Access

Resource Type

Partner

Collection

Serial/Series Title

Degree Department

Degree Discipline

Degree Level

Country

States

Counties

Decade

Year

Month

Day

Language

84,926 Matching Results

Start Over Day 29th

Results open in a new window/tab.

Results: 1 - 24 of 84,926 next

1.5" Angle Stop Check Valve for 250 Cu.Ft. Medium-Pressure Air Compressor

Blueprint depicting technical details of Battleship Texas.

Date: April 29, 1942

Creator: unknown

Object Type: Technical Drawing

System: The Portal to Texas History

1.5" Valves - Air - Oil Water Service for 250 Cu.Ft. Medium-Pressure Air Co

Blueprint depicting technical details of Battleship Texas.

Date: April 29, 1942

Creator: unknown

Object Type: Technical Drawing

System: The Portal to Texas History

1.5" Water & Air Valves for 250 Cu.Ft. Medium-Pressure Air Compressor

Blueprint depicting technical details of Battleship Texas.

Date: April 29, 1942

Creator: unknown

Object Type: Technical Drawing

System: The Portal to Texas History

E-1 (8-29-17)

Photograph of MFD E-1, a Sutphen pumper.

Date: August 29, 2017

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

E-1 (11-29-18)

Photograph of Ft. Towson FD Engine 1.

Date: November 29, 2018

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

(open access)

E-1 common analog model. Revision 6.1 (RN-S-0469)

None

Date: December 29, 1970

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

1. K+ Charge Exchange - Search For K+ Charge Exchange

An experiment was designed utilizing a charge-exchange reaction to study the decay and interactions of the neutral K mesons produced. The experiment produced no events that could be interpreted as either the decay or interaction of neutral K mesons. The nature of the experiment and the possible explanations of this unexpected result are presented in this paper.

Date: July 29, 1959

Creator: Birge, Robert W.; Courant, Hans J.; Lanou, Robert E., Jr. & Whitehead, Marian N.

Object Type: Report

System: The UNT Digital Library

E-2 {8-29-17}

Photograph of MFD E-2, a Pierce Velocity pumper.

Date: August 29, 2017

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

E-2 (11-29-18)

Photograph of Ft. Towson FD Engine 2.

Date: November 29, 2018

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

(open access)

2-D Simulations of Drainage Winds and Diffusion Compared to Observations

A vertically integrated dynamical drainage flow model is developed from conservation equations for momentum and mass in a terrain-following coordinate system. Wind fields from the dynamical model drive a Monte Carlo transport and diffusion model. The model needs only topographic data, an Eulerian or Lagrangian time scale and a surface drag coefficient for input data, and can be started with a motionless atmosphere. Model wind and diffusion predictions are compared to observations from the rugged Geysers CA area. Model winds generally agree with observed surface winds, and in some cases may give better estimates of area-averaged flow than point observations. Tracer gas concentration contours agree qualitatively with observed contours, and point predictions of maximum concentrations were correctly predicted to within factors of 2 to 10. Standard statistical tests of model skill showed that the accuracy of the predictions varied significantly from canyon to canyon in the Geysers are a. Model wind predictions are also compared to observations from the Savannah River Plant of SC which has gently rolling terrain. The model correctly simulated the slower development of drainage winds and slower deepening of the drainage layer in the Savannah River Valley, relative to the Geysers CA simulations. The SC simulations …

Date: May 29, 2001

Creator: Garrett, A. J.

Object Type: Article

System: The UNT Digital Library

2" HP valve with locking device for whistle & siren

Blueprint depicting technical details of Battleship Texas.

Date: April 29, 1914

Creator: unknown

Object Type: Technical Drawing

System: The Portal to Texas History

(open access)

2-Page Summary for Neptunium solubility in the Near-field Environment of A Proposed Yucca Mountain Repository

The total system performance assessment (TSPA) for the proposed repository at Yucca Mountain, NV, includes a wide variety of processes to evaluate the potential release of radionuclides from the Engineered Barrier System into the unsaturated zone of the geosphere. The principal processes controlling radionuclide release and mobilization from the waste forms are captured in the model to assess the dissolved concentrations of radionuclides in the source-term. The TSPA model of the source-term incorporates the far-from-equilibrium dissolution of, for example, spent nuclear fuel (SNF) to capture bounding rates of radionuclide availability as the SNF degrades. In addition, for individual radionuclides, the source-term model evaluates solubility constraints that are more indicative of longer-term, equilibrium processes that can limit the potential mass transport from the source term in those cases. These solubility limits represent phase saturation and precipitation processes that can occur either at the waste form as it alters, or at other locations in the near-field environment (e.g., within the invert) if chemical conditions are different. Identification and selection of applicable constraints for solubility-limited radionuclide concentrations is a primary focus in formulating the source-term model for the TSPA. Neptunium is a long-lived radionuclide that becomes a larger fraction of the potential dose …

Date: March 29, 2005

Creator: Sassani, D.; van Luik, A. & Summerson, J.

Object Type: Report

System: The UNT Digital Library

E-3 Boardman (8-29-17)

Photograph of MFD E-3, a Ford-Boardman pumper.

Date: August 29, 2017

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

(open access)

3-D Characterization of the Structure of Paper and Paperboard and Their Application to Optimize Drying and Water Removal Processes and End-Use Applications

The three dimensional structure of paper materials plays a critical role in the paper manufacturing process especially via its impact on the transport properties for fluids. Dewatering of the wet web, pressing and drying will benefit from knowledge of the relationships between the web structure and its transport coefficients. The structure of the pore space within a paper sheet is imaged in serial sections using x-ray micro computed tomography. The three dimensional structure is reconstructed from these sections using digital image processing techniques. The structure is then analyzed by measuring traditional descriptors for the pore space such as specific surface area and porosity. A sequence of microtomographs was imaged at approximately 2 m intervals and the three-dimensional pore-fiber structure was reconstructed. The pore size distributions for both in-plane as well as transverse pores were measured. Significant differences in the in-plane (XY) and the transverse directions in pore characteristics are found and may help partly explain the different liquid and vapor transport properties in the in-plane and transverse directions. Results with varying sheet structures compare favorably with conventional mercury intrusion porosimetry data. Interestingly, the transverse pore structure appears to be more open with larger pore size distribution compared to the in …

Date: August 29, 2004

Creator: Shri Ramaswamy, University of Minnesota & B.V. Ramarao, State University of New York

Object Type: Report

System: The UNT Digital Library

(open access)

3-D Measurement of Deformation Microstructure of Al(0.2%)Mg Using Submicron Resolution White X-Ray Microbeams

We have used submicron-resolution white x-ray microbeams on the MHATT-CAT beamline 7-ID at the Advanced Photon Source to develop techniques for three-dimensional investigation of the deformation microstructure in a 20% plane strain compressed Al(0.2%)Mg tri-crystal. Kirkpatrick-Baez mirrors were used to focus white radiation from an undulator to a 0.7 x 0.7 {micro}m{sup 2} beam that was scanned over bi- and tri-crystal regions near the triple-junction of the tri-crystal. Depth resolution along the x-ray microbeam of less than 5 microns was achieved by triangulation to the diffractibn source point using images taken at a series of CCD distances from the microbeam. Computer indexing of the deformation cell structure in the bi-crystal region provided orientations of individual subgrains to {approximately}0.01 degrees, making possible detailed measurements of the rotation axes between individual cells.

Date: November 29, 1999

Creator: Larson, B. C.; tamura, N.; Chung, J.-S.; Ice, G. E.; Budai, J. D.; Tischler, J. Z. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

3-D vertical seismic profiling at LLNL Site 300

The initial goal of the 3-D Vertical Seismic Profiling (VSP) work at LLNL was to characterize seismic wave velocities and frequencies below the vadose zone to design the acquisition geometry for a 3-D shallow surface seismic reflection survey. VSPs are also used routinely to provide a link between surface seismic data and well logs. However, a test 2-D seismic line recorded at LLNL in the Spring of 1994 indicated that obtaining high quality reflection images below the vadose zone, yet shallower that 50 m, would require an expensive, very finely sampled survey ({lt} 1 m receiver spacing). Extensive image processing of the LLNL 2-D test line indicated that the only reliable reflection was from the top of the water table. Surprisingly, these results were very different than recent 3-D seismic work recorded at other sites, where high quality, high frequency surface (up to 300 Hz) reflection images were obtained as shallow as 20m. We believe that the differences are primarily due to the comparatively deep vadose zone at LLNL (15 to 30m) as compared to 0-5m at other sites. The thick vadose zone attenuates the reflection signals, particularly at the high frequencies (above 100 @). In addition, the vadose zone …

Date: January 29, 1997

Creator: Bainer, R.; Rector, J. & Milligan, P.

Object Type: Report

System: The UNT Digital Library