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


1

Carrier Multiplication in Nanocrystal Quantum Dots and Solar Energy Conversion  

Science Journals Connector (OSTI)

This paper discusses aspects of carrier multiplication (multiexciton generation by single photons) in semiconductor nanocrystals such as its mechanism, competing relaxation channels,...

Klimov, Victor I

2

Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) |  

Open Energy Info (EERE)

Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) Home > Groups > Energy Systems Integration Qinsun's picture Submitted by Qinsun(35) Member 15 November, 2012 - 13:04 Literature Review The author proposed a linear static state model for multiple energy carriers. The optimal power flow and economic dispatch was determined. The method is a simple method of integrated system planning The methods used in the paper are linear deterministic system without control signal, optimal power flow and economic dispatch The proposed method stabilized the power grid, reduced the marginal cost of electricity, and increased the marginal cost of natural gas. The strength of the proposed method is following: 1. it is integrated; 2. it secures to converge;

3

Experimental Verification of Carrier Multiplication in Graphene  

Science Journals Connector (OSTI)

By this method, we obtain occupation probabilities at eight distinct energies, enabling a safe reconstruction of the time-dependent carrier distribution in the relevant range in momentum space, assuming quasi-instantaneous thermalization of the excited carriers. ... Schaller, R. D.; Klimov, V. I.High Efficiency Carrier Multiplication in PbSe Nanocrystals: Implications for Solar Energy Conversion Phys. ...

T. Plötzing; T. Winzer; E. Malic; D. Neumaier; A. Knorr; H. Kurz

2014-08-21T23:59:59.000Z

4

High Efficiency Carrier Multiplication in PbSe Nanocrystals: Implications for Solar Energy Conversion  

Science Journals Connector (OSTI)

We demonstrate for the first time that impact ionization (II) (the inverse of Auger recombination) occurs with very high efficiency in semiconductor nanocrystals (NCs). Interband optical excitation of PbSe NCs at low pump intensities, for which less than one exciton is initially generated per NC on average, results in the formation of two or more excitons (carrier multiplication) when pump photon energies are more than 3 times the NC band gap energy. The generation of multiexcitons from a single photon absorption event is observed to take place on an ultrafast (picosecond) time scale and occurs with up to 100% efficiency depending upon the excess energy of the absorbed photon. Efficient II in NCs can be used to considerably increase the power conversion efficiency of NC-based solar cells.

R. D. Schaller and V. I. Klimov

2004-05-05T23:59:59.000Z

5

PHYSICAL REVIEW B 83, 155302 (2011) Size dependence of carrier dynamics and carrier multiplication in PbS quantum dots  

E-Print Network [OSTI]

for carrier multiplication shifts from the bulk value to higher energies. However, the energy threshold shift that the carrier-multiplication energy efficiency increases with decreasing QD size. By comparing to theoretical in semiconductor QDs and its potential implications on highly efficient solar energy conversion. Nevertheless, many

Van Stryland, Eric

6

Hydrogen: the future energy carrier  

Science Journals Connector (OSTI)

...from fossil energy carriers to renewable energy fluxes is necessary. The main...challenge is to efficiently convert renewable energy into electricity and the storage...necessary for the change to renewable energy supply will no longer be possible...

2010-01-01T23:59:59.000Z

7

Hydrogen: the future energy carrier  

Science Journals Connector (OSTI)

...Earth. Therefore, natural energy fluxes have to be processed...residential, industrial and mobile energy needs by: -conversion into a usable form of energy, i.e. heat and work...storage in a synthetic energy carrier, e.g. hydrogen, and -transport...

2010-01-01T23:59:59.000Z

8

Cognitive Single Carrier Systems: Joint Impact of Multiple Licensed Transceivers  

E-Print Network [OSTI]

Cognitive Single Carrier Systems: Joint Impact of Multiple Licensed Transceivers Kyeong Jin Kim of interference from multiple licensed transceivers on cognitive underlay single carrier systems is examined, and 3) interference power from the primary transmitters. For this cognitive underlay single carrier

Elkashlan, Maged

9

Comparison of Carrier Multiplication Yields in PbS and PbSe Nanocrystals: The Role of Competing Energy-Loss Processes  

Science Journals Connector (OSTI)

While the use of Eg-normalized photon energies in evaluating the CM efficiencies is still a subject of debate,(30, 31) the fact that PbSe NCs are superior to bulk PbSe with regard to CM-related enhancement of the “energetic output” (evaluated, for example, from the product of Eg and the QE(24, 28) or calculated power conversion efficiencies(7, 8); QE is the quantum efficiency of photon to exciton conversion) is almost universally accepted in the community. ... The efficiency of conventional solar cells is limited because the excess energy of absorbed photons converts to heat instead of producing electron-hole pairs. ... Using atomistic pseudopotential calcns., the authors show here that the more conventional impact ionization mechanism, whereby a photogenerated electron-hole pair decays into a biexciton in a process driven by Coulomb interactions between the carriers, can explain both the rate («1 ps) and the energy threshold (?2.2 times the band gap) of carrier multiplication, without the need to invoke alternative mechanisms. ...

John T. Stewart; Lazaro A. Padilha; M. Mumtaz Qazilbash; Jeffrey M. Pietryga; Aaron G. Midgett; Joseph M. Luther; Matthew C. Beard; Arthur J. Nozik; Victor I. Klimov

2011-12-12T23:59:59.000Z

10

High-efficiency carrier multiplication through direct photogeneration of  

E-Print Network [OSTI]

principles for conversion of solar energy into electricity. One such approach involves the use of carrier) greater than 200% for conversion of light quanta into charge carriers9 . These results were confirmed are characterized by energy structures and carrier dynamics that are distinctly different from those of the lead

Loss, Daniel

11

Luminescence and efficiency of an ideal photovoltaic cell with charge carrier multiplication  

Science Journals Connector (OSTI)

We discuss the potential of an ideal photovoltaic cell with charge carrier multiplication by impact ionization. Thermodynamics requires that carrier multiplication modifies luminescence as well. Such a cell may be described as a hot-carrier cell where interband equilibrium is inhibited and where thermalization is restricted to the band edges. We show that in the limit of low band-gap energy this cell is equivalent to a thermal absorber coupled to a Carnot engine. In conjunction with a spectral filter, a finite band-gap cell with carrier multiplication can even surpass the work obtainable from a selective thermal absorber. In principle, charge carrier multiplication can be tailored such that a single-gap cell matches a fully selective conversion device. A high-efficiency, thin-film cell with carrier multiplication may be thought of as a single-band-gap cell on the basis of a low-band-gap material, with efficiency close to the value of a fully selective device. Low absorptivity for photons below the threshold for carrier multiplication might be realized with an indirect transition. When the solar irradiance exceeds a certain threshold all photons above gap energy may be used.

W. Spirkl and H. Ries

1995-10-15T23:59:59.000Z

12

Methanol as a Hydrogen and Energy Carrier  

Science Journals Connector (OSTI)

The high losses during conversion from renewable power to secondary energy carriers and repowering constitute a general disadvantage. In... 1. Env...

Ludolf Plass; Martin Bertau…

2014-01-01T23:59:59.000Z

13

Chemical Energy Carriers (CEC) for the Utilization of Geothermal...  

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

Chemical Energy Carriers (CEC) for the Utilization of Geothermal Energy Chemical Energy Carriers (CEC) for the Utilization of Geothermal Energy DOE Geothermal Peer Review 2010 -...

14

Hydrogen: The ultimate fuel and energy carrier  

Science Journals Connector (OSTI)

Hydrogen: The ultimate fuel and energy carrier ... Some of the questions include: 1)Why choose hydrogen as a fuel, 2) How is hydrogen produced, 3)Why is this combustion nonpolluting, 4) How is hydrogen stored? ... Hydrogen ...

Gustav P. Dinga

1988-01-01T23:59:59.000Z

15

Plasmonic Energy Collection through Hot Carrier Extraction  

Science Journals Connector (OSTI)

(9) This fundamental hot-carrier mechanism has been used extensively to determine Schottky barrier heights, yet has not been considered for energy conversion due to low efficiencies. ... After hot carriers reach the interface, they either tunnel through or traverse over the barrier, ?b, to be collected by the other electrode depending on their energies relative to the barrier height. ... Nanoantennas are key optical components for light harvesting; photodiodes convert light into a current of electrons for photodetection. ...

Fuming Wang; Nicholas A. Melosh

2011-10-24T23:59:59.000Z

16

Chemical Energy Carriers (CEC) for the Utilization of Geothermal Energy  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. Project objective: Develop chemical energy carrier (CEC) systems to recover thermal energy from enhanced geothermal systems (EGS) in the form of chemical energy, in addition to sensible and latent energy.

17

Theoretical efficiency of 3rd generation solar cells: Comparison between carrier multiplication and down-conversion  

Science Journals Connector (OSTI)

Two of the methods of exceeding the detailed balance limit for a single junction solar cell are down-converting high energy photons to produce two photons and carrier multiplication, whereby high energy photons produce more than one electron–hole pair. Both methods obey the conservation of energy in similar ways, and effectively produce a higher current in the solar cell. Due to this similarity, it has been assumed in the literature that there is no thermodynamic difference between the two methods. Here, we analyzed the two methods using a generalized approach based on Kirchhoff's law of radiation and develop a new model for carrier multiplication. We demonstrate that there is an entropic penalty to be paid for attempting to accomplish all-in-one splitting in carrier multiplication systems, giving a small thermodynamic – and therefore efficiency – advantage to spectral splitting prior to reaching the solar cell. We show this analytically using a derivation of basic thermodynamic identities; numerically by solving for the maximal efficiency; and generally using heat-generation arguments. Our result provides a new limit of entropy generation in solar cells beyond the existing literature, and a new distinction among 3rd generation photovoltaic technologies.

Ze'ev R. Abrams; Majid Gharghi; Avi Niv; Chris Gladden; Xiang Zhang

2012-01-01T23:59:59.000Z

18

Exceeding the Limit in Solar Energy Conversion with Multiple Excitons  

Science Journals Connector (OSTI)

The former comes from the transparence of the semiconductor material to solar radiation with photon energies below the bandgap (Eg), while the latter results from the cooling of hot carriers, initially generated by photon energies above Eg, to the band edges before they are extracted to do work. ... Carrier multiplication or singlet fission can be used to decrease the thermalization loss by converting part of the excess photon energy to multiple electron–hole pairs, thus increasing photocurrent. ... (9) However, such enhancement has little effect on the power conversion efficiency because significant carrier multiplication only occurs at photon energies as high as 4Eg. ...

Xiaoyang Zhu

2013-06-18T23:59:59.000Z

19

Requisites to realize high conversion efficiency of solar cells utilizing carrier multiplication  

Science Journals Connector (OSTI)

We have calculated the limiting conversion efficiency of solar cells utilizing carrier multiplication (CM), using the detailed balance theory. The solar cells were assumed to comprise quantum dots (QDs) embedded in another material. It has been elucidated that three requisites must be fulfilled, so that a sufficient number of photons in the solar spectrum contribute to CM, resulting in significantly higher conversion efficiency than the values of conventional cells. These requisites are as follows: (1) the effective mass of electrons in the \\{QDs\\} should be much lighter than that of holes, so that the threshold photon energy above which CM can occur is close to the energy gap of the QDs. In this respect, InAs is a promising candidate for the QD material, but PbSe and Si are not. (2) The potential barrier height for electrons in the QDs, which determines the upper limit of the quantum yield of photon-to-carrier conversion (?limit), should be slightly larger than the energy gap of the \\{QDs\\} to achieve a ?limit value of 2, when the solar cells are used under the non-concentrated insolation. InAs \\{QDs\\} embedded in AlxGa1?xAsySb1?y is a possible candidate to fulfill these two criteria. A higher barrier does not contribute to generation of more carriers, but likely disturbs electron transport. In contrast, under the concentrated insolation, a potential barrier slightly higher than twice the energy gap to achieve a ?limit value of 3 leads to higher conversion efficiency. (3) The quantum yield of photon-to-carrier conversion as a function of photon energy should rise as steeply as possible at the threshold photon energy. The experimentally observed quantum yield with a sloping rise leads to little improvement in conversion efficiency due to CM, under the non-concentrated insolation. Although it could be improved under the concentrated insolation, the conversion efficiency cannot reach the limiting value for triple-junction solar cells.

Yasuhiko Takeda; Tomoyoshi Motohiro

2010-01-01T23:59:59.000Z

20

Pipeline Carriers (Montana) | Department of Energy  

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

Carriers (Montana) Carriers (Montana) Pipeline Carriers (Montana) < Back Eligibility Utility Investor-Owned Utility Industrial Construction Municipal/Public Utility Rural Electric Cooperative Retail Supplier Institutional Systems Integrator Fuel Distributor Program Info State Montana Program Type Siting and Permitting Provider State of Montana Public Service Commission Pipeline carriers transporting crude petroleum, coal, the products of crude petroleum or coal, or carbon dioxide produced in the combustion or gasification of fossil fuels are required to abide by these regulations. The regulations address construction permits and the use of eminent domain by pipeline carriers, records and reporting, connection and interchange facilities, and the prohibition of discrimination in rates and service

Note: This page contains sample records for the topic "multiple energy carriers" 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

Energy Forms or Energy Carriers(G, Herrmann et al. 1983) | OpenEI Community  

Open Energy Info (EERE)

Energy Forms or Energy Carriers(G, Herrmann et al. 1983) Energy Forms or Energy Carriers(G, Herrmann et al. 1983) Home > Groups > Energy Systems Integration Qinsun's picture Submitted by Qinsun(35) Member 15 November, 2012 - 10:28 Literature Review The author proposed the term of "energy carriers' to describe the idea of transfer energy. This term clearly defines and classify the energy forms. The equation of energy carrier was proposed. Energy is transferred with other kinds of substance-like currents (flow). These currents are energy carriers Energy carriers is more appropriate to describe the appearance of energy The paper provided better classification that helped us to form an equation of integrated energy No complete list or equation of energy carrier was studied in the paper. Problem: What is the general process of energy flow diagram using energy

22

Conditions for a carrier multiplication in amorphous-selenium based photodetector  

SciTech Connect (OSTI)

Amorphous selenium is a promising candidate for high sensitivity photodetector due to its unique carrier multiplication phenomenon. More than 10 carriers can be generated per incident photon, which leads to high photo-conversion efficiency of 1000% that allows real-time imaging in dark ambient. However, application of this effect has been limited to specific devices due to the lack in material characterization. In this article, mechanism of carrier multiplication has been clarified using time-of-flight secondary ion mass spectroscopy and Raman spectroscopy. A prototype photodetector achieved photo conversion efficiency of 4000%, which explains the signal enhancement mechanism in a-Se based photodetector.

Masuzawa, Tomoaki; Kuniyoshi, Shingo; Onishi, Masanori; Kato, Richika; Saito, Ichitaro; Okano, Ken [Department of Material Science, International Christian University, S102 Science Hall, ICU, 3-10-2 Osawa, Mitaka, Tokyo 181-8585 (Japan)] [Department of Material Science, International Christian University, S102 Science Hall, ICU, 3-10-2 Osawa, Mitaka, Tokyo 181-8585 (Japan); Yamada, Takatoshi [Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, Tsukuba, Ibaraki 305-8568 (Japan)] [Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, Tsukuba, Ibaraki 305-8568 (Japan); Koh, Angel T. T.; Chua, Daniel H. C. [Department of Materials Science and Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574 (Singapore)] [Department of Materials Science and Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574 (Singapore); Shimosawa, Tatsuo [Department of Clinical Laboratory, Faculty of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8655 (Japan)] [Department of Clinical Laboratory, Faculty of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8655 (Japan)

2013-02-18T23:59:59.000Z

23

Carrier Multiplication and Its Reduction by Photodoping in Colloidal InAs Quantum Dots J. J. H. Pijpers,*, E. Hendry, M. T. W. Milder, R. Fanciulli, J. Savolainen, J. L. Herek,  

E-Print Network [OSTI]

. For excitation by high-energy photons (2.7 times the band gap energy), highly efficient carrier multiplication applications of QDs in the field of solar energy conversion.23 In a conventional silicon solar cell, much fast intraband carrier cooling after photogeneration.23 A possible approach to harvest high-energy

Exeter, University of

24

Alternative Carriers For Remote Renewable Energy Sources Using Existing Cng  

Open Energy Info (EERE)

Carriers For Remote Renewable Energy Sources Using Existing Cng Carriers For Remote Renewable Energy Sources Using Existing Cng Infrastructure Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Alternative Carriers For Remote Renewable Energy Sources Using Existing Cng Infrastructure Details Activities (0) Areas (0) Regions (0) Abstract: Optimal locations of renewable energy sources are often remote relative to consumers and electricity grids. In contrast, some existing CNG pipelines pass through optimal renewable energy harvesting regions. The growing interest in the possibility of using geothermal energy in central Australia has created a need to assess the economic, technical, and environmental viability of converting remote renewable energy to fuel for transport using existing CNG pipelines, and to compare this alternative

25

New energy saving system for future LNG carriers  

SciTech Connect (OSTI)

Steam turbine plant, which burns BOG (Boil-Off Gas) as fuel, has bene installed for LNG carriers with the necessity of disposing BOG safely. Are other plants unpractical for LNG carriers? To answer to this question, this paper evaluates (1) dual fuel diesel, (2) diesel with reliquefaction plant, (3) diesel with auxiliary boiler and power assist motor, (4) gas turbine/steam turbine and (5) steam turbine with CRP (Contra Rotating Propeller) from several aspects, such as safety and reliability, maintainability and operability, economy and effect on environment. Based on the above studies, this paper proposes Steam turbine with CRP plant as a new energy saving system for future LNG carriers.

Kahara, Susumu; Suetake, Yoshihiro [Mitsubishi Heavy Industries, Ltd., Tokyo (Japan); Ishimaru, Junshiro; Hiraoka, Kazuyoshi [Mitsubishi Heavy Industries, Ltd., Nagasaki (Japan)

1994-12-31T23:59:59.000Z

26

Carrier multiplication yields in PbS and PbSe nanocrystals measured by transient photoluminescence  

Science Journals Connector (OSTI)

We report here an assessment of carrier multiplication (CM) yields in PbSe and PbS nanocrystals (NCs) by a quantitative analysis of biexciton and exciton dynamics in transient photoluminescence decays. Interest in CM, the generation of more than one electron and hole in a semiconductor after absorption of one photon, has renewed in recent years because of reports suggesting greatly increased efficiencies in nanocrystalline materials compared to the bulk form, in which CM was otherwise too weak to be of consequence in photovoltaic energy conversion devices. In our PbSe and PbS NC samples, however, we estimate using transient photoluminescence that at most 0.25 additional e-h pairs are generated per photon, even at photon energies five times larger than the first exciton energy, instead of the much higher values reported in the literature. We argue by comparing NC CM estimates and reported bulk values on an absolute energy basis, which we justify as appropriate on physical grounds, that the data reported thus far are inconclusive with respect to the importance of nanoscale-specific phenomena in the CM process.

Gautham Nair; Scott M. Geyer; Liang-Yi Chang; Moungi G. Bawendi

2008-09-29T23:59:59.000Z

27

Pathways to hydrogen as an energy carrier  

Science Journals Connector (OSTI)

...sunlight. Enzymes use this energy to break water down into...also take place in the dark involving, for example...is the relatively low energy conversion efficiencies...Huber and Michel for the discovery of photosynthesis reaction...adaptation to life in the dark, they initially emit...

2007-01-01T23:59:59.000Z

28

Pathways to hydrogen as an energy carrier  

Science Journals Connector (OSTI)

...process has been assisted by solar energy as well as using...demonstrated in Sweden and Canada in CNG vehicles from original...the algae saturate at low solar irradiances and thereby...countries like Brazil, Canada, Egypt, Iceland, New...

2007-01-01T23:59:59.000Z

29

Multiple Energy Exciton Shelves in Quantum-Dot–DNA Nanobioelectronics  

Science Journals Connector (OSTI)

The DNA molecules joining the QDs form an energetic bridge that provides an efficient conduction pathway for the different energy carriers, capturing the hot electron before it can cool to the bandedge via nonradiative relaxation. ... Interband optical excitation of PbSe NCs at low pump intensities, for which less than one exciton is initially generated per NC on average, results in the formation of two or more excitons (carrier multiplication) when pump photon energies are more than 3 times the NC band gap energy. ...

Samuel M. Goodman; Vivek Singh; Josep Casamada Ribot; Anushree Chatterjee; Prashant Nagpal

2014-10-24T23:59:59.000Z

30

Multi-Carrier Multiple Access is Sum-Rate Optimal for Block Transmissions over Circulant ISI Channels*  

E-Print Network [OSTI]

. Single-user multi-carrier transmissions loaded according to the CSI-based "water-pouring"principleMulti-Carrier Multiple Access is Sum-Rate Optimal for Block Transmissions over Circulant ISI at the transmitter. Cir- culant ISI channels are ensured either with cyclic pre`xed block transmissions

Giannakis, Georgios

31

Photovoltaic and photoelectrochemical conversion of solar energy  

Science Journals Connector (OSTI)

...multiple carrier generation...renewable energy|solar energy conversion|photovoltaic...photovoltaic energy conversion process...minority carriers in the p-type...efficiency carrier multiplication...for solar energy conversion. Phys...

2007-01-01T23:59:59.000Z

32

Federal Energy Management Program: Multiple Motivations Institutional  

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

Multiple Multiple Motivations Institutional Change Principle to someone by E-mail Share Federal Energy Management Program: Multiple Motivations Institutional Change Principle on Facebook Tweet about Federal Energy Management Program: Multiple Motivations Institutional Change Principle on Twitter Bookmark Federal Energy Management Program: Multiple Motivations Institutional Change Principle on Google Bookmark Federal Energy Management Program: Multiple Motivations Institutional Change Principle on Delicious Rank Federal Energy Management Program: Multiple Motivations Institutional Change Principle on Digg Find More places to share Federal Energy Management Program: Multiple Motivations Institutional Change Principle on AddThis.com... Sustainable Buildings & Campuses

33

Hydrogen as an energy carrier: Prospects and challenges  

Science Journals Connector (OSTI)

This paper provides an insight to the feasibility of adopting hydrogen as a key energy carrier and fuel source in the near future. It is shown that hydrogen has several advantages, as well as few drawbacks in using for the above purposes. The research shows that hydrogen will be a key player in storing energy that is wasted at generation stage in large-scale power grids by off-peak diversion to dummy loads. The estimations show that by the year of 2050 there will be a hydrogen demand of over 42 million metric tons or 45 billion gallon gasoline equivalent (GGE) in the United States of America alone which can fuel up 342 million light-duty vehicles for 51 × 1011 miles (82 × 1011 km) travel per year. The production at distributed level has also been discussed. The paper also presents the levels of risk in production, storage and distribution stages and proposes possible techniques to address safety issues. It is shown that the storage in small to medium scale containers is much economical compared to doing the same at large-scale containers. The study concludes that hydrogen has a promising future to be a highly feasible energy carrier and energy source itself at consumer level.

Kaveh Mazloomi; Chandima Gomes

2012-01-01T23:59:59.000Z

34

Carrier effective masses in symmetrically strained (GaIn)As/Ga(PAs) multiple-quantum-well structures  

Science Journals Connector (OSTI)

The carrier effective masses in symmetrically strained (GaIn)As/Ga(PAs) multiple-quantum-well heterostructures have been determined as a function of the incorporated compressive strain in the (GaIn)As quantum-well layer by applying magneto-optical studies. The precise structural parameters, i.e., individual layer thicknesses, strain values, and crystalline perfection, have been determined independently by high-resolution x-ray diffraction and transmission electron microscopy. By analyzing both the allowed and forbidden optical transitions as a function of the magnetic field, detected by polarization-dependent magnetophotoluminescence excitation spectroscopy, the exciton binding energy as well as the effective in-plane electron and heavy-hole masses have been determined quantitatively as a function of strain. The theoretically predicted significant decrease of the in-plane heavy-hole mass with increasing strain has been observed. The obtained results are discussed and compared with the contradictory results reported in the literature.

M. Volk; S. Lutgen; T. Marschner; W. Stolz; E. O. Göbel; P. C. M. Christianen; J. C. Maan

1995-10-15T23:59:59.000Z

35

ARS 40 - Public Utilities and Carriers | Open Energy Information  

Open Energy Info (EERE)

Public Utilities and Carriers Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: ARS 40 - Public Utilities and CarriersLegal...

36

"System and Power Market Consequences of Implementing Hydrogen as Energy Carrier in the Nordic Energy System"  

E-Print Network [OSTI]

debated and research in many areas related to hydrogen production and storage, fuel cells for vehicles1 "System and Power Market Consequences of Implementing Hydrogen as Energy Carrier in the Nordic National Laboratory, Frederiksborgvej 399, P.O. 49, 4000 Roskilde, Denmark Abstract By including hydrogen

37

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

38

Energy Evaluation for Lignite Pyrolysis by Solid Heat Carrier Coupled with Gasification  

Science Journals Connector (OSTI)

Between the two reactors, solid heat carriers are circulated to carry the heat from the gasifier to the pyrolyzer. ... With the purpose of revealing the features of energy use and chemical element conversion, and the feasibility and the rationality of the coupled system, some related experiments were performed, and the simulation flow sheet for lignite pyrolysis by a solid heat carrier coupled with gasification was established by Aspen Plus 11.1 on the basis of the experimental data. ... The amount of the solid heat carrier was determined by two factors: (1) the temperature of the solid heat carrier should be heated to 750 °C in the combustion furnace; (2) the energy carried by the solid heat carrier must be sufficient to satisfy the energy demands of the drying and pyrolysis units. ...

Qun Yi; Jie Feng; Bingchuan Lu; Jing Deng; Changlian Yu; Wenying Li

2013-07-12T23:59:59.000Z

39

Common Pipeline Carriers (North Dakota) | Department of Energy  

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

Common Pipeline Carriers (North Dakota) Common Pipeline Carriers (North Dakota) Common Pipeline Carriers (North Dakota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Program Info State North Dakota Program Type Siting and Permitting Any entity that owns, operates, or manages a pipeline for the purpose of transporting crude petroleum, gas, coal, or carbon dioxide within or through the state of North Dakota, or is engaged in the business of

40

Comparing Multiple Exciton Generation in Quantum Dots To Impact Ionization in Bulk Semiconductors: Implications for Enhancement of Solar Energy Conversion  

Science Journals Connector (OSTI)

Interband optical excitation of PbSe NCs at low pump intensities, for which less than one exciton is initially generated per NC on average, results in the formation of two or more excitons (carrier multiplication) when pump photon energies are more than 3 times the NC band gap energy. ... on film doping, NC carrier dynamics, and inter-NC interactions is necessary to build solar energy conversion devices that can harvest the multiple carriers produced by MEG. ... A single-threshold quantum-using device in which the excited carriers thermally equilibrate among themselves, but not with the environment, converts solar energy with an efficiency approaching that of an infinite-threshold device. ...

Matthew C. Beard; Aaron G. Midgett; Mark C. Hanna; Joseph M. Luther; Barbara K. Hughes; Arthur J. Nozik

2010-07-26T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Energy Carrier Networks: Interactions and Integrated Operational Planning  

Science Journals Connector (OSTI)

This complex infrastructure, which is composed by all the technical energy systems, allows providing the consumers with the “useful energies” or “energy services”. Technical energy systems include production, conversion

Ricardo Rubio-Barros; Diego Ojeda-Esteybar…

2012-01-01T23:59:59.000Z

42

Prospects of Hydrogen as a Future Energy Carrier  

Science Journals Connector (OSTI)

It is evident that the conversion of renewable energies into hydrogen, its storage and its conversion back into electricity is plagued with a comparatively low overall energy efficiency when compared with traditi...

Ludwig Jörissen

2012-01-01T23:59:59.000Z

43

Southern States Energy Compact (Multiple States) | Department of Energy  

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

Southern States Energy Compact (Multiple States) Southern States Energy Compact (Multiple States) Southern States Energy Compact (Multiple States) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Alabama Program Type Environmental Regulations Industry Recruitment/Support Provider Southern States Energy Board

44

Hydrogen as an energy carrier for railway traction.  

E-Print Network [OSTI]

??The technical suitability of hydrogen for railway traction is evaluated in the research. World-wide, diesel fuel is currently the main source of energy for railways… (more)

Hoffrichter, Andreas

2013-01-01T23:59:59.000Z

45

Alternative Carriers For Remote Renewable Energy Sources Using...  

Open Energy Info (EERE)

the economic, technical, and environmental viability of converting remote renewable energy to fuel for transport using existing CNG pipelines, and to compare this alternative...

46

Chemical Energy Carriers (CEC) for the Utilization of Geothermal...  

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

contain any proprietary, confidential, or otherwise restricted information" 2 | US DOE Geothermal Program eere.energy.gov Public Service of Colorado Ponnequin Wind Farm...

47

Towards sustainable production of clean energy carriers from biomass resources  

Science Journals Connector (OSTI)

A great fraction of the world’s energy requirements are presently met through the unfettered use of fossil-derived fuels. However, due to the anticipated demise of these energy sources and the environmental and socioeconomic concerns associated with their use, a recent paradigm shift is to displace conventional fuels with renewable energy sources. Among various alternatives, biomasses have garnered tremendous interests as potential feedstock for clean energy production. While numerous biorefinery schemes and conversion technologies exist for the transformation of biomass into usable energy forms, they are not cost-efficient and economically viable to compete with the existing petroleum-refinery technologies. In particular, the recalcitrant nature of several feedstock presents a major technological obstacle for their processing and transformation. Providentially, the synergistic integration of various biochemical and bioprocessing technologies is aiding in the establishment of future biomass energy programs. This article reviews the state of the art and future challenges in the recent development of biomass and associated transformation technologies for clean production of biofuels.

Kajan Srirangan; Lamees Akawi; Murray Moo-Young; C. Perry Chou

2012-01-01T23:59:59.000Z

48

Energy resolution and related charge carrier mobility in LaBr{sub 3}:Ce scintillators  

SciTech Connect (OSTI)

The scintillation response of LaBr{sub 3}:Ce scintillation crystals was studied as function of temperature and Ce concentration with synchrotron X-rays between 9 keV and 100 keV. The results were analyzed using the theory of carrier transport in wide band gap semiconductors to gain new insights into charge carrier generation, diffusion, and capture mechanisms. Their influence on the efficiency of energy transfer and conversion from X-ray or ?-ray photon to optical photons and therefore on the energy resolution of lanthanum halide scintillators was studied. From this, we will propose that scattering of carriers by both the lattice phonons and by ionized impurities are key processes determining the temperature dependence of carrier mobility and ultimately the scintillation efficiency and energy resolution. When assuming about 100 ppm ionized impurity concentration in 0.2% Ce{sup 3+} doped LaBr{sub 3,} mobilities are such that we can reproduce the observed temperature dependence of the energy resolution, and in particular, the minimum in resolution near room temperature is reproduced.

Khodyuk, I. V.; Quarati, F. G. A.; Alekhin, M. S.; Dorenbos, P. [Luminescence Materials Research Group, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, Delft, 2629JB (Netherlands)] [Luminescence Materials Research Group, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, Delft, 2629JB (Netherlands)

2013-09-28T23:59:59.000Z

49

Charged-particle multiplicity at LHC energies  

ScienceCinema (OSTI)

The talk presents the measurement of the pseudorapidity density and the multiplicity distribution with ALICE at the achieved LHC energies of 0.9 and 2.36 TeV.An overview about multiplicity measurements prior to LHC is given and the related theoretical concepts are briefly discussed.The analysis procedure is presented and the systematic uncertainties are detailed. The applied acceptance corrections and the treatment of diffraction are discussed.The results are compared with model predictions. The validity of KNO scaling in restricted phase space regions is revisited. 

None

2011-10-06T23:59:59.000Z

50

Anaerobic conversion of microalgal biomass to sustainable energy carriers – A review  

Science Journals Connector (OSTI)

This review discusses anaerobic production of methane, hydrogen, ethanol, butanol and electricity from microalgal biomass. The amenability of microalgal biomass to these bioenergy conversion processes is compared with other aquatic and terrestrial biomass sources. The highest energy yields (kJ g?1 dry wt. microalgal biomass) reported in the literature have been 14.8 as ethanol, 14.4 as methane, 6.6 as butanol and 1.2 as hydrogen. The highest power density reported from microalgal biomass in microbial fuel cells has been 980 mW m?2. Sequential production of different energy carriers increases attainable energy yields, but also increases investment and maintenance costs. Microalgal biomass is a promising feedstock for anaerobic energy conversion processes, especially for methanogenic digestion and ethanol fermentation. The reviewed studies have mainly been based on laboratory scale experiments and thus scale-up of anaerobic utilization of microalgal biomass for production of energy carriers is now timely and required for cost-effectiveness comparisons.

Aino-Maija Lakaniemi; Olli H. Tuovinen; Jaakko A. Puhakka

2013-01-01T23:59:59.000Z

51

Alternative carriers for remote renewable energy sources using existing CNG infrastructure  

Science Journals Connector (OSTI)

Optimal locations of renewable energy sources are often remote relative to consumers and electricity grids. In contrast, some existing CNG pipelines pass through optimal renewable energy harvesting regions. The growing interest in the possibility of using geothermal energy in central Australia has created a need to assess the economic, technical, and environmental viability of converting remote renewable energy to fuel for transport using existing CNG pipelines, and to compare this alternative with that required to construct new high-capacity electricity transmission lines. This assessment is reported, using first the conversion of electricity to hydrogen, and then conversion of the hydrogen to methane. The paper also compares the alternative of direct injection of hydrogen into existing CNG pipelines to create “hythane” (HCNG). An economic assessment showed that the relative capital and operating costs are sufficient make the alternative carrier prospect worthy of further consideration.

Robert R. Dickinson; David L. Battye; Valerie M. Linton; Peter J. Ashman; Graham (Gus) J. Nathan

2010-01-01T23:59:59.000Z

52

Free Energy of Multiple Overlapping Chains  

Science Journals Connector (OSTI)

How accurate is pair additivity in describing interactions between soft polymer-based nanoparticles? Using numerical simulations we compute the free energy cost required to overlap multiple chains in the same region of space, and provide a quantitative measure of the effectiveness of pair additivity as a function of chain number and length. Our data suggest that pair additivity can indeed become quite inadequate as the chain density in the overlapping region increases. We also show that even a scaling theory based on polymer confinement can only partially account for the complexity of the problem. In fact, we unveil and characterize an isotropic to star-polymer crossover taking place for large number of chains, and propose a revised scaling theory that better captures the physics of the problem.

Katherine Klymko and Angelo Cacciuto

2011-12-27T23:59:59.000Z

53

High photo-excited carrier multiplication by charged InAs dots in AlAs/GaAs/AlAs resonant tunneling diode  

E-Print Network [OSTI]

We present an approach for the highly sensitive photon detection based on the quantum dots (QDs) operating at temperature of 77K. The detection structure is based on an AlAs/GaAs/AlAs double barrier resonant tunneling diode combined with a layer of self-assembled InAs QDs (QD-RTD). A photon rate of 115 photons per second had induced 10nA photocurrent in this structure, corresponding to the photo-excited carrier multiplication factor of 10^7. This high multiplication factor is achieved by the quantum dot induced memory effect and the resonant tunneling tuning effect of QD-RTD structure.

Wangping Wang; Ying Hou; Dayuan Xiong; Ning Li; Wei Lu

2007-10-15T23:59:59.000Z

54

Project Profile: CSP Energy Storage Solutions - Multiple Technologies...  

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

CSP Energy Storage Solutions - Multiple Technologies Compared US Solar Holdings logo US Solar Holdings, under the Thermal Storage FOA, is aiming to demonstrate commercial,...

55

Multiple Layer Graphene Optical Modulator - Energy Innovation...  

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

Materials Advanced Materials Find More Like This Return to Search Multiple Layer Graphene Optical Modulator Lawrence Berkeley National Laboratory Contact LBL About This...

56

The use of solar energy can enhance the conversion of carbon dioxide into energy-rich products: stepping towards artificial photosynthesis  

Science Journals Connector (OSTI)

...considered as a H2 carrier as equation...pressure) with energy recovery...16]. The conversion of methanol...Catalysis for Energy: New Challenges...2006 Solar conversion efficiency...cells with carrier multiplication...of solar energy conversion technologies...

2013-01-01T23:59:59.000Z

57

PJM Interconnection (Multiple States) | Department of Energy  

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

PJM Interconnection (Multiple States) PJM Interconnection (Multiple States) PJM Interconnection (Multiple States) < Back Eligibility Developer Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Delaware Program Type Interconnection PJM (originally Pennsylvania, Jersey, Maryland) Interconnection is a Regional Transmission Organization (RTO) that coordinates the movement of wholesale electricity in all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia. The PJM region has an area of 214,000 square miles, a population of about 60 million and a peak demand of 163,848 megawatts

58

Effect of the energy dependence of the carrier scattering time on the thermoelectric power factor of quantum wells and nanowires  

E-Print Network [OSTI]

of Physics. [http://dx.doi.org/10.1063/1.4729381] The efficiency of a thermoelectric material is deter- minedEffect of the energy dependence of the carrier scattering time on the thermoelectric power factor thermoelectric performance of solid solutions CuGa1-xInxTe2 (x=0­1.0) Appl. Phys. Lett. 100, 231903 (2012

Anlage, Steven

59

The key role of charge carriers scattering on polar optical phonons in semiconductors for thermoelectric energy conversion  

Science Journals Connector (OSTI)

Abstract The Boltzmann equation for charge carriers in n-type InSb is solved by numerical procedure. Temperature and donor atoms concentration dependences of kinetic coefficients are studied with respect to the thermoelectric energy conversion efficiency. It is found that the mechanism of the charge carriers scattering on polar optical phonons is of crucial importance for thermoelectric figure of merit of semiconductors. High thermoelectric efficiency of compounds and alloys comprising such heavy atoms as Pb or Bi is explained by weakening of the above mentioned scattering mechanism due to gigantic values of dielectric constants of substances caused by high polarizability of heavy atoms.

V.G. Orlov; G.S. Sergeev

2013-01-01T23:59:59.000Z

60

Evaluating Energy Efficiency of Floating Point Matrix Multiplication on FPGAs  

E-Print Network [OSTI]

Evaluating Energy Efficiency of Floating Point Matrix Multiplication on FPGAs Kiran Kumar Matam, prasanna}@usc.edu Abstract--Energy efficiency has emerged as one of the key performance metrics in scientific computing. In this work, we evaluate the energy efficiency of floating point matrix multipli

Prasanna, Viktor K.

Note: This page contains sample records for the topic "multiple energy carriers" 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

Midwest Renewable Energy Tracking System (Multiple States) | Department of  

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

Renewable Energy Tracking System (Multiple States) Renewable Energy Tracking System (Multiple States) Midwest Renewable Energy Tracking System (Multiple States) < Back Eligibility Developer Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Illinois Program Type Green Power Purchasing Provider MidWest ISO The Midwest Renewable Energy Tracking System (M-RETS®) tracks renewable energy generation in participating States and Provinces and assists in verifying compliance with individual state/provincial or voluntary Renewable Portfolio Standards (RPS) and objectives. M-RETS® is a tool to keep track of all relevant information about renewable energy produced and delivered in the region. Currently, several States and Provinces participate in M-RETS®: Illinois,

62

Agro-industry sugarcane residues disposal: The trends of their conversion into energy carriers in Cuba  

Science Journals Connector (OSTI)

The goal of the present work was to carry out a review of the disposal practices for the agro-industry’s sugarcane residue and the trends of energy use in Cuba. The lack of an alternative energy carrier to electricity with storage capability for use in off-season has to date been an unsolvable question. The improvement of cogeneration capacity via implementation of CEST or BIG/GTCC and the barriers for their implementation, the introduction of a medium size (3 ton/h) fast pyrolysis module (FPM3) as a solution for off-season energy demand in the agro-industry, and an assessment of the energy required to do so, were also analyzed. Bio-oil production from bagasse and sugarcane agriculture residues (SCAR) and their particularities at the sugar mill are treated. The influence of sugar facility production process configuration is analyzed. The fast pyrolysis products and the trends of their end uses in Cuba are presented. The production cost of a ton of Bio-oil for FPM3 conditions was calculated at 155 USD/ton and the payback time as a function of selling price between 160 and 110 USD/ton was estimated to be from 1.5 to 4 years. The economic feasibility of the FPM3 was estimated, comparing the added values for three scenarios: 1st case, currently-used sugar production, 16.5 USD/ton of cane; 2nd case, factoring in the cogeneration improvement, 27 USD/ton of cane; and 3rd case, with cogeneration improvement and Bio-oil production, 40 USD/ton of cane. The energy use of SCAR and the introduction of FPM3 in the sugar mill are promising improvements that could result in a potential surplus of 80 kW he/ton of cane in-season, or 6 × 106 ton of Bio-oil (LHV=15 MJ/kg) for use off-season in a milling season of 4 million tons of raw sugar.

W. Alonso Pippo; P. Garzone; G. Cornacchia

2007-01-01T23:59:59.000Z

63

Life Cycle Assessment of Energy and Energy Carriers from Waste Matter – A Review  

Science Journals Connector (OSTI)

Abstract The development of economic growth, population, and rapid urbanization is increasing the pace of energy consumption and waste production. These trends, if left unchecked, will lead to massive environmental degradation. Waste-to-energy (WtE) conversion is one way of alleviating the twin problems of fossil fuel use and solid waste disposal, and their related problems (climate change, pollution etc). Life Cycle Assessment (LCA) is a useful tool for assessing the environmental performances of WtE systems. Over fifty LCA studies on various WtE systems are reviewed, comprising different waste sources, energy products, and including countries from six continents. A variety of waste types, such as agricultural residues, used cooking oil, manure, municipal solid waste, and waste wood were studied. The review found that a large majority of WtE has lower greenhouse gas emissions when compared to fossil fuels. However, some WtE studies showed an increase in environmental impacts such as acidification and eutrophication, compared to fossil fuel extraction and use. This is due to the use of chemicals (fertilizers, pesticides) in agriculture and the allocation of these impacts to the use of the agricultural waste for energy conversion. Other problems with LCA are also highlighted, including allocation issues, definition of reference systems and functional units.

Augustine Quek; Rajasekhar Balasubramanian

2014-01-01T23:59:59.000Z

64

Quantum dynamics in condensed phases : charge carrier mobility, decoherence, and excitation energy transfer  

E-Print Network [OSTI]

In this thesis, we develop analytical models for quantum systems and perform theoretical investigations on several dynamical processes in condensed phases. First, we study charge-carrier mobilities in organic molecular ...

Cheng, Yuan-Chung, Ph. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

65

Determining the phase-energy coupling coefficient in carrier-envelope phase measurements  

Science Journals Connector (OSTI)

For f-to-2f interferometers based on white-light generation in sapphire plates, the accuracy of the carrier-envelope (CE) phase measurement and stabilization is affected by the laser...

Li, Chengquan; Moon, Eric; Wang, He; Mashiko, Hiroki; Nakamura, Christopher M; Tackett, Jason; Chang, Zenghu

2007-01-01T23:59:59.000Z

66

Estimating exergy prices for energy carriers in heating systems: Country analyses of exergy substitution with capital expenditures  

Science Journals Connector (OSTI)

Exergy represents the ability of an energy carrier to perform work and can be seen as a core indicator for measuring its quality. In this article we postulate that energy prices reflect the exergy content of the underlying energy carrier and that capital expenditures can substitute for exergy to some degree. We draw our line of argumentation from cost and technology data for heating systems of four European countries: Austria, Finland, The Netherlands, and Sweden. Firstly, this paper shows that the overall consumer costs for different heating options, widely installed in those countries, are in the same range. In this analysis we derived an overall standard deviation of about 8%. Secondly, additional analysis demonstrates that the share of capital costs on total heating cost increases with lower exergy input. Based on the data used in this analysis, we conclude that for the case of modern cost effective heating systems the substitution rate between exergy and capital is in the vicinity of 2/3. This means that by reducing the average specific exergy input of the applied energy carriers by one unit, the share of capital costs on the total costs increases by 2/3 of a unit.

A. Müller; L. Kranzl; P. Tuominen; E. Boelman; M. Molinari; A.G. Entrop

2011-01-01T23:59:59.000Z

67

Energy and Isotope Dependence of Neutron Multiplicity Distributions  

E-Print Network [OSTI]

Fission neutron multiplicity distributions are known to be well reproduced by simple Gaussian distributions. Many previous evaluations of multiplicity distributions have adjusted the widths of Gaussian distributions to best fit the measured multiplicity distributions Pn. However, many observables do not depend on the detailed shape of Pn, but depend on the first three factorial moments of the distributions. In the present evaluation, the widths of Gaussians are adjusted to fit the measured 2nd and 3rd factorial moments. The relationships between the first three factorial moments are estimated assuming that the widths of the multiplicity distributions are independent of the initial excitation energy of the fissioning system. These simple calculations are in good agreement with experimental neutron induced fission data up to an incoming neutron energy of 10 MeV.

Lestone, J P

2014-01-01T23:59:59.000Z

68

Energy and Isotope Dependence of Neutron Multiplicity Distributions  

E-Print Network [OSTI]

Fission neutron multiplicity distributions are known to be well reproduced by simple Gaussian distributions. Many previous evaluations of multiplicity distributions have adjusted the widths of Gaussian distributions to best fit the measured multiplicity distributions Pn. However, many observables do not depend on the detailed shape of Pn, but depend on the first three factorial moments of the distributions. In the present evaluation, the widths of Gaussians are adjusted to fit the measured 2nd and 3rd factorial moments. The relationships between the first three factorial moments are estimated assuming that the widths of the multiplicity distributions are independent of the initial excitation energy of the fissioning system. These simple calculations are in good agreement with experimental neutron induced fission data up to an incoming neutron energy of 10 MeV.

J. P. Lestone

2014-09-17T23:59:59.000Z

69

Influence of Multiple Scattering on High-energy Deuteron Quasi-optical Birefringence Effect  

E-Print Network [OSTI]

Influence of multiple scattering on high-energy deuteron quasi-optical birefringence effect is discussed.

V. G. Baryshevsky; A. R. Shyrvel

2011-01-12T23:59:59.000Z

70

Multiple Motivations Institutional Change Principle | Department of Energy  

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

Multiple Motivations Institutional Change Principle Multiple Motivations Institutional Change Principle Multiple Motivations Institutional Change Principle October 8, 2013 - 11:02am Addthis The multiple motivations principle suggests that a portfolio approach-rather than a single strategy-may be required to achieve change. Research demonstrates that people and institutions adopt new behaviors for many reasons. They likely need more than one reason for changing their current behavior. Therefore, people may shift to more sustainable, energy-efficient behaviors in the workplace because those actions are part of the agency's mission, lower costs, make work life easier or healthier, and are the "right thing to do." Methods Because individuals have different motivations, a variety of approaches should be used to change behavior. Such approaches can range widely, from

71

Distribution of Four-Momentum Transfer in Multiple Meson Productions by High Energy Muons  

Science Journals Connector (OSTI)

......Multiple Meson Productions by High Energy Muons S. Higashi T. Kitamura Y. Mishima...Multiple Meson Productions by High Energy Muons S. Higashi, T. Kitamura, Y...production. Provided that the high energy muon-nucleon inter- actions occur......

S. Higashi; T. Kitamura; Y. Mishima; S. Miyamoto; H. Shibata; Y. Watase; K. Daiyasu; K. Kobayakawa; T. Murota; T. Nakano

1964-01-01T23:59:59.000Z

72

Carrier recombination flux in bulk heterojunction polymer:fullerene solar cells: Effect of energy disorder on ideality factor  

Science Journals Connector (OSTI)

Energy disorder reduces the achievable open-circuit voltage in organic bulk-heterojunction solar cells. Here the effect of disorder on charge carrier recombination flux is numerically modeled. The recombination current follows an exponential dependence on voltage (Fermi level splitting) parameterized by ? (inverse of the diode ideality factor), which reduces the power conversion efficiency through lower fill factors. ?-Parameter approaches unity (Boltzmann approximation) at room temperature only in the case of weak disorder (? ? 50 meV). For larger disorder values (? ? 100 meV) usually encountered in real devices, a huge reduction in ? (open-circuit voltage, and fill factor) is predicted following a relationship as ? ? ln ??1.

Germà Garcia-Belmonte

2013-01-01T23:59:59.000Z

73

North American Renewables Registry (Multiple States) | Department of Energy  

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

American Renewables Registry (Multiple States) American Renewables Registry (Multiple States) North American Renewables Registry (Multiple States) < Back Eligibility Developer Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State North Carolina Program Type Green Power Purchasing Provider APX The North American Renewables Registry (NAR) provides a Web-based platform trusted to create, track, and manage renewable energy certificate (REC) origination for clean generation facilities and states not covered by one of the existing APX-powered, regional systems. All market participants are able to take advantage of a trusted infrastructure to help manage their role in the market. With the ability to create unique, serialized records

74

Multiple-energy Techniques in Industrial Computerized Tomography  

DOE R&D Accomplishments [OSTI]

Considerable effort is being applied to develop multiple-energy industrial CT techniques for materials characterization. Multiple-energy CT can provide reliable estimates of effective Z (Z{sub eff}), weight fraction, and rigorous calculations of absolute density, all at the spatial resolution of the scanner. Currently, a wide variety of techniques exist for CT scanners, but each has certain problems and limitations. Ultimately, the best multi-energy CT technique would combine the qualities of accuracy, reliability, and wide range of application, and would require the smallest number of additional measurements. We have developed techniques for calculating material properties of industrial objects that differ somewhat from currently used methods. In this paper, we present our methods for calculating Z{sub eff}, weight fraction, and density. We begin with the simplest case -- methods for multiple-energy CT using isotopic sources -- and proceed to multiple-energy work with x-ray machine sources. The methods discussed here are illustrated on CT scans of PBX-9502 high explosives, a lexan-aluminum phantom, and a cylinder of glass beads used in a preliminary study to determine if CT can resolve three phases: air, water, and a high-Z oil. In the CT project at LLNL, we have constructed several CT scanners of varying scanning geometries using {gamma}- and x-ray sources. In our research, we employed two of these scanners: pencil-beam CAT for CT data using isotopic sources and video-CAT equipped with an IRT micro-focal x-ray machine source.

Schneberk, D.; Martz, H.; Azevedo, S.

1990-08-01T23:59:59.000Z

75

Will multiple probes of dark energy find modified gravity?  

SciTech Connect (OSTI)

One of the most pressing issues in cosmology is whether general relativity (GR) plus a dark sector is the underlying physical theory or whether a modified gravity model is needed. Upcoming dark energy experiments designed to probe dark energy with multiple methods can address this question by comparing the results of the different methods in constraining dark energy parameters. Disagreement would signal the breakdown of the assumed model (GR plus dark energy). We study the power of this consistency test by projecting constraints in the w{sub 0}-w{sub a} plane from the four different techniques of the Dark Energy Survey in the event that the underlying true model is modified gravity. We find that the standard technique of looking for overlap has some shortcomings, and we propose an alternative, more powerful Multidimensional Consistency Test. We introduce the methodology for projecting whether a given experiment will be able to use this test to distinguish a modified gravity model from GR.

Shapiro, Charles [Institute of Cosmology and Gravitation, Portsmouth, PO1 3FX (United Kingdom); Dodelson, Scott [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637 (United States); Kavli Institute for Cosmological Physics, Chicago, Illinois 60637 (United States); Hoyle, Ben [Institut de Ciencies del Cosmos, Barcelona (Spain); Samushia, Lado [Institute of Cosmology and Gravitation, Portsmouth, PO1 3FX (United Kingdom); National Abastumani Astrophysical Observatory, Ilia State University, 2A Kazbegi Ave, GE-0160 Tbilisi (Georgia); Flaugher, Brenna [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)

2010-08-15T23:59:59.000Z

76

Will multiple probes of dark energy find modified gravity?  

Science Journals Connector (OSTI)

One of the most pressing issues in cosmology is whether general relativity (GR) plus a dark sector is the underlying physical theory or whether a modified gravity model is needed. Upcoming dark energy experiments designed to probe dark energy with multiple methods can address this question by comparing the results of the different methods in constraining dark energy parameters. Disagreement would signal the breakdown of the assumed model (GR plus dark energy). We study the power of this consistency test by projecting constraints in the w0-wa plane from the four different techniques of the Dark Energy Survey in the event that the underlying true model is modified gravity. We find that the standard technique of looking for overlap has some shortcomings, and we propose an alternative, more powerful Multidimensional Consistency Test. We introduce the methodology for projecting whether a given experiment will be able to use this test to distinguish a modified gravity model from GR.

Charles Shapiro; Scott Dodelson; Ben Hoyle; Lado Samushia; Brenna Flaugher

2010-08-17T23:59:59.000Z

77

Multiple Compressions in the Middle Energy Plasma Focus Device  

Science Journals Connector (OSTI)

This paper reports some of the results that are aimed to investigate the neutron emission from the middle energy Mather?type plasma focus. These results indicated that with increase the pressure compression time is increase but there is not any direct relation between the compression time and neutron yield. Also it seems that multiple compression regimes is occurred in low pressure and single compression is appeared at higher pressure where is the favorable to neutron production.

H. R. Yousefi; Y. Ejiri; H. Ito; K. Masugata

2006-01-01T23:59:59.000Z

78

On the Energy Benefit of Network Coding for Wireless Multiple Unicast  

E-Print Network [OSTI]

} a wireless multiple unicast configuration. We measure energy consumption by the total energy re- quired ratio of the energy consumption of routing to the energy consumption of network coding, where C minimum energy consumption o

Boucherie, Richard J.

79

Muon multiplicity at high energy proton-nuclei collisions  

E-Print Network [OSTI]

Estimation of multiplicity of muons and pions production at high energy proton-nuclei collisions is given. Both QED and QCD contributions are considered for peripheral kinematics of muon pair and $\\sigma$-meson production, keeping in mind it's final conversion to muons. An attempt to explain the excess of positive charged muons compared to negative one in cosmic muon showers is given. We derive the dependence of cross-section of $n$ pairs as a function of $n$ at large n as $d^n(n!n^2)^{-1}$.

E. A. Kuraev; S. Bakmaev; V. Bytev; E. Kokoulina

2007-06-29T23:59:59.000Z

80

Chapter 2 - Coal as Multiple Sources of Energy  

Science Journals Connector (OSTI)

Abstract Coal as multiple sources of energy is mined for its solid and gas-, oil-, and condensate-derived hydrocarbons as well as liquefied for synfuels. More than 50 countries mine coal as feedstock for power plants to generate electricity but only six of these countries monopolize 73% of the total recoverable coalbed gas resources of the world. Worldwide, about 30,000 coal mine explosions are caused by methane and carbon dioxide, and to prevent outbursts and emissions, underground, surface, and abandoned coalmine gases are exploited for industrial and commercial uses. Still, a large volume of unrecovered fugitive coalmine gases is released as global greenhouse gas emissions. An alternative source for foreign oil dependent countries is synfuels from coal liquefaction technology. Also, coal-derived hydrocarbons are a part of the conventional resources that is, gas, oil, and condensate sourced from coal but expelled into adjoining reservoirs, are attractive alternative energy sources.

Romeo M. Flores

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

TECHNICAL AND ECONOMIC ASSESSMENT OF TRANSITION STRATEGIES TOWARD WIDESPREAD USE OF HYDROGEN AS AN ENERGY CARRIER  

E-Print Network [OSTI]

GIS database required to do the cost study for natural gas and coal-GIS data of existing energy infrastructure (e.g. , coal-GIS database required to do the cost study for natural gas and coal-

Ogden, J; Yang, Christopher; Johnson, Nils; Ni, Jason; Lin, Zhenhong

2005-01-01T23:59:59.000Z

82

Technical and Economic Assessment of Transition Strategies Toward Widespread Use of Hydrogen as an Energy Carrier  

E-Print Network [OSTI]

GIS database required to do the cost study for natural gas and coal-GIS data of existing energy infrastructure (e.g. , coal-GIS database required to do the cost study for natural gas and coal-

Ogden, Joan M; Yang, Christopher; Johnson, Nils; Ni, Jason; Lin, Zhenhong

2005-01-01T23:59:59.000Z

83

Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process...  

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

Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process Regenerable Mixed Copper-Iron-Inert Support Oxygen Carriers National Energy Technology Laboratory Contact NETL...

84

Graphene, a material for high temperature devices intrinsic carrier density, carrier  

E-Print Network [OSTI]

Graphene, a material for high temperature devices ­ intrinsic carrier density, carrier drift 3.87 3 106 cm22 K22 ?T2 ), carrier drift velocity, and G mode phonon energy of graphene devices and their temperature dependencies up to 2400 K. Our results show intrinsic carrier density of graphene is an order

Wang, Wei Hua

85

R.H. Williams, Decarbonized fossil energy carriers and their energy technological competitors, prepared for the IPCC Workshop on Carbon Capture and Storage, Regina, Saskatchewan, Canada, 18-21 November 2002 (1/22/03).  

E-Print Network [OSTI]

= higher heating value NGCC = natural gas combined cycle CAES = compressed air energy storage ICER.H. Williams, Decarbonized fossil energy carriers and their energy technological competitors, prepared for the IPCC Workshop on Carbon Capture and Storage, Regina, Saskatchewan, Canada, 18-21 November

86

Energy Efficient Control of a Boosting System with Multiple Variable-Speed Pumps in Parallel  

E-Print Network [OSTI]

with multiple variable-speed pumps in parallel is to minimize the pump system energy consumption by controlEnergy Efficient Control of a Boosting System with Multiple Variable-Speed Pumps in Parallel Zhenyu. The experimental results show a huge potential to improve the energy efficiency of multi-pump systems using

Yang, Zhenyu

87

Carrier Density and Compensation in Semiconductors with Multi Dopants and Multi Transition Energy Levels: The Case of Cu Impurity in CdTe: Preprint  

SciTech Connect (OSTI)

Doping is one of the most important issues in semiconductor physics. The charge carrier generated by doping can profoundly change the properties of semiconductors and their performance in optoelectronic device applications, such as solar cells. Using detailed balance theory and first-principles calculated defect formation energies and transition energy levels, we derive general formulae to calculate carrier density for semiconductors with multi dopants and multi transition energy levels. As an example, we studied CdTe doped with Cu, in which VCd, CuCd, and Cui are the dominant defects/impurities. We show that in this system, when Cu concentration increases, the doping properties of the system can change from a poor p-type, to a poorer p-type, to a better p-type, and then to a poor p-type again, in good agreement with experimental observation of CdTe-based solar cells.

Wei, S. H.; Ma, J.; Gessert, T. A.; Chin, K. K.

2011-07-01T23:59:59.000Z

88

U-104: Adobe Flash Player Multiple Vulnerabilities | Department of Energy  

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

4: Adobe Flash Player Multiple Vulnerabilities 4: Adobe Flash Player Multiple Vulnerabilities U-104: Adobe Flash Player Multiple Vulnerabilities February 16, 2012 - 6:30am Addthis PROBLEM: Adobe Flash Player Multiple Vulnerabilities PLATFORM: Adobe Flash Player versions 11.1.102.55 and prior for Windows, Macintosh, Linux, and Solaris Adobe Flash Player versions 11.1.112.61 and prior for Android 4.x Adobe Flash Player versions 11.1.111.5 and prior for Android 3.x and prior ABSTRACT: Multiple vulnerabilities have been reported in Adobe Flash Player, which can be exploited by malicious people to conduct cross-site scripting attacks, bypass certain security restrictions, and compromise a user's system. reference LINKS: Adobe Security Bulletin Secunia Advisory 48033 IMPACT ASSESSMENT: High Discussion: Multiple vulnerabilities have been reported in Adobe Flash Player, which

89

U-249: Google Chrome Multiple Vulnerabilities | Department of Energy  

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

49: Google Chrome Multiple Vulnerabilities 49: Google Chrome Multiple Vulnerabilities U-249: Google Chrome Multiple Vulnerabilities August 31, 2012 - 6:00am Addthis PROBLEM: Google Chrome Multiple Vulnerabilities PLATFORM: Google Chrome 21.x ABSTRACT: Multiple vulnerabilities have been reported in Google Chrome. reference LINKS: Secunia Advisory SA50447 Stable Channel Update CVE-2012-2865 CVE-2012-2866 CVE-2012-2867 CVE-2012-2868 CVE-2012-2869 CVE-2012-2870 CVE-2012-2871 CVE-2012-2872 IMPACT ASSESSMENT: High Discussion: Multiple vulnerabilities have been reported in Google Chrome, where some have an unknown impact and others can be exploited by malicious people to conduct cross-site scripting attacks and compromise a user's system. 1) An out-of-bounds read error exists when handling line breaks. 2) A bad cast error exists within run-ins.

90

V-121: Google Chrome Multiple Vulnerabilities | Department of Energy  

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

1: Google Chrome Multiple Vulnerabilities 1: Google Chrome Multiple Vulnerabilities V-121: Google Chrome Multiple Vulnerabilities March 28, 2013 - 12:29am Addthis PROBLEM: Google Chrome Multiple Vulnerabilities PLATFORM: versions prior to 26.0.1410.43. ABSTRACT: Multiple vulnerabilities have been reported in Google Chrome REFERENCE LINKS: Secunia Advisory SA52761 CVE-2013-0916 CVE-2013-0917 CVE-2013-0918 CVE-2013-0919 CVE-2013-0920 CVE-2013-0921 CVE-2013-0922 CVE-2013-0923 CVE-2013-0924 CVE-2013-0925 CVE-2013-0926 IMPACT ASSESSMENT: High DISCUSSION: Multiple vulnerabilities have been reported in Google Chrome, where one has an unknown impact and others can be exploited by malicious people to bypass certain security restrictions and compromise a user's system. IMPACT: 1) A use-after-free error exists in Web Audio.

91

V-105: Google Chrome Multiple Vulnerabilities | Department of Energy  

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

5: Google Chrome Multiple Vulnerabilities 5: Google Chrome Multiple Vulnerabilities V-105: Google Chrome Multiple Vulnerabilities March 6, 2013 - 12:09am Addthis PROBLEM: Google Chrome Multiple Vulnerabilities PLATFORM: Google Chrome prior to 25.0.1364.152. ABSTRACT: Multiple vulnerabilities have been reported in Google Chrome REFERENCE LINKS: Stable Channel Update Secunia Advisory SA52454 CVE-2013-0902 CVE-2013-0903 CVE-2013-0904 CVE-2013-0905 CVE-2013-0906 CVE-2013-0907 CVE-2013-0908 CVE-2013-0909 CVE-2013-0910 CVE-2013-0911 IMPACT ASSESSMENT: High DISCUSSION: Multiple vulnerabilities in Google Chrome may have an unknown impact and others can be exploited by malicious people to compromise a user's system. 1) A use-after-free error exists in frame loader. 2) A use-after-free error exists in browser navigation handling.

92

Energy-Efficient Multiple Routing Trees for Aggregate Query Evaluation in Sensor Networks  

E-Print Network [OSTI]

Energy-Efficient Multiple Routing Trees for Aggregate Query Evaluation in Sensor Networks Yuzhen is of paramount importance. Energy-efficient routing trees built for in-network pro- cessing play a central role multiple routing trees in sensor networks for the evaluation of a class of aggre- gate queries including

Liang, Weifa

93

Department of Energy, Indefinite Delivery Indefinite Quantity, Multiple Award, Energy Savings Performance  

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

2 DE-AM36-09GO290XX / Mod 6 2 DE-AM36-09GO290XX / Mod 6 Department of Energy, Indefinite Delivery Indefinite Quantity, Multiple Award, Energy Savings Performance Contract Awarded by the Department of Energy, Golden Field Office to 16 Energy Service Companies (ESCOs) on December 17, 2008 What follows is a generic version of the contract. All 16 contracts are identical with the exception of the SF33, Solicitation, Offer and Award, and Attachment J-13, Subcontracting Plan, which are specific to each ESCO. This is a conformed version of the contract as of November 2012, through modification 6, excluding contractor specific modifications for novations and name changes." 1 NEGOTIATED (RFP) November 2012 DE-AM36-09GO290XX / Mod 6 SOLICITATION, OFFER, AND AWARD 1. THIS CONTRACT IS A RATED ORDER

94

Department of Energy, Indefinite Delivery Indefinite Quantity, Multiple Award, Energy Savings Performance  

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

DE-AM36-09GO290XX / Mod 6 DE-AM36-09GO290XX / Mod 6 Department of Energy, Indefinite Delivery Indefinite Quantity, Multiple Award, Energy Savings Performance Contract Awarded by the Department of Energy, Golden Field Office to 16 Energy Service Companies (ESCOs) on December 17, 2008 What follows is a generic version of the contract. All 16 contracts are identical with the exception of the SF33, Solicitation, Offer and Award, and Attachment J-13, Subcontracting Plan, which are specific to each ESCO. This is a conformed version of the contract as of November 2012, through modification 6, excluding contractor specific modifications for novations and name changes." 1 NEGOTIATED (RFP) November 2012 DE-AM36-09GO290XX / Mod 6 SOLICITATION, OFFER, AND AWARD 1. THIS CONTRACT IS A RATED ORDER

95

V-059: MoinMoin Multiple Vulnerabilities | Department of Energy  

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

9: MoinMoin Multiple Vulnerabilities 9: MoinMoin Multiple Vulnerabilities V-059: MoinMoin Multiple Vulnerabilities January 1, 2013 - 5:57am Addthis PROBLEM: MoinMoin Multiple Vulnerabilities PLATFORM: Version(s): MoinMoin 1.x ABSTRACT: Multiple vulnerabilities have been reported in MoinMoin, which can be exploited by malicious users to conduct script insertion attacks and compromise a vulnerable system and by malicious people to manipulate certain data. REFERENCE LINKS: Secunia Advisory SA51663 CVE-2012-6080 CVE-2012-6081 CVE-2012-6082 IMPACT ASSESSMENT: High DISCUSSION: 1) Certain input when handling the AttachFile action is not properly verified before being used to write files. This can be exploited to overwrite arbitrary files via directory traversal sequences. 2) The application allows the upload of files with arbitrary extensions to

96

U-100: Google Chrome Multiple Vulnerabilities | Department of Energy  

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

0: Google Chrome Multiple Vulnerabilities 0: Google Chrome Multiple Vulnerabilities U-100: Google Chrome Multiple Vulnerabilities February 10, 2012 - 7:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in Google Chrome, where some have an unknown impact and others can be exploited by malicious people to bypass certain security restrictions, manipulate certain data, and compromise a user's system. PLATFORM: Google Chrome 16.x ABSTRACT: A remote user can create a specially crafted content that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user. Reference LINKS: Google Announcements and Release Channel Secunia Advisory SA47938 Security Tracker ID 1026654 IMPACT ASSESSMENT: High Discussion: Multiple vulnerabilities have been reported in Google Chrome, where some

97

V-126: Mozilla Firefox Multiple Vulnerabilities | Department of Energy  

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

6: Mozilla Firefox Multiple Vulnerabilities 6: Mozilla Firefox Multiple Vulnerabilities V-126: Mozilla Firefox Multiple Vulnerabilities April 4, 2013 - 6:00am Addthis PROBLEM: Mozilla Firefox Multiple Vulnerabilities PLATFORM: The vulnerabilities are reported in versions prior to 20.0 ABSTRACT: Multiple vulnerabilities have been reported in Mozilla Firefox, which can be exploited by malicious, local users to gain escalated privileges and by malicious people to conduct spoofing and cross-site scripting attacks and compromise a user's system. REFERENCE LINKS: Secunia Advisory SA52770 Secunia Advisory SA52293 Mozilla Security Announcement mfsa2013-30 Mozilla Security Announcement mfsa2013-31 Mozilla Security Announcement mfsa2013-32 Mozilla Security Announcement mfsa2013-34 Mozilla Security Announcement mfsa2013-35

98

V-224: Google Chrome Multiple Vulnerabilities | Department of Energy  

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

4: Google Chrome Multiple Vulnerabilities 4: Google Chrome Multiple Vulnerabilities V-224: Google Chrome Multiple Vulnerabilities August 22, 2013 - 1:05am Addthis PROBLEM: Multiple vulnerabilities have been reported in Google Chrome, where some have an unknown impact and others can be exploited by malicious, local users to disclose potentially sensitive information and by malicious people to compromise a user's system. PLATFORM: Google Chrome 28.x ABSTRACT: The vulnerabilities are reported in versions prior to 29.0.1547.57 REFERENCE LINKS: Secunia Advisory ID: 1028921 CVE-2013-2887 CVE-2013-2900 CVE-2013-2901 CVE-2013-2902 CVE-2013-2903 CVE-2013-2904 CVE-2013-2905 IMPACT ASSESSMENT: High DISCUSSION: Multiple vulnerabilities have been reported in Google Chrome, where some have an unknown impact and others can be exploited by malicious, local users to disclose

99

U-162: Drupal Multiple Vulnerabilities | Department of Energy  

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

162: Drupal Multiple Vulnerabilities 162: Drupal Multiple Vulnerabilities U-162: Drupal Multiple Vulnerabilities May 4, 2012 - 7:00am Addthis PROBLEM: Drupal Multiple Vulnerabilities PLATFORM: The vulnerabilities are reported in 7.x versions prior to 7.13. ABSTRACT: Several vulnerabilities were reported in Drupal: Denial of Service, Access bypass, and Unvalidated form redirect reference LINKS: Security Advisory: DRUPAL-SA-CORE-2012-002 Bugtraq ID: 53359 Secunia Advisory SA49012 CVE-2012-1588 CVE-2012-1589 CVE-2012-1590 CVE-2012-1591 CVE-2012-2153 MPACT ASSESSMENT: High Discussion: A weakness, a security issue, and multiple vulnerabilities have been reported in Drupal, which can be exploited by malicious users to disclose sensitive information, bypass certain security restrictions, and cause a DoS (Denial of Service).

100

V-092: Pidgin Multiple Vulnerabilities | Department of Energy  

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

2: Pidgin Multiple Vulnerabilities 2: Pidgin Multiple Vulnerabilities V-092: Pidgin Multiple Vulnerabilities February 15, 2013 - 6:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in Pidgin PLATFORM: Vulnerabilities are reported in version 2.10.6. Prior versions may also be affected. ABSTRACT: Multiple vulnerabilities have been reported in Pidgin, which can be exploited by malicious people to manipulate certain data, cause a DoS (Denial of Service), and compromise a user's system. REFERENCE LINKS: Secunia Advisory SA52178 Pidgin CVE-2013-0271 CVE-2013-0272 CVE-2013-0273 CVE-2013-0274 IMPACT ASSESSMENT: High DISCUSSION: 1) An error within the MXit protocol plugin when saving images can be exploited to overwrite certain files. 2) A boundary error within the "mxit_cb_http_read()" function

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101

V-214: Mozilla Firefox Multiple Vulnerabilities | Department of Energy  

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

4: Mozilla Firefox Multiple Vulnerabilities 4: Mozilla Firefox Multiple Vulnerabilities V-214: Mozilla Firefox Multiple Vulnerabilities August 8, 2013 - 2:16am Addthis PROBLEM: Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 23.0 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors. PLATFORM: Mozilla Firefox 22.x ABSTRACT: The vulnerabilities are reported in versions prior to 23.0. REFERENCE LINKS: Secunia Advisory SA54418 CVE-2013-1701 CVE-2013-1702 CVE-2013-1704 CVE-2013-1705 CVE-2013-1706 CVE-2013-1707 CVE-2013-1709 CVE-2013-1710 CVE-2013-1711 CVE-2013-1713 CVE-2013-1714 CVE-2013-1717 IMPACT ASSESSMENT: High DISCUSSION: Multiple vulnerabilities have been reported in Mozilla Firefox, which can

102

V-059: MoinMoin Multiple Vulnerabilities | Department of Energy  

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

9: MoinMoin Multiple Vulnerabilities 9: MoinMoin Multiple Vulnerabilities V-059: MoinMoin Multiple Vulnerabilities January 1, 2013 - 5:57am Addthis PROBLEM: MoinMoin Multiple Vulnerabilities PLATFORM: Version(s): MoinMoin 1.x ABSTRACT: Multiple vulnerabilities have been reported in MoinMoin, which can be exploited by malicious users to conduct script insertion attacks and compromise a vulnerable system and by malicious people to manipulate certain data. REFERENCE LINKS: Secunia Advisory SA51663 CVE-2012-6080 CVE-2012-6081 CVE-2012-6082 IMPACT ASSESSMENT: High DISCUSSION: 1) Certain input when handling the AttachFile action is not properly verified before being used to write files. This can be exploited to overwrite arbitrary files via directory traversal sequences. 2) The application allows the upload of files with arbitrary extensions to

103

V-081: Wireshark Multiple Vulnerabilities | Department of Energy  

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

1: Wireshark Multiple Vulnerabilities 1: Wireshark Multiple Vulnerabilities V-081: Wireshark Multiple Vulnerabilities January 31, 2013 - 12:21am Addthis PROBLEM: Wireshark Multiple Vulnerabilities PLATFORM: The vulnerabilities are reported in versions prior to 1.8.5 and 1.6.13. ABSTRACT: Multiple vulnerabilities have been reported in Wireshark REFERENCE LINKS: Wireshark 1.8.5 Release Notes Secunia Advisory SA51968 IMPACT ASSESSMENT: High DISCUSSION: 1) Errors in the Bluetooth HCI, CSN.1, DCP-ETSI DOCSIS CM-STAUS, IEEE 802.3 Slow Protocols, MPLS, R3, RTPS, SDP, and SIP dissectors can be exploited to trigger infinite loops and consume CPU resources via specially crafted packets. 2) An error in the CLNP dissector when processing certain packets can be exploited to cause a crash via a specially crafted packet.

104

V-118: IBM Lotus Domino Multiple Vulnerabilities | Department of Energy  

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

8: IBM Lotus Domino Multiple Vulnerabilities 8: IBM Lotus Domino Multiple Vulnerabilities V-118: IBM Lotus Domino Multiple Vulnerabilities March 25, 2013 - 12:40am Addthis PROBLEM: IBM Lotus Domino Multiple Vulnerabilities PLATFORM: IBM Domino 8.x ABSTRACT: Multiple vulnerabilities have been reported in IBM Lotus Domino REFERENCE LINKS: IBM Reference #:1627597 Secunia Advisory SA52753 CVE-2012-6277 CVE-2013-0486 CVE-2013-0487 IMPACT ASSESSMENT: High DISCUSSION: 1) An unspecified error can be exploited to disclose time-limited authentication credentials via the Domino Java Console and subsequently gain otherwise restricted access. Successful exploitation may require certain knowledge of Domino server configuration. 2) An unspecified error in the HTTP server component can be exploited to cause a memory leak and subsequently crash the server.

105

V-097: Google Chrome Multiple Vulnerabilities | Department of Energy  

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

7: Google Chrome Multiple Vulnerabilities 7: Google Chrome Multiple Vulnerabilities V-097: Google Chrome Multiple Vulnerabilities February 22, 2013 - 6:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in Google Chrome PLATFORM: The vulnerabilities are reported in versions prior to Google Chrome 24.x ABSTRACT: Multiple vulnerabilities have been reported in Google Chrome, where some have an unknown impact and others can be exploited by malicious people to bypass certain security restrictions and compromise a user's system. REFERENCE LINKS: Secunia Advisory SA52320 Chrome Stable Channel Update CVE-2013-0879 CVE-2013-0880 CVE-2013-0881 CVE-2013-0882 CVE-2013-0883 CVE-2013-0884 CVE-2013-0885 CVE-2013-0886 CVE-2013-0887 CVE-2013-0888 CVE-2013-0889 CVE-2013-0890 CVE-2013-0891 CVE-2013-0892 CVE-2013-0893

106

V-081: Wireshark Multiple Vulnerabilities | Department of Energy  

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

1: Wireshark Multiple Vulnerabilities 1: Wireshark Multiple Vulnerabilities V-081: Wireshark Multiple Vulnerabilities January 31, 2013 - 12:21am Addthis PROBLEM: Wireshark Multiple Vulnerabilities PLATFORM: The vulnerabilities are reported in versions prior to 1.8.5 and 1.6.13. ABSTRACT: Multiple vulnerabilities have been reported in Wireshark REFERENCE LINKS: Wireshark 1.8.5 Release Notes Secunia Advisory SA51968 IMPACT ASSESSMENT: High DISCUSSION: 1) Errors in the Bluetooth HCI, CSN.1, DCP-ETSI DOCSIS CM-STAUS, IEEE 802.3 Slow Protocols, MPLS, R3, RTPS, SDP, and SIP dissectors can be exploited to trigger infinite loops and consume CPU resources via specially crafted packets. 2) An error in the CLNP dissector when processing certain packets can be exploited to cause a crash via a specially crafted packet.

107

V-092: Pidgin Multiple Vulnerabilities | Department of Energy  

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

2: Pidgin Multiple Vulnerabilities 2: Pidgin Multiple Vulnerabilities V-092: Pidgin Multiple Vulnerabilities February 15, 2013 - 6:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in Pidgin PLATFORM: Vulnerabilities are reported in version 2.10.6. Prior versions may also be affected. ABSTRACT: Multiple vulnerabilities have been reported in Pidgin, which can be exploited by malicious people to manipulate certain data, cause a DoS (Denial of Service), and compromise a user's system. REFERENCE LINKS: Secunia Advisory SA52178 Pidgin CVE-2013-0271 CVE-2013-0272 CVE-2013-0273 CVE-2013-0274 IMPACT ASSESSMENT: High DISCUSSION: 1) An error within the MXit protocol plugin when saving images can be exploited to overwrite certain files. 2) A boundary error within the "mxit_cb_http_read()" function

108

U-162: Drupal Multiple Vulnerabilities | Department of Energy  

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

62: Drupal Multiple Vulnerabilities 62: Drupal Multiple Vulnerabilities U-162: Drupal Multiple Vulnerabilities May 4, 2012 - 7:00am Addthis PROBLEM: Drupal Multiple Vulnerabilities PLATFORM: The vulnerabilities are reported in 7.x versions prior to 7.13. ABSTRACT: Several vulnerabilities were reported in Drupal: Denial of Service, Access bypass, and Unvalidated form redirect reference LINKS: Security Advisory: DRUPAL-SA-CORE-2012-002 Bugtraq ID: 53359 Secunia Advisory SA49012 CVE-2012-1588 CVE-2012-1589 CVE-2012-1590 CVE-2012-1591 CVE-2012-2153 MPACT ASSESSMENT: High Discussion: A weakness, a security issue, and multiple vulnerabilities have been reported in Drupal, which can be exploited by malicious users to disclose sensitive information, bypass certain security restrictions, and cause a DoS (Denial of Service).

109

Delaware River Basin Commission (Multiple States) | Department of Energy  

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

Delaware River Basin Commission (Multiple States) Delaware River Basin Commission (Multiple States) Delaware River Basin Commission (Multiple States) < Back Eligibility Utility Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Installer/Contractor Rural Electric Cooperative Tribal Government Systems Integrator Savings Category Water Buying & Making Electricity Home Weatherization Program Info Start Date 1961 State Delaware Program Type Environmental Regulations Siting and Permitting Provider Project Review Section The Delaware River Basin Commission (DRBC) is a federal-interstate compact government agency that was formed by concurrent legislation enacted in 1961 by the United States and the four basin states (Pennsylvania, New York, New

110

Energy-Efficient Antenna Selection and Power Allocation for Large-Scale Multiple Antenna  

E-Print Network [OSTI]

the BS to harvest energy from renewable energy sources such as solar, wind, and so on, can effectivelyEnergy-Efficient Antenna Selection and Power Allocation for Large-Scale Multiple Antenna Systems with Hybrid Energy Supply Zhenyu Zhou1 , Sheng Zhou2 , Jie Gong2 , and Zhisheng Niu2 1 State Key Laboratory

111

U-191: Oracle Java Multiple Vulnerabilities | Department of Energy  

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

91: Oracle Java Multiple Vulnerabilities 91: Oracle Java Multiple Vulnerabilities U-191: Oracle Java Multiple Vulnerabilities June 14, 2012 - 7:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in Oracle Java, which can be exploited by malicious local users PLATFORM: Oracle Java JDK 1.7.x / 7.x Oracle Java JRE 1.7.x / 7.x Sun Java JDK 1.5.x Sun Java JDK 1.6.x / 6.x Sun Java JRE 1.4.x Sun Java JRE 1.5.x / 5.x Sun Java JRE 1.6.x / 6.x Sun Java SDK 1.4.x ABSTRACT: The Critical Patch Update for Java SE also includes non-security fixes. Critical Patch Updates are cumulative and each advisory describes only the security fixes added since the previous Critical Patch Update. Thus, prior Critical Patch Update Advisories should be reviewed for information regarding earlier accumulated security fixes.

112

U-035: Adobe Flash Player Multiple Vulnerabilities | Department of Energy  

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

35: Adobe Flash Player Multiple Vulnerabilities 35: Adobe Flash Player Multiple Vulnerabilities U-035: Adobe Flash Player Multiple Vulnerabilities November 14, 2011 - 10:15am Addthis PROBLEM: Adobe Flash Player Multiple Vulnerabilities. PLATFORM: Adobe Flash Player 11.0.1.152 and earlier versions for Windows, Macintosh, Linux and Solaris operating systems Adobe Flash Player 11.0.1.153 and earlier versions for Android Adobe AIR 3.0 and earlier versions for Windows, Macintosh, and Android ABSTRACT: Adobe recommends users of Adobe Flash Player 11.0.1.152 and earlier versions for Windows, Macintosh, Linux and Solaris update to Adobe Flash Player 11.1.102.55. Users of Adobe Flash Player 11.0.1.153 and earlier versions for Android should update to Adobe Flash Player 11.1.102.59 for Android. Users of Adobe AIR 3.0 for Windows, Macintosh, and Android should

113

V-187: Mozilla Firefox Multiple Vulnerabilities | Department of Energy  

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

7: Mozilla Firefox Multiple Vulnerabilities 7: Mozilla Firefox Multiple Vulnerabilities V-187: Mozilla Firefox Multiple Vulnerabilities June 27, 2013 - 6:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in Mozilla Firefox PLATFORM: Mozilla Firefox 21.x ABSTRACT: These vulnerabilities can be exploited by malicious people to conduct cross-site scripting and spoofing attacks, disclose potentially sensitive information, bypass certain security restrictions, and compromise a user's system. REFERENCE LINKS: Secunia Advisory SA53970 Secunia Advisory SA53953 Mozilla Advisory mfsa2013-49 Mozilla Advisory mfsa2013-50 Mozilla Advisory mfsa2013-51 Mozilla Advisory mfsa2013-53 Mozilla Advisory mfsa2013-55 Mozilla Advisory mfsa2013-56 Mozilla Advisory mfsa2013-59 CVE-2013-1682 CVE-2013-1683 CVE-2013-1684 CVE-2013-1685

114

V-208: Google Chrome Multiple Vulnerabilities | Department of Energy  

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

8: Google Chrome Multiple Vulnerabilities 8: Google Chrome Multiple Vulnerabilities V-208: Google Chrome Multiple Vulnerabilities August 1, 2013 - 2:32am Addthis PROBLEM: Multiple unspecified vulnerabilities in Google Chrome before 28.0.1500.95 allow attackers to cause a denial of service or possibly have other impact via unknown vectors. PLATFORM: Google Chrome 28.x ABSTRACT: Some vulnerabilities have been reported in Google Chrome which allows attackers to access and compromise a user's system. REFERENCE LINKS: Secunia Advisory SA54325 CVE-2013-2881 CVE-2013-2882 CVE-2013-2883 CVE-2013-2884 CVE-2013-2885 CVE-2013-2886 IMPACT ASSESSMENT: High DISCUSSION: Several vulnerabilities have been reported in Google Chrome, where some have an unknown impact and others can be exploited by malicious people to

115

U-173: Symantec Web Gateway Multiple Vulnerabilities | Department of Energy  

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

3: Symantec Web Gateway Multiple Vulnerabilities 3: Symantec Web Gateway Multiple Vulnerabilities U-173: Symantec Web Gateway Multiple Vulnerabilities May 21, 2012 - 7:00am Addthis PROBLEM: Symantec Web Gateway Multiple Vulnerabilities PLATFORM: 5.0.x prior to 5.0.3 ABSTRACT: Several vulnerabilities were reported in Symantec Web Gateway. A remote user can include and execute arbitrary code on the target system. A remote user can conduct cross-site scripting attacks. A remote user can view/delete/upload files on the target system. Reference Links: SecurityTracker Alert ID: 1027078 CVE-2012-0296 CVE-2012-0297 CVE-2012-0298 CVE-2012-0299 IMPACT ASSESSMENT: Medium Discussion: The management interface does not properly authenticate remote users and does not properly validate user-supplied input. A remote user can cause arbitrary scripting code to be executed by the

116

U-179: IBM Java 7 Multiple Vulnerabilities | Department of Energy  

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

9: IBM Java 7 Multiple Vulnerabilities 9: IBM Java 7 Multiple Vulnerabilities U-179: IBM Java 7 Multiple Vulnerabilities May 30, 2012 - 7:00am Addthis PROBLEM: IBM has acknowledged multiple vulnerabilities in IBM Java PLATFORM: IBM Java 7.x ABSTRACT: Vulnerabilities can be exploited by malicious users to disclose certain information and by malicious people to disclose potentially sensitive information, hijack a user's session, conduct DNS cache poisoning attacks, manipulate certain data, cause a DoS (Denial of Service), and compromise a vulnerable system. Reference Links: Secunia Advisory 49333 CVE-2011-3389 Vendor Advisory IMPACT ASSESSMENT: High Discussion: IBM released a patch to address vulerabilities in IBM Java 7. IBM 7 SR1 is available for download. Impact: Hijacking Manipulation of data Exposure of sensitive information

117

T-540: Sybase EAServer Multiple Vulnerabilities | Department of Energy  

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

40: Sybase EAServer Multiple Vulnerabilities 40: Sybase EAServer Multiple Vulnerabilities T-540: Sybase EAServer Multiple Vulnerabilities January 24, 2011 - 6:16am Addthis PROBLEM: Sybase EAServer Multiple Vulnerabilities PLATFORM: Sybase EAServer versions 6.3 and prior ABSTRACT: Sybase EAServer is prone to a security-bypass vulnerability and a directory-traversal vulnerability. Attackers may exploit these issues to execute arbitrary code within the context of the application or to disclose sensitive information. Sybase EAServer versions 6.3 and prior are affected. reference LINKS: Bugtraq ID: 45809 SyBase Advisory IMPACT ASSESSMENT: Medium Discussion: Remote exploitation of a design vulnerability in Sybase EAServer could allow an attacker to install arbitrary web services, this condition can result in arbitrary code execution allowing attacker to gain control over

118

U-187: Adobe Flash Player Multiple Vulnerabilities | Department of Energy  

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

7: Adobe Flash Player Multiple Vulnerabilities 7: Adobe Flash Player Multiple Vulnerabilities U-187: Adobe Flash Player Multiple Vulnerabilities June 11, 2012 - 7:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in Adobe Flash Player PLATFORM: Adobe Flash Player 11.2.202.235 and earlier for Windows, Macintosh and Linux Adobe Flash Player 11.1.115.8 and earlier for Android 4.x Adobe Flash Player 11.1.111.9 and earlier for Android 3.x and 2.x Adobe AIR 3.2.0.2070 and earlier for Windows, Macintosh and Android ABSTRACT: Adobe released security updates for Adobe Flash Player 11.2.202.235 and earlier versions for Windows, Macintosh and Linux, Adobe Flash Player 11.1.115.8 and earlier versions for Android 4.x, and Adobe Flash Player 11.1.111.9 and earlier versions for Android 3.x and 2.x. These updates

119

U-179: IBM Java 7 Multiple Vulnerabilities | Department of Energy  

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

9: IBM Java 7 Multiple Vulnerabilities 9: IBM Java 7 Multiple Vulnerabilities U-179: IBM Java 7 Multiple Vulnerabilities May 30, 2012 - 7:00am Addthis PROBLEM: IBM has acknowledged multiple vulnerabilities in IBM Java PLATFORM: IBM Java 7.x ABSTRACT: Vulnerabilities can be exploited by malicious users to disclose certain information and by malicious people to disclose potentially sensitive information, hijack a user's session, conduct DNS cache poisoning attacks, manipulate certain data, cause a DoS (Denial of Service), and compromise a vulnerable system. Reference Links: Secunia Advisory 49333 CVE-2011-3389 Vendor Advisory IMPACT ASSESSMENT: High Discussion: IBM released a patch to address vulerabilities in IBM Java 7. IBM 7 SR1 is available for download. Impact: Hijacking Manipulation of data Exposure of sensitive information

120

Carrier dynamics and activation energy of CdTe quantum dots in a Cd{sub x}Zn{sub 1-x}Te quantum well  

SciTech Connect (OSTI)

We investigate the optical properties of CdTe quantum dots (QDs) in a Cd{sub 0.3}Zn{sub 0.7}Te quantum well (QW) grown on GaAs (100) substrates. Carrier dynamics of CdTe/ZnTe QDs and quantum dots-in-a-well (DWELL) structure is studied using time-resolved photoluminescence (PL) measurements, which show the longer exciton lifetime of the DWELL structure. The activation energy of the electrons confined in the DWELL structure, as obtained from the temperature-dependent PL spectra, was also higher than that of electrons confined in the CdTe/ZnTe QDs. This behavior is attributed to the better capture of carriers into QDs within the surrounding QW.

Han, W. I.; Lee, J. H.; Yu, J. S.; Choi, J. C. [Department of Physics, Yonsei University, Wonju 220-710 (Korea, Republic of); Lee, H. S. [Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of)

2011-12-05T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

V-083: Oracle Java Multiple Vulnerabilities | Department of Energy  

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

3: Oracle Java Multiple Vulnerabilities 3: Oracle Java Multiple Vulnerabilities V-083: Oracle Java Multiple Vulnerabilities February 4, 2013 - 12:42am Addthis PROBLEM: Oracle Java Multiple Vulnerabilities PLATFORM: Oracle Java JDK 1.5.x / 5.x Oracle Java JDK 1.7.x / 7.x Oracle Java JRE 1.7.x / 7.x Oracle Java SDK 1.4.x / 4.x Sun Java JDK 1.4.x Sun Java JDK 1.6.x / 6.x Sun Java JRE 1.4.x / 4.x Sun Java JRE 1.5.x / 5.x Sun Java JRE 1.6.x / 6.x ABSTRACT: A Critical Patch Update is a collection of patches for multiple security vulnerabilities. The Critical Patch Update for Java SE also includes non-security fixes. Critical Patch Updates are cumulative and each advisory describes only the security fixes added since the previous Critical Patch Update and Security Alert. REFERENCE LINKS: Oracle Security Advisory February 2013

122

V-083: Oracle Java Multiple Vulnerabilities | Department of Energy  

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

3: Oracle Java Multiple Vulnerabilities 3: Oracle Java Multiple Vulnerabilities V-083: Oracle Java Multiple Vulnerabilities February 4, 2013 - 12:42am Addthis PROBLEM: Oracle Java Multiple Vulnerabilities PLATFORM: Oracle Java JDK 1.5.x / 5.x Oracle Java JDK 1.7.x / 7.x Oracle Java JRE 1.7.x / 7.x Oracle Java SDK 1.4.x / 4.x Sun Java JDK 1.4.x Sun Java JDK 1.6.x / 6.x Sun Java JRE 1.4.x / 4.x Sun Java JRE 1.5.x / 5.x Sun Java JRE 1.6.x / 6.x ABSTRACT: A Critical Patch Update is a collection of patches for multiple security vulnerabilities. The Critical Patch Update for Java SE also includes non-security fixes. Critical Patch Updates are cumulative and each advisory describes only the security fixes added since the previous Critical Patch Update and Security Alert. REFERENCE LINKS: Oracle Security Advisory February 2013

123

V-051: Oracle Solaris Java Multiple Vulnerabilities | Department of Energy  

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

1: Oracle Solaris Java Multiple Vulnerabilities 1: Oracle Solaris Java Multiple Vulnerabilities V-051: Oracle Solaris Java Multiple Vulnerabilities December 20, 2012 - 12:15am Addthis PROBLEM: Oracle Solaris Java Multiple Vulnerabilities PLATFORM: Oracle Solaris 11.x ABSTRACT: Oracle has acknowledged multiple vulnerabilities in Java included in Solaris REFERENCE LINKS: Secunia Advisory: SA51618 Secunia Advisory: SA50949 Third Party Vulnerability Resolution Blog in Java 7U9 Third Party Vulnerability Resolution Blog in Java 6U37 CVE-2012-1531 CVE-2012-1532 CVE-2012-1533 CVE-2012-3143 CVE-2012-3159 CVE-2012-3216 CVE-2012-4416 CVE-2012-5067 CVE-2012-5068 CVE-2012-5069 CVE-2012-5070 CVE-2012-5071 CVE-2012-5072 CVE-2012-5073 CVE-2012-5074 CVE-2012-5075 CVE-2012-5076 CVE-2012-5077 CVE-2012-5079 CVE-2012-5081 CVE-2012-5083 CVE-2012-5084

124

New England Power Pool (Multiple States) | Department of Energy  

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

England Power Pool (Multiple States) England Power Pool (Multiple States) New England Power Pool (Multiple States) < Back Eligibility Developer Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Maine Program Type Interconnection Independent System Operator (ISO) New England helps protect the health of New England's economy and the well-being of its people by ensuring the constant availability of electricity, today and for future generations. ISO New England meets this obligation in three ways: by ensuring the day-to-day reliable operation of New England's bulk power generation and transmission system, by overseeing and ensuring the fair administration of the region's wholesale electricity markets, and by managing comprehensive, regional

125

T-657: Drupal Prepopulate - Multiple vulnerabilities | Department of Energy  

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

7: Drupal Prepopulate - Multiple vulnerabilities 7: Drupal Prepopulate - Multiple vulnerabilities T-657: Drupal Prepopulate - Multiple vulnerabilities June 29, 2011 - 3:34pm Addthis PROBLEM: Prepopulate module enables pre-populating forms in Drupal using the $_REQUEST vairable. PLATFORM: Prepopulate module for Drupal 6.x versions prior to 6.x-2.2 ABSTRACT: The module does not adequately validate user input leading to an cross-site scripting (XSS) possibility in certain circumstances. reference LINKS: Advisory ID: DRUPAL-SA-CONTRIB-2011-023 Prepopulate module Prepopulate 6.x-2.2 Update IMPACT ASSESSMENT: High Discussion: The Prepopulate module enables pre-populating forms in Drupal using the $_REQUEST vairable. The module does not adequately validate user input leading to an cross-site scripting (XSS) possibility in certain circumstances. Users privileged to

126

Sabine River Compact (Multiple States) | Department of Energy  

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

Sabine River Compact (Multiple States) Sabine River Compact (Multiple States) Sabine River Compact (Multiple States) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Savings Category Water Buying & Making Electricity Home Weatherization Program Info State Texas Program Type Siting and Permitting Provider Sabine River Compact Commission The Sabine River Compact Commission administers the Sabine River Compact to ensure that Texas receives its equitable share of quality water from the

127

Project Profile: CSP Energy Storage Solutions — Multiple Technologies Compared  

Broader source: Energy.gov [DOE]

US Solar Holdings, under the Thermal Storage FOA, is aiming to demonstrate commercial, utility-scale thermal energy storage technologies and provide a path to cost-effective energy storage for CSP plants >50 MW.

128

Clique-Based Randomized Multiple Access for Energy-Efficient Wireless Ad Hoc Networks  

E-Print Network [OSTI]

Clique-Based Randomized Multiple Access for Energy-Efficient Wireless Ad Hoc Networks Paul G protocol design for wireless ad hoc networks is between proactive and reactive coor- dination, where describe Clique-Based Randomized Multiple Access (CRMA), a distributed MAC protocol for wireless ad hoc

129

Performance-Energy Tradeoffs for Matrix Multiplication on FPGA-Based Mixed-Mode Chip Multiprocessors  

E-Print Network [OSTI]

1 Performance-Energy Tradeoffs for Matrix Multiplication on FPGA-Based Mixed-Mode Chip presents our performance and energy study on an in-house developed FPGA- based mixed-mode chip approach in microprocessor design. With ever increasing concerns for energy consumption, performance

Ziavras, Sotirios G.

130

Controlling energy transfer between multiple dopants within a single nanoparticle  

Science Journals Connector (OSTI)

...low vibrational energy. Because of such...in LEDs (1), solar cell energy conversion (2...use of NPs has an advantage over the glass-ceramic...low vibrational energies, high thermal and chemical...there also are some disadvantages. One has to be...

Jeffrey R. DiMaio; Clément Sabatier; Baris Kokuoz; John Ballato

2008-01-01T23:59:59.000Z

131

Hafnium nitride for hot carrier solar cells  

Science Journals Connector (OSTI)

Abstract Hot carrier solar cells is an attractive technology with the potential of reaching high energy conversion efficiencies approaching the thermodynamic limit of infinitely stacked multi-junction solar cells: 65% under one sun and 86% under maximally concentrated. The hot carrier solar cell is conceptually simple consisting of two key components: absorber and energy selective contacts. High efficiencies are achieved by minimising the energy lost to thermalisaton of hot photo-generated carriers while absorbing majority of the solar spectrum. For this to be achieved, energy selective contacts are required to allow the extraction of carriers fast enough at an energy level above the electronic band edge. It is critical for the absorber to be able to maintain a hot carrier population for a sufficiently long time period for the extraction of carriers while they are ‘hot’. Bulk materials with a large gap between acoustic and optical branches in the phonon dispersion are predicted to exhibit slow hot carrier thermalisation rates. Hafnium nitride is such a material with a large gap in its phonon dispersion and is identified as a potential material to be used as a hot carrier absorber. Hafnium nitride has been deposited using reactive sputtering and characterised to investigate material properties and carrier cooling rates.

Simon Chung; Santosh Shrestha; Xiaoming Wen; Yu Feng; Neeti Gupta; Hongze Xia; Pyng Yu; Jau Tang; Gavin Conibeer

2014-01-01T23:59:59.000Z

132

Hybrid cell for harvesting multiple-type energies.  

E-Print Network [OSTI]

??An abundance of energy in our environment exists in the form of light, thermal, mechanical (e.g., vibration, sonic waves, wind, and hydraulic), magnetic, chemical, and… (more)

Xu, Chen

2012-01-01T23:59:59.000Z

133

Multiple-junction quantum cascade photodetectors for thermophotovoltaic energy conversion  

Science Journals Connector (OSTI)

The use of intersubband transitions in quantum cascade structures for thermophotovoltaic energy conversion is investigated numerically. The intrinsic cascading scheme, spectral...

Yin, Jian; Paiella, Roberto

2010-01-01T23:59:59.000Z

134

Interactions of Multiple Market-Based Energy and Environmental Policies  

E-Print Network [OSTI]

, and integration of a smart grid that allows for demand response. These challenges need to be met while maintaining-Based Energy and Environmental Policies in a Transmission- Constrained Competitive National Electricity Market provided by PSERC's industry members, by the Department of Energy CERTS program and by the National Science

135

Multiple-pion production by high-energy muons  

Science Journals Connector (OSTI)

By the use of two cloud chambers containing lead plates and iron plates, we observed 133 events of the penetrating showers produced by muons in the energy range from about 10 GeV to a ... . The behaviours of the ...

S. Higashi; T. Kitamura; Y. Mishima; S. Miyamoto; Y. Watase…

1965-01-01T23:59:59.000Z

136

An Electricity Trade Model for Multiple Power Distribution Networks in Smart Energy Systems  

E-Print Network [OSTI]

An Electricity Trade Model for Multiple Power Distribution Networks in Smart Energy Systems-interactive [1]-[3]. In order to switch from a centralized power distribution network (in which electrical energy Tiansong Cui, Yanzhi Wang, Shahin Nazarian, and Massoud Pedram Department of Electrical Engineering

Pedram, Massoud

137

Energy Efficient Datapath Scheduling using Multiple Voltages and Dynamic Clocking  

E-Print Network [OSTI]

, such as [Pedram 1996], demand of portable systems (battery life), thermal considerations (cooling and packaging consumption of a device has to be minimum to increase battery life, the energy-delay- product has to be minimized to increase battery life and to reduce delay, simultaneously. Let us consider the following

Mohanty, Saraju P.

138

File:BOEMRE atlantic.OCS.multiple.use.map.2003.pdf | Open Energy  

Open Energy Info (EERE)

atlantic.OCS.multiple.use.map.2003.pdf atlantic.OCS.multiple.use.map.2003.pdf Jump to: navigation, search File File history File usage Multiple Uses of the Atlantic Outer Continental Shelf Size of this preview: 550 × 600 pixels. Full resolution ‎(4,958 × 5,408 pixels, file size: 3.06 MB, MIME type: application/pdf) Description Multiple Uses of the Atlantic Outer Continental Shelf Sources Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE) Related Technologies Offshore wind Creation Date 2003-10 Extent Northeast coast of US Countries United States UN Region Northern America States Maryland, Delaware, New Jersey, New York, Connecticut, Rhode Island, Massachusetts Map published in October 2003 by the BOEMRE illustrating multiple uses of the outer continental shelf of the Atlantic Ocean, in the region between

139

High-energy average charged multiplicities from nuclei in a Regge-calculus model  

Science Journals Connector (OSTI)

Lehman and Winbow have used a Gribov Reggeon-calculus approach to derive expressions for average charge multiplicities in high-energy scattering off nuclei. They find the multiplicity to be n=bY+f(A), where b is independent of A. We show that a reasonable modification of their model yields n=b?A13Y+g(A), where b? is known. We find that this expression agrees with experimental data on dndY (where Y=lns) better than that of Lehman and Winbow, and agrees as well as the energy flux model of Gottfried.

R. T. Cutler and Dale R. Snider

1976-03-01T23:59:59.000Z

140

AltaRock Energy Announces Successful Multiple-Zone Stimulation of Well at the Newberry Enhanced Geothermal Systems Demonstration  

Broader source: Energy.gov [DOE]

AltaRock Energy today announced that it has created multiple stimulated zones from a single wellbore at the Newberry Enhanced Geothermal System (EGS) Demonstration site.

Note: This page contains sample records for the topic "multiple energy carriers" 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

Are multiple parton interactions important at high energies? New types of hadrons production processes  

E-Print Network [OSTI]

Hadrons interaction at high energies is carried out by one color gluon exchange. All quarks and gluons contained in colliding hadrons take part in interaction and production of particles. The contribution of multiple parton interactions is negligible. Multiple hadrons production at high energies occurs only in three types of processes. The first process is hadrons production in gluon string, the second is hadrons production in two quark strings and the third is hadrons production in three quark strings. In proton-proton interaction production of only gluon string and two quark strings is possible. In proton-antiproton interaction production of gluon string, two quark strings and three quark strings is possible. Therefore multiplicity distributions in proton-proton and proton-antiproton interactions are different.

V. A. Abramovsky

2009-11-25T23:59:59.000Z

142

High energy density micro plasma bunch from multiple laser interaction with thin target  

SciTech Connect (OSTI)

Three-dimensional particle-in-cell simulation is used to investigate radiation-pressure driven acceleration and compression of small solid-density plasma by intense laser pulses. It is found that multiple impacts by presently available short-pulse lasers on a small hemispheric shell target can create a long-living tiny quasineutral monoenergetic plasma bunch of very high energy density.

Xu, Han [National Laboratory for Parallel and Distributed Processing, College of Computer Science, National University of Defense Technology, Changsha 410073 (China); Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 (China); Yu, Wei; Luan, S. X.; Xu, Z. Z. [Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 (China); Yu, M. Y., E-mail: myyu@zju.edu.cn [Physics Department, Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Institute for Theoretical Physics I, Ruhr University, Bochum D-44780 (Germany); Cai, H. B.; Zhou, C. T. [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Yang, X. H.; Yin, Y.; Zhuo, H. B. [College of Science, National University of Defense Technology, Changsha (China); Wang, J. W. [Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 (China); Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan); Murakami, M. [Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan)

2014-01-13T23:59:59.000Z

143

CAD of Microwave Chemistry Reactors with Energy Efficiency Optimized for Multiple Reactants  

E-Print Network [OSTI]

CAD of Microwave Chemistry Reactors with Energy Efficiency Optimized for Multiple Reactants Ethan K for additional practically important condition requiring the reactor's optimal design for different reactants reactor for 3 different materials: with 1/5 liter reactants, seven-parameter optimization yields the best

Yakovlev, Vadim

144

Determination of energy thresholds on an artificial retina using a multiple-pulsed laser  

E-Print Network [OSTI]

This study is focused on determining single and multiple pulse ED?? for laser pulses of 200 ns duration. Energy thresholds in this experiment were determined on an artificial retina, for a variety of pulse widths and spot sizes. Due to numerous...

Stephenson, Albert David

2012-06-07T23:59:59.000Z

145

Charged Particle and Photon Multiplicity, and Transverse Energy Production in High-Energy Heavy-Ion Collisions  

E-Print Network [OSTI]

We review the charged particle and photon multiplicity, and transverse energy production in heavy-ion collisions starting from few GeV to TeV energies. The experimental results of pseudorapidity distribution of charged particles and photons at different collision energies and centralities are discussed. We also discuss the hypothesis of limiting fragmentation and expansion dynamics using the Landau hydrodynamics and the underlying physics. Meanwhile, we present the estimation of initial energy density multiplied with formation time as a function of different collision energies and centralities. In the end, the transverse energy per charged particle in connection with the chemical freeze-out criteria is discussed. We invoke various models and phenomenological arguments to interpret and characterize the fireball created in heavy-ion collisions. This review overall provides a scope to understand the heavy-ion collision data and a possible formation of a deconfined phase of partons via the global observables like...

Sahoo, Raghunath; Behera, Nirbhay K; Nandi, Basanta K

2014-01-01T23:59:59.000Z

146

Energy Consumption and Jet Multiplicity from the Leading Log BFKL Evolution  

E-Print Network [OSTI]

We study the associated jet multiplicity arising from t-channel BFKL gluon evolution in forward dijet production at hadron colliders. Previous results have shown that the effect of conserving overall energy and momentum is to introduce a pdf suppression that completely compensates the predicted exponential BFKL rise with rapidity difference between the leading dijets. However, we show that there is still expected to be a significant amount of BFKL radiation, especially in the central region, and we give predictions for the multiplicity of the resulting mini-jets at the LHC.

J. R. Andersen; W. J. Stirling

2003-01-13T23:59:59.000Z

147

Potential Carriers and Approaches for Hydrogen Delivery  

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

Carriers and Potential Carriers and Carriers and Potential Carriers and Approaches for Hydrogen Approaches for Hydrogen Delivery Delivery TIAX LLC 1601 S. D Anza Blvd. Cupertino CA, 95014 Tel. 408-517-1550 Reference: D0348 © 2007 TIAX LLC Hydrogen Delivery Analysis Meeting May 8-9, 2007 Columbia, Maryland Matthew Hooks Stefan Unnasch Stephen Lasher 1 Novel Hydrogen Carriers Project Overview Cost Density (wt. and vol.) Energy requirements Forecourt storage requirements Codes and standards H H 2 2 Plant, Liquefier, LH Plant, Liquefier, LH 2 2 storage storage H H 2 2 Tube Trailer Tube Trailer LH 2 2 Tank/ Fueling Station LH Tank/ Fueling Station The efficient delivery of hydrogen is necessary for the adoption of hydrogen as a transportation fuel, but numerous challenges must be met. 2 "Conventional" delivery options are limited by volumetric density,

148

Stationary nature of the density-functional free energy: Application to accelerated multiple-scattering calculations  

Science Journals Connector (OSTI)

The number of operations required for conventional density-functional algorithms grows as the cube of the number of atoms, N. For large systems the computing requirements are unattainable. To overcome this limitation it is acceptable to approximate those variables with respect to which the free energy is stationary. We show that the stationarity of the free energy with respect to electron density, one-electron potential, chemical potential, occupation function, and temperature allows for very useful approximations leading to rapid and accurate determination of the free energy. Here we discuss approximations involved in calculating the finite temperature electron density needed to evaluate the Harris-Foulkes free energy. Of particular importance are (1) an electron density at each site that is based on exact solution of the Poisson equation combined with a solution of the multiple-scattering problem in which only scattering from a small cluster of sites surrounding the site in question is retained and (2) an approximate occupation function having a finite number of poles in the complex energy plane. The intention is to develop, within density-functional theory, an O(N) scalable first-principles scheme, based on spatially local multiple-scattering methods, for calculating free energies of large systems.

D. M. C. Nicholson; G. M. Stocks; Y. Wang; W. A. Shelton; Z. Szotek; W. M. Temmerman

1994-11-15T23:59:59.000Z

149

Carrier-carrier scattering in the gain dynamics of InxGa1-xAs/AlyGa1-yAs diode lasers  

Science Journals Connector (OSTI)

Ultrafast optical nonlinearities in semiconductors play a central role in determining transient amplification and pulse-dependent gain saturation in diode lasers. Both carrier-phonon and carrier-carrier scattering are expected to determine the gain dynamics in these systems. We present a relaxation-time approximation model for carrier-carrier scattering in strained-layer lasers. The carrier-carrier scattering rates are determined using the quasiequilibrium distribution functions for a given background carrier density. The distribution function to which the photoexcited distribution relaxes is a Fermi-Dirac function where the chemical potential and temperature are self-consistently chosen so that both particle number and energy are conserved in the carrier-carrier scattering process. The relaxation approximation makes the problem an effective one-dimensional problem which can then be solved directly for the carrier distributions using an adaptive Runge-Kutta routine. This procedure is less computationally intensive than a full Monte Carlo simulation. The results show that the inclusion of carrier-carrier scattering improves previous results where only carrier-phonon scattering was included and that carrier-carrier scattering is necessary to produce heating of the carriers in the high-energy tails. © 1996 The American Physical Society.

G. D. Sanders; C.-K. Sun; B. Golubovic; J. G. Fujimoto; C. J. Stanton

1996-09-15T23:59:59.000Z

150

A neutron multiplicity meter for deep underground muon-induced high-energy neutron measurements  

Science Journals Connector (OSTI)

We present, for the first time, the design of an instrument capable of measuring the high energy ( > 60 MeV ) muon-induced neutron flux deep underground. The instrument is based on applying the Gd-loaded liquid-scintillator technique to measure the rate of multiple low-energy neutron events produced in a Pb target and from this measurement to infer the rate of high energy neutron events. This unique signature allows both for efficient tagging of neutron multiplicity events as well as rejection of random gamma backgrounds so effectively that typical low-background techniques are not required. We present design studies based on Monte Carlo simulations that show that an apparatus consisting of a Pb target of 200 cm by 200 cm area by 60 cm thickness covered by a 60 cm thick Gd-loaded liquid scintillator (0.5% Gd content) detector could measure, at a depth of 2000 meters of water equivalent (m.w.e), a rate of 70 ± 8 (stat) events/year with a background of less than 10 events/year. We discuss the relevance of this technique to measuring the muon-induced neutron background in searches for dark matter in the form of Weakly Interacting Massive Particles (WIMP). Based on these studies, we also discuss the benefits of using a neutron multiplicity meter as a component of active shielding in such experiments.

R. Hennings-Yeomans; D.S. Akerib

2007-01-01T23:59:59.000Z

151

Dynamics of photoexcited carriers in graphene  

Science Journals Connector (OSTI)

The nonequilibrium dynamics of carriers and phonons in graphene is investigated by solving the microscopic kinetic equations with the carrier-phonon and carrier-carrier Coulomb scatterings explicitly included. The Fermi distribution of hot carriers is found to be established within 100 fs and the temperatures of electrons in the conduction and valence bands are very close to each other, even when the excitation density and the equilibrium density are comparable, thanks to the strong interband Coulomb scattering. Moreover, the temporal evolutions of the differential transmission obtained from our calculations agree with the experiments by Wang et al.[Appl. Phys. Lett. 96, 081917 (2010)] and Hale et al. [Phys. Rev. B 83, 121404 (2011)] very well, with two distinct differential transmission relaxations presented. We show that the fast relaxation is due to the rapid carrier-phonon thermalization and the slow one is mainly because of the slow decay of hot phonons. We also show that the remote-interfacial phonons have significant influence on the relaxation of the differential transmission and can be responsible for the difference of the transmission evolutions in samples with few and many layers. In addition, it is found that the temperatures of the hot phonons in different branches are different and the temperature of hot carriers can be even lower than that of the hottest phonons. Finally, we show that the slow relaxation rate exhibits a mild valley in the excitation-density dependence and is linearly dependent on the probe-photon energy.

B. Y. Sun; Y. Zhou; M. W. Wu

2012-03-13T23:59:59.000Z

152

Femtosecond kinetics of photoexcited carriers in germanium  

Science Journals Connector (OSTI)

Thermalization, intervalley scattering, and cooling of photoexcited carriers are observed in the indirect-band-gap semiconductor Ge through time-resolved direct-band-gap transmission and luminescence with 100-fs resolution. The transmission experiment, which uses ?=1.53 ?m, 120-fs pulses from a 76-MHz optical parametric oscillator takes advantage of the indirect-band-gap character of Ge to unambiguously determine the ??L intervalley scattering time at 295 K. The measured ??L transfer time for electrons at the ? valley edge is 230±25 fs yielding 4.2±0.2×108 eV/cm for the D?-L intervalley deformation potential. The luminescence experiments were performed at 10 K using a standard time and spectrally gated up-conversion technique employing an 82-MHz, 80-fs pulse width Ti:sapphire laser operating at ?=750 nm. From the luminescence experiments conducted with peak carrier densities of 1018–1019 cm-3, we observe that ??L,X scattering competes with carrier-carrier scattering so that nonthermalized carriers are observed for up to several hundred femtoseconds after an excitation pulse. Because the initial carrier kinetic energy is quite high we find that in addition to phonon-assisted L-L intervalley scattering, X-L and X-X processes must be included to account for a carrier-cooling time. A value of 5×108 eV/cm is obtained for the DX-X deformation potential.

X. Q. Zhou; H. M. van Driel; G. Mak

1994-08-15T23:59:59.000Z

153

Energy Information Administration/Monthly Energy Review January 2001 163 Multiple Prefix Symbol  

E-Print Network [OSTI]

Prefixes Energy Source Original Unit multiplied by Conversion Factor equals Final Unit Petroleum barrels feet (ft3 ) a Exact conversion. b Calculated by the Energy Information Administration. Source: U, October 1993), pp. B-10, C-17 and C-21. Table B3. Other Physical Conversion Factors #12;

Kostic, Milivoje M.

154

Charged Particle and Photon Multiplicity, and Transverse Energy Production in High-Energy Heavy-Ion Collisions  

E-Print Network [OSTI]

We review the charged particle and photon multiplicity, and transverse energy production in heavy-ion collisions starting from few GeV to TeV energies. The experimental results of pseudorapidity distribution of charged particles and photons at different collision energies and centralities are discussed. We also discuss the hypothesis of limiting fragmentation and expansion dynamics using the Landau hydrodynamics and the underlying physics. Meanwhile, we present the estimation of initial energy density multiplied with formation time as a function of different collision energies and centralities. In the end, the transverse energy per charged particle in connection with the chemical freeze-out criteria is discussed. We invoke various models and phenomenological arguments to interpret and characterize the fireball created in heavy-ion collisions. This review overall provides a scope to understand the heavy-ion collision data and a possible formation of a deconfined phase of partons via the global observables like charged particles, photons and the transverse energy measurement.

Raghunath Sahoo; Aditya Nath Mishra; Nirbhay K. Behera; Basanta K. Nandi

2014-08-25T23:59:59.000Z

155

Extracting hot carriers from photoexcited semiconductor nanocrystals  

SciTech Connect (OSTI)

This research program addresses a fundamental question related to the use of nanomaterials in solar energy -- namely, whether semiconductor nanocrystals (NCs) can help surpass the efficiency limits, the so-called “Shockley-Queisser” limit, in conventional solar cells. In these cells, absorption of photons with energies above the semiconductor bandgap generates “hot” charge carriers that quickly “cool” to the band edges before they can be utilized to do work; this sets the solar cell efficiency at a limit of ~31%. If instead, all of the energy of the hot carriers could be captured, solar-to-electric power conversion efficiencies could be increased, theoretically, to as high as 66%. A potential route to capture this energy is to utilize semiconductor nanocrystals. In these materials, the quasi-continuous conduction and valence bands of the bulk semiconductor become discretized due to confinement of the charge carriers. Consequently, the energy spacing between the electronic levels can be much larger than the highest phonon frequency of the lattice, creating a “phonon bottleneck” wherein hot-carrier relaxation is possible via slower multiphonon emission. For example, hot-electron lifetimes as long as ~1 ns have been observed in NCs grown by molecular beam epitaxy. In colloidal NCs, long lifetimes have been demonstrated through careful design of the nanocrystal interfaces. Due to their ability to slow electronic relaxation, semiconductor NCs can in principle enable extraction of hot carriers before they cool to the band edges, leading to more efficient solar cells.

Zhu, Xiaoyang

2014-12-10T23:59:59.000Z

156

Multiple regression analysis for the estimation of energy content of municipal solid waste  

Science Journals Connector (OSTI)

A regression equation is proposed to predict the Higher Heating Value (HHV) of Municipal Solid Waste (MSW) from the waste data of 86 cities of 35 countries. A mathematical model is developed, by using Statistical Package for Social Sciences (SPSS-10.0), to correlate the energy content of waste with the variables derived from its physical composition. Performance of the proposed multiple regression model is superior to available models. For validation, the proposed model is applied to the waste data of Jaipur City (India), nine cities of EEC countries and also to the MSW of USA. Energy content values obtained by proposed regression model and Modified Dulong's Equation (MDE) are closer to the measured mean energy content values for EEC countries compared to the values obtained by Khan's method. Objective of the paper is to propose a simple model, which can replace the lengthy MDE and which has universal applicability for the predication of HHVs.

G.D. Agrawal; A.P.S. Rathore; A.B. Gupta

2007-01-01T23:59:59.000Z

157

Novel New Oxygen Carriers for Chemical Looping Combustion of Solid Fuels  

Science Journals Connector (OSTI)

Novel New Oxygen Carriers for Chemical Looping Combustion of Solid Fuels ... A loop of chem. ... Energy Combust. ...

Yueying Fan; Ranjani Siriwardane

2014-02-21T23:59:59.000Z

158

E-Print Network 3.0 - air carrier crashes Sample Search Results  

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

... Source: Southwest Region University Transportation Center Collection: Engineering ; Energy Storage, Conversion and Utilization 2 FOREIGN FLAG CARRIER JUSTIFICATION I hereby...

159

Ultrafast thermalization of photoexcited carriers in polar semiconductors  

Science Journals Connector (OSTI)

We present a combined experimental and theoretical study of ultrafast thermalization of high-energy carriers photogenerated by femtosecond laser excitation in GaAs and InP. Luminescence up-conversion is used to monitor the spectral and temporal evolution of the carrier distribution with a time resolution of about 100 fs. A rapid redistribution of electrons and holes over a wide energy range is found within the first 100 fs after excitation. The experimental results are analyzed by Monte Carlo simulations including a molecular-dynamics scheme to describe the carrier kinetics. We show that the Coulomb interaction among carriers is responsible for the initial ultrafast thermalization.

Lucio Rota; Paolo Lugli; Thomas Elsaesser; Jagdeep Shah

1993-02-15T23:59:59.000Z

160

1Edmund R.S. Kunji, Medical Research Council, Mitochondrial Biology Unit The Mitochondrial Carrier Family I  

E-Print Network [OSTI]

in metabolism #12;4 Role of mitochondrial carriers in energy conversion #12;5 Role of mitochondrial carriers of mitochondrial carriers palmitoylcarnitine adenosinetriphosphate arginine glutamate proton #12;15 Energy coupling1Edmund R.S. Kunji, Medical Research Council, Mitochondrial Biology Unit The Mitochondrial Carrier

Schnaufer, Achim

Note: This page contains sample records for the topic "multiple energy carriers" 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

Hydrogen energy  

Science Journals Connector (OSTI)

...use of hydrogen as an energy carrier will depend significantly...its utilization and conversion to electricity/heat...becomes an alternative energy carrier. However, various...effectively with conventional energy conversion technologies. The...

2007-01-01T23:59:59.000Z

162

Network flow model for multi-energy systems  

Science Journals Connector (OSTI)

This paper describes a novel approach to model networks with multiple energy carrier. The proposed nodal matrix establishes a link between an optimization of enclosed areas and their interconnections via networks. In the envisioned network flow model ... Keywords: energy conversion, energy hubs, grids, line losses, network flow, optimal power flow

Matthias Schulze; Goran Gašparovi?

2010-02-01T23:59:59.000Z

163

Sealed substrate carrier for electroplating  

DOE Patents [OSTI]

One embodiment relates to a substrate carrier for use in electroplating a plurality of substrates. The substrate carrier includes a non-conductive carrier body on which the substrates are held, and conductive lines are embedded within the carrier body. A conductive bus bar is embedded into a top side of the carrier body and is conductively coupled to the conductive lines. A thermoplastic overmold covers a portion of the bus bar, and there is a plastic-to-plastic bond between the thermoplastic overmold and the non-conductive carrier body. Other embodiments, aspects and features are also disclosed.

Ganti, Kalyana Bhargava (Fremont, CA)

2012-07-17T23:59:59.000Z

164

A Monte Carlo Study of Multiplicity Fluctuations in Pb-Pb Collisions at LHC Energies  

E-Print Network [OSTI]

With large volumes of data available from LHC, it has become possible to study the multiplicity distributions for the various possible behaviours of the multiparticle production in collisions of relativistic heavy ion collisions, where a system of dense and hot partons has been created. In this context it is important and interesting as well to check how well the Monte Carlo generators can describe the properties or the behaviour of multiparticle production processes. One such possible behaviour is the self-similarity in the particle production, which can be studied with the intermittency studies and further with chaoticity/erraticity, in the heavy ion collisions. We analyse the behaviour of erraticity index in central Pb-Pb collisions at centre of mass energy of 2.76 TeV per nucleon using the AMPT monte carlo event generator, following the recent proposal by R.C. Hwa and C.B. Yang, concerning the local multiplicity fluctuation study as a signature of critical hadronization in heavy-ion collisions. We report ...

Gupta, Ramni

2015-01-01T23:59:59.000Z

165

Multiple Crystal Cavities for Unlimited X-ray Energy Resolution and  

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

An Intriguing Twist in the Structure of a Cobalt Oxide Catalyst An Intriguing Twist in the Structure of a Cobalt Oxide Catalyst Breaking Records in Neurological Microradiology Exposing Valence-Bond Model Inadequacies Plants' Rapid Response System Revealed Rewriting the Organofluorine Playbook Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Multiple Crystal Cavities for Unlimited X-ray Energy Resolution and Coherence AUGUST 21, 2012 Bookmark and Share Fabry-Perot resonance spectra (right) of a single-cavity resonator, two cascaded resonators, and a monolithic two-cavity resonator, respectively. Note the significant background of T1 as the Bragg reflectivity from a 10-μm diamond plate is only 59%. By comparison, spectra T2 and T3 are very

166

Grand Observatories and multiple-OWL for high energy neutrino astrophysics  

Science Journals Connector (OSTI)

A possible “Space Factory” on the International Space Station (ISS) for “Grand Observatories” would permit a large astrophysical observatory in space. Grand-Observatories could revolutionize the great observatories that were hitherto pre-assembled and deployed by the Space Transportation System (STS). The concept of the ISS-Space-Factory envisages a plan of orbital construction fine-tuning and deployment of large-scale astrophysical instruments into the desired free-flying orbit. It incorporates physical aids of the robotics arms and Extra-Vehicular Activities (EVA) of astronauts. This concept study also examines the necessary infrastructure on ISS for manufacturing a large spaceship for future deployment to the Moon Mars and other interplanetary destinations. We envision a step-by-step advancement of the “Space Factory” with the most frontier astrophysical programs. Less demanding experiments could precede the construction of the most demanding optical telescopes. Multiple-OWL (Orbiting-array of Wide-angle Light collector) has very forgiving optical resolution (?0.1 degrees) and would be suitable for the first generation payload to be built on and deployed from the ISS. This system is an earth’s night-sky-watcher for observing the highest energy cosmic rays and other atmospheric phenomena and is currently in the SEU Explorer Concept. Using the Space Factory this collector can drastically advance its capacity to cover a 120° Field-of-View (FOV) in which the entire horizon of the earth (?6000 km diameter) can be viewed from a low-earth orbit (?1000 km). We have already developed a revolutionary wide-angle Fresnel-lens optic in the OWL program and the Multiple-OWL can use several units of them. As one of the Grand Observatories the proposed Multiple-OWL satellite can open a new window for observational universe in terms of high energy neutrino astrophysics. The OWL may also be used for monitoring earth-threatening meteorites if flipped on orbit at daytime for deep space observation.

Yoshiyuki Takahashi; John O. Dimmock; Lloyd W. Hillman; James B. Hadaway; David J. Lamb; Mamoru Mohri; Toshikazu Ebisuzaki

1999-01-01T23:59:59.000Z

167

Simple Analytical and Graphical Tools for Carrier Based PWM Methods  

E-Print Network [OSTI]

energy conversion. Shown in Figure 1, the classical VSI generates a low frequency output voltage with conSimple Analytical and Graphical Tools for Carrier Based PWM Methods Ahmet M. Hava y Russel J tools for the study, performance evaluation, and design of the modern carrier based PWM methods which

Hava, Ahmet

168

Spectral hole burnings at high energy tails in spontaneous emission and hot carrier relaxation in InGaAsP lasers  

SciTech Connect (OSTI)

Spectral hole burnings in spontaneous emission spectra from 1.3 ..mu..m InGaAsP lasers were found. The results are understood on the basis of population burnings of holes associated with the saturation of intervalence-band absorption. Theoretical results on hot carrier relaxation are shown to explain the population burnings, pointing out an importance of nonequilibrium optical phonon populations in the active layers of long wavelength InGaAsP lasers and light emitting diodes (LED's).

Yamanishi, M.; Mikoshiba, N.; Nonomura, K.; Suemune, I.

1983-06-01T23:59:59.000Z

169

Potential Carriers and Approaches for Hydrogen Delivery  

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

Hydrogen Carriers Calculation Tools Truck Transport Available H 2 Carrier Solution (Oil or water) Additional Reactant H 2 Carrier 16 Storage and forecourt tabs have been...

170

Slow Hot-Carrier Relaxation in Colloidal Graphene Quantum Dots  

Science Journals Connector (OSTI)

Here we show that carrier cooling in colloidal graphene quantum dots can be 2 orders of magnitude slower than in bulk materials, which could enable harvesting of hot charge carriers to improve the efficiency of solar energy conversion. ... We speculate that the state(s) should have higher excitation energy because of the shorter lifetime (18 ps), which nevertheless is also significantly longer than those in bulk materials, and greater density of states at higher energies. ...

Mallory L. Mueller; Xin Yan; Bogdan Dragnea; Liang-shi Li

2010-12-02T23:59:59.000Z

171

Carrier localization in gallium nitride  

SciTech Connect (OSTI)

In wide bandgap GaN, a large number of interesting and important scientific questions remain to be answered. For example, the large free electron concentration reaching 10{sup 19} to 10{sup 20} cm{sup - 3} in nominally undoped material are ascribed to intrinsic defects because no chemical impurity has been found at such high concentrations. According to theoretical models, a nitrogen vacancy acts as a donor but its formation energy is very large in n-type materials, making this suggestion controversial. We have investigated the nature of this yet unidentified donor at large hydrostatic pressure. Results from infrared reflection and Raman scattering indicate strong evidence for localization of free carriers by large pressures. The carrier density is drastically decreased by two orders of magnitude between 20 and 30 GPa. Several techniques provide independent evidence for results in earlier reports and present the first quantitative analysis. A possible interpretation of this effect in terms of the resonant donor level is presented.

Wetzel, C. [Lawrence Berkeley National Lab., CA (United States)][California Univ., Berkeley, CA (United States); Walukiewicz, W. [Lawrence Berkeley National Lab., CA (United States); Haller, E.E. [Lawrence Berkeley National Lab., CA (United States)][California Univ., Berkeley, CA (United States)] [and others

1996-09-01T23:59:59.000Z

172

Plasmonic conversion of solar energy  

E-Print Network [OSTI]

of carriers allows maintaining the energy conversionenergy conversion 8 Timescale of charge separation, carrierin this energy conversion method, i.e. carrier regeneration

Clavero, Cesar

2014-01-01T23:59:59.000Z

173

Maintainable substrate carrier for electroplating  

DOE Patents [OSTI]

One embodiment relates to a substrate carrier for use in electroplating a plurality of substrates. The carrier includes a non-conductive carrier body on which the substrates are placed and conductive lines embedded within the carrier body. A plurality of conductive clip attachment parts are attached in a permanent manner to the conductive lines embedded within the carrier body. A plurality of contact clips are attached in a removable manner to the clip attachment parts. The contact clips hold the substrates in place and conductively connecting the substrates with the conductive lines. Other embodiments, aspects and features are also disclosed.

Chen, Chen-An (Milpitas, CA); Abas, Emmanuel Chua (Laguna, PH); Divino, Edmundo Anida (Cavite, PH); Ermita, Jake Randal G. (Laguna, PH); Capulong, Jose Francisco S. (Laguna, PH); Castillo, Arnold Villamor (Batangas, PH); Ma; Diana Xiaobing (Saratoga, CA)

2012-07-17T23:59:59.000Z

174

Regenerable Mixed Copper-Iron-Inert Support Oxygen Carriers  

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

Mixed Copper-Iron-Inert Support Oxygen Carriers Mixed Copper-Iron-Inert Support Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process Contact NETL Technology Transfer Group techtransfer@netl.doe.gov December 2012 This patent-pending technology, "Regenerable Mixed Copper-Iron-Inert Support Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process," provides a metal-oxide oxygen carrier for application in fuel combustion processes that use oxygen. This technology is available for licensing and/or further collaborative research with the U.S. Department of Energy's National Energy Technology Laboratory. Overview Patent Details U.S. Non-Provisional Patent Application No. 13/159,553; titled "Regenerable Mixed Copper-Iron-Inert Support Oxygen Carriers for Solid

175

Requisites for Highly Efficient Hot-Carrier Solar Cells  

Science Journals Connector (OSTI)

We have constructed new models based on detailed balance of particle and energy fluxes to clarify the operating principle of hot-carrier solar cells (HC-SCs) and find the requisites for high conversion efficiency...

Yasuhiko Takeda

2014-01-01T23:59:59.000Z

176

U-042: Mac RealPlayer Multiple Vulnerabilities | Department of Energy  

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

42: Mac RealPlayer Multiple Vulnerabilities 42: Mac RealPlayer Multiple Vulnerabilities U-042: Mac RealPlayer Multiple Vulnerabilities November 21, 2011 - 9:15am Addthis PROBLEM: Mac RealPlayer Multiple Vulnerabilities. PLATFORM: Versions 12.0.0.1701 and prior. ABSTRACT: Multiple vulnerabilities have been reported in Mac RealPlayer, which can be exploited by malicious people to compromise a user's system. reference LINKS: Secunia Advisory: SA46963 Secunia Vulnerability Report: Mac RealPlayer 12.x Secunia Advisory: SA46954 IMPACT ASSESSMENT: High Discussion: Multiple vulnerabilities have been reported in RealPlayer, which can be exploited by malicious people to compromise a user's system. Successful exploitation of the vulnerabilities may allow execution of arbitrary code. The vulnerabilities are reported in the versions 14.0.7 and prior.

177

V-070: Apache CouchDB Multiple Vulnerabilities | Department of Energy  

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

0: Apache CouchDB Multiple Vulnerabilities 0: Apache CouchDB Multiple Vulnerabilities V-070: Apache CouchDB Multiple Vulnerabilities January 16, 2013 - 1:00am Addthis PROBLEM: Apache CouchDB Multiple Vulnerabilities PLATFORM: The vulnerabilities are reported in versions prior to 1.0.4, 1.1.2, and 1.2.1. ABSTRACT: Multiple vulnerabilities have been reported in Apache CouchDB REFERENCE LINKS: Secunia Advisory SA51765 Seclists.org/fulldisclosure/2013/Jan/80 Seclists.org/fulldisclosure/2013/Jan/81 Seclists.org/fulldisclosure/2013/Jan/82 CVE-2012-5641 CVE-2012-5649 CVE-2012-5650 IMPACT ASSESSMENT: Medium DISCUSSION: Multiple vulnerabilities have been reported in Apache CouchDB, which can be exploited by malicious people to conduct cross-site scripting attacks and disclose potentially sensitive information. 1) Input passed via the query parameters to browser-based test suite is not

178

U-042: Mac RealPlayer Multiple Vulnerabilities | Department of Energy  

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

2: Mac RealPlayer Multiple Vulnerabilities 2: Mac RealPlayer Multiple Vulnerabilities U-042: Mac RealPlayer Multiple Vulnerabilities November 21, 2011 - 9:15am Addthis PROBLEM: Mac RealPlayer Multiple Vulnerabilities. PLATFORM: Versions 12.0.0.1701 and prior. ABSTRACT: Multiple vulnerabilities have been reported in Mac RealPlayer, which can be exploited by malicious people to compromise a user's system. reference LINKS: Secunia Advisory: SA46963 Secunia Vulnerability Report: Mac RealPlayer 12.x Secunia Advisory: SA46954 IMPACT ASSESSMENT: High Discussion: Multiple vulnerabilities have been reported in RealPlayer, which can be exploited by malicious people to compromise a user's system. Successful exploitation of the vulnerabilities may allow execution of arbitrary code. The vulnerabilities are reported in the versions 14.0.7 and prior.

179

On the Performance of Energy-Division Multiple Access with Regular Constellations  

Science Journals Connector (OSTI)

In this paper we describe a multiple-access protocol in which different users are assumed to share the same bandwidth and the same pulse. Users employ the same modulation (binary-phase shift keying, quadrature-phase shift keying, and rectangular-phase ... Keywords: Amplitude modulation, Bit error rate, Multiple access, Normalized throughput, Successive decoding

Pierluigi Salvo Rossi; Gianmarco Romano; Francesco Palmieri

2012-05-01T23:59:59.000Z

180

Monitoring method and apparatus using high-frequency carrier  

DOE Patents [OSTI]

A method and apparatus for monitoring an electrical-motor-driven device by injecting a high frequency carrier signal onto the power line current. The method is accomplished by injecting a high frequency carrier signal onto an AC power line current. The AC power line current supplies the electrical-motor-driven device with electrical energy. As a result, electrical and mechanical characteristics of the electrical-motor-driven device modulate the high frequency carrier signal and the AC power line current. The high frequency carrier signal is then monitored, conditioned and demodulated. Finally, the modulated high frequency carrier signal is analyzed to ascertain the operating condition of the electrical-motor-driven device. 6 figs.

Haynes, H.D.

1996-04-30T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Hot carrier diffusion in graphene  

Science Journals Connector (OSTI)

We report an optical study of charge transport in graphene. Diffusion of hot carriers in epitaxial graphene and reduced graphene-oxide samples are studied using an ultrafast pump-probe technique with a high spatial resolution. Spatiotemporal dynamics of hot carriers after a pointlike excitation are monitored. Carrier-diffusion coefficients of 11?000 and 5500?cm2?s?1 are measured in epitaxial graphene and reduced graphene-oxide samples, respectively, with a carrier temperature on the order of 3600 K. The demonstrated optical techniques can be used for noncontact and noninvasive in situ detection of transport properties of graphene.

Brian A. Ruzicka; Shuai Wang; Lalani K. Werake; Ben Weintrub; Kian Ping Loh; Hui Zhao

2010-11-08T23:59:59.000Z

182

U-022: Apple QuickTime Multiple Vulnerabilities | Department of Energy  

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

2: Apple QuickTime Multiple Vulnerabilities 2: Apple QuickTime Multiple Vulnerabilities U-022: Apple QuickTime Multiple Vulnerabilities October 28, 2011 - 8:15am Addthis PROBLEM: Apple QuickTime Multiple Vulnerabilities. PLATFORM: Apple QuickTime prior to 7.7.1 ABSTRACT: A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system. reference LINKS: Apple Product Security Article: HT5016 Secunia Advisory SA46618 SecurityTracker Alert ID: 1026251 CVE-2011-3218, CVE-2011-3219, CVE-2011-3220 CVE-2011-3221, CVE-2011-3222, CVE-2011-3223 CVE-2011-3228, CVE-2011-3247, CVE-2011-3248 CVE-2011-3249, CVE-2011-3250, CVE-2011-3251 IMPACT ASSESSMENT: High Discussion: Multiple vulnerabilities have been reported in Apple Quicktime, which can be exploited by malicious people to compromise a user's system.

183

Nanostructured Oxygen Carriers for Chemical Looping Combustion and Chemical Looping Hydrogen Production.  

E-Print Network [OSTI]

??Chemical looping combustion (CLC) is an emerging technology for clean energy-production. In CLC, an oxygen carrier is periodically oxidized with air and then reduced in… (more)

Solunke, Rahul Dushyantrao

2011-01-01T23:59:59.000Z

184

E-Print Network 3.0 - aircraft carrier program Sample Search...  

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

of aircraft. NASA Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 4 AIAA 2008-7835 Selection of a Carrier...

185

V-211: IBM iNotes Multiple Vulnerabilities | Department of Energy  

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

211: IBM iNotes Multiple Vulnerabilities 211: IBM iNotes Multiple Vulnerabilities V-211: IBM iNotes Multiple Vulnerabilities August 5, 2013 - 6:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in IBM Lotus iNotes PLATFORM: IBM iNotes 9.x ABSTRACT: IBM iNotes has two cross-site scripting vulnerabilities and an ActiveX Integer overflow vulnerability REFERENCE LINKS: Secunia Advisory SA54436 IBM Security Bulletin 1645503 CVE-2013-3027 CVE-2013-3032 CVE-2013-3990 IMPACT ASSESSMENT: High DISCUSSION: 1) Certain input related to MIME mail is not properly sanitized before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site. 2) An integer overflow error within the DWA9W ActiveX control can be exploited to execute arbitrary code.

186

On the Performance of Energy-Division Multiple Access with Regular Constellations  

Science Journals Connector (OSTI)

In this paper we describe a multiple-access protocol in which different users are assumed to share the same bandwidth and the same pulse. Users employ the same modulation (binary-phase shift keying, quadrature...

Pierluigi Salvo Rossi; Gianmarco Romano…

2012-05-01T23:59:59.000Z

187

V-080: Apple iOS Multiple Vulnerabilities | Department of Energy  

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

0: Apple iOS Multiple Vulnerabilities 0: Apple iOS Multiple Vulnerabilities V-080: Apple iOS Multiple Vulnerabilities January 30, 2013 - 12:56am Addthis PROBLEM: Apple iOS Multiple Vulnerabilities PLATFORM: Apple iOS 6.x for iPhone 3GS and later Apple iOS for iPad 6.x Apple iOS for iPod touch 6.x ABSTRACT: Two security issues and multiple vulnerabilities have been reported in Apple iOS REFERENCE LINKS: Article: HT5642 APPLE-SA-2013-01-28-1 iOS 6.1 Software Update Secunia Advisory SA52002 CVE-2011-3058 CVE-2012-2619 CVE-2012-2824 CVE-2012-2857 CVE-2012-2889 CVE-2012-3606 CVE-2012-3607 CVE-2012-3621 CVE-2012-3632 CVE-2012-3687 CVE-2012-3701 CVE-2013-0948 CVE-2013-0949 CVE-2013-0950 CVE-2013-0951 CVE-2013-0952 CVE-2013-0953 CVE-2013-0954 CVE-2013-0955 CVE-2013-0956 CVE-2013-0958 CVE-2013-0959 CVE-2013-0962 CVE-2013-0963 CVE-2013-0964

188

U-171: DeltaV Products Multiple Vulnerabilities | Department of Energy  

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

71: DeltaV Products Multiple Vulnerabilities 71: DeltaV Products Multiple Vulnerabilities U-171: DeltaV Products Multiple Vulnerabilities May 17, 2012 - 7:00am Addthis PROBLEM: DeltaV Products Multiple Vulnerabilities PLATFORM: DeltaV and DeltaV Workstations versions 9.3.1, 10.3.1, 11.3, and 11.3.1 DeltaV ProEssentials Scientific Graph version 5.0.0.6 ABSTRACT: Multiple vulnerabilities have been reported in DeltaV products, which can be exploited by malicious people to conduct cross-site scripting attacks, SQL injection attacks, cause a DoS (Denial of Service), and compromise a vulnerable system. Reference LINKS: Secunia Advisory SA49210 CVE-2012-1814 CVE-2012-1815 CVE-2012-1816 CVE-2012-1817 CVE-2012-1818 IMPACT ASSESSMENT: High Discussion: 1) Certain unspecified input is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and

189

Predicting and optimization of energy consumption using system dynamics-fuzzy multiple objective programming in world heritage areas  

Science Journals Connector (OSTI)

Energy consumption and efficiency are important in regional low-carbon economic development and environmental protection. This paper provides a system dynamics and fuzzy multi-objective programming integrated approach for the prediction of energy consumption and CO2 emissions at a regional level. First, a general system dynamics model is constructed to analyze an economy-energy system. To deal with the uncertainties and optimize the parameters in the system, a fuzzy multiple objective programming model is used. This decision support model is then applied to predict the energy consumption of a world heritage area in China during 2010–2020. The results reveal that the energy consumption and CO2 emissions increase dramatically with rapid economic growth. In the scenario herein considered, which is based on the proposed optimization model, a 19.32% reduction was found in the energy intensity decreases from 0.88 tce/104 RMB to 0.71 tce/104 RMB, and a 23.26% reduction in the CO2 emission intensity, from 2.15 t/104 RMB to 1.65 t/104 RMB. Policy suggestions such as adjusting the industrial structure, enhancing local hydro-power and renewable energy and increasing investment in energy technology and efficiency are indicated for the promotion of a low-carbon oriented economy in world heritage areas.

Zhibin Wu; Jiuping Xu

2013-01-01T23:59:59.000Z

190

V-191: Apple Mac OS X Multiple Vulnerabilities | Department of Energy  

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

1: Apple Mac OS X Multiple Vulnerabilities 1: Apple Mac OS X Multiple Vulnerabilities V-191: Apple Mac OS X Multiple Vulnerabilities July 3, 2013 - 6:00am Addthis PROBLEM: Apple has issued a security update for Mac OS X PLATFORM: Apple Macintosh OS X ABSTRACT: The vulnerabilities are caused due to a bundled version of QuickTime REFERENCE LINKS: Secunia Advisory SA54049 APPLE-SA-2013-07-02-1 Security Update 2013-003 CVE-2013-1018 CVE-2013-1019 CVE-2013-1022 IMPACT ASSESSMENT: High DISCUSSION: A boundary error when parsing compressed data within H.264 encoded movie files can be exploited to cause a buffer overflow A boundary error when handling the Sorenson Video 3 "mdat" section within a MOV file can be exploited to cause a buffer overflow A boundary error when handling "mvhd" atoms can be exploited to cause a

191

V-191: Apple Mac OS X Multiple Vulnerabilities | Department of Energy  

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

1: Apple Mac OS X Multiple Vulnerabilities 1: Apple Mac OS X Multiple Vulnerabilities V-191: Apple Mac OS X Multiple Vulnerabilities July 3, 2013 - 6:00am Addthis PROBLEM: Apple has issued a security update for Mac OS X PLATFORM: Apple Macintosh OS X ABSTRACT: The vulnerabilities are caused due to a bundled version of QuickTime REFERENCE LINKS: Secunia Advisory SA54049 APPLE-SA-2013-07-02-1 Security Update 2013-003 CVE-2013-1018 CVE-2013-1019 CVE-2013-1022 IMPACT ASSESSMENT: High DISCUSSION: A boundary error when parsing compressed data within H.264 encoded movie files can be exploited to cause a buffer overflow A boundary error when handling the Sorenson Video 3 "mdat" section within a MOV file can be exploited to cause a buffer overflow A boundary error when handling "mvhd" atoms can be exploited to cause a

192

Metal-Organic Heat Carrier Nanofluids. | EMSL  

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

Organic Heat Carrier Nanofluids. Metal-Organic Heat Carrier Nanofluids. Abstract: Nanofluids, dispersions of metal or oxide nanoparticles in a base working fluid, are being...

193

Generalized Eikonal Approximation and Multiple-Scattering Formalism at High Energies  

Science Journals Connector (OSTI)

......J. , in. High-Energy Physics and Nuclear Structure (1970) New York-London: Plenum...Physics (1959) New York: Interscience Publisher's...Collision Theory (1964) New York: Wiley. 20) Drozdov...J. , in. High-Energy Physics and Nuclear......

Mitsuaki Obu

1972-12-01T23:59:59.000Z

194

A parameterisation of the flux and energy spectrum of single and multiple muons in deep water/ice  

E-Print Network [OSTI]

In this paper parametric formulas are presented to evaluate the flux of atmospheric muons in the range of vertical depth between 1.5 to 5 km of water equivalent (km w.e.) and up to 85^o for the zenith angle. We take into account their arrival in bundles with different muon multiplicities. The energy of muons inside bundles is then computed considering the muon distance from the bundle axis. This parameterisation relies on a full Monte Carlo simulation of primary Cosmic Ray (CR) interactions, shower propagation in the atmosphere and muon transport in deep water [1]. The primary CR flux and interaction models, in the range in which they can produce muons which may reach 1.5 km w.e., suffer from large experimental uncertainties. We used a primary CR flux and an interaction model able to correctly reproduce the flux, the multiplicity distribution, the spatial distance between muons as measured by the underground MACRO experiment.

M. Bazzotti; S. Biagi; G. Carminati; S. Cecchini; T. Chiarusi; G. Giacomelli; A. Margiotta; M. Sioli; M. Spurio

2009-10-22T23:59:59.000Z

195

A parameterisation of the flux and energy spectrum of single and multiple muons in deep water/ice  

E-Print Network [OSTI]

In this paper parametric formulas are presented to evaluate the flux of atmospheric muons in the range of vertical depth between 1.5 to 5 km of water equivalent (km w.e.) and up to 85^o for the zenith angle. We take into account their arrival in bundles with different muon multiplicities. The energy of muons inside bundles is then computed considering the muon distance from the bundle axis. This parameterisation relies on a full Monte Carlo simulation of primary Cosmic Ray (CR) interactions, shower propagation in the atmosphere and muon transport in deep water [1]. The primary CR flux and interaction models, in the range in which they can produce muons which may reach 1.5 km w.e., suffer from large experimental uncertainties. We used a primary CR flux and an interaction model able to correctly reproduce the flux, the multiplicity distribution, the spatial distance between muons as measured by the underground MACRO experiment.

Bazzotti, M; Carminati, G; Cecchini, S; Chiarusi, T; Giacomelli, G; Margiotta, A; Sioli, M; Spurio, M

2009-01-01T23:59:59.000Z

196

Carrier Localization and Cooling in Dye-Sensitized Nanocrystalline Titanium Dioxide Gordon M. Turner, Matthew C. Beard, and Charles A. Schmuttenmaer*  

E-Print Network [OSTI]

dem- onstrated solar-to-electric energy conversion efficiencies of 10.4%.2 The TiO2 nanoparticles#12;Carrier Localization and Cooling in Dye-Sensitized Nanocrystalline Titanium Dioxide Gordon M-induced carrier localization and/or backscattering of the photogenerated carriers. In addition, the carriers

197

Scaling Breaking-Down in Multiple Pion Production at High Energy  

Science Journals Connector (OSTI)

......formula in the higher energy region where the characteristics...atmosphere on the basis of nuclear interaction model of...iv) The calculated energy spectra of hadronic and...mountains. They observe high energy cosmic rays of ~1 TeV, corresponding to nuclear interactions of ~ 1015......

Akinori Ohsawa

1990-07-01T23:59:59.000Z

198

Hot carrier diffusion in graphene  

E-Print Network [OSTI]

We report an optical study of charge transport in graphene. Diffusion of hot carriers in epitaxial graphene and reduced graphene oxide samples are studied using an ultrafast pump-probe technique with a high spatial resolution. Spatiotemporal...

Ruzicka, Brian Andrew; Wang, Shuai; Werake, Lalani Kumari; Weintrub, Ben; Loh, Kian Ping; Zhao, Hui

2010-11-01T23:59:59.000Z

199

Theoretical and experimental study of dynamics of photoexcited carriers in GaN  

SciTech Connect (OSTI)

We present a theoretical and experimental study of the sub-picosecond dynamics of photo-excited carriers in GaN. In the theoretical model, interaction with an external ultrafast laser pulse is treated coherently and to account for the scattering mechanisms and dephasing processes, a generalized Monte-Carlo simulation is used. The scattering mechanisms included are carrier interactions with polar optical phonons and acoustic phonons, and carrier-carrier Coulomb interactions. We study the effect of different scattering mechanisms on the carrier densities. In the case that the excitation energy satisfies the threshold for polar optical scattering, phonon contribution is the dominant process in relaxing the system, otherwise, carrier-carrier mechanism is dominant. Furthermore, we present the temperature and pulse power dependent normalized luminescence intensity. The results are presented over a range of temperatures, electric field, and excitation energy of the laser pulse. For comparison, we also report the experimental time-resolved photoluminescence studies on GaN samples. There is a good agreement between the simulation and experiment in normalized luminescence intensity results. Therefore, we show that we can explain the dynamics of the photo-excited carriers in GaN by including only carrier-carrier and carrier-phonon interactions and a relatively simple two-band electronic structure model.

Shishehchi, Sara; Bellotti, Enrico, E-mail: bellotti@bu.edu [ECE Department, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215 (United States); Rudin, Sergey; Garrett, Gregory A.; Wraback, Michael [Sensors and Electron Devices Directorate, US Army Research Laboratory, 2800 Powder Mill Rd, Adelphi, Maryland 20783 (United States)

2013-12-21T23:59:59.000Z

200

Enhanced Seebeck coefficient from carrier-induced vibrational softening  

Science Journals Connector (OSTI)

Through their electron-lattice interactions, localized carriers reduce vibrational stiffness constants in their surroundings. States with a large electronic polarizability (e.g., multiatomic localized states and states of a singlet bipolaron formed of degenerate electronic orbitals) induce exceptionally large softening. This carrier-induced softening augments the Seebeck coefficient of solids whose carriers hop between these localized states through two separate effects. One enhancement is due to a localized carrier inducing an increase in a solid’s vibrational entropy. The other contribution is proportional to the vibrational energy transferred with a carrier as it hops. Both softening contributions are independent of the carrier density. The magnitudes and temperature dependencies of these contributions to the Seebeck coefficient indicate the electronic polarizabilities of the localized states and the vibrational modes to which they are coupled. Measured softening enhancements of Seebeck coefficients are sometimes large enough (e.g., >200 ?V/K measured at 300 K in boron carbides) to significantly increase the efficiency of thermoelectric energy conversion.

David Emin

1999-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Solar Energy Conversion by Dye-Sensitized Photovoltaic Cells  

Science Journals Connector (OSTI)

The device converted more than 60% of the incident photons to electric current at the absorption maximum of the sensitizer near 470 nm, and the overall conversion efficiency in full sunlight was between 1 and 2%. ... This striking performance defies expectations because such large-area junctions should fare poorly in photovoltaic energy conversion in the presence of defects at the disordered surface, enhancing the recombination of photogenerated charge carriers. ... less than one exciton is initially generated per NC, gave ?2 excitons (carrier multiplication) when pump photon energies are >3 times the NC band gap energy. ...

Michael Grätzel

2005-09-26T23:59:59.000Z

202

A parameterisation of the flux and energy spectrum of single and multiple muons in the deep water or ice  

Science Journals Connector (OSTI)

Atmospheric muons play an important role in underwater/ice neutrino detectors. A parameterisation of the flux of single and multiple muon events, of their lateral distribution and energy spectrum is presented. The kinematics parameters were modelled starting from a full Monte Carlo simulation of the interaction of primary cosmic rays with atmospheric nuclei. The parametric formulas are valid for a vertical depth of 1.5–5 km w.e. and up to 85 ? for the zenith angle, and can be used as input for a fast simulation of atmospheric muons in underwater/ice detectors.

M. Spurio

2006-01-01T23:59:59.000Z

203

Resonant carrier scattering by core-shell nanoparticles for thermoelectric power factor enhancement  

E-Print Network [OSTI]

to the formation of quasi-bound states inside the nanoparticles, which strongly scatter carriers near these energy on various nanostructured materials for ther- moelectric energy conversion.6,7 The ErAs nanoparticles emResonant carrier scattering by core-shell nanoparticles for thermoelectric power factor enhancement

204

Temperature dependence of carrier mobility in Si wafers measured by infrared photocarrier radiometry  

E-Print Network [OSTI]

to the existing intrinsic carrier density. According to the principle of conser- vation of energy,4 the radiation, such as silicon, the dominant process takes place through nonradiative energy conversion accompanied by phononTemperature dependence of carrier mobility in Si wafers measured by infrared photocarrier

Mandelis, Andreas

205

Public views on multiple dimensions of security : nuclear waepons, terrorism, energy, and the environment : 2007.  

SciTech Connect (OSTI)

We analyze and compare findings from identical national surveys of the US general public on nuclear security and terrorism administered by telephone and Internet in mid-2007. Key areas of investigation include assessments of threats to US security; valuations of US nuclear weapons and nuclear deterrence; perspectives on nuclear proliferation, including the specific cases of North Korea and Iran; and support for investments in nuclear weapons capabilities. Our analysis of public views on terrorism include assessments of the current threat, progress in the struggle against terrorism, preferences for responding to terrorist attacks at different levels of assumed casualties, and support for domestic policies intended to reduce the threat of terrorism. Also we report findings from an Internet survey conducted in mid 2007 that investigates public views of US energy security, to include: energy supplies and reliability; energy vulnerabilities and threats, and relationships among security, costs, energy dependence, alternative sources, and research and investment priorities. We analyze public assessments of nuclear energy risks and benefits, nuclear materials management issues, and preferences for the future of nuclear energy in the US. Additionally, we investigate environmental issues as they relate to energy security, to include expected implications of global climate change, and relationships among environmental issues and potential policy options.

Herron, Kerry Gale (University of Oklahoma, Norman, OK); Jenkins-Smith, Hank C. (University of Oklahoma, Norman, OK)

2008-01-01T23:59:59.000Z

206

Straddle Carrier Radiation Portal Monitoring  

SciTech Connect (OSTI)

U.S. Customs and Border Protection (CBP) is the primary enforcement agency protecting the nation’s ports of entry. CBP is enhancing its capability to interdict the illicit import of nuclear and radiological materials and devices that may be used by terrorists. Pacific Northwest National Laboratory (PNNL) is providing scientific and technical support to CBP in their goal to enable rapid deployment of nuclear and radiation detection systems at U. S. ports of entry to monitor 100% of the incoming international traffic and cargo while not adversely impacting the operations or throughput of the ports. The U.S. ports of entry include the following vectors: land border crossings, seaports, airports, rail crossings, and mail and express consignment courier facilities. U.S. Customs and Border Protection (CBP) determined that a screening solution was needed for Seaport cargo containers being transported by Straddle Carriers (straddle carriers). A stationary Radiation Portal Monitor (RPM) for Straddle Carriers (SCRPM) is needed so that cargo containers can be scanned while in transit under a Straddle Carrier. The Straddle Carrier Portal operational impacts were minimized by conducting a time-motion study at the Port, and adaptation of a Remotely Operated RPM (RO-RPM) booth concept that uses logical lighting schemes for traffic control, cameras, Optical Character Recognition, and wireless technology.

Andersen, Eric S.; Samuel, Todd J.; Mullen, O Dennis

2005-08-01T23:59:59.000Z

207

Multiple metrics for quantifying the intensity of water consumption of energy production  

E-Print Network [OSTI]

Discussion of the environmental implications of worldwide energy demand is currently dominated by the effects of carbon dioxide (CO[subscript 2]) emissions on global climate. At the regional scale, however, water resource ...

Spang, E S

208

Multiplication of high-energy electrons in irradiated materials studied using the Boltzmann kinetic equation  

Science Journals Connector (OSTI)

Processes involved in the formation of electron collision cascades created by nonrelativistic high-energy electrons, which can develop in materials exposed to electron and gamma radiation fluxes, ... is solved us...

A. I. Ryazanov; T. I. Mogilyuk…

2012-04-01T23:59:59.000Z

209

Analysis of savings due to multiple energy retrofits in a large office building  

SciTech Connect (OSTI)

The objective of this analysis was to characterize the benefits of the individual energy conservation measures that were applied to an existing large office building. The measures included those for lighting; those for the heating, ventilation, and air conditioning (HVAC) systems; and an energy management and control system (EMCS). The purpose was to improve our understanding of the impacts of the individual measures in contrast to the entire group of measures that were installed during a building improvement project. The scope of the study was primarily analytical; it used an hourly building simulation model to estimate the benefits. Input parameters for this model were adjusted so that the calculated results matched closely with the available monthly electrical billing data. Supplemental building energy use data were collected and used to improve the adjustment of these parameters. The benefits of the individual measures were then calculated using the matched model.

McLain, H.A.; Leigh, S.B.; MacDonald, J.M.

1994-05-01T23:59:59.000Z

210

Optimal estimation of free energies and stationary densities from multiple biased simulations  

E-Print Network [OSTI]

When studying high-dimensional dynamical systems such as macromolecules, quantum systems and polymers, a prime concern is the identification of the most probable states and their stationary probabilities or free energies. Often, these systems have metastable regions or phases, prohibiting to estimate the stationary probabilities by direct simulation. Efficient sampling methods such as umbrella sampling, metadynamics and conformational flooding have developed that perform a number of simulations where the system's potential is biased such as to accelerate the rare barrier crossing events. A joint free energy profile or stationary density can then be obtained from these biased simulations with weighted histogram analysis method (WHAM). This approach (a) requires a few essential order parameters to be defined in which the histogram is set up, and (b) assumes that each simulation is in global equilibrium. Both assumptions make the investigation of high-dimensional systems with previously unknown energy landscape ...

Wu, Hao

2013-01-01T23:59:59.000Z

211

Charge Particle Multiplicity and Transverse Energy Measurements in Au-Au collisions in PHENIX at RHIC  

E-Print Network [OSTI]

We present results on charged particle and transverse energy densities measured at mid-rapidity in Au-Au collisions at sqrt(s_{NN})=200 GeV. The mean transverse energy per charged particle is derived. The results are presented as a function of centrality, which is defined by the number of participating nucleons, and compared to results obtained in Au-Au collisions at sqrt{s_{NN})=130 GeV. A comparison with calculations from various theoretical models is performed.

A. Bazilevsky; for the PHENIX Collaboration

2002-09-26T23:59:59.000Z

212

Carrier cooling and exciton formation in GaSe  

Science Journals Connector (OSTI)

The initial cooling of hot carriers and the subsequent exciton formation in GaSe are studied by time-resolved photoluminescence (PL) using femtosecond up-conversion techniques. From the time-resolved PL spectra of this layered III-VI semiconductor two different energy relaxation channels are derived. After an initial subpicosecond cooling due to Fröhlich-type interaction of carriers with longitudinal optical E?(22) phonons a slower regime follows, which is dominated by deformation potential interaction with the nonpolar optical A1?(12) phonons. The coupling constant for nonpolar optical phonon scattering is derived. The subsequent formation of excitons is studied at different carrier densities and detection energies. A cross section for the free-exciton formation is determined based on a rate equation model.

S. Nüsse; P. Haring Bolivar; H. Kurz; V. Klimov; F. Levy

1997-08-15T23:59:59.000Z

213

Design optimization of a fuzzy distributed generation (DG) system with multiple renewable energy sources  

Science Journals Connector (OSTI)

The global rise in energy demands brings major obstacles to many energy organizations in providing adequate energy supply. Hence many techniques to generate cost effective reliable and environmentally friendly alternative energy source are being explored. One such method is the integration of photovoltaic cells wind turbine generators and fuel-based generators included with storage batteries. This sort of power systems are known as distributed generation (DG) power system. However the application of DG power systems raise certain issues such as cost effectiveness environmental impact and reliability. The modelling as well as the optimization of this DG power system was successfully performed in the previous work using Particle Swarm Optimization (PSO). The central idea of that work was to minimize cost minimize emissions and maximize reliability (multi-objective (MO) setting) with respect to the power balance and design requirements. In this work we introduce a fuzzy model that takes into account the uncertain nature of certain variables in the DG system which are dependent on the weather conditions (such as; the insolation and wind speed profiles). The MO optimization in a fuzzy environment was performed by applying the Hopfield Recurrent Neural Network (HNN). Analysis on the optimized results was then carried out.

2012-01-01T23:59:59.000Z

214

CSMA/CN: Carrier Sense Multiple Access with Collision Notification  

E-Print Network [OSTI]

transmitter learns of a packet loss, infers collision, only after completing the entire transmission immediately abort its transmission, freeing the channel for useful communication. There are two main hurdles aborts transmission. We show that the notifica- tion signature can be reliably detected at the listener

Nelakuditi, Srihari

215

Recent content in Energy Systems Integration | OpenEI Community  

Open Energy Info (EERE)

Recent content in Energy Systems Integration Recent content in Energy Systems Integration Home Name Post date sort icon Type Energy Systems Integration: A Convergence of Ideas Aaronbeach 8 Aug 2012 - 11:44 Document Energy Forms or Energy Carriers(G, Herrmann et al. 1983) Qinsun 15 Nov 2012 - 10:28 Document Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) Qinsun 15 Nov 2012 - 13:04 Document Integrated Energy Systems (IES) for Buildings: A Market Assessment(LeMar 2002) Qinsun 15 Nov 2012 - 13:05 Document Energy System Integration(Smith 2001) Qinsun 15 Nov 2012 - 13:09 Document A Framework for the Optimization of Integrated Energy Systems(Jain and Alleyne 2012) Qinsun 15 Nov 2012 - 13:19 Document Prospects for Nuclear Power(Davis 2012) Qinsun 15 Nov 2012 - 13:36 Document

216

Energy Systems Integration | OpenEI Community  

Open Energy Info (EERE)

Literature Review Literature Review Type Term Title Author Replies Last Post sort icon Document Literature Review A Framework for the Optimization of Integrated Energy Systems(Jain and Alleyne 2012) Qinsun 15 Nov 2012 - 13:19 Document Literature Review Energy System Integration(Smith 2001) Qinsun 15 Nov 2012 - 13:09 Document Literature Review Integrated Energy Systems (IES) for Buildings: A Market Assessment(LeMar 2002) Qinsun 15 Nov 2012 - 13:05 Document Literature Review Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) Qinsun 15 Nov 2012 - 13:04 Document Literature Review Energy Forms or Energy Carriers(G, Herrmann et al. 1983) Qinsun 15 Nov 2012 - 10:28 Groups Menu You must login in order to post into this group.

217

Perspectives with Hot Carrier solar cell J.F. Guillemoles, G.J. Conibeer, , M.A. Green  

E-Print Network [OSTI]

� EDF � ENSCP (7174) #12;2 Advanced concepts for solar energy conversion Photons BB 6000K Spectral energy selective contacts (Ross & Nozik 1982; W�rfel 1995) #12;5 Motivations Hot carrier cells Simple, 2 thermalization be avoided there also? #12;12 Energy loss rate for hot carriers Holes cool faster, but electrons

218

Ultrafast carrier dynamics in semiconductor quantum dots  

Science Journals Connector (OSTI)

The dynamics of band-edge photoluminescence (PL) in CdS nanocrystals (NC’s) dispersed in a glass matrix are studied with the femtosecond up-conversion technique. The time-resolved PL spectra exhibit several discrete features (three of them are in the NC energy band gap) which are not pronounced in a cw PL spectrum. The initial stage of a PL decay is governed by a depopulation of the lowest extended states due to carrier trapping (localization) on the time scale of 1 ps. The low-energy bands originating from the extended-to-localized state transitions exhibit extremely fast buildup dynamics (rise time is 400–700 fs) which is explained by the preexisting occupation of the localized states. © 1996 The American Physical Society.

V. Klimov; P. Haring Bolivar; H. Kurz

1996-01-15T23:59:59.000Z

219

CARRIER BASED PWM-VSI DRIVES IN THE OVERMODULATION REGION  

E-Print Network [OSTI]

CARRIER BASED PWM-VSI DRIVES IN THE OVERMODULATION REGION By Ahmet M. Hava A dissertation submitted in motor drive and other three-phase power conversion applications as voltage current sources the inverter energy e ciency, waveform quality, and voltage linearity. However, the dependence

Hava, Ahmet

220

Evaluating Solar Resource Data Obtained from Multiple Radiometers Deployed at the National Renewable Energy Laboratory: Preprint  

SciTech Connect (OSTI)

Solar radiation resource measurements from radiometers are used to predict and evaluate the performance of photovoltaic and concentrating solar power systems, validate satellite-based models for estimating solar resources, and advance research in solar forecasting and climate change. This study analyzes the performance of various commercially available radiometers used for measuring global horizontal irradiances (GHI) and direct normal irradiances (DNI). These include pyranometers, pyrheliometers, rotating shadowband irradiometers, and a pyranometer with a shading ring deployed at the National Renewable Energy Laboratory's Solar Radiation Research Laboratory (SRRL). The radiometers in this study were deployed for one year (from April 1, 2011, through March 31, 2012) and compared to measurements from radiometers with the lowest values of estimated measurement uncertainties for producing reference GHI and DNI.

Habte, A.; Sengupta, M.; Andreas, A.; Wilcox, S.; Stoffel, T.

2014-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Solar energy trapping with modulated silicon nanowire photonic crystals Guillaume Demsy and Sajeev John  

E-Print Network [OSTI]

Solar energy trapping with modulated silicon nanowire photonic crystals Guillaume Demésy and Sajeev by the American Institute of Physics. Related Articles Solar power conversion efficiency in modulated silicon utilizing multiple carrier generation via singlet exciton fission Appl. Phys. Lett. 101, 153507 (2012) Light

John, Sajeev

222

Unique LaTaO[subscript 4] Polymorph for Multiple Energy Applications  

SciTech Connect (OSTI)

Rare-earth niobate and tantalate (RE-Nb/Ta) materials are of considerable interest in environmental and energy-related applications that include phosphors for solid-state lighting, photocatalysts for both contaminant degeneration and H{sub 2} generation, chemically robust hosts for nuclear materials and wastes, and ion conductors for lithium batteries or solid-oxide fuel cells. However, the chemically inert nature limits the synthetic routes available to obtain these materials, which in turn hampers the discovery and development of new RE-Nb/Ta phases. Of the simple orthotantalate, LaTaO{sub 4}, there were three polymorphs known prior. With this paper, we present the structural characterization (from high-resolution X-ray powder diffraction data collected at the APS 11-BM line) of a fourth polymorph. It is obtained only from dehydration of La{sub 2}Ta{sub 2}O{sub 7}(OH){sub 2}, which is in turn synthesized hydrothermally. The structure of the new LaTaO{sub 4} polymorph is distinctive from the others in the arrangement of the alternating La-O polyhedra layers and TaO{sub 6} octahedra layers. Luminescence measurements (Eu-doped) and photocatalysis studies of the new LaTaO{sub 4} polymorph, and comparison to the performance of a previously described LaTaO{sub 4} polymorph reveals enhanced performance of the new polymorph in both applications. This study illustrates the relevance of form-function relationships in solid-state materials, as well as the important role of synthesis in the development of advanced functional materials.

Nyman, May; Rodriguez, Mark A.; Rohwer, Lauren E.S.; Martin, James E.; Waller, Mollie; Osterloh, Frank E.; (Sandia); (UCD)

2009-11-04T23:59:59.000Z

223

Non-permeable substrate carrier for electroplating  

SciTech Connect (OSTI)

One embodiment relates to a substrate carrier for use in electroplating a plurality of substrates. The substrate carrier comprises a non-conductive carrier body on which the substrates are to be held. Electrically-conductive lines are embedded within the carrier body, and a plurality of contact clips are coupled to the electrically-conductive lines embedded within the carrier body. The contact clips hold the substrates in place and electrically couple the substrates to the electrically-conductive lines. The non-conductive carrier body is continuous so as to be impermeable to flow of electroplating solution through the non-conductive carrier body. Other embodiments, aspects and features are also disclosed.

Abas, Emmanuel Chua; Chen, Chen-An; Ma, Diana Xiaobing; Ganti, Kalyana Bhargava

2012-11-27T23:59:59.000Z

224

Sol-gel-derived NiO/NiAl{sub 2}O{sub 4} oxygen carriers for chemical-looping combustion by coal char  

SciTech Connect (OSTI)

This paper focuses on the investigation of Ni-based oxygen carriers for CLC by coal char. First, Al(OC{sub 3}H{sub 7}){sub 3} and Ni(NO{sub 3}){sub 2} are selected as the main raw materials to prepare sol-gel-derived NiO/NiAl{sub 2}O{sub 4} oxygen carriers. The oxygen carrier with a mass content of 60% NiO, a sintering temperature of 1300{sup o}C, and a sintering time of 6 h performs comparatively well. Second, the reduction reaction of the NiO/NiAl{sub 2}O{sub 4} oxygen carriers with char and the circular reduction/oxidation reactions of the NiO/NiAl{sub 2}O{sub 4} oxygen carriers with char/air or hydrogen/air are carried out in a thermogravimetric analysis (TGA) instrument to investigate the reactivities and chemical life of the prepared NiO/NiAl{sub 2}O{sub 4} oxygen carriers. The experimental results show that (a) when the TGA temperature is higher than 850{sup o}C, NiO/NiAl{sub 2}O{sub 4} starts to react with coal char rapidly, which indicates that CLC of coal char using NiO/NiAl{sub 2}O{sub 4} as oxygen carriers is a feasible technology of energy utilization in principle; (b) NiO/NiAl{sub 2}O{sub 4}, which maintains its activity over single-cycle reduction/oxidation reactions with char/air or multiple-cycle reduction/oxidation reactions with hydrogen/air, exhibits extremely good recyclablity; (c) the porous beehive structure of the NiO/NiAl{sub 2}O{sub 4} particle is maintained, and the sintering behavior between different particles is not observed during cyclic studies. Those experimental results prove the sol-gel-derived oxygen carrier NiO/NiAl{sub 2}O{sub 4} is capable of being used in chemical-looping combustion fueled by coal char or H{sub 2}. 51 refs., 5 figs., 5 tabs.

Haibo Zhao; Liming Liu; Baowen Wang; Di Xu; Linlin Jiang; Chuguang Zheng [Huazhong University of Science and Technology, Wuhan (China). State Key Laboratory of Coal Combustion

2008-03-15T23:59:59.000Z

225

PUBLISHED ONLINE: 14 FEBRUARY 2010 | DOI: 10.1038/NMAT2635 Enhanced absorption and carrier collection in Si  

E-Print Network [OSTI]

with a short minority carrier diffusion length, while allowing for high solar-energy-conversion efficiencies of the wires4­12 . Obtaining optimal solar-energy-conversion efficiencies for macroscopic wire-array devicesLETTERS PUBLISHED ONLINE: 14 FEBRUARY 2010 | DOI: 10.1038/NMAT2635 Enhanced absorption and carrier

Atwater, Harry

226

Energy Efficiency Indicators Methodology Booklet  

E-Print Network [OSTI]

uranium) while secondary forms cover energy contained in products or carriers resulting from the transformation or conversion

Sathaye, Jayant

2010-01-01T23:59:59.000Z

227

MULTIPLE WELL VARIABLE RATE WELL TEST ANALYSIS OF DATA FROM THE AUBURN UNIVERSITY THERMAL ENERGY STORAGE PROGRAM  

E-Print Network [OSTI]

experimental Thermal energy storage in confined aquifers. ©lAUBURN UNIVERSITY THERMAL ENERGY STORAGE PROGRM1 Christineseries of aquifer thermal energy storage field experiments.

Doughty, Christine

2012-01-01T23:59:59.000Z

228

Experimental demonstration of hot-carrier photo-current in an InGaAs quantum well solar cell  

SciTech Connect (OSTI)

An unambiguous observation of hot-carrier photocurrent from an InGaAs single quantum well solar cell is reported. Simultaneous photo-current and photoluminescence measurements were performed for incident power density 0.04–3?kW cm{sup ?2}, lattice temperature 10?K, and forward bias 1.2?V. An order of magnitude photocurrent increase was observed for non-equilibrium hot-carrier temperatures >35?K. This photocurrent activation temperature is consistent with that of equilibrium carriers in a lattice at elevated temperature. The observed hot-carrier photo-current is extracted from the well over an energy selective GaAs barrier, thus integrating two essential components of a hot-carrier solar cell: a hot-carrier absorber and an energy selective contact.

Hirst, L. C.; Walters, R. J. [U.S. Naval Research Laboratory, 4555 Overlook Ave. SW., Washington, DC 20375 (United States); Führer, M. F.; Ekins-Daukes, N. J. [Imperial College London, London SW7 2AZ (United Kingdom)

2014-06-09T23:59:59.000Z

229

Cell Phone Carriers, TV-Commercials & Branding.  

E-Print Network [OSTI]

?? Problem: As almost everyone has a cell phone today, keeping your customers is very important. An important group for cell phone carriers is young… (more)

Sköld, Robin

2009-01-01T23:59:59.000Z

230

Photon Upconversion with Hot Carriers in Plasmonic Systems  

E-Print Network [OSTI]

We propose a novel scheme of photon upconversion based on harnessing the energy of plasmonic hot carriers. Low-energy photons excite hot electrons and hot holes in a plasmonic nanoparticle, which are then injected into an adjacent semiconductor quantum well where they radiatively recombine to emit a photon of higher energy. We theoretically study the proposed upconversion scheme using Fermi-liquid theory and determine the upconversion quantum efficiency to be as high as 25% in 5 nm silver nanocubes. This upconversion scheme is linear in its operation, does not require coherent illumination, offers spectral tunability, and is more efficient than conventional upconverters.

Naik, Gururaj V

2015-01-01T23:59:59.000Z

231

Measurement of the energy, multiplicity and angular correlation of ?-rays from the thermal neutron capture reaction Gd(n, ?) using JPARC-ANNRI  

SciTech Connect (OSTI)

We conducted an experiment using the JPARC-ANNRI spectrometer to measure the energy, multiplicity and correlation of ?-rays from the neutron capture of natural gadolinium. We incorporated the GEANT4 Monte Carlo (MC) simulation into the detector, and compared the data with the results of the MC simulation. We report our data analysis and compare our data with those obtained by the MC simulation.

Ou, Iwa; Yamada, Yoshiyuki; Yano, Takatomi; Mori, Takaaki; Kayano, Tsubasa; Sakuda, Makoto [Department of Physics, Okayama University, Okayama, 700-8530 (Japan); Kimura, Atsushi; Harada, Hideo [Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai, Naka, Ibaraki 319-1195 (Japan)

2014-05-02T23:59:59.000Z

232

Success Stories: Aeroseal - Carrier Corp.  

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

Sealing in Energy Savings Sealing in Energy Savings If every home in the United States sealed its leaky HVAC ducts, the nation would save $5 billion annually in energy costs. Typical ductwork systems, both residential and commercial, lose 25-40 percent of heating and cooling energy; even newly installed systems experience 10-30 percent leakage. Solving this energy-wasting problem, once a costly, labor-intensive process, can now be achieved in four to eight hours using the Aeroseal technology funded by the DOE's Office of Energy Efficiency and Renewable Energy together with the California Institute for Energy Efficiency, the EPA and the Electric Power Research Institute (EPRI) and developed at Lawrence Berkeley National Laboratory. Aeroseal, LLC (www.aeroseal.com) commercialized the technology, and scores of Aeroseal dealers employing

233

Simplified 2DEG carrier concentration model for composite barrier AlGaN/GaN HEMT  

SciTech Connect (OSTI)

The self consistent solution of Schrodinger and Poisson equations is used along with the total charge depletion model and applied with a novel approach of composite AlGaN barrier based HEMT heterostructure. The solution leaded to a completely new analytical model for Fermi energy level vs. 2DEG carrier concentration. This was eventually used to demonstrate a new analytical model for the temperature dependent 2DEG carrier concentration in AlGaN/GaN HEMT.

Das, Palash, E-mail: d.palash@gmail.com; Biswas, Dhrubes, E-mail: d.palash@gmail.com [Indian Institute of Technology Kharagpur, Kharagpur - 721302, West Bengal (India)

2014-04-24T23:59:59.000Z

234

November 2008 Alternative Energy  

E-Print Network [OSTI]

-switching from fossil fuels to electricity as the energy carrier of choice would necessarily require a large? In this paper we will discuss a range of alternative primary energy sources and alternative energy carriers which may be used to help reach our ambitious greenhouse gas targets. ThE EnErgy ConvErSIon Ch

Pedersen, Tom

235

Advances in computational studies of energy materials  

Science Journals Connector (OSTI)

...hydrogen conversion efficiency...of water, conversion efficiencies...facilitate charge carrier separation...electron energies) with respect...record power conversion efficiency...the Coulomb energy: based on...p-type carriers, which are...

2010-01-01T23:59:59.000Z

236

AN ENERGY COST OPTIMIZATION METHOD FOR A LARGE SCALE HYBRID CENTRAL COOLING PLANT WITH MULTIPLE ENERGY SOURCES UNDER A COMPLEX ELECTRICITY COST STRUCTURE.  

E-Print Network [OSTI]

??The cooling energy cost could be a significant portion of the total energy cost for a large organization or building complex during summer. A hybrid… (more)

Guo, Yin

2012-01-01T23:59:59.000Z

237

Technical Assessment of Organic Liquid Carrier Hydrogen Storage...  

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

Technical Assessment of Organic Liquid Carrier Hydrogen Storage Systems for Automotive Applications Technical Assessment of Organic Liquid Carrier Hydrogen Storage Systems for...

238

Generation of hot carriers for photon management in future photovoltaics  

Science Journals Connector (OSTI)

Abstract The most important limitation for the efficiency of photovoltaic energy conversion is related to the mismatch between the broadband character of the solar radiation and the spectral sensitivity of solar cells. Large losses appear at both sides of the solar spectrum. Low-energy photons are not absorbed and escape conversion, whereas high-energy photons can only be utilized partially. Here, we discuss how the loss related to low-energy photons can be reduced by spectral conversion, making use of active layers of Si nanocrystals in an SiO2 matrix. As a possible solution, we consider generation of hot carriers upon sequential intraband absorption of two or more low-energy photons and present experimental data in support of this. Configurations are proposed in which efficient spectral conversion could be achieved, and their feasibilities are discussed. We also address the fast emission from Er3+ ions, purposefully introduced into the active layer, which can be used to trace the successful generation of hot carriers, and in that way serve to evaluate specific excitation schemes.

E.M.L.D. de Jong; S. Saeed; W.C. Sinke; T. Gregorkiewicz

2014-01-01T23:59:59.000Z

239

LNG carrier underwater noise in Baffin Bay  

Science Journals Connector (OSTI)

Large powerful liquid natural gas carriers may soon ply Arctic waters year round. Concern has been expressed over the impact the resulting noise will have on Arctic marine life. This study includes estimates of LNG carrier?radiated noise source levels and resulting sound levels at a given distance from the ship for a number of operating conditions. Measurements of sound propagation and ambient noise conditions in Baffin Bay are used to estimate the shipnoise levels in relation to the summertime noise background.

L. J. Leggat; H. M. Merklinger; J. L. Kennedy

1981-01-01T23:59:59.000Z

240

Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at $\\sqrt{s}= 7$ TeV  

SciTech Connect (OSTI)

A study of forward energy flow and central charged-particle multiplicity in events with W and Z bosons decaying into leptons is presented. The analysis uses a sample of 7 TeV pp collisions, corresponding to an integrated luminosity of 36 inverse picobarns, recorded by the CMS experiment at the LHC. The observed forward energy depositions, their correlations, and the central charged-particle multiplicities are not well described by the available non-diffractive soft-hadron production models. A study of about 300 events with no significant energy deposited in one of the forward calorimeters, corresponding to a pseudorapidity gap of at least 1.9 units, is also presented. An indication for a diffractive component in these events comes from the observation that the majority of the charged leptons from the (W/Z) decays are found in the hemisphere opposite to the gap. When fitting the signed lepton pseudorapidity distribution of these events with predicted distributions from an admixture of diffractive (POMPYT) and non-diffractive (PYTHIA) Monte Carlo simulations, the diffractive component is determined to be (50.0 +/- 9.3 (stat.) +/- 5.2 (syst.))%.

Chatrchyan, Serguei; et al.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Free Carrier Generation in Fullerene Acceptors and Its Effect on Polymer Photovoltaics  

E-Print Network [OSTI]

ABSTRACT: Early research on C60 led to the discovery that the absorption of photons with energy greater generate free carriers upon absorption of high-energy photons, which can be extracted under applied bias at a particular bias depends on parameters including dark current, photocurrent, and photoconductivity (current

McGehee, Michael

242

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS 1 Incorporating Hot Carrier Injection Effects into  

E-Print Network [OSTI]

's supply voltages, HC effects would almost disappear as car- riers cannot gain enough energy when approach for the nominal case. At the transistor level, a multi-mode energy- driven model for nanometer) effects in MOSFETs are caused by the acceleration of carriers (electrons or holes) under lateral electric

Sapatnekar, Sachin

243

What is there in the black box of dark energy: variable cosmological parameters or multiple (interacting) components?  

E-Print Network [OSTI]

The coincidence problems and other dynamical features of dark energy are studied in cosmological models with variable cosmological parameters and in models with the composite dark energy. It is found that many of the problems usually considered to be cosmological coincidences can be explained or significantly alleviated in the aforementioned models.

Javier Grande; Joan Sola; Hrvoje Stefancic

2007-01-08T23:59:59.000Z

244

A Spintronic Semiconductor with Selectable Charge Carriers  

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

A Spintronic Semiconductor with Selectable Charge Carriers Print A Spintronic Semiconductor with Selectable Charge Carriers Print Accentuating the Positive (or the Negative) Spintronics-a type of electronics that makes use of electron spin as well as charge-is already here to a certain extent. The discovery of giant magnetoresistance, a spin-based effect, has revolutionized the information storage industry. Beyond this, however, scientists envision the possibility of combining storage and processing functions in one integrated system. In electronics, processing is done using semiconductor materials like silicon and germanium that have the requisite properties to perform logical operations with both electrons (negative n-type charge carriers) and holes (positive p-type charge carriers). Thus, a spintronically desirable semiconductor would simultaneously have discrete spin-up and spin-down states as well as both positive and negative charge carriers. Strategies for developing spintronic semiconductors have been based on surface doping or on alloying, both of which have drawbacks such as chemical instability or reduced mobility. In BiTeI, however, electron and hole conduction is achieved without modifying the ideal crystal structure. One of the things discovered by Crepaldi et al. was that the electronic band structure of BiTeI bends in different ways near the surface depending on which layer is on top. That, in turn, means that the Fermi level (which determines a material's conductivity) can be located in either the valence band (for positive charge carriers) or the conduction band (for negative charge carriers). With techniques such as molecular-beam epitaxy and chemical vapor deposition, it is realistic to consider that regions with opposite band bending could be patterned on a substrate, opening new possibilities for the manipulation of spin-polarized states.

245

A Spintronic Semiconductor with Selectable Charge Carriers  

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

A Spintronic Semiconductor with Selectable Charge Carriers Print A Spintronic Semiconductor with Selectable Charge Carriers Print Accentuating the Positive (or the Negative) Spintronics-a type of electronics that makes use of electron spin as well as charge-is already here to a certain extent. The discovery of giant magnetoresistance, a spin-based effect, has revolutionized the information storage industry. Beyond this, however, scientists envision the possibility of combining storage and processing functions in one integrated system. In electronics, processing is done using semiconductor materials like silicon and germanium that have the requisite properties to perform logical operations with both electrons (negative n-type charge carriers) and holes (positive p-type charge carriers). Thus, a spintronically desirable semiconductor would simultaneously have discrete spin-up and spin-down states as well as both positive and negative charge carriers. Strategies for developing spintronic semiconductors have been based on surface doping or on alloying, both of which have drawbacks such as chemical instability or reduced mobility. In BiTeI, however, electron and hole conduction is achieved without modifying the ideal crystal structure. One of the things discovered by Crepaldi et al. was that the electronic band structure of BiTeI bends in different ways near the surface depending on which layer is on top. That, in turn, means that the Fermi level (which determines a material's conductivity) can be located in either the valence band (for positive charge carriers) or the conduction band (for negative charge carriers). With techniques such as molecular-beam epitaxy and chemical vapor deposition, it is realistic to consider that regions with opposite band bending could be patterned on a substrate, opening new possibilities for the manipulation of spin-polarized states.

246

A Spintronic Semiconductor with Selectable Charge Carriers  

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

A Spintronic Semiconductor with Selectable Charge Carriers Print A Spintronic Semiconductor with Selectable Charge Carriers Print Accentuating the Positive (or the Negative) Spintronics-a type of electronics that makes use of electron spin as well as charge-is already here to a certain extent. The discovery of giant magnetoresistance, a spin-based effect, has revolutionized the information storage industry. Beyond this, however, scientists envision the possibility of combining storage and processing functions in one integrated system. In electronics, processing is done using semiconductor materials like silicon and germanium that have the requisite properties to perform logical operations with both electrons (negative n-type charge carriers) and holes (positive p-type charge carriers). Thus, a spintronically desirable semiconductor would simultaneously have discrete spin-up and spin-down states as well as both positive and negative charge carriers. Strategies for developing spintronic semiconductors have been based on surface doping or on alloying, both of which have drawbacks such as chemical instability or reduced mobility. In BiTeI, however, electron and hole conduction is achieved without modifying the ideal crystal structure. One of the things discovered by Crepaldi et al. was that the electronic band structure of BiTeI bends in different ways near the surface depending on which layer is on top. That, in turn, means that the Fermi level (which determines a material's conductivity) can be located in either the valence band (for positive charge carriers) or the conduction band (for negative charge carriers). With techniques such as molecular-beam epitaxy and chemical vapor deposition, it is realistic to consider that regions with opposite band bending could be patterned on a substrate, opening new possibilities for the manipulation of spin-polarized states.

247

A Spintronic Semiconductor with Selectable Charge Carriers  

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

A Spintronic Semiconductor with Selectable Charge Carriers Print A Spintronic Semiconductor with Selectable Charge Carriers Print Accentuating the Positive (or the Negative) Spintronics-a type of electronics that makes use of electron spin as well as charge-is already here to a certain extent. The discovery of giant magnetoresistance, a spin-based effect, has revolutionized the information storage industry. Beyond this, however, scientists envision the possibility of combining storage and processing functions in one integrated system. In electronics, processing is done using semiconductor materials like silicon and germanium that have the requisite properties to perform logical operations with both electrons (negative n-type charge carriers) and holes (positive p-type charge carriers). Thus, a spintronically desirable semiconductor would simultaneously have discrete spin-up and spin-down states as well as both positive and negative charge carriers. Strategies for developing spintronic semiconductors have been based on surface doping or on alloying, both of which have drawbacks such as chemical instability or reduced mobility. In BiTeI, however, electron and hole conduction is achieved without modifying the ideal crystal structure. One of the things discovered by Crepaldi et al. was that the electronic band structure of BiTeI bends in different ways near the surface depending on which layer is on top. That, in turn, means that the Fermi level (which determines a material's conductivity) can be located in either the valence band (for positive charge carriers) or the conduction band (for negative charge carriers). With techniques such as molecular-beam epitaxy and chemical vapor deposition, it is realistic to consider that regions with opposite band bending could be patterned on a substrate, opening new possibilities for the manipulation of spin-polarized states.

248

A Spintronic Semiconductor with Selectable Charge Carriers  

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

A Spintronic Semiconductor with Selectable Charge Carriers Print A Spintronic Semiconductor with Selectable Charge Carriers Print Accentuating the Positive (or the Negative) Spintronics-a type of electronics that makes use of electron spin as well as charge-is already here to a certain extent. The discovery of giant magnetoresistance, a spin-based effect, has revolutionized the information storage industry. Beyond this, however, scientists envision the possibility of combining storage and processing functions in one integrated system. In electronics, processing is done using semiconductor materials like silicon and germanium that have the requisite properties to perform logical operations with both electrons (negative n-type charge carriers) and holes (positive p-type charge carriers). Thus, a spintronically desirable semiconductor would simultaneously have discrete spin-up and spin-down states as well as both positive and negative charge carriers. Strategies for developing spintronic semiconductors have been based on surface doping or on alloying, both of which have drawbacks such as chemical instability or reduced mobility. In BiTeI, however, electron and hole conduction is achieved without modifying the ideal crystal structure. One of the things discovered by Crepaldi et al. was that the electronic band structure of BiTeI bends in different ways near the surface depending on which layer is on top. That, in turn, means that the Fermi level (which determines a material's conductivity) can be located in either the valence band (for positive charge carriers) or the conduction band (for negative charge carriers). With techniques such as molecular-beam epitaxy and chemical vapor deposition, it is realistic to consider that regions with opposite band bending could be patterned on a substrate, opening new possibilities for the manipulation of spin-polarized states.

249

A Spintronic Semiconductor with Selectable Charge Carriers  

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

A Spintronic Semiconductor with Selectable Charge Carriers Print A Spintronic Semiconductor with Selectable Charge Carriers Print Accentuating the Positive (or the Negative) Spintronics-a type of electronics that makes use of electron spin as well as charge-is already here to a certain extent. The discovery of giant magnetoresistance, a spin-based effect, has revolutionized the information storage industry. Beyond this, however, scientists envision the possibility of combining storage and processing functions in one integrated system. In electronics, processing is done using semiconductor materials like silicon and germanium that have the requisite properties to perform logical operations with both electrons (negative n-type charge carriers) and holes (positive p-type charge carriers). Thus, a spintronically desirable semiconductor would simultaneously have discrete spin-up and spin-down states as well as both positive and negative charge carriers. Strategies for developing spintronic semiconductors have been based on surface doping or on alloying, both of which have drawbacks such as chemical instability or reduced mobility. In BiTeI, however, electron and hole conduction is achieved without modifying the ideal crystal structure. One of the things discovered by Crepaldi et al. was that the electronic band structure of BiTeI bends in different ways near the surface depending on which layer is on top. That, in turn, means that the Fermi level (which determines a material's conductivity) can be located in either the valence band (for positive charge carriers) or the conduction band (for negative charge carriers). With techniques such as molecular-beam epitaxy and chemical vapor deposition, it is realistic to consider that regions with opposite band bending could be patterned on a substrate, opening new possibilities for the manipulation of spin-polarized states.

250

Forward-backward multiplicity correlations in pp collisions at high energy in Monte Carlo model with string fusion  

E-Print Network [OSTI]

The correlations between multiplicities in two separated rapidity windows, is studied in the framework of the Monte Carlo model based on the picture of string formation in elementary collisions of colour dipoles. The hardness of the elementary collisions is defined by a transverse size of the interacting dipoles. The dependencies of the forward-backward correlation strength on the width and position of the pseudorapidity windows, as well as on transverse momentum range of observed particles were studied. It is demonstrated that taking into account of the string fusion effects improves the agreement with the available experimental data.

Kovalenko, Vladimir

2014-01-01T23:59:59.000Z

251

E-Print Network 3.0 - artificial oxygen carrier Sample Search...  

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

carrier Search Powered by Explorit Topic List Advanced Search Sample search results for: artificial oxygen carrier...

252

E-Print Network 3.0 - artificial oxygen carriers Sample Search...  

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

carriers Search Powered by Explorit Topic List Advanced Search Sample search results for: artificial oxygen carriers...

253

Development of an energy evaluation methodology to make multiple predictions of the HVAC&R system energy demand for office buildings  

Science Journals Connector (OSTI)

Abstract HVAC&R systems are the most energy consuming building services, representing approximately half of the final energy use in the building sector. Despite their significant energy use, there is a lack of a consistent and homogeneous framework to efficiently guide research, mainly due to the complexity and variety of HVAC&R systems, but also to insufficient rigor in their energy analysis. Quantifying the energy consumption characteristics of HVAC&R system is complicated, because the energy savings provided by this system depend on various factors. This research evaluates energy consumption characteristics of HVAC&R systems, with the aim of establishing a common idea for the analysis of building energy efficiency. The objective of this study is to develop an energy evaluation methodology and a simple simulation program that may be used by engineers and designers to assess the effectiveness and economic benefits of HVAC&R systems. Our approach deals with the concept of HVAC&R system energy use aggregation levels that are composed of subsystems. To carry out a techno-economical estimation of HVAC&R systems considering different types of subsystems, the matrix combination analyzed, and a total of 960 HVAC&R systems can be implemented for a large-scale office building. The methodology of energy analysis that was carried out in this study highlights how to plan and design toward utilizing the most effective HVAC&R systems.

Jinkyun Cho; Seungho Shin; Jonghurn Kim; Hiki Hong

2014-01-01T23:59:59.000Z

254

BRANDEIS UNIVERSITY RETIREMENT PLAN Salary Reduction Agreement and Authorization of Investment Carrier(s)  

E-Print Network [OSTI]

BRANDEIS UNIVERSITY RETIREMENT PLAN Salary Reduction Agreement and Authorization of Investment(s) ____________________________________________________________________________________________ Please check all that apply: Enroll in the Plan Change the Amount Contributed Change in Investment) SECTION 3: EMPLOYEE ELECTION OF INVESTMENT CARRIER(S): 1. Employee Required Contributions and University

Snider, Barry B.

255

Multiple-Filled Skutterudites: High Thermoelectric Figure of Merit through Separately Optimizing Electrical and Thermal Transports  

SciTech Connect (OSTI)

Skutterudites CoSb{sub 3} with multiple cofillers Ba, La, and Yb were synthesized and very high thermoelectric figure of merit ZT = 1.7 at 850 K was realized. X-ray diffraction of the densified multiple-filled bulk samples reveals all samples are phase pure. High-resolution scanning transmission electron microscopy (STEM) and energy dispersive X-ray spectroscopy (EDS) analysis confirm that multiple guest fillers occupy the nanoscale-cages in the skutterudites. The fillers are further shown to be uniformly distributed and the Co-Sb skutterudite framework is virtually unperturbed from atomic scale to a few micrometers. Our results firmly show that high power factors can be realized by adjusting the total filling fraction of fillers with different charge states to reach the optimum carrier density, at the same time, lattice thermal conductivity can also be significantly reduced, to values near the glass limit of these materials, through combining filler species of different rattling frequencies to achieve broad-frequency phonon scattering. Therefore, partially filled skutterudites with multiple fillers of different chemical nature render unique structural characteristics for optimizing electrical and thermal transports in a relatively independent way, leading to continually enhanced ZT values from single- to double-, and finally to multiple-filled skutterudites. The idea of combining multiple fillers with different charge states and rattling frequencies for performance optimization is also expected to be valid for other caged TE compounds.

Zhang, Weiqing [Chinese Academy of Sciences; Yang, Jiong [Chinese Academy of Sciences; Yang, Jihui [General Motors Corporation; Wang, Hsin [ORNL; Salvador, James R. [GM R& D and Planning, Warren, Michigan; Shi, Xun [General Motors Corporation-R& D; Chi, Miaofang [ORNL; Cho, Jung Y [GM R& D and Planning, Warren, Michigan; Bai, Shengqiang [Chinese Academy of Sciences; Chen, Lidong [Chinese Academy of Sciences

2011-01-01T23:59:59.000Z

256

A multiple objective decision making model for energy generation portfolio under fuzzy uncertainty: Case study of large scale investor-owned utilities in Florida  

Science Journals Connector (OSTI)

Abstract The objective of this paper is to present a methodology to evaluate the viability of developing solar photovoltaic projects for large investor-owned utilities. By taking into account the trade-off between the cost per kWh of electricity generation and total risk for an investor-owned utility, a multi-objective model of the energy generation portfolios is developed. The decision making model can determine the proportion of different energy generation sources in an investor-owned utility portfolio that reduces risk while providing the lowest cost per kWh of electricity generation possible. In order to measure the risk of the investor-owned utility for energy portfolio selection, an investigation of possible dangers and failures of energy generation portfolios is made and 9 main failure modes are identified. The failure mode and effects analysis is employed to calculate the risk priority numbers for each risk. To deal with the uncertainties of the levelized cost of electricity and risk levels of failure modes, the fuzzy method is introduced and an equivalent crisp model is derived which is then solved by employing a multiple objective particle swarm optimization algorithm. The analysis for four large scale investor-owned utilities in Florida is presented to highlight the performance of the developed optimization method.

Ziqiang Zeng; Ehsan Nasri; Abdol Chini; Robert Ries; Jiuping Xu

2015-01-01T23:59:59.000Z

257

Carrier-induced change in refractive index of InP, GaAs, and InGaAsP  

SciTech Connect (OSTI)

The authors have theoretically estimated the change in refractive index {Delta}{ital n} produced by injection of free carriers in InP, GaAs, and InGaAsP. Bandfilling (Burstein-Moss effect), band-gap shrinkage, and free-carrier absorption (plasma effect) were included. Carrier concentrations of 10{sup 16}/cm{sup 3} to 10{sup 19}/cm{sup 3} and photon energies of 0.8 to 2.0 eV were considered. Predictions of {Delta}{ital n} are in reasonably good agreement with the limited experimental data available. Refractive index changes as large as 10{sup {minus} 2} are predicted for carrier concentrations of 10{sup 18}/cm{sup 3}, suggesting that low-loss optical phase modulators and switches using carrier injection are feasible in these materials.

Bennett, B.R. (Dept. of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA (US)); Soref, R.A. (Solid State Sciences Directorate, Rome Air Development Center, Hanscom Air Force Base, Bedford, MA (US)); Del Alamo, J.A. (Dept. of Electrical Engineering and Computer Science, Massachussets Institute of Technology, Cambridge, MA (US))

1990-01-01T23:59:59.000Z

258

Multiple resonant railgun power supply  

DOE Patents [OSTI]

A multiple repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. A plurality of serially connected paired parallel rails are powered by similar power supplies. Each supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capacitor and a magnetic switch to transfer energy between the resonant circuit and the pair of parallel rails for the propelling of projectiles. The multiple serial operation permits relatively small energy components to deliver overall relatively large amounts of energy to the projectiles being propelled.

Honig, E.M.; Nunnally, W.C.

1985-06-19T23:59:59.000Z

259

Recovery Act: Novel Oxygen Carriers for Coal-fueled Chemical Looping  

SciTech Connect (OSTI)

Chemical Looping Combustion (CLC) could totally negate the necessity of pure oxygen by using oxygen carriers for purification of CO{sub 2} stream during combustion. It splits the single fuel combustion reaction into two linked reactions using oxygen carriers. The two linked reactions are the oxidation of oxygen carriers in the air reactor using air, and the reduction of oxygen carriers in the fuel reactor using fuels (i.e. coal). Generally metal/metal oxides are used as oxygen carriers and operated in a cyclic mode. Chemical looping combustion significantly improves the energy conversion efficiency, in terms of the electricity generation, because it improves the reversibility of the fuel combustion process through two linked parallel processes, compared to the conventional combustion process, which is operated far away from its thermo-equilibrium. Under the current carbon-constraint environment, it has been a promising carbon capture technology in terms of fuel combustion for power generation. Its disadvantage is that it is less mature in terms of technological commercialization. In this DOE-funded project, accomplishment is made by developing a series of advanced copper-based oxygen carriers, with properties of the higher oxygen-transfer capability, a favorable thermodynamics to generate high purity of CO{sub 2}, the higher reactivity, the attrition-resistance, the thermal stability in red-ox cycles and the achievement of the auto-thermal heat balance. This will be achieved into three phases in three consecutive years. The selected oxygen carriers with final-determined formula were tested in a scaled-up 10kW coal-fueled chemical looping combustion facility. This scaled-up evaluation tests (2-day, 8-hour per day) indicated that, there was no tendency of agglomeration of copper-based oxygen carriers. Only trace-amount of coke or carbon deposits on the copper-based oxygen carriers in the fuel reactor. There was also no evidence to show the sulphidization of oxygen carriers in the system by using the high-sulfur-laden asphalt fuels. In all, the scaled-up test in 10 kW CLC facility demonstrated that the preparation method of copper-based oxygen carrier not only help to maintain its good reactivity, also largely minimize its agglomeration tendency.

Pan, Wei-Ping; Cao, Yan

2012-11-30T23:59:59.000Z

260

Fully Solar-Powered Photoelectrochemical Conversion for Simultaneous Energy Storage and Chemical Sensing  

Science Journals Connector (OSTI)

Fully Solar-Powered Photoelectrochemical Conversion for Simultaneous Energy Storage and Chemical Sensing ... (15) Nonetheless, the storage and utilization of the oxidative energy carried by the photogenerated holes at the photoanodes are generally low, due to large overpotential for water oxidation, as well as the electric energy loss when driving charge carriers through multiple material interfaces and external circuits. ... In such an integrated device, the photogenerated electrons are utilized for H2 generation and holes for pseudocapacitive charging, so that both the reductive and oxidative energies are captured and converted. ...

Yongcheng Wang; Jing Tang; Zheng Peng; Yuhang Wang; Dingsi Jia; Biao Kong; Ahmed A. Elzatahry; Dongyuan Zhao; Gengfeng Zheng

2014-05-13T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Mineral Soils as Carriers for Rhizobium Inoculants  

Science Journals Connector (OSTI)

...looked healthier and greener than the uninoculated...example, when peat-lime pelleted clover seeds...rhizobia survive better in mineral soil-based inoculant...inoculated plants were greener and looked healthier...ENVIRON. MICROBIOL. MINERAL SOILS AS CARRIERS FOR...

W.-L. Chao; Martin Alexander

1984-01-01T23:59:59.000Z

262

Policy Strategies and Paths to promote Sustainable Energy Systems - The dynamic Invert Simulation Tool  

E-Print Network [OSTI]

strongly dominating the energy mix for heating in Vienna.premium) on the energy carrier mix, CO 2 reductions anddevelopment of the energy carrier mix is presented in Figure

Stadler, Michael; Kranzl, Lukas; Huber, Claus; Haas, Reinhard; Tsioliaridou, Elena

2006-01-01T23:59:59.000Z

263

Strong carrier localization and diminished quantum-confined Stark effect in ultra-thin high-indium-content InGaN quantum wells with violet light emission  

SciTech Connect (OSTI)

Here, we report on the optical and structural characteristics of violet-light-emitting, ultra-thin, high-Indium-content (UTHI) InGaN/GaN multiple quantum wells (MQWs), and of conventional low-In-content MQWs, which both emit at similar emission energies though having different well thicknesses and In compositions. The spatial inhomogeneity of In content, and the potential fluctuation in high-efficiency UTHI MQWs were compared to those in the conventional low-In-content MQWs. We conclude that the UTHI InGaN MQWs are a promising structure for achieving better quantum efficiency in the visible and near-ultraviolet spectral range, owing to their strong carrier localization and reduced quantum-confined Stark effect.

Ko, Suk-Min; Kwack, Ho-Sang; Park, Chunghyun; Yoo, Yang-Seok; Cho, Yong-Hoon, E-mail: yhc@kaist.ac.kr [Department of Physics and KI for the NanoCentury, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)] [Department of Physics and KI for the NanoCentury, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); Kwon, Soon-Yong [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of) [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); School of Mechanical and Advanced Materials Engineering, Ulsan National Institute of Science and Technology, Ulsan 689-798 (Korea, Republic of); Jin Kim, Hee; Yoon, Euijoon, E-mail: eyoon@snu.ac.kr [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)] [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); Si Dang, Le [Nanophysics and Semiconductors, CEA-CNRS-UJF Group, Institut Néel, CNRS Grenoble, 25 rue des Martyrs, 38042 Grenoble Cedex 9 (France)] [Nanophysics and Semiconductors, CEA-CNRS-UJF Group, Institut Néel, CNRS Grenoble, 25 rue des Martyrs, 38042 Grenoble Cedex 9 (France)

2013-11-25T23:59:59.000Z

264

Gas energy meter for inferential determination of thermophysical properties of a gas mixture at multiple states of the gas  

DOE Patents [OSTI]

A gas energy meter that acquires the data and performs the processing for an inferential determination of one or more gas properties, such as heating value, molecular weight, or density. The meter has a sensor module that acquires temperature, pressure, CO2, and speed of sound data. Data is acquired at two different states of the gas, which eliminates the need to determine the concentration of nitrogen in the gas. A processing module receives this data and uses it to perform a "two-state" inferential algorithm.

Morrow, Thomas B. (San Antonio, TX); Kelner, Eric (San Antonio, TX); Owen, Thomas E. (Helotes, TX)

2008-07-08T23:59:59.000Z

265

Modeling Minority-Carrier Lifetime Techniques That Use Transient Excess-Carrier Decay: Preprint  

SciTech Connect (OSTI)

Lifetime spectroscopy is a valuable tool for the characterization of PV materials. This paper combines modeling and experimental results to illustrate the injection-level dependent response of three transient excess-carrier decay techniques.

Johnston, S. W.; Berman, G. M.; Ahrenkiel, R. K.

2008-05-01T23:59:59.000Z

266

Electrical system for pulse-width modulated control of a power inverter using phase-shifted carrier signals and related operating methods  

DOE Patents [OSTI]

Systems and methods are provided for pulse-width modulated control of power inverter using phase-shifted carrier signals. An electrical system comprises an energy source and a motor. The motor has a first set of windings and a second set of windings, which are electrically isolated from each other. An inverter module is coupled between the energy source and the motor and comprises a first set of phase legs coupled to the first set of windings and a second set of phase legs coupled to the second set of windings. A controller is coupled to the inverter module and is configured to achieve a desired power flow between the energy source and the motor by modulating the first set of phase legs using a first carrier signal and modulating the second set of phase legs using a second carrier signal. The second carrier signal is phase-shifted relative to the first carrier signal.

Welchko, Brian A. (Torrance, CA)

2012-02-14T23:59:59.000Z

267

Development of Iron Oxide Carriers for Chemical Looping Combustion Using Sol?Gel  

Science Journals Connector (OSTI)

Development of Iron Oxide Carriers for Chemical Looping Combustion Using Sol?Gel ... Industrial & Engineering Chemistry Research (2008), 47 (6), 1747-1754 CODEN: IECRED; ISSN:0888-5885. ... Ishida, M.; Takeshita, K.; Suzuki, K.; Ohba, T. Application of FeO?AlO composite particles as solid looping material of the chemical-loop combustor Energy Fuels 2005, 19, 2514– 2518 ...

A. M. Kierzkowska; C. D. Bohn; S. A. Scott; J. P. Cleeton; J. S. Dennis; C. R. Müller

2010-04-30T23:59:59.000Z

268

Natural Ores as Oxygen Carriers in Chemical Looping Combustion  

Science Journals Connector (OSTI)

Natural Ores as Oxygen Carriers in Chemical Looping Combustion ... Chemical looping combustion (CLC) is a combustion technology that utilizes oxygen from oxygen carriers (OC), such as metal oxides, instead of air to combust fuels. ...

Hanjing Tian; Ranjani Siriwardane; Thomas Simonyi; James Poston

2013-01-02T23:59:59.000Z

269

Direct kinetic correlation of carriers and ferromagnetism in...  

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

kinetic correlation of carriers and ferromagnetism in Co2+ : ZnO. Direct kinetic correlation of carriers and ferromagnetism in Co2+ : ZnO. Abstract: We report the use of controlled...

270

Alternative Fuels Data Center: Alternative Fuel Motor Carrier Fuel Tax  

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

Fuel Motor Fuel Motor Carrier Fuel Tax to someone by E-mail Share Alternative Fuels Data Center: Alternative Fuel Motor Carrier Fuel Tax on Facebook Tweet about Alternative Fuels Data Center: Alternative Fuel Motor Carrier Fuel Tax on Twitter Bookmark Alternative Fuels Data Center: Alternative Fuel Motor Carrier Fuel Tax on Google Bookmark Alternative Fuels Data Center: Alternative Fuel Motor Carrier Fuel Tax on Delicious Rank Alternative Fuels Data Center: Alternative Fuel Motor Carrier Fuel Tax on Digg Find More places to share Alternative Fuels Data Center: Alternative Fuel Motor Carrier Fuel Tax on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Alternative Fuel Motor Carrier Fuel Tax Effective January 1, 2014, a person who operates a commercial motor vehicle

271

Influence of the Type of Oxygen Carriers on the Performance of a Hybrid Solar Chemical Looping Combustion System  

Science Journals Connector (OSTI)

A thermal analysis of a hybrid solar chemical looping combustion (Hy-Sol-CLC) system is presented to identify the energetic performance of various combinations of fuel and oxygen carriers. ... (6, 13) However, the potential advantages and disadvantages of these alternative oxygen carriers and inert materials for use in Hy-Sol-CLC systems are yet to be evaluated. ... combustion has the advantage that no energy is lost for the sepn. of CO2. ...

Mehdi Jafarian; Maziar Arjomandi; Graham J. Nathan

2014-04-09T23:59:59.000Z

272

Chemical Looping Combustion of Biomass/Coal with Natural Iron Ore as Oxygen Carrier in a Continuous Reactor  

Science Journals Connector (OSTI)

Chemical Looping Combustion of Biomass/Coal with Natural Iron Ore as Oxygen Carrier in a Continuous Reactor ... Chemical looping combustion (CLC) is a new innovative technology with inherent separation of CO2 without energy penalty. ... Experiments on chemical looping combustion of biomass/coal were conducted in a 1 kWth continuous reactor, and an Australia iron ore was selected as oxygen carrier. ...

Haiming Gu; Laihong Shen; Jun Xiao; Siwen Zhang; Tao Song

2010-12-21T23:59:59.000Z

273

Nonradiative coherent carrier captures and defect reaction at deep-level defects via phonon-kick mechanism  

SciTech Connect (OSTI)

We simulated the time evolution of electron-lattice coupling mode, and a series of nonradiative carrier captures by a deep-level defect in a semiconductor. For lattice relaxation energy of the order of the band gap, a series of coherent (athermal) electron and hole captures by a defect is possible for high carrier densities, which results in an inflation in the induced lattice vibration, which in turn enhances a defect reaction.

Wakita, Masaki; Suzuki, Kei; Shinozuka, Yuzo [Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510 (Japan)

2014-02-21T23:59:59.000Z

274

SciTech Connect: Time-resolved carrier distributions in graphene  

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

Conference: Time-resolved carrier distributions in graphene Citation Details In-Document Search Title: Time-resolved carrier distributions in graphene Time-resolved carrier...

275

Far-infrared nonlinear optics. II. ?(3) contributions from the dynamics of free carriers in semiconductors  

Science Journals Connector (OSTI)

We report the first bulk frequency tripling in the far-infrared. The experiments are carried out at 20 cm-1 in the doped semiconductors Ge, Si, and GaAs. Good power conversion efficiency is obtained (10-3). Our arrangement allows an absolute determination of the nonlinear susceptibility ?(3)(3?,?,?,?). We show that in the far-infrared, ?(3) is dominated by free-carrier contributions. Hence, our measurement gives new insight into nonlinear transport properties such as the momentum dependence of the effective mass and of the relaxation time. Furthermore strong changes of ?(3) (as well as of the absorption) are found to occur at high laser intensity above 100 kW/cm2, which we attribute to carrier heating and hot carrier transfer into higher energy-band minima.

A. Mayer and F. Keilmann

1986-05-15T23:59:59.000Z

276

Ammonia as an Alternative Energy Storage Medium for Hydrogen Fuel Cells: Scientific and Technical Review for Near-Term Stationary Power Demonstration Projects, Final Report  

E-Print Network [OSTI]

energy conversion (OTEC) systems, where “plant ships” could then bring the ammonia to shore as an energy carrier (

Lipman, Tim; Shah, Nihar

2007-01-01T23:59:59.000Z

277

Dynamics of photoexcited carriers in monolayer epitaxial graphene probed by photoluminescence in the near-infrared region  

SciTech Connect (OSTI)

We investigate the dynamics of photoexcited carriers in a single monolayer graphene at room temperature in air by femtosecond time-resolved luminescence measurements. The luminescence kinetics observed in the near-infrared region from 0.7 to 0.9 eV are analyzed based on the two-temperature model describing the cooling of thermalized carriers due to the carrier-optical-phonon coupling. The observed luminescence kinetics are well reproduced by the model, though the calculated electron temperature increases only to ?420 K at the maximum, which is much lower than the optical phonon energies. This indicates the predominance of optical phonons over acoustic phonons in the carrier-phonon interaction even at a temperature of ?400 K.

Koyama, Takeshi [Department of Applied Physics, Nagoya University, Chikusa, Nagoya 464-8603 (Japan); Ito, Yoshito; Yoshida, Kazuma [Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580 (Japan); Ago, Hiroki [Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan and Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka 816-8580 (Japan); Nakamura, Arao [Department of Applied Physics, Nagoya University, Chikusa, Nagoya 464-8603, Japan and Toyota Physical and Chemical Research Institute, Nagakute, Aichi 480-1192 (Japan)

2013-12-04T23:59:59.000Z

278

Synergetic effects of mixed copper-iron oxides oxygen carriers in chemical looping combustion  

SciTech Connect (OSTI)

Chemical looping combustion (CLC) is an emerging technology for clean energy production from fuels. CLC produces sequestration-ready CO{sub 2}-streams without a significant energy penalty. Development of efficient oxygen carriers is essential to successfully operate a CLC system. Copper and iron oxides are promising candidates for CLC. Copper oxide possesses high reactivity but it has issues with particle agglomeration due to its low melting point. Even though iron oxide is an inexpensive oxygen carrier it has a slower reactivity. In this study, mixed metal oxide carriers containing iron and copper oxides were evaluated for coal and methane CLC. The components of CuO and Fe{sub 2}O{sub 3} were optimized to obtain good reactivity while maintaining physical and chemical stability during cyclic reactions for methane-CLC and solid-fuel CLC. Compared with single metal oxygen carriers, the optimized Cu–Fe mixed oxide oxygen carriers demonstrated high reaction rate, better combustion conversion, greater oxygen usage and improved physical stability. Thermodynamic calculations, XRD, TGA, flow reactor studies and TPR experiments suggested that there is a strong interaction between CuO and Fe{sub 2}O{sub 3} contributing to a synergistic effect during CLC reactions. The amount of oxygen release of the mixed oxide carrier in the absence of a fuel was similar to that of the single metal oxides. However, in the presence of fuels, the oxygen consumption and the reaction profiles of the mixed oxide carriers were significantly better than that of the single metal oxides. The nature of the fuel not only influenced the reactivity, but also the final reduction status of the oxygen carriers during chemical looping combustion. Cu oxide of the mixed oxide was fully reduced metallic copper with both coal and methane. Fe oxide of the mixed oxide was fully reduced Fe metal with methane but it was reduced to only FeO with coal. Possible mechanisms of how the presence of CuO enhances the reduction of Fe{sub 2}O{sub 3} are discussed.

Siriwardane, Ranjani; Tian, Hanjing; Simonyi, Thomas; Poston, James

2013-06-01T23:59:59.000Z

279

Ocean Thermal Energy Conversion Mostly about USA  

E-Print Network [OSTI]

Ocean Thermal Energy Conversion History Mostly about USA 1980's to 1990's and bias towards Vega or other energy carriers to be delivered to shore... 13luisvega@hawaii.edu #12;US Federal Government OTEC period estimated at 3 to 4 years. #12;luisvega@hawaii.edu 20 Energy Carriers · OTEC energy could

280

New energy, new hazards ? The hydrogen scenario  

E-Print Network [OSTI]

"energy carrier" ? Hydrogen based economy and associated energy converters fuel cell systems are said dioxide...)1 . Besides, energy conversion yields seem to be better and finally it allows fossil fuels. Hydrogen can be used as an energy carrier for many traditional technologies such as cars (direct combustion

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "multiple energy carriers" 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

Analysis of Bose-Einstein correlations at fixed multiplicities in TeV energy $pp$ collisions in the quantum optical approach  

E-Print Network [OSTI]

The multiplicity distribution and the two-particle Bose-Einstein correlations at fixed multiplicities observed in $pp$ collisions at $\\sqrt{s}=7$ TeV by the ALICE Collaboration are analyzed by the formulae obtained in the quantum optical approach. The chaoticity parameters in the inclusive and semi-inclusive events are estimated from the analysis. Multiplicity or $k_T$ dependence of longitudinal and transverse source radii are also estimated.

N. Suzuki; M. Biyajima

2013-03-23T23:59:59.000Z

282

Evaluation of low volatile carriers for herbicides  

E-Print Network [OSTI]

-D) and 2, 4, 5-T in several carriers on greenhouse grown brush species was also studied. Llhen sprayed to simulate aerial applications, paraffin oil and jelled kerosene increased the deposit oI' 2, 4, 5-T both under the boom and at 0. 6 m and 1... no significant diff'erence in the deposit of the herbicides within the target area. Llhen applied with iv the Plicrofoil spray system, the deposition of 2, 4, 5-T in the paraffin oil:water emulsion was significantly higher than that of the diesel oil...

Helpert, Charles William

2012-06-07T23:59:59.000Z

283

Los Alamos Lab: Science Program Office, Energy Security Newsletter  

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

Fossil Energy & Environment (SPO-FE) Fossil Energy & Environment (SPO-FE) SPO FE Science AEI Nuclear Fossil Energy & Environment Home Office of Science Home Alternative Energy & Infrastructure Home Civilian Nuclear Programs All Issues Summer 2006 Winter 2006 Fall 2005 Spring 2005 Summer 2006 , Volume 2, Number 2 Download the Current Issue For Print (8.9 MB PDF--clear images but slower download) For Screen Viewing (1.2 MB PDF--quick download but low-quality images) Inside this Issue: Energy Solutions from Chemistry, Life, and Earth Sciences The Dawn of a New Era for Solar Energy Carrier multiplication and quantum dots can double the efficiency of photovoltaic panels. Cellulosic Biomass A Los Alamos scientist is helping to unlock the potential of this vast renewable resource. Microdrilling Changing the way industry approaches the fossil fuel cycle, from exploration to containment of CO2 emissions.

284

Extreme overbalance stimulations using TCP proppant carriers  

SciTech Connect (OSTI)

The tubing-conveyed perforating (TCP) system with proppant carrier releases proppant and other particulates at the moment of detonation and allows materials to be injected into the producing interval while overbalance pressure levels and injection rates are maximized. Materials released at detonation are designed to enhance near-wellbore conductivity by scouring and propping the formation. This article briefly describes the mechanics of the TCP/proppant carrier system, and then discusses field applications to date. Topics encompassed will be treatment designs in fluid--sensitive formations, stimulations near water, productivity comparisons to other techniques and recommended permeability ranges where the system has been successful. Finally, the article addresses efforts to optimize and improve the technology, including use of fast gauge data, tracer logs and a combination perforating gun/propellant sleeve system. The combination system is currently being field tested by Marathon and a group of service companies as a joint development project, and has potential to be the next major improvement in extreme overbalance stimulation technology.

Snider, P.M. [Marathon Oil Co., Houston, TX (United States); Oriold, F.D. [Canadian Perforators, Calgary, Alberta (Canada)

1996-11-01T23:59:59.000Z

285

Vibrational mode analysis of void induced coronene as a possible carrier of the astronomical aromatic infrared bands  

E-Print Network [OSTI]

Void induced di-cation coronene C23H12++ is a possible carrier of the astronomically observed polycyclic aromatic hydrocarbon (PAH). Based on density functional theory, multiple spin state analysis was done for neutral void coronene C23H12. Singlet spin state was most stable (lowest total energy). By the Jahn-Teller effect, there occurs serious molecular deformation. Point group D6h of pure coronene transformed to C2 symmetry having carbon two pentagons. Advanced singlet stable molecules were di-cation C23H12++ and di-anion C23H12- -. Molecular configuration was almost similar with neutral C23H12. However, electric dipole moment of these two charged molecules show reversed direction with 1.19 and 2.63 Debey. Calculated infrared spectrum of C23H12++ show a very likeness to observed one of two astronomical sources of HD44179 and NGC7027. Harmonic vibrational mode analysis was done for C23H12++. At 3.2 micrometer, C-H stretching at pentagons was featured. From 6.4 to 8.7 micrometer, C-C stretching mode was obser...

Ota, Norio

2015-01-01T23:59:59.000Z

286

The reduction of minority carrier lifetimes in silicon devices by gold doping as influenced by conditions encountered in their production  

E-Print Network [OSTI]

the energy gap and. recombine rath the appropriate majority carriez'. The momentum-like quantity hk for carriers in the periodic czystal lattice must be consczved ''n t!ze process. If a ozazard. -biased juncticz is suddenly reverso-biased, the ~wjection... the energy gap and. recombine rath the appropriate majority carriez'. The momentum-like quantity hk for carriers in the periodic czystal lattice must be consczved ''n t!ze process. If a ozazard. -biased juncticz is suddenly reverso-biased, the ~wjection...

Larkin, James Buford

2012-06-07T23:59:59.000Z

287

Inverse scattering series for multiple attenuation: An example with surface and internal multiples  

SciTech Connect (OSTI)

A multiple attenuation method derived from an inverse scattering series is described. The inversion series approach allows a separation of multiple attenuation subseries from the full series. The surface multiple attenuation subseries was described and illustrated in Carvalho et al. (1991, 1992). The internal multiple attenuation method consists of selecting the parts of the odd terms that are associated with removing only multiply reflected energy. The method, for both types of multiples, is multidimensional and does not rely on periodicity or differential moveout, nor does it require a model of the reflectors generating the multiples. An example with internal and surface multiples will be presented.

Araujo, F.V. [PPPG/Federal Univ. of Bahia, Salvador (Brazil); Weglein, A.B. [Schlumberger Cambridge Research (United Kingdom); Carvalho, P.M. [Petrobras SA, Rio de Janeiro (Brazil); Stolt, R.H.

1994-12-31T23:59:59.000Z

288

Ultrafast Carrier RelaxationProcesses in Advanced Concept Solar Cells  

Science Journals Connector (OSTI)

We discuss short time carrier relaxation in advanced concept solar cells conditions using ensemble Monte Carlo (EMC) simulation coupled with rate equation and thermodynamic models, to...

Goodnick, Stephen M; Honsberg, Christiana; Zou, Yongjie

289

Apoferritin Nanoparticle: A Novel and Biocompatible Carrier for...  

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

Apoferritin Nanoparticle: A Novel and Biocompatible Carrier for Enzyme Immobilization with Enhanced Activity and Stability. Apoferritin Nanoparticle: A Novel and Biocompatible...

290

Demonstration of high-speed multi-user multi-carrier CDMA visible light communication  

Science Journals Connector (OSTI)

Abstract We experimentally demonstrated a high-speed multi-user multi-carrier code-division multiple access (MC-CDMA) visible light communication (VLC) system. By employing a commercially available red light emitting diode (LED) and an avalanche photo diode (APD), we achieved a 16-user VLC system enabled by MC-CDMA, pre- and post-equalization, with an overall bit rate of 750 Mb/s over 1.5 m free-space transmission. The measured bit error ratio (BER) of each user is below the 7% pre-forward-error-correction (pre-FEC) threshold of 3.8×10?3.

Chao Yang; Yuanquan Wang; Yiguang Wang; Xingxing Huang; Nan Chi

2015-01-01T23:59:59.000Z

291

Energy and Development: Is Energy a Basic Human Right?  

E-Print Network [OSTI]

Energy and Development: Is Energy a Basic Human Right? Skype/Video presentation for senior pupils national Laboratory/DTU Denmark #12;Is energy a basic human right? · What is energy? ­ the ability to make something happen · Different kinds of energy ­ or energy carriers - fuels · What do we use energy for

292

Energy Systems Integration | OpenEI Community  

Open Energy Info (EERE)

Energy Systems Integration Energy Systems Integration Home > Features > Groups Content Group Activity By term Q & A Feeds Content type Blog entry Discussion Document Event Poll Question Keywords Author Apply Rmckeel OpenEI maintenance March 8-9, 2013 Posted by: Rmckeel 8 Mar 2013 - 14:23 We would like to inform the OpenEI community that OpenEI will be undergoing a significant software upgrade during a maintenance window this weekend. We will be upgrading the wiki and... Tags: developer, Maintenance, OpenEI Qinsun Research topics related to ESI Posted by: Qinsun 15 Nov 2012 - 13:55 · Modeling and optimization of multiple energy carriers [2-6] · ... Tags: ESI, MarketsIncentives Qinsun Prospects for Nuclear Power(Davis 2012) Posted by: Qinsun 15 Nov 2012 - 13:36 This paper analyzed the potential of nuclear power compare to other type of

293

Synergistic energy conversion processes using nuclear energy and fossil fuels  

Science Journals Connector (OSTI)

This paper reviews the methods of producing energy carriers, such as electricity, hydrocarbons and hydrogen, by utilising both nuclear energy and fossil fuels synergistically. There are many possibilities for new, innovative, synergistic processes, which combine chemical and nuclear systems for efficient, clean and economical production of energy carriers. Besides the individual processes by each form of energy to produce the energy carriers, the synergistic processes which use two primary energies to produce the energy carriers will become important with the features of resource saving, CO2 emission reduction and economic production, due to the higher conversion efficiency and low cost of nuclear heat. The synergistic processes will be indispensable to the 21st century, when efficient best-mixed supplies of available primary energies are crucial.

Masao Hori

2009-01-01T23:59:59.000Z

294

Energy loss, range, path length, time-of-flight, straggling, multiple scattering, and nuclear interaction probability: In two parts. Part 1. For 63 compounds Part 2. For elements 1 ? Z ? 92  

Science Journals Connector (OSTI)

Extensive tables have been prepared of the mean energy loss, pathlength, range, multiple scattering, pathlength straggling, time-of-flight, and nonelastic collision probability for protons of energy from 1 keV through 10 GeV in all elements having atomic number from 1 through 92, and in many compounds and mixtures. Emphasis has been placed on obtaining accurate results, particularly in the difficult low-energy and high-atomic-number regions. The accuracies of all proton range-energy parameters are tabulated. The energy loss below 20 keV was found by normalizing theoretical expressions for the ionization, excitation, and nuclear contributions to known values at 20 keV. The energy loss between 20 keV and 1.0 MeV was obtained by statistically evaluating the accuracy of the available experimental information and then performing least-squares curve fits. Above 1.0 MeV, the Bethe equation with all necessary corrections was used. New values of the adjusted ionization potentials were determined by least-squares-fitting the Bethe equation to all available energy-loss data. The polarization effect was calculated in detail for each material. Path-lengths were calculated by integrating the reciprocal of the energy losses. Ranges were obtained by use of multiple Coulomb scattering theory. The straggling calculations include electronic, elastic nuclear, and charge exchange effects. The literature search was completed in June 1979. Keys for the references used for each element are collected in Table 12. A comparison of the calculational methods used here and in other recent proton range-energy tables is presented in Table 14.

Joseph F. Janni

1982-01-01T23:59:59.000Z

295

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 35, NO. 5, SEPTEMBER/OCTOBER 19991098 Novel Multilevel Inverter Carrier-Based PWM Method  

E-Print Network [OSTI]

Multilevel Inverter Carrier-Based PWM Method Leon M. Tolbert, Senior Member, IEEE, and Thomas G. Habetler, Senior Member, IEEE Abstract The advent of the transformerless multilevel inverter topology has brought devices in each of the multiple voltage levels in the inverter. An analysis of how existing multilevel

Tolbert, Leon M.

296

On a mathematical model for hot carrier injection in semiconductors  

E-Print Network [OSTI]

On a mathematical model for hot carrier injection in semiconductors Naoufel Ben Abdallah (1) Pierre of a semiconductor device heavily depends on the injection mechanism of carriers into the active regions through by the relation V bi = U th log N + N \\Gamma ; where U th = kBT=q is the thermal voltage and N + ; N \\Gamma

Schmeiser, Christian

297

Method for sintering fuel cell electrodes using a carrier  

DOE Patents [OSTI]

A carrier is described for conveying components of a fuel cell to be sintered through a sintering furnace. The carrier comprises a metal sheet coated with a carbon-based paint, the carbon-based paint comprising an organic binder. The carbon-based paint may be an alcohol or a solvent-based paint or a water-based paint.

Donelson, R.; Bryson, E.S.

1995-03-28T23:59:59.000Z

298

Coated metal sintering carriers for fuel cell electrodes  

DOE Patents [OSTI]

A carrier is described for conveying components of a fuel cell to be sintered through a sintering furnace. The carrier comprises a metal sheet coated with a water-based carbon paint, the water-based carbon paint comprising water, powdered graphite, an organic binder, a wetting agent, a dispersing agent and a defoaming agent.

Donelson, R.; Bryson, E.S.

1998-11-10T23:59:59.000Z

299

Thermodynamics, Entropy, Information and the Efficiency of Solar Cells  

E-Print Network [OSTI]

Carrier Multiplication C max Maximal concentration factor DB Detailed Balance dc Down-Conversion E Energy (

Abrams, Zeev R.

2012-01-01T23:59:59.000Z

300

Tailoring the spin polarization in Ge/SiGe multiple quantum wells  

SciTech Connect (OSTI)

We performed spin-resolved photoluminescence measurements on Ge/SiGe multiple quantum wells with different well thickness and using different exciting power densities. The polarization of the direct emission strongly depends on the relative weight of electrons photoexcited from the light and the heavy hole subbands. The study of the polarization as a function of the exciting power highlights the role of the carrier-carrier interactions in determining spin depolarization.

Giorgioni, Anna; Pezzoli, Fabio; Gatti, Eleonora; Grilli, Emanuele; Guzzi, Mario [LNESS-Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, I-20125 Milano (Italy); Bottegoni, Federico; Cecchi, Stefano; Ciccacci, Franco; Isella, Giovanni [LNESS-Dipartimento di Fisica, Politecnico di Milano, I-20133 Milano (Italy); Trivedi, Dhara; Song, Yang [Department of Physics and Astronomy, University of Rochester, Rochester (United States); Li, Pengki [Department of Electrical and Computer Engineering, University of Rochester, Rochester (United States); Dery, Hanan [Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627 and Department of Electrical and Computer Engineering, University of Rochester, Rochester (United States)

2013-12-04T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Principles of photoelectrochemical, solar energy conversion  

Science Journals Connector (OSTI)

Photoelectrochemical devices for conversion of solar energy into both electrical energy and chemical energy are discussed with emphasis on how the ... parameters as band gap, doping level, minority carrier lifeti...

M. A. Butler; D. S. Ginley

1980-01-01T23:59:59.000Z

302

Effect of temperature on reduction of CaSO{sub 4} oxygen carrier in chemical-looping combustion of simulated coal gas in a fluidized bed reactor  

SciTech Connect (OSTI)

Chemical-looping combustion (CLC) is a promising combustion technology for gaseous and solid fuel with efficient use of energy and inherent separation of CO{sub 2}. The concept of a coal-fueled CLC system using, calcium sulfate (CaSO{sub 4}) as oxygen carrier is proposed in this study. Reduction tests of CaSO{sub 4} oxygen carrier with simulated coal gas were performed in a laboratory-scale fluidized bed reactor in the temperature range of 890-950{degree}C. A high concentration of CO{sub 2} was obtained at the initial reduction period. CaSO{sub 4} oxygen carrier exhibited high reactivity initially and decreased gradually at the late period of reduction. The sulfur release during the reduction of CaSO{sub 4} as oxygen carrier was also observed and analyzed. H{sub 2} and CO{sub 2} conversions were greatly influenced by reduction temperature. The oxygen carrier conversion and mass-based reaction rates during the reduction at typical temperatures were compared. Higher temperatures would enhance reaction rates and result in high conversion of oxygen carrier. An XRD patterns study indicated that CaS was the dominant product of reduction and the variation of relative intensity with temperature is in agreement with the solid conversion. ESEM analysis indicated that the surface structure of oxygen carrier particles changed significantly from impervious to porous after reduction. EDS analysis also demonstrated the transfer of oxygen from the oxygen carrier to the fuel gas and a certain amount of sulfur loss and CaO formation on the surface at higher temperatures. The reduction kinetics of CaSO{sub 4} oxygen carrier was explored with the shrinking unreacted-core model. The apparent kinetic parameters were obtained, and the kinetic equation well predicted the experimental data. Finally, some basic considerations on the use of CaSO{sub 4} oxygen carrier in a CLC system for solid fuels were discussed.

Song, Q.L.; Xiao, R.; Deng, Z.Y.; Shen, L.H.; Xiao, J.; Zhang, M.Y. [Southeast University, Nanjing (China)

2008-12-15T23:59:59.000Z

303

Molecular approaches to solar energy conversion: the energetic cost of charge separation from molecular-excited states  

Science Journals Connector (OSTI)

...longer-lived charge carriers shows clear...molecular-based solar energy conversion systems...monochromatic power conversion efficiency...additional energy and quantum...collecting charge carriers at the device...all solar energy conversion systems where...long-lived charge carriers. We and...

2013-01-01T23:59:59.000Z

304

Metal-Organic Heat Carrier Nanofluids  

SciTech Connect (OSTI)

Nanofluids, dispersions of metal or oxide nanoparticles in a base working fluid, are being intensively studied due to improvements they offer in thermal properties of the working fluid. However, these benefits have been erratically demonstrated and proven impacts on thermal conductivity are modest and well described from long-established effective medium theory. In this paper, we describe a new class of metal-organic heat carrier (MOHC) nanofluid that offers potential for a larger performance boost in thermal vapor-liquid compression cycles. MOHCs are nanophase porous coordination solids designed to reversibly uptake the working fluid molecules in which the MOHCs are suspended. Additional heat can be extracted in a heat exchanger or solar collector from the endothermic enthalpy of desorption, which is then released as the nanofluid transits through a power generating device such as a turboexpander. Calculations for an R123 MOHC nanofluid indicated potential for up to 15% increase in power output. Capillary tube experiments show that liquid-vapor transitions occur without nanoparticle deposition on the tube walls provided entrance Reynolds number exceeds approximately 100.

McGrail, B. Peter; Thallapally, Praveen K.; Blanchard, Jeremy; Nune, Satish K.; Jenks, Jeromy WJ; Dang, Liem X.

2013-09-01T23:59:59.000Z

305

Excess carrier generation in femtosecond-laser processed sulfur doped silicon by means of sub-bandgap illumination  

SciTech Connect (OSTI)

With Fourier-transform photocurrent spectroscopy and spectral response measurements, we show that silicon doped with sulfur by femtosecond laser irradiation generates excess carriers, when illuminated with infrared light above 1100?nm. Three distinct sub-bandgap photocurrent features are observed. Their onset energies are in good agreement with the known sulfur levels S{sup +}, S{sup 0}, and S{sub 2}{sup 0}. The excess carriers are separated by a pn-junction to form a significant photocurrent. Therefore, this material likely demonstrates the impurity band photovoltaic effect.

Guenther, Kay-Michael, E-mail: kay-michael.guenther@efzn.de [Clausthal University of Technology, EFZN, Am Stollen 19B, 38640 Goslar (Germany); Gimpel, Thomas; Ruibys, Augustinas; Kontermann, Stefan [Fraunhofer Heinrich Hertz Institute, Am Stollen 19B, 38640 Goslar (Germany); Tomm, Jens W. [Max Born Institut, Max-Born-Straße 2A, 12489 Berlin (Germany); Winter, Stefan [Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig (Germany); Schade, Wolfgang [Clausthal University of Technology, EFZN, Am Stollen 19B, 38640 Goslar (Germany); Fraunhofer Heinrich Hertz Institute, Am Stollen 19B, 38640 Goslar (Germany)

2014-01-27T23:59:59.000Z

306

Relation between charge carrier mobility and lifetime in organic photovoltaics  

Science Journals Connector (OSTI)

The relationship between charge carrier lifetime and mobility in a bulk heterojunction based organic solar cell utilizing diketopyrrolopyrole-naphthalene co-polymer and PC71BM in the photoactive blend layer is investigated using the photoinduced charge extraction by linearly increasing voltage technique. Light intensity delay time and temperature dependent experiments are used to quantify the charge carrier mobility and density as well as the temperature dependence of both. From the saturation of photoinduced current at high laser intensities it is shown that Langevin-type bimolecular recombination is present in the studied system. The charge carrier lifetime especially in Langevin systems is discussed to be an ambiguous and unreliable parameter to determine the performance of organic solar cells because of the dependence of charge carrier lifetime on charge carrier density mobility and type of recombination. It is revealed that the relation between charge mobility (?) and lifetime (?) is inversely proportional where the ?? product is independent of temperature. The results indicate that in photovoltaic systems with Langevin type bimolecular recombination the strategies to increase the charge lifetime might not be beneficial because of an accompanying reduction in charge carrier mobility. Instead the focus on non-Langevin mechanisms of recombination is crucial because this allows an increase in the charge extraction rate by improving the carrier lifetime density and mobility simultaneously.

Chellappan Vijila; Samarendra P. Singh; Prashant Sonar; Almantas Pivrikas; Bronson Philippa; Elumalai Naveen Kumar; S. Gomathy Sandhya; Sergey Gorelik; Jonathan Hobley; Akihiro Furube; Hiroyuki Matsuzaki; Ryuzi Katoh

2013-01-01T23:59:59.000Z

307

Ge doped GaN with controllable high carrier concentration for plasmonic applications  

SciTech Connect (OSTI)

Controllable Ge doping in GaN is demonstrated for carrier concentrations of up to 2.4?×?10{sup 20} cm{sup ?3}. Low temperature luminescence spectra from the highly doped samples reveal band gap renormalization and band filling (Burstein-Moss shift) in addition to a sharp transition. Infrared ellipsometry spectra demonstrate the existence of electron plasma with an energy around 3500?cm{sup ?1} and a surface plasma with an energy around 2000?cm{sup ?1}. These findings open possibilities for the application of highly doped GaN for plasmonic devices.

Kirste, Ronny; Hoffmann, Marc P.; Sachet, Edward; Bobea, Milena; Bryan, Zachary; Bryan, Isaac; Maria, Jon-Paul; Collazo, Ramón; Sitar, Zlatko [Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7919 (United States)] [Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7919 (United States); Nenstiel, Christian; Hoffmann, Axel [Institut f?r Festkörperphsyik, TU-Berlin, Hardenbergstrasse 36, 10623 Berlin (Germany)] [Institut f?r Festkörperphsyik, TU-Berlin, Hardenbergstrasse 36, 10623 Berlin (Germany)

2013-12-09T23:59:59.000Z

308

Silicon Microwire Arrays for Solar Energy-Conversion Applications  

Science Journals Connector (OSTI)

Silicon Microwire Arrays for Solar Energy-Conversion Applications ... The Si MW array geometry allows for efficient collection of photogenerated carriers from impure materials that have short minority-carrier diffusion lengths while simultaneously allowing for high optical absorption and high external quantum yields for charge-carrier collection. ...

Emily L. Warren; Harry A. Atwater; Nathan S. Lewis

2013-12-09T23:59:59.000Z

309

Hot-carrier cooling in GaAs: Quantum wells versus bulk  

Science Journals Connector (OSTI)

Hot-electron cooling dynamics in photoexcited bulk and quantum-well GaAs structures were determined using time-correlated single-photon counting of photoluminescence (PL) decay. Hot-electron cooling curves were generated from analyses of the time-resolved PL spectra. The time constant characterizing the hot-electron energy-loss rate, ?avg, was then determined, taking into account electron degeneracy and the time dependence of the quasi-Fermi-level. This analysis was also applied to earlier data obtained by Pelouch et al. with the same samples, but based on PL up-conversion experiments with carrier density) to bulk GaAs when this density is above a critical value. This critical density was found to range from high 1017 to low 1018 cm-3, depending upon the experimental technique; at the highest carrier densities, values of ?avg for quantum wells were found to be many hundreds of ps.

Y. Rosenwaks; M. C. Hanna; D. H. Levi; D. M. Szmyd; R. K. Ahrenkiel; A. J. Nozik

1993-11-15T23:59:59.000Z

310

Dual-carrier multiplication high-gain MWIR strained layer superlattice impact ionization engineered avalanche photodiodes  

E-Print Network [OSTI]

avalanche photodiodes Siddhartha Ghosha,* , Koushik Banerjeea , Qing Duana , Christoph H. Greinb , Elena A photodiodes (APDs) play a very significant role by combining both stages in a single device and thus

Krishna, Sanjay

311

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATTION (VLSI) SYSTEMS, VOL. 5, NO. 4, DECEMBER 1997 1 Energy Minimization Using Multiple Supply  

E-Print Network [OSTI]

supply voltage lines, area/delay overhead of required level shifters, and lack of design tools consumption). This scheme tends to result in smaller area overhead compared to parallel architectures. Jui by any designer who wants to use multiple supply voltages. That is, there is a trade-o between lower

Pedram, Massoud

312

Affinity Adsorbents Based on Carriers Activated by Epoxy-compounds  

Science Journals Connector (OSTI)

The review is devoted to the synthesis and applications of affinity adsorbents based on carriers activated by epoxy-compounds. The methods for the introduction of epoxy-groups into carriers of different chemical types are discussed and conditions for the immobilisation of three-dimensional spacers and low-molecular-weight and polymeric ligands on carriers containing epoxy-groups are considered. Data are presented on the properties and applications of adsorbents of this type in affinity chromatography. The bibliography includes 144 references.

B A Klyashchitskii; P V Kuznetsov

1984-01-01T23:59:59.000Z

313

Inertia of the Carrier of Electricity in Copper and Aluminum  

Science Journals Connector (OSTI)

In this experiment the mass-charge ratio of the carrier of an electric current in a metallic conductor was precisely determined. This was done by measuring the change in amplitude resulting from reversing the current in a cylindrical coil supported as a torsional pendulum. Determinations of me of the carrier were made for coils of both copper and aluminum and various current values were used in each coil. The average value obtained for me of the carrier is 5.69×10-9 gram per coulomb. The accepted value of this ratio for the electron is 5.68×10-9 gram per coulomb.

C. F. Kettering and G. G. Scott

1944-11-01T23:59:59.000Z

314

Multiple solutions and numerical analysis to the dynamic and stationary models coupling a delayed energy balance model involving latent heat and discontinuous albedo with a deep ocean  

Science Journals Connector (OSTI)

...variability of an energy-balance model with...instability in an energy balance model. Clim...differential equations. New York, NY: Springer...of some diffusive energy balance climate models...pp. 101-156. New York, NY: Academic Press...

2014-01-01T23:59:59.000Z

315

Ocean thermal plantships for production of ammonia as the hydrogen carrier.  

SciTech Connect (OSTI)

Conventional petroleum, natural gas, and coal are the primary sources of energy that have underpinned modern civilization. Their continued availability in the projected quantities required and the impacts of emission of greenhouse gases (GHGs) on the environment are issues at the forefront of world concerns. New primary sources of energy are being sought that would significantly reduce the emissions of GHGs. One such primary source that can help supply energy, water, and fertilizer without GHG emissions is available in the heretofore unexploited thermal gradients of the tropical oceans. The world's oceans are the largest natural collector and reservoir of solar energy. The potential of ocean energy is limitless for producing base-load electric power or ammonia as the hydrogen carrier and fresh water from seawater. However, until now, ocean energy has been virtually untapped. The general perception is that ocean thermal energy is limited to tropical countries. Therefore, the full potential of at-sea production of (1) ammonia as a hydrogen carrier and (2) desalinated water has not been adequately evaluated. Using ocean thermal plantships for the at-sea co-production of ammonia as a hydrogen carrier and desalinated water offer potential energy, environmental, and economic benefits that support the development of the technology. The introduction of a new widespread solution to our projected energy supply requires lead times of a decade or more. Although continuation of the ocean thermal program from the 1970s would likely have put us in a mitigating position in the early 2000s, we still have a window of opportunity to dedicate some of our conventional energy sources to the development of this renewable energy by the time new sources would be critically needed. The primary objective of this project is to evaluate the technical and economic viability of ocean thermal plantships for the production of ammonia as the hydrogen carrier. This objective is achieved by completing project tasks that consist of updating the John Hopkins University/Applied Physics Laboratory (JHU/APL) pilot plantship design and extrapolating it to commercial plantships, evaluating a new energy-efficient ammonia synthesis process, evaluating the co-production of desalinated water on plantships, and developing a conceptual design of a satellite plantships system for commercial-scale ammonia production. In addition, an industrial workshop was organized to present the results and develop future goals for commercialization of ocean thermal plantships by 2015. The following goals, arranged in chronological order, were examined at the workshop: (1) Global displacement of petroleum-fuel-based (diesel, fuel oil, naphtha) power generation for freeing up these fuels for transportation, chemical feedstock, and other high-valued uses; (2) At-sea production of desalinated water for regions of critical water shortages; (3) Displacement of carbon-based feed stocks and energy for production of ammonia fertilizers; (4) Development of hydrogen supply to allow economic processing of heavy crude oils and upgrading oil sands; (5) Development of ammonia-fueled distributed energy to displace natural-gas fueled power generation to free up natural gas for higher-value uses and the mitigation of issues associated with imported liquefied natural gas (LNG); and (6) Use of ammonia as a hydrogen carrier for transportation.

Panchal, C.B.; Pandolfini, P. P.; Kumm, W. H.; Energy Systems; Johns Hopkins Univ.; Arctic Energies, Ltd.

2009-12-02T23:59:59.000Z

316

Renewable Hydrogen Carrier „ Carbohydrate: Constructing the Carbon-Neutral Carbohydrate Economy  

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

Energies 2011, 4, 254-275; doi:10.3390/en4020254 Energies 2011, 4, 254-275; doi:10.3390/en4020254 energies ISSN 1996-1073 www.mdpi.com/journal/energies Review Renewable Hydrogen Carrier - Carbohydrate: Constructing the Carbon-Neutral Carbohydrate Economy Y.-H. Percival Zhang 1,2,3,4, * and Jonathan R. Mielenz 3,5 1 Biological Systems Engineering Department, 210-A Seitz Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA 2 Institute for Critical Technology and Applied Sciences (ICTAS) Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA 3 DOE BioEnergy Science Center (BESC), Oak Ridge, TN 37831, USA; E-Mail: mielenzjr@ornl.gov 4 Gate Fuels Inc. 3107 Alice Drive, Blacksburg, VA 24060, USA 5 Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

317

E-Print Network 3.0 - accelerated charge carriers Sample Search...  

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

carrier-dynamics simulation of terahertz emission from photoconductive E. Castro-Camus,* J. Lloyd-Hughes, and M. B. Johnston Summary: is the acceleration of the carrier...

318

Economic Analysis of Production and Use of Hydrogen From Solar Energy, Wind, Hydropower and Biomass  

Science Journals Connector (OSTI)

In the vision of global hydrogen economy, hydrogen produced with renewable energy is seen as one of the cleanest final energy carriers.

Amela Ajanovic; Reinhard Haas…

2009-01-01T23:59:59.000Z

319

Bimetallic Fe-Ni Oxygen Carriers for Chemical Looping Combustion  

SciTech Connect (OSTI)

The relative abundance, low cost, and low toxicity of iron make Fe-based oxygen carriers of great interest for chemical looping combustion (CLC), an emerging technology for clean and efficient combustion of fossil and renewable fuels. However, Fe also shows much lower reactivity than other metals (such as Ni and Cu). Here, we demonstrate strong improvement of Fe-based carriers by alloying the metal phase with Ni. Through a combination of carrier synthesis and characterization with thermogravimetric and fixed-bed reactor studies, we demonstrate that the addition of Ni results in a significant enhancement in activity as well as an increase in selectivity for total oxidation. Furthermore, comparing alumina and ceria as support materials highlights the fact that reducible supports can result in a strong increase in oxygen carrier utilization.

Bhavsar, Saurabh; Veser, Goetz

2013-11-06T23:59:59.000Z

320

Liguid and Solid Carriers Group - Strategic Directions for Hydrogen...  

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

Barriers Lack of comparative systems analysis of carrier options and alternatives Nanotubes offer promise but require extensive R&D High wt.kg H 2 for reversible hydride...

Note: This page contains sample records for the topic "multiple energy carriers" 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

Low temperature carrier transport properties in isotopically controlled germanium  

SciTech Connect (OSTI)

Investigations of electronic and optical properties of semiconductors often require specimens with extremely homogeneous dopant distributions and precisely controlled net-carrier concentrations and compensation ratios. The previous difficulties in fabricating such samples are overcome as reported in this thesis by growing high-purity Ge single crystals of controlled {sup 75}Ge and {sup 70}Ge isotopic compositions, and doping these crystals by the neutron transmutation doping (NTD) technique. The resulting net-impurity concentrations and the compensation ratios are precisely determined by the thermal neutron fluence and the [{sup 74}Ge]/[{sup 70}Ge] ratios of the starting Ge materials, respectively. This method also guarantees unprecedented doping uniformity. Using such samples the authors have conducted four types of electron (hole) transport studies probing the nature of (1) free carrier scattering by neutral impurities, (2) free carrier scattering by ionized impurities, (3) low temperature hopping conduction, and (4) free carrier transport in samples close to the metal-insulator transition.

Itoh, K.

1994-12-01T23:59:59.000Z

322

Right-of-Way for Carrier Facilities (South Dakota)  

Broader source: Energy.gov [DOE]

This legislation establishes right-of-way for carrier pipelines, as well as restrictions on the width of lands used for pipeline facilities. This legislation also applies to electricity...

323

Ultrafast hot-carrier-dominated photocurrent in graphene  

E-Print Network [OSTI]

and high-speed optical modulators16 . Photo-excited carriers that have not cooled to the temperature) remain, such as whether the built-in field or the photo-thermoelectric effect domi- nates

Cobden, David

324

Dynamic Interdependence in Jet Fuel Prices and Air Carrier Revenues  

Science Journals Connector (OSTI)

Volatility in fuel prices and its impact on air carrier firms ... (IATA), the global airline industry’s fuel cost is estimated to be $207 billion ... is almost five times the $44 billion fuel expenses in 2003.

Bahram Adrangi; Richard D. Gritta; Kambiz Raffiee

2014-03-01T23:59:59.000Z

325

Why Study Energy? Chapter 1 1 Why Study Energy?  

E-Print Network [OSTI]

environmental and economic questions. The cost of conversion to convenient energy carriers may be high, as mayWhy Study Energy? Chapter 1 1-1 1 Why Study Energy? Energy use by people provides enormous benefits, but harmful side-effects are involved, and new challenges are created as energy use continues to grow

Edwards, Paul N.

326

Energy  

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

Energy newsroomassetsimagesenergy-icon.png Energy Research into alternative forms of energy, and improving and securing the power grid, is a major national security...

327

Three-dimensional transient model for time-domain free-carrier absorption measurement of excess carriers in silicon wafers  

SciTech Connect (OSTI)

A three-dimensional transient model for time-domain (modulated) free-carrier absorption (FCA) measurement was developed to describe the transport dynamics of photo-generated excess carriers in silicon (Si) wafers. With the developed transient model, numerical simulations were performed to investigate the dependences of the waveforms of the transient FCA signals on the electronic transport parameters of Si wafers and the geometric parameters of the FCA experiment. Experimental waveforms of FCA signals of both n- and p-type Si wafers with resistivity ranging 1–38 ?·cm were then fitted to the three-dimensional transient model to extract simultaneously and unambiguously the transport parameters of Si wafers, namely, the carrier lifetime, the carrier diffusion coefficient, and the front surface recombination velocity via multi-parameter fitting. A basic agreement between the extracted parameter values and the literature values was obtained.

Ren, Shengdong; Huang, Qiuping [Institute of Optics and Electronics, Chinese Academy of Sciences, P. O. Box 350, Shuangliu, Chengdu, Sichuan 610209 (China); University of the Chinese Academy of Sciences, Beijing 100039 (China); Li, Bincheng, E-mail: bcli@ioe.ac.cn [Institute of Optics and Electronics, Chinese Academy of Sciences, P. O. Box 350, Shuangliu, Chengdu, Sichuan 610209 (China)

2013-12-28T23:59:59.000Z

328

Multiple magnetic barriers in graphene  

Science Journals Connector (OSTI)

We study the behavior of charge carriers in graphene in inhomogeneous perpendicular magnetic fields. We consider two types of one-dimensional magnetic profiles, uniform in one direction: a sequence of N magnetic barriers and a sequence of alternating magnetic barriers and wells. In both cases, we compute the transmission coefficient of the magnetic structure by means of the transfer-matrix formalism and the associated conductance. In the first case the structure becomes increasingly transparent upon increasing N at fixed total magnetic flux. In the second case we find strong wave-vector filtering and resonant effects. We also calculate the band structure of a periodic magnetic superlattice and find a wave-vector-dependent gap around zero energy.

Luca Dell’Anna and Alessandro De Martino

2009-01-26T23:59:59.000Z

329

Multiple solutions and numerical analysis to the dynamic and stationary models coupling a delayed energy balance model involving latent heat and discontinuous albedo with a deep ocean  

Science Journals Connector (OSTI)

...6. Funding statement The research of J.I.D. and L.T...2014 Parameter estimation for energy balance models with memory...Diaz, and II Vrabie. 2001 An abstract approximate controllability...analysis of some diffusive energy balance climate models. Mathematics...

2014-01-01T23:59:59.000Z

330

A mechanistic investigation of a calcium-based oxygen carrier for chemical looping combustion  

SciTech Connect (OSTI)

Chemical looping combustion (CLC) has been suggested as an energy-efficient method for the capture of carbon dioxide from combustion. It is indirect combustion by the use of an oxygen carrier, which can be used for CO{sub 2} capture in power-generating processes. The possibility of CLC using a calcium-based oxygen carrier is investigated in this paper. In the air reactor air is supplied to oxidize CaS to CaSO{sub 4}, where oxygen is transferred from air to the oxygen carrier; the reduction of CaSO{sub 4} to CaS takes place in the fuel reactor. The exit gas from the fuel reactor is CO{sub 2} and H{sub 2}O. After condensation of water, almost pure CO{sub 2} could be obtained. The thermodynamic and kinetic problem of the reduction reactions of CaSO{sub 4} with CO and H{sub 2} and the oxidization reactions of CaS with O{sub 2} is discussed in the paper to investigate the technique possibility. To prevent SO{sub 2} release from the process of chemical looping combustion using a calcium-based oxygen carrier, thermochemical CaSO{sub 4} reduction and CaS oxidation are discussed. Thermal simulation experiments are carried out using a thermogravimetric analyzer (TGA). The properties of the products are characterized by Fourier transform infrared (FT-IR) spectroscopy and X-ray diffractometry (XRD), and the optimal reaction parameters are evaluated. The effects of reaction temperature, reductive gas mixture, and oxygen partial pressure on the composition of flue gas are discussed. The suitable temperature of the air reactor is between 1050 and 1150 C and the optimal temperature of the fuel reactor between 900 and 950 C. (author)

Shen, Laihong; Zheng, Min; Xiao, Jun; Xiao, Rui [Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing 210096 (China)

2008-08-15T23:59:59.000Z

331

Photovoltaic Energy Conversion  

E-Print Network [OSTI]

Photovoltaic Energy Conversion Frank Zimmermann #12;Solar Electricity Generation Consumes no fuel Make solar cells more efficient Theoretical energy conversion efficiency limit of single junction-bandgap photons are not absorbed: Carrier relaxation to band edges: Photon energy exceeding bandgap is lost

Glashausser, Charles

332

Research Program - Center for Solar and Thermal Energy Conversion  

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

We investigate the molecular and structural origins of energy conversion (absorption, carrier generation and recombination processes, transport) phenomena in organic and hybrid...

333

An overview of the progress in photoelectrochemical energy conversion  

Science Journals Connector (OSTI)

An overview of the progress in photoelectrochemical energy conversion ... Kinetic studies of carrier transport and recombination at the n-silicon methanol interface ...

Bruce Parkinson

1983-01-01T23:59:59.000Z

334

Welcome - Center for Solar and Thermal Energy Conversion  

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

To Bridge LEDs' Green Gap, Scientists Think Small ... Really Small Read about CSTEC's latest Research Energy Transport in Organic and Hybrid Systems Absorption and Carrier...

335

Investigation of the spectrum of high-energy muons by the method of multiple interactions on the basis of data from the Baksan underground scintillation telescope  

Science Journals Connector (OSTI)

Experimental data obtained with the aid of the Baksan underground scintillation telescope over a long period of its operation are analyzed with the aim of searches for an excess flux of ultrahigh-energy (?100 TeV...

A. G. Bogdanov; R. P. Kokoulin; Yu. F. Novoseltsev…

2009-12-01T23:59:59.000Z

336

Time-Resolved Charge Carrier Generation from Higher Lying Excited States in Conjugated Polymers  

Science Journals Connector (OSTI)

Sub-ps three-pulse transient differential transmission spectroscopy using two excitation pulses is used to directly investigate the generation of charge carriers in ladder-type poly(para)phenyl in bulk film. The role of higher excited singlet states of both even and odd symmetry is examined and the dynamics of the major processes involved is described quantitatively. The charge generation efficiency is found to depend strongly on the delay between the two excitation pulses. This is explained by the interplay between internal conversion, excitation energy migration, and on-site vibronic relaxation.

C. Gadermaier; G. Cerullo; G. Sansone; G. Leising; U. Scherf; G. Lanzani

2002-08-26T23:59:59.000Z

337

Hydrogen Fuel Cell Basics | Department of Energy  

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

Your H2IQ Hydrogen Fuel Cell Basics Hydrogen Fuel Cell Basics Hydrogen is a versatile energy carrier that can be used to power nearly every end-use energy need. The fuel...

338

Energy Information Handbook: Applications for Energy-Efficient Building Operations  

E-Print Network [OSTI]

are used to reveal energy waste and opportunities forand therefore energy waste, and should be investigated.20%, introducing energy waste and part wear. If multiple

Granderson, Jessica

2013-01-01T23:59:59.000Z

339

Separation of Olefin/Paraffin Mixtures with Carrier Facilitated Membrane Final Report  

SciTech Connect (OSTI)

This document describes the results of a DOE funded joint effort of Membrane Technology and Research Inc. (MTR), SRI International (SRI), and ABB Lummus (ABB) to develop facilitated transport membranes for olefin/paraffin separations. Currently, olefin/paraffin separation is done by distillation—an extremely energy-intensive process because of the low relative volatilities of olefins and paraffins. If facilitated transport membranes could be successfully commercialized, the potential energy savings achievable with this membrane technology are estimated to be 48 trillion Btu per year by the year 2020. We discovered in this work that silver salt-based facilitated transport membranes are not stable even in the presence of ideal olefin/paraffin mixtures. This decline in membrane performance appears to be caused by a previously unrecognized phenomenon that we have named olefin conditioning. As the name implies, this mechanism of performance degradation becomes operative once a membrane starts permeating olefins. This project is the first study to identify olefin conditioning as a significant factor impacting the performance of facilitated olefin transport membranes. To date, we have not identified an effective strategy to mitigate the impact of olefin conditioning. other than running at low temperatures or with low olefin feed pressures. In our opinion, this issue must be addressed before further development of facilitated olefin transport membranes can proceed. In addition to olefin conditioning, traditional carrier poisoning challenges must also be overcome. Light, hydrogen, hydrogen sulfide, and acetylene exposure adversely affect membrane performance through unwanted reaction with silver ions. Harsh poisoning tests with these species showed useful membrane lifetimes of only one week. These tests demonstrate a need to improve the stability of the olefin complexing agent to develop membranes with lifetimes satisfactory for commercial application. A successful effort to improve membrane coating solution stability resulted in the finding that membrane performance loss could be reversed for all poisoning cases except hydrogen sulfide exposure. This discovery offers the potential to extend membrane lifetime through cyclic regeneration. We also found that certain mixed carriers exhibited greater stability in reducing environments than exhibited by silver salt alone. These results offer promise that solutions to deal with carrier poisoning are possible. The main achievement of this program was the progress made in gaining a more complete understanding of the membrane stability challenges faced in the use of facilitated olefin transport membranes. Our systematic study of facilitated olefin transport uncovered the full extent of the stability challenge, including the first known identification of olefin conditioning and its impact on membrane development. We believe that significant additional fundamental research is required before facilitated olefin transport membranes are ready for industrial implementation. The best-case scenario for further development of this technology would be identification of a novel carrier that is intrinsically more stable than silver ions. If the stability problems could be largely circumvented by development of a new carrier, it would provide a clear breakthrough toward finally recognizing the potential of facilitated olefin transport. However, even if such a carrier is identified, additional development will be required to insure that the membrane matrix is a benign host for the olefin-carrier complexation reaction and shows good long-term stability.

Merkel, T.C.; Blanc, R.; Zeid, J.; Suwarlim, A.; Firat, B.; Wijmans, H.; Asaro, M. (SRI); Greene, M. (Lummus)

2007-03-12T23:59:59.000Z

340

Review Lecture: Energy States of Proteins, Enzymes and Membranes  

Science Journals Connector (OSTI)

...phase. All the different energy states have been put to...and within membranes in energy conversion from charge separation to ATP formation. Energy states of proteins, enzymes...Journal Article Review | 0 Carrier Proteins 0 Cytochrome...

1978-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

International Institute for Carbon-Neutral Energy Research Outline...  

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

2 Waste of material M in im iz e M in im iz e Energy Sources and Materials Energy Carrier Energy Conversion CO 2 Capture & Sequestration or conversion to a fuel Waste Production...

342

Method and apparatus for controlling carrier envelope phase  

DOE Patents [OSTI]

A chirped pulse amplification laser system. The system generally comprises a laser source, a pulse modification apparatus including first and second pulse modification elements separated by a separation distance, a positioning element, a measurement device, and a feedback controller. The laser source is operable to generate a laser pulse and the pulse modification apparatus operable to modify at least a portion of the laser pulse. The positioning element is operable to reposition at least a portion of the pulse modification apparatus to vary the separation distance. The measurement device is operable to measure the carrier envelope phase of the generated laser pulse and the feedback controller is operable to control the positioning element based on the measured carrier envelope phase to vary the separation distance of the pulse modification elements and control the carrier envelope phase of laser pulses generated by the laser source.

Chang, Zenghu (Manhattan, KS); Li, Chengquan (Sunnyvale, CA); Moon, Eric (Manhattan, KS)

2011-12-06T23:59:59.000Z

343

Multiple Factors Affecting Cellular Redox Status and Energy Metabolism Modulate Hypoxia-Inducible Factor Prolyl Hydroxylase Activity In Vivo and In Vitro  

Science Journals Connector (OSTI)

...use of these cells allowed us to monitor GHO hydroxylation status without using proteasome inhibitors...found that MitoQ could not help us to distinguish between these...factors affecting cellular redox status and energy metabolism modulate hypoxia-inducible...

Yi Pan; Kyle D. Mansfield; Cara C. Bertozzi; Viktoriya Rudenko; Denise A. Chan; Amato J. Giaccia; M. Celeste Simon

2006-11-13T23:59:59.000Z

344

Test probe for surface mounted leadless chip carrier  

DOE Patents [OSTI]

A test probe for a surface mounted leadless chip carrier is disclosed. The probe includes specially designed connector pins which allow size reductions in the probe. A thermoplastic housing provides spring action to ensure good mechanical and electrical contact between the pins and the contact strips of a leadless chip carrier. Other features include flexible wires molded into the housing and two different types of pins alternately placed in the housing. These features allow fabrication of a smaller and simpler test probe. 1 fig.

Meyer, K.L.; Topolewski, J.

1987-10-02T23:59:59.000Z

345

Ris Energy Report 3 Introduction  

E-Print Network [OSTI]

5.4 Risø Energy Report 3 Introduction One reason to look seriously at hydrogen as an energy carrier higher useful energy conversion efficiencies than simple ICEs, they are very attractive in automotive- fuelled gas turbines suitable for road vehicles. When used with other energy conversion technologies

346

Temperature dependent photoexcited carrier dynamics in multiferroic BiFeO{sub 3} film: A hidden phase transition  

SciTech Connect (OSTI)

The ultrafast carrier dynamics of the multiferroic BiFeO{sub 3} film in a broad temperature range is investigated using optical pump-probe spectroscopy. The photoexcited electrons release their energy with optical phonons emission through electron-phonon coupling in about 1 ps. The following intermediate process is identified as dynamical spin-lattice coupling in several picoseconds. Furthermore, the peak values of the optical reflectivity and the time constants of carrier relaxation channels show significant changes while the temperature varies from 137.5?K to around 195?K, this aligns with the previously reported hidden phase transition. Our study demonstrates that ultrafast spectroscopy is a sensitive method to look into the dynamical interactions among the on-site high-energy electrons accumulated in the p conduction band of Bi, coherent optical phonon, as well as the spin degree of freedom. These features play crucial roles in the characterization of phase transitions.

Zhang, Zeyu; Jin, Zuanming; Pan, Qunfeng; Xu, Yue; Lin, Xian; Ma, Guohong, E-mail: ghma@staff.shu.edu.cn, E-mail: cheng@uow.edu.au [Department of Physics, Shanghai University, Shanghai 200444 (China); Cheng, Zhenxiang, E-mail: ghma@staff.shu.edu.cn, E-mail: cheng@uow.edu.au [Department of Physics, Shanghai University, Shanghai 200444 (China); Institute for Superconducting and Electronic Materials, University of Wollongong, New South Wales 2500 (Australia)

2014-04-14T23:59:59.000Z

347

INTERACTING COSMIC RAYS WITH MOLECULAR CLOUDS: A BREMSSTRAHLUNG ORIGIN OF DIFFUSE HIGH-ENERGY EMISSION FROM THE INNER 2 Degree-Sign Multiplication-Sign 1 Degree-Sign OF THE GALACTIC CENTER  

SciTech Connect (OSTI)

The high-energy activity in the inner few degrees of the Galactic center is traced by diffuse radio, X-ray, and {gamma}-ray emission. The physical relationship between different components of diffuse gas emitting at multiple wavelengths is a focus of this work. We first present radio continuum observations using the Green Bank Telescope and model the nonthermal spectrum in terms of a broken power-law distribution of {approx}GeV electrons emitting synchrotron radiation. We show that the emission detected by Fermi is primarily due to nonthermal bremsstrahlung produced by the population of synchrotron emitting electrons in the GeV energy range interacting with neutral gas. The extrapolation of the electron population measured from radio data to low and high energies can also explain the origin of Fe I 6.4 keV line and diffuse TeV emission, as observed with Suzaku, XMM-Newton, Chandra, and the H.E.S.S. observatories. The inferred physical quantities from modeling multiwavelength emission in the context of bremsstrahlung emission from the inner {approx}300 Multiplication-Sign 120 pc of the Galactic center are constrained to have the cosmic-ray ionization rate {approx}1-10 Multiplication-Sign 10{sup -15} s{sup -1}, molecular gas heating rate elevating the gas temperature to 75-200 K, fractional ionization of molecular gas 10{sup -6}-10{sup -5}, large-scale magnetic field 10-20 {mu}G, the density of diffuse and dense molecular gas {approx}100 and {approx}10{sup 3} cm{sup -3} over 300 pc and 50 pc path lengths, and the variability of Fe I K{alpha} 6.4 keV line emission on yearly timescales. Important implications of our study are that GeV electrons emitting in radio can explain the GeV {gamma}-rays detected by Fermi and that the cosmic-ray irradiation model, like the model of the X-ray irradiation triggered by past activity of Sgr A*, can also explain the origin of the variable 6.4 keV emission from Galactic center molecular clouds.

Yusef-Zadeh, F.; Roberts, D. A.; Royster, M. [Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208 (United States)] [Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208 (United States); Hewitt, J. W. [Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)] [Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Wardle, M. [Department of Physics and Astronomy, and Research Center for Astronomy, Astrophysics and Astrophotonics, Macquarie University, Sydney, NSW 2109 (Australia)] [Department of Physics and Astronomy, and Research Center for Astronomy, Astrophysics and Astrophotonics, Macquarie University, Sydney, NSW 2109 (Australia); Tatischeff, V. [Center de Spectrometrie Nucleaire et de Spectrometrie de Massse, IN2P3/CNRS and Univ. Paris-Sud, F-91405 Orsay Campus (France)] [Center de Spectrometrie Nucleaire et de Spectrometrie de Massse, IN2P3/CNRS and Univ. Paris-Sud, F-91405 Orsay Campus (France); Cotton, W. [NRAO, 520 Edgemont Road, Charlottesville, VA 22903 (United States)] [NRAO, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Uchiyama, H.; Nobukawa, M.; Tsuru, T. G. [Cosmic Ray Group, Physics, Kyoto University, Kitashirakawa-Oiwake-Cho, Sakyo, Kyoto 606-8502 (Japan)] [Cosmic Ray Group, Physics, Kyoto University, Kitashirakawa-Oiwake-Cho, Sakyo, Kyoto 606-8502 (Japan); Heinke, C. [Department of Physics, Room 238 CEB, University of Alberta, Edmonton, AB T6G 2G7 (Canada)] [Department of Physics, Room 238 CEB, University of Alberta, Edmonton, AB T6G 2G7 (Canada)

2013-01-01T23:59:59.000Z

348

International Energy Agency Activities Carolyn C. Elam, Catherine E. Grgoire Padr and Pamela L. Spath  

E-Print Network [OSTI]

for up-grading fossil-based energy carriers-- will in the future increasingly become an energy carrier time frames must be understood and implemented. · All sustainable energy sources require conversion energy sources by providing an effective means of storage, distribution and conversion; moreover

349

Energy  

Science Journals Connector (OSTI)

Energy ... “Scientific Challenges in Sustainable Energy Technology,” by Nathan S. Lewis of the California Institute of Technology, summarizes data on energy resources and analyses the implications for human society. ... ConfChem Conference on Educating the Next Generation: Green and Sustainable Chemistry—Solar Energy: A Chemistry Course on Sustainability for General Science Education and Quantitative Reasoning ...

John W. Moore

2008-07-01T23:59:59.000Z

350

Renewable Hydrogen Carrier Carbohydrate: Constructing the Carbon-Neutral Carbohydrate Economy  

SciTech Connect (OSTI)

Abstract The hydrogen economy presents an appealing energy future but its implementation must solve numerous problems ranging from low-cost sustainable production, high-density storage, costly infrastructure, to eliminating safety concern. The use of renewable carbohydrate as a high-density hydrogen carrier and energy source for hydrogen production is possible due to emerging cell-free synthetic biology technology called cell-free synthetic pathway biotransformation (SyPaB). Assembly of numerous enzymes and co-enzymes in vitro can create complicated set of biological reactions or pathways that microorganisms cannot complete, for example, C6H10O5 (aq) + 7 H2O (l) 12 H2 (g) + 6 CO2 (g) (PLoS One 2007, 2:e456). Thanks to 100% selectivity of enzymes, modest reaction conditions, and high-purity of generated hydrogen, carbohydrate is a promising hydrogen carrier for end users. Gravimetric density of carbohydrate is 14.8 H2 mass% if water can be recycled from PEM fuel cells or 8.33% H2 mass% without water recycling. Renewable carbohydrate can be isolated from plant biomass or would be produced from a combination of solar electricity/hydrogen and carbon dioxide fixation mediated by high-efficiency artificial photosynthesis mediated by SyPaB. The construction of this carbon-neutral carbohydrate economy would address numerous sustainability challenges, such as electricity and hydrogen storage, CO2 fixation and long-term storage, water conservation, transportation fuel production, plus feed and food production.

Zhang, Y.-H. Percival [Virginia Polytechnic Institute and State University (Virginia Tech); Mielenz, Jonathan R [ORNL

2011-01-01T23:59:59.000Z

351

Heating subsurface formations by oxidizing fuel on a fuel carrier  

DOE Patents [OSTI]

A method of heating a portion of a subsurface formation includes drawing fuel on a fuel carrier through an opening formed in the formation. Oxidant is supplied to the fuel at one or more locations in the opening. The fuel is combusted with the oxidant to provide heat to the formation.

Costello, Michael; Vinegar, Harold J.

2012-10-02T23:59:59.000Z

352

New advances in symbol timing synchronization of single-carrier, multi-carrier and space-time multiple-antenna systems  

E-Print Network [OSTI]

to the O?ce of Graduate Studies of Texas A&M University in partial fulflllment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Erchin Serpedin Committee Members, Costas N. Georghiades Andrew K. Chan Siu A. Chin... to my advisor, Profes- sor Erchin Serpedin, who has been an excellent teacher and an inspiring advisor. I have to thank him for his patience in reviewing and giving precious advice on my research work. I also have to thank Professor Costas N. Georghiades...

Wu, Yik Chung

2005-11-01T23:59:59.000Z

353

Recombination dynamics and carrier lifetimes in highly mismatched ZnTeO alloys  

SciTech Connect (OSTI)

This study investigates the recombination dynamics in highly mismatched ZnTeO alloys using time-resolved photoluminescence (PL) spectroscopy. The large PL energy redshift with increasing O content and the disappearance of the ZnTe emission verify the O-induced conduction band anticrossing effect. The incorporation of O generates electron localization below the E{sub ?} conduction subband tail, which provide additional optical transitions and cause complex recombination mechanisms. Photoexcited free electrons in both the E{sub +} and the E{sub ?} conduction subbands favor rapid relaxation to low energy states. Additionally, temperature-independent long carrier lifetimes (>130.0?ns) that are induced by localized electrons increase with O concentration.

Lin, Yan-Cheng, E-mail: bryanlin@mail.nctu.edu.tw, E-mail: wuchingchou@mail.nctu.edu.tw; Tasi, Ming-Jui; Chou, Wu-Ching, E-mail: bryanlin@mail.nctu.edu.tw, E-mail: wuchingchou@mail.nctu.edu.tw; Chang, Wen-Hao; Chen, Wei-Kuo [Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan (China)] [Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan (China); Tanaka, Tooru [Department of Electrical and Electronic Engineering, Saga University, Saga 840-8502 (Japan) [Department of Electrical and Electronic Engineering, Saga University, Saga 840-8502 (Japan); PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012 (Japan); Guo, Qixin [Synchrotron Light Application Center, Saga University, 1 Honjo, Saga 840-8502 (Japan)] [Synchrotron Light Application Center, Saga University, 1 Honjo, Saga 840-8502 (Japan); Nishio, Mitsuhiro [Department of Electrical and Electronic Engineering, Saga University, Saga 840-8502 (Japan)] [Department of Electrical and Electronic Engineering, Saga University, Saga 840-8502 (Japan)

2013-12-23T23:59:59.000Z

354

Minority-Carrier Thermoelectric Devices Kevin P. Pipe and Rajeev J. Ram  

E-Print Network [OSTI]

results are given for several common material systems. Introduction Thermoelectric effects haveMinority-Carrier Thermoelectric Devices Kevin P. Pipe and Rajeev J. Ram Research Laboratory the thermoelectric performance of the electronic devices themselves. Recognizing that minority carriers play

355

SOLAR ENERGY A New York perspective,  

E-Print Network [OSTI]

ENERGY Solar energy is a broad term that labels the conversion of the radiant energy received from ­ electricity is a universal energy carrier, that can be used, transported, stored and converted to reachSOLAR ENERGY A New York perspective, Richard Perez & Thomas Thompson (Based upon a manuscript

Perez, Richard R.

356

Polymer solar cells  

Science Journals Connector (OSTI)

...become free carriers that can provide...extraction of carriers before recombination...and acceptor energy levels to extend...certified power conversion efficiency...efficiency carrier multiplication...implications for solar energy conversion. Phys. Rev...

2013-01-01T23:59:59.000Z

357

Effect of pressure on the behavior of copper-, iron-, and nickel-based oxygen carriers for chemical-looping combustion  

SciTech Connect (OSTI)

This work analyzes the main characteristics related to the chemical looping combustion (CLC) process necessary to use the syngas obtained in an integrated gasification combined cycle (IGCC) power plant. The kinetics of reduction with H{sub 2} and CO and oxidation with O{sub 2} of three high-reactivity oxygen carriers used in the CLC system have been determined in a thermogravimetric analyzer at atmospheric pressure. The iron- and nickel-based oxygen carriers were prepared by freeze-granulation, and the copper-based oxygen carrier was prepared by impregnation. The changing grain size model (CGSM) was used for the kinetic determination, assuming spherical grains for the freeze-granulated particles containing iron and nickel and a platelike geometry for the reacting surface of the copper-based impregnated particles. The dependence of the reaction rates on temperature was low, with the activation energy values varying from 14 to 33 kJ mol{sup -1} for the reduction and 7 to 15 kJ mol{sup -1} for the oxidation. The reaction order depended on the reacting gas and oxygen carrier, with values ranging from 0.25 to 1. However, an increase in the operating pressure for the IGCC + CLC system increases the thermal efficiency of the process, and the CO{sub 2} is recovered as a high pressure gas, decreasing the energy demand for further compression. The effect of pressure on the behavior of the oxygen carriers has been analyzed in a pressurized thermogravimetric analyzer at 1073 K and pressures up to 30 atm. It has been found that an increase in total pressure has a negative effect on the reaction rates of all the oxygen carriers. Moreover, the use of the CGSM with the kinetic parameters obtained at atmospheric pressure predicted higher reaction rates than those experimentally obtained at higher pressures, and therefore, the kinetic parameters necessary to design pressurized CLC plants must be determined at the operating pressure. 34 refs., 8 figs., 2 tabs.

Francisco Garcia-Labiano; Juan Adanez; Luis F. de Diego; Pilar Gayan; Alberto Abad [Instituto de Carboquimica (CSIC), Zaragoza (Spain). Department of Energy and Environment

2006-02-01T23:59:59.000Z

358

Analyzing carrier escape mechanisms in InAs/GaAs quantum dot p-i-n junction photovoltaic cells  

Science Journals Connector (OSTI)

Intermediate band solar cells (IBSCs) are third-generation photovoltaic (PV) devices that can harvest sub-bandgap photons normally not absorbed in a single-junction solar cell. Despite the large increase in total solar energy conversion efficiency predicted for IBSC devices substantial challenges remain to realizing these efficiency gains in practical devices. We evaluate carrier escape mechanisms in an InAs/GaAs quantum dot intermediate band p-i-n junction PV device using photocurrent measurements under sub-bandgap illumination. We show that sub-bandgap photons generate photocurrent through a two-photon absorption process but that carrier trapping and retrapping limit the overall photocurrent. The results identify a key obstacle that must be overcome in order to realize intermediate band devices that outperform single junction photovoltaic cells.

S. Polly; S. M. Hubbard; M. F. Doty

2014-01-01T23:59:59.000Z

359

Chemical-looping combustion of simulated synthesis gas using nickel oxide oxygen carrier supported on bentonite  

SciTech Connect (OSTI)

Chemical-looping combustion (CLC) is a combustion technology for clean and efficient utilization of fossil fuels for energy production. This process which produces sequestration ready CO2 systems is a promising technology to be utilized with coal gasification systems. In the present work, chemical-looping combustion has been studied with an oxygen carrier, NiO/bentonite (60 wt % NiO) for the gasification systems utilizing simulated synthesis gas. Global reaction rates of reduction and oxidation as a function of conversion were calculated for oxidation-reduction cycles utilizing the thermogravimetric analysis (TGA) data on multicycle tests conducted with NiO/bentonite at atmospheric pressure between 700 and 900 °C. The rate of reduction increased slightly with an increase in temperature, while the rate of oxidation decreased at 900 °C. The effect of particle size of the oxygen carrier on CLC was studied for the particle size between 20 and 200 mesh. The rates of reactions depended on the particle size of the oxygen carrier. The smaller the particle size, the higher the reaction rates. The multicycle CLC tests conducted in a high-pressure flow reactor showed stable reactivity for the production of CO2 from fuel gas at 800 and 900 °C and full consumption of hydrogen during the reaction. The data from a one cycle test on the effect of the pressure on the performance with NiO/bentonite utilizing the tapered element oscillating microbalance (TEOM) showed a positive effect of the pressure on the global rates of reduction-oxidation reactions at higher fractional conversions. The X-ray diffraction (XRD) analysis confirmed the presence of the NiO phase in NiO/bentonite with the oxidized sample in the highpressure reactor and Ni phase with the reduced sample. The presence of a small amount of NiO in the reduced sample detected by X-ray photoelectron spectroscopy (XPS) may be due to its exposure to air during sample transfer from the reactor to XPS. Scanning electron microscopy (SEM) analysis showed no significant changes in morphology of NiO/bentonite reacted in the temperature range 700-800 °C in an atmospheric TGA for 10 oxidation-reduction cycles, but some loss of surface area and porosity was observed at 900 °C. This effect was found to be greater with increase in the particle size of the oxygen carrier.

Siriwardane, R.V.; Chaudhari, K.; Poston, J.A.; Zinn, A.; Simonyi, T.; Robinson, C.

2007-05-01T23:59:59.000Z

360

Investigation of the basic physics of high efficiency semiconductor hot carrier solar cell. Annual status report, 31 May 1994-30 May 1995  

SciTech Connect (OSTI)

The main purpose of this research program is to investigate potential semiconductor materials and their multi-band-gap MQW (multiple quantum wells) structures for high efficiency solar cells for aerospace and commercial applications. The absorption and PL (photoluminescence) spectra, the carrier dynamics, and band structures have been investigated for semiconductors of InP, GaP, GaInP, and InGaAsP/InP MQW structures, and for semiconductors of GaAs and AlGaAs by previous measurements. The barrier potential design criteria for achieving maximum energy conversion efficiency, and the resonant tunneling time as a function of barrier width in high efficiency MQW solar cell structures have also been investigated in the first two years. Based on previous carrier dynamics measurements and the time-dependent short circuit current density calculations, an InAs/InGaAs - InGaAs/GaAs - GaAs/AlGaAs MQW solar cell structure with 15 bandgaps has been designed. The absorption and PL spectra in InGaAsP/InP bulk and MQW structures were measured at room temperature and 77 K with different pump wavelength and intensity, to search for resonant states that may affect the solar cell activities. Time-resolved IR absorption for InGaAsP/InP bulk and MQW structures has been measured by femtosecond visible-pump and IR-probe absorption spectroscopy. This, with the absorption and PL measurements, will be helpful to understand the basic physics and device performance in multi-bandgap InAs/InGaAs - InGaAs/InP - InP/InGaP MQW solar cells. In particular, the lifetime of the photoexcited hot electrons is an important parameter for the device operation of InGaAsP/InP MQW solar cells working in the resonant tunneling conditions. Lastly, time evolution of the hot electron relaxation in GaAs has been measured in the temperature range of 4 K through 288 K using femtosecond pump-IR-probe absorption technique.

Alfano, R.R.; Wang, W.B.; Mohaidat, J.M.; Cavicchia, M.A.; Raisky, O.Y.

1995-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" from the National Library of EnergyBeta (NLEBeta).
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361

Multiple density layered insulator  

DOE Patents [OSTI]

A multiple density layered insulator for use with a laser is disclosed wh provides at least two different insulation materials for a laser discharge tube, where the two insulation materials have different thermoconductivities. The multiple layer insulation materials provide for improved thermoconductivity capability for improved laser operation.

Alger, Terry W. (Tracy, CA)

1994-01-01T23:59:59.000Z

362

Chaotic carrier pulse position modulation communication system and method  

DOE Patents [OSTI]

A chaotic carrier pulse position modulation communication system and method is disclosed. The system includes a transmitter and receiver having matched chaotic pulse regenerators. The chaotic pulse regenerator in the receiver produces a synchronized replica of a chaotic pulse train generated by the regenerator in the transmitter. The pulse train from the transmitter can therefore act as a carrier signal. Data is encoded by the transmitter through selectively altering the interpulse timing between pulses in the chaotic pulse train. The altered pulse train is transmitted as a pulse signal. The receiver can detect whether a particular interpulse interval in the pulse signal has been altered by reference to the synchronized replica it generates, and can therefore detect the data transmitted by the receiver. Preferably, the receiver predicts the earliest moment in time it can expect a next pulse after observation of at least two consecutive pulses. It then decodes the pulse signal beginning at a short time before expected arrival of a pulse.

Abarbanel, Henry D. I. (Del Mar, CA); Larson, Lawrence E. (Del Mar, CA); Rulkov, Nikolai F. (San Diego, CA); Sushchik, Mikhail M. (San Diego, CA); Tsimring, Lev S. (San Diego, CA); Volkovskii, Alexander R. (San Diego, CA)

2001-01-01T23:59:59.000Z

363

Energy Saving Through Traffic Profiling and Prediction in Self-Optimizing Optical Networks  

Science Journals Connector (OSTI)

A method that automatically learns and predicts the traffic behavior to save energy by adjusting the number of active optical carriers is presented. Simulations prove it provides large...

Siracusa, Domenico; Pederzolli, Federico; Lo Cigno, Renato; Salvadori, Elio

364

Energy  

Gasoline and Diesel Fuel Update (EIA)

Federal, State, local, and foreign governments, EIA survey respondents, and the media. For further information, and for answers to questions on energy statistics, please...

365

Energy  

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

Energy Energy Energy Express Licensing Accelerator-Driven Transmutation Of Spent Fuel Elements Express Licensing Acid-catalyzed dehydrogenation of amine-boranes Express Licensing Air Breathing Direct Methanol Fuel Cell Express Licensing Aligned Crystalline Semiconducting Film On A Glass Substrate And Method Of Making Express Licensing Anion-Conducting Polymer, Composition, And Membrane Express Licensing Apparatus for Producing Voltage and Current Pulses Express Licensing Biaxially oriented film on flexible polymeric substrate Express Licensing Corrosion Test Cell For Bipolar Plates Express Licensing Device for hydrogen separation and method Negotiable Licensing Durable Fuel Cell Membrane Electrode Assembly (MEA) Express Licensing Energy Efficient Synthesis Of Boranes Express Licensing

366

Carrier?operated microphone preamplifier with self?testing capability  

Science Journals Connector (OSTI)

In carrier?operated preamplifiers a condensermicrophone can be placed in series with an inductor in one arm of a modified Van Zelst bridge circuit [M.D. Burkhard et al. J. Acoust. Soc. Am. 32 501–504 (1960)]. The microphonecapacitance and the inductor are resonant at the carrier frequency. Consequently the impedance of this arm is relatively low and the signal?to?noise ratio can exceed that of a conventional high?impedance preamplifier circuit by an order of magnitude or more. Sound?induced motion of the diaphragm modulates the carrier frequency; demodulation and amplification produce the output signal. Advances in microelectronic components since 1960 include the availability of temperature?stable integrated circuits small crystal?controlled oscillators and temperature?compensated voltage references. These components were used to construct a carder preamplifier of small size suitable for use with “half?inch” microphones. Since the bridge circuit balance is dependent upon the electrical impedance of the microphone changes in this impedance associated with changes in microphone sensitivity can be detected by use of an audio?frequency insert voltage. This insert technique provides a simple and convenient in situ check of the microphone and preamplifier. Tests for preamplifier battery supply and polarization voltage are also provided.

Edith L. R. Corliss; William B. Penzes

1979-01-01T23:59:59.000Z

367

Recirculation in multiple wave conversions  

SciTech Connect (OSTI)

A one-dimensional multiple wave-conversion model is constructed that allows energy recirculation in ray phase space. Using a modular eikonal approach, the connection coefficients for this model are calculated by ray phase-space methods. Analytical results (confirmed numerically) show that all connection coefficients exhibit interference effects that depend on an interference phase, calculated from the coupling constants and the area enclosed by the intersecting rays. This conceptual model, which focuses on the topology of intersecting rays in phase space, is used to investigate how mode conversion between primary and secondary waves is modified by the presence of a tertiary wave.

Kaufman, A. N.; Brizard, A.J.; Kaufman, A.N.; Tracy, E.R.

2008-07-30T23:59:59.000Z

368

Energy systems transformation  

Science Journals Connector (OSTI)

...Renewable-energy industries evidently suffer more...conventional-energy industries under recession conditions...generation of energy for industry and consumers has multiple...and water; nuclear waste; geopolitical conflicts...among others, coal gasification, cracking, and refining...

A. T. C. Jérôme Dangerman; Hans Joachim Schellnhuber

2013-01-01T23:59:59.000Z

369

Energy Research and Development Division FINAL PROJECT REPORT  

E-Print Network [OSTI]

Carrier and Mr. Randy Thompson of Unocal Corporation, completed the proprietary analyses and reports the California Energy Commission's Web site at. http://www.energy.ca.gov/geothermal/index.html The California

370

A high carrier injection terahertz quantum cascade laser based on indirectly pumped scheme  

SciTech Connect (OSTI)

A Terahertz quantum cascade laser with a rather high injection coupling strength based on an indirectly pumped scheme is designed and experimentally implemented. To effectively suppress leakage current, the chosen quantum cascade module of the device is based on a five-well GaAs/Al{sub 0.25}Ga{sub 0.75}As structure. The device lases up to 151?K with a lasing frequency of 2.67 THz. This study shows that the effect of higher energy states in carrier transport and the long-range tunnel coupling between states that belong to non-neighbouring modules have to be considered in quantum design of structures with a narrow injector barrier. Moreover, the effect of interface roughness scattering between the lasing states on threshold current is crucial.

Razavipour, S. G., E-mail: sgrazavi@uwaterloo.ca; Xu, C.; Wasilewski, Z. R.; Ban, D. [Department of Electrical and Computer Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave. W., Waterloo, Ontario N2L3G1 (Canada); Dupont, E.; Laframboise, S. R. [National Research Council, Blg. M-50, 1200 Montreal Rd., Ottawa, Ontario K1A0R6 (Canada); Chan, C. W. I.; Hu, Q. [Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2014-01-27T23:59:59.000Z

371

Hybrid phase shifted carrier modulation fed five-phase multilevel inverter for multiphase induction motor drive  

Science Journals Connector (OSTI)

This paper proposes an energy efficient modulation scheme suitable for multilevel inverter fed five-phase induction motor. Five-phase multilevel inverter provides good quality five-phase variable voltage and variable frequency supply to five-phase induction motor, which ensure reduced torque ripple and improved drive efficiency. This modulation inherits the features of fundamental frequency modulation and phase shifted carrier modulation in power conversion and resolves the contradiction between high frequency and accuracy in a digital control scheme. Base modulator and hybrid formulation control algorithms are realised with TMS320F2407 DSP processor and Xilinx XC95108 CPLD controllers. The performance studies with induction motor are evaluated in terms of power loss, weighted total harmonic distortion and torque ripple. Selected simulation and experiment results are reported to verify and validate the effectiveness of the proposed technique.

C. Govindaraju

2013-01-01T23:59:59.000Z

372

Snapshots of the retarded interaction of charge carriers with ultrafast fluctuations in cuprates  

E-Print Network [OSTI]

One of the pivotal questions in the physics of high-temperature superconductors is whether the low-energy dynamics of the charge carriers is mediated by bosons with a characteristic timescale. This issue has remained elusive since electronic correlations are expected to dramatically speed up the electron-boson scattering processes, confining them to the very femtosecond timescale that is hard to access even with state-of-the-art ultrafast techniques. Here we simultaneously push the time resolution and the frequency range of transient reflectivity measurements up to an unprecedented level that enables us to directly observe the 16 fs build-up of the effective electron-boson interaction in hole-doped copper oxides. This extremely fast timescale is in agreement with numerical calculations based on the t-J model and the repulsive Hubbard model, in which the relaxation of the photo-excited charges is achieved via inelastic scattering with short-range antiferromagnetic excitations.

Conte, S Dal; Golež, D; Mierzejewski, M; Soavi, G; Peli, S; Banfi, F; Ferrini, G; Comin, R; Ludbrook, B M; Chauviere, L; Zhigadlo, N D; Eisaki, H; Greven, M; Lupi, S; Damascelli, A; Brida, D; Capone, M; Bon?a, J; Cerullo, G; Giannetti, C

2015-01-01T23:59:59.000Z

373

Aberration-corrected scanning transmission electron microscopy: from atomic imaging and analysis to solving energy problems  

Science Journals Connector (OSTI)

...fuels, but the conversion efficiency of...into electrical energy is limited by...functionality in energy conversion devices such as...insights into the carrier dynamics in the...ability to study energy conversion processes in materials...

2009-01-01T23:59:59.000Z

374

A method to calculate the cumulative energy demand (CED) of lignite extraction  

Science Journals Connector (OSTI)

For the utilisation of an energy carrier such as lignite, the whole life cycle including necessary energy supply processes have to be considered. Therefore using the ‘Cumulative Energy Demand’ (CED) is especially...

Michael Röhrlich; Mark Mistry…

2000-11-01T23:59:59.000Z

375

Pyrochemical multiplicity counter development  

SciTech Connect (OSTI)

Impure plutonium-bearing materials from pyrochemical processes often display both significant self-multiplication and variable ({alpha},n) reaction rates. Standard neutron coincidence counting techniques usually fail to accurately measure these materials. Neutron multiplicity counters measure the third moment of the neutron multiplicity distribution and thus make it possible to deduce the fertile plutonium mass of a sample even when both the self-multiplication and the ({alpha},n) reaction rate are unknown. A multiplicity counter suitable for measuring pyrochemical materials has been designed and built. This paper describes the results of characterization studies for the new counter. The counter consists of 126 helium-3 tubes arranged in 4 concentric rings in a polyethylene moderator; the average spacing between the tubes is 1.59 cm. The end plugs for the counter are made of graphite, and the 24.1- by 37.5-cm sample cavity is cadmium lined. The counter consists of two distinct halves from which the neutron counts are summed. The counter is capable of operation in either a freestanding mode with the two halves coupled together by an external cabinet or in a glove-box mode with the two halves placed around a glovebox well and then mated. For a {sup 252}Cf source centered in the sample cavity, the measured efficiency of the new multiplicity counter is 57.7% and its die-away time is 47.2{mu}s. 8 refs., 9 figs.

Langner, D.G.; Dytlewski, N.; Krick, M.S.

1991-01-01T23:59:59.000Z

376

A Survey of Multiplicity Fluctuations in PHENIX  

E-Print Network [OSTI]

The PHENIX Experiment at the Relativistic Heavy Ion Collider has made measurements of event-by-event fluctuations in the charged particle multiplicity as a function of collision energy, centrality, collision species, and transverse momentum in heavy ion collisions. The results of these measurements will be reviewed and discussed.

Jeffery T. Mitchell

2005-10-27T23:59:59.000Z

377

Computer Simulations Reveal Multiple Functions for Aromatic  

E-Print Network [OSTI]

Computer Simulations Reveal Multiple Functions for Aromatic Residues in Cellulase Enzymes NREL researchers use high-performance computing to demonstrate fundamental roles of aromatic residues in cellulase enzyme tunnels. National Renewable Energy Laboratory (NREL) computer simulations of a key indus- trial

378

Jet multiplicities as the QGP thermometer  

E-Print Network [OSTI]

It is proposed to use the energy behavior of mean multiplicities of jets propagating in a nuclear medium as the thermometer of this medium during the collision phases. The qualitative effects are demonstrated in the framework of the fixed coupling QCD with account of jet quenching.

I. M. Dremin; O. S. Shadrin

2006-02-10T23:59:59.000Z

379

Bimetallic Fe–Ni Oxygen Carriers for Chemical Looping Combustion  

Science Journals Connector (OSTI)

(2-4) In CLC (schematic in Figure 1), a fuel is combusted in a fuel reactor (“reducer”) in contact with an oxygen carrier (typically a metal oxide). ... After combustion of the fuel, the reduced metal is then transferred to the air reactor (“oxidizer”) where it is reoxidized by air, and then circulated back to the reducer to close the material “loop”. ... Son, S. R.; Kim, S. D.Chemical-looping combustion with NiO and Fe2O3 in a thermobalance and circulating fluidized bed reactor with double loops Ind. Eng. ...

Saurabh Bhavsar; Götz Veser

2013-05-20T23:59:59.000Z

380

Dynamic load measurement on an LPG carrier during voyage  

SciTech Connect (OSTI)

There are few actual ship measurement data showing the propriety of the design loads given by classification societies rules or other relevant rules. Therefore, the authors measured acceleration of ship motion and fluctuating loads on tank supports and chocks of a 75,000 m{sup 3} LPG carrier during her voyage. This paper introduces the subject ship and typical measurement results over about 1.3 years. From the analysis of these data, the authors have made clear the amount of frequency of fluctuating loads during actual navigation and ascertained the propriety of the ship`s design base.

Kamoi, Noriyuki; Taniguchi, Tomokazu; Kiso, Takashi; Kada, Kazuo; Motoi, Tatsuya; Nakamura, Shinichi [Kawasaki Heavy Industries, Ltd., Kobe (Japan)

1994-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Carrier doping into boron nanobelts by neutron transmutation  

SciTech Connect (OSTI)

We report the effects of a neutron-capture reaction of isotope {sup 10}B on the structure and electrical transport of {sup 10}B-enriched single-crystalline boron nanobelts. Partial amorphization, particularly at the surface of the nanobelt, was observed after thermal neutron irradiation with a dose of 2x10{sup 19} cm{sup -2}. Carrier doping into the nanobelts by neutron transmutation is expected after postannealing. The change in conductance is discussed based on the distribution of localized states in the band gap of {alpha}-tetragonal boron.

Kirihara, Kazuhiro; Shimizu, Yoshiki; Sasaki, Takeshi; Koshizaki, Naoto [Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565 (Japan); Yamada, Yoichi [Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan); Esaka, Fumitaka [Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195 (Japan); Yamamoto, Hiroyuki; Shamoto, Shin-ichi [Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195 (Japan); Kimura, Kaoru [Department of Advanced Materials Science, The University of Tokyo, Kashiwa, Chiba 277-8561 (Japan)

2010-11-22T23:59:59.000Z

382

Multiple charm production at the LHC energy  

SciTech Connect (OSTI)

Cross sections for J/{psi} mesons produced in association with open charm and two charmed hadrons from different cc-bar pairs under LHC conditions are predicted theoretically. The respective processes are considered both in single and in double parton interactions. Particular attention is given to kinematical limits of the LHCb detector, and a comparison with the most recent experimental data is performed for them.

Berezhnoy, A. V., E-mail: Alexander.Berezhnoy@cern.ch [Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation); Likhoded, A. K., E-mail: Anatolii.Likhoded@ihep.ru; Luchinsky, A. V., E-mail: Alexey.Luchinsky@ihep.ru; Novoselov, A. A., E-mail: Alexey.Novoselov@cern.ch [Institute for High Energy Physics (Russian Federation)

2013-01-15T23:59:59.000Z

383

The Global Energy Challenge  

ScienceCinema (OSTI)

The expected doubling of global energy demand by 2050 challenges our traditional patterns of energy production, distribution and use.   The continued use of fossil fuels raises concerns about supply, security, environment and climate.  New routes are needed for the efficient conversion of energy from chemical fuel, sunlight, and heat to electricity or hydrogen as an energy carrier and finally to end uses like transportation, lighting, and heating. Opportunities for efficient new energy conversion routes based on nanoscale materials will be presented, with emphasis on the sustainable energy technologies they enable.

George Crabtree

2010-01-08T23:59:59.000Z

384

The Global Energy Challenge  

SciTech Connect (OSTI)

The expected doubling of global energy demand by 2050 challenges our traditional patterns of energy production, distribution and use.   The continued use of fossil fuels raises concerns about supply, security, environment and climate.  New routes are needed for the efficient conversion of energy from chemical fuel, sunlight, and heat to electricity or hydrogen as an energy carrier and finally to end uses like transportation, lighting, and heating. Opportunities for efficient new energy conversion routes based on nanoscale materials will be presented, with emphasis on the sustainable energy technologies they enable.

George Crabtree

2007-09-12T23:59:59.000Z

385

Energy  

Office of Legacy Management (LM)

..) ".. ..) ".. _,; ,' . ' , ,; Depar?.me.nt ,of.' Energy Washington; DC 20585 : . ' , - $$ o"\ ' ~' ,' DEC ?;$ ;y4,,, ~ ' .~ The Honorable John Kalwitz , 200 E. Wells Street Milwaukee, W~isconsin 53202, . . i :. Dear,Mayor 'Kalwitz: " . " Secretary of Energy Hazel' O'Leary has announceha new,approach 'to,openness in " the Department of Ene~rgy (DOE) and its communications with'the public. In -. support of~this initiative, we areipleased to forward the enclosed information related to the Milwaukee Ai.rport site in your jurisdiction that performed work, for DOE orits predecessor agencies. information; use, and retention. ., This information .is provided for your '/ ,' DOE's Formerly Utilized Sites Remedial:'Action~'Prog&is responsible for ,"'

386

Energy Hub Based on Nuclear Energy and Hydrogen Energy Storage  

Science Journals Connector (OSTI)

An ‘energy hub’ comprises of the interactions of different energy loads and sources for power generation, storage, and conversion. ... In addition, where there are technical limitations in electricity distribution such as transmission congestion, the use of hydrogen as an energy carrier to increase the efficiency and reliability of the electric grid becomes an attractive option. ... It will be able to facilitate the intermittency of renewable resources such as solar, and wind, and be able to store energy in the form of hydrogen and convert hydrogen back to electricity when demand returns. ...

Yaser Maniyali; Ali Almansoori; Michael Fowler; Ali Elkamel

2013-05-13T23:59:59.000Z

387

Organic light emitting device having multiple separate emissive layers  

DOE Patents [OSTI]

An organic light emitting device having multiple separate emissive layers is provided. Each emissive layer may define an exciton formation region, allowing exciton formation to occur across the entire emissive region. By aligning the energy levels of each emissive layer with the adjacent emissive layers, exciton formation in each layer may be improved. Devices incorporating multiple emissive layers with multiple exciton formation regions may exhibit improved performance, including internal quantum efficiencies of up to 100%.

Forrest, Stephen R. (Ann Arbor, MI)

2012-03-27T23:59:59.000Z

388

Production Scheduling with Energy Efficiency Constraints  

E-Print Network [OSTI]

This research is motivated by a real world production scheduling problem in a continuous manufacturing system involving multiple objectives, multiple products and multiple processing lines with various inventory, production and energy efficiency...

Lee, J.; Kozman, T. A.; Wang, X.

2007-01-01T23:59:59.000Z

389

Carriers of Electricity in Metals Exhibiting Positive Hall Effects  

Science Journals Connector (OSTI)

The momentum associated with the electric current in metals has been measured for the first time under conditions in which they are known to have positive Hall coefficients. Such metals are of particular interest because their positive (anomalous) coefficients suggest the possibility of positive electric carriers. A coil of the wire under investigation was supported with its axis vertical as a torsional pendulum. The extremely small deflections resulting from the inertial effect of successive reversals of current were measured by a resonance method. A phototube and oscilloscope method for measuring both the amplitude and the phase of the small deflections is described.In more than 100 determinations on Mo and Zn the sign of the charge-to-mass ratio was always found to be negative. For both Mo and Zn the mean value of em was found to be within 3 percent of the value for free electrons in slow motion. One set of determinations for Mo was made at liquid air temperatures. The direct mechanical method used to measure em is independent of any particular theory of metallic conduction. The results thus discriminate against theories for which current and momentum can have the same direction. In particular, the results rule out the possibility that positive Hall effects may be explained by positive carriers.

Sheldon Brown and S. J. Barnett

1952-08-15T23:59:59.000Z

390

Carrier-Controlled Ferromagnetism in SrTiO3  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

Magnetotransport and superconducting properties are investigated for uniformly La-doped SrTiO3 films and GdTiO3/SrTiO3 heterostructures, respectively. GdTiO3/SrTiO3 interfaces exhibit a high-density 2D electron gas on the SrTiO3 side of the interface, while, for the SrTiO3 films, carriers are provided by the dopant atoms. Both types of samples exhibit ferromagnetism at low temperatures, as evidenced by a hysteresis in the magnetoresistance. For the uniformly doped SrTiO3 films, the Curie temperature is found to increase with doping and to coexist with superconductivity for carrier concentrations on the high-density side of the superconducting dome. The Curie temperature of the GdTiO3/SrTiO3 heterostructures scales with the thickness of the SrTiO3 quantum well. The results are used to construct a stability diagram for the ferromagnetic and superconducting phases of SrTiO3.

Moetakef, Pouya; Williams, James R.; Ouellette, Daniel G.; Kajdos, Adam P.; Goldhaber-Gordon, David; Allen, S. James; Stemmer, Susanne

2012-06-01T23:59:59.000Z

391

Natural Ores as Oxygen Carriers in Chemical Looping Combustion  

SciTech Connect (OSTI)

Chemical looping combustion (CLC) is a combustion technology that utilizes oxygen from oxygen carriers (OC), such as metal oxides, instead of air to combust fuels. The use of natural minerals as oxygen carriers has advantages, such as lower cost and availability. Eight materials, based on copper or iron oxides, were selected for screening tests of CLC processes using coal and methane as fuels. Thermogravimetric experiments and bench-scale fixed-bed reactor tests were conducted to investigate the oxygen transfer capacity, reaction kinetics, and stability during cyclic reduction/oxidation reaction. Most natural minerals showed lower combustion capacity than pure CuO/Fe{sub 2}O{sub 3} due to low-concentrations of active oxide species in minerals. In coal CLC, chryscolla (Cu-based), magnetite, and limonite (Fe-based) demonstrated better reaction performances than other materials. The addition of steam improved the coal CLC performance when using natural ores because of the steam gasification of coal and the subsequent reaction of gaseous fuels with active oxide species in the natural ores. In methane CLC, chryscolla, hematite, and limonite demonstrated excellent reactivity and stability in 50-cycle thermogravimetric analysis tests. Fe{sub 2}O{sub 3}-based ores possess greater oxygen utilization but require an activation period before achieving full performance in methane CLC. Particle agglomeration issues associated with the application of natural ores in CLC processes were also studied by scanning electron microscopy (SEM).

Tian, Hanjing; Siriwardane, Ranjani; Simonyi, Thomas; Poston, James

2013-08-01T23:59:59.000Z

392

V-094: IBM Multiple Products Multiple Vulnerabilities | Department of  

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

94: IBM Multiple Products Multiple Vulnerabilities 94: IBM Multiple Products Multiple Vulnerabilities V-094: IBM Multiple Products Multiple Vulnerabilities February 19, 2013 - 1:41am Addthis PROBLEM: IBM Multiple Products Multiple Vulnerabilities PLATFORM: IBM Maximo Asset Management versions 7.5, 7.1, and 6.2 IBM Maximo Asset Management Essentials versions 7.5, 7.1, and 6.2 IBM SmartCloud Control Desk version 7.5 IBM Tivoli Asset Management for IT versions 7.2, 7.1, and 6.2 IBM Tivoli Change and Configuration Management Database versions 7.2 and 7.1 IBM Tivoli Service Request Manager versions 7.2, 7.1, and 6.2 ABSTRACT: A weakness and multiple vulnerabilities have been reported in multiple IBM products. REFERENCE LINKS: IBM Reference #:1625624 IBM Product Security Incident Response Blog Secunia Advisory SA52132

393

Approaches to Future Generation Photovoltaics and Solar Fuels: Multiple Exciton Generation in Quantum Dots, Quantum Dot Arrays, Molecular Singlet Fission, and Quantum Dot Solar Cells  

SciTech Connect (OSTI)

One potential, long-term approach to more efficient future generation solar cells is to utilize the unique properties of quantum dots (QDs) and unique molecular chromophores to control the relaxation pathways of excited states to produce enhanced conversion efficiency through efficient multiple electron-hole pair generation from single photons . We have observed efficient multiple exciton generation (MEG) in PbSe, PbS, PbTe, and Si QDs and efficient singlet fission (SF) in molecules that satisfy specific requirements for their excited state energy level structure to achieve carrier multiplication. We have studied MEG in close-packed QD arrays where the QDs are electronically coupled in the films and thus exhibit good transport while still maintaining quantization and MEG. We have developed simple, all-inorganic QD solar cells that produce large short-circuit photocurrents and power conversion efficiencies in the 3-5% range via both nanocrystalline Schottky junctions and nanocrystalline p-n junctions. These solar cells also show QYs for photocurrent that exceed 100% in the photon energy regions where MEG is possible; the photocurrent MEG QYs as a function of photon energy match those determined via time-resolved spectroscopy. We have also observed very efficient SF in thin films of molecular crystals of 1,3 diphenylisobenzofuran with quantum yields of 200% at the optimum SF threshold of 2Eg (HOMO-LUMO for S{sub 0}-S{sub 1}), reflecting the creation of two excited triplet states from the first excited singlet state. Various possible configurations for novel solar cells based on MEG in QDs and SF in molecules that could produce high conversion efficiencies will be presented, along with progress in developing such new types of solar cells. Recent analyses of the effect of MEG or SF combined with solar concentration on the conversion efficiency of solar cells will be discussed.

Nozik, A. J.; Beard, M. C.; Johnson, J. C.; Hanna, M. C.; Luther, J. M.; Midgett, A.; Semonin, O.; Michel, J.

2012-01-01T23:59:59.000Z

394

Femtosecond carrier dynamics in Ge measured by a luminescence up-conversion technique and near-band-edge infrared excitation  

Science Journals Connector (OSTI)

The luminescence at the direct band edge of bulk intrinsic and p-type Ge (p?2×1019 cm-3) samples was measured in a two-wavelength up-conversion experiment with ?=1.25–1.35 ?m excitation and at lattice temperatures 20 and 300 K. The near-band-edge carrier dynamics, measured with 100-fs temporal resolution and at carrier densities of 5×1016–2×1018 cm-3, are dominated by electron-phonon intervalley scattering and electron thermalization. Thermalization governs the initial rise of the luminescence in the first 500 fs and is studied as a function of energy and electron density. With excitation photon energy 100 meV greater than the direct band gap, the thermalization time of electrons was measured to decrease with increasing density as n-0.55±0.1. Degeneracy has a strong influence on the thermalization rate with 50 meV excess energy. The L-electron cooling through the electron-hole interaction, as well as hole screening and degeneracy in p-type Ge, is discussed.

G. Mak and W. W. Rühle

1995-10-15T23:59:59.000Z

395

Photon-energy-dependent light effects in organic nano-floating-gate nonvolatile memories  

Science Journals Connector (OSTI)

Abstract A pentacene-based organic field-effect transistor nonvolatile memory, in which polystyrene covered Au nanoparticles act as the nano-floating-gate, is probed under different illumination conditions. The memory window can be greatly enlarged upon illumination depending on incident photon energy and intensity, and two light effects are proposed and discussed. The minority multiplication effect enhances the minority carrier tunneling into the nano-floating-gate, resulting in the remarkable positive VT shift. The excitation-induced injection effect is strongly photon energy dependent, and it is responsible for the significant negative VT shift. Appropriate illumination is favorable for reducing the programming/erasing voltage of organic nano-floating-gate nonvolatile memories.

Xu Gao; Chang-Hai Liu; Xiao-Jian She; Qin-Liang Li; Jie Liu; Sui-Dong Wang

2014-01-01T23:59:59.000Z

396

Ultrafast Control of Magnetism in Ferromagnetic Semiconductors via Photoexcited Transient Carriers  

SciTech Connect (OSTI)

The field of spintronics offers perspectives for seamless integration of coupled and inter-tunable electrical and magnetic properties in a single device. For integration of the spin degree of freedom with current electronic technology, new semiconductors are needed that show electrically-tunable magnetic properties at room temperature and above. Dilute magnetic semiconductors derived from III-V compounds, like GaMnAs and InMnAs, show coupled and tunable magnetic, transport, and optical properties, due to the fact that their ferromagnetism is hole-mediated. These unconventional materials are ideal systems for manipulating the magnetic order by changing the carrier polarization, population density, and energy band distribution of the complementary subsystem of holes. This is the main theme we cover in this thesis. In particular, we develop a unique setup by use of ultraviolet pump, near-infrared probe femtosecond laser pulses, that allows for magneto-optical Kerr effect (MOKE) spectroscopy experiments. We photo-excite transient carriers in our samples, and measure the induced transient magnetization dynamics. One set of experiments performed allowed us to observe for the first time enhancement of the ferromagnetic order in GaMnAs, on an ultrafast time scale of hundreds of picoseconds. The corresponding transient increase of Curie temperature (Tc, the temperature above which a ferromagnetic material loses its permanent magnetism) of about 1 K for our experimental conditions is a very promising result for potential spintronics applications, especially since it is seconded by observation of an ultrafast ferromagnetic to paramagnetic phase transition above Tc. In a different set of experiments, we"write" the magnetization in a particular orientation in the sample plane. Using an ultrafast scheme, we alter the distribution of holes in the system and detect signatures of the particular memory state in the subsequent magnetization dynamics, with unprecedented hundreds of femtosecond detection speed. The femtosecond cooperative magnetic phenomena presented here further our understanding of Mn-hole correlations in III-V dilute magnetic semiconductors, and may well represent universal principles of a large class of carrier-mediated ferromagnetic materials. Thus they offer perspectives for future terahertz (1012 Hz) speed"spintronic" functional devices.

Cotoros, Ingrid A.

2008-12-12T23:59:59.000Z

397

Pressurized chemical-looping combustion of coal with an iron ore-based oxygen carrier  

SciTech Connect (OSTI)

Chemical-looping combustion (CLC) is a new combustion technology with inherent separation of CO{sub 2}. Most of the previous investigations on CLC of solid fuels were conducted under atmospheric pressure. A pressurized CLC combined cycle (PCLC-CC) system is proposed as a promising coal combustion technology with potential higher system efficiency, higher fuel conversion, and lower cost for CO{sub 2} sequestration. In this study pressurized CLC of coal with Companhia Valedo Rio Doce (CVRD) iron ore was investigated in a laboratory fixed bed reactor. CVRD iron ore particles were exposed alternately to reduction by 0.4 g of Chinese Xuzhou bituminous coal gasified with 87.2% steam/N{sub 2} mixture and oxidation with 5% O{sub 2} in N{sub 2} at 970 C. The operating pressure was varied between 0.1 MPa and 0.6 MPa. First, control experiments of steam coal gasification over quartz sand were performed. H{sub 2} and CO{sub 2} are the major components of the gasification products, and the operating pressure influences the gas composition. Higher concentrations of CO{sub 2} and lower fractions of CO, CH{sub 4}, and H{sub 2} during the reduction process with CVRD iron ore was achieved under higher pressures. The effects of pressure on the coal gasification rate in the presence of the oxygen carrier were different for pyrolysis and char gasification. The pressurized condition suppresses the initial coal pyrolysis process while it also enhances coal char gasification and reduction with iron ore in steam, and thus improves the overall reaction rate of CLC. The oxidation rates and variation of oxygen carrier conversion are higher at elevated pressures reflecting higher reduction level in the previous reduction period. Scanning electron microscope and energy-dispersive X-ray spectroscopy (SEM-EDX) analyses show that particles become porous after experiments but maintain structure and size after several cycles. Agglomeration was not observed in this study. An EDX analysis demonstrates that there is very little coal ash deposited on the oxygen carrier particles but no appreciable crystalline phases change as verified by X-ray diffraction (XRD) analysis. Overall, the limited pressurized CLC experiments carried out in the present work suggest that PCLC of coal is promising and further investigations are necessary. (author)

Xiao, Rui; Song, Min; Zhang, Shuai; Shen, Laihong [School of Energy and Environment, Southeast University, Sipailou No. 2, Nanjing 210096 (China); Song, Qilei [School of Energy and Environment, Southeast University, Sipailou No. 2, Nanjing 210096 (China); Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA (United Kingdom); Lu, Zuoji [School of Energy and Environment, Southeast University, Sipailou No. 2, Nanjing 210096 (China); GCL Engineering Limited, Zhujiang No. 1, Nanjing 210008 (China)

2010-06-15T23:59:59.000Z

398

Multiple Rankine topping cycles  

SciTech Connect (OSTI)

The efficiency of a Rankine cycle is primarily determined by the temperatures of heat addition and rejection. However, no working fluid has been identified which will operate in a Rankine cycle over an extremely wide temperature range. Multiple Rankine topping cycles offer a technique for achieving high thermal efficiencies in power plants by allowing the use of several working fluids. This paper gives a history of Rankine topping cycles, presents an analysis for the calculation of the overall efficiency of a three-module multiple Rankine cycle, and presents results from a case study for a sodium-mercury-water cycle.

McWhirter, J.D. [Argonne National Lab., Idaho Falls, ID (United States). Engineering Div.]|[Idaho State Univ., Pocatello, ID (United States). Coll. of Engineering

1995-07-01T23:59:59.000Z

399

Interaction of mineral matter of coal with oxygen carriers in chemical-looping combustion (CLC)  

Science Journals Connector (OSTI)

Abstract The chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) processes are novel solutions for efficient combustion with direct separation of carbon dioxide. These processes use a metal oxide as an oxygen carrier to transfer oxygen from an air to a fuel reactor, where the fuel reacts with the solid oxygen carrier. When utilizing coal in CLC, the oxygen carrier particles could be affected through interaction with the ash-forming mineral matter found in coal, causing deactivation and/or agglomeration. In this work, possible interactions between minerals commonly encountered in coal and several promising oxygen carriers that are currently under investigation for their use in CLC are studied by both experiment and thermodynamic equilibrium calculations. Possible interaction was studied for both highly reducing and oxidizing conditions at 900 °C. Under highly reducing conditions pyrite was found to have by far the most deteriorating effect on the oxygen carrier particles, as the sulfur in the pyrite reacted with the oxygen carrier to form sulfides. Quartz and clay minerals were found to have a rather low influence on the oxygen carriers. Out of the oxygen carriers investigated, CuO/MgAl2O4 and the Mn3O4/ZrO2 oxygen carriers tended to be quite reactive towards mineral matter whereas ilmenite has been shown to be the most robust oxygen carrier. Although sulfur can clearly deactivate Ni, Cu and Mn based oxygen carriers under sub-stoichiometric conditions, when the fuel is converted fully to CO2 and H2O, sulfides are only expected for Ni-based oxygen carriers.

Martin Keller; Mehdi Arjmand; Henrik Leion; Tobias Mattisson

2014-01-01T23:59:59.000Z

400

Production of carrier-peptide conjugates using chemically reactive unnatural amino acids  

DOE Patents [OSTI]

Provided are methods of making carrier polypeptide that include incorporating a first unnatural amino acid into a carrier polypeptide variant, incorporating a second unnatural amino acid into a target polypeptide variant, and reacting the first and second unnatural amino acids to produce the conjugate. Conjugates produced using the provided methods are also provided. In addition, orthogonal translation systems in methylotrophic yeast and methods of using these systems to produce carrier and target polypeptide variants comprising unnatural amino acids are provided.

Young, Travis; Schultz, Peter G

2014-01-28T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Conference for Biomass and Energy, Copenhagen, 1996 published by Elsevier BIOMASS ENERGY PRODUCTION: THE GLOBAL POTENTIAL  

E-Print Network [OSTI]

9th Conference for Biomass and Energy, Copenhagen, 1996 ­ published by Elsevier 1 BIOMASS ENERGY disturbance of the natural global carbon cycle. The "carbon-neutral" renewable energy carrier biomass seems of biomass for energy purposes. The CEBM comprises a biospheric part being based on the "Osnabrück Biosphere

Keeling, Stephen L.

402

John Papanikolas: Visualizing Charge Carrier Motion in Nanowires...  

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

in use of ultrafast laser spectroscopies to study the fundamental energy and electron transfer processes that underpin solar energy conversion. Click here for directions. *video...

403

Multiple protocol fluorometer and method  

DOE Patents [OSTI]

A multiple protocol fluorometer measures photosynthetic parameters of phytoplankton and higher plants using actively stimulated fluorescence protocols. The measured parameters include spectrally-resolved functional and optical absorption cross sections of PSII, extent of energy transfer between reaction centers of PSII, F.sub.0 (minimal), F.sub.m (maximal) and F.sub.v (variable) components of PSII fluorescence, photochemical and non-photochemical quenching, size of the plastoquinone (PQ) pool, and the kinetics of electron transport between Q.sub.a and PQ pool and between PQ pool and PSI. The multiple protocol fluorometer, in one embodiment, is equipped with an excitation source having a controlled spectral output range between 420 nm and 555 nm and capable of generating flashlets having a duration of 0.125-32 .mu.s, an interval between 0.5 .mu.s and 2 seconds, and peak optical power of up to 2 W/cm.sup.2. The excitation source is also capable of generating, simultaneous with the flashlets, a controlled continuous, background illumination.

Kolber, Zbigniew S. (Shoreham, NY); Falkowski, Paul G. (Stony Brook, NY)

2000-09-19T23:59:59.000Z

404

E-Print Network 3.0 - aircraft carriers proposed Sample Search...  

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

Date: April 8, 2008 POC: Dave Lopez, MA-30 Summary: Designated Cat 1 Carrier 159 Bonneville Power Administration Aircraft Services United States DOE... Member Airline 288...

405

Reducible Supports for Ni-based Oxygen Carriers in Chemical Looping Combustion  

Science Journals Connector (OSTI)

Reducible Supports for Ni-based Oxygen Carriers in Chemical Looping Combustion ... Industrial & Engineering Chemistry Research2014 53 (42), 16341-16348 ...

Saurabh Bhavsar; Götz Veser

2013-03-29T23:59:59.000Z

406

Investigation of Chemical Looping Combustion of Coal with CuFe2O4 Oxygen Carrier  

Science Journals Connector (OSTI)

Investigation of Chemical Looping Combustion of Coal with CuFe2O4 Oxygen Carrier ... Industrial & Engineering Chemistry Research2013 52 (5), 1795-1805 ...

Baowen Wang; Rong Yan; Haibo Zhao; Ying Zheng; Zhaohui Liu; Chuguang Zheng

2011-06-15T23:59:59.000Z

407

E-Print Network 3.0 - ambipolar charge carrier Sample Search...  

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

Summary: carrier parameter values, which are constants. The ambipolar transport equation therefore reduces... carrierambipolar transport equation can be written in terms of...

408

A thermochemical study of ceria: exploiting an old material for new modes of energy conversion and CO2 mitigation  

Science Journals Connector (OSTI)

...partial molar free energy of lattice oxygen...solar-to-fuel conversion efficiency, which...the mobilities on carrier concentrations...J. Hydrogen Energy 31 5561( doi...for new modes of energy conversion and CO2 mitigation...

2010-01-01T23:59:59.000Z

409

Multiple gap photovoltaic device  

DOE Patents [OSTI]

A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an amorphous semiconductor as the first cell and a crystalline semiconductor as the second cell.

Dalal, Vikram L. (Newark, DE)

1981-01-01T23:59:59.000Z

410

Power line carrier interference from HVDC converter terminals  

SciTech Connect (OSTI)

Power line carrier (PLC) equipment typically operates in the frequency range from 25 kHz to 300 kHz. Interference studies for HVDC converters usually concentrate on interference from noise sources within this frequency range. However, operating experience at the Sandy Pond converter terminal has indicated that PLC equipment is also susceptible to interference from sources of power system harmonics below the PLC frequency range. Extensive field testing and analytical studies have shown that each PLC circuit has a resonant frequency below the operating frequency. If excited at this resonant frequency, high voltages may exist within the PLC circuit. The resulting saturation of PLC components leads to local generation of radio frequency (RF) noise that interferes with proper operation of PLC circuits. Sources of power system harmonics in the 3-10 kHz range, such as line commutated dc converters, are potential sources of this type of interference.

Tatro, P.J.; Adamson, K.A. (New England Power Service Co., Westborough, MA (United States)); Eitzmann, M.A.; Smead, M. (GE Industrial and Power Systems, Schenectady, NY (United States). Power Systems Engineering Dept.)

1993-07-01T23:59:59.000Z

411

Alternate cleaning methods for LCCAs. [LCC (Leadless Chip Carriers)  

SciTech Connect (OSTI)

The purpose of this project was to evaluate DI water followed by isopropyl alcohol (IPA) cleaning and no cleaning of leadless chip carriers (LCCs). Both environmentally safe methods were to be tested against the current chlorofluorocarbon (CFC) material cleaning baseline. Several experiments were run to compare production and electrical yields of LCCs cleaned by all three methods. The critical process steps most affected by cleaning were wire bonding, sealing, particle induced noise detection (PIND), moisture content, and electrical. Yields for the experimental lots cleaned by CFC, DI water plus IPA, and no cleaning were 56%, 72%, and 75%, respectively. The overall results indicated that vapor degreasing/ultrasonic cleaning in CFCs could be replaced by the aqueous method. No cleaning could also be considered if an effective dry method of particle removal could be developed.

Adams, B.E.

1993-04-01T23:59:59.000Z

412

Energy Manufacturing Matthew Realff and Steven Danyluk  

E-Print Network [OSTI]

century. Large centralized chemical plants for processing and inter-conversion of energy take advantage paradigm from centralized to distributed energy processing. It focuses on two conversion routes that were photosynthesis whereby carbon can be utilized as an energy carrier without contributing to greenhouse gases

Das, Suman

413

Defect Tolerant Semiconductors for Solar Energy Conversion  

Science Journals Connector (OSTI)

Defect Tolerant Semiconductors for Solar Energy Conversion ... He obtained his Ph.D. in Physics at Paris-Sud University where he modeled Hot Carrier Solar Cells by means of Ensemble Monte Carlo methods. ... These surface energies are significantly lower compared to 96 and 102 meV/Å2 for (1010) and (1120) low energy nonpolar GaN surfaces respectively. ...

Andriy Zakutayev; Christopher M. Caskey; Angela N. Fioretti; David S. Ginley; Julien Vidal; Vladan Stevanovic; Eric Tea; Stephan Lany

2014-03-13T23:59:59.000Z

414

Computational fluid dynamics modeling of chemical looping combustion process with calcium sulphate oxygen carrier - article no. A19  

SciTech Connect (OSTI)

To concentrate CO{sub 2} in combustion processes by efficient and energy-saving ways is a first and very important step for its sequestration. Chemical looping combustion (CLC) could easily achieve this goal. A chemical-looping combustion system consists of a fuel reactor and an air reactor. Two reactors in the form of interconnected fluidized beds are used in the process: (1) a fuel reactor where the oxygen carrier is reduced by reaction with the fuel, and (2) an air reactor where the reduced oxygen carrier from the fuel reactor is oxidized with air. The outlet gas from the fuel reactor consists of CO{sub 2} and H{sub 2}O, while the outlet gas stream from the air reactor contains only N{sub 2} and some unused O{sub 2}. The water in combustion products can be easily removed by condensation and pure carbon dioxide is obtained without any loss of energy for separation. Until now, there is little literature about mathematical modeling of chemical-looping combustion using the computational fluid dynamics (CFD) approach. In this work, the reaction kinetic model of the fuel reactor (CaSO{sub 4}+ H{sub 2}) is developed by means of the commercial code FLUENT and the effects of partial pressure of H{sub 2} (concentration of H{sub 2}) on chemical looping combustion performance are also studied. The results show that the concentration of H{sub 2} could enhance the CLC performance.

Baosheng Jin; Rui Xiao; Zhongyi Deng; Qilei Song [Southeast University (China). Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education

2009-07-01T23:59:59.000Z

415

Multiple System Rate Process  

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

DSW Multiple System Transmission Rate Process DSW Multiple System Transmission Rate Process Federal Register Notice Withdrawing Rate Proposal (PDF) Formal Process Extension Federal Register Notice (PDF) Customer Savings Under Various MSTR (XLS) Public Information Forum March 29, 2005 Customer Meeting Overview (Power Point) Customer Meeting Overview (PDF) Customer Meeting Transcript (PDF) Public Comment Forum April 6, 2005 Customer Meeting Transcript (PDF) Response Letter 5-17-05 (PDF) Customer Letters Tonopah ID-5/25/05 (PDF) APS-5/26/05 (PDF) SRP-5/27/05 (PDF) RSLynch-6/1/05 (PDF) KRSaline-6/1/05 (PDF) Formal Process Federal Register Notice (Word) Federal Register Notice (PDF) Brochure (Word) Appendices to Brochure: A B C D E1 E2 F1 F2 GH Public Information Forum July 14, 2004 Customer Meeting Overview (Power Point)

416

Multiple sclerosis and interferon  

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

Multiple sclerosis and interferon Multiple sclerosis and interferon Name: iguanajoe Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: I have recently read that interferon is being used as a treatment for multiple sclerosis. Please explain how it affects the nerve tissue and how effective it is. Replies: Interferon is a cell to cell chemical messenger which essentially protects cells from viruses. That is, when a virus infects a cell, it sends out interferon, which is received by neighboring cells. A biochemical reaction then follows which builds the cells resistance viruses, and hopefully, it will be enough to prevent the virus from spreading. If there is work with interferon and MS, perhaps some researchers believe that MS is caused by a viral infection that destroys nervous tissue. r, that viruses cause some genetic mutation which compromises the maintenance of healthy nervous tissue. By the way, the genetic cause for another muscular-nervous disorder, Lou Gherigs Disease or ALS, was recently found to be a hereditary genetic disorder. People susceptible to ALS did not have a gene which codes for a certain superoxide dismutase antioxidant enzyme, necessary to maintain healthy nervous tissue and prevent it from free radical destruction. Maybe the cause of MS is similar.

417

U.S. Department of Energy Energy Service Companies  

Broader source: Energy.gov [DOE]

Energy service companies (ESCOs) are awarded indefinite-delivery, indefinite-quantity (IDIQ) U.S. Department of Energy (DOE) energy savings performance contracts (ESPCs) based on demonstrated capabilities to manage the development and implementation of multiple ESPC projects worldwide.

418

A WDM Silicon Photonic Transmitter based on Carrier-Injection Microring Modulators  

E-Print Network [OSTI]

A WDM Silicon Photonic Transmitter based on Carrier- Injection Microring Modulators Chin-Hui Chen1 photonic transmitter based on carrier-injection type microring modulators. Resonant wavelengths can be adjusted by both thermal heaters and bias tuning. OCIS codes: (200.4650) Optical interconnects; (250

Palermo, Sam

419

Efficiency Modeling of Tuning Techniques for Silicon Carrier Injection Ring Resonators  

E-Print Network [OSTI]

@tamu.edu Abstract: Modeling of carrier injection ring resonator devices with common thermal tuning and a new dual-bias/thermal leverages both bias and thermal tuning for carrier-injection ring modulators, which provide large refractive common tuning methods considered are thermal and bias (current injection) tuning. Thermal tuning

Palermo, Sam

420

Telecommunications Policy 28 (2004) 559578 Can broadband over powerline carrier (PLC) compete?  

E-Print Network [OSTI]

Telecommunications Policy 28 (2004) 559­578 Can broadband over powerline carrier (PLC) compete Abstract Powerline carrier (PLC) communications have been heralded by the FCC as the ``3rd wire'' to every on the United States). Results indicate that PLC does not appear to represent a major disruptive technology

Note: This page contains sample records for the topic "multiple energy carriers" 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

Evaluation of Novel Ceria-Supported Metal Oxides As Oxygen Carriers for Chemical-Looping Combustion  

E-Print Network [OSTI]

Evaluation of Novel Ceria-Supported Metal Oxides As Oxygen Carriers for Chemical-Looping Combustion and examined as oxygen carrier materials for chemical-looping combustion (CLC). Unlike conventional support agglomeration. 1. INTRODUCTION 1.1. Chemical-Looping Combustion. Chemical-looping combustion (CLC

Azad, Abdul-Majeed

422

Reduction Kinetics of a CasO4 Based Oxygen Carrier for Chemical-Looping Combustion  

Science Journals Connector (OSTI)

The CaSO4...based oxygen carrier has been proposed as an alternative low cost oxygen carrier for Chemical-looping combustion (CLC) of coal. The reduction of...4 to CaS is an important step for the cyclic process ...

R. Xiao; Q. L. Song; W. G. Zheng; Z. Y. Deng…

2010-01-01T23:59:59.000Z

423

Reduction Kinetics of Perovskite-Based Oxygen Carriers for Chemical Looping Combustion  

Science Journals Connector (OSTI)

Reduction Kinetics of Perovskite-Based Oxygen Carriers for Chemical Looping Combustion ... Industrial & Engineering Chemistry Research (1996), 35 (7), 2469-2472 CODEN: IECRED; ISSN:0888-5885. ... NiO particles mixed with yttria-stabilized zirconia have very good properties for the oxygen carrier in the loop with respect to the reaction rate, conversion, and phys. ...

Zahra Sarshar; Serge Kaliaguine

2013-04-25T23:59:59.000Z

424

Carrier envelope phase stabilization of a femtosecond laser and iodine spectroscopy  

E-Print Network [OSTI]

for carrier envelope phase stabilization. An f to 2f interferometer was used to detect the carrier envelope offset frequency, and a fast photo diode was employed to measure the repetition rate. Two similar designed phase lock loops are used to stabilize both...

Zhu, Feng

2006-10-30T23:59:59.000Z

425

Reduction Kinetics of Cu-Based Oxygen Carriers for Chemical Looping Air Separation  

Science Journals Connector (OSTI)

Only Sahir et al. performed a rate analysis from the reported batch fluidized bed CLOU experimental data of Mexican petcoke particles by a CuO/ZrO2 oxygen carrier. ... data of Mexican petcoke particles by a CuO/ZrO2 oxygen carrier. ...

Kun Wang; Qingbo Yu; Qin Qin

2013-08-02T23:59:59.000Z

426

Uni-Traveling-Carrier Photodiodes with Increased Output Response and Low Intermodulation  

E-Print Network [OSTI]

Uni-Traveling-Carrier Photodiodes with Increased Output Response and Low Intermodulation Distortion-traveling-carrier photodiodes have been fabricated and tested to investigate the influence of the doping profile in several of the device layers on saturation characteristics and linearity. Two particular photodiode (PD) structures

Bowers, John

427

Extreme ultraviolet carrier-frequency shearing interferometry of a lithographic four-mirror optical system  

E-Print Network [OSTI]

Extreme ultraviolet carrier-frequency shearing interferometry of a lithographic four-mirror optical of an EUV Schwarzschild objective.13 Direct comparison of this LSI to the PS/PDI has demon- strated a root-grating, carrier- frequency LSI for testing a lithographic four-mirror EUV optical system. The tests were performed

428

Free carrier induced spectral shift for GaAs filled metallic hole arrays  

E-Print Network [OSTI]

. Soref, and J. A. D. Alamo, "Carrier-induced change in refractive index of InP, GaAs, and InGaAsP," IEEE-photon absorption (3PA) assisted by strongly enhanced local fields, reduce the refractive index of GaAs in ~200-nm thick active area through band filling and free carrier absorption. Therefore, the surface plasma wave

New Mexico, University of

429

Reprintedfromthe WorldEnergyCouncilJournal,July 1998 A liechnolog tical ,Itis be~oming ,more a~d more difficult to meet  

E-Print Network [OSTI]

tighter "end-of-pipe" Strategy for Making pollution emission controls on fossil energy .conversion devices as an energy carrier, and that fossil fuels would have large roles in providing the needed hydrogen even by pipeline as a H2 or an energy carrier such as a hydrocarbon dense supercritical fluid to where it can

430

6th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion Xi'an, China, 11-15 July 2009  

E-Print Network [OSTI]

6th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion Xi, hydrogen fuel, obtained from ethanol, is a potentially strong contender as an energy carrier based for more secure and cleaner energy carrier (Barreto, Makihira, and Riahi 2003). Hydrogen can be produced

Khandekar, Sameer

431

A material's multiple personalities | Argonne National Laboratory  

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

News News Press Releases Feature Stories In the News Experts Guide Media Contacts Social Media Photos Videos Fact Sheets, Brochures and Reports Summer Science Writing Internship The brightness and energy of X-ray beams are critical properties for research. The APS Upgrade will make our X-ray beams brighter, meaning more X-rays can be focused onto a smaller, laser-like spot, allowing researchers to gather more data in greater detail in less time. A material's multiple personalities By Jared Sagoff * September 11, 2013 Tweet EmailPrint ARGONNE, Ill. - Just like people, materials can sometimes exhibit "multiple personalities." This kind of unusual behavior in a certain class of materials has compelled researchers at the U.S. Department of Energy's Argonne National Laboratory to take a closer look at the precise

432

Excitonic and free-carrier polarizations of bulk GaAs studied by femtosecond coherent spectroscopy  

Science Journals Connector (OSTI)

The transient third-order polarization at the band gap of undoped and p-doped GaAs is investigated by spectrally and temporally resolved four-wave mixing. Excitonic and free-carrier contributions simultaneously excited within the bandwidth of the 100-fs pulses are clearly distinguished by their different spectral envelopes. The excitonic part dominates at carrier densities below 1016 cm-3 and shows a time evolution governed by exciton–free-carrier scattering and by many-body effects. At higher density, the free-carrier polarization has a strength similar to the exciton contribution and exhibits a spectrum resonant to the femtosecond pulses with a photon-echo-like temporal behavior. The data are analyzed by a numerical solution of the semiconductor Bloch equations including an ensemble Monte Carlo simulation of the scattering dynamics of the carriers. The theoretical model is in good agreement with the experimental results.

A. Leitenstorfer; A. Lohner; K. Rick; P. Leisching; T. Elsaesser; T. Kuhn; F. Rossi; W. Stolz; K. Ploog

1994-06-15T23:59:59.000Z

433

Comments of East Central Energy- Minnesota | Department of Energy  

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

East Central Energy- Minnesota East Central Energy- Minnesota Comments of East Central Energy- Minnesota Because of the lack of ubiquitous coverage by major carriers or operating telephone companies, East Central Energy has contracted with our G&T, Great River Energy for private wireless services to our substations. No single vendor or combination of several vendors could provide an integrated solution Great River Energy has deployed a fully integrated IP network to 36 of ECE's remote sites of our electric system. The IP network transports data information for SCADA and AMR; metering information. We also use this network to perform maintenance on substation control equipment. The rural environment and substation in particular present challenges. Carriers and telephone companies build to mass markets. Substations are

434

Spectroscopy of Charge Carriers and Traps in Field-Doped Single Crystal Organic Semiconductors  

SciTech Connect (OSTI)

The proposed research aims to achieve quantitative, molecular level understanding of charge carriers and traps in field-doped crystalline organic semiconductors via in situ linear and nonlinear optical spectroscopy, in conjunction with transport measurements and molecular/crystal engineering. Organic semiconductors are emerging as viable materials for low-cost electronics and optoelectronics, such as organic photovoltaics (OPV), organic field effect transistors (OFETs), and organic light emitting diodes (OLEDs). Despite extensive studies spanning many decades, a clear understanding of the nature of charge carriers in organic semiconductors is still lacking. It is generally appreciated that polaron formation and charge carrier trapping are two hallmarks associated with electrical transport in organic semiconductors; the former results from the low dielectric constants and weak intermolecular electronic overlap while the latter can be attributed to the prevalence of structural disorder. These properties have lead to the common observation of low charge carrier mobilities, e.g., in the range of 10-5 - 10-3 cm2/Vs, particularly at low carrier concentrations. However, there is also growing evidence that charge carrier mobility approaching those of inorganic semiconductors and metals can exist in some crystalline organic semiconductors, such as pentacene, tetracene and rubrene. A particularly striking example is single crystal rubrene (Figure 1), in which hole mobilities well above 10 cm2/Vs have been observed in OFETs operating at room temperature. Temperature dependent transport and spectroscopic measurements both revealed evidence of free carriers in rubrene. Outstanding questions are: what are the structural features and physical properties that make rubrene so unique? How do we establish fundamental design principles for the development of other organic semiconductors of high mobility? These questions are critically important but not comprehensive, as the nature of charge carriers is known to evolve as the carrier concentration increases, due to the presence of intrinsic disorder in organic semiconductors. Thus, a complementary question is: how does the nature of charge transport change as a function of carrier concentration?

Zhu, Xiaoyang

2014-12-10T23:59:59.000Z

435

Reduction kinetics of Cu-, Ni-, and Fe-based oxygen carriers using syngas (CO + H{sub 2}) for chemical-looping combustion  

SciTech Connect (OSTI)

The reactivity of three Cu-, Fe-, and Ni-based oxygen carriers to be used in a chemical-looping combustion (CLC) system using syngas as fuel has been analyzed. The oxygen carriers exhibited high reactivity during reduction with fuel gases present in syngas (H{sub 2} and CO), with average values in the range 8-30% min{sup -1}. No effect of the gas products (H{sub 2}O, CO{sub 2}) on the reduction reaction rate was detected. The kinetic parameters of reaction with H{sub 2} and CO have been determined by thermogravimetric analysis. The grain model with spherical or platelike geometry in the grain was used for the kinetic determination, in which the chemical reaction controlled the global reaction rate. The activation energies determined for these reactions were low, with values ranging from 14 to 33 kJ mol{sup -1}. The reaction order depended on the reacting gas, and values from 0.5 to 1 were found. Moreover, the reactivity of the oxygen carriers when both H{sub 2} and CO are simultaneously present in the reacting gases has been analyzed, both at atmospheric and pressurized conditions. For the Cu- and Fe-based oxygen carriers, the reaction rate of the oxygen carrier with syngas corresponded to the addition of the reaction rates for the individual fuel gases, H{sub 2} and CO. For the Ni-based oxygen carrier, the reaction rate was that corresponding to the fuel gas that reacted faster with the oxygen carrier at the reacting conditions (fuel concentration, temperature, and pressure). The consequences of the behavior of the reaction of syngas and the water-gas shift (WGS) equilibrium on the design of the fuel reactor of a CLC system have been analyzed. A preliminary estimation of the solids inventory for the use of syngas in the fuel reactor of a CLC system gave values in the range of 19-34 kg MW{sup -1} when the WGS equilibrium was considered to be instantaneous. 8 figs., 4 tabs.

Alberto Abad; Francisco Garcia-Labiano; Luis F. de Diego; Pilar Gayn; Juan Adnez [Instituto de Carboquimica (CSIC), Zaragoza (Spain). Department of Energy and Environment

2007-08-15T23:59:59.000Z

436

Renewable Energy Optimization (REopt) (Fact Sheet)  

SciTech Connect (OSTI)

REopt is an energy planning platform offering concurrent, multiple technology integration and optimization capabilities to help clients meet their cost savings and energy performance goals.

Not Available

2014-06-01T23:59:59.000Z

437

Primary Photosynthetic Energy Conversion in Bacterial Reaction Centers  

Science Journals Connector (OSTI)

The development of human societies is strongly influenced by the available energetic resources. In a period where the limitations of conventional fossil energy carriers become as evident as the often uncontrollab...

Prof. Dr. Wolfgang Zinth; J. Wachtveitl

2008-01-01T23:59:59.000Z

438

ITP Industrial Distributed Energy: Review of Thermally Activated...  

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

and Absorption chillers 400 kW United Technologies Research Center, East Hartford, CT DTE Energy Technologies and Carrier Corp. 2.84 Gas engines and Absorption chiller 290 kW -...

439

Hydrogen Production R&D Activities | Department of Energy  

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

R&D Activities Hydrogen Production R&D Activities An important advantage to using hydrogen as an energy carrier is that it can be produced from a variety of abundant and domestic...

440

RECENT FIELD EXPERIENCE WITH MULTIPLE COOPERATING SOLAR-POWERED AUVS  

E-Print Network [OSTI]

, the operator would typically observe which SAUV had the most energy reserve based on its acoustic status packets and decide to employ the one with the most energy reserve. The operator would then go through a set of enabling tools and technologies which allow us to test and evaluate multiple cooperating AUVs

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


441

Optimal sequencing of a cooling tower with multiple cells  

E-Print Network [OSTI]

This paper evaluates the energy savings potential of multi-cell cooling tower optimal sequencing control methods. Annual tower fan energy usage is calculated for a counter-flow tower with multiple variable-speed fans. Effectiveness-NTU tower model...

Zhang, Z.; Liu, J.

2012-01-01T23:59:59.000Z

442

The Relativistic Dynamics of Photon Gas Two dynamic equations are established in photon gas, which is just the carrier or medium of electromagnetic waves  

E-Print Network [OSTI]

The carrier or medium of electromagnetic waves has been vainly searched for many years, and now it has been caught after the establishment of the dynamic equations in photon gas. The photon's rest mass has been estimated from the cosmic background temperature in space where the photon gas is at an open state of thermal equilibrium, and the photon's proper magnetic moment is calculated from the dynamic equations of photon gas too. As the carrier of electromagnetic waves, the photon gas is a discrete medium at very high frequency, and then the Bohr's electron is hardly to emit energy in wave form and can be stably rounding the nuclei in discrete orbits at lower temperature.

Jikang Chen

2010-03-01T23:59:59.000Z

443

Renewable sources of energy and technologies in Austria: Present situation, goals and prospects  

Science Journals Connector (OSTI)

The main goal of the energy policy of the Austrian government is, beside of a more efficient use of energy, the increase of renewable sources of energy. The technical, economical and ecological aspects of renewable sources of energy and their technologies are analysed and the present situation of renewable sources of energy in Austria and its prospects are described. Of the renewable energy carriers the following resources are of importance in Austria: hydropower, firewood, biogenic energy carriers, including fuels, solar energy and ambient heat and geothermic energy.

Gerhard Faninger

1994-01-01T23:59:59.000Z

444

Selection and Application of Binders for CaSO4 Oxygen Carrier in Chemical-Looping Combustion  

Science Journals Connector (OSTI)

Selection and Application of Binders for CaSO4 Oxygen Carrier in Chemical-Looping Combustion ... CaSO4 has recently been recognized as a promising oxygen carrier in chemical-looping combustion (CLC) for CO2 capture. ... Performance of Ca-Based Oxygen Carriers Decorated by K2CO3 or Fe2O3 for Coal Chemical Looping Combustion ...

Shiming Liu; Dongho Lee; Ming Liu; Lili Li; Rong Yan

2010-11-24T23:59:59.000Z

445

Performance of Hematite/Ca2Al2SiO7 Oxygen Carrier in Chemical Looping Combustion of Coal  

Science Journals Connector (OSTI)

Performance of Hematite/Ca2Al2SiO7 Oxygen Carrier in Chemical Looping Combustion of Coal ... In this work, a novel Ca-enhanced hematite oxygen carrier was developed for chemical looping combustion of coal. ... Low-Temperature Chemical Looping Combustion for Removing Unburnt Gaseous Components with a Cement-Supported CuO Oxygen Carrier ...

Tao Song; Laihong Shen; Siwen Zhang; Dingqian Chen; Jun Xiao

2013-05-14T23:59:59.000Z

446

Cleaning Glass Slides and Coverslips The following carriers can be purchased from the Fluoroware division of Entegris  

E-Print Network [OSTI]

Cleaning Glass Slides and Coverslips Materials The following carriers can be purchased from coverslips. - Handle for LCD Carrier (Polypropylene) / Catalog # A45-03-0603 For 3" glass slides. - Carrier and seal with cover. The glass is now ready for storage. Before Use - Before using a slide or coverslip

Fygenson, Deborah Kuchnir

447

Transport of the Antitumor Antibiotic CI-920 into L1210 Leukemia Cells by the Reduced Folate Carrier System  

Science Journals Connector (OSTI)

...carrier system and could be of fundamental importance for understanding...carrier system and could be of fundamental importance for understanding...carrier system and could be of fundamental importance for understanding...count with a Coulter Model ZM electronic cell counter (Coulter Electron...

David W. Fry; Judith A. Besserer; and Theodore J. Boritzki

1984-08-01T23:59:59.000Z

448

Technical Assessment of Organic Liquid Carrier Hydrogen Storage...  

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

cell system by controlling the hydrogen utilization in such a manner that the thermal energy needed for the dehydrogenation reaction is provided by burning the remaining...

449

Metal Organic Heat Carriers for Enhanced Geothermal Systems  

Broader source: Energy.gov [DOE]

DOE Geothermal Program Peer Review 2010 - Presentation. This project addresses Energy Conversion Barrier N -Inability to lower the temperature conditions under which EGS power generation is commercially viable.

450

Clean energy funds: An overview of state support for renewable energy  

E-Print Network [OSTI]

sustainable renewable energy marketplace it needed to target multiple facets of the market simultaneously, including marketing, education,

Bolinger, Mark; Wiser, Ryan; Milford, Lew; Stoddard, Michael; Porter, Kevin

2001-01-01T23:59:59.000Z

451

Multiple layer insulation cover  

DOE Patents [OSTI]

A multiple layer insulation cover for preventing heat loss in, for example, a greenhouse, is disclosed. The cover is comprised of spaced layers of thin foil covered fabric separated from each other by air spaces. The spacing is accomplished by the inflation of spaced air bladders which are integrally formed in the cover and to which the layers of the cover are secured. The bladders are inflated after the cover has been deployed in its intended use to separate the layers of the foil material. The sizes of the material layers are selected to compensate for sagging across the width of the cover so that the desired spacing is uniformly maintained when the cover has been deployed. The bladders are deflated as the cover is stored thereby expediting the storage process and reducing the amount of storage space required.

Farrell, James J. (Livingston Manor, NY); Donohoe, Anthony J. (Ovid, NY)

1981-11-03T23:59:59.000Z

452

Traits and Multiple Genes  

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

Traits and Multiple Genes Traits and Multiple Genes Name: Frank Location: N/A Country: N/A Date: N/A Question: Please, could you give me an example of how human traits are controlled by more than one pair of alleles? Replies: Your question is just a bit vague, there are different answers depending on just what your question is. I will answer it in terms of polygenic traits also known as additive alleles. When you think of traits such as skin color, hair color and eye color, or traits where there is a wide range of phenotypes they are usually under the control of more than one pair of alleles. These alleles can even be on different chromosomes! Each pair of additive alleles adds to the phenotype. For instance in the case of skin color, scientists now believe that 3 genes control skin color. You then get 3 sets from your mother and 3 from your father for 6 possibilities. If all 6 of the alleles are for dark skin, you will have the darkest possible skin. If you have 5 dark alleles and one light, you will have very dark skin. If you have all 6 light alleles then you will have the lightest skin possible. Is it possible to have a child that is light skinned when both parents are dark-skinned? Well, not if both have all 6 dark alleles, but if they have some light alleles and the child inherits all of the possible light alleles available, then yes, the child could have lighter skin than either parent. It is now believed that eye color is not simply brown being dominant over blue because how many people do you know that have the same shade of brown or blue eyes? Eye color must also be polygenic.

453

AM with Multiple Merlins  

E-Print Network [OSTI]

We introduce and study a new model of interactive proofs: AM(k), or Arthur-Merlin with k non-communicating Merlins. Unlike with the better-known MIP, here the assumption is that each Merlin receives an independent random challenge from Arthur. One motivation for this model (which we explore in detail) comes from the close analogies between it and the quantum complexity class QMA(k), but the AM(k) model is also natural in its own right. We illustrate the power of multiple Merlins by giving an AM(2) protocol for 3SAT, in which the Merlins' challenges and responses consist of only n^{1/2+o(1)} bits each. Our protocol has the consequence that, assuming the Exponential Time Hypothesis (ETH), any algorithm for approximating a dense CSP with a polynomial-size alphabet must take n^{(log n)^{1-o(1)}} time. Algorithms nearly matching this lower bound are known, but their running times had never been previously explained. Brandao and Harrow have also recently used our 3SAT protocol to show quasipolynomial hardness for approximating the values of certain entangled games. In the other direction, we give a simple quasipolynomial-time approximation algorithm for free games, and use it to prove that, assuming the ETH, our 3SAT protocol is essentially optimal. More generally, we show that multiple Merlins never provide more than a polynomial advantage over one: that is, AM(k)=AM for all k=poly(n). The key to this result is a subsampling theorem for free games, which follows from powerful results by Alon et al. and Barak et al. on subsampling dense CSPs, and which says that the value of any free game can be closely approximated by the value of a logarithmic-sized random subgame.

Scott Aaronson; Russell Impagliazzo; Dana Moshkovitz

2014-01-27T23:59:59.000Z

454

The energy power game of the European Commission : Neofunctionalism and European energy policy integration.  

E-Print Network [OSTI]

??The EU is faced with multiple challenges in the energy sector. Along with the ongoing efforts to liberalise the energy market, the EU is challenged… (more)

Tessem, Niklas Kalvø

2008-01-01T23:59:59.000Z

455

Renewable Energy and Climate Change  

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

for energy uses are broad. Complex systems with multiple uses and location resources and markets dependence * Intensification of agricultural practices, e.g. grazing for pasture...

456

Study on Vapour Insulation Technology in MOSS-Type Tanks of LNG Carrier  

Science Journals Connector (OSTI)

The paper introduces the importance of LNG carrier cargo tank insulation, the principle of...3 example of the mother-ship and the results comparison with the actual ship, reaches a conclusion that vapour insulati...

Boyang Li; Yunqiu Zhang; Diyang Li…

2011-01-01T23:59:59.000Z

457

Technical Assessment of Organic Liquid Carrier Hydrogen Storage Systems for Automotive Applications  

Fuel Cell Technologies Publication and Product Library (EERE)

In 2007-2009, the DOE Hydrogen Program conducted a technical assessment of organic liquid carrier based hydrogen storage systems for automotive applications, consistent with the Program’s Multiyear Re

458

Microsticks as solid-phase carriers for enzyme-linked immunosorbent assays.  

Science Journals Connector (OSTI)

...Microsticks. A diagram with the dimensions...coated with carrier materials for the solid phase...depending on the base material, used uncoated...lmm Im FIG. 1. Diagram of microstick with h manipulation and handling, collar rim sticks...

I C Shekarchi; J L Sever; L A Ward; D L Madden

1982-12-01T23:59:59.000Z

459

Sewage sludge ash as an alternative low-cost oxygen carrier for chemical looping combustion  

Science Journals Connector (OSTI)

In this paper, novel low-cost oxygen carriers containing Fe2O3 are evaluated for use in chemical looping combustion. Sewage sludge ashes and reference samples were...2...) fuel and a solid fuel (hard coal) were t...

Ewelina Ksepko

2014-06-01T23:59:59.000Z

460

Study on modification of Cu-based oxygen carrier for chemical looping combustion  

Science Journals Connector (OSTI)

Chemical looping combustion (CLC) is a promising technology for...2O4...spinel, formed after the first few redox cycles, which is responsible for promoting the thermal stability of the oxygen carriers. SEM result...

Hou-yin Zhao; Yan Cao; William Orndorff…

2013-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "multiple energy carriers" 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

Investigation of Coal Fueled Chemical Looping Combustion Using Fe3O4 as Oxygen Carrier  

Science Journals Connector (OSTI)

Chemical-looping combustion (CLC) is a novel combustion technique with CO2 separation. Magnetite (Fe3O4) was selected as the oxygen carrier and Shenhua coal (Inner Mongolia, China) as the fuel for this study. The...

Wenguo Xlang; Xiaoyan Sun; Sha Wangt…

2010-01-01T23:59:59.000Z

462

Lanthanum-promoted copper-based oxygen carriers for chemical looping combustion process  

Science Journals Connector (OSTI)

Copper-based oxygen carriers have high reactivity and favorable thermodynamic properties in the innovative chemical looping combustion (CLC), which results in the inherent...2. The major challenge of copper-based...

Yan Cao; Hou-Yin Zhao; Song P. Sit…

2014-06-01T23:59:59.000Z

463

Preparation of copper-based oxygen carrier supported by titanium dioxide  

Science Journals Connector (OSTI)

Chemical-looping combustion (CLC) is an indirect oxygen combustion strategy, considered to be the most cost...2...) inherently concentrated. The oxygen carriers in the combustion process are subjected to severe e...

Yaowen Cui; Yan Cao; Wei-ping Pan

2013-12-01T23:59:59.000Z

464

Modeling of Chemical Looping Combustion of Methane Using a Ni-Based Oxygen Carrier  

Science Journals Connector (OSTI)

Modeling of Chemical Looping Combustion of Methane Using a Ni-Based Oxygen Carrier ... The FR and loop seal are both bubbling fluidized beds. ... Industrial & Engineering Chemistry Research (2010), 49 (21), 10200-10211 CODEN: IECRED; ISSN:0888-5885. ...

Ahmed Bougamra; Lu Huilin

2014-03-31T23:59:59.000Z

465

Burning of Hydrocarbon Fuels Directly in a Water-Based Heat Carrier  

Science Journals Connector (OSTI)

A principal possibility of burning hydrocarbon fuels directly in a water-based heat carrier is demonstrated. The first experimental results are presented by an example of burning acetylene in water with initia...

V. S. Teslenko; V. I. Manzhalei; R. N. Medvedev…

2010-07-01T23:59:59.000Z

466

Carrier-suppressed modulation and self-mixing demodulation for vibration measurement  

Science Journals Connector (OSTI)

We present a double-sideband suppressed-carrier (DSB-SC) technique achieved by an optical balanced detection approach for measuring small vibrations. The baseband signal is recovered...

Lang, Kuo-Chen; Teng, Hung-Jin; Teng, Hui-Kang

2013-01-01T23:59:59.000Z

467

A solution to the inherent list on Nimitz class aircraft carriers  

E-Print Network [OSTI]

Nimitz class aircraft carriers possess an inherent list to starboard that their list control systems (LCS) are typically unable to correct while under Combat Load Conditions. As a result, it has become necessary to use ...

Wolfson, Dianna

2004-01-01T23:59:59.000Z

468

Structure of apo acyl carrier protein and a proposal to engineer protein crystallization through metal ions  

Science Journals Connector (OSTI)

To demonstrate a new strategy for engineering crystal lattices through metal-mediated interactions, apo acyl carrier protein has been crystallized in the presence of zinc ions. The structure was solved with MAD phasing using zinc anomalous signals.

Qiu, X.

2004-08-26T23:59:59.000Z

469

E-Print Network 3.0 - ancient oxygen carrier Sample Search Results  

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

reservoir on Earth. This is an important... , as they are the main carrier of rare earth elements (REE), and yield valuable information on DH of Mars ... Source: UCLA, Ion...

470

Superhydrophobic and Superoleophobic Nanocellulose Aerogel Membranes as Bioinspired Cargo Carriers on Water and Oil  

Science Journals Connector (OSTI)

Superhydrophobic and Superoleophobic Nanocellulose Aerogel Membranes as Bioinspired Cargo Carriers on Water and Oil ... We foresee applications including buoyant, gas permeable, dirt-repellent coatings for miniature sensors and other devices floating on generic liquid surfaces. ...

Hua Jin; Marjo Kettunen; Ari Laiho; Hanna Pynnönen; Jouni Paltakari; Abraham Marmur; Olli Ikkala; Robin H. A. Ras

2011-01-19T23:59:59.000Z

471

Excited Carrier Dynamics of ?-Cr2O3/?-Fe2O3 Core...  

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

Excited Carrier Dynamics of ?-Cr2O3?-Fe2O3 Core-Shell Nanostructures. Abstract: In this work ?-Cr2O3?-Fe2O3 core-shell polycrystalline...

472

Western Interstate Nuclear Compact State Nuclear Policy (Multiple States) |  

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

Western Interstate Nuclear Compact State Nuclear Policy (Multiple Western Interstate Nuclear Compact State Nuclear Policy (Multiple States) Western Interstate Nuclear Compact State Nuclear Policy (Multiple States) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor Industrial Institutional Investor-Owned Utility Local Government Municipal/Public Utility Nonprofit Retail Supplier Rural Electric Cooperative State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Arizona Program Type Siting and Permitting Provider Western Interstate Energy Board Legislation authorizes states' entrance into the Western Interstate Nuclear Compact, which aims to undertake the cooperation of participating states in

473

Method for High Accuracy Multiplicity Correlation Measurements  

E-Print Network [OSTI]

Multiplicity correlation measurements provide insight into the dynamics of high energy collisions. Models describing these collisions need these correlation measurements to tune the strengths of the underlying QCD processes which influence all observables. Detectors, however, often possess limited coverage or reduced efficiency that influence correlation measurements in obscure ways. In this paper, the effects of non-uniform detection acceptance and efficiency on the measurement of multiplicity correlations between two distinct detector regions (termed forward-backward correlations) are derived. This result is transformed into a correction method. Verification of the presented correction method is provided through simulations using different event generators. The result of the method allows one to correct measurements in a simulation independent manner with high accuracy and thereby shed light on the underlying processes.

Gulbrandsen, K

2014-01-01T23:59:59.000Z

474

Cerium Oxide Promoted Iron-based Oxygen Carrier for Chemical Looping Combustion  

Science Journals Connector (OSTI)

Cerium Oxide Promoted Iron-based Oxygen Carrier for Chemical Looping Combustion ... It entails the use of an oxygen carrier (OC), usually a metal oxide, to provide oxygen for combusting fuels in a fuel reactor (FR) and then the reoxidization of the OC in a separate air reactor (AR). ... Preprints of Symposia - American Chemical Society, Division of Fuel Chemistry (2004), 49 (2), 815-816 CODEN: PSADFZ; ISSN:1521-4648. ...

Fang Liu; Liangyong Chen; James K. Neathery; Kozo Saito; Kunlei Liu

2014-10-01T23:59:59.000Z

475

Hadron multiplicities at the LHC  

E-Print Network [OSTI]

We present the predictions for hadron multiplicities in pp, pA and AA collisions at the LHC based on our approach to the Color Glass Condensate.

D. Kharzeev; E. Levin; M. Nardi

2007-07-05T23:59:59.000Z

476

Multicycle study on chemical-looping combustion of simulated coal gas with a CaSO{sub 4} oxygen carrier in a fluidized bed reactor  

SciTech Connect (OSTI)

The cyclic test of a CaSO{sub 4}-based oxygen carrier (natural anhydrite) in alternating reducing simulated coal gas and oxidizing conditions was performed at 950{degree}C in a fluidized bed reactor at atmospheric pressure. A high concentration of CO{sub 2} was obtained in the reduction. The H{sub 2} and CO conversions and CO{sub 2} yield increased initially and final decreased significantly. The release of SO{sub 2} and H{sub 2}S during the cyclic test was found to be responsible for the decrease of reactivity of a CaSO{sub 4} oxygen carrier. The oxygen carrier conversion after the reduction reaction decreased gradually in the cyclic test. Through the comparison of mass-based reaction rates as a function of mass conversion at typical cycles, it was also evident that the reactivity of a CaSO{sub 4} oxygen carrier increased for the initial cycles but finally decreased after around 15 cycles. X-ray diffraction analysis revealed that the presence and intensity of the reduction sulfur species was in accordance with the results of gas conversion. The content of CaO was higher than expected, suggesting the formation of SO{sub 2} and H{sub 2}S during the cycles. Surface morphology analysis demonstrates that the natural anhydrite particle surface varied from impervious to porous after the cyclic test. It was also observed that the small grains on the surface of the oxygen carrier sintered in the cyclic tests. Energy-dispersive spectrum analysis also demonstrated the decrease of oxygen intensity after reduction, and CaO became the main component after the 20th oxidation. Pore structure analysis suggested that the particles agglomerated or sintered in the cyclic tests. The possible method for sulfur mitigation is proposed. Finally, some basic consideration on the design criteria of a CLC system for solid fuels using a CaSO{sub 4} oxygen carrier is discussed by the references and provides direction for future work. 49 refs., 10 figs., 5 tabs.

Qilei Song; Rui Xiao; Zhongyi Deng; Wenguang Zheng; Laihong Shen; Jun Xiao [Southeast University, Nanjing (China). Thermoenergy Engineering Research Institute

2008-11-15T23:59:59.000Z

477

The role of electron-electron interaction in the process of charge-carrier capture in deep quantum wells  

SciTech Connect (OSTI)

The role of electron-electron interaction in the process of electron capture to a deep quantum well is investigated. Using two-level and three-level quantum wells as examples, the basic electron-capture mechanisms, i.e., the interaction with optical phonons and the Coulomb electron-electron interaction, are considered, and the corresponding capture probabilities and electron lifetimes are calculated. The effect of Auger recombination on the charge-carrier distribution in a quantum well is also taken into account. With this taken into consideration, a set of rate equations is solved for a nonsteady-state mode, and the time dependences of the electron concentration at the ground energy level in the quantum well are found. The contributions of each of the recombination processes under consideration are shown.

Danilov, L. V., E-mail: danleon84@mail.ru; Zegrya, G. G. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)] [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)

2013-10-15T23:59:59.000Z

478

Photoinduced Energy and Charge Transfer in P3HT:SWNT Composites  

Science Journals Connector (OSTI)

(30) Given the large difference between the time scale for carrier decay and the TRMC instrument response time (?IRF ? 5 ns),(31) the confinement of both carriers to isolated tubes in the inert CMC matrix results in transient profiles that are limited by the instrument response, as demonstrated in Figure 3a, and essentially independent of pump energy (Figure S3a,b). ... The carrier collection efficiency (?c) and energy conversion efficiency (?e) of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C60 or its functionalized derivs. ... Converting solar energy into electricity provides a much-needed soln. ...

Andrew J. Ferguson; Jeffrey L. Blackburn; Josh M. Holt; Nikos Kopidakis; Robert C. Tenent; Teresa M. Barnes; Michael J. Heben; Garry Rumbles

2010-07-26T23:59:59.000Z

479

Effect of temperature-dependent energy-level shifts on a semiconductor's Peltier heat  

SciTech Connect (OSTI)

The Peltier heat of a charge carrier in a semiconductor is calculated for the situation in which the electronic energy levels are temperature dependent. The temperature dependences of the electronic energy levels, generally observed optically, arise from their dependences on the vibrational energy of the lattice (e.g., as caused by thermal expansion). It has been suggested that these temperature dependences will typically have a major effect on the Peltier heat. The Peltier heat associated with a given energy level is a thermodynamic quantity; it is the product of the temperature and the change of the entropy of the system when a carrier is added in that level. As such, the energy levels cannot be treated as explicitly temperature dependent. The electron-lattice interaction causing the temperature dependence must be expressly considered. It is found that the carrier's interaction with the atomic vibrations lowers its electronic energy. However, the interaction of the carrier with the atomic vibrations also causes an infinitesimal lowering (approx.1/N) of each of the N vibrational frequencies. As a result, there is a finite carrier-induced increase in the average vibrational energy. Above the Debye temperature, this cancels the lowering of the carrier's electronic energy. Thus, the standard Peltier-heat formula, whose derivation generally ignores the temperature dependence of the electronic energy levels, is regained. This explains the apparent success of the standard formula in numerous analyses of electronic transport experiments.

Emin, D.

1984-11-15T23:59:59.000Z

480

Energy Band Model Based on Effective Mass  

E-Print Network [OSTI]

In this work, we demonstrate an alternative method of deriving an isotropic energy band model using a one-dimensional definition of the effective mass and experimentally observed dependence of mass on energy. We extend the effective mass definition to anti-particles and particles with zero rest mass. We assume an often observed linear dependence of mass on energy and derive a generalized non-parabolic energy-momentum relation. The resulting non-parabolicity leads to velocity saturation at high particle energies. We apply the energy band model to free relativistic particles and carriers in solid state materials and obtain commonly used dispersion relations and experimentally confirmed effective masses. We apply the model to zero rest mass particles in graphene and propose using the effective mass for photons. Therefore, it appears that the new energy band model based on the effective mass can be applied to relativistic particles and carriers in solid state materials.

Viktor Ariel

2012-09-06T23:59:59.000Z

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481

FUEL CELL TECHNOLOGIES PROGRAM Hydrogen is an energy carrier, not an  

E-Print Network [OSTI]

with a renewable-source ink on paper containing at least 50% wastepaper, including 10% post consumer waste. EERE gas with carbon sequestration are preferred. Gasification Gasification is a process in which coal hydrogen through biomass gasification releases near-zero net greenhouse gases. Renewable Liquid Reforming

482

Energy spectrum of charge carriers in Ag{sub 2}Te  

SciTech Connect (OSTI)

Conductivity {sigma}(T) and Hall constant R(B, T) are studied for Ag{sub 2}Te with excess 0.1% of Te. The change in the R sign from (-) to (+) is found in dependences R(B) at various temperatures. In the temperature dependences of R in a range of 1-3 kG, two extrema are found, namely, minimum at T {approx} 60 and maximum at T {approx} 80 K, and at B {>=} 5 kG, the double change in sign of R from (-) to (+) and from (+) to (-) is found. Temperatures of sign inversion for R depend on the magnetic field. At B = 15 kG, the sign of R varies from (-) to (+) at T {approx} 38 K, and from (+) to (-) at T {approx} 70 K. It is found approximately in the region of the change in the sign of R(T), the concentration n(T) and electrical conductivity pass through the minimum. It is established that the minima of n(T) and {sigma}(T), extrema in R(T), and sign inversion for R(T) from (-) to (+) as well as the overestimated temperature dependence n{infinity}T{sup 4} are caused by localization of conduction electrons at acceptor levels entering the conduction band of Ag{sub 2}Te. The values of parameters of electrons (n, {mu}{sub n}) and holes (p, {mu}{sub p}) at the points of the change in the sign of R(T) from (-) to (+) and from (+) to (-) are determined.

Aliyev, S. A.; Agayev, Z. F., E-mail: agayevz@rambler.ru; Selimzadeh, R. I. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2008-12-15T23:59:59.000Z

483

Energy spectrum of charge carriers in Ag{sub 2}Te  

SciTech Connect (OSTI)

On the basis of investigations of the temperature and concentration dependences of kinetic coefficients (the Hall coefficientR, the electrical conductivity {sigma}, and thermopower {alpha}{sub 0}) in n-type Ag{sub 2}Te, it is established that Ag atoms in Ag{sub 2}Te create the shallow donor levels located at a distance of (0.002-7 x 10{sup -5}T) eV from the bottom of the conduction band. It is shown that silver telluride has n-type conductivity starting with the deficiency of Ag {>=} 0.01 at % in the stoichiometric composition, and it is practically impossible to achieve the stoichiometric composition in Ag{sub 2}Te.

Aliev, F. F., E-mail: farzali@physics.ab.az; Jafarov, M. B. [Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2008-11-15T23:59:59.000Z

484

TECHNICAL AND ECONOMIC ASSESSMENT OF TRANSITION STRATEGIES TOWARD WIDESPREAD USE OF HYDROGEN AS AN ENERGY CARRIER  

E-Print Network [OSTI]

hydrogen production, while in other regions electrolysis using off-peak hydropower might give the lowest hydrogen production cost. (hydrogen truck delivery, onsite production from natural gas, onsite electrolysis, and pipeline delivery. Costs

Ogden, J; Yang, Christopher; Johnson, Nils; Ni, Jason; Lin, Zhenhong

2005-01-01T23:59:59.000Z

485

Technical and Economic Assessment of Transition Strategies Toward Widespread Use of Hydrogen as an Energy Carrier  

E-Print Network [OSTI]

hydrogen production, while in other regions electrolysis using off-peak hydropower might give the lowest hydrogen production cost. (hydrogen truck delivery, onsite production from natural gas, onsite electrolysis, and pipeline delivery. Costs

Ogden, Joan M; Yang, Christopher; Johnson, Nils; Ni, Jason; Lin, Zhenhong

2005-01-01T23:59:59.000Z

486

Charge Carrier Energy Disorder in Polar Amorphous Organic Thin Films Conor Madigan and Vladimir Bulovic*  

E-Print Network [OSTI]

, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA (Received 21 July 2006; published 20 by the development of a wide variety of devices including light emitting devices [1,2], solar cells [3

487

TECHNICAL AND ECONOMIC ASSESSMENT OF TRANSITION STRATEGIES TOWARD WIDESPREAD USE OF HYDROGEN AS AN ENERGY CARRIER  

E-Print Network [OSTI]

costs to estimates for onsite hydrogen production from natural gas,cost estimates with those for onsite hydrogen production from natural gas.cost natural gas is available, steam methane reforming might be the preferred method of hydrogen production,

Ogden, J; Yang, Christopher; Johnson, Nils; Ni, Jason; Lin, Zhenhong

2005-01-01T23:59:59.000Z

488

Technical and Economic Assessment of Transition Strategies Toward Widespread Use of Hydrogen as an Energy Carrier  

E-Print Network [OSTI]

costs to estimates for onsite hydrogen production from natural gas,cost estimates with those for onsite hydrogen production from natural gas.cost natural gas is available, steam methane reforming might be the preferred method of hydrogen production,

Ogden, Joan M; Yang, Christopher; Johnson, Nils; Ni, Jason; Lin, Zhenhong

2005-01-01T23:59:59.000Z

489

Heat conductivity in the beta-FPU lattice. Solitons and breathers as energy carriers  

E-Print Network [OSTI]

This paper consists of two parts. The first part proposes a new methodological framework within which the heat conductivity in 1D lattices can be studied. The total process of heat conductivity is decomposed into two contributions where the first one is the equilibrium process at equal temperatures T of both lattice ends and the second -- non-equilibrium process with the temperature \\Delta T of one end and zero temperature of the other. The heat conductivity in the limit \\Delta T \\to 0 is reduced to the heat conductivity of harmonic lattice. A threshold temperature T_{thr} scales T_{thr}(N) \\sim N^{-3} with the lattice size N. Some unusual properties of heat conductivity can be exhibited on nanoscales at low temperatures. The thermodynamics of the \\beta-FPU lattice can be adequately approximated by the harmonic lattice. The second part testifies in the favor of the soliton and breather contribution to the heat conductivity in contrast to [N. Li, B. Li, S. Flach, PRL 105 (2010) 054102]. In the continuum limit the \\beta-FPU lattice is reduced to the modified Korteweg - de Vries equation with soliton and breather solutions. Numerical simulations demonstrate their high stability. New method for the visualization of moving solitons and breathers is suggested. An accurate expression for the dependence of the sound velocity on temperature is also obtained. Our results support the conjecture on the solitons and breathers contribution to the heat conductivity.

T. Yu. Astakhova; V. N. Likhachev; G. A. Vinogradov

2011-03-18T23:59:59.000Z

490

Energy News | Department of Energy  

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

June 17, 2010 June 17, 2010 DOE Announces More Than $76 Million for Advanced Energy-Efficient Building Technologies and Commercial Building Training Programs WASHINGTON-U.S. Energy Secretary Steven Chu today announced awards totaling more than $76 million in funding from the American Recovery and Reinvestment Act to support advanced energy-efficient building technology projects and the development of training programs for commercial building equipment technicians, building operators, and energy auditors. June 15, 2010 Deputy Secretary Poneman to Attend APEC Energy Ministers Meeting in Fukui, Japan Will also travel to Tokyo and Seoul to meet with government officials and discuss ways to strengthen cooperation on energy issues June 15, 2010 U.S. Scientific Team Draws on New Data, Multiple Scientific Methodologies

491

CX-005956: Categorical Exclusion Determination | Department of Energy  

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

56: Categorical Exclusion Determination 56: Categorical Exclusion Determination CX-005956: Categorical Exclusion Determination Development of a Practical Hydrogen Storage System Based on Liquid Organic Hydrogen Carriers and a Homogenous Catalyst CX(s) Applied: A9, B3.6 Date: 06/06/2011 Location(s): Hawaii Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Hawaii Hydrogen Carriers LLC propose to use federal funding to develop a catalyst optimized hydrogen storage media based on liquid organic hydrogen carrier and to design a commercially viable hydrogen delivery system. There are 2 parts to this project that will take place in 2 locations. Part 1 will be catalyst optimization and will take place at Hawai