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Comparative genomics of citric-acid producing Aspergillus niger ATCC 1015 versus enzyme-producing CBS 513.88

Description: The filamentous fungus Aspergillus niger exhibits great diversity in its phenotype. It is found globally, both as marine and terrestrial strains, produces both organic acids and hydrolytic enzymes in high amounts, and some isolates exhibit pathogenicity. Although the genome of an industrial enzyme-producing A. niger strain (CBS 513.88) has already been sequenced, the versatility and diversity of this species compels additional exploration. We therefore undertook whole genome sequencing of the a… more
Date: April 28, 2011
Creator: Grigoriev, Igor V.; Baker, Scott E.; Andersen, Mikael R.; Salazar, Margarita P.; Schaap, Peter J.; Vondervoot, Peter J.I. van de et al.
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Partner: UNT Libraries Government Documents Department
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Inertial Confinement Fusion R&D and Nuclear Proliferation

Description: In a few months, or a few years, the National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory may achieve fusion gain using 192 powerful lasers to generate x-rays that will compress and heat a small target containing isotopes of hydrogen. This event would mark a major milestone after decades of research on inertial confinement fusion (ICF). It might also mark the beginning of an accelerated global effort to harness fusion energy based on this science and technology. Unlike… more
Date: April 28, 2011
Creator: Goldston, Robert J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The compact Selaginella genome identifies changes in gene content associated with the evolution of vascular plants

Description: We report the genome sequence of the nonseed vascular plant, Selaginella moellendorffii, and by comparative genomics identify genes that likely played important roles in the early evolution of vascular plants and their subsequent evolution
Date: April 28, 2011
Creator: Grigoriev, Igor V.; Banks, Jo Ann; Nishiyama, Tomoaki; Hasebe, Mitsuyasu; Bowman, John L.; Gribskov, Michael et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Hybrid Forming System: Electrical-Assisted Double Side Incremental Forming (EADSIF) Process for Enhanced Formability and Geometrical Flexibility

Description: The objectives of this project are to establish the scientific bases, engineering technologies and energy/emission impact of a novel dieless forming process, Double side Incremental Forming (DSIF), and to explore the effectiveness of its hybrid variation, Electrical-Assisted Double Side Incremental Forming (EADSIF), on increasing the formability of metallic sheets. The scope of this project includes: (1) the analysis of environmental performance of the proposed new process as compared to conven… more
Date: April 28, 2012
Creator: Cao, Jian; Xia, Z. Cedric; Gutowski, Timothy G. & Roth, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of the Fe magnetic anisotropies and the CoO frozen spins in epitaxial CoO/Fe/Ag(001)

Description: CoO/Fe/Ag(001) films were grown epitaxially and studied by X-ray Magnetic Circular Dichroism (XMCD) and X-ray Magnetic Linear Dichroism (XMLD). After field cooling along the Fe[100] axis to 80 K, exchange bias, uniaxial anisotropy, and 4-fold anisotropy of the films were determined by hysteresis loop and XMCD measurements by rotating the Fe magnetization within the film plane. The CoO frozen spins were determined by XMLD measurement as a function of CoO thickness.We find that among the exchange… more
Date: April 28, 2011
Creator: Meng, J. Li, Y.; Park, J. S.; Jenkins, C. A.; Arenholz, E.; Scholl, A.; Tan, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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SLUDGE BATCH 6/TANK 51 SIMULANT CHEMICAL PROCESS CELL SIMULATIONS

Description: Qualification simulant testing was completed to determine appropriate processing conditions and assumptions for the Sludge Batch 6 (SB6) Shielded Cells demonstration of the DWPF flowsheet using the qualification sample from Tank 51 for SB6 after SRNL washing. It was found that an acid addition window of 105-139% of the DWPF acid equation (100-133% of the Koopman minimum acid equation) gave acceptable Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator (SME) results for nitrite d… more
Date: April 28, 2010
Creator: Koopman, David & Best, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

YALINA Facility a Sub-Critical Accelerator- Driven System (Ads) for Nuclear Energy Research Facility Description and an Overview of the Research Program (1997-2008).

Description: The YALINA facility is a zero-power, sub-critical assembly driven by a conventional neutron generator. It was conceived, constructed, and put into operation at the Radiation Physics and Chemistry Problems Institute of the National Academy of Sciences of Belarus located in Minsk-Sosny, Belarus. This facility was conceived for the purpose of investigating the static and dynamic neutronics properties of accelerator driven sub-critical systems, and to serve as a neutron source for investigating the… more
Date: April 28, 2010
Creator: Gohar, Y. & Smith, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quantum Phase Extraction in Isospectral Electronic Nanostructures

Description: Quantum phase is not a direct observable and is usually determined by interferometric methods. We present a method to map complete electron wave functions, including internal quantum phase information, from measured single-state probability densities. We harness the mathematical discovery of drum-like manifolds bearing different shapes but identical resonances, and construct quantum isospectral nanostructures possessing matching electronic structure but divergent physical structure. Quantum mea… more
Date: April 28, 2010
Creator: Moon, Christopher
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Quantum Detection and Invisibility in Coherent Nanostructures

Description: We address quantum invisibility in the context of electronics in nanoscale quantum structures. In analogy with metamaterials, we use the freedom of design that quantum corrals provide and show that quantum mechanical objects can be hidden inside the corral, with respect to inelastic electron scattering spectroscopy in combination with scanning tunneling microscopy, and we propose a design strategy. A simple illustration of the invisibility is given in terms of an elliptic quantum corral contain… more
Date: April 28, 2010
Creator: Fransson, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Non-diffusive spin dynamics in a two-dimensional electron gas

Description: We describe measurements of spin dynamics in the two-dimensional electron gas in GaAs/GaAlAs quantum wells. Optical techniques, including transient spin-grating spectroscopy, are used to probe the relaxation rates of spin polarization waves in the wavevector range from zero to 6 x 10{sup 4} cm{sup -1}. We find that the spin polarization lifetime is maximal at nonzero wavevector, in contrast with expectation based on ordinary spin diffusion, but in quantitative agreement with recent theories tha… more
Date: April 28, 2010
Creator: Weber, C.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Single-Atom Gating of Quantum State Superpositions

Description: The ultimate miniaturization of electronic devices will likely require local and coherent control of single electronic wavefunctions. Wavefunctions exist within both physical real space and an abstract state space with a simple geometric interpretation: this state space - or Hilbert space - is spanned by mutually orthogonal state vectors corresponding to the quantized degrees of freedom of the real-space system. Measurement of superpositions is akin to accessing the direction of a vector in Hil… more
Date: April 28, 2010
Creator: Moon, Christopher
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Task 1 Steam Oxidation (NETL-US)

Description: Some conclusions are: (1) Increased flow rates can lower chromia activity in alloys with Ti and Mn - (a) Reduced chromia activity reduces equilibrium CrO{sub 2}(OH){sub 2}(g) vapor pressures; (2) Model is very sensitive to small decreases in chromia activity at the HP turbine - (a) Upstream partial saturation of the gas phase with CrO{sub 2}(OH){sub 2}(g) can become nearly or fully saturated at the HP turbine, (b) Can radically change breakaway oxidation times from less than a year to never hap… more
Date: April 28, 2011
Creator: Holcomb, G. R.; Tylczak, J. & R. Hu,
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Climate Change, Nuclear Power and Nuclear Proliferation: Magnitude Matters

Description: Integrated energy, environment and economics modeling suggests that worldwide electrical energy use will increase from 2.4 TWe today to ~12 TWe in 2100. It will be challenging to provide 40% of this electrical power from combustion with carbon sequestration, as it will be challenging to provide 30% from renewable energy sources derived from natural energy flows. Thus nuclear power may be needed to provide ~30%, 3600 GWe, by 2100. Calculations of the associated stocks and flows of uranium, pluto… more
Date: April 28, 2011
Creator: Goldston, Robert J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SLUDGE BATCH 6/TANK 40 SIMULANT CHEMICAL PROCESS CELL SIMULATIONS

Description: Phase III simulant flowsheet testing was completed using the latest composition estimates for SB6/Tank 40 feed to DWPF. The goals of the testing were to determine reasonable operating conditions and assumptions for the startup of SB6 processing in the DWPF. Testing covered the region from 102-159% of the current DWPF stoichiometric acid equation. Nitrite ion concentration was reduced to 90 mg/kg in the SRAT product of the lowest acid run. The 159% acid run reached 60% of the DWPF Sludge Receipt… more
Date: April 28, 2010
Creator: Koopman, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Centroid and Envelope Dynamics of High-intensity Charged Particle Beams in an External Focusing Lattice and Oscillating Wobbler

Description: The centroid and envelope dynamics of a high-intensity charged particle beam are investigated as a beam smoothing technique to achieve uniform illumination over a suitably chosen region of the target for applications to ion-beam-driven high energy density physics and heavy ion fusion. The motion of the beam centroid projected onto the target follows a smooth pattern to achieve the desired illumination, for improved stability properties during the beam-target interaction. The centroid dynamics i… more
Date: April 28, 2010
Creator: Qin, Hong; Davidson, Ronald C. & Logan, B. Grant
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Science & Technology Review June 2010

Description: This month's issue has the following articles: (1) A Leader in High-Pressure Science--Commentary by William H. Goldstein; (2) Diamonds Put the Pressure on Materials--New experimental capabilities are helping Livermore scientists better understand how extreme pressure affects a material's structure; (3) Exploring the Unusual Behavior of Granular Materials--Livermore scientists are developing new techniques for predicting the response of granular materials under pressure; (4) A 1-Ton Device in a … more
Date: April 28, 2010
Creator: Blobaum, K. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Physics of Neutralization of Intense High-Energy Ion Beam Pulses by Electrons

Description: Neutralization and focusing of intense charged particle beam pulses by electrons forms the basis for a wide range of applications to high energy accelerators and colliders, heavy ion fusion, and astrophysics. For example, for ballistic propagation of intense ion beam pulses, background plasma can be used to effectively neutralize the beam charge and current, so that the self-electric and self- magnetic fields do not affect the ballistic propagation of the beam. From the practical perspective of… more
Date: April 28, 2010
Creator: Kaganovich, I. D.; Davidson, R. C.; Dorf, M. A.; Startsev, E. A.; Sefkow, A. B.; Lee, E. P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of China's Energy-Saving and Emission-Reduction Accomplishments and Opportunities During the 11th Five Year Plan

Description: During the period 1980 to 2002, China experienced a 5% average annual reduction in energy consumption per unit of gross domestic product (GDP). The period 2002-2005 saw a dramatic reversal of the historic relationship between energy use and GDP growth: energy use per unit of GDP increased an average of 3.8% per year during this period (NBS, various years). China's 11th Five Year Plan (FYP), which covers the period 2006-2010, required all government divisions at different levels to reduce energy… more
Date: April 28, 2010
Creator: Levine, Mark D.; Price, Lynn; Zhou, Nan; Fridley, David; Aden, Nathaniel; Lu, Hongyou et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Status Summary of 3He and Neutron Detection Alternatives for Homeland Security

Description: This is a short summary whitepaper on results of our alternatives work: Neutron detection is an important aspect of interdiction of radiological threats for homeland security purposes since plutonium, a material used for nuclear weapons, is a significant source of fission neutrons [Kouzes 2005]. Because of the imminent shortage of 3He, which is used in the most commonly deployed neutron detectors, a replacement technology for neutron detection is required for most detection systems in the very … more
Date: April 28, 2010
Creator: Kouzes, Richard T. & Ely, James H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Novel Approaches to Wide Bandgap CuInSe2 Based Absorbers

Description: This project targeted the development of high performance wide bandgap solar cells based on thin film alloys of CuInSe2 to relax constraints on module design and enable tandem solar cell structures. This addressed goals of the Solar Energy Technologies Program for Next Generation PV to develop technology needed for higher thin film module efficiency as a means to reduce costs. Specific objectives of the research project were: 1) to develop the processes and materials required to improve the per… more
Date: April 28, 2011
Creator: Shafarman, William N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Semiconductor Nanowires: What's Next?

Description: In this perspective, we take a critical look at the research progress within the nanowire community for the past decade. We discuss issues on the discovery of fundamentally new phenomena versus performance benchmarking for many of the nanowire applications. We also notice that both the bottom-up and top-down approaches have played important roles in advancing our fundamental understanding of this new class of nanostructures. Finally we attempt to look into the future and offer our personal opin… more
Date: April 28, 2010
Creator: Yang, Peidong; Yan, Ruoxue & Fardy, Melissa
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hedberg Research Conference on Fundamental Controls on Flow in Carbonates: Request for Travel Support for Post-Doctoral Fellows

Description: Carbonate reservoirs pose a scientific and engineering challenge to geophysical prediction and monitoring of fluid flow in the subsurface. Difficulties in interpreting hydrological, reservoir and other exploration data arise because carbonates are composed of a hierarchy of geological structures, constituents and processes that span a wide spectrum of length and time scales. What makes this problem particularly challenging is that length scales associated with physical structure and processes a… more
Date: April 28, 2013
Creator: Pyrak-Nolte, Laura J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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