UNT College of Arts and Sciences - 177 Matching Results

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Rediscovery of the Elements: Phosphorus

Description: Article describing the discovery of phosphorus in 1669 by an alchemist searching for the philosopher's stone, and its use a century later by Lavoisier to help usher in the era of modern chemistry. Tourist information regarding sites pertinent to this history are included.
Date: Spring 2013
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Item Type: Refine your search to only Article
open access

Saguaro Cactus and Joshua Trees

Description: Front cover of the spring 2013 issue of The Hexagon, which features an image of a saguaro cactus and joshua trees at a location in northwest Arizona along highway US 93. The inside cover contains a table of contents, a staff list, an editorial, and details about the cover photograph.
Date: Spring 2013
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Item Type: Refine your search to only Article
open access

Evolutionary implications of the distribution and variation of the skeletal muscles of the anuran lymphatic system

Description: This article defines character states and describes variation of these putative lymphatic skeletal muscles: the M. cutaneus pectoris, M. cutaneus dorsi, M. piriformis, M. sphincter ani cloacalis, and the complex of the M. gracilis minor/M. abdominal crenator.
Date: April 3, 2013
Creator: Drewes, Robert C.; Hillman, Stanley S.; Hedrick, Michael & Withers, Philip C.
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Comments Regarding "Density, Speed of Sound, Refractive Index and Derivatives Properties of the Binary Mixture N-Hexane + N-Heptane (or N-Octane or N-Nonane), T = 288.15 - 313.15 K"

Description: This article offers comment on "Density, speed of sound, refractive index and derivatives properties of the binary mixture N-Hexane + N-Heptane (or N-Octane or N-Nonane), T=288.15 - 313.15 K."
Date: April 9, 2013
Creator: Acree, William E. (William Eugene) & Stephens, Timothy W.
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Global Film History: Encouraging Students to Develop Arguments that Connect Different Industries and Time Periods

Description: Poster presented as part of the 2013 University Forum on Teaching & Learning at UNT. This poster discusses exploring the effectiveness of group-based blog assignments in large enrollment classes to help students learn about global film history across different industries and time periods.
Date: April 12, 2013
Creator: Larke-Walsh, George S., 1965-
Item Type: Refine your search to only Poster
open access

Experimental and Predicted Solubilities of 3,4-Dimethoxybenzoic Acid in Select Organic Solvents of Varying Polarity and Hydrogen-bonding Character

Description: This article discusses the experimental and predicted solubilities of 3,4-dimethoxybenzoic acid in select organic solvents of varying polarity and hydrogen-bonding character.
Date: April 17, 2013
Creator: Bowen, Kaci R.; Stephens, Timothy W.; Lu, Helen; Satish, Kalpana; Shan, Danyang; Acree, William E. (William Eugene) et al.
Item Type: Refine your search to only Article
open access

Accelerator-based fusion with a low temperature target

Description: This article reports a study of a cold target with a high Fermi energy in light of recent research that points to a new phase of hydrogen, which is hypothesized to be related to metallic hydrogen. It has been shown that if the energy transfer between injected ions and target electrons is sufficiently small, net energy gain can be achieved. As such, the target is considered to be composed of nuclei and delocalized electrons.
Date: April 19, 2013
Creator: Phillips, R. E. & Ordonez, Carlos A.
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open access

Dual levitated coils for antihydrogen production

Description: Article on theoretical and experimental efforts to use dual levitated coils to confine relatively large, cold, dense non-drifting recombining antihydrogen plasmas. The theoretical effort includes the development of a classical trajectory Monte Carlo simulation of confinement. The experimental effort includes levitation of a NdFeB permanent ring magnet, which produces a magnetic field that is qualitatively similar to the field that would be produced by the two coaxial superconducting magnetic co… more
Date: April 19, 2013
Creator: Wofford, Joshua D. & Ordonez, Carlos A.
Item Type: Refine your search to only Article
open access

Electrostatic storage ring with focusing provided by the space charge of an electron plasma

Description: Article describes an electronic storage ring that employs the space charge of an electron plasma for focusing. An advantage of the present concept is that slow ions, or even a stationary ion plasma, can be confined. The concept employs an artificially structured boundary, which is defined at present as one that produces a spatially periodic static field such that the spatial period and range of the field are much smaller than the dimensions of a plasma or charged-particle beam that is confined … more
Date: April 19, 2013
Creator: Pacheco, J. L.; Ordonez, Carlos A. & Weathers, Duncan L.
Item Type: Refine your search to only Article
open access

Reduced Heart Rate and Cardiac Output Differentially Affect Angiogenesis, Growth, and Development in Early Chicken Embryos (Gallus domesticus)

Description: This article demonstrates for the first time that different processes in the ontogeny of the early vertebrate embryo (i.e., hypertrophic growth vs. development) have differential sensitivities to altered convective blood flow.
Date: April 19, 2013
Creator: Branum, Sylvia R.; Yamada-Fisher, Miho & Burggren, Warren W.
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open access

Simulation Of An Antihydrogen Gravity Experiment Utilizing Multiple Apertures

Description: The article presents an analytical model and a Monte Carlo simulation of an antihydrogen gravity experiment that would employ multiple apertures. The model was developed with the primary goal of reducing the experimental run time necessary to determine the direction of free fall acceleration for antimatter in the gravitational field of the Earth. The experiment would confine cryogenic antihydrogen plasma for producing antihydrogen (e.g., by three-body recombination).
Date: April 19, 2013
Creator: Hedlof, R. M. & Ordonez, Carlos A.
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Environmental Imagination River as Bridge

Description: This presentation is part of the faculty lecture series UNT Speaks Out on Water Conservation. In this presentation, the author discusses sustainable resource management and water conservation, including discussions on the Trinity River and water conservation in North Texas.
Date: April 22, 2013
Creator: Klaver, Irene
Item Type: Refine your search to only Presentation

Underwater with a Hand Lens in the Rivers of Cape Horn, Chile; Ecology, Biocultural Conservation and Education at the Top of the World (55°S) or Zen and communicating aquatic ecology at the Top of the World (55°S)

Description: This presentation is part of the faculty lecture series UNT Speaks Out on Water Conservation. In this presentation, the author discusses the rivers of Cape Horn, Chile and biocultural conservation and education.
Date: April 22, 2013
Creator: Kennedy, James H.
Item Type: Refine your search to only Presentation
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