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[News Script: United Fund]
Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about the Tarrant County United Fund hosting a luncheon in Fort Worth, Texas.
Date:
August 31, 1972, 6:00 p.m.
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Script
System:
The UNT Digital Library
Low frequency dynamics of CO/Cu-breakdown of Born-Oppenheimer approximation
Synchrotron infrared studies of adsorbates on surfaces offer the possibility of probing low frequency vibrational modes and dynamics at high resolution (1 cm{sup {minus}1}, 125 {mu}eV). Extensive experiments have been performed for ordered submonolayers of CO on low index Cu surfaces [({radical}3 {times} {radical}3)R30{degree} CO/Cu(1ll), c(2 {times} 2) CO/Cu(100) and (1 {times} 2) CO/Cu(l10)], in the 100-2500 cm{sup {minus}1} ({approximately}12.5 {minus} 312.5 MeV) range. These are the first IR experiments to directly probe the adsorbate-substrate vibrations for this system. In addition, however, several surprising features are observed including the dipole-forbidden hindered rotation and an unexpected broadband absorption. Two theories have been motivated by this work, and will be compared to our experimental results. The first theory is a cluster calculation by Head-Gordon and Tully, which takes into account the breakdown of the Born-Oppenheimer approximation and predicts lifetimes and frequencies of the vibrational modes for CO/Cu(100). Another Drude-based theory, proposed by Persson, considers the coupling of the conduction electron current to the vibrations of the adsorbates, accounting for the observation of both the broad-band absorption and dipole-forbidden peak.
Date:
December 31, 1993
Creator:
Hirschmugl, C.; Williams, G. P.; Chabal, Y. J. & Hoffmann, F. M.
Object Type:
Article
System:
The UNT Digital Library
The influence of microstructure on the mechanical behavior of silicon nitride ceramics
Elongated Si nitride grains produced during densification in a liquid phase can increase the fracture toughness, but this depends on the activation of intergranular rather than transgranular fracture. Bridging in the crack wake by elongated grains and pullout of some of these grains suggest that the crack wake mechanisms that contribute to toughening of whisker-reinforced ceramics can also operate in Si nitrides containing elongated grains. With diameters of the larger elongated grains approaching 9 {mu}m, strengths > 800 MPa have been achieved along with Weibull moduli, but clustering of these larger elongated grains must be avoided. Fatigue of these toughened Si nitrides is influenced by silicate grain boundary phases. Design of toughened Si nitrides must consider effects of silicate phase composition and content on fatigue and creep. 8 figs, 18 refs.
Date:
December 31, 1992
Creator:
Becher, P. F.; Lin, H. T.; Hwang, S. L.; Hoffmann, M. J. & Chen, I-Wei
Object Type:
Article
System:
The UNT Digital Library
Application of Empore{trademark} disk technology to environmental radiochemical analysis
The costs associated with environmental restoration and waste management at both government and private facilities are burdensome, and continue to grow. The Department of Energy estimates that over one million samples, many containing radioactive components, will be analyzed per annum to support remediation programs at its 4000 sites. The development and implementation of new analytical technologies can significantly reduce the high costs associated with these programs. Disk solid-phase extraction technology has been proven to be highly effective for sample preparation in the analysis of organic compounds, waste waters, and other aqueous samples. Disk technology significantly improves sample throughput, while reducing secondary waste and costs. Moreover, many of the hazardous chemicals associated with traditional procedures are eliminated. This technology may be readily automated and lends itself to field applications. Through a Cooperative Research and Development Agreement, the 3M Company and Argonne National Laboratory are expanding this technology to address sample preparation and recovery of radionuclides from aqueous samples, i.e., surface, ground, and drinking waters. Disks have been developed which demonstrate high selectivity and great affinity for important radionuclides, including {sup 99}Tc, {sup 89/90}Sr, and {sup 226/228}Ra.
Date:
December 31, 1995
Creator:
Smith, L. L.; Orlandini, K. A.; Alvarado, J. S.; Hoffmann, K. M.; Seely, D. C. & Shannon, R. T.
Object Type:
Article
System:
The UNT Digital Library
Pion-Kaon correlations in central Au+Au collisions at {radical}(s{sub NN}) = 130 GeV
No abstract prepared.
Date:
July 31, 2003
Creator:
Adams, J.; Adler, C.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Object Type:
Article
System:
The UNT Digital Library
Multi-strange baryon production in Au-Au collisions at sqrt(sNN) = 130 GeV
The transverse mass spectra and mid-rapidity yields for {Xi}s and {Omega}s plus their anti-particles are presented. The 10% most central collision yields suggest that the amount of multi-strange particles produced per produced charged hadron increases from SPS to RHIC energies. A hydrodynamically inspired model fit to the spectra, which assumes a thermalized source, seems to indicate that these multi-strange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to {pi}, K, p and {Lambda}s.
Date:
July 31, 2003
Creator:
Adams, J.; Adler, C.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Object Type:
Article
System:
The UNT Digital Library
Strange Particle Production in $p+p$ Collisions at $\sqrt{s}$= 200GeV
We present strange particle spectra and yields measured atmid-rapidity in sqrt text s=200 GeV proton-proton (p+p) collisions atRHIC. We find that the previously observed universal transverse mass(mathrm mT \equiv\sqrt mathrm p_T 2+\mathrm m2) scaling of hadronproduction in p+p collisions seems to break down at higher \mt and thatthere is a difference in the shape of the \mt spectrum between baryonsand mesons. We observe mid-rapidity anti-baryon to baryon ratios nearunity for Lambda and Xi baryons and no dependence of the ratio ontransverse momentum, indicating that our data do not yet reach thequark-jet dominated region. We show the dependence of the mean transversemomentum (\mpt) on measured charged particle multiplicity and on particlemass and infer that these trends are consistent with gluon-jet dominatedparticle production. The data are compared to previous measurements fromCERN-SPS, ISR and FNAL experiments and to Leading Order (LO) and Next toLeading order (NLO) string fragmentation model predictions. We infer fromthese comparisons that the spectral shapes and particle yields from $p+p$collisions at RHIC energies have large contributions from gluon jetsrather than quark jets.
Date:
July 31, 2006
Creator:
Abelev, B. I.; Adams, J.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Object Type:
Article
System:
The UNT Digital Library
USE OF SONICATION FOR IN-WELL SOFTENING OF SEMIVOLATILE ORGANIC COMPOUNDS
This project investigates the in-situ degradation of semivolatile organic compounds (SVOCs) and volatile organic compounds (VOCs) using in-well sonication, in-well vapor stripping, and bioremediation. Pretreating groundwaters with sonication techniques in-situ would form VOCs that can be effectively removed by in-well vapor stripping and bioremediation. The mechanistic studies focus on the coupling of megasonics and ultrasonics to ''soften'' (i.e., partially degrade) the SVOCs; oxidative reaction mechanism studies; surface corrosion studies (on the reactor walls/well); enhancement due to addition of oxidants, quantification of the hydroxyl radical formation; identification/quantification of degradation products; volatility/degradability of the treated waters; development of a computer simulation model to describe combined in-well sonication/in-well vapor stripping/bioremediation; systems analysis/economic analysis; large laboratory-scale experiment verification; and field demonstration of the integrated technology. Benefits of this approach include: (1) Remediation is performed in-situ; (2) The treatment systems complement each other; their combination can drastically reduce or remove SVOCs and VOCs; (3) Ability to convert hard-to-degrade organics into more volatile organic compounds; (4) Ability to remove residual VOCs and ''softened'' SVOCs through the combined action of in-well vapor stripping and biodegradation; (5) Does not require handling or disposing of water at the ground surface; and (6) Cost-effective and improved efficiency, resulting in shortened …
Date:
December 31, 2000
Creator:
Peters, Robert W.
Object Type:
Report
System:
The UNT Digital Library
The Lampasas Leader. (Lampasas, Tex.), Vol. 17, No. 19, Ed. 1 Friday, March 31, 1905
Weekly newspaper from Lampasas, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 1905
Creator:
Vernor, J. E.
Object Type:
Newspaper
System:
The Portal to Texas History
With a Little Help from My Friends: Forty Years of Fruitful Chemical Collaborations
Article discussing forty years of fruitful chemical collaborations and the author's perspective on collaborative research in eight different areas of organic and theoretical chemistry.
Date:
March 31, 2011
Creator:
Borden, Weston T.
Object Type:
Article
System:
The UNT Digital Library
Mount Pleasant Daily Times (Mount Pleasant, Tex.), Vol. 11, No. 280, Ed. 1 Friday, January 31, 1930
Daily newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
January 31, 1930
Creator:
Cross, G. W.
Object Type:
Newspaper
System:
The Portal to Texas History
Complete sequences of the highly rearranged molluscan mitochondrial genomes of the scaphopod graptacme eborea and the bivalve mytilus edulis
We have determined the complete sequence of the mitochondrial genome of the scaphopod mollusk Graptacme eborea (Conrad, 1846) (14,492 nts) and completed the sequence of the mitochondrial genome of the bivalve mollusk Mytilus edulis Linnaeus, 1758 (16,740 nts). (The name Graptacme eborea is a revision of the species formerly known as Dentalium eboreum.) G. eborea mtDNA contains the 37 genes that are typically found and has the genes divided about evenly between the two strands, but M. edulis contains an extra trnM and is missing atp8, and has all genes on the same strand. Each has a highly rearranged gene order relative to each other and to all other studied mtDNAs. G. eborea mtDNA has almost no strand skew, but the coding strand of M. edulis mtDNA is very rich in G and T. This is reflected in differential codon usage patterns and even in amino acid compositions. G. eborea mtDNA has fewer non-coding nucleotides than any other mtDNA studied to date, with the largest non-coding region being only 24 nt long. Phylogenetic analysis using 2,420 aligned amino acid positions of concatenated proteins weakly supports an association of the scaphopod with gastropods to the exclusion of Bivalvia, Cephalopoda, and Polyplacophora, …
Date:
January 31, 2004
Creator:
Boore, Jeffrey L.; Medina, Monica & Rosenberg, Lewis A.
Object Type:
Article
System:
The UNT Digital Library
Brenham Daily Banner. (Brenham, Tex.), Vol. 23, No. 131, Ed. 1 Tuesday, May 31, 1898
Daily newspaper from Brenham, Texas that includes local, state and national news along with extensive advertising.
Date:
May 31, 1898
Creator:
Rankin, John G.
Object Type:
Newspaper
System:
The Portal to Texas History
The Schulenburg Sticker (Schulenburg, Tex.), Vol. 68, No. 6, Ed. 1 Thursday, August 31, 1961
Weekly newspaper from Schulenburg, Texas that includes local, state and national news along with advertising.
Date:
August 31, 1961
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The application of infrared synchrotron radiation to the study of interfacial vibrational modes
Synchrotron radiation provides an extremely bright broad-band source in the infrared which is ideally suited to the study of surface and interface vibrational modes in the range 50--3,000 cm{sup {minus}1}. Thus it covers the important range of molecule-substrate interactions, as well as overlapping with the more easily accessible near-ir region where molecular internal modes are found. Compared to standard broadband infrared sources such as globars, not only is it 1,000 times brighter, but its emittance matches the phase-space of the electrochemical cell leading to full utilization of this brightness advantage. In addition, the source is more stable even than water-cooled globars in vacuum for both short-term and long-term fluctuations. The authors summarize the properties of synchrotron radiation in the infrared, in particular pointing out the distinct differences between this and the x-ray region. They use experimental data in discussing important issues of signal to noise and address the unique problems and advantages of the synchrotron source. Thus they emphasize the important considerations necessary for developing new facilities. This analysis then leads to a discussion of phase-space matching to electrochemical cells, and to other surfaces in vacuum. Finally they show several examples of the application of infrared synchrotron radiation to surface …
Date:
December 31, 1992
Creator:
Hirschmugl, C. J. & Williams, G. P.
Object Type:
Article
System:
The UNT Digital Library
The Lampasas Daily Leader. (Lampasas, Tex.), Vol. 6, No. 1621, Ed. 1 Monday, May 31, 1909
Daily newspaper from Lampasas, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 1909
Creator:
Vernor, J. E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Lampasas Daily Leader. (Lampasas, Tex.), Vol. 11, No. 253, Ed. 1 Thursday, December 31, 1914
Daily newspaper from Lampasas, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1914
Creator:
Vernor, J. E.
Object Type:
Newspaper
System:
The Portal to Texas History
Transgenic Medicago truncatula plants obtained from Agrobacterium tumefaciens-transformed roots and Agrobacterium rhizogenes-transformed hairy roots
Article on transgenic Medicago truncatula plants obtained from Agrobacterium tumefaciens-transformed roots and Agrobacterium rhizogenes-transformed hairy roots.
Date:
January 9, 2006
Creator:
Crane, Cynthia; Wright, Elane; Dixon, R. A. & Wang, Z.-Y. (Zeng-Yu), 1963-
Object Type:
Article
System:
The UNT Digital Library
Brenham Daily Banner. (Brenham, Tex.), Vol. 27, No. 80, Ed. 1 Saturday, May 31, 1902
Daily newspaper from Brenham, Texas that includes local, state and national news along with extensive advertising.
Date:
May 31, 1902
Creator:
Rankin, John G.
Object Type:
Newspaper
System:
The Portal to Texas History
The Lampasas Daily Leader. (Lampasas, Tex.), Vol. 7, No. 1880, Ed. 1 Thursday, March 31, 1910
Daily newspaper from Lampasas, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 1910
Creator:
Vernor, J. E.
Object Type:
Newspaper
System:
The Portal to Texas History
An assessment of acid fog
Airborne particles have long been associated with adverse effects on public health, begin with the notorious air pollution disasters of several decades ago. Although H{sub 2}SO{sub 4} was identified early on as a potential causal factors during these episodes (in part because of concern for potential health effects of particle acidity per se has intensified only recently. Most of the recent aerometric research in the US on acid fog has focused on the ability of clouds and fog to deliver acidity to vegetation and ecosystems. Strong acids are characterized chemically by their pH or H{sup +} concentration. For fog, concentrations are referred to the droplet liquid content; for other (i.e., ``clear air``) aerosols, to the volume of air sampled. A useful measure of the relationship between aerosol and fog is obtained by comparing their mass concentrations on the basis of the same volume of air, by multiplying fogwater concentrations by liquid water content (LWC). This paper reviews fog measurement capability, physical properties and chemistry, and presents a simple urban airshed model which is used to simulate the evolution of fog and aerosol concentrations under urban stagnation conditions.
Date:
December 31, 1992
Creator:
Lipfert, F. W.
Object Type:
Article
System:
The UNT Digital Library
Mt. Pleasant Daily Times (Mount Pleasant, Tex.), Vol. 13, No. 12, Ed. 1 Thursday, March 31, 1932
Daily newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 1932
Creator:
Cross, G. W.
Object Type:
Newspaper
System:
The Portal to Texas History
The Lampasas Leader. (Lampasas, Tex.), Vol. 20, No. 11, Ed. 1 Friday, January 31, 1908
Weekly newspaper from Lampasas, Texas that includes local, state, and national news along with advertising.
Date:
January 31, 1908
Creator:
Vernor, J. E.
Object Type:
Newspaper
System:
The Portal to Texas History
Castroville News Bulletin (Castroville, Tex.), Vol. 32, No. 44, Ed. 1 Thursday, October 31, 1991
Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date:
October 31, 1991
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History