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


1

Reaction of Calcite and Dolomite with In-Situ Gelled Acids, Organic Acids, and Environmentally Friendly Chelating Agent (GLDA)  

E-Print Network (OSTI)

Well stimulation is the treatment remedy when oil/gas productivity decreases to unacceptable economical limits. Well stimulation can be carried out through either "Matrix Acidizing" or fracturing with both "Hydraulic Fracturing" and "Acid Fracturing" techniques. "Matrix Acidizing" and "Acid Fracturing" applications involve injecting an acid to react with the formation and dissolve some of the minerals present and recover or increase the permeability. The permeability enhancement is achieved by creating conductive channels "wormholes" in case of "Matrix Acidizing" or creating uneven etching pattern in case of "Acid Fracturing" treatments. In both cases, and to design a treatment successfully, it is necessary to determine the distance that the live acid will be able to penetrate inside the formation, which in turn, determines the volume of the acid needed to carry out the treatment. This distance can be obtained through lab experiments, if formation cores are available, or estimated by modeling the treatment. The successful model will depend on several chemical and physical processes that take place including: the acid transport to the surface of the rock, the speed of the reaction of the acid with the rock, which is often referred to as "Reaction Rate", and the acid leak-off. The parameters describing these processes such as acid diffusion coefficient and reaction kinetics have to be determined experimentally to ensure accurate and reliable modeling. Hydrochloric acid and simple organic acids such as acetic and citric acids have been used extensively for stimulation treatments. The diffusion and reaction kinetics of these acids, in a straight form, were investigated thoroughly in literature. However, solely these acids are used in a simple form in the field. Acid systems such as gelled, crosslinked gelled, surfactant-based, foam-based, or emulsified acids are used to either retard the reaction rate or to enhance acid diversion. Literature review shows that additional work is needed to understand the reaction and report the diffusion and kinetics of these systems with carbonate. In addition, a new chelating agent (GLDA) was recently introduced as a stand-alone stimulating fluid. The kinetics and the mass transfer properties of this acid were not studied before. Therefore, the objective of this work is to study the reaction of different acid systems with calcite and dolomite and report the mass transport and kinetic data experimentally. Lactic acid, a chelating agent (GLDA), and in-situ gelled HCl-formic acids were investigated in this study. In some cases, rheology measurements and core flood experiments were conducted. The data were combined with the reaction study to understand the behavior of these acids and examine their efficiency if injected in the formation.

Rabie, Ahmed 1978-

2012-12-01T23:59:59.000Z

2

Energetics of Sedimentary Dolomites  

Science Conference Proceedings (OSTI)

... To aid in the understanding of this phenomena, the enthalpies of formation of sedimentary non-stoichiometric dolomite samples have been ...

2006-07-20T23:59:59.000Z

3

Doppler Lidar (DL) Handbook  

SciTech Connect

The Doppler lidar (DL) is an active remote sensing instrument that provides range- and time-resolved measurements of radial velocity and attenuated backscatter. The principle of operation is similar to radar in that pulses of energy are transmitted into the atmosphere; the energy scattered back to the transceiver is collected and measured as a time-resolved signal. From the time delay between each outgoing transmitted pulse and the backscattered signal, the distance to the scatterer is inferred. The radial or line-of-sight velocity of the scatterers is determined from the Doppler frequency shift of the backscattered radiation. The DL uses a heterodyne detection technique in which the return signal is mixed with a reference laser beam (i.e., local oscillator) of known frequency. An onboard signal processing computer then determines the Doppler frequency shift from the spectra of the heterodyne signal. The energy content of the Doppler spectra can also be used to determine attenuated backscatter.

Newsom, RK

2012-02-13T23:59:59.000Z

4

Experimental deformation of natural and synthetic dolomite  

E-Print Network (OSTI)

Natural and hot isostatically pressed dolomite aggregates were experimentally deformed at effective pressures of Pe = 50 ?? 400 MPa, temperatures of 400 ?? 850??C, and strain rates of ?& = 1.2x10-4 s-1 to 1.2x10-7 s-1. Coarse- and fine-grained dolomite deformed at low temperature (T ? 700??C for coarse-grained natural dolomite, T < 700??C for fine-grained natural and synthetic dolomite) exhibit mechanical behavior that is nearly plastic; differential stresses are insensitive to strain rate, fitted either by a power law no?????????=??????31&& with n values that range from 12 to 49 or an exponential law ([31exp )] ??????=o&& with exponential law term ? values from 0.023 to 0.079 MPa-1. Microstructures of samples deformed at low temperatures include mechanical twins, and undulatory extinction suggesting that twin glide and dislocation slip are the predominant deformation mechanisms. At high temperatures (T ? 800??C) flow strengths of coarse- and fine-grained dolomite depend more strongly on strain-rate and exhibit pronounced temperature dependencies. Microstructures of coarse-grained dolomite samples deformed at T ? 800??C include undulatory extinction and fine recrystallized grains suggesting that recovery and dynamic recrystallization contribute to dislocation creep at these conditions. By comparison with lower temperature deformation, mechanical twinning is unimportant. Fine-grained synthetic dolomite deformed at high temperature (T ? 700??C) exhibits nearly linear (Newtonian) viscous behavior, with n = 1.28 (??0.15) consistent with grain boundary (Coble) diffusion creep. At low temperatures (T ? 700??C) coarse-grained dolomite exhibits higher strengths at higher temperatures which cannot be described by an Arrhenius relation, while fine-grained dolomite strengths show little or no temperature dependence. At high temperatures (T ? 800??C), dislocation creep of coarse-grained dolomite can be described by a thermally activated power law ??????????????????=RTHno*31exp??????&& with H*/n = 60 kJ/mol, or by an exponential law ()[]??????????=RTHo*31expexp?????&& with H*/? = 25447 kJ/mol. At high temperatures, diffusion creep of fine-grained synthetic dolomite can be described by ?????????????????????????=RTHdno*313exp??????&& with H* = 280 ??45 kJ/mol. Taken together, the flow laws for coarse- and fine-grained dolomites constrain the high temperature conditions over which crystal plasticity, dislocation creep, and diffusion creep dominate.

Davis, Nathan Ernest

2005-08-01T23:59:59.000Z

5

DL-36361 UC-414 I  

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

DL-36361 DL-36361 UC-414 I * Discovery of the Most Distant Supernovae and the Quest for L l Gerson Goldhaber and Saul Perlmutter Lawrence Berkeley Laboratory and Center for Particle Astrophysics University of California, Berkeley, CA 94720 Silvia Gabi, Ariel Goobar, Alex Kim, Mathew Kim, and Reynald Pain Lawrence Berkeley Laboratory, University of California Berkeley, CA 94720 Carl Pennypacker and Ivan Small Lawrence Berkeley Laboratory and Space Sciences Laboratory University of California, Berkeley, CA 94720 Brian Boyle, Richard Ellis, and Richard McMahon Institute of Astronomy, Cambridge, United Kingdom and Peter Bunclarlc, Dave Carter, and Roberto Terlevich Royal Greenwich Observatory, Cambridge, United Kingdom May 1994 T h i s work w a s supported in part by the U.S. Department of Energy under Contract No. DE-AC03-76SF00098,

6

DL_POLY Molecular Simulation Package  

Science Conference Proceedings (OSTI)

Jan 8, 2008 ... DL_POLY is a general purpose serial and parallel molecular dynamics simulation package developed at Daresbury Laboratory by W. Smith,...

7

Data repair of inconsistent DL-programs  

Science Conference Proceedings (OSTI)

Nonmonotonic Description Logic (DL) programs support rule-based reasoning on top of Description Logic ontologies, using a well-defined query interface. However, the interaction of the rules and the ontology may cause inconsistency such that no answer ...

Thomas Eiter, Michael Fink, Daria Stepanova

2013-08-01T23:59:59.000Z

8

Compression wave studies in Blair dolomite  

DOE Green Energy (OSTI)

Dynamic compression wave studies have been conducted on Blair dolomite in the stress range of 0-7.0 GPa. Impact techniques were used to generate stress impulse input functions, and diffuse surface laser interferometry provided the dynamic instrumentation. Experimental particle velocity profiles obtained by this method were coupled with the conservation laws of mass and momentum to determine the stress-strain and stress-modulus constitutive properties of the material. Comparison between dynamic and quasistatic uniaxial stress-strain curves uncovered significant differences. Energy dissipated in a complete load and unload cycle differed by almost an order of magnitude and the longitudinal moduli differed by as much as a factor of two. Blair dolomite was observed to yield under dynamic loading at 2.5 GPa. Below 2.5 GPa the loading waves had a finite risetime and exhibited steady propagation. A finite linear viscoelastic constitutive model satisfactorily predicted the observed wave propagation. We speculate that dynamic properties of preexisting cracks provides a physical mechanism for both the rate dependent steady wave behavior and the difference between dynamic and quasistatic response.

Grady, D.E.; Hollenbach, R.E.; Schuler, K.W.; Callender, J.F.

1976-02-01T23:59:59.000Z

9

Dolomite III: A new candidate lower mantle carbonate  

Science Conference Proceedings (OSTI)

Dolomite is a major constituent of subducted carbonates; therefore evaluation of its phase stability and equation of state at high pressures and temperatures is important for understanding the deep Earth carbon cycle. X-ray diffraction experiments in the diamond anvil cell show that Ca{sub 0.988}Mg{sub 0.918}Fe{sub 0.078}Mn{sub 0.016}(CO{sub 3}){sub 2} dolomite transforms to dolomite-II at {approx}17 GPa and 300 K and then upon laser-heating transforms to a new monoclinic phase (dolomite-III), that is observed between 36 and 83 GPa. Both high-pressure polymorphs are stable up to 1500 K, indicating that addition of minor Fe stabilizes dolomite to Earth's deep-mantle conditions.

Mao, Zhu; Armentrout, Matt; Rainey, Emma; Manning, Craig E.; Dera, Przemyslaw; Prakapenka, Vitali B.; Kavner, Abby (UCLA); (UC)

2012-05-10T23:59:59.000Z

10

Sulfation reactions of limestone/dolomite and Nahcolite/Trona  

SciTech Connect

Sulfation rate measurements for both calcined limestone/dolomite and Nahcolite/Trona have been found to conform to the exponentially decaying expression r = r{sub o}e{sup {minus}ax} where r{sub o} is the initial rate of reaction and x is the extent of conversion of the solid sorbents. For limestone/dolomite, the above rate expression is valid for the early part of the sulfation process while for Nahcolite/Trona, the expression can be applied to the entire sulfation process. The initial rate was found to follow the Arrhenius expression and is proportional to the concentration of SO{sub 2}. The decay parameter, a, obtained for both limestone and dolomite related to the SO{sub 2} concentration and exponentially to the square root of the absolute reaction temperature. The sorptive capacity of limestone/dolomite was correlated to chemical composition and pore size distribution. Reactivities of Nahcolite/Trona were found to be one to two orders of magnitude greater than that of limestone and dolomite and the rate of decay versus conversion was much less significant.

Chang, E.Y.Y.

1988-01-01T23:59:59.000Z

11

Dolomitization and dedolomitization models in a fractured reservoir, Reed City oil field, Michigan  

Science Conference Proceedings (OSTI)

Hydrocarbon production in the Michigan basin is essentially from pinnacle reefs or fractured reservoirs. The epigenetically formed porous dolomite reservoir rock is intimately related to the shear faults (channelways for rising high Mg/Ca ratio fluids) and to the resulting shear folds, the latter showing dolomite/calcite ratios increasing generally from outer closure to the fold axes. The Reed City field (anticline) of western Michigan represents a dramatic exception to this picture with the dolomite/calcite ratio increasing from outer closure to maximum part way up the limbs then decreasing to the axis. This lowest zone is the only unit not dedolomitized, a fact perhaps commensurate with its low stratigraphic position at the bottom of (and apparently beyond the reach of) the descending high-calcium, low-magnesium waters what brought about the dedolomitization. The dedolomitization model would call for a shallow water to exposed oxidizing environment, possible with the position of this area astride the West Michigan Barrier that separates a lagoonal facies from a more open sea facies to the east. Thus, waters with a high Ca/Mg ratio passed down the same shear faults that earlier were channelways for the rising high Mg/Ca ratio waters. On the bases of isopach, structure and dolomite/calcite (Isodol) maps, one can piece together a reasonably chronological sequence of pre-Dundee shear faulting and folding, post-Traverse upward migration of dolomitizing fluids, upward migration of hydrocarbons along the shear faults, downward-moving dedolomitizing fluids, and a later episode of faulting (especially shear cross-faults).

Carlton, R.R.; Prouty, C.E.

1983-03-01T23:59:59.000Z

12

Modified Murnaghan equation of state applied to shock compression of silica, basalt, and dolomite  

DOE Green Energy (OSTI)

An equation of state previously used by the author is developed further and applied to geologic media. The equation is of the same form as the Murnaghan equation of state, but with the elastic constant terms replaced by the cohesive energy density (internal pressure), and the exponential term given as a sum of the Gruneisen parameter and the gaseous adiabatic exponent. Data for shock compression of silica, basalt, and dolomite are analyzed according to the equation.

Rogers, L.A.

1965-12-20T23:59:59.000Z

13

DOE/SC-ARM-13-003 ARM Lead Mentor Selection Process DL Sisterson  

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

3 ARM Lead Mentor Selection Process DL Sisterson March 2013 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States...

14

acid  

Office of Legacy Management (LM)

Acid/Pueblo Canyon, New Mexico, Site is Acid/Pueblo Canyon, New Mexico, Site is located near the town of Los Alamos, New Mexico, approximately 25 miles northwest of Santa Fe and 60 miles north-northeast of Albuquerque. The site is accessible from Canyon Road, which runs just south of the former waste treatment plant. The plant was situated on a mesa that forms the south rim of Acid Canyon. Acid Canyon is a small tributary near the head

15

Interpretations of Tracer Tests Performed in the Culebra Dolomite at the Waste Isolation Pilot Plant Site  

SciTech Connect

This report provides (1) an overview of all tracer testing conducted in the Culebra Dolomite Member of the Rustler Formation at the Waste Isolation Pilot Plant (WPP) site, (2) a detailed description of the important information about the 1995-96 tracer tests and the current interpretations of the data, and (3) a summary of the knowledge gained to date through tracer testing in the Culebra. Tracer tests have been used to identify transport processes occurring within the Culebra and quantify relevant parameters for use in performance assessment of the WIPP. The data, especially those from the tests performed in 1995-96, provide valuable insight into transport processes within the Culebra. Interpretations of the tracer tests in combination with geologic information, hydraulic-test information, and laboratory studies have resulted in a greatly improved conceptual model of transport processes within the Culebra. At locations where the transmissivity of the Culebra is low (< 4 x 10{sup -6} m{sup 2}/s), we conceptualize the Culebra as a single-porosity medium in which advection occurs largely through the primary porosity of the dolomite matrix. At locations where the transmissivity of the Culebra is high (> 4 x 10{sup -6} m{sup 2}/s), we conceptualize the Culebra as a heterogeneous, layered, fractured medium in which advection occurs largely through fractures and solutes diffuse between fractures and matrix at multiple rates. The variations in diffusion rate can be attributed to both variations in fracture spacing (or the spacing of advective pathways) and matrix heterogeneity. Flow and transport appear to be concentrated in the lower Culebra. At all locations, diffusion is the dominant transport process in the portions of the matrix that tracer does not access by flow.

MEIGS,LUCY C.; BEAUHEIM,RICHARD L.; JONES,TOYA L.

2000-08-01T23:59:59.000Z

16

acid  

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

Acid/Pueblo Canyon, New Mexico, Site. Acid/Pueblo Canyon, New Mexico, Site. This site is managed by the U.S. Department of Energy Office of Legacy Management. Site Description and History The Acid/Pueblo Canyon, New Mexico, Site is located near the town of Los Alamos, New Mexico, approximately 25 miles northwest of Santa Fe and 60 miles north-northeast of Albuquerque. The site is accessible from Canyon Road, which runs just south

17

u.s. Dl1PARUIFNT OF ENERGY EERE PROJECT MAN AGEMENT CENTER NEPA DETERMINATION  

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

Dl1PARUIFNT OF ENERGY Dl1PARUIFNT OF ENERGY EERE PROJECT MAN AGEMENT CENTER NEPA DETERMINATION Page I of2 STATE: TX RECIPIENT:E1 Paso, TX PROJECT PV Solar Demonstration Project ARRA-EECBG-City of EI Paso, TX TITLE: Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FOA-OOOOO13 DE-EEOOOO964 GFQ-0000964-OO3 G0964 Based on my review orlhe information concerning the proposed action, as NEPA Compliance Officer (authoriJ'£d under DOE Order 451.IA), I have made the rollowing determination: ex, EA, EIS APPENDIX AND NUMBER: Description: 85.16 Solar photovoltalc systems The installation, modification, operation, and removal of commercially available solar pholovoltaic systems located on a building or other structure (such as rooftop, parking lot or facility, and mounted to

18

Interpretations of Tracer Tests Performed in the Culebra Dolomite at the Waste Isolation Pilot Plant Site  

Science Conference Proceedings (OSTI)

This report provides (1) an overview of all tracer testing conducted in the Culebra Dolomite Member of the Rustler Formation at the Waste Isolation Pilot Plant (WPP) site, (2) a detailed description of the important information about the 1995-96 tracer tests and the current interpretations of the data, and (3) a summary of the knowledge gained to date through tracer testing in the Culebra. Tracer tests have been used to identify transport processes occurring within the Culebra and quantify relevant parameters for use in performance assessment of the WIPP. The data, especially those from the tests performed in 1995-96, provide valuable insight into transport processes within the Culebra. Interpretations of the tracer tests in combination with geologic information, hydraulic-test information, and laboratory studies have resulted in a greatly improved conceptual model of transport processes within the Culebra. At locations where the transmissivity of the Culebra is low ( 4 x 10{sup -6} m{sup 2}/s), we conceptualize the Culebra as a heterogeneous, layered, fractured medium in which advection occurs largely through fractures and solutes diffuse between fractures and matrix at multiple rates. The variations in diffusion rate can be attributed to both variations in fracture spacing (or the spacing of advective pathways) and matrix heterogeneity. Flow and transport appear to be concentrated in the lower Culebra. At all locations, diffusion is the dominant transport process in the portions of the matrix that tracer does not access by flow.

MEIGS,LUCY C.; BEAUHEIM,RICHARD L.; JONES,TOYA L.

2000-08-01T23:59:59.000Z

19

Laboratory column experiments for radionuclide adsorption studies of the Culebra dolomite member of the Rustler Formation  

SciTech Connect

Radionuclide transport experiments were carried out using intact cores obtained from the Culebra member of the Rustler Formation inside the Waste Isolation Pilot Plant, Air Intake Shaft. Twenty-seven separate tests are reported here and include experiments with {sup 3}H, {sup 22}Na, {sup 241}Am, {sup 239}Np, {sup 228}Th, {sup 232}U and {sup 241}Pu, and two brine types, AIS and ERDA 6. The {sup 3}H was bound as water and provides a measure of advection, dispersion, and water self-diffusion. The other tracers were injected as dissolved ions at concentrations below solubility limits, except for americium. The objective of the intact rock column flow experiments is to demonstrate and quantify transport retardation coefficients, (R) for the actinides Pu, Am, U, Th and Np, in intact core samples of the Culebra Dolomite. The measured R values are used to estimate partition coefficients, (kd) for the solute species. Those kd values may be compared to values obtained from empirical and mechanistic adsorption batch experiments, to provide predictions of actinide retardation in the Culebra. Three parameters that may influence actinide R values were varied in the experiments; core, brine and flow rate. Testing five separate core samples from four different core borings provided an indication of sample variability. While most testing was performed with Culebra brine, limited tests were carried out with a Salado brine to evaluate the effect of intrusion of those lower waters. Varying flow rate provided an indication of rate dependent solute interactions such as sorption kinetics.

Lucero, D.A.; Heath, C.E. [Sandia National Labs., Albuquerque, NM (United States); Brown, G.O. [Oklahoma State Univ., Stillwater, OK (United States). Biosystems and Agricultural Engineering Dept.

1998-04-01T23:59:59.000Z

20

x?? =J*A**?w7?DL??FADm*?!,*?Kha V*x**+1? ...  

Science Conference Proceedings (OSTI)

x???=J*A**?w7?DL??FADm*?!,*?Kha V*x**+1?*?C??6M*? ?o~֥e?/*??a?*9?*u????? ?^??I;)N. ...

2013-05-13T23:59:59.000Z

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


21

U.S. Dl1PARl'MENT OF ENERGY EERE PROJECT MAN AG EMENT CENTER  

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

r-.u..~ r-.u..~ , U.S. Dl1PARl'MENT OF ENERGY EERE PROJECT MAN AG EMENT CENTER NEPA DEl'ElU.,nNAl'ION RECIPIENT:WA Dept. of Commerce PROJECT TITLE: Washington State Ferries Biodiesel Project· Phase II Page 1 of3 STATE: WA Funding Opportunity Announcement Number ProcuR'mentlnstrument Number NEPA Control Number em Number DE-FOA-OOOOO52 EEOOOO139 GF0-0000139-039 EE139 Based on my review orlhe Information concerning the propostd action, as NEPA Compliance Officer (authorized under DOE Order 45I.1A), I have made tbe rollowing determination: ex, EA, EIS APPENDIX AND NUMBER: Description: B5.22 Alternative fuel vehicle fueling stations The installation, modification, operation, and removal of alternative fuel vehicle fueling stations (such as for compressed

22

ANALYTICAL DATA SHEET ANALYTICAL DEPT. - HEALTH Al\rD SAFETY DlVlSlON  

Office of Legacy Management (LM)

em IVIL, u-3 em IVIL, u-3 1' 1L, I -' I ANALYTICAL DATA SHEET ANALYTICAL DEPT. - HEALTH Al\rD SAFETY DlVlSlON 1956 1. H.# fL22 Industrial Hygiene or Medical Dept. Sample Nor& 3 Date Collected- 5117 by --Route to CES CES r Location IQJKER-PEMJNS Co- Type of Sample-waternalyzed for F Alpha Remarks -&I GG -- u - Beta Samples of water discharged to river during Steam clean- No, Ra ing of equipment. Oil PH Be Th Sample No. Hour Sample Description (RT Please analyze for gm/U/gal. BP-1 P- RO-Kneader BP-2 K- N-Kneader BP-3 Omera Feeder - __-- .___ -- i ___- ------I - 1 I . ----.--- - ------ .-___ _- I I - 3" - 1 ' : i ' Nt! w-d Analytical Chemistry Section: - Date Received 5-21-56 bY %b. Date Reported 5-2 Z-56 by&b. Method of Analysis Fluorimeter

23

EERE PROJECT MANAGEMENT CDITER Nl!PA Dl!Tl!Rl\llNATION  

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

... ... ~ . u.s DEPAR lENT OFl!NERG' EERE PROJECT MANAGEMENT CDITER Nl!PA Dl!Tl!Rl\llNATION Page 1 of2 RECIPIENT:Stanford University STATE: CA PROJECf TITLE: In·Situ X·Ray Analysis of Rapid Thermal Processing for Thin·FiI Solar Cells: Closing the Gap between Production and Laboratory Efficiency Funding Opportunity Announcement Number DE·FOA-0000654 Procurement Instrument Number DE·EE0005951 NEPA Control Number em Number GFQ-0005951·001 G05951 Based on my review of the information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 4SI.IA), I have made the following determination: CX, EA, EIS APP~:NDIX AND NUMBER: Description: A9 Information gathering, analysis, and dissemination 81.31 Installation or

24

Dl!PARThlENT OF ENERGY EERE PROJECT \1A~AGEMENT CENTER  

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

~"'-'~' ~"'-'~' u.s. Dl!PARThlENT OF ENERGY EERE PROJECT \1A~AGEMENT CENTER NEPA DETEIU.llNATION Page 1 of2 REel PIENT:County of Somerset STATE: NJ PROJECT TITl.E : Somerset County Renewable Energy Initiative Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-EEOOO3199 GFOOOO3199-001 G03199 BaSC'd on my review o!tbe information concerning the proposed action, as NEPA Compliance Officrr (authorized under DOE Order 451.1A), I have made the following detenninatioo: ex, EA, [IS APPENDIX AND NUMBER: Description: 85.16 Solar photovoltaic systems The installation, modification , operation, and removal of commercially available solar photoyoltaic systems located on a building or other structure (such as rooftop. parking lot Of facility

25

Molecular dynamics in a grid computing environment: experiences using DL_POLY_3 within the eMinerals escience  

E-Print Network (OSTI)

Molecular dynamics in a grid computing environment: experiences using DL_POLY_3 within the e how molecular-scale simulations can be performed using grid computing. The potential for running many gained by the UK eMinerals project [1] in developing grid computing methods for molecular simulations

Cambridge, University of

26

ANALYTICAL DATA SHEET ANALYTICAL DEPT. - HEALTH AhD SAFETY DlVlSlDN  

Office of Legacy Management (LM)

ANALYTICAL DEPT. - HEALTH AhD SAFETY DlVlSlDN I -. . Industrial Hygiene or Medical Dept. 1956 I. H.# 984 Sample Nos. l2 Date Collected- o/2g by&- Route to J" Location SSi4.X CUiTn! CXJitP. Type of Sample&-dust Analyzed for F Alpha x Remarks P~UXC~JGIi.' ON. 14lCI11~ U Beta - IIoll0Wi.n~ slucs - NO, Ra Oil PH Be Th Sample No. 7573p Hour Sample Description 1355 CZ Orxxator sets slul: into place, closes shield over machine S starts &ill. oil coolant flows through hollow drill ____ 3 is rebounded back through an openiq covers 1 cor.lp N9 8775 Analytical Chemistry Section: Date Received 7-2-66 by hb Date Reported 74X& bY IIR Method of Analysis Alpha sdntillation cam 2 % ' CJly Counting Data: BKGD .27 c/min GE0 4o% /min 1 I c- d/ill/M 3

27

DEPXRTMEKT OF ENV]RO~:MENTAL F'ROTECTION DlVklOh OF  

Office of Legacy Management (LM)

. * . * @.+<, .-- v 7, -e -5 u i' ;. - - : ,.:,, 4-.1M-4. a". : ' - l-1 &dp d 3-m 3jPr5Py DEPXRTMEKT OF ENV]RO~:MENTAL F'ROTECTION DlVklOh OF ~NVIR0N~Eh~A.L OUR' tiIn - . BUREAU OF R&DllmcN t=ROTE~lOH ' 1 ,_ jBD 5cOTCH ROAD. ~R~%~obi. fd. 1. 08628 .' - ._ -_ _ . . : S=_srterrjer 27, 1977 - ,. _ :.- ,_..I \ L . x=- a-. JEC): f' eust C--l L-9 ,c:c- -*r 2ze E&f&y _3=iz=Et=g cr;i\' ==Siq ' ---res"LE;, c2iiIps - de- ~-z7~~to3, Bew --d Jersey DE540 3ez' -- . w- Tecsk: i 25, 1577, A&=!= --t' -jD,r= of

28

DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER N1!PA Dl!1'ElU.llNATION  

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

N1!PA Dl!1'ElU.llNATION N1!PA Dl!1'ElU.llNATION RECIPIENT:City of Perth Amboy PROJECT TITLE : Municipal Complex Solar Power Project Page 1 of2 STATE: NJ Funding Opportunity Announl::ement Number Procurement Instrument Number NEPA Control Number elD Number Congressionally Directed Project DE· EEOOO3172 GF0-0003172..Q01 EE3172 Based on my review of the information concerning the proposed action, as N[PA Compliance Officer (authoro.ed under DOE Order451.1A),1 have made tbe following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: 8 5.1 Adions to oonserve energy, demonstrate potential energy conservation, and promote energy-efficiency that do not increase the indoor concentratIOns of potentially harmful substances. These actions may involve financial and technical

29

Establishing the Relationship between Fracture-Related Dolomite and Primary Rock Fabric on the Distribution of Reservoirs in the Michigan Basin  

SciTech Connect

This topical report covers the year 2 of the subject 3-year grant, evaluating the relationship between fracture-related dolomite and dolomite constrained by primary rock fabric in the 3 most prolific reservoir intervals in the Michigan Basin (Ordovician Trenton-Black River Formations; Silurian Niagara Group; and the Devonian Dundee Formation). The characterization of select dolomite reservoirs has been the major focus of our efforts in Phase II/Year 2. Fields have been prioritized based upon the availability of rock data for interpretation of depositional environments, fracture density and distribution as well as thin section, geochemical, and petrophysical analyses. Structural mapping and log analysis in the Dundee (Devonian) and Trenton/Black River (Ordovician) suggest a close spatial relationship among gross dolomite distribution and regional-scale, wrench fault related NW-SE and NE-SW structural trends. A high temperature origin for much of the dolomite in the 3 studied intervals (based upon initial fluid inclusion homogenization temperatures and stable isotopic analyses,) coupled with persistent association of this dolomite in reservoirs coincident with wrench fault-related features, is strong evidence for these reservoirs being influenced by hydrothermal dolomitization. For the Niagaran (Silurian), a comprehensive high resolution sequence stratigraphic framework has been developed for a pinnacle reef in the northern reef trend where we had 100% core coverage throughout the reef section. Major findings to date are that facies types, when analyzed at a detailed level, have direct links to reservoir porosity and permeability in these dolomites. This pattern is consistent with our original hypothesis of primary facies control on dolomitization and resulting reservoir quality at some level. The identification of distinct and predictable vertical stacking patterns within a hierarchical sequence and cycle framework provides a high degree of confidence at this point that results will be exportable throughout the basin. Ten petrophysically significant facies have been described in the northern reef trend, providing significantly more resolution than the standard 4-6 that are used most often in the basin (e.g. Gill, 1977). Initial petrophysical characterization (sonic velocity analysis under confining pressures) shows a clear pattern that is dependent upon facies and resulting pore architecture. Primary facies is a key factor in the ultimate diagenetic modification of the rock and the resulting pore architecture. Facies with good porosity and permeability clearly show relatively slow velocity values as would be expected, and low porosity and permeability samples exhibit fast sonic velocity values, again as expected. What is significant is that some facies that have high porosity values, either measured directly or from wireline logs, also have very fast sonic velocity values. This is due to these facies having a pore architecture characterized by more localized pores (vugs, molds or fractures) that are not in communication.

G. Michael Grammer

2006-09-30T23:59:59.000Z

30

Summary of Research through Phase II/Year 2 of Initially Approved 3 Phase/3 Year Project - Establishing the Relationship between Fracture-Related Dolomite and Primary Rock Fabric on the Distribution of Reservoirs in the Michigan Basin  

SciTech Connect

This final scientific/technical report covers the first 2 years (Phases I and II of an originally planned 3 Year/3 Phase program). The project was focused on evaluating the relationship between fracture-related dolomite and dolomite constrained by primary rock fabric in the 3 most prolific reservoir intervals in the Michigan Basin. The characterization of select dolomite reservoirs was the major focus of our efforts in Phases I and II of the project. Structural mapping and log analysis in the Dundee (Devonian) and Trenton/Black River (Ordovician) suggest a close spatial relationship among gross dolomite distribution and regional-scale, wrench fault-related NW-SE and NE-SW structural trends. A high temperature origin for much of the dolomite in these 2 studied intervals (based upon fluid inclusion homogenization temperatures and stable isotopic analyses,) coupled with persistent association of this dolomite in reservoirs coincident with wrench fault-related features, is strong evidence for these reservoirs being influenced by hydrothermal dolomitization. In the Niagaran (Silurian), there is a general trend of increasing dolomitization shelfward, with limestone predominant in more basinward positions. A major finding is that facies types, when analyzed at a detailed level, are directly related to reservoir porosity and permeability in these dolomites which increases the predictability of reservoir quality in these units. This pattern is consistent with our original hypothesis of primary facies control on dolomitization and resulting reservoir quality at some level. The identification of distinct and predictable vertical stacking patterns within a hierarchical sequence and cycle framework provides a high degree of confidence at this point that the results should be exportable throughout the basin. Much of the data synthesis and modeling for the project was scheduled to be part of Year 3/Phase III, but the discontinuation of funding after Year 2 precluded those efforts. Therefore, the results presented in this document are not final, and in many cases represent a report of 'progress to date' as numerous tasks were scheduled to extend into Year 3.

G. Grammer

2007-09-30T23:59:59.000Z

31

U.S. DEPARTIl1ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA Dl!TFR1ITNATION  

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

ENT OF ENERGY ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA Dl!TFR1ITNATION RECIPIENT:Colorado School of Mines Page 1 on STATE: CO PROJECT TITLE: Time-lapse Joint Inversion of GEOphysical Data and its Application to Geothermal Prospecting GEODE Funding Opportunity Announcement Number DOE DE-FOA-OOOO522 Procurement Instrument Number OE-EEOOO5513 NEPA Control Number em Number GFO-o005513-Q01 0 Based on my review ofthe information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 451.IA), 1 have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: A9 1nformation ga thering, a nalysis, a nd d issem ination Information gathering (including, but not limited to, literature surveys, inventories, site visils, and audits), data analysis

32

PMC·Fr.. U.S. Dl?PARThIENT OFFNFRGY EERE PROJECT MANAGEMENT CE~TER  

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

Fr.. Fr.. U.S. Dl?PARThIENT OFFNFRGY EERE PROJECT MANAGEMENT CE~TER Nl!PA DF=llNATION RECIPIENT:Oregon Stale University-NNMREC PROJECT TITLE : Pacific Marine Energy Center FY2012 Funding Page 1 of3 STATE: OR Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number G098030 DE-FG36-08GOI8179 GFO-GOI8179-004 G018179 Based on my review of the information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 451. 1A), I have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: A9 Inform ation gathering, analys is, and disseminatlon A1 1 Technical advice and assistance to organizations Information gathering (including, but not limited to, literature surveys, inventories, site visits, and

33

RECIPIENT:QDOE U.S. Dl1PARTlIIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER  

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

QDOE QDOE U.S. Dl1PARTlIIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER Nl!PA DETERMINATION Page 1 of2 STATE: OR PROJECT TITL.E : SEP ARRA - Deployment of Innovative Energy Efficiency and Renewable Energy - Agriculture - Dufur & HanncrCantrell Funding Opportunity Announcement Number Pro<:uremeniinstruml.'nt Number NEPA Control Number elD Number OE-FOA-OOOOOS2 EEOOOO140 GF0-0000140-001 EE140 Based on my review of the Information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 4SUA), I have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: De~cription: 85.1 Actions to conserve energy. demonstrate potential energy oonservalion, and promote energy-efficiency that do not increase the indoor concentrations o

34

DEPARThIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA Dl!1'FIt1.fiNATION  

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

DEPARThIENT OF ENERGY DEPARThIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA Dl!1'FIt1.fiNATION RECIPIENT:Biomass Energy Resource Center PROJECf TITLE: Biomass Energy Resource Center - Core and Program Support Page 1 of2 STATE: VT Funding Opportunity Annoum:emenl Number Procu~ment Instrument Number NEPA Control Number CID Number COP DE-FG36-06G086103,AOO4 GFO-G086103-003 0 Based on my review oflhl' information concerning the proposed action, as NEPA Compliance Officer (aulhoru.ed under DOE Order 451.1A), I bne made the following determination: ex, EA, EIS APPF..NDIX AND NUMBER: Description: A9 Information gathering (including, but not limited 10, literature surveys, inventories, audits), data analysis (including computer modeling), document preparation (such as conceptual design or feasibility studies, analytical energy supply and

35

ARM - Instrument - dl  

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

PGH M1 Browse Data ARIES Observatory, Nainital, Uttarkhand, India PVC M1 Browse Data Highland Center, Cape Cod MA; AMF 1 Contact(s) Rob Newsom (509) 372-6020 rob.newsom@pnnl...

36

DL Visualize - TMS  

Science Conference Proceedings (OSTI)

Jan 8, 2008 ... The code also provides a simple method of generating LEED patterns from complex surfaces and can provide both single domain and multiple...

37

Phase I (Year 1) Summary of Research--Establishing the Relationship between Fracture-Related Dolomite and Primary Rock Fabric on the Distribution of Reservoirs in the Michigan Basin  

Science Conference Proceedings (OSTI)

This topical report covers the first 12 months of the subject 3-year grant, evaluating the relationship between fracture-related dolomite and dolomite constrained by primary rock fabric in the 3 most prolific reservoir intervals in the Michigan Basin (Ordovician Trenton-Black River Formations; Silurian Niagara Group; and the Devonian Dundee Formation). Phase I tasks, including Developing a Reservoir Catalog for selected dolomite reservoirs in the Michigan Basin, Characterization of Dolomite Reservoirs in Representative Fields and Technology Transfer have all been initiated and progress is consistent with our original scheduling. The development of a reservoir catalog for the 3 subject formations in the Michigan Basin has been a primary focus of our efforts during Phase I. As part of this effort, we currently have scanned some 13,000 wireline logs, and compiled in excess of 940 key references and 275 reprints that cover reservoir aspects of the 3 intervals in the Michigan Basin. A summary evaluation of the data in these publications is currently ongoing, with the Silurian Niagara Group being handled as a first priority. In addition, full production and reservoir parameter data bases obtained from available data sources have been developed for the 3 intervals in Excel and Microsoft Access data bases. We currently have an excess of 25 million cells of data for wells in the Basin. All Task 2 objectives are on time and on target for Phase I per our original proposal. Our mapping efforts to date, which have focused in large part on the Devonian Dundee Formation, have important implications for both new exploration plays and improved enhanced recovery methods in the Dundee ''play'' in Michigan--i.e. the interpreted fracture-related dolomitization control on the distribution of hydrocarbon reservoirs. In an exploration context, high-resolution structure mapping using quality-controlled well data should provide leads to convergence zones of fault/fracture trends that are not necessarily related to structural elevation. Further work in Phase II will be focused on delineating the relative contribution to fracture-only dolomitization to that which occurs in conjunction with primary facies and/or sequence stratigraphic framework.

G. Michael Grammer

2005-11-09T23:59:59.000Z

38

U.S. DI!PARThlENT OF ENERGY EERE PROJECT MANAGEMENT CENTER Nl!PA Dl1TImfiNATION  

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

PARThlENT OF ENERGY PARThlENT OF ENERGY EERE PROJECT MANAGEMENT CENTER Nl!PA Dl1TImfiNATION RECIPIENT: BeIi Geospace, Inc Page 1 of2 STATE: TX PROJECT TITLE: Geothermal Technology Advancement for Rapid Development of Resources in the U.S. Funding OpportunUy Announcement Number Procurement Instrument Number NEPA Control Number em Number DE·FQA'()()()()S22 OE-EEOOO5515 GF0-0005515-001 G05515 Bued on my review oftbe information concerning the proposro action, as NEPA Compliance Officer (authorized under DOE Ordtr 4SI.IA), I have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: Description : A9 Information gathering, analysis, and dissemination Information gathering (induding, but not limited to, literature surveys, inventories, site visits. and audits), data analysis

39

FURNACE INJECTION OF ALKALINE SORBENTS FOR SULFURIC ACID REMOVAL  

Science Conference Proceedings (OSTI)

The objective of this project has been to demonstrate the use of alkaline reagents injected into the furnace of coal-fired boilers as a means of controlling sulfuric acid emissions. The project was co-funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-99FT40718, along with EPRI, the American Electric Power Company (AEP), FirstEnergy Corporation, the Tennessee Valley Authority, and Carmeuse North America. Sulfuric acid controls are becoming of increased interest for coal-fired power generating units for a number of reasons. In particular, sulfuric acid can cause plant operation problems such as air heater plugging and fouling, back-end corrosion, and plume opacity. These issues will likely be exacerbated with the retrofit of selective catalytic reduction (SCR) for NOX control, as SCR catalysts are known to further oxidize a portion of the flue gas SO{sub 2} to SO{sub 3}. The project tested the effectiveness of furnace injection of four different magnesium-based or dolomitic alkaline sorbents on full-scale utility boilers. These reagents were tested during one- to two-week tests conducted on two FirstEnergy Bruce Mansfield Plant (BMP) units. One of the sorbents tested was a magnesium hydroxide slurry byproduct from a modified Thiosorbic{reg_sign} Lime wet flue gas desulfurization process. The other three sorbents are available commercially and include dolomite, pressure-hydrated dolomitic lime, and commercially available magnesium hydroxide. The dolomite reagent was injected as a dry powder through out-of-service burners. The other three reagents were injected as slurries through air-atomizing nozzles inserted through the front wall of the upper furnace. After completing the four one- to two-week tests, the most promising sorbents were selected for longer-term (approximately 25-day) full-scale tests on two different units. The longer-term tests were conducted to confirm sorbent effectiveness over extended operation on two different boilers, and to determine balance-of-plant impacts. The first long-term test was conducted on FirstEnergy's BMP Unit 3, and the second was conducted on AEP's Gavin Plant, Unit 1. The Gavin Plant test provided an opportunity to evaluate the effects of sorbent injected into the furnace on SO{sub 3} formed across an operating SCR reactor. A final task in the project was to compare projected costs for furnace injection of magnesium hydroxide slurries to estimated costs for other potential sulfuric acid control technologies. Estimates were developed for reagent and utility costs, and capital costs, for furnace injection of magnesium hydroxide slurries and seven other sulfuric acid control technologies. The estimates were based on retrofit application to a model coal-fired plant.

Gary M. Blythe

2004-01-01T23:59:59.000Z

40

High-level production of C-11-carboxyl-labeled amino acids. [For use in tumor and pancreatic imaging  

SciTech Connect

Carbon-11-labeled amino acids have significant potential as agents for positron tomographic functional imaging. We have developed a rapid, high-temperature, high-pressure modification of the Buecherer--Strecker amino acid synthesis and found it to be quite general for the production of C-11-carboxyl-labeled neutral amino acids. Production of C-11-carboxyl-labeled DL-tryptophan requires certain modifications in the procedure. Twelve different amino acids have been produced to date by this technique. Synthesis and chromatographic purification require approximately 40 min, and C-11-carboxyl-labeled amino acids have been produced in yields of up to 425 mCi. Two C-11-carboxyl-labeled amino acids are being investigated clinically for tumor scanning and two others for pancreatic imaging. Over 120 batches of the various agents have been produced for clinical use over a three-year period.

Washburn, L.C.; Sun, T.T.; Byrd, B.L.; Hayes, R.L.; Butler, T.A.; Callahan, A.P.

1979-01-01T23:59:59.000Z

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


41

TEAM0.5DL.doc  

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

0.5 0.5 Core Status: new users must complete 2 training sessions and pass a sample exchange exam to work independently during Core sessions (regular work hours). Flex Status: core users must complete 5 Core sessions and pass a driving test to work during Flex sessions (evening and weekend hours). All TEAM 0.5 scheduling must be coordinated through Peter Ercius at Percius@lbl.gov. You may be assigned only two sessions per month. CORE LICENSE Safety  Understand emergency shut-down procedure  Demonstrate handling of the column valves  Point out where emergency contact numbers are posted  Know how to contact NCEM staff for support Instrument preparation  Show how to check basic vacuum functionality and target pressure values  (Gun: 1, Liner: 18-20 and Octagon: < 10)

42

Microsoft Word - mitchell-dl.doc  

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

Characterizing Particle Size, Water Path and Photon Characterizing Particle Size, Water Path and Photon Tunneling in Ice and Water Clouds David L. Mitchell Atmospheric Sciences Division Desert Research Institute Reno, Nevada Robert P. d'Entremont Satellite Meteorology Group Atmospheric and Environmental Research, Inc. Lexington, Massachusetts Abstract Global information of ice water path (IWP) in ice clouds is urgently needed for testing of global climate models (GCMs) and other applications, but satellite retrievals of IWP are still in the developing stages, and tend to have large uncertainties (e.g. factor of 3 or more). Results of a new retrieval method are presented here that may have relatively low uncertainties, using several thermal-radiance channels. Recent research indicates that ice-cloud radiative properties depend on more than effective diameter

43

CM200DL-Final.doc  

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

CM200 CM200 Core Status: new users must complete 2 trouble free training sessions and pass the drivers test to work independently during Core sessions. Flex Status: core users must complete 5 trouble free sessions to work during Flex sessions. To reserve a CM200 session, go to www/ncem.lbl.gov, click on "Microscope Scheduling", use proposal number and password to log in. You may only sign up for one Core session at a time. To cancel a session, email your request to the technical staff in charge of the microscope. CORE LICENSE TEST Safety  Understand emergency shut down procedure  Know emergency contact numbers  Know where LN protective equipment is  Find updated operating instruction and notice (?) Instrument Preparation  Check V7 closed and SSC on and in cooling

44

Finding all justifications of OWL DL entailments  

Science Conference Proceedings (OSTI)

Finding the justifications of an entailment (that is, all the minimal set of axioms sufficient to produce an entailment) has emerged as a key inference service for the Web Ontology Language (OWL). Justifications are essential for debugging unsatisfiable ... Keywords: OWL ontology explanation, debugging, justifications

Aditya Kalyanpur; Bijan Parsia; Matthew Horridge; Evren Sirin

2007-11-01T23:59:59.000Z

45

Acrylic Acid from 3-Hydroxypropionic Acid - Energy Innovation ...  

Technology Marketing Summary. 3-hydroxypropionic acid is readily converted to acrylic acid by conversion to the acid salt followed by treatment with a solid oxide ...

46

PRODUCTION OF TRIFLUOROACETIC ACID  

DOE Patents (OSTI)

A method is given for the production of improved yields of trifluoroacetic acid. The compound is prepared by oxidizing m-aminobenzotrifluoride with an alkali metal or alkaline earth metal permanganate at a temperature in the range of 80 deg C to 100 deg C while dissolved ln a mixture of water with glacial acetic acid and/or trifluoroacetic acid. Preferably a mixture of water and trifluoroacetic acid ls used as the solvent.

Haworth, W.N.; Stacey, M.

1949-07-19T23:59:59.000Z

47

Nucleic acid detection compositions  

DOE Patents (OSTI)

The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

Prudent, James R. (Madison, WI); Hall, Jeff G. (Madison, WI); Lyamichev, Victor I. (Madison, WI); Brow, Mary Ann (Madison, WI); Dahlberg, James L. (Madison, WI)

2008-08-05T23:59:59.000Z

48

Process for the preparation of lactic acid and glyceric acid  

DOE Patents (OSTI)

Hexose and pentose monosaccharides are degraded to lactic acid and glyceric acid in an aqueous solution in the presence of an excess of a strongly anionic exchange resin, such as AMBERLITE IRN78 and AMBERLITE IRA400. The glyceric acid and lactic acid can be separated from the aqueous solution. Lactic acid and glyceric acid are staple articles of commerce.

Jackson, James E [Haslett, MI; Miller, Dennis J [Okemos, MI; Marincean, Simona [Dewitt, MI

2008-12-02T23:59:59.000Z

49

Effects of Glucocorticoid Receptor Small Interfering RNA Delivered Using Poly Lactic-Co-Glycolic Acid Microparticles  

E-Print Network (OSTI)

cells. FEBS Lett 22, 2869, 2006. 38. Coutu, D.L., Franc¸ois, M., and Galipeau, J. Inhibition of cellular

Salem, Aliasger K.

50

Controlling acid rain  

E-Print Network (OSTI)

High concentrations of sulfuric and nitric acid in raTn fn the northeastern USA are caused by the large scale combustion of fossil fuels within this region. Average precipitation acidity is pH 4.2, but spatial and temporal ...

Fay, James A.

1983-01-01T23:59:59.000Z

51

Synthesis of acid addition salt of delta-aminolevulinic acid ...  

A process of preparing an acid addition salt of delta-aminolevulinc acid comprising: a) dissolving a lower alkyl 5-bromolevulinate and hexamethylenetetramine in a ...

52

Recovery of Phosphoric Acid in Waste Acid Mixtures Discharged ...  

Science Conference Proceedings (OSTI)

Aug 1, 2003 ... In order to separate impurity acids from the phosphoric acid, trioctyl phosphate ( TOP) is used as an extractant. TOP can extract acetic and nitric...

53

Nucleic Acid Softwars  

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

Nucleic Acid Software Nucleic Acid Software FR3D, a software for finding local and composite recurrent structural motifs in RNA 3D structures. Sarver, M., Zirbel, C.L., Stombaugh, J., Mokdad, A. and Leontis, N.B. (2008) FR3D: finding local and composite recurrent structural motifs in RNA 3D structures. J Math Biol, 56, 215-252. RNAView, a program for quickly generating a display of RNA/DNA secondary structures with tertiary interactions. Yang, H., Jossinet, F., Leontis, N., Chen, L., Westbrook, J., Berman, H.M. and Westhof, E. (2003) Tools for the automatic identification and classification of RNA base pairs. Nucleic Acids Res, 31, 3450-3460. RNAMLview, a program to display and/or edit RNAView 2-dimensional diagrams. 3DNA, a software package for the analysis, rebuilding and visualization of three-dimensional nucleic acid structures.

54

Reactivity of Acid Generators  

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

Reactivity of Acid Generators for Chemically Amplified Resists with Reactivity of Acid Generators for Chemically Amplified Resists with Low-Energy Electrons Atsuro Nakano, Takahiro Kozawa, Seiichi Tagawa, Tomasz Szreder, James F. Wishart, Toshiyuki Kai and Tsutomu Shimokawa Jpn. J. Appl. Phys., 45, L197-L200 (2006). [Find paper at the Japanese Journal of Applied Physics] Abstract: In chemically amplified resists for ionizing radiations such as electron beams and extreme ultraviolet (EUV), low-energy electrons play an important role in the pattern formation processes. The reactivity of acid generators with low-energy electrons was evaluated using solvated electrons in tetrahydrofuran, which were generated by a pulsed electron beam. The rate constants of acid generators with the solvated electrons ranged from 0.6 to 1.9 x 1011 M-1s-1

55

Chlorophyll and acid rain  

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

Chlorophyll and acid rain Chlorophyll and acid rain Name: beachbum Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: A while ago I read an article that stated that after a plant received acid rain, there seemed to be less of chlorophyll a and b in the plant. I was wondering where does the chlorophyll go and what is the actual process (cell structure affected?). Replies: I think that less chlorophyll being present would be more likely a result of less being produced. Plant cell constantly turn over cell material, it will also constantly produce more. So if one compares a plant not exposed to acid rain (presumably producing a normal amount of chlorophyll and the exposed plant then one sees that the exposed plant has less chlorophyll than the unexposed plant. I do not think I can answer the rest of your question.

56

(Acid rain workshop)  

SciTech Connect

The traveler presented a paper entitled Susceptibility of Asian Ecosystems to Soil-Mediated Acid Rain Damage'' at the Second Workshop on Acid Rain in Asia. The workshop was organized by the Asian Institute of Technology (Bangkok, Thailand), Argonne National Laboratory (Argonne, Illinois), and Resource Management Associates (Madison, Wisconsin) and was sponsored by the US Department of Energy, the United Nations Environment Program, the United Nations Economic and Social Commission for Asia and the Pacific, and the World Bank. Papers presented on the first day discussed how the experience gained with acid rain in North America and Europe might be applied to the Asian situation. Papers describing energy use projections, sulfur emissions, and effects of acid rain in several Asian countries were presented on the second day. The remaining time was allotted to discussion, planning, and writing plans for a future research program.

Turner, R.S.

1990-12-05T23:59:59.000Z

57

Optical high acidity sensor  

DOE Patents (OSTI)

An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber. 10 figs.

Jorgensen, B.S.; Nekimken, H.L.; Carey, W.P.; O`Rourke, P.E.

1997-07-22T23:59:59.000Z

58

Optical high acidity sensor  

DOE Patents (OSTI)

An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and, a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber.

Jorgensen, Betty S. (Jemez Springs, NM); Nekimken, Howard L. (Los Alamos, NM); Carey, W. Patrick (Lynnwood, WA); O' Rourke, Patrick E. (Martinez, GA)

1997-01-01T23:59:59.000Z

59

Nucleic Acid Tools  

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

Nucleic Acid Tools Nucleic Acid Tools RNA 3D Motif Atlas, a representative collection of RNA 3D internal and hairpin loop motifs. Petrov, A.I., Zirbel, C.L., Leontis, N.B. (2013) Automated classification of RNA 3D motifs and the RNA 3D motif atlas. RNA. Non-redundant List of RNA-containing 3D structures. Leontis, N.B., & Zirbel, C.L. (2012) In Leontis, N. B., Westhof. E. (ed.), RNA 3D structure analysis and prediction. Springer Berlin Heidelberg Vol. 27, pp. 281-298. RNA Base Triple Atlas, a collection of motifs consisting of two RNA basepairs. Abu Almakarem, A.S., Petrov, A.I., Stombaugh, J., Zirbel, C.L. and Leontis, N.B. (2012) Comprehensive survey and geometric classification of base triples in RNA structures. Nucleic Acids Res, 40, 1407-1423. R3D Align, an application for detailed nucleotide to nucleotide

60

Synthesis of acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters  

DOE Patents (OSTI)

A process of preparing an acid addition salt of delta-aminolevulinc acid comprising: a) dissolving a lower alkyl 5-bromolevulinate and hexamethylenetetramine in a solvent selected from the group consisting of water, ethyl acetate, chloroform, acetone, ethanol, tetrahydrofuran and acetonitrile, to form a quaternary ammonium salt of the lower alkyl 5-bromolevulinate; and b) hydrolyzing the quaternary ammonium salt with an inorganic acid to form an acid addition salt of delta-aminolevulinic acid.

Moens, Luc (Lakewood, CO)

2003-06-24T23:59:59.000Z

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


61

Acid Placement in Acid Jetting Treatments in Long Horizontal Wells  

E-Print Network (OSTI)

In the Middle East, extended reach horizontal wells (on the order of 25,000 feet of horizontal displacement) are commonly acid stimulated by jetting acid out of drill pipe. The acid is jetted onto the face of the openhole wellbore as the drill pipe is withdrawn from the well. The jetting action helps to remove the drilling fluid filter cake and promote the acid to penetrate into the formation and form wormholes to stimulate the well. However, with very long sections of wellbore open to flow, the acid placement and subsequent wormhole distribution and penetration depths are uncertain. This study has modeled the acid jetting process using a comprehensive model of acid placement and wormhole propagation in a horizontal well. It is presumed that the acid jetting tool removes the drilling mud filter cake, so that no filter cake exists between the end of the drill pipe and the toe of the well. Correspondingly, the model also assumes that there is an intact, low-permeability filter cake on the borehole wall between the end of the drill pipe and the heel of the well. The drill pipe is modeled as being withdrawn from the well during the acid jetting treatment, as is done in practice. The acidizing simulator predicts the distribution of acid and the depths of wormholes formed as functions of time and position during the acid jetting treatment. The model shows that the acid jetting process as typically applied in these wells preferentially stimulates the toe region of the horizontal well. Comparisons of the simulation predictions with published data for acid jetting treatments in such wells showed good general agreement. Based on the simulation study, this study presents recommendations for improved acid jetting treatment procedures to improve the distribution of acid injected into the formation.

Sasongko, Hari

2012-05-01T23:59:59.000Z

62

Lubrication with boric acid additives  

DOE Patents (OSTI)

Self-lubricating resin compositions including a boric acid additive and a synthetic polymer including those thermoset materials.

Erdemir, Ali (Naperville, IL)

2000-01-01T23:59:59.000Z

63

LIGHT EMITTING DlODE TESTING AND ANALYSIS  

SciTech Connect

This report covers the work done to analyze the optical output of a Light Emitting Diode. This diode consists' of a Monsanto MV2 LED chip in an MV50 package. A calculator based instrumentation system is described including programming techniques used to reduce and display data. A Light Instrumentation System with specially designed fiber optic cables is described which gathers data for processing by the calculator based instrumentation system. Future work will include analysis of the RCA 8571 Photomultiplier Tube.

Bowers, J L; Allen, T E

1973-08-01T23:59:59.000Z

64

Forgetting for knowledge bases in DL-Lite  

Science Conference Proceedings (OSTI)

To support the reuse and combination of ontologies in Semantic Web applications, it is often necessary to obtain smaller ontologies from existing larger ontologies. In particular, applications may require the omission of certain terms, e. g., concept ... Keywords: 68T30, Description logics, Forgetting, Ontology

Zhe Wang; Kewen Wang; Rodney Topor; Jeff Z. Pan

2010-02-01T23:59:59.000Z

65

dlCC Opt: Optimization Software for Renewable Energy Projects  

There are numerous options for renewable energy systems development. Location, size, type of system, and a number of other criteria need to be ...

66

Non-Lead/Acid Battery Recyclers:  

Science Conference Proceedings (OSTI)

... in H2O solution such as Citric Acid, Acetic Acid, Acetates or ... MnO2 is soluble in sulfuric acid only at ... cells were treated by alkali followed by acids. ...

2011-08-02T23:59:59.000Z

67

Fatty Acid Methods and Measurements  

Science Conference Proceedings (OSTI)

... mixtures are analyzed by either gas chromatography with ... for fatty acids, including various oils and biodiesel ... Material 3276 Carrot Extract in Oil," Anal ...

2012-10-22T23:59:59.000Z

68

Acidic gas capture by diamines  

DOE Patents (OSTI)

Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a diamine (e.g., piperazine) and carbon dioxide. One example of a method may involve a method for removing acidic gas comprising contacting a gas mixture having an acidic gas with a solvent, wherein the solvent comprises piperazine in an amount of from about 4 to about 20 moles/kg of water, and carbon dioxide in an amount of from about 0.3 to about 0.9 moles per mole of piperazine.

Rochelle, Gary (Austin, TX); Hilliard, Marcus (Missouri City, TX)

2011-05-10T23:59:59.000Z

69

Volatility of Aqueous Acetic Acid, Formic Acid, and Sodium Acetate  

Science Conference Proceedings (OSTI)

The quality of water and steam is central to ensuring power plant component availability and reliability. A key part of developing operating cycle chemistry guidelines is an understanding of the impurity distribution between water and steam. This report examines the volatility of some of the principal cycle organic corrodents: acetic acid, formic acid, and sodium acetate.

2000-07-28T23:59:59.000Z

70

Carbonic Acid Retreatment of Biomass  

DOE Green Energy (OSTI)

This project sought to address six objectives, outlined below. The objectives were met through the completion of ten tasks. (1) Solidify the theoretical understanding of the binary CO{sub 2}/H{sub 2}O system at reaction temperatures and pressures. The thermodynamics of pH prediction have been improved to include a more rigorous treatment of non-ideal gas phases. However it was found that experimental attempts to confirm theoretical pH predictions were still off by a factor of about 1.8 pH units. Arrhenius experiments were carried out and the activation energy for carbonic acid appears to be substantially similar to sulfuric acid. Titration experiments have not yet confirmed or quantified the buffering or acid suppression effects of carbonic acid on biomass. (2) Modify the carbonic acid pretreatment severity function to include the effect of endogenous acid formation and carbonate buffering, if necessary. It was found that the existing severity functions serve adequately to account for endogenous acid production and carbonate effects. (3) Quantify the production of soluble carbohydrates at different reaction conditions and severity. Results show that carbonic acid has little effect on increasing soluble carbohydrate concentrations for pretreated aspen wood, compared to pretreatment with water alone. This appears to be connected to the release of endogenous acids by the substrate. A less acidic substrate such as corn stover would derive benefit from the use of carbonic acid. (4) Quantify the production of microbial inhibitors at selected reaction conditions and severity. It was found that the release of inhibitors was correlated to reaction severity and that carbonic acid did not appear to increase or decrease inhibition compared to pretreatment with water alone. (5) Assess the reactivity to enzymatic hydrolysis of material pretreated at selected reaction conditions and severity. Enzymatic hydrolysis rates increased with severity, but no advantage was detected for the use of carbonic acid compared to water alone. (6) Determine optimal conditions for carbonic acid pretreatment of aspen wood. Optimal severities appeared to be in the mid range tested. ASPEN-Plus modeling and economic analysis of the process indicate that the process could be cost competitive with sulfuric acid if the concentration of solids in the pretreatment is maintained very high ({approx}50%). Lower solids concentrations result in larger reactors that become expensive to construct for high pressure applications.

Baylor university

2003-06-01T23:59:59.000Z

71

Carbonic Acid Pretreatment of Biomass  

SciTech Connect

This project sought to address six objectives, outlined below. The objectives were met through the completion of ten tasks. 1) Solidify the theoretical understanding of the binary CO2/H2O system at reaction temperatures and pressures. The thermodynamics of pH prediction have been improved to include a more rigorous treatment of non-ideal gas phases. However it was found that experimental attempts to confirm theoretical pH predictions were still off by a factor of about 1.8 pH units. Arrhenius experiments were carried out and the activation energy for carbonic acid appears to be substantially similar to sulfuric acid. Titration experiments have not yet confirmed or quantified the buffering or acid suppression effects of carbonic acid on biomass. 2) Modify the carbonic acid pretreatment severity function to include the effect of endogenous acid formation and carbonate buffering, if necessary. It was found that the existing severity functions serve adequately to account for endogenous acid production and carbonate effects. 3) Quantify the production of soluble carbohydrates at different reaction conditions and severity. Results show that carbonic acid has little effect on increasing soluble carbohydrate concentrations for pretreated aspen wood, compared to pretreatment with water alone. This appears to be connected to the release of endogenous acids by the substrate. A less acidic substrate such as corn stover would derive benefit from the use of carbonic acid. 4) Quantify the production of microbial inhibitors at selected reaction conditions and severity. It was found that the release of inhibitors was correlated to reaction severity and that carbonic acid did not appear to increase or decrease inhibition compared to pretreatment with water alone. 5) Assess the reactivity to enzymatic hydrolysis of material pretreated at selected reaction conditions and severity. Enzymatic hydrolysis rates increased with severity, but no advantage was detected for the use of carbonic acid compared to water alone. 6) Determine optimal conditions for carbonic acid pretreatment of aspen wood. Optimal severities appeared to be in the mid range tested. ASPEN-Plus modeling and economic analysis of the process indicate that the process could be cost competitive with sulfuric acid if the concentration of solids in the pretreatment is maintained very high (~50%). Lower solids concentrations result in larger reactors that become expensive to construct for high pressure applications.

G. Peter van Walsum; Kemantha Jayawardhana; Damon Yourchisin; Robert McWilliams; Vanessa Castleberry

2003-05-31T23:59:59.000Z

72

A ACID RAIN Audrey Gibson  

E-Print Network (OSTI)

acid and nitric acid. Sunlight increases the rate of most of these reactions. Electric utility plants;Gas Natural Sources Concentration Carbon dioxide CO2 Decomposition 355 ppm Nitric oxide NO Electric, 2010 #12;Gas Non-Natural Sources Concentration Nitric oxide NO Internal Combustion (cars) 0.2 ppm

Toohey, Darin W.

73

Photochemical Studies on Xanthurenic Acid  

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

Photochemical Studies on Xanthurenic Acid Photochemical Studies on Xanthurenic Acid J. E. Roberts, J. F. Wishart, L. Martinez, C. F. Chignell Photochem.Photobiol. 72, 467-471 (2000) Abstract: The tryptophan metabolite xanthurenic acid has been isolated from aged human cataractous lenses. The photophysical properties of xanthurenic acid were examined to determine if it is a potential chromophore for age-related cataractogenesis. We found that xanthurenic acid produces singlet oxygen (F*= 0.17; CD3OD) with the same efficiency as the lenticular chromophore N-formyl kynurenine and quenches singlet oxygen at a rate similar to other tryptophan metabolites (2.1 x 107 M-1 s-1; CD3OD) found in the eye. As the mechanisms of induction of cataracts may also involve redox reactions, the interactions of hydrated electrons (e-aq), the azide radical

74

Catalytic Hydrogenation of Glutamic Acid  

Science Conference Proceedings (OSTI)

Technology to convert biomass to chemical building blocks provides an opportunity to displace fossil fuels and increase the economic viability of bio-refineries. Coupling fermentation capability with aqueous phase catalysis provides novel routes to monomers and chemicals, including those not accessible from petrochemical routes. Glutamic acid provides a platform to numerous compounds through thermochemical approaches including, hydrogentation, cyclyization, decarboxylation and deamination. Hydrogenation of amino acids also provides access into chiral compounds with high enantio-purity. This paper details aqueous phase hydrogenation reactions we have developed that lead to valuable chemical intermediates from glutamic acid.

Holladay, John E.; Werpy, Todd A.; Muzatko, Danielle S.

2004-05-01T23:59:59.000Z

75

PRODUCTION OF TRIFLUOROACETIC ACID COMPOUNDS  

DOE Patents (OSTI)

A process is described for the preparation of trifluoroacetic acid. Acetone vapor diluted wlth nitrogen and fluorine also diluted with nltrogen are fed separately at a temperature of about 210 deg C into a reaction vessel containing a catalyst mass selected from-the group consisting of silver and gold. The temperature in the reaction vessel is maintained in the range of 200 deg to 250 deg C. The reaction product, trifluoroacetyl fluoride, is absorbed in aqueous alkali solution. Trifluoroacetic acid is recovered from the solution by acidification wlth an acid such as sulfuric followed by steam distillation.

Haworth, W.N.; Stacey, M.

1949-08-30T23:59:59.000Z

76

Metabolism of Thioctic Acid in Algae  

E-Print Network (OSTI)

METABOLISM OF THlOCTlC ACID IN ALGAE TWO-WEEK LOAN COPY ThisMETABOLISM OF THIOCTIC ACID IN ALGAE Hans Grisebach, R. , C.METABOLISM OF THIOCTIC ACID IN ALGAE Hans Grisebach, R. C.

Grisebach, Hans; Fuller, R.C.; Calvin, M.

1956-01-01T23:59:59.000Z

77

Nucleic acid arrays and methods of synthesis  

SciTech Connect

The present invention generally relates to high density nucleic acid arrays and methods of synthesizing nucleic acid sequences on a solid surface. Specifically, the present invention contemplates the use of stabilized nucleic acid primer sequences immobilized on solid surfaces, and circular nucleic acid sequence templates combined with the use of isothermal rolling circle amplification to thereby increase nucleic acid sequence concentrations in a sample or on an array of nucleic acid sequences.

Sabanayagam, Chandran R. (Allston, MA); Sano, Takeshi (Needham, MA); Misasi, John (Syracuse, NY); Hatch, Anson (Seattle, WA); Cantor, Charles (Del Mar, CA)

2001-01-01T23:59:59.000Z

78

Seasonalepisodic control of acid deposition  

E-Print Network (OSTI)

This report contains the climatological, technical and economic factors for episodic and seasonal control of emissions in existing power plants. Analyzing a large data set of acid deposition for the years 1982-85, we find ...

Fay, James A.

1988-01-01T23:59:59.000Z

79

Polybenzimidazole: Phosphoric Acid Fuel Cells  

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

Polybenzimidazole: Phosphoric Acid Fuel Cells Speaker(s): Dave Sopchak Date: May 1, 2013 - 3:00pm - 4:00pm Location: 90-3122 Seminar HostPoint of Contact: Max Wei The PBI...

80

Controlling acid rain : policy issues  

E-Print Network (OSTI)

The policy and regulatory ramifications of U.S. acid rain control programs are examined; particularly, the alternative of a receptor-oriented strategy as constrasted to emission-oriented proposals (e.g., the Mitchell bill) ...

Fay, James A.

1983-01-01T23:59:59.000Z

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


81

Acidic Ion Exchange Membrane - Energy Innovation Portal  

Technology Marketing Summary In this invention we report the synthesis of a copolymer of vinyl phosphonic acid (VPA) and vinyl zirconium phosphorous (VZP) acid has ...

82

Ultra-Deep Strong Acidizing and Sour Gas Environments  

Science Conference Proceedings (OSTI)

The two acidizing environments that were studied included 10% acetic acid and a mixture of 10% acetic acid and 10% hydrochloric acid with 15 psia hydrogen...

83

Well development with acid wool  

SciTech Connect

This paper describes a unique method to prevent the lost circulation of drilling fluids in fractured bedrock aquifers. The method utilizes acid wool to bridge fractures and prevent the migration of these fluids in to the reservoir. This wool material collects the mud on its surface and allows it to be removed during development. The wool is produced from melted silic-carbonate rock and is dissolved using hydrochloric acid. The timing and methodology of installation is provided.

Hanna, T.M. (Hydrologic Consultants Inc., Lakewood, CO (USA)); Rothauge, F. (Quality Drilling Fluids Engineering Inc., Longmont, CO (USA))

1989-10-01T23:59:59.000Z

84

Acid sorption regeneration process using carbon dioxide  

DOE Patents (OSTI)

Carboxylic acids are sorbed from aqueous feedstocks onto a solid adsorbent in the presence of carbon dioxide under pressure. The acids are freed from the sorbent phase by a suitable regeneration method, one of which is treating them with an organic alkylamine solution thus forming an alkylamine-carboxylic acid complex which thermally decomposes to the desired carboxylic acid and the alkylamine.

King, C. Judson (Kensington, CA); Husson, Scott M. (Anderson, SC)

2001-01-01T23:59:59.000Z

85

Method for production of petroselinic acid and OMEGA12 hexadecanoic acid in transgenic plants  

DOE Patents (OSTI)

The present invention relates to a process for producing lipids containing the fatty acid petroselinic acid in plants. The production of petroselinic acid is accomplished by genetically transforming plants which do not normally accumulate petroselinic acid with a gene for a .omega.12 desaturase from another species which does normally accumulate petroselinic acid.

Ohlrogge, John B. (Okemos, MI); Cahoon, Edgar B. (Lansing, MI); Shanklin, John (Upton, NY); Somerville, Christopher R. (Okemos, MI)

1995-01-01T23:59:59.000Z

86

Method for production of petroselinic acid and OMEGA12 hexadecanoic acid in transgenic plants  

DOE Patents (OSTI)

The present invention relates to a process for producing lipids containing the fatty acid, petroselinic acid, in plants. The production of petroselinic acid is accomplished by genetically transforming plants which do not normally accumulate petroselinic acid with a gene for a {omega}12 desaturase from another species which does normally accumulate petroselinic acid. 19 figs.

Ohlrogge, J.B.; Cahoon, E.B.; Shanklin, J.; Somerville, C.R.

1995-07-04T23:59:59.000Z

87

Advances in Conjugated Linoleic Acid Research, Volume 3Chapter 3 Syntheses of Conjugated Linoleic Acids  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 3 Syntheses of Conjugated Linoleic Acids Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf...

88

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 9 Conjugated Linoleic Acid in Hypertension  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 9 Conjugated Linoleic Acid in Hypertension Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf...

89

Advances in Conjugated Linoleic Acid Research, Volume 3Chapter 1 Conjugated Linoleic Acid Synthesis  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 1 Conjugated Linoleic Acid Synthesis Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf...

90

Why Sequence Algae from Acidic Waters  

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

Sequence Algae from Acidic Waters? Strains of green algae from isolated acidic waters are being sequenced to understand how they adapt to variable levels of carbon dioxide, as well...

91

Recovery of mercury from acid waste residues  

DOE Patents (OSTI)

Mercury can be recovered from nitric acid-containing fluids by reacting the fluid with aluminum metal to produce mercury metal, and thence quenching the reactivity of the nitric acid prior to nitration of the mercury metal. 1 fig.

Greenhalgh, W.O.

1987-02-27T23:59:59.000Z

92

trans Fatty Acid Content Laboratory Proficiency Program  

Science Conference Proceedings (OSTI)

Lab Proficiency Testing service for trans fatty acid content. Samples include non-hydrogenated Soybean Oil and hydrogenated Soybean Oil. trans Fatty Acid Content Laboratory Proficiency Program Laboratory Proficiency Program (LPP) aocs applicants certifie

93

Recovery of mercury from acid waste residues  

DOE Patents (OSTI)

Mercury can be recovered from nitric acid-containing fluids by reacting the fluid with aluminum metal to produce mercury metal, and then quenching the reactivity of the nitric acid prior to nitration of the mercury metal.

Greenhalgh, Wilbur O. (Richland, WA)

1989-01-01T23:59:59.000Z

94

Fuel cell electrolyte membrane with acidic polymer  

DOE Patents (OSTI)

An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric.

Hamrock, Steven J. (Stillwater, MN); Larson, James M. (Saint Paul, MN); Pham, Phat T. (Little Canada, MN); Frey, Matthew H. (Cottage Grove, MN); Haugen, Gregory M. (Edina, MN); Lamanna, William M. (Stillwater, MN)

2009-04-14T23:59:59.000Z

95

acid  

Office of Legacy Management (LM)

cut into the Pajarito Plateau in north- central New Mexico. From 1943 to 1964, during nuclear weapons research activities at the Los Alamos National Laboratory (LANL, then...

96

Recovery of boric acid from ion exchangers  

DOE Patents (OSTI)

The recovery of boric acid from an anion exchange resin is improved by eluting the boric acid with an aqueous solution of ammonium bicarbonate. The boric acid can be readily purified and concentrated by distilling off the water and ammonium bicarbonate. This process is especially useful for the recovery of boric acid containing a high percentage of .sup.10 B which may be found in some nuclear reactor coolant solutions.

Pollock, Charles W. (Richland, WA)

1976-01-01T23:59:59.000Z

97

Conversion of Levulinic Acid to Methyl Tetrahydrofuran ...  

Search PNNL. PNNL Home; About; Research; Publications; Jobs; News; Contacts; Conversion of Levulinic Acid to Methyl Tetrahydrofuran. Battelle ...

98

Production of high molecular weight polylactic acid  

DOE Patents (OSTI)

A degradable high molecular weight poly(lactic acid) is described. The poly(lactic acid) has a terminal end group of one of carboxyl or hydroxyl groups with low molecular weight poly(lactic acid) units coupled with linking agents of di-isocyanates, bis-epoxides, bis-oxazolines and bis-ortho esters. The resulting high molecular weight poly(lactic acid) can be used for applications taking advantage of the improved physical properties.

Bonsignore, P.V.

1995-11-28T23:59:59.000Z

99

Production of high molecular weight polylactic acid  

DOE Patents (OSTI)

A degradable high molecular weight poly(lactic acid). A poly(lactic acid) has a terminal end group of one of carboxyl or hydroxyl groups with low molecular weight poly(lactic acid) units coupled with linking agents of di-isocyanates, bis-epoxides, bis-oxazolines and bis-ortho esters. The resulting high molecular weight poly(lactic acid) can be used for applications taking advantage of the improved physical properties.

Bonsignore, Patrick V. (Joilet, IL)

1995-01-01T23:59:59.000Z

100

NITRIC ACID RECPVERY FROM WASTE COLUTIONS  

DOE Patents (OSTI)

The recovery of nitric acid from aqueous nitrate solutions containing fission products as impurities is described. It is desirable to subject such solutions to concentration by evaporation since nitric acid is regenerated thereby. A difficulty, however, is that the highly radioactive fission product ruthenium is volatilized together with the nitric acid. It has been found that by adding nitrous acids ruthenium volatilization is suppressed and reduced to a negligible degree so that the distillate obtained is practically free of rutheniuim.

Wilson, A.S.

1959-04-14T23:59:59.000Z

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


101

NITRIC ACID RECOVERY FROM WASTE SOLUTIONS  

DOE Patents (OSTI)

The recovery of nitric acid from aqueous nitrate solutions containing fission products as impurities is described. It is desirable to subject such solutions to concentration by evaporation since nitric acid is regenerated thereby. A difficulty, however, is that the highly radioactive fission product ruthenium is volatilized together with the nitric acid. It has been found that by adding nitrous acid, ruthenium volatilization is suppressed and reduced to a negligible degree so that the distillate obtained is practically free of ruthenium.

Wilson, A.S.

1959-04-14T23:59:59.000Z

102

Conversion of Levulinic Acid to Methyl Tetrahydrofuran ...  

Biomass and Biofuels Conversion of Levulinic Acid to Methyl Tetrahydrofuran Pacific Northwest National Laboratory. Contact PNNL About This Technology ...

103

Synthesis of an acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters  

DOE Patents (OSTI)

A process is disclosed for preparing an acid addition salt of delta-aminolevulinic acid comprising. The process involves dissolving a lower alkyl 5-bromolevulinate and an alkali metal diformylamide in an organic solvent selected from the group consisting of acetonitrile, methanol, tetrahydrofuran, 2-methyltetrahydrofuran and methylformate or mixtures to form a suspension of an alkyl 5-(N,N-diformylamino) levulinate ester; and hydrolyzing the alkyl 5-(N,N-diformylamino) levulinate with an inorganic acid to form an acid addition salt of delta-amino levulinic acid.

Moens, L.

1999-05-25T23:59:59.000Z

104

Hydrogenation using hydrides and acid  

DOE Patents (OSTI)

The present invention relates to a very rapid, non-catalytic process for hydrogenating unsaturated organic compounds that can be carried out at temperatures generally lower than previously utilized. In this process organic compounds which contain at least one reducible functional group are hydrogenated non-catalytically by reacting them with a hydride complex and a strong acid. The reducible functional group may be, for example, C=C, C-OH, C-O-C, or a strained cyclic structure. If the reactants are not mutually soluble, they are dissolved in an appropriate inert solvent. 3 tabs.

Bullock, R.M.

1989-12-13T23:59:59.000Z

105

(Acidic deposition and the environment)  

Science Conference Proceedings (OSTI)

The travelers presented several papers at the Fourth International Conference on Acidic Deposition. These covered the following topics: atmospheric chemistry and deposition of airborne nitrogen compounds, soil solution chemistry in high-elevation spruce forests, and forest throughfall measurements for estimating total sulfur deposition to ecosystems. In addition, S. E. Lindberg was invited to organize and chair a conference session on Throughfall and Stemflow Experiments, and to present an invited lecture on Atmospheric Deposition and Canopy Interactions of Metals and Nitrogen in Forest Ecosystems: The Influence of Global Change'' at the 110th Anniversary Celebration of the Free University of Amsterdam.

Garten, C.T.; Lindberg, S.E.; Van Miegroet, H.

1990-10-24T23:59:59.000Z

106

Development of an Amino Acid (in Solution) Standard ...  

Science Conference Proceedings (OSTI)

Development of an Amino Acid (in Solution) Standard Reference Material. Summary: Amino acids are the sequential components ...

2013-03-13T23:59:59.000Z

107

LITERATURE REVIEW OF BORIC ACID SOLUBILITY DATA  

SciTech Connect

A new solvent system is being evaluated for use in the Modular Caustic-Side Solvent Extraction Unit (MCU) and in the Salt Waste Processing Facility (SWPF). The new system replaces the current dilute nitric acid strip solution with 0.01 M boric acid. This literature study is performed to determine if there is a potential for boric acid to crystallize in the lines with emphasis on the transfer lines to the Defense Waste Processing Facility. This report focuses on the aqueous phase chemistry of boric acid under conditions relevant to MCU and SWPF. Operating and transfer conditions examined for the purpose of this review include temperatures between 13 C (McLeskey, 2008) and 45 C (Fondeur, 2007) and concentrations from 0 to 3M in nitric acid as well as exposure of small amounts of entrained boric acid in the organic phase to the sodium hydroxide caustic wash stream. Experiments were also conducted to observe any chemical reactions and off-gas generation that could occur when 0.01 M boric acid solution mixes with 3 M nitric acid solution and vice versa. Based on the low concentration (0.01M) of boric acid in the MCU/SWPF strip acid and the moderate operating temperatures (13 C to 45 C), it is unlikely that crystallization of boric acid will occur in the acid strip solution under process or transfer conditions. Mixing experiments of boric and nitric acid show no measurable gas generation (< 1 cc of gas per liter of solution) under similar process conditions.

Crapse, K.; Kyser, E.

2011-09-22T23:59:59.000Z

108

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products. 5 figs.

Cantor, C.R.; Niemeyer, C.M.; Smith, C.L.; Sano, Takeshi; Hnatowich, D.J.; Rusckowski, M.

1996-10-01T23:59:59.000Z

109

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.

Cantor, Charles R. (Boston, MA); Niemeyer, Christof M. (Bremen, DE); Smith, Cassandra L. (Boston, MA); Sano, Takeshi (Boston, MA); Hnatowich, Donald J. (Brookline, MA); Rusckowski, Mary (Southborough, MA)

1996-01-01T23:59:59.000Z

110

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.

Cantor, Charles R. (Boston, MA); Niemeyer, Christof M. (Bremen, DE); Smith, Cassandra L. (Boston, MA); Sano, Takeshi (Boston, MA); Hnatowich, Donald J. (Brookline, MA); Rusckowski, Mary (Southborough, MA)

1999-10-12T23:59:59.000Z

111

Nucleic Acid Standards - Program List  

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

List of Programs and References List of Programs and References CEHS M. A. El Hassan & C. R. Calladine (1995). ``The Assessment of the Geometry of Dinucleotide Steps in Double-Helical DNA: A New Local Calculation Scheme.'' J. Mol. Biol. 251, 648-664. X. J. Lu, M. A. El Hassan & C. A. Hunter (1997). ``Structure and Conformation of Helical Nucleic Acids: Analysis Program (SCHNAaP).''J. Mol. Biol. 273, 668-680. CompDNA (Please refer to Dr. Andrey A. Gorin: agor@sbnmr1.ski.mskcc.org OR Dr. Victor B. Zhurkin: zhurkin@lmmb.nci.nih.gov) A. A. Gorin, V. B. Zhurkin & W. K. Olson (1995). ``B-DNA Twisting Correlates with Base-pair Morphology.'' J. Mol. Biol. 247, 34-48. K. M. Kosikov, A. A. Gorin, V. B. Zhurkin & W. K. Olson (1999). ``DNA Stretching and Compression: Large-scale Simulations of Double Helical

112

Nucleic Acid Standards - Refinement Parameters  

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

Refinement Parameters Refinement Parameters The DNA/RNA topology and parameter files for X-PLOR are shown below. These were tested with DNA structures and with protein-DNA complexes. X-PLOR topology file X-PLOR parameter files: X-PLOR parameter file For the refinement of high resolution structures (< 1.7 Angstroms) the parameter file with distinct bond distances and bond angles for both C2'-endo and C3'-endo conformations should be considered: X-PLOR parameter file for high resolution structures "New Parameters for the Refinement of Nucleic Acid Containing Structures." Gary Parkinson, Jaroslav Vojtechovsky, Lester Clowney, Axel Brunger*, and Helen M. Berman. (1996) Acta Cryst. D 52, 57-64 Rutgers University, Department of Chemistry, Piscataway, NJ 08855-0939; *The Howard Hughes Medical Institute and Departments of Molecular and

113

A Direct, Biomass-Based Synthesis of Benzoic Acid: Formic Acid-Mediated Deoxygenation of the Glucose-Derived Materials Quinic Acid and Shikimic Acid  

E-Print Network (OSTI)

A Direct, Biomass-Based Synthesis of Benzoic Acid: Formic200X An alternative biomass-based route to aromatics isaromatic compounds from biomass resources could provide a

Arceo, Elena

2011-01-01T23:59:59.000Z

114

Biorenewable Process to Acrylic Acid - PNNL: Available ...  

Acrylic acid is commonly used in the production of consumer products. Highly notable is its use in producing super absorbent polymers, the component ...

115

Available Technologies: Enhancing Fatty Acid Production by ...  

Synthetic biology has opened the door to fatty acid production from simple carbon sources through engineering microbes such as E. coil or yeast.

116

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 15 Metabolism of Conjugated Linoleic Acids  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 15 Metabolism of Conjugated Linoleic Acids Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry 305CB38A5497B8636973A9A3E5756142 AOCS Press ...

117

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 18 Conjugated Linoleic Acid in Experimental Atherosclerosis  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 18 Conjugated Linoleic Acid in Experimental Atherosclerosis Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry AA212B9659CFD264953B73B80A39B367 AOCS

118

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 8 Conjugated Linoleic Acid in Food  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 8 Conjugated Linoleic Acid in Food Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Downloadable pdf of Chapter 8 Conjugated Lino

119

Fatty Acids in Health Promotion and Disease CausationChapter 16 Ruminal Metabolism of Fatty Acids: Modulation of Polyunsaturated, Conjugated, and trans Fatty Acids in Meat and Milk  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 16 Ruminal Metabolism of Fatty Acids: Modulation of Polyunsaturated, Conjugated, and trans Fatty Acids in Meat and Milk Health Nutrition Biochemistry eChapters Health - Nutrit

120

Geochemistry of Hydrofluoric Acid in Kaolinitic Soils  

Science Conference Proceedings (OSTI)

This document explores the geochemical reactions likely to occur when hydrofluoric acid is spilled on Savannah River Site (SRS) soil. In particular, we evaluate the potential of environmental damage from a one-time release of concentrated hydrofluoric acid into a trench. According to interviews with personnel involved, sometime between 1955 and 1960 drums of 50-60 per cent hydrofluoric acid were disposed in a trench in the Central Shops area. The method of disposal suggests that most of the acid would have been released at the time of burial. No evidence of drum disposal or acidic pH values was found. Therefore, the Soil and Groundwater Closure Projects group requested that we evaluate potential risk by examining the major geochemical interactions expected between hydrofluoric acid and soil. The geochemical calculations in this report were done with The Geochemist's Workbench (Registered). This program uses an extended Debye-Huckel method for calculating activity coefficients. The conclusions of this report are accurate, but some of the intermediate steps may have higher uncertainty. Hydrofluoric acid disposed in a trench in the area would have reacted with soil kaolinite to neutralize the pH to a value of about 4.2. Based on conservative assumptions, this would have occurred within the top 500 cm of soil. This analysis considers only the reaction of the acid with kaolinite. Other processes such as dilution, dispersion, and clogging of permeability would contribute to neutralization of the acid within a shorter distance. When the acid solution reached the water table, dilution would have driven the solution to saturation with gibbsite. A resulting layer enriched in aluminum may be the only remnant of the acid disposal identifiable today. However, any such layer would be difficult to identify because of the normally high aluminum concentrations in the soil. Subtle textural evidence of shallow soil dissolution may be present, but 40 years of rainfall infiltration may well have erased such evidence.

DENHAM, MILES

2004-05-11T23:59:59.000Z

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


121

Electrostatic precipitation of condensed acid mist  

Science Conference Proceedings (OSTI)

This project addresses the acid mist that is formed by condensation of sulfuric acid vapor in flue gas from coal-fired utility boilers. An acid mist can be formed whenever the flue gas temperature approaches the prevailing acid dew point. This commonly occurs when the gas is subjected to rapid adiabatic cooling in a wet scrubber system for flue gas desulfurization. Acid mists can also sometimes result from unexpected temperature excursions caused by air inleakage, load cycling, and start-up operations. A wet electrostatic precipitator (WESP) is the best control option for acid mist. The mist would blind a fabric filter and attack glass fiber fabrics. A wet ESP is required because the acid would quickly corrode the plates in a conventional dry ESP. The wet ESP also offers the advantages of no rapping reentrainment and no sensitivity to fly ash resistivity. Therefore, this program has been structured around the use of a compact, wet ESP to control acid mist emissions. 7 refs.

Not Available

1990-01-01T23:59:59.000Z

122

Hydriodic acid-anode-depolarized hydrogen generator  

SciTech Connect

Hydrogen is recovered from aqueous hydriodic acid in the presence of sulfuric acid, in an electrolysis cell having an anode and cathode compartment separated by a hydrogen ion permeable membrane, by electrochemically liberating iodine in the anode compartment by anodization of iodide anions, and electrochemically generating hydrogen in the cathode compartment from hydrogen cations that migrate across the membrane.

Maskalick, N.J.

1984-07-17T23:59:59.000Z

123

Effect of Conjugated Linoleic Acid or Oleic Acid Addition on Fatty Acid Composition Profiles of Poultry Meat  

E-Print Network (OSTI)

Two different studies were conducted to reduce the overall amount of omega-6 fatty acids in broiler chickens. The first experiment was performed to determine the effects of dietary conjugated linoleic acid (CLA) and omega-3 fatty acid combination on the omega-6 fatty acid accumulation in broiler chicken breast and thigh meat. Eight broilers from each treatment were processed at 4 and 6 weeks of age, respectively. Regarding the diets containing five different fat sources, broiler chickens fed CLA and fish oil diet had a lower C20:4 (arachidonic acid, AA, n-6) deposition but showed a higher n-3/n-6 ratio in breast and thigh meat than those fed a flaxseed oil diet and CLA and flaxseed oil diet (P 0.05). However, the addition of CLA and fish oil to the diet resulted in a increase of polyunsaturated fatty acid (PUFA) concentration in broiler chicken breast and thigh meat when compared to that of fish oil diet (P<0.05). The second experiment was conducted based on six different combination of n-3 and n-9 fatty acids. One bird per pen was processed, and each bird was weighed, and blood, liver, breast and thigh samples from the bird were collected. Although the generation of prostaglandin E2 (PGE2) was not affected due to combination of n-3 and n-9 fatty acids in our diets, the deposition of n-6 fatty acids including C18:2 and C20:4 was decreased in broiler chicken breast and/or thigh muscles as n-3 fatty acids were supplied to broiler chickens for 9 weeks. Eicosapentaenoic acid (C20:5, EPA, n-3) addition to poultry diet (FEO) did not reduce the deposition of C18:2 and/or C20:4 as much as C22:6 (FDO) did. When C20:5 and C22:6 were blended to poultry diet (FHO) and fed to broiler chickens for 9 weeks, synergistic effects were observed. Reduction of C20:4 was obtained when FHO diet was fed to broiler chickens, and it may be induced due to decreased expression of delta-6 desaturase mRNA.

Shin, Dae Keun

2010-05-01T23:59:59.000Z

124

Advances in Conjugated Linoleic Acid Research, Vol 2  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 2, is the second book in a series devoted entirely to conjugated linoleic acid. Advances in Conjugated Linoleic Acid Research, Vol 2 Health Nutrition Biochemistry Hardback Books Health - Nutrition

125

Fatty Acids in Health Promotion and Disease Causation  

Science Conference Proceedings (OSTI)

The Fatty Acids in Health Promotion and Disease Causation book has four main focuses and sections. Fatty Acids in Health Promotion and Disease Causation Health acid analysis aocs april articles chloropropanediol contaminants detergents dietary fats divis

126

Release of gas from heated oil shale and from mixtures of dolomite and quartz  

DOE Green Energy (OSTI)

Experiments and calculations were performed to determine the amount of gas released from heated oil shale. It is known that kerogen, a component of oil shale, releases gas when heated. When the temperature is increased, the kerogen yields not only gas but char, a solid that reacts with steam and CO/sub 2/ (by-products of heated shale) to yield H/sub 2/ and CO. It was found that as much as 200 moles of CO and H/sub 2/ could be produced by the reaction of 1 kg of kerogen with steam at 1200/sup 0/C. Another of the gas-releasing components of oil shale, carbonate minerals, begins to decompose at 500/sup 0/C; decomposition is complete at about 700/sup 0/C after 1000 hr. The minerals begin to decompose at a lower temperature in steam. Reactions among carbonates and silicates resulted in the release of CO/sub 2/ even under high CO/sub 2/ pressure.

Taylor, R.W.

1976-01-12T23:59:59.000Z

127

HIGH-PRESSURE AIR INJECTION: APPLICATION IN A FRACTURED AND KARSTED DOLOMITE RESERVOIR  

SciTech Connect

The Bureau of Economic Geology and Goldrus Producing Company have assembled a multidisciplinary team of geoscientists and engineers to evaluate the applicability of high-pressure air injection (HPAI) in revitalizing a nearly abandoned carbonate reservoir in the Permian Basin of West Texas. The characterization phase of the project is utilizing geoscientists and petroleum engineers from the Bureau of Economic Geology and the Department of Petroleum Engineering (both at The University of Texas at Austin) to define the controls on fluid flow in the reservoir as a basis for developing a reservoir model. This model will be used to define a field deployment plan that Goldrus, a small independent oil company, will implement by drilling both vertical and horizontal wells during the demonstration phase of the project. Additional reservoir data are being gathered during the demonstration phase to improve the accuracy of the reservoir model. The results of the demonstration will being closely monitored to provide a basis for improving the design of the HPAI field deployment plan. The results of the reservoir characterization field demonstration and monitoring program will be documented and widely disseminated to facilitate adoption of this technology by oil operators in the Permian Basin and elsewhere in the U.S.

Robert Loucks; Steve Ruppel; Julia Gale; Jon Holder; Jon Olsen; Deanna Combs; Dhiraj Dembla; Leonel Gomez

2003-12-10T23:59:59.000Z

128

PREDICTING TEMPERATURE BEHAVIOR IN CARBONATE ACIDIZING TREATMENTS  

E-Print Network (OSTI)

To increase the successful rate of acid stimulation, a method is required to diagnose the effectiveness of stimulation which will help us to improve stimulation design and decide whether future action, such as diversion, is needed. For this purpose, it is important to know how much acid enters each layer in a multilayer carbonate formation and if the low-permeability layer is treated well. This work develops a numerical model to determine the temperature behavior for both injection and flow-back situations. An important phenomenon in this process is the heat generated by reaction, affecting the temperature behavior significantly. The result of the thermal model showed significant temperature effects caused by reaction, providing a mechanism to quantitatively determine the acid flow profile. Based on this mechanism, a further inverse model can be developed to determine the acid distribution in each layer.

Tan, Xuehao

2009-05-01T23:59:59.000Z

129

Replica amplification of nucleic acid arrays  

DOE Patents (OSTI)

Disclosed are improved methods of making and using immobilized arrays of nucleic acids, particularly methods for producing replicas of such arrays. Included are methods for producing high density arrays of nucleic acids and replicas of such arrays, as well as methods for preserving the resolution of arrays through rounds of replication. Also included are methods which take advantage of the availability of replicas of arrays for increased sensitivity in detection of sequences on arrays. Improved methods of sequencing nucleic acids immobilized on arrays utilizing single copies of arrays and methods taking further advantage of the availability of replicas of arrays are disclosed. The improvements lead to higher fidelity and longer read lengths of sequences immobilized on arrays. Methods are also disclosed which improve the efficiency of multiplex PCR using arrays of immobilized nucleic acids.

Church, George M. (Brookline, MA); Mitra, Robi D. (Chestnut Hill, MA)

2010-08-31T23:59:59.000Z

130

NH Acid Rain Control Act (New Hampshire)  

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

The Act is implemented under New Hampshire's acid deposition control program established under the Rules to Control Air Pollution in Chapter Env-A 400. The goal of the Act is to reduce emissions...

131

The Hunter Region (Australia) Acid Rain Project  

Science Conference Proceedings (OSTI)

Field measurements for the Hunter Region Acid Rain Project were conducted as a major co-operative effort by the New South Wales State Pollution Control Commission, the Electricity Commission of New South Wales, and the University of Newcastle in ...

Howard A. Bridgman; Robert Rothwell; Christopher Pang Way; Peng-Hing Tio

1988-03-01T23:59:59.000Z

132

Phosphonic acid based ion exchange resins  

DOE Patents (OSTI)

An ion exchange resin is described for extracting metal ions from a liquid waste stream. An ion exchange resin is prepared by copolymerizing a vinylidene diphosphonic acid with styrene, acrylonitrile and divinylbenzene. 9 figures.

Horwitz, E.P.; Alexandratos, S.D.; Gatrone, R.C.; Chiarizia, R.

1994-01-25T23:59:59.000Z

133

The Spatial Analysis of Acid Precipitation Data  

Science Conference Proceedings (OSTI)

Kriging, an interpolation procedure that minimizes interpolation error and gives an accurate estimate of that error, is shown to be an appropriate objective analysis procedure for the study of spatial variability and structure in acid ...

Peter L. Finkelstein

1984-01-01T23:59:59.000Z

134

A Direct, Biomass-Based Synthesis of Benzoic Acid: Formic Acid-Mediated Deoxygenation of the Glucose-Derived Materials Quinic Acid and Shikimic Acid  

E-Print Network (OSTI)

R.G.B and J.A.E. ). Keywords: biomass carboxylic acids 10.1002/cssc.201000111 A Direct, Biomass-Based Synthesis ofaro- matic compounds from biomass resources could provide a

2010-01-01T23:59:59.000Z

135

Optimizing amino acid groupings for GPCR classification  

Science Conference Proceedings (OSTI)

Motivation: There is much interest in reducing the complexity inherent in the representation of the 20 standard amino acids within bioinformatics algorithms by developing a so-called reduced alphabet. Although there is no universally applicable ...

Matthew N. Davies; Andrew Secker; Alex A. Freitas; Edward Clark; Jon Timmis; Darren R. Flower

2008-09-01T23:59:59.000Z

136

Dynamic Protonation Equilibrium of Solvated Acetic Acid  

Science Conference Proceedings (OSTI)

For the first time, the dynamic protonation equilibrium between an amino acid side chain analogue and bulk water as well as the diffusion properties of the excess proton were successfully reproduced through unbiased computer simulations. During a 50 ns Q-HOP MD simulation, two different regimes of proton transfer were observed. Extended phases of frequent proton swapping between acetic acid and nearby water were separated by phases where the proton freely diffuses in the simulation box until it is captured again by acetic acid. The pKa of acetic acid was calculated around 3.0 based on the relative population of protonated and deprotonated states and the diffusion coefficient of excess proton was computed from the average mean squared displacement in the simulation. Both calculated values agree well with the experimental measurements.

Gu, Wei; Frigato, Tomaso; Straatsma, TP; Helms, Volkhard H.

2007-04-13T23:59:59.000Z

137

Thermodynamic Properties of Acetic Acid + Hydrocarbons ...  

Science Conference Proceedings (OSTI)

Thermodynamic Properties of Acetic Acid + Hydrocarbons Mixtures L. Negadi1,C,S, N. Ainous2, A. Negadi1, I. Mokbel2, A. Kaci3 and J. Jose2 ...

2006-07-20T23:59:59.000Z

138

A macromolecular delivery vehicle for protein-based vaccines: Acid ...  

... methane, was designed as the key acid-cleavable crosslinking monomer used to prepare acid-degradable protein-loaded microgels by inverse ...

139

Preferential Acidic, Alkaline and Neutral Solubility of Metallic...  

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

water is a neutral liquid, representative of exposure to surface water or groundwater. Acetic acid is a weak organic acid, and is an indicator of potential leaching during...

140

(2-ethylhexyl)-mono (2-ethylhexyl) ester Phosphonic acid  

Science Conference Proceedings (OSTI)

Comparison among different extractants, as (2-ethylhexyl)-mono (2-ethylhexyl) ester Phosphonic acid (P507), Secondary-octyl phenoxy acetic acid (CA-12) and ...

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


141

Synthesis of a New Asymmetric Dialkylphophinic Acid and Its ...  

Science Conference Proceedings (OSTI)

Besides, as to symmetrical dialkylphosphinic acids when the branched chain ... Di-(2,4,4'-trimethylpentyl)-phosphinic acid (main component of Cyanex 272).

142

Biologically produced acid precipitable polymeric lignin  

DOE Patents (OSTI)

A water soluble, acid precipitable polymeric degraded lignin (APPL), having a molecular weight of at least 12,000 daltons, and comprising, by percentage of total weight, at least three times the number of phenolic hydroxyl groups and carboxylic acid groups present in native lignin. The APPL may be modified by chemical oxidation and reduction to increase its phenolic hydroxyl content and reduce the number of its antioxidant inhibitory side chains, thereby improving antioxidant properties.

Crawford, Don L. (Moscow, ID); Pometto, III, Anthony L. (Moscow, ID)

1984-01-01T23:59:59.000Z

143

Primer on lead-acid storage batteries  

DOE Green Energy (OSTI)

This handbook was developed to help DOE facility contractors prevent accidents caused during operation and maintenance of lead-acid storage batteries. Major types of lead-acid storage batteries are discussed as well as their operation, application, selection, maintenance, and disposal (storage, transportation, as well). Safety hazards and precautions are discussed in the section on battery maintenance. References to industry standards are included for selection, maintenance, and disposal.

NONE

1995-09-01T23:59:59.000Z

144

Nitric acid requirement for treating sludge  

DOE Green Energy (OSTI)

The hydroxylamine nitrate (HAN) precipitate hydrolysis process produces sufficient oxidant (nitrate) such that the resulting blend of formic acid treated sludge and the aqueous product from hydrolysis (PHA) produces a melter feed of acceptable redox (i.e. Fe+2/Total Fe <0.33). With implementation of Late Washing (to reduce the nitrite content of the tetraphenyborate slurry produced during In-Tank Precipitation to 0.01M or less), HAN is no longer required during hydrolysis. As a result, the nitrate content of the melter feed will be reduced greater than an order-of-magnitude and the resulting melter feed produced will be too reducing. If formic acid treatment of the sludge is retained, it will be necessary to trim the melter feed with an oxidant to attain a proper redox. Rather than trimming the melter feed with an oxidant subsequent to the SRAT cycle in which formic acid is used to acidify the sludge, the Savannah River Technology Center (SRTC) has recommended this be accomplished by conversion to nitric acid addition to the Sludge Receipt and Adjustment Tank (SRAT) in place of formic acid (1). This memorandum specifies the stoichiometric bases for determining the nitric acid requirement for the SRAT.

Hsu, C.W.

1992-09-04T23:59:59.000Z

145

Effects of Acid Additives on Spent Acid Flowback through Carbonate Cores  

E-Print Network (OSTI)

Matrix acidizing is a well stimulation technique used to remove formation damage in the near wellbore region. But it comes with an associated set of challenges such as corrosion of the tubulars and iron precipitation in the formation. To counter these challenges, different chemicals, or additives, are added to the acid solution such as corrosion inhibitors and iron control agents. These additives may change the relative permeability of the spent acid, and formation wettability, and may either hinder or improve spent acid clean-up. Such effects of additives on the spent acid clean-up have not been documented. The aim of this research effort was to document the aforementioned change in the spent acid concentration (by using one additive at a time) before and after gas flowback. This was achieved by acidizing cores and creating wormholes halfway through them, then CT scanning them to observe the spent acid region. Later on, gas was flown through the core opposite to the direction of acid injection for 2 hours, and another CT scan was taken. The difference between the two CT scans was documented. Using a different additive each time, a series of such CT scans was obtained to develop an idea about whether the said additive was beneficial or detrimental to spent acid clean-up. It was found that the corrosion inhibitor FA-CI performed the best in terms of spent acid recovery after gas flowback for both Indiana Limestone and Texas Cream Chalk cores. Moreover, the corrosion inhibitor MI-CI was the worst for Indiana Limestone and the non-emulsifying agent M-NEA the worst for Texas Cream Chalk for spent acid recovery after gas flowback.

Nasir, Ehsaan Ahmad

2012-05-01T23:59:59.000Z

146

Acid Diversion in Carbonate Reservoirs Using Polymer-Based In-Situ Gelled Acids  

E-Print Network (OSTI)

Diversion in carbonates is more difficult than in sandstones because of the ability of acid to significantly increase the permeability in carbonates as it reacts in the pore spaces and flow channels of matrix. In-situ gelled acids that are based on polymers have been used in the field for several years and were the subject of many lab studies. An extensive literature survey reveals that there are conflicting opinions about using these acids. On one hand, these acids were used in the field with mixed results. Recent lab work indicated that these acids can cause damage under certain conditions. There is no agreement on when this system can be successfully applied in the field. Therefore, this study was conducted to better understand this acid system and determine factors that impact its performance. Lab test of polymer-based in-situ gelled acids reveal that polymer and other additives separate out of the acid when these acids are prepared in high salinity water. In coreflood tests, in-situ gelled acid formed a gel inside 20 long core samples, and the acid changed its direction several times. Unexpectantly, the core's permeability was reduced at low shear rate. Wormhole length increased as the shear rate was increased; while the diameter of the wormhole increased as the acid cumulative injected volume was increased. CT scan indicated the presence of gel residue inside and around the wormhole. Gel residue increased at low shear rates. Material balance on the cross-linker indicated that a significant amount of the crosslinker was retained in the core. Based on the results obtained from this study the in-situ gelled acids should be used only at low HCl concentrations (5 wt percent HCl). Acid should be prepared in low salinity water and the acid injection rate should be determined based on the expected shear rate in the formation. A core flood experiment is recommended to confirm optimum injected rate. Well flow back is needed to minimize the residual gel inside the formation. The data obtained in this study can be used as a guideline for injection rate selection.

Gomaa, Ahmed Mohamed Mohamed

2011-05-01T23:59:59.000Z

147

Energy densification of biomass-derived organic acids  

DOE Patents (OSTI)

A process for upgrading an organic acid includes neutralizing the organic acid to form a salt and thermally decomposing the resulting salt to form an energy densified product. In certain embodiments, the organic acid is levulinic acid. The process may further include upgrading the energy densified product by conversion to alcohol and subsequent dehydration.

Wheeler, M. Clayton

2013-01-29T23:59:59.000Z

148

Sulfuric acid-sulfur heat storage cycle  

DOE Patents (OSTI)

A method of storing heat is provided utilizing a chemical cycle which interconverts sulfuric acid and sulfur. The method can be used to levelize the energy obtained from intermittent heat sources, such as solar collectors. Dilute sulfuric acid is concentrated by evaporation of water, and the concentrated sulfuric acid is boiled and decomposed using intense heat from the heat source, forming sulfur dioxide and oxygen. The sulfur dioxide is reacted with water in a disproportionation reaction yielding dilute sulfuric acid, which is recycled, and elemental sulfur. The sulfur has substantial potential chemical energy and represents the storage of a significant portion of the energy obtained from the heat source. The sulfur is burned whenever required to release the stored energy. A particularly advantageous use of the heat storage method is in conjunction with a solar-powered facility which uses the Bunsen reaction in a water-splitting process. The energy storage method is used to levelize the availability of solar energy while some of the sulfur dioxide produced in the heat storage reactions is converted to sulfuric acid in the Bunsen reaction.

Norman, John H. (LaJolla, CA)

1983-12-20T23:59:59.000Z

149

Pakistan Vet. J., 24(3): 2004 EFFECTS OF ASCORBIC ACID AND ACETYLSALICYLIC ACID  

E-Print Network (OSTI)

Pakistan Vet. J., 24(3): 2004 109 EFFECTS OF ASCORBIC ACID AND ACETYLSALICYLIC ACID SUPPLEMENTATION Sciences, Lahore-54000, Pakistan ABSTRACT A total of 100, day-old broiler chicks were randomly divided production in the tropics. In Pakistan, temperature remains well beyond the higher side of thermoneutral zone

Paris-Sud XI, Université de

150

System for agitating the acid in a lead-acid battery  

DOE Patents (OSTI)

A system and method for agitating the acid in a large lead-sulfuric acid storage battery of the calcium type. An air-lift is utilized to provide the agitation. The air fed to the air-lift is humidified prior to being delivered to the air-lift.

Weintraub, Alvin (Schenectady, NY); MacCormack, Robert S. (Glenville, NY)

1987-01-01T23:59:59.000Z

151

Purification Or Organic Acids Using Anion Exchange Chromatography.  

DOE Patents (OSTI)

Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion exchange column and washing the column. The carboxylic anion is displaced as carboxylic acid by washing the resin with a strong inorganic anion. This method is effective in removing organic carboxylic acids and amino acids from a variety of industrial sources, including fermentation broths, hydrolysates, and waste streams.

Ponnampalam; Elankovan (Okemos, MI)

2001-09-04T23:59:59.000Z

152

Nucleic Acid Standards - Standard Ref. Frame  

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

Standard Reference Standard Reference Standard Reference Frame Supplemental Information Ideal Geometries X-PLOR Parameters Valence Geometries RNA Ontology Consortium mmCIF Resources PDBML Resources A Standard Reference Frame for the Description of Nucleic Acid Base-pair Geometry A common point of reference is needed to describe the three-dimensional arrangements of bases and base pairs in nucleic acid structures. [1]. For example, parts of a structure, which appear "normal" according to one computational scheme, may be highly unusual according to another and vice versa. It is thus difficult to carry out comprehensive comparisons of nucleic acid structures and to pinpoint unique conformational features in individual structures. In order to resolve these issues, a group of

153

Electrostatic precipitation of condensed acid mist  

Science Conference Proceedings (OSTI)

The purpose of this project is to develop and demonstrate a compact, wet electrostatic collector for condensed acid mist in power plant flue gas. The following are project objectives: (1) fabrication of laboratory-version of the WESP; (2) optimization of the WESP performance through laboratory tests with a non-volatile simulant aerosol having a size distribution similar to the acid mist; (3) demonstration of adequate collection of actual acid mist in a pilot coal combustion facility under conditions simulating full-scale power plant burning high-sulfur coal; (4) development of computer model of the WESP process must be developed to assist in the process optimization, interpretation of test results, and extrapolation to full scale; and (5) solicitation of utility participation in a follow-on demonstration of the WESP concept at a full-scale power plant. The WESP fabrication, laboratory and pilot combustor testing, and computer modeling is discussed. 5 refs., 5 figs.

Not Available

1989-01-01T23:59:59.000Z

154

Photoenhanced anaerobic digestion of organic acids  

DOE Patents (OSTI)

A process is described for rapid conversion of organic acids and alcohols in anaerobic digesters into hydrogen and carbon dioxide, the optimal precursor substrates for production of methane. The process includes addition of photosynthetic bacteria to the digester and exposure of the bacteria to radiant energy (e.g., solar energy). The process also increases the pH stability of the digester to prevent failure of the digester. Preferred substrates for photosynthetic bacteria are the organic acid and alcohol waste products of fermentative bacteria. In mixed culture with methanogenic bacteria or in defined co-culture with non-aceticlastic methanogenic bacteria, photosynthetic bacteria are capable of facilitating the conversion of organic acids and alcohols into methane with low levels of light energy input. 8 figs.

Weaver, P.F.

1989-08-25T23:59:59.000Z

155

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer were selected from the class consisting of ethylene and polyethylene glycols, propylene and polypropylene glycols, P-dioxanone, 1,5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide where the high molecular weight polyethylene oxide is present in the range of from about 2% by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures to an agricultural site is also disclosed.

Bonsignore, P.V.; Coleman, R.D.

1994-11-01T23:59:59.000Z

156

Photoenhanced anaerobic digestion of organic acids  

DOE Patents (OSTI)

A process is described for rapid conversion of organic acids and alcohols anaerobic digesters into hydrogen and carbon dioxide, the optimal precursor substrates for production of methane. The process includes addition of photosynthetic bacteria to the digester and exposure of the bacteria to radiant energy (e.g., solar energy). The process also increases the pH stability of the digester to prevent failure of the digester. Preferred substrates for photosynthetic bacteria are the organic acid and alcohol waste products of fermentative bacteria. In mixed culture with methanogenic bacteria or in defined co-culture with non-aceticlastic methanogenic bacteria, photosynthetic bacteria are capable of facilitating the conversion or organic acids and alcohols into methane with low levels of light energy input.

Weaver, Paul F. (Golden, CO)

1990-01-01T23:59:59.000Z

157

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene and polyethylane glycols (PVB 6/22/90), propylene and and polypropylene (PVB 6/22/90) glycols, P-dioxanone, 1, 5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2% by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.

Bonsignore, P.V.; Coleman, R.D.

1990-06-26T23:59:59.000Z

158

IMPROVED PROCESSES TO REMOVE NAPHTHENIC ACIDS  

SciTech Connect

In the first year of this project, we have established our experimental and theoretical methodologies for studies of the catalytic decarboxylation process. We have developed both glass and stainless steel micro batch type reactors for the fast screening of various catalysts with reaction substrates of model carboxylic acid compounds and crude oil samples. We also developed novel product analysis methods such as GC analyses for organic acids and gaseous products; and TAN measurements for crude oil. Our research revealed the effectiveness of several solid catalysts such as NA-Cat-1 and NA-Cat-2 for the catalytic decarboxylation of model compounds; and NA-Cat-5{approx}NA-Cat-9 for the acid removal from crude oil. Our theoretical calculations propose a three-step concerted oxidative decarboxylation mechanism for the NA-Cat-1 catalyst.

Aihua Zhang; Qisheng Ma; William A. Goddard; Yongchun Tang

2004-04-28T23:59:59.000Z

159

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene and polyethylene glycols, propylene and polypropylene glycols, P-dioxanone, 1,5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2% by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.

Bonsignore, Patrick V. (Joliet, IL); Coleman, Robert D. (Wheaton, IL)

1994-01-01T23:59:59.000Z

160

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene glycol, propylene glycol, P-dioxanone, 1,5 dioxepan-2-one, 1,4-oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2 by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.

Bonsignore, Patrick V. (Joliet, IL); Coleman, Robert D. (Wheaton, IL)

1996-01-01T23:59:59.000Z

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


161

u.s. Dl!PARThIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERMINATION  

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

PARThIENT OF ENERGY PARThIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERMINATION Page 1 of2 RECIPIENT: University of Oregon STATE: OR PROJECT TITLE: Vapor Transport Deposition for Thin Film III-V Photovoltaics fo'unding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FOA..()()()()654 DE-EEOOO5957 GF0-0005957·0Q1 Based on my review of the information concerning the proposed action, as NI<:PA Compliance Officer (authorized under DOE Order 451.1A), I have made the following determination : ex, EA, EIS APPENDIX AND NUMBER: Description: A9 Information gathering, analysis, and dissemination Information gathering (including, but not limited to, literature surveys, inventories, site visits, and audits). data analysis (including, but not limited to, computer modeling), document preparation

162

u.s. Dl!PAR1'M:ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER  

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

PAR1'M:ENT OF ENERGY PAR1'M:ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERlIIINATION RECIPIENT :University of California San Diego PROJECT TITL.E: San Diego Center for Algae Biotechnology Page 1 of2 STATE: CA Funding Opportunity Announcement Number Procurement Instnlment Number NEPA Control Number em Number EEOOO3142 GF0-10-582 EE3142 Based on my review ortbe information concerning the proposed action, as NEPA Compliance Officer (authorukd under DOE Order 451.1A), I have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: 83.6 Siting . construction (or modification), operation, and deoommissioning of facilities for indoor bench-scale research projects and conventional laboratory operations (for example. preparation of chemical standards and sample analYSIS):

163

u.s. Dl!PARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER Nl!PA DETERMINATION  

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

PARTMENT OF ENERGY PARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER Nl!PA DETERMINATION RECIPIENT:WA Dept of Commerce Page 1 of3 STATE: WA PROJECT TITLE: SEP ARRA · WSU Anaerobic Digester - Nutrient Recovery Technology - Vander Haak Dairy Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number EEOOOO139 GF0-0000139-040 0 Based on my review of the Information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 4S1.1A), I have made tbe following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: A9 Information gathering, analysis, and dissemination Information gathering (including, but not limited to, literature surveys, inventories, site visils, and audits), data analysis (including

164

AHDC FACT SHEET 1 DL-1030 5/06 TRANSTRACHEAL WASH PROCEDURE  

E-Print Network (OSTI)

of Veterinary Medicine, Cornell University In Partnership with the NYS Dept of Ag & Markets US Postal Service enough, coughing by the animal may flip the tip toward the larynx, resulting in a pharyngeal wash

Keinan, Alon

165

3.1.1.2 Feed Processing and Handling DL2 Final Report  

DOE Green Energy (OSTI)

This milestone report is the deliverable for our Feed Processing and Handling project. It includes results of wet biomass feedstock analysis, slurry pumping information, fungal processing to produce a lignin-rich biorefinery residue and two subcontracted efforts to quantify the amount of wet biomass feedstocks currently available within the corn processing and paper processing industries.

Elliott, Douglas C.; Magnuson, Jon K.; Wend, Christopher F.

2006-09-30T23:59:59.000Z

166

REACTIVITY LIFETIME. TEST RESULTS DL-S-225(T-612118A). Section I, Second Performance  

SciTech Connect

The performance, reliability, stability, and reactivity lifetime variations of the Shippingport PWR are determined under normal steady state conditions. These characteristics are studied over a period of 758 EFPH, at a power level of about 60 Mw(e). Flux-tilt corrections and plant operations during this time are described. (T.F.H.)

1959-03-01T23:59:59.000Z

167

Query Answering over DL ABoxes: How to Pick the Relevant Symbols  

E-Print Network (OSTI)

in ALCF. Some longer proofs have been moved to the appendix. 2 Preliminaries We consider various DLs. An analogous statement fails, e.g., for ALCF. To see this, take T = { ( 1 r) A} and = {r}. Then A is IQ thus also CQ-) relevance, and a NExpTimeNP upper bound; for ALCF, we prove undecidability of IQ

Wolter, Frank

168

Query Answering over DL ABoxes: How to Pick the Relevant Symbols  

E-Print Network (OSTI)

is decidable in ALC and ALCI, but relevance regarding instance queries is unde- cidable in ALCF and relevance.g., for ALCF. To see this, take T = { ( 1 r) A} and = {r}. Then A is IQ- and CQ-relevant with UNA due of IQ- (and thus also CQ-) relevance, and a NExpTimeNP upper bound; for ALCF, we prove undecidability

Lutz, Carsten

169

Ontology-driven relational query formulation using the semantic and assertional capabilities of OWL-DL  

Science Conference Proceedings (OSTI)

This work investigates the extent to which domain knowledge, expressed in a domain ontology, can assist end-users in formulating relational queries that can be executed over a complex relational database. In this regard, an ontology-driven query formulation ... Keywords: Data retrieval, Domain knowledge, Information systems, Ontology, Query formulation

K. Munir; M. Odeh; R. Mcclatchey

2012-11-01T23:59:59.000Z

170

LES ACIDES GRAS TRANS DU BEURRE II.  

E-Print Network (OSTI)

origine est essentiellement endogène car les aliments naturels habituellement distribués aux vaches) au cours de l'hydro- génation biologique portant sur les acides oléique, linoléique et linolénique

Recanati, Catherine

171

Separators for valve regulated lead acid batteries  

Science Conference Proceedings (OSTI)

This paper reviews some aspects of the past history of the valve regulated lead acid (VRLA) battery in relationship to microglass separators that have been used from the conception of VRLA technology. It also focuses on some aspects of compression properties of the separator.

Zguris, G.C. [Hollingsworth & Vose Co., West Groton, MT (United States)

1995-01-01T23:59:59.000Z

172

Method for the production of dicarboxylic acids  

DOE Patents (OSTI)

The present invention is an economical fermentation method for the production of carboxylic acids comprising the steps of (a) inoculating a medium having a carbon source with a carboxylic acid-producing organism; (b) incubating the carboxylic acid-producing organism in an aerobic atmosphere to promote rapid growth of the organism thereby increasing the biomass of the organism; (c) controllably releasing oxygen to maintain the aerobic atmosphere; (d) controllably feeding the organism having increased biomass with a solution containing the carbon source to maintain the concentration of the carbon source within the medium of about 0.5 g/l up to about 1 g/l; (e) depriving the aerobic atmosphere of oxygen to produce an anaerobic atmosphere to cause the organism to undergo anaerobic metabolism; (f) controllably feeding the organism having increased biomass a solution containing the carbon source to maintain the concentration of the carbon source within the medium of {>=}1 g/l; and (g) converting the carbon source to carboxylic acids using the anaerobic metabolism of the organism. 7 figs.

Nghiem, N.P.; Donnelly, M.; Millard, C.S.; Stols, L.

1999-02-09T23:59:59.000Z

173

Method for the production of dicarboxylic acids  

DOE Patents (OSTI)

The present invention is an economical fermentation method for the production of carboxylic acids comprising the steps of a) inoculating a medium having a carbon source with a carboxylic acid-producing organism; b) incubating the carboxylic acid-producing organism in an aerobic atmosphere to promote rapid growth of the organism thereby increasing the biomass of the organism; c) controllably releasing oxygen to maintain the aerobic atmosphere; d) controllably feeding the organism having increased biomass with a solution containing the carbon source to maintain the concentration of the carbon source within the medium of about 0.5 g/L up to about 1 g/L; e) depriving the aerobic atmosphere of oxygen to produce an anaerobic atmosphere to cause the organism to undergo anaerobic metabolism; f) controllably feeding the organism having increased biomass a solution containing the carbon source to maintain the concentration of the carbon source within the medium of .gtoreq.1 g/L; and g) converting the carbon source to carboxylic acids using the anaerobic metabolism of the organism.

Nghiem, Nhuan Phu (Knoxville, TN); Donnelly, Mark (Warrenville, IL); Millard, Cynthia S. (Plainfield, IL); Stols, Lucy (Woodridge, IL)

1999-01-01T23:59:59.000Z

174

Improved Processes to Remove Naphthenic Acids  

Science Conference Proceedings (OSTI)

In the past three years, we followed the work plan as we suggested in the proposal and made every efforts to fulfill the project objectives. Based on our large amount of creative and productive work, including both of experimental and theoretic aspects, we received important technical breakthrough on naphthenic acid removal process and obtained deep insight on catalytic decarboxylation chemistry. In detail, we established an integrated methodology to serve for all of the experimental and theoretical work. Our experimental investigation results in discovery of four type effective catalysts to the reaction of decarboxylation of model carboxylic acid compounds. The adsorption experiment revealed the effectiveness of several solid materials to naphthenic acid adsorption and acidity reduction of crude oil, which can be either natural minerals or synthesized materials. The test with crude oil also received promising results, which can be potentially developed into a practical process for oil industry. The theoretical work predicted several possible catalytic decarboxylation mechanisms that would govern the decarboxylation pathways depending on the type of catalysts being used. The calculation for reaction activation energy was in good agreement with our experimental measurements.

Aihua Zhang; Qisheng Ma; Kangshi Wang; Yongchun Tang; William A. Goddard

2005-12-09T23:59:59.000Z

175

Corrosion free phosphoric acid fuel cell  

DOE Patents (OSTI)

A phosphoric acid fuel cell with an electrolyte fuel system which supplies electrolyte via a wick disposed adjacent a cathode to an absorbent matrix which transports the electrolyte to portions of the cathode and an anode which overlaps the cathode on all sides to prevent corrosion within the cell.

Wright, Maynard K. (Bethel Park, PA)

1990-01-01T23:59:59.000Z

176

Sulfuric acid thermoelectrochemical system and method  

DOE Patents (OSTI)

A thermoelectrochemical system in which an electrical current is generated between a cathode immersed in a concentrated sulfuric acid solution and an anode immersed in an aqueous buffer solution of sodium bisulfate and sodium sulfate. Reactants consumed at the electrodes during the electrochemical reaction are thermochemically regenerated and recycled to the electrodes to provide continuous operation of the system.

Ludwig, Frank A. (Rancho Palos Verdes, CA)

1989-01-01T23:59:59.000Z

177

Therapeutic efficacy of dimercaptosuccinic acid and thiamine/ascorbic acid on lead intoxication in rats  

SciTech Connect

Thiamine, folic acid, pyridoxine and ascorbic acid either individually or in combination have been proven to be effective in reducing the toxic manifestations of lead and in enhancing the antidotal efficacy of CaNa{sub 2}EDTA. In a recent report from the authors' laboratory, it was observed that given combination of thiamine and ascorbic acid with thiol chelators improved the ability of the animals to excrete lead thereby reducing body lead burden. In view of the beneficial effect of these two vitamins, it was considered of interest to evaluate their potential to modify the prophylactic action of DMS in lead intoxication in rat after repeated administration.

Tandon, S.K.; Flora, S.J.S. (Industrial Toxicology Research Centre, Lucknow (India))

1989-11-01T23:59:59.000Z

178

A First Look at Yeast Fatty Acid Synthase  

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

A First Look at Yeast Fatty Acid Synthase Print A First Look at Yeast Fatty Acid Synthase Print Fatty acids are the major constituents of eukaryotic and bacterial cellular membranes. They are used for functionally important post-translational protein modifications, and chains of fatty acids are the main storage compartments of an organism's chemical energy. Fatty acid synthesis is carried out by fatty acid sythase (FAS), which catalyzes cycles of multistep chemical reactions that are essentially the same in all organisms. FAS uses one acetyl-coenzyme A (CoA) and seven malonyl-CoA molecules to synthesize the 16-carbon palmitic acid, the most abundant fatty acid in eukaryotes. Now, for the first time, a group of researchers has determined the atomic structure of yeast Saccharomyces cerevisiae FAS derived from two crystals of the enzyme, using data collected at ALS Beamlines 8.2.1 and 8.2.2, as well as other synchrotron facilities.

179

Acid-catalyzed dehydrogenation of amine-boranes  

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

Acid-catalyzed dehydrogenation of amine-boranes Acid-catalyzed dehydrogenation of amine-boranes Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. June 25, 2013 Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. Available for thumbnail of Feynman Center (505) 665-9090 Email Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. The method generates hydrogen and produces a solid polymeric product. The method of dehydrogenating amine-boranes may be used to generate hydrogen for power generation sources such as fuel cells. U.S. Patent No.: 7,645,902 (DOE S-104,909) Patent Application Filing Date: June 22, 2006

180

A First Look at Yeast Fatty Acid Synthase  

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

A First Look at Yeast Fatty Acid Synthase Print A First Look at Yeast Fatty Acid Synthase Print Fatty acids are the major constituents of eukaryotic and bacterial cellular membranes. They are used for functionally important post-translational protein modifications, and chains of fatty acids are the main storage compartments of an organism's chemical energy. Fatty acid synthesis is carried out by fatty acid sythase (FAS), which catalyzes cycles of multistep chemical reactions that are essentially the same in all organisms. FAS uses one acetyl-coenzyme A (CoA) and seven malonyl-CoA molecules to synthesize the 16-carbon palmitic acid, the most abundant fatty acid in eukaryotes. Now, for the first time, a group of researchers has determined the atomic structure of yeast Saccharomyces cerevisiae FAS derived from two crystals of the enzyme, using data collected at ALS Beamlines 8.2.1 and 8.2.2, as well as other synchrotron facilities.

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


181

trans Fatty acid content of foods in China  

Science Conference Proceedings (OSTI)

Growing evidence that dietary consumption of trans fatty acid (TFA) increases the risk of cardiovascular disease has made TFA a hot topic among people, food industries, and government officials in China. trans Fatty acid content of foods in China

182

Method for identifying and quantifying nucleic acid sequence aberrations  

DOE Patents (OSTI)

A method for detecting nucleic acid sequence aberrations by detecting nucleic acid sequences having both a first and a second nucleic acid sequence type, the presence of the first and second sequence type on the same nucleic acid sequence indicating the presence of a nucleic acid sequence aberration. The method uses a first hybridization probe which includes a nucleic acid sequence that is complementary to a first sequence type and a first complexing agent capable of attaching to a second complexing agent and a second hybridization probe which includes a nucleic acid sequence that selectively hybridizes to the second nucleic acid sequence type over the first sequence type and includes a detectable marker for detecting the second hybridization probe.

Lucas, Joe N. (San Ramon, CA); Straume, Tore (Tracy, CA); Bogen, Kenneth T. (Walnut Creek, CA)

1998-01-01T23:59:59.000Z

183

Pressure Acid Leaching Vanadium from Stone coal - Programmaster ...  

Science Conference Proceedings (OSTI)

Vanadium extraction from stone-coal was investigated by pressure acid ... The results show that with the leaching time for 3~4h, temperature at 150?, sulfuric acid consumption of 25%~30%, ... Calcium Reductants A historical review.

184

Lubrication from mixture of boric acid with oils and greases  

DOE Patents (OSTI)

Lubricating compositions including crystalline boric acid and a base lubricant selected from oils, greases and the like. The lubricity of conventional oils and greases can also be improved by adding concentrates of boric acid.

Erdemir, Ali (Naperville, IL)

1995-01-01T23:59:59.000Z

185

Nucleic acid based fluorescent sensor for copper detection  

DOE Patents (OSTI)

A nucleic acid enzyme responsive to copper, comprising an oligonucleotide comprising a nucleotide sequence of SEQ ID NO:1, wherein the nucleic acid enzyme is not self-cleaving.

Lu, Yi; Liu, Juewen

2013-04-02T23:59:59.000Z

186

Improved Processes to Remove Naphthenic Acids  

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

Improved Processes to Remove Naphthenic Acids Improved Processes to Remove Naphthenic Acids Final Technical Report (From October 1, 2002 to September 30, 2005) Principle Authors Aihua Zhang, Qisheng Ma, Kangshi Wang, Yongchun Tang (co-PI), William A. Goddard (PI), Date Report was issued: December 9, 2005 DOE Award number: DE-FC26-02NT15383 Name and Address of Submitting Organization California Institute of Technology 1200 East California Blvd., Pasadena, CA91125 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any

187

Nucleic Acid Standards - Sugar and Phosphate Constituents  

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

Sugar and Phosphate Constituents Sugar and Phosphate Constituents The following tables contain the complete references for the structures used in a statistical survey of well-refined mononucleoside, mononucleotide, dinucleoside monophosphate, and trinucleoside diphosphate crystal structures found in the Cambridge Structural Database and the Nucleic Acid Database that appeared in The Journal of the American Chemical Society (Anke Gelbin, Bohdan Schneider, Lester Clowney, Shu-Hsin Hsieh, Wilma K. Olson, and Helen M. Berman. "Geometric Parameters in Nucleic Acids: Sugar Phosphate Constituents" (1996) 118, 519-529.) Table 1: References for Mononucleoside and Mononucleotide Structures Table 2: References for Dinucleoside Monophosphate and Trinucleoside Diphosphate Structures The following tables are summaries of the bond lengths, angles, and torsion

188

Sulfate and acid resistant concrete and mortar  

DOE Patents (OSTI)

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance. 6 figs.

Liskowitz, J.W.; Wecharatana, M.; Jaturapitakkul, C.; Cerkanowicz, A.E.

1998-06-30T23:59:59.000Z

189

Closure device for lead-acid batteries  

DOE Patents (OSTI)

A closure device for lead-acid batteries includes a filter of granulated activated carbon treated to be hydrophobic combined with means for preventing explosion of emitted hydrogen and oxygen gas. The explosion prevention means includes a vertical open-end tube within the closure housing for maintaining a liquid level above side wall openings in an adjacent closed end tube. Gases vent from the battery through a nozzle directed inside the closed end tube against an impingement surface to remove acid droplets. The gases then flow through the side wall openings and the liquid level to quench any possible ignition prior to entering the activated carbon filter. A wick in the activated carbon filter conducts condensed liquid back to the closure housing to replenish the liquid level limited by the open-end tube.

Ledjeff, Konstantin (Schwalbach, DE)

1983-01-01T23:59:59.000Z

190

Lightweight, durable lead-acid batteries  

Science Conference Proceedings (OSTI)

A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).

Lara-Curzio, Edgar (Lenoir City, TN); An, Ke (Knoxville, TX); Kiggans, Jr., James O. (Oak Ridge, TN); Dudney, Nancy J. (Knoxville, TN); Contescu, Cristian I. (Knoxville, TN); Baker, Frederick S. (Oak Ridge, TN); Armstrong, Beth L. (Clinton, TN)

2011-09-13T23:59:59.000Z

191

Lightweight, durable lead-acid batteries  

DOE Patents (OSTI)

A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).

Lara-Curzio, Edgar; An, Ke; Kiggans, Jr., James O; Dudney, Nancy J; Contescu, Cristian I; Baker, Frederick S; Armstrong, Beth L

2013-05-21T23:59:59.000Z

192

Sulfate and acid resistant concrete and mortar  

DOE Patents (OSTI)

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance.

Liskowitz, John W. (Belle Mead, NJ); Wecharatana, Methi (Parsippany, NJ); Jaturapitakkul, Chai (Bangkok, TH); Cerkanowicz, deceased, Anthony E. (late of Livingston, NJ)

1998-01-01T23:59:59.000Z

193

PROCESS FOR PRODUCING ALKYL ORTHOPHOSPHORIC ACID EXTRACTANTS  

DOE Patents (OSTI)

A process is given for producing superior alkyl orthophosphoric acid extractants for use in solvent extraction methods to recover and purify various metals such as uranium and vanadium. The process comprises slurrying P/sub 2/O/ sub 5/ in a solvent diluent such as kerosene, benzene, isopropyl ether, and the like. An alipbatic alcohol having from nine to seventeen carbon atoms, and w- hcrein ihc OH group is situated inward of the terminal carbon atoms, is added to the slurry while the reaction temperature is mainiained below 60 deg C. The alcohol is added in the mole ratio of about 2 to l, alcohol to P/sub 2/O/sub 5/. A pyrophosphate reaotion product is formed in the slurry-alcohol mixture. Subsequently, the pyrophosphate reaction product is hydrolyzed with dilute mineral acid to produce the desired alkyl orthophosphoric aeid extractant. The extraetant may then be separated and utilized in metal-recovery, solvent- extraction processes. (AEC)

Grinstead, R.R.

1962-01-23T23:59:59.000Z

194

Acid treatment removes zinc sulfide scale restriction  

Science Conference Proceedings (OSTI)

This paper reports that removal of zinc sulfide (ZnS) scale with acid restored an offshore Louisiana well's production to original rates. The zinc sulfide scale was determined to be in the near well bore area. The selected acid had been proven to control iron sulfide (FeS) scales in sour wells without causing harm to surface production equipment, tubing, and other downhole hardware. The successful removal of the blockage re-established previous production rates with a 105% increase in flowing tubing pressure. On production for a number of months, a high rate, high-pressure offshore well was experiencing unusually rapid pressure and rate declines. A small sample of the restrictive material was obtained during the wire line operations. The well was subsequently shut in while a laboratory analysis determined that zinc sulfide was the major component of the obstruction.

Biggs, K. (Kerr McGee Corp., Lafayette, LA (US)); Allison, D. (Otis Engineering Corp., Lafayette, LA (US)); Ford, W.G.F. (Halliburton Co., Duncan, OK (United States))

1992-08-31T23:59:59.000Z

195

Nucleic acids, compositions and uses thereof  

DOE Patents (OSTI)

The subject invention provides at least one nucleic acid sequence encoding an aldouronate-utilization regulon isolated from Paenibacillus sp. strain JDR-2, a bacterium which efficiently utilizes xylan and metabolizes aldouronates (methylglucuronoxylosaccharides). The subject invention also provides a means for providing a coordinately regulated process in which xylan depolymerization and product assimilation are coupled in Paenibacillus sp. strain JDR-2 to provide a favorable system for the conversion of lignocellulosic biomass to biobased products. Additionally, the nucleic acid sequences encoding the aldouronate-utilization regulon can be used to transform other bacteria to form organisms capable of producing a desired product (e.g., ethanol, 1-butanol, acetoin, 2,3-butanediol, 1,3-propanediol, succinate, lactate, acetate, malate or alanine) from lignocellulosic biomass.

Preston, III, James F. (Micanopy, FL); Chow, Virginia (Gainesville, FL); Nong, Guang (Gainesville, FL); Rice, John D. (Gainesville, FL); St. John, Franz J. (Baltimore, MD)

2012-02-21T23:59:59.000Z

196

IMPROVED PROCESSES TO REMOVE NAPHTHENIC ACIDS  

Science Conference Proceedings (OSTI)

In the second year of this project, we continued our effort to develop low temperature decarboxylation catalysts and investigate the behavior of these catalysts at different reaction conditions. We conducted a large number of dynamic measurements with crude oil and model compounds to obtain the information at different reaction stages, which was scheduled as the Task2 in our work plan. We developed a novel adsorption method to remove naphthenic acid from crude oil using naturally occurring materials such as clays. Our results show promise as an industrial application. The theoretical modeling proposed several possible reaction pathways and predicted the reactivity depending on the catalysts employed. From all of these studies, we obtained more comprehensive understanding about catalytic decarboxylation and oil upgrading based on the naphthenic acid removal concept.

Aihua Zhang; Qisheng Ma; Kangshi Wang, William A. Goddard, Yongchun Tang

2005-05-05T23:59:59.000Z

197

Alkaline earth cation extraction from acid solution  

DOE Patents (OSTI)

An extractant medium for extracting alkaline earth cations from an aqueous acidic sample solution is described as are a method and apparatus for using the same. The separation medium is free of diluent, free-flowing and particulate, and comprises a Crown ether that is a 4,4'(5')[C.sub.4 -C.sub.8 -alkylcyclohexano]18-Crown-6 dispersed on an inert substrate material.

Dietz, Mark (Elmhurst, IL); Horwitz, E. Philip (Naperville, IL)

2003-01-01T23:59:59.000Z

198

Botanical Oils Containing Omega-3 and Omega-6 Fatty Acids  

Science Conference Proceedings (OSTI)

Botanical Oils Containing Omega-3 and Omega-6 Fatty Acids. Summary: The Chemical Sciences Division has developed ...

2012-10-22T23:59:59.000Z

199

Method for removing fluoride contamination from nitric acid  

DOE Patents (OSTI)

Fluoride ions are removed from nitric acid solution by contacting the vaporized solution with alumina or zirconium.

Pruett, David J. (Knoxville, TN); Howerton, William B. (Kingston, TN)

1982-01-01T23:59:59.000Z

200

Process for chemical reaction of amino acids and amides ...  

Process for chemical reaction of amino acids and amides yielding selective conversion products United States Patent Application

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


201

Heterogeneous organic acid uptake on soot surfaces  

E-Print Network (OSTI)

Atmospheric particulates have been known to act as cloud condensation nuclei (CCN) and therefore their presence can indirectly affect important processes such as global radiation balance through cloud formation. Soot particles are well known to be atmospheric constituents, but the hydrophobic nature of fresh soot likely prohibits them from encouraging cloud development. Soot aged through contact with oxygenated organic compounds may become hydrophilic enough to promote water uptake. In this study I have observed the interaction between a number of carboxylic acids and soot from different fuel sources and formation mechanisms. A low pressure fast flow reactor was used to control the contact between the solid phase soot and gas phase organics, while chemical ionization-mass spectrometry was utilized to monitor concentrations of gas phase organics. Most acids irreversibly deposited on the soot surfaces, and the uptake coefficient was measured in the wide range of 9.0 x 10-4 to 1.0 x 10-1. The Brunauer, Emmett, and Teller (BET) surface areas of the soots were measured and the soot bulk and surface chemical compositions were investigated with Fourier transform infrared (FTIR) spectroscopy and attenuated total reflection (ATR) spectroscopy to help explain differences in uptake. By comparing the mono and dicarboxylic acids and the information gathered from soot physiochemical properties I have discussed possible uptake mechanisms.

Levitt, Nicholas Paul

2007-05-01T23:59:59.000Z

202

Marine Oil Fatty Acid Profile Laboratory Proficiency Testing Program  

Science Conference Proceedings (OSTI)

Lab Proficiency Testing provider for Marine Products and Marine Oil Fatty Acid Profile to test Fatty Acid Composition with AOCS methods Ce 1b-89 or Ce 1i-07. Marine Oil Fatty Acid Profile Laboratory Proficiency Testing Program Laboratory Proficiency Prog

203

Process for the extraction of strontium from acidic solutions  

DOE Patents (OSTI)

The invention is a process for selectively extracting strontium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant solution is a macrocyclic polyether in an aliphatic hydrocarbon diluent containing a phase modifier. The process will selectively extract strontium values from nitric acid solutions which are up to 6 molar in nitric acid.

Horwitz, E.P.; Dietz, M.L.

1993-01-01T23:59:59.000Z

204

Experimental Study of Acid Fracture Conductivity of Austin Chalk Formation  

E-Print Network (OSTI)

Acid fracture conductivity and the effect of key variables in the etching process during acid fracturing can be assessed at the laboratory scale. This is accomplished by using an experimental apparatus that simulates acid injection fluxes comparable to those in actual acid fracture treatments. After acid etching, fracture conductivity is measured at different closure stresses. This research work presents a systematic study to investigate the effect of temperature, rock-acid contact time and initial condition of the fracture surfaces on acid fracture conductivity in the Austin Chalk formation. While temperature and rock-acid contact are variables normally studied in fracture conductivity tests, the effect of the initial condition of the fracture surface has not been extensively investigated. The experimental results showed that there is no significant difference in acid fracture conductivity at high closure stress using smooth or rough fracture surfaces. In addition, we analyzed the mechanisms of acid etching and resulting conductivity creation in the two types of fracture surfaces studied by using surface profiles. For smooth surfaces, the mechanism of conductivity creation seems connected to uneven etching of the rock and roughness generation. For rough surfaces, acid conductivity is related to smoothing and deepening of the initial features on the sample surface than by creating more roughness. Finally, we compared the experimental results with Nirode-Kruk correlation for acid fracture conductivity.

Nino Penaloza, Andrea

2013-05-01T23:59:59.000Z

205

Method for nucleic acid isolation using supercritical fluids  

DOE Patents (OSTI)

A method for detecting the presence of a microorganism in an environmental sample involves contacting the sample with a supercritical fluid to isolate nucleic acid from the microorganism, then detecting the presence of a particular sequence within the isolated nucleic acid. The nucleic acid may optionally be subjected to further purification.

Nivens, David E. (11912 Kingsgate Rd., Knoxville, TN 37911); Applegate, Bruce M. (3700 Sutherland Ave. #Q2, Knoxville, TN 37911)

1999-01-01T23:59:59.000Z

206

Production of methyl-vinyl ketone from levulinic acid  

DOE Patents (OSTI)

A method for converting levulinic acid to methyl vinyl ketone is described. The method includes the steps of reacting an aqueous solution of levulinic acid, over an acid catalyst, at a temperature of from room temperature to about 1100 K. Methyl vinyl ketone is thereby formed.

Dumesic, James A. (Verona, WI); West; Ryan M. (Madison, WI)

2011-06-14T23:59:59.000Z

207

Author's personal copy Groundtruthing and potential for predicting acid deposition  

E-Print Network (OSTI)

commonly can complex aluminum in acid streams (e.g., Nordstrom and May 1996; Lindsay and Walthall 1996L sample was filtered (0.45 m) and acidified with 3 drops of trace metal grade nitric acid (FA flowpaths in fractured rock, pH can drop, and the acid dissolution of kaolinite can release Al to streams

Kirby, Carl S.

208

Process for the extraction of strontium from acidic solutions  

DOE Patents (OSTI)

The invention is a process for selectively extracting strontium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant solution is a macrocyclic polyether in an aliphatic hydrocarbon diluent containing a phase modifier. The process will selectively extract strontium values from nitric acid solutions which are up to 6 molar in nitric acid. 4 figs.

Horwitz, E.P.; Dietz, M.L.

1994-09-06T23:59:59.000Z

209

Silated acidic copolymers for nanoimprint lithography on flexible plastic substrates  

Science Conference Proceedings (OSTI)

A new silated acidic polymer was developed as the resist for nanoimprint lithography on flexible substrates. This polymer was synthesized from methylmethacrylate, n-butylacrylate, methacrylic acid and 3-[tris(trimethylsiloxy)silyl]propyl methacrylate ... Keywords: Flexible plastic substrate, Nanoimprint lithography, Reactive ion etching resistability, Silated acidic polymer

Wen-chang Liao; Steve Lien-Chung Hsu; Jui-Chen Lin

2007-01-01T23:59:59.000Z

210

Ozonization of humic acids in brown coal oxidized in situ  

SciTech Connect

The effect of the ozonization of humic acids in chloroform and glacial acetic acid media on the yield and component composition of the resulting products was studied. The high efficiency of ozonization in acetic acid was found. Water-soluble low-molecular-weight substances were predominant among the ozonization products.

S.A. Semenova; Yu.F. Patrakov; M.V. Batina [Russian Academy of Sciences, Kemerovo (Russia). Institute of Coal and Coal Chemistry

2008-10-15T23:59:59.000Z

211

Method for nucleic acid isolation using supercritical fluids  

DOE Patents (OSTI)

A method is disclosed for detecting the presence of a microorganism in an environmental sample involves contacting the sample with a supercritical fluid to isolate nucleic acid from the microorganism, then detecting the presence of a particular sequence within the isolated nucleic acid. The nucleic acid may optionally be subjected to further purification. 4 figs.

Nivens, D.E.; Applegate, B.M.

1999-07-13T23:59:59.000Z

212

EGVII endoglucanase and nucleic acids encoding the same  

DOE Patents (OSTI)

The present invention provides a novel endoglucanase nucleic acid sequence, designated egl7, and the corresponding EGVII amino acid sequence. The invention also provides expression vectors and host cells comprising a nucleic acid sequence encoding EGVII, recombinant EGVII proteins and methods for producing the same.

Dunn-Coleman, Nigel (Los Gatos, CA); Goedegebuur, Frits (Vlaardingen, NL); Ward, Michael (San Francisco, CA); Yao, Jian (Sunnyvale, CA)

2012-02-14T23:59:59.000Z

213

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 2 Gas Chromatography - Mass Spectrometry of Conjugated Linoleic Acids and Metabolites  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 2 Gas Chromatography - Mass Spectrometry of Conjugated Linoleic Acids and Metabolites Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Dow

214

Male Fertility and Lipid MetabolismChapter 3 Fatty Acid Remodeling During Sperm Maturation: Variation of Docosahexaenoic Acid Content  

Science Conference Proceedings (OSTI)

Male Fertility and Lipid Metabolism Chapter 3 Fatty Acid Remodeling During Sperm Maturation: Variation of Docosahexaenoic Acid Content Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downl

215

Advances in Conjugated Linoleic Acid Research, Volume 3Chapter 12 Conjugated Linoleic Acid in Healthy and Cancerous Human Tissues  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 12 Conjugated Linoleic Acid in Healthy and Cancerous Human Tissues Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry AOCS 2526793B0420777596C5A5

216

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 14 Speculation on the Mechanisms of Action of Conjugated Linoleic Acid  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 14 Speculation on the Mechanisms of Action of Conjugated Linoleic Acid Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Downloadable pdf...

217

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 10 Antioxidative Activity of Conjugated Linoleic Acid Determined by ESR  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 10 Antioxidative Activity of Conjugated Linoleic Acid Determined by ESR Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press

218

Fatty Acids in Health Promotion and Disease CausationChapter 19 Linoleic Acids and Cancer Cell Functions  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 19 Linoleic Acids and Cancer Cell Functions Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf of Chapt

219

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 10 The Biology of Conjugated Linoleic Acids in Ruminants  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 10 The Biology of Conjugated Linoleic Acids in Ruminants Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry AOCS Press Downloadable pdf...

220

Fatty Acids in Health Promotion and Disease CausationChapter 11 Trans Fatty Acids and Cardiometabolic Syndrome  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 11 Trans Fatty Acids and Cardiometabolic Syndrome Health Nutrition Biochemistry Trans eChapters Health - Nutrition - Biochemistry Press Downloadable pdf ...

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


221

Fatty Acids in Health Promotion and Disease CausationChapter 27 Polyunsaturated Fatty Acids: Effects on Steroid-hormone Biosynthesis  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 27 Polyunsaturated Fatty Acids: Effects on Steroid-hormone Biosynthesis Health eChapters Health - Nutrition - Biochemistry Press Downloadable pdf of Ch

222

Fatty Acids in Health Promotion and Disease CausationChapter 31 Food Sources and Intakes of Omega-3 Fatty Acids  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 31 Food Sources and Intakes of Omega-3 Fatty Acids Health Nutrition Biochemistry Omega 3 eChapters Health - Nutrition - Biochemistry Press Downloadable pdf ...

223

Fatty Acids in Health Promotion and Disease CausationChapter 21 Fatty Acids and Lipids in Neurobiology: A Brief Overview  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 21 Fatty Acids and Lipids in Neurobiology: A Brief Overview Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf ...

224

Fatty Acids in Health Promotion and Disease CausationChapter 17 Fatty Acid Metabolism and Peroxisome Proliferator-activated Receptors  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 17 Fatty Acid Metabolism and Peroxisome Proliferator-activated Receptors Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downl

225

Fatty Acids in Health Promotion and Disease CausationChapter 10 Fatty Acids in Nuts: Cardiometabolic Health Benefits  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 10 Fatty Acids in Nuts: Cardiometabolic Health Benefits Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf ...

226

Fatty Acids in Health Promotion and Disease CausationChapter 7 Dietary Fatty Acids in Cardiovascular Disease in Women  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 7 Dietary Fatty Acids in Cardiovascular Disease in Women Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf ...

227

Fatty Acids in Health Promotion and Disease CausationChapter 4 Fatty Acids and Cardiac Ischemia-reperfusion Injury  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 4 Fatty Acids and Cardiac Ischemia-reperfusion Injury Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf ...

228

Fatty Acids in Health Promotion and Disease CausationChapter 1 Trans and Other Fatty Acids: Effects on Endothelial Functions  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 1 Trans and Other Fatty Acids: Effects on Endothelial Functions Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable p

229

Synthesis and Metabolism of Carbonyl-C14 Pyruvic and Hydroxypyruvic Acids in Algae  

E-Print Network (OSTI)

AND HYDROXYPYRUVIC ACIDS IN ALGAE Cerhard Milhaud, Andrew A.HYDROXYPYRUYIC ACIDS IN ALGAE Gerhard Milhaud, * - Andrew A.AND HYDROXYPYRUVIC ACIDS IN ALGAE Gerhard Milhaud, Andrew A.

Milhaud, Gerhard; Benson, Andrew A.; Calvin, M.

1955-01-01T23:59:59.000Z

230

Monomers from Renewable Resources: C-H Functionalization of Saturated Fatty Acids.  

E-Print Network (OSTI)

??Saturated fatty acids were used to prepare renewable monomers and polymers. For instance, the alpha-acidity of these fatty acid esters was used to synthesize malonate (more)

Kolb, Nicolai

2013-01-01T23:59:59.000Z

231

Phytic acid plus calcium, but not phytic acid alone, decreases fluoride bioavailability in the rat  

Science Conference Proceedings (OSTI)

Results of in vitro studies have suggested that fluoride becomes insoluble when some soy-based infant formulas are diluted with fluoridated water because of the presence of phytate, added calcium or a combination of these factors. The present study was designed to test this hypothesis in vivo. Male albino rats were fed a purified diet containing phytic acid, calcium and fluoride for 4 weeks in a factorial design of treatments. Phytic acid was added to the diet by chemically reacting a phytic acid concentrate with casein prior to diet preparation to mimic a soy-protein. Food intake, weight gain and femur P were unaffected by dietary treatments. Both phytic acid and supplemental calcium alone had little or no effect upon fluoride uptake into either bone or teeth. The combination of phytic acid plus supplemental calcium, however, significantly increased % of fluoride intake found in the feces which was reflected in a significant decrease in fluoride concentration of femur, 2nd molar teeth and vertebrate bone. These results provide evidence that insoluble complex formation produced by a calcium and phytate interaction can explain reduced fluoride solubility in some soy-based infant formulas as well as decreased fluoride absorbability in vivo.

Cerklewski, F.L. (Oregon State Univ., Corvallis (United States))

1991-03-15T23:59:59.000Z

232

Continuous-flow free acid monitoring method and system  

DOE Patents (OSTI)

A free acid monitoring method and apparatus is provided for continuously measuring the excess acid present in a process stream. The disclosed monitoring system and method is based on the relationship of the partial pressure ratio of water and acid in equilibrium with an acid solution at constant temperature. A portion of the process stream is pumped into and flows through the monitor under the influence of gravity and back to the process stream. A continuous flowing sample is vaporized at a constant temperature and the vapor is subsequently condensed. Conductivity measurements of the condensate produces a nonlinear response function from which the free acid molarity of the sample process stream is determined.

Strain, J.E.; Ross, H.H.

1980-01-11T23:59:59.000Z

233

Sandstone Acidizing Using Chelating Agents and their Interaction with Clays  

E-Print Network (OSTI)

Sandstone acidizing has been carried out with mud acid which combines hydrochloric acid and hydrofluoric acid at various ratios. The application of mud acid in sandstone formations has presented quite a large number of difficulties like corrosion, precipitation of reaction products, matrix deconsolidation, decomposition of clays by HCl, and fast spending of the acids. There has been a recent trend to use chelating agents for stimulation in place of mud acid which are used in oil industry widely for iron control operations. In this study, two chelates, L-glutamic-N, N-diacetic acid (GLDA) and hydroxyethylethylene-diaminetriacetic acid (HEDTA) have been studied as an alternative to mud acid for acidizing. In order to analyze their performance in the application of acidizing, coreflood tests were performed on Berea and Bandera sandstone cores. Another disadvantage of mud acid has been the fast spending at clay mineral surfaces leading to depletion of acid strength, migration of fines, and formation of colloidal silica gel residue. Hence, compatibility of chelates with clay minerals was investigated through the static solubility tests. GLDA and HEDTA were analyzed for their permeability enhancement properties in Berea and Bandera cores. In the coreflood experiments conducted, it was found out that chelating agents can successfully stimulate sandstone formations. The final permeability of the Berea and Bandera cores were enhanced significantly. GLDA performed better than HEDTA in all applications. The substitution of seawater in place of deionized water for mixing purposes also led to an increased conductivity of the core implying GLDA is compatible with seawater. In the static solubility tests, chelates were mixed with HF acid at various concentrations. GLDA fluids kept more amounts of minerals in the solution when compared with HEDTA fluids. Sodium-based chelates when mixed with HF acid showed inhibited performance due to the formation of sodium fluorosilicates precipitates which are insoluble damage creating compounds. The application of ammonium-based chelate with HF acid was able to bring a large amount of aluminosilciates into the solution. The study recommends the use of ammonium-based GLDA in acidizing operations involving HF acid and sodium-based GLDA in the absence of the acid.

George, Noble Thekkemelathethil 1987-

2013-05-01T23:59:59.000Z

234

Continuous-flow free acid monitoring method and system  

DOE Patents (OSTI)

A free acid monitoring method and apparatus is provided for continuously measuring the excess acid present in a process stream. The disclosed monitoring system and method is based on the relationship of the partial pressure ratio of water and acid in equilibrium with an acid solution at constant temperature. A portion of the process stream is pumped into and flows through the monitor under the influence of gravity and back to the process stream. A continuous flowing sample is vaporized at a constant temperature and the vapor is subsequently condensed. Conductivity measurements of the condensate produces a nonlinear response function from which the free acid molarity of the sample process stream is determined.

Strain, James E. (Kingston, TN); Ross, Harley H. (Oak Ridge, TN)

1981-01-01T23:59:59.000Z

235

SOLVENT EXTRACTION RECOVERY OF VANADIUM (AND URANIUM) FROM ACID LIQUORS WITH DI(2-ETHYLHEXYL) PHOSPHORIC ACID  

SciTech Connect

Bench-scale studies were made on use of di(2ethylhexyl)-phosphoric acid in an organic diluent (Dapex process) for solvent extraction recovery of vanadium from acid leach liquors. Vanadium may be stripped from the solvent by either acidic or alkaline reagents, the former having been studied in considerably greater detail. A process for single-cycle recovery and separation of uranium and vanadium from sulfate leach liquors was shown to be attractive both from the standpoint of operation and chemical costs. Process schemes for recovery of vanadium from uranium-barren liquors are also described. On the basis of the encouraging laboratory results, pilot scale tests for specific applications are recommended. (auth)

Crouse, D.J.; Brown, K.B.

1959-11-25T23:59:59.000Z

236

Processes to remove acid forming gases from exhaust gases  

DOE Patents (OSTI)

The present invention relates to a process for reducing the concentration of NO in a gas, which process comprises: (A) contacting a gas sample containing NO with a gaseous oxidizing agent to oxidize the NO to NO[sub 2]; (B) contacting the gas sample of step (A) comprising NO[sub 2] with an aqueous reagent of bisulfite/sulfite and a compound selected from urea, sulfamic acid, hydrazinium ion, hydrazoic acid, nitroaniline, sulfanilamide, sulfanilic acid, mercaptopropanoic acid, mercaptosuccinic acid, cysteine or combinations thereof at between about 0 and 100 C at a pH of between about 1 and 7 for between about 0.01 and 60 sec; and (C) optionally contacting the reaction product of step (A) with conventional chemical reagents to reduce the concentrations of the organic products of the reaction in step (B) to environmentally acceptable levels. Urea or sulfamic acid are preferred, especially sulfamic acid, and step (C) is not necessary or performed. 16 figs.

Chang, S.G.

1994-09-20T23:59:59.000Z

237

Acidity of biomass fast pyrolysis bio-oils  

Science Conference Proceedings (OSTI)

The use of the TAN method for measuring the acidity of biomass fast pyrolysis bio-oil was evaluated. Suggestions for carrying out the analysis have been made. The TAN method by ASTM D664 or D3339 can be used for measuring the acidity of fast pyrolysis bio-oils and their hydrotreating products. The main difference between the methods is that ASTM D664 is specified for higher TAN values than ASTM D3339. Special focus should be placed on the interpretation of the TAN curves because they differ significantly from those of mineral oils. The curve for bio-oils is so gentle that the automatic detection may not observe the end point properly and derivatization should be used. The acidity of fast pyrolysis bio-oils is mainly derived (60-70%) from volatile acids. Other groups of compounds in fast pyrolysis bio-oils that influence acidity include phenolics, fatty and resin acids, and hydroxy acids.

Oasmaa, Anja; Elliott, Douglas C.; Korhonen, Jaana

2010-12-17T23:59:59.000Z

238

Metabolism of Thioctic Acid in Algae  

SciTech Connect

Thioctic acid labeled with sulfur-35 has been prepared and i t s metabolism b y algae has been studied. It i s converted by the algae into a number of forms, all of which upon hydrolysis yield either the disulfide o r i t s sulfoxide. One of these constituted the major portion of the labeled material in the chloroplasts. Aerobic metabolism for some minutes i s required to produce this form. Preliminary studies of the chemical nature of this form suggest i t to be esterified on the carboxyl group with a moiety of very high lipid solubility.

Grisebach, Hans; Fuller, R.C.; Calvin, M.

1956-04-17T23:59:59.000Z

239

The greenhouse effect and acid rain  

DOE Green Energy (OSTI)

The concentrations of carbon dioxide, methane, sulfur dioxide, nitrous oxides and chlorofluorocarbons is increasing in the earth's atmosphere. Increased concentrations of these trace gases could lead to global warming, increased acid rain and increased UV radiation on the earth's surface; however, the actual impacts are still uncertain and are also the subject of great debate. Application of clean'' energy sources such as geothermal are obviously desirable for decreasing these effects and improving our overall general environment. This paper briefly summarizes the global environment concerns, providing a backdrop for the following papers which describe the geothermal role in future environmental considerations. 5 refs., 2 figs., 1 tab.

Traeger, R.K.

1990-01-01T23:59:59.000Z

240

Actinide removal from nitric acid waste streams  

SciTech Connect

Actinide separations research at the Rocky Flats Plant (RFP) has found ways to significantly improve plutonium secondary recovery and americium removal from nitric acid waste streams generated by plutonium purification operations. Capacity and breakthrough studies show anion exchange with Dowex 1x4 (50 to 100 mesh) to be superior for secondary recovery of plutonium. Extraction chromatography with TOPO(tri-n-octyl-phosphine oxide) on XAD-4 removes the final traces of plutonium, including hydrolytic polymer. Partial neutralization and solid supported liquid membrane transfer removes americium for sorption on discardable inorganic ion exchangers, potentially allowing for non-TRU waste disposal.

Muscatello, A.C.; Navratil, J.D.

1986-01-01T23:59:59.000Z

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


241

Nucleic acid amplification using modular branched primers  

DOE Patents (OSTI)

Methods and compositions expand the options for making primers for use in amplifying nucleic acid segments. The invention eliminates the step of custom synthesis of primers for Polymerase Chain Reactions (PCR). Instead of being custom-synthesized, a primer is replaced by a combination of several oligonucleotide modules selected from a pre-synthesized library. A modular combination of just a few oligonucleotides essentially mimics the performance of a conventional, custom-made primer by matching the sequence of the priming site in the template. Each oligonucleotide module has a segment that matches one of the stretches within the priming site.

Ulanovsky, Levy (Westmont, IL); Raja, Mugasimangalam C. (Downers Grove, IL)

2001-01-01T23:59:59.000Z

242

Investigating fatty acid biosynthesis within the algal chloroplast using Chlamydomonas reinhardtii as a model  

E-Print Network (OSTI)

0 fatty acids in transgenic canola by overexpression of Ch0 fatty acids in transgenic canola by overexpression of Ch

Blatti, Jillian L.

2012-01-01T23:59:59.000Z

243

Constructing and engineering fatty acid metabolic pathways for the production of fuels and chemicals  

E-Print Network (OSTI)

0 fatty acids in transgenic canola by overexpression of Ch0 fatty acids in transgenic canola by overexpression of Ch

Steen, Eric James

2010-01-01T23:59:59.000Z

244

Nucleic Acid Standards - Standard Ref. Frame  

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

A Standard Reference Frame for the Description A Standard Reference Frame for the Description of Nucleic Acid Base-pair Geometry Supplementary Material The report is available at Journal of Molecular Biology (2001) 313: 229 - 237 and The Nucleic Acid Cartesian coordinates for A, C, G, T, and U in the optimized reference frame Adenine, Cytosine, Guanine, Thymine, Uracil Standard chemical structures taken from Clowney et al. (1996), J. Am. Chem. Soc., 118, 509-518). These data do not include C1' atoms, which are placed here in the least-squares plane of the base atoms, with the purine C1'-N9 bond length and C1'-N9-C4 valence angle set respectively to 1.46 Å and 126.5° and the pyrimidine C1'-N1 bond and C1-N1-C2 angle to 1.47 Å and 118.1°. These distances and angles are based on the average glycosyl

245

Bioreactor for acid mine drainage control  

DOE Patents (OSTI)

A bioreactor for reacting an aqueous heavy metal and sulfate containing mine drainage solution with sulfate reducing bacteria to produce heavy metal sulfides and reduce the sulfuric acid content of the solution. The reactor is an elongated, horizontal trough defining an inlet section and a reaction section. An inlet manifold adjacent the inlet section distributes aqueous mine drainage solution into the inlet section for flow through the inlet section and reaction section. A sulfate reducing bacteria and bacteria nutrient composition in the inlet section provides sulfate reducing bacteria that with the sulfuric acid and heavy metals in the solution to form solid metal sulfides. The sulfate reducing bacteria and bacteria nutrient composition is retained in the cells of a honeycomb structure formed of cellular honeycomb panels mounted in the reactor inlet section. The honeycomb panels extend upwardly in the inlet section at an acute angle with respect to the horizontal. The cells defined in each panel are thereby offset with respect to the honeycomb cells in each adjacent panel in order to define a tortuous path for the flow of the aqueous solution.

Zaluski, Marek H. (Butte, MT); Manchester, Kenneth R. (Butte, MT)

2001-01-01T23:59:59.000Z

246

The Effect of Heterogeneity on Matrix Acidizing of Carbonate Rocks  

E-Print Network (OSTI)

In matrix acidizing, the goal is to dissolve minerals in the rock to increase well productivity. This is accomplished by injecting an application-specific solution of acid into the formation at a pressure between the pore pressure and fracture pressure. A hydrochloric acid solution is used in carbonate reservoirs, which actually dissolves the calcite rock matrix in the form of conductive channels called wormholes. These wormholes propagate from the wellbore out into the reservoir, bypassing the damaged zone. In matrix acidizing of carbonates, there are four parameters that affect performance: the concentration of calcite present, injection rate of the acid, reaction type, and heterogeneity. Of these parameters, this paper will focus on how rock heterogeneity affects performance. To do this, a coreflood and acidizing apparatus was used to acidize heterogeneous limestone core samples. Rock characterizations and volumetric measurements were considered with the results from these experiments, which made it possible to correlate and quantify the results with rock and volume parameters. It was found that the core samples with more and larger heterogeneities generally required less acid (measured in pore volumes) to achieve breakthrough, that is, a wormhole created axially from one end of the core to the other. This value for pore volumes to breakthrough was one to two orders of magnitude less than more homogeneous samples. The general procedure and best practices for acidizing the core samples is also detailed in this thesis. This procedure was followed for preparation, coreflooding, and acidizing for all core samples.

Keys, Ryan S.

2009-12-01T23:59:59.000Z

247

Reactive Distillation for Esterification of Bio-based Organic Acids  

DOE Green Energy (OSTI)

The following is the final report of the three year research program to convert organic acids to their ethyl esters using reactive distillation. This report details the complete technical activities of research completed at Michigan State University for the period of October 1, 2003 to September 30, 2006, covering both reactive distillation research and development and the underlying thermodynamic and kinetic data required for successful and rigorous design of reactive distillation esterification processes. Specifically, this project has led to the development of economical, technically viable processes for ethyl lactate, triethyl citrate and diethyl succinate production, and on a larger scale has added to the overall body of knowledge on applying fermentation based organic acids as platform chemicals in the emerging biorefinery. Organic acid esters constitute an attractive class of biorenewable chemicals that are made from corn or other renewable biomass carbohydrate feedstocks and replace analogous petroleum-based compounds, thus lessening U.S. dependence on foreign petroleum and enhancing overall biorefinery viability through production of value-added chemicals in parallel with biofuels production. Further, many of these ester products are candidates for fuel (particularly biodiesel) components, and thus will serve dual roles as both industrial chemicals and fuel enhancers in the emerging bioeconomy. The technical report from MSU is organized around the ethyl esters of four important biorenewables-based acids: lactic acid, citric acid, succinic acid, and propionic acid. Literature background on esterification and reactive distillation has been provided in Section One. Work on lactic acid is covered in Sections Two through Five, citric acid esterification in Sections Six and Seven, succinic acid in Section Eight, and propionic acid in Section Nine. Section Ten covers modeling of ester and organic acid vapor pressure properties using the SPEAD (Step Potential Equilibrium and Dynamics) method.

Fields, Nathan; Miller, Dennis J.; Asthana, Navinchandra S.; Kolah, Aspi K.; Vu, Dung; Lira, Carl T.

2008-09-23T23:59:59.000Z

248

DOE - Office of Legacy Management -- Acid Pueblo Canyon - NM 03  

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

Acid Pueblo Canyon - NM 03 Acid Pueblo Canyon - NM 03 FUSRAP Considered Sites Acid/Pueblo Canyon, NM Alternate Name(s): Radioactive Liquid Waste Treatment Plant (TA-45) Acid/Pueblo and Los Alamos Canyon NM.03-3 Location: Canyons in the Pajarito Plateau Region in Los Alamos County, Los Alamos, NM NM.03-3 Historical Operations: Late 1943 or early 1944, head of the south fork of Acid Canyon received untreated liquid waste containing tritium and isotopes of strontium, cesium, uranium, plutonium, and americium discharged from main acid sewer lines and subsequently from the TA-3 plutonium treatment plant. NM.03-3 Eligibility Determination: Radiological Survey(s): Verification Surveys NM.03-5 NM.03-6 Site Status: Certified- Certification Basis and Federal Register Notice NM.03-2

249

Process for the recovery of strontium from acid solutions  

DOE Patents (OSTI)

The invention is a process for selectively extracting strontium and technetium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant is a macrocyclic polyether in a diluent which is insoluble in water, but which will itself dissolve a small amount of water. The process will extract strontium and technetium values from nitric acid solutions which are up to 6 molar in nitric acid. 5 figs.

Horwitz, E.P.; Dietz, M.L.

1992-03-31T23:59:59.000Z

250

Process for the recovery of strontium from acid solutions  

DOE Patents (OSTI)

The invention is a process for selectively extracting strontium and technetium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant is a macrocyclic polyether in a diluent which is insoluble in water, but which will itself dissolve a small amount of water. The process will extract strontium and technetium values from nitric acid solutions which are up to 6 molar in nitric acid.

Horwitz, E.P.; Dietz, M.L.

1990-12-31T23:59:59.000Z

251

Process for the recovery of strontium from acid solutions  

DOE Patents (OSTI)

The invention is a process for selectively extracting strontium and technetium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant is a macrocyclic polyether in a diluent which is insoluble in water, but which will itself dissolve a small amount of water. The process will extract strontium and technetium values from nitric acid solutions which are up to 6 molar in nitric acid.

Horwitz, E. Philip (Naperville, IL); Dietz, Mark L. (Evanston, IL)

1992-01-01T23:59:59.000Z

252

Results of acid treatments in hydrothermal direct heat experiment wells  

SciTech Connect

Matrix acid treatments have been employed in two low-to-moderate temperature hydrothermal wells with successful results. These two wells showed flow rate increases of 40% and 50%. The increased flow reduced the payback periods for the heating systems to nearly one-half of what they were before acidization. It is recommended that well designs in certain areas consider accommodating such acid stimulation techniques, if testing suggests they are warranted as a well completion tool.

Strawn, J.A.

1980-01-01T23:59:59.000Z

253

The greenhouse effect and acid rain  

SciTech Connect

The concentrations of carbon dioxide, methane, sulfur dioxide, nitrous oxides and chlorofluorocarbons is increasing in the earth's atmosphere. Increased concentrations of these trace gases could lead to global warming, increased acid rain and increased UV radiation on the earth's surface; however, the actual impacts are still uncertain and are also the subject of great debate. Application of clean'' energy sources such as geothermal are obviously desirable for decreasing these effects and improving our overall general environment. This paper briefly summarizes the global environment concerns, providing a backdrop for the following papers which describe the geothermal role in future environmental considerations. 5 refs., 2 figs., 1 tab.

Traeger, R.K.

1990-01-01T23:59:59.000Z

254

Mechanism of helicase translocation along nucleic acid  

E-Print Network (OSTI)

In cells, helicase translocation along nucleic acid is essential for many biological processes. However, so far, the mechanism of this translocation is not fully understood. Recent studies show that helicase might translocate through two processes, active process and passive process, with different translocation rate. In this study, a model including such two processes is presented. In which, each of these two processes consists of two sub-processes, chemical sub-process in which needed translocation factors are attached, and mechanochemical sub-process in which helicase makes a forward translocation step. Helicase can switch stochastically between these two processes with external force dependent rates. By this model, ribosome translocation along message RNA is detailed discussed. We found that, with the increase of external force, the mean translocation rate of ribosome increases from one lower limit to one upper limit, and both of these two limits increase with concentrations of the translocation factors. ...

Zhang, Yunxin

2012-01-01T23:59:59.000Z

255

Separator plate for lead-acid battery  

SciTech Connect

A separator plate for the negative electrode of a lead-acid battery comprising a molded, synthetic plastic wall or planar member of generally rectangular configuration. A pair of like separator plates are vertically oriented in the battery casing to sandwich the negative electrode therebetween including juxtaposed retention mats common in such a negative electrode assembly. The sandwich provides a clear-through channel along opposite extremities of the electrode for flow of electrolyte. The sandwich assembly is maintained by means of cooperating locking and sealing formations integral with the separator plates of the assembly. Wrapping of the positive electrode thereby is rendered unnecessary when assembling the battery and enables automated assembly of the battery using the separator plate sandwich.

Wozniak, E.

1985-11-12T23:59:59.000Z

256

A First Look at Yeast Fatty Acid Synthase  

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

A First Look at Yeast Fatty Acid A First Look at Yeast Fatty Acid Synthase A First Look at Yeast Fatty Acid Synthase Print Wednesday, 28 November 2007 00:00 Fatty acids are the major constituents of eukaryotic and bacterial cellular membranes. They are used for functionally important post-translational protein modifications, and chains of fatty acids are the main storage compartments of an organism's chemical energy. Fatty acid synthesis is carried out by fatty acid sythase (FAS), which catalyzes cycles of multistep chemical reactions that are essentially the same in all organisms. FAS uses one acetyl-coenzyme A (CoA) and seven malonyl-CoA molecules to synthesize the 16-carbon palmitic acid, the most abundant fatty acid in eukaryotes. Now, for the first time, a group of researchers has determined the atomic structure of yeast Saccharomyces cerevisiae FAS derived from two crystals of the enzyme, using data collected at ALS Beamlines 8.2.1 and 8.2.2, as well as other synchrotron facilities.

257

Lead-Acid Battery Aging and State of Health Diagnosis.  

E-Print Network (OSTI)

??The lead-acid battery has served as the standard electrical energy storage device in vehicles for nearly 100 years. In this time, its role has expanded (more)

Suozzo, Christopher

2008-01-01T23:59:59.000Z

258

A Data Monitor for Large Lead Acid Batteries.  

E-Print Network (OSTI)

??In modern industry, the lead acid battery plays a very important role. Electric vehicles such as, golf cars and fork lift trucks all use a (more)

Sheng, Jiali

2012-01-01T23:59:59.000Z

259

Novel Biosynthetic Pathway for Production of Fatty Acid ...  

Jay Keasling and Eric Steen of Berkeley Lab have invented what may be the most efficient metabolic pathway for producing fatty acids, and their ...

260

CRC handbook of chromatography: Nucleic acids and related compounds  

SciTech Connect

This book's contents include: Structure Elucidation of Nucleic Acid Components; Fundamentals of HPLC; Analysis of Nucleic Acids and Oligonucleotides; Extraction of Nucleic Acids from Tissues; Gel Filtration Chromatography of RNAs and DNS Fragments; Separation of tRNAs and Oligonucleotides by Mixed Mode Chromatography; Anion-Exchange and Reversed-Phase HPLC of Synthetic Oligonucleotides; Nucleic Acid Components in Biological Fluids; RPLC Separation of RNA and DNA Hydrolysates; Nucleotides in Tissue Extracts; and Determination of Adenine Nucleotides and Creatine Phosphate in Various Mammalian Tissues.

Krstulovic, A.M.

1987-01-01T23:59:59.000Z

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


261

Process for chemical reaction of amino acids and amides ...  

Process for chemical reaction of amino acids and amides yielding selective conversion products United States Patent. Patent Number: 7,049,446: Issued: May 23, 2006:

262

Adverse experiences with nitric acid at the Savannah River Site  

SciTech Connect

Nitric acid is used routinely at the Savannah River Site (SRS) in many processes. However, the site has experienced a number of adverse situations in handling nitric acid. These have ranged from minor injuries to personnel to significant explosions. This document compiles many of these events and includes discussions of process upsets, fires, injuries, and toxic effects of nitric acid and its decomposition products. The purpose of the publication is to apprise those using the acid that it is a potentially dangerous material and can react in many ways as demonstrated by SRS experience. 10 refs.

Durant, W.S.; Craig, D.K.; Vitacco, M.J.; McCormick, J.A.

1991-06-01T23:59:59.000Z

263

Recombinant microorganisms for increased production of organic acids  

DOE Patents (OSTI)

Disclosed are recombinant microorganisms for producing organic acids. The recombinant microorganisms express a polypeptide that has the enzymatic activity of an enzyme that is utilized in the pentose phosphate cycle. The recombinant microorganism may include recombinant Actinobacillus succinogenes that has been transformed to express a Zwischenferment (Zwf) gene. The recombinant microorganisms may be useful in fermentation processes for producing organic acids such as succinic acid and lactic acid. Also disclosed are novel plasmids that are useful for transforming microorganisms to produce recombinant microorganisms that express enzymes such as Zwf.

Yi, Jian; Kleff, Susanne; Guettler, Michael V

2013-04-30T23:59:59.000Z

264

Recombinant microorganisms for increased production of organic acids  

DOE Patents (OSTI)

Disclosed are recombinant microorganisms for producing organic acids. The recombinant microorganisms express a polypeptide that has the enzymatic activity of an enzyme that is utilized in the pentose phosphate cycle. The recombinant microorganism may include recombinant Actinobacillus succinogenes that has been transformed to express a Zwischenferment (Zwf) gene. The recombinant microorganisms may be useful in fermentation processes for producing organic acids such as succinic acid and lactic acid. Also disclosed are novel plasmids that are useful for transforming microorganisms to produce recombinant microorganisms that express enzymes such as Zwf.

Yi, Jian (East Lansing, MI); Kleff, Susanne (East Lansing, MI); Guettler, Michael V. (Holt, MI)

2012-02-21T23:59:59.000Z

265

Dilute acid/metal salt hydrolysis of lignocellulosics  

DOE Patents (OSTI)

A modified dilute acid method of hydrolyzing the cellulose and hemicellulose in lignocellulosic material under conditions to obtain higher overall fermentable sugar yields than is obtainable using dilute acid alone, comprising: impregnating a lignocellulosic feedstock with a mixture of an amount of aqueous solution of a dilute acid catalyst and a metal salt catalyst sufficient to provide higher overall fermentable sugar yields than is obtainable when hydrolyzing with dilute acid alone; loading the impregnated lignocellulosic feedstock into a reactor and heating for a sufficient period of time to hydrolyze substantially all of the hemicellulose and greater than 45% of the cellulose to water soluble sugars; and recovering the water soluble sugars.

Nguyen, Quang A. (Golden, CO); Tucker, Melvin P. (Lakewood, CO)

2002-01-01T23:59:59.000Z

266

DOE specification: Flooded-type lead-acid storage batteries  

DOE Green Energy (OSTI)

This document contains a ``fill-in-the-blanks`` guide specification for procurement of flooded-type lead-acid storage batteries, for uninterruptible power supply applications.

NONE

1996-08-01T23:59:59.000Z

267

Advances in Conjugated Linoleic Acid Research, Volume 3  

Science Conference Proceedings (OSTI)

The number of peer reviewed publications on CLA since the 2003 publication of Advances in Conjugated Linoleic Acid Research, Volume 2, has more than doubled. ...

268

Chloride Leaching of Spent Lead-Acid Battery Paste  

Science Conference Proceedings (OSTI)

Abstract Scope, In this study leaching of spent lead acid-battery paste in sodium ... Cost, Energy, Emissions, and Resource Assessment of the Production of...

269

NREL Creates New Pathways for Producing Biofuels and Acids from...  

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

Creates New Pathways for Producing Biofuels and Acids from Cyanobacteria Cyanobacteria use photosynthesis to convert carbon dioxide into sugars such as glycogen, a carbohydrate...

270

Characterization and Processing Ultramafic Nickel Ore after Acid ...  

Science Conference Proceedings (OSTI)

Structural changes in the ore due to combined acid (H2SO4) and grinding treatment .... Selective Removal of Thiophene from Liquid Fuels over Nickel- Based...

271

Fatty Acids in Health Promotion and Disease CausationChapter 12 Effects of Fatty Acids Containing a trans Double Bond on Body Composition  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 12 Effects of Fatty Acids Containing a trans Double Bond on Body Composition eChapters Press Downloadable pdf of Chapter 12 Effects of Fatty Acids Contai

272

Assessment of phosphoric acid and trifluoromethane sulfonic acid fuel cells for vehicular powerplants  

SciTech Connect

The application of phosphoric acid and trifluoromethane sulfonic acid fuel cell powerplants for a basic mid-size automobile (i.e. GM-X type car) has been assessed. A parametric analysis was conducted to examine the effects of various system parameters such as operating temperature and pressure, current density and catalyst loading on system efficiency (miles/gallon) and cost. A system schematic and a list of design specifications were prepared to guide the conceptual design. Weight, volume and peak power of both the powerplants were estimated. The two fuel conditioning methods-conventional steam reforming and partial oxidation/ reforming were evaluated. Both the fuel cell systems were found to possess great potential for the transportation application.

Patel, D.N.; Leo, A.; Tobias, L.

1982-08-01T23:59:59.000Z

273

Increased Production of Fatty Acids and Triglycerides in Aspergillus oryzae by Enhancing Expressions of Fatty Acid Synthesis-Related Genes  

Science Conference Proceedings (OSTI)

Microbial production of fats and oils is being developedas a means of converting biomass to biofuels. Here we investigate enhancing expression of enzymes involved in the production of fatty acids and triglycerides as a means to increase production of these compounds in Aspergillusoryzae. Examination of the A.oryzaegenome demonstrates that it contains twofatty acid synthases and several other genes that are predicted to be part of this biosynthetic pathway. We enhancedthe expressionof fatty acid synthesis-related genes by replacing their promoters with thepromoter fromthe constitutively highly expressedgene tef1. We demonstrate that by simply increasing the expression of the fatty acid synthasegenes we successfullyincreasedtheproduction of fatty acids and triglyceridesby more than two fold. Enhancement of expression of the fatty acid pathway genes ATP-citrate lyase and palmitoyl-ACP thioesteraseincreasedproductivity to a lesser extent.Increasing expression ofacetyl-CoA carboxylase caused no detectable change in fatty acid levels. Increases in message level for each gene were monitored usingquantitative real-time RT-PCR. Our data demonstrates that a simple increase in the abundance of fatty acid synthase genes can increase the detectable amount of fatty acids.

Tamano, Koichi; Bruno, Kenneth S.; Karagiosis, Sue A.; Culley, David E.; Deng, Shuang; Collett, James R.; Umemura, Myco; Koike, Hideaki; Baker, Scott E.; Machida, Masa

2013-01-01T23:59:59.000Z

274

Oxidative degradation of bis (2,4,4-trimethylpentyl) dithiophosphinic acid in nitric acid studied by electrospray ionization mass spectrometry  

SciTech Connect

Samples of bis(2,4,4-trimethylpentyl)dithiophosphinic acid (Cyanex-301) were analyzed using direct infusion electrospray ionization mass spectrometry. Positive ion spectra of standard and stereo-pure acids displayed ions typical of the unmodified compound, cationized monomeric and dimeric cluster ion species. In addition, a significant ions 2 u less than the dimeric clusters were seen, that correspond to an oxidatively coupled species designated Cyx2 that is observed as H- or Na-cationized species in the electrospray analyses. Based on uncorrected ion intensities, Cyx2 is estimated to account for about 20% of the total in the standard materials. When samples that were contacted with 3 M HNO3 were analyzed, the positive ion spectrum consisted nearly entirely of ions derived from the oxidatively coupled product, indicating that the acid promotes coupling. The negative ion spectra of the standard acids consisted nearly entirely of the conjugate base that is formed by deprotonation of the acids, and cluster ions containing multiple acid molecules. The negative spectra of the HNO3-contacted samples also contained the conjugate base of the unmodified acid, but also two other species that correspond to the dioxo- and perthio- derivatives. It is concluded that HNO3 contact causes significant oxidation, forming at least three major products, Cyx2, the perthio-acid, and the dioxo-acid.

G. S. Groenewold; D. R. Peterman

2012-10-01T23:59:59.000Z

275

Boric Acid Corrosion Guidebook, Revision 1: Managing Boric Acid Corrosion Issues at PWR Power Stations  

Science Conference Proceedings (OSTI)

Boric acid corrosion (BAC) represents a significant maintenance concern at many pressurized water reactor (PWR) plants because of the large number of potential leakage sources -- flanged joints, valve packing, mechanical seals, and fittings. This report compiles information that can help utility staff reduce the potential for leakage, properly and uniformly evaluate individual incidents, mitigate potential damage, and justify continued operation with leakage when appropriate. BAC does not represent a sig...

2001-11-01T23:59:59.000Z

276

EFFECTS OF NITRIC ACID ON CRITICALITY SAFETY ANALYSIS  

Science Conference Proceedings (OSTI)

As nitric acid molarity is increased, there are two competing phenomena affecting the reactivity of the system. First, there is interaction between each of the 10 wells in the basket-like insert. As the molarity of the nitric acid solution is increased (it moves from 100% water to 100% HNO{sub 3}), the hydrogen atom density decreases by about 80%. However, it remains a relatively efficient moderator. The moderating ratio of nitric acid is about 90% that of water. As the media between the wells is changed from 100% water to 100% nitric acid, the density of the media increases by 50%. A higher density typically leads to a better reflector. However, when the macroscopic scattering cross sections are considered, nitric acid is a much worse reflector than water. The effectiveness of nitric acid as a reflector is about 40% that of water. Since the media between the wells become a worse reflector and still remains an effective moderator, interaction between the wells increases. This phenomenon will cause reactivity to increase as nitric acid molarity increases. The seond phenomenon is due to the moderating ratio changing in the high concentration fissile-nitric acid solution in the 10 wells. Since the wells contain relatively small volumes of high concentration solutions, a small decrease in moderating power has a large effect on reactivity. This is due to the fact that neutrons are more likely to escape the high concentration fissile solution before causing another fission event. The result of this phenomenon is that as nitric acid molarity increases, reactivity decreases. Recent studies have shown that the second phenomenon is indeed the dominating force in determining reactivity changes in relation to nitric acid molarity changes. When considering the system as a whole, as nitric acid molarity increases, reactivity decreases.

Williamson, B.

2011-08-18T23:59:59.000Z

277

Nucleic Acid Database: a Repository of Three-Dimensional Information about Nucleic Acids  

DOE Data Explorer (OSTI)

The Nucleic Acid Database (NDB) provides 3-D structural information about nucleic acids. It is a relational database designed to facilitate the easy search for nucleic acid structures using any of the stored primary or derived structural features. Reports can then be created describing any properties of the selected structures and structures may be viewed in several different formats, including the mmCIF format, the NDB Atlas format, the NDB coordinate format, or the PDB coordinate format. Browsing the images of the structures can also be done through the galleries of the X-ray Atlas or the NMR Atlas, available on this website. The images are created directly from coordinates in the NDB repository. More than 3500 structures can be searched, viewed, and included in preformatted reports.This website also includes a number of specialized tools and interfaces. The NDB maintains the mmCIF Web site (macromolecular Crystallographic Information File), the IUCr-approved data representation for macromolecular structures. (Specialized Interface)

Berman, H.M.; Olson, W.K.; Beveridge, D.L.; Westbrook, J.; Gelbin, A.; Demeny, T.; Hsieh, S.H.; Srinivasan, A.R.; Schneider, B.

278

Surface-active properties of humic and sulfochlorohumic acids  

SciTech Connect

The surface tension of alkaline solutions of humic acids and their sulfochloroderivatives, which are synthesized by sulfonation of chlorohumic acids isolated from coal chlorinated by the electrochemical method, is investigated. It is established that humic compounds possess weak surface activity. Basic adsorption parameters are calculated.

Ryabova, I.N.; Mustafina, G.A.; Akkulova, Z.G.; Satymbaeva, A.S. [Kazakh Academy of Sciences, Karaganda (Kazakhstan)

2009-10-15T23:59:59.000Z

279

Boron containing amino acid compounds and methods for their use  

DOE Patents (OSTI)

The present invention provides new boron containing amino acid compounds and methods for making these compounds by contacting melphalan or another nitrogen mustard derivative and sodium borocaptate. The present invention also provides a method of treating a mammal having a tumor by administering to the mammal a therapeutically effective amount of the new boron containing amino acid compounds.

Glass, John D. (Shoreham, NY); Coderre, Jeffrey A. (Wading River, NY)

2000-01-01T23:59:59.000Z

280

Nucleic acids encoding metal uptake transporters and their uses  

DOE Patents (OSTI)

The invention provides LCT1 nucleic acids which encode metal ion uptake transporters. The invention also provides methods of modulating heavy metal and alkali metal uptake in plants. The methods involve producing transgenic plants comprising a recombinant expression cassette containing an LCT1 nucleic acid linked to a plant promoter.

Schroeder, Julian I. (La Jolla, CA); Antosiewicz, Danuta M. (Warsaw, PL); Schachtman, Daniel P. (Tranmere, AU); Clemens, Stephan (San Diego, CA)

1999-01-01T23:59:59.000Z

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


281

Method for incorporating radioactive phosphoric acid solutions in concrete  

DOE Patents (OSTI)

A method for incorporating radioactive phosphoric acid solutions in concrete is described wherein the phosphoric acid is reacted with Ca(OH)/sub 2/ to form a precipitate of hydroxyapatite and the hydroxyapatite is mixed with Portland cement to form concrete.

Wolf, G.A.; Smith, J.W.; Ihle, N.C.

1982-07-08T23:59:59.000Z

282

Aging, Estrogen Loss and Epoxyeicosatrienoic Acids Alison R. Lee1.  

E-Print Network (OSTI)

Aging, Estrogen Loss and Epoxyeicosatrienoic Acids (EETs) Alison R. Lee1. , Angela S. Pechenino1 loss, caused by menopause, and aging have inflammatory consequences. Epoxyeicosatrienoic acids (EETs cyclooxygenases and lipoxygenases. We hypothesized that aging and estrogen loss would reduce levels of anti

Hammock, Bruce D.

283

Solid phase sequencing of double-stranded nucleic acids  

DOE Patents (OSTI)

This invention relates to methods for detecting and sequencing of target double-stranded nucleic acid sequences, to nucleic acid probes and arrays of probes useful in these methods, and to kits and systems which contain these probes. Useful methods involve hybridizing the nucleic acids or nucleic acids which represent complementary or homologous sequences of the target to an array of nucleic acid probes. These probe comprise a single-stranded portion, an optional double-stranded portion and a variable sequence within the single-stranded portion. The molecular weights of the hybridized nucleic acids of the set can be determined by mass spectroscopy, and the sequence of the target determined from the molecular weights of the fragments. Nucleic acids whose sequences can be determined include nucleic acids in biological samples such as patient biopsies and environmental samples. Probes may be fixed to a solid support such as a hybridization chip to facilitate automated determination of molecular weights and identification of the target sequence.

Fu, Dong-Jing (Waltham, MA); Cantor, Charles R. (Boston, MA); Koster, Hubert (Concord, MA); Smith, Cassandra L. (Boston, MA)

2002-01-01T23:59:59.000Z

284

Method for incorporating radioactive phosphoric acid solutions in concrete  

DOE Patents (OSTI)

A method for incorporating radioactive phosphoric acid solutions in concrete is described wherein the phosphoric acid is reacted with Ca(OH).sub.2 to form a precipitate of hydroxyapatite and the hydroxyapatite is mixed with portland cement to form concrete.

Wolf, Gary A. (Kennewick, WA); Smith, Jeffrey W. (Lancaster, OH); Ihle, Nathan C. (Walla Walla, WA)

1984-01-01T23:59:59.000Z

285

DISSOLUTION OF URANIUM FUELS BY MONOOR DIFLUOROPHOSPHORIC ACID  

DOE Patents (OSTI)

A method of dissolving and separating uranium from a uranium matrix fuel element by dissolving the uraniumcontaining matrix in monofluorophosphoric acid and/or difluorophosphoric acid at temperatures ranging from 150 to 275 un. Concent 85% C, thereafter neutralizing the solution to precipitate uranium solids, and converting the solids to uranium hexafluoride by treatment with a halogen trifluoride is presented. (AEC)

Johnson, R.; Horn, F.L.; Strickland, G.

1963-05-01T23:59:59.000Z

286

Nucleic acid based fluorescent sensor for mercury detection  

DOE Patents (OSTI)

A nucleic acid enzyme comprises an oligonucleotide containing thymine bases. The nucleic acid enzyme is dependent on both Hg.sup.2+and a second ion as cofactors, to produce a product from a substrate. The substrate comprises a ribonucleotide, a deoxyribonucleotide, or both.

Lu, Yi; Liu, Juewen

2013-02-05T23:59:59.000Z

287

Mutant fatty acid desaturase and methods for directed mutagenesis  

DOE Patents (OSTI)

The present invention relates to methods for producing fatty acid desaturase mutants having a substantially increased activity towards substrates with fewer than 18 carbon atom chains relative to an unmutagenized precursor desaturase having an 18 carbon chain length specificity, the sequences encoding the desaturases and to the desaturases that are produced by the methods. The present invention further relates to a method for altering a function of a protein, including a fatty acid desaturase, through directed mutagenesis involving identifying candidate amino acid residues, producing a library of mutants of the protein by simultaneously randomizing all amino acid candidates, and selecting for mutants which exhibit the desired alteration of function. Candidate amino acids are identified by a combination of methods. Enzymatic, binding, structural and other functions of proteins can be altered by the method.

Shanklin, John (Shoreham, NY); Whittle, Edward J. (Greenport, NY)

2008-01-29T23:59:59.000Z

288

GLYCOLIC-FORMIC ACID FLOWSHEET SLUDGE MATRIX STUDY  

Science Conference Proceedings (OSTI)

Testing was completed to demonstrate the viability of the newly developed glycolic acid/formic acid flowsheet on processing in the Defense Waste Processing Facility's (DWPF) Chemical Process Cell (CPC). The Savannah River National Laboratory (SRNL) initiated a sludge matrix study to evaluate the impact of changing insoluble solid composition on the processing characteristics of slurries in DWPF. Four sludge simulants were prepared to cover two compositional ranges in the waste. The first was high iron/low aluminum versus low iron/high aluminum (referred to as HiFe or LoFe in this report). The second was high calcium-manganese/low nickel, chromium, and magnesium versus low calcium-manganese/high nickel, chromium, and magnesium (referred to as HiMn or LoMn in this report). These two options can be combined to form four distinct sludge compositions. The sludge matrix study called for testing each of these four simulants near the minimum acid required for nitrite destruction (100% acid stoichiometry) and at a second acid level that produced significant hydrogen by noble metal catalyzed decomposition of formic acid (150% acid stoichiometry). Four simulants were prepared based on the four possible combinations of the Al/Fe and Mn-Ca/Mg-Ni-Cr options. Preliminary simulant preparation work has already been documented. The four simulants were used for high and low acid testing. Eight planned experiments (GF26 to GF33) were completed to demonstrate the viability of the glycolic-formic flowsheet. Composition and physical property measurements were made on the SRAT product. Composition measurements were made on the condensate from the Mercury Water Wash Tank (MWWT), Formic Acid Vent Condenser (FAVC), ammonia scrubber and on SRAT samples pulled throughout the SRAT cycle. Updated values for formate loss and nitrite-tonitrate conversion were found that can be used in the acid calculations for future sludge matrix process simulations with the glycolic acid/formic acid flowsheet. Preliminary results of the initial testing indicate: (1) Hydrogen generation rate was very low throughout all SRAT cycles. (2) The mercury concentration of the SRAT product was below the 0.8 wt% limit in all runs. (3) Nitrite in the SRAT product was aluminum sludges (LoFe, HM type sludges) were much more viscous than the Hi Fe sludges. At 100% acid stoichiometry, the SRAT products from the high aluminum sludges were very viscous but at 150% acid stoichiometry, the SRAT products from the high aluminum sludges were very thin. This makes the glycolic acid/formic acid flowsheet an improvement for processing more viscous sludges. (6) The pH of the SRAT products was from 2.7-3.1 for the 150% acid stoichiometry runs and 5.1-6.1 for the 100% acid stoichiometry runs, significantly lower than is typical of the baseline nitric acid/formic acid flowsheet.

Lambert, D.; Koopman, D.

2011-06-30T23:59:59.000Z

289

Stardust, Supernovae and the Chirality of the Amino Acids  

SciTech Connect

A mechanism for creating enantiomerism in the amino acids, the building blocks of the proteins, that involves global selection of one chirality by interactions between the amino acids and neutrinos from core-collapse supernovae is described. The selection involves the dependence of the interaction cross sections on the orientations of the spins of the neutrinos and the 14N nuclei in the amino acids, or in precursor molecules, which in turn couple to the molecular chirality. The subsequent chemical evolution and galactic mixing would ultimately populate the Galaxy with the selected species. The resulting amino acids could either be the source thereof on Earth, or could have triggered the chirality that was ultimately achieved for Earth's amino acids.

Boyd, R N; Kajino, T; Onaka, T

2011-03-09T23:59:59.000Z

290

Human jagged polypeptide, encoding nucleic acids and methods of use  

DOE Patents (OSTI)

The present invention provides an isolated polypeptide exhibiting substantially the same amino acid sequence as JAGGED, or an active fragment thereof, provided that the polypeptide does not have the amino acid sequence of SEQ ID NO:5 or SEQ ID NO:6. The invention further provides an isolated nucleic acid molecule containing a nucleotide sequence encoding substantially the same amino acid sequence as JAGGED, or an active fragment thereof, provided that the nucleotide sequence does not encode the amino acid sequence of SEQ ID NO:5 or SEQ ID NO:6. Also provided herein is a method of inhibiting differentiation of hematopoietic progenitor cells by contacting the progenitor cells with an isolated JAGGED polypeptide, or active fragment thereof. The invention additionally provides a method of diagnosing Alagille Syndrome in an individual. The method consists of detecting an Alagille Syndrome disease-associated mutation linked to a JAGGED locus.

Li, Linheng (Seattle, WA); Hood, Leroy (Seattle, WA)

2000-01-01T23:59:59.000Z

291

GLYCOLIC-FORMIC ACID FLOWSHEET SLUDGE MATRIX STUDY  

DOE Green Energy (OSTI)

Testing was completed to demonstrate the viability of the newly developed glycolic acid/formic acid flowsheet on processing in the Defense Waste Processing Facility's (DWPF) Chemical Process Cell (CPC). The Savannah River National Laboratory (SRNL) initiated a sludge matrix study to evaluate the impact of changing insoluble solid composition on the processing characteristics of slurries in DWPF. Four sludge simulants were prepared to cover two compositional ranges in the waste. The first was high iron/low aluminum versus low iron/high aluminum (referred to as HiFe or LoFe in this report). The second was high calcium-manganese/low nickel, chromium, and magnesium versus low calcium-manganese/high nickel, chromium, and magnesium (referred to as HiMn or LoMn in this report). These two options can be combined to form four distinct sludge compositions. The sludge matrix study called for testing each of these four simulants near the minimum acid required for nitrite destruction (100% acid stoichiometry) and at a second acid level that produced significant hydrogen by noble metal catalyzed decomposition of formic acid (150% acid stoichiometry). Four simulants were prepared based on the four possible combinations of the Al/Fe and Mn-Ca/Mg-Ni-Cr options. Preliminary simulant preparation work has already been documented. The four simulants were used for high and low acid testing. Eight planned experiments (GF26 to GF33) were completed to demonstrate the viability of the glycolic-formic flowsheet. Composition and physical property measurements were made on the SRAT product. Composition measurements were made on the condensate from the Mercury Water Wash Tank (MWWT), Formic Acid Vent Condenser (FAVC), ammonia scrubber and on SRAT samples pulled throughout the SRAT cycle. Updated values for formate loss and nitrite-tonitrate conversion were found that can be used in the acid calculations for future sludge matrix process simulations with the glycolic acid/formic acid flowsheet. Preliminary results of the initial testing indicate: (1) Hydrogen generation rate was very low throughout all SRAT cycles. (2) The mercury concentration of the SRAT product was below the 0.8 wt% limit in all runs. (3) Nitrite in the SRAT product was <100 mg/kg for all runs. (4) Foaminess was not an issue using the nominal antifoam addition strategy in these tests. (5) The high aluminum sludges (LoFe, HM type sludges) were much more viscous than the Hi Fe sludges. At 100% acid stoichiometry, the SRAT products from the high aluminum sludges were very viscous but at 150% acid stoichiometry, the SRAT products from the high aluminum sludges were very thin. This makes the glycolic acid/formic acid flowsheet an improvement for processing more viscous sludges. (6) The pH of the SRAT products was from 2.7-3.1 for the 150% acid stoichiometry runs and 5.1-6.1 for the 100% acid stoichiometry runs, significantly lower than is typical of the baseline nitric acid/formic acid flowsheet.

Lambert, D.; Koopman, D.

2011-06-30T23:59:59.000Z

292

Extracting metal ions with diphosphonic acid, or derivative thereof  

DOE Patents (OSTI)

Thermodynamically-unstable complexing agents which are diphosphonic acids and diphosphonic acid derivatives (or sulfur containing analogs), like carboxyhydroxymethanediphosphonic acid and vinylidene-1,1-diphosphonic acid, are capable of complexing with metal ions, and especially metal ions in the II, III, IV, V and VI oxidation states, to form stable, water-soluble metal ion complexes in moderately alkaline to highly-acidic media. However, the complexing agents can be decomposed, under mild conditions, into non-organic compounds which, for many purposes are environmentally-nondamaging compounds thereby degrading the complex and releasing the metal ion for disposal or recovery. Uses for such complexing agents as well as methods for their manufacture are also described. 1 fig.

Horwitz, E.P.; Gatrone, R.C.; Nash, K.L.

1994-07-26T23:59:59.000Z

293

Extracting metal ions with diphosphonic acid, or derivative thereof  

DOE Patents (OSTI)

Thermodynamically-unstable complexing agents which are diphosphonic acids and diphosphonic acid derivatives (or sulphur containing analogs), like carboxyhydroxymethanediphosphonic acid and vinylidene-1,1-diphosphonic acid, are capable of complexing with metal ions, and especially metal ions in the II, III, IV, V and VI oxidation states, to form stable, water-soluble metal ion complexes in moderately alkaline to highly-acidic media. However, the complexing agents can be decomposed, under mild conditions, into non-organic compounds which, for many purposes are environmentally-nondamaging compounds thereby degrading the complex and releasing the metal ion for disposal or recovery. Uses for such complexing agents as well as methods for their manufacture are also described.

Horwitz, Earl P. (Argonne, IL); Gatrone, Ralph C. (Argonne, IL); Nash, Kenneth L. (Argonne, IL)

1994-01-01T23:59:59.000Z

294

Nucleic Acid Standards | Base Pair Geometry  

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

A Standard Reference Frame for the Description A Standard Reference Frame for the Description of Nucleic Acid Base-pair Geometry Table 1. Cartesian coordinates of non-hydrogen atoms in the standard reference frames of the five common nitrogenous bases Atom Base x(Å) y(Å) z(Å) Adenine ATOM 1 C1' A A 1 -2.479 5.346 0.000 ATOM 2 N9 A A 1 -1.291 4.498 0.000 ATOM 3 C8 A A 1 0.024 4.897 0.000 ATOM 4 N7 A A 1 0.877 3.902 0.000 ATOM 5 C5 A A 1 0.071 2.771 0.000 ATOM 6 C6 A A 1 0.369 1.398 0.000 ATOM 7 N6 A A 1 1.611 0.909 0.000 ATOM 8 N1 A A 1 -0.668 0.532 0.000 ATOM 9 C2 A A 1 -1.912 1.023 0.000 ATOM 10 N3 A A 1 -2.320 2.290 0.000

295

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 9 Animal Feeding Strategies for Conjugated Linoleic Acid Enrichment of Milk  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 9 Animal Feeding Strategies for Conjugated Linoleic Acid Enrichment of Milk Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry 735D98CA0ABF7C8A10664FCCD

296

Green Vegetable Oil ProcessingChapter 13 CLA Production by Photoisomerization of Linoleic Acid in Linoleic Acid Rich Oils  

Science Conference Proceedings (OSTI)

Green Vegetable Oil Processing Chapter 13 CLA Production by Photoisomerization of Linoleic Acid in Linoleic Acid Rich Oils Processing eChapters Processing 3A8AC1E4581BC1F55CC42D200EF43697 AOCS Press Downloadable pdf ...

297

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 1 Analysis of Conjugated Linoleic Acid: An Overview  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 1 Analysis of Conjugated Linoleic Acid: An Overview Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry FC2183A22B667A6B95F8EF1636CB912D AOCS Press

298

Mercury-free dissolution of aluminum-clad fuel in nitric acid  

DOE Patents (OSTI)

A mercury-free dissolution process for aluminum involves placing the aluminum in a dissolver vessel in contact with nitric acid-fluoboric acid mixture at an elevated temperature. By maintaining a continuous flow of the acid mixture through the dissolver vessel, an effluent containing aluminum nitrate, nitric acid, fluoboric acid and other dissolved components are removed. 5 figs.

Christian, J.D.; Anderson, P.A.

1994-11-15T23:59:59.000Z

299

Mercury-free dissolution of aluminum-clad fuel in nitric acid  

Science Conference Proceedings (OSTI)

A mercury-free dissolution process for aluminum involves placing the aluminum in a dissolver vessel in contact with nitric acid-fluoboric acid mixture at an elevated temperature. By maintaining a continuous flow of the acid mixture through the dissolver vessel, an effluent containing aluminum nitrate, nitric acid, fluoboric acid and other dissolved components are removed.

Christian, Jerry D. (Idaho Falls, ID); Anderson, Philip A. (Pocatello, ID)

1994-01-01T23:59:59.000Z

300

REVIVING ABANDONED RESERVOIRS WITH HIGH-PRESSURE AIR INJECTION: APPLICATION IN A FRACTURED AND KARSTED DOLOMITE RESERVOIR  

SciTech Connect

The Bureau of Economic Geology and Goldrus Producing Company have assembled a multidisciplinary team of geoscientists and engineers to evaluate the applicability of high-pressure air injection (HPAI) in revitalizing a nearly abandoned carbonate reservoir in the Permian Basin of West Texas. The characterization phase of the project is utilizing geoscientists and petroleum engineers from the bureau of Economic Geology and the Department of Petroleum Engineering (both at The University of Texas at Austin) to define the controls on fluid flow in the reservoir as a basis for developing a reservoir model. This model will be used to define a field deployment plant that Goldrus, a small independent oil company, will implement by drilling both vertical and horizontal wells during the demonstration phase of the project. Additional reservoir data are being gathered during the demonstration phase to improve the accuracy of the reservoir model. The results of the demonstration are being closely monitored to provide a basis for improving the design of the HPAI field deployment plan. The results of the reservoir characterization field demonstration and monitoring program will be documented and widely disseminated to facilitate adoption of this technology by oil operators in the Permian Basin and elsewhere in the US.

Robert Loucks; Steve Ruppel; Julia Gale; Jon Holder; Jon Olsen; Deanna Combs; Dhiraj Dembla; Leonel Gomez

2003-06-01T23:59:59.000Z

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


301

REVIVING ABANDONED RESERVOIRS WITH HIGH-PRESSURE AIR INJECTION: APPLICATION IN A FRACTURED AND KARSTED DOLOMITE RESERVOIR  

SciTech Connect

The Bureau of Economic Geology (BEG) and Goldrus Producing Company have assembled a multidisciplinary team of geoscientists and engineers to evaluate the applicability of high-pressure air injection (HPAI) in revitalizing a nearly abandoned carbonate reservoir in the Permian Basin of West Texas. The characterization phase of the project is utilizing geoscientists and petroleum engineers from the Bureau of Economic Geology (BEG) and the Department of Petroleum and Geosystems Engineering (both at The University of Texas at Austin) to define the controls on fluid flow in the reservoir as a basis for developing a reservoir model. This model will be used to define a field deployment plan that Goldrus, a small independent oil company, will implement by drilling both vertical and horizontal wells during the demonstration phase of the project. Additional reservoir data were to be generated during the demonstration phase to improve the accuracy of the reservoir model. The demonstration phase has been delayed by Goldrus because of funding problems. Since the first of the year, Goldrus has been active in searching for partners to help finance the project. To this end it has commissioned several small consulting studies to technically support its effort to secure a partner. After financial support is obtained, the demonstration phase of the project will proceed. Since just after the beginning of the year, BEG has curtailed project activities and spending of DOE funds except for the continued support of one engineering student. This student has now completed his work and has written a thesis describing his research (titled ''Stimulating enhanced oil recovery (EOR) by high-pressure air injection (HPAI) in west Texas light oil reservoir''). We plan to recommence our work on the project as soon as the operator obtains necessary funding to carry out the demonstration phase of the project. In order to complete all activities specified in the proposal, it will be necessary to request an extension of the project from the originally defined completion date. We are confident that Goldrus will obtain the necessary funding to continue and that we can complete the project if an extension is granted. We strongly believe that the results of this study will provide the impetus for a new approach to enhanced oil recovery in the Permian Basin and elsewhere in the United States.

Robert Loucks; Steve Ruppel; Julia Gale; Jon Holder; Jon Olson; Deanna Combs; Dhiraj Dembla

2004-06-01T23:59:59.000Z

302

REVIVING ABANDONED RESERVOIRS WITH HIGH-PRESSURE AIR INJECTION: APPLICATION IN A FRACTURED AND KARSTED DOLOMITE RESERVOIR  

SciTech Connect

The field operator, Goldrus Producing Company, has been unable to secure funding needed to continue the field demonstration phase of the project. Accordingly, we have temporarily halted all project activities until necessary funding is obtained. Goldrus felt confident that funds could be acquired by third quarter 2005 at which time it would have been necessary to request a project extension to complete the originally designed study. A project extension was granted but it appears Goldrus will have difficulty securing funds. We Bureau of Economic Geology are investigating a new approach on how to fulfill our initial objectives of promoting high-pressure air injection of Ellenburger reservoirs.

Robert Loucks; Stephen C. Ruppel

2006-02-01T23:59:59.000Z

303

Reviving Abandoned Reservoirs with High-Pressure Air Injection: Application in a Fractured and Karsted Dolomite Reservoir  

SciTech Connect

The field operator, Goldrus Producing Company, has been unable to secure funding needed to continue the field demonstration phase of the project. Accordingly, we have temporarily halted all project activities until necessary funding is obtained. Goldrus is confident that funds can be acquired by third quarter 2005 at which time it will be necessary to request a project extension to complete the originally designed study.

Robert Loucks; Stephen C. Ruppel

2005-03-31T23:59:59.000Z

304

REVIVING ABANDONED RESERVOIRS WITH HIGH-PRESSURE AIR INJECTION: APPLICATION IN A FRACTURED AND KARSTED DOLOMITE RESERVOIR  

SciTech Connect

The Bureau of Economic Geology (BEG) and Goldrus Producing Company have assembled a multidisciplinary team of geoscientists and engineers to evaluate the applicability of high-pressure air injection (HPAI) in revitalizing a nearly abandoned carbonate reservoir in the Permian Basin of West Texas. The characterization phase of the project is utilizing geoscientists and petroleum engineers from the Bureau of Economic Geology (BEG) and the Department of Petroleum and Geosystems Engineering (both at The University of Texas at Austin) to define the controls on fluid flow in the reservoir as a basis for developing a reservoir model. This model will be used to define a field deployment plan that Goldrus, a small independent oil company, will implement by drilling both vertical and horizontal wells during the demonstration phase of the project. Additional reservoir data were to be generated during the demonstration phase to improve the accuracy of the reservoir model. The demonstration phase has been delayed by Goldrus because of funding problems. Since the first of the year, Goldrus has been active in searching for partners to help finance the project. After financial support is obtained, the demonstration phase of the project will proceed. Since just after the beginning of the year, BEG has curtailed project activities and spending of DOE funds except for the continued support of one engineering student. This student has now completed his work and his thesis was reported on in the last semi-annual report. We plan to recommence our work on the project as soon as the operator obtains necessary funding to carry out the demonstration phase of the project. In order to complete all activities specified in the proposal, we requested and received an extension of the project to September 30, 2005. We are confident that Goldrus will obtain the necessary funding to continue and that we can complete the project by the end of the extension data. We strongly believe that the results of this study will provide the impetus for a new approach to enhanced oil recovery in the Permian Basin and elsewhere in the United States.

Robert Loucks; Steve Ruppel; Julia Gale; Jon Holder; Jon Olson

2005-01-01T23:59:59.000Z

305

Disseminated `jigsaw piece' dolomite in Upper Jurassic shelf sandstones, Central North Sea: an example of cement growth  

E-Print Network (OSTI)

of Geology and Geophysics, University of Edinburgh, Grant Institute, West Mains Road, Edinburgh EH9 3JW, UK àIsotope §Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK ABSTRACT Unusual by late diagenetic ankerite, and bulk samples display stable isotope compositions that lie on a mixing

Haszeldine, Stuart

306

Reviving Abandoned Reservoirs with High-Pressure Air Injection: Application in a Fractured and Karsted Dolomite Reservoir  

Science Conference Proceedings (OSTI)

Despite declining production rates, existing reservoirs in the United States contain vast volumes of remaining oil that is not being effectively recovered. This oil resource constitutes a huge target for the development and application of modern, cost-effective technologies for producing oil. Chief among the barriers to the recovery of this oil are the high costs of designing and implementing conventional advanced recovery technologies in these mature, in many cases pressure-depleted, reservoirs. An additional, increasingly significant barrier is the lack of vital technical expertise necessary for the application of these technologies. This lack of expertise is especially notable among the small operators and independents that operate many of these mature, yet oil-rich, reservoirs. We addressed these barriers to more effective oil recovery by developing, testing, applying, and documenting an innovative technology that can be used by even the smallest operator to significantly increase the flow of oil from mature U.S. reservoirs. The Bureau of Economic Geology and Goldrus Producing Company assembled a multidisciplinary team of geoscientists and engineers to evaluate the applicability of high-pressure air injection (HPAI) in revitalizing a nearly abandoned carbonate reservoir in the Permian Basin of West Texas. The Permian Basin, the largest oil-bearing basin in North America, contains more than 70 billion barrels of remaining oil in place and is an ideal venue to validate this technology. We have demonstrated the potential of HPAI for oil-recovery improvement in preliminary laboratory tests and a reservoir pilot project. To more completely test the technology, this project emphasized detailed characterization of reservoir properties, which were integrated to access the effectiveness and economics of HPAI. The characterization phase of the project utilized geoscientists and petroleum engineers from the Bureau of Economic Geology and the Department of Petroleum Engineering (both at The University of Texas at Austin) to define the controls on fluid flow in the reservoir as a basis for developing a reservoir model. The successful development of HPAI technology has tremendous potential for increasing the flow of oil from deep carbonate reservoirs in the Permian Basin, a target resource that can be conservatively estimated at more than 1.5 billion barrels. Successful implementation in the field chosen for demonstration, for example, could result in the recovery of more than 34 million barrels of oil that will not otherwise be produced. Geological and petrophysical analysis of available data at Barnhart field reveals the following important observations: (1) the Barnhart Ellenburger reservoir is similar to most other Ellenburger reservoirs in terms of depositional facies, diagenesis, and petrophysical attributes; (2) the reservoir is characterized by low to moderate matrix porosity much like most other Ellenburger reservoirs in the Permian Basin; (3) karst processes (cave formation, infill, and collapse) have substantially altered stratigraphic architecture and reservoir properties; (4) porosity and permeability increase with depth and may be associated with the degree of karst-related diagenesis; (5) tectonic fractures overprint the reservoir, improving overall connectivity; (6) oil-saturation profiles show that the oil-water contact (OWC) is as much as 125 ft lower than previous estimations; (7) production history and trends suggest that this reservoir is very similar to other solution-gas-drive reservoirs in the Permian Basin; and (8) reservoir simulation study showed that the Barnhart reservoir is a good candidate for HPAI and that application of horizontal-well technology can improve ultimate resource recovery from the reservoir.

Robert Loucks; Stephen C. Ruppel; Dembla Dhiraj; Julia Gale; Jon Holder; Jeff Kane; Jon Olson; John A. Jackson; Katherine G. Jackson

2006-09-30T23:59:59.000Z

307

Ancillary effects of selected acid deposition control policies  

SciTech Connect

NAPAP is examining a number of potential ways to reduce the precursors (sulfur dioxide and nitrogen oxides) to acid deposition. However, the policies to reduce acid deposition will have other physical, biological and economic effects unrelated to acid deposition. For example, control policies that reduce sulfur dioxide emissions may also increase visibility. The effects of an acid deposition policy that are unrelated to acid deposition are referred to as ''ancillary'' effects. This reserch identifies and characterizes the principle physical and economic ancillary effects associated with acid deposition control and mitigation policies. In this study the ancillary benefits associated with four specific acid deposition policy options were investigated. The four policy options investigated are: (1) flue gas desulfurization, (2) coal blending or switching, (3) reductions in automobile emissions of NO/sub x/, and (4) lake liming. Potential ancillary benefits of each option were identified and characterized. Particular attention was paid to the literature on economic valuation of potential ancillary effects.

Moe, R.J.; Lyke, A.J.; Nesse, R.J.

1986-08-01T23:59:59.000Z

308

Two-stage dilute acid prehydrolysis of biomass  

DOE Patents (OSTI)

A two-stage dilute acid prehydrolysis process on xylan containing hemicellulose in biomass is effected by: treating feedstock of hemicellulosic material comprising xylan that is slow hydrolyzable and xylan that is fast hydrolyzable under predetermined low temperature conditions with a dilute acid for a residence time sufficient to hydrolyze the fast hydrolyzable xylan to xylose; removing said xylose from said fast hydrolyzable xylan and leaving a residue; and treating said residue having a slow hydrolyzable xylan with a dilute acid under predetermined high temperature conditions for a residence time required to hydrolyze said slow hydrolyzable xylan to xylose.

Grohmann, Karel (Winter Haven, FL); Torget, Robert W. (Littleton, CO)

1992-01-01T23:59:59.000Z

309

Process for producing peracids from aliphatic hydroxy carboxylic acids  

DOE Patents (OSTI)

A process is disclosed for producing peracids from lactic acid-containing mixtures derived from biomass processing systems. The process includes adjusting the pH of the mixture to about 8 to 9 to form an alkaline precipitate. The alkaline precipitate is then removed therefrom to produce a residual solution containing lower aliphatic hydroxy acids. The residual solution is then oxidized continuously to produce gaseous lower aliphatic aldehydes. The gaseous aldehydes are removed immediately as they are generated to prevent further oxidation to carboxylic acids and are then converted to peracids.

Chum, H.L.; Palasz, P.D.; Ratcliff, M.

1986-05-16T23:59:59.000Z

310

Acid rain: discerning the change in waters and woodlands  

Science Conference Proceedings (OSTI)

The research being done to establish the effects of acid rain on the earth's waters and woods is presented. It is pointed out that definitive answers cannot be possible because of the lack of scientifically credible, consistent, long-term data on trends. Various specific programs now under way to collect adequate data are highlighted. Researchers are not yet able to predict an area's susceptibility to acidic rain damage, but are more confident that acid rain is only a minimal threat to the earth's water and soil ecosystems. 13 figures.

Lihach, N.; Brocksen, R.; Goldstein, R.; Huckabee, J.; Kawaratani, R.; Mattice, J.; Murarka, I.; Perhac, R.

1983-11-01T23:59:59.000Z

311

Human retroviruses and AIDS 1996. A compilation and analysis of nucleic acid and amino acid sequences  

Science Conference Proceedings (OSTI)

This compendium and the accompanying floppy diskettes are the result of an effort to compile and rapidly publish all relevant molecular data concerning the human immunodeficiency viruses (HIV) and related retroviruses. The scope of the compendium and database is best summarized by the five parts that it comprises: (1) Nuclear Acid Alignments and Sequences; (2) Amino Acid Alignments; (3) Analysis; (4) Related Sequences; and (5) Database Communications. Information within all the parts is updated throughout the year on the Web site, http://hiv-web.lanl.gov. While this publication could take the form of a review or sequence monograph, it is not so conceived. Instead, the literature from which the database is derived has simply been summarized and some elementary computational analyses have been performed upon the data. Interpretation and commentary have been avoided insofar as possible so that the reader can form his or her own judgments concerning the complex information. In addition to the general descriptions of the parts of the compendium, the user should read the individual introductions for each part.

Myers, G.; Foley, B.; Korber, B. [eds.] [Los Alamos National Lab., NM (United States). Theoretical Div.] [eds.; Los Alamos National Lab., NM (United States). Theoretical Div.; Mellors, J.W. [ed.] [Univ. of Pittsburgh, PA (United States)] [ed.; Univ. of Pittsburgh, PA (United States); Jeang, K.T. [ed.] [National Institutes of Health, Bethesda, MD (United States). Molecular Virology Section] [ed.; National Institutes of Health, Bethesda, MD (United States). Molecular Virology Section; Wain-Hobson, S. [Pasteur Inst., Paris (France)] [ed.] [Pasteur Inst., Paris (France); ed.

1997-04-01T23:59:59.000Z

312

On the nature and origin of acidic species in petroleum. 1. Detailed acid type distribution in a California crude oil.  

Science Conference Proceedings (OSTI)

Acidity in crude oils has long been a problem for refining. Knowledge of the detailed chemical composition of the acids responsible for corrosion can facilitate identification of problem crude oils and potentially lead to improved processing options for corrosive oils. A highly aerobically biodegraded crude from the San Joaquin Valley, which has a long history of causing corrosion problems during refining, was the subject of this study. The oil was first extracted with base, then acidified and extracted with petroleum ether. A portion of the resulting acid fraction was methylated. The unmethylated extract was analyzed by FTIR, NMR, and the methylated sample was analyzed by high-resolution mass spectrometry (HRMS). Over 96% of the ions observed in HRMS have been assigned reliable formulas. Considerably greater functionality is seen in this sample than would be presumed from the 'naphthenic acid' title typically assigned to these species. Although over 60% of the compounds contained two or more oxygens, compounds containing only oxygen heteroatoms accounted for less than 10% of the acidic compounds identified. Approximately one-half of the species contained nitrogen and about one-fourth contained sulfur. It is believed that microbial degradation is a major source of these acidic components. It was also observed that acid species with higher degrees of heteroatom substitution generally also had a higher degree of saturation than those species having less heteroatoms, possibly due to impeded migration of highly substituted, less-saturated species.

Tomczyk, N. A.; Winans, R. E.; Shinn, J. H.; Robinson, R. C.; Chemistry; Chevron Research and Technology Co.

2001-11-21T23:59:59.000Z

313

Martinez Sulfuric Acid Regeneration Plt Biomass Facility | Open Energy  

Open Energy Info (EERE)

Martinez Sulfuric Acid Regeneration Plt Biomass Facility Martinez Sulfuric Acid Regeneration Plt Biomass Facility Jump to: navigation, search Name Martinez Sulfuric Acid Regeneration Plt Biomass Facility Facility Martinez Sulfuric Acid Regeneration Plt Sector Biomass Facility Type Non-Fossil Waste Location Contra Costa County, California Coordinates 37.8534093°, -121.9017954° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.8534093,"lon":-121.9017954,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

314

Definition: Lead-acid battery | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Lead-acid battery Jump to: navigation, search Dictionary.png Lead-acid battery A type of battery that uses plates made of pure lead or lead oxide for the electrodes and sulfuric acid for the electrolyte.[1] View on Wikipedia Wikipedia Definition Related Terms Battery, electrolyte References ↑ http://www1.eere.energy.gov/solar/solar_glossary.html Retr LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ieved from "http://en.openei.org/w/index.php?title=Definition:Lead-acid_battery&oldid=487934" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

315

Affinity labelling enzymes with esters of aromatic sulfonic acids  

DOE Patents (OSTI)

Novel esters of aromatic sulfonic acids are disclosed. The specific esters are nitrophenyl p- and m-amidinophenylmethanesulfonate. Also disclosed is a method for specific inactivation of the enzyme, thrombin, employing nitrophenyl p-amidinophenylmethanesulfonate.

Wong, Show-Chu (Riverhead, NY); Shaw, Elliott (Shoreham, NY)

1977-01-01T23:59:59.000Z

316

300 Area waste acid treatment system closure plan. Revision 1  

SciTech Connect

This section provides a description of the Hanford Site, identifies the proposed method of 300 Area Waste Acid Treatment System (WATS) closure, and briefly summarizes the contents of each chapter of this plan.

NONE

1996-03-01T23:59:59.000Z

317

Collagen and hyaluronic acid interpenetrating polymer networks for tissue engineering  

E-Print Network (OSTI)

Interpenetrating Polymer Networks (IPNs) represent a strategy for combining the properties of several polymeric materials into a single network. In this thesis, collagen and methacrylated hyaluronic acid are combined in ...

Brigham, Mark D

2007-01-01T23:59:59.000Z

318

trans Fatty Acid Sample Analysis Discussion: A Tutorial Webinar  

Science Conference Proceedings (OSTI)

To ensure laboratories are properly implementing AOCS Official Method Ce 1h-05 when testing for trans fatty acids, AOCS is offering a testing sample kit that includes a webinar tutorial that thoroughly examines this method. trans Fa

319

Acid Leaching of Nickel Laterites with Jarosite Precipitation  

Science Conference Proceedings (OSTI)

Presentation Title, Acid Leaching of Nickel Laterites with Jarosite Precipitation ... shortly after the development of the jarosite process for iron control in zinc refining. ... The Recycling of Cobalt from Alloy Scrap, Spent Batteries or Catalysts and...

320

A Study of the Mechanisms of Acid Rain Formation  

Science Conference Proceedings (OSTI)

Samples of rain, snow, cloud water, aerosols and soil were collected in Colorado to study the mechanisms of acid rain formation. Chemical compositions of various types of samples were analyzed to investigate the stepwise incorporation of ...

Farn Parungo; Clarence Nagamoto; Robin Maddl

1987-11-01T23:59:59.000Z

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


321

Fatty Acid-Producing Microbes for Generating Medium- and Long ...  

... this process results in a heterogeneous mixture of fatty acid esters and unwanted side ... Lennen R.M., Braden D.J., ... (DOE BER Office of Science DE-FC02 ...

322

Structural analysis of hydroxypropylphosphonic acid epoxidase : a fosfomycin biosynthetic enzyme  

E-Print Network (OSTI)

An X-ray crystallographic study of the fosfomycin biosynthetic enzyme hydroxypropylphosphonic acid epoxidase (HppE) from Streptomyces wedmorensis is presented. Structural analysis of this cupin mononuclear iron enzyme in ...

Higgins, Luke J. (Luke James)

2006-01-01T23:59:59.000Z

323

Separation of ions in acidic solution by capillary electrophoresis  

Science Conference Proceedings (OSTI)

Capillary electrophoresis (CE) is an effective method for separating ionic species according to differences in their electrophoretic mobilities. CE separations of amino acids by direct detection are difficult due to their similar electrophoretic mobilities and low absorbances. However, native amino acids can be separated by CE as cations at a low pH by adding an alkanesulfonic acid to the electrolyte carrier which imparts selectivity to the system. Derivatization is unnecessary when direct UV detection is used at 185 nm. Simultaneous speciation of metal cations such as vanadium (IV) and vanadium (V) can easily be performed without complexation prior to analysis. An indirect UV detection scheme for acidic conditions was also developed using guanidine as the background carrier electrolyte (BCE) for the indirect detection of metal cations. Three chapters have been removed for separate processing. This report contains introductory material, references, and general conclusions. 80 refs.

Thornton, M.

1997-10-08T23:59:59.000Z

324

Optimization of Encoded Hydrogel Particles for Nucleic Acid Quantification  

E-Print Network (OSTI)

The accurate quantification of nucleic acids is of utmost importance for clinical diagnostics, drug discovery, and basic science research. These applications require the concurrent measurement of multiple targets while ...

Pregibon, Daniel C.

325

Relationship between acid content of particulates and rainfall in Bangkok  

SciTech Connect

Rainfall at nine stations in Bangkok, Thailand, varied from pH 5.57 to 6.32, low values compared with cities in North America and Europe. Particulate acid content ranged from 5.38 to 10.15 micrograms per cu meter. Analysis for several ions showed that the concentration of sulfate was the controlling factor in acidity of rain. pH was reduced by 1 unit for each 9.09 micrograms per cu meter acid content of particulates according to a relationship derived in the study: pH = 6.87 - 0.11 (acidity of particulates in micrograms per cu meter). 13 references, 3 figures, 2 tables.

Khan, S.M.

1980-01-01T23:59:59.000Z

326

An Overview of Acid Rain Monitoring Activities in North America  

Science Conference Proceedings (OSTI)

The various forms of acidic components that may be deposited from the atmosphere are reviewed. These components are classified into three categories: wet deposition (rain and snow), dry deposition (particles and gases), and special events (dews, ...

Joe Wisniewski; John D. Kinsman

1982-06-01T23:59:59.000Z

327

Low contaminant formic acid fuel for direct liquid fuel cell  

Science Conference Proceedings (OSTI)

A low contaminant formic acid fuel is especially suited toward use in a direct organic liquid fuel cell. A fuel of the invention provides high power output that is maintained for a substantial time and the fuel is substantially non-flammable. Specific contaminants and contaminant levels have been identified as being deleterious to the performance of a formic acid fuel in a fuel cell, and embodiments of the invention provide low contaminant fuels that have improved performance compared to known commercial bulk grade and commercial purified grade formic acid fuels. Preferred embodiment fuels (and fuel cells containing such fuels) including low levels of a combination of key contaminants, including acetic acid, methyl formate, and methanol.

Masel, Richard I. (Champaign, IL); Zhu, Yimin (Urbana, IL); Kahn, Zakia (Palatine, IL); Man, Malcolm (Vancouver, CA)

2009-11-17T23:59:59.000Z

328

Amino acid utilization by Aerobacter aerogenes and Escherichia coli  

E-Print Network (OSTI)

A considerable amount of work has been done on the growth of A. aerogenes and E. coli in synthetic media, but little work has been undertaken on the utilization by these organisms of amino acids as comparative sources of ...

Herrera, Rodolfo Eduardo

1938-01-01T23:59:59.000Z

329

JGI - Why Sequence Euryarchaeota in Acid Mine Drainage?  

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

Euryarchaeota in Acid Mine Drainage? Euryarchaeota in Acid Mine Drainage? Acid mine drainage (AMD) is a major worldwide environmental problem associated with the mining of energy resources (coal and uranium) and metals (eg., iron and copper), thus of direct DOE relevance. The processes that underpin AMD formation can be harnessed for bioleaching and bioremediation. Many scientific and industrial groups are studying various aspects of the biogeochemistry of AMD generation. Random shotgun sequencing of an extremely acidic (pH <0.9) chemolithotrophic subsurface AMD biofilm community (from the Richmond Mine in Iron Mountain, California) recovered a genome fragment from a novel euryarchaeon, named WTF-1. This novel lineage was previously missed by common broad-specificity primers used for PCR-based surveys. Further study

330

Pretreatment and Fermentation of Sugarcane Trash to Carboxylic Acids  

E-Print Network (OSTI)

The rising price of oil is hurting consumers all over the world. There is growing interest in producing biofuels from non-food crops, such as sugarcane trash. Lignocellulosic biomass (e.g., sugarcane trash) is an abundant, inexpensive, and renewable resource. The patented MixAlco process is a cost-effective solution, which does not require sterility or the addition of expensive enzymes to convert lignocellulosic biomass to transportation fuels and valuable chemicals. In this study, the MixAlco process was used to convert sugarcane trash to carboxylic acids under thermophilic conditions. Lime-treated sugarcane trash (80%) and chicken manure (20%) was used as the feedstock in rotary 1-L fermentors. Ammonium bicarbonate buffer was used to mitigate the effects of product (carboxylic acid) inhibition. Marine inoculum was used because of the high adaptability of the mixed culture of microorganisms present. Iodoform solution was added to inhibit methanogenesis. Preliminary batch studies over a 20-day period produced 19.7 g/L of carboxylic acids. Sugarcane trash had the highest average yield (0.31 g total acid/g VS fed) and highest average conversion (0.70 g VS digested/g VS fed) among the three substrates compared. Countercurrent fermentations were performed at various volatile solid loading rates (VSLR) and liquid residence times (LRT). The highest acid productivity of 1.40 g/(L?d) was at a total acid concentration of 29.9 g/L. The highest conversion and yield were 0.64 g VS digested/g VS fed and 0.36 g total acid/g VS fed, respectively. The continuum particle distribution model (CPDM) was used to predict acid concentration at various VSLR and LRT. The average error in between the predicted and experimental acid concentration and conversion were 4.62% and 1.42%, respectively. The effectiveness of several pretreatment methods was evaluated using the CPDM method. The best-performing method was short-term, no-wash, oxidative lime pretreatment with ball milling. At an industrial-scale solids loading of 300 g VS/L liquid, the CPDM ?map? predicts a total acid concentration of 64.0 g/L at LRT of 30 days, VSLR of 7 g/(L?d), and conversion of 57%. Also high conversion of 76% and high acid concentration of 52 g/L are achieved at a VSLR of 4 g/(L?d) and LRT of 30 days.

Nachiappan, Balasubraman

2008-12-01T23:59:59.000Z

331

Amino acid biosignatures : implications for the detection of extinct or extant microbial communities on Mars  

E-Print Network (OSTI)

Space Agency gas chromatography mass spectrometry gamma-amino-n-butyric acid water hydrochloric acid isobutylamine isopropylamine NASA/CalTech Jet Propulsion

Aubrey, Andrew D.

2008-01-01T23:59:59.000Z

332

Amino Acid Biosignatures - Implications for the Detection of Extinct or Extant Microbial Communities on Mars  

E-Print Network (OSTI)

Space Agency gas chromatography mass spectrometry gamma-amino-n-butyric acid water hydrochloric acid isobutylamine isopropylamine NASA/CalTech Jet Propulsion

Aubrey, Andrew D

2008-01-01T23:59:59.000Z

333

Recovery of carboxylic acids from water by precipitation from organic solutions  

DOE Patents (OSTI)

Carboxylic acids are recovered from wet organic solutions by reducing the solutions' water content thus causing the acids to precipitate as recoverable crystals.

King, C. Judson (Kensington, CA); Starr, John (Albany, CA)

1992-01-01T23:59:59.000Z

334

Acid-base chemical reaction model for nucleation rates in the...  

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

Acid-base chemical reaction model for nucleation rates in the polluted atmospheric boundary layer Title Acid-base chemical reaction model for nucleation rates in the polluted...

335

M-1: Acid Cleaning of Titanium Based Scales Formed on Preheaters ...  

Science Conference Proceedings (OSTI)

This paper reports an acid formulation which is best suited for titanium based scales. ... Extracting Alumina from Coal Fly Ash Using Acid Sintering-Leaching...

336

A Study on Acid-Base Equilibria in (N-Butylamine + Acetic ...  

Science Conference Proceedings (OSTI)

Page 1. A Study on Acid-Base Equilibria in (N-Butylamine + Acetic Acid) Systems in Binary (Dimethyl Sulfoxide + 1,4-Dioxane) Solvent Mixtures ...

2006-07-20T23:59:59.000Z

337

Effect of leavening acids on wheat flour tortillas  

E-Print Network (OSTI)

Reactivities of four leavening adds were evaluated during processing of wheat flour tortillas. These were: sodium aluminum phosphate (SAlP), sodium aluminum sulfate (SAS), monocalcium phosphate (MCP) and sodium acid pyrophosphate (SAPP-28). Each leavening acid was first evaluated in combination with sodium bicarbonate at different levels, controlling dough temperature at 38'C. Individual leavening acids did not yield optimum dough properties and had pH higher than 6.0, except for MCP treatments. Higher amounts of MCP and SAPP-28 were required to produce opaque tortillas compared to those treatments containing SAIP and SAS. Ionic interactions apparently affected elastic and viscous behaviours of doughs. The second study inculded fumaric acid along with each leavening acid at 380C. Fumaric acid effectively reduced resting times and pH of tortillas, except for doughs containing MCP. Addition of fumaric tortillas over time. To evaluate the effect of temperature 34 and 38'C were selected . At 38'C additional leavening was required, except for doughs containing SAS. At 380C dough properties tended to improve. Increasing temperature increased pH for SAIP and MCP treatments. SAIP and SAS treatments produced opaque tortillas. Increased dough temperature improved storage stability of tortillas for SALP and SAS treatments; no significant effect was observed for MCP and SAPP-28 treatments. Combination of MCP:SAIP (1:5) produced target dough and tortilla properties. Combination of MCP:SAS (1:2) produced acceptable dough properties and tortillas with diameters smaller than 17.0 cm. MCP, a fast reacting leavening acid, improved nucleation during mixing, giving the final product a better texture. Hence, to produce tortillas with desirable characteristics, leavening acids that dissolve and react during mixing and baking are required.

Cepeda, Minerva

1995-01-01T23:59:59.000Z

338

Valve Regulated Lead Acid (VRLA) Battery Qualification Assessment  

Science Conference Proceedings (OSTI)

Valve-regulated lead acid (VRLA) batteries have been proposed as a prospective dc power source for Class 1E service in passive nuclear plants. However, they are not currently covered by IEEE Standard 535, which addresses qualification for this service. Furthermore, there are reports of significant failure modes or mechanisms beyond the predominant failure mode of grid corrosion of the positive plate associated with vented lead acid (VLA) batteries.

2009-11-06T23:59:59.000Z

339

Polypeptide having an amino acid replaced with N-benzylglycine  

DOE Patents (OSTI)

The present invention relates to one or more polypeptides having useful biological activity in a mammal, which comprise: a polypeptide related to bradykinin of four to ten amino acid residues wherein one or more specific amino acids in the polypeptide chain are replaced with achiral N-benzylglycine. These polypeptide analogues have useful potent agonist or antagonist pharmacological properties depending upon the structure. A preferred polypeptide is (N-benzylglycine.sup.7)-bradykinin.

Mitchell, Alexander R. (Livermore, CA); Young, Janis D. (Los Angeles, CA)

1996-01-01T23:59:59.000Z

340

Process for producing peracids from aliphatic hydroxy carboxylic acids  

DOE Patents (OSTI)

A process for producing peracids from lactic acid-containing solutions derived from biomass processing systems comprising: adjusting the pH of the solution to about 8-9 and removing alkaline residue fractions therefrom to form a solution comprised substantially of lower aliphatic hydroxy acids; oxidizing the solution to produce volatile lower aliphatic aldehydes; removing said aldehydes as they are generated; and converting said aldehydes to peracids.

Chum, Helena L. (Arvada, CO); Ratcliff, Matthew A. (Lakewood, CO); Palasz, Peter D. (Lakewood, CO)

1986-01-01T23:59:59.000Z

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


341

Process for producing peracids from aliphatic hydroxy carboxylic acids  

DOE Patents (OSTI)

A process is described for producing peracids from lactic acid-containing solutions derived from biomass processing systems. It consists of adjusting the pH of the solution to about 8 to 9 and removing alkaline residue fractions therefrom to form a solution comprised substantially of lower aliphatic hydroxy acids. The solution is oxidized to produce volatile lower aliphatic aldehydes. The aldehydes are removed as they are generated and converted to peracids.

Chum, H.L.; Palasz, P.D.; Ratcliff, M.A.

1984-12-20T23:59:59.000Z

342

Anaerobic microbial dissolution of lead and production of organic acids  

DOE Patents (OSTI)

The present invention related to an anaerobic bacterial culture of Clostridium sp. ATCC No. 53464 which solubilizes lead oxide under anaerobic conditions in coal and industrial wastes and therefore presents a method of removing lead from such wastes before they are dumped into the environment. The rat of lead dissolution during logarithmic growth of the bacteria in 40 ml medium containing 3.32 ..mu..moles of lead as lead oxide was 0.042 ..mu..moles m1/sup /-/1/ hr/sup /-/1/. Dissolution of lead oxide by the bacterial isolate is due to the production of metabolites and acidity in the culture medium. The major metabolites are acetic, butyric and lactic acid. The major metabolites are acetic, butyric and lactic acid. Clostridium sp. ATCC No. 53464 can be used in the recovery of the strategic metals from ores and wastes and also for the production of lactic acid for commercial purposes. The process yields large quantities of lactic acid as well as lead complexed in a stable form with said acids. 4 figs., 3 tabs.

Francis, A.J.; Dodge, C.; Chendrayan, K.; Quinby, H.L.

1987-04-16T23:59:59.000Z

343

Commercial Alloys for Sulfuric Acid Vaporization in Thermochemical Hydrogen Cycles  

DOE Green Energy (OSTI)

Most thermochemical cycles being considered for producing hydrogen include a processing stream in which dilute sulfuric acid is concentrated, vaporized and then decomposed over a catalyst. The sulfuric acid vaporizer is exposed to highly aggressive conditions. Liquid sulfuric acid will be present at a concentration of >96 wt% (>90 mol %) H2SO4 and temperatures exceeding 400oC [Brown, et. al, 2003]. The system will also be pressurized, 0.7-3.5 MPa, to keep the sulfuric acid in the liquid state at this temperature and acid concentration. These conditions far exceed those found in the commercial sulfuric acid generation, regeneration and handling industries. Exotic materials, e.g. ceramics, precious metals, clad materials, etc., have been proposed for this application [Wong, et. al., 2005]. However, development time, costs, reliability, safety concerns and/or certification issues plague such solutions and should be considered as relatively long-term, optimum solutions. A more cost-effective (and relatively near-term) solution would be to use commercially-available metallic alloys to demonstrate the cycle and study process variables. However, the corrosion behavior of commercial alloys in sulfuric acid is rarely characterized above the natural boiling point of concentrated sulfuric acid (~250oC at 1 atm). Therefore a screening study was undertaken to evaluate the suitability of various commercial alloys for concentration and vaporization of high-temperature sulfuric acid. Initially alloys were subjected to static corrosion tests in concentrated sulfuric acid (~95-97% H2SO4) at temperatures and exposure times up to 200oC and 480 hours, respectively. Alloys with a corrosion rate of less than 5 mm/year were then subjected to static corrosion tests at a pressure of 1.4 MPa and temperatures up to 375oC. Exposure times were shorter due to safety concerns and ranged from as short as 5 hours up to 144 hours. The materials evaluated included nickel-, iron- and cobalt-based commercial alloys. The corrosion rates in these tests are reported and how they may or may not relate to the corrosion behavior in an operating thermochemical cycle is discussed.

Thomas M. Lillo; Karen M. Delezene-Briggs

2005-10-01T23:59:59.000Z

344

Arginine and Conjugated Linoleic Acid Reduce Fat Mass in Rats  

E-Print Network (OSTI)

We hypothesized that subcutaneous (s.c.) adipose tissue would differ in monounsaturated (MUFA) and saturated fatty acid (SFA) composition among different depots throughout a beef carcass. To test this, 50 carcasses from a variety of breed types and backgrounds were sampled. External fat samples were collected from eight different carcass locations: round, sirloin, loin, rib, chuck, brisket, plate and flank. Samples were used to provide information on slip points, fatty acid composition and MUFA:SFA ratios. Lipids were extracted from s.c. adipose tissue by a modified chloroform:methanol procedure, and fatty acid composition and slip points were measured. The brisket was significantly lower in palmitic (16:0) and stearic (18:0) acid than the other seven sampling sites (P = 0.001). The brisket demonstrated the highest values of MUFA (P = 0.001) with the exception of possessing the lowest value of transvaccenic (18:1t11) acid (P = 0.002). There were also significant differences in the amounts of PUFA among the eight sampling sites. The lowest values were from the brisket with a mean of 25.1. The flank had the highest slip point with a mean of 39.0 (P ? 0.001). There was a high negative correlation shown between palmitoleic and stearic acid (R2 = 0.827). The brisket displayed the highest values for MUFA:SFA ratios (P = 0.001), whereas the flank was the lowest. Due to the significant differences amongst fat depots within bovine carcasses in their fatty acid composition we conclude that substantial differences exist across fat depots.

Nall, Jennifer L.

2008-05-01T23:59:59.000Z

345

Oligonucleoside alkyl or arylphosphonate derivatives capable of crosslinking with or cleaving nucleic acids  

DOE Patents (OSTI)

A composition for inactivating a target nucleic acid which comprises an oligonucleoside alkyl or arylphosphonate analogue which is complementary to the sequence of the target nucleic acid is provided. It includes a functional group which reacts with the target nucleic acid to render the target nucleic acid inactive or nonfunctional. 16 figs.

Miller, P.S.; Ts' o, P.O.P.

1999-06-15T23:59:59.000Z

346

A Study on Biogas from Anaerobic Digestion with the Distiller's Grains via Lactic Acid Fermentation  

Science Conference Proceedings (OSTI)

The methane production of the distillers grains via lactic acid fermentation (shorter for the fermentation residue) was investigated, and the variable trend of pH values, alkali concentration and volatile fatty acids were examined. The results ... Keywords: the residue of distillers' grains via lactic acid fermentation, biomass wastes, anaerobic digestion, volatile fatty acids, biogas production

Li-Hong Wang; Wang Qunhui; Sun Xiaohong; Xin Zhao

2010-12-01T23:59:59.000Z

347

Photodissociation spectroscopy of the Mg{sup +}-acetic acid complex  

Science Conference Proceedings (OSTI)

We have studied the structure and photodissociation of Mg{sup +}-acetic acid clusters. Ab initio calculations suggest four relatively strongly bound ground state isomers for the [MgC{sub 2}H{sub 4}O{sub 2}]{sup +} complex. These isomers include the cis and trans forms of the Mg{sup +}-acetic acid association complex with Mg{sup +} bonded to the carbonyl O atom of acetic acid, the Mg{sup +}-acetic acid association complex with Mg{sup +} bonded to the hydroxyl O atom of acetic acid, or to a Mg{sup +}-ethenediol association complex. Photodissociation through the Mg{sup +}-based 3p<-3s absorption bands in the near UV leads to direct (nonreactive) and reactive dissociation products: Mg{sup +}, MgOH{sup +}, Mg(H{sub 2}O){sup +}, CH{sub 3}CO{sup +}, and MgCH{sub 3}{sup +}. At low energies the dominant reactive quenching pathway is through dehydration to Mg(H{sub 2}O){sup +}, but additional reaction channels involving C-H and C-C bond activation are also open at higher energies.

Abate, Yohannes; Kleiber, P. D. [Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242 and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242 (United States)

2006-11-14T23:59:59.000Z

348

The effect of ascetic acid on mammalian cells  

SciTech Connect

Effects of the contrast agent, acetic acid, on mammalian cells are studied using light scattering measurements, viability and fluorescence pH assays. Results depend on whether cells are in PBS or are live and metabolizing. Acetic acid is a contrast agent used to aid the detection of cancerous and precancerous lesions of the uterine cervix. Typically 3% or 5% acetic acid is applied to the swface of the cervix and areas of the tissue that turn 'acetowhite' are considered more likely to be precancerous. The mechanism of action of acetic acid has never been understood in detail, although there are several hypotheses. One is that a decrease in pH causes cytokeratins in epithelial cells to polymerize. We will present data demonstrating that this is not the sole mechanism of acetowhitening. Another hypothesis is that a decrease in pH in the nucleus causes deacetylation of the histones which in turn results in a dense chromatin structure. Relevant to this hypothesis we have measured the internal pH of cells. Additional goals of this work are to understand what physical changes result in acetowhitening, to understand why there is variation in how cells respond to acetic acid, and to investigate how acetowhitening affects the light scatter properties measured by a fiber-optic probe we have developed for cervical cancer diagnostics.

Mariana, Oana C [Los Alamos National Laboratory; Trujillo, Antoinette [Los Alamos National Laboratory; Sanders, Claire K [Los Alamos National Laboratory; Burnett, Kassidy S [Los Alamos National Laboratory; Freyer, James P [Los Alamos National Laboratory; Mourant, Judith R [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

349

Different Protonation Equilibria of 4-Methylimidazole and Acetic Acid  

SciTech Connect

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. Dynamic protonation equilibria in water of one 4-methylimidazole molecule as well as for pairs and groups consisting of 4- methylimidazole, acetic acid and bridging water molecules are studied using Q-HOP molecular dynamics simulation. We find a qualitatively different protonation behavior of 4-methylimidazole compared to that of acetic acid. On one hand, deprotonated, neutral 4-methylimidazole cannot as easily attract a freely diffusing extra proton from solution. Once the proton is bound, however, it remains tightly bound on a time scale of tens of nanoseconds. In a linear chain composed of acetic acid, a separating water molecule and 4-methylimidazole, an excess proton is equally shared between 4-methylimidazole and water. When a water molecule is linearly placed between two acetic acid molecules, the excess proton is always found on the central water. On the other hand, an excess proton in a 4-methylimidazole-water- 4-methylimidazole chain is always localized on one of the two 4- methylimidazoles. These findings are of interest to the discussion of proton transfer along chains of amino acids and water molecules in biomolecules.

Gu, Wei; Helms, Volkhard H.

2007-12-03T23:59:59.000Z

350

Anaerobic microbial dissolution of lead and production of organic acids  

DOE Patents (OSTI)

The present invention relates to an anaerobic bacterial culture of Clostridium sp. ATCC No. 53464 which solubilizes lead oxide under anaerobic conditions in coal and industrial wastes and therefore presents a method of removing lead from such wastes before they are dumped into the environment. The rate of lead dissolution during logarithmic growth of the bacteria in 40 ml medium containing 3.32 .mu.moles of lead as lead oxide was 0.042 .mu.moles ml.sup.-1 hr.sup.-1. Dissolution of lead oxide by the bacterial isolate is due to the production of metabolites and acidity in the culture medium. The major metabolites are acetic, butyric and lactic acid. Clostridium sp. ATCC No. 53464 can be used in the recovery of strategic metals from ores and wastes and also for the production of lactic acid for commercial purposes. The process yields large quantities of lactic acid as well as lead complexed in a stable form with said acids.

Francis, Arokiasamy J. (Middle Island, NY); Dodge, Cleveland (Wading River, NY); Chendrayan, Krishnachetty (Coimbatore Tamil Nadu, IN); Quinby, Helen L. (Cambridge, MD)

1988-01-01T23:59:59.000Z

351

A shape memory stent of poly(e-caprolactone-co-DL-lactide) copolymer for potential treatment of esophageal stenosis  

E-Print Network (OSTI)

flour (wheat flour, niacin, reduced iron, thiamin, monoitrate, riboflavin, folate) - sugar - soy flour

Grunlan, Melissa A.

352

Virtual Grids: Resource Abstractions for Grid Applications 8/9/2004 The Virtual Grid Description Language: vgDL  

E-Print Network (OSTI)

of distributed grid application? - What resource models are sufficient to enable expression by the programmer CNode Execution DatabasesDatabases Figure 5. Parallel Workers and Databases EOL (EOL3) Smart-Distributed Databases Databases Figure 6. Smart-Distributed EOL (EOL4) Data Smart Distributed EOL (EOL5) EOL5 has all

Chien, Andrew A.

353

Advances in Conjugated Linoleic Acid Research, Volume 3Chapter 11 An Overview of the Effects of Conjugated Linoleic Acid on Body Weight and Body Composition in Humans  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 11 An Overview of the Effects of Conjugated Linoleic Acid on Body Weight and Body Composition in Humans Downloadable pdf of Chapter 11 An Ove

354

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 3 Application of Silver-Ion Chromatography to the Separation of Conjugated Linoleic Acid Isomers  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 3 Application of Silver-Ion Chromatography to the Separation of Conjugated Linoleic Acid Isomers Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry A5EF

355

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 7 Reversed-Phase HPLC Analysis of Conjugated Linoleic Acid and Its Metabolites  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 7 Reversed-Phase HPLC Analysis of Conjugated Linoleic Acid and Its Metabolites Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry AOCS Press ...

356

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 16 Conjugated Linoleic Acids as Anticancer Nutrients: Studies In Vivo and Cellular Mechanisms  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 16 Conjugated Linoleic Acids as Anticancer Nutrients: Studies In Vivo and Cellular Mechanisms Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry AOCS Pr

357

Advances in Conjugated Linoleic Acid Research, Volume 3Chapter 4 Systematic Analysis of trans and Conjugated Linoleic Acids in Milk and Meat of Ruminants  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 4 Systematic Analysis of trans and Conjugated Linoleic Acids in Milk and Meat of Ruminants Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press

358

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 19 Conjugated Linoleic Acids in Type 2 Diabetes Mellitus: Implications and Potential Mechanisms  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 19 Conjugated Linoleic Acids in Type 2 Diabetes Mellitus: Implications and Potential Mechanisms Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry AOCS

359

Single Cell Oils: Microbial and Algal Oils, 2nd EditionChapter 16 Nutritional Aspects of Single Cell Oils: Applications of Arachidonic Acid and Docosahexaenoic Acid Oils  

Science Conference Proceedings (OSTI)

Single Cell Oils: Microbial and Algal Oils, 2nd Edition Chapter 16 Nutritional Aspects of Single Cell Oils: Applications of Arachidonic Acid and Docosahexaenoic Acid Oils Biofuels and Bioproducts and Biodiesel Biofuels - Bioproducts ...

360

Fatty Acids in Health Promotion and Disease CausationChapter 5 Fatty Acids in Corn Oil: Role in Heart Disease Prevention  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 5 Fatty Acids in Corn Oil: Role in Heart Disease Prevention Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf ...

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


361

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 17 Conjugated Linoleic Acid Enhances Immune Repsonses but Protects Against the Collateral Damage of Immune Events  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 17 Conjugated Linoleic Acid Enhances Immune Repsonses but Protects Against the Collateral Damage of Immune Events Health Nutrition Biochemistry eChapters Health - Nutrition - B

362

Fatty Acids in Health Promotion and Disease CausationChapter 20 Effects of Dietary Fatty Acids on Human Microbes: Role in Health  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 20 Effects of Dietary Fatty Acids on Human Microbes: Role in Health Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadab

363

Fatty Acids in Health Promotion and Disease CausationChapter 28 Dietary Fat and Fatty Acids in Exercise and Athletic Performance  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 28 Dietary Fat and Fatty Acids in Exercise and Athletic Performance Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadab

364

Fatty Acids in Health Promotion and Disease CausationChapter 22 Fatty Acids in Immunomodulation: Role in Disease Prevention and Causation  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 22 Fatty Acids in Immunomodulation: Role in Disease Prevention and Causation Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press D

365

Fatty Acids in Health Promotion and Disease CausationChapter 15 Trans Fatty Acids and Oxidative Transformations by Free Radicals: The Role in Health  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 15 Trans Fatty Acids and Oxidative Transformations by Free Radicals: The Role in Health Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press ...

366

Fatty Acids in Health Promotion and Disease CausationChapter 29 Omega-3 versus Omega-6 Fatty Acid Intake and Immunity  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 29 Omega-3 versus Omega-6 Fatty Acid Intake and Immunity Health Nutrition Biochemistry Omega 3 eChapters Health - Nutrition - Biochemistry Press Downloadable

367

Fatty Acids in Health Promotion and Disease CausationChapter 8 Free Fatty Acids: Role in Insulin Resistance, Type 2 Diabetes, and Cardiovascular Disease  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 8 Free Fatty Acids: Role in Insulin Resistance, Type 2 Diabetes, and Cardiovascular Disease Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press

368

Fatty Acids in Health Promotion and Disease CausationChapter 18 Fatty Acids in Membrane Lipids: Role in Disease Causation and Prevention  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 18 Fatty Acids in Membrane Lipids: Role in Disease Causation and Prevention Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Do

369

Fatty Acids in Health Promotion and Disease CausationChapter 23 Modulation of Cytokine Action by Fatty Acids: Role in Health  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 23 Modulation of Cytokine Action by Fatty Acids: Role in Health Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable p

370

Fatty Acids in Health Promotion and Disease CausationChapter 13 Trans and Other Fatty Acids: Role in Diabetic Disease and Health  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 13 Trans and Other Fatty Acids: Role in Diabetic Disease and Health Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadab

371

Fatty Acids in Health Promotion and Disease CausationChapter 14 Effect of Dietary Long-chain Polyunsaturated Fatty Acids in Infancy on Both Visual and Neural Development  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 14 Effect of Dietary Long-chain Polyunsaturated Fatty Acids in Infancy on Both Visual and Neural Development Health Nutrition Biochemistry eChapters Health - Nutrition - Bioch

372

Fatty Acids in Health Promotion and Disease CausationChapter 24 From ADHD to Alzheimers: Omega-3 Fatty Acids and Mental Health  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 24 From ADHD to Alzheimers: Omega-3 Fatty Acids and Mental Health Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadabl

373

Fatty Acids in Health Promotion and Disease CausationChapter 9 Gender Differences in Gene Expression Due to Fatty Acids: Role in Atherosclerosis and Cardiovascular Disease  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 9 Gender Differences in Gene Expression Due to Fatty Acids: Role in Atherosclerosis and Cardiovascular Disease Health Nutrition Biochemistry eChapters Health - Nutrition - Bio

374

Fatty Acids in Health Promotion and Disease CausationChapter 30 Omega-3 Long-chain Polyunsaturated Fatty Acids and Obesity  

Science Conference Proceedings (OSTI)

Fatty Acids in Health Promotion and Disease Causation Chapter 30 Omega-3 Long-chain Polyunsaturated Fatty Acids and Obesity Health Nutrition Biochemistry Omega 3 eChapters Health - Nutrition - Biochemistry Press Downloa

375

Advances in Conjugated Linoleic Acid Research, Vol 2Chapter 4 Oxidation of Conjugated Linoleic Acid: Initiators and Simultaneous Reactions: Theory and Practice  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Vol 2 Chapter 4 Oxidation of Conjugated Linoleic Acid: Initiators and Simultaneous Reactions: Theory and Practice Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry A

376

300 Area waste acid treatment system closure plan  

SciTech Connect

The Hanford Facility Dangerous Waste Permit Application is considered to be a single application organized into a General Information Portion (document number DOERL-91-28) and a Unit-Specific Portion. The scope of the Unit-Specific Portion includes closure plan documentation submitted for individual, treatment, storage, and/or disposal units undergoing closure, such as the 300 Area Waste Acid Treatment System. Documentation contained in the General Information Portion is broader in nature and could be used by multiple treatment, storage, and/or disposal units (e.g., the glossary provided in the General Information Portion). Whenever appropriate, 300 Area Waste Acid Treatment System documentation makes cross-reference to the General Information Portion, rather than duplicating text. This 300 Area Waste Acid Treatment System Closure Plan (Revision 2) includes a Hanford Facility Dangerous Waste Permit Application, Part A, Form 3. Information provided in this closure plan is current as of April 1999.

LUKE, S.N.

1999-05-17T23:59:59.000Z

377

High Level Waste System Impacts from Acid Dissolution of Sludge  

DOE Green Energy (OSTI)

This research evaluates the ability of OLI{copyright} equilibrium based software to forecast Savannah River Site High Level Waste system impacts from oxalic acid dissolution of Tank 1-15 sludge heels. Without further laboratory and field testing, only the use of oxalic acid can be considered plausible to support sludge heel dissolution on multiple tanks. Using OLI{copyright} and available test results, a dissolution model is constructed and validated. Material and energy balances, coupled with the model, identify potential safety concerns. Overpressurization and overheating are shown to be unlikely. Corrosion induced hydrogen could, however, overwhelm the tank ventilation. While pH adjustment can restore the minimal hydrogen generation, resultant precipitates will notably increase the sludge volume. OLI{copyright} is used to develop a flowsheet such that additional sludge vitrification canisters and other negative system impacts are minimized. Sensitivity analyses are used to assess the processability impacts from variations in the sludge/quantities of acids.

KETUSKY, EDWARD

2006-04-20T23:59:59.000Z

378

Advanced lead-acid batteries for utility applications  

SciTech Connect

During 1990, Sandia National Laboratories initiated an advanced lead-acid battery development program supported by the US Department of Energy's Office of Energy Management. The goal is to develop a low maintenance, cost effective battery by the mid- to late 1990's that is tailored to a variety of electric utility applications. Several parallel activities are being pursued to achieve this goal. One activity seeks to quantify the economic benefits of battery storage for specific cases in candidate utility systems and identify opportunities for field demonstration of battery systems at electric utility and utility customer sites. Such demonstrations will not only generate valuable operating experience data, but will also help in building user confidence in battery storage systems. Other activities concentrate on cell- and battery-level research and development aimed at overcoming shortcomings in existing technologies, such as Valve-Regulated Lead-Acid (VRLA), or, sealed lead-acid batteries.

Akhil, A. (Sandia National Labs., Albuquerque, NM (USA)); Landgrebe, A. (USDOE, Washington, DC (USA))

1991-01-01T23:59:59.000Z

379

ELECTROLYTIC DISINTEGRATION OF ZIRCALOY-2 IN NITRIC ACID SOLUTIONS  

SciTech Connect

Zircaloy-2 is anodically converted to scaly ZrO/sub 2/ at 60 deg C in 8 M HNO/sub 3/. About 0.5 mole of acid is consumed per faraday, and after saturation of the electrolyte with nitrogen oxides about 0.3 mole of gas is evolved per faraday. The nitric acid is reduced to hydrogen, NO, and N0/sub 2/, with hydrogen predominating if the cathode is Zircaloy and NO if the cathode is platinum. Corrosion specimens of HRT metals were exposed to the electrolysis conditions. From determinations of the decomposition potential of nitric acid it appears that a metal container for the electrolytic process can be protected from stray-current corrosion by holdlng it at a potential --0.5 volt positive to a platinum cathode operating at a current density of 5 to 10 ma/cm/sup 2/. Practical laboratory experiments tended to confirm this conclusion. (auth)

Clark, W.E.; Peterson, S.

1959-11-27T23:59:59.000Z

380

Two-stage dilute acid prehydrolysis of biomass  

DOE Patents (OSTI)

The invention relates to a two stage dilute acid prehydrolysis of biomass for solubilization of hemicellulosic sugars and a pretreatment for enzymatic hydrolysis of cellulose. In particular, the invention pertains to a two stage dilute acid prehydrolysis treatment of a feedstock of hemicellulosic material comprising xylan that is slow hydrolyzable and xylan that is fast hydrolyzable under low temperature conditions to hydrolyze said fast hydrolyzable xylan to xylose; removing said xylose and leaving a feedstock residue containing said slow hydrolyzable xylan; treating said residue containing said slow hydrolyzable xylan with a dilute organic or inorganic acid under temperature conditions higher than said low temperature conditions to hydrolyze said slow hydrolyzable xylan to xylose, and removing said xylose.

Grohmann, K.; Torget, R.W.

1991-04-08T23:59:59.000Z

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


381

Advanced lead-acid batteries for utility applications  

SciTech Connect

During 1990, Sandia National Laboratories initiated an advanced lead-acid battery development program supported by the US Department of Energy's Office of Energy Management. The goal is to develop a low maintenance, cost effective battery by the mid- to late 1990's that is tailored to a variety of electric utility applications. Several parallel activities are being pursued to achieve this goal. One activity seeks to quantify the economic benefits of battery storage for specific cases in candidate utility systems and identify opportunities for field demonstration of battery systems at electric utility and utility customer sites. Such demonstrations will not only generate valuable operating experience data, but will also help in building user confidence in battery storage systems. Other activities concentrate on cell- and battery-level research and development aimed at overcoming shortcomings in existing technologies, such as Valve-Regulated Lead-Acid (VRLA), or, sealed lead-acid batteries.

Akhil, A. (Sandia National Labs., Albuquerque, NM (USA)); Landgrebe, A. (USDOE, Washington, DC (USA))

1991-01-01T23:59:59.000Z

382

Characterization and analysis of the cotton cyclopropane fatty acid synthase family and their contribution to cyclopropane fatty acid synthesis  

Science Conference Proceedings (OSTI)

Cyclopropane fatty acids (CPA) have been found in certain gymnosperms, Malvales, Litchi and other Sapindales. The presence of their unique strained ring structures confers physical and chemical properties characteristic of unsaturated fatty acids with the oxidative stability displayed by saturated fatty acids making them of considerable industrial interest. While cyclopropenoid fatty acids (CPE) are well-known inhibitors of fatty acid desaturation in animals, CPE can also inhibit the stearoyl-CoA desaturase and interfere with the maturation and reproduction of some insect species suggesting that in addition to their traditional role as storage lipids, CPE can contribute to the protection of plants from herbivory. Three genes encoding cyclopropane synthase homologues GhCPS1, GhCPS2 and GhCPS3 were identified in cotton. Determination of gene transcript abundance revealed differences among the expression of GhCPS1, 2 and 3 showing high, intermediate and low levels, respectively, of transcripts in roots and stems; whereas GhCPS1 and 2 are both expressed at low levels in seeds. Analyses of fatty acid composition in different tissues indicate that the expression patterns of GhCPS1 and 2 correlate with cyclic fatty acid (CFA) distribution. Deletion of the N-terminal oxidase domain lowered GhCPS's ability to produce cyclopropane fatty acid by approximately 70%. GhCPS1 and 2, but not 3 resulted in the production of cyclopropane fatty acids upon heterologous expression in yeast, tobacco BY2 cell and Arabidopsis seed. In cotton GhCPS1 and 2 gene expression correlates with the total CFA content in roots, stems and seeds. That GhCPS1 and 2 are expressed at a similar level in seed suggests both of them can be considered potential targets for gene silencing to reduce undesirable seed CPE accumulation. Because GhCPS1 is more active in yeast than the published Sterculia CPS and shows similar activity when expressed in model plant systems, it represents a strong candidate gene for CFA accumulation via heterologous expression in production plants.

Yu X. H.; Shanklin J.; Rawat, R.

2011-05-01T23:59:59.000Z

383

Review Article Activities of Heterogeneous Acid-Base Catalysts for Fragrances Synthesis: A Review  

E-Print Network (OSTI)

This paper reviews various types of heterogeneous acid-base catalysts for fragrances preparation. Catalytic activities of the various types of heterogeneous acid and base catalysts in fragrances preparation, i.e. nonzeolitic, zeolitic, and mesoporous molecular sieves, have been reported. Generally, heterogeneous acid catalysts are more commonly used in fragrance synthesis as compared to heterogeneous base catalysts. Heteropoly acids and hydrotalcites type catalysts are widely used as heterogeneous acid and base catalysts, respectively. 2013 BCREC UNDIP. All rights reserved.

H. Hartati; Mardi Santoso; Sugeng Triwahyono; Didik Prasetyoko

2013-01-01T23:59:59.000Z

384

Sludge recycle and reuse in acid mine drainage treatment  

Science Conference Proceedings (OSTI)

Neutralization of acid mine drainage produces vast quantities of iron-rich sludge, and large quantities of unused lime remain in the sludge after treatment. In a study in which sludge was recycled to increase lime utilization, sludge was mixed with raw acid mine drainage and settled out in an intermediate clarifier. The clarifier supernatant was then treated by lime addition, aeration and sedimentation. The low-pH sludge was withdrawn from the intermediate clarifier. The iron was recovered by acidification and used as wastewater coagulant. The recycle scheme resulted in a 30% decrease in lime requirements, and the resultant coagulant performed well when compared with stock iron coagulant solutions.

Keefer, G.B.; Sack, W.A.

1983-03-01T23:59:59.000Z

385

Mutant E. coli strain with increased succinic acid production  

DOE Patents (OSTI)

A method for isolating succinic acid producing bacteria is provided comprising increasing the biomass of an organism which lacks the ability to catabolize pyruvate, and then subjecting the biomass to glucose-rich medium in an anaerobic environment to enable pyruvate-catabolizing mutants to grow. The invention also provides for a mutant that produces high amounts of succinic acid, which as been derived from a parent which lacked the genes for pyruvate formate lyase and lactate dehydrogenase, and which belongs to the E.coli Group of Bacteria.

Donnelly, Mark (Warrenville, IL); Millard, Cynthia S. (Plainfield, IL); Stols, Lucy (Woodridge, IL)

1998-01-01T23:59:59.000Z

386

Experimental Study of Mechanistic Acid Deconstruction of Lignin  

DOE Green Energy (OSTI)

Lignin is a major component of biomass, which remains highly underutilized in selective biomass conversion strategies to renewable fuels and chemicals. Here we are interested in studying the mechanisms related to the acid deconstruction of lignin with a combined theoretical and experimental approach. Quantum mechanical calculations were employed to elucidate possible deconstruction mechanisms with transition state theory. Model dimers, imitating H, S, and G lignins, were synthesized with the most abundant {beta} - O - 4 linkage in lignin. These compounds were then depolymerized using various acids and at different operating conditions. The deconstruction products were analyzed to complement the QM studies and investigate proposed mechanisms.

Sturgeon, M.; Kim, S.; Chmely, S. C.; Katahira, R.; Foust, T. D.; Beckham, G. T.

2012-01-01T23:59:59.000Z

387

Mutant E. coli strain with increased succinic acid production  

DOE Patents (OSTI)

A method for isolating succinic acid producing bacteria is provided comprising increasing the biomass of an organism which lacks the ability to catabolize pyruvate, and then subjecting the biomass to glucose-rich medium in an anaerobic environment to enable pyruvate-catabolizing mutants to grow. The invention also provides for a mutant that produces high amounts of succinic acid, which has been derived from a parent which lacked the genes for pyruvate formate lyase and lactate dehydrogenase, and which belongs to the E.coli Group of Bacteria.

Donnelly, Mark (Warrenville, IL); Millard, Cynthia S. (Plainfield, IL); Stols, Lucy (Woodridge, IL)

2002-01-01T23:59:59.000Z

388

Processing nitric-phosphoric acid solutions to nitroammophoska  

Science Conference Proceedings (OSTI)

The technology for comprehensive processing of apatite with recovery of all valuable components in the starting material is based on its nitric acid decomposition with crystallization of calcium nitrate tetrahydrate. The results of operation on a pilot installation for complex processing of apatite with production of strontium carbonate, calcium fluoride, a rare earth phosphate concentrate, calcium carbonate and a nitric-phosphoric acid solution (NPAS) are given below. The article presents the data of the operation of the experimental unit for production of complex fertilizers of the nitroammophoska type from the NPAS.

Gol'dinov, A.L.; Abramov, O.B.; Afanasenko, B.P.; Baibakov, P.Y.; Kiselevich, P.V.

1982-12-01T23:59:59.000Z

389

Stress corrosion cracking of zirconium in nitric acid  

Science Conference Proceedings (OSTI)

The susceptibility of zirconium and its common alloys to stress corrosion cracking (SCC) in nitric acid was investigated by slow strain-rate and constant deflection techniques. Cracking occurred at 25/sup 0/C over a wide range of acid concentrations and electrochemical potentials. The crack velocity increased slightly with increasing temperature. The failure mode was transgranular and the morphology was similar to SCC failures of zirconium alloys in other environments. The fracture was very orientation-dependent suggesting that it occurs on a single crystallographic plane in the material. The results of the study are not consistent with a hydrogen mechanism for cracking.

Beavers, J.A.; Griess, J.C.; Boyd, W.K.

1980-01-01T23:59:59.000Z

390

Approaches for regeneration of amine-carboxylic acid extracts  

Science Conference Proceedings (OSTI)

Extraction processes based on reversible chemical complexation can be useful for separation of polar organics from dilute solution. Tertiary amines are effective extractants for the recovery of carboxylic acids from aqueous solution. The regeneration of aminecarboxylic acid extracts is an important step which strongly influences the economic viability of the separation process. Several regeneration methods are critically reviewed, and the factors that affect swing regeneration processes, including temperature-swing, diluent composition-swing and pH-swing with a volatile base are discussed. Interest in this area comes from interest in treatment of waste streams, particularly in petrochemical and fermentation manufacture.

Dai, Y.; King, C.J.

1995-07-01T23:59:59.000Z

391

Production of Butyric Acid and Butanol from Biomass  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Production of Butyric Acid and Butanol from Biomass Production of Butyric Acid and Butanol from Biomass Final Report Work Performed Under: Contract No.: DE-F-G02-00ER86106 For: U.S. Department of Energy Morgantown, WV By David Ramey Environmental Energy Inc. 1253 N. Waggoner Road P.O. Box 15 Blacklick, Ohio 43004 And Shang-Tian Yang Department of Chemical and Biomolecular Engineering The Ohio State University 140 West 19 th Avenue Columbus, Ohio 43210 - 2004 - Table of Contents Page Proposal Face Page ..........................................................................................................................1 Table of Contents.............................................................................................................................2 Executive Summary

392

D-erythroascorbic acid: Its preparations, chemistry, and metabolism (fungi and plants)  

SciTech Connect

The origin of oxalate in plants has received considerable attention and glycolate metabolism has been generally regarded as a prime precursor candidate although studies on the metabolism of L-ascorbic acid single out that plant constituent as well. Experiments with oxalate-accumulating plants that contain little or no tartaric acid revealed the presence of a comparable L-ascorbic acid metabolism with the exception that the cleavage products were oxalic acid and L-threonic acid or products of L-threonic acid metabolism. A reasonable mechanism for cleavage of L-ascorbic acid at the endiolic bond is found in studies on the photooxygenation of L-ascorbic acid. Presumably, analogs of L-ascorbic acid that differ only in the substituent at C4 also form a hydroperoxide in the presence of alkaline hydrogen peroxide and subsequently yield oxalic acid and the corresponding aldonic acid or its lactone. We became interested in such a possibility when we discovered that L-ascorbic acid was rare or absent in certain yeasts and fungi whereas a L-ascorbic acid analog, D-glycero-pent-2-enono- 1,4-lactone (D-erythroascorbic acid), was present. It has long been known that oxalate occurs in yeasts and fungi and its production plays a role in plant pathogenesis. As to the biosynthetic origin of fungal oxalic acid there is little information although it is generally assumed that oxaloacetate or possibly, glycolate, might be that precursor.

Loewus, F.A. (Washington State Univ., Pullman, WA (United States). Inst. of Biological Chemistry); Seib, P.A. (Kansas State Univ., Manhattan, KS (United States). Dept. of Grain Science and Industry)

1991-01-01T23:59:59.000Z

393

D-erythroascorbic acid: Its preparations, chemistry, and metabolism (fungi and plants). Final report  

SciTech Connect

The origin of oxalate in plants has received considerable attention and glycolate metabolism has been generally regarded as a prime precursor candidate although studies on the metabolism of L-ascorbic acid single out that plant constituent as well. Experiments with oxalate-accumulating plants that contain little or no tartaric acid revealed the presence of a comparable L-ascorbic acid metabolism with the exception that the cleavage products were oxalic acid and L-threonic acid or products of L-threonic acid metabolism. A reasonable mechanism for cleavage of L-ascorbic acid at the endiolic bond is found in studies on the photooxygenation of L-ascorbic acid. Presumably, analogs of L-ascorbic acid that differ only in the substituent at C4 also form a hydroperoxide in the presence of alkaline hydrogen peroxide and subsequently yield oxalic acid and the corresponding aldonic acid or its lactone. We became interested in such a possibility when we discovered that L-ascorbic acid was rare or absent in certain yeasts and fungi whereas a L-ascorbic acid analog, D-glycero-pent-2-enono- 1,4-lactone (D-erythroascorbic acid), was present. It has long been known that oxalate occurs in yeasts and fungi and its production plays a role in plant pathogenesis. As to the biosynthetic origin of fungal oxalic acid there is little information although it is generally assumed that oxaloacetate or possibly, glycolate, might be that precursor.

Loewus, F.A. [Washington State Univ., Pullman, WA (United States). Inst. of Biological Chemistry; Seib, P.A. [Kansas State Univ., Manhattan, KS (United States). Dept. of Grain Science and Industry

1991-12-31T23:59:59.000Z

394

Method for the manufacture of lead-acid batteries and an associated apparatus and associated lead-acid battery  

SciTech Connect

A method for the manufacture of lead-acid batteries and associated apparatus and a lead-acid battery design resulting therefrom is disclosed. The method involves providing a battery grid and pasting the grid with a battery paste such that a profiled and tapered battery plate is formed. This battery plate is wrapped onto a coil and cured in curing apparatus. A battery element is formed using coils of the finished plate stock, separator material, and winged end plate. After this, several battery elements are then placed into a battery container. 31 figs.

Wheadon, E.G.; Forrer, L.L.

1994-01-11T23:59:59.000Z

395

Mechanistic Investigation of Tolfenamic Acid, Betulinic Acid, and Aspirin in Anti-Cancer Therapy  

E-Print Network (OSTI)

Tolfenamic acid (TA), betulinic acid (BA) and acetylsalicylic acid (aspirin) are anticancer drugs, and Sp1, Sp3, Sp4 transcription factors and growth factor 2 (EGFR2, HER2 / ErbB2) are important molecular markers in cancer cells. In this study the molecular mechanisms by which these anticancer drugs target downregulation of Sp1, Sp3, Sp4 and ErbB2 are investigated in breast cancer cells. TA inhibits growth of ErbB2-overexpressing BT474 and SKBR3 breast cancer cells by inhibiting ErbB2 expression. In cells treated with TA, ErbB2 mRNA expression and promoter activity were decreased, and this was due to decreased mRNA stability in BT474 cells. In both cell lines, TA also decreased expression of the YY1 and AP-2 transcription factors that are required for basal ErbB2 expression. These effects were accompanied by decreased ErbB2-dependent kinase activities, induction of p27, and decreased expression of cyclin D1. In addition, TA also inhibited tumor growth in BT474 cells orthotopic mouse model. However, Sp proteins were not the major target of TA in these breast cancer cells and this contrasts to results in pancreatic cancer cells where TA decreased expression of Sp proteins. BA inhibits growth of ErbB2 overexpressing BT474 and MDA-MB-453 and induced apoptosis in these cells. BA induced proteasome-independent downregulation of specificity protein (Sp) transcription factors Sp1, Sp3, Sp4 and survivin, an Sp-regulated gene, and BA also decreased expression of ErbB2, ErbB2-regulated kinases and also YY1, a transcription factor that regulates ErbB2 expression in these cells. Knockdown of Sp1, Sp3, Sp4 and their combination by RNA interference was accompanied by decreased expression of ErbB2, YY1 and luciferase activity in cells transfected with a construct containing the GC-rich YY1 promoter linked to a luciferase reporter gene. BA-dependent repression of Sp1, Sp3, Sp4 and Sp regulated genes was due in part to induction of the Sp repressor ZBTB10 and downregulation of microRNA-27a (miR-27a) which constitutively inhibits ZBTB10 expression. The effects of BA on the miR-27a:zBTB10-Sp transcription factor axis were inhibited in cells cotreated with the cannabinoid 1 (CB1) and CB2 receptor antagonists AM251 and AM630 respectively. However, in vitro binding studies with ? 10 mM BA and a radiolabeled cannabinoid did not indicate direct competitive binding of BA to the CB1 and CB2 receptors, suggesting a possible role for other CB-like G protein-coupled receptors. Aspirin inhibits growth, induces apoptosis and decreases cell migration in BT474 and MDA-MB-453 breast cancer cells that overexpress the ErbB2 oncogene. Aspirin also downregulated ErbB2 expression in these cells and this was accompanied by inhibition of downstream kinases including phospho-Akt (p-Akt) and phospho-mitogen-activated protein kinase (p-MAPK). Aspirin also decreased expression of survivin, vascular endothelial growth factor (VEGF) and YY1 which regulates ErbB2 expression in these cell lines. Aspirin also downregulates Sp1, Sp3 and Sp4, and further investigation of the underlying mechanism of action showed that aspirin-induced downregulation of Sp transcription factors and Sp-regulated genes could be inhibited in part by proteasome inhibitior lactacystin and phosphatase inhibitors including sodium orthovanadate (SOV). These results were consistant with the induction of several phosphatases by aspirin in BT474 and MDA-MB-453 cells and these include mitogen-activated protein kinase phosphatase-5 (MKP-5) and MKP-1. Aspirin-induced downregulation of Sp1, Sp3 and Sp4 are reversed in cells transfected with an oligonucleotide (siMKP5) that knocks down MKP5 by RNA interference whereas siMKP-1 did not block Sp protein downregulation demonstrating for the first time a linkage between a drug-induced phosphatase (MKP-5) and Sp downregulation. These results suggest that TA, BA and aspirin represent novel and promising new anticancer drugs for cancer treatment by targeting Sp proteins and ErbB2 oncogene.

Liu, Xinyi

2011-08-01T23:59:59.000Z

396

Human platelet aggregation and phospholipid fatty acid composition during omega-3 fatty acid enriched egg consumption: influence of nutrient intake and omega-3 fatty acid source  

E-Print Network (OSTI)

The current study investigated the usefulness of omega-3 polyunsaturated fatty acid (n-3 PUFA) enriched eggs for duplicating health benefits of consuming fish, specifically decreasing platelet aggregation via changes in plasma phospholipid (PL) composition. A further aspect of this investigation was to determine if other nutrients may significantly hinder or promote the incorporation of omega-6 and omega-3 PUFA, specifically essential fatty acids (EFA), and their derivatives, into plasma PL. Healthy, normolipidemic individuals (n=30) consumed four typical, linolenic acid-rich (LNA; 18:3n-3), or docosahexaenoic acid-rich (DHA; 22:6n-3) eggs weekly for alternating six-week periods, separated by four-week washouts, in a completely randomized design. According to analysis of variance using the GLM procedure of SAS, either n-3 PUFA-rich egg promoted the accumulation of n-3 PUFA in the phosphatidylethanolamine (PE) fraction of plasma rather than the phosphatidylcholine (PC) fraction. Likewise, both eggs resulted in significant reductions in linoleic acid (LINO; 18:2n-6) esterification in plasma PE. The influence of eggs on plasma PL n-3 PUFA was physiologically significant as platelet aggregation was decreased in response to consuming either DHA-rich or LNA-rich eggs but not in response to typical egg consumption, as determined by non-parametric analysis using Chi Square. Stepwisemultiple regression of dietary nutrients and plasma PL PUFA composition indicated that dietary intake accounted for 42% of the variability in plasma PL EFA. Dietary carbohydrate (CHO), as a percentage of total energy, was significantly different between subjects for which the within 20% versus >20% difference from measured. The plasma EFA profile of individuals consuming dietary CHO in amounts recommended by the current RDA was significantly less predictable by the model than for those consuming lesser amounts of CHO. These data suggest that individuals consuming increased CHO may consume less EFA, consume EFA infrequently, or conversely, those individuals with low CHO intake have higher EFA intake. The results of the current study suggest that eggs designed to be rich in n-3 PUFA can supply health benefits typically associated with fish consumption. Our findings also suggest that excess dietary CHO may interfere with the accumulation of EFA in plasma PL.

Hatch, Sandra D

1997-01-01T23:59:59.000Z

397

Phosphorylated Mesoporous Carbon as a Solid Acid Catalyst  

Science Conference Proceedings (OSTI)

Mesoporous carbon catalyst supports are attractive due to their wide chemical stability while potentially increasing masstransport through and providing a path for larger molecules to access catalytic sites. Herein we report the synthesis of a 10 phosphorylated mesoporous carbon solid-acid catalyst characterized by NH3-TPD and isopropanol dehydration.

Dai, Sheng [ORNL; Mayes, Richard T [ORNL; Fulvio, Pasquale F [ORNL; Ma, Zhen [ORNL

2011-01-01T23:59:59.000Z

398

Advanced Lead Acid Battery Consortium | Open Energy Information  

Open Energy Info (EERE)

Lead Acid Battery Consortium Lead Acid Battery Consortium Jump to: navigation, search Name Advanced Lead-Acid Battery Consortium Place Durham, North Carolina Zip 27713 Sector Vehicles Product The ALABC is a research consortium of more than 50 battery-related companies that was originally formed in 1992 to advance the capabilities of the valve-regulated lead acid battery to help electric vehicles become a reality. Coordinates 45.396265°, -122.755099° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.396265,"lon":-122.755099,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

399

Technetium radiodiagnostic fatty acids derived from bisamide bisthiol ligands  

DOE Patents (OSTI)

A bisamide-bisthiol ligand containing fatty acid substituted thiol useful for producing Tc-labelled radiodiagnostic imaging agents is described. The ligand forms a complex with the radionuclide .sup.99m Tc suitable for administration as a radiopharmaceutical to obtain images of the heart for diagnosis of myocardial disfunction.

Jones, Alun G. (Newton Centre, MA); Lister-James, John (Wellesley, MA); Davison, Alan (Needham, MA)

1988-05-24T23:59:59.000Z

400

Radiolabeled dimethyl branched long chain fatty acid for heart imaging  

DOE Patents (OSTI)

A radiolabeled long chain fatty acid for heart imaging that has dimethyl branching at one of the carbons of the chain which inhibits the extent to which oxidation can occur. The closer to the carboxyl the branching is positioned, the more limited the oxidation, thereby resulting in prolonged retention of the radiolabeled compound in the heart.

Knapp, Jr., Furn F. (Oak Ridge, TN); Goodman, Mark M. (Knoxville, TN); Kirsch, Gilbert (Woippy, FR)

1988-08-16T23:59:59.000Z

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


401

Palm fatty acid distillate biodiesel: Next-generation palm biodiesel  

Science Conference Proceedings (OSTI)

The promise of alternative low-cost non-food feedstocks such as jatropha has yet to materialize, and there seems to be, at the current moment, no light at the end of the tunnel in the search for low-cost feedstock alternatives. Palm fatty acid distillate b

402

Advances in Conjugated Linoleic Acid Research, Volumes 1-3  

Science Conference Proceedings (OSTI)

This is your only chance to get all 3 Volumes, as Volume 1 is no longer available in print! Advances in Conjugated Linoleic Acid Research, Volumes 1-3 Health Nutrition Biochemistry DVD & CD-ROMs Health - Nutrition - Biochemistry AOCS Press This

403

Conversion of carboxylate salts to carboxylic acids via reactive distillation  

E-Print Network (OSTI)

The purpose of this study is to convert carboxylate salts (e.g. calcium acetate, propionate, and butyrate) into carboxylic acids (e.g., acetic, propionic, and butyric acids). The carboxylate salts can be produced from wastes, such as paper fines, municipal solid wastes, sewage sludge, and industrial biosludge. Using a proprietary technology owned by Texas A&M University the wastes are first treated with lime to enhance reactivity. Then they are converted to calcium carboxylate salts using a mixed culture of microorganisms derived from cattle rumen or anaerobic waste treatment facilities. The paper fines and municipal solid waste provide energy, whereas the industrial biosludge and sewage sludge provide nutrients for the microorganisms. The calcium carboxylate salts are concentrated and reacted with a low-molecular-weight tertiary amine and carbon dioxide to precipitate calcium carbonate. In a distillation column, the low-molecular-weight amine carboxylate reacts with a high-molecular-weight tertiary amine allowing the low-molecular-weight amine to be recovered from the top of the column. The resulting high-molecular-weight amine carboxylate is converted to amine and carboxylic acid in a reactive distillation column. This project focuses on the conversion of the carboxylate salts produced via fermentation into their corresponding acids via reactive distillation. The primary objective is to determine the optimal operating conditions of the distillation. A secondary objective is to optimize the precipitation step in the recovery process.

Williamson, Shelly Ann

2000-01-01T23:59:59.000Z

404

A Mathematical Model for the Analysis of Acid Deposition  

Science Conference Proceedings (OSTI)

This paper describes the use of a regional-scale air quality model as a diagnostic tool for analyzing problems associated with acid rain. The model, which is hybrid in nature, consists of a puff module and a grid module. The puff module computes ...

Mei-Kao Liu; Douglas A. Stewart; Donald Henderson

1982-06-01T23:59:59.000Z

405

Vapor-Liquid Partitioning of Sulfuric Acid and Ammonium Sulfate  

Science Conference Proceedings (OSTI)

The quality of water and steam is central to ensuring power plant component availability and reliability. A key part of developing operating cycle chemistry guidelines is an understanding of the impurity distribution between water and steam. This study focused on the partitioning of sulfuric acid and ammonium bisulfate between the liquid and vapor phases.

1999-03-31T23:59:59.000Z

406

Omega-3 fatty acid profiling and dietary forensics  

Science Conference Proceedings (OSTI)

The following article is based on the address given by Ken D. Stark, the 2009 AOCS Young Scientist Research Award winner, at the 100th AOCS Annual Meeting & Expo, held in Orlando, Florida, USA, May 3-6. Omega-3 fatty acid profiling and dietary forensics

407

Ethanol production with dilute acid hydrolysis using partially dried lignocellulosics  

DOE Patents (OSTI)

A process of converting lignocellulosic biomass to ethanol, comprising hydrolyzing lignocellulosic materials by subjecting dried lignocellulosic material in a reactor to a catalyst comprised of a dilute solution of a strong acid and a metal salt to lower the activation energy (i.e., the temperature) of cellulose hydrolysis and ultimately obtain higher sugar yields.

Nguyen, Quang A. (Chesterfield, MO); Keller, Fred A. (Lakewood, CO); Tucker, Melvin P. (Lakewood, CO)

2003-12-09T23:59:59.000Z

408

Integrated boiler, superheater, and decomposer for sulfuric acid decomposition  

DOE Patents (OSTI)

A method and apparatus, constructed of ceramics and other corrosion resistant materials, for decomposing sulfuric acid into sulfur dioxide, oxygen and water using an integrated boiler, superheater, and decomposer unit comprising a bayonet-type, dual-tube, counter-flow heat exchanger with a catalytic insert and a central baffle to increase recuperation efficiency.

Moore, Robert (Edgewood, NM); Pickard, Paul S. (Albuquerque, NM); Parma, Jr., Edward J. (Albuquerque, NM); Vernon, Milton E. (Albuquerque, NM); Gelbard, Fred (Albuquerque, NM); Lenard, Roger X. (Edgewood, NM)

2010-01-12T23:59:59.000Z

409

Improved method for extracting lanthanides and actinides from acid solutions  

DOE Patents (OSTI)

A process for the recovery of actinide and lanthanide values from aqueous acidic solutions uses a new series of neutral bi-functional extractants, the alkyl(phenyl)-N,N-dialkylcarbamoylmethylphosphine oxides. The process is suitable for the separation of actinide and lanthanide values from fission product values found together in high-level nuclear reprocessing waste solutions.

Horwitz, E.P.; Kalina, D.G.; Kaplan, L.; Mason, G.W.

1983-07-26T23:59:59.000Z

410

Process for immobilizing radioactive boric acid liquid wastes  

DOE Patents (OSTI)

Disclosed is a method of immobilizing boric acid liquid wastes containing radionuclides by neutralizing the solution and evaporating the resulting precipitate to near dryness. The dry residue is then fused into a reduced volume, insoluble, inert, solid form containing substantially all the radionuclides.

Greenhalgh, W.O.

1984-05-10T23:59:59.000Z

411

Omega-3 fatty acids: $13 billion global market  

Science Conference Proceedings (OSTI)

Awareness of omega-3 fatty acids as being among the most important nutrients for physical and mental health has reached critical mass, according to a new report on Omega-3: Global Product Trends and Opportunities from Packaged Facts, a division of Market

412

Can Delignification Decrease Cellulose Digestibility in Acid Pretreated Corn Stover?  

Science Conference Proceedings (OSTI)

It has previously been shown that the improved digestibility of dilute acid pretreated corn stover is at least partially due to the removal of xylan and the consequent increase in accessibility of the cellulose to cellobiohydrolase enzymes. We now report on the impact that lignin removal has on the accessibility and digestibility of dilute acid pretreated corn stover. Samples of corn stover were subjected to dilute sulfuric acid pretreatment with and without simultaneous (partial) lignin removal. In addition, some samples were completely delignified after the pretreatment step using acidified sodium chlorite. The accessibility and digestibility of the samples were tested using a fluorescence-labeled cellobiohydrolase (Trichoderma reesei Cel7A) purified from a commercial cellulase preparation. Partial delignification of corn stover during dilute acid pretreatment was shown to improve cellulose digestibility by T. reesei Cel7A; however, decreasing the lignin content below 5% (g g{sup -1}) by treatment with acidified sodium chlorite resulted in a dramatic reduction in cellulose digestibility. Importantly, this effect was found to be enhanced in samples with lower xylan contents suggesting that the near complete removal of xylan and lignin may cause aggregation of the cellulose microfibrils resulting in decreased cellulase accessibility.

Ishizawa, C. I.; Jeoh, T.; Adney, W. S.; Himmel, M. E.; Johnson, D. K.; Davis, M. F.

2009-01-01T23:59:59.000Z

413

Surface interactions of cesium and boric acid with stainless steel  

SciTech Connect

In this report, the effects of cesium hydroxide and boric acid on oxidized stainless steel surfaces at high temperatures and near one atmosphere of pressure are investigated. This is the first experimental investigation of this chemical system. The experimental investigations were performed using a mass spectrometer and a mass electrobalance. Surfaces from the different experiments were examined using a scanning electron microscope to identify the presence of deposited species, and electron spectroscopy for chemical analysis to identify the species deposited on the surface. A better understanding of the equilibrium thermodynamics, the kinetics of the steam-accelerated volatilizations, and the release kinetics are gained by these experiments. The release rate is characterized by bulk vaporization/gas-phase mass transfer data. The analysis couples vaporization, deposition, and desorption of the compounds formed by cesium hydroxide and boric acid under conditions similar to what is expected during certain nuclear reactor accidents. This study shows that cesium deposits on an oxidized stainless steel surface at temperatures between 1000 and 1200 Kelvin. Cesium also deposits on stainless steel surfaces coated with boric oxide in the same temperature ranges. The mechanism for cesium deposition onto the oxide layer was found to involve the chemical reaction between cesium and chromate. Some revaporization in the cesium hydroxide-boric acid system was observed. It has been found that under the conditions given, boric acid will react with cesium hydroxide to form cesium metaborate. A model is proposed for this chemical reaction.

Grossman-Canfield, N.

1995-08-01T23:59:59.000Z

414

Advanced water-cooled phosphoric acid fuel cell development  

DOE Green Energy (OSTI)

Fabrication of repeat parts for the small area short stack is nearing completion and assembly activities are being initiated. Electrolyte reservoir plates (ERPs) were completed and processed into integral separator plates, and acid fill of parts was initiated. Fabrication of electrodes was also completed, including catalyzation and applications of seals and matrices.

Not Available

1990-01-01T23:59:59.000Z

415

Mosaic protein and nucleic acid vaccines against hepatitis C virus  

DOE Patents (OSTI)

The invention relates to immunogenic compositions useful as HCV vaccines. Provided are HCV mosaic polypeptide and nucleic acid compositions which provide higher levels of T-cell epitope coverage while minimizing the occurrence of unnatural and rare epitopes compared to natural HCV polypeptides and consensus HCV sequences.

Yusim, Karina; Korber, Bette T. M.; Kuiken, Carla L.; Fischer, William M.

2013-06-11T23:59:59.000Z

416

Method for preparing 6-.beta.-halopenicillanic acids  

SciTech Connect

The present invention relates to a new and improved method for the preparation of a compound of the formula I ##STR1## in which R stands for halogen, giving rise to high yields of substantially pure 6.beta.-halopenicillanic acids, obtained in one step.

Hansen, Erik I. (Fredensborg, DK); Kran-Nielsen, Mogens P. (Skovlunde, DK); Von Daehne, Welf (Rungsted Kyst, DK)

1989-01-01T23:59:59.000Z

417

Method for extracting lanthanides and actinides from acid solutions  

SciTech Connect

A process for the recovery of actinide and lanthanide values from aqueous acidic solutions with an organic extractant is patented. The process is suitable for the separation of actinide and lanthanide values from fission product values found together in high-level nuclear reprocessing waste solutions.

Horwitz, E.P.; Kalina, D.G.; Kaplan, L.; Mason, G.W.

1985-10-22T23:59:59.000Z

418

Cell cycle nucleic acids, polypeptides and uses thereof  

DOE Patents (OSTI)

The invention provides isolated nucleic acids and their encoded proteins that are involved in cell cycle regulation. The invention further provides recombinant expression cassettes, host cells, transgenic plants, and antibody compositions. The present invention provides methods and compositions relating to altering cell cycle protein content, cell cycle progression, cell number and/or composition of plants.

Gordon-Kamm, William J. (Urbandale, IA); Lowe, Keith S. (Johnston, IA); Larkins, Brian A. (Tucson, AZ); Dilkes, Brian R. (Tucson, AZ); Sun, Yuejin (Westfield, IN)

2007-08-14T23:59:59.000Z

419

Process for immobilizing radioactive boric acid liquid wastes  

DOE Patents (OSTI)

A method of immobilizing boric acid liquid wastes containing radionuclides by neutralizing the solution and evaporating the resulting precipitate to near dryness. The dry residue is then fused into a reduced volume, insoluble, inert, solid form containing substantially all the radionuclides.

Greenhalgh, Wilbur O. (Richland, WA)

1986-01-01T23:59:59.000Z

420

Polypeptides having cellulolytic enhancing activity and nucleic acids encoding same  

DOE Patents (OSTI)

The present invention relates to isolated polypeptides having cellulolytic enhancing activity and isolated polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods for producing and using the polypeptides.

Brown, Kimberly; Harris, Paul; Zaretsky, Elizabeth; Re, Edward; Vlasenko, Elena; McFarland, Keith; Lopez de Leon, Alfredo

2012-10-16T23:59:59.000Z

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


421

Acid-catalyzed dehydrogenation of amine-boranes  

DOE Patents (OSTI)

A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. The method generates hydrogen and produces a solid polymeric [R.sup.1R.sup.2B--NR.sup.3R.sup.4].sub.n product. The method of dehydrogenating amine-boranes may be used to generate H.sub.2 for portable power sources.

Stephens, Frances Helen (Santa Fe, NM); Baker, Ralph Thomas (Los Alamos, NM)

2010-01-12T23:59:59.000Z

422

Abuse tests on sealed lead-acid batteries  

DOE Green Energy (OSTI)

Abuse tests were conducted on the lead-acid batteries used to power electrical testers used at the Department of Energy's Pantex Plant. Batteries were subjected to short circuits, crushes, penetrations, and drops. None of the observed responses would be a threat to nuclear explosive safety in a bay or cell at Pantex. Temperatures, currents, and damage were measured and recorded during the tests.

LOESCHER,DOUGLAS H.; CRAFTS,CHRIS C.; UNKELHAEUSER,TERRY M.

2000-03-01T23:59:59.000Z

423

Water-enhanced solubility of carboxylic acids in organic solvents and its applications to extraction processes  

Science Conference Proceedings (OSTI)

The solubilities of carboxylic acids in certain organic solvents increase remarkably with an increasing amount of water in the organic phase. This phenomenon leads to a novel extract regeneration process in which the co-extracted water is selectively removed from an extract, and the carboxylic acid precipitates. This approach is potentially advantageous compared to other regeneration processes because it removes a minor component of the extract in order to achieve a large recovery of acid from the extract. Carboxylic acids of interest include adipic acid, fumaric acid, and succinic acid because of their low to moderate solubilities in organic solvents. Solvents were screened for an increase in acid solubility with increased water concentration in the organic phase. Most Lewis-base solvents were found to exhibit this increased solubility phenomena. Solvents that have a carbonyl functional group showed a very large increase in acid solubility. 71 refs., 52 figs., 38 tabs.

Starr, J.N.; King, C.J.

1991-11-01T23:59:59.000Z

424

Managing Chemistry Underground: Is Co-Sequestration an Option in Selected Formations?  

SciTech Connect

Geochemical simulations indicate that, although co-injection of CO2 and SO2 in glauconitic sandstone may not result in the permanent sequestration of SO2, other formations are more favorable. In a predominantly dolomite formation, dissolution of calcite, and to a lesser extent, dolomite will provide Ca in solution to promote the precipitation of anhydrite, thus removing the SO2 from solution. In basalt, dissolution of basaltic glass under acidic conditions provides Ca and Fe in solution which promote the sequestration of SO2 as anhydrite and eventually, pyrite.

Bacon, Diana H.; Murphy, Ellyn M.

2011-04-19T23:59:59.000Z

425

Acidic Extracellular pH Promotes Activation of Integrin [alpha]v[beta]3  

E-Print Network (OSTI)

Acidic extracellular pH is characteristic of the cell microenvironment in several important physiological and pathological contexts. Although it is well established that acidic extracellular pH can have profound effects ...

Paradise, Ranjani K.

426

Chemomechanical regulation of integrin activation and cellular processes in acidic extracellular pH  

E-Print Network (OSTI)

It is well established that extracellular pH (pHe) becomes acidic in several important physiological and pathological contexts, including the tumor and wound microenvironments. Although it is known that acidic pHe can have ...

Paradise, Ranjani Krishnan

2012-01-01T23:59:59.000Z

427

Polyol-free synthesis of uniformly dispersed Pt/graphene oxide electrocatalyst by sulfuric acid treatment  

Science Conference Proceedings (OSTI)

Polyol-free synthesis of highly loaded Pt catalysts on sulfuric-acid-treated graphene oxide (SGO) was reported. Sulfuric acid treatment increased the surface hydroxyl groups on graphene oxide (GO), which contributed to the reduction of Pt precursors ...

Tae Kyu Lee, Hyang Jin Park, Min Ki Kwon, Ju Hae Jung, Junbom Kim, Seung Hyun Hur

2012-01-01T23:59:59.000Z

428

A Relationship Between Acid Precipitation and Three-Dimensional Transport Associated with Synoptic-Scale Cyclones  

Science Conference Proceedings (OSTI)

Field data collected during APEX (Acid Precipitation Experiment) are used in combination with an isentropic trajectory model to analyze the relationship between acid precipitation and three-dimensional transport associated with cyclonic storms. ...

Philip L. Haggenson; Allan L. Lazrus; Ying-Hwa Kuo; Ginger A. Caldwell

1985-09-01T23:59:59.000Z

429

EXTRACTION OF TETRAVALENT PLUTONIUM VALUES FROM AQUEOUS ACID SOLUTIONS BY 2($beta$-ETHYLBUTOXY) ETHANOL  

DOE Patents (OSTI)

A process of extracting tetnavalent plutonium from aqueous inonganic acid solutions (acidity between 1 N and pH of 2.5) with 2( beta -ethylbutoxy) ethanol is described. (AEC)

Seaborg, G.T.

1961-08-15T23:59:59.000Z

430

The Antioxidant Vitamins C & EChapter 5 Ascorbic Acid and Endothelial NO Synthesis  

Science Conference Proceedings (OSTI)

The Antioxidant Vitamins C & E Chapter 5 Ascorbic Acid and Endothelial NO Synthesis Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press Downloadable pdf of Chapter 5 Ascorbic Acid and

431

Preparation and characterization of waterborne polyurethaneurea composed of dimer fatty acid polyester polyol  

Science Conference Proceedings (OSTI)

A series of polyurethaneurea (PUU) aqueous dispersions, which were stable at ambient temperature for more than 1 year, were prepared with C36-dimer-fatty-acid-based polyester polyol, isophorone diisocyanate, dimethylol propionic acid, and ...

2006-01-01T23:59:59.000Z

432

Development of Acetic Acid Removal Technology for the UREX+Process  

SciTech Connect

It is imperative that acetic acid is removed from a waste stream in the UREX+process so that nitric acid can be recycled and possible interference with downstreatm steps can be avoidec. Acetic acid arises from acetohydrozamic acid (AHA), and is used to suppress plutonium in the first step of the UREX+process. Later, it is hydrolyzed into hydroxyl amine nitrate and acetic acid. Many common separation technologies were examined, and solvent extraction was determined to be the best choice under process conditions. Solvents already used in the UREX+ process were then tested to determine if they would be sufficient for the removal of acetic acid. The tributyl phosphage (TBP)-dodecane diluent, used in both UREX and NPEX, was determined to be a solvent system that gave sufficient distribution coefficients for acetic acid in addition to a high separation factor from nitric acid.

Robert M. Counce; Jack S. Watson

2009-06-30T23:59:59.000Z

433

Spatial Variation of Stratospheric Aerosol Acidity and Model Refractive Index: Implications of Recent Results  

Science Conference Proceedings (OSTI)

Recent experimental results indicate that little or no solid ammonium sulfate is present in background stratospheric aerosols. Other results allow straightforward calculation of sulfuric acid/water droplet properties (acidity, specific gravity, ...

Philip B. Russell; Patrick Hamill

1984-06-01T23:59:59.000Z

434

Transport activity dependent regulation of the yeast general amino acid permease  

E-Print Network (OSTI)

The general amino acid permease Gap1p of Saccharomyces cerevisiae scavenges amino acids from the extracellular medium for use as nitrogen sources in starvation conditions. Because unlimited uptake of both naturally occurring ...

Cain, Natalie E. (Natalie Elaine)

2011-01-01T23:59:59.000Z

435

FURNACE INJECTION OF ALKALINE SORBENTS FOR SULFURIC ACID CONTROL  

Science Conference Proceedings (OSTI)

This document summarizes progress on Cooperative Agreement DE-FC26-99FT40718, Furnace Injection of Alkaline Sorbents for Sulfuric Acid Control, during the time period April 1, 2003 through September, 2003. The objective of this project is to demonstrate the use of alkaline reagents injected into the furnace of coal-fired boilers as a means of controlling sulfuric acid emissions. The coincident removal of hydrochloric acid and hydrofluoric acid is also being determined, as is the removal of arsenic, a known poison for NO{sub x} selective catalytic reduction (SCR) catalysts. EPRI, the Tennessee Valley Authority (TVA), FirstEnergy Corporation, American Electric Power (AEP) and the Dravo Lime Company are project co-funders. URS Group is the prime contractor. This is the eighth reporting period for the subject Cooperative Agreement. During previous reporting periods, two long-term sorbent injection tests were conducted, one on Unit 3 at FirstEnergy's Bruce Mansfield Plant (BMP) and one on Unit 1 at AEP's Gavin Plant. Those tests determined the effectiveness of injecting alkaline slurries into the upper furnace of the boiler as a means of controlling sulfuric acid emissions from these units. The alkaline slurries tested included commercially available magnesium hydroxide slurry (Gavin Plant), and a byproduct magnesium hydroxide slurry (both Gavin Plant and BMP). The tests showed that injecting either the commercial or the byproduct magnesium hydroxide slurry could achieve up to 70-75% overall sulfuric acid removal. At BMP, the overall removal was limited by the need to maintain acceptable electrostatic precipitator (ESP) particulate control performance. At Gavin Plant, the overall sulfuric acid removal was limited because the furnace injected sorbent was less effective at removing SO{sub 3} formed across the SCR system installed on the unit for NO{sub x} control than at removing SO{sub 3} formed in the furnace. The SO{sub 3} removal results were presented in the semi-annual Technical Progress Report for the time period April 1, 2001 through September 30, 2001. Additional balance of plant impact information for the two tests was reported in the Technical Progress Report for the time period October 1, 2001 through March 30, 2002. Additional information became available about the effects of byproduct magnesium hydroxide injection on SCR catalyst coupons during the long-term test at BMP, and those results were reported in the report for the time period April 1, 2002 through September 30, 2002. During the current period, process economic estimates were developed, comparing the costs of the furnace magnesium hydroxide slurry injection process tested as part of this project to a number of other candidate SO{sub 3}/sulfuric acid control technologies for coal-fired power plants. The results of this economic evaluation are included in this progress report.

Gary M. Blythe

2003-10-01T23:59:59.000Z

436

GLYCOLIC-FORMIC ACID FLOWSHEET FINAL REPORT FOR DOWNSELECTION DECISION  

Science Conference Proceedings (OSTI)

Flowsheet testing was performed to develop the nitric-glycolic-formic acid flowsheet (referred to as the glycolic-formic flowsheet throughout the rest of the report) as an alternative to the nitric/formic flowsheet currently being processed at the DWPF. This new flowsheet has shown that mercury can be removed in the Sludge Receipt and Adjustment Tank (SRAT) with minimal hydrogen generation. All processing objectives were also met, including greatly reducing the Slurry Mix Evaporator (SME) product yield stress as compared to the baseline nitric/formic flowsheet. Forty-six runs were performed in total, including the baseline run and the melter feed preparation runs. Significant results are summarized. The baseline nitric/formic flowsheet run, using the SB6 simulant produced by Harrell was extremely difficult to process successfully under existing DWPF acceptance criteria with this simulant at the HM levels of noble metals. While nitrite was destroyed and mercury was removed to near the DWPF limit, the rheology of the SRAT and SME products were well above design basis and hydrogen generation far exceeded the DWPF SRAT limit. In addition, mixing during the SME cycle was very poor. In this sense, the nitric/glycolic/formic acid flowsheet represents a significant upgrade over the current flowsheet. Mercury was successfully removed with almost no hydrogen generation and the SRAT and SME products yield stresses were within process limits or previously processed ranges. The glycolic-formic flowsheet has a very wide processing window. Testing was completed from 100% to 200% of acid stoichiometry and using a glycolic-formic mixture from 40% to 100% glycolic acid. The testing met all processing requirements throughout these processing windows. This should allow processing at an acid stoichiometry of 100% and a glycolic-formic mixture of 80% glycolic acid with minimal hydrogen generation. It should also allow processing endpoints in the SRAT and SME at significantly higher total solids content and may be effective at acid stoichiometries below 100%, although no testing was performed below 100% acid stoichiometry. There are several issues related to the development of the glycolic-formic flowsheet. First, the measurement of anions using the new glycolate anion procedure likely needs to be optimized to improve the accuracy of the anions important to DWPF processing and REDOX prediction. Second, the existing REDOX equation with an added term for glycolate did not accurately predict the glass REDOX for the glycolic-formic flowsheet. Improvement of the anion measurement or modification of the REDOX methodology or equation may be necessary to improve the REDOX prediction. Last, the glycolic-formic flowsheet dissolves a number of metals, including iron. This leads to a thinner slurries but also dissolves up a portion of the iron, which is currently used for criticality control. It is recommended that DWPF continue to support development of the glycolic-formic flowsheet. This flowsheet meets or outperforms the baseline flowsheet in off-gas generation, mercury removal, product rheology and general ease of processing. Additional testing is in progress to demonstrate the effectiveness of the nitric-glycolic-formic flowsheet in processing a wide sludge processing window using the matrix sludge simulants.

Lambert, D.; Pickenheim, B.; Stone, M.; Newell, J.; Best, D.

2011-03-10T23:59:59.000Z

437

REACTIVITY OF RESORCINOL FORMALDEHYDE RESIN WITH NITRIC ACID  

Science Conference Proceedings (OSTI)

Solid-state infrared spectroscopy, differential scanning calorimetry, and elemental analysis have been used to evaluate the reactivity of resorcinol formaldehyde resin with nitric acid and characterize the solid product. Two distinct reactions were identified within the temperature range 25-55 C. The first reaction is primarily associated with resin nitration, while the second involves bulk oxidation and degradation of the polymer network leading to dissolution and off-gassing. Reaction was confirmed with nitric acid concentrations as low as 3 M at 25 C applied temperature and 0.625 M at 66 C. Although a nitrated resin product can be isolated under appropriate experimental conditions, calorimetry testing indicates no significant hazard associated with handling the dry material.

King, W; Fernando Fondeur, F; Bill Wilmarth, B; Myra Pettis, M; Shirley Mccollum, S

2006-06-14T23:59:59.000Z

438

Acid gas scrubbing by composite solvent-swollen membranes  

DOE Patents (OSTI)

A composite immobilized liquid membrane suitable for acid gas scrubbing is disclosed. The membrane is a solvent-swollen polymer and a microporous polymeric support, the solvent being selected from a class of highly polar solvents containing at least one atom selected from nitrogen, oxygen, phosphorus and sulfur, and having a boiling point of at least 100 C and a solubility parameter of from about 7.5 to about 13.5 (cal/cm[sup 3]-atm)[sup 1/2]. Such solvents are homogeneously distributed through the solvent-swollen polymer from 20% to 95% by weight. Also disclosed are methods of acid gas scrubbing of high- and low-Btu gas effluents with such solvent-swollen membranes. 3 figs.

Matson, S.L.; Lee, E.K.L.; Friesen, D.T.; Kelly, D.J.

1988-04-12T23:59:59.000Z

439

Complexation of lanthanides and actinides by acetohydroxamic acid  

Science Conference Proceedings (OSTI)

Acetohydroxamic acid (AHA) has been proposed as a suitable reagent for the complexant-based, as opposed to reductive, stripping of plutonium and neptunium ions from the tributylphosphate solvent phase in advanced PUREX or UREX processes designed for future nuclear-fuel reprocessing. Stripping is achieved by the formation of strong hydrophilic complexes with the tetravalent actinides in nitric acid solutions. To underpin such applications, knowledge of the complexation constants of AHA with all relevant actinide (5f) and lanthanide (4f) ions is therefore important. This paper reports the determination of stability constants of AHA with the heavier lanthanide ions (Dy-Yb) and also U(IV) and Th(IV) ions. Comparisons with our previously published AHA stability-constant data for 4f and 5f ions are made. (authors)

Taylor, R.J. [British Technology Centre, Nexia Solutions, Sellafield, Seascale, CA20 1PG (United Kingdom); Sinkov, S.I. [Pacific Northwest National Laboratory, Richland, WA 99352 (United States); Choppin, G.R. [Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL (United States)

2008-07-01T23:59:59.000Z

440

Acid gas scrubbing by composite solvent-swollen membranes  

DOE Patents (OSTI)

A composite immobilized liquid membrane suitable for acid gas scrubbing is disclosed. The membrane is a solvent-swollen polymer and a microporous polymeric support, the solvent being selected from a class of highly polar solvents containing at least one atom selected from nitrogen, oxygen, phosphorous and sulfur, and having a boiling point of at least 100.degree. C. and a solubility parameter of from about 7.5 to about 13.5 (cal/cm.sup.3 -atm).sup.1/2. Such solvents are homogeneously distributed through the solvent-swollen polymer from 20% to 95% by weight. Also disclosed are methods of acid gas scrubbing of high- and low-Btu gas effluents with such solvent-swollen membranes.

Matson, Stephen L. (Harvard, MA); Lee, Eric K. L. (Acton, MA); Friesen, Dwayne T. (Bend, OR); Kelly, Donald J. (Bend, OR)

1988-01-01T23:59:59.000Z

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


441

Preparation and evaluation of electrocatelysts for phosphoric acid fuel cells  

DOE Green Energy (OSTI)

Highly dispersed platinum has been placed on carbon supports so that they may be used as phosphoric acid fuel cell electrocatalysts. These catalysts were characterized for both the platinum surface areas and crystallite sizes. For a given carbon impregnation technique with the noble metal salt, a definite correlation between the specific surface area of the derived platinum crystallites to the BET surface area of the carbon support was found.

Jalan, V M

1978-01-01T23:59:59.000Z

442

Lead-acid battery cells and manufacturing process thereof  

Science Conference Proceedings (OSTI)

A lead-acid battery cell wherein each cell includes a compressed assembly of negative plates separators and positive plates. The positive plates are sandwiched between two microporous separator elements having dimensions greater than that of the plates and the plate edges are coated with an epoxy resin ribbon, which is provided by pouring resin into the channel between the projecting portions of the separators.

Robert, J.; Alzieu, J.

1984-10-09T23:59:59.000Z

443

Method for liquid chromatographic extraction of strontium from acid solutions  

DOE Patents (OSTI)

A method and apparatus for extracting strontium and technetium values from biological, industrial and environmental sample solutions using a chromatographic column is described. An extractant medium for the column is prepared by generating a solution of a diluent containing a Crown ether and dispersing the solution on a resin substrate material. The sample solution is highly acidic and is introduced directed to the chromatographic column and strontium or technetium is eluted using deionized water.

Horwitz, E. Philip (Naperville, IL); Dietz, Mark L. (Evanston, IL)

1992-01-01T23:59:59.000Z

444

Reversible Acid Gas Capture Using CO2-Binding Organic Liquids  

SciTech Connect

Acid gas scrubbing technology is predominantly aqueous alkanolamine based. Of the acid gases, CO2, H2S and SO2 have been shown to be reversible, however there are serious disadvantages with corrosion and high regeneration costs. The primary scrubbing system composed of monoethanolamine is limited to 30% by weight because of the highly corrosive solution. This gravimetric limitation limits the CO2 volumetric (?108 g/L) and gravimetric capacity (?7 wt%) of the system. Furthermore the scrubbing system has a large energy penalty from pumping and heating the excess water required to dissolve the MEA bicarbonate salt. Considering the high specific heat of water (4 j/g-1K-1), low capacities and the high corrosion we set out to design a fully organic solvent that can chemically bind all acid gases i.e. CO2 as reversible alkylcarbonate ionic liquids or analogues thereof. Having a liquid acid gas carrier improves process economics because there is no need for excess solvent to pump and to heat. We have demonstrated illustrated in Figure 1, that CO2-binding organic liquids (CO2BOLs) have a high CO2 solubility paired with a much lower specific heat (<1.5 J/g-1K-1) than aqueous systems. CO2BOLs are a subsection of a larger class of materials known as Binding Organic Liquids (BOLs). Our BOLs have been shown to reversibly bind and release COS, CS2, and SO2, which we denote COSBOLS, CS2BOLs and SO2BOLs. Our BOLs are highly tunable and can be designed for post or pre-combustion gas capture. The design and testing of the next generation zwitterionic CO2BOLs and SO2BOLs are presented.

Heldebrant, David J.; Koech, Phillip K.; Yonker, Clement R.; Rainbolt, James E.; Zheng, Feng

2010-08-31T23:59:59.000Z

445

Modeling acid-gas generation from boiling chloride brines  

Science Conference Proceedings (OSTI)

This study investigates the generation of HCl and other acid gases from boiling calcium chloride dominated waters at atmospheric pressure, primarily using numerical modeling. The main focus of this investigation relates to the long-term geologic disposal of nuclear waste at Yucca Mountain, Nevada, where pore waters around waste-emplacement tunnels are expected to undergo boiling and evaporative concentration as a result of the heat released by spent nuclear fuel. Processes that are modeled include boiling of highly concentrated solutions, gas transport, and gas condensation accompanied by the dissociation of acid gases, causing low-pH condensate. Simple calculations are first carried out to evaluate condensate pH as a function of HCl gas fugacity and condensed water fraction for a vapor equilibrated with saturated calcium chloride brine at 50-150 C and 1 bar. The distillation of a calcium-chloride-dominated brine is then simulated with a reactive transport model using a brine composition representative of partially evaporated calcium-rich pore waters at Yucca Mountain. Results show a significant increase in boiling temperature from evaporative concentration, as well as low pH in condensates, particularly for dynamic systems where partial condensation takes place, which result in enrichment of HCl in condensates. These results are in qualitative agreement with experimental data from other studies. The combination of reactive transport with multicomponent brine chemistry to study evaporation, boiling, and the potential for acid gas generation at the proposed Yucca Mountain repository is seen as an improvement relative to previously applied simpler batch evaporation models. This approach allows the evaluation of thermal, hydrological, and chemical (THC) processes in a coupled manner, and modeling of settings much more relevant to actual field conditions than the distillation experiment considered. The actual and modeled distillation experiments do not represent expected conditions in an emplacement drift, but nevertheless illustrate the potential for acid-gas generation at moderate temperatures (<150 C).

Zhang, Guoxiang; Spycher, Nicolas; Sonnenthal, Eric; Steefel, Carl

2009-11-16T23:59:59.000Z

446

C-Myc Induced Compensated Cardiac Hypertrophy Increases Free Fatty Acid Utilization for the Citric Acid Cycle  

SciTech Connect

The protooncogene C-Myc (Myc) regulates cardiac hypertrophy. Myc promotes compensated cardiac function, suggesting that the operative mechanisms differ from those leading to heart failure. Myc regulation of substrate metabolism is a reasonable target, as Myc alters metabolism in other tissues. We hypothesize that Myc-induced shifts in substrate utilization signal and promote compensated hypertrophy. We used cardiac specific Myc-inducible C57/BL6 male mice between 4-6 months old that develop hypertrophy with tamoxifen (tam). Isolated working hearts and 13Carbon (13C )-NMR were used to measure function and fractional contributions (Fc) to the citric acid cycle by using perfusate containing 13C-labeled free fatty acids, acetoacetate, lactate, unlabeled glucose and insulin. Studies were performed at pre-hypertrophy (3-days tam, 3dMyc), established hypertrophy (7-days tam, 7dMyc) or vehicle control (cont). Non-transgenic siblings (NTG) received 7-days tam or vehicle to assess drug effect. Hypertrophy was confirmed by echocardiograms and heart weights. Western blots were performed on key metabolic enzymes. Hypertrophy occurred in 7dMyc only. Cardiac function did not differ between groups. Tam alone did not affect substrate contribution in NTG. Substrate utilization was not significantly altered in 3dMyc versus cont. The free fatty acid FC was significantly greater in 7dMyc vs cont with decreased unlabeled Fc, which is predominately exogenous glucose. Free fatty acid flux to the citric acid cycle increased while lactate flux was diminished in 7dMyc compared to cont. Total protein levels of a panel of key metabolic enzymes were unchanged; however total protein O-GlcNAcylation was increased in 7dMyc. Substrate utilization changes did not precede hypertrophy; therefore they are not the primary signal for cardiac growth in this model. Free fatty acid utilization and oxidation increase at established hypertrophy. Understanding the mechanisms whereby this change maintained compensated function could provide useful information for developing metabolic therapies to treat heart failure. The molecular signaling for this metabolic change may occur through O-GlcNAcylation.

Olson, Aaron; Ledee, Dolena; Iwamoto, Kate; Kajimoto, Masaki; O'Kelly-Priddy, Colleen M.; Isern, Nancy G.; Portman, Michael A.

2013-02-01T23:59:59.000Z

447

Validation of Quantitative Method for Glycidol Fatty Acid Esters in Edible Oils  

Science Conference Proceedings (OSTI)

Validation of Quantitative Method for Glycidol Fatty Acid Esters (GEs) in Edible Oils Hiroki Shiro, Naoki Kondo and Yoshinori Masukawa

448

Phenolic acids as bioindicators of fly ash deposit revegetation  

Science Conference Proceedings (OSTI)

The floristic composition, the abundance, and the cover of pioneer plant species of spontaneously formed plant communities and the content of total phenolics and phenolic acids, as humus constituents, of an ash deposit after 7 years of recultivation were studied. The restoration of both the soil and the vegetation on the ash deposits of the 'Nikola Tesla-A' thermoelectric power plant in Obrenovac (Serbia) is an extremely slow process. Unfavorable physical and chemical characteristics, the toxicity of fly ash, and extreme microclimatic conditions prevented the development of compact plant cover. The abundance and cover of plants increased from the central part of the deposit towards its edges. Festuca rubra L., Crepis setosa Hall., Erigeron canadensis L., Cirsium arvense (L.) Scop., Calamagrostis epigeios (L.) Roth., and Tamarix gallica L. were the most abundant species, thus giving the highest cover. Humus generated during the decomposition process of plant remains represents a completely new product absent in the ash as the starting material. The amount of total phenolics and phenolic acids in fly ash increased from the center of the deposit towards its edges in correlation with the increase in plant abundance and cover. The presence of phenolic acids indicates the ongoing process of humus formation in the ash, in which the most abundant pioneer plants of spontaneously formed plant communities play the main role. Phenolic compounds can serve as reliable bioindicators in an assessment of the success of the recultivation process of thermoelectric power plants' ash deposits.

L. Djurdjevic; M. Mitrovic; P. Pavlovic; G. Gajic; O. Kostic [Institute for Biological Research 'Sinisa Stankovic,' Belgrade (Serbia and Montenegro). Department of Ecology

2006-05-15T23:59:59.000Z

449

Advanced lead acid battery development project. Final report  

Science Conference Proceedings (OSTI)

This project involved laboratory and road testing of the Horizon (registered) advanced lead acid batteries produced by Electrosource, Inc. A variety of electric vehicles in the fleet operated by the Sacramento Municipal Utility District and McClellan Air Force Base were used for road tests. The project was sponsored by the Defense Advanced Research Projects Agency under RA 93-23 entitled Electric Vehicle Technology and Infrastructure. The Horizon battery is a valve regulated, or sealed, lead acid battery produced in a variety of sizes and performance levels. During the project, several design and process improvements on the Horizon battery resulted in a production battery with a specific energy approaching 45 watt-hours per kilogram (Whr/kg) capable of delivering a peak current of 450 amps. The 12 volt, 95 amp-hour (Ahr) Horizon battery, model number 12N95, was placed into service in seven (7) test vehicles, including sedans, prototype lightweight electric vehicles, and passenger vans. Over 20,000 miles have been driven to date on vehicles powered by the Horizon battery. Road test results indicate that when the battery pack is used with a compatible charger and charge management system, noticeably improved acceleration characteristics are evident, and the vehicles provide a useful range almost 20% greater than with conventional lead-acid batteries.

NONE

1997-02-01T23:59:59.000Z

450

Breakdown of Cell Wall Nanostructure in Dilute Acid Pretreated Biomass  

Science Conference Proceedings (OSTI)

The generation of bioethanol from lignocellulosic biomass holds great promise for renewable and clean energy production. A better understanding of the complex mechanisms of lignocellulose breakdown during various pretreatment methods is needed to realize this potential in a cost and energy efficient way. Here, we use small-angle neutron scattering (SANS) to characterize morphological changes in switchgrass lignocellulose across molecular to sub-micron length scales resulting from the industrially-relevant dilute acid pretreatment method. Our results demonstrate that dilute acid pretreatment increases the cross-sectional radius of the crystalline cellulose fibril. This change is accompanied by removal of hemicellulose and the formation of Rg ~ 135 lignin aggregates. The structural signature of smooth cell wall surfaces is observed at length scales larger than 1000 , and it remains remarkably invariable during pretreatment. This study elucidates the interplay of the different biomolecular components in the break down process of switchgrass by dilute acid pretreatment. The results are important for the development of efficient strategies of biomass to biofuel conversion.

Pingali, Sai Venkatesh [ORNL; Urban, Volker S [ORNL; Heller, William T [ORNL; McGaughey, Joseph [ORNL; O'Neill, Hugh Michael [ORNL; Foston, Marcus B [ORNL; Myles, Dean A A [ORNL; Ragauskas, Arthur J [ORNL; Evans, Barbara R [ORNL

2010-01-01T23:59:59.000Z

451

Process for chemical reaction of amino acids and amides yielding selective conversion products  

DOE Patents (OSTI)

The invention relates to processes for converting amino acids and amides to desirable conversion products including pyrrolidines, pyrrolidinones, and other N-substituted products. L-glutamic acid and L-pyroglutamic acid provide general reaction pathways to numerous and valuable selective conversion products with varied potential industrial uses.

Holladay, Jonathan E. (Kennewick, WA)

2006-05-23T23:59:59.000Z

452

BGL4 beta-glucosidase and nucleic acids encoding the same  

DOE Patents (OSTI)

The present invention provides a novel .beta.-glucosidase nucleic acid sequence, designated bgl4, and the corresponding BGL4 amino acid sequence. The invention also provides expression vectors and host cells comprising a nucleic acid sequence encoding BGL4, recombinant BGL4 proteins and methods for producing the same.

Dunn-Coleman, Nigel [Los Gatos, CA; Goedegebuur, Frits [Vlaardingen, NL; Ward, Michael [San Francisco, CA; Yao, Jian [Sunnyvale, CA

2008-01-22T23:59:59.000Z

453

Rheological Properties and Reaction Kinetics of Amidoamine Oxide Surfactants-based Acids with Calcite  

E-Print Network (OSTI)

A new type of viscoelastic amphoteric surfactants (amidoamine oxide) has been examined as a diverting agent during acidizing treatment. Rheological properties of viscoelastic surfactants are a function of surfactant concentration, acid additives, pH, temperature and shear rate. A HPHT rheometer was used to test the effect of common acid additives and organic acids/chelating agents on the apparent viscosity of amidoamine oxide-based acids. The compatibility and thermal stability of surfactants with corrosion inhibitor were also investigated. Rotating disk apparatus was used to examine the kinetic studies of surfactant-based acids with limestone. The results show that the apparent viscosity of surfactant solutions prepared in deionized water, live acid, and spent acid was found to be a function of temperature. Apparent viscosity of live surfactant-based acids was also found to be a function of HCl concentration. Most of acid additives could adversely affect the rheological properties of spent acids. Compatibility tests should be done prior the field application. Cryo-TEM studies show the changes of rod-like micelle structures with the addition of additives. The reaction between surfactant-based acid and limestone was found to be mass transfer limited at 170 degrees F.

Li, Lingling

2011-05-01T23:59:59.000Z

454

transgenes on the level of the target fatty acids in Brassica napus L.  

E-Print Network (OSTI)

The effects of genomic position and copy number of acyl-acyl carrier protein (ACP) thioesterase (TE) transgenes on the major target fatty acid, either lauric acid (C12:0) or palmitic acid (C16:0) depending on the TE, in transgenic Brassica napus seed oil were investigated. Four transgenic parental lines, transformed individually with

Jihong Tang; Rachael Scarth; Brian Fristensky

2003-01-01T23:59:59.000Z

455

Effects of Light and Temperature on Fatty Acid Production in Nannochloropsis Salina  

Science Conference Proceedings (OSTI)

Accurate prediction of algal biofuel yield will require empirical determination of physiological responses to the climate, particularly light and temperature. One strain of interest, Nannochloropsis salina, was subjected to ranges of light intensity (5-850 {mu}mol m{sup -2} s{sup -1}) and temperature (13-40 C); exponential growth rate, total fatty acids (TFA) and fatty acid composition were measured. The maximum acclimated growth rate was 1.3 day{sup -1} at 23 C and 250 {mu}mol m{sup -2} s{sup -1}. Fatty acids were detected by gas chromatography with flame ionization detection (GC-FID) after transesterification to corresponding fatty acid methyl esters (FAME). A sharp increase in TFA containing elevated palmitic acid (C16:0) and palmitoleic acid (C16:1) during exponential growth at high light was observed, indicating likely triacylglycerol accumulation due to photo-oxidative stress. Lower light resulted in increases in the relative abundance of unsaturated fatty acids; in thin cultures, increases were observed in palmitoleic and eicosapentaenoeic acids (C20:5{omega}3). As cultures aged and the effective light intensity per cell converged to very low levels, fatty acid profiles became more similar and there was a notable increase of oleic acid (C18:1{omega}9). The amount of unsaturated fatty acids was inversely proportional to temperature, demonstrating physiological adaptations to increase membrane fluidity. This data will improve prediction of fatty acid characteristics and yields relevant to biofuel production.

Van Wagenen, Jonathan M.; Miller, Tyler W.; Hobbs, Samuel J.; Hook, Paul W.; Crowe, Braden J.; Huesemann, Michael H.

2012-03-12T23:59:59.000Z

456

BGL3 beta-glucosidase and nucleic acids encoding the same  

SciTech Connect

The present invention provides a novel .beta.-glucosidase nucleic acid sequence, designated bgl3, and the corresponding BGL3 amino acid sequence. The invention also provides expression vectors and host cells comprising a nucleic acid sequence encoding BGL3, recombinant BGL3 proteins and methods for producing the same.

Dunn-Coleman, Nigel; Goedegebuur, Frits; Ward, Michael; Yao, Jian

2012-10-30T23:59:59.000Z

457

BGL6 .beta.-glucosidase and nucleic acids encoding the same  

DOE Patents (OSTI)

The present invention provides a novel .beta.-glucosidase nucleic acid sequence, designated bgl6, and the corresponding BGL6 amino acid sequence. The invention also provides expression vectors and host cells comprising a nucleic acid sequence encoding BGL6, recombinant BGL6 proteins and methods for producing the same.

Dunn-Coleman, Nigel; Ward, Michael

2012-10-02T23:59:59.000Z

458

BGL4 beta-glucosidase and nucleic acids encoding the same  

DOE Patents (OSTI)

The present invention provides a novel .beta.-glucosidase nucleic acid sequence, designated bgl4, and the corresponding BGL4 amino acid sequence. The invention also provides expression vectors and host cells comprising a nucleic acid sequence encoding BGL4, recombinant BGL4 proteins and methods for producing the same.

Dunn-Coleman, Nigel (Los Gatos, CA); Goedegebuur, Frits (Vlaardingen, NL); Ward, Michael (San Francisco, CA); Yao, Jian (Sunnyvale, CA)

2011-12-06T23:59:59.000Z

459

BGL5 .beta.-glucosidase and nucleic acids encoding the same  

DOE Patents (OSTI)

The present invention provides a novel .beta.-glucosidase nucleic acid sequence, designated bgl5, and the corresponding BGL5 amino acid sequence. The invention also provides expression vectors and host cells comprising a nucleic acid sequence encoding BGL5, recombinant BGL5 proteins and methods for producing the same.

Dunn-Coleman, Nigel (Los Gatos, CA); Goedegebuur, Frits (Vlaardingen, NL); Ward, Michael (San Francisco, CA); Yao, Jian (Sunnyvale, CA)

2008-03-18T23:59:59.000Z

460

BGL7 beta-glucosidase and nucleic acids encoding the same  

DOE Patents (OSTI)

The present invention provides a novel .beta.-glucosidase nucleic acid sequence, designated bgl7, and the corresponding BGL7 amino acid sequence. The invention also provides expression vectors and host cells comprising a nucleic acid sequence encoding BGL7, recombinant BGL7 proteins and methods for producing the same.

Dunn-Coleman, Nigel; Ward, Michael

2013-01-29T23:59:59.000Z

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


461

Arachidonic Acid Accumulation and Delta-5 Desaturation in Felines After Feeding a Gamma-Linolenic Acid Enriched Diet  

E-Print Network (OSTI)

Feline lipid metabolism is a topic for greater exploration due to this specie?s unique characteristics. Cats express limited Delta 6-desaturase activity necessary for conversion of linoleic acid (LA, 18:2n-6) to arachidonic acid (AA, 20:4n-6). The possibility exists that Gamma-linolenic acid (GLA, 18:3n-6) may serve as a precursor of AA in reproductive tissues especially if coupled with chain elongation and a functionally active Delta 5-desaturase. In addition no research has been conducted regarding feline reproductive Delta 8-desaturase activity as an alternate to the production of AA. To investigate desaturation activities, a group of 26 adult female cats were randomly assigned into 1 of 3 groups based on the diet fed: High Linoleic Acid (HL, n=7), Low Linoleic Acid (LL, n=9), and High Gamma-Linolenic Acid (GLA, n=10).The diets were fed for 300 days prior to ovariohysterectomy at which time EDTA plasma and ovarian, uterine, and subcutaneous adipose tissues were collected. Homogenates of each tissue were prepared and frozen in aliquots at -80 degrees C. Total lipids were extracted from the plasma and tissue homogenates followed by phospholipid (PL) fractionation via thin layer chromatography and fatty acid (FA) analyses by gas chromatography. The Shapiro-Wilks test was used to determine normal distribution of FA data followed by One-Way ANOVA and Tukey multiple comparisons (p<0.05). Plasma PLs were significantly increased in both GLA and dihomo-Gamma-linolenic acid (DGLA, 20:3n-6Delta8,11,14) in the GLA group and statistically increased in 20:2n-6 and 20:3n-6(Delta5,11,14) in the HL group. Uterine tissue homogenates had significantly increased amounts of DGLA and AA, however ovarian tissue showed an increase of only DGLA. Adipose tissue FAs showed significantly high amounts of DGLA in the GLA group. It is concluded that a high GLA diet results in increased AA in uterine, but not ovarian, tissues and thus may supply eicosanoid precursors in support of reproduction. The presence of increased amounts of 20:3n-6(Delta5,11,14) and not AA in the plasma and uterine tissues in the HL group suggests that Delta6-desaturase cannot be induced and that Delta8-desaturase is not active when feeding high dietary LA. Furthermore, the increase in DGLA may provide an adipose storage reservoir for additional conversion under times of metabolic need. These data support the presence of a functionally active Delta5-desaturase in uterine, but not ovarian, tissues. The findings also suggest that increased dietary GLA may be used to meet the AA requirements for reproduction in cats in the absence of an animal based pre-formed source of AA.

Chamberlin, Amy Jo

2009-12-01T23:59:59.000Z

462

Matrix Acidizing Core Flooding Apparatus: Equipment and Procedure Description  

E-Print Network (OSTI)

Core flooding is a commonly used experimental procedure in the petroleum industry. It involves pressurizing a reservoir rock and flowing fluid through it in the laboratory. The cylindrical rock, called a core, can be cut from the reservoir during a separate core drilling operation or a formation outcrop. A core flooding apparatus suitable for matrix acidizing was designed and assembled. Matrix acidizing is a stimulation technique in which hydrochloric acid (HCl) is injected down the wellbore below formation fracture pressure to dissolve carbonate (CaCO3) rock creating high permeability streaks called wormholes. The main components of the apparatus include a continuous flow syringe pump, three core holders, a hydraulic hand pump, two accumulators, a back pressure regulator, and two pressure transducers connected through a series of tubing and valves. Due to the corrosive nature of the acid, the apparatus features Hastelloy which is a corrosion resistant metal alloy. Another substantial feature of the apparatus is the ability to apply 3000psi back pressure. This is the pressure necessary to keep CO2, a product of the CaCO3 and HCl reaction, in solution at elevated temperatures. To perform experiments at temperature, the core holder is wrapped with heating tape and surrounded by insulation. Tubing is wrapped around a heating band with insulation to heat the fluid before it enters the core. A LabVIEW graphical programming code was written to control heaters as well as record temperature and pressure drop across the core. Other considerations for the design include minimizing footprint, operational ease by the user, vertical placement of the accumulators and core holders to minimize gravity effects, and air release valves. Core floods can be performed at varying injection rates, temperatures and pressures up to 5000psi and 250 degF. The apparatus can handle small core plugs, 1 diameter X 1 length, up to 4 X 20 cores. The equipment description includes the purpose, relevant features, and connections to the system for each component. Finally documented is the procedure to run a core flooding test to determine permeability and inject acid complete with an analysis of pressure response data.

Grabski, Elizabeth 1985-

2012-12-01T23:59:59.000Z

463

Two Dimensional Polyamides Prepared From Unsaturated Carboxylic Acids And Amines.  

DOE Patents (OSTI)

A polyamide and a process for preparing the polyamide are disclosed. The process comprises reacting in a reaction mixture a monomer selected from unsaturated carboxylic acids, esters of unsaturated carboxylic acids, anhydrides of unsaturated carboxylic acids, and mixtures thereof, and a first amine to form an intermediate reaction product in the reaction mixture, wherein the first amine is selected from RR.sub.1 NH, RNH.sub.2, RR.sub.1 NH.sub.2.sup.+, RNH.sub.3.sup.+ and mixtures thereof, wherein R and R.sub.1 can be the same or different and each contain between about 1 and 50 carbon atoms and are optionally substituted with heteroatoms oxygen, nitrogen, sulfur, and phosphorus and combinations thereof, and reacting the intermediate reaction product and a second amine to form a polyamide, wherein the second amine is selected from R.sub.2 R.sub.3 NH, R.sub.2 NH.sub.2, R.sub.2 R.sub.3 NH.sub.2.sup.+, R.sub.2 NH.sub.3.sup.+ and mixtures thereof wherein R.sub.2 and R.sub.3 can be the same or different and each contain between about 1 and 50 carbon atoms and are optionally substituted with heteroatoms oxygen, nitrogen, sulfur, and phosphorus and combinations thereof, wherein multiple of the R, R.sub.1, R.sub.2, and R.sub.3 are in vertically aligned spaced relationship along a backbone formed by the polyamide. In one version of the invention, the monomer is selected from maleic anhydride, maleic acid esters, and mixtures thereof. In another version of the invention, the first amine is an alkylamine, such as tetradecylamine, and the second amine is a polyalkylene polyamine, such as pentaethylenehexamine. In yet another version of the invention, the first amine and the second amine are olefinic or acetylenic amines, such as the reaction products of an alkyldiamine and an acetylenic carboxylic acid. The first amine and the second amine may be the same or different depending on the desired polyamide polymer structure.

McDonald, William F. (Utica, OH); Huang, Zhi Heng (East Lansing, MI); Wright, Stacy C. (Lansing, MI); Danzig, Morris (Northbrook, IL); Taylor, Andrew C. (Ann Arbor, MI)

2002-07-17T23:59:59.000Z

464

Induction of acid and oxidative reistance in Escherichia cole 0157:H7 by exposure to short-chain fatty acids  

E-Print Network (OSTI)

Short-chain fatty acids (SCFAs) are commonly used as food preservatives to prevent microbial contamination of meat carcasses. However, the food-borne pathogen, E. coli O157:H7, is more resistant than other E. coli strains to SCFA treatment. Furthermore, those cells that survive SCFA treatment may be better able to survive stress conditions encountered by E. coli O157:H7 in food products and/or its mammalian hosts. I hypothesize that SCFAs encountered by E. coli O157:H7 during its life cycle play a significant role in enhancing its virulence by (1) boosting its resistance to environmental stresses and/or (2) altering the expression of its virulence genes. Exposure to acetate, propionate, butyrate, or a mixture of all three SCFAs enhanced the resistance of both E. coli K-12 and E. coli O157:H7 to acid shock. Adaptation to acetate enhanced the resistance of E. coli O157:H7 to oxidative stress, but did not alter its resistance to heat shock. The SCFA-mediated acid resistance observed in E. coli K-12 and E. coli O157:H7 was dependent on new protein synthesis. The nature and extent of the molecular response of E. coli O157:H7 to SCFAs was characterized via two-dimensional gel electrophoresis and gene array analysis. The identity of proteins induced by SCFAs in E. coli O157:H7 and their potential role(s) in mediating acid and oxidative resistance remain to be determined.

Arnold, Carrie Nell

1999-01-01T23:59:59.000Z

465

Modeling and Optimization of Matrix Acidizing in Horizontal Wells in Carbonate Reservoirs  

E-Print Network (OSTI)

In this study, the optimum conditions for wormhole propagation in horizontal well carbonate acidizing was investigated numerically using a horizontal well acidizing simulator. The factors that affect the optimum conditions are rock mineralogy, acid concentration, temperature and acid flux in the formation. The work concentrated on the investigation of the acid flux. Analytical equations for injection rate schedule for different wormhole models. In carbonate acidizing, the existence of the optimum injection rate for wormhole propagation has been confirmed by many researchers for highly reactive acid/rock systems in linear core-flood experiments. There is, however, no reliable technique to translate the laboratory results to the field applications. It has also been observed that for radial flow regime in field acidizing treatments, there is no single value of acid injection rate for the optimum wormhole propagation. In addition, the optimum conditions are more difficult to achieve in matrix acidizing long horizontal wells. Therefore, the most efficient acid stimulation is only achieved with continuously increasing acid injection rates to always maintain the wormhole generation at the tip of the wormhole at its optimum conditions. Examples of acid treatments with the increasing rate schedules were compared to those of the single optimum injection rate and the maximum allowable rate. The comparison study showed that the increasing rate treatments had the longest wormhole penetration and, therefore, the least negative skin factor for the same amount of acid injected into the formations. A parametric study was conducted for the parameters that have the most significant effects on the wormhole propagation conditions such as injected acid volume, horizontal well length, acid concentration, and reservoir heterogeneity. The results showed that the optimum injection rate per unit length increases with increasing injected acid volume. And it was constant for scenarios with different lateral lengths for a given system of rock/ acid and injected volume. The study also indicated that for higher acid concentration the optimum injection rate was lower. It does exist for heterogeneous permeability formations. Field treatment data for horizontal wells in Middle East carbonate reservoirs were also analyzed for the validation of the numerical acidizing simulator.

Tran, Hau

2013-05-01T23:59:59.000Z

466

Analytical and spectroscopic characterization of humic acids extracted from sewage sludge, manure, and worm compost  

Science Conference Proceedings (OSTI)

Humic acids extracted from sewage sludges, manure, and worm compost have been characterized by chemical and spectroscopic methods. Meaningful differences in the composition were revealed by FTIR, {sup 1}H, {sup 13}C NMR, and visible spectroscopies. These differences allow a differentiation among the products depending on the source from which they were obtained. Humic acid extracted from sewage sludges contains the highest percentage of aliphatic carbon, associated with polysaccharides and proteinaceous structures, and has characteristics close to those of aquatic humic acids. On the other hand, humic acids from manure and worm compost are similar to the humic acids originating from soil.

Deiana, S.; Gessa, C.; Manunza, B.; Seeber, R. (Universita di Sassari (Italy)); Rausa, R. (Eniricerche S.p.A., Milanese (Italy))

1990-07-01T23:59:59.000Z

467

Total Acid Value Titration of Hydrotreated Biomass Fast Pyrolysis Oil: Determination of Carboxylic Acids and Phenolics with Multiple End-Point Detection  

Science Conference Proceedings (OSTI)

Total acid value titration has long been used to estimate corrosive potential of petroleum crude oil and fuel oil products. The method commonly used for this measurement, ASTM D664, utilizes KOH in isopropanol as the titrant with potentiometric end point determination by pH sensing electrode and Ag/AgCl reference electrode with LiCl electrolyte. A natural application of the D664 method is titration of pyrolysis-derived bio-oil, which is a candidate for refinery upgrading to produce drop in fuels. Determining the total acid value of pyrolysis derived bio-oil has proven challenging and not necessarily amenable to the methodology employed for petroleum products due to the different nature of acids present. We presented an acid value titration for bio-oil products in our previous publication which also utilizes potentiometry using tetrabutylammonium hydroxide in place of KOH as the titrant and tetraethylammonium bromide in place of LiCl as the reference electrolyte to improve the detection of these types of acids. This method was shown to detect numerous end points in samples of bio-oil that were not detected by D664. These end points were attributed to carboxylic acids and phenolics based on the results of HPLC and GC-MS studies. Additional work has led to refinement of the method and it has been established that both carboxylic acids and phenolics can be determined accurately. Use of pH buffer calibration to determine half-neutralization potentials of acids in conjunction with the analysis of model compounds has allowed us to conclude that this titration method is suitable for the determination of total acid value of pyrolysis oil and can be used to differentiate and quantify weak acid species. The measurement of phenolics in bio-oil is subject to a relatively high limit of detection, which may limit the utility of titrimetric methodology for characterizing the acidic potential of pyrolysis oil and products.

Christensen, E.; Alleman, T. L.; McCormick, R. L.

2013-01-01T23:59:59.000Z

468

An Improved Model for Sandstone Acidizing and Study of the Effect of Mineralogy and Temperature on Sandstone Acidizing Treatments and Simulation  

E-Print Network (OSTI)

Sandstone acidizing is a complex operation because the acidizing fluid reacts with a variety of minerals present in the formation that results in a wide range of reaction products. The hydrofluoric acid (HF) reaction rate differs widely from mineral to mineral because of the variation in the reaction rate and the area of contact with the injected fluid. The series of reactions occurring in sandstone makes it all the more difficult to find the exact individual reaction rate constants. An improved model that provides better estimates of the outcome of a sandstone acidizing treatment is developed following a review of previous sandstone acidizing models. The model follows the lumped mineral methodology and is based mainly on the kinetic approach. The use of accurate reaction-rate laws allows the model to effectively predict the consumption of acidizing fluid during the stimulation treatment. The consideration of a proper equation for the silica gel filming factor accounts for the fact that some clay becomes inaccessible to the acid when silica gel precipitates on their surface. The proposed model is shown here to be valid in extrapolating laboratory coreflood data and predicting the effluent acid concentration at various flow rates. The damage during sandstone acidizing can be minimized when stimulation treatments are designed according to the percentage of carbonate in the formation, type and amount of clay in the formation and the reservoir bottomhole temperature. Most of the available software for design and evaluation of acidizing treatments do not consider the temperature and mineralogy effects extensively. We studied one such software and developed recommendations to improve the design and evaluation of sandstone acidizing treatments by taking into account the multifaceted effects of temperature and mineralogy in increasingly deep and hot sandstone environments. These recommendations will be of great use in the times to come as most of the wells will have to be drilled at greater depths in search for new reserves.

Agarwal, Amit Kumar

2013-05-01T23:59:59.000Z

469

Effect of droplet size on the behavior and characteristics of emulsified acid  

E-Print Network (OSTI)

Emulsified acids have been extensively used in the oil industry since 1933. Most of the available research and publications discussed mainly the application of emulsified acid in the field. A fair number of the published work also discussed in depth some of the emulsified acid properties such viscosity, stability and reactivity. However, all of the available research discussed the emulsified acid without sufficient details of its preparation. Beside their chemical composition, the ways emulsified acids are prepared cause significant differences in their physical properties. The characterization of emulsified acid by its droplet size and size distribution complements its chemical composition and gives the emulsified acid a unique description and thus reproducible properties. No previous study considered the impact of the droplet size on the characteristics and properties of emulsified acid. Therefore, the main objective of this research is to study the effects of the droplet size on various properties of emulsified acid such as viscosity, stability and reactivity. Results showed that the droplet size and size distribution have a strong effect on the stability, viscosity and diffusion rate of the emulsified acid. The results of this work are important because knowledge of the effect of the droplet size on major design parameters will guide the way emulsified acid is prepared and applied in the field.

Almutairi, Saleh Haif

2008-05-01T23:59:59.000Z

470

Solid-State 17O NMR Study of Benzoic Acid Adsorption On Metal Oxide Surfaces  

Science Conference Proceedings (OSTI)

Solid-state 17O NMR spectra of 17O-labeled benzoic and anisic acids are reported and benzoic acid is used to probe the surface of metal oxides. Complexes formed when benzoic acid is dry-mixed with mesoporous silica, and nonporous titania and alumina are characterized. Chemical reactions with silica are not observed. The nature of benzoic acid on silica is a function of the water content of the oxide. The acid disperses in the pores of the silica if the silica is in equilibrium with ambient laboratory humidity. The acid displays high mobility as evidenced by a liquid-like, Lorentzian resonance. Excess benzoic acid remains as the crystalline hydrogen-bonded dimer. Benzoic acid reacts with titania and alumina surfaces in equilibrium with laboratory air to form the corresponding titanium and aluminum benzoates. In both materials the oxygen of the 17O-labeled acid is bound to the metal, showing the reaction proceeds by bond formation between oxygen deficient metal sites and the oxygen of the carboxylic acid. 27Al MAS NMR confirms this mechanism for the reaction on alumina. Dry mixing of benzoic acid with alumina rapidly quenches pentacoordinate aluminum sites, excellent evidence that these sites are confined to the surface of the alumina particles.

Hagaman, Edward {Ed} W [ORNL; Chen, Banghao [ORNL; Jiao, Jian [ORNL; Parsons, Williams [Oak Ridge National Laboratory (ORNL)

2012-01-01T23:59:59.000Z

471

Hanford waste vitrification plant hydrogen generation study: Preliminary evaluation of alternatives to formic acid  

DOE Green Energy (OSTI)

Oxalic, glyoxylic, glycolic, malonic, pyruvic, lactic, levulinic, and citric acids as well as glycine have been evaluated as possible substitutes for formic acid in the preparation of feed for the Hanford waste vitrification plant using a non-radioactive feed stimulant UGA-12M1 containing substantial amounts of aluminum and iron oxides as well as nitrate and nitrite at 90C in the presence of hydrated rhodium trichloride. Unlike formic acid none of these carboxylic acids liberate hydrogen under these conditions and only malonic and citric acids form ammonia. Glyoxylic, glycolic, malonic, pyruvic, lactic, levulinic, and citric acids all appear to have significant reducing properties under the reaction conditions of interest as indicated by the observation of appreciable amounts of N{sub 2}O as a reduction product of,nitrite or, less likely, nitrate at 90C. Glyoxylic, pyruvic, and malonic acids all appear to be unstable towards decarboxylation at 90C in the presence of Al(OH){sub 3}. Among the carboxylic acids investigated in this study the {alpha}-hydroxycarboxylic acids glycolic and lactic acids appear to be the most interesting potential substitutes for formic acid in the feed preparation for the vitrification plant because of their failure to produce hydrogen or ammonia or to undergo decarboxylation under the reaction conditions although they exhibit some reducing properties in feed stimulant experiments.

King, R.B.; Bhattacharyya, N.K.; Kumar, V.

1996-02-01T23:59:59.000Z

472

Common Effects of Acidic Activators on Large-Scale Chromatin Structure and Transcription  

E-Print Network (OSTI)

Large-scale chromatin decondensation has been observed after the targeting of certain acidic activators to heterochromatic chromatin domains. Acidic activators are often modular, with two or more separable transcriptional activation domains. Whether these smaller regions are sufficient for all functions of the activators has not been demonstrated. We adapted an inducible heterodimerization system to allow systematic dissection of the function of acidic activators, individual subdomains within these activators, and short acidic-hydrophobic peptide motifs within these subdomains. Here, we demonstrate that large-scale chromatin decondensation activity is a general property of acidic activators. Moreover, this activity maps to the same acidic activator subdomains and acidic-hydrophobic peptide motifs that are responsible for transcriptional activation. Two copies of a mutant peptide motif of VP16 (viral protein 16) possess large-scale chromatin decondensation activity but minimal transcriptional activity, and a synthetic acidic-hydrophobic peptide motif had large-scale chromatin decondensation activity comparable to the strongest full-length acidic activator but no transcriptional activity. Therefore, the general property of large-scale chromatin decondensation shared by most acidic activators is not simply a direct result of transcription per se but is most likely the result of the concerted action of coactivator proteins recruited by the activators short acidic-hydrophobic peptide motifs. Several transcriptional activators contain two or more distinct

Anne E. Carpenter; Sevinci Memedula; Matthew J. Plutz; Andrew S. Belmont

2004-01-01T23:59:59.000Z

473

Capture and release of mixed acid gasses with binding organic liquids  

DOE Patents (OSTI)

Reversible acid-gas binding organic liquid systems that permit separation and capture of one or more of several acid gases from a mixed gas stream, transport of the liquid, release of the acid gases from the ionic liquid and reuse of the liquid to bind more acid gas with significant energy savings compared to current aqueous systems. These systems utilize acid gas capture compounds made up of strong bases and weak acids that form salts when reacted with a selected acid gas, and which release these gases when a preselected triggering event occurs. The various new materials that make up this system can also be included in various other applications such as chemical sensors, chemical reactants, scrubbers, and separators that allow for the specific and separate removal of desired materials from a gas stream such as flue gas.

Heldebrant, David J. (Richland, WA); Yonker, Clement R. (Kennewick, WA)

2010-09-21T23:59:59.000Z

474

Universal nucleic acids sample preparation method for cells, spores and their mixture  

DOE Patents (OSTI)

The present invention relates to a method for extracting nucleic acids from biological samples. More specifically the invention relates to a universal method for extracting nucleic acids from unidentified biological samples. An advantage of the presently invented method is its ability to effectively and efficiently extract nucleic acids from a variety of different cell types including but not limited to prokaryotic or eukaryotic cells and/or recalcitrant organisms (i.e. spores). Unlike prior art methods which are focused on extracting nucleic acids from vegetative cell or spores, the present invention effectively extracts nucleic acids from spores, multiple cell types or mixtures thereof using a single method. Important that the invented method has demonstrated an ability to extract nucleic acids from spores and vegetative bacterial cells with similar levels effectiveness. The invented method employs a multi-step protocol which erodes the cell structure of the biological sample, isolates, labels, fragments nucleic acids and purifies labeled samples from the excess of dye.

Bavykin, Sergei (Darien, IL)

2011-01-18T23:59:59.000Z

475

Dissolution of oxygen reduction electrocatalysts in acidic environment  

E-Print Network (OSTI)

Platinum (Pt) alloy nanoparticles are used as catalysts in electrochemical cells to reduce oxygen to water and to oxidize hydrogen; the overall reaction converts chemical energy into electrical energy. These nanocatalysts are deposited on a carbon substrate and their catalytic function takes place in acid medium. This harsh environment causes an undesired reaction, which is the dissolution of the metal atoms into the acid medium; thus affecting the catalyst life. This dissertation aims to investigate the dissolution mechanism of fuel cell cathode catalysts at the atomic level starting from the oxygen reaction intermediates on the cathode catalyst surface and propose guidelines to improve cathode catalysts durability based on our proposed mechanism. Density functional theory is employed to study various possible scenarios with the goals of understanding the mechanism of the metal atom dissolution process and establishing some guidelines that permit a rational design of catalysts with better stability against dissolution. A thermodynamic analysis of potential metal dissolution reactions in acid medium is presented first, using density functional theory calculations to explore the relative stabilities of transition metals in relation to that of Pt. The study is performed by comparing the change in reaction Gibbs free energies for different metals in a given dissolution reaction. Then, a series of density functional theory studies, tending to investigate the adsorbed atomic oxygen absorption process from cathode catalyst surface into its subsurface, includes: 1) the oxygen adsorption on various catalyst surfaces and oxygen absorption in subsurface sites to figure out the minimum energy pathway and energy barrier of on-surface oxygen migration and absorption into subsurface; 2) the oxygen coverage, the other oxygen reduction reaction intermediates, and water effects on the oxygen absorption process according to reaction pathways, energy barriers, and thermodynamic analysis; 3) the oxygen absorption process on several Pt-based alloys with various compositions and components to find out the best alloy to inhibit atomic oxygen absorption including both kinetic and thermodynamic analyses, and the effects of such alloyed species on the inhibition process.

Gu, Zhihui

2007-12-01T23:59:59.000Z

476

An In-depth Investigation of an Aluminum Chloride Retarded Mud Acid System on Sandstone Reservoirs  

E-Print Network (OSTI)

Sandstone acidizing using mud acid is a quick and complex process where dissolution and precipitation occur simultaneously. Retarded mud acids are less reactive with the rock reducing the reaction rate hence increased penetration into the formation to remove deep damage. To understand thoroughly the retarded mud acid system, an in-depth investigation of the reaction of HF (hydrofluoric) and H2SiF6 (fluorosilic acid) with alumino silicates and the retarded system is undertaken using coreflood analysis and mineralogy analysis using the inductively coupled plasma. Coreflood analysis is used to understand and investigate the permeability changes in the sandstone rock as the retarded mud acid is injected at different conditions and the inductively coupled plasma (ICP) is used to investigate the effluent samples from the coreflood analysis to properly understand this system. Several issues that have not been addressed previously in literature are identified and discussed, including an optimum flowrate when sandstone is acidized, by acidizing the sandstone rock with a retarded acid system at various flowrates and determining the initial and final permeabilities. Also investigated is the retarded acids compatibility with ferric iron and a comparison of the retarded acid system to regular acid to consequently enable a thorough understanding of the retarded mud acid system using aluminum chloride (AlRMHF). Based on the work done, it is found that the absence of a hydrochloric (HCl) preflush is very detrimental to the sandstone core as calcium fluoride is precipitated and the retarded acid system is found to be compatible with iron(III) as an impurity. The regular acid (RMHF) dissolves considerably more silicon and produces more fines than the AlRMHF. 1cc/min is found to be the optimum flowrate when a sandstone core is acidized with AlRMHF. At this low flowrate, less silicon is dissolved, more aluminum is seen in the effluent and more calcium is dissolved. The retarded aluminum acid system considerably reduces the rate of reaction as evidenced in the dissolution reaction when compared to a regular mud acid system. This reduced rate of reaction implies deeper acid penetration and ultimately deeper damage removal.

Aneto, Nnenna

2012-05-01T23:59:59.000Z

477

State of charge monitor for sealed lead--acid cells  

DOE Green Energy (OSTI)

Instrumentation was designed for monitoring the state of charge of sealed lead--acid cells during discharge. This monitor utilizes the cell voltage during discharge, compensating for variations in load current and temperature. The discharge voltage is converted to a linear function of state of charge by a nonlinear amplifier. Statistics are given for the uncertainty in the monitor. Below 80% state of charge the monitor is accurate to better than +-5% state of charge at all currents in the C to C/10 range. 9 figures, 12 tables.

Zimmerman, A.H.; Martinelli, M.R.; Badcock, C.C.

1978-07-20T23:59:59.000Z

478

Cellulase Accessibility of Dilute-Acid Pretreated Corn Stover  

SciTech Connect

The conclusions of this presentation are: (1) The dilute-acid pretreatment reduces xylan content in corn stover. This reduction in xylan content appears to render the substrate less recalcitrant. Below {approx}8%, xylan content is no longer the dominant factor in biomass recalcitrance. (2) Decreasing xylan content of corn stover also created more binding sites for Cel7A, but no strong correlation with actual xylan content. (3) We found no correlation between bound Cel7A concentration and lignin content. Maybe lignin is blocking the way for Cel7A? The contribution of lignin to biomass recalcitrance requires further investigation.

Jeoh, T.; Johnson, D. K.; Adney, W. S.; Himmel, M. E.

2005-01-01T23:59:59.000Z

479

K-Area Acid/Caustic Basin groundwater monitoring report  

SciTech Connect

During second quarter 1992, samples from the seven older KAC monitoring wells at the K-Area Acid/Caustic Basin were analyzed for herbicides, indicator parameters, major ions, pesticides, radionuclides, turbidity, and other constituents. New wells FAC 8 and 9 received the first of four quarters of comprehensive analyses and GC/MS VOA (gas chromatograph/ mass spectrometer volatile organic analyses). Monitoring results that exceeded the US Environmental Protection Agency's Primary Drinking Water Standards (PDWS) or the Savannah River Site (SRS) flagging criteria or turbidity standards during the quarter are discussed in this report.

Thompson, C.Y.

1992-09-01T23:59:59.000Z