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1,2- Hydroxypyridonates as Contrast Agents for Magnetic ResonanceImaging: TREN-1,2-HOPO
1,2-Hydroxypyridinones (1,2-HOPO) form very stable lanthanide complexes that may be useful as contrast agents for Magnetic Resonance Imaging (MRI). X-ray diffraction of single crystals established that the solid state structures of the Eu(III) and the previously reported [Inorg. Chem. 2004, 43, 5452] Gd(III) complex are identical. The recently discovered sensitizing properties of 1,2-HOPO chelates for Eu(III) luminescence allow direct measurement of the number if water molecules in the metal complex. Fluorescence measurements of the Eu(III) complex corroborate that in solution two water molecules coordinate the lanthanide (q = 2) as proposed from the analysis of NMRD profiles. In addition, fluorescence measurements have verified the anion binding interactions of lanthanide TREN-1,2-HOPO complexes in solution, studied by relaxivity, revealing only very weak oxalate binding (K{sub A} = 82.7 {+-} 6.5 M{sup -1}). Solution thermodynamic studies of the metal complex and free ligand have been carried out using potentiometry, spectrophotometry and fluorescence spectroscopy. The metal ion selectivity of TREN-1,2-HOPO supports the feasibility of using 1,2-HOPO ligands for selective lanthanide binding [pGd = 19.3 (2); pZn = 15.2 (2), pCa = 8.8 (3)].
Date:
May 8, 2007
Creator:
Jocher, Christoph J.; Moore, Evan G.; Xu, Jide; Avedano, Stefano; Botta, Mauro; Aime, Silvio et al.
Object Type:
Article
System:
The UNT Digital Library
2008 President's Budget Rollout
This report summarizes NOAA performance during the 2006 fiscal year as well as budget and program change highlights.
Date:
February 8, 2007
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
78th Texas Legislature, Regular Session, Senate Bill 673, Chapter 46
Bill introduced by the Texas Senate relating to allowing a student receiving special education services to participate in a graduation ceremony after the fourth year of high school.
Date:
May 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 84, Chapter 37
Bill introduced by the Texas House of Representatives relating to issuance and renewal of a driver's license of an elderly person.
Date:
May 8, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 92, Chapter 38
Bill introduced by the Texas House of Representatives relating to the acquisition of certain automated external defibrillators.
Date:
May 8, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 323, Chapter 259
Bill introduced by the Texas House of Representatives relating to three-point seat belts on buses that transport schoolchildren.
Date:
June 8, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 385, Chapter 39
Bill introduced by the Texas House of Representatives relating to condemnation of historical sites at the direction of the Commission of Control for Texas Centennial Celebrations.
Date:
May 8, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 708, Chapter 40
Bill introduced by the Texas House of Representatives relating to Celebrate Freedom Week in public schools.
Date:
May 8, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 978, Chapter 41
Bill introduced by the Texas House of Representatives relating to publication of the annual financial statement by a school district.
Date:
May 8, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 3678, Chapter 261
Bill introduced by the Texas House of Representatives relating to voluntary student expression of religious viewpoints in public schools.
Date:
June 8, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 12, Chapter 262
Bill introduced by the Texas Senate relating to programs for the enhancement of air quality, including energy efficiency standards in state purchasing and energy consumption; providing penalties.
Date:
June 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 103, Chapter 263
Bill introduced by the Texas Senate relating to the Texas Youth Commission and the prosecution of certain offenses and delinquent conduct in the Texas Youth Commission and certain other criminal justice agencies; providing penalties.
Date:
June 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 271, Chapter 44
Bill introduced by the Texas Senate relating to the qualifications to serve as an associate judge in certain family law proceedings.
Date:
May 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 526, Chapter 45
Bill introduced by the Texas Senate relating to providing that a municipality may allow a municipal fire marshal or arson investigator to travel in an unmarked municipal vehicle when performing official duties.
Date:
May 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 849, Chapter 47
Bill introduced by the Texas Senate relating to the submission of annual reports by farm mutual insurance companies.
Date:
May 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 884, Chapter 48
Bill introduced by the Texas Senate relating to the regulation of consumer debt management services.
Date:
May 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 1665, Chapter 49
Bill introduced by the Texas Senate relating to regulation of emissions from residential water heaters.
Date:
May 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Concurrent Resolution 14
Concurrent resolution introduced by the Texas Senate and House of Representatives granting the legislature permission to adjourn for more than three days during the period beginning on Wednesday, January 31, 2007, and ending on Monday, February 5, 2007.
Date:
February 8, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
Advanced Thermal Interface Materials for Power Electronics
Advancing thermal interface materials for power electronics is a critical factor in power electronics equipment. NREL aims to improve thermal interface materials for power electronics technologies.
Date:
November 8, 2007
Creator:
Narumanchi, S.
Object Type:
Presentation
System:
The UNT Digital Library
Agricultural Bio-Fueled Generation of Electricity and Development of Durable and Efficent NOx Reduction
The objective of this project was to define the scope and cost of a technology research and development program that will demonstrate the feasibility of using an off-the-shelf, unmodified, large bore diesel powered generator in a grid-connected application, utilizing various blends of BioDiesel as fuel. Furthermore, the objective of project was to develop an emissions control device that uses a catalytic process and BioDiesel (without the presence of Ammonia or Urea)to reduce NOx and other pollutants present in a reciprocating engine exhaust stream with the goal of redefining the highest emission reduction efficiencies possible for a diesel reciprocating generator. Process: Caterpillar Power Generation adapted an off-the-shelf Diesel Generator to run on BioDiesel and various Petroleum Diesel/BioDiesel blends. EmeraChem developed and installed an exhaust gas cleanup system to reduce NOx, SOx, volatile organics, and particulates. The system design and function was optimized for emissions reduction with results in the 90-95% range;
Date:
August 8, 2007
Creator:
Boyd, Rodney
Object Type:
Report
System:
The UNT Digital Library
Agricultural Credit: Institutions and Issues
The federal government has a long history of providing credit assistance to farmers by issuing direct loans and guarantees, and creating rural lending institutions. These institutions include the Farm Service Agency (FSA) of the U.S. Department of Agriculture (USDA), which makes or guarantees loans to farmers who cannot qualify at other lenders, and the Farm Credit System (FCS), which is a network of borrower-owned lending institutions operating as a government-sponsored enterprise. This report discusses legislation regarding this credit assistance expected in the the 110th Congress. Appropriators will consider funding for FSA’s farm loan programs, and the agriculture committees may consider changes to FSA and FCS lending programs. The 2007 farm bill is expected to be the venue for many of the authorizing issues, although stand-alone legislation may be used for extensive reforms.
Date:
March 8, 2007
Creator:
Monke, Jim
Object Type:
Report
System:
The UNT Digital Library
Agriculture-Based Renewable Energy Production
This report discusses federal programs on agriculture-based renewable energy and how people associated with agriculture have reacted. Moreover, the report discusses how this reaction has been positive and taken the form of an increase in ethanol production along with wind energy.
Date:
January 8, 2007
Creator:
Schnepf, Randy
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 131, No. 36, Ed. 1 Thursday, February 8, 2007
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
February 8, 2007
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 131, No. 40, Ed. 1 Thursday, March 8, 2007
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
March 8, 2007
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History