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256 Matching Results
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From self-organized to extended criticality
Article discussing the criticality of transition processes in neurophysiology.
Date:
April 26, 2012
Creator:
Lovecchio, Elisa; Allegrini, Paolo; Geneston, Elvis L.; West, Bruce J. & Grigolini, Paolo
System:
The UNT Digital Library
Solubility of Acetaminophen and Ibuprofen in the Mixtures of Polyethylene Glycol 200 or 400 with Ethanol and water and the Density of Solute-Free Mixed Solvents at 298.2 K
Article on the solubility of acetaminophen and ibuprofen in the mixtures of polyethylene glycol 200 or 400 with ethanol and water and the density of solute-free mixed solvents at 298.2 K.
Date:
October 26, 2010
Creator:
Jouyban, Abolghasem; Soltanpour, Shahla & Acree, William E. (William Eugene)
System:
The UNT Digital Library
Cooperativity Between Low-Valent Iron and Potassium Promoters in Dinitrogen Fixation
Article discussing the cooperativity between low-valent iron and potassium promoters in dinitrogen fixation.
Date:
June 26, 2012
Creator:
Figg, Travis M.; Holland, Patrick L. & Cundari, Thomas R., 1964-
System:
The UNT Digital Library
Semi-supervised prediction of protein subcellular localization using abstraction augmented Markov models
Article discussing the semi-supervised prediction of protein subcellular localization using abstraction augmented Markov models.
Date:
October 26, 2010
Creator:
Caragea, Cornelia; Caragea, Doina; Silvescu, Adrian & Honavar, Vasant
System:
The UNT Digital Library
Potential role of signal transducer and activator of transcription (STAT)3 signaling pathway in inflammation, survival, proliferation and invasion of hepatocellular carcinoma
Article on the potential role of signal transducer and activator of transcription (STAT)3 signaling pathway in inflammation, survival, proliferation and invasion of hepatocellular carcinoma.
Date:
October 26, 2012
Creator:
Subramaniam, Aruljothi; Shanmugam, Muthu K.; Perumal, Ekambaram; Li, Feng; Nachiyappan, Alamelu; Dai, Xiaoyun et al.
System:
The UNT Digital Library
Garcinol, a Polyisoprenylated Benzophenone Modulates Multiple Proinflammatory Signaling Cascades Leading to the Suppression of Growth and Survival of Head and Neck Carcinoma
Article on the constitutive activation of proinflammatory transcription factors such as STAT3 and NF-KB that play a pivotal role in the proliferation and survival of squamous cell carcinoma of the head and neck (HNSCC).
Date:
June 26, 2013
Creator:
Li, Feng; Shanmugam, Muthu K.; Chen, Luxi; Chatterjee, Snehajyoti; Basha, Jeelan; Kumar, Alan Prem et al.
System:
The UNT Digital Library
Enhanced seed production under prolonged heat stress conditions in Arabidopsis thaliana plants deficient in cytosolic ascorbate peroxidase 2
Article discussing enhanced seed production under prolonged heat stress conditions in Arabidopsis thaliana plants deficient in cytosolic ascorbate peroxidase 2.
Date:
November 26, 2012
Creator:
Suzuki, Nobuhiro; Miller, Gad; Sejima, Hiroe; Harper, Jeffrey F. & Mittler, Ron
System:
The UNT Digital Library
Solubility of Tris(hydroxymethyl)aminomethane in Methanol + 1-Propanol Mixtures at Various Temperatures
Article on the solubility of tris(hydroxymethyl)aminomethane in methanol + 1-propanol mixtures at various temperatures.
Date:
November 26, 2014
Creator:
Jouyban-Gharamaleki, Vahid; Jouyban-Gharamaleki, Karim; Soleymani, Jafar; Kenndler, Ernst; Acree, William E. (William Eugene) & Jouyban, Abolghasem
System:
The UNT Digital Library
Who Cares If Rhetoricians Landed on the Moon? Or, a Plea for Reviving the Politics of Historiography
This article discusses a plea for reviving the politics of historiography.
Date:
March 26, 2015
Creator:
Skinnell, Ryan
System:
The UNT Digital Library
Event-by-event study of photon observables in spontaneous and thermal fission
None
Date:
September 26, 2012
Creator:
Vogt, R & Randrup, J
System:
The UNT Digital Library
Performance Characteristics of Hardware Transactional Memory for Molecular Dynamics Application on BlueGene/Q: Toward Efficient Multithreading Strategies for Large-Scale Scientific Applications
None
Date:
September 26, 2012
Creator:
Kunaseth, M.; Kalia, R. K.; Nakano, A.; Vashishta, P.; Richards, D. F. & Glosli, J. N.
System:
The UNT Digital Library
High efficiency multilayer blazed gratings for EUV and soft X-rays: Recent developments
Multilayer coated blazed gratings with high groove density are the best candidates for use in high resolution EUV and soft x-ray spectroscopy. Theoretical analysis shows that such a grating can be potentially optimized for high dispersion and spectral resolution in a desired high diffraction order without significant loss of diffraction efficiency. In order to realize this potential, the grating fabrication process should provide a perfect triangular groove profile and an extremely smooth surface of the blazed facets. Here we report on recent progress achieved at the Advanced Light Source (ALS) in fabrication of high quality multilayer coated blazed gratings. The blazed gratings were fabricated using scanning beam interference lithography followed by wet anisotropic etching of silicon. A 200 nm period grating coated with a Mo/Si multilayer composed with 30 bi-layers demonstrated an absolute efficiency of 37.6percent in the 3rd diffraction order at 13.6 nm wavelength. The groove profile of the grating was thoroughly characterized with atomic force microscopy before and after the multilayer deposition. The obtained metrology data were used for simulation of the grating efficiency with the vector electromagnetic PCGrate-6.1 code. The simulations showed that smoothing of the grating profile during the multilayer deposition is the main reason for …
Date:
July 26, 2011
Creator:
Voronov, Dmitriy; Ahn, Minseung; Anderson, Erik; Cambie, Rossana; Chang, Chih-Hao; Goray, Leonid et al.
System:
The UNT Digital Library
Gamma discrimination in pillar structured thermal neutron detectors
Solid-state thermal neutron detectors are desired to replace {sup 3}He tube based technology for the detection of special nuclear materials. {sup 3}He tubes have some issues with stability, sensitivity to microphonics and very recently, a shortage of {sup 3}He. There are numerous solid-state approaches being investigated that utilize various architectures and material combinations. By using the combination of high-aspect-ratio silicon PIN pillars, which are 2 {micro}m wide with a 2 {micro}m separation, arranged in a square matrix, and surrounded by {sup 10}B, the neutron converter material, a high efficiency thermal neutron detector is possible. Besides intrinsic neutron detection efficiency, neutron to gamma discrimination is an important figure of merit for unambiguous signal identification. In this work, theoretical calculations and experimental measurements are conducted to determine the effect of structure design of pillar structured thermal neutron detectors including: intrinsic layer thickness, pillar height, substrate doping and incident gamma energy on neutron to gamma discrimination.
Date:
March 26, 2012
Creator:
Shao, Q.; Radev, R. P.; Conway, A. M.; Voss, L. F.; Wang, T. F.; Nikolic, R. J. et al.
System:
The UNT Digital Library
Measurement of the Cosmic Ray Energy Spectrum Using Hybrid Events of the Pierre Auger Observatory
None
Date:
June 26, 2012
Creator:
Settimo, Mariangela & U., /Siegen u. /Salento
System:
The UNT Digital Library
Operational Experience with Optical Streak Cameras used on the National Ignition Facility
None
Date:
August 26, 2013
Creator:
Datte, P.; Bond, E.; Celliers, P.; Hibbard, R.; Kalantar, D.; Krauter, K. et al.
System:
The UNT Digital Library
Characterizing surplus US plutonium for disposition
The United States (US) has identified 61.5 metric tons (MT) of plutonium that is permanently excess to use in nuclear weapons programs, including 47.2 MT of weapons-grade plutonium. Surplus inventories will be stored safely by the Department of Energy (DOE) and then transferred to facilities that will prepare the plutonium for permanent disposition. The Savannah River National Laboratory (SRNL) operates a Feed Characterization program for the Office of Fissile Materials Disposition (OFMD) of the National Nuclear Security Administration (NNSA) and the DOE Office of Environmental Management (DOE-EM). SRNL manages a broad program of item tracking through process history, laboratory analysis, and non-destructive assay. A combination of analytical techniques allows SRNL to predict the isotopic and chemical properties that qualify materials for disposition through the Mixed Oxide (MOX) Fuel Fabrication Facility (MFFF). The research also defines properties that are important for other disposition paths, including disposal to the Waste Isolation Pilot Plant (WIPP) as transuranic waste (TRUW) or to high-level waste (HLW) systems.
Date:
February 26, 2013
Creator:
Allender, Jeffrey S. & Moore, Edwin N.
System:
The UNT Digital Library
Forward Drell-Yan plus backward jet as a test of BFKL evolution
N/A
Date:
March 26, 2012
Creator:
M., Hentschinski & Salas, C.
System:
The UNT Digital Library
Ultra-relativistic Heavy-ion Physics with AFTER@LHC
None
Date:
November 26, 2012
Creator:
Rakotozafindrabe, A.; Arnaldi, R.; Brodsky, S.J.; Chambert, V.; Didelez, J.P.; Genolini, B. et al.
System:
The UNT Digital Library
Helicity Parton Distributions at an EIC
N/A
Date:
March 26, 2012
Creator:
C., Aschenauer E.; Sassot, R. & Stratmann, M.
System:
The UNT Digital Library
X-ray Diffraction Diagnostic Design for the National Ignition Facility
None
Date:
July 26, 2013
Creator:
Ahmed, M; House, A; Smith, R F; Lamb, Z & Swift, D W
System:
The UNT Digital Library
Conformal Symmetry, Color Confinement, and Light-Front Holographic QCD
None
Date:
February 26, 2013
Creator:
Brodsky, Stanley J.; de Teramond, Guy F. & Dosch, Hans Gunter
System:
The UNT Digital Library
Statistical Performance Evaluation Of Soft Seat Pressure Relief Valves
Risk-based inspection methods enable estimation of the probability of failure on demand for spring-operated pressure relief valves at the United States Department of Energy's Savannah River Site in Aiken, South Carolina. This paper presents a statistical performance evaluation of soft seat spring operated pressure relief valves. These pressure relief valves are typically smaller and of lower cost than hard seat (metal to metal) pressure relief valves and can provide substantial cost savings in fluid service applications (air, gas, liquid, and steam) providing that probability of failure on demand (the probability that the pressure relief valve fails to perform its intended safety function during a potentially dangerous over pressurization) is at least as good as that for hard seat valves. The research in this paper shows that the proportion of soft seat spring operated pressure relief valves failing is the same or less than that of hard seat valves, and that for failed valves, soft seat valves typically have failure ratios of proof test pressure to set pressure less than that of hard seat valves.
Date:
March 26, 2013
Creator:
Harris, Stephen P. & Gross, Robert E.
System:
The UNT Digital Library
Massive-scale RDF Processing Using Compressed Bitmap Indexes
The Resource Description Framework (RDF) is a popular data model for representing linked data sets arising from the web, as well as large scienti#12;c data repositories such as UniProt. RDF data intrinsically represents a labeled and directed multi-graph. SPARQL is a query language for RDF that expresses subgraph pattern-#12;nding queries on this implicit multigraph in a SQL- like syntax. SPARQL queries generate complex intermediate join queries; to compute these joins e#14;ciently, we propose a new strategy based on bitmap indexes. We store the RDF data in column-oriented structures as compressed bitmaps along with two dictionaries. This paper makes three new contributions. (i) We present an e#14;cient parallel strategy for parsing the raw RDF data, building dictionaries of unique entities, and creating compressed bitmap indexes of the data. (ii) We utilize the constructed bitmap indexes to e#14;ciently answer SPARQL queries, simplifying the join evaluations. (iii) To quantify the performance impact of using bitmap indexes, we compare our approach to the state-of-the-art triple-store RDF-3X. We #12;nd that our bitmap index-based approach to answering queries is up to an order of magnitude faster for a variety of SPARQL queries, on gigascale RDF data sets.
Date:
May 26, 2011
Creator:
Madduri, Kamesh & Wu, Kesheng
System:
The UNT Digital Library
Workshop on Fukushima Data Compilation (U)
None
Date:
March 26, 2012
Creator:
Wimer, N G
System:
The UNT Digital Library