43 Matching Results

Search Results

Advanced search parameters have been applied.

Body shape differences in a pair of closely related Malawi cichlids and their hybrids: Effects of genetic variation, phenotypic plasticity, and transgressive segregation

Description: This article investigates the contributions of genetic and plastic components for differences in body shape in two species of Lake Malawi cichlids using wild-caught specimens and a common garden experiment.
Date: January 28, 2017
Creator: Husemann, Martin; Tobler, Michael; McCauley, Cagney; Ding, Baoqing & Danley, Patrick D.
Partner: UNT College of Arts and Sciences

Conservation Laws for Coupled Hydro-mechanical Processes in Unsaturated Porous Media: Theory and Implementation

Description: We develop conservation laws for coupled hydro-mechanical processes in unsaturated porous media using three-phase continuum mixture theory. From the first law of thermodynamics, we identify energy-conjugate variables for constitutive modeling at macroscopic scale. Energy conjugate expressions identified relate a certain measure of effective stress to the deformation of the solid matrix, the degree of saturation to the matrix suction, the pressure in each constituent phase to the corresponding intrinsic volume change of this phase, and the seepage forces to the corresponding pressure gradients. We then develop strong and weak forms of boundary-value problems relevant for 3D finite element modeling of coupled hydro-mechanical processes in unsaturated porous media. The paper highlights a 3D numerical example illustrating the advances in the solution of large-scale coupled finite element systems, as well as the challenges in developing more predictive tools satisfying the basic conservation laws and the observed constitutive responses for unsaturated porous materials.
Date: February 19, 2010
Creator: Borja, R I & White, J A
Partner: UNT Libraries Government Documents Department

Corrosion Performance of Ferritic Steel for SOFC Interconnect Applications

Description: Ferritic stainless steels have been identified as potential candidates for interconnects in planar-type solid oxide fuel cells (SOFC) operating below 800ºC. Crofer 22 APU was selected for this study. It was studied under simulated SOFC-interconnect dual environment conditions with humidified air on one side of the sample and humidified hydrogen on the other side at 750ºC. The surfaces of the oxidized samples were studied by scanning electron microscopy (SEM) equipped with microanalytical capabilities. X-ray diffraction (XRD) analysis was also used in this study.
Date: November 1, 2006
Creator: Ziomek-Moroz, M.; Holcomb, G.R.; Covino, B.S., Jr.; Bullard, S.J.; Jablonski, P.D. & Alman, D.E.
Partner: UNT Libraries Government Documents Department

Environmental vibrios represent a source of antagonistic compounds that inhibit pathogenic Vibrio cholerae and Vibrio parahaemolyticus strains

Description: This article predicts that marine-derived bacteria should inhibit Vibrio pathogens and may be a source of unique antibiotic compounds.
Date: March 10, 2017
Creator: Burks, David J.; Norris, Stephen; Kauffman, Kathryn M.; Joy, Abigail; Arevalo, Philip; Azad, Rajeev K. et al.
Partner: UNT College of Arts and Sciences

Field-grown transgenic switchgras (Panicum virgatum L.) with altered lignin does not affect soil chemistry, microbiology, and carbon storage potential

Description: This article describes a study to evaluate effects of two independent lines of caffeic acid O-methyltransferase (COMT) downregulated switchgrass plants on soils in terms of chemistry, microbiolgy, and carbon cycling when grown in the field.
Date: September 22, 2016
Creator: DeBruyn, Jennifer M.; Bevard, David A.; Essington, Michael E.; McKnight, Julie Y.; Schaeffer, Sean M.; Baxter, Holly L. et al.
Partner: UNT College of Arts and Sciences

Mouse fat storage-inducing transmembrance protein 2 (FIT2) promotes lipid droplet accumulation in plants

Description: This article discusses the test of the function of FIT2 in plant cells by ectopically expressing mouse (Mus musculus) FIT2 in Nicotiana tabacum suspension-cultured cells, Nicotiana benthamiana leaves and Arabidopsis thaliana plants.
Date: December 2, 2016
Creator: Cai, Yingqi; McClinchie, Elizabeth; Price, Ann; Nguyen, Thuy N.; Gidda, Satinder K.; Watt, Samantha C. et al.
Partner: UNT College of Arts and Sciences

Multi-site genetic modification of monolignol biosynthesis in alfalfa (Medicago sativa): effects on lignin composition in specific cell types

Description: Article on multi-site genetic modification of monolignol biosynthesis in alfalfa (Medicago sativa) and the effects on lignin composition in specific cell types.
Date: March 2, 2008
Creator: Nakashima, Jin; Chen, Fang; Jackson, Lisa A.; Shadle, Gail L. & Dixon, R. A.
Partner: UNT College of Arts and Sciences