68 Matching Results

Search Results

Results: 1 - 24 next

Nancy Love and the Wasp Ferry Pilots of World War II

Description: She flew the swift P-51 and the capricious P-38, but the heavy, four-engine B-17 bomber and C-54 transport were her forte. This is the story of Nancy Harkness Love who, early in World War II, recruited and led the first group of twenty-eight women to fly military aircraft for the U.S. Army. Love was hooked on flight at an early age. At sixteen, after just four hours of instruction, she flew solo “a rather broken down Fleet biplane that my barnstorming instructor imported from parts unknown.” … more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: March 15, 2008
Creator: Rickman, Sarah Byrn
Item Type: Refine your search to only Book
Partner: UNT Press

Twentieth-century Texas: a Social and Cultural History

Description: Texas changed enormously in the twentieth century, and much of that transformation was a direct product of social and cultural events. Standard histories of Texas traditionally focus on political, military, and economic topics, with emphasis on the nineteenth century. In Twentieth-Century Texas: A Social and Cultural History editors John W. Storey and Mary L. Kelley offer a much-needed corrective. Written with both general and academic audiences in mind, the fourteen essays herein cover Indian… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: March 15, 2008
Creator: University of North Texas Press
Item Type: Refine your search to only Book
Partner: UNT Press
open access

Citric Acid-Modified Fenton's Reaction for the Oxidation of Chlorinated Ethylenes in Soil Solution Systems

Description: Fenton's reagent, a solution of hydrogen peroxide and ferrous iron catalyst, is used for an in-situ chemical oxidation of organic contaminants. Sulfuric acid is commonly used to create an acidic condition needed for catalytic oxidation. Fenton's reaction often involves pressure buildup and precipitation of reaction products, which can cause safety hazards and diminish efficiency. We selected citric acid, a food-grade substance, as an acidifying agent to evaluate its efficiencies for organic con… more
Date: March 15, 2008
Creator: Seol, Yongkoo & Javandel, Iraj
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Basalt weathering rates on Earth and the duration of liquid water on the plains of Gusev Crater, Mars

Description: Where Martian rocks have been exposed to liquid water, chemistry versus depth profiles could elucidate both Martian climate history and potential for life. The persistence of primary minerals in weathered profiles constrains the exposure time to liquid water: on Earth, mineral persistence times range from {approx}10 ka (olivine) to {approx}250 ka (glass) to {approx}1Ma (pyroxene) to {approx}5Ma (plagioclase). Such persistence times suggest mineral persistence minima on Mars. However, Martian so… more
Date: March 15, 2008
Creator: Steefel, Carl; Hausrath, E. M.; Navarre-Sitchler, A. K.; Sak, P. B.; Steefel, C. & Brantley, S. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Test of the consistency of various linearized semiclassical initial value time correlation functions in application to inelastic neutron scattering from liquid para-hydrogen

Description: The linearized approximation to the semiclassical initial value representation (LSC-IVR) is used to calculate time correlation functions relevant to the incoherent dynamic structure factor for inelastic neutron scattering from liquid para-hydrogen at 14 K. Various time correlations functions were used which, if evaluated exactly, would give identical results, but they do not because the LSC-IVR is approximate. Some of the correlation functions involve only linear operators, and others involve n… more
Date: March 15, 2008
Creator: Miller, William; Liu, Jian & Miller, William H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Temperature dependence of the interface moments in Co2MnSi thin films

Description: X-ray magnetic circular dichroism (XMCD) is utilized to explore the temperature dependence of the interface moments in Co{sub 2}MnSi (CMS) thin films capped with aluminium. By increasing the thickness of the capping layer we demonstrate enhanced interface sensitivity of the measurements and the existence of a thin Mn oxide layer at the CMS/Al interface even when a thick capping layer is used. We show that for well ordered L2{sub 1} CMS films there is no significant variation in either the Co or… more
Date: March 15, 2008
Creator: Arenholz, Elke; Telling, N.; Keatley, P.; Shelford, L.; Arenholz, E.; van der Laan, G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Exact Averaging of Stochastic Equations for Flow in Porous Media

Description: It is well known that at present, exact averaging of the equations for flow and transport in random porous media have been proposed for limited special fields. Moreover, approximate averaging methods--for example, the convergence behavior and the accuracy of truncated perturbation series--are not well studied, and in addition, calculation of high-order perturbations is very complicated. These problems have for a long time stimulated attempts to find the answer to the question: Are there in exis… more
Date: March 15, 2008
Creator: Karasaki, Kenzi; Shvidler, Mark & Karasaki, Kenzi
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Porous ceramic scaffolds with complex architectures

Description: This work compares two novel techniques for the fabrication of ceramic scaffolds for bone tissue engineering with complex porosity: robocasting and freeze casting. Both techniques are based on the preparation of concentrated ceramic suspensions with suitable properties for the process. In robocasting, the computer-guided deposition of the suspensions is used to build porous materials with designed three dimensional (3-D) geometries and microstructures. Freeze casting uses ice crystals as a temp… more
Date: March 15, 2008
Creator: Saiz, Eduardo; Munch, Etienne; Franco, Jaime; Deville, Sylvain; Hunger, Phillip; Saiz, Eduardo et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen