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Aerosol Chemical Characteristion on Board the Doe g1 Aircraft Using a Particle Into Liquid Sampler During the Texaqs 2000 Experiment.
Knowledge of aerosol chemical composition is key to understanding a number of properties of ambient aerosol particles including sources, size/number distribution, chemical evolution, optical properties and human health effects. Although filter based techniques have been widely used to determine aerosol chemical constituents, they generally cannot provide sufficiently fast time resolution needed to investigate sources and chemical evolution that effect aerosol chemical, size and number changes. In order to gain an ability to describe and predict the life cycles of ambient aerosols as a basis for ambient air quality control, fast and sensitive determination of the aerosol chemical composition must be made available. To help to achieve this goal, we deployed a newly developed technique, referred to as PILS (particle-into-liquid-sampler), on the DOE G1 aircraft during the 2000 Texas Air Quality Study (TexAQS 2000) to characterize the major ionic species of aerosol particles with aerodynamic size smaller than 2.5 {micro}m (PM 2.5). The results obtained are examined in the context of other simultaneously collected data for insights into the measurement capability of the PILS system.
Date:
January 13, 2001
Creator:
Lee,Y. N.; Song, Z.; Liu, Y.; Daum, P.; Weber, R.; Orsini, D. et al.
Object Type:
Article
System:
The UNT Digital Library
Aerosol Chemical Characteristion on Board the Doe g1 Aircraft Using a Particle Into Liquid Sampler During the Texaqs 2000 Experiment.
Knowledge of aerosol chemical composition is key to understanding a number of properties of ambient aerosol particles including sources, size/number distribution, chemical evolution, optical properties and human health effects. Although filter based techniques have been widely used to determine aerosol chemical constituents, they generally cannot provide sufficiently fast time resolution needed to investigate sources and chemical evolution that effect aerosol chemical, size and number changes. In order to gain an ability to describe and predict the life cycles of ambient aerosols as a basis for ambient air quality control, fast and sensitive determination of the aerosol chemical composition must be made available. To help to achieve this goal, we deployed a newly developed technique, referred to as PILS (particle-into-liquid-sampler), on the DOE G1 aircraft during the 2000 Texas Air Quality Study (TexAQS 2000) to characterize the major ionic species of aerosol particles with aerodynamic size smaller than 2.5 {micro}m (PM 2.5). The results obtained are examined in the context of other simultaneously collected data for insights into the measurement capability of the PILS system.
Date:
January 13, 2001
Creator:
Lee,Y. N.; Song, Z.; Liu, Y.; Daum, P.; Weber, R.; Orsini, D. et al.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 79, No. 48, Ed. 1 Saturday, January 13, 2001
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 13, 2001
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
[Funeral Program for Cordia Jaye Mooney, January 13, 2001]
Funeral program for Cordia Jaye (Shot) Mooney, born December 15, 1941 and died January 9, 2001. The funeral was held January 13, 2001 at Shiloh Baptist Church, officiated by Pastor Rev. Andrew Wilson. Funeral arrangements were made through the Lewis Funeral Home and she was buried in Meadowlawn Memorial Park in San Antonio, Texas.
Date:
January 13, 2001
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
Lone Star Gazette (Dublin, Tex.), Vol. 2, No. 9, Ed. 1 Saturday, January 13, 2001
Semimonthly newspaper from Dublin, Texas that includes area information on topics such as history, entertainment, reviews, and recipes along with advertising.
Date:
January 13, 2001
Creator:
Kestner, Laura
Object Type:
Newspaper
System:
The Portal to Texas History
The National Aeronautics and Space Administration's FY2001 Budget Request and FY2001-FY2002 Authorization: Description and Analysis
None
Date:
January 13, 2001
Creator:
Rowberg, Richard E. & Hatch, Erin C.
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Robert Eustace, January 13, 2001
The National Museum of the Pacific War presents an oral interview with Robert Eustace. Eustace joined the Navy in 1943 and received basic training at Camp Farragut. He received further training at photography school in Pensacola. Upon completion, he was assigned to the USS Suwannee (ACV-27) as a photographer’s mate. Eustace flew in the backseat of a Douglas SBD Dauntless divebomber throughout the war in the Pacific. On 20 October 1944 the Suwannee was attacked by Japanese planes. Eustace contends that the antiaircraft fire did more damage to their sister ship than to the planes. On the 25th the Suwanee was hit by multiple kamikaze planes. Eustace photographed the attack and then tended to the wounded. He filled in as a helmsman and got the ship back to dry dock. He returned to the war and recalls pushing damaged planes into the water at Ishigaki. He then walked through Nagasaki after it was leveled by the atomic bomb and joined the occupation forces in Yokosuka. Eustace returned home and was discharged in May 1946.
Date:
January 13, 2001
Creator:
Eustace, Robert
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Robert Eustace, January 13, 2001
The National Museum of the Pacific War presents an oral interview with Robert Eustace. Eustace joined the Navy in 1943 and received basic training at Camp Farragut. He received further training at photography school in Pensacola. Upon completion, he was assigned to the USS Suwannee (ACV-27) as a photographer’s mate. Eustace flew in the backseat of a Douglas SBD Dauntless divebomber throughout the war in the Pacific. On 20 October 1944 the Suwannee was attacked by Japanese planes. Eustace contends that the antiaircraft fire did more damage to their sister ship than to the planes. On the 25th the Suwanee was hit by multiple kamikaze planes. Eustace photographed the attack and then tended to the wounded. He filled in as a helmsman and got the ship back to dry dock. He returned to the war and recalls pushing damaged planes into the water at Ishigaki. He then walked through Nagasaki after it was leveled by the atomic bomb and joined the occupation forces in Yokosuka. Eustace returned home and was discharged in May 1946.
Date:
January 13, 2001
Creator:
Eustace, Robert
Object Type:
Text
System:
The Portal to Texas History
Pawhuska Journal-Capital (Pawhuska, Okla.), Vol. 91, No. 4, Ed. 1 Saturday, January 13, 2001
Semiweekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 13, 2001
Creator:
Gann, Sherry
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 85, No. 12, Ed. 1 Saturday, January 13, 2001
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 13, 2001
Creator:
Quinnelly, Lorrie J.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 287, Ed. 1 Tuesday, February 13, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 13, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 79, No. 79, Ed. 1 Tuesday, February 13, 2001
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 13, 2001
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 96, No. 13, Ed. 1 Tuesday, February 13, 2001
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
February 13, 2001
Creator:
Keasling, Edna & Pritchett, Melissa
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard-Herald and Heart O' Texas News (Brady, Tex.), Ed. 1 Tuesday, February 13, 2001
Semiweekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
February 13, 2001
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Criteria for Determining Element Size and Time Step for Thermal Shock Simulation
Rapid energy deposition into spallation source targets can lead to their temperature rise at enormous rates, giving rise to dynamic thermoelastic stresses. Understanding and predicting the resulting stress waves are crucial for robust design and safe operation of such devices. To simulate the thermal shock phenomenon accurately, many factors should be carefully considered, such as geometry, surface condition, energy deposition profile, equation of state, possible cavitation, viscous damping, rate-dependent constitutive equation, element size, and time step. In this paper a closed form expression for the induced stress in slender bars with distributed energy deposition has been directly derived; it is then used to test the accuracy of computed results with FEA codes. It was found that significant errors can occur unless care is taken to restrict element size and time step depending on the boundary conditions, steepness of temperature profiles and rise rate. Criteria have been proposed for determining the above two parameters. Numerical simulation with the well-established ANSYS5.5 code system showed that excellent results could be achieved if the proposed criteria are met.
Date:
February 13, 2001
Creator:
Zheng, J.
Object Type:
Article
System:
The UNT Digital Library
CST/Water Slurry Mixing and Resuspension
Crystalline Silicotitanate (CST) was selected as one of the alternatives to the In-Tank Precipitation Process (ITP) for removal of cesium from the salt waste at Savannah River Site. The proposed salt waste treatment process using CST would involve passing a filtered salt waste through a fixed bed of CST. The CST would remove the cesium from the salt waste by ion exchange and the decontaminated salt would be incorporated into the Saltstone Process. This report documents the results of investigations into the mixing and re-suspension characteristics of two 10 wt percent CST slurries.
Date:
February 13, 2001
Creator:
Baich, M. A.
Object Type:
Report
System:
The UNT Digital Library
Daily Journal (Perry, Okla.), Vol. 108, No. 31, Ed. 1 Tuesday, February 13, 2001
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 13, 2001
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Data Summary Report for Savannah River Integrator Operable Unit Fish Tissue
This report presents the results of the verification and validation of the analytical data for the Savannah River Fish (SRF) investigation. The data were validated to determine if the records conform to the technical criteria associated with definitive data.
Date:
February 13, 2001
Creator:
Craig, B.
Object Type:
Report
System:
The UNT Digital Library
ENHANCEMENT OF EQUILIBRIUMSHIFT IN DEHYDROGENATION REACTIONS USING A NOVEL MEMBRANE REACTOR
With the advances in new inorganic materials and processing techniques, there has been renewed interest in exploiting the benefits of membranes in many industrial applications. Inorganic and composite membranes are being considered as potential candidates for use in membrane-reactor configuration for effectively increasing reaction rate, selectivity and yield of equilibrium limited reactions. To investigate the usefulness of a palladium-ceramic composite membrane in a membrane reactor-separator configuration, we investigated the dehydrogenation of cyclohexane by equilibrium shift. A two-dimensional pseudo-homogeneous reactor model was developed to study the dehydrogenation of cyclohexane by equilibrium shift in a tubular membrane reactor. Radial diffusion was considered to account for the concentration gradient in the radial direction due to permeation through the membrane. For a dehydrogenation reaction, the feed stream to the reaction side contained cyclohexane and argon, while the separation side used argon as the sweep gas. Equilibrium conversion for dehydrogenation of cyclohexane is 18.7%. The present study showed that 100% conversion could be achieved by equilibrium shift using Pd-ceramic membrane reactor. For a feed containing cyclohexane and argon of 1.64 x 10{sup -6} and 1.0 x 10{sup -3} mol/s, over 98% conversion could be readily achieved. The dehydrogenation of cyclohexane was also experimentally investigated in …
Date:
February 13, 2001
Creator:
Ilias, Shamsuddin & King, Franklin G.
Object Type:
Report
System:
The UNT Digital Library
Experimental Studies on Attenuation of Pressure Waves Induced by Thermal Shocks
High magnitude pressure waves are expected in the mercury-filled Spallation Neutron Source target system. An appropriate measure is needed to protect the target system from such high pressure waves. It has been known that inclusion of devices like scattering centers in the pressure field will attenuate pressure waves by scattering waves between scattering centers. A series of experiments have been conducted to test such a concept. After verifying the concept by performing simple scoping experiments, fives series of experiments were conducted with various configuration to measure changes in sound speed and pressure amplitude with inclusion of various scattering centers. Results indicate that for the conditions of our test, no significant change in sound speed was observed; however, substantial attenuation of pressure waves was detected with scattering centers in mercury.
Date:
February 13, 2001
Creator:
Kim, S. H.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, February 13, 2001
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 13, 2001
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Fusion Materials Semiannual Progress Report for Period Ending June 30, 2000
This is the twenty-eighth in a series of semiannual technical progress reports on fusion materials. This report combines the full spectrum of research and development activities on both metallic and non-metallic materials with primary emphasis on the effects of the neutronic and chemical environment on the properties and performance of materials for in-vessel components. This effort forms one element of the materials program being conducted in support of the Fusion Energy Sciences Program of the U.S. Department of Energy. The other major element of the program is concerned with the interactions between reactor materials and the plasma and is reported separately.
Date:
February 13, 2001
Creator:
Berk, S.E.
Object Type:
Report
System:
The UNT Digital Library
Laboratory Scale Antifoam Studies for the STTPB Process
Three candidate antifoam/defoam agents were tested on a laboratory scale with simulated KTPB slurry using the proposed STTPB process precipitation, concentration, and washing steps. Conclusions are if air entrainment in the slurry is carefully avoided, little or no foam will be generated during normal operations during precipitation, concentration, and washing of the precipitate. Three candidate antifoam/defoam agents were tested on a laboratory scale with simulated KTPB slurry using the proposed STTPB process precipitation, concentration and washing steps. In all cases little or no foam formed during normal operations of precipitation, concentration and washing. Foam was produced by purposely-introducing gas sub-surface into the slurry. Once produced, the IIT B52 antifoam was effective in defoaming the slurry. In separate foam column tests, all antifoam/defoam agents were effective in mitigating foam formation and in defoaming a foamed 10 wt % insoluble solids slurry. Based on the results in this report as well as foam column studies at IIT, it is recommended that IIT B52 antifoam at the 1000 ppmV level be used in subsequent STTPB work where foaming is a concern. This study indicates that the addition of antifoam agent hinders the recovery of NaTPB during washing. Washing precipitate with no antifoam agent …
Date:
February 13, 2001
Creator:
Baich, M. A.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Sue Lovell to many Texas Human Rights Foundation members, February 13, 2001]
Letter from Sue Lovell to many different members of the Texas Human Rights Foundation discussing the Schwab Award ceremony details and changes to the date of the ceremony.
Date:
February 13, 2001
Creator:
Lovell, Sue
Object Type:
Letter
System:
The Portal to Texas History