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


1

Method of making alkyl esters  

DOE Patents [OSTI]

Methods of making alkyl esters are described herein. The methods are capable of using raw, unprocessed, low-cost feedstocks and waste grease. Generally, the method involves converting a glyceride source to a fatty acid composition and esterifying the fatty acid composition to make alkyl esters. In an embodiment, a method of making alkyl esters comprises providing a glyceride source. The method further comprises converting the glyceride source to a fatty acid composition comprising free fatty acids and less than about 1% glyceride by mass. Moreover, the method comprises esterifying the fatty acid composition in the presence of a solid acid catalyst at a temperature ranging firm about 70.degree. C. to about 120.degree. C. to produce alkyl esters, such that at least 85% of the free fatty acids are converted to alkyl esters. The method also incorporates the use of packed bed reactors for glyceride conversion and/or fatty acid esterification to make alkyl esters.

Elliott, Brian (Wheat Ridge, CO)

2010-09-14T23:59:59.000Z

2

Experimental Investigations of an IC Engine Operating with Alkyl Esters of Jatropha, Karanja and Castor Seed Oil  

Science Journals Connector (OSTI)

Abstract Diesel engines are efficient systems popularly used to meet electricity and other power requirements for agriculture, industry, transportation and decentralized power generation. Vegetable oils can be successfully used in Compression Ignition (CI) engine either through engine modifications or fuel modifications, later being more feasible option. Fuel modification options include blending of vegetable oils with mineral diesel, transesterification, cracking/pyrolysis, micro-emulsion, and hydrogenation to reduce polymerization and viscosity, transesterification of vegetable oil with a short chain alcohol i.e. methanol or ethanol being most popular. Several non-edible plant oils have been found to be promising crude oils for the production of biodiesel. Methanol is most commonly used in commercial production of biodiesel. Fatty acid alkyl esters (FAAE) produced from higher alcohols is of interest as they may have different fuel properties in comparison to methyl or ethyl esters. In the present investigations, preparation of methanol, ethanol, propanol and butanol were used for formation of alkyl esters of Jatropha, Karanja and Castor. The composition of Jatropha, Karanja and Castor oil were analysed and alcoholysis process for preparing alkyl esters of Jatropha, Karanja and Castor oil with various alcohols was optimised. Alkyl ester-diesel blends were used to test the diesel engine at different load conditions and extensive performance and emissions studies were conducted in single cylinder direct injection compression ignition engines. It is concluded that lower blends of ethyl, propyl and butyl esters of Jatropha and Karanja feedstock have physico-chemical properties similar to methyl esters. However, deviation from the properties became larger for higher blending ratio. Therefore, in order to get engine performance in close range of diesel, the optimum blending ratio of higher alkyl esters need to be even less than methyl esters. Lower blends of higher alkyl esters are expected to give engine characteristics in close proximity to diesel overcoming the limitations of bio-diesel, while retaining the advantages.

Sanjay Bajpai; Lalit Mohan Das

2014-01-01T23:59:59.000Z

3

Anhydrous aluminum chloride as an alkylation catalyst: identification of mono- and dialkyl-benzenes from the condensation of tertiary butyl alcohol with benzene.  

E-Print Network [OSTI]

LIBRARY a a w c"I. I. SI - O~ TI:YAf ANHYDROUS ALUMINUM CHLORIDE AS AN ALKYLATION CATALYST: IDENTIFICATION OF MONO- AND DIALKYIZENZENES FROM THE CONDENSATION QF TERTIARY BUTYL ALCOHOL WITH BENKENE IACEY EUGENE SCOGGINS 4 A Thesis Submitted...: IDENTIFICATION OF MONO- AND DI~NZZNES FROM THE CONDENSATION OF TERTIARY BUTYL ALCOHOL WITH BENZENE A Thesis By LACEY EUGENE SCOGGINS Approved as to style and content hy: Chairman of Committee Head of Chemistry Department 1959 ACKNOWLEDGME1VTS The author...

Scoggins, Lacey E

1959-01-01T23:59:59.000Z

4

E-Print Network 3.0 - acid mono-2-ethylhexyl ester Sample Search...  

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

B. Magnetic properties a b s t r a c t FeVinyl ester... surfactant or coupling agent. Vinyl ester monomer serves as a coupling agent with one side covalently bound Source: Guo,...

5

A Detailed Chemical Kinetic Reaction Mechanism for Oxidation of Four Small Alkyl Esters in Laminar Premixed Flames  

SciTech Connect (OSTI)

A detailed chemical kinetic reaction mechanism has been developed for a group of four small alkyl ester fuels, consisting of methyl formate, methyl acetate, ethyl formate and ethyl acetate. This mechanism is validated by comparisons between computed results and recently measured intermediate species mole fractions in fuel-rich, low pressure, premixed laminar flames. The model development employs a principle of similarity of functional groups in constraining the H atom abstraction and unimolecular decomposition reactions in each of these fuels. As a result, the reaction mechanism and formalism for mechanism development are suitable for extension to larger oxygenated hydrocarbon fuels, together with an improved kinetic understanding of the structure and chemical kinetics of alkyl ester fuels that can be extended to biodiesel fuels. Variations in concentrations of intermediate species levels in these flames are traced to differences in the molecular structure of the fuel molecules.

Westbrook, C K; Pitz, W J; Westmoreland, P R; Dryer, F L; Chaos, M; Osswald, P; Kohse-Hoinghaus, K; Cool, T A; Wang, J; Yang, B; Hansen, N; Kasper, T

2008-02-08T23:59:59.000Z

6

Stereoselective SN2? alkylation reaction sequence of the ?,?-epoxy ?,?-unsaturated ester system via ?,?-chlorohydrin intermediates by the use of a R3Al–CuCN reagent  

Science Journals Connector (OSTI)

A novel stereoselective SN2? alkylation reaction sequence of the ?,?-epoxy ?,?-unsaturated ester system has been developed which involves a regioselective substitution reaction with chloride ions at the ?-position and a subsequent SN2? alkylation reaction of the resulting ?-chloro-?-hydroxy derivatives with a R3Al–CuCN reagent. The new methodology was demonstrated to be applicable to a variety of substrates and to provide various ?-hydroxy-?-alkyl-?,?-unsaturated esters including those bearing a quaternary asymmetric carbon atom at the ?-position in a highly stereoselective manner and high yields.

Fumihiko Yoshimura; Atsushi Matsui; Atsushi Hirai; Keiji Tanino; Masaaki Miyashita

2009-01-01T23:59:59.000Z

7

Alkylate  

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

Day) Day) Product: Alkylate Aromatics Asphalt & Road Oil Isomers Isobutane Isopentane & Isohexane Isooctane Lubricants Marketable Petroleum Coke Hydrogen Sulfur Period: Annual (as of January 1) Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Product Area 2008 2009 2010 2011 2012 2013 View History U.S. 1,260,985 1,260,923 1,248,514 1,262,443 1,246,875 1,269,361 1982-2013 PAD District 1 110,229 110,229 95,500 108,629 79,429 91,429 1982-2013 Delaware 11,729 11,729 0 11,729 11,729 11,729 1982-2013 Florida 0 0 0 0 0 0 2007-2013 Georgia 0 0 0 0 0 0 2006-2013 Maryland 0 0 0 0 0 0 2007-2013 New Jersey 40,200 40,200 36,200 37,200 37,200 37,200 1982-2013

8

Low Temperature Autoignition of C8H16O2 Ethyl and Methyl Esters in a Motored Engine  

Broader source: Energy.gov [DOE]

The alkyl chain of fatty acid esters experience the typical paraffin-like low temperature oxidation sequence; the alkyl chain length of fatty acid esters has a crucial impact on the ignition behavior of fatty acid esters

9

Highly Enantioselective sec-Alkyl Sulfatase Activity of Sulfolobus acidocaldarius DSM 639  

Science Journals Connector (OSTI)

Highly Enantioselective sec-Alkyl Sulfatase Activity of Sulfolobus acidocaldarius DSM 639 ... rac-sec-Alkyl sulfate esters 1a?4a were resolved in high enantioselectivities with E-values up to >200 using whole cells of aerobically grown Sulfolobus acidocaldarius DSM 639. ... On the basis of vague hints on the stereospecific and enantioselective hydrolysis of alkyl sulfate esters,3 we recently reported an alkyl sulfatase (termed “RS2”) from Rhodococcus ruber DSM 44541. ...

Sabine R. Wallner; Bettina M. Nestl; Kurt Faber

2004-12-02T23:59:59.000Z

10

Degradable Terpolymers with Alkyl Side Chains Demonstrate Enhanced Gene Delivery Potency and Nanoparticle Stability  

E-Print Network [OSTI]

Degradable, cationic poly(?-amino ester)s (PBAEs) with alkyl side chains are developed for non-viral gene delivery. Nanoparticles formed from these PBAE terpolymers exhibit significantly enhanced DNA transfection potency ...

Eltoukhy, Ahmed A.

11

A Practical and Highly Stereoselective Umpolung Alternative to the Alkylation of Chiral Enolates  

E-Print Network [OSTI]

-chiral center of high optical purity based on the SN2 displace- ment reaction of alkyl cuprates on chiral allyl, the reaction sometimes leads to self-condensa- tion byproducts. The Lewis acid induced alkylation of silyl enol ethers allows reaction with SN1-prone electrophiles but is of limited use with ester or amide derived O

Spino, Claude

12

Alkylating Properties of Phosphoramide Mustard  

Science Journals Connector (OSTI)

...undergoes alkylation reactions as an intact molecule...rather than a direct SN2 displacement of the chlorine...undergoes alkylation reactions as an intact molecule...ylamine formed in the reaction of phosphoramide mustard...alkylation by direct (SN2) displacement of the...

Michael Colvin; Robert B. Brundrett; Man-Na N. Kan; Ian Jardine; and Catherine Fenselau

1976-03-01T23:59:59.000Z

13

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

biodiesel or renewable diesel, renewable gasoline, renewable naphtha, biocrude, biogas, and other renewable, biodegradable, mono alkyl ester combustible fuel derived from...

14

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

and other renewable, biodegradable mono alkyl ester combustible fuel derived from biomass. Waivers to the B2 requirement for state agency vehicles may be granted if the fuel...

15

Mild Catalytic methods for Alkyl-Alkyl Bond Formation  

SciTech Connect (OSTI)

Overview of Research Goals and Accomplishments for the Period 07/01/06 – 06/30/07: Our overall research goal is to transform the rapidly emerging synthetic chemistry involving alkyl-alkyl cross-couplings into more of a mechanism-based field so that that new, rationally-designed catalysts can be performed under energy efficient conditions. Our specific objectives for the previous year were 1) to obtain a proper electronic description of an active catalyst for alkyl-alkyl cross-coupling reactions and 2) to determine the effect of ligand structure on the rate, scope, selectivity, and functional group compatibility of C(sp3)-C(sp3) cross-coupling catalysis. We have completed both of these initial objectives and established a firm base for further studies. The specific significant achievements of the current grant period include: 1) we have performed magnetic and computational studies on (terpyridine)NiMe, an active catalyst for alkyl-alkyl cross couplings, and have discovered that the unpaired electron resides heavily on the terpyridine ligand and that the proper electronic description of this nickel complex is a Ni(II)-methyl cation bound to a reduced terpyridine ligand; 2) we have for the first time shown that alkyl halide reduction by terpyridyl nickel catalysts is substantially ligand based; 3) we have shown by isotopic labeling studies that the active catalyst (terpyridine)NiMe is not produced via a mechanism that involves the formation of methyl radicals when (TMEDA)NiMe2 is used as the catalyst precursor; 4) we have performed an extensive ligand survey for the alkyl-alkyl cross-coupling reactions and have found that electronic factors only moderately influence reactivity in the terpyridine-based catalysis and that the most dramatic effects arise from steric and solubility factors; 5) we have found that the use of bis(dialkylphosphino)methanes as ligands for nickel does not produce active catalysts for cross-coupling but rather leads to bridging hydride complexes of varying geometries; 6) we have determined that the geometry of aforementioned bridging hydride complexes is largely determined by external forces such as hydrogen bonding interactions and crystal packing forces; 7) we have found that the rate of reductive elimination of alkane from a (pyridyl-2-pyrrolide)AuMe2 complex is severely inhibited due to the rigid geometry of the pyridyl-2-pyrrolide ligand; 8) we have prepared, structurally characterized, and explored the reactivity of 1-adamantylzinc reagents as model nucleophiles for sterically challenging alkyl-alkyl cross-coupling reactions. The continued success of this work will lead to alkyl-alkyl cross-coupling catalysts with broad scope and selectivities. The work has potential to significantly impact science and technologies of interest to the DOE as the chemistry is focused on developing useful reactions using reagents that can be directly prepared from petroleum and natural gas feedstocks. Moreover, the developing synthetic chemistry can profoundly affect the way materials, fine chemicals, and drugs are made. Since the methodology we are developing can shorten existing synthetic protocols, proceed at room temperature, and operate under environmentally benign conditions, it can greatly reduce energy expenditures, especially considering the contribution of the chemical manufacturing field to the gross domestic product.

David A Vicic

2009-08-10T23:59:59.000Z

16

The Mechanism of Action of Alkylating Agents  

Science Journals Connector (OSTI)

...the Sn2 and Sn1 reactors with their known...alkylating agents on nuclear material and cell...the Sn@ and Sni reactors with their known...alkylating agents on nuclear material and cell...then there was de generation, whereas with x-rays...oegiants, although nuclear granulation similar...

G. P. Warwick

1963-09-01T23:59:59.000Z

17

Alkylation of organic aromatic compounds  

DOE Patents [OSTI]

Aromatic compounds are alkylated in a combination reactor/distillation column comprising a vessel suitable for operating between 70 C and 500 C and from 0.5 to 20 atmospheres pressure; an inert distillation packing in the lower one-third of said vessel; solid acidic catalytic material such as zeolites or an acidic cation exchange resin supported in the middle one-third of said vessel; and inert distillation packing in the upper one-third of said vessel. A benzene inlet is located near the upper end of the vessel; an olefin inlet is juxtaposed with said solid acidic catalytic material; a bottoms outlet is positioned near the bottom of said vessel for removing said cumene and ethyl benzene; and an overhead outlet is placed at the top of said vessel for removing any unreacted benzene and olefin.

Smith, L.A. Jr.; Arganbright, R.P.; Hearn, D.

1993-01-05T23:59:59.000Z

18

Alkylation of organic aromatic compounds  

DOE Patents [OSTI]

Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C[sub 2] to C[sub 10] olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80 C to 500 C, using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms. 1 fig.

Smith, L.A. Jr.

1989-07-18T23:59:59.000Z

19

Alkylation of organic aromatic compounds  

DOE Patents [OSTI]

Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C.sub.2 to C.sub.10 olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80.degree. C. to 500.degree. C., using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms.

Smith, Jr., Lawrence A. (Houston, TX)

1989-01-01T23:59:59.000Z

20

Alkylation of organic aromatic compounds  

DOE Patents [OSTI]

Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C.sub.2 to C.sub.10 olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80.degree. C. to 500.degree. C., using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms.

Smith, Jr., Lawrence A. (Bellaire, TX); Arganbright, Robert P. (Seabrook, TX); Hearn, Dennis (Houston, TX)

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Alkylation of organic aromatic compounds  

DOE Patents [OSTI]

Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C[sub 2] to C[sub 10] olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80 C to 500 C, using as the catalyst a molecular sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene to about the mid point of the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms. 1 figures.

Smith, L.A. Jr.; Arganbright, R.P.; Hearn, D.

1993-09-07T23:59:59.000Z

22

Alkylation of organic aromatic compounds  

DOE Patents [OSTI]

Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C[sub 2] to C[sub 10] olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80 C to 500 C, using as the catalyst a molecular sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms. 1 fig.

Smith, L.A. Jr.; Arganbright, R.P.; Hearn, D.

1994-06-14T23:59:59.000Z

23

Alkylation of organic aromatic compounds  

DOE Patents [OSTI]

Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C.sub.2 to C.sub.10 olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80.degree. C. to 500.degree. C., using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene to about the mid point of the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms.

Smith, Jr., Lawrence A. (Bellaire, TX); Arganbright, Robert P. (Seabrook, TX); Hearn, Dennis (Houston, TX)

1993-01-01T23:59:59.000Z

24

Present and Future Alkylation Processes in Refineries  

Science Journals Connector (OSTI)

Present and Future Alkylation Processes in Refineries ... Second, an accident at a Texas refinery released considerable amounts of gaseous HF. ... In addition, following an accident, it is uncertain whether the sprays would still be operable. ...

Lyle F. Albright

2009-01-08T23:59:59.000Z

25

Low-temperature emission spectra of 9-alkylanthracene esters: Dimer photodecomposition and monomer pair interactions in polymer hosts  

SciTech Connect (OSTI)

Effects due to variation in the alkyl chain length of photodimers of 9-alkylanthracene esters on their photodecomposition efficiencies at 12 K and, by implication, the photoproduct migration as a function of temperature within polymer hosts are investigated. It is shown that dimers with longer alkyl chains have a lower photodecomposition efficiency. The extent of photoproduct migration within the polymer following photodecomposition was also studied as a function of alkyl chain length. This migration and its modulation of the interaction between the separating monomers is shown to affect the emission spectrum. Thus, monomer migration was studied in temperature cycling experiments. It was also found, for the polymer hosts investigated - poly(methyl methacrylate), poly(vinyl chloride), and polystyrene - that these properties are host dependent. This result is probably due to the void space differences that exist among these polymers. 17 refs., 10 figs.

Salt, K.; Scott, G.W. (Univ. of California, Riverside, CA (United States))

1994-10-06T23:59:59.000Z

26

Production and Properties of Biodiesel from Algal Oils  

Science Journals Connector (OSTI)

Biodiesel is defined as the mono-alkyl esters of vegetable oils or animal fats or other materials composed of triacylglycerols. This chapter discusses the potential fuel properties of biodiesel derived from al...

Gerhard Knothe

2013-01-01T23:59:59.000Z

27

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

that is comprised of mono-alkyl esters of long chain fatty acids derived from vegetable oil or animal fats and that meets ASTM D6751. Green diesel is defined as a fuel produced...

28

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

fuel comprised of mono-alkyl esters of long chain fatty acids from biologically derived oil and fats. A biodiesel blend is defined as a fuel comprised of a specified ratio of...

29

The Potential of Biodiesel with Improved Properties to an Alternative Energy Mix  

Science Journals Connector (OSTI)

Fuels derived from renewable biological sources (biomass) are prominent among the sustainable energy sources. Biodiesel, the mono-alkyl esters of vegetable oils or animal fats, is one of the significant biomas...

Gerhard Knothe

2011-01-01T23:59:59.000Z

30

E-Print Network 3.0 - acid alkyl esters Sample Search Results  

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

31

Electrochemical method for producing a biodiesel mixture comprising fatty acid alkyl esters and glycerol  

DOE Patents [OSTI]

The present invention relates to an integrated method and system for the simultaneous production of biodiesel from free fatty acids (via esterification) and from triglycerides (via transesterification) within the same reaction chamber. More specifically, one preferred embodiment of the invention relates to a method and system for the production of biodiesel using an electrodeionization stack, wherein an ion exchange resin matrix acts as a heterogeneous catalyst for simultaneous esterification and transesterification reactions between a feedstock and a lower alcohol to produce biodiesel, wherein the feedstock contains significant levels of free fatty acid. In addition, because of the use of a heterogeneous catalyst, the glycerol and biodiesel have much lower salt concentrations than raw biodiesel produced by conventional transesterification processes. The present invention makes it much easier to purify glycerol and biodiesel.

Lin, YuPo J; St. Martin, Edward J

2013-08-13T23:59:59.000Z

32

E-Print Network 3.0 - alkyl esters perspectives Sample Search...  

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

Centre de mathmatiques Collection: Mathematics 45 Chem 350 Jasperse Ch. 6 Summary of Reaction Types, Ch. 4-6, Test 2 1. Radical Halogenation (Ch. 4) Summary: . Recognition: A....

33

Highly Effective Gene Transfection In Vivo by Alkylated Polyethylenimine  

E-Print Network [OSTI]

We mechanistically explored the effect of increased hydrophobicity of the polycation on the efficacy and specificity of gene delivery in mice. N-Alkylated linear PEIs with varying alkyl chain lengths and extent of substitution ...

Fortune, Jennifer A.

34

Catalytic Synthesis of n-Alkyl Arenes through Alkyl Group Cross-Metathesis  

E-Print Network [OSTI]

n-Alkyl arenes were prepared in a one-pot tandem dehydrogenation/olefin metathesis/hydrogenation sequence directly from alkanes and ethylbenzene. Excellent selectivity was observed when (tBuPCP)IrH[subscript 2] was paired ...

Dobereiner, Graham E.

35

Mono inverter Multi parallel PMSM -Structure and Control strategy  

E-Print Network [OSTI]

a new and original Mono inverter Multi parallel Permanent Magnet Synchronous Motor (PMSM) systemMono inverter Multi parallel PMSM - Structure and Control strategy Damien Bidarta , Maria Pietrzak, braking system...). However, a MMS with machines operating independently needs a high number of power

Boyer, Edmond

36

Mono-Energetic Gamma-ray (MEGa-ray)  

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

(MeV) spectral range. MEGa-ray Rendering In the mono-energetic gamma-ray (MEGA-ray) device, electrons and laser photons crash head-on, creating a backscatter of gamma...

37

Method of making a cyanate ester foam  

DOE Patents [OSTI]

A cyanate ester resin mixture with at least one cyanate ester resin, an isocyanate foaming resin, other co-curatives such as polyol or epoxy compounds, a surfactant, and a catalyst/water can react to form a foaming resin that can be cured at a temperature greater than 50.degree. C. to form a cyanate ester foam. The cyanate ester foam can be heated to a temperature greater than 400.degree. C. in a non-oxidative atmosphere to provide a carbonaceous char foam.

Celina, Mathias C.; Giron, Nicholas Henry

2014-08-05T23:59:59.000Z

38

Felix R. Noble Collection Accession # Artist Title Mono/Stereo Label/Cat. # Year  

E-Print Network [OSTI]

:0048 Armstrong, Louis A Remembrance Stereo Columbia 10680 #12;2001:0049 Armstrong, Louis Louis Armstrong Plays W. C. Handy Mono Columbia 591 2001:0050 Armstrong, Louis Satch Plays Fats Mono Columbia 708 2001:0051 Armstrong, Louis Ambassador Satch Mono Columbia 840 1959 2001:0052 Armstrong, Louis I Love Jazz Mono Decca

Li, X. Rong

39

E-Print Network 3.0 - alkyl-tert alkyl ethers Sample Search Results  

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

> >> 1 7198 J. Org. Chem. 1995,60, 7198-7208 Gas Phase Decomposition of Conjugate Acid Ions of Simple Summary: of ProtonatedAlkyl tert-ButylEthers RO(H)C(CH&+ (To.6 Values in meV...

40

Sensitive Analysis of Alkyl Alcohols as Decomposition Products of Alkyl Nitrites in Human Whole Blood and Urine by Headspace Capillary GC with Cryogenic Oven Trapping  

Science Journals Connector (OSTI)

......cryogenic oven trapping. | The abuse of alkyl nitrites is becoming...Sensitivity and Specificity The abuse of alkyl nitrites is becoming...them at common markets or by internet sales. The most popular alkyl...the detection of alkyl nitrite abuse in forensic science practice......

Kanako Watanabe-Suzuki; Robert R. Lemmer; Hideki Nozawa; Osamu Suzuki; Akira Ishii

2003-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Rheology of silicon carbide/vinyl ester nanocomposites  

E-Print Network [OSTI]

New York, 1999. SILICON CARBIDE/VINYL ESTER NANOCOMPOSITESRheology of Silicon Carbide/Vinyl Ester NanocompositesABSTRACT: Silicon carbide (SiC) nanoparticles with no

Yong, Virginia; Hahn, H. Thomas

2006-01-01T23:59:59.000Z

42

Pairing preferences of the model mono-valence mono-atomic ions investigated by molecular simulation  

SciTech Connect (OSTI)

We carried out a series of potential of mean force calculations to study the pairing preferences of a series of model mono-atomic 1:1 ions with evenly varied sizes. The probabilities of forming the contact ion pair (CIP) and the single water separate ion pair (SIP) were presented in the two-dimensional plots with respect to the ion sizes. The pairing preferences reflected in these plots largely agree with the empirical rule of matching ion sizes in the small and big size regions. In the region that the ion sizes are close to the size of the water molecule; however, a significant deviation from this conventional rule is observed. Our further analysis indicated that this deviation originates from the competition between CIP and the water bridging SIP state. The competition is mainly an enthalpy modulated phenomenon in which the existing of the water bridging plays a significant role.

Zhang, Qiang [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning (China) [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning (China); Department of Chemistry, Bohai University, Jinzhou 121000 (China); Zhang, Ruiting; Zhao, Ying; Li, HuanHuan; Zhuang, Wei, E-mail: wzhuang@dicp.ac.cn, E-mail: gaoyq@pku.edu.cn [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning (China)] [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning (China); Gao, Yi Qin, E-mail: wzhuang@dicp.ac.cn, E-mail: gaoyq@pku.edu.cn [College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871 (China)

2014-05-14T23:59:59.000Z

43

Distribution of Pendant Alkyl Groups in the Argonne Premium Coals  

Science Journals Connector (OSTI)

Distribution of Pendant Alkyl Groups in the Argonne Premium Coals ... Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, and Department of Chemistry, The University of Chicago, Chicago, Illinois 60637 ... The ruthenium(VIII) oxidation reaction has been employed to determine the distribution of alkyl groups that are bonded to aromatic structural elements in lignin and the Argonne Premium Coals. ...

Marcus Obeng; Leon M. Stock

1996-07-18T23:59:59.000Z

44

E-Print Network 3.0 - alkyl amides derivatives Sample Search...  

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

allylic alkylation Summary: Highly ecient kinetic resolution of 2-cyclohexenyl acetate in Pd-catalyzed allylic alkylation James... been synthesized and employed in the...

45

E-Print Network 3.0 - alkyl chain bending Sample Search Results  

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

interacting alkyl substituents Source: Collection: Chemistry 74 Low absorption liquid crystals for mid-wave infrared applications Summary: (), while keeping the alkyl chain...

46

Synthesis and Opioid Activity of [d-Pro10]Dynorphin A-(1?11) Analogues with N-Terminal Alkyl Substitution  

Science Journals Connector (OSTI)

Tyrosine tert-butyl ester (0.5?1.0 g, Sigma Chemical Co., St. Louis, MO) was dissolved in DMF (2 mL/mmol TyrOtBu), and N,N-diisopropylethylamine (DIEA, 2.5 equiv) was added to the solution dropwise, followed by alkyl bromide (6?7 equiv). ... The tert-butyl group was cleaved as described above and the free acid crystallized from Et2O (142 mg, 20%):? mp 243?244 °C; FAB-MS 222 (M + 1); HPLC tR = 3.6 min (99% purity). ...

Heekyung Choi; Thomas F. Murray; Gary E. DeLander; William K. Schmidt; Jane V. Aldrich

1997-08-15T23:59:59.000Z

47

Production of methyl tert-alkyl ethers  

SciTech Connect (OSTI)

The transition to the use of unleaded gasolines has required the replacement of tetraethyl lead by oxygen-containing compounds such as methanol, ethanol, and ethers, which are termed {open_quotes}oxygenates{close_quotes} in the technical literature. These may be used in commercial gasolines in amounts of 10-15% by volume, equivalent to 2% oxygen by weight. When methyl tert-butyl ether (MTBE) is used, the oxygen content may amount to 2.7% by weight. This oxygenate gives a significant improvement of knock resistance of naphtha fractions, the greatest effects being observed for straight-run naphthas and reformer naphthas produced under normal conditions; the MTBE also improves the engine power and economy characteristics and lowers the carbon monoxide content in the exhaust by 15-30% and the hydrocarbon content by 7-8%. This paper describes methods for the production of MTBE and also methyl tert-alkyl ethers.

Trofimov, V.A.

1995-01-01T23:59:59.000Z

48

Synthesis of a new energetic nitrate ester  

SciTech Connect (OSTI)

Nitrate esters have been known as useful energetic materials since the discovery of nitroglycerin by Ascanio Sobrero in 1846. The development of methods to increase the safety and utility of nitroglycerin by Alfred Nobel led to the revolutionary improvement in the utility of nitroglycerin in explosive applications in the form of dynamite. Since then, many nitrate esters have been prepared and incorporated into military applications such as double-based propellants, detonators and as energetic plasticizers. Nitrate esters have also been shown to have vasodilatory effects in humans and thus have been studied and used for treatments of ailments such as angina. The mechanism of the biological response towards nitrate esters has been elucidated recently. Interestingly, many of the nitrate esters used for military purposes are liquids (ethylene glycol dinitrate, propylene glycol dinitrate, etc). Pentaerythritol tetranitrate (PETN) is one of the only solid nitrate esters, besides nitrocellulose, that is used in any application. Unfortunately, PETN melting point is above 100 {sup o}C, and thus must be pressed as a solid for detonator applications. A more practical material would be a melt-castable explosive, for potential simplification of manufacturing processes. Herein we describe the synthesis of a new energetic nitrate ester (1) that is a solid at ambient temperatures, has a melting point of 85-86 {sup o}C and has the highest density of any known nitrate ester composed only of carbon, hydrogen, nitrogen and oxygen. We also describe the chemical, thermal and sensitivity properties of 1 as well as some preliminary explosive performance data.

Chavez, David E [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

49

Topological insulating phases in mono and bilayer graphene  

E-Print Network [OSTI]

We analyze the influence of different quadratic interactions giving rise to time reversal invariant topological insulating phases in mono and bilayer graphene. We make use of the effective action formalism to determine the dependence of the Chern Simons coefficient on the different interactions.

Alberto Cortijo; Adolfo G. Grushin; Maria A. H. Vozmediano

2010-07-21T23:59:59.000Z

50

WHAT'S GRAPHENE? Mono or few layers of sp2 bonded  

E-Print Network [OSTI]

WHAT'S GRAPHENE? · Mono or few layers of sp2 bonded carbon atoms in a honeycomb lattice 105cm2/Vs at RT. 1 Due to its unique transport properties, graphene is suitable for implementation sampling (EOS) timeresolved spectroscopy to optically pump and THz probe exfoliated graphene ribbons (GR

Mellor-Crummey, John

51

Extraction of carbonate complexes of trivalent transplutonium elements with alkyl pyrocatechols  

SciTech Connect (OSTI)

Extraction of trivalent americium curium, californium, and europium with a technical mixture of mono-and didecyl pyrocatechols (TAP) in different diluents from carbonate solutions is studied. The influence of various factors (pH, K/sub 2/CO/sub 3/, TAP and metal concentration, phase contact time) on the degree of extraction and separation of the elements is clarified. It is shown that the elements concerned are extracted quantitatively by TAP solution in toluene and cyclohexane in the K/sub 2/CO/sub 3/ concentration range 0.25-1.5 M. A difference is noted in the coefficients of americium and curium distribution when they are extracted with TAP from 0.25 M K/sub 2/CO/sub 3/ solution. The separation coefficients of this pair rise with the pH of the carbonate solution. The separation coefficients of this pair rise with the pH of the carbonate solution. The separation can be improved at the stage of reextraction of the elements with a mixture of K/sub 2/CO/sub 3/ and DTPA or EDTA from alkyl pyrocatechol because the americium and curium reextraction rate constants differ widely. The composition of the compounds in the organic phase based on 4-(..cap alpha..,..cap alpha..-dioctylethyl)pyrocatechol (DOP) is studied by /sup 13/C NMR spectroscopy.

Karalova, Z.K.; Bukina, T.I.; Myasoedov, B.F.; Fedorov, L.A.; Sokolovskii, S.A.

1987-01-01T23:59:59.000Z

52

Adsorption of alkyl amides: monolayer structures and mixing behaviour  

E-Print Network [OSTI]

adsorbs hydrocarbons from liquid media [42-44]. Groszek [42] provided an explanation for the high affinity of the graphite surface for the hydrocarbons. The zigzag structure of the hydrocarbon fits well into the graphite hexagons (Figure 1... of the composition range. 1.3 Alkyl amides In this section the properties and applications of alkyl amides are explained, and a review of the adsorption of amides on different surfaces such as graphite, polymer surfaces and water is provided. The bulk...

Bhinde, Tej

2011-02-08T23:59:59.000Z

53

Final Technical Report [Development of Catalytic Alkylation and Fluoroalkylation Methods  

SciTech Connect (OSTI)

In the early stages of this DOE-funded research project, we sought to prepare and study a well-defined nickel-alkyl complex containing tridentate nitrogen donor ligands. We found that reaction of (TMEDA)NiMe2 (1) with terpyridine ligand cleanly led to the formation of (terpyridyl)NiMe (2), which we also determined to be an active alkylation catalyst. The thermal stability of 2 was unlike that seen for any of the active pybox ligands, and enabled a number of key studies on alkyl transfer reactions to be performed, providing new insights into the mechanism of nickel-mediated alkyl-alkyl cross-coupling reactions. In addition to the mechanistic studies, we showed that the terpyridyl nickel compounds can catalytically cross-couple alkyl iodides in yields up to 98% and bromides in yields up to 46 %. The yields for the bromides can be increased up to 67 % when the new palladium catalyst [(tpy’)Pd-Ph]I is used. The best route to the targeted [(tpy)NiBr] (1) was found to involve the comproportionation reaction of [(dme)NiBr{sub 2}] and [Ni(COD){sub 2}] in the presence of two equivalents of terpyridine. This reaction was driven to high yields of product formation (72 % isolated) by the precipitation of 1 from THF solvent.

Vicic, David A.

2014-05-01T23:59:59.000Z

54

Sensitive Analysis of Alkyl Alcohols as Decomposition Products of Alkyl Nitrites in Human Whole Blood and Urine by Headspace Capillary GC with Cryogenic Oven Trapping  

Science Journals Connector (OSTI)

......470-1192, Japan The abuse of alkyl nitrites is...oven trapping. | The abuse of alkyl nitrites is...Sensitivity and Specificity The abuse of alkyl nitrites is...abused by inhalation among young people for their aphrodisiac...common markets or by internet sales. The most popular......

Kanako Watanabe-Suzuki; Robert R. Lemmer; Hideki Nozawa; Osamu Suzuki; Akira Ishii

2003-02-01T23:59:59.000Z

55

North Shore Mono Lake Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Shore Mono Lake Geothermal Area Shore Mono Lake Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: North Shore Mono Lake Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.048205,"lon":-119.080047,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

56

Comparison of the Antiviral Activities of Alkoxyalkyl and Alkyl Esters of Cidofovir against Human and Murine Cytomegalovirus Replication In Vitro  

Science Journals Connector (OSTI)

...capacity to self-associate with the plasma membrane of the cell. However, the highly...spontaneously into the outer leaflet of the plasma membrane and are subsequently transferred...12). Once in the inner leaflet of the plasma membrane, the highly active CDV analogs...

William B. Wan; James R. Beadle; Caroll Hartline; Earl R. Kern; Stephanie L. Ciesla; Nadejda Valiaeva; Karl Y. Hostetler

2005-02-01T23:59:59.000Z

57

The infrared and Raman spectra of N-alkyl ethylenimines  

E-Print Network [OSTI]

mother, without wnose sacrifices and help none of this would have been possible. TABLE OF CONTLNTS THE INFPAR D AND P'u~'AN SP" CTPW OF N-ALKYL ETHYLENIYINES Pa8e I. Introduction. . . . , . . . . , II. Experimental. . . , . 3 III ' Discussion... be represented as follows, CH2 R ? ~ &CH 2 where R = CH3-, C2H5-, and (CH3)2CH-. It is assumed here that the alkyl group lies above the plane of the ring as does the N-H hydrogen in ethylenimine. ' ' This assumption has been supported 8 9, 11 in the case...

Ashby, Theodore Leroy

2012-06-07T23:59:59.000Z

58

E-Print Network 3.0 - allylic alkylations added Sample Search...  

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

benzyl or allyl halides. s-Alkyl... -chiral center of high optical purity based on the SN2 displace- ment reaction of alkyl cuprates on chiral allyl... A Practical and Highly...

59

E-Print Network 3.0 - asymmetric allylic alkylation Sample Search...  

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benzyl or allyl halides. s-Alkyl... -chiral center of high optical purity based on the SN2 displace- ment reaction of alkyl cuprates on chiral allyl... ) Examples of asymmetric...

60

Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl...  

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

Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl Substituents on Reactivity and Selectivity. Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl Substituents...

Note: This page contains sample records for the topic "mono alkyl ester" 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

Microbial degradation of n-alkyl tetrahydrothiophenes found in petroleum  

SciTech Connect (OSTI)

Although n-alkyl-substituted tetrahydrothiophenes are found in nonbiodegraded petroleums, they are not found in petroleums which have undergone biodegradation in their reservoirs. These observations suggested that this group of compounds with alkyl chain lengths from approximately C/sub 10/ to at least C/sub 30/ is biodegradable. Two of these sulfides, 2-n-dodecyltetrahydrothiophene (DTHT) and 2-n-undecyltetrahydrothiophene, were synthesized, and their biodegradabilities were tested by using five gram-positive, n-alkane-degrading bacterial isolates. The alkyl side chains of these compounds were oxidized, and the major intermediates found in 2-n-undecyltetrahydrothiophene- and DTHT-metabolizing cultures were 2-tetrahydrothiophenecarboxylic acid (THTC) and 2-tetrahydrothiopheneacetic acid (THTA), respectively. Four n-alkane-degrading fungi were also shown to degrade DTHT, yielding both THTA and THTC. Quantitation of tetrahydrothiophene ring-containing products in 28-day-old bacterial and fungal cultures suggested that THTC and THTA were metabolized further to unidentified products. In addition, two of the bacterial isolates were shown to degrade a mixture of n-alkyl tetrahydrothiophenes isolated from Bellshill Lake crude oil.

Fedorak, P.M.; Payzant, J.D.; Montgomery, D.S.; Westlake, D.W.S.

1988-05-01T23:59:59.000Z

62

Alkylation of Guanosine and Deoxyguanosine by Phosphoramide Mustard  

Science Journals Connector (OSTI)

...Phosphoramide mustard, an active metabolite of cyclophosphamide...Phosphoramide mustard, an active metabolite of cyclophos...acrolein (1) and an active alkylating agent, phosphoramide...adducts which it forms. MATERIALS AND METHODS Crystalline...field emitter anode and cathode; 8 kV acceler ating...

Jitendra R. Mehta; Michael Przybylski; and David B. Ludlum

1980-11-01T23:59:59.000Z

63

Ester, Alaska: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Ester, Alaska: Energy Resources Ester, Alaska: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 64.8472222°, -148.0144444° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":64.8472222,"lon":-148.0144444,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

64

Mono-Higgs Detection of Dark Matter at the LHC  

E-Print Network [OSTI]

Motivated by the recent discovery of the Higgs boson, we investigate the possibility that a missing energy plus Higgs final state is the dominant signal channel for dark matter at the LHC. We consider examples of higher-dimension operators where a Higgs and dark matter pair are produced through an off-shell Z or photon, finding potential sensitivity at the LHC to cutoff scales of around a few hundred GeV. We generalize this production mechanism to a simplified model by introducing a Z' as well as a second Higgs doublet, where the pseudoscalar couples to dark matter. Resonant production of the Z' which decays to a Higgs plus invisible particles gives rise to a potential mono-Higgs signal. This may be observable at the 14 TeV LHC at low tan beta and when the Z' mass is roughly in the range 600 GeV to 1.3 TeV.

Berlin, Asher; Wang, Lian-Tao

2014-01-01T23:59:59.000Z

65

Mono-Higgs Detection of Dark Matter at the LHC  

E-Print Network [OSTI]

Motivated by the recent discovery of the Higgs boson, we investigate the possibility that a missing energy plus Higgs final state is the dominant signal channel for dark matter at the LHC. We consider examples of higher-dimension operators where a Higgs and dark matter pair are produced through an off-shell Z or photon, finding potential sensitivity at the LHC to cutoff scales of around a few hundred GeV. We generalize this production mechanism to a simplified model by introducing a Z' as well as a second Higgs doublet, where the pseudoscalar couples to dark matter. Resonant production of the Z' which decays to a Higgs plus invisible particles gives rise to a potential mono-Higgs signal. This may be observable at the 14 TeV LHC at low tan beta and when the Z' mass is roughly in the range 600 GeV to 1.3 TeV.

Asher Berlin; Tongyan Lin; Lian-Tao Wang

2014-02-27T23:59:59.000Z

66

Preparation of {alpha},{beta}-unsaturated carboxylic acids and esters  

DOE Patents [OSTI]

Disclosed is a process for the preparation of {alpha},{beta}-unsaturated carboxylic acids and esters thereof which comprises contacting formaldehyde or a source of formaldehyde with a carboxylic acid, ester or anhydride in the presence of a catalyst comprising an oxide of niobium.

Gogate, M.R.; Spivey, J.J.; Zoeller, J.R.

1998-09-15T23:59:59.000Z

67

E-Print Network 3.0 - activated ester self-assembled Sample Search...  

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

ester) Summary: behavior of DNA with the polymer to form self-assembled PHP esterDNA complexes was characterized... 3 and 4). Condensation of Polyanion by...

68

E-Print Network 3.0 - acid esters evaluated Sample Search Results  

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

Abstract... This paper describes an exploratory study on the synthesis of fatty acidpotato starch esters using... : potato starch, fatty acid starch esters, starch laurate, ......

69

E-Print Network 3.0 - alkylating agents synthesis Sample Search...  

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

Natural Product Leinamycin Summary: , the antitumor natural product leina- mycin (LM) (1, 2) is converted to a potent DNA-alkylating agent via... the sequence specificity...

70

E-Print Network 3.0 - alkylating agents Sample Search Results  

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

Natural Product Leinamycin Summary: , the antitumor natural product leina- mycin (LM) (1, 2) is converted to a potent DNA-alkylating agent via... the sequence specificity...

71

E-Print Network 3.0 - alkylating agents evaluacion Sample Search...  

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

Natural Product Leinamycin Summary: , the antitumor natural product leina- mycin (LM) (1, 2) is converted to a potent DNA-alkylating agent via... the sequence specificity...

72

Development of the Lower Mono River Valley, West Africa: A Case Study  

Science Journals Connector (OSTI)

The potential of developing the agricultural sector in the lower Mono River valley in Togo and Benin was studied at prefeasibility level in 1983 and 1984. The measures proposed to overcome the frequent floodin...

P. N. Lewis

1986-01-01T23:59:59.000Z

73

E-Print Network 3.0 - alicyclic mono- di- Sample Search Results  

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

diamine mono hydrochloride 6.0 g FeCl3 . 6 H20 6 N HCl The dye solution is a strong acid. Wear a lab coat... -centrifuge tubes into the scintillation vials. Pipette 25 l DI...

74

E-Print Network 3.0 - al mono obeso Sample Search Results  

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obeso Search Powered by Explorit Topic List Advanced Search Sample search results for: al mono obeso Page: << < 1 2 3 4 5 > >> 1 Reproductive biology of Arum italicum (Araceae)...

75

Production of 5-Hydroxymethylfurfural from Mono- and Disaccharides in the Presence of Ionic Liquids  

Science Journals Connector (OSTI)

The one-pot dehydration/hydrolysis of mono- and disaccharides to 5-hydroxymethylfurfural (HMF) in the presence of several...4], a HMF yield of 87 % was achieved from sucrose. In addition, [AMIM]Cl revealed a rema...

Jincai Shi; Wentao Liu; Ningning Wang; Yan Yang; Haijun Wang

2014-02-01T23:59:59.000Z

76

Nickel-catalyzed Suzuki-Miyaura reactions of unactivated halides with alkyl boranes and planar-chiral borabenzene catalysts for Diels-Alder reactions  

E-Print Network [OSTI]

Part I describes the expansion in scope of a nickel-catalyzed coupling reaction of unactivated alkyl bromides and alkyl boranes to include unactivated alkyl chlorides. The new method is adapted for use outside of a glove ...

Lu, Zhe

2010-01-01T23:59:59.000Z

77

Coaxial Mono-Energetic Gamma Generator for Active Interrogation  

SciTech Connect (OSTI)

Compact mono-energetic photon sources are sought for active interrogation systems to detect shielded special nuclear materials in, for example, cargo containers, trucks and other vehicles. A prototype gamma interrogation source has been designed and built that utilizes the 11B(p,gamma)12C reaction to produce 12 MeV gamma-rays which are near the peak of the photofission cross section. In particular, the 11B(p,gamma)12C resonance at 163 kV allows the production of gammas at low proton acceleration voltages, thus keeping the design of a gamma generator comparatively small and simple. A coaxial design has been adopted with a toroidal-shaped plasma chamber surrounding a cylindrical gamma production target. The plasma discharge is driven by a 2 MHz rf-power supply (capable up to 50 kW) using a circular rf-antenna. Permanent magnets embedded in the walls of the plasma chamber generate a multi-cusp field that confines the plasma and allows higher plasma densities and lower gas pressures. About 100 proton beamlets are extracted through a slotted plasma electrode towards the target at the center of the device that is at a negative 180 kV. The target consists of LaB6 tiles that are brazed to a water-cooled cylindrical structure. The generator is designed to operate at 500 Hz with 20 mu s long pulses, and a 1percent duty factor by pulsing the ion source rf-power. A first-generation coaxial gamma source has been built for low duty factor experiments and testing.

Ludewigt, Bernhard A.; Antolak, A.J.; Henestroza, E.; Leitner, M.; Leung, K.-N.; Waldron, W.; Wilde, S.; Kwan, J.W.

2008-08-01T23:59:59.000Z

78

Year/PAD District Alkylates Aromatics Road Oil  

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

Alkylates Alkylates Aromatics Road Oil and Lubricants Petroleum Coke (MMcfd) Hydrogen Sulfur (short tons/day) Production Capacity Asphalt Isomers Marketable Table 7. Operable Production Capacity of Petroleum Refineries, January 1, 1981 to January 1, 2013 (Thousand Barrels per Stream Day, Except Where Noted) a JAN 1, 1981 974 299 765 131 234 276 2,054 NA JAN 1, 1982 984 290 740 162 242 267 1,944 NA JAN 1, 1983 960 237 722 212 241 296 2,298 NA JAN 1, 1984 945 218 800 208 241 407 2,444 NA JAN 1, 1985 917 215 767 219 243 424 2,572 NA JAN 1, 1986 941 276 804 258 246 356 2,357 NA JAN 1, 1987 974 287 788 326 250 364 2,569 23,806 JAN 1, 1988 993 289 788 465 232 368 2,418 27,639 JAN 1, 1989 1,015 290 823 469 230 333 2,501 28,369 JAN 1, 1990 1,030 290 844 456 232 341 2,607 24,202

79

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.

80

Synthesis and Decarboxylative Coupling of Sulfonyl Acetic Esters  

E-Print Network [OSTI]

The synthesis and palladium-catalyzed decarboxylative allylation (DCA) of ?-sulfonyl allyl esters is the central focus of this dissertation. Specifically we describe the development of the racemic reaction in which the scope and mechanism...

Weaver, Jimmie Dean

2010-04-28T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

MAGNESIUM MONO POTASSIUM PHOSPHATE GROUT FOR P-REACTOR VESSEL IN-SITU DECOMISSIONING  

SciTech Connect (OSTI)

The objective of this report is to document laboratory testing of magnesium mono potassium phosphate grouts for P-Reactor vessel in-situ decommissioning. Magnesium mono potassium phosphate cement-based grout was identified as candidate material for filling (physically stabilizing) the 105-P Reactor vessel (RV) because it is less alkaline than portland cement-based grout (pH of about 12.4). A less alkaline material ({<=} 10.5) was desired to address a potential materials compatibility issue caused by corrosion of aluminum metal in highly alkaline environments such as that encountered in portland cement grouts. Information concerning access points into the P-Reactor vessel and amount of aluminum metal in the vessel is provided elsewhere. Fresh and cured properties were measured for: (1) commercially blended magnesium mono potassium phosphate packaged grouts, (2) commercially available binders blended with inert fillers at SRNL, (3) grouts prepared from technical grade MgO and KH{sub 2}PO{sub 4} and inert fillers (quartz sands, Class F fly ash), and (4) Ceramicrete{reg_sign} magnesium mono potassium phosphate-based grouts prepared at Argonne National Laboratory. Boric acid was evaluated as a set retarder in the magnesium mono potassium phosphate mixes.

Langton, C.; Stefanko, D.

2011-01-05T23:59:59.000Z

82

Methane, Nonmethane Hydrocarbons, Alkyl Nitrates, and Chlorinated Carbon  

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

Atmospheric Trace Gases in Whole-Air Samples Atmospheric Trace Gases in Whole-Air Samples Methane, Nonmethane Hydrocarbons, Alkyl Nitrates, and Chlorinated Carbon Compounds including 3 Chlorofluorocarbons (CFC-11, CFC-12, and CFC-113) in Whole-air Samples graphics Graphics data Data Investigator Donald Blake Department of Chemistry, University of California Irvine, California, 92697 USA Period of Record April 1979 - December 2012 Methods Whole-air samples are collected in conditioned, evacuated, 2-L stainless steel canisters; each canister is filled to ambient pressure over a period of about 1 minute (approximately 20 seconds to 2 minutes). These canisters are returned to the University of California at Irvine for chromatographic analysis. Analysis for methane includes gas chromatography with flame ionization, as

83

Palladium-catalyzed allylic alkylation via decarboxylative and retro-Claisen C-C cleavage methods  

E-Print Network [OSTI]

Presented herein is the development of new methods for Pd-catalyzed allylic alkylation with a central focus on reactions that generate molecular complexity rapidly with little waste byproduct. With this simply stated, yet ...

Grenning, Alexander James

2012-05-31T23:59:59.000Z

84

E-Print Network 3.0 - alkylation response protein Sample Search...  

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

Summary: -DNA methyltransferases such as Ada and Ogt in E. coli and MGMT (or AGT) in humans. These proteins directly remove alkyl... purified proteins have been reported only for...

85

E-Print Network 3.0 - alkylating agent monobromobimane Sample...  

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

Naphthoate and Central Amide in Sequence-Dependent Summary: . In these assays, a 100-fold excess of agents was used in order to provide measurable alkylation yields in single......

86

1208 Organometallics1988,7,1208-1213 Copper(I) Alkyls. Synthesis and Characterization of Tertiary  

E-Print Network [OSTI]

-Champaign, Urbana, Illinois 61801 Received December 28. 1986 Alkylation of copper(I1)acetate reflections and 62 variables. Introduction Lithium dialkylcuprates, LiCuR2,are used extensively in organic

Girolami, Gregory S.

87

E-Print Network 3.0 - alkyl methyl ketones Sample Search Results  

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

l S e m e s t e r 1 9 9 7 Summary: . These acetylides are nucleophilic enough to undergo SN2 reactions with alkyl halides. There are two steps involved... : (a) formation of the...

88

Performance limits of tunnel transistors based on mono-layer transition-metal dichalcogenides  

SciTech Connect (OSTI)

Performance limits of tunnel field-effect transistors based on mono-layer transition metal dichalcogenides are investigated through numerical quantum mechanical simulations. The atomic mono-layer nature of the devices results in a much smaller natural length ?, leading to much larger electric field inside the tunneling diodes. As a result, the inter-band tunneling currents are found to be very high as long as ultra-thin high-k gate dielectric is possible. The highest on-state driving current is found to be close to 600??A/?m at V{sub g}?=?V{sub d}?=?0.5?V when 2?nm thin HfO{sub 2} layer is used for gate dielectric, outperforming most of the conventional semiconductor tunnel transistors. In the five simulated transition-metal dichalcogenides, mono-layer WSe{sub 2} based tunnel field-effect transistor shows the best potential. Deep analysis reveals that there is plenty room to further enhance the device performance by either geometry, alloy, or strain engineering on these mono-layer materials.

Jiang, Xiang-Wei, E-mail: xwjiang@semi.ac.cn; Li, Shu-Shen [State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 (China); Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

2014-05-12T23:59:59.000Z

89

BWeb Notes for Chapter 5: Water Flows in the Mono Basin  

E-Print Network [OSTI]

pools of water stranded by the receding lake as well as evaporation from ground water brought and Power Water Conservation: The LADWP secure a low-cost source of water by helping its customers investBWeb Notes for Chapter 5: Water Flows in the Mono Basin Most of the BWeb notes in chapter 5 refer

Ford, Andrew

90

Lane Detection (Part I): Mono-Vision Based Method 1 Comprehensive Extrinsic Calibration  

E-Print Network [OSTI]

, the ground coordinates system, and the vehicle coordinates system. The proposed method is mainly based, the ground coordinates system, and the vehicle coordinates system. There are two kinds of needsLane Detection (Part I): Mono-Vision Based Method 1 RT no 438 Comprehensive Extrinsic Calibration

Paris-Sud XI, Université de

91

An angular multigrid method for computing mono-energetic particle beams in Flatland  

E-Print Network [OSTI]

An angular multigrid method for computing mono-energetic particle beams in Flatland Christoph B: Beams of microscopic particles penetrating scattering background matter play an important role in several applications. The parameter choices made here are motivated by the problem of electron-beam cancer

MacLachlan, Scott

92

MONO-TEMPORAL GIS UPDATE ASSISTANCE SYSTEM BASED ON UNSUPERVISED COHERENCE ANALYSIS AND EVOLUTIONARY OPTIMISATION  

E-Print Network [OSTI]

MONO-TEMPORAL GIS UPDATE ASSISTANCE SYSTEM BASED ON UNSUPERVISED COHERENCE ANALYSIS-automation ABSTRACT: Data in Geo Information Systems (GIS) is used for map services and various applications. Thus-automatically analyse up-to-date satellite image data to narrow down areas that have to be considered for GIS updates

93

E-Print Network 3.0 - acid dimethyl ester Sample Search Results  

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

and Properties of Higher Fatty Esters of Corn Starch Summary: fatty esters (C8C18) of potato starch and corn amylose using fatty acid chlorides and pyridine... exploratory...

94

Electrophilic Metal Alkyl Chemistry in New Ligand Environments  

SciTech Connect (OSTI)

The goals of this project were to design new electrophilic metal alkyl complexes and to exploit these systems in fundamental studies of olefin polymerization and other important and new catalytic reactions. A key target reaction is insertion copolymerization of olefins and polar CH2=CHX vinyl monomers such as vinyl halides and vinyl ethers. During the period covered by this report we (i) investigated the properties of ortho-alkoxy-arylphosphine ligands in Ni-based olefin polymerization catalysts, (ii) studied the synthesis of double-end-capped polyethylene using group 4 metal catalysts that contain tris-pyrazolylborate ligands, (iii) explored the ethylene insertion reactivity of group 4 metal tris-pyrazolyl-borate complexes, (iv) showed that (?-diimine)PdMe{sup +} species undergo multiple insertion of silyl vinyl ethers, (v) synthesized and explored the reactivity of base-free Ni benzyl complexes that contain ortho-phosphino-arene sulfonate ligands, (vi) established the mechanism of the reaction of vinyl chloride with (?-diimine)PdMe{sup +} catalysts, (vii) explored the role of cationic polymerization and insertion chemistry in the reactions of vinyl ethers with (?-diimine)PdMe{sup +} species, (viii) discovered a new class of self-assembled tetranuclear Pd catalysts that produce high molecular weight linear polyethylene and copolymerize ethylene and vinyl fluoride, and (ix) developed model systems that enabled investigation of cis-trans isomerization of {phosphine-sulfonate}Pd(II) complexes.

Jordan, Richard F. [University of Chicago] University of Chicago

2013-06-30T23:59:59.000Z

95

E-Print Network 3.0 - acid esters inhibit Sample Search Results  

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

Surfaces Summary: for catalysis or inhibition however. Recent studies with agrochemicals possessing carboxylic acid ester... . Keywords: Naptalam; amide hydrolysis; metal...

96

Cross-Couplings of Unactivated Secondary Alkyl Halides: Room-Temperature Nickel-Catalyzed Negishi Reactions of Alkyl Bromides and Iodides  

E-Print Network [OSTI]

-carbon bonds.1 To date, most studies of these processes have focused on forming Csp2-Csp2 (particularly biaryl-coupling catalysts for generating Csp3-Csp3 bonds.2 The availability of general methods for building the latter set to constructing Csp3-Csp3 bonds via metal- catalyzed cross-couplings of alkyl electrophiles with alkylmetals

Fu, Gregory C.

97

Mono Hot Springs Pool & Spa Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Hot Springs Pool & Spa Low Temperature Geothermal Facility Hot Springs Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Mono Hot Springs Pool & Spa Low Temperature Geothermal Facility Facility Mono Hot Springs Sector Geothermal energy Type Pool and Spa Location Fresno, California Coordinates 36.7477272°, -119.7723661° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

98

High-efficiency graphene nanomesh magnets realized by controlling mono-hydrogenation of pore edges  

SciTech Connect (OSTI)

We demonstrate a drastic improvement in the efficiency of rare-element-free graphene nanomesh (GNM) magnets with saturation magnetization values as large as ?10{sup ?4?}emu/mm{sup 2}, which are 10–100 times greater than those in previous GNM magnets hydrogenated by only annealing under a hydrogen molecule (H{sub 2}) atmosphere, even at room temperature. This improvement is realized by a significant increase in the area of the mono-H-terminated pore edges by using hydrogen silsesquioxane resist treatment with electron beam irradiation, which can produce mono-H by detaching H-silicon (Si) bonds. This result must open the door for industrial applications of graphene magnets to rare-element-free magnetic and spintronic systems.

Kato, T.; Kamijyo, J.; Kobayashi, T.; Yagi, Y.; Haruyama, J., E-mail: J-haru@ee.aoyama.ac.jp [Faculty of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258 (Japan); Nakamura, T. [Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)

2014-06-23T23:59:59.000Z

99

SYNTHESE EN FRANAIS TITRE: NEUTRONIC STUDY OF THE MONO-RECYCLING OF AMERICIUM IN PWR  

E-Print Network [OSTI]

AND OF THE CORE CONVERSION IN MNSR USING THE MURE CODE R�SUM� Le code MURE est basé sur le couplage d'un code questions : le mono- recyclage de l'Am dans les réacteurs français de type REP et la conversion du coeur du MNSR (Miniature Neutron Source Reactor) au Ghana d'un combustible à uranium hautement enrichi (HEU

Paris-Sud XI, Université de

100

Potential impact on water resources from future volcanic eruptions at Long Valley, Mono County, California, U.S.A.  

Science Journals Connector (OSTI)

Earthquakes, ground deformation, and increased geothermal activity at Long Valley caldera after mid-1980 suggest the possibility ... Mono Basin plus surface and groundwater in Owens Valley accounts for about 80 p...

R. Forrest Hopson

Note: This page contains sample records for the topic "mono alkyl ester" 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

Dose-dependent cytotoxic and mutagenic effects of antineoplastic alkylating agents on human lymphoblastoid cells  

SciTech Connect (OSTI)

The alkylating agents in clinical use as antineoplastics are strongly implicated as human carcinogens on the basis of animal studies and human epidemiologic studies. However, there is little quantitative information on the extent to which exposure to these drugs is mutagenic for normal (non-malignant) cells and the extent to which such mutagenicity correlates with cytotoxicity of these agents. Human lymphoblastoid cells (WIL2-NS) were exposed to graded doses of eight antineoplastic alkylating agents. Dose-dependent decreases in survival were used to calculate IC{sub 50}s for each of the drugs tested. The mutagenicity of these agents is correlated strongly with cytotoxicity. These results quantitate the dose-dependent cytotoxic and mutagenic effects of these bifunctional alkylating agents on human cells. All are cytotoxic and mutagenic, although their mutagenic efficiency varies.

Sanderson, B.J.S.; Johnson, K.J.; Henner, W.D. (Oregon Health Sciences Univ., Portland (United States))

1991-01-01T23:59:59.000Z

102

Phosphate ester inhibitors solve naphthenic acid corrosion problems  

SciTech Connect (OSTI)

Crude oils containing naphthenic acids can cause a variety of corrosion problems in any of several process areas. But because of the complexity of naphthenic acid corrosion, no routine technique is available for predicting corrosion from this source. Certain high-temperature corrosion inhibitors with a general phosphate ester structure have shown good mitigation of naphthenic acid corrosion in commercial applications. A description of two such cases will help refiners know what to look for to prevent similar occurrences in their plants.

Babaian-Kibala, E. (Nalco Chemical Co., Sugar Land, TX (United States))

1994-02-28T23:59:59.000Z

103

Catalytic Hydrothermal Conversion of Triglycerides to Non-ester Biofuels  

Science Journals Connector (OSTI)

Catalytic Hydrothermal Conversion of Triglycerides to Non-ester Biofuels ... Results derived from soybean oil, jatropha oil, and tung oil show that certain biofuel fractions met JP-8 specifications and Navy distillate specifications. ... Therefore, tung-oil-derived CH biofuel will have added value as a blend stock for existing FT jet fuels and emerging biofuels such as those produced from the UOP/ENI EcofiningTM process to meet fuel specifications by increasing density and aromatic content. ...

Lixiong Li; Edward Coppola; Jeffrey Rine; Jonathan L. Miller; Devin Walker

2010-01-13T23:59:59.000Z

104

Adsorption studies of phthalic acid esters in aqueous solutions  

E-Print Network [OSTI]

they are produced in large quantities and are frequently found in environmental samples. Montmorillonite, kaolinite, Ca-montmorillonite, calcite, and a sediment sample were used as representative marine particulates. Both phthalic acid esters were adsorbed onto... and desorbed from the solid adsorbents and the glass test tubes used in the adsorption experiments . A study of the kinetics of phthal ate adsorption showed that equilibrium was attained after 12 hours. At equilibrium, the amount of phthalate bound to a...

Sullivan, Kevin Francis

2012-06-07T23:59:59.000Z

105

Properties and Performance of Levulinate Esters as Diesel Blend Components  

Science Journals Connector (OSTI)

The esters were treated with the cetane-enhancing compound 2-ethyl hexyl nitrate and were tested as blends with diesel fuel in a 2008 model year Cummins ISB engine with the measurement of regulated pollutant emissions over the federal heavy duty diesel transient cycle. ... The various approaches to biomass conversion can be divided into two general types: thermochemical (gasification, pyrolysis, acid hydrolysis, combustion, and liquefaction) and biochemical (fermentation, enzymatic hydrolysis, and anaerobic and aerobic digestion). ...

Earl Christensen; Aaron Williams; Stephen Paul; Steve Burton; Robert L. McCormick

2011-10-05T23:59:59.000Z

106

Syntheses of 11 F-labeled carboxylic esters within a  

E-Print Network [OSTI]

and with reduced infusion rate. Radioactive methyl ester 4b was obtained from the reaction of 1 (10 mM) with 2b in 56% decay-corrected radiochemical yield (RCY) at an infusion rate of 10 mL min21 , and when the infusion rate was reduced to 1 mL min21 , the RCY increased to 88%. The synthesis of the non

Shen, Jun

107

Sorption of Phthalate Esters and PCBs in a Marine Ecosystem  

E-Print Network [OSTI]

Sorption of Phthalate Esters and PCBs in a Marine Ecosystem C H E R Y L E . M A C K I N T O S H to particulate matter in aquatic environments. Sorption plays a key role in controlling the long-term fate of the sorption of many commercial DPEs do not exist. To characterize the sorptive nature of DPEs in a real

Gobas, Frank

108

Effect of Polyethylene Glycol, Alkyl, and Oligonucleotide Spacers on the Binding, Secondary Structure, and Self-Assembly of Fractalkine  

E-Print Network [OSTI]

Effect of Polyethylene Glycol, Alkyl, and Oligonucleotide Spacers on the Binding, Secondary-amphiphiles with no spacer (NoSPR), polyethylene glycol (PEG4, PEG8, PEG24), alkyl (C12 and C24), or oligonucleotide (T10 a polyethylene glycol (PEG) or an oligo-T (thymine) spacer is added to the aptamer, especially when attaching

Kokkoli, Efie

109

Gas/particle partitioning of total alkyl nitrates observed with TD-LIF in Bakersfield  

E-Print Network [OSTI]

total AN (gas + aerosol) and ANaer show that on average 21% of ANs are in the condensed phaseGas/particle partitioning of total alkyl nitrates observed with TD-LIF in Bakersfield A. W. Rollins samples. These measurements show that ANs are a ubiquitous component of the OA with the ­ONO2 subunit

Cohen, Ronald C.

110

Serendipitous alkylation of a Plk1 ligand uncovers a new binding channel  

E-Print Network [OSTI]

We obtained unanticipated synthetic byproducts from alkylation of the ?[superscript 1] nitrogen (N3) of the histidine imidazole ring of the polo-like kinase-1 (Plk1) polo-box domain (PBD)-binding peptide PLHSpT. For the ...

Lim, Dan

111

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

DOE Patents [OSTI]

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

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

1999-06-15T23:59:59.000Z

112

Whitesides et al. f Reaction ctfAlkyl Halides with Magnesiunt Mechanismof Formationof GrignardReagents.  

E-Print Network [OSTI]

carbanionsand carbonium ionsare not intermediates,and tliat the transition-itut. structuredoesnot resemblean SN2.rnagncsiumatom at the mctal surface(or possibly in solution) rrrrghtdisplacehelidefrotncarbonin an SN2-likc rcuctionor inrcrlWhitesides et al. f Reaction ctfAlkyl Halides with Magnesiunt Mechanismof Formationof Grignard

Prentiss, Mara

113

Esters of propane-1,3-diboric and propane-1,3-dithioboric acids  

Science Journals Connector (OSTI)

The polymer formed by hydroborating boron-trialkyl reacts with methyl borate, giving the tetramethyl ester of propane-1,3-diboric acid.

B. M. Mikhailov; V. F. Pozdnev

1962-10-01T23:59:59.000Z

114

E-Print Network 3.0 - acid diethyl ester Sample Search Results  

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

University Collection: Chemistry 98 RAFT Polymerization of a Novel Activated Ester Monomer and Conversion to a Terpyridine-Containing Homopolymer Summary: -succinimide...

115

E-Print Network 3.0 - antiproliferative cephalotaxus esters Sample...  

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

JP, Perchellet EM. Phorbol ester tumor promoters and multistage skin carcinogenesis. ISI Atlas... . Perchellet EM, Gali HU, Gao XM, Perchellet JP. Ability of the nonphorbol...

116

E-Print Network 3.0 - activated ester terminated Sample Search...  

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

and Developmental Biology, University of Michigan Collection: Biology and Medicine 39 Synthesis of Higher Fatty Acid Starch Esters using Vinyl Laurate and Stearate as Reactants...

117

Searching for dark matter at LHC with Mono-Higgs production  

E-Print Network [OSTI]

We consider LHC searches for dark matter in the mono-Higgs channel using the tools of effective field theory. This channel takes unique advantage of the presence of $SU(2)_L$ breaking in those operators to avoid the need for any initial-state radiation, usually necessary to tag the production of invisible particles. We find that sensitivities to parameters describing dark matter interactions with standard model particles are comparable to those from monojet searches for a subset of the usually-considered operators, and we present for the first time bounds from collider searches on operators which couple DM to only the Higgs field or its covariant derivatives.

Alexey A. Petrov; William Shepherd

2013-11-06T23:59:59.000Z

118

Dark matter searches in the mono-Z channel at high energy e+e? colliders  

Science Journals Connector (OSTI)

We explore the mono-Z signature for dark matter searches at future high energy e+e? colliders. In the context of effective field theory, we consider two kinds of contact operators describing dark matter interactions with electroweak gauge bosons and with electron/positron, respectively. For five benchmark models, we propose kinematic cuts to distinguish signals from backgrounds for both charged leptonic and hadronic decay modes of the Z boson. We also present the experimental sensitivity to cutoff scales of effective operators and compare it with that of the Fermi-LAT indirect search and demonstrate the gains in significance for the several configurations of polarized beams.

Zhao-Huan Yu; Xiao-Jun Bi; Qi-Shu Yan; Peng-Fei Yin

2014-09-10T23:59:59.000Z

119

Isotope-specific detection of low density materials with mono-energetic (gamma)-rays  

SciTech Connect (OSTI)

The first demonstration of isotope-specific detection of a low-Z, low density object, shielded by a high-Z and high density material using mono-energetic gamma-rays is reported. Isotope-specific detection of LiH shielded by Pb and Al is accomplished using the nuclear resonance fluorescence line of {sup 7}Li at 0.478 MeV. Resonant photons are produced via laser-based Compton scattering. The detection techniques are general and the confidence level obtained is shown to be superior to that yielded by conventional x-ray/{gamma}-ray techniques in these situations.

Albert, F; Anderson, S G; Gibson, D J; Hagmann, C A; Johnson, M S; Messerly, M J; Semenov, V A; Shverdin, M Y; Tremaine, A M; Hartemann, F V; Siders, C W; McNabb, D P; Barty, C J

2009-03-16T23:59:59.000Z

120

Development of a Sustainable Catalytic Ester Amidation Process  

Science Journals Connector (OSTI)

Development of a Sustainable Catalytic Ester Amidation Process ... In this paper, and as part of our ongoing interests in the advancement and uptake of green synthesis in a discovery chemistry setting,(17-19) we report our efforts to develop a significantly more sustainable process and demonstrate its applicability to the synthesis of a range of lead-like substrates. ... Overall, consideration of the isolated yields obtained with this new and sustainable coupling protocol indicates that the current method is an extremely viable alternative compared to the previously developed approach. ...

Nicola Caldwell; Craig Jamieson; Iain Simpson; Allan J. B. Watson

2013-07-30T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Investigation of the effect of low energy ion beam irradiation on mono-layer graphene  

SciTech Connect (OSTI)

In this paper, the effect of low energy irradiation on mono-layer graphene was studied. Mono-layer graphene films were irradiated with B, N and F ions at different energy and fluence. X-ray photoelectron spectroscopy indicates that foreign ions implanted at ion energies below 35 eV could dope into the graphene lattice and form new chemical bonds with carbon atoms. The results of Raman measurement indicate that ion beam irradiation causes defects and disorder to the graphene crystal structure, and the level of defects increases with increasing of ion energy and fluence. Surface morphology images also prove that ion beam irradiation creates damages to graphene film. The experiment results suggest that low-energy irradiation with energies of about 30 eV and fluences up to 5·10{sup 14} cm{sup ?2} could realize small amount of doping, while introducing weak damage to graphene. Low energy ion beam irradiation, provides a promising approach for controlled doping of graphene.

Xu, Yijun [College of Physics science and technology, Soochow University, Suzhou215006 (China) [College of Physics science and technology, Soochow University, Suzhou215006 (China); II. Physikalisches Institut, Universität Göttingen, Friedrich- Hund- Platz 1, 37077 Göttingen (Germany); State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050 (China); Zhang, Kun; Brüsewitz, Christoph; Hofsäss, Hans Christian [II. Physikalisches Institut, Universität Göttingen, Friedrich- Hund- Platz 1, 37077 Göttingen (Germany)] [II. Physikalisches Institut, Universität Göttingen, Friedrich- Hund- Platz 1, 37077 Göttingen (Germany); Wu, Xuemei [College of Physics science and technology, Soochow University, Suzhou215006 (China) [College of Physics science and technology, Soochow University, Suzhou215006 (China); State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050 (China)

2013-07-15T23:59:59.000Z

122

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

123

Spin Crossover in a Series of Iron(II) Complexes of 2-(2-Alkyl-2H-tetrazol-5-yl)-1,10-phenanthroline: Effects of Alkyl Side  

E-Print Network [OSTI]

Spin Crossover in a Series of Iron(II) Complexes of 2-(2-Alkyl-2H-tetrazol-5-yl)-1Versity, Beijing 100871, China Received October 27, 2006 2-(2H-Tetrazol-5-yl)-1,10-phenanthroline (HL0 ), its alkyl) at the 2H position of the tetrazole ring, and their iron(II) complexes (a for [Fe(L0 )2], na for [Fe(Ln)2

Gao, Song

124

Field Validation of Polyethylene Passive Air Samplers for Parent and Alkylated PAHs in Alexandria, Egypt  

Science Journals Connector (OSTI)

Field Validation of Polyethylene Passive Air Samplers for Parent and Alkylated PAHs in Alexandria, Egypt ... In Alexandria for example, eight monitoring stations were established for monitoring the atmospheric quality since the establishment of the Egyptian environmental Law (Law No. 4, 1994). ... Environmental Characterization of Alexandria, Egypt; Egyptian Environmental Affairs Agency: Cairo, 2007; www.eeaa.gov.eg/English/reports/GovProfiles/final/Alex%20Des.pdf. ...

Mohammed A. Khairy; Rainer Lohmann

2012-03-07T23:59:59.000Z

125

Summary of Substitution and Elimination Reactions of Alkyl Halides Polar protic solvent  

E-Print Network [OSTI]

will come from E2 and/or SN2, or there will be no reaction, depending upon the structure of the alkyl halide­X E2, SN2, E1/SN1 First, you need to know which products to expect from each mechanism. Second, you: 1) 1° halides will give SN2 unless the halide is hindered on the backside by branching

Walba, David

126

CVD Growth of Mono-and Bi-Layer Graphene from Ethanol Xiao Chen, Pei Zhao, Bo Hou, Shohei Chiashi and Shigeo Maruyama  

E-Print Network [OSTI]

CVD Growth of Mono- and Bi-Layer Graphene from Ethanol Xiao Chen, Pei Zhao, Bo Hou, Shohei Chiashi understood. Here we report utilizing CVD to produce mono- and bi-layer graphene from ethanol. By using ethanol as carbon source, we carefully studied the CVD parameter for the growth process, and their effects

Maruyama, Shigeo

127

Review of Evidence on the Potential for Major Earthquakes and Volcanism in the Long Valley-Mono Craters-White Mountains Regions of Eastern California  

Science Journals Connector (OSTI)

The Long Valley-Mono Craters region of eastern California lies ... volcanic centers of late-Quaternary age. The Long Valley-Mono Craters region stands out in this...M...6.8 to 8.0) have occurred along the eastern...

David P. Hill; Robert E. Wallace…

1985-01-01T23:59:59.000Z

128

On the semimetal-insulator transition and Lifshitz transition in simulations of mono-layer graphene  

E-Print Network [OSTI]

We report on the status of ongoing Hybrid-Monte-Carlo simulations of the tight-binding model of mono-layer graphene. We present results concerning the semimetal-insulator phase transition, whereby two-body interactions are modeled by a partially screened Coulomb potential which takes into account screening by electrons in the lower $\\sigma$-orbitals. We obtain evidence that finite-size effects may still be present in the current estimate of the critical coupling strength $\\alpha_C$, which was previously extracted from simulations on lattice-sizes up to $N_x=N_y=18$. We also present preliminary results concerning the Neck-disrupting Lifshitz transition which occurs at finite Fermion-density in the limit of vanishing two-body interactions. A sign-problem is circumvented by using a spin-dependent chemical potential in our simulations.

Smith, Dominik; von Smekal, Lorenz

2014-01-01T23:59:59.000Z

129

On the semimetal-insulator transition and Lifshitz transition in simulations of mono-layer graphene  

E-Print Network [OSTI]

We report on the status of ongoing Hybrid-Monte-Carlo simulations of the tight-binding model of mono-layer graphene. We present results concerning the semimetal-insulator phase transition, whereby two-body interactions are modeled by a partially screened Coulomb potential which takes into account screening by electrons in the lower $\\sigma$-orbitals. We obtain evidence that finite-size effects may still be present in the current estimate of the critical coupling strength $\\alpha_C$, which was previously extracted from simulations on lattice-sizes up to $N_x=N_y=18$. We also present preliminary results concerning the Neck-disrupting Lifshitz transition which occurs at finite Fermion-density in the limit of vanishing two-body interactions. A sign-problem is circumvented by using a spin-dependent chemical potential in our simulations.

Dominik Smith; Michael Körner; Lorenz von Smekal

2014-10-28T23:59:59.000Z

130

Structural Interactions within Lithium Salt Solvates: Cyclic Carbonates and Esters  

SciTech Connect (OSTI)

Only limited information is available regarding the manner in which cyclic carbonate and ester solvents coordinate Li+ cations in electrolyte solutions for lithium batteries. One approach to gleaning significant insight into these interactions is to examine crystalline solvate structures. To this end, eight new solvate structures are reported with ethylene carbonate, ?-butyrolactone and ?-valerolactone: (EC)3:LiClO4, (EC)2:LiClO4, (EC)2:LiBF4, (GBL)4:LiPF6, (GBL)1:LiClO4, (GVL)1:LiClO4, (GBL)1:LiBF4 and (GBL)1:LiCF3SO3. The crystal structure of (EC)1:LiCF3SO3 is also re-reported for comparison. These structures enable the factors which govern the manner in which the ions are coordinated and the ion/solvent packing—in the solid-state—to be scrutinized in detail.

Seo, D. M.; Afroz, Taliman; Allen, Joshua L.; Boyle, Paul D.; Trulove, Paul C.; De Long, Hugh C.; Henderson, Wesley A.

2014-11-13T23:59:59.000Z

131

Viscosity Dependence of the Rotational Reorientation of Rhodamine B in Mono-and Polyalcohols. Picosecond Transient Grating Experiments  

E-Print Network [OSTI]

Viscosity Dependence of the Rotational Reorientation of Rhodamine B in Mono- and Polyalcohols-Stokes-Einstein (DSE) theorywas shown to extend to much higher viscosities than previously reported. Detailed of radius R and hydrodynamic volume V rotating in a fluid continuum of macroscopic viscosity q and relates

Fayer, Michael D.

132

13C and 18O from Carbon Mono-and Dioxide, two proxies for tracing combustion sources  

E-Print Network [OSTI]

combustion Biomass burning Hydrocarbon oxydation Different isotope signals 18O-signal of CO in the atmosphere13C and 18O from Carbon Mono- and Dioxide, two proxies for tracing combustion sources Rolf Siegwolf #12;· Consequences of a traffic accident: Different sources of combustion products, a case study · Air

133

Compressed sensing of mono-static and multi-static SAR Ivana Stojanovica, W. Clem Karlb, Mujdat Cetinc,  

E-Print Network [OSTI]

if such simple metrics are related to SAR reconstruction quality in an obvious way. Keywords: SAR, sparse of day, distance, and weather. Conventional SAR radars are mono-static, with collocated transmit such simple metrics are related to reconstruction quality. The use of sparsity constrained reconstructions

Yanikoglu, Berrin

134

Interactions between Copper(II) Complexes of Mono-, Bis-, and Tris(macrocyclic) Ligands and Inorganic or Organic Guests  

E-Print Network [OSTI]

FULL PAPER Interactions between Copper(II) Complexes of Mono-, Bis-, and Tris(macrocyclic) Ligands. Prikhod'ko,[b] and Hans Pritzkow[a] Keywords: Copper / Host-guest complexes / Macrocycles / Molecular recognition Template synthesis The copper(II)-assisted condensation of [Cu(2,3,2-tet)]2+ [2,3,2-tet = bis

Nazarenko, Alexander

135

A STUDY OF FUNDAMENTAL REACTION PATHWAYS FOR TRANSITION METAL ALKYL COMPLEXES. I. THE REACTION OF A NICKEL METHYL COMPLEX WITH ALKYNES. II. THE MECHANISM OF ALDEHYDE FORMATION IN THE REACTION OF A MOLYBDENUM HYDRIDE WITH MOLYBDENUM ALKYLS  

SciTech Connect (OSTI)

I. This study reports the rapid reaction under mild conditions of internal or terminal alkynes with methyl (acetyl~ acetonato) (triphenylphosphine) nickel (1) in either aromatic or ether solvents. In all cases vinylnickel products 2 are formed by insertion of the alkyne into the nickel=methyl bond. These complexes may be converted into a variety of organic products (e.g. alkenes, esters, vinyl halides) by treatment with appropriate reagents. Unsymmetrical alkynes give selectively the one regioisomer with the sterically largest substituent next to the nickel atom. In order to investigate the stereochemistry of the initial insertion, a x-ray diffraction study of the reaction of 1 with diphenylacetylene was carried out. This showed that the vinylnickel complex formed by overall trans insertion was the product of the reaction. Furthermore, subsequent slow isomerization of this complex, to a mixture of it and the corresponding cis isomer, demonstrated that this trans addition product is the kinetic product of the reaction. In studies with other alkynes, the product of trans addition was not always exclusively (or even predominantly) formed, but the ratio of the stereoisomers formed kinetically was substantially different from the thermodynamic ratio. Isotope labeling, added phosphine, and other experiments have allowed us to conclude that the mechanism of this reaction does involve initial cis addition. However, a coordinatively unsaturated vinylnickel complex is initially formed which can undergo rapid, phosphine-catalyzed cis-trans isomerization in competition with its conversion to the isolable phosphine-substituted kinetic reaction products. II. The reaction of CpMo(CO){sub 3}H (1a) with CpMo(CO){sub 3}R (2, R= CH{sub 3}, C{sub 2}H{sub 5}) at 50{degrees} C in THF gives the aldehyde RCHO and the dimers [CpMo(CO){sub 3}]{sub 2} (3a) and [CpMo(CO){sub 2}]{sub 2} (4a). Labeling one of the reactants with a methylcyclopentadienyl ligand it was possible to show that the mixed dimers MeCpMo(CO){sub 3}-(CO){sub 3}MoCp (3b) and MeCpMo(CO){sub 2}{triple_bond}(CO){sub 2}MoCp (4b) are the predominant kinetic products of the reaction. Additionally labeling the carbonyl ligands of 1a with {sup 13}CO led to the conclusion that all three of the carbonyl ligands in 1a end up in the tetracarbonyl dimers 4a if the reaction is carried out under a continuous purge of argon Trapping studies failed to find any evidence for the intermediacy of either [CpMo(CO){sub 3}]{sup -} or [CpMo(CO){sub 3}]{sup +} in this reaction. A mechanism is proposed that involves the initial migration of the alkyl ligand in 2 to CO forming an unsaturated acyl complex which reacts with 1a to give a binuclear complex containing a three center-two electron Mo-H-Mo bond. This complex then selectively looses a carbonyl from the acyl molybdenum, migrates the hydride to that same metal, and forms a metal-metal bond. This binuclear complex with the hydride and acyl ligands on one metal reductively eliminates aldehyde, and migrates a carbonyl ligand, to give 4a directly. The other product 3a is formed by addition of two molecules of free CO to 4a.

Huggins, John Mitchell

1980-06-01T23:59:59.000Z

136

Biodiesel Basics | Department of Energy  

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

Biodiesel Basics Biodiesel Basics Biodiesel Basics July 30, 2013 - 2:43pm Addthis Looking for Biodiesel stations? Checkout the Alternative Fuels Data Center station locator. Biodiesel station locator Biodiesel is a domestically produced, renewable fuel that can be manufactured from vegetable oils, animal fats, or recycled restaurant greases. What is Biodiesel? Biodiesel is a liquid fuel made up of fatty acid alkyl esters, fatty acid methyl esters, or long-chain mono alkyl esters. It is produced from renewable sources such as new and used vegetable oils and animal fats and is a cleaner-burning replacement for petroleum-based diesel fuel. It is nontoxic and biodegradable. Like petroleum diesel, biodiesel is used to fuel compression-ignition (diesel) engines. B20, which is 20% biodiesel and 80% petroleum diesel, is

137

Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate  

Science Journals Connector (OSTI)

Hydrolysis/pyrolysis of lignocellulosic biomass always produces a mixture of sugars with distinct structures as intermediates or products. This study tried to elucidate the effects of molecular structure of sugars on their acid-catalyzed conversions in ethanol/water. Location of carbonyl group in sugars (fructose versus glucose) and steric configuration of hydroxyl groups (glucose versus galactose) significantly affected yields of levulinic acid/ester (fructose > glucose > galactose). The dehydration of fructose to 5-(hydroxymethyl)furfural produces much less soluble polymer than that from glucose and galactose, which results in high yields of levulinic acid/ester from fructose. Anhydrate sugar such as levoglucosan tends to undergo the undesirable decomposition to form less levulinic acid/ester. Catalytic behaviors of the poly-sugars (sucrose, maltose, raffinose, ?-cyclodextrins) were determined much by their basic units. However, their big molecular sizes create the steric hindrance that significantly affects their followed conversion over solid acid catalyst.

Xun Hu; Liping Wu; Yi Wang; Yao Song; Daniel Mourant; Richard Gunawan; Mortaza Gholizadeh; Chun-Zhu Li

2013-01-01T23:59:59.000Z

138

E-Print Network 3.0 - acid isopropyl ester Sample Search Results  

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

5087-5090,1988 0040-403988 3.00 + .oO Printed in Great Britain Pergamon Press plc Summary: into their corresponding esters using Jones' (acidic), and permanganate or...

139

A Csp3–Csp3 Bond Forming Reductive Condensation of ?-Keto Esters and Enolizable Carbon Pronucleophiles  

Science Journals Connector (OSTI)

The preparation of densely functionalized unsymmetrical 1,4-dicarbonyl structural motifs by a phosphorus(III)-mediated reductive condensation of ?-keto esters and enolizable carbon pronucleophiles is described. The reaction, which is initiated by Kukhtin–...

Wei Zhao; Darla M. Fink; Carolyn A. Labutta; Alexander T. Radosevich

2013-06-05T23:59:59.000Z

140

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

Note: This page contains sample records for the topic "mono alkyl ester" 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 - acid allyl ester Sample Search Results  

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

Carbons of High Summary: to this problem. This is the case of the copper-mediated SN2 substitu- tion of chiral allylic esters of defined... Ratios of Cuprate Addition on...

142

E-Print Network 3.0 - acid 2-benzothiazolylthiomethyl ester Sample...  

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

results for: acid 2-benzothiazolylthiomethyl ester Page: << < 1 2 3 4 5 > >> 1 GTQ, Chemistry 212, Dr. Glaser, FS96 --1 --GTQ on Lactones. (30 points, reaction chem., mechanistic...

143

E-Print Network 3.0 - acetoacetic acid esters Sample Search Results  

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

Sample search results for: acetoacetic acid esters Page: << < 1 2 3 4 5 > >> 1 GTQ, Chemistry 212, Dr. Glaser, FS96 --1 --GTQ on Michael Reactions. (20 points, synthesis,...

144

Synthesis of Esters from Cage-Like Unsaturated Hydrocarbons, Carboxylic Acid Anhydrides, and Water  

Science Journals Connector (OSTI)

A convenient method for the preparation of esters was developed on the basis of reaction of cage-like polycyclic olefins with carboxylic acid anhydrides and water. Mixed anhydrides were found to give rise to t...

M. K. Mamedov; E. K. Nabieva; R. A. Rasulova

145

Role of alkyl alcohol on viscosity of silica-based chemical gels for decontamination of highly radioactive nuclear facilities  

SciTech Connect (OSTI)

Silica-based chemical gel for the decontamination of nuclear facilities was prepared by using fumed silica as a viscosifier, a 0.5 M Ce (IV) solution dissolved in concentrated nitric acid as a chemical decontamination agent, and tripropylene glycol butyl ether (TPGBE) as a co-viscosifier. A new effective strategy for the preparation of the chemical gel was investigated by introducing the alkyl alcohols as organic solvents to effectively dissolve the co-viscosifier. The mixture solution of the co-viscosifier and alkyl alcohols was more effective in the control of viscosity than that of the co-viscosifier only in gel. Here, the alkyl alcohols played a key role as an effective dissolution solvent for the co-viscosifier in the preparation of the chemical gel, resulting in a reducing of the amount of the co-viscosifier and gel time compared with that of the chemical gel prepared without the alkyl alcohols. It was considered that the alkyl alcohols contributed to the effective dissolution of the co-viscosifier as well as the homogeneous mixing in the formation of the gel, while the co-viscosifier in an aqueous media of the chemical decontamination agent solution showed a lower solubility. The decontamination efficiency of the chemical gels prepared in this work using a multi-channel analyzer (MCA) showed a high decontamination efficiency of over ca. 94% and ca. 92% for Co-60 and Cs-137 contaminated on surface of the stainless steel 304, respectively. (authors)

Choi, B. S.; Yoon, S. B.; Jung, C. H.; Lee, K. W.; Moon, J. K. [Div. of Decontamination and Decommissioning Technology Development, Korea Atomic Energy Research Inst., Daedeok-daero 989-111, Yuseong-gu, Daejeon, 305-353 (Korea, Republic of)

2012-07-01T23:59:59.000Z

146

ADSORPTION/DESORPTION STUDIES ON SOLID ACID ALKYLATION CATALYSTS USING A TAPERED ELEMENT OSCILLATING MICROBALANCE (TEOM)  

E-Print Network [OSTI]

for the first time the adsorption/desorption characteristics of alkylation reactants and products on these zeolites and some mesoporous materials. Equilibrium adsorption isotherms were obtained on these catalysts using n-butane, isobutane, and propane....2.1. Zeolites 72 4.2.2. Mesoporous Materials 78 4.2.3. Chemicals 79 vi 4.3. Equilibrium Adsorption Isotherms of n-Butane, Isobutane, and Propane on b- zeolite and USY-zeolite 79 4.4. Equilibrium Adsorption Isotherms of CO2 on b-zeolite and USY-zeolite 89 4...

Gong, Kening

2008-10-23T23:59:59.000Z

147

Searching for dark matter at the LHC with a mono-Z  

Science Journals Connector (OSTI)

We investigate a mono-Z process as a potential dark matter search strategy at the LHC. In this channel a single Z boson recoils against missing transverse momentum, attributed to dark matter particles, ?, which escape the detector. This search strategy is related and complementary to monojet and monophoton searches. For illustrative purposes we consider the process qq¯???Z in a toy dark matter model, where the Z boson is emitted from either the initial state quarks or from the internal propagator. Among the signatures of this process will be a pair of muons with high pT that reconstruct to the invariant mass the Z, and large amounts of missing transverse energy. Being a purely electroweak signal, QCD and other Standard Model backgrounds are relatively easily removed with modest selection cuts. We compare the signal to Standard Model backgrounds and demonstrate that even for conservative cuts, there exist regions of parameter space where the signal may be clearly visible above background in future LHC data, allowing either new discovery potential or the possibility of supplementing information about the dark sector beyond that available from other observable channels.

Nicole F. Bell; Ahmad J. Galea; James B. Dent; Thomas D. Jacques; Lawrence M. Krauss; Thomas J. Weiler

2012-11-28T23:59:59.000Z

148

Comparative Study of Low-temperature PECVD of Amorphous Silicon using Mono-, Di-, Trisilane and Cyclohexasilane  

SciTech Connect (OSTI)

The hydrogenated amorphous silicon a-Si:H films were grown by plasma-enhanced chemical vapor deposition (PECVD) using liquid cyclohexasilane Si{sub 6}H{sub 12} (CHS). The growth rate of a-Si:H was studied as a function of substrate temperatures in the range of 30 C < T < 450 C using deposition conditions that were optimized for monosilane SiH{sub 4}. The same parameters were used for a-Si:H films grown using disilane (Si{sub 2}H{sub 6}) and trisilane (Si{sub 3}H{sub 8}) precursors. It was found that the a-Si:H film growth rate for CHS is lower with respect to those for mono-, di- and trisilane in an Ar plasma. Addition of {approx}10% of H{sub 2} dramatically increases the deposition rate for CHS-based films to {_}nm/min - a 700% increase. The as-deposited films were characterized by FTIR and Raman spectroscopy to probe the hydrogen content and local bonding environment. It was found that the films grown using Ar/H{sub 2} mixtures as carrier gas have a reduced hydrogen content relative to polysilane fragments indicating higher quality amorphous silicon.

Konstantin Pokhodnya; Joseph Sandstrom; Xuliang Dai; Philip Boudjouk; Douglas L. Schulz

2009-06-08T23:59:59.000Z

149

Wave-like aquatic propulsion of mono-hull marine vessels  

Science Journals Connector (OSTI)

The present paper describes results of the experimental investigation of a small-scale mono-hull model boat propelled by a localised flexural wave propagating along the plate of finite width forming the boat's keel. Forward propulsion of the boat was achieved through flexural wave propagation in the opposite direction, which is similar to the aquatic propulsion used in nature by stingrays. The model boat under consideration underwent a series of tests both in a Perspex water tank and in an experimental pool. In particular, the forward velocity of the boat has been measured for different frequencies and amplitudes of the flexural wave. The highest velocity achieved was 32 cm/s. The thrust and propulsive efficiency have been measured as well. The obtained value of the propulsive efficiency in the optimum regime was 51%. This indicates that the efficiency of this type of aquatic propulsion is comparable to that of dolphins and sharks (around 75%) and to that of a traditional propeller (around 70%). In contrast with a propeller though, the wave-like aquatic propulsion has the following advantages: it does not generate underwater noise and it is safe for people and marine animals.

V.V. Krylov; E. Porteous

2010-01-01T23:59:59.000Z

150

Toxicological significance of non-, mono- and di-ortho-substituted polychlorinated biphenyls in oysters from Galveston and Tampa bays  

SciTech Connect (OSTI)

Concentrations of non-ortho (77, 126, and 169), mono-ortho (105 and 118) and di-ortho (128 and 138)-substituted PCB congeners were measured in oysters from Galveston and Tampa bays, and reported toxic equivalent factors were used to assess their toxicity. Most of the relative toxicity encountered in the oysters analyzed during this study was due to the presence of planar non-ortho-PCBs, particularly congener 126. In contrast, the contribution of di-ortho-substituted PCB congeners to the total relative toxicity of the samples was negligible. On average, the contribution of each of these non-, mono-, and di-ortho-substituted PCB congeners to the total toxicity encountered in oysters from Galveston and Tampa bays were 126 > 118 [ge] 169 [ge] 105 > 77 [much gt] 138 > 128 and 126 > 118 > 169 [ge] 77 > 105 [much gt] 138 > 128, respectively. Based on the reported lower clearance rates of non-ortho- and mono-ortho-substituted PCB congeners compared to other congeners within the same chlorination level, contaminated oysters that are depurated in clean environments will lower their total PCB concentrations, but their original toxicity may not be proportionally reduced.

Sericano, J.L.; Safe, S.H.; Wade, T.L.; Brooks, J.M. (Texas A and M Univ., College Station, TX (United States))

1994-11-01T23:59:59.000Z

151

Synthesis and chemistry of cationic d sup 0 metal alkyl complexes  

SciTech Connect (OSTI)

The objective of this project is to develop new types of electrophilic metal alkyl complexes for catalytic C-H activation and olefin polymerization chemistry, and associated fundamental mechanistic studies. We have focused our efforts on four classes of early metal alkyl complexes: (1) cationic group 4 Cp{sub 2}M(R){sup +} complexes (1) which are active species in Cp{sub 2}MX{sub 2}-based Ziegler-Natta olefin polymerization catalyst systems and which catalyze productive C-H activation reactions of heterocycles, (2) neutral (dicarbollide)(Cp*)M(R) complexes (2) which are structurally are electronically very similar to 1, (3) half-sandwich complexes CpM(R){sub 2}(L){sub n}{sup +} which are highly coordinatively and electronically unsaturated, and (4) new group 5 (dicarbollide)(Cp)MR{sub 2} and (dicarbollide){sub 2} MR complexes which are more unsaturated than group 5 Cp{sub 2}M systems due to incorporation of the dicarbollide ligand.

Jordan, R.F.

1991-01-01T23:59:59.000Z

152

Alkyl Surface Treatments of Planar Zinc Oxide in Hybrid Organic/Inorganic Solar Cells  

SciTech Connect (OSTI)

Hybrid organic/inorganic solar cells have not lived up to their potential because of poor interface properties. Interfacial molecular layers provide a way of adjusting these devices to improve their performance. We have studied a prototypical system involving poly(3-hexylthiophene) (P3HT) on planar zinc oxide (ZnO) films that have been modified with two types of molecules having identical 18-carbon alkyl chain termination and different surface attachments: octadecanethiol (ODT) and octadecyltriethoxysilane (OTES). We examined the functionalized surfaces using water contact angle measurements, Kelvin probe measurements, infrared absorbance spectroscopy, and atomic force microscopy. These have shown that OTES forms disordered incomplete monolayers, while ODT is prone to develop multilayered islands. Both treatments enhance polymer ordering. However, inverted solar cell devices fabricated with these treated interfaces performed very differently. ODT improves the short circuit current (J{sub SC}), open circuit voltage (V{sub OC}), and power conversion efficiency ({eta}), while these parameters all decrease in devices constructed from OTES-treated ZnO. The differences in V{sub OC} are related to modifications of the surface dipole associated with deposition of the two types of alkyl molecules, while changes in J{sub SC} are attributed to a balance between charge transfer blocking caused by the saturated hydrocarbon and the improved hole mobility in the polymer.

Allen, C. G.; Baker, D. J.; Brenner, T. M.; Weigand, C. C.; Albin, J. M.; Steirer, K. X.; Olson, D. C.; Ladam, C.; Ginley, D. S.; Collins, R. T.; Furtak, T. E.

2012-04-26T23:59:59.000Z

153

Washing of field weathered crude oil contaminated soil with an environmentally compatible surfactant, alkyl polyglucoside  

Science Journals Connector (OSTI)

Weathered crude oil contaminated soils (COCSs), which are much more difficult to remediate than those freshly contaminated, are widespread especially at the sites of oil fields and industries. Surfactant enhanced ex situ soil washing could be used to remediate COCSs, but surfactant toxicity becomes one of the major concerns. In this study, a class of green surfactants, alkyl polyglucosides (APGs), were tested in washing the field weathered COCS with relatively high oil concentration (123 mg g?1 dry soil) from Jilin Oilfield, Northeastern China. APG1214, characterized with longer alkyl chain, was more effective than APG0810 in crude oil removal. Adding inorganic sodium salts into APG1214 solution further improved the crude oil removal efficiency (CORE). Washing parameters (temperature, washing time, agitation speed and solution/soil ratio) were investigated and further optimized integratedly with an orthogonal design. At the optimum conditions, the CORE reached 97%. GC/MS analysis showed that the proportion of small n-alkanes (C16–C23) in residual crude oil gradually increased, which was helpful to interpret the oil removal mechanism. Moreover, eminent effect on removal of large n-alkanes was achieved from the synergy between APG1214 and inorganic salts, which was opposite to the effect when they were added separately. This study demonstrated a promising way to remediate COCS with ecologically compatible surfactant and provided guidelines for its practical application.

Mei Han; Guodong Ji; Jinren Ni

2009-01-01T23:59:59.000Z

154

Nuclear magnetic resonance (N.M.R.) studies of alkyl formates and of alcohol-water azeotropes  

E-Print Network [OSTI]

from Eq. 2 for 12 Alkyl Formates in Carbon tetrachloride at 37'. Typical N. M. R. Spectrum of a Non-Azeotropic Ethanol- Water Mixture . 16 N. M. R. Spectrum Occasionally Found for Azeotropic Ethanol-Water Mixtures 17 PART I. ALKYL FORMATES... CHAPTER I. INTRODUCTION 1 It has been shown that eq. 1 applies almost exactly to the data for the alkaline hydrolysis of 9 acetate eaters (CH COOR ) in 40% 0 aqueous p - dioxane at 35 . In eq. 1, k is the second-order rate log k = l. 35 + 0. 688 o + 0...

O'Brien, Patrick William

2012-06-07T23:59:59.000Z

155

High-Octane Fuel from Refinery Exhaust Gas: Upgrading Refinery Off-Gas to High-Octane Alkylate  

SciTech Connect (OSTI)

Broad Funding Opportunity Announcement Project: Exelus is developing a method to convert olefins from oil refinery exhaust gas into alkylate, a clean-burning, high-octane component of gasoline. Traditionally, olefins must be separated from exhaust before they can be converted into another source of useful fuel. Exelus’ process uses catalysts that convert the olefin to alkylate without first separating it from the exhaust. The ability to turn up to 50% of exhaust directly into gasoline blends could result in an additional 46 million gallons of gasoline in the U.S. each year.

None

2009-12-01T23:59:59.000Z

156

Direct Functionalization of Arenes by Primary Alcohol Sulfonate Esters Catalyzed by Gold(III)  

E-Print Network [OSTI]

operating here. For electron-rich arenes, a gold(III)- mediated reaction, which seems to go through an SN2 in mediating reactions involving alkynes. In contrast, gold-catalyzed arene functionalization has been less also discovered a gold-catalyzed alkylation of arenes by epoxides.2b We report here a unique reaction

He, Chuan

157

Metathesis of tobacco fatty acid methyl esters: Generation of industrially important platform chemicals  

Science Journals Connector (OSTI)

Abstract Self-methathesis of vegetable oil based unsaturated fatty acids provide a renewable and convenient route for the preparation of a number of platform chemicals useful for the production of polymers, biolubricants and other industrial products. The present study is focused on the use of the unsaturated non-edible oil methyl esters of tobacco (Nicotiana tabacum 82.2%) self- metathesis. Metathesis was carried out reacting equimolar quantities of fatty acid methyl esters (6.8 mm) with Grubbs second generation catalyst (0.3 mm) at 40–45 °C for 36 h. The metathesized products were characterized using GC and GC–MS analysis. Self-metathesis of the tobacco methyl esters resulted in the formation of hydrocarbons, of which 9-octadecene (24%) and a cyclodecacyclododecene (19%) were found to be major. In addition 9-octadecenoic acid methyl ester (17%) and 9,12-octadecadienoic acid methyl esters (11%) were also observed. The study also discusses the molecules involved in the formation of the above intermediates which are useful for the preparation of a number of industrial products.

Yelchuri Vyshnavi; Rachapudi B.N. Prasad; Mallampalli S.L. Karuna

2013-01-01T23:59:59.000Z

158

Carbon?Oxygen Bond Forming Mechanisms in Rhenium Oxo-Alkyl Complexes  

SciTech Connect (OSTI)

Three C?X bond formation mechanisms observed in the oxidation of (HBpz{sub 3})ReO(R)(OTf) [HBpz{sub 3} = hydrotris(1-pyrazolyl)borate; R = Me, Et, and iPr; OTf = OSO{sub 2}CF{sub 3}] by dimethyl sulfoxide (DMSO) were investigated using quantum mechanics (M06//B3LYP DFT) combined with solvation (using the PBF Poisson?Boltzmann polarizable continuum solvent model). For R = Et we find the alkyl group is activated through ?-hydrogen abstraction by external base OTf{sup ?} with a free energy barrier of only 12.0 kcal/mol, leading to formation of acetaldehyde. Alternatively, ethyl migration across the M?O bond (leading to the formation of acetaldehyde and ethanol) poses a free energy barrier of 22.1 kcal/mol, and the previously proposed ?-hydrogen transfer to oxo (a 2+2 forbidden reaction) poses a barrier of 44.9 kcal/mol. The rate-determining step to formation of the final product acetaldehyde is an oxygen atom transfer from DMSO to the ethylidene, with a free energy barrier of 15.3 kcal/mol. When R = iPr, the alkyl 1,2-migration pathway becomes the more favorable pathway (both kinetically and thermodynamically), with a free energy barrier (?G{sup ?} = 11.8 kcal/mol) lower than ?-hydrogen abstraction by OTf{sup ?} (?G{sup ?} = 13.5 kcal/mol). This suggests the feasibility of utilizing this type of migration to functionalize M?R to M?OR. We also considered the nucleophilic attack of water and ammonia on the Re-ethylidene ?-carbon as a means of recovering two-electron-oxidized products from an alkane oxidation. Nucleophilic attack (with internal deprotonation of the nucleophile) is exothermic. However, the subsequent protonolysis of the Re?alkyl bond (to liberate an alcohol or amine) poses a barrier of 37.0 or 42.4 kcal/mol, respectively. Where comparisons are possible, calculated free energies agree very well with experimental measurements.

Cheng, Mu-Jeng; Nielsen, Robert J; Ahlquist, Marten; Goddard, William A

2010-01-01T23:59:59.000Z

159

Alkyl Chain Ordering of Asymmetric Phosphatidylcholines Adsorbed at a Liquid-Liquid B. L. Smiley and G. L. Richmond*  

E-Print Network [OSTI]

Alkyl Chain Ordering of Asymmetric Phosphatidylcholines Adsorbed at a Liquid-Liquid Interface B. L chain ordering in phosphatidylcholines (PCs) adsorbed from aqueous solution to a carbon tetrachloride-dimensional phases are discussed. Introduction Surfactant monolayers adsorbed at oil-water interfaces in biological

Richmond, Geraldine L.

160

Alkyl nitrate (C1-C3) depth profiles in the tropical Pacific Ocean E. E. Dahl,1,2  

E-Print Network [OSTI]

and distribution of tropo- spheric ozone. Atmospheric alkyl nitrates are normally associated with polluted air free radical processes initiated by radioactive decay or cosmic rays, enzymatically mediated reactions expedition in the equatorial Pacific, an equatorial maximum in atmospheric ethyl and isopropyl nitrate

Saltzman, Eric

Note: This page contains sample records for the topic "mono alkyl ester" 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

Reductive Alkylation of Thioamides with Grignard Reagents in the Presence of Ti(OiPr)4: Insight and Extension  

Science Journals Connector (OSTI)

The reductive alkylation of thioamides by Grignard reagents in the presence of Ti(OiPr)4 is the subject of a study involving 20 different substrates. The influence of various parameters has been evaluated, showing notably that the yields of this ...

Fabien Hermant; Ewelina Urba?ska; Sarah Seizilles de Mazancourt; Thomas Maubert; Emmanuel Nicolas; Yvan Six

2014-07-28T23:59:59.000Z

162

The Absorption Spectra of Ethylene, Deutero-Ethylene and Some Alkyl-Substituted Ethylenes in the Vacuum Ultra-Violet  

Science Journals Connector (OSTI)

1 February 1940 research-article The Absorption Spectra of Ethylene, Deutero-Ethylene and Some Alkyl-Substituted Ethylenes in the Vacuum Ultra-Violet W. C. Price W. T. Tutte The Royal Society is collaborating with JSTOR to digitize...

1940-01-01T23:59:59.000Z

163

Reactions of r-Nucleophiles with Alkyl Chlorides: Competition between SN2 and E2 Mechanisms and the  

E-Print Network [OSTI]

Reactions of r-Nucleophiles with Alkyl Chlorides: Competition between SN2 and E2 Mechanisms (SN2) and base-induced elimination (E2). As the extent of substitution in the neutral reactants through a traditional SN2 transition state, followed by an elimination step in the SN2 product ion

Lineberger, W. Carl

164

energy savings by the use of mtbe to replace alkylate in automotive gasolines  

SciTech Connect (OSTI)

This paper presents data on the differences in energy consumption in the production of leaded and unleaded AI-93 gasolines with various blend components. The authors investigate as high-octane components certain products that are more effective in use and less energy-consuming in production in comparison with alkylate. In particular, methyl tert-butyl ether (MTBE) is discussed; it is not poisonous, it has a high heat of combustion, and it does not attack materials of construction. The addition of 11% MTBE to gasoline lowers the cold start temperature of engines by 10-12 degrees. Moreover, no adjustment of the carburetor is required for the changeover to gasoline with 11% MTBE.

Englin, B.A.; Emel'yanov, V.E.; Terent'ev, G.A.; Vinogradov, A.M.

1986-07-01T23:59:59.000Z

165

ESTER, Enel integrated System for TEsts on stoRage (Smart Grid Project) |  

Open Energy Info (EERE)

ESTER, Enel integrated System for TEsts on stoRage (Smart Grid Project) ESTER, Enel integrated System for TEsts on stoRage (Smart Grid Project) Jump to: navigation, search Project Name ESTER, Enel integrated System for TEsts on stoRage Country Italy Headquarters Location Livorno, Italy Coordinates 43.551876°, 10.308011° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.551876,"lon":10.308011,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

166

Lubricant return comparison of naphthenic and polyol ester oils in R-134a household refrigeration applications  

SciTech Connect (OSTI)

This paper presents mineral oils and polyol esters as possible lubricant options for domestic refrigeration applications employing R-134a as the heat exchange fluid. A performance comparison, based on data presented, is made between the mineral oils and polyol esters evaluated. To more closely examine lubricant return with N-70 and R-134a and ensure that the oil is not contributing to any deterioration in efficiency due to its accumulation in evaporators, a special test unit was designed with a difficult oil return configuration and its performance carefully monitored. Oil return with a hydrofluorocarbon-miscible polyol ester, R-133-O was also evaluated in this setup and its performance results compared to those obtained with the naphthenic refrigeration oil.

Reyes-Gavilan, J.L.; Flak, G.T.; Tritcak, T.R. [Witco Corp., Oakland, NJ (United States)

1996-12-31T23:59:59.000Z

167

Experimental investigations on diesel engine fuelled with methyl esters of cotton seed oil  

Science Journals Connector (OSTI)

In this investigation, cotton seed methyl ester (CSME) was prepared by transesterification using potassium hydroxide (KOH) as catalyst. The engine performance was analysed with different blends of biodiesel and was compared with neat diesel. It was concluded that the lower blends of biodiesel are closer to diesel as far as thermal efficiency is concerned. In the lower blends, the brakes specific fuel consumption is also comparatively reduced. The smoke density also increases for the blends of methyl ester of cotton seed oil diesel compared to neat diesel operation. The oxides of nitrogen (NOx) emission level are decreased with the blends of methyl ester of cotton seed oil compared to neat diesel. The results proved that the use of biodiesel (produced from cotton seed oil) in compression ignition engine is a viable alternative to diesel.

M. Saravanan; A. Anbarasu; M. Loganathan

2013-01-01T23:59:59.000Z

168

Raman Scattering Sensor for Control of the Acid Alkylation Process in Gasoline Production  

SciTech Connect (OSTI)

Gasoline refineries utilize a process called acid alkylation to increase the octane rating of blended gasoline, and this is the single most expensive process in the refinery. For process efficiency and safety reasons, the sulfuric acid can only be used while it is in the concentration range of 98 to 86 %. The conventional technique to monitor the acid concentration is time consuming and is typically conducted only a few times per day. This results in running higher acid concentrations than they would like to ensure that the process proceeds uninterrupted. Maintaining an excessively high acid concentration costs the refineries millions of dollars each year. Using SBIR funding, Process Instruments Inc. has developed an inline sensor for real time monitoring of acid concentrations in gasoline refinery alkylation units. Real time data was then collected over time from the instrument and its responses were matched up with the laboratory analysis. A model was then developed to correlate the laboratory acid values to the Raman signal that is transmitted back to the instrument from the process stream. The instrument was then used to demonstrate that it could create real-time predictions of the acid concentrations. The results from this test showed that the instrument could accurately predict the acid concentrations to within ~0.15% acid strength, and this level of prediction proved to be similar or better then the laboratory analysis. By utilizing a sensor for process monitoring the most economic acid concentrations can be maintained. A single smaller refinery (50,000 barrels/day) estimates that they should save over $120,000/year, with larger refineries saving considerably more.

Uibel, Rory, H.; Smith, Lee M.; Benner, Robert, E.

2006-04-19T23:59:59.000Z

169

Viscosity of aqueous and cyanate ester suspensions containing alumina nanoparticles  

SciTech Connect (OSTI)

The viscosities of both aqueous and cyanate ester monomer (BECy) based suspensions of alumina nanoparticle were studied. The applications for these suspensions are different: aqueous suspensions of alumina nanoparticles are used in the production of technical ceramics made by slip casting or tape casting, and the BECy based suspensions are being developed for use in an injection-type composite repair resin. In the case of aqueous suspensions, it is advantageous to achieve a high solids content with low viscosity in order to produce a high quality product. The addition of a dispersant is useful so that higher solids content suspensions can be used with lower viscosities. For BECy suspensions, the addition of nanoparticles to the BECy resin is expected to enhance the mechanical properties of the cured composite. The addition of saccharides to aqueous suspensions leads to viscosity reduction. Through DSC measurements it was found that the saccharide molecules formed a solution with water and this resulted in lowering the melting temperature of the free water according to classic freezing point depression. Saccharides also lowered the melting temperature of the bound water, but this followed a different rule. The shear thinning and melting behaviors of the suspensions were used to develop a model based on fractal-type agglomeration. It is believed that the structure of the particle flocs in these suspensions changes with the addition of saccharides which leads to the resultant viscosity decrease. The viscosity of the BECy suspensions increased with solids content, and the viscosity increase was greater than predicted by the classical Einstein equation for dilute suspensions. Instead, the Mooney equation fits the viscosity behavior well from 0-20 vol% solids. The viscosity reduction achieved at high particle loadings by the addition of benzoic acid was also investigated by NMR. It appears that the benzoic acid interacts with the surface of the alumina particle which may be the cause of the viscosity reduction. The flow behavior of alumina particles in water and BECy is markedly different. Aqueous alumina suspensions are shear thinning at all alumina loadings and capable of 50 vol% loading before losing fluidity whereas BECy/alumina suspensions show Newtonian behavior up to 5 vol%, and above 5 vol% show shear thinning at all shear rates. Highly loaded suspensions (i.e. 20vol% alumina) exhibit shear thinning at low and moderate shear rates and shear thickening at higher shear rates. The maximum particle loading for a fluid suspension, in this case, appears to be about 20 vol%. The difference in the viscosity of these suspensions must be related to the solvent-particle interactions for each system. The reason is not exactly known, but there are some notable differences between BECy and water. Water molecules are {approx}0.28 nm in length and highly hydrogen bonded with a low viscosity (1 mPa's) whereas in the cyanate ester (BECy) system, the solvent molecule is about 1.2 nm, in the largest dimension, with surfaces of varied charge distribution throughout the molecule. The viscosity of the monomer is also reasonably low for organic polymer precursor, about 7 mPa's. Nanoparticles in water tend to agglomerate and form flocs which are broken with the shear force applied during viscosity measurement. The particle-particle interaction is very important in this system. In BECy, the particles appear to be well dispersed and not as interactive. The solvent-particle interaction appears to be most important. It is not known exactly how the alumina particles interact with the monomer, but NMR suggests hydrogen bonding. These hydrogen bonds between the particle and monomer could very well affect the viscosity. A conclusion that can be reached in this work is that the presence of hydroxyl groups on the surface of the alumina particles is significant and seems to affect the interactions between other particles and the solvent. Thus, the hydrogen bonding between particles, particle/additive and/or particle/solvent dictates the behavior of nanos

Lawler, Katherine

2009-08-05T23:59:59.000Z

170

Optimization of extraction of high-ester pectin from passion fruit peel (Passiflora edulis flavicarpa) with citric acid by using  

E-Print Network [OSTI]

Optimization of extraction of high-ester pectin from passion fruit peel (Passiflora edulis for extraction of high-ester yellow passion fruit pectin. Ã? 2007 Elsevier Ltd. All rights reserved. Keywords: Pectin extraction; Passion fruit peel; Degree of esterification; Response surface methodology; Central

Ferreira, Márcia M. C.

171

Combustion, performance and emission analysis of diesel engine fuelled with methyl esters of Pongamia oil  

Science Journals Connector (OSTI)

The methyl esters of vegetable oils, known as biodiesel are increasingly becoming popular because of their low environmental impact and potential as a green alternative fuel for diesel engine, and that they would not require significant modification of existing engine hardware. Methyl ester of Pongamia oil (PME) is derived through transesterification process. Experimental investigations have been carried out to examine properties, performance and emissions of different blends (B00, B20, B40, B60, B80 and B100) of PME comparison to diesel. A computer assisted single cylinder constant speed water cooled four stroke direct diesel engine (5 HP), which is commonly used in the agricultural sector for driving the pumps and small electrical generators is selected for the experimental investigation. The performance, emissions and combustion characteristics are analysed. The combustion parameters considered for this analysis are cylinder pressure and rate of heat release. The brake thermal efficiency is slightly reduced and hydrocarbon, carbon monoxide and smoke emissions in the exhaust are reduced when fuelled with methyl esters compared to diesel. But the NOx emissions are high when fuelled with methyl esters compared to diesel. [Received: December 11, 2009; Accepted: March 21, 2010

T. Hari Prasad; K. Hema Chandra Reddy; M. Muralidhara Rao

2010-01-01T23:59:59.000Z

172

Modeling study of the lowtemperature oxidation of large methyl esters from C11 to C19  

E-Print Network [OSTI]

in biodiesel fuels has been investigated. Models have been developed for these species and then detailed; Biodiesel fuels; Modeling; Oxidation * Corresponding author: Olivier Herbinet Laboratory of Reaction the differences with the combustion of alkanes induced by the ester function. While biodiesel fuels deriving from

Boyer, Edmond

173

A density functional theory model of mechanically activated silyl ester hydrolysis  

SciTech Connect (OSTI)

To elucidate the mechanism of the mechanically activated dissociation of chemical bonds between carboxymethylated amylose (CMA) and silane functionalized silicon dioxide, we have investigated the dissociation kinetics of the bonds connecting CMA to silicon oxide surfaces with density functional calculations including the effects of force, solvent polarizability, and pH. We have determined the activation energies, the pre-exponential factors, and the reaction rate constants of candidate reactions. The weakest bond was found to be the silyl ester bond between the silicon and the alkoxy oxygen atom. Under acidic conditions, spontaneous proton addition occurs close to the silyl ester such that neutral reactions become insignificant. Upon proton addition at the most favored position, the activation energy for bond hydrolysis becomes 31 kJ?mol{sup ?1}, which agrees very well with experimental observation. Heterolytic bond scission in the protonated molecule has a much higher activation energy. The experimentally observed bi-exponential rupture kinetics can be explained by different side groups attached to the silicon atom of the silyl ester. The fact that different side groups lead to different dissociation kinetics provides an opportunity to deliberately modify and tune the kinetic parameters of mechanically activated bond dissociation of silyl esters.

Pill, Michael F.; Schmidt, Sebastian W. [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany) [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany); Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, 24098 Kiel (Germany); Center for Nanoscience (CeNS), Geschwister-Scholl-Platz 1, 80539 Munich (Germany); Beyer, Martin K. [Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, 24098 Kiel (Germany) [Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, 24098 Kiel (Germany); Institut für Ionenphysik und Angewandte Physik, Leopold-Franzens-Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck (Austria); Clausen-Schaumann, Hauke [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany) [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany); Center for Nanoscience (CeNS), Geschwister-Scholl-Platz 1, 80539 Munich (Germany); Kersch, Alfred, E-mail: akersch@hm.edu [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany)] [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany)

2014-01-28T23:59:59.000Z

174

E-Print Network 3.0 - acid ester derivatives Sample Search Results  

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

Sample search results for: acid ester derivatives Page: << < 1 2 3 4 5 > >> 1 Exam 2, Chemistry 212, Dr. Glaser, FS96 --1 --C h e m i s t r y 2 1 2 --F a l l S e m e s t e r 1 9 9...

175

13C NMR Investigation of the Chemical Structures of Coking and Non-Coking Coals in the Original and Reductively Alkylated Solid States  

Science Journals Connector (OSTI)

Chemical structures of four Turkish coals in their original and reductively alkylated forms were investigated in the solid state by13C NMR, using cross polarization and magic-angle spinning. Changes in13C NMR int...

Gaye Erbatur; Oktay Erbatur; Abdullah Coban; Mark F. Davis…

1984-01-01T23:59:59.000Z

176

Preparation and use of tetra-alkyl cobalt dicarbollide for extraction of cesium and strontium into hydrocarbon solvents  

DOE Patents [OSTI]

Preparation and use of tetra-C-alkyl cobalt dicarbollide for extraction of cesium and strontium into hydrocarbon solvents. Tetra-C-alkyl derivatives of cobalt dicarbollide, Co(C.sub.2 R.sub.2 B.sub.9 H.sub.9).sub.2.sup.- (CoB.sub.2 R.sub.4.sup.- ; R=CH.sub.3 and C.sub.6 H.sub.13) are demonstrated to be significant cesium and strontium extractants from acidic and alkaline solutions into non-toxic organic solvent systems. Extractions using mesitylene and diethylbenzene are compared to those with nitrobenzene as the organic phase. CoB.sub.2 -hexyl.sub.4.sup.- in diethylbenzene shows improved selectivity (10.sup.4) for Cs over Na in acidic solution. In dilute alkaline solution, CoB.sub.2 -hexyl.sub.4.sup.- extracts Cs less efficiently, but more effectively removes Sr from higher base concentrations. A general synthesis of tetra-C-alkyl cobalt dicarbollides is described.

Miller, Rebecca L. (Los Alamos, NM); Pinkerton, Anthony B. (Santa Fe, NM); Abney, Kent D. (Los Alamos, NM); Kinkead, Scott A. (Los Alamos, NM)

1997-01-01T23:59:59.000Z

177

Transition metal ion-assisted photochemical generation of alkyl halides and hydrocarbons from carboxylic acids  

SciTech Connect (OSTI)

Near-UV photolysis of aqueous solutions of propionic acid and aqueous Fe3+ in the absence of oxygen generates a mixture of hydrocarbons (ethane, ethylene and butane), carbon dioxide, and Fe2+. The reaction becomes mildly catalytic (about five turnovers) in the presence of oxygen which converts a portion of alkyl radicals to oxidizing intermediates that reoxidize Fe2+. The photochemistry in the presence of halide ions (X? = Cl?, Br?) generates ethyl halides via halogen atom abstraction from FeXn3?n by ethyl radicals. Near-quantitative yields of C2H5X are obtained at ?0.05 M X?. Competition experiments with Co(NH3)5Br2+ provided kinetic data for the reaction of ethyl radicals with FeCl2+ (k = (4.0 ± 0.5) × 106 M?1 s?1) and with FeBr2+ (k = (3.0 ± 0.5) × 107 M?1 s?1). Photochemical decarboxylation of propionic acid in the presence of Cu2+ generates ethylene and Cu+. Longer-chain acids also yield alpha olefins as exclusive products. These reactions become catalytic under constant purge with oxygen which plays a dual role. It reoxidizes Cu+ to Cu2+, and removes gaseous olefins to prevent accumulation of Cu+(olefin) complexes and depletion of Cu2+. The results underscore the profound effect that the choice of metal ions, the medium, and reaction conditions exert on the photochemistry of carboxylic acids.

Carraher, Jack; Pestovsky, Oleg; Bakac, Andreja

2012-03-14T23:59:59.000Z

178

Dual isotope notch observer for isotope identification, assay and imaging with mono-energetic gamma-ray sources  

DOE Patents [OSTI]

A dual isotope notch observer for isotope identification, assay and imaging with mono-energetic gamma-ray sources includes a detector arrangement consists of three detectors downstream from the object under observation. The latter detector, which operates as a beam monitor, is an integrating detector that monitors the total beam power arriving at its surface. The first detector and the middle detector each include an integrating detector surrounding a foil. The foils of these two detectors are made of the same atomic material, but each foil is a different isotope, e.g., the first foil may comprise U235 and second foil may comprise U238. The integrating detectors surrounding these pieces of foil measure the total power scattered from the foil and can be similar in composition to the final beam monitor. Non-resonant photons will, after calibration, scatter equally from both foils.

Barty, Christopher P.J.

2013-02-05T23:59:59.000Z

179

Self-cooling mono-container fuel cell generators and power plants using an array of such generators  

DOE Patents [OSTI]

A mono-container fuel cell generator (10) contains a layer of interior insulation (14), a layer of exterior insulation (16) and a single housing (20) between the insulation layers, where fuel cells, containing electrodes and electrolyte, are surrounded by the interior insulation (14) in the interior (12) of the generator, and the generator is capable of operating at temperatures over about 650.degree. C., where the combination of interior and exterior insulation layers have the ability to control the temperature in the housing (20) below the degradation temperature of the housing material. The housing can also contain integral cooling ducts, and a plurality of these generators can be positioned next to each other to provide a power block array with interior cooling.

Gillett, James E. (Greensburg, PA); Dederer, Jeffrey T. (Valencia, PA); Zafred, Paolo R. (Pittsburgh, PA)

1998-01-01T23:59:59.000Z

180

Self-cooling mono-container fuel cell generators and power plants using an array of such generators  

DOE Patents [OSTI]

A mono-container fuel cell generator contains a layer of interior insulation, a layer of exterior insulation and a single housing between the insulation layers, where fuel cells, containing electrodes and electrolyte, are surrounded by the interior insulation in the interior of the generator, and the generator is capable of operating at temperatures over about 650 C, where the combination of interior and exterior insulation layers have the ability to control the temperature in the housing below the degradation temperature of the housing material. The housing can also contain integral cooling ducts, and a plurality of these generators can be positioned next to each other to provide a power block array with interior cooling. 7 figs.

Gillett, J.E.; Dederer, J.T.; Zafred, P.R.

1998-05-12T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Effect of radical fluorination on mono- and bi-layer graphene in Ar/F{sub 2} plasma  

SciTech Connect (OSTI)

Fluorinated graphene has the possibility to achieve unique properties and functions in graphene. We propose a highly controlled fluorination method utilizing fluorine radicals in Ar/F{sub 2} plasma. To suppress ion bombardments and improve the reaction with fluorine radicals on graphene, the substrate was placed 'face down' in the plasma chamber. Although monolayer graphene was more reactive than bilayer, fluorination of bilayer reached the level of I{sub D}/I{sub G} {approx} 0.5 in Raman D peak intensity at 532 nm excitation. Annealing fluorinated samples proved reversibility of radical fluorination for both mono- and bi-layer graphenes. X-ray photoelectron spectroscopy showed the existence of carbon-fluorine bonding.

Tahara, K.; Iwasaki, T.; Hatano, M. [Department of Physical Electronics, Tokyo Institute of Technology, Tokyo 152-8552 (Japan); Matsutani, A. [Semiconductor and MEMS Processing Center, Technical Department, Tokyo Institute of Technology, Tokyo 226-8503 (Japan)

2012-10-15T23:59:59.000Z

182

Laboratory Directed Research and Development (LDRD) on Mono-uranium Nitride Fuel Development for SSTAR and Space Applications  

SciTech Connect (OSTI)

The US National Energy Policy of 2001 advocated the development of advanced fuel and fuel cycle technologies that are cleaner, more efficient, less waste-intensive, and more proliferation resistant. The need for advanced fuel development is emphasized in on-going DOE-supported programs, e.g., Global Nuclear Energy Initiative (GNEI), Advanced Fuel Cycle Initiative (AFCI), and GEN-IV Technology Development. The Directorates of Energy & Environment (E&E) and Chemistry & Material Sciences (C&MS) at Lawrence Livermore National Laboratory (LLNL) are interested in advanced fuel research and manufacturing using its multi-disciplinary capability and facilities to support a design concept of a small, secure, transportable, and autonomous reactor (SSTAR). The E&E and C&MS Directorates co-sponsored this Laboratory Directed Research & Development (LDRD) Project on Mono-Uranium Nitride Fuel Development for SSTAR and Space Applications. In fact, three out of the six GEN-IV reactor concepts consider using the nitride-based fuel, as shown in Table 1. SSTAR is a liquid-metal cooled, fast reactor. It uses nitride fuel in a sealed reactor vessel that could be shipped to the user and returned to the supplier having never been opened in its long operating lifetime. This sealed reactor concept envisions no fuel refueling nor on-site storage of spent fuel, and as a result, can greatly enhance proliferation resistance. However, the requirement for a sealed, long-life core imposes great challenges to research and development of the nitride fuel and its cladding. Cladding is an important interface between the fuel and coolant and a barrier to prevent fission gas release during normal and accidental conditions. In fabricating the nitride fuel rods and assemblies, the cladding material should be selected based on its the coolant-side corrosion properties, the chemical/physical interaction with the nitride fuel, as well as their thermal and neutronic properties. The US NASA space reactor, the SP-100 was designed to use mono-uranium nitride fuel. Although the SP-100 reactor was not commissioned, tens of thousand of nitride fuel pellets were manufactured and lots of them, cladded in Nb-1-Zr had been irradiated in fast test reactors (FFTF and EBR-II) with good irradiation results. The Russian Naval submarines also use nitride fuel with stainless steel cladding (HT-9) in Pb-Bi coolant. Although the operating experience of the Russian submarine is not readily available, such combination of fuel, cladding and coolant has been proposed for a commercial-size liquid-metal cooled fast reactor (BREST-300). Uranium mono-nitride fuel is studied in this LDRD Project due to its favorable properties such as its high actinide density and high thermal conductivity. The thermal conductivity of mono-nitride is 10 times higher than that of oxide (23 W/m-K for UN vs. 2.3 W/m-K for UO{sub 2} at 1000 K) and its melting temperature is much higher than that of metal fuel (2630 C for UN vs. 1132 C for U metal). It also has relatively high actinide density, (13.51 gU/cm{sup 3} in UN vs. 9.66 gU/cm{sup 3} in UO{sub 2}) which is essential for a compact reactor core design. The objective of this LDRD Project is to: (1) Establish a manufacturing capability for uranium-based ceramic nuclear fuel, (2) Develop a computational capability to analyze nuclear fuel performance, (3) Develop a modified UN-based fuel that can support a compact long-life reactor core, and (4) Collaborate with the Nuclear Engineering Department of UC Berkeley on nitride fuel reprocessing and disposal in a geologic repository.

Choi, J; Ebbinghaus, B; Meiers, T; Ahn, J

2006-02-09T23:59:59.000Z

183

Study of immobilized catalysts. XVI. Study of structural features and catalytic properties of immobilized mono-and binuclear cobalt complexes  

SciTech Connect (OSTI)

A series of polymeric carriers with chelate-forming groups of diacylamine and aminovinyl ketone types and also mono- and binuclear Co (II) complexes based on them were obtained by methods of polymer-analogous transformations, startting from polyethylene (PE)-grafted (rgr-) polyacetylonitrile (PE-gr-PAN), PE-gr-polyacrylamide (PE-gr-PAA), or PE-gr-poly(methyl vinyl ketone) CPE-grPMVK). From the data of spectral and magnetic studies, a conclusion was made on the chelate structure of the Co (II) complexes synthesized with a tetrahedral configuration of the coordination unit. It was found that the immobilized Co (II) chelates have a high and stable catalytic activity in the sterospecific 1,4-cispolymerization of butadiene. It was shown that an increase in the number of Co (II) ions in the complex molecule leads to a decrease in the specific activity of the catalytic systems based on them.

Pomogailo, A.D.; Golubeva, N.D.; Uflyand, I.E.

1986-06-01T23:59:59.000Z

184

Evaluation of iron- and manganese-based mono- and mixed-metallic oxygen carriers for chemical looping combustion  

Science Journals Connector (OSTI)

Abstract Chemical looping combustion (CLC) is an emerging technology for clean combustion of fossil fuels with inherent CO2 capture. In the present work, we investigate the use of iron and manganese based mixed oxides (MnxFe1?x–CeO2) supported on CeO2 as oxygen carriers in CLC. The low cost and low toxicity of iron and manganese make them interesting candidates for CLC, but both mono-metallic carriers suffer from issues of low reactivity, and manganese is additionally prone to form undesired spinel structures with typical oxide supports. Mono- and bimetallic oxygen carriers were synthesized across the entire spectrum of compositions from pure Mn to pure Fe (with x = 0, 0.1, 0.33, 0.5, 0.8, 0.9, 1), characterized, and tested in thermogravimetric and fixed-bed reactor studies using H2 and CH4 as fuels. We find that the use of ceria as support results in stable operation for all compositions of the metal phase, including pure Mn. Bimetallic carriers with high Fe content, which contain a FeMnO3 phase, exhibit an unusual, reversible de-alloying/re-alloying behavior during cyclic redox operation, which precludes any synergistic effects between the two metals and results in slowed reduction kinetics. However, Mn-rich carriers show a pronounced increase in carrier reactivity and selectivity for total oxidation of methane due to the addition of small amounts of Fe, indicating the promise of appropriately designed FeMn carriers as low-cost, environmentally benign oxygen carrier materials for chemical looping combustion.

Saurabh Bhavsar; Brian Tackett; Götz Veser

2014-01-01T23:59:59.000Z

185

CVD Growth of Mono-and Bi-Layer Graphene from Ethanol Xiao Chen, Pei Zhao, Bo Hou, Erik Einarsson, Shohei Chiashi and Shigeo Maruyama  

E-Print Network [OSTI]

CVD Growth of Mono- and Bi-Layer Graphene from Ethanol Xiao Chen, Pei Zhao, Bo Hou, Erik Einarsson precursors have been employed to synthesize graphene, such as methane [6], ethane [7] and ethanol [8]. Here we report a systematic study on CVD growth of graphene on Cu and Ni substrates from ethanol. Ethanol

Maruyama, Shigeo

186

OBSERVATIONS IN REACTIVITY BETWEEN BH CONTAINING COMPOUNDS AND ORGANOMETALLIC REAGENTS: SYNTHESIS OF BORONIC ACIDS, BORONIC ESTERS, AND MAGNESIUM HYDRIDES  

E-Print Network [OSTI]

Reaction of BH 3 :THF with magnesium hydride byproduct. A.It was also observed that magnesium hydride can partiallyACIDS, BORONIC ESTERS, AND MAGNESIUM HYDRIDES A dissertation

Clary, Jacob William

2012-01-01T23:59:59.000Z

187

Evaluation of bisphenol E cyanate ester for the resin-injection repair of advanced composites  

SciTech Connect (OSTI)

This thesis is a compilation of a general introduction and literature review that ties together the subsequent chapters which consist of two journal articles that have yet to be submitted for publication. The overall topic relates to the evaluation and application of a new class of cyanate ester resin with unique properties that lend it applicable to use as a resin for injection repair of high glass transition temperature polymer matrix composites. The first article (Chapter 2) details the evaluation and optimization of adhesive properties of this cyanate ester and alumina nanocomposites under different conditions. The second article (Chapter 3) describes the development and evaluation of an injection repair system for repairing delaminations in polymer matrix composites.

Wilber Yaote Lio

2009-12-19T23:59:59.000Z

188

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

189

Nonmonotonic Electric Conductivity by Alkyl-chain Variation of an Ionic Additive in Percolated Nonionic W/O-Microemulsions  

Science Journals Connector (OSTI)

Nonmonotonic Electric Conductivity by Alkyl-chain Variation of an Ionic Additive in Percolated Nonionic W/O-Microemulsions ... Accordingly, we equate the electrochemical potentials of the anion in both phases Equation 1 is explicitly written, that is where eo, are the elementary charge, , the standard potentials of the anion in the respective states, , the anion concentrations at the interface and in the oil phase, and ?intf, and ?oil the electrical potentials of the interface and oil phases. ... The bilayers, which are here considered have shorter chain length but are interdigitated (if two nano-droplets approach each other) with a consequently considerable resistance regarding diffusion. ...

Hans-Friedrich Eicke

2001-03-13T23:59:59.000Z

190

Surface deformation of Long Valley caldera and Mono Basin, California, investigated with the SBAS-InSAR approach  

Science Journals Connector (OSTI)

We investigate the surface deformation of the eastern California area that includes Long Valley caldera and Mono Basin. We apply the SAR Interferometry (InSAR) algorithm referred to as Small \\{BAseline\\} Subset (SBAS) approach that allows us to generate mean deformation velocity maps and displacement time series for the investigated area. The results presented in this work represent an advancement of previous InSAR studies of the area that are mostly focused on the deformation affecting the caldera. In particular, the proposed analysis is based on 21 SAR data acquired by the ERS-1/2 sensors during the 1992–2000 time interval, and demonstrates the capability of the SBAS procedure to identify and analyze displacement patterns at different spatial scales for the overall area spanning approximately 5000 km2. Two previously unreported localized deformation effects have been detected at Paoha Island, located within the Mono Lake, and in the McGee Creek area within the Sierra Nevada mountains, a zone to the south of the Long Valley caldera. In addition a spatially extended uplift effect, which strongly affects the caldera, has been identified and analyzed in detail. The InSAR results clearly show that the displacement phenomena affecting the Long Valley caldera have a maximum in correspondence of the resurgent dome and are characterized by the sequence of three different effects: a 1992–1997 uplift background, a 1997–1998 unrest phenomenon and a 1998–2000 subsidence phase. Moreover, the analysis of the retrieved displacement time series allows us to map the extent of the zone with a temporal deformation behavior highly correlated with the detected three-phases deformation pattern: background uplift-unrest-subsidence. We show that the mapped area clearly extends outside the northern part of the caldera slopes; accordingly, we suggest that future inversion models take this new evidence into account. The final discussion is dedicated to a comparison between the retrieved InSAR measurements and a set of GPS and leveling data, confirming the validity of the results achieved through the SBAS-InSAR analysis.

P. Tizzani; P. Berardino; F. Casu; P. Euillades; M. Manzo; G.P. Ricciardi; G. Zeni; R. Lanari

2007-01-01T23:59:59.000Z

191

A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester composites.  

E-Print Network [OSTI]

?? Enhancement of mechanical, thermal and hygrothermal properties of carbon fiber/vinyl ester (CFVE) composites through nanoparticle reinforcement has been investigated. CFVE composites are becoming more… (more)

Powell, Felicia M.

2012-01-01T23:59:59.000Z

192

A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester compounds.  

E-Print Network [OSTI]

??Enhancement of mechanical, thermal and hygrothermal properties of carbon fiber/vinyl ester (CFVE) composites through nanoparticle reinforcement has been investigated. CFVE composites are becoming more and… (more)

Powell, Felicia M.

2012-01-01T23:59:59.000Z

193

Synthesis and chemistry of cationic d{sup 0} metal alkyl complexes. Progress report, July 1988--May 1991  

SciTech Connect (OSTI)

The objective of this project is to develop new types of electrophilic metal alkyl complexes for catalytic C-H activation and olefin polymerization chemistry, and associated fundamental mechanistic studies. We have focused our efforts on four classes of early metal alkyl complexes: (1) cationic group 4 Cp{sub 2}M(R){sup +} complexes (1) which are active species in Cp{sub 2}MX{sub 2}-based Ziegler-Natta olefin polymerization catalyst systems and which catalyze productive C-H activation reactions of heterocycles, (2) neutral (dicarbollide)(Cp*)M(R) complexes (2) which are structurally are electronically very similar to 1, (3) half-sandwich complexes CpM(R){sub 2}(L){sub n}{sup +} which are highly coordinatively and electronically unsaturated, and (4) new group 5 (dicarbollide)(Cp)MR{sub 2} and (dicarbollide){sub 2} MR complexes which are more unsaturated than group 5 Cp{sub 2}M systems due to incorporation of the dicarbollide ligand.

Jordan, R.F.

1991-12-31T23:59:59.000Z

194

Application of guided flexural waves in immersed plates to aquatic propulsion of mono?hull marine vessels  

Science Journals Connector (OSTI)

The present paper describes the results of the experimental investigation of a small?scale mono?hull model boat propelled by a localised flexural wave propagating along the plate of finite width forming the boat's keel. Forward propulsion of the boat was achieved through flexural wave propagation in the opposite direction which is similar to the aquatic propulsion used in nature by stingrays. The model boat under consideration underwent a series of tests both in a Perspex water tank and in the experimental pool. In particular the forward velocity of the boat has been measured for different frequencies and amplitudes of the flexural wave. The highest velocity achieved was 32 cm/s. The thrust and propulsive efficiency have been measured as well. The obtained value of the propulsive efficiency in the optimum regime was 51%. This indicates that efficiency of this type of aquatic propulsion is comparable to that of dolphins and sharks (around 75%) and to that of a traditional propeller (around 70%). In contrast to a propeller though the wavelike aquatic propulsion has the following advantages: it does not generate underwater noise and it is safe for people and marine animals.

Victor V. Krylov; Ewan Porteous

2008-01-01T23:59:59.000Z

195

Lower hybrid instability driven by mono-energy {alpha}-particles with finite pitch angle spread in a plasma  

SciTech Connect (OSTI)

A kinetic formalism of lower hybrid wave instability, driven by mono-energy {alpha}-particles with finite pitch angle spread, is developed. The instability arises through cyclotron resonance interaction with high cyclotron harmonics of {alpha}-particles. The {alpha}-particles produced in D-T fusion reactions have huge Larmor radii ({approx}10 cm) as compared to the wavelength of the lower hybrid wave, whereas their speed is an order of magnitude smaller than the speed of light in vacuum. As a result, large parallel phase velocity lower hybrid waves, suitable for current drive in tokamak, are driven unstable via coupling to high cyclotron harmonics. The growth rate decreases with increase in pitch angle spread of the beam. At typical electron density of {approx}10{sup 19} m{sup -3}, magnetic field {approx}4 Tesla and {alpha}-particle concentration {approx}0.1%, the large parallel phase velocity lower hybrid wave grows on the time scale of 20 ion cyclotron periods. The growth rate decreases with plasma density.

Kumar, Pawan; Singh, Vishwesh; Tripathi, V. K. [Department of Physics, IIT Delhi, New Delhi-110016 (India)

2013-02-15T23:59:59.000Z

196

Chapter 22 - Whole Algal Biomass In situ Transesterification to Fatty Acid Methyl Esters as Biofuel Feedstocks  

Science Journals Connector (OSTI)

Abstract This chapter addresses the yield of lipids quantified as fatty acid methyl esters (FAME) by using different catalysts and catalyst combinations, and the acid catalyst hydrochloric acid providing a consistently high level of conversion to FAME. The discussion is accompanied by a link to the large-scale application of this process as a whole biomass conversion pathway. Microalgae-focused lipid technologies for biofuel applications, renewable and biodiesel fuel properties are described along with in situ transesterification of oleaginous algal biomass, choice of catalyst for in situ whole biomass transesterification, and the analytical characterization of lipid content in algal biomass using in situ transesterification.

Lieve M.L. Laurens

2015-01-01T23:59:59.000Z

197

Performance and emission characteristics of a diesel engine using esters of palm olein/soybean oil blends  

Science Journals Connector (OSTI)

In this experimental study, the engine performance and exhaust emissions of a diesel direct injection engine using mixed palm oleinâ??soybean vegetable oil ethyl ester (POSEE) and methyl ester (POSME) have been examined. The results of experimental studies have shown that the torque and brake power output of an engine, which uses biodiesels, is slightly lower and specific fuel consumption is higher than in an engine using conventional diesel fuel. It has also been observed that there is a decrease in both carbon monoxide and hydrocarbon (HC) emissions, which indicates an advantage of exhaust emissions. Although methyl ester's CO2 emissions decreased compared with those of diesel fuel, NO and NOX emissions were higher with the biodiesels.

Imdat Taymaz; Mucahit Sengil

2010-01-01T23:59:59.000Z

198

Wet Chemical Functionalization of III–V Semiconductor Surfaces: Alkylation of Gallium Arsenide and Gallium Nitride by a Grignard Reaction Sequence  

Science Journals Connector (OSTI)

Wet Chemical Functionalization of III–V Semiconductor Surfaces: Alkylation of Gallium Arsenide and Gallium Nitride by a Grignard Reaction Sequence ... These observations are consistent with the known solubility of oxidized As species in water. ... Remote H plasma exposure was effective for removing halogens and hydrocarbons from the surfaces of both nitrides at 450 °C, but was not efficient for oxide removal. ...

Sabrina L. Peczonczyk; Jhindan Mukherjee; Azhar I. Carim; Stephen Maldonado

2012-02-28T23:59:59.000Z

199

Luminescence of argon in a spatially stabilized mono-filamentary dielectric barrier micro-discharge: spectroscopic and kinetic analysis  

Science Journals Connector (OSTI)

The experimental work reported here is devoted to the temporal behaviour of a mono-filamentary dielectric barrier discharge in pure argon, from 100 to 700?Torr. A sinusoidal voltage supply is used, its frequency ranging from 10 to 90?kHz. An anode avalanche followed by a cathode streamer as well as the spatial stability of the micro-discharge is clearly seen in successive 3-ns snapshots in the visible range. Near the cathode, its diameter is about 0.2?mm, at 400?Torr. The electrical characteristics of the discharge are also evaluated, in particular the breakdown voltage and the energy deposited in the micro-discharge. The light output in the vacuum ultraviolet range is essentially due to the second continuum of argon, centred at 130?nm. The kinetic study of this continuum shows that primary excitation of the lowest argon atomic 4s and 4s' states is practically achieved after 120?ns since beyond that time the luminescence decay of the second continuum is fairly described by only two exponential terms. So collisions between excited states, electronic collisions, and recombination of ionic species do not contribute significantly to this luminescence, after 120?ns. Surprisingly, we do not observe the contribution of the Ar(3P1) resonant state in the production of the argon excimers. The radiative lifetime of the Ar2[1u(3P2)]low v excimer ((3.18 ± 0.03)?µs) and the three-body rate constant relative to the decay of the Ar(3P2) metastable state ((13.2 ± 0.9)?Torr?2?s?1) leading to the formation of Ar2[1u(3P2)], are estimated. These results are consistent with those found from the literature. A simple kinetic scheme is proposed for times later than 120?ns.

N Merbahi; N Sewraj; F Marchal; Y Salamero; P Millet

2004-01-01T23:59:59.000Z

200

Determination of Total Biodiesel Fatty Acid Methyl, Ethyl Esters, and Hydrocarbon Types in Diesel Fuels by Supercritical Fluid Chromatography-Flame Ionization Detection  

Science Journals Connector (OSTI)

......Determination of Total Biodiesel Fatty Acid Methyl...vortex mixer. This process produced solutions ranging...D5186 indicated that the biodiesel esters were not eluted...0%. For further evaluation, the quantitative analysis...determination of the biodiesel ester components by......

John W. Diehl; Frank P. DiSanzo

Note: This page contains sample records for the topic "mono alkyl ester" 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

Modelling Study of the Low-Temperature Oxidation of Large Methyl Esters J. Biet, V. Warth, O. Herbinet*  

E-Print Network [OSTI]

-decane / methyl palmitate mixture in a jet-stirred reactor. This paper also presents the construction and a comparison of models for methyl esters from C7 up to C17 in terms of conversion in a jet-stirred reactor, the development of renewable energy is more vital than ever [1,2]. The production of biofuels such as methyl

Paris-Sud XI, Université de

202

1,4-Addition of Lithium Diisopropylamide to Unsaturated Esters: Role of Rate-Limiting Deaggregation, Autocatalysis,  

E-Print Network [OSTI]

1,4-Addition of Lithium Diisopropylamide to Unsaturated Esters: Role of Rate-Limiting Deaggregation, Autocatalysis, Lithium Chloride Catalysis, and Other Mixed Aggregation Effects Yun Ma, Alexander C. Hoepker.edu Abstract: Lithium diisopropylamide (LDA) in tetrahydrofuran at -78 °C undergoes 1,4-addition

Collum, David B.

203

Algorithms and Applications for Spatial Data Mining Martin Ester, Hans-Peter Kriegel, Jrg Sander (University of Munich)  

E-Print Network [OSTI]

- 1 - Algorithms and Applications for Spatial Data Mining Martin Ester, Hans-Peter Kriegel, Jörg) for an overview of spatial data mining). Finding implicit reg- ularities, rules or patterns hidden in spatial for spatial data is more complex than for relational data. This applies to both the efficiency of algorithms

Kriegel, Hans-Peter

204

Performance analysis and exhaust emissions of neem methyl ester operated compression ignition engine  

Science Journals Connector (OSTI)

Neem oil methyl ester (NOME) was prepared from neem oil using alkaline catalyzed transesterification. The important fuel properties of NOME 20% blend of NOME with diesel were compared with those of diesel. Optimum injection pressures were determined for neat diesel and NOME-20 blend. Comparison of brake specific fuel consumption (BSFC) brake thermal efficiency (BTE) exhaust gas temperature (EGT) and smoke density was done for diesel and NOME-20 blend at their respective optimum injection pressure. Higher BSFC a slight decrease in BTE and a sharp decrease in EGT and smoke density were recorded with NOME-20 blend. Emissions with NOME-20 blend were also compared with diesel emissions at their respective optimum injection pressures. Significant reductions in carbon monoxide hydrocarbon and oxides of nitrogen and increase in carbon-di-oxide were observed with NOME-20 blend. Hence neem biodiesel has an environmental importance over diesel and shows a promising future.

Vinod Singh Yadav; Kamal Kishore Khatri; Deepak Tanwar; Ajayta; Dilip Sharma; S. L. Soni

2013-01-01T23:59:59.000Z

205

Testing Waste Olive Oil Methyl Ester as a Fuel in a Diesel Engine  

Science Journals Connector (OSTI)

In this sense, to gain knowledge about the implications of its use, waste olive oil methyl ester was evaluated as a fuel for diesel engines during a 50-h short-term performance test in a diesel direct-injection Perkins engine. ... At the beginning of the last century, Rudolph Diesel fueled a diesel engine with the oil of an African groundnut (peanut), thus demonstrating the idea of using vegetable oil as a substitute for No. 2 diesel fuel. ... In this way, we obtained a volume value for each trio of working values, making a brake-specific fuel consumption comparison between different tests or fuels possible, as shown in Table 2, where Vi is the volume value for each test and V50 corresponds to that of No. 2 diesel fuel after 50 h (the test that showed the minimum value). ...

M. P. Dorado; E. Ballesteros; J. M. Arnal; J. Gómez; F. J. López Giménez

2003-10-02T23:59:59.000Z

206

Performance and emissions of a diesel tractor engine fueled with marine diesel and soybean methyl ester  

Science Journals Connector (OSTI)

Biodiesel is an alternative fuel that is cleaner than petrodiesel. Biodiesel can be used directly as fuel for a diesel engine without having to modify the engine system. It has the major advantages of having high biodegradability, excellent lubricity and no sulfur content. This paper presents the results of investigations carried out in studying the fuel properties of soybean methyl ester (SME) and its blend with marine diesel fuel from 5%, 20% and 50% blends by volume and in running a diesel engine with these fuels. The results indicate that the use of biodiesel produces lower smoke opacity (up to 74%), but higher brake specific fuel consumption (BSFC) (up to 12%) compared to marine fuel (MF). The measured carbon monoxide (CO) emissions of B5 and B100 fuels were found to be 3% and 52% lower than that of the MF, respectively.

B. Gokalp; E. Buyukkaya; H.S. Soyhan

2011-01-01T23:59:59.000Z

207

The influence of molecular structure of fatty acid monoalkyl esters on diesel combustion  

SciTech Connect (OSTI)

The subject of this paper is a series of experiments conducted on a single-cylinder research engine investigating the influence of molecular structure on the combustion behaviour of fatty acid alcohol ester (biodiesel) molecules under diesel engine conditions. The fuels employed in these experiments comprised various samples of pure individual fatty acid alcohol ester molecules of different structure, as well as several mixtures of such molecules. The latter consisted in biodiesel fuels produced by the transesterification of naturally occurring plant oils or animal fat with a monohydric alcohol. It was observed that the molecular structure of the fuel significantly influenced the formation of NO{sub x} and particulate matter and their respective concentration in the exhaust gas. The influence on the formation of NO{sub x} in particular, appeared to be exerted first through the effect which the molecular structure had on the auto-ignition delay occurring after the fuel was injected into the combustion chamber, and second through the flame temperature at which the various molecules burned. The emission of particulates on the other hand showed correlation with the number of double bonds in the fuel molecules for the case of larger accumulation mode particles, and with the boiling point of the fuel samples for the case of the smaller, nucleation mode particles. The effect of ignition delay on the exhaust emissions of these pollutants was isolated by adding the ignition promoting molecule 2-ethylhexyl nitrate to some of the fuel samples in closely specified concentrations, so as to equalise the ignition delay for the relevant fuel samples. The removal of the ignition delay as a main influence on the combustion process enabled the observation of the lesser effects of adiabatic flame temperature. (author)

Schoenborn, Alessandro; Ladommatos, Nicos [Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE (United Kingdom); Williams, John; Allan, Robert; Rogerson, John [BP Oil UK Limited, Technology Centre, Whitchurch Hill, Pangbourne, Reading, RG8 7QR (United Kingdom)

2009-07-15T23:59:59.000Z

208

The Sensitivity of MCF10A Breast Epithelial Cells to Alkylating Drugs is Enhanced by the Inhibition of O6-Methylguanine-DNA Methyltransferase Transcription with a Synthetic Double Strand DNA Oligonucleotide  

Science Journals Connector (OSTI)

Cytoxicity of alkylating chemotherapeutic drugs is affected by the cellular content of the enzyme O6-methylguanine-DNA methyl transferase (MGMT). Since high levels ... of the enzyme confer the efficient repair of...

Laura Mariani; Antonella Piccirilli; Lorenzo Citti…

2002-06-01T23:59:59.000Z

209

Plug repairs of marine glass fiber / vinyl ester laminates subjected to in-plane shear stress or in-plane bending moment  

E-Print Network [OSTI]

Glass fiber / vinyl ester composite laminates represent an important class of modem fiber composites being proposed or used in state-of-the-art shipbuilding. This thesis examined the effectiveness of chopped strand mat ...

Urrutia Valenzuela, Roberto

2010-01-01T23:59:59.000Z

210

Asymmetric synthesis of both enantiomers of esters and ?-lactones from optically active 1-chlorovinyl p-tolyl sulfoxides and lithium ester enolates with the formation of a tertiary or a quaternary carbon stereogenic center at the ?-position  

Science Journals Connector (OSTI)

Treatment of optically active 1-chlorovinyl p-tolyl sulfoxides having two different substituents at the 2-position, which were synthesized from aldehydes or unsymmetrical ketones and (R)-(?)-chloromethyl p-tolyl sulfoxide in two or three steps, with the lithium enolate of tert-butyl acetate gave optically active adducts in 99% chiral induction from the sulfur stereogenic center. The adducts were converted to optically active esters, carboxylic acids, and ?-lactones, which have a tertiary or a quaternary carbon stereogenic center at the ?-position. A synthesis of optically active spiro-lactones was realized starting from 2-cyclohexenone by this method.

Shimpei Sugiyama; Tsuyoshi Satoh

2005-01-01T23:59:59.000Z

211

Interaction and dynamics of (alkylamide + electrolyte) deep eutectics: Dependence on alkyl chain-length, temperature, and anion identity  

SciTech Connect (OSTI)

Here we investigate the solute-medium interaction and solute-centered dynamics in (RCONH{sub 2} + LiX) deep eutectics (DEs) via carrying out time-resolved fluorescence measurements and all-atom molecular dynamics simulations at various temperatures. Alkylamides (RCONH{sub 2}) considered are acetamide (CH{sub 3}CONH{sub 2}), propionamide (CH{sub 3}CH{sub 2}CONH{sub 2}), and butyramide (CH{sub 3}CH{sub 2}CH{sub 2}CONH{sub 2}); the electrolytes (LiX) are lithium perchlorate (LiClO{sub 4}), lithium bromide (LiBr), and lithium nitrate (LiNO{sub 3}). Differential scanning calorimetric measurements reveal glass transition temperatures (T{sub g}) of these DEs are ?195 K and show a very weak dependence on alkyl chain-length and electrolyte identity. Time-resolved and steady state fluorescence measurements with these DEs have been carried out at six-to-nine different temperatures that are ?100–150 K above their individual T{sub g}s. Four different solute probes providing a good spread of fluorescence lifetimes have been employed in steady state measurements, revealing strong excitation wavelength dependence of probe fluorescence emission peak frequencies. Extent of this dependence, which shows sensitivity to anion identity, has been found to increase with increase of amide chain-length and decrease of probe lifetime. Time-resolved measurements reveal strong fractional power dependence of average rates for solute solvation and rotation with fraction power being relatively smaller (stronger viscosity decoupling) for DEs containing longer amide and larger (weaker decoupling) for DEs containing perchlorate anion. Representative all-atom molecular dynamics simulations of (CH{sub 3}CONH{sub 2} + LiX) DEs at different temperatures reveal strongly stretched exponential relaxation of wavevector dependent acetamide self dynamic structure factor with time constants dependent both on ion identity and temperature, providing justification for explaining the fluorescence results in terms of temporal heterogeneity and amide clustering in these multi-component melts.

Guchhait, Biswajit; Das, Suman; Daschakraborty, Snehasis; Biswas, Ranjit, E-mail: ranjit@bose.res.in [Department of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700098 (India)] [Department of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700098 (India)

2014-03-14T23:59:59.000Z

212

Emissions and engine performance from blends of soya and canola methyl esters with ARB {number_sign}2 diesel in a DCC 6V92TA MUI engine  

SciTech Connect (OSTI)

A Detroit Diesel 6V92TA MUI engine was operated on several blends of EPA No. 2 diesel, California ARB No. 2 diesel, soya methyl ester (SME) and canola methyl ester (CME). Various fuels and fuel blend characteristics were determined and engine emissions from these fuels and blends were compared. Increasing percentages of SME and CME blended with either ARB or EPA diesels led to increased emissions of NO{sub x}, CO{sub 2} and soluble particulate matter. Also noted were reductions in total hydrocarbons, CO and insoluble particulate matter. Chassis dynamometer tests conducted on a 20/80 SME/ARB blend showed similar emissions trends. The data suggest that certain methyl ester/No. 2 diesel blends in conjunction with delays in engine timing and technologies that reduce the soluble fraction of particulate emissions merit further exploration as emissions reducing fuel options for North American mass transits (except in California, which mandates ARB diesel).

Spataru, A.; Romig, C.

1995-12-31T23:59:59.000Z

213

Emissions and engine performance from blends of soya and canola methyl esters with ARB No. 2 diesel in a DDC 6V92TA MUI engine  

SciTech Connect (OSTI)

A Detroit Diesel 6V92TA MUI engine was operated on several blends of EPA No. 2 diesel, soya methyl ester (SME) and canola methyl ester (CME). Various fuels and fuel blend characteristics were determined and engine emissions from these fuels and blends were compared. Increasing percentages of SME and CME blended with either ARB or EPA diesels led to increased emissions of NO{sub x}, CO{sub 2} and soluble particulate matter. Also noted were reductions in total hydrocarbons, CO and insoluble particulate matter. Chassis dynamometer tests conducted on a 20/80 SME/ARB blend showed similar emission trends. The data suggest that certain methyl ester/No. 2 diesel blends in conjunction with technologies that reduce the soluble fraction of particulate emissions merit further exploration as emissions reducing fuel options for North American mass transit sectors (except California, which mandates ARB diesel).

Spataru, A.; Romig, C. [ADEPT Group, Inc., Los Angeles, CA (United States)

1995-11-01T23:59:59.000Z

214

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

215

Experimental Autoignition of C4-C6 Saturated and Unsaturated Methyl and Ethyl Esters H. Bennadji*, J. Biet, L. Coniglio-Jaubert, F. Billaud, P.A. Glaude, F. Battin-Leclerc  

E-Print Network [OSTI]

. Keywords: Biodiesel, Methyl esters, Ethyl esters, Shock tube, Reaction mechanism. 1. Introduction Biodiesel is an alternative fuel which can be used directly to a diesel engine without modifying the engine system. Basically separate infrastructure. The use of biodiesel in conventional diesel engines results in substantial

Boyer, Edmond

216

Simultaneous determination of nine trace mono- and di-chlorophenols in water by ion chromatography atmospheric pressure chemical ionization mass spectrometry  

Science Journals Connector (OSTI)

A novel analytical method was proposed for the rapidly simultaneous determination of nine mono-chlorophenols (MCPs) and di-chlorophenols (DCPs) in water samples using eluent generator ion chromatography (IC) coupled with an atmospheric pressure chemical ionization mass spectrometry (APCI-MS) in the negative mode. The IC separation was carried out on an IonPac® AS11 analytical column (250 mm × 4.0 mm) using gradient KOH containing 15% acetonitrile as organic modifier at a constant flow rate of 1.0 mL/min. The molecular ions m/z [M ? H]? 127 and 161 were selected for the quantification in selected ion monitoring (SIM) mode for \\{MCPs\\} and DCPs, respectively. The average recoveries were between 80.6% and 92.6%. Within-day and day-to-day relative standard deviations were less than 12.1% and 13.3%, respectively. The method allowed the nine objective compounds in water samples to be determined at ?g/L levels. It was confirmed that this method could be used in routine analysis.

Micong Jin; Yiwen Yang

2006-01-01T23:59:59.000Z

217

Light-ion production in the interaction of 175 MeV quasi-mono-energetic neutrons with iron and with bismuth  

E-Print Network [OSTI]

Nuclear data for neutron-induced reactions in the intermediate energy range of 20 to 200 MeV are of great importance for the development of nuclear reaction codes since little data exist in that range. Also several different applications benefit from such data, notably accelerator-driven incineration of nuclear waste. The Medley setup was used for a series of measurements of p, d, t, $^3$He and $\\alpha$-particle production by 175 MeV quasi-mono-energetic neutrons on various target nuclei. The measurements were performed at the The Svedberg Laboratory in Uppsala, Sweden. Eight detector telescopes placed at angles between 20$^\\circ$ and 160$^\\circ$ were used. Medley uses the $\\Delta E$-$\\Delta E$-$E$ technique to discriminate among the particle types and is able to measure double-differential cross sections over a wide range of particle energies. This paper briefly describes the experimental setup, summarizes the data analysis and reports on recent changes in the previously reported preliminary data set on bism...

Bevilacqua, R; Pomp, S; Andersson, P; Blomgren, J; Gustavsson, C; Hjalmarsson, A; Simutkin, V D; Österlund, M; Koning, A J; Prokofiev, A V; Hayashi, M; Hirayama, S; Naitou, Y; Watanabe, Y; Tippawan, U; Mashnik, S G; Kerby, L M; Lecolley, F -R; Marie, N; David, J -C; Leray, S

2014-01-01T23:59:59.000Z

218

Light-ion production in the interaction of 175 MeV quasi-mono-energetic neutrons with iron and with bismuth  

E-Print Network [OSTI]

Nuclear data for neutron-induced reactions in the intermediate energy range of 20 to 200 MeV are of great importance for the development of nuclear reaction codes since little data exist in that range. Also several different applications benefit from such data, notably accelerator-driven incineration of nuclear waste. The Medley setup was used for a series of measurements of p, d, t, $^3$He and $\\alpha$-particle production by 175 MeV quasi-mono-energetic neutrons on various target nuclei. The measurements were performed at the The Svedberg Laboratory in Uppsala, Sweden. Eight detector telescopes placed at angles between 20$^\\circ$ and 160$^\\circ$ were used. Medley uses the $\\Delta E$-$\\Delta E$-$E$ technique to discriminate among the particle types and is able to measure double-differential cross sections over a wide range of particle energies. This paper briefly describes the experimental setup, summarizes the data analysis and reports on recent changes in the previously reported preliminary data set on bismuth. Experimental data are compared with INCL4.5-Abla07, MCNP6 using CEM03.03, TALYS and PHITS model calculations as well as with nuclear data evaluations. The models agree fairly well overall but in some cases systematic differences are found.

R. Bevilacqua; K. Jansson; S. Pomp; P. Andersson; J. Blomgren; C. Gustavsson; A. Hjalmarsson; V. D. Simutkin; M. Österlund; A. J. Koning; A. V. Prokofiev; M. Hayashi; S. Hirayama; Y. Naitou; Y. Watanabe; U. Tippawan; S. G. Mashnik; L. M. Kerby; F. -R. Lecolley; N. Marie; J. -C. David; S. Leray

2014-11-12T23:59:59.000Z

219

Membrane Stresses Induced by Overproduction of Free Fatty Acids...  

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

coli. Abstract: Microbially produced fatty acids are potential precursors to high energy density biofuels, including alkanes and alkyl ethyl esters by either catalytic...

220

Determination of Six Phthalic Acid Esters in Orange Juice Packaged by PVC Bottle Using SPE and HPLC-UV: Application to the Migration Study  

Science Journals Connector (OSTI)

......Y. Kang, W. Den, H. Bai, and F. Ko. Direct quantitative analysis of phthalate esters as micro-contaminants in cleanroom air and wafer surfaces by auto-thermal desorption-gas chromatography-mass spectrometry. J. Chromatogr. A 1070: 137145......

Zhiyong Guo; Danyi Wei; Meili Wang; Sui Wang

2010-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Abstract 2013: Modulation of cellular uptake and increased therapeutic efficacy of the azacytidine-elaidic acid ester CP-4200 in vitro and in vivo  

Science Journals Connector (OSTI)

...azacytidine-elaidic acid ester CP-4200 in vitro and in vivo Bodo Brueckner 1 Maria Rius 1 Maria Rivera Markelova 2 Iduna Fichtner 3 Petter-Arnt...might have important therapeutic implications. Reference: Brueckner, B., et al. (2010). Mol. Cancer Ther. 9: 1256-1264...

Bodo Brueckner; Maria Rius; Maria Rivera Markelova; Iduna Fichtner; Petter-Arnt Hals; Marit Liland Sandvold; Frank Lyko

2011-07-12T23:59:59.000Z

222

Determination of Total Biodiesel Fatty Acid Methyl, Ethyl Esters, and Hydrocarbon Types in Diesel Fuels by Supercritical Fluid Chromatography-Flame Ionization Detection  

Science Journals Connector (OSTI)

......Research and Engineering, Paulsboro...determining total biodiesel methyl and...in diesel fuels by supercritical...mixture. Introduction The proposed use of biodiesel esters derived...as diesel fuel blending...of Total Biodiesel Fatty Acid...in Diesel Fuels by Supercritical...Research and Engineering, Paulsboro......

John W. Diehl; Frank P. DiSanzo

223

Poly(?-amino ester) Nanoparticle Delivery of TP53 Has Activity against Small Cell Lung Cancer In Vitro and In Vivo  

Science Journals Connector (OSTI)

...Therapeutics Poly(beta-amino ester) Nanoparticle Delivery of TP53 Has Activity against...TP53 delivery in vitro and in vivo. Nanoparticle delivery of TP53 resulted in expression...chain (S), or an end group (E). Nanoparticle preparation For each transfection...

Chandrashekhar D. Kamat; Ron B. Shmueli; Nick Connis; Charles M. Rudin; Jordan J. Green; Christine L. Hann

2013-04-01T23:59:59.000Z

224

Conversion of the Common Food Constituent 5-Hydroxymethylfurfural into a Mutagenic and Carcinogenic Sulfuric Acid Ester in the Mouse in Vivo  

Science Journals Connector (OSTI)

Conversion of the Common Food Constituent 5-Hydroxymethylfurfural into a Mutagenic and Carcinogenic Sulfuric Acid Ester in the Mouse in Vivo ... 5-Hydroxymethylfurfural (HMF), formed by acid-catalyzed dehydration and in the Maillard reaction from reducing sugars, is found at high levels in numerous foods. ... Hydroxymethylfurfural, A Versatile Platform Chemical Made from Renewable Resources ...

Bernhard H. Monien; Heinz Frank; Albrecht Seidel; Hansruedi Glatt

2009-04-22T23:59:59.000Z

225

Combustion analysis of a direct injection diesel engine when fuelled with sunflower methyl ester and its diesel blends  

Science Journals Connector (OSTI)

Uncertainty in the availability of petroleum-based fuels in the near future and stringent pollution norms have triggered a search for renewable and clean-burning fuels. The use of vegetable oil as an alternative fuel has for long been in the pipeline, but its direct use has been limited because of its higher viscosity. In this work, sunflower oil was taken as feedstock and the feasibility of sunflower oil methyl ester (SFME) as an alternative fuel for diesel engines was investigated. Tests were conducted in a 4.4 kW, single cylinder, naturally aspirated direct injection diesel engine. It was observed that the premixed combustion phase of SFME and its blends were less intense compared with diesel oil. In addition, it was observed that SFME and its blends had slightly lower thermal efficiency and lower tailpipe emissions than diesel oil.

G. Lakshmi Narayana Rao; S. Saravanan; P. Selva Ilavarasi; G. Devasagayam

2009-01-01T23:59:59.000Z

226

The comparative analysis of diesel engine combustion and emission parameters fuelled with palm oil methyl esters and its diesel blends  

Science Journals Connector (OSTI)

In this work, the combustion and emission characteristics of a direct injection compression ignition engine fuelled with diesel-Palm Oil Methyl Ester (POME) blends are investigated. This study shows that the ignition delay decreases with increase in the POME addition. The maximum rate of pressure rise and maximum rate of heat release decreases with increase in POME addition at all loads. As the percentage of POME in the blend increases, the crank angle at which the maximum rate of heat release takes place advances. The brake thermal efficiency decreases with increase in POME addition. The unburned hydrocarbon, carbon monoxide and soot intensity decreases, while nitrogen oxides (NOx) increase with increase in POME addition. [Received: April 4, 2008; Accepted: November 24, 2008

G. Lakshmi Narayana Rao; S. Saravanan; P. Selva Ilavarasi

2009-01-01T23:59:59.000Z

227

A Method to Increase Current Density in a Mono Element Internal Tin Processed Superconductor Utilizing Zr Oxide to Refine Grain Size  

SciTech Connect (OSTI)

The effect of Oxygen on (Nb1Zr)3Sn multifilament conductors manufactured by the Mono Element Internal Tin (MEIT) process was explored to improve the current density by refining the grain size. This followed work first done by General Electric on the Nb3Sn tape process. Techniques to fabricate the more difficult Nb1Zr composites are described and allowed fabrication of long lengths of .254 mm diameter wire from an 88.9 mm diameter billet. Oxygen was incorporated through the use of SnO2 mixed with tin powder and incorporated into the core. These were compared to samples with Ti+Sn and Cu+Sn cores. Heat treatments covered the range of 700 C to 1000 C. Current density vs. H, grain size, and reaction percentages are provided for the materials tested. The Oxygen gave superior results in the temperature range of 815-1000 C. It also stabilized the filament geometry of the array in comparison to the other additions at the higher temperatures. At 815 C a peak in layer Jc yielded values of 2537 A/mm2 at 12 T and 1353 A/mm2 at 15T, 8-22% and 30-73% greater respectively than 700 C values. Results with Oxygen at high temperature show the possibility of high speed continuous reaction of the composite versus the current batch or react in place methods. In general the Ti additions gave superior results at the lower reaction temperature. Future work is suggested to determine if the 815 C reaction temperature can lead to higher current density in high tin (Nb1Zr+Ox)3Sn conductors. A second technique incorporated oxygen directly into the Nb1Zr rods through heat treatment with Nb2O5 at 1100 C for 100 hours in vacuum prior to extrusion. The majority of the filaments reduced properly in the composite but some local variations in hardness led to breakage at smaller diameters.

Bruce A. Zeitlin, Eric Gregory

2008-04-07T23:59:59.000Z

228

Alternative Fuels Data Center: Biodiesel Definition  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Definition Definition to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Definition on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Definition on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Definition on Google Bookmark Alternative Fuels Data Center: Biodiesel Definition on Delicious Rank Alternative Fuels Data Center: Biodiesel Definition on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Definition on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Definition Biodiesel is a renewable special fuel that is composed of mono-alkyl esters of long chain fatty acids, derived from vegetable oils or animal fats, and meets the requirements of the ASTM specification D6751. (Reference New

229

Alternative Fuels Data Center: Biodiesel Definition  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Biodiesel Definition Biodiesel Definition to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Definition on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Definition on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Definition on Google Bookmark Alternative Fuels Data Center: Biodiesel Definition on Delicious Rank Alternative Fuels Data Center: Biodiesel Definition on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Definition on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Definition Biodiesel is defined as a renewable, biodegradable, mono alkyl ester combustible liquid fuel that is derived from agricultural plant oils or animal fats and meets ASTM specification D6751-11b. A biodiesel blend is a

230

Alternative Fuels Data Center: Biodiesel Definition  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Biodiesel Definition Biodiesel Definition to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Definition on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Definition on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Definition on Google Bookmark Alternative Fuels Data Center: Biodiesel Definition on Delicious Rank Alternative Fuels Data Center: Biodiesel Definition on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Definition on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Definition Biodiesel is defined as a fuel comprised of mono-alkyl esters of long chain fatty acids derived from vegetable oils or animal fats, either in pure form or mixed in any combination with petroleum-based diesel fuel. The

231

Alternative Fuels Data Center: Biodiesel Definition  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Biodiesel Definition Biodiesel Definition to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Definition on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Definition on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Definition on Google Bookmark Alternative Fuels Data Center: Biodiesel Definition on Delicious Rank Alternative Fuels Data Center: Biodiesel Definition on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Definition on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Definition Biodiesel fuel is defined as a mono alkyl ester of long chain fatty acids derived from vegetable oils or animal fats for use in compression-ignition engines and meets the requirements of the ASTM specification D6751 in

232

Alternative Fuels Data Center: Biodiesel Definition and Specification  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Biodiesel Definition Biodiesel Definition and Specification to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Definition and Specification on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Definition and Specification on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Definition and Specification on Google Bookmark Alternative Fuels Data Center: Biodiesel Definition and Specification on Delicious Rank Alternative Fuels Data Center: Biodiesel Definition and Specification on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Definition and Specification on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Definition and Specification Biodiesel is defined as a fuel that is comprised of mono-alkyl esters of

233

Alternative Fuels Data Center: Biodiesel Definition and Specifications  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Biodiesel Definition Biodiesel Definition and Specifications to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Definition and Specifications on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Definition and Specifications on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Definition and Specifications on Google Bookmark Alternative Fuels Data Center: Biodiesel Definition and Specifications on Delicious Rank Alternative Fuels Data Center: Biodiesel Definition and Specifications on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Definition and Specifications on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Definition and Specifications Biodiesel is defined as a fuel that is comprised only of mono-alkyl esters

234

Alternative Fuels Data Center: Biodiesel and Green Diesel Definitions  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Biodiesel and Green Biodiesel and Green Diesel Definitions to someone by E-mail Share Alternative Fuels Data Center: Biodiesel and Green Diesel Definitions on Facebook Tweet about Alternative Fuels Data Center: Biodiesel and Green Diesel Definitions on Twitter Bookmark Alternative Fuels Data Center: Biodiesel and Green Diesel Definitions on Google Bookmark Alternative Fuels Data Center: Biodiesel and Green Diesel Definitions on Delicious Rank Alternative Fuels Data Center: Biodiesel and Green Diesel Definitions on Digg Find More places to share Alternative Fuels Data Center: Biodiesel and Green Diesel Definitions on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel and Green Diesel Definitions Biodiesel is defined as a fuel that is comprised of mono-alkyl esters of

235

Alternative Fuels Data Center: Biodiesel and Renewable Fuel Definitions  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Biodiesel and Biodiesel and Renewable Fuel Definitions to someone by E-mail Share Alternative Fuels Data Center: Biodiesel and Renewable Fuel Definitions on Facebook Tweet about Alternative Fuels Data Center: Biodiesel and Renewable Fuel Definitions on Twitter Bookmark Alternative Fuels Data Center: Biodiesel and Renewable Fuel Definitions on Google Bookmark Alternative Fuels Data Center: Biodiesel and Renewable Fuel Definitions on Delicious Rank Alternative Fuels Data Center: Biodiesel and Renewable Fuel Definitions on Digg Find More places to share Alternative Fuels Data Center: Biodiesel and Renewable Fuel Definitions on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel and Renewable Fuel Definitions Biodiesel is defined as a renewable, biodegradable, mono alkyl ester

236

Alternative Fuels Data Center: Biodiesel Producer Requirements  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Biodiesel Producer Biodiesel Producer Requirements to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Producer Requirements on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Producer Requirements on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Producer Requirements on Google Bookmark Alternative Fuels Data Center: Biodiesel Producer Requirements on Delicious Rank Alternative Fuels Data Center: Biodiesel Producer Requirements on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Producer Requirements on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Producer Requirements Biodiesel is defined as a fuel that is composed of mono-alkyl esters of long-chain fatty acids derived from plant or animal matter, meets the

237

Alcohol to Ester 21 ALCOHOL TO ESTER  

E-Print Network [OSTI]

.) Attach a Claisen adapter to the flask. Place a thermometer adapter with a thermometer in the main arm of the Claisen adapter so that the thermometer point is immersed in the liquid (but not so deep sulfuric acid (may be strong exotherm). Rapidly plug the Claisen adapter (with thermometer and condenser

Jasperse, Craig P.

238

Investigations on 2,3?-Biquinolyl. 16. The Regioselectivity of Reduction of 1-Alkyl-3-(2-quinolyl)quinolinium and 1,1?-Dialkyl-3,3?-di(2-quinolyl)-1,1?,4,4?-biquinolyl Iodides Using Metallic Zinc, Lithium and Potassium  

Science Journals Connector (OSTI)

The reaction of 1-alkyl-3-(2-quinolyl)quinolinium iodides with excess zinc in THF gives a diastereomeric mixture ... ,4?-tetrahydro-4,4?-biquinolyls. An excess of lithium in THF gives a mixture of 1? ... with the...

A. V. Aksenov; A. V. Sarapii; O. A. Antonova…

239

Characteristics of the performance and emissions of a HSDI diesel engine running with cottonseed oil or its methyl ester and their blends with diesel fuel  

Science Journals Connector (OSTI)

An experimental study has been conducted to evaluate the use of various blends of cottonseed oil or its methyl ester (bio-diesel) with diesel fuel, in blend ratios from 10/90 up to 100/0, in a fully instrumented, four-stroke, High Speed Direct Injection (HSDI), Ricardo/Cussons 'Hydra' diesel engine. The tests were conducted using each of the above fuel blends or neat fuels, with the engine working at a medium and a high load. Volumetric fuel consumption, exhaust smokiness and exhaust-regulated gas emissions such as nitrogen oxides, carbon monoxide and unburnt hydrocarbons were measured. The differences in the performance and exhaust emissions from the baseline operation of the engine, that is, when working with neat diesel fuel, were determined and compared, as well as the differences between cottonseed oil or its methyl ester and their blends. Theoretical aspects of diesel engine combustion were used to aid the correct interpretation of the engine behaviour.

Constantine D. Rakopoulos; Kimon A. Antonopoulos; Dimitrios C. Rakopoulos; Emmanuel C. Kakaras; Efthimios G. Pariotis

2007-01-01T23:59:59.000Z

240

A comparative evaluation of Al 2 O 3 coated low heat rejection diesel engine performance and emission characteristics using fuel as rice bran and pongamia methyl ester  

Science Journals Connector (OSTI)

In this study for the first time a nanoceramic Al 2 O 3 was used as a coatingmaterial in the low heat rejection engine concept. Experiments were conducted on single cylinder four stroke water cooled and direct injection diesel engine. First the engine was tested at different load conditions without coating. Then combustion chamber surfaces (cylinder head cylinder liner valves and piston crown face) were coated with nanoceramic material of Al 2 O 3 using plasma spray method. Comparative evaluation on performance and emission characteristics using fuel as rice bran methyl ester pongamia methyl ester and biodiesel/diesel fuel mixtures was studied in the ceramiccoated and uncoated engines under the same running conditions. An increase in engine power and a decrease in specific fuel consumption as well as significant improvements in exhaust gas emissions (except NOx) and smoke density were observed in the ceramiccoated engines compared with those of the uncoated engine.

M. Mohamed Musthafa; S. P. Sivapirakasam; M. Udayakumar

2010-01-01T23:59:59.000Z

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


241

Novel Class of Benzoic Acid Ester Derivatives as Potent PDE4 Inhibitors for Inhaled Administration in the Treatment of Respiratory Diseases  

Science Journals Connector (OSTI)

A series of novel ester derivatives of 1-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-(3,5-dichloropyridin-4-yl) ethanol have been synthesized and evaluated for inhibitory activity toward cAMP-specific phosphodiesterase-4 (PDE4). ... Intratracheal administration of compound 32a was performed by placing the micronized drug blended with lactose into a dry powder insufflator (Penn Century, Philadelphia, PA, USA). ...

Elisabetta Armani; Gabriele Amari; Andrea Rizzi; Renato De Fanti; Eleonora Ghidini; Carmelida Capaldi; Laura Carzaniga; Paola Caruso; Matilde Guala; Ilaria Peretto; Elena La Porta; Pier T. Bolzoni; Fabrizio Facchinetti; Chiara Carnini; Nadia Moretto; Riccardo Patacchini; Franco Bassani; Valentina Cenacchi; Roberta Volta; Francesco Amadei; Silvia Capacchi; Maurizio Delcanale; Paola Puccini; Silvia Catinella; Maurizio Civelli; Gino Villetti

2014-01-08T23:59:59.000Z

242

Caffeic acid phenethyl ester downregulates phospholipase D1 via direct binding and inhibition of NF?B transactivation  

SciTech Connect (OSTI)

Highlights: •We found CAFÉ, a natural product that suppresses expression and activity of PLD1. •CAPE decreased PLD1 expression by inhibiting NF?B transactivation. •CAPE rapidly inhibited PLD activity via its binding to a Cys837 of PLD1. •PLD1 downregulation by CAPE inhibited invasion and proliferation of glioma cells. -- Abstract: Upregulation of phospholipase D (PLD) is functionally linked with oncogenic signals and tumorigenesis. Caffeic acid phenethyl ester (CAPE) is an active compound of propolis extract that exhibits anti-proliferative, anti-inflammatory, anti-oxidant, and antineoplastic properties. In this study, we demonstrated that CAPE suppressed the expression of PLD1 at the transcriptional level via inhibition of binding of NF?B to PLD1 promoter. Moreover, CAPE, but not its analogs, bound to a Cys837 residue of PLD1 and inhibited enzymatic activity of PLD. CAPE also decreased activation of matrix metalloproteinases-2 induced by phosphatidic acid, a product of PLD activity. Ultimately, CAPE-induced downregulation of PLD1 suppressed invasion and proliferation of glioma cells. Taken together, the results of this study indicate that CAPE might contribute to anti-neoplastic effect by targeting PLD1.

Park, Mi Hee; Kang, Dong Woo [Department of Molecular Biology, Pusan National University, Busan 609-735 (Korea, Republic of)] [Department of Molecular Biology, Pusan National University, Busan 609-735 (Korea, Republic of); Jung, Yunjin [College of Pharmacy, Pusan National University, Busan 609-735 (Korea, Republic of)] [College of Pharmacy, Pusan National University, Busan 609-735 (Korea, Republic of); Choi, Kang-Yell [Translational Research Center for Protein Function Control, Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul (Korea, Republic of)] [Translational Research Center for Protein Function Control, Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul (Korea, Republic of); Min, Do Sik, E-mail: minds@pusan.ac.kr [Department of Molecular Biology, Pusan National University, Busan 609-735 (Korea, Republic of)

2013-12-06T23:59:59.000Z

243

Evaluation of RME (rapeseed methyl ester) and mineral diesel fuels behaviour in quiescent vessel and EURO 5 engine  

Science Journals Connector (OSTI)

Abstract Alternative diesel fuels for internal combustion engines have grown significantly in interest in the last decade. This is due to the potential benefits in pollutant emissions and particulate matter reduction. Nevertheless at possible increase in nitrogen oxide (NOx), and almost certainly increase of fuel consumption have been observed. In this paper, mineral diesel and RME (rapeseed methyl ester) fuels have been characterized in a non-evaporative spray chamber and in an optically-accessible single-cylinder engine using a Common Rail injector (8 holes, 148° cone opening angle and 480 cc/30s@10 MPa flow number) to measure the spatial fuel distribution, the temporal evolution and the vaporization–combustion processes. The injection process and mixture formation have been investigated at the Urban Driving Cycle ECE R15: 1500 rpm at 0.2 MPa of break mean effective pressure. Characteristic parameters of the spray like penetration length and liquid fuel distribution have been analysed and they have been correlated with the exhaust gaseous and particulate matter emissions. In the spray-analysis in non-evaporative conditions, short events (pilot) are mostly affected by asymmetries in the fuel distributions with noticeable standard deviations at low injected quantities. In the engine tests, the jets reached immediately the stabilization. A comparative analysis on the liquid phase of the spray, in non-evaporative and evaporative conditions, has permitted to investigate better the mixture formation. Its effect on pollutant emissions has been analysed for both fuels.

Luigi Allocca; Ezio Mancaruso; Alessandro Montanaro; Luigi Sequino; Bianca Maria Vaglieco

2014-01-01T23:59:59.000Z

244

An experimental study of gaseous exhaust emissions of diesel engine using blend of natural fatty acid methyl ester  

Science Journals Connector (OSTI)

Vegetable oil form in Natural Fatty Acid Methyl Ester (FAME) has their own advantages: first of all they are available everywhere in the world. Secondly, they are renewable as the vegetables which produce oil seeds can be planted year after year. Thirdly, they are friendly with our environment, as they seldom contain sulphur element in them. This makes vegetable fuel studies become current among the various popular investigations. This study is attempt to optimization of using blend FAME on diesel engine by experimental laboratory. The investigation experimental project is comparison between using blend FAME and base diesel fuel. The engine experiment is conducted with YANMAR TF120M single cylinder four stroke diesel engine set-up at variable engine speed with constant load. The data have been taken at each point of engine speed during the stabilized engine-operating regime. Measurement of emissions parameters at difference engine speed conditions have generally indicated lower in emission NOx, but slightly higher on CO2 emission. The result also shown that the blends FAME are good in fuel consumption and potentially good substitute fuels for diesel engine

Agung Sudrajad; Ismail Ali; Khalid Samo; Danny Faturachman

2012-01-01T23:59:59.000Z

245

Investigation on combustion characteristics of crude rice bran oil methyl ester blend as a heavy duty automotive engine fuel  

Science Journals Connector (OSTI)

In the present work, an attempt was made to test the suitability of crude rice bran oil methyl ester (CRBME) blend as a heavy duty automotive engine fuel. A four stroke, six cylinder direct injection 117.6 kW turbo-charged compression ignition (CI) engine was used for the work. The operation of the engine with CRBME blend showed that the peak pressure increased with lower maximum rate of pressure rise and maximum heat release rate with shorter delay period. Burning rate of the CRBME blend was slower and required a higher crank angle to complete the combustion cycle when compared to diesel. The brake thermal efficiency of the CRBME blend was lower than that of diesel at all speeds except at 2300rpm. As the measured combustion and performance parameters for CRBME blend differs only by a smaller magnitude when compared with diesel, this investigation ensures the suitability of the CRBME blend as fuel for heavy duty automotive engine without any design modifications [Received: August 12, 2010; Accepted: August 29, 2010

S. Saravanan; G. Nagarajan; S. Sampath

2011-01-01T23:59:59.000Z

246

Two-dimensional free-energy surface on the exchange reaction of alkyl chloride/chloride using the QM/MM-MC method  

SciTech Connect (OSTI)

Two-dimensional free-energy surfaces are calculated for alkyl chloride/chloride exchange/inversion reactions: Cl- + RCl (R = Me and t-Bu) surrounded by one hundred H2O molecules as a model of solvent. The methodology of free-energy calculation by perturbation theory based on a mixed-Hamiltonian model (QM/MM) combined with Monte Carlo sampling of the solvent configurations was used to obtain the changes in solvation free energy. We devised a special procedure to analyze the two-dimensional free-energy surfaces to gain unique insight into the differences in the reaction mechanisms between the two systems. The inversion reaction path for R = t-Bu on the free-energy surface is found to proceed in an asynchronous way within a concerted framework via the ion-pair region. This is in contrast to the R = Me system that proceeds as a typical SN2 reaction. This work was supported by the U.S. Department of Energy's (DOE) Office of Basic Energy Sciences, Chemical Sciences program. The Pacific Northwest National Laboratory is operated by Battelle for DOE.

Ohisa, M.; Yamataka, H.; Dupuis, Michel; Aida, Misako

2007-12-05T23:59:59.000Z

247

Accurate and Reliable Quantification of Total Microalgal Fuel Potential as Fatty Acid Methyl Esters by in situ Transesterfication  

SciTech Connect (OSTI)

In the context of algal biofuels, lipids, or better aliphatic chains of the fatty acids, are perhaps the most important constituents of algal biomass. Accurate quantification of lipids and their respective fuel yield is crucial for comparison of algal strains and growth conditions and for process monitoring. As an alternative to traditional solvent-based lipid extraction procedures, we have developed a robust whole-biomass in situ transesterification procedure for quantification of algal lipids (as fatty acid methyl esters, FAMEs) that (a) can be carried out on a small scale (using 4-7 mg of biomass), (b) is applicable to a range of different species, (c) consists of a single-step reaction, (d) is robust over a range of different temperature and time combinations, and (e) tolerant to at least 50% water in the biomass. Unlike gravimetric lipid quantification, which can over- or underestimate the lipid content, whole biomass transesterification reflects the true potential fuel yield of algal biomass. We report here on the comparison of the yield of FAMEs by using different catalysts and catalyst combinations, with the acid catalyst HCl providing a consistently high level of conversion of fatty acids with a precision of 1.9% relative standard deviation. We investigate the influence of reaction time, temperature, and biomass water content on the measured FAME content and profile for 4 different samples of algae (replete and deplete Chlorella vulgaris, replete Phaeodactylum tricornutum, and replete Nannochloropsis sp.). We conclude by demonstrating a full mass balance closure of all fatty acids around a traditional lipid extraction process.

Laurens, L. M. L.; Quinn, M.; Van Wychen, S.; Templeton, D. W.; Wolfrum, E. J.

2012-04-01T23:59:59.000Z

248

Fundamental Reaction Pathways and Free-Energy Barriers for Ester Hydrolysis of Intracellular Second-Messenger 3‘,5‘-Cyclic Nucleotide  

Science Journals Connector (OSTI)

We have performed a series of first-principles electronic structure calculations to study competing reaction pathways and the corresponding free-energy barriers for the ester hydrolysis of intracellular second-messenger adenosine 3‘,5‘-cyclic monophosphate (cAMP) and related phosphodiesters including trimethylene phosphate (TMP). ... 3‘,5‘-Cyclic nucleotides, such as adenosine 3‘,5‘-cyclic monophosphate (cAMP) found by Sutherland and Rall nearly a half-century ago,1 are intracellular second messengers that are essential to vision, muscle contraction, neurotransmission, exocytosis, cell growth, and differentiation. ...

Xi Chen; Chang-Guo Zhan

2004-03-31T23:59:59.000Z

249

Effect of palm methyl ester-diesel blends performance and emission of a single-cylinder direct-injection diesel engine  

Science Journals Connector (OSTI)

The purpose of this study is to investigate engine performance and exhaust emission when using several blends of neat palm oil methyl ester (POME) with conventional diesel (D2) in a small direct injection diesel engine and to compare the outcomes to that of the D2 fuel. Engine performances exhaust emissions and some other important parameters were observed as a function of engine load and speed. In addition the effect of modifying compression ratio was also carried out in this study. From the engine experimental work neat and blended fuels behaved comparably to diesel (D2) in terms of fuel consumption thermal efficiency and rate of heat released. Smoke density showed better results than that emitted by D2 operating under similar conditions due to the presence of inherited oxygen and lower sulphur content in the biofuel and its blends. The emissions of CO CO2 and HC were also lower using blended mixtures and in its neat form. However NOx concentrations were found to be slight higher for POME and its blends and this was largely due to higher viscosity of POME and possibly the presence of nitrogen in the palm methyl ester. General observation indicates that biofuel blends can be use without many difficulties in this type of engine but for optimized operation minor modifications to the engine and its auxiliaries are required.

Mazlan Said; Azhar Abdul Aziz

2012-01-01T23:59:59.000Z

250

Automated Strong Cation Exchange Extraction of Fatty Acid Esters of 3-(N-Phenylamino)-1,2-propanediol from Oil Samples for Routine Quantification by HPLC-APCI/MS/MS  

Science Journals Connector (OSTI)

Fatty acid esters of 3-(N-phenylamino)-1,2-propanediol are currently considered the best chemical markers of toxic oils related to the Spanish toxic oil syndrome. ... The automatic procedure was carried out using a Spark Holland Marathon automatic injector connected to a Prospekt unit provided with a solvent delivery unit for automated SPE (Figure 2). ...

Rosa E. Calaf; Juana Peña; Sonia Paytubi; Montserrat Carrascal; Manuel Posada; Emilio Gelpi; Joaquin Abian

2001-10-05T23:59:59.000Z

251

Densities and isobaric vapor-liquid equilibria of butyl esters (methanoate to butanoate) with ethanol at 101.32 kPa  

SciTech Connect (OSTI)

Vapor-liquid equilibrium and densities at 101.32 kPa have been determined for the binary systems formed by four butyl esters (from methanoate to butanoate) with ethanol. The four systems exhibit positive deviations from ideal behavior, and all data (p-T-x-y) were found to be thermodynamically consistent. The activity coefficients and the dimensionless function G{sup E}/RT of the solution were correlated with its concentration by different equations. Am azeotrope was found in the mixture butyl methanoate (1) + ethanol (2) at T = 350.9 K and x{sub 1} = y{sub 1} = 0.088. The group contribution models ASOG and modified UNIFAC gave fair predictions.

Gonzalez, E.; Ortega, J. [Univ. of Las Palmas de Gran Canaria (Spain)

1995-11-01T23:59:59.000Z

252

Involvement of a chromatin modifier in response to mono-(2-ethylhexyl) phthalate (MEHP)-induced Sertoli cell injury: Probably an indirect action via the regulation of NF?B/FasL circuitry  

SciTech Connect (OSTI)

Highlights: •MTA1 expression is upregulated in SCs upon MEHP treatment. •Knockdown of MTA1 in SCs impairs the MEHP-induced NF?B signaling activation. •Knockdown of MTA1 inhibits recruitment of NF?B onto FasL promoter in MEHP-treated SCs. -- Abstract: The Fas/FasL signaling pathway, controlled by nuclear factor-?B (NF?B) at the transcriptional level, is critical for triggering germ cell apoptosis in response to mono-(2-ethylhexyl) phthalate (MEHP)-induced Sertoli cell (SC) injury, but the exact regulation mechanism remain unknown. Here, we discovered that expression level of Metastasis associated protein 1 (MTA1), a component of the Mi-2/nucleosome remodeling and deacetylase complex, was upregulated in SCs during the early recovery after MEHP exposure. This expression change was in line with the dynamic changes in germ cell apoptosis in response to MEHP treatment. Furthermore, a knockdown of MTA1 by RNAi in SCs was found to impair the MEHP-induced early activation of NF?B pathway and abolish the recruitment of NF?B onto FasL promoter, which consequently diminished the MEHP-triggered FasL induction. Considering that Fas/FasL is a well characterized apoptosis initiating signaling during SCs injury, our results point to a potential “switch on” effect of MTA1, which may govern the activation of NF?B/FasL cascade in MEHP-insulted SCs. Overall, the MTA1/NF?B/FasL circuit may serve as an important defensive/repairing mechanism to help to control the germ cell quality after SCs injury.

Chen, Shiwei [Department of Urology, 174th Hospital of PLA, Fujian 361001 (China)] [Department of Urology, 174th Hospital of PLA, Fujian 361001 (China); Dong, Yushu [Department of Neurosurgery, 463rd Hospital of PLA, Shenyang 110042 (China)] [Department of Neurosurgery, 463rd Hospital of PLA, Shenyang 110042 (China); Xu, Chun; Jiang, Liming; Chen, Yongjie; Jiang, Cheng [Department of Urology, 174th Hospital of PLA, Fujian 361001 (China)] [Department of Urology, 174th Hospital of PLA, Fujian 361001 (China); Hou, Wugang, E-mail: gangwuhou@163.com [Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032 (China)] [Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032 (China); Li, Wei, E-mail: liweipepeyato@163.com [Department of Human Anatomy, Histology and Embryology, Fourth Military Medical University, Xi’an 710032 (China)] [Department of Human Anatomy, Histology and Embryology, Fourth Military Medical University, Xi’an 710032 (China)

2013-11-01T23:59:59.000Z

253

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

254

Sorption behavior of Ga(III) and In(III) into a microcapsule containing long-chain alkylphosphonic acid monoester .  

E-Print Network [OSTI]

??The sorption behavior of gallium and indium into a microcapsule containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester is investigated. The effects of pH and metal concentration on… (more)

Kamio, E.

2005-01-01T23:59:59.000Z

255

PROPERTY CHANGES OF CYANATE ESTER/EPOXY INSULATION SYSTEMS CAUSED BY AN ITER-LIKE DOUBLE IMPREGNATION AND BY REACTOR IRRADIATION  

SciTech Connect (OSTI)

Because of the double pancake design of the ITER TF coils the insulation will be applied in several steps. As a consequence, the conductor insulation as well as the pancake insulation will undergo multiple heat cycles in addition to the initial curing cycle. In particular the properties of the organic resin may be influenced, since its heat resistance is limited. Two identical types of sample consisting of wrapped R-glass/Kapton layers and vacuum impregnated with a cyanate ester/epoxy blend were prepared. The build-up of the reinforcement was identical for both insulation systems; however, one system was fabricated in two steps. In the first step only one half of the reinforcing layers was impregnated and cured. Afterwards the remaining layers were wrapped onto the already cured system, before the resulting system was impregnated and cured again. The mechanical properties were characterized prior to and after irradiation to fast neutron fluences of 1 and 2x10{sup 22} m{sup -2}(E>0.1 MeV) in tension and interlaminar shear at 77 K. In order to simulate the pulsed operation of ITER, tension-tension fatigue measurements were performed in the load controlled mode. The results do not show any evidence for reduced mechanical strength caused by the additional heat cycle.

Prokopec, R.; Humer, K.; Fillunger, H.; Maix, R. K.; Weber, H. W. [Atominstitut, Vienna University of Technology, 1020 Wien (Austria)

2010-04-08T23:59:59.000Z

256

A comparative study of Al2O3 coated LHR engine characteristic using rice bran and mahua methyl ester as a fuel  

Science Journals Connector (OSTI)

In this study, for the first time, a nano material of Al2O3 was used as ceramic layer in low heat rejection engine concepts. The coating was carried out by plasma spray method on the combustion chamber surfaces (cylinder head, cylinder liner, valves and crown surfaces) of the DI diesel engine. A comparative evaluation of Al2O3 coated engine was carried out between two types of biodiesel (methyl ester of rice bran and mahua oil) and diesel. Experiments were conducted on single cylinder, four strokes, water cooled and direct injection diesel engine. The test run was also repeated for uncoated engine and compared. The results indicated that, an increase in engine power (6.3-11.4%) and decrease in specific fuel consumption (0.8-10.9%), as well as significant improvements in exhaust gas emissions (except NOx) and smoke opacity (19.6-28.9%) were observed in Al2O3 coated engine compared with that of the uncoated engine.

M. Mohamed Musthafa; S.P. Sivapirakasam; M. Udayakumar

2012-01-01T23:59:59.000Z

257

Response surface methodology based prediction of engine performance and exhaust emissions of a diesel engine fuelled with canola oil methyl ester  

Science Journals Connector (OSTI)

The objective of this study was to investigate the effect of fuel injection timing and engine speed on engine performance and exhaust emission parameters using a diesel engine running on canola oil methyl ester (COME). COME was produced by means of the transesterification method and tested at full load with various engine speeds by changing fuel injection timing (12 15 and 18?°CA) in a turbocharged direct injection (TDI) diesel engine. The experiments were designed using response surface methodology (RSM) which is one of the well-known design of experiment technique for predicting the responses engine performance and exhaust emission parameters from a second order polynomial equation obtained by modeling the relation between fuel injection timing (t) and engine speed (n) parameters. By using the second order full quadratic RSM models obtained from experimental results responses brake power brake torque brake mean effective pressure brake specific fuel consumption brake thermal efficiency exhaust gas temperature oxygen (O2) oxides of nitrogen (NOx) carbon dioxide (CO2) carbon monoxide (CO) and light absorption coefficient (K) affected from factors t and n were able to be predicted by 95% confidence interval.

2013-01-01T23:59:59.000Z

258

Abscisic Acid and its ß-D-Glucopyranosyl Ester in Saplings of Scots Pine (Pinus sylvestris L.) in Relation to Water Stress  

Science Journals Connector (OSTI)

Summary In different shoot parts of Scots pine saplings abscisic acid (ABA) and its ß-D-glucopyranosyl ester (ABA-glu) have been identified by chromatographical methods and mass spectrometry. Changes in the endogenous levels of ABA and its main metabolite ABA-glu have been determined by gas chromtography in relation to water stress (1, 2 and 4 h) and rewatering (30 min and 4 h). At the beginning of water stress ABA increased in young shoots and the needles of older parts, but decreased in the axis. Simultaneously an ABA-glu peak occurred especially in the needles indicating that both ABA biosynthesis and metabolism are stimulated by water stress. During 30 min rewatering the ABA level increased in all shoot parts, most intensively in the axis. From the results obtained it can be concluded that the increase of free ABA level at the beginning of water stress is based mainly on ABA biosynthesis, whereas during rewatering a partial re-activation of ABA-glu might be involved.

E. Hoque; W. Dathe; M. Tesche; G. Sembdner

1983-01-01T23:59:59.000Z

259

Engine performance and emissions from the combustion of low-temperature Fischerâ??Tropsch synthetic diesel fuel and biodiesel rapeseed methyl ester blends  

Science Journals Connector (OSTI)

The combustion of oxygenated biodiesel (rapeseed methyl ester (RME)) improves the engine-out particulate matter, hydrocarbon and carbon monoxide (CO) emissions, while the low-temperature Fischerâ??Tropsch synthetic paraffinic diesel fuel improves engine-out NOx, CO, hydrocarbon and particulate matter emissions. Blending synthetic diesel (SD) fuel with oxygenated biodiesel could unlock potential performance synergies in the fuel properties (e.g. O2 content in RME and high cetane number of the synthetic fuels) of such blends and benefit engine performance and emissions. The combustion of synthetic diesel fuel/RME blend, named synthetic diesel B50, has shown similar combustion characteristics to diesel fuel, while simultaneous improvements in engine efficiency and smoke-NOx trade-off were achieved by taking advantage of the fuel's properties. The engine thermal efficiency was dependent on the fuel type, and followed the general trend: synthetic diesel > SDB50 > diesel > RME. Therefore, it has been shown that the design of a synthetic fuel with properties similar to the fuel blends presented in this work could improve engine-out NOx, smoke and hydrocarbon emissions and maintain or improve engine performance.

Kampanart Theinnoi; Athanasios Tsolakis; Sathaporn Chuepeng; Andrew P.E. York; Roger F. Cracknell; Richard H. Clark

2009-01-01T23:59:59.000Z

260

The Brennan Mono-Rail System  

Science Journals Connector (OSTI)

... on one of the sharp curves. In this illustration may be noticed the radiators for cooling the circulating water required for the petrol motors, these radiators being secured to the ... car platform at the other, so as to extend the inclined plane of the platform down to ground-level. The packing cases were then easily shoved off without the assistance ...

1910-03-03T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Elevated Concentrations of Actinides in Mono Lake  

Science Journals Connector (OSTI)

...DISEQUILIBRIUM IN THE NEW-YORK BIGHT AND ITS IMPLICATIONS FOR COASTAL...WATERS FROM SEVERAL CLOSED-BASIN LAKES AND THEIR TRIBUTARIES...21'N, 81 53'W in the Panama Basin. This sta-tion, which is...the center ofa small, deep basin between the Coiba and Malpelo...

R. F. ANDERSON; M. P. BACON; P. G. BREWER

1982-04-30T23:59:59.000Z

262

The use of novel biodegradable, optically active and nanostructured poly(amide-ester-imide) as a polymer matrix for preparation of modified ZnO based bionanocomposites  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer A novel biodegradable and nanostructured PAEI based on two amino acids, was synthesized. Black-Right-Pointing-Pointer ZnO nanoparticles were modified via two different silane coupling agents. Black-Right-Pointing-Pointer PAEI/modified ZnO BNCs were synthesized through ultrasound irradiation. Black-Right-Pointing-Pointer ZnO particles were dispersed homogeneously in PAEI matrix on nanoscale. Black-Right-Pointing-Pointer The effect of ZnO nanoparticles on the properties of synthesized polymer was examined. -- Abstract: A novel biodegradable and nanostructured poly(amide-ester-imide) (PAEI) based on two different amino acids, was synthesized via direct polycondensation of biodegradable N,N Prime -bis[2-(methyl-3-(4-hydroxyphenyl)propanoate)]isophthaldiamide and N,N Prime -(pyromellitoyl)-bis-L-phenylalanine diacid. The resulting polymer was characterized by FT-IR, {sup 1}H NMR, specific rotation, elemental analysis, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) analysis. The synthesized polymer showed good thermal stability with nano and sphere structure. Then PAEI/ZnO bionanocomposites (BNCs) were fabricated via interaction of pure PAEI and ZnO nanoparticles. The surface of ZnO was modified with two different silane coupling agents. PAEI/ZnO BNCs were studied and characterized by FT-IR, XRD, UV/vis, FE-SEM and TEM. The TEM and FE-SEM results indicated that the nanoparticles were dispersed homogeneously in PAEI matrix on nanoscale. Furthermore the effect of ZnO nanoparticle on the thermal stability of the polymer was investigated with TGA and DSC technique.

Abdolmaleki, Amir, E-mail: abdolmaleki@cc.iut.ac.ir [Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of) [Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Mallakpour, Shadpour, E-mail: mallak@cc.iut.ac.ir [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of) [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Borandeh, Sedigheh [Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of)] [Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of)

2012-05-15T23:59:59.000Z

263

Tyrosine hydroxylase is activated and phosphorylated at different sites in rat pheochromocytoma PC 12 cells treated with phorbol ester and forskolin  

SciTech Connect (OSTI)

The effects of phorbol ester (4..beta..-phorbol, 12..beta..-myristate, 13..cap alpha..-acetate; TPA), an activator of Ca/sup + +//phospholipid-dependent protein kinase (PK-C), and forskolin, which stimulates adenylate cyclase and cyclic AMP-dependent protein kinase (cAMP-PK), on the activation and phosphorylation of tyrosine hydroxylase (TH) in rat pheochromocytoma (PC 12) cells were examined. Incubation of the cells with TPA (0.01-1 ..mu..M) or forskolin (0.01-0.1 ..mu..M) produces increases in activation and phosphorylation of TH in a concentration-dependent manner. The stimulatory effects of TPA are dependent on extracellular Ca/sup + +/ and are inhibited by pretreatment of the cells with trifluoperazine (TFP). The effects of forskolin are independent of Ca/sup + +/ and are not inhibited by TFP. In cells treated with forskolin, the time course of the increase in cAMP correlates with the increases in TH activity and phosphorylation. cAMP levels do not increase in cells treated with TPA. There is an increase in the phosphorylation of only one tryptic phosphopeptide derived from TH in cells treated with either forskolin or TPA. The peptide phosphorylated in TPA-treated cells exhibits different elution characteristics on HPLC from that in forskolin-treated cells. The authors conclude that TH in PC 12 cells is phosphorylated on different sites by cAMP-PK and PK-C. Phosphorylation of either of these sites is associated with enzyme activation.

Tachikawa, E.; Tank, A.W.; Weiner, D.H.; Mosimann, W.F.; Yanagihara, N.; Weiner, N.

1986-03-01T23:59:59.000Z

264

Water-soluble polymers and compositions thereof  

DOE Patents [OSTI]

Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, guanidinium groups, amide groups, ester groups, aminodicarboxylic groups, permethylated polyvinylpyridine groups, permethylated amine groups, mercaptosuccinic acid groups, alkyl thiol groups, and N-alkylthiourea groups are disclosed.

Smith, B.F.; Robison, T.W.; Gohdes, J.W.

1999-04-06T23:59:59.000Z

265

Development of high temperature liquid lubricants for low-heat rejection heavy duty diesel engines  

SciTech Connect (OSTI)

Objective was to develop a liquid lubricant that will allow advanced diesel engines to operate at top ring reversal temperatures approaching 500 C and lubricant sump temperatures approaching 250 C. Base stock screening showed that aromatic esters and diesters has the lowest deposit level, compared to polyol esters, poly-alpha-olefins, or refined mineral oil of comparable viscosity. Classical aryl and alkyl ZDP antiwear additives are ineffective in reducing wear with aromatic esters; the phosphate ester was a much better antiwear additive, and polyol esters are more amenable to ZDP treatment. Zeolites and clays were evaluated for filtration.

Wiczynski, T.A.; Marolewski, T.A.

1993-03-01T23:59:59.000Z

266

Acetylene Ester from Aster spinosus  

Science Journals Connector (OSTI)

...STUDIES RELATED TO NATURALLY-OCCURING ACETYLENE COMPOUNDS .6...knowl-edge of the structures of naturally-occurring acetylenes may...ultra-violet or other radiation, or heat was applied to the...conditions which might have arisen naturally can be approximated by thermodynamic...

Jeffrey C. Spitzer; Cornelius Steelink

1964-12-11T23:59:59.000Z

267

Sugar Esters: Fact or Fantasy?  

Science Journals Connector (OSTI)

Sugar Research Foundation gets broad process patent, but cost, process problems slow commercialization ... Many are plagued by scaleup and other process snags. ...

1959-07-13T23:59:59.000Z

268

Delayed neurotoxicity of phenylphosphonothioate esters  

Science Journals Connector (OSTI)

...Moscovitch, in Handbook of Behavioral Neurobiology...Grason-Stadler power supply (Model E...visual and motor systems. In this connection...central ner-vous system cannot. The observation...regeneration or restoration of function of the...cen-tral nervous system. Application of...

MB Abou-Donia

1979-08-17T23:59:59.000Z

269

The Mechanism of Action of Alkylating Agents  

Science Journals Connector (OSTI)

...agents. With regard to Sn2 reactors it was possible...correlate the reactivity of the Sn2 and Sn1 reactors with their...the likelihood of their reaction with the various cellular...CHART 4. "Mechanism of Sn2 reaction In second-order nucleophiic...

G. P. Warwick

1963-09-01T23:59:59.000Z

270

Graphene composite for improvement in the conversion efficiency of flexible poly 3-hexyl-thiophene:[6,6]-phenyl C{sub 71} butyric acid methyl ester polymer solar cells  

SciTech Connect (OSTI)

The solution of thin graphene-sheets obtained from a simple ultrasonic exfoliation process was found to chemically interact with [6,6]-phenyl C{sub 71} butyric acid methyl ester (PCBM) molecules. The thinner graphene-sheets have significantly altered the positions of highest occupied molecular orbital and lowest unoccupied molecular orbital of PCBM, which is beneficial for the enhancement of the open circuit voltage of the solar cells. Flexible bulk heterojunction solar cells fabricated using poly 3-hexylthiophene (P3HT):PCBM-graphene exhibited a power conversion efficiency of 2.51%, which is a ?2-fold increase as compared to those fabricated using P3HT:PCBM. Inclusion of graphene-sheets not only improved the open-circuit voltage but also enhanced the short-circuit current density owing to an improved electron transport.

Chauhan, A. K., E-mail: akchau@barc.gov.in, E-mail: akc.barc@gmail.com; Gusain, Abhay; Jha, P.; Koiry, S. P.; Saxena, Vibha; Veerender, P.; Aswal, D. K.; Gupta, S. K. [Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India)

2014-03-31T23:59:59.000Z

271

E-Print Network 3.0 - alkyl-alkyl bond formation Sample Search...  

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

Molecular Physics, Vol. 105, Nos. 23, 20 January10 February 2007, 261272 Summary: -SAFT-VR approach In the SAFT-VR approach molecules are modelled as chains of tangentially...

272

Mono County, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

9218608°, -118.9528645° 9218608°, -118.9528645° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.9218608,"lon":-118.9528645,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

273

Surface spectroscopic studies of mono- and bimetallic model catalysts  

E-Print Network [OSTI]

dipole theory....................................46 14 Calibration of Pd coverage on Au(111). ..............................................................49 15 IRAS of CO adsorbed on Cu(100) between 23 and 180 K.... .................................52 16 IRAS of NO adsorbed on Cu(100) at the indicated NO exposure. ......................54 x FIGURE 17 Comparison of 14NO, 15NO, and a mixture of 14NO and 15NO adsorbed onto Cu(100...

Yi, Cheol-Woo

2007-04-25T23:59:59.000Z

274

Boundary mixing and nutrient fluxes in Mono Lake, California  

Science Journals Connector (OSTI)

we inferred that most heat flux occurred due to boundary mixing at the base of the pycnocline ..... squares fit of the power spectral densities of the temperature-.

1999-05-20T23:59:59.000Z

275

Coaxial Mono-Energetic Gamma Generator for Active Interrogation  

E-Print Network [OSTI]

of Energy's National Nuclear Security Administration underof Homeland Security, Domestic Nuclear Detection Office

Ludewigt, Bernhard A.

2010-01-01T23:59:59.000Z

276

Coaxial Mono-Energetic Gamma Generator for Active Interrogation  

E-Print Network [OSTI]

Using Low-Energy Nuclear Reactions”, in Proceedings of SPIE:designed that uses low-energy nuclear reactions to produce aidea of using low-energy nuclear reactions to produce the

Ludewigt, Bernhard A.

2010-01-01T23:59:59.000Z

277

Sandia National Laboratories: fatty acid ethyl esters  

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

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

278

Tallow Biodiesel: Properties Evaluation and Consumption Tests in a Diesel Engine  

Science Journals Connector (OSTI)

Tallow Biodiesel: Properties Evaluation and Consumption Tests in a Diesel Engine ... Then, the mixture of alkyl esters of fatty acids from vegetable oils or animal fats is named biodiesel and used in diesel engines, pure or blended with mineral diesel. ... Industrial & Engineering Chemistry Research (1998), 37 (9), 3768-3771 CODEN: IECRED; ISSN:0888-5885. ...

Maria Silvana Aranda Moraes; Laiza Canielas Krause; Michele Espinosa da Cunha; Candice Shimitt Faccini; Eliana Weber de Menezes; Renato Cataluña Veses; Maria Regina Alves Rodrigues; Elina Bastos Caramão

2008-03-15T23:59:59.000Z

279

Solvent extraction studies of holmium with acidic extractants  

SciTech Connect (OSTI)

Liquid-liquid extraction studies of holmium with 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester, naphthenic, and Versatic 10 acids have been carried out. The nature of the extracted species and the extraction equilibrium constants of these systems have been determined from aqueous nitrate solution. The extraction mechanism and complexation models have been proposed. 11 refs., 8 figs.

Gaikwad, A.G.; Damodaran, A.D. (CSIR, Trivandrum (India))

1993-03-01T23:59:59.000Z

280

Deconjugative Conversion of r-Alkynyl Esters to r,r-Disubstituted -Alkynyl Esters  

E-Print Network [OSTI]

. Optimal conditions included the use of 2 equiv of lithium diisopropylamide in THF with HMPA of 2 equiv of lithium diisopropyl- amide (LDA). Our studies indicated that 2 equiv of LDA most likely led to the formation of dianion inter- mediate A. Upon the addition of excess electrophile (TMS-Cl, Me

Lepore, Salvatore D.

Note: This page contains sample records for the topic "mono alkyl ester" 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

Microbial degradation of n-alkyl tetrahydrothiophenes found in petroleum.  

Science Journals Connector (OSTI)

...THTA and THTC. Quantitation of tetrahydrothiophene ring-containing products in 28-day-old...THTA and THTC. Quantitation of tetrahydrothiophene ring-containing products in 28-day-old...THTA and THTC. Quantitation of tetrahydrothiophene ring- containing products in 28-day-old...

P M Fedorak; J D Payzant; D S Montgomery; D W Westlake

1988-05-01T23:59:59.000Z

282

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

283

?, -Alkyl Dicarboxylic Acids: Characterization by Isocratic Anion-Exchange Chromatography  

Science Journals Connector (OSTI)

......Box 20537, Nicosia, Cyprus Department of Chemical...addressed: Department of Natural Sciences, School of...Sciences, University of Cyprus, P.O. Box 20537, Nicosia, Cyprus Journal of Chromatographic...Eq 3 where R is the gas constant and T the......

Asad R. Khan; Costas S. Patrickios

1999-05-01T23:59:59.000Z

284

Alkylation Sensitivity Screens Reveal a Conserved Cross-species Functionome  

Science Journals Connector (OSTI)

...high-resolution, low-energy collimator was used...adverse events) was a constellation of symptoms consisting...half-life (13 h) and low-energy emission (159 keV...our knowledge, the constellation of mucocutaneous symptoms...

David Svilar; Madhu Dyavaiah; Ashley R. Brown; Jiang-bo Tang; Jianfeng Li; Peter R. McDonald; Tong Ying Shun; Andrea Braganza; Xiao-hong Wang; Salony Maniar; Claudette M. St Croix; John S. Lazo; Ian F. Pollack; Thomas J. Begley; and Robert W. Sobol

2012-12-01T23:59:59.000Z

285

Ionic Liquids as Green Solvents for Alkylation and Acylation  

Science Journals Connector (OSTI)

Many clean solvents like water, ionic liquids, supercritical fluid, polyglycol, fluorine-containing solvents, and so on are employed to replace the conventional organic solvents. Among these, ionic liquids have a...

Zhongkui Zhao; Yitao Dai

2012-01-01T23:59:59.000Z

286

Gas Chromatographic Analysis of Alkyl-Substituted Paraffins  

Science Journals Connector (OSTI)

......and, in particular, methyl-sub stituted paraffins, are important constituents o f petroleum crudes, products o f oil shale thermolysis and hydrothermolysis, catalytic cracking and hydrocracking o f petroleum fractions and individual compounds......

Y.V. Kissin; G.P. Feulmer

1986-02-01T23:59:59.000Z

287

Alkyl Amides and Nitriles as Novel Tracers for Biomass Burning  

Science Journals Connector (OSTI)

Ammonia emissions into the atmosphere have been reported for numerous sources, as for example natural decay in soils, sewage treatment plants, livestock waste, and ammonia-based fertilizers (42, 43). ... Anal. of emissions from the burning of dried tropical grasses and agricultural wastes in a small-scale app. ... under the smoldering conditions of residential wood combustion, as compared to the active burning of forest fires and slash burns, incomplete combustion resulted in the preservation of high levels of the natural products. ...

Bernd R. T. Simoneit; A. I. Rushdi; M. R. bin Abas; B. M. Didyk

2002-11-23T23:59:59.000Z

288

Enhancement of the Nuclear Reactivity of Alkylating Agents by Prednisolone  

Science Journals Connector (OSTI)

...Alberts, B. M.. and Doty. P. Characterization of a naturally occuring, cross- linked fraction of DNA I. Nature of the...and Youdale. T. A comparison of the effects of radiation and inhibitors of oxidative phosphorylation on the...

Ray Wilkinson; Michael S. C. Birbeck; and Kenneth R. Harrap

1979-10-01T23:59:59.000Z

289

Inductive Effect of Alkyl Chains on Alcohol Dehydration at Bridge...  

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

oxygen vacancy defects. For alcohols, it is well-established that their dissociation on bridge-bonded oxygen vacancies (BBOV’s) of a prototypical TiO2(110) surface proceeds...

290

Batch polymerization of styrene initiated by alkyl lithiums  

E-Print Network [OSTI]

committee is appreciated. Acknowledgements are extended to Sayeed Hasan for his suggestions and Miss Deborah Harrison for her assistance during the course of this work. Financial support by the National Science Foundation and Texas Engineering... RESUJ. TS FOR RUN-II, . . . 34 VII THEORETICAL AFJD EXPERIFIENTAL DATA J'OR HASAV ' S SAMPLES RUiV-I. 35 VIII THFORETICAL AND EXPFRIMENTAL DATA F' OR HASAN'S SAMPLES RUN-II 36 LIST OF FIGURES Figure Page STYRENE CONVERSION VS REAL TIME STYRENE...

Desai, Rashmi R

1970-01-01T23:59:59.000Z

291

Fragmentations of Deprotonated Alkyl Hydroperoxides (ROO Upon Collisional Activation  

E-Print Network [OSTI]

of these degradation products are acrolein, malondialdehyde and 4-hydroxy-2-nonenal, which are known to be genotoxic

Ellison, Barney

292

Early transitional metal alkyl, alkylidene, and alkylidyne chemistry  

E-Print Network [OSTI]

CHAPTER 1. Zirconium and hafnium complexes of several new unsymmetric diamide ligands have been prepared and their proficiency in olefin polymerization reactions evaluated. The first set of supporting ligands examined are ...

Tonzetich, Zachary John

2007-01-01T23:59:59.000Z

293

Production of biodiesel using expanded gas solvents  

SciTech Connect (OSTI)

A method of producing an alkyl ester. The method comprises providing an alcohol and a triglyceride or fatty acid. An expanding gas is dissolved into the alcohol to form a gas expanded solvent. The alcohol is reacted with the triglyceride or fatty acid in a single phase to produce the alkyl ester. The expanding gas may be a nonpolar expanding gas, such as carbon dioxide, methane, ethane, propane, butane, pentane, ethylene, propylene, butylene, pentene, isomers thereof, and mixtures thereof, which is dissolved into the alcohol. The gas expanded solvent may be maintained at a temperature below, at, or above a critical temperature of the expanding gas and at a pressure below, at, or above a critical pressure of the expanding gas.

Ginosar, Daniel M [Idaho Falls, ID; Fox, Robert V [Idaho Falls, ID; Petkovic, Lucia M [Idaho Falls, ID

2009-04-07T23:59:59.000Z

294

Viscosity of aqueous and cyanate ester suspensions containing alumina nanoparticles.  

E-Print Network [OSTI]

??Concentrated aqueous alumina nanoparticle suspensions with additions of saccharides such as fructose, glucose, sucrose, and others were studied by rheometry and low temperature differential scanning… (more)

Lawler, Katherine Ann

2009-01-01T23:59:59.000Z

295

Numerical models of phosphate esters in the Chattahoochee River  

E-Print Network [OSTI]

A numerical model was constructed to assess the magnitude of organophosphoric acid triester sinks in the Chattahoochee River and to identify concentration patterns downstream of point source discharges. The model was built ...

Haffey, Samuel Fraad, 1973-

2004-01-01T23:59:59.000Z

296

Heats of Combustion of Fatty Acids and Fatty Acid Esters  

Science Journals Connector (OSTI)

...The military uses JP-8, a kerosene type hydrocarbon, to fuel most of its vehicles and ... , no traditional biodiesel meets the requirements for heat of combustion, freezing point, viscosity and oxidative stabi...

Felicia Levine; Ronald V. Kayea III…

2014-02-01T23:59:59.000Z

297

Springer-Verlag Berlin Heidelberg 2003 Bioaccumulation of Phthalate Esters  

E-Print Network [OSTI]

Bioaccumulation Factors BBP Butylbenzyl Phthalate BCFs Bioconcentration Factors BSAF Biota-Sediment Accumulation F

Gobas, Frank

298

Preparation of thio and seleno sugar esters of dimethylantimonous acid  

E-Print Network [OSTI]

arsenic in the periodic table and an extension of the work done with arsenic and phosphorus to include the antimony analogues presents a logical extension of this effort. 12 Sagan, et al. , have prepared eaters of dialkyl- arsinous acids using... in the preparation of the phosphorus analogues of the sugar arsenites. The synthesis of dialkylphosphinous acid eaters of the thio and seleno sugars was effected via the reaction of symmetrical tetraalkyldiphosphines with bis(2, 3, 4, 6 ? tetra-0-acetyl...

Baimbridge, Charles Lynn

2012-06-07T23:59:59.000Z

299

Perfluoro Aryl Boronic Esters as Chemical Shuttle Additives  

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

Barriers * Barriers addressed - D. Abuse Tolerance, Reliability and Ruggedness - A. Cost - E. Life * Technical Target - to employ a redox shuttle molecule in a large format...

300

Quantitative relationships between structure and reactivity of aliphatic esters  

E-Print Network [OSTI]

bnglneering -xpcrtuent station and fron the Robert A. belch IIosearoh Foundation. Introduat ion . ' ethos of ~lysis ~ 0 Quleul-. tion of;1~to Oonst nt, s : iste riel s ~ o ~ I. 'iyters ~ ~ ~ 16 lC 11, . i~::' . ' Crt ~d*iP' 1~&'" :~ppsrstus z&& rl...-tt'rdor Rotc Cansta, ts for . :. oetntas IIIc. Ceoond- rder ". :;te Const tots ". tr Identicr lly Jis tbstt ttttod stars 't 0 IV. Ct, t" an "ct. 'tyl stere V. . )c' o~ cot otcs z2 'tl, . &oto on fde. otic. . t ly Cisubctitttted . . coors . 1. mymificction...

Yager, Billy Joe

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Heavy atom induced phosphorescence of organic materials using mono- and trifunctional organomercury derivatives  

E-Print Network [OSTI]

This dissertation focuses on the phosphorescence of organic chromophores using perfluoro-ortho-phenylene mercury (1) and bis(pentafluorophenyl)mercury (2) as external heavy atom effect inducers. To ascertain the suitability of these luminescent...

Burress, Charlotte Nicole

2009-05-15T23:59:59.000Z

302

Specificity of mono- and disilane decomposition at silicon surface under conditions of epitaxial growth  

Science Journals Connector (OSTI)

Basic kinetic parameters of surface hydrogen desorption and of adsorbed silicon hydrides decomposition has been evaluated by kinetic simulation based on data of the technological experiments on silicon layer g...

L. K. Orlov; N. L. Ivina; T. N. Smyslova

2013-12-01T23:59:59.000Z

303

Enhanced Magneto-Optical Properties of Suspensions of Spindle Type Mono-Dispersed  

E-Print Network [OSTI]

, National Academy of Sciences of Ukraine, Kiev, Ukraine 2 Laboratoire des Colloides, des Verres et des Nano, Institute of Physics, National Academy of Sciences of Ukraine, Pr. Nauki 46, Kiev 03028, Ukraine. Tel.: þ

Reznikov, Yuri

304

ESTIMATION OF OUTLET MASS FLOW FOR A MONO-TUBE CAVITY RECEIVER FOR DIRECT STEAM GENERATION  

E-Print Network [OSTI]

University (ANU). Solar thermal power plants using this technology are intended to be deployed in large generation with large scale parabolic dishes. Simulations of the model show that it is possible to assume pressure and modelled fluid properties. Simulations show that this approach produces good agreement between

305

30TH INTERNATIONAL COSMIC RAY CONFERENCE Telescope Array Aperture: Mono, Stereo and Hybrid  

E-Print Network [OSTI]

-sky background photons are also considered in simulations by us- ing real observational data obtained at the site of Physics, University of Utah, Salt Lake City, UT 84112-0830, USA 4 Department of Physics and Astronomy purpose of TA is to de- termine the energy spectrum of ultra high energy cosmic rays, and a precise

306

MONO-ENERGETIC BEAMS FROM LASER PLASMA INTERACTIONS* C.G.R. Geddes#  

E-Print Network [OSTI]

technique forms the basis of a new class of accelerators, with high gradients and high beam quality]. The best results had therefore been obtained by increasing spot size to increase ZR, requiring ever greater at relativistic intensities, and its propagation controlled over distances of several mm or greater [7

Geddes, Cameron Guy Robinson

307

A theoretical study of fluorographene as substrates for mono-/Bi-layer graphene  

SciTech Connect (OSTI)

Using density functional theory, we discover fluorographene (CF) could help significantly preserve the superb electronic properties of graphene, depending on lattice stacking-order. Compared with h-BN, CF produces a much weaker screening effect for bilayer graphene when external electric field is applied, revealing a huge advantage in gap engineering. The studies suggest that fluorographene could be a promising route towards implementing highly functional substrate or gate dielectric materials for graphene-inspired device applications.

Guo, Zhendong, E-mail: yangxu-isee@zju.edu.cn; Fan, Lei, E-mail: yangxu-isee@zju.edu.cn; Mei, Lingqi, E-mail: yangxu-isee@zju.edu.cn; Xu, Yang, E-mail: yangxu-isee@zju.edu.cn [Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027 (China); Yu, Bin [College of Nanoscale Science and Engineering, State University of New York, Albany 12203 (United States)

2013-12-04T23:59:59.000Z

308

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

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

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

309

The extraction of a mono-energetic neutron beam of maximum intensity from a nuclear reactor  

E-Print Network [OSTI]

all aluminum was taken because Mn has a high capture cross section for thermal neutrons and becomes highly radioactive Mn . Mn has a long half life and gives off 56 FIa 6 SHIELDING PLUG WITH CO I. LIMA TOR TUSE RVNNERS END VIEW POSITION I NS... the horizontal plane. Rather than try to construct a cylindrical boral liner for the tube, it was decided that a rectangular one would be much simpler to construct and would suit the purpose just as well. The rectangular liner was constructed to fit just...

Snow, Edward Clark

1965-01-01T23:59:59.000Z

310

Sorption extraction of metals from mono-and multicomponent solutions using brucite  

Science Journals Connector (OSTI)

It is experimentally shown that the sorption ability of brucite with respect to metals in monosolutions and...

G. I. Pushkaryova

311

Microwave assisted photocatalysis of mono-chloroacetic acid over nanoporous titanium (IV) oxide thin films  

E-Print Network [OSTI]

Microwaves are well known for their heating effects on polar substances and are widely used domestically. The crystallite size of the sample was estimated under 10 nm. Specific surface area was determined from adsorption placed into the glass tube. The solution of MCAA was circulated by pump and reaction temperature

Cirkva, Vladimir

312

Study of Mono or Polycrystalline Solar Cell Process Using Screen Printing Technology  

Science Journals Connector (OSTI)

The objectives of this contract were to develop a cost effective process for solar cell manufacturing. Dry etching technologies and general use of screen printing have...

J. Donon; H. Lauvray; P. Loubly; P. Aubril

1983-01-01T23:59:59.000Z

313

Recent advances to assess mono- and multi-delaminations behaviour of aerospace composites  

Science Journals Connector (OSTI)

During the last 10 years, significant research efforts have been conducted in the aerospace field to develop a predictive fracture mechanics approach to assess the behaviour resulting from localised delamination defects. The main results of this paper will be presented in two parts. The first part addresses:• Development of specific experimental methods to monitor post-buckling delamination behaviour. • Validation of mixed mode propagation criteria and development of experimental protocol to determine material fracture mechanics parameters. • A robust numerical F.E. computation scheme (modified virtual crack extension) to assess energy released rate and mode partition along the delamination tip. Illustrations of the method will be presented through two typical configurations:• Local delamination near the surface in a monolithic composite. • Debonding between skin and honeycomb core of a sandwich structures. The second part will detail extension of the methodology proposed previously to assess failure mechanisms during static compression after impact of a monolithic composite plate. The damage morphology of an impacted composite plate is characterised by multi-delaminations with a typical helix geometry. The ruin mechanism is regarded as an elastic non-linear behaviour in the damaged area due to a progressive local buckling of delaminated plies until a coupled bending-compression failure. Damage evolution is predicted by introduction of delaminations in a 3D F.E. model with non-penetration contact conditions and elastic properties degradation of the damaged plies. Techniques to manage a mesh with multi-delaminations will be detailed.

D. Guédra-Degeorges

2006-01-01T23:59:59.000Z

314

MONO1001 : A source for singly charged ions applied to the production of multicharged fullerene beams  

E-Print Network [OSTI]

(from pure C60 and C70 powder) will be shown and the influence of several source parameters (HF-power, support gas, gas pressure, ...) will be discussed specifying the conditions necessary for an optimum ion

Boyer, Edmond

315

DYNAMIC SIMULATION OF MONO-TUBE CAVITY RECEIVERS FOR DIRECT STEAM GENERATION  

E-Print Network [OSTI]

that includes a 4 cylinder steam engine coupled with a 3 phase generator. This paper describes ongoing research cavity receiver [2] mounted to the 500 m2 dish receiver supports, a modified steam engine coupled transports superheated steam via rotary joints to the ground and then to a 4 cylinder steam engine

316

EXPERIMENTAL VALIDATION OF A DYNAMIC MODEL FOR A MONO-TUBE CAVITY RECEIVER  

E-Print Network [OSTI]

power cycle. The steam engine is a modified 4 cylinder Diesel engine, coupled to an induction generator Burgess, John Pye Research School of Engineering, Australian National University, Canberra, ACT 0200, Australia Keywords: solar-thermal, direct steam generation, moving-boundary formulation, ANU Abstract

317

Functionalized Nanomaterials: Their Use As Contrast Agents In Bio-imaging: Mono-And  

E-Print Network [OSTI]

imaging (THMI) or ion beam analysis (IBA). Perspectives on multimodal theranostic NPs and their potential, Multifunctionality, Theranostic. Contenu Abstract

Paris-Sud XI, Université de

318

Density functional study of CaN mono and bilayer on Cu(001)  

SciTech Connect (OSTI)

Density functional - pseudopotential calculations are performed to provide first-principles insights into magnetic behaviour of bulk CaN and CaN monolayers on Cu(001) in the rock-salt (RS) and zinc-blende (ZB) structures. Our results indicate that both RS- and ZB-CaN exhibit half-metallic ferromagnetism originated from the incomplete 2p shell of the nitrogen ion. In contrast to the bulk CaN, the CaN monolayers on Cu(001) generally favor ZB structure. We argue that the more stable ZB-CaN thin films on Cu(001) are nonmagnetic, because of strong Cu-N bonding at the interface, while the less stable Ca terminated ZB-CaN thin films exhibit half-metallic ferromagnetism. The transition path between the high energy ferromagnetic and the stable nonmagnetic configurations of the ZB-CaN monolayer on Cu(001) are studied by using the nudged elastic band method. We observe a two stages transition and an activation barrier of about 1.18 eV in the minimum energy path of this transition.

Zahedifar, Maedeh; Hashemifar, S. Javad, E-mail: hashemifar@cc.iut.ac.ir; Akbarzadeh, Hadi [Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111 (Iran, Islamic Republic of)] [Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111 (Iran, Islamic Republic of)

2014-01-15T23:59:59.000Z

319

THROUGH-BOND ENERGY TRANSFER CASSETTES FOR MULTIPLEXING & DEVELOPMENT OF METHODS FOR PROTEIN MONO-LABELING  

E-Print Network [OSTI]

.2 Synthesis of photolabile-protected Nile Red derivative 94....... 99 Scheme 4.3 Atachment of compound 94 on PEGA resin or aminopropyl-CPG. 100 Scheme 4.4 Synthesis of TBDPS-protected benzylbromide 99.............. 102 Scheme 4.5 Synthesis of Nile Red... reaction of resorcinol with phthalic anhydride catalyzed by zinc chloride was first reported in 1871 by von Baeyer. 14 Despite their widespread use in biological studies, fluorescein has some remarkable deficiencies. First and foremost, fluorescein...

Ueno, Yuichiro

2010-07-14T23:59:59.000Z

320

Synthesis and characterization of mono- and bis-(tetraalkylmalonamide)uranium(VI) complexes  

Science Journals Connector (OSTI)

The complex [UO2(NO3)2(TMMA)] (TMMA=N,N,N?,N?-tetramethylmalonamide) was structurally characterized by single-crystal X-ray diffraction. The complex consists of two bidentate nitrate ions and one bidentate TMMA ligand coordinated to the UO2 2+ ion. The complex [UO2(THMA)2]2+ (THMA=N,N,N?,N?-tetrahexylmalonamide) was prepared as the BF4? salt; this material tended to form an oil. However, [UO2(TMMA)2](OTf)2 (OTf=triflate) was isolated as a crystalline solid. Comparison of the Fourier transform infrared spectra of these complexes to the spectra of complexes formed in liquid–liquid extraction systems supports the hypothesis that complexes of the type [UO2(NO3)2L] and [UO2L2](NO3)2 (L=diamide extractant) form in the extraction systems.

Gregg J Lumetta; Bruce K McNamara; Brian M Rapko; Richard L Sell; Robin D Rogers; Grant Broker; James E Hutchison

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Solutions of Boltzmann`s Equation for Mono-energetic Neutrons in an Infinite Homogeneous Medium  

DOE R&D Accomplishments [OSTI]

Boltzman's equation is solved for the case of monoenergetic neutrons created by a plane or point source in an infinite medium which has spherically symmetric scattering. The customary solution of the diffusion equation appears to be multiplied by a constant factor which is smaller than 1. In addition to this term the total neutron density contains another term which is important in the neighborhood of the source. It varies as 1/r{sup 2} in the neighborhood of a point source. (auth)

Wigner, E. P.

1943-11-30T23:59:59.000Z

322

Nitrogen Fixation Dynamics of Two Diazotrophic Communities in Mono Lake, California  

Science Journals Connector (OSTI)

...regimens of light and dark. These estimates indicate...U.S. Geological Survey, ms 465, 345 Middlefield...nitrogen for up to 24 h under dark anaerobic conditions by fermentative energy metabolism (L. J. Stahl...ditions or of light/dark periodicity of NA. In...

Ronald S. Oremland

1990-03-01T23:59:59.000Z

323

Solvation studies on anion radicals of alkyl nitrobenzene derivatives in acetonitrile-alkyl alcohol solvent mixtures at 25 p0 sC  

E-Print Network [OSTI]

) =CONST( IMI r K) TN( I ) =TO( I ) ?C(NP IBYZ+IMI ) RD= R 0+T 0 ( I ) 10 RN=RN+TiN ( I ) RDSQ=RD??2 RDCB=RDSQ?RD FO=RN/RD-Y(K) RDEN( 1)=RD RNUM( 1) =RN 00 20 I = 2 1 NPIBY2 IM1=1 ? I RDEN ( I ) =R DEN ( I Ml )- TD ( I Ml ) 20 RNUM( I ) =RNUM...( IMI)-TN( IMI) 00 95 I =1rNI4llBY'2 Fl. ( I ) =( RD?RNUM( I )-RN?RDEN( I ) ) / DO 90 J=NP18Y2 N MINUS= J-NM18Y2 82( lr J)=TD(MINUS)/(RDSQ?C(I ) ). IF(MINUSrLT ~ I ) GO TO 1010 F2(lrJ)= RDEN(I)?F2((rJ) RDSQ?C( I) GO TO 90 10 10 F2( I J) =(RD...

Chu, William Wen-Chen

2012-06-07T23:59:59.000Z

324

Naphthenic acid corrosion and its control  

SciTech Connect (OSTI)

This paper first presents a brief description of naphthenic acid corrosion and the main factors which influence its onset and severity. After a brief discussion of traditional control methods, it proceeds to a discussion of chemical inhibition, which is a relatively new control technique. Chemical inhibitors can be divided into two broad classifications: phosphorus-based and non-phosphorus-based. Three types of phosphorus-based inhibitors have been reported: amine-neutralized phosphate esters, alkaline earth phosphonate phenate sulfide plus trialkyl phosphate, and thiazolines plus di and tri-alkyl phosphates. Non-phosphorus based inhibitors include: thiazolines, organic polysulfides, and sulfonated alkyl phenols. A description of each inhibitor and its effectiveness in the laboratory and field is presented.

Zetlmeisl, M.J. [Petrolite Corp., St. Louis, MO (United States)

1996-08-01T23:59:59.000Z

325

Extended Catalyst Longevity via Supercritical Isobutane Regeneration of a Partially Deactivated USY Alkylation Catalyst  

Science Journals Connector (OSTI)

Box 1625, Idaho Falls, Idaho 83415-2208, and Marathon?Ashland Petroleum, LLC, P.O. ... 2 These processes present serious safety and environmental concerns arising from the need to transport and store the concentrated liquid acids, as well as from the need to dispose of acid?oil sludges produced as byproducts of the processes. ...

David N. Thompson; Daniel M. Ginosar; Kyle C. Burch; David J. Zalewski

2005-05-26T23:59:59.000Z

326

The Structure and Phase Diagram of Chiral Alkyl-Serine Monolayers on Mercury  

SciTech Connect (OSTI)

The structure of liquid-mercury-supported Langmuir films (LFs) of chiral serine-modified fatty acid molecules was studied as a function of length, n = 8-22 carbons, temperature, T = 5-25 C, and surface coverage, A {approx} 40-200 {angstrom}{sup 2} per molecule, for both homochiral and heterochiral compounds. Using surface pressure {pi}-area A isotherms and surface-specific synchrotron X-ray diffraction methods the phase diagram was determined in detail. No lateral order was found for phases comprising surface-parallel molecules, in contrast with unmodified fatty acid LFs on mercury. For phases comprising standing-up molecules, long range lateral order was found for n {>=} 12, but no order for n = 8. The molecules in the ordered phases are extended, and tilt rigidly by {approx}40{sup o} from the surface normal. The homochiral LFs pack in an oblique, single-molecule, unit cell. The heterochiral LFs pack in a body-centered rectangular unit cell, containing two molecules. Unlike unmodified fatty acid LFs, the structure of the standing-up phase does not vary with n, T or A. The interactions underlying these characteristics, and the role of chirality, are discussed.

L Tamam; D Medina; T Menahem; Y Mastai; E Sloutskin; S Yefet; M Deutsch

2011-12-31T23:59:59.000Z

327

E-Print Network 3.0 - alkyl thiolate monolayers Sample Search...  

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

Materials Science ; Chemistry 2 Sonication-Assisted Synthesis of Large, High-Quality Mercury Thiolate Single Crystals Directly from Liquid Mercury Summary: Sonication-Assisted...

328

Alkyl Fumarate?Vinyl Acetate Copolymer as Flow Improver for High Waxy Indian Crude Oils  

Science Journals Connector (OSTI)

Regional Research Laboratory, Jorhat 785006, Assam, India ... The efficacy of these copolymers as flow improvers (FI)/pour point depressants (PPD) was tested on Indian crude oils having similar wax (points is a well-established phenomenon. ...

A. Borthakur; D. Chanda; S. R. Dutta Choudhury; K. V. Rao; B. Subrahmanyam

1996-05-21T23:59:59.000Z

329

On the Existence of ?-Agostic Bonds:? Bonding Analyses of Titanium Alkyl Complexes  

Science Journals Connector (OSTI)

The color convention represents core basins in magenta, and the remaining valence basins are classified depending on the number of connections to core nuclear basins (synaptic order):? red for monosynaptic, green for disynaptic, and cyan for disynaptic hydrogenated basins. ... I.V., S.M. and J.A.D. thank the Centro y Servicios de Informática, Redes y Comunicación (CSIRC), Universidad de Granada, for providing the computing time. ...

Isaac Vidal; Santiago Melchor; Ibón Alkorta; José Elguero; Markku R. Sundberg; José A. Dobado

2006-10-14T23:59:59.000Z

330

for the alkylation reaction. We (23) and others (24) observed similar carbon isotope effects in  

E-Print Network [OSTI]

no wasteful by-products other than water. Whereas chlorinated solvents such as CH2Cl2 and C6H5Cl generally give the best results, nonchlorinated solvents such as toluene and tetrahydrofuran can be used in most- generation "green" catalytic processes. References and Notes 1. G. A. Olah, A. Molnár, Hydrocarbon Chemistry

Jacob, Daniel J.

331

E-Print Network 3.0 - alkylating agent consolidation Sample Search...  

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

University Collection: Chemistry 63 Green Chemistry Dynamic Article Links Cite this: Green Chem., 2011, 13, 2719 Summary: resistant to nucleophilic attack. Hence, a...

332

Using Caenorhabditis elegans to probe toxicity of 1-alkyl-3-methylimidazolium chloride based ionic liquids  

E-Print Network [OSTI]

are gaining attention as new solvents within the green chemistry community; however this attention has quickly attention as new solvents within the green chemistry community.1 This attention is due in part 35487, USA. E-mail: RDRogers@bama.ua.edu; Fax: 205-348-0823; Tel: 205-348-4323 b Center for Green

Caldwell, Guy

333

Reactivity of Bis(amino)cyclopropenylidenes (BACs) and Cyclic(alkyl)(amino)carbenes (CAACs):  

E-Print Network [OSTI]

D. C. , 1996. Nelson, W. M. Green Solvents for Chemistry:solvents such as water for the synthesis of organic compounds serves as a cornerstone of green

Kuchenbeiser, Glenn Richard

2009-01-01T23:59:59.000Z

334

E-Print Network 3.0 - aliphatic friedel-crafts alkylations Sample...  

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

Biology and Medicine ; Environmental Sciences and Ecology 28 A process for the rapid removal of dialkylamino-substituents from aromatic rings. Application to the expedient...

335

E-Print Network 3.0 - alkyl tert-butyl ether Sample Search Results  

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

> >> 1 7198 J. Org. Chem. 1995,60, 7198-7208 Gas Phase Decomposition of Conjugate Acid Ions of Simple Summary: .S.Patent 5,091,590,1992. 0 1995American Chemical Society...

336

Alkyl nitrate (C 1 -C 3 ) depth profiles in the tropical Pacific Ocean  

E-Print Network [OSTI]

concentrations with a [ iPr]/[Et] ratio of 0.1±0.0. Noat all depths with an [iPr]/[Et] ratio of 0.2 ± 0.0. Thiswith ethyl nitrate with an [iPr]/[Et] ratio of 0.2 ± 0.0.

Dahl, E. E; Yvon-Lewis, S. A; Saltzman, E. S

2007-01-01T23:59:59.000Z

337

Direct Evidence for a Marine Source of C1 and C2 Alkyl Nitrates  

Science Journals Connector (OSTI)

...samples, were pumped into 3-liter...under running seawater. Air samples...linearity, and storage artefacts were...out, in which seawater samples were...samples, were pumped into 3-liter...under running seawater. Air samples...linearity, and storage artefacts were...

Adele L. Chuck; Suzanne M. Turner; Peter S. Liss

2002-08-16T23:59:59.000Z

338

E-Print Network 3.0 - aliphatic alkyl quaternaries Sample Search...  

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

to almost... (e.g. Ar-Cl, tertiary amine, quaternary amine) NuH R'R"NH 11CCarbon Monoxide - In ring closure... is a nucleophilic subsitition of bisulfite by 11Ccyanide ion...

339

Mechanism of H-ras Oncogene Activation in Mouse Squamous Carcinoma Induced by an Alkylating Agent  

Science Journals Connector (OSTI)

...tumors, DMBA activated H-ras in at least 75...carcinoma model (14), H-ras was activated in...contains an ethylcarbonyl bridge between the N-l and N...the l^V*-etheno- bridge-adenine adduct formed...the middle adenine of the H-ras 61st codon. ACKNOWLEDGMENTS...

Anne E. Hochwalt; Jerome J. Solomon; and Seymour J. Garte

1988-02-01T23:59:59.000Z

340

Influence of the Alkyl Surfactant Tail on the Adhesion between Emulsion Drops  

Science Journals Connector (OSTI)

P. Poulin ,* W. Essafi , and J. Bibette ... (2)?Leal Calderon, F.; Stora, T.; Mondani Monval, O.; Poulin, P.; Bibette, J. Phys. ... Leal Calderon, F.; Stora, T.; Mondain Monval, O.; Poulin, P.; Bibette, J. ...

P. Poulin; W. Essafi; J. Bibette

1999-06-09T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Growth and stability of oxidation resistant Si nanocrystals formed by decomposition of alkyl silanes  

SciTech Connect (OSTI)

The synthesis and characterization of 1-10 nm Si nanocrystals highly resistant to oxidation is described. The nanocrystals were prepared by thermal decomposition of tetramethylsilane at 680 C, or in a gold- induced catalytic process at lower temperatures down to 400-450 C using trioctylamine as an initial solvent. Transmission electron microscopic analysis of samples obtained in the presence of gold show that the nanocrystals form via solid-phase epitaxial attachment of Si to the gold crystal lattice. The results of computational modeling performed using first principles density functional theory (DFT) calculations predict that the enhanced stability of nanocrystals to oxidation is due to the presence of N or N-containing groups on the surface of nanocrystals.

Zaitseva, N; Hamel, S; Dai, Z R; Saw, C; Williamson, A J; Galli, G

2007-01-12T23:59:59.000Z

342

Thermal Annealing: A Facile Way of Conferring Responsivity to Inert Alkyl-Chain-Passivated Nanoparticle Arrays  

Science Journals Connector (OSTI)

Together with the cost-effectiveness of such NP arrays, this study has potential in the development of economical sensors for medical diagnostics, food safety screening, and environmental pollution monitoring. ... To verify the DDT stretching-based response mechanism, SAXS measurement of the Au NP array exposed to various organic vapors was performed, as shown in Figure 4B. As the vapor changed from air to chloroform vapor, the diffraction peak value of the array gradually decreased, directly proving the change of interparticle spacing in the presence of different types of vapor. ...

Jun Zhou; Guoshuai Song; Yan Li; Youxin Song; Bin Chen; Xuemin Zhang; Tieqiang Wang; Yu Fu; Fei Li

2014-10-14T23:59:59.000Z

343

Structure and Reactivity of Alkyl Ethers Adsorbed on CeO2(111) Model Catalysts  

SciTech Connect (OSTI)

The effect of surface hydroxyls on the adsorption of ether on ceria was explored. Adsorption of dimethyl ether (DME) and diethyl ether (DEE) on oxidized and reduced CeO{sub 2}(111) films was studied and compared with Ru(0001) using RAIRS and sXPS within a UHV environment. On Ru(0001) the ethers adsorb weakly with the molecular plane close to parallel to the surface plane. On the ceria films, the adsorption of the ethers was stronger than on the metal surface, presumably due to stronger interaction of the ether oxygen lone pair electrons with a cerium cation. This interaction causes the ethers to tilt away from the surface plane compared to the Ru(0001) surface. No pronounced differences were found between oxidized (CeO{sub 2}) and reduced (CeOx) films. The adsorption of the ethers was found to be perturbed by the presence of OH groups on hydroxylated CeOx. In the case of DEE, the geometry of adsorption resembles that found on Ru, and in the case of dimethyl ether DME is in between that one found on clean CeOx and the metal surface. Decomposition of the DEE was observed on the OH/CeOx surface following high DEE exposure at 300 K and higher temperatures. Ethoxides and acetates were identified as adsorbed species on the surface by means of RAIRS and ethoxides and formates by s-XPS. No decomposition of dimethyl ether was observed on the OH/CeOx at these higher temperatures, implying that the dissociation of the C-O bond from ethers requires the presence of {beta}-hydrogen.

F Calaza; T Chen; D Mullins; S Overbury

2011-12-31T23:59:59.000Z

344

Structure and Reactivity of Alkyl Ethers Adsorbed on CeO(2)(111) Model Catalysts  

SciTech Connect (OSTI)

The effect of surface hydroxyls on the adsorption of ether on ceria was explored. Adsorption of dimethyl ether (DME) and diethyl ether (DEE) on oxidized and reduced CeO{sub 2}(111) films was studied and compared with Ru(0001) using RAIRS and sXPS within a UHV environment. On Ru(0001) the ethers adsorb weakly with the molecular plane close to parallel to the surface plane. On the ceria films, the adsorption of the ethers was stronger than on the metal surface, presumably due to stronger interaction of the ether oxygen lone pair electrons with a cerium cation. This interaction causes the ethers to tilt away from the surface plane compared to the Ru(0001) surface. No pronounced differences were found between oxidized (CeO{sub 2}) and reduced (CeOx) films. The adsorption of the ethers was found to be perturbed by the presence of OH groups on hydroxylated CeOx. In the case of DEE, the geometry of adsorption resembles that found on Ru, and in the case of dimethyl ether DME is in between that one found on clean CeOx and the metal surface. Decomposition of the DEE was observed on the OH/CeOx surface following high DEE exposure at 300 K and higher temperatures. Ethoxides and acetates were identified as adsorbed species on the surface by means of RAIRS and ethoxides and formates by s-XPS. No decomposition of dimethyl ether was observed on the OH/CeOx at these higher temperatures, implying that the dissociation of the C-O bond from ethers requires the presence of {beta}-hydrogen.

Calaza, Florencia C [ORNL; Chen, Tsung-Liang [ORNL; Mullins, David R [ORNL; Overbury, Steven {Steve} H [ORNL

2011-01-01T23:59:59.000Z

345

Carcinogenicity of Phenols, Alkylating Agents, Urethan, and a Cigarette-Smoke Fraction in Nicotiana Seedlings  

Science Journals Connector (OSTI)

...seedlings 20 days later. The car cinogenic activity of...for 48 hr in distilled water. The seeds were then...seeds were washed with water, sown in Petri dishes...examined under a low-power micro scope, scored for...were seeds treated with water alone during the comparable...

Roger A. Andersen

1973-10-01T23:59:59.000Z

346

Palladium-Catalyzed Asymmetric Alkylation in the Synthesis of Cyclopentanoid and Cycloheptanoid Core Structures Bearing All-  

E-Print Network [OSTI]

, iodoethane, acrylonitrile, methyl vinyl ketone, and acrolein were distilled prior to use. Purified water

Stoltz, Brian M.

347

Variations of Alkyl Groups in 4-(4-Dialkylaminostyryl)quinolines1,2  

Science Journals Connector (OSTI)

Carl Tabb Bahner , Lydia Moore Rives , Emma Brown Senter , William Longmire , Harold Kinder , Dorothy Bettis Bales , Fred Hannan , Bobby Pettyjohn , William K. Easley , Lovely Free , Hugh Free ...

Carl Tabb Bahner; Lydia Moore Rives; Emma Brown Senter; William Longmire; Harold Kinder; Dorothy Bettis Bales; Fred Hannan; Bobby Pettyjohn; William K. Easley; Lovely Free; Hugh Free

1962-01-01T23:59:59.000Z

348

E-Print Network 3.0 - alkyl hydroxyperoxide reductase Sample...  

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

Figure 1. Root lengths of S. pinnata and S. albescens grown on vertically placed agar plates after 30 days of growth from germination. Plants treated without () Se (open...

349

Effect of Alkyl Derivatization on Several Properties of N-Halamine Antimicrobial Siloxane Coatings  

Science Journals Connector (OSTI)

These observations led to the conclusion that the 5,5-dimethyl derivative would be recommended for use, since it is the least expensive alternative. ... Gram-negative Escherichia coli is generally more resistant to chlorine disinfection than other organisms of vegetative bacteria, so it was selected as the test organism for determining the effectiveness of disinfection by the chlorinated hydantoinyl siloxane derivatives. ... Past work in these laboratories has demonstrated that changes of 0.03% in chlorine loading do not materially affect the performance of a given N-halamine biocide, so any differences observed among the derivatives in this work should not be attributed to slightly different chlorine loadings on the swatches. ...

Hasan B. Kocer; Akin Akdag; Xuehong Ren; R. M. Broughton; S. D. Worley; T. S. Huang

2008-09-13T23:59:59.000Z

350

E-Print Network 3.0 - alkyl dimethyl benzyl Sample Search Results  

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

acceptable, but models show that it Summary: -Alder reaction of dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylateand a subsequent in- tramolecular Diels... : the inverse electron...

351

E-Print Network 3.0 - alkyl c12-c16 dimethyl Sample Search Results  

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

regions with dimethyl sulfate... acids by dimethyl sulfate Peattie, D. A. & Gilbert, W. (1980) ... Source: Kirkegaard, Karla - Department of Microbiology and...

352

E-Print Network 3.0 - alkyl aryl ketones Sample Search Results  

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

of Chemistry, Boston University Collection: Chemistry 78 Synthesis and Reactivity of (DMSC)Ti(2-OCAr2)L2 Complexes (DMSC ) Dimethylsilyl-Bridged Summary: well-characterized...

353

Alkyl nitrate (C 1 -C 3 ) depth profiles in the tropical Pacific Ocean  

E-Print Network [OSTI]

Experiment (WOCE), vol. 2, Pacific Ocean DRAFT, edited by M.over the equatorial Pacific Ocean during SAGA 3, J. Geophys.the troposphere over the Pacific Ocean during PEM- Tropics A

Dahl, E. E; Yvon-Lewis, S. A; Saltzman, E. S

2007-01-01T23:59:59.000Z

354

Removal patterns of some alkyl phenyl ketones in a heterogeneous bacterial system  

E-Print Network [OSTI]

never lrave been wri t ten, I can only say thank you. TABLE OF CONTENTS pacCe ABSTRACT ACKNONLEDGEMENTS iLIST OF TABLES LIST OF FIGURES SECTION I Introduction and Literature Review SECTION II Apparatus and Materials Reactor Gas Chromatograph... Removal by Air Stripping Organic Component Analysis Suspended Solids pH of Reactor Fluids Diffused Air Flow Rate Temperature of Reactor Fluids SECTION IV Results Test A Test B Test C Test D Test E Test F Test G Test H Test. I Test R...

Salitros, James Joseph

2012-06-07T23:59:59.000Z

355

E-Print Network 3.0 - asymmetric friedel-crafts alkylation Sample...  

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

to haouamine B also relies on an intramolecular ... Source: Trauner, Dirk - Department Chemie, Ludwig Maximilians Universitt Mnchen Collection: Chemistry 3 Organocatalytic...

356

Alkylation of Intracellular and Extracellular DNA by Dimethylnitrosamine following Activation by Isolated Rat Hepatocytes  

Science Journals Connector (OSTI)

...of the spectrum of products produced in DNA by reaction with W-methyl-A/-nitrosourea and the activation...by dimethylnitrosamine also occurs by an SN1 reaction or by the bimolecular SN2 reaction sug gested by Andreozzi et al. (1) and Park...

Diane R. Umbenhauer and Anthony E. Pegg

1981-09-01T23:59:59.000Z

357

E-Print Network 3.0 - anionic alkyl diglycoldiamides Sample Search...  

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

Institute of Technology Collection: Chemistry 6 Chem 350 Jasperse Ch. 6 Summary of Reaction Types, Ch. 4-6, Test 2 1. Radical Halogenation (Ch. 4) Summary: . Recognition: A....

358

E-Print Network 3.0 - alkyl halide systems Sample Search Results  

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

Institute of Technology (MIT) Collection: Chemistry 29 Chem 350 Jasperse Ch. 6 Summary of Reaction Types, Ch. 4-6, Test 2 1. Radical Halogenation (Ch. 4) Summary: . Recognition: A....

359

Impairment of APE1 Function Enhances Cellular Sensitivity to Clinically Relevant Alkylators and Antimetabolites  

Science Journals Connector (OSTI)

...generally divided into two types based on their reaction mechanism: SN1 or SN2 (6, 7). SN2 type, because they have direct biomolecular reaction with DNA, exhibit high nucleophilic selectivity...

Daniel R. McNeill; Wing Lam; Theodore L. DeWeese; Yung-Chi Cheng; and David M. Wilson III

2009-06-01T23:59:59.000Z

360

Molecular simulation study of nanoscale friction between alkyl monolayers on Si,,111... immersed in solvents  

E-Print Network [OSTI]

of friction at different interfaces in various solvents is very important to micro- or nanoelectro- mechanical.1063/1.1578055 I. INTRODUCTION Micro- or nanoelectromechanical systems MEMS/ NEMS are the integration/hydrophobic hydrophilic/hydrophilic hydro- philic/hydrophobic interfaces in water.8,13 Thus, it is ex- pected

Zhang, Luzheng

Note: This page contains sample records for the topic "mono alkyl ester" 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

Borrowing Hydrogen in Water and Ionic Liquids: Iridium-Catalyzed Alkylation of Amines with Alcohols  

Science Journals Connector (OSTI)

Ourida Saidi †, A. John Blacker ‡, Gareth W. Lamb †, Stephen P. Marsden ‡, James E. Taylor † and Jonathan M. J. Williams *† ... Blacker, A. J.; Farah, M. M.; Hall, M. I.; Marsden, S. P.; Saidi, O.; Williams, J. M. J. Org. ... Blacker, A. John; Farah, Mohamed M.; Hall, Michael I.; Marsden, Stephen P.; Saidi, Ourida; Williams, Jonathan M. J. ...

Ourida Saidi; A. John Blacker; Gareth W. Lamb; Stephen P. Marsden; James E. Taylor; Jonathan M. J. Williams

2010-03-11T23:59:59.000Z

362

Gas Chromatographic Analysis of Low Molecular Weight Alkyl Thiols and Sulfides Separated on Open Tubular Columns  

Science Journals Connector (OSTI)

......O.Z /98 Figure 1. Open Tubular Column Separation of Thiols and Sulfides. 1. Adams, D. F., and Koppe, R. H., Tappi 42, No. 7: 601 (July 1959). 2. Levey, E. J., and Stahl, W. A., Anal Chem. 33, No. 6: 707 (1961). 3. Fredericks......

Robert W. Freedman

1968-09-01T23:59:59.000Z

363

FORMATION OF CARBON-CARBON BONDS IN THE PHOTOCHEMICAL ALKYLATION OF POLYCYCLIC AROMATIC  

E-Print Network [OSTI]

HYDROCARBONS TANIA B. MAHAJAN1, JAMIE E. ELSILA1, DAVID W. DEAMER2 and RICHARD N. ZARE1 1 Department July 2002) Abstract. The reaction of polycyclic aromatic hydrocarbons (PAHs) with alkanes was examined films in contact with simulated ocean water, and in matrices simulating ISM conditions. Photoalkylation

Zare, Richard N.

364

Novel Alkylsulfatases Required for Biodegradation of the Branched Primary Alkyl Sulfate Surfactant 2-Butyloctyl Sulfate  

Science Journals Connector (OSTI)

...sulfate as a carbon and energy source for growth, but...components of a variety of household and industrial detergent...the European Union, and Japan (12). Of this part...sulfate as a carbon and energy source for growth, but...

Andrew J. Ellis; Stephen G. Hales; Naheed G. A. Ur-Rehman; Graham F. White

2002-01-01T23:59:59.000Z

365

E-Print Network 3.0 - ammonium compounds n-alkyl Sample Search...  

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

which are incompatible with other compounds. Summary: compounds, fulminic acid Sodium carbon tetrachloride, carbon dioxide, water Sodium nitrite ammonium nitrate... chemicals...

366

Theoretical kinetic study of thermal unimolecular decomposition of cyclic alkyl radicals  

E-Print Network [OSTI]

-lès-Nancy, France e-mail: Rene.Fournet@ensic.inpl-nancy.fr Received date Title running head: Ring Opening kinetic studies have investigated the oxidation of straight or branched- chain alkanes. In comparison fuels (up to 3% in gasoline and 35% in diesel fuel) 2 . Under oxidative conditions, the reaction

Paris-Sud XI, Université de

367

E-Print Network 3.0 - alpha-alpha-alkyl derivatives mecanismo...  

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

Surez - Cartography and Graphic Engineering Department, University of Las Palmas de Gran Canaria Collection: Computer Technologies and Information Sciences 23 Para la...

368

Repair of DNA Alkylation Induced in L1210 Leukemia and Murine Bone Marrow by Three Chloroethylnitrosoureas  

Science Journals Connector (OSTI)

...cross-links proceeds much more slowly than does repair of monoadducts; we observed that...cross-links. Further, removal of label does not ensure that the full process of excision...Sartorelli and D. G. Johns (eds.). Handbook of Experimental Pharma cology, Vol. 38...

James D. Ahlgren; Dianna C. Green; Kenneth D. Tew; and Philip S. Schein

1982-07-01T23:59:59.000Z

369

Definition: Biodiesel | Open Energy Information  

Open Energy Info (EERE)

Biodiesel Biodiesel A renewable fuel that can be produced from a wide range of vegetable oils or animal fats. May be used either as a replacement for or as a component of diesel fuel. Additional technical definition: ASTM D6751 - 11b.[1][2] View on Wikipedia Wikipedia Definition Biodiesel refers to a vegetable oil- or animal fat-based diesel fuel consisting of long-chain alkyl esters. Biodiesel is typically made by chemically reacting lipids (e.g. , vegetable oil, animal fat) with an alcohol producing fatty acid esters. Biodiesel is meant to be used in standard diesel engines and is thus distinct from the vegetable and waste oils used to fuel converted diesel engines. Biodiesel can be used alone, or blended with petrodiesel. Biodiesel can also be used as a low carbon

370

Production of algae-based biodiesel using the continuous catalytic Mcgyan® process  

Science Journals Connector (OSTI)

This study demonstrates the production of algal biodiesel from Dunaliella tertiolecta, Nannochloropsis oculata, wild freshwater microalgae, and macroalgae lipids using a highly efficient continuous catalytic process. The heterogeneous catalytic process uses supercritical methanol and porous titania microspheres in a fixed bed reactor to catalyze the simultaneous transesterification and esterification of triacylglycerides and free fatty acids, respectively, to fatty acid methyl esters (biodiesel). Triacylglycerides and free fatty acids were converted to alkyl esters with up to 85% efficiency as measured by 300 MHz 1H NMR spectroscopy. The lipid composition of the different algae was studied gravimetrically and by gas chromatography. The analysis showed that even though total lipids comprised upwards of 19% of algal dry weight the saponifiable lipids, and resulting biodiesel, comprised only 1% of dry weight. Thus highlighting the need to determine the triacylglyceride and free fatty acid content when considering microalgae for biodiesel production.

Brian J. Krohn; Clayton V. McNeff; Bingwen Yan; Daniel Nowlan

2011-01-01T23:59:59.000Z

371

Reactions of Methylene Hydrogen  

E-Print Network [OSTI]

. 132 Claisen. 17. reaching with either one or two moles of the ester. The reaction may he considered to go on as follows: COOCeHs COOCeHs r • / 1 CHeCHfO + He| 0 - CHsCH = C \\ I COOCaHs COOCeHs aoetal malonic ester. Then a seoond molectte...COH : CHXCOOCBHB CHaCOH : CXCOOC«Hs + Ua * CHeC : CZCOOCaHs I Ola CHaC : CXCOOCeHa + YI m CHa C • CXYCOOCaHa I I I Ola Ola - CHsCOCXYCOOCeHs The sodium salt exists in the enol form. The alkyl iodide adds direotly at the double bond and then splitts off a...

Griffin, E. L.

1912-05-15T23:59:59.000Z

372

Metal Carbonyl-Hydrosilane Reactions and Hydrosilation Catalysis  

SciTech Connect (OSTI)

Manganese carbonyl complexes serve as hydrosilation precatalysts for selectively transforming a carbonyl group into a siloxy methylene or a fully reduced methylene group. Substrates of interest include (1) aldehydes, ketones, carboxylic acids, silyl esters, and esters, and (2) their organometallic acyl counterparts. Three relevant catalytic reactions are shown. Two types of manganese precatalysts have been reported: (a) alkyl and acyl complexes (L)(C0){sub 4}MnR [L = CO, PPh{sub 3}; R = COCH{sub 3}, COPh, CH{sub 3}] and (b) halides (CO){sub 5}MnX and [(CO){sub 4}MnX]{sub 2} (X = Br, I). The former promote hydrosilation and deoxygenation catalysis; the latter promote dehydrogenative silation of alcohols and carboxylic acids as well as hydrosilation and deoxygenation of some metallocarboxylic acid derivatives. In every case studied, these Mn precatalysts are far more reactive or selective than traditional Rh(I) precatalysts.

Cutler, A. R.

2001-04-14T23:59:59.000Z

373

Copolymers useful as additives for lowering the cloud point of middle hydrocarbon distillates, and compositions of middle hydrocarbon distillates comprising them  

SciTech Connect (OSTI)

Products useful as additives for lowering the cloud point of middle distillates have a molecular weight from 1,000 to 50,000, and are obtained by reacting a compound of the formula R-Z((CH/sub 2/) /SUB n/ NH) /SUB m/ H or HO-CH/sub 2/-R'-NH/sub 2/ where R is a monovalent saturated aliphatic radical of 1-30 carbon atoms, Z is -NH- or oxygen, n is 2 to 4, m is zero or 1 to 4 and R' is a saturated divalent aliphatic radical of 1-18 carbon atoms, with a copolymer comprising recurrent units (A) from an alkyl ester of an unsaturated monocarboxylic acid and/or a vinyl ester of a saturated monocarboxylic acid, recurrent units (B) from diisobutylene and recurrent units (C) from an unsaturated a,b-dicarboxylic compound.

Durand, J. P.; Damin, B.; Dawans, F.; Leger, R.

1985-03-05T23:59:59.000Z

374

Reversed-Phase Chromatography of Novel Biologically Effective Aminoacridine-N-glycosides by OPLC  

Science Journals Connector (OSTI)

......proflavine mono- and dilactoside (PMLA, PDLA), mono- and diglucoside (PMG, PDG), digalactoside (PDGA), and diriboside (PDRI); acriflavine mono- and dilactoside (AMLA, ADLA), mono- and diglucoside (AMG, ADG), mono- and digalactoside (AMGA......

K. Kovács-Hadady; A. Kovács

1989-05-01T23:59:59.000Z

375

Coupled Dynamic Analysis of Large-Scale Mono-Column Offshore Wind Turbine with a Single Tether Hinged in Seabed  

E-Print Network [OSTI]

The increased interest in the offshore wind resource in both industry and academic and the extension of the wind field where offshore wind turbine can be deployed has stimulated quite a number of offshore wind turbines concepts. This thesis presents...

Chen, Jieyan

2012-10-19T23:59:59.000Z

376

A Mono-2-Ethylhexyl Phthalate Hydrolase from a Gordonia sp. That Is Able To Dissimilate Di-2-Ethylhexyl Phthalate  

Science Journals Connector (OSTI)

...acclimated activated sludge (31). After this...activity was determined by bubble formation in a 3% hydrogen...river water and activated sludge. Appl. Environ. Microbiol...metabolites in blood plasma by gas chromatography-mass...Weight-of-evidence versus strength-of-evidence in toxicologic...

Tuguhiro Nishioka; Makoto Iwata; Takuya Imaoka; Maiko Mutoh; Yoshihiro Egashira; Takashi Nishiyama; Takashi Shin; Takao Fujii

2006-04-01T23:59:59.000Z

377

Atmospheric chemistry of CF{sub 3}C(O)OCH{sub 2}CF{sub 3}: UV spectra and kinetic data for CF{sub 3}C(O)OCH({sm_bullet})CF{sub 3} and CF{sub 3}C(O)OCH(OO{sm_bullet})CF{sub 3} radicals, and atmospheric fate of CF{sub 3}C(O)OCH(O{sm_bullet})CF{sub 3} radicals  

SciTech Connect (OSTI)

Recognition of the adverse effect of chlorofluorocarbon (CFC) release into the atmosphere has led to an international effort to replace CFCs with environmentally acceptable alternatives. Hydrofluoroethers (HFEs) are fluids designed to replace CFCs in applications such as the cleaning of electronic equipment, heat transfer agents in refrigeration systems, and carrier fluids for lubricant deposition. HFEs are volatile compounds and will be released into the atmosphere during its use. In the atmosphere, photochemical oxidation of HFEs will lead to the formation of fluorinated esters and fluorinated formates. The atmospheric fate of these products is unknown at the present. To improve their understanding of the atmospheric chemistry of esters the authors have studied the atmospheric chemistry of 2,2,2-trifluoroethyltrifluoroacetate CF{sub 3}C(O)OCH{sub 2}CF{sub 3} (bp = 55.0 C). This compound provides insight into the behavior of alkyl, alkyl peroxy, and alkoxy radicals formed {alpha} to the ester functionality. The atmospheric fate of CF{sub 3}C(O)OCH(O{sup {sm_bullet}})CF{sub 3} radicals was investigated in a FTIR smog chamber. Three loss processes for the CF{sub 3}C(O)OCH(O{sup {sm_bullet}})CF{sub 3} radicals were identified at 296 K and 700 Torr total pressure, reaction with O{sub 2} to form CF{sub 3}C(O)OC(O)CF{sub 3}, {alpha}-rearrangement to form CF{sub 3}C(O){sm_bullet} radicals and CF{sub 3}C(O)OH, and decomposition via a mechanism which is unclear. In 760 Torr of air at 296 K, 65% of the CF{sub 3}C(O)OCH(O{sm_bullet})CF{sub 3} radicals react with oxygen, 18% undergo {alpha}-rearrangement, while the fate of the remaining 17% is unclear.

Stein, T.N.N.; Christensen, L.K.; Platz, J.; Sehested, J.; Nielsen, O.J. [Risoe National Lab., Roskilde (Denmark). Plant Biology and Biogeochemistry Dept.] [Risoe National Lab., Roskilde (Denmark). Plant Biology and Biogeochemistry Dept.; Wallington, T.J. [Ford Motor Co., Dearborn, MI (United States). Ford Research Lab.] [Ford Motor Co., Dearborn, MI (United States). Ford Research Lab.

1999-07-22T23:59:59.000Z

378

Extensive esterification of adrenal C19-delta 5-sex steroids to long-chain fatty acids in the ZR-75-1 human breast cancer cell line  

SciTech Connect (OSTI)

Estrogen-sensitive human breast cancer cells (ZR-75-1) were incubated with the 3H-labeled adrenal C19-delta 5-steroids dehydroepiandrosterone (DHEA) and its fully estrogenic derivative, androst-5-ene-3 beta,17 beta-diol (delta 5-diol) for various time intervals. When fractionated by solvent partition, Sephadex LH-20 column chromatography and silica gel TLC, the labeled cell components were largely present (40-75%) in three highly nonpolar, lipoidal fractions. Mild alkaline hydrolysis of these lipoidal derivatives yielded either free 3H-labeled DHEA or delta 5-diol. The three lipoidal fractions cochromatographed with the synthetic DHEA 3 beta-esters, delta 5-diol 3 beta (or 17 beta)-monoesters and delta 5-diol 3 beta,17 beta-diesters of long-chain fatty acids. DHEA and delta 5-diol were mainly esterified to saturated and mono-unsaturated fatty acids. For delta 5-diol, the preferred site of esterification of the fatty acids is the 3 beta-position while some esterification also takes place at the 17 beta-position. Time course studies show that ZR-75-1 cells accumulate delta 5-diol mostly (greater than 95%) as fatty acid mono- and diesters while DHEA is converted to delta 5-diol essentially as the esterified form. Furthermore, while free C19-delta 5-steroids rapidly diffuse out of the cells after removal of the precursor (3H)delta 5-diol, the fatty acid ester derivatives are progressively hydrolyzed, and DHEA and delta 5-diol thus formed are then sulfurylated prior to their release into the culture medium. The latter process however is rate-limited, since new steady-state levels of free steroids and fatty acid esters are rapidly reached and maintained for extended periods of time after removal of precursor, thus maintaining minimal concentrations of intracellular steroids.

Poulin, R.; Poirier, D.; Merand, Y.; Theriault, C.; Belanger, A.; Labrie, F.

1989-06-05T23:59:59.000Z

379

Unconventional Air-Stable Interdigitated Bilayer Formed by 2,3-Disubstituted Fatty Acid Methyl Esters  

Science Journals Connector (OSTI)

The diffusion-limited aggregation (DLA) model is applied to describe the formation of the fractal structures of the bilayer as observed in the second plateau. ... For the fluorescence microscopy investigations, the film balance (144 cm2, Riegler & Kirstein) was mounted onto the stage of the Olympus microscope BX-FLA (Hamburg, Germany) equipped with a mercury lamp (USH-102D 100 W, power supply unit BH2-RFL-T3), an objective (LMPLFL 50×), and a CCD camera with a camera controller (Hamamatsu C4742-95, Hamamatsu, Japan). ...

Xiaodong Chen; Susanne Wiehle; Markus Weygand; Gerald Brezesinski; Ute Klenz; Hans-Joachim Galla; Harald Fuchs; Günter Haufe; Lifeng Chi

2005-10-05T23:59:59.000Z

380

E-Print Network 3.0 - anhydroecgonine methyl ester Sample Search...  

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

Idaho Collection: Environmental Sciences and Ecology 9 A Novel Post-translational Modification of Yeast Elongation Factor 1A Summary: that is released as volatile methyl groups...

Note: This page contains sample records for the topic "mono alkyl ester" 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

Effect of Unburned Methyl Esters on the NOx Conversion of Fe-Zeolite SCR Catalyst  

SciTech Connect (OSTI)

Engine and flow reactor experiments were conducted to determine the impact of biodiesel relative to ultra-low-sulfur diesel (ULSD) on inhibition of the selective catalytic reduction (SCR) reaction over an Fe-zeolite catalyst. Fe-zeolite SCR catalysts have the ability to adsorb and store unburned hydrocarbons (HC) at temperatures below 300 C. These stored HCs inhibit or block NO{sub x}-ammonia reaction sites at low temperatures. Although biodiesel is not a hydrocarbon, similar effects are anticipated for unburned biodiesel and its organic combustion products. Flow reactor experiments indicate that in the absence of exposure to HC or B100, NO{sub x} conversion begins at between 100 and 200 C. When exposure to unburned fuel occurs at higher temperatures (250-400 C), the catalyst is able to adsorb a greater mass of biodiesel than of ULSD. Experiments show that when the catalyst is masked with ULSD, NO{sub x} conversion is inhibited until it is heated to 400 C. However, when masked with biodiesel, NO{sub x} conversion is observed to begin at temperatures as low as 200 C. Engine test results also show low-temperature recovery from HC storage. Engine tests indicate that, overall, the SCR system has a faster recovery from HC masking with biodiesel. This is at least partially due to a reduction in exhaust HCs, and thus total HC exposure with biodiesel.

Williams, A.; Ratcliff, M.; Pedersen, D.; McCormick, R.; Cavataio, G.; Ura, J.

2010-03-01T23:59:59.000Z

382

Targeted delivery to PEPT1-overexpressing cells: Acidic, basic, and secondary floxuridine amino acid ester prodrugs  

Science Journals Connector (OSTI)

...were obtained on a 300 MHz Bruker DPX-300 NMR...Cells were grown in an atmosphere of 5 CO2 and 90 relative...Stability in Human Plasma. The stability of the prodrugs in human plasma was determined using...procedure below. Undiluted plasma (230 muL) was added...

Christopher P. Landowski; Balvinder S. Vig; Xueqin Song; and Gordon L. Amidon

2005-04-01T23:59:59.000Z

383

High Speed MQL Drilling of Titanium Alloy using Synthetic Ester and Palm Oil  

Science Journals Connector (OSTI)

Minimum Quantity Lubrication (MQL) machining involves the application of a small quantity of lubricant being dispensed to the tool-workpiece interface. This paper describes the results of applying different MQL l...

E. A. Rahim; H. Sasahara

2010-01-01T23:59:59.000Z

384

Advanced Biocatalytic Processing of Heterogeneous Lignocellulosic Feedstocks to a Platform Chemical Intermediate (Lactic acid Ester)  

SciTech Connect (OSTI)

The development of commercial boi-based processes and products derived from agricultural waste biomass has the potential for significant impact on the economy and security of our nation. Adding value, rather than disposing of the waste of agriculture, can solve an environmental problem and reduce our dependence on foreign sources of fossil fuel for production of chemicals, materials and fuels.

Dr. Sharon Shoemaker

2004-09-03T23:59:59.000Z

385

Cultured human astrocytes secrete large cholesteryl ester- andtriglyceride-rich lipoproteins along with endothelial lipase  

SciTech Connect (OSTI)

We cultured normal human astrocytes and characterized their secreted lipoproteins. Human astrocytes secreted lipoproteins in the size range of plasma VLDL (Peak 1), LDL (Peak 2), HDL (Peak 3) and a smaller peak (Peak 4), as determined by gel filtration chromatography, nondenaturing gradient gel electrophoresis and transmission electron microscopy. Cholesterol enrichment of astrocytes led to a particular increase in Peak 1. Almost all Peak 2, 3 and 4 cholesterol and most Peak 1 cholesterol was esterified (unlike mouse astrocyte lipoproteins, which exhibited similar peaks but where cholesterol was predominantly non-esterified). Triglycerides were present at about 2/3 the level of cholesterol. LCAT was detected along with two of its activators, apolipoprotein (apo) A-IV and apoC-I. ApoA-I and apoA-II mRNA and protein were absent. ApoJ was present equally in all peaks but apoE was present predominantly in peaks 3 and 4. ApoB was not detected. The electron microscopic appearance of Peak 1 lipoproteins suggested partial lipolysis leading to the detection of a heparin-releasable triglyceride lipase consistent with endothelial lipase. The increased neuronal delivery of lipids from large lipoprotein particles, for which apoE4 has greater affinity than does apoE3, may be a mechanism whereby the apoE {var_epsilon}4 allele contributes to neurodegenerative risk.

Yang, Lin; Liu, Yanzhu; Forte, Trudy M.; Chisholm, Jeffrey W.; Parks, John S.; Shachter, Neil S.

2003-12-01T23:59:59.000Z

386

A quantitative study of the effect of structure on the saponification rates of aliphatic esters  

E-Print Network [OSTI]

(calibrated by the U ~ So National Bureau of Standards) in conjunction with a Wheatstone bridge. 30a 31 Electric timers were used to time the reactionsi The timers were found to be dependable by cheching their accuracy over a period of several days...' The resistance of the reaction mixture was determined by a Wheatstone bridge consisting of three decade resistance boxes' 30b Either a cathode ray oscilloscope or a null detector was used 30c to obtain the null pointi This was done visually, either...

Gonzalez, Federico P

1961-01-01T23:59:59.000Z

387

Hydrogenated soy ethyl ester (HySEE) from ethanol and waste vegetable oil  

SciTech Connect (OSTI)

Biodiesel is gaining recognition in the United States as a renewable fuel which may be used as an alternative to diesel fuel without any modifications to the engine. Currently the cost of this fuel is the factor that limits its use. One way to reduce the cost of biodiesel is to use a less expensive form of vegetable oil such as waste oil from a processing plant. These operations use mainly hydrogenated soybean oil, some tallow and some Canola as their frying oils. It is estimated that there are several million pounds of waste vegetable oil from these operations. Additional waste frying oil is available from smaller processors, off-grade oil seeds and restaurants. This paper reports on developing a process to produce the first 945 liters (250 gallons) of HySEE using recipes developed at the University of Idaho; fuel characterization tests on the HySEE according to the ASAE proposed Engineering Practice for Testing of Fuels from Biological Materials, X552; short term injector coking tests and performance tests in a turbocharged, DI, CI engine; and a 300 hour screening test in a single cylinder, IDI, CI engine.

Peterson, C.; Reece, D.; Thompson, J. [Univ. of Idaho, Moscow, ID (United States)] [and others

1995-11-01T23:59:59.000Z

388

Targeted delivery to PEPT1-overexpressing cells: Acidic, basic, and secondary floxuridine amino acid ester prodrugs  

Science Journals Connector (OSTI)

...homogenates and slower in human plasma and were most chemically...were obtained on a 300 MHz Bruker DPX-300 NMR...Cells were grown in an atmosphere of 5 CO2 and 90 relative...Stability in Human Plasma. The stability of the prodrugs in human plasma was determined using...

Christopher P. Landowski; Balvinder S. Vig; Xueqin Song; and Gordon L. Amidon

2005-04-01T23:59:59.000Z

389

Inhibition of Phorbol Ester Stimulated Interleukin 2 Production by Copper(II) Complexes  

Science Journals Connector (OSTI)

...COMPOUNDS AND INTERLEUKIN 2 PRODUCTION Equimolar amounts of perchloric...Bioassay of Interleukin 2 Production. A stock solution of PDB...cells were scraped with a rubber policeman. Cells were counted...COMPOUNDS AND INTERLEUKIN 2 PRODUCTION Cu0MeTIM was only minimally...

Janet Rauch Harrison; D. Paul Rillema; Joseph H. Ham IV; and Julianne J. Sando

1986-11-01T23:59:59.000Z

390

Transesterification of rubber seed oil by sonication technique for the production of methyl esters  

Science Journals Connector (OSTI)

The research and development activities in several countries on this subject have been mostly on sunflower, safflor, soybean, rapeseed and peanut among others; most of these being edible in Indian context. Thus, ...

S. Nivetha Ragavan; D. Vetha Roy

2011-07-01T23:59:59.000Z

391

Chiral N-salicylidene vanadyl carboxylate-catalyzed enantioselective aerobic oxidation of ?-hydroxy esters and amides  

Science Journals Connector (OSTI)

...reaction mixture became homogeneous by heating at 80 o C for 15 min and then gradually...96 %) of benzyl mandelate as colorless oil. OH O H N S16 Analytical data for benzyl-aryl...5951. (28) (a) Hughes, A. D.; Price, D. A.; Simpkins, N.l S. J. Chem...

Shiue-Shien Weng; Mei-Wen Shen; Jun-Qi Kao; Yogesh S. Munot; Chien-Tien Chen

2006-01-01T23:59:59.000Z

392

Low Temperature Autoignition of C8H16O2 Ethyl and Methyl Esters...  

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

500 600 700 800 900 1000 300 320 340 360 380 400 420 Apparent Heat Release Rate (kJDeg) Bulk Cylinder Gas Temperature (K) CA (Deg) -0.01 0.01 0.03 0.05 0.07 0.09 0.11 50 250 450...

393

Transparent Slippery Surfaces Made with Sustainable Porous Cellulose Lauroyl Ester Films  

Science Journals Connector (OSTI)

(c) Transparency of various nanoporous CLE films (dotted lines) and corresponding slippery CLE films (solid lines). ... The critical magnetic field required to start the drop in motion was 0.06 T (measured at a 20 mm drop–magnet distance by a Teslameter, Projekt Elektronik GmbH, Berlin). ... (c) Magnetic glycerol drop (60 ?L) divided into two droplets by two magnets applied beside the drop. ...

Longquan Chen; Andreas Geissler; Elmar Bonaccurso; Kai Zhang

2014-04-22T23:59:59.000Z

394

Usage of Fuel Mixtures Containing Ethanol and Rapeseed Oil Methyl Esters in a Diesel Engine  

Science Journals Connector (OSTI)

However, its use in the diesel engine cycle is hampered by the poor motor-fueling characteristics of lower alcohols and, primarily, the limited solubility of ethanol in fossil diesel fuel and its low self-ignition characteristics. ... Coefficient ? = Gair/(GfL0) estimates air supply into a diesel engine cylinder (indicator process), taking into account the differences of stoichiometric ratio L0 of the tested fuels, caused by the increase of the E portion in the RME?E mixture (Gair is air consumption, and Gf is fuel consumption). ... Future research will concentrate on the analysis of fuel injection and heat release rate characteristics in a cylinder, while a diesel engine is running on biodiesel fuels RME?E, and also on the operational parameters of diesel engines when fossil diesel fuel is replaced with three-component fuels D?RME?E. ...

Sergejus Lebedevas; Galina Lebedeva; Violeta Makareviciene; Prutenis Janulis; Egle Sendzikiene

2008-11-12T23:59:59.000Z

395

Experimental and Computational Thermochemical Study of 2-and 3-Thiopheneacetic Acid Methyl Esters  

E-Print Network [OSTI]

, biodiagnostics, electronic and optoelectronic devices, and conductive polymers. The present study reports found widespread use in modern drug design,3 biodiagnostics,4 electronic and optoelectronic devices,5

Chickos, James S.

396

E-Print Network 3.0 - acid propyl ester Sample Search Results  

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

in Complexation and Precipitation Summary: > trigalloylglucose >> proanthocyanidin monomer (-)- epicatechin propyl gallate. Smaller polyphenols can bind... proanthocyanidins...

397

N-Heterocyclic Carbene-Catalyzed Amidation of Unactivated Esters with Amino Alcohols  

Science Journals Connector (OSTI)

M.M. is a Dale F. and Betty Ann Frey Damon Runyon Scholar supported by the Damon Runyon Cancer Research Foundation (DRS-39-04). ... (b) Davies, D. H.; Hall, J.; Smith, E. H. J. Chem. ... (24)?Kemp, D. S.; Vellaccio, F., Jr. J. Org. ...

Mohammad Movassaghi; Michael A. Schmidt

2005-05-17T23:59:59.000Z

398

Beyond Fatty Acid Methyl Esters: Expanding the Renewable Carbon Profile with Alkenones from Isochrysis sp.  

Science Journals Connector (OSTI)

¶ Department of Botany, Faculty of Science, Alexandria University, Alexandria 21526, Egypt ... (a) Mata, T. M.; Martins, A. A.; Caetano, N. S. Renewable Sustainable Energy Rev. 2010, 14, 217– 232 ...

Gregory W. O’Neil; Catherine A. Carmichael; Tyler J. Goepfert; James M. Fulton; Gerhard Knothe; Connie Pui Ling Lau; Scott R. Lindell; Nagwa G-E. Mohammady; Benjamin A. S. Van Mooy; Christopher M. Reddy

2012-03-12T23:59:59.000Z

399

Biometal Catalyzed Ring-Opening Polymerization of Cyclic Esters: Ligand Design, Catalyst Stereoselectivity, and Copolymer Production  

E-Print Network [OSTI]

, Donald J. Darensbourg Committee Members, Abraham Clearfield Timothy R. Hughbanks Jean-Philippe Pellois Head of Department, David H. Russell May 2011 Major Subject: Chemistry iii ABSTRACT Biometal Catalyzed Ring-Opening Polymerization... me to continue on to graduate school. Dr. Abraham Clearfield, Dr. Jean-Philippe Pellois, Dr. Marcetta Y. Darensbourg, and Dr. Timothy R. Hughbanks are to be thanked for being involved in my education, for their guidance and assistance when needed...

Karroonnirun, Osit

2012-07-16T23:59:59.000Z

400

Membrane-permeant Esters of Phosphatidylinositol 3,4,5-Trisphosphate*  

E-Print Network [OSTI]

signaling cas- cades. A reliable means to introduce these lipids into intact cells would be of great value growth factor in inhibiting chloride secretion and potassium efflux, suggesting that phosphatidylinositol's action. The recent discovery of D-3 phosphorylated inositol lipids and their biosynthesis by a family

Tsien, Roger Y.

Note: This page contains sample records for the topic "mono alkyl ester" 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

Facile monomer stabilization approach to fabricate iron/vinyl ester resin nanocomposites  

E-Print Network [OSTI]

such as photovol- taic (solar) cells [11], polymer-electrolyte membrane fuel cells [12], and magnetic data storage in the marine (Naval sub- marine) industry [18] due to its good mechanical properties such as large Young

Guo, John Zhanhu

402

E-Print Network 3.0 - arrhizus ethyl esters Sample Search Results  

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

Rhizopus arrhizus fungal biomass. Biosorption was not considered globally... groups; Sorption capacity; Rhizopus arrhizus fungal biomass 1. Introduction The influential role of...

403

Combustion chemical kinetics of biodiesel and related compounds (methyl and ethyl esters): Experiments and  

E-Print Network [OSTI]

energy resource that has been consumed by the world's population, exceeding natural gas, coal, nuclear a shift toward alternative sources of energy that are renewable, sustainable, efficient, cost Industries Chimiques de Nancy, Laboratoire Réactions et Génie des Procédés, UMR CNRS 7274, 1 rue Grandville

Paris-Sud XI, Université de

404

Chiral N-salicylidene vanadyl carboxylate-catalyzed enantioselective aerobic oxidation of ?-hydroxy esters and amides  

Science Journals Connector (OSTI)

...65-66 o C. O O H N O O H N O O H N S43 References: (1) (a) Azizi, N.; Saidi, M. R. Sulfur Silicon Relat. Elem. 2003, 178, 2111. (b) Azizi, N.; Saidi, M. R. J. Organomet. Chem. 2003, 688, 283. (2) (a) Dhanoa, D...

Shiue-Shien Weng; Mei-Wen Shen; Jun-Qi Kao; Yogesh S. Munot; Chien-Tien Chen

2006-01-01T23:59:59.000Z

405

Effect of Phorbol Esters on Clonal Cultures of Human, Hamster, and Rat Respiratory Epithelial Cells  

Science Journals Connector (OSTI)

...PDD, phorbol-12,13-didecanoate; CFE, colony-forming efficiency (the percent...scored under a dissecting micro scope and the CFE was calculated for each replicate. The...concentration of 30 nM or higher. The maximal CFE seen was 10-fold over control. CFE of...

Diane K. Beeman; Jill M. Siegfried; Marc J. Mass

1987-01-15T23:59:59.000Z

406

Saponification rates of isomeric butyl esters in aqueous 1,4-dioxane  

E-Print Network [OSTI]

, "Handbuch der Organischen Chemie," l*th ed., Vol. II, J. Springer, Berlin, 1920 (see also 1st and 2nd supplements); %. Schlenk, Jr., Ann., 573, 1^2(1951). 26 V. 1,4-Dioxane. The 1,4-dioxane (Matheson Co.) used in this research was specified...

Ruhnke, Edward Vincent

2013-10-04T23:59:59.000Z

407

Gas Chromatographic Characterization of Some Phosphate Esters and Correlation of Polarity Criterion  

Science Journals Connector (OSTI)

......naphthenes, which was confirmed by analyzing the straight run gasoline, as shown in Figure 3. The column is suit able for...R of three solutes). Figure 3. Chromatogram of gasoline fraction on 10% bis-phenyl 2-methoxy-4(2......

S.D. Bhagat

1989-05-01T23:59:59.000Z

408

Slow-Injection Ultrasound-Assisted Emulsication–Microextraction for Determination of Phthalate Esters in Water  

Science Journals Connector (OSTI)

......the environment during production and incineration (3, 5). Water, soil, air and food products contaminated with PAEs have been reported (6-10), and the pollution they cause has become a matter of public concern. Therefore, the development......

Songqing Li; Tong Li; Peng Gao; Runhua Lu; Wenfeng Zhou; Haixiang Gao

2014-10-01T23:59:59.000Z

409

Mechanism-Based Triarylphosphine-Ester Probes for Capture of Endogenous RSNOs  

E-Print Network [OSTI]

Nitrosothiols (RSNOs) have been proposed as important intermediates in nitric oxide (NO[superscript •]) metabolism, storage, and transport as well as mediators in numerous NO-signaling pathways. RSNO levels are finely ...

Wishnok, John S.

410

E-Print Network 3.0 - acid dibutyl ester Sample Search Results  

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

(D002) identifies wastes that are acidic or alkaline (basic... containers for corrosive waste or glass containers for waste containing hydrofluoric acid. For liquid waste......

411

E-Print Network 3.0 - acid t-butyl ester Sample Search Results  

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

at Berkeley Collection: Materials Science ; Chemistry 67 Management of Hazardous Waste A Policy and Procedures Manual Summary: . It can be substituted by...

412

E-Print Network 3.0 - acid phenylethyl ester Sample Search Results  

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

(D002) identifies wastes that are acidic or alkaline (basic... containers for corrosive waste or glass containers for waste containing hydrofluoric acid. For liquid waste......

413

A STUDY OF FUNDAMENTAL REACTION PATHWAYS FOR TRANSITION METAL ALKYL COMPLEXES. I. THE REACTION OF A NICKEL METHYL COMPLEX WITH ALKYNES. II. THE MECHANISM OF ALDEHYDE FORMATION IN THE REACTION OF A MOLYBDENUM HYDRIDE WITH MOLYBDENUM ALKYLS  

E-Print Network [OSTI]

relative rates of Sn2 and ocesses in the reaction of 1 withthat these reactions proceed by an Sn2 displacementthe anion, the reaction was found to proceed by Sn2 di prima

Huggins, John Mitchell

2013-01-01T23:59:59.000Z

414

Derivatization of Alkyl Halides, Acid Chlorides, and Other Electrophiles with Polymer-Immobilized 8-Amino-2-naphthoxide  

Science Journals Connector (OSTI)

......ISKANDARANI A N D T . E . MILLER, JR. S I M U L T A N E O U S...N D E K , U . A . T H . B R I N K M A N , A N D R . W...ORGANICS I N THE E N V I R O N M E N T B Y T A N D E...1 9 8 5 ) . 2 4 . M . E . MCNALLY A N D R . L . GROB. H E A D S P......

Stephen T. Colgan; Ira S. Krull; Craig Dorschel; Brian A. Bidlingmeyer

415

Genomic phenotyping of the essential and non-essential yeast genome detects novel pathways for alkylation resistance  

E-Print Network [OSTI]

Background: A myriad of new chemicals has been introduced into our environment and exposure to these agents can damage cells and induce cytotoxicity through different mechanisms, including damaging DNA directly. Analysis ...

Svensson, J. Peter

416

REMOVAL OF Hg(II) FROM AN AQUEOUS MEDIUM BY ADSORPTION ONTO NATURAL AND ALKYL-AMINE MODIFIED BRAZILIAN BENTONITE  

Science Journals Connector (OSTI)

...El-Rassy, H. (2010) Mercury removal from aqueous solutions using silica, polyacrylamine and hybrid silica-polyacrylamide aerogels. Chemical Engineering Science , 159 , 107-115. Ruiz, V.S.O. and Airoldi, C. (2004) Thermochemical data for n-alkylmonoamine...

Denis L. Guerra; Emiliano M. Silva; Weber Lara; Adriano C. Batista

417

Input to Flowsheet Simulation This appendix contains the input that was entered for alkylation model in the  

E-Print Network [OSTI]

-D C-607 Isobuatane Accumulator Pot C-614A Suction Trap C-614B Flash Drum C-615 Refrigerant Accumulator Isobutane chiller E-634-56 Refrigerant Partial Condenser E-640 Economizer Feed Cooler E-641-44 Depropanizer Charge Condenser E-695 Alky Deisobutanizer Reboiler E-696 Alky Deisobutanizer Side Reboiler E-6XX

Pike, Ralph W.

418

Tadross, Virgil, and Stoltz Supporting Information Aryne Acyl-Alkylation in the General and Convergent Synthesis of Benzannulated  

E-Print Network [OSTI]

procedure.1 Commercially obtained reagents were used as received with the exception of acrolein, which Procedures O O 11 LDA, then acrolein THF, ­78 °C (74% yield) O O 12 HO -Hydroxyester 12. To a solution in THF (2 mL). After 20 minutes, acrolein (856 µL, 12.8 mmol) was added as a solution in THF (2.5 m

Stoltz, Brian M.

419

Comparison of the use of sulfonate-derivatives of ethoxylated and/or propoxylated alkyl phenols in enhanced oil recovery  

SciTech Connect (OSTI)

Nonyl phenol has been ethoxylated and/or propoxylated: the results of the characterization of product non-ionic surfactants by NMR, hplc, and FAB-ms are described. These were then sulfonated and measurements of their phase equilibria: thermal and chemical stability: interfacial tension, viscosity, and contact angles, and rate and extent of adsorption were carried out as a function of temperature, salinity, and concentration, and in the presence and absence of co-surfactants and cosolvents to determine their EOR potential. Such properties are explained in terms of their molecular characteristics: these are related to de-oiling and surfactant flood results.

Lawrence, S.A.; Pilc, J.; Sermon, P.A.; Skidmore, P.G.; Hurd, B.G.; Broadhurst, P.V.

1988-05-01T23:59:59.000Z

420

The seasonal evolution of NMHCs and light alkyl nitrates at middle to high northern latitudes during TOPSE  

E-Print Network [OSTI]

Meinardi,1 Oliver W. Wingenter,3 Elliot L. Atlas,4 Frank Flocke,4 Brian A. Ridley,4 and F. Sherwood Rowland with meteorological trajectory analysis, different trace gas signatures provided significant clues to the origins here provide a unique picture of NH trace gas evolution from winter to summer that will be invaluable

Wingenter, Oliver W.

Note: This page contains sample records for the topic "mono alkyl ester" 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

Vaccination of Rabbits with an Alkylated Toxoid Rapidly Elicits Potent Neutralizing Antibodies against Botulinum Neurotoxin Serotype B  

Science Journals Connector (OSTI)

...has proven problematic, prompting a demand for alternative toxin-derived immunogens...were monitored for moribundity three times daily for 5 days. RESULTS Expression and purification...during an outbreak of type E botulism in Egypt. Clin. Infect. Dis. 23: 337-340...

Daniel M. Held; Amy C. Shurtleff; Scott Fields; Christopher Green; Julie Fong; Russell G. A. Jones; Dorothea Sesardic; Roland Buelow; Rae Lyn Burke

2010-04-21T23:59:59.000Z

422

Mitochondrial Targeting of Human O6-Methylguanine DNA Methyltransferase Protects against Cell Killing by Chemotherapeutic Alkylating Agents  

Science Journals Connector (OSTI)

...different mode of action. MMS is a monofunctional methylating agent that reacts with cellular DNA via a second-order SN2-type reaction. MMS primarily methylates DNA at N 7-guanine and N 3-adenine nucleophilic centers. MMS-induced DNA lesions...

Shanbao Cai; Yi Xu; Ryan J. Cooper; Michael J. Ferkowicz; Jennifer R. Hartwell; Karen E. Pollok; and Mark R. Kelley

2005-04-15T23:59:59.000Z

423

Anhydrous ferric chloride as an alkylation catalyst: The condensation of 2-methylpropene and benzene, preparation and identification of several fractions.  

E-Print Network [OSTI]

-butylbe!!zeno. i':o tri-t-buty''oe:&zones ar, fo& ~ ed d!&r-'n~ t ! &. s &. en c't i c&n 24. . ? Dej", e, J. . 'r . Ch. !-. oc. , 60 2079 , lot&7) 25. ? Price an Cir):o;;. .-:. ' i, ibid. , (0, 2! 9o (lo3&&) 26. ? Fairbrother, Trans. Fa~ra av '~oc. , 37, 7'. 3...

Mommessin, Pierre Robert

2012-06-07T23:59:59.000Z

424

RECOVERY OF LACTIC ACID FROM AMERICAN CRYSTAL SUGAR COMPANY WASTEWATER  

SciTech Connect (OSTI)

This project has shown that the recovery of several valuable lactic acid products is both technically feasible and economically viable. One of the original objectives of this project was to recover lactic acid. However, the presence of a variety of indigenous bacteria in the wastewater stream and technical issues related to recovery and purification have resulted in the production of lactic acid esters. These esters could by hydrolyzed to lactic acid, but only with unacceptable product losses that would be economically prohibitive. The developed process is projected to produce approximately 200,000 lb per day of lactate esters from wastewater at a single factory at costs that compete with conventional solvents. The lactate esters are good solvents for polymers and resins and could replace acetone, methyl ethyl ketone, MIBK, and other polar solvents used in the polymer industry. Because of their low volatility and viscosity-lowering properties, they will be especially useful for inks for jet printers, alkyl resins, and high-solid paints. Owing to their efficiency in dissolving salts and flux as well as oils and sealants, lactate esters can be used in cleaning circuit boards and machine and engine parts. Unlike conventional solvents, lactate esters exhibit low toxicity, are biodegradable, and are not hazardous air pollutants. Another application for lactate esters is in the production of plasticizers. Severe health problems have been attributed to widely used phthalate ester plasticizers. The U.S. Department of Agriculture showed that replacement of these with inexpensive lactate esters is feasible, owing to their superior polymer compatibility properties. A very large market is projected for polymers prepared from lactic acid. These are called polylactides and are a type of polyester. Thermoplastics of this type have a variety of uses, including moldings, fibers, films, and packaging of both manufactured goods and food products. Polylactides form tough, orientable, self-supporting thin films and have, therefore, been used for adhesives, safety glass, and finishes. If the bacterial culture produces the L-lactic acid enanatiomer form exclusively, the L-lactide prepared from this form can be used for making polymers with good fiber-forming properties. We have not currently achieved the exclusive production of L-lactate in our efforts. However, markets in films and structural shapes are available for polymers and copolymers prepared from the mixed D,L-lactide forms that result from processing the D,L-lactic acid obtained from fermentation such as that occurring naturally in sugar beet wastewater. These materials are slowly biodegraded to harmless compounds in the environment, and they burn with a clean blue flame when incinerated. These materials represent excellent opportunities for utilization of the D,L-lactic mixture produced from natural fermentation of the ACS flume water. Esters can be converted into a lactide, and the alcohol released from the ester can be recycled with no net consumption of the alcohol. Lactide intermediates could be produced locally and shipped to polymer producers elsewhere. The polymer and copolymer markets are extremely large, and the role of lactides in these markets is continuously expanding. The overall process can be readily integrated into existing factory wastewater operations. There are several environmental benefits that would be realized at the factories with incorporation of the lactate recovery process. The process reduces the organic loading to the existing wastewater treatment system that should result in enhanced operability with respect to both solids handling and treated-water quality. A higher-quality treated water will also help reduce odor levels from holding ponds. Several water reuse opportunities are probable, depending on the quality of treated water from the FT process.

Daniel J. Stepan; Edwin S. Olson; Richard E. Shockey; Bradley G. Stevens; John R. Gallagher

2001-04-30T23:59:59.000Z

425

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

426

Metal carbonyl-hydrosilane reactions and hydrosilation catalysis. Final report for period May 1, 1995 - August 14, 1999  

SciTech Connect (OSTI)

Manganese carbonyl complexes serve as hydrosilation precatalysts for selectively transforming a carbonyl group into a doxy methylene or a fully reduced methylene group. Substrates of interest include (1) aldehydes, ketones, carboxylic acids, silyl esters, and esters, and (2) their organometallic acyl counterparts. Two types of manganese precatalysts have been reported: (a) alkyl and acyl complexes (L)(CO){sub 4}MnR [L = CO, PPh{sub 3}; R = COCH{sub 3}, COPh, CH{sub 3}] and (b) halides (CO){sub 5}MnX and [(CO){sub 4}MnX]{sub 2} (X = Br, I). The former promote hydrosilation and deoxygenation catalysis; the latter promote dehydrogenative silation of alcohols and carboxylic acids as well as hydrosilation and deoxygenation of some metallocarboxylic acid derivatives. In every case studied, these Mn precatalysts are far more reactive or selective than traditional Rh(l) precatalysts. The reaction chemistry of the above and other Mn alkyl complexes with hydrosilanes was studied in order to probe catalysis mechanism(s). Thus, Mn(CO){sub 5} methyl, benzyl, acetyl, and benzoyl (4 p-substituents) complexes reacted with hydrosilines by four different mechanisms, which were established. A noteworthy development was that the methyl and benzoyl complexes gave moderate yields of a new ({eta}{sup 2}-Si-H) silane adduct (CO){sub 4}Mn(SiMe{sub 2}Ph)(H-SiMe{sub 2}Ph), which is stable in the presence of excess silane. This silane adduct promotes all three catalytic reactions; its extraordinary activity and potential selectivity are under study.

Cutler, Alan R.

2001-04-14T23:59:59.000Z

427

Application of infrared birefringence imaging for measuring residual stress in multicrystalline, quasi-mono, dendritic web, and string ribbon silicon for solar cells  

E-Print Network [OSTI]

One of the parameters with highest impact on photovoltaic module cost is manufacturing yield during solar cell production. Yield is, to a great extent, directly affected by the crystallization technique used to grow the ...

Castellanos Rodríguez, Sergio

2014-01-01T23:59:59.000Z

428

Reactivity of Mono-Meso-Substituted Iron(II) Octaethylporphyrin Complexes with Hydrogen Peroxide in the Absence of Dioxygen. Evidence for Nucleophilic Attack on the Heme  

Science Journals Connector (OSTI)

Heather Kalish ,† Jason E. Camp ,† Marcin St?pie? ,‡ Lechos?aw Latos-Gra?y?ski ,‡ and Alan L. Balch * ... Octaethylporphyrin and iron(III) octaethylporphyrin chloride were purchased from Mid Century. ...

Heather Kalish; Jason E. Camp; Marcin St?pie?; Lechos?aw Latos-Gra?y?ski; Alan L. Balch

2001-11-01T23:59:59.000Z

429

meso Substituent Effects on the Geometric and Electronic Structures of High-Spin and Low-Spin Iron(III) Complexes of Mono-meso-Substituted Octaethylporphyrins  

Science Journals Connector (OSTI)

Heather Kalish ,† Jason E. Camp ,† Marcin St?pie? ,‡ Lechos?aw Latos-Gra?y?ski ,*‡ Marilyn M. Olmstead ,† and Alan L. Balch *‡§ ... Octaethylporphyrin and iron(III) octaethylporphyrin chloride were purchased from Mid Century. ...

Heather Kalish; Jason E. Camp; Marcin St?pie?; Lechos?aw Latos-Gra?y?ski; Marilyn M. Olmstead; Alan L. Balch

2002-01-31T23:59:59.000Z

430

Rheology Of MonoSodium Titanate (MST) And Modified Mst (mMST) Mixtures Relevant To The Salt Waste Processing Facility  

SciTech Connect (OSTI)

The Savannah River National Laboratory performed measurements of the rheology of suspensions and settled layers of treated material applicable to the Savannah River Site Salt Waste Processing Facility. Suspended solids mixtures included monosodium titanate (MST) or modified MST (mMST) at various solid concentrations and soluble ion concentrations with and without the inclusion of kaolin clay or simulated sludge. Layers of settled solids were MST/sludge or mMST/sludge mixtures, either with or without sorbed strontium, over a range of initial solids concentrations, soluble ion concentrations, and settling times.

Koopman, D. C.; Martino, C. J.; Shehee, T. C.; Poirier, M. R.

2013-07-31T23:59:59.000Z

431

Volumetric Properties of Mono-, Di-, Tri-, and Polyethylene Glycol Aqueous Solutions from (273.15 to 363.15) K: Experimental Measurements and Correlations  

Science Journals Connector (OSTI)

Glycols are very important chemicals widely used in various industrial sectors, such as automotive, aviation, explosives, textiles, coatings, food, pharmaceuticals, cosmetics, natural gas processing, petroleum and petrochemicals, flue gas treatment, air conditioning systems, household, etc. ... Glycols are the most commonly used desiccants in gas dehydration for typical applications where dew point depressions are of the order of (30 to 70) K. ... Symbols are based on information in Table 2, and the solid line is the tendency curve. ...

Waheed Afzal; Amir H. Mohammadi; Dominique Richon

2009-03-18T23:59:59.000Z

432

Photodynamic therapy using mono-L-aspartyl chlorin e6 (Npe6) for the treatment of cutaneous disease: a Phase I clinical study.  

Science Journals Connector (OSTI)

...kg combined with 100 J/cm2 of light energy resulted in better control of tumor regrowth...hospitalization, evaluation included car-diac monitoring for 24 h, beginning...appears to offer a practical and safe alternative to other presently available photosensitizers...

S W Taber; V H Fingar; C T Coots; and T J Wieman

1998-11-01T23:59:59.000Z

433

Three-Dimensional Imaging of the Crust and Upper Mantle in the Long Valley-Mono Craters Region, California, Using Teleseismic P-Wave Residuals  

Science Journals Connector (OSTI)

Teleseismic travel time residuals measured at 90 seismic stations centered on the Long Valley caldera in eastern California were inverted to ... resolved mid-crustal low-velocity bodies in the Long Valley region....

P. B. Dawson; H. M. Iyer; J. R. Evans

1992-01-01T23:59:59.000Z

434

Synthesis of mono-substituted 2,2A-bipyridines Joseph G. Cordaro,a James K. McCusker*b and Robert G. Bergman*a  

E-Print Network [OSTI]

be difficult when isomers are formed. Alternatively, 4-bromo-2,2A-bipyridine can be functionalized via lithium is transformed into the pyridine product following treatment with ammonium acetate in acetic acid. Based

McCusker, James K.

435

Mono and Colour QSIF Digital Video CMOS Image Sensors cd5301-6301f: Rev 3.0, 25 September 2000 1/50  

E-Print Network [OSTI]

Exposure control Automatic ( to +44dB) Analogue gain +18dB Signal/Noise ratio 36dB Supply voltage 5V DC +/- 5% Supply current VV5301-VV6301 2.9mA (standby) 14.6mA (active) Operating temperature (ambient) 0o (colourised) produce digital video output. The video streams from both devices contain embedded control data

Baltes, Jacky

436

Determination of Triclosan as Its Pentafluorobenzoyl Ester in Human Plasma and Milk Using Electron Capture Negative Ionization Mass Spectrometry  

Science Journals Connector (OSTI)

A sensitive method for the determination of triclosan in plasma and milk is presented. Following hydrolysis of possible conjugates, triclosan is extracted with n-hexane/acetone, partitioned into alcoholic potassium hydroxide, and converted into its ...

Mats Allmyr; Michael S. McLachlan; Gunilla Sandborgh-Englund; Margaretha Adolfsson-Erici

2006-07-22T23:59:59.000Z

437

The development of a rod-coil redox polymer composed of biphenyl esters and poly (4-vinylpyridine)  

E-Print Network [OSTI]

such as dichloromethane. Cleavage of the protecting group is usually accomplished by acids or by a fluoride ion (Bu4N'F, KF or aqueous HF in CHsCN). Base Me)Sicl + ~ SM [Hct 0 R H I es 3. 2. 2. 1 Reagents. Ether, 4-hydroxy-4-biphenyl carboxylic acid, petroleum ether... CHs CH3 CHs I C ? OH + HO y y y y C ? 0 ? Si ? C ? CH CHs CHs 0 0 CHs CH3 CHs II I I C ? 0 y g y y C ? 0 ? SI ? C ? CH CHs CHs DiPC DPTS Figure 3-3. The chemical reaction of room temperature esterification. The coil, with the carboxylic...

DeCormier, Amy Urbanowicz

2012-06-07T23:59:59.000Z

438

Regulation of thyroid peroxidase activity by thyrotropin, epidermal growth factor and phorbol ester in porcine thyroid follicles cultured in suspension  

Science Journals Connector (OSTI)

The activity of thyroid peroxidase (TPO) in porcine follicles cultured for 96 h in suspension with five hormones (5H) still attained over 50 % of that in the freshly isolated follicles. On the other hand, the activity in those cultured with 5H + TSH (6H) was several times higher than that cultured with 5H after 96 h, although an initial decrease of TPO activity during the first 24 h culture was observed in both conditions. The ability of follicles to metabolize iodide (uptake and organification) when cultured with 6H for 96 h was also several times higher than that of those cultured with 5H. The half-maximal dose of TSH for stimulation of TPO activity and iodide metabolism was 0.03 – 0.04 mU/ml and the effect was mediated by cAMP. These results indicate that in porcine thyroid follicles in primary suspension culture, TPO activity as well as the ability of iodine metabolism is induced by chronic TSH stimulation. In addition, epidermal growth factor (EGF, 10?9 M) and phorbol 12-myristate 13-acetate (PMA, 10?8 M) completely inhibited TSH stimulation on both activities and also basal (5H) activity of iodide metabolism.

Kikuo Kasai; Takeshi Ohmori; Narumi Koizumi; Toichiro Hosoya; Masaki Hiraiwa; Tatsushi Emoto; Yoshiyuki Hattori; Shin-Ichi Shimoda

1989-01-01T23:59:59.000Z

439

Nuclear magnetic resonance investigation of dynamics in poly(ethylene oxide)-based lithium polyether-ester-sulfonate ionomers  

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

Nuclear magnetic resonance (NMR) spectroscopy has been utilized to investigate the dynamics of poly(ethylene oxide)-based lithium sulfonate ionomer samples that have low glass transition temperatures. 1H and 7Li spin-lattice relaxation times (T1) of the bulk polymer and lithium ions, respectively, were measured and analyzed in samples with a range of ion contents. The temperature dependence of T1 values along with the presence of minima in T1 as a function of temperature enabled correlation times and activation energies to be obtained for both the segmental motion of the polymer backbone and the hopping motion of lithium cations. Similar activation energies for motion of both the polymer and lithium ions in the samples with lower ion content indicate that the polymer segmental motion and lithium ion hopping motion are correlated in these samples, even though their respective correlation times differ significantly. A divergent trend is observed for correlation times and activation energies of the highest ion content sample with 100% lithium sulfonation due to the presence of ionic aggregation. Details of the polymer and cation dynamics on the nanosecond timescale are discussed and complement the findings of X-ray scattering and Quasi Elastic Neutron Scattering experiments.

Roach, David J. [Pennsylvania State University, University Park, PA (United States); Dou, Shichen [Pennsylvania State University, University Park, PA (United States); Colby, Ralph H. [Pennsylvania State University, University Park, PA (United States); Mueller, Karl T. [Pacific Northwest Lab., Richland, WA (United States)

2012-01-06T23:59:59.000Z

440

OBSERVATIONS IN REACTIVITY BETWEEN BH CONTAINING COMPOUNDS AND ORGANOMETALLIC REAGENTS: SYNTHESIS OF BORONIC ACIDS, BORONIC ESTERS, AND MAGNESIUM HYDRIDES  

E-Print Network [OSTI]

aryl bromides and H 2 BN(iPr) 2 Scheme 2.7. Hydroboration oftransfer hydride to BH 2 -N(iPr) 2 Scheme 2.10. Conversionchloride with BH 2 -N(iPr) 2 Scheme 3; Aqueous quench of p-

Clary, Jacob William

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

In-cylinder pressure characteristics of a CI engine using blends of diesel fuel and methyl esters of beef tallow  

SciTech Connect (OSTI)

A Cummins N14-410 diesel engine was operated on 12 fuels produced by blending methyl tallowate, methyl soyate, and ethanol with no. 2 diesel fuel. Engine in-cylinder pressure data were used to evaluate engine performance. Peak cylinder pressures for each fuel blend at all engine speeds were lower than peak pressure for diesel fuel with the exception of the 80% diesel, 13% methyl tallowate, and 7% ethanol; and the 80% diesel, 6.5% methyl tallowate, 6.5% methyl soyate and 7% ethanol blends. The indicated mean effective pressure (IMEP) values for all fuel blends were less than for diesel fuel. The differences in IMEP values correlated with differences in power output of the engine. Similarly, maximum rates of pressure rise for most fuel blends were less than for diesel fuel. It was concluded that the fuel blends used in this study would have no detrimental long-term effects on engine performance, wear, and knock. 6 refs., 4 figs., 7 tabs.

Ali, Y.; Hanna, M.A.; Borg, J.E. [Univ. of Nebraska, Lincoln, NE (United States)

1996-05-01T23:59:59.000Z

442

Fourier Transform Infrared (FT-IR) Microspectroscopic Census of Single Starch Granules for Octenyl Succinate Ester Modification  

Science Journals Connector (OSTI)

Fourier transform infrared (FT-IR) microspectroscopy was used to investigate reaction homogeneity of octenyl succinic anhydride modification on waxy maize starch and detect uniformity of blends of modified and native starches. For the first time, the ...

Yanjie Bai; Yong-Cheng Shi; David L. Wetzel

2009-06-24T23:59:59.000Z

443

The Occurrence and Biological Activity of Ferulate-Phytosterol Esters in Corn Fiber and Corn Fiber Oil  

Science Journals Connector (OSTI)

Corn fiber is a pericarp-rich fraction obtained during the processing of corn via “wetmilling.” Wet milling of corn is used by all companies that produce corn starch and corn sweeteners, and by many companies tha...

Robert A. Moreau; Michael J. Powell…

1997-01-01T23:59:59.000Z

444

Combustion and emission characteristics of diesel engine fuelled with methyl esters of pungam oil and rice bran oil  

Science Journals Connector (OSTI)

Biodiesel derived from vegetable oils and animal fats can be used in diesel engines with little or no modifications. In this work, the combustion, performance and emission characteristics of various biodiesel (rice bran oil and pungam oil) and their blends are evaluated in a direct injection diesel engine. Lower ignition delay, higher peak pressure and heat release rate with almost same brake thermal efficiency are obtained for 20% biodiesel blend as compared with diesel fuel. They exhibited lower unburned hydrocarbon, carbon monoxide and soot emissions with a penalty of higher NOx emissions.

G. Lakshmi Narayana Rao; N. Nallusamy; S. Sampath; K. Rajagopal

2008-01-01T23:59:59.000Z

445

Molecular Dynamics Simulation of the Effect of Hydrophobic Cosolutes on the Neutral Hydrolysis of an Activated Ester  

Science Journals Connector (OSTI)

Physical Organic Chemistry Unit, Stratingh Institute, University of Groningen, and Groningen Biochemistry and Biotechnology Institute (GBB), Department of Biophysical Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands ... (17)?Postma, J. P. M. Ph.D. Thesis, University of Groningen, The Netherlands, 1985. ... (32)?van Gunsteren, W. F.; Berendsen, H. J. C. GROMOS, Groningen Molecular Simulation Package; Biomos B.V.:? Nijenborgh 16, 9747 AG Groningen, The Netherlands, 1987. ...

Theo Rispens; Marc F. Lensink; Herman J. C. Berendsen; Jan B. F. N. Engberts

2004-04-06T23:59:59.000Z

446

Durability of E-glass fiber reinforced vinyl ester polymer composites with nanoclay in an alkaline environment.  

E-Print Network [OSTI]

??This study was conducted to determine the effect of clay content in the GFRP (glass fiber reinforced polymer) composite samples as they are aged in… (more)

Ravindran, Naveenkamal.

2005-01-01T23:59:59.000Z

447

Supporting Information for Stoltz et al. SI 1 Development of (Trimethylsilyl)Ethyl Ester Protected Enolates and  

E-Print Network [OSTI]

cm) obtained from Daicel Chemical Industries, Ltd. Analytical SFC was performed with a Mettler SFC-H, or OB-H) columns (4.6 mm x 25 cm) obtained from Daicel Chemical Industries, Ltd. Analytical chiral GC). TLC was performed using E. Merck silica gel 60 F254 precoated glass plates (0.25 mm) and visualized

Stoltz, Brian M.

448

v-Ha-ras transgene abrogates the initiation step in mouse skin tumorigenesis: effects of phorbol esters and retinoic acid.  

Science Journals Connector (OSTI)

...K. (1974) CRC Crit. Rev. Toxicol. 2, 419-431. 3. Burns, F. J., Vanderlaan, M., Snyder, E. & Albert, R. E...and Cancer: From Basic Research to Policy Implications, ed. Roe, D. (Liss, New York), pp. 95-109. 34. Lichti, U...

A Leder; A Kuo; R D Cardiff; E Sinn; P Leder

1990-01-01T23:59:59.000Z

449

Effects of Type of Dietary Fat on Phorbol Ester-elicited Tumor Promotion and Other Events in Mouse Skin  

Science Journals Connector (OSTI)

...PROMOTION carcinoma development; the second part...CLA inhibited the development of tumors in the...standards, and snake venom phospholipase...The column oven temperature was programmed...by sonication. Snake venom phospholipase...incubation at room temperature for 30 min. At...

Julius Leyton; Marilyn L. Lee; Mary Locniskar; Martha A. Belury; Thomas J. Slaga; David Bechtel; and Susan M. Fischer

1991-02-01T23:59:59.000Z

450

The Role of a Common Variant of the Cholesteryl Ester Transfer Protein Gene in the Progression of Coronary Atherosclerosis  

Science Journals Connector (OSTI)

...per deciliter (4 to 8 mmol per liter), and a plasma triglyceride concentration of less than 350 mg per deciliter (4 mmol per liter). Patients were subsequently randomly assigned to treatment with pravastatin sodium (Pravachol, Bristol-Myers Squibb, Princeton, N.J.) at a dose of 40 mg per day or placebo... Patients with clinically apparent coronary artery disease are at high risk for recurrent cardiovascular events. Efforts to prevent such events often involve cholesterol-lowering therapy, which has been demonstrated to reduce total mortality significantly ...

Kuivenhoven J.A.; Jukema J.W.; Zwinderman A.H.

1998-01-08T23:59:59.000Z

451

Densities and isobaric vapor-liquid equilibria for the mixtures formed by four butyl esters and 1-butanol  

SciTech Connect (OSTI)

Densities of 298.15 K and the vapor-liquid equilibria for 1-butanol + butyl methanoate, + butyl ethanoate, + butyl propanoate, and + butyl butanoate have been measured at 101.32 kPa in small capacity ebulliometer. All results were found to be thermodynamically consistent with a point-to-point test. The mixtures containing butyl methanoate and butyl ethanoate show azeotropes at T = 379.14 K, x = 0.871 and T = 389.64 K, x = 0.222, respectively. Different group-contribution methods were applied to these mixtures.

Gonzalez, E.; Ortega, J. [Univ. of Las Palmas de Gran Canaria (Spain)] [Univ. of Las Palmas de Gran Canaria (Spain)

1996-01-01T23:59:59.000Z

452

A determination of the heats of combustion of the five-carbon fatty acids and their methyl and ethyl esters  

E-Print Network [OSTI]

'srr Ins~ Ce?c ~c Dl? 30? Tbe bstwLs sodAL 1Need wss ohtwixlsd frccc ths Q?S? Wool? Bar? of ghsnclalPds? Tbs hest ef ~tdocc wss giwRl se g6?QQ shs? kja/g? cocos (weighed in wceccs) er QLg eaL/g? essa (in @sees)? 3 oslorie? 0?wg$840 sbs, +? 'ei ~ r...LLd bs ~aied fer tbs fi~carhc?L aCCLds?ad the baste of vaoorisat4os of tbs ether Lsaee4e ac@de ae4hsated a4 their ~g, xdn4s The bs?te of vsyorhwQ. oe o' ths sands a4 2~ C? wars estiaated ly a?S~ 4R? k", ~? ~4lcsi55, ccsd '~ ~ . -? AIL' %7? Q? ~ +sad...

Gilby, Ralph F

2012-06-07T23:59:59.000Z

453

Marine sediment-derived actinomycetes : prolific sources of new molecules with the potential for the treatment and prevention of cancer  

E-Print Network [OSTI]

FIGURES Figure I.1. Synthetic DNA Alkylating Agents Derivedseveral other purely synthetic DNA alkylating agents wereN O O O Figure I.1. Synthetic DNA Alkylating Agents Derived

Miller, Eric David

2007-01-01T23:59:59.000Z

454

New immobilized antimicrobial polyethylenimines : synthesis and properties  

E-Print Network [OSTI]

Surfaces modified with immobilized N-alkyl-polyethylenimines (N-alkyl-PEls) containing various alkyl groups were synthesized and tested against various pathogenic human influenza viruses to establish structure-to-virucidal ...

Liu, Harris K. (Harris Ken-Ming)

2014-01-01T23:59:59.000Z

455

Investigation of furan compounds L. Synthesis of N-alkyl- and N-aryl-substituted diureides of tetrahydrofuran-2,5- and tetrahydrothiophene-2,5-dicarboxylic acids  

Science Journals Connector (OSTI)

The corresponding diureides of tetrahydrofuran-2,5- and tetrahydrothiophene-2,5-dicarboxylic acids and the dithioureide of tetrahydrothiophene-2,5-dicarboxylic acid were obtained by ... acid dichlorides of tetrah...

A. A. Ponomarev; N. I. Martem'yanova

1971-12-01T23:59:59.000Z

456

Effect of Surface Oxide Layer of Steel on the Tribological Characteristics of Load-bearing Additives for Multiply-Alkylated Cyclopentane Oil under High Vacuum  

Science Journals Connector (OSTI)

In the present study, two load-bearing additives formulated in MAC base oil that are ... presence of the original oxide layer and its removal should be taken into account when evaluating load-bearing additives. I...

Masabumi Masuko; Shigeru Iijima; Takahiro Terawaki; Akihito Suzuki…

2013-07-01T23:59:59.000Z

457

Analysis of Ecgonine and Other Cocaine Biotransformation Products in Postmortem Whole Blood by Protein Precipitation-Extractive Alkylation and GC-MS  

Science Journals Connector (OSTI)

......polarity and water solubility make its isolation...extracts is performed by gas chromatography-mass...blood Esterification Gas Chromatography-Mass...polarity and associated water solubility make it verydifficultto...a stream ofair or nitrogen at 75~ Derivatization......

David Smirnow; Barry K. Logan

1996-10-01T23:59:59.000Z

458

Memantine and the amino-alkyl-cyclohexane MRZ 2/579 are moderate affinity uncompetitive NMDA receptor antagonists –in vitro characterisation  

Science Journals Connector (OSTI)

...There is general agreement that moderate affinity uncompetitive NMDA receptor antagonists combine good efficacy and tolerability in animal models of disturbances in glutamatergic transmission. There are severa...

C. G. Parsons; W. Danysz; G. Quack

2000-08-01T23:59:59.000Z

459

Thermal, Oxidative and CO2 Induced Degradation of Primary Amines Used for CO2 Capture: Effect of Alkyl Linker on Stability  

Science Journals Connector (OSTI)

Work by Danon et al. using FTIR spectroscopy to observe the nature of adsorbed CO2 on grafted aminosilicas suggests that amine–silanol interactions are another route for CO2 to adsorb onto the surface in dry conditions, as opposed to the more commonly discussed pathway of two amines adsorbing CO2 to form a carbamate. ... Danon, A.; Stair, P. C.; Weitz, E.FTIR Study of CO2 Adsorption on Amine-Grafted SBA-15: Elucidation of Adsorbed Species J. Phys. ... Danon, Alon; Stair, Peter C.; Weitz, Eric ...

Stephanie A. Didas; Rongshun Zhu; Nicholas A. Brunelli; David S. Sholl; Christopher W. Jones

2014-05-19T23:59:59.000Z

460

Enzyme-alterable Alkylating Agents: IX. The Enzymatic Transformation of Some Nitrogen Mustards in the Presence of Carbon Dioxide: Implications in Respiration  

Science Journals Connector (OSTI)

...nor-HN2 and blood serum does not occur in the absence...reaction of nor-HX2 does not. Although nor-HN2...Although this sub stance does not react directly with...R. M. (eds.), Handbook of Res piration, 93...Medical Physiology and Bio physics, Ed. 18, pp. 544-46...

Charles E. Williamson; James G. Kirby; Jacob I. Miller; Samuel Sass; Stanley P. Kramer; Arnold M. Seligman; and Benjamin Witten

1966-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

.Research Module: Scheme 2. N-Benzylation of N-H Pyrazolidinones 3. 3 6. 60 Scheme 2 Procedure: N-Alkylation Using Aldehyde  

E-Print Network [OSTI]

folder. It will actually produce two NMR printouts for you. The first one will be dominated by methanol Scheme 1, add 10 mL of anhydrous methanol. · For 4-methoxy compoud 3c, add 20 mL of methanol, since the 4-Benzylation Synthesis of N-Benzyl Pyrazolidinones NH NH O R1 3a-e + H O 4 Methanol Solvent 0.05 CF3CO2H (catalyst) N N O

Jasperse, Craig P.

462

Process for using alkyl substituted C8-C10 aromatic hydrocarbons as preferential physical solvents for selective processing of hydrocarbon gas streams  

SciTech Connect (OSTI)

This patent describes a process for the removal of hydrocarbon gas liquids, comprising hydrocarbons heavier than methane, from a hydrocarbon gas stream. The improvement consists of selectively extracting the hydrocarbon gas liquids from the hydrocarbon gas stream with a preferential physical solvent which provides selective capability for recovery according to the selected degree of (a) ethane in amounts ranging from 2-98%, (b) propane in amounts ranging from 2-99%, (c) butane in amounts ranging from 2-100%, or (d) pentanes and higher molecular weight hydrocarbons in amounts ranging up to 100% which comprises: A. selectively extracting and stripping the hydrocarbon gas stream with the physical solvent to produce a residue hydrocarbon gas stream of pipeline specifications and a rich solvent stream containing ethane and heavier hydrocarbon components, the preferential physical solvent being: (1) rich in C/sub 8/-C/sub 10/ aromatic compounds having methyl, ethyl, or propyl aliphatic groups and (2) selective for ethane and heavier hydrocarbon components of the gas stream such that: (a) the relative volatility of methane over ethane is at least 5.0 and the hydrocarbon loading capacity, defined as solubility of ethane in solvent, is at least 0.25 standard cubic feet of ethane per gallon of solvent, or (b) the preferential factor determined by the multiplication of relative volatility of methane over ethane by the solubility of ethane in solvent, in standard cubic feet of ethane per gallon of solvent, of at least 1.25; and B. distilling the rich solvent to produce the hydrocarbon gas liquids and the physical solvent.

Mehra, Y.R.

1987-09-08T23:59:59.000Z

463

E-Print Network 3.0 - aryl bisdiazeniumdiolates potent Sample...  

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

of Hindered Alkyl-Aryl Ethers Thomas F. Woiwode... synthesis.2 Our retrosynthetic analysis of phomopsin A targeted the chiral tertiary alkyl-aryl ether... substitution (SNAr)...

464

Chem 350 Jasperse Ch. 6 Notes 1 Chem 350 Jasperse Ch. 6 Summary of Reaction Types, Ch. 4-6, Test 2  

E-Print Network [OSTI]

to racemic, due to achiral radical intermediate. Mech: Radical. Be able to draw propagation steps. 2. SN2 Nucleophile/Base. For 2º alkyl halides, SN2 is often accompanied by variable amounts of E2.) Predicting. Anionic Nucleophile/Base, and B. 3º or 2º alkyl halide (1º alkyl halides undergo SN2 instead. For 2º alkyl

Jasperse, Craig P.

465

Journal of Inclusion Phenomena and Macrocyclic Chemistry 36: 267277, 2000. 2000 Kluwer Academic Publishers. Printed in the Netherlands.  

E-Print Network [OSTI]

Publishers. Printed in the Netherlands. 267 Diffusion Evidence for a Stepwise Association Between Alkyl p

Loh, Watson

466

Method for producing microcomposite powders using a soap solution  

DOE Patents [OSTI]

A method for producing microcomposite powders for use in superconducting and non-superconducting applications. A particular method to produce microcomposite powders for use in superconducting applications includes the steps of: (a) preparing a solution including ammonium soap; (b) dissolving a preselected amount of a soluble metallic such as silver nitrate in the solution including ammonium soap to form a first solution; (c) adding a primary phase material such as a single phase YBC superconducting material in particle form to the first solution; (d) preparing a second solution formed from a mixture of a weak acid and an alkyl-mono-ether; (e) adding the second solution to the first solution to form a resultant mixture; (f) allowing the resultant mixture to set until the resultant mixture begins to cloud and thicken into a gel precipitating around individual particles of the primary phase material; (g) thereafter drying the resultant mixture to form a YBC superconducting material/silver nitrate precursor powder; and (h) calcining the YBC superconducting material/silver nitrate precursor powder to convert the silver nitrate to silver and thereby form a YBC/silver microcomposite powder wherein the silver is substantially uniformly dispersed in the matrix of the YBC material.

Maginnis, Michael A. (Coker, AL); Robinson, David A. (Mobile, AL)

1996-01-01T23:59:59.000Z

467

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

SciTech Connect (OSTI)

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

468

Hybrid biofuels from non-edible oils: A comparative standpoint with corresponding biodiesel  

Science Journals Connector (OSTI)

Abstract Exploration of new non-edible feedstocks for biofuel production and the use of economically favorable conversion technologies could significantly contribute to bioenergy research. In this regard the present investigation aims to highlighten hybrid biofuels (HBFs) prepared from crude vegetable oils of five locally available plant species namely, Gmelina arborea Roxb (GAO), Mimusops elengi Linn (MEO), Acer laurinum Hasskarl (ALO), Thevetia peruviana Schum (TPO) and Mesua ferrea Linn (MFO). This new approach does not involve any chemical reactions and can substantially reduce the production cost of vegetable oil based biofuels. Besides, the HBF systems prepared here can be 100% renewable as they only contain vegetable oil, butanol and ethanol, all products derived from biomass. The naturally occurring mono-, di-glycerides and free fatty acid (FFA)s in crude vegetable oils (or esters in pretreated oils) functioned as surfactants in the formulation of stable fuel systems. The fuel properties of the formulations were affected by the concentrations of these compounds in the vegetable oil. The optimum formulations (oil:butanol:ethanol ratio of 60:30:10) exhibited viscosity (4.7–5.4 mm2/s), density (0.86–0.88 gm/cm3) and gross calorific values (38.91–39.18 MJ/kg) comparable with their corresponding fatty acid methyl esters (FAMEs). Moreover, they show superior cold flow properties than FAMEs. The present investigation suggests that non-edible oil based HBF systems formulated in the study containing ‘bio-based’ and ‘green’ surface active agents in the system offers economically attractive candidature for the future biofuel industry.

Plaban Bora; Lakhya Jyoti Konwar; Jutika Boro; Mayur Mausoom Phukan; Dhanapati Deka; Bolin Kumar Konwar

2014-01-01T23:59:59.000Z

469

Effects of dispersion and partial reduction on the catalytic properties of Rh/Al sub 2 O sub 3 catalysts in the steam reforming of mono- and bicyclic aromatics  

SciTech Connect (OSTI)

The steam reforming of toluene, cumene, and methyl-1-naphthalene was studied on well-reduced Rh/Al{sub 2}O{sub 3} catalysts of different dispersions and on partially reduced catalysts in which the dispersion of the metallic phase was maintained at 25 {plus minus} 2%. The principal reactions were dehydrogenation DH (cumene {yields} {alpha}-methylstyrene), dealkylation DA (for instance, toluene {yields} benzene), naphthalene ring opening NRO (methylnaphthalene {yields} benzene + toluene), and degradations DN (total gasification of the molecules). Dispersion and partial reduction effects are shown to occur and can be summarized as follows: a partially reduced sample behaves catalytically as would dispersed and well-reduced catalysts. In this case, DN reactions are much inhibited, whereas DA and, to a lesser extent, NRO are relatively less affected by partial reduction. Moreover, DH is quite unaffected by these factors. The results may be expressed in terms of either electronic (DN favored on particles where the metal is more capable of donating electrons) or geometric effects (DN favored on a large ensemble of adjacent sites). These models are discussed on the basis of kinetic and XPS results, particularly those obtained on partially reduced Rh/Al{sub 2}O{sub 3} catalyst samples. Alloy effects (selectivities modified by the presence of RhAl alloy) could also occur on a catalyst calcined and reduced at high temperatures.

Delahay, G.; Duprez, D. (Universite de Poitiers (France))

1989-02-01T23:59:59.000Z

470

Toxic potential of non-ortho and mono-ortho coplanar PCBs in commercial PCB preparations: 2,3,7,8-T/sub 4/ CDD Toxicity Equivalence Factors Approach  

SciTech Connect (OSTI)

Identification of highly toxic polychlorinated dibenzofurans (PCDFs) in commercial PCBs has contributed to the belief that they play a major role in the PCB toxicity. However, Quantitative Structure Activity Relationship (QSAR) studies have indicated that PCB congeners with chlorine substitution at both para and two or more meta positions resemble 2,3,7,8-tetrachlorodibenzo-p-dioxin (T/sub 4/CDD) in their biologic and toxic effects due to their coplanarity. The relative toxic potential of these PCB isomers in wild animals such as Forster's tern, marine mammals and Snapping turtle has been emphasized. Some members of these toxic congeners were also identified and quantitated in commercial PCBs. However, there is no serious effort to evaluate the toxic potential of these PCB congeners in commercial PCB mixtures. Hence an isomer-specific toxic evaluation was attempted in those mixtures to understand the chemical factors behind their toxicity.

Kannan, N.; Tanabe, S.; Tatsukawa, R.

1988-08-01T23:59:59.000Z

471

Pilot-Scale Production of Fatty Acid Ethyl Esters by an Engineered Escherichia coli Strain Harboring the p(Microdiesel) Plasmid  

Science Journals Connector (OSTI)

...Bey, Alexandria, Egypt. Alexander Steinbuchel...produce FAEEs by its natural metabolism, and it...because of its low price; glycerol of sufficient...analyzed by TLC, gas chromatography (GC...cells, as analyzed by gas chromatography (data...shown). Analyses by gas chromatography (GC...

Yasser Elbahloul; Alexander Steinbüchel

2010-05-07T23:59:59.000Z

472

Pilot-Scale Production of Fatty Acid Ethyl Esters by an Engineered Escherichia coli Strain Harboring the p(Microdiesel) Plasmid  

Science Journals Connector (OSTI)

...and is even available from renewable sources as a byproduct of microbial...and could contribute to the energy market as a substitute for...engineered E. coli strain on renewable substrates such as hemicelluloses...56-81-5 Glycerol | Bioelectric Energy Sources Biomass Biotechnology...

Yasser Elbahloul; Alexander Steinbüchel

2010-05-07T23:59:59.000Z

473

Analysis of the phorbol ester pharmacophore on protein kinase C as a guide to the rational design of new classes of analogs  

Science Journals Connector (OSTI)

...tetrahydrofuran/ heat (22); f, AcCl...2NCH(OCH3)2/heat; i, H2NNHCONH2/2...spectroscopy and by combustion analysis. Assayed com...is also occupied by a hydrocarbon group that is now covalently...tetraalkylben- zocyclohexene (hydrocarbon) residue of teleocidin...

P A Wender; K F Koehler; N A Sharkey; M L Dell'Aquila; P M Blumberg

1986-01-01T23:59:59.000Z

474

Effect of Phorbol Ester on Growth of Tumors Induced by Rous Sarcoma Virus and on pp60src Kinase Activity in These Tumors  

Science Journals Connector (OSTI)

...Medical Research Council of Canada. Louise Poulin 2 Violetta Skalski Mark A. Wainberg 3...Kinase Activity in These Tumors1 Louise Poulin,2 Violetta Skalski, and Mark A. Wainberg3...USA, 77:1311-1315, 1980. 10. Poulin, L., (.rise Minni, L., and Wainberg...

Louise Poulin; Violetta Skalski; Mark A. Wainberg

1987-07-15T23:59:59.000Z

475

Effect of Fuel Injection Timing on the Emissions of a Direct-Injection (DI) Diesel Engine Fueled with Canola Oil Methyl Ester?Diesel Fuel Blends  

Science Journals Connector (OSTI)

(3, 4) A lot of researchers have reported that using biodiesel as a fuel in diesel engines causes a diminution in harmful exhaust emissions as well as equivalent engine performance with diesel fuel. ... Engine tests have been carried out with the aim of obtaining comparative measures of torque, power, specific fuel consumption and emissions such as CO, smoke d. and NOx to evaluate and compute the behavior of the diesel engine running on the above-mentioned fuels. ... Ma, Z.; Huang, Z. H.; Li, C.; Wang, X. B.; Miao, H.Effects of fuel injection timing on combustion and emission characteristics of a diesel engine fueled with diesel?propane blends Energy Fuels 2007, 21 ( 3) 1504– 1510 ...

Cenk Sayin; Metin Gumus; Mustafa Canakci

2010-03-11T23:59:59.000Z

476

Involvement of the transcription factor NF-IL6 in phorbol ester induction of P-glycoprotein in U937 cells  

Science Journals Connector (OSTI)

...binding protein a expression in the gut epithelium of normal and transgenic mice. Proc. Natl. Acad. Sd. USA, 90: 8871-9975, 1993. 19. Piontkewitz, V., Enerback, S., and Hedin, L Expression and hormonal regulation of the CCMT enhancer binding...

NJ Combates; PO Kwon; RW Rzepka; D Cohen

1997-02-01T23:59:59.000Z

477

Solid State Nuclear Magnetic Resonance Investigation of Polymer Backbone Dynamics in Poly(Ethylene Oxide) Based Lithium and Sodium Polyether-ester-sulfonate Ionomers  

SciTech Connect (OSTI)

Polymer backbone dynamics of single ion conducting poly(ethylene oxide) (PEO)-based ionomer samples with low glass transition temperatures (Tg) have been investigated using solid-state nuclear magnetic resonance (NMR). Experiments detecting 13C with 1H decoupling under magic angle spinning (MAS) conditions identified the different components of the polymer backbone (PEO spacer and isophthalate groups) and their relative mobilities for a suite of lithium- and sodium-containing ionomer samples with varying cation contents. Variable temperature (203-373 K) 1H-13C cross-polarization MAS (CP-MAS) experiments also provided qualitative assessment of the differences in the motions of the polymer backbone components as a function of cation content and identity. Each of the main backbone components exhibit distinct motions, following the trends expected for motional characteristics based on earlier Quasi Elastic Neutron Scattering and 1H spin-lattice relaxation rate measurements. Previous 1H and 7Li spin-lattice relaxation measurements focused on both the polymer backbone and cation motion on the nanosecond timescale. The studies presented here assess the slower timescale motion of the polymer backbone allowing for a more comprehensive understanding of the polymer dynamics. The temperature dependences of 13C linewidths were used to both qualitatively and quantitatively examine the effects of cation content and identity on PEO spacer mobility. Variable contact time 1H-13C CP-MAS experiments were used to further assess the motions of the polymer backbone on the microsecond timescale. The motion of the PEO spacer, reported via the rate of magnetization transfer from 1H to 13C nuclei, becomes similar for T ? 1.1 Tg in all ionic samples, indicating that at similar elevated reduced temperatures the motions of the polymer backbones on the microsecond timescale become insensitive to ion interactions. These results present an improved picture, beyond those of previous findings, for the dependence of backbone dynamics on cation density (and here, cation identity as well) in these amorphous PEO-based ionomer systems.

Roach, David J. [Penn State Univ., State College, PA (United States). Dept. of Chemistry; Dou, Shichen [Penn State Univ., State College, PA (United States). Dept. of Materials Science and Engineering; Colby, Ralph H. [Penn State Univ., State College, PA (United States). Dept. of Materials Science and Engineering; Mueller, Karl T. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Penn State Univ., State College, PA (United States). Dept. of Chemistry

2013-05-21T23:59:59.000Z

478

I. Pt-Catalyzed Tandem Epoxide Fragmentation/Pentannulation of Propargylic Esters II. Progress Toward the Kopsia Family of Indole Alkaloids  

E-Print Network [OSTI]

Selected Spectra Chapter 3: An Ugi Four-Component Couplinglapidilectine B based on an Ugi four-component coupling isdescribed. The Ugi reaction incorporates all the carbon

Pujanauski, Brian Gerard

2010-01-01T23:59:59.000Z

479

Radial-Basis-Function-Network-Based Prediction of Performance and Emission Characteristics in a Bio Diesel Engine Run on WCO Ester  

E-Print Network [OSTI]

Radial basis function neural networks (RBFNNs), which is a relatively new class of neural networks, have been investigated for their applicability for prediction of performance and emission characteristics of a diesel ...

Kumar, Shiva

2012-01-01T23:59:59.000Z

480

Analysis of the phorbol ester pharmacophore on protein kinase C as a guide to the rational design of new classes of analogs  

Science Journals Connector (OSTI)

...was used. Binding data were expressed relative...tetrahydrofuran/ heat (22); f, AcCl...2NCH(OCH3)2/heat; i, H2NNHCONH2...spectroscopy and by combustion analysis. Assayed...also occupied by a hydrocarbon group that is now...zocyclohexene (hydrocarbon) residue of teleocidin...

P A Wender; K F Koehler; N A Sharkey; M L Dell'Aquila; P M Blumberg

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mono alkyl ester" 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

Crystal structure of N-(tert-but­oxy­carbon­yl)phenyl­alanylde­hydro­alanine isopropyl ester (Boc-Phe-Ala-OiPr)  

Science Journals Connector (OSTI)

In the crystal structure of the de­hydro­dipeptide (Boc-Phe-Ala-OiPr), the mol­ecule has a trans configuration of the N-methyl­amide group. Its geometry is different from saturated peptides but is in excellent agreement with other de­hydro­alanine compounds. In the crystal, an N-HO hydrogen bond links the mol­ecules in a herringbone packing arrangement.

Lenartowicz, P.

2014-11-29T23:59:59.000Z

482

Chapter 104 - Sphingolipid Disorders and the Neuronal Ceroid Lipofuscinoses or Batten Disease (Wolman Disease, Cholesteryl Ester Storage Disease, and Cerebrotendinous Xanthomatosis)  

Science Journals Connector (OSTI)

This article is a revision of the previous edition article by Rose-Mary Boustany, Talal Mousallem, volume 3, pp 2449–2485, © 2007, Elsevier Ltd. Advances have been made in the sphingolipidoses and the many forms of Batten disease. Defects in sphingolipid synthetic enzymes and new Batten genes are identified. There is improved understanding of genetic diseases. Enzyme replacement/substrate reduction therapy are proving beneficial. Chaperones raise residual enzyme activities. Drugs affecting biochemical processes are emerging. Presymptomatic bone marrow replacement benefits certain sphingolipidoses. Viral gene therapies are encouraging in animal models Neural/non-neural stem cell therapies are under study. Efficient enzyme delivery into brain of animals/humans is being developed. These novel interventions are imperfect, and medicine is complex. Screening programs/genetic counseling/prenatal diagnosis remain the mainstays of prevention.

Rose-Mary Boustany; Ibraheem Al-Shareef; Sariah El-Haddad

2013-01-01T23:59:59.000Z

483

Experimental investigations of the performance, emission and combustion characteristics of a biodiesel (ethyl ester of fish oil) fuelled direct-injection diesel engine  

Science Journals Connector (OSTI)

The thirst for fuel is steadily increasing as technology continues to open new areas of exploration. At the same time, the indiscriminate extraction of fossil fuels may also result in pollutant emissions which cause major impacts on ecological systems. In order to overcome the above problems, a suitable biodiesel should be used to replace the diesel fuel. Hence, in this work, feasibility of using biodiesel prepared from fish oil was investigated. Experimental tests were carried out to evaluate the performance, emission and combustion characteristics of a single cylinder, constant speed engine using several blends under variable load conditions. It was found that NOx, HC and CO emission was reduced for blends along with a marginal increase of brake thermal efficiency and smoke. The ignition delay and maximum heat release rate were reduced compared to diesel. Ultimately, fish oil can indeed become the appropriate source for biodiesel with environmental benefits.

G. Sakthivel; G. Nagarajan; M. Ilangkumaran

2013-01-01T23:59:59.000Z

484

Down-regulation of four putative arabinoxylan feruloyl transferase genes from family PF02458 reduces ester-linked ferulate content in rice cell walls  

E-Print Network [OSTI]

to ethanol is the inaccessibility of cellulose andto ethanol is the inaccessibility of the cellulose andthe cellulose ?bers, but add additional costs to the ethanol

Piston, Fernando; Uauy, Cristobal; Fu, Lianhai; Langston, James; Labavitch, John; Dubcovsky, Jorge

2010-01-01T23:59:59.000Z

485

Determination of Six Phthalic Acid Esters in Orange Juice Packaged by PVC Bottle Using SPE and HPLC-UV: Application to the Migration Study  

Science Journals Connector (OSTI)

......blank orange juice. Quality control (QC) samples...couldbedetectedoutinthethirdmonth.They would increase with the storage time...orange juice samples would increase with the storage time...exposures with semen quality. Toxicol. Appl. Pharm...Determination of phthalates in wine by headspace solid-phase......

Zhiyong Guo; Danyi Wei; Meili Wang; Sui Wang

2010-10-01T23:59:59.000Z

486

The Genome Sequence of Psychrobacter arcticus 273-4, a Psychroactive Siberian Permafrost Bacterium, Reveals Mechanisms for Adaptation to Low-Temperature Growth  

Science Journals Connector (OSTI)

...important factor in cold adaptation is the synthesis of wax esters. Wax esters are commonly found in plants and animals (30). Acinetobacter sp. accumulates large amounts of wax esters that are used later as a carbon source for growth...

Héctor L. Ayala-del-Río; Patrick S. Chain; Joseph J. Grzymski; Monica A. Ponder; Natalia Ivanova; Peter W. Bergholz; Genevive Di Bartolo; Loren Hauser; Miriam Land; Corien Bakermans; Debora Rodrigues; Joel Klappenbach; Dan Zarka; Frank Larimer; Paul Richardson; Alison Murray; Michael Thomashow; James M. Tiedje

2010-02-12T23:59:59.000Z

487

Membrane Stresses Induced by Overproduction of Free Fatty Acids in Escherichia coli.  

SciTech Connect (OSTI)

Microbially produced fatty acids are potential precursors to high energy density biofuels, including alkanes and alkyl ethyl esters by either catalytic conversion of free fatty acids (FFAs) or enzymatic conversions of acyl-acyl carrier protein or acyl-coenzyme A intermediates. Metabolic engineering efforts aimed at overproducing FFAs in Escherichia coli have achieved less than 30% of the maximum theoretical yield on the supplied carbon source. In this work, the viability, morphology, transcript levels, and protein levels of a strain of E. coli that overproduces medium chain length FFAs was compared to an engineered control strain. By early stationary phase, an 85% reduction in viable cell counts and exacerbated loss of inner membrane integrity were observed in the FFA overproducing strain. These effects were enhanced in strains endogenously producing FFAs compared to strains exposed to exogenously fed FFAs. Under two sets of cultivation conditions, long chain unsaturated fatty acid content greatly increased and the expression of genes and proteins required for unsaturated fatty acid biosynthesis were significantly decreased. Membrane stresses were further implicated by increased expression of genes and proteins of the phage shock response, the MarA/Rob/SoxS regulon, and the nuo and cyo operons of aerobic respiration. Gene deletion studies confirmed the importance of the phage shock proteins and Rob for maintaining cell viability, however little to no change in FFA titers was observed after 24 h cultivation. The results of this study serve as a baseline for future targeted attempts to improve FFA yields and titers in E. coli.

Lennen, Rebecca M.; Kruziki, Max A.; Kumar, Kritika; Zinkel, Robert A.; Burnum, Kristin E.; Lipton, Mary S.; Hoover, Spencer W.; Ranatunga, Don Ruwan; Wittkopp, Tyler M.; Marner II, Wesley D.; Pfleger, Brian F.

2011-11-01T23:59:59.000Z

488

The Effect of Temperature, Cations, and Number of Acyl Chains on the Lamellar to Non-Lamellar Transition in Lipid-A Membranes: A Microscopic View  

SciTech Connect (OSTI)

Lipopolysaccharides (LPS) are the main constituent of the outer bacterial membrane of Gram-negative bacteria. Lipid-A is the structural region of LPS that interacts with the innate immune system and induces inflammatory responses. It is formed by a phosphorylated ?-d-glucosaminyl-(1?6)-?-N-glucosamine disaccharide backbone containing ester-linked and amide-linked long-chain fatty acids, which may vary in length and number depending on the bacterial strains and the environment. Phenotypical variation (i.e., number of acyl chains), cation type, and temperature influence the phase transition, aggregate structure, and endotoxic activity of Lipid-A. We have applied an extension of the GROMOS force field 45a4 carbohydrate parameter set to investigate the behavior of hexa- and pentaacylated Lipid-A of Pseudomonas aeruginosa at two temperatures (300 and 328 K) and in the presence of mono- and divalent cations (represented by Ca2+ and Na+, respectively) through molecular dynamics simulations. The distinct phase of Lipid-A aggregates was characterized by structural properties, deuterium order parameters, the molecular shape of the lipid units (conical versus cylindrical), and molecular packing. Our results show that Na+ ions induce a transition from the lamellar to nonlamellar phase. In contrast, the bilayer integrity is maintained in the presence of Ca2+ ions. Through these findings, we present microscopic insights on the influence of different cations on the molecular behavior of Lipid-A associated with the lamellar to nonlamellar transition.

Pontes, Frederico J.; Rusu, Victor H.; Soares, Thereza A.; Lins, Roberto D.

2012-05-24T23:59:59.000Z

489

Spectroscopic Approaches for Phosphorus Speciation in Soils and other Environmental Systems  

SciTech Connect (OSTI)

In the past decades, environmental scientists have become increasingly involved in developing novel approaches for applying emerging spectroscopic techniques to complex environmental matrices. The objective of this review is to convey the most common chemical species of phosphorus reported for soils, sediments, model systems, and waste materials based on analyses by four spectroscopic techniques: X-ray absorption near-edge structure, nuclear magnetic resonance, Fourier transform infrared spectroscopy, and Raman spectroscopy. Unique information is provided by each technique at a level of specificity that depends in part on matrix complexity. The X-ray absorption near-edge structure and nuclear magnetic resonance techniques reveal inorganic and organic P species in intact environmental matrices or in chemical extracts, whereas the Fourier transform infrared and Raman techniques can provide more specific bonding information about mineral or adsorbed P species in model analogs of matrix components. The most common P species in soils and sediments as indicated by spectroscopy are hydroxyapatite and octacalcium phosphate minerals, phosphate adsorbed on Fe- and Al-oxides, pyrophosphates and polyphosphates, phosphate mono- and di-esters, and phosphonates. Continued advancements in spectroscopic methods should improve speciation-based models of P mobilization and transformations in the environment.

F Kizewski; A Morris; Y Liu; D Hesterberg

2011-12-31T23:59:59.000Z

490

Studies on dual fuel engine performance and exhaust emission analysis by response surface methodology  

Science Journals Connector (OSTI)

In this present study a five factor three level Box-Behnken response surface design was used to study the effect of five independent variables such as diesel (40%–100%) ethanol (0%-30%) pongamia oil methyl ester (POME) (0%–30%) compressed natural gas (CNG) (0%–20%) and load of the engine (0%–100%) on the performance (brake thermal efficiency brake specific fuel consumption and exhaust gas temperature) and emission characteristics (carbon mono-oxide (CO) carbon dioxides (CO2) unburnt hydrocarbon oxides of nitrogen (NOX) and smoke) of a single cylinder four stroke water cooled diesel engine converted to dual fuel system. It was operated with either diesel fuel or blend with CNG using an electronically controlled solenoid actuated valve mechanism. The experimental results showed that all the process variables have significant effect on the engine performance. The emission characteristics (CO CO2 NOX and Smoke) were significantly lower than the diesel fuel emissions. From the experimental results second order polynomial models were developed to predict the response variables. The optimal conditions were determined and it was found to be: Diesel 70% Ethanol 15% POME 15% CNG 10% and load 50% respectively with a desirability value of 0.894.

R. Senthilraja; V. Sivakumar; J. Prakash Maran

2014-01-01T23:59:59.000Z

491

Oligomeric Dithienopyrrole-Thienopyrrolodione (DTP-TPD) Donor-Acceptor Copolymer for Organic Photovoltaics: Preprint  

SciTech Connect (OSTI)

A new donor-acceptor copolymer system based upon a dithienopyrrole (DTP) donor moiety and a thienopyrrolodione (TPD) accepting moiety has been designed and synthesized for organic photovoltaic (OPV) applications. The TPD accepting moiety has recently gained significant attention in the OPV community and is being incorporated into a number of different polymer systems. In contrast, the DTP donor moiety has received only limited attention, likely due in part to synthetic difficulties relating to the monomer. In our hands, the bis(trimethyltin)-DTP monomer was indelibly contaminated with ~5% of the mono-destannylated DTP, which limited the Stille polymerization with the dibromo-TPD monomer (>99% pure) to produce material with Mn ~ 4130 g/mol (PDI = 1.10), corresponding to around eight repeat units. Despite this limitation, UV-visible absorption spectroscopy demonstrates strong absorption for this material with a band gap of ~1.6 eV. Cyclic voltammetry indicates a highest occupied molecular orbital (HOMO) energy level of -5.3 eV, which is much lower than calculations predicted. Initial bulk heterojunction OPV devices fabricated with the fullerene acceptor phenyl C61 butyric acid methyl ester (PCBM) exhibit Voc ~ 700 mV, which supports the deep HOMO value obtained from CV. These results suggest the promise of this copolymer system.

Hammond, S. R.; Braunecker, W.; Garcia, A.; Larsen, R.; Owczarczyk, Z.; Olson, D.; Ginley, D.

2011-07-01T23:59:59.000Z

492

Nonsteroidal Selective Glucocorticoid Modulators:? the Effect of C-5 Alkyl Substitution on the Transcriptional Activation/Repression Profile of 2,5-Dihydro-10-methoxy-2,2,4-trimethyl-1H-[1]benzopyrano[3,4-f]quinolines  

Science Journals Connector (OSTI)

Steven W. Elmore ,*† Michael J. Coghlan ,† David D. Anderson ,† John K. Pratt ,† Brian E. Green ,† Alan X. Wang ,† Michael A. Stashko ,† Chun W. Lin ,† Curtis M. Tyree ,‡ Jeffery N. Miner ,‡ Peer B. Jacobson ,† Denise M. Wilcox ,† and Benjamin C. Lane † ... Coghlan, Michael J.; Kym, Philip R.; Elmore, Steven W.; Wang, Alan X.; Luly, Jay R.; Wilcox, Denise; Stashko, Michael; Lin, Chun-Wei; Miner, Jeffrey; Tyree, Curtis; Nakane, Masaki; Jacobson, Peer; Lane, Benjamin C. ...

Steven W. Elmore; Michael J. Coghlan; David D. Anderson; John K. Pratt; Brian E. Green; Alan X. Wang; Michael A. Stashko; Chun W. Lin; Curtis M. Tyree; Jeffery N. Miner; Peer B. Jacobson; Denise M. Wilcox; Benjamin C. Lane

2001-11-10T23:59:59.000Z

493

DNA sequence–selective adenine alkylation, mechanism of adduct repair, and in vivo antitumor activity of the novel achiral seco-amino-cyclopropylbenz[e]indolone analogue of duocarmycin AS-I-145  

Science Journals Connector (OSTI)

...produced by Streptomyces sp. TP-A0356. J Antibiot (Tokyo...2946-60. 15 Weiland KL, Dooley TP. In vitro and in vivo bonding...biological evaluation of seco-iso-cyclopropylfurano[2,3e]indoline (seco-iso-CFI) and seco-cyclopropyltetrahydrofurano...

Konstantinos Kiakos; Atsushi Sato; Tetsuji Asao; Peter J. McHugh; Moses Lee; and John A. Hartley

2007-10-01T23:59:59.000Z

494

Novel -Distonic Radical Cations [CnH2n+2S]+ (n ) 2, 3) Formed upon Decarbonylation of Ionized S-Alkyl Thioformates: A Mass Spectrometric and ab Initio Study  

E-Print Network [OSTI]

ions. Strong evidence for the distonic nature of the fragment ions derived from 2-7·+ has been obtained to intense peaks corresponding to H2S·+ and ionized olefins. Portions of the potential energy surface related explored in the gas phase by a variety of mass spectral methods.2,3 In particular, the -distonic isomer

Nguyen, Minh Tho

495

Composite layer formation on plastic substrates for flexible display by using functionalized nanoclay  

Science Journals Connector (OSTI)

Polymer/nanoclay composite layers were formed by a UV-...+-MMT) was modified for intercalation by cationic surfactants having various alkyl chain lengths. Increase of alkyl chain length achieved more intercalatio...

Min Jeong Kim; Hyun Gi Kim; Sung Soo Kim

2012-07-01T23:59:59.000Z

496

Stand structure and establishment process of an old-growth stand in the mixed deciduous broadleaf/conifer forest of Mt. Moiwa Forest Reserve, central Hokkaido, Northern Japan  

Science Journals Connector (OSTI)

Stand structure of an old-growth forest was studied by tree (?4.0 ... in total) located in the Mt. Moiwa Forest Reserve, central Hokkaido, northern Japan. Major...Acer mono, A. mono var.mayrii, Kalopanax pictus, ...

Kanji Namikawa; Yuki Kawai

1998-11-01T23:59:59.000Z

497

Gas Chromatography Combined with Mass Spectrometry for the Identification of Organic Sulfur Compounds in Shellfish and Fish  

Science Journals Connector (OSTI)

......oysters from a loca- tion in Galveston Bay, Texas contained mono-, di-, triaroma...oysters from a location in Galveston Bay, Texas contained mono-, di-, triaromatic...hydrocarbons in oysters from Galveston Bay. Environ. Pollut. 3......

Masana Ogata; Yoshio Miyake

1980-11-01T23:59:59.000Z

498

Weekly Petroleum Status Report  

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

5 5 Alcohol. The family name of a group of organic chemical compounds composed of carbon, hydrogen, and oxygen. The series of molecules vary in chain length and are composed of a hydrocarbon plus a hydroxyl group; CH3-(CH2)n-OH (e.g., methanol, ethanol, and tertiary butyl alcohol). Alkylate. The product of an alkylation reaction. It usually refers to the high octane product from alkylation units. This alkylate is used in

499

Effect of modifier Pd metal on hydrocracking of polyaromatic compounds over Ni-loaded Y-type zeolite and its application as hydrodesulfurization catalysts  

SciTech Connect (OSTI)

Coal tar obtained from coal carbonization is a treasure of polyaromatic hydrocarbons, where more than 400 kinds of aromatic compounds are found to be contained. The development of new catalysts being able to convert these aromatics into mono or diaromatic compounds is one of objectives for utilization of polyaromatics. Hydrocracking of polyaromatic compounds is believed to proceed via formation of terminal-naphthenic ring of starting aromatic compounds, followed by cleavage of the naphthenic ring to produce alkylated aromatic compounds which has less numbers of ring than starting aromatics. Accordingly, hydrogenation of aromatic rings and cracking of resulting naphthenic rings are key steps of hydrocracking reaction, so that dual functional catalysts such as metal-supported acid catalysts are considered to be one of the best catalysts. Zeolite has controlled pore structures and strong acidity enough to crack naphthenic rings, being characteristics in exchanging metal species with ease. We have been studying the hydrocracking of polyaromatic compounds over Ni-loaded zeolite catalysts (ZSM-5, mordenite, and Y-type) and found the fact that pore size of zeolite exerts an interesting effect on product distribution. We also conducted computer-simulation for diffusion phenomena of the polyaromatic hydrocarbons in the pore of these zeolites and found that diffusion ability of the substrate affects strongly the product distributions Recently we found that modifying of Ni-loaded Y-type zeolite by Pd-loading enhanced hydrocracking ability of the catalyst. In this report, we would like to refer to the results of both hydrocracking reaction of pyrene and hydrodesulfurization of dibenzothiophene using Pd-modified Ni-loaded Y-type zeolite.

Wada, Takema; Murata, Satoru; Nomura, Masakatsu [Osaka Univ. (Japan)

1995-12-31T23:59:59.000Z

500

Synthesis and Characterization of Beef Tallow Biodiesel  

Science Journals Connector (OSTI)

Synthesis and Characterization of Beef Tallow Biodiesel ... fatty acid esters and natural biodiesels. ...

Bruno Quirino Araújo; Rafael Cavalcante da Rocha Nunes; Carla Verônica Rodarte de Moura; Edmilson Miranda de Moura; Antônia Maria das Graças Lopes Citó; José Ribeiro dos Santos Júnior

2010-07-15T23:59:59.000Z