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1

Ethylene oxidation by lithium nitrate in the presence of palladium acetate in acetic acid  

Science Journals Connector (OSTI)

Data are reported on variations of the gas phase volume and product accumulation in ethylene oxidation by lithium nitrate in acetic acid solutions, catalyzed by palladium acetate. An assumption is made on the rou...

N. I. Kuznetsova; A. F. Danilyuk…

2

Original article Ethanol and acetic-acid tolerance  

E-Print Network (OSTI)

Original article Ethanol and acetic-acid tolerance in Indian geographical populations of Drosophila clines of ethanol toler- ance (1.5-4.2%) and acetic-acid tolerance (2.9-4.9%) were observed in adult individuals of 4 geographical populations of Drosophila immigrans. Thus, both ethanol and acetic

Paris-Sud XI, Université de

3

Original article Ethanol and acetic-acid tolerances  

E-Print Network (OSTI)

Original article Ethanol and acetic-acid tolerances in Drosophila melanogaster: similar maternal) Summary - Ethanol and acetic-acid tolerances were studied in a cross between 2 geo- graphic races disappeared in the F2. Further investigations demonstrated that for ethanol tolerance, the large difference

Paris-Sud XI, Université de

4

E-Print Network 3.0 - ammonia acetic acid Sample Search Results  

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

fluminic acid, or hydrogen. NITRIC ACID with: acetic... with: water, carbon dioxide, carbon tetrachloride, and other chlorinated hydrocarbons. ACETIC ACID with......

5

Tetrazole acetic acid: Tautomers, conformers, and isomerization  

SciTech Connect

Monomers of (tetrazol-5-yl)-acetic acid (TAA) were obtained by sublimation of the crystalline compound and the resulting vapors were isolated in cryogenic nitrogen matrices at 13 K. The conformational and tautomeric composition of TAA in the matrix was characterized by infrared spectroscopy and vibrational calculations carried out at the B3LYP/6-311++G(d,p) level. TAA may adopt two tautomeric modifications, 1H- and 2H-, depending on the position of the annular hydrogen atom. Two-dimensional potential energy surfaces (PESs) of TAA were theoretically calculated at the MP2/6-311++G(d,p) level, for each tautomer. Four and six symmetry-unique minima were located on these PESs, for 1H- and 2H-TAA, respectively. The energetics of the detected minima was subsequently refined by calculations at the QCISD level. Two 1H- and three 2H-conformers fall within the 0–8 kJ mol{sup ?1} energy range and should be appreciably populated at the sublimation temperature (?330 K). Observation of only one conformer for each tautomer (1ccc and 2pcc) is explained in terms of calculated barriers to conformational rearrangements. All conformers with the cis O=COH moiety are separated by low barriers (less than 10 kJ mol{sup ?1}) and collapse to the most stable 1ccc (1H-) and 2pcc (2H-) forms during deposition of the matrix. On the trans O=COH surfaces, the relative energies are very high (between 12 and 27 kJ mol{sup ?1}). The trans forms are not thermally populated at the sublimation conditions and were not detected in matrices. One high-energy form in each tautomer, 1cct (1H-) and 2pct (2H-), was found to differ from the most stable form only by rotation of the OH group and separated from other forms by high barriers. This opened a perspective for their stabilization in a matrix. 1cct and 2pct were generated in the matrices selectively by means of narrow-band near-infrared (NIR) irradiations of the samples at 6920 and 6937 cm{sup ?1}, where the first OH stretching overtone vibrations of 1ccc and 2pcc occur. The reverse transformations could be induced by irradiations at 7010 and 7030 cm{sup ?1}, transforming 1cct and 2pct back to 1ccc and 2pcc, also selectively. Besides the NIR-induced transformations, the photogenerated 1cct and 2pct forms also decay in N{sub 2} matrices back to 1ccc and 2pcc spontaneously, with characteristic decay times of hours (1H) and tens of minutes (2H). The decay mechanism is rationalized in terms of the proton tunneling. In crystals, TAA exists exclusively as 1H-tautomer. By contrast, the tautomeric composition of the matrix-isolated monomers was found to consist of both 1H- and 2H-tautomers, in comparable amounts. A mechanistic discussion of the tautomerization process occurring during sublimation, accounting also for the observed minor decomposition of TAA leading to CO{sub 2} and 5-methyl-tetrazole, is proposed.

Araujo-Andrade, C. [Unidad Académica de Física de la Universidad Autónoma de Zacatecas, Zacatecas (Mexico) [Unidad Académica de Física de la Universidad Autónoma de Zacatecas, Zacatecas (Mexico); Department of Chemistry, University of Coimbra, 3004-535 Coimbra (Portugal); Reva, I., E-mail: reva@qui.uc.pt; Fausto, R. [Department of Chemistry, University of Coimbra, 3004-535 Coimbra (Portugal)] [Department of Chemistry, University of Coimbra, 3004-535 Coimbra (Portugal)

2014-02-14T23:59:59.000Z

6

Two-dimensional hydrogen-bonded polymers in the crystal structures of the ammonium salts of phen­oxy­acetic acid, (4-fluoro­phen­oxy)acetic acid and (4-chloro-2-methyl­phen­oxy)acetic acid  

Science Journals Connector (OSTI)

The crystal of the isomorphous anhydrous ammonium salts of phen­oxy­acetic acid and (4-fluoro­phen­oxy)acetic acid and that of the hemihydrate ammonium salt of 4-chloro-2-methyl­phen­oxy)acetic acid show two-dimensional layered structures based on conjoined cyclic hydrogen-bonded motifs.

Smith, G.

2014-11-19T23:59:59.000Z

7

Acetic Acid from the Carbonylation of Chloride Methane Over Rhodium Based Catalysts  

E-Print Network (OSTI)

of commercially important materials like vinyl acetate monomer (VAM), cellulose acetate, and acetate esters. MoreAcetic Acid from the Carbonylation of Chloride Methane Over Rhodium Based Catalysts Yafang Fan Ã? that makes use of the latest advance in methyl chloride production is reported. Acetic acid was produced from

Bao, Xinhe

8

Reaction kinetics of the esterification reaction between ethanol and acetic acid catalyzed by Keggin heteropolyacids  

Science Journals Connector (OSTI)

Heteropolyacids (HPAs), such as silicotungstic (HSiW), phosphotungstic (HPW), and phosphomolybdic (HPMo) acids, effectively catalyzed the esterification reaction between ethanol and acetic acid. The catalytic act...

Xiufeng Lu; Hengbo Yin; Lingqin Shen…

2014-02-01T23:59:59.000Z

9

Acetic Acid Production by Clostridium thermoaceticum in pH-Controlled Batch Fermentations at Acidic pH  

Science Journals Connector (OSTI)

...and the conversion efficiencies to acetic acid and...neutral pH. The highest acetic acid concentrations...acetic acid, and efficiency of converting glucose...the CO2 was of the highest purity attainable...valve completely and venting for 90 s, closing...ii) A glass furnace tube was packed...

Robert D. Schwartz; Frederick A. Keller Jr.

1982-06-01T23:59:59.000Z

10

E-Print Network 3.0 - acetic acid trichloro- Sample Search Results  

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

acetic acid, 100% solution... or bottom of the tube). 5) Add 0.5 ml cold acetone, vortex briefly. (This is to remove the acid.) 6) Spin 15 Source: Doering, Tamara - Department...

11

Metabolic regulation of the plant hormone indole-3-acetic acid  

SciTech Connect

The phytohormone indole-3-acetic acid (IAA, auxin) is important for many aspects of plant growth, development and responses to the environment yet the routes to is biosynthesis and mechanisms for regulation of IAA levels remain important research questions. A critical issue concerning the biosynthesis if IAA in plants is that redundant pathways for IAA biosynthesis exist in plants. We showed that these redundant pathways and their relative contribution to net IAA production are under both developmental and environmental control. We worked on three fundamental problems related to how plants get their IAA: 1) An in vitro biochemical approach was used to define the tryptophan dependent pathway to IAA using maize endosperm, where relatively large amounts of IAA are produced over a short developmental period. Both a stable isotope dilution and a protein MS approach were used to identify intermediates and enzymes in the reactions. 2) We developed an in vitro system for analysis of tryptophan-independent IAA biosynthesis in maize seedlings and we used a metabolite profiling approach to isolate intermediates in this reaction. 3) Arabidopsis contains a small family of genes that encode potential indolepyruvate decarboxylase enzymes. We cloned these genes and studied plants that are mutant in these genes and that over-express each member in the family in terms of the level and route of IAA biosynthesis. Together, these allowed further development of a comprehensive picture of the pathways and regulatory components that are involved in IAA homeostasis in higher plants.

Jerry D. Cohen

2009-11-01T23:59:59.000Z

12

Scaleable production and separation of fermentation-derived acetic acid. Final CRADA report.  

SciTech Connect

Half of U.S. acetic acid production is used in manufacturing vinyl acetate monomer (VAM) and is economical only in very large production plants. Nearly 80% of the VAM is produced by methanol carbonylation, which requires high temperatures and exotic construction materials and is energy intensive. Fermentation-derived acetic acid production allows for small-scale production at low temperatures, significantly reducing the energy requirement of the process. The goal of the project is to develop a scaleable production and separation process for fermentation-derived acetic acid. Synthesis gas (syngas) will be fermented to acetic acid, and the fermentation broth will be continuously neutralized with ammonia. The acetic acid product will be recovered from the ammonium acid broth using vapor-based membrane separation technology. The process is summarized in Figure 1. The two technical challenges to success are selecting and developing (1) microbial strains that efficiently ferment syngas to acetic acid in high salt environments and (2) membranes that efficiently separate ammonia from the acetic acid/water mixture and are stable at high enough temperature to facilitate high thermal cracking of the ammonium acetate salt. Fermentation - Microbial strains were procured from a variety of public culture collections (Table 1). Strains were incubated and grown in the presence of the ammonium acetate product and the fastest growing cultures were selected and incubated at higher product concentrations. An example of the performance of a selected culture is shown in Figure 2. Separations - Several membranes were considered. Testing was performed on a new product line produced by Sulzer Chemtech (Germany). These are tubular ceramic membranes with weak acid functionality (see Figure 3). The following results were observed: (1) The membranes were relatively fragile in a laboratory setting; (2) Thermally stable {at} 130 C in hot organic acids; (3) Acetic acid rejection > 99%; and (4) Moderate ammonia flux. The advantages of producing acetic acid by fermentation include its appropriateness for small-scale production, lower cost feedstocks, low energy membrane-based purification, and lower temperature and pressure requirements. Potential energy savings of using fermentation are estimated to be approximately 14 trillion Btu by 2020 from a reduction in natural gas use. Decreased transportation needs with regional plants will eliminate approximately 200 million gallons of diesel consumption, for combined savings of 45 trillion Btu. If the fermentation process captures new acetic acid production, savings could include an additional 5 trillion Btu from production and 7 trillion Btu from transportation energy.

Snyder, S. W.; Energy Systems

2010-02-08T23:59:59.000Z

13

Catalytic oxidative conversion of cellulosic biomass to formic acid and acetic acid with exceptionally high yields  

Science Journals Connector (OSTI)

Abstract Direct conversion of raw biomass materials to fine chemicals is of great significance from both economic and ecological perspectives. In this paper, we report that a Keggin-type vanadium-substituted phosphomolybdic acid catalyst, namely H4PVMo11O40, is capable of converting various biomass-derived substrates to formic acid and acetic acid with high selectivity in a water medium and oxygen atmosphere. Under optimized reaction conditions, \\{H4PVMo11O40\\} gave an exceptionally high yield of formic acid (67.8%) from cellulose, far exceeding the values achieved in previous catalytic systems. Our study demonstrates that heteropoly acids are generally effective catalysts for biomass conversion due to their strong acidities, whereas the composition of metal addenda atoms in the catalysts has crucial influence on the reaction pathway and the product selectivity.

Jizhe Zhang; Miao Sun; Xin Liu; Yu Han

2014-01-01T23:59:59.000Z

14

Effect of acetic acid on lipid accumulation by glucose-fed activated sludge cultures  

SciTech Connect

The effect of acetic acid, a lignocellulose hydrolysis by-product, on lipid accumulation by activated sludge cultures grown on glucose was investigated. This was done to assess the possible application of lignocellulose as low-cost and renewable fermentation substrates for biofuel feedstock production. Results: Biomass yield was reduced by around 54% at a 2 g L -1 acetic acid dosage but was increased by around 18% at 10 g L -1 acetic acid dosage relative to the control run. The final gravimetric lipid contents at 2 and 10 g L -1 acetic acid levels were 12.5 ���± 0.7% and 8.8 ���± 3.2% w/w, respectively, which were lower than the control (17.8 ���± 2.8% w/w). However, biodiesel yields from activated sludge grown with acetic acid (5.6 ���± 0.6% w/w for 2 g L -1 acetic acid and 4.2 ���± 3.0% w/w for 10 g L -1 acetic acid) were higher than in raw activated sludge (1-2% w/w). The fatty acid profiles of the accumulated lipids were similar with conventional plant oil biodiesel feedstocks. Conclusions: Acetic acid enhanced biomass production by activated sludge at high levels but reduced lipid production. Further studies are needed to enhance acetic acid utilization by activated sludge microorganisms for lipid biosynthesis.

Mondala, Andro; Hernandez, Rafael; French, Todd; McFarland, Linda; Sparks, Darrell; Holmes, William; Haque, Monica

2012-01-01T23:59:59.000Z

15

Oxidation of ethane to ethylene and acetic acid by MoVNbO catalysts M. Roussel1  

E-Print Network (OSTI)

1 Oxidation of ethane to ethylene and acetic acid by MoVNbO catalysts M. Roussel1 , M. Bouchard1 catalytic properties in the oxidation of ethane to ethylene and acetic acid is examined. Solids based on Mo and nanosize of MoO3 and (VNbMo)5O14 crystals. The high global selectivity to ethylene and acetic acid (90

Paris-Sud XI, Université de

16

E-Print Network 3.0 - acetic acid allyl Sample Search Results  

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

on the Origin of Selectivity of the Asymmetric Allylic Alkylation Summary: the use of additives such as TBAF, N(Bu)4Cl, N(Bu)4I, or acetic acid were ineffective in raising......

17

Enhancing the Efficacy of Photodynamic Cancer Therapy by Radicals from Plant Auxin (Indole-3-Acetic Acid)  

Science Journals Connector (OSTI)

...PDT, photodynamic therapy; MB, methylene blue; TB, toluidine blue; IAA, indole-3-acetic acid; LED, light-emitting diode; MOI, 3-methylene-2-oxindole; HPLC, high-performance liquid chromatography. Fig. 1. Pathways involved...

Lisa K. Folkes and Peter Wardman

2003-02-15T23:59:59.000Z

18

Transport of acetic acid in Zygosaccharomyces bailii: effects of ethanol and their implications on the resistance of the yeast to acidic environments.  

Science Journals Connector (OSTI)

...with acetic acid, ethanol, or glycerol as the sole carbon and energy source transported...bailii: effects of ethanol and their implications...with acetic acid, ethanol, or glycerol as the sole carbon and energy source transported...

M J Sousa; L Miranda; M Côrte-Real; C Leão

1996-09-01T23:59:59.000Z

19

The feeding value of water and acetic acid reconstituted sorghum grain for lactating dairy cows  

E-Print Network (OSTI)

THE FEEDING VALUE OF WATER AND ACETIC ACID RECONSTITUTED SORGHUM GRAIN FOR LACTATING DAIRY COWS A Thesis by DAVID HEINIE BADE Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE May 1972 Major Subject: Animal Nutrition THE FEEDING VALUE OF WATER AND ACETIC ACID RECONSTITUTED SORGHUM GRAIN FOR LACTATING DAIRY COWS A Thesis by DAVID HEINIE BADE Approved as to style and content by: C ' man o Committee...

Bade, David Heinie

2012-06-07T23:59:59.000Z

20

Spray-chilling and carcass decontamination systems using lactic and acetic acid  

E-Print Network (OSTI)

SPRAY-CHILLING AND CARCASS DECONTANINATION SYSTEMS USING LAC1'IC AND ACETIC ACID A Thesis by PATRICK LAWRENCE HAMBY Submitted to the Graduate College of TEXAS A&M UNIVERSITY in partial fulfillment of the requirements for the degree NASTER... OF SCIENCE December 1986 Najor Subject; Food Science and Technology SPRAY-CHILLING AND CARCASS DECONTAMINATION SYSTEMS USING LACTIC AND ACETIC ACID A Thesis by PATRICK LAWRENCE NAMBY Approved as to style and content by: H. R. Cross (Co...

Hamby, Patrick Lawrence

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Adsorptive Membranes vs. Resins for Acetic Acid Removal from Biomass Hydrolysates  

SciTech Connect

Acetic acid is a compound commonly found in hemicellulosic hydrolysates. This weak acid strongly influences the bioconversion of sugar containing hydrolysates. Previous investigators have used anion exchange resins for acetic acid removal from different hemicellulosic hydrolysates. In this study, the efficiency of an anion exchange membrane was compared to that of an anion exchange resin, for acetic acid removal from a DI water solution and an acidic hemicellulose hydrolysate pretreated using two different methods. Ion exchange membranes and resins have very different geometries. Here the performance of membranes and resins is compared using two dimensionless parameters, the relative mass throughput and chromatographic bed number. The relative mass throughput arises naturally from the Thomas solution for ion exchange. The results show that the membrane exhibit better performance in terms of capacity, and loss of the desired sugars. In addition acetic acid may be eluted at a higher concentration from the membrane thus leading to the possibility of recovery and re-use of the acetic acid.

Han, B.; Carvalho, W.; Canilha, L.; da Silva, S. S.; e Silva, J. B. A.; McMillan, J. D.; Wickramasinghe, S. R.

2006-01-01T23:59:59.000Z

22

The impact of acetate metabolism on yeast fermentative performance and wine quality: reduction of volatile acidity of grape musts and wines  

Science Journals Connector (OSTI)

Acetic acid is the main component of the volatile acidity of grape musts and wines. It can be formed as a by ... bacteria, which can metabolize residual sugars to increase volatile acidity. Acetic acid has a nega...

Alice Vilela-Moura; Dorit Schuller…

2011-01-01T23:59:59.000Z

23

Kinetics of the Electrochemically Assisted Autoxidation of Toluene in Acetic Acid  

Science Journals Connector (OSTI)

Laboratoire de Génie Chimique, UMR 5503 CNRS, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cédex 04, France ... The oxidation of toluene in acetic acid solution by dioxygen was studied at 100 and 109 °C in a classic gas?liquid reactor supplied with two electrodes of graphite. ... The average concentration of cobalt(III) acetate was higher than in absence of electric current; this led to an appreciable improvement of the kinetics of the oxidation of toluene by dioxygen. ...

Jean Lozar; Gilles Falgayrac; André Savall

2001-11-30T23:59:59.000Z

24

Microbial process for the preparation of acetic acid as well as solvent for its extraction from the fermentation broth  

DOE Patents (OSTI)

A modified water-immiscible solvent useful in the extraction of acetic acid from aqueous streams is a substantially pure mixture of isomers of highly branched di-alkyl amines. This solvent is substantially devoid of mono-alkyl amines and alcohols. Solvent mixtures formed of such a modified solvent with a desired cosolvent, preferably a low boiling hydrocarbon which forms an azeotrope with water are useful in the extraction of acetic acid from aqueous gaseous streams. An anaerobic microbial fermentation process for the production of acetic acid employs such solvents, under conditions which limit amide formation by the solvent and thus increase the efficiency of acetic acid recovery. Methods for the direct extraction of acetic acid and the extractive fermentation of acetic acid also employ the modified solvents and increase efficiency of acetic acid production. Such increases in efficiency are also obtained where the energy source for the microbial fermentation contains carbon dioxide and the method includes a carbon dioxide stripping step prior to extraction of acetic acid in solvent.

Gaddy, James L. (Fayetteville, AR); Clausen, Edgar C. (Fayetteville, AR); Ko, Ching-Whan (Fayetteville, AR); Wade, Leslie E. (Corpus Christi, TX); Wikstrom, Carl V. (Fayetteville, AR)

2002-01-01T23:59:59.000Z

25

Firmness and cell wall characteristics of pasteurized jalapeno pepper rings affected by acetic acid, calcium chloride and preheating  

E-Print Network (OSTI)

pasteurization and storage, especially when high acid brines are used. Development of treatments to retard softening may result in a higher quality product. This study was undertaken to investigate the effects of calcium chloride (CaCI2), acetic acid...

Burma, Prashanthi V

2012-06-07T23:59:59.000Z

26

Techno-economic Analysis for the Thermochemical Conversion of Lignocellulosic Biomass to Ethanol via Acetic Acid Synthesis  

SciTech Connect

Biomass is a renewable energy resource that can be converted into liquid fuel suitable for transportation applications. As a widely available biomass form, lignocellulosic biomass can have a major impact on domestic transportation fuel supplies and thus help meet the Energy Independence and Security Act renewable energy goals (U.S. Congress 2007). This study performs a techno-economic analysis of the thermo chemical conversion of biomass to ethanol, through methanol and acetic acid, followed by hydrogenation of acetic acid to ethanol. The conversion of syngas to methanol and methanol to acetic acid are well-proven technologies with high conversions and yields. This study was undertaken to determine if this highly selective route to ethanol could provide an already established economically attractive route to ethanol. The feedstock was assumed to be wood chips at 2000 metric ton/day (dry basis). Two types of gasification technologies were evaluated: an indirectly-heated gasifier and a directly-heated oxygen-blown gasifier. Process models were developed and a cost analysis was performed. The carbon monoxide used for acetic acid synthesis from methanol and the hydrogen used for hydrogenation were assumed to be purchased and not derived from the gasifier. Analysis results show that ethanol selling prices are estimated to be $2.79/gallon and $2.81/gallon for the indirectly-heated gasifier and the directly-heated gasifier systems, respectively (1stQ 2008$, 10% ROI). These costs are above the ethanol market price for during the same time period ($1.50 - $2.50/gal). The co-production of acetic acid greatly improves the process economics as shown in the figure below. Here, 20% of the acetic acid is diverted from ethanol production and assumed to be sold as a co-product at the prevailing market prices ($0.40 - $0.60/lb acetic acid), resulting in competitive ethanol production costs.

Zhu, Yunhua; Jones, Susanne B.

2009-04-01T23:59:59.000Z

27

Utilization of Vinegar for Isolation of Cellulose Producing Acetic Acid Bacteria  

SciTech Connect

Wastes of traditionally fermented Turkish vinegar were used in the isolation of cellulose producing acetic acid bacteria. Waste material was pre-enriched in Hestrin-Schramm medium and microorganisms were isolated by plating dilution series on HS agar plates The isolated strains were subjected to elaborate biochemical and physiological tests for identification. Test results were compared to those of reference strains Gluconacetobacter xylinus DSM 46604, Gluconacetobacter hansenii DSM 5602 and Gluconacetobacter liquefaciens DSM 5603. Seventeen strains, out of which only three were found to secrete the exopolysaccharide cellulose. The highest cellulose yield was recorded as 0.263+-0.02 g cellulose L{sup -1} for the strain AS14 which resembled Gluconacetobacter hansenii in terms of biochemical tests.

Aydin, Y. Andelib; Aksoy, Nuran Deveci [Chemical Engineering Department of Istanbul Technical University, Ayazaga, Maslak, Istanbul, 34469 (Turkey)

2010-06-17T23:59:59.000Z

28

Effect of oleic acid plasticizer on chitosan–lithium acetate solid polymer electrolytes  

Science Journals Connector (OSTI)

Plasticized polymer electrolytes composed of chitosan as the host polymer, oleic acid (OA) as the plasticizer and lithium acetate (LiOAc) as the doping salt were prepared by the solution cast technique. These complexes with different amounts of salts and plasticizers were investigated as possible ionic conducting polymers. The highest ionic conductivity of the plasticized chitosan–LiOAc was ?10?5 S cm?1 for the film containing 40.0 wt.% LiOAc and 10.0 wt.% of OA. Conductivity for the plasticized LiOAc-doped chitosan polymer was also studied as a function of temperature between 300 and 363 K. The plot of ln(?T) versus 103/T for each sample obeys Arrhenius rule indicating the conductivity to be thermally assisted. XRD and FTIR spectroscopy techniques have been used for the structural studies.

M.Z.A. Yahya; A.K. Arof

2003-01-01T23:59:59.000Z

29

Photochemical degradation of chlorophenol industry wastewater using peroxy acetic acid (PAA)  

Science Journals Connector (OSTI)

In this present work, photochemical degradation of industrial effluent (collected from GIDC, Surat, India) containing chlorophenols with peroxy acetic acid (PAA) was studied in a batch reactor. It was observed that degradation efficiency dependent on parameters such as UV power, pH and PAA concentration. The optimum condition of UV input, pH and PAA concentration for the treated chlorophenol industry effluent was found to be 250 W, 11 and 4053 ppm. Mineralization of effluent was determined from the chemical oxygen demand (COD) and chloride ion removal data. 97% (reduced to 2 ppm) 4-chlorophenols and 94% COD (reduced to127 ppm) was reduced by UV/PAA process. Chloride ion reduction was 81% (reduced to 340 ppm) at optimized process condition. Samples were analyzed by HPLC, UV spectrophotometer and GC–MS for residual concentration, COD and identification of final degraded products. The degraded compounds obtained were Tridecane, Hexadecane, Tetradecane, Pentadecane, 1,2,4-trimethyl Benzene and 1,3,5-trimethyl Benzene.

Dhiraj P. Daswat; Mausumi Mukhopadhyay

2012-01-01T23:59:59.000Z

30

Biodiesel production from algae cultivated in winter with artificial wastewater through pH regulation by acetic acid  

Science Journals Connector (OSTI)

Abstract Algae have been considered as a promising biodiesel feedstock. One of the major factors affecting large-scale algae technology application is poor wintering cultivation performance. In this study, an integrated approach is investigated combining freshwater microalgae Chlorella zofingiensis wintering cultivation in pilot-scale photobioreactors with artificial wastewater treatment. Mixotrophic culture with the addition of acetic acid (pH-regulation group) and autotrophic culture (control group) were designed, and the characteristics of algal growth, lipid and biodiesel production, and nitrogen and phosphate removal were examined. The results showed that, by using acetic acid three times per day to regulate pH at between 6.8 and 7.2, the total nitrogen (TN) and total phosphate (TP) removal could be increased from 45.2% to 73.5% and from 92.2% to 100%, respectively. Higher biomass productivity of 66.94 mg L?1 day?1 with specific growth rate of 0.260 day?1 was achieved in the pH-regulation group. The lipid content was much higher when using acetic acid to regulate pH, and the relative lipid productivity reached 37.48 mg L?1 day?1. The biodiesel yield in the pH-regulated group was 19.44% of dry weight, with 16–18 carbons as the most abundant composition for fatty acid methyl esters. The findings of the study prove that pH adjustment using acetic acid is efficient in cultivating C. zofingiensis in wastewater in winter for biodiesel production and nutrient reduction.

Liandong Zhu; Erkki Hiltunen; Qing Shu; Weizheng Zhou; Zhaohua Li; Zhongming Wang

2014-01-01T23:59:59.000Z

31

Comparison of energy potentials from combined ethanol and methane production using steam-pretreated corn stover impregnated with acetic acid  

Science Journals Connector (OSTI)

Abstract Acetic acid was investigated as a catalyst in steam pretreatment of corn stover. The purpose was to study ethanol production using either baker's yeast or a genetically modified pentose-fermenting version of Saccharomyces cerevisiae, KE6-12. Biogas production was investigated as an alternative for utilization of xylose. The high levels of acetic acid was found to be toxic using KE6-12. Some pentose fermentation was achieved, but the ethanol end concentration was almost the same as using baker's yeast (28 g L?1 compared to 27 g L?1). Using xylose for biogas production resulted in a high total energy recovery. The highest total energy recovery in the products, i.e. ethanol, methane and solids, obtained was 88% compared with the energy in ingoing raw material. This result was achieved when the solids and the liquid was separated after pretreatment.

Pia-Maria Bondesson; Mats Galbe; Guido Zacchi

2014-01-01T23:59:59.000Z

32

E-Print Network 3.0 - aqueous acetic acid Sample Search Results  

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

Heat at 70 C for 30'. 8. Add 100ml 5M potassium acetate, vortex 30". 9. Allow... to tube. 13. Invert to mix and spin 5' at 14K rpm. 14. Transfer ... Source: Singer, Mitchell -...

33

Preparation of vinyl acetate  

DOE Patents (OSTI)

This invention pertains to the preparation of vinyl acetate by contacting a mixture of hydrogen and ketene with a heterogeneous catalyst containing a transition metal to produce acetaldehyde, which is then reacted with ketene in the presence of an acid catalyst to produce vinyl acetate.

Tustin, Gerald Charles (Kingsport, TN); Zoeller, Joseph Robert (Kingsport, TN); Depew, Leslie Sharon (Kingsport, TN)

1998-01-01T23:59:59.000Z

34

Preparation of vinyl acetate  

DOE Patents (OSTI)

This invention pertains to the preparation of vinyl acetate by contacting a mixture of hydrogen and ketene with a heterogeneous catalyst containing a transition metal to produce acetaldehyde, which is then reacted with ketene in the presence of an acid catalyst to produce vinyl acetate.

Tustin, G.C.; Zoeller, J.R.; Depew, L.S.

1998-03-24T23:59:59.000Z

35

Design and Control of Acetic Acid Dehydration Column with p-Xylene or m-Xylene Feed Impurity. 1. Importance of Feed Tray Location on the Process Design  

Science Journals Connector (OSTI)

In the production of aromatic acids, such as terephthalic acid and isophthalic acid, tiny amounts of reactant p-xylene or m-xylene may also enter into the acetic acid dehydration column through the feed stream. ... The column total stages and the feed tray location obtained from this optimum search will be used in the second study with tiny amounts of PX or MX entering the column through the feed stream. ... The TAC formula for this case, case 2, is modified as the following equation by including an additional term to reflect the loss of HAc and IBA through the side stream. ...

Hsiao-Ping Huang; Hao-Yeh Lee; Tang-Kai Gau; I-Lung Chien

2006-12-15T23:59:59.000Z

36

Biological production of acetic acid from waste gases with Clostridium ljungdahlii  

DOE Patents (OSTI)

A method and apparatus are disclosed for converting waste gases from industrial processes such as oil refining, carbon black, coke, ammonia, and methanol production, into useful products. The method includes introducing the waste gases into a bioreactor where they are fermented to various organic acids or alcohols by anaerobic bacteria within the bioreactor. These valuable end products are then recovered, separated and purified. In an exemplary recovery process, the bioreactor raffinate is passed through an extraction chamber into which one or more non-inhibitory solvents are simultaneously introduced to extract the product. Then, the product is separated from the solvent by distillation. Gas conversion rates can be maximized by use of centrifuges, hollow fiber membranes, or other means of ultrafiltration to return entrained anaerobic bacteria from the bioreactor raffinate to the bioreactor itself, thus insuring the highest possible cell concentration. 5 figs.

Gaddy, J.L.

1998-09-15T23:59:59.000Z

37

Syntheses, crystal structure and properties of two novel coordination polymers with the flexible tetrazole-1-acetic acid (Htza)  

SciTech Connect

Two new coordination polymers, [Ag(tza)]{sub {infinity}} (1) (Htza=tetrazole-1-acetic acid) and [Cu(tza){sub 2}]{sub {infinity}} (2) have been prepared at room temperature and characterized by X-ray crystallography, IR, UV-vis, fluorescence spectra and magnetism analysis. Compound 1 exhibits extended helical chains through bridging ligand tza. The Ag{center_dot}{center_dot}{center_dot}Ag interactions between the adjacent chains form a 3-D framework featuring the extended tza-connected Ag chains that obviously affect the photoluminescent property. Compound 2 features undulated layered structure with hourglass-shaped [Cu{sub 4}(tza){sub 4}] as subunits with the weak ferromagnetic interactions between Cu(II) ions, which are further stabilized by inter-lamellar C-H{center_dot}{center_dot}{center_dot}O hydrogen bonds in the resulting 3-D supramolecular framework. - Graphical abstract: Two novel coordination polymers, [Ag(tza)]{sub {infinity}} (1) and [Cu(tza){sub 2{infinity}} (2) have been prepared and characterized. Compound 1 features extended double-stranded helical chains. Compound 2 features undulated layered structure with hourglass-shaped [Cu{sub 4}(tza){sub 4}] as subunits with the weak ferromagnetic interactions between Cu(II) ions.

Dong Wenwen; Zhao Jun [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China); Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China); Xu Li [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)], E-mail: xli@fjirsm.ac.cn

2008-05-15T23:59:59.000Z

38

Decreasing Variation in Cook Color of Ground Beef Patties Varying in Myoglobin and pH Using Acetic Acid and Hydrocolloid Solutions  

E-Print Network (OSTI)

DECREASING VARIATION IN COOK COLOR OF GROUND BEEF PATTIES VARYING IN MYOGLOBIN AND pH USING ACETIC ACID AND HYDROCOLLOID SOLUTIONS A Thesis by TERESA LYNN ALDREDGE Submitted to the Office of Graduate Studies of Texas A...&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2009 Major Subject: Food Science and Technology DECREASING VARIATION IN COOK COLOR OF GROUND BEEF PATTIES VARYING IN MYOGLOBIN AND p...

Aldredge, Teresa Lynn

2011-02-22T23:59:59.000Z

39

Structural investigation of liquid acetic acid by neutron scattering, DFT calculations and molecular dynamics simulations. Complementarity to x-ray scattering results  

Science Journals Connector (OSTI)

Abstract Neutron scattering experiments have been performed on fully deuterated liquid acetic acid (AA) at room temperature and atmospheric pressure. The scattering data are analyzed to yield the structure factor SM(Q), the molecular form factor F1(Q) and the pair correlation function g(r). To describe the intermolecular arrangement of the liquid, we have considered two dimers and two trimers, involving the isomer cis, already described in our x-ray scattering study. Neutron scattering data show that the local order of the liquid is well described by linear and ring cis trimers. Complementarity with recent x-ray results is then highlighted. Using four force fields, MD simulations show that x-ray and neutron scattering data are better reproduced by both OPLS-AA1 and OPLS-AA2 potentials.

Sonia Fathi; Salah Bouazizi; Sahbi Trabelsi; Miguel Angel Gonzalez; Mohamed Bahri; Salah Nasr; Marie-Claire Bellissent-Funel

2014-01-01T23:59:59.000Z

40

Process for the preparation of vinyl acetate  

DOE Patents (OSTI)

This invention pertains to the preparation of vinyl acetate by contacting within a contact zone a mixture of ketene and acetaldehyde with an acid catalyst at about one bar pressure and between about 85.degree. and 200.degree. C. and removing the reaction products from the contact zone.

Tustin, Gerald Charles (Kingsport, TN); Zoeller, Joseph Robert (Kingsport, TN); Depew, Leslie Sharon (Kingsport, TN)

1998-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Process for the preparation of vinyl acetate  

DOE Patents (OSTI)

This invention pertains to the preparation of vinyl acetate by contacting within a contact zone a mixture of ketene and acetaldehyde with an acid catalyst at about one bar pressure and between about 85 and 200 C and removing the reaction products from the contact zone.

Tustin, G.C.; Zoeller, J.R.; Depew, L.S.

1998-02-17T23:59:59.000Z

42

Paleotopography of glacial-age ice sheets  

SciTech Connect

This is technical comment and response to the subject of paleotophography of glacial age ice sheets. The model presented by Peltier reconstructing the paleotopography of glacial age ice sheets has implications for atmospheric general circulation models of ice age climate. In addition, the model suggests that the glacial-age Antarctic Ice Sheet was significantly larger than today`s. The commentor, Edwards, suggests there is a discrepancy between data from Papua New Guinea and the model results.

Edwards, R.L. [Univ. of Minnesota, Minneapolis, MN (United States)

1995-01-27T23:59:59.000Z

43

Application to Export Electric Energy OE Docket No. 382 Glacial...  

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

- Aug. 15, 2011 Application from Glacial Energy of Texas to export electric energy to Mexico. Federal Register Notice. EA-382 Glacial MX.pdf More Documents & Publications...

44

Glacial Energy Holdings (Connecticut) | Open Energy Information  

Open Energy Info (EERE)

Glacial Energy Holdings Place: Connecticut References: EIA Form EIA-861 Final Data File for 2010 - File220101 EIA Form 861 Data Utility Id 54871 This article is a stub. You can...

45

Conversion of carboxylate salts to carboxylic acids via reactive distillation.  

E-Print Network (OSTI)

??The purpose of this study is to convert carboxylate salts (e.g. calcium acetate, propionate, and butyrate) into carboxylic acids (e.g., acetic, propionic, and butyric acids).… (more)

Williamson, Shelly Ann

2012-01-01T23:59:59.000Z

46

Concentrating aqueous acetate solutions with tertiary amines  

E-Print Network (OSTI)

Water may be extracted from aqueous calcium acetate or sodium acetate solutions using low miscibility, low molecular weight tertiary amines, e.g. triethylamine (TEA) and N,N- dietliylmethylaniine (DEMA). This novel extraction technology...

Lee, Champion

2012-06-07T23:59:59.000Z

47

Kinetics of ethanol dehydrogenation into ethyl acetate  

Science Journals Connector (OSTI)

The kinetics of gas-phase dehydrogenation of ethanol into ethyl acetate over a copper-zinc- ... means to design a reactor for dehydrogenation of ethanol into ethyl acetate in different regimes.

V. A. Men’shchikov; L. Kh. Gol’dshtein; I. P. Semenov

2014-01-01T23:59:59.000Z

48

acid  

Office of Legacy Management (LM)

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

49

E-Print Network 3.0 - acid operational experiences Sample Search...  

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

acetic acid, propionic acid, butyric acid, valeric ... Source: Manning, Sturt - Cornell Tree-Ring Laboratory, Cornell University Collection: Environmental Sciences and Ecology 34...

50

acid  

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

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

51

Protocol for analytical ultracentrifugation sample preparation: 1. Provide partial specific volume (v-bar) of the proteins. If v-bar is not available, send complete amino acid  

E-Print Network (OSTI)

-Propanol Acetic Acid Acetone Ammonium chloride Ammonium hydroxide Ammonium sulfate Barium chloride Cadmium Guanidine hydrochloride Hydrochloric acid Inulin Lactic acid Lactose Lanthanum nitrate Lead nitrate Lithium hydrochloride Propylene glycol Silver nitrate Sodium acetate Sodium bicarbonate Sodium bromide Sodium carbonate

Chan, Hue Sun

52

Thermodynamic modeling of neptunium(V)-acetate complexation in concentrated NaCl media  

SciTech Connect

The complexation of neptunium(V), Np(V), with the acetate anion, Ac{sup -}, was measured in sodium chloride media to high concentration using an extraction technique. The data were interpreted using the thermodynamic formalism of Pitzer, which is valid to high electrolyte concentrations. A consistent model for the deprotonation constants of acetic acid in NaCl and NaClO{sub 4} media was developed. For the concentrations of acetate expected in a waste repository, only the neutral complex NpO{sub 2}Ac(aq) was important in describing the interactions between the neptunyl ion and acetate. The thermodynamic stability constant log {beta}{sup 0}{sub 101} for the reaction NpO{sub 2}{sup +} + Ac{sup -} {leftrightarrow} NpO{sub 2}Ac was calculated to be 1.46{plus_minus}0.11. This weak complexing behavior between the neptunyl ion and acetate indicates that acetate will not significantly enhance dissolved Np(V) concentrations in ground waters associated with nuclear waste repositories that may contain acetate.

Novak, C.F.; Borkowski, M.; Choppin, G.R.

1995-09-01T23:59:59.000Z

53

Hydrogen Fluoride Capture by Imidazolium Acetate Ionic Liquid  

E-Print Network (OSTI)

Extraction of hydrofluoric acid (HF) from oils is a drastically important problem in petroleum industry, since HF causes quick corrosion of pipe lines and brings severe health problems to humanity. Some ionic liquids (ILs) constitute promising scavenger agents thanks to strong binding to polar compounds and tunability. PM7-MD simulations and hybrid density functional theory are employed here to consider HF capture ability of ILs. Discussing the effects and impacts of the cation and the anion separately and together, I will evaluate performance of imidazolium acetate and outline systematic search guidelines for efficient adsorption and extraction of HF.

Chaban, Vitaly

2015-01-01T23:59:59.000Z

54

E-Print Network 3.0 - acid dicamba dicloran Sample Search Results  

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

weed control. Acetic acid (vinegar) WeedGrass Killer, Natural... weed control. Ammoniated soap of fatty acid Garden Safe Weed & Grass ... Source: Liskiewicz, Maciej -...

55

Abrupt Glacial Climate Changes due to Stochastic Resonance  

Science Journals Connector (OSTI)

Using an ocean-atmosphere climate model we demonstrate that stochastic resonance could be an important mechanism for millennial-scale climate variability during glacial times. We propose that the glacial ocean circulation, unlike today’s, was an excitable system with a stable and a weakly unstable mode of operation, and that a combination of weak periodic forcing and plausible-amplitude stochastic fluctuations of the freshwater flux into the northern North Atlantic can produce glacial warm events similar in time evolution, amplitude, spatial pattern, and interspike intervals to those found in the observed climate records.

Andrey Ganopolski and Stefan Rahmstorf

2002-01-04T23:59:59.000Z

56

Chilean glacial lake outburst flood impacts on dam construction  

E-Print Network (OSTI)

Four Glacial Lake Outburst Floods (GLOF) occurred in the Colonia Glacier (Northern Patagonia Icefield, Chile) from April 2008 to March 2009. Lago Cachet 2 emptied four times producing a maximum excess discharge in the ...

Tauro, Flavia

2009-01-01T23:59:59.000Z

57

Heterogeneous catalyst for the production of ethylidene diacetate from acetic anhydride  

DOE Patents (OSTI)

This invention relates to a process for producing ethylidene diacetate by the reaction of acetic anhydride, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled without loss in activity.

Ramprasad, Dorai (Allentown, PA); Waller, Francis Joseph (Allentown, PA)

1998-01-01T23:59:59.000Z

58

Heterogeneous catalyst for the production of ethylidene diacetate from acetic anhydride  

DOE Patents (OSTI)

This invention relates to a process for producing ethylidene diacetate by the reaction of acetic anhydride, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled without loss in activity.

Ramprasad, D.; Waller, F.J.

1998-06-16T23:59:59.000Z

59

Acetic Acid Bacteria, Newly Emerging Symbionts of Insects  

Science Journals Connector (OSTI)

...financial support the European Union in the ambit of project BIODESERT (European Communitys...Italian Ministry for Research (MIUR) in the ambit of project PRIN 2007 Caratterizzazione...agreement 203590), the International Atomic Energy Agency, and the University of Ioannina...

Elena Crotti; Aurora Rizzi; Bessem Chouaia; Irene Ricci; Guido Favia; Alberto Alma; Luciano Sacchi; Kostas Bourtzis; Mauro Mandrioli; Ameur Cherif; Claudio Bandi; Daniele Daffonchio

2010-09-17T23:59:59.000Z

60

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

DOE Patents (OSTI)

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

Moens, Luc (Lakewood, CO)

2003-06-24T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Damping of glacial-interglacial cycles from anthropogenic forcing  

E-Print Network (OSTI)

Climate variability over the past million years shows a strong glacial-interglacial cycle of ~100,000 years as a combined result of Milankovitch orbital forcing and climatic resonance. It has been suggested that anthropogenic contributions to radiative forcing may extend the length of the present interglacial, but the effects of anthropogenic forcing on the periodicity of glacial-interglacial cycles has received little attention. Here I demonstrate that moderate anthropogenic forcing can act to damp this 100,000 year cycle and reduce climate variability from orbital forcing. Future changes in solar insolation alone will continue to drive a 100,000 year climate cycle over the next million years, but the presence of anthropogenic warming can force the climate into an ice-free state that only weakly responds to orbital forcing. Sufficiently strong anthropogenic forcing that eliminates the glacial-interglacial cycle may serve as an indication of an epoch transition from the Pleistocene to the Anthropocene.

Haqq-Misra, Jacob

2014-01-01T23:59:59.000Z

62

Migration of the subtropical front as a modulator of glacial climate  

Science Journals Connector (OSTI)

... as the extent of Northern Hemisphere ice sheets, sea level and other temperature records, point towards a fluctuating severity of glacial periods, particularly during the more extreme glacial stadials ... by astronomical parameters, and . We investigate the migration of the STF in the southern Indian Ocean over multiple glacial cycles to explore whether the latitude of the STF acts as ...

Edouard Bard; Rosalind E. M. Rickaby

2009-07-16T23:59:59.000Z

63

Topographic control of asynchronous glacial advances: A case study from Annapurna, Nepal  

E-Print Network (OSTI)

Topographic control of asynchronous glacial advances: A case study from Annapurna, Nepal Beth Pratt of asynchronous glacial advances: A case study from Annapurna, Nepal, Geophys. Res. Lett., 38, L24502, doi:10 10 Be dating [Zech et al., 2009]. Further east in Nepal, other glacial dating studies [Finkel et al

Heimsath, Arjun M.

64

Carrier-mediated transport of monocarboxylic acids in BeWo cell monolayers as a model of the human trophoblast  

E-Print Network (OSTI)

The monolayer-forming, human choriocarcinoma cell line, BeWo, was used to study the mechanisms of monocarboxylic acid transport across the human trophoblast. Benzoic acid, acetic acid, and lactic acid were used as markers ...

Utoguchi, Naoki; Magnusson, Malin; Audus, Kenneth L.

1999-01-01T23:59:59.000Z

65

Highly Selective Acetate Aldol Additions Using Mesityl-Substituted Chiral  

E-Print Network (OSTI)

been reported for acetate-type aldol additions involving the use of tin,7 lithium,8 boron,9Highly Selective Acetate Aldol Additions Using Mesityl-Substituted Chiral Auxiliaries Michael T Highly diastereoselective acetate aldol additions using chlorotitanium enolates of mesityl-substituted N

66

GLOBAL GLACIAL ISOSTATIC ADJUSTMENT: TARGET FIELDS FOR SPACE GEODESY  

E-Print Network (OSTI)

GLOBAL GLACIAL ISOSTATIC ADJUSTMENT: TARGET FIELDS FOR SPACE GEODESY W.R. Peltier Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S-1A7 peltier) and Sabadini and Peltier (1981) whose analysis was based upon the application of a homogeneous viscoelastic

Peltier, W. Richard

67

The Salinity, Temperature, and O of the Glacial Deep Ocean  

E-Print Network (OSTI)

point of seawater at the ocean's surface. Our chloride data show that the glacial stratification-level change yields a value in excess of 140 meters. However, the storage of fresh water in ice shelves and, a better understanding of the deep circulation of the past requires constraints on the seawater den- sity

Schrag, Daniel

68

Identification of petroleum acids in Liaohe super-heavy oil  

Science Journals Connector (OSTI)

In this study, petroleum acids were extracted from the super-heavy oil of Liaohe oilfield, North-east China, by using acetic acid, and their structural components and properties were investigated by using FT-I...

Bencheng Wu; Jianhua Zhu

2009-12-01T23:59:59.000Z

69

Heterogeneous Reactions of Epoxides in Acidic Media  

E-Print Network (OSTI)

on sulfuric acid using Ion drift-Chemical Ionization Mass Spectrometry (ID-CIMS) showed an irreversible uptake of epoxides at room temperature resulting in the formation of less volatile products like diols, organosulfates and acetals. However, at lower...

Lal, Vinita

2012-02-14T23:59:59.000Z

70

E-Print Network 3.0 - acid ammonium phosphate Sample Search Results  

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

Corrosive - base NH4OAc Ammonium acetate Irritant PBS Phosphate buffered saline PEG Polyethylene... Calcium chloride Irritant CAPS 3-(Cyclohexylamino)-1-propanesulfonic acid...

71

Structures of cellulose acetate membranes for reverse osmosis  

Science Journals Connector (OSTI)

Studies under the scanning electron microscope have shown that the cellulose acetate membranes used for reverse osmosis are high-molecular-weight condensation structures of...

I. N. Vlodavets; G. Z. Nefedova…

1977-01-01T23:59:59.000Z

72

Synthesis and regeneration of lead (IV) acetate  

SciTech Connect

Lead acetate [Pb(O{sub 2}CMe){sub 4}] was easily synthesized from a warm solution of Pb{sub 3}O{sub 4}, HO{sub 2}CMe and O(OCMe){sub 2} following literature preparations when the appropriate measures to minimize water contamination were followed. Furthermore, Pb(O{sub 2}CMe){sub 4} which has been decomposed (evidenced by the appearance of a purple color due to oxidation) can be regenerated using a similar preparatory route. Introduction of Pb(O{sub 2}CMe){sub 4} from the two routes outlined above into the IMO process for production of PZT thin films gave films with comparable ferroelectric properties to commercially available Pb(O{sub 2}CMe){sub 4} precursors. However, the freshly synthesized material yields PZT films with better properties compared to the recycled material.

Boyle, T.J.; Al-Shareef, H.N.; Moore, G.J. [Sandia National Labs., Albuquerque, NM (United States). Advanced Materials Lab.

1996-11-01T23:59:59.000Z

73

Heterogeneous catalyst for the production of acetic anhydride from methyl acetate  

DOE Patents (OSTI)

This invention relates to a process for producing acetic anhydride by the reaction of methyl acetate, carbon monoxide, and hydrogen at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that contains an insoluble polymer having pendant quaternized phosphine groups, some of which phosphine groups are ionically bonded to anionic Group VIII metal complexes, the remainder of the phosphine groups being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for consecutive runs without loss in activity. Bifunctional catalysts for use in carbonylating dimethyl ether are also provided.

Ramprasad, D.; Waller, F.J.

1999-04-06T23:59:59.000Z

74

Heterogeneous catalyst for the production of acetic anhydride from methyl acetate  

DOE Patents (OSTI)

This invention relates to a process for producing acetic anhydride by the reaction of methyl acetate, carbon monoxide, and hydrogen at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that contains an insoluble polymer having pendant quaternized phosphine groups, some of which phosphine groups are ionically bonded to anionic Group VIII metal complexes, the remainder of the phosphine groups being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for consecutive runs without loss in activity. Bifunctional catalysts for use in carbonylating dimethyl ether are also provided.

Ramprasad, Dorai (Allentown, PA); Waller, Francis Joseph (Allentown, PA)

1999-01-01T23:59:59.000Z

75

High-Throughput Ultra-Performance LC–MS-MS Method for Analysis of Diclofenac Sodium in Rabbit Plasma  

Science Journals Connector (OSTI)

......glacial acetic) and water (pH 3.5), in a ratio...analysis was done by using a Waters Acquity H-Class UPLC-tandem...TQD was equipped with atmospheric pressure electrospray...accessories were nitrogen generator (Peak Scientific, Scotland...glacial acetic acid) and water (pH 3.5, adjusted......

Mohd Aftab Alam; Fahad I. Al-Jenoobi; Abdullah M. Al-Mohizea

2014-03-01T23:59:59.000Z

76

Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period  

E-Print Network (OSTI)

Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period R (2006), Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period histories from ice coring of Greenland and Antarctica over the period 2 to 45 ka, using SO4 anomalies

Price, P. Buford

77

Vegetation and Fire at the Last Glacial Maximum in Tropical South America  

E-Print Network (OSTI)

Chapter 4 Vegetation and Fire at the Last Glacial Maximum in Tropical South America Francis E temperatures. Keywords Charcoal · Last Glacial Maximum · pollen · Quaternary · tropical South America F-mail: Francis.Mayle@ed.ac.uk 89F. Vimeux et al. (eds.), Past Climate Variability in South America

Binford, Michael W.

78

The glacial North Atlantic Oscillation Flavio Justino and W. Richard Peltier  

E-Print Network (OSTI)

The glacial North Atlantic Oscillation Fla´vio Justino and W. Richard Peltier Department of Physics: Justino, F., and W. R. Peltier (2005), The glacial North Atlantic Oscillation, Geophys. Res. Lett., 32, L. Climate simulations [e.g., Justino et al., 2005; Peltier and Solheim, 2004; Shin et al., 2003; Hewitt et

Peltier, W. Richard

79

Features of glacial valley profiles simply explained Robert S. Anderson,1  

E-Print Network (OSTI)

. [1] Glacial occupation of alpine valleys results in a distinct signature in the long-valley profile quantitatively the long timescale pattern of valley erosion while acknowledg- ing both the variability of climateFeatures of glacial valley profiles simply explained Robert S. Anderson,1 Peter Molnar,2 and Mark A

Mojzsis, Stephen J.

80

A deeper respired carbon pool in the glacial equatorial Pacific Ocean L.I. Bradtmiller a,  

E-Print Network (OSTI)

A deeper respired carbon pool in the glacial equatorial Pacific Ocean L.I. Bradtmiller a, , R in paleoceanography. We present evidence from ten equatorial Pacific Ocean sediment cores to show that the deep Pacific Ocean likely stored more carbon during the last glacial period than the Holocene

Sachs, Julian P.

Note: This page contains sample records for the topic "glacial acetic acid" 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

Combined obliquity and precession pacing of the late Pleistocene glacial cycles  

E-Print Network (OSTI)

Combined obliquity and precession pacing of the late Pleistocene glacial cycles Peter Huybers in Earth's obliquity4,5 , or some combination of both6­11 to control the glacial cycles, though mechanisms, and this general concept has been elaborated to show how precession, obliquity, or combinations of both could

Huybers, Peter

82

Alternate fuels and chemicals from synthesis gas: Vinyl acetate monomer. Final report  

SciTech Connect

There has been a long-standing desire on the part of industry and the U.S. Department of Energy to replace the existing ethylene-based vinyl acetate monomer (VAM) process with an entirely synthesis gas-based process. Although there are a large number of process options for the conversion of synthesis gas to VAM, Eastman Chemical Company undertook an analytical approach, based on known chemical and economic principles, to reduce the potential candidate processes to a select group of eight processes. The critical technologies that would be required for these routes were: (1) the esterification of acetaldehyde (AcH) with ketene to generate VAM, (2) the hydrogenation of ketene to acetaldehyde, (3) the hydrogenation of acetic acid to acetaldehyde, and (4) the reductive carbonylation of methanol to acetaldehyde. This report describes the selection process for the candidate processes, the successful development of the key technologies, and the economic assessments for the preferred routes. In addition, improvements in the conversion of acetic anhydride and acetaldehyde to VAM are discussed. The conclusion from this study is that, with the technology developed in this study, VAM may be produced from synthesis gas, but the cost of production is about 15% higher than the conventional oxidative acetoxylation of ethylene, primarily due to higher capital associated with the synthesis gas-based processes.

Richard D. Colberg; Nick A. Collins; Edwin F. Holcombe; Gerald C. Tustin; Joseph R. Zoeller

1999-01-01T23:59:59.000Z

83

Conductivity and X-ray photoelectron studies on lithium acetate doped chitosan films  

Science Journals Connector (OSTI)

Chitosan, ethylene carbonate (EC) and lithium acetate (LiOAc) were mixed in the desired proportions and dissolved in 100 ml of 1% acetic acid solutions. The solutions were then poured into various petri dishes and left to form films at room temperature. Complexation was confirmed by X-ray photoelectron spectroscopy (XPS). The lithium signal can be deconvoluted into three gaussian component peaks. One of the peaks at ?55 eV is attributed to Li–N interaction. The nitrogen signal can be deconvoluted into two gaussian component peaks. The peak at ?403.1 eV is attributed to N–Li interaction. The electrical conductivity of all samples was calculated using the bulk resistance value obtained from the complex impedance plot in the frequency range between 1 kHz and 1 MHz. The highest electrical conductivity obtained for the film containing LiOAc is 7.6×10?6 S cm?1 at room temperature. The plot of conductivity, ? versus dopant content indicates that ? increases with increasing dopant content up to a dopant amount of 0.8 g LiOAc. The plot of ln ?T versus 103/T for each lithium acetate sample between 298 and 363 K shows beys Arrhenius behavior indicating that the conductivity occurs by way of some thermally assisted mechanism. The chitosan based samples may have potential use in replacing the liquid components of electrochromic devices.

M.Z.A. Yahya; A.K. Arof

2004-01-01T23:59:59.000Z

84

E-Print Network 3.0 - acid hydrazone dpktch Sample Search Results  

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

4865 solution of the acid 17 (250 mg, 0.79 mmol) in THF (15... (silica gel, ethyl acetate as eluant) to obtain the acid 24 (67 mg, 61%) as colorless crystals: mp 168... in the...

85

E-Print Network 3.0 - acidic particulate matter Sample Search...  

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

acetic acid, 100% solution... or bottom of the tube). 5) Add 0.5 ml cold acetone, vortex briefly. (This is to remove the acid.) 6) Spin 15 Source: Doering, Tamara - Department...

86

Recognition of micro-scale deformation structures in glacial sediments pattern perception, observer bias and the influence of experience  

E-Print Network (OSTI)

Recognition of micro-scale deformation structures in glacial sediments ­ pattern perception structures in glacial sediments ­ pattern perception, observer bias and the influence of experience. Boreas is the micromor- phology of glacial sediments. In this paper we investigate the role of an analyst's experience

Weidemann, Christoph

87

Atmospheric Pressure Photoionization Applied to Quantitation of Cyproterone Acetate in Human Plasma  

Science Journals Connector (OSTI)

......research-article Articles Atmospheric Pressure Photoionization...Acetate in Human Plasma Alberto S. Pereira...100 mg). Atmospheric pressure photoionization...acetate in human plasma. | Cyproterone...acetate in human plasma. This 513 Abstract Atmospheric Pressure Photoionization......

Alberto S. Pereira; Gustavo D. Mendes; Lina S.O.B. Oliveira; Hugo F. Valle; Gilberto De Nucci

88

Acetate retention and metabolism in the hyporheic zone of a ...  

Science Journals Connector (OSTI)

nally over much larger (meter to kilometer) scales, and discrete zones .... metering pump (Fluid Metering). The water ..... indicating no net acetate sorption by the sediments. ..... oxidation in continental margin sediments off central Chile. Limnol.

1999-08-06T23:59:59.000Z

89

Nature of Bridging Bonds in Lithium and Potassium Acetate Dimers  

Science Journals Connector (OSTI)

The structures of lithium and potassium acetates were studied by the RHF/6-31G*...3COOLi)2 and (CH3COOK)2 are electrostatic in nature. The bridging lithium bond is intermediate between hydrogen and ionic, ... of ...

I. A. Panteleev; S. G. Semenov; D. N. Glebovskii

90

Loading of emulsions stacks with aqueous solutions of lithium acetate  

Science Journals Connector (OSTI)

It has been shown that thick pellicles can be loaded with lithium acetate solutions still maintaining all the desirable geometrical ... purpose of the method, that of introducing lithium atoms in the emulsion, th...

D. H. Davis; R. Levi Setti; M. Raymund; G. Tomasini

1962-11-01T23:59:59.000Z

91

An improved lithium acetate method for yeast transformation  

Science Journals Connector (OSTI)

We have studied the effect on Saccharomyces cerevisiae...transformation frequency of varying several parameters of the lithium acetate-mediated transformation protocol first reported by Ito et al. (1983 a). We fo...

Stewart D. Finlayson; Christine Fleming; David R. Berry…

92

Microorganisms having enhanced resistance to acetate and methods of use  

SciTech Connect

The present invention provides isolated or genetically modified strains of microorganisms that display enhanced resistance to acetate as a result of increased expression of a sodium proton antiporter. The present invention also provides methods for producing such microbial strains, as well as related promoter sequences and expression vectors. Further, the present invention provides methods of producing alcohol from biomass materials by using microorganisms with enhanced resistance to acetate.

Brown, Steven D; Yang, Shihui

2014-10-21T23:59:59.000Z

93

Glacial cycles drive variations in the production of oceanic crust  

E-Print Network (OSTI)

Glacial cycles redistribute water between the oceans and continents causing pressure changes in the upper mantle, with potential consequences for melting of Earth's interior. A numerical model of mid-ocean ridge dynamics that explicitly includes melt transport is used to calculate the melting effects that would be caused by Plio-Pleistocene sea-level variations. Model results interpreted in the context of an analytical approximation predict sea-level induced variations in crustal thickness on the order of hundreds of meters. The specifics of the response depend on rates of sea-level change, mid-ocean ridge spreading rates, and mantle permeability. Spectral analysis of the bathymetry of the Australian-Antarctic ridge shows significant spectral energy near 23, 41, and 100 ky periods, consistent with model results and with the spectral content of Pleistocene sea-level variability. These results support the hypothesis that sea-floor topography records the magmatic response to changes in sea level, reinforcing the...

Crowley, John W; Huybers, Peter; Langmuir, Charles H; Park, Sung-Hyun

2014-01-01T23:59:59.000Z

95

Alternative Acetate Production Pathways in Chlamydomonas reinhardtii during Dark Anoxia and the Dominant Role of Chloroplasts in Fermentative Acetate Production  

Science Journals Connector (OSTI)

...Grossman ( arthurg@stanford.edu ), and Matthew C. Posewitz ( mposewit@mines.edu ). [W] Online version contains Web-only data. Acetate is a primary Chlamydomonas fermentative product and is linked to dark, anoxic ATP biosynthesis. Chlamydomonas...

Wenqiang Yang; Claudia Catalanotti; Sarah Dâ??Adamo; Tyler M. Wittkopp; Cheryl J. Ingram-Smith; Luke Mackinder; Tarryn E. Miller; Adam L. Heuberger; Graham Peers; Kerry S. Smith; Martin C. Jonikas; Arthur R. Grossman; Matthew C. Posewitz

2014-11-07T23:59:59.000Z

96

A long pollen record from lowland Amazonia: Forest and cooling in glacial times  

SciTech Connect

A continuous pollen history of more than 40,000 years was obtained from a lake in the lowland Amazon rain forest. Pollen spectra demonstrate that tropical rain forest occupied the region continuously and that savannas or grasslands were not present during the last glacial maximum. The data suggest that the western Amazon forest was not fragmented into refugia in glacial times and that the lowlands were not a source of dust. Glacial age forests were comparable to modern forests but also included species now restricted to higher evaluations by temperature, suggesting a cooling of the order of 5{degrees} to 6{degrees}C. 23 refs., 22 tabs.

Colinvaux, P.A.; Moreno, J.E.; Bush, M.B. [Smithsonian Tropical Research Institute, Balboa (Panama)] [and others] [Smithsonian Tropical Research Institute, Balboa (Panama); and others

1996-10-04T23:59:59.000Z

97

E-Print Network 3.0 - annually laminated late-glacial Sample...  

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

K. Magyari1,2 , J. C. Chapman1 , B. Gaydarska1 , E... and Weichselian late-glacial. Sediment chronology was determined using radiocarbon age estimates. Results Six... vegetation...

98

Climate-induced fluctuations in sea level during non-glacial times  

Science Journals Connector (OSTI)

... Volga and Turgai during Pleistocene/Holocene glacial retreat as well as receiving water from the Amu ...Darya and other drainages that should respond to expanded monsoonal precipitation24. Drainages leading to Qinghai ...

David K. Jacobs; Dork L. Sahagian

1993-02-25T23:59:59.000Z

99

Tropical climate variability from the last glacial maximum to the present  

E-Print Network (OSTI)

This thesis evaluates the nature and magnitude of tropical climate variability from the Last Glacial Maximum to the present. The temporal variability of two specific tropical climate phenomena is examined. The first is the ...

Dahl, Kristina Ariel

2005-01-01T23:59:59.000Z

100

Recent glacial recession and its impact on alpine riverflow in the Rwenzori Mountains of Uganda  

E-Print Network (OSTI)

Recent glacial recession and its impact on alpine riverflow in the Rwenzori Mountains of Uganda, Ministry of Water and Environment, P.O. Box 19, Entebbe, Uganda a r t i c l e i n f o Article history

Jones, Peter JS

Note: This page contains sample records for the topic "glacial acetic acid" 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

Atlantic Ocean circulation at the last glacial maximum : inferences from data and models  

E-Print Network (OSTI)

This thesis focuses on ocean circulation and atmospheric forcing in the Atlantic Ocean at the Last Glacial Maximum (LGM, 18-21 thousand years before present). Relative to the pre-industrial climate, LGM atmospheric CO? ...

Dail, Holly Janine

2012-01-01T23:59:59.000Z

102

Bacterial Contamination and Antibiotic Resistance in Fecal Coliforms from Glacial Water Runoff  

Science Journals Connector (OSTI)

Although, resistance against common antibiotics among the bacterial population in glacial and glacio-fluvial regions with low anthropogenic activities is very unusual, most of the E. coli...isolates from pre-Gang...

S. P. Pathak; K. Gopal

2007-08-01T23:59:59.000Z

103

Shapes and surface textures of quartz sand grains from glacial deposits: effects of source and transport  

E-Print Network (OSTI)

for the degree MASTER OF SCIENCE December 1987 Major Subject: Geology SHAPES AND SURFACE TERTURES OF QUARTZ SAND GRAINS FROM GLACIAL DEPOSITS: EFFECTS OF SOURCE AND TRANSPORT A Thesis by CHRISTINE RITTER Approved as to style and content by; James zzullo... (Chairman of Committee) Thomas T. Tieh (Member) Louis E. Garrison (Member) Gail M. Ashley (Member) ohn H. Spa (He d of Department) December 1987 ABSTRACT Shapes and Surface Textures of Quartz Sand Grains From Glacial Deposits: Effects of Source...

Ritter, Christine

2012-06-07T23:59:59.000Z

104

Concentrating aqueous volatile fatty acid salt solutions using a tertiary amine mixture  

E-Print Network (OSTI)

, and that reaction is difficult to reverse (Streitwieser and Heathcock, 1976; King and Poole, 1994). Tertiary amines (R, N) do not form amides but generally give lower K, values than secondary amines. For the extraction of undissociated carboxylic acids, aliphatic... by acidifying with carbon dioxide under pressure in the presence of a suitable solvent (Busche, 1988). Gregor has used electrodialysis to recover acetic acid from dilute (1-5 wt%) acetate solutions. With newer membranes, acid concentrations up to 30% were...

Gaskin, David J

1997-01-01T23:59:59.000Z

105

Acid-catalytic decomposition of peracetic acid in the liquid phase  

SciTech Connect

This paper elucidates the kinetic relationships of peracetic acid (PAA) decomposition in the presence of mineral acids and their heterogeneous analogs, polystyrene-di-vinylbenzene cation-exchangers, differing in physicochemical and morphological parameters. It is shown that the thermal decomposition of PAA in acetic acid is an acid-catalyzed reaction. The controlling step of the reaction is protonation of the substrate with formation of an active intermediate form. Sulfonated cation-exchangers are twice as effective as sulfuric acid in this process. Polystyrene-divinylbenzene sulfonated cation-exchangers can be used with success as acid catalysts in oxidation processes involving PAA, because of their high effectiveness, stability, and availability.

Kharchuk, V.G.; Kolenko, I.P.; Petrov, L.A.

1985-12-01T23:59:59.000Z

106

Biogas Production through the Syntrophic Acetate-Oxidising Pathway  

E-Print Network (OSTI)

Biogas Production through the Syntrophic Acetate-Oxidising Pathway Characterisation and Detection Uppsala 2012 #12;Acta Universitatis agriculturae Sueciae 2012:45 #12;Biogas production through 1.1 Aims of the thesis 12 2 Biogas production 15 2.1 Biogas production in Europe 16 2.2 Substrate

107

Electronic interactions between gold films and mn12-acetate  

E-Print Network (OSTI)

the presence of a surface layer of Mn12–acetate, have been performed using a dilution refrigerator. Quantitative fits to the data using the predictions of weak localization theory were performed using a least-squares fit method in order to determine...

Means, Joel Lewis

2009-05-15T23:59:59.000Z

108

Synthesis of vinyl acetate on palladium-based catalysts  

E-Print Network (OSTI)

Vinyl acetate (VA) is an important monomer used in the production of paints, surface coatings and adhesives. Synthesis of VA is usually carried out over supported Pd alloy catalysts with a selectivity as high as 96% and described as C2H4 + CH3COOH...

Kumar, Dheeraj

2009-06-02T23:59:59.000Z

109

Analysis of Fatty Acid and Alcoholic Components of Sebaceous Lipid Types  

Science Journals Connector (OSTI)

......chromatography of the acetates. Ratios were determined...specificity for the synthesis of alcohols. Introduction...and Alcohols For the synthesis of cyclopropanoid acids...the methyl esters with lithium aluminum hydride. The...anhydride and the respective acetates together with the methyl......

Hugh J. O'Neill; Leon L. Gershbein

1976-01-01T23:59:59.000Z

110

A fivefold inter­penetrating diamond­oid three-dimensional metal-organic framework constructed from benzene-1,4-di­acetic acid and flexible triazole derivatives: poly[[(2-benzene-1,4-di­acetato-2O:O){2-1,4-bis­[(1H-1,2,4-triazol-1-yl)methyl]benzene-2N4:N4'}zinc(II)] monohydrate  

Science Journals Connector (OSTI)

The title compound has a fivefold inter­penetrating diamondoid three-dimensional metal-organic framework, with each ZnII centre surrounded by two O-donor atoms from monodentate carboxyl­ate groups belonging to two different benzene-1,4-di­acetate ligands and by two triazole N-donor atoms from two different 1,4-bis­[(1H-1,2,4-triazol-1-yl)methyl]benzene ligands.

Shen, H.

2013-12-14T23:59:59.000Z

111

Mn12-acetate thin film patterns and their interaction with superconductors  

E-Print Network (OSTI)

Mn12-acetate single-molecule magnets (SMMs) are nano-scale magnets showing a strong magnetic anisotropy, slow relaxation and stepwise magnetic hysteresis curves. Possible applications of Mn12-acetate, e.g. for ultra high density magnetic information...

Kim, Kyongwan

2009-05-15T23:59:59.000Z

112

Cyclic chronopotentiometric studies of the LiAl anode in methyl acetate  

Science Journals Connector (OSTI)

The applicability of methyl acetate as a solvent for ambient temperature lithium secondary batteries was investigated using cyclic chronopotentiometry. Methyl acetate was found to be stable towards lithium-alumin...

Y. S. Fung; H. C. Lai

1989-03-01T23:59:59.000Z

113

E-Print Network 3.0 - alcohol acetates isoamyl Sample Search...  

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

2-PROPANOL 12;... ) 50ml Guanidinium Stock 5. 2 M SODIUM ACETATE PH4 a) 50ml Falcon Tube b) 13.61g Sodium Acetate c) QS Source: Iruela-Arispe, Luisa - Department of Molecular,...

114

Glacial erosion of bedrock and preliminary Quaternary stratigraphy in the western Lake Erie coastal region  

SciTech Connect

An analysis of 120 km of high-resolution seismic reflection profiles and onshore well records in the southwestern Lake Erie coastal zone shows a highly dissected bedrock surface. Regional subsurface data confirm extensive glacial modification of the preglacial landscape and the differential erosion of bedrock units. Areas of deep glacial scour coincide with shale and dolostone subcrop belts, in which bedrock strike direction was subparallel to glacial flow directions during early and late phases of glaciation. Locally, deep scouring also occurred over zones of fractured bedrock. In southeastern Michigan, large bedrock valleys, widened and deepened by glacial erosion, are preserved on the north side of the area of the Erie ice lobe. To the south in areas of axial flow of the Erie lobe and southerly ice flow during glacial maxima, traces of preglacial valleys have been more severely modified by glacial erosion in diverging directions. Striations in the region record three such diverging ice-flow directions of the last ice sheet. In one quarry, the position and cross-cutting erosional relationships of the three striation sets indicate their relative ages, from oldest to youngest: SSW, SW, and W. The SSW-trending set is overlain by a compact, loamy till containing abundant Canadian-shield crystalline gravel clasts. The till and the striations record the initial Late Wisconsinan ice advance into the region. The younger striation sets are overlain by the clayey, shale-rich till of the Erie lobe. Onshore, glaciolacustrine massive silty clay overlies the clayey till and fills broad troughs between areas of till at the surface. Offshore, seismic profiles reveal stratification in the clay, which is overlain by late Holocene mud. A nearby test hole through the beach west of Turtle Creek suggests a valley-fill sequence consisting of Late Wisconsinan till overlain by 5 m of organic mud deposited during the late Holocene transgression of Late Erie.

Shideler, G.I. (Geological Survey, Denver, CO (United States)); Stone, B.D. (Geological Survey, Reston, VA (United States))

1994-04-01T23:59:59.000Z

115

Effect of Ethanol, Acetate, and Phenol on Toluene Degradation Activity and todlux  

E-Print Network (OSTI)

Effect of Ethanol, Acetate, and Phenol on Toluene Degradation Activity and tod­lux Expression with increasing influent concentrations of ethanol, acetate, or phenol. Three inhibitory mechanisms were) by acetate and ethanol, which was quantified by a decrease in specific bioluminescence; (2) competitive

Alvarez, Pedro J.

116

Late Pleistocene glacial and lake history of northwestern Russia EILIV LARSEN, KURT H. KJR, IGOR N. DEMIDOV, SVEND FUNDER, KARI GRSFJELD, MICHAEL  

E-Print Network (OSTI)

U N C O R R EC TED PR O O F Late Pleistocene glacial and lake history of northwestern Russia EILIV glacial and lake history of northwestern Russia. Boreas, Vol. 35, pp. xxÁ xx. Oslo. ISSN 0300-9483. Five conditions, are described from northwestern Russia. The first glacial event took place in the Early

Ingólfsson, �lafur

117

Intramolecular cationic [5 + 2] cycloaddition reactions promoted by trimethylsilyl triflate in 3.0 M lithium perchlorate-ethyl acetate: Application to a formal total synthesis of (±)-isocomene  

Science Journals Connector (OSTI)

Trimethylsilyl triflate is an effective reagent in 3.0 M lithium perchlorate-ethyl acetate for promoting intramolecular cationic [5 + 2] cycloaddition reactions. A formal total synthesis of the angular triquinane isocomene (10) is detailed. Cationic [5 + 2] cycloaddition of quinone monoketal 40 gives rise to tricyclic diketone 35 which is subsequently converted into the known tricyclic ketone 33. Addition of methyl lithium followed by acid-catalyzed rearrangement employing the Pirrung protocol affords (±)-isocomene (10).

Paul A. Grieco; John K. Walker

1997-01-01T23:59:59.000Z

118

Freshwater Discharge, Sediment Transport, and Modeled Climate Impacts of the Final Drainage of Glacial Lake Agassiz  

E-Print Network (OSTI)

A cold event at around 8200 calendar years BP and the release, at around that time, of a huge freshwater outburst from ice-dammed glacial Lake Agassiz have lent support to the idea that the flood triggered the cold event. ...

Bush, John W. M.

119

Late-Glacial Deposits on the Chalk of South-East England  

Science Journals Connector (OSTI)

...Folkestone and the Medway Valley, that the climate of...widely, most notably the West European and Alpine snail...open sea to the south-west, the climate of zone...zone I b) of north-west Europe. The Late-glacial...fine-grained rubble found in dry valleys in the Cretaceous Chalk...

1963-01-01T23:59:59.000Z

120

PLANKTONIC FORAMINIFERAL VARIATIONS IN THE SOUTHWESTERN ATLANTIC SINCE THE LAST GLACIAL–INTERGLACIAL CYCLE  

Science Journals Connector (OSTI)

...SOUTHWESTERN ATLANTIC SINCE THE LAST GLACIAL-INTERGLACIAL CYCLE RODRIGO DA COSTA PORTILHO-RAMOS 1 CaTIA FERNANDES BARBOSA 1 ARISToTELES...Caracterizacao bioestratigrafica do Neogeno Superior da Bacia de Santos com base em foraminiferos planctonicos: Revista Brasileira...

RODRIGO DA COSTA PORTILHO-RAMOS; CÁTIA FERNANDES BARBOSA; ARISTÓTELES MORAES RIOS-NETTO

Note: This page contains sample records for the topic "glacial acetic acid" 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

A ~200 ka Pollen record from Okinawa Trough: paleoenvironment reconstruction of glacial-interglacial cycles  

E-Print Network (OSTI)

5 Universit de Perpignan Via Domitia, 66860 Perpignan, France 6 Laboratoire des Sciences du Climat that the percentage of Cyperaceae was extremely abundant in the glacial stages with the notably increasing of solar radiation and monsoonal hal-00929941,version1-17Jan2014 Author manuscript, published in "Science

122

Influence of present day and glacial surface conditions on the Antarctic Oscillation/Southern Annular Mode  

E-Print Network (OSTI)

/Southern Annular Mode Fla´vio Justino1,2 and W. Richard Peltier1 Received 23 May 2006; revised 5 October 2006., and W. R. Peltier (2006), Influence of present day and glacial surface conditions on the Antarctic around the Antarctic Peninsula [e.g., Peltier and Solheim, 2004], it might be expected that significantly

Peltier, W. Richard

123

Megatides in the Arctic Ocean under glacial conditions Stephen D. Griffiths,1  

E-Print Network (OSTI)

Megatides in the Arctic Ocean under glacial conditions Stephen D. Griffiths,1 and W. R. Peltier1's climate and ocean circulation. Citation: Griffiths, S. D., and W. R. Peltier (2008), Megatides occurred approx- imately 26,000 years ago, since the bathymetric changes are now well constrained [Peltier

Peltier, W. Richard

124

The role of sea ice in the temperature-precipitation feedback of glacial cycles  

E-Print Network (OSTI)

precipitation over the ice sheets. The insulating effect of the sea ice on the hydrological cycle is foundThe role of sea ice in the temperature-precipitation feedback of glacial cycles Hezi Gildor · Yosef climate history can shed some light. Sea ice is a key player in the climate system and in the hydrological

Tziperman, Eli

125

The role of sea ice in the temperature-precipitation feedback of glacial cycles  

E-Print Network (OSTI)

to an increase in snow precipitation over the ice sheets. The insulating effect of the sea iceThe role of sea ice in the temperature-precipitation feedback of glacial cycles Hezi Gildor · Yosef unsatisfactory, yet upon which past climate history can shed some light. Sea ice is a key player in the climate

Tziperman, Eli

126

Detecting sub-glacial aquifers in the north polar layered deposits with Mars Express/MARSIS  

E-Print Network (OSTI)

water ice cap and underlying dusty-ice polar layered deposits or PLD) via melting from ice insulation into the polar ice mass is modeled to determine the capability of the instrument to locate sub-glacial aquifers will investigate the effect of ice reflective and conductive losses on the radar-detection of subsurface aquifers

Gurnett, Donald A.

127

Linear weakening of the AMOC in response to receding glacial ice sheets in CCSM3  

E-Print Network (OSTI)

North Atlantic; this expanded sea ice insulates the ocean from heat loss and leads to suppressed deepLinear weakening of the AMOC in response to receding glacial ice sheets in CCSM3 Jiang Zhu1 The transient response of the Atlantic Meridional Overturning Circulation (AMOC) to a deglacial ice sheet

Eisenman, Ian

128

Rapid sea level rise along the Antarctic margins driven by increased glacial1 Supplementary material4  

E-Print Network (OSTI)

Rapid sea level rise along the Antarctic margins driven by increased glacial1 discharge2 3 of the signal of anomalously rapid sea level rise in the41 Antarctic subpolar seas at the core of this study.42, the Antarctic coastal sea level rise signal is significantly different from47 zero with 95% confidence

Naveira Garabato, Alberto

129

Temperature profile for glacial ice at the South Pole: Implications for life nearby subglacial lake  

E-Print Network (OSTI)

Temperature profile for glacial ice at the South Pole: Implications for life nearby subglacial lake deep of South of #9°C, which is 7°C below pressure­induced melting temperature freshwater produce contamination Lake Vostok. semiempirical expression strain vs. stress, estimate shear depth show Ice

Woschnagg, Kurt

130

Eos,Vol. 86, No. 9, 1 March 2005 investigation of the ancient climate and glacial  

E-Print Network (OSTI)

,ionosphere, and magnetosphere.The program will study how energy is transferred from the solar wind into the geospace environmentEos,Vol. 86, No. 9, 1 March 2005 investigation of the ancient climate and glacial history,that part of outer space where the solar wind interacts with the Earth's outer atmosphere

ten Brink, Uri S.

131

EVALUATION OF POTENTIAL ELUANTS FOR NON-ACID ELUTION OF CESIUM FROM RESORCINOL-FORMALDEHYDE RESIN  

SciTech Connect

Small-column ion exchange (SCIX) units installed in high-level waste tanks to remove Cs-137 from highly alkaline salt solutions are among the waste treatment plans in the DOE-complex. Spherical Resorcinol-Formaldehyde (sRF) is the ion exchange resin selected for use in the Hanford Waste Treatment and Immobilization Plant (WTP). It is also the primary ion exchange material under consideration for SCIX at the Hanford site. The elution step of the multi-step ion exchange process is typically done with 0.5 M nitric acid. An acid eluant is a potential hazard in the event of a spill, leak, etc. because the high-level waste tanks are made of carbon steel. Corrosion and associated structural damage may ensue. A study has been conducted to explore non-acid elution as an alternative. Batch contact sorption equilibrium screening tests have been conducted with 36 potential non-acid eluants. The sorption tests involve equilibrating each cesium-containing eluant solution with the sRF resin for 48 hours at 25 C in a shaker oven. In the sorption tests, an eluant is deemed to have a high cesium elution potential if it minimizes cesium sorption onto the sRF resin. The top candidates (based on lowest cesium sorption distribution coefficients) include ammonium carbonate, ammonium carbonate/ammonium hydroxide, ammonium bicarbonate, rubidium carbonate, ammonium acetate, ammonium acetate/ammonium hydroxide, ammonium bicarbonate/ammonium hydroxide, calcium chloride, and magnesium chloride. A select few of the top candidate eluants from the screening tests were subjected to actual sorption (loading) and elution tests to confirm their elution ability. The actual sorption (loading) and elution tests mimicked the typical sRF-cesium ion exchange process (i.e., sorption or loading, caustic wash, water rinse, and elution) via batch contact sorption and quasi column caustic wash/water rinse/elution. The eluants tested included ammonium carbonate, ammonium acetate, calcium acetate, magnesium acetate, and nitric acid. Calcium acetate and magnesium acetate were substitutes for calcium chloride and magnesium chloride respectively due to corrosion concerns. Nitric acid was selected for benchmarking since it is the baseline cesium eluant for sRF resin. The cesium elution performance of ammonium carbonate and ammonium acetate was approximately the same as the benchmark eluant, nitric acid. Ninety-seven (97), 94, and 100% percent of the cesium sorbed or loaded were eluted by ammonium carbonate, ammonium acetate, and nitric acid was respectively. The performance of calcium acetate and magnesium acetate, on the other hand, was mediocre. Percent elution was 16 and 8 respectively.

Adu-Wusu, K.; Pennebaker, F.

2010-12-22T23:59:59.000Z

132

A loesspaleosol record of climate and glacial history over the past two glacialinterglacial cycles (~150 ka), southern Jackson Hole, Wyoming  

E-Print Network (OSTI)

terrestrial records of glacial­interglacial cycles of the Quaternary Period (Porter, 2001; Muhs and Bettis of the Laurentide ice sheet (Bettis et al., 2003). In the Great Plains, west of the Mississippi River Valley, loess

Licciardi, Joseph M.

133

Glacial Cooling in the Tropics: Exploring the Roles of Tropospheric Water Vapor, Surface Wind Speed, and Boundary Layer Processes  

Science Journals Connector (OSTI)

This paper is a modeling study of possible roles for tropospheric water vapor, surface wind speed, and boundary layer processes in glacial cooling in the Tropics. The authors divide the Tropics into a region of persistent deep convection and a ...

Richard Seager; Amy C. Clement; Mark A. Cane

2000-07-01T23:59:59.000Z

134

Effects of Exogenously Applied Indole-3-Acetic Acid (IAA) to Cotton  

E-Print Network (OSTI)

micronaire, fiber length, length uniformity, fiber strength and elongation. Statistical analysis was done using SAS 9.2 with a mixed model and means were separated with Fisher LSD at a 95% confidence interval. Results and Discussion There were...

Clement, Jenny D.

2011-08-08T23:59:59.000Z

135

Inhibition of Methanogenesis from Acetate in Granular Sludge by Long-Chain Fatty Acids  

Science Journals Connector (OSTI)

...30), palm oil processing effluents (26), and wool scouring wastes (10). Research by Hanaki et al. (14) showed...and M. Percivale. 1984. Anaerobic diges- tion of wool scouring wastes, p. 95-101. In Proceedings of the Third...

Iman W. Koster; Albertus Cramer

1987-02-01T23:59:59.000Z

136

Inhibition of Methanogenesis from Acetate in Granular Sludge by Long-Chain Fatty Acids  

Science Journals Connector (OSTI)

...processing effluents (26), and wool scouring wastes (10). Research...lites will accumulate in the digester environment, possibly resulting...37), whereas in anaerobic digesters treating complex wastes, approximately...Anaerobic diges- tion of wool scouring wastes, p. 95-101...

Iman W. Koster; Albertus Cramer

1987-02-01T23:59:59.000Z

137

Enhancing the Efficacy of Photodynamic Cancer Therapy by Radicals from Plant Auxin (Indole-3-Acetic Acid)  

Science Journals Connector (OSTI)

...the major veins and arteries of the ear microcirculation were visualized using transillumination with a 520-nm light emitting diode, and an artery 40 mum in diameter was selected for data acquisition. Light from a HeNe laser was shaped into...

Lisa K. Folkes and Peter Wardman

2003-02-15T23:59:59.000Z

138

Phase Behavior and Characterization of the System Acetic Acid?Dodecylamine?Water  

Science Journals Connector (OSTI)

Furthermore, a characterization of the different phases present in the system was considered important, especially the water-rich region of the isotropic solution region, to verify whether these systems form micelles or not. ... The small-angle X-ray scattering (SAXS) measurements were carried out at 298.2 ± 0.5 K with an integrated camera system equipped with Kratky slit collimation and a linear, position-sensitive detector. ...

S. Karlsson; R. Friman; M. Björkqvist; B. Lindström; S. Backlund

2001-05-11T23:59:59.000Z

139

Crystal Structure of an Indole-3-Acetic Acid Amido Synthetase from Grapevine Involved in Auxin Homeostasis  

Science Journals Connector (OSTI)

...Similarly, IAA-Asp is thought to increase pathogen resistance in rice...berries both delays ripening and increases the synchronicity of sugar accumulation. Aust. J. Grape Wine Res. 17 : 1-8. Bottcher...efficient generation of high-quality atomic charges. AM1-BCC...

Thomas S. Peat; Christine Böttcher; Janet Newman; Del Lucent; Nathan Cowieson; Christopher Davies

2012-11-06T23:59:59.000Z

140

Physiology and Genetics of Biogenic Methane-Production from Acetate  

SciTech Connect

Biomass conversion catalyzed by methanogenic consortia is a widely available, renewable resource for both energy production and waste treatment. The efficiency of this process is directly dependent upon the interaction of three metabolically distinct groups of microorganisms; the fermentative and acetogenic Bacteria and the methanogenic Archaea. One of the rate limiting steps in the degradation of soluble organic matter is the dismutation of acetate, a predominant intermediate in the process, which accounts for 70 % or more of the methane produced by the methanogens. Acetate utilization is controlled by regulation of expression of carbon monoxide dehydrogensase (COdh), which catalyzes the dismutation of acetate. However, physiological and molecular factors that control differential substrate utilization have not been identified in these Archaea. Our laboratory has identified sequence elements near the promoter of the gene (cdh) encoding for COdh and we have confirmed that these sequences have a role in the in vivo expression of cdh. The current proposal focuses on identifying the regulatory components that interact with DNA and RNA elements, and identifying the mechanisms used to control cdh expression. We will determine whether expression is controlled at the level of transcription or if it is mediated by coordinate interaction of transcription initiation with other processes such as transcription elongation rate and differential mRNA stability. Utilizing recently sequenced methanosarcinal genomes and a DNA microarray currently under development genes that encode regulatory proteins and transcription factors will be identified and function confirmed by gene disruption and subsequent screening on different substrates. Functional interactions will be determined in vivo by assaying the effects of gene dosage and site-directed mutagenesis of the regulatory gene on the expression of a cdhAÂ?::lacZ operon fusion. Results of this study will reveal whether this critical catabolic pathway is controlled by mechanisms similar to those employed by the Bacteria and Eukarya, or by a regulatory paradigm that is unique to the Archaea. The mechanism(s) revealed by this investigation will provide insight into the regulatory strategies employed by the aceticlastic methanogenic Archaea to efficiently direct carbon and electron flow in anaerobic consortia during fermentative processes.

Sowers, Kevin R

2013-04-04T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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 - acetals Sample Search Results  

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

the nanocomposite... the metal acetates are an excellent source of metal and metal oxide additives in a flame reactor. The metal Source: Wooldridge, Margaret S. - Departments of...

142

E-Print Network 3.0 - acetal Sample Search Results  

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

the nanocomposite... the metal acetates are an excellent source of metal and metal oxide additives in a flame reactor. The metal Source: Wooldridge, Margaret S. - Departments of...

143

E-Print Network 3.0 - acetates Sample Search Results  

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

the nanocomposite... the metal acetates are an excellent source of metal and metal oxide additives in a flame reactor. The metal Source: Wooldridge, Margaret S. - Departments of...

144

E-Print Network 3.0 - acetate-utilizing methanogens immobilized...  

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

of his laboratory have been the characterization of enzymes from acetate-utilizing... , Germany Methanogenic archaea and the elucidation of the RPG effect James Ferry,...

145

E-Print Network 3.0 - acetate transfer influences Sample Search...  

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

the proposed mechanism. Replacement of E385 influenced the Km values for acetate and ATP with only... indicates that neither residue is essential for catalysis or significantly...

146

E-Print Network 3.0 - acetate-oxidizing obligate microaerophile...  

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

organisms recovered were in the family Geobacteraceae. MATERIALS... acceptor. Acetate oxidation was monitored by measuring the production of ... Source: Lovley, Derek - Department...

147

Pressure dependence of tunneling and librational modes of coupled methyl groups in lithium acetate  

Science Journals Connector (OSTI)

The pressure dependence of the tunneling and librational modes of the coupled methyl groups in lithium acetate dihydrate was studied by inelastic neutron scattering...

A. Heidemann; J. Eckert; L. Passell…

1987-01-01T23:59:59.000Z

148

Isobaric vapor–liquid equilibria of binary system ethyl acetate + ethyl benzene + lithium bromide  

Science Journals Connector (OSTI)

Lithium bromide salt (99.9 wt% purity) ... . The salt studied was dissolved in ethyl acetate as a solvent to the saturated level...

Zaid Ahmed Al-Anber; Munther Issa Kandah…

2013-05-01T23:59:59.000Z

149

Tunneling of coupled methyl groups in lithium acetate: The isotope effect  

Science Journals Connector (OSTI)

We studied by high resolution inelastic neutron scattering the isotope effect of tunneling of coupled methyl groups in lithium acetate dihydrate (LIAC). Fully protonated, fully...

A. Heidemann; H. Friedrich; E. Günther…

1989-01-01T23:59:59.000Z

150

E-Print Network 3.0 - acetate loaded palm Sample Search Results  

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

Kirsty Salmon, Tomas Rejtar... Methanosarcina acetivorans strain C2A is an acetate- and methanol-utilizing methane-producing organism for which... ion trap-FTICR mass...

151

E-Print Network 3.0 - acetate pma-stimulated neutrophils Sample...  

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

ERK activation in eosinophils (Figure 4, lane 7... myristate acetate (PMA). Protease inhibitor tablets (Complete) were obtained from Boehringer Mannheim... shock, the...

152

E-Print Network 3.0 - acetate teratology studies Sample Search...  

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

in uranyl acetate... in triplicate. RESULTS AND DISCUSSION Known Teratology of Dioxins--Halogenated dioxins, such as 2 Source: Bradfield, Christopher A. - McArdle...

153

Effect of altered boundary conditions on GCM studies of the climate of the last glacial maximum  

SciTech Connect

The authors address a problem discovered recently with global climate model results for the last glacial maximum. Bard, et. al. pointed out a mismatch in boundary conditions entered into the model. Ice sheet conditions were derived from CLIMAP based on a time 18000 radiocarbon years ago. It was assumed that radiocarbon and sidereal dates coincide. However it was recently shown that the sidereal data of the last glacial maximum is nearer 21kbp. The authors perform model calculations to attempt to evaluate the seriousness of this mismatch in terms of calculated results from the global climate model runs for the last glacial maximum. The authors find that one result of the timing mismatch is a sizable difference in northern hemisphere summer and Eurasian winter climates. These changes should have a major impact on circulation patterns in the GCM simulations. In addition new ice sheet model programs are available now which appear to improve on CLIMAP models. The authors urge that these GCM simulations be rerun.

Hyde, W.T.; Peltier, W.R.

1993-05-21T23:59:59.000Z

154

Communications J,Org. Chem., Vol.40, No. 14, 1975 2141 for 7 hr led quantitatively to a mixture of the pseudo-acid  

E-Print Network (OSTI)

, and the resulting amide mixture was cyclized using as medium 10% sodium acetate-acetic acid for 20 hr at 25'. After of 12a was removed by reaction with lithium mercaptide in HMPAZ2yielding 90% of 20(S)-camptothec- in (12

Keinan, Ehud

155

Antibacterial action of 2-bromo-2-nitropropane-1,3-diol (bronopol).  

Science Journals Connector (OSTI)

...butan-l-ol-glacial acetic acid- water (60:15:25). Plates...measured immediately after recovery from this bacteriostasis...cystine to pyruvic acid and the condensation of pyruvic acid with a molecule...Thiazolidine formation by condensation of pyruvic acid and cysteine...

J A Shepherd; R D Waigh; P Gilbert

1988-11-01T23:59:59.000Z

156

Arachidonic Acid Accumulation and Delta-5 Desaturation in Felines After Feeding a Gamma-Linolenic Acid Enriched Diet  

E-Print Network (OSTI)

animals possess the same requirements [1]. Mammals, including cats, and most ruminants, possess the ability to synthesize both nonessential saturated and monounsaturated fatty acids (MUFA) de novo from amino acids or glucose via acetyl CoA [2... collected at d0, d140, and d300 were all utilized in preparing FAMEs for analysis. Five hundred ?L of each sample were transferred into 12 mL Teflon-lined screw topped tubes along with 9 mL of chloroform:methanol (2:1, v/v) containing 0.2% glacial...

Chamberlin, Amy Jo

2011-02-22T23:59:59.000Z

157

Copolymerization Studies of Vinyl Chloride and Vinyl Acetate with Ethylene Using a Transition-Metal Catalyst  

E-Print Network (OSTI)

monomers with polar functionality (such as vinyl acetate (VA), vinyl chloride (VC), and acrylates).1 OverCopolymerization Studies of Vinyl Chloride and Vinyl Acetate with Ethylene Using a Transition-Flory constants were identical (0.81) for the ethylene homopolymerizations and the ethylene/vinyl chloride

Goddard III, William A.

158

Precipitation over South America during the Last Glacial Maximum: An analysis of the "amount effect" with a water isotope-enabled general circulation model  

E-Print Network (OSTI)

Precipitation over South America during the Last GlacialPrecipitation over South America during the Last Glacialand subtropical regions of South America also suggest

Lee, Jung-Eun; Johnson, Kathleen; Fung, Inez

2009-01-01T23:59:59.000Z

159

Environmental actions of agrochemicals 2. Histological effects of the herbicide/insecticide dinoseb-acetate (2-sec-butyl-4,6-dinitrophenyl acetate) on the spider miteTetranychus urticae (Acari: Tetranychidae) reared on herbicidetreatedPhaseolus vulgaris  

Science Journals Connector (OSTI)

The pure herbicidal compound dinoseb-acetate (2-sec-butyl-4,6-dinitrophenyl acetate) and its commercial formulation Aretit® were tested for their effects on the spider miteTetranychus urticae L. (Acari, Tetranych...

Ursula Mothes-Wagner; Harald K. Reitze…

1990-10-01T23:59:59.000Z

160

THE ENZYMATIC SYNTHESIS IN VITRO OF HYALURONIC ACID CHAINS  

Science Journals Connector (OSTI)

...the sample is lost. Electrodialysis for 48 hours at 800...the C'4-HA from water alone leads to a considerable...butanol-acetic acid- water solvent, one strip...of the digested HA. Water eluates were made separately...cross-linked. The Dowex treatment was done twice with...

Luis Glaser; David H. Brown

1955-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

E-Print Network 3.0 - aminoethanesulfonic acid Sample Search...  

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

methyl-2- aminoethane-sulfonic acid, 8 trehalose, 10 glucose, 26 NaHCO3, 1 NaH2PO4, 1.5 CaCl2, and 4 Mg... 0 100 150 0 10 20 Benzaldehyde 1-butanol Butyric acid Ethyl acetate...

162

Studies on lithium acetate doped chitosan conducting polymer system  

Science Journals Connector (OSTI)

The structure of chitosan contains the amine group that can act as electron donors. Complexation between chitosan and the salt can be proven by infrared and X-ray photoelectron spectroscopy methods. The NH2, NH3+ and O?C-NHR vibrations which can be observed at 1590, 1560 and 1650 cm?1 shift to lower wave numbers when the complexes are formed. The after deconvolution Li 1s core level spectrum of the chitosan–salt complexes can contain several gaussian components one of which has a binding energy peak at 55.2 eV which signifies Li–N interaction. The component that peaks at ?403 eV in the N 1s core level spectrum complements the proof of N–Li interaction. The highest conductivity achieved for a plasticized chitosan–salt complex is of the order 10?6 S/cm using lithium acetate as the doping salt. Transference number studies prove that this material is ionic conductor and from transient ionic current studies that mobility of the ions is of the order of 10?4 cm2/V s.

M.Z.A. Yahya; A.K. Arof

2002-01-01T23:59:59.000Z

163

Studies on rejuvenation of spent residue hydroprocessing catalysts by leaching of foulant metals: influence of inorganic salt additives on the leaching efficiency of organic acids  

Science Journals Connector (OSTI)

A comparative study has been made on the efficiency of oxalic, malonic and acetic acids for selective removal of metal foulants (e.g. vanadium) from spent residue hydrotreating catalysts in the presence and ab...

M. Marafi; A. Stanislaus; C. J. Mumford

1993-01-01T23:59:59.000Z

164

Rapid optical method for logging dust concentration versus depth in glacial ice  

E-Print Network (OSTI)

to a cable that can lower the device down a 3-in. 7.5-cm borehole filled with butyl acetate. LED photons to the attenuation by particles.6 The AMANDA collaboration recently completed a large observatory, buried in deep a hot-water drilling tech- nique, they melted cylindrical holes down to depths of 2000 m in which were

Price, P. Buford

165

Molecular dynamics simulation of anhydrous lithium acetate: crystalline and molten phases  

Science Journals Connector (OSTI)

The results of molecular dynamics simulations of the crystalline and molten phase of anhydrous lithium acetate are presented. The potential parameters were obtained from empirical fitting to the crystalline phases of the material. The simulations were carried out for 216 molecules in an NPT ensemble using the DLPOLY program. A structural model is proposed for both the crystalline and molten phases of lithium acetate. Calculated values of the melting point, diffusion coefficient and structural parameters of lithium acetate are in reasonable agreement with experimental results.

L.S. Barreto; K.A. Mort; R.A. Jackson; O.L. Alves

2002-01-01T23:59:59.000Z

166

Direct Determination of Trace-Level Haloacetic Acids in Drinking Water by Two-1 Dimensional Ion Chromatography with Suppressed Conductivity2  

E-Print Network (OSTI)

1 Direct Determination of Trace-Level Haloacetic Acids in Drinking Water by Two-1 Dimensional Ion thetreatment process of drinking water, disinfectants (chlorine, ozone, chlorine dioxide)13 react on water of the nine existing Halo-Acetic Acids (HAA) are commonly found15 in drinking water(Monochloroacetic acid MCAA

Boyer, Edmond

167

Graphene for reducing bubble defects and enhancing mechanical properties of graphene/cellulose acetate composite films  

Science Journals Connector (OSTI)

In this study, we have demonstrated a strategy by which graphene was used to reduce the bubble defects and enhance the mechanical properties in graphene/cellulose acetate (Gr/CA) composite films. Mono- and multil...

Lei Liu; Zhigang Shen; Shuaishuai Liang; Min Yi…

2014-01-01T23:59:59.000Z

168

Decarboxylative-Coupling of Allyl Acetate Catalyzed by Group 10 Organometallics, [(phen)M(CH3)]+  

Science Journals Connector (OSTI)

In step 2a, allylic alkylation occurs to give 1-butene and reform metal acetate, [(phen)M(O2CCH3)]+, with Ni (36%) > Pd (28%) > Pt (2%). ...

Matthew Woolley; Alireza Ariafard; George N. Khairallah; Kim Hong-Yin Kwan; Paul S. Donnelly; Jonathan M. White; Allan J. Canty; Brian F. Yates; Richard A. J. O’Hair

2014-10-20T23:59:59.000Z

169

Emulsion polymerization of ethylene-vinyl acetate-branched vinyl ester using a pressure reactor system.  

E-Print Network (OSTI)

??A new pressure reactor system was designed to synthesize a novel branched ester-ethylene-vinyl acetate (BEEVA) emulsion polymer. The reactor system was capable of handling pressure… (more)

Tan, Chee Boon

2008-01-01T23:59:59.000Z

170

A simple and rapid method for lithium acetate-mediated transformation of Kluyveromyces marxianus cells  

Science Journals Connector (OSTI)

Efficient plasmid transformation of Kluyveromyces marxianus cells of 1.9 × 103 transformant ?g?1...DNA with an episomal plasmid was achieved by the use of a simple lithium acetate method with the addition of 10 m...

Daiane Felberg Antunes…

171

Conduction mechanism of lithium bis(oxalato)borate–cellulose acetate polymer gel electrolytes  

Science Journals Connector (OSTI)

Polymer gel electrolytes (PGE) belonging to salt–solvent–polymer hybrid systems are prepared using a mixture of lithium bis(oxalato)borate (LiBOB), ?-butyrolactone (?-BL), and cellulose acetate (CA). The increase...

S. Z. Z. Abidin; M. Z. A. Yahya; O. H. Hassan; A. M. M. Ali

2014-12-01T23:59:59.000Z

172

Proton spin conversion of coupled methyl groups in lithium acetate studied by inelastic neutron scattering  

Science Journals Connector (OSTI)

The temperature dependence of the tunneling spectrum of methyl groups in lithium acetate dihydrate has been studied in the temperature...3 pairs which are isolated from each other. However, from the fact that the...

A. Heidemann; K. J. Abed; C. J. Barker…

1987-01-01T23:59:59.000Z

173

Study of the Dipolar Proton Spin System in Lithium Acetate with NMR Dispersion Spectroscopy  

Science Journals Connector (OSTI)

Lithium acetate contains almost freely rotating methyl groups [1...3-rotors lie in coaxial pairs, with their planes of rotation separated by 2.5 Å along the rotation axis, a not so large distance compared to the ...

E. Crits; L. Van Gerven

1987-01-01T23:59:59.000Z

174

E-Print Network 3.0 - acetic aldehyde Sample Search Results  

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

results for: acetic aldehyde Page: << < 1 2 3 4 5 > >> 1 THE JOURNAL OF BIOL.OGICAL CHEMISTRY 0 1990 by The American Society for Biochemistry and Molecular Biology, Inc. Summary:...

175

E-Print Network 3.0 - alcohols aldehydes acetals Sample Search...  

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

alcohols aldehydes acetals Page: << < 1 2 3 4 5 > >> 1 THE JOURNAL OF BIOL.OGICAL CHEMISTRY 0 1990 by The American Society for Biochemistry and Molecular Biology, Inc. Summary:...

176

E-Print Network 3.0 - alcohol aldehyde acetals Sample Search...  

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

for: alcohol aldehyde acetals Page: << < 1 2 3 4 5 > >> 1 THE JOURNAL OF BIOL.OGICAL CHEMISTRY 0 1990 by The American Society for Biochemistry and Molecular Biology, Inc. Summary:...

177

E-Print Network 3.0 - aqueous potassium acetate Sample Search...  

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

Heat at 70 C for 30'. 8. Add 100ml 5M potassium acetate, vortex 30". 9. Allow... to tube. 13. Invert to mix and ... Source: Singer, Mitchell - Section of Microbiology,...

178

Effect of Fluorogestone Acetate (cronolone) on the performance of fine-wool ewes  

E-Print Network (OSTI)

EFFECT OF FLUOROGESTONE ACETATE (CRONOLONE) ON THE PERFORMANCE OF FINE-WOOL EWES A Thesis By SALAH AYACHI Submitted to the Graduate College of the Texas ARM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1967 Major Subject: Physiology of Reproduction EFFECT OF FLUOROGESTONE ACETATE (CRONOLONE I ON THE PERFORMANCE OF FINE-WOOL EWES A Thesis SALAH AYACHI Approved as to style and content by: (Chairman of Committ e) d of Departmen...

Ayachi, Salah

1967-01-01T23:59:59.000Z

179

Effect of acetate and other cell wall components on enzymatic hydrolysis of aspen wood  

E-Print Network (OSTI)

although it can be imagined that the xylan removal would result in more accessible pore volume and specific surface area, which would favor increased enzyme penetration and attachment to cellulose. Since acetate plays an important role in the resistance... although it can be imagined that the xylan removal would result in more accessible pore volume and specific surface area, which would favor increased enzyme penetration and attachment to cellulose. Since acetate plays an important role in the resistance...

Kong, Fanran

2012-06-07T23:59:59.000Z

180

The quantification of oxygen toxicity by the technique of cellulose acetate electrophoresis of rat serum proteins  

E-Print Network (OSTI)

THE QUANTIFICATION OF OXYGEN TOXICITY BY THE TECHNIQUE OF CELLULOSE ACETATE ELECTROPHORESIS OF RAT SERUM PROTEINS A Thesis by MARCIA WAGNER BARKER Submitted to the Graduate College of Texas A&ii University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE December 1979 Major Subject: Biology THE QUANTIFICATION OF OXYGEN TOXICITY BY THE TECHNIQUE OF CELLULOSE ACETATE ELECTROPHORESIS OF RAT SERUM PROTEINS A Thesis by MARCIA WAGNER BARKER Approved...

Barker, Marcia Wagner

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Interspecies acetate transfer influences the extent of anaerobic benzoate degradation by syntrophic consortia  

SciTech Connect

Benzoate degradation by an anaerobic, syntrophic bacterium, strain SB, in coculture with Desulfovibrio strain G-11 reached a threshold value which depended on the amount of acetate added, and ranged from about 2.5 to 29.9 {mu}M. Increasing acetate concentrations also uncompetitively inhibited benzoate degradation. The apparent V{sub max} and K{sub m} for benzoate degradation decreased with increasing acetate concentration, but the benzoate degradation capacity (V{sub max}/K{sub m}) of cell suspensions remained comparable. The addition of an acetate-using bacterium to cocultures after the threshold was reached resulted in the degradation of benzoate to below the detection limit. Mathematical simulations showed that the benzoate threshold was not predicted by the inhibitory effect of acetate on benzoate degradation kinetics. With nitrate instead of sulfate as the terminal electron acceptor, no benzoate threshold was observed in the presence of 20 mM acetate even though the degradation capacity was lower with nitrate than with sulfate. When strain SB was grown with a hydrogen-using partner that had a 5-fold lower hydrogen utilization capacity, a 5 to 9-fold lower the benzoate degradation capacity was observed compared to SB/G-11 cocultures. The Gibb`s free energy for benzoate degradation was less negative in cell suspensions with threshold compared to those without threshold. These studies showed that the threshold was not a function of the inhibition of benzoate degradation capacity by acetate, or the toxicity of the undissociated form of acetate. Rather a critical or minimal Gibb`s free energy may exist where thermodynamic constraints preclude further benzoate degradation.

Warikoo, V.; McInerney, M.J.; Suflita, J.M. [and others

1997-03-01T23:59:59.000Z

182

Temperature profile for glacial ice at the South Pole: Implications for life in a nearby subglacial lake  

E-Print Network (OSTI)

-induced melting temperature of freshwater ice. To produce the strong radar signal, the frozen lake must consistTemperature profile for glacial ice at the South Pole: Implications for life in a nearby subglacial by P. Buford Price, April 22, 2002 Airborne radar has detected 100 lakes under the Antarctic ice cap

Price, P. Buford

183

Impact of Orbital Parameters and Greenhouse Gas on the Climate of MIS 7 and MIS 5 Glacial Inceptions  

Science Journals Connector (OSTI)

This work explores the impact of orbital parameters and greenhouse gas concentrations on the climate of marine isotope stage (MIS) 7 glacial inception and compares it to that of MIS 5. The authors use a coupled atmosphere–ocean general circulation ...

Florence Colleoni; Simona Masina; Annalisa Cherchi; Doroteaciro Iovino

2014-12-01T23:59:59.000Z

184

Late Glacial to Preboreal sea-level rise recorded by the previous termRhne deltaic systemnext term  

E-Print Network (OSTI)

Late Glacial to Preboreal sea-level rise recorded by the previous termRhône deltaic systemnext term by progradation initiated during the first phase of the Younger Dryas, a period of reduced sea-level rise or stillstand. The delta kept pace with resumed sea-level rise during the Preboreal (which is estimated at about

Paris-Sud XI, Université de

185

Subarctic Pacific evidence for a glacial deepening of the oceanic respired carbon pool S.L. Jaccard a,d,  

E-Print Network (OSTI)

Subarctic Pacific evidence for a glacial deepening of the oceanic respired carbon pool S.L. Jaccard of the overturning circulation. Volumetrically the Pacific Ocean dominates the world ocean (it is three times larger of Atmospheric and Oceanic Sciences, Princeton University, Princeton, USA c Department of Geosciences, Princeton

Gilli, Adrian

186

The Effect of a Large Freshwater Perturbation on the Glacial North Atlantic Ocean Using a Coupled General Circulation Model  

Science Journals Connector (OSTI)

The commonly held view of the conditions in the North Atlantic at the last glacial maximum, based on the interpretation of proxy records, is of large-scale cooling compared to today, limited deep convection, and extensive sea ice, all associated ...

C. D. Hewitt; A. J. Broccoli; M. Crucifix; J. M. Gregory; J. F. B. Mitchell; R. J. Stouffer

2006-09-01T23:59:59.000Z

187

Trends Online - Area and Carbon Content of Sphagnum Since Last Glacial  

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

Area and Carbon Content of Sphagnum Since Last Glacial Maximum DOI: 10.3334/CDIAC/vrc.001 image Data image Graphics Investigators K. Gajewski, A. Viau, M. Sawada, D. Atkinson and S. Wilson Laboratory for Paleoclimatology and Climatology, Department of Geography, University of Ottawa, 165 Waller Street, Ottawa, Ontario, K1N 6N5 Canada. Period of Record 21000-0 years BP Methods The distribution and abundance of Sphagnum spores in North America and Eurasia are mapped for the past 21ka, as described in Gajewski et al. (2002). In summary, spore data were taken from existing pollen data bases, as were radiocarbon chronologies. The abundance of Sphagnum spores was mapped at 2000-year intervals beginning 21000 years BP (before present). The present-day distribution of abundant Sphagnum spores corresponds

188

Tracer transport in the Greenland Ice Sheet: constraints on ice cores and glacial history  

Science Journals Connector (OSTI)

The climate history and dynamics of the Greenland Ice Sheet are studied using a coupled model of the depositional provenance and transport of glacier ice, allowing simultaneous prediction of the detailed isotopic stratigraphy of ice cores at all the major Greenland sites. Adopting a novel method for reconstructing the age–depth relationship, we greatly improve the accuracy of semi-Lagrangian tracer tracking schemes and can readily incorporate an age-dependent ice rheology. The larger aim of our study is to impose new constraints on the glacial history of the Greenland Ice Sheet. Leading sources of uncertainty in the climate and dynamic history are encapsulated in a small number of parameters: the temperature and elevation isotopic sensitivities, the glacial–interglacial precipitation contrast and the effective viscosity of ice in the flow law. Comparing predicted and observed ice layering at ice core sites, we establish plausible ranges for the key model parameters, identify climate and dynamic histories that are mutually consistent and recover the past depositional elevation of ice cores to ease interpretation of their climatic records. With the coupled three-dimensional model of ice dynamics and provenance transport we propose a method to place all the ice core records on a common time scale and use discrepancies to adjust the reconstructed climate history. Analysis of simulated GRIP ice layering and borehole temperature profiles confirms that the GRIP record is sensitive to the dynamic as well as to the climatic history, but not enough to strongly limit speculation on the state of the Greenland Ice Sheet during the Eemian. In contrast, our study indicates that the Dye 3 and Camp Century ice cores are extremely sensitive to ice dynamics and greatly constrain Eemian ice sheet reconstructions. We suggest that the maximum Eemian sea-level contribution of the ice sheet was in the range of 3.5–4.5 m.

Nicolas Lhomme; Garry K.C. Clarke; Shawn J. Marshall

2005-01-01T23:59:59.000Z

189

Coupling glacial lake impact, dam breach, and flood processes: A modeling perspective  

Science Journals Connector (OSTI)

Abstract Glacial lake outburst floods (GLOFs) are highly mobile mixtures of water and sediment that occur suddenly and are capable of traveling tens to hundreds of kilometers with peak discharges and volumes several orders of magnitude larger than those of normal floods. They travel along existing river channels, in some instances into populated downstream regions, and thus pose a risk to people and infrastructure. Many recent events involve process chains, such as mass movements impacting glacial lakes and triggering dam breaches with subsequent outburst floods. A concern is that effects of climate change and associated increased instability of high mountain slopes may exacerbate such process chains and associated extreme flows. Modeling tools can be used to assess the hazard of potential future GLOFs, and process modeling can provide insights into complex processes that are difficult to observe in nature. A number of numerical models have been developed and applied to simulate different types of extreme flows, but such modeling faces challenges stemming from a lack of process understanding and difficulties in measuring extreme flows for calibration purposes. Here we review the state of knowledge of key aspects of modeling GLOFs, with a focus on process cascades. Analysis and simulation of the onset, propagation, and potential impact of \\{GLOFs\\} are based on illustrative case studies. Numerical models are presently available for simulating impact waves in lakes, dam failures, and flow propagation but have been used only to a limited extent for integrated simulations of process cascades. We present a spectrum of case studies from Patagonia, the European Alps, central Asia, and the Himalayas in which we simulate single processes and process chains of past and potential future events. We conclude that process understanding and process chain modeling need to be strengthened and that research efforts should focus on a more integrative treatment of processes in numerical models.

Raphael Worni; Christian Huggel; John J. Clague; Yvonne Schaub; Markus Stoffel

2014-01-01T23:59:59.000Z

190

Cobalt recovery with simultaneous methane and acetate production in biocathode microbial electrolysis cells  

Science Journals Connector (OSTI)

Abstract Cobalt was successfully recovered with simultaneous methane and acetate production in biocathode microbial electrolysis cells (MECs). At an applied voltage of 0.2 V, 88.1% of Co(II) was reduced with concomitantly achieving yields of 0.266 ± 0.001 mol Co/mol COD, 0.113 ± 0.000 mol CH4/mol COD, and 0.103 ± 0.003 mol acetate/mol COD. Energy efficiencies relative to the electrical input were 21.2 ± 0.05% (Co), 100.9 ± 3.2% (CH4), and 1.0 ± 0.01% (acetate), and overall energy efficiencies relative to both electrical input and energy of anodic substrate averaged 3.7 ± 0.05% (Co), 17.5 ± 1.4% (CH4) and 0.5 ± 0.001% (acetate). Applied voltage, initial Co(II) concentration, and temperature affected system performance. The apparent activation energy (Ea) obtained in \\{MECs\\} was 26.7 kJ/mol compared to 40.5 kJ/mol in the abiotic controls, highlighting the importance of cathodic microbial catalysis to Co(II) reduction. Dominant microorganisms most similar to Geobacter psychrophilus, Acidovorax ebreus, Diaphorobacter oryzae, Pedobacter duraquae, and Prolixibacter bellariivorans were observed on the biocathodes. This study provides a new process for cobalt recovery and recycle of spent lithium ion batteries with simultaneous methane and acetate production in the biocathode MECs.

Liping Huang; Linjie Jiang; Qiang Wang; Xie Quan; Jinhui Yang; Lijie Chen

2014-01-01T23:59:59.000Z

191

Processing Research snd Development of ‘Green’ Polymer Nanoclay Composites Containing a Polyhydroxybutyrate, Vinyl Acetates, and Modified Montmorillonite Clay.  

E-Print Network (OSTI)

??The purpose of this research was to determine the feasibility of direct melt-blending (intercalation) montmorillonite nanoclay to polyhydroxybutyrate along with vinyl acetate, at different weight… (more)

McKirahan, James N. Jr.

2013-01-01T23:59:59.000Z

192

E-Print Network 3.0 - acetate single crystals Sample Search Results  

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

Summary: precipitate Total crystals Only crystalb 1 30% MPD Na Acetate pH 4.6 0.02 M CaCl2 5.06 197 540 17 1 2 0.4 M K... a single crystal from 755 samples. Note that had the...

193

A low-temperature neutron diffraction study of Mn12-acetate  

Science Journals Connector (OSTI)

The low-temperature structure of the title dodecanuclear mixed-valence manganese carboxylate, [Mn12O12(CD3COO)16(H2O)4]·2CD3COOH·4H2O, is similar to the room-temperature structure, differing by a small change in the configuration of one of the coordinated acetate groups, related to additional hydrogen bonding.

Langan, P.

2001-08-09T23:59:59.000Z

194

Natural abundances of carbon isotopes in acetate from a coastal marine sediment  

Science Journals Connector (OSTI)

...isolat-ed from Cape Lookout Bight sediments. Samples were collected...anoxic sediments of Cape Lookout Bight, North Carolina. Recently...acetate cycling. Cape Lookout Bight is an organic-rich coastal basin about 2 km2 in area located 115...

NE Blair; CS Martens; DJ Des Marais

1987-04-03T23:59:59.000Z

195

Structural, Electrochemical, and Spectroscopic Investigation of Acetate Bridged Dinuclear Tetrakis-Schiff Base Macrocycles of Mn  

E-Print Network (OSTI)

resembling the oxygen-evolving complex (OEC) in photosystem II and dimanganese catalase enzymes, resulting+ and Zn2LAc+ , the two metal centers are bridged by an acetate ligand. [Mn2LAc](ClO4)·(DMF)0.5, [Mn2LAc for substrate molecules bound to redox active metal centers.5-10 In 1970, Robson showed that dinuclear tetrakis

Dinolfo, Peter H.

196

Acetate Assimilation by Nitrobacter agilis in Relation to Its “Obligate Autotrophy”  

Science Journals Connector (OSTI)

...agilis grew slowly when the nitrite-free mineral medium was supplemented with acetate...pro- duced when compared to growth in mineral media. After five transfers through the...by the arrows), at which time sterile mineral medium (A) was inoculated with organisms...

Arnold J. Smith; Derek S. Hoare

1968-03-01T23:59:59.000Z

197

Properties of acetate yarns having an increased content of elementary filaments  

Science Journals Connector (OSTI)

A process has been developed for preparing 11/32 and 16.6/38 tex complex acetate yarns. Thereupon the yarn strength is increased by a factor of 1.2, and the resistance to repeated bending by a factor of 1.2–1.4.

M. T. Primkulov; L. A. Khairullina; A. Yu. Atazhanov

198

Identification of Transport Proteins Involved in Free Fatty Acid Efflux in Escherichia coli  

Science Journals Connector (OSTI)

...1980. Differential effects of ethanol and hexanol...fatty-acid-derived fuels and chemicals from plant...and KY San. 2012. Effect of acetate formation...for the synthesis of fuels and chemicals. Nature...Candlish, SE Harding, NC Price, and AR Walmsley. 2003...

Rebecca M. Lennen; Mark G. Politz; Max A. Kruziki; Brian F. Pfleger

2012-10-26T23:59:59.000Z

199

Enediolate-Dilithium Amide Mixed Aggregates in the Enantioselective Alkylation of Arylacetic Acids: Structural  

E-Print Network (OSTI)

Despite remarkable progress in the field of catalytic asymmetric synthesis,1 asymmetric alkylations of lithium enolates are pre- dominantly based on covalent chiral auxiliaries even in the simplest functionalizations.2-5 Recently, we developed an alkylation of the dianions of aryl and heteroaryl acetic acids6

Collum, David B.

200

Uropathogenic Escherichia coli CFT073 Is Adapted to Acetatogenic Growth but Does Not Require Acetate during Murine Urinary Tract Infection  

Science Journals Connector (OSTI)

...d-serine (Fig. 1a), though CFT073 does reach stationary phase slightly sooner...sodium acetate as a sole carbon source than does MG1655 as shown in Fig. 1d. These data...metabolism, dissimilatory acetate metabolism does play a role in colonization of the murine...

Andrew T. Anfora; David K. Halladin; Brian J. Haugen; Rodney A. Welch

2008-10-06T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

MembFac -Scoring Sheet 1. 12% MPD, 0.1 M Na Acetate pH 4.6, 0.1 M Sodium Chloride  

E-Print Network (OSTI)

Phosphate, 0.1 M Na Acetate pH 4.6, 0.1 M Lithium Sulfate 10. 12% PEG 6000, 0.1 M Na Acetate pH 4.6, 0.1 MMembFac - Scoring Sheet 1. 12% MPD, 0.1 M Na Acetate pH 4.6, 0.1 M Sodium Chloride 2. 12% PEG 4000, 0.1 M Na Acetate pH 4.6, 0.1 M Zinc Acetate 3. 10% PEG 4000, 0.1 M Na Acetate pH 4.6, 0.2 M Ammonium

Hill, Chris

202

Arabidopsis LHT1 Is a High-Affinity Transporter for Cellular Amino Acid Uptake in Both Root Epidermis and Leaf Mesophyll  

Science Journals Connector (OSTI)

...and a 10-fold (100 muM) excess of the respective amino acids...Pellets were resuspended in lithium buffer (0.7% lithium acetate and 0.6% LiCl; Pickering...Pickering Laboratories) using lithium buffer as an eluant. Amino acids...

Axel Hirner; Friederike Ladwig; Harald Stransky; Sakiko Okumoto; Melanie Keinath; Agnes Harms; Wolf B. Frommer; Wolfgang Koch

2006-06-30T23:59:59.000Z

203

Functional Genomic Analysis of the AUXIN/INDOLE-3-ACETIC ACID Gene Family Members in Arabidopsis thaliana  

Science Journals Connector (OSTI)

...Ecker b Beth Hughes a Amy Liu a Courtney Onodera a Hong Quach a Alison Smith a Guixia Yu a Athanasios Theologis a 5 5 To whom correspondence...was 0.001. This strict criteria limits the type I family-wise error rate and allowed us to consider genes that demonstrated...

Paul J. Overvoorde; Yoko Okushima; José M. Alonso; April Chan; Charlie Chang; Joseph R. Ecker; Beth Hughes; Amy Liu; Courtney Onodera; Hong Quach; Alison Smith; Guixia Yu; Athanasios Theologis

2005-11-11T23:59:59.000Z

204

Functional Genomic Analysis of the AUXIN/INDOLE-3-ACETIC ACID Gene Family Members in Arabidopsis thaliana  

Science Journals Connector (OSTI)

...seedlings. (B) Venn diagram showing the number of...signaling. METHODS Materials All chemicals used for...384-well format, and handling of samples was performed...comparative analysis, Venn diagrams were drawn using GeneSpring...Supplemental Data The following materials are available in the...

Paul J. Overvoorde; Yoko Okushima; José M. Alonso; April Chan; Charlie Chang; Joseph R. Ecker; Beth Hughes; Amy Liu; Courtney Onodera; Hong Quach; Alison Smith; Guixia Yu; Athanasios Theologis

2005-11-11T23:59:59.000Z

205

Tobacco Mosaic Virus Replicase-Auxin/Indole Acetic Acid Protein Interactions: Reprogramming the Auxin Response Pathway To Enhance Virus Infection  

Science Journals Connector (OSTI)

...pTRV1 and pTRV2, were kindly provided by S. P. Dinesh-Kumar, Yale University (26). The LeIAA26 ORF was PCR...377-398. 26 Liu, Y., M. Schiff, and S. P. Dinesh-Kumar. 2002. Virus-induced gene silencing in tomato...

Meenu S. Padmanabhan; Sabrina R. Kramer; Xiao Wang; James N. Culver

2007-12-19T23:59:59.000Z

206

Nucleic acids, compositions and uses thereof  

DOE Patents (OSTI)

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

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

2012-02-21T23:59:59.000Z

207

Nucleic acid compositions and the encoding proteins  

SciTech Connect

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

Preston, III, James F.; Chow, Virginia; Nong, Guang; Rice, John D.; St. John, Franz J.

2014-09-02T23:59:59.000Z

208

Electrochemical properties of lithium hexafluoroarsenate in methyl acetate at various temperatures  

Science Journals Connector (OSTI)

Abstract Electrical conductivities of LiAsF6 in methyl acetate were measured in concentration range of 0.4269–2.2672 mol·kg? 1 at 253.15, 263.15, 273.15, 283.15, 293.15, 303.15, 313.15, and 323.15 K. Data were treated by using the semi-empirical Casteel–Amis equation at high concentrations. The dependence of conductivities on the temperature was described by the Arrhenius relationship. It was shown that activation energies for conductivity linearly increased with the mole fraction of LiAsF6. The variation tendency of the energies of activation for the conductivities of LiAsF6 in the order of aprotic solvents (propylene carbonate, ?-butyrolactone, methyl acetate, tetrahydrofuran) has been discussed on the basis of the hypothesis that various conduction mechanisms occur at high concentration in the solvents of low permittivity. The anodic and cathodic stabilities of the LiAsF6 in methyl acetate were measured on a Pt electrode, a wide enough electrochemical stability window being observed.

Elena Yu. Tyunina; Marina D. Chekunova

2013-01-01T23:59:59.000Z

209

Modeling of the formation of short-chain acids in propane flames  

E-Print Network (OSTI)

In order to better understand their potential formation in combustion systems, a detailed kinetic mechanism for the formation of short-chain monocarboxylic acids, formic (HCOOH), acetic (CH3COOH), propionic (C2H5COOH) and propenic (C2H3COOH)) acids, has been developed. Simulations of lean (equivalence ratios from 0.9 to 0.48) laminar premixed flames of propane stabilized at atmospheric pressure with nitrogen as diluent have been performed. It was found that amounts up to 25 ppm of acetic acid, 15 ppm of formic acid and 1 ppm of C3 acid can be formed for some positions in the flames. Simulations showed that the more abundant C3 acid formed is propenic acid. A quite acceptable agreement has been obtained with the scarce results from the literature concerning oxygenated compounds, including aldehydes (CH2O, CH3CHO) and acids. A reaction pathways analysis demonstrated that each acid is mainly derived from the aldehyde of similar structure.

Battin-Leclerc, Frédérique; Jaffrezo, J L; Legrand, M

2009-01-01T23:59:59.000Z

210

Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay.  

E-Print Network (OSTI)

The electrical and mechanical behavior of carbon black filled poly(vinyl acetate) latex-based and solution-based polymer composites was examined. A set of experiments were performed to distinguish composites with a segregated network (emulsion...

Miriyala, Sethu M.

2009-05-15T23:59:59.000Z

211

Coupled tunnelling motion of a pair of methyl groups in lithium acetate studied by inelastic neutron scattering  

Science Journals Connector (OSTI)

The tunnelling and torsional motions of methyl groups in lithium acetate dihydrate (CH3COOLi·2H2O) have been studied in detail by incoherent inelastic neutron scattering. The results are interpreted by a model of...

S. Clough; A. Heidemann; A. H. Horsewill…

1984-01-01T23:59:59.000Z

212

Cyclic voltammetric investigation of the formation of intermetallic phases at a LiAl electrode in methyl acetate  

Science Journals Connector (OSTI)

The formation of various Li/Al intermetallic phases at the LiAl electrode in methyl acetate was studied using cyclic voltammetry. The thickness ... the reverse sweep, increased acceptance of deposited lithium, ro...

Y. S. Fung; H. C. Lai

1992-03-01T23:59:59.000Z

213

Diffusion of Binary Non-solvent Mixtures in Polymers: Aqueous Ethanol Solutions in Poly(vinyl acetate)  

Science Journals Connector (OSTI)

The diffusion of binary non-solvent mixtures of ethanol and deuterium oxide (D2O) into poly(vinyl acetate) (PVAc) was studied by FT-IR imaging. Initial diffusion rates...

Rafferty, Denise Wade; Koenig, Jack L

2002-01-01T23:59:59.000Z

214

The Influence of Body Position and Microclimate on Ketamine and Metabolite Distribution in Decomposed Skeletal Remains  

Science Journals Connector (OSTI)

......1 M, pH 6.0) and acidified with 100 microL glacial acetic acid. Solid-phase extraction was performed using CleanScreen XCEL 1 48 Well Plates (130 mg, United Chemical Technologies, Bristol, PA). Columns were first conditioned with 3 mL methanol......

H. M. Cornthwaite; J. H. Watterson

2014-10-01T23:59:59.000Z

215

Supporting Information Kiser et al. 10.1073/pnas.1212025109  

E-Print Network (OSTI)

, glacial acetic acid, and 100% methanol. Separated lipids were visualized after incubation of the plate device (Millipore) producing a protein concentration of 10­15 mg/mL and directly used for crystallization-10. RPE65-containing fractions were concentrated to 100 L, producing a protein concentration of 10 mg

Palczewski, Krzysztof

216

Comparative Study of Sample Preparation Techniques Coupled to GC for the Analysis of Halogenated Acetic Acids (HAAs) Acids in Tap Water  

Science Journals Connector (OSTI)

......SPE was studied as a possible alternative to LLE for the analysis of...was passed through the SPE car- tridge without a vacuum system...ization conditions were: ion energy 70 eV and mass range 10 to...dure can be proposed as an alternative accu- rate method for the......

Sadia Waseem; Md. Pauzi Abdullah

2010-03-01T23:59:59.000Z

217

9,10-Anthracenedicarbaldehyde bis[(4,5-dihydro-1H-imidazol-2-yl)hydrazone] acetic acid hydrochloric acid trihydrate salt (Bisantrene)  

E-Print Network (OSTI)

. BASSI, pp. 64-71. Delft Univ. Press. JOHNSON, C. K. (1976). ORTEP. 3rd revision. Report ORNL- 5138. Oak Ridge National Laboratory, Tennessee. MAIN, P., FISKE, S. J., HULL, S. E., LESSINGER, L., GERMAIN, G., DECLERCQ, J.-P. & WOOLFSON, M. M. (1980...

Siahaan, Teruna J.; Gnanasambandan, T.; Yalkowsky, S. H.

1986-01-01T23:59:59.000Z

218

Effects of feeding hygromycin B and chlormadinone acetate on performance of a commercial laying stock  

E-Print Network (OSTI)

at three levels for three weeks stszting at 22 weeks when the bizds had attained 2 $o 3$ production 3 The experimental design fqr Esperiment 2z the continuoup feeding Of hygromycin B starting at, 21 weeks oi' age& and the feeding of chlqrmadinone... weeke starting at 22 weeks when the birds had attained 2 to 3$ production. Treatment Group No. Nation No. Fe les Basal Basal plus 8 gms. CA/ton. + Basal plus 12 gms. CA/ton. Basal plus 16 gms. CA/ton. 4o +CA/ton. : Chlormadinone acetate per ton...

Abd El-Maguid, Ferial Saad

2012-06-07T23:59:59.000Z

219

Low-temperature structural phase transition in deuterated and protonated lithium acetate dihydrate  

Science Journals Connector (OSTI)

Heat capacity measurements of protonated lithium acetate dihydrate show a structural phase transition at T = 12 K. This finding is in contrast to earlier work, where it was thought that only the deuterated compound undergoes a low temperature structural phase transition. This finding is confirmed by low temperature ultrasound spectroscopy, where the structural phase transition is associated with a velocity decrease of the ultrasonic waves, i.e. with an elastic softening. We compare the thermodynamic properties of the protonated and deuterated compounds and discuss two alternatives for the mechanism of the phase transition based on the thermal expansion measurements.

F. Schröder; B. Winkler; E. Haussühl; P.T. Cong; B. Wolf; M. Avalos-Borja; M. Quilichini; B. Hennion

2010-01-01T23:59:59.000Z

220

Reply to comment by T. Molg et al. on ``Recent glacial recession in the Rwenzori Mountains of East Africa due to rising air temperature''  

E-Print Network (OSTI)

Reply to comment by T. Mo¨lg et al. on ``Recent glacial recession in the Rwenzori Mountains of East, A. Majugu, A. Muwanga, and B. Nakileza (2006), Reply to comment by T. Mo¨lg et al. on ``Recent.g., Bradley et al., 2006; Thompson et al., 2006] and atmospheric humidity [e.g. Kaser et al., 2004; Mo

Jones, Peter JS

Note: This page contains sample records for the topic "glacial acetic acid" 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

PRELIMINARY REPORT ON EVALUATION OF POTENTIAL ELUANTS FOR NON-ACID ELUTION OF CESIUM FROM RESORCINOL-FORMALDEHYDE RESIN  

SciTech Connect

Small-column ion exchange (SCIX) units installed in high-level waste tanks to remove Cs-137 from highly alkaline salt solutions are among the waste treatment plans in the DOE-complex. Spherical Resorcinol-Formaldehyde (sRF) is the ion exchange resin selected for use in the Hanford Waste Treatment and Immobilization Plant (WTP). It is also the primary ion exchange material under consideration for SCIX at the Hanford site. The elution step of the multi-step ion exchange process is typically done with 0.5 M nitric acid. An acid eluant is a potential hazard in the event of a spill, leak, etc. because the high-level waste tanks are made of carbon steel. Corrosion and associated structural damage may ensue. Studies are ongoing to explore non-acid elution as an alternative. Batch contact sorption equilibrium screening tests have been conducted with 36 potential non-acid eluants. The sorption tests involve equilibrating each cesium-containing eluant solution with the sRF resin for 48 hours at 25 C in a shaker oven. In the sorption tests, an eluant is deemed to have a high cesium elution potential if it minimizes cesium sorption onto the sRF resin. The top candidates (based on lowest cesium sorption distribution coefficients) include ammonium carbonate, ammonium carbonate/ammonium hydroxide, ammonium bicarbonate, rubidium carbonate, ammonium acetate, ammonium acetate/ammonium hydroxide, ammonium bicarbonate/ammonium hydroxide, calcium chloride, and magnesium chloride. The next phase of testing for this work will focus on the following down selected eluants: Ammonium carbonate, ammonium acetate, calcium acetate, magnesium acetate, nitric acid, and ammonium hydroxide. The next testing phase is a confirmation of the elution ability of the selected eluants. It will mimic a typical sRF cesium ion exchange process i.e., sorption or loading, caustic wash, water rinse, and elution via batch contact sorption and quasi column caustic wash/water rinse/elution. Due to corrosion concerns, calcium acetate and magnesium acetate will be tested instead of calcium chloride and magnesium chloride respectively. Nitric acid is for benchmarking since it is the baseline sRF eluant. The information at hand indicates ammonium hydroxide, while a weak base, may hold promise as an effective eluant. Hence, its inclusion among the eluants to be studied despite the fact that it was not tested as a stand-alone eluant earlier.

Adu-Wusu, K.; Pennebaker, F.

2010-09-01T23:59:59.000Z

222

Catalytic oxidation of ethyl acetate over La-Co and La-Cu oxides  

Science Journals Connector (OSTI)

Abstract Lanthanum-containing mixed oxides (La-Co and La-Cu) were synthesized by several methods: exotemplating, evaporation, glycine-nitrate and glycine-nitrate-exotemplating. Samples were characterized by thermogravimetry and differential scanning calorimetry, N2 adsorption, temperature programmed reduction, scanning electron microscopy and X-ray diffraction. The materials obtained were tested as catalysts for ethyl acetate oxidation, as a model volatile organic compound. La-Cu samples showed poor catalytic performance, but La-Co materials were much more active than the individual components. Catalytic activity seems to be mainly determined by the easiness of reduction of the catalysts, which is related to the availability of oxygen from the lattice. Catalysts containing Co or Cu in excess of La (on a molar base) were more active than the corresponding mixed oxides consisting of equal amounts of La and the transition metal. Samples prepared by the evaporation method were more active than those prepared by exotemplating, for the same molar ratio. Samples prepared by evaporation and glycine-nitrate methods calcined at 600 °C had a better performance than the corresponding oxides calcined at 300 °C. The most active sample found in this study was the La-Co mixed oxide prepared by the glycine nitrate method and calcined at 600 °C, 100% conversion of ethyl acetate to H2O and CO2 being achieved at 230 °C.

X. Chen; S.A.C. Carabineiro; P.B. Tavares; J.J.M. Órfão; M.F.R. Pereira; J.L. Figueiredo

2014-01-01T23:59:59.000Z

223

Neutron dosimetry in boron neutron capture therapy using aqueous solutions of lithium acetate  

Science Journals Connector (OSTI)

This paper presents the development of a dosimetry method, based on liquid scintillation (LS) counting of the tritium that is produced in aqueous solutions of lithium acetate, for the determination of the boron and nitrogen absorbed doses in-phantom in BNCT. The dosimeter is passive, integrating, approximately tissue equivalent, and insensitive to gamma rays and the elastic scattering of fast neutrons. The dosimetry method exhibits a response which is proportional to the boron and nitrogen absorbed doses and which can be calibrated to NIST standard solutions of water spiked with tritium. For 0.2 g of lithium acetate dissolved in a milliliter of water, the measured sensitivity is (1.73±0.04)×10?9 cpm per unit of thermal neutron fluence (in neutrons/cm2). For the LS analyzer that was used, the background signal was 12.84±0.02 cpm, yielding a thermal neutron fluence threshold for this detection method of approximately 7×109 neutrons/cm2.

L.J. Rakovan; T.E. Blue; A.L. Vest

1998-01-01T23:59:59.000Z

224

Effect of ethylene-vinyl acetate copolymer-based depressants on the low-temperature properties of components of light- and heavy-grade marine fuels  

Science Journals Connector (OSTI)

The possibility of using ethylene copolymers with vinyl acetate as additives for light and heavy distillate marine fuels for improving their low-temperature properties has...

N. K. Kondrasheva

2013-09-01T23:59:59.000Z

225

Dynamic characteristics of bacterial community in a sulphate-reducing bioreactor fed with acetate and intermittent ethanol  

Science Journals Connector (OSTI)

Acetotrophic Sulphate-Reducing Bacteria (ASRB) were enriched in a sulphidogenic Continuous Stirred Tank Reactor (CSTR) fed with acetate/ethanol and diagnosed by Single-Strand Conformation Polymorphism (SSCP) and 16S rRNA gene clone library. The CSTR was run for 65 days with synthetic wastewater containing sulphate and acetate with intermittent ethanol at hydraulic retention time of 10 h. The Sulphate-Removal Rate (SRR) reached to 3.8 g/(Lâ?¢day) after 35 days of start-up. The SSCP profiles of bacterial community changed rapidly at the beginning of start-up before Desulphococcus sp., Desulphomicrobium sp., Aminomonas and Anaerolinea formed a stable community. Bacterial diversity decreased when the ethanol in the influent was replaced by acetate of equal Chemical Oxygen Demand (COD). Desulphomicrobium sp. was enriched and found to have a significant role in acetate utilisation. When ethanol was re-added instead of acetate of equal COD strength, microbial diversity increased and the Desulphomicrobium band of SSCP profiles became weak. At the later start-up stage, the 16S rRNA gene clone library indicated the presence of bacteria belonging to six different known phyla and sequences with similarities to those of sulphate-reducing bacteria accounted for 22%. The SSCP band sequences revealed that the characteristics of bacterial community populations resembled those of clone library sequences. The present study showed the addition of ethanol to influent would enhance bacterial diversity and SRR, ASRB could be enriched and Desulphomicrobium sp. was the primary source of acetate oxidation.

Yangguo Zhao; Nanqi Ren; Aijie Wang; Yiwei Liu

2008-01-01T23:59:59.000Z

226

Direct conversion of carboxylate salts to carboxylic acids via reactive extraction  

E-Print Network (OSTI)

of Petroleum Processing, P. R. China Chair of Advisory Committee: Dr. Mark T. Holtzapple The MixAlco process, a proprietary technology owned by Texas A&M University, converts biomass (e.g., municipal solid waste, sewage sludge, paper, agricultural... residues, and energy crops) into usable chemicals (e.g., acetic acid) and fuels (e.g., ethanol). Historically, calcium carbonate has been used as the buffer. Recently, it was found that using ammonium bicarbonate as the buffering agent enhances...

Xu, Xin

2008-10-10T23:59:59.000Z

227

Iodine Treatment of Lignin–Cellulose Acetate Electrospun Fibers: Enhancement of Green Fiber Carbonization  

Science Journals Connector (OSTI)

Iodine Treatment of Lignin–Cellulose Acetate Electrospun Fibers: Enhancement of Green Fiber Carbonization ... The chemical composition of the samples were analyzed using an Oxford Instruments X-Max20 energy dispersive X-ray spectrometer (EDS), Thermo Scientific Nicolet 6700 Fourier transform infrared (FTIR) spectrometer with a GladiATR single reflection ATR accessory (operated between 400 and 4000 cm–1 with a 4 cm–1 resolution averaged over 40 scans), and Renishaw Raman spectrometer operated using a 785 nm near-infrared laser (1100–1900 cm–1 with a 0.8 cm–1 resolution averaged over 3 scans). ... This work presents a systematic study of the ratio between the integrated intensities of the disorder-induced D and G Raman bands (ID/IG) in nanographite samples with different crystallite sizes (La) and using different excitation laser energies. ...

Makoto Schreiber; Singaravelu Vivekanandhan; Amar Kumar Mohanty; Manjusri Misra

2014-11-06T23:59:59.000Z

228

Translational/rotational coupling of the hindered CH 3 quantum-rotor in lithium acetate dihydrate  

Science Journals Connector (OSTI)

The multiplet structure of the rotational-tunneling peaks in the inelastic neutron-scattering spectrum of lithium acetate is widely regarded as evidence of coupled pairs of CH 3 quantum rotors. However our molecular-mechanics study which has no adjustable parameters reveals that rotor/rotor coupling is less important than translational/rotational coupling. In order to remain at a potential-energy minimum during CH 3 group reorientation the center-of-mass of this group follows an almost circular path around its time-average position. The energy levels from this dynamical model reproduce the observed tunneling-transitions reasonably well and the predicted rectangular density distribution of the three methyl H-atoms is in good agreement with that measured by single-crystalneutron diffraction.

P. Schiebel; G. J. Kearley; M. R. Johnson

1998-01-01T23:59:59.000Z

229

Polyethylene-supported polyvinylidene fluoride–cellulose acetate butyrate blended polymer electrolyte for lithium ion battery  

Science Journals Connector (OSTI)

The polyethylene (PE)-supported polymer membranes based on the blended polyvinylidene fluoride (PVDF) and cellulose acetate butyrate (CAB) are prepared for gel polymer electrolyte (GPE) of lithium ion battery. The performances of the prepared membranes and the resulting \\{GPEs\\} are investigated by scanning electron microscopy, electrochemical impedance spectroscopy, linear potential sweep, and charge–discharge test. The effect of the ratio of PVDF to CAB on the performance of the prepared membranes is considered. It is found that the GPE based on the blended polymer with PVDF:CAB = 2:1 (in weight) has the largest ionic conductivity (2.48 × 10?3 S cm?1) and shows good compatibility with anode and cathode of lithium ion battery. The LiCoO2/graphite battery using this GPE exhibits superior cyclic stability at room temperature, storage performance at elevated temperature, and rate performance.

Jiansheng Liu; Weishan Li; Xiaoxi Zuo; Shengqi Liu; Zhao Li

2013-01-01T23:59:59.000Z

230

Poly(vinylidenefluoride)-hexafluoropropylene–methyl N-methylpyrrolidinium-N-acetate trifluoromethanesulfonylimide–lithium trifluoromethanesulfonylimide gel electrolytes  

Science Journals Connector (OSTI)

New polymer-ionic liquid-lithium salt gel electrolytes (PILGEs) were prepared using poly(vinylidenefluoride)-hexafluoropropylene copolymer (PVdF(HFP)), methyl N-methylpyrrolidinium-N-acetate trifluoromethanesulfonimide ([MMEPyr][TFSI]), and lithium trifluoromethanesulfonylimide (LiTFSI) in order to investigate the effects of ionic liquids containing an ester group on the electrochemical properties of polymer gel electrolytes. Free standing ionic gels consisting of PVdF(HFP), [MMEPyr][TFSI], and LiTFSI were prepared in a range of weight ratio of polymer/[MMEPyr][TFSI]/LiTFSI = 1/2/0.1 ? 1. Ionic conductivities for the prepared \\{PILGEs\\} were measured with changing temperature and weight ratio of LiTFSI and the obtained values were found to be reasonable (10?4 S cm?1) over the operating temperatures.

Ki-Sub Kim; Seul Bee Lee; Hyunjoo Lee; Hoon Sik Kim; Youngwoo Lee; Kwangsoo Kwack

2009-01-01T23:59:59.000Z

231

Growth and characterization of nonlinear optical ?-glycine single crystal from lithium acetate as solvent  

Science Journals Connector (OSTI)

Single crystals of organic nonlinear optical material, ?-glycine were grown by slow evaporation technique from aqueous solutions of glycine and lithium acetate. The ?-phase was confirmed by single crystal XRD and powder XRD analysis. Presence of various functional groups was identified by FTIR spectrum analysis. Thermal analysis was performed to study the thermal stability of the grown crystals. The dielectric and microhardness studies of the crystals were determined. The optical analysis shows that UV cut-off of ?-glycine is at 240 nm and it has a wide transparency window. The second harmonic generation relative efficiency of the grown crystals was measured by Kurtz and Perry powder technique using Nd:YAG laser and was observed to be 3.4 times that of potassium dihydrogen orthophosphate.

P.V. Dhanaraj; N.P. Rajesh

2009-01-01T23:59:59.000Z

232

Evidence for low-temperature isotopic ordering in methyl-monodeuterated lithium acetate dihydrate  

Science Journals Connector (OSTI)

We measured the heat capacities of methyl-monodeuterated lithium acetate dihydrate single crystals (LiC2H2DO2·2H2O) at 2 K < T < 20 K and Raman spectra at ambient conditions. Significant excess heat capacities were found at T = 14.5 K and 5.5 K. The thermodynamic data is compared to that of fully protonated and fully deuterated LiAc and interpreted in terms of phase transitions between a classical dynamically disordered phase above 14.5 K, a phase stable between 14.5 K and 5.5 K in which there is quantum tunnelling of the methyl groups, and an isotopically ordered phase below 5.5 K.

F. Schröder; B. Winkler; J.D. Bauer; E. Haussühl; B. Rivera Escoto; F. Tristan López; M. Avalos Borja; C. Richter; J. Ferner

2012-01-01T23:59:59.000Z

233

Late Glacial and early Holocene environment in the middle Lahn river valley (Hessen, central-west Germany) and the local impact of early Mesolithic people—pollen and macrofossil evidence  

Science Journals Connector (OSTI)

The Late Glacial to early Holocene river valley landscape of the middle Lahntal in Hessen, central-west Germany, is reconstructed by means of pollen...14C dating combined with pollen, macrofossil and geomorpholog...

Johanna A. A. Bos; Ralf Urz

2003-06-01T23:59:59.000Z

234

Degradation of Cellulose to Organic Acids in its Homogeneous Alkaline Aqueous Solution  

Science Journals Connector (OSTI)

Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemical Physics, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, 230026, P.R. ... Malonic acid (MA), lactic acid (LA), formic acid (FA), and acetic acid (AA) are the major valuable products, among them MA and LA are the top valuable platform molecules for synthesis of bulk chemicals and fuels. ... (21-24) Plenty of research has been reported using ionic liquid as solvent to convert cellulose in its homogeneous solution over solid or liquid catalysts, such as conversion of cellulose to 5-hydroxymethylfurfural (HMF) or lactic acid, etc.(25-27) However, the high-cost of ionic liquids and the difficult in recovery and the difficult in reutilization of ionic liquid limit their application in large scale by now. ...

Lifeng Yan; Xiaoya Qi

2014-01-09T23:59:59.000Z

235

Metal-ion Complexation Effects in C 1s-NEXAFS Spectra of Carboxylic Acids—Evidence by Quantum Chemical Calculations  

SciTech Connect

Previous systematic C 1s-NEXAFS studies carried out for humic acid (HA) loaded with polyvalent metal cations (Mn+) reveal spectral features which were postulated to result from metal ion complexation: a strong decrease of the C 1s (COO-) ? p*Cdouble bond; length as m-dashO transition intensity and the appearance of a new absorption feature at slightly lower energy adjacent to the carboxyl resonance. Although spectroscopic results for the Mn+-PAA (polyacrylic acid) system (selected as model for structurally ill-defined HA) reveal the same spectral features, evidence by an independent approach for interpretation of these features is desirable. It is well established that quantum chemical calculations are capable of reproducing transition features in C 1s core excitation spectra of small organic molecules, e.g., acetate, which is chosen here as a fragment containing the complexing group to model the macromolecular HA and PAA systems. In this study, the RI-ADC(2) approach, as implemented in the TURBOMOLE program package, is applied to calculate vertical core excitation spectra of various metal acetates and the acetate anion. An energy shift (?f) between the C 1s (COO-) ? p*Cdouble bond; length as m-dashO transition of the acetate anion and various metal cation acetates is established. Calculated shifts are very similar to the experimentally observed values for the energy difference between the C 1s (COO-) ? p*Cdouble bond; length as m-dashO peak and the absorption feature appearing after metal ion complexation in Mn+-PAA/PAA. According to our computations, structural changes of the acetate complexes (e.g., the O-CeO bond angle) compared to the free acetate anion are predominantly responsible for the spectral changes observed upon metal ion complexation.

Armbruster, M.; Schimmelpfennig, B; Plaschke, M; Rothe, J; Denecke, M; Klenze, R

2009-01-01T23:59:59.000Z

236

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

E-Print Network (OSTI)

was performed using the lithium acetate method 12 . Strainswas performed using the lithium acetate method 24 . Strains

Steen, Eric James

2010-01-01T23:59:59.000Z

237

Crystallization in the Thin and Ultrathin Films of Poly(ethylene-vinyl acetate) and Linear Low-Density Polyethylene  

E-Print Network (OSTI)

-Density Polyethylene Y. Wang, S. Ge, M. Rafailovich,*, J. Sokolov, Y. Zou, H. Ade, J. Lu1 ning,§ A. Lustiger, and G(ethylene-vinyl acetate) and linear low-density polyethylene (LLDPE) films spun-cast from the polymer/toluene solutions spherulite to sheaflike ag- gregates in polyethylene thin films at a critical thickness of 400 nm. Scho

238

Surface-Configuration Change of CF4 Plasma Treated Cellulose and Cellulose Acetate by Interaction of Water with Surfaces  

Science Journals Connector (OSTI)

Surface-configuration change due to the change of contacting medium from (dry) air to liquid water and also from (dry) air to a high relative humidity air was investigated for cellulose and cellulose acetate. CF4 plasma treatment was used to tag the ...

Takeshi Yasuda; Tsumuko Okuno; Kaori Tsuji; Hirotsugu Yasuda

1996-03-06T23:59:59.000Z

239

Fat metabolism in higher plants: XLIII. Control of fatty acid synthesis in germinating seeds  

Science Journals Connector (OSTI)

Fatty acid synthesis by germinating pea and safflower seeds has been studied by following acetate incorporation in vivo. The pea synthesizes saturated acids in the C14–28 range. In this plant, increased germination temperature and fluoride addition both reduce elongation of stearic acid. In addition, arsenite blocks elongation at the palmitate level. These blocking effects, which have also been studied with in vitro fatty acid-synthesizing systems, indicate the presence of, at least, three separate enzyme systems in pea which are responsible for (a) de novo synthesis of palmitate, (b) elongation of palmitate to stearate, and (c) further elongation of stearate to the very long-chain fatty acids. Safflower is also sensitive to fluoride or arsenite during germination. In the presence of arsenite, palmitate accumulated with a sharp reduction in synthesis of the very long chain fatty acids and linoleate. Fluoride reduced linoleate formation without affecting the very long chain fatty acids. Thus, arsenite and fluoride effects are not uniform from species to species. Although trichloroacetic acid had no effect on synthesis of fatty acids by either seed, other compounds such as decenylsuccinic acid and carbamate weed killers specifically reduce the formation of the very long chain fatty acids by pea thus suggesting a mode of action for these compounds in wax formation.

J.L. Harwood; P.K. Stumpf

1971-01-01T23:59:59.000Z

240

European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 4AV.3.25 MODELLING THE CURING DYNAMICS OF ETHYLENE-VINYL ACETATE  

E-Print Network (OSTI)

.25 MODELLING THE CURING DYNAMICS OF ETHYLENE-VINYL ACETATE S. Kajari-Schröder1 , U. Eitner1 , C. Oprisoni2 , T Hannover, Germany ABSTRACT: The encapsulation of solar cells in polymeric sheets such as ethylene PV module [1]. Ethylene-vinyl acetate (EVA) is the most common encapsulant in the PV industry

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241

High efficiency electrotransformation of Lactococcus lactis spp. lactis cells pretreated with lithium acetate and dithiothreitol  

Science Journals Connector (OSTI)

A goal for the food industry has always been to improve strains of Lactococcus lactis...and stabilize beneficial traits. Genetic engineering is used extensively for manipulating this lactic acid bacterium, while ...

Maria Papagianni; Nicholaos Avramidis; George Filioussis

2007-03-01T23:59:59.000Z

242

Constraints on the late Quaternary glacial history of the Inylchek and Sary-Dzaz valleys from in situ cosmogenic 10Be and 26Al, eastern Kyrgyz Tian Shan  

Science Journals Connector (OSTI)

Abstract Paleoclimatic constraints from regions at the confluence of major climate systems are particularly important in understanding past climate change. Using geomorphic mapping based on remote sensing and field investigations, combined with in situ cosmogenic 10Be and 26Al dating of boulders associated with glacial landforms, we investigate the chronology of past glaciation in the Inylchek and Sary-Dzaz valleys in the eastern Kyrgyz Tian Shan, a tectonically active area with some of the highest peaks in the world outside of the Himalayas. Cosmogenic 10Be and 26Al exposure ages of boulders on moraines record up to five glacial advances including: Lateglacial age lateral moraine remnants and meltwater channels in the upper Inylchek Valley; Last Glacial Maximum (LGM, Marine Oxygen Isotope Stage [MIS] 2) moraines in the Sary-Dzaz Valley and in a terminal moraine complex at the west end of the Inylchek Valley, overriding older moraines; an MIS 4 or 5 moraine remnant above the Inylchek terminal moraine complex; and an older high moraine remnant down-valley from the confluence of the Inylchek and Sary-Dzaz valleys. The evidence for glacial extent in this study is consistent with a limited ice expansion hypothesis for Tian Shan glaciation. Published results from the western and central Kyrgyz Tian Shan do not show evidence for significant LGM glacier expansion, which in combination with the results presented here, indicate a spatial variation in glacier records along the Tian Shan. This may reflect either paleoclimatic gradients or the impact of local physiographic conditions on responses to regional climate change, or both.

Nathaniel Lifton; Casey Beel; Clas Hättestrand; Christine Kassab; Irina Rogozhina; Richard Heermance; Michael Oskin; Douglas Burbank; Robin Blomdin; Natacha Gribenski; Marc Caffee; Brent M. Goehring; Jakob Heyman; Mikhail Ivanov; Yanan Li; Yingkui Li; Dmitry Petrakov; Ryskul Usubaliev; Alexandru T. Codilean; Yixin Chen; Jon Harbor; Arjen P. Stroeven

2014-01-01T23:59:59.000Z

243

Synthesis of iron oxides and the influence of organic acids on the resolubilization of iron minerals  

E-Print Network (OSTI)

of Organ1c Acids on the Resolubi1 izat1on of Iron M1neral s. (May 1984) Er1c Thacher Clarke, B. A. , Southwestern University Chairman of Advisory Committee: Dr. Richard H. Loeppert Equilibrium Fe concentrat1ons of calcareous soil are readily... and reducing agents, buffered in 1. 0 N NH4 acetate at pH 3. 5 and 4. 75, Dissolution rate in oxalic acid decreased in the following order: ferrihydrite, lep1docroc1te, and goeth1te. Rate of Fe ox1de dissolution 1n the presence of com- plexing and reducing...

Clarke, Eric Thacher

2012-06-07T23:59:59.000Z

244

Physical insight into switchgrass dissolution in the ionic liquid 1-ethyl-3-methylimidazolium acetate  

SciTech Connect

Small-angle neutron scattering was used to characterize solutions of switchgrass and the constituent biopolymers cellulose, hemicellulose, and lignin, as well as a physical mixture of them mimicking the composition of switchgrass, dissolved in the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate. The results demonstrate that the IL dissolves the cellulose fibrils of switchgrass, although a supramolecular biopolymer network remains that is not present in solutions of the individual biopolymers and that does not self-assemble in a solution containing the physical mixture of the individual biopolymers. The persistence of a network-like structure indicates that dissolving switchgrass in the IL does not disrupt all of the physical entanglements and covalent linkages between the biopolymers created during plant growth. Reconstitution of the IL-dissolved switchgrass yields carbohydrate-rich material containing cellulose with a low degree of crystallinity, as determined by powder X-ray diffraction, which impacts potential down-stream uses of the biopolymers produced by the process. The data suggests that the use of chemical additives which would break bonds that exist between the lignin and hemicellulose might improve the purity of the resulting product, but may not be able to disrupt the highly physically-entangled biopolymer network sufficiently to facilitate their separation.

Wang, Hui [University of Alabama, Tuscaloosa] [University of Alabama, Tuscaloosa; Gurau, Gabriela [University of Alabama, Tuscaloosa] [University of Alabama, Tuscaloosa; Pingali, Sai Venkatesh [ORNL] [ORNL; O'Neil, Hugh [ORNL] [ORNL; Evans, Barbara R [ORNL] [ORNL; Urban, Volker S [ORNL] [ORNL; Heller, William T [ORNL] [ORNL; Rogers, Robin D [University of Alabama, Tuscaloosa] [University of Alabama, Tuscaloosa

2014-01-01T23:59:59.000Z

245

4 Transformation of Yeast by the Lithium Acetate/Single-Stranded Carrier DNA/PEG Method  

Science Journals Connector (OSTI)

Publisher Summary This chapter discusses the transformation of yeast by the lithium acetate/single-stranded carrier DNA/PEG (LiAc/SSDNA/PEG) method. High efficiency transformation of yeast is used most frequently for applications such as the two-hybrid screen for protein-protein interactions, for one-hybrid screens that detect protein–DNA interactions, for inverted one-hybrid screens to identify DNA elements that bind a transcription factor, and for the screens that detect protein–protein interactions dependent on phosphorylation. The high efficiency LiAc/SSDNA/PEG transformation procedure used to induce the yeast, Sacchuromyces cerevisiae, to take up exogenous DNA has aided in the development and utilization of sophisticated technologies, such as the one, two, and inverted one-hybrid systems. Also, the procedure is important for the efficient construction of libraries of null mutants for the functional analysis of novel yeast genes. These and other molecular genetic techniques have increased the usefulness of this premier eukaryotic model organism so that it can now be considered as a laboratory work horse, which will find its way into many research programs.

R. Daniel Gietz; Robin A. Woods

1998-01-01T23:59:59.000Z

246

Effect of silica on the properties of cellulose acetate/polyethylene glycol membranes for reverse osmosis  

Science Journals Connector (OSTI)

Abstract In this work, a series of cellulose acetate/polyethylene glycol-600 membranes, with varying ratios were prepared by 2-stage phase inversion protocol. The permeation properties were studied by subjecting membranes in indigenously fabricated reverse osmosis plant. After optimization of different CA/PEG ratios, the membrane with highest salt rejection capacity was selected and modified with varying amount of silica. The Modified membranes were characterized for their permeation properties, hydrophilicity, compositional analysis, thermal stability, mechanical strength and morphological studies. Silica significantly influenced the permeation performance of composite membrane. The flux enhanced from 0.35 to 2.46 L/h m2 along with an 11.41% relative increase in salt rejection. The hydrophilicity was significantly enhanced by the addition of silica. In FTIR spectra, the broadening of the peak around 3500 cm? 1 and emergence of peak at 950 cm? 1 specified the incorporation of silica particles. The thermal analysis indicated the relative increase in degradation temperature (Tmax) and glass transition temperature (Tg) for CPS-5 membrane. The mechanical stability of the modified membranes, increased initially, but declined with further addition of silica. The results indicated that the incorporation of SiO2 content in the casting solution improved the fouling resistance of the membranes.

Adnan Ahmad; Sidra Waheed; Shahzad Maqsood Khan; Sabad e-Gul; Muhammad Shafiq; Muhammad Farooq; Khairuddin Sanaullah; Tahir Jamil

2015-01-01T23:59:59.000Z

247

Complete genome sequence of the acetate-degrading sulfate reducer Desulfobacca acetoxidans type strain (ASRB2T)  

SciTech Connect

Desulfobacca acetoxidans Elferink et al. 1999 is the type species of the genus Desulfobacca, which belongs to the family Syntrophaceae in the class Deltaproteobacteria. The species was first observed in a study on the competition of sulfate-reducers and acetoclastic methanogens for acetate in sludge. D. acetoxidans is considered to be the most abundant acetate-degrading sulfate reducer in sludge. It is of interest due to its isolated phylogenetic location in the 16S rRNA-based tree of life. This is the second completed genome sequence of a member of the family Syntrophaceae to be published and only the third genome sequence from a member of the order Syntrophobacterales. The 3,282,536 bp long genome with its 2,969 protein-coding and 54 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Goker, Markus [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Teshima, Hazuki [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; Hammon, Nancy [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); Han, Cliff [Los Alamos National Laboratory (LANL); Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Huntemann, Marcel [U.S. Department of Energy, Joint Genome Institute; Liolios, Konstantinos [U.S. Department of Energy, Joint Genome Institute; Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Pagani, Ioanna [U.S. Department of Energy, Joint Genome Institute; Mavromatis, K [U.S. Department of Energy, Joint Genome Institute; Ovchinnikova, Galina [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; Hauser, Loren John [ORNL; Brambilla, Evelyne-Marie [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Rohde, Manfred [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Spring, Stefan [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; 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; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute; Klenk, Hans-Peter [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany

2011-01-01T23:59:59.000Z

248

European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 4AV.3.115 NON-LINEAR MECHANICAL PROPERTIES OF ETHYLENE-VINYL ACETATE (EVA) AND ITS  

E-Print Network (OSTI)

.115 1 NON-LINEAR MECHANICAL PROPERTIES OF ETHYLENE-VINYL ACETATE (EVA) AND ITS RELEVANCE ABSTRACT: Polymers such as ethylene-vinyl acetate (EVA) encapsulants are known for their non for PV modules is ethylene-vinyl acetate (EVA). It is thus essential for mechanical module and lamination

249

Remarkable increase in 14C-acetate uptake in an epilepsy model rat brain induced by lithium–pilocarpine  

Science Journals Connector (OSTI)

The present study demonstrates changes in rat brain glial metabolism during the acute phase of epilepsy. Status epilepticus (SE) was induced using the lithium–pilocarpine model. Glial metabolism was measured with 14C-acetate. Local cerebral blood flow and glucose metabolism were also measured using 14C-N-isopropyl-p-iodoamphetamine (IMP) and 14C-2-deoxyglucose (2DG), respectively. At the initiation of the seizure, 14C-acetate uptake did not change significantly. However, a marked increase was observed 2 h after the pilocarpine injection in all brain regions studied. The increase of brain uptake was transient, and the maximum enhancement was seen at 2 h after the pilocarpine injection. The increase of 14C-acetate uptake was almost to the same degree in all regions, whereas 14C-IMP and 14C-2DG uptakes showed a heterogeneous increase. In the case of 14C-IMP, the highest increase was observed in the thalamus (280%), and a moderate increase (120 to 150%) was seen in the orbital cortex, cingulate cortex and pyriform cortex. 14C-2DG uptake increased by 130 to 240% in most regions of the brain, however, an increase of only 40 and 20% was observed in the cerebellum and pons-medulla, respectively. These results demonstrated that glial energy metabolism was markedly enhanced during a prolonged seizure. To our knowledge, this study is the first observation showing large and widespread glial metabolic increases in the rat brain during status epilepticus.

Rie Hosoi; Daisuke Kitano; Sotaro Momosaki; Kenji Kuse; Antony Gee; Osamu Inoue

2010-01-01T23:59:59.000Z

250

Fatty acid analogs  

DOE Patents (OSTI)

In one aspect, a radioactively labeled analog of a fatty acid which is capable of being taken up by mammalian tissue and which exhibits an in vivo beta-oxidation rate below that with a corresponding radioactively labeled fatty acid.

Elmaleh, David R. (Newton Center, MA); Livni, Eli (Brookline, MA)

1985-01-01T23:59:59.000Z

251

Catalytic Upgrading of bio-oil using 1-octene and 1-butanol over sulfonic acid resin catalysts  

SciTech Connect

Raw bio-oil from fast pyrolysis of biomass must be refined before it can be used as a transporation fuel, a petroleum refinery feed or for many other fuel uses. Raw bio-oil was upgraded with the neat model olefin, 1-octene, and with 1-octene/1-butanol mixtures over sulfonic acid resin catalysts frin 80 to 150 degrees celisus in order to simultaneously lower water content and acidity and to increase hydrophobicity and heating value. Phase separation and coke formation were key factors limiting the reaction rate during upgrading with neat 1-octene although octanols were formed by 1-octene hydration along with small amounts of octyl acetates and ethers. GC-MS analysis confirmed that olefin hydration, carboxylic acid esterification, acetal formation from aldehydes and ketones and O- and C-alkylations of phenolic compounds occurred simultaneously during upgrading with 1-octene/1-butanol mixtures. Addition of 1-butanol increased olefin conversion dramatically be reducing mass transfer restraints and serving as a cosolvent or emulsifying agent. It also reacted with carboxylic acids and aldehydes/ketones to form esters, and acetals, respectively, while also serving to stabilize bio-oil during heating. 1-Butanol addition also protected the catalysts, increasing catalyst lifetime and reducing or eliminationg coking. Upgrading sharply increased ester content and decreased the amounts of levoglucosan, polyhydric alcohols and organic acids. Upgrading lowered acidity (pH value rise from 2.5 to >3.0), removed the uppleasant ordor and increased hydrocarbon solubility. Water content decreased from 37.2% to < 7.5% dramatically and calorific value increased from 12.6 MJ kg to about 30.0 MJ kg.

Zhang, Zhijun; Wang, Qingwen; Tripathi, Prabhat; Pittman, Charles U.

2011-02-04T23:59:59.000Z

252

Nucleic acid detection compositions  

DOE Patents (OSTI)

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

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

2008-08-05T23:59:59.000Z

253

Cleavage of nucleic acids  

DOE Patents (OSTI)

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

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

2007-12-11T23:59:59.000Z

254

STANDARD OPERATING PROCEDURE ACIDS CONTAINING PHOSPHOROUS  

E-Print Network (OSTI)

12.1 STANDARD OPERATING PROCEDURE for ACIDS CONTAINING PHOSPHOROUS Location(s): ___________________________________________________ Chemical(s): Hypophosphorous acid, methylphosphonic acid, phosphonic acid, phosphoric acid, phosphorous

Pawlowski, Wojtek

255

Microorganisms for producing organic acids  

DOE Patents (OSTI)

Organic acid-producing microorganisms and methods of using same. The organic acid-producing microorganisms comprise modifications that reduce or ablate AcsA activity or AcsA homolog activity. The modifications increase tolerance of the microorganisms to such organic acids as 3-hydroxypropionic acid, acrylic acid, propionic acid, lactic acid, and others. Further modifications to the microorganisms increase production of such organic acids as 3-hydroxypropionic acid, lactate, and others. Methods of producing such organic acids as 3-hydroxypropionic acid, lactate, and others with the modified microorganisms are provided. Methods of using acsA or homologs thereof as counter-selectable markers are also provided.

Pfleger, Brian Frederick; Begemann, Matthew Brett

2014-09-30T23:59:59.000Z

256

Separation Nanotechnology of Diethylenetriaminepentaacetic Acid...  

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

Nanotechnology of Diethylenetriaminepentaacetic Acid Bonded Magnetic Nanoparticles for Spent Nuclear Fuel. Separation Nanotechnology of Diethylenetriaminepentaacetic Acid Bonded...

257

Bacterial indole-3-acetic acid production: a key mediator of plant-microbe interactions between Phaseolus vulgaris and the foliar epiphyte Pantoea agglomerans 299R  

E-Print Network (OSTI)

and Xanthomonas campestris pv vesicatoria. Plant Physiology.and Xanthomonas campestris pv vesicatoria. Plant Physiology.P. syringae pv. tomato DC3000: plants unable to repress

Powell, Tracy Kathleen

2011-01-01T23:59:59.000Z

258

Discovery of Isoquinolinone Indole Acetic Acids as Antagonists of Chemoattractant Receptor Homologous Molecule Expressed on Th2 Cells (CRTH2) for the Treatment of Allergic Inflammatory Diseases  

Science Journals Connector (OSTI)

This compound had good in vitro and in vivo potency, low rates of metabolism, moderate permeability, and good oral bioavailability in rodents. ...

Neelu Kaila; Bruce Follows; Louis Leung; Jennifer Thomason; Adrian Huang; Alessandro Moretto; Kristin Janz; Michael Lowe; Tarek S. Mansour; Cedric Hubeau; Karen Page; Paul Morgan; Susan Fish; Xin Xu; Cara Williams; Eddine Saiah

2014-02-10T23:59:59.000Z

259

High-Density PhyloChip profiling of stimulated aquifer microbial communities reveals a complex response to acetate amendment  

SciTech Connect

There is increasing interest in harnessing the functional capacities of indigenous microbial communities to transform and remediate a wide range of environmental contaminants. Information about which community members respond to stimulation can guide the interpretation and development of remediation approaches. To comprehensively determine community membership and abundance patterns among a suite of samples associated with uranium bioremediation experiments we employed a high?density microarray (PhyloChip). Samples were unstimulated, naturally reducing, or collected during Fe(III) (early) and sulfate reduction (late biostimulation) from an acetate re?amended/amended aquifer in Rifle, Colorado, and from laboratory experiments using field?collected materials. Deep community sampling with PhyloChip identified hundreds?to?thousands of operational taxonomic units (OTUs) present during amendment, and revealed close similarity among highly enriched taxa from drill?core and groundwater well?deployed column sediment. Overall, phylogenetic data suggested stimulated community membership was most affected by a carryover effect between annual stimulation events. Nevertheless, OTUs within the Fe(III)? and sulfate?reducing lineages, Desulfuromonadales and Desulfobacterales, were repeatedly stimulated. Less consistent, co?enriched taxa represented additional lineages associated with Fe(III) and sulfate reduction (for example, Desulfovibrionales; Syntrophobacterales; Peptococcaceae) and autotrophic sulfur oxidation (Sulfurovum; Campylobacterales). These data imply complex membership among highly stimulated taxa, and by inference biogeochemical responses to acetate, a non?fermentable substrate.

Handley, Kim M.; Wrighton, Kelly C.; Piceno, Y. M.; Andersen, Gary L.; DeSantis, Todd; Williams, Kenneth H.; Wilkins, Michael J.; N'Guessan, A. Lucie; Peacock, Aaron D.; Bargar, John; Long, Philip E.; Banfield, Jillian F.

2012-04-13T23:59:59.000Z

260

Assessing the recycling potential of industrial wastewater to replace fresh water in concrete mixes: application of polyvinyl acetate resin wastewater  

Science Journals Connector (OSTI)

This study presents the use of industrial wastewater released from polyvinyl acetate resin manufacturing plant to totally replace the fresh water in concrete composites. Seventy-two laboratory prepared concrete composites were tested to investigate the effect of using various PVAW/C ratios of 0.30, 0.35, 0.40, and 0.45 on the slump, compressive strength, flexural strength, and dry density of the concrete mixes. Results indicated a slight to moderate increase in compressive strength and hard density values compared to those of the control concrete made with fresh water at 7 and 28 day curing. On the contrary, a reduction in the slump values of the PVAW–concrete was observed compared to the slump of the control mixes. However, the slump values increased with increasing the PVAW/C ratios. On the other hand, the waste material leaching test revealed that none of the PVAW toxic constituents was detected. The findings of this work would form basic information for recycling PVAW in concrete mixes and indicate a potential alternative for diminution the adverse effects on the environment posed by the hazardous effluent of the polyvinyl acetate resin industry.

Zainab Z. Ismail; Enas A. Al-Hashmi

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Performance improvement of phenyl acetate as propylene carbonate-based electrolyte additive for lithium ion battery by fluorine-substituting  

Science Journals Connector (OSTI)

Abstract Phenyl acetate (PA) is more stable and much cheaper than vinylene carbonate (VC), a commercial electrolyte additive for graphite anode of lithium ion battery, but its performance needs to be improved. In this paper, we report a new additive, 4-fluorophenyl acetate (4-FPA), which results from the fluorine-substituting of PA. The properties of the formed solid electrolyte interphase (SEI) by 4-FPA are investigated comparatively with PA by molecular energy level calculation, cyclic voltammetry, charge–discharge test, scanning electron microscopy, energy dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. It is found that the SEI formed by 4-FPA is more protective than PA, resulting in the improved cyclic stability of lithium ion battery: the capacity retention of LiFePO4/graphite cell after 90 cycles is 92% for 4-FPA but only 84% for PA. The fluorine in 4-FPA makes it more reducible than PA and the fluorine-containing reduction products of 4-FPA are incorporated into the SEI, which contributes to the improved performance.

Bin Li; Yaqiong Wang; Haibin Lin; Xianshu Wang; Mengqing Xu; Yating Wang; Lidan Xing; Weishan Li

2014-01-01T23:59:59.000Z

262

Reversible Acid Gas Capture  

SciTech Connect

Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

Dave Heldebrant

2009-08-01T23:59:59.000Z

263

Reversible Acid Gas Capture  

ScienceCinema (OSTI)

Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

Dave Heldebrant

2012-12-31T23:59:59.000Z

264

Synthesis of N-carbobenzoxy-L-valyl-L-valyl-4-amino-3-hydroxy-5-methylhexanoic acid  

E-Print Network (OSTI)

, and dried over sodium sulfate. The sol- vent was removed by evaporation in vacuo and the products isolated by silica gel chromatography, eluting with 25% ethyl acetate/hexane, to give the following results: Ethyl (38, 4S)-N-t-butyloxycarbonyl-4-amino-3... columns prepacked with silica gel 60 (EM Reagents). Amino acids were coupled using mixed anhydride coupling methods. ACKNOWLEDGMENTS The author is grateful to Dr, G. I. Glover for all the guidance and support he has provided, A special thanks to Dr, E...

Hicks, Gary Dean

1980-01-01T23:59:59.000Z

265

Sanders, J. E., and Merguerian, Charles, 1994b, The glacial geology of New York City and vicinity, p. 93-200 in A. I. Benimoff, ed., The Geology of Staten Island, New York, Field  

E-Print Network (OSTI)

Sanders, J. E., and Merguerian, Charles, 1994b, The glacial geology of New York City and vicinity Valley (the same direction as reported by Flint from the Lake Chamberlain Till in CT). In New York City and proceedings, The Geological Association of New Jersey, XI Annual Meeting, 296 p. John E. Sanders* and Charles

Merguerian, Charles

266

GELATIN SUBBED SLIDES (SOP-21) GELATIN SOLUTION  

E-Print Network (OSTI)

GELATIN SUBBED SLIDES (SOP-21) GELATIN SOLUTION · Warm 1000 ml dH2O to 70° C (Do not heat water. Solution may be stored in the refrigerator for up to l week. CLEANING SLIDES · Fill a staining dish with 1:1 mixture of 95 % (v/v) ethanol and glacial acetic acid. · Soak slides placed in large metal slide rack

Kleinfeld, David

267

Controlling acid rain  

E-Print Network (OSTI)

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

Fay, James A.

1983-01-01T23:59:59.000Z

268

Surface characterization of LaMnO{sub 3+{delta}} powder synthesized using poly(acrylic acid)  

SciTech Connect

The La/Mn ratio, specific surface area, and catalytic activity for CO oxidation on perovskite-type LaMnO{sub 3+{delta}} synthesized by firing gels with poly(acrylic acid) (PAA) were measured to characterize the LaMnO{sub 3+{delta}} surface. LaMnO{sub 3+{delta}} synthesized by gel firing with low PAA concentration had a large specific surface area, but a Mn ion content lower than that of LaMnO{sub 3+{delta}} synthesized using acetates. Increasing the PAA concentration or the firing temperature improved the surface state of LaMnO{sub 3+{delta}}. At 5 x 10{sup -2}M PAA, the catalytic activity was better than that of LaMnO{sub 3+{delta}} synthesized using acetates.

Taguchi, Hideki; Yoshioka, Hideaki; Nagao, Mahiko [Okayama Univ. (Japan)

1995-05-01T23:59:59.000Z

269

Effects of cathode modification using spin-coated lithium acetate on the performances of polymer bulk-heterojunction solar cells  

Science Journals Connector (OSTI)

In this report we show that the performances of polymer bulk-heterojunction solar cells were improved by inserting thin films of lithium acetate layers between the active layer and the cathode using a spin-coating process. Comparing with the device without the cathode modification significant enhancements of Voc (open circuit voltage) from 0.42?V to 0.55?V and device efficiency from 1.4% to 4.1% were achieved. X-ray and ultraviolet photoelectron spectroscopic studies indicate that both the improved damage tolerance of the active layer under the thermally evaporated metal and an n-type doping at the metal/organic interface play the crucial roles in the enhanced performances.

Liang Jiang; Aiyuan Li; Shizhao Zheng; King-Young Wong

2013-01-01T23:59:59.000Z

270

High-density PhyloChip profiling of stimulated aquifer microbial communities reveals a complex response to acetate amendment  

SciTech Connect

There is increasing interest in harnessing the functional diversity of indigenous microbial communities to transform and remediate a wide range of environmental contaminants. Understanding the response of communities to stimulation, including flanking taxa, presents important opportunities for optimizing remediation approaches. We used high-density PhyloChip microarray analysis to comprehensively determine community membership and abundance patterns amongst a suite of samples from U(VI) bioremediation experiments. Samples were unstimulated or collected during Fe(III) and sulfate reduction from an acetate-augmented aquifer in Rifle, Colorado, and from laboratory experiments using field-collected materials. Results showed the greatest diversity in abundant SRB lineages was present in naturally-reduced sediment. Desulfuromonadales and Desulfobacterales were consistently identified as the dominant Fe(III)- and sulfate-reducing bacteria (IRB and SRB) throughout acetate amendment experiments. Stimulated communities also exhibited a high degree of functional redundancy amongst enriched flanking members. Not surprisingly, competition for both sulfate and iron was evident amongst abundant taxa, but the distribution and abundance of these ancillary SRB (Peptococcaceae, Desulfovibrionales and Syntrophobacterales), and lineages containing IRB (excluding Desulfobacteraceae) was heterogeneous amongst sample types. Interesting, amongst the most abundant taxa, particularly during sulfate reduction, were Epsilonproteobacteria that perform microaerobic or nitrate-dependant sulfur oxidation, and a number of bacteria other than Geobacteraceae that may enzymatically reduce U(VI). Finally, in depth community probing with PhyloChip determined the efficacy of experimental approaches, notably revealing striking similarity amongst stimulated sediment (from drill cores and in-situ columns) and groundwater communities, and demonstrating that sediment-packed in-situ (down-well) columns served as an ideal method for subsurface biostimulation.

Handley, Kim M.; Wrighton, Kelly E.; Piceno, Y. M.; Anderson, Gary L.; DeSantis, Todd; Williams, Kenneth H.; Wilkins, Michael J.; N'Guessan, A. L.; Peacock, Aaron; Bargar, John R.; Long, Philip E.; Banfield, Jillian F.

2012-06-13T23:59:59.000Z

271

Complete oxidation of CO, ethanol, and ethyl acetate over copper oxide supported on titania and ceria modified titania  

SciTech Connect

Titania and titania modified with 3 and 12 {mu}mol Ce/m{sup 2} surface area of the titania were prepared and were used as supports for copper oxide. Preparations with 3 and 12 {mu}mol CuO{sub x}/m{sup 2} surface area of the support were tested for the combustion of CO, ethyl acetate, and ethanol. The results show that the Ce-doped titania surface is good as support for CuO{sub x} and that the cerium not only enhances the activity of the copper species, but also stabilizes the surface area of the TiO{sub 2} support in the presence of copper oxide. Additions of Al, K, and La are also found to stabilize the TiO{sub 2} support but, compared with Ce, these elements do not to the same extent enhance the activity of the copper species. Acetaldehyde is observed to ban an intermediate in the combustion of both ethanol and ethyl acetate over Cu-Ce-Ti-O catalysts. Since acetaldehyde is more harmful than any of the reactants and also is photochemically active, it is in applications important to assure that the combustion is complete. Cu-Ce-Ti-O catalysts show good performance not only for feeds without water vapor, but also for humid feeds. Although the concentrations of intermediates are affected by the addition of water, there is little effect on the temperature required for obtaining complete conversion to carbon dioxide and water. Characterization with XRD, FT-Raman, TPR, and XPS indicates that the dispersed copper species are in the form of patches or a bidimensional layer which interacts with the surface of the support. When the content of cerium and copper is low, other types of dispersed copper species are present, which possibly are monomers or dimers. The copper species are predominantly Cu{sup 2+} species.

Larsson, P.O. [Perstorp AB (Sweden)] [Perstorp AB (Sweden); Andersson, A. [Univ. of Lund (Sweden). Dept. of Chemical Engineering II] [Univ. of Lund (Sweden). Dept. of Chemical Engineering II

1998-10-01T23:59:59.000Z

272

Fermentation inhibitors and their recovery from acid wood hydrolyzates as chemicals of value  

SciTech Connect

The principal objective of this study was to demonstrate the technical feasibility of fermentation inhibition removal from acid hydrolyzates of lignocellulosic materials and recovery of the by-products of acid hydrolysis as chemicals of value. The acid hydrolyzates of mixed hardwoods were produced from the continuous flow demonstration unit (CFDU) at the University of California Forest Products Laboratory. Two separate liquid product streams were the prehydrolyzate (S1H) and the second stage hydrolyzate (S2H). Candida utilis NRRL Y-900 and Saccharomyces cerevisiae NRRL 2034 were used to monitor the fermentability of these two product streams, respectively. Two pretreatment methods were investigated in detail: flashing and solvent extraction. For the S1H, flashing was adequate to enable cell production with Candida utilis. The S2H rehired solvent extraction to ensure ethanolic fermentation at high concentrations of glucose (12% or higher). A solvent was selected for the extraction process and process flow designs were proposed to recycle the solvent and isolate commercial by-products, including furfural, methanol, acetic acid and, potentially, formic acid, levulinic acid and 5-hydroxymethylfurfural.

Tran, Hao Cao.

1986-01-01T23:59:59.000Z

273

Chlorophyll and acid rain  

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

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

274

Nucleic Acid Softwars  

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

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

275

Reactivity of Acid Generators  

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

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

276

(Acid rain workshop)  

SciTech Connect

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

Turner, R.S.

1990-12-05T23:59:59.000Z

277

Fatty Acid Carcass Mapping  

E-Print Network (OSTI)

FATTY ACID CARCASS MAPPING A Thesis by STACEY NICOLE TURK Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2008... Major Subject: Animal Science FATTY ACID CARCASS MAPPING A Thesis by STACEY NICOLE TURK Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

Turk, Stacey N.

2010-01-14T23:59:59.000Z

278

The utilization of tricarboxylic acid cycle acids and the uptake of succinic acid by Neurospora crassa  

E-Print Network (OSTI)

THE UTILIZATION OF TRICARBOXYLIC ACID CYCLE ACIDS AND THE UPTAKE OF SUCCINIC ACID BY NEUROSPORA CRASSA A Thesis by PATTI LYNN GILLILAND Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August 1978 Ma) or Subject: Microbiology THE UTILIZATION OF TRICARBOXYLIC ACID CYCLE ACIDS AND THE UPTAKE OF SUCCINIC ACID BY NEUROSPORA CRASSA A Thesis by PATTI LYNN GILLILAND Approved as to style and content by...

Gilliland, Patti Lynn

2012-06-07T23:59:59.000Z

279

Focus Sheet | Hydrofluoric Acid Health hazards of hydrofluoric acid  

E-Print Network (OSTI)

Focus Sheet | Hydrofluoric Acid Health hazards of hydrofluoric acid Hydrofluoric acid (HF characterized by weight loss, brittle bones, anemia, and general ill health. Safe use If possible, avoid working to exposures. #12;Focus Sheet | Hydrofluoric Acid Environmental Health and Safety Environmental Programs Office

Wilcock, William

280

Palladium-Acetate Catalyst for Regioselective Direct Arylation at C2 of 3-Furanyl or 3-Thiophenyl Acrylates with Inhibition of  

E-Print Network (OSTI)

1 Palladium-Acetate Catalyst for Regioselective Direct Arylation at C2 of 3-Furanyl or 3-Thiophenyl obtained in moderate to good yields using only 0.1 mol% of catalyst. Electron-withdrawing substituent activation proceed in moderate to good yields using Pd(PPh3)4 as the catalyst.2 Since this report

Boyer, Edmond

Note: This page contains sample records for the topic "glacial acetic acid" 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

Enhanced Induction of the Anchorage-independent Phenotype in Initiated Rat Tracheal Epithelial Cell Cultures by the Tumor Promoter 12-O-Tetradecanoylphorbol-13-acetate  

Science Journals Connector (OSTI)

...carioylphorbol-13-acetate; FBS, fe tal bovine serum; CFE, colony-forming efficiency; DMSO, dimethyl...exposure media was 0.2%. Cell Number and CFE Measurement. At Day 40, all cultures were...anchorage- independent growth by measuring CFE in soft agarose by a modified MacPherson...

Vernon E. Steele; Diane K. Beeman; Paul Nettesheim

1984-11-01T23:59:59.000Z

282

Formation of ZnS nanorods entrapped in polyacrylic acid (PAA) film  

Science Journals Connector (OSTI)

A simplistic approach for synthesis of zinc sulphide (ZnS) nanorods is reported. The synthesis of ZnS nanoparticles involved mixing of zinc acetate, sodium sulphide and acrylic acid in appropriate ratio at proper conditions, which formed the core. These nanoparticles were trapped in PAA by in-situ polymerization of acrylic acid and carefully casted into the film which resulted into entrapped nanorods in the polymer matrix. The nanoparticles as well as nanorods entrapped in PAA were characterized using high resolution scanning electron microscopy (SEM) for morphological investigations; energy dispersive X-ray analysis (EDAX) for composition and its crystalinity was checked using X-ray diffraction (XRD). The length of nanorods was in the range of 2–4 ?m and thickness between 50–200 nm.

Hemant P. Soni; Diptesh Parmar; Narendra Patel; Mukesh Chawda; Dhananjay Bodas

2008-01-01T23:59:59.000Z

283

Optical high acidity sensor  

DOE Patents (OSTI)

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

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

1997-01-01T23:59:59.000Z

284

Nucleic Acid Tools  

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

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

285

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

SciTech Connect

An alternative biomass-based route to benzoic acid from the renewable starting materials quinic acid and shikimic acid is described. Benzoic acid is obtained selectively using a highly efficient, one-step formic acid-mediated deoxygenation method.

Arceo, Elena; Ellman, Jonathan; Bergman, Robert

2010-05-03T23:59:59.000Z

286

Influence of surface defects and local structure on acid/base properties and oxidation pathways over metal oxide surfaces. Final report, June 1990--January 1997  

SciTech Connect

This final report covers work done during project period one and project period two. All the work in project period one was focused on the selective oxidation of oxygenated hydrocarbons over the SnO{sub 2}(110) single crystal surface. In project period two, the emphasis was on the acid/base properties of SnO{sub 2}(110) as well as two different Cu{sub 2}O single crystal surfaces. Prior to the summary of results, a description of these different surfaces is given as background information. Results are described for the dissociation and reaction of Bronsted acids (methanol, formic acid, water, formaldehyde, acetone, propene, acetic acid, and carbon monoxide). Results from project period two include: ammonia adsorption, CO{sub 2} adsorption, propene adsorption and oxidation, with tin oxides; complimentary work with copper oxides; and STM investigations.

Cox, D.F.

1997-12-31T23:59:59.000Z

287

Chlorine-36 in Water, Snow, and Mid-Latitude Glacial Ice of North America: Meteoric and Weapons-Tests Production in the Vicinity of the Idaho National Engineering and Environmental Laboratory, Idaho  

SciTech Connect

Measurements of chlorine-36 (36Cl) were made for 64 water, snow, and glacial-ice and -runoff samples to determine the meteoric and weapons-tests-produced concentrations and fluxes of this radionuclide at mid-latitudes in North America. The results will facilitate the use of 36Cl as a hydrogeologic tracer at the Idaho National Engineering and Environmental Laboratory (INEEL). This information was used to estimate meteoric and weapons-tests contributions of this nuclide to environmental inventories at and near the INEEL. The data presented in this report suggest a meteoric source 36Cl for environmental samples collected in southeastern Idaho and western Wyoming if the concentration is less than 1 x 10 7 atoms/L. Additionally, concentrations in water, snow, or glacial ice between 1 x 10 7 and 1 x 10 8 atoms/L may be indicative of a weapons-tests component from peak 36Cl production in the late 1950s. Chlorine-36 concentrations between 1 x 10 8 and 1 x 10 9 atoms/L may be representative of re-suspension of weapons-tests fallout airborne disposal of 36Cl from the INTEC, or evapotranspiration. It was concluded from the water, snow, and glacial data presented here that concentrations of 36Cl measured in environmental samples at the INEEL larger than 1 x 10 9 atoms/L can be attributed to waste-disposal practices.

L. DeWayne; J. R. Green (USGS); S. Vogt, P. Sharma (Purdue University); S. K. Frape (University of Waterloo); S. N. Davis (University of Arizona); G. L. Cottrell (USGS)

1999-01-01T23:59:59.000Z

288

EPR studies of phase transitions in cadmium calcium acetate hexahydrate as a function of different paramagnetic impurity-ion concentrations  

Science Journals Connector (OSTI)

The phase transition in cadmium calcium acetate hexahydrate (CCDAH) has been studied in detail with electron paramagnetic resonance (EPR) as a function of two different paramagnetic ion concentrations, namely, Cu2+ and Mn2+ ions. The change in transition temperature (122–143 K) with Cu2+ ion concentrations is explained in terms of mean-field theory and a soft vibrational mode of the -Ca-Cd1-xCux-Ca- chain along the c axis of the crystal. While the same theory can also explain our observed transition temperature (118–128 K) as a function of the Mn2+ ion concentration in this crystal, it does not explain why the limiting value of the transition temperature (i.e., 145 K) of CaCd1-xCux(CH3COO)4?6H2O as x tends to zero, is strikingly different from the limiting value of (?128.4 K) of CaCd1-xMnx(CH3COO)4?6H2O as x tends to zero. The same theory also successfully explains the absence of any phase transition in isomorphous CaCu(CH3COO)4?6H2O. The value of -dTc/dx is significantly higher with Mn2+ than with Cu2+ in CCDAH.

F. A. Oguama; H. Shields; D. K. De

1997-08-01T23:59:59.000Z

289

General matrix ENDOR line shape model applied to the methyl radical in lithium acetate dihydrate using single crystal data  

Science Journals Connector (OSTI)

A new general matrix ENDOR line shape model is tested against ENDOR data on the methyl radical in ??irradiated lithium acetate dihydrate. All parameters in the line shape model are determined or narrowly limited by experiment. These include the dipolar tensors of all protons within 5 Å of the methyl radical the microwave and radiofrequency magnetic fields and the electronic and nuclear spin–lattice and spin–spin relaxation times. The theoretical simulations agree satisfactorily with the experimental lineshape microwavemagnetic field dependence radiofrequency magnetic field dependence and angular variation of single crystalENDOR line intensities. The effective nuclear spin–lattice relaxation time is ?10 ms at 77 K and seems to be dominated by an angularly independent nuclear relaxation mechanism. The angularly dependent electron–nuclear dipolar interaction is found to be of much less importance for the ENDOR response. It is noted that the angular variation of ENDOR intensities is an important parameter to assess the nuclear relaxation mechanisms that control the ENDOR response. Data on cw and pulsed matrix ENDOR are compared and found to be similar. It is also shown that a model based on idealized line shape theory for disordered systems can satisfactorily reproduce matrix ENDOR line shapes. Both models allow calculation of the relative contributions from angularly independent and dependent ENDOR responses.

Larry Kevan; P. A. Narayana; K. Toriyama; M. Iwasaki

1979-01-01T23:59:59.000Z

290

Effect of lithium chloride on spectral, optical, thermal and mechanical behaviour of bis thiourea zinc acetate crystals  

Science Journals Connector (OSTI)

Single crystals of pure bis thiourea zinc acetate (BTZA) and lithium chloride (LiCl) doped BTZA have been synthesized and grown successfully from aqueous solutions by slow evaporation technique. The single crystals thus grown were characterized by different techniques such as single crystal XRD, AAS, FT-IR, UV–Vis, TG/DTA and SHG test. The single crystal XRD study proved that the dopant has not changed the structure of the parent crystal. The AAS study confirmed the presence of lithium in the doped crystal. The FTIR study ascertained the metal coordination of lithium chloride doped BTZA through thiourea. The optical behavior of the doped crystal has been examined by UV spectral analysis. Thermal studies TGA & DTA of the doped crystal have been investigated and found that the doped crystal is thermally more stable than the pure crystal. The SHG test using Nd: YAG Laser confirmed the NLO activity of the pure and doped crystal. The obtained results are presented and discussed.

L. Ruby Nirmala; J. Thomas Joseph Prakash

2012-01-01T23:59:59.000Z

291

Self-supported poly(methyl methacrylate–acrylonitrile–vinyl acetate)-based gel electrolyte for lithium ion battery  

Science Journals Connector (OSTI)

Self-supported gel polymer electrolyte (GPE) was prepared based on copolymer, poly(methyl methacrylate–acrylonitrile–vinyl acetate) (P(MMA–AN–VAc)). The copolymer P(MMA–AN–VAc) was synthesized by emulsion polymerization and the copolymer membrane was prepared through phase inversion. The structure and the performance of the copolymer, the membrane and the GPE were characterized by FTIR, NMR, SEM, XRD, DSC/TG, LSV, CA, and EIS. It is found that the copolymer was formed through the breaking of double bond CC in each monomer. The membrane has low crystallinity and has low glass transition temperature, 39.1 °C, its thermal stability is as high as 310 °C, and its mechanical strength is improved compared with P(MMA–AN). The GPE is electrochemically stable up to 5.6 V (vs. Li/Li+) and its conductivity is 3.48 × 10?3 S cm?1 at ambient temperature. The lithium ion transference number in the GPE is 0.51 and the conductivity model of the GPE is found to obey the Vogel–Tamman–Fulcher (VTF) equation.

Y.H. Liao; D.Y. Zhou; M.M. Rao; W.S. Li; Z.P. Cai; Y. Liang; C.L. Tan

2009-01-01T23:59:59.000Z

292

Acidizing of Sandstone Reservoirs Using HF and Organic Acids  

E-Print Network (OSTI)

Mud acid, which is composed of HCl and HF, is commonly used to remove the formation damage in sandstone reservoirs. However, many problems are associated with HCl, especially at high temperatures. Formic-HF acids have served as an alternative...

Yang, Fei

2012-10-19T23:59:59.000Z

293

A Car–Parrinello and path integral molecular dynamics study of the intramolecular lithium bond in the lithium 2-pyridyl- N -oxide acetate  

Science Journals Connector (OSTI)

Lithium bonding in lithium 2-pyridyl- N -oxide acetate has been investigated using classic Car–Parrinello molecular dynamics (CPMD) and the path integral approach [path integrals molecular dynamics (PIMD)]. The simulations have been performed in 300 K. Structures energies and lithium trajectories have been determined. The CPMD results show that the lithium atom is generally equidistant between heavy atoms in the ( O ? Li ? O ) bridge. Applying quantum effects through the PIMD leads to similar conclusion. The theoretical lithium 2-pyridyl- N -oxide acetate infrared spectrum has also been determined using the CPMD calculations. This shows very good agreement with available experimental results and reproduces well the broad low-frequency band observed experimentally. In order to gain deeper understanding of the nature of the lithium bonding topological analysis of the electron localization function has been applied.

Piotr Durlak; Zdzis?aw Latajka; S?awomir Berski

2009-01-01T23:59:59.000Z

294

Acid Placement in Acid Jetting Treatments in Long Horizontal Wells  

E-Print Network (OSTI)

In the Middle East, extended reach horizontal wells (on the order of 25,000 feet of horizontal displacement) are commonly acid stimulated by jetting acid out of drill pipe. The acid is jetted onto the face of the openhole wellbore as the drill pipe...

Sasongko, Hari

2012-07-16T23:59:59.000Z

295

Acid placement and coverage in the acid jetting process  

E-Print Network (OSTI)

Many open-hole acid treatments are being conducted by pumping acid through jetting ports placed at the end of coiled tubing or drill pipe. The filter-cake on the bore-hole is broken by the jet; the acid-soluble material is dissolved, creating...

Mikhailov, Miroslav I.

2009-05-15T23:59:59.000Z

296

Complexation of 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-7,14-diene dithiocyanate with nickel (II) acetate  

SciTech Connect

The complexation of nickel acetate with tetraaza involves deprotonation of protonated amine nitrogen to form neutral ligand coordinated to the nickel via the four nitrogen atom. The dication complex is paired with thiocyanate anions. The complex was characterized by elemental analysis, UV-VIS and FTIR spectroscopic method. The crystal structure of nickel complex characterized by X-Ray crystallography and adopts square planar geometry.

Ishak, Nur Iliyani Mohd; Yamin, Bohari M. [Department of Chemistry, Faculty of Science and Technology, UniversitiKebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia)

2013-11-27T23:59:59.000Z

297

Pantothenic acid biosynthesis in zymomonas  

DOE Patents (OSTI)

Zymomonas is unable to synthesize pantothenic acid and requires this essential vitamin in growth medium. Zymomonas strains transformed with an operon for expression of 2-dehydropantoate reductase and aspartate 1-decarboxylase were able to grow in medium lacking pantothenic acid. These strains may be used for ethanol production without pantothenic acid supplementation in seed culture and fermentation media.

Tao, Luan; Tomb, Jean-Francois; Viitanen, Paul V.

2014-07-01T23:59:59.000Z

298

Carboxylic acid sorption regeneration process  

DOE Patents (OSTI)

Carboxylic acids are sorbed from aqueous feedstocks into an organic liquid phase or onto a solid adsorbent. The acids are freed from the sorbent phase by treating it with aqueous alkylamine thus forming an alkylammonium carboxylate which is dewatered and decomposed to the desired carboxylic acid and the alkylamine.

King, C. Judson (Kensington, CA); Poole, Loree J. (Baton Rouge, LA)

1995-01-01T23:59:59.000Z

299

Carboxylic acid sorption regeneration process  

DOE Patents (OSTI)

Carboxylic acids are sorbed from aqueous feedstocks into an organic liquid phase or onto a solid adsorbent. The acids are freed from the sorbent phase by treating it with aqueous alkylamine thus forming an alkylammonium carboxylate which is dewatered and decomposed to the desired carboxylic acid and the alkylamine. 10 figs.

King, C.J.; Poole, L.J.

1995-05-02T23:59:59.000Z

300

The Acetate Switch  

Science Journals Connector (OSTI)

...the loss of the energy-producing PTA-ACKA...the acetyl-CoA pool or adding exogenous...by increasing the efficiency of an enzyme complex...intracellular acetylP pool. This should be...intracellular CoA pool, and the energy charge in ATP and...

Alan J. Wolfe

2005-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

The spatial distribution of organochlorine pesticides and halogenated flame retardants in the surface sediments of an Arctic fjord: The influence of ocean currents vs. glacial runoff  

Science Journals Connector (OSTI)

Abstract Selected organochlorine pesticides (OCs) and halogenated flame retardants (HFRs) were analyzed in surficial fjord sediments collected down the length of Kongsfjorden, Svalbard in the Norwegian high Arctic. Hexachlorocyclohexane (?-HCHs) was found to be the most abundant OC in the sediment, followed by BDE-209 > chlordane > ?-endosulfan > Dechlorane Plus (anti-DP)> trifluralin concentration ranges were high over the relatively small study area of the fjord (e.g. ?HCH: 7.2–100 pg g?1 dry weight (dw)), with concentrations broadly similar to, or lower than, measurements conducted in other parts of the Arctic. Concentrations of legacy OCs, including both HCH isomers and chlordane showed a decreasing trend from the outer, seaward end of the fjord to the inner, glacier end of the fjord. Conversely, sediment concentrations of ?- and ?-endosulfan (0.1–12.5 pg g?1 dw) increased from the outer fjord to the inner fjord. This contrasting pattern may be attributed to the influence of historical vs. contemporary sources of these chemicals to the fjord area, whereby the North Atlantic/West Spitzbergen oceanic current dominates the transport and input of the legacy OCs, whereas atmospheric deposition and meltwater runoff from the glaciers influence the inner fjord sediments for endosulfan. Interestingly, BDE-209 and Dechlorane Plus did not reveal any clear spatial trend. It is plausible that both glacial runoff and oceanic current end members are playing a role in introducing these chemicals to the fjord sediments. The relatively low fractional abundance of the syn-DP isomer (fsyn), however, indicates the long-range transport of this chemical to this Arctic site.

Yuxin Ma; Zhiyong Xie; Crispin Halsall; Axel Möller; Haizhen Yang; Guangcai Zhong; Minghong Cai; Ralf Ebinghaus

2015-01-01T23:59:59.000Z

302

Removal of phenols from acidic environment by horseradish peroxidase (HRP): Aqueous thermostabilization of HRP by polysaccharide additives  

Science Journals Connector (OSTI)

Abstract The bio-productive property of combinatorial polysaccharide additives (dextran and sodium alginate) on stability of horseradish peroxidase (HRP) for removal of phenols from acidic solutions was studied in this paper. The optimum pH range and temperature were determined for the stabilized enzyme as 3.6–5.4 and 65 °C, respectively. Enzyme stabilization experiments were conducted in the solution state without enzyme immobilization or encapsulation. The combinatorial polysaccharides were selected to construct an appropriate response surface methodology (RSM) for maximum HRP stabilization together with sodium acetate buffer to optimize the polysaccharide additives. The RSM results suggest 10.08% of dextran, 0.41% of sodium alginate and 64 mM sodium acetate buffer for maximum HRP stabilization at 65 °C with a predicted percentage residual activity of 60.01%. DSC results corroborated that the denaturation temperature (TD) values of stabilized HRP to be 30 °C higher than that of the native enzyme. The effect of pH on phenol removal for both native and stabilized HRP suggested that stabilized HRP exhibited high phenol removal activities even under acidic environment and successfully removed phenols.

Ellappan Kalaiarasan; Thayumanavan Palvannan

2014-01-01T23:59:59.000Z

303

Nucleic acid detection methods  

DOE Patents (OSTI)

The invention relates to methods for rapidly determining the sequence and/or length a target sequence. The target sequence may be a series of known or unknown repeat sequences which are hybridized to an array of probes. The hybridized array is digested with a single-strand nuclease and free 3{prime}-hydroxyl groups extended with a nucleic acid polymerase. Nuclease cleaved heteroduplexes can be easily distinguish from nuclease uncleaved heteroduplexes by differential labeling. Probes and target can be differentially labeled with detectable labels. Matched target can be detected by cleaving resulting loops from the hybridized target and creating free 3-hydroxyl groups. These groups are recognized and extended by polymerases added into the reaction system which also adds or releases one label into solution. Analysis of the resulting products using either solid phase or solution. These methods can be used to detect characteristic nucleic acid sequences, to determine target sequence and to screen for genetic defects and disorders. Assays can be conducted on solid surfaces allowing for multiple reactions to be conducted in parallel and, if desired, automated. 18 figs.

Smith, C.L.; Yaar, R.; Szafranski, P.; Cantor, C.R.

1998-05-19T23:59:59.000Z

304

Nucleic Acids Research, Vol. 19, No. 18 4949-4953 Direct introduction and transient expression of capped and  

E-Print Network (OSTI)

with lithium acetate (9) or by converting them to spheroplasts by enzyme treatment (10- 13). Recently

Kirkegaard, Karla

305

The influence of phenylacetic acid, ethephon, and cytokinin on the rooting of slash pine cuttings  

E-Print Network (OSTI)

20 Table 3. Analysis of variance table to determine the effect of phenyl- acetic acid on the rooting of slash pine cuttings. Source df Expected Mean Squares R (Reps) C (Clones) T (Treatments) RxC RxT CxT 21 21 a + SaRC + 32aR 2 2 2 2 2 2... a + SaRC + 32aC. 2 2 2 a + 4aCT + 4aRT + 164T 2 2 RC 2 2 ' '4'RT 2 2 a + 4a(T Error 63 21 squares were calculated us1ng the equation L = (a1NS1 2MS2 + . . . + akNSk) with a. as constants. The degrees of freedom associated with L were 1...

Hankins, Margaret Wendel

1983-01-01T23:59:59.000Z

306

Acidic gas capture by diamines  

DOE Patents (OSTI)

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

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

2011-05-10T23:59:59.000Z

307

Labradorite dissolution in aqueous organic acid solutions: an experimental study  

E-Print Network (OSTI)

in significant Al (up to 4 mmolal) in solution. Calculated activation energies of dissolution was different for different fluids and ranged between 18 KJ/mol for the acetate-oxalate solution to 42 KJ/mol for the acetate-citrate solution. Although, these values...

Ahmed, MD. Raquib Uddin

2012-06-07T23:59:59.000Z

308

In vitro regulation of porcine Leydig cell steroidogenesis by insulin-like growth factor I (IGF-I) and the phorbol ester 12-myristate-13- acetate (PMA)  

E-Print Network (OSTI)

IN VITRO REGULATION OP PORCINE LEYDIG CELL STEROIDOGENESIS BY INSULIN-LIKE GROWTH FACTOR I (IGF-I) AND THE PHORBOL ESTER 12-MYRISTATE-13-ACETATE (PMA) A Thesis by JOSEPH THOMAS FRENCH Submitted to the Graduate College of Texas A&M University... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1988 Major Subject: Physiology of Reproduction IN VITRO REGULATION OF PORCINE LEYDIG CELL STEROIDOGENESIS BY INSULIN-LIKE GROWTH FACTOR I (IGF-I) AND THE PHORBOL ESTER...

French, Joseph Thomas

2012-06-07T23:59:59.000Z

309

Separation of americium and europium from solutions of nitric and perchloric acid using dipicolinic acid diamides  

Science Journals Connector (OSTI)

Extraction of nitric acid, perchloric acid, americium, and europium with dialkyldiarylamides of 2,6-pyridinecarboxylic (dipicolinic) acid in polar fluorinated solvents (diluents) was analysed. Among the extrac...

M.Yu. Alyapyshev; V. A. Babain; I. V. Smirnov…

2006-01-01T23:59:59.000Z

310

Separation of americium and europium from solutions of nitric and perchloric acid using dipicolinic acid diamides  

Science Journals Connector (OSTI)

Extraction of nitric acid, perchloric acid, americium, and europium with dialkyldiarylamides of 2,6-pyridinecarboxylic (dipicolinic) acid in polar fluorinated solvents (diluents) was analysed. Among the extrac...

M. Yu. Alyapyshev; V. A. Babain; I. V. Smirnov…

2006-12-01T23:59:59.000Z

311

Ethylene Production from Linolenic Acid  

Science Journals Connector (OSTI)

... and Mapson1 have shown that linolenic 1 J acid may serve as a precursor of ethylene. The possi -bility that the ... . The possi -bility that the ethylene that is evolved from plants arises from linolenic acid was investigated by determining the relationship ...

F. B. ABELES

1966-04-02T23:59:59.000Z

312

Photochemical Studies on Xanthurenic Acid  

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

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

313

Separation of ?-Amino Acids Using a Series of Zwitterionic Sulfobetaine Exchangers  

Science Journals Connector (OSTI)

......chromatography using a lithium buffer system...sition. Often sodium acetate eluents with acetonitrile...Switzerland). Sodium acetate ( 99%) was purchased...Reagents for the synthesis of the zwitterionic...used. The sodium acetate eluents were at...blanks. Figure 1. Synthesis of the zwitterionic......

Lukas Sonnenschein; Andreas Seubert

2011-09-01T23:59:59.000Z

314

Treatment of acid mine wastewaters  

SciTech Connect

Acid mine drainage often results from the oxidation sulfide minerals to form sulfuric acid. As a consequence, high concentrations of metals in the both the suspended and dissolved state result from the low pH water. This paper discusses several of the more common treatment methods for acid mine drainage including the use of chemical precipitation agents, pH correction agents, filtration methods, and biodegradation methods. Advanced treatment technologies are also briefly described and include microfiltration, reverse osmosis, ion exchange, and electrodialysis.

Hayward, D.; Barnard, R.

1993-06-01T23:59:59.000Z

315

Naphthenic acid corrosion literature survey  

SciTech Connect

Naphthenic acid corrosion is a growing concern for refineries processing crudes containing high levels of naphthenic acid. Due to this concern initiatives in place to better understand the mechanism of corrosion for mitigating the corrosion. During the 1996 Fall Corrosion Group, organized existing literature relevant to the literature search. Committee Week, NACE International many refineries have and evaluate methods T-8 Refining Industry a task group, T-8-22, to perform a review and compilation of naphthenic acid corrosion. This paper provides a summary of the literature research.

Babaian-Kibala, E. [Nalco/Exxon Energy Chemicals, Sugar Land, TX (United States); Nugent, M.J. [Tosco Refining Co., Linden, NJ (United States)

1999-11-01T23:59:59.000Z

316

Asphaltene damage in matrix acidizing  

E-Print Network (OSTI)

This work addresses the problem of asphaltene deposition that occurs during acid treatments of oil reservoirs. Asphaltenes are present to some degree in most hydrocarbons. Due to the molecular weight of the components these asphaltenes are more...

Hinojosa, Roberto Antonio

2012-06-07T23:59:59.000Z

317

Factors controlling naphthenic acid corrosion  

SciTech Connect

A laboratory study was conducted to elucidate the influence of chemical and physical parameters on corrosion of type 1018 carbon steel (CS, UNS G10180) and 5% Cr-0.5% Mo steel in oils containing naphthenic acids (NAs) for application to crude oil refinery systems. Effects of test duration, temperature, and acid concentration were assessed for a range of single acids of varying carbon numbers and for NA mixtures in mineral oil (MO) and in heavy vacuum gas oil (HGVO). In addition, a limited study of the effect of hydrogen sulfide (H{sub 2}S) addition to the acid-oil mixture was conducted. Use of the total acid number (TAN) as a measure of corrosiveness of a crude oil was discredited further. For the same TAN value, molecular size and structure of the acid were shown to have an important influence. Tests conducted in HGVO showed lower corrosion rates than in MO, suggesting inhibition caused by S species in the oil or the steric hindrance of naphtheno-aromatic acids. In oil containing the mixture of NAs, the corrosion rate of type 1018 CS was lower than that for 5% Cr-0.5% Mo steel. The 0.1% H{sub 2}S that passed through the acid-oil mixtures had an inhibiting effect on corrosion. Predicting corrosiveness of a crude oil from the measurement of TAN, distribution of NA composition, and S content and form was particularly challenging. The simple tests used were informative, but further work will be required to establish a standard test method that can provide an adequate ranking of crudes.

Turnbull, A. [National Physical Lab., Teddington (United Kingdom); Slavcheva, E. [Bulgarian Academy of Sciences, Sofia (Bulgaria); Shone, B. [Ty Isa, Nr Mold (United Kingdom)

1998-11-01T23:59:59.000Z

318

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg.sub.2 Cl.sub.2 employing as the electrolyte solution a mixture of HCl and H.sub.2 O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H.sub.2 O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1989-01-01T23:59:59.000Z

319

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg[sub 2]Cl[sub 2] employing as the electrolyte solution a mixture of HCl and H[sub 2]O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H[sub 2]O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds. 3 figures.

Grossman, M.W.; George, W.A.

1991-06-18T23:59:59.000Z

320

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg.sub.2 Cl.sub.2 employing as the electrolyte solution a mixture of HCl and H.sub.2 O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H.sub.2 O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg.sub.2 Cl.sub.2 employing as the electrolyte solution a mixture of HCl and H.sub.2 O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H.sub.2 O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1991-01-01T23:59:59.000Z

322

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg[sub 2]Cl[sub 2] employing as the electrolyte solution a mixture of HCl and H[sub 2]O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H[sub 2]O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds. 3 figs.

Grossman, M.W.; George, W.A.

1989-11-07T23:59:59.000Z

323

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

DOE Patents (OSTI)

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

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

1995-07-04T23:59:59.000Z

324

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

DOE Patents (OSTI)

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

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

1995-01-01T23:59:59.000Z

325

Sandstone Acidizing Using Chelating Agents and their Interaction with Clays  

E-Print Network (OSTI)

Sandstone acidizing has been carried out with mud acid which combines hydrochloric acid and hydrofluoric acid at various ratios. The application of mud acid in sandstone formations has presented quite a large number of difficulties like corrosion...

George, Noble Thekkemelathethil 1987-

2013-01-09T23:59:59.000Z

326

New syntheses of aminoalkylphosphonic acids  

E-Print Network (OSTI)

NEW SYNTHESES OF AMINOALKYLPHOSPHON1C ACIDS A Thesis by John Frederick DeBardeleben, Jr. Su'bmitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 196$ Major Subject: Chemistry NEW SYNTHESES OF AMINOALKYLPHOSPHONIC ACIDS A Thesis BY John Frederick DeBardeleben, Jr. Approved as to style and content hy: (Chairman of Committee) iJ C wc+'. A-c-~-' & (Head of Department...

DeBardeleben, John Frederick

2012-06-07T23:59:59.000Z

327

Kinetic Study on the Acid-Catalyzed Hydrolysis of Cellulose to Levulinic Acid  

Science Journals Connector (OSTI)

A variety of interesting bulk chemicals is accessible by the acid-catalyzed hydrolysis of cellulose. An interesting example is levulinic acid, a versatile precursor for fuel additives, polymers, and resins. A detailed kinetic study on the acid-catalyzed ...

B. Girisuta; L. P. B. M. Janssen; H. J. Heeres

2007-02-13T23:59:59.000Z

328

Acid Catalysis in Modern Organic  

E-Print Network (OSTI)

catalyst for organic synthesis". That is the starting sentence of this book by Yamamoto and Ishihara, which follows their earlier book "Lewis Acids in Organic Synthesis (2000)", and covers the new developments book that should be available in every well-equipped chemistry library. It will certainly be helpful

Snyder, Scott A.

329

E-Print Network 3.0 - acid linoleic acid Sample Search Results  

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

FAs (linolenic, linoleic) - - monounsaturated FAs (oleic acid) - olive, canola - hydrogenation... Biol 458 Lecture 6 & 7 Fatty Acids 1 A. Introduction to acyl lipids...

330

Determinants of VIA (Visual Inspection of the Cervix After Acetic Acid Application) Positivity in Cervical Cancer Screening of Women in a Peri-Urban Area in Andhra Pradesh, India  

Science Journals Connector (OSTI)

...cervical biopsy) or for treatment. The infrastructure required for all these steps has not...an HPV DNA assay [Qiagen's Digene hybrid capture 2 (hc2) test] for detection...Positive 344 (14.8) 61 (17.73) Hybrid capture 2 ----Negative 2,091...

Haripriya Vedantham; Michelle I. Silver; B. Kalpana; C. Rekha; B.P. Karuna; K. Vidyadhari; S. Mrudula; Brigitte M. Ronnett; K. Vijayaraghavan; Gayatri Ramakrishna; Pavani Sowjanya; Shantha Laxmi; Keerti V. Shah; and Patti E. Gravitt

2010-05-01T23:59:59.000Z

331

Modelling and optimisation of batch distillation involving esterification and hydrolysis reaction systems. Modelling and optimisation of conventional and unconventional batch distillation process: Application to esterification of methanol and ethanol using acetic acid and hydrolysis of methyl lactate system.  

E-Print Network (OSTI)

??Batch distillation with chemical reaction when takes place in the same unit is referred to as batch reactive distillation process. The combination reduces the capital… (more)

Edreder, Elmahboub A.

2010-01-01T23:59:59.000Z

332

Treatment with the Tumor Necrosis Factor-?-Inducing Drug 5,6-Dimethylxanthenone-4-Acetic Acid Enhances the Antitumor Activity of the Photodynamic Therapy of RIF-1 Mouse Tumors  

Science Journals Connector (OSTI)

...dye laser (model 171/375; Spectra-Physics, Mountain View, CA) tuned to 630 nm...a Photofrin absorption maximum (DMXAA does not absorb light in the visible region...Vo-Dinh T. eds. . Biomedical Photonics Handbook, : 36-1-36-27, CRC Press Boca...

David A. Bellnier; Sandra O. Gollnick; Susan H. Camacho; William R. Greco; and Richard T. Cheney

2003-11-15T23:59:59.000Z

333

Chemical Hygiene and Safety Plan  

E-Print Network (OSTI)

lithium citrate . 919164 medroxyprogesterone acetate acetate, furfural Sulfides Sulfuric acid Acids Potassium chlorate, potassium perchlorate, potassium permanganate (similar compounds of light metals, such as sodium, lithium)

Ricks Editor, R.

2009-01-01T23:59:59.000Z

334

Vapour pressures, densities, and viscosities of the (water + lithium bromide + potassium acetate) system and (water + lithium bromide + sodium lactate) system  

Science Journals Connector (OSTI)

Measurements of thermophysical properties (vapour pressure, density, and viscosity) of the (water + lithium bromide + potassium acetate) system LiBr:CH3COOK = 2:1 by mass ratio and the (water + lithium bromide + sodium lactate) system LiBr:CH3CH(OH)COONa = 2:1 by mass ratio were measured. The system, a possible new working fluid for absorption heat pump, consists of absorbent (LiBr + CH3COOK) or (LiBr + CH3CH(OH)COONa) and refrigerant H2O. The vapour pressures were measured in the ranges of temperature and absorbent concentration from T = (293.15 to 333.15) K and from mass fraction 0.20 to 0.50, densities and viscosities were measured from T = (293.15 to 323.15) K and from mass fraction 0.20 to 0.40. The experimental data were correlated with an Antoine-type equation. Densities and viscosities were measured in the same range of temperature and absorbent concentration as that of the vapour pressure. Regression equations for densities and viscosities were obtained with a minimum mean square error criterion.

Antonio de Lucas; Marina Donate; Juan F. Rodríguez

2006-01-01T23:59:59.000Z

335

Poly vinyl acetate used as a binder for the fabrication of a LiFePO4-based composite cathode for lithium-ion batteries  

Science Journals Connector (OSTI)

ABSTRACT This paper describes a method for the preparation of composite cathodes for lithium ion-batteries by using poly vinyl acetate (PVAc) as a binder. \\{PVAc\\} is a non-fluorinated water dispersible polymer commonly used in a large number of industrial applications. The main advantages for using of this polymer are related to its low cost and negligible toxicity. Furthermore, since the \\{PVAc\\} is water processable, its use allows to replace the organic solvent, employed to dissolve the fluorinated polymer normally used as a binder in lithium battery technology, with water. In such a way it is possible to decrease the hazardousness of the preparation process as well as the production costs of the electrodes. In the paper the preparation, characterization and electrochemical performance of a LiFePO4 electrode based on \\{PVAc\\} as the binder is described. Furthermore, to assess the effect of the \\{PVAc\\} binder on the electrode properties, its performance is compared to that of a conventional electrode employing PVdF-HFP as a binder.

Pier Paolo Prosini; Maria Carewska; Cinzia Cento; Amedeo Masci

2014-01-01T23:59:59.000Z

336

Recovery of mercury from acid waste residues  

DOE Patents (OSTI)

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

Greenhalgh, Wilbur O. (Richland, WA)

1989-01-01T23:59:59.000Z

337

Studies On Advanced Lead-Acid Batteries.  

E-Print Network (OSTI)

??Subsequent to the studies on precursor lead-acid systems by Daniel, Grove and Sindesten, practical lead-acid batteries began with the research and inventions of Raymond Gaston… (more)

Martha, Surendra Kumar

2005-01-01T23:59:59.000Z

338

Modeling of Acid Fracturing in Carbonate Reservoirs  

E-Print Network (OSTI)

The acid fracturing process is a thermal, hydraulic, mechanical, and geochemical (THMG)-coupled phenomena in which the behavior of these variables are interrelated. To model the flow behavior of an acid into a fracture, mass and momentum balance...

Al Jawad, Murtada s

2014-06-05T23:59:59.000Z

339

Recovery of mercury from acid waste residues  

DOE Patents (OSTI)

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

Greenhalgh, W.O.

1987-02-27T23:59:59.000Z

340

Synthesis of Biodiesel via Acid Catalysis  

Science Journals Connector (OSTI)

Synthesis of Biodiesel via Acid Catalysis ... Biodiesel is synthesized via the transesterification of lipid feedstocks with low molecular weight alcohols. ... Nonetheless, acid-catalyzed processes could produce biodiesel from low-cost feedstocks, lowering production costs. ...

Edgar Lotero; Yijun Liu; Dora E. Lopez; Kaewta Suwannakarn; David A. Bruce; James G. Goodwin, Jr.

2005-01-25T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Chemical Additive Selection in Matrix Acidizing  

E-Print Network (OSTI)

critical detail of weak acid chemistry. One concern when using any acid in oilfield operations is the corrosion of well tubulars. Thus operators often choose to pump corrosion inhibitor, a chemical additive electrostatically attracted... in oilfield operations, each of which protects well tubulars using the same mechanism: by impeding the acid?s ability to diffuse to the tubing surface. Because of the unique attraction of corrosion inhibitor to the metal surface, and the corrosion inhibitor...

Weidner, Jason 1981-

2011-05-09T23:59:59.000Z

342

Reactions Between Water Soluble Organic Acids and Nitrates in...  

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

Between Water Soluble Organic Acids and Nitrates in Atmospheric Aerosols: Recycling of Nitric Acid and Formation of Reactions Between Water Soluble Organic Acids and Nitrates in...

343

Sandia National Laboratories: Due Diligence on Lead Acid Battery...  

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

Due Diligence on Lead Acid Battery Recycling March 23, 2011 Lead Acid Batteries on secondary containment pallet Lead Acid Batteries on secondary containment pallet In 2004, the US...

344

Hydrogen-Bond Acidic Polymers for Chemical Vapor Sensing. | EMSL  

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

Acidic Polymers for Chemical Vapor Sensing. Hydrogen-Bond Acidic Polymers for Chemical Vapor Sensing. Abstract: A review with 171 references. Hydrogen-bond acidic polymers for...

345

Unnatural reactive amino acid genetic code additions  

DOE Patents (OSTI)

This invention provides compositions and methods for producing translational components that expand the number of genetically encoded amino acids in eukaryotic cells. The components include orthogonal tRNAs, orthogonal aminoacyl-tRNA synthetases, orthogonal pairs of tRNAs/synthetases and unnatural amino acids. Proteins and methods of producing proteins with unnatural amino acids in eukaryotic cells are also provided.

Deiters, Alexander; Cropp, T. Ashton; Chin, Jason W.; Anderson, J. Christopher; Schultz, Peter G.

2014-08-26T23:59:59.000Z

346

Thermal Stability Of Formohydroxamic Acid  

SciTech Connect

The thermal stability of formohydroxamic acid (FHA) was evaluated to address the potential for exothermic decomposition during storage and its use in the uranium extraction process. Accelerating rate calorimetry showed rapid decomposition at a temperature above 65 {degree}?C; although, the rate of pressure rise was greater than two orders of magnitude less than the lower bound for materials which have no explosive properties with respect to transportation. FHA solutions in water and nitric acid did not reach runaway conditions until 150 {degree}?C. Analysis by differential scanning calorimetry showed that FHA melted at 67 {degree}?C and thermally decomposed at 90 {degree}?C with an enthalpy of -1924 J/g. The energics of the FHA thermal decomposition are comparable to those measured for aqueous solutions of hydroxylamine nitrate. Solid FHA should be stored in a location where the temperature does not exceed 20-25 {degree}?C. As a best practice, the solid material should be stored in a climate-controlled environment such as a refrigerator or freezer. FHA solutions in water are not susceptible to degradation by acid hydrolysis and are the preferred way to handle FHA prior to use.

Fondeur, F. F.; Rudisill, T. S.

2011-10-21T23:59:59.000Z

347

Radioiodinated fatty acid analogs for myocardial imaging  

SciTech Connect

Fatty acids are the preferred substrate for the normoxic heart. About sixty percent of the energy required by the myocardium is provided by fatty acid [beta]-oxidation. Many scientists have focused on the alterations in fatty acid metabolism in the ischemic heart for the development of radiolabelled fatty acids for functional imaging of the heart. Three main categories of compounds were synthesized: tetrazoles (1 and 2), glycidic and [alpha]-methylene acids (3-5), and analogs of oleic acid (6,7 and 7A). The tetrazole group has a similar pKa and size to that of a carboxyl group; however, such fatty acid analogs cannot undergo normal fatty acid metabolism. Glycidic and [alpha]-methylene analogs are potential irreversible inhibitors of fatty acid metabolism. Oleic acid analogs were investigated to assess the affect of stereochemical consequences on biodistribution. The key intermediates in the synthesis of the target compounds were [omega]-nitrophenyl alkylcarboxylic acids and alcohols, which were made using a variety of cross-coupling reactions. The Wittig reaction, which was used in the synthesis of tetrazole 1 and glycidic acid 3, gave low yields of the cross-coupled products. The remaining target compounds were synthesized by condensation of appropriate RCu (CN) ZnI and substituted benzyl bromides or by Pd[sup II] catalyzed cross-coupling of substituted arylhalides with suitable alkynes. The latter two reactions produced much higher yields of the desired products. All of the target compounds were radiolabeled with [sup 125]I by various Cu(I) catalyzed radioiodine exchange procedures and were then subjected to tissue biodistribution (TD) studies in rats. Except for the 15-(4-iodophenyl)-2-methylene-pentadecanoic acid (5), all of the fatty acid analogs failed to surpass clinically-used 15-(4-iodophenyl)pentadecanoic acid (IPPA) in their ability to be taken up and retained by the rat myocardium.

Ruyan, M.K.

1993-01-01T23:59:59.000Z

348

E-Print Network 3.0 - amino acids bcaa Sample Search Results  

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

systems in bovine mammary... . Linzell. 1974. The metabolism of glucose, acetate, lipids and amino ... Source: Bequette, Brian J. - Department of Animal and Avian Sciences,...

349

E-Print Network 3.0 - amino acid bcaa Sample Search Results  

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

systems in bovine mammary... . Linzell. 1974. The metabolism of glucose, acetate, lipids and amino ... Source: Bequette, Brian J. - Department of Animal and Avian Sciences,...

350

Acid Fracture and Fracture Conductivity Study of Field Rock Samples  

E-Print Network (OSTI)

Acid fracturing is a well stimulation strategy designed to increase the productivity of a producing well. The parameters of acid fracturing and the effects of acid interaction on specific rock samples can be studied experimentally. Acid injection...

Underwood, Jarrod

2013-11-15T23:59:59.000Z

351

Micro-electro-mechanical systems phosphoric acid fuel cell  

DOE Patents (OSTI)

A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte.

Sopchak, David A. (Livermore, CA); Morse, Jeffrey D. (Martinez, CA); Upadhye, Ravindra S. (Pleasanton, CA); Kotovsky, Jack (Oakland, CA); Graff, Robert T. (Modesto, CA)

2010-12-21T23:59:59.000Z

352

Micro-electro-mechanical systems phosphoric acid fuel cell  

DOE Patents (OSTI)

A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte.

Sopchak, David A. (Livermore, CA); Morse, Jeffrey D. (Martinez, CA); Upadhye, Ravindra S. (Pleasanton, CA); Kotovsky, Jack (Oakland, CA); Graff, Robert T. (Modesto, CA)

2010-08-17T23:59:59.000Z

353

Common amino acid domain among endopolygalacturonases of ascomycete fungi.  

Science Journals Connector (OSTI)

...How- ever, amino acid compositions of homogeneous PGs appear...Mugnier (Rhone-Poulenc Agrochemical Co., France). C. lindemuthianum...Pharmacia). Amino acid composition. Amino acid analysis was...chromatography. amino acid compositions of the three purified materials...

J P Keon; G Waksman

1990-08-01T23:59:59.000Z

354

The Distribution Coefficients and Gasification Ratios of [1,2-{sup 14}C] Sodium Acetate for Various Paddy Soils in Japan  

SciTech Connect

For appropriate safety assessment of the disposal of TRU waste, distribution coefficients (K{sub d}) and gasification ratios of {sup 14}C labeled [1, 2-{sup 14}C] sodium acetate ({sup 14}C-NaOAc) were determined by batch sorption tests for 85 Japanese paddy soil samples. The soil studied were from four soil types: Andsol; Gley; Gray lowland; and Yellow. The range of K{sub d} values for all soil samples was from 7.5 to 295.2 mL g{sup -1}, and the mean value was 105.6 mL g{sup -1}. This mean value was higher than that of previous study (1). The high K{sub d} values of the present study could be a result of the properties of the paddy soils. The comparison of K{sub d} values by each soil type revealed statistically significant difference between Andsol and Gray lowland soils (P < 0.05). The soil type was one of the factors affecting partitioning of {sup 14}C-NaOAc. Gasification ratios ranged from 29.1% to 83.3%, and its mean value was 66.4% of the total {sup 14}C-NaOAc added. These results suggest that most of the radiocarbon in {sup 14}C-NaOAc will be released from soil into the air as gases. The gasification ratio between soil types was also compared, but no statistically significant difference was found. Gas production may be controlled by other than physicochemical properties of soil, for example by factors such as bacterial community. In addition, both the K{sub d} values and the gasification ratios for Gley soil were decreased according to the increase in pH although the underlaying mechanisms for this observation are not clear. (authors)

Ishii, N.; Takeda, H.; Uchida, S. [Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, Inage-ku, Chiba-shi (Japan)

2008-07-01T23:59:59.000Z

355

Interaction modes between heavy metal ions and water-soluble polymers. 2. Spectroscopic and magnetic reexamination of the aqueous solutions of cupric ions and poly(acrylic acid)  

SciTech Connect

The interaction between cupric ions and poly(acrylic acid) (PAA) in aqueous solutions has been reexamined by EPR, magnetic susceptibility, and optical absorption. Cupric ions exist in solutions at pH < 3 as ordinary hydrated ions, and in the pH range 3-8, two mononuclear complexes with carboxyl groups of PAA are formed in equilibrium with other complex species; the two complexes have the same coordination structures as Cu(OAc)/sup +/ and Cu(OAc)/sub 2/, where OAc/sup -/ denotes acetate anion. Around pH 4, two slightly different binuclear copper(II) complexes of the cupric acetate type are formed in high yields; at (PAA polymer residue)/(Cu/sup 2 +/) less than or equal to 10, about 90% of the cupric ions form such binuclear complexes. At pH > 6, Cu(OH)/sub 2/ is gradually formed and complex species other than Cu(OH)/sub 2/ finally disappear at pH > 9. Cu(OH)/sub 2/ does not deposit but remains in solution by hydrophobic interaction with PAA, as in the case with poly(vinyl alcohol).

Yokoi, H.; Kawata, S.; Iwaizumi, M.

1986-06-11T23:59:59.000Z

356

Acetate metabolism in cancer cells  

E-Print Network (OSTI)

Macromolecule biosynthesis is required to duplicate cell components and support proliferation. Studies examining the nutrients used by cancer cells have focused on the contribution of glucose and glutamine carbon for ...

Hosios, Aaron M

2014-01-01T23:59:59.000Z

357

Development Of Ion Chromatography Methods To Support Testing Of The Glycolic Acid Reductant Flowsheet In The Defense Waste Processing Facility  

SciTech Connect

Ion Chromatography (IC) is the principal analytical method used to support studies of Sludge Reciept and Adjustment Tank (SRAT) chemistry at DWPF. A series of prior analytical ''Round Robin'' (RR) studies included both supernate and sludge samples from SRAT simulant, previously reported as memos, are tabulated in this report.2,3 From these studies it was determined to standardize IC column size to 4 mm diameter, eliminating the capillary column from use. As a follow on test, the DWPF laboratory, the PSAL laboratory, and the AD laboratory participated in the current analytical RR to determine a suite of anions in SRAT simulant by IC, results also are tabulated in this report. The particular goal was to confirm the laboratories ability to measure and quantitate glycolate ion. The target was + or - 20% inter-lab agreement of the analyte averages for the RR. Each of the three laboratories analyzed a batch of 12 samples. For each laboratory, the percent relative standard deviation (%RSD) of the averages on nitrate, glycolate, and oxalate, was 10% or less. The three laboratories all met the goal of 20% relative agreement for nitrate and glycolate. For oxalate, the PSAL laboratory reported an average value that was 20% higher than the average values reported by the DWPF laboratory and the AD laboratory. Because of this wider window of agreement, it was concluded to continue the practice of an additional acid digestion for total oxalate measurement. It should also be noted that large amounts of glycolate in the SRAT samples will have an impact on detection limits of near eluting peaks, namely Fluoride and Formate. A suite of scoping experiments are presented in the report to identify and isolate other potential interlaboratory disceprancies. Specific ion chromatography inter-laboratory method conditions and differences are tabulated. Most differences were minor but there are some temperature control equipment differences that are significant leading to a recommendation of a heated jacket for analytical columns that are remoted for use in radiohoods. A suggested method improvement would be to implement column temperture control at a temperature slightly above ambient to avoid peak shifting due to temperature fluctuations. Temperature control in this manner would improve short and longer term peak retention time stability. An unknown peak was observed during the analysis of glycolic acid and SRAT simulant. The unknown peak was determined to best match diglycolic acid. The development of a method for acetate is summaraized, and no significant amount of acetate was observed in the SRAT products tested. In addition, an alternative Gas Chromatograph (GC) method for glycolate is summarized.

Wiedenman, B. J.; White, T. L.; Mahannah, R. N.; Best, D. R.; Stone, M. E.; Click, D. R.; Lambert, D. P.; Coleman, C. J.

2013-10-01T23:59:59.000Z

358

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

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

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

1996-01-01T23:59:59.000Z

359

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

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

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

1999-10-12T23:59:59.000Z

360

Testing of organic acids in engine coolants  

SciTech Connect

The effectiveness of 30 organic acids as inhibitors in engine coolants is reported. Tests include glassware corrosion of coupled and uncoupled metals. FORD galvanostatic and cyclic polarization electrochemistry for aluminum pitting, and reserve alkalinity (RA) measurements. Details of each test are discussed as well as some general conclusions. For example, benzoic acid inhibits coupled metals well but is ineffective on cast iron when uncoupled. In benzoic acid inhibits coupled metals well but is ineffective on cast iron when uncoupled. In general, the organic acids provide little RA when titrated to a pH of 5.5, titration to a pH of 4.5 can result in precipitation of the acid. Trends with respect to acid chain length are reported also.

Weir, T.W. [ARCO Chemical Co., Newtown Square, PA (United States)

1999-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Waste acid recycling via diffusion dialysis  

SciTech Connect

Inorganic acids are commonly used for surface cleaning and finishing of metals. The acids become unuseable due to contamination with metals or diluted and weakened. Diffusion dialysis has become a way to recover the useable acid and allow separation of the metals for recovery and sale to refineries. This technique is made possible by the use of membranes that are strong enough to withstand low ph and have long service life.

Steffani, C.

1995-05-26T23:59:59.000Z

362

Organic Phosphoric Acid of the Soil.  

E-Print Network (OSTI)

TEXAS AGRICULTURAL EXPERIMENT STATIONS BULLETIN NO. +6CT /36 CHEMICAL SECTION, FEBRUARY, 191 1 I TECHNICAL BULLETIN Organic Phosphoric Acid of the Soil BY G. S. FRAPS, Chemist POSTOFFICE College Station, Brazos County, 'Texas. ,\\ustin... . ................................................ introduction 5 .............................. hmmonia-Soluble Phosphoric Acid 5 ................ Solubility of Phosphates in Ammonia 6 I Fixation of Phosphoric Acid from Ammonia .......... 7 Effect of Ratio of Soil to Solvent in Extraction of Phos- I I...

Fraps, G. S. (George Stronach)

1911-01-01T23:59:59.000Z

363

Carboxylic acid accelerated formation of diesters  

DOE Patents (OSTI)

This invention pertains to accelerating the rate of formation of 1,1-dicarboxylic esters from the reaction of an aldehyde with a carboxylic acid anhydride or a ketene in the presence of a non-iodide containing a strong Bronsted acid catalyst by the addition of a carboxylic acid at about one bar pressure and between about 0 and 80 C in the substantial absence of a hydrogenation or carbonylation catalyst.

Tustin, G.C.; Dickson, T.J.

1998-04-28T23:59:59.000Z

364

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

365

The role of the acquisition methods in the analysis of natural and synthetic steroids and cholic acids by gas chromatography–mass spectrometry  

Science Journals Connector (OSTI)

An exhaustive GC–MS acquisition study was performed, for the simultaneous analysis of natural and synthetic steroids and cholic acids (in order to insert them into the last tierce of our multiresidue analysis system), such as androsterone, ?-estradiol, transdehydroandro-sterone, transdehyroandrosterone, mestranol, dihydrotestosterone, ethinylestradiol, testosterone, norethisterone, estriol, 4-androstene-3,17-dione, gestodene, levonorgestrel, etonogestrel, coprostanol, progesterone, cholesterol, medroxyprogesterone-acetate, lithocholic acid, stigmasterol, cholic acid, chenodeoxycholic acid, ?-sitosterol, ursodeoxycholic acid, 3-hydroxy-7-ketocholic acid and dehydrocholic acid, in total 26 compounds. As novelties to the field, for the trimethylsilyl (TMS) oxime ether/ester derivatives of steroids and cholic acids, at first, a tandem mass spectrometric (MS/MS), multiple reaction monitoring (MRM) type acquisition method has been developed in a single run; also for the first time, the three acquisition techniques, the full scan (FS), the selective ion monitoring (SIM), in our case the multiple ion monitoring (MIM) and the currently optimized MRM methods, have been compared; all three, in parallel, under strictly the same derivatization/instrumental conditions, both in matrix free solutions and municipal wastewater from two Hungarian wastewater treatment plants (WWTPs). Critical evaluation of the three acquisition protocols was collated on their analytical performances and validated under the same conditions. The data of six point calibration curves for FS, MIM and MRM methods, showed that both R2 (0.9995, 0.9858, 0.9975) and RSD (5.3, 5.8, 5.0), for two parallel derivatizations, each injected three times, proved to be independent of the acquisition processes. Whereas, for the method limit of quantification (LOQ) and the instrument limit of quantification (ILQ) values showed considerable differences. LOQ data, were decreasing in the FS, MIM, MRM line (expressed in ng/L), for all steroids and cholic acids. The same trend was determined in terms of the ILQ values. The practical utility of the optimized acquisition techniques was confirmed by the quantitation of the steroids and cholic acids contents of wastewater samples. Results confirmed the importance of the MRM acquisition method, even in comparison to the MIM one: with particular interest in selected cases: avoiding the extreme overestimation of the ?-estradiol (156–1325%) and that of the ethinylestradiol (582–831%) concentrations in the wastewater samples.

N. Andrási; A. Helenkár; A. Vasanits-Zsigrai; Gy. Záray; I. Molnár-Perl

2011-01-01T23:59:59.000Z

366

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.

367

Biomedical Application of Hyaluronic Acid Nanoparticles  

E-Print Network (OSTI)

Hyaluronic acid (HA) is a naturally occurring biodegradable polymer with a variety of applications in medicine including tissue engineering, dermatological fillers, and viscosupplementation for osteoarthritis treatment. ...

Fakhari, Amir

2012-05-31T23:59:59.000Z

368

A Grape ASR Protein Involved in Sugar and Abscisic Acid Signaling  

Science Journals Connector (OSTI)

...i.e., 50- and 100-fold molar excess). The free DNA probe (Figure 8B, lane...reporter constructs (5 mug each) using a lithium acetate protocol (Geitz and Woods, 1993...Highly efficient transformation with lithium acetate. In Molecular Genetics of Yeast...

Birsen �akir; Alice Agasse; Cécile Gaillard; Amélie Saumonneau; Serge Delrot; Rossitza Atanassova

2003-08-08T23:59:59.000Z

369

E-Print Network 3.0 - acid trisodium salt Sample Search Results  

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

tri-sodium citrate dihydrate 0.1 M MembFac02 zinc acetate dihydrate 0... .1 M MembFac14 iso-propanol (IPA) 10% vv MembFac02 sodium acetate trihydrate 0.1 M MembFac14...

370

Supporting Information A dipicolinic acid tag for rigid lanthanide tagging of proteins and paramagnetic  

E-Print Network (OSTI)

the resulting suspension was filtered. The filtrate was extracted with ethyl acetate (4 x 50 ml), the organic. The resulting dark solution was diluted with ethyl acetate (40 ml), washed with water (2 x 20 ml) and 3 M,6-Dimethoxycarbonyl-4-bromomethylpyridine (3). Lithium bromide (212 mg, 2.44 mmol) was added to a solution

Otting, Gottfried

371

Nucleic Acid Standards - Program List  

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

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

372

Nucleic Acid Standards - Refinement Parameters  

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

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

373

E-Print Network 3.0 - acid eicosapentaenoic acid Sample Search...  

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

Sample search results for: acid eicosapentaenoic acid Page: << < 1 2 3 4 5 > >> 1 Fish or Fish Oil in the Diet and Heart Attacks MAURICE E. STANSBY Summary: . Further...

374

E-Print Network 3.0 - acids eicosapentaenoic acid Sample Search...  

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

Sample search results for: acids eicosapentaenoic acid Page: << < 1 2 3 4 5 > >> 1 Fish or Fish Oil in the Diet and Heart Attacks MAURICE E. STANSBY Summary: . Further...

375

Organic acid-tolerant microorganisms and uses thereof for producing organic acids  

DOE Patents (OSTI)

Organic acid-tolerant microorganisms and methods of using same. The organic acid-tolerant microorganisms comprise modifications that reduce or ablate AcsA activity or AcsA homolog activity. The modifications increase tolerance of the microorganisms to such organic acids as 3-hydroxypropionic acid (3HP), acrylic acid, and propionic acid. Further modifications to the microorganisms such as increasing expression of malonyl-CoA reductase and/or acetyl-CoA carboxylase provide or increase the ability of the microorganisms to produce 3HP. Methods of generating an organic acid with the modified microorganisms are provided. Methods of using acsA or homologs thereof as counter-selectable markers include replacing acsA or homologs thereof in cells with genes of interest and selecting for the cells comprising the genes of interest with amounts of organic acids effective to inhibit growth of cells harboring acsA or the homologs.

Pfleger, Brian Frederick; Begemann, Matthew Brett

2014-05-06T23:59:59.000Z

376

Catalytic transformations of cellulose and its derived carbohydrates into 5-hydroxymethylfurfural, levulinic acid, and lactic acid  

Science Journals Connector (OSTI)

The catalytic transformation of cellulose into key building-block or platform chemicals such as 5-hydoxymethylfurfural (HMF), levulinic acid, and lactic acid under mild conditions, has attracted much attention...

Weiping Deng; Qinghong Zhang; Ye Wang

2014-12-01T23:59:59.000Z

377

Yeast display evolution of a kinetically efficient 13-amino acid substrate for lipoic acid ligase  

E-Print Network (OSTI)

Escherichia coli lipoic acid ligase (LplA) catalyzes ATP-dependent covalent ligation of lipoic acid onto specific lysine side chains of three acceptor proteins involved in oxidative metabolism. Our lab has shown that LplA ...

Puthenveetil, Sujiet

378

2006 DOE Hydrogen Program Poly (p-phenylene Sulfonic Acid)s with...  

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

2006 DOE Hydrogen Program Poly (p-phenylene Sulfonic Acid)s with Frozen-in Free Volume for use in High Temperature Fuel Cells 2006 DOE Hydrogen Program Poly (p-phenylene Sulfonic...

379

The Arabidopsis hrl1 mutation reveals novel overlapping roles for salicylic acid, jasmonic acid and ethylene  

E-Print Network (OSTI)

and ethylene signalling in cell death and defence against pathogens Sendil K. Devadas1 , Alexander Enyedi2 molecules: salicylic acid (SA), jasmonic acid (JA) and ethylene (ET). The hrl1 (hypersensitive response

Raina, Ramesh

380

Effect of dietary cysteine, methionine, and sterculic acid on fatty acid distribution in rat adipose tissue  

E-Print Network (OSTI)

EFFECT OF DIETARY CYSTEINE, MFTHIONINE, AND STERCULIC ACID ON FATTY ACID DISTRIBUTION IN RAT ADIPOSE TISSUE A Thesis By MARY FRANCES BROTZE Submitted to the Graduate College of the Texas A(M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January 1968 Major Subject: BIOCHEMISTRY EFFECT OF DIETARY CYSTEINE, METHIONINE, AND STERCULIC ACID ON FATTY ACID DISTRIBUTION IN RAT ADIPOSE TISSUE A Thesis MAaY FRANCES BRC ~ '!E Approved as to style...

Brotze, Mary Frances

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

Further Investigation of Fluoboric Acid in Sandstone Acidizing Using ^(11)B and ^(19)F NMR  

E-Print Network (OSTI)

Although fluoboric acid (HBF_(4)) has long been known as one of the low-damaging acid treatments for clayey sandstone formations, little is known of its chemistry which could explain the mixed results of fluoboric acid in actual field application. A...

Pituckchon, Arpajit

2014-05-01T23:59:59.000Z

382

Effect of defaunation and amino acid supplementation on growth and amino acid balance in growing sheep  

E-Print Network (OSTI)

, and the wool growth. The supplementation with protected amino acids may increase the growth rate and may lead and the addition of protected methionine and lysine on animal growth and amino acids digestibility in the body week for 9 weeks. Amino acids were determined in feed, blood, wool and feces in order to calculate

Paris-Sud XI, Université de

383

Nitrates and Prussic Acid in Forages  

E-Print Network (OSTI)

When nitrates and prussic acid accumulate in forage, the feed may not be safe for livestock consumption. Learn the symptoms of nitrate and prussic acid poisoning and which plants are most likely to pose a risk to livestock. Also learn sampling...

Provin, Tony; Pitt, John L.

2003-01-06T23:59:59.000Z

384

Naphthenic acid corrosion by Venezuelan crudes  

SciTech Connect

Venezuelan crudes can contain levels of naphthenic acids that cause corrosion in distillation units designed for sweet crudes. This naphthenic acid corrosion can be mitigated in several ways, the most common of which is selective alloying. This paper will provide information from field experience on how various refineries worldwide have upgraded materials to run Venezuelan crudes in a cost effective way.

Hopkinson, B.E.; Penuela, L.E. [Lagoven, S.A., Judibana (Venezuela). Amuay Refinery

1997-09-01T23:59:59.000Z

385

Naphthenic acid corrosion in crude distillation units  

SciTech Connect

This paper summarizes corrosion experience in crude distillation units processing highly naphthenic California crude oils. Correlations have been developed relating corrosion rates to temperature and total acid number. There is a threshold acid number in the range of 1.5 to 2 mg KOH/g below which corrosion is minimal. High concentrations of hydrogen sulfide may raise this threshold value.

Piehl, R.L.

1988-01-01T23:59:59.000Z

386

Molecular Simulation Study of Diverting Materials Used in Matrix Acidizing  

E-Print Network (OSTI)

of metal acetate, metal hydrate and square valency divided by ionic radius of the cation .............................. 224 Figure C.4 3D optimized molecular structure with Ca?O and hydrogen bond (OH?O) are connected for All calculated using B3LYP/6...

Sultan, Abdullah S.

2010-10-12T23:59:59.000Z

387

Arginine and Conjugated Linoleic Acid Reduce Fat Mass in Rats  

E-Print Network (OSTI)

????????????????????.. 3 Nitric oxide (NO)????????????????????... 3 NOS synthesis by iNOS and obesity?????????????. 4 Stearoyl CoA desaturase?????????????????? 5 Conjugated linoleic acid?????????????????? 5 MATERIALS... on a liquid scintillation counter. 12 Fatty acid analysis Fatty acid composition in liver and plasma was determined using a fatty acid methylation procedure (FAME). Fatty acids were extracted using Folch et al (38) methods. Methylation...

Nall, Jennifer L.

2010-10-12T23:59:59.000Z

388

Understanding Beef Cattle Efficiency: I) Understanding Physiological and Digestive Factors Affecting Residual Feed Intake and II) Tannin Supplementation: Effects on Animal Performance, Fermentation, and Carcass Traits  

E-Print Network (OSTI)

:P Acetate : propionate ratio Ac Acetate ADF Acid detergent fiber ADFD Acid detergent fiber digestibility ADG Average daily gain ADIA Acid detergent insoluble ash AIA Acid insoluble ash APA Ammonia producing activity BES...

Krueger, Wimberley K.

2010-10-12T23:59:59.000Z

389

Experimental Study of Acid Fracture Conductivity of Austin Chalk Formation  

E-Print Network (OSTI)

Acid fracture conductivity and the effect of key variables in the etching process during acid fracturing can be assessed at the laboratory scale. This is accomplished by using an experimental apparatus that simulates acid injection fluxes comparable...

Nino Penaloza, Andrea

2013-05-01T23:59:59.000Z

390

Experimental High Velocity Acid Jetting in Limestone Carbonates  

E-Print Network (OSTI)

Acid jetting is a well stimulation technique that is used in carbonate reservoirs. It typically involves injecting acid down hole at high flow rates through small orifices which cause high velocities of acid to strike the borehole wall...

Holland, Christopher

2014-04-30T23:59:59.000Z

391

Investigations of amino acid-based surfactants at liquid interfaces  

E-Print Network (OSTI)

Herein are presented collective studies of amino acid-based surfactants, also known as lipoamino acids, at liquid interfaces. Chapter III describes an investigation of domain morphology of N-Stearoylglutamic acid (N-SGA) Langmuir monolayers...

Yang, Dengliang

2005-11-01T23:59:59.000Z

392

Naphthenic acid corrosion in refinery settings  

SciTech Connect

Naphthenic acid corrosion has been a problem in the refining industry for many years. Recently interest in this problem has grown because crudes that contain naphthenic acid are being recovered from areas which were not known to produce this type of crude, such as china, India, and Africa. New techniques for identifying naphthenic acid corrosion and chemical treatments for preventing this attack are presented. Refinery case studies include stream analysis, failure analysis, and inhibitor use. Laboratory tests to show the effect of hydrogen sulfide and phosphorus-based inhibitors are discussed.

Babaian-Kibala, E. (Nalco Chemical Co., Sugar Land, TX (United States)); Craig, H.L. Jr. (Mobil Research and Development Corp., Paulsboro, NJ (United States)); Rusk, G.L. (Mobil Oil Co., Torrance, CA (United States)); Blanchard, K.V.; Rose, T.J.; Uehlein, B.L. (Nalco Chemical Co., Paulsboro, NJ (United States)); Quinter, R.C. (Sun Co., Newtown Square, PA (United States)); Summers, M.A. (Sun Co., Marcus Hook, PA (United States))

1993-04-01T23:59:59.000Z

393

Preparation of LiNi 0.5 Mn 1.5 O 4 for Lithium Batteries Via Solid?State Redox Method using Nitrate and Acetate Based Reactants  

Science Journals Connector (OSTI)

LiNi 0.5 Mn 1.5 O 4 is a potential cathode material for 5 V batteries. This material was prepared by the solid?state redox method using nitrate and acetate based reactants. The precursor material was obtained when the mixture reactants was heated at 500°?C for 10 hours and calcined at different temperatures in the range between 650 and 950°?C for 12 hours. The structures of the synthesized materials were verified with X? ray diffraction (XRD) measurement and Scanning Electron Microscope (SEM). The charge?discharge technique was determined using Solartron 1470. As calcination temperature increases the well?ordered crystal growth oriented to [1 1 1] direction shows a clear octahedral morphology which is the characteristic of the typical cubic spinel. The Li / LiNi 0.5 Mn 1.5 O 4 prepared from acetate based reactants calcined at 750°?C for 12 h delivered the discharge capacity of 140 mAh/g.

A. Mat; K. S. Sulaiman; M. A. Sulaiman; M. F. Hasim

2010-01-01T23:59:59.000Z

394

Experimental Investigation for the Effects of the Core Geometry on the Optimum Acid Flux in Carbonate Acidizing  

E-Print Network (OSTI)

Previous matrix acidizing experimental research showed that there exists an optimum acid interstitial velocity (Vi-opt) that results in the minimum volume of acid used while providing the best stimulation results. There are already several...

Jin, Xiao

2013-11-21T23:59:59.000Z

395

Aerobic Heterotrophic Bacteria Indigenous to pH 2.8 Acid Mine Water: Microscopic Examination of Acid Streamers  

Science Journals Connector (OSTI)

...streamers" found in acid coal mine drainage consist of bacteria...than one species. Acidic coal mine drainage is characterized...of 11 states that comprise Appalachia and includes numerous other coal mining areas ofthe world. The acidic...

Patrick R. Dugan; Carol B. MacMillan; Robert M. Pfister

1970-03-01T23:59:59.000Z

396

Studying Cellulose Fiber Structure by SEM, XRD, NMR and Acid...  

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

Studying Cellulose Fiber Structure by SEM, XRD, NMR and Acid Hydrolysis. Abstract: Cotton linters were partially hydrolyzed in dilute acid and the morphology of remaining...

397

adenylic acid: Topics by E-print Network  

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

preservation A Rauramaa A Tommila J Ltd, Espoo Reseach Centre, PO Box 44, 02271 Espoo, Finland Formic acid is known to improve silage hygienic quality. Formic acid based...

398

acid rain program: Topics by E-print Network  

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

preservation A Rauramaa A Tommila J Ltd, Espoo Reseach Centre, PO Box 44, 02271 Espoo, Finland Formic acid is known to improve silage hygienic quality. Formic acid based...

399

Formation of iron complexs from trifluoroacetic acid based liquid...  

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

of iron complexs from trifluoroacetic acid based liquid chromatography mobile phases as interference ions in liquid Formation of iron complexs from trifluoroacetic acid based...

400

Copper isotope fractionation in acid mine drainage. | EMSL  

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

Copper isotope fractionation in acid mine drainage. Copper isotope fractionation in acid mine drainage. Abstract: We surveyed the Cu isotopic composition of primary minerals and...

Note: This page contains sample records for the topic "glacial acetic acid" 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

Hydrogen-bond acidic functionalized carbon nanotubes (CNTs) with...  

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

Hydrogen-bond acidic functionalized carbon nanotubes (CNTs) with covalently-bound hexafluoroisopropanol groups. Hydrogen-bond acidic functionalized carbon nanotubes (CNTs) with...

402

AVTA: 2010 Honda Civic HEV with Experimental Ultra Lead Acid...  

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

2010 Honda Civic HEV with Experimental Ultra Lead Acid Battery Testing Results AVTA: 2010 Honda Civic HEV with Experimental Ultra Lead Acid Battery Testing Results The Vehicle...

403

Effects of Continuous Triiodothyronine Infusion on Citric Acid...  

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

Continuous Triiodothyronine Infusion on Citric Acid Cycle in the Normal Immature Swine Heart under Extracorporeal Effects of Continuous Triiodothyronine Infusion on Citric Acid...

404

Acid Initiation of Ammonia-Borane Dehydrogenation for Hydrogen...  

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

Acid Initiation of Ammonia-Borane Dehydrogenation for Hydrogen Storage. Acid Initiation of Ammonia-Borane Dehydrogenation for Hydrogen Storage. Abstract: An abstract for this...

405

Behavior of antioxidants during the baking and storage of pie crust  

Science Journals Connector (OSTI)

...1. Acidic synergists such as citric acid, phosphoric acid, ?-amino acetic acid (glycine), or disodium dihydrogen ethylenediamine tetraacetate (“Versene”) produced no significant improvement in the keeping qual...

J. H. Mahon; Ross A. Chapman

1954-03-01T23:59:59.000Z

406

Fraud in the acid rain debate  

SciTech Connect

Electric utility executives, according to the author, and millions of other Americans are the victims of a gigantic fraud being carried on in the name of controlling acid rain. This fraud, states the author, involves the distorted, dire image of acidity in nature being created by environmental groups, politicians and others - to gain public sympathy for their legislative goals. The alleged fraud involves the very nature of the legislation being promoted as a low-cost cure for acid rain. On the basis of scientific evidence to date there is no assurance it will reduce acidity by any appreciable amount, but on the other hand it most certainly will cost users of electricity hundreds of billions of dollars in new costs. What has already happened to the nuclear industry is also meant for coal.

Bagge, C.

1984-06-01T23:59:59.000Z

407

Ascorbic Acid and Cancer: A Review  

Science Journals Connector (OSTI)

...groups, together with the formation of hydrogen bonds, offer a probable explanation...and Landeau, B. R. Ascorbic acid economy in surgical patients. Ann. N. Y...Culver, P. L. Horseradish peroxidase/ hydrogen peroxide-catalyzed oxidation of the...

Ewan Cameron; Linus Pauling; and Brian Leibovitz

1979-03-01T23:59:59.000Z

408

Lactic acid fermentation of crude sorghum extract  

SciTech Connect

Crude extract from sweet sorghum supplemented with vetch juice was utilized as the carbohydrate source for fermentative production of lactic acid. Fermentation of media containing 7% (w/v) total sugar was completed in 60-80 hours by Lactobacillus plantarum, product yield averaging 85%. Maximum acid production rates were dependent on pH, initial substrate distribution, and concentration, the rates varying from 2 to 5 g/liter per hour. Under limited medium supplementation the lactic acid yield was lowered to 67%. The fermented ammoniated product contained over eight times as much equivalent crude protein (N x 6.25) as the original medium. Unstructured kinetic models were developed for cell growth, lactic acid formation, and substrate consumption in batch fermentation. With the provision of experimentally determined kinetic parameters, the proposed models accurately described the fermentation process. 15 references.

Samuel, W.A.; Lee, Y.Y.; Anthony, W.B.

1980-04-01T23:59:59.000Z

409

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

E-Print Network (OSTI)

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

2010-01-01T23:59:59.000Z

410

Ascorbic Acid and Cancer: A Review  

Science Journals Connector (OSTI)

...skinned individuals resident in areas of high solar intensity, such as the southern United States, South Africa, and Australia. Experimentally, the...Effects of Ascorbic Acid Ascorbate and Energy Production. Cytochromes P-450 and b5are...

Ewan Cameron; Linus Pauling; and Brian Leibovitz

1979-03-01T23:59:59.000Z

411

PREDICTING TEMPERATURE BEHAVIOR IN CARBONATE ACIDIZING TREATMENTS  

E-Print Network (OSTI)

PREDICTING TEMPERATURE BEHAVIOR IN CARBONATE ACIDIZING TREATMENTS A Thesis by XUEHAO TAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 2009 Major Subject: Petroleum Engineering PREDICTING TEMPERATURE BEHAVIOR IN CARBONATE ACIDIZING TREATMENTS A Thesis by XUEHAO TAN Submitted to the Office of Graduate Studies of Texas A&M University...

Tan, Xuehao

2010-01-16T23:59:59.000Z

412

Primer on lead-acid storage batteries  

SciTech Connect

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

NONE

1995-09-01T23:59:59.000Z

413

Amplification of trace amounts of nucleic acids  

DOE Patents (OSTI)

Methods of reducing background during amplification of small amounts of nucleic acids employ careful analysis of sources of low level contamination. Ultraviolet light can be used to reduce nucleic acid contaminants in reagents and equipment. "Primer-dimer" background can be reduced by judicious design of primers. We have shown clean signal-to-noise with as little as starting material as one single human cell (.about.6 picogram), E. coli cell (.about.5 femtogram) or Prochlorococcus cell (.about.3 femtogram).

Church, George M. (Brookline, MA); Zhang, Kun (Brighton, MA)

2008-06-17T23:59:59.000Z

414

Biologically produced acid precipitable polymeric lignin  

DOE Patents (OSTI)

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

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

1984-01-01T23:59:59.000Z

415

The inability of rats to synthesize linoleic acid from cis-2-octenoic acid  

E-Print Network (OSTI)

THE INABILITY OF RATS TO SYNTHESI2E LINOLEIC ACID FROM CIS-2-OCTENOIC ACID A Thesis Robert Eugene Anderson Submitted to the Graduate College of the Texas A g: M University in partia1 fulfillment of the requirerents for the degree of MASTER... OF SCIENCE January 1965 Major Subjeot: Bioohemistry THE INABILITY OF RATS TQ SYNTHESIEE LINOLEIC ACID FROM CIS-2E)CTENOIC ACID A Thesis Robert, Eugene Anderson Approved as to style and content by: Chair n of Committee)~ (Head of Depart~ant, Member...

Anderson, Robert Eugene

2012-06-07T23:59:59.000Z

416

E-Print Network 3.0 - acids amino acids Sample Search Results  

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

State University Collection: Biology and Medicine 77 CHE 427627 THE ORGANIC CHEMISTRY OF BIOLOGICAL MOLECULES Summary: macromolecules: carbohydrates, amino acids, nucleic...

417

E-Print Network 3.0 - acid amino acid Sample Search Results  

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

State University Collection: Biology and Medicine 77 CHE 427627 THE ORGANIC CHEMISTRY OF BIOLOGICAL MOLECULES Summary: macromolecules: carbohydrates, amino acids, nucleic...

418

E-Print Network 3.0 - acid docosahexaenoic acid Sample Search...  

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

SAGE-Hindawi Access to Research International Journal of Alzheimer's Disease Summary: APP secretion 19. 2.2. Fatty Acids on Membrane Physical Properties and APP Processing. Fatty...

419

E-Print Network 3.0 - acid-amino acid conjugates Sample Search...  

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

amino acids is reported with the incorporation of one example into a ... Source: Beal, Peter A. - Department of Chemistry, University of Utah Collection: Chemistry 13 An...

420

Glacial Energy Holdings | Open Energy Information  

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Yes Ownership R NERC ERCOT Yes NERC MRO Yes NERC NPCC Yes NERC RFC Yes Activity Retail Marketing Yes This article is a stub. You can help OpenEI by expanding it. Utility...

Note: This page contains sample records for the topic "glacial acetic acid" 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

Introduction 1.1 Glacial Isostatic Adjustment  

E-Print Network (OSTI)

developed by Prof. W.R. Peltier and his colleagues (Peltier 1974, 1976; Peltier & Andrews 1976; Wu & Peltier 1982; Yuen & Peltier 1982; Peltier 1982, 1985; Mitrovica & Peltier 1989, 1991) and further elaborated

Hanyk, Ladislav

422

Introduction 1.1 Glacial Isostatic Adjustment  

E-Print Network (OSTI)

by the normal­mode (NM) approach developed by Prof. W.R. Peltier and his colleagues (Peltier 1974, 1976; Peltier & Andrews 1976; Wu & Peltier 1982; Yuen & Peltier 1982; Peltier 1982, 1985; Mitrovica & Peltier 1989, 1991

Hanyk, Ladislav

423

INTRODUCTION Terminal Proterozoic glacial intervals are  

E-Print Network (OSTI)

, paleontologic, and chemostratigraphic records from sections in Spitsbergen, Canada, Australia, and the Congo synthesis by using detailed 13C and 87Sr/86Sr records from the Congo craton, where a thick succession (>1000 the Congo craton succession as one of the least ambiguous records of chemo- stratigraphic and geologic

Kennedy, Martin J.

424

Correlation between Fibroin Amino Acid Sequence and Physical Silk Properties*  

E-Print Network (OSTI)

moth (Ephe- stia kuehniella), and Indian meal moth (Plodia inter- punctella). The amino acid repeats

Â?urovec, Michal

425

Transcription factor-based biosensors for detecting dicarboxylic acids  

DOE Patents (OSTI)

The invention provides methods and compositions for detecting dicarboxylic acids using a transcription factor biosensor.

Dietrich, Jeffrey; Keasling, Jay

2014-02-18T23:59:59.000Z

426

Purification Or Organic Acids Using Anion Exchange Chromatography.  

DOE Patents (OSTI)

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

Ponnampalam; Elankovan (Okemos, MI)

2001-09-04T23:59:59.000Z

427

Synergy of Lewis and Brønsted Acids on Catalytic Hydrothermal Decomposition of Hexose to Levulinic Acid  

Science Journals Connector (OSTI)

Levulinic acid (LA), an important platform chemical, is regarded as one of top 12 block chemicals. ... Phosphate standard concentrate (85%), glucose (99%), and levulinic acid (99%) were purchased from Aladdin Chemistry Co., Ltd. ... Fructose, chromium(III) chloride hexahydrate, and 5-HMF (purities of these chemicals ? 98%) were purchased from J&K Chemica, Ltd. ...

Fan Yang; Jie Fu; Jing Mo; Xiuyang Lu

2013-10-15T23:59:59.000Z

428

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

E-Print Network (OSTI)

Diversion in carbonates is more difficult than in sandstones because of the ability of acid to significantly increase the permeability in carbonates as it reacts in the pore spaces and flow channels of matrix. In-situ gelled acids that are based...

Gomaa, Ahmed Mohamed Mohamed

2012-07-16T23:59:59.000Z

429

Nucleic Acid Standards - Standard Ref. Frame  

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

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

430

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

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

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

1994-11-01T23:59:59.000Z

431

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

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

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

1994-01-01T23:59:59.000Z

432

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

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

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

1996-10-08T23:59:59.000Z

433

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

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

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

1996-01-01T23:59:59.000Z

434

Photoenhanced anaerobic digestion of organic acids  

DOE Patents (OSTI)

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

Weaver, Paul F. (Golden, CO)

1990-01-01T23:59:59.000Z

435

E-Print Network 3.0 - acid analysis including Sample Search Results  

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

predict the relative acid strength of a set... section. Findings Our analysis led to the identification of four distinct mental models of acid and acid... models of acid and acid...

436

Relative reactivities of solid benzoic acids  

E-Print Network (OSTI)

was always the acid salt, (RBZA) HK. For the reaction, RBZAH + Z R'BZAK, where R g R', the products were those predicted from Hammett o-constants for R and R'. Observations on the mode of reaction and free energy changes are given. The desirability... reaction series chosen was that. one most directly related to the Hammett substituent constants; namely, the reactions of various m- or p- monosubstituted benzoic acids with m- or p-monosubstituted potas- sium benzoate salts. CHAPTER Il RES ULTS...

Warwas, Edwin James

2012-06-07T23:59:59.000Z

437

Acid mine water aeration and treatment system  

DOE Patents (OSTI)

An in-line system is provided for treating acid mine drainage which basically comprises the combination of a jet pump (or pumps) and a static mixer. The jet pump entrains air into the acid waste water using a Venturi effect so as to provide aeration of the waste water while further aeration is provided by the helical vanes of the static mixer. A neutralizing agent is injected into the suction chamber of the jet pump and the static mixer is formed by plural sections offset by 90 degrees.

Ackman, Terry E. (Finleyville, PA); Place, John M. (Bethel Park, PA)

1987-01-01T23:59:59.000Z

438

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

E-Print Network (OSTI)

on the omega-6 fatty acid accumulation in broiler chicken breast and thigh meat. Eight broilers from each treatment were processed at 4 and 6 weeks of age, respectively. Regarding the diets containing five different fat sources, broiler chickens fed CLA...

Shin, Dae Keun

2011-08-08T23:59:59.000Z

439

Protocol for analytical ultracentrifugation sample preparation: 1. Provide partial specific volume (v-bar) of the proteins. If v-bar is not available, send  

E-Print Network (OSTI)

, unless otherwise specified. Acceptable buffer components: 1-Propanol 2-Propanol Acetic Acid Acetone Hydrochloric acid Inulin Lactic acid Lactose Lanthanum nitrate Lead nitrate Lithium chloride Magnesium chloride Silver nitrate Sodium acetate Sodium bicarbonate Sodium bromide Sodium carbonate Sodium chloride Sodium

Chan, Hue Sun

440

A method to attenuate U(VI) mobility in acidic waste plumes using humic acids  

SciTech Connect

Acidic uranium (U) contaminated plumes have resulted from acid-extraction of plutonium during the Cold War and from U mining and milling operations. A sustainable method for in-situ immobilization of U under acidic conditions is not yet available. Here, we propose to use humic acids (HAs) for in-situ U immobilization in acidic waste plumes. Our laboratory batch experiments show that HA can adsorb onto aquifer sediments rapidly, strongly and practically irreversibly. Adding HA greatly enhanced U adsorption capacity to sediments at pH below 5.0. Our column experiments using historically contaminated sediments from the Savannah River Site under slow flow rates (120 and 12 m/y) show that desorption of U and HA were non-detectable over 100 pore-volumes of leaching with simulated acidic groundwaters. Upon HA-treatment, 99% of the contaminant [U] was immobilized at pH < 4.5, compared to 5% and 58% immobilized in the control columns at pH 3.5 and 4.5, respectively. These results demonstrated that HA-treatment is a promising in-situ remediation method for acidic U waste plumes. As a remediation reagent, HAs are resistant to biodegradation, cost effective, nontoxic, and easily introducible to the subsurface.

Wan, J.; Dong, W.; Tokunaga, T.K.

2011-02-01T23:59:59.000Z

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


441

Preparation of Some Substituted Terephthalic Acids  

E-Print Network (OSTI)

, with the dilithiation of 2,5-dibromotoluene with t-BuLi at ­78 8C, followed by reaction with dry ice and subsequent acid (3) is esterified,[9] then side-chain brominated with NBS, to produce dimethyl 2

Benin, Vladimir

442

Acid dyes removal using low cost adsorbents  

Science Journals Connector (OSTI)

Dyestuff production units and dyeing units have always had pressing need techniques that allow economical pre-treatment for colour in the effluent. The effectiveness of adsorption for dye removal from wastewaters has made it an ideal alternative to other expensive treatment options. Removal of acid green

A.H. Aydin; Y. Bulut; O. Yavuz

2004-01-01T23:59:59.000Z

443

Heterogeneous organic acid uptake on soot surfaces  

E-Print Network (OSTI)

observed the interaction between a number of carboxylic acids and soot from different fuel sources and formation mechanisms. A low pressure fast flow reactor was used to control the contact between the solid phase soot and gas phase organics, while chemical...

Levitt, Nicholas Paul

2009-05-15T23:59:59.000Z

444

Peer review plan muddies acid rain talks  

Science Journals Connector (OSTI)

Bilateral U.S./Canadian talks on an acid rain treaty are being buffeted by bitter winds of national politics and uncertain science. The latest ill wind to blow north, as far as the Canadians are concerned, is the U.S. plan to have peer reviewed all ...

1982-05-10T23:59:59.000Z

445

MFR PAPER 1339 Phosphonoacetic Acid Inhibition of  

E-Print Network (OSTI)

phosphonoace- tic acid (PAA), functions specifically by inhibiting the herpesvirus coded DNA dependent DNA polymerase in its process of replicating virus DNA (Mao and Robishaw, [975). In tissue culture systems, PAA and Overby, 1975). In all cases, the effec- tive tissue culture dose of PAA which inhibited herpesvirus

446

Corrosion free phosphoric acid fuel cell  

DOE Patents (OSTI)

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

Wright, Maynard K. (Bethel Park, PA)

1990-01-01T23:59:59.000Z

447

Detection of nucleic acid sequences by invader-directed cleavage  

DOE Patents (OSTI)

The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The 5' nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof. The present invention further relates to methods and devices for the separation of nucleic acid molecules based by charge.

Brow, Mary Ann D. (Madison, WI); Hall, Jeff Steven Grotelueschen (Madison, WI); Lyamichev, Victor (Madison, WI); Olive, David Michael (Madison, WI); Prudent, James Robert (Madison, WI)

1999-01-01T23:59:59.000Z

448

Producing a trimethylpentanoic acid using hybrid polyketide synthases  

DOE Patents (OSTI)

The present invention provides for a polyketide synthase (PKS) capable of synthesizing trimethylpentanoic acid. The present invention also provides for a host cell comprising the PKS and when cultured produces the trimethylpentanoic acid. The present invention also provides for a method of producing the trimethylpentanoic acid, comprising: providing a host cell of the present invention, and culturing said host cell in a suitable culture medium such that the trimethylpentanoic acid is produced, optionally isolating the trimethylpentanoic acid, and optionally, reducing the isolated trimethylpentanoic acid into a trimethylpentanol or an iso-octane.

Katz, Leonard; Fortman, Jeffrey L; Keasling, Jay D

2014-10-07T23:59:59.000Z

449

Investigating the Effect of Oil Saturation on Acid Propagation during Matrix Acidization of Carbonate Rocks  

E-Print Network (OSTI)

The existence of an optimum injection rate for wormhole propagation, and face dissolution at low injection rates during matrix acidizing are well established. However, little has been documented that describes how the presence of residual oil...

Kumar, Rahul Pradeep

2014-01-02T23:59:59.000Z

450

Effects of Acid Additives on Spent Acid Flowback through Carbonate Cores  

E-Print Network (OSTI)

Matrix acidizing is a well stimulation technique used to remove formation damage in the near wellbore region. But it comes with an associated set of challenges such as corrosion of the tubulars and iron precipitation in the formation. To counter...

Nasir, Ehsaan Ahmad

2012-07-16T23:59:59.000Z

451

Modeling Acid Transport and Non-Uniform Etching in a Stochastic Domain in Acid Fracturing  

E-Print Network (OSTI)

Success of acid fracturing depends on uneven etching along the fracture surfaces caused by heterogeneities such as variations in local mineralogy and variations in leakoff behavior. The heterogeneities tend to create channeling characteristics...

Mou, Jianye

2010-10-12T23:59:59.000Z

452

A study of the distribution of fatty acids in the system: cottonseed oil-oleic acid-isopropanol-water  

E-Print Network (OSTI)

A STDDY OF THI' DISTBIRliTION OF FATTY ACIDS IN THE SYSTEM: COTTONSFED OIL - OLEIC ACID - ISOPBOPANOL - YlATEB A Thesis Frank E. Lomb January 1948 Approval as to style and content recommended: Head ' t Te epartm nt of hem cal Engineer ng A... STUDY OF THE DISTHIBUTION OF FATTY ACIDS IN THE SYSTEM: COTTONSEED OIL - OLEIC ACID - ISOFHOPANOL - WATER A Thesis By Frank E. Lamb January 1948 A STUDY QF TNE DISTRIBUTION OF FATTY ACIDS IN TRE SYSTEM: COTTONSEED OII, - OIEIC ACID - ISOPROPANOL...

Lamb, Frank E

2012-06-07T23:59:59.000Z

453

A First Look at Yeast Fatty Acid Synthase  

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

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

454

Acid-catalyzed dehydrogenation of amine-boranes  

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

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

455

A First Look at Yeast Fatty Acid Synthase  

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

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

456

Mid-ultraviolet Light-Emitting Diode Detects Dipicolinic Acid  

Science Journals Connector (OSTI)

Dipicolinic acid (DPA, 2,6-pyridinedicarboxylic acid) is a substance uniquely present in bacterial spores such as that from anthrax (B. anthracis). It is known that DPA can be...

Li, Qingyang; Dasgupta, Purnendu K; Temkin, Henryk; Crawford, M H; Fischer, A J; Allerman, A A; Bogart, K H A; Lee, S R

2004-01-01T23:59:59.000Z

457

TRL Acid and Solvent Wet Processing Rules and Guidelines  

E-Print Network (OSTI)

: General rules and guidelines for wet chemical processing in TRL. Author: KFlo hood and when transporting or handling chemicals. An acid-proof apron, sleeveTRL Acid and Solvent Wet Processing Rules and Guidelines Purpose

Reif, Rafael

458

Development and testing of an advanced acid fracture conductivity apparatus  

E-Print Network (OSTI)

wells. Acid fracturing is a standard practice to increase the production rate and to improve ultimate recovery in carbonate reservoirs. There have been successful cases in most carbonate reservoirs around the world. However acid fracture performance...

Zou, ChunLei

2006-08-16T23:59:59.000Z

459

Choline for neutralizing naphthenic acid in fuel and lubricating oils  

SciTech Connect

A method is described of neutralizing at least a portion of the naphthenic acids present in fuel and lubricating oils which contain naphthenic acids which comprises treating these oils with a neutralizing amount of choline.

Ries, D.G.; Roof, G.L.

1986-07-15T23:59:59.000Z

460

Integrated 3D Acid Fracturing Model for Carbonate Reservoir Stimulation  

E-Print Network (OSTI)

in integrating fracture propagation, acid transport and dissolution, and well performance models in a seamless fashion for acid fracturing design. In this new approach, the fracture geometry data of a hydraulic fracture is first obtained from commercial models...

Wu, Xi

2014-06-23T23:59:59.000Z

Note: This page contains sample records for the topic "glacial acetic acid" 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

High Temperature Fuel Cell (Phosphoric Acid) Manufacturing R...  

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

Fuel Cell (Phosphoric Acid) Manufacturing R&D High Temperature Fuel Cell (Phosphoric Acid) Manufacturing R&D Presented at the NREL Hydrogen and Fuel Cell Manufacturing R&D Workshop...

462

Nucleic acid based fluorescent sensor for copper detection  

DOE Patents (OSTI)

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

Lu, Yi; Liu, Juewen

2013-04-02T23:59:59.000Z

463

Influence of boric acid additive size on green lubricant performance  

Science Journals Connector (OSTI)

...towards green manufacturing processes, there...boric acid powder additives with canola oil...change present manufacturing process lines...powder-based lubricant additives As conceptually...of boric acid additive size on green...towards green manufacturing processes, there...

2010-01-01T23:59:59.000Z

464

The Effect of Heterogeneity on Matrix Acidizing of Carbonate Rocks  

E-Print Network (OSTI)

In matrix acidizing, the goal is to dissolve minerals in the rock to increase well productivity. This is accomplished by injecting an application-specific solution of acid into the formation at a pressure between the pore pressure and fracture...

Keys, Ryan S.

2010-07-14T23:59:59.000Z

465

Kinetic evaluation of the esterification of fatty acids to biodiesel  

Science Journals Connector (OSTI)

The free fatty acids of cotton seed oil were processed with methanol and ethanol into the corresponding alkyl fatty esters in the presence of diluted sulfuric acid. The products characterized as biodiesels pre...

Frederico A. D. Araújo; Sonia V. Pereira…

2012-10-01T23:59:59.000Z

466

The determination of potential acidity in overburden sediments  

E-Print Network (OSTI)

Weathered Overburden Samples. Determination of Total Sulfur by LECO. Determination of Non-Sulfate Sulfur by LECO. Pyritic Iron Using the ASTM Method Potential Acidity Using a Rapid Oxidation Technique - Original Method. Potential Acidity Using a Rapid... the Sample. The Addition of Excess H 02. Catalysing the Decomposition of Excess H202. Leaching the Oxidized Sample with CaC12. Comparison of Potential Acidity Methods. F and T Tests. Potential Acidity of Weathered vs. Unweathered Samples. Total S...

O'Shay, Tracey Ann

2012-06-07T23:59:59.000Z

467

The biodegradation of organic acids by a heterogeneous bacterial culture  

E-Print Network (OSTI)

- tion of fatty acids results in multiple cleavage of the molecules to form shorter chain acids. It has been found (1I) that ethanoic and butanoic are the principle volatile acids present during digestion of sewage sludge while propanoic and pentanoic... was developed from a heterogeneous culture found in a sewage plant effluent. The culture was developed in a bench scale continuous flow activated. sludge reactor, and individual studies were made in a bench scale aerated batch reactor. The acids used were...

Tyer, Bobby Ray

1968-01-01T23:59:59.000Z

468

Nucleic Acid Standards - Sugar and Phosphate Constituents  

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

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

469

Improved Processes to Remove Naphthenic Acids  

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

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

470

Critical review of naphthenic acid corrosion  

SciTech Connect

Naphthenic acid corrosion continues to be a reliability issue in refinery distillation units. A review of the subject is presented herein with special focus on field and laboratory data and on areas where research is needed. The review shows that several parameters are known to affect the corrosion process and their individual effect on crude corrosivity are somewhat understood. However, their combined effect is still subject to much controversy. The determination of a critical factor--naphthenic acid content--is still not standardized. It is shown herein that, by arranging the literature findings into three groups (1) furnace tubes and transfer lines, (2) vacuum column and (3) side cut piping, a better agreement of the literature data is achieved.

Tebbal, S. [SET Labs., Inc., Stafford, TX (United States)

1999-11-01T23:59:59.000Z

471

Sulfate and acid resistant concrete and mortar  

DOE Patents (OSTI)

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

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

1998-06-30T23:59:59.000Z

472

Sulfate and acid resistant concrete and mortar  

DOE Patents (OSTI)

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

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

1998-01-01T23:59:59.000Z

473

Reference electrode for strong oxidizing acid solutions  

DOE Patents (OSTI)

A reference electrode for the measurement of the oxidation-reduction potentials of solutions is especially suitable for oxidizing solutions such as highly concentrated and fuming nitric acids, the solutions of nitrogen oxides, N.sub.2 O.sub.4 and N.sub.2 O.sub.5, in nitric acids. The reference electrode is fabricated of entirely inert materials, has a half cell of Pt/Ce(IV)/Ce(III)/70 wt. % HNO.sub.3, and includes a double-junction design with an intermediate solution of 70 wt. % HNO.sub.3. The liquid junctions are made from Corning No. 7930 glass for low resistance and negligible solution leakage.

Rigdon, Lester P. (Livermore, CA); Harrar, Jackson E. (Castro Valley, CA); Bullock, Sr., Jack C. (Pleasanton, CA); McGuire, Raymond R. (Brentwood, CA)

1990-01-01T23:59:59.000Z

474

Lightweight, durable lead-acid batteries  

DOE Patents (OSTI)

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

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

2011-09-13T23:59:59.000Z

475

Lightweight, durable lead-acid batteries  

SciTech Connect

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

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

2013-05-21T23:59:59.000Z

476

E-Print Network 3.0 - acid alkyl esters Sample Search Results  

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

Nitric Acid 34. Sulfuric acid... .5 will not be accepted through this program. Heavy metal, toxic, acidic (without solvents) and basic wastes should... . Mercaptans 4. ......

477

E-Print Network 3.0 - acid improves hypertriglyceridemia Sample...  

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

contain unusual fatty acids that are valuable... p. 1 Lipid signals: jasmonic acid & green leaf volatiles i. Jasmonic acid and jasmonates... agronomic species i) diffent...

478

E-Print Network 3.0 - acid promotes detoxification Sample Search...  

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

Bile acid Detoxification, Synthesis... acid transport, synthesis and detoxification. The LCA-induced altered enzymes and transporter... ;Regulation of bile acid detoxification and...

479

E-Print Network 3.0 - acid requirements based Sample Search Results  

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

(Eichhornia crassipes) to levulinic acid (LA) through an acid-catalysed hydrolysis reaction. LA has been... OHOH OH Diphenolic acid O CH3 Methyltetrahydrofuran O O OHNH2 ......

480

E-Print Network 3.0 - aminocyclopropane carboxylic acid Sample...  

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

acid, which primarily loses the ele... -methylaziridinecarboxylic acid via an internal SN2 pathway, rather than protonated vinylglycine. Protonated amino acids... readily expel...

Note: This page contains sample records for the topic "glacial acetic acid" 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

E-Print Network 3.0 - aromatic sulfonic acids Sample Search Results  

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

examples: Methane sulfonic... acid Ethane sulfonic acid 1-Propane sulfonic acid 1-Butane ... Source: Wikswo, John - Department of Physics and Astronomy, Vanderbilt University...

482

Naphthenic acid corrosion in the refinery  

SciTech Connect

Field tests and laboratory studies of refinery process streams are presented. The effects of temperature, velocity and physical state were studied with respect to alloy selection for corrosion resistant service. The amount of molybdenum in the austenitic stainless steel alloys is the dominant factor in conferring corrosion resistance. The Naphthenic Acid Corrosion Index (NACI) is useful in assessing the severity of corrosion under a variety of circumstances.

Craig, H.L. Jr. [Mobil Research and Development Corp., Paulsboro, NJ (United States)

1995-11-01T23:59:59.000Z

483

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

484

The Effect of Supercritical Fluids on Solid Acid Catalyst Alkylation  

Science Journals Connector (OSTI)

Box 1625, Idaho Falls, Idaho 83415-2208, and Marathon-Ashland Petroleum LLC, P.O. ... The liquid acid processes present serious safety and environmental concerns in both the transport and storage of concentrated liquid acids and the disposal of acid?oil sludges. ...

Daniel M. Ginosar; David N. Thompson; Kyle Coates; David J. Zalewski

2002-05-15T23:59:59.000Z

485

The Fixation of Phosphoric Acid by the Soil  

E-Print Network (OSTI)

KAS AtiRICULTURAL EXPERIMENT STATION AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS W. B. BII BULLETIN NO. 304 eddent CEMBER, 1922 'ION OF PHOSPI ACID BY THE SOIL B. YOUNGBLOOD, DIRECTOR, COLLEGE STATION, BRAZOS COUNTY, TEXA STATION STAFF... ............................................... '7 ............................................... ;t of Acid 7' ........................................... of Ignition 8 ........................................ on by Minerals 10 ...................... on of Phosphoric Acid of Fertilizers 11...

Fraps, G. S. (George Stronach)

1922-01-01T23:59:59.000Z

486

How is ferulic acid transported into the Golgi apparatus? Lignin  

E-Print Network (OSTI)

How is ferulic acid transported into the Golgi apparatus? Lignin polymerization is also influenced]. These ferulic acid residues are thought to initiate lignin polymerization. It is not known how ferulic acid in the cell wall field, but also creates novel opportunities for the manipulation of lignin in crop plants

487

Process for the extraction of strontium from acidic solutions  

DOE Patents (OSTI)

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

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

1994-09-06T23:59:59.000Z

488

Production of carboxylic acid and salt co-products  

DOE Patents (OSTI)

This invention provide processes for producing carboxylic acid product, along with useful salts. The carboxylic acid product that is produced according to this invention is preferably a C.sub.2-C.sub.12 carboxylic acid. Among the salts produced in the process of the invention are ammonium salts.

Hanchar, Robert J.; Kleff, Susanne; Guettler, Michael V.

2014-09-09T23:59:59.000Z

489

EGVII endoglucanase and nucleic acids encoding the same  

DOE Patents (OSTI)

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

Dunn-Coleman, Nigel; Goedegebuur, Frits; Ward, Michael; Yao, Jian

2014-02-25T23:59:59.000Z

490

Process for the extraction of strontium from acidic solutions  

DOE Patents (OSTI)

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

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

1993-01-01T23:59:59.000Z

491

The Effects of Initial Condition of Fracture Surfaces, Acid Spending, and Type on Conductivity of Acid Fracture  

E-Print Network (OSTI)

. Another area of interest is the variation of conductivity along the fracture due to acid spending. We also investigated the contact time, acid system type, and treatment temperature effects on conductivity using San Andres dolomite cores. The results...

Almomen, Ali Mansour

2013-07-24T23:59:59.000Z

492

Naphthenic acid corrosion in synthetic fuels production  

SciTech Connect

Serious corrosion damage to carbon steel piping in a fractionation unit associated with synthetic fuels production has been ascribed to the presence of naphthenic acids. Investigation of the problem revealed total acids numbers (TAN) ranging from 8--12mg KOH/g in the feed to the unit. Damage typically occurred in the temperature range 180--240 C and manifested as localized pitting, preferential weld corrosion, general wall thinning and end-grain attack. Filming amine corrosion inhibitors designed for refinery overhead systems have been proven ineffective and high temperature phosphate-based inhibitors could not be used due to potential catalyst poisoning in downstream refinery units. Coupon exposures indicated corrosion rates in the order of 2 mm/y on carbon steel in a reboiler line as well as pitting to austenitic stainless steel type UNS S30403. Line replacement in austenitic stainless steel UNS S31603 has been proven effective. The performance of this alloy is mainly ascribed to its molybdenum content. The absence of sulfur in the feed to the unit is also contributing to the alloy performance despite the extremely high total acid numbers.

Bruyn, H.I. de [Mossgas Ltd., Mossel Bay (South Africa)

1998-12-31T23:59:59.000Z

493

The effects of solvent mixtures on the gel permeation chromatography of alkanes, fatty acids, and fatty acid esters  

E-Print Network (OSTI)

THE EFFECTS OF SOLVENT MIXTURES ON THE GEL PERMEATION CHROMATOGRAPHY OF ALKANES, FATTY ACIDS, AND FATTY ACID ESTERS A Thesis PATRICK LEE BOLTON Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1985 Major Subject: Chemistry THE EFFECTS OP SOLVENT MIXTURES ON THE GEL PERMEATION CHROMATOGRAPHY OF ALKANES, FATTY ACIDS, AND FATTY ACID ESTERS A Thesis by PATRICK LEE BOLTON Approved...

Bolton, Patrick Lee

1985-01-01T23:59:59.000Z

494

Type II Diacylglycerol Acyltransferase from Claviceps purpurea with Ricinoleic Acid, a Hydroxyl Fatty Acid of Industrial Importance, as Preferred Substrate  

Science Journals Connector (OSTI)

...total fatty acids in sclerotium oil (2). Ricinoleic acid, a...CpDGAT2 cDNA were obtained using a Marathon cDNA amplification kit (BD...purified from Ricinus communis oil according to Donaldson (11...fatty acids in the sclerotium oil of this fungus (2). DGAT2...

Ioannis Mavraganis; Dauenpen Meesapyodsuk; Patricia Vrinten; Mark Smith; Xiao Qiu

2009-12-18T23:59:59.000Z

495

Dosage de la lignine insoluble en milieu acide : influence du prtraitement par hydrolyse acide sur la lignine Kla-  

E-Print Network (OSTI)

Dosage de la lignine insoluble en milieu acide : influence du prétraitement par hydrolyse acide sur la lignine Kla- son de bois et de paille Bernard MONTIES LN.R.A., Laboratoire de Chimie biologique et la lignine insoluble dans l'acide sulfurique concentré, lignine Klason, est décrit : il comporte une

Paris-Sud XI, Université de

496

Rate dependent finite deformation stressstrain behavior of an ethylene methacrylic acid copolymer and an ethylene methacrylic acid butyl  

E-Print Network (OSTI)

Rate dependent finite deformation stress­strain behavior of an ethylene methacrylic acid copolymer and an ethylene methacrylic acid butyl acrylate copolymer S. Deschanel a,*, B.P. Greviskes a , K. Bertoldi a , S dependence a b s t r a c t The large strain deformation behaviors of an ethylene methacrylic acid (EMAA

497

Phosphatidic acid: an emerging plant lipid second messenger  

Science Journals Connector (OSTI)

Evidence is accumulating that phosphatidic acid is a second messenger. Its level increases within minutes of a wide variety of stress treatments including ethylene, wounding, pathogen elicitors, osmotic and oxidative stress, and abscisic acid. Enhanced signal levels are rapidly attenuated by phosphorylating phosphatidic acid to diacylglycerol pyrophosphate. Phosphatidic acid is the product of two signalling pathways, those of phospholipases C and D, the former in combination with diacylglycerol kinase. Families of these genes are now being cloned from plants. Several downstream targets of phosphatidic acid have been identified, including protein kinases and ion channels.

Teun Munnik

2001-01-01T23:59:59.000Z

498

Continuous-flow free acid monitoring method and system  

DOE Patents (OSTI)

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

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

1980-01-11T23:59:59.000Z

499

Naphthenic acids as antiwear additives for jet fuels  

SciTech Connect

One of the ways in which the antiwear properties of jet fuels can be improved is the use of lubricity agents, otherwise known as antiwear additives. Among the various compounds that have antiwear properties in these fuels, naphthenic, acids merit special attention. These are alicyclic carboxylic acids, in most cases monobasic, with five- and six-membered carbon rings; they have the general formula R(CH{sub 2}){sub n}COOH, where R is a naphthene radical. Natural naphthenic acids consist mainly of acids of the cyclopentane series, beginning with the simplest, in particular cyclopentylacetic acid. The lower naphthenic acids are monocyclic; the higher acids, beginning with C{sub 13}, are bicyclic and polycyclic. Naphthenic acids of the cyclohexane series are encountered less frequently; they may be found, for example, in Baku, California, and Sakhalin crudes. The most widely used method for obtaining naphthenic acids is the treatment of light distillates, lube distillates, and diesel fuels. The standard GOST 13302-77 establishes several grades of naphthenic acids, depending on the raw material and the production technology. This work was aimed at the utilization of wastes containing naphthenic acids, with subsequent use as jet fuel additives.

Deineko, P.S.; Vasil`eva, E.N.; Popova, O.V.; Bashkatova, S.T.

1995-05-01T23:59:59.000Z

500

Relative timing of last glacial maximum and late-glacial events in the central tropical Andes  

E-Print Network (OSTI)

, Kurt M. Rademaker a a Department of Earth Sciences and the Climate Change Institute, Edward T. Bryand

Winckler, Gisela