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72,846 Matching Results

Start Over Day 8th Language English

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Results: 1 - 24 of 72,846 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
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
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
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
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
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 18, Ed. 1 Monday, August 8, 1977 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 18, Ed. 1 Monday, August 8, 1977

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: August 8, 1977
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 20, No. 5, Ed. 1 Monday, May 8, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 20, No. 5, Ed. 1 Monday, May 8, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: May 8, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
A 4 GSa/s Instability Feedback Processing System for Intra-Bunch Instabilities (open access)

A 4 GSa/s Instability Feedback Processing System for Intra-Bunch Instabilities

None
Date: November 8, 2013
Creator: Dusatko, J.; Cesaratto, J. M.; Fox, J. D.; Pollock, K.; Rivetta, C. H.; Turgut, O. et al.
Object Type: Article
System: The UNT Digital Library
5.5" Separator for Dynamo Steam [Alterations]

5.5" Separator for Dynamo Steam [Alterations]

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

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
6.5" Light Pressure Sea Valve [Alterations]

6.5" Light Pressure Sea Valve [Alterations]

Blueprint depicting technical details of Battleship Texas.
Date: April 8, 1927
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
6", 7", 8" Low Pressure Sea Valves

6", 7", 8" Low Pressure Sea Valves

Blueprint depicting technical details of Battleship Texas.
Date: April 8, 1927
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
6" Gate Valves in Firemain - Arrgt. of Operating Gear

6" Gate Valves in Firemain - Arrgt. of Operating Gear

Blueprint depicting technical details of Battleship Texas.
Date: August 8, 1942
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
(6)Li, (7)Li Nuclear Magnetic Resonance Investigation of Lithium Coordination in Binary Phosphate Glasses (open access)

(6)Li, (7)Li Nuclear Magnetic Resonance Investigation of Lithium Coordination in Binary Phosphate Glasses

{sup 6}Li and {sup 7}Li solid state magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy has been used to investigate the local coordination environment of lithium in a series of xLi{sub 2}O {center_dot} (1-x)P{sub 2}O{sub 5} glasses, where 0.05 {le} x {le} 0.55. Both the {sup 6}Li and {sup 7}Li show chemical shift variations with changes in the Li{sub 2}O concentration, but the observed {sup 6}Li NMR chemical shifts closely approximate the true isotropic chemical shift and can provide a measure of the lithium bonding environment. The {sup 6}Li NMR results indicate that in this series of lithium phosphate glasses the Li atoms have an average coordination between four and five. The results for the metaphosphate glass agree with the coordination number and range of chemical shifts observed for crystalline LiPO{sub 3}. An increase in the {sup 6}Li NMR chemical shift with increasing Li{sub 2}O content was observed for the entire concentration range investigated, correlating with increased cross-linking of the phosphate tetrahedral network by O-Li-O bridges. The {sup 6}Li chemical shifts were also observed to vary monotonically through the anomalous glass transition temperature (T{sub g}) minimum. This continuous chemical shift variation shows that abrupt changes in the Li coordination …
Date: February 8, 1999
Creator: Alam, T.M.; Boyle, T.J.; Brow, R.K. & Conzone, S.
Object Type: Article
System: The UNT Digital Library
8" discharge sea chest for F&B pump discharge

8" discharge sea chest for F&B pump discharge

Blueprint depicting technical details of Battleship Texas.
Date: April 8, 1927
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
9-11 Commission Hearing #6, December 8, 2003, Part 1 captions transcript

9-11 Commission Hearing #6, December 8, 2003, Part 1

Recording of the sixith public hearing held by the National Commission on Terrorist Attacks upon the United States on December 8, 2003 at the Russell Senate Office Building in Washington D.C. The Commission heard testimony from four panels of witnesses on domestic intelligence collection, protecting privacy while preventing terrorism, and the use of immigration laws to combat terrorism. This section includes the opening statement by Chairman Kean in addition to the first panel on intelligence collection within the United States.
Date: December 8, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #6, December 8, 2003, Part 2 captions transcript

9-11 Commission Hearing #6, December 8, 2003, Part 2

Recording of the sixith public hearing held by the National Commission on Terrorist Attacks upon the United States on December 8, 2003 at the Russell Senate Office Building in Washington D.C. The Commission heard testimony from four panels of witnesses on domestic intelligence collection, protecting privacy while preventing terrorism, and the use of immigration laws to combat terrorism.This section includes the panel on protecting privacy, preventing terrorism with testimony from Judith A. Miller, Stewart A. Baker, and Marc Rotenberg.
Date: December 8, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #6, December 8, 2003, Part 3 captions transcript

9-11 Commission Hearing #6, December 8, 2003, Part 3

Recording of the sixith public hearing held by the National Commission on Terrorist Attacks upon the United States on December 8, 2003 at the Russell Senate Office Building in Washington D.C. The Commission heard testimony from four panels of witnesses on domestic intelligence collection, protecting privacy while preventing terrorism, and the use of immigration laws to combat terrorism. This section includes that panel on preventive detention: use of immigration laws and enemy combatant designations to combat terrorism, with testimony from Jan Ting, Khaled Medhat About El Fadl, and David Martin.
Date: December 8, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #6, December 8, 2003, Part 4 captions transcript

9-11 Commission Hearing #6, December 8, 2003, Part 4

Recording of the sixith public hearing held by the National Commission on Terrorist Attacks upon the United States on December 8, 2003 at the Russell Senate Office Building in Washington D.C. The Commission heard testimony from four panels of witnesses on domestic intelligence collection, protecting privacy while preventing terrorism, and the use of immigration laws to combat terrorism. This section includes the final panel on government organizations and domestic intelligence with testimony from William P. Barr, John J. Hamre, and John MacGaffin.
Date: December 8, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #9, April 8, 2004, Part 1 captions transcript

9-11 Commission Hearing #9, April 8, 2004, Part 1

Recording of the ninth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 8, 2004 at the Hart Senate Office Building in Washington, D.C. The Commission heard testimony from Dr. Condoleezza Rice, Assistant to the President for National Security Affairs on the formulation and conduct of U.S. counterterrorism policy.
Date: April 8, 2004
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
The 10-20-30 Plan and Persistent Poverty Counties (open access)

The 10-20-30 Plan and Persistent Poverty Counties

This report discusses the 10-20-30 plan of reallocating funds in rural development programs toward counties with systemic poverty levels defined as 20% of the population being at or below poverty level for 30 years. This report explains why targeting funds to persistent poverty counties might be of interest, how "persistent poverty" is defined and measured, and how different interpretations of the definition and different data source selections could yield different lists of counties identified as persistently poor. This report does not compare the 10-20-30 plan's advantages and disadvantages against other policy options, nor does it examine the range of programs or policy goals for which the 1020-30 plan might be an appropriate policy tool.
Date: February 8, 2018
Creator: Dalaker, Joseph
Object Type: Report
System: The UNT Digital Library