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Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Global relationships of total alkalinity with salinity and temperature in surface waters of the world's oceans  

E-Print Network (OSTI)

Global relationships of total alkalinity with salinity and temperature in surface waters, R. A. Feely, and R. M. Key (2006), Global relationships of total alkalinity with salinity 35)2 + d (SST Ã? 20) + e (SST Ã? 20)2 fits surface total alkalinity (AT) data for each of five

2

A particulate non-specific alkaline phosphatase in Saccharomyces cerevisiae  

E-Print Network (OSTI)

. Dennis J. Opheim A previously undefined alkaline phosphatase in yeast, which is particulate, has been found. This latter form has no mobil- ity on polyacrylamide gels and can be sedimented after centri- fugation at 200, 000 x g for one hour. Over 90X... of the enzyme activity can be solubilized from the particulate fraction with 100 mM sodium cholate. In the solubilized state this enzyme has been found to migrate in the same position on polyacrylamide gels as the already known soluble repressible alkaline...

Mitchell, James Kent

1980-01-01T23:59:59.000Z

3

Temperature dependent surface electrochemistry on Pt singlecrystals in alkaline electrolyte: Part 3: The oxygen reductionreaction  

SciTech Connect

The kinetics of the oxygen reduction reaction (ORR) was studied in alkaline electrolyte at 293-333K on Pt(hkl) surfaces by means of the rotating ring-disk electrode technique with solution phase peroxide detected at the ring electrode. The ORR on Pt(hkl) was found to be highly structure sensitive with activities increasing in the sequence (111) > (100) > (110)(1x2). Very similar apparent activation energies (37-45 {+-} 5 kJmol-1, {eta} = 0.35 V) were found on all three surfaces. Furthermore, at elevated temperature, significantly smaller amounts of peroxide are formed in agreement with enhanced peroxide reduction rates by increasing temperature. We found that the Tafel slopes on all three single crystal surfaces decrease with increasing temperature, indicating that the logi-E relationship is not represented by a classical Butler-Volmer expression. Based on the kinetic analysis of the polarization curves and from simulations of logi-E curves, we propose that the rate of the ORR on Pt(hkl) in alkaline solution is mainly determined by the potential/temperature dependent surface coverage by OH{sub ad}. We propose two modes of action of the OH{sub ad}: (i) OH{sub ad} blocks the adsorption of O{sub 2} on active platinum sites; and (ii) OH{sub ad} alters the adsorption energy of intermediates which are formed during the ORR on Pt sites.

tom.schmidt@psi.ch

2002-08-01T23:59:59.000Z

4

Experimental investigation of sand consolidation using high-temperature alkaline solution  

E-Print Network (OSTI)

) solution of sodium carbonate (pH 11-12). The sample was placed in a vertical 18 in. long aluminum cylindrical cell with an ID of 1.5 in.. The top half of the cell was thermally insulated while the bottom half was cooled. Hot alkaline solution was injected...

Moreno Romero, Fidel Enrique

2012-06-07T23:59:59.000Z

5

NOVEL SPINEL-FAMILY REFRACTORIES FOR HIGH-TEMPERATURE, HIGH-ALKALINE ENVIRONMENTS  

SciTech Connect

Currently available refractory materials are often limited in their application by many factors including chemical attack, mechanical degradation, temperature limitations, and installation or repair issues. Additionally, there are energy losses associated with the above considerations as well as environmental impacts. The research objectives of this project are to develop innovative refractory compositions based on the spinel crystal structure utilizing novel aggregates, binder systems (bonds), methods of phase formation, and refractory application systems. Efforts to this end and results to date are discussed.

Hemrick, James Gordon [ORNL] [ORNL; Smith, Jeffrey D [ORNL] [ORNL; Damiano, John [ORNL] [ORNL

2009-01-01T23:59:59.000Z

6

Specific heat of apple at different moisture contents and temperatures  

E-Print Network (OSTI)

This work discusses results of experimental investigations of the specific heat, $C$, of apple in a wide interval of moisture contents ($W=0-0.9$) and temperatures ($T = 283-363$ K). The obtained data reveal the important role of the bound water in determination of $C(W,T)$ behaviour. The additive model for description of $C(W)$ dependence in the moisture range of $0.1apple was considered as a mixture of water and hydrated apple material (water plasticised apple) with specific heat $C_h$. The difference between $C_h$ and specific heat of dry apple, $\\Delta Cb=C_h-C_d$, was proposed as a measure of the excess contribution of bound water to the specific heat. The estimated amounts of bound water $W_b$ were comparable with the monolayer moisture content in apple. The analytical equation was proposed for approximation of $C(W,T)$ dependencies in the studied intervals of moisture content and temperature.

Viacheslav Mykhailyk; Nikolai Lebovka

2013-05-11T23:59:59.000Z

7

Phonon dispersion, phonon specific heat, and Debye temperature of high-temperature superconductors  

Science Journals Connector (OSTI)

A simple model representing the low-frequency acoustical and optical modes of the high-temperature superconductors (HTSC’s) leads to a surprisingly realistic representation of the low-temperature specific heats cv(T) and the corresponding Debye temperatures FTHETA(T) of the HTSC’s. The model allows us to relate the characteristics and peculiarities of cv(T) and FTHETA(T) directly to various features of the low-frequency phonon dispersion, and it is found that cv and FTHETA can exhibit rather well the identifiable features of phonon anomalies. For instance, a surprising result is that optic Einstein-like modes at ?E=2 THz (h?E/kB=96 K) in our model begin to have an effect at 6 K. This behavior has potentially important consequences for the procedure of separating the phonon contribution from the measured specific heat, in order to obtain the nonphonon specific-heat contributions. Another consequence of the occurrence of these Einstein modes is the presence of low-frequency phonons with large wave vectors, which means that umklapp scattering can begin to play a role at temperatures lower than usually assumed. This, in turn, may require a modification of the customary qualitative picture of the low-temperature electrical and thermal conductivities.

F. W. de Wette and A. D. Kulkarni

1992-12-01T23:59:59.000Z

8

Specific Heats of Zirconium Alloys at Low Temperatures  

Science Journals Connector (OSTI)

The specific heats of dilute alloys of silver, cadmium, indium, tin, and antimony in hexagonal zirconium have been measured from 1.2 to 4.5°K. For each alloy the specific heat obeys the relation c=?T+?T3 within the experimental error. All of these solutes increase ? linearly with concentration and d?dx is linearly related to the chemical valence of the solute. The increase in ? in the tin-zirconium alloys shows that all electrons outside closed shells cannot be treated as equivalent in the rigid band model of alloying. All of these solutes increase the density of states of zirconium, providing evidence for a zone overlap in the zirconium d band and for a small number of electrons in a new band. All of the solutes increase the lattice specific heat and the Debye temperature is a linear function of solute concentration for each of these alloy systems. d?dx is not simply related to the solute valence but shows a close correlation with the magnitude of the rate of change of the distance between atoms at (0,0,0) and (13, 23, ½) of the hexagonal cell. Additions of tin to zirconium do not change the average interaction potential of the BCS theory appreciably.

G. D. Kneip; Jr.; J. O. Betterton; Jr.; J. O. Scarbrough

1963-09-15T23:59:59.000Z

9

E-Print Network 3.0 - alkaline earth ions Sample Search Results  

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

tested. Among the different network modifiers,the earth-alkaline... is the simbol that indicates the specific alkaline ion. si4+ A ... Source: Ecole Polytechnique,...

10

Low temperature specific heat of superconducting ternary intermetallics  

Science Journals Connector (OSTI)

A systematic investigation on the thermodynamic properties of La-based ternary intermetallic superconductors crystallizing in a U3Ni4Si4-type structure is presented. The U3Ni4Si4-type structure consists of a characteristic intergrowth of periodic BaAl4 (ThCr2Si2)- and AlB2-type segments. Pristine low temperature specific heat data for recently discovered members La3Ni4Si4 and La3Ni4Ge4 with Tcs of 1.0 and 0.7 K, respectively, are presented as well as La3Pd4Ge4 with the highest Tc of 2.5 K in the U3Ni4Si4-type group. Owing to the higher Tcs of U3Ni4Si4-type superconductors than the related ThCr2Si2-type compounds, comparisons are drawn in our investigations of the ternary intermetallics of LaPd2Ge2, LaNi2Si2, and LaNi2Ge2 having a ThCr2Si2-type structure. Our investigations of the thermodynamic properties show that La3Ni4Si4 and La3Ni4Ge4 have higher values of ?n, N(EF), and ?D than La3Pd4Ge4. The same trend was found in ThCr2Si2-type compounds of LaPd2Ge2, LaNi2Si2, and LaNi2Ge2. It turns out that the difference in Tc between La3Pd4Ge4, La3Ni4Si4, and La3Ni4Ge4, as well as the relatively higher Tc of the U3Ni4Si4-type superconductors than of the related ThCr2Si2-type compounds, are largely due to the strength of electron–phonon coupling.

S Kasahara; H Fujii; H Takeya; T Mochiku; A D Thakur; K Hirata

2008-01-01T23:59:59.000Z

11

The critical temperature of superconductor and its electronic specific heat  

E-Print Network (OSTI)

It is shown that the critical temperature of the superconductor is related to the Sommerfeld constant, i.e. it is determined by the Fermi energy for I-type superconductors. The estimation of properties of II-type superconductors reveals a somewhat different relation of critical temperature and Fermi energy. Among the high-temperature superconducting ceramics there are the both - I and II - types superconductors.

B. V. Vasiliev

2010-08-09T23:59:59.000Z

12

The effect of alkaline additives on the performance of surfactant systems designed to recover light oils  

SciTech Connect

Surfactant flooding is flexible because of the ability to optimize formulations for a wide range of reservoir conditions and crude oil types. The objective for this work was to determine if the addition of alkaline additives will allow the design of surfactant formulations that are effective for the recovery of crude oil, while, at the same time, maintaining the surfactant concentration at a much lower level than has previously been used for micellar flooding. Specifically, the focus of the work was on light, midcontinent crudes that typically have very low acid contents. These oils are typical of much of the midcontinent resource. The positive effect of alkaline additives on the phase behavior of the surfactant formulations and acidic crude oils is well known. The extension to nonacidic and slightly acidic oils is not obvious. Three crude oils, a variety of commercial surfactants, and several alkaline additives were tested. The oils had acid numbers that ranged from 0.13, which is quite low, to less than 0.01 mg KOH/g of oil. Alkaline additives were found to be very effective in recovering Delaware-Childers (OK) oil at elevated temperatures, but much less effective at reservoir temperatures. Alkaline additives were very effective with Teapot Dome (WY) oil. With Teapot Dome oil, surfactant/alkali systems produced ultralow IFT values and recovered 60% of the residual oil that remained after waterflooding. The effect of alkaline additives on recovering Hepler (KS) oil was minimal. The results of this work indicate that alkaline additives do have merit for use in surfactant flooding of low acid crude oils; however, no universal statement about applicability can be made. Each oil behaves differently, with this treatment, and the effect of alkaline additives must be determined (at reservoir conditions) for each oil. 23 refs., 13 figs., 3 tabs.

French, T.R.; Josephson, C.B.; Evans, D.B.

1991-02-01T23:59:59.000Z

13

Anodes for alkaline electrolysis  

DOE Patents (OSTI)

A method of making an anode for alkaline electrolysis cells includes adsorption of precursor material on a carbonaceous material, conversion of the precursor material to hydroxide form and conversion of precursor material from hydroxide form to oxy-hydroxide form within the alkaline electrolysis cell.

Soloveichik, Grigorii Lev (Latham, NY)

2011-02-01T23:59:59.000Z

14

The effect of alkaline agents on retention of EOR chemicals  

SciTech Connect

This report summarizes a literature survey on how alkaline agents reduce losses of surfactants and polymers in oil recovery by chemical injection. Data are reviewed for crude sulfonates, clean anionic surfactants, nonionic surfactants, and anionic and nonionic polymers. The role of mineral chemistry is briefly described. Specific effects of various alkaline anions are discussed. Investigations needed to improve the design of alkaline-surfactant-polymer floods are suggested. 62 refs., 28 figs., 6 tabs.

Lorenz, P.B.

1991-07-01T23:59:59.000Z

15

2006 Alkaline Membrane Fuel Cell Workshop Final Report  

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

Workshop report from the Alkaline Membrane Fuel Cell Workshop held December 11-13, 2006, in Phoenix, Arizona. This report highlights specific aspects of the workshop and reports on general consensus (and dissent) of the joint session. The findings and key recommendations of individual breakout groups from the Alkaline Membrane Fuel Cell Workshop are also reported.

16

Influence of physicochemical properties of alkaline solutions and temperature on the hydrogen evolution reaction on porous lanthanum-phosphate-bonded nickel electrodes  

SciTech Connect

A steady-state method and ac impedance spectroscopy were used to investigate the hydrogen evolution reaction (HER) on porous lanthanum-phosphate-bonded nickel (LPBN) electrodes in 9M NaOH and KOH solutions at temperatures ranging from 20 to 70C. The Tafel slopes, exchange current densities, and overpotential at a current density of 250 mA/cm[sup 2] were obtained from steady-state measurements. The ac impedance data were analyzed using the porous-electrode model, and the kinetic parameters of the HER and double-layer capacitances were determined. The pore length was deduced to be 64 to 73 [mu]m compared to 1 [mu]m for the diameter. The effect of temperature and the nature of the electrolyte on the intrinsic electrocatalytic activity of the LPBN electrodes are discussed.

Dumont, H.; Los, P.; Menard, H. (Univ. de Sherbrooke, Quebec (Canada). Dept. de Chimie); Brossard, L. (Inst. de recherche d'Hydro-Quebec, Varennes, Quebec (Canada))

1994-05-01T23:59:59.000Z

17

Steady state temperature profiles in two simulated liquid metal reactor fuel assemblies with identical design specifications  

SciTech Connect

Temperature data from steady state tests in two parallel, simulated liquid metal reactor fuel assemblies with identical design specifications have been compared to determine the extent to which they agree. In general, good agreement was found in data at low flows and in bundle-center data at higher flows. Discrepancies in the data wre noted near the bundle edges at higher flows. An analysis of bundle thermal boundary conditions showed that the possible eccentric placement of one bundle within the housing could account for these discrepancies.

Levin, A.E.; Carbajo, J.J.; Lloyd, D.B.; Montgomery, B.H.; Rose, S.D.; Wantland, J.L.

1985-01-01T23:59:59.000Z

18

LITERATURE REVIEW OF PUO2 CALCINATION TIME AND TEMPERATURE DATA FOR SPECIFIC SURFACE AREA  

SciTech Connect

The literature has been reviewed in December 2011 for calcination data of plutonium oxide (PuO{sub 2}) from plutonium oxalate Pu(C{sub 2}O{sub 4}){sub 2} precipitation with respect to the PuO{sub 2} specific surface area (SSA). A summary of the literature is presented for what are believed to be the dominant factors influencing SSA, the calcination temperature and time. The PuO{sub 2} from Pu(C{sub 2}O{sub 4}){sub 2} calcination data from this review has been regressed to better understand the influence of calcination temperature and time on SSA. Based on this literature review data set, calcination temperature has a bigger impact on SSA versus time. However, there is still some variance in this data set that may be reflecting differences in the plutonium oxalate preparation or different calcination techniques. It is evident from this review that additional calcination temperature and time data for PuO{sub 2} from Pu(C{sub 2}O{sub 4}){sub 2} needs to be collected and evaluated to better define the relationship. The existing data set has a lot of calcination times that are about 2 hours and therefore may be underestimating the impact of heating time on SSA. SRNL recommends that more calcination temperature and time data for PuO{sub 2} from Pu(C{sub 2}O{sub 4}){sub 2} be collected and this literature review data set be augmented to better refine the relationship between PuO{sub 2} SSA and its calcination parameters.

Daniel, G.

2012-03-06T23:59:59.000Z

19

Specific  

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

Specific Specific energy for pulsed laser rock drilling Z. Xu, a) C. B. Reed, and G. Konercki Technology Development Division, Argonne National Laboratory, Argonne, Illinois 60540 R. A. Parker b) Parker Geoscience Consulting, LLC, Arvada, Colorado 80403 B. C. Gahan Gas Technology Institute, Des Plains, Illinois 60018 S. Batarseh c) and R. M. Graves Department of Petroleum Engineering, Colorado School of Mines, Golden, Colorado 80401 H. Figueroa Petroleos de Venezuela INTEVEP, S.A., Caracas 1070A, Venezuela N. Skinner Halliburton Energy Service, Carrollton, Texas 75006 Í‘Received 20 December 2001; accepted for publication 19 August 2002Í’ Application of advanced high power laser technology to oil and gas well drilling has been attracting significant research interests recently among research institutes, petroleum industries, and universities. Potential laser or laser-aided

20

Alkaline Membrane Fuel Cell Workshop  

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

A workshop on alkaline membrane fuel cells (AMFC) was held May 8-9, 2011, before the 2011 Hydrogen and Fuel Cells Annual Merit Review, at Crystal Gateway Marriott in Arlington, Virginia.

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Alkalinity tolerance of peach rootstocks  

E-Print Network (OSTI)

ALKALINITY TOLERANCE OF PEACH ROOTSTOCKS A Thesis by YAN SHI Submitted to the Office of Graduate Studies of Texas A8 M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1992 Major Subject...: Horticulture ALKALINITY TOLERANCE OF PEACH ROOTSTOCKS A Thesis by YAN SHI Approved as to style and content by: David H. Byrne (Chair of committee) Richard H. Loeppert (Member) David Wm. Reed (Member) R. Daniel lineberger (Head of Department) May...

Shi, Yan

2012-06-07T23:59:59.000Z

22

Temperature dependence of the thermal expansivity and the specific heat near the nematic-isotropic (NI) phase transition in PAA  

Science Journals Connector (OSTI)

Temperature dependence of the thermal expansivity ?p and the specific heat Cp has been studied for the nematic-isotropic (NI) phase transition (TNI = 133.9 °C) of PAA. Our calculated thermal expansivity is in good agreement with the prediction of Maier and Saupe. Our calculated specific heat is compared with the experimental Cp near the transition temperature TNI. Above and below TNI, calculated and observed Cp exhibit some discrepancies for PAA. Discrepancies may be due to the approximations used in our analysis given here.

E. Kilit; H. Yurtseven

2008-01-01T23:59:59.000Z

23

The specific heats of GdCl3, GdBr3, and GdI3 at low temperatures  

Science Journals Connector (OSTI)

The specific heats of GdCl3, GdBr3, and GdI3 were measured in the temperature ranges from 1.3° to 4.4° K, from 1.3° to 5.7° K, and from 1.5° to 5.7° K, respectively. Each of these salts was found to have a magnet...

V. Hovi; R. Vuola; L. Salmenperä

24

Development of alkaline fuel cells.  

SciTech Connect

This project focuses on the development and demonstration of anion exchange membrane (AEM) fuel cells for portable power applications. Novel polymeric anion exchange membranes and ionomers with high chemical stabilities were prepared characterized by researchers at Sandia National Laboratories. Durable, non-precious metal catalysts were prepared by Dr. Plamen Atanassov's research group at the University of New Mexico by utilizing an aerosol-based process to prepare templated nano-structures. Dr. Andy Herring's group at the Colorado School of Mines combined all of these materials to fabricate and test membrane electrode assemblies for single cell testing in a methanol-fueled alkaline system. The highest power density achieved in this study was 54 mW/cm2 which was 90% of the project target and the highest reported power density for a direct methanol alkaline fuel cell.

Hibbs, Michael R.; Jenkins, Janelle E.; Alam, Todd Michael; Janarthanan, Rajeswari [Colorado School of Mines, Golden, CO; Horan, James L. [Colorado School of Mines, Golden, CO; Caire, Benjamin R. [Colorado School of Mines, Golden, CO; Ziegler, Zachary C. [Colorado School of Mines, Golden, CO; Herring, Andrew M. [Colorado School of Mines, Golden, CO; Yang, Yuan [Colorado School of Mines, Golden, CO; Zuo, Xiaobing [Argonne National Laboratory, Argonne, IL; Robson, Michael H. [University of New Mexico, Albuquerque, NM; Artyushkova, Kateryna [University of New Mexico, Albuquerque, NM; Patterson, Wendy [University of New Mexico, Albuquerque, NM; Atanassov, Plamen Borissov [University of New Mexico, Albuquerque, NM

2013-09-01T23:59:59.000Z

25

Alkali or alkaline earth metal promoted catalyst and a process for methanol synthesis using alkali or alkaline earth metals as promoters  

DOE Patents (OSTI)

The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a heterogeneous catalyst comprising reduced copper chromite impregnated with an alkali or alkaline earth metal. There is thus no need to add a separate alkali or alkaline earth compound. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100--160 C and the pressure range of 40--65 atm. The process produces methanol with up to 90% syngas conversion per pass and up to 95% methanol selectivity. The only major by-product is a small amount of easily separated methyl formate. Very small amounts of water, carbon dioxide and dimethyl ether are also produced. The present catalyst combination also is capable of tolerating fluctuations in the H[sub 2]/CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.

Tierney, J.W.; Wender, I.; Palekar, V.M.

1995-01-31T23:59:59.000Z

26

Application of artificial neural network to predict specific fuel consumption and exhaust temperature for a Diesel engine  

Science Journals Connector (OSTI)

The ability of an artificial neural network model, using a back propagation learning algorithm, to predict specific fuel consumption and exhaust temperature of a Diesel engine for various injection timings is studied. The proposed new model is compared with experimental results. The comparison showed that the consistence between experimental and the network results are achieved by a mean absolute relative error less than 2%. It is considered that a well-trained neural network model provides fast and consistent results, making it an easy-to-use tool in preliminary studies for such thermal engineering problems.

Adnan Parlak; Yasar Islamoglu; Halit Yasar; Aysun Egrisogut

2006-01-01T23:59:59.000Z

27

Aluminoborosilicate Waste Glass Dissolution under Alkaline Conditions...  

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

Aluminoborosilicate Waste Glass Dissolution under Alkaline Conditions at 40°C: Implications for a Chemical Affinity-Based Aluminoborosilicate Waste Glass Dissolution under...

28

Methanol synthesis using a catalyst combination of alkali or alkaline earth salts and reduced copper chromite  

DOE Patents (OSTI)

The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a catalyst combination comprising reduced copper chromite and basic alkali salts or alkaline earth salts. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100.degree.-160.degree. C. and the pressure range of 40-65 atm. The process produces methanol with up to 90% syngas conversion per pass and up to 95% methanol selectivity. The only major by-product is a small amount of easily separated methyl formate. Very small amounts of water, carbon dioxide and dimethyl ether are also produced. The present catalyst combination also is capable of tolerating fluctuations in the H.sub.2 /CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.

Tierney, John W. (Pittsburgh, PA); Wender, Irving (Pittsburgh, PA); Palekar, Vishwesh M. (Pittsburgh, PA)

1995-01-01T23:59:59.000Z

29

JOURNAL DE PHYSIQUE Colloque C4, supplment au n" 4, Tome 40, avril 1979, page C4-140 Low temperature specific heat of rocksalt thorium compounds  

E-Print Network (OSTI)

temperature specific heat of rocksalt thorium compounds V. Maurice, J. L. Boutard C) and D. Abbe ( n ) SESI with vacancy content in ThC,^x and is minimal for ThC06N04 compared to ThC and ThN. 1. Introduction. -- Thorium://dx.doi.org/10.1051/jphyscol:1979445 #12;LOW TEMPERATURE SPECIFIC HEAT OF ROCKSALT THORIUM COMPOUNDS C4-141 have

Boyer, Edmond

30

Combined low-temperature scanning tunneling/atomic force microscope for atomic resolution imaging and site-specific force spectroscopy  

SciTech Connect

The authors present the design and first results of a low-temperature, ultrahigh vacuum scanning probe microscope enabling atomic resolution imaging in both scanning tunneling microscopy (STM) and noncontact atomic force microscopy (NC-AFM) modes. A tuning-fork-based sensor provides flexibility in selecting probe tip materials, which can be either metallic or nonmetallic. When choosing a conducting tip and sample, simultaneous STM/NC-AFM data acquisition is possible. Noticeable characteristics that distinguish this setup from similar systems providing simultaneous STM/NC-AFM capabilities are its combination of relative compactness (on-top bath cryostat needs no pit), in situ exchange of tip and sample at low temperatures, short turnaround times, modest helium consumption, and unrestricted access from dedicated flanges. The latter permits not only the optical surveillance of the tip during approach but also the direct deposition of molecules or atoms on either tip or sample while they remain cold. Atomic corrugations as low as 1 pm could successfully be resolved. In addition, lateral drifts rates of below 15 pm/h allow long-term data acquisition series and the recording of site-specific spectroscopy maps. Results obtained on Cu(111) and graphite illustrate the microscope's performance.

Schwarz, Udo; Albers, Boris J.; Liebmann, Marcus; Schwendemann, Todd C.; Baykara, Mehmet Z.; Heyde, Markus; Salmeron, Miquel; Altman, Eric I.; Schwarz, Udo D.

2008-02-27T23:59:59.000Z

31

Photoluminescence Properties of Alkaline-Earth Oxide Nanoparticles...  

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

Properties of Alkaline-Earth Oxide Nanoparticles. Photoluminescence Properties of Alkaline-Earth Oxide Nanoparticles. Abstract: Previous experiments have demonstrated that...

32

Alkaline sorbent injection for mercury control  

DOE Patents (OSTI)

A mercury removal system for removing mercury from combustion flue gases is provided in which alkaline sorbents at generally extremely low stoichiometric molar ratios of alkaline earth or an alkali metal to sulfur of less than 1.0 are injected into a power plant system at one or more locations to remove at least between about 40% and 60% of the mercury content from combustion flue gases. Small amounts of alkaline sorbents are injected into the flue gas stream at a relatively low rate. A particulate filter is used to remove mercury-containing particles downstream of each injection point used in the power plant system.

Madden, Deborah A. (Boardman, OH); Holmes, Michael J. (Washington Township, Stark County, OH)

2003-01-01T23:59:59.000Z

33

Alkaline sorbent injection for mercury control  

DOE Patents (OSTI)

A mercury removal system for removing mercury from combustion flue gases is provided in which alkaline sorbents at generally extremely low stoichiometric molar ratios of alkaline earth or an alkali metal to sulfur of less than 1.0 are injected into a power plant system at one or more locations to remove at least between about 40% and 60% of the mercury content from combustion flue gases. Small amounts of alkaline sorbents are injected into the flue gas stream at a relatively low rate. A particulate filter is used to remove mercury-containing particles downstream of each injection point used in the power plant system.

Madden, Deborah A. (Boardman, OH); Holmes, Michael J. (Washington Township, Stark County, OH)

2002-01-01T23:59:59.000Z

34

Sediment resuspension effects on alkaline phosphatase activity  

Science Journals Connector (OSTI)

Sediment cores, including the associated lake water, were collected from a shallow hypereutrophic lake located in central Florida. Alkaline phosphatase activity (APA) was measured as an indicator of potential org...

S. Newman; K. R. Reddy

1992-10-07T23:59:59.000Z

35

Screening citrus rootstocks for alkalinity tolerance  

E-Print Network (OSTI)

SCREENING CITRUS ROOTSTOCKS FOR ALKALINITY TOLERANCE A Thesis by SUDAHONO Submitted to the Office of Graduate Studies of Texas ALM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1991 Major... Subject: Horticulture SCREENING CITRUS ROOTSTOCKS FOR ALKALINITY TOLERANCE A Thesis by SUDAHONO Approved as to style and content by: David H. yr (Chair of Com ttee) Robert E. Rouse (Member) ~. Err. tg~i ~PI. ~~ Frank M. Hone (Member) Calvin G...

Sudahono

2012-06-07T23:59:59.000Z

36

Alkaline earth filled nickel skutterudite antimonide thermoelectrics  

DOE Patents (OSTI)

A thermoelectric material including a body centered cubic filled skutterudite having the formula A.sub.xFe.sub.yNi.sub.zSb.sub.12, where A is an alkaline earth element, x is no more than approximately 1.0, and the sum of y and z is approximately equal to 4.0. The alkaline earth element includes guest atoms selected from the group consisting of Be, Mb, Ca, Sr, Ba, Ra and combinations thereof. The filled skutterudite is shown to have properties suitable for a wide variety of thermoelectric applications.

Singh, David Joseph

2013-07-16T23:59:59.000Z

37

Methanol synthesis using a catalyst combination of alkali or alkaline earth salts and reduced copper chromite for methanol synthesis  

DOE Patents (OSTI)

The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a catalyst combination comprising reduced copper chromite and basic alkali salts or alkaline earth salts. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100.degree.-160.degree. C. and the pressure range of 40-65 atm. The process produces methanol with up to 90% syngas conversion per pass and up to 95% methanol selectivity. The only major by-product is a small amount of easily separated methyl formate. Very small amounts of water, carbon dioxide and dimethyl ether are also produced. The present catalyst combination also is capable of tolerating fluctuations in the H.sub.2 /CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.

Tierney, John W. (Pittsburgh, PA); Wender, Irving (Pittsburgh, PA); Palekar, Vishwesh M. (Pittsburgh, PA)

1993-01-01T23:59:59.000Z

38

Study of the dependence of the specific output power of a copper chloride laser on the radial temperature profile of a gas plasma  

SciTech Connect

The design of a copper chloride laser is described, and the laser is optimised by studying the dependence of its output power on the buffer gas type. The voltage and current of the laser discharge at the optimum buffer gas pressure are measured. The influence of the diaphragm diameter on the specific output power is studied after optimisation of switch parameters. When an diaphragm producing the optimal temperature gradient in the laser gas-discharge tube, the record specific output power of 123 W L{sup -1} is obtained without any admixtures. (lasers)

Sadighi-Bonabi, R; Mohammadpour, R; Tavakoli, M [Physics Department, Sharif University of Technology, Tehran (Iran, Islamic Republic of); Soltanmoradi, F [Bonab Research Center, Bonab, Azerbaijan province (Iran, Islamic Republic of); Zand, M [Laser Research Center, Tehran (Iran, Islamic Republic of)

2007-04-30T23:59:59.000Z

39

Fallout Plutonium in an Alkaline, Saline Lake  

Science Journals Connector (OSTI)

...Mono Lake, a natural closed-basin (3) alkaline, saline lake...3 pCi/m3), and New York Bight (-0.7 pCi/m3) are much...volcanic debris that fills the basin to a depth of 1000 m. Mono...Water is lost from a closed basin lake only by evaporation and...

H. J. SIMPSON; R. M. TRIER; C. R. OLSEN; D. E. HAMMOND; A. EGE; L. MILLER; J. M. MELACK

1980-03-07T23:59:59.000Z

40

Negative Electrode For An Alkaline Cell  

DOE Patents (OSTI)

The present invention concerns a negative electrode for an alkaline cell, comprising a current collector supporting a paste containing an electrochemically active material and a binder, characterized in that said binder is a polymer containing hydrophilic and hydrophobic groups, said polymer being selected from an acrylic homopolymer, copolymer and terpolymer, an unsaturated organic acid copolymer and an unsaturated acid anhydride copolymer.

Coco, Isabelle (Talence Cedex, FR); Cocciantelli, Jean-Michel (Bordeaux, FR); Villenave, Jean-Jacques (Talence Cedex, FR)

1998-07-14T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Sporulation-specific translational discrimination in Bacillus subtilis  

Science Journals Connector (OSTI)

The Bacillus subtilis 30 S ribosomal subunit has been probed for sporulationspecific functions. A single site mutant with a streptomycin-resistant 30 S ribsomal subunit has been isolated; this mutation resulted in temperature-sensitive sporulation. The temperature-sensitive mutation was expressed throughout most of the sporulation sequence. Mutant cells grown at the non-permissive temperature failed to accumulate proteolytic activity, antibiotic activity, or alkaline phosphatase activity, and hence were blocked at or near stage 0 in the sporulation sequence. Pulse labeled protein synthesis profiles were deranged during postexponential growth phase in mutant cells incubated at the non-permissive temperature. These results suggest the possibility of sporulation-specific translational control.

T. Leighton

1974-01-01T23:59:59.000Z

42

E-Print Network 3.0 - alkaline-earth metal ions Sample Search...  

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

. Noble metals 12;18 C.3. Alkaline earth metalsC.3. Alkaline earth metals 12;19 Elements: Ca, Sr, Ba (Be... . Alkaline earth metalsC.3. Alkaline ... Source: del Barco,...

43

Yegorovite, Na4[Si4O8(OH)4]·7H2O, a new mineral from the Lovozero alkaline pluton, Kola Peninsula  

Science Journals Connector (OSTI)

A new mineral, yegorovite, has been identified in the late hydrothermal, low-temperature assemblage of the Palitra hyperalkaline pegmatite at Mt. Kedykverpakhk, Lovozero alkaline pluton, Kola Peninsula, Russia...

I. V. Pekov; N. V. Zubkova; N. V. Chukanov; A. E. Zadov…

2010-12-01T23:59:59.000Z

44

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

45

The analysis and specification of large high-pressure, high-temperature valves for combustion turbine protection in second-generation PFB power plants: Topical report  

SciTech Connect

The purpose of this study was to provide a specification for the high-pressure/high-temperature valves for turbine overspeed protection in a commercial-scale second-generation pressurized fluidized bed combustion (PFBC) power plant. In the event of a loss of external (generator) load, the gas turbine rapidly accelerates from its normal operating speed. Protection from excessive overspeed can be maintained by actuation of fuel isolation and air bypass valves. A design specification for these valves was developed by analyses of the turbine/compressor interaction during a loss of load and analyses of pressure and flow transients during operation of the overspeed protection valves. The basis for these analyses was the Phase 1 plant conceptual design prepared in 1987.

Not Available

1994-08-01T23:59:59.000Z

46

Quantum computing with alkaline earth atoms  

E-Print Network (OSTI)

We present a complete scheme for quantum information processing using the unique features of alkaline earth atoms. We show how two completely independent lattices can be formed for the $^1$S$_0$ and $^3$P$_0$ states, with one used as a storage lattice for qubits encoded on the nuclear spin, and the other as a transport lattice to move qubits and perform gate operations. We discuss how the $^3$P$_2$ level can be used for addressing of individual qubits, and how collisional losses from metastable states can be used to perform gates via a lossy blockade mechanism.

Andrew J. Daley; Martin M. Boyd; Jun Ye; Peter Zoller

2008-08-14T23:59:59.000Z

47

Alkaline chemistry of transuranium elements and technetium and the treatment of alkaline radioactive wastes  

SciTech Connect

Goal of this survey is to generalize the known data on fundamental physical-chemical properties of TRUs and Tc, methods for their isolation, and to provide recommendations that will be useful for partitioning them from alkaline high-level wastes.

Delegard, C.H. [Westinghouse Hanford Co., Richland, WA (United States); Peretrukhin, V.F.; Shilov, V.P.; Pikaev, A.K. [Russian Academy of Sciences (Russian Federation). Inst. of Physical Chemistry

1995-05-01T23:59:59.000Z

48

DNA DAMAGE QUANTITATION BY ALKALINE GEL ELECTROPHORESIS.  

SciTech Connect

Physical and chemical agents in the environment, those used in clinical applications, or encountered during recreational exposures to sunlight, induce damages in DNA. Understanding the biological impact of these agents requires quantitation of the levels of such damages in laboratory test systems as well as in field or clinical samples. Alkaline gel electrophoresis provides a sensitive (down to {approx} a few lesions/5Mb), rapid method of direct quantitation of a wide variety of DNA damages in nanogram quantities of non-radioactive DNAs from laboratory, field, or clinical specimens, including higher plants and animals. This method stems from velocity sedimentation studies of DNA populations, and from the simple methods of agarose gel electrophoresis. Our laboratories have developed quantitative agarose gel methods, analytical descriptions of DNA migration during electrophoresis on agarose gels (1-6), and electronic imaging for accurate determinations of DNA mass (7-9). Although all these components improve sensitivity and throughput of large numbers of samples (7,8,10), a simple version using only standard molecular biology equipment allows routine analysis of DNA damages at moderate frequencies. We present here a description of the methods, as well as a brief description of the underlying principles, required for a simplified approach to quantitation of DNA damages by alkaline gel electrophoresis.

SUTHERLAND,B.M.; BENNETT,P.V.; SUTHERLAND, J.C.

2004-03-24T23:59:59.000Z

49

Sonoelectrochemical production of hydrogen via alkaline water electrolysis.  

E-Print Network (OSTI)

??Alkaline water electrolysis is a promising technology to produce clean and pure hydrogen. This technology coupled with the ultrasound results in an enhanced rate of… (more)

Hassan Zadeh, Salman

2014-01-01T23:59:59.000Z

50

The Composite Zirfon® Separator for Alkaline Water Electrolysis  

Science Journals Connector (OSTI)

During the last few years, VITO has been developing a new type of microporous composite separator material for use in alkaline water electrolysis [1, 2].

Ph. Vermeiren; W. Adriansens; J. P. Moreels…

1998-01-01T23:59:59.000Z

51

Alkaline Membrane Fuel Cell Workshop Welcome and OverviewInnovation  

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

Alkaline Membrane Fuel Cell Workshop Welcome and Overview Innovation for Our Energy Future Bryan Pivovar National Renewable Energy Laboratory AMFC Workshop May 8, 2011 Innovation...

52

DEVELOPMENT AND SELECTION OF IONIC LIQUID ELECTROLYTES FOR HYDROXIDE CONDUCTING POLYBENZIMIDAZOLE MEMBRANES IN ALKALINE FUEL CELLS  

SciTech Connect

Alkaline fuel cell (AFC) operation is currently limited to specialty applications such as low temperatures and pure H{sub 2}/O{sub 2} due to the corrosive nature of the electrolyte and formation of carbonates. AFCs are the cheapest and potentially most efficient (approaching 70%) fuel cells. The fact that non-Pt catalysts can be used, makes them an ideal low cost alternative for power production. The anode and cathode are separated by and solid electrolyte or alkaline porous media saturated with KOH. However, CO{sub 2} from the atmosphere or fuel feed severely poisons the electrolyte by forming insoluble carbonates. The corrosivity of KOH (electrolyte) limits operating temperatures to no more than 80?C. This chapter examines the development of ionic liquids electrolytes that are less corrosive, have higher operating temperatures, do not chemically bond to CO{sub 2}, and enable alternative fuels. Work is detailed on the IL selection and characterization as well as casting methods within the polybenzimidazole based solid membrane. This approach is novel as it targets the root of the problem (the electrolyte) unlike other current work in alkaline fuel cells which focus on making the fuel cell components more durable.

Fox, E.

2012-05-01T23:59:59.000Z

53

Thermodynamics of an Aqueous-Alkaline/Carbonate Carbon Fuel Cell  

Science Journals Connector (OSTI)

In view of the fact that aqueous-alkaline hydrogen fuel cells have been used to power an Austin car and a commercial Black Cab in London, these recent results suggest the potential use of aqueous-alkaline carbon fuel cells for vehicular transportation. ... Thus, biocarbons can be a sustainable, environmentally friendly fuel for carbon fuel cell applications, whose production complements the production of bioethanol and biodiesel fuels in a biomass refinery. ... Our interest in the aqueous-alkaline biocarbon fuel cell is stimulated by the fact that aqueous-alkaline hydrogen fuel cells have been used to power an Austin car and a commercial London Black Cab.29-31 Thus, the development of a functional aqueous-alkaline carbon fuel cell could facilitate the replacement of non-renewable, liquid hydrocarbon transportation fuels by renewable, solid biocarbons. ...

Michael Jerry Antal, Jr.; Gérard C. Nihous

2008-02-28T23:59:59.000Z

54

MODELING AN ION EXCHANGE PROCESS FOR CESIUM REMOVAL FROM ALKALINE RADIOACTIVE WASTE SOLUTIONS  

SciTech Connect

The performance of spherical Resorcinol-Formaldehyde ion-exchange resin for the removal of cesium from alkaline radioactive waste solutions has been investigated through computer modeling. Cesium adsorption isotherms were obtained by fitting experimental data using a thermodynamic framework. Results show that ion-exchange is an efficient method for cesium removal from highly alkaline radioactive waste solutions. On average, two 1300 liter columns operating in series are able to treat 690,000 liters of waste with an initial cesium concentration of 0.09 mM in 11 days achieving a decontamination factor of over 50,000. The study also tested the sensitivity of ion-exchange column performance to variations in flow rate, temperature and column dimensions. Modeling results can be used to optimize design of the ion exchange system.

Smith, F; Luther Hamm, L; Sebastian Aleman, S; Johnston Michael, J

2008-08-26T23:59:59.000Z

55

Calixarene crown ether solvent composition and use thereof for extraction of cesium from alkaline waste solutions  

DOE Patents (OSTI)

A solvent composition and corresponding method for extracting cesium (Cs) from aqueous neutral and alkaline solutions containing Cs and perhaps other competing metal ions is described. The method entails contacting an aqueous Cs-containing solution with a solvent consisting of a specific class of lipophilic calix[4]arene-crown ether extractants dissolved in a hydrocarbon-based diluent containing a specific class of alkyl-aromatic ether alcohols as modifiers. The cesium values are subsequently recovered from the extractant, and the solvent subsequently recycled, by contacting the Cs-containing organic solution with an aqueous stripping solution. This combined extraction and stripping method is especially useful as a process for removal of the radionuclide cesium-137 from highly alkaline waste solutions which are also very concentrated in sodium and potassium. No pre-treatment of the waste solution is necessary, and the cesium can be recovered using a safe and inexpensive stripping process using water, dilute (millimolar) acid solutions, or dilute (millimolar) salt solutions. An important application for this invention would be treatment of alkaline nuclear tank wastes. Alternatively, the invention could be applied to decontamination of acidic reprocessing wastes containing cesium-137.

Moyer, Bruce A. (Oak Ridge, TN); Sachleben, Richard A. (Knoxville, TN); Bonnesen, Peter V. (Knoxville, TN); Presley, Derek J. (Ooltewah, TN)

2001-01-01T23:59:59.000Z

56

E-Print Network 3.0 - alkaline texturing baths Sample Search...  

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

3.5. Precision The precision of the three alkaline peroxodisulfate... waters by oxidation with alkaline potassium peroxodisulfate and low pressure microwave digestion... ,...

57

E-Print Network 3.0 - alkaline massif kola Sample Search Results  

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

Summary: ultramafic-alkaline complex in the Kola Alkaline Prov- ince, northwestern Russia. This work continues... supports a close affinity between CAPR and carbonatitic rocks...

58

E-Print Network 3.0 - alkaline pluton kola Sample Search Results  

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

Summary: ultramafic-alkaline complex in the Kola Alkaline Prov- ince, northwestern Russia. This work continues... supports a close affinity between CAPR and carbonatitic rocks...

59

E-Print Network 3.0 - alkaline earth chlorides Sample Search...  

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

Summary: of the alkaline earth cations, magnesium, calcium, and barium on the dissolution kinetics of quartz PATRICIAM... and alkaline earth cations in near-neutralpH solutions. We...

60

E-Print Network 3.0 - alkaline-earth metal cations Sample Search...  

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

K. (2002): A novel group of alkaline earth metal amides: synthesis... ): Not just heavy "Grignards": Recent advances in the organometallic chemistry of the alkaline earth...

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

E-Print Network 3.0 - alkaline earth cations Sample Search Results  

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

the cation (alkaline, rare earth... to the cation size. Knowing that the size of rare earth elements and alkaline cations decreases in the following... of results on tungstate...

62

E-Print Network 3.0 - alkaline earth lithium Sample Search Results  

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

the cation (alkaline, rare earth... to the cation size. Knowing that the size of rare earth elements and alkaline cations decreases in the following... of results on tungstate...

63

E-Print Network 3.0 - alkaline fluids released Sample Search...  

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

Fossil Fuels 6 Geothermal fluxes of alkalinity in the Narayani river system of central Nepal Summary: alkalinity. HCO3 is normally the dominant anion. Sr isotope ratios from...

64

E-Print Network 3.0 - alkaline hydrothermal reaction Sample Search...  

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

Engineering 13 Geothermal fluxes of alkalinity in the Narayani river system of central Nepal Summary: alkalinity. HCO3 is normally the dominant anion. Sr isotope ratios from...

65

E-Print Network 3.0 - alkaline intermediate level Sample Search...  

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

Energy 24 Geothermal fluxes of alkalinity in the Narayani river system of central Nepal Summary: Geothermal fluxes of alkalinity in the Narayani river system of central Nepal...

66

Process for treating alkaline wastes for vitrification  

DOE Patents (OSTI)

According to its major aspects and broadly stated, the present invention is a process for treating alkaline waste materials, including high level radioactive wastes, for vitrification. The process involves adjusting the pH of the wastes with nitric acid, adding formic acid (or a process stream containing formic acid) to reduce mercury compounds to elemental mercury and MnO{sub 2} to the Mn(II) ion, and mixing with class formers to produce a melter feed. The process minimizes production of hydrogen due to noble metal-catalyzed formic acid decomposition during, treatment, while producing a redox-balanced feed for effective melter operation and a quality glass product. An important feature of the present invention is the use of different acidifying and reducing, agents to treat the wastes. The nitric acid acidifies the wastes to improve yield stress and supplies acid for various reactions; then the formic acid reduces mercury compounds to elemental mercury and MnO{sub 2}) to the Mn(II) ion. When the pH of the waste is lower, reduction of mercury compounds and MnO{sub 2}) is faster and less formic acid is needed, and the production of hydrogen caused by catalytically-active noble metals is decreased.

Hsu, Chia-lin W.

1994-01-01T23:59:59.000Z

67

Process for treating alkaline wastes for vitrification  

DOE Patents (OSTI)

A process for treating alkaline wastes for vitrification. The process involves acidifying the wastes with an oxidizing agent such as nitric acid, then adding formic acid as a reducing agent, and then mixing with glass formers to produce a melter feed. The nitric acid contributes nitrates that act as an oxidant to balance the redox of the melter feed, prevent reduction of certain species to produce conducting metals, and lower the pH of the wastes to a suitable level for melter operation. The formic acid reduces mercury compounds to elemental mercury for removal by steam stripping, and MnO.sub.2 to the Mn(II) ion to prevent foaming of the glass melt. The optimum amounts of nitric acid and formic acid are determined in relation to the composition of the wastes, including the concentrations of mercury (II) and MnO.sub.2, noble metal compounds, nitrates, formates and so forth. The process minimizes the amount of hydrogen generated during treatment, while producing a redox-balanced feed for effective melter operation and a quality glass product.

Hsu, Chia-lin W. (Augusta, GA)

1995-01-01T23:59:59.000Z

68

Process for treating alkaline wastes for vitrification  

DOE Patents (OSTI)

A process is described for treating alkaline wastes for vitrification. The process involves acidifying the wastes with an oxidizing agent such as nitric acid, then adding formic acid as a reducing agent, and then mixing with glass formers to produce a melter feed. The nitric acid contributes nitrates that act as an oxidant to balance the redox of the melter feed, prevent reduction of certain species to produce conducting metals, and lower the pH of the wastes to a suitable level for melter operation. The formic acid reduces mercury compounds to elemental mercury for removal by steam stripping, and MnO{sub 2} to the Mn(II) ion to prevent foaming of the glass melt. The optimum amounts of nitric acid and formic acid are determined in relation to the composition of the wastes, including the concentrations of mercury (II) and MnO{sub 2}, noble metal compounds, nitrates, formates and so forth. The process minimizes the amount of hydrogen generated during treatment, while producing a redox-balanced feed for effective melter operation and a quality glass product. 4 figs.

Hsu, C.L.W.

1995-07-25T23:59:59.000Z

69

Seeking effective dyes for a mediated glucose–air alkaline battery/fuel cell  

Science Journals Connector (OSTI)

Abstract A significant level of power generation from an abiotic, air breathing, mediated reducing sugar–air alkaline battery/fuel cell has been achieved in our laboratories at room temperature without complicated catalysis or membrane separation in the reaction chamber. Our prior studies suggested that mass transport limitation by the mediator is a limiting factor in power generation. New and effective mediators were sought here to improve charge transfer and power density. Forty-five redox dyes were studied to identify if any can facilitate mass transport in alkaline electrolyte solution; namely, by increasing the solubility and mobility of the dye, and the valence charge carried per molecule. Indigo dyes were studied more closely to understand the complexity involved in mass transport. The viability of water-miscible co-solvents was also explored to understand their effect on solubility and mass transport of the dyes. Using a 2.0 mL solution, 20% methanol by volume, with 100 mM indigo carmine, 1.0 M glucose and 2.5 M sodium hydroxide, the glucose–air alkaline battery/fuel cell attained 8 mA cm–2 at short-circuit and 800 ?W cm–2 at the maximum power point. This work shall aid future optimization of mediated charge transfer mechanism in batteries or fuel cells.

Ross Eustis; Tsz Ming Tsang; Brigham Yang; Daniel Scott; Bor Yann Liaw

2014-01-01T23:59:59.000Z

70

Alkaline Membrane Fuel Cell Workshop Welcome and OverviewInnovation  

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

Alkaline Membrane Fuel Cell Workshop Alkaline Membrane Fuel Cell Workshop Welcome and Overview Innovation for Our Energy Future Bryan Pivovar National Renewable Energy Laboratory AMFC Workshop May 8, 2011 Innovation for Our Energy Future 2 Welcome - Your participation is appreciated - Date of Workshop Innovation for Our Energy Future 3 Meeting Location Innovation for Our Energy Future Workshop Agenda SUNDAY, MAY 8, 2011 1:00 pm - 1:15 pm Welcome and Opening Remarks (Salon H) 1:15 pm - 1:45 pm Workshop Overview: Dr. Bryan Pivovar, NREL (Salon H) 1:45 pm - 2:15 pm Alkaline Membrane Research Overview: Prof. Andy Herring, Colorado School of Mines (Salon H) 2:15 pm - 2:45 pm Alkaline Electrocatalysis Research Overview: Prof. Sanjeev Mukerjee, Northeastern University (Salon H) 2:45 pm - 3:15 pm AMFCs: Tokuyama Perspective:

71

Functionality of alkaline cooked corn bran on tortilla texture  

E-Print Network (OSTI)

and flexible. A sensory panel found that tortillas containing nixtamalized cereal brans had a strong alkaline flavor and aroma and a blistered surface, with a soft, moist texture. NCB tortillas had the highest overall acceptability scores. Pericarp from...

Guajardo Flores, Sara

2012-06-07T23:59:59.000Z

72

Enhanced Oil Recovery Using the Alkaline-Surfactant-Polymer (ASP)  

E-Print Network (OSTI)

Alkaline Surfactant Polymer (ASP) process is a tertiary method of oil recovery that has promising results for future development. It has already been implemented in different areas of the United States such as Wyoming, west Texas, also in Canada...

Musharova, Darya

2010-07-14T23:59:59.000Z

73

Investigation on application of homogeneous and heterogeneous catalysis for alkaline waste treatment  

SciTech Connect

The stabilization of neptunium(IV) in alkaline solution by chemical reductants under various conditions was studied. Testing showed that neptunium(V) is slowly reduced to Np(IV) by V(IV) at room temperature in alkaline solutions. Increasing temperature accelerates reduction. Complete reduction of 2 x 10{sup -4} M Np(V) occurs in three hours at 80{degrees}C in 1 M NaOH with 0.02 M VOSO{sub 4-}. Under similar conditions, but in 5 M NaOH, only 15 to 20% of the Np(V) was reduced in 5 hours. In all cases, about 98 % of the initial neptunium was found in the precipitate. Thus V(IV) acts both as a reductant and as a precipitation carrier. Tests showed Np(V) reduction by hydrazine hydrate could be catalyzed by Pd(II). Reduction increased with temperature and catalyst concentration and decreased with hydroxide concentration. Reduction of Np(V) also takes place in 1 M NaOH solutions containing 1 M sodium formate and palladium. Increasing temperature accelerates reduction; with three hours` treatment in 5 M NaOH solution at 90{degrees}C, about 95 % of the initial 2 x 10{sup -4} M neptunium(V) is transformed to Np(IV). Organic complexants and organic acid anions hinder the decontamination of alkaline solutions from neptunium and plutonium by coprecipitation with d-element hydroxides (the Method of Appearing Reagents). It was found that ethylenediaminetetraacetate (EDTA) and N-(2-hydroxyethyl) ethylenediaminetriacetate (HEDTA) are decomposed by H{sub 2}O{sub 2} in alkaline solution in the presence of cobalt compounds with heating and by Na2S208 at moderate temperatures. Citrate, glycolate, and oxalate are decomposed by Na{sub 2}S{sub 2}O{sub 8} with heating. Oxidant amounts must be increased when NaNO{sub 2} also is present in solution. 8 refs., 25 figs., 16 tabs.

Shilov, V.P.; Bessonov, A.A.; Garnov, A.Y.; Gelis, A.V. [Russian Academy of Sciences, Moscow (Russian Federation). Institute of Physical Chemistry] [and others

1997-09-01T23:59:59.000Z

74

E-Print Network 3.0 - alkaline nuclear waste Sample Search Results  

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

waste Search Powered by Explorit Topic List Advanced Search Sample search results for: alkaline nuclear waste...

75

A Thin Porous Polyantimonic Acid Based Membrane as a Separator in Alkaline Water Electrolysis  

Science Journals Connector (OSTI)

Polyantimonic acid based membranes have been evaluated as a separator in alkaline water electrolysis.

R. Leysen; W. Doyen; R. Proost; H. Vandenborre

1986-01-01T23:59:59.000Z

76

A model for the anodic dissolution of zinc in alkaline electrolyte  

SciTech Connect

The authors propose a three-step mechanism to describe the kinetics of the initial dissolution of zinc in alkaline electrolyte. The rate-determining step is postulated to be a reversible reaction where a monovalent zine hydroxide is converted to a soluble zincate. The surface reactions are assumed to occur on activated sites, where Langmuir adsorption is assumed. The reaction scheme is shown to be consistent with experimental quantities such as Tafel slope and reaction order for data obtained near room temperature in approximately 1N hydroxide electrolyte. The thermodynamic consistency of each elementary step is demonstrated from an analysis of available free energy data.

Chang, Y.C.; Prentice, G.

1984-07-01T23:59:59.000Z

77

Oxygen Reduction Catalyzed by Au–TiO2 Nanocomposites in Alkaline Media  

Science Journals Connector (OSTI)

Au?TiO2 nanocomposite; oxygen reduction; alkaline media; RRDE; Tafel plot ... In another study, Kim et al.(14) prepared titanium oxide by heat treatment of titanium sheets in the temperature range of 600–1000 °C, and the best catalysts were identified as those prepared at 900 °C where ORR occurred at the potential of about +0.65 V versus RHE in 0.1 M H2SO4. ... In a typical measurement, 1 mg of the Au–TiO2 nanocomposite catalysts, 4 mg of carbon powder, and 10 ?L of Nafion were ultrasonically mixed in 1 mL of methanol. ...

Chan Lin; Yang Song; Lixin Cao; Shaowei Chen

2013-11-11T23:59:59.000Z

78

Alkaline Leaching of Key, Non-Radioactive Components from Simulants and Hanford Tank Sludge 241-S-110: Results of FY01 Studies  

SciTech Connect

This study addressed three aspects in selected alkaline leaching: first, the use of oxidants persulfate, permanganate, and ferrate as selective chromium-leaching agents from washed Hanford Tank S-110 solids under varying conditions of hydroxide concentration, temperature, and time was investigated. Second, the selective dissolution of solids containing mercury(II) oxide under alkaline conditions was examined. Various compounds were studied for their effectiveness in dissolving mercury under varying conditions of time, temperature, and hydroxide concentration in the leachate. Three compounds were studied: cysteine, iodide, and diethyldithiophosphoric acid (DEDTPA). Finally, the possibility of whether an oxidant bound to an anion-exchange resin can be used to effectively oxidize chromium(III) in alkaline solutions was addressed. The experimental results remain ambiguous to date; further work is required to reach any definitive conclusions as to the effectiveness of this approach.

Rapko, Brian M.; Vienna, John D.; Sinkov, Serguei I.; Kim, Jinseong; Cisar, Alan J.

2002-09-10T23:59:59.000Z

79

Actinide-Aluminate Speciation in Alkaline Radioactive Waste  

SciTech Connect

Investigation of behavior of actinides in alkaline media containing AL(III) showed that no aluminate complexes of actinides in oxidation states (IIII-VIII) were formed in alkaline solutions. At alkaline precipitation IPH (10-14) of actinides in presence of AL(III) formation of aluminate compounds is not observed. However, in precipitates contained actinides (IIV)<(VI), and to a lesser degree actinides (III), some interference of components takes place that is reflected in change of solid phase properties in comparison with pure components or their mechanical mixture. The interference decreases with rise of precipitation PH and at PH 14 is exhibited very feebly. In the case of NP(VII) the individual compound with AL(III) is obtained, however it is not aluminate of neptunium(VII), but neptunate of aluminium(III) similar to neptunates of other metals obtained earlier.

Dr. David L. Clark; Dr. Alexander M. Fedosseev

2001-12-21T23:59:59.000Z

80

Alkaline solution absorption of carbon dioxide method and apparatus  

DOE Patents (OSTI)

Disclosed is a method for measuring the concentration of hydroxides (or pH) in alkaline solutions, using the tendency of hydroxides to adsorb CO{sub 2}. The method comprises passing CO{sub 2} over the surface of an alkaline solution in a remote tank before and after measurements of the CO{sub 2} concentration. Comparison of the measurements yields the adsorption fraction from which the hydroxide concentration can be calculated using a correlation of hydroxide or pH to adsorption fraction. A schematic is given of a process system according to a preferred embodiment of the invention. 2 figs.

Hobbs, D.T.

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Low-to-moderate temperature geothermal resource assessment for Nevada: Area specific studies, final report for the period June 1, 1980-August 30, 1981  

SciTech Connect

The Hawthorne study area is located in Mineral County, Nevada and surrounds the municipality of the same name. It encompasses an area of approximately 310 sq. km (120 sq. mi), and most of the land belongs to the US Army Ammunition Plant. The energy needs of the military combined with those of the area population (over 5,000 residents) are substantial. The area is classified as having a high potential for direct applications using the evaluation scheme described in Trexler and others (1979). A variety of scientific techniques was employed during area-wide resource assessment. General geologic studies demonstrate the lithologic diversity in the area; these studies also indicate possible sources for dissolved fluid constituents. Geophysical investigations include aeromagnetic and gravity surveys which aid in defining the nature of regional, and to a lesser extent, local variations in subsurface configurations. Surface and near-surface structural features are determined using various types of photo imagery including low sun-angle photography. An extensive shallow depth temperature probe survey indicates two zones of elevated temperature on opposite sides of the Walker Lake basin. Temperature-depth profiles from several wells in the study area indicate significant thermal fluid-bearing aquifers. Fluid chemical studies suggest a wide spatial distribution for the resource, and also suggest a meteoric recharge source in the Wassuk Range. Finally, a soil-mercury survey was not a useful technique in this study area. Two test holes were drilled to conclude the area resource assessment, and thermal fluids were encountered in both wells. The western well has measured temperatures as high as 90 C (194 F) within 150 meters (500 ft) of the surface. Temperature profiles in this well indicate a negative temperature gradient below 180 meters (590 ft). The eastern hole had a bottom hole temperature of 61 C (142 F) at a depth of only 120 meters (395 ft). A positive gradient is observed to a total depth in the well.

Trexler, Dennis T.; Koeing, Brian A.; Flynn, Thomas; Bruce, James L.; Ghusn, George Jr.

1981-08-30T23:59:59.000Z

82

Electrooxidation of adsorbed CO on Pt(1 1 1) and Pt(1 1 1)/Ru in alkaline media and comparison with results from acidic media  

E-Print Network (OSTI)

substantially reduce the CO poisoning that has so far limited low temperature fuel cell electrocatalyst performance, thus contributing to the development of more efficient direct oxidation fuel cells. Ã? 2004 in the oxidation of adsorbed CO at lower potentials. Cathode kinetics are also improved in alkaline media [3

Kenis, Paul J. A.

83

Laboratory study on the behaviour of spent AA household alkaline batteries in incineration  

SciTech Connect

The quantitative evaluation of emissions from incineration is essential when Life Cycle Assessment (LCA) studies consider this process as an end-of-life solution for some wastes. Thus, the objective of this work is to quantify the main gaseous emissions produced when spent AA alkaline batteries are incinerated. With this aim, batteries were kept for 1 h at 1273 K in a refractory steel tube hold in a horizontal electric furnace with temperature control. At one end of the refractory steel tube, a constant air flow input assures the presence of oxygen in the atmosphere and guides the gaseous emissions to a filter system followed by a set of two bubbler flasks having an aqueous solution of 10% (v/v) nitric acid. After each set of experiments, sulphur, chlorides and metals (As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Sb, Tl and Zn) were analyzed in both the solutions obtained from the steel tube washing and from the bubblers. Sulphur, chlorides and metals were quantified, respectively, using barium sulfate gravimetry, the Volhard method and atomic absorption spectrometry (AAS). The emissions of zinc, the most emitted metal, represent about 6.5% of the zinc content in the batteries. Emissions of manganese (whose oxide is the main component of the cathode) and iron (from the cathode collector) are negligible when compared with their amount in AA alkaline batteries. Mercury is the metal with higher volatility in the composition of the batteries and was collected even in the second bubbler flask. The amount of chlorides collected corresponds to about 36% of the chlorine in the battery sleeve that is made from PVC. A considerable part of the HCl formed in PVC plastic sleeve incineration is neutralized with KOH, zinc and manganese oxides and, thus, it is not totally released in the gas. Some of the emissions are predictable through a thermodynamic data analysis at temperatures in the range of 1200-1300 K taking into account the composition of the batteries. This analysis was done for most of potential reactions between components in the batteries as well as between them and the surrounding atmosphere and it reasonably agrees the experimental results. The results obtained show the role of alkaline batteries at the acid gases cleaning process, through the neutralization reactions of some of their components. Therefore, LCA of spent AA alkaline batteries at the municipal solid waste (MSW) incineration process must consider this contribution.

Almeida, Manuel F. [LEPAE, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal)], E-mail: mfa@fe.up.pt; Xara, Susana M.; Delgado, Julanda; Costa, Carlos A. [LEPAE, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal)

2009-01-15T23:59:59.000Z

84

Early containment of high-alkaline solution simulating low-level radioactive waste stream in clay-bearing blended cement  

SciTech Connect

Portland cement blended with fly ash and attapulgite clay was mixed with high-alkaline solution simulating low-level radioactive waste stream at a one-to-one weight ratio. Mixtures were adiabatically and isothermally cured at various temperatures and analyzed for phase composition, total alkalinity, pore solution chemistry, and transport properties as measured by impedance spectroscopy. Total alkalinity is characterized by two main drops. The early one corresponds to a rapid removal of phosphorous, aluminum, sodium, and to a lesser extent potassium solution. The second drop from about 10 h to 3 days is mainly associated with the removal of aluminum, silicon, and sodium. Thereafter, the total alkalinity continues descending, but at a lower rate. All pastes display a rapid flow loss that is attributed to an early precipitation of hydrated products. Hemicarbonate appears as early as one hour after mixing and is probably followed by apatite precipitation. However, the former is unstable and decomposes at a rate that is inversely related to the curing temperature. At high temperatures, zeolite appears at about 10 h after mixing. At 30 days, the stabilized crystalline composition Includes zeolite, apatite and other minor amounts of CaCO{sub 3}, quartz, and monosulfate Impedance spectra conform with the chemical and mineralogical data. The normalized conductivity of the pastes shows an early drop, which is followed by a main decrease from about 12 h to three days. At three days, the permeability of the cement-based waste as calculated by Katz-Thompson equation is over three orders of magnitude lower than that of ordinary portland cement paste. However, a further decrease in the calculated permeability is questionable. Chemical stabilization is favorable through incorporation of waste species into apatite and zeolite.

Kruger, A.A. [Westinghouse Hanford Co., Richland, WA (United States); Olson, R.A.; Tennis, P.D. [Northwestern Univ., Evanston, IL (United States). Center for Advanced Cement-Based Materials] [and others

1995-04-01T23:59:59.000Z

85

Pyrolysis of lignin for phenols with alkaline additive  

Science Journals Connector (OSTI)

Abstract This study is devoted to investigating the effect of alkaline additives on lignin pyrolysis for producing phenols. The effects of different types and amounts of alkaline additives, i.e., 0–20 wt.% NaOH, KOH, Na2CO3 or K2CO3, on lignin pyrolysis were tested in a fixed bed reactor. The chemicals in the pyrolysis liquid from a commercial alkali lignin with and without alkaline additive were mainly phenols including 2-methoxy-phenol, 2,6-dimethoxy-phenol, alkyl-phenols (free of methoxyl group) and 2-methoxy-4-alkyl-phenols. More vanillin and dimethoxy-benzene appeared in the pyrolysis liquid of alkali lignin and lignin purified from black liquor, respectively. While carbonate additives facilitated the production of methxoy-phenols, more alkyl-phenols were formed with the hydroxide additives. Analysis showed that all the alkaline additives promoted the reactions of decarboxylation or decarbonylation and the removal of unsaturated alkyl branch chains. The strong alkalescence of NaOH and KOH facilitated more deoxygenation of methoxyl groups so that there were more phenols free of methoxyl groups. The pyrolysis of PL resulted in the liquid yields of up to 30 wt.% (dry base), and the content of phenols was above 80% in the liquid.

Cuina Peng; Guangyi Zhang; Junrong Yue; Guangwen Xu

2014-01-01T23:59:59.000Z

86

2011 Alkaline Membrane Fuel Cell Workshop Final Report  

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

Report from the Alkaline Membrane Fuel Cell Workshop held May 8-9, 2011, in Arlington, Virginia. The body of the report focuses on the discussion that occurred within breakout sessions. The Executive Summary presents a few select highlights from each session.

87

Alkaline regenerative fuel cell systems for energy storage  

SciTech Connect

This paper presents the results of a preliminary design study of a Regenerative Fuel Cell Energy Storage system for application to future low-earth orbit space missions. This high energy density storage system is based on state-of-the-art alkaline electrolyte cell technology and incorporates dedicated fuel cell and electrolysis cell modules. 11 refs.

Schubert, F.H.; Reid, M.A.; Martin, R.E.

1981-01-01T23:59:59.000Z

88

Effect of Alkali and Alkaline Earth Metallic Species on Biochar Reactivity and Syngas Compositions during Steam Gasification  

Science Journals Connector (OSTI)

Effect of Alkali and Alkaline Earth Metallic Species on Biochar Reactivity and Syngas Compositions during Steam Gasification† ... Briefly, a biomass or biochar sample, held in a platinum (Pt) crucible, was ashed in air following a specially designed ashing program that raised the temperature to a final temperature of 600 °C at a very slow heating rate in order to prevent the ignition of the biomass/biochar hence to avoid the loss of AAEM species from the sample during oxidation. ... Therefore, wood may be a good fuel based on the consideration that this would potentially reduce the ash-related operation problems in a gasifier. ...

Kongvui Yip; Fujun Tian; Jun-ichiro Hayashi; Hongwei Wu

2009-07-24T23:59:59.000Z

89

E-Print Network 3.0 - alkaline single cell Sample Search Results  

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

aqueous-alkaline biocarbon fuel cell. In view of the fact... that aqueous-alkaline hydrogen fuel cells have been used to power an Austin car and a commercial Black Cab... in...

90

E-Print Network 3.0 - alkalinity Sample Search Results  

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

aqueous-alkaline biocarbon fuel cell. In view of the fact... that aqueous-alkaline hydrogen fuel cells have been used to power an Austin car and a commercial Black Cab... in...

91

E-Print Network 3.0 - alkaline-earth elements studied Sample...  

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

by Explorit Topic List Advanced Search Sample search results for: alkaline-earth elements studied Page: << < 1 2 3 4 5 > >> 1 Heavy Alkaline-earth Elements: Barium and Radium...

92

Cysteamine-induced inhibition of mucosal and pancreatic alkaline secretion in rat duodenum  

Science Journals Connector (OSTI)

To determine the effect of cysteamine on the alkaline secretion by the duodenal epithelium, pancreas, and Brunner's glands in relation to the pathogenesis of duodenal ulceration, the alkaline sec...

Keiji Ohe MD; DMSc; Yoshifumi Miura MD…

1988-03-01T23:59:59.000Z

93

E-Print Network 3.0 - alkaline hot springs Sample Search Results  

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

2 3 4 5 > >> 1 Geothermal fluxes of alkalinity in the Narayani river system of central Nepal Summary: investigated, source of river solutes and alkalinity. Active hot springs are...

94

E-Print Network 3.0 - alkaline melts beneath Sample Search Results  

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

et al. 2001), mac alkaline magmas... , it is not coincident that the mac rock at Bingham Canyon is alkaline (Waite et al. 1997) and the basaltic mac melt... specia- tion...

95

The pressure induced B1-B2 phase transition of alkaline halides and alkaline earth chalcogenides. A first principles investigation  

SciTech Connect

In this work, we considered the pressure induced B1-B2 phase transition of AB compounds. The DFT calculations were carried out for 11 alkaline halides, 11 alkaline earth chalcogenides and the lanthanide pnictide CeP. For both the B1 and the B2 structures of each compound, the energy was calculated as a function of the cell volume. The transition pressure, the bulk moduli and their pressure derivatives were obtained from the corresponding equations of state. The transition path of the Buerger mechanism was described using roots of the transition matrix. We correlated the computed enthalpies of activation to some structure defining properties of the compounds. A fair correlation to Pearsons hardness of the ions was observed. -- Graphical abstract: Pressure induced transition from the B1 structure (left) via the transition state (middle) to the B2 structure (right). Display Omitted highlights: > Pressure induced phase transitions in AB compounds were considered. > Alkaline halides and alkaline earth chalcogenides were treated. > DFT calculations with periodic boundary conditions were applied. > The transition path was described by roots of the transition matrix. > The enthalpy of activation was calculated for numerous compounds.

Potzel, Oliver, E-mail: oliver.potzel@uni-ulm.d [Institute of Theoretical Chemistry, D-89069 Ulm (Germany); Taubmann, Gerhard, E-mail: gerhard.taubmann@uni-ulm.d [Institute of Theoretical Chemistry, D-89069 Ulm (Germany)

2011-05-15T23:59:59.000Z

96

E-Print Network 3.0 - alkaline phosphatase produced Sample Search...  

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

phosphatase activity is strongly... compounds. KKeeyywwoorrddss:: biosensor; algae; Chlorella; alkaline phosphatase; fluorescence; heavy metals... ; Rechnitz and Ho, 1990). This...

97

Optimum Operating Conditions for Alkaline Water Electrolysis Coupled with Solar PV Energy System  

Science Journals Connector (OSTI)

This paper investigates theoretically and experimentally the optimum operating conditions for alkaline water electrolysis coupled with a solar photovoltaic (PV)...

Ashraf Balabel; Mohamed S. Zaky; Ismail Sakr

2014-05-01T23:59:59.000Z

98

Sealed feed-through for a wall in an alkaline battery  

SciTech Connect

The sealed feed-through interconnects two cells of an alkaline storage battery (eg. for an electrically propelled car) by passing through a wall of the battery. The battery includes a monobloc casing of plastic material defining at least two battery cell compartments which are separated by said wall, and said wall has an orifice for receiving the feed-through. The feed-through comprises a first portion for electrical connection to electrodes of a first polarity in a first one of the cells and a second portion for electrical connection to electrodes of opposite polarity in the other cell. In an alkaline battery, conventional welding techniques for making such feed-throughs in lead-acid batteries are not applicable because metals such as nickel steel must be used instead of lead. The resulting welding temperature would destroy the plastic wall. Instead, the first and second portions include interfitting male and female portions suitable for passing through said orifice from opposite sides thereof and for engaging each other in a force fit. Respective skirts surround said interfitting portions and serve to compress at least one deformable sealing member around the orifice. Stops are provided to prevent the wall being crushed when the feed-through portions are forced together.

Bellis, L.; Prokopp, R.

1984-10-30T23:59:59.000Z

99

Alkaline Microfluidic Hydrogen-Oxygen Fuel Cell as a Cathode Characterization Platform  

E-Print Network (OSTI)

Alkaline Microfluidic Hydrogen-Oxygen Fuel Cell as a Cathode Characterization Platform Fikile R of hydrogen H2 and oxygen O2 . Operating fuel cells in alkaline media, as opposed to acidic media, has on an alkaline microfluidic fuel cell for catalyst and electrode characterization. Its constantly refreshing

Kenis, Paul J. A.

100

Viscosity, specific (for liquids)  

Science Journals Connector (OSTI)

n. The ratio between the viscosity of a liquid and the viscosity of water at the same temperature. Specific viscosity is sometimes used interchangeably with relative viscosity for liquids.

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Plutonium(IV) precipitates formed in alkaline media in the presence of various anions  

SciTech Connect

The tendency of Pu(IV) to hydrolyze and form true solutions, colloid solutions, or insoluble precipitates has been known since the Manhattan Project. Since then, specific studies have been performed to examine in detail the equilibria of Pu(IV) hydrolytic reactions in various media. Great attention also has been paid to the preparation, structure, and properties of Pu(IV) polymers or colloids. These compounds found an important application in sol-gel technology for the preparation of nuclear fuel materials. A most important result of these works was the conclusion that Pu(IV) hydroxide, after some aging, consists of very small PuO{sub 2} crystallites and should therefore be considered to be Pu(IV) hydrous oxide. However, studies of the properties and behavior of solid Pu(IV) hydroxide in complex heterogeneous systems are rare. The primary goal of this investigation was to obtain data on the composition and properties of Pu(IV) hydrous oxide or other compounds formed in alkaline media under different conditions. Such information is important to understand Pu(IV) behavior and the forms of its existence in the Hanford Site alkaline tank waste sludge. This knowledge then may be applied in assessing plutonium criticality hazards in the storage, retrieval, and treatment of Hanford Site tank wastes as well as in understanding its contribution to the transuranic waste inventory (threshold at 100 nCi/g or about 5 {times} 10{sup {minus}6} M) of the separate solution and solid phases.

Krot, N.N.; Shilov, V.P.; Yusov, A.B.; Tananaev, I.G.; Grigoriev, M.S.; Garnov, A.Yu.; Perminov, V.P.; Astafurova, L.N.

1998-09-01T23:59:59.000Z

102

Aquatic insects in Montezuma Well, Arizona, USA: A travertine spring mound with high alkalinity and dissolved carbon dioxide  

SciTech Connect

An annotated list of aquatic insects from the high carbonate system of Montezuma Well, Arizona, USA, is presented for collections taken during 1976-1986. Fifty-seven taxa in 16 families are reported, including new distribution records for Arizona (Anacaena signaticollis, Laccobius ellipticus, and Crenitulus sp. (nr. debilis)) and the USA (Enochrus sharpi). Larval stages for Trichoptera, Lepidoptera, Megaloptera, Neuroptera, Chironomidae, and Anisoptera were absent even though the habitat lacks fish, and water temperature, dissolved oxygen, available food, and substrata appear adequate in Montezuma Well. The potential importance of alkalinity in restricting these insect groups is discussed.

Blinn, D.W.; Sanderson, M.W. (Northern Arizona Univ., Flagstaff (USA))

1989-01-31T23:59:59.000Z

103

2011 Alkaline Membrane Fuel Cell Workshop Final Report  

SciTech Connect

A workshop addressing the current state-of-the-art in alkaline membrane fuel cells (AMFCs) was held May 8-9, 2011, at the Crystal Gateway Marriott in Arlington, Virginia. This workshop was the second of its kind, with the first being held December 11-13, 2006, in Phoenix, Arizona. The 2011 workshop and associated workshop report were created to assess the current state of AMFC technology (taking into account recent advances), investigate the performance potential of AMFC systems across all possible power ranges and applications, and identify the key research needs for commercial competitiveness in a variety of areas.

Pivovar, B.

2012-02-01T23:59:59.000Z

104

FURNACE INJECTION OF ALKALINE SORBENTS FOR SULFURIC ACID CONTROL  

SciTech Connect

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, 2001 through September 30, 2001. 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, and the Dravo Lime Company are project co-funders. URS Corporation is the prime contractor. During the current period, American Electric Power (AEP) joined the project as an additional co-funder and as a provider of a host site for testing. This is the fourth reporting period for the subject Cooperative Agreement. During this period, 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 Station. These 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 Station), and a byproduct magnesium hydroxide slurry (both Gavin Station and BMP). The tests showed that injecting either the commercial or the byproduct magnesium hydroxide slurry could achieve up to 70 to 75% sulfuric acid removal. At BMP, the overall removal was limited by the need to maintain acceptable electrostatic precipitator (ESP) particulate control performance. At Gavin Station, 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. Balance of plant impacts, primarily on the ESP particulate control device, were also determined during both tests. These results are presented and discussed in this report.

Gary M. Blythe

2001-11-06T23:59:59.000Z

105

E-Print Network 3.0 - alkaline dust impact Sample Search Results  

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

Chem. Phys., 10, 39994012, 2010 www.atmos-chem-phys.net1039992010 Summary: in terms of accumulation of nitrate and sulfate, titration of dust alkalinity, and impact on...

106

E-Print Network 3.0 - alkaline secondary cell Sample Search Results  

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

batteries within AUVs Summary: that secondary lithium batteries offer the lowest energy cost. PEM fuel cells should produce energy at a lower... alkaline and several primary...

107

E-Print Network 3.0 - alkaline hypersaline mono Sample Search...  

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

Eng KineretDataCenterProfileDC.asp) and its lake sediments are also alkaline (Stiller and ... Source: Yager, Patricia L. - Department of Marine Sciences, University of...

108

E-Print Network 3.0 - alkaline flooding formulations Sample Search...  

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

Engineering 72 www.ext.vt.edu Produced by Communications and Marketing, College of Agriculture and Life Sciences, Summary: and alkaline soils and soils that have been...

109

E-Print Network 3.0 - alkaline hydrogen peroxide Sample Search...  

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

concentration, ethanol... RK, Sampath S, Shukla AK. An alkaline direct borohydride fuel cell with hydrogen peroxide as oxidant... of hydrogen ... Source: Zhao, Tianshou -...

110

Numerical Simulation of Displacement Mechanisms for Enhancing Heavy Oil Recovery during Alkaline Flooding  

Science Journals Connector (OSTI)

In this paper, a simulation technique has been developed and successfully applied to numerically simulate the experimentally determined displacement mechanisms governing alkaline flooding for enhancing oil recovery in heavy oil reservoirs. ... (8-13) The existing simulation techniques used for alkaline flooding in the conventional oil reservoirs result in significant discrepancy between the experimental and simulated pressure drop for alkaline flooding in heavy oil reservoirs. ... Both the scientific findings and the newly developed simulation technique will facilitate simulating and designing field-scale alkaline flooding for heavy oil reservoirs. ...

Mohamed Arhuoma; Daoyong Yang; Mingzhe Dong; Heng Li; Raphael Idem

2009-10-15T23:59:59.000Z

111

E-Print Network 3.0 - alkaline shift effect Sample Search Results  

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oxidation in alkaline media. The cell performance with the Au-modified Pd as the cathode catalyst yielded Source: Zhao, Tianshou - Department of Mechanical Engineering, Hong...

112

E-Print Network 3.0 - alkaline medium peliculas Sample Search...  

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

rate: medium Texture: medium Foliage Leaf arrangement: alternate (Fig... requirement: tree grows in full sun Soil tolerances: clay; loam; sand; slightly alkaline; acidic;...

113

E-Print Network 3.0 - alkali alkaline earth Sample Search Results  

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

Waterloo Collection: Chemistry 2 GEOL 305 Lecture 5 Felsic MaficIntermediate Summary: rare rhyolite Calc-alkaline and tholeiite basalts common, with less alkali basalt Mafic...

114

Design and development in the field of alkaline fuel cell technology.  

E-Print Network (OSTI)

?? This thesis is about the research on alkaline fuel cell (AFC) technology to investigate the long term operation with air. The aim was to… (more)

Schudt, Steffen, (Thesis)

2006-01-01T23:59:59.000Z

115

E-Print Network 3.0 - alkaline earth silicate Sample Search Results  

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

Science 7 Geothermal fluxes of alkalinity in the Narayani river system of central Nepal Summary: estimate that the springs provide 25 (15)% of the silicate-derived...

116

E-Print Network 3.0 - alkaline ph jump Sample Search Results  

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

NEB3 restriction buffer; extra slat prevents sample jumping... -to-anode with peristaltic pump. 14. Blot gel by alkaline transfer overnight. 12; Source: Heyer, Wolf-Dietrich -...

117

E-Print Network 3.0 - alkaline-earth hafnates bahfo3 Sample Search...  

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

apply the ab initio... of hafnium silicates (see e.g. Ref. 17). Perov- skite alkaline metal ... Source: Curtarolo, Stefano - Department of Mechanical Engineering and Materials...

118

E-Print Network 3.0 - alkaline nitrate solutions Sample Search...  

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

2010 www.atmos-chem-phys.net1039992010 Summary: . The model in- cludes explicit transport of size-resolved mineral dust and its alkalinity, nitrate... in terms of...

119

E-Print Network 3.0 - alkaline soils Sample Search Results  

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

and the results were compared to alkalinity ... Source: Kirby, Carl S. - Department of Geology, Bucknell University Collection: Geosciences 49 Remediation of uranium...

120

E-Print Network 3.0 - alkaline oxidizing conditions Sample Search...  

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highly alkaline conditions. This discovery ... Source: Bethke, Craig - Department of Geology, University of Illinois at Urbana-Champaign Collection: Environmental Sciences and...

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Functional Specifications  

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

Functional Specifications Functional Specifications Services Overview ECS Audio/Video Conferencing Fasterdata IPv6 Network Network Performance Tools (perfSONAR) ESnet OID Registry PGP Key Service Virtual Circuits (OSCARS) OSCARS Case Study Documentation User Manual FAQ Design Specifications Functional Specifications Notifications Publications Authorization Policy Default Attributes Message Security Clients For Developers Interfaces Links Hardware Requirements DOE Grids Service Transition Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Functional Specifications OSCARS Reservation Manager - Functional Specifications Year 3 Update (DRAFT)

122

Design Specifications  

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

Design Design Specifications Services Overview ECS Audio/Video Conferencing Fasterdata IPv6 Network Network Performance Tools (perfSONAR) ESnet OID Registry PGP Key Service Virtual Circuits (OSCARS) OSCARS Case Study Documentation User Manual FAQ Design Specifications Functional Specifications Notifications Publications Authorization Policy Default Attributes Message Security Clients For Developers Interfaces Links Hardware Requirements DOE Grids Service Transition Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Design Specifications OSCARS Reservation Manager - Design Specifications Year 3 Update (DRAFT) David Robertson, Chin Guok

123

Coupling the Alkaline-Surfactant-Polymer Technology and The Gelation Technology to Maximize Oil Production  

SciTech Connect

Gelation technologies have been developed to provide more efficient vertical sweep efficiencies for flooding naturally fractured oil reservoirs or more efficient areal sweep efficiency for those with high permeability contrast ''thief zones''. The field proven alkaline-surfactant-polymer technology economically recovers 15% to 25% OOIP more oil than waterflooding from swept pore space of an oil reservoir. However, alkaline-surfactant-polymer technology is not amenable to naturally fractured reservoirs or those with thief zones because much of injected solution bypasses target pore space containing oil. This work investigates whether combining these two technologies could broaden applicability of alkaline-surfactant-polymer flooding into these reservoirs. A prior fluid-fluid report discussed interaction of different gel chemical compositions and alkaline-surfactant-polymer solutions. Gel solutions under dynamic conditions of linear corefloods showed similar stability to alkaline-surfactant-polymer solutions as in the fluid-fluid analyses. Aluminum-polyacrylamide, flowing gels are not stable to alkaline-surfactant-polymer solutions of either pH 10.5 or 12.9. Chromium acetate-polyacrylamide flowing and rigid flowing gels are stable to subsequent alkaline-surfactant-polymer solution injection. Rigid flowing chromium acetate-polyacrylamide gels maintained permeability reduction better than flowing chromium acetate-polyacrylamide gels. Silicate-polyacrylamide gels are not stable with subsequent injection of either a pH 10.5 or a 12.9 alkaline-surfactant-polymer solution. Chromium acetate-xanthan gum rigid gels are not stable to subsequent alkaline-surfactant-polymer solution injection. Resorcinol-formaldehyde gels were stable to subsequent alkaline-surfactant-polymer solution injection. When evaluated in a dual core configuration, injected fluid flows into the core with the greatest effective permeability to the injected fluid. The same gel stability trends to subsequent alkaline-surfactant-polymer injected solution were observed. Aluminum citrate-polyacrylamide, resorcinol-formaldehyde, and the silicate-polyacrylamide gel systems did not produce significant incremental oil in linear corefloods. Both flowing and rigid flowing chromium acetate-polyacrylamide gels and the xanthan gum-chromium acetate gel system produced incremental oil with the rigid flowing gel producing the greatest amount. Higher oil recovery could have been due to higher differential pressures across cores. None of the gels tested appeared to alter alkaline-surfactant-polymer solution oil recovery. Total waterflood plus chemical flood oil recovery sequence recoveries were all similar. Chromium acetate-polyacrylamide gel used to seal fractured core maintain fracture closure if followed by an alkaline-surfactant-polymer solution. Chromium acetate gels that were stable to injection of alkaline-surfactant-polymer solutions at 72 F were stable to injection of alkaline-surfactant-polymer solutions at 125 F and 175 F in linear corefloods. Chromium acetate-polyacrylamide gels maintained diversion capability after injection of an alkaline-surfactant-polymer solution in stacked; radial coreflood with a common well bore. Xanthan gum-chromium acetate gels maintained gel integrity in linear corefloods after injection of an alkaline-surfactant-polymer solution at 125 F. At 175 F, Xanthan gum-chromium acetate gels were not stable either with or without subsequent alkaline-surfactant-polymer solution injection. Numerical simulation demonstrated that reducing the permeability of a high permeability zone of a reservoir with gel improved both waterflood and alkaline-surfactant-polymer flood oil recovery. A Minnelusa reservoir with both A and B sand production was simulated. A and B sands are separated by a shale layer. A sand and B sand waterflood oil recovery was improved by 196,000 bbls when a gel was placed in the B sand. A sand and B sand alkaline-surfactant-polymer flood oil recovery was improved by 596,000 bbls when a gel was placed in the B sand. Alkaline-surfactant-pol

Malcolm Pitts; Jie Qi; Dan Wilson; David Stewart; Bill Jones

2005-10-01T23:59:59.000Z

124

Alkaline earth lead and tin compounds Ae2Pb, Ae2Sn, Ae=Ca,Sr,Ba, as thermoelectric materials  

SciTech Connect

We present a detailed theoretical study of three alkaline earth compounds Ca2Pb, Sr2Pb and Ba2Pb, which have undergone little previous study, calculating electronic band structures and Boltzmann transport and bulk moduli using density functional theory. We also study the corresponding tin compounds Ca2 Sn, Sr2 Sn and Ba2 Sn. We find that these are all narrow band gap semiconductors with an electronic structure favorable for thermoelectric performance, with substantial thermopowers for the lead compounds at temperature ranges from 300 to 800 K. For the lead compounds, we further find very low calculated bulk moduli - roughly half of the values for the lead chalcogenides, suggestive of soft phonons and hence low lattice thermal conductivity. All these facts indicate that these materials merit experimental investigation as potential high performance thermoelectrics. We find good potential for thermoelectric performance in the environmentally friendly stannide materials, particularly at high temperature.

Parker, David S [ORNL; Singh, David J [ORNL

2013-01-01T23:59:59.000Z

125

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

E-Print Network (OSTI)

1 Mineral replacement rate of olivine by chrysotile and brucite under high1 alkaline conditions2 3 replaced by18 chrysotile and brucite under high alkaline conditions. In our study, olivine replacement19 between olivine and chrysotile-brucite minerals. Coupled dissolution-precipitation21 led to the alteration

Paris-Sud XI, Université de

126

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

E-Print Network (OSTI)

Mineral replacement rate of olivine by chrysotile and brucite under high alkaline conditions Romain grains were replaced by chrysotile and brucite under high alkaline conditions. In our study, olivine at the interface between olivine and chrysotile­brucite minerals. Coupled dissolution­precipitation led

Montes-Hernandez, German

127

Coupling the Alkaline-Surfactant-Polymer Technology and The Gelation Technology to Maximize Oil Production  

SciTech Connect

Performance and produced polymer evaluation of four alkaline-surfactant-polymer projects concluded that only one of the projects could have benefited from combining the alkaline-surfactant-polymer and gelation technologies. Cambridge, the 1993 Daqing, Mellott Ranch, and the Wardlaw alkaline-surfacant-polymer floods were studied. An initial gel treatment followed by an alkaline-surfactant-polymer flood in the Wardlaw field would have been a benefit due to reduction of fracture flow. Numerical simulation demonstrated that reducing the permeability of a high permeability zone of a reservoir with gel improved both waterflood and alkaline-surfactant-polymer flood oil recovery. A Minnelusa reservoir with both A and B sand production was simulated. A and B sands are separated by a shale layer. A sand and B sand waterflood oil recovery was improved by 196,000 bbls or 3.3% OOIP when a gel was placed in the B sand. Alkaline-surfactant-polymer flood oil recovery improvement over a waterflood was 392,000 bbls or 6.5% OOIP. Placing a gel into the B sand prior to an alkaline-surfactant-polymer flood resulted in 989,000 bbl or 16.4% OOIP more oil than only water injection. A sand and B sand alkaline-surfactant-polymer flood oil recovery was improved by 596,000 bbls or 9.9% OOIP when a gel was placed in the B sand.

Malcolm Pitts; Jie Qi; Dan Wilson; Phil Dowling; David Stewart; Bill Jones

2005-12-01T23:59:59.000Z

128

Alkaline membrane fuel cells with in-situ cross-linked ionomers Yongjun Leng a  

E-Print Network (OSTI)

optimization is needed for the commercialization of alkaline membrane fuel cell (AMFC) technologiesAlkaline membrane fuel cells with in-situ cross-linked ionomers Yongjun Leng a , Lizhu Wang b membrane fuel cell (AMFC) in-situ cross-linking ionomer net water transport coefficient A B S T R A C

129

Specific Viscosity  

Science Journals Connector (OSTI)

n Equal to the relative viscosity of the same solution minus one. It represents the increase in viscosity that may be contributed by the polymeric solute. The specific viscosity, ?sp is defined by th...

Jan W. Gooch

2011-01-01T23:59:59.000Z

130

Detection of human rotavirus by using an alkaline phosphatase-conjugated synthetic DNA probe in comparison with enzyme-linked immunoassay and polyacrylamide gel analysis.  

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...alkaline phosphatase-conjugated synthetic DNA probe in comparison with enzyme-linked...alkaline phosphatase-conjugated synthetic DNA probe in comparison with enzyme-linked...Alkaline Phosphatase-Conjugated Synthetic DNA Probe in Comparison with Enzyme-Linked...

D M Olive; S K Sethi

1989-01-01T23:59:59.000Z

131

Improvement of thermoelectric properties of alkaline-earth hexaborides  

SciTech Connect

Thermoelectric (TE) and transport properties of alkaline-earth hexaborides were examined to investigate the possibility of improvement in their TE performance. As carrier concentration increased, electrical conductivity increased and the absolute value of the Seebeck coefficient decreased monotonically, while carrier mobility was almost unchanged. These results suggest that the electrical properties of the hexaboride depend largely on carrier concentration. Thermal conductivity of the hexaboride was higher than 10 W/m K even at 1073 K, which is relatively high among TE materials. Alloys of CaB{sub 6} and SrB{sub 6} were prepared in order to reduce lattice thermal conductivity. Whereas the Seebeck coefficient and electrical conductivity of the alloys were intermediate between those of CaB{sub 6} and SrB{sub 6} single phases, the thermal conductivities of the alloys were lower than those of both single phases. The highest TE performance was obtained in the vicinity of Ca{sub 0.5}Sr{sub 0.5}B{sub 6}, indicating that alloying is effective in improving the performance. - Graphical abstract: Thermoelectric figure-of-merit, ZT, for (Ca,Sr)B{sub 6} alloys. The highest ZT value of 0.35 at 1073 K was obtained due to effective reduction of thermal conductivity by alloying.

Takeda, Masatoshi [Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188 (Japan)]. E-mail: takeda@mech.nagaokaut.ac.jp; Terui, Manabu [Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188 (Japan); Takahashi, Norihito [Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188 (Japan); Ueda, Noriyoshi [Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188 (Japan)

2006-09-15T23:59:59.000Z

132

Alkaline stable C2-substituted imidazolium-based cross-linked anion exchange membranes for alkaline fuel cell applications  

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Abstract Novel C2-substituted imidazolium-based cross-linked anion exchange membranes (AEMs) are prepared via irradiation with ultraviolet light cross-linking of styrene, acrylonitrile and 1,3-diallyl-2-methyl imidazolium bromine ([DAMIm][Br]), and followed by anion exchange with hydroxide ions. [DAMIm][Br] is synthesized and used both as crosslinker and hydrophilic phase. The ionic conductivity of the \\{AEMs\\} increases with increasing [DAMIm][Br] content due to the hydrophilic regions and the continuous hydrophilic polymeric networks formed in the membranes. The imidazolium-based cross-linked \\{AEMs\\} show excellent thermal stabilities, and the membrane which containing 30% mass fraction of [DAMIm][Br] shows ionic conductivity up to 2.0 × 10?2 S cm?1 and good long-term chemical stability in 1 M KOH solution. The results of this study suggest that the C2-substituted imidazolium-based cross-linked \\{AEMs\\} have good perspectives for alkaline fuel cell applications.

Bencai Lin; Fuqiang Chu; Yurong Ren; Baoping Jia; Ningyi Yuan; Hui Shang; Tianying Feng; Yuanyuan Zhu; Jianning Ding

2014-01-01T23:59:59.000Z

133

E-Print Network 3.0 - alkaline assisted thermal Sample Search...  

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. Adam Ray, Matt Van de Bogert, and Carl Johnson for technical assistance; and M. Stiller for providing... and alkalinity (HCO and CO ), calcite dissolution,2 3 3 and methane...

134

PdNi Hollow Nanoparticles for Improved Electrocatalytic Oxygen Reduction in Alkaline Environments  

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The electrocatalyst is finally examined in a H2/O2 alkaline anion exchange membrane fuel cell; the results show that such electrocatalysts could work in a real fuel cell application as a more efficient catalyst than state-of-the-art commercially available Pt/C. ... (3-5) It has been well documented that the overpotential for the ORR will be significantly reduced in a high pH (alkaline) environment, thus offering the possibilities of lower usage and wider selection of electrocatalysts other than platinum to be available for this catalytic reaction,(6, 7) while recent advances in the development of alkaline anion exchange membranes (AAEMs) have also seen the performance of the anion exchange membrane fuel cell (AEMFC) approach that of the analogous, conventional acidic Nafion proton exchange membrane fuel cell (PEMFC). ... (8-10) This adds further incentive to the need to develop novel nanostructured electrocatalysts for the ORR in the alkaline medium. ...

Meng Wang; Weimin Zhang; Jiazhao Wang; David Wexler; Simon D. Poynton; Robert C.T. Slade; Huakun Liu; Bjorn Winther-Jensen; Robert Kerr; Dongqi Shi; Jun Chen

2013-11-07T23:59:59.000Z

135

E-Print Network 3.0 - alkalinity bicarbonate rejection Sample...  

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By Elton Roberts Ripon, CA Summary: to bicarbonate in the water. Dropping the pH of the water leads to a decrease in the water alkalinity. The sole... is caused by the presence of...

136

E-Print Network 3.0 - alkaline spring system Sample Search Results  

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

flowers in the spring. It is also quite drought and alkaline soil tolerant... of soil pH. Care: Prune only in summer. Winter or spring pruning results in profuse bleeding. This...

137

Vacuum plasma spraying of high-performance electrodes for alkaline water electrolysis  

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Electrode coatings for advanced alkaline water electrolysis were produced by applying the vacuum plasma...3O4 matrix composite layers were developed for the anodic oxygen evolution reaction. For the preparation o...

G. Schiller; R. Henne; V. Borck

1995-06-01T23:59:59.000Z

138

E-Print Network 3.0 - alkaline earths Sample Search Results  

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

REE with organic matter in alkaline organic rich-water. .H ZRUGV Rare earth... of rare earth elements (REE) to humic acid (HA) and carbonates was studied experimentally at various...

139

E-Print Network 3.0 - alkali metal alkaline Sample Search Results  

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with alkali-metals 9, loi, alkaline earth metals l,18 and some of other rare-earth elements 19, 20 have... alkali metals were doped into C60 solids 9 and...

140

E-Print Network 3.0 - alkaline earth neptunatesiv Sample Search...  

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REE with organic matter in alkaline organic rich-water. .H ZRUGV Rare earth... of rare earth elements (REE) to humic acid (HA) and carbonates was studied experimentally at various...

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

E-Print Network 3.0 - alkaline earth halogenides Sample Search...  

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REE with organic matter in alkaline organic rich-water. .H ZRUGV Rare earth... of rare earth elements (REE) to humic acid (HA) and carbonates was studied experimentally at various...

142

E-Print Network 3.0 - alkaline earth zinc-aluminophosphate Sample...  

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REE with organic matter in alkaline organic rich-water. .H ZRUGV Rare earth... of rare earth elements (REE) to humic acid (HA) and carbonates was studied experimentally at various...

143

Isolation of Cyanide Hydratase Mutants from Gloeocerospora Sorghi at alkaline pH  

E-Print Network (OSTI)

is stored at. This project attempts to optimize the screening and mutagenesis methods in hopes of a isolating an alkaline tolerant mutant of cyanide hydratase, an enzyme originally found in the fungus Gloeocercospora sorghi. This approach incorporates...

Lessen, Henry Joseph

2013-02-04T23:59:59.000Z

144

Relationships between Structure and Alkaline Stability of Imidazolium Cations for Fuel Cell Membrane Applications  

Science Journals Connector (OSTI)

Relationships between Structure and Alkaline Stability of Imidazolium Cations for Fuel Cell Membrane Applications ... Samuel C. Price *, Kristen S. Williams , and Frederick L. Beyer ... membranes (fueled with H or MeOH) and also to identify candidate alk. ...

Samuel C. Price; Kristen S. Williams; Frederick L. Beyer

2014-01-16T23:59:59.000Z

145

E-Print Network 3.0 - alkaline air pollution Sample Search Results  

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air pollution Search Powered by Explorit Topic List Advanced Search Sample search results for: alkaline air pollution Page: << < 1 2 3 4 5 > >> 1 Long-term and seasonal variations...

146

Enhanced Electrooxidation of Ethanol Using Pd/C + TiO2 Electrocatalysts in Alkaline Media  

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This work describes the use of Pd nanoparticles synthetized by the borohydride process and supported on physical mixtures of C + TiO2 toward the ethanol electrooxidation reaction in alkaline media. In this...2 ra...

J. C. M. Silva; G. S. Buzzo; R. F. B. De Souza; E. V. Spinacé…

2014-08-01T23:59:59.000Z

147

E-Print Network 3.0 - alkaline-earth metal oxides Sample Search...  

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differ in the nature of the angle... ). Weidner and Hamaya (1983) observed that the transition-metal oxides and the alkaline-earth oxides fail... ... Source: Price, G. David -...

148

E-Print Network 3.0 - affects alkaline phosphatase Sample Search...  

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7, 589-598, May 1995 O 1995 American Society of Plant Physiologists The Activation of the Potato PR-lOa Gene Requires the Summary: is affected by alkaline phosphatase only in...

149

Alkaline Ionic Liquids as Catalysts: A Novel and Green Process for the Dehydration of Carbohydrates To Give 5-Hydroxymethylfurfural  

Science Journals Connector (OSTI)

Alkaline Ionic Liquids as Catalysts: A Novel and Green Process for the Dehydration of Carbohydrates To Give 5-Hydroxymethylfurfural ... An efficient process for the conversion of carbohydrates into 5-hydroxymethylfurfural (5-HMF) catalyzed by the room temperature ionic liquid (IL) 1-butyl-3-methylimidazolium hydroxide ([BMIM]OH), using dimethyl sulfoxide (DMSO) as solvent, has been developed. ... (6, 7) The efficient transformation of hexoses such as fructose, glucose, galactose, and mannose or disaccharides such as sucrose and cellobiose into 5-hydroxymethylfurfural (5-HMF)—which is regarded as a versatile platform molecule and is used in the production of fine chemicals, pharmaceuticals, and polymers—is a key step in the use of carbohydrates to produce liquid fuels and value-added chemicals. ...

Yong-Shui Qu; Yan-Lei Song; Chong-Pin Huang; Jie Zhang; Biao-Hua Chen

2012-09-15T23:59:59.000Z

150

Oxyanion Behavior in Alkaline Environments:? Sorption and Desorption of Arsenate in Ettringite  

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Oxyanion Behavior in Alkaline Environments:? Sorption and Desorption of Arsenate in Ettringite ... Arsenate sorption by ettringite [Ca6Al2(SO4)3(OH)12·26H2O] is examined as adsorption and coprecipitation systems at alkaline pH (10.0?12.5) ... Although high pH increased ettringite stability in concentrated As(V) solutions, it did not influence total As(V) sorption. ...

Satish C. B. Myneni; Samuel J. Traina; Terry J. Logan; Glenn A. Waychunas

1997-05-29T23:59:59.000Z

151

VEHICLE SPECIFICATIONS  

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

VEHICLE SPECIFICATIONS 1 Vehicle Features Base Vehicle: 2011 Chevrolet Volt VIN: 1G1RD6E48BUI00815 Class: Compact Seatbelt Positions: 4 Type 2 : Multi-Mode PHEV (EV, Series, and Power-split) Motor Type: 12-pole permanent magnet AC synchronous Max. Power/Torque: 111 kW/370 Nm Max. Motor Speed: 9500 rpm Cooling: Active - Liquid cooled Generator Type: 16-pole permanent magnet AC synchronous Max. Power/Torque: 55 kW/200 Nm Max. Generator Speed: 6000 rpm Cooling: Active - Liquid cooled Battery Manufacturer: LG Chem Type: Lithium-ion Cathode/Anode Material: LiMn 2 O 4 /Hard Carbon Number of Cells: 288 Cell Config.: 3 parallel, 96 series Nominal Cell Voltage: 3.7 V Nominal System Voltage: 355.2 V Rated Pack Capacity: 45 Ah Rated Pack Energy: 16 kWh Weight of Pack: 435 lb

152

VEHICLE SPECIFICATIONS  

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Page 1 of 5 Page 1 of 5 VEHICLE SPECIFICATIONS 1 Vehicle Features Base Vehicle: 2011 Nissan Leaf VIN: JN1AZ0CP5BT000356 Class: Mid-size Seatbelt Positions: 5 Type: EV Motor Type: Three-Phase, Four-Pole Permanent Magnet AC Synchronous Max. Power/Torque: 80 kW/280 Nm Max. Motor Speed: 10,390 rpm Cooling: Active - Liquid cooled Battery Manufacturer: Automotive Energy Supply Corporation Type: Lithium-ion - Laminate type Cathode/Anode Material: LiMn 2 O 4 with LiNiO 2 /Graphite Pack Location: Under center of vehicle Number of Cells: 192 Cell Configuration: 2 parallel, 96 series Nominal Cell Voltage: 3.8 V Nominal System Voltage: 364.8 V Rated Pack Capacity: 66.2 Ah Rated Pack Energy: 24 kWh Max. Cell Charge Voltage 2 : 4.2 V Min. Cell Discharge Voltage 2 : 2.5 V

153

Polysulfone and zirconia composite separators for alkaline water electrolysis  

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The novel composite separators composed of polysulfone and zirconia were prepared by phase inversion precipitation technique. This technique allows pre-evaporation time and extraction temperature to be varied ...

Li Xu; Wei Li; Yan You; Shaoxing Zhang…

2013-06-01T23:59:59.000Z

154

Transition from alkaline to calc-alkaline volcanism during evolution of the Paleoproterozoic Francevillian basin of eastern Gabon (Western Central Africa)  

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Abstract We report new geochemical data for the volcanic and subvolcanic rocks associated with the evolution of the Francevillian basin of eastern Gabon during Paleoproterozoic times (c. 2.1–2 Ga). Filling of this basin has proceeded through four main sedimentary or volcano-sedimentary episodes, namely FA, FB, FC and FD. Volcanism started during the FB episode being present only in the northern part of the basin (Okondja sub-basin). This volcanism is ultramafic to trachytic in composition and displays a rather constant alkaline geochemical signature. This signature is typical of a within-plate environment, consistent with the rift-setting generally postulated for the Francevillian basin during the FB period. Following FB, the FC unit is 10–20 m-thick silicic horizon (jasper) attesting for a massive input of silica in the basin. Following FC, the FD unit is a c. 200–400 m-thick volcano-sedimentary sequence including felsic tuffs and epiclastic rocks. The geochemical signatures of these rocks are totally distinct from those of the FB alkaline lavas. High Th/Ta and La/Ta ratios attest for a calc-alkaline signature and slight fractionation between heavy rare-earth suggests melting at a rather low pressure. Such characteristics are comparable to those of felsic lavas associated with the Taupo zone of New Zealand, a modern ensialic back-arc basin. Following FD, the FE detrital unit is defined only in the Okondja region, probably associated with a late-stage collapse of the northern part of the basin. It is suggested that the alkaline to calc-alkaline volcanic transition reflects the evolution of the Francevillian basin from a diverging to a converging setting, in response to the onset of converging movements in the Eburnean Belt of Central Africa.

Denis Thiéblemont; Pascal Bouton; Alain Préat; Jean-Christian Goujou; Monique Tegyey; Francis Weber; Michel Ebang Obiang; Jean Louis Joron; Michel Treuil

2014-01-01T23:59:59.000Z

155

Advances in Fe(VI) charge storage: Part I. Primary alkaline super-iron batteries  

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Recent advances in super-iron batteries, based on an unusual Fe(VI) cathodic charge storage, are presented. Fe(VI) cathodes that have been demonstrated in super-iron batteries include the synthesized Fe(VI) compound with three-electron cathodic charge capacity Na2FeO4, K2FeO4, Rb2FeO4, Cs2FeO4 (alkali Fe(VI) salts), alkali earth Fe(VI) salts BaFeO4, SrFeO4, and also a transition Fe(VI) salt Ag2FeO4 which exhibits a five-electron cathodic charge storage. This paper focus on the primary alkaline Fe(VI) charge storage in aqueous electrolyte systems. Primary alkaline super-iron batteries exhibit a higher capacity than conventional alkaline batteries. Configuration optimization, enhancement and mediation of Fe(VI) cathode charge transfer of primary Fe(VI) alkaline batteries are summarized. Composite Fe(VI)/Mn(IV or VII), Fe(VI)/Ag(II) and zirconia coating stabilized Fe(VI)/Ag(II) cathode alkaline batteries are also illustrated.

Xingwen Yu; Stuart Licht

2007-01-01T23:59:59.000Z

156

Coupling the Alkaline-Surfactant-Polymer Technology and The Gelation Technology to Maximize Oil Production  

SciTech Connect

Gelation technologies have been developed to provide more efficient vertical sweep efficiencies for flooding naturally fractured oil reservoirs or reservoirs with different sand lenses with high permeability contrast. The field proven alkaline-surfactant-polymer technology economically recovers 15% to 25% OOIP more crude oil than waterflooding from swept pore space of an oil reservoir. However, alkaline-surfactant-polymer technology is not amenable to naturally fractured reservoirs or reservoirs with high permeability contrast zones because much of injected solution bypasses target pore space containing oil. This work investigates whether combining these two technologies could broaden applicability of alkaline-surfactant-polymer flooding into these reservoirs. Fluid-fluid interaction with different gel chemical compositions and alkaline-surfactant-polymer solution with pH values ranging from 9.2 to 12.9 have been tested. Aluminum-polyacrylamide gels are not stable to alkaline-surfactant-polymer solutions at any pH. Chromium-polyacrylamide gels with polymer to chromium ion ratios of 25 or greater were stable to alkaline-surfactant-polymer solutions if solution pH was 10.6 or less. When the polymer to chromium ion was 15 or less, chromium-polyacrylamide gels were stable to alkaline-surfactant-polymer solutions with pH values up to 12.9. Chromium-xanthan gum gels were stable to alkaline-surfactant-polymer solutions with pH values of 12.9 at the polymer to chromium ion ratios tested. Silicate-polyacrylamide, resorcinol-formaldehyde, and sulfomethylated resorcinol-formaldehyde gels were also stable to alkaline-surfactant-polymer solutions with pH values ranging from 9.2 to 12.9. Iron-polyacrylamide gels were immediately destroyed when contacted with any of the alkaline-surfactant-polymer solutions with pH values ranging from 9.2 to 12.9. Gel solutions under dynamic conditions of linear corefloods showed similar stability to alkaline-surfactant-polymer solutions as in the fluid-fluid analyses with the exception of the xanthan gum-chromium acetate gels. Aluminum-polyacrylamide flowing gels are not stable to alkaline-surfactant-polymer solutions of either pH 10.5 or 12.9, either in linear corefloods or in dual separate radial core, common manifold corefloods. Chromium acetate-polyacrylamide flowing and rigid tonguing gels are stable to subsequent alkaline-surfactant-polymer solution injection. Rigid tonguing chromium acetate-polyacrylamide gels maintained permeability reduction better than flowing chromium acetate-polyacrylamide gels. Chromium acetate gels were stable to injection of alkaline-surfactant-polymer solutions at 72 F, 125 F and 175 F in linear corefloods. Chromium acetate-polyacrylamide gels maintained diversion capability after injection of an alkaline-surfactant-polymer solution in stacked; radial coreflood with a common well bore. Chromium acetate-polyacrylamide gel used to seal fractured core maintain fracture closure if followed by an alkaline-surfactant-polymer solution. Chromium acetatexanthan gum rigid gels are not stable to subsequent alkaline-surfactant-polymer solution injection at 72, 125, and 175 F. Silicate-polyacrylamide gels are not stable with subsequent injection of either a pH 10.5 or a 12.9 alkaline-surfactant-polymer solution. Resorcinol-formaldehyde gels were stable to subsequent alkaline-surfactant-polymer solution injection. When evaluated in a dual core configuration, injected fluid flows into the core with the greatest effective permeability to the injected fluid. The same gel stability trends to subsequent alkaline-surfactant-polymer injected solution were observed. Aluminum citrate-polyacrylamide, resorcinol-formaldehyde, and the silicate-polyacrylamide gel systems did not produce significant incremental oil in linear corefloods. Both flowing and rigid tonguing chromium acetate-polyacrylamide gels and the xanthan gum-chromium acetate gel system produced incremental oil with the rigid tonguing gel producing the greatest amount. Higher oil recovery could have been due to higher differential

Malcolm Pitts; Jie Qi; Dan Wilson; Phil Dowling; David Stewart; Bill Jones

2005-12-01T23:59:59.000Z

157

Development and Parametric Testing of Alkaline Water Electrolysis Cells for Hydrogen Production Based on Inorganic-Membrane-Electrolyte Technology  

Science Journals Connector (OSTI)

A research programme aiming at the development of a new advanced concept in alkaline water electrolysis has been demonstrated at S.C.K....

H. Vandenborre; L. H. Baetsle; W. Hebel; R. Leysen…

1980-01-01T23:59:59.000Z

158

Preferential Acidic, Alkaline and Neutral Solubility of Metallic Elements In Fly Ash  

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Preferential Acidic, Alkaline and Neutral Solubility of Preferential Acidic, Alkaline and Neutral Solubility of Metallic Elements in Fly Ash Ann G. Kim 1 1 ORISE Research Fellow, National Energy Technology Laboratory, US Department of Energy, 626 Cochrans Mill Rd., Pittsburgh, PA 15236-0940 KEYWORDS: Coal Utilization By-Products, leaching, pH ABSTRACT In the US, over 100 million tons of coal utilization by-products (CUB) are generated annually. To determine if exposure of these materials to aqueous fluids poses an environmental threat, researchers at the National Energy Technology Laboratory (NETL) have conducted extensive leaching tests. Five 1 kg samples of 35 PC fly ashes have been leached with acid, neutral and alkaline solutions at an approximate rate of 130 mL/d for 1 to 3 months. The leachates are

159

Alkaline subcritical water gasification of dairy industry waste (Whey)  

Science Journals Connector (OSTI)

The near-critical water gasification of dairy industry waste in the form of Whey, a product composed of mixtures of carbohydrates (mainly lactose) and amino acids such as glycine and glutamic acid, has been studied. The gasification process involved partial oxidation with hydrogen peroxide in the presence of NaOH. The reactions were studied over the temperature range from 300 °C to 390 °C, corresponding pressures of 9.5–24.5 MPa and reaction times from 0 min to 120 min. Hydrogen production was affected by the presence of NaOH, the concentration of H2O2, temperature, reaction time and feed concentration. Up to 40% of the theoretical hydrogen gas production was achieved at 390 °C. Over 80% of the Whey nitrogen content was found as ammonia, mainly in the liquid effluent.

Rattana Muangrat; Jude A. Onwudili; Paul T. Williams

2011-01-01T23:59:59.000Z

160

CO2 Mitigation Potential of Mineral Carbonation with Industrial Alkalinity Sources in the United States  

Science Journals Connector (OSTI)

CO2 Mitigation Potential of Mineral Carbonation with Industrial Alkalinity Sources in the United States ... We show that in the U.S., industrial alkaline byproducts have the potential to mitigate approximately 7.6 Mt CO2/yr, of which 7.0 Mt CO2/yr are CO2 captured through mineral carbonation and 0.6 Mt CO2/yr are CO2 emissions avoided through reuse as synthetic aggregate (replacing sand and gravel). ... This work was supported by the U.S. Department of Energy under Contract DE-AC36-08-GO28308 with the National Renewable Energy Laboratory for the Joint Institute for Strategic Energy Analysis. ...

Abby Kirchofer; Austin Becker; Adam Brandt; Jennifer Wilcox

2013-06-05T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Depolarizing collisions with hydrogen: neutral and singly ionized alkaline earths  

E-Print Network (OSTI)

Depolarizing collisions are elastic or quasielastic collisions that equalize the populations and destroy the coherence between the magnetic sublevels of atomic levels. In astrophysical plasmas, the main depolarizing collider is neutral hydrogen. We consider depolarizing rates on the lowest levels of neutral and singly ionized alkaly-earths Mg I, Sr I, Ba I, Mg II, Ca II, and Ba II, due to collisions with H. We compute ab initio potential curves of the atom-H system and solve the quantum mechanical dynamics. From the scattering amplitudes we calculate the depolarizing rates for Maxwellian distributions of colliders at temperatures T atmosphere, and their effect on Hanle effect diagnostics of solar magnetic fields.

Sainz, Rafael Manso; Sanz-Sanz, Cristina; Aguado, Alfredo; Ramos, Andres Asensio; Bueno, Javier Trujillo

2014-01-01T23:59:59.000Z

162

Harnessing Genetic Diversity in Saccharomyces cerevisiae for Fermentation of Xylose in Hydrolysates of Alkaline Hydrogen Peroxide-Pretreated Biomass  

Science Journals Connector (OSTI)

...inhibitory effects on cell growth and fermentation...34). Alkaline hydrogen peroxide (AHP...production of fuel ethanol. J...characterization of cell wall decomposition...Banerjee, G , S Car, T Liu, DL Williams...integration of alkaline hydrogen peroxide pretreatment...organization of plant cell walls, p 61-93...

Trey K. Sato; Tongjun Liu; Lucas S. Parreiras; Daniel L. Williams; Dana J. Wohlbach; Benjamin D. Bice; Irene M. Ong; Rebecca J. Breuer; Li Qin; Donald Busalacchi; Shweta Deshpande; Chris Daum; Audrey P. Gasch; David B. Hodge

2013-11-08T23:59:59.000Z

163

MINERALOGY AND GENESIS OF SMECTITES IN AN ALKALINE-SALINE ENVIRONMENT OF PANTANAL WETLAND, BRAZIL  

E-Print Network (OSTI)

MINERALOGY AND GENESIS OF SMECTITES IN AN ALKALINE-SALINE ENVIRONMENT OF PANTANAL WETLAND, BRAZIL, Universidade de Sa~o Paulo (USP), Av. Prof. Dr. Lineu Prestes, 338, 05508-900, Sa~o Paulo, Brazil 2 Soil-saline lake of Nhecola^ndia, a sub-region of the Pantanal wetland, Brazil, and then to identify the mechanisms

Ahmad, Sajjad

164

Surface structural changes of perovskite oxides during oxygen evolution in alkaline electrolyte  

E-Print Network (OSTI)

Perovskite oxides such Ba0.5Sr0.5Co0.8Fe0.8O3-6 (BSCF82) are among the most active catalysts for the oxygen evolution reaction (OER) in alkaline solution reported to date. In this work it is shown via high resolution ...

May, Kevin J. (Kevin Joseph)

2013-01-01T23:59:59.000Z

165

Methanogenesis in Big Soda Lake, Nevada: an Alkaline, Moderately Hypersaline Desert Lake  

Science Journals Connector (OSTI)

...Methanogenesis in Big Soda Lake, Nevada: an Alkaline, Moderately...slurries from Big Soda Lake, Nevada, produced significant...MATERIALS AND METHODS Site description and sampling...is located in eastern Nevada near Fallon (-350 miles...injected into a sterile test tube (18 x 150 mm; Bellco...

Ronald S. Oremland; Lorraine Marsh; David J. DesMarais

1982-02-01T23:59:59.000Z

166

Separating natural and bomb-produced radiocarbon in the ocean: The potential alkalinity method  

E-Print Network (OSTI)

in the upper ocean, and as a proxy for anthropogenic CO2 concentration. Both the power and the difficultySeparating natural and bomb-produced radiocarbon in the ocean: The potential alkalinity method M. Key Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, New Jersey, USA

167

Geothermal fluxes of alkalinity in the Narayani river system of central Nepal  

E-Print Network (OSTI)

Geothermal fluxes of alkalinity in the Narayani river system of central Nepal Matthew J. Evans hot springs flow within the steeply incised gorges of the central Nepal Himalayan front. The spring of central Nepal, Geochem. Geophys. Geosyst., 5, Q08011, doi:10.1029/2004GC000719. G 3 G 3Geochemistry

Derry, Louis A.

168

Alkaline resistant phosphate glasses and method of preparation and use thereof  

DOE Patents (OSTI)

A substantially alkaline resistant calcium-iron-phosphate (CFP) glass and methods of making and using thereof. In one application, the CFP glass is drawn into a fiber and dispersed in cement to produce glass fiber reinforced concrete (GFRC) articles having the high compressive strength of concrete with the high impact, flexural and tensile strength associated with glass fibers.

Brow, Richard K. (Rolla, MO); Reis, Signo T. (Rolla, MO); Velez, Mariano (Rolla, MO); Day, Delbert E. (Rolla, MO)

2010-01-26T23:59:59.000Z

169

Oxidative Alkaline leaching of Americium from simulated high-level nuclear waste sludges  

SciTech Connect

Oxidative alkaline leaching has been proposed to pre-treat the high-level nuclear waste sludges to remove some of the problematic (e.g., Cr) and/or non-radioactive (e.g., Na, Al) constituents before vitrification. It is critical to understand the behavior of actinides, americium and plutonium in particular, in oxidative alkaline leaching. We have studied the leaching behavior of americium from four different sludge simulants (BiPO{sub 4}, BiPO{sub 4 modified}, Redox, PUREX) using potassium permanganate and potassium persulfate in alkaline solutions. Up to 60% of americium sorbed onto the simulants is leached from the sludges by alkaline persulfate and permanganate. The percentage of americium leached increases with [NaOH] (between 1.0 and 5.0 M). The initial rate of americium leaching by potassium persulfate increases in the order BiPO{sub 4} sludge < Redox sludge < PUREX sludge. The data are most consistent with oxidation of Am{sup 3+} in the sludge to either AmO{sub 2}{sup +} or AmO{sub 2}{sup 2+} in solution. Though neither of these species is expected to exhibit long-term stability in solution, the potential for mobilization of americium from sludge samples would have to be accommodated in the design of any oxidative leaching process for real sludge samples.

Reed, Wendy A.; Garnov, Alexander Yu.; Rao, Linfeng; Nash, Kenneth L.; Bond, Andrew H.

2004-01-23T23:59:59.000Z

170

Hot alkaline treatment to stimulate and consolidate the heavy oil Bachaquero-01 sand  

E-Print Network (OSTI)

from well LL-231 from Bachaquero-01 reservoir. The sample was placed in a vertical 18 in. long aluminum cylindrical cell with an ID of 1.5 in. The top half of the cell was thermally insulated and the bottom half was cooled. The alkaline treatment (pH 11...

Valera Villarroel, Cesar Amabilis

2005-02-17T23:59:59.000Z

171

Pressure &Pressure & TemperatureTemperature  

E-Print Network (OSTI)

to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer to measure air temperature.measure air temperature.measure air temperature.measure air temperature

California at Santa Cruz, University of

172

Specific features of the temperature dependence of the conduction electron concentration in the narrow-gap and zero-gap states of Cd{sub x}Hg{sub 1-x}Te  

SciTech Connect

Results of studies of the conductivity {sigma} and the Hall coefficient R in the Cd{sub x}Hg{sub 1-x}Te crystals with x = 0.1, 0.12, 0.14, and 0.15 are analyzed in the temperature range T = 4.2-300 K and the magnetic field range B = 0.005-2.22 T. Using data on the R(B) in low and high magnetic fields and the data on {sigma}(T), electron and hole concentrations and mobilities are determined. It is shown that the electron concentration n in the studied samples is almost independent of T in the range 4.2-15 K, while as T increases, it increases according to the law n {proportional_to} T {sup r} (r > 3/2), where r = f(n, T, x). It is found that r varies from 1.7 at x = 0.1 to 3.1 at compositions with x = 0.14 and 0.15. The results for n(T) are compared with theory, taking into account nonparabolicity of the variance law for {epsilon}(T), and with the theory of impurity states in narrow-gap and zero-gap semiconductors. It is shown that the constancy of n(T) up to {approx}15 K and the strong dependence n(T) (r > 3/2) at higher temperatures are caused by the intense ionization of electrons localized at acceptor states.

Aliev, S. A.; Zulfigarov, E. I.; Selim-zade, R. I. [Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2012-03-15T23:59:59.000Z

173

Effect of Lignin Removal by Alkaline Peroxide Pretreatment on the Susceptibility of Corn Stover to Purified Cellulolytic and Xylanolytic Enzymes  

SciTech Connect

Pretreatment of corn stover with alkaline peroxide (AP) at pH 11.5 resulted in reduction of lignin content in the residual solids as a function of increasing batch temperature. Scanning electron microscopy of these materials revealed notably more textured surfaces on the plant cell walls as a result of the delignifying pretreatment. As expected, digestion of the delignified samples with commercial cellulase preparations showed an inverse relationship between the content of lignin present in the residual solids after pretreatment and the extent of both glucan and xylan conversion achievable. Digestions with purified enzymes revealed that decreased lignin content in the pretreated solids did not significantly impact the extent of glucan conversion achievable by cellulases alone. Not until purified xylanolytic activities were included with the cellulases were significant improvements in glucan conversion realized. In addition, an inverse relationship was observed between lignin content after pretreatment and the extent of xylan conversion achievable in a 24-h period with the xylanolytic enzymes in the absence of the cellulases. This observation, coupled with the direct relationship between enzymatic xylan and glucan conversion observed in a number of cases, suggests that the presence of lignins may not directly occlude cellulose present in lignocelluloses but rather impact cellulase action indirectly by its association with xylan.

Selig, M. J.; Vinzant, T. B.; Himmel, M. E.; Decker, S. R.

2009-01-01T23:59:59.000Z

174

Zirfon® as Separator Material for Water Electrolysis Under Specific Conditions  

Science Journals Connector (OSTI)

Hydrogen production through alkaline water electrolysis requires improvements to use renewable energy more...

María José Lavorante; Juan Isidro Franco…

2014-01-01T23:59:59.000Z

175

Heating System Specification Specification of Heating System  

E-Print Network (OSTI)

Appendix A Heating System Specification /* Specification of Heating System (loosely based */ requestHeat : Room ­? bool; 306 #12; APPENDIX A. HEATING SYSTEM SPECIFICATION 307 /* user inputs */ livingPattern : Room ­? behaviour; setTemp : Room ­? num; heatSwitchOn, heatSwitchOff, userReset : simple

Day, Nancy

176

Development of electrolysis-cell separator for 125/sup 0/C operation. Advanced alkaline electrolysis cell development. Final report  

SciTech Connect

This report contains the findings of a seven-month contracted effort. The major technical task involved a 125/sup 0/C operating temperature test of the 20 v/o polybenzimidazole (PBI) - 80 v/o potassium titanate (K/sub 2/TiO/sub 3/) separator in combination with the nickel-molybdenum cathode electrocatalyst system dubbed the C-AN cathode using the ARIES test system which was developed previously. The test of the PBI-K/sub 2/TiO/sub 3/ separator was only partially successful. The anticipated 1.85 (75/sup 0/C) and 1.75 volt per cell (100/sup 0/C) input requirement at 550 ma/cm/sup 2/ were surpassed slightly. The test module operated stably for about 550 hr. Although there were some mechanical difficulties with the ARIES test unit, testing at 125/sup 0/C proceeded from 745 hr on test until the test was terminated at 2318 operating hours to allow diagnostic disassembly. The input voltage degraded to a value of 1.82 volt per cell at 125/sup 0/C which is unacceptable. Diagnostic disassembly showed the PBI portion of the separator was no longer present. PBI had been shown to be stable in 123/sup 0/C, 45 w/o KOH solutions in a 1000-hr test. The attack is suggested to be attributable to a peroxide or perchlorate type oxidizer which would be unique to the electrolysis mode and probably not present in alkaline fuel cell applications. Recommendations for further testing include an evaluation of the chemical compatibility of PBI with alkaline/oxidizer solutions and endurance testing the C-AN cathode with new improved anode structures at 125/sup 0/C using asbestos separators in combination with a silicate saturated KOH electrolyte. Demonstration of the stability of this 1.65 volt per cell (90% voltage efficiency) technology at 500 ma/cm/sup 2/ will document an inexpensive and intelligent hydrogen production process which will satisfy the needs of the United States in the 1990s.

Murray, J N

1983-03-01T23:59:59.000Z

177

Electron-gas model for molecular crystals. Application to the alkali and alkaline-earth hydroxides  

Science Journals Connector (OSTI)

A theoretical model for calculating the structure and energy of molecular crystals is presented. The model, which requires no empirical parameters, is based on the Gordon-Kim electron-gas model. Many-body effects are incorporated through the mutual overlap of the electronic distributions of all molecules or ions in the neighborhood of a given point in the crystal. Effects of the crystal environment on the molecular properties are approximated by inclusion of an electrostatic potential that mimics the crystal potential in ab initio calculations on the individual component molecules or ions in the crystal. Application is made to a number of alkali and alkaline-earth hydroxide crystals in which the components are taken to be hydroxide ions, and alkali or alkaline-earth cations. The agreement with experiment is good (within 2.5% in lattice constants and 1.1% in lattice dissociation energy). The calculated changes in molecular dipole moment are between 20 and 40%.

R. LeSar and R. G. Gordon

1982-06-15T23:59:59.000Z

178

Probing the Kondo lattice model with alkaline-earth-metal atoms  

Science Journals Connector (OSTI)

We study transport properties of alkaline-earth-metal atoms governed by the Kondo lattice Hamiltonian plus a harmonic confining potential, and suggest simple dynamical probes of several different regimes of the phase diagram that can be implemented with current experimental techniques. In particular, we show how Kondo physics at strong coupling, at low density, and in the heavy fermion phase is manifest in the dipole oscillations of the conduction band upon displacement of the trap center.

Michael Foss-Feig; Michael Hermele; Ana Maria Rey

2010-05-07T23:59:59.000Z

179

Structural characteristics of alkaline phosphatase from the moderately halophilic bacterium Halomonas sp. 593  

Science Journals Connector (OSTI)

In order to clarify the structural basis of the halophilic characteristics of an alkaline phosphatase derived from the moderate halophile Halomonas sp. 593 (HaAP), the tertiary structure of HaAP was determined to 2.1 ? resolution by X-ray crystallography. The structural properties of surface negative charge and core hydrophobicity were shown to be intermediate between those characteristic of halophiles and non-halophiles, and may explain the unique functional adaptation to a wide range of salt concentrations.

Arai, S.

2014-02-22T23:59:59.000Z

180

Advances in the growth of alkaline-earth halide single crystals for scintillator detectors  

SciTech Connect

Alkaline-earth scintillators such as strontium iodide and other alkaline-earth halides activated with divalent europium represent some of the most efficient and highest energy resolution scintillators for use as gamma-ray detectors in a wide range of applications. These applications include the areas of nuclear nonproliferation, homeland security, the detection of undeclared nuclear material, nuclear physics and materials science, medical diagnostics, space physics, high energy physics, and radiation monitoring systems for first responders, police, and fire/rescue personnel. Recent advances in the growth of large single crystals of these scintillator materials hold the promise of higher crystal yields and significantly lower detector production costs. In the present work, we describe new processing protocols that, when combined with our molten salt filtration methods, have led to advances in achieving a significant reduction of cracking effects during the growth of single crystals of SrI2:Eu2+. In particular, we have found that extended pumping on the molten crystal-growth charge under vacuum for time periods extending up to 48 hours is generally beneficial in compensating for variations in the alkaline-earth halide purity and stoichiometry of the materials as initially supplied by commercial sources. These melt-pumping and processing techniques are now being applied to the purification of CaI2:Eu2+ and some mixed-anion europium-doped alkaline-earth halides prior to single-crystal growth by means of the vertical Bridgman technique. The results of initial studies of the effects of aliovalent doping of SrI2:Eu2+ on the scintillation characteristics of this material are also described.

Boatner, Lynn A [ORNL; Ramey, Joanne Oxendine [ORNL; Kolopus, James A [ORNL; Neal, John S [ORNL; Cherepy, Nerine [Lawrence Livermore National Laboratory (LLNL); Payne, Stephen A. [Lawrence Livermore National Laboratory (LLNL); Beck, P [Lawrence Livermore National Laboratory (LLNL); Burger, Arnold [Fisk University, Nashville; Rowe, E [Fisk University, Nashville; Bhattacharya, P. [Fisk University, Nashville

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Stainless steel anodes for alkaline water electrolysis and methods of making  

DOE Patents (OSTI)

The corrosion resistance of stainless steel anodes for use in alkaline water electrolysis was increased by immersion of the stainless steel anode into a caustic solution prior to electrolysis. Also disclosed herein are electrolyzers employing the so-treated stainless steel anodes. The pre-treatment process provides a stainless steel anode that has a higher corrosion resistance than an untreated stainless steel anode of the same composition.

Soloveichik, Grigorii Lev

2014-01-21T23:59:59.000Z

182

Electrochemical cell with negative active material based on an alkali or alkaline earth metal  

SciTech Connect

In an electrochemical cell the negative active material is an alkali or alkaline earth metal, such as lithium, and the electrolyte comprises a solute and at least one solvent selected from the liquid oxyhalides and which serves also as the positive active material. The electrolyte further comprises a mineral substance the effect of which is to significantly reduce the voltage rise delay of the cell.

Vallin, D.; Chenebault, P.; Grassien, J.-V.; Kerouanton, A.

1985-10-15T23:59:59.000Z

183

Investigation of the behavior of plutonium(V) in alkaline media  

SciTech Connect

The stability of the plutonium(V) oxidation state in alkaline media was studied with respect to the neighboring Pu(IV) and Pu(VI) oxidation states. Tests were conducted in 1 M or higher NaOH solutions in the presence and absence of other components of Hanford Site high-level tank waste. Spectrophotometric techniques were found to be effective in studying the behavior of plutonium(V) in alkaline solution at plutonium concentrations above 10{sup -3} M. To this end, plutonium(V) and plutonium(VI) in NaOH were prepared and their spectra characterized. In alkaline solutions with NaOH concentration below 8 M, plutonium(V) was found to be unstable to disproportionation occurring according to the reaction 2 Pu(V)(aq) {yields} Pu(VI)(aq) + Pu(IV)(s). The disproportionation of Pu(V) is complicated by at least two simultaneous processes: (1) the sorption of a significant fraction of the Pu(V) onto the forming Pu(IV) hydrous oxide precipitate, and (2) partial reduction of Pu(VI) by water {alpha}-radiolysis products.

Budantseva, N.A.; Tananaev, I.G.; Fedoseev, A.M.; Bessonov, A.A. [Russian Academy of Sciences, Moscow (Russian Federation). Institute of Physical Chemistry] [and others

1997-09-01T23:59:59.000Z

184

Ruthenium(VI) catalyzed oxidation of sodium salts of lactic, tartaric and glycolic acid by alkaline hexacyanoferrate(III)  

Science Journals Connector (OSTI)

The kinetics of ruthenium(VI) catalyzed oxidation of sodium salts of lactic, tartaric and glycolic acid by hexacyanoferrate(III) in aqueous alkaline medium have been studied at constant ionic strength. The rea...

P. Kumar; K. C. Gupta; K. Vehari

1985-01-01T23:59:59.000Z

185

A study of Mo-modified Pd/MWCNT catalysts for ethanol oxidation in the alkaline solution  

Science Journals Connector (OSTI)

The effect of the modification of Pd-based electrocatalysts by molybdenum on the catalytic performance toward ethanol oxidation in the alkaline solution is investigated. ... the poison resistance of Pd-based nano...

Weimin Chen; Yu Zhang

2014-02-01T23:59:59.000Z

186

Method of manufacturing a polymer-consolidated cadmium electrode for an alkaline storage cell, and an electrode obtained by the method  

SciTech Connect

A method is described of manufacturing a polymer-consolidated cadmium electrode for an alkaline storage cell, the method comprising the steps of: mixing the following ingredients in water: a gelling agent; cadmium and cadmium oxide in powder form constituting the active material; and a copolymer of carboxylated styrene-butadiene at a concenration lying in the range 0.5% to 3% by weight of active materials; coating the resulting paste one a metal current collector; drying the coated current collector; and subjecting the resulting assembly to a temperature lying in the range 120/sup 0/C to 150/sup 0/C for a period of a few minutes in order to cause the polymer to cross-link.

Brezillon, J.L.; Dauchier, J.M.

1987-09-01T23:59:59.000Z

187

Effects of environment and genotype on hardness and alkaline cooking properties of maize / by Troy Marc Goldstein  

E-Print Network (OSTI)

EFFECTS OF ENVIRONMENT AND GENOTYPE ON HARDNESS AND ALKALINE COOKING PROPERTIES OF MAIZE A Thesis by TROY MARC GOLDSTEIN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1983 Major Subject: Food Science and Tecnnology EFFECTS OF ENVIRONMENT AND GENOTYPE ON HARDNESS AND ALKALINE COOKING PROPERTIES OF MAIZE A Thesis TROY MARC GOLDSTEIN Approved as to style and content by: / Lloyd W. Roonev...

Goldstein, Troy Marc

2012-06-07T23:59:59.000Z

188

Geochemical and hydrogeologic evolution of alkaline discharges from abandoned coal mines  

SciTech Connect

Numerous large flow (> 2,000 l/min), historically (pre-1973) acidic, abandoned underground deep mine discharges in southwestern Pennsylvania are now alkaline in character, with circumneutral pH. Recently measured flow rates are consistent with those measured 25--30 years ago; thus the change in chemistry is not simply due to dilution by increased flows of uncontaminated water through the mines. It is likely that flooding of the mines has decreased the extent of acidity enhancing aerobic conditions, and that decades of weathering have reduced the amount of reactive pyrite. However, the mines continue to yield a sulfate-rich, Fe-contaminated (19--79 ppm) drainage. These highly alkaline discharges (up to 330 ppm as CaCO{sub 3}) are accompanied by large concentrations of sodium (up to 700 ppm) and suggest cation exchange with the associated overburden. To assess the hydrogeological conditions that result in the formation of alkaline Fe-contaminated mine discharges, the authors examined all the major discharges from a single synclinal basin. The northeast-trending Irwin synclinal coal basin encompasses 94 mi{sup 2} and was extensively mined by underground methods during the first half of this century. All major streams that arise within or cross the syncline are polluted by mine drainage that ranges from highly acidic Fe- and Al-contaminated discharges in the northern portion of the syncline to highly alkaline, iron and sulfate-contaminated discharges to the south. The hydrology of the basin is controlled by its southern plunging structure, by outcrops or drainage tunnels on the western arms of the syncline, and by several coal barriers. A first-order hydrogeologic model was constructed to evaluate ground water flow into and through the mine complexes found in the basin. The model integrates the basin geometry with structural and mine barrier components to determine groundwater flow paths and estimate residence time. Water quality is related to the cumulative proportion of up-gradient flooded and unflooded mine workings. Small discharges from unflooded, gravity-flow portions of the mined-out portion of the Pittsburgh Coal seam are highly acidic, and large artesian flows of water affected by only a short flow through flooded anoxic mine pools are moderately acidic. Those discharges subjected to increased residence time in flooded anoxic portions of the mines are increasingly alkaline. Refinement of this model could aid in prediction and hydrogeologic manipulation of these high flow Fe-contaminated discharges that are the main pollutant in many streams throughout Northern Appalachia and other coal mining areas throughout the world.

Winters, W.R.; Capo, R.C.; Wolinsky, M.A.; Weaver, T.J.; Hedin, R.S.

1999-07-01T23:59:59.000Z

189

Separation, Concentration, and Immobilization of Technetium and Iodine from Alkaline Supernate Waste  

SciTech Connect

Development of remediation technologies for the characterization, retrieval, treatment, concentration, and final disposal of radioactive and chemical tank waste stored within the Department of Energy (DOE) complex represents an enormous scientific and technological challenge. A combined total of over 90 million gallons of high-level waste (HLW) and low-level waste (LLW) are stored in 335 underground storage tanks at four different DOE sites. Roughly 98% of this waste is highly alkaline in nature and contains high concentrations of nitrate and nitrite salts along with lesser concentrations of other salts. The primary waste forms are sludge, saltcake, and liquid supernatant with the bulk of the radioactivity contained in the sludge, making it the largest source of HLW. The saltcake (liquid waste with most of the water removed) and liquid supernatant consist mainly of sodium nitrate and sodium hydroxide salts. The main radioactive constituent in the alkaline supernatant is cesium-137, but strontium-90, technetium-99, and transuranic nuclides are also present in varying concentrations. Reduction of the radioactivity below Nuclear Regulatory Commission (NRC) limits would allow the bulk of the waste to be disposed of as LLW. Because of the long half-life of technetium-99 (2.1 x 10 5 y) and the mobility of the pertechnetate ion (TcO 4 - ) in the environment, it is expected that technetium will have to be removed from the Hanford wastes prior to disposal as LLW. Also, for some of the wastes, some level of technetium removal will be required to meet LLW criteria for radioactive content. Therefore, DOE has identified a need to develop technologies for the separation and concentration of technetium-99 from LLW streams. Eichrom has responded to this DOE-identified need by demonstrating a complete flowsheet for the separation, concentration, and immobilization of technetium (and iodine) from alkaline supernatant waste.

James Harvey; Michael Gula

1998-12-07T23:59:59.000Z

190

Analysis of Microscopic Displacement Mechanisms of Alkaline Flooding for Enhanced Heavy-Oil Recovery  

Science Journals Connector (OSTI)

(8, 11, 12) Accordingly, some numerical simulations of alkaline flooding for heavy oil were conducted on the basis of the formation of W/O emulsion. ... The waterflood recovery of low-gravity, viscous crude oils was increased by caustic flooding at ?0.05-0.5 wt.% NaOH [1310-73-2], which increased recovery before water breakthrough and lowered the producing water-oil ratios during the flood. ... In this paper, a simulation technique has been developed and successfully applied to numerically simulate the exptl. ...

Haihua Pei; Guicai Zhang; Jijiang Ge; Luchao Jin; Xiaoling Liu

2011-09-04T23:59:59.000Z

191

Progress in alkaline peroxide dissolution of low-enriched uranium metal and silicide targets  

SciTech Connect

This paper reports recent progress on two alkaline peroxide dissolution processes: the dissolution of low-enriched uranium metal and silicide (U{sub 3}Si{sub 2}) targets. These processes are being developed to substitute low-enriched for high-enriched uranium in targets used for production of fission-product {sup 99}Mo. Issues that are addressed include (1) dissolution kinetics of silicide targets, (2) {sup 99}Mo lost during aluminum dissolution, (3) modeling of hydrogen peroxide consumption, (4) optimization of the uranium foil dissolution process, and (5) selection of uranium foil barrier materials. Future work associated with these two processes is also briefly discussed.

Chen, L.; Dong, D.; Buchholz, B.A.; Vandegrift, G.F. [Argonne National Lab., IL (United States). Chemical Technology Div.; Wu, D. [Univ. of Illinois, Urbana, IL (United States)

1996-12-31T23:59:59.000Z

192

Hydrophilic Electrode For An Alkaline Electrochemical Cell, And Method Of Manufacture  

DOE Patents (OSTI)

A negative electrode for an alkaline electrochemical cell. The electrode comprises an active material and a hydrophilic agent constituted by small cylindrical rods of polyolefin provided with hydrophilic groups. The mean length of the rods is less than 50 microns and the mean diameter thereof is less than 20 microns. A method of manufacturing a negative electrode in which hydrophilic rods are made by fragmenting long polyolefin fibers having a mean diameter of less than 20 microns by oxidizing them, with the rods being mixed with the active material and the mixture being applied to a current conductor.

Senyarich, Stephane (Mornac, FR); Cocciantelli, Jean-Michel (Bordeaux, FR)

2000-03-07T23:59:59.000Z

193

Liquid Fuel Production from Biomass via High Temperature Steam Electrolysis  

SciTech Connect

A process model of syngas production using high temperature electrolysis and biomass gasification is presented. Process heat from the biomass gasifier is used to heat steam for the hydrogen production via the high temperature steam electrolysis process. Hydrogen from electrolysis allows a high utilization of the biomass carbon for syngas production. Oxygen produced form the electrolysis process is used to control the oxidation rate in the oxygen-fed biomass gasifier. Based on the gasifier temperature, 94% to 95% of the carbon in the biomass becomes carbon monoxide in the syngas (carbon monoxide and hydrogen). Assuming the thermal efficiency of the power cycle for electricity generation is 50%, (as expected from GEN IV nuclear reactors), the syngas production efficiency ranges from 70% to 73% as the gasifier temperature decreases from 1900 K to 1500 K. Parametric studies of system pressure, biomass moisture content and low temperature alkaline electrolysis are also presented.

Grant L. Hawkes; Michael G. McKellar

2009-11-01T23:59:59.000Z

194

Generating Scenarios of Local Surface Temperature Using Time Series Methods  

Science Journals Connector (OSTI)

A method for creating scenarios of time series of monthly mean surface temperature at a specific site is developed. It is postulated that surface temperature can be specified as a linear combination of regional and local temperature components, ...

Robert S. Chen; Peter J. Robinson

1991-07-01T23:59:59.000Z

195

TRENDS: TEMPERATURE  

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

Historical Isotopic Temperature Record from the Vostok Ice Core Historical Isotopic Temperature Record from the Vostok Ice Core Graphics Digital Data J.R. Petit, D. Raynaud, and C. Lorius Laboratoire de Glaciogie et Géophysique de l'Environnement, CNRS, Saint Martin d'Hères Cedex, France J. Jouzel and G. Delaygue Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA/CNRS, L'Orme des Merisiers, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France N.I. Barkov Arctic and Antarctic Research Institute, Beringa Street 38, 199397 St. Petersburg, Russia V.M. Kotlyakov Institute of Geography, Staromonetny, per 29, Moscow 109017, Russia DOI: 10.3334/CDIAC/cli.006 Period of Record 420,000 years BP-present Methods Because isotopic fractions of the heavier oxygen-18 (18O) and deuterium (D) in snowfall are temperature-dependent and a strong spatial correlation

196

Potential-induced breathing model for the elastic moduli and high-pressure behavior of the cubic alkaline-earth oxides  

Science Journals Connector (OSTI)

A parameter-free model is presented for the elastic constants and high-pressure behavior of the alkaline-earth oxides MgO, CaO, SrO, and BaO. The model is based on a Gordon-Kim-type calculation for the short-range energy of a crystal. Spherically symmetric relaxation of ion charge density in response to the Madelung potential, termed potential-induced breathing (PIB), is incorporated into the model as a function of strain. This charge relaxation is accomplished by the use of a Watson-sphere calculation to obtain the interaction energy of pairs of ions as a function of both interatomic distance and Coulomb potential. By this technique many-body effects, which are particularly important for the prediction of crystal elasticity, are included. The model successfully reproduces both the sign and magnitude of the deviation (?=C12-C44) from the Cauchy relation measured at zero pressure for the cubic alkaline-earth oxides. Static compression curves calculated in both the B1 and B2 phases of these compounds are found to be within 5% of the available room-temperature data. From a calculation of the pressure dependence of the elastic moduli, the role of many-body effects at high pressure is determined. The B1-B2 phase transition pressures are calculated within the PIB model to be 251 GPa (MgO), 55 GPa (CaO), 36 GPa (SrO), and 21 GPa (BaO), in very good agreement with available experimental data for these compounds.

M. J. Mehl; R. J. Hemley; L. L. Boyer

1986-06-15T23:59:59.000Z

197

Long-Range Interacting Many-Body Systems with Alkaline-Earth-Metal Atoms  

Science Journals Connector (OSTI)

Alkaline-earth-metal atoms can exhibit long-range dipolar interactions, which are generated via the coherent exchange of photons on the P03-D13 transition of the triplet manifold. In the case of bosonic strontium, which we discuss here, this transition has a wavelength of 2.6???m and a dipole moment of 4.03 D, and there exists a magic wavelength permitting the creation of optical lattices that are identical for the states P03 and D13. This interaction enables the realization and study of mixtures of hard-core lattice bosons featuring long-range hopping, with tunable disorder and anisotropy. We derive the many-body master equation, investigate the dynamics of excitation transport, and analyze spectroscopic signatures stemming from coherent long-range interactions and collective dissipation. Our results show that lattice gases of alkaline-earth-metal atoms permit the creation of long-lived collective atomic states and constitute a simple and versatile platform for the exploration of many-body systems with long-range interactions. As such, they represent an alternative to current related efforts employing Rydberg gases, atoms with large magnetic moment, or polar molecules.

B. Olmos; D. Yu; Y. Singh; F. Schreck; K. Bongs; I. Lesanovsky

2013-04-02T23:59:59.000Z

198

Bubble Over-Potential During Two-Phase Alkaline Water Electrolysis  

Science Journals Connector (OSTI)

Abstract During two-phase water electrolysis production of bubbles at one or both electrodes is observed. This leads to a change in the electrolyser electrical and hydrodynamic properties. When gravity is present, the production of bubbles at the electrodes induces a macro-convection in the electrolyser. This leads to a local distribution of the bubbles determining the local gas void fraction and current density at the electrodes. The absence of gravity eliminates the natural convection and buoyancy forces and consequently the frictional forces. It is generally difficult to estimate the quantitative influence of each of these single phenomena due to strong coupling. In the present work, alkaline water electrolysis is performed. The formation of gas bubbles at the anode is observed using four cameras. The aim of this study is to establish the quantitative evolution laws for the electrochemical cell potential, the bubble diameter and population density during alkaline (NaOH) two-phase electrolysis in function of the two explored inputs current density and gravity.

Philippe Mandin; Zine Derhoumi; Hervé Roustan; Wüthrich Rolf

2014-01-01T23:59:59.000Z

199

A new N-hydroxyethyliminodiacetic acid modified core–shell silica phase for chelation ion chromatography of alkaline earth, transition and rare earth elements  

Science Journals Connector (OSTI)

Abstract Bare core–shell silica (1.7 ?m) has been modified with iminodiacetic acid functional groups via standard silane chemistry, forming a new N-hydroxyethyliminodiacetic acid (HEIDA) functionalised core–shell stationary phase. The column was applied in high-performance chelation ion chromatography and evaluated for the retention of alkaline earth, transition and heavy metal cations. The influence of nitric acid eluent concentration, addition of complexing agent dipicolinic acid, eluent pH and column temperature on the column performance was investigated. The efficiencies obtained for transition and heavy metal cations (and resultant separations) were comparable or better than those previously obtained for alternative fully porous silica based chelation stationary phases, and a similarly modified monolithic silica column, ranging from ?15 to 56 ?m HETP. Increasing the ionic strength of the eluent with the addition of KNO3 (0.75 M) and increasing the column temperature (70 °C) facilitated the isocratic separation of a mixture of 14 lanthanides and yttrium in under 12 min, with HETP averaging 18 ?m (7 ?m for Ce(III))

Nicola McGillicuddy; Ekaterina P. Nesterenko; Pavel N. Nesterenko; Elaine M. Stack; Jesse O. Omamogho; Jeremy D. Glennon; Brett Paull

2013-01-01T23:59:59.000Z

200

Specific Heat of Disordered 3He  

SciTech Connect

Porous aerogel is a source of elastic scattering in superfluid 3He and modifies the properties of the superfluid, suppressing the transition temperature and order parameter. The specific heat jumps for the B-phase of superfluid 3He in aerogel have been measured as a function of pressure and interpreted using the homogeneous and inhomogeneous isotropic scattering models. The specific heat jumps for others p-wave states are estimated for comparison.

Choi, H.; Davis, J. P.; Pollanen, J.; Halperin, W. P. [Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208 (United States); Mulders, N. [Department of Physics and Astronomy, University of Delaware, Newark, DE 19716 (United States)

2006-09-07T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Beamline Temperatures  

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

Temperatures Temperatures Energy: 3.0000 GeV Current: 493.2242 mA Date: 11-Jan-2014 21:40:00 Beamline Temperatures Energy 3.0000 GeV Current 493.2 mA 11-Jan-2014 21:40:00 LN:MainTankLevel 124.4 in LN:MainTankPress 56.9 psi SPEAR-BL:B120HeFlow 15.4 l/min SPEAR-BL:B131HeFlow 22.2 l/min BL 4 BL02:LCW 0.0 ℃ BL02:M0_LCW 31.5 ℃ BL 4-1 BL04-1:BasePlate -14.0 ℃ BL04-1:Bottom1 46.0 ℃ BL04-1:Bottom2 47.0 ℃ BL04-1:Lower 32.0 ℃ BL04-1:Moly 46.0 ℃ BL04-1:ChinGuard1 31.0 ℃ BL04-1:ChinGuard2 31.0 ℃ BL04-1:FirstXtalA -167.0 ℃ BL04-1:FirstXtalB -172.0 ℃ BL04-1:Pad1 31.0 ℃ BL04-1:Pad2 31.0 ℃ BL04-1:SecondXtalA -177.0 ℃ BL04-1:SecondXtalB -175.0 ℃ BL 4-2 BL04-2:BasePlate -14.0 ℃ BL04-2:Bottom1 24.0 ℃ BL04-2:Bottom2 25.0 ℃

202

Ab initio valence-bond cluster model for ionic solids: Alkaline-earth oxides  

Science Journals Connector (OSTI)

A linear M-O-M (M=metal, O=oxygen) cluster embedded in a Madelung field, and also including the quantum effects of the neighboring ions, is used to represent the alkaline-earth oxides. For this model an ab initio wave function is constructed as a linear combination of Slater determinants written in an atomic orbital basis set, i.e., a valence-bond wave function. Each valence-bond determinant (or group of determinants) corresponds to a resonating valence-bond structure. We have obtained ab initio valence-bond cluster-model wave functions for the electronic ground state and the excited states involved in the optical-gap transitions. Numerical results are reasonably close to the experimental values. Moreover, the model contains the ionic model as a limiting case and can be readily extended and improved.

A. Lorda; F. Illas; J. Rubio; J. B. Torrance

1993-03-15T23:59:59.000Z

203

Review and assessment of technologies for the separation of strontium from alkaline and acidic media  

SciTech Connect

A literature survey has been conducted to identify and evaluate methods for the separation of strontium from acidic and alkaline media as applied to Hanford tank waste. The most promising methods of solvent extraction, precipitation, and ion exchange are described. The following criteria were used for evaluating the separation methods: Appreciable strontium removal must be demonstrated; Strontium selectivity over bulk components must be demonstrated; The method must show promise for evolving into a practical and fairly simple process; The process should be safe to operate; The method must be robust (i.e., capable of separating strontium from various waste types); Secondary waste generation must be minimized; and The method must show resistance to radiation damage. The methods discussed did not necessarily satisfy all of the above criteria; thus, key areas requiring further development are also given for each method. Less promising solvent extraction, precipitation, and ion exchange methods were also identified; areas for potential development are included in this report.

Orth, R.J.; Kurath, D.E.

1994-01-01T23:59:59.000Z

204

Parity violating radiative emission of neutrino pair in heavy alkaline earth atoms of even isotopes  

E-Print Network (OSTI)

Metastable excited states ${}^3P_2, {}^3P_0$ of heavy alkaline earth atoms of even isotopes are studied for parity violating (PV) effects in radiative emission of neutrino pair (RENP). PV terms arise from interference between two diagrams containing neutrino pair emission of valence spin current and nuclear electroweak charge density proportional to the number of neutrons in nucleus. This mechanism gives large PV effects, since it does not suffer from the suppression of 1/(electron mass) usually present for non-relativistic atomic electrons. A controllable magnetic field is crucial to identify RENP process by measuring PV observables. Results of PV asymmetries under the magnetic field reversal and the photon circular polarization reversal are presented for an example of Yb atom.

M. Yoshimura; N. Sasao; S. Uetake

2014-03-26T23:59:59.000Z

205

Anodic oxidation of ethylenediaminetetraacetic acid on platinum electrode in alkaline medium  

SciTech Connect

Ethylenediaminetetraacetic acid (EDTA) forms strong metal complexes and is often used to remove scale from heat-transfer equipment and to decontaminate equipment exposed to radioactive material. However, the resultant waste in the form of EDTA-metal complex is hard to treat due to the high stability of such complexes. The anodic oxidation of ethylenediaminetetraacetic acid (EDTA) was studied in alkaline medium on a smooth platinum electrode. Bulk electrolysis indicated that stable organic intermediates (formaldehyde and glyoxal) are formed during the oxidation of EDTA and that complete oxidation to CO{sub 2} can be achieved. The proposed pathway suggests that the acetate groups in EDTA are initially oxidized, generating formaldehyde and ethylenediamine. The rest potential of EDTA (0.066 to 0.164 V vs. Hg/HgO) was observed to be higher than for other organic species. In alkaline medium, very little EDTA oxidation was found to occur on bare platinum. Limiting-current behavior due to PtO formation was observed immediately positive of the rest potential. Tafel behavior (Tafel slope 120 mV/dec) was observed in the potential region positive of the cessation of the bulk of oxide film formation and negative of the onset of O{sub 2} evolution. The reaction order of EDTA was determined to be {approximately}0.5, and that of OH{sup {minus}} was close to zero. The reaction mechanism consistent with the experimental data involves Temkin-type adsorption and a first-electron-transfer rate-determining step.

Pakalapati, S.N.R.; Popov, B.N.; White, R.E. [Univ. of South Carolina, Columbia, SC (United States). Dept. of Chemical Engineering

1996-05-01T23:59:59.000Z

206

Harnessing Genetic Diversity in Saccharomyces cerevisiae for Fermentation of Xylose in Hydrolysates of Alkaline Hydrogen Peroxide-Pretreated Biomass  

Science Journals Connector (OSTI)

...have been well covered in the literature (23, 26 - 34). Alkaline...funded by the DOE Great Lakes Bioenergy Research Center (DOE BER...lignocellulosic ethanol-a review. Appl. Biochem. Biotechnol...in batch reactors. Biomass Bioenergy 32 :1353-1358. doi: 10...

Trey K. Sato; Tongjun Liu; Lucas S. Parreiras; Daniel L. Williams; Dana J. Wohlbach; Benjamin D. Bice; Irene M. Ong; Rebecca J. Breuer; Li Qin; Donald Busalacchi; Shweta Deshpande; Chris Daum; Audrey P. Gasch; David B. Hodge

2013-11-08T23:59:59.000Z

207

Redesigning specificity in miniproteins  

E-Print Network (OSTI)

This work focuses on designing specific miniprotein interactions using computational models and then testing these designs with experiments. Miniproteins are small, autonomously-folding proteins that are excellent for ...

Taylor, Christina Marie

2006-01-01T23:59:59.000Z

208

Specific light in sculpture  

E-Print Network (OSTI)

Specific light is defined as light from artificial or altered natural sources. The use and manipulation of light in three dimensional sculptural work is discussed in an historic and contemporary context. The author's work ...

Powell, John William

1989-01-01T23:59:59.000Z

209

NOVEL REFRACTORY MATERIALS FOR HIGH ALKALI, HIGH TEMPERATURE ENVIRONMENTS  

SciTech Connect

Refractory materials can be limited in their application by many factors including chemical reactions between the service environment and the refractory material, mechanical degradation of the refractory material by the service environment, temperature limitations on the use of a particular refractory material, and the inability to install or repair the refractory material in a cost effective manner or while the vessel was in service. The objective of this project was to address the need for new innovative refractory compositions by developing a family of novel MgO-Al 2O3 spinel or other similar magnesia/alumina containing unshaped refractory composition (castables, gunnables, shotcretes, etc) utilizing new aggregate materials, bond systems, protective coatings, and phase formation techniques (in-situ phase formation, altered conversion temperatures, accelerated reactions, etc). This family of refractory compositions would then be tailored for use in high-temperature, high-alkaline industrial environments like those found in the aluminum, chemical, forest products, glass, and steel industries.

Hemrick, James Gordon [ORNL

2011-09-01T23:59:59.000Z

210

High Temperatures & Electricity Demand  

E-Print Network (OSTI)

High Temperatures & Electricity Demand An Assessment of Supply Adequacy in California Trends.......................................................................................................1 HIGH TEMPERATURES AND ELECTRICITY DEMAND.....................................................................................................................7 SECTION I: HIGH TEMPERATURES AND ELECTRICITY DEMAND ..........................9 BACKGROUND

211

Specific Group Hardware  

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

Specific Group Hardware Specific Group Hardware Specific Group Hardware ALICE palicevo1 The Virtual Organization (VO) server. Serves as gatekeeper for ALICE jobs. It's duties include getting assignments from ALICE file catalog (at CERN), submitting jobs to pdsfgrid (via condor) which submits jobs to the compute nodes, monitoring the cluster work load, and uploading job information to ALICE file catalog. It is monitored with MonALISA (the monitoring page is here). It's made up of 2 Intel Xeon E5520 processors each with 4 cores (16 virtual cores with hyperthreading). The total local disk space is 1.9 TB. It is running Scientific Linux SL release 5.5 (Boron) and is disk booted. It is in rack 17. palicevo2 The Virtual Organization (VO) server testbed. It's a Dell PowerEdge R410 with 2 Intel Xeon E5520 processors, each with 4 cores (16 virtual cores

212

Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation of Sodium Salts  

SciTech Connect

The purpose of this research involving collaboration between Oak Ridge National Laboratory (ORNL) and Pacific Northwest National Laboratory (PNNL) is to explore new approaches to the separation of sodium hydroxide, sodium nitrate, and other sodium salts from high-level alkaline tank waste. The principal potential benefit is a major reduction in disposed waste volume, obviating the building of expensive new waste tanks and reducing the costs of vitrification. Principles of ion recognition are being researched toward discovery of liquid-liquid extraction systems that selectively separate sodium hydroxide and sodium nitrate from other waste components. The successful concept of pseudo hydroxide extraction using fluorinated alcohols and phenols is being developed at ORNL and PNNL toward a greater understanding of the controlling equilibria, role of solvation, and of synergistic effects involving crown ethers. Synthesis efforts are being directed toward enhanced sodium binding by crown ethers, both neutral and proton-ionizable. Studies with real tank waste at PNNL will provide feedback toward solvent compositions that have promising properties.

Moyer, Bruce A.; Bonnesen, Peter V.; Custelcean, Radu; Delmau, Laetitia H.; Engle, Nancy L.; Kang, Hyun-Ah; Keever, Tamara J.; Marchand, Alan P.; Gadthula, Srinivas; Gore, Vinayak K.; Huang, Zilin; Sivappa, Rasapalli; Tirunahari, Pavan K.; Levitskaia, Tatiana G.; Lumetta, Gregg J.

2005-09-26T23:59:59.000Z

213

Electrochemical investigations on amorphous Fe-base alloys for alkaline water electrolysis  

Science Journals Connector (OSTI)

Abstract In this work different amorphous melt-spun Fe-alloys (Fe82B18, Fe80Si10B10, Fe60Co20Si10B10) were investigated as cathode materials for the alkaline electrolysis of water. In particular, the influence of cobalt as well as the metalloids boron and silicon on the activity for the hydrogen evolution reaction (HER) was studied in 1 M KOH at 298 K using cyclic voltammetric, galvanostatic and polarization techniques. The electrocatalytic activity was evaluated in the view of the overpotential. It was found that cyclic voltammetric techniques can be used to activate the melt-spun Fe-alloys strongly. Different cyclic voltammetric activation procedures are discussed and the influence of the sweep rate and the potential window on the HER activity was elucidated. The experimental data indicate that the addition of metalloids and, most importantly, of cobalt improves the HER activity of the materials. Thus, the overpotential can be reduced by 200 mV compared to polycrystalline Ni.

Christian Immanuel Müller; Thomas Rauscher; Andreas Schmidt; Thomas Schubert; Thomas Weißgärber; Bernd Kieback; Lars Röntzsch

2014-01-01T23:59:59.000Z

214

Palladium and Tin Alloyed Catalysts for the Ethanol Oxidation Reaction in an Alkaline Medium  

SciTech Connect

In this paper, we present a study of a series of carbon-supported Pd-Sn binary alloyed catalysts prepared through a modified Polyol method as anode electrocatalysts for direct ethanol fuel cell reactions in an alkaline medium. Transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and aberration-corrected scanning transmission electron microscopy equipped with electron energy loss spectroscopy were used to characterize the Pd-Sn/C catalysts, where homogeneous Pd-Sn alloys were determined to be present with the surface Sn being partially oxidized. Among various Pd-Sn catalysts, Pd{sub 86}Sn{sub 14}/C catalysts showed much enhanced current densities in cyclic voltammetric and chronoamperometric measurements, compared to commercial Pd/C (Johnson Matthey). The overall rate law of ethanol oxidation reaction for both Pd{sub 86}Sn{sub 14}/C and commercial Pd/C were also determined, which clearly showed that Pd{sub 86}Sn{sub 14}/C was more favorable in high ethanol concentration and/or high pH environment. Density functional theory calculations also confirmed Pd-Sn alloy structures would result in lower reaction energies for the dehydrogenation of ethanol, compared to the pure Pd crystal.

Su D.; Du W.; Mackenzie K.E.; Milano D.F.; Deskins N.A.; Teng X.

2012-02-01T23:59:59.000Z

215

Assessment of commercially available ion exchange materials for cesium removal from highly alkaline wastes  

SciTech Connect

Approximately 61 million gallons of nuclear waste generated in plutonium production, radionuclide removal campaigns, and research and development activities is stored on the Department of Energy`s Hanford Site, near Richland, Washington. Although the pretreatment process and disposal requirements are still being defined, most pretreatment scenarios include removal of cesium from the aqueous streams. In many cases, after cesium is removed, the dissolved salt cakes and supernates can be disposed of as LLW. Ion exchange has been a leading candidate for this separation. Ion exchange systems have the advantage of simplicity of equipment and operation and provide many theoretical stages in a small space. The organic ion exchange material Duolite{trademark} CS-100 has been selected as the baseline exchanger for conceptual design of the Initial Pretreatment Module (IPM). Use of CS-100 was chosen because it is considered a conservative, technologically feasible approach. During FY 96, final resin down-selection will occur for IPM Title 1 design. Alternate ion exchange materials for cesium exchange will be considered at that time. The purpose of this report is to conduct a search for commercially available ion exchange materials which could potentially replace CS-100. This report will provide where possible a comparison of these resin in their ability to remove low concentrations of cesium from highly alkaline solutions. Materials which show promise can be studied further, while less encouraging resins can be eliminated from consideration.

Brooks, K.P.; Kim, A.Y.; Kurath, D.E.

1996-04-01T23:59:59.000Z

216

Electrochemical oxidation of Mn(OH){sub 2} in alkaline media  

SciTech Connect

Redox transformations of the Mn(II)/Mn(III) and Mn(II)/Mn(IV) pairs have been studied by transient electrochemical, spectroelectrochemical, and impedance measurements in alkaline solutions at a manganese electrode. The Mn(0)/Mn(II) and Mn(II)/Mn(III) pairs, which have not been clearly identified hitherto in the literature, have been observed using these techniques. A species observed at 285 nm during oxidation of the Mn(OH){sub 2}-covered manganese electrode was assigned to MnOOH. This species eventually led to passive films whose major component is MnO{sub 2} absorbing at about 400 nm. An accumulation of the passive films was observed at longer electrolysis times. Electrochemical impedance measurements were used to construct a Tafel plot for the manganese oxidation. The polarization resistance reached a minimum at about + 0.17 V vs Ag{vert_bar}AgCl (saturated KCl) without oxygen evolution. Some kinetic information including resistance-capacitance time constants for the oxidation reaction and an exchange current density are also reported.

Cha, D.K. [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Chemistry; Park, S.M. [Pohang Univ. of Science and Technology (Korea, Republic of)

1997-08-01T23:59:59.000Z

217

Mold, flow, and economic considerations in high temperature precision casting  

E-Print Network (OSTI)

Casting high temperature alloys that solidify through a noticeable two phase region, specifically platinum-ruthenium alloys, is a particularly challenging task due to their high melting temperature and this necessitates ...

Humbert, Matthew S

2013-01-01T23:59:59.000Z

218

Construction of an ultra-low temperature scanning tunneling microscope  

Science Journals Connector (OSTI)

We describe designs and specifications of an ultra-low temperature scanning tunneling microscope developed at ... works over a wide temperature range between 90 mK and 300 K with atomic resolution as...

Hiroshi Fukuyama; Hiroki Tan; Tetsuya Handa…

1996-01-01T23:59:59.000Z

219

IDC System Specification Document.  

SciTech Connect

This document contains the system specifications derived to satisfy the system requirements found in the IDC System Requirements Document for the IDC Reengineering Phase 2 project. Revisions Version Date Author/Team Revision Description Authorized by V1.0 12/2014 IDC Reengineering Project Team Initial delivery M. Harris

Clifford, David J.

2014-12-01T23:59:59.000Z

220

Understanding Operational Amplifier Specifications  

E-Print Network (OSTI)

are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters are the property of their respective owners. #12;CONTACT INFORMATION INTERNET www.ti.com Register with TI INFORMATION CENTERS US TMS320 Hotline (281) 274-2320 Fax (281) 274-2324 BBS (281) 274-2323 email dsph

Jones, R. Victor

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Innovative Carbon Dioxide Sequestration from Flue Gas Using an In-Duct Scrubber Coupled with Alkaline Clay Mineralization  

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

Innovative Carbon Dioxide Sequestration Innovative Carbon Dioxide Sequestration from Flue Gas Using an In-Duct Scrubber Coupled with Alkaline Clay Mineralization Background The United States Department of Energy (DOE) is leading an effort to find novel approaches to reduce carbon dioxide (CO 2 ) emissions from industrial sources. The Industrial Carbon Capture and Sequestration (ICCS) program is funded by the American Recovery and Reinvestment Act (ARRA) to encourage development of processes that

222

Molten metal reactor and method of forming hydrogen, carbon monoxide and carbon dioxide using the molten alkaline metal reactor  

DOE Patents (OSTI)

A molten metal reactor for converting a carbon material and steam into a gas comprising hydrogen, carbon monoxide, and carbon dioxide is disclosed. The reactor includes an interior crucible having a portion contained within an exterior crucible. The interior crucible includes an inlet and an outlet; the outlet leads to the exterior crucible and may comprise a diffuser. The exterior crucible may contain a molten alkaline metal compound. Contained between the exterior crucible and the interior crucible is at least one baffle.

Bingham, Dennis N.; Klingler, Kerry M.; Turner, Terry D.; Wilding, Bruce M.

2012-11-13T23:59:59.000Z

223

Integrating Terminal Truncation and Oligopeptide Fusion for a Novel Protein Engineering Strategy To Improve Specific Activity and Catalytic Efficiency: Alkaline ?-Amylase as a Case Study  

Science Journals Connector (OSTI)

...Engineering Laboratory for Cereal Fermentation Technology...medium was used for the seed culture of E. coli on...were screened on corn starch and agar plates. After...Km , maximum rate of metabolism [V max], k cat, and...16 U/ml and soluble starch at concentrations ranging...

Haiquan Yang; Long Liu; Hyun-dong Shin; Rachel R. Chen; Jianghua Li; Guocheng Du; Jian Chen

2013-08-16T23:59:59.000Z

224

Specifications for thesaurus software  

Science Journals Connector (OSTI)

Specifications are presented for software designed to support manual development and maintenance of information retrieval thesauri. The specifications are intended to support both evaluation of existing packages for acquisition and design of custom software. Specialized requirements of thesaurus support are emphasized over more general database management requirements. Requirements for integration with larger systems and for the user interface are summarized. Relationships specified by the ANSI standard should be supported, and the relationships should be validated to avoid introduction of conflicting relationships. Flexibility in availability of note and date fields is important, and where required, term classifications should be available. Maintenance procedures should include provision for feedback on the impact of changes, as well as appropriate levels of approval for changes. A wide variety of online displays and printed reports are required, including but not limited to alphabetical, hierarchical, and rotated. In addition, it is desirable to be able to search the thesaurus database with such capabilities as Boolean logic and proximity operators.

Jessica L. Milstead

1991-01-01T23:59:59.000Z

225

Quantum magnetism in ultracold alkali and alkaline-earth fermion systems with symplectic symmetry  

Science Journals Connector (OSTI)

We numerically study the quantum magnetism of ultracold alkali and alkaline-earth fermion systems with large hyperfine spin F=32, which are characterized by a generic Sp(N) symmetry with N=4. The methods of exact diagonalization (ED) and density matrix renormalization group are employed for the large size one-dimensional (1D) systems, and the ED method is applied to a two-dimensional (2D) square lattice on small sizes. We focus on the magnetic exchange models in the Mott-insulating state at quarter-filling. Both 1D and 2D systems exhibit rich phase diagrams depending on the ratio between the spin exchanges J0 and J2 in the bond spin singlet and quintet channels, respectively. In one dimension, the ground states exhibit a long-range-ordered dimerization with a finite spin gap at J0/J2>1 and a gapless spin-liquid state at J0/J2?1, respectively. In the former and latter cases, the correlation functions exhibit the two-site and four-site periodicities, respectively. In two-dimensions, various spin-correlation functions are calculated up to the size of 4×4. The Néel-type spin correlation dominates at large values of J0/J2, while a 2×2 plaquette correlation is prominent at small values of this ratio. Between them, a columnar spin-Peierls dimerization correlation peaks. We infer the competition among the plaquette ordering, the dimer ordering, and the Néel ordering in the 2D system.

Hsiang-Hsuan Hung; Yupeng Wang; Congjun Wu

2011-08-02T23:59:59.000Z

226

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

Science Journals Connector (OSTI)

Olivine mineral replacement by serpentine is one major alteration reaction of oceanic hydrothermalism. In the present experimental study, olivine grains were replaced by chrysotile and brucite under high alkaline conditions. In our study, olivine replacement implied a spatial and temporal coupling of dissolution and precipitation reactions at the interface between olivine and chrysotile–brucite minerals. Coupled dissolution–precipitation led to the alteration of starting olivine grains (so-called primary or parent mineral) to a porous mineral assemblage of chrysotile and brucite with preservation of the initial olivine morphology. This mineral replacement reaction of olivine (serpentinization) has been characterized using XRD, FESEM and FTIR measurements. Moreover, a simple and novel method is here proposed to quantify the mineral replacement rate (or serpentinization rate) of olivine using thermogravimetric (TG) and differential TG (DTG) analyses. Serpentinization extent depends on the grain size: it is complete after 30 days of reaction for the smallest olivine grains (<30 ?m), after 90 days of reaction for the intermediate olivine grains (30 ?m–56 ?m). For the largest fraction (56–150 ?m), 55% of serpentinization extent was reached after 90 days. Based on the fitting of the serpentinization extent (?t) versus time (t) using a kinetic pseudo-second-order model, the serpentinization rates vary from 3.6×10?6 s?1 to 1.4×10?7 s?1 depending on the olivine grain size. An additional correlation between FTIR spectra analysis and TG measurements is proposed. The mineral replacement reactions frequently observed in natural alteration processes could be a powerful synthesis route to design new porous and/or nanostructured materials.

Romain Lafay; German Montes-Hernandez; Emilie Janots; Rodica Chiriac; Nathaniel Findling; Francois Toche

2012-01-01T23:59:59.000Z

227

Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation of Sodium Salts  

SciTech Connect

In this project, now completing its third year of its second renewal period, a collaborative project involving Oak Ridge National Laboratory, Pacific Northwest National Laboratory, and the University of North Texas has been addressing outstanding questions regarding the separation of the bulk sodium constituents of alkaline tank waste. The principal potential benefit of this research is a major reduction in the volume of radioactive tank waste, obviating the building of expensive new tanks and reducing the costs of vitrification. As a general approach, principles of ion recognition are being explored toward discovery and basic understanding of liquid-liquid extraction systems that selectively separate sodium hydroxide and sodium salts from waste-like matrices. Questions being addressed pertain to applicable extraction equilibria and how extraction properties relate to extractant structure. Progress has included the elucidation of the promising concept of pseudo hydroxide extraction (PHE), demonstration of crown-ether synergized PHE, demonstration of combined sodium hydroxide/sodium nitrate separation, and synthesis of novel ditopic receptors for ditopic PHE. In future efforts (pending renewal), a thermochemical study of PHE relating extractant acidity to extraction strength is proposed, and this study will be extended to systems containing crown ethers, including proton-ionizable ones. A series of crown ethers will be synthesized for this purpose and to investigate the extraction of bulk sodium salts (e.g., nitrate, nitrite, and sulfate), possibly in combination with sodium hydroxide. Simple proof-of-principle tests with real tank waste at PNNL will provide feedback toward solvent designs that have desirable properties. In view of the upcoming milestone of completion of the second renewal period, this report will, in addition to providing a summary of the past year's progress, summarize all of the work completed since the start of this project.

Moyer, Bruce A.; Marchand, Alan P.; Lumetta, Gregg J.

2004-06-30T23:59:59.000Z

228

Evaluating the effect of surface modifications on Ni based electrodes for alkaline water electrolysis  

Science Journals Connector (OSTI)

Abstract In an effort to improve the efficiency of alkaline water electrolysis for hydrogen production, surface modifications to Ni based electrodes were made by means of mechanical polishing using sandpapers of different sand grain sizes and chemical coating using electrochemical deposition of Ni and Co. The hydrogen evolution reaction was studied to reveal and compare the apparent and intrinsic activities of the electrodes, as indicated by the Tafel curves based on the geometric surface area and effective surface area, respectively. A relative roughness factor, which was estimated from the double layer capacitance in the impedance measurement, was introduced to characterise the effective surface area. The relative roughness factor of the six modified electrodes varied from 3.3 to 5.6. The electrode polished with the P400 sandpaper achieved the best apparent activity by possessing the lowest overpotential of 422 mV at the current density of 750 A m?2. For electrodes modified by the mechanical polishing, the Tafel curves collapsed into a narrow band when the current density was divided by the relative roughness factor, which validated the method of using the relative roughness factor for quantifying the effective surface area. The intrinsic activity of the hydrogen evolution reaction on Ni electrode can be expressed as ? = 0.02 + 0.191·Log(j?), where j? is the current density based on the effective surface area. For the electrodes modified by electrochemical depositions of Ni and Co, a variation in the intrinsic activity was observed for the different electrodes. This was attributed to their surface composition differences.

Kai Zeng; Dongke Zhang

2014-01-01T23:59:59.000Z

229

Americium/Lanthanide Separations in Alkaline Solutions for Advanced Nuclear Fuel Cycles  

SciTech Connect

Project goals: Can used nuclear fuel be partitioned by dissolution in alkaline aqueous solution to give a solution of uranium, neptunium, plutonium, americium and curium and a filterable solid containing nearly all of the lanthanide fission products and certain other fission products? What is the chemistry of Am/Cm/Ln in oxidative carbonate solutions? Can higher oxidation states of Am be stabilized and exploited? Conclusions: Am(VI) is kinetically stable in 0.5-2.0 M carbonate solutions for hours. Aliquat 336 in toluene has been successfully shown to extract U(VI) and Pu(VI) from carbonate solutions. (Stepanov et al 2011). Higher carbonate concentration gives lower D, SF{sub U/Eu} for = 4 in 1 M K{sub 2}CO{sub 3}. Experiments with Am(VI) were unsuccessful due to reduction by the organics. Multiple sources of reducing organics...more optimization. Reduction experiments of Am(VI) in dodecane/octanol/Aliquat 336 show that after 5 minutes of contact, only 30-40% of the Am(VI) has been reduced. Long enough to perform an extraction. Shorter contact times, lower T, and lower Aliquat 336 concentration still did not result in any significant extraction of Am. Anion exchange experiments using a strong base anion exchanger show uptake of U(VI) with minimal uptake of Nd(III). Experiments with Am(VI) indicate Am sorption with a Kd of 9 (10 minute contact) but sorption mechanism is not yet understood. SF{sub U/Nd} for = 7 and SF{sub U/Eu} for = 19 after 24 hours in 1 M K{sub 2}CO{sub 3}.

Goff, George S. [Los Alamos National Laboratory; Long, Kristy Marie [Los Alamos National Laboratory; Reilly, Sean D. [Los Alamos National Laboratory; Jarvinen, Gordon D. [Los Alamos National Laboratory; Runde, Wolfgang H. [Los Alamos National Laboratory

2012-06-11T23:59:59.000Z

230

Monte Carlo simulations of electron thermalization in alkali iodide and alkaline-earth fluoride scintillators  

SciTech Connect

A Monte Carlo model of electron thermalization in inorganic scintillators, which was developed and applied to CsI in a previous publication [Wang et al., J. Appl. Phys. 110, 064903 (2011)], is extended to another material of the alkali halide class, NaI, and to two materials from the alkaline-earth halide class, CaF{sub 2} and BaF{sub 2}. This model includes electron scattering with both longitudinal optical (LO) and acoustic phonons as well as the effects of internal electric fields. For the four pure materials, a significant fraction of the electrons recombine with self-trapped holes and the thermalization distance distributions of the electrons that do not recombine peak between approximately 25 and 50 nm and extend up to a few hundreds of nanometers. The thermalization time distributions of CaF{sub 2}, BaF{sub 2}, NaI, and CsI extend to approximately 0.5, 1, 2, and 7 ps, respectively. The simulations show that the LO phonon energy is a key factor that affects the electron thermalization process. Indeed, the higher the LO phonon energy is, the shorter the thermalization time and distance are. The thermalization time and distance distributions show no dependence on the incident {gamma}-ray energy. The four materials also show different extents of electron-hole pair recombination due mostly to differences in their electron mean free paths (MFPs), LO phonon energies, initial densities of electron-hole pairs, and static dielectric constants. The effect of thallium doping is also investigated for CsI and NaI as these materials are often doped with activators. Comparison between CsI and NaI shows that both the larger size of Cs{sup +} relative to Na{sup +}, i.e., the greater atomic density of NaI, and the longer electron mean free path in NaI compared to CsI contribute to an increased probability for electron trapping at Tl sites in NaI versus CsI.

Wang Zhiguo; Gao Fei; Kerisit, Sebastien [Fundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States); Xie Yulong [Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States); Campbell, Luke W. [National Security Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)

2012-07-01T23:59:59.000Z

231

Monte Carlo simulations of electron thermalization in alkali iodide and alkaline-earth fluoride scintillators  

SciTech Connect

A Monte Carlo model of electron thermalization in inorganic scintillators, which was developed and applied to CsI in a previous publication [Wang et al., J. Appl. Phys. 110, 064903 (2011)], is extended to another material of the alkali halide class, NaI, and to two materials from the alkaline-earth halide class, CaF2 and BaF2. This model includes electron scattering with both longitudinal optical (LO) and acoustic phonons as well as the effects of internal electric fields. For the four pure materials, a significant fraction of the electrons recombine with self-trapped holes and the thermalization distance distributions of the electrons that do not recombine peak between approximately 25 and 50 {per_thousand}nm and extend up to a few hundreds of nanometers. The thermalization time distributions of CaF2, BaF2, NaI, and CsI extend to approximately 0.5, 1, 2, and 7 ps, respectively. The simulations show that the LO phonon energy is a key factor that affects the electron thermalization process. Indeed, the higher the LO phonon energy is, the shorter the thermalization time and distance are. The thermalization time and distance distributions show no dependence on the incident {gamma}-ray energy. The four materials also show different extents of electron-hole pair recombination due mostly to differences in their electron mean free paths (MFPs), LO phonon energies, initial densities of electron-hole pairs, and static dielectric constants. The effect of thallium doping is also investigated for CsI and NaI as these materials are often doped with activators. Comparison between CsI and NaI shows that both the larger size of Cs+ relative to Na+, i.e., the greater atomic density of NaI, and the longer electron mean free path in NaI compared to CsI contribute to an increased probability for electron trapping at Tl sites in NaI versus CsI.

Wang, Zhiguo; Xie, YuLong; Campbell, Luke W.; Gao, Fei; Kerisit, Sebastien N.

2012-07-01T23:59:59.000Z

232

Extraction Utility Design Specification  

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

Extraction Extraction Utility Design Specification May 13, 2013 Document Version 1.10 1 Revision History Date Version Section and Titles Author Summary of Change January 15, 2010 1.0 All Eric Morgan, Dekker, Ltd. Initial Draft Document January 19, 2010 1.1 All Igor Pedan, Dekker, Ltd. Document update with EM team review notes January 20, 2010 1.2 2.1.1 EM Project Team Document Review January 27, 2010 1.3 All Bruce Bartells Final Draft Review May 10, 2010 1.4.1 2.8 Igor Pedan, Dekker, Ltd. Section Update May 14, 2010 1.4.2 2.3.1 Igor Pedan, Dekker, Ltd. System Tables Added May 17, 2010 1.4.3 2.3 Igor Pedan, Dekker, Ltd. Enhancements Update June 29, 2010 1.5 All Igor Pedan, Dekker, Ltd. Revised for Version

233

Recovery of manganese oxides from spent alkaline and zinc–carbon batteries. An application as catalysts for VOCs elimination  

SciTech Connect

Highlights: • Manganese oxides were synthesized using spent batteries as raw materials. • Spent alkaline and zinc–carbon size AA batteries were used. • A biohydrometallurgical process was employed to bio-lixiviate batteries. • Manganese oxides were active in the oxidation of VOCs (ethanol and heptane). - Abstract: Manganese, in the form of oxide, was recovered from spent alkaline and zinc–carbon batteries employing a biohydrometallurgy process, using a pilot plant consisting in: an air-lift bioreactor (containing an acid-reducing medium produced by an Acidithiobacillus thiooxidans bacteria immobilized on elemental sulfur); a leaching reactor (were battery powder is mixed with the acid-reducing medium) and a recovery reactor. Two different manganese oxides were recovered from the leachate liquor: one of them by electrolysis (EMO) and the other by a chemical precipitation with KMnO{sub 4} solution (CMO). The non-leached solid residue was also studied (RMO). The solids were compared with a MnO{sub x} synthesized in our laboratory. The characterization by XRD, FTIR and XPS reveal the presence of Mn{sub 2}O{sub 3} in the EMO and the CMO samples, together with some Mn{sup 4+} cations. In the solid not extracted by acidic leaching (RMO) the main phase detected was Mn{sub 3}O{sub 4}. The catalytic performance of the oxides was studied in the complete oxidation of ethanol and heptane. Complete conversion of ethanol occurs at 200 °C, while heptane requires more than 400 °C. The CMO has the highest oxide selectivity to CO{sub 2}. The results show that manganese oxides obtained using spent alkaline and zinc–carbon batteries as raw materials, have an interesting performance as catalysts for elimination of VOCs.

Gallegos, María V., E-mail: plapimu@yahoo.com.ar [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina); Falco, Lorena R., E-mail: mlfalco@quimica.unlp.edu.ar [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina); Peluso, Miguel A., E-mail: apelu@quimica.unlp.edu.ar [Centro de Investigación y Desarrollo en Ciencias Aplicadas, “Dr. J. Ronco” CINDECA (CONICET CCT La Plata), 47 N°257, La Plata, Buenos Aires (Argentina); Sambeth, Jorge E., E-mail: sambeth@quimica.unlp.edu.ar [Centro de Investigación y Desarrollo en Ciencias Aplicadas, “Dr. J. Ronco” CINDECA (CONICET CCT La Plata), 47 N°257, La Plata, Buenos Aires (Argentina); Thomas, Horacio J. [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina)

2013-06-15T23:59:59.000Z

234

Localized wave functions in the theory of cohesion. III. Model calculations for the alkaline earths and cadmium  

Science Journals Connector (OSTI)

Model calculations of the cohesive properties of the alkaline earths and cadmium were performed using a bond approach to metals based on localized wave functions of the Wannier type. The model corresponds to the empty-core plane-wave model of Ashcroft. The properties investigated were the cohesive energy, lattice parameter, compressibility, P-V relation, and energy of an electron at the bottom of the conduction band. The results are in satisfactory agreement with experiment and show that a localized-electron theory can be used in a practical way to describe cohesion in metals. A comparison of our calculation to other recent treatments of cohesion is also given.

R. Kalkan; L. A. Girifalco; A. Rothwarf

1974-04-15T23:59:59.000Z

235

Chemically and compositionally modified solid solution disordered multiphase nickel hydroxide positive electrode for alkaline rechargeable electrochemical cells  

DOE Patents (OSTI)

A high capacity, long cycle life positive electrode for use in an alkaline rechargeable electrochemical cell comprising: a solid solution nickel hydroxide material having a multiphase structure that comprises at least one polycrystalline .gamma.-phase including a polycrystalline .gamma.-phase unit cell comprising spacedly disposed plates with at least one chemical modifier incorporated around the plates, the plates having a range of stable intersheet distances corresponding to a 2.sup.+ oxidation state and a 3.5.sup.+, or greater, oxidation state; and at least one compositional modifier incorporated into the solid solution nickel hydroxide material to promote the multiphase structure.

Ovshinsky, Stanford R. (Bloomfield Hills, MI); Corrigan, Dennis (Troy, MI); Venkatesan, Srini (Southfield, MI); Young, Rosa (Troy, MI); Fierro, Christian (Troy, MI); Fetcenko, Michael A. (Rochester Hills, MI)

1994-01-01T23:59:59.000Z

236

Solvation Structure and Mobility Mechanism of OH-:? A Car?Parrinello Molecular Dynamics Investigation of Alkaline Solutions  

Science Journals Connector (OSTI)

Solvation Structure and Mobility Mechanism of OH-:? A Car?Parrinello Molecular Dynamics Investigation of Alkaline Solutions ... Figure 17 Comparison of power spectra derived from deuterium velocity autocorrelation functions for pure water (dashed lines in both panels a and b), KOD (panel a) at 1.3 M (solid line) and 14 M (dotted line), and NaOD (panel b) at 1.5 M (solid line), 4.5 M (diamonds), and 15 M (dotted line). ... energy structure on the potential energy surface, because the water drifts to become attached to one of the first solvation shell waters. ...

Bin Chen; Ivaylo Ivanov; Jung Mee Park; Michele Parrinello; Michael L. Klein

2002-10-24T23:59:59.000Z

237

Decomposition of NH3 on Ir(100): A Temperature Programmed Desorption Study A. K. Santra, B. K. Min, C. W. Yi, Kai Luo, T. V. Choudhary, and D. W. Goodman*  

E-Print Network (OSTI)

-temperature fuel cells are of great interest, yet require COx-free hydrogen for optimum operation. For example, proton exchange membrane fuel cells can tolerate only ppm levels of CO in the hydrogen fuel, whereas alkaline fuel cells require COx-free hydrogen. Conventional hydrogen production technologies such as steam

Goodman, Wayne

238

Construction of an Ultralow Temperature Cryostat and Transverse Acoustic Spectroscopy in Superfluid Helium-3 in Compressed Aerogels.  

E-Print Network (OSTI)

??An ultra low temperature cryostat is designed and implemented in this work to perform experiments at sub-millikelvin temperatures, specifically aimed at understanding the superfluid phases… (more)

Bhupathi, Pradeep

2009-01-01T23:59:59.000Z

239

Extraction Utility Design Specification  

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

Extraction Utility Extraction Utility Design Specification January 11, 2011 Document Version 1.9 1 Revision History Date Version Section and Titles Author Summary of Change January 15, 2010 1.0 All Eric Morgan, Dekker, Ltd. Initial Draft Document January 19, 2010 1.1 All Igor Pedan, Dekker, Ltd. Document update with EM team review notes January 20, 2010 1.2 2.1.1 EM Project Team Document Review January 27, 2010 1.3 All Bruce Bartells Final Draft Review May 10, 2010 1.4.1 2.8 Igor Pedan, Dekker, Ltd. Section Update May 14, 2010 1.4.2 2.3.1 Igor Pedan, Dekker, Ltd. System Tables Added May 17, 2010 1.4.3 2.3 Igor Pedan, Dekker, Ltd. Enhancements Update June 29, 2010 1.5 All Igor Pedan, Dekker, Ltd. Revised for Version 8.0.20100628 July 14, 2010 1.5.1 2.8 Igor Pedan,

240

Commissioning Specifications | Department of Energy  

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

Specifications Specifications Commissioning Specifications October 16, 2013 - 4:44pm Addthis Commissioning specifications outline basic requirements of the commissioning process and detail the roles and responsibilities of each party involved. System checklists, startup requirements, and performance testing procedures are typically included in the specifications to let contractors know what standards are required during the various testing phases involved throughout the commissioning process. Since renewable energy technologies are changing and developing rapidly, it is critical to have the commissioning specifications developed by a well-informed resource with up-to-date renewable energy expertise. This resource must also have a thorough understanding of how renewable energy

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241

Review of ASP EOR (alkaline surfactant polymer enhanced oil recovery) technology in the petroleum industry: Prospects and challenges  

Science Journals Connector (OSTI)

Abstract Owing to the inefficiency of the conventional primary and secondary recovery methods to yield above 20–40% of the OOIP (original oil in place) as incremental oil, the need for EOR (Enhanced Oil Recovery) techniques to recover a higher proportion of the OOIP has become imperative. ASP (Alkaline/Surfactant/Polymer) is one of such techniques that has proven successful due to its ability to improve displacement and sweep efficiency. Alkaline–surfactant–polymer (ASP) flooding is a combination process in which alkali, surfactant and polymer are injected at the same slug. Because of the synergy of these three components, ASP is widely practiced in both pilot and field operations with the objective of achieving optimum chemistry at large injection volumes for minimum cost. Despite its popularity as a potentially cost-effective chemical flooding method, it is not without its limitations. This paper therefore focuses on the reviews of the application of ASP flooding process in oil recovery in the petroleum industry and its limitations in maximizing oil recovery from onshore and offshore reservoirs. Also discussed are technical solutions to some of these challenges.

Abass A. Olajire

2014-01-01T23:59:59.000Z

242

Combined Utilization of Cation Exchanger and Neutral Receptor to Volume Reduction of Alkaline Tank Waste by Separation of Sodium Salts  

SciTech Connect

In this report, novel approaches to the selective liquid-liquid extraction separation of sodium hydroxide and sodium nitrate from high-level alkaline tank waste will be discussed. Sodium hydroxide can be successfully separated from alkaline tank-waste supernatants by weakly acidic lipophilic hydroxy compounds via a cation-exchange mechanism referred to as pseudo hydroxide extraction. In a multi-cycle process, as sodium hydroxide in the aqueous phase becomes depleted, it is helpful to have a neutral sodium receptor in the extraction system to exploit the high nitrate concentration in the waste solution to promote sodium removal by an ion-pair extraction process. Simultaneous utilization of an ionizable organic hydroxy compound and a neutral extractant (crown ether) in an organic phase results in the synergistic enhancement of ion exchange and improved separation selectivity due to the receptor's strong and selective sodium binding. Moreover, combination of the hydroxy compound and the crown ether provides for mutually increased solubility, even in a non-polar organic solvent. Accordingly, application of Isopar{reg_sign} L, a kerosene-like alkane solvent, becomes feasible. This investigation involves examination of such dual-mechanism extraction phases for sodium extraction from simulated and actual salt cake waste solutions. Sodium salts can be regenerated upon the contact of the loaded extraction phases with water. Finally, conditions of potential extraction/strip cycling will be discussed.

Levitskaia, Tatiana G.; Lumetta, Gregg J.; Moyer, Bruce A.

2004-03-29T23:59:59.000Z

243

Alkaline phosphatase, a biochemical marker of cellular differentiation of BeWo choriocarcinoma cell line  

E-Print Network (OSTI)

NaCl-treated (control). In contrast, the ALP specific activity of TM from Caco-2 cells which differentiated spontaneously did not show an increase with butyrate treatment. We separated TM into a light membrane (LM) fraction (I 7/40%) and a heavy...

Lu, Wei

2012-06-07T23:59:59.000Z

244

SG Network System Requirements Specification  

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

SG Network System Requirements Specification SG Network System Requirements Specification Interim Release 3 5/17/2010 - 2 - Table of Contents Document History ....................................................................................................................................... - 3 - Revision History .......................................................................................................................................... - 3 - Preface........................................................................................................................................................ - 4 - Authors........................................................................................................................................................ - 6 -

245

Polyelectrolyte Complex Nanoparticles for Protection and Delayed Release of Enzymes in Alkaline pH and at Elevated Temperature during Hydraulic Fracturing of Oil Wells  

E-Print Network (OSTI)

Polyethylenimine-dextran sulfate polyelectrolyte complexes (PEC) were used to entrap two enzymes used to degrade polymer gels following hydraulic fracturing of oil wells in order to obtain delayed release and to protect the enzyme from harsh...

Barati Ghahfarokhi, Reza; Johnson, Stephen J.; McCool, Stan; Green, Don W.; Willhite, G. Paul; Liang, Jenn-Tai

2012-01-01T23:59:59.000Z

246

Hydrogen Production from Nuclear Energy via High Temperature Electrolysis  

SciTech Connect

This paper presents the technical case for high-temperature nuclear hydrogen production. A general thermodynamic analysis of hydrogen production based on high-temperature thermal water splitting processes is presented. Specific details of hydrogen production based on high-temperature electrolysis are also provided, including results of recent experiments performed at the Idaho National Laboratory. Based on these results, high-temperature electrolysis appears to be a promising technology for efficient large-scale hydrogen production.

James E. O'Brien; Carl M. Stoots; J. Stephen Herring; Grant L. Hawkes

2006-04-01T23:59:59.000Z

247

Yeast and Temperature  

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

Yeast and Temperature Yeast and Temperature Name: Alyssaaum Location: N/A Country: N/A Date: N/A Question: How does temperature affect yeast? Replies: Dear Alyssa, At low temperatures (0-10 C) yeast will not grow, but not die either. At temperatures 10-37 C yeast will grow and multiply, faster at higher temperatures with an optimal growth at 30 or 37 C (that depends on the species). At higher temperature the cells become stressed, meaning that their content becomes damaged and which can be repaired to some degree. At high temperatures (>50 C) the cells die. The bacteria can survive freezing under certain conditions. When baking bread all yeast dies during the process. Dr. Trudy Wassenaar yeast is a unique type of fungi that grows quickly by rapid cell division. It grows best at about 100 degrees fahrenheit, colder will cause it to go dormant, much warmer could kill it

248

6, 13011320, 2006 Temperature  

E-Print Network (OSTI)

ACPD 6, 1301­1320, 2006 Temperature climatology and trend estimates over Durban, South Africa H and Physics Discussions Temperature climatology and trend estimates in the UTLS region as observed over Commons License. 1301 #12;ACPD 6, 1301­1320, 2006 Temperature climatology and trend estimates over Durban

Boyer, Edmond

249

Thermoelectric Temperature Control  

E-Print Network (OSTI)

the controller can supply the power required to bring the device to the desired temperature and maintain a stableNOTE 201TM TECHNICAL Optimizing Thermoelectric Temperature Control Systems #12;2 May 1995 92 of applications that require extremely stable temperature control. System design can be complex, but improved

Saffman, Mark

250

Development of Cathode Architectures Customized for H2/O2 Metal-Cation-Free Alkaline Membrane Fuel Cells  

Science Journals Connector (OSTI)

A final significant finding was that Pt-free Vulcan XC-72R?only cathodes can produce between 25% and 36% of the power obtained when Pt/C catalysts were used in SPE-AFCs (this is not the case with PEMFCs where carbon is electrokinetically inactive for the oxygen reduction reaction at the cathode); this insight highlights the necessity of recording the background currents, arising from the carbon supports, when testing different catalyst formulations in alkaline media. ... The Ag/C catalyst performed poorly for the hydrogen oxidation reaction (HOR) at the anode of a SPE-AFC and for the ORR at the cathode of a PEMFC. ... MEA E containing the E-Tek-catalyzed carbon paper electrode did not perform as well as MEA A. ...

Christelle Tamain; Simon D. Poynton; Robert C. T. Slade; Bryony Carroll; John R. Varcoe

2007-11-10T23:59:59.000Z

251

Synthesis of cobalt oxide-reduced graphene nanocomposite and its enhanced electrochemical properties as negative material for alkaline secondary battery  

Science Journals Connector (OSTI)

Abstract A potential negative electrode material Co3O4@rGO is synthesized via a facile reflux condensation route. The electrochemical performances of Co3O4@rGO composite for alkaline rechargeable Ni/Co batteries have been systemically investigated for the first time. The reduced-graphene can remarkably enhance the electrochemical activity of Co3O4 materials, leading to a notable improvement of discharge capacity, cycle stability and rate capability. Interestingly, the maximum discharge capacity of Co3O4@rGO-20 (additive amount of GO is 20 mg) electrode can reach 511.4 mAh g?1 with the capacity retention of 89.1% after 100 cycles at a discharge current of 100 mA g?1. A properly electrochemical reaction mechanism of Co3O4@rGO electrode is also constructed in detail.

Yanan Xu; Xiaofeng Wang; Cuihua An; Yijing Wang; Lifang Jiao; Huatang Yuan

2014-01-01T23:59:59.000Z

252

Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell  

DOE Patents (OSTI)

The corrosion rate of low carbon steel within a positive electrode of a high-temperature, secondary electrochemical cell that includes FeS as active material is substantially reduced by incorporating therein finely divided iron powder in stoichiometric excess to the amount required to form FeS in the fully charged electrode. The cell typically includes an alkali metal or alkaline earth metal as negative electrode active material and a molten metal halide salt as electrolyte. The excess iron permits use of inexpensive carbon steel alloys that are substantially free of the costly corrosion resistant elements chromium, nickel and molybdenum while avoiding shorten cell life resulting from high corrosion rates.

Otto, N.C.; Warner, B.T.; Smaga, J.A.; Battles, J.E.

1982-07-07T23:59:59.000Z

253

Calc-alkaline mafic rocks of the Black Dyke Formation: Remnants of the final activity of a submerged Permian volcano  

SciTech Connect

The Permian Black Dyke Fm., which occurs as large tectonic slices within the Luning allochthon in the Excelsior Mountains, NV, forms an E-W trending anticline at Black Dyke Mountain. The 800-m thick stratigraphic succession consists of volcanic and pyroclastic rocks overlain conformably by volcaniclastic sediments. Along the northern limb of the anticline, the rocks consist of mafic porphyritic lavas, breccias, and graded and ungraded pyroclastic beds. The sedimentary unit consists of thick volcaniclastic turbidites overlain by conglomerates, sandstones, and mudstones. Along the southern limb of the anticline, the sequence is replaced by reworked breccia, tuffs, and sandstones. Mafic plutonic rocks occur as xenoliths in the lavas and breccias, and as coeval plugs intruding the section. Gabbros show cumulate or porphyritic textures and are composed of amph, cpx, and zoned plag. Their Ti/V (14.5--15) and Nb/Y (0.25--0.3) ratios fall in the range commonly found in calc-alkaline rocks. Diorite porphyry shows high Al[sub 2]O[sub 3], ZrO[sub 2], and REE abundances indicating that this rock is more fractionated. Basalts and andesites are plag-cpx-opx phyric. They often include glomeroporphyritic clots of cpx with amph coronas. Some rocks exhibit fluidal textures. Both volcanic and plutonic rocks show homogeneous geochemical features and similar crystallization sequences: Fe-Ti oxides---->plag---->opx + cpx----> brown zoned hbl, suggesting that they are cogenetic. Thus, the lower part of the Black Dyke Fm. likely represents the final products formed in a calc-alkaline magma chamber because pyroclastic rocks prevail over lava flows and abundant early crystal cumulates occur as plugs or as inclusions in the lavas and breccias.

Blein, O.; Lapierre, H.; Pecher, A. (URA-CNRS, Grenoble (France)); Schweickert, R.A. (Univ. of Nevada, Reno, NV (United States). Dept. of Geological Science)

1993-04-01T23:59:59.000Z

254

QGESS: Specification for Selected Feedstocks  

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

011812 National Energy Technology Laboratory Office of Program Performance and Benefits 2 Specification for Selected Feedstocks Quality Guidelines for Energy System Studies January...

255

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module comprises a series of solar cells having a thermally activated switch connected in parallel with several of the cells. The photovoltaic module is adapted to charge conventional batteries having a temperature coefficient differing from the temperature coefficient of the module. The calibration temperatures of the switches are chosen whereby the colder the ambient temperature for the module, the more switches that are on and form a closed circuit to short the associated solar cells. By shorting some of the solar cells as the ambient temperature decreases, the battery being charged by the module is not excessively overcharged at lower temperatures. PV module is an integrated solution that is reliable and inexpensive. 2 figs.

Mosher, D.M.

1997-11-18T23:59:59.000Z

256

A Carbon-Supported Copper Complex of 3,5-Diamino-1,2,4-triazole as a Cathode Catalyst for Alkaline Fuel Cell Applications  

E-Print Network (OSTI)

Fuel Cell Applications Fikile R. Brushett, Matthew S. Thorum, Nicholas S. Lioutas, Matthew S. Naughton-tri/C) is investigated as a cathode material using an alkaline microfluidic H2/O2 fuel cell. The absolute Cu be realized by optimizing catalyst and electrode preparation procedures. Fuel cell-based systems hold promise

Kenis, Paul J. A.

257

Positive dermal hypersensitivity and specific antibodies in workers exposed to bio-engineered enzymes  

SciTech Connect

Thirty-six employees who produced industrial enzymes from bio-engineered strains of bacteria and fungi were evaluated by skin prick testing and enzyme linked immunosorbent assays for specific IgE and IgG antibodies. The workers complained of asthma- and flu-like' symptoms which generally lessened away from work. The enzymes evaluated were {alpha}-amylase from A. niger (ind-AAN), B. licheniformis (ind-AAL) and B. subtilis (ind-AAS); purified {alpha}-amylase from B. subtilis (AAS) and A. niger (AAN); alkaline protease from B. licheniformis (ind-APL) and purified alkaline protease (APL); amylase glucosidase from A. niger (ind-AGN) and purified amylase glucosidase (AGN). Significantly positive skin tests were found for APL, AGN and ind-AAN. Significantly elevated specific IgE results were observed for AAN, AGN, and ind-AAN; elevated specific IgGs were observed for AAN, ind-AAN, ind-AAS, ind-AAL and ind-AGN. Radioimmunoassays of air filter samples (using sera with high Ab titers) for 4 of the ind-enzymes showed only ind-AAN at extremely high environmental levels. These results indicate that occupational exposure to some ind-enzymes causes immediate onset dermal hypersensitivity reactions. The results are equivocal as to whether these reactions are IgE mediated, as IgE titers were low. Contrary to this, IgG titers were extremely high and suggest that these biomarkers can be used as indicators of both individual exposure and environmental analyses.

Biagini, R.E.; Henningsen, G.M.; Driscoll, R.; MacKenzie, B.A.; Wilcox, T.; Scinto, J.D.; Bernstein, D.M.; Swanson, M. (Univ. of Cincinnati, OH (United States) Mayo Clinic, Rochester, MN (United States))

1991-03-15T23:59:59.000Z

258

Hanford Site environmental management specification  

SciTech Connect

The US Department of Energy, Richland Operations Office (RL) uses this Hanford Site Environmental Management Specification (Specification) to document top-level mission requirements and planning assumptions for the prime contractors involved in Hanford Site cleanup and infrastructure activities under the responsibility of the US Department of Energy, Office of Environmental Management. This Specification describes at a top level the activities, facilities, and infrastructure necessary to accomplish the cleanup of the Hanford Site and assigns this scope to Site contractors and their respective projects. This Specification also references the key National Environmental Policy Act of 1969 (NEPA), Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), and safety documentation necessary to accurately describe the cleanup at a summary level. The information contained in this document reflects RL`s application of values, priorities, and critical success factors expressed by those involved with and affected by the Hanford Site project. The prime contractors and their projects develop complete baselines and work plans to implement this Specification. These lower-level documents and the data that support them, together with this Specification, represent the full set of requirements applicable to the contractors and their projects. Figure 1-1 shows the relationship of this Specification to the other basic Site documents. Similarly, the documents, orders, and laws referenced in this specification represent only the most salient sources of requirements. Current and contractual reference data contain a complete set of source documents.

Grygiel, M.L.

1998-06-10T23:59:59.000Z

259

Daily Temperature Lag  

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

Daily Temperature Lag Daily Temperature Lag Name: Shyammayi Status: teacher Grade: K-2 Country: Mauritius Date: Summer 2011 Question: At what time of the day is the temperature hottest? At what time of the day is the temperature coldest? Replies: In general, the hottest part of the day is late afternoon. The sun has passed its peak in the sky but still heats the Earth up until very late in the afternoon. The lowest temperatures are around dawn. Earth has had all night to get rid of the day's heat by radiating it into space. After sunrise, temperatures begin to climb. This can be changed by local storms, sea breezes or mountain breezes and even monsoon winds. Hope this helps. R. W. "Bob" Avakian Instructor Arts and Sciences/CRC Oklahoma State Univ. Inst. of Technology Shyammayi

260

Automatic temperature adjustment apparatus  

DOE Patents (OSTI)

An apparatus for increasing the efficiency of a conventional central space heating system is disclosed. The temperature of a fluid heating medium is adjusted based on a measurement of the external temperature, and a system parameter. The system parameter is periodically modified based on a closed loop process that monitors the operation of the heating system. This closed loop process provides a heating medium temperature value that is very near the optimum for energy efficiency.

Chaplin, James E. (66 Overlook Rd., Bloomingdale, NJ 07403)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Specific-heat discontinuity in impure two-band superconductors  

E-Print Network (OSTI)

at the critical temperature T-c decreases with increasing disorder, its ratio to the normal-state specific heat at T-c increases and slowly converges to the isotropic value. For strong disorder the deviation from the isotropic value is proportional to the elastic...

Mishonov, TM; Penev, ES; Indekeu, JO; Pokrovsky, Valery L.

2003-01-01T23:59:59.000Z

262

Surface Temperature of IGUs  

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

117 117 Surface Temperatures of Insulated Glazing Units: Infrared Thermography Laboratory Measurements Brent T. Griffith, Daniel Türler, and Dariush Arasteh Building Technologies Program Environmental Energy Technologies Division Lawrence Berkeley National Laboratory University of California Berkeley, CA 94720 USA Fax: 510-486-6046, email: D_Arasteh@lbl.gov Abstract Data are presented for the distribution of surface temperatures on the warm-side surface of seven different insulated glazing units. Surface temperatures are measured using infrared thermography and an external referencing technique. This technique allows detailed mapping of surface temperatures that is non-intrusive. The glazings were placed between warm and cold environmental chambers that were operated at conditions

263

External vs. body temperature  

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

External vs. body temperature External vs. body temperature Name: jacqui Location: N/A Country: N/A Date: N/A Question: If one's internal body temperature is approximately 98.6, WHY when the external temperature is 98.6 do we feel hot? Since both temperatures are "balanced", shouldn't we feel comfortable? I am assuming here that humidity levels are controlled, and play no factor in the external temperature. Replies: First of all, skin temperature is lower than 98.6F; 98.6F is internal body temperature, so air at 98.6F is hotter than skin. But more important, it is the nervous system, and the cells in your skin that your brain uses to detect temperature that determine whether you "feel" hot or not, not whether the air is hotter than your skin. These are set so that you feel hot when the air is actually colder than your skin. Why? They are probably set to make you feel hot whenever the air is warm enough so that your body has some trouble getting rid of the excess heat it produces through metabolism. This insures that you take some actions to help your body cool off. Like drinking cool water, or reducing exercise

264

Temperature | Open Energy Information  

Open Energy Info (EERE)

Property:GeofluidTemp M Property:MeanReservoirTemp R Property:ReservoirTemp T Property:Temperature U Property:USGSMeanReservoirTemp Retrieved from "http:...

265

ARM - Temperature Converter  

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

Teachers' Toolbox Lesson Plans Temperature Converter The Fahrenheit scale, invented by German physicist Daniel Gabriel Fahrenheit (1686-1736), is based on 32 F for the freezing...

266

Low Temperature Proton Conductivity  

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

Presentation by Tom Zawodzinski to DOE's Fuel Cell Operations at Sub-Freezing Temperatures Workshop held February 1-5, 2005 in Phoenix, Arizona.

267

Temperature and productivity  

Office of Scientific and Technical Information (OSTI)

symptoms and performance of office work under combined exposure to temperature, noise and air pollution. PhD Thesis. International Centre for Indoor Environment and Energy,...

268

Oak Ridge Site Specific Advisory ...  

Office of Environmental Management (EM)

Ridge Site Specific Advisory Board * P.O. Box 2001, EM-91, Oak Ridge, TN 37831 Phone: 865-241-4583, 865-241-4584, 1-800-382-6938 * Fax: 865-574-3521 * Internet:...

269

Electric motor model repair specifications  

SciTech Connect

These model repair specifications list the minimum requirements for repair and overhaul of polyphase AC squireel cage induction motors. All power ranges, voltages, and speeds of squirrel cage motors are covered.

NONE

1995-08-01T23:59:59.000Z

270

Fiber optic temperature sensor  

SciTech Connect

Our fiber optic temperature measurement sensor and system is a major improvement over methods currently in use in most industrial processes, and it delivers all of the attributes required simplicity, accuracy, and cost efficiency-to help improve all of these processes. Because temperature is a basic physical attribute of nearly every industrial and commercial process, our system can eventually result in significant improvements in nearly every industrial and commercial process. Many finished goods, and the materials that go into them, are critically dependent on the temperature. The better the temperature measurement, the better quality the goods will be and the more economically they can be produced. The production and transmission of energy requires the monitoring of temperature in motors, circuit breakers, power generating plants, and transmission line equipment. The more reliable and robust the methods for measuring these temperature, the more available, stable, and affordable the supply of energy will become. The world is increasingly realizing the threats to health and safety of toxic or otherwise undesirable by products of the industrial economy in the environment. Cleanup of such contamination often depends on techniques that require the constant monitoring of temperature in extremely hazardous environments, which can damage most conventional temperature sensors and which are dangerous for operating personnel. Our system makes such monitoring safer and more economical.

Rabold, D.

1995-12-01T23:59:59.000Z

271

Building Energy Data Exchange Specification Scoping Report |...  

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

Building Energy Data Exchange Specification Scoping Report Building Energy Data Exchange Specification Scoping Report The Building Energy Data Exchange Specification (BEDES),...

272

High temperature probe  

DOE Patents (OSTI)

A high temperature probe for sampling, for example, smokestack fumes, and is able to withstand temperatures of 3000.degree. F. The probe is constructed so as to prevent leakage via the seal by placing the seal inside the water jacket whereby the seal is not exposed to high temperature, which destroys the seal. The sample inlet of the probe is also provided with cooling fins about the area of the seal to provide additional cooling to prevent the seal from being destroyed. Also, a heated jacket is provided for maintaining the temperature of the gas being tested as it passes through the probe. The probe includes pressure sensing means for determining the flow velocity of an efficient being sampled. In addition, thermocouples are located in various places on the probe to monitor the temperature of the gas passing there through.

Swan, Raymond A. (Fremont, CA)

1994-01-01T23:59:59.000Z

273

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty...  

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

in the following eleven slides Current Specific Objectives: (SNL) Understand the spatial and temporal evolution of soot formation in low-temperature diesel combustion...

274

Lattice dynamics of the potential-induced breathing model: Phonon dispersion in the alkaline-earth oxides  

Science Journals Connector (OSTI)

We find the dynamical matrix for the potential-induced breathing (PIB) model for ionic solids, and calculate with no adjustable parameters the phonon-dispersion relations for the alkaline-earth oxides in the B1 structure. Our approach is similar to that of Gordon and Kim, in which the crystalline charge densities are estimated by overlapping atomic charge densities, which are then converted to energy by electron-gas approximations. It goes beyond the original Gordon-Kim model by allowing for spherical breathing of the atoms in response to the long-range potential, and beyond later refinements of the modified-electron-gas models by explicitly including the effects of PIB on the self-energy and the overlap interactions. This allows us to treat general deformations and lattice dynamics including the many-body PIB effects. PIB couples the long- and short-range forces in a way that is not present in any other lattice-dynamical model, since the spherical charge relaxation is coupled to the long-range electrostatic potential. PIB gives better agreement for the splitting of the longitudinal- and transverse-optic mode frequencies than is found with rigid-ion models, as well as much improved acoustic branches. PIB is a nonempirical model; no experimental data are used other than the values of fundamental constants such as Planck’s constant and the atomic masses.

Ronald E. Cohen; L. L. Boyer; M. J. Mehl

1987-04-15T23:59:59.000Z

275

Anodically electrodeposited Co+Ni mixed oxide electrode: preparation and electrocatalytic activity for oxygen evolution in alkaline media  

SciTech Connect

Co+Ni mixed oxides on Ni substrate were prepared through anodic electrodeposition from Co(NO{sub 3}){sub 2} and Ni(NO{sub 3}){sub 2} aqueous solutions with five different Co{sup 2+}/Ni{sup 2+} ratios beside only Co{sup 2+}. By the electrochemical measurements, the optimum performance in electrocatalytic activity for oxygen evolution reaction in alkaline media was obtained on the Co+Ni mixed oxide deposited from the solution containing Co{sup 2+}/Ni{sup 2+} ratio of 1:1. The mixed oxide is corresponding to about 68at% Co contents with spinel-type NiCo{sub 2}O{sub 4} phase and porosity surface structure. The electrochemical kinetic parameters including exchange current density, Tafel slopes, reaction order with respect to [OH{sup -}] and standard electrochemical enthalpy of activation were analyzed also. A possible mechanism involving the formation of a physisorbed hydrogen peroxide intermediate in a slow electrochemical step was presented, which accounts for the values of the experimental results.

Wu Gang [Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084 (China)]. E-mail: wugang@mail.tsinghua.edu.cn; Li Ning [Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 (China); Zhou Derui [Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 (China); Mitsuo, Kurachi [Faculty of Engineering, Kyoto University, Kyoto 606-8283 (Japan); Xu Boqing [Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084 (China)

2004-10-01T23:59:59.000Z

276

Fever and Body Temperature  

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

Fever and Body Temperature Fever and Body Temperature Name: Ying Location: N/A Country: N/A Date: N/A Question: Hi, I have a few questions that I want to ask you: Why does your body chose to raise its temperature when you have a fever? Replies: Most bacteria and viruses that live in your body grow best at body temperature. They don't grow very well when the temperature is raised. When there are bacteria in your body they give off chemicals that signal white blood cells to come to try to eat them and also affect an area in your brain called the hypothalamus. This part of the brain controls alot of the automatic functions in your body and is also the site of your body's "thermostat". When the chemicals from the bacteria circulate through the hypothalamus it sets the body's temperature higher. This is called a fever. Your body kind of tries to "sweat out" the bacteria and kill them with a higher temperature. Some scientists question whether trying to bring down a fever is the best thing to do. If it isn't too high, some believe we should just let it work

277

Maintaining body temperature  

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

Maintaining body temperature Maintaining body temperature Name: Jeff Location: N/A Country: N/A Date: N/A Question: What keeps the human body at a constant temperature of 98.6? Replies: Maintaining body temperature is very complex. It also takes a lot of energy. About 80% of the energy from the food you eat goes to maintaining body temperature. Basically, the chemical reactions of metabolism of stored food, especially fats, generate heat as a by product. This heat warms the body. The brain reads temperature and controls to some extent the rate of this metabolism. There are also many other mechanisms triggered by the brain to keep the core of your body warm, even if the periphery (skin) is cold. Blood vessels to the fingers and toes constrict, so that the cold air doesn't cool the blood too much, so that cooled blood doesn't cool down the heart and brain when it returns. In severe cases, your body will sacrifice a finger or a toe to keep you from dying of cold core temperature (frostbite: it saves your life!). Also the brain can order a lot of muscles to contract rapidly. This generates a lot of heat quickly, a response called shivering. There's much more to this exciting field of research.

278

Moderate Temperature | Open Energy Information  

Open Energy Info (EERE)

Moderate Temperature Moderate Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Moderate Temperature Dictionary.png Moderate Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 190°C and 230°C is considered by Sanyal to be "moderate temperature." "The next higher resource temperature limit is chosen as 230°C, which is lower than the minimum initial resource temperature encountered in

279

Evaluation of an alkaline-side solvent extraction process for cesium removal from SRS tank waste using laboratory-scale centrifugal contactors  

SciTech Connect

An alkaline-side solvent extraction process for cesium removal from Savannah River Site (SRS) tank waste was evaluated experimentally using a laboratory-scale centrifugal contactor. Single-stage and multistage tests were conducted with this contactor to determine hydraulic performance, stage efficiency, and general operability of the process flowsheet. The results and conclusions of these tests are reported along with those from various supporting tests. Also discussed is the ability to scale-up from laboratory- to plant-scale operation when centrifugal contractors are used to carry out the solvent extraction process. While some problems were encountered, a promising solution for each problem has been identified. Overall, this alkaline-side cesium extraction process appears to be an excellent candidate for removing cesium from SRS tank waste.

Leonard, R. A.; Conner, C.; Liberatore, M. W.; Sedlet, J.; Aase, S. B.; Vandegrift, G. F.

1999-11-29T23:59:59.000Z

280

ARM - Measurement - Atmospheric temperature  

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

temperature temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric temperature The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

ARM - Measurement - Virtual temperature  

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

govMeasurementsVirtual temperature govMeasurementsVirtual temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Virtual temperature The virtual temperature Tv = T(1 + rv/{epsilon}), where rv is the mixing ratio, and {epsilon} is the ratio of the gas constants of air and water vapor ( 0.622). Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems MWRP : Microwave Radiometer Profiler RWP : Radar Wind Profiler

282

Temperature-aware microarchitecture  

Science Journals Connector (OSTI)

With power density and hence cooling costs rising exponentially, processor packaging can no longer be designed for the worst case, and there is an urgent need for runtime processor-level techniques that can regulate operating temperature when the package's ...

Kevin Skadron; Mircea R. Stan; Wei Huang; Sivakumar Velusamy; Karthik Sankaranarayanan; David Tarjan

2003-06-01T23:59:59.000Z

283

Elevated temperature crack propagation  

SciTech Connect

This paper is a summary of two NASA contracts on high temperature fatigue crack propagation in metals. The first evaluated the ability of fairly simple nonlinear fracture parameters to correlate crack propagation. Hastelloy-X specimens were tested under isothermal and thermomechanical cycling at temperatures up to 980 degrees C (1800 degrees F). The most successful correlating parameter was the crack tip opening displacement derived from the J-integral. The second evaluated the ability of several path-independent integrals to correlate crack propagation behavior. Inconel 718 specimens were tested under isothermal, thermomechanical, temperature gradient, and creep conditions at temperatures up to 650 degrees C (1200 degrees F). The integrals formulated by Blackburn and by Kishimoto correlated the data reasonably well under all test conditions.

Orange, T.W.

1994-02-01T23:59:59.000Z

284

Low temperature cryoprobe  

DOE Patents (OSTI)

A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperatures of 77 degrees Kelvin, is discussed. 3 figs.

Sungaila, Z.F.

1988-04-12T23:59:59.000Z

285

High temperature pressure gauge  

DOE Patents (OSTI)

A high temperature pressure gauge comprising a pressure gauge positioned in fluid communication with one end of a conduit which has a diaphragm mounted in its other end. The conduit is filled with a low melting metal alloy above the diaphragm for a portion of its length with a high temperature fluid being positioned in the remaining length of the conduit and in the pressure gauge.

Echtler, J. Paul (Pittsburgh, PA); Scandrol, Roy O. (Library, PA)

1981-01-01T23:59:59.000Z

286

Temperature maintained battery system  

SciTech Connect

A chassis contains a battery charger connected to a multi-cell battery. The charger receives direct current from an external direct current power source and has means to automatically selectively charge the battery in accordance with a preselected charging program relating to temperature adjusted state of discharge of the battery. A heater device is positioned within the chassis which includes heater elements and a thermal switch which activates the heater elements to maintain the battery above a certain predetermined temperature in accordance with preselected temperature conditions occurring within the chassis. A cooling device within the chassis includes a cooler regulator, a temperature sensor, and peltier effect cooler elements. The cooler regulator activates and deactivates the peltier cooler elements in accordance with preselected temperature conditions within the chassis sensed by the temperature sensor. Various vehicle function circuitry may also be positioned within the chassis. The contents of the chassis are positioned to form a passage proximate the battery in communication with an inlet and outlet in the chassis to receive air for cooling purposes from an external source.

Newman, W.A.

1980-10-21T23:59:59.000Z

287

High Temperature | Open Energy Information  

Open Energy Info (EERE)

Temperature Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: High Temperature Dictionary.png High Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 230°C and 300°C is considered by Sanyal to be "high temperature." "Above a temperature level of 230°C, the reservoir would be expected to become two-phase at some point during exploitation. The next higher

288

Common Platform Enumeration: Naming Specification  

E-Print Network (OSTI)

Institute of Standards and Technology (NIST) promotes the U.S. economy and public welfare by providing of Booz Allen Hamilton, Seth Hanford of Cisco Systems, Inc., Tim Keanini of nCircle, Kent Landfield of Mc that IT products must meet for conformance with the CPE Naming version 2.3 specification. Trademark Information CPE

289

Effect of TiO2 Content on Ethanol Electrooxidation in Alkaline Media Using Pt Nanoparticles Supported on Physical Mixtures of Carbon and TiO2 as Electrocatalysts  

Science Journals Connector (OSTI)

Pt nanoparticles supported on physical mixtures of carbon and TiO2 (Pt/(C?+?TiO2) electrocatalyst) were tested for ethanol electrooxidation in alkaline media. The electrocatalysts were...2 mass ratios using boroh...

R. F. B. De Souza; G. S. Buzzo; J. C. M. Silva; E. V. Spinacé…

2014-04-01T23:59:59.000Z

290

Alkaline-Side Extraction of Cesium from Savannah River Tank Waste Using a Calixarene-Crown Ether Extractant  

SciTech Connect

Results are presented supporting the viability of the alkaline-side CSEX process as a potential replacement for the In-Tank Precipitation process for removal of cesium from aqueous high-level waste (HLW) at the Savannah River Site (SRS). Under funding from the USDOE Efficient Separations and Crosscutting program, a flowsheet was suggested in early June of 1998, and in the following four months, this flowsheet underwent extensive testing, both in batch tests at ORNL and ANL and in two centrifugal-contactor tests at ANL. To carry out these tests, the initial ESP funding was augmented by direct funds from Westinghouse Savannah River Corporation. The flowsheet employed a solvent containing a calixarene-crown hybrid compound called BoBCalixC6 that was invented at ORNL and can now be obtained commercially for government use from IBC Advanced Technologies. This special extractant is so powerful and selective that it can be used at only 0.01 M, compensating for its expense, but a modifier is required for use in an aliphatic diluent, primarily to increase the cesium distribution ratio D{sub Cs} in extraction. The modifier selected is a relatively economical fluorinated alcohol called Cs3, invented at ORNL and so far available. only from ORNL. For the flowsheet, the modifier is used at 0.2 M in the branched aliphatic kerosene Isopar{reg_sign} L. Testing at ORNL and ANL involved simulants of the SRS HLW. After extraction of the Cs from the waste simulant, the solvent is scrubbed with 0.05 M HNO{sub 3} and stripped with a solution comprised of 0.0005 M HNO{sub 3} and 0.0001 M CsNO{sub 3}. The selection of these conditions is justified in this report, both on the basis of experimental data and underlying theory.

Bonnesen, P.V.; Delmau, L.H.; Haverlock, T.J.; Moyer, B.A.

1998-12-01T23:59:59.000Z

291

Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation and Recycle of Sodium Hydroxide and Sodium Nitrate  

SciTech Connect

This research has focused on new liquid-liquid extraction chemistry applicable to separation of major sodium salts from alkaline tank waste. It was the overall goal to provide the scientific foundation upon which the feasibility of liquid-liquid extraction chemistry for bulk reduction of the volume of tank waste can be evaluated. Sodium hydroxide represented the initial test case and primary focus. It is a primary component of the waste1 and has the most value for recycle. A full explanation of the relevance of this research to USDOE Environmental Management needs will be given in the Relevance, Impact, and Technology Transfer section below. It should be noted that this effort was predicated on the need for sodium removal primarily from low-activity waste, whereas evolving needs have shifted attention to volume reduction of the high-activity waste. The results of the research to date apply to both applications, though treatment of high-activity wastes raises new questions that will be addressed in the renewal period. Toward understanding the extractive chemistry of sodium hydroxide and other sodium salts, it was the intent to identify candidate extractants and determine their applicable basic properties regarding selectivity, efficiency, speciation, and structure. A hierarchical strategy was to be employed in which the type of liquid-liquid-extraction system varied in sophistication from simple, single-component solvents to solvents containing designer host molecules. As an aid in directing this investigation toward addressing the fundamental questions having the most value, a conceptualization of an ideal process was advanced. Accordingly, achieving adequate selectivity for sodium hydroxide represented a primary goal, but this result is worthwhile for waste applications only if certain conditions are met.

Moyer, Bruce A.; Marchand, Alan P.; Bonnesen, Peter V.; Bryan, Jeffrey C.; Haverlock, Tamara J.

2002-03-30T23:59:59.000Z

292

Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation and Recycle of Sodium Hydroxide and Sodium Nitrate  

SciTech Connect

Disposal of high-level nuclear waste is horrendously expensive, in large part because the actual radioactive matter in the tanks has been diluted over 1000-fold by ordinary inorganic chemicals. Treatment processes themselves can exacerbate the problem by adding further volume to the waste. Waste retrieval and sludge washing, for example, will require copious amounts of sodium hydroxide. If the needed sodium hydroxide could be separated from the waste and recycled, however, the addition of fresh sodium hydroxide could be avoided, ultimately reducing the final waste volume and associated disposal costs. The major objective of this research is to explore new liquid-liquid extraction approaches to the selective separation of sodium hydroxide from alkaline high-level wastes stored in underground tanks at the Hanford and Savannah River sites. Consideration is also given to separating potassium and abundant anions, including nitrate, nitrite, aluminate, and carbonate. Salts of these ions represent possible additional value for recycle, alternative disposal, or even use as commodity chemicals. A comprehensive approach toward understanding the extractive chemistry of these salts is envisioned, involving systems of varying complexity, from use of simple solvents to new bifunctional host molecules for ion-pair recognition. These extractants will ideally require no adjustment of the waste composition and will release the extracted salt into water, thereby consuming no additional chemicals and producing no additional waste volume. The overall goal of this research is to provide a scientific foundation upon which the feasibility of new liquid-liquid extraction chemistry applicable to the bulk reduction of the volume of tank waste can be evaluated.

Moyer, Bruce A.; Marchand, Alan P.

2001-06-01T23:59:59.000Z

293

Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation and Recycle of Sodium Hydroxide and Sodium Nitrate  

SciTech Connect

The objective of this research is to explore new liquid-liquid extraction approaches to the selective separation of major sodium salts from alkaline high-level wastes stored in underground tanks at Hanford, Savannah River, and Oak Ridge sites. Disposal of high level waste is horrendously expensive, in large part because the actual radioactive matter in the tanks has been diluted over 1000-fold by ordinary inorganic chemicals. Since the residual bulk chemicals must still undergo expensive treatment and disposal after most of the hazardous radionuclides have been removed, large cost savings will result from processes that reduce the overall waste volume. It is proposed that major cost savings can be expected if sodium hydroxide needed for sludge washing can be obtained from the waste itself, thus avoiding the addition of yet another bulk chemical to the waste and still further increase of the waste volume and disposal cost. Secondary priority is given to separating potassium an d abundant anions, including nitrate, nitrite, aluminate, and carbonate. Salts of these ions represent possible additional value for recycle, alternative disposal, or even use as commodity chemicals. A comprehensive approach toward understanding the extractive chemistry of these salts is envisioned, involving systems of varying complexity, from use of simple solvents to new bifunctional host molecules for ion-pair recognition. These extractants will ideally require no adjustment of the waste composition and will release the extracted salt into water, thereby consuming no additional chemicals and producing no additional waste volume. The overall goal of this research is to provide a scientific foundation upon which the feasibility of new liquid-liquid extraction chemistry applicable to the bulk reduction of the volume of tank waste can be evaluated.

Moyer, Bruce A.; Marchand, Alan P.; Bryan, Jeffrey C.; Bonnesen, Peter V.

1999-06-01T23:59:59.000Z

294

Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation and Recycle of Sodium Hydroxide and Sodium Nitrate  

SciTech Connect

Disposal of high- level waste is horrendously expensive, in large part because the actual radioactive matter in the tanks has been diluted over 1000-fold by ordinary inorganic chemicals. Treatment processes themselves can exacerbate the problem by adding further volume to the waste. Waste retrieval and sludge washing, for example, will require copious amounts of sodium hydroxide. If the needed sodium hydroxide could be separated from the waste and recycled, however, the addition of fresh sodium hydroxide could be avoided, ultimately reducing the final waste volume and associated disposal costs. The major objective of this research is to explore new liquid- liquid extraction approaches to the selective separation of sodium hydroxide from alkaline high-level wastes stored in underground tanks at the Hanford and Savannah River sites. Consideration is also given to separating potassium and abundant anions, including nitrate, nitrite, aluminate, and carbonate. Salts of these ions represent possible additional value for recycle, alternative disposal, or even use as commodity chemicals. A comprehensive approach toward understanding the extractive chemistry of these salts is envisioned, involving systems of varying complexity, from use of simple solvents to new bifunctional host molecules for ion-pair recognition. These extractants will ideally require no adjustment of the waste composition and will release the extracted salt into water, thereby consuming no additional chemicals and producing no additional waste volume. The overall goal of this research is to provide a scientific foundation upon which the feasibility of new liquid-liquid extraction chemistry applicable to the bulk reduction of the volume of tank waste can be evaluated.

Moyer, Bruce A.; Marchand, Alan P.

2000-06-01T23:59:59.000Z

295

Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Temperature Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Low Temperature Dictionary.png Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 150°C and 190°C is considered by Sanyal to be "low temperature." "The mobile fluid phase in these reservoirs is liquid water. A number of commercial power projects have been operated over the last two decades

296

High temperature thermometric phosphors  

DOE Patents (OSTI)

A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.y) wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.

Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN); Gillies, George T. (Earlysville, VA)

1999-03-23T23:59:59.000Z

297

Temperature Data Evaluation  

SciTech Connect

Groundwater temperature is sensitive to the competing processes of heat flow from below the advective transport of heat by groundwater flow. Because groundwater temperature is sensitive to conductive and advective processes, groundwater temperature may be utilized as a tracer to further constrain the uncertainty of predictions of advective radionuclide transport models constructed for the Nevada Test Site (NTS). Since heat transport, geochemical, and hydrologic models for a given area must all be consistent, uncertainty can be reduced by devaluing the weight of those models that do not match estimated heat flow. The objective of this study was to identify the quantity and quality of available heat flow data at the NTS. One-hundred-forty-five temperature logs from 63 boreholes were examined. Thirteen were found to have temperature profiles suitable for the determination of heat flow values from one or more intervals within the boreholes. If sufficient spatially distributed heat flow values are obtained, a heat transport model coupled to a hydrologic model may be used to reduce the uncertainty of a nonisothermal hydrologic model of the NTS.

Gillespie, David

2003-03-01T23:59:59.000Z

298

Temperature initiated passive cooling system  

DOE Patents (OSTI)

A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature. 1 fig.

Forsberg, C.W.

1994-11-01T23:59:59.000Z

299

High Temperature Membrane & Advanced Cathode Catalyst Development  

SciTech Connect

Current project consisted of three main phases and eighteen milestones. Short description of each phase is given below. Table 1 lists program milestones. Phase 1--High Temperature Membrane and Advanced Catalyst Development. New polymers and advanced cathode catalysts were synthesized. The membranes and the catalysts were characterized and compared against specifications that are based on DOE program requirements. The best-in-class membranes and catalysts were downselected for phase 2. Phase 2--Catalyst Coated Membrane (CCM) Fabrication and Testing. Laboratory scale catalyst coated membranes (CCMs) were fabricated and tested using the down-selected membranes and catalysts. The catalysts and high temperature membrane CCMs were tested and optimized. Phase 3--Multi-cell stack fabrication. Full-size CCMs with the down-selected and optimized high temperature membrane and catalyst were fabricated. The catalyst membrane assemblies were tested in full size cells and multi-cell stack.

Protsailo, Lesia

2006-04-20T23:59:59.000Z

300

temperature | OpenEI  

Open Energy Info (EERE)

temperature temperature Dataset Summary Description Freedom Field is a not-for-profit organization formed to facilitate development and commercialization of renewable energy solutions. The organization has installed a variety of renewable energy generating technologies at their facility (located at Rock River Water Reclamation in Rockford, IL), with the intention of serving as a demonstration facility. The facility monitors data (at 5-minute intervals) from a weather station, 12.4 kW of PV panels (56 220-watt panels), a 10kW wind turbine (HAWT), a 1.2 kW wind turbine (VAWT), an absorption cooling system, and biogas burners. Source Freedom Field Date Released July 19th, 2011 (3 years ago) Date Updated Unknown Keywords biogas monitoring data PV radiance solar temperature

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

A Furnace Temperature Regulator  

Science Journals Connector (OSTI)

Synopsis.—By making the heating coil of an electric furnace one arm of a wheatstone bridge, and combining this with a galvanometer regulator, thus keeping constant the resistance of the coil, we can, regardless of variations in the current supply, and with no attention, maintain constant the temperature of furnaces not too directly influenced by the temperature of the room, or where the surrounding air is kept constant. The power available in this regulator is relatively very great indeed; nothing has to be inserted within the furnace cavity, and the lag is practically nothing; the regulator is often almost at its best under conditions most unfavorable to other regulators. It has held a small furnace constant to 0.1° for hours at temperatures from 500° to 1400°.

Walter P. White and Leason H. Adams.

1919-07-01T23:59:59.000Z

302

Temperature profile detector  

DOE Patents (OSTI)

Disclosed is a temperature profile detector shown as a tubular enclosure surrounding an elongated electrical conductor having a plurality of meltable conductive segments surrounding it. Duplicative meltable segments are spaced apart from one another along the length of the enclosure. Electrical insulators surround these elements to confine molten material from the segments in bridging contact between the conductor and a second electrical conductor, which might be the confining tube. The location and rate of growth of the resulting short circuits between the two conductors can be monitored by measuring changes in electrical resistance between terminals at both ends of the two conductors. Additional conductors and separate sets of meltable segments operational at differing temperatures can be monitored simultaneously for measuring different temperature profiles. 8 figs.

Tokarz, R.D.

1983-10-11T23:59:59.000Z

303

Temperature, heat flow maps and temperature gradient holes |...  

Open Energy Info (EERE)

Temperature, heat flow maps and temperature gradient holes Author T. G. Zacharakis Organization Colorado Geological Survey in Cooperation with the U.S. Department of Energy...

304

Ch. VII, Temperature, heat flow maps and temperature gradient...  

Open Energy Info (EERE)

Ch. VII, Temperature, heat flow maps and temperature gradient holes Author T. G. Zacharakis Editor T. G. Zacharakis Published Colorado Geological Survey in Cooperation with the...

305

Chromosome specific repetitive DNA sequences  

DOE Patents (OSTI)

A method is provided for determining specific nucleotide sequences useful in forming a probe which can identify specific chromosomes, preferably through in situ hybridization within the cell itself. In one embodiment, chromosome preferential nucleotide sequences are first determined from a library of recombinant DNA clones having families of repetitive sequences. Library clones are identified with a low homology with a sequence of repetitive DNA families to which the first clones respectively belong and variant sequences are then identified by selecting clones having a pattern of hybridization with genomic DNA dissimilar to the hybridization pattern shown by the respective families. In another embodiment, variant sequences are selected from a sequence of a known repetitive DNA family. The selected variant sequence is classified as chromosome specific, chromosome preferential, or chromosome nonspecific. Sequences which are classified as chromosome preferential are further sequenced and regions are identified having a low homology with other regions of the chromosome preferential sequence or with known sequences of other family me This invention is the result of a contract with the Department of Energy (Contract No. W-7405-ENG-36).

Moyzis, Robert K. (Los Alamos, NM); Meyne, Julianne (Los Alamos, NM)

1991-01-01T23:59:59.000Z

306

Alternative Fuels Data Center: Biodiesel Specifications  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Biodiesel Biodiesel Specifications to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Specifications on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Specifications on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Specifications on Google Bookmark Alternative Fuels Data Center: Biodiesel Specifications on Delicious Rank Alternative Fuels Data Center: Biodiesel Specifications on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Specifications on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Specifications Biodiesel produced or sold in the state, including for the purpose of blending with petroleum diesel, must meet ASTM specification D6751.

307

Fluorescent temperature sensor  

DOE Patents (OSTI)

The present invention is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A [Los Alamos, NM; Baker, Sheila N [Los Alamos, NM; McCleskey, T Mark [Los Alamos, NM

2009-03-03T23:59:59.000Z

308

High Temperature Superconductors  

Science Journals Connector (OSTI)

Abstract A brief review of the phenomenology of superconductivity, the distinction between type I and type II superconductors, and the application of type II superconductors is followed by a history of the theory of conventional superconductivity. Unconventional high-temperature superconductivity in the copper oxides is reviewed as a phenomenon occurring in narrow two-dimensional bands where the time for an electron transfer between like atoms is comparable to the period of an optical-mode lattice vibration. A family of iron pnictides containing layers of iron atoms may not require an alternative explanation of its high-temperature superconductivity.

J.B. Goodenough

2013-01-01T23:59:59.000Z

309

Solar Photovoltaic SPECIFICATION, CHECKLIST AND GUIDE  

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

Photovoltaic Photovoltaic SPECIFICATION, CHECKLIST AND GUIDE Renewable Energy Ready Home Renewable Energy Ready Home SOLAR PHOTOVOLTAIC SPECIFICATION, CHECKLIST AND GUIDE i Table of Contents About the Renewable Energy Ready Home Specifications Assumptions of the RERH Solar Photovoltaic Specification .............................................................................. 1 Builder and Specification Limitations ............................................................................................................. 2

310

URANIUM IN ALKALINE ROCKS  

E-Print Network (OSTI)

Parts of Eastern Ontario and Western Quebec. Field Guide toof the Oka Area, Quebec." Geol. Assn. Can. Guidebook, ppField Guide to the Oka Area," Quebec Department of Natural

Murphy, M.

2011-01-01T23:59:59.000Z

311

URANIUM IN ALKALINE ROCKS  

E-Print Network (OSTI)

Danish Atomic Energy Commission, Research Establishment, Ris^, Denmark, published by the International Atomic Energy Agency,

Murphy, M.

2011-01-01T23:59:59.000Z

312

URANIUM IN ALKALINE ROCKS  

E-Print Network (OSTI)

^ (0H) , also with rare-earth elements. Commonly altered andthe radio- and rare-earth elements. However, there iscontain the radio- and rare-earth elements. In general then,

Murphy, M.

2011-01-01T23:59:59.000Z

313

URANIUM IN ALKALINE ROCKS  

E-Print Network (OSTI)

Greenland," in Uranium Exploration Geology, Int. AtomicOklahoma," 1977 Nure Geology Uranium Symposium, Igneous HostMcNeil, M. , 1977. "Geology of Brazil's Uranium and Thorium

Murphy, M.

2011-01-01T23:59:59.000Z

314

Temperature differential detection device  

DOE Patents (OSTI)

A temperature differential detection device for detecting the temperature differential between predetermined portions of a container wall is disclosed as comprising a Wheatstone bridge circuit for detecting resistance imbalance with a first circuit branch having a first elongated wire element mounted in thermal contact with a predetermined portion of the container wall, a second circuit branch having a second elongated wire element mounted in thermal contact with a second predetermined portion of a container wall with the wire elements having a predetermined temperature-resistant coefficient, an indicator interconnected between the first and second branches remote from the container wall for detecting and indicating resistance imbalance between the first and second wire elements, and connector leads for electrically connecting the wire elements to the remote indicator in order to maintain the respective resistance value relationship between the first and second wire elements. The indicator is calibrated to indicate the detected resistance imbalance in terms of a temperature differential between the first and second wall portions.

Girling, Peter M. (Allentown, PA)

1986-01-01T23:59:59.000Z

315

Chemistry at High Temperatures  

Science Journals Connector (OSTI)

...347 the condensed phase. Both cases are...show the opposite behavior. These predictions...vapors. Condensed phase B203 B + B203 02...complex silicates and hydrates in high-temperature...characterized by phase diagrams (derived...doubt that thou-sands of new chemical materials...

John L. Margrave

1962-02-02T23:59:59.000Z

316

High Temperature Membrane Working Group  

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

The High Temperature Membrane Working Group consists of government, industry, and university researchers interested in developing high temperature membranes for fuel cells.

317

Diagnosis of Acid Placement from Downhole Temperature Measurements  

E-Print Network (OSTI)

-dependent function for estimating injection temperature D depth D(t) time function in the wormhole model Dtotal total depth of the wellbore section d observed data vector e residual vector ek specific kinetic energy ep specific potential energy e...R specific internal energy of rock es specific internal energy of acid solution E energy viii Ereaction energy released by reaction in the control volume f objective function f(t) time-dependent function in Ramey’s equation G sensitivity matrix...

Tan, Xuehao

2012-10-19T23:59:59.000Z

318

Project X functional requirements specification  

SciTech Connect

Project X is a multi-megawatt proton facility being developed to support a world-leading program in Intensity Frontier physics at Fermilab. The facility is designed to support programs in elementary particle and nuclear physics, with possible applications to nuclear energy research. A Functional Requirements Specification has been developed in order to establish performance criteria for the Project X complex in support of these multiple missions, and to assure that the facility is designed with sufficient upgrade capability to provide U.S. leadership for many decades to come. This paper will briefly review the previously described Functional Requirements, and then discuss their recent evolution.

Holmes, S.D.; Henderson, S.D.; Kephart, R.; Kerby, J.; Kourbanis, I.; Lebedev, V.; Mishra, S.; Nagaitsev, S.; Solyak, N.; Tschirhart, R.; /Fermilab

2012-05-01T23:59:59.000Z

319

Developing Biological Specifications for Fish Friendly Turbines...  

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

Developing Biological Specifications for Fish Friendly Turbines Developing Biological Specifications for Fish Friendly Turbines This factsheet explains studies conducted in a...

320

" Row: Specific Energy-Management Activities...  

U.S. Energy Information Administration (EIA) Indexed Site

4 Number of Establishments by Participation in Specific Energy-Management Activities, 2006;" " Level: National Data; " " Row: Specific Energy-Management Activities within NAICS...

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

" Row: Specific Energy-Management Activities...  

U.S. Energy Information Administration (EIA) Indexed Site

4 Number of Establishments by Participation in Specific Energy-Management Activities, 2010;" " Level: National Data; " " Row: Specific Energy-Management Activities within NAICS...

322

Alternative Fuels Data Center: Biofuels Quality Specifications  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Biofuels Quality Biofuels Quality Specifications to someone by E-mail Share Alternative Fuels Data Center: Biofuels Quality Specifications on Facebook Tweet about Alternative Fuels Data Center: Biofuels Quality Specifications on Twitter Bookmark Alternative Fuels Data Center: Biofuels Quality Specifications on Google Bookmark Alternative Fuels Data Center: Biofuels Quality Specifications on Delicious Rank Alternative Fuels Data Center: Biofuels Quality Specifications on Digg Find More places to share Alternative Fuels Data Center: Biofuels Quality Specifications on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biofuels Quality Specifications The Tennessee Department of Agriculture may inspect and test biofuels under

323

Rechargeable alkaline zinc/ferricyanide battery, Phase III. Final report, 26 October 1981-18 September 1982  

SciTech Connect

Project effort was concentrated primarily on technical advancement of the alkaline zinc/ferricyanide battery to meet goals of scale-up and demonstration of solid-reactant storage with 1000-cm/sup 2/ full-scale cells; development of a conceptual engineering design for a 50-kW solar-photovoltaic storage system; demonstration of solar acceptance random cycling; and determination of cycle life of cells operating at 70- and 200-mA.h/cm/sup 2/ capacity. These goals were met in the design, fabrication, and cyclic testing of a 1000-cm/sup 2/ cell having a flow aspect ratio of 2:1. After some design optimization, energy efficiency in 2N NaOH at 43/sup 0/C is 74 to 78 percent. Testing has been in conjunction with a crystallizer/reservoir designed with a capacity of 300 mA.h/cm/sup 2/ that delivers solids-free electrolyte to the cell. A conceptual engineering design for a 50-kW solar storage-battery system has been formulated with mass and thermal balances computed. Single-cell (60-cm/sup 2/) cycle life tests are in progress at 35 mA/cm/sup 2/ with 2N NaOH electrolyte with Nafion N-125 separator at 40/sup 0/C. Over 800 cycles at 70 mA.h/cm/sup 2/ capacity with mean energy efficiency of 76.6 +- 2.1 percent have been logged. Mean voltaic and coulombic efficiencies are 83.3 +- 1.8 percent and 92.0 +- 1.8 percent, respectively. Single-cell (60-cm/sup 2/) cycle life tests run under similar conditions at 249 +- 45 mA.h/cm/sup 2/ have logged over 220 cycles with mean energy efficiency of 75.3 +- 5.1 percent. Mean voltaic and coulombic efficiencies are 84.7 +- 2.0 and 89.0 +- 6.0, respectively.

Adams, G.B.; Hollandsworth, R.P.; Webber, B.D.

1983-02-01T23:59:59.000Z

324

Alternative Fuels Data Center: E85 Specifications  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

E85 Specifications to E85 Specifications to someone by E-mail Share Alternative Fuels Data Center: E85 Specifications on Facebook Tweet about Alternative Fuels Data Center: E85 Specifications on Twitter Bookmark Alternative Fuels Data Center: E85 Specifications on Google Bookmark Alternative Fuels Data Center: E85 Specifications on Delicious Rank Alternative Fuels Data Center: E85 Specifications on Digg Find More places to share Alternative Fuels Data Center: E85 Specifications on AddThis.com... More in this section... Ethanol Basics Blends Specifications Production & Distribution Feedstocks Related Links Benefits & Considerations Stations Vehicles Laws & Incentives E85 Specifications ASTM International developed specifications for E85-a gasoline-ethanol blend containing 51% to 83% ethanol-to ensure proper vehicle starting,

325

Determining average bed temperature of nonisothermal fixed-bed hydrotreater  

Science Journals Connector (OSTI)

Employing three catalysts in three parallel pilot-scale fixed-bed reactors, hydrotreating experiments were performed in both isothermal and ascending temperature modes to investigate kinetics and to determine a representative bed temperature. Assuming 1.5th-order for hydrodesulfurization (HDS) and 1st-order for both hydrodenitrogenation (HDN) and mild hydrocracking (MHC), kinetic parameters were obtained from the isothermal mode operation. With the activation energies from isothermal operations, equivalent isothermal temperatures (EITs) in the ascending mode operations were established for specific HDS, HDN and MHC. Employing 19 thermocouple readouts in the catalyst beds and applying an Arrhenius-type rate equation containing the same activation energy, the representative bed temperature was determined. The temperature so determined is called kinetic EIT. The kinetic EIT was found to be the best to represent the nonisothermal bed temperature. The kinetic EIT has been applied to monitoring the catalyst activity in commercial hydrotreating units.

Sok Yui; John Adjaye

2004-01-01T23:59:59.000Z

326

High Temperature Membrane Working Group  

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

This presentation provides an overview of the High Temperature Membrane Working Group Meeting in May 2007.

327

Processing of LEU targets for {sup 99}Mo production: Dissolution of U{sub 3}Si{sub 2} targets by alkaline hydrogen peroxide  

SciTech Connect

Low-enriched uranium silicide targets designed to recover fission product {sup 99}Mo were dissolved in alkaline hydrogen peroxide (H{sub 2}O{sub 2} plus NaOH) at about 90C. Sintering of matrix aluminum powder during irradiation and heat treatment retarded aluminum dissolution and prevented silicide particle dispersion. Gas evolved during dissolution is suspected to adhere to particles and block hydroxide ion contact with aluminum. Reduction of base concentrations from 5M to O.lM NaOH yielded similar silicide dissolution and peroxide destruction rates, simplifying later processing. Future work in particle dispersion enhancement, {sup 99}Mo separation, and waste disposal is also discussed.

Buchholz, B.A.; Vandegrift, G.F.

1995-09-01T23:59:59.000Z

328

Biomass Burning Observation Project Specifically,  

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

Burning Observation Project Burning Observation Project Specifically, the aircraft will obtain measurements of the microphysical, chemical, hygroscopic, and optical properties of aerosols. Data captured during BBOP will help scientists better understand how aerosols combine and change at a variety of distances and burn times. Locations Pasco, Washington. From July through September, the G-1 will be based out of its home base in Washington. From this location, it can intercept and measure smoke plumes from naturally occurring uncontrolled fires across Washington, Oregon, Idaho, Northern California, and Western Montana. Smoke plumes aged 0-5 hours are the primary targets for this phase of the campaign. Memphis, Tennessee. In October, the plane moves to Tennessee to sample prescribed

329

VEHICLE DETAILS AND BATTERY SPECIFICATIONS  

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

RR0DF106791 RR0DF106791 Hybrid Propulsion System: Mild Parallel Belt-Alternator Starter (BAS) Number of Electric Machines: 1 Motor: 15 kW (peak), AC induction Battery Specifications Manufacturer: Hitachi Type: Cylindrical Lithium-ion Number of Cells: 32 Nominal Cell Voltage: 3.6 V Nominal System Voltage: 115.2 V Rated Pack Capacity: 4.4 Ah Maximum Cell Charge Voltage 2 : 4.10 V Minimum Cell Discharge Voltage 2 : 3.00 V Thermal Management: Active - Forced air Pack Weight: 65 lb BEGINNING-OF-TEST: BATTERY LABORATORY TEST RESULTS SUMMARY Vehicle Mileage and Testing Date Vehicle Odometer: 5,715 mi Date of Test: January 8, 2013 Static Capacity Test Measured Average Capacity: 3.98 Ah Measured Average Energy Capacity: 460 Wh HPPC Test Pulse Discharge Power @ 50% DOD

330

VEHICLE DETAILS AND BATTERY SPECIFICATIONS  

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

RRXDF106605 RRXDF106605 Hybrid Propulsion System: Mild Parallel Belt-Alternator Starter (BAS) Number of Electric Machines: 1 Motor: 15 kW (peak), AC induction Battery Specifications Manufacturer: Hitachi Type: Cylindrical Lithium-ion Number of Cells: 32 Nominal Cell Voltage: 3.6 V Nominal System Voltage: 115.2 V Rated Pack Capacity: 4.4 Ah Maximum Cell Charge Voltage 2 : 4.10 V Minimum Cell Discharge Voltage 2 : 3.00 V Thermal Management: Active - Forced air Pack Weight: 65 lb BEGINNING-OF-TEST: BATTERY LABORATORY TEST RESULTS SUMMARY Vehicle Mileage and Testing Date Vehicle Odometer: 4,244 mi Date of Test: January 9, 2013 Static Capacity Test Measured Average Capacity: 3.88 Ah Measured Average Energy Capacity: 450 Wh HPPC Test Pulse Discharge Power @ 50% DOD

331

Specific test and evaluation plan  

SciTech Connect

The purpose of this Specific Test and Evaluation Plan (STEP) is to provide a detailed written plan for the systematic testing of modifications made to the 241-AX-B Valve Pit by the W-314 Project. The STEP develops the outline for test procedures that verify the system`s performance to the established Project design criteria. The STEP is a lower tier document based on the W-314 Test and Evaluation Plan (TEP). Testing includes Validations and Verifications (e.g., Commercial Grade Item Dedication activities), Factory Acceptance Tests (FATs), installation tests and inspections, Construction Acceptance Tests (CATs), Acceptance Test Procedures (ATPs), Pre-Operational Test Procedures (POTPs), and Operational Test Procedures (OTPs). It should be noted that POTPs are not required for testing of the transfer line addition. The STEP will be utilized in conjunction with the TEP for verification and validation.

Hays, W.H.

1998-03-20T23:59:59.000Z

332

Renewable Energy Ready Home Solar Photovoltaic Specifications  

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

Solar Photovoltaic Specification, Checklist and Guide, from the U.S. Environmental Protection Agency.

333

Temperature modeling in a total knee joint replacement using patient-specific kinematics  

E-Print Network (OSTI)

conductivity. A survey of thermal conductivity for current and proposed scratch resistant femoral component implant materials shows variations greater than an order of magnitude. KEY WORDS: thermal modeling dynamic contact and thermal analyses. The multibody dynamic simulations of two activities (gait and stair

Sawyer, Wallace

334

Rate of decrease of the specific surface area of dry snow: Isothermal and temperature gradient conditions  

E-Print Network (OSTI)

crystals. These effects drive sublimation/condensation cycles that modify the sizes and shapes of snow through sublimation/condensation and adsorption/desorption cycles. Adsorbed gases can diffuse inside snow variations must be described in models of snow physics and chemistry [Flin et al., 2003; Legagneux and Domine

Domine, Florent

335

Element-specific study of the temperature dependent magnetization of Co-Mn-Sb thin films  

E-Print Network (OSTI)

and ? ai its total atomic absorption cross section. Thisi and on the to- tal atomic absorption cross section ? ai .

Schmalhorst, J.

2009-01-01T23:59:59.000Z

336

Water Recycling removal using temperature-sensitive hydronen  

SciTech Connect

The overall objective of this project was to study the proposed Water Recycling/Removal Using Temperature-Sensitive Hydrogels. The main element of this technology is the design of a suitable hydrogel that can perform needed water separation for pulp and paper industry. The specific topics studied are to answer following questions: (a) Can water be removed using hydrogel from large molecules such as lignin? (b) Can the rate of separation be made faster? (c) What are the molecular interactions with hydrogel surface? (d) Can a hydrogel be designed for a high ionic strength and high temperature? Summary of the specific results are given.

Rana B. Gupta

2002-10-30T23:59:59.000Z

337

High temperature detonator  

DOE Patents (OSTI)

A detonator assembly is provided which is usable at high temperatures about 300.degree. C. A detonator body is provided with an internal volume defining an anvil surface. A first acceptor explosive is disposed on the anvil surface. A donor assembly having an ignition element, an explosive material, and a flying plate, are placed in the body effective to accelerate the flying plate to impact the first acceptor explosive on the anvil for detonating the first acceptor explosive. A second acceptor explosive is eccentrically located in detonation relationship with the first acceptor explosive to thereafter effect detonation of a main charge.

Johnson, James O. (Los Alamos, NM); Dinegar, Robert H. (Los Alamos, NM)

1988-01-01T23:59:59.000Z

338

Thermionic converter temperature controller  

SciTech Connect

A method and apparatus for controlling the temperature of a thermionic reactor over a wide range of operating power, including a thermionic reactor having a plurality of integral cesium reservoirs, a honeycomb material disposed about the reactor which has a plurality of separated cavities, a solid sheath disposed about the honeycomb material and having an opening therein communicating with the honeycomb material and cavities thereof, and a shell disposed about the sheath for creating a coolant annulus therewith so that the coolant in the annulus may fill the cavities and permit nucleate boiling during the operation of the reactor.

Shaner, Benjamin J. (McMurray, PA); Wolf, Joseph H. (Pittsburgh, PA); Johnson, Robert G. R. (Trafford, PA)

2001-04-24T23:59:59.000Z

339

Thermionic Converter Temperature Controller  

SciTech Connect

A method and apparatus for controlling the temperature of a thermionic reactor over a wide range of operating power, including a thermionic reactor having a plurality of integral cesium reservoirs, a honeycomb material disposed about the reactor which has a plurality of separated cavities, a solid sheath disposed about the honeycomb material and having an opening therein communicating with the honeycomb material and cavities thereof, and a shell disposed about the sheath for creating a coolant annulus therewith so that the coolant in the annulus may fill the cavities and permit nucleate boiling during the operation of the reactor.

Shaner,B. J.; Wolf, Joseph H.; Johnson, Robert G. R.

1999-08-23T23:59:59.000Z

340

Drexel University Temperature Sensors  

SciTech Connect

This document summarizes background information and presents results related to temperature measurements in the Advanced Test Reactor (ATR) National Scientific User Facility (NSUF) Drexel University Project 31091 irradiation. The objective of this test was to assess the radiation performance of new ceramic materials for advanced reactor applications. Accordingly, irradiations of transition metal carbides and nitrides were performed using the Hydraulic Shuttle Irradiation System (HSIS) in the B-7 position and in static capsules inserted into the A-3 and East Flux Trap Position 5 locations of the ATR.

K. L. Davis; D. L. Knudson; J. L. Rempe; B. M. Chase

2014-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Crowdsourcing urban air temperatures from smartphone battery?temperatures  

E-Print Network (OSTI)

Accurate air temperature observations in urban areas are important for meteorology and energy demand planning. They are indispensable to study the urban heat island effect and the adverse effects of high temperatures on ...

Overeem, A.

342

Alternative Fuels Data Center: ASTM Biodiesel Specifications  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

ASTM Biodiesel ASTM Biodiesel Specifications to someone by E-mail Share Alternative Fuels Data Center: ASTM Biodiesel Specifications on Facebook Tweet about Alternative Fuels Data Center: ASTM Biodiesel Specifications on Twitter Bookmark Alternative Fuels Data Center: ASTM Biodiesel Specifications on Google Bookmark Alternative Fuels Data Center: ASTM Biodiesel Specifications on Delicious Rank Alternative Fuels Data Center: ASTM Biodiesel Specifications on Digg Find More places to share Alternative Fuels Data Center: ASTM Biodiesel Specifications on AddThis.com... More in this section... Biodiesel Basics Blends Production & Distribution Specifications Related Links Benefits & Considerations Stations Vehicles Laws & Incentives ASTM Biodiesel Specifications These tables show selected ASTM requirements for B100 and B6 to B20. Note

343

Alternative Fuels Data Center: Hydrogen Fuel Specifications  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Hydrogen Fuel Hydrogen Fuel Specifications to someone by E-mail Share Alternative Fuels Data Center: Hydrogen Fuel Specifications on Facebook Tweet about Alternative Fuels Data Center: Hydrogen Fuel Specifications on Twitter Bookmark Alternative Fuels Data Center: Hydrogen Fuel Specifications on Google Bookmark Alternative Fuels Data Center: Hydrogen Fuel Specifications on Delicious Rank Alternative Fuels Data Center: Hydrogen Fuel Specifications on Digg Find More places to share Alternative Fuels Data Center: Hydrogen Fuel Specifications on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Hydrogen Fuel Specifications The California Department of Food and Agriculture, Division of Measurement Standards (DMS) established interim specifications for hydrogen fuels for

344

Method for Synthesizing Extremeley High Temperature Melting Materials  

DOE Patents (OSTI)

The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as borides, carbides and transition-metal, lanthanide and actinide oxides, using an Aerodynamic Levitator and a laser. The object of the invention is to provide a method for synthesizing extremely high-temperature melting materials that are otherwise difficult to produce, without the use of containers, allowing the manipulation of the phase (amorphous/crystalline/metastable) and permitting changes of the environment such as different gaseous compositions.

Saboungi, Marie-Louise and Glorieux, Benoit

2005-11-22T23:59:59.000Z

345

Method For Synthesizing Extremely High-Temperature Melting Materials  

DOE Patents (OSTI)

The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as borides, carbides and transition-metal, lanthanide and actinide oxides, using an Aerodynamic Levitator and a laser. The object of the invention is to provide a method for synthesizing extremely high-temperature melting materials that are otherwise difficult to produce, without the use of containers, allowing the manipulation of the phase (amorphous/crystalline/metastable) and permitting changes of the environment such as different gaseous compositions.

Saboungi, Marie-Louise (Chicago, IL); Glorieux, Benoit (Perpignan, FR)

2005-11-22T23:59:59.000Z

346

Method for synthesizing extremely high-temperature melting materials  

SciTech Connect

The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as carbides and transition-metal, lanthanide and actinide oxides, using an aerodynamic levitator and a laser. The object of the invention is to provide a method for synthesizing extremely high-temperature melting materials that are otherwise difficult to produce, without the use of containers, allowing the manipulation of the phase (amorphous/crystalline/metastable) and permitting changes of the environment such as different gaseous compositions.

Saboungi, Marie-Louise (Chicago, IL); Glorieux, Benoit (Perpignan, FR)

2007-11-06T23:59:59.000Z

347

The Greenhouse Effect Temperature Equilibrium  

E-Print Network (OSTI)

The Greenhouse Effect #12;Temperature Equilibrium The Earth is in equilibrium with the Sun temperature is about 14C, or 287K. The 40K difference is due to the greenhouse effect. Essentially all

Walter, Frederick M.

348

LOW TEMPERATURE CATHODE SUPPORTED ELECTROLYTES  

SciTech Connect

This project has three main goals: Thin Films Studies, Preparation of Graded Porous Substrates and Basic Electrical Characterization and testing of Planar Single Cells. This period has continued to address the problem of making dense 1/2 to 5 {micro}m thick dense layers on porous substrates (the cathode LSM). Our current status is that we are making structures of 2-5 cm{sup 2} in area, which consist of either dense YSZ or CGO infiltrated into a 2-5 {micro}m thick 50% porous layer made of either nanoncrystalline CGO or YSZ powder. This composite structure coats a macroporous cathode or anode; which serves as the structural element of the bi-layer structure. These structures are being tested as SOFC elements. A number of structures have been evaluated both as symmetrical and as button cell configuration. Results of this testing indicates that the cathodes contribute the most to cell losses for temperatures below 750 C. In this investigation different cathode materials were studied using impedance spectroscopy of symmetric cells and IV characteristics of anode supported fuel cells. Cathode materials studied included La{sub 0.8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (LSCF), La{sub 0.7}Sr{sub 0.2}MnO{sub 3} (LSM), Pr{sub 0.8}Sr{sub 0.2}Fe{sub 0.8}O{sub 3} (PSCF), Sm{sub 0.8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (SSCF), and Yb{sub .8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (SSCF). A new technique for filtering the Fourier transform of impedance data was used to increase the sensitivity of impedance analysis. By creating a filter specifically for impedance spectroscopy the resolution was increased. The filter was tailored to look for specific circuit elements like R//C, Warburg, or constant phase elements. As many as four peaks can be resolved using the filtering technique on symmetric cells. It may be possible to relate the different peaks to material parameters, like the oxygen exchange coefficient. The cathode grouped in order from lowest to highest ASR is LSCF < PSCF < SSCF < YSCF < LSM. The button cell results agree with this ordering indicating that this is an important tool for use in developing our understanding of electrode behavior in fuel cells.

Harlan U. Anderson; Fatih Dogan; Vladimir Petrovsky

2002-03-31T23:59:59.000Z

349

Low Temperature Proton Conductivity  

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

and and MEAs at Freezing Temperatures Thomas A. Zawodzinski, Jr. Case Western Reserve University Cleveland, Ohio 2 Freezing Fuel Cells: Impact on MEAS Below 0 o C *Transport processes/motions slow down: questions re: lower conductivity,water mobility etc *Residual water will have various physical effects in different portions of the MEA questions re: durability of components 3 3 'States' of Water in Proton Conductors ? Freezing (bulk), bound freezable, bound non freezable water states claimed based on DSC * Freezing water more mobile, allegedly important for high conductivity Analysis common for porous systems Does the presence of these states matter? Why? 4 'State of Water' in PEMs At T < 0 o C *'Liquid-like' water freezes *'Non-freezing' fraction: water of solvation at pore

350

Radiation Minimum Temperatures  

Science Journals Connector (OSTI)

Frost resulting from cooling of vegetation by nocturnal radiation is a serious agricultural problem. Because of the number of variables involved attacks on this problem from a purely theoretical point of view have met with only moderate success. It seems logical to suppose that an instrument might be devised which would speed up the natural radiation processes and enable an observer to obtain in a few hours a measure of the cooling which occurs naturally over a period of 12 to 14 hr. Such an instrument could serve as a frost warning device. This paper describes the construction of a radiation device and presents experimental evidence to show that it can be used as a predictor of freezing temperatures at vegetation level.

Francis K. Davis Jr.

1957-01-01T23:59:59.000Z

351

High-Temperature Water Splitting  

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

High-temperature water splitting (a "thermochemical" process) is a long-term technology in the early stages of development.

352

Battery system with temperature sensors  

DOE Patents (OSTI)

A battery system to monitor temperature includes at least one cell with a temperature sensing device proximate the at least one cell. The battery system also includes a flexible member that holds the temperature sensor proximate to the at least one cell.

Wood, Steven J.; Trester, Dale B.

2012-11-13T23:59:59.000Z

353

Oak Ridge Site Specific Advisory Board Meetings  

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

Lists links to the Oak Ridge Site Specific Advisory Board Meetings. The links provide meeting documents available for download.

354

Oak Ridge Site Specific Advisory Board Contacts  

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

Lists Oak Ridge Site Specific Advisory Board contact information including mailing address, phone numbers, and contact email addresses.

355

FTCP Site Specific Information- Carlsbad Field Office  

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

Site Specific Information includes Annual Workforce Analysis & Staffing Plan Reports, and Technical Qualification Program (TQP) Self-Assessment.

356

Perspectives on Temperature in the Pacific Northwest's Fresh Waters  

SciTech Connect

This report provides a perspective on environmental water temperatures in the Pacific Northwest as they relate to the establishment of water temperature standards by the state and their review by the US Environmental Protection Agency. It is a companion to other detailed reviews of the literature on thermal effects on organisms important to the region. Many factors, both natural and anthropogenic, affect water temperatures in the region. Different environmental zones have characteristic temperatures and mechanisms that affect them. There are specific biotic adaptations to environmental temperatures. Life-cycle strategies of salmonids, in particular, are attuned to annual temperature patterns. Physiological and behavioral requirements on key species form the basis of present water temperature criteria, but may need to be augmented with more concern for environmental settings. There are many issues in the setting of standards, and these are discussed. There are also issues in compliance. Alternative temperature-regulating mechanisms are discussed, as are examples of actions to control water temperatures in the environment. Standards-setting is a social process for which this report should provide background and outline options, alternatives, limitations, and other points for discussion by those in the region.

Coutant, C.C.

1999-06-01T23:59:59.000Z

357

Hot Pot Contoured Temperature Gradient Map  

SciTech Connect

Temperature gradient contours derived from Oski temperature gradient hole program and from earlier published information.

Lane, Michael

2013-06-28T23:59:59.000Z

358

Hot Pot Contoured Temperature Gradient Map  

DOE Data Explorer (OSTI)

Temperature gradient contours derived from Oski temperature gradient hole program and from earlier published information.

Lane, Michael

359

UNIT SPECIFIC PLAN FORM INVESTIGATOR INFORMATION  

E-Print Network (OSTI)

performed in your work area. This information is requested to help EHS review your Unit Specific Plan Form or stored in your work areas, a" Standard Operating Procedure" (SOP), Appendix A of the Unit Specific Plan1 UNIT SPECIFIC PLAN FORM INVESTIGATOR INFORMATION Principal Investigator: E-Mail: Department

Maroncelli, Mark

360

Defibering and specific energy consumption in bale pulpers  

SciTech Connect

In this paper, the defibering and the specific energy consumption (SEC) for bale pulping of old corrugated containers and supercalendered paper are studied. Experimental variables were pulper dimensions, rotor shape, process temperature, and pulp consistency. The extent of defibering was monitored by measuring Somerville shives, and SEC was determined for a range of pulping conditions. It was found that SEC is reduced by at least 50% when process temperature is increased from 20{degrees}C to 60{degrees}C and by about 30% when pulp consistency is increased from 3.5% to 7%. The results also showed that defibering is increased by rotors that generate shear forces both radially and tangentially. The more swiftly the mass bale and the flakes are wetted, the lower will be the SEC. The rheology of low-consistency water-fiber suspensions is also discussed, with emphasis on how shear affects defibering during the pulping process.

Savolainen, A. (Tampere Univ. of Technology, Lab. of Process, Technology, P.O. Box 527, 33101 Tampere (FI)); Jusila, T.; Nikula, S. (Tampella Papertech Oy, P.O. Box 56, LE2 33701 Tampere (FI))

1991-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Gas temperature and electron temperature measurements by emission spectroscopy for an atmospheric microplasma  

SciTech Connect

A microplasma suitable for material processing at atmospheric pressure in argon and argon-oxygen mixtures is being studied here. The microplasma is ignited by a high voltage dc pulse and sustained by low power (1-5 W) at 450 MHz. the mechanisms responsible for sustaining the microplasma require a more detailed analysis, which will be the subject of further study. Here it is shown that the microplasma is in nonequilibrium and appears to be in glow mode. The effect of power and oxygen content is also analyzed in terms of gas temperature and electron temperature. Both the gas temperature and the electron temperature have been determined by spectral emission and for the latter a very simple method has been used based on a collisional-radiative model. It is observed that power coupling is affected by a combination of factors and that prediction and control of the energy flow are not always straightforward even for simple argon plasmas. Varying gas content concentration has shown that oxygen creates a preferential energy channel towards increasing the gas temperature. Overall the results have shown that combined multiple diagnostics are necessary to understand plasma characteristics and that spectral emission can represent a valuable tool for tailoring microplasma to specific processing requirements.

Mariotti, Davide; Shimizu, Yoshiki; Sasaki, Takeshi; Koshizaki, Naoto [Nanoarchtectonics Research Center (NARC), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 (Japan)

2007-01-01T23:59:59.000Z

362

Quantum Chemistry at Finite Temperature  

E-Print Network (OSTI)

In this article, we present emerging fields of quantum chemistry at finite temperature. We discuss its recent developments on both experimental and theoretical fronts. First, we describe several experimental investigations related to the temperature effects on the structures, electronic spectra, or bond rupture forces for molecules. These include the analysis of the temperature impact on the pathway shifts for the protein unfolding by atomic force microscopy (AFM), the temperature dependence of the absorption spectra of electrons in solvents, and the temperature influence over the intermolecular forces measured by the AFM. On the theoretical side, we review advancements made by the author in the coming fields of quantum chemistry at finite temperature. Starting from the Bloch equation, we have derived the sets of hierarchy equations for the reduced density operators in both canonical and grand canonical ensembles. They provide a law according to which the reduced density operators vary in temperature for the identical and interacting many-body systems. By taking the independent particle approximation, we have solved the equations in the case of a grand canonical ensemble, and obtained an energy eigenequation for the molecular orbitals at finite temperature. The explicit expression for the temperature-dependent Fock operator is also given. They form a mathematical foundation for the examination of the molecular electronic structures and their interplay with finite temperature. Moreover, we clarify the physics concerning the temperature effects on the electronic structures or processes of the molecules, which is crucial for both theoretical understanding and computation. Finally, ....

Liqiang Wei

2006-05-23T23:59:59.000Z

363

Affinity Purification of Plasmid DNA by Temperature-Triggered Precipitation  

E-Print Network (OSTI)

Affinity Purification of Plasmid DNA by Temperature-Triggered Precipitation Jan Kostal, Ashok purification method, which takes advantage of the DNA- binding affinity and specificity of the bacterial increasing the temper- ature, ELP undergoes a reversible phase transition from water-soluble forms

Chen, Wilfred

364

Low temperature magnetic transitions of single crystal HoBi  

SciTech Connect

We present resistivity, specific heat and magnetization measurements in high quality single crystals of HoBi, with a residual resistivity ratio of 126. We find, from the temperature and field dependence of the magnetization, an antiferromagnetic transition at 5.7 K, which evolves, under magnetic fields, into a series of up to five metamagnetic phases.

Fente, A. [Universidad Autonoma de Madrid; Suderow, H. [Universidad Autonoma de Madrid; Vieira, S. [Universidad Autonoma de Madrid; Nemes, N. M. [Instituto de Ciencia de Materiales de Madrid; Garcia-Hernandez, M. [Instituto de Ciencia de Materiales de Madrid; Budko, Sergei L. [Ames Laboratory; Canfield, Paul C. [Ames Laboratory

2013-09-04T23:59:59.000Z

365

On the isobaric specific heat capacity of natural gas  

Science Journals Connector (OSTI)

Abstract A colorimeter equipped with a gas booster in conjunction with a PVT cell was used to measure the heat capacity of natural gas with different amounts of impurities. Based on new experimental and literature data, a general investigation of the isobaric specific heat capacity was carried out using the Jarrahian–Heidaryan equation of state (J–H-EOS). A model was obtained that is valid in wide ranges of pressures (0.1–40 MPa) and temperatures (250–414 K). The arithmetic average of the model’s absolute error is acceptable in engineering calculations and has superiority over other methods in its class.

Azad Jarrahian; Hamid Reza Karami; Ehsan Heidaryan

2014-01-01T23:59:59.000Z

366

Ergonomic Chair Specifications These specifications are intended to address most employees. Employees that have  

E-Print Network (OSTI)

Ergonomic Chair Specifications These specifications are intended to address most employees should consult Environmental Health & Safety if they require a special ergonomic chair. a. Any chair must

de Lijser, Peter

367

Complete genome sequence of the halophilic bacterium Spirochaeta africana type strain (Z-7692T) from the alkaline Lake Magadi in the East African Rift  

SciTech Connect

Spirochaeta africana Zhilina et al. 1996 is an anaerobic, aerotolerant, spiral-shaped bacte- rium that is motile via periplasmic flagella. The type strain of the species, Z-7692T, was iso- lated in 1993 or earlier from a bacterial bloom in the brine under the trona layer in a shallow lagoon of the alkaline equatorial Lake Magadi in Kenya. Here we describe the features of this organism, together with the complete genome sequence, and annotation. Considering the pending reclassification of S. caldaria to the genus Treponema, S. africana is only the second 'true' member of the genus Spirochaeta with a genome-sequenced type strain to be pub- lished. The 3,285,855 bp long genome of strain Z-7692T with its 2,817 protein-coding and 57 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Liolios, Konstantinos [U.S. Department of Energy, Joint Genome Institute; Abt, Birte [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Scheuner, Carmen [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Teshima, Hazuki [Los Alamos National Laboratory (LANL); Held, Brittany [Los Alamos National Laboratory (LANL); Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Nolan, Matt [U.S. Department of Energy, Joint Genome Institute; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Deshpande, Shweta [U.S. Department of Energy, Joint Genome Institute; Cheng, Jan-Fang [U.S. Department of Energy, Joint Genome Institute; Tapia, Roxanne [Los Alamos National Laboratory (LANL); Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Pagani, Ioanna [U.S. Department of Energy, Joint Genome Institute; Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Mavromatis, K [U.S. Department of Energy, Joint Genome Institute; Mikhailova, Natalia [U.S. Department of Energy, Joint Genome Institute; Huntemann, Marcel [U.S. Department of Energy, Joint Genome Institute; Pati, Amrita [U.S. Department of Energy, Joint Genome Institute; Chen, Amy [U.S. Department of Energy, Joint Genome Institute; Palaniappan, Krishna [U.S. Department of Energy, Joint Genome Institute; Land, Miriam L [ORNL; Rohde, Manfred [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Tindall, Brian [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Goker, Markus [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Bristow, James [U.S. Department of Energy, Joint Genome Institute; Eisen, Jonathan [U.S. Department of Energy, Joint Genome Institute; Markowitz, Victor [U.S. Department of Energy, Joint Genome Institute; Hugenholtz, Philip [U.S. Department of Energy, Joint Genome Institute; Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; Klenk, Hans-Peter [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute

2013-01-01T23:59:59.000Z

368

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

SciTech Connect

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

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

1993-10-01T23:59:59.000Z

369

Evaluation of packed-bed and fluidized-bed cell technology for the destruction and removal of contaminants in alkaline waste solutions. Final report  

SciTech Connect

Disposing of the large quantity of nuclear waste that has been produced within the DOE complex is an area of active research and development. Electrochemical processes have been reported for the treatment of alkaline wastes including the destruction of nitrate and nitrite and the removal of metals such as Tc and Ru. Electrolytic recovery of metals from dilute solution has been reported using conventional porous electrodes such as felt electrode and reticulated electrode, but use of such electrodes is limited. The pores of such electrodes become blocked as a consequence of metal deposition. If an attempt is made to regenerate these electrodes by dissolution of the deposited metals, oxygen evolution on the matrix competes with dissolution of metals deposited within the pores. On the other hand, the use of three dimensional packed-bed and fluidized-bed electrodes having large surface area per unit volume would offer an improvement on felt or reticulated system because of the greater ease of regeneration.

Hobbs, D.T. [Westinghouse Savannah River Co., Aiken, SC (United States); Bockris, J.O.M.; Kim, Jinseong [Texas A& M Univ., College Station, TX (United States). Surface Electrochemistry Laboratory

1995-12-31T23:59:59.000Z

370

In situ generation of steam and alkaline surfactant for enhanced oil recovery using an exothermic water reactant (EWR)  

DOE Patents (OSTI)

A method for oil recovery whereby an exothermic water reactant (EWR) encapsulated in a water soluble coating is placed in water and pumped into one or more oil wells in contact with an oil bearing formation. After the water carries the EWR to the bottom of the injection well, the water soluble coating dissolves and the EWR reacts with the water to produce heat, an alkali solution, and hydrogen. The heat from the EWR reaction generates steam, which is forced into the oil bearing formation where it condenses and transfers heat to the oil, elevating its temperature and decreasing the viscosity of the oil. The aqueous alkali solution mixes with the oil in the oil bearing formation and forms a surfactant that reduces the interfacial tension between the oil and water. The hydrogen may be used to react with the oil at these elevated temperatures to form lighter molecules, thus upgrading to a certain extent the oil in situ. As a result, the oil can flow more efficiently and easily through the oil bearing formation towards and into one or more production wells.

Robertson, Eric P

2011-05-24T23:59:59.000Z

371

Effect of pre-oxidation and environmental aging on the seal strength of a novel high-temperature solid oxide fuel cell (SOFC) sealing glass with metallic interconnect  

SciTech Connect

A novel high-temperature alkaline-earth silicate sealing glass was developed for solid oxide fuel cell (SOFC) applications. The glass was used to join two ferritic stainless steel coupons for strength evaluation. The steel coupons were pre-oxidized at elevated temperatures to promote thick oxide layers to simulate long-term exposure conditions. In addition, seals to as-received metal coupons were also tested after aging in oxidizing or reducing environments to simulate the actual SOFC environment. Room temperature tensile testing showed strength degradation when using pre-oxidized coupons, and more extensive degradation after aging in air. Fracture surface and microstructural analysis confirmed that the cause of degradation was formation of SrCrO4 at the outer sealing edges exposed to air.

Chou, Y. S.; Stevenson, Jeffry W.; Singh, Prabhakar

2008-09-15T23:59:59.000Z

372

High-temperature Pump Monitoring - High-temperature ESP Monitoring...  

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

at least at the outset, exclude new ideas. The drift issue appears to have brought a new search for materials into this research. * Objectives: Develop temperature and pressure...

373

High-temperature Pump Monitoring - High-temperature ESP Monitoring...  

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

Report Detecting Fractures Using Technology at High Temperatures and Depths - Geothermal Ultrasonic Fracture Imager (GUFI); 2010 Geothermal Technology Program Peer Review Report...

374

Syntheses and characterization of energetic compounds constructed from alkaline earth metal cations (Sr and Ba) and 1,2-bis(tetrazol-5-yl)ethane  

SciTech Connect

Two new energetic compounds, [M(BTE)(H{sub 2}O){sub 5}]{sub n} (M=Sr(1), Ba(2)) [H{sub 2}BTE=1,2-bis(tetrazol-5-yl)ethane], have been hydrothermally synthesized and structurally characterized. Single-crystal X-ray diffraction analyses reveal that they are isomorphous and exhibit 2D (4,4) net framework, generated by 4-connected Sr{sub 2}(H{sub 2}O){sub 10}/Ba{sub 2}(H{sub 2}O){sub 10} SBUs linked up by two independent binding modes of H{sub 2}BTE, and the resulting 2D structure is interconnected by hydrogen-bond and strong face to face {pi}-{pi} stacking interactions between two tetrazole rings to lead to a 3D supramolecular architecture. DSC measurements show that they have significant catalytic effects on thermal decomposition of ammonium perchlorate. Moreover, the photoluminescence properties, thermogravimetric analyses, and flame colors of the as-prepared compounds are also investigated in this paper. - Graphical abstract: Two novel 2D isomorphous alkaline earth metal complexes were assembled by 4-connected Sr{sub 2}(H{sub 2}O){sub 10}/Ba{sub 2}(H{sub 2}O){sub 10} SBUs and two independent binding modes of H{sub 2}BTE ligands, and the catalytic performances toward thermal decomposition of ammonium perchlorate and photoluminescent properties of them were investigated. Highlights: > Two novel alkaline earth energetic coordination polymers have been prepared.{yields} Both structures are layered based on 4-connected Sr{sub 2}(H{sub 2}O){sub 10}/Ba{sub 2}(H{sub 2}O){sub 10} SBUs and two distinct H{sub 2}BTE coordination modes.{yields} The dehydrated products of the compounds possess good thermostability and significant catalytic effects on thermal decomposition of AP.

Xia Zhengqiang [Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710069 (China); Chen Sanping, E-mail: sanpingchen@126.com [Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710069 (China); Wei Qing, E-mail: weiqq@126.com [Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710069 (China); Qiao Chengfang [Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710069 (China)

2011-07-15T23:59:59.000Z

375

E-Print Network 3.0 - adiabatic temperature change Sample Search...  

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

adiabatic process changes the temperature of the gas without heating it. 12;DC A steam engine and a Ferrari... a phase change. Specific heat c of a substance is the energy...

376

GIS-Supported Decision Making for Low-Temperature Geothermal Energy in Central Italy  

Science Journals Connector (OSTI)

The project specifications of a geospatial decision support system are described in this chapter. The system is dedicated to the low-temperature geothermal energy, and it allows to build spatial models of the res...

Alberto Gemelli; Adriano Mancini…

2013-01-01T23:59:59.000Z

377

Independent Specific Administrative Controls Review, Richland Operations  

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

Independent Specific Administrative Controls Review, Richland Independent Specific Administrative Controls Review, Richland Operations Office - December 2010 Independent Specific Administrative Controls Review, Richland Operations Office - December 2010 December 2010 Specific Administrative Controls Review with the Office of Environmental Management at DOE-Richland Operations Office The U.S. Department of Energy (DOE) Office of Independent Oversight, within the Office of Health, Safety and Security, participated in the Office of Environmental Management Office of Standards and Quality Assurance, EM-23, review of Specific Administrative Controls (SAC) at the Hanford Site. The EM-23 review included selected programs at the Hanford Site that are under the auspices of the DOE Richland Operations Office. Independent Specific Administrative Controls Review, Richland Operations

378

Actinide Thermodynamics at Elevated Temperatures  

SciTech Connect

The postclosure chemical environment in the proposed Yucca Mountain repository is expected to experience elevated temperatures. Predicting migration of actinides is possible if sufficient, reliable thermodynamic data on hydrolysis and complexation are available for these temperatures. Data are scarce and scattered for 25 degrees C, and nonexistent for elevated temperatures. This collaborative project between LBNL and PNNL collects thermodynamic data at elevated temperatures on actinide complexes with inorganic ligands that may be present in Yucca Mountain. The ligands include hydroxide, fluoride, sulfate, phosphate and carbonate. Thermodynamic parameters of complexation, including stability constants, enthalpy, entropy and heat capacity of complexation, are measured with a variety of techniques including solvent extraction, potentiometry, spectrophotometry and calorimetry

Friese, Judah I.; Rao, Linfeng; Xia, Yuanxian; Bachelor, Paula P.; Tian, Guoxin

2007-11-16T23:59:59.000Z

379

High Temperature Processing Symposium 2014  

E-Print Network (OSTI)

} High temperature recycling operations } Materials sustainability } New furnace technology (including solar) We look forward to seeing you in February 2014. Dr M Akbar Rhamdhani (Chairman HTPS 2014) Prof

Liley, David

380

AAPG Low-Temperature Webinar  

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

is coproduction? When and where are low temperature geothermal resources coproduced with oil and gas? * What are the economics of low temp geothermal coproduction? * Where are some...

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Low Specific Activity (LSA) | Department of Energy  

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

Low Specific Activity (LSA) Low Specific Activity (LSA) Low Specific Activity (LSA) This scenario provides the planning instructions, guidance, and evaluation forms necessary to conduct an exercise involving a highway shipment of Low Specific Activity (LSA) material. This exercise manual is one in a series of five scenarios developed by the Department of Energy Transportation Emergency Preparedness Program. Responding agencies may include several or more of the following: local municipal and county fire, police, sheriff, and Emergency Medical Services (EMS) personnel; state, local, and federal emergency response teams; emergency response contractors; and other emergency response resources that could potentially be provided by the carrier and the originating facility (shipper).

382

Legacy Management Specific Training | Department of Energy  

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

Legacy Management Specific Training Legacy Management Specific Training Legacy Management Specific Training Registration Information The following courses are specific to Legacy Management Employees, for more information about the courses below or to register for any of these courses please contact Chequita Johnson. Mandatory Training ECOMM, Environmental-Related External Communication (E-COMM) Tracking System GPP101, Management of Government Personal Property RM 102, Basic Records Management Training (DOE) Training at All LM Site Offices EC 100, Environmental Management System General Awareness (DOE) ER 200, Site Emergency Preparedness [All sites except Grand Junction] SC 105, Security Awareness Briefing Washington, DC HQ Mini Coop Briefing Fernald, OH FE110, Fernald Preserve Site Awareness Briefing

383

Oak Ridge Site Specific Advisory Board Committees  

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

Oak Ridge’s Site Specific Advisory Board uses its committee structure to achieve its mission and conduct many of its tasks.

384

Oak Ridge Site Specific Advisory Board  

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

on Additional Off-site Groundwater Migration Studies At our May 14, 2014, meeting, the Oak Ridge Site Specific Advisory Board approved the enclosed recommendations on additional...

385

Oak Ridge Site Specific Advisory Board  

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

3: Recommendations on Additional Waste Disposal Capacity on the Oak Ridge Reservation At our May 14, 2014, meeting, the Oak Ridge Site Specific Advisory Board approved the enclosed...

386

Model Specification for LED Roadway Luminaires  

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

The DOE Municipal Solid-State Street Lighting Consortium's Model Specification for LED Roadway Luminaires enables cities, utilities, and other state and local agencies to assemble effective bid...

387

Model Specification for LED Roadway Luminaires Webcast  

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

This November 15, 2011 webcast presented information about the Model Specification for LED Roadway Luminaires developed by DOE's Municipal Solid-State Street Lighting Consortium. During the webcast...

388

CRAD, Specific Administrative Controls - December 14, 2007 |...  

Office of Environmental Management (EM)

2007 Specific Administrative Controls Implementation Inspection Criteria, Approach, and Lines of Inquiry (HSS CRAD 64-32) This Criteria Review and Approach Document (HSS CRAD...

389

Experiment Hazard Class 3 - High Temperatures  

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

Operation * APS Base Low Temperatures * Cryogenic Systems High Temperatures * Electric Furnace * Optical Furnace * Other High Temperature Lasers * Laser, Class 2 * Laser,...

390

ARM - Measurement - Soil surface temperature  

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

surface temperature surface temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil surface temperature The temperature of the soil measured near the surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AMC : Ameriflux Measurement Component CO2FLX : Carbon Dioxide Flux Measurement Systems SOIL : Soil Measurement from the SGP SWATS : Soil Water and Temperature System MET : Surface Meteorological Instrumentation

391

ARM - Measurement - Surface skin temperature  

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

skin temperature skin temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Surface skin temperature The radiative surface skin temperature, from an IR thermometer measuring the narrowband radiating temperature of the ground surface in its field of view. Categories Radiometric, Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments IRT : Infrared Thermometer MFRIRT : Multifilter Radiometer and Infrared Thermometer External Instruments

392

Surface temperature | OpenEI  

Open Energy Info (EERE)

Surface temperature Surface temperature Dataset Summary Description This dataset, made available by the UK Department of Energy and Climate Change (DECC), shows the difference between the yearly central England temperature for years 1772 through 2009 and the 1961 - 1990 baseline (1961 - 1990 Central England average after smoothing). It also shows the difference between average global temperature and 1961 - 1990 average after smoothing. The original source of the data is the Met Office. Source UK Department of Energy and Climate Change (DECC) Date Released March 12th, 2010 (4 years ago) Date Updated Unknown Keywords climate change Surface temperature UK weather Data application/vnd.ms-excel icon 1 Excel file: Surface Temps, 1772 - 1990 (xls, 1.3 MiB) Quality Metrics Level of Review Some Review

393

Synthesis for Regular Specifications over Unbounded Domains  

E-Print Network (OSTI)

Synthesis for Regular Specifications over Unbounded Domains Jad Hamza, Barbara Jobstmann, Viktor Kuncak ENS Cachan, France CNRS/Verimag, France, EPFL, Switzerland Abstract--Synthesis from specifications is a promising method of obtaining systems that are correct by construction. Previous work includes synthesis

Jobstmann, Barbara

394

Building Energy Data Exchange Specification Scoping Report  

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

Building Energy Data Exchange Specification Scoping Report. The Building Energy Data Exchange Specification (BEDES), developed by DOE, is a uniform format is intended to make it easier for external stakeholders to use DOE tools, streamline reporting for DOE programs, and help unlock the full utility of the data that the DOE collects.

395

Formal Specification of Operating System Operations  

E-Print Network (OSTI)

Formal Specification of Operating System Operations Dan Zhou Department of Computer Science.black@nist.gov This paper describes the development of a formal specification for a secure operating system architecture operations. We also provide a uniform environment for system commands that change the security state

Black, Paul E.

396

End Points Specification Methods | Department of Energy  

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

End Points Specification Methods End Points Specification Methods End Points Specification Methods Two methods to develop end point specifications are presented. These have evolved from use in the field for deactivation projects. The hierarchical method is systematic, comprehensive, and completely defensible as to the basis for each specification. This method may appear complex to the uninitiated, but it is a straightforward application of a systematic engineering approach. It is labor intensive only during the final stage. This method is appropriate to the type of project involving a complex facility that contains process systems and a variety of contaminated areas or other hazards. The checklist method is an approach that is more appropriate to facilities which require less detailed planning, such as for industrial

397

Optimization of the second-generation heliostat and specification  

SciTech Connect

A study was performed to investigate and identify heliostat cost reductions that would result from modifications to the Sandia Second Generation Heliostat Specification. A parametric analysis of specification requirements and cost benefits was done by determining the effectiveness of the change in terms of heliostat field cost per unit intercepted annual energy on the receiver. The study considered the areas of reduced operational wind requirements, effects of heliostat beam pointing the beam quality requirements, operational range temperature effects, survival wind requirements and criteria, aspect ratio effects, and slew rates. Also considered were the effects of mixing two heliostats with different performance levels in the 50 MWe field and a damage/cost estimate for survival of the baseline heliostat to higher wind loads than the specification. An investigation and analysis of the safety issues associated with beam control during normal heliostat operating and stow conditions was performed using analytical equations for both single and multiple heliostats. Effort in this area was directed toward determining feasibility and implementation methods for safe face-up stow strategies. (LEW)

Dietrich, J.J.; Knowles, R.K.; Stone, K.W.; Steinmeyer, D.A.; Nourse, J.H.

1982-05-01T23:59:59.000Z

398

Development of High-Temperature Ferritic Alloys and Performance Prediction Methods for Advanced Fission Energy Systems  

SciTech Connect

Reports the results of a comprehensive development and analysis of a database on irradiation hardening and embrittlement of tempered martensitic steels (TMS). Alloy specific quantitative semi-empirical models were derived for the dpa dose, irradiation temperature (ti) and test (Tt) temperature of yield stress hardening (or softening) .

G. RObert Odette; Takuya Yamamoto

2009-08-14T23:59:59.000Z

399

Effect of aluminizing of Cr-containing ferritic alloys on the seal strength of a novel high-temperature solid oxide fuel cell sealing glass  

SciTech Connect

A novel high-temperature alkaline-earth silicate sealing glass was developed for solid oxide fuel cell (SOFC) applications. The glass was used to join two metallic coupons of Cr-containing ferritic stainless steel for seal strength evaluation. In previous work, SrCrO4 was found to form along the glass/steel interface, which led to severe strength degradation. In the present study, aluminization of the steel surface was investigated as a remedy to minimize or prevent the strontium chromate formation. Three different processes for aluminization were evaluated with Crofer22APU stainless steel: pack cementation, vapor phase deposition, and aerosol spraying. It was found that pack cementation resulted in a rough surface with occasional cracks in the Al-diffused region. Vapor phase deposition yielded a smoother surface, but the resulting high Al content increased the coefficient of thermal expansion (CTE), resulting in failure of joined coupons. Aerosol spraying of an Al-containing salt resulted in formation of a thin aluminum oxide layer without any surface damage. The room temperature seal strength was evaluated in the as-fired state and in environmentally aged conditions. In contrast to earlier results with uncoated Crofer22APU, the aluminized samples showed no strength degradation even for samples aged in air. Interfacial and chemical compatibility was also investigated. The results showed aluminization to be a viable candidate approach to minimize undesirable chromate formation between alkaline earth silicate sealing glass and Cr-containing interconnect alloys for SOFC applications.

Chou, Y. S.; Stevenson, Jeffry W.; Singh, Prabhakar

2008-12-01T23:59:59.000Z

400

Temperature dependence of vortex charges in high-temperature superconductors  

Science Journals Connector (OSTI)

Using a model Hamiltonian with d-wave superconductivity and competing antiferromagnetic (AF) interactions, the temperature (T) dependence of the vortex charge in high-Tc superconductors is investigated by numerically solving the Bogoliubov–de Gennes equations. The strength of the induced AF order inside the vortex core is T dependent. The vortex charge could be negative when the AF order with sufficient strength is present at low temperatures. At higher temperatures, the AF order may be completely suppressed and the vortex charge becomes positive. A first-order-like transition in the T-dependent vortex charge is seen near the critical temperature TAF. For an underdoped sample, the spatial profiles of the induced spin-density wave and the charge-density wave orders could have stripelike structures at TTs. As a result, a vortex charge discontinuity occurs at Ts.

Yan Chen; Z. D. Wang; C. S. Ting

2003-06-03T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Levoglucosan as a specific marker of fire events in Greenland snow  

E-Print Network (OSTI)

,6-anhydro-b-D-glucopyranose) as a source-specific proxy of past fire activity in snow pits and ice cores. Levoglucosan is unambiguously a degradation product derived from cellulose burning at temperatures greater than 300 8C and is widely used as a biomass burning marker in aerosol analyses. We analyse samples

Paris-Sud XI, Université de

402

Specific Heats of Dilute Cu-Co Alloys between 1.5° and 4.5°K  

Science Journals Connector (OSTI)

Specific heats of eight specimens of dilute copper-cobalt alloys were measured in the range of 1.5° to 4.5°K. Cobalt concentration of these samples lay between ¼ and 2½ weight percent. At all concentrations the specific heat is greater than that of pure copper, with the excess linear in temperature and quadratic in concentration for the lower concentrations at the higher temperatures. Near the lower end of this temperature range, samples of greater than 1¼% cobalt also exhibit an additional anomaly which appears to have a characteristic temperature proportional to cobalt concentration. A comparison to the specific heats of dilute Cu-Mn alloys shows that the magnetic interactions in Cu-Co and Cu-Mn must differ greatly in character.

L. T. Crane and J. E. Zimmerman

1961-07-01T23:59:59.000Z

403

Subcritical temperature in Bose-Einstein condensates of chiral molecules  

E-Print Network (OSTI)

Bose-Einstein condensation of a sample of non-interacting chiral molecules leads to a non zero optical activity of the condensate and also to a subcritical temperature in the heat capacity. This is due to the internal structure of the molecule which, in our model, is considered as a simple two-state system, characterized by tunneling and parity violation. The predicted singular behavior found for the specific heat, below the condensation temperature, sheds some light on the existence of the so far elusive parity violation energy difference between enantiomers.

Pedro Bargueno; Ricardo Perez de Tudela; Salvador Miret-Artes; Isabel Gonzalo

2010-04-21T23:59:59.000Z

404

Method for measuring surface temperature  

DOE Patents (OSTI)

The present invention relates to a method for measuring a surface temperature using is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A. (Los Alamos, NM); Baker, Sheila N. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM)

2009-07-28T23:59:59.000Z

405

A Dynamical Approach to Temperature  

E-Print Network (OSTI)

We present a new dynamical approach for measuring the temperature of a Hamiltonian dynamical system in the micro canonical ensemble of thermodynamics. We show that under the hypothesis of ergodicity the temperature can be computed as a time-average of the functional, div(grad H/|grad H|^2), on the energy-surface. Our method not only yields an efficient computational approach for determining the temperature it also provides an intrinsic link between dynamical systems theory and the statistical mechanics of Hamiltonian systems.

Hans Henrik Rugh

1997-01-30T23:59:59.000Z

406

Ohmic contacts for high-temperature GaP devices  

E-Print Network (OSTI)

REMOVAL 10 13 24 24 26 50 50 52 78 80 83 98 98 99 100 TABLE OF CONTENTS (Continued) APPENDIX D ? 6 LIFT-OFF PREMETAL PREPARATION APPENDIX D ? 7 METAL LIFTOFF Page 100 100 vi LIST OP TABLES Table I Relative High Temperature... with a variety of III-V compound semi- conductors and contact metals. By using a ruby or a COe laser with Au-Sn or Ag-Sn contact metals, specific contact resistances as low as 8. 6 x 19 " 0-cm were reported. (The specific contact resistance...

Van der Hoeven, Willem Bernard

2012-06-07T23:59:59.000Z

407

ARM - Measurement - Sea surface temperature  

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

govMeasurementsSea surface temperature govMeasurementsSea surface temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Sea surface temperature The temperature of sea water near the surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model Data Field Campaign Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model Data MIRAI : JAMSTEC Research Vessel Mirai

408

A Synthesis of Antarctic Temperatures  

Science Journals Connector (OSTI)

Monthly surface air temperatures from land surface stations, automatic weather stations, and ship/buoy observations from the high-latitude Southern Hemisphere are synthesized into gridded analyses at a resolution appropriate for applications ...

William L. Chapman; John E. Walsh

2007-08-01T23:59:59.000Z

409

Philosophy 26 High Temperature Superconductivity  

E-Print Network (OSTI)

is the ratio of voltage to current. The resistance of a material tells us how a low resistance, and they are therefore good conductors; other materials, likePhilosophy 26 High Temperature Superconductivity By Ohm's Law, resistance

Callender, Craig

410

temperature heat pumps applied to  

E-Print Network (OSTI)

Very high- temperature heat pumps applied to energy efficiency in industry Application June 21th 2012 Energy efficiency : A contribution to environmental protection Kyoto Copenhage Emission, plastics Partnership : EDF R&D Bil

Oak Ridge National Laboratory

411

Thermal Dosimetry and Temperature Measurements  

Science Journals Connector (OSTI)

...Saptem ber 15 and 16, 1978, San Diego, Calif. 2 The abbreviations used are: RF, radiofrequency; LED, light-emitting diode. gross temperature measurement errors when the probes are used to monitor tissue or phantom material in an electromag...

D. A. Christensen

1979-06-01T23:59:59.000Z

412

temperatures | OpenEI Community  

Open Energy Info (EERE)

temperatures temperatures Home Graham7781's picture Submitted by Graham7781(1992) Super contributor 18 January, 2013 - 15:46 U.S. Global Change Research Program publishes "National Climate Assessment" report for United States climate change drought OpenEI sea level rise temperatures U.S. Global Climate Change program The U.S. Global Change Research Program, established under the Department of Commerce in 2010, and partnered with NOAA, released an extensive National Climate Assessment report, projecting future climate changes in the United States under different scenarios. The 1,200 page report highlights some rather grim findings about the future of climate change. Here are 5 of the more disconcerting graphics from the report: 1. U.S. Average Temperatures Syndicate content

413

ATLAS Binary Readout IC (ABC) Specification V5.01 21Jul1999 Project Specification  

E-Print Network (OSTI)

ATLAS Binary Readout IC (ABC) Specification V5.01 21­Jul­1999 Project Specification Project Name: ATLAS ATLAS Binary Readout IC (ABC) Specification V5.01 21­Jul­1999 Table of Contents 1. SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1. ATLAS BINARY FRONT END READOUT ARCHITECTURE

California at Santa Cruz, University of

414

ATLAS Binary Readout IC (ABC) Specification V5.01 21-Jul-1999 Project Specification  

E-Print Network (OSTI)

Page 1 ATLAS Binary Readout IC (ABC) Specification V5.01 21-Jul-1999 Project Specification Project Name: ATLAS Binary Chip (ABC) Version: 5.01 Revision History Revision Change Description, Pages Revised and formatting. M. French 21-Jul-99 #12;Page 2 ATLAS Binary Readout IC (ABC) Specification V5.01 21-Jul-1999

California at Santa Cruz, University of

415

BRASIL Language Specification March 9, 2010  

E-Print Network (OSTI)

BRASIL Language Specification March 9, 2010 #12;Contents 1 Introduction 3 2 Getting Started: Simulations in BRASIL 4 2.1 The State-Effect Design Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Supporting the State-Effect Pattern in BRASIL

416

Antibody Chromatography on an Immunologically Specific Adsorbent  

Science Journals Connector (OSTI)

... in the separation of closely related proteins as of low molecular weight substances, chromatography on adsorbents which bind only to the specific reactive sites of biologically active proteins may help to ...

L. S. LERMAN

1953-10-03T23:59:59.000Z

417

Oak Ridge Site Specific Advisory Board  

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

Oak Ridge Site Specific Advisory Board Wednesday, March 12, 2014, 6:00 p.m. DOE Information Center 1 Science.gov Way, Oak Ridge, Tenn. AGENDA I. Welcome and Announcements (D....

418

British Standard Specification for Cable Insulation  

Science Journals Connector (OSTI)

... different types of cables and cords ; and the third, with tests for thickness of insulation and sheath, voltage, ... and sheath, voltage, insulation resistance, spark testing, tinning and armouring. The numerous tables with which the specification ...

1947-02-22T23:59:59.000Z

419

Geothermal energy, site specificity, and resource reserves  

Science Journals Connector (OSTI)

The site specific nature of geothermal energy places a great emphasis on land use ... use planning. A survey of the operating geothermal generating stations around the world reveals many ... agricultural use of t...

M. J. Pasqualetti

1981-01-01T23:59:59.000Z

420

Bonneville Power Administration Program Specific Recovery Plan...  

Energy Savers (EERE)

Power Administration Program Specific Recovery Plan Microsoft Word - PSRP May 15 2009 BPA Final.docx More Documents & Publications Microsoft Word - PSRP Updates 6-25-10v2...

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

UPC Language Specifications V1.2  

SciTech Connect

UPC is an explicitly parallel extension to the ISO C 99Standard. UPC follows the partitioned global address space programming model. This document is the formal specification for the UPC language syntax and semantics.

UPC Consortium

2005-05-31T23:59:59.000Z

422

Double Shell Tank (DST) Utilities Specification  

SciTech Connect

This specification establishes the performance requirements and provides the references to the requisite codes and standards to he applied during the design of the Double-Shell Tank (DST) Utilities Subsystems that support the first phase of waste feed delivery (WFD). The DST Utilities Subsystems provide electrical power, raw/potable water, and service/instrument air to the equipment and structures used to transfer low-activity waste (LAW) and high-level waste (HLW) to designated DST staging tanks. The DST Utilities Subsystems also support the equipment and structures used to deliver blended LAW and HLW feed from these staging tanks to the River Protection Project (RPP) Privatization Contractor facility where the waste will be immobilized. This specification is intended to be the basis for new projects/installations. This specification is not intended to retroactively affect previously established project design criteria without specific direction by the program.

SUSIENE, W.T.

2000-04-27T23:59:59.000Z

423

Stepwise Development from Ideal Specifications Graeme Smith  

E-Print Network (OSTI)

Stepwise Development from Ideal Specifications Graeme Smith Software Verification Research Centre University of Queensland, Australia smith@svrc.uq.edu.au Abstract The stepwise development of a program using

Smith, Graeme

424

Technical requirements specification for tank waste retrieval  

SciTech Connect

This document provides the technical requirements specification for the retrieval of waste from the underground storage tanks at the Hanford Site. All activities covered by this scope are conducted in support of the Tank Waste Remediation System (TWRS) mission.

Lamberd, D.L.

1996-09-26T23:59:59.000Z

425

Fuel Temperature Coefficient of Reactivity  

SciTech Connect

A method for measuring the fuel temperature coefficient of reactivity in a heterogeneous nuclear reactor is presented. The method, which is used during normal operation, requires that calibrated control rods be oscillated in a special way at a high reactor power level. The value of the fuel temperature coefficient of reactivity is found from the measured flux responses to these oscillations. Application of the method in a Savannah River reactor charged with natural uranium is discussed.

Loewe, W.E.

2001-07-31T23:59:59.000Z

426

Better Buildings Alliance Equipment Performance Specifications  

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

BBA Equipment Performance BBA Equipment Performance Specifications William Goetzler Navigant Consulting william.goetzler@navigant.com (781) 270 8351 April 4, 2013 Better Buildings Alliance BTO Program Review 2 | Building Technologies Office eere.energy.gov Project Overview The BBA Performance Specifications project provides information and tools to help BBA members and other commercial building owners/operators specify and purchase high efficiency equipment. - Ensures targeted technologies are of interest to end users and manufacturers

427

Better Buildings Alliance Equipment Performance Specifications  

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

BBA Equipment Performance BBA Equipment Performance Specifications William Goetzler Navigant Consulting william.goetzler@navigant.com (781) 270 8351 April 4, 2013 Better Buildings Alliance BTO Program Review 2 | Building Technologies Office eere.energy.gov Project Overview The BBA Performance Specifications project provides information and tools to help BBA members and other commercial building owners/operators specify and purchase high efficiency equipment. - Ensures targeted technologies are of interest to end users and manufacturers

428

Curie temperature of multiphase nanostructures  

SciTech Connect

The Curie temperature and the local spontaneous magnetization of ferromagnetic nanocomposites are investigated. The macroscopic character of the critical fluctuations responsible for the onset of ferromagnetic order means that there is only one Curie temperature, independent of the number of magnetic phases present. The Curie temperature increases with the grain size and is, in general, larger than predicted from the volume averages of the exchange constants. However, the Curie-temperature enhancement is accompanied by a relative reduction of the spontaneous magnetization. Due to the quadratic dependence of the permanent-magnet energy product on the spontaneous magnetization, this amounts to a deterioration of the magnets performance. The length scale on which an effective intergranular exchange coupling is realized (coupling length) depends on the Curie-temperature difference between the phases and on the spacial distribution of the local interatomic exchange. As a rule, it is of the order of a few interatomic distances; for much bigger grain sizes the structures mimic an interaction-free ensemble of different ferromagnetic materials. This must be compared to the magnetic-anisotropy coupling length, which is of the order of 10 nm. The difference is explained by the nonrelativistic character of the Curie-temperature problem. (c) 2000 American Institute of Physics.

Skomski, R. [Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588 (United States)] [Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588 (United States); Sellmyer, D. J. [Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588 (United States)] [Department of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588 (United States)

2000-05-01T23:59:59.000Z

429

Extremely Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Extremely Low Temperature Extremely Low Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Extremely Low Temperature Dictionary.png Extremely Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid less than 100°C is considered to to be "extremely low temperature." Note: Sanyal classified fluids of these temperatures to be "non-electrical grade" in 2005, but electricity has since been generated from these

430

Linear Fresnel Collector Receiver: Heat Loss and Temperatures  

Science Journals Connector (OSTI)

Abstract For design and component specification of a Linear Fresnel Collector (LFC) cavity receiver, the prediction of temperature distribution and heat loss is of great importance. In this paper we present a sensitivity analysis for a range of geometry and material parameters. For the LFC receiver analysis we use two models developed at Fraunhofer ISE. One is a detailed model, combining the spatial distribution of reflected radiation via ray tracing with detailed convective simulations through computational fluid dynamics. The second one is a fast algorithm based on a thermal resistance model. It is applying a similar methodology as the well-known model for vacuum absorber, enhancing an absorber tube model by parameters describing the influence of the secondary mirror and cover glass. The thermal resistance model is described in detail. Obtained results indicate a significant effect of the secondary mirror temperature on heat loss for specific geometries.

A. Heimsath; F. Cuevas; A. Hofer; P. Nitz; W.J. Platzer

2014-01-01T23:59:59.000Z

431

Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE | Department...  

Energy Savers (EERE)

Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE, from the...

432

Advances in Fe(VI) charge storage: Part II. Reversible alkaline super-iron batteries and nonaqueous super-iron batteries  

Science Journals Connector (OSTI)

Reversible thin film Fe(VI/III) cathodic charge/discharge storage in alkaline batteries is presented. Whereas ultra-thin (e.g., 3 nm) Fe(VI/III) films exhibit a high degree of reversibility, thicker films are increasingly passive toward the Fe(VI) charge transfer. An extended conductive matrix facilitates a 100-fold enhancement in charge storage for reversible Fe(VI/III) super-iron thin films. The thicker (100s of nanometers) films deposited on extended conductive matrixes composed of high-surface-area Pt, Ti, and Au can sustain high reversibility, which provides the possibility of using Fe(VI) salts as the cathode materials for rechargeable Fe(VI)/metal hydride batteries. Super-iron cathodes can also be discharged in conjunction with a Li anode in nonaqueous media. Optimization of the nonaqueous primary super-iron/Li batteries is summarized. Fe(VI) cathodes are also reversible in nonaqueous electrolyte systems. The charge/discharge process of super-iron cathodes in nonaqueous media involves both the lithiation/delithiation of the active mass and the reduction/oxidation of the Fe(VI/III), while only the thin film Fe(VI/III) electrodes can sustain high reversibility involving the full theoretical capacity in the nonaqueous batteries.

Xingwen Yu; Stuart Licht

2007-01-01T23:59:59.000Z

433

Unimolecular and hydrolysis channels for the detachment of water from microsolvated alkaline earth dication (Mg2+, Ca2+, Sr2+, Ba2+) clusters  

SciTech Connect

We examine theoretically the three channels that are associated with the detachment of a single water molecule from the aqueous clusters of the alkaline earth dications, [M(H2O)n]2+, M = Mg, Ca, Sr, Ba, n ? 6. These are the unimolecular water loss (M2+(H2O)n-1 + H2O) and the two hydrolysis channels resulting to the loss of hydronium ([MOH(H2O)n-2]+ + H3O+) and Zundel ([MOH(H2O)n-3]+ + H3O+(H2O)) cations. The Potential Energy Curves (PECs) corresponding to those three channels were constructed at the Møller-Plesset second order perturbation (MP2) level of theory with basis sets of double- and triple-? quality. We furthermore investigated the water and hydronium loss channels from the mono-hydroxide water clusters with up to four water molecules, [MOH(H2O)n]+, 1 ? n ? 4. Our results indicate the preference of the hydronium loss and possibly the Zundel cation loss channels for the smallest size clusters, whereas the unimolecular water loss channel is preferred for the larger ones as well as the mono-hydroxide clusters. Although the charge separation (hydronium and Zundel cation loss) channels produce more stable products when compared to the ones for the unimolecular water loss, they also require the surmounting of high energy barriers, a fact that makes the experimental observation of fragments related to these hydrolysis channels difficult.

Miliordos, Evangelos; Xantheas, Sotiris S.

2014-02-07T23:59:59.000Z

434

Additional doping of phosphorus into polypyrrole functionalized nitrogenous carbon nanotubes as novel metal-free oxygen reduction electrocatalyst in alkaline solution  

Science Journals Connector (OSTI)

Abstract Novel phosphorus-doped polypyrrole functionalized nitrogenous carbon nanotubes (P/NCNTs) was developed for the first time as metal-free electrocatalyst for enhancing the oxygen reduction reaction (ORR) activity in alkaline medium. The P/NCNTs was successfully synthesized by pyrolyzing \\{PPy\\} and triphenylphosphane (TPP) under N2, using pyrrole as carbon and nitrogen precursors, TPP as phosphorus precursor. Various characterizations such as transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectra, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) reveal that the P/NCNTs material has covalently bound P atoms with carbon framework, which can introduce defect sites and can induce uneven charge distribution. Moreover, the content of pyridine N increased after P-doping, which is of great significance in improving the ORR activity. The electrochemical behavior of the resultant material shows that the P/NCNTs has much enhanced electroactivity and better stability for ORR. Additionally, a direct four-electron pathway occurred efficiently on P/NCNTs modified electrode. These enhanced performances indicate that P/NCNTs catalyst may be an excellent cathode catalyst for ORR.

Pei Song; Xiangjie Bo; Anaclet Nsabimana; Liping Guo

2014-01-01T23:59:59.000Z

435

Study of electrodeposited nickel-molybdenum, nickel-tungsten, cobalt-molybdenum, and cobalt-tungsten as hydrogen electrodes in alkaline water electrolysis  

SciTech Connect

Electrodeposited nickel-molybdenum, nickel-tungsten, cobalt-molybdenum, and cobalt-tungsten were characterized for the hydrogen evolution reaction (HER) in the electrolysis of 30 w/o KOH alkaline water at 25 C. The rate-determining step (rds) of the HER was suggested based on the Tafel slope of polarization and the capacitance of electrode-solution interface determined by ac impedance measurement. The HER on the nickel- and cobalt-based codeposits was enhanced significantly compared with that o the electrolytic nickel and cobalt with comparable deposit loadings. The decrease in the HER overpotential was more pronounced on the molybdenum-containing codeposits, particularly on cobalt-molybdenum which also showed a high stability. The enhancement of the HER was attributed to both the synergetic composition and the increased active surface of the codeposits. The real electrocatalytic activity of te electrodes and the effect of their and the increased active surface of the codeposits. The real electrocatalytic activity of the electrodes and the effect of their surface increase were distinguished quantitatively. The linear relations between HER overpotential and surface roughness factor of the electrodes on a Y-log(X) plot were obtained experimentally and interpreted based on the Tafel law.

Fan, C.; Piron, D.L.; Sleb, A.; Paradis, P. (Ecole Polytechnique de Montreal, Quebec (Canada). Dept. de Metallurgie et de Genie des Materiaux)

1994-02-01T23:59:59.000Z

436

High temperature thermometric phosphors for use in a temperature sensor  

DOE Patents (OSTI)

A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.(y), wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.

Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN); Gillies, George T. (Earlysville, VA)

1998-01-01T23:59:59.000Z

437

Apparatus and method for high temperature viscosity and temperature measurements  

DOE Patents (OSTI)

A probe for measuring the viscosity and/or temperature of high temperature liquids, such as molten metals, glass and similar materials comprises a rod which is an acoustical waveguide through which a transducer emits an ultrasonic signal through one end of the probe, and which is reflected from (a) a notch or slit or an interface between two materials of the probe and (b) from the other end of the probe which is in contact with the hot liquid or hot melt, and is detected by the same transducer at the signal emission end. To avoid the harmful effects of introducing a thermally conductive heat sink into the melt, the probe is made of relatively thermally insulative (non-heat-conductive) refractory material. The time between signal emission and reflection, and the amplitude of reflections, are compared against calibration curves to obtain temperature and viscosity values.

Balasubramaniam, Krishnan (Mississippi State, MS); Shah, Vimal (Houston, TX); Costley, R. Daniel (Mississippi State, MS); Singh, Jagdish P. (Mississippi State, MS)

2001-01-01T23:59:59.000Z

438

Ultra High Temperature | Open Energy Information  

Open Energy Info (EERE)

Ultra High Temperature Ultra High Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Ultra High Temperature Dictionary.png Ultra High Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid greater than 300°C is considered by Sanyal to be "ultra high temperature". "Such reservoirs are characterized by rapid development of steam saturation in the reservoir and steam fraction in the mobile fluid phase upon

439

Very Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Very Low Temperature Very Low Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Very Low Temperature Dictionary.png Very Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 100°C and 150°C is considered by Sanyal to be "very low temperature." "The mobile fluid phase in these reservoirs is liquid water. Very few power projects have been developed in the U.S. based on geothermal resources in

440

Investigation on the coprecipitation of transuranium elements from alkaline solutions by the method of appearing reagents. Study of the effects of waste components on decontamination from Np(IV) and Pu(IV)  

SciTech Connect

The third stage of the study on the homogeneous coprecipitation of neptunium and plutonium from alkaline high-level radioactive waste solutions by the Method of Appearing Reagents has been completed. Alkaline radioactive wastes exist at the U.S. Department of Energy Hanford Site. The recent studies investigated the effects of neptunium chemical reductants, plutonium(IV) concentration, and the presence of bulk tank waste solution components on the decontamination from tetravalent neptunium and plutonium achieved by homogeneous coprecipitation. Data on neptunium reduction to its tetravalent state in alkaline solution of different NaOH concentrations are given. Eleven reductants were tested to find those most suited to remove neptunium, through chemical reduction, from alkaline solution by homogeneous coprecipitation. Hydrazine, VOSO{sub 4}, and Na{sub 2}S{sub 2}O{sub 4} were found to be the most effective reductants. The rates of reduction with these reductants were comparable with the kinetics of carrier formation. Solution decontamination factors of about 400 were attained for 10{sup -6}M neptunium. Coprecipitation of plutonium(IV) with carriers obtained as products of thermal hydrolysis, redox transformations, and catalytic decomposition of [Co(NH{sub 3}){sub 6}]{sup 3+}, [Fe(CN){sub 5}NO]{sup 2-}, Cr(NO{sub 3}){sub 3}, KMnO{sub 4}, and Li{sub 4}UO{sub 2}(O{sub 2}){sub 3} was studied and results are described. Under optimum conditions, a 100-fold decrease of plutonium concentration was possible with each of these reagents.

Bessonov, A.A.; Budantseva, N.A.; Gelis, A.V.; Nikonov, M.V.; Shilov, V.P. [Russian Academy of Sciences, Moscow (Russian Federation). Institute of Physical Chemistry

1997-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Optimal supply air temperature with respect to energy use in a variable air volume system  

Science Journals Connector (OSTI)

In a variable air volume (VAV) system with 100% outdoor air, the cooling need in the building is satisfied with a certain air flow at a certain supply air temperature. To minimize the system energy use, an optimal supply air temperature can be set dependent on the load, specific fan power (SFP), chiller coefficient of performance, outdoor temperature and the outdoor relative humidity. The theory for an optimal supply air temperature is presented and the heating, ventilation and air-conditioning (HVAC) energy use is calculated depending on supply air temperature control strategy, average U-value of the building envelope and two outdoor climates. The analyses show that controlling the supply air temperature optimally results in a significantly lower HVAC energy use than with a constant supply air temperature. The optimal average U-value of the building envelope is in practise mostly zero.

Fredrik Engdahl; Dennis Johansson

2004-01-01T23:59:59.000Z

442

Joint Institute for High Temperatures  

National Nuclear Security Administration (NNSA)

Joint Institute for High Temperatures of Russian Academy of Sciences Moscow Institute of Physics and Technology Extended title Extended title Excited state of warm dense matter or Exotic state of warm dense matter or Novel form of warm dense matter or New form of plasma Three sources of generation similarity: solid state density, two temperatures: electron temperature about tens eV, cold ions keep original crystallographic positions, but electron band structure and phonon dispersion are changed, transient but steady (quasi-stationary for a short time) state of non-equilibrium, uniform plasmas (no reference to non-ideality, both strongly and weakly coupled plasmas can be formed) spectral line spectra are emitted by ion cores embedded in plasma environment which influences the spectra strongly,

443

Integrated Emissivity And Temperature Measurement  

DOE Patents (OSTI)

A multi-channel spectrometer and a light source are used to measure both the emitted and the reflected light from a surface which is at an elevated temperature relative to its environment. In a first method, the temperature of the surface and emissivity in each wavelength is calculated from a knowledge of the spectrum and the measurement of the incident and reflected light. In the second method, the reflected light is measured from a reference surface having a known reflectivity and the same geometry as the surface of interest and the emitted and the reflected light are measured for the surface of interest. These measurements permit the computation of the emissivity in each channel of the spectrometer and the temperature of the surface of interest.

Poulsen, Peter (Livermore, CA)

2005-11-08T23:59:59.000Z

444

Domain-specific abstractions and compiler transformations  

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

Domain-specific abstractions and compiler Domain-specific abstractions and compiler transformations Domain-specific abstractions and compiler transformations March 4, 2013 sadayappan Saday Sadayappan Department of Computer Science and Engineering, Ohio State University Recent trends in architecture are making multicore parallelism as well as heterogeneity ubiquitous. This creates significant chalenges to application developers as well as compiler implementations. Currently it is virtually impossible to achieve performance portability of high-performance applications, i.e., develop a single version of source code for an application that achieves high performance on different parallel computer platforms. Different implementations of compute intensive core functions are generally needed for different target platforms, e.g., for multicore

445

AWS breaks new ground with soldering specification.  

SciTech Connect

Joining technologies continue to advance with new materials, process innovations, and inspection techniques. An increasing number of high-valued, high-reliability applications -- from boilers and ship hulls to rocket motors and medical devices -- have required the development of industry standards and specifications in order to ensure that the best design and manufacturing practices are being used to produce safe, durable products and assemblies. Standards writing has always had an important role at the American Welding Society (AWS). The AWS standards and specifications cover such topics as filler materials, joining processes, inspection techniques, and qualification methods that are used in welding and brazing technologies. These AWS standards and specifications, all of which are approved by the American National Standards Institute (ANSI), have also provided the basis for many similar documents used in Europe and in Pacific Rim countries.

Vianco, Paul Thomas

2008-08-01T23:59:59.000Z

446

High Temperature Optical Gas Sensing  

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

Optical Gas Sensing Optical Gas Sensing Opportunity Research is active on optical sensors integrated with advanced sensing materials for high temperature embedded gas sensing applications. Patent applications have been filed for two inventions in this area and several other methods are currently under development. These technologies are available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory (NETL). Organizations or individuals with capabilities in optical sensor packaging for harsh environment and high temperature applications are encouraged to contact NETL to explore potential collaborative opportunities. Overview Contact NETL Technology Transfer Group techtransfer@netl.doe.gov

447

High temperature superconductor current leads  

DOE Patents (OSTI)

An electrical lead is disclosed having one end for connection to an apparatus in a cryogenic environment and the other end for connection to an apparatus outside the cryogenic environment. The electrical lead includes a high temperature superconductor wire and an electrically conductive material distributed therein, where the conductive material is present at the one end of the lead at a concentration in the range of from 0 to about 3% by volume, and at the other end of the lead at a concentration of less than about 20% by volume. Various embodiments are shown for groups of high temperature superconductor wires and sheaths. 9 figs.

Hull, J.R.; Poeppel, R.B.

1995-06-20T23:59:59.000Z

448

ENVIRONMENTAL MANAGEMENT SITE SPECIFIC ADVISORY BOARD  

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

DEPARTMENT OF ENERGY DEPARTMENT OF ENERGY ENVIRONMENTAL MANAGEMENT SITE-SPECIFIC ADVISORY BOARD (EM SSAB) Savannah River Site Application No. (Please leave blank) ______________ MEMBERSHIP APPLICATION ________________________________________________________________________________________________ The EM SSAB provides meaningful opportunity for collaborative dialogue among the diverse communities at the Department of Energy (DOE) Environmental Management (EM) clean-up sites. At the request of the Assistant Secretary or the Site Manager/Assistant Manager for Environmental Management, the Board provides advice and recommendations concerning the following EM site-specific issues: clean-up standards and environmental restoration; waste management and disposition; stabilization and disposition of non-stockpile nuclear materials;

449

ENVIRONMENTAL MANAGEMENT SITE-SPECIFIC ADVISORY BOARD  

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

Washington, D.C. 20585 Washington, D.C. 20585 April 25, 2013 2 Environmental Management Site-Specific Advisory Board - April 25, 2013 Meeting Minutes LIST OF ACRONYMS AB - Advisory Board ANL - Argonne National Laboratory ARP - Accelerator Retrieval Project BNL - Brookhaven National Laboratory BRC - Blue Ribbon Commission CAB - Citizens Advisory Board D&D - Decontamination & Decommissioning DDFO - Deputy Designated Federal Officer DOE - Department of Energy DUF6 - Depleted Uranium Hexafluoride DWPF - Defense Waste Processing Facility EIS - Environmental Impact Statement EM - DOE Office of Environmental Management EM SSAB - DOE Office of Environmental Management Site-Specific Advisory Board EPA - U.S. Environmental Protection Agency FY - Fiscal Year

450

ACTIVITY SPECIFIC FIREARMS SAFETY PLAN FOR  

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

Atmospheric Radiation Measurement Climate Research Facility/ Atmospheric Radiation Measurement Climate Research Facility/ North Slope of Alaska/Adjacent Arctic Ocean (ACRF/NSA/AAO) Activity Specific Firearm Safety Plan for ACRF/North Slope of Alaska Sandia National Laboratories Department 6383, Energy, Climate & Atmospheric Management ACRF/NSA/AAO Revision 14 Activity Specific Firearm Safety Plan for June 2010 ACRF/North Slope of Alaska Signature Page This safety plan is approved by the undersigned and includes the firearm and ammunition storage practices described in this document. Mark D Ivey ACRF/NSA/AAO Site Manager _________________________________Date: ______ Mark D Ivey Department 06339 Manager _________________________________Date: _______ Michael L Heister SNL Safety Engineer _________________________________Date:________

451

Reliability of temperature determination from curve-fitting in multi-wavelength pyrometery  

SciTech Connect

Abstract This paper examines the reliability of a widely used method for temperature determination by multi-wavelength pyrometry. In recent WDM experiments with ion-beam heated metal foils, we found that the statistical quality of the fit to the measured data is not necessarily a measure of the accuracy of the inferred temperature. We found a specific example where a second-best fit leads to a more realistic temperature value. The physics issue is the wavelength-dependent emissivity of the hot surface. We discuss improvements of the multi-frequency pyrometry technique, which will give a more reliable determination of the temperature from emission data.

Ni, P.A.; More, R.M.; Bieniosek, F.M.

2013-08-04T23:59:59.000Z

452

Possible Routes to Frictionless Transport of Electronic Fluids in High-Temperature Superconductors  

E-Print Network (OSTI)

Electric-field-driven transport of electronic fluids in metallic glasses as well as three-dimensional amorphous superconductors are investigated by using the verified approach which has been successfully adopted to study the critical transport of glassy solid helium in very low temperature environment. The critical temperatures related to the nearly frictionless transport of electronic fluids were found to be directly relevant to the superconducting temperature of amorphous superconductors after selecting specific activation energies. Our results imply that optimal shear-thinning is an effective way to reach high-temperature charged superfluidity or superconductivity.

Zotin K-H Chu

2009-12-23T23:59:59.000Z

453

Two-phase chromium-niobium alloys exhibiting improved mechanical properties at high temperatures  

DOE Patents (OSTI)

The specification discloses chromium-niobium alloys which exhibit improved mechanical properties at high temperatures in the range of 1250.degree. C. and improved room temperature ductility. The alloys contain a Cr.sub.2 Nb-rich intermetallic phase and a Cr-rich phase with an overall niobium concentration in the range of from about 5 to about 18 at. %. The high temperature strength is substantially greater than that of state of the art nickel-based superalloys for enhanced high temperature service. Further improvements in the properties of the compositions are obtained by alloying with rhenium and aluminum; and additional rare-earth and other elements.

Liu, Chain T. (Oak Ridge, TN); Takeyama, Masao (Tokyo, JP)

1994-01-01T23:59:59.000Z

454

Two-phase chromium-niobium alloys exhibiting improved mechanical properties at high temperatures  

DOE Patents (OSTI)

The specification discloses chromium-niobium alloys which exhibit improved mechanical properties at high temperatures in the range of 1250 C and improved room temperature ductility. The alloys contain a Cr[sub 2]Nb-rich intermetallic phase and a Cr-rich phase with an overall niobium concentration in the range of from about 5 to about 18 at. %. The high temperature strength is substantially greater than that of state of the art nickel-based superalloys for enhanced high temperature service. Further improvements in the properties of the compositions are obtained by alloying with rhenium and aluminum; and additional rare-earth and other elements. 14 figures.

Liu, C.T.; Takeyama, Masao.

1994-02-01T23:59:59.000Z

455

Specific Mass Estimates for A Vapor Core Reactor With MHD  

SciTech Connect

This study investigated the development of a system concept for space power generation and nuclear electric propulsion based on a vapor core reactor (VCR) with magnetohydrodynamic (MHD) power conversion system, coupled to a magnetoplasma-dynamic (MPD) thruster. The VCR is a liquid-vapor core reactor concept operating with metallic uranium or uranium tetrafluoride (UF{sub 4}) vapor as the fissioning fuel and alkali metals or their fluorides as working fluid in a closed Rankine cycle with MHD energy conversion. Gaseous and liquid-vapor core reactors can potentially provide the highest reactor and cycle temperature among all existing or proposed fission reactor designs. This unique feature makes this reactor concept a very natural and attractive candidate for very high power (10 to 1000 MWe) and low specific mass (0.4 to 5 kg/kWe) nuclear electric propulsion (NEP) applications since the MHD output could be coupled with minimal power conditioning to MPD thrusters or other types of thruster for producing thrust at very high specific impulse (I{sub sp} 1500 to 10,000 s). The exceptional specific mass performance of an optimized VCRMHD- NEP system could lead to a dramatic reduction in the cost and duration of manned or robotic interplanetary as well as interstellar missions. The VCR-MHD-NEP system could enable very efficient Mars cargo transfers or short (<8 month) Mars round trips with less initial mass in low Earth orbit (IMLEO). The system could also enable highly efficient lunar cargo transfer and rapid missions to other destinations throughout the solar system. (authors)

Knight, Travis; Smith, Blair; Anghaie, Samim [Innovative Nuclear Space Power and Propulsion Institute (INSPI), PO Box 116502, University of Florida, Gainesville, FL 32611-6502 (United States)

2002-07-01T23:59:59.000Z

456

Temperature fluctuations in the intergalactic medium  

Science Journals Connector (OSTI)

......research-article Papers Temperature fluctuations...Zaroubi 2 Tae-Sun Kim 3 Panayiotis...Germany The temperature of the low-density...scales, the gas distribution is similar to...scarce, then the temperature distribution could become......

Tom Theuns; Saleem Zaroubi; Tae-Sun Kim; Panayiotis Tzanavaris; Robert F. Carswell

2002-05-11T23:59:59.000Z

457

Reservoir Characterization of Bridgeport and Cypress Sandstones in Lawrence Field Illinois to Improve Petroleum Recovery by Alkaline-Surfactant-Polymer Flood  

SciTech Connect

Within the Illinois Basin, most of the oilfields are mature and have been extensively waterflooded with water cuts that range up to 99% in many of the larger fields. In order to maximize production of significant remaining mobile oil from these fields, new recovery techniques need to be researched and applied. The purpose of this project was to conduct reservoir characterization studies supporting Alkaline-Surfactant-Polymer Floods in two distinct sandstone reservoirs in Lawrence Field, Lawrence County, Illinois. A project using alkaline-surfactantpolymer (ASP) has been established in the century old Lawrence Field in southeastern Illinois where original oil in place (OOIP) is estimated at over a billion barrels and 400 million barrels have been recovered leaving more than 600 million barrels as an EOR target. Radial core flood analysis using core from the field demonstrated recoveries greater than 20% of OOIP. While the lab results are likely optimistic to actual field performance, the ASP tests indicate that substantial reserves could be recovered even if the field results are 5 to 10% of OOIP. Reservoir characterization is a key factor in the success of any EOR application. Reservoirs within the Illinois Basin are frequently characterized as being highly compartmentalized resulting in multiple flow unit configurations. The research conducted on Lawrence Field focused on characteristics that define reservoir compartmentalization in order to delineate preferred target areas so that the chemical flood can be designed and implemented for the greatest recovery potential. Along with traditional facies mapping, core analyses and petrographic analyses, conceptual geological models were constructed and used to develop 3D geocellular models, a valuable tool for visualizing reservoir architecture and also a prerequisite for reservoir simulation modeling. Cores were described and potential permeability barriers were correlated using geophysical logs. Petrographic analyses were used to better understand porosity and permeability trends in the region and to characterize barriers and define flow units. Diagenetic alterations that impact porosity and permeability include development of quartz overgrowths, sutured quartz grains, dissolution of feldspar grains, formation of clay mineral coatings on grains, and calcite cementation. Many of these alterations are controlled by facies. Mapping efforts identified distinct flow units in the northern part of the field showing that the Pennsylvanian Bridgeport consists of a series of thick incised channel fill sequences. The sandstones are about 75-150 feet thick and typically consist of medium grained and poorly sorted fluvial to distributary channel fill deposits at the base. The sandstones become indistinctly bedded distributary channel deposits in the main part of the reservoir before fining upwards and becoming more tidally influenced near their top. These channel deposits have core permeabilities ranging from 20 md to well over 1000 md. The tidally influenced deposits are more compartmentalized compared to the thicker and more continuous basal fluvial deposits. Fine grained sandstones that are laterally equivalent to the thicker channel type deposits have permeabilities rarely reaching above 250 md. Most of the unrecovered oil in Lawrence Field is contained in Pennsylvanian Age Bridgeport sandstones and Mississippian Age Cypress sandstones. These reservoirs are highly complex and compartmentalized. Detailed reservoir characterization including the development of 3-D geologic and geocellular models of target areas in the field were completed to identify areas with the best potential to recover remaining reserves including unswept and by-passed oil. This project consisted of tasks designed to compile, interpret, and analyze the data required to conduct reservoir characterization for the Bridgeport and Cypress sandstones in pilot areas in anticipation of expanded implementation of ASP flooding in Lawrence Field. Geologic and geocellular modeling needed for reservoir characterization and res

Seyler, Beverly; Grube, John; Huff, Bryan; Webb, Nathan; Damico, James; Blakley, Curt; Madhavan, Vineeth; Johanek, Philip; Frailey, Scott

2012-12-21T23:59:59.000Z

458

Interaction between mantle-derived and crustal calc-alkaline magmas in the petrogenesis of the Paleocene Sifton Range volcanic complex, Yukon, Canada  

Science Journals Connector (OSTI)

The uplifted plutons of the eastern Coast Plutonic Complex (CPC) of the northern Canadian Cordillera are in contact with coeval volcanic suites of the early Tertiary Sloko-Skukum Group, offering a unique opportunity to address the relationship between subduction-related, continental calc-alkaline volcanic sequences and their coeval granitoid suites. The Sifton Range volcanic complex (SRVC) of southwestern Yukon is intruded by CPC granites and displays a subduction-related geochemical signature with depletions in HFSE relative to LILE. The volcanic rocks range between medium- and high-K orogenic suites, and define a calc-alkaline fractionation trend. The epizonal potassium–feldspar granites are chemically similar to the SRVC rhyolites, and are characterized by highly fractionated LREE (LaN / SmN = 5–11), enrichments in LILE and Th (12–18 ppm). The SRVC exhibits a striking relationship between rock composition and style of eruption, with a reduction in abundance of lavas with increasing SiO2 being correlated with the appearance of felsic pyroclastic rocks and granitic plutonism. Thermodynamic crystal fractionation models of the compositional interval between basaltic and dacitic andesite (52–61 wt.% SiO2) are consistent with evolution at moderately hydrous (1.5 wt.% H2O), upper crustal (1.5 kbar) conditions, and fO2 close to the QFM buffer. Neither assimilation-fractional crystallization (AFC), nor binary magma mixing models are capable of explaining the anomalously elevated Th contents in the SRVC felsic lavas and granites. Furthermore, unrealistically high contamination factors (r > 2.5) are required in AFC models to attain the incompatible-element concentrations of the SRVC granite and rhyolites, suggesting they represent distinct melts derived by anatexis of enriched upper crust, rather than the evolved products of the mafic SRVC magma. Changes in crystallinity during evolution of the SRVC magmas imply an abrupt rise in effective viscosity (from 106 to 1010 Pa s) near the andesite–dacite transition as a result of the flocculation of plagioclase phenocrysts. The resultant increase in shear strength impeded crystal fractionation and eruption of lavas, and may account for the decrease in the abundance of flows with more than 62 wt.% SiO2. The onset of explosive volcanism at c.a. 68 wt.% SiO2 approximately coincides with the calculated saturation point of H2O at 1.5 kbar in the hybridized dacite magmas. Alternating mafic and felsic volcanic stratigraphy along with the presence of compositionally bimodal pyroclastics and mixed phenocrysts in the SRVC dacites suggest that mantle-derived magmas and crustal melts coexisted in a zoned magmatic column undergoing episodic injection of juvenile melts. Sudden release of volatiles from the hybrid dacitic magmas along the interface with the overlying anatectic crystal mush may have triggered the cycle of explosive eruptions of dominantly rhyolitic ejecta. The consequent loss of volatiles further promoted feldspar crystallization eventually favouring magma stagnation and plutonism.

Aleksandar Miškovi?; Don Francis

2006-01-01T23:59:59.000Z

459

Multi-phase glass-ceramics as a waste form for combined fission products: alkalis, alkaline earths, lanthanides, and transition metals  

SciTech Connect

In this study, multi-phase silicate-based glass-ceramics were investigated as an alternate waste form for immobilizing non-fissionable products from used nuclear fuel. Currently, borosilicate glass is the waste form selected for immobilization of this waste stream, however, the low thermal stability and solubility of MoO{sub 3} in borosilicate glass translates into a maximum waste loading in the range of 15-20 mass%. Glass-ceramics provide the opportunity to target durable crystalline phases, e.g., powellite, oxyapatite, celsian, and pollucite, that will incorporate MoO{sub 3} as well as other waste components such as lanthanides, alkalis, and alkaline earths at levels 2X the solubility limits of a single-phase glass. In addition a glass-ceramic could provide higher thermal stability, depending upon the properties of the crystalline and amorphous phases. Glass-ceramics were successfully synthesized at waste loadings of 42, 45, and 50 mass% with the following glass additives: B{sub 2}O{sub 3}, Al{sub 2}O{sub 3}, CaO and SiO{sub 2} by slow cooling form from a glass melt. Glass-ceramics were characterized in terms of phase assemblage, morphology, and thermal stability. The targeted phases: powellite and oxyapatite were observed in all of the compositions along with a lanthanide borosilicate, and cerianite. Results of this initial investigation of glass-ceramics show promise as a potential waste form to replace single-phase borosilicate glass.

Crum, Jarrod V.; Turo, Laura A.; Riley, Brian J.; Tang, Ming; Kossoy, Anna

2012-04-01T23:59:59.000Z

460

3, 771789, 2007 temperatures and  

E-Print Network (OSTI)

cooling and the onset of North American glaciation P. Huybers1 and P. Molnar2 1 Department of Earth that gradual cooling in the eastern tropical Pacific led to cooling of North America and the initiation affects North American temperature and ice-ablation. Assuming that the modern relationship holds5 over

Boyer, Edmond

Note: This page contains sample records for the topic "alkalinity temperature specific" 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

Temperature controlled high voltage regulator  

DOE Patents (OSTI)

A temperature controlled high voltage regulator for automatically adjusting the high voltage applied to a radiation detector is described. The regulator is a solid state device that is independent of the attached radiation detector, enabling the regulator to be used by various models of radiation detectors, such as gas flow proportional radiation detectors.

Chiaro, Jr., Peter J. (Clinton, TN); Schulze, Gerald K. (Knoxville, TN)

2004-04-20T23:59:59.000Z

462

High temperature lightweight foamed cements  

DOE Patents (OSTI)

Cement slurries are disclosed which are suitable for use in geothermal wells since they can withstand high temperatures and high pressures. The formulation consists of cement, silica flour, water, a retarder, a foaming agent, a foam stabilizer, and a reinforcing agent. A process for producing these cements is also disclosed. 3 figs.

Sugama, Toshifumi.

1989-10-03T23:59:59.000Z

463

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature turbine engine includes a rotor portion having axially stacked adjacent ceramic rotor parts. A ceramic/ceramic joint structure transmits torque between the rotor parts while maintaining coaxial alignment and axially spaced mutually parallel relation thereof despite thermal and centrifugal cycling.

Boyd, Gary L. (Tempe, AZ)

1991-01-01T23:59:59.000Z

464

Tree based domain-specific mapping languages  

Science Journals Connector (OSTI)

Model transformation languages have been mainly used by researchers --- the software engineering industry has not yet widely accepted the model driven software development (MDSD). One of the main reasons is the complexity of metamodelling principles ... Keywords: UML, domain-specific languages, mappings, model transformation languages

Elina Kalnina; Audris Kalnins; Agris Sostaks; Edgars Celms; Janis Iraids

2012-01-01T23:59:59.000Z

465

Synthesis for Regular Specifications over Unbounded Domains  

E-Print Network (OSTI)

Synthesis for Regular Specifications over Unbounded Domains Jad Hamza # , Barbara Jobstmann + , Viktor Kuncak # # ENS Cachan, France + CNRS/Verimag, France, # EPFL, Switzerland Abstract---Synthesis that are correct by construction. Previous work includes synthesis of reactive finite­state systems from linear

Kuncak, Viktor

466

Synthesis for Regular Specifications over Unbounded Domains  

E-Print Network (OSTI)

Synthesis for Regular Specifications over Unbounded Domains Jad Hamza, Barbara Jobstmann, Viktor Kuncak ENS Cachan, France CNRS/Verimag, France, EPFL, Switzerland Abstract--Synthesis from declarative. Previous work includes synthesis of reactive finite-state systems from linear temporal logic and its

Kuncak, Viktor

467

2IW05 Model Examination Software Specification  

E-Print Network (OSTI)

Universiteit Eindhoven (TU/e) October 25, 2012 Important Notes. It is not allowed to use study material a class diagram for the following informal specification of a cus- tomer service unit. For each caller in the client-manager system, is checked and noted. A caller is connected to a unique handling callee, which

Mousavi, Mohammad

468

2IW05 Model Examination Software Specification  

E-Print Network (OSTI)

Universiteit Eindhoven (TU/e) January 9, 2012 Important Notes. It is not allowed to use study material a class diagram for the following informal specification of a cus- tomer service unit. For each caller in the client-manager system, is checked and noted. A caller is connected to a unique handling callee, which

Mousavi, Mohammad

469

Generating Test Data From Statebased Specifications 1  

E-Print Network (OSTI)

Generating Test Data From State­based Specifications 1 A. Jefferson Offutt 1 , Shaoying Liu 2 testing in industry is conducted at the system level, most formal research has focused on the unit level. As a result, most system level testing techniques are only described informally. This paper presents formal

Offutt, Jeff

470

Transforming and Refining Abstract Constraint Specifications  

E-Print Network (OSTI)

Transforming and Refining Abstract Constraint Specifications Alan M. Frisch1 , Brahim Hnich2 , Ian choose model transformations to reduce greatly the amount of effort that is required to solve a problem by systematic search. It is a consid- erable challenge to automate such transformations. A problem may be viewed

Walsh, Toby

471

Susanville District Heating District Heating Low Temperature...  

Open Energy Info (EERE)

Susanville District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Susanville District Heating District Heating Low Temperature...

472

Litchfield Correctional Center District Heating Low Temperature...  

Open Energy Info (EERE)

Correctional Center District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Litchfield Correctional Center District Heating Low Temperature Geothermal...

473

Acid Doped Membranes for High Temperature PEMFC  

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

Presentation on Acid Doped Membranes for High Temperature PEMFC to the High Temperature Membrane Working Group, May 25, 2004 in Philadelphia, PA.

474

Novel room temperature ferromagnetic semiconductors  

SciTech Connect

Today's information world, bits of data are processed by semiconductor chips, and stored in the magnetic disk drives. But tomorrow's information technology may see magnetism (spin) and semiconductivity (charge) combined in one 'spintronic' device that exploits both charge and 'spin' to carry data (the best of two worlds). Spintronic devices such as spin valve transistors, spin light emitting diodes, non-volatile memory, logic devices, optical isolators and ultra-fast optical switches are some of the areas of interest for introducing the ferromagnetic properties at room temperature in a semiconductor to make it multifunctional. The potential advantages of such spintronic devices will be higher speed, greater efficiency, and better stability at a reduced power consumption. This Thesis contains two main topics: In-depth understanding of magnetism in Mn doped ZnO, and our search and identification of at least six new above room temperature ferromagnetic semiconductors. Both complex doped ZnO based new materials, as well as a number of nonoxides like phosphides, and sulfides suitably doped with Mn or Cu are shown to give rise to ferromagnetism above room temperature. Some of the highlights of this work are discovery of room temperature ferromagnetism in: (1) ZnO:Mn (paper in Nature Materials, Oct issue, 2003); (2) ZnO doped with Cu (containing no magnetic elements in it); (3) GaP doped with Cu (again containing no magnetic elements in it); (4) Enhancement of Magnetization by Cu co-doping in ZnO:Mn; (5) CdS doped with Mn, and a few others not reported in this thesis. We discuss in detail the first observation of ferromagnetism above room temperature in the form of powder, bulk pellets, in 2-3 mu-m thick transparent pulsed laser deposited films of the Mn (<4 at. percent) doped ZnO. High-resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS) spectra recorded from 2 to 200nm areas showed homogeneous distribution of Mn substituting for Zn a 2+ state in the ZnO lattice. Ferromagnetic Resonance (FMR) technique is used to confirm the existence of ferromagnetic ordering at temperatures as high as 425K. The ab initio calculations were found to be consistent with the observation of ferromagnetism arising from fully polarized Mn 2+ state. The key to observed room temperature ferromagnetism in this system is the low temperature processing, which prevents formation of clusters, secondary phases and the host ZnO from becoming n-type. The electronic structure of the same Mn doped ZnO thin films studied using XAS, XES and RIXS, revealed a strong hybridization between Mn 3d and O 2p states, which is an important characteristic of a Dilute magnetic Semiconductor (DMS). It is shown that the various processing conditions like sintering temperature, dopant concentration and the properties of precursors used for making of DMS have a great influence on the final properties. Use of various experimental techniques to verify the physical properties, and to understand the mechanism involved to give rise to ferromagnetism is presented. Methods to improve the magnetic moment in Mn doped ZnO are also described. New promising DMS materials (such as Cu doped ZnO are explored). The demonstrated new capability to fabricate powder, pellets, and thin films of room temperature ferromagnetic semiconductors thus makes possible the realization of a wide range of complex elements for a variety of new multifunctional phenomena related to Spintronic devices as well as magneto-optic components.

Gupta, Amita

2004-11-01T23:59:59.000Z

475

Field dependences of magnetization and specific-heat coefficient in a nearly magnetic system: Liquid /sup 3/He and strong Pauli paramagnets  

SciTech Connect

We analytically derive the first-order magnetic-field dependences of the magnetization M and of the coefficient ..gamma.. of the specific heat, in a nearly magnetic paramagnet, at low temperature.

Beal-Monod, M.T.; Daniel, E.

1983-04-01T23:59:59.000Z

476

Baseline Concept Description of a Small Modular High Temperature Reactor  

SciTech Connect

The objective of this report is to provide a description of generic small modular high temperature reactors (herein denoted as an smHTR), summarize their distinguishing attributes, and lay out the research and development (R&D) required for commercialization. The generic concepts rely heavily on the modular high temperature gas-cooled reactor designs developed in the 1980s which were never built but for which pre-licensing or certification activities were conducted. The concept matured more recently under the Next Generation Nuclear Plant (NGNP) project, specifically in the areas of fuel and material qualification, methods development, and licensing. As all vendor-specific designs proposed under NGNP were all both ‘small’ or medium-sized and ‘modular’ by International Atomic Energy Agency (IAEA) and Department of Energy (DOE) standards, the technical attributes, challenges, and R&D needs identified, addressed, and documented under NGNP are valid and appropriate in the context of Small Modular Reactor (SMR) applications. Although the term High Temperature Reactor (HTR) is commonly used to denote graphite-moderated, thermal spectrum reactors with coolant temperatures in excess of 650oC at the core outlet, in this report the historical term High Temperature Gas-Cooled Reactor (HTGR) will be used to distinguish the gas-cooled technology described herein from its liquid salt-cooled cousin. Moreover, in this report it is to be understood that the outlet temperature of the helium in an HTGR has an upper limit of 950 degrees C which corresponds to the temperature to which certain alloys are currently being qualified under DOE’s ARC program. Although similar to the HTGR in just about every respect, the Very High Temperature Reactor (VHTR) may have an outlet temperature in excess of 950 degrees C and is therefore farther from commercialization because of the challenges posed to materials exposed to these temperatures. The VHTR is the focus of R&D under the Generation IV program and its specific R&D needs will be included in this report when appropriate for comparison. The distinguishing features of the HTGR are the refractory (TRISO) coated particle fuel, the low-power density, graphite-moderated core, and the high outlet temperature of the inert helium coolant. The low power density and fuel form effectively eliminate the possibility of core melt, even upon a complete loss of coolant pressure and flow. The graphite, which constitutes the bulk of the core volume and mass, provides a large thermal buffer that absorbs fission heat such that thermal transients occur over a timespan of hours or even days. As chemically-inert helium is already a gas, there is no coolant temperature or void feedback on the neutronics and no phase change or corrosion product that could degrade heat transfer. Furthermore, the particle coatings and interstitial graphite retain fission products such that the source terms at the plant boundary remain well below actionable levels under all anticipated nominal and off-normal operating conditions. These attributes enable the reactor to supply process heat to a collocated industrial plant with negligible risk of contamination and minimal dynamic coupling of the facilities (Figure 1). The exceptional retentive properties of coated particle fuel in a graphite matrix were first demonstrated in the DRAGON reactor, a European research facility that began operation in 1964.

Hans Gougar

2014-05-01T23:59:59.000Z

477

Ethanol fermentation from molasses at high temperature by thermotolerant yeast Kluyveromyces sp. IIPE453 and energy assessment for recovery  

Science Journals Connector (OSTI)

High temperature ethanol fermentation from sugarcane molasses B using thermophilic...Kluyveromyces...sp. IIPE453 was carried out in batch bioreactor system. Strain was found to have a maximum specific ethanol pr...

Diptarka Dasgupta; Prasenjit Ghosh…

2014-10-01T23:59:59.000Z

478

A Domain Specific Property Language For Fraud Detection To Support Agile Specification Development  

E-Print Network (OSTI)

A Domain Specific Property Language For Fraud Detection To Support Agile Specification Development Fraud detection is vital in any financial transaction system, including the collection of tax. The identification of fraud cases was traditionally carried out manually, having fraud experts going through

Pace, Gordon J.

479

Security Policy Specification Using a Graphical Approach Page 1 Security Policy Specification Using a Graphical  

E-Print Network (OSTI)

Security Policy Specification Using a Graphical Approach Page 1 Security Policy Specification Using of California, Davis {hoagland,pandey,levitt}@cs.ucdavis.edu Technical Report CSE-98-3 A security policy states for organizations to declare their security policies, even informal state- ments would be better than the current

California at Davis, University of

480

Digital RNA allelotyping reveals tissue-specific and allele-specific gene expression in human  

E-Print Network (OSTI)

characterized four cell lines established from two human subjects in the Personal Genome Project. Approximately the comprehensive mapping of linkage disequilibrium in the human genome. The block-like distribution of linkageDigital RNA allelotyping reveals tissue-specific and allele-specific gene expression in human Kun

Cai, Long

Note: This page contains sample records for the topic "alkalinity temperature specific" 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.


481

Digital RNA allelotyping reveals tissue-specific and allele-specific gene expression in human  

E-Print Network (OSTI)

characterized four cell lines established from two human subjects in the Personal Genome Project. Approximately the comprehensive mapping of linkage disequilibrium in the human genome. The block like distribution of linkageDigital RNA allelotyping reveals tissue-specific and allele-specific gene expression in human Kun

Church, George M.

482

Air Cooling for High Temperature Power Electronics (Presentation)  

SciTech Connect

Current emphasis on developing high-temperature power electronics, including wide-bandgap materials such as silicon carbide and gallium nitride, increases the opportunity for a completely air-cooled inverter at higher powers. This removes the liquid cooling system for the inverter, saving weight and volume on the liquid-to-air heat exchanger, coolant lines, pumps, and coolant, replacing them with just a fan and air supply ducting. We investigate the potential for an air-cooled heat exchanger from a component and systems-level approach to meet specific power and power density targets. A proposed baseline air-cooled heat exchanger design that does not meet those targets was optimized using a parametric computational fluid dynamics analysis, examining the effects of heat exchanger geometry and device location, fixing the device heat dissipation and maximum junction temperature. The CFD results were extrapolated to a full inverter, including casing, capacitor, bus bar, gate driver, and control board component weights and volumes. Surrogate ducting was tested to understand the pressure drop and subsequent system parasitic load. Geometries that met targets with acceptable loads on the system were down-selected for experimentation. Nine baseline configuration modules dissipated the target heat dissipation, but fell below specific power and power density targets. Six optimized configuration modules dissipated the target heat load, exceeding the specific power and power density targets. By maintaining the same 175 degrees C maximum junction temperature, an optimized heat exchanger design and higher device heat fluxes allowed a reduction in the number of modules required, increasing specific power and power density while still maintaining the inverter power.

Waye, S.; Musselman, M.; King, C.

2014-09-01T23:59:59.000Z

483

Rigid-Band Behavior in Aluminum-Based Alloys—Electronic Specific Heat  

Science Journals Connector (OSTI)

Measurements of the specific heat of aluminum and its dilute alloys below 4°K show that the electronic specific-heat coefficient ? changes linearly with the valence electron concentration from below to above the pure-aluminum value, in contradiction to previous work. The difference is attributed to undetected precipitation of the solutes Ge or Si in the previous work. Good agreement is found between ? values for AlZn alloys and the previous AlMg alloys. The rate of increase of ? is three times that expected from free-electron theory. For pure Al, ?=1.362 mJ mole-1 °K-2, and the Debye temperature =431°K.

Donald A. Dicke and Ben A. Green; Jr.

1967-01-15T23:59:59.000Z

484

NEW OPTICAL SENSOR SUITE FOR ULTRAHIGH TEMPERATURE FOSSIL FUEL APPLICATIONS  

SciTech Connect

Accomplishments during the Phase I of a program to develop and demonstrate technology for the instrumentation of advanced powerplants are described. Engineers from Prime Research, LC and Babcock and Wilcox Research Center collaborated to generate a list of potential applications for robust photonic sensors in existing and future boiler plants. From that list, three applications were identified as primary candidates for initial development and demonstration of high-temperature sensors in an ultrasupercritical power plant. A matrix of potential fiber optic sensor approaches was derived, and a data set of specifications for high-temperature optical fiber was produced. Several fiber optic sensor configurations, including interferometric (extrinsic and intrinsic Fabry-Perot interferometer), gratings (fiber Bragg gratings and long period gratings), and microbend sensors, were evaluated in the laboratory. In addition, progress was made in the development of materials and methods to apply high-temperature optical claddings to sapphire fibers, in order to improve their optical waveguiding properties so that they can be used in the design and fabrication of high-temperature sensors. Through refinements in the processing steps, the quality of the interface between core and cladding of the fibers was improved, which is expected to reduce scattering and attenuation in the fibers. Numerical aperture measurements of both clad and unclad sapphire fibers were obtained and used to estimate the reduction in mode volume afforded by the cladding. High-temperature sensors based on sapphire fibers were also investigated. The fabrication of an intrinsic Fabry-Perot cavity within sapphire fibers was attempted by the bulk diffusion of magnesium oxide into short localized segments of longer sapphire fibers. Fourier analysis of the fringes that resulted when the treated fiber was interrogated by a swept laser spectrometer suggested that an intrinsic cavity had been formed in the fiber. Also, an unclad sapphire fiber was tested as a temperature sensor at moderate temperatures (up to 775 C).

Russell G. May; Tony Peng; Tom Flynn

2004-12-01T23:59:59.000Z

485

Alkaline Electrolysis Final Technical Report  

SciTech Connect

In this project, GE developed electrolyzer stack technologies to meet DOE’s goals for low cost electrolysis hydrogen. The main barrier to meeting the targets for electrolyzer cost was in stack assembly and construction. GE’s invention of a single piece or “monolithic” plastic electrolyzer stack reduces these costs considerably. In addition, GE developed low cost cell electrodes using a novel application of metal spray coating technology. Bench scale stack testing and cost modeling indicates that the DOE targets for stack capital cost and efficiency can be met by full-scale production of industrial electrolyzers incorporating GE’s stack technology innovations.

RIchard Bourgeois; Steven Sanborn; Eliot Assimakopoulos

2006-07-13T23:59:59.000Z

486

Recycled Plastics in FCC Feedstocks:? Specific Contributions  

Science Journals Connector (OSTI)

Recycled Plastics in FCC Feedstocks:? Specific Contributions ... Zhibo, Z.; Nishio, S.; Morioka, Y.; Ueno, A.; Ohkita, H.; Tochihara, Y.; Mizushima, P.; Kakuta, N. Thermal and chemical recycle of waste polymers. ... Feedstock recycling of plastic waste by thermal and catalytic processes is a promising route to eliminate this refuse (which is harmful to the environment) by obtaining, at the same time, products that are useful as fuels or chemicals. ...

Gabriela de la Puente; José M. Arandes; Ulises A. Sedran

1997-11-03T23:59:59.000Z

487

Product specification Supersedes data of September 1994  

E-Print Network (OSTI)

specification NPN switching transistors 2N2222; 2N2222A FEATURES · High current (max. 800 mA) · Low voltage (max collector current (DC) - 800 mA Ptot total power dissipation Tamb 25 °C - 500 mW hFE DC current gain IC = 10 mA; VCE = 10 V 75 - fT transition frequency IC = 20 mA; VCE = 20 V; f = 100 MHz 2N2222 250 - MHz 2

Ravikumar, B.

488

Cell-Specific Targeting by Heterobivalent Ligands  

Science Journals Connector (OSTI)

As a proof-of-concept that functionally unrelated receptors can be noncovalently cross-linked with high avidity and specificity, a series of heterobivalent ligands (htBVLs) were constructed from analogues of the melanocortin peptide ligand ([Nle4, dPhe7]-?-MSH) and the cholecystokinin peptide ligand (CCK-8). ... For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder. ...

Jatinder S. Josan; Heather L. Handl; Rajesh Sankaranarayanan; Liping Xu; Ronald M. Lynch; Josef Vagner; Eugene A. Mash; Victor J. Hruby; Robert J. Gillies

2011-06-03T23:59:59.000Z

489

Generic temperature compensation of biological clocks by autonomous regulation of catalyst concentration  

E-Print Network (OSTI)

Circadian clocks ubiquitous in life forms ranging bacteria to multi-cellular organisms, often exhibit intrinsic temperature compensation; the period of circadian oscillators is maintained constant over a range of physiological temperatures, despite the expected Arrhenius form for the reaction coefficient. Observations have shown that the amplitude of the oscillation depends on the temperature but the period does not---this suggests that although not every reaction step is temperature independent, the total system comprising several reactions still exhibits compensation. We present a general mechanism for such temperature compensation. Consider a system with multiple activation energy barriers for reactions, with a common enzyme shared across several reaction steps with a higher activation energy. These reaction steps rate-limit the cycle if the temperature is not high. If the total abundance of the enzyme is limited, the amount of free enzyme available to catalyze a specific reaction decreases as more substra...

Hatakeyama, Tetsuhiro S

2011-01-01T23:59:59.000Z

490

Battery system with temperature sensors  

SciTech Connect

A battery system includes a platform having an aperture formed therethrough, a flexible member having a generally planar configuration and extending across the aperture, wherein a portion of the flexible member is coextensive with the aperture, a cell provided adjacent the platform, and a sensor coupled to the flexible member and positioned proximate the cell. The sensor is configured to detect a temperature of the cell.

Wood, Steven J; Trester, Dale B

2014-02-04T23:59:59.000Z

491

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1994-01-01T23:59:59.000Z

492

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1993-01-01T23:59:59.000Z

493

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1992-01-01T23:59:59.000Z

494

Site Specific Records Schedules | Department of Energy  

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

Site Specific Records Schedules Site Specific Records Schedules Site Specific Records Schedules NOTE: Most of the files below are in PDF, you will need Acrobat® Reader(tm) to view these files. TITLE DATE LAST CHANGED AUTHORIZATION NUMBER AEC -- Administrative Record (pdf) 01/15/01 II-NNA-6754 AEC -- Nuclear Power Plant Docket Records (pdf) 01/15/01 NC-174-231 AEC -- Power Reactor Records (pdf) 01/15/01 II-NNA-2110 Alaska Power Administration (pdf) 02/09/01 N1-447-97-1 Appointee Clearance and Vetting Files (pdf) 09/10/02 N1-434-96-3 Bettis Atomic Laboratory Naval Reactors (pdf) 09/09/91 N1-434-91-8 Bonneville Power Administration (pdf) 08/06/07 N1-305-07-1 Cyclotron Records, Lawrence Berkeley National Laboratory (pdf) 12/22/88 N1-434-89-7 Energy Information Administration (EIARS) (pdf) 10/21/03 N1-434-96-2

495

Variable temperature semiconductor film deposition  

DOE Patents (OSTI)

A method of depositing a semiconductor material on a substrate is disclosed. The method sequentially comprises (a) providing the semiconductor material in a depositable state such as a vapor for deposition on the substrate; (b) depositing the semiconductor material on the substrate while heating the substrate to a first temperature sufficient to cause the semiconductor material to form a first film layer having a first grain size; (c) continually depositing the semiconductor material on the substrate while cooling the substrate to a second temperature sufficient to cause the semiconductor material to form a second film layer deposited on the first film layer and having a second grain size smaller than the first grain size; and (d) raising the substrate temperature, while either continuing or not continuing to deposit semiconductor material to form a third film layer, to thereby anneal the film layers into a single layer having favorable efficiency characteristics in photovoltaic applications. A preferred semiconductor material is cadmium telluride deposited on a glass/tin oxide substrate already having thereon a film layer of cadmium sulfide.

Li, X.; Sheldon, P.

1998-01-27T23:59:59.000Z

496

Quantifying Temperature Effects on Fall Chinook Salmon  

SciTech Connect

The motivation for this study was to recommend relationships for use in a model of San Joaquin fall Chinook salmon. This report reviews literature pertaining to relationships between water temperature and fall Chinook salmon. The report is organized into three sections that deal with temperature effects on development and timing of freshwater life stages, temperature effects on incubation survival for eggs and alevin, and temperature effects on juvenile survival. Recommendations are made for modeling temperature influences for all three life stages.

Jager, Yetta [ORNL

2011-11-01T23:59:59.000Z

497

Scaling in high-temperature superconductors  

Science Journals Connector (OSTI)

A Hartree approximation is used to study the interplay of two kinds of scaling which arise in high-temperature superconductors, namely critical-point scaling and that due to the confinement of electron pairs to their lowest Landau level in the presence of an applied magnetic field. In the neighborhood of the zero-field critical point, thermodynamic functions scale with the scaling variable [T-Tc2(B)]/B1/2?, which differs from the variable [T-Tc(0)]/B1/2? suggested by the Gaussian approximation. Lowest-Landau-level (LLL) scaling occurs in a region of high field surrounding the upper critical-field line but not in the vicinity of the zero-field transition. For YBa2Cu3O7-? in particular, a field of at least 10 T is needed to observe LLL scaling. These results are consistent with a range of recent experimental measurements of the magnetization, transport properties, and, especially, the specific heat of high-Tc materials.

Ian D. Lawrie

1994-10-01T23:59:59.000Z

498

Face Recognition Deficits in Autism Spectrum Disorders Are Both Domain Specific and Process Specific  

E-Print Network (OSTI)

Although many studies have reported face identity recognition deficits in autism spectrum disorders (ASD), two fundamental question remains: 1) Is this deficit “process specific” for face memory in particular, or does it ...

Weigelt, Sarah

499

Codes and Standards: Hydrogen Fuel Purity Specifications  

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

Codes and Standards: Codes and Standards: Hydrogen Fuel Purity Specifications Walter F. Podolski Fuel Purity Workshop Los Angeles, CA April 26, 2004 ChevronTexaco ConocoPhillips EXONMobil FreedomCAR and Fuel Partnership Organizational Structure Codes and Standards for Commercial Hydrogen/Fuel Cell Vehicles Goal is to support commercialization decision in the 2015 timeframe * Ensure acceptability to all stake-holders - Regulators, insurers, public * Enable commercial feasibility * Facilitate rapid introduction of technical advances Issues * What we want to avoid - Premature Standards, Codes, and Regulations that slow introduction of new technologies - Competing national and international SDOs and professional organizations * What we want to encourage - Flexible guidelines that enable demonstration

500

Composition Semantics of the Rosetta Specification Language  

E-Print Network (OSTI)

- log components that must communicate; a house is at once a load-bearing structure, an electrically wired system, an HVAC system, and must obey certain accessibility, zoning, and safety regulations; and an aircraft must fly, consume power, and deliver... with problem specific definitions. For example, a digital adder might be written in the discrete_time domain while a filter might be written in the frequency domain. In these cases, the domain is like the type of the facet. Rosetta includes a pre-defined domain...

Peck, Megan Elizabeth

2012-08-31T23:59:59.000Z