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Note: This page contains sample records for the topic "molecule ethylene carbonate" 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
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1

Electronic States of Ethylene Molecule  

Science Journals Connector (OSTI)

......research-article Articles Electronic States of Ethylene Molecule Tomokazu Murai Department of...Kyoto University Electronic states of ethylene molecules are discussed according to the...Rev. (1930) 36. 51[APS] . 7) Price W. C. , Tutte W. T. Proc. R. Soc......

Tomokazu Murai

1952-04-01T23:59:59.000Z

2

Fumigation with the Liquid Fumigants Carbon Tetrachloride, Ethylene Dichloride and Ethylene Dibromide  

E-Print Network [OSTI]

Fumigation with the Liquid Fumigants Carbon Tetrachloride, Ethylene Dichloride and Ethylene Dibromide...

Anonymous

1966-01-01T23:59:59.000Z

3

Coadsorption of hydrogen and ethylene, and carbon monoxide and ethylene on the Ru(001) surface  

SciTech Connect (OSTI)

A detailed investigation of the coadsorption of ethylene with both preadsorbed hydrogen and preadsorbed carbon monoxide on the Ru(001) surface is reported here. Both preadsorbed hydrogen and carbon monoxide reduce the saturation coverage of subsequently chemisorbed ethylene. The coadsorption of hydrogen with ethylene results in detectable hydrogenation of ethylene to ethane below 250 K, whereas no self-hydrogenation of ethylene to ethane is observed. High-resolution electron energy loss spectra show that ethylene coadsorbed with either hydrogen or carbon monoxide decomposes to ethylidyne (CCH/sub 3/) and acetylide (CCH), as it does on the clean surface. Carbon monoxide preadsorption enhances the stability of the ethylidyne such that it decomposes at approximately 420 K, rather than 355 K as on the initially clean Ru(001) surface. Preadsorbed carbon monoxide also reduces the ratio of ethylidyne to acetylide that is formed from ethylene, compared to the ratio observed from an equivalent coverage of ethylene on the clean surface; hydrogen preadsorption, on the other hand, increases this ratio.

Hills, M.M.; Parmeter, J.E.; Weinberg, W.H.

1986-11-12T23:59:59.000Z

4

Terpolymerization of ethylene, sulfur dioxide and carbon monoxide  

DOE Patents [OSTI]

This invention relates to a high molecular weight terpolymer of ethylene, sulfur dioxide and carbon monoxide stable to 280.degree. C. and containing as little as 36 mol % ethylene and about 41-51 mol % sulfur dioxide; and to the method of producing said terpolymer by irradiation of a liquid and gaseous mixture of ethylene, sulfur dioxide and carbon monoxide by means of Co-60 gamma rays or an electron beam, at a temperature of about 10.degree.-50.degree. C., and at a pressure of about 140 to 680 atmospheres, to initiate polymerization.

Johnson, Richard (Shirley, NY); Steinberg, Meyer (Huntington Station, NY)

1981-01-01T23:59:59.000Z

5

Ethylene ame synthesis of well-aligned multi-walled carbon nanotubes  

E-Print Network [OSTI]

Ethylene ¯ame synthesis of well-aligned multi-walled carbon nanotubes Liming Yuan a , Kozo Saito a and curved shape multi-walled carbon nanotubes (MWNTs) were harvested from an ethylene±air diusion ¯ame applied to the nitrogen-diluted ethylene diusion ¯ame; well-aligned and well-graphitized carbon nanotubes

Chen, Zhi

6

Evidence for Epoxide Formation from the Electrochemical Reduction of Ethylene Carbonate  

E-Print Network [OSTI]

Evidence for Epoxide Formation from the Electrochemical Reduction of Ethylene Carbonate Xuerong agreed that the electrochemical reduction of ethylene carbonate EC plays an important role the monoethylcarbonate lithium salt. Ethylene oxide is suggested as a possible, but not exclusive, reduction product

7

The formation of carbon nanofibers and thin films from the catalytic decomposition of ethylene by palladium.  

E-Print Network [OSTI]

??It has been demonstrated that palladium can be an exceptional catalyst toward the deposition of solid carbon from ethylene in two distinct forms: nanofibers and (more)

Atwater, Mark A.

2010-01-01T23:59:59.000Z

8

Deposition of carbon films by electrolysis of a water-ethylene glycol solution  

Science Journals Connector (OSTI)

An attempt was made to deposit carbon films by electrolysis of a water-ethylene glycol solution. Carbon plate and an...n...-type silicon substrate were dipped in the solution and a high d.c. potential was negativ...

T. Suzuki; Y. Manita; T. Yamazaki; S. Wada; T. Noma

1995-04-15T23:59:59.000Z

9

Amorphous silicon-carbon alloys and amorphous carbon from direct methane and ethylene activation by ECR  

SciTech Connect (OSTI)

Hydrogenated amorphous silicon-carbon alloys are prepared using electron-cyclotron resonance (ECR) plasma-enhanced chemical vapor deposition. Hydrogen is introduced into the source resonance cavity as an excitation gas. Silane is introduced in the main chamber in the vicinity of the plasma stream, whereas the carbon source gases, methane or ethylene, are introduced either with the silane or with the hydrogen as excitation gases. The effect of the type of carbon-source gas, excitation gas mixture and silane-to-carbon source gas flow ratio on the deposition rate, bandgap, subgap density of states, spin density and hydrogen evolution are studied.

Conde, J.P.; Chu, V.; Giorgis, F.; Pirri, C.F.; Arekat, S.

1997-07-01T23:59:59.000Z

10

Scaffolding Carbon Nanotubes into Single-Molecule Circuitry  

E-Print Network [OSTI]

Three-terminal, single molecule circuits based on carbonHowever, reliable single- molecule devices remainnew architecture for studying single- molecule behavior that

Collins, Philip G

2007-01-01T23:59:59.000Z

11

Scaffolding Carbon Nanotubes into Single-Molecule Circuitry  

E-Print Network [OSTI]

Carbon Nanotubes into Single-Molecule Circuitry Brett R.to a single binding site, single molecule precision can beto directly transduce single-molecule interactions such as

Collins, Philip G

2007-01-01T23:59:59.000Z

12

Anodic polymerization of vinyl ethylene carbonate in Li-Ion battery electrolyte  

E-Print Network [OSTI]

Ethylene Carbonate in Li-Ion Battery Electrolyte Guoyingof a commercial Li-ion battery electrolyte containing 2 %are an important part of Li-ion battery technology yet their

Chen, Guoying; Zhuang, Guorong V.; Richardson, Thomas J.; Gao, Liu; Ross Jr., Philip N.

2005-01-01T23:59:59.000Z

13

Scaffolding Carbon Nanotubes into Single-Molecule Circuitry  

E-Print Network [OSTI]

carbon nanotubes as single-molecule biosensors. Nano Lett.1990). S.N. Xie: Single-molecule approach to enzymology.improvements to the single molecule oxidation of carbon

Collins, Philip G

2008-01-01T23:59:59.000Z

14

Scaffolding Carbon Nanotubes into Single-Molecule Circuitry  

E-Print Network [OSTI]

tion of individual carbon nanotubes. Nano Lett. 3, 613 (C. Dekker: Enzyme-coated carbon nanotubes as single-moleculeing point defects in carbon nanotubes. Nat. Mater. 4, 906 (

Collins, Philip G

2008-01-01T23:59:59.000Z

15

Surface-supported Ag islands stabilized by a quantum size effect: Their interaction with small molecules relevant to ethylene epoxidation  

SciTech Connect (OSTI)

This dissertation focuses on how QSE-stabilized, surface-supported Ag nanoclusters will interact with ethylene or oxygen. Experiments are performed to determine whether the QSE-mediated Ag islands react differently toward adsorption of ethylene or oxygen, or whether the adsorption of these small molecules will affect the QSE-mediated stability of Ag islands. Studies of the interaction of oxygen with Ag/Si(111)-77 were previously reported, but these studies were performed at a low Ag coverage where 3D Ag islands were not formed. So the study of such a system at a higher Ag coverage will be a subject of this work. The interaction of ethylene with Ag/Si(111)-77, as well as the interaction of oxygen with Ag/NiAl(110) are also important parts of this study.

Shao, Dahai

2013-05-15T23:59:59.000Z

16

Ethylene Insensitivity in Maize: Analysis of Ethylene Receptors and the Ethylene Response in Maize  

E-Print Network [OSTI]

and Ecker, J.R. (2002) Ethylene Biosynthesis and Signalingand Kende, H. (2000) Ethylene: a gaseous signal molecule inE.M. (1993) Arabidopsis Ethylene- Response Gene ETR1:

Chen, Juifen

2011-01-01T23:59:59.000Z

17

Effects of {pi}-stacking interactions on the near carbon K-edge x-ray absorption fine structure: A theoretical study of the ethylene pentamer and the phthalocyanine dimer  

SciTech Connect (OSTI)

X-ray absorption spectra have been determined for ethylene and free base phthalocyanine at the carbon K-edge with use of the complex polarization propagator method combined with Kohn-Sham density functional theory and the Coulomb attenuated method B3LYP exchange-correlation functional. Apart from isolated molecules, the study includes {pi}-stacked systems of the phthalocyanine dimer and the ethylene dimer, trimer, tetramer, and pentamer. For ethylene, {pi}-stacking involves a reduction in transition energy of the valence {pi}*-band by some 70 meV and large spectral changes (regarding also shape and intensity) of the Rydberg bands. For phthalocyanine, there are large spectral changes in the entire valence {pi}*-part of the spectrum.

Linares, Mathieu; Stafstroem, Sven; Norman, Patrick [Department of Physics, Chemistry and Biology, Linkoeping University, SE-581 83 Linkoeping (Sweden)

2009-03-14T23:59:59.000Z

18

Dissecting Single-Molecule Signal Transduction in Carbon Nanotube Circuits with Protein Engineering  

E-Print Network [OSTI]

Dissecting Single-Molecule Signal Transduction in Carbon Nanotube Circuits with Protein Engineering Supporting Information ABSTRACT: Single-molecule experimental methods have provided new insights measurements. A novel, non uorescent single-molecule technique involves attaching single molecules to single

Weiss, Gregory A.

19

Poly(ethylene oxide) Crystallization in Single Walled Carbon Nanotube Based Nanocomposites: Kinetics and Structural Consequences  

SciTech Connect (OSTI)

The overall isothermal crystallization behavior of poly(ethylene oxide) (PEO) in single walled carbon nanotube (SWNT) based nanocomposites is studied with a focus on growth kinetics and morphological evolution of PEO using differential scanning calorimetry and in-situ small angle x-ray scattering measurements respectively. The characteristic time for crystallization of PEO increases due to the presence of lithium dodecyl sulfate (LDS) stabilized carbon nanotubes. Further, analysis of crystallization data using the Lauritzen-Hoffman regime theory of crystal growth shows the PEO chains stiffen in presence of LDS with an increased energy barrier associated with the nucleation and crystal growth, and the nanotubes further act as a barrier to chain transport or enhance the efficacy of the LDS action. The energy penalty and diffusional barrier to chain transport in the nanocomposites disrupt the crystalline PEO helical conformation. This destabilization leads to preferential growth of local nuclei resulting in formation of thinner crystal lamellae and suggests that the crystallization kinetics is strongly affected by the nucleation and crystal growth events. This study is particularly interesting considering the suppression of the PEO crystallinity in presence of small fraction of Lithium ion based surfactant and carbon nanotubes.

T Chatterjee; A Lorenzo; R Krishnamoorti

2011-12-31T23:59:59.000Z

20

Hybrid DFT Functional-Based Static and Molecular Dynamics Studies of Excess Electron in Liquid Ethylene Carbonate  

SciTech Connect (OSTI)

We applied static and dynamic hybrid functional density functional theory (DFT) calculations to study the interactions of one and two excess electrons with ethylene carbonate (EC) liquid and clusters. Optimal structures of (EC){sub n} and (EC){sup ?}{sub n} clusters devoid of Li{sub +} ions, n?=?16, were obtained. The excess electron was found to be localized on a single EC in all cases, and the EC dimeric radical anion exhibits a reduced barrier associated with the breaking of the ethylene carbonoxygen covalent bond compared to EC{sub ?}. In ab initio molecular dynamics (AIMD) simulations of EC{sub ?} solvated in liquid EC, large fluctuations in the carbonyl carbonoxygen bond lengths were observed. AIMD simulations of a two-electron attack on EC in EC liquid and on Li metal surfaces yielded products similar to those predicted using nonhybrid DFT functionals, except that CO release did not occur for all attempted initial configurations in the liquid state.

Yu, J M; Balbuena, P B; Budzien, J L; Leung, Kevin

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Monitoring Single Molecule Reactivity On a Carbon Nanotube  

E-Print Network [OSTI]

LETTERS Monitoring Single-Molecule Reactivity on a Carbondevice directly transduces single-molecule attachments andoptical methods in single-molecule research. Compared to

Collins, Philip G

2008-01-01T23:59:59.000Z

22

Atomic-Scale Detection of Organic Molecules Coupled to Single-Walled Carbon Nanotubes  

E-Print Network [OSTI]

Atomic-Scale Detection of Organic Molecules Coupled to Single-Walled Carbon Nanotubes Sung You Hong.green@chem.ox.ac.uk; ben.davis@chem.ox.ac.uk Functionalized carbon nanotubes (f-CNTs) bearing organic molecules functionalization of single-walled carbon nanotubes (SWNTs) can tailor critical proper- ties such as solubility

Davis, Ben G.

23

Supporting Information to: Single-Molecule Electrocatalysis by Single-Walled Carbon Nanotubes  

E-Print Network [OSTI]

S1 Supporting Information to: Single-Molecule Electrocatalysis by Single-Walled Carbon Nanotubes. Experimental Methods I.1. Purification of SWNTs. The single-walled carbon nanotubes were purchased from Carbon Nanotechnologies Incorporated (Purified HiPCO single-walled carbon nanotubes). These SWNTs have an average diameter

Chen, Peng

24

UV-vis spectroscopy of iodine adsorbed on alkali-metal-modified zeolite catalysts for addition of carbon dioxide to ethylene oxide  

SciTech Connect (OSTI)

The basicity of alkali-metal-exchange (Na, K, Cs) zeolites X and Y was probed by UV-vis diffuse reflectance spectroscopy of adsorbed iodine. The observed blue shift in the visible absorption spectrum of adsorbed iodine, compared to gaseous iodine, correlated well with the negative charge on the framework oxygen atoms calculated from the Sanderson electronegativity equalization principle. The blue shifts associated with iodine adsorbed on classical catalytic supports like silica, alumina, and magnesia suggest that the iodine adsorption technique for probing basicity is applicable to a wide variety of solids. Iodine was also adsorbed on X and Y zeolites containing occluded cesium oxide formed by decomposition of impregnated cesium acetate. However, the iodine appeared to irreversibly react on these strongly basic samples, possibly forming an adsorbed triiodide ions. As a complement to the adsorption studies, the activity of alkali-metal-containing zeolites for the base-catalyzed formation of ethylene carbonate from ethylene oxide and carbon dioxide was investigated. Among the ion-exchanged zeolites, the cesium form of zeolite X exhibited the highest activity for ethylene carbonate formation. The catalytic activity of a zeolite containing occluded cesium was even higher than that of a cesium-exchanged zeolite. The presence of water adsorbed in zeolite pores promoted the rate of ethylene carbonate formation for both cesium-exchanged and cesium-impregnated zeolite X.

Doskocil, E.J.; Bordawekar, S.V.; Kaye, B.G.; Davis, R.J. [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Chemical Engineering] [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Chemical Engineering

1999-07-29T23:59:59.000Z

25

Label-free single-molecule detection of DNA-hybridization kinetics with a carbon nanotube  

E-Print Network [OSTI]

Label-free single-molecule detection of DNA- hybridization kinetics with a carbon nanotube field , Colin Nuckolls2 and Kenneth L. Shepard1 * Single-molecule measurements of biomolecules can provide systems with fast dynamics. Here, we report the detection of DNA hybridization at the single-molecule

Hone, James

26

Ethylene synthesis and sensitivity in crop plants.  

E-Print Network [OSTI]

?? The gaseous plant hormone ethylene is a small molecule that regulates developmental change. Research was conducted in three areas: sensitivity, synthesis, and alterations to (more)

Romagnano, Joseph F.

2008-01-01T23:59:59.000Z

27

Ethylene Synthesis and Sensitivity in Crop Plants.  

E-Print Network [OSTI]

??The gaseous plant hormone ethylene is a small molecule that regulates developmental change. Research was conducted in three areas: sensitivity, synthesis, and alterations to synthesis. (more)

Romagnano, Joseph F.

2008-01-01T23:59:59.000Z

28

Monitoring Single-Molecule Reactivity on a Carbon Nanotube  

E-Print Network [OSTI]

measurements and simultaneously illuminating additional dynamics, these results demonstrate this platform as ultrasen- sitive chemical and biological sensors. For example, by tailoring the surface chemistry of tools for investigating complex chemical processes. Single-molecule chemical detection has been

Weiss, Gregory A.

29

Extraction of aromatics from petroleum naphtha reformate by a 1-cyclohexyl-2-pyrrolidone/ethylene carbonate mixed solvent  

SciTech Connect (OSTI)

The phase equilibria for the extraction of aromatics from petroleum naphtha reformate (with a boiling range of 338--403 K) using a mixed solvent of 1-cyclohexyl-2-pyrrolidone (CHP) and ethylene carbonate (EC) have been correlated using the universal function-group activity coefficients model (UNIFAC). The interaction parameters of CHP and EC with different hydrocarbon groups present in the reformate such as CH{sub 2} (paraffinic CH{sub 2}), ACH (aromatic CH), ACCH{sub 2} (aromatic CCH{sub 2}), and each of the two solvents have been fitted to experimental concentrations of three ternary systems that contain these groups. The extraction runs have been carried out at different temperatures, solvent compositions, and solvent-to-feed ratios. Experimental results compared favorably with those predicted from the UNIFAC method. The optimum extraction conditions were determined by calculation of the minimum energy of separation. In this study these conditions were found to be at a mixed solvent composition of 65% EC (by weight) and 35% CHP. The solvent-to-feed ratio was 1.8 on a volume basis, and the extraction temperature was 329 K.

Radwan, G.M.; Al-Muhtaseb, S.A.; Dowaidar, A.M.; Fahim, M.A. [United Arab Emirates Univ., Al-Ain (United Arab Emirates). Chemical and Petroleum Engineering Dept.] [United Arab Emirates Univ., Al-Ain (United Arab Emirates). Chemical and Petroleum Engineering Dept.

1997-02-01T23:59:59.000Z

30

The mechanism of the adsorption of water molecules on carbon adsorbents  

Science Journals Connector (OSTI)

The results of studies on the mechanism of the adsorption of water molecules by nonporous and microporous carbon adsorbents carried out using various physicochemical methods are surveyed. The influence of the chemical state of the surface and the porous structure of adsorbents on the heat of adsorption and the mechanism of filling of the carbon surface and micro- and mesopores of carbon adsorbents are analysed. The nature of primary adsorption sites and the influence of the adsorption of water molecules on the X-ray diffraction parameters (microcrystalline structure) of carbon adsorbents are studied. The methods of investigation of the porous structure and chemical state of the surface of carbon adsorbents based on the analysis of water vapour adsorption isotherms are considered. The bibliography includes 80 references.

R Sh Vartapetyan; A M Voloshchuk

1995-01-01T23:59:59.000Z

31

Sorption, Dilation, and Partial Molar Volumes of Carbon Dioxide and Ethane in Cross-Linked Poly(ethylene oxide)  

Science Journals Connector (OSTI)

First, carbon dioxide is a common impurity in natural gas that must be removed for heating value improvement. ... A database of PMV values for these two gases in liquids and rubbery polymers was constructed, and a correlation between PMV and solubility parameter was observed, so the chemical structure of the polymer can influence the PMV of the sorbed gas. ... Cylinders of ethane (99% purity) and carbon dioxide (99.999% purity) were purchased from Airgas Southwest Inc. (Corpus Christi, TX). ...

Cludio P. Ribeiro, Jr.; Benny D. Freeman

2008-11-07T23:59:59.000Z

32

Novel Routes to Ethylene Glycol Synthesis via Acid-Catalyzed Carbonylation of Formaldehyde and Dimethoxymethane.  

E-Print Network [OSTI]

??Carbon-carbon bond forming carbonylation reactions were investigated as candidates to replace ethene epoxidation as the major source of ethylene glycol production. This work was motivated (more)

Celik, Fuat Emin

2010-01-01T23:59:59.000Z

33

The Arabidopsis hrl1 mutation reveals novel overlapping roles for salicylic acid, jasmonic acid and ethylene  

E-Print Network [OSTI]

and ethylene signalling in cell death and defence against pathogens Sendil K. Devadas1 , Alexander Enyedi2 molecules: salicylic acid (SA), jasmonic acid (JA) and ethylene (ET). The hrl1 (hypersensitive response

Raina, Ramesh

34

Low pressure noncryogenic processing for ethylene recovery  

SciTech Connect (OSTI)

This patent describes a process for recovering ethylene from a hydrocarbon gas feed stream containing components selected from the group consisting of hydrogen, nitrogen, methane, carbon monoxide, at least 5 mol % of ethylene, ethane, heavier saturated and unsaturated hydrocarbons and mixtures. It comprises: countercurrently contacting the hydrocarbon gas feed stream with a lean physical solvent. It comprises paraffinic solvents; naphthenic solvents; benzene, toluene, C{sub 8}--C{sub 10} aromatic compounds; dialkyl ethers of polyalkylene glycol; regenerating the ethylene rich solvent in a distillation column equipped with at least one reflux condenser and at least one reboiler to produce ethylene plus hydrocarbon product as an overhead stream and the lean physical solvent as a bottom stream, the ethylene plus hydrocarbon product being suitable for bypassing a downstream demethanizer.

Mehrta, Y.R.

1991-05-28T23:59:59.000Z

35

Characterization of poly(ethylene terephthalate) used in commercial bottled water  

E-Print Network [OSTI]

Characterization of poly(ethylene terephthalate) used in commercial bottled water Cristina Bach1 into drinking water packaged in poly(ethylene terephtalate) bottles and to know the origin of these substances of molecules inside the polymer, it means the pollution of the bottled water. 1. Introduction Poly(ethylene

Paris-Sud XI, Université de

36

Ethylene in Organic Synthesis. Repetitive Hydrovinylation of Alkenes for Highly Enantioselective Syntheses of Pseudopterosins  

E-Print Network [OSTI]

Ethylene in Organic Synthesis. Repetitive Hydrovinylation of Alkenes for Highly Enantioselective. In this report we highlight the signifi- cant potential of ethylene as a reagent for the intro- duction in molecules of this class. Ethylene is one of the most abundantly available feedstocks, providing up to 30

RajanBabu, T. V. "Babu"

37

Plants metabolise ethylene to ethylene glycol  

Science Journals Connector (OSTI)

... Fig. 1 Separation of neutral metabolites of a, 14C-ethylene and b, 14C-propylene by paper chromatography with butanol : acetic acid:water 3: ... chromatography with butanol : acetic acid:water 3:3:2.

Dale C. Blomstrom; Elmo M. Beyer

1980-01-03T23:59:59.000Z

38

Ethylene oxide and Acetaldehyde in hot cores  

E-Print Network [OSTI]

[Abridged] Ethylene oxide and its isomer acetaldehyde are important complex organic molecules because of their potential role in the formation of amino acids. Despite the fact that acetaldehyde is ubiquitous in the interstellar medium, ethylene oxide has not yet been detected in cold sources. We aim to understand the chemistry of the formation and loss of ethylene oxide in hot and cold interstellar objects (i) by including in a revised gas-grain network some recent experimental results on grain surfaces and (ii) by comparison with the chemical behaviour of its isomer, acetaldehyde. We test the code for the case of a hot core. The model allows us to predict the gaseous and solid ethylene oxide abundances during a cooling-down phase prior to star formation and during the subsequent warm-up phase. We can therefore predict at what temperatures ethylene oxide forms on grain surfaces and at what temperature it starts to desorb into the gas phase. The model reproduces the observed gaseous abundances of ethylene oxid...

Occhiogrosso, A; Herbst, E; Viti, S; Ward, M D; Price, S D; Brown, W A

2014-01-01T23:59:59.000Z

39

Ethylene combustion on unsupported and supported Pd: a comparative , Y.-F. Hana,b  

E-Print Network [OSTI]

Ethylene combustion on unsupported and supported Pd: a comparative study D. Kumara , Y.-F. Hana Ethylene combustion is studied at elevated pressures on Pd(100) and compared with supported Pd catalysts; the highest reaction rate was achieved for relatively low coverage of surface carbon. KEY WORDS: ethylene

Goodman, Wayne

40

Role of Ethylene Oxidation in the Mechanism of Ethylene Action  

Science Journals Connector (OSTI)

Oxidation of ethylene to ethylene oxide by ethylene monooxygenase (EM) has been shown to...Mycobacterium paraffinicum...(14, 16, 17, 18, 32), plants (8, 21, 24), and animals (22, 23). In microorga...

F. B. Abeles

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Towards Selective Ethylene Tetramerization .  

E-Print Network [OSTI]

??There is an increasing trend towards advancing the understanding and development of ethylene oligomerization catalysts, both in academia and industry. The metal of choice in (more)

Shaikh, Yacoob

2012-01-01T23:59:59.000Z

42

Quantum entropic ambiguities: Ethylene  

Science Journals Connector (OSTI)

In a quantum system, there may be many density matrices associated with a state on an algebra of observables. For each density matrix, one can compute its entropy. These are, in general, different. Therefore, one reaches the remarkable possibility that there may be many entropies for a given state [R. Sorkin (private communication)]. This ambiguity in entropy can often be traced to a gauge symmetry emergent from the nontrivial topological character of the configuration space of the underlying system. It can also happen in finite-dimensional matrix models. In the present work, we discuss this entropy ambiguity and its consequences for an ethylene molecule. This is a very simple and well-known system, where these notions can be put to tests. Of particular interest in this discussion is the fact that the change of the density matrix with the corresponding entropy increase drives the system towards the maximally disordered state with maximum entropy, where Boltzmans formula applies. Besides its intrinsic conceptual interest, the simplicity of this model can serve as an introduction to a similar discussion of systems such as colored monopoles and the breaking of color symmetry.

A. P. Balachandran; Amilcar Queiroz; S. Vaidya

2013-07-01T23:59:59.000Z

43

Non-conventional sources for ethylene  

SciTech Connect (OSTI)

Two processes for conversion of methanol to ethylene are reviewed as to economic attractiveness at about 1990. The processes are homologation of methane to ethanol with dehydration to ethylene and direct catalytic cracking of methanol to ethylene using Mobil zeolite catalysts. For the economic projections, synthesis gas is assumed to be available from a large leverage-financed, synthetis gas unit based on a pressurized, entrained bed, coal-gasifier, built on the US Gulf Coast in 1990 at a cost of $0.19/m/sup 3/, and methane is valued at $650/metric ton in 1990 based on continuous operation of natural gas-based methanol plants in the US. The economics of ethylene production via conventional steam cracking of naphtha/gas oil are compared with those of the new technology. The methanol homologation/ethanol dehydration route to ethylene is more attractive than catalytic cracking at 40% carbon selectivity to ethylene. At higher selectivities, the methanol cracking scheme becomes economically competitive. However, with an assumption of a price of $650/metric ton for methanol in 1990, neiter methanol-based route is competitive with conventional steam cracking on the Gulf Coast in 1990. A methanol price of $500/metric ton would make the methanol-based oriduction routes attractive. 23 references.

Leonard, J.P.; Weiss, L.H.

1981-12-01T23:59:59.000Z

44

Natural Gas Hydrate Dissociation by Presence of Ethylene Glycol  

Science Journals Connector (OSTI)

Natural Gas Hydrate Dissociation by Presence of Ethylene Glycol ... solids that form from mixts. of water and light natural gases such as methane, carbon dioxide, ethane, propane and butane. ... Pulse Combustion Characteristics of Various Gaseous Fuels ...

Shuanshi Fan; Yuzhen Zhang; Genlin Tian; Deqing Liang; Dongliang Li

2005-11-08T23:59:59.000Z

45

The investigation of interactions between single walled carbon nanotubes and flexible chain molecules  

E-Print Network [OSTI]

Anisotropic nanoparticles, such as inorganic nanowires and carbon nanotubes, are promising materials for a wide range of technological applications including transparent conductors, thin film transistors, photovoltaic ...

Jeng, Esther Shu-Hsien

2010-01-01T23:59:59.000Z

46

On single-molecule DNA sequencing with atomic force microscopy using functionalized carbon nanotube probes  

E-Print Network [OSTI]

A novel DNA sequencing method is proposed based on the specific binding nature of nucleotides and measured by an atomic force microscope (AFM). A single molecule of DNA is denatured and immobilized on an atomically fiat ...

Burns, Daniel James

2004-01-01T23:59:59.000Z

47

Ethylene insensitive plants  

SciTech Connect (OSTI)

Nucleic acid and polypeptide sequences are described which relate to an EIN6 gene, a gene involved in the plant ethylene response. Plant transformation vectors and transgenic plants are described which display an altered ethylene-dependent phenotype due to altered expression of EIN6 in transformed plants.

Ecker, Joseph R. (Carlsbad, CA); Nehring, Ramlah (La Jolla, CA); McGrath, Robert B. (Philadelphia, PA)

2007-05-22T23:59:59.000Z

48

Ethylene Oxide Explosions  

Science Journals Connector (OSTI)

... THE occasional occurrence of ethylene oxide explosions during the fumigation of dried fruit has led us to undertake a detailed ... yielded results somewhat like those for acetaldehyde1,2.. Cool flames can be initiated in ethylene oxide air mixtures in the neighbourhood of 330 C. at atmospheric pressure. ...

J. H. BURGOYNE; F. A. BURDEN

1948-07-31T23:59:59.000Z

49

Ethylene in Plants  

Science Journals Connector (OSTI)

... as the master controller of all plant growth and developmental processes. It now seems that ethylene, whose dramatic effects on plants have been known for more than 70 years, is ... 10 years there has been a veritable explosion of research into the physiological actions of ethylene directed towards assessing its significance as a 'natural' hormone.

L. J. AUDUS

1973-11-23T23:59:59.000Z

50

Ozone and ethylene stress  

Science Journals Connector (OSTI)

... SIR"In a recent News and Views article1 "Adding ethylene to injury", M. Unsworth discussed the results of Mehlhorn and Wellburn2, who reported ... M. Unsworth discussed the results of Mehlhorn and Wellburn2, who reported that both endogenous ethylene (a stress-hormone) and exogenous ozone are cooperating prerequisites for injury to pea plants ...

E. F. ELSTNER

1987-08-06T23:59:59.000Z

51

Ethylene in soil  

Science Journals Connector (OSTI)

... we have confirmed earlier reports that heat8 and even autoclaving9 can stimulate the production of ethylene by soils (Table 1). The effect of heat at 100 C on the ... soils (Table 1). The effect of heat at 100 C on the release of ethylene from pure cultures of M. hiemalis was therefore investigated. No ...

J. M. LYNCH

1975-08-14T23:59:59.000Z

52

Ethylene and soil fungistasis  

Science Journals Connector (OSTI)

... SMITH1 has reported that ethylene is a causative agent of soil fungistasis, that its production in soil varies with ... earlier work3; more recent observations4 suggest that soil anaerobiosis is necessary to mobilise substrates3 for ethylene formation by soil microorganisms.

J. M. LYNCH; S. H. T. HARPER

1974-09-20T23:59:59.000Z

53

Ethylene and Fruits  

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

Ethylene and Fruits Ethylene and Fruits Name: Devon Location: N/A Country: N/A Date: N/A Question: im a junior in high school and i have to do a research paper on the chemistry behind fruit ripening. all i seem to find is information on ethylene gas. my teacher whats to know the chemicals involved in fruit ripening and im not having much luck. do you think you could possibly help? Replies: You have found it! Ethylene plant hormone is the main agent! A book on the subject: Biology and Biotechnology of the Plant Hormone Ethylene A. K. Kanellis (Editor) C. Chang (Editor) D. Grierson (Editor) H. Kende (Editor) This hormone is used in the produce industry to schedule the ripening of fruit so they are peaking when they make the shelves. The introduction of this hormone can make ripening occur earlier than normal.

54

ACR process for ethylene  

SciTech Connect (OSTI)

Describes how the advanced cracking reactor process, which is ready for a logical commercial application, offers total liquids feedstock flexibility from light naphthenes through vacuum gas oils in the same production unit. Several processes are presently being developed which are aimed at maintaining olefin selectivity when cracking the heaviest feeds. Addresses the problems posed by such heavy feedstocks. The following trends favor the ACR process in the 1980s: natural gas price decontrol; limited natural gas reserves; few new domestic LPG-based ethylene plants will be built; an economic recovery will create the need for more ethylene capacity; modest increases in ''real'' crude oil prices; plentiful supplies of vacuum gas oil at prices making it an attractive ethylene feedstock; and increasing supplies of light naphtha at prices making it an attractive ethylene feedstock as well. Predicts that these factors will swing the preferred feedstocks for ethylene manufacture back to crude oil distillates before the end of the decade. Argues that in this environment, the ACR process can deliver the lowest cost ethylene in the industry. ACR has full-range feedstock flexibility, high selectivity to ethylene, and less sensitivity to feedstock costs and co-product credits.

Baldwin, R.L.; Kamm, G.R.

1983-01-01T23:59:59.000Z

55

Ethylene on graphite: Heats of adsorption and phase diagram  

Science Journals Connector (OSTI)

Isosteric heats of adsorption (qst) of ethylene on Grafoil MAT have been measured calorimetrically in the region 98ethylene-graphite interaction potential, a value is obtained for the heat of adsorption at zero coverage, qst(0)=20.40.2 kJ?l-1, at T=120 K. At this temperature, the effects of surface heterogeneity and of clustering of the adsorbed molecules are clearly delineated and thus permit an extrapolation to be made with reasonable certainty.

A. Inaba and J. A. Morrison

1986-09-01T23:59:59.000Z

56

Novel membrane technology for green ethylene production.  

SciTech Connect (OSTI)

Ethylene is currently produced by pyrolysis of ethane in the presence of steam. This reaction requires substantial energy input, and the equilibrium conversion is thermodynamically limited. The reaction also produces significant amounts of greenhouse gases (CO and CO{sub 2}) because of the direct contact between carbon and steam. Argonne has demonstrated a new way to make ethylene via ethane dehydrogenation using a dense hydrogen transport membrane (HTM) to drive the unfavorable equilibrium conversion. Preliminary experiments show that the new approach can produce ethylene yields well above existing pyrolysis technology and also significantly above the thermodynamic equilibrium limit, while completely eliminating the production of greenhouse gases. With Argonne's approach, a disk-type dense ceramic/metal composite (cermet) membrane is used to produce ethylene by dehydrogenation of ethane at 850 C. The gas-transport membrane reactor combines a reversible chemical reaction with selective separation of one product species and leads to increased reactant conversion to the desired product. In an experiment ethane was passed over one side of the HTM membrane and air over the other side. The hydrogen produced by the dehydrogenation of ethane was removed and transported through the HTM to the air side. The air provided the driving force required for the transport of hydrogen through the HTM. The reaction between transported hydrogen and oxygen in air can provide the energy needed for the dehydrogenation reaction. At 850 C and 1-atm pressure, equilibrium conversion of ethane normally limits the ethylene yield to 64%, but Argonne has shown that an ethylene yield of 69% with a selectivity of 88% can be obtained under the same conditions. Coking was not a problem in runs extending over several weeks. Further improved HTM materials will lower the temperature required for high conversion at a reasonable residence time, while the lower temperature will suppress unwanted side reactions and prolong membrane life. With the Argonne approach, oxygen does not contact the ethane/ethylene stream, so oxidation products are not formed. Consequently, higher selectivity to ethylene and fewer by-products can be achieved. Some benefits are: (1) Simplifies overall product purification and processing schemes; (2) Results in greater energy efficiency; (3) Completely eliminates greenhouse gases from the reactor section; and (4) Lowers the cost of the 'back end' purification train, which accounts for about 70% of the capital cost of a conventional ethylene production unit.

Balachandran, U.; Lee, T. H.; Dorris, S. E.; Udovich, C. A.; Scouten, C. G.; Marshall, C. L. (Energy Systems); ( CSE)

2008-01-01T23:59:59.000Z

57

Structural opportunities of ETFE (ethylene tetra fluoro ethylene)  

E-Print Network [OSTI]

An exploration of ETFE (ethylene tetra fluoro ethylene) foil cushions was performed in its use for building cladding. ETFE foil cushions consist of alternating layers of ETFE film and air cavities. An inflation system ...

Robinson, Leslie A. (Leslie Anne), 1982-

2005-01-01T23:59:59.000Z

58

Ethylene and soil fungistasis (reply)  

Science Journals Connector (OSTI)

... research1. We have shown clearly that spore-forming anaerobic bacteria are the major producers of ethylene in soil; that ... in soil; that ethylene is produced in anaerobic microsites in even (relatively dry soil; that the anaerobic microsites ...

SMITH

1974-09-20T23:59:59.000Z

59

Ethylene Biosynthesis and Signaling Networks  

Science Journals Connector (OSTI)

...Activation of the ethylene gas response pathway in Arabidopsis...R. (1998). The ethylene gas signal transduction pathway...1027-1036. Mehta, P.K., Hale, T.I., and Christen, P...J.R. (1998). Ethylene gas: Perception, signaling and...

Kevin L.-C. Wang; Hai Li; Joseph R. Ecker

60

Ethylene and the Respiration Climacteric  

Science Journals Connector (OSTI)

... seerns to be almost invariably associated with endogenous production of high concentrations of ethylene3, the ethylene evolved after ripening begins being far greater than the amount that was required to start ... (?non-climacteric? fruits) show no clear-cut respiratory climacteric and evolve very little ethylene during ripening. If such fruits are treated with ...

M. S. REID; H. K. PRATT

1970-06-06T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Adding ethylene to injury  

Science Journals Connector (OSTI)

... such as drought. On page 417 of this issue, Mehlhorn and Wellburn propose that ethylene, known to be emitted from stressed plants, determines the susceptibility of plants to injury ... , this could be an important unifying concept for explaining ozone/stress interactions.

Mike Unsworth

1987-06-04T23:59:59.000Z

62

The ethylene transcriptional response mediated by ETHYLENE INSENSITIVE3 in Arabidopsis thaliana  

E-Print Network [OSTI]

W. T. Frankenberger, Ethylene: agricultural sources and113 Disconnect Between Ethylene Transcription Steady-State121 Dependency of Ethylene Hormone Crosstalk on EIN3

Chang, Katherine Noelani

2011-01-01T23:59:59.000Z

63

Characterization of ETHYLENE INSENSITIVE SIX and the ENHANCER OF ETHYLENE INSENSITIVE in Arabidopsis thaliana  

E-Print Network [OSTI]

Schaller GE (2002) Effect of ethylene pathway mutations uponexpression of the ethylene receptor ETR1 from Arabidopsis.RB and Ecker JR (2005). Ethylene signal transduction in stem

Nehring, Ramlah Bliss

2007-01-01T23:59:59.000Z

64

Modelling the effect of nuclear motion on the attosecond time-resolved photoelectron spectra of ethylene  

E-Print Network [OSTI]

Using time dependent density functional theory (TDDFT) we examine the energy, angular and time-resolved photoelectron spectra (TRPES) of ethylene in a pump-probe setup. To simulate TRPES we expose ethylene to an ultraviolet (UV) femtosecond pump pulse, followed by a time delayed extreme ultraviolet (XUV) probe pulse. Studying the photoemission spectra as a function of this delay provides us direct access to the dynamic evolution of the molecule's electronic levels. Further, by including the nuclei's motion, we provide direct chemical insight into the chemical reactivity of ethylene. These results show how angular and energy resolved TRPES could be used to directly probe electron and nucleus dynamics in molecules.

Crawford-Uranga, Alison; Mowbray, Duncan John; Kurth, Stefan; Rubio, Angel

2014-01-01T23:59:59.000Z

65

Ethylene Oxide an Antagonist of Ethylene in Metabolism  

Science Journals Connector (OSTI)

... RECOGNITION of ethyleno oxide as an inhibitor of ethylene production in fruit1 presents new possibilities for exploring both the mode of action of ... production in fruit1 presents new possibilities for exploring both the mode of action of ethylene and its biosynthetic pathway. This report summarizes recent experiments with ...

MORRIS LIEBERMAN; SAM ASEN; L. W. MAPSON

1964-11-21T23:59:59.000Z

66

Ethylene detection in fruit supply chains  

Science Journals Connector (OSTI)

...Steffen Janssen and Walter Lang Ethylene detection in fruit supply chains S...and advanced warehouse management . Ethylene is a gaseous ripening phytohormone of fruits and plants. Presently, ethylene is primarily measured with stationary...

2014-01-01T23:59:59.000Z

67

Ethylene Glycol Poisoning and Lactate Concentrations  

Science Journals Connector (OSTI)

......2009 letter Letter to the Editor Ethylene Glycol Poisoning and Lactate Concentrations...Wilrijkstraat 10, B-2650 Edegem, Belgium Ethylene glycol poisoning and lactate concentrations...Comment Letter | 107-21-1 Ethylene Glycol 50-21-5 Lactic Acid......

Philippe G. Jorens

2009-09-01T23:59:59.000Z

68

New Insights Into Regulation of Ethylene Responsiveness  

E-Print Network [OSTI]

E. M. (1993). Arabidopsis ethylene-response gene ETR1:1997). Activation of the ethylene gas response pathway inby the nuclear protein ETHYLENE-INSENSITIVE3 and related

Deslauriers, Steve

2012-01-01T23:59:59.000Z

69

Ethylene Glycol Analysis by Gas Chromatography  

Science Journals Connector (OSTI)

......March-April 1980 research-article Articles Ethylene Glycol Analysis by Gas Chromatography...specific gas chromatographic assay for ethylene glycol was developed. It requires a...accuracy, and precision data are reported. Ethylene glycol analysis by gas chromatography......

Robert O. Bost; I. Sunshine

1980-01-01T23:59:59.000Z

70

Genesis and Biogenesis of Ethylene  

Science Journals Connector (OSTI)

... 5. We suggested that a relationship may exist between this system and that which produces ethylene in cells. Ethane production in a non-enzymatic system, in which the reaction of ... has also been reported2. This article describes an analogous non-enzymatic system which produces predominantly ethylene, rather than ethane. This system differs from its predecessor in two respects: it ...

MORRIS LIEBERMAN; L. W. MAPSON

1964-10-24T23:59:59.000Z

71

Ethylene Production from Linolenic Acid  

Science Journals Connector (OSTI)

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

F. B. ABELES

1966-04-02T23:59:59.000Z

72

Ethylene Production by Pseudomonas solanacearum  

Science Journals Connector (OSTI)

... Ethylene production was detected from several strains of the pathogen when grown in peptone-glucose broth ... broth in shake culture at 30 C. The strain causing tobacco-tomato wilt also produced ethylene, and at levels higher than the banana strains, 7 p.p.m. being ...

H. T. FREEBAIRN; I. W. BUDDENHAGEN

1964-04-18T23:59:59.000Z

73

Ethylene Oxide for Soil Sterilization  

Science Journals Connector (OSTI)

... , this method may be time-consuming, and in view of the physical properties of ethylene oxide (solubility in water and boiling point 12-5 C.) it was considered ... consists of making up an aqueous solution to supply 2 or 4 c.c. of ethylene oxide in a given amount of water, using pre-chilled glassware and water. The ...

R. E. ROSE; R. W. BAILEY

1952-04-26T23:59:59.000Z

74

Quantum-chemical investigation of the interaction of nitrogen and carbon monoxide molecules with the Lewis acid sites of aluminium oxide  

SciTech Connect (OSTI)

Within the framework of the cluster approximation, using covalent and ionic models of Lewis acid sites of aluminumoxide, their electronic structure, as well as that of complexes of nitrogen and carbon monoxide molecules with them, was calculated. It was shown that the Lewis acid sites, representing a truncated tetrahedron, exhibit stronger electron-acceptor properties than the corresponding sites in the form of a truncated octahedron. For both molecules, the linear form of adsorption is energetically more profitable than the T-shaped form. The results obtained by the nonempirical SCF MO LCAO method in the STO-3GF basis and by semiempirical methods in CNDO/2 and INDO approximatations, are qualitatively the same.

Senchenya, I.N.; Chuvylkin, N.D.; Kazanskii, V.B.

1986-11-01T23:59:59.000Z

75

ATP molecule ATP molecule  

E-Print Network [OSTI]

ATP molecule 9 ATP molecule 8 Autumn 2003 · Vol. 1 No. 2 · inSiDE inSiDE · Vol. 1 No. 2 · Autumn with adenosine 5`-triphosphate (ATP). ATP is the most important energy carrier in cellular metabolism, and each human being produces its own weight in ATP every day. The ATP molecule is shown in Figure 1, where

76

Ethylene Biosynthesis and Signaling Networks  

Science Journals Connector (OSTI)

...Diphenylene iodonium, an inhibitor of ROS generation, blocks...induced by elicitors, such as chitosan and OGA these compounds do...Rojo et al., 1999). Inhibitors of ethylene biosynthesis or...JA, treatment of elicitor chitosan, and wounding stress. However...

Kevin L.-C. Wang; Hai Li; Joseph R. Ecker

77

NREL Produces Ethylene via Photosynthesis (Fact Sheet), Highlights in Science, NREL (National Renewable Energy Laboratory)  

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

Environmentally friendly process offers Environmentally friendly process offers intriguing alternative to fossil-fuel-based ethylene for chemicals and transportation fuels. Scientists at the National Renewable Energy Laboratory (NREL) have demonstrated a new way to use photosynthesis to produce ethylene. NREL scientists introduced a gene for ethylene forming enzyme (EFE) into a cyanobacterium and demonstrated that the organism remained stable through at least four generations, producing ethylene gas that could be easily captured. Ethylene is the most widely produced petrochemical feedstock in the world. It is currently produced exclusively from fossil fuels, and its production is the largest carbon dioxide (CO 2 )- emitting process in the chemical industry. Steam cracking of long-chain hydrocarbons from

78

Ethylene Insensitivity in Maize: Analysis of Ethylene Receptors and the Ethylene Response in Maize.  

E-Print Network [OSTI]

??The biological role of ethylene, H2C=CH2, was first identified as a plant hormone responsible for leaf drop from the observation that plants relatively close to (more)

Chen, Juifen

2011-01-01T23:59:59.000Z

79

Photo double ionization of ethylene and acetylene near threshold  

E-Print Network [OSTI]

double ionization of ethylene and acetylene near thresholdphoto double ionization of ethylene (dou- ble CC bond) andsimilar yields of metastable ethylene dications produced by

Gaire, B.

2014-01-01T23:59:59.000Z

80

The Analysis of Altered Ethylene Response in Arabidopsis  

E-Print Network [OSTI]

characteristics of ethylene-requiring tomato mutantpathway in relation to ethylene and polyamine biosynthesis.calcium, kinetin, and ethylene on growth and cell- wall

Alvarez, Ashley

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

CO Laser Absorption Coefficients for Gases of Biological Relevance: H2O, CO2, Ethanol, Acetaldehyde, and Ethylene  

Science Journals Connector (OSTI)

The pressure-broadened spectra of water vapor, carbon dioxide, ethylene, ethanol, and acetaldehyde were recorded with the use of a liquid nitrogen-cooled CO laser-based photoacoustic...

Persijn, S T; Veltman, R H; Oomens, J; Harren, F J M; Parker, D H

2000-01-01T23:59:59.000Z

82

Ethylene Feedstock Characterization by Microscale Pyrolysis/Gas Chromatography  

Science Journals Connector (OSTI)

......January 1978 research-article Articles Ethylene Feedstock Characterization by Microscale...for evaluating naphtha feedstocks for ethylene production and for predicting yields...chromatography and commercial crackers ethylene yields. Ethylene Feedstock Characterization......

M. Greco

1978-01-01T23:59:59.000Z

83

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

84

Reactivity of Niobium?Carbon Cluster Ions with Hydrogen Molecules in Relation to Formation Mechanism of Met?Car Cluster Ions  

Science Journals Connector (OSTI)

Reactivity of Niobium?Carbon Cluster Ions with Hydrogen Molecules in Relation to Formation Mechanism of Met?Car Cluster Ions ... After the multiple collisions of He and H2 in the collision cell, the cluster ions entered the vacuum chamber (typically ?8 10?4 Torr) and were introduced into the differentially pumped chamber through a skimmer, where the cluster ions were accelerated orthogonally by a pulsed electric field for the time-of-flight mass analysis. ... The nonreactivity of NbnCm+ with H2 indicates that the energy barrier for the H2 attachment is high enough or the H2 attachment is energetically unfavorable (or both), meaning that NbnCm+ has a negative H2 affinity. ...

Ken Miyajima; Naoya Fukushima; Fumitaka Mafun

2008-06-07T23:59:59.000Z

85

Thermal instabilities of organic carbonates with discharged cathode materials in lithium-ion batteries  

Science Journals Connector (OSTI)

Thermal instability of lithiated cathode materials with organic...4, LiMn2O4, and LiCoO2...were mixed with diethyl carbonate, dimethyl carbonate, ethylene carbonate, ethyl methyl carbonate, and propylene carbonat...

Wei-Jie Ou; Chen-Shan Kao; Yih-Shing Duh

2014-06-01T23:59:59.000Z

86

The Reaction of Hydrogen Atoms with Ethylene  

Science Journals Connector (OSTI)

...research-article The Reaction of Hydrogen Atoms with Ethylene M. P. Halstead D. A. Leathard R...the reaction between hydrogen atoms and ethylene in a discharge-flow system at 290 3...argon were used and the hydrogen atom and ethylene flow rates were in the ranges 5 to 10...

1970-01-01T23:59:59.000Z

87

Transport of Gases in Carbon Molecular Sieve Membranes by Multinuclear...  

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

"difficult" separations of gas mixtures such as carbon dioxide methane and ethane ethylene separations. While there are many reports on macroscopic transport properties of CMS...

88

Ethylene Biosynthesis and Signaling Networks  

Science Journals Connector (OSTI)

...wound-induced genes, including JR1, JR2, and vegetative storage protein (VSP). The expression of these genes upon wounding...kingdom. However, ethylene is one of the major alkene in seawater produced by photochemical reactions of the dissolved organic...

Kevin L.-C. Wang; Hai Li; Joseph R. Ecker

89

New Insights Into Regulation of Ethylene Responsiveness.  

E-Print Network [OSTI]

??Ethylene is a simple phytohormone known to be involved with many processes crucial to plant development, including fruit ripening and tissue senescence. In an effort (more)

Deslauriers, Steve

2012-01-01T23:59:59.000Z

90

Ethylene capacity tops 77 million mty  

SciTech Connect (OSTI)

World ethylene production capacity is 77.8 million metric tons/year (mty). This total represents an increase of more than 6 million mty, or almost 9%, over last year`s survey. The biggest reason for the large change is more information about plants in the CIS. Also responsible for the increase in capacity is the start-up of several large ethylene plants during the past year. The paper discusses construction of ethylene plants, feedstocks, prices, new capacity, price outlook, and problems in Europe`s ethylene market.

Rhodes, A.K.; Knott, D.

1995-04-17T23:59:59.000Z

91

Ultrafast Internal Conversion in Ethylene. II. Mechanisms and Pathways for Quenching and Hydrogen Elimination  

E-Print Network [OSTI]

Through a combined experimental and theoretical approach, we study the nonadiabatic dynamics of the prototypical ethylene (C$_2$H$_4$) molecule upon $\\pi \\rightarrow \\pi^*$ excitation with 161 nm light. Using a novel experimental apparatus, we combine femtosecond pulses of vacuum ultraviolet (VUV) and extreme ultraviolet (XUV) radiation with variable delay to perform time resolved photo-ion fragment spectroscopy. In this second part of a two part series, the extreme ultraviolet (17 eV$ ethylene (CH$_2$CH$_2$) and ethylidene (CH$_3$CH) like geometries are observed within 100 fs after $\\pi...

Allison, T K; Glover, W J; Wright, T W; Stooke, A M; Khurmi, C; van Tilborg, J; Liu, Y; Falcone, R W; Martinez, T J; Belkacem, A

2011-01-01T23:59:59.000Z

92

Molecule nanoweaver  

DOE Patents [OSTI]

A method, apparatus, and system for constructing uniform macroscopic films with tailored geometric assemblies of molecules on the nanometer scale. The method, apparatus, and system include providing starting molecules of selected character, applying one or more force fields to the molecules to cause them to order and condense with NMR spectra and images being used to monitor progress in creating the desired geometrical assembly and functionality of molecules that comprise the films.

Gerald, II; Rex E. (Brookfield, IL); Klingler, Robert J. (Glenview, IL); Rathke, Jerome W. (Homer Glen, IL); Diaz, Rocio (Chicago, IL); Vukovic, Lela (Westchester, IL)

2009-03-10T23:59:59.000Z

93

Separation of ethylene and ethane by adsorption on titanosilicate.  

E-Print Network [OSTI]

??The energy costs associated with ethane-ethylene separation could be significantly reduced by the development of alternatives to cryodistillation. This work examined ethylene recovery by equilibrium (more)

Shi, Meng

2010-01-01T23:59:59.000Z

94

New insights into ethylene signalling and wood development.  

E-Print Network [OSTI]

??This thesis describes experimental work concerning the biology of ethylene in the development of xylem in hybrid aspen, Populus tremula L. x tremuloides Michx. Ethylene (more)

Love, Jonathan

2009-01-01T23:59:59.000Z

95

Ethylene as a Cause of Soil Fungistasis  

Science Journals Connector (OSTI)

... by gas chromatography from about fifty soils collected throughout Australia with different origins and histories. Ethylene was the only material identified in all soils in concentrations likely to be biologically active ... was the only material identified in all soils in concentrations likely to be biologically active. Ethylene has recently been identified in soil under anaerobic conditions5. In this study, ...

A. M. SMITH

1973-11-30T23:59:59.000Z

96

Ethylene Evolution and Sub-Cellular Particles  

Science Journals Connector (OSTI)

... at least five separate reports of the preparation of cell-free systems capable of evolving ethylene. The earlier claims relating to soluble systems, acetone powders and breis1-8 have been ... doubtful whether certain of the plant sources which were used actually produce measurable quantities of ethylene, for example, etiolated peas and oats2. More recently, the report by Spencer5 of ...

STANLEY P. BURG; ELLEN A. BURG

1961-09-02T23:59:59.000Z

97

Ethylene Maleic Anhydride Copolymers as Viral Inhibitors  

Science Journals Connector (OSTI)

... vitro inhibition of deoxyribonuclease II, the intracellular deoxyribonuclease2'5. The biological activity of the ethylene maleic anhydride copolymers suggested the possibility that they might exert inhibitory effects on animal viruses ... might exert inhibitory effects on animal viruses. The polymers examined have included polycarboxylates derived from ethylene maleic anhydride5. In vitro prevention of viral cyto-pathogenicity in monkey and hamster kidney ...

ELMER T. FELTZ; WILLIAM REGELSON

1962-11-17T23:59:59.000Z

98

Ethylene, the Natural Regulator of Leaf Abscission  

Science Journals Connector (OSTI)

... ETHYLENE is increasingly thought of as an integral part of plant auto-regulation1; a concept ... as an integral part of plant auto-regulation1; a concept originating from the discovery that ethylene was a natural product of plant metabolism2,3. More recently, the use of gas ...

MICHAEL B. JACKSON; DAPHNE J. OSBORNE

1970-03-14T23:59:59.000Z

99

Comparative analysis of failure probability for ethylene cracking furnace tube using Monte Carlo and API RBI technology  

Science Journals Connector (OSTI)

Abstract Ethylene cracking furnace tube is one of the most critical components in the petrochemical industry to crack molecules at high temperature. The furnace tube degrades easily during operations which would cause equipment failure and lead to serious consequences, such as fire and explosion. In this work, a quantitative analysis of failure probability for the ethylene cracking furnace tube is performed using the Monte Carlo method and API Risk-Based Inspection (RBI) technology. The results have shown that the operation life of ethylene cracking furnace tube under interaction of creep and carburization is less than that under creep, and the failure probability calculated based on API RBI technology is lower than that using the Monte Carlo method. Moreover, the comparative analysis results prove further that creep and carburization are two main failure modes of the furnace tube rupture. Therefore, it is very necessary to provide reliable data to perform risk assessment and inspections on ethylene cracking furnace tube.

Wenhe Wang; Kaiwu Liang; Changyou Wang; Qingsheng Wang

2014-01-01T23:59:59.000Z

100

The tomato ethylene receptors NR and LeETR4 are negative regulators of ethylene response and exhibit  

E-Print Network [OSTI]

The tomato ethylene receptors NR and LeETR4 are negative regulators of ethylene response, 2000 (received for review December 16, 1999) The plant hormone ethylene is involved in many a family of ethylene receptors, desig- nated LeETR1, LeETR2, NR, LeETR4, and LeETR5, with homology

Klee, Harry J.

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Five components of the ethylene-response pathway identified in a screen for weak ethylene-insensitive  

E-Print Network [OSTI]

Five components of the ethylene-response pathway identified in a screen for weak ethylene) Five ethylene-insensitive loci (wei1­wei5) were identified by using a low-dose screen for ``weak'' ethylene-insensitive mutants. wei1, wei2, and wei3 seedlings showed hormone insensitivity only in roots

Ausubel, Frederick M.

102

Characterization of ETHYLENE INSENSITIVE SIX and the ENHANCER OF ETHYLENE INSENSITIVE in Arabidopsis thaliana.  

E-Print Network [OSTI]

??Ethylene is a gaseous plant hormone that affects diverse physiological processes throughout plant growth and development. These processes include seed germination, cell elongation, flower and (more)

Nehring, Ramlah Bliss

2007-01-01T23:59:59.000Z

103

THE PHYSIOLOGY OF ETHYLENE FORMATION IN APPLES  

Science Journals Connector (OSTI)

...were covered with water, the desiccator...stoppered under water. Respiration rates...purification by condensation and redistillation...temperature- controlled water baths. Figure 2...observed a similar recovery of ethylene production...sections kept under atmospheric conditions for 4...

Stanley P. Burg; Kenneth V. Thimann

1959-01-01T23:59:59.000Z

104

Ethylene Market Activity in the 1990s  

E-Print Network [OSTI]

Ethylene pricing and profitabillty has been on a roller coaster for the past 5 years, and it appears that the near term scenario will not change. Overly ambitious capacity building which occurred in the late 1970s, combined with industrial...

Field, S.; McCormack, G.

105

Ethylene plant commissioned at Corpus Christi  

SciTech Connect (OSTI)

Ethylene Plant Commissioned at Corpus Christi. Corpus Christi Petrochemical Co. has commissioned its $600 million ethylene plant at Corpus Christi, Tex. Plant capacities include 1.2 billion lb/yr of ethylene, 560 million lb/yr of propylene, 400 million lb/yr of crude butadiene mixture, 60 million gal of benzene, 45 million gal of gasoline blending components, and 50 million gal of fuel oils. The ethylene and propylene will be transported by pipeline to Houston for further processing. At the Corpus Christi facilities, process pressures range from full vacuum to 1800 psig, and process temperatures range from -260/sup 0/ to +1600/sup 0/F. The plant uses gas oil and naphtha as feedstock, but also has some flexibility to use ethane or LPG as feedstock. Stone and Webster Engineering Corp. engineered and Brown and Root Inc. built the plant.

Not Available

1984-01-01T23:59:59.000Z

106

A variable cluster of ethylene response factor-like genes regulates metabolic and developmental acclimation responses to submergence in rice.  

E-Print Network [OSTI]

A.M. (2003). Blocking ethylene perception enhances floodingNuclear events in ethylene signaling: A transcriptionalcascade mediated by ETHYLENE-INSENSITIVE3 and ETHYLENE-

Fukao, Takeshi; Xu, Kenong; Ronald, Pamela C; Bailey-Serres, Julia

2006-01-01T23:59:59.000Z

107

Interactions between ethylene, CO/sub 2/, and ABA on GA/sub 3/-induced amylase synthesis in barley aleurone tissue. [Hordeum vulgare cv Himalaya  

SciTech Connect (OSTI)

Gibberellic acid-induced synthesis and release of ..cap alpha..-amylase in barley aleurone tissue was inhibited by abscisic acid. This inhibition was relieved by simultaneous application of ethylene ranging in concentration from 0.1 to 100 microliters per liter. When CO/sub 2/ was applied, it eliminated the effect of 0.1 microliter per liter ethylene and reimposed the abscisic acid inhibition. All concentrations of CO/sub 2/ tested from 400 to 10/sup 5/ microliters per liter counteracted the effect of 0.1 microliter per liter ethylene, but had no observable effect on any higher concentration of ethylene. The results indicate that some processes necessary for embryo growth may be subject to regulation by ethylene and carbon dioxide at naturally occurring concentrations of the gases.

Tittle, F.L.; Spencer, M.S.

1986-04-01T23:59:59.000Z

108

Adsorption of Ethylene on Neutral, Anionic and Cationic Gold Clusters  

E-Print Network [OSTI]

The adsorption of ethylene molecule on neutral, anionic and cationic gold clusters consisting of up to 10 atoms has been investigated using density-functional theory. It is demonstrated that C2H4 can be adsorbed on small gold clusters in two different configurations, corresponding to the pi- and di-sigma-bonded species. Adsorption in the pi-bonded mode dominates over the di-sigma mode over all considered cluster sizes n, with the exception of the neutral C2H4-Au5 system. A striking difference is found in the size-dependence of the adsorption energy of C2H4 bonded to the neutral gold clusters in the pi and di-sigma configurations. The important role of the electronic shell effects in the di-sigma mode of ethylene adsorption on neutral gold clusters is demonstrated. It is shown that the interaction of C2H4 with small gold clusters strongly depends on their charge. The typical shift in the vibrational frequencies of C2H4 adsorbed in the pi- and the di-sigma configurations gives a guidance to experimentally disti...

Lyalin, Andrey

2009-01-01T23:59:59.000Z

109

Intentional Ethylene Glycol Poisoning Increase after Media Coverage of Antifreeze Murders  

E-Print Network [OSTI]

R eport Intentional Ethylene Glycol Poisoning Increase afterA sensational murder by ethylene glycol (EG) poisoningreport linking a death to ethylene glycol to shortly after

Morgan, Brent W; Geller, Robert J; Kazzi, Ziad

2011-01-01T23:59:59.000Z

110

Reaction of ethylene with oxygen adsorbed on a silver film. Dependence of the selectivity to ethylene oxide on the ethylene pressure  

Science Journals Connector (OSTI)

Kinetics of the reaction of ethylene with oxygen adsorbed on a silver film ... with oxygen close to 0.8 and initial ethylene pressures of 1.1 and 4.4 Pa. The ethylene oxide selectivity was found to increase with ...

A. V. Khasin

1998-07-01T23:59:59.000Z

111

A model of particle nucleation in premixed ethylene flames  

SciTech Connect (OSTI)

A detailed model of particle inception is proposed to delve into the physical structure and chemistry of combustion-formed particles. A sectional method is used, from a previously developed kinetic mechanism of particle formation with a double discretization of the particle phase in terms of C and H atom number. The present model also distinguishes between different particle structures based on their state of aggregation; single high molecular mass molecules, cluster of molecules and aggregates of clusters. The model predicts the mass of particles, hydrogen content and internal structure. It represents a first approach in following the chemical evolution and internal structure of the particles formed in flames, coupled with the main pyrolysis and oxidation of the fuel. The model is tested in atmospheric premixed flat flames of ethylene and the effect of fuel equivalence ratio on particle morphology is analyzed. Molecular weight growth of aromatic compounds and the inception of particles are predicted. The morphology of the particles and the number of molecules in the clusters at particle inception are also indicated. (author)

D'Anna, Andrea; Sirignano, Mariano [Dipartimento di Ingegneria Chimica, Universita di Napoli ''Federico II'', Napoli (Italy); Kent, John [School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney (Australia)

2010-11-15T23:59:59.000Z

112

Ethylene oxides as hydrogen storage material with pockets in the electronic binding energy distribution  

Science Journals Connector (OSTI)

Using ab initio calculations, we have found that the oxygen atoms in oligomers of ethylene oxide have optimal binding with hydrogen molecules for hydrogen storage. Our theoretical model and molecular-dynamics simulations predict that adsorption-desorption process for such a candidate material occurs under unprecedented ambient conditions, T?300?K and P=113?atm, achieving gravimetric storage capacity of hydrogen up to 6.2?wt?%. We have also uncovered the special binding mechanism between a hydrogen molecule and an oxygen-embedded material which is enhanced by electron donation and back-donation.

Sungjong Woo and Young-Kyun Kwon

2009-02-02T23:59:59.000Z

113

Liquefaction of H2 molecules upon exterior surfaces of carbon nanotube Sang Soo Han, Jeung Ku Kang, and Hyuck Mo Leea  

E-Print Network [OSTI]

of the Department of En- ergy: namely that hydrogen fuel cell cars require a hydrogen capacity of 6.5 wt % to match-range electrostatic interactions of polarized charges on the deformed CNT bundle with hydrogen molecules are observed to induce a high local-ordering of H2 gas that results in hydrogen liquefaction. Our predicted heat

Goddard III, William A.

114

Ethylene-induced volatile inhibitors causing soil fungistasis  

Science Journals Connector (OSTI)

... To test the hypothesis that ethylene is the main inhibitor involved in soil fungistasis5, nutrient-free water agar disks 2 ... oligospora were incubated at 22 C in atmospheres containing up to 50% (v/v) ethylene ( ...

C. BALIS

1976-01-15T23:59:59.000Z

115

Ethylene Production and Lipid Mobilization during Germination of Castor Beans  

Science Journals Connector (OSTI)

... the seeds twenty of those showing signs of germination were selected for measurement of subsequent ethylene evolution. To determine the ... evolution. To determine the ethylene production during the first few days after wetting, separate gas collections were made from ...

MARY SPENCER; A. O. OLSON

1965-02-13T23:59:59.000Z

116

NOVEL FUNCTIONAL ETHYLENE/PROPYLENE ELASTOMERS: SYNTHESIS AND CHARACTERIZATION.  

E-Print Network [OSTI]

??AbstractThis thesis discusses novel chemical approaches to prepare functional ethylene/propylene elastomers. The chemistry involves the preparation of poly(ethylene-co-propylene) reactive intermediate in which the reactive groups (more)

Kandil, Usama

2005-01-01T23:59:59.000Z

117

Molecular analysis of ethylene signal transduction in tomato  

E-Print Network [OSTI]

The plant hormone ethylene plays an important role in plant growth, development, and physiology. One of the critical components of the ethylene signal transduction pathway, ctr1 (constitutive triple response), was identified using a particularly...

Adams-Phillips, Lori C.

2005-02-17T23:59:59.000Z

118

Toolbox Safety Talk Ethylene Oxide (EtO) Awareness  

E-Print Network [OSTI]

Toolbox Safety Talk Ethylene Oxide (EtO) Awareness Environmental Health & Safety Facilities Safety-in sheet to Environmental Health & Safety for recordkeeping. Ethylene Oxide (EtO) is used during hospital REQUIREMENTS Because of the severe potential health effects of Ethylene Oxide (EtO) all Cornell members

Pawlowski, Wojtek

119

Monitoring of ethylene by a pulsed quantum cascade laser  

E-Print Network [OSTI]

Monitoring of ethylene by a pulsed quantum cascade laser Damien Weidmann, Anatoliy A. Kosterev ethylene C2H4 concentrations by use of a rotational component of the fundamental 7 band. The laser.5960, 300.6320. 1. Introduction The detection of ethylene C2H4 at trace levels is important in a number

120

Scientific Correspondence ETHYLENE RESPONSE 1 Histidine Kinase Activity  

E-Print Network [OSTI]

Scientific Correspondence ETHYLENE RESPONSE 1 Histidine Kinase Activity of Arabidopsis Promotes General Hospital, Department of Genetics, Harvard Medical School, Boston, Massachusetts 02114 ETHYLENE RESPONSE 1 (ETR1) is one of five receptors for the plant hormone ethylene (Bleecker et al., 1988; Chang et

Sheen, Jen

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Circadian Rhythms of Ethylene Emission in Arabidopsis1[w  

E-Print Network [OSTI]

Circadian Rhythms of Ethylene Emission in Arabidopsis1[w] Simon C. Thain2,3 , Filip Vandenbussche2 of California, Los Angeles, California 90095­1606 (Z.-Y.W., E.M.T.) Ethylene controls multiple physiological processes in plants, including cell elongation. Consequently, ethylene synthesis is regulated by internal

Tobin, Elaine

122

Influence of Ionic Surfactants on the Aggregation of Poly(Ethylene Oxide)-Poly(Propylene Oxide)-Poly(Ethylene Oxide) Block Copolymers Studied by Differential Scanning and  

E-Print Network [OSTI]

Influence of Ionic Surfactants on the Aggregation of Poly(Ethylene Oxide)-Poly(Propylene Oxide)-Poly(Ethylene copolymers of poly(ethylene oxide) and poly(propylene oxide), EOnPOmEOn, and the ionic surfactants sodium the aggregates of all three polymers. Introduction Water-soluble poly(ethylene oxide)-poly(propylene oxide)- poly(ethylene

Loh, Watson

123

Spectrum of the Flame of Ethylene  

Science Journals Connector (OSTI)

1 December 1934 research-article Spectrum of the Flame of Ethylene W. M. Vaidya The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. www.jstor.org

1934-01-01T23:59:59.000Z

124

Rate dependent finite deformation stressstrain behavior of an ethylene methacrylic acid copolymer and an ethylene methacrylic acid butyl  

E-Print Network [OSTI]

Rate dependent finite deformation stress­strain behavior of an ethylene methacrylic acid copolymer and an ethylene methacrylic acid butyl acrylate copolymer S. Deschanel a,*, B.P. Greviskes a , K. Bertoldi a , S dependence a b s t r a c t The large strain deformation behaviors of an ethylene methacrylic acid (EMAA

125

Investigation of Self-Assembly and Micelle Polarity for a Wide Range of Ethylene Oxide-Propylene Oxide-Ethylene  

E-Print Network [OSTI]

Investigation of Self-Assembly and Micelle Polarity for a Wide Range of Ethylene Oxide-Propylene Oxide-Ethylene Oxide Block Copolymers in Water Josias R. Lopes and Watson Loh* Instituto de Qui of 15 EO-PO-EO (EO ) ethylene oxide, PO ) propylene oxide) block copolymers by using three different

Loh, Watson

126

Abstract An ethylene-inducing xylanase (EIX) from Tricohoderma viride is a potent elicitor of ethylene bio-  

E-Print Network [OSTI]

Abstract An ethylene-inducing xylanase (EIX) from Tricohoderma viride is a potent elicitor of ethylene bio- synthesis, localized cell death and other defense respons- es in specific cultivars in ethylene biosynthesis and the induc- tion of localized cell death. The F2 progeny of the above mentioned

Avni, Adi

127

Single molecule spectroscopy of tetrahedral oligophenylenevinylene molecules  

E-Print Network [OSTI]

Single molecule spectroscopy of tetrahedral oligophenylenevinylene molecules Melissa A. Summers form 17 July 2002 Abstract We probe the fluorescence from single molecules of a new class molecules and compare these signals with the fluorescence from single arm molecules. Our results show

Buratto, Steve

128

Los Alamos scientists detect and track single molecules with...  

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

Nanotube "glowsticks" transform surface science tool kit Los Alamos scientists detect and track single molecules with nanoscale carbon cylinders Researchers have now shown that...

129

Ethylene adsorbed on Ni(110): An experimental and theoretical determination of the two-dimensional band structure  

Science Journals Connector (OSTI)

We have investigated the saturated ethylene layer on Ni(110) by low-energy electron diffraction (LEED), angle-resolved ultraviolet photoemission spectroscopy (ARUPS), and near-edge x-ray-absorption fine structure (NEXAFS). This layer exhibits a c(24) LEED pattern that corresponds to a structure containing two adsorbates per primitive unit cell. The ethylene molecules are adsorbed with the molecular plane parallel to the surface and the C-C axis preferentially aligned along the [110] direction of the substrate, as is independently determined from the ARUPS and NEXAFS experiments. The two-dimensional (2D) adsorbate band structure is determined from the ARUPS spectra at various photon energies. Except for the ? orbital, all ethylene-derived bands show significant dispersion (up to 2 eV), but no splitting as would be expected for a structure with two molecules per unit cell. The experimentally determined band structure is reproduced in all details by extended-Hckel-theory calculations for an unsupported ethylene layer. The structural model derived from LEED, ARUPS, and NEXAFS is confirmed both by force field and by the 2D band-structure calculations. This indicates that the adsorbate-adsorbate interactions are essentially decoupled from the adsorbate-substrate interaction, that is responsible for the chemisorption bond.

M. Weinelt; W. Huber; P. Zebisch; H.-P. Steinrck; B. Reichert; U. Birkenheuer; N. Rsch

1992-07-15T23:59:59.000Z

130

Surface species formed by the adsorption and dissociation of water molecules on Ru(0001) surface containing a small coverage of carbon atoms studied by scanning tunneling microscopy  

SciTech Connect (OSTI)

The adsorption and dissociation of water on a Ru(0001) surface containing a small amount ({le} 3 %) of carbon impurities was studied by scanning tunneling microscopy (STM). Various surface species are formed depending on the temperature. These include molecular H{sub 2}O, H{sub 2}O-C complexes, H, O, OH and CH. Clusters of either pure H{sub 2}O or mixed H{sub 2}O-OH species are also formed. Each of these species produces a characteristic contrast in the STM images and can be identified by experiment and by ab initio total energy calculations coupled with STM image simulations. Manipulation of individual species via excitation of vibrational modes with the tunneling electrons has been used as supporting evidence.

Dept of Materials Science and Engineering UCB; Dept of Applied Science and Technology, UCB; Institut de Ciencia de Materials de Barcelona, Barcelona, Spain; Instituto de Ciencia de Materiales de Madrid, Madrid, Spain; Department of Mechanical Engineering, Yale University; Salmeron, Miquel; Shimizu, Tomoko K.; Mugarza, Aitor; Cerda, Jorge I.; Heyde, Markus; Qi, Yabing; Schwarz, Udo D.; Ogletree, D. Frank; Salmeron, Miquel

2008-04-26T23:59:59.000Z

131

The flash pyrolysis and methanolysis of biomass (wood) for production of ethylene, benzene and methanol  

SciTech Connect (OSTI)

The process chemistry of the flash pyrolysis of biomass (wood) with the reactive gases, H{sub 2} and CH{sub 4} and with the non-reactive gases He and N{sub 2} is being determined in a 1 in. downflow tubular reactor at pressures from 20 to 1000 psi and temperatures from 600 to 1000{degrees}C. With hydrogen, flash hydropyrolysis leads to high yields of methane and CO which can be used for SNG and methanol fuel production. With methane, flash methanolysis leads to high yields of ethylene, benzene and CO which can be used for the production of valuable chemical feedstocks and methanol transportation fuel. At reactor conditions of 50 psi and 1000{degrees}C and approximately 1 sec residence time, the yields based on pine wood carbon conversion are up to 25% for ethylene, 25% for benzene, and 45% for CO, indicating that over 90% of the carbon in pine is converted to valuable products. Pine wood produces higher yields of hydrocarbon products than Douglas fir wood; the yield of ethylene is 2.3 times higher with methane than with helium or nitrogen, and for pine, the ratio is 7.5 times higher. The mechanism appears to be a free radical reaction between CH{sub 4} and the pyrolyzed wood. There appears to be no net production or consumption of methane. A preliminary process design and analysis indicates a potentially economical competitive system for the production of ethylene, benzene and methanol based on the methanolysis of wood. 10 refs., 18 figs., 1 tab.

Steinberg, M.; Fallon, P.T.; Sundaram, M.S.

1990-02-01T23:59:59.000Z

132

Activated carbon to the rescue  

SciTech Connect (OSTI)

This article describes the response to pipeline spill of ethylene dichloride (EDC) on the property of an oil company. Activated carbon cleanup proceedure was used. During delivery, changeout, transport, storage, thermal reactivation, and return delivery to the site, the carbon never came into direct contact with operating personnel or the atmosphere. More than 10,000 tones of dredge soil and 50 million gallons of surface water were processed during the emergency response.

Sen, S. [Calgon Carbon Corp., Pittsburgh, PA (United States)

1996-03-01T23:59:59.000Z

133

Crude oil to ethylene in one step  

SciTech Connect (OSTI)

Reports that the most important feature of the partial combustion cracking (PCC) process is its ability to convert heavy petroleum fractions to light olefins with minimum residue. Presents diagram of the PCC process; graph of feedstock cost vs. return on investment (ROI); and tables with average ethylene yields, cracking yields, and PCC vs. LPG and naphtha cracking. Finds that the 10% difference in capital between the PCC and the naphtha feed case is due mainly to the cost of the acid gas and sulfur handling sections required for the PCC, but not for a naphtha cracker. The very favorable ROI and ethylene costs are due to the relative difference in feedstock pricing. Sensitivity of ROI to changes in feedstock was also studied for the PCC cases. The ratio of cost of high-sulfur fuel oil (HSFO) to average crude price is used to indicate the substantial effect of feedstock price on the attractiveness of the project. Concludes that with HSFO at 85 to 100% of crude value, the PCC represents an excellent investment for future ethylene needs.

Kirk, R.O.

1983-02-01T23:59:59.000Z

134

Metal catalyzed synthesis of hyperbranched ethylene and/or .alpha.-olefin polymers  

DOE Patents [OSTI]

Oily hyperbranched polymers derived from ethylene, propylene, butene and/or a C.sub.5 -C.sub.24 .alpha.-olefin, and a method for their synthesis, are disclosed. The polymers have non-regular microstructures and are characterized by a ratio ({character pullout})of methyl hydrogens centered around 0.85 ppm on the 1H-NMR spectra of the polymers relative to total aliphatic hydrogens of from about 0.40 to about 0.65 for polymers derived from ethylene or butene, and a ratio ({character pullout})of from greater than 0.50 to about 0.65 for polymers derived from propylene. A method for grafting hyperbranched polymers derived from ethylene, propylene, butene and/or a C.sub.5 -C.sub.24 .alpha.-olefin onto aromatic rings in organic molecules and polymers, and the resulting grafted materials, are also disclosed. The hyperbranched polymers and grafted materials are useful, for example, as lubricants and lubricant additives.

Sen, Ayusman (State College, PA); Kim, Jang Sub (State College, PA); Pawlow, James H. (Gainesville, FL); Murtuza, Shahid (State College, PA); Kacker, Smita (Annandale, NJ); Wojcinski, III, Louis M. (State College, PA)

2001-01-01T23:59:59.000Z

135

Photo double ionization of ethylene and acetylene near threshold  

E-Print Network [OSTI]

Photo double ionization of ethylene and acetylene nearcomplete measurements of the photo double ionization ofkinetic energy of the photo electrons and the nuclear

Gaire, B.

2014-01-01T23:59:59.000Z

136

Economical analysis of a new gas to ethylene technology.  

E-Print Network [OSTI]

??Ethylene is one of the most important petrochemical intermediates and feedstocks for many different products. The motivating force of this work is to compare a (more)

Abedi, Ali Abdulhamid

2007-01-01T23:59:59.000Z

137

The Analysis of Altered Ethylene Response in Arabidopsis.  

E-Print Network [OSTI]

??Ethylene is a simple plant hormone involved in fruit ripening, tissue senescence, germination and pathogen response. The characteristic triple response phenotype in Arabidopsis has facilitated (more)

Alvarez, Ashley

2014-01-01T23:59:59.000Z

138

Regulation of ethylene biosynthesis via ACC synthase protein stability.  

E-Print Network [OSTI]

?? The gaseous plant hormone ethylene is involved in many plant processes including germination, leaf and flower abcission, cell elongation and inhibition, plant defense and (more)

Hansen, Maureen Elizabeth

2008-01-01T23:59:59.000Z

139

RELATIONSHIP BETWEEN ETHYLENE AND SEED DORMANCY RELEASE IN ECHINACEA SPECIES.  

E-Print Network [OSTI]

??Inconsistent seed germination poses a problem for efficient seedling production of Echinacea species. Evidence suggests that ethylene can be effective for improving germination in Echinacea (more)

Wood, Laura Anne

2007-01-01T23:59:59.000Z

140

Coke resistant coating technology for applications in ethylene pyrolysis heaters.  

E-Print Network [OSTI]

?? This dissertation begins with a description of the history of the events leading to ethylene pyrolysis tube failure. During service, hydrocarbons pass through the (more)

Chauhan, Alok Pratap Singh

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Novel Membrane Technology for Green Ethylene Production - Energy...  

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

Find More Like This Return to Search Novel Membrane Technology for Green Ethylene Production Argonne National Laboratory Contact ANL About This Technology

Dehydrogenation1:...

142

Coking phenomena in the pyrolysis of ethylene dichloride into vinyl chloride  

SciTech Connect (OSTI)

Pyrolysis of ethylene dichloride (EDC) into vinyl chloride (VCM) which is the monomer for polyvinyl chloride, one of the most popular polymers, has been established commercially for quite a time. The process around 500{degrees}C has been proved to give VCM of high purity at very high selectivity about 99% and a reasonable conversion about 50%. However, the coking is a major problem in the long run, requiring decoking treatment every two months. The present paper describes features of carbons produced in the pyrolysis process. Coke of respective features was found in the reactor, the transfer line, the heat exchanger and the rapid quencher. Typical pyrolytic carbon, anisotropic coke produced in the liquid phase, isotropic carbon was produced on the reactor wall as low as 500{degrees}C. The mechanisms for their formation are discussed.

Sotowa, Chiaki; Korai, Yozo; Mochida, Isao [Kyushu Univ., Kasuga, Fukuoka (Japan)] [and others

1995-12-31T23:59:59.000Z

143

Ultrafast Infrared Heating Laser Pulse-Induced Micellization Kinetics of Poly(ethylene oxide)-Poly(propylene oxide)-Poly(ethylene oxide) in  

E-Print Network [OSTI]

Ultrafast Infrared Heating Laser Pulse-Induced Micellization Kinetics of Poly(ethylene oxide)-Poly(propylene oxide)-Poly(ethylene oxide) in Water Xiaodong Ye, Yijie Lu, Shilin Liu,*, Guangzhao Zhang, and Chi Wu-induced micellization of poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (Pluronic PE10300) triblock

Liu, Shilin

144

Structural and morphological development in poly(ethylene-co-hexene) and poly(ethylene-co-butylene) blends due to the competition between  

E-Print Network [OSTI]

Structural and morphological development in poly(ethylene-co-hexene) and poly(ethylene 30 November 2004; accepted 12 January 2005 Abstract Isothermal crystallization behavior of poly(ethylene-co-hexene) (PEH) and the 50/50 blend (H50) of PEH with amorphous poly(ethylene- co-butylene) (PEB) was studied

Wang, Howard "Hao"

145

Ethylene Glycol and Glycolic Acid in Postmortem Blood from Fatal Poisonings  

Science Journals Connector (OSTI)

......October 2009 research-article Articles Ethylene Glycol and Glycolic Acid in Postmortem...Medical Services, Waterford, New York Ethylene glycol (EG), a relatively infrequent...forensic application of the method. Ethylene glycol and glycolic acid in postmortem......

Thomas G. Rosano; Thomas A. Swift; Christopher J. Kranick; Michael Sikirica

2009-10-01T23:59:59.000Z

146

PEGylated poly(ethylene imine) as a copolymer for gene delivery from hyaluronic acid hydrogels  

E-Print Network [OSTI]

compatibility of poly(ethylene imine) for lung application:Suh H, Park JS. Effect of poly (ethylene glycol) grafting onet al. PEGylation of Poly(ethylene imine) Affects Stability

Siegman, Shayne Nicholas

2014-01-01T23:59:59.000Z

147

A Progress Report A Comprehensive Kinetic Model of Ethylene and Acetylene  

E-Print Network [OSTI]

A Progress Report on A Comprehensive Kinetic Model of Ethylene and Acetylene Oxidation at High. Simulation of Shock-Tube Experiments .....................................................15 5.1. Ethylene Tubes .............................................16 5.3. Mechanisms of Acetylene and Ethylene

Wang, Hai

148

Ethylene Interacts with Abscisic Acid to Regulate Endosperm Rupture during Germination: A Comparative Approach Using  

E-Print Network [OSTI]

Ethylene Interacts with Abscisic Acid to Regulate Endosperm Rupture during Germination relatives Lepidium sativum and Arabidopsis thaliana showing that ethylene biosynthesis and signaling, and transcriptome analyses. We show that ethylene promotes endosperm cap weakening of Lepidium and endosperm rupture

Leubner, Gerhard

149

Single-Molecule Circuits with Well-Defined Molecular Conductance  

E-Print Network [OSTI]

Single-Molecule Circuits with Well-Defined Molecular Conductance Latha Venkataraman,*,,| Jennifer E conductance measurements of single molecules. For an alkane diamine series with 2-8 carbon atoms leads to well-defined conductance measurements of a single molecule junction in a statistical study

Hone, James

150

Northern U. K. NGL, ethylene systems expand  

SciTech Connect (OSTI)

Construction culminated last year along a 994-mile, gas-liquids pipeline and processing system from the northern and central North Sea to the Stanlow petrochemical complex in the west of England. The paper describes the major additions to the system; plans for the Scottish Area Gas Evacuation (SAGE) system; the terminal facilities at St. Fergus, located north of Aberdeen, the hub for the gas-liquids system; the expansion of the Mossmorran NGL plant; and Shell's new 256-mile North Western Ethylene Pipeline from Grangemouth, Scotland to Stanlow, England.

True, W.R.

1993-03-08T23:59:59.000Z

151

The oxidation of ethylene glycol by a salt-requiring bacterium  

E-Print Network [OSTI]

sources Authentication of 1, 2-14C-ethylene glycol Growth measurements Growth studies Respiration studies Respiration of ethylene glycol, glycolic acid, and glyoxylic acid Respiration of 1, 2-14C-ethylene glycol Enzyme assays Identification... of labelled compounds from cell-free preparations exposed to 14C-ethylene glycol RESULTS AND DISCUSSION Growth studies Respiration studies Respiration of ethylene glycol, glycolic acid, and glyoxylic acid Respiration of 1, 2-14C-ethylene glycol Enzyme...

Caskey, William Horton

2012-06-07T23:59:59.000Z

152

Ethylene on graphite: A low-energy electron-diffraction study  

Science Journals Connector (OSTI)

Several phases of monolayer ethylene on single-crystal graphite have been studied using low-energy electron diffraction. We have determined the unit cell and orientation with respect to the graphite substrate of the orientationally ordered and disordered low-density phases (OLD and DLD), in which molecules are believed to lie with the C?C bond parallel to the surface. Based on published neutron-scattering results, we propose a basis for the OLD phase. The low-coverage DLD phase, believed to undergo a continuous melting transition at 70 K, appears to be a higher-order commensurate structure at this transition. We also report observations of ordered and disordered high-density phases in which molecules stand on end, in both commensurate and incommensurate epitaxies.

V. L. Eden and S. C. Fain; Jr.

1991-05-01T23:59:59.000Z

153

Pathogen-Triggered Ethylene Signaling Mediates Systemic-Induced Susceptibility to Herbivory in ArabidopsisW  

E-Print Network [OSTI]

Pathogen-Triggered Ethylene Signaling Mediates Systemic-Induced Susceptibility to Herbivory-triggered ethylene signaling, respectively. SIS to herbivory is, in turn, counteracted by a combination

Pierce, Naomi E.

154

Ethylene signalling during flower development and senescence in carnations (Dianthus caryophyllus L.).  

E-Print Network [OSTI]

??The plant hormone ethylene plays an important role in numerous plant growth and developmental processes, including flower development and senescence. Once perceived by ethylene receptors, (more)

Iordachescu, Mihaela.

2007-01-01T23:59:59.000Z

155

Ethylene produced by Plant Cells in Suspension Cultures  

Science Journals Connector (OSTI)

... sterile 1 ml. syringes through a sidearm stoppered with a serum rubber stopper. The ethylene was measured by gas chromatography on a Varian Aerograph Model 204(7, using a ... ml./min and the temperature of the column was 35 C. The presence of ethylene was confirmed on a similar column packed with activated alumina at 45 C and helium ...

O. L. GAMBORG; T. A. G. LARUE

1968-11-09T23:59:59.000Z

156

Ethylene Glycol as a Preservative for Marine Organisms  

Science Journals Connector (OSTI)

... Ethylene glycol (glycol, ethane diol) was first used in this laboratory as an additive ... to prevent complete drying-out. Glycerol is frequently used for the same purpose, but ethylene glycol has the advantage that its osmotic reactions are less violent and therefore stronger solutions ...

D. I. WILLIAMSON; G. RUSSELL

1965-06-26T23:59:59.000Z

157

14C-ethylene incorporation and metabolism in pea seedlings  

Science Journals Connector (OSTI)

... was purified twice by gas chromatography (GC) and first separated on a silver nitrate ethylene glycol-coated Gas Chrom R column11 at 0 C. The ... glycol-coated Gas Chrom R column11 at 0 C. The ethylene fraction was collected and further purified using the same technique on a Poropak T column ...

ELMO BEYER

1975-05-08T23:59:59.000Z

158

Ethylene Production by Sub-Cellular Particles from Tomatoes  

Science Journals Connector (OSTI)

... ETHYLENE has been identified as the main olefinic A_^ volatile produced by fruits during ripening1 ... controversy has developed regarding attempts by many laboratories to prepare cell-free systems capable of ethylene evolution. Early work in this field suffered from lack of a sensitive, specific method ...

G. RAM CHANDRA; MARY SPENCER

1962-04-28T23:59:59.000Z

159

Price dynamics of crude oil and the regional ethylene markets  

Science Journals Connector (OSTI)

This paper is the first attempt to investigate: (i) is the crude oil (WTI) price significantly related to the regional ethylene prices in the Naphtha intensive ethylene markets of the Far East, North West Europe, and the Mediterranean? (ii) What drives the regional ethylene prices? The paper is motivated by the recent and growing debate on the lead-lag relationship between crude oil and ethylene prices. Our findings, based on the long-run structural modelling approach of Pesaran and Shin, and subject to the limitations of the study, tend to suggest: (i) crude oil (WTI) price is cointegrated with the regional ethylene prices (ii) our within-sample error-correction model results tend to indicate that although the ethylene prices in North West Europe and the Mediterranean were weakly endogenous, the Far East ethylene price was weakly exogenous both in the short and long term. These results are consistent, during most of the period under review (2000.12006.4) with the surge in demand for ethylene throughout the Far East, particularly in China and South Korea. However, during the post-sample forecast period as evidenced in our variance decompositions analysis, the emergence of WTI as a leading player as well, is consistent with the recent surge in WTI price (fuelled mainly, among others, by the strong hedging activities in the WTI futures/options and refining tightness) reflecting the growing importance of input cost in determining the dynamic interactions of input and product prices.

Mansur Masih; Ibrahim Algahtani; Lurion De Mello

2010-01-01T23:59:59.000Z

160

Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen  

Science Journals Connector (OSTI)

...methane conversion reached a...1% and ethylene selectivity...made from methanol, which...natural gas conversion (6, 7...16% and ethylene selectivity...based on Mo/zeolites catalyze...the zeolite pores yields benzene...although a small amount of coke...NPs with a size of ~3 to...

Xiaoguang Guo; Guangzong Fang; Gang Li; Hao Ma; Hongjun Fan; Liang Yu; Chao Ma; Xing Wu; Dehui Deng; Mingming Wei; Dali Tan; Rui Si; Shuo Zhang; Jianqi Li; Litao Sun; Zichao Tang; Xiulian Pan; Xinhe Bao

2014-05-09T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Economical analysis of a new gas to ethylene technology  

E-Print Network [OSTI]

Ethylene is one of the most important petrochemical intermediates and feedstocks for many different products. The motivating force of this work is to compare a new process of ethylene production developed at Texas A&M University to the most common...

Abedi, Ali Abdulhamid

2007-09-17T23:59:59.000Z

162

Leak detection on an ethylene pipeline  

SciTech Connect (OSTI)

A model-based leak detection system has been in operation on the Solvay et Cie ethylene pipeline from Antwerp to Jemeppe on Sambre since 1989. The leak detection system, which is the commercial product PLDS of Modisette Associations, Inc., was originally installed by the supplier. Since 1991, all system maintenance and configuration changes have been done by Solvay et Cie personnel. Many leak tests have been performed, and adjustments have been made in the configuration and the automatic tuning parameters. The leak detection system is currently able to detect leaks of 2 tonnes/hour in 11 minutes with accurate location. Larger leaks are detected in about 2 minutes. Leaks between 0.5 and 1 tonne per hour are detected after several hours. (The nominal mass flow in the pipeline is 15 tonnes/hour, with large fluctuations.) Leaks smaller than 0.5 tonnes per hour are not detected, with the alarm thresholds set at levels to avoid false alarms. The major inaccuracies of the leak detection system appear to be associated with the ethylene temperatures.

Hamande, A.; Condacse, V.; Modisette, J.

1995-12-31T23:59:59.000Z

163

New system pinpoints leaks in ethylene pipeline  

SciTech Connect (OSTI)

A model-based leak detection, PLDS, developed by Modisette Associates, Inc., Houston has been operating on the Solvay et Cie ethylene pipeline since 1989. The 6-in. pipeline extends from Antwerp to Jemeppe sur Sambre, a distance of 73.5 miles and is buried at a depth of 3 ft. with no insulation. Except for outlets to flares, located every 6 miles for test purposes, there are no injections or deliveries along the pipeline. Also, there are block valves, which are normally open, at each flare location. This paper reviews the design and testing procedures used to determine the system performance. These tests showed that the leak system was fully operational and no false alarms were caused by abrupt changes in inlet/outlet flows of the pipeline. It was confirmed that leaks larger than 2 tonnes/hr. (40 bbl/hr) are quickly detected and accurately located. Also, maximum leak detection sensitivity is 1 tonne/hr. (20 bbl/hr) with a detection time of one hour. Significant operational, configuration, and programming issues also were found during the testing program. Data showed that temperature simulations needed re-examining for improvement since accurate temperature measurements are important. This is especially true for ethylene since its density depends largely on temperature. Another finding showed the averaging period of 4 hrs. was too long and a 1 to 2 hr. interval was better.

Hamande, A. [Solvay et Cie, Jemeppe sur Sambre (Belgium); Condacse, V.; Modisette, J. [Modisette Associates, Inc., Houston, TX (United States)

1995-04-01T23:59:59.000Z

164

Sum frequency generation vibrational spectroscopy studies of adsorbates on Pt(111): Studies of CO at high pressures and temperatures, coadsorbed with olefins and its role as a poison in ethylene hydrogenation  

SciTech Connect (OSTI)

High pressure high temperature CO adsorption and coadsorption with ethylene and propylene on Pt(111) was monitored in situ with infrared-visible sum frequency generation (SFG). At high pressures and high temperatures, CO dissociates on a Pt(111) surface to form carbon. At 400 torr CO pressure and 673K, CO modifies the Pt(111) surface through a carbonyl intermediate, and dissociates to leave carbon on the surface. SFG was used to follow the CO peak evolution from monolayer adsorption in ultra high vacuum (UHV) to 400 torr CO pressure. At this high pressure, a temperature dependence study from room temperature to 823K was carried out. Auger electron spectroscopy was used to identify carbon on the surface CO coadsorption with ethylene and CO coadsorption with propylene studies were carried out with 2-IR 1-visible SFG. With this setup, two spectral ranges covering the C-H stretch range and the CO stretch range can be monitored simultaneously. The coadsorption study with ethylene reveals that after 5L ethylene exposure on a Pt(111) surface to form ethylidyne , CO at high pressures cannot completely displace the ethylidyne from the surface. Instead, CO first adsorbs on defect sites at low pressures and then competes with ethylidyne for terrace sites at high pressures. Propylene coadsorption with CO at similar conditions shows that propylidyne undergoes conformation changes with increased CO pressure and at 1 torr, is absent from the Pt(111) surface. Experiments on CO poisoning of ethylene hydrogenation was carried by 2-IR 1-visible SFG. At 1 torr CO,10 torr ethylene and 100 torr hydrogen, CO was found to block active sites necessary for ethylene hydrogenation, Above 425K, CO desorbs from the surface to allow ethylene hydrogenation to occur. The gas phase species were monitored by gas chromatography.

Kung, Kyle Yi

2000-12-31T23:59:59.000Z

165

Single Molecule Detection of Nanomechanical Motion  

Science Journals Connector (OSTI)

We investigate theoretically how single molecule spectroscopy techniques can be used to perform fast and high resolution displacement detection and manipulation of nanomechanical oscillators, such as singly clamped carbon nanotubes. We analyze the possibility of real time displacement detection by the luminescence signal and of displacement fluctuations by the degree of second order coherence. Estimates of the electromechanical coupling constant indicate that intriguing regimes of strong backaction between the two-level system of a molecule and the oscillator can be realized.

Vadim Puller; Brahim Lounis; Fabio Pistolesi

2013-03-19T23:59:59.000Z

166

OMV studies ethylene expansion in Germany  

SciTech Connect (OSTI)

OMV(Vienna) is evaluating plans to debottleneck its ethylene plant at Burghausen from 310,000 m.t./year to at least 400,000 m.t./year. Senior v.p. Jochen Berger says OMV is studying the limits to which the cracker can be expanded. {open_quotes}We`re pretty sure we can go to 400,000 m.t./year, but in two months we`ll have a better idea,{close_quotes} says Berger. The expansion will also depend on the future requirements of downstream operations at the Burghausen site, which include OMV plastics subsidiary PCD`s high-density polyethylene and polypropylene units and the vinyl chloride monomer and polyvinyl chloride units operated by Hoechst-Wacker joint venture Vinnolit.

NONE

1996-10-23T23:59:59.000Z

167

Plants having modified response to ethylene  

DOE Patents [OSTI]

The invention includes transformed plants having at least one cell transformed with a modified ETR nucleic acid. Such plants have a phenotype characterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tissue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype. 31 figs.

Meyerowitz, E.M.; Chang, C.; Bleecker, A.B.

1997-11-18T23:59:59.000Z

168

Plants having modified response to ethylene  

DOE Patents [OSTI]

The invention includes transformed plants having at least one cell transformed with a modified ETR nucleic acid. Such plants have a phenotype characterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tissue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype.

Meyerowitz, Elliot M. (Pasadena, CA); Chang, Caren (Pasadena, CA); Bleecker, Anthony B. (Madison, WI)

1998-01-01T23:59:59.000Z

169

Plants having modified response to ethylene  

DOE Patents [OSTI]

The invention includes transformed plants having at least one cell transformed with a modified ETR nucleic acid. Such plants have a phenotype characterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tissue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype.

Meyerowitz, Elliott M. (Pasadena, CA); Chang, Caren (Pasadena, CA); Bleecker, Anthony B. (Madison, WI)

1997-01-01T23:59:59.000Z

170

Gas and Vapor Solubility in Cross-Linked Poly(ethylene Glycol Diacrylate)  

Science Journals Connector (OSTI)

Gas separation using polymeric membranes has grown significantly since the 1980s, and polymer membranes now compete successfully with conventional gas separation technologies, such as cryogenic distillation, absorption, and pressure-swing adsorption (PSA) in certain applications, such as hydrogen recovery from nitrogen in ammonia purge gas streams, hydrogen separation from methane in refinery off-gases and hydrogen removal from carbon monoxide in synthesis gas, nitrogen enrichment from air, and removal of acid gases (e.g., CO2) from natural gas. ... Chemical purity (99%) cylinders of methane, ethane, ethylene, propane, and propylene were received from Air Liquide America Corporation (Houston, TX), and 99.9% carbon dioxide was received from Air Gas Southwest Inc. (Corpus Christi, TX). ... of gaseous mixts. in the coming decade. ...

Haiqing Lin; Benny D. Freeman

2005-09-10T23:59:59.000Z

171

Highly selective catalytic process for synthesizing 1-hexene from ethylene  

DOE Patents [OSTI]

Ethylene is trimerized to form 1-hexene, at a selectivity of up to about 99 mole percent, by contacting ethylene, at an ethylene pressure of from about 200-1500 psig and at a reaction temperature of from about 0.degree. C. to about 100.degree. C., with a catalyst comprising a tantalum compound (e.g., TaCl.sub.5) and a alkylating component comprising a metal hydrocarbyl compound or a metal hydrocarbyl halide compound (e.g., Sn(CH.sub.3).sub.4).

Sen, Ayusman (State College, PA); Murtuza, Shahid (Chicago, IL); Harkins, Seth B. (Pasadena, CA); Andes, Cecily (State College, PA)

2002-01-01T23:59:59.000Z

172

Study on the pyrolysis of Moroccan oil shale with poly (ethylene terephthalate)  

Science Journals Connector (OSTI)

Investigations into the pyrolytic behaviours of oil shale, poly (ethylene terephthalate) (PET) and...

A. Aboulkas; K. El Harfi; A. El Bouadili

2010-04-01T23:59:59.000Z

173

Ethylene-orchestrated circuitry coordinates a seedling's response to soil cover and  

E-Print Network [OSTI]

Ethylene-orchestrated circuitry coordinates a seedling's response to soil cover and etiolated seedlings' ethylene production, and an EIN3/EIN3-like 1­dependent ethylene-response cascade is required role of ethylene in orches- trating organ-specific soil responses in Arabidopsis seedlings. plant

Deng, Xing-Wang

174

Supporting Information for Spectral studies of a Cr(PNP)-MAO system for selective ethylene  

E-Print Network [OSTI]

Supporting Information for Spectral studies of a Cr(PNP)-MAO system for selective ethylene and Characterization S2-S4 Spectroscopic Studies of MAO Activation S4-S5 Ethylene Trimerization Trials S5-S6 Scheme S1 of ethylene S14 Table S1. Ethylene trimerization trials for 2/MAO in different solvents S15 Table S2. Summary

Martin, Alain

175

Ethylene-dependent salicylic acid regulates an expanded cell death response to a plant pathogen  

E-Print Network [OSTI]

Ethylene-dependent salicylic acid regulates an expanded cell death response to a plant pathogen are not well understood. We have previously shown that ethylene-insensitive tomato plants infected not accumulate in ethylene-insensitive plants. Exogenous feeding of SA to ethylene-de®cient plants restores

Klee, Harry J.

176

3002 Macromolecules 1994,27, 3002-3008 Morphology of Highly Textured Poly(ethylene)/  

E-Print Network [OSTI]

3002 Macromolecules 1994,27, 3002-3008 Morphology of Highly Textured Poly(ethylene)/ Poly(ethy1ene Manuscript Received February 22, 1994' ABSTRACT A series of semicrystalline diblock copolymers of poly(ethylene)/poly(ethylene ethylene chains was found to be perpendicular to the lamellar normals. Thisunusual chain alignment

Rubloff, Gary W.

177

Reactivity of ethylene oxide in contact with contaminants  

E-Print Network [OSTI]

Ethylene oxide (EO) is a very versatile compound with considerable energy in its ring structure. Its reactions proceed mainly via ring opening and are highly exothermic. Under some conditions, it is known to undergo a variety of reactions...

Dinh, Linh Thi Thuy

2009-05-15T23:59:59.000Z

178

Selective adsorption of ethylene over ethane and propylene over...  

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

adsorption of ethylene over ethane and propylene over propane in the metal-organic frameworks M2(dobdc) (M Mg, Mn, Fe, Co, Ni, Zn) Previous Next List Stephen J. Geier, Jarad A....

179

Oligo(ethylene glycol) chains: applications and advancements in biosensing.  

E-Print Network [OSTI]

??Oligo(ethylene glycol) groups have been used as substituents in poly(p-phenyleneethynylene)s (PPEs) to provide solubility, and to boost quantum yield. Properties such as water-solubility and increased (more)

Bryant, Jonathan James

2010-01-01T23:59:59.000Z

180

Coke profile and effect on methane/ethylene conversion process  

E-Print Network [OSTI]

balance in catalytic cracking. It is also extremely important in the dehydrogenation of butane to butadiene, because coke formation limits the cycle time before regeneration of the catalyst is needed. There are many add that equally important examples..., methane, ethane, ethylene, propane, iso-butane, butane, iso-pentane, pentane and hexanes. Also, the flow rate of the effluent stream is measured using the bubble meter. The mole percentages of methane and ethylene are subtracted of the effluent stream...

Al-Solami, Bandar

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Optimal operation of an ethylene plant utility system  

Science Journals Connector (OSTI)

The algorithm developed allows the selection of the pressure and temperature conditions of the high, medium and low pressure vapor headers and the deaerator pressure of an ethylene plant utility system. The utility system optimization can be done simultaneously with the ethylene plant optimization including four decision variables: Conversion and dilution ratio of the pyrolysis reactor, cracked-gas compressor inlet pressure and demethanizer column pressure. Their values are calculated, solving a Nonlinear Programming subproblem where the modeling equations of the utility system and the ethylene plant are considered. A rigorous simulation of the utility system is carried out using a water property prediction package. There is a strong integration between the ethylene plant and the utility system due to the generation of high steam pressure in the pyrolysis reactor or the use of residual gas as fuel gas in the boilers. The sensitivity of the profit function with respect to the ethylene and utility plant optimization variables is shown for different ethylene prices optimal solutions.

N. Petracci; A.M. Eliceche; A. Bandoni; E.A. Brignole

1993-01-01T23:59:59.000Z

182

Ethylene biosynthesis: Methionine as an in-vivo precursor of ethylene in auxin-treated mungbean hypocotyl segments  

Science Journals Connector (OSTI)

Ethylene production was induced in excised hypocotyl segments...14C-Methionine was efficiently incorporated into C2H4, although cold methionine added at substrate level did not enhance C2H4 production. Incorporat...

Shingo Sakai; Hidemasa Imaseki

183

Single-Molecule Detection  

Science Journals Connector (OSTI)

Detection of single molecules represents the ultimate level of sensitivity and ... background, fluorescence is one obvious choice for single-molecule detection (SMD). However, SMD using ... first report on SMD us...

2006-01-01T23:59:59.000Z

184

A comparative study of polyethylene oxide/nanoclay composite preparation via supercritical carbon dioxide and melt processing  

Science Journals Connector (OSTI)

The efficacy of supercritical carbon dioxide (ScCO2...) treatment compared with conventional melt processing methods in preparing nanoclay composites from poly(ethylene oxide) (PEO)...2 processing yielded more ho...

Gordon Armstrong; Keith Fortune

2007-10-01T23:59:59.000Z

185

Lithium Ethylene Dicarbonate Identified as the Primary Product of Chemical and Electrochemical Reduction of EC in EC:EMC/1.2M LiPF6 Electrolyte  

E-Print Network [OSTI]

of synthetic lithium ethylene dicarbonate. Figure 3.structure of lithium ethylene dicarbonate (A) and dimer (B).of: a. ) synthetic lithium ethylene dicarbonate; b. ) EC

Zhuang, Guorong V.; Xu, Kang; Yang, Hui; Jow, T. Richard; Ross Jr., Philip N.

2005-01-01T23:59:59.000Z

186

Dendrimer Templated Synthesis of One Nanometer Rh and Pt Particles Supported on Mesoporous Silica: Catalytic Activity for Ethylene and Pyrrole Hydrogenation.  

E-Print Network [OSTI]

2 H 2 CH 3 CH 3 Scheme 2. Ethylene Hydrogenation Reaction. HHydrogenation Reaction. Table 1 Ethylene Hydrogenation RatesCatalytic Activity for Ethylene and Pyrrole Hydrogenation

Huang, Wenyu

2009-01-01T23:59:59.000Z

187

Nanodevices for generating power from molecules and batteryless sensing  

DOE Patents [OSTI]

A nanoconverter or nanosensor is disclosed capable of directly generating electricity through physisorption interactions with molecules that are dipole containing organic species in a molecule interaction zone. High surface-to-volume ratio semiconductor nanowires or nanotubes (such as ZnO, silicon, carbon, etc.) are grown either aligned or randomly-aligned on a substrate. Epoxy or other nonconductive polymers are used to seal portions of the nanowires or nanotubes to create molecule noninteraction zones. By correlating certain molecule species to voltages generated, a nanosensor may quickly identify which species is detected. Nanoconverters in a series parallel arrangement may be constructed in planar, stacked, or rolled arrays to supply power to nano- and micro-devices without use of external batteries. In some cases breath, from human or other life forms, contain sufficient molecules to power a nanoconverter. A membrane permeable to certain molecules around the molecule interaction zone increases specific molecule nanosensor selectivity response.

Wang, Yinmin; Wang, Xianying; Hamza, Alex V.

2014-07-15T23:59:59.000Z

188

Ring size and strain as a control of reaction selectivity: ethylene sulfide on Mo(110)  

SciTech Connect (OSTI)

The adsorption and reaction of sulfur-containing organic on single-crystal transition-metal surfaces form a subject of current to the authors and others. The primary focus of their work is an investigation of how thermodynamic properties of adsorbate molecules affect the mechanism(s) by which they react. To this end, they have studied the reactions of two saturated cyclic sulfides-trimethylene sulfide (c-C/sub 3/H/sub 6/S) and tetrahydrothiophene (c-C/sub 4/H/sub 8/S)--on Mo(110). On the basis of these studies they proposed that ring strain in the cyclic sulfide controls reaction selectivity on Mo(110). This work concerns the reactions of a third cyclic sulfide, ethylene sulfide (c-C/sub 2/H/sub 4/S), on Mo(110). The results presented here demonstrate that ring size as well as ring strain determines the reaction selectivity of cyclic sulfides on Mo(110).

Roberts, J.T.; Friend, C.M.

1987-12-09T23:59:59.000Z

189

Infrared Spectra and Optical Constants of Astronomical Ices: II. Ethane and Ethylene  

E-Print Network [OSTI]

Infrared spectroscopic observations have established the presence of hydrocarbon ices on Pluto and other TNOs, but the abundances of such molecules cannot be deduced without accurate optical constants (n, k) and reference spectra. In this paper we present our recent measurements of near- and mid-infrared optical constants for ethane (C$_2$H$_6$) and ethylene (C$_2$H$_4$) in multiple ice phases and at multiple temperatures. As in our recent work on acetylene (C$_2$H$_2$), we also report new measurements of the index of refraction of each ice at 670 nm. Comparisons are made to earlier work where possible, and electronic versions of our new results are made available.

Hudson, R L; Moore, M H

2015-01-01T23:59:59.000Z

190

Morphological, rheological and electrochemical studies of Poly(ethylene  

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

Morphological, rheological and electrochemical studies of Poly(ethylene Morphological, rheological and electrochemical studies of Poly(ethylene oxide) electrolytes containing fumed silica nanoparticles Title Morphological, rheological and electrochemical studies of Poly(ethylene oxide) electrolytes containing fumed silica nanoparticles Publication Type Journal Article Year of Publication 2004 Authors Xie, Jiangbing, Robert G. Duan, Yong Bong Han, and John B. Kerr Journal Solid State Ionics Volume 175 Pagination 755-758 Keywords composite polymer electrolytes, nanoparticles, poly(ethylene oxide), rheology Abstract In this paper, the rheology and crystallization of composite Poly(ethylene oxide) (PEO) electrolytes were studied by dynamic mechanical analysis, DSC and polarized light microscopy. The effects of fumed silica nanoparticles on the conductivities of the polymer electrolytes at temperatures above and below their melting points were measured and related to their rheology and crystallization behavior, respectively. The electrolyte/electrode interfacial properties and cycling performances of the composite polymer electrolytes in Li/Li cells are also discussed. The measured electrochemical properties were found to depend heavily on the operational environments and sample processing history.

191

Sub1A is an ethylene-response-factor-like gene that confers submergence tolerance to rice.  

E-Print Network [OSTI]

and activator-type ethylene response factors functioning inJ. A variable cluster of ethylene responsive-like factorsTakagi, M. Arabidopsis ethylene-responsive element binding

2006-01-01T23:59:59.000Z

192

Experimental Study of Solubility of Natural Gas Components in Aqueous Solutions of Ethylene Glycol at Low-Temperature and High-Pressure Conditions  

Science Journals Connector (OSTI)

Solubility of natural gas components, for example, methane, nitrogen, and carbon dioxide, was measured in aqueous solutions of (40 and 60) mass % of ethylene glycol at (15.00 and 20.00) MPa and at temperatures of (?10.0, ... This eliminates the presence of air or other gases in the gasometer. ... The solubilities of CH4 in the diethylene glycol, water, and diethylene glycol-water solns. ...

Majid Abedinzadegan Abdi; Arshad Hussain; Kelly Hawboldt; Erika Beronich

2007-08-11T23:59:59.000Z

193

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Cool Magnetic Molecules Cool Magnetic Molecules Print Wednesday, 25 May 2011 00:00 Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

194

DFT studies of ethylene in femtosecond laser pulses  

E-Print Network [OSTI]

Using time-dependent density functional theory, applied to valence electrons, coupled non-adiabatically to molecular dynamics of the ions, we study the induced dynamics of ethylene subjected to the laser field. We demonstrate the reliable quality of such an approach in comparison to the experimental data on atomic and molecular properties. The impact of ionic motion on the ionization is discussed showing the importance of dealing with electronic and ionic degrees of freedom simultaneously. We explore the various excitation scenarios of ethylene as a function of the laser parameters. We find that the Coulomb fragmentation depends sensitively on the laser frequency. The high laser intensity can cause brute-force Coulomb explosion and the laser pulse length actually has influence on the excitation dynamics of ethylene.

Wang, Z P; Reinhard, P -G; Suraud, E; Zhang, F S

2009-01-01T23:59:59.000Z

195

Union Carbide pursuing direct conversion of methane to ethylene  

SciTech Connect (OSTI)

Union Carbide has begun developing an alternative source for ethylene. If a new program is successful, Carbide will be able to supplement present sources of ethylene by direct catalytic conversion of methane. The program also will provide an alternative means for possible future production of distillate motor fuels. Most ethylene consumed today is derived from dehydrogenation of ethane or propane. These sources are becoming increasingly tight, and alternatives are being sought by most polyethylene producers. Alternative sources have been on Carbide's research agenda at least since 1969, when the possibilities of converting methane were first examined. Following the Arab oil embargo of 1974 and the subsequent crude oil and natural gas price rises, most attention turned to coal conversion, at least in the U.S. However, inherent difficulties diminished the immediate prospects for utilizing coal as a source of fuels and petrochemical feedstocks.

Haggin, J.

1988-07-04T23:59:59.000Z

196

Single-Molecule Spectroscopy  

Science Journals Connector (OSTI)

We are used to conceptualizing chemical reactions and biochemical processes in terms of individual molecules. We do so on various levels of... molecular dynamics simulations ...

Benjamin Schuler

2013-01-01T23:59:59.000Z

197

Molecules Frozen Stiff | EMSL  

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

Frozen Stiff Molecules Frozen Stiff Cryogenic NMR, theory help prove validity of photosynthesis model Scientists at EMSL are using cryogenic NMR equipment and theory to...

198

The role of short-chain saturated fatty acids in the sensitivity of senescing carnation flowers to ethylene .  

E-Print Network [OSTI]

??Senescence of carnation flowers is accompanied by an increase in the sensitivity of the petals to ethylene. It appears that ethylene sensitivity during normal senescence (more)

Vasiljevic, Danica

2014-01-01T23:59:59.000Z

199

Detection of Ethylene Gas by Fluorescence Turn-On of a Conjugated Polymer  

E-Print Network [OSTI]

Ripe fruits: The fluorescence of a conjugated polymer is quenched by the presence of copper(I) moieties. Upon exposure to ethylene gas the copper complexes bind to ethylene and no longer quench the polymer fluorescence ...

Swager, Timothy Manning

200

Absorption Intensities of Ethylenes and Acetylenes in the Vacuum Ultraviolet  

Science Journals Connector (OSTI)

The spectra of three octenes cyclohexene and 2 3?dihydropyrane and of octyne?1 and ?2 were obtained in n?heptane solution to 1700A. Intensity measurements on ethylene vapor to 1550A enable the contribution of the Rydberg bands to be separated from that of the continuum. The f?values in ethylene and the octenes are about 0.30 agreeing with Mulliken and Rieke's theoretical prediction within the experimental uncertainty of about 20 percent. The f?values of the octynes are about the same but those of cyclohexene and dihydropyrane are about 0.20.

J. R. Platt; H. B. Klevens; W. C. Price

1949-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Cathodic disbondment resistance with reactive ethylene terpolymer blends and composite coatings  

E-Print Network [OSTI]

ethylene methacrylic acid copolymers. These materials possess the desired toughness, impact resistance and adhesion for external pipeline

Love, Corey T.

2008-01-01T23:59:59.000Z

202

Carbons for lithium ion cells prepared using sepiolite as an inorganic template.  

SciTech Connect (OSTI)

Carbon anodes for Li ion cells have been prepared by the in situ polymerization of olefins such as propylene and ethylene in the channels of sepiolite clay mineral. Upon dissolution of the inorganic framework, a disordered carbon was obtained. The carbon was tested as anode in coin cells, yielding a reversible capacity of 633 mAh/g, 1.70 times higher than the capacity delivered by graphitic carbon, assuming 100% efficiency. The coulombic efficiency was higher than 90%.

Sandi, G.

1998-12-09T23:59:59.000Z

203

Evolution of soot size distribution in premixed ethylene/air and ethylene/benzene/air flames: Experimental and modeling study  

SciTech Connect (OSTI)

The effect of benzene concentration in the initial fuel on the evolution of soot size distribution in ethylene/air and ethylene/benzene/air flat flames was characterized by experimental measurements and model predictions of size and number concentration within the flames. Experimentally, a scanning mobility particle sizer was used to allow spatially resolved and online measurements of particle concentration and sizes in the nanometer-size range. The model couples a detailed kinetic scheme with a discrete-sectional approach to follow the transition from gas-phase to nascent particles and their coagulation to larger soot particles. The evolution of soot size distribution (experimental and modeled) in pure ethylene and ethylene flames doped with benzene showed a typical nucleation-sized (since particles do not actually nucleate in the classical sense particle inception is often used in place of nucleation) mode close to the burner surface, and a bimodal behavior at greater height above burner (HAB). However, major features were distinguished between the data sets. The growth of nucleation and agglomeration-sized particles was faster for ethylene/benzene/air flames, evidenced by the earlier presence of bimodality in these flames. The most significant changes in size distribution were attributed to an increase in benzene concentration in the initial fuel. However, these changes were more evident for high temperature flames. In agreement with the experimental data, the model also predicted the decrease of nucleation-sized particles in the postflame region for ethylene flames doped with benzene. This behavior was associated with the decrease of soot precursors after the main oxidation zone of the flames. (author)

Echavarria, Carlos A.; Sarofim, Adel F.; Lighty, JoAnn S. [Department of Chemical Engineering, University of Utah, Salt Lake City, UT (United States); D'Anna, Andrea [Dipartimento di Ingegneria Chimica, Universita ''Federico II'' di Napoli, Naples (Italy)

2011-01-15T23:59:59.000Z

204

Accepted Manuscript Kinetic Modelling of High Density PolyEthylene Pyrolysis: Part 1. Comparison of  

E-Print Network [OSTI]

Accepted Manuscript Kinetic Modelling of High Density PolyEthylene Pyrolysis: Part 1. Comparison this article as: Gascoin N, Navarro-Rodriguez A, Gillard P, Mangeot A, Kinetic Modelling of High Density PolyEthylene.polymdegradstab.2012.05.008 #12;M ANUSCRIPT ACCEPTED ACCEPTED MANUSCRIPT 1 Kinetic Modelling of High Density PolyEthylene

Paris-Sud XI, Université de

205

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

E-Print Network [OSTI]

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

Goddard III, William A.

206

A Calmodulin Binding Protein from Arabidopsis Is Induced by Ethylene and Contains  

E-Print Network [OSTI]

A Calmodulin Binding Protein from Arabidopsis Is Induced by Ethylene and Contains a DNA- acting with other proteins. To isolate CaM binding proteins involved in ethylene signal transduction, we screened an expression library prepared from ethylene-treated Arabidopsis seedlings with 35 S- labeled Ca

Reddy, A.S.N

207

Response to Xanthomonas campestris pv. vesicatoria in Tomato Involves Regulation of Ethylene Receptor  

E-Print Network [OSTI]

Response to Xanthomonas campestris pv. vesicatoria in Tomato Involves Regulation of Ethylene, Gainesville, Florida 32611­0680 (J.B.J., R.E.S.) Although ethylene regulates a wide range of defense ethylene's role in plant response to virulent and avirulent strains of Xanthomonas campestris pv

Klee, Harry J.

208

Orientation and relaxation of orientation of amorphous poly(ethylene terephthalate)  

E-Print Network [OSTI]

Orientation and relaxation of orientation of amorphous poly(ethylene terephthalate) A. Karim 25 April 2001 Abstract Poly(ethylene terephthalate) (PET) has been uniaxially stretched at different by Elsevier Science Ltd. Keywords: Poly(ethylene terephthalate); Orientation; Relaxation 1. Introduction

Pezolet, Michel

209

Fluid Phase Equilibria 218 (2004) 221228 Phase equilibrium in aqueous two-phase systems containing ethylene  

E-Print Network [OSTI]

ethylene oxide­propylene oxide block copolymers and dextran Eduardo dos Santos Tadaa, Watson Loha,1, Pedro equilibrium of aqueous two-phase systems containing the polysaccharide dextran and ethylene oxide (EO; Data; Dextran; Ethylene oxide­propylene oxide block copolymers; Gibbs energy; Thermodynamic modeling 1

Loh, Watson

210

5750 J. Am. Chem. SOC.1990, 112, 5750-5759 Bond Strengths of Ethylene and Acetylene  

E-Print Network [OSTI]

5750 J. Am. Chem. SOC.1990, 112, 5750-5759 Bond Strengths of Ethylene and Acetylene Kent M. Ervin-phase proton transfer kinetics were employed to determine the CH bond dissociationenergiesof acetylene,ethylene-H) = 81.0f 3.5 kcal mol-'. The strengths of each of the other CH and CC bonds in acetylene and ethylene

Ellison, Barney

211

Controlled roughening of poly(ethylene terephthalate) by photoablation : study of wetting and contact angle hysteresis  

E-Print Network [OSTI]

1065 Controlled roughening of poly(ethylene terephthalate) by photoablation : study of wetting of crystalline poly(ethylene terephthalate) films is readily roughened by ablative photodecomposition obtained poly(ethylene terephthalate) films. It is also shown that the three phases contact line of a liquid

Paris-Sud XI, Université de

212

Novel Routes to Ethylene Glycol Synthesis via Acid-Catalyzed Carbonylation of Formaldehyde and Dimethoxymethane  

E-Print Network [OSTI]

1994) L1. [9] J.M. Berty, Ethylene Oxide Synthesis, in: B.L.3 OH O CH 3 OH O OH Mono-Ethylene Glycol (MEG) O O O MethylSynthesis of Precursors to Ethylene Glycol from Formaldehyde

Celik, Fuat Emin

2010-01-01T23:59:59.000Z

213

Diagnostics and analyses of decay process in laser produced tetrakis,,dimethyl-amino...ethylene plasma  

E-Print Network [OSTI]

Diagnostics and analyses of decay process in laser produced tetrakis,,dimethyl-amino...ethylene dimethyl-amino ethylene TMAE . The plasma is characterized as high electron density (1013 ­1012 cm 3 organic gas, tetrakis dimethyl-amino ethylene, which can be single-photon ionized by a 193 nm laser, so

Scharer, John E.

214

Conformation of Poly(ethylene oxide)-Hydroxybenzene Molecular Complexes Studied by Solid-State NMR  

E-Print Network [OSTI]

Conformation of Poly(ethylene oxide)-Hydroxybenzene Molecular Complexes Studied by Solid-State NMR February 16, 2000 ABSTRACT: The conformation of poly(ethylene oxide), PEO, in molecular complexes. Introduction Poly(ethylene oxide), PEO, is a relatively nonpolar polymer but contains ether oxygens

Hong, Mei

215

Ethylene Modulates the Role of NONEXPRESSOR OF PATHOGENESIS-RELATED GENES1 in Cross Talk  

E-Print Network [OSTI]

Ethylene Modulates the Role of NONEXPRESSOR OF PATHOGENESIS-RELATED GENES1 in Cross Talk between (SA), jasmonic acid (JA), and ethylene (ET) play crucial roles in the signaling network that regulates the attacker (Walters et al., 2007). The phytohormones salicylic acid (SA), jasmonic acid (JA), and ethylene

Spoel, Steven

216

Ethylene Production by Subcellular Particles from Rat Liver, Rat Intestinal Mucosa and Penicillium Digitatum  

Science Journals Connector (OSTI)

... been reported that all fruits, without exception, give off ethylene1. While the production of ethylene by fruits and certain micro-organisms has been the subject of extensive investigation over the ... virtually ignored. Recently, Kakanov2 provided evidence that both normal rats and pig ascarids produce ethylene. Although no attempt was made to remove ...

G. RAM CHANDRA; MARY SPENCER

1963-01-26T23:59:59.000Z

217

Low pressure vinylation of aryl and vinyl halides via HeckMizoroki reactions using ethylene  

E-Print Network [OSTI]

Low pressure vinylation of aryl and vinyl halides via Heck­Mizoroki reactions using ethylene Craig with ethylene under ambient pressure (15­30 psi) to give the corresponding vinylarenes. The reactions work of ethylene) of functionalized vinylarenes and 1,3-di- enes.4 When fully developed, we hope, many

RajanBabu, T. V. "Babu"

218

Cooperative Ethylene and Jasmonic Acid Signaling Regulates Selenite Resistance in Arabidopsis1[W][OA  

E-Print Network [OSTI]

Cooperative Ethylene and Jasmonic Acid Signaling Regulates Selenite Resistance in Arabidopsis1[W-induced increases in mRNA levels of ethylene- or jasmonic acid (JA)-biosynthesis and -inducible genes in Col-0 than in Ws-2. Indeed, Col-0 exhibited higher levels of ethylene and JA. The selenite-sensitive phenotype

219

Regulation of Root Elongation under Phosphorus Stress Involves Changes in Ethylene Responsiveness1  

E-Print Network [OSTI]

Regulation of Root Elongation under Phosphorus Stress Involves Changes in Ethylene Responsiveness1) and deficiency (1 m phosphate), focusing on the role of ethylene. We quantified the spatial profile of relative but not of cortical cells. Inhibiting ethylene production (with aminoethoxyvinyl-glycine) or action (with 1

Baskin, Tobias

220

Abstract. Increased ethylene evolution accompanies seed germination of many species including Pisum  

E-Print Network [OSTI]

Abstract. Increased ethylene evolution accompanies seed germination of many species including Pisum sativum L., but only a little is known about the regulation of the ethylene biosynthetic pathway in dierent seed tissues. Biosynthesis of the direct ethylene precursor 1-aminocyclopropane-1-carboxylic acid

Leubner, Gerhard

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Polyamines and ethylene during in vitro rooting of Prunus avium L.  

E-Print Network [OSTI]

Polyamines and ethylene during in vitro rooting of Prunus avium L. S. Biondi N. Bagni2 1 Azienda- genesis has yet to come. The interaction between ethylene and auxin is a well- known phenomenon. Our primary interest in studying the action of ethylene in adventitious root formation stems from auxin

Paris-Sud XI, Université de

222

Correlation states of ethylene S. J. Desjardins and A. D. O. Bawagana)  

E-Print Network [OSTI]

Correlation states of ethylene S. J. Desjardins and A. D. O. Bawagana) Ottawa-Carleton Chemistry of ethylene have been obtained at several photon energies in the range 30 to 220 eV. Further evidence of 1-13 C-ethylene have also been obtained and have been found to be identical to those of normal

Wang, Yan Alexander

223

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

224

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

225

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

226

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

227

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

228

High ethylene to ethane processes for oxidative coupling  

DOE Patents [OSTI]

Oxidative coupling of lower alkane to higher hydrocarbon is conducted using a catalyst comprising barium and/or strontium component and a metal oxide combustion promoter in the presence of vapor phase halogen component. High ethylene to ethane mole ratios in the product can be obtained over extended operating periods.

Chafin, R.B.; Warren, B.K.

1991-12-17T23:59:59.000Z

229

Ethylene Oxide Gaseous Sterilization: II. Influence of Method of Humidification  

Science Journals Connector (OSTI)

...materials tend to remove water vapor from a gas mixture...that the penetration of water vapor into adsorbent...room atmosphere. The atmospheric relative humidity remained...prior to exposure to water vapor and ethylene oxide. The medium employed for recovery of viable cells after...

Robert R. Ernst; James J. Shull

1962-07-01T23:59:59.000Z

230

High ethylene to ethane processes for oxidative coupling  

DOE Patents [OSTI]

Oxidative coupling of lower alkane to higher hydrocarbon is conducted using catalyst comprising barium and/or strontium component and a metal oxide combustion promoter in the presence of vapor phase halogen component. High ethylene to ethane mole ratios in the product can be obtained over extended operating periods.

Chafin, Richard B. (Hurricane, WV); Warren, Barbara K. (Charleston, WV)

1991-01-01T23:59:59.000Z

231

RTE1, A Novel Regulator of Ethylene Receptor Function  

SciTech Connect (OSTI)

RTE1 is a novel conserved gene found in both plants and animals. The main aims of this project were to: 1) examine Arabidopsis RTE1 function using genetic and cell biological analyses, and 2) determine whether the Arabidopsis RTH gene plays a role similar to that of RTE1 in ethylene signaling.

Caren Chang (PI)

2013-02-05T23:59:59.000Z

232

Carbon nanotubes on a substrate  

DOE Patents [OSTI]

The present invention includes carbon nanotubes whose hollow cores are 100% filled with conductive filler. The carbon nanotubes are in uniform arrays on a conductive substrate and are well-aligned and can be densely packed. The uniformity of the carbon nanotube arrays is indicated by the uniform length and diameter of the carbon nanotubes, both which vary from nanotube to nanotube on a given array by no more than about 5%. The alignment of the carbon nanotubes is indicated by the perpendicular growth of the nanotubes from the substrates which is achieved in part by the simultaneous growth of the conductive filler within the hollow core of the nanotube and the densely packed growth of the nanotubes. The present invention provides a densely packed carbon nanotube growth where each nanotube is in contact with at least one nearest-neighbor nanotube. The substrate is a conductive substrate coated with a growth catalyst, and the conductive filler can be single crystals of carbide formed by a solid state reaction between the substrate material and the growth catalyst. The present invention further provides a method for making the filled carbon nanotubes on the conductive substrates. The method includes the steps of depositing a growth catalyst onto the conductive substrate as a prepared substrate, creating a vacuum within a vessel which contains the prepared substrate, flowing H2/inert (e.g. Ar) gas within the vessel to increase and maintain the pressure within the vessel, increasing the temperature of the prepared substrate, and changing the H2/Ar gas to ethylene gas such that the ethylene gas flows within the vessel. Additionally, varying the density and separation of the catalyst particles on the conductive substrate can be used to control the diameter of the nanotubes.

Gao, Yufei [Kennewick, WA; Liu, Jun [West Richland, WA

2002-03-26T23:59:59.000Z

233

Carbon dioxide-assisted fabrication of highly uniform submicron-sized colloidal carbon spheres via hydrothermal carbonization using soft drink  

SciTech Connect (OSTI)

An eco-friendly and economical method for the formation of uniform-sized carbon spheres by hydrothermal dehydration/condensation of a commercial carbonated beverage at 200 oC is reported. CO2 dissolved in the beverage accelerates the dehydration kinetics of the dissolved sugar molecules leading to production of homogeneous carbon spheres having a diameter less than 850 nm. In the presence of CO2, the rough surface of these carbon spheres likely results from continuous Ostwald ripening of constituent microscopic carbon-containing spheres that are formed by subsequent polymerization of intermediate HMF molecules.

Moon, Gun-Hee; Shin, Yongsoon; Arey, Bruce W.; Wang, Chong M.; Exarhos, Gregory J.; Choi, Wonyong; Liu, Jun

2012-10-01T23:59:59.000Z

234

Grafting Functional Molecules  

Science Journals Connector (OSTI)

Adding via batch processing assigned molecules to sublithographic features. Needless to say, strategy XB_ requires the ability to attach organic moieties to the silicon surface, thus forming a hybrid interface wi...

Dr. Gianfranco Cerofolini

2009-01-01T23:59:59.000Z

235

Single-Molecule Chemistry  

Science Journals Connector (OSTI)

With the currently available optical facilities, it is now possible to observe the dynamic behavior of single biomolecules and to study their kinetics. Within a group of molecules (e.g., in an enzyme), ... static...

2008-01-01T23:59:59.000Z

236

The Central Role of PhEIN2 in Ethylene Responses throughout Plant Development in Petunia1  

E-Print Network [OSTI]

The Central Role of PhEIN2 in Ethylene Responses throughout Plant Development in Petunia1 Kenichi hormone ethylene regulates many aspects of growth and development. Loss-of-function mutations in ETHYLENE INSENSITIVE2 (EIN2) result in ethylene insensitivity in Arabidopsis, indicating an essential role of EIN2

Klee, Harry J.

237

Molecular jet growth of carbon nanotubes and dense vertically aligned nanotube arrays  

DOE Patents [OSTI]

A method of growing a carbon nanotube includes the step of impinging a beam of carbon-containing molecules onto a substrate to grow at least one carbon nanotube on the catalyst surface.

Eres, Gyula (Knoxville, TN) [Knoxville, TN

2010-10-12T23:59:59.000Z

238

CARBON-CARBON COMPOSITE ALLCOMP Carbon-Carbon Composite  

E-Print Network [OSTI]

CARBON-CARBON COMPOSITE ALLCOMP Carbon-Carbon Composite · C-C supplied in two forms · T300: C-C composite containing continuous PAN T300 fibers · SWB: Chopped Fiber Composite containing SWB fibers Crush strength 4340 steel, carbon-carbon composite, and Carbon-Silicon Carbide composite were tested to examine

Rollins, Andrew M.

239

Theory of nuclear-spin conversion in ethylene  

Science Journals Connector (OSTI)

A theoretical analysis of nuclear-spin conversion in ethylene 13CCH4 has been performed. The conversion rate was found to be ?310-4 s-1/Torr, which is in qualitative agreement with the recently obtained experimental value. It was shown that the ortho-para mixing in 13CCH4 is dominated by spin-rotation coupling. Mixing of only two pairs of ortho-para levels was found to contribute significantly to the spin conversion.

P. L. Chapovsky and E. Ilisca

2001-05-16T23:59:59.000Z

240

Ethylene oxidation in a well-stirred reactor  

SciTech Connect (OSTI)

The detailed ethylene oxidation data set of Thornton, obtained for a well-stirred reactor operated fuel-lean at atmospheric pressure and for temperatures of 1003K to 1253K, is used as a basis for the comparison of chemical kinetic mechanisms reported in the literature and for the development of a new ethylene oxidation mechanism. The mechanisms examined are those of Westbrook and Pitz and Dagaut et al. These mechanisms indicated that unusually large rates for the vinyl decomposition reaction are required to obtain agreement with the Thornton data set. A new ethylene oxidation mechanism is developed in order to overcome some of the drawbacks of the previous mechanisms. The new mechanism closely simulates the overall rate of loss of ethylene, and the concentation of CO, CO{sub 2}, H{sub 2}, CH{sub 2}O, C{sub 2}H{sub 2}, CH{sub 3}OH, CH{sub 4}, and C{sub 2}H{sub 6} measured for the stirred reactor. Predictions by this mechanism are dependent on a new high temperature vinyl oxidation route, C{sub 2}H{sub 3} + O{sub 2} = CH{sub 2}CHO + O with a k{sub C2H3+O2=CH2CHO+O}/k{sub C2H3+O2=CH2O+HCO} branching ratio of 1.20 at 1053K to 2.05 at 1253K. The branching ratio values were dependent upon the extent of fall-off for the C{sub 2}H{sub 3} + O{sub 2} = CH{sub 2}O + HCO reaction.

Marinov, N.M. [Lawrence Livermore National Lab., CA (United States); Malte, P.C. [Washington Univ., Seattle, WA (United States). Dept. of Mechanical Engineering

1994-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

FUEL CELLS DIRECT ALCOHOL FUEL CELLS | Direct Ethylene Glycol Fuel Cells  

Science Journals Connector (OSTI)

Direct ethylene glycol fuel cells, in which the oxidation of ethylene glycol and the reduction of oxygen take place at the anode and the cathode, respectively, are promising candidates as electric power sources of portable devices such as the cellular phone and the laptop computer. The advantages of ethylene glycol are high activity, high energy density, low volatility, and high boiling point compared with other organic fuels such as methanol and ethanol. In this article, the construction of direct ethylene glycol fuel cells, the electrooxidation of ethylene glycol in acid and alkaline solutions, cathode catalysts, and operating conditions such as temperature, pH of the electrolytes, and the concentration of ethylene glycol are described.

Z. Ogumi; K. Miyazaki

2009-01-01T23:59:59.000Z

242

Molecules, ices and astronomy  

Science Journals Connector (OSTI)

......research-article Features Molecules, ices and astronomy David A Williams, Wendy A Brown, Stephen...brown@ucl.ac.uk Dept of Physics and Astronomy, University College London, Gower Street...of Chemistry, UCL Dept of Physics and Astronomy, UCL Over the past 40 years, about......

D A Williams; W A Brown; S D Price; J M C Rawlings; S Viti

2007-02-01T23:59:59.000Z

243

Surface induced disorder of nematic MBBA near silica with grafted poly(ethylene oxide)  

E-Print Network [OSTI]

909 Surface induced disorder of nematic MBBA near silica with grafted poly(ethylene oxide) H. Ben greffés, du polyoxyde d'ethylene 2000, a été étudié à l'aide des techniques suivantes : la résonance para with grafted polymers poly(ethylene oxide) 2000, has been investigated by the electron paramagnetic resonance

Paris-Sud XI, Université de

244

Observing single molecule chemical reactions on metal nanoparticles.  

SciTech Connect (OSTI)

We report the study of the photodecomposition of single Rhodamine 6G (R6G) dye molecules adsorbed on silver nanoparticles. The nanoparticles were immobilized and spatially isolated on polylysine-derivatized glass coverslips, and confocal laser microspectroscopy was used to obtain surface-enhanced Raman scattering (SERS) spectra from individual R6G molecules. The photodecomposition of these molecules was observed with 150-ms temporal resolution. The photoproduct was identified as graphitic carbon based on the appearance of broad SERS vibrational bands at 1592 cm{sup -1} and 1340 cm{sup -1} observed in both bulk and averaged single-molecule photoproduct spectra. In contrast, when observed at the single-molecule level, the photoproduct yielded sharp SERS spectra. The inhomogeneous broadening of the bulk SERS spectra is due to a variety of photoproducts in different surface orientations and is a characteristic of ensemble-averaged measurements of disordered systems. These single-molecule studies indicate a photodecomposition pathway by which the R6G molecule desorbs from the metal surface, an excited-state photoreaction occurs, and the R6G photoproduct(s) readsorbs to the surface. A SERS spectrum is obtained when either the intact R6G or the R6G photoproduct(s) are adsorbed on a SERS-active site. This work further illustrates the power of single-molecule spectroscopy (SMS) to reveal unique behaviors of single molecules that are not discernable with bulk measurements.

Emory, S. R. (Steven R.); Ambrose, W. Patrick; Goodwin, P. M. (Peter M); Keller, Richard A.

2001-01-01T23:59:59.000Z

245

Regulating the ethylene response of a plant by modulation of F-box proteins  

SciTech Connect (OSTI)

The invention relates to transgenic plants having reduced sensitivity to ethylene as a result of having a recombinant nucleic acid encoding an F-box protein that interacts with a EIN3 involved in an ethylene response of plants, and a method of producing a transgenic plant with reduced ethylene sensitivity by transforming the plant with a nucleic acid sequence encoding an F-box protein. The inventions also relates to methods of altering the ethylene response in a plant by modulating the activity or expression of an F-box protein.

Guo, Hongwei (Beijing, CN); Ecker, Joseph R. (Carlsbad, CA)

2011-03-08T23:59:59.000Z

246

IGNITION TRANSIENT IN AN ETHYLENE FUELED SCRAMJET ENGINE WITH AIR THROTTLING.  

E-Print Network [OSTI]

??This research focuses on the modeling and simulation of ignition transient and subsequent combustion dynamics in an ethylene fueled supersonic combustion ramjet (scramjet) engine. The (more)

Li, Jian

2009-01-01T23:59:59.000Z

247

The Role of Aluminate in the Activation of Catalytic Systems for Ethylene Oligomerization .  

E-Print Network [OSTI]

??The reaction mechanisms followed by ethylene polymerization and selective oligomerization (tri- and tetramerization) are conceptually very different, being a non-redox chain growth and a redox (more)

Alzamly, Ahmed

2014-01-01T23:59:59.000Z

248

Study of the Factors Affecting the Selectivity of Catalytic Ethylene Oligomerization .  

E-Print Network [OSTI]

??Over the past decade, advances in ethylene oligomerization have witnessed explosive growth of interest from both commercial and academic standpoint, with chromium metal invariably being (more)

Albahily, Khalid

2011-01-01T23:59:59.000Z

249

E-Print Network 3.0 - auxin-induced ethylene triggers Sample...  

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

Molecular Biology 53: 117131, 2003. 2003 Kluwer Academic Publishers. Printed in the Netherlands. Summary: that IAA levels are increased by exogenous ethylene treatment. The ex-...

250

THE FAR-INFRARED ROTATIONAL SPECTRUM OF ETHYLENE OXIDE  

SciTech Connect (OSTI)

High-resolution FTIR spectra of ethylene oxide have been measured in the far-infrared region using synchrotron radiation. A total of 1182 lines between 15 and 73 cm{sup -1} were assigned, with J{sub max} = 64, expanding upon previous studies that had recorded spectra up to 12 cm{sup -1}, J{sub max} = 49. All available data were co-fitted to provide greatly imp- roved rotational constants for the ground vibrational state that are capable of predicting transitions up to 73 cm{sup -1}.

Medcraft, Chris; Thompson, Christopher D.; McNaughton, Don [School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800 (Australia); Robertson, Evan G. [Department of Chemistry, La Trobe Institute of Molecular Sciences, La Trobe University, Bundoora, Victoria 3086 (Australia); Appadoo, Dominique R. T., E-mail: donald.mcnaughton@monash.edu [Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168 (Australia)

2012-07-01T23:59:59.000Z

251

Ethylene from NGL feedstocks. Part 1-Trends favoring NGL feedstocks  

SciTech Connect (OSTI)

This paper addresses current trends that are making natural gas liquids (NGL) more attractive feedstocks for olefin plants than mid-distillates and heavier oils. Two of the trends examined involve motor gasoline production: that the volume consumed is decreasing and the percent of unleaded gasoline is increasing. This means that it will be difficult to blend light straight-run gasoline, natural gasoline and aromatics plant raffinate into the gasoline pool, due to the very low octane of each material. It is indicated, however, that they will make excellent feedstocks for ethylene plants.

Zack, R.S.; Skamser, R.O.

1983-10-01T23:59:59.000Z

252

Carbon Adsorbents with Molecular Sieve Properties  

Science Journals Connector (OSTI)

... for cyclohexane molecules1. It can therefore be concluded that the molecular sieve properties of carbon adsorbents on the basis of 'Saran' charcoal are caused by narrowing of the openings of ...

M. M. DUBININ; O. KADLEC; A. ZUKAL

1965-07-03T23:59:59.000Z

253

Ultra-cold molecule production.  

SciTech Connect (OSTI)

The production of Ultra-cold molecules is a goal of many laboratories through out the world. Here we are pursuing a unique technique that utilizes the kinematics of atomic and molecular collisions to achieve the goal of producing substantial numbers of sub Kelvin molecules confined in a trap. Here a trap is defined as an apparatus that spatially localizes, in a known location in the laboratory, a sample of molecules whose temperature is below one degree absolute Kelvin. Further, the storage time for the molecules must be sufficient to measure and possibly further cool the molecules. We utilize a technique unique to Sandia to form cold molecules from near mass degenerate collisions between atoms and molecules. This report describes the progress we have made using this novel technique and the further progress towards trapping molecules we have cooled.

Ramirez-Serrano, Jamie; Chandler, David W.; Strecker, Kevin; Rahn, Larry A.

2005-12-01T23:59:59.000Z

254

E-Print Network 3.0 - alkanedithiol single-molecule junctions...  

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

electrodes to form a metal-molecule- metal junction. Alkanedithiols with 5, 6, 8 and 9 carbon atoms were... mode). As there are no clear multiples of the GA and GB, GC seems to...

255

Vibration Spectra of Hydrocarbon Molecules. II. Skeletal Frequencies in Certain Branched Paraffins  

Science Journals Connector (OSTI)

25 October 1949 research-article Vibration Spectra of Hydrocarbon Molecules. II...characteristic frequencies should be assigned as vibrations of the carbon skeleton of these structural...problem of the interpretation of the vibration spectra of hydrocarbons is considered...

1949-01-01T23:59:59.000Z

256

Ethylene Glycol produced by Ethylene Oxide Sterilization and its Effect on Blood-clotting Factors in an Inbred Strain of Mice  

Science Journals Connector (OSTI)

... (0-25 mgm. and 2-5 mgm. per day for four weeks) of ethylene oxide diluted in cold olive oil or intravenous administration (25 (Jigm. and 2- ... at each dosage-level.

ROBERT C. ALLEN; HANS MEIER; WARREN G. HOAG

1962-01-27T23:59:59.000Z

257

Instability of dilute poly(ethylene-oxide) solutions Y. Layec and M.-N. Layec-Raphalen  

E-Print Network [OSTI]

L-121 Instability of dilute poly(ethylene-oxide) solutions Y. Layec and M.-N. Layec property. Poly- (ethylene-oxide) (PEO) is one such water-soluble polymer largely used in turbulent flows [1

Boyer, Edmond

258

Physical Adsorption of Ethylene on MgO(100): Effects of Substrate Ionicity and Symmetry on Wetting.  

E-Print Network [OSTI]

??The wetting behavior of ethylene adsorbed on MgO(100) was investigated from 83{ 135 K using high resolution volumetric adsorption isotherms. Layering transitions for ethylene on (more)

Barbour, Andi

2009-01-01T23:59:59.000Z

259

The Irreversible Formation of Methane in the System Ethane-Ethylene-Hydrogen  

Science Journals Connector (OSTI)

...System Ethane-Ethylene-Hydrogen C. J. Danby B. C. Spall...mass-spectrometric analysis and by kinetic methods. The methane is formed directly...concluded that the major mode of production of methane from ethane is...circumstances. From the ethylene-hydrogen side the methane arises by...

1953-01-01T23:59:59.000Z

260

Ethylene receptor degradation controls the timing of ripening in tomato fruit  

E-Print Network [OSTI]

Ethylene receptor degradation controls the timing of ripening in tomato fruit Brian M. Kevany-mail hjklee@ifas.ufl.edu). Summary Fruit ripening in tomato requires the coordination of both developmental occurs through the 26S proteasome-dependent pathway. Ethylene exposure of immature fruits causes

Klee, Harry J.

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Phase Structure and Properties of Poly(ethylene terephthalate)/High-Density Polyethylene Based on  

E-Print Network [OSTI]

Phase Structure and Properties of Poly(ethylene terephthalate)/High-Density Polyethylene Based.interscience.wiley.com). ABSTRACT: Blends based on recycled high density polyethylene (R-HDPE) and recycled poly(ethylene tereph- thalate) (R-PET) were made through reactive extrusion. The effects of maleated polyethylene (PE

262

Simulation of the effects of chain architecture on the sorption of ethylene in polyethylene  

E-Print Network [OSTI]

Simulation of the effects of chain architecture on the sorption of ethylene in polyethylene Brian J in amorphous linear low-density polyethylene of different chain architectures. The NERD united-atom force field investigated the effect of polyethylene chain length and branching on ethylene solubility. In this study, we

Faller, Roland

263

Regulating the ethylene response of a plant by modulation of F-box proteins  

SciTech Connect (OSTI)

The invention relates to transgenic plants having reduced sensitivity to ethylene as a result of having a recombinant nucleic acid encoding a F-box protein, and a method of producing a transgenic plant with reduced ethylene sensitivity by transforming the plant with a nucleic acid sequence encoding a F-box protein.

Guo, Hongwei (La Jolla, CA); Ecker, Joseph R. (Carlsbad, CA)

2010-02-02T23:59:59.000Z

264

Regulating the ethylene response of a plant by modulation of F-box proteins  

SciTech Connect (OSTI)

The relationship between F-box proteins and proteins invovled in the ethylene response in plants is described. In particular, F-box proteins may bind to proteins involved in the ethylene response and target them for degradation by the ubiquitin/proteasome pathway. The transcription factor EIN3 is a key transcription factor mediating ethylne-regulated gene expression and morphological responses. EIN3 is degraded through a ubiquitin/proteasome pathway mediated by F-box proteins EBF1 and EBF2. The link between F-box proteins and the ethylene response is a key step in modulating or regulating the response of a plant to ethylene. Described herein are transgenic plants having an altered sensitivity to ethylene, and methods for making transgenic plant haing an althered sensitivity to ethylene by modulating the level of activity of F-box proteins. Methods of altering the ethylene response in a plant by modulating the activity or expression of an F-box protein are described. Also described are methods of identifying compounds that modulate the ethylene response in plants by modulating the level of F-box protein expression or activity.

Guo, Hongwei [Beijing, CN; Ecker, Joseph R [Carlsbad, CA

2014-01-07T23:59:59.000Z

265

Absorption Equilibrium and Kinetics for Ethylene-Ethane Separation with a Novel Solvent  

E-Print Network [OSTI]

mixture of ethylene/ethane, distillation towers with an enormous number of trays are operated at high loops are often used with ethylene or propylene as the working fluid. Even with the high level of heat.2% of the total yearly energy requirement of all distillation processes.2 Despite the high capital and energy

Eldridge, R. Bruce

266

ELUSIVE ETHYLENE DETECTED IN SATURN'S NORTHERN STORM REGION  

SciTech Connect (OSTI)

The massive eruption at 40 Degree-Sign N (planetographic latitude) on Saturn in 2010 December has produced significant and lasting effects in the northern hemisphere on temperature and species abundances. The northern storm region was observed on many occasions in 2011 by Cassini's Composite Infrared Spectrometer (CIRS). In 2011 May, temperatures in the stratosphere greater than 200 K were derived from CIRS spectra in the regions referred to as 'beacons' (warm regions in the stratosphere). Ethylene has been detected in the beacon region in Saturn's northern storm region using CIRS. Ground-based observations using the high-resolution spectrometer Celeste on the McMath-Pierce Telescope on 2011 May 15 were used to confirm the detection and improve the altitude resolution in the retrieved profile. The derived ethylene profile from the CIRS data gives a C{sub 2}H{sub 4} mole fraction of 5.9 {+-} 4.5 Multiplication-Sign 10{sup -7} at 0.5 mbar, and from Celeste data it gives 2.7 {+-} 0.45 Multiplication-Sign 10{sup -6} at 0.1 mbar. This is two orders of magnitude higher than the amount measured in the ultraviolet at other latitudes prior to the storm. It is also much higher than predicted by photochemical models, indicating that perhaps another production mechanism is required or a loss mechanism is being inhibited.

Hesman, B. E.; Achterberg, R. K.; Nixon, C. A. [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States); Bjoraker, G. L.; Romani, P. N. [NASA/GSFC Code 693, Greenbelt, MD 20771 (United States); Sada, P. V. [Departamento de Fisica y Matematicas, Universidad de Monterrey, Garza Garcia, NL 66238 (Mexico); Jennings, D. E. [NASA/GSFC Code 693 and Code 500, Greenbelt, MD 20771 (United States); Lunsford, A. W. [Department of Physics, Catholic University of America, Washington, DC 20064 (United States); Fletcher, L. N.; Irwin, P. G. J. [Atmospheric, Oceanic and Planetary Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom); Boyle, R. J. [Department of Physics and Astronomy, Dickinson College, Carlisle, PA 17013 (United States); Simon-Miller, A. A., E-mail: brigette.e.hesman@nasa.gov [NASA/GSFC Code 690, Greenbelt, MD 20771 (United States)

2012-11-20T23:59:59.000Z

267

Single molecule fluorescence (the basics)  

E-Print Network [OSTI]

Single molecule fluorescence (the basics) #12;light time light time No averaging, no need;knrkr S0 S1 Iph . . Iexc #12;Single molecule emitters #12;K. Brejc et.al., PNAS 94 (1997) 2306 1 nm glass, notch holographic, multidielectric,... #12;Optical schemes to detect single molecules Excitation

Ritort, Felix

268

Study of the methanol conversion to ethylene and propylene using small pore size zeolites  

SciTech Connect (OSTI)

This project consisted of the study of the kinetics of the reaction of methanol to olefins. A combined selectivity to ethylene and propylene of 90% is readily achieved by selecting a proper set of operating conditions. The investigation encompassed the study of external and internal diffusion, adsorption and reaction. Instantaneous and overall material balances were developed, and a minimization technique was used to calculate the rate of formation of coke, the amount of coke deposition on the catalyst, and the hydrogen to carbon ratio. This procedure allowed the adjustment of several parameters in order to satisfy the material balances. The results were used to calculate the rate constants of the proposed model. The results indicated that the dehydration of methanol was inhibited by the adsorption of methanol. In general low methanol partial pressures, achieved by decreasing the total pressure in the case of pure methanol feeds, or by diluting methanol with water or nitrogen, increased the selectivity toward olefins. All the catalysts studied showed deactivation due to the accumulation of aromatic compounds (coke), which had a hydrogen to carbon ration close to 1.1. The maximum amount of coke that can be deposited on the catalyst was about 0.16 grams coke/gram catalyst. The catalyst was regenerated by burning the coke with air. Residence time distribution experiments using a step input change showed that perfect mixing could be obtained with 200 grams of powder catalyst of 30-100 microns particle size by using flow rates smaller than 5 cc/sec measured at reactor conditions, and impeller speeds higher than 12 rev/sec.

Vera-Castaneda, E.

1985-01-01T23:59:59.000Z

269

Interactions of Oxygen and Ethylene with Submonolayer Ag Films Supported on Ni(111)  

SciTech Connect (OSTI)

We investigate the oxidation of, and the reaction of ethylene with, Ni(111) with and without sub-monolayer Ag adlayers as a function of temperature. The addition of Ag to Ni(111) is shown to enhance the activity towards the ethylene epoxidation reaction, and increase the temperature at which ethylene oxide is stable on the surface. We present a systematic study of the formation of chemisorbed oxygen on the Ag-Ni(111) surfaces and correlate the presence and absence of O{sup 1-} and O{sup 2-} surface species with the reactivity towards ethylene. By characterizing the samples with low-energy electron microscopy (LEEM) in combination with X-ray photoelectron spectroscopy (XPS), we have identified specific growth of silver on step-edge sites and successfully increased the temperature at which the produced ethylene oxide remains stable, a trait which is desirable for catalysis.

Alamgir, F.M.; Senanayake, S.; Rettew, R.E.; Meyer, A.; Chen, T.-L.; Petersburg, C.; Flege, J.I.; Falta, J.

2011-06-01T23:59:59.000Z

270

Interactions of Oxygen and Ethylene with Submonolayer Ag Films Supported on Ni(111)  

SciTech Connect (OSTI)

We investigate the oxidation of, and the reaction of ethylene with, Ni(111) with and without sub-monolayer Ag adlayers as a function of temperature. The addition of Ag to Ni(111) is shown to enhance the activity towards the ethylene epoxidation reaction, and increase the temperature at which ethylene oxide is stable on the surface. We present a systematic study of the formation of chemisorbed oxygen on the Ag-Ni(111) surfaces and correlate the presence and absence of O{sup 1-} and O{sup 2-} surface species with the reactivity towards ethylene. By characterizing the samples with low-energy electron microscopy (LEEM) in combination with X-ray photoelectron spectroscopy (XPS), we have identified specific growth of silver on step-edge sites and successfully increased the temperature at which the produced ethylene oxide remains stable, a trait which is desirable for catalysis.

R Rettew; A Meyer; S Senanayake; T Chen; C Petersburg; J Flege; J Falta; F Alamgir

2011-12-31T23:59:59.000Z

271

Members of the tomato LeEIL (EIN3-like) gene family are functionally redundant and regulate ethylene responses  

E-Print Network [OSTI]

ethylene responses throughout plant development Denise M. Tieman, Joseph A. Ciardi, Mark G. Taylor. * For correspondence (fax +1 352 846 2063; e-mail hjklee@mail.ifas.u¯.edu). Summary The plant hormone ethylene regulates many aspects of growth, development and responses to the environment. The Arabidopsis ETHYLENE

Klee, Harry J.

272

In situ kinetics study of the accelerated ageing of poly(ethylene oxide) by photoDSC  

E-Print Network [OSTI]

1 In situ kinetics study of the accelerated ageing of poly(ethylene oxide) by photoDSC F. Fraisse1 photo and thermo degradation. This paper presents a kinetic study of thermo and photoageing of poly(ethylene such as PEO. Experimental Several samples of poly(ethylene oxide) were used. The samples with a molecular

Paris-Sud XI, Université de

273

High-Shear-Rate Behavior of Radial Hydrogenated Styrene-Isoprene and Block Ethylene-Propylene Copolymer  

E-Print Network [OSTI]

High-Shear-Rate Behavior of Radial Hydrogenated Styrene-Isoprene and Block Ethylene additives (an ethylene-propylene block copolymer and a radial hydrogenated styrene-isoprene copolymer-isoprene copolymer and 1.5% for the ethylene-propylene additive, the viscosity was measured over a range of shear

Erickson, David

274

2,6-Dibenzhydryl-N-(2-phenyliminoacenaphthylenylidene)-4-chloro-aniline nickel dihalides: Synthesis, characterization and ethylene  

E-Print Network [OSTI]

: Synthesis, characterization and ethylene polymerization for polyethylenes with high molecular weights ) for ethylene polymerization. The resulting polyethylenes possess high molecular weights (Mw up to 106 g mol?1, it was discovered that a-diimino metal halides of Ni(II) and Pd(II) are highly active pre-catalysts for ethylene

Glaser, Rainer

275

Class I Chitinase and -1,3-Glucanase Are Differentially Regulated by Wounding, Methyl Jasmonate, Ethylene, and  

E-Print Network [OSTI]

, Ethylene, and Gibberellin in Tomato Seeds and Leaves1 Chun-Ta Wu2 and Kent J. Bradford* Department. Wounding and methyl jasmonate (MeJA) induced Chi9 expression, whereas ethylene, abscisic acid, sodium. However, MeJA, wounding, and particularly ethylene induced both genes in leaves, whereas GA induced only

Bradford, Kent

276

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

E-Print Network [OSTI]

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

Paris-Sud XI, Université de

277

Journal of Molecular Catalysis A: Chemical 207 (2004) 137146 Density functional theory study of the ethylene epoxidation over  

E-Print Network [OSTI]

of the ethylene epoxidation over Ti-substituted silicalite (TS-1) Jumras Limtrakula,1, Chan Inntama, Thanh N in revised form 10 June 2003; accepted 10 June 2003 Abstract The mechanism of ethylene epoxidation was determined. The epoxidation of ethylene consists of three steps. First, the chemisorption of H2O2 at the Ti

Truong, Thanh N.

278

Plant Physiol. (1995) 107: 1343-1 353 The Tomato Never-ri'e Locus Regulates Ethylene-lnducible  

E-Print Network [OSTI]

Plant Physiol. (1995) 107: 1343-1 353 The Tomato Never-ri'e Locus Regulates Ethylene-lnducible Gene regulator ethylene (M.B. Lanahan, H.-C. Yen, J.J. Ciovannoni, H.J. Klee I19941 Plant Cell 6: 521-530). We report here ethylene sensi- tivity over a range of concentrations in normal and Nr tomato seedlingsand

Klee, Harry J.

279

Arabidopsis EIN3-binding F-box 1 and 2 form ubiquitin-protein ligases that repress ethylene action  

E-Print Network [OSTI]

Arabidopsis EIN3-binding F-box 1 and 2 form ubiquitin-protein ligases that repress ethylene action-box proteins, EBF1 and -2, that work coordinately in SCF complexes to repress ethylene action. Mutations in either gene cause hypersensitivity to exogenous ethylene and its precursor 1-aminocyclopropane-1

Sheen, Jen

280

A Point Mutation in the Ethylene-Inducing Xylanase Elicitor Inhibits the -1-4-Endoxylanase Activity But Not the  

E-Print Network [OSTI]

A Point Mutation in the Ethylene-Inducing Xylanase Elicitor Inhibits the -1-4-Endoxylanase Activity.C.) Ethylene-inducing xylanase (EIX) elicits plant defense responses in certain tobacco (Nicotiana tabacum also lost the ability to induce the hypersensitive response and ethylene biosynthesis. However, mutants

Avni, Adi

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Carbon sequestration  

Science Journals Connector (OSTI)

...Leaver and Howard Dalton Carbon sequestration Rattan Lal * * ( lal.1...and biotic technologies. Carbon sequestration implies transfer of atmospheric...and biomass burning. 3. Carbon sequestration Emission rates from fossil...

2008-01-01T23:59:59.000Z

282

Carbon Sequestration  

Science Journals Connector (OSTI)

Carbon sequestration refers to a portfolio of activities for ... capture, separation and storage or reuse of carbon or CO2. Carbon sequestration technologies encompass both the prevention of CO2 emissions into ...

Robert L. Kane MS; Daniel E. Klein MBA

2005-01-01T23:59:59.000Z

283

Evidence of natural isotopic distribution from single-molecule SERS  

E-Print Network [OSTI]

We report on the observation of the natural isotopic spread of carbon from single-molecule Surface Enhanced Raman Spectroscopy (SM-SERS). By choosing a dye molecule with a very localized Raman active vibration in a cyano bond (C$\\equiv$N triple bond), we observe (in a SERS colloidal liquid) a small fraction of SM-SERS events where the frequency of the cyano mode is softened and in agreement with the effect of substituting $^{12}$C by the next most abundant $^{13}$C isotope. This example adds another demonstration of single molecule sensitivity in SERS through isotopic editing which is done, in this case, not by artificial isotopic editing but rather by nature itself. It also highlights SERS as a unique spectroscopic tool, capable of detecting an isotopic change in one atom of a single molecule.

P. G. Etchegoin; E. C. Le Ru; M. Meyer

2008-11-03T23:59:59.000Z

284

Single-Molecule Studies of Gene Expression  

E-Print Network [OSTI]

material for the single-molecule transcription experimentsGeometry for the single-molecule assay of bare DNAgeometry for the single-molecule translation assay .

Hodges, Hamilton Courtney

2009-01-01T23:59:59.000Z

285

Fluorescence, Single-Molecule Microscope | EMSL  

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

Single-Molecule Microscope Fluorescence, Single-Molecule Microscope The single-molecule optical microscope is designed to study complex reaction dynamics such as enzymatic...

286

Nanometer Resolution Imaging by SIngle Molecule Switching. |...  

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

Nanometer Resolution Imaging by SIngle Molecule Switching. Nanometer Resolution Imaging by SIngle Molecule Switching. Abstract: The fluorescence intensity of single molecules can...

287

High Throughput Single Molecule Investigation of Transcription  

E-Print Network [OSTI]

genomic DNA based on single-molecule detection. Analyticalmapping: a novel, single- molecule approach to genomic2011). High-throughput single-molecule optofluidic analysis.

Kim, Soohong

2012-01-01T23:59:59.000Z

288

Effect of the preparation conditions of carbon-supported Pt catalyst on PEMFC performance  

Science Journals Connector (OSTI)

Carbon-supported Pt catalysts were prepared using NaBH4 as a reducing agent in either ethylene glycol or water for use as a cathode catalyst in PEMFCs (polymer electrolyte membrane fuel cells). Aqueous NaBH4 solu...

Ji Bong Joo; Pil Kim; Wooyoung Kim; Younghun Kim

2009-01-01T23:59:59.000Z

289

Single molecule laser spectroscopy  

Science Journals Connector (OSTI)

Abstract In this article, we discussed some single molecule spectroscopy techniques and methods. We have chosen the simplicity in this survey based on our laboratory experience in this field. We concentrated on the imaging by both techniques the wide field and the scanning microscopes. Other imaging enhancements on the technique like extended resolution wide field, the total internal reflection imaging, and its derivatives are also reviewed. In addition to the imaging techniques, some diffusion techniques also are discussed like fluorescence correlation spectroscopy. The related methods like Forester resonance transfer, photo-induced electron transfer and anisotropy (steady state and time decay) are also discussed. In addition, we elucidated some simple details about the theory behind the FCS and its resulting curve fitting. This review is preceded by general introduction and ended with the conclusion.

Diaa Atta; Ali Okasha

2015-01-01T23:59:59.000Z

290

Modeling the oxyethylation of primary aliphatic alcohols by ethylene oxide  

SciTech Connect (OSTI)

From the point of view of safety and the production of the narrowest distribution of oxyethyl groups it is advantageous to use an idealdisplacement tube reactor for continuous oxyethylation under pressure. For the process under consideration here, a high-capacity, ideal-displacement reactor has the difficulty of removing the reaction heat, so that a precise choice of tube diameter is required. Based on kinetic data obtained at the D.I. Mendeleev Moscow Chemical Technology Institute for the oxyethylation of PAA by ethylene oxide, a mathematical model has been developed and is presented here of an ideal-displacement ethoxylation reactor, the suitability of which has been tested on an oxyethylation pilot plant.

Panaev, Y.D.; Latyshev, I.E.; Ternovskii, S.A.

1985-02-01T23:59:59.000Z

291

Molybdenum/alkali metal/ethylene glycol complexes useful as epoxidation catalysts  

SciTech Connect (OSTI)

This patent describes a clear, storage stable solution of a molybdenum/alkali metal/ethylene glycol complex in ethylene glycol made by the process comprising: reacting at an elevated temperature between about 25/sup 0/ and 150/sup 0/C a solid ammonium molybdate or a hydrate thereof and a solid alkali metal molybdate or a hydrate thereof with ethylene glycol, such that the ratio of moles of ethylene glycol to total gram atoms of molybdenum in the molybdates ranges from about 7:10 to 10:1, and the ratio of gram atoms of molybdenum in the ammonium molybdate or hydrate thereof to gram atoms of molybdenum in the alkali metal molybdate is from about 1:1 to about 20:1 to thereby provide a reaction product composed of a solution of an alkali metal-containing complex of molybdenum, alkali metal and ethylene glycol and by-products, including water, in the ethylene glycol and subsequently stripping the solution at a reduced pressure to remove from about 5 to about 25% of the reaction product, as distillate, to thereby provide a storage stable solution of the complex in the ethylene glycol having a molybdenum content of about 6 wt. % to about 20 wt. %, a water concentration of about 0.1 wt. % to about 6 wt. % and an acid number of more than about 60.

Marquis, E.T.; Sanderson, J.R.; Keating, K.P.

1987-10-27T23:59:59.000Z

292

Mechanism of the oxidation of ethylene by palladium(II)  

Science Journals Connector (OSTI)

... C2v molecular symmetry. The out-of-plane YMZ bending vibration of a MX2YZ molecule of C2u symmetry with the coordinate axes as shown in Fig. 1 has b2 symmetry. If ...

ADRIAN W. PARKINS; ROGER C. SLADE

1975-08-21T23:59:59.000Z

293

Modification of model ethylenebutene copolymers using an organic peroxide  

Science Journals Connector (OSTI)

Well-characterized linear ethylenebutene-1 copolymers with polydispersities lower than 1.1 were modified using an organic peroxide with the purpose of assessing the relative importance of chain-linking processes. The copolymers used in this work were obtained by hydrogenation of polybutadienes, which were synthesized by anionic polymerization of butadiene. All the copolymers were modified in the molten state using 2,5-dimethyl-2,5 di(terbutyl peroxy)-hexane with concentrations varying on a ample range. The changes in the molecular structure of the polymers due to the chemical attack of the peroxide were evaluated combining selective solvent extraction and GPC-MALLS techniques. As expected, the critical concentration required for the onset of gelation, Cc, decreases with average molecular mass of the original copolymer. When concentrations of peroxide below Cc are employed, the weight-average molecular mass of the modified copolymers augments and the molecular mass distribution gets wider as the concentration of peroxide added to the copolymer increases. Although, the chain-linking reactions govern the modification process, there is a fraction of molecular chains that suffers scission. The measurable fraction of molecules having molecular mass lower than the original quasi-monodisperse copolymers ranges between 15% and 24% of the total mass when the copolymers were modified with concentrations of peroxide below Cc. Beyond the onset of gelation, the gel amount increases continuously with the peroxide concentration added to the copolymers. At a given peroxide concentration, the amount of gel produced for a given polymer is higher the greater is the initial molecular mass of the modified polymer. The limiting amount of gel was between 90% and 98% of the total mass, which was reached using concentrations 20 times larger than the critical one. The efficiency of the peroxide as cross-linking agent seems to be dependent on the concentration of peroxide.

Claudio J. Prez; Enrique M. Valls; Marcelo D. Failla

2005-01-01T23:59:59.000Z

294

Oxidation of hydrocarbon in a carbon nanotube supported corona discharge in micoreactor : oxidation of ethylene.  

E-Print Network [OSTI]

??Population growth driven sustainability issues, including the food resource issue, are pressing problems in need of attention. The goal of the present thesis is to (more)

Alanazi, Yousef M.

2014-01-01T23:59:59.000Z

295

Mechanism of the telomerization of ethylene by carbon tetrachloride and chloroform  

Science Journals Connector (OSTI)

1. The scheme of Alfrey and Price was used to evaluate the inductive influence of the trichloromethyl group. The...

B. A. nglin; R. Kh. Freidlina

1966-12-01T23:59:59.000Z

296

Root Formation in Ethylene-Insensitive Plants1 David G. Clark*, Erika K. Gubrium, James E. Barrett, Terril A. Nell, and Harry J. Klee  

E-Print Network [OSTI]

Root Formation in Ethylene-Insensitive Plants1 David G. Clark*, Erika K. Gubrium, James E. Barrett of Florida, Gainesville, Florida 32611­0670 Experiments with ethylene-insensitive tomato (Lycopersicon es formation is affected by ethylene insensitivity. Ethylene-insensitive Never ripe (NR) tomato plants produced

Klee, Harry J.

297

Carbon Smackdown: Carbon Capture  

SciTech Connect (OSTI)

In this July 9, 2010 Berkeley Lab summer lecture, Lab scientists Jeff Long of the Materials Sciences and Nancy Brown of the Environmental Energy Technologies Division discuss their efforts to fight climate change by capturing carbon from the flue gas of power plants, as well as directly from the air

Jeffrey Long

2010-07-12T23:59:59.000Z

298

Single-molecule Fluorescence Spectroelectrochemistry of Cresyl...  

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

molecule Fluorescence Spectroelectrochemistry of Cresyl Violet. Single-molecule Fluorescence Spectroelectrochemistry of Cresyl Violet. Abstract: We coupled scanning fluorescence...

299

Nanochannel based single molecule recycling.  

E-Print Network [OSTI]

??Single molecule fluorescence measurements provide detailed information about sub-populations, transition intermediates and kinetic data for systems that are not able to be synchronized by removing (more)

Lesoine, John Frederick (1980 - )

2010-01-01T23:59:59.000Z

300

Photonic Molecules and Spectral Engineering  

E-Print Network [OSTI]

This chapter reviews the fundamental optical properties and applications of photonic molecules (PMs) photonic structures formed by electromagnetic coupling of two or more optical microcavities (photonic atoms). Controllable ...

Boriskina, Svetlana V.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Natural materials for carbon capture.  

SciTech Connect (OSTI)

Naturally occurring clay minerals provide a distinctive material for carbon capture and carbon dioxide sequestration. Swelling clay minerals, such as the smectite variety, possess an aluminosilicate structure that is controlled by low-charge layers that readily expand to accommodate water molecules and, potentially, carbon dioxide. Recent experimental studies have demonstrated the efficacy of intercalating carbon dioxide in the interlayer of layered clays but little is known about the molecular mechanisms of the process and the extent of carbon capture as a function of clay charge and structure. A series of molecular dynamics simulations and vibrational analyses have been completed to assess the molecular interactions associated with incorporation of CO2 in the interlayer of montmorillonite clay and to help validate the models with experimental observation.

Myshakin, Evgeniy M. (National Energy Technology Laboratory, Pittsburgh, PA); Romanov, Vyacheslav N. (National Energy Technology Laboratory, Pittsburgh, PA); Cygan, Randall Timothy

2010-11-01T23:59:59.000Z

302

Single molecule tracking  

DOE Patents [OSTI]

A detection system is provided for identifying individual particles or molecules having characteristic emission in a flow train of the particles in a flow cell. A position sensitive sensor is located adjacent the flow cell in a position effective to detect the emissions from the particles within the flow cell and to assign spatial and temporal coordinates for the detected emissions. A computer is then enabled to predict spatial and temporal coordinates for the particle in the flow train as a function of a first detected emission. Comparison hardware or software then compares subsequent detected spatial and temporal coordinates with the predicted spatial and temporal coordinates to determine whether subsequently detected emissions originate from a particle in the train of particles. In one embodiment, the particles include fluorescent dyes which are excited to fluoresce a spectrum characteristic of the particular particle. Photons are emitted adjacent at least one microchannel plate sensor to enable spatial and temporal coordinates to be assigned. The effect of comparing detected coordinates with predicted coordinates is to define a moving sample volume which effectively precludes the effects of background emissions. 3 figs.

Shera, E.B.

1987-10-07T23:59:59.000Z

303

Single molecule tracking  

DOE Patents [OSTI]

A detection system is provided for identifying individual particles or molecules having characteristic emission in a flow train of the particles in a flow cell. A position sensitive sensor is located adjacent the flow cell in a position effective to detect the emissions from the particles within the flow cell and to assign spatial and temporal coordinates for the detected emissions. A computer is then enabled to predict spatial and temporal coordinates for the particle in the flow train as a function of a first detected emission. Comparison hardware or software then compares subsequent detected spatial and temporal coordinates with the predicted spatial and temporal coordinates to determine whether subsequently detected emissions originate from a particle in the train of particles. In one embodiment, the particles include fluorescent dyes which are excited to fluoresce a spectrum characteristic of the particular particle. Photones are emitted adjacent at least one microchannel plate sensor to enable spatial and temporal coordinates to be assigned. The effect of comparing detected coordinates with predicted coordinates is to define a moving sample volume which effectively precludes the effects of background emissions.

Shera, E. Brooks (Los Alamos, NM)

1988-01-01T23:59:59.000Z

304

Thread bonds in molecules  

E-Print Network [OSTI]

Unusual chemical bonds are proposed. Each bond is almost covalent but is characterized by the thread of a small radius $\\sim 0.6\\times 10^{-11}$cm, between two nuclei in a molecule. The main electron density is concentrated outside the thread as in a covalent bond. The thread is formed by the electron wave function which has a tendency to be singular on it. The singularity along the thread is cut off by electron "vibrations" due to the interaction with zero point electromagnetic oscillations. The electron energy has its typical value of (1-10)eV. Due to the small tread radius the uncertainty of the electron momentum inside the thread is large resulting in a large electron kinetic energy $\\sim 1 MeV$. This energy is compensated by formation of a potential well due to the reduction of the energy of electromagnetic zero point oscillations. This is similar to formation of a negative van der Waals potential. Thread bonds are stable and cannot be created or destructed in chemical or optical processes.

Ivlev, B

2015-01-01T23:59:59.000Z

305

Development of a Cell Patterning Technique Using Poly(Ethylene Glycol) Disilane  

Science Journals Connector (OSTI)

A simple technique for controlling cell adhesion on glass substrates by surface modification using a commercially available poly(ethylene glycol) (PEG) disilane, which can bind directly to glass in ... 3T3 fibrob...

Daniel Irimia; Jens O.M. Karlsson

2003-09-01T23:59:59.000Z

306

Microcontact Imprinting of Algae on Poly(ethylene-co-vinyl alcohol) for Biofuel Cells  

Science Journals Connector (OSTI)

Microcontact Imprinting of Algae on Poly(ethylene-co-vinyl alcohol) for Biofuel Cells ... The roadmap of algae biofuels technology in the U.S. has been elucidated since 2008 (http://www.orau.gov/algae2008/resources.htm). ...

Wen-Janq Chen; Mei-Hwa Lee; James L. Thomas; Po-Hsun Lu; Ming-Huan Li; Hung-Yin Lin

2013-10-06T23:59:59.000Z

307

Comparison of Nanocomposites Prepared from Sodium, Zinc, and Lithium Ionomers of Ethylene/Methacrylic Acid Copolymers  

Science Journals Connector (OSTI)

Morphology and mechanical properties of nanocomposites prepared by melt mixing a montmorillonite-based organoclay with lithium, sodium, and zinc ionomers of poly(ethylene-co-methacrylic acid) are presented here. The effect of the type of neutralizing ...

Rhutesh K. Shah; D. R. Paul

2006-03-31T23:59:59.000Z

308

Numerical Analysis of Ethylene Injection in the Inlet of a Mach Six Scramjet.  

E-Print Network [OSTI]

??A scramjet inlet was designed for use on a small scale, Mach six, ethylene-fuelled vehicle. The inlet used strut-based cantilevered fuel injectors and a well-defined (more)

West, Jonathan Philip

2011-01-01T23:59:59.000Z

309

Composite Polymer Electrolytes Based on Poly(ethylene glycol) and Hydrophobic Fumed Silica: Dynamic  

E-Print Network [OSTI]

utilized in electrolyte processing. Introduction Rechargeable lithium batteries employing solid elec electrolytes based on poly(ethylene oxide) (PEO).1 Solid polymer electrolytes can potentially eliminate battery* Department of Chemical Engineering, North Carolina State University, Raleigh, North Carolina 27695

Raghavan, Srinivasa

310

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

311

Cyclopalladated complexes derivates of phenylhydrazones and their use as catalysts in ethylene polymerization .  

E-Print Network [OSTI]

??New cyclopalladated complexes (Pd-A, Pd-B, Pd-C) were used as catalysts in ethylene polymerization. All of them show good activity, especially at a temperature of 80 (more)

Prez, Mnica A.

2005-01-01T23:59:59.000Z

312

Ethylene mass flow measurements with an automatic CO2 laser long-path absorption system  

Science Journals Connector (OSTI)

A computer controlled CO2 laser long-path absorption system has been used in a field experiment to measure the total emission of ethylene from a petrochemical factory. The...

Persson, U; Johansson, J; Marthinsson, B; Eng, S T

1982-01-01T23:59:59.000Z

313

High sensitive and selective ethylene measurement by using a large-capacity-on-chip preconcentrator device  

Science Journals Connector (OSTI)

Abstract Using a large-capacity-on-chip preconcentrator device for selective ethylene measurement leads to some challenges. The dramatic increase of the water influence and the gas chromatography effect of the preconcentrator must be known and compensated before a good measurement with this new device can be performed. Nevertheless, after facing these challenges the small gas chromatograph presented in this paper was for the first time able to detect an ethylene concentration of 170ppbv. Deduced from this measurement a detection limit below 50ppbv can be reached, which is absolutely mandatory for shelf life prediction of climacteric fruits. New stationary phases were tested. The used packed gas chromatography column is now capable of separating vaporized water and ethylene gas from each other, which was a breakthrough in the analysis of ethylene concentrations in ambient air. It can be predicted that the system will be available at a price under 1000.

S. Janssen; T. Tessmann; W. Lang

2014-01-01T23:59:59.000Z

314

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

Science Journals Connector (OSTI)

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

N. I. Kuznetsova; A. F. Danilyuk

315

Experimental Flash Pyrolysis of High Density1 PolyEthylene under Hybrid Propulsion Conditions2  

E-Print Network [OSTI]

1/25 Experimental Flash Pyrolysis of High Density1 PolyEthylene under Hybrid Propulsion Conditions2 Poly-Ethylene (HDPE) is studied6 up to 20 000 K.s-1 , under pressure up to 3.0 MPa and at temperature Pyrolysis (2013) 1-11" DOI : 10.1016/j.jaap.2013.02.014 #12;2/25 Keywords: Polyethylene; flash pyrolysis

Boyer, Edmond

316

Ethylene as a factor in square abscission and stunting in fleahopper infested cotton  

E-Print Network [OSTI]

ETHYLENE AS A FACTOR IN SQUARE ABSCISSION AND STUNTING IN FLEAHOPPER INFESTED COTTON A Thesis by JAMES EDWARD DUFFEY Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE May 1978 Major Subject: Plant Physiology ETHYLENE AS A FACTOR IN SQUARE ABSCISSION AND STUNTING IN FLEAHOPPER INFESTED COTTON A Thesis by JAMES EDWARD DUFFEY Approved as to style and content by: (Chairman of Committee) ( ead of D part t...

Duffey, James Edward

1978-01-01T23:59:59.000Z

317

Impact of Biomass on Industry: Using Ethylene Derived from Bioethanol within the Polyester Value Chain  

Science Journals Connector (OSTI)

Impact of Biomass on Industry: Using Ethylene Derived from Bioethanol within the Polyester Value Chain ... Life cycle assessment compares environmental impacts of conventional crude oil polyester processing (white) with a biomass feedstock route (black). ... Life cycle assessment has been used to investigate the environmental impacts associated with using ethylene produced from biomass, rather than from the processing of crude oil, in the production of polyethylene terephthalate (PET). ...

P. P. Van Uytvanck; B. Hallmark; G. Haire; P. J. Marshall; J. S. Dennis

2014-03-20T23:59:59.000Z

318

Characterization of auxin-induced ethylene synthesis in four maturity genotypes of sorghum  

E-Print Network [OSTI]

the size of the container such that only slight amounts of ethylene need be released before measureable concentrations are reached. . By using tubing instead of small flasks, it was possible to reduce segment container volume to about 7. 5 ml... the size of the container such that only slight amounts of ethylene need be released before measureable concentrations are reached. . By using tubing instead of small flasks, it was possible to reduce segment container volume to about 7. 5 ml...

Franklin, Cecil Dennis

2012-06-07T23:59:59.000Z

319

Electrical conductivities, viscosities, phase diagram, nuclear magnetic resonance spectra and dielectric constants of the liquid binary system ethylene diamine-ethylene glycol  

E-Print Network [OSTI]

ethylene diamine joining the chain structure of ethylene glycol, at a stoichiometric ratio of one diamine to one glycol, the replacement of an alcohol- alcohol hydrogen bond wi. th the stronger amine-alcohol hydrogen bond, would yield an exothermic...-alcohol and amine-amine hydrogen bonds and E another exothermic one (h negative) caused by the formation of amine- alcohol hydrogen bonds. This formation of amine-alcohol hydrogen bonds is symmetric with respect to composition, as the Finby-Helper equation...

Moore, Timothy Drake

1976-01-01T23:59:59.000Z

320

Los Alamos scientists detect and track single molecules with nanoscale  

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

Nanotube "glowsticks" transform surface science tool kit Nanotube "glowsticks" transform surface science tool kit Los Alamos scientists detect and track single molecules with nanoscale carbon cylinders Researchers have now shown that semiconducting carbon nanotubes have the potential to detect and track single molecules in water. January 10, 2012 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Polysulfones for conservation in the ethylene polymer industry. Progress report No. 7, October 1979-March 1980  

SciTech Connect (OSTI)

Ethylene-SO/sub 2/ polysulfone copolymers were prepared by /sup 60/Co gamma radiation, as well as by electron-beam radiation and by thermocatalysis, as a means of incorporating a polluting waste product material such as SO/sub 2/ into ethylene polymers for the purpose of conserving ethylene feedstock. Ethylene-SO/sub 2/ copolymer was pressure molded into discs which had a high degree of hardness as well as partial transparency, but were also very brittle. Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA) indicated peak decomposition at 350/sup 0/C. Long term heat aging tests showed stability to 175/sup 0/C and initiation of decomposition at 200/sup 0/C in air after 900 h. Decomposition became severe as the temperature was increased to 300/sup 0/C. The activation energies for decomposition were 57.3 and 56.8 kcal/mole for liquid-phase and gas-phase formed copolymers, respectively. The ethylene-SO/sub 2/ copolymer was modified by the incorporation of monomeric styrene, 2-vinyl pyridine, 4-vinyl pyridine, and N-vinyl pyrrolidine. A summary of characterization studies by INCO which includes solubility, infra-red and x-ray analysis of the ethylene-SO/sub 2/ copolymer and with additives are presented.

Steinberg, M.; Johnson, R.; Elling, D.; Bernstein, P.; Varker, A.E.

1980-06-01T23:59:59.000Z

322

Controlling molecules with lasers and lasers with molecules  

E-Print Network [OSTI]

I investigate quantum control of spin in molecules using shaped ultrafast lasers and the dynamics of those lasers when their cavities are modified to include programmable molecular masks. The ability to control quantum ...

Taylor, Jason Matthew, 1977-

2007-01-01T23:59:59.000Z

323

Carbon Conference  

Science Journals Connector (OSTI)

Carbon Conference ... The Fourth Hienninl Conference on Carbon will be held at the University of Buffalo, June 15 to 19. ... The Pittsburgh Section's coal technology group will meet in the conference room at Mellon Institute, Pittsburgh, June ... ...

1959-06-01T23:59:59.000Z

324

Small angle neutron and X-ray scattering studies of carbons prepared using inorganic templates  

SciTech Connect (OSTI)

Small angle neutron (SANS) and X-ray (SAXS) scattering analyses of carbons derived from organic-loaded inorganic template materials, used as anodes in lithium ion cells, have been performed. Two clays were used as templates to load the organic precursors, pillared montmorrillonite (PILC), a layered silicate clay whose sheets have been permanently propped open by sets of thermally stable molecular props, and sepiolite, a natural channeled clay. Five different organic precursors were used to load the PILC: pyrene, styrene, pyrene/trioxane copolymer, ethylene and propylene, whereas only propylene and ethylene were used to load sepiolite. Pyrolysis took place at 700{degrees}C under nitrogen. Values such as hole radius, fractal dimension, cutoff length and density of the final carbons will be compared as a function of the clay and carbon precursors.

Sandi, G.; Thiyagarajan, P.; Winans, R.E.; Carrado, K.A.

1997-09-01T23:59:59.000Z

325

FORMATION OF C{sub n} MOLECULES IN OXYGEN-RICH INTERIORS OF TYPE II SUPERNOVAE  

SciTech Connect (OSTI)

Two reaction-rate-based kinetic models for condensation of carbon dust via the growth of precursor linear carbon chains are currently under debate: the first involves the formation of C{sub 2} molecules via radiative association of free C atoms, and the second forms C{sub 2} molecules by the endoergic reaction CO + C {yields} C{sub 2} + O. Both are followed by C captures until the linear chain eventually makes an isomeric transition to ringed carbon on which rapid growth of graphite may occur. These two approaches give vastly different results. Because of the high importance of condensable carbon for current problems in astronomy, we study these competing claims with an intentionally limited reaction rate network which clearly shows that initiation by C + C {yields} C{sub 2} + {gamma} is the dominant pathway to carbon rings. We propose an explanation for why the second pathway is not nearly as effective as its proponents calculated it to be.

Yu Tianhong; Meyer, Bradley S.; Clayton, Donald D. [Department of Physics and Astronomy, Clemson University, Clemson, SC 29634-0978 (United States)

2013-05-20T23:59:59.000Z

326

Nuclear spin isomers of guest molecules in H2@C60, H2O@C60 and other endofullerenes  

Science Journals Connector (OSTI)

...D2@C60 molecules, which might produce a plasma of ionized carbon and deuterons, would provide...fuel reactors. Report no. PPPL-2446. Princeton, NJ: Plasma Physics Laboratory, Princeton University. ( doi:10.2172/6169161...

2013-01-01T23:59:59.000Z

327

Hydrogen Storage by Polylithiated Molecules and Nanostructures  

Science Journals Connector (OSTI)

Hydrogen Storage by Polylithiated Molecules and Nanostructures ... (3) Physisorption offers the possibility of storing hydrogen in molecular form. ... Also given in Table 1 are the hydrogen binding energies, which are calculated by subtracting the total energy of the hydrogenated polylithiated molecules from the sum of the total energies of the isolated polylithiated molecules and the hydrogen molecules, divided by the number of hydrogen molecules. ...

Sleyman Er; Gilles A. de Wijs; Geert Brocks

2009-04-29T23:59:59.000Z

328

Cooling molecules in optical cavities  

SciTech Connect (OSTI)

We have studied theoretically and numerically the cooling of CN molecules in a high-finesse optical cavity and show that these molecules can be cooled from 100 mK temperatures to submillikelvin temperatures in less than 1 ms. We establish that the cooling time does not change significantly with molecular numbers and initial temperatures over a wide range. We have further studied the scaling of the system for extending the current results for hundreds of molecules to a very large molecular ensemble. The results indicate that a gas of 10{sup 9} molecules can be cooled in the cavity by use of a far-off-resonant and high-intensity pump source.

Lu Weiping; Zhao Yongkai; Barker, P. F. [Physics, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Department of Physics and Astronomy, University College London, London WC1E 6BT (United Kingdom)

2007-07-15T23:59:59.000Z

329

Carbon Cycle  

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

Carbon Cycle Carbon Cycle Latest Global Carbon Budget Estimates Including CDIAC Estimates Terrestrial Carbon Management Data Sets and Analyses Carbon Dioxide Emissions from Fossil-Fuel Consumption and Cement Manufacture, (2011) Annual Fossil-Fuel CO2 Emissions: Mass of Emissions Gridded by One Degree Latitude by One Degree Longitude (2012) Monthly Fossil-Fuel CO2 Emissions: Mass of Emissions Gridded by One Degree Latitude by One Degree Longitude (2012) Annual Fossil-Fuel CO2 Emissions: Global Stable Carbon Isotopic Signature (2012) Monthly Fossil-Fuel CO2 Emissions: Isomass (δ 13C) of Emissions Gridded by One Degree Latitude by One Degree Longitude (2012) AmeriFlux - Terrestrial Carbon Dioxide, Water Vapor, and Energy Balance Measurements Estimates of Monthly CO2 Emissions and Associated 13C/12C Values

330

Carbon Isotopes  

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

Atmospheric Trace Gases » Carbon Isotopes Atmospheric Trace Gases » Carbon Isotopes Carbon Isotopes Gateway Pages to Isotopes Data Modern Records of Carbon and Oxygen Isotopes in Atmospheric Carbon Dioxide and Carbon-13 in Methane 800,000 Deuterium Record and Shorter Records of Various Isotopic Species from Ice Cores Carbon-13 13C in CO Measurements from Niwot Ridge, Colorado and Montana de Oro, California (Tyler) 13C in CO2 NOAA/CMDL Flask Network (White and Vaughn) CSIRO GASLAB Flask Network (Allison, Francey, and Krummel) CSIRO in situ measurements at Cape Grim, Tasmania (Francey and Allison) Scripps Institution of Oceanography (Keeling et al.) 13C in CH4 NOAA/CMDL Flask Network (Miller and White) Northern & Southern Hemisphere Sites (Quay and Stutsman) Northern & Southern Hemisphere Sites (Stevens)

331

Design, synthesis and characterization of new ligands and activators for the oligomerization of ethylene by iron complexes.  

E-Print Network [OSTI]

??This thesis describes the development of new catalytic systems based upon iron complexes and their reactivity toward ethylene. First, we focused our interest on the (more)

Boudier, Adrien

2012-01-01T23:59:59.000Z

332

Carbon-Fuelled Future  

SciTech Connect (OSTI)

Whether due to changes in policy or consumption of available fossil fuels, alternative sources of energy will be required, especially given the rising global energy demand. However, one of the main factors limiting the widespread utilization of renewable energy, such as wind, solar, wave or geothermal, is our ability to store energy. Storage of energy from carbon-neutral sources, such as electricity from solar or wind, can be accomplished through many routes. One approach is to store energy in the form of chemical bonds, as fuels. The conversion of low-energy compounds, such as water and carbon dioxide, to higher energy molecules, such as hydrogen or carbon-based fuels, enables the storage of carbon-neutral energy on a very large scale. The authors work in this area is supported by the US Department of Energy Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy.

Appel, Aaron M.

2014-09-12T23:59:59.000Z

333

Single molecule measurements and molecular motors  

Science Journals Connector (OSTI)

...Hideyuki Okano and Atsushi Iriki Single molecule measurements and molecular motors...Suita, Osaka 565-0871, Japan Single molecule imaging and manipulation are...machines like molecular motors. The single molecule measurements allow a dynamic...

2008-01-01T23:59:59.000Z

334

Energy Carrier Transport In Surface-Modified Carbon Nanotubes  

E-Print Network [OSTI]

of organic molecules or inorganic nanoparticles, debundling of nanotubes by dispersing agents, and microwave irradiation. Because carbon nanotubes have unique carrier transport characteristics along a sheet of graphite in a cylindrical shape, the properties...

Ryu, Yeontack

2012-11-30T23:59:59.000Z

335

Syngas Production Using Carbon Dioxide Reforming: Fundamentals and Perspectives  

Science Journals Connector (OSTI)

Syngas can be produced from a variety of different hydrocarbon molecules by the catalysed reaction with steam, carbon dioxide or oxygen (or with various combinations of these) at high temperatures. This chapte...

Julian R. H. Ross

2014-01-01T23:59:59.000Z

336

All carbon nanotubes are not created equal  

SciTech Connect (OSTI)

This chapter presents the various factors that enter into consideration when choosing the source of carbon nanotubes for a specific application. Carbon nanotubes are giant molecules made of pure carbon. They have captured the imagination of the scientific community by the unique structure that provides superior physical, chemical, and electrical properties. However, a surprisingly wide disparity exists between the intrinsic properties determined under ideal conditions and the properties that carbon nanotubes exhibit in real world situations. The lack of uniformity in carbon nanotube properties is likely to be the main obstacle holding back the development of carbon nanotube applications. This tutorial addresses the nonuniformity of carbon nanotube properties from the synthesis standpoint. This synthesis-related nonuniformity is on top of the intrinsic chirality distribution that gives the ~1:2 ratio of metallic to semiconducting nanotubes. From the standpoint of carbon bonding chemistry the variation in the quality and reproducibility of carbon nanotube materials is not unexpected. It is an intrinsic feature that is related to the metastability of carbon structures. The extent to which this effect is manifested in carbon nanotube formation is governed by the type and the kinetics of the carbon nanotube synthesis reaction. Addressing this variation is critical if nanotubes are to live up to the potential already demonstrated by their phenomenal physical properties.

Geohegan, David B [ORNL; Puretzky, Alexander A [ORNL; Rouleau, Christopher M [ORNL

2010-01-01T23:59:59.000Z

337

Synthetic investigation of small-molecule probes.  

E-Print Network [OSTI]

??A series of small molecules was synthesized to probe three protein targets in order to elucidate the key small molecule-protein interactions required for potency. Triclosan (more)

Bromba, Caleb

2012-01-01T23:59:59.000Z

338

High Throughput Single Molecule Investigation of Transcription  

E-Print Network [OSTI]

Single Molecule Protein Folding in a Coaxial Mixer. Biophys.Kinetic Studies of Protein Folding. Anal. Chem. 76, 7169-Molecule Measurement of Protein Folding Kinetics . Science

Kim, Soohong

2012-01-01T23:59:59.000Z

339

Single-Molecule Fluorescence Analysis in Solution  

Science Journals Connector (OSTI)

Over the past five years, several groups have developed the capability to detect and identify single fluorescent molecules in solution as the molecules flow through a focused laser...

Keller, Richard A; Ambrose, W Patrick; Goodwin, Peter M; Jett, James H; Martin, John C; Wu, Ming

1996-01-01T23:59:59.000Z

340

Marketing Mother Natures Molecules  

Science Journals Connector (OSTI)

Marketing Mother Natures Molecules ... Yet molecules made by Mother Nature, or derivatives thereof, still account for nearly half of the drugs on the market. ...

LISA JARVIS

2012-02-19T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

On the Role of Subsurface Oxygen and Ethylenedioxy in Ethylene Epoxidation on Silver.  

SciTech Connect (OSTI)

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. The thermochemical stability of various three-component phases containing oxygen, ethylene, and Ag(111) was determined as a function of oxygen and ethylene chemical potential using periodic, self-consistent density functional theory calculations. Ethylenedioxy is stable over a wide range of conditions, although its formation may be kinetically hindered in some cases. Ethylene and ethylene-containing oxametallacycles are also found to be stable over a reasonably large range of chemical potentials, particularly if ethylenedioxy formation is neglected. Furthermore, subsurface oxygen (Osb) is seen to be present in the three-component systems at a variety of conditions; minimum energy path calculations performed at a coverage of 1/2 ML Osb suggest that this species may actually increase the reaction barrier for ring closure leading to ethylene oxide elimination from Ag(111).

Greeley, Jeffrey P.; Mavrikakis, Manos

2007-05-12T23:59:59.000Z

342

Molecular Self-Assembly of Jointed Molecules on a Metallic Substrate: From Single Molecule to Monolayer**  

E-Print Network [OSTI]

Molecular Self-Assembly of Jointed Molecules on a Metallic Substrate: From Single Molecule molecules adsorbed on metallic substrates. In this situation, self-assembled structures can be understood in relative simple terms considering molecule-molecule versus molecule-substrate interactions. In contrast

Paris-Sud XI, Université de

343

Water-soluble carbon nanotube compositions for drug delivery and medicinal applications  

DOE Patents [OSTI]

Compositions comprising a plurality of functionalized carbon nanotubes and at least one type of payload molecule are provided herein. The compositions are soluble in water and PBS in some embodiments. In certain embodiments, the payload molecules are insoluble in water. Methods are described for making the compositions and administering the compositions. An extended release formulation for paclitaxel utilizing functionalized carbon nanotubes is also described.

Tour, James M.; Lucente-Schultz, Rebecca; Leonard, Ashley; Kosynkin, Dmitry V.; Price, Brandi Katherine; Hudson, Jared L.; Conyers, Jr., Jodie L.; Moore, Valerie C.; Casscells, S. Ward; Myers, Jeffrey N.; Milas, Zvonimir L.; Mason, Kathy A.; Milas, Luka

2014-07-22T23:59:59.000Z

344

Carbon Nanotubes.  

E-Print Network [OSTI]

?? Carbon nanotubes have extraordinary mechanical, electrical, thermal andoptical properties. They are harder than diamond yet exible, have betterelectrical conductor than copper, but can also (more)

Fredriksson, Tore

2014-01-01T23:59:59.000Z

345

Production of high-V. I. oils by thermal decomposition of ethylene/propylene copolymer  

SciTech Connect (OSTI)

The process of copolymerization of ethylene with propylene can be readily controlled, so that copolymers with practically any desired composition can be obtained, with a specific alternation of monomer units and with a specific number of lateral branches. This paper examines the preparation of high-V.I. synthetic lube oils by the thermal decomposition of an ethylene/propylene copolymer with a molecular weight of 100,000-1,000,000, containing 40-85% (mole) ethylene, synthesized on ZieglerNatta organometallic systems. It determines the distillation curve, and the physicochemical and service properties of the distillation cuts. It finds that the oils have high viscosity indices, low solid points, and good oxidation resistance and anticorrosion properties. These oils can be used in vehicles and mechanisms operating in the Far North and in the Arctic.

Seidov, N.M.; Abasov, A.I.; Abasova, T.M.; Bairamov, V.A.; Kuliev, R.Sh.; Mustafaev, A.M.

1982-09-01T23:59:59.000Z

346

High-order harmonic generation and multi-photon ionization of ethylene in laser fields  

E-Print Network [OSTI]

Applying time-dependent local density approximation (TDLDA), we study the high-order harmonic generation (HHG) of ethylene subjected to the one-color ($\\omega=2.72$ eV) and the two-color ($\\omega_1=2.72$ eV and $\\omega_2=5.44$ eV) ultrashort intense laser pulses. The HHG spectrum of ethylene in the one-color laser field shows the obvious plateaus and odd order harmonics are produced while the two-color laser field can result in the breaking of the symmetry and generation of the even order harmonic. The ionization probabilities are obtained showing the increase of the ionization probability of higher charge state by the two-color laser field. The temporal structures of HHG spectrum of ethylene is explored by means of the time-frequency analysis showing new insights of the HHG mechanisms in the one-color and the two-color laser fields.

Wang, Z P; Reinhard, P -G; Suraud, E; Zhang, F S

2009-01-01T23:59:59.000Z

347

Process for the production of ethylene and other hydrocarbons from coal  

SciTech Connect (OSTI)

A process is claimed for the production of substantial amounts of ethylene and other hydrocarbon compounds, such as benzene from coal. Coal is reacted with methane at a temperature in the approximate range of 500/sup 0/C to 1100/sup 0/C at a partial pressure less than about 200 psig for a period of less than 10 seconds, and preferably at a temperature of approximately 850/sup 0/C, and a partial pressure of 50 psig for a period of approximately 2 seconds. Ethylene and other hydrocarbon compounds may be separated from the product stream so produced, and the methane recycled for further production of ethylene. In another embodiment, other compounds produced, such as by-product tars, may be burned to heat the recycled methane.

Steinberg, M.; Fallon, P.

1982-02-16T23:59:59.000Z

348

Capturing carbon | EMSL  

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

Capturing carbon Capturing carbon New technology enables molecular-level insight into carbon sequestration Carbon sequestration is a potential solution for reducing greenhouse...

349

Vibrational relaxation of trapped molecules  

Science Journals Connector (OSTI)

Vibrational relaxation of trapped molecules due to collisions with cold atoms is investigated using the results of quantum-mechanical scattering calculations. Trap loss is analyzed using an exactly solvable kinetic model that includes direct collisional quenching and an indirect process of vibrational predissociation. At low atom density, the relaxation is due primarily to collisional quenching. At high atom density, the relaxation involves additional time scales due to the formation and decay of van der Waals complexes. It is shown that the most weakly bound state of the van der Waals complex for a given diatomic vibrational level controls the relaxation at all atom densities. Possible experiments using trapped molecules are discussed.

R. C. Forrey; V. Kharchenko; N. Balakrishnan; A. Dalgarno

1999-03-01T23:59:59.000Z

350

Phase equilibria of binary and ternary n-alkane solutions in supercritical ethylene, 1-butene, and ethylene + 1-butene: Transition from type A through LCST to U-LCST behavior predicted and confirmed experimentally  

SciTech Connect (OSTI)

Binary phase equilibria of C[sub 20] +, C[sub 30] +, and C[sub 40] + ethylene are correlated with three equations of state, the Redlich-Kwong-Soave (Soave), the generalized van der Waals-Prigogine (vdW-P), and the statistical associating fluid theory (SAFT), with special emphasis on the mixture critical region. The SAFT correlation is found to be the most reliable. SAFT predictive powers are tested on C[sub 26] + ethylene and a new set of experimental data taken in this work for C[sub 36] + 1-butene and C[sub 36] + ethylene + 1-butene. The SAFT predictions are found to be in good agreement with the experimental data. Equally important, the SAFT predictions allow for understanding the continuous transition of phase behavior, from type A (C[sub 36] + 1-butene) through LCST (C[sub 36] + ethylene + 1-butene) to U-LCST (C[sub 36] + ethylene).

Gregg, C.J.; Stein, F.P. (Lehigh Univ., Bethlehem, PA (United States). Dept. of Chemical Engineering); Chen, Shenjer; Radosz, M. (Exxon Research and Engineering Co., Annandale, NJ (United States))

1993-07-01T23:59:59.000Z

351

Use of functionalized metallocene copolymers from ethylene and polar olefins as compatibilizers for low-density-polyethylene/starch and low-density-polyethylene/dextran blends .  

E-Print Network [OSTI]

??Functionalized metallocene copolymers synthesized from ethylene with 5-hexen-1-ol and ethylene with 10-undecen-1-ol were used as compatibilizers in LDPE/starch and LDPE/dextran blends in order to improve (more)

Domnguez Barcel, Ana Mara

2006-01-01T23:59:59.000Z

352

Effect of nano-fibers on the stress-strain behavior of semi-crystalline poly(ethylene terephthalate) at different strain rates  

E-Print Network [OSTI]

Uniaxial compression tests were performed on amorphous poly(ethylene terephthalate) (PET), amorphous poly(ethylene terephthalate)- glycol (PETG), semi-crystalline PET, and semicrystalline PET with various amounts of ...

Cohen, Ellann

2008-01-01T23:59:59.000Z

353

Permeation of ethylene and ethane through sulfonated polysulfones and sulfonated poly(phenylene oxide) ion exchange membranes  

SciTech Connect (OSTI)

Permeation of ethylene and ethane is sulfonated poly(phenylene oxide), sulfonated bisphenol A polyarylethersulfone and sulfonated hexafluorobisphenol A polyarylethersulfone (6F-SPS) exchanged with Ag{sup +} ions were measured as a function of degree of sulfonation, temperature and trans membrane differential pressure. The data were compared with the permeation results for these membranes in acid form and alkaline metal salt form. Membranes exchanged with Ag{sup +} ions displayed enhanced etylene permeability and ethylene-ethane separation factors. The enhancement in transport of ethylene in ion exchange membranes is apparently related to an increase in ethylene solubility affected by complexation of ethylene with immobilized Ag{sup +} ions. A substantial increase in ethylene permeation rate and separation factor was observed when the feed gas was saturated with water vapors. Enhanced permeation/separation were attributed to an increase in the mobility of silver ions in water plasticized membranes. Membranes plasticized with glycerol exhibited high ethylene permeation rate and ethylene/ethane separation factors in dry feed gas streams that were comparable with permeation rates in water plasticized membranes.

Yurkovetsky, A.; Watterson, A. [Univ. of Massachusetts, Lowell, MA (United States); Bikson, B. [Innovative Membrane Systems, Inc., Norwood, MA (United States); Kharas, G.B. [DePaul Univ., Chicago, IL (United States)

1993-12-31T23:59:59.000Z

354

Gas-Surface Energy Exchange in Collisions of Helium Atoms with Aligned Single-Walled Carbon  

E-Print Network [OSTI]

1 Gas-Surface Energy Exchange in Collisions of Helium Atoms with Aligned Single-Walled Carbon #12;2 ABSTRACT Since gas flows in micro/nano devices are dominated by the interaction of gas molecules accommodation of gas molecules on surfaces. The scattering of gas molecules on quartz surfaces covered with VA

Maruyama, Shigeo

355

Post-transcriptional regulation of ethylene perception and signaling in Arabidopsis  

SciTech Connect (OSTI)

The simple gas ethylene functions as an endogenous regulator of plant growth and development, and modulates such energy relevant processes as photosynthesis and biomass accumulation. Ethylene is perceived in the plant Arabidopsis by a five-member family of receptors related to bacterial histidine kinases. Our data support a general model in which the receptors exist as parts of larger protein complexes. Our goals have been to (1) characterize physical interactions among members of the signaling complex; (2) the role of histidine-kinase transphosphorylation in signaling by the complex; and (3) the role of a novel family of proteins that regulate signal output by the receptors.

Schaller, George Eric

2014-03-19T23:59:59.000Z

356

Building a Molecule Building Structures in Moe  

E-Print Network [OSTI]

14 Chapter 3 Building a Molecule #12;15 Building Structures in Moe Dorzolamide Exercise 1 #12;16 Open the Molecule Builder · Open the Molecule Builder panel using MOE | Edit | Build | Molecule, the chiral center will be either R or S, and one of the two will be highlighted in green. The green

Fischer, Wolfgang

357

Cost Estimates for New Molecules  

Science Journals Connector (OSTI)

Cost Estimates for New Molecules ... Once this has been carried out, the projected cost/kilogram for the new drug substance (if only raw material costs and no manufacturing/overhead/labour costs are considered) may well come down by a factor of 10 or even 100, and this is often more acceptable to management trying to make strategic decisions about potential profitability. ...

Trevor Laird

2005-02-22T23:59:59.000Z

358

Supplemental Data. Linkies et al. (2009). Ethylene interacts with abscisic acid to regulate endosperm rupture during germination; a comparative approach using Lepidium sativum (cress)  

E-Print Network [OSTI]

Supplemental Data. Linkies et al. (2009). Ethylene interacts with abscisic acid to regulate categories (Holdsworth et al., 2008). (A-C) The TAGGIT analysis suggests that ethylene-related transcripts category 'ethylene' are for 'all transcrips' and 'regulated transcripts' in (A) 144 (2.2%) and 16 (3

Leubner, Gerhard

359

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

E-Print Network [OSTI]

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

360

The spectrum of ethylene from microwave to submillimetre-wave F. WILLAERTy, J. DEMAISON*y, L. MARGULESy, H. MA DERz,  

E-Print Network [OSTI]

The spectrum of ethylene from microwave to submillimetre-wave F. WILLAERTy, J. DEMAISON*y, L7 ¼ 1 and v8 ¼ 1 of ethylene have been measured in the range going from microwave to submillimetre distortion constants and the Coriolis interaction constants up to third order. 1. Introduction Ethylene (or

Giesen, Thomas

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Polyamines and Ethylene: Biochemistry, Physiology, and Interactions, HE Flores, RN Arteca, JC Shannon, eds, Copyright 1990, American Society of Plant Physiologists  

E-Print Network [OSTI]

Polyamines and Ethylene: Biochemistry, Physiology, and Interactions, HE Flores, RN Arteca, JC Shannon, eds, Copyright 1990, American Society of Plant Physiologists Polyamine and Ethylene Biosynthesis hypothesis (7,13) that (a) ethylene is a major suppressor of embryogenesis, and its production is promoted

362

Ensemble effects on ethylene dehydrogenation on PdAu(001) surfaces investigated with first-principles calculations and nudged-elastic-band simulations  

E-Print Network [OSTI]

Ensemble effects on ethylene dehydrogenation on PdAu(001) surfaces investigated with first on adsorption and dehydrogenation of ethylene on PdAu 001 bimetallic surfaces are systematically investigated that ethylene dehydrogenation is inhabited under ambient reaction temperature on the most popular second

Gong, Xingao

363

Stepwise Quenching of Exciton Fluorescence in Carbon Nanotubes  

E-Print Network [OSTI]

1 Stepwise Quenching of Exciton Fluorescence in Carbon Nanotubes by Single Molecule Reactions with individual single-walled carbon nanotubes are observed, and luminescence quenching analysis reveals the diffusional range of excitons in semiconducting nanotubes. *To whom correspondence should be addressed

Paris-Sud XI, Université de

364

Hydrogen Raman shifts in carbon nanotubes from molecular dynamics simulation  

E-Print Network [OSTI]

Hydrogen Raman shifts in carbon nanotubes from molecular dynamics simulation S.J.V. Frankland *, D hydrogen in individual single-shell carbon nanotubes and nanotube ropes using a semiclassical model. The calculations predict that isolated hydrogen molecules inside of nanotubes have a Raman frequency that increases

Brenner, Donald W.

365

Multiple events on single molecules: Unbiased estimation in single-molecule biophysics  

E-Print Network [OSTI]

Multiple events on single molecules: Unbiased estimation in single-molecule biophysics Daniel A, Princeton, NJ, December 6, 2005 (received for review June 24, 2005) Most analyses of single-molecule of a motor protein acting on a single molecule must not exceed the total molecule length. We have developed

Dekker, Nynke

366

Image Analysis of Defocused Single-Molecule Images for Three-Dimensional Molecule Orientation Studies  

E-Print Network [OSTI]

Image Analysis of Defocused Single-Molecule Images for Three-Dimensional Molecule Orientation applied to determine three- dimensional molecule orientations in defocused single-molecule images. The developed algorithm exploits the excellent agreement between electrodynamic calculations of single-molecule

Enderlein, Jörg

367

Molecular plasmonics: light meets molecules at the nanoscale  

Science Journals Connector (OSTI)

...micellar poly(styrene)-b-poly(ethylene oxide) films-size and interparticle...Reimhult2010Self-assembly of iron oxide-poly(ethylene glycol) core-shell nanoparticles at...S. R. Sershen, B. Rivera, R. E. Price, J. D. Hazle, and N. J. Halas2003Nanoshell-mediated...

2011-01-01T23:59:59.000Z

368

Incoherent x-ray scattering in single molecule imaging  

E-Print Network [OSTI]

Imaging of the structure of single proteins or other biomolecules with atomic resolution would be enormously beneficial to structural biology. X-ray free-electron lasers generate highly intense and ultrashort x-ray pulses, providing a route towards imaging of single molecules with atomic resolution. The information on molecular structure is encoded in the coherent x-ray scattering signal. In contrast to crystallography there are no Bragg reflections in single molecule imaging, which means the coherent scattering is not enhanced. Consequently, a background signal from incoherent scattering deteriorates the quality of the coherent scattering signal. This background signal cannot be easily eliminated because the spectrum of incoherently scattered photons cannot be resolved by usual scattering detectors. We present an ab initio study of incoherent x-ray scattering from individual carbon atoms, including the electronic radiation damage caused by a highly intense x-ray pulse. We find that the coherent scattering pa...

Slowik, Jan Malte; Dixit, Gopal; Jurek, Zoltan; Santra, Robin

2014-01-01T23:59:59.000Z

369

Wood plastic composites based on microfibrillar blends of high density polyethylene/poly(ethylene terephthalate)  

E-Print Network [OSTI]

Wood plastic composites based on microfibrillar blends of high density polyethylene January 2010 Keywords: Wood plastic composites Poly(ethylene terephthalate) Polyethylene Extrusion a b into wood plastic composites through a two-step reactive extrusion technology. Wood flour was added into pre

370

Performance of a direct ethylene glycol fuel cell with an anion-exchange membrane  

E-Print Network [OSTI]

of an anion-exchange membrane with non-platinum electrocatalysts at both the anode and cathode on the development and performance test of an alkaline direct ethylene glycol fuel cell. The fuel cell consists with the existing electrocatalysts at low temperatures; as a result, the main product of ethanol oxidation reaction

Zhao, Tianshou

371

Preparation and Properties of Poly(ethylene oxide) Star Nicholas A. Peppas, Ankush Argade, Saumitra Bhargava  

E-Print Network [OSTI]

(ethylene oxide) (PEO) star polymers were prepared by anionic polymerization of methacryloyl chloride and glyceryl) of molecular weight 400. The final product was washed with methylene chloride and analyzed with infrared with sequential polymerization of multifunctional monomers from styrene and divinylbenzene (DVB).1 First

Peppas, Nicholas A.

372

Ethylene adsorption on Si(100)21:?A high-resolution photoemission study  

Science Journals Connector (OSTI)

The adsorption of ethylene on Si(100)21 has been investigated at room temperature by high-resolution synchrotron radiation photoemission in the exposure range: 11000 L. A consistent picture in favor of molecularly di-? bonded ethylene is obtained from the analysis of the photoemission spectral features, which shows the progressive decreasing of the surface states in the valence band and the Si 2p features related to the surface dimers upon adsorption. By careful fitting of the Si 2p complex envelope, the appearance of a component in the Si 2p core-level spectrum is evidenced already after 1 L exposure to ethylene. This component, which grows with exposure, is assigned to the formation of two Si-C bonds per dimer as a result of ethylene adsorption. The line-shape analysis by model functions permits us to follow the symmetrization of Si-Si dimers, which are known to be asymmetric on the clean surface, and the growth of a Si-C related spectral component upon adsorption. Relative quantitative analysis of the various peak components suggests that the intensity increase of the new component almost completely parallels the progressive decrease of the surface dimer components. No evidence for carbide formation has been found from the C 1s spectrum.

M. P. Casaletto; R. Zanoni; M. Carbone; M. N. Piancastelli; L. Aballe; K. Weiss; K. Horn

2000-12-15T23:59:59.000Z

373

Recovery of ethylene glycol from used antifreeze, Phase 1. Market analysis. Final report  

SciTech Connect (OSTI)

Objective is to conduct a market analysis on the recovery of ethylene glycol from used antifreeze. The report begins with a theoretical analysis of various recovery processes. An estimate of the annual energy savings from an ethylene glycol recycle industry is made. The basic manufacturing process is discussed and the total production energy requirement is shown to be approximately 15,000 BTU per pound ethylene glycol. The plant used in the baseline case processes 400,000 gallons of used antifreeze and yields 1.82 million pounds of ethylene glycol per year. This amount of used antifreeze would be available for recycle from service stations (at a price of $0.05 per pound) from an area with a population of one million inhabitants. Laboratory analyses of used antifreeze samples were made. Tests were performed to determine if oil and antifreeze could be collected as a mixture and then separated during the recovery process. Antifreeze production levels in the United States are typically around 200 million gallson per year. There is a willingness to recycle antifreeze if the price is high enough. The economic analysis of the recycle process indicates a total plant cost of $448,200 and an initial investment of $633,268. The case of combined oil and antifreeze is considered.

Strand, M.J.; Uvelli, D.A.

1986-09-01T23:59:59.000Z

374

Microwave Enhanced Direct Cracking of Hydrocarbon Feedstock for Energy Efficient Production of Ethylene and Propylene.  

SciTech Connect (OSTI)

This project demonstrated microwave cracking of ethane with good product conversion and ethylene selectivity, with a short residence time ({approx}0.001 sec). The laboratory scale equipment was designed and built, along with concept designs for larger scale implementation. The system was operated below atmospheric pressures, in the range of 15-55 torr, with argon as a carrier gas. The measured products included hydrogen, methane, acetylene, and ethylene. The results followed similar trends to those predicted by the modeling software SPYRO{reg_sign}, with the exception that the microwave appeared to produce slightly lower amounts of ethylene and methane, although enhanced analytical analysis should reduce the difference. Continued testing will be required to verify these results and quantify the energy consumption of microwave vs. conventional. The microwave cracking process is an attractive option due to the possibility of selectively heating the reaction volume rather than the reactor walls, which may allow novel reactor designs that result in more efficient production of ethylene. Supplemental studies are needed to continue the laboratory testing and refine processing parameters.

Shulman, Holly; Fall, Morgana; Wagner, Eric; Bowlin, Ricardo

2012-02-13T23:59:59.000Z

375

A Study of Cu(I)-Ethylene Complexation for OlefinParaffin Separation  

E-Print Network [OSTI]

. An alternative olefin­paraffin separation process with lower energy consumption would significantly decrease oper. Such an absorption method eliminates the need for refrigeration, thus increasing energy efficiency and reducing serves as a key process in the production of many industrial chemicals such as ethylene (95 million tons

Eldridge, R. Bruce

376

Adsorption of CF4 on the Internal and External Surfaces of Opened Single-Walled Carbon Nanotubes:? A Vibrational Spectroscopy Study  

Science Journals Connector (OSTI)

Infrared spectroscopy has been used to make the first experimental discrimination between molecules bound by physisorption on the exterior surface of carbon single-walled nanotubes (SWNTs) and molecules bound in the interior. In addition, the selective ...??

Oleg Byl; Petro Kondratyuk; Scott T. Forth; Stephen A. FitzGerald; Liang Chen; J. Karl Johnson; John T. Yates, Jr.

2003-04-18T23:59:59.000Z

377

Chemical Recycling of Carbon Dioxide to Methanol and Dimethyl Ether: From Greenhouse Gas to Renewable, Environmentally Carbon Neutral Fuels and Synthetic Hydrocarbons  

Science Journals Connector (OSTI)

Chemical Recycling of Carbon Dioxide to Methanol and Dimethyl Ether: From Greenhouse Gas to Renewable, Environmentally Carbon Neutral Fuels and Synthetic Hydrocarbons ... (1, 3-6) Methanol and derived dimethyl ether (DME) are also excellent fuels in internal combustion engines (ICE) and in a new generation of direct oxidation methanol fuel cells (DMFC), as well as convenient starting materials for producing light olefins (ethylene and propylene) and subsequently practically any derived hydrocarbon product. ... Methanol produced this way was used in the 19th century for lighting, cooking, and heating purposes but was later replaced by cheaper fuels, especially kerosene. ...

George A. Olah; Alain Goeppert; G. K. Surya Prakash

2008-12-08T23:59:59.000Z

378

Thermodynamics of Water Entry in Hydrophobic Channels of Carbon Nanotubes  

E-Print Network [OSTI]

Experiments and computer simulations demonstrate that water spontaneously fills the hydrophobic cavity of a carbon nanotube. To gain a quantitative thermody- namic understanding of this phenomenon, we use the recently developed Two Phase Thermodynamics (2PT) method to compute translational and rotational entropies of confined water molecules inside single-walled carbon nanotubes and show that the increase in energy of a water molecule inside the nanotube is compensated by the gain in its rotational entropy. The confined water is in equilibrium with the bulk wa- ter and the Helmholtz free energy per water molecule of confined water is the same as that in the bulk within the accuracy of the simulation results. A comparison of translational and rotational spectra of water molecules confined in carbon nanotubes with that of bulk water shows significant shifts in the positions of the spectral peaks that are directly related to the tube radius.

Hemant Kumar; Biswaroop Mukherjee; Shiang-Tai Lin Chandan Dasgupta; A. K. Sood; Prabal K. Maiti

2011-08-19T23:59:59.000Z

379

Reactive scattering of small molecules  

SciTech Connect (OSTI)

In an ultrahigh vacuum system equipped with an effusive molecular beam source, several molecular beam relaxation spectroscopy studies were performed on a stepped Pt(111) single crystal. Carbon monoxide adsorption/desorption was studied as a function of sulfur coverage. Sulfur adsorption at step sites was found to slightly decrease the sticking probability but strongly decrease the carbon monoxide interaction with the surface. The kinetics of desorption were characteristic of the tightest binding state accessible to the adsorbed carbon monoxide. Hydrogen atom recombination and desorption was studied following formaldehyde decomposition. The reaction was second order and the desorption proceeded by two pathways: one associated with the step sites and the other with the terraces. The activation energies for desorption were 25 and 19 kcal/mol for the steps and terraces, respectively and the pre-exponential factors were of the order 0.01 cm/sup 2//s. Adsorbed sulfur and high carbon monoxide surface coverages blocked the high energy hydrogen recombination pathway. The kinetics and mechanism of the hydrogen-oxygen reaction was studied in the temperature range 400 to 1000 K. The reaction proceeded by the sequential addition of hydrogen to oxygen, first to form hydroxyls and then to form water.

Gdowski, G.E.

1985-01-01T23:59:59.000Z

380

Simulation of a small molecule analogue of a lithium ionomer in an external electric field  

SciTech Connect (OSTI)

We have investigated the ion dynamics in lithium-neutralized 2-pentylheptanoic acid, a small molecule analogue of a precise poly(ethylene-co-acrylic acid) lithium ionomer. Atomistic molecular dynamics simulations were performed in an external electric field. The electric field causes alignment of the ionic aggregates along the field direction. The energetic response of the system to an imposed oscillating electric field for a wide range of frequencies was tracked by monitoring the coulombic contribution to the energy. The susceptibility found in this manner is a component of the dielectric susceptibility typically measured experimentally. A dynamic transition is found and the frequency associated with this transition varies with temperature in an Arrhenius manner. The transition is observed to be associated with rearrangements of the ionic aggregates.

Waters, Sara M.; McCoy, John D., E-mail: mccoy@nmt.edu; Brown, Jonathan R. [Department of Materials Engineering, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801 (United States)] [Department of Materials Engineering, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801 (United States); Frischknecht, Amalie L. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)] [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

2014-01-07T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Carbon Sequestration  

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

David a. Lang David a. Lang Project Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236 412-386-4881 david.lang@netl.doe.gov andrew chizmeshya Arizona State University Center for Solid State Science Tempe, AZ 85287-1704 480-965-6072 chizmesh@asu.edu A Novel ApproAch to MiNerAl cArboNAtioN: eNhANciNg cArboNAtioN While AvoidiNg MiNerAl pretreAtMeNt process cost Background Carbonation of the widely occurring minerals of the olivine group, such as forsterite (Mg 2 SiO 4 ), is a potential large-scale sequestration process that converts CO 2 into the environmentally benign mineral magnesite (MgCO 3 ). Because the process is exothermic, it inherently offers low-cost potential. Enhancing carbonation reactivity is the key to economic viability. Previous

382

Carbon Nanotubes  

Science Journals Connector (OSTI)

A broad review of the structure and properties of carbon nanotubes is presented. Particular emphasis is given to ... dimensional density of states predicted for single-wall nanotubes of small diameter. The eviden...

M. S. Dresselhaus; G. Dresselhaus

2000-01-01T23:59:59.000Z

383

Carbon Fiber  

ScienceCinema (OSTI)

Lee McGetrick leads ORNL's effort to produce light, durable carbon fiber at lower cost -- a key to improvements in manufacturing that will produce more fuel-efficient vehicles and other advances.

McGetrick, Lee

2014-07-23T23:59:59.000Z

384

Carbon Fiber  

SciTech Connect (OSTI)

Lee McGetrick leads ORNL's effort to produce light, durable carbon fiber at lower cost -- a key to improvements in manufacturing that will produce more fuel-efficient vehicles and other advances.

McGetrick, Lee

2014-04-17T23:59:59.000Z

385

Single Molecule Analysis Research Tool (SMART): An Integrated Approach for Analyzing Single Molecule Data  

E-Print Network [OSTI]

Single Molecule Analysis Research Tool (SMART): An Integrated Approach for Analyzing Single, Stanford University, Stanford, California, United States of America Abstract Single molecule studies have approach for analyzing these data in the freely available software package SMART: Single Molecule Analysis

Herschlag, Dan

386

Ag(I) Ion Functionalized Porous Organic Polymers As a New Platform for Highly Selective Adsorption of Ethylene over Ethane  

SciTech Connect (OSTI)

We report herein a strategy of incorporating air stable Ag(I) ions into water stable, high surface area porous organic polymer (POP) affording significant increase in ethylene uptake capacity and extremely high Qst for ethylene (over 100 kJ/mol at low ethylene load-ing) as illustrated in the context of Ag(I) ion functionalized PAF-1, PAF-1-SO3Ag. IAST calculations using single-component-isotherm data and equimolar ethylene/ethane ratio at 296 K reveal PAF-1-SO3Ag shows exceptionally high ethylene/ethane adsorption selectivi-ty (Sads: 27 to 125), far surpassing benchmark zeolite and any other MOF reported in literature. This alongside excellent water/air stability, high ethylene uptake capacity, and mild regeneration requirements make PAF-1-SO3Ag hold promise for adsorption-based eth-ylene/ethane separations, paving a way to develop Ag(I) ion function-alized POPs as a new platform for highly selective adsorption of eth-ylene over ethane.

LI, Baiyan [University of South Florida, Tampa; Zhang, Yiming [University of South Florida, Tampa; Ma, Dingxuan [State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University; Wu, Zili [ORNL; Ma, Shengqian [University of South Florida, Tampa

2014-01-01T23:59:59.000Z

387

Adsorption and hydrogenation of ethylene, 1-hexene, and benzene and CO adsorption on Pt/Al/sub 2/O/sub 3/ and Pt-Sn/Al/sub 2/O/sub 3/ catalysts  

SciTech Connect (OSTI)

Adsorption and hydrogenation of ethylene, 1-hexene, and benzene, and carbon monoxide adsorption on alumina-supported Pt and Pt-Sn catalysts were studied. Gravimetric experiments and infrared (IR) absorption spectroscopy combined with chemisorption measurements were used for this purpose. Additionally fresh and coked catalysts were characterized by the IR spectra of CO and chemisorption data. Added tin causes a slight increase in benzene adsorption and a distinct decrease in ethylene and 1-hexene uptakes, whereas the hydrogenation activity is inhibited. Adsorption and catalytic data with benzene can be explained by a model of flat adsorption on Pt/Al/sub 2/O/sub 3/ and tilted adsorption on Pt-Sn/Al/sub 2/O/sub 3/ and are consistent with electronic modification of platinum by tin. Electronic interaction between platinum and tin is also indicated by the IR data. The most active sites for hydrocarbon decomposition on the platinum surface are the same as those on which carbon monoxide is multiply bonded. Deposited coke and tin block the same active sites on the platinum surface.

Palazov, A.; Bonev, C.; Shopov, D.; Lietz, G.; Sarkany, A.; Voelter, J.

1987-02-01T23:59:59.000Z

388

Dominoes in Carbon Nanotubes  

Science Journals Connector (OSTI)

We demonstrate by molecular dynamics simulations that the domino process can be developed in single-walled carbon nanotubes (SWCNTs). Once a section of a SWCNT with an appropriate diameter (>3.5??nm) is collapsed, the successive collapse of the neighboring portions can generate a domino wave along the longitudinal direction of the tube. The wave is driven by vanderWaals potential energy and its natural speed can be up to 1??km/s. Molecules inside the SWCNT can be accelerated by the domino wave and finally shot out. The finding shows for the first time that a SWCNT can be an energy supplier, which provides opportunities for designing new concept (domino-driven) nanoelectromechanical system devices.

Tienchong Chang

2008-10-21T23:59:59.000Z

389

Single molecule level absorption spectroscopy in solution  

Science Journals Connector (OSTI)

Until today the detection and identification of molecules in extremely low concentration or quantity is ... In particular this is the case if the molecules must be detected among of a multitude ... Today, devices...

R. Bornemann; E. Thiel

1999-01-01T23:59:59.000Z

390

Single-Molecule Imaging in Live Cells  

Science Journals Connector (OSTI)

This chapter provides a comprehensive overview of how single-molecule imaging is achieved in live cells. The ... with a particular focus on how they influence single-molecule imaging in live cells. A few fluoresc...

Jie Xiao

2009-01-01T23:59:59.000Z

391

Imaging Oxygen Molecules Up Close | EMSL  

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

Imaging Oxygen Molecules Up Close Imaging Oxygen Molecules Up Close ARRA-enabled upgrades enhance research capabilities STM images of the same TiO2(110) area upon O2 chemisorption...

392

In situ Formation of Highly Conducting Covalent Au-C Contacts for Single-Molecule Junctions  

SciTech Connect (OSTI)

Charge transport across metal-molecule interfaces has an important role in organic electronics. Typically, chemical link groups such as thiols or amines are used to bind organic molecules to metal electrodes in single-molecule circuits, with these groups controlling both the physical structure and the electronic coupling at the interface. Direct metal-carbon coupling has been shown through C60, benzene and {pi}-stacked benzene but ideally the carbon backbone of the molecule should be covalently bonded to the electrode without intervening link groups. Here, we demonstrate a method to create junctions with such contacts. Trimethyl tin (SnMe{sub 3})-terminated polymethylene chains are used to form single-molecule junctions with a break-junction technique. Gold atoms at the electrode displace the SnMe{sub 3} linkers, leading to the formation of direct Au-C bonded single-molecule junctions with a conductance that is {approx}100 times larger than analogous alkanes with most other terminations. The conductance of these Au-C bonded alkanes decreases exponentially with molecular length, with a decay constant of 0.97 per methylene, consistent with a non-resonant transport mechanism. Control experiments and ab initio calculations show that high conductances are achieved because a covalent Au-C sigma ({sigma}) bond is formed. This offers a new method for making reproducible and highly conducting metal-organic contacts.

Cheng, Z.L.; Hybertsen, M.; Skouta, R.; Vazquez, H.; Widawsky, J.R.; Schneebeli, S.; Chen, W.; Breslow, R.; Venkataraman, L.

2011-06-01T23:59:59.000Z

393

Low Carbon Fuel Standards  

E-Print Network [OSTI]

gas, or even coal with carbon capture and sequestration. Afuels that facilitate carbon capture and sequestration. Forenergy and could capture and sequester carbon emissions.

Sperling, Dan; Yeh, Sonia

2009-01-01T23:59:59.000Z

394

Nanometer Resolution Imaging by SIngle Molecule Switching  

SciTech Connect (OSTI)

The fluorescence intensity of single molecules can change dramatically even under constant laser excitation. The phenomenon is frequently called "blinking" and involves molecules switching between high and low intensity states.[1-3] In additional to spontaneous blinking, the fluorescence of some special fluorophores, such as cyanine dyes and photoactivatable fluorescent proteins, can be switched on and off by choice using a second laser. Recent single-molecule spectroscopy investigations have shed light on mechanisms of single molecule blinking and photoswitching. This ability to controllably switch single molecules led to the invention of a novel fluorescence microscopy with nanometer spatial resolution well beyond the diffraction limit.

Hu, Dehong; Orr, Galya

2010-04-02T23:59:59.000Z

395

Antagonistic Interaction between Abscisic Acid and Jasmonate-Ethylene Signaling Pathways Modulates Defense Gene Expression and Disease Resistance in Arabidopsis  

Science Journals Connector (OSTI)

...address: Commonwealth Scientific and Industrial Research Organization, Plant Industry...internal spacer of F. oxysporum (National Center for Biotechnology Information accession...shoot growth by endogenous ABA: Genetic assessment of the involvement of ethylene suppression...

Jonathan P. Anderson; Ellet Badruzsaufari; Peer M. Schenk; John M. Manners; Olivia J. Desmond; Christina Ehlert; Donald J. Maclean; Paul R. Ebert; Kemal Kazan

2004-11-17T23:59:59.000Z

396

Association Behavior of Biotinylated and Non-Biotinylated PolyEthylene Oxide-b-Poly(2-(Diethylamino)Ethyl Methacrylate)  

E-Print Network [OSTI]

Biotinylated and non-biotinylated copolymers of ethylene oxide (EO) and 2-(diethylamino)ethyl methacrylate (DEAEMA) were synthesized by the atom transfer radical polymerization technique (ATRP). The chemical compositions ...

Tan, J. F.

397

Three-Pulse Photon Echo of Finite Numbers of Molecules: Single-Molecule Traces  

E-Print Network [OSTI]

Three-Pulse Photon Echo of Finite Numbers of Molecules: Single- Molecule Traces Hui Dong and Graham, 6227]. To avoid this drawback of ensemble measurements and evaluate single-molecule behavior, a quantum the fluctuations inherent to single molecules. The current method takes advantage of the coherent state

Fleming, Graham R.

398

2.8 A New Class of Carbon Structures  

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

4 6/1/2011 4 6/1/2011 2.8 A New Class of Carbon Structures Several lines of research-in spectroscopy, astronomy, and metallic clusters-converged in 1985 to lead to the discovery of an unusual molecule. This cluster of 60 carbon atoms was especially stable because of its hollow, icosahedral structure in which the bonds between the atoms resembled the patterns on a soccer ball. The molecule was named Buckminsterfullerene after the geodesic domes designed by architect Buckminster Fuller. The identification of this form of carbon (also called buckyballs) sparked broad interest in the chemistry of an entire class of hollow carbon structures, referred to collectively as fullerenes. Formed when vaporized carbon condenses in an atmosphere of inert gas, fullerenes include a wide range of

399

A Sweet Approach to Carbon Nanospheres - Research Highlight  

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

remarkable chemical reaction remarkable chemical reaction based upon dehydration of aqueous sugar solutions (fructose corn syrup) generates uniform nanospheres of porous carbon in a few hours upon heating in a closed system (125°C, 3 atmospheres pressure). These porous carbon nanospheres can serve as robust substrates for catalysis applications, as electrically conducting phases in fuel cells, for sequestration of contaminants and hostile agents and as an efficiently burning fuel source. OH O H OH O H OH O H O H O H OH Small carbon sphere forms when sugar molecule [C(H 2 O)] 6 loses water Evolving carbon segment of the molecule segregates from solution due to residual -OH on the surface Further dehydration drives consolidation into larger, porous carbon structures SEM micrograph showing 100 nm

400

New route for degradation of chlorinated ethylenes in exhaust gases from ground water remediation  

Science Journals Connector (OSTI)

On the basis of an approximate finite-size description, a UV photoreactor was devised and constructed for studying the photooxidation of the chlorinated ethylenes perchloroethylene (PCE), trichloroethylene (TCE), 1,2-dichloroethylenes (DCE), vinyl chloride (VC) and several saturated chlorinated hydrocarbons (CHC). In the cases of PCE and TCE, the efficiency of the photooxidation using irradiation by a 222nm excimer lamp and subsequent photolysis for the initiation of the process was found to be sufficiently high so that a scaling up to an industrial purification plant of exhaust gases from ground water remediation can be hopefully envisaged. Thanks to consecutive reactions with the chain-sustaining chlorine atoms, this degradation route proves capable of decomposing the other chlorinated ethylenes which are not amenable to photolysis in a direct way. For saturated CHC the utilisability of this approach is limited.

Lutz Prager; Eberhard Hartmann

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

A model for hot tack behavior in ethylene acid copolymer films  

SciTech Connect (OSTI)

A model has been developed for hot tack behavior in ethylene methacrylic acid and ethylene acrylic acid copolymers based on statistical regression of data. This model shows trends and provides insights on the factors that influence hot tack strength. A correlation of eight independent variables with hot tack strength showed that the two factors with the greatest impact on hot tack strength are seal temperature and acid content of the film. The melt indices, melt point temperatures, and synthesis temperatures of the film resin had insignificant correlations with hot tack. No significant difference in hot tack strength was found between acrylic and methacrylic acid copolymers. This model provides a better understanding of an important phenomenon in packaging applications, and it can be used to approximate hot tack behavior in acid copolymers when certain variables are specified.

Shekhar, A. (E.I. DuPont De Nemours Co., Orange, TX (United States))

1994-01-01T23:59:59.000Z

402

Effect of under-inhibition with methanol and ethylene glycol on the hydrate control process  

SciTech Connect (OSTI)

Hydrate control can be achieved by chemical injection. Currently, methanol and ethylene glycol are the most widely used inhibitors in offshore hydrate control operations. To achieve effective hydrate inhibition, a sufficient amount of inhibitor must be injected to shift the thermodynamic equilibrium condition for hydrate formation outside the pipeline operating pressure and temperature. Recently published field experiments showed that hydrate blockages form more readily in under-inhibited systems than in systems completely without inhibitor. A laboratory study is conducted to determine the effect of low concentration (1--5wt%) methanol and ethylene glycol on the hydrate formation process. The results show that, although these chemicals are effective hydrate inhibitors when added in sufficient quantities, they actually enhance the rate of hydrate formation when added at low concentrations to the water. Furthermore, the presence of these chemicals seems to affect the size of the forming hydrate particles.

Yousif, M.H.

1996-12-31T23:59:59.000Z

403

Delayed carbon sequestration and rising carbon prices  

Science Journals Connector (OSTI)

We set out a dynamic model to investigate optimal time paths of emissions, carbon stocks and carbon sequestration by land conversion, allowing for non-instantaneous carbon sequestration. Previous research in a dy...

Alejandro Caparrs

2009-10-01T23:59:59.000Z

404

Single-Molecule Flourescence/Patch Clamp Microscope | EMSL  

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

Single-Molecule FlourescencePatch Clamp Microscope Single-Molecule FlourescencePatch Clamp Microscope At EMSL, researchers use the single-molecule fluorescencepatch clamp...

405

Single Molecule Spectroscopy for Studying Conformational Dynamics of Short Oligonucleotides  

E-Print Network [OSTI]

to the activity of a single molecule. Over the past twentyallow researchers to use single molecule approaches to forLaser Excitation of Single Molecules. Accounts of Chemical

Lin, Ron Reuven

2012-01-01T23:59:59.000Z

406

Single molecule studies of DNA packaging by bacteriophages  

E-Print Network [OSTI]

for the study of single molecule protein- DNA interactions.Physics Studies in Single Molecule Biophysics ProfessorOF THE DISSERTATION Single Molecule Studies of DNA Packaging

Fuller, Derek Nathan

2008-01-01T23:59:59.000Z

407

Methods for parallel amplification of single DNA molecules  

E-Print Network [OSTI]

2006)BEAMing:single? moleculePCRonmicroparticlesinMutation detectionandsingle?moleculecountingusingAmplificationofDNASingleMoleculesbyLinearRolling

McElfish, Erin Marie

2009-01-01T23:59:59.000Z

408

Intermittent Single-Molecule Interfacial Electron Transfer Dynamics...  

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

Intermittent Single-Molecule Interfacial Electron Transfer Dynamics. Intermittent Single-Molecule Interfacial Electron Transfer Dynamics. Abstract: We report on single molecule...

409

Artificial molecules that switch "handedness" at light-speed  

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

molecules that switch "handedness" Artificial molecules that switch "handedness" at light-speed Researchers create the first artificial molecules whose chirality can be...

410

Modification of Resin-Type Adsorbents for Ethane/Ethylene Separation  

Science Journals Connector (OSTI)

Modification of Resin-Type Adsorbents for Ethane/Ethylene Separation ... On Ag+-exchanged Amberlyst 35 (36.5% exchange) at 25 C and 1 atm, the equilibrium adsorbed amount for C2H4 is 1.48 mmol/g, and the equilibrium adsorption ratio for C2H4/C2H6 is 6.4. ... The complexation agents can be classified into three forms:? solution, solid adsorbent, and membrane. ...

Zhongbiao Wu; Sang-Sup Han; Soon-Haeng Cho; Jong-Nam Kim; Kuck-Tack Chue; Ralph T. Yang

1997-07-02T23:59:59.000Z

411

Dissection of defense responses of skl, an ethylene insensitive mutant of Medicago truncatula  

E-Print Network [OSTI]

the ethylene signal. To complement the study, expression analyses of defense response genes in this interaction were studied by real time RTPCR of Phytophthora-infected and mock- infected roots. The genes analyzed were PAL, CHS, IFR, ACC oxidase, GST...........................................................112 22 In silica analysis of PAL gene expression........................................................114 23 In silica analysis of CHS gene expression .......................................................117 24 In silica analysis of IFR...

Pedro, Uribe Mejia

2004-11-15T23:59:59.000Z

412

Copper(I) and copper(II) complexes of an ethylene cross-bridged cyclam  

E-Print Network [OSTI]

Copper(I) and copper(II) complexes of an ethylene cross-bridged cyclam Timothy J. Hubin,a Nathaniel and crystal structures of (4,11-dibenzyl- 1,4,8,11-tetraazabicyclo[6.6.2]hexadecane- 4 N)copper(I) hexa)- copper(II) bis(hexa¯uorophosphate), [Cu(C2H3N)(C26H38- N4)](PF6)2, are described. The CuI ion

Hubin, Tim

413

Ethylene is not involved in adaptive responses to flooding in the Amazonian wild rice species Oryza grandiglumis  

Science Journals Connector (OSTI)

Abstract The Amazonian wild rice Oryza grandiglumis has two contrasting adaptation mechanisms to flooding submergence: a quiescence response to complete submergence at the seedling stage and an escape response based on internodal elongation to partial submergence at the mature stage. We investigated possible factors that trigger these responses. In stem segments excised from mature O. grandiglumis plants, complete submergence only slightly promoted internodal elongation with increased ethylene levels in the internodes, while partial submergence substantially promoted internodal elongation without increased ethylene levels in the internodes. Incubation of non-submerged stem segments under a continuous flow of humidified ethylene-free air promoted internodal elongation to the same extent as that observed for partially submerged segments. Applied ethylene had little effect on the internodal elongation of non-submerged segments irrespective of humidity conditions. These results indicate that the enhanced internodal elongation of submerged O. grandiglumis plants is not triggered by ethylene accumulated during submergence but by the moist surroundings provided by submergence. The growth of shoots in O. grandiglumis seedlings was not promoted by ethylene or complete submergence, as is the case in O. sativa cultivars possessing the submergence-tolerant gene SUB1A. However, because the genome of O. grandiglumis lacks the SUB1A gene, the quiescence response of O. grandiglumis seedlings to complete submergence may be regulated by a mechanism distinct from that involved in the response of submergence-tolerant O. sativa cultivars.

Takuma Okishio; Daisuke Sasayama; Tatsuya Hirano; Masahiro Akimoto; Kazuyuki Itoh; Tetsushi Azuma

2015-01-01T23:59:59.000Z

414

Effect of Vinylene Carbonate on Graphite Anode Cycling Efficiency  

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

Effect of Vinylene Carbonate on Graphite Anode Cycling Efficiency Effect of Vinylene Carbonate on Graphite Anode Cycling Efficiency Title Effect of Vinylene Carbonate on Graphite Anode Cycling Efficiency Publication Type Journal Article Year of Publication 2009 Authors Ridgway, Paul L., Honghe Zheng, Xiangyun Song, Gao Liu, Philip N. Ross, and Vincent S. Battaglia Journal Electrochemical Society Volume 19 Start Page 51 Issue 25 Pagination 51-57 Abstract Vinylene Carbonate (VC) was added to the electrolyte in graphite-lithium half-cells. We report its effect on the coulombic efficiency (as capacity shift) of graphite electrodes under various formation cycling conditions. Cyclic voltammetry on glassy carbon showed that VC passivates the electrode against electrolyte reduction. The dQ/dV plots of the first lithiation of the graphite suggest that VC alters the SEI layer, and that by varying the cell formation rate, the initial ratio of ethylene carbonate to VC in the SEI layer can be controlled. VC was found to decrease first cycle efficiency and reversible capacity (in ongoing cycling) when used to excess. However, experiments with VC additive used with various formation rates did not show any decrease in capacity shift.

415

Flame propagation and counterflow nonpremixed ignition of mixtures of methane and ethylene  

SciTech Connect (OSTI)

The ignition temperature of nitrogen-diluted mixtures of methane and ethylene counterflowing against heated air was measured up to five atmospheres. In addition, the stretch-corrected laminar flame speeds of mixtures of air, methane and ethylene were determined from outwardly-propagating spherical flames up to 10 atmospheres, for extensive range of the lean-to-rich equivalence ratio. These experimental data, relevant to low- to moderately-high-temperature ignition chemistry and high-temperature flame chemistry, respectively, were subsequently compared with calculations using two detailed kinetic mechanisms. A chemical explosive mode analysis (CEMA) was then conducted to identify the dominant ignition chemistry and the role of ethylene addition in facilitating nonpremixed ignition. Furthermore, the hierarchical structure of the associated oxidation kinetics was examined by comparing the sizes and constituents of the skeletal mechanisms of the pure fuels and their mixtures, derived using the method of directed relation graph (DRG). The skeletal mechanism was further reduced by time-scale analysis, leading to a 24-species reduced mechanism from the detailed mechanism of USC Mech II, validated within the parameter space of the conducted experiments. (author)

Liu, W.; Kelley, A.P.; Law, C.K. [Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544 (United States)

2010-05-15T23:59:59.000Z

416

Acrylic acid polymerization and its graft copolymerization to poly(ethylene oxide) by gamma rays  

SciTech Connect (OSTI)

Free radical initiated polymerization of acrylic acid was investigated in methanol-water solutions with and without poly(ethylene oxide) (PEO). The formation of poly(acrylic acid) (PAA) initiated both by gamma irradiation and water soluble azo initiators was found to follow classical free radical kinetics. A significant increase in the rate of the propagation step (together with the degree of polymerization) was observed as the water fraction of the medium increased. During homogeneous polymerization of acrylic acid in methanol-water solutions containing poly(ethylene oxide), PAA grafting efficiency was found to be 67% and independent of initiation rate and yield. A mechanism of grafting to poly(ethylene oxide) was proposed. Chain transfer to PEO (K/sub tr/ = 6.5 x 10/sup -5/) was found to be the dominant mechanism for graft formation. Drag reduction characteristics of these PEO-PAA graft copolymers were measured in dilute aqueous solutions as a function of Reynolds number and solution pH. PEO graft copolymers containing 45% by mole PAA graft had, in neutral and basic solutions, drag reduction characteristics equivalent on a mass basis to the initial PEO. However at low pH, drag reduction characteristics disappeared as the PEO-PAA coacervate formed.

Hochberg, A.

1984-01-01T23:59:59.000Z

417

Multiscale Modeling with Carbon Nanotubes  

SciTech Connect (OSTI)

Technologically important nanomaterials come in all shapes and sizes. They can range from small molecules to complex composites and mixtures. Depending upon the spatial dimensions of the system and properties under investigation computer modeling of such materials can range from equilibrium and nonequilibrium Quantum Mechanics, to force-field-based Molecular Mechanics and kinetic Monte Carlo, to Mesoscale simulation of evolving morphology, to Finite-Element computation of physical properties. This brief review illustrates some of the above modeling techniques through a number of recent applications with carbon nanotubes: nano electromechanical sensors (NEMS), chemical sensors, metal-nanotube contacts, and polymer-nanotube composites.

Maiti, A

2006-02-21T23:59:59.000Z

418

Carbon Additionality: Discussion Paper  

E-Print Network [OSTI]

ahead, and identifying the carbon pools and other green house gas emissions sources and savings coveredCarbon Additionality: A review Discussion Paper Gregory Valatin November 2009 Forest Research. Voluntary Carbon Standards American Carbon Registry Forest Carbon Project Standard (ACRFCPS) 27 Carbon

419

Carbon nanostructures-elixir or poison?  

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

Carbon nanostructures-elixir or poison? Carbon nanostructures-elixir or poison? Carbon nanostructures-elixir or poison? A LANL toxicologist and a team of researchers have documented potential cellular damage from "fullerenes"-soccer-ball-shaped, cage-like molecules composed of 60 carbon atoms. March 31, 2010 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

420

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 packingin the solid-stateto 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

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Carbon Sequestration  

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

Technology Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236-0940 412-386-4966 jose.figueroa@netl.doe.gov Kevin o'Brien Principal Investigator SRI International Materials Research Laboratory 333 Ravenswood Avenue Menlo Park, AK 94025 650-859-3528 kevin.obrien@sri.com Fabrication and Scale-Up oF polybenzimidazole - baSed membrane SyStem For pre - combUStion captUre oF carbon dioxide Background In order to effectively sequester carbon dioxide (CO 2 ) from a gasification plant, there must be an economically viable method for removing the CO 2 from other gases. While CO 2 separation technologies currently exist, their effectiveness is limited. Amine-based separation technologies work only at low temperatures, while pressure-swing absorption and cryogenic distillation consume significantly

422

Carbon Sequestration  

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

andrea Mcnemar andrea Mcnemar National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507-0880 304-285-2024 andrea.mcnemar@netl.doe.gov Gregory J. Elbring Principal Investigator Sandia National Laboratory P.O. Box 5800 Albuquerque, NM 87185 505-844-4904 gjelbri@sandia.gov GeoloGic SequeStration of carbon DioxiDe in a DepleteD oil reServoir: a comprehenSive moDelinG anD Site monitorinG project Background The use of carbon dioxide (CO 2 ) to enhance oil recovery (EOR) is a familiar and frequently used technique in the United States. The oil and gas industry has significant experience with well drilling and injecting CO 2 into oil-bearing formations to enhance production. While using similar techniques as in oil production, this sequestration field

423

Probing Single-Molecule Protein Conformational Dynamics. | EMSL  

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

Single-Molecule Protein Conformational Dynamics. Probing Single-Molecule Protein Conformational Dynamics. Abstract: Protein conformational fluctuations and dynamics, often...

424

Clay Nanoparticle-Supported Single-Molecule FluorescenceSpectroelectr...  

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

Clay Nanoparticle-Supported Single-Molecule Fluorescence Spectroelectrochemistry. Clay Nanoparticle-Supported Single-Molecule Fluorescence Spectroelectrochemistry. Abstract: We...

425

Slowing molecules by optical microlinear deceleration  

SciTech Connect (OSTI)

We study the creation of stationary cold molecules by rapid deceleration of supersonically cooled molecules in a high-intensity pulsed optical lattice. Using the heavy molecule I{sub 2} as an example we predict the evolution of the velocity distribution function of the ensemble during the deceleration period, and show that stationary cold molecules with temperatures below 1 K and densities of approximately 10{sup 12} cm{sup -3} can be produced over length scales of hundreds of micrometers on submicrosecond time scales.

Barker, P.F.; Shneider, M.N. [Department of Physics, Heriot-Watt University, Edinburgh, EH14 4AS, Scotland (United Kingdom); Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey, 08544 (United States)

2002-12-01T23:59:59.000Z

426

Intramolecular Processes in Isolated Polyatomic Molecules  

Science Journals Connector (OSTI)

This paper deals with certain rather well known unimolecular processes which occur in isolated polyatomic molecules. These processes are (i) chemical reactions, forming fragments with identifiable internal and...

Martin R. Levy; Anita M. Renlund

1983-01-01T23:59:59.000Z

427

Statistics of Single-Molecule Detection  

Science Journals Connector (OSTI)

Statistics of Single-Molecule Detection ... K(ti+1,ti,r?i+1,r?i) is the probability that no photon is detected and no photobleaching happens between ti and ti+1, if the molecule was at position r?i at time ti and at position r?i+1 at time ti+1 and ?tVf(r?) and ?tVbl(r?) are the probabilities to detect a photon and to photobleach the molecule within time ?t, respectively, if the molecule is at position r?. ... fluorescence without statistical anal. ...

Jrg Enderlein; David L. Robbins; W. Patrick Ambrose; Peter M. Goodwin; Richard A. Keller

1997-05-01T23:59:59.000Z

428

Covalent Bonding in Actinide Sandwich Molecules  

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

Covalent Bonding in Actinide Sandwich Molecules Print Glenn Seaborg was one of the first scientists to recognize that differences in the degree of covalent bonding in lanthanide...

429

High Throughput Single Molecule Investigation of Transcription.  

E-Print Network [OSTI]

??RNA Polymerase (RNAP) is a crucial protein molecule that decodes the information stored in DNA as base pair sequences, through a process called transcription. The (more)

Kim, Soohong

2012-01-01T23:59:59.000Z

430

Carbon Trading, Carbon Taxes and Social Discounting  

E-Print Network [OSTI]

Carbon Trading, Carbon Taxes and Social Discounting Elisa Belfiori belf0018@umn.edu University of Minnesota Abstract This paper considers the optimal design of policies to carbon emissions in an economy, such as price or quantity controls on the net emissions of carbon, are insufficient to achieve the social

Weiblen, George D

431

Low-Energy Selective Capture of Carbon Dioxide by a Pre-designed...  

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

Low-Energy Selective Capture of Carbon Dioxide by a Pre-designed Elastic Single-Molecule Trap Previous Next List Mario Wriedt, Julian P. Sculley, Andrey A. Yakovenko, Yuguang Ma,...

432

NMR studies of oriented molecules  

SciTech Connect (OSTI)

Deuterium and proton magnetic resonance are used in experiments on a number of compounds which either form liquid crystal mesophases themselves or are dissolved in a liquid crystal solvent. Proton multiple quantum NMR is used to simplify complicated spectra. The theory of nonselective multiple quantum NMR is briefly reviewed. Benzene dissolved in a liquid crystal are used to demonstrate several outcomes of the theory. Experimental studies include proton and deuterium single quantum (..delta..M = +-1) and proton multiple quantum spectra of several molecules which contain the biphenyl moiety. 4-Cyano-4'-n-pentyl-d/sub 11/-biphenyl (5CB-d/sub 11/) is studied as a pure compound in the nematic phase. The obtained chain order parameters and dipolar couplings agree closely with previous results. Models for the effective symmetry of the biphenyl group in 5CB-d/sub 11/ are tested against the experimental spectra. The dihedral angle, defined by the planes containing the rings of the biphenyl group, is found to be 30 +- 2/sup 0/ for 5DB-d/sub 11/. Experiments are also described for 4,4'-d/sub 2/-biphenyl, 4,4' - dibromo-biphenyl, and unsubstituted biphenyl.

Sinton, S.W.

1981-11-01T23:59:59.000Z

433

Single-Molecule Stochastic Resonance  

Science Journals Connector (OSTI)

Stochastic resonance (SR) is a well-known phenomenon in dynamical systems. It consists of the amplification and optimization of the response of a system assisted by stochastic (random or probabilistic) noise. Here we carry out the first experimental study of SR in single DNA hairpins which exhibit cooperatively transitions from folded to unfolded configurations under the action of an oscillating mechanical force applied with optical tweezers. By varying the frequency of the force oscillation, we investigate the folding and unfolding kinetics of DNA hairpins in a periodically driven bistable free-energy potential. We measure several SR quantifiers under varied conditions of the experimental setup such as trap stiffness and length of the molecular handles used for single-molecule manipulation. We find that a good quantifier of the SR is the signal-to-noise ratio (SNR) of the spectral density of measured fluctuations in molecular extension of the DNA hairpins. The frequency dependence of the SNR exhibits a peak at a frequency value given by the resonance-matching condition. Finally, we carry out experiments on short hairpins that show how SR might be useful for enhancing the detection of conformational molecular transitions of low SNR.

K. Hayashi; S. de Lorenzo; M. Manosas; J. M. Huguet; F. Ritort

2012-08-24T23:59:59.000Z

434

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

Science Journals Connector (OSTI)

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

N. K. Kondrasheva

2013-09-01T23:59:59.000Z

435

Assimilation and respiration of radioactive ethylene glycol, in the presence of high sodium chloride concentrations, by a sodium chloride requiring bacterium  

E-Print Network [OSTI]

containing 2 gm ethylene glycol and salts in 250 ml of distilled H20 which was started with a small inoculum of 2 ml suspension (11. 8 mg dry wt) removed 1. 96 gm glycol in 136 hr. Use of a nitrogen-limited medium allowed most of the ethylene glycol... growth on ethylene glycol or propylene glycol favored oxidation of ethylene glycol over glucose while prior growth on glucose favored oxidation of glucose over the iv glycols. Age of the culture had no dramatic effect on the rate of respiration...

Gonzalez, Carlos Francisco

2012-06-07T23:59:59.000Z

436

Copolymer SAFT modeling of phase behavior in hydrocarbon-chain solutions: Alkane oligomers, polyethylene, poly(ethylene-co-olefin-1), polystyrene, and poly(ethylene-co-styrene)  

SciTech Connect (OSTI)

The copolymer SAFT equation of state is found to represent phase transitions in the normal-alkane and methyl-alkane solutions in methane, ethane, propane, and n-hexane, the polyethylene and poly(ethylene-co-olefin-1) solutions in propane, and the polystyrene solutions in n-butane. The pure-solute parameters are all estimated on the basis of the molecular weight and structure only, and the one temperature-independent and system-independent (within each class of solutes) binary parameter is set equal to a constant. The segment energy of the methyl branches is found to be around 160 K, which is lower than the corresponding backbone energy, while the segment energy of the benzene branches is found to be around 222 K for polystyrene, which is higher than the corresponding backbone energy. The alkyl branches are found to promote the polymer miscibility while the benzene branches are found to inhibit the polymer miscibility in propane.

Pan, C.; Radosz, M. [Louisiana State Univ., Baton Rouge, LA (United States)] [Louisiana State Univ., Baton Rouge, LA (United States)

1998-08-01T23:59:59.000Z

437

Miscibility of blends of poly(methyl methacrylate) and oligodiols based on a bisphenol A nucleus and ethylene oxide or propylene oxide branches  

E-Print Network [OSTI]

Cloud-point curves of blends of poly(methyl methacrylate) (PMMA) with a series of oligodiols based on a bisphenol A nucleus and short branches of poly(ethylene oxide) or poly(propylene oxide) (BPA-EO or BPA-PO), and with PEO and PPO oligomers, were obtained using a light transmission device. Experimental results were fitted with the Flory- Huggins model using an interaction parameter depending on both temperature and composition. For PMMA/PEO and PMMA/PPO blends, the miscibility increased when increasing the size of the diol, due to the significant decrease in the entropic and enthalpic terms contributing to the interaction parameter. This reflected the decrease in the selfassociation of solvent molecules and in the contribution of terminal OH groups to the mismatching of solubility parameters. For PMMA/BPA-EO blends, a decrease of the entropic contribution to the interaction parameter when increasing the size of the oligodiol was also found. However, the effect was counterbalanced by the opposite contribution of combinatorial terms leading to cloud-point curves located in approximately the same temperature range. For PMMA/BPA-PO blends, the interaction parameter exhibited a very low value. In this case, the effect of solvent size was much more important on combinatorial terms than on the interaction parameter, leading to an increase in miscibility when decreasing the oligodiol size. For short BPA-PO oligodiols no phase separation was observed. The entropic contribution of the interaction parameter exhibited an inverse relationship with the size of the oligodiols, independent of the nature of the chains bearing the hydroxyls and the type of OH groups (primary or secondary). This indicates that the degree of self-association of solvent molecules through their OH terminal groups, was mainly determined by their relative sizes.

B. Jaffrennou; E. R. Soule; F. Mechin; J. Borrajo; J. P. Pascault; R. J. J. Williams

2013-11-21T23:59:59.000Z

438

Carbon Nanotubes as Electrodes for Dielectrophoresis of DNA  

E-Print Network [OSTI]

Dielectrophoresis can potentially be used as an efficient trapping tool in the fabrication of molecular devices. For nanoscale objects, however, the Brownian motion poses a challenge. We show that the use of carbon nanotube electrodes makes it possible to apply relatively low trapping voltages and still achieve high enough field gradients for trapping nanoscale objects, e.g., single molecules. We compare the efficiency and other characteristics of dielectrophoresis between carbon nanotube electrodes and lithographically fabricated metallic electrodes, in the case of trapping nanoscale DNA molecules. The results are analyzed using finite element method simulations and reveal information about the frequency dependent polarizability of DNA.

Sampo Tuukkanen; J. Jussi Toppari; Anton Kuzyk; Lasse Hirviniemi; Vesa P. Hytonen; Teemu Ihalainen; Paivi Torma

2006-07-18T23:59:59.000Z

439

Synergistic effect of mixing dimethyl ether with methane, ethane, propane, and ethylene fuels on polycyclic aromatic hydrocarbon and soot formation  

SciTech Connect (OSTI)

Characteristics of polycyclic aromatic hydrocarbon (PAH) and soot formation in counterflow diffusion flames of methane, ethane, propane, and ethylene fuels mixed with dimethyl ether (DME) have been investigated. Planar laser-induced incandescence and fluorescence techniques were employed to measure relative soot volume fractions and PAH concentrations, respectively. Results showed that even though DME is known to be a clean fuel in terms of soot formation, DME mixture with ethylene fuel increases PAH and soot formation significantly as compared to the pure ethylene case, while the mixture of DME with methane, ethane, and propane decreases PAH and soot formation. Numerical calculations adopting a detailed kinetics showed that DME can be decomposed to produce a relatively large number of methyl radicals in the low-temperature region where PAH forms and grows; thus the mixture of DME with ethylene increases CH{sub 3} radicals significantly in the PAH formation region. Considering that the increase in the concentration of O radicals is minimal in the PAH formation region with DME mixture, the enhancement of PAH and soot formation in the mixture flames of DME and ethylene can be explained based on the role of methyl radicals in PAH and soot formation. Methyl radicals can increase the concentration of propargyls, which could enhance incipient benzene ring formation through the propargyl recombination reaction and subsequent PAH growth. Thus, the result substantiates the importance of methyl radicals in PAH and soot formation, especially in the PAH formation region of diffusion flames. (author)

Yoon, S.S. [Corporate Research and Development Division, Hyundai-Kia Motors, Gyeonggi-do 445-706 (Korea); Anh, D.H. [Korea Electric Power Research Institute, Daejeon 305-380 (Korea); Chung, S.H. [School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742 (Korea)

2008-08-15T23:59:59.000Z

440

Electrostatic Properties of Adsorbed Polar Molecules: Opposite Behavior of a Single Molecule and a Molecular  

E-Print Network [OSTI]

Electrostatic Properties of Adsorbed Polar Molecules: Opposite Behavior of a Single Molecule.kronik@weizmann.ac.il Abstract: We compare the electrostatic behavior of a single polar molecule adsorbed on a solid substrate with that of an adsorbed polar monolayer. This is accomplished by comparing first principles calculations obtained within

Shapira, Yoram

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Single-Molecule Solvation-Shell Sensing  

Science Journals Connector (OSTI)

We present a new route to single-molecule sensing via solvation shells surrounding a current-carrying backbone molecule. As an example, we show that the presence of a water solvation shell gates the conductance of a family of oligothiophene-containing molecular wires, and that the longer the oligothiophene, the larger is the effect. For the longest example studied, the molecular conductance is over 2orders of magnitude larger in the presence of a shell comprising just 10 water molecules. A first principles theoretical investigation of electron transport through the molecules, using the nonequilibrium Greens function method, shows that water molecules interact directly with the thiophene rings, significantly shifting transport resonances and greatly increasing the conductance. This reversible effect is confirmed experimentally through conductance measurements performed in the presence of moist air and dry argon.

E. Leary; H. Hbenreich; S. J. Higgins; H. van Zalinge; W. Haiss; R. J. Nichols; C. M. Finch; I. Grace; C. J. Lambert; R. McGrath; J. Smerdon

2009-02-23T23:59:59.000Z

442

Carbon Fiber Consortium | Partnerships | ORNL  

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

Carbon Fiber Consortium SHARE Carbon Fiber Consortium Oak Ridge Carbon Fiber Composites Consortium The Oak Ridge Carbon Fiber Composites Consortium was established in 2011 to...

443

Alloy Catalyst in a Reactive Environment: The Example of Ag-Cu Particles for Ethylene Epoxidation  

Science Journals Connector (OSTI)

Combining first-principles calculations and insitu photoelectron spectroscopy, we show how the composition and structure of the surface of an alloy catalyst is affected by the temperature and pressure of the reagents. The Ag-Cu alloy, recently proposed as an improved catalyst for ethylene epoxidation, forms a thin Cu-O surface oxide, while a Ag-Cu surface alloy is found not to be stable. Several possible surface structures are identified, among which the catalyst surface is likely to dynamically evolve under reaction conditions.

Simone Piccinin; Spiros Zafeiratos; Catherine Stampfl; Thomas W. Hansen; Michael Hvecker; Detre Teschner; Valerii I. Bukhtiyarov; Frank Girgsdies; Axel Knop-Gericke; Robert Schlgl; Matthias Scheffler

2010-01-22T23:59:59.000Z

444

Carbon Sequestration Project Portfolio  

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

Home > Technologies > Carbon Storage > Reference Shelf > Project Portfolio Home > Technologies > Carbon Storage > Reference Shelf > Project Portfolio Carbon Storage 2011 Carbon Storage Project Portfolio Table of Contents CARBON STORAGE OVERVIEW Carbon Storage Program Contacts [PDF-26KB] Carbon Storage Projects National Map [PDF-169KB] State Projects Summary Table [PDF-39KB] Carbon Storage Program Structure [PDF-181KB] Selected Carbon Sequestration Program Papers and Publications The U.S. Department of Energy's R&D Program to Reduce Greenhouse Gas Emissions Through Beneficial Uses of Carbon Dioxide (2011) [PDF-3.3MB] Greenhouse Gas Science and Technology Carbon Capture and Sequestration: The U.S. Department of Energy's R&D Efforts to Characterize Opportunities for Deep Geologic Storage of Carbon Dioxide in Offshore Resources (2011) [PDF-445KB]

445

CALIFORNIA CARBON SEQUESTRATION THROUGH  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION CARBON SEQUESTRATION THROUGH CHANGES IN LAND USE IN WASHINGTON. Carbon Sequestration Through Changes in Land Use in Washington: Costs and Opportunities. California for Terrestrial Carbon Sequestration in Oregon. Report to Winrock International. #12;ii #12;iii Preface

446

High-order harmonic spectroscopy for molecular imaging of polyatomic molecules  

E-Print Network [OSTI]

High-order harmonic generation is a powerful and sensitive tool for probing atomic and molecular structures, combining in the same measurement an unprecedented attosecond temporal resolution with a high spatial resolution, of the order of the angstrom. Imaging of the outermost molecular orbital by high-order harmonic generation has been limited for a long time to very simple molecules, like nitrogen. Recently we demonstrated a technique that overcame several of the issues that have prevented the extension of molecular orbital tomography to more complex species, showing that molecular imaging can be applied to a triatomic molecule like carbon dioxide. Here we report on the application of such technique to nitrous oxide (N2O) and acetylene (C2H2). This result represents a first step towards the imaging of fragile compounds, a category which includes most of the fundamental biological molecules.

Negro, M; Faccial, D; De Silvestri, S; Vozzi, C; Stagira, S

2014-01-01T23:59:59.000Z

447

Life at the Single Molecule Level  

SciTech Connect (OSTI)

In a living cell, gene expressionthe transcription of DNA to messenger RNA followed by translation to proteinoccurs stochastically, as a consequence of the low copy number of DNA and mRNA molecules involved. Can one monitor these processes in a living cell in real time? How do cells with identical genes exhibit different phenotypes? Recent advances in single-molecule imaging in living bacterial cells allow these questions to be answered at the molecular level in a quantitative manner. It was found that rare events of single molecules can have important biological consequences.

Xie, Xiaoliang Sunny (Harvard) [Harvard

2011-03-04T23:59:59.000Z

448

Isoprene is the monomer pre-cursor to the synthetic equivalent of natural rubber. It is recovered from the C5 cut in ethylene  

E-Print Network [OSTI]

. It is recovered from the C5 cut in ethylene plants. The concentration range is 13% to 20% in the crude feed. One ethylene manufacturing. It is not atypical for the crude isoprene to be a collection from a many plants

Howat, Colin S. "Chip"

449

Preparation of frustule-like 1,2-ethylene-silica nanospheres through a chiral amphiphile/organic solvent dual-templating approach  

SciTech Connect (OSTI)

Graphical abstract: Display Omitted Highlights: ? Frustule-like 1,2-ethylene-silicas were prepared through a dual-templating approach. ? The morphologies and pore architectures of the 1,2-ethylene-silicas are tunable. ? Mesoporous 1,2-ethylene-silica nanotubes were also prepared. -- Abstract: Hollow silica nanospheres with mesopores in the walls have been widely studied because of their potential applications in catalysis and drug release. Hollow organosilica nanospheres also attracted much attention because of their tunable wall backbones and wider applications. Herein, frustule-like 1,2-ethylene-silicas were obtained using a chiral amphiphile, CHCl{sub 3}, and a dual-templating approach. The morphologies and pore architectures of the 1,2-ethylene-silicas are tunable by changing the amount of CHCl{sub 3} in the reaction mixture. With the addition of CHCl{sub 3} in the reaction mixtures, hollow 1,2-ethylene-silica nanospheres with opened mesopores in the walls were feasible. Moreover, 1,2-ethylene-silicas with mesopores on the surfaces and coiled pore channels within the walls were obtained using the chiral amphiphile in a single-templating approach. These 1,2-ethylene-silicas were characterized using field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction and N{sub 2} sorptions.

Zhao, Yanwei; Huang, Zhibin; Yan, Zhuojun; Wang, Sibing; Li, Baozong [Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China)] [Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China); Li, Yi, E-mail: liyi@suda.edu.cn [Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China)] [Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China); Yang, Yonggang [Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China)] [Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China)

2013-02-15T23:59:59.000Z

450

Carcinogenicity Study with Technical-Grade Dichlorodiphenyltrichloroethane and 1,1-Dichloro-2,2-bis(p-chlorophenyl)ethylene in Hamsters  

Science Journals Connector (OSTI)

...1-dichloro-2,2-bis(p-chlo- rophenyl)ethylene; p,p'-DDT, 1,1,1-trichloro-2...Welch, R., Oudbier, A., and Price, H. Persistence of pesticides on the...dichloro-2,2bis(p-chlorophenyl)ethylene, to 1,1-dichloro- 2,2-bis...

Lorenzo Rossi; Ottavia Barbieri; Marina Sanguineti; Jos R. P. Cabral; Paolo Bruzzi; and Leonardo Santi

1983-02-01T23:59:59.000Z

451

Localization of the production of 1-aminocyclopropane-1-carboxylic acid and its conversion to ethylene during the rhythmic production of the gas in Sorghum bicolor seedlings  

E-Print Network [OSTI]

and conjugated ACC contents from detached as well as intact plant organs tested the role of roots in rhythmic ethylene synthesis. Variation in ethylene synthesis in the phytochrome B mutant and its wild-type cultivar under different light regimes suggested...

Gohil, Hemantkumar Laxmansinh

2002-01-01T23:59:59.000Z

452

Inner-shell electron spectroscopy and chemical properties of atoms and small molecules  

SciTech Connect (OSTI)

The program has been concerned with gas-phase carbon 1s photoelectron spectroscopy of a number of molecules of potential chemical interest. The primary goals have been to determine carbon 1s ionization energies with a view of relating these to other chemical properties such as electronegativity, acidity, basicity, and reactivity, in order to provide a better understanding of these fundamental properties. The role of electron-donating (methyl) and electron-withdrawing (fluoro) substituents on the carbon 1s ionization energies of substituted benzenes has been studied., and these results have been related to measurements of the reactivities of the same molecule as well as to their affinities for protons (basicity). Opportunities for investigation in unplanned areas have arisen, and the program has been modified to take advantage of these. One has been the realization that, under certain circumstances, inner-shell ionization energies may depend on the molecular conformation. Several examples of this phenomenon have been investigated and it has been shown that this technique provides a tool for the measurement of the energy differences between different conformers of the same substance. The other has been the demonstration that photoelectron recoil can lead to the excitation of vibrational modes that are forbidden in the normal view of photoemission and to rotational heating of the molecule that increases with the energy of the exciting radiation.

T. Darrah Thomas

2009-01-21T23:59:59.000Z

453

Modeling the Phase Equilibria of Poly(ethylene glycol) Binary Mixtures with soft-SAFT EoS  

Science Journals Connector (OSTI)

Modeling the Phase Equilibria of Poly(ethylene glycol) Binary Mixtures with soft-SAFT EoS ... The present work addresses the modeling of the phase equilibria of several poly(ethylene glycol) mixtures, with different types of solvents, by the soft-SAFT (statistical associating fluid theory) equation of state (EoS). ... The parameters for the different solvents were either taken from previous works or fitted for the first time to available vapor?liquid equilibrium data within the soft-SAFT during this work. ...

Nuno Pedrosa; Lourdes F. Vega; Joo A. P. Coutinho; Isabel M. Marrucho

2007-05-26T23:59:59.000Z

454

Method of making carbon-carbon composites  

DOE Patents [OSTI]

A process for making 2D and 3D carbon-carbon composites having a combined high crystallinity, high strength, high modulus and high thermal and electrical conductivity. High-modulus/high-strength mesophase derived carbon fibers are woven into a suitable cloth. Layers of this easily graphitizible woven cloth are infiltrated with carbon material to form green composites. The carbonized composite is then impregnated several times with pitch by covering the composite with hot pitch under pressure. The composites are given a heat treatment between each impregnant step to crack up the infiltrated carbon and allow additional pitch to enter the microstructure during the next impregnation cycle. The impregnated composites are then given a final heat treatment in the range 2500.degree. to 3100.degree. C. to fully graphitize the fibers and the matrix carbon. The composites are then infiltrated with pyrolytic carbon by chemical vapor deposition in the range 1000.degree. C. to 1300.degree. C. at a reduced. pressure.

Engle, Glen B. (16716 Martincoit Rd., Poway, CA 92064)

1993-01-01T23:59:59.000Z

455

Carbon Code Requirements for voluntary carbon sequestration projects  

E-Print Network [OSTI]

Woodland Carbon Code Requirements for voluntary carbon sequestration projects ® Version 1.2 July trademark 10 3. Carbon sequestration 11 3.1 Units of carbon calculation 11 3.2 Carbon baseline 11 3.3 Carbon leakage 12 3.4 Project carbon sequestration 12 3.5 Net carbon sequestration 13 4. Environmental quality 14

456

Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production  

E-Print Network [OSTI]

#12;Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward

Narasayya, Vivek

457

Low Carbon Fuel Standards  

E-Print Network [OSTI]

in 1990. These many alternative-fuel initiatives failed tolow-cost, low-carbon alternative fuels would thrive. Theto introduce low-carbon alternative fuels. Former Federal

Sperling, Dan; Yeh, Sonia

2009-01-01T23:59:59.000Z

458

Carbon Capture (Carbon Cycle 2.0)  

ScienceCinema (OSTI)

Berend Smit speaks at the Carbon Cycle 2.0 kick-off symposium Feb. 3, 2010. We emit more carbon into the atmosphere than natural processes are able to remove - an imbalance with negative consequences. Carbon Cycle 2.0 is a Berkeley Lab initiative to provide the science needed to restore this balance by integrating the Labs diverse research activities and delivering creative solutions toward a carbon-neutral energy future. http://carboncycle2.lbl.gov/

Smit, Berend

2011-06-08T23:59:59.000Z

459

Sisyphus Cooling of Electrically Trapped Polyatomic Molecules  

E-Print Network [OSTI]

The rich internal structure and long-range dipole-dipole interactions establish polar molecules as unique instruments for quantum-controlled applications and fundamental investigations. Their potential fully unfolds at ultracold temperatures, where a plethora of effects is predicted in many-body physics, quantum information science, ultracold chemistry, and physics beyond the standard model. These objectives have inspired the development of a wide range of methods to produce cold molecular ensembles. However, cooling polyatomic molecules to ultracold temperatures has until now seemed intractable. Here we report on the experimental realization of opto-electrical cooling, a paradigm-changing cooling and accumulation method for polar molecules. Its key attribute is the removal of a large fraction of a molecule's kinetic energy in each step of the cooling cycle via a Sisyphus effect, allowing cooling with only few dissipative decay processes. We demonstrate its potential by reducing the temperature of about 10^6 ...

Zeppenfeld, M; Glckner, R; Prehn, A; Mielenz, M; Sommer, C; van Buuren, L D; Motsch, M; Rempe, G

2012-01-01T23:59:59.000Z

460

Photo-Ionization of Molecules near Threshold  

Science Journals Connector (OSTI)

An orthogonalized Coulomb-wave method for the construction of continuum wave functions of molecules is described. Hydrogenic functions of definite angular momentum, which transform according to the irreducible representations of the point group of the molecule, are phenomenologically used as trial functions. Corrections to the trial functions are made by orthogonalizing them to charge rearrangement states of the molecule. The photo-ionization cross section is obtained by summing over the asymptotic angular-momentum quantum number. The method is exemplified by calculation of the photo-ionization cross sections of the ground and first excited states of the anthracene molecule in the range of 1.5 eV above threshold.

John P. Hernandez

1968-03-05T23:59:59.000Z

Note: This page contains sample records for the topic "molecule ethylene carbonate" 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

Magnetic control of a meta-molecule  

Science Journals Connector (OSTI)

Metamaterials offer the prospect of new science and applications. They have been designed by shaping or changing the material of the individual meta-molecules to achieve properties not...

Stenning, Gavin B G; Bowden, Graham J; Maple, Lewis C; Gregory, Simon A; Sposito, Alberto; Eason, Robert W; Zheludev, Nikolay I; de Groot, Peter A J

2013-01-01T23:59:59.000Z

462

Single-molecule kinetics of nanoparticle catalysis  

Science Journals Connector (OSTI)

Owing to their structural dispersion, the catalytic properties of nanoparticles are challenging to characterize in ensemble-averaged measurements. The single-molecule approach enables studying the catalysis of na...

Weilin Xu; Hao Shen; Guokun Liu; Peng Chen

2009-12-01T23:59:59.000Z

463

Single Molecule Probes of Lipid Membrane Structure  

E-Print Network [OSTI]

structural metrics with function in biological membranes. Single-molecule fluorescence studies were used to measure membrane structure at the molecular level. Several groups have shown that polarized total internal reflection fluorescence microscopy (PTIRF...

Livanec, Philip W.

2009-12-14T23:59:59.000Z

464

Single-Molecule Detection with Active Transport.  

E-Print Network [OSTI]

??A glass capillary is used near the focal region of a custom-built confocal microscope to investigate the use of active transport for single-molecule detection in (more)

Ball, David Allan

2006-01-01T23:59:59.000Z

465

Fabrication of carbon nanotube nanogap electrodes by helium ion sputtering for molecular contacts  

SciTech Connect (OSTI)

Carbon nanotube nanogaps have been used to contact individual organic molecules. However, the reliable fabrication of a truly nanometer-sized gap remains a challenge. We use helium ion beam lithography to sputter nanogaps of only (2.8 0.6) nm size into single metallic carbon nanotubes embedded in a device geometry. The high reproducibility of the gap size formation provides a reliable nanogap electrode testbed for contacting small organic molecules. To demonstrate the functionality of these nanogap electrodes, we integrate oligo(phenylene ethynylene) molecular rods, and measure resistance before and after gap formation and with and without contacted molecules.

Thiele, Cornelius, E-mail: Cornelius.Thiele@kit.edu [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany) [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany); DFG Center for Functional Nanostructures (CFN), 76028 Karlsruhe (Germany); Vieker, Henning; Beyer, Andr; Glzhuser, Armin [Faculty of Physics, Bielefeld University, 33615 Bielefeld (Germany)] [Faculty of Physics, Bielefeld University, 33615 Bielefeld (Germany); Flavel, Benjamin S.; Hennrich, Frank [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany)] [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany); Muoz Torres, David; Eaton, Thomas R. [Department of Chemistry, University of Basel, 4056 Basel (Switzerland)] [Department of Chemistry, University of Basel, 4056 Basel (Switzerland); Mayor, Marcel [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany) [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany); DFG Center for Functional Nanostructures (CFN), 76028 Karlsruhe (Germany); Department of Chemistry, University of Basel, 4056 Basel (Switzerland); Kappes, Manfred M. [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany) [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany); DFG Center for Functional Nanostructures (CFN), 76028 Karlsruhe (Germany); Institut fr Physikalische Chemie, Karlsruhe Institute of Technology, 76131 Karlsruhe (Germany); Lhneysen, Hilbert v. [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany) [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany); DFG Center for Functional Nanostructures (CFN), 76028 Karlsruhe (Germany); Physikalisches Institut, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany); Institut fr Festkrperphysik, Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany); and others

2014-03-10T23:59:59.000Z

466

Indistinguishable Photons from a Single Molecule  

E-Print Network [OSTI]

We report the results of coincidence counting experiments at the output of a Michelson interferometer using the zero-phonon-line emission of a single molecule at $1.4 K$. Under continuous wave excitation, we observe the absence of coincidence counts as an indication of two-photon interference. This corresponds to the observation of Hong-Ou-Mandel correlations and proves the suitability of the zero-phonon-line emission of single molecules for applications in linear optics quantum computation.

A. Kiraz; M. Ehrl; Th. Hellerer; O. E. Mustecaplioglu; C. Brauchle; A. Zumbusch

2005-05-05T23:59:59.000Z

467

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

E-Print Network [OSTI]

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

468

Sol-gel method for encapsulating molecules  

DOE Patents [OSTI]

A method for encapsulating organic molecules, and in particular, biomolecules using sol-gel chemistry. A silica sol is prepared from an aqueous alkali metal silicate solution, such as a mixture of silicon dioxide and sodium or potassium oxide in water. The pH is adjusted to a suitably low value to stabilize the sol by minimizing the rate of siloxane condensation, thereby allowing storage stability of the sol prior to gelation. The organic molecules, generally in solution, is then added with the organic molecules being encapsulated in the sol matrix. After aging, either a thin film can be prepared or a gel can be formed with the encapsulated molecules. Depending upon the acid used, pH, and other processing conditions, the gelation time can be from one minute up to several days. In the method of the present invention, no alcohols are generated as by-products during the sol-gel and encapsulation steps. The organic molecules can be added at any desired pH value, where the pH value is generally chosen to achieve the desired reactivity of the organic molecules. The method of the present invention thereby presents a sufficiently mild encapsulation method to retain a significant portion of the activity of the biomolecules, compared with the activity of the biomolecules in free solution.

Brinker, C. Jeffrey (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Bhatia, Rimple (Albuquerque, NM); Singh, Anup K. (San Francisco, CA)

2002-01-01T23:59:59.000Z

469

Microfluidic sieve using intertwined, free-standing carbon nanotube mesh as active medium  

DOE Patents [OSTI]

A microfluidic sieve having a substrate with a microfluidic channel, and a carbon nanotube mesh. The carbon nanotube mesh is formed from a plurality of intertwined free-standing carbon nanotubes which are fixedly attached within the channel for separating, concentrating, and/or filtering molecules flowed through the channel. In one embodiment, the microfluidic sieve is fabricated by providing a substrate having a microfluidic channel, and growing the intertwined free-standing carbon nanotubes from within the channel to produce the carbon nanotube mesh attached within the channel.

Bakajin, Olgica (San Leandro, CA); Noy, Aleksandr (Belmont, CA)

2007-11-06T23:59:59.000Z

470

Covalently Binding the Photosystem I to Carbon Nanotubes  

E-Print Network [OSTI]

We present a chemical route to covalently couple the photosystem I (PS I) to carbon nanotubes (CNTs). Small linker molecules are used to connect the PS I to the CNTs. Hybrid systems, consisting of CNTs and the PS I, promise new photo-induced transport phenomena due to the outstanding optoelectronic properties of the robust cyanobacteria membrane protein PS I.

S. Kaniber; L. Frolov; F. C. Simmel; A. W. Holleitner; C. Carmeli; I. Carmeli

2009-02-25T23:59:59.000Z

471

Tools for Single-Molecule Sequence Detection and Manipulation  

E-Print Network [OSTI]

J. & Smith, D. E. Single-molecule studies of DNA mechanics.polymer physics at the single-molecule level. Phil. Trans.Block, S. High-Resolution, Single-Molecule Measurements of

Zohar, Hagar

2011-01-01T23:59:59.000Z

472

Single Molecule and Synthetic Biology Studies of Transcription  

E-Print Network [OSTI]

R.J. et al. Single-molecule study of transcriptional pausingBustamante, C. Single molecule transcription elongation.RNA polymerase. A single-molecule view of the transcription

Zamft, Bradley Michael

2011-01-01T23:59:59.000Z

473

Single-molecule reactions and spectroscopy via vibrational excitation  

Science Journals Connector (OSTI)

...J. Kelly and R. E. Palmer Single-molecule reactions and spectroscopy via...Inelastic Tunnelling|Vibration|Single Molecule|Scanning Tunnelling Microscopy (Stm)| Single-molecule reactions and spectroscopy via...

2004-01-01T23:59:59.000Z

474

Single-molecule studies of DNA dynamics and intermolecular forces  

E-Print Network [OSTI]

forces imposed on a single molecule in a concentratedOF THE DISSERTATION Single-Molecule Studies of DNA DynamicsRecently developed single-molecule techniques, which allow

Robertson, Rae Marie

2007-01-01T23:59:59.000Z

475

Single-Molecule Lysozyme Dynamics Monitored by an Electronic Circuit  

E-Print Network [OSTI]

Chem. B 38. S. N. Xie, Single Molecules 2, 229 (2001). 39.Technol. 26, 1338 (2010). Single-Molecule Lysozyme Dynamicsprobe the dynamics of single molecules (1) and overcome the

Collins, Philip G

2012-01-01T23:59:59.000Z

476

Biology and polymer physics at the singlemolecule level  

Science Journals Connector (OSTI)

...Olmsted Biology and polymer physics at the single-molecule level Steven Chu Department of Physics...be hidden from view can be clearly seen in single-molecule experiments. single-molecule biology|polymer dynamics|biological physics...

2003-01-01T23:59:59.000Z

477

Single-molecule microscopy study of nano-systems.  

E-Print Network [OSTI]

??In this work, techniques were developed and used to study the properties of molecules on a single-molecule level. Single-molecule techniques have the major advantage, that (more)

Heiss, Gregor

2011-01-01T23:59:59.000Z

478

Acetylenic carbon allotrope  

DOE Patents [OSTI]

A fourth allotrope of carbon, an acetylenic carbon allotrope, is described. The acetylenic carbon allotropes of the present invention are more soluble than the other known carbon allotropes in many common organic solvents and possesses other desirable characteristics, e.g. high electron density, ability to burn cleanly, and electrical conductive properties. Many uses for this fourth allotrope are described herein. 17 figs.

Lagow, R.J.

1998-02-10T23:59:59.000Z

479

The Woodland Carbon Code  

E-Print Network [OSTI]

The Woodland Carbon Code While society must continue to make every effort to reduce greenhouse gas a role by removing carbon dioxide from the atmosphere. The potential of woodlands to soak up carbon to help compensate for their carbon emissions. But before investing in such projects, people want to know

480

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

E-Print Network [OSTI]

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

Note: This page contains sample records for the topic "molecule ethylene carbonate" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


481

Soot formation in aerodynamically strained methane-air and ethylene-air diffusion flames with chloromethane addition  

SciTech Connect (OSTI)

The effects of chloromethane (CH{sub 3}Cl) addition on soot inception in methane-air and ethylene-air counterflow diffusion flames were investigated by varying the concentrations of chloromethane and nitrogen in the fuel stream. Experiments showed a monotonic increase in the critical sooting stretch rate for methane-air flames when methane was replaced by chloromethane, while ethylene and chloromethane flames exhibited a larger sooting tendency than flames under comparable conditions and burning either ethylene or chloromethane alone. For the conditions investigated, the critical sooting stretch rates of methane-chloromethane-nitrogen flames were shown to be primarily a function of the chloromethane loading in the fuel stream. The structure of these flames was modeled using detailed chemistry and transport. Modeling results suggested that the enhancement of soot formation in ethylene-chloromethane flames may be a combined result of increased concentrations of C{sub 2} species and chlorinated C{sub 1} radicals (CH{sub 2}Cl and CHCl). A large rate of the reactions among these species may be the first steps in the molecular growth processes, which leads to the inception of soot particles. (author)

Leylegian, J.C. [ATK GASL NY Operations, 77 Raynor Avenue, Ronkonkoma, NY 11779-6648 (United States)

2008-01-15T23:59:59.000Z

482

The reaction dynamics of alkali dimer molecules and electronically excited alkali atoms with simple molecules  

SciTech Connect (OSTI)

This dissertation presents the results from the crossed molecular beam studies on the dynamics of bimolecular collisions in the gas phase. The primary subjects include the interactions of alkali dimer molecules with simple molecules, and the inelastic scattering of electronically excited alkali atoms with O{sub 2}. The reaction of the sodium dimers with oxygen molecules is described in Chapter 2. Two reaction pathways were observed for this four-center molecule-molecule reaction, i.e. the formations of NaO{sub 2} + Na and NaO + NaO. NaO{sub 2} products exhibit a very anisotropic angular distribution, indicating a direct spectator stripping mechanism for this reaction channel. The NaO formation follows the bond breaking of O{sub 2}, which is likely a result of a charge transfer from Na{sub 2} to the excited state orbital of O{sub 2}{sup {minus}}. The scattering of sodium dimers from ammonium and methanol produced novel molecules, NaNH{sub 3} and Na(CH{sub 3}OH), respectively. These experimental observations, as well as the discussions on the reaction dynamics and the chemical bonding within these molecules, will be presented in Chapter 3. The lower limits for the bond dissociation energies of these molecules are also obtained. Finally, Chapter 4 describes the energy transfer between oxygen molecules and electronically excited sodium atoms.

Hou, H. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry]|[Lawrence Berkeley National Lab., CA (United States). Chemical Sciences Div.

1995-12-01T23:59:59.000Z

483

Single Molecule Detection and Bead Trapping in Microstructures for Molecule Selection and DNA Degradation  

Science Journals Connector (OSTI)

Single diffusing, as well as fast flowing (10 mm/s), tetramethylrhodamine labeled molecules (TMR-4-dUTP) were detected in...

Michael Gsch; Zeno Fldes-Papp; Hans Blom; Johan Holm

2000-01-01T23:59:59.000Z

484

Mesoporous carbon materials  

DOE Patents [OSTI]

A conductive mesoporous carbon composite comprising conductive carbon nanoparticles contained within a mesoporous carbon matrix, wherein the conductive mesoporous carbon composite possesses at least a portion of mesopores having a pore size of at least 10 nm and up to 50 nm, and wherein the mesopores are either within the mesoporous carbon matrix, or are spacings delineated by surfaces of said conductive carbon nanoparticles when said conductive carbon nanoparticles are fused with each other, or both. Methods for producing the above-described composite, devices incorporating them (e.g., lithium batteries), and methods of using them, are also described.

Dai, Sheng; Fulvio, Pasquale Fernando; Mayes, Richard T.; Wang, Xiqing; Sun, Xiao-Guang; Guo, Bingkun

2014-09-09T23:59:59.000Z

485

Single-Molecule Dynamics Reveals Cooperative Binding-Folding...  

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

Molecule Dynamics Reveals Cooperative Binding-Folding in Protein Recognition . Single-Molecule Dynamics Reveals Cooperative Binding-Folding in Protein Recognition . Abstract: The...

486

Single-molecule imaging studies of protein dynamics.  

E-Print Network [OSTI]

??Single-molecule fluorescence imaging is a powerful method for studying biological events. The work of this thesis primarily focuses on single molecule studies of the dynamics (more)

Zareh, Shannon Kian

2011-01-01T23:59:59.000Z

487

Electronic transport and correlations in single magnetic molecule devices.  

E-Print Network [OSTI]

??In this dissertation, we study the most important microscopic aspects that grant molecules such as Single Molecule Magnets (SMMs) their preferential spin direction. We do (more)

Romero, Javier

2014-01-01T23:59:59.000Z

488

Reaction studies of hot silicon, germanium and carbon atoms  

SciTech Connect (OSTI)

The goal of this project was to increase the authors understanding of the interplay between the kinetic and electronic energy of free atoms and their chemical reactivity by answering the following questions: (1) what is the chemistry of high-energy carbon silicon and germanium atoms recoiling from nuclear transformations; (2) how do the reactions of recoiling carbon, silicon and germanium atoms take place - what are the operative reaction mechanisms; (3) how does the reactivity of free carbon, silicon and germanium atoms vary with energy and electronic state, and what are the differences in the chemistry of these three isoelectronic atoms This research program consisted of a coordinated set of experiments capable of achieving these goals by defining the structures, the kinetic and internal energy, and the charge states of the intermediates formed in the gas-phase reactions of recoiling silicon and germanium atoms with silane, germane, and unsaturated organic molecules, and of recoiling carbon atoms with aromatic molecules. The reactions of high energy silicon, germanium, and carbon atoms created by nuclear recoil were studied with substrates chosen so that their products illuminated the mechanism of the recoil reactions. Information about the energy and electronic state of the recoiling atoms at reaction was obtained from the variation in end product yields and the extent of decomposition and rearrangement of primary products (usually reactive intermediates) as a function of total pressure and the concentration of inert moderator molecules that remove kinetic energy from the recoiling atoms and can induce transitions between electronic spin states. 29 refs.

Gaspar, P.P.

1990-11-01T23:59:59.000Z

489

Ultrafast Nonlinear Spectroscopy of Semiconducting Carbon Nanotubes  

E-Print Network [OSTI]

metallic nanotubes . . . . . . . . . . . . . . . . . Carbon2 Carbon Nanotubes Physical and ElectronicStructure of Carbon Nanotubes . . . . . . . . . .

Graham, Matthew Werden

2010-01-01T23:59:59.000Z

490

Ultrafast Nonlinear Spectroscopy of Semiconducting Carbon Nanotubes  

E-Print Network [OSTI]

2 Carbon Nanotubes Physical andElectronic Structure of Carbon Nanotubes . . . . . . . . . .Photophysics in Semiconducting Carbon Nanotubes . . . . .

Graham, Matthew Werden

2010-01-01T23:59:59.000Z

491

Catalytic conversion of cellulosic biomass to ethylene glycol: Effects of inorganic impurities in biomass  

Science Journals Connector (OSTI)

Abstract The effects of typical inorganic impurities on the catalytic conversion of cellulose to ethylene glycol (EG) were investigated, and the mechanism of catalyst deactivation by certain impurities were clarified. It was found that most impurities did not affect the EG yield, but some non-neutral impurities or Ca and Fe ions greatly decreased the EG yield. Conditional experiments and catalyst characterization showed that some impurities changed the pH of the reaction solution and affected the cellulose hydrolysis rate; Ca and Fe cations reacted with tungstate ions and suppressed the retro-aldol condensation. To obtain a high EG yield, the pH of the reaction solution and the concentration of tungstate ions should be respectively adjusted to 5.06.0 and higher than 187ppm. For raw biomass conversion, negative effects were eliminated by suitable pretreatments, and high EG yields comparable to those from pure cellulose were obtained.

Jifeng Pang; Mingyuan Zheng; Ruiyan Sun; Lei Song; Aiqin Wang; Xiaodong Wang; Tao Zhang

2015-01-01T23:59:59.000Z

492

Plants having modified response to ethylene by transformation with an ETR nucleic acid  

DOE Patents [OSTI]

The invention includes transformed plants having at least one cell transformed with a modified ETR nucleic acid. Such plants have a phenotype characterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tissue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype.

Meyerowitz, Elliott M. (Pasadena, CA); Chang, Caren (Pasadena, CA); Bleecker, Anthony B. (Madison, WI)

2001-01-01T23:59:59.000Z

493

Synthesis of terminal alkenes from internal alkenes and ethylene via olefin metathesis  

DOE Patents [OSTI]

This invention relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by a selected olefin metathesis catalyst. In one embodiment of the invention, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting an olefinic substrate comprised of at least one internal olefin with ethylene, in the presence of a metathesis catalyst, wherein the catalyst is present in an amount that is less than about 1000 ppm relative to the olefinic substrate, and wherein the metathesis catalyst has the structure of formula (II) ##STR00001## wherein the various substituents are as defined herein. The invention has utility, for example, in the fields of catalysis, organic synthesis, and industrial chemistry.

Schrodi, Yann (Agoura Hills, CA)

2011-11-29T23:59:59.000Z

494

Biomimetic Dye Molecules for Solar Cells  

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

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

495

Biomimetic Dye Molecules for Solar Cells  

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

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

496

Biomimetic Dye Molecules for Solar Cells  

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

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

497

Biomimetic Dye Molecules for Solar Cells  

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

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

498

Biomimetic Dye Molecules for Solar Cells  

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

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

499

Biomimetic Dye Molecules for Solar Cells  

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

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

500

Allosteric Modulation of DNA by Small Molecules  

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

Allosteric Modulation of DNA by Small Allosteric Modulation of DNA by Small Molecules Signals originating at the cell surface are conveyed by a complex system of interconnected signaling pathways to the nucleus. They converge at transcription factors, which in turn regulate the transcription of sets of genes that result in the gene expression. Many human diseases are caused by dysregulated gene expression and the oversupply of transcription factors may be required for the growth and metastatic behavior of human cancers. Cell permeable small molecules that can be programmed to disrupt transcription factor-DNA interfaces could silence aberrant gene expression pathways. Pyrrole-imidazole polyamides are DNA minor groove binding small molecules that are programmable for a large repertoire of DNA motifs.