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22 Matching Results
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22
An Insect Herbivore Microbiome with High Plant Biomass-Degrading Capacity
Herbivores can gain indirect access to recalcitrant carbon present in plant cell walls through symbiotic associations with lignocellulolytic microbes. A paradigmatic example is the leaf-cutter ant (Tribe: Attini), which uses fresh leaves to cultivate a fungus for food in specialized gardens. Using a combination of sugar composition analyses, metagenomics, and whole-genome sequencing, we reveal that the fungus garden microbiome of leaf-cutter ants is composed of a diverse community of bacteria with high plant biomass-degrading capacity. Comparison of this microbiome?s predicted carbohydrate-degrading enzyme profile with other metagenomes shows closest similarity to the bovine rumen, indicating evolutionary convergence of plant biomass degrading potential between two important herbivorous animals. Genomic and physiological characterization of two dominant bacteria in the fungus garden microbiome provides evidence of their capacity to degrade cellulose. Given the recent interest in cellulosic biofuels, understanding how large-scale and rapid plant biomass degradation occurs in a highly evolved insect herbivore is of particular relevance for bioenergy.
Date:
September 23, 2010
Creator:
Suen, Garret; Barry, Kerrie; Goodwin, Lynne; Scott, Jarrod; Aylward, Frank; Adams, Sandra et al.
System:
The UNT Digital Library
Liquid-Water Uptake and Removal in PEM Fuel-Cell Components
Management of liquid water is critical for optimal fuel-cell operation, especially at low temperatures. It is therefore important to understand the wetting properties and water holdup of the various fuel-cell layers. While the gas-diffusion layer is relatively hydrophobic and exhibits a strong intermediate wettability, the catalyst layer is predominantly hydrophilic. In addition, the water content of the ionomer in the catalyst layer is lower than that of the bulk membrane, and is affected by platinum surfaces. Liquid-water removal occurs through droplets on the surface of the gas-diffusion layer. In order to predict droplet instability and detachment, a force balance is used. While the pressure or drag force on the droplet can be derived, the adhesion or surface-tension force requires measurement using a sliding-angle approach. It is shown that droplets produced by forcing water through the gas-diffusion layer rather than placing them on top of it show much stronger adhesion forces owing to the contact to the subsurface water.
Date:
September 23, 2011
Creator:
Das, Prodip K.; Gunterman, Haluna P.; Kwong, Anthony & Weber, Adam Z.
System:
The UNT Digital Library
Light-Front Holographic Quantum Chromodynamics
None
Date:
September 23, 2013
Creator:
Brodsky, Stanley J.; de Teramond, Guy F. & Dosch, Hans Gunter
System:
The UNT Digital Library
PTRANSP Tests of TGLF and Predictions for ITER
A new numerical solver for stiff transport predictions has been developed and implemented in the PTRANSP predictive transport code. The TGLF and GLF23 predictive codes have been incorporated in the solver, verified by comparisons with predictions from the XPTOR code, and validated by comparing predicted and measured profiles. Predictions for ITER baseline plasmas are presented.
Date:
September 23, 2012
Creator:
Budny, Robert V.; Yuan, Xingqiu; Jardin, S.; Hammett, G.; Staebler, G. & Kinsey, J.
System:
The UNT Digital Library
A parametric study of BCS RF surface impedance with magnetic field using the Xiao Code
N/A
Date:
September 23, 2013
Creator:
E., Reece C. & B., Xiao
System:
The UNT Digital Library
Corrosion Behavior of Selectively Laser Melted CoCrFeMnNi High Entropy Alloy
The article focuses on a study that widens the toolbox to manufacture HEAs with exceptional corrosion resistance by additive manufacturing. CoCrFeMnNi high entropy alloys (HEAs) were additively manufactured (AM) by laser powder bed fusion and their corrosion resistance in 3.5 wt% NaCl solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy tests. A systematic study of AM CoCrFeMnNi HEAs’ porosity under a wide range of laser processing parameters was conducted and a processing map was constructed to identify the optimal laser processing window for CoCrFeMnNi HEAs.
Date:
September 23, 2019
Creator:
Ren, Jie; Mahajan, Chaitanya; Liu, Liang; Follette, David; Chen, Wen & Mukherjee, Sundeep
System:
The UNT Digital Library
Attention-Based Dense Point Cloud Reconstruction From a Single Image
Article proposes a two-stage training dense point cloud generation network.
Date:
September 23, 2019
Creator:
Lu, Qiang; Xiao, Mingjie; Lu, Yiyang; Yuan, Xiaohui & Yu, Ye
System:
The UNT Digital Library
Fundamentals of three-dimensional Yb-fiber Nd:YAG laser machining of structural bone
This article presents a study that aims to understand the fundamental aspects of the laser-bone interaction in three-dimensional laser machining of the bone through an integrated experimental-computational approach.
Date:
June 28, 2019
Creator:
Dahotre, Narendra B.; Pantawane, Mangesh V.; Robertson, William B.; Khan, Riaz J. K. & Fick, Daniel P.
System:
The UNT Digital Library
Existence of Infinitely Many Solutions for Singular Semilinear Problems on Exterior Domains
Article proving the existence of infinitely many radial solutions of ∆𝓊+𝐾(𝓇) ƒ (𝓊) = 0 on the exterior of the ball of radius R > 0, BR, centered at the origin in ℝᴺ with u = 0 on ∂BR and lim/r→∞ 𝓊(𝓇) = 0 where N > 2, f is odd with f < 0 on (0, β), f > 0 on (β, ∞), f is superlinear for large u, ƒ(𝓊) ∼ −1/(|𝓊|𝘲⁻¹𝓊) with 0 < q < 1 for small u, and 0 < 𝐾(𝓇) ≤ 𝐾₁/r∝ with 𝑁 + q(𝑁 − 2) < ∝ < 2(𝑁− 1) for large r.
Date:
March 9, 2018
Creator:
Iaia, Joseph A.
System:
The UNT Digital Library
Superconducting test of the 56 MHz SRF quarter wave resonator for RHIC
N/A
Date:
September 23, 2013
Creator:
Wu, Q.; Belomestnykh, S.; Ben-Zvi, Ilan; McIntyre, G.; Porqueddu, R.; Seberg, S. et al.
System:
The UNT Digital Library
Compact Higher Order Mode Filter for Crab Cavities in the Large Hadron Collider
N/A
Date:
September 23, 2013
Creator:
Xiao, B. P.; Belomestnykh, S.; Ben-Zvi, Ilan; Calaga, R.; Skaritka, J.; Verdu-Andres, S. et al.
System:
The UNT Digital Library
A new first-principles calculation of field-dependent RF surface impedance of BCS superconductor
N/A
Date:
September 23, 2013
Creator:
B., Xiao & Reece, C.
System:
The UNT Digital Library
Melt Processed Single Phase Hollandite Waste Forms For Nuclear Waste Immobilization: Ba{sub 1.0}Cs{sub 0.3}A{sub 2.3}Ti{sub 5.7}O{sub 16}; A = Cr, Fe, Al
Cs is one of the more problematic fission product radionuclides to immobilize due to its high volatility at elevated temperatures, ability to form water soluble compounds, and its mobility in many host materials. The hollandite structure is a promising crystalline host for Cs immobilization and has been traditionally fabricated by solid state sintering methods. This study presents the structure and performance of Ba{sub 1.0}Cs{sub 0.3}A{sub 2.3}Ti{sub 5.7}O{sub 16}; A = Cr, Fe, Al hollandite fabricated by melt processing. Melt processing is considered advantageous given that melters are currently in use for High Level Waste (HLW) vitrification in several countries. This work details the impact of Cr additions that were demonstrated to i) promote the formation of a Cs containing hollandite phase and ii) maintain the stability of the hollandite phase in reducing conditions anticipated for multiphase waste form processing.
Date:
September 23, 2013
Creator:
Brinkman, Kyle; Marra, James; Amoroso, Jake; Conradson, Steven D. & Tang, Ming
System:
The UNT Digital Library
Design and vertical test of double quarter wave crab cavity for LHC luminosity upgrade
N/A
Date:
September 23, 2013
Creator:
P., Xiao B.; S., Belomestnykh; Ben-Zvi, Ilan; Calaga, R.; Cullen, C.; Hammons, L. et al.
System:
The UNT Digital Library
Characterization of superconducting samples with SIC system for thin film developments: status and recent results
N/A
Date:
September 23, 2013
Creator:
G., Eremeev; B., Xiao; Reece, C. & Valente-Feliciano, A.-M.
System:
The UNT Digital Library
Optimization of the Double Quarter Wave Crab Cavity prototype for testing at SPS
N/A
Date:
September 23, 2013
Creator:
Verdu-Andres, S.; Xiao, B.; Wu, Q.; Belomestnykh, S.; Ben-Zvi, Ilan; Calaga, R. et al.
System:
The UNT Digital Library
Measurement of CP-violating asymmetries in B^0 \to (rho-pi)^0 Decays using a Time-dependent Daltiz Plot Analysis
None
Date:
September 23, 2013
Creator:
Lees, J. P.; Poireau, V.; Tisserand, V.; /Annecy, LAPP; Grauges, E.; /Barcelona U., ECM et al.
System:
The UNT Digital Library
The Ultraviolet-To-Mid-Infrared Spectral Energy Distribution of Weak Emission Line Quasars
This article presents Spitzer Space Telescope photometry of 18 Sloan Digital Sky Survey quasars which have weak or undetectable high-ionization emission lines in their rest-frame ultraviolet spectra.
Date:
September 23, 2011
Creator:
Lane, Ryan A.; Shemmer, Ohad; Diamond-Stanic, Aleksandar M.; Fan, Xiaohui; Anderson, Scott F.; Brandt, William Nielsen et al.
System:
The UNT Digital Library
Dual-Wavelength Terahertz Metasurfaces with Independent Phase and Amplitude Control at Each Wavelength
This article describes the design of a dual-wavelength achromatic metasurface-based deflector deflecting the incident wave to the same direction at two selected wavelengths, which has circumvented the critical limitation of strong wavelength dependence in the planar metasurface-based devices caused by the resonant nature of the plasmonic structures.
Date:
September 23, 2016
Creator:
Ding, Jun; Xu, Ningning; Ren, Han; Lin, Yuankun; Zhang, Weili & Zhang, Hualiang
System:
The UNT Digital Library
Mechanical Properties of Chemically Modified Clay
Article uses first principles methods to compare the mechanical properties of lizardite Mg3(Si2O5)(OH)4, a polymorph of serpentine family, with the new compounds derived by substituting Mg ions with isovalent elements from different chemical groups.
Date:
September 23, 2019
Creator:
Gusmão, M. S.; Gopal, Priya; Siloi, Ilaria; Curtarolo, Stefano; Fornari, Marco & Buongiorno Nardelli, Marco
System:
The UNT Digital Library
ROS Are Good
This opinion article focuses on the possibility that ROS are beneficial to plants, supporting cellular proliferation, physiological function, and viability, and that maintaining a basal level of ROS in cells is essential for life.
Date:
September 23, 2016
Creator:
Mittler, Ron
System:
The UNT Digital Library
Matt Swinney grew Austin's fashion scene one Fashion X at a time
Article about Matt Swinney, founder of Fashion X, and the 10 year anniversary of Austin Fashion Week.
Date:
September 23, 2018
Creator:
Villalpando, Nicole
System:
The UNT Digital Library