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Salt Dependence of the Radius of Gyration and Flexibility of Single-stranded DNA in Solution probed by Small-angle X-ray Scattering

Description: Short single-stranded nucleic acids are ubiquitous in biological processes and understanding their physical properties provides insights to nucleic acid folding and dynamics. We used small angle x-ray scattering to study 8-100 residue homopolymeric single-stranded DNAs in solution, without external forces or labeling probes. Poly-T's structural ensemble changes with increasing ionic strength in a manner consistent with a polyelectrolyte persistence length theory that accounts for molecular flex… more
Date: July 6, 2012
Creator: Sim, Adelene Y.L.; Lipfert, Jan; Herschlag, Daniel & Doniach, Sebastian
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Glycosylation Helps Cellulase Enzymes Bind to Plant Cell Walls (Fact Sheet)

Description: Computer simulations suggest a new strategy to design enhanced enzymes for biofuels production. Large-scale computer simulations predict that the addition of glycosylation on carbohydrate-binding modules can dramatically improve the binding affinity of these protein domains over amino acid mutations alone. These simulations suggest that glycosylation can be used as a protein engineering tool to enhance the activity of cellulase enzymes, which are a key component in the conversion of cellulose t… more
Date: June 1, 2012
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NREL Creates New Pathways for Producing Biofuels and Acids from Cyanobacteria (Fact Sheet)

Description: Cyanobacteria use photosynthesis to convert carbon dioxide into glycogen, a carbohydrate that is stored in the cells as an energy source. However, researchers at the National Renewable Energy Laboratory (NREL) have discovered that this photosynthesis can be redirected to produce lipids and valuable organic acids. The research could yield a new source of biofuels, because the lipids can potentially be extracted from the bacteria and converted into biodiesel.
Date: October 1, 2012
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On-Chip Dielectrophoretic Separation and Concentration of Viable, Non-Viable and Viable but Not Culturable (VBNC) Escherichia coli

Description: Although bacterial culture remains the gold standard for detection of viable bacteria in environmental specimens, the typical time requirement of twenty-four hours can delay and even jeopardize appropriate public health intervention. In addition, culture is incapable of detecting viable but not culturable (VBNC) species. Conversely, nucleic acid and antibody-based methods greatly decrease time to detection but rarely characterize viability of the bacteria detected. Through selection by membrane… more
Date: April 12, 2012
Creator: Packard, M M; Shusteff, M & Alocilja, E C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Understanding Nitrogen Fixation

Description: The purpose of our program is to explore fundamental chemistry relevant to the discovery of energy efficient methods for the conversion of atmospheric nitrogen (N{sub 2}) into more value-added nitrogen-containing organic molecules. Such transformations are key for domestic energy security and the reduction of fossil fuel dependencies. With DOE support, we have synthesized families of zirconium and hafnium dinitrogen complexes with elongated and activated N-N bonds that exhibit rich N{sub 2} fun… more
Date: May 25, 2012
Creator: Chirik, Paul J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Life-Cycle Analysis of Alternative Aviation Fuels In GREET

Description: The Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) model, developed at Argonne National Laboratory, has been expanded to include well-to-wake (WTWa) analysis of aviation fuels and aircraft. This report documents the key WTWa stages and assumptions for fuels that represent alternatives to petroleum jet fuel. The aviation module in GREET consists of three spreadsheets that present detailed characterizations of well-to-pump and pump-to-wake parameters and WTWa resu… more
Date: July 23, 2012
Creator: Elgowainy, A.; Han, J.; Wang, M.; Carter, N.; Stratton, R.; Hileman, J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report for: "Bis-pi-allylpalladium Complexes in Catalysis of Multicomponent Reactions"

Description: The research project involved the development of new and functionally improved Pd(II) catalyst for a three-component reaction of boronic acids, allenes and imines to afford homoallylic amines that are useful in synthesis of biologically active heterocycles. Furthermore, insights into the reaction mechanism and the structure and reactivity of the catalytically active intermediates involved in this process were sought. As a result of this work, a new type of Pd-catalysts possessing an auxiliary l… more
Date: June 29, 2012
Creator: Malinakova, H. C. & Shiota, Atsushi
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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