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88,656 Matching Results

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Results: 1 - 24 of 88,656 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
1,2- Hydroxypyridonates as Contrast Agents for Magnetic ResonanceImaging: TREN-1,2-HOPO (open access)

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
E-1 (5-8-18)

E-1 (5-8-18)

Photograph of Dickson FD Engine 1. Photo taken behind Ardmore FD HQ station.
Date: May 8, 2018
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
1.5" heavy pressure valve

1.5" heavy pressure valve

Blueprint depicting technical details of Battleship Texas.
Date: April 8, 1927
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
1.5" heavy pressure valve cast steel

1.5" heavy pressure valve cast steel

Blueprint depicting technical details of Battleship Texas.
Date: December 8, 1913
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
1/5-scale experiment of a Mark I boiling-water reactor pressure-suppression system under hypothetical LOCA conditions (open access)

1/5-scale experiment of a Mark I boiling-water reactor pressure-suppression system under hypothetical LOCA conditions

Experimental results show the sensitivity of hydrodynamically generated vertical loads to changes in the drywell pressurization rate, downcomer submergence, and vent-line loss coefficient. Insignificant effects on peak vertical loads were observed when the vent-line loss was varied. Peak vertical loads can be reduced by adding initial drywell overpressure so that the downcomers are partly cleared of water. Spatial variation of pressure at about the time of vent clearing is seen in comparisons of data from locations along the axis of the toroidal wetwell.
Date: July 8, 1977
Creator: Pitts, J. H. & McCauley, E. W.
Object Type: Article
System: The UNT Digital Library
L-1 (7-8-17)

L-1 (7-8-17)

Photograph of Stroud Ladder 1.
Date: July 8, 2017
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-1 (7-8-17)

E-1 (7-8-17)

Photograph of Stroud Engine 1.
Date: July 8, 2017
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-1 (8-8-16)

E-1 (8-8-16)

Photograph of Harrah Engine 1.
Date: August 8, 2016
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-1 (8-8-20)

E-1 (8-8-20)

Photograph of Fairview E-1, a 2016 Pierce Saber.
Date: August 8, 2020
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-1 (10-8-14)

E-1 (10-8-14)

Photograph of Hominy Engine 1.
Date: October 8, 2014
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-1 (12-8-17)

E-1 (12-8-17)

Photograph of Newcastle FD Engine 1.
Date: December 8, 2017
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-1 1970 Ford Boardman F-1742 750 500 GM

E-1 1970 Ford Boardman F-1742 750 500 GM

Photograph of Madill FD Engine 1, a 1970 Ford-Boardman.
Date: January 8, 2018
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
L-1 Pierce (5-8-21)

L-1 Pierce (5-8-21)

Photograph of MFD Ladder 1, a 2020 Pierce Velocity. 2000 gpm pump, 300 gallon tank, and a 100' midship-mounted platform ladder.
Date: May 8, 2021
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-2 (5-8-18)

E-2 (5-8-18)

Photograph of Dickson FD Engine 2. Photo taken behind Ardmore FD HQ station.
Date: May 8, 2018
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
2.5" low pressure valve

2.5" low pressure valve

Blueprint depicting technical details of Battleship Texas.
Date: August 8, 1912
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
2.5" low pressure valve

2.5" low pressure valve

Blueprint depicting technical details of Battleship Texas.
Date: August 8, 1912
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
E-2 (8-8-20)

E-2 (8-8-20)

Photograph of Fairview E-2.
Date: August 8, 2020
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-2 1980 Ford Boardman F-2430 750 500 GM

E-2 1980 Ford Boardman F-2430 750 500 GM

Photograph of Madill FD E-2, a 1980 Ford-Boardman.
Date: January 8, 2018
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
2-D Imaging of Electron Temperature in Tokamak Plasmas (open access)

2-D Imaging of Electron Temperature in Tokamak Plasmas

By taking advantage of recent developments in millimeter wave imaging technology, an Electron Cyclotron Emission Imaging (ECEI) instrument, capable of simultaneously measuring 128 channels of localized electron temperature over a 2-D map in the poloidal plane, has been developed for the TEXTOR tokamak. Data from the new instrument, detailing the MHD activity associated with a sawtooth crash, is presented.
Date: July 8, 2004
Creator: Munsat, T.; Mazzucato, E.; Park, H.; Domier, C. W.; Johnson, M.; Luhmann, N. C. Jr. et al.
Object Type: Report
System: The UNT Digital Library
E-2 Pierce (10-8-14)

E-2 Pierce (10-8-14)

Photograph of Hominy Engine 2. This truck was later sold to Wynona, OK.
Date: October 8, 2014
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-3 (8-8-20)

E-3 (8-8-20)

Photograph of Fairview E-3.
Date: August 8, 2020
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
E-3 (9-8-2016)

E-3 (9-8-2016)

Photograph of a white Chickasha fire truck with a red stripe down the side. The rig details are on the back of the photo.
Date: September 8, 2016
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
3-D Silicon Photonic Lattices- Cornerstone of an Emerging Photonics Revolution (open access)

3-D Silicon Photonic Lattices- Cornerstone of an Emerging Photonics Revolution

Three-dimensional photonic lattices are engineered materials which are the photonic analogues of semiconductors. These structures were first proposed and demonstrated in the mid-to-late 1980's. However, due to fabrication difficulties, lattices active in the infrared are only just emerging. Wide ranges of structures and fabrication approaches have been investigated. The most promising approach for many potential applications is a diamond-like structure fabricated using silicon microprocessing techniques. This approach has enabled the fabrication of 3-D silicon photonic lattices active in the infrared. The structures display band gaps centered from 12{micro} down to 1.55{micro}.
Date: July 8, 1999
Creator: Fleming, J.G. & Lin, Shawn-Yu
Object Type: Article
System: The UNT Digital Library
[3 men pictured with Spectracide products]

[3 men pictured with Spectracide products]

Photograph of three men standing behind a table displaying Spectracide and Sequestrene lawn and garden care products.
Date: June 8, 1964
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Photograph
System: The UNT Digital Library