Poster presentation for the 2012 University Scholars Day at the University of North Texas discussing research on the process of harvesting lightning as electrical energy.

The overall objective of this project is to examine the activity of nonspecific phosphohydrolases present in naturally occurring subsurface microorganisms for the purpose of promoting the immobilization of radionuclides through the production of uranium [U(VI)] phosphate precipitates. Specifically, we hypothesize that the precipitation of U(VI) phosphate minerals may be promoted through the microbial release and/or accumulation of PO4 3- as a means to detoxify radionuclides and heavy metals. An experimental approach was designed to determine the extent of phosphatase activity in bacteria previously isolated from contaminated subsurface soils collected at the ERSP Field Research Center (FRC) in Oak Ridge, TN. Screening of 135 metal resistant isolates for phosphatase activity indicated the majority (75 of 135) exhibited a phosphatase-positive phenotype. During this phase of the project, a PCR based approach has also been designed to assay FRC isolates for the presence of one or more classes of the characterized non-specific acid phophastase (NSAP) genes likely to be involved in promoting U(VI) precipitation. Testing of a subset of Pb resistant (Pbr) Arthrobacter, Bacillus and Rahnella strains indicated 4 of the 9 Pbr isolates exhibited phosphatase phenotypes suggestive of the ability to bioprecipitate U(VI). Two FRC strains, a Rahnella sp. strain Y9602 and …

We invite publishers, libraries, research centers, societies, funders, aggregators, and other scholarly communication stakeholders to join Project Meerkat to develop guidelines and standards for digital scholarly monograph usage data and to construct a neutral organizational apparatus for the ongoing collection and aggregation of data about these scholarly publications.

Poster for the 2015 Medical Library Association Annual Meeting and Exhibition. This poster discusses recommended library contributions to the retention of premedical students.

Poster presentation for the American Library Association (ALA) Annual Conference, Association of College and Research Libraries (ACRL) Science and Technology Section Program Poster Session. This poster discusses recommended library contributions to Science, Technology, Engineering and Math (STEM) retention based on a Library and Information Science (LIS) interpretation of a landmark study.

Poster presentation for the 2012 University Scholars Day at the University of North Texas discussing the relative influences of personal psychological factors on conversational interpretation and behavior.

Poster for the 2012 University Scholars Day at the University of North Texas discussing skeletal lymph muscles as effectors of the arterial baroreflex in the cane toad (Rhinella marina).

Poster for the 2012 University Scholars Day at the University of North Texas discussing the socioeconomic and cultural impact of the homeless on the Denton, Texas community.

Poster for the 2012 University Scholars Day at the University of North Texas discussing the socioeconomics and the ethics of organ donation.

Plutonium has a long half-life (2.4 x 104 years) and is of concern because of its chemical and radiological toxicity, high-energy alpha radioactive decay. A full understanding of its speciation and interactions with environmental processes is required in order to predict, contain, or remediate contaminated sites. Under aerobic conditions Pu is sparingly soluble, existing primarily in its tetravalent oxidation state. To the extent that pentavalent and hexavalent complexes and small colloidal species form they will increase the solubility and resultant mobility from contamination sources. There is evidence that in both marine environments and brines substantial fractions of the plutonium in solution is present as hexavalent plutonyl, PuO2 2+.

Poster for the 2012 University Scholars Day at the University of North Texas discussing science, technology, engineering, and mathematics (STEM) education and America's future.

Poster for the 2012 University Scholars Day at the University of North Texas discussing research on suicide across time and culture.

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The overall goal of this project is to develop and test a thermodynamic network model for predicting the effects of substrate additions and environmental perturbations on microbial growth, community composition and system geochemistry. The hypothesis is that a thermodynamic analysis of the energy-yielding growth reactions performed by defined groups of microorganisms can be used to make quantitative and testable predictions of the change in microbial community composition that will occur when a substrate is added to the subsurface or when environmental conditions change.

Poster presentation for the 2012 University Scholars Day at the University of North Texas discussing a trace element analysis of mineral water samples through XRF and ICP-MS.

Poster presentation for the 2012 University Scholars Day at the University of North Texas discussing research on transitioning coal-fired power plants into combined solar and wind energy power plants.

Poster presentation for the 2012 University Scholars Day at the University of North Texas discussing a scientific game to discover new mapping algorithms for domain-specific architectures named, "Untangled."

Poster presentation for the 2012 University Scholars Day at the University of North Texas discussing the most important factors for maximizing fan attendance at sporting events.

Poster presentation for the 2012 University Scholars Day at the University of North Texas discussing research on what is in our drinking water.