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Technical Memorandum: Lewisville Lake Watershed Protection and Management Strategies (open access)

Technical Memorandum: Lewisville Lake Watershed Protection and Management Strategies

With a current population of just over half a million and a 2030 projected population of approximately one million, expansion throughout Denton County shows no sign of slowing down (NCTCOG). Increasingly, freshwater resources are also facing increased pressure from this urban expansion. Effective assessment and management techniques are necessary to protect the diversity of ecosystem services found within fluvial ecosystems and to mitigate current and future conditions of environmental stressor amplified by urban development. The use of various spatial analysis techniques in environmental assessment present more expedient, cost effective, and broader ranging methods of evaluation than traditional field techniques. One such novel evaluation technique is the Water Quality Corridor Management (WQCM) model, developed by the University of North Texas in cooperation with the Upper Trinity Regional Water District (UTRWD). The WQCM model is a geospatial database that utilizes GIS and remote sensing techniques to assess and prioritize stream reaches according to their overall health and sustainability. This project assessed the viability of the WQCM model in reviewing the status of stream systems, and ultimately, established an accurate mechanism for evaluating the stream corridor and surface water quality draining into Lewisville Lake, a popular recreation site and drinking water source for …
Date: September 2007
Creator: Atkinson, Samuel F.; Hunter, Bruce Allan; English, April; Boe, Brian & Dameron, Matt
System: The UNT Digital Library
Peter Huchel 1903-1981: From "Encyclopedia of German Literature" (open access)

Peter Huchel 1903-1981: From "Encyclopedia of German Literature"

Encyclopedia article discussing writer Peter Huchel.
Date: March 1, 2000
Creator: Costabile-Heming, Carol Anne
System: The UNT Digital Library
Braun, Volker: Encyclopedia of Contemporary German Culture (open access)

Braun, Volker: Encyclopedia of Contemporary German Culture

Encyclopedia article discussing writer Volker Braun.
Date: 1999
Creator: Costabile-Heming, Carol Anne
System: The UNT Digital Library
Reichart, Elisabeth: Encyclopedia of Contemporary German Culture (open access)

Reichart, Elisabeth: Encyclopedia of Contemporary German Culture

Encyclopedia article discussing writer Elisabeth Reichart.
Date: 1999
Creator: Costabile-Heming, Carol Anne
System: The UNT Digital Library
Kunze, Reiner: Encyclopedia of Contemporary German Culture (open access)

Kunze, Reiner: Encyclopedia of Contemporary German Culture

Encyclopedia article discussing writer Reiner Kunze.
Date: 1999
Creator: Costabile-Heming, Carol Anne
System: The UNT Digital Library
Schedlinski, Rainer: Encyclopedia of Contemporary German Culture (open access)

Schedlinski, Rainer: Encyclopedia of Contemporary German Culture

Encyclopedia article discussing writer Rainer Schedlinski.
Date: 1999
Creator: Costabile-Heming, Carol Anne
System: The UNT Digital Library
Erb, Elke: Encyclopedia of Contemporary German Culture (open access)

Erb, Elke: Encyclopedia of Contemporary German Culture

Encyclopedia article discussing writer Elke Erb.
Date: 1999
Creator: Costabile-Heming, Carol Anne
System: The UNT Digital Library
Kolbe, Uwe: Encyclopedia of Contemporary German Culture (open access)

Kolbe, Uwe: Encyclopedia of Contemporary German Culture

Encyclopedia article discussing writer Uwe Kolbe.
Date: 1999
Creator: Costabile-Heming, Carol Anne
System: The UNT Digital Library
Supplementary materials: Regioselective synthesis of plant (iso)flavone glycosides in Escherichia coli (open access)

Supplementary materials: Regioselective synthesis of plant (iso)flavone glycosides in Escherichia coli

Supplementary materials accompanying an article on regioselective synthesis of plant (iso)flavone glycosides in Escherichia coli.
Date: August 2008
Creator: He, Xian-Zhi; Li, Wen-Sheng; Blount, Jack W. & Dixon, R. A.
System: The UNT Digital Library
Supplementary materials: Improving saccharification efficiency of alfalfa stems through modification of the terminal stages of monolignol biosynthesis (open access)

Supplementary materials: Improving saccharification efficiency of alfalfa stems through modification of the terminal stages of monolignol biosynthesis

Supplementary materials accompanying an article on improving saccharification efficiency of alfalfa stems through modification of the terminal stages of monolignol biosynthesis.
Date: September 27, 2008
Creator: Jackson, Lisa A.; Shadle, Gail L.; Zhou, Rui; Nakashima, Jin; Chen, Fang & Dixon, R. A.
System: The UNT Digital Library
The Reaction Kinetics of Amino Radicals with Sulfur Dioxide (open access)

The Reaction Kinetics of Amino Radicals with Sulfur Dioxide

Abstract: Application of the laser photolysis–laser-induced fluorescence method to the reaction NH2 + SO2 in argon bath gas yields pressure-dependent, third-order kinetics which may be summarized as 𝑘 = (1.49 ± 0.15) × 10^−31 (𝑇/298 K) − 0.83 cm^6 molecule^−2 s^−1 over 292 – 555 K, where the uncertainty is the 95% confidence interval and includes possible systematic errors.The quenching of vibrationally excited NH2 is consistent with a high-pressure limit for NH2 + SO2 of (1.62 ± 0.25) × 10^−11 cm^3 molecule^−1 s^−1 over the temperature range 295–505 K, where again the 95% confidence interval is shown. Abinitio analysis yields a H2N – SO2 dissociation enthalpy of 73.5 kJmol−1, and comparison with RRKM theory and the exponential down model for energy transfer yields ⟨Δ𝐸⟩down = 350 cm^−1 for Ar at room temperature.
Date: April 29, 2015
Creator: Gao, Yide; Glarborg, Peter & Marshall, Paul
System: The UNT Digital Library