for estimating the chronic effects of fine particulate air pollution (PM2 that the Medicare files can be used to construct on-going cohorts for tracking the risk of air pollution over time- tory diseases, and also with increased mortality.1­6 Chronic effects of air pollution potentially

  3. CONFERENCES | EVENTS | FINE DINING TRINITY HALL

    E-Print Network [OSTI]

    Lasenby, Joan

    CONFERENCES | EVENTS | FINE DINING #12;32 WELCOME WELCOME TO TRINITY HALL CONFERENCE AND EVENTS "If and point the way to the gardens of Trinity Hall. "HENRY JAMES 1878 Trinity Hall is the fifth oldest college from the hustle and bustle of the City, Trinity Hall has a quiet, peaceful air making it perfect

  4. Achieving progressive fine granularity scalable coding in H.26L

    E-Print Network [OSTI]

    Shanmugampillai, Muthukumar

    2001-01-01T23:59:59.000Z

    Fine granularity scalable (FGS) coding and progressive fine granularity scalable (PFGS) coding are novel scalable video schemes which are ideally suited for streaming multimedia over networks with varying bandwidth, network conditions and receiver...

  5. The helium fine-structure controversy

    E-Print Network [OSTI]

    Ingvar Lindgren

    2008-10-05T23:59:59.000Z

    There is presently disagreement between theory and experiment as well as between different theoretical calculations concerning the fine-structure splitting of the lowest P state of the neutral helium atom. We believe that we have found a minor error in the formulas used by Drake et al. (Can. J. Phys. 80, 1195 (2002)) in their calculations, and we may have an explanation how the error has occurred. To what extent this might resolve (part of) the discrepancy is not known at present.

  6. How Nature Fine Tunes Protein Stability

    E-Print Network [OSTI]

    Wickstrom, Megan

    2007-07-14T23:59:59.000Z

    UNDERGRADUATE RESEARCH FELLOWS April 2007 Major: Biology ii ABSTRACT How Nature Fine Tunes Protein Stability (April 2007) Megan Wickstrom Department of Biology Texas A&M University Fellows Co-Advisors: Dr. C. Nick Pace Department of Medical Biochemistry... appreciate their loving support. Also, this thesis is dedicated to my fiancé who has been a constant source of motivation and inspiration. v ACKNOWLEDGMENTS I wish to express my sincere thanks and appreciation to my supervisor and mentor, Dr. C. Nick Pace...

  7. Process for treating moisture laden coal fines

    DOE Patents [OSTI]

    Davis, Burl E. (New Kensington, PA); Henry, Raymond M. (Gibsonia, PA); Trivett, Gordon S. (South Surrey, CA); Albaugh, Edgar W. (Birmingham, AL)

    1993-01-01T23:59:59.000Z

    A process is provided for making a free flowing granular product from moisture laden caked coal fines, such as wet cake, by mixing a water immiscible substance, such as oil, with the caked coal, preferably under low shear forces for a period of time sufficient to produce a plurality of free flowing granules. Each granule is preferably comprised of a dry appearing admixture of one or more coal particle, 2-50% by weight water and the water immiscible substance.

  8. A management plan for the Douthitt Ranch Sterling County, Texas

    E-Print Network [OSTI]

    Trail, Justin Neil

    1996-01-01T23:59:59.000Z

    ). The major soils are sandy loams, loams, clay loams, deep clays, shallow clays, and very shallow clays over limestone hills. The vegetation is a mixture of the Edwards Plateau ecoregion to the south and the Rolling Plains ecoregion to the north. The original...

  9. The effect of sulfur, magnesium, and various rates of potassium on forage production in some sandy soils of East Texas

    E-Print Network [OSTI]

    Landua, Dennis Paul

    1969-01-01T23:59:59.000Z

    in most of these soils. In a field experiment on Lakeland sand, ryegrass responded to applications of sulfur, but not to potassium or maqnesium, Soil profile analyses indicate that appli- cations of potassium caused magnesium to be displaced downward... the exchangeable potassium and magnesium in a Lakeland fine sand 4 Distribution of potassium, magnesium, and sulfate in a Lakeland fine sand. 48 Effect of fertilizer treatments on total yield of Coastal bermudagrass grown in the field in 1968. . 51 10 Effect...

  10. Fertilizer Experiments with Cotton.

    E-Print Network [OSTI]

    Reynolds, E. B. (Elbert Brunner)

    1932-01-01T23:59:59.000Z

    of plant food is suggested for cotton on these soils. TI Prai the pou1 t,iliz clay TI he Lake Charles clay, an extensive soil in the Gulf Coast irie, is markedly deficient in phosphoric acid, as indicated hy results obtained on this soil... to applications of phosphoric acid and of potash than to appli- cations of nitrogen. The 4-12-4 and 0-12-4 fertilizers used at the rate of 400 pounds per acre were the most profitable treatments on this soil. The dark-colored Goliad fine sandy clay loam...

  11. Silvicultural practices and tree squirrels (Sciurus L.) in East Texas

    E-Print Network [OSTI]

    Hedrick, Larry Dean

    1973-01-01T23:59:59.000Z

    happened to occur near an upland stream or valley, or in the flatwoods, it was given a high rating. Those plots supporting stands of shortleaf pine mixed with southern red oak and sweetgum were given a low rating as to vegetation. A medium rating... Topography Low fine sands shortleaf-sweetgum hill top Medium loamy sands loblolly-white oak hill side High sandy loams loblolly-water oak valley or flatwoods then summed to provide an index for each plot. The maximum index figure is 9 and the smallest 3...

  12. Estimation of ammonia volatilization from surface-applied urea as indicated by bermudagrass N-use efficiency 

    E-Print Network [OSTI]

    Drwal, John Matthew

    1986-01-01T23:59:59.000Z

    contrasting physical and chemical characteristics; an acid Lufkin fine sandy loam, and a calcareous Ships clay. A treatment of urea amended with CaC1& in solution form was also applied to determine if CaC12 inhibited NH3 loss, as other researchers have... in 1984 and 8 in 1985) . 31 Dry matter yield of Coastal bermudagrass on Ships soil as affected by N source (100 kg N ha ). Values are the means of multiple experiments (6 in 1984 and 6 in 1985) . . . . . . . . . . . . . . ~ ~ 33 Dry matter yield of S...

  13. active fine particulates: Topics by E-print Network

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

    Sciences and Ecology Websites Summary: Effects of Sampling Conditions on the Size Distribution of Fine Particulate Matter Emitted from complex because the dilution...

  14. airborne fine particulate: Topics by E-print Network

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

    Sciences and Ecology Websites Summary: Effects of Sampling Conditions on the Size Distribution of Fine Particulate Matter Emitted from complex because the dilution...

  15. ambient fine particulate: Topics by E-print Network

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

    Sciences and Ecology Websites Summary: Effects of Sampling Conditions on the Size Distribution of Fine Particulate Matter Emitted from complex because the dilution...

  16. Helium fine structure theory for determination of Krzysztof Pachucki

    E-Print Network [OSTI]

    Pachucki, Krzysztof

    Helium fine structure theory for determination of Krzysztof Pachucki Institute of Theoretical in the calculation of helium fine-structure splitting of the 23 PJ states, based on the quantum electrodynamic theory by comparison with all experimental results for light helium-like ions and with the known large nuclear charge

  17. Improved fluid bed combustor efficiencies through fines recycle

    SciTech Connect (OSTI)

    Rickman, W.S.

    1980-04-01T23:59:59.000Z

    Carbon burnup efficiencies of 99.9% and higher have been attained on a 0.4-MW(t) atmospheric fluid bed combustor with fines recycle. A cyclone and sintered metal filter system separated the fines from the off-gas stream, returning them at 600/sup 0/C (1150/sup 0/F) to the fluid bed. The fines were metered through a unique rotary valve that also served as a pressure boundary between the fluid bed and the fines recycle hopper. Combustor operation was fully automated with a 100-channel process controller and supervisory computer. This high combustion efficiency is especially significant, since the fuel was graphite sized to less than 5 mm (1.3 in.) maximum size. More than 30% of the feed was fine enough to be quickly entrained, placing a substantial burden on the fines recycle system. Detailed modeling techniques were successfully developed to allow prediction of recycle rates and temperatures needed to maintain high combustion efficiency. This model has now been used to analyze coal combustion tests sponsored by Electric Power Research Institute. Surface reaction rate constants were first determined using combustor data taken during cold, low-flow fines recycle tests. These were then used to predict the effect of higher rates of recycle at various temperatures.

  18. A Finely-Predicted Higgs Boson Mass from A Finely-Tuned Weak Scale

    E-Print Network [OSTI]

    Lawrence J. Hall; Yasunori Nomura

    2009-10-19T23:59:59.000Z

    If supersymmetry is broken directly to the Standard Model at energies not very far from the unified scale, the Higgs boson mass lies in the range 128-141 GeV. The end points of this range are tightly determined. Theories with the Higgs boson dominantly in a single supermultiplet predict a mass at the upper edge, (141 \\pm 2) GeV, with the uncertainty dominated by the experimental errors on the top quark mass and the QCD coupling. This edge prediction is remarkably insensitive to the supersymmetry breaking scale and to supersymmetric threshold corrections so that, in a wide class of theories, the theoretical uncertainties are at the level of \\pm 0.4 GeV. A reduction in the uncertainties from the top quark mass and QCD coupling to the level of \\pm 0.3 GeV may be possible at future colliders, increasing the accuracy of the confrontation with theory from 1.4% to 0.4%. Verification of this prediction would provide strong evidence for supersymmetry, broken at a very high scale of ~ 10^{14 \\pm 2} GeV, and also for a Higgs boson that is elementary up to this high scale, implying fine-tuning of the Higgs mass parameter by ~ 20-28 orders of magnitude. Currently, the only known explanation for such fine-tuning is the multiverse.

  19. The influence of range site on diet selection, nutrient intake, and grazing behavior of cattle

    E-Print Network [OSTI]

    Mastel, Karen Lynn

    1987-01-01T23:59:59.000Z

    . , North Dakota State University Chair of Advisory Committee: Dr. Jerry W. Stuth A sandy loam and a clay loam range site were compared in four, seasonal, graze-out trials on the Rio Grande Plains Experimental Ranch near Spoffard, Texas. Diet samples... time searching, steps between FS, FS duration, and biting rate at a FS were caluculated. The clay loam site produced nearly twice as much herbaceous forage as the sandy loam site, and was composed of a greater proportion of grass while forbs made up...

  20. Influence of 8-Oxoguanosine on the Fine Structure of DNA Studied...

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

    8-Oxoguanosine on the Fine Structure of DNA Studied with Biasing-Potential Replica Exchange Simulations. Influence of 8-Oxoguanosine on the Fine Structure of DNA Studied with...

  1. Bachelor of Fine Arts Lindsey Michelle Allen, Art

    E-Print Network [OSTI]

    Gering, Jon C.

    Bachelor of Fine Arts Lindsey Michelle Allen, Art Todd Christopher Baran, Art Mindy Lynnette Bryant Emily Dian Buford, Psychology Brennen Gail Bushnell, English Andrea Jeanne Calvin, English Erica Marie

  2. AQUEOUS BIPHASE EXTRACTION FOR PROCESSING OF FINE COAL

    SciTech Connect (OSTI)

    K. Osseo-Asare; X. Zeng

    2002-01-01T23:59:59.000Z

    The objective of this research project is to develop an aqueous biphase extraction process for the treatment of fine coals. Aqueous biphase extraction is an advanced separation technology that relies on the ability of an aqueous system consisting of a water-soluble polymer and another component, e.g., another polymer, an inorganic salt, or a nonionic surfactant, to separate into two immiscible aqueous phases. The principle behind the partition of solid particles in aqueous biphase systems is the physicochemical interaction between the solid surface and the surrounding liquid solution. In order to remove sulfur and mineral matter from fine coal with aqueous biphasic extraction, it is necessary to know the partitioning behavior of coal, as well as the inorganic mineral components. Therefore, in this research emphasis was placed on the partitioning behavior of fine coal particles as well as model fine inorganic particles in aqueous biphase systems.

  3. FINE VARIATION AND FRACTAL MEASURES G. A. Edgar

    E-Print Network [OSTI]

    Edgar, Gerald

    FINE VARIATION AND FRACTAL MEASURES G. A. Edgar The Ohio State University revised October, 1994. EDGAR density results are proved for this setting. This paper may be considered a counter­ part of [7

  4. MICROSTRUCTURE AND PROPERTIES OF DUAL PHASE STEELS CONTAINING FINE PRECIPITATES

    E-Print Network [OSTI]

    Gau, J.S.

    2014-01-01T23:59:59.000Z

    and Properties of Dual-Phase Steels, R. A. Kot and J. W.of Niobium Microalloyed Dual- Phase Steel, MetallurgicalAND PROPERTIES OF DUAL PHASE STEELS CONTAINING FINE

  5. Microsoft Word - Finely_NorthValley_CX.docx

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

    Manager - KEWM-4 Proposed Action: Finely Creek and North Valley Creek property funding Fish and Wildlife Project No. and Contract No.: 2002-003-00, BPA-58888 Categorical Exclusion...

  6. Modified approaches for high pressure filtration of fine clean coal

    SciTech Connect (OSTI)

    Yang, J.; Groppo, J.G.; Parekh, B.K. [Center for Applied Energy Research, Lexington, KY (United States)

    1995-12-31T23:59:59.000Z

    Removal of moisture from fine (minus 28 mesh) clean coal to 20% or lower level is difficult using the conventional vacuum dewatering technique. High pressure filtration technique provides an avenue for obtaining low moisture in fine clean coal. This paper describes a couple of novel approaches for dewatering of fine clean coal using pressure filtration which provides much lower moisture in fine clean coal than that obtained using conventional pressure filter. The approaches involve (a) split stream dewatering and (b) addition of paper pulp to the coal slurry. For Pittsburgh No. 8 coal slurry, split stream dewatering at 400 mesh provided filter cake containing 12.9% moisture compared to 24.9% obtained on the feed material. The addition of paper pulp to the slurry provided filter cake containing about 17% moisture.

  7. Deadlock-free fine-grained thread migration

    E-Print Network [OSTI]

    Cho, Myong Hyon

    Several recent studies have proposed fine-grained, hardware-level thread migration in multicores as a solution to power, reliability, and memory coherence problems. The need for fast thread migration has been well documented, ...

  8. Ecology of Juvenile Salmonids in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2007 Annual Report.

    SciTech Connect (OSTI)

    Sobocinski, Kathryn; Johnson, Gary; Sather, Nichole [Pacific Northwest National Laboratory

    2008-03-17T23:59:59.000Z

    This document is the first annual report for the study titled 'Ecology of Juvenile Salmonids in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta in the Lower Columbia River'. Hereafter, we refer to this research as the Tidal Freshwater Monitoring (TFM) Study. The study is part of the research, monitoring, and evaluation effort developed by the Action Agencies (Bonneville Power Administration, U.S. Army Corps of Engineers, U.S. Bureau of Reclamation) in response to obligations arising from the Endangered Species Act as a result of operation of the Federal Columbia River Power System (FCRPS). The project is performed under the auspices of the Northwest Power and Conservation Council's Columbia Basin Fish and Wildlife Program. The goal of the 2007-2009 Tidal Freshwater Monitoring Study is to answer the following questions: In what types of habitats within the tidal freshwater area of the lower Columbia River and estuary (LCRE; Figure 1) are yearling and subyearling salmonids found, when are they present, and under what environmental conditions?1 And, what is the ecological importance2 of shallow (0-5 m) tidal freshwater habitats to the recovery of Upper Columbia River spring Chinook salmon and steelhead and Snake River fall Chinook salmon? Research in 2007 focused mainly on the first question, with fish stock identification data providing some indication of Chinook salmon presence at the variety of habitat types sampled. The objectives and sub-objectives for the 2007 study were as follows: (1) Habitat and Fish Community Characteristics-Provide basic data on habitat and fish community characteristics for yearling and subyearling salmonids at selected sites in the tidal freshwater reach in the vicinity of the Sandy River delta. (1a) Characterize vegetation assemblage percent cover, conventional water quality, substrate composition, and beach slope at each of six sampling sites in various tidal freshwater habitat types. (1b) Determine fish community characteristics, including species composition, abundance, and temporal and spatial distributions. (1c) Estimate the stock of origin for the yearling and subyearling Chinook salmon captured at the sampling sites using genetic analysis. (1d) Statistically assess the relationship between salmonid abundance and habitat parameters, including ancillary variables such as temperature and river stage. (2) Acoustic Telemetry Monitoring-Assess feasibility of applying Juvenile Salmon Acoustic Telemetry System (JSATS) technology to determine migration characteristics from upriver of Bonneville Dam through the study area (vicinity of the Sandy River delta/Washougal River confluence). (2a) Determine species composition, release locations, and distributions of JSATS-tagged fish. (2b) Estimate run timing, residence times, and migration pathways for these fish. Additionally, both objectives serve the purpose of baseline research for a potential tidal rechannelization project on the Sandy River. The U.S. Forest Service, in partnership with the Bonneville Power Administration and the U.S. Army Corps of Engineers, is currently pursuing reconnection of the east (relict) Sandy River channel with the current channel to improve fish and wildlife habitat in the Sandy River delta. Our study design and the location of sampling sites in this reach provide baseline data to evaluate the potential restoration.

  9. Fine particulate chemical composition and light extinction at Meadview, AZ

    SciTech Connect (OSTI)

    Delbert J. Eatough; Wenxuan Cui; Jeffery Hull; Robert J. Farber [Brigham Young University, Provo, UT (United States). Department of Chemistry and Biochemistry

    2006-12-15T23:59:59.000Z

    The concentration of fine particulate nitrate, sulfate, and carbonaceous material was measured for 12-hr daynight samples using diffusion denuder samplers during the Project Measurement of Haze and Visibility Effects (MOHAVE) July to August 1992 Summer Intensive study at Meadview, AZ, just west of Grand Canyon National Park. Organic material was measured by several techniques. Only the diffusion denuder method measured the semivolatile organic material. Fine particulate sulfate and nitrate (using denuder technology) determined by various groups agreed. Based on the various collocated measurements obtained during the Project MOHAVE study, the precision of the major fine particulate species was {+-} 0.6 {mu}g/m{sup 3} organic material, {+-} 0.3 {mu}g/m{sup 3} ammonium sulfate, and {+-} 0.07 {mu}g/m{sup 3} ammonium nitrate. Fine particulate organic material was the principal particulate contributor to light extinction during the study period, with fine particulate sulfate as the second most important contributor. Particle light extinction was dominated by sulfate and organic material during periods of lowest light extinction. Combination of the extinction data and chemical mass balance analysis of sulfur oxides sources in the region indicate that the major anthropogenic contributors to light extinction were from the Los Angeles, CA, and Las Vegas, NV, urban areas. Mohave Power Project associated secondary sulfate was a negligible contributor to light extinction. 49 refs., 12 figs., 7 tabs.

  10. Recycling of PET bottles as fine aggregate in concrete

    SciTech Connect (OSTI)

    Frigione, Mariaenrica, E-mail: mariaenrica.frigione@unisalento.i [Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce (Italy)

    2010-06-15T23:59:59.000Z

    An attempt to substitute in concrete the 5% by weight of fine aggregate (natural sand) with an equal weight of PET aggregates manufactured from the waste un-washed PET bottles (WPET), is presented. The WPET particles possessed a granulometry similar to that of the substituted sand. Specimens with different cement content and water/cement ratio were manufactured. Rheological characterization on fresh concrete and mechanical tests at the ages of 28 and 365 days were performed on the WPET/concretes as well as on reference concretes containing only natural fine aggregate in order to investigate the influence of the substitution of WPET to the fine aggregate in concrete. It was found that the WPET concretes display similar workability characteristics, compressive strength and splitting tensile strength slightly lower that the reference concrete and a moderately higher ductility.

  11. Lattice complexity and fine graining of symbolic sequence

    E-Print Network [OSTI]

    Da-Guan Ke; Hong Zhang; Qin-Ye Tong

    2008-04-05T23:59:59.000Z

    A new complexity measure named as Lattice Complexity is presented for finite symbolic sequences. This measure is based on the symbolic dynamics of one-dimensional iterative maps and Lempel-Ziv Complexity. To make Lattice Complexity distinguishable from Lempel-Ziv Complexity, an approach called fine-graining process is also proposed. When the control parameter fine-graining order is small enough, the two measures are almost equal. While the order increases, the difference between the two measures becomes more and more significant. Applying Lattice Complexity to logistic map with a proper order, we find that the sequences that are regarded as complex are roughly at the edges of chaotic regions. Further derived properties of the two measures concerning the fine-graining process are also discussed.

  12. Fine structure transitions of C+ in collisions with H2

    E-Print Network [OSTI]

    Chu, Shih-I; Dalgarno, A.

    1975-01-01T23:59:59.000Z

    ://scitation.aip.org/content/aip/journal/jcp/62/10?ver=pdfcov Published by the AIP Publishing Articles you may be interested in ?doublet substate specific investigation of rotational and fine structure transitions in collisions of OH with H2 and D2 J. Chem. Phys. 95, 5763 (1991); 10... for Astrophysics, Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138 (Received 7 November 1974) Close-coupling calculations are described of the cross sections for the fine-structure excitation of C...

  13. Effect of hydrogel particle additives on water-accessible pore structure of sandy soils: A custom pressure plate apparatus and capillary bundle model

    E-Print Network [OSTI]

    Y. Wei; D. J. Durian

    2013-04-30T23:59:59.000Z

    To probe the effects of hydrogel particle additives on the water-accessible pore structure of sandy soils, we introduce a custom pressure plate method in which the volume of water expelled from a wet granular packing is measured as a function of applied pressure. Using a capillary bundle model, we show that the differential change in retained water per pressure increment is directly related to the cumulative cross-sectional area distribution $f(r)$ of the water-accessible pores with radii less than $r$. This is validated by measurements of water expelled from a model sandy soil composed of 2 mm diameter glass beads. In particular, the expelled water is found to depend dramatically on sample height and that analysis using the capillary bundle model gives the same pore size distribution for all samples. The distribution is found to be approximately log-normal, and the total cross-sectional area fraction of the accessible pore space is found to be $f_0=0.34$. We then report on how the pore distribution and total water-accessible area fraction are affected by superabsorbent hydrogel particle additives, uniformly mixed into a fixed-height sample at varying concentrations. Under both fixed volume and free swelling conditions, the total area fraction of water-accessible pore space in a packing decreases exponentially as the gel concentration increases. The size distribution of the pores is significantly modified by the swollen hydrogel particles, such that large pores are clogged while small pores are formed.

  14. 2009 Virginia Polytechnic Institute and State University 2901-1046 Virginia Cooperative Extension programs and employment are open to all, regardless of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, o

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    : Zone: 4 to 9 Light: Partial shade to full sun Moisture: Wet, moist, or dry Soil Type: Sandy, loam. Cultivars of Ginkgo biloba: `Autumn Gold' is a male cultivar with good fall color. `Fastigiata

  15. "NH Big Tree of the Month February 2007" White Pine Pinus Strobus

    E-Print Network [OSTI]

    New Hampshire, University of

    perfect for ship masts. Considered the best masts in the world, they were like gold to the shipbuilders growth that averages about a foot a year. But on optimum sites of sandy loam, with sun, and plenty

  16. Fine tuning of graphene-metal adhesion by surface alloying

    E-Print Network [OSTI]

    Alfè, Dario

    Fine tuning of graphene-metal adhesion by surface alloying D. Alfe`1,2 , M. Pozzo1 , E. Miniussi3 route for governing the interaction between graphene and metal through the selective choice characterization of the properties of graphene on a model PtRu surface alloy on Ru(0001), with a concentration

  17. Science fictions: Comment on Godfrey-Smith Arthur Fine

    E-Print Network [OSTI]

    Fine, Arthur

    Science+Business Media B.V. 2008 Abstract This is a comment on Peter Godfrey-Smith's, ``ModelsScience fictions: Comment on Godfrey-Smith Arthur Fine Published online: 2 December 2008 � Springer in a naturalized and deflationary framework. Keywords Hans Vaihinger Á Models Á Fictions Á Peter Godfrey-Smith Hans

  18. MIXTURES OF FINE-GRAINED MINERALS KAOLINITE AND CARBONATE GRAINS

    E-Print Network [OSTI]

    Palomino, Angelica M.

    MIXTURES OF FINE-GRAINED MINERALS À KAOLINITE AND CARBONATE GRAINS ANGELICA M. PALOMINO 1, *, SUSAN, Georgia 30332-0355, USA Abstract--The behavior of mineral mixtures can be significantly different from properties of the individual minerals, and their ensuing effects on interparticle interactions and fabric

  19. Fine-Grained Power Management Using Process-level Profiling

    E-Print Network [OSTI]

    Shi, Weisong

    . To evaluate energy efficiency, the Green Grid group proposed the definition of power usage effectiveness (PUE between performance and energy consumption, fine-grained methods, such as process- level power management-aware decisions based on these information. In addition, we introduce a power-aware system module called Energy

  20. BFA Handbook THE RuskinSCHOOL OF DRAWING & FINE ART

    E-Print Network [OSTI]

    Oxford, University of

    , giving them a firm understanding of constructing practice and a good grounding in health and safety rulesBFA Handbook 2013-2014 THE RuskinSCHOOL OF DRAWING & FINE ART UNIVERSITY OF OXFORD A working guide to essential facts A set of rules and r An explanation of examination criteria and practice A set of health

  1. Time-Varying Fine-Structure Constant Requires Cosmological Constant

    E-Print Network [OSTI]

    R. W. Kuhne

    1999-08-31T23:59:59.000Z

    Webb et al. presented preliminary evidence for a time-varying fine-structure constant. We show Teller's formula for this variation to be ruled out within the Einstein-de Sitter universe, however, it is compatible with cosmologies which require a large cosmological constant.

  2. My Eyes Are Fine. Why Get an Exam?

    E-Print Network [OSTI]

    ; they might lead you to believe that all you need is new eyeglasses. You can protect your eyesight by having or ophthalmologist will ask about your current and past health, your family's medical history and if you're currentlyMy Eyes Are Fine. Why Get an Exam? By Jonna Jefferis If you're like many people, the idea

  3. Unraveling the Excess Air/Coal Fineness Enigma

    E-Print Network [OSTI]

    Laspe, C. G.

    1983-01-01T23:59:59.000Z

    In the use of powered coal as a boiler fuel, the factors involved in heat loss from unburnt carbon in the ash are but partially understood. More finely pulverized coal particles will result in lower carbon-in-ash losses. On the other hand, the finer...

  4. absorption fine structures: Topics by E-print Network

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

    absorption fine structures First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Photon interference x-ray...

  5. absorption fine structure: Topics by E-print Network

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

    absorption fine structure First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Photon interference x-ray...

  6. ROTARY FILTER FINES TESTING FOR SMALL COLUMN ION EXCHANGE

    SciTech Connect (OSTI)

    Herman, D.

    2011-08-03T23:59:59.000Z

    SRNL was requested to quantify the amount of 'fines passage' through the 0.5 micron membranes currently used for the rotary microfilter (RMF). Testing was also completed to determine if there is any additional benefit to utilizing a 0.1 micron filter to reduce the amount of fines that could pass through the filter. Quantifying of the amount of fines that passed through the two sets of membranes that were tested was accomplished by analyzing the filtrate by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) for titanium. Even with preparations to isolate the titanium, all samples returned results of less than the instrument's detection limit of 0.184 mg/L. Test results show that the 0.5 micron filters produced a significantly higher flux while showing a negligible difference in filtrate clarity measured by turbidity. The first targeted deployment of the RMF is with the Small Column Ion Exchange (SCIX) at the Savannah River Site (SRS). SCIX uses crystalline silicotitanate (CST) to sorb cesium to decontaminate a clarified salt solution. The passage of fine particles through the filter membranes in sufficient quantities has the potential to impact the downstream facilities. To determine the amount of fines passage, a contract was established with SpinTek Filtration to operate a 3-disk pilot scale unit with prototypic filter disk and various feeds and two different filter disk membranes. SpinTek evaluated a set of the baseline 0.5 micron filter disks as well as a set of 0.1 micron filter disks to determine the amount of fine particles that would pass the membrane and to determine the flux each set produced. The membrane on both disk sets is manufactured by the Pall Corporation (PMM 050). Each set of disks was run with three feed combinations: prototypically ground CST, CST plus monosodium titanate (MST), and CST, MST, plus Sludge Batch 6 (SB6) simulant. Throughout the testing, samples of the filtrate were collected, measured for turbidity, and sent back to SRNL for analysis to quantify the amount of fines that passed through the membrane. It should be noted that even though ground CST was tested, it will be transferred to the Defense Waste Processing Facility (DWPF) feed tank and is not expected to require filtration.

  7. TEX-A-SYST: Reducing the Risk of Ground Water Contamination by Improving Livestock Manure Storage and Treatment Facilities

    E-Print Network [OSTI]

    Harris, Bill L.; Hoffman, D.; Mazac Jr., F. J.

    1997-08-29T23:59:59.000Z

    -tight design, stalled according to according to accepted medium-textured soils coarse-textured above ground) accepted engineering engineering standards (silt loam, loam). soils (sands, sandy standards and specifi- and specifications. Not Water table deeper... loam). Water table cations. Properly maintained. than 20 feet. or fractured bed- maintained. rock shallower than 20 feet. Concrete (liquid- Designed and in- Designed and installed Concrete cracked, Concrete cracked, tight design) stalled according...

  8. The mobility of water soluble organic compounds in soils from the land application of petroleum waste sludge

    E-Print Network [OSTI]

    Evans, Gordon Barcus

    1979-01-01T23:59:59.000Z

    of gas oil. Fertilizer effects. The nutrient balance further af- fects deterioration of oil. For instance, petroleum sludges have a high C:N ratio which can serve to limit microbial respiration to well below its potential. Addi- tion of nitrogen... an API oil-water separator sludge. Three soils, Bastrop sandy loam, Nacogdoches clay loam, and Norwood loam, were chosen to be representative of potential disposal sites. A sludge containing 41/ water and 10/ solvent extractable hydrocarbons...

  9. SHORT COMMUNICATION Impact of growing conditions on the competitive ability of

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    indicated that canola and Bromus tectorum were superior competitors in both loam and sandy soils, thus re´ sultats indiquent que le et Bromus tectorum sont de meilleurs concurrents sur les loams et les, canola Camelina sativa (L.) Crantz (gold of pleasure, large seeded false flax), a proposed biofuel

  10. Fine Tuning for Best-Value Super ESPC Deals Using the Responsibility...

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

    Fine Tuning for Best-Value Super ESPC Deals Using the Responsibility Matrix Fine Tuning for Best-Value Super ESPC Deals Using the Responsibility Matrix Fact sheet outlines the...

  11. Stop on Top: SUSY Parameter Regions, Fine-Tuning Constraints

    E-Print Network [OSTI]

    Demir, Durmus Ali

    2014-01-01T23:59:59.000Z

    We analyze common supersymmetric models in order to determine in what parameter regions with what amount of fine-tuning they are capable of accomodating the LHC-allowed top-stop degeneracy window. The stops must be light enough to enable Higgs naturalness yet heavy enough to induce a 125 GeV Higgs boson mass. These two constraints require the two stops to have a large mass splitting. We find that, compared to the usual neutralino-LSP CMSSM, the NUHM and gravitino-LSP CMSSM models possess relatively wide regions in which the light stop weighs close to the top quark. The fine-tuning involved lies in 10^3-10^4 range.

  12. Development of an Advanced Fine Coal Suspension Dewatering Process

    SciTech Connect (OSTI)

    B. K. Parekh; D. P. Patil

    2008-04-30T23:59:59.000Z

    With the advancement in fine coal cleaning technology, recovery of fine coal (minus 28 mesh) has become an attractive route for the U.S. coal industry. The clean coal recovered using the advanced flotation technology i.e. column flotation, contains on average 20% solids and 80% water, with an average particle size of 35 microns. Fine coal slurry is usually dewatered using a vacuum dewatering technique, providing a material with about 25 to 30 percent moisture. The process developed in this project will improve dewatering of fine (0.6mm) coal slurry to less than 20 percent moisture. Thus, thermal drying of dewatered wet coal will be eliminated. This will provide significant energy savings for the coal industry along with some environmental benefits. A 1% increase in recovery of coal and producing a filter cake material of less than 20 % moisture will amount to energy savings of 1900 trillion Btu/yr/unit. In terms of the amount of coal it will be about 0.8% of the total coal being used in the USA for electric power generation. It is difficult to dewater the fine clean coal slurry to about 20% moisture level using the conventional dewatering techniques. The finer the particle, the larger the surface area and thus, it retains large amounts of moisture on the surface. The coal industry has shown some reluctance in using the advanced coal recovery techniques, because of unavailability of an economical dewatering technique which can provide a product containing less than 20% moisture. The U.S.DOE and Industry has identified the dewatering of coal fines as a high priority problem. The goal of the proposed program is to develop and evaluate a novel two stage dewatering process developed at the University of Kentucky, which involves utilization of two forces, namely, vacuum and pressure for dewatering of fine coal slurries. It has been observed that a fine coal filter cake formed under vacuum has a porous structure with water trapped in the capillaries. When this porous cake is subjected to pressure for a short time, the free water present is released from the filter cake. Laboratory studies have shown that depending on the coal type a filter cake containing about 15% moisture could be obtained using the two-stage filtration technique. It was also noted that applying intermittent breaks in vacuum force during cake formation, which disturbed the cake structure, helped in removing moisture from the filter cakes. In this project a novel approach of cleaning coal using column flotation was also developed. With this approach the feed capacity of the column is increased significantly, and the column was also able to recover coarser size coal which usually gets lost in the process. The outcome of the research benefits the coal industry, utility industry, and indirectly the general public. The benefits can be counted in terms of clean energy, cleaner environment, and lower cost power.

  13. Evaluation of hyperbaric filtration for fine coal dewatering. Final report

    SciTech Connect (OSTI)

    Parekh, B.K. [Univ. of Kentucky, Lexington, KY (United States); Hogg, R. [Pennsylvania State Univ., University Park, PA (United States); Fonseca, A. [CONSOL Inc. (United States)

    1996-08-15T23:59:59.000Z

    The main objectives of the project were to investigate the fundamental aspects of particle-liquid interaction in fine coal dewatering, to conduct laboratory and pilot plant studies on the applicability of hyperbaric filter systems and to develop process conditions for dewatering of fine clean coal to less than 20% moisture. The program consisted of three phases, namely Phase 1 -- Model Development, Phase 2 -- Laboratory Studies, Phase 3 -- Pilot Plant Testing. The Pennsylvania State University led efforts in Phase 1, the University of Kentucky in Phase 2, and CONSOL Inc. in Phase 3 of the program. All three organizations were involved in all the three phases of the program. The Pennsylvania State University developed a theoretical model for hyperbaric filtration systems, whereas the University of Kentucky conducted experimental studies to investigate fundamental aspects of particle-liquid interaction and application of high pressure filter in fine coal dewatering. The optimum filtration conditions identified in Phase 1 and 2 were tested in two of the CONSOL Inc. coal preparation plants using an Andritz Ruthner portable hyperbaric filtration unit.

  14. Global Representation of the Fine Structure Constant and its Variation

    E-Print Network [OSTI]

    Michael Edmund Tobar

    2005-02-06T23:59:59.000Z

    The fine structure constant, alpha, is shown to be proportional to the ratio of the quanta of electric and magnetic flux of force of the electron, and provides a new representation, which is global across all unit systems. Consequently, a variation in alpha was shown to manifest due to a differential change in the fraction of the quanta of electric and magnetic flux of force, while a variation in hcross.c was shown to manifest due to the common mode change. The representation is discussed with respect to the running of the fine structure constant at high energies (small distances), and a putative temporal drift. It is shown that the running of the fine structure constant is due to equal components of electric screening (polarization of vacuum) and magnetic anti-screening (magnetization of vacuum), which cause the perceived quanta of electric charge to increase at small distances, while the magnetic flux quanta decreases. This introduces the concept of the bare magnetic flux quanta as well as the bare electric charge. With regards to temporal drift, it is confirmed that it is impossible to determine which fundamental constant is varying if alpha varies.

  15. Stop on Top: SUSY Parameter Regions, Fine-Tuning Constraints

    E-Print Network [OSTI]

    Durmus Ali Demir; Cem Salih Un

    2014-11-18T23:59:59.000Z

    We analyze minimal supersymmetric models in order to determine in what parameter regions with what amount of fine-tuning they are capable of accomodating the LHC-allowed top-stop degeneracy window. The stops must be light enough to enable Higgs naturalness yet heavy enough to induce a 125 GeV Higgs boson mass. These two constraints imply a large mass splitting. By an elaborate scan of the parameter space, we show that stop-on-top scenario requires at least Delta_CMSSM ~ O(10^4) fine-tuning in the CMSSM. By relaxing the CMSSM parameter space with nonuniversal Higgs masses, we find that Delta_NUHM1 ~ O(10^4). The CMSSM with gravitino LSP works slightly better than the NUHM1 model. Compared to all these, the CMSSM with mu<0 and nonuniversal gauginos yield a much smaller fine-tuning Delta_{mu,g} ~ O(100). Our results show that gaugino sector can pave the road towards a more natural stop-on-top scenario.

  16. Ecology of Juvenile Salmonids in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2007

    SciTech Connect (OSTI)

    Sobocinski, Kathryn L.; Johnson, Gary E.; Sather, Nichole K.; Storch, Adam; Jones, Tucker A.; Mallette, Christine; Dawley, Earl M.; Skalski, John R.; Teel, David; Moran, Paul

    2008-03-18T23:59:59.000Z

    This document is the first annual report for the study titled “Ecology of Juvenile Salmonids in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta in the Lower Columbia River.” Hereafter, we refer to this research as the Tidal Freshwater Monitoring (TFM) Study. The study is part of the research, monitoring, and evaluation effort developed by the Action Agencies (Bonneville Power Administration, U.S. Army Corps of Engineers, U.S. Bureau of Reclamation) in response to obligations arising from the Endangered Species Act as a result of operation of the Federal Columbia River Power System (FCRPS). The project is performed under the auspices of the Northwest Power and Conservation Council’s Columbia Basin Fish and Wildlife Program.

  17. Ecology of Juvenile Salmon in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2008 Annual Report.

    SciTech Connect (OSTI)

    Sather, NK; Johnson, GE; Storch, AJ [Pacific Northwest National Laboratory

    2009-07-06T23:59:59.000Z

    The tidal freshwater monitoring (TFM) project reported herein is part of the research, monitoring, and evaluation effort developed by the Action Agencies (Bonneville Power Administration, the U.S. Army Corps of Engineers [USACE], and the U.S. Bureau of Reclamation) in response to obligations arising from the Endangered Species Act (ESA) as a result of operation of the Federal Columbia River Power System. The project is being performed under the auspices of the Northwest Power and Conservation Council's Columbia Basin Fish and Wildlife Program (Project No. 2005-001-00). The research is a collaborative effort among the Pacific Northwest National Laboratory, the Oregon Department of Fish and Wildlife, the National Marine Fisheries Service, and the University of Washington. The overarching goal of the TFM project is to bridge the gap in knowledge between tidal freshwater habitats and the early life history attributes of migrating salmon. The research questions include: In what types of habitats within the tidal freshwater area of the Columbia River are juvenile salmon found, when are they present, and under what environmental conditions? What is the ecological contribution of shallow (0-5 m) tidal freshwater habitats to the recovery of ESA-listed salmon in the Columbia River basin? Field data collection for the TFM project commenced in June 2007 and since then has continued monthly at six to nine sites in the vicinity of the Sandy River delta (river kilometer 192-208). While this report includes summary data spanning the 19-month period of study from June 2007 through December 2008, it highlights sampling conducted during calendar year 2008. Detailed data for calendar year 2007 were reported previously. The 2008 research objectives were as follows: (1) Characterize the vegetation composition and percent cover, conventional water quality, water surface elevation, substrate composition, bathymetry, and beach slope at the study sites within the vicinity of the Sandy River delta. (2) Characterize the fish community and juvenile salmon migration, including species composition, length-frequency distribution, density (number/m{sup 2}), and temporal and spatial distributions in the vicinity of the Sandy River delta in the lower Columbia River and estuary (LCRE). (3) Determine the stock of origin for juvenile Chinook salmon (Oncorhynchus tshawytscha) captured at sampling sites through genetic identification. (4) Characterize the diets of juvenile Chinook and coho (O. kisutch) salmon captured within the study area. (5) Estimate run timing, residence times, and migration pathways for acoustic-tagged fish in the study area. (6) Conduct a baseline evaluation of the potential restoration to reconnect the old Sandy River channel with the delta. (7) Apply fish density data to initiate a design for a juvenile salmon monitoring program for beach habitats within the tidal freshwater segment of the LCRE (river kilometer 56-234).

  18. LI,HOSPEDALES,SONG,GONG: FINE-GRAINED SKETCH-BASED IMAGE RETRIEVAL 1 Fine-Grained Sketch-Based Image Retrieval

    E-Print Network [OSTI]

    Gong, Shaogang

    LI,HOSPEDALES,SONG,GONG: FINE-GRAINED SKETCH-BASED IMAGE RETRIEVAL 1 Fine-Grained Sketch.hospedales@qmul.ac.uk Yi-Zhe Song yizhe.song@qmul.ac.uk Shaogang Gong s.gong@qmul.ac.uk Queen Mary University of London. It may be distributed unchanged freely in print or electronic forms. #12;2 LI,HOSPEDALES,SONG,GONG: FINE

  19. General syllabus for doctoral (third cycle) education in the arts at the University of Gothenburg Fine Arts

    E-Print Network [OSTI]

    Johannesson, Henrik

    and understanding For the degree of Licentiate of the Arts in Fine Arts and the degree of Doctor of the Arts in Fine and skills For the degree of Licentiate of the Arts in Fine Arts and the degree of Doctor of the Arts in Fine and approach For the degree of Licentiate of the Arts in Fine Arts and the degree of Doctor of the Arts in Fine

  20. Chromosomal and morphological variation in Geomys bursarius (Shaw) from Texas and adjacent states with comments on factors influencing distribution

    E-Print Network [OSTI]

    Honeycutt, Rodney Lee

    1978-01-01T23:59:59.000Z

    number of 72 and is intermediate between races E and G (Fig. SB, p. 3O). Soil maps of Burleson County indicate that this contact zone is entirely contained within the Miller-Norwood soil association. This particular association contains soils ranging... occur in sandy loam to sandy clay loam soils. The seven samples occurring in loam soils represent pocket gophers taken from the Miller-Norwood soil association in Burleson County. With the exception of the one sample of chromosomal race G, all...

  1. Topological Quantization in Units of the Fine Structure Constant

    SciTech Connect (OSTI)

    Maciejko, Joseph; /Stanford U., Phys. Dept. /Stanford U., Materials Sci. Dept. /SLAC; Qi, Xiao-Liang; /Station Q, UCSB /Stanford U., Phys. Dept. /Stanford U., Materials Sci. Dept. /SLAC; Drew, H.Dennis; /Maryland U.; Zhang, Shou-Cheng; /Stanford U., Phys. Dept. /Stanford U., Materials Sci. Dept. /SLAC

    2011-11-11T23:59:59.000Z

    Fundamental topological phenomena in condensed matter physics are associated with a quantized electromagnetic response in units of fundamental constants. Recently, it has been predicted theoretically that the time-reversal invariant topological insulator in three dimensions exhibits a topological magnetoelectric effect quantized in units of the fine structure constant {alpha} = e{sup 2}/{h_bar}c. In this Letter, we propose an optical experiment to directly measure this topological quantization phenomenon, independent of material details. Our proposal also provides a way to measure the half-quantized Hall conductances on the two surfaces of the topological insulator independently of each other.

  2. Process for preparing fine grain titanium carbide powder

    DOE Patents [OSTI]

    Janney, M.A.

    1985-03-12T23:59:59.000Z

    A method for preparing finely divided titanium carbide powder in which an organotitanate is reacted with a carbon precursor polymer to provide an admixture of the titanium and the polymer at a molecular level due to a crosslinking reaction between the organotitanate and the polymer. The resulting gel is dried, pyrolyzed to drive off volatile components and provide carbon. The resulting solids are then heated at an elevated temperature to convert the titanium and carbon to high-purity titanium carbide powder in a submicron size range.

  3. Fine structure of coupled optical modes in photonic molecules

    SciTech Connect (OSTI)

    Rakovich, Y.P.; Donegan, J.F.; Gerlach, M.; Bradley, A.L. [Semiconductor Photonics Group, Department of Physics, Trinity College, Dublin 2 (Ireland); Connolly, T.M.; Boland, J.J. [Department of Chemistry, Trinity College, Dublin 2 (Ireland); Gaponik, N. [Institute of Physical Chemistry, University of Hamburg, 20146 Hamburg (Germany); Rogach, A. [Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians Universitaet Muenchen, 80799 Munich (Germany)

    2004-11-01T23:59:59.000Z

    We report on the coherent coupling of whispering gallery modes (WGM) in a photonic molecule formed from two melamine-formaldehyde spherical microcavities with a thin shell of CdTe nanocrystals. Utilizing a microporous polymer structure to orient the photonic molecule, we have excited the photonic molecule both on and off axis. This controllable geometry has allowed the observation of an off-axis fine structure that consists of very sharp peaks resulting from the removal of the WGM degeneracy with respect to the azimuthal quantum number m. The mode splittings are in very good agreement with theory.

  4. Fine-structure constant constraints on Bekenstein-type models

    E-Print Network [OSTI]

    P. M. M. Leal; C. J. A. P. Martins; L. B. Ventura

    2014-07-15T23:59:59.000Z

    Astrophysical tests of the stability of dimensionless fundamental couplings, such as the fine-structure constant $\\alpha$, are an area of much increased recent activity, following some indications of possible spacetime variations at the few parts per million level. Here we obtain updated constraints on the Bekenstein-Sandvik-Barrow-Magueijo model, which is arguably the simplest model allowing for $\\alpha$ variations. Recent accurate spectroscopic measurements allow us to improve previous constraints by about an order of magnitude. We briefly comment on the dependence of the results on the data sample, as well as on the improvements expected from future facilities.

  5. Radial distribution function in x-ray-absorption fine structure

    SciTech Connect (OSTI)

    Stern, E.A.; Ma, Y.; Hanske-Petitpierre, O. (Department of Physics FM-15, University of Washington, Seattle, Washington 98195 (United States)); Bouldin, C.E. (National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States))

    1992-07-01T23:59:59.000Z

    It has been argued that, in systems that have disorder too large to be described by a Gaussian, x-ray-absorption fine-structure (XAFS) spectroscopy alone cannot define the radial distribution function (RDF) because of the lack of low-{ital k} data. We show that the low-{ital k} data can, under certain conditions, be reconstructed using cumulant expansions, which give the correct functional form. This allows XAFS to determine unbiased single-shell RDF's in cases of moderate disorder, without assuming a particular model for the RDF. Some examples are given to illustrate the technique and its limitations.

  6. Fine, New York: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump to:ar-80m.pdfFillmore County, Minnesota: EnergyFinanzasFine, New York:

  7. Hydrogen Atom and Time Variation of Fine-Structure Constant

    E-Print Network [OSTI]

    Mu-Lin Yan

    2009-11-21T23:59:59.000Z

    In this paper, we have solved the de Sitter special relativistic ($\\mathcal{SR}_{cR}$-) Dirac equation of hydrogen in the earth-QSO(quasar) framework reference by means of the adiabatic approach. The aspects of geometry effects of de Sitter space-time described by Beltrami metric are explored and taken into account. It is found that the $\\mathcal{SR}_{cR}$-Dirac equation of hydrogen is a time dependent quantum Hamiltonian system. We provide an explicit calculation to justify the adiabatic approach in dealing with this time-dependent system. Since the radius of de Sitter sphere $R$ is cosmologically large, the evolution of the system is very slow so that the adiabatic approximation legitimately works with high accuracy. We conclude that the electromagnetic fine-structure constant, the electron mass and the Planck constant are time variations. This prediction of fine-structure constant is consistent with the presently available observation data. For confirming it further, experiments/observations are required.

  8. Solar Radio Bursts with Spectral Fine Structures in Preflares

    E-Print Network [OSTI]

    Zhang, Yin; Karlický, Marian; Mészárosová, Hana; Huang, Jing; Tan, Chengming; Simões, Paulo

    2014-01-01T23:59:59.000Z

    A good observation of preflare activities is important for us to understand the origin and triggering mechanism of solar flares, and to predict the occurrence of solar flares. This work presents the characteristics of microwave spectral fine structures as preflare activities of four solar flares observed by Ond\\v{r}ejov radio spectrograph in the frequency range of 0.8--2.0 GHz. We found that these microwave bursts which occurred 1--4 minutes before the onset of flares have spectral fine structures with relatively weak intensities and very short timescales. They include microwave quasi-periodic pulsations (QPP) with very short period of 0.1-0.3 s and dot bursts with millisecond timescales and narrow frequency bandwidths. Accompanying these microwave bursts, there are filament motions, plasma ejection or loop brightening on the EUV imaging observations and non-thermal hard X-ray emission enhancements observed by RHESSI. These facts may reveal certain independent non-thermal energy releasing processes and partic...

  9. Recovery of coal fines from preparation plant effluents

    SciTech Connect (OSTI)

    Choudhry, V. (Praxis Engineers, Inc., Milpitas, CA (USA)); Khan, L. (Illinois State Geological Survey, Champaign, IL (USA)); Yang, D. (Michigan Technological Univ., Houghton, MI (USA))

    1990-01-01T23:59:59.000Z

    The objectives of this project are to test and demonstrate the feasibility of recovering the coal fines which are currently disposed of with plant effluent streams in order to produce a fine clean coal product. This product can then be blended with the coarse clean coal from the preparation plant. Recovery of carbonaceous material from the effluent streams will be effected by means of Michigan Technological University's static tube flotation process in conjunction with pyrite depressants. This process has been successfully demonstrated on a number of coals to reject 85% of the pyritic sulfur and recover 90% of the Btu value. The process parameters will be modified to accept preparation plant effluents in order to produce a low-ash, low-sulfur clean coal product that at a minimum is compatible with the quality requirements of the plant clean coal. This report covers the first quarter of the project. The main activities during this period were the drafting of a project work plan and the collection of four coal preparation plant effluent samples for testing. Effluent slurry samples were collected from four operating preparation plants in Illinois and shipped to Michigan Technological University for experimental work.

  10. Effects of defoliation frequency and intensity on production of four burned and unburned bushed grassland communities in south central Kenya

    E-Print Network [OSTI]

    Too, Daniel Kipkoech

    1985-01-01T23:59:59.000Z

    Esti- mated bush/tree cover of the exclosure was less than 3%. The top 30 cm of soil is firm dark reddish sandy clay loam. Below this level the soil turns reddish brown sandy clay. Gravel and rock occur at 120 cm and below. Runoff is minimal because...

  11. Influence of Overwatering and Fertilization on Nitrogen Losses from Home Lawns T. G. MORTON, A. J. GOLD,* AND W. M. SULLIVAN

    E-Print Network [OSTI]

    Gold, Art

    . GOLD,* AND W. M. SULLIVAN ABSTRACT Fertilized home lawns represent a potential source of NO,-N con sandy loam (sandy, mixed, mesic Typic Dystrochrept). Soil-water per- colate was collected by suction water standard of 10 mg L" (USEPA, 1976). Leaching of NO3 is of particular T.G. Morton and A.J. Gold

  12. Fine-structure constant constraints on dark energy

    E-Print Network [OSTI]

    Martins, C J A P

    2015-01-01T23:59:59.000Z

    We use astrophysical and atomic clock tests of the stability of the fine-structure constant $\\alpha$, together with Type Ia supernova and Hubble parameter data, to constrain the simplest class of dynamical dark energy models where the same degree of freedom is assumed to provide both the dark energy and (through a dimensionless coupling, $\\zeta$, to the electromagnetic sector) the $\\alpha$ variation. We show how current data tightly constrains a combination of $\\zeta$ and the dark energy equation of state $w_0$. At the $95\\%$ confidence level and marginalizing over $w_0$ we find $|\\zeta|<5\\times10^{-6}$, with the atomic clock tests dominating the constraints. The forthcoming generation of high-resolution ultra-stable spectrographs will enable significantly tighter constraints.

  13. Programmable Differential Delay Circuit With Fine Delay Adjustment

    DOE Patents [OSTI]

    DeRyckere, John F. (Eau Claire, WI); Jenkins, Philip Nord (Eau Claire, WI); Cornett, Frank Nolan (Chippewa Falls, WI)

    2002-07-09T23:59:59.000Z

    Circuitry that provides additional delay to early arriving signals such that all data signals arrive at a receiving latch with same path delay. The delay of a forwarded clock reference is also controlled such that the capturing clock edge will be optimally positioned near quadrature (depending on latch setup/hold requirements). The circuitry continuously adapts to data and clock path delay changes and digital filtering of phase measurements reduce errors brought on by jittering data edges. The circuitry utilizes only the minimum amount of delay necessary to achieve objective thereby limiting any unintended jitter. Particularly, this programmable differential delay circuit with fine delay adjustment is designed to allow the skew between ASICS to be minimized. This includes skew between data bits, between data bits and clocks as well as minimizing the overall skew in a channel between ASICS.

  14. $f(T)$ Theories and Varying Fine Structure Constant

    E-Print Network [OSTI]

    Wei, Hao; Qi, Hao-Yu

    2011-01-01T23:59:59.000Z

    In analogy to $f(R)$ theory, recently $f(T)$ theory has been proposed to drive the current accelerated expansion without invoking dark energy. In the literature, the observational constraints on $f(T)$ theories were obtained mainly by using the cosmological data, such as type Ia supernovae (SNIa), baryon acoustic oscillation (BAO), and cosmic microwave background radiation (CMB). In this work, we instead try to constrain $f(T)$ theories with the varying fine structure "constant", $\\alpha\\equiv e^2/\\hbar c$. We find that the constraints on $f(T)$ theories from the observational $\\Delta\\alpha/\\alpha$ data are very severe. In fact, they make $f(T)$ theories almost indistinguishable from $\\Lambda$CDM model.

  15. DEVELOPMENT OF A NOVEL FINE COAL CLEANING SYSTEM

    SciTech Connect (OSTI)

    Manoj K. Mohanty

    2005-06-01T23:59:59.000Z

    The goal of the proposed project was to develop a novel fine coal separator having the ability to clean 1 mm x 0 size coal in a single processing unit. The novel fine coal separator, named as EG(Enhanced Gravity) Float Cell, utilizes a centrifugal field to clean 1 mm x 250 micron size coal, whereas a flotation environment to clean minus 250 micron coal size fraction. Unlike a conventional enhanced gravity concentrator, which rotates to produce a centrifugal field requiring more energy, the EG Float Cell is fed with a tangential feed slurry to generate an enhanced gravity field without any rotating part. A prototype EG Float Cell unit having a maximum diameter of 60 cm (24 inch) was fabricated during the first-half of the project period followed by a series of exploratory tests to make suitable design modification. Test data indicated that there was a significant concentration of coarse heavy materials in the coarse tailings discharge of the EG Float Cell. The increase in weight (%) of 1 mm x 250 micron (16 x 60 mesh) size fraction from 48.9% in the feed to 72.2% in the coarse tailings discharge and the corresponding increase in the ash content from 56.9% to 87.0% is indicative of the effectiveness of the enhanced gravity section of the EG Float Cell. However, the performance of the flotation section needs to be improved. Some of the possible design modifications may include more effective air sparging system for the flotation section to produce finer bubbles and a better wash water distributor.

  16. (Recovery of coal fines from preparation plant effluents)

    SciTech Connect (OSTI)

    Choudhry, V. (Praxis Engineers, Inc., Milpitas, CA (USA)); Khan, L. (Illinois State Geological Survey, Champaign, IL (USA)); Yang, D. (Michigan Technological Univ., Houghton, MI (USA))

    1991-01-01T23:59:59.000Z

    The objectives of this project are to test and demonstrate the feasibility of recovering coal fines which are currently disposed of with plant effluent streams, in order to produce a fine clean coal product. This product can then be blended with the coarse clean coal from the preparation plant. Recovery of coal from the effluent stream samples will be effected by means of Michigan Technological University's static tube flotation process. This process has been successfully demonstrated on a number of raw coals to reject 85% of the pyritic sulfur and recover 90% of the combustible matter. The process parameters will be modified so that this technology can be applied to preparation plant effluents in order to recover a low-ash, low-sulfur clean coal that is, at a minimum, compatible with the quality of the clean coal currently produced from the preparation plant. The main activities during this period were setting up the static tube test unit to conduct the experimental work as outlined in the project work plan. The first of four effluent slurry samples collected from four operating Illinois preparation plants was tested at Michigan Technological University. The first batch of tests resulted in a clean coal containing 7.5% ash at 94.5% combustible matter recovery. Another test aimed at lowering the ash further analyzed at 3.0% ash and 0.92% total sulfur. In addition, analyses of particle size distribution and sink-float testing of the +200 mesh material were undertaken as a part of the effluent characterization work. 5 tabs.

  17. Sweet Potato Fertilizer Experiments at Substation No. 2, Troup. 

    E-Print Network [OSTI]

    Hotchkiss, W. S.

    1921-01-01T23:59:59.000Z

    . S ." - .- .d 3 %" +J a gP U $ 3.89 5.74 2.25 6.00 4.93 - 5.75 9.14 7.59 A -- s 0 d 2-2 " a,. z'," c* o a.5 225 ;:CU f3 ........ 50.4 43.2 3.4 72.0 41.9 - 54.6 57.9 70.8' oa Ow* '. ka' #g,. i zg:: gb ................ $ 37..., in 1907, 1908, and 11, was 17.?'0, 28.66, and 10.74 inches, respectively. The soils on which these experiments were conducted are classed by 3 Bureau of Soils as Susquehanna fine sandy loam. This soil is tyish in color with a red plastic clay subsoil...

  18. Effects of mining on fine sediment quality; a comparison with regional metal background

    E-Print Network [OSTI]

    Northern British Columbia, University of

    Effects of mining on fine sediment quality; a comparison with regional metal background University Date March 2, 2011 #12;2 Abstract The impact of an abandoned hydraulic gold mine and an open cast copper-gold mine on the quality of fine-grained sediment (

  19. Influence of recycled fine aggregates on the resistance of mortars to magnesium sulfate attack

    SciTech Connect (OSTI)

    Lee, Seung-Tae [Department of Civil Engineering, Kunsan National University, 68 Miryong-dong, Kunsan, Jeonbuk 573-701 (Korea, Republic of)], E-mail: stlee@kunsan.ac.kr

    2009-08-15T23:59:59.000Z

    The influence of recycled fine aggregates, which had been reclaimed from field-demolished concretes, on the resistance of mortar specimens to magnesium sulfate attack was investigated. Mortar specimens were prepared with recycled fine aggregates at different replacement levels (0%, 25%, 50%, 75% and 100% of natural fine aggregate by mass). The mortar specimens were exposed to 4.24% magnesium sulfate solution for about 1 year at ambient temperature, and regularly monitored for visual appearance, compressive strength loss and expansion. Additionally, in order to identify products of magnesium sulfate attack, mortar samples incorporating 0%, 25% and 100% replacement levels of the recycled fine aggregates were examined by X-ray diffraction (XRD) technique. Experimental results confirmed that the use of recycled fine aggregates up to a maximum 50% replacement level is effective under severe magnesium sulfate environment, irrespective of type of recycled fine aggregates. However, the worse performance was observed in mortar specimens incorporating 100% replacement level. It was found that the water absorption of recycled fine aggregates affected deterioration of mortar specimens, especially at a higher replacement level. XRD results indicated that the main cause of deterioration of the mortar specimens was primarily due to the formation of gypsum and thaumasite by magnesium sulfate attack. In addition, it appeared that the conversion of C-S-H into M-S-H by the attack probably influenced mechanical deterioration of mortar specimens with recycled fine aggregates.

  20. Hayaku: Designing and Optimizing Finely Tuned and Portable Interactive Graphics with a Graphical Compiler

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hayaku: Designing and Optimizing Finely Tuned and Portable Interactive Graphics with a Graphical, France stephane.conversy@enac.fr ABSTRACT Although reactive and graphically rich interfaces are now that supports de- signing finely tuned interactive graphics. With Hayaku, a designer can abstract graphics

  1. Fine-Scale Zonal Flow Suppression of Electron Temperature Gradient Turbulence

    E-Print Network [OSTI]

    Lin, Zhihong

    as an explanation for the long time build up of the zonal flow in ETG turbulence and it is shown that the generationFine-Scale Zonal Flow Suppression of Electron Temperature Gradient Turbulence S.E. Parker , J continue to grow algebraically (proportional to time). These fine-scale zonal flows have a radial wave

  2. Real-time, Photo-realistic, Physically Based Rendering of Fine Scale Human Skin Structure

    E-Print Network [OSTI]

    Haro, Antonio

    structure samples, build models of fine scale structure production, and then render this detail usingReal-time, Photo-realistic, Physically Based Rendering of Fine Scale Human Skin Structure Antonio, which is clearly visible in close-up shots in a film or game. Methods that rely on simple texture

  3. Fine structure of helium and light helium-like ions Krzysztof Pachucki and Vladimir A. Yerokhin

    E-Print Network [OSTI]

    Pachucki, Krzysztof

    1 Fine structure of helium and light helium-like ions Krzysztof Pachucki and Vladimir A. Yerokhin Abstract: Calculational results are presented for the fine-structure splitting of the 23 P state of helium and helium-like ions with the nuclear charge Z up to 10. Theoretical predictions are in agreement

  4. HEP/123-qed Fine structure of alpha decay in odd nuclei

    E-Print Network [OSTI]

    M. Mirea

    2000-01-01T23:59:59.000Z

    Using an ? decay level scheme, the fine structure in odd nuclei is explained by taking into account the radial and rotational couplings between the unpaired valence nucleon and the core of the decaying system. It is shown that the experimental behavior of the ? decay fine structure phenomenon is governed by the dynamical characteristics of the system.

  5. Physically based model of downstream fining in bedrock streams with lateral input

    E-Print Network [OSTI]

    Lajeunesse, Eric

    Click Here for Full Article Physically based model of downstream fining in bedrock streams not show a clear, monotonic pattern of size reduction in the downstream direction. Both abrasion and selective sorting may play important roles in generating downstream fining. The objective of this study

  6. Influence of fine particles on the stability of a humid granular pile

    E-Print Network [OSTI]

    Xixi Huang; Sandrine Bec; J. Colombani

    2014-12-02T23:59:59.000Z

    We have investigated by rotating drum experiments the influence of a small amount of fine particles on the stability of a granular heap. The fine particles are shown to have a strong and ambivalent influence. For low fine particle content, the heap destabilizes by avalanches, and the fine particles tend to fluidize the heap. In contrast, for high fine particle content, they increase the cohesion of the heap, which destabilizes through stick-slip at the drum wall. We interpret and model the fluidification in the avalanching regime, which we show is independent of humidity, by granular lubrication considerations, whereas the stick-slip behavior, highly dependent on humidity, is understood by a solid friction model.

  7. Influence of fine particles on the stability of a humid granular pile

    E-Print Network [OSTI]

    Huang, Xixi; Colombani, J

    2014-01-01T23:59:59.000Z

    We have investigated by rotating drum experiments the influence of a small amount of fine particles on the stability of a granular heap. The fine particles are shown to have a strong and ambivalent influence. For low fine particle content, the heap destabilizes by avalanches, and the fine particles tend to fluidize the heap. In contrast, for high fine particle content, they increase the cohesion of the heap, which destabilizes through stick-slip at the drum wall. We interpret and model the fluidification in the avalanching regime, which we show is independent of humidity, by granular lubrication considerations, whereas the stick-slip behavior, highly dependent on humidity, is understood by a solid friction model.

  8. Selecting fines recycle methods to optimize fluid bed combustor performance

    SciTech Connect (OSTI)

    Rickman, W.S.; Fields, D.E.; Brimhall, W.L.; Callahan, S.F.

    1980-05-01T23:59:59.000Z

    Testing and analysis of a number of different fines recycle methods for fluid bed combustors has led to a generalized modeling technique. This model accounts for the effect of pertinent variables in determining overall combustion efficiencies. Computer application of this model has allowed trade-off studies to be performed that show the overall process effects of changes in individual operating parameters. Verification of the model has been accomplished in processing campaigns while combusting fuels such as graphite and bituminous coal. A 0.4 MW test unit was used for the graphite experimental work. Solid fuel was typically crushed to 5 mm maximum screen size. Bed temperatures were normally controlled at 900/sup 0/C; the combustor was an atmospheric unit with maximum in-bed pressures of 0.2 atm. Expanded bed depths ranged from 1.5 to 3 meters. Additional data was taken from recycle tests sponsored by EPRI on the B and W 6 ft x 6 ft fluid bed combustor. These tests used high sulfur coal in a 1.2 meter deep, 850/sup 0/C atmospheric fluidized bed of limestone, with low recycle rates and temperatures. Close agreement between the model and test data has been noted, with combustion efficiency predictions matching experimental results within 1%.

  9. Solder flow over fine line PWB surface finishes

    SciTech Connect (OSTI)

    Hosking, F.M.; Hernandez, C.L.

    1998-08-01T23:59:59.000Z

    The rapid advancement of interconnect technology has stimulated the development of alternative printed wiring board (PWB) surface finishes to enhance the solderability of standard copper and solder-coated surfaces. These new finishes are based on either metallic or organic chemistries. As part of an ongoing solderability study, Sandia National Laboratories has investigated the solder flow behavior of two azole-based organic solderability preservations, immersion Au, immersion Ag, electroless Pd, and electroless Pd/Ni on fine line copper features. The coated substrates were solder tested in the as-fabricated and environmentally-stressed conditions. Samples were processed through an inerted reflow machine. The azole-based coatings generally provided the most effective protection after aging. Thin Pd over Cu yielded the best wetting results of the metallic coatings, with complete dissolution of the Pd overcoat and wetting of the underlying Cu by the flowing solder. Limited wetting was measured on the thicker Pd and Pd over Ni finishes, which were not completely dissolved by the molten solder. The immersion Au and Ag finishes yielded the lowest wetted lengths, respectively. These general differences in solderability were directly attributed to the type of surface finish which the solder came in contact with. The effects of circuit geometry, surface finish, stressing, and solder processing conditions are discussed.

  10. Geometry and continuity of fine-grained reservoir sandstones deformed within an accretionary prism - Basal Unit, West Woodbourne 

    E-Print Network [OSTI]

    Blackman, Ingrid Maria

    2004-09-30T23:59:59.000Z

    The Basal Unit of West Woodbourne Field in Barbados is a 250 m thick succession of finely-interbedded sandstones and mudstones deposited by Paleogene, fine-grained, deep-water systems off the northern South American margin ...

  11. ON THE USE OF EXTENDED X-RAY ABSORPTION FINE STRUCTURE SPECTROSCOPY TO DETERMINE THE BONDING CONFIGURATIONS OF

    E-Print Network [OSTI]

    Sparks, Donald L.

    ON THE USE OF EXTENDED X-RAY ABSORPTION FINE STRUCTURE SPECTROSCOPY TO DETERMINE THE BONDING Rights Reserved #12;ON THE USE OF EXTENDED X-RAY ABSORPTION FINE STRUCTURE SPECTROSCOPY TO DETERMINE

  12. Vitrification testing of soil fines from contaminated Hanford 100 Area and 300 Area soils

    SciTech Connect (OSTI)

    Ludowise, J.D.

    1994-05-01T23:59:59.000Z

    The suitability of Hanford soil for vitrification is well known and has been demonstrated extensively in other work. The tests reported here were carried out to confirm the applicability of vitrification to the soil fines (a subset of the Hanford soil potentially different in composition from the bulk soil) and to provide data on the performance of actual, vitrified soil fines. It was determined that the soil fines were generally similar in composition to the bulk Hanford soil, although the fraction <0.25 mm in the 100 Area soil sample appears to differ somewhat from the bulk soil composition. The soil fines are readily melted into a homogeneous glass with the simple additions of CaO and/or Na{sub 2}O. The vitrified waste (plus additives) occupies only 60% of the volume of the initial untreated waste. Leach testing has shown the glasses made from the soil fines to be very durable relative to natural and man-made glasses and has demonstrated the ability of the vitrified waste to greatly reduce the release of radionuclides to the environment. Viscosity and electrical conductivity measurements indicate that the soil fines will be readily processable, although with levels of additives slightly greater than used in the radioactive melts. These tests demonstrate the applicability of vitrification to the contaminated soil fines and the exceptional performance of the waste form resulting from the vitrification of contaminated Hanford soils.

  13. Quick extended x-ray absorption fine structure instrument with millisecond time scale, optimized for in situ applications

    E-Print Network [OSTI]

    Sparks, Donald L.

    Quick extended x-ray absorption fine structure instrument with millisecond time scale, optimized of quick extended x-ray absorption fine structure QEXAFS and quick x-ray absorption near edge structure- tion spectroscopy XAS was developed in energy dispersive and quick extended x-ray absorption fine

  14. Executive Director & Controller Sandy Burris

    E-Print Network [OSTI]

    Bertini, Robert L.

    Support/Training 2. COGNOS Reporting 3. Document Imaging for UFS 4. IT Support for UFS 5. E-BAR Access

  15. Sandy Updates | Department of 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 DataDepartment of Energy Your Density Isn'tOrigin ofEnergy atLLC - FE DKT. 10-160-LNG -Energy Proposed PenaltyLarge10 DOESandia

  16. Sandy Ridge | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |Rippey Jump to:WY)Project

  17. Sandy Updates | Department of Energy

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergy SmallImplementing J-F-1 SECTION JtheNEWMR.Y : J OProductsPress Release

  18. Low-Cycle Fatigue of Ultra-Fine-Grained Cryomilled 5083 Aluminum Alloy

    E-Print Network [OSTI]

    Walley, J. L.; Lavernia, E. J.; Gibeling, J. C.

    2009-01-01T23:59:59.000Z

    an Ultra-Fine Grained Aluminum Alloy, Poster Session, TMS,with other MA aluminum alloys and is attributed to theGrained Cryomilled 5083 Aluminum Alloy J.L. WALLEY, E.J.

  19. High-strain-rate nanoindentation behavior of fine-grained magnesium alloys

    E-Print Network [OSTI]

    Somekawa, Hidetoshi

    The effects of temperature and alloying elements on deformation in the high-strain-rate regime were investigated by testing fine-grained magnesium alloys with an average grain size of 2 ? 3 ?m by a nanoindentation technique. ...

  20. Fine Tuning for Best-Value Super ESPC Deals Using the Responsibility Matrix

    Broader source: Energy.gov [DOE]

    Fact sheet outlines the steps for Federal agencies to fine tune Super Energy Savings Performance Contracts (ESPCs) to get the best value using the Risk, Responsibility, and Performance Matrix.

  1. THE UNIVERSITY OF OKLAHOMA WEITZENHOFFER COLLEGE OF FINE ARTS In the OU Arts District!

    E-Print Network [OSTI]

    Oklahoma, University of

    THE UNIVERSITY OF OKLAHOMA WEITZENHOFFER COLLEGE OF FINE ARTS University of Oklahoma (405) 325-5321 sbent@ou.edu University Theatre presents Handel's Alcina (Norman, Okla., Feb. 21, 2014) The University of Oklahoma

  2. The consolidation and strength behavior of mechanically compressed fine-grained sediments

    E-Print Network [OSTI]

    Casey, Brendan (Brendan Anthony)

    2014-01-01T23:59:59.000Z

    This thesis investigates the consolidation and shear strength behavior of saturated fine-grained sediments over the effective stress range of 0.1 to 100 MPa. The research makes use of samples which are resedimented in the ...

  3. Low-Cycle Fatigue of Ultra-Fine-Grained Cryomilled 5083 Aluminum Alloy

    E-Print Network [OSTI]

    Walley, J. L.; Lavernia, E. J.; Gibeling, J. C.

    2009-01-01T23:59:59.000Z

    of an Ultra-Fine Grained Aluminum Alloy, Poster Session,Grained Cryomilled 5083 Aluminum Alloy J.L. WALLEY, E.J.consistent with other MA aluminum alloys and is attributed

  4. Number of relevant independent points in x-ray-absorption fine-structure spectra

    SciTech Connect (OSTI)

    Stern, E.A. (Physics Department FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1993-10-01T23:59:59.000Z

    A discussion is given of the amount of information present in x-ray-absorption fine-structure spectra. It is shown that the usual formulations underestimate the degrees of freedom by at least one.

  5. Effect of sediment concentration on artificial well recharge in a fine sand aquifer 

    E-Print Network [OSTI]

    Rahman, Mohammed Ataur

    1968-01-01T23:59:59.000Z

    EFFECT OF SEDIMENT CONCENTRATION ON ARTIFICIAL WELL RECHARGE IN A FINE SAND AQUIFER A Thesis By MD. ATAUR RAHMAN Submitted to the Graduate College of the Texas ASM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 1968 Major Subject: Agricultural Engineering EFFECT OF SEDIMENT CONCENTRATION ON ARTIFICIAL WELL RECHARGE IN A FINE SAND AqUIFER A Thesis By MD. ATAUR RAHMAN Approved as to style and content by: (Chairman of ommitt ) ( a o...

  6. Mechanical Flow Response and Anisotropy of Ultra-Fine Grained Magnesium and Zinc Alloys 

    E-Print Network [OSTI]

    Al Maharbi, Majid H.

    2011-02-22T23:59:59.000Z

    MECHANICAL FLOW RESPONSE AND ANISOTROPY IN ULTRA-FINE GRAINED MAGNESIUM AND ZINC ALLOYS A Dissertation by MAJID AL MAHARBI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2009 Major Subject: Materials Science and Engineering MECHANICAL FLOW RESPONSE AND ANISOTROPY IN ULTRA-FINE GRAINED MAGNESIUM AND ZINC ALLOYS A Dissertation by MAJID AL...

  7. POC-scale testing of an advanced fine coal dewatering equipment/technique

    SciTech Connect (OSTI)

    Groppo, J.G.; Parekh, B.K. [Univ. of Kentucky, Lexington, KY (United States); Rawls, P. [Department of Energy, Pittsburgh, PA (United States)

    1995-11-01T23:59:59.000Z

    Froth flotation technique is an effective and efficient process for recovering of ultra-fine (minus 74 {mu}m) clean coal. Economical dewatering of an ultra-fine clean coal product to a 20 percent level moisture will be an important step in successful implementation of the advanced cleaning processes. This project is a step in the Department of Energy`s program to show that ultra-clean coal could be effectively dewatered to 20 percent or lower moisture using either conventional or advanced dewatering techniques. As the contract title suggests, the main focus of the program is on proof-of-concept testing of a dewatering technique for a fine clean coal product. The coal industry is reluctant to use the advanced fine coal recovery technology due to the non-availability of an economical dewatering process. in fact, in a recent survey conducted by U.S. DOE and Battelle, dewatering of fine clean coal was identified as the number one priority for the coal industry. This project will attempt to demonstrate an efficient and economic fine clean coal slurry dewatering process.

  8. Water use by saltcedar (Tamarix sp.) and associated vegetation on the Canadian, Colorado and Pecos Rivers in Texas

    E-Print Network [OSTI]

    Hays, Kenneth Brian

    2003-01-01T23:59:59.000Z

    . B. Thomas were at full capacity. The study location was approximately 460 m from the river channel. The soils at this location were alluvial deposits and consisted primarily of loams and sandy clay loams. The vegetation at this site consisted... season; however, the flow changed with water releases (for irrigation) from Red Bluff Lake. Water Level Recorder Global Water' (Global Water Instrumentation, Inc. Gold River, Ca. USA) WL14X water level loggers were used to measure hourly water levels...

  9. I/O Router Placement and Fine-Grained Routing on Titan to Support Spider II

    SciTech Connect (OSTI)

    Ezell, Matthew A [ORNL] [ORNL; Dillow, David [None] [None; Oral, H Sarp [ORNL] [ORNL; Wang, Feiyi [ORNL] [ORNL; Tiwari, Devesh [ORNL] [ORNL; Maxwell, Don E [ORNL] [ORNL; Leverman, Dustin B [ORNL] [ORNL; Hill, Jason J [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    The Oak Ridge Leadership Computing Facility (OLCF) introduced the concept of Fine-Grained Routing in 2008 to improve I/O performance between the Jaguar supercomputer and Spider, OLCF s center-wide Lustre file system. Fine-grained routing organizes I/O paths to minimize congestion. Jaguar has since been upgraded to Titan, providing more than a ten-fold improvement in peak performance. To support the center s increased computational capacity and I/O demand, the Spider file system has been replaced with Spider II. Building on the lessons learned from Spider, an improved method for placing LNET routers was developed and implemented for Spider II. The fine-grained routing scripts and configuration have been updated to provide additional optimizations and better match the system setup. This paper presents a brief history of fine-grained routing at OLCF, an introduction to the architectures of Titan and Spider II, methods for placing routers in Titan, and details about the fine-grained routing configuration.

  10. Weed Control Research in Guar in Texas and Oklahoma: 1961-72.

    E-Print Network [OSTI]

    Smith, D. T.; Wiese, A. F.; Santelmann, P. W.

    1973-01-01T23:59:59.000Z

    . / acre) 1967 1969 1971 loam, 1969 Loam loam, 1969 Loam - l?"l~"~? control 0' oh 0" 0' 3 91 oah A? 0" T;?v:cjin 0.5 76nb 100" 100" 43b 33b 7352h 800" 1 .O 93" 100" 97" 67' 87" 1000~~ 243" ';'!rnl~q' 0.5 67"' 96" 100" 3" 17" 1020" 700" 1.0 '. 93..." 97" 100" 3" 13" ~72"~ 502" 9~3~ 6.0 67sb 06" 0' 880Rh 10.0 76"" 100" 87" 3' 1 7" 710h ROO" E?TC 4.0 1 OC 100" 27" 980"~ ,'e'~icI! 4.0 4?bc 98" 37h ~70"~ '"~e sandy loom soil wos at Wellingtor?, and loam soil was at Lubbock. Means with the same...

  11. Effect of Optical Brightening Agents and UV Protective Coating on Print Stability of Fine Art Substrates for Ink Jet

    E-Print Network [OSTI]

    Fleming, Paul D. "Dan"

    Center Sun Chemical Corporation ** Department of Paper Engineering, Chemical Engineering and Imaging: Ink jet 100% cotton papers with OBA: Hahnemühle Photo rag Sterling smooth Fine

  12. POC-Scale Testing of an Advanced Fine Coal Dewatering Equipment/Technique

    SciTech Connect (OSTI)

    B. K. Karekh; D. Tao; J. G. Groppo

    1998-08-28T23:59:59.000Z

    Froth flotation technique is an effective and efficient process for recovering of ultra-fine (minus 74 mm) clean coal. Economical dewatering of an ultra-fine clean coal product to a 20% level moisture will be an important step in successful implementation of the advanced cleaning processes. This project is a step in the Department of Energy's program to show that ultra-clean coal could be effectively dewatered to 20% or lower moisture using either conventional or advanced dewatering techniques. The cost-sharing contract effort is for 45 months beginning September 30, 1994. This report discusses technical progress made during the quarter from January 1 ? March 31, 1998.

  13. Soils as a factor in Pinyon Pine mortality due to Ips Beetle infestation in Garden Park, Colorado: a case study.

    E-Print Network [OSTI]

    Krecic, Jeffrey

    2008-02-25T23:59:59.000Z

    on severely water-and nutrient-poor cinder soil from Sunset Crater in Northern Arizona with trees growing on adjacent sandy-loam soil. By looking at the genotypic variations in glycerate dehydrogenase enzyme (GLY) locus among juvenile, intermediate and mature... pinyon pines on the cinder soil have a higher frequency of SS homozygotes than juveniles on the same soil. However, there is no significant difference in SS homozygotes between juvenile and mature pinyon pines on sandy-loam soil. The 20 difference...

  14. Vegetables: Varieties of Sweet Potatoes, Onions, Melons, Celery, Beans, Cabbage, Cauliflower, and Tomatoes. Insecticides.

    E-Print Network [OSTI]

    Price, R. H.; Harrington, H. H.; Ness, H.

    1895-01-01T23:59:59.000Z

    . The following is a report by Prof. Fred W. Mally upon eight varie ties tested for us on a rather light sandy-loam soil: "Slips of eight varieties were received May 3, 1894, as follows:: Southern Queen, Gen. Grant, Gold Skin, Vineless, Tennessee, Nansemond..., compact clay of meflium fertility, underlaid by an almost impervious white clay. Some of the varieties would have shown higher yields and better table quality, no ctoubt, if they had been grown on a sandy loam soil, which is consicterect the best. 610...

  15. The mineralogy and chemistry of fine-grained sediments, Morphou Bay, CyprusHydrology and Earth System Sciences, 6(5), 819831 (2002) EGS The mineralogy and chemistry of fine-grained sediments,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2002-01-01T23:59:59.000Z

    819 The mineralogy and chemistry of fine-grained sediments, Morphou Bay, CyprusHydrology and Earth System Sciences, 6(5), 819­831 (2002) © EGS The mineralogy and chemistry of fine-grained sediments10 8BB, UK Email: cn@ceh.ac.uk Abstract The mineralogy and chemistry of the less than 20µm fraction

  16. Manageable Fine-Grained Information Flow Petros Efstathopoulos and Eddie Kohler

    E-Print Network [OSTI]

    Kohler, Eddie

    control (DIFC), a promising tool for improving ap- plication security, gives application developers fine-grained control over security policy and privilege management. DIFC developers can partition much application are spread over several application pieces. Common programming errors may be indistinguishable from policy

  17. Distribution of Fine Roots of Ponderosa Pine and Douglas-Fir in a Central Idaho Forest

    E-Print Network [OSTI]

    Fried, Jeremy S.

    at a study site in a central Idaho forest. Concentration and content of fine roots extracted from soil cores of exotic dis- eases, heavy grazing, and timber harvest has altered forest structure, stand composition(SwezyandAgee1991,Dumm2003).Finerootsarecritical structures for water and nutrient absorption from the soil

  18. CHP and CHPsim: A Language and Simulator for Fine-Grain Distributed Computation

    E-Print Network [OSTI]

    Martin, Alain

    1 CHP and CHPsim: A Language and Simulator for Fine-Grain Distributed Computation Alain J. Martin Abstract--This paper describes a complete and stable version of CHP and the simulator CHPsim. CHP partial versions of the language are already widely used, but CHP has never been presented as a complete

  19. Fine-Grained Power Modeling for Smartphones Using System Call Tracing

    E-Print Network [OSTI]

    Zhang, Ming

    Fine-Grained Power Modeling for Smartphones Using System Call Tracing Abhinav Pathak Purdue consumption of mobile applications. We observe that state- of-the-art, utilization-based power modeling correlates the (actual) utilization of a hardware component with its power state, and hence is insufficient

  20. Fine-Grained Remote Monitoring, Control and Pre-Paid Electrical Service in Rural Microgrids

    E-Print Network [OSTI]

    Goldstein, Seth Copen

    Fine-Grained Remote Monitoring, Control and Pre-Paid Electrical Service in Rural Microgrids Maxim microgrid deployment in rural Les Anglais, Haiti. The system consists of a three-tiered architecture,arthur}@earthsparkinternational.org Abstract--In this paper, we present the architecture, design and experiences from a wirelessly managed

  1. University of Minnesota Duluth 2009-11 Catalog School of Fine Arts

    E-Print Network [OSTI]

    Amin, S. Massoud

    .F.A. 125 Graphic Design B.F.A. 126 Art Education K­12 B.F.A. 127 Art B.A. 128 Art Minor 128 Art History B connections to the community. All units within the School of Fine Arts are committed to demanding standards

  2. Ultrafast extended x-ray absorption fine structure ,,EXAFS...--theoretical considerations

    E-Print Network [OSTI]

    Cao, Jianshu

    13­20 to generate ultrafast x-ray pulses, however, the prospect of ultrafast EXAFS seems encouragingUltrafast extended x-ray absorption fine structure ,,EXAFS...--theoretical considerations Frank L by the recent experimental demonstration of ultrafast x-ray absorption spectroscopy, we present a framework

  3. Roadmap: Crafts Textile Arts Bachelor of Fine Arts [CA-BFA-CRFT-TXTL

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Crafts ­ Textile Arts ­ Bachelor of Fine Arts [CA-BFA-CRFT-TXTL] College of the Arts School of Art Catalog Year: 2012­2013 Page 1 of 2 | Last Updated: 29-May-12/JS This roadmap Core Requirement 3 See Kent Core Summary on page 2 Kent Core Requirement 3 #12;Roadmap: Crafts

  4. Roadmap: Theatre Studies Design and Technology Bachelor of Fine Arts [CA-BFA-THEA-DT

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Theatre Studies ­ Design and Technology ­ Bachelor of Fine Arts [CA-BFA-THEA-DT] College This roadmap is a recommended semester-by-semester plan of study for this major. However, courses learning requirement and counts in the major GPA #12;Roadmap: Theatre Studies ­ Design and Technology

  5. Roadmap: Crafts Ceramics Bachelor of Fine Arts [CA-BFA-CRFT-CERM

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Crafts ­ Ceramics ­ Bachelor of Fine Arts [CA-BFA-CRFT-CERM] College of the Arts School of Art Catalog Year: 2012­2013 Page 1 of 2 | Last Updated: 29-May-12/JS This roadmap is a recommended Core Requirement 3 See Kent Core Summary on page 2 Kent Core Requirement 3 #12;Roadmap: Crafts

  6. Fine Structure of the Solar Wind Turbulence Inferred from Simultaneous Radio Occultation Observations at

    E-Print Network [OSTI]

    Padmanabhan, Janardhan

    Fine Structure of the Solar Wind Turbulence Inferred from Simultaneous Radio Occultation Observations at Widely-Spaced Ground Stations M.K. Bird , P. Janardhan , A.I. Efimov, L.N. Samoznaev, V extended for up to four hours, thereby allowing studies of solar wind turbulence dynamics at spatial scales

  7. MobiCom Poster Abstract: On the (In)Feasibility of Fine Grained Power Control

    E-Print Network [OSTI]

    Liblit, Ben

    MobiCom Poster Abstract: On the (In)Feasibility of Fine Grained Power Control Vivek Shrivastava shown that ideal medium access protocol using opti- mal power control can improve channel utilization by up to a factor of , where is the density of nodes in the region [1]. Although power control mecha

  8. Web Taxonomy Integration with Hierarchical Shrinkage Algorithm and Fine-Grained Relations

    E-Print Network [OSTI]

    Lee, Cheng-Wei

    Elsevier 1 Web Taxonomy Integration with Hierarchical Shrinkage Algorithm and Fine; accepted date here Abstract We address the problem of integrating web taxonomies from different real Internet applications. Integrating web taxonomies is to transfer instances from a source to target taxonomy

  9. SunCast: Fine-grained Prediction of Natural Sunlight Levels for Improved Daylight Harvesting

    E-Print Network [OSTI]

    Whitehouse, Kamin

    SunCast: Fine-grained Prediction of Natural Sunlight Levels for Improved Daylight Harvesting, USA {jklu,whitehouse}@cs.virginia.edu ABSTRACT Daylight harvesting is the use of natural sunlight to reduce the need for artificial lighting in buildings. The key challenge of daylight harvesting

  10. Automatic fine-tuning and wind simulation at the Offshore Technology Research Center (OTRC)

    E-Print Network [OSTI]

    Miller, Mark Alan

    1994-01-01T23:59:59.000Z

    the wind generator. The fans are required to move the ambient test facility air in a circulatory fashion. This paper examines the procedures taken to run the fans in a test matrix and fine tune the fan drive signals to provide the proper statistical...

  11. Constraints on the value of the fine structure constant from gravitational thermodynamics

    E-Print Network [OSTI]

    P. C. W. Davies

    2007-09-26T23:59:59.000Z

    In this paper I show how the second law of thermodynamics, generalized to include event horizon area, places interesting constraints on the value of the fine structure constant. A simple analysis leads to the conclusion that classical Dirac and point-like magnetic monopoles could be used to violate the second law, and that GUT monopoles are inconsistent with minicharged particles.

  12. Fine Grain 3D Integration for Microarchitecture Design Through Cube Packing Exploration*

    E-Print Network [OSTI]

    Cong, Jason "Jingsheng"

    .R.China 3 California NanoSystems Institute E-mail: myc@mail.tsinghua.edu.cn; cong@cs.ucla.edu Abstract Most power and performance improvement is achievable through fine grain 3D integration, the necessary provide up to 30% reduction in power dissipation compared to the single-layer alternatives. Peak

  13. Original article Water extraction by tree fine roots in the forest

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Original article Water extraction by tree fine roots in the forest floor of a temperate Fagus Germany. By field and laboratory measurements the aim was to quantify the water extraction by those tree extract more water per standing crop of root biomass and, thus, are thought to operate more economically

  14. Segmentation and Enhancement of Latent Fingerprints: A Coarse to Fine Ridge

    E-Print Network [OSTI]

    ., "Image Quality Assessment: From Error Visibility to Structural Similarity", IEEE Transaction on ImageSegmentation and Enhancement of Latent Fingerprints: A Coarse to Fine Ridge Structure Dictionary ridge Pores · Include all dimensional attributes of the ridge such as pores, edge contour, incipient

  15. MORPHOLOGY, HISTOLOGY, AND FINE STRUCTURE Sensilla on the Antennal Flagellum of Sirex noctilio

    E-Print Network [OSTI]

    MORPHOLOGY, HISTOLOGY, AND FINE STRUCTURE Sensilla on the Antennal Flagellum of Sirex noctilio subterminal pore is seen to be associated with each sensillum. Males had signiÞcantly more uniporous sensory (Pinus taeda L.). S. noctilio has therefore been assessed as being a high risk to native pine forests

  16. Available online at www.sciencedirect.com Fine dining or fortress? Functional shifts in spider web

    E-Print Network [OSTI]

    Blackledge, Todd

    Available online at www.sciencedirect.com Fine dining or fortress? Functional shifts in spider web online 16 June 2008; MS. number: A10919) Spiders alter web architecture in response to many environmental for spiders that spin long-lasting webs such as cobwebs. The western black widow spins a three-dimensional web

  17. THE FINE STRUCTURE OF THE WAX GLAND OF THE HONEY BEE (APIS MELLIFERA L.)

    E-Print Network [OSTI]

    Boyer, Edmond

    THE FINE STRUCTURE OF THE WAX GLAND OF THE HONEY BEE (APIS MELLIFERA L.) Malcolin T. SANFORD Alfred An electron microscopic study was initiated to elucidate the ultrastructure of the wax gland in an actively wax secreting worker honey bee. The investigation showed that the cuticle is penetrated by bundles

  18. Thermal Management of a Many-Core Processor under Fine-Grained Parallelism

    E-Print Network [OSTI]

    Moreshet, Tali

    dynamic thermal management (DTM) in order to improve the power envelope without having to adopt moreThermal Management of a Many-Core Processor under Fine-Grained Parallelism Fuat Keceli1 , Tali of a broader family of shared memory many-core systems. 1 Introduction Thermal feasibility has become a first

  19. FinE is an international research project investigating the prevalence and

    E-Print Network [OSTI]

    Dieckmann, Ulf

    of evolutionary changes caused by fishing in European waters. FinE is developing new scientific tools required.iiasa.ac.at/Research/EEP/FinE The Evolutionary Dimension of Modern Fishing Worldwide, commercial fishing maximally exploits or overexploits three-quarters of fish stocks. Wasteful practices and ineffective enforcement of fishing quotas are contributing to this

  20. A Fine-Grained Analysis of the Performance and Power Benefits of Compiler Optimizations for Embedded

    E-Print Network [OSTI]

    Giesbrecht, Mark

    optimization phase inside of an adaptive dynamic optimizer if power consumption is of importance. 1 grant. is achieved by hand programming various transformations in PowerPC assembly. Specifically, weA Fine-Grained Analysis of the Performance and Power Benefits of Compiler Optimizations

  1. An efficient process for recovery of fine coal from tailings of coal washing plants

    SciTech Connect (OSTI)

    Cicek, T.; Cocen, I.; Engin, V.T.; Cengizler, H. [Dokuz Eylul University, Izmir (Turkey). Dept. for Mining Engineering

    2008-07-01T23:59:59.000Z

    Gravity concentration of hard lignites using conventional jigs and heavy media separation equipment is prone to produce coal-rich fine tailings. This study aims to establish a fine coal recovery process of very high efficiency at reasonable capital investment and operational costs. The technical feasibility to upgrade the properties of the predeslimed fine refuse of a lignite washing plant with 35.9% ash content was investigated by employing gravity separation methods. The laboratory tests carried out with the combination of shaking table and Mozley multi-gravity separator (MGS) revealed that the clean coal with 18% ash content on dry basis could be obtained with 58.9% clean coal recovery by the shaking table stage and 4.1% clean coal recovery by MGS stage, totaling to the sum of 63.0% clean coal recovery from a predeslimed feed. The combustible recovery and the organic efficiency of the shaking table + MGS combination were 79.5% and 95.5%, respectively. Based on the results of the study, a flow sheet of a high-efficiency fine coal recovery process was proposed, which is also applicable to the coal refuse pond slurry of a lignite washing plant.

  2. Multi-gravity separator: an alternate gravity concentrator to process coal fines

    SciTech Connect (OSTI)

    Majumder, A.K.; Bhoi, K.S.; Barnwal, J.P. [Regional Research Laboratories, Bhopal (India)

    2007-08-15T23:59:59.000Z

    The multi-gravity separator (MGS) is a novel piece of equipment for the separation of fine and ultra-fine minerals. However, the published literature does not demonstrate its use in the separation of coal fines. Therefore, an attempt was made to study the effects of different process variables on the performance of an MGS for the beneficiation of coal fines. The results obtained from this study revealed that among the parameters studied, drum rotation and feed solids concentration play dominating roles in controlling the yield and ash content of the clean coal. Mathematical modeling equations that correlate the variables studied and the yield and ash contents of the clean coal were developed to predict the performance of an MGS under different operating and design conditions. The entire exercise revealed that the MGS could produce a clean coal with an ash content of 14.67% and a yield of 71.23% from a feed coal having an ash content of 24.61 %.

  3. Sediment accumulation patterns and fine-scale strata formation on the Waiapu River shelf, New Zealand

    E-Print Network [OSTI]

    Newman, Michael C.

    such that only an estimated ~23% (ranging between 17 and 38%) of the fluvial load was retained on the shelf profiles, suggesting that multiple transport processes influenced fine-scale strata formation. Layers a significant fraction of a small river's annual load (Milliman and Syvitski, 1992; Farnsworth and Milliman

  4. PLAN OF STUDY: BFA -Digital Media & Design SCHOOL OF FINE ARTS

    E-Print Network [OSTI]

    Alpay, S. Pamir

    PLAN OF STUDY: BFA - Digital Media & Design SCHOOL OF FINE ARTS 2013-2014Catalog BFA in DMD ATTACH-level or higher courses within area of concentration: 2D, 3D, Interactive Media Design, Digital Game REQUIREMENTS: 79 credits DMD Common Courses (37 credits): DMD 1000 (3) ­ Digital Foundation DMD 1030 (3

  5. Production of a pellet fuel from Illinois coal fines. Technical report, September 1--November 30, 1994

    SciTech Connect (OSTI)

    Rapp, D.; Lytle, J.; Berger, R.

    1994-12-31T23:59:59.000Z

    The primary goal of this research is to produce a pellet fuel from low-sulfur Illinois coal fines which could burn with emissions of less than 1.8 lbs SO{sub 2}/10{sup 6} Btu in stoker-fired boilers. The significance of 1.8 lbs SO{sub 2}/10{sup 6} Btu is that in the Chicago (9 counties) and St. Louis (2 counties) metropolitan areas, industrial users of coal currently must comply with this level of emissions. Stokers are an attractive market for pellets because pellets are well-suited for this application and because western coal is not a competitor in the stoker market. Compliance stoker fuels come from locations such as Kentucky and West Virginia and the price for fuels from these locations is high relative to the current price of Illinois coal. This market offers the most attractive near-term economic environment for commercialization of pelletization technology. For this effort, the authors will be investigating the use of fines from two Illinois mines which currently mine relatively low-sulfur reserves and that discard their fines fraction (minus 100 mesh). The research will involve investigation of multiple unit operations including column flotation, filtration and pellet production. The end result of the effort will allow for an evaluation of the commercial viability of the approach. This quarter pellet production work commenced and planning for collection and processing of a preparation plant fines fraction is underway.

  6. Supporting Empirical Studies by Non-Intrusive Collection and Visualization of Fine-Grained Revision History

    E-Print Network [OSTI]

    Robillard, Martin

    Supporting Empirical Studies by Non-Intrusive Collection and Visualization of Fine-Grained Revision in empirical studies of pro- grammers. The revision history is collected non-intrusively, and does not depend. Studying these activities for the sake of finding patterns and analyzing their nature requires non-intrusive

  7. Brief Communication Ultra fine carbon nitride nanocrystals synthesized by laser ablation

    E-Print Network [OSTI]

    Bristol, University of

    Brief Communication Ultra fine carbon nitride nanocrystals synthesized by laser ablation in liquid form 15 October 2006 Key words: carbon nitride, laser ablation, liquid-solid interface, nanoparticle synthesized at room tem- perature and pressure using the novel technique of pulsed laser ablation

  8. Fine-grained Simulation in the Design of Automotive Communication Systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fine-grained Simulation in the Design of Automotive Communication Systems Aurélien Monot1 and di- mensioning automotive embedded networks are worst-case schedulability analysis and simulation architectures in the automotive domain are defined years in advance and their real- time properties need

  9. Fine scale modeling of wintertime aerosol mass, number, and size distributions in central California

    E-Print Network [OSTI]

    Jacobson, Mark

    Fine scale modeling of wintertime aerosol mass, number, and size distributions in central with the observed PM number and size distributions (with an NMB of -13.9%), indicating the importance of coagulation scale modeling of wintertime aerosol mass, number, and size distributions in central California, J

  10. Measurement and Analysis of the Relationship between Ammonia, Acid Gases, and Fine Particles in Eastern North

    E-Print Network [OSTI]

    Aneja, Viney P.

    ).2­4 Gas-to-particle conversion can be accomplished by condensation, which adds mass onto preMeasurement and Analysis of the Relationship between Ammonia, Acid Gases, and Fine Particles acid gas con- centrations of 0.23 g/m3 hydrochloric acid (standard deviation [SD] 0.2 g/m3 ); 1.14 g/m3

  11. New rest wavelength determinations for 7 mid-infrared fine structure lines by ISO-SWS

    E-Print Network [OSTI]

    H. Feuchtgruber; D. Lutz; D. A. Beintema

    2001-05-15T23:59:59.000Z

    Observations of the planetary nebulae NGC6302, NGC6543 and NGC7027 by the Short Wavelength Spectrometer (SWS) on board the Infrared Space Observatory (ISO) have been used to determine rest wavelengths of spectral lines. We report on improved accuracies for wavelengths of 7 mid-infrared ionic fine structure lines.

  12. Fine-grained Energy Consumption Characterization and Modeling Catherine Mills Olschanowsky, Tajana Rosing, and

    E-Print Network [OSTI]

    Simunic, Tajana

    Fine-grained Energy Consumption Characterization and Modeling Catherine Mills Olschanowsky, Tajana of the applications in the workload affect the energy consumption of the resource. Our experiments confirm that data the performance and energy-efficiency of candidate resources. Predicting the energy consumption of an HPC resource

  13. Ocean Heat Transport , Overturning Circulations, and some fine-resolution ASOF dynamics

    E-Print Network [OSTI]

    thermal agitation -internal energy of the fluid is typically 10 orders of magnitude greater thanOcean Heat Transport , Overturning Circulations, and some fine-resolution ASOF dynamics P.B. Rhines & S. Häkkinen #12;· Many basic tenets of ocean circulation are being challenged, and they relate

  14. Aggregate production: Fines generation during rock crushing M.S. Guimaraes a

    E-Print Network [OSTI]

    Palomino, Angelica M.

    Aggregate production: Fines generation during rock crushing M.S. Guimaraes a , J.R. Valdes b , A.M.: +1 814 865 9427; fax: +1 814 863 7304. E-mail address: amp26@psu.edu (A.M. Palomino). 0301

  15. absorption fine-structure spectroscopy: Topics by E-print Network

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

    absorption fine-structure spectroscopy First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Effect of...

  16. Mossbauer spectra of single-domain fine particle systems described using a multiple-level relaxation model for superparamagnets

    E-Print Network [OSTI]

    Ryan, Dominic

    Mo¨ssbauer spectra of single-domain fine particle systems described using a multiple successfully describes the Mo¨ssbauer spectra of real fine particle systems at all temperatures of interest moments are blocked, Mo¨ssbauer spectra can be described with static hyperfine fields. With an increase

  17. MS#040418-01 1 Abstract--The fine scale swimming behavior of fish can now be

    E-Print Network [OSTI]

    Linder, Stephen

    MS#040418-01 1 Abstract--The fine scale swimming behavior of fish can now be studied because evaluation of the performance of these tracking algorithms for the analysis of fine scale behavior of fish was performed using a data set of 100 fish track tracks recorded simultaneously with a multibeam sonar

  18. High-pressure X-ray absorption fine structure in the diamond anvil cell and its applications in geological materials

    E-Print Network [OSTI]

    Duffy, Thomas S.

    nano- polycrystalline diamond instead of single crystal anvils, the influence of diamond diffractionHigh-pressure X-ray absorption fine structure in the diamond anvil cell and its applications fine structure in the diamond anvil cell and its applications in geological materials Xinguo Hong1

  19. Speciation of ambient fine organic carbon particles and source apportionment of PM2.5 in Indian cities

    E-Print Network [OSTI]

    Zheng, Mei

    Speciation of ambient fine organic carbon particles and source apportionment of PM2.5 in Indian, and Chandigarh is speciated to quantify sources contributing to fine particle pollution. Gas chromatography patterns of the impact of these five sources are observed. On average, primary emissions from fossil fuel

  20. Feasibility Study of Single-Photon Counting Using a Fine-mesh Phototube for an Aerogel Readout

    E-Print Network [OSTI]

    R. Enomoto et al

    1994-12-14T23:59:59.000Z

    The fine-mesh phototube is one type of photodetector which can be used under a strong magnetic field. For an aerogel readout, the single-photon detection efficiency should be close to 100\\% in order to identify particle species. We carried out a feasibility study of single-photon counting using fine-mesh phototubes, and obtained a possible solution.

  1. Depositional facies and environments of the lower Mineral Wells formation, Pennsylvanian Strawn group, north central Texas

    E-Print Network [OSTI]

    Bradshaw, Susan Elizabeth

    1996-01-01T23:59:59.000Z

    siltstones. The transgressive shoreface facies consists of cross-laminated and ripple laminated fine-grained sandstones, highly bioturbated fine-grained sandstones, very thinly-bedded very fine-grained sandstones, and sandy and silty mudstones...

  2. Activity testing of fine-particle size, iron catalysts for coal liquefaction

    SciTech Connect (OSTI)

    Stohl, F.V.; Diegert, K.V.; Gugliotta, T.P.

    1993-10-01T23:59:59.000Z

    The use of fine-particle size (< 40 nm) unsupported catalysts in direct coal liquefaction may result in improved economics due to possible enhanced yields of desired products, the potential for decreasing reaction severity, and the possibility of using less catalyst. Sandia has developed a standard testing procedure for evaluating and comparing the fine-particle catalysts. The test procedure uses phenanthrene as the reaction solvent, the DECS-17 Blind Canyon Coal, and a statistical experimental design to enable evaluation of the catalysts over ranges of temperature (350 to 400{degrees}C), time (20 to 60 minutes), and catalyst loading (0 to 1 wt % on a dmmf coal basis). Product analyses include tetrahydrofuran (THF) conversion, heptane conversion, solvent recovery, and gas analyses. Phenanthrene as the solvent in the testing procedure yielded significant differences between thermal and catalytic reactions, whereas using a good hydrogen donor such as 9,10-dihydrophenanthrene (DHP) showed no catalytic effects.

  3. POC-SCALE TESTING OF AN ADVANCED FINE COAL DEWATERING EQUIPMENT/TECHNIQUE

    SciTech Connect (OSTI)

    B.K. PAREKH; D. TAO; J.G. GROPPO

    1998-02-03T23:59:59.000Z

    The main objective of the proposed program is to evaluate a novel surface modification technique, which utilizes the synergistic effect of metal ions-surfactant combination, for dewatering of ultra-fine clean coal on a proof-of-concept scale of 1 to 2 tph. The novel surface modification technique developed at the UKCAER will be evaluated using vacuum, centrifuge, and hyperbaric filtration equipment. Dewatering tests will be conducted using the fine clean-coal froth produced by the column flotation units at the Powell Mountain Coal Company, Mayflower Preparation Plant in St. Charles, Virginia. The POC-scale studies will be conducted on two different types of clean coal, namely, high-sulfur and low-sulfur clean coal. The Mayflower Plant processes coals from five different seams, thus the dewatering studies results could be generalized for most of the bituminous coals.

  4. The Analysis of Penumbral Fine Structure Using an Advanced Inversion Technique

    E-Print Network [OSTI]

    Jan Jur?ák; Luis Bellot Rubio; Kiyoshi Ichimoto; Yukio Katsukawa; Bruce Lites; Shin'ichi Nagata; Toshifumi Shimizu; Yoshinori Suematsu; Theodore Tarbell; Alan Title; Saku Tsuneta

    2007-07-11T23:59:59.000Z

    We present a method to study the penumbral fine structure using data obtained by the spectropolarimeter onboard HINODE. For the first time, the penumbral filaments can be considered as resolved in spectropolarimetric measurements. This enables us to use inversion codes with only one-component model atmospheres, and thus assign the obtained stratifications of plasma parameters directly to the penumbral fine structure. This approach is applied to the limb-side part of the penumbra in active region NOAA 10923. The preliminary results show a clear dependence of the plasma parameters on continuum intensity in the inner penumbra, i.e. weaker and horizontal magnetic field along with increased line-of-sight velocity are found in the low layers of the bright filaments. The results in the mid penumbra are ambiguous and future analyses are necessary to unveil the magnetic field structure and other plasma parameters there.

  5. POC-scale testing of an advanced fine coal dewatering equipment/technique

    SciTech Connect (OSTI)

    NONE

    1998-09-01T23:59:59.000Z

    Froth flotation technique is an effective and efficient process for recovering of ultra-fine (minus 74 pm) clean coal. Economical dewatering of an ultra-fine clean-coal product to a 20% level moisture will be an important step in successful implementation of the advanced cleaning processes. This project is a step in the Department of Energy`s program to show that ultra-clean coal could be effectively dewatered to 20% or lower moisture using either conventional or advanced dewatering techniques. The cost-sharing contract effort is for 36 months beginning September 30, 1994. This report discusses technical progress made during the quarter from July 1 - September 30, 1997.

  6. Fine grained event processing on HPCs with the ATLAS Yoda system

    E-Print Network [OSTI]

    Calafiura, Paolo; The ATLAS collaboration; Guan, Wen; Maeno, Tadashi; Nilsson, Paul; Oleynik, Danila; Panitkin, Sergey; Tsulaia, Vakhtang; van Gemmeren, Peter; Wenaus, Torre

    2015-01-01T23:59:59.000Z

    High performance computing facilities present unique challenges and opportunities for HENP event processing. The massive scale of many HPC systems means that fractionally small utilizations can yield large returns in processing throughput. Parallel applications which can dynamically and efficiently fill any scheduling opportunities the resource presents benefit both the facility (maximal utilization) and the (compute-limited) science. The ATLAS Yoda system provides this capability to HENP-like event processing applications by implementing event-level processing in an MPI-based master-client model that integrates seamlessly with the more broadly scoped ATLAS Event Service. Fine grained, event level work assignments are intelligently dispatched to parallel workers to sustain full utilization on all cores, with outputs streamed off to destination object stores in near real time with similarly fine granularity, such that processing can proceed until termination with full utilization. The system offers the efficie...

  7. Black Bear Prep plant replaces high-frequency screens with fine wire sieves

    SciTech Connect (OSTI)

    Barbee, C.J.; Nottingham, J.

    2007-12-15T23:59:59.000Z

    At the Black Bear prep plant (near Wharncliffe, WV, USA) the clean coal from the spirals traditionally reported to high-frequency screens, which removed high-ash clay fines. Screens have inherent inefficiencies that allow clean coal to report to the screen underflow. The goal of this project was to capture the maximum amount of spiral clean coal while still removing the high-ash clay material found in the spiral product. The reduction of the circulating load and plant downtime for unscheduled maintenance were projected as additional benefits. After the plant upgrade, the maintenance related to the high frequency screens was eliminated and an additional 2.27 tons per hour (tph) of fine coal was recovered, which resulted in a payback period of less than one year. The article was adapted from a paper presented at Coal Prep 2007 in April 2007, Lexington, KY, USA. 1 ref., 1 fig., 1 tab.

  8. Engineering development of advanced physical fine coal cleaning technologies: Froth flotation

    SciTech Connect (OSTI)

    Not Available

    1992-01-01T23:59:59.000Z

    A study conducted by Pittsburgh Energy Technology Center of sulfur emissions from about 1,300 United States coal-fired utility boilers indicated that half of the emissions were the result of burning coals having greater than 1.2 pounds of SO[sub 2] per million BTU. This was mainly attributed to the high pyritic sulfur content of the boiler fuel. A significant reduction in SO[sub 2] emissions could be accomplished by removing the pyrite from the coals by advanced physical fine coal cleaning. An engineering development project was prepared to build upon the basic research effort conducted under a solicitation for research into Fine Coal Surface Control. The engineering development project is intended to use general plant design knowledge and conceptualize a plant to utilize advanced froth flotation technology to process coal and produce a product having maximum practical pyritic sulfur reduction consistent with maximum practical BTU recovery.

  9. The Effect of Adding Small Percentages of Finely Ground Metals to Enamels

    E-Print Network [OSTI]

    Pyle, Glenn L.

    1912-05-15T23:59:59.000Z

    THE EFFECT OF ADDING SMALL PERCENTAGES OF FINELY GROUND METALS TO ENAMELS GLENN L. PYLE 1 9 1 2 THB OTKCT OP ADDING SMALL PERCENTAGES OF FINELY GROUND EETAL8 TO ENAKBLS. L a w r e n c e , K a n s a s , Hay 1 5 , 1 9 X 2 . P r o f e s s o r H. P... s t e r Row, London , 1 9 0 8 , 2 , T r a n s a c t i o n s American Ceramic S o c i e t y , V o l , X I , 1 9 0 9 , The A l l o w a b l e L i m i t s o f V a r i a t i o n s in the I n g r e d i e n t s o f Enamels f o r Shee t S t e e l , pages 1 0...

  10. Possible variations of the fine structure constant $?$ and their metrological significance

    E-Print Network [OSTI]

    K. A. Bronnikov; S. A. Kononogov

    2006-09-03T23:59:59.000Z

    We briefly review the recent experimental results on possible variations of the fine structure constant $\\alpha$ on the cosmological time scale and its position dependence. We outline the theoretical grounds for the assumption that $\\alpha$ might be variable, mention some phenomenological models incorporating a variable $\\alpha$ into the context of modern cosmology and discuss the significance of possible $\\alpha$ variations for theoretical and practical metrology.

  11. Frictional properties between fine grained limestone, dolomite and sandstone along precut surfaces 

    E-Print Network [OSTI]

    Iwasaki, Takeshi

    1970-01-01T23:59:59.000Z

    characteristic parallel lines upon its surface in the direction of slid- ing. If the two materials are the same, both surfaces flow equally, and mutual adhesion and welding occur at the points of contact. In the latter case, frictional work is required... FRICTIONAL PROPERTIES BETNEEN FINE GRAINED I, IMESTONE, DOLOMI"'E AND SANDSTONE ALONG PRECUT SURFACFS A Thesis TAKESHI INASAKI Submitted to the Graduate College of Texas MN University in partial fulfillment of the requirements for the degree...

  12. Cryogenic fractionator gas as stripping gas of fines slurry in a coking and gasification process

    DOE Patents [OSTI]

    DeGeorge, Charles W. (Chester, NJ)

    1981-01-01T23:59:59.000Z

    In an integrated coking and gasification process wherein a stream of fluidized solids is passed from a fluidized bed coking zone to a second fluidized bed and wherein entrained solid fines are recovered by a scrubbing process and wherein the resulting solids-liquid slurry is stripped with a stripping gas to remove acidic gases, at least a portion of the stripping gas comprises a gas comprising hydrogen, nitrogen and methane separated from the coker products.

  13. Residence times of fine tropospheric aerosols as determined by {sup 210}Pb progeny.

    SciTech Connect (OSTI)

    Marley, N. A.; Gaffney, J. S.; Drayton, P. J.; Cunningham, M. M.; Mielcarek, C.; Ravelo, R.; Wagner, C.

    1999-10-05T23:59:59.000Z

    Fine tropospheric aerosols can play important roles in the radiative balance of the atmosphere. The fine aerosols can act directly to cool the atmosphere by scattering incoming solar radiation, as well as indirectly by serving as cloud condensation nuclei. Fine aerosols, particularly carbonaceous soots, can also warm the atmosphere by absorbing incoming solar radiation. In addition, aerosols smaller than 2.5 {micro}m have recently been implicated in the health effects of air pollution. Aerosol-active radioisotopes are ideal tracers for the study of atmospheric transport processes. The source terms of these radioisotopes are relatively well known, and they are removed from the atmosphere only by radioactive decay or by wet or dry deposition of the host aerosol. The progeny of the primordial radionuclide {sup 238}U are of particular importance to atmospheric studies. Uranium-238 is common throughout Earth's crust and decays to the inert gas {sup 222}Rn, which escapes into the atmosphere. Radon-222 decays by the series of alpha and beta emissions shown in Figure 1 to the long-lived {sup 210}Pb. Once formed, {sup 210}Pb becomes attached to aerosol particles with average attachment times of 40 s to 3 min.

  14. POC-SCALE TESTING OF AN ADVANCED FINE COAL DEWATERING EQUIPMENT/TECHNIQUE

    SciTech Connect (OSTI)

    X.H. Wang; J. Wiseman; D.J. Sung; D. McLean; William Peters; Jim Mullins; John Hugh; G. Evans; Vince Hamilton; Kenneth Robinette; Tim Krim; Michael Fleet

    1999-08-01T23:59:59.000Z

    Dewatering of ultra-fine (minus 150 {micro}m) coal slurry to less than 20% moisture is difficult using the conventional dewatering techniques. The main objective of the project was to evaluate a novel surface modification technique, which utilizes the synergistic effect of metal ions and surfactants in combination for the dewatering of ultra-fine clean-coal slurries using various dewatering techniques on a proof-of-concept (POC) scale of 0.5 to 2 tons per hour. The addition of conventional reagents and the application of coal surface modification technique were evaluated using vacuum filtration, hyperbaric (pressure) filtration, ceramic plate filtration and screen-bowl centrifuge techniques. The laboratory and pilot-scale dewatering studies were conducted using the fine-size, clean-coal slurry produced in the column flotation circuit at the Powell Mountain Coal Company, St. Charles, VA. The pilot-scale studies were conducted at the Mayflower preparation plant in St. Charles, VA. The program consisted of nine tasks, namely, Task 1--Project Work Planning, Task 2--Laboratory Testing, Task 3--Engineering Design, Task 4--Procurement and Fabrication, Task 5--Installation and Shakedown, Task 6--System Operation, Task 7--Process Evaluation, Task 8--Equipment Removal, and Task 9--Reporting.

  15. ASCE Journal of Materials in Civil Engineering, 20 (7), 502-508, 2008. Early-Age Properties of Cement-Based Materials: I. Influence of Cement Fineness

    E-Print Network [OSTI]

    Bentz, Dale P.

    of Cement-Based Materials: I. Influence of Cement Fineness Dale P. Bentz1* , Gaurav Sant1 , and Jason Weiss1 Abstract The influence of cement fineness on early-age properties of cement-based materials is investigated deformation. Measurements of these properties for two cements of widely different fineness are supplemented

  16. Corrosion and ion release behavior of ultra-fine grained bulk pure copper fabricated by ECAP in Hanks solution as potential biomaterial for contraception

    E-Print Network [OSTI]

    Zheng, Yufeng

    Corrosion and ion release behavior of ultra-fine grained bulk pure copper fabricated by ECAP-fine grained copper ECAP Corrosion behavior Ion release Ultra-fine grained (UFG) bulk pure copper has been revealed that the corrosion current of UFG copper ishigherthan that of the coarse grained copper

  17. Characterization of Fine Particulate Matter (PM) and Secondary PM Precursor Gases in Mexico City

    SciTech Connect (OSTI)

    Dr. Charles E. Kolb

    2008-03-31T23:59:59.000Z

    This project was one of three collaborating grants designed to understand the atmospheric chemistry and aerosol particle microphysics impacting air quality in the Mexico City Metropolitan Area (MCMA) and its urban plume. The overall effort, titled MCMA- 2006, focused on: 1) the primary emissions of fine particles and precursor gases leading to photochemical production of atmospheric oxidants and secondary aerosol particles and 2) the measurement and analysis of secondary oxidants and secondary fine particular matter (PM) production, with particular emphasis on secondary organic aerosol (SOA). MCAM-2006 pursued it goals through three main activities: 1) performance and publication of detailed analyses of extensive MCMA trace gas and fine PM measurements made by the collaborating groups and others during earlier MCMA field campaigns in 2002 and 2003; 2) deployment and utilization of extensive real-time trace gas and fine PM instrumentation at urban and downwind MCMA sites in support of the MAX-Mex/MILAGRO field measurements in March, 2006; and, 3) analyses of the 2006 MCMA data sets leading to further publications that are based on new data as well as insights from analysis and publication of the 2002/2003 field data. Thirteen archival publications were coauthored with other MCMA-2003 participants. Documented findings included a significantly improved speciated emissions inventory from on-road vehicles, a greatly enhanced understanding of the sources and atmospheric loadings of volatile organic compounds, a unique analysis of the high fraction of ambient formaldehyde from primary emission sources, a much more extensive knowledge of the composition, size distributions and atmospheric mass loadings of both primary and secondary fine PM, including the fact that the rate of MCMA SOA production greatly exceeded that predicted by current atmospheric models, and evaluations of significant errors that can arise from standard air quality monitors for ozone and nitrogen dioxide. Deployment of the Aerodyne mobile laboratory, equipped with instruments from five collaborating laboratories, at the T0 urban supersite, four downwind sites and the Tula industrial area yielded unique trace gas and fine PM data sets during the March 2006 MAXMex/MILAGRO campaign. In addition, on-road measurements as the mobile laboratory moved between sites provided extensive data on 2006 MCMA fleet averaged vehicle emissions. Analyses of 2006 data sets have yielded the identification of a close correlation between the rate of production of SOA and “Odd Oxygen” (O3 + NO2) and primary organic PM with CO in the MCMA urban plume, a more sophisticated understanding of the interplay between nitrogen oxide speciation and ozone production, the identification of significant vehicular emission sources of HCN and CH3CN (usually associated with biomass burning), characterization of the aging of primary carbonaceous PM, and updated 2006 MCMA fleet on-road trace gas and fine PM emissions. Results from analyses of 2002/2003 and 2006 emissions and ambient measurements have conveyed to Mexican air quality managers who are using these data to devise and assess air quality management strategies. All data sets and published analyses are available to DOE/ASP researchers evaluating the impact of urban emissions on regional climate.

  18. Vibronic fine structure in high-resolution x-ray absorption spectra from ion-bombarded boron nitride nanotubes

    SciTech Connect (OSTI)

    Petravic, Mladen; Peter, Robert; Varasanec, Marijana [Department of Physics and Center for Micro and Nano Sciences and Technologies, University of Rijeka, 51000 Rijeka (Croatia); Li Luhua; Chen Ying [Institute for Technology Research and Innovation, Deakin University, Geelong Waurn Ponds Campus, 3217 (Australia); Cowie, Bruce C. C. [Australian Synchrotron, Clayton VIC 3168 (Australia)

    2013-05-15T23:59:59.000Z

    The authors have applied high-resolution near-edge x-ray absorption fine structure measurements around the nitrogen K-edge to study the effects of ion-bombardment on near-surface properties of boron nitride nanotubes. A notable difference has been observed between surface sensitive partial electron yield (PEY) and bulk sensitive total electron yield (TEY) fine-structure measurements. The authors assign the PEY fine structure to the coupling of excited molecular vibrational modes to electronic transitions in NO molecules trapped just below the surface. Oxidation resistance of the boron nitride nanotubes is significantly reduced by low energy ion bombardment, as broken B-N bonds are replaced by N-O bonds involving oxygen present in the surface region. In contrast to the PEY spectra, the bulk sensitive TEY measurements on as-grown samples do not exhibit any fine structure while the ion-bombarded samples show a clear vibronic signature of molecular nitrogen.

  19. Automated algorithm for differentiation of human breast tissue using low coherence interferometry for fine needle aspiration biopsy guidance

    E-Print Network [OSTI]

    Iftimia, Nicusor V.

    Fine needle aspiration biopsy (FNAB) is a rapid and cost-effective method for obtaining a first-line diagnosis of a palpable mass of the breast. However, because it can be difficult to manually discriminate between adipose ...

  20. Speciation of Lead in a Mixed Soil Component System Using X-ray Absorption Fine Structure Spectroscopy

    E-Print Network [OSTI]

    Sparks, Donald L.

    Speciation of Lead in a Mixed Soil Component System Using X-ray Absorption Fine Structure (XAFS). Lead concentrations of 6000, 18000, and 29000 µg Pb/g solid were reacted with soil components

  1. Combustion characterization of the blend of plant coal and recovered coal fines. Technical report, December 1, 1991--February 29, 1992

    SciTech Connect (OSTI)

    Singh, S. [SS Energy Environmental International, Inc., Rockford, IL (United States); Scaroni, A.; Miller, B. [Pennsylvania State Univ., University Park, PA (United States). Combustion Lab.; Choudhry, V. [Praxis Engineers, Inc., Milpitas, CA (United States)

    1992-08-01T23:59:59.000Z

    The overall objective of this proposed research program is to determine the combustion characteristics of the blend derived from mixing a plant coal and recovered and clean coal fines from the pond. During this study, one plant coal and three blend samples will be prepared and utilized. The blend samples will be of a mixture of 90% plant coal + 10% fines, 85% plant coal + 15% fines, 80% plant coal + 20% fines having particle size distribution of 70% passing through -200 mesh size. These samples` combustion behavior will be examined in two different furnaces at Penn State University, i.e., a down-fired furnace and a drop-tube furnace. The down-fired furnace will be used mainly to measure the emissions and ash deposition study, while the drop tube furnace will be used to determine burning profile, combustion efficiency, etc.

  2. From Measurements to Sustainable Choices: Non-intrusive Fine-grained Sensing of Resource Usage in Buildings

    E-Print Network [OSTI]

    Jalali. Bahram

    From Measurements to Sustainable Choices: Non-intrusive Fine- grained Sensing of Resource Usage. Example pictures of non-intrusive pipe level water monitoring test-bed and non- intrusive appliance power

  3. Development of an Ultra-fine Coal Dewatering Technology and an Integrated Flotation-Dewatering System for Coal Preparation Plants

    SciTech Connect (OSTI)

    Wu Zhang; David Yang; Amar Amarnath; Iftikhar Huq; Scott O'Brien; Jim Williams

    2006-12-22T23:59:59.000Z

    The project proposal was approved for only the phase I period. The goal for this Phase I project was to develop an industrial model that can perform continuous and efficient dewatering of fine coal slurries of the previous flotation process to fine coal cake of {approx}15% water content from 50-70%. The feasibility of this model should be demonstrated experimentally using a lab scale setup. The Phase I project was originally for one year, from May 2005 to May 2006. With DOE approval, the project was extended to Dec. 2006 without additional cost from DOE to accomplish the work. Water has been used in mining for a number of purposes such as a carrier, washing liquid, dust-catching media, fire-retardation media, temperature-control media, and solvent. When coal is cleaned in wet-processing circuits, waste streams containing water, fine coal, and noncombustible particles (ash-forming minerals) are produced. In many coal preparation plants, the fine waste stream is fed into a series of selection processes where fine coal particles are recovered from the mixture to form diluted coal fine slurries. A dewatering process is then needed to reduce the water content to about 15%-20% so that the product is marketable. However, in the dewatering process currently used in coal preparation plants, coal fines smaller than 45 micrometers are lost, and in many other plants, coal fines up to 100 micrometers are also wasted. These not-recovered coal fines are mixed with water and mineral particles of the similar particle size range and discharged to impoundment. The wasted water from coal preparation plants containing unrecoverable coal fine and mineral particles are called tailings. With time the amount of wastewater accumulates occupying vast land space while it appears as threat to the environment. This project developed a special extruder and demonstrated its application in solid-liquid separation of coal slurry, tailings containing coal fines mostly less than 50 micron. The extruder is special because all of its auger surface and the internal barrier surface are covered with the membranes allowing water to drain and solid particles retained. It is believed that there are four mechanisms working together in the dewatering process. They are hydrophilic diffusion flow, pressure flow, agitation and air purging. Hydrophilic diffusion flow is effective with hydrophilic membrane. Pressure flow is due to the difference of hydraulic pressure between the two sides of the membrane. Agitation is provided by the rotation of the auger. Purging is achieved with the air blow from the near bottom of the extruder, which is in vertical direction.

  4. Proportions of coarse and fine clay across the Cretaceous-Tertiary boundary in Milam, Falls, and Travis Counties, Texas

    E-Print Network [OSTI]

    Smith, John Charles

    1966-01-01T23:59:59.000Z

    for the investigation Explanation of Proposed Method Location of Clay Units Investigated Previous Investigations Methods of Investigation Eield Investigations Laboratory Investigations Hesults of the lnvcstigation 15 26 Locality I Locality II Locality III... and fine clay expressed as percentages of the total clay i'rection from Locality I . 30 Lattice spacings, mineral composition, indices, and intensities of typical samples from Locality I 33 Proportions for duplicate fractionations of coarse and fine...

  5. Localised mobilisation of metals, as measured by diffusive gradients in thin-films, in soil historically treated with sewage sludge

    E-Print Network [OSTI]

    Ma, Lena

    historically treated with sewage sludge Jun Luo a,c , Hao Zhang a, , William Davison a , Ronald G. McLaren b online 11 September 2012 Keywords: Trace metals Soil Sewage sludge Mn oxide Diffusive gradients in thin was investigated in a sandy loam soil historically treated with sewage sludge. After deployment of two DGT

  6. Page 1 of 5 Quick Guide for Weed Control in Texas High Plains Grain Sorghum2009

    E-Print Network [OSTI]

    Mukhtar, Saqib

    Page 1 of 5 Quick Guide for Weed Control in Texas High Plains Grain Sorghum­2009 Brent Bean, Texas is no substitute for the herbicide product labels! It is intended to serve only as a guide for controlling weeds prior to crop emergence. Do not use on soils with less than 1% O.M. or sand, loamy sand or sandy loam

  7. Page 1 of 6 Quick Guide for Weed Control in Texas High Plains Grain Sorghum 2007

    E-Print Network [OSTI]

    Mukhtar, Saqib

    Page 1 of 6 Quick Guide for Weed Control in Texas High Plains Grain Sorghum ­ 2007 Brent Bean for the herbicide product labels! It is intended to serve only as a guide for controlling weeds in sorghum. Because emergence. Do not use on soils with less than 1% O.M. or sand, loamy sand or sandy loam textured. Good

  8. Introduction Potato Types and Uses The potato is native to the Andean region of South Potato varieties vary according to shape, flesh color

    E-Print Network [OSTI]

    Douches, David S.

    Gold, however, tubers left in the garden thaI are not frozen Yukon Gold during the winter may is not de suited to a sandy loam or a loamy sand that is well pendent on flowering, as was once believed, boiling, baking Yukon Gold, Saginaw Gold, Superior, Kennebec Medium Waxy Boiling, mashing, baking Mid

  9. 2009 Virginia Polytechnic Institute and State University 2901-1075 Virginia Cooperative Extension programs and employment are open to all, regardless of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, o

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    : Partial shade to full sun Moisture: Wet, moist, or dry Soil Type: Sandy, loam, or clay pH Range: 3.7 to 7 flowers. `Gold Flame', about 4 feet tall at maturity, is a popular cultivar because the new foliage

  10. Factors affecting distribution patterns of chlorpyrifos and permethrin applied as termiticides to soil

    E-Print Network [OSTI]

    Whiting, Philip Howard

    1994-01-01T23:59:59.000Z

    Soil models in 190-liter containers were used to evaluate the effect of soil type (sandy, silty, and clay loams), soil moisture (25%, 50%, or 100% of field capacity), and rainfall (2.5, 5.0, or 15.0 cm) on the distribution patterns of termiticides...

  11. 2009 Virginia Polytechnic Institute and State University 2901-1078 Virginia Cooperative Extension programs and employment are open to all, regardless of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, o

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Moisture: Moist to dry Soil Type: Sandy, loam, or clay pH Range: 3.7 to 7.0 Functions: Suggested uses and related species that grow well in your area. Cultivars of Euonymus fortunei: `Emerald and Gold' is a low-growing ground cover (1 to 2 feet high) which has green leaves with gold margins. `Emerald Gaiety' is a low

  12. www.ext.vt.edu Produced by Communications and Marketing, College of Agriculture and Life Sciences, Virginia Polytechnic Institute and State University, 2014

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    ? ___________________ 7.SOIL: Type Terrain Drainage Soil-less Mulch q sandy q sloped q good q pinebark q bark chips q clay q level q moderate q peat moss q plastic q loam q low q poor q other _________q other _________ q

  13. Savanna and shrubland fire behavior modeling in South Texas

    E-Print Network [OSTI]

    Streeks, Tamara Jean

    2002-01-01T23:59:59.000Z

    (Boufeioua curiipenduia (Michx. ) Torr. var. haskeii), plains bristlegrass (Setaria ieucopiia (Scribn. & Merrill) K. Schum), and alkali sacaton (Sporoboius airoides (Torr. ) Torr. ) three years prior to the initiation of this study. Cattle were excluded...). Knippa A is a fine calcareous clay loam soil that is formed in clayey and loamy materials on outwash plains; the A horizon is dark grayish brown clay with weak, fine, subangular blocky structure. Olmos B is a shallow calcareous gravelly loam soil...

  14. Innovative process for concentration of fine particle coal slurries. Technical report, March 1- May 31, 1996

    SciTech Connect (OSTI)

    Rajchel, M.; Ehrlinger, H.P.; Fonseca, A.; Mauer, R.

    1996-12-31T23:59:59.000Z

    Williams Technologies, Inc. And Clarke Rajchel Engineering are developing a technology (patent pending) to produce high quality coal water slurries from preparation plant fine coal streams. The WTI/CRE technology uses the novel implementation of high-shear cross-flow separation which replaces and enhances conventional thickening processes by surpassing normally achievable solids loadings. Dilute ultra-fine (minus 100 mesh) solids slurries can be, concentrated to greater than 60 weight percent and re-mixed, as required, with de-watered coarser fractions to produce pumpable, heavily loaded coal slurries. The permeate (filtrate) resulting from this process has been demonstrated to be crystal clear and totally free of suspended solids. The primary objective of this project was to demonstrate the WTI/CRE coal slurry production process technology at the pilot scale. The technology can enable Illinois coal producers and users to realize significant cost and environmental benefits both by eliminating fine coal waste disposal problems and producing an IGCC fuel to produce power which meets all foreseeable clean air standards. Testing was also directed at concentrating mine tailings material to produce a tailings paste which can be mine-back-filled, eliminating the need for tailings ponds. During the grant period, a laboratory-scale test apparatus (up to 3 GPM feed rate) was assembled and operated to demonstrate process performance over a range of feed temperatures and pressures. A dilute coal/water slurry from Consol, Inc.`s Rend Lake Preparation Plant was concentrated using the process to a maximum recorded solids loading of 61.9% solids by weight. Analytical results from the concentrate were evaluated by Destec Energy for suitability as an IGCC fuel.

  15. Fine-Grid Calculations for Stellar Electron and Positron Capture Rates on Fe-Isotopes

    E-Print Network [OSTI]

    Jameel-Un Nabi; Abdel Nasser Tawfik

    2011-08-23T23:59:59.000Z

    The acquisition of precise and reliable nuclear data is a prerequisite to success for stellar evolution and nucleosynthesis studies. Core-collapse simulators find it challenging to generate an explosion from the collapse of the core of massive stars. It is believed that a better understanding of the microphysics of core-collapse can lead to successful results. The weak interaction processes are able to trigger the collapse and control the lepton-to-baryon ratio ($Y_{e}$) of the core material. It is suggested that the temporal variation of $Y_{e}$ within the core of a massive star has a pivotal role to play in the stellar evolution and a fine-tuning of this parameter at various stages of presupernova evolution is the key to generate an explosion. During the presupernova evolution of massive stars, isotopes of iron, mainly $^{54,55,56}$Fe, are considered to be key players in controlling $Y_{e}$ ratio via electron capture on these nuclide. Recently an improved microscopic calculation of weak interaction mediated rates for iron isotopes was introduced using the proton-neutron quasiparticle random phase approximation (pn-QRPA) theory. The pn-QRPA theory allows a microscopic \\textit{state-by-state} calculation of stellar capture rates which greatly increases the reliability of calculated rates. The results were suggestive of some fine-tuning of the $Y_{e}$ ratio during various phases of stellar evolution. Here we present for the first time the fine-grid calculation of the electron and positron capture rates on $^{54,55,56}$Fe. Core-collapse simulators may find this calculation suitable for interpolation purposes and for necessary incorporation in the stellar evolution codes.

  16. Evaluation of an enhanced gravity-based fine-coal circuit for high-sulfur coal

    SciTech Connect (OSTI)

    Mohanty, M.K.; Samal, A.R.; Palit, A. [South Illinois University, Carbondale, IL (United States). Dept. of Mining & Mineral Resources Engineering

    2008-02-15T23:59:59.000Z

    One of the main objectives of this study was to evaluate a fine-coal cleaning circuit using an enhanced gravity separator specifically for a high sulfur coal application. The evaluation not only included testing of individual unit operations used for fine-coal classification, cleaning and dewatering, but also included testing of the complete circuit simultaneously. At a scale of nearly 2 t/h, two alternative circuits were evaluated to clean a minus 0.6-mm coal stream utilizing a 150-mm-diameter classifying cyclone, a linear screen having a projected surface area of 0.5 m{sup 2}, an enhanced gravity separator having a bowl diameter of 250 mm and a screen-bowl centrifuge having a bowl diameter of 500 mm. The cleaning and dewatering components of both circuits were the same; however, one circuit used a classifying cyclone whereas the other used a linear screen as the classification device. An industrial size coal spiral was used to clean the 2- x 0.6-mm coal size fraction for each circuit to estimate the performance of a complete fine-coal circuit cleaning a minus 2-mm particle size coal stream. The 'linear screen + enhanced gravity separator + screen-bowl circuit' provided superior sulfur and ash-cleaning performance to the alternative circuit that used a classifying cyclone in place of the linear screen. Based on these test data, it was estimated that the use of the recommended circuit to treat 50 t/h of minus 2-mm size coal having feed ash and sulfur contents of 33.9% and 3.28%, respectively, may produce nearly 28.3 t/h of clean coal with product ash and sulfur contents of 9.15% and 1.61 %, respectively.

  17. Fine-grid calculations for stellar electron and positron capture rates on Fe isotopes

    SciTech Connect (OSTI)

    Nabi, Jameel-Un, E-mail: jameel@giki.edu.pk [Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Faculty of Engineering Sciences (Pakistan)] [Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Faculty of Engineering Sciences (Pakistan); Tawfik, Abdel Nasser, E-mail: a.tawfik@eng.mti.edu.eg [MTI University, Egyptian Center for Theoretical Physics (ECTP) (Egypt)

    2013-03-15T23:59:59.000Z

    The acquisition of precise and reliable nuclear data is a prerequisite to success for stellar evolution and nucleosynthesis studies. Core-collapse simulators find it challenging to generate an explosion from the collapse of the core of massive stars. It is believed that a better understanding of the microphysics of core-collapse can lead to successful results. The weak interaction processes are able to trigger the collapse and control the lepton-to-baryon ratio (Y{sub e}) of the corematerial. It is suggested that the temporal variation of Y{sub e} within the core of a massive star has a pivotal role to play in the stellar evolution and a fine-tuning of this parameter at various stages of presupernova evolution is the key to generate an explosion. During the presupernova evolution of massive stars, isotopes of iron, mainly {sup 54-56}Fe, are considered to be key players in controlling Y{sub e} ratio via electron capture on these nuclides. Recently an improved microscopic calculation of weak-interaction-mediated rates for iron isotopes was introduced using the proton-neutron quasiparticle random-phase-approximation (pn-QRPA) theory. The pn-QRPA theory allows a microscopic state-by-state calculation of stellar capture rates which greatly increases the reliability of calculated rates. The results were suggestive of some fine-tuning of the Y{sub e} ratio during various phases of stellar evolution. Here we present for the first time the fine-grid calculation of the electron and positron capture rates on {sup 54-56}Fe. The sensitivity of the pn-QRPA calculated capture rates to the deformation parameter is also studied in this work. Core-collapse simulators may find this calculation suitable for interpolation purposes and for necessary incorporation in the stellar evolution codes.

  18. PRAM C:a new programming environment for fine-grain and coarse-grain parallelism.

    SciTech Connect (OSTI)

    Brown, Jonathan Leighton; Wen, Zhaofang.

    2004-11-01T23:59:59.000Z

    In the search for ''good'' parallel programming environments for Sandia's current and future parallel architectures, they revisit a long-standing open question. Can the PRAM parallel algorithms designed by theoretical computer scientists over the last two decades be implemented efficiently? This open question has co-existed with ongoing efforts in the HPC community to develop practical parallel programming models that can simultaneously provide ease of use, expressiveness, performance, and scalability. Unfortunately, no single model has met all these competing requirements. Here they propose a parallel programming environment, PRAM C, to bridge the gap between theory and practice. This is an attempt to provide an affirmative answer to the PRAM question, and to satisfy these competing practical requirements. This environment consists of a new thin runtime layer and an ANSI C extension. The C extension has two control constructs and one additional data type concept, ''shared''. This C extension should enable easy translation from PRAM algorithms to real parallel programs, much like the translation from sequential algorithms to C programs. The thin runtime layer bundles fine-grained communication requests into coarse-grained communication to be served by message-passing. Although the PRAM represents SIMD-style fine-grained parallelism, a stand-alone PRAM C environment can support both fine-grained and coarse-grained parallel programming in either a MIMD or SPMD style, interoperate with existing MPI libraries, and use existing hardware. The PRAM C model can also be integrated easily with existing models. Unlike related efforts proposing innovative hardware with the goal to realize the PRAM, ours can be a pure software solution with the purpose to provide a practical programming environment for existing parallel machines; it also has the potential to perform well on future parallel architectures.

  19. Dewatering studies of fine clean coal. Technical report, March 1, 1992--May 31, 1992

    SciTech Connect (OSTI)

    Parekh, B.K. [Kentucky Univ., Lexington, KY (United States). Center for Applied Energy Research

    1992-10-01T23:59:59.000Z

    Physical cleaning of ultra-fine coal using an advanced froth flotation technique provides a low ash product, however, due to high surface area of particles the amount of water associated with clean coal is high. Economic removal of water to 20 percent or lower moisture level from the clean coal froth will be important for commercial applicability of advanced froth flotation processes. The main objective of the present research program is to study and understand the dewatering characteristics of ultra-fine clean coal and to develop process parameters to effectively reduce the moisture to less than 20 percent in the clean coal product. The research approach under investigation utilizes synergistic effect of metal ions and surfactant to lower the moisture of clean coal using a conventional vacuum dewatering technique. The studies have identified a combination of metal ions and surfactant found to be effective in providing a 22 percent moisture filter cake. During the third quarter, efforts were made to understand reagent adsorption mechanism. Adsorption studies indicated that the presence of metal ions enhanced adsorption of surfactant. It appears that metal ions induced floc formation at pH {approximately}7.0, which are hydrophilic in nature, however addition of surfactant restores the hydrophobicity. Organic polymers along with metal ions were found to be effective in dewatering of fine coal. Continuous filtration tests conducted using a drum filter provided a filter cake containing 24 percent moisture. Additional studies on mechanism of adsorption and continuous filtration using AC Electro-Coagulation will be conducted in the next quarter.

  20. Innovative process for concentration of fine particle coal slurries. Technical report, September 1--November 30, 1995

    SciTech Connect (OSTI)

    Rajchel, M. [Williams Technologies, Inc. (United States)]|[Clarke Rajchel Engineering, Arvada, CO (United States); Harnett, D. [Williams Technologies, Inc. (United States); Fonseca, A. [CONSOL, Pittsburgh, PA (United States); Maurer, R. [Destec (United States); Ehrlinger, H.P.

    1995-12-31T23:59:59.000Z

    Williams Technologies, Inc. and Clarke Rajchel Engineering are developing a technology (patent pending) to produce high quality coal water slurries from preparation plant fine coal streams. The WTI/CRE technology uses the novel implementation of high-shear cross-flow separation which replaces and enhances conventional thickening processes by surpassing normally achievable solids loadings. Dilute ultra-fine (minus 100 mesh) solids slurries can be concentrated to greater than 60 weight percent and re-mixed, as required, with de-watered coarser fractions to produce pumpable, heavily loaded coal slurries. The permeate (filtrate) resulting from this process has been demonstrated to be crystal clear and totally free of suspended solids. The primary objective of this project is to demonstrate the WTI/CRE coal slurry production process technology at the pilot scale. The technology will enable Illinois coal producers and users to realize significant coast and environmental benefits both by eliminating fine coal waste disposal problems and producing an IGCC fuel to produce power which meets all foreseeable clean air standards. In addition, testing is also directed at concentrating mine tailings material to produce a tailings paste which can be mine-back-, filled and thus eliminate the need for tailings ponds. This reporting period, September 1, 1995 through November 30, 1995, marked the inception of this project. During this period Task No. 1, Procurement and Set-Up, was completed. The pilot plant apparatus was constructed at the SIU Coal Research Center in Carterville, Illinois. All equipment and feedstock were received at the site.

  1. Development of a liquid cyclone process to produce hull-free cottonseed flour from cottonseed fines

    E-Print Network [OSTI]

    Good, Richard Lanier

    1973-01-01T23:59:59.000Z

    Directed by: Prof. T. A. Noyes This thesis represents further study into the use of the liquid cyclone to produce a food quality cottonseed flour from the fines fraction from the material stream of a cottonseed oil mill. In the course... cyclone system and piping. New cyclone system and piping pinker. Stone mill. Plow diagram of the first pretreatment. Dyne Screen Flow diagram of the second pretreatment Open and closed view of the pin mill. 10 13 13 19 23 24 25 27 28 29...

  2. SENSOR FOR INDIVIDUAL BURNER CONTROL OF FIRING RATE, FUEL-AIR RATIO, AND COAL FINENESS CORRELATION

    SciTech Connect (OSTI)

    Wayne Hill; Roger Demler

    2005-07-01T23:59:59.000Z

    To minimize program cost, additional testing is planned to be performed in concert with EPRI-funded testing at the Coal Flow Test Facility in late July. This will be followed by field testing to be performed by EPRI in August. The minimal effort put into the analysis during this reporting period revealed surprising variation in the trends of the dynamic signatures over time. It is unclear whether these temporal trends are related to noise or to the actual dynamics. Further data analysis and fine-tuning of the algorithm will be done upon arrival of the data to be collected in the near future.

  3. Solar abundances and helioseismology: fine structure spacings and separation ratios of low-degree p modes

    E-Print Network [OSTI]

    Sarbani Basu; William J. Chaplin; Yvonne Elsworth; Roger New; Aldo M. Serenelli; Graham A. Verner

    2006-10-02T23:59:59.000Z

    We have used 4752 days of data collected by the Birmingham Solar-Oscillations Network (BiSON) to determine very precise oscillation frequencies of acoustic low-degree modes that probe the solar core. We compare the fine (small frequency) spacings and frequency separation ratios formed from these data with those of different solar models. We find that models constructed with low metallicity are incompatible with the observations. The results provide strong support for lowering the theoretical uncertainties on the neutrino fluxes. These uncertainties had recently been raised due to the controversy over the solar abundances.

  4. Gas-Mediated Impact Dynamics in Fine-Grained Granular Materials

    E-Print Network [OSTI]

    John R. Royer; Eric I. Corwin; Peter J. Eng; Heinrich M. Jaeger

    2007-07-17T23:59:59.000Z

    Non-cohesive granular media exhibit complex responses to sudden impact that often differ from those of ordinary solids and liquids. We investigate how this response is mediated by the presence of interstitial gas between the grains. Using high-speed x-ray radiography we track the motion of a steel sphere through the interior of a bed of fine, loose granular material. We find a crossover from nearly incompressible, fluid-like behavior at atmospheric pressure to a highly compressible, dissipative response once most of the gas is evacuated. We discuss these results in light of recent proposals for the drag force in granular media.

  5. Pseudophasic extraction method for the separation of ultra-fine minerals

    DOE Patents [OSTI]

    Chaiko, David J. (Naperville, IL)

    2002-01-01T23:59:59.000Z

    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.

  6. Integration of stripping of fines slurry in a coking and gasification process

    DOE Patents [OSTI]

    DeGeorge, Charles W. (Chester, NJ)

    1980-01-01T23:59:59.000Z

    In an integrated fluid coking and gasification process wherein a stream of fluidized solids is passed from a fluidized bed coking zone to a second fluidized bed and wherein entrained solid fines are recovered by a wet scrubbing process and wherein the resulting solids-liquid slurry is stripped to remove acidic gases, the stripped vapors of the stripping zone are sent to the gas cleanup stage of the gasification product gas. The improved stripping integration is particularly useful in the combination coal liquefaction process, fluid coking of bottoms of the coal liquefaction zone and gasification of the product coke.

  7. Avoiding the blue spectrum and the fine-tuning of initial conditions in hybrid inflation

    E-Print Network [OSTI]

    Sebastien Clesse; Jonathan Rocher

    2009-04-20T23:59:59.000Z

    Hybrid inflation faces two well-known problems: the blue spectrum of the non-supersymmetric version of the model and the fine-tuning of the initial conditions of the fields leading to sufficient inflation to account for the standard cosmological problems. They are investigated by studying the exact two-fields dynamics instead of assuming slow-roll. When the field values are restricted to be less than the reduced Planck mass, a non-negligible part of the initial condition space (around 15% depending on potential parameters) leads to successful inflation. Most of it is located outside the usual inflationary valley and organized in continuous patterns instead of being isolated as previously found. Their existence is explained and their properties are studied. This shows that no excessive fine-tuning is required for successful hybrid inflation. Moreover, by extending the initial condition space to planckian-like or super-planckian values, inflation becomes generically sufficiently long and can produce a red-tilted scalar power spectrum due to slow-roll violations. The robustness of these properties is confirmed by conducting our analysis on three other models of hybrid-type inflation in various framework: "smooth" and "shifted" inflation in SUSY and SUGRA, and "radion assisted" gauge inflation. A high percentage of successful inflation for smooth hybrid inflation (up to 80%) is observed.

  8. Fabrication of fine-grain tantalum diffusion barrier tube for Nb{sub 3}Sn conductors

    SciTech Connect (OSTI)

    Hartwig, K. T.; Balachandran, S.; Mezyenski, R.; Seymour, N. [Department of Mechanical Engineering, Texas A and M University, TX 77843 (United States); Robinson, J.; Barber, R. E. [Shear Form Inc, 207 Dellwood St, Bryan 77801 (United States)

    2014-01-27T23:59:59.000Z

    Diffusion barriers used in Nb{sub 3}Sn wire are often fabricated by wrapping Ta sheet into a tube with an overlap seam. A common result of such practice is non-uniform deformation in the Ta sheet as it thins by wire drawing because of non-uniform grain size and texture in the original Ta sheet. Seamless Ta tube with a fine-grain and uniform microstructure would be much better for the diffusion barrier application, but such material is expensive and difficult to manufacture. This report presents results on a new fabrication strategy for Ta tube that shows promise for manufacture of less costly tube with an improved microstructure. The fabrication method begins with seam-welded tube but gives a fine-grain uniform microstructure with little difference between the longitudinal seam weld region and the parent metal after post-weld processing. Severe plastic deformation processing (SPD) applied by area reduction extrusion and tube equal channel angular extrusion (tECAE) are used to refine and homogenize the microstructure. Microstructure and mechanical property results are presented for Ta tubes fabricated by this new processing strategy.

  9. Low-energy fine-structure resonances in photoionization of O ii

    SciTech Connect (OSTI)

    Nahar, Sultana N.; Pradhan, Anil K. [Department of Astronomy, Ohio State University, Columbus, Ohio 43210 (United States); Montenegro, Maximiliano [Facultad de Educaci, Pontificia Universidad Catholica de Chile, Avda Vicua Mackenna 4860, Macul, Santiago (Chile); Eissner, Werner [Institut fuer Theoretische Physik, Teilinstitut 1, D-70550 Stuttgart (Germany)

    2010-12-15T23:59:59.000Z

    Resonant features in low-energy photoionization cross sections are reported in coupled-channel calculations for O ii including relativistic fine structure. The calculations reveal extensive near-threshold resonant structures in the small energy region between the fine structure levels of the ground state 2p{sup 2}({sup 3}P{sub 0,1,2}) of the residual ion O iii. Although the resonances have not yet been observed, they are similar to other experimentally observed features. They are expected to significantly enhance the very-low-temperature dielectronic recombination rates, potentially leading to the resolution of an outstanding nebular abundances anomaly. Higher energy partial and total photoionization cross sections of the ground configuration levels 2p{sup 3}({sup 4}S{sub 3/2}{sup o},{sup 2}D{sub 3/2,5/2}{sup o},{sup 2}P{sub 1/2,3/2}{sup o}) are found to be in agreement with experimental measurements on synchrotron-based photon sources [1-3], thereby identifying the excited O iii levels present in the ion beams. These are also the first results from a recently developed version of Breit-Pauli R-matrix (BPRM) codes, with inclusion of two-body magnetic interaction terms. The improved relativistic treatment could be important for other astrophysical applications and for more precise benchmarking of experimental measurements.

  10. The Fine-Structure of the Net-Circular Polarization in a Sunspot Penumbra

    E-Print Network [OSTI]

    A. Tritschler; D. A. N. Mueller; R. Schlichenmaier; H. J. Hagenaar

    2007-10-24T23:59:59.000Z

    We present novel evidence for a fine structure observed in the net-circular polarization (NCP) of a sunspot penumbra based on spectropolarimetric measurements utilizing the Zeeman sensitive FeI 630.2 nm line. For the first time we detect a filamentary organized fine structure of the NCP on spatial scales that are similar to the inhomogeneities found in the penumbral flow field. We also observe an additional property of the visible NCP, a zero-crossing of the NCP in the outer parts of the center-side penumbra, which has not been recognized before. In order to interprete the observations we solve the radiative transfer equations for polarized light in a model penumbra with embedded magnetic flux tubes. We demonstrate that the observed zero-crossing of the NCP can be explained by an increased magnetic field strength inside magnetic flux tubes in the outer penumbra combined with a decreased magnetic field strength in the background field. Our results strongly support the concept of the uncombed penumbra.

  11. Engineering development of advanced physical fine coal cleaning technologies: Froth flotation

    SciTech Connect (OSTI)

    Not Available

    1991-01-01T23:59:59.000Z

    This document a quarterly report prepared in accordance with the project reporting requirements covering the period from July 1, 1992 to September 30, 1992. This report provides a summary of the technical work undertaken during this period, highlighting the major results. A brief description of the work done prior to this quarter is provided in this report under the task headings. The overall project scope of the engineering development project is to conceptually develop a commercial flowsheet to maximize pyritic sulfur reduction at practical energy recovery values. This is being accomplished by utilizing the basic research data on the surface properties of coal, mineral matter and pyrite obtained from the Coal Surface Control for Advanced Fine Coal Flotation Project, to develop this conceptual flowsheet. The conceptual flowsheet must be examined to identify critical areas that need additional design data. This data will then be developed using batch and semi-continuous bench scale testing. In addition to actual bench scale testing, other unit operations from other industries processing fine material will be reviewed for potential application and incorporated into the design if appropriate. The conceptual flowsheet will be revised based on the results of the bench scale testing and areas will be identified that need further larger scale design data verification, to prove out the design.

  12. Fine structure of the red luminescence band in undoped GaN

    SciTech Connect (OSTI)

    Reshchikov, M. A., E-mail: mreshchi@vcu.edu [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States); Usikov, A. [Nitride Crystals, Inc., 181E Industry Ct., Ste. B, Deer Park, New York 11729 (United States); Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, 49 Kronverkskiy Ave., 197101 Saint Petersburg (Russian Federation); Helava, H.; Makarov, Yu. [Nitride Crystals, Inc., 181E Industry Ct., Ste. B, Deer Park, New York 11729 (United States)

    2014-01-20T23:59:59.000Z

    Many point defects in GaN responsible for broad photoluminescence (PL) bands remain unidentified. Their presence in thick GaN layers grown by hydride vapor phase epitaxy (HVPE) detrimentally affects the material quality and may hinder the use of GaN in high-power electronic devices. One of the main PL bands in HVPE-grown GaN is the red luminescence (RL) band with a maximum at 1.8?eV. We observed the fine structure of this band with a zero-phonon line (ZPL) at 2.36?eV, which may help to identify the related defect. The shift of the ZPL with excitation intensity and the temperature-related transformation of the RL band fine structure indicate that the RL band is caused by transitions from a shallow donor (at low temperature) or from the conduction band (above 50?K) to an unknown deep acceptor having an energy level 1.130?eV above the valence band.

  13. Nontoxic chemical process for in situ permeability enhancement and accelerated decontamination of fine-grain subsurface sediments

    DOE Patents [OSTI]

    Kansa, Edward J. (Livermore, CA); Wijesinghe, Ananda M. (Tracy, CA); Viani, Brian E. (Oakland, CA)

    1997-01-01T23:59:59.000Z

    The remediation of heterogeneous subsurfaces is extremely time consuming and expensive with current and developing technologies. Although such technologies can adequately remove contaminants in the high hydraulic conductivity, coarse-grained sediments, they cannot access the contaminated low hydraulic conductivity fine-grained sediments. The slow bleed of contaminants from the fine-grained sediments is the primary reason why subsurface remediation is so time-consuming and expensive. This invention addresses the problem of remediating contaminated fine-grained sediments. It is intended that, in the future, a heterogeneous site be treated by a hybrid process that first remediates the high hydraulic conductivity, coarse-grained sediments, to be followed by the process, described in this invention, to treat the contaminated low hydraulic conductivity fine-grained sediments. The invention uses cationic flocculents and organic solvents to collapse the swelling negative double layer surrounding water saturated clay particles, causing a flocculated, cracked clay structure. The modification of the clay fabric in fine-grained sediments dramatically increases the hydraulic conductivity of previously very tight clays many orders of magnitude.

  14. Nontoxic chemical process for in situ permeability enhancement and accelerated decontamination of fine-grain subsurface sediments

    DOE Patents [OSTI]

    Kansa, E.J.; Wijesinghe, A.M.; Viani, B.E.

    1997-01-14T23:59:59.000Z

    The remediation of heterogeneous subsurfaces is extremely time consuming and expensive with current and developing technologies. Although such technologies can adequately remove contaminants in the high hydraulic conductivity, coarse-grained sediments, they cannot access the contaminated low hydraulic conductivity fine-grained sediments. The slow bleed of contaminants from the fine-grained sediments is the primary reason why subsurface remediation is so time-consuming and expensive. This invention addresses the problem of remediating contaminated fine-grained sediments. It is intended that, in the future, a heterogeneous site be treated by a hybrid process that first remediates the high hydraulic conductivity, coarse-grained sediments, to be followed by the process, described in this invention, to treat the contaminated low hydraulic conductivity fine-grained sediments. The invention uses cationic flocculants and organic solvents to collapse the swelling negative double layer surrounding water saturated clay particles, causing a flocculated, cracked clay structure. The modification of the clay fabric in fine-grained sediments dramatically increases the hydraulic conductivity of previously very tight clays many orders of magnitude. 8 figs.

  15. Task 2.10 - Advanced Sampling and Analysis of Fine Particulates

    SciTech Connect (OSTI)

    Donald P. McCollor; Kurt E. Eyland

    1998-01-01T23:59:59.000Z

    The objectives of this study are to develop a sampling method to capture the fine particulate and classiyi the particulate according to their size and chemistry. When developing the sampling method, two criteria need to be met: 1) the particulate are randomly dispersed on the sampling media and 2) the sampling media can be put directly into a scanning electron microscope (SEM) for analysis to prevent any alteration of the particulate. Several methods for the sampling and analysis of fine particulate are to be tested. Each sampling test will be analyzed using the FPT technique for collecting the size, shape, and chemical composition of 1500 to 2000 individual fine particulate. The FPT data will be classified using cluster analysis and principal component analysis to provide a classification system for these particles. As reported previously, particulate samples were collected using the advanced hybrid particulate collector (AHPC) on the inlet port of the particulate test combustor (PTC) when the Absaloka coal was burned in early April. The samples were collected at the inlet rather than the outlet port because of the loading that was expected and the temperature at which the PTC was run. Samples at the inlet were expected to see a much greater particulate loading than at the outlet because of the efficiency of the particulate collection device on the PTC. Also, polycarbonate filters cannot withstand temperatures above 230oC for long periods of time; therefore, a quick loading time was required. The samples were briefly scanned and photographed using the SEM to determine the best particulate loading time. The particulate were too close together on the 20- and 30-second polycarbonate filters to be able to analyze individual particles. The particle dispersion on the vitreous carbon substrate appeared to be the best of the four samples. Aerosols were produced from pure 1.0 M aqueous solutions of NaCl, Na2S04, (NHq)2SOo, NHqNO~, and K20 (KOH) using a Tri-Jet Model 3460 aerosol generator and collected by direct impingement on a vitreous carbon substrate. Because NaCl is the normal aerosol produced with the generator, it was briefly examined using SEM to determine the degree of dispersion. Good dispersion with nearly all particulate size below 2 pm and the majority in the O.1-pm range was achieved with a substrate collection time of 2-3 minutes. The brief examination also demonstrated that the sample could be introduced directly into the SEM for analysis with no prior carbon coating or other preparation and that charging of the sample was minimal.

  16. Resistance spot welding of ultra-fine grained steel sheets produced by constrained groove pressing: Optimization and characterization

    SciTech Connect (OSTI)

    Khodabakhshi, F.; Kazeminezhad, M., E-mail: mkazemi@sharif.edu; Kokabi, A.H.

    2012-07-15T23:59:59.000Z

    Constrained groove pressing as a severe plastic deformation method is utilized to produce ultra-fine grained low carbon steel sheets. The ultra-fine grained sheets are joined via resistance spot welding process and the characteristics of spot welds are investigated. Resistance spot welding process is optimized for welding of the sheets with different severe deformations and their results are compared with those of as-received samples. The effects of failure mode and expulsion on the performance of ultra-fine grained sheet spot welds have been investigated in the present paper and the welding current and time of resistance spot welding process according to these subjects are optimized. Failure mode and failure load obtained in tensile-shear test, microhardness, X-ray diffraction, transmission electron microscope and scanning electron microscope images have been used to describe the performance of spot welds. The region between interfacial to pullout mode transition and expulsion limit is defined as the optimum welding condition. The results show that optimum welding parameters (welding current and welding time) for ultra-fine grained sheets are shifted to lower values with respect to those for as-received specimens. In ultra-fine grained sheets, one new region is formed named recrystallized zone in addition to fusion zone, heat affected zone and base metal. It is shown that microstructures of different zones in ultra-fine grained sheets are finer than those of as-received sheets. - Highlights: Black-Right-Pointing-Pointer Resistance spot welding process is optimized for joining of UFG steel sheets. Black-Right-Pointing-Pointer Optimum welding current and time are decreased with increasing the CGP pass number. Black-Right-Pointing-Pointer Microhardness at BM, HAZ, FZ and recrystallized zone is enhanced due to CGP.

  17. He I vector magnetic field maps of a sunspot and its superpenumbral fine-structure

    E-Print Network [OSTI]

    Schad, T A; Lin, H; Tritschler, A

    2015-01-01T23:59:59.000Z

    Advanced inversions of high-resolution spectropolarimetric observations of the He I triplet at 1083 nm are used to generate unique maps of the chromospheric magnetic field vector across a sunspot and its superpenumbral canopy. The observations were acquired by the Facility Infrared Spectropolarimeter (FIRS) at the Dunn Solar Telescope (DST) on 29 January 2012. Multiple atmospheric models are employed in the inversions, as superpenumbral Stokes profiles are dominated by atomic-level polarization while sunspot profiles are Zeeman-dominated but also exhibit signatures perhaps induced by symmetry breaking effects of the radiation field incident on the chromospheric material. We derive the equilibrium magnetic structure of a sunspot in the chromosphere, and further show that the superpenumbral magnetic field does not appear finely structured, unlike the observed intensity structure. This suggests fibrils are not concentrations of magnetic flux but rather distinguished by individualized thermalization. We also dire...

  18. Biomimetic synthesis of modified calcium phosphate fine powders and their in vitro studies

    SciTech Connect (OSTI)

    Gergulova, R., E-mail: rumigg@yahoo.com; Tepavitcharova, S., E-mail: rumigg@yahoo.com; Rabadjieva, D., E-mail: rumigg@yahoo.com; Sezanova, K., E-mail: rumigg@yahoo.com; Ilieva, R., E-mail: rumigg@yahoo.com [Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 11, 1113 Sofia (Bulgaria); Alexandrova, R.; Andonova-Lilova, B. [Institute of Experimental Morphology, Pathology and Anthropology with Museum, BAS, Acad. G. Bonchev Str., Bl. 25, Sofia (Bulgaria)

    2013-12-16T23:59:59.000Z

    Biomimetic approach and subsequent high-temperature treatment were used to synthesize ion modified calcium phosphate fine powders. Thus, using Simulated Body Fluid (SBF) as an ion modifier, a bi-phase mixture of ion modified ?-tricalcium phosphate and hydroxyapatite (?-TCP + HA) was prepared. The use of SBF electrolyte solution enriched with Mg{sup 2+} or Zn{sup 2+} yielded monophase ?-tricalcium phosphate additionally modified with Mg{sup 2+} or Zn{sup 2+} (Mg-?-TCP or Zn-?-TCP). The in vitro behavior of the prepared powders on cell viability and proliferation of murine BALB/c 3T3 fibroblasts and of human Lep 3 cells was studied by MTT test assays and Mosmann method after 72 h incubation. The relative cell viability was calculated.

  19. Test of a fine pitch SOI pixel detector with laser beam

    E-Print Network [OSTI]

    Yi Liu; Yunpeng Lu; Xudong Ju; Qun Ouyang

    2015-04-15T23:59:59.000Z

    A silicon pixel detector with fine pitch size of 19x19 um, developed base on SOI (silicon on insulator) technology, was tested under the illumination of infrared laser pulses. As an alternative way to particle beam tests, the laser pulses were tuned to very short duration and small transverse profile to simulate the tracks of MIPs (minimum ionization particles) in silicon. Hit cluster sizes were measured with focused laser pulses propagating through the SOI detector perpendicular to its surface and most of the induced charge was found to be collected inside the seed pixel. For the first time, the signal amplitude as a function of the applied bias voltage was measured for this SOI detector, deepening understanding of its depletion characteristics.

  20. Test of a fine pitch SOI pixel detector with laser beam

    E-Print Network [OSTI]

    Liu, Yi; Ju, Xudong; Ouyang, Qun

    2015-01-01T23:59:59.000Z

    A fine pitch pixel detector, developed on SOI (Silicon on Insulator) technology, has been tested under the illumination of infrared laser pulses. As an alternative way beside particel beam test, the laser pulses are tuned to very short duration and small transverse profile to simulate tracks of MIPs (Minimum Ionization Particles) in silicon. Hit cluster size and substrate depletion characteristics of this SOI detector are obtained. When focused laser pulses propagate through SOI detector perpendicularly to its surface, the hit cluster is measured, and most of signal charges are collected directly by the seed pixel. The signal amplitude as a function of applied bias voltage has been measured on this SOI detector for the first time, which helps us better understand of depletion characteristics.

  1. Fine and hyperfine structure of P-levels in muonic hydrogen

    E-Print Network [OSTI]

    A. P. Martynenko

    2006-10-25T23:59:59.000Z

    Corrections of orders $\\alpha^5$ and $\\alpha^6$ are calculated in the fine structure interval $\\Delta E^{fs}=E(2P_{3/2})-E(2P_{1/2})$ and in the hyperfine structure of the energy levels $2P_{1/2}$ and $2P_{3/2}$ in muonic hydrogen. The obtained numerical values $\\Delta E^{fs}= 8352.08 \\mu eV$, $\\Delta \\tilde E^{hfs}(2P_{1/2})=7964.36 \\mu eV$, $\\Delta \\tilde E^{hfs}(2P_{3/2})=3392.59 \\mu eV$ can be considered as a reliable estimate for the comparison with corresponding experimental data and for the extraction of the experimental value of the Lamb shift $(2P-2S)$ in muonic hydrogen.

  2. Fine structure of the Poynting-Robertson effect for a luminous spinning relativistic star

    E-Print Network [OSTI]

    Jae Sok Oh; Hongsu Kim; Hyung Mok Lee

    2010-11-13T23:59:59.000Z

    As a sequel to our recent works challenging toward the systematic inclusion of the effect of radiation on the trajectory of a test particle orbiting around a luminous spinning relativistic star eventually aiming at its application to the accretion flow. We explore in the present work the fine structure of the trajectory of test particle just entering the ``suspension orbit" under the purpose of a detailed investigation of test particle's trajectory in the vicinity of the ``suspension orbit". We end up with a rather puzzling behavior that, contrary to our expectation, the specific angular momentum of the test particle instantly rises instead of decreasing monotonically just before the test particle enters the ``suspension orbit".

  3. Solution spectroelectrochemical cell for in situ X-ray absorption fine structure

    SciTech Connect (OSTI)

    Antonio, M.R.; Soderholm, L. [Argonne National Lab., IL (United States). Chemistry Div.; Song, I. [Case Western Reserve Univ., Cleveland, OH (United States)

    1995-06-12T23:59:59.000Z

    A purpose-built spectroelectrochemical cell for in situ fluorescence XAFS (X-ray Absorption Fine Structure) measurements of bulk solution species during constant-potential electrolysis is described. The cell performance was demonstrated by the collection of europium L{sub 3}-edge XANES (X-ray Absorption Near Edge Structure) throughout the course of electrolysis of an aqueous solution of EuCl{sub 3}{center_dot}6H{sub 2}O in 1 M H{sub 2}SO{sub 4}. The europium L{sub 3}-edge resonances reported here for the Eu{sup III} and Eu{sup II} ions demonstrate that their 2p{sub 3/2} {yields} 5d electronic transition probabilities are not the same.

  4. The variation of the fine structure constant: testing the dipole model with thermonuclear supernovae

    E-Print Network [OSTI]

    Kraiselburd, Lucila; Negrelli, Carolina; Berro, Enrique García

    2014-01-01T23:59:59.000Z

    The large-number hypothesis conjectures that fundamental constants may vary. Accordingly, the spacetime variation of fundamental constants has been an active subject of research for decades. Recently, using data obtained with large telescopes a phenomenological model in which the fine structure constant might vary spatially has been proposed. We test whether this hypothetical spatial variation of {\\alpha}, which follows a dipole law, is compatible with the data of distant thermonuclear supernovae. Unlike previous works, in our calculations we consider not only the variation of the luminosity distance when a varying {\\alpha} is adopted, but we also take into account the variation of the peak luminosity of Type Ia supernovae resulting from a variation of {\\alpha}. This is done using an empirical relation for the peak bolometric magnitude of thermonuclear supernovae that correctly reproduces the results of detailed numerical simulations. We find that there is no significant difference between the several phenome...

  5. Engineering development of advanced physical fine coal cleaning technologies: Froth flotation

    SciTech Connect (OSTI)

    Not Available

    1993-02-12T23:59:59.000Z

    The Department of Energy (DOE) awarded a contract entitled Engineering Development of Advanced Physical Fine Coal Cleaning Technology - Froth Flotation'', to ICF Kaiser Engineers with the following team members, Ohio Coal Development Office, Babcock and Wilcox, Consolidation Coal Company, Eimco Process Equipment Company, Illinois State Geological Survey, Virginia Polytechnic Institute and State University, Process Technology, Inc. This document a quarterly report prepared in accordance with the project reporting requirements covering the period from July 1, 1992 to September 30, 1992. This report provides a summary of the technical work undertaken during this period, highlighting the major results. A brief description of the work done prior to this quarter is provided in this report under the task headings.

  6. MHD wave modes resolved in fine-scale chromospheric magnetic structures

    E-Print Network [OSTI]

    Verth, G

    2015-01-01T23:59:59.000Z

    Within the last decade, due to significant improvements in the spatial and temporal resolution of chromospheric data, magnetohydrodynamic (MHD) wave studies in this fascinating region of the Sun's atmosphere have risen to the forefront of solar physics research. In this review we begin by reviewing the challenges and debates that have manifested in relation to MHD wave mode identification in fine-scale chromospheric magnetic structures, including spicules, fibrils and mottles. Next we go on to discuss how the process of accurately identifying MHD wave modes also has a crucial role to play in estimating their wave energy flux. This is of cardinal importance for estimating what the possible contribution of MHD waves is to solar atmospheric heating. Finally, we detail how such advances in chromospheric MHD wave studies have also allowed us, for the first time, to implement cutting-edge magnetoseismological techniques that provide new insight into the sub-resolution plasma structuring of the lower solar atmospher...

  7. Study on fine geological modelling of the fluvial sandstone reservoir in Daqing oilfield

    SciTech Connect (OSTI)

    Zhoa Han-Qing [Daqing Research Institute, Helongjiang (China)

    1997-08-01T23:59:59.000Z

    These paper aims at developing a method for fine reservoir description in maturing oilfields by using close spaced well logging data. The main productive reservoirs in Daqing oilfield is a set of large fluvial-deltaic deposits in the Songliao Lake Basin, characterized by multi-layers and serious heterogeneities. Various fluvial channel sandstone reservoirs cover a fairly important proportion of reserves. After a long period of water flooding, most of them have turned into high water cut layers, but there are considerable residual reserves within them, which are difficult to find and tap. Making fine reservoir description and developing sound a geological model is essential for tapping residual oil and enhancing oil recovery. The principal reason for relative lower precision of predicting model developed by using geostatistics is incomplete recognition of complex distribution of fluvial reservoirs and their internal architecture`s. Tasking advantage of limited outcrop data from other regions (suppose no outcrop data available in oilfield) can only provide the knowledge of subtle changing of reservoir parameters and internal architecture. For the specific geometry distribution and internal architecture of subsurface reservoirs (such as in produced regions) can be gained only from continuous infilling logging well data available from studied areas. For developing a geological model, we think the first important thing is to characterize sandbodies geometries and their general architecture`s, which are the framework of models, and then the slight changing of interwell parameters and internal architecture`s, which are the contents and cells of the model. An excellent model should possess both of them, but the geometry is the key to model, because it controls the contents and cells distribution within a model.

  8. Fatigue and Creep-Fatigue Deformation of an Ultra-Fine Precipitate Strengthened Advanced Austenitic Alloy

    SciTech Connect (OSTI)

    M.C. Carroll; L.J. Carroll

    2012-10-01T23:59:59.000Z

    An advanced austenitic alloy, HT-UPS (high-temperature ultrafine-precipitation-strengthened), has been identified as an ideal candidate material for the structural components of fast reactors and energy-conversion systems. HT-UPS alloys demonstrate improved creep resistance relative to 316 stainless steel (SS) through additions of Ti and Nb, which precipitate to form a widespread dispersion of stable nanoscale metallic carbide (MC) particles in the austenitic matrix. The low-cycle fatigue and creep-fatigue behavior of an HT-UPS alloy have been investigated at 650 °C and a 1.0% total strain, with an R-ratio of -1 and hold times at peak tensile strain as long as 150 min. The cyclic deformation response of HT-UPS is directly compared to that of standard 316 SS. The measured values for total cycles to failure are similar, despite differences in peak stress profiles and in qualitative observations of the deformed microstructures. Crack propagation is primarily transgranular in fatigue and creep-fatigue of both alloys at the investigated conditions. Internal grain boundary damage in the form of fine cracks resulting from the tensile hold is present for hold times of 60 min and longer, and substantially more internal cracks are quantifiable in 316 SS than in HT-UPS. The dislocation substructures observed in the deformed material differ significantly; an equiaxed cellular structure is observed in 316 SS, whereas in HT-UPS the microstructure takes the form of widespread and relatively homogenous tangles of dislocations pinned by the nanoscale MC precipitates. The significant effect of the fine distribution of precipitates on observed fatigue and creep-fatigue response is described in three distinct behavioral regions as it evolves with continued cycling.

  9. Algorithmic Problems in Power Management Sandy Irani

    E-Print Network [OSTI]

    Pruhs, Kirk

    usage poses two types of difficulties: . Energy Consumption: As energy is power integrated over time a laptop on a long flight is familiar with this problem. . Temperature: The energy used in computing, supplying the required energy may become prohibitively expensive, or even technologically infeasible

  10. Algorithmic Problems in Power Management Sandy Irani

    E-Print Network [OSTI]

    Pruhs, Kirk

    usage poses two types of difficulties: · Energy Consumption: As energy is power integrated over time a laptop on a long flight is familiar with this problem. · Temperature: The energy used in computing, supplying the required energy may become prohibitively expensive, or even technologically infeasible

  11. Sandy, Oregon: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to:RoscommonSBYSalton SeaBasinSandusky, Ohio: EnergySprings,

  12. OpenEI Community - Hurricane Sandy

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcernsCompany Oil and GasOff the GridHome All06/0 enFlowchart

  13. Women @ Energy: Giselle Sandi | Department of Energy

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment of EnergyThe U.S.Department ofWomenFrancesca DeMello

  14. Sandy, Utah: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |Rippey Jump to:WY)ProjectValley, Nevada: Energy

  15. Hurricane Sandy | OpenEI Community

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunan Runhua New Energy Development Co LtdHunanProgrammeHurricane

  16. Time-to-Event Analysis of Fine Particle Air Pollution and Preterm Birth: Results from North Carolina, 2001-2005

    E-Print Network [OSTI]

    Reich, Brian J.

    1 Time-to-Event Analysis of Fine Particle Air Pollution and Preterm Birth: Results from North.chang@duke.edu #12;3 Abstract Exposures to air pollution during pregnancy have been suggested as risk factors good air quality. Key words: air pollution, particulate matter, preterm birth, survival analysis Word

  17. NOx, FINE PARTICLE AND TOXIC METAL EMISSIONS FROM THE COMBUSTION OF SEWAGE SLUDGE/COAL MIXTURES: A SYSTEMATIC ASSESSMENT

    SciTech Connect (OSTI)

    Jost O.L. Wendt

    2001-05-04T23:59:59.000Z

    This research project focuses on pollutants from the combustion of mixtures of dried municipal sewage sludge (MSS) and coal. The objective is to determine the relationship between (1) fraction sludge in the sludge/coal mixture, and (2) combustion conditions on (a) NO{sub x} concentrations in the exhaust, (b) the size segregated fine and ultra-fine particle composition in the exhaust, and (c) the partitioning of toxic metals between vapor and condenses phases, within the process. To this end we shall use an existing 17kW downflow laboratory combustor, available with coal and sludge feed capabilities. The proposed study will be conducted in concert with an existing ongoing research on toxic metal partitioning mechanisms for very well characterized pulverized coals alone. Both high NO{sub x} and low NO{sub x} combustion conditions will be investigated (unstaged and staged combustion). The proposed work uses existing analytical and experimental facilities and draws on 20 years of research on NO{sub x} and fine particles that has been funded by DOE in this laboratory. Four barrels of dried sewage sludge are currently in the laboratory. Insofar as possible pertinent mechanisms will be elucidated. Tradeoffs between CO{sub 2} control, NO{sub x} control, and inorganic fine particle and toxic metal emissions will be determined.

  18. Fine-Grained Mobility in the Emerald System Eric :lul, Henry Levy, Norman Hutchinson, and Andrew Black*

    E-Print Network [OSTI]

    Black, Andrew P.

    Fine-Grained Mobility in the Emerald System Eric :lul, Henry Levy, Norman Hutchinson, and Andrew of Copenhagen, Universitetparken 1, DK- 2100 Copenhagen, Denmark. Norman Hutchinson, Depart- ment of Computer Science, University of Arizona, Tucson, AZ 85721. Andrew Black, Digital Equipment Corporation, 550 King

  19. Development of fine-resolution analyses and expanded large-scale forcing properties. Part I: Methodology and evaluation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Li, Zhijin; Vogelmann, Andrew M.; Feng, Sha; Liu, Yangang; Lin, Wuyin; Zhang, Minghua; Toto, Tami; Endo, Satoshi

    2015-01-27T23:59:59.000Z

    We produce fine-resolution, three-dimensional fields of meteorological and other variables for the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Southern Great Plains site. The Community Gridpoint Statistical Interpolation system is implemented in a multiscale data assimilation (MS-DA) framework that is used within the Weather Research and Forecasting model at a cloud-resolving resolution of 2 km. The MS-DA algorithm uses existing reanalysis products and constrains fine-scale atmospheric properties by assimilating high-resolution observations. A set of experiments show that the data assimilation analysis realistically reproduces the intensity, structure, and time evolution of clouds and precipitation associated with a mesoscale convective system.more »Evaluations also show that the large-scale forcing derived from the fine-resolution analysis has an overall accuracy comparable to the existing ARM operational product. For enhanced applications, the fine-resolution fields are used to characterize the contribution of subgrid variability to the large-scale forcing and to derive hydrometeor forcing, which are presented in companion papers.« less

  20. Fine Structure in the Energy Region of the Isoscalar Giant Quadrupole Resonance: Characteristic Scales from a Wavelet Analysis

    E-Print Network [OSTI]

    Ponomarev, Vladimir

    of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa 3 Physics Department, University of Cape Town, Rondebosch 7700, South Africa 4 iThemba LABS, PO Box 722, Somerset West 7129, South Africa 5 DepartmentFine Structure in the Energy Region of the Isoscalar Giant Quadrupole Resonance: Characteristic

  1. "Our Fine Arts," explained the poet Paul Valry in 1928, "were instituted at a time very different

    E-Print Network [OSTI]

    Canales, Jimena

    "Our Fine Arts," explained the poet Paul Valéry in 1928, "were instituted at a time very different images or auditory ones, born and disappearing at the faintest gesture, almost by a sign." The poet, but the home-delivery service of "Sensible Reality" dreamt of by the poet has still not reached us. Valéry

  2. Fine structure, hyperfine structure, and Stark effect in the NO A 2~+ state by optical radiofrequency double resonance

    E-Print Network [OSTI]

    Zare, Richard N.

    Fine structure, hyperfine structure, and Stark effect in the NO A 2~+ state by optical radio·frequency double resonance T. Bergeman Columbia Radiation Laboratory, Columbia University, New York, New York 10027 and Department of Physics*, Fordham University, Bronx, New York 10458 R. N. Zare Columbia Radiation Laboratory

  3. www.iaei.org July.August 2005 IAEI NEWS 83 GROUNDING PV AND SYSTEMS FINE STRANDED CONDUCTORS

    E-Print Network [OSTI]

    Johnson, Eric E.

    with single inverters sized below about 10 kW. Figure 1 shows the dc grounding for a PV system as spelled outwww.iaei.org July.August 2005 IAEI NEWS 83 GROUNDING PV AND SYSTEMS FINE STRANDED CONDUCTORS Grounding In the "Perspectives on PV" article in the September- October 2004 issue of the IAEI News

  4. Temperature dependence of magnetic behaviour in very fine grained, spark plasma sintered NiCuZn Ferrites

    E-Print Network [OSTI]

    Boyer, Edmond

    CuZn Ferrites Behzad Ahmadi,1, a) Karim Zehani,1 Martino LoBue,1 Vincent Loyau,1 and Frederic Mazaleyrat1 SATIE spark plasma sintering technique, a family of very fine grained, fully dense NiCuZn ferrites have been produced which show constant permeability up to several 10 MHz. These Ferrites can be used for filtering

  5. THE RUSKIN SCHOOL LIBRARY The Ruskin Library specializes in fine art, art history and theory, art techniques, and

    E-Print Network [OSTI]

    Oxford, University of

    , ARTbibliographies, the ARTstor Digital Library, The Bibliography of the History of Art, The Design and Applied ArtsTHE RUSKIN SCHOOL LIBRARY The Ruskin Library specializes in fine art, art history and theory, art materials, complementing the research collections of the Bodleian and Sackler Libraries. The Library

  6. Size distribution of fine Particles in Stack emissions of a 600-MWe coal-fired Power Plant

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Size distribution of fine Particles in Stack emissions of a 600-MWe coal-fired Power Plant I coal-fired power plant. Aknowledgements: French environment agency ADEME (Contract number 04-74-C0018 that was carried out in March 2006 at a 600-MWe coal-fired power plant. 51 ineris-00973267,version1-4Apr2014 Author

  7. FINE-GRAINED NANOCRYSTALLINE SILICON P-LAYER FOR HIGH OPEN CIRCUIT VOLTAGE A-SI:H SOLAR CELLS

    E-Print Network [OSTI]

    Deng, Xunming

    FINE-GRAINED NANOCRYSTALLINE SILICON P-LAYER FOR HIGH OPEN CIRCUIT VOLTAGE A-SI:H SOLAR CELLS of Michigan, Ann Arbor, MI 48109, USA ABSTRACT Hydrogenated amorphous silicon (a-Si:H) single- junction solar). It is found that the p-layer that leads to high Voc a-Si:H solar cells is a mixed-phase material that contains

  8. Development of fine-resolution analyses and expanded large-scale forcing properties. Part I: Methodology and evaluation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Li, Zhijin [California Inst. of Technology (CalTech), Pasadena, CA (United States); Univ. of California at Los Angeles, Los Angeles, CA (United States); Vogelmann, Andrew M. [Brookhaven National Lab. (BNL), Upton, NY (United States); Feng, Sha [Univ. of California at Los Angeles, Los Angeles, CA (United States); California Inst. of Technology (CalTech), Pasadena, CA (United States); Liu, Yangang [Brookhaven National Lab. (BNL), Upton, NY (United States); Lin, Wuyin [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhang, Minghua [Stony Brook Univ., NY (United States); Toto, Tami [Brookhaven National Lab. (BNL), Upton, NY (United States); Endo, Satoshi [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-27T23:59:59.000Z

    We produce fine-resolution, three-dimensional fields of meteorological and other variables for the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Southern Great Plains site. The Community Gridpoint Statistical Interpolation system is implemented in a multiscale data assimilation (MS-DA) framework that is used within the Weather Research and Forecasting model at a cloud-resolving resolution of 2 km. The MS-DA algorithm uses existing reanalysis products and constrains fine-scale atmospheric properties by assimilating high-resolution observations. A set of experiments show that the data assimilation analysis realistically reproduces the intensity, structure, and time evolution of clouds and precipitation associated with a mesoscale convective system. Evaluations also show that the large-scale forcing derived from the fine-resolution analysis has an overall accuracy comparable to the existing ARM operational product. For enhanced applications, the fine-resolution fields are used to characterize the contribution of subgrid variability to the large-scale forcing and to derive hydrometeor forcing, which are presented in companion papers.

  9. PLAN OF STUDY Digital Media & Design SCHOOL OF FINE ARTS 2013-2014Catalog BA in DMD

    E-Print Network [OSTI]

    Alpay, S. Pamir

    PLAN OF STUDY ­ Digital Media & Design SCHOOL OF FINE ARTS 2013-2014Catalog BA in DMD ATTACH YOUR ______ _____ __ ______ ______ _____ __ ______ ______ _____ __ ______ ______ _____ __ ______ ______ _____ __ ______ ______ _____ __ ______ ______ _____ __ ______ ______ _____ __ ______ University of Connecticut DMD BA REQUIREMENTS: 51 credits DMD courses (21 credits): DMD 1000 (3) ­ Digital Foundation DMD 1030 (3) ­ Animation Lab DMD 2010 (3) ­ Digital Culture DMD 3050 (3) ­ Visible Language DMD

  10. A Dynamic Job Grouping-Based Scheduling for Deploying Applications with Fine-Grained Tasks on Global Grids

    E-Print Network [OSTI]

    Buyya, Rajkumar

    A Dynamic Job Grouping-Based Scheduling for Deploying Applications with Fine-Grained Tasks for executing applications with compute-intensive jobs, there exist several applications with a large number of lightweight jobs. The overall processing undertaking of these applications involves high overhead time

  11. Fine scale daily movements and habitat use of East Pacific green turtles at a shallow coastal lagoon in Baja California Sur, Mexico

    E-Print Network [OSTI]

    Gerber, Leah R.

    movements and habitat use of East Pacific green turtles (Chelonia mydas) at Laguna San Ignacio, a shallowFine scale daily movements and habitat use of East Pacific green turtles at a shallow coastal Daily movements Fine scale Green turtle Habitat use Vagility Green turtles spend most of their lives

  12. AppAlAchiAn StAte UniverSity UndergrAdUAte BUlletin 2009-2010 The College of Fine and Applied Arts

    E-Print Network [OSTI]

    Rose, Annkatrin

    of the following eight departments: Art communication Family and consumer Sciences health, leisure and exerciseAppAlAchiAn StAte UniverSity UndergrAdUAte BUlletin 2009-2010 The College of Fine and Applied Arts The College of Fine and Applied Arts Glenda J. Treadaway, Dean Nina-Jo Moore, Associate Dean in cooperation

  13. POC-SCALE TESTING OF A DRY TRIBOELECTROSTATIC SEPARATOR FOR FINE COAL CLEANING

    SciTech Connect (OSTI)

    R.H. Yoon; G.H. Luttrell; E.S. Yan; A.D. Walters

    2001-04-30T23:59:59.000Z

    Numerous advanced coal cleaning processes have been developed in recent years that are capable of substantially reducing both ash- and sulfur-forming minerals from coal. However, most of the processes involve fine grinding and use water as the cleaning medium; therefore, the clean coal products must be dewatered before they can be transported and burned. Unfortunately, dewatering fine coal is costly, which makes it difficult to deploy advanced coal cleaning processes for commercial applications. As a means of avoiding problems associated with the fine coal dewatering, the National Energy Technology Laboratory (NETL) developed a dry coal cleaning process in which mineral matter is separated from coal without using water. In this process, pulverized coal is subjected to triboelectrification before being placed in an electric field for electrostatic separation. The triboelectrification is accomplished by passing a pulverized coal through an in-line mixer made of copper. Copper has a work function that lies between that of carbonaceous material (coal) and mineral matter. Thus, coal particles impinging on the copper wall lose electrons to the metal thereby acquiring positive charges, while mineral matter impinging on the wall gain electrons to acquire negative charges. The charged particles then pass through an electric field where they are separated according to their charges into two or more products depending on the configuration of the separator. The results obtained at NETL showed that it is capable of removing more than 90% of the pyritic sulfur and 70% of the ash-forming minerals from a number of eastern U.S. coals. However, the BTU recoveries were less than desirable. The laboratory-scale batch triboelectrostatic separator (TES) used by NETL relied on adhering charged particles on parallel electrode surfaces and scraping them off. Therefore, its throughput will be proportional to the electrode surface area. If this laboratory device is scaled-up as is, it would suffer from low throughput capacities and high maintenance requirements. In general, surface area-based separators (e.g., shaking tables, magnetic drum separator, electrodynamic separator, etc.) have lower throughput capacities than volume-based separators (e.g., flotation cell, dense-medium bath, cyclones, etc.) by an order of magnitude. Furthermore, the electrodes of the laboratory unit need to be cleaned frequently, creating a high maintenance requirement if it is scaled-up to a commercial unit. The bench-scale continuous TES unit developed at NETL, on the other hand, separates positively and negatively charged particles by splitting the gaseous stream containing these particles in an electric field by means of a flow splitter, so that the oppositely charged particles can be directed into different compartments. This device is fundamentally different from the laboratory unit in that the former is a surface area-based separator, while the latter is a volume-based separator. The bench-scale unit is referred to as an entrained flow separator by the in-house researchers at NETL. Thus, the entrained flow TES unit is a significant improvement over the laboratory unit with regard to throughput capacity. In the present work, the entrained flow separator concept will be utilized for developing a proof-of concept (POC) separator that can be scaled-up to commercial size units. To accomplish this, it is necessary to develop a bench-scale separator that can achieve high Btu recoveries while maintaining the high degree of separation efficiencies. It is the objective of the present investigation to develop an efficient separator by studying the mechanisms of triboelectrification and investigating better ways of separating the charged particles. An important criterion for developing efficient separators is that they not only provide high separation efficiencies but also have high throughput capacities, which are essential ingredients for successful commercialization.

  14. A LOW COST AND HIGH QUALITY SOLID FUEL FROM BIOMASS AND COAL FINES

    SciTech Connect (OSTI)

    John T. Kelly; George Miller; Mehdi Namazian

    2001-07-01T23:59:59.000Z

    Use of biomass wastes as fuels in existing boilers would reduce greenhouse gas emissions, SO2 and NOx emissions, while beneficially utilizing wastes. However, the use of biomass has been limited by its low energy content and density, high moisture content, inconsistent configuration and decay characteristics. If biomass is upgraded by conventional methods, the cost of the fuel becomes prohibitive. Altex has identified a process, called the Altex Fuel Pellet (AFP) process, that utilizes a mixture of biomass wastes, including municipal biosolids, and some coal fines, to produce a strong, high energy content, good burning and weather resistant fuel pellet, that is lower in cost than coal. This cost benefit is primarily derived from fees that are collected for accepting municipal biosolids. Besides low cost, the process is also flexible and can incorporate several biomass materials of interest The work reported on herein showed the technical and economic feasibility of the AFP process. Low-cost sawdust wood waste and light fractions of municipal wastes were selected as key biomass wastes to be combined with biosolids and coal fines to produce AFP pellets. The process combines steps of dewatering, pellet extrusion, drying and weatherizing. Prior to pilot-scale tests, bench-scale test equipment was used to produce limited quantities of pellets for characterization. These tests showed which pellet formulations had a high potential. Pilot-scale tests then showed that extremely robust pellets could be produced that have high energy content, good density and adequate weatherability. It was concluded that these pellets could be handled, stored and transported using equipment similar to that used for coal. Tests showed that AFP pellets have a high combustion rate when burned in a stoker type systems. While NOx emissions under stoker type firing conditions was high, a simple air staging approach reduced emissions to below that for coal. In pulverized-fuel-fired tests it was found that the ground pellets could be used as an effective NOx control agent for pulverized-coal-fired systems. NOx emissions reductions up to 63% were recorded, when using AFP as a NOx control agent. In addition to performance benefits, economic analyses showed the good economic benefits of AFP fuel. Using equipment manufacturer inputs, and reasonable values for biomass, biosolids and coal fines costs, it was determined that an AFP plant would have good profitability. For cases where biosolids contents were in the range of 50%, the after tax Internal Rates of Return were in the range of 40% to 50%. These are very attractive returns. Besides the baseline analysis for the various AFP formulations tested at pilot scale, sensitivity analysis showed the impact of important parameters on return. From results, it was clear that returns are excellent for a range of parameters that could be expected in practice. Importantly, these good returns are achieved even without incentives related to the emissions control benefits of biomass.

  15. Fine-scale Horizontal Structure of Arctic Mixed-Phase Clouds.

    SciTech Connect (OSTI)

    Rambukkange,M.; Verlinde, J.; Elorante, E.; Luke, E.; Kollias, P.; Shupe, M.

    2006-07-10T23:59:59.000Z

    Recent in situ observations in stratiform clouds suggest that mixed phase regimes, here defined as limited cloud volumes containing both liquid and solid water, are constrained to narrow layers (order 100 m) separating all-liquid and fully glaciated volumes (Hallett and Viddaurre, 2005). The Department of Energy Atmospheric Radiation Measurement Program's (DOE-ARM, Ackerman and Stokes, 2003) North Slope of Alaska (NSA) ARM Climate Research Facility (ACRF) recently started collecting routine measurement of radar Doppler velocity power spectra from the Millimeter Cloud Radar (MMCR). Shupe et al. (2004) showed that Doppler spectra has potential to separate the contributions to the total reflectivity of the liquid and solid water in the radar volume, and thus to investigate further Hallett and Viddaurre's findings. The Mixed-Phase Arctic Cloud Experiment (MPACE) was conducted along the NSA to investigate the properties of Arctic mixed phase clouds (Verlinde et al., 2006). We present surface based remote sensing data from MPACE to discuss the fine-scale structure of the mixed-phase clouds observed during this experiment.

  16. Bohr - Planck quantum theory, (Tesla) magnetic monopoles and fine structure constant

    E-Print Network [OSTI]

    Vladan Pankovic; Darko V. Kapor; Stevica Djurovic; Miodrag Krmar

    2014-10-17T23:59:59.000Z

    In this work we apply Bohr-Planck (Old quantum atomic and radiation) theory, i.e. and quasi-classical methods for analysis of the magnetic monopoles and other problems. We reproduce exactly some basic elements of the Dirac magnetic monopoles theory, especially Dirac electric/magnetic charge quantization condition. Also, we suggest a new, effective, simply called Tesla model (for analogy with positions of the solenoids by Tesla inductive motor) of the magnetic monopole instead of usual effective Dirac model (half-infinite, very tinny solenoid) of the magnetic monopole. In our, i.e. Tesla model we use three equivalent tiny solenoids connected in series with a voltage source. One end of any solenoid is placed at the circumference of a circle and solenoids are directed radial toward circle center. Length of any solenoid is a bit smaller than finite circle radius so that other end of any solenoid is very close to the circle center. Angles between neighboring solenoids equal $120^{\\circ}$. All this implies that, practically, there is no magnetic field, or, magnetic pole, e.g. $S$, in the circle center, and that whole system holds only other, $N$ magnetic pole, at the ends of the solenoids at circle circumference. Finally, we reproduce relatively satisfactory value of the fine structure constant using Planck, i.e. Bose-Einstein statistics and Wien displacement law.

  17. Impact of instrumental systematic errors on fine-structure constant measurements with quasar spectra

    E-Print Network [OSTI]

    J. B. Whitmore; M. T. Murphy

    2014-11-18T23:59:59.000Z

    We present a new `supercalibration' technique for measuring systematic distortions in the wavelength scales of high resolution spectrographs. By comparing spectra of `solar twin' stars or asteroids with a reference laboratory solar spectrum, distortions in the standard thorium--argon calibration can be tracked with $\\sim$10 m s$^{-1}$ precision over the entire optical wavelength range on scales of both echelle orders ($\\sim$50--100 \\AA) and entire spectrographs arms ($\\sim$1000--3000 \\AA). Using archival spectra from the past 20 years we have probed the supercalibration history of the VLT--UVES and Keck--HIRES spectrographs. We find that systematic errors in their wavelength scales are ubiquitous and substantial, with long-range distortions varying between typically $\\pm$200 m s$^{-1}$ per 1000 \\AA. We apply a simple model of these distortions to simulated spectra that characterize the large UVES and HIRES quasar samples which previously indicated possible evidence for cosmological variations in the fine-structure constant, $\\alpha$. The spurious deviations in $\\alpha$ produced by the model closely match important aspects of the VLT--UVES quasar results at all redshifts and partially explain the HIRES results, though not self-consistently at all redshifts. That is, the apparent ubiquity, size and general characteristics of the distortions are capable of significantly weakening the evidence for variations in $\\alpha$ from quasar absorption lines.

  18. Digging deeper: Fine root responses to rising atmospheric [CO2] in forested ecosystems

    SciTech Connect (OSTI)

    Iversen, Colleen M [ORNL

    2010-01-01T23:59:59.000Z

    Experimental evidence from a diverse set of forested ecosystems indicates that CO2 enrichment may lead to deeper rooting distributions. While the causes of greater root production at deeper soil depths under elevated CO2 concentration ([CO2]) require further investigation, altered rooting distributions are expected to affect important ecosystem processes. The depth at which fine roots are produced may influence root chemistry, physiological function, and mycorrhizal infection, leading to altered nitrogen (N) uptake rates and slower turnover. Also, soil processes such as microbial decomposition are slowed at depth in the soil, potentially affecting the rate at which root detritus becomes incorporated into soil organic matter. Deeper rooting distributions under elevated [CO2] provide exciting opportunities to use novel sensors and chemical analyses throughout the soil profile to track the effects of root proliferation on carbon (C) and N cycling. Models do not currently incorporate information on root turnover and C and N cycling at depth in the soil, and modification is necessary to accurately represent processes associated with altered rooting depth distributions. Progress in understanding and modeling the interface between deeper rooting distributions under elevated [CO2] and soil C and N cycling will be critical in projecting the sustainability of forest responses to rising atmospheric [CO2].

  19. On the variation of the fine-structure constant in Friedmann Universes

    E-Print Network [OSTI]

    William Q. Sumner

    2005-03-07T23:59:59.000Z

    The fine-structure constant alpha does not vary as Friedmann Universes evolve, a conclusion based on assessments of quantum mechanics and electrodynamics. alpha = e^2/(4pi epsilon hbar c), where e is the charge of the electron, epsilon is vacuum permittivity, c is the speed of light, and hbar is Planck's constant divided by 2pi. This inquiry was motivated by Schrodinger's (1939) prediction that all quantum wave functions coevolve with Friedmann geometry and a similar prediction by Sumner (1994) for vacuum permittivity. The functional form of variations in quantum wave functions found by Schrodinger is enough to show that alpha does not vary. Electrodynamics also predicts that alpha does not vary. Evolutionary changes in c exactly cancel those in vacuum permittivity and other factors in alpha do not change. Since alpha appears in all first-order perturbation formulas for atomic energy levels, comparisons of the atomic spectra of distant atoms with those in laboratories provide an experimental measure of this prediction. Most experiments find changes in alpha that are either statistically zero or very small. These results and estimates of the Hubble constant and deceleration parameter from precision redshift/magnitude data support a major assumption of this paper that the Friedmann solution to Einstein's theory of general relativity without cosmological constant is an adequate approximation to spacetime geometry and its long term evolution at quantum scales.

  20. The multiplicity of massive stars: A high angular resolution survey with the HST fine guidance sensor

    SciTech Connect (OSTI)

    Aldoretta, E. J.; Gies, D. R.; Henry, T. J.; Jao, W.-C.; Norris, R. P., E-mail: emily@astro.umontreal.ca, E-mail: gies@chara.gsu.edu, E-mail: thenry@chara.gsu.edu, E-mail: jao@chara.gsu.edu, E-mail: norris@chara.gsu.edu [Center for High Angular Resolution Astronomy, Department of Physics and Astronomy, Georgia State University, P. O. Box 5060, Atlanta, GA 30302-5060 (United States); and others

    2015-01-01T23:59:59.000Z

    We present the results of an all-sky survey made with the Fine Guidance Sensor on the Hubble Space Telescope to search for angularly resolved binary systems among massive stars. The sample of 224 stars is comprised mainly of Galactic O- and B-type stars and luminous blue variables, plus a few luminous stars in the Large Magellanic Cloud. The FGS TRANS mode observations are sensitive to the detection of companions with an angular separation between 0.?01 and 1.?0 and brighter than ?m=5. The FGS observations resolved 52 binary and 6 triple star systems and detected partially resolved binaries in 7 additional targets (43 of these are new detections). These numbers yield a companion detection frequency of 29% for the FGS survey. We also gathered literature results on the numbers of close spectroscopic binaries and wider astrometric binaries among the sample, and we present estimates of the frequency of multiple systems and the companion frequency for subsets of stars residing in clusters and associations, field stars, and runaway stars. These results confirm the high multiplicity fraction, especially among massive stars in clusters and associations. We show that the period distribution is approximately flat in increments of logP. We identify a number of systems of potential interest for long-term orbital determinations, and we note the importance of some of these companions for the interpretation of the radial velocities and light curves of close binaries that have third companions.

  1. DIRECT IMAGING OF FINE STRUCTURE IN THE CHROMOSPHERE OF A SUNSPOT UMBRA

    SciTech Connect (OSTI)

    Socas-Navarro, H. [Instituto de AstrofIsica de Canarias, Avda VIa Lactea S/N, La Laguna 38200, Tenerife (Spain); McIntosh, S. W.; Centeno, R.; De Wijn, A. G.; Lites, B. W. [High Altitude Observatory, NCAR , 3080 Center Green Drive, Boulder, CO 80301 (United States)], E-mail: hsocas@iac.es

    2009-05-10T23:59:59.000Z

    High-resolution imaging observations from the Hinode spacecraft in the Ca II H line are employed to study the dynamics of the chromosphere above a sunspot. We find that umbral flashes and other brightenings produced by the oscillation are extremely rich in fine structure, even beyond the resolving limit of our observations (0.''22). The umbra is tremendously dynamic to the point that our time cadence of 20 s does not suffice to resolve the fast lateral (probably apparent) motion of the emission source. Some bright elements in our data set move with horizontal propagation speeds of 30 km s{sup -1}. We have detected filamentary structures inside the umbra (some of which have a horizontal extension of {approx}1500 km) which, to our best knowledge, had not been reported before. The power spectra of the intensity fluctuations reveal a few distinct areas with different properties within the umbra that seem to correspond with the umbral cores that form it. Inside each one of these areas the dominant frequencies of the oscillation are coherent, but they vary considerably from one core to another.

  2. Direct Imaging of Fine Structure in the Chromosphere of a Sunspot Umbra

    E-Print Network [OSTI]

    H. Socas-Navarro; S. W. McIntosh; R. Centeno; A. G. de Wijn; B. W. Lites

    2008-11-19T23:59:59.000Z

    High-resolution imaging observations from the Hinode spacecraft in the CaII H line are employed to study the dynamics of the chromosphere above a sunspot. We find that umbral flashes and other brightenings produced by the oscillation are extremely rich in fine structure, even beyond the resolving limit of our observations (0.22"). The umbra is tremendously dynamic, to the point that our time cadence of 20 s does not suffice to resolve the fast lateral (probably apparent) motion of the emission source. Some bright elements in our dataset move with horizontal propagation speeds of 30 km/s. We have detected filamentary structures inside the umbra (some of which have a horizontal extension of ~1500 km) which, to our best knowledge, had not been reported before. The power spectra of the intensity fluctuations reveals a few distinct areas with different properties within the umbra that seem to correspond with the umbral cores that form it. Inside each one of these areas the dominant frequencies of the oscillation are coherent, but they vary considerably from one core to another.

  3. X-ray absorption fine structure spectroscopic study of uranium nitrides

    SciTech Connect (OSTI)

    Poineau, Frederic [University of Nevada, Las Vegas; Yeamans, Charles B. [University of California, Berkeley; Cerefice, Gary S. [University of Nevada, Las Vegas; Sattelberger, Alfred P [Argonne National Laboratory (ANL); Czerwinski, Ken R. [University of Nevada, Las Vegas

    2012-01-01T23:59:59.000Z

    Uranium mononitride (UN), sesquinitride (U2N3) and dinitride (UN2) were characterized by extended X-Ray absorption fine structure spectroscopy. Analysis on UN indicate the presence of three uranium shells at distances of 3.46(3), 4.89(5) and 6.01(6) A and a nitrogen shell at a distance of 2.46(2) A . For U2N3, two absorbing uranium atoms at different crystallographic positions are present in the structure. One of the uranium atoms is surrounded by nitrogen atoms at 2.28(2) A and by uranium atoms at 3.66(4) and 3.95(4) A . The second type of uranium atom is surrounded by nitrogen atoms at 2.33(2) and 2.64(3) A and by uranium atoms at 3.66(4), 3.95(4) and 5.31(5) A . Results on UN2 indicate two uranium shells at 3.71(4) and 5.32(5) A and two nitrogen shells at 2.28(2).

  4. FlexiWay: A Cache Energy Saving Technique Using Fine-grained Cache Reconfiguration

    SciTech Connect (OSTI)

    Mittal, Sparsh [ORNL] ORNL; Zhang, Zhao [Iowa State University] Iowa State University; Vetter, Jeffrey S [ORNL] ORNL

    2013-01-01T23:59:59.000Z

    Recent trends of CMOS scaling and use of large last level caches (LLCs) have led to significant increase in the leakage energy consumption of LLCs and hence, managing their energy consumption has become extremely important in modern processor design. The conventional cache energy saving techniques require offline profiling or provide only coarse granularity of cache allocation. We present FlexiWay, a cache energy saving technique which uses dynamic cache reconfiguration. FlexiWay logically divides the cache sets into multiple (e.g. 16) modules and dynamically turns off suitable and possibly different number of cache ways in each module. FlexiWay has very small implementation overhead and it provides fine-grain cache allocation even with caches of typical associativity, e.g. an 8-way cache. Microarchitectural simulations have been performed using an x86-64 simulator and workloads from SPEC2006 suite. Also, FlexiWay has been compared with two conventional energy saving techniques. The results show that FlexiWay provides largest energy saving and incurs only small loss in performance. For single, dual and quad core systems, the average energy saving using FlexiWay are 26.2%, 25.7% and 22.4%, respectively.

  5. Semiconductor quantum dots with light-hole exciton ground state: fabrication and fine structure

    E-Print Network [OSTI]

    Y. H. Huo; B. J. Witek; S. Kumar; R. Singh; E. Zallo; R. Grifone; D. Kriegner; R. Trotta; N. Akopian; J. Stangl; V. Zwiller; G. Bester; A. Rastelli; O. G. Schmidt

    2012-08-31T23:59:59.000Z

    Quantum dots (QDs) can act as convenient hosts of two-level quantum szstems, such as single electron spins, hole spins or excitons (bound electron-hole pairs). Due to quantum confinement, the ground state of a single hole confined in a QD usually has dominant heavy-hole (HH) character. For this reason light-hole (LH) states have been largely neglected, despite the fact that may enable the realilzation of coherent photon-to-spin converters or allow for faster spin manipulation compared to HH states. In this work, we use tensile strains larger than 0.3% to switch the ground state of excitons confined in high quality GaAs/AlGaAs QDs from the conventional HH- to LH-type. The LH-exciton fine structure is characterized by two in-plane-polarized lines and, ~400 micro-eV above them, by an additional line with pronounced out-of-plane oscillator strength, consistent with theoretical predictions based on atomistic empirical pseudopotential calculations and a simple mesoscopic model.

  6. Iron and zinc response and nutrient uptake of sorghums grown on two calcareous soils from the High Plains of Texas

    E-Print Network [OSTI]

    Pennington, Hurm Dale

    1971-01-01T23:59:59.000Z

    and Portales soils. Sorghums grown on the Drake sandy loam soil are more chlorotic than those grown on the Portales loam soil. The Drake soil has more CaCO and. "availaole" P but 3 less total Fe and EDTA extractable Fe than the Portales soil, The Drake... soil has a lower DTPA extractable Mn than the Portales soil, Less than l ppm was extracted from the Drake soil. The clay mineralogy of she Drake soil 1s about 60$ sepiolite which is one of the factors contributing to the lower total Fe content...

  7. Suppression of fine ash formation in pulverized coal flames. Final technical report, September 30, 1992--January 31, 1996

    SciTech Connect (OSTI)

    Kramlich, J.C.; Chenevert, B.; Park, Jungsung; Hoffman, D.A.; Butcher, E.K.

    1996-07-19T23:59:59.000Z

    Coal ash, and particularly fine fly ash, remain one of the principal practical and environmental problems in coal-based power generation. In particular, submicron aerosols are identified with direct inhalation risk. Submicron ash is thought to arise from mineral vaporization during char combustion, followed by nucleation, condensation and coagulation to yield an aerosol. While aerosols are predominantly made out of volatile alkali minerals, they also can include refractory oxides that are chemically reduced to more volatile forms within the char particle and vaporized. Most of the ash of size greater than 1 {mu}m is generated by agglomeration of mineral as the char particle bums out. These two principal mechanisms are thought to account for most of the ash generated in coal combustion. Previous research has shown that various forms of coal treatment can influence the yields of fine ash from combustion. The research reported here investigates various forms of treatment, including physical coal cleaning, aerodynamic sizing, degree of grinding, and combinations of these on both aerosol yields and on yields of fine residual ash (1-4 {mu}m). The work also includes results from the combustion of artificial chars that include individual mineral elements. This research shows that these various forms of coal treatment can significantly change ash characteristics. While none of the treatments affected the bulk of the residual ash size distribution significantly, the yield of the ash aerosol mode (d<0.5 {mu}m) and fine residual ash mode (1-4 {mu}m) are changed by the treatments.

  8. Variation in grain shape and surface textures of fine guartz sands in the South Texas Eolian Sand Sheet

    E-Print Network [OSTI]

    Sims, Donald Ralph

    1984-01-01T23:59:59.000Z

    action on sand grains. Samples were taken from 4 transects subnormal to the prevailing wind direction at approximately 20 mile intervals. Two quartz-grain shape types were recognized in the fine sand fraction: one consisted of predominately angular... and 45 miles southward from Baffin Bay to Port Mansfield (Figure 1). The major factors affecting the formation and accumulation of the South Texas Eolian Sand Sheet are a prevailing wind from the east-southeast, a semi-arid climate and a source...

  9. Comparison of the Anti-tumor Effects of Two Platinum Agents (Miriplatin and Fine-Powder Cisplatin)

    SciTech Connect (OSTI)

    Watanabe, Shobu, E-mail: swat@belle.shiga-med.ac.jp; Nitta, Norihisa, E-mail: r34nitta@belle.shiga-med.ac.jp; Ohta, Shinichi, E-mail: junryuhei@yahoo.co.jp; Sonoda, Akinaga, E-mail: akinaga@belle.shiga-med.ac.jp; Otani, Hideji, E-mail: otani@belle.shiga-med.ac.jp; Tomozawa, Yuki, E-mail: tomozawa@belle.shiga-med.ac.jp; Nitta-Seko, Ayumi, E-mail: sekoayumi@yahoo.co.jp; Tsuchiya, Keiko, E-mail: keikot@belle.shiga-med.ac.jp; Tanka, Toyohiko, E-mail: toyohiko@belle.shiga-med.ac.jp; Takahashi, Masashi, E-mail: masashi@belle.shiga-med.ac.jp; Murata, Kiyoshi, E-mail: murata@belle.shiga-med.ac.jp [Shiga University of Medical Science, Department of Radiology (Japan)

    2012-04-15T23:59:59.000Z

    Purpose: This study was designed to evaluate the anti-tumor effects of miriplatin-lipidol and fine-powder cisplatin-lipiodol suspensions. Methods: Assessment of the cytotoxicity of two drugs was performed: a soluble derivative of miriplatin (DPC) and fine-powder cisplatin. We randomly divided 15 rabbits with transplanted VX2 liver tumors into three equal groups. They were infused via the proper hepatic artery with a miriplatin-lipiodol suspension (ML), a fine-powder cisplatin-lipiodol suspension (CL), or saline (control) and the tumor growth rate was determined on MR images acquired before and 7 days after treatment. The concentration of platinum (PCs) in blood was assayed immediately, and 10, 30, and 60 min, and 24 h and 7 days after drug administration. Its concentration in tumor and surrounding normal liver tissues was determined at 7 days postadministration. Results: At high concentrations, fine-powder cisplatin exhibited stronger cytotoxicity than DPC. At low concentrations, both agents manifested weak cytotoxicity. While there was no difference between the tumor growth rate of the ML and the CL groups, the difference between the controls and ML- and CL-treated rabbits was significant. The blood PCs peaked at 10 min and then gradually decreased over time. On the other hand, no platinum was detected at any point after the administration of ML. There was no difference between the ML and CL groups in the PCs in tumor tissues; however, in normal hepatic tissue, the PCs were higher in ML- than CL-treated rabbits. Conclusions: We confirmed the anti-tumor effect of ML and CL. There was no significant difference between the anti-tumor effect of ML and CL at 7 days postadministration.

  10. Optically Detected Extended X-Ray Absorption Fine Structure Study of InGaN/GaN Single Quantum Wells

    SciTech Connect (OSTI)

    Rigopoulos, N.; Hamilton, B.; Davies, G. J.; Towlson, B. M. [School of Electrical and Electronic Engineering, University of Manchester, Manchester M60 1QD (United Kingdom); Poolton, N. R. J. [Synchrotron Radiation Department, Daresbury Laboratory, Daresbury, Warrington WA4 4AD (United Kingdom); Dawson, P.; Graham, D. M. [School of Physics and Astronomy, University of Manchester, Manchester M60 1QD (United Kingdom); Kappers, M. J.; Humphreys, C. J. [Dept. of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom); Carlson, S. [MAX-lab, Lund University, P.O. Box 118, SE- 221 00 Lund (Sweden)

    2007-04-10T23:59:59.000Z

    We have investigated the local atomic environment of the Ga atoms in an InxGa1-xN single quantum well structure using Optically Detected Extended X-ray Absorption Fine Structure (OD-EXAFS). A comparison of the OD-EXAFS data with a theoretical model shows the technique to be site selective for this particular structure and reveals that the quantum well emission originates from regions with x=0.15.

  11. INTENSITY MAPPING OF THE [C II] FINE STRUCTURE LINE DURING THE EPOCH OF REIONIZATION

    SciTech Connect (OSTI)

    Gong Yan; Cooray, Asantha [Department of Physics and Astronomy, University of California, Irvine, CA 92697 (United States); Silva, Marta; Santos, Mario G. [CENTRA, Instituto Superior Tecnico, Technical University of Lisbon, Lisboa 1049-001 (Portugal); Bock, James; Bradford, C. Matt; Zemcov, Michael [California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125 (United States)

    2012-01-20T23:59:59.000Z

    The atomic C II fine-structure line is one of the brightest lines in a typical star-forming galaxy spectrum with a luminosity {approx}0.1%-1% of the bolometric luminosity. It is potentially a reliable tracer of the dense gas distribution at high redshifts and could provide an additional probe to the era of reionization. By taking into account the spontaneous, stimulated, and collisional emission of the C II line, we calculate the spin temperature and the mean intensity as a function of the redshift. When averaged over a cosmologically large volume, we find that the C II emission from ionized carbon in individual galaxies is larger than the signal generated by carbon in the intergalactic medium. Assuming that the C II luminosity is proportional to the carbon mass in dark matter halos, we also compute the power spectrum of the C II line intensity at various redshifts. In order to avoid the contamination from CO rotational lines at low redshift when targeting a C II survey at high redshifts, we propose the cross-correlation of C II and 21 cm line emission from high redshifts. To explore the detectability of the C II signal from reionization, we also evaluate the expected errors on the C II power spectrum and C II-21 cm cross power spectrum based on the design of the future millimeter surveys. We note that the C II-21 cm cross power spectrum contains interesting features that capture physics during reionization, including the ionized bubble sizes and the mean ionization fraction, which are challenging to measure from 21 cm data alone. We propose an instrumental concept for the reionization C II experiment targeting the frequency range of {approx}200-300 GHz with 1, 3, and 10 m apertures and a bolometric spectrometer array with 64 independent spectral pixels with about 20,000 bolometers.

  12. AN INTRIGUING CHROMOSPHERIC JET OBSERVED BY HINODE: FINE STRUCTURE KINEMATICS AND EVIDENCE OF UNWINDING TWISTS

    SciTech Connect (OSTI)

    Liu Wei; Berger, Thomas E.; Title, Alan M.; Tarbell, Theodore D. [Lockheed Martin Solar and Astrophysics Laboratory, Department ADBS, Building 252, 3251 Hanover Street, Palo Alto, CA 94304 (United States)

    2009-12-10T23:59:59.000Z

    We report a chromospheric jet lasting for more than 1 hr observed by the Hinode Solar Optical Telescope in unprecedented detail. The ejection occurred in three episodes separated by 12-14 minutes, with the amount and velocity of material decreasing with time. The upward velocities range from 438 to 33 km s{sup -1}, while the downward velocities of the material falling back have smaller values (mean: -56km s{sup -1}) and a narrower distribution (standard deviation: 14km s{sup -1}). The average acceleration inferred from parabolic spacetime tracks is 141 m s{sup -2}, a fraction of the solar gravitational acceleration. The jet consists of fine threads (0.''5-2'' wide), which exhibit coherent, oscillatory transverse motions perpendicular to the jet axis and about a common equilibrium position. These motions propagate upward along the jet, with the maximum phase speed of 744+-11 km s{sup -1}at the leading front of the jet. The transverse oscillation velocities range from 151 to 26 km s{sup -1}, amplitudes from 6.0 to 1.9 Mm, and periods from 250 to 536 s. The oscillations slow down with time and cease when the material starts to fall back. The falling material travels along almost straight lines in the original direction of ascent, showing no transverse motions. These observations are consistent with the scenario that the jet involves untwisting helical threads, which rotate about the axis of a single large cylinder and shed magnetic helicity into the upper atmosphere.

  13. Ab initio curved-wave x-ray-absorption fine structure

    SciTech Connect (OSTI)

    Mustre de Leon, J.; Rehr, J.J.; Zabinsky, S.I. (Department of Physics, FM-15, University of Washington, Seattle, Washington (USA)); Albers, R.C. (Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico (USA))

    1991-09-01T23:59:59.000Z

    The most important elements of {ital ab} {ital initio} calculations of x-ray-absorption fine structure (XAFS) are studied. To obtain accurate results without {ital ad} {ital hoc} adjustable parameters, we find it essential to include (i) curved-wave effects, (ii) a complex, energy-dependent self-energy, (iii) an approximate molecular potential, and (iv) a fixed energy reference for the photoelectron wave number. Based on these findings, an automated code has been developed for {ital ab} {ital initio} calculations of single-scattering XAFS, in which curved-wave effects are treated exactly in terms of effective backscattering amplitudes, inelastic losses and self-energy shifts are incorporated with use of a Hedin-Lundqvist self-energy, an automated relativistic overlapping-atom muffin-tin potential is used, and the energy threshold is estimated from electron-gas theory. The efficiency of the code is made possible by analytic expressions for the Hedin-Lundqvist self-energy. This code replaces existing tables of XAFS phases and scattering amplitudes and yields reliable theoretical XAFS standards for arbitrary pairs of atoms throughout the Periodic Table ({ital Z}{le}94). These results are comparable to those from self-consistent calculations and are valid to within about 20 eV of the absorption edge. Comparisons with experiment are presented for Cu, Ge, Pt, Br{sub 2}, and GeCl{sub 4}. The calculated XAFS amplitudes are found to be accurate to within 15%; XAFS phases are accurate to within 0.2 rad; and nearest-neighbor distances are typically accurate to within 0.02 A.

  14. NOx, FINE PARTICLE AND TOXIC METAL EMISSIONS FROM THE COMBUSTION OF SEWAGE SLUDGE/COAL MIXTURES: A SYSTEMATIC ASSESSMENT

    SciTech Connect (OSTI)

    Jost O.L. Wendt

    2003-01-31T23:59:59.000Z

    This research project focuses on pollutants from the combustion of mixtures of dried municipal sewage sludge (MSS) and coal. The objective is to determine the relationship between (1) fraction sludge in the sludge/coal mixture, and (2) combustion conditions on (a) NOx concentrations in the exhaust, (b) the size segregated fine and ultra-fine particle composition in the exhaust, and (c) the partitioning of toxic metals between vapor and condenses phases, within the process. The proposed study will be conducted in concert with an existing ongoing research on toxic metal partitioning mechanisms for very well characterized pulverized coals alone. Both high NOx and low NOx combustion conditions will be investigated (unstaged and staged combustion). Tradeoffs between CO{sub 2} control, NO{sub x} control, and inorganic fine particle and toxic metal emissions will be determined. Previous research results have demonstrated that the inhalation of coal/MSS ash particles cause an increase in lung permeability than coal ash particles alone. Elemental analysis of the coal/MSS ash particles showed that Zn was more abundant in these ash particles than the ash particles of coal ash alone.

  15. Characterization of Fine Particulate Matter (PM) and Secondary PM Precursor Gases in the Mexico City Metropolitan Area

    SciTech Connect (OSTI)

    Luisa T. Molina, Rainer Volkamer, Benjamin de Foy, Wenfang Lei, Miguel Zavala, Erik Velasco; Mario J. Molina

    2008-10-31T23:59:59.000Z

    This project was one of three collaborating grants funded by DOE/ASP to characterize the fine particulate matter (PM) and secondary PM precursors in the Mexico City Metropolitan Area (MCMA) during the MILAGRO Campaign. The overall effort of MCMA-2006, one of the four components, focused on i) examination of the primary emissions of fine particles and precursor gases leading to photochemical production of atmospheric oxidants and secondary aerosol particles; ii) measurement and analysis of secondary oxidants and secondary fine PM production, with particular emphasis on secondary organic aerosol (SOA), and iii) evaluation of the photochemical and meteorological processes characteristic of the Mexico City Basin. The collaborative teams pursued the goals through three main tasks: i) analyses of fine PM and secondary PM precursor gaseous species data taken during the MCMA-2002/2003 campaigns and preparation of publications; ii) planning of the MILAGRO Campaign and deployment of the instrument around the MCMA; and iii) analysis of MCMA-2006 data and publication preparation. The measurement phase of the MILAGRO Campaign was successfully completed in March 2006 with excellent participation from the international scientific community and outstanding cooperation from the Mexican government agencies and institutions. The project reported here was led by the Massachusetts Institute of Technology/Molina Center for Energy and the Environment (MIT/MCE2) team and coordinated with DOE/ASP-funded collaborators at Aerodyne Research Inc., University of Colorado at Boulder and Montana State University. Currently 24 papers documenting the findings from this project have been published. The results from the project have improved significantly our understanding of the meteorological and photochemical processes contributing to the formation of ozone, secondary aerosols and other pollutants. Key findings from the MCMA-2003 include a vastly improved speciated emissions inventory from on-road vehicles: the MCMA motor vehicles produce abundant amounts of primary PM, elemental carbon, particle-bound polycyclic aromatic hydrocarbons, carbon monoxide and a wide range of air toxics; the feasibility of using eddy covariance techniques to measure fluxes of volatile organic compounds in an urban core and a valuable tool for validating local emissions inventory; a much better understanding of the sources and atmospheric loadings of volatile organic compounds; the first spectroscopic detection of glyoxal in the atmosphere; a unique analysis of the high fraction of ambient formaldehyde from primary emission sources; characterization of ozone formation and its sensitivity to VOCs and NOx; a much more extensive knowledge of the composition, size distribution and atmospheric mass loadings of both primary and secondary fine PM, including the fact that the rate of MCMA SOA production greatly exceeded that predicted by current atmospheric models; evaluations of significant errors that can arise from standard air quality monitors for O3 and NO2; and the implementation of an innovative Markov Chain Monte Carlo method for inorganic aerosol modeling as a powerful tool to analyze aerosol data and predict gas phase concentrations where these are unavailable. During the MILAGRO Campaign the collaborative team utilized a combination of central fixed sites and a mobile laboratory deployed throughout the MCMA to representative urban and boundary sites to measure trace gases and fine particles. Analysis of the extensive 2006 data sets has confirmed the key findings from MCMA-2002/2003; additionally MCMA-2006 provided more detailed gas and aerosol chemistry and wider regional scale coverage. Key results include an updated 2006 emissions inventory; extension of the flux system to measure fluxes of fine particles; better understanding of the sources and apportionment of aerosols, including contribution from biomass burning and industrial sources; a comprehensive evaluation of metal containing particles in a complex urban environment; identification of a close correlation between

  16. Investigation and modeling of processing-microstructure-property relations in ultra-fine grained hexagonal close packed materials under strain path changes 

    E-Print Network [OSTI]

    Yapici, Guney Guven

    2009-05-15T23:59:59.000Z

    Ultra-fine grained (UFG) materials have attracted considerable interest due to the possibility of achieving simultaneous increase in strength and ductility. Effective use of these materials in engineering applications requires investigating...

  17. Laboratory evaluation of the constant rate of strain and constant head techniques for measurement of the hydraulic conductivity of fine grained soils

    E-Print Network [OSTI]

    Adams, Amy Lynn

    2011-01-01T23:59:59.000Z

    This thesis evaluates the constant rate of strain and constant head techniques for measurement of the hydraulic conductivity of fine grained soils. A laboratory program compares hydraulic conductivity measurements made ...

  18. Source Signatures of Fine Particulate Matter from Petroleum Refining and Fuel Use

    SciTech Connect (OSTI)

    Gerald P. Huffman; Frank E. Huggins; Naresh Shah; Robert Huggins

    1999-12-31T23:59:59.000Z

    Combustion experiments were carried out on four different residual fuel oils in a 732 kW boiler. Particulate matter (PM) emission samples were separated aerodynamically by a cyclone into fractions that were nominally less than and greater than 2.5 microns in diameter. However, examination of several of the samples by computer-controlled scanning electron microscopy (CCSEM) revealed that part of the <2.5 micron fraction (PM{sub 2.5}) in fact consists of carbonaceous cenospheres and vesicular particles that range up to 10 microns in diameter. X-ray absorption fine structure (XAFS) spectroscopy data were obtained at the S, V, Ni, Fe, Cu, Zn, and As Kedges, and at the Pb L-edge. Deconvolution of the x-ray absorption near edge structure (XANES) region of the S spectra established that the dominant molecular forms of S present were sulfate (26-84% of total S) and thiophene (13-39% of total S). Sulfate was greater in the PM{sub 2.5} samples than in the >2.5 micron samples (PM{sub 2.5+}). Inorganic sulfides and elemental sulfur were present in lower percentages. The Ni XANES spectra from all of the samples agree fairly well with that of NiSO4, while most of the V spectra closely resemble that of vanadyl sulfate (VO{center_dot}SO{sub 4}{center_dot}xH{sub 2}O). The other metals investigated (Fe, Cu, Zn, and Pb) were also present predominantly as sulfates. Arsenic is present as an arsenate (As{sup +5}). X-ray diffraction patterns of the PM{sub 2.5} fraction exhibit sharp lines due to sulfate compounds (Zn, V, Ni, Ca, etc.) superimposed on broad peaks due to amorphous carbons. All of the samples contain a significant organic component, with the LOI ranging from 64 to 87 % for the PM{sub 2.5} fraction and from 88 to 97% for the PM{sub 2.5+} fraction. {sup 13}C nuclear magnetic resonance (NMR) analysis indicates that the carbon is predominantly condensed in graphitic structures. Aliphatic structure was detected in only one of seven samples examined.

  19. SOURCE SIGNATURES OF FINE PARTICULATE MATTER FROM PETROLEUM REFINING AND FUEL USE

    SciTech Connect (OSTI)

    Gerald P. Huffman; Frank E. Huggins; Naresh Shah; Artur Braun; Yuanzhi Chen; J. David Robertson; Joseph Kyger; Adel F. Sarofim; Ronald J. Pugmire; Henk L.C. Meuzelaar; JoAnn Lighty

    2003-07-31T23:59:59.000Z

    The molecular structure and microstructure of a suite of fine particulate matter (PM) samples produced by the combustion of residual fuel oil and diesel fuel were investigated by an array of analytical techniques. Some of the more important results are summarized below. Diesel PM (DPM): A small diesel engine test facility was used to generate a suite of diesel PM samples from different fuels under engine load and idle conditions. C XANES, {sup 13}C NMR, XRD, and TGA were in accord that the samples produced under engine load conditions contained more graphitic material than those produced under idle conditions, which contained a larger amount of unburned diesel fuel and lubricating oil. The difference was enhanced by the addition of 5% of oxygenated compounds to the reference fuel. Scanning transmission x-ray micro-spectroscopy (STXM) was able to distinguish particulate regions rich in C=C bonds from regions rich in C-H bonds with a resolution of {approx}50 nm. The former are representative of more graphitic regions and the latter of regions rich in unburned fuel and oil. The dominant microstructure observed by SEM and TEM consisted of complex chain-like structures of PM globules {approx}20-100 nm in mean diameter, with a high fractal dimension. High resolution TEM revealed that the graphitic part of the diesel soot consisted of onion-like structures made up of graphene layers. Typically 3-10 graphene layers make up the ''onion rings'', with the layer spacing decreasing as the number of layers increases. ROFA PM: Residual oil fly ash (ROFA) PM has been analyzed by a new approach that combines XAFS spectroscopy with selective leaching procedures. ROFA PM{sub 2.5} and PM{sub 2.5+} produced in combustion facilities at the U.S. EPA National Risk Management Research Laboratory (NRML) were analyzed by XAFS before and after leaching with water, acid (1N HCl), and pentane. Both water and acid leaching removed most of the metal sulfates, which were the dominant phase present for most metals (V, Ni, Zn, etc.). This allowed conclusive identification in the leaching residue of important secondary sulfide and oxide phases, including Ni sulfide, a toxic and carcinogenic phase observed in the leached PM{sub 2.5+} samples. Other significant secondary phases identified included V{sub 2}O{sub 4}, V sulfide, and NiFe{sub 2}O{sub 4}.

  20. Improvement of storage, handling and transportability of fine coal. Quarterly technical progress report No. 3, July 1, 1994--September 30, 1994

    SciTech Connect (OSTI)

    NONE

    1996-08-16T23:59:59.000Z

    The Mulled Coal process was developed as a means of overcoming the adverse handling characteristics of wet fine coal without thermal drying. The process involves the addition of a low cost, harmless reagent to wet fine coal using off-the-shelf mixing equipment. The objectives of this project are to demonstrate that: The Mulled Coal process, which has been proven to work on a wide range of wet fine coals at bench scale, will work equally well on a continuous basis, producing consistent quality at a convincing rate of production in a commercial coal preparation plant. The wet product from a fine coal cleaning circuit can be converted to a solid fuel form for ease of handling and cost savings in storage and rail car transportation. A wet fine coal product thus converted to a solid fuel form, can be stored, shipped, and burned with conventional fuel handling, transportation, and combustion systems. During this third quarter of the contract period, activities were underway under Tasks 2 and 3. Sufficient characterization of the feedstock coal options at the Chetopa Plant was conducted and mulling characteristics determined to enable a decision to be made regarding the feedstock selection. It was decided that the froth concentrate will be the feedstock wet fine coal used for the project. On that basis, activities in the areas of design and procurement were initiated.

  1. NOx, FINE PARTICLE AND TOXIC METAL EMISSIONS FROM THE COMBUSTION OF SEWAGE SLUDGE/COAL MIXTURES: A SYSTEMATIC ASSESSMENT

    SciTech Connect (OSTI)

    Jost O.L. Wendt

    2002-08-15T23:59:59.000Z

    This research project focuses on pollutants from the combustion of mixtures of dried municipal sewage sludge (MSS) and coal. The objective is to determine the relationship between (1) fraction sludge in the sludge/coal mixture, and (2) combustion conditions on (a) NOx concentrations in the exhaust, (b) the size segregated fine and ultra-fine particle composition in the exhaust, and (c) the partitioning of toxic metals between vapor and condenses phases, within the process. The proposed study will be conducted in concert with an existing ongoing research on toxic metal partitioning mechanisms for very well characterized pulverized coals alone. Both high NOx and low NOx combustion conditions will be investigated (unstaged and staged combustion). Tradeoffs between CO2 control, NOx control, and inorganic fine particle and toxic metal emissions will be determined. Previous research has yielded data on trace metal partitioning for MSS by itself, with natural gas assist, for coal plus MSS combustion together, and for coal alone. We have re-evaluated the inhalation health effects of ash aerosol from combustion of MSS both by itself and also together with coal. We have concluded that ash from the co-combustion of MSS and coal is very much worse from an inhalation health point of view, than ash from either MSS by itself or coal by itself. The reason is that ZnO is not the ''bad actor'' as had been suspected before, but the culprit is, rather, sulfated Zn. The MSS supplies the Zn and the coal supplies the sulfur, and so it is the combination of coal and MSS that makes that process environmentally bad. If MSS is to be burned, it should be burned without coal, in the absence of sulfur.

  2. Effects of fine particulate matter and its constituents on low birth weight among full-term infants in California

    SciTech Connect (OSTI)

    Basu, Rupa, E-mail: Rupa.Basu@oehha.ca.gov [California Office of Environmental Health Hazard Assessment, Air Pollution Epidemiology Section, Oakland, CA (United States)] [California Office of Environmental Health Hazard Assessment, Air Pollution Epidemiology Section, Oakland, CA (United States); Harris, Maria [School of Public Health, Boston University, Boston, MA (United States)] [School of Public Health, Boston University, Boston, MA (United States); Sie, Lillian [School of Public Health, University of California, Berkeley, CA (United States)] [School of Public Health, University of California, Berkeley, CA (United States); Malig, Brian; Broadwin, Rachel; Green, Rochelle [California Office of Environmental Health Hazard Assessment, Air Pollution Epidemiology Section, Oakland, CA (United States)] [California Office of Environmental Health Hazard Assessment, Air Pollution Epidemiology Section, Oakland, CA (United States)

    2014-01-15T23:59:59.000Z

    Relationships between prenatal exposure to fine particles (PM{sub 2.5}) and birth weight have been observed previously. Few studies have investigated specific constituents of PM{sub 2.5}, which may identify sources and major contributors of risk. We examined the effects of trimester and full gestational prenatal exposures to PM{sub 2.5} mass and 23 PM{sub 2.5} constituents on birth weight among 646,296 term births in California between 2000 and 2006. We used linear and logistic regression models to assess associations between exposures and birth weight and risk of low birth weight (LBW; <2500 g), respectively. Models were adjusted for individual demographic characteristics, apparent temperature, month and year of birth, region, and socioeconomic indicators. Higher full gestational exposures to PM{sub 2.5} mass and several PM{sub 2.5} constituents were significantly associated with reductions in term birth weight. The largest reductions in birth weight were associated with exposure to vanadium, sulfur, sulfate, iron, elemental carbon, titanium, manganese, bromine, ammonium, zinc, and copper. Several of these PM{sub 2.5} constituents were associated with increased risk of term LBW. Reductions in birth weight were generally larger among younger mothers and varied by race/ethnicity. Exposure to specific constituents of PM{sub 2.5}, especially traffic-related particles, sulfur constituents, and metals, were associated with decreased birth weight in California. -- Highlights: • Examine full gestational and trimester fine particle and its constituents on term birth weight. • Fine particles and several of its constituents associated with birth weight reductions. • Largest reductions for traffic-related particles, sulfur constituents, and metals. • Greater birth weight reductions for younger mothers, and varied by race/ethnicity.

  3. Innovative process for concentration of fine particle coal slurries. Final technical report, September 1, 1995--August 31, 1996

    SciTech Connect (OSTI)

    Rajchel, M.; Ehrlinger, H.P.; Harnett, D.; Fonseca, A.; Maurer, R.

    1997-05-01T23:59:59.000Z

    Williams Technologies, Inc. And Clarke Rajchel Engineering are developing a technology (patent pending) to produce high quality coal water slurries from preparation plant fine coal streams. The WTI/CRE technology uses the novel implementation of high-shear cross-flow separation which replaces and enhances conventional thickening processes by surpassing normally achievable solids loadings. Dilute ultra-fine (minus 100 mesh) solids slurries can be concentrated to greater than 60 weight percent and remixed, as required, with de-watered coarser fractions to produce pumpable, heavily loaded coal slurries. The permeate (filtrate) resulting from this process has been demonstrated to be crystal clear and totally free of suspended solids. The primary objective of this project was to demonstrate the WTI/CRE coal slurry production process technology at the pilot scale. The technology can enable Illinois coal producers and users to realize significant cost and environmental benefits both by eliminating fine coal waste disposal problems and producing an IGCC fuel to produce power which meets all foreseeable clean air standards. Testing was also directed at concentrating mine tailings material to produce a tailings paste which can be mine-back- filled, eliminating the need for tailings ponds. During the grant period, a laboratory-scale test apparatus (up to 3 GPM feed rate) was assembled and operated to demonstrate process performance over a range of feed temperatures and pressures. A dilute coal/water slurry from Consol, Inc.`s Rend Lake Preparation Plant was concentrated with the process to a maximum recorded solids loading of 61.9% solids by weight. Analytical results from the concentrate were evaluated by Destec Energy for suitability as an IGCC fuel.

  4. Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles

    DOE Patents [OSTI]

    Yoon, Roe-Hoan (Blacksburg, VA); Adel, Gregory T. (Blacksburg, VA); Luttrell, Gerald H. (Blacksburg, VA)

    1991-01-01T23:59:59.000Z

    A method and apparatus are disclosed for the microbubble flotation separation of very fine particles, especially coal, so as to produce a high purity and large recovery efficiently. This is accomplished through the use of a high aspect ratio flotation column, microbubbles, and a countercurrent use of wash water to gently wash the froth. Also, disclosed are unique processes and apparatus for generating microbubbles for flotation in a high efficient and inexpensive manner using either a porous tube or an in-line static generator.

  5. A facile method for nickel catalyst immobilization on ultra fine Al{sub 2}O{sub 3} powders

    SciTech Connect (OSTI)

    Zhang, T. [School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001 (China)] [School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001 (China); Wen, G., E-mail: wgw@hitwh.edu.cn [School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001 (China); Huang, X.X.; Zhong, B.; Zhang, X.D.; Bai, H.W.; Yu, H.M. [School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001 (China)] [School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001 (China)

    2010-07-15T23:59:59.000Z

    A pure nickel coating has been successfully plated on the surface of ultra fine Al{sub 2}O{sub 3} particles via a facile electroless plating method. Coating morphology and crystallite size can be tailored by pH values. Dense coating with the maximum crystallite size of 24 nm was obtained at pH 11.0 and porous coating with the minimum crystallite size of 15 nm was obtained at pH value 12.5. The plated powders have been demonstrated to be an effective catalyst for growing boron nitride nanotubes.

  6. Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles

    DOE Patents [OSTI]

    Yoon, R.H.; Adel, G.T.; Luttrell, G.H.

    1991-01-01T23:59:59.000Z

    A method and apparatus are disclosed for the microbubble flotation separation of very fine particles, especially coal, so as to produce a high purity and large recovery efficiently. This is accomplished through the use of a high aspect ratio flotation column, microbubbles, and a countercurrent use of wash water to gently wash the froth. Also, disclosed are unique processes and apparatus for generating microbubbles for flotation in a high efficient and inexpensive manner using either a porous tube or an in-line static generator. 23 figures.

  7. Diffraction anomalous fine structure analysis on (Bi,Pb){sub 2}PtO{sub 4} powders

    SciTech Connect (OSTI)

    Vacinova, J. [Centre National de la Recherche Scientifique (CNRS), 38 - Grenoble (France). Lab. de Cristallographie; Hodeau, J.L.; Bordet, P. [European Synchrotron Radiation Facility, 38 - Grenoble (France)] [and others

    1995-12-31T23:59:59.000Z

    The Diffraction Anomalous Fine Structure (DAFS) method can provide site selective and chemical selective structural information. The possibilities of DAFS experimental and data analysis procedures are demonstrated for (Bi{sub 1.67},Pb{sub 0.33}) powder samples. Experiments have been performed at both L{sub III} and K Pt edges (11.56.564keV and 78keV), using several data collection set-ups (analyser crystals, 1D-detector, 2D-detector). Based on this example, a comparison between these experimental procedures and analysis is given and discussed.

  8. Experimental and Computational Studies of High Energy Density Plasma Streams Ablated from Fine Wires

    SciTech Connect (OSTI)

    Greenly, John B. [Cornell University; Seyler, Charles [Cornell University

    2014-03-30T23:59:59.000Z

    Experimental and computational studies of high energy density plasma streams ablated from fine wires. Laboratory of Plasma Studies, School of Electrical and Computer Engineering, Cornell University. Principal Investigators: Dr. John B. Greenly and Dr. Charles E. Seyler. This report summarizes progress during the final year of this project to study the physics of high energy density (HED) plasma streams of 10^17-10^20/cm3 density and high velocity (~100-500 km/s). Such streams are produced from 5-250 micrometer diameter wires heated and ionized by a 1 MA, 250 ns current pulse on the COBRA pulsed power facility at Cornell University. Plasma is ablated from the wires and is driven away to high velocity by unbalanced JxB force. A wire, or an array of wires, can persist as an essentially stationary, continuous source of this streaming plasma for >200 ns, even with driving magnetic fields of many Tesla and peak current densities in the plasma of many MA/cm2. At the heart of the ablation stream generation is the continuous transport of mass from the relatively cold, near-solid-density wire "core" into current-carrying plasma within 1 mm of the wire, followed by the magnetic acceleration of that plasma and its trapped flux to form a directed stream. In the first two years of this program, an advancing understanding of ablation physics led to the discovery of several novel wire ablation experimental regimes. In the final year, one of these new HED plasma regimes has been studied in quantitative detail. This regime studies highly reproducible magnetic reconnection in strongly radiating plasma with supersonic and superalfvenic flow, and shock structures in the outflow. The key discovery is that very heavy wires, e.g. 250 micrometer diameter Al or 150 micrometer Cu, behave in a qualitatively different way than the lighter wires typically used in wire-array Z-pinches. Such wires can be configured to produce a static magnetic X-point null geometry that stores magnetic and thermal energy; reconnection and outflow are triggered when the current begins to decrease and the electric field reverses. The reconnecting flow is driven by both magnetic and thermal pressure forces, and it has been found to be possible to vary the configuration so that one or the other dominates. The magnetic null extends into a current sheet that is heated and radiates strongly, with supersonic outflows. This is the first study of reconnection in this HED plasma regime. This compressible, radiative regime, and the triggering mechanism, may be relevant to solar and astrophysical processes. The PERSEUS extended MHD code has been developed for simulation of these phenomena, and will continue to be used and further developed to help interpret and understand experimental results, as well as to guide experimental design. The code is well-suited to simulations of shocks, and includes Hall and electron inertia physics that appear to be of importance in a number of ablation flow regimes, and definitely in the reconnection regime when gradient scales are comparable to the ion inertial scale. During the final year, our graduate student supported by this grant completed a new version of PERSEUS with the finite volume computational scheme replaced by a discontinuous Galerkin method that gives much less diffusive behavior and allows faster run time and higher spatial resolution. Thecode is now being used to study shock structures produced in the outflow region of the reconnection regime.

  9. Nitrogen availability and indirect measurements of greenhouse gas emissions from aerobic and anaerobic biowaste digestates applied to agricultural soils

    SciTech Connect (OSTI)

    Rigby, H.; Smith, S.R., E-mail: s.r.smith@imperial.ac.uk

    2013-12-15T23:59:59.000Z

    Highlights: • Nitrogen release in digestate-amended soil depends on the digestate type. • Overall N release is modulated by digestate mineral and mineralisable N contents. • Microbial immobilisation does not influence overall release of digestate N in soil. • Digestate physical properties and soil type interact to affect overall N recovery. • High labile C inputs in digestate may promote denitrification in fine-textured soil. - Abstract: Recycling biowaste digestates on agricultural land diverts biodegradable waste from landfill disposal and represents a sustainable source of nutrients and organic matter (OM) to improve soil for crop production. However, the dynamics of nitrogen (N) release from these organic N sources must be determined to optimise their fertiliser value and management. This laboratory incubation experiment examined the effects of digestate type (aerobic and anaerobic), waste type (industrial, agricultural and municipal solid waste or sewage sludge) and soil type (sandy loam, sandy silt loam and silty clay) on N availability in digestate-amended soils and also quantified the extent and significance of the immobilisation of N within the soil microbial biomass, as a possible regulatory mechanism of N release. The digestate types examined included: dewatered, anaerobically digested biosolids (DMAD); dewatered, anaerobic mesophilic digestate from the organic fraction of municipal solid waste (DMADMSW); liquid, anaerobic co-digestate of food and animal slurry (LcoMAD) and liquid, thermophilic aerobic digestate of food waste (LTAD). Ammonium chloride (NH{sub 4}Cl) was included as a reference treatment for mineral N. After 48 days, the final, maximum net recoveries of mineral N relative to the total N (TN) addition in the different digestates and unamended control treatments were in the decreasing order: LcoMAD, 68%; LTAD, 37%, DMAD, 20%; and DMADMSW, 11%. A transient increase in microbial biomass N (MBN) was observed with LTAD application, indicating greater microbial activity in amended soil and reflecting the lower stability of this OM source, compared to the other, anaerobic digestate types, which showed no consistent effects on MBN compared to the control. Thus, the overall net release of digestate N in different soil types was not regulated by N transfer into the soil microbial biomass, but was determined primarily by digestate properties and the capacity of the soil type to process and turnover digestate N. In contrast to the sandy soil types, where nitrate (NO{sub 3}{sup -}) concentrations increased during incubation, there was an absence of NO{sub 3}{sup -} accumulation in the silty clay soil amended with LTAD and DMADMSW. This provided indirect evidence for denitrification activity and the gaseous loss of N, and the associated increased risk of greenhouse gas emissions under certain conditions of labile C supply and/or digestate physical structure in fine-textured soil types. The significance and influence of the interaction between soil type and digestate stability and physical properties on denitrification processes in digestate-amended soils require urgent investigation to ensure management practices are appropriate to minimise greenhouse gas emissions from land applied biowastes.

  10. A Scenario for the Fine Structures of Solar Type IIIb Radio Bursts Based on the Electron Cyclotron Maser Emission

    E-Print Network [OSTI]

    Wang, C B

    2015-01-01T23:59:59.000Z

    A scenario based on the electron cyclotron maser emission is proposed for the fine structures of solar radio emission in the present discussion. It is suggested that under certain conditions modulation of the ratio between the plasma frequency and electron gyro-frequency by ultra low frequency waves, which is a key parameter for excitation of the electron cyclotron maser instability, may lead to the intermittent emission of radio waves. As an example, the explanation of the observed fine-structure components in the solar type IIIb burst is discussed in detail. Three primary issues of the type IIIb bursts are addressed: 1) what is the physical mechanism that results in the intermittent emission elements that form a chain in the dynamic spectrum of type IIIb bursts, 2) what causes the split pair (or double stria) and the triple stria, 3) why in the events of fundamental-harmonic pair emission there is only IIIb-III, but IIIb-IIIb or III-IIIb cases are very rarely observed.

  11. The lesson of causal discovery algorithms for quantum correlations: Causal explanations of Bell-inequality violations require fine-tuning

    E-Print Network [OSTI]

    Christopher J. Wood; Robert W. Spekkens

    2014-12-05T23:59:59.000Z

    An active area of research in the fields of machine learning and statistics is the development of causal discovery algorithms, the purpose of which is to infer the causal relations that hold among a set of variables from the correlations that these exhibit. We apply some of these algorithms to the correlations that arise for entangled quantum systems. We show that they cannot distinguish correlations that satisfy Bell inequalities from correlations that violate Bell inequalities, and consequently that they cannot do justice to the challenges of explaining certain quantum correlations causally. Nonetheless, by adapting the conceptual tools of causal inference, we can show that any attempt to provide a causal explanation of nonsignalling correlations that violate a Bell inequality must contradict a core principle of these algorithms, namely, that an observed statistical independence between variables should not be explained by fine-tuning of the causal parameters. In particular, we demonstrate the need for such fine-tuning for most of the causal mechanisms that have been proposed to underlie Bell correlations, including superluminal causal influences, superdeterminism (that is, a denial of freedom of choice of settings), and retrocausal influences which do not introduce causal cycles.

  12. Measurement and capture of fine and ultrafine particles from a pilot-scale pulverized coal combustor with an electrostatic precipitator

    SciTech Connect (OSTI)

    Ying Li; Achariya Suriyawong; Michael Daukoru; Ye Zhuang; Pratim Biswas [Washington University, St. Louis, MO (United States). Aerosol and Air Quality Research Laboratory

    2009-05-15T23:59:59.000Z

    Experiments were carried out in a pilot-scale pulverized coal combustor at the Energy and Environmental Research Center (EERC) burning a Powder River Basin (PRB) subbituminous coal. A scanning mobility particle sizer (SMPS) and an electrical low-pressure impactor (ELPI) were used to measure the particle size distributions (PSDs) in the range of 17 nm to 10 m at the inlet and outlet of the electrostatic precipitator (ESP). At the ESP inlet, a high number concentration of ultrafine particles was found, with the peak at approximately 75 nm. A trimodal PSD for mass concentration was observed with the modes at approximately 80-100 nm, 1-2 {mu}m, and 10 {mu}m. The penetration of ultrafine particles through the ESP increased dramatically as particle size decreased below 70 nm, attributable to insufficient or partial charging of the ultrafine particles. Injection of nanostructured fine-particle sorbents for capture of toxic metals in the flue gas caused high penetration of the ultrafine particles through the ESP. The conventional ESP was modified to enhance charging using soft X-ray irradiation. A slipstream of flue gas was introduced from the pilot-scale facility and passed through this modified ESP. Enhancement of particle capture was observed with the soft X-ray irradiation when moderate voltages were used in the ESP, indicating more efficient charging of fine particles. 32 refs., 5 figs., 1 tab.

  13. Control of fine particulate emissions from coal-fired utility boilers: Spin filter collection device (rotary cyclone)

    SciTech Connect (OSTI)

    He, Bo X.

    1990-01-01T23:59:59.000Z

    A bench-scale test program has been performed to evaluate the concept of placing a porous cylindrical surface (such as a metal screen) at the core of a container and spinning the surface with an external motor for fine particulate/gas separation. The rotating surface enhances the centrifugal effects in the annular region and provides a smooth transition between the flow in the annular and core regions and acts like an enhanced cyclone. It is therefore called a rotary cyclone.'' The porous surface is self-cleaning and offers good steady-state pressure drop characteristics. Objectives of this project are: (1) to carry out theoretical and experimental investigations using the rotary cyclone concept to capture particulates in the 0.5 to 10 micron size range; and (2) to evaluate its economic feasibility based on an engineering scale-up and comparison with conventional fabric filter and electrostatic precipitator systems. It was demonstrated that the efficiency in separating fine particulates is governed by two major characteristics, i.e., the magnitude of the centrifugal force and the approach velocity or the gas-to-surface area ratio. Results from the bench-scale tests have shown a collection efficiency of well over 99% for a typical fly ash. A preliminary conceptual design for a 40 MW installation was developed based on the experimental work. 4 refs., 4 figs., 8 tabs.

  14. Species richness in a successional grassland: effects of nitrogen enrichment and plant litter

    E-Print Network [OSTI]

    Foster, Bryan L.; Gross, Katherine L.

    1998-12-01T23:59:59.000Z

    , Bromus inermis. The most common forb species in the community were Daucus carota, Achillea mil- lefolium, Hypericum perforatum, and Potentilla recta. Soils underlying the field site are a well-drained, Osh- temo sandy loam formed from glacial till... designed to explain the interdepen- dence of species diversity and productivity invoke the mechanism of competition for light occurring among living plants in causing species extinctions and reduc- tions in diversity at high levels of productivity (Gold...

  15. Improvement of storage, handling, and transportability of fine coal. Quarterly technical progress report No. 5, January 1, 1995--March 31, 1995

    SciTech Connect (OSTI)

    NONE

    1996-08-21T23:59:59.000Z

    The Mulled Coal process was developed as a means of overcoming the adverse handling characteristics of wet fine coal without thermal drying. The process involves the addition of a low cost, harmless reagent to wet fine coal using off-the-shelf mixing equipment. Based on laboratory- and bench-scale testing, Mulled Coal can be stored, shipped, and burned without causing any of the plugging, pasting, carryback and freezing problems normally associated with wet coal. The objectives of this project are to demonstrate that: the Mulled Coal process, which has been proven to work on a wide range of wet fine coals at bench scale, will work equally well on a continuous basis, producing consistent quality at a convincing rate of production in a commercial coal preparation plant; the wet product from a fine coal cleaning circuit can be converted to a solid fuel form for ease of handling and cost savings in storage and rail car transportation; and a wet fine coal product thus converted to a solid fuel form, can be stored, shipped, and burned with conventional fuel handling, transportation, and combustion systems. During this reporting period, virtually all of the technical activities and progress was made in the areas of circuit installation and startup operations. Work in these activity areas are described.

  16. Levitation and collection of diamond fine particles in the rf plasma chamber equipped with a hot filament

    SciTech Connect (OSTI)

    Shimizu, S.; Shimizu, T.; Thomas, H. M.; Morfill, G. E. [Max-Planck-Institut fuer extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching (Germany); Jacob, W. [Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, Boltzmannstrasse 2, D-85748 Garching (Germany)

    2011-11-15T23:59:59.000Z

    We demonstrate the levitation of diamond fine particles in a H{sub 2} rf plasma chamber equipped with a hot filament and heated electrodes. The levitation conditions should be carefully chosen to compensate the strong thermophoretic forces caused by the filament and the electrodes. This levitation technique with the existence of a hot filament can be applied, e.g., for the efficient growth of diamond layers on seed particles injected and levitated in an rf plasma with reactive gases, e.g., CH{sub 4}/H{sub 2}. Additionally, the method for direct capture of levitated particles on a planar substrate was established, which is useful if it is necessary to analyze the particles after the levitation.

  17. Precision Test of Many-Body QED in the Be$^+$ $2p$ Fine Structure Doublet Using Short-Lived Isotopes

    E-Print Network [OSTI]

    Nörtershäuser, Wilfried; Krieger, Andreas; Pachucki, Krzysztof; Puchalski, Mariusz; Blaum, Klaus; Bissell, Mark L; Frömmgen, Nadja; Hammen, Michael; Kowalska, Magdalena; Krämer, Jörg; Kreim, Kim; Neugart, Rainer; Neyens, Gerda; Sánchez, Rodolfo; Yordanov, Deyan T

    2015-01-01T23:59:59.000Z

    Absolute transition frequencies of the $2s\\; ^2{\\rm S}_{1/2} \\rightarrow 2p\\;^2\\mathrm{P}_{1/2,3/2}$ transitions in Be$^+$ were measured for the isotopes $^{7,9-12}$Be. The fine structure splitting of the $2p$ state and its isotope dependence are extracted and compared to results of \\textit{ab initio} calculations using explicitly correlated basis functions, including relativistic and quantum electrodynamics effects at the order of $m \\alpha^6$ and $m \\alpha^7 \\ln \\alpha$. Accuracy has been improved in both the theory and experiment by 2 orders of magnitude, and good agreement is observed. This represents one of the most accurate tests of quantum electrodynamics for many-electron systems, being insensitive to nuclear uncertainties.

  18. Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly report, April 1--June 30, 1997

    SciTech Connect (OSTI)

    Moro, N.; Shields, G.L.; Smit, F.J.; Jha, M.C.

    1997-12-31T23:59:59.000Z

    The primary goal of this project is the engineering development of two advanced physical fine coal cleaning processes, column flotation and selective agglomeration, for premium fuel applications. The project scope includes laboratory research and bench-scale testing on six coals to optimize these processes, followed by the design, construction, and operation of a 2 t/hr process development unit (PDU). Accomplishments during the quarter are described on the following tasks and subtasks: Development of near-term applications (engineering development and dewatering studies); Engineering development of selective agglomeration (bench-scale testing and process scale-up); PDU and advanced column flotation module (coal selection and procurement and advanced flotation topical report); Selective agglomeration module (module operation and clean coal production with Hiawatha, Taggart, and Indiana 7 coals); Disposition of the PDU; and Project final report. Plans for next quarter are discussed and agglomeration results of the three tested coals are presented.

  19. Design and producing of fine-group cross section library HENDL3.0/FG for subcritical system

    SciTech Connect (OSTI)

    Zou, J.; Zeng, Q.; Xu, D.; Hu, L.; Long, P. [Inst. of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei, Anhui, 230031 (China); School of Nuclear Science and Technology, Univ. of Science and Technology of China, No.350 Shushanhu Road, Shushan District, Hefei, Anhui, 230031 (China)

    2012-07-01T23:59:59.000Z

    To improve the accuracy of the neutron analyses for subcritical system with thermal fission blanket, a coupled neutron and photon (315 n + 42{gamma}) fine-group cross section library HENDL3.0/FG based on ENDF/B-VII, JEFF3.1 and JENDL3.3 was produced by FDS team. In order to test the availability and reliability of the HENDL3.0/FG data library, shielding and critical safety benchmarks were performed with VisualBUS code. The testing results indicated that the discrepancy between calculation and experimental values of nuclear parameters fell in a reasonable range. It showed that the nuclear data library had accuracy and availability. (authors)

  20. Integrating flotation to improve the performance of an HMC circuit treating a low-rank fine coal

    SciTech Connect (OSTI)

    Celik, H.; Polat, M. [Celar Bayar University, Manisa (Turkey)

    2005-11-01T23:59:59.000Z

    One reason that heavy media cyclone (HMC) circuits suffer from the inadvertent loss of magnetite and fine coal is the presence of nonmagnetic material in the magnetic separator feed. In this study, flotation was applied to the undersize fractions of the HMC drain-and-rinse screens to minimize these problems. These fractions, which contain 17.9% nonmagnetic material, are currently sent to magnetic separators and the nonmagnetic portion from the separators contains 39.1% ash. Applying flotation resulted in a clean coal product with an ash content of 8.7% and a calorific value of 6,300 kcal/kg. The refuse from flotation, which will be sent to the magnetic separators, contains 7.7% nonmagnetics.

  1. Suppression of fine-structure splitting and oscillator strength of sodium D-line in a Debye plasma

    SciTech Connect (OSTI)

    Basu, Joyee, E-mail: joyeebasu@yahoo.com; Ray, Debasis, E-mail: ray.debasis@gmail.com [Department of Physics, Bengal Engineering and Science University, Shibpur, Howrah, West Bengal 711 103 (India)] [Department of Physics, Bengal Engineering and Science University, Shibpur, Howrah, West Bengal 711 103 (India)

    2014-01-15T23:59:59.000Z

    We investigate theoretically the influence of static plasma screening on relativistic spin-orbit interaction-induced fine-structure splitting of the D-line doublet arising from the transitions 3p{sub 1/2}–3s{sub 1/2} and 3p{sub 3/2}–3s{sub 1/2} of the valence electron of a sodium atom embedded in a model plasma environment. The many-electron atomic problem is formulated first as an effective one-electron problem in which the interaction between the optically active valence electron and the atomic ion core is represented by an accurate parametric model potential including core-polarization correction, and then the plasma effect on the atomic system is simulated by the Debye-screening model for the valence-core interaction. It is observed that the magnitude of spin-orbit energy shift reduces for both the upper component 3p{sub 3/2} and the lower component 3p{sub 1/2} with increasing plasma screening strength, thereby reducing the spin-orbit energy separation between these two components as the screening becomes stronger. As a consequence, the magnitude of fine-structure splitting between the D{sub 1} and D{sub 2} line energies of sodium drops significantly with stronger plasma screening. The optical (absorption) oscillator strength for 3s ? 3p transition is seen to reduce with stronger screening and this leads to a screening-induced gradual suppression of the 3p ? 3s spontaneous decay rate.

  2. Fine-structure calculations of energy levels, oscillator strengths, and transition probabilities for sulfur-like iron, Fe XI

    SciTech Connect (OSTI)

    Abou El-Maaref, A., E-mail: aahmh@hotmail.com [Physics Department, Faculty of Science, Al-Azhar University, Assuit (Egypt); Ahmad, Mahmoud [Physics Department, Faculty of Science, Al-Azhar University, Assuit (Egypt); Allam, S.H. [Laboratory of Lasers and New Materials, Physics Department, Faculty of Science, Cairo University, Giza (Egypt)

    2014-05-15T23:59:59.000Z

    Energy levels, oscillator strengths, and transition probabilities for transitions among the 14 LS states belonging to configurations of sulfur-like iron, Fe XI, have been calculated. These states are represented by configuration interaction wavefunctions and have configurations 3s{sup 2}3p{sup 4}, 3s3p{sup 5}, 3s{sup 2}3p{sup 3}3d, 3s{sup 2}3p{sup 3}4s, 3s{sup 2}3p{sup 3}4p, and 3s{sup 2}3p{sup 3}4d, which give rise to 123 fine-structure energy levels. Extensive configuration interaction calculations using the CIV3 code have been performed. To assess the importance of relativistic effects, the intermediate coupling scheme by means of the Breit–Pauli Hamiltonian terms, such as the one-body mass correction and Darwin term, and spin–orbit, spin–other-orbit, and spin–spin corrections, are incorporated within the code. These incorporations adjusted the energy levels, therefore the calculated values are close to the available experimental data. Comparisons between the present calculated energy levels as well as oscillator strengths and both experimental and theoretical data have been performed. Our results show good agreement with earlier works, and they might be useful in thermonuclear fusion research and astrophysical applications. -- Highlights: •Accurate atomic data of iron ions are needed for identification of solar corona. •Extensive configuration interaction wavefunctions including 123 fine-structure levels have been calculated. •The relativistic effects by means of the Breit–Pauli Hamiltonian terms are incorporated. •This incorporation adjusts the energy levels, therefore the calculated values are close to experimental values.

  3. X-ray absorption fine structure spectroscopic determination of plutonium speciation at the Rocky Flats environmental technology

    SciTech Connect (OSTI)

    Lezama-pacheco, Juan S [Los Alamos National Laboratory; Conradson, Steven D [Los Alamos National Laboratory; Clark, David L [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    X-ray Absorption Fine Structure spectroscopy was used to probe the speciation of the ppm level Pu in thirteen soil and concrete samples from the Rocky Flats Environmental Technology Site in support of the site remediation effort that has been successfully completed since these measurements. In addition to X-ray Absorption Near Edge Spectra, two of the samples yielded Extended X-ray Absorption Fine Structure spectra that could be analyzed by curve-fits. Most of these spectra exhibited features consistent with PU(IV), and more specificaJly, PuO{sub 2+x}-type speciation. Two were ambiguous, possibly indicating that Pu that was originally present in a different form was transforming into PuO{sub 2+x}, and one was interpreted as demonstrating the presence of an unusual Pu(VI) compound, consistent with its source being spills from a PUREX purification line onto a concrete floor and the resultant extreme conditions. These experimental results therefore validated models that predicted that insoluble PuO{sub 2+x} would be the most stable form of Pu in equilibrium with air and water even when the source terms were most likely Pu metal with organic compounds or a Pu fire. A corollary of these models' predictions and other in situ observations is therefore that the minimal transport of Pu that occurred on the site was via the resuspension and mobilization of colloidal particles. Under these conditions, the small amounts of diffusely distributed Pu that were left on the site after its remediation pose only a negligible hazard.

  4. Fine coal flotation of plant waste: An in-plant comparison - columns vs. sub-A cell

    SciTech Connect (OSTI)

    Ehrlinger, H.P. III; Lytle, J.M.; Kohlenberger, L.; Rapp, D.M. (Illinois State Geological Survey, Champaign, IL (United States)); Stephenson, J.; Zipperian, D. (Deister Machine Co., Inc., Fort Wayne, IN (United States)); Sterner, R.M.; Norris, D. (Kerr-McGee Corp., Oklahoma City, OK (United States))

    1991-01-01T23:59:59.000Z

    The objective of this project is to compare the flotation effectiveness of the column flotation and the sub-aeration technology to clean very fine ({minus}100 mesh) coal in the waste streams of coal washing plants. Good concentrate grades along with a high recovery of energy content have been achieved while rejecting a large percentage of the ash forming minerals and pyrite. However, comparative data of columns vs. sub-aeration cells is not available from a single plant. This project was developed to install a small commercial size Deister Column beside the existing sub-aeration flotation cells at Kerr-McGee's Galatia Plant so that a comparison of the flotation results can be made. A representative split of the fines which normally goes to sub-aeration cells can be diverted without reagent, to the column for continuous side by side flotation testing over an extended period. The Deister Column was installed during the quarter along with the sampling system and tailings volume measuring apparatus. Parts of several weeks were spent in assuring that realistic goals could be obtained. During the de-bugging period it was found that water pressure and air pressure within the plant was not constant due to cleanup hoses which were on the same fresh water line to assure constant water and air pressure to the column during testing periods. Most of the shakedown testing was completed in April and May. Preliminary tests have been run in which high grade concentrates have been made but with low Btu recoveries. Additional tests with increased reagent rates are planned to increase Btu recoveries and will be reported at the Contractors Conference and in the final report. 24 figs., 1 tab.

  5. A day at the museum: An augmented fine-art exhibit Anne Bationo Tillon*, Eric Marchand, Jean Laneurit, Fabien Servant, Isabelle Marchal, Pascal Houlier

    E-Print Network [OSTI]

    Boyer, Edmond

    A day at the museum: An augmented fine-art exhibit Anne Bationo Tillon*, Eric Marchand, Jean Rennes 1 ABSTRACT This paper examines how an augmented reality guide can enrich museum visits. The results we obtained form an experiment conducted for a museum exhibit. An ergonomic experimentation has

  6. Appears in the Proceedings of the 47th Int'l Symp. on Microarchitecture (MICRO-47), December 2014 Enabling Realistic Fine-Grain Voltage Scaling with

    E-Print Network [OSTI]

    Batten, Christopher

    -level modeling to explore a new dynamic voltage/frequency scaling controller called the fine-grain synchronization controller (FG-SYNC+). FG-SYNC+ enables improved performance and energy efficiency at similar average power for multithreaded applications with activity im- balance. We then use circuit-level modeling

  7. A New Direction in Dye-Sensitized Solar Cells Redox Mediator Development: In Situ Fine-Tuning of the Cobalt(II)/(III) Redox

    E-Print Network [OSTI]

    A New Direction in Dye-Sensitized Solar Cells Redox Mediator Development: In Situ Fine 3168, Australia *S Supporting Information ABSTRACT: Dye-sensitized solar cells (DSCs) are an attractive to tackle present and future energy challenges. Dye-sensitized solar cells (DSCs) are considered

  8. The Bachelor of Fine Arts (B.F.A.) New Media degree program combines creativity and technical expertise--art, drama, and music with digital and interactive media--to provide you with the skills,

    E-Print Network [OSTI]

    Seldin, Jonathan P.

    expertise--art, drama, and music with digital and interactive media--to provide you with the skillsThe Bachelor of Fine Arts (B.F.A.) New Media degree program combines creativity and technical, knowledge, and experience to succeed in the field of new media. The program's unique combination of fine

  9. High resolution sequence stratigraphic and reservoir characterization studies of D-07, D-08 and E-01 sands, Block 2 Meren field, offshore Niger Delta

    E-Print Network [OSTI]

    Esan, Adegbenga Oluwafemi

    2004-09-30T23:59:59.000Z

    - to fine-grained poorly-sorted sandstone (delta front facies); (5) muddy silt-to fine- grained wavy-bedded sandstone (lower shoreface facies); (6) very-fine- to fine-grained iv sandy mudstone (lower shoreface facies); and (7) massive, silty shales.... The progradational parasequence set consists of upward-coarsening delta front to upper shoreface facies, whereas the upward- fining retrogradational parasequence sets are composed of middle to lower shoreface deposits overlain by offshore marine shales...

  10. Near-edge X-ray absorption fine-structure spectroscopy of naphthalene diimide-thiophene co-polymers

    SciTech Connect (OSTI)

    Gann, Eliot; McNeill, Christopher R., E-mail: christopher.mcneill@monash.edu [Department of Materials Engineering, Monash University, Wellington Road, Clayton, Victoria 3800 (Australia); Szumilo, Monika; Sirringhaus, Henning [Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE (United Kingdom)] [Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE (United Kingdom); Sommer, Michael [Institute of Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, 79104 Freiburg (Germany)] [Institute of Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, 79104 Freiburg (Germany); Maniam, Subashani; Langford, Steven J. [School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800 (Australia)] [School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800 (Australia); Thomsen, Lars [Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168 (Australia)] [Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168 (Australia)

    2014-04-28T23:59:59.000Z

    Near-edge X-ray absorption fine-structure (NEXAFS) spectroscopy is an important tool for probing the structure of conjugated polymer films used in organic electronic devices. High-performance conjugated polymers are often donor-acceptor co-polymers which feature a repeat unit with multiple functional groups. To facilitate better application of NEXAFS spectroscopy to the study of such materials, improved understanding of the observed NEXAFS spectral features is required. In order to examine how the NEXAFS spectrum of a donor-acceptor co-polymer relates to the properties of the sub-units, a series of naphthalene diimide-thiophene-based co-polymers have been studied where the nature and length of the donor co-monomer has been systematically varied. The spectra of these materials are compared with that of a thiophene homopolymer and naphthalene diimide monomer enabling peak assignment and the influence of inter-unit electronic coupling to be assessed. We find that while it is possible to attribute peaks within the ?* manifold as arising primarily due to the naphthalene diimide or thiophene sub-units, very similar dichroism of these peaks is observed indicating that it may not be possible to separately probe the molecular orientation of the separate sub-units with carbon K-edge NEXAFS spectroscopy.

  11. FINE PARTICAL AND TOXIC METAL EMISSIONS FROM THE COMBUSTION OF SEWAGE SLUDGE/COAL MIXTURES: A SYSTEMATIC ASSESSMENT

    SciTech Connect (OSTI)

    Jost O.L. Wendt; Wayne S. Seames; Art Fernandez

    2003-09-21T23:59:59.000Z

    This research project focuses on pollutants from the combustion of mixtures of dried municipal sewage sludge (MSS) and pulverized coal. The objective was to determine potential tradeoffs between CO{sub 2} mitigation through using a CO{sub 2} neutral fuel, such as municipal sewage sludge, and the emergence of other potential problems such as the emission of toxic fly ash particles. The work led to new insight into mechanisms governing the partitioning of major and trace metals from the combustion of sewage sludge, and mixtures of coal and sewage sludge. The research also showed that the co-combustion of coal and sewage sludge emitted fine particulate matter that might potentially cause greater lung injury than that from the combustion of either coal alone or municipal sewage sludge alone. The reason appeared to be that the toxicity measured required the presence of large amounts of both zinc and sulfur in particles that were inhaled. MSS provided the zinc while coal provided the sulfur. Additional research showed that the toxic effects could most likely be engineered out of the process, through the introduction of kaolinite sorbent downstream of the combustion zone, or removing the sulfur from the fuel. These results are consequences of applying ''Health Effects Engineering'' to this issue. Health Effects Engineering is a new discipline arising out of this work, and is derived from using a collaboration of combustion engineers and toxicologists to mitigate the potentially bad health effects from combustion of this biomass fuel.

  12. Effect of wettability on scale-up of multiphase flow from core-scale to reservoir fine-grid-scale

    SciTech Connect (OSTI)

    Chang, Y.C.; Mani, V.; Mohanty, K.K. [Univ. of Houston, TX (United States)

    1997-08-01T23:59:59.000Z

    Typical field simulation grid-blocks are internally heterogeneous. The objective of this work is to study how the wettability of the rock affects its scale-up of multiphase flow properties from core-scale to fine-grid reservoir simulation scale ({approximately} 10{prime} x 10{prime} x 5{prime}). Reservoir models need another level of upscaling to coarse-grid simulation scale, which is not addressed here. Heterogeneity is modeled here as a correlated random field parameterized in terms of its variance and two-point variogram. Variogram models of both finite (spherical) and infinite (fractal) correlation length are included as special cases. Local core-scale porosity, permeability, capillary pressure function, relative permeability functions, and initial water saturation are assumed to be correlated. Water injection is simulated and effective flow properties and flow equations are calculated. For strongly water-wet media, capillarity has a stabilizing/homogenizing effect on multiphase flow. For small variance in permeability, and for small correlation length, effective relative permeability can be described by capillary equilibrium models. At higher variance and moderate correlation length, the average flow can be described by a dynamic relative permeability. As the oil wettability increases, the capillary stabilizing effect decreases and the deviation from this average flow increases. For fractal fields with large variance in permeability, effective relative permeability is not adequate in describing the flow.

  13. Quick extended x-ray absorption fine structure instrument with millisecond time scale, optimized for in situ applications

    SciTech Connect (OSTI)

    Khalid, S.; Caliebe, W.; Siddons, P.; So, I.; Clay, b.; Hanson, J.; Wang, Q.; Frenkel, A.; Marinkovicl, N.; Hould, N.; ginder-Vogel, M.; Landrot, G.L.; Sparks, D.L.; Ganjoo, A.

    2010-01-19T23:59:59.000Z

    In order to learn about in situ structural changes in materials at subseconds time scale, we have further refined the techniques of quick extended x-ray absorption fine structure (QEXAFS) and quick x-ray absorption near edge structure (XANES) spectroscopies at beamline X18B at the National Synchrotron Light Source. The channel cut Si (111) monochromator oscillation is driven through a tangential arm at 5 Hz, using a cam, dc motor, pulley, and belt system. The rubber belt between the motor and the cam damps the mechanical noise. EXAFS scan taken in 100 ms is comparable to standard data. The angle and the angular range of the monochromator can be changed to collect a full EXAFS or XANES spectrum in the energy range 4.7-40.0 KeV. The data are recorded in ascending and descending order of energy, on the fly, without any loss of beam time. The QEXAFS mechanical system is outside the vacuum system, and therefore changing the mode of operation from conventional to QEXAFS takes only a few minutes. This instrument allows the acquisition of time resolved data in a variety of systems relevant to electrochemical, photochemical, catalytic, materials, and environmental sciences.

  14. Method for making fine and ultrafine spherical particles of zirconium titanate and other mixed metal oxide systems

    DOE Patents [OSTI]

    Hu, Michael Z.

    2006-05-23T23:59:59.000Z

    Disclosed is a method for making amorphous spherical particles of zirconium titanate and crystalline spherical particles of zirconium titanate comprising the steps of mixing an aqueous solution of zirconium salt and an aqueous solution of titanium salt into a mixed solution having equal moles of zirconium and titanium and having a total salt concentration in the range from 0.01 M to about 0.5 M. A stearic dispersant and an organic solvent is added to the mixed salt solution, subjecting the zirconium salt and the titanium salt in the mixed solution to a coprecipitation reaction forming a solution containing amorphous spherical particles of zirconium titanate wherein the volume ratio of the organic solvent to aqueous part is in the range from 1 to 5. The solution of amorphous spherical particles is incubated in an oven at a temperature .ltoreq.100.degree. C. for a period of time .ltoreq.24 hours converting the amorphous particles to fine or ultrafine crystalline spherical particles of zirconium titanate.

  15. Fine particulate matter source apportionment for the chemical speciation trends network site at Birmingham, Alabama, using positive matrix factorization

    SciTech Connect (OSTI)

    Baumann, K.; Jayanty, R.K.; Flanagan, J.B. [Research Triangle Institute International, NC (United States). Research Triangle Park

    2008-01-15T23:59:59.000Z

    The Positive Matrix Factorization (PMF) receptor model version 1.1 was used with data from the fine particulate matter (PM2.5) Chemical Speciation Trends Network (STN) to estimate source contributions to ambient PM2.5 in a highly industrialized urban setting in the southeastern United States. Model results consistently resolved 10 factors that are interpreted as two secondary, five industrial, one motor vehicle, one road dust, and one biomass burning sources. It was found that most PMF factors did not cleanly represent single source types and instead are 'contaminated' by other sources. Secondary particulate matter formed by atmospheric processes, such as sulfate and secondary OC, contribute the majority of ambient PM2.5 and exhibit strong seasonality 37 {+-} 10% winter vs. 55 {+-} 16% summer average. Motor vehicle emissions constitute the biggest primary PM2.5 mass contribution. In summary, this study demonstrates the utility of the EC tracer method to effectively blank-correct the OC concentrations in the STN dataset. In addition, examination of the effect of input uncertainty estimates on model results indicates that the estimated uncertainties currently being provided with the STN data may be somewhat lower than the levels needed for optimum modeling results. An appendix , available to members on the website www.awma lists stationary sources of PM2.5 within 10 km of the NHBM site and PM2.5 emissions greater than 1 ton per year. 71 refs., 7 figs., 9 tabs.

  16. An advanced control system for fine coal flotation. Fourth quarterly technical progress report, July 1, 1996--September 30, 1996

    SciTech Connect (OSTI)

    Adel, G.T.; Luttrell, G.H.

    1997-03-04T23:59:59.000Z

    A model-based flotation control scheme is being implemented to achieve optimal performance in the handling and treatment of fine coal. The control scheme monitors flotation performance through on-line analysis of ash content. Then, based on the economic and metallurgical performance of the circuit, variables such as reagent dosage, pulp density and pulp level are adjusted using model-based control algorithms to compensate for feed variations and other process disturbances. Recent developments in sensor technology are being applied for on-line determination of slurry ash content. During the fourth quarter of this project, a final attempt was made to calibrate a video-based ash analyzer for use in this application. It was concluded that the low ash content and the coarse particle size of the flotation tailings slurry at the Maple Meadow plant site made the video-based system unsuitable for this application. Plans are now underway to lease a nuclear-based analyzer as the primary sensor for this project.

  17. Near-edge x-ray-absorption fine structure of Pb: A comparison of theory and experiment

    SciTech Connect (OSTI)

    Newville, M.; Livins, P. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States)); Yacoby, Y. (Racah Institute of Physics, Hebrew University, Jerusalem (Israel)); Rehr, J.J.; Stern, E.A. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1993-06-01T23:59:59.000Z

    Two independent techniques are used to obtain the background function for the x-ray-absorption fine structure (XAFS) of pure Pb at energies that are normally inaccessible because they are in the edge. The results of the two techniques are shown to give the same [chi]([ital k]) above a threshold energy in the absorption edge, where the background is 70% of the edge step. The reliability of the XAFS starting at unprecedentedly low [ital k] values (1.5 A[sup [minus]1] above the Fermi energy) allows sensitive tests of several details of theoretical XAFS calculations. Electron-hole-excitation losses in addition to the plasmon-pole loss term are shown to be important, and the Hedin-Lundqvist many-body self-energy is found to be superior to that of Dirac-Hara for pure Pb. One of the presented methods of background removal can be employed for general XAFS analysis, and is easily automated.

  18. Nonperturbative numerical calculation of the fine and hyperfine structure of muonic hydrogen by Breit potential including the effects from the proton size

    E-Print Network [OSTI]

    Pang, Hou-Rong

    2015-01-01T23:59:59.000Z

    By solving the two-body Schordinger equation in a very high precise nonperturbative numerical (NPnum) way, we reexamine the contributions of fine, hyperfine structure splittings of muonic hydrogen based on the Breit potential. The comparison of our results with those by the first order perturbative theory ($^{1st}$PT) in the literature shows, when the structure of proton is considered, the differences between the results by the $^{1st}$PT and NPnum methods are small for the fine and hyperfine splitting of $2P$ state, while are about $-0.009$ meV and $0.08$ meV for the $F=1$ and total hyperfine splitting of $2S$ state of muonic hydrogen, respectively. These differences are larger than the current experimental precision and would be significant to be considered in the theoretical calculation.

  19. Nonperturbative numerical calculation of the fine and hyperfine structure of muonic hydrogen by Breit potential including the effects from the proton size

    E-Print Network [OSTI]

    Hou-Rong Pang; Hai-Qing Zhou

    2015-04-27T23:59:59.000Z

    By solving the two-body Schordinger equation in a very high precise nonperturbative numerical (NPnum) way, we reexamine the contributions of fine, hyperfine structure splittings of muonic hydrogen based on the Breit potential. The comparison of our results with those by the first order perturbative theory ($^{1st}$PT) in the literature shows, when the structure of proton is considered, the differences between the results by the $^{1st}$PT and NPnum methods are small for the fine and hyperfine splitting of $2P$ state, while are about $-0.009$ meV and $0.08$ meV for the $F=1$ and total hyperfine splitting of $2S$ state of muonic hydrogen, respectively. These differences are larger than the current experimental precision and would be significant to be considered in the theoretical calculation.

  20. POC-scale testing of an advanced fine coal dewatering equipment/technique. Quarterly technical progress report, No. 4, July 1995--September 1995

    SciTech Connect (OSTI)

    Groppo, J.G.; Parekh, B.K.

    1995-11-06T23:59:59.000Z

    Froth flotation technique is an effective and efficient process for recovering of ultra-fine (minus 74 {mu}m) clean coal. Economical dewatering of an ultra-fine clean coal product to a 20 percent level moisture will be an important step in successful implementation of the advanced cleaning processes. This project is a step in the Department of Energy`s program to show that ultra-clean coal could be effectively dewatered to 20 percent or lower moisture using either conventional or advanced dewatering techniques. The cost-sharing contract effort is for 36 months beginning September 30, 1994. This report discusses technical progress made during the quarter from July 1 - September 29, 1995.

  1. Engineering development of advanced physical fine coal cleaning technologies: Froth flotation. Quarterly technical progress report No. 16, July 1, 1992--September 30, 1992

    SciTech Connect (OSTI)

    Not Available

    1992-12-31T23:59:59.000Z

    A study conducted by Pittsburgh Energy Technology Center of sulfur emissions from about 1,300 United States coal-fired utility boilers indicated that half of the emissions were the result of burning coals having greater than 1.2 pounds of SO{sub 2} per million BTU. This was mainly attributed to the high pyritic sulfur content of the boiler fuel. A significant reduction in SO{sub 2} emissions could be accomplished by removing the pyrite from the coals by advanced physical fine coal cleaning. An engineering development project was prepared to build upon the basic research effort conducted under a solicitation for research into Fine Coal Surface Control. The engineering development project is intended to use general plant design knowledge and conceptualize a plant to utilize advanced froth flotation technology to process coal and produce a product having maximum practical pyritic sulfur reduction consistent with maximum practical BTU recovery.

  2. DEVELOPMENT OF FINE PARTICULATE EMISSION FACTORS AND SPECIATION PROFILES FOR OIL AND GAS-FIRED COMBUSTION SYSTEMS

    SciTech Connect (OSTI)

    Glenn C. England

    2004-10-20T23:59:59.000Z

    In 1997, the United States Environmental Protection Agency (EPA) promulgated new National Ambient Air Quality Standards (NAAQS) for particulate matter, including for the first time particles with aerodynamic diameter smaller than 2.5 micrometers ({micro}m) referred to as PM2.5. PM2.5 in the atmosphere also contributes to reduced atmospheric visibility, which is the subject of existing rules for siting emission sources near Class 1 areas and new Regional Haze rules. There are few existing data regarding emissions and characteristics of fine aerosols from oil, gas and power generation industry combustion sources, and the information that is available is generally outdated and incomplete. Traditional stationary source air emission sampling methods tend to underestimate or overestimate the contribution of the source to ambient aerosols because they do not properly account for primary aerosol formation, which occurs after the gases leave the stack. Primary aerosol includes both filterable particles that are solid or liquid aerosols at stack temperature plus those that form as the stack gases cool through mixing and dilution processes in the plume downwind of the source. These deficiencies in the current methods can have significant impacts on regulatory decision-making. PM2.5 measurement issues were extensively reviewed by the American Petroleum Institute (API) (England et al., 1998), and it was concluded that dilution sampling techniques are more appropriate for obtaining a representative particulate matter sample from combustion systems for determining PM2.5 emission rate and chemical speciation. Dilution sampling is intended to collect aerosols including those that condense and/or react to form solid or liquid aerosols as the exhaust plume mixes and cools to near-ambient temperature immediately after the stack discharge. These techniques have been widely used in recent research studies. For example, Hildemann et al. (1994) and McDonald et al. (1998) used filtered ambient air to dilute the stack gas sample followed by 80-90 seconds residence time to allow aerosol formation and growth to stabilize prior to sample collection and analysis. More accurate and complete emissions data generated using the methods developed in this program will enable more accurate source-receptor and source apportionment analysis for PM2.5 National Ambient Air Quality Standards (NAAQS) implementation and streamline the environmental assessment of oil, gas and power production facilities. The overall goals of this program were to: (1) Develop improved dilution sampling technology and test methods for PM2.5 mass emissions and speciation measurements, and compare results obtained with dilution and traditional stationary source sampling methods. (2) Develop emission factors and speciation profiles for emissions of fine particulate matter, especially organic aerosols, for use in source-receptor and source apportionment analyses. (3) Identify and characterize PM2.5 precursor compound emissions that can be used in source-receptor and source apportionment analyses.

  3. Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly technical progress report 16, July--September, 1996

    SciTech Connect (OSTI)

    Shields, G.L.; Moro, N.; Smit, F.J.; Jha, M.C.

    1996-10-30T23:59:59.000Z

    The primary goal of this project is the engineering development of two advanced physical fine coal cleaning processes, column flotation and selective agglomeration, for premium fuel applications. The project scope includes laboratory research and bench-scale testing on six coals to optimize these processes, followed by the design, construction, and operation of a 2-t/hr process development unit (PDU). The project began in October, 1992, and is scheduled for completion by September 1997. 28 refs., 13 figs., 19 tabs.

  4. A fine coal circuitry study using column flotation and gravity separation. Technical report, September 1--November 30, 1994

    SciTech Connect (OSTI)

    Honaker, R.Q. [Southern Illinois Univ., Carbondale, IL (United States). Dept. of Mining Engineering; Reed, S. [Kerr-McGee Coal Corp., Oklahoma City, OK (United States)

    1994-12-31T23:59:59.000Z

    Column flotation provides excellent recovery of ultrafine coal while producing low ash content concentrates. However, column flotation is not efficient for treating fine coal containing significant amounts of mixed-phase particles. Fortunately, enhanced gravity separation has proved to have the ability to treat the mixed-phased particles more effectively. A disadvantage of gravity separation is that ultrafine clay particles are not easily rejected. Thus, a combination of these two technologies may provide a circuit that maximizes both the ash and sulfur rejection that can be achieved by physical coal cleaning while maintaining a high energy recovery. This project is studying the potential of using different combinations of gravity separators, i.e., a Floatex hydrosizer and a Falcon Concentrator, and a proven flotation column, which will be selected based on previous studies by the principle investigator. The gravity/flotation circuits will be compared based on their optimum separation performance which will consider ash and total sulfur rejection and energy recovery as well as the probable error (E{sub p}) value obtained from washability analyses. During this reporting period, multi-stage treatment using the Falcon concentrator was conducted on a refuse pond ({minus}100 mesh) coal sample and a {minus}28 mesh run-of-mine coal sample. The results suggest that the Falcon concentrator can make an ideal separation for either sample in a single process. Recleaning was found to improve product grade, however, recovery was reduced sharply. In addition, the groups involved with the in-plant testing of the Floatex Hydrosizer met and organized the test plan which will be conducted at Kerr-McGee`s Galatia preparation plant during the next reporting period. Coal samples for the circuitry tests will be collected during, this time period.

  5. Fine uniform filament superconductors

    DOE Patents [OSTI]

    Riley, Jr., Gilbert N. (Marlborough, MA); Li, Qi (Marlborough, MA); Roberts, Peter R. (Groton, MA); Antaya, Peter D. (Sutton, MA); Seuntjens, Jeffrey M. (Singapore, SG); Hancock, Steven (Worcester, MA); DeMoranville, Kenneth L. (Jefferson, MA); Christopherson, Craig J. (Worcester, MA); Garrant, Jennifer H. (Natick, MA); Craven, Christopher A. (Bedford, MA)

    2002-01-01T23:59:59.000Z

    A multifilamentary superconductor composite having a high fill factor is formed from a plurality of stacked monofilament precursor elements, each of which includes a low density superconductor precursor monofilament. The precursor elements all have substantially the same dimensions and characteristics, and are stacked in a rectilinear configuration and consolidated to provide a multifilamentary precursor composite. The composite is thereafter thermomechanically processed to provide a superconductor composite in which each monofilament is less than about 50 microns thick.

  6. Energy levels, oscillator strengths, radiative decay rates, and fine-structure collision strengths for the Zn-like ions Nb XII and Mo XIII

    SciTech Connect (OSTI)

    Liang, Liang, E-mail: liangll501@163.com; Liu, Xu-yang; Zhou, Chao

    2014-07-15T23:59:59.000Z

    Energy levels, line strengths, oscillator strengths, radiative decay rates, and fine-structure collision strengths are presented for the Zn-like ions Nb XII and Mo XIII. The atomic data are calculated with the AUTOSTRUCTURE code, where relativistic corrections are introduced according to the Breit–Pauli distorted wave approach. We present the calculations of atomic data for 110 fine-structure levels generated from fifteen configurations (1s{sup 2}2s{sup 2}2p{sup 6}3s{sup 2}3p{sup 6}3d{sup 10})4s{sup 2}, 4s4p, 4p{sup 2}, 4s4d, 4s4f, 4s5s, 4p4d, 4s5p, 4s5d, 4p4f, 4p5s, 4d{sup 2}, 4d4f, 4f{sup 2}, and 3d{sup 9}4s{sup 2}4p. Fine-structure collision strengths for transitions from the ground and the first four excited levels are presented at six electron energies (20, 50, 80, 110, 150, and 180 Ryd). Our atomic structure data are compared with the available experimental and theoretical results.

  7. POC-scale testing of an advanced fine coal dewatering equipment/technique. Quarterly technical progress report No. 5, October--December, 1995

    SciTech Connect (OSTI)

    Groppo, J.G.; Parekh, B.K.

    1996-02-01T23:59:59.000Z

    Froth flotation technique is an effective and efficient process for recovering of ultra-fine (minus 74{mu}m) clean coal. Economical dewatering of an ultrafine clean coal product to a 20% level moisture will be an important step in successful implementation of the advanced cleaning processes. The main objective of the proposed program is to evaluate a novel surface modification technique, which utilizes the synergistic effect of metal ions-surfactant combination, for dewatering of ultra-fine clean coal on a proof-of-concept scale of 1 to 2 tph. The novel surface modification technique developed at the the University of Kentucky Center for Applied Energy Research will be evaluated using vacuum, centrifuge, and hyperbaric filtration equipment. Dewatering tests will be conducted using the fine clean coal froth produced by the column flotation units at the Powell Mountain Coal Company, Mayflower Preparation Plant in St. Charles, Virginia. The POC-scale studies will be conducted on two different types of clean coal, namely, high sulfur and low sulfur clean coal. Accomplishments for the past quarter are described.

  8. Demonstrating the efficacy of bioventing using radiotracers

    SciTech Connect (OSTI)

    Baker, R.S. [ENSR Consulting and Engineering, Acton, MA (United States); Ghaemghami, J.; Simkins, S.; Mallory, L.M. [Univ. of Massachusetts, Amherst, MA (United States)

    1994-12-31T23:59:59.000Z

    Direct evidence to support the effectiveness of bioventing was obtained in columns simulating unsaturated zone dynamics. Fine sandy loam from the capillary fringe of a site contaminated with toluene and xylenes was packed into glass columns. Radiolabeled [U-ring-{sup 14}C] toluene and [U-ring-{sup 14}C] m-xylene were separately added to gamma-irradiated control columns and identical nonsterile columns. Toluene (or m-xylene) and CO{sub 2} present in air drawn through the soil were continuously captured in organic vapor and NaOH traps, respectively. The addition of a radiotracer to all columns permitted an accounting of the contaminant mass balance among volatilized, biodegraded, residual, and leached fractions. During two trials involving {sup 14}C-toluene and {sup 14}C-m-xylene, 46 to 57% and 40 to 46%, respectively, of the added {sup 14}C was oxidized to {sup 14}CO{sub 2} in the nonsterile columns, demonstrating that bioremediation had been effective. Volatilization of 75% of added {sup 14}C-toluene and 54% of added {sup 14}C-m-xylene occurred in the sterile controls, whereas the nonsterile columns experienced volatile losses of less than 0.4% and 0.7%, respectively. As virtually no volatile hydrocarbons were detected in the offgas over the course of the bioventing tests from the nonsterile columns, despite the high airflow rate (15 to 20 pore volumes d{sup {minus}1}), offgas treatment may prove unnecessary during bioventing of some field sites.

  9. Uranium partitioning under acidic conditions in a sandy soil aquifer

    SciTech Connect (OSTI)

    Johnson, W.H. [Westinghouse Savannah River Co., Aiken, SC (United States). Savannah River Technology Center]|[Georgia Institute of Technology, Atlanta, GA (United States); Serkiz, S.M. [Westinghouse Savannah River Co., Aiken, SC (United States). Savannah River Technology Center; Johnson, L.M. [Clemson Univ., SC (United States). Environmental Systems Engineering] [and others

    1995-07-01T23:59:59.000Z

    The partitioning of uranium in an aquifer down gradient of two large mixed waste sites was examined with respect to the solution and soil chemistry (e.g., pH redox potential and contaminant concentration) and aqueous-phase chemical speciation. This involved generation of field-derived, batch sorption, and reactive mineral surface sorption data. Field-derived distribution coefficients for uranium at these waste sites were found to vary between 0.40 and 15,000. Based on thermodynamic speciation modeling and a comparison of field and laboratory data, gibbsite is a potential reactive mineral surface present in modified soils at the sites. Uranium partitioning data are presented from field samples and laboratory studies of background soil and the mineral surface gibbsite. Mechanistic and empirical sorption models fit to the field-derived uranium partitioning data show an improvement of over two orders of magnitude, as measured by the normalized sum of errors squared, when compared with the single K{sub d} model used in previous risk work. Models fit to batch sorption data provided a better fit of sorbed uranium than do models fit to the field-derived data.

  10. Frank W. Steimle Sandy Hook Laboratory. Northeast Fisheries Center

    E-Print Network [OSTI]

    and 1985 from three sites in the Mid- dle Atlantic Bight and one site on Georges Bank. Larval recruitment

  11. Field studies of virus transport in a heterogeneous sandy aquifer

    E-Print Network [OSTI]

    Vogel, Jason Robert

    1997-01-01T23:59:59.000Z

    water. Ground water transport models can be used to predict the transport of viruses. However, if current public domain virus transport models are to be used for this purpose, they need to be verified under operating field conditions. To evaluate...

  12. Hurricane Sandy One Year Later: Rebuilding Stronger, More Resilient...

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

    As the President said, there would be zero tolerance for red tape. We took that to heart. After human health and safety, restoring power and our fuel supplies was a top...

  13. Water balance of sandy soils of Niger, West Africa

    E-Print Network [OSTI]

    Payne, William Albert

    1987-01-01T23:59:59.000Z

    . , conditions are too hot or too cold), 2) pests, 3) disease, 4) soils (i. e. , physical or chemical con- straints), and 5) water (i. e. , conditions are too wet or too dry). Kramer (1983) also states that, on the whole, lack of water reduces yields more... so high as to affect aeration. Loomis (1983) stated that variations in b are caused mostly by differences in photos'ynthetic mechanisms (i. e. the C3 photosynthetic mechanism is less efficient than C which is in turn less efficient than the CAM...

  14. Macroarthropod communities of Sandy Springs of East Texas

    E-Print Network [OSTI]

    Gibson, James Randall

    2000-01-01T23:59:59.000Z

    Pag&e C27 Invertcb& ate 1'auna of Boykin Springs. Jasper CO, TX, May 21, 1995, 140 C28 Irn&ertebrate fauna of Red Hills Lake Spring, Sabine CO, TX, May 18. 1995. . 14 I C29 Physiochemical characteristics of temporary and stand&nh& v..., fast flowin? riffles The richness was high v ith both spring and second-order launa . 'jv?rueffu hlfur &to and ( ra&fufcgrrst& r nur& ufrrtu wet e both common at this site Three stoneflies genera, two mayfly genera, furceus sp and ('hevmalopEychc sp...

  15. On the edgeconnectivity of Cartesian product graphs # Sandi Klavzar

    E-Print Network [OSTI]

    Klavzar, Sandi

    edge cut of G#H, then either S is induced by a minimum edge cut of a factor, or S is a set of edges is given and the structure of minimum edge cuts is described. It is also proved that the connectivity product of graphs; edge­connectivity; minimum edge cuts; AMS subject classification (2000): 05C40 1

  16. Nitrogen Dynamics in Sandy Freshwater Sediments (Saginaw Bay, Lake Huron)

    E-Print Network [OSTI]

    of added 15NH4 + from lake water passing over dark sediment cores. Sediment-water fluxes of nitrogen at the sediment- water interface is derived from ammonium pro- duced from organic matter mineralization in surface ABSTRACT. Sediment-water nitrogen fluxes and transformations were examined at two sites in Sagi- naw Bay

  17. acid sandy soils: Topics by E-print Network

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

    incorporated into in situ soil cores at a rate of 350 kg N ha-1 and compared to unamended controls. Microbial properties were determined by microbial biomass N, dehydrogenase...

  18. acid sandy soil: Topics by E-print Network

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

    incorporated into in situ soil cores at a rate of 350 kg N ha-1 and compared to unamended controls. Microbial properties were determined by microbial biomass N, dehydrogenase...

  19. Modeling the dynamics and depositional patterns of sandy rivers

    E-Print Network [OSTI]

    Jerolmack, Douglas J

    2006-01-01T23:59:59.000Z

    This thesis seeks to advance our understanding of the dynamic nature, spatial organization and depositional record of topography in sand-bedded rivers. I examine patterns and processes over a wide range of scales, on Earth ...

  20. Hurricane Sandy and Our Energy Infrastructure | Department of Energy

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy: Thomas P.Department of Energy Internet ExplorerDepartmentHCDavid

  1. Hurricane Sandy-Nor'easter Situation Reports | Department of Energy

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy: Thomas P.Department of Energy Internet ExplorerDepartmentHCDavidOn

  2. NREL: Technology Deployment - FEMA Engages NREL in Hurricane Sandy Recovery

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated CodesTransparency Visit |InfrastructureAerial photo of the SouthEffort

  3. Hurricane Sandy One Year Later: Rebuilding Stronger, More Resilient

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department ofOral Testimony of SecretaryBetweenTheMarch 2,the

  4. Hurricane Sandy Situation Report #3 | Department of Energy

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department ofOral Testimony of SecretaryBetweenTheMarch 2,theOFFICE OF

  5. OVERVIEW OF RESPONSE TO HURRICANE SANDY-NOR'EASTER AND

    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 DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment of Order No.of Energy251News ORSSABTESTIMONY

  6. Sandy Hook, Connecticut: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to:RoscommonSBYSalton SeaBasinSandusky, Ohio: Energy ResourcesHook,

  7. Sandy Ridge, Pennsylvania: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to:RoscommonSBYSalton SeaBasinSandusky, Ohio: Energy

  8. Sandy Springs, Georgia: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to:RoscommonSBYSalton SeaBasinSandusky, Ohio: EnergySprings, Georgia:

  9. Responding To Hurricane Sandy: DOE Situation Reports | Department of Energy

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCO OverviewRepository | Department of EnergyDepartmentResponding To

  10. Working Together to Recover and Rebuild After Hurricane Sandy | Department

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sureReportsofDepartmentSeriesDepartment of Energyof Energy Together

  11. Students Innovate to Address Gas Shortages Following Hurricane Sandy |

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssues DOE's NuclearSpurringSteamDepartment of Energy Innovate to

  12. Internal Audit Director Gail Lewis Sandy Glazier, Executive Secretary

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes | National NuclearInterlibrary Loan Interlibrary Loan The

  13. MHK Projects/Sandy Cove | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf KilaueaInformationCygnet.7413°, -155.488°Information

  14. Sandy Valley, Nevada: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

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  15. Working Together to Recover and Rebuild After Hurricane Sandy | Department

    Office of Environmental Management (EM)

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  16. The Energy Department Prepares for Hurricane Sandy | Department of Energy

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

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  17. Ashton-Sandy Spring, Maryland: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

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  18. Hurricane Sandy and Our Energy Infrastructure | Department of Energy

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

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  19. Students Innovate to Address Gas Shortages Following Hurricane Sandy |

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

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  20. The Composition and Properties of Some Texas Soils.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1907-01-01T23:59:59.000Z

    .lo .28 : ... .. " Anderson County. .02 .03 .07 .05 ! . Bexar County. .02 .04 .05 .04 E .... .. '. fine sand, Houston County.01 .05 .13 .10 ! Iloam,HoustonC. .02 .03 .18 .09 ! loam, . . Bexar County. ............. .02 .09 .17 .05 ! . nsol ble. 38.21 Orangeburg Series. - 1. fine sand, -ouston County. .......... .03 .03 .14 .14 96.75 ~exar County.. ........... .02 .05 .25 .I8 95...

  1. The Goldstone theorem protects naturalness, and the absence of Brout-Englert-Higgs fine-tuning, in spontaneously broken SO(2)

    E-Print Network [OSTI]

    Bryan W. Lynn; Glenn D. Starkman

    2014-11-11T23:59:59.000Z

    The Gell-Mann-Levy (GML), Schwinger and Standard Models were previously shown to lack a Brout-Englert-Higgs (BEH) fine-tuning problem due to quadratic divergences, with finite Euclidean cut-off \\Lambda, because of the symmetries obeyed by all O(\\Lambda^2) contributions. We extend those results to finite contributions from certain M_{Heavy}^2>> m_{BEH}^2 particles in SO(2) versions of GML and Schwinger. We demonstrate explicit 1-loop physical naturalness for two SO(2) singlet examples: a heavy real scalar S and a right-handed Type 1 see-saw Majorana neutrino. We prove that for low |q^2| the heavy degrees of freedom contribute, at worst, marginal operators in spontaneously broken SO(2) Schwinger. The key GML lesson from these examples is that the pseudo Nambu-Goldstone boson (NGB) mass-squared must be properly renormalized. A true NGB value, m_3^2 = 0, is then protected by the Goldstone theorem. For the Schwinger model, two crucial observations emerge: global Ward-Takahashi identities (WTI) force all relevant operators into the pseudo-NGB mass-squared; and WTI enforce the Goldstone theorem by forbidding all relevant operator contributions in the spontaneously broken Goldstone mode, \\pi_3 is a massless NGB there. Goldstone mode, with weak-scale m_{BEH}^2 \\& ^2, is not-fine-tuned even as a low-energy effective theory with certain high-mass-scale extensions. Its "Goldstone Exceptional Naturalness (GEN)," where all relevant operators vanish, a powerful suppression of fine-tuning, is simply another (albeit un-familiar) consequence of WTI, spontaneous symmetry breaking and the Goldstone theorem. If GEN can somehow be extended to the Standard Model (SM), there should be no expectation that LHC will discover any Beyond the SM physics unrelated to neutrino mixing, i.e. the only known experimentally necessary modification of the Standard Model plus General Relativity paradigm.

  2. Separable-spherical-wave approximation: Application to x-ray-absorption fine-structure multiple scattering in ReO sub 3

    SciTech Connect (OSTI)

    Houser, B. (Department of Physics, MS 68, Eastern Washington University, Cheney, Washington 99004 (United States)); Ingalls, R.; Rehr, J.J. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1992-04-01T23:59:59.000Z

    Rehr and Albers have shown that the exact x-ray-absorption fine-structure (XAFS) propagator may be expanded in a separable matrix form, and that the lowest-order term in the expansion yields XAFS formulas that contain spherical-wave corrections, yet retain the simplicity of the plane-wave approximation. This separable-spherical-wave approximation was used to model the multiple-scattering contributions to the XAFS spectrum of rhenium trioxide. We report a modest improvement over the plane-wave approximation.

  3. The effect of sources of nitrogen on nitrate formation and nitrogen uptake by cotton plants growing on Miller clay loam

    E-Print Network [OSTI]

    Marcos, Zilmar Ziller

    1958-01-01T23:59:59.000Z

    ~ ~ ~ ~ ~ 4 82 e a a 89 Eitrogen Content of' Cotton Leaves. . . . . . . . 4$ Phosphorus Content of Cotton Ieaves. . . . ~ . . 50 Potassium Content of Cott, on Ieaves . DXSCVSSXOE o o ~ a a e a ~ o ~ ~ ~ ~ o ~ ~ ~ ~ ~ 60 Effect of' Bate and, Source of...' Nitrogen on Bitte CcnoentI'Stion e e o e o ~ ~ ~ o a a o o Effect of Bate and. Source of Eitxogen on Soil pB. 62 Effect of Bate and. Source of' Of Eitl'Ogeno a o e e e o Eitrogen on ~ ~ 0 the Uptake 62 Effect of Bate and Source of Of Phosphorusi...

  4. Soils of Grayson, Lee, McLennan, Titus, and Tyler Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1916-01-01T23:59:59.000Z

    ,,.iocphate to supply the phogphoric acid. Tf truck crops were to be grown on this soil, some potash would probahlp be needed. In the case of the Wilson clay loam, the analysis indicates the need ? phosphoric acid first. With Wilson clap, also of Grapson... of this area are, as a rule, well supplied with total phos- phoric acid, though the samples of Durant fine sand, Houston clay loam, and MTilson clay, are low in this respect. The anklyses indicate that a nnuinber of these soils should, however, respond...

  5. Soils of Henderson, Hidalgo, Milam, Nacogdoches, Navarro, Wichita, Willacy and Victoria Counties.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1933-01-01T23:59:59.000Z

    foods in the soil. For example, with the Susquehanna fine loam of Henderson County (No. 21888, Table 5) the corn possibility for total nitrogen is 18, for active phosphoric acid is 18, and for active potash 61. The soil is probably deficient both... in phosphoric acid and in nitrogen. This may be compared with the Wilson clay loam of Henderson County, which has a corn possibility of 35 bushels for nitrogen, 33 for phosphoric acid, and 204 for potash. Other comparisons can be made from the tables...

  6. Development of fine-resolution analyses and expanded large-scale forcing properties. Part II: Scale-awareness and application to single-column model experiments

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Feng, Sha; Vogelmann, Andrew M.; Li, Zhijin; Liu, Yangang; Lin, Wuyin; Zhang, Minghua; Toto, Tami; Endo, Satoshi

    2015-01-27T23:59:59.000Z

    Fine-resolution three-dimensional fields have been produced using the Community Gridpoint Statistical Interpolation (GSI) data assimilation system for the U.S. Department of Energy’s Atmospheric Radiation Measurement Program (ARM) Southern Great Plains region. The GSI system is implemented in a multi-scale data assimilation framework using the Weather Research and Forecasting model at a cloud-resolving resolution of 2 km. From the fine-resolution three-dimensional fields, large-scale forcing is derived explicitly at grid-scale resolution; a subgrid-scale dynamic component is derived separately, representing subgrid-scale horizontal dynamic processes. Analyses show that the subgrid-scale dynamic component is often a major component over the large-scale forcing for grid scalesmore »larger than 200 km. The single-column model (SCM) of the Community Atmospheric Model version 5 (CAM5) is used to examine the impact of the grid-scale and subgrid-scale dynamic components on simulated precipitation and cloud fields associated with a mesoscale convective system. It is found that grid-scale size impacts simulated precipitation, resulting in an overestimation for grid scales of about 200 km but an underestimation for smaller grids. The subgrid-scale dynamic component has an appreciable impact on the simulations, suggesting that grid-scale and subgrid-scale dynamic components should be considered in the interpretation of SCM simulations.« less

  7. Laboratory investigation of the extrusion of North Dakota lignite fines for fixed-bed gasification. Report for September 1982-December 1983

    SciTech Connect (OSTI)

    Furman, A.H.; Smith, D.P.

    1984-01-01T23:59:59.000Z

    Lignite coal will be used as the gasifier feedstock in the first commercial substitute high-Btu fuels plant to be built in the U.S. The Great Plains plant, which is due to go on line in 1984, will use O2 blown, fixed-bed gasifiers to convert lignite coal into a medium Btu gas which is then upgraded to pipeline quality gas for final distribution. Since the fixed-bed gasifier requires a sized feedstock, up to 35% of the incoming run-of-mine lignite could be rejected as fines unless an alternative use can be found for the-1/4-inch fraction. Evaluation tests were run in the General Electric 6-inch single screw coal extruder to test the suitability of this process for utilization of lignite fines. Both organic and inorganic binders were evaluated. Tests were performed on the extrudate to evaluate their mechanical strength as well as their ability to withstand exposure to a high temperature gasification environment. Successful compacts were produced using bentonite clay, processed lignite coal tar, and a commercial coke oven pitch as the binding agent.

  8. Development of fine-resolution analyses and expanded large-scale forcing properties. Part II: Scale-awareness and application to single-column model experiments

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Feng, Sha [Univ. of California at Los Angeles, Los Angeles, CA (United States); California Inst. of Technology, Pasadena, CA (United States); Vogelmann, Andrew M. [Brookhaven National Lab. (BNL), Upton, NY (United States); Li, Zhijin [California Inst. of Technology (CalTech), Pasadena, CA (United States); Univ. of California at Los Angeles, Los Angeles, CA (United States); Liu, Yangang [Brookhaven National Lab. (BNL), Upton, NY (United States); Lin, Wuyin [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhang, Minghua [Stony Brook Univ., NY (United States); Toto, Tami [Brookhaven National Lab. (BNL), Upton, NY (United States); Endo, Satoshi [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-27T23:59:59.000Z

    Fine-resolution three-dimensional fields have been produced using the Community Gridpoint Statistical Interpolation (GSI) data assimilation system for the U.S. Department of Energy’s Atmospheric Radiation Measurement Program (ARM) Southern Great Plains region. The GSI system is implemented in a multi-scale data assimilation framework using the Weather Research and Forecasting model at a cloud-resolving resolution of 2 km. From the fine-resolution three-dimensional fields, large-scale forcing is derived explicitly at grid-scale resolution; a subgrid-scale dynamic component is derived separately, representing subgrid-scale horizontal dynamic processes. Analyses show that the subgrid-scale dynamic component is often a major component over the large-scale forcing for grid scales larger than 200 km. The single-column model (SCM) of the Community Atmospheric Model version 5 (CAM5) is used to examine the impact of the grid-scale and subgrid-scale dynamic components on simulated precipitation and cloud fields associated with a mesoscale convective system. It is found that grid-scale size impacts simulated precipitation, resulting in an overestimation for grid scales of about 200 km but an underestimation for smaller grids. The subgrid-scale dynamic component has an appreciable impact on the simulations, suggesting that grid-scale and subgrid-scale dynamic components should be considered in the interpretation of SCM simulations.

  9. In situ X-ray absorption fine structure studies of foreign metal ions in nickel hydrous oxide electrodes in alkaline electrolytes

    SciTech Connect (OSTI)

    Kim, Sunghyun; Tryk, D.A.; Scherson, D. (Case Western Reserve Univ., Cleveland, OH (United States)); Antonio, M.R. (Argonne National Lab., IL (United States)); Carr, R. (Stanford Synchrotron Radiation Lab., CA (United States))

    1994-10-06T23:59:59.000Z

    Aspects of the structural and electronic properties of hydrous oxide films of composite (9:1) Ni/Co and (9:1) Ni/Fe, prepared by electrodeposition, have been examined in alkaline electrolytes using in situ X-ray absorption fine structure (XAFS). An analysis of the X-ray absorption near the edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) for the Co and Fe K-edges of these composite hydrous oxides revealed that, regardless of the oxidation state of nickel sites in the films, the guest metal ions are present as Co[sup 3+] and Fe[sup 3+] and that the cobalt-oxygen distance d(Co-O) = 1.9 [+-] 0.02 [angstrom] and d(Fe-O) = 1.92 [+-] 0.02 [angstrom]. The latter values are in excellent agreement with d(Me-O) (Me = Co or Fe) in CoOOH and [beta]- and [gamma]-FeOOH, respectively, determined by conventional X-ray diffraction. Two clearly defined Me-Ni first coordination shells could be observed in the Fourier transforms (FT) of the K-edge EXAFS of the guest metal recorded at a potential at which both Ni[sup 2+] and Ni[sup 3+] sites are expected to be present. 28 refs., 10 figs., 3 tabs.

  10. Engineering development of advanced physical fine coal cleaning technologies: Froth flotation. Quarterly technical progress report No. 11, April 1, 1991--June 30, 1991

    SciTech Connect (OSTI)

    Not Available

    1991-12-31T23:59:59.000Z

    This document a quarterly report prepared in accordance with the project reporting requirements covering the period from July 1, 1992 to September 30, 1992. This report provides a summary of the technical work undertaken during this period, highlighting the major results. A brief description of the work done prior to this quarter is provided in this report under the task headings. The overall project scope of the engineering development project is to conceptually develop a commercial flowsheet to maximize pyritic sulfur reduction at practical energy recovery values. This is being accomplished by utilizing the basic research data on the surface properties of coal, mineral matter and pyrite obtained from the Coal Surface Control for Advanced Fine Coal Flotation Project, to develop this conceptual flowsheet. The conceptual flowsheet must be examined to identify critical areas that need additional design data. This data will then be developed using batch and semi-continuous bench scale testing. In addition to actual bench scale testing, other unit operations from other industries processing fine material will be reviewed for potential application and incorporated into the design if appropriate. The conceptual flowsheet will be revised based on the results of the bench scale testing and areas will be identified that need further larger scale design data verification, to prove out the design.

  11. Spontaneously broken Standard Model (SM) symmetries and the Goldstone theorem protect the Higgs mass and ensure that it has no Higgs Fine Tuning Problem (HFTP)

    E-Print Network [OSTI]

    Bryan W. Lynn

    2012-08-08T23:59:59.000Z

    B.W.Lee/K.Symanzik proved that Ward-Takahashi identities and tadpole renormalization force all ultra-violet quadratic divergences (UV-QD) to be absorbed into the physical renormalized pseudo-scalar pion mass in O(4)LSM (linear sigma models) across the Higgs-VEV vs. Pion-Mass-Squared half-plane. We show that all UV-QD vanish identically in the "Goldstone mode" Zero-Pion-Mass spontaneous symmetry breaking (SSB) limit. The Higgs mass is protected to all loop-orders and Goldstone-mode O(4)LSM has no Higgs fine-tuning problem (HFTP). We insist that self-consistent renormalization of the Standard Model (SM) requires that the scalar-sector UV-QD-corrected effective Lagrangians of the SM and Goldstone-mode O(4)LSM are smoothly identical in the zero-gauge-coupling limit. Lee/Symanzik's two conditions must be imposed on the SM: the Higgs cannot simply disappear into the vacuum; SM Nambu-Goldstone boson (NGB) masses (i.e. the pre-Higgs-mechanism longitudinal Wand Z masses) must vanish identically. At 1-loop, the Higgs-VEV is neither UV-QD divergent nor fine-tuned. Loop-induced-artefact NGB masses absorb all SM UV-QD, which vanish identically in the Zero-NGB-Mass limit, i.e. the SSB SM. Simply another (un-familiar) consequence of the Goldstone theorem, no fine-tuning is necessary for a weak-scale Higgs mass. Our SM results can (almost certainly) be extended to include all-orders perturbative electro-weak and QCD loops. SM symmetries (as realized by SSB and the Goldstone theorem) are sufficient to protect the Higgs mass, and ensure that the SM does not suffer a HFTP. It is un-necessary to impose any new Beyond the Standard-Model (BSM) symmetries. Mistaken belief in a 1-loop SM HFTP has historically driven an expectation that new BSM physics must appear < 14 TeV. But our results re-open the possibility that LHC discovery potential might be confined to SM physics.

  12. Pilot Demonstration of Technology for the Production of High Value Materials from the Ultra-Fine (PM2.5) Fraction of Coal Combustion Ash

    SciTech Connect (OSTI)

    T. L. Robl; J. G. Groppo; R. Rathbone; B. Marrs; R. Jewell

    2008-07-18T23:59:59.000Z

    The overall objective of this research was to determine the feasibility of recovering a very fine fraction of fly ash, that is 5 microns in diameter or less and examining the characteristics of these materials in new or at least less traditional applications. These applications included as a polymer filler or as a 'super' pozzolanic concrete additive. As part of the effort the ash from 6 power plants was investigated and characterized. This work included collection from ESP Hoppers and ponds. The ash was thoroughly characterized chemically and physically. Froth flotation was used to reduce the carbon and testing showed that flotation could effectively reduce carbon to acceptable levels (i.e. 0.5% LOI) for most of the substrates tested. in order to enable eventual use as fillers. Hydraulic classification was used in the separation of the fine ash from the coarse ash. Hydraulic classification requires the ash to be dispersed to be effective and a range of dispersants were tested for adsorption as well as sedimentation rate. A wide range of dosages were required (0.3 to 10 g/kg). In general the ponded ash required less dispersant. A model was developed for hydraulic classification. A pilot-scale hydraulic classifier was also designed and operated for the project. Product yields of up to 21% of feed solids were achieved with recoveries of <5 {micro}m particles as high as 64%. Mean particle sizes (D{sub 50}) of the ultra fine ash (UFA) products varied from 3.7 to 10 {micro}m. A patent was filed on the classifier design. A conceptual design of a Process Demonstration Unit (PDU) with a feed rate of 2 tons of raw ash feed per hour was also completed. Pozzolanic activity was determined for the UFA ashes in mortars. In general the overall strength index was excellent with values of 90% achieved in 3 days and {approx}100% in 7 days. Three types of thermoplastic polymers were evaluated with the UFA as a filler: high density polyethylene, thermoplastic elastomer and polyethylene terphthalate filled polymers were prepared and subjected to SEM analysis to verify that the UFA was well dispersed. The addition of fillers increased the modulus of the HDPE composite, but decreased both the offset yield stress and offset yield strain, showing that the fillers essentially made the composite stiffer but the transition to plastic deformation occurred earlier in filled HDPE as stress was applied. Similar results were obtained with TPE, however, the decrease in either stress or strain at offset yield were not as significant. Dynamic mechanical analyses (DMA) were also completed and showed that although there were some alterations in the properties of the HDPE and TPE, the alterations are small, and more importantly, transition temperatures are not altered. The UFA materials were also tested in expanded urethanes, were improvements were made in the composites strength and stiffness, particularly for lighter weight materials. The results of limited flammability and fire safety testing were encouraging. A flowsheet was developed to produce an Ultra-Fine Ash (UFA) product from reclaimed coal-fired utility pond ash. The flowsheet is for an entry level product development scenario and additional production can be accommodated by increasing operating hours and/or installing replicate circuits. Unit process design was based on experimental results obtained throughout the project and cost estimates were derived from single vendor quotes. The installation cost of this plant is estimated to be $2.1M.

  13. Helium and Deuterium Abundances as a Test for the Time Variation of the Fine Structure Constant and the Higgs Vacuum Expectation Value

    E-Print Network [OSTI]

    Nidal Chamoun; Susana J. Landau; Mercedes E. Mosquera; Hector Vucetich

    2006-12-21T23:59:59.000Z

    We use the semi-analytic method of \\citet{Esma91} to calculate the abundances of Helium and Deuterium produced during Big Bang nucleosynthesis assuming the fine structure constant and the Higgs vacuum expectation value may vary in time. We analyze the dependence on the fundamental constants of the nucleon mass, nuclear binding energies and cross sections involved in the calculation of the abundances. Unlike previous works, we do not assume the chiral limit of QCD. Rather, we take into account the quark masses and consider the one-pion exchange potential, within perturbation theory, for the proton-neutron scattering. However, we do not consider the time variation of the strong interactions scale but attribute the changes in the quark masses to the temporal variation of the Higgs vacuum expectation value. Using the observational data of the helium and deuterium, we put constraints on the variation of the fundamental constants between the time of nucleosynthesis and the present time.

  14. Engineering development of advanced physical fine coal cleaning technologies: Froth flotation. Quarterly technical progress report No. 15, April 1, 1992--June 30, 1992

    SciTech Connect (OSTI)

    Not Available

    1993-02-12T23:59:59.000Z

    The Department of Energy (DOE) awarded a contract entitled ``Engineering Development of Advanced Physical Fine Coal Cleaning Technology - Froth Flotation``, to ICF Kaiser Engineers with the following team members, Ohio Coal Development Office, Babcock and Wilcox, Consolidation Coal Company, Eimco Process Equipment Company, Illinois State Geological Survey, Virginia Polytechnic Institute and State University, Process Technology, Inc. This document a quarterly report prepared in accordance with the project reporting requirements covering the period from July 1, 1992 to September 30, 1992. This report provides a summary of the technical work undertaken during this period, highlighting the major results. A brief description of the work done prior to this quarter is provided in this report under the task headings.

  15. Mexico City Aerosol Analysis during MILAGRO using High Resolution Aerosol Mass Spectrometry at the Urban Supersite (T0). Part 1: Fine Particle Composition and Organic Source Apportionment

    SciTech Connect (OSTI)

    Aiken, Allison; Salcedo, D.; Cubison, Michael J.; Huffman, J.; DeCarlo, Peter; Ulbrich, Ingrid M.; Docherty, Kenneth S.; Sueper, D. T.; Kimmel, Joel; Worsnop, Douglas R.; Trimborn, Achim; Northway, Megan; Stone, Elizabeth A.; Schauer, James J.; Volkamer, Rainer M.; Fortner, Edward; de Foy, B.; Wang, Jian; Laskin, Alexander; Shutthanandan, V.; Zheng, Junsheng; Zhang, Renyi; Gaffney, Jeffrey S.; Marley, Nancy A.; Paredes-Miranda, Guadalupe L.; Arnott, W. P.; Molina, Luisa T.; Sosa, G.; Jimenez, Jose L.

    2009-09-11T23:59:59.000Z

    Submicron aerosol was analyzed during the MILAGRO field campaign in March 2006 at the T0 urban supersite in Mexico City with a High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) and complementary instrumentation. Mass concentrations, diurnal cycles, and size distributions of inorganic and organic species are similar to results from the CENICA supersite in April 2003 with organic aerosol (OA) comprising about half of the fine PM mass. Positive Matrix Factorization (PMF) analysis of the high resolution OA spectra identifies three major components: chemically-reduced urban primary emissions (hydrocarbon-like OA, HOA), oxygenated OA (OOA, mostly secondary OA or SOA), and biomass burning OA (BBOA) that correlates with levoglucosan and acetonitrile. BBOA includes several very large plumes from regional fires and likely also some refuse burning.

  16. The determination of interfacial structure and phase transitions in Al/Cu and Al/Ni interfaces by means of surface extended x-ray absorption fine structure

    SciTech Connect (OSTI)

    Barrera, E.V. (Rice Univ., Houston, TX (United States). Dept. of Mechanical Engineering and Materials Science); Heald, S.M. (Brookhaven National Lab., Upton, NY (United States))

    1991-01-01T23:59:59.000Z

    Surface extended x-ray absorption fine structure (SEXAFS) was used to investigate the interfacial conditions of Al/Cu and Al/Ni shallow buried interfaces. Previous studies using glancing angle extended x-ray absorption fine structure, x-ray reflectivity, photoemission, and SEXAFS produced conflicting results as to whether or not the interfaces between Al and Cu and Al and Ni were reacted upon room temperature deposition. In this study polycrystalline bilayers of Al/Cu and Al/Ni and trilayers of Al/Cu/Al and Al/Ni/Al were deposited on tantalum foil at room temperature in ultra high vacuum and analyzed to evaluate the reactivity of these systems on a nanometer scale. It become overwhelming apparent that the interfacial phase reactions were a function of the vacuum conditions. Samples deposited with the optimum vacuum conditions showed reaction products upon deposition at room temperature which were characterized by comparisons to standards and by least squares fitting the be CuAl{sub 2} and NiAl{sub 3} respectively. The results of this study that the reacted zone thicknesses were readily dependent on the deposition parameters. For both Al on Cu and Al on Ni as well as the metal on Al conditions 10{Angstrom} reaction zones were observed. These reaction zones were smaller than that observed for bilayers of Al on Cu (30{Angstrom}) and Al on Ni (60{Angstrom}) where deposition rates were much higher and samples were much thicker. The reaction species are evident by SEXAFS, where the previous photoemission studies only indicated that changes had occurred. Improved vacuum conditions as compared to the earlier experiments is primarily the reason reactions on deposition were seen in this study as compared to the earlier SEXAFS studies.

  17. The determination of interfacial structure and phase transitions in Al/Cu and Al/Ni interfaces by means of surface extended x-ray absorption fine structure

    SciTech Connect (OSTI)

    Barrera, E.V. [Rice Univ., Houston, TX (United States). Dept. of Mechanical Engineering and Materials Science; Heald, S.M. [Brookhaven National Lab., Upton, NY (United States)

    1991-12-31T23:59:59.000Z

    Surface extended x-ray absorption fine structure (SEXAFS) was used to investigate the interfacial conditions of Al/Cu and Al/Ni shallow buried interfaces. Previous studies using glancing angle extended x-ray absorption fine structure, x-ray reflectivity, photoemission, and SEXAFS produced conflicting results as to whether or not the interfaces between Al and Cu and Al and Ni were reacted upon room temperature deposition. In this study polycrystalline bilayers of Al/Cu and Al/Ni and trilayers of Al/Cu/Al and Al/Ni/Al were deposited on tantalum foil at room temperature in ultra high vacuum and analyzed to evaluate the reactivity of these systems on a nanometer scale. It become overwhelming apparent that the interfacial phase reactions were a function of the vacuum conditions. Samples deposited with the optimum vacuum conditions showed reaction products upon deposition at room temperature which were characterized by comparisons to standards and by least squares fitting the be CuAl{sub 2} and NiAl{sub 3} respectively. The results of this study that the reacted zone thicknesses were readily dependent on the deposition parameters. For both Al on Cu and Al on Ni as well as the metal on Al conditions 10{Angstrom} reaction zones were observed. These reaction zones were smaller than that observed for bilayers of Al on Cu (30{Angstrom}) and Al on Ni (60{Angstrom}) where deposition rates were much higher and samples were much thicker. The reaction species are evident by SEXAFS, where the previous photoemission studies only indicated that changes had occurred. Improved vacuum conditions as compared to the earlier experiments is primarily the reason reactions on deposition were seen in this study as compared to the earlier SEXAFS studies.

  18. In situ x-ray absorption fine structure and optical reflectance studies of electrodeposited nickel hydrous oxide films in alkaline electrolytes.

    SciTech Connect (OSTI)

    Hu, Y.; Bae, I. T.; Mo, Y.; Antonio, M. R.; Scherson, D. A.; Chemistry; Case Western Reserve Univ.

    1997-01-01T23:59:59.000Z

    X-ray absorption fine structure (XAFS) and optical reflectance spectroscopy (RS) have been used to examine in situ electronic and structural aspects of nickel hydrous oxide, a-Ni(OH)2(hyd), electrodes supported on gold in alkaline electrolytes as a function of their state of charge. The extended X-ray absorption fine structure (EXAFS) of a-Ni(OH)2(hyd) electrodes in the uncharged (UC, or discharged) and overcharged (OC, or fully charged) states yielded, in each case, a single set of two distinct nearest-neighbor shells, with distances, d(Ni-O)1 = 2.05 {+-} 0.02 {angstrom} and d(Ni-Ni)1 = 3.11 {+-} 0.02 {angstrom} for UC, and d(Ni-O)1 = 1.87 {+-} 0.02 {angstrom} and d(Ni-Ni)1 = 2.83 {+-} 0.02 {angstrom} for OC. The in situ EXAFS of films allowed to self-discharge following overcharge could be fit with contributions from both sets of shells, suggesting that only two types of nickel sites are sufficient to account for the redox chemistry of this material. These data, in addition to information derived both from quantitative X-ray absorption near-edge structure (XANES) and optical RS in the visible range, indicate that the excess anodic charge, i.e., beyond the one-electron oxidation of Ni2+ sites, observed during the first oxidation of freshly prepared a-Ni(OH)2(hyd) electrodes may not be related to oxidation state changes involving nickel sites in the lattice, and, therefore, do not support the existence of nickel sites with a formal oxidation state higher than three for charged or overcharged electrodes in this media.

  19. Evaluation of powdered elemental iron as a plant nutrient in Texas soils 

    E-Print Network [OSTI]

    Schneider, Russell Paul

    1972-01-01T23:59:59.000Z

    elemental z"e was sigzzificantly lower than ttzat of the control and also sign!. ficantly lower t!oan tnc pII wnen elemental Fe w-s a&!de&1 at high ra*es in t ze absence of fertili?er (Table 7) . Tlze 1&1! chan, , c &&'zs likely due to t!ze I s- f sr... experiment was conducted on a Clareville sandy clay loam soi. l at Beeville, Texas, to determine if various Fe materials would alleviate the chlorosis induced by severe Fe deficiency and increase the yield of grain sorghum. The chlorosi. s in the grain...

  20. Easy Gardening.....Carrots

    E-Print Network [OSTI]

    Cotner, Sam; Masabni, Joseph

    2009-05-28T23:59:59.000Z

    feet of row per person should supply enough fresh car- rots for table use. One foot of row will yield about 1 pound of carrots. Siteselection Carrots do best in loose, sandy loam soils that are well drained. In heavy soils, they mature more slowly... with the car- rots, pull and eat them as they mature. To prevent the soil from crusting, scratch the soil lightly around the plants and sprinkle the row with water often to prevent crusting, or cover the seeds with vermiculite or sand. This is especially help...