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Erratum: First-Principles Theory of Correlated Transport through Nanojunctions [Phys. Rev. Lett. 94, 116802 (2005)] (open access)

Erratum: First-Principles Theory of Correlated Transport through Nanojunctions [Phys. Rev. Lett. 94, 116802 (2005)]

This article provides the correction of an equation that was misprinted in Physical Review Letters 94, 116802 (2005).
Date: May 6, 2005
Creator: Ferretti, A.; Calzolari, Arrigo; Di Felice, Rosa; Manghi, Franca; Caldas, Marilia J.; Buongiorno Nardelli, Marco et al.
Object Type: Article
System: The UNT Digital Library
Theoretical STM signatures and transport properties of native defects in carbon nanotubes (open access)

Theoretical STM signatures and transport properties of native defects in carbon nanotubes

Article on theoretical STM signatures and transport properties of native defects in carbon nanotubes.
Date: May 15, 2000
Creator: Orlikowski, Daniel; Buongiorno Nardelli, Marco; Bernholc, Jerry & Roland, Christopher
Object Type: Article
System: The UNT Digital Library
Photoconductivity Investigation of Two-Photon Magneto-Absorption, PACRH, and Deep Levels in n-InSb (open access)

Photoconductivity Investigation of Two-Photon Magneto-Absorption, PACRH, and Deep Levels in n-InSb

A high resolution photoconductivity investigation of two 13 -3 photon magneto-absorption (TPMA) in n-InSb (n - 9 x 10 cm ) has been performed. This is the first time that two-photon absorption in a semiconductor has been studied with cw lasers only. With a stable cw CC>2 laser and a highly sensitive sampling and magnetic field modulation technique, a minimum of 4 2 transitions in the TPMA photoconductivity spectra can be observed. Most of these transitions are a result of the usual spherical approximation TPMA selections rules (An =0, ±2; As = 0 for e ⊥ B and Δn = 0; Δs = 0 for e || B) . However, some transitions, in particular several near the TPMA band edge, are not explained by these rules. The TPMA spectra have been found to depend upon crystallographic orientation. This has not been previously observed. The temperature variation of the fundamental energy gap Eg between 2 and 100° K is also obtained from TPMA experiments.
Date: May 1982
Creator: Goodwin, Mike Watson
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Low-Velocity K-Shell Ionization Cross Sections for Protons, Deuterons and Alpha Particles Bombarding Thin Metal Targets (open access)

Low-Velocity K-Shell Ionization Cross Sections for Protons, Deuterons and Alpha Particles Bombarding Thin Metal Targets

The purpose of this work was to examine the effect of the use the assumption κω2K/ΕCM «1 in calculating K-shell ionization cross sections in the plane wave Born approximation (PWBA) where κω2K is the observed binding energy of the K-shell and ECM is the energy of the incident particle in the center of mass system. Avoiding this assumption produces a threshold for ionization at Ecm = κω2K. Calculations employing the assumption, which leads to the use of approximate limits of integration, do not go to zero for even the .Lowest values of the incident energy.
Date: May 1981
Creator: Rice, Roger Karl
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Transmission of Information Between Complex Systems: 1/ f resonance (open access)

Transmission of Information Between Complex Systems: 1/ f resonance

In this article, the authors study the transport of information between two complex systems with similar properties.
Date: May 31, 2011
Creator: Aquino, Gerardo; Bologna, Mauro; West, Bruce J. & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Weak Emission-Line Quasars in the Context of a Modified Baldwin Effect (open access)

Weak Emission-Line Quasars in the Context of a Modified Baldwin Effect

This article tests whether the modified Baldwin effect remains strong across the wides possible of ranges of redshift and luminosity.
Date: May 28, 2015
Creator: Shemmer, Ohad
Object Type: Article
System: The UNT Digital Library
Fluctuation-Dissipation Process Without a Time Scale (open access)

Fluctuation-Dissipation Process Without a Time Scale

Article discussing the fluctuation-dissipation process without a time scale.
Date: May 2000
Creator: Annunziato, Mario; Grigolini, Paolo & Riccardi, Juri
Object Type: Article
System: The UNT Digital Library
Comparative Trace Elemental Analysis in Cancerous and Noncancerous Human Tissues Using PIXE (open access)

Comparative Trace Elemental Analysis in Cancerous and Noncancerous Human Tissues Using PIXE

Article discussing comparative trace elemental analysis in cancerous and noncancerous human tissues using PIXE.
Date: May 16, 2013
Creator: Mulware, Stephen Juma
Object Type: Article
System: The UNT Digital Library
Comparative Trace Elemental Analysis in Cancerous and Noncancerous Human Tissues Using PIXE (open access)

Comparative Trace Elemental Analysis in Cancerous and Noncancerous Human Tissues Using PIXE

This article reviews comparative trace elemental concentrations of cancerous and noncancerous tissues using PIXE.
Date: May 16, 2013
Creator: Mulware, Stephen Juma
Object Type: Article
System: The UNT Digital Library
On the period of VY Ursae Majoris (open access)

On the period of VY Ursae Majoris

This article contains visual observation data of the carbon star VY Ursae Majoris.
Date: May 25, 1994
Creator: Ofek, Efran; Shemmer, Ohad & Gabzo, Ofer
Object Type: Article
System: The UNT Digital Library
Formation and characterization of embedded Fe3Si binary structures in Si (open access)

Formation and characterization of embedded Fe3Si binary structures in Si

Article studying chemical and electronic properties of ion beam synthesized Fe-Si binary structures using X-ray photoelectron spectroscopy binding energy analysis.
Date: May 16, 2019
Creator: Lakshantha, Wickramaarachchige J.; McDaniel, Floyd Del. (Floyd Delbert), 1942- & Rout, Bibhudutta
Object Type: Article
System: The UNT Digital Library
The observation of silicon nanocrystals in siloxene (open access)

The observation of silicon nanocrystals in siloxene

This article discusses the observation of silicon nanocrystals in siloxene using high resolution transmission electron microscopy.
Date: May 1, 1994
Creator: Pinizzotto, Russell F.; Yang, H.; Pérez, José M. & Coffer, J. L.
Object Type: Article
System: The UNT Digital Library
Electrostatic equilibria of non-neutral plasmas confined in a Penning trap with axially varying magnetic field (open access)

Electrostatic equilibria of non-neutral plasmas confined in a Penning trap with axially varying magnetic field

This article describes a procedure for computing the electrostatic equilibria of non-neutral plasmas in a Penning trap with a nonuniform magnetic field by solving Poisson's equation using an iterative method. Plasma equilibria in a model Penning trap with high and low field regions are computed. The plasma is assumed to follow the Boltzmann density distribution along magnetic field lines.
Date: May 21, 2019
Creator: Lane, Ryan A. & Ordonez, Carlos A.
Object Type: Article
System: The UNT Digital Library
ALMA Observations of Quasar Host Galaxies at z ≃ 4.8 (open access)

ALMA Observations of Quasar Host Galaxies at z ≃ 4.8

Article presents ALMA Band 7 data of the [C ıı] 𝜆157.74 𝜇m emission line and underlying far-IR (FIR) continuum for 12 luminous quasars at 𝓏 ≃ 4.8 powered by fast-growing supermassive black holes (SMBHs).
Date: May 27, 2020
Creator: Shemmer, Ohad; Nguyen, Nathen H.; Lira, Paulina; Trakhtenbrot, Benny; Netzer, Hagai; Cicone, Claudia et al.
Object Type: Article
System: The UNT Digital Library
Carbon K-shell x-ray and Auger-electron production in hydrocarbons and carbon oxides by 0.6-2.0-MeV protons (open access)

Carbon K-shell x-ray and Auger-electron production in hydrocarbons and carbon oxides by 0.6-2.0-MeV protons

Article discussing research on carbon K-shell x-ray and Auger-electron production in hydrocarbons and carbon oxides by 0.6-2.0-MeV protons.
Date: May 1, 1987
Creator: Bhalla, R. P.; McDaniel, Floyd Del. (Floyd Delbert), 1942- & Lapicki, Gregory
Object Type: Article
System: The UNT Digital Library
Discovery of the first heavily obscured QSO candidate at z > 6 in a close galaxy pair (open access)

Discovery of the first heavily obscured QSO candidate at z > 6 in a close galaxy pair

This article reports the Chandra discovery of the first heavily obscured QSO candidate in the early universe, hosted by a close (≈5 kpc) galaxy pair at z = 6.515.
Date: May 17, 2022
Creator: Vito, F.; Brandt, William Nielsen; Bauer, Franz E.; Gilli, Roberto; Luo, B.; Zamorani, G. et al.
Object Type: Article
System: The UNT Digital Library
Deep Minima in the Triply Differential Cross Section for Ionization of Atomic Hydrogen by Electron and Positron Impact (open access)

Deep Minima in the Triply Differential Cross Section for Ionization of Atomic Hydrogen by Electron and Positron Impact

Article investigating ionization of atomic hydrogen by electron- and positron-impact. This article belongs to the Special Issue: Interactions of Positrons with Matter and Radiation.
Date: May 29, 2020
Creator: DeMars, C. M.; Ward, S. J.; Colgan, J.; Amami, S. & Madison, D. H.
Object Type: Article
System: The UNT Digital Library

Chandra and Magellan/FIRE follow-up observations of PSO167–13: An X-ray weak QSO at z = 6.515

This article presents the results of follow-up observations of the z = 6.515 radio-quiet QSO PSO167–13, which is interacting with a close companion galaxy with the goal to confirm the existence of the X-ray source and to investigate the rest-frame UV properties of the QSO. The authors observed the PSO167–13 system with Chandra/ACIS-S (177 ks) and obtained new spectroscopic observations (7.2 h) with Magellan/FIRE.
Date: May 27, 2021
Creator: Vito, F.; Brandt, William Nielsen; Ricci, F.; Congui, E.; Connor, T.; Bañados, E. et al.
Object Type: Article
System: The UNT Digital Library
Temporal complexity measure of reaction time series: Operational versus event time (open access)

Temporal complexity measure of reaction time series: Operational versus event time

Article describes how detrended fluctuation analysis (DFA) is a well-established method to evaluate scaling indices of time series, which categorize the dynamics of complex systems. The authors propose treating each reaction time as a duration time that changes the representation from operational (trial number) time n to event (temporal) time t, or X(t).
Date: May 23, 2023
Creator: Mahmoodi, Korosh; Kerick, Scott E.; Grigolini, Paolo; Franaszczuk, Pitor J. & West, Bruce J.
Object Type: Article
System: The UNT Digital Library
Meditation-Induced Coherence and Crucial Events (open access)

Meditation-Induced Coherence and Crucial Events

This article emphasizes that 1/f noise has two different origins, one compatible with Laplace determinism and one determined by unpredictable crucial events.
Date: May 29, 2018
Creator: Tuladhar, Rohisha; Bohara, Gyanendra; Grigolini, Paolo & West, Bruce J.
Object Type: Article
System: The UNT Digital Library
Collision-Induced Interaction Cross Sections of 1-7 Mev B₂ Ions Incident on an N₂ Gas Target (open access)

Collision-Induced Interaction Cross Sections of 1-7 Mev B₂ Ions Incident on an N₂ Gas Target

This article describes the measurement of collision-induced interaction cross sections for 1-7 MeV diatomic boron molecular ions incident on a nitrogen gas target by using a differentially pumped gas cell.
Date: May 5, 1995
Creator: Kim, Y. D.; Jin, J. Y.; Matteson, Samuel E.; Weathers, Duncan L.; Anthony, J. M.; Marshall, Paul et al.
Object Type: Article
System: The UNT Digital Library
The Chandra Deep Field-South Survey: 4 Ms Source Catalogs (open access)

The Chandra Deep Field-South Survey: 4 Ms Source Catalogs

This article presents source catalogs for the 4 Ms Chandra Deep Field-South.
Date: May 24, 2011
Creator: Xue, Yongquan; Luo, Bin; Brandt, William Nielsen; Bauer, Franz E.; Lehmer, Bret; Broos, Patrick et al.
Object Type: Article
System: The UNT Digital Library
Complex optical-X-ray correlations in the narrow-line Seyfert 1 galaxy NGC 4051 (open access)

Complex optical-X-ray correlations in the narrow-line Seyfert 1 galaxy NGC 4051

This article presents the results of a dense and intensive X-ray and optical monitoring of the narrow-line Seyfert 1 galaxy NGC 4051 carried out in 2000.
Date: May 6, 2003
Creator: Shemmer, Ohad; Uttley, P.; Netzer, Hagai & McHardy, I.M.
Object Type: Article
System: The UNT Digital Library
The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei (open access)

The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei

This article contains a detailed investigation of moderate- to high-quality X-ray spectra of 10 of the most luminous active galactic nuclei known at z > 4.
Date: May 20, 2005
Creator: Shemmer, Ohad; Brandt, William Nielsen; Vignali, Christian; Schneider, Donald P.; Fan, Xiaohui; Richards, Gordon T. et al.
Object Type: Article
System: The UNT Digital Library