Partner
Oklahoma Historical Society
391
UNT Libraries Government Documents Department
321
Sterling Municipal Library
94
Carl Albert Congressional Research and Studies Center
83
Hopkins County Genealogical Society
51
Allen Public Library
47
UNT Libraries
39
Calhoun County Public Library
28
Llano County Public Library
22
UNT Libraries Special Collections
21
76 More
Collection
Texas Digital Newspaper Program
736
Oklahoma Digital Newspaper Program
484
Tocker Foundation Grant
362
Office of Scientific & Technical Information Technical Reports
271
Altus Times-Democrat
139
Sapulpa Herald
94
Sapulpa Area Newspaper Collection
94
The Baytown Sun
93
University of Oklahoma Student Newspapers
83
Chickasha Newspaper Collection
82
128 More
Degree Department
Degree Discipline
Degree Level
Country
States
Year
Month
Language
1,595 Matching Results
Results open in a new window/tab. Unexpected Results? Search the Catalog Instead.
Results:
1 - 24 of
1,595
next
Parasitic crossing at an asymmetric B factory, APIARY
Effects of parasitic crossings ( near miss'' collisions of two counter-rotating beams at unwanted positions near the IP) are studied in terms of computer simulations for an asymmetric B Factory, APIARY- 6.3d. Beams are separated horizontally at the first parasitic crossing points by about 7.6 times the horizontal rms size of the low energy beam (the larger in size of the two beams), {sigma}{sub 0x,+}. Simulations, including both the beam collision at the IP and parasitic crossings, have been performed for different separation distances, d. It is found that the ratio d/{sigma}{sub 0x,+} is a good scaling parameter of beam blowup behavior. The results show that beam blowup due to the parasitic crossings is diminished for d {ge} 7{sigma}{sub 0x,+}, in agreement with the bunch separation experiment at CESR. Thus, the nominal separation 7.6 {sigma}{sub 0x,+} turns out to be acceptable, but with only a small margin. Some methods to mitigate the effects of the parasitic crossings are discussed. 3 refs. , 5 figs., 2 tabs.
Date:
May 1, 1991
Creator:
Chin, Y. H.
Object Type:
Article
System:
The UNT Digital Library
Illustrations of the Birds of California, Texas, Oregon, British and Russian America
Re-print of a field guide to different species of birds in North America, including illustrations of some birds, also listed in Appendix II. Index begins on page 293.
Date:
1991
Creator:
Cassin, John, 1813-1869
Object Type:
Book
System:
The Portal to Texas History
Quaternary tectonics and basin history of Pahrump and Stewart Valleys, Nevada and California
The Pahrump fault system is an active fault system located in Pahrump and Stewart Valleys, Nevada and California, in the southern part of the Basin and Range Province. This system is 50 km long by 30 km wide and is comprised of three fault zones: the right-lateral East Nopah fault zone, the right-oblique Pahrump Valley fault zone, and the normal West Spring Mountains fault zone. All three zones have geomorphic evidence for late Quaternary activity. Analysis of active fault patterns and seismic reflection lines suggests that the Pahrump basin has had a two-stage genesis, an early history associated with a period of low angle detachment faulting probably active 10-15 Ma, and a more recent history related to the present dextral shear system, probably active post-4 Ma.
Date:
May 1, 1991
Creator:
Hoffard, Joanne L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Neotectonics of the southern Amargosa Desert, Nye County, Nevada and Inyo County, California
A complex pattern of active faults occurs in the southern Amargosa Desert, southern Nye, County, Nevada. These faults can be grouped into three main fault systems: (1) a NE-striking zone of faults that forms the southwest extension of the left-lateral Rock Valley fault zone, in the much larger Spotted Range-Mine Mountain structural zone, (2) a N-striking fault zone coinciding with a NNW-trending alignment of springs that is either a northward continuation of a fault along the west side of the Resting Spring Range or a N-striking branch fault of the Pahrump fault system, and (3) a NW-striking fault zone which is parallel to the Pahrump fault system, but is offset approximately 5 km with a left step in southern Ash Meadows. These three fault zones suggest extension is occurring in an E-W direction, which is compatible with the {approximately}N10W structural grain prevalent in the Death Valley extensional region to the west.
Date:
May 1, 1991
Creator:
Donovan, D.E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Roles of repetitive sequences
The DNA of higher eukaryotes contains many repetitive sequences. The study of repetitive sequences is important, not only because many have important biological function, but also because they provide information on genome organization, evolution and dynamics. In this paper, I will first discuss some generic effects that repetitive sequences will have upon genome dynamics and evolution. In particular, it will be shown that repetitive sequences foster recombination among, and turnover of, the elements of a genome. I will then consider some examples of repetitive sequences, notably minisatellite sequences and telomere sequences as examples of tandem repeats, without and with respectively known function, and Alu sequences as an example of interspersed repeats. Some other examples will also be considered in less detail.
Date:
December 31, 1991
Creator:
Bell, G. I.
Object Type:
Article
System:
The UNT Digital Library
Quaternary tectonics and basin history of Pahrump and Stewart Valleys, Nevada and California. [Yucca Mountain Project]
The Pahrump fault system is an active fault system located in Pahrump and Stewart Valleys, Nevada and California, in the southern part of the Basin and Range Province. This system is 50 km long by 30 km wide and is comprised of three fault zones: the right-lateral East Nopah fault zone, the right-oblique Pahrump Valley fault zone, and the normal West Spring Mountains fault zone. All three zones have geomorphic evidence for late Quaternary activity. Analysis of active fault patterns and seismic reflection lines suggests that the Pahrump basin has had a two-stage genesis, an early history associated with a period of low angle detachment faulting probably active 10-15 Ma, and a more recent history related to the present dextral shear system, probably active post-4 Ma.
Date:
May 1, 1991
Creator:
Hoffard, J.L. (Nevada Univ., Reno, NV (United States))
Object Type:
Report
System:
The UNT Digital Library
Roles of repetitive sequences
The DNA of higher eukaryotes contains many repetitive sequences. The study of repetitive sequences is important, not only because many have important biological function, but also because they provide information on genome organization, evolution and dynamics. In this paper, I will first discuss some generic effects that repetitive sequences will have upon genome dynamics and evolution. In particular, it will be shown that repetitive sequences foster recombination among, and turnover of, the elements of a genome. I will then consider some examples of repetitive sequences, notably minisatellite sequences and telomere sequences as examples of tandem repeats, without and with respectively known function, and Alu sequences as an example of interspersed repeats. Some other examples will also be considered in less detail.
Date:
January 1, 1991
Creator:
Bell, G.I.
Object Type:
Article
System:
The UNT Digital Library
International workshop of chromosome 19
This document summarizes the workshop on physical and genetic mapping of chromosome 19. The first session discussed the major disease loci found on the chromosome. The second session concentrated on reference families, markers and linkage maps. The third session concentrated on radiation hybrid mapping, somatic cell hybrid panels, macro restriction maps and YACs, followed by cDNA and long range physical maps. The fourth session concentrated on compiling consensus genetic and physical maps as well as discussing regions of conflict. The final session dealt with the LLNL cosmid contig database and comparative mapping of homologous regions of the human and mouse genomes, and ended with a discussion of resource sharing. 18 refs., 2 figs. (MHB)
Date:
September 16, 1991
Creator:
Pericak-Vance, M.A. (Duke Univ. Medical Center, Durham, NC (United States). Div. of Neurology) & Carrano, A.J. (Lawrence Livermore National Lab., CA (United States))
Object Type:
Article
System:
The UNT Digital Library
The human genome project
The Human Genome Project will obtain high-resolution genetic and physical maps of each human chromosome and, somewhat later, of the complete nucleotide sequence of the deoxyribonucleic acid (DNA) in a human cell. The talk will begin with an extended introduction to explain the Project to nonbiologists and to show that map construction and sequence determination require extensive computation in order to determine the correct order of the mapped entities and to provide estimates of uncertainty. Computational analysis of the sequence data will become an increasingly important part of the project, and some computational challenges are described. 5 refs.
Date:
June 1, 1991
Creator:
Bell, G.I.
Object Type:
Article
System:
The UNT Digital Library
State of the Coast Report, San Diego Region: Volume 1 -- Main Report
From introduction: The major objectives of the study are to collect new data to quantify sediment sources, sinks, and transport characteristics, review historical data to quantify and interpret past shoreline changes, perform computer modelling of coastal processes, and provide public coordination and data management.
Date:
September 1991
Creator:
United States. Army. Corps of Engineers. Los Angeles District.
Object Type:
Report
System:
The UNT Digital Library
CSDP: The seismology of continental thermal regimes
The past year continued to be extremely productive following up two major breakthroughs made in the preceding year. One of the breakthroughs was the derivation of an integral equation for time- dependent power spectra, which unified all the existing theories on seismic scattering including the radiative transfer theory for total energy and single-multiple scattering theories based on the ray approach. We successfully applied the method to the data from the USGS regional seismic arrays in central California, Long Valley and Island of Hawaii, and obtained convincing results on the scattering Q{sup {minus}1} and intrinsic Q{sup {minus}1} in these areas for the frequency range from 1 Hz to 20 Hz. The frequency dependence of scattering Q{sup {minus}1} is, then, interpreted in terms of random medium with continuous or discrete scatterers. The other breakthrough was the application of T-matrix formulation to the seismic scattering problem. We are currently working on 2-dimensional inclusions with high and low velocity contrast with the surrounding medium. In addition to the above two main lines of research, we were able to use so-called T-phase'' observed on the Island of Hawaii to map the Q value with a good spatial resolution. We found that we can eliminate remarkably …
Date:
May 1, 1991
Creator:
Aki, K.
Object Type:
Report
System:
The UNT Digital Library
Physical fitness training reference manual for security force personnel at fuel cycle facilities possessing formula quantities of special nuclear materials
The recommendations contained throughout this NUREG are being provided to the Nuclear Regulatory Commission (NRC) as a reference manual which can be used by licensee management as they develop a program plan for the safe participation of guards, Tactical Response Team members (TRTs), and all other armed response personnel in physical fitness training and in physical performance standards testing. The information provided in this NUREG will help licensees to determine if guards, TRTs, and other armed response personnel can effectively perform their normal and emergency duties without undue hazard to themselves, to fellow employees, to the plant site, and to the general public. The recommendations in this NUREG are similar in part to those contained within the Department of Energy (DOE) Medical and Fitness Implementation Guide which was published in March 1991. The guidelines contained in this NUREG are not requirements, and compliance is not required. 25 refs.
Date:
September 1, 1991
Creator:
Arzino, P. A.; Caplan, C. S. & Goold, R. E. (California State Univ., Hayward, CA (United States). Foundation)
Object Type:
Report
System:
The UNT Digital Library
Plasma injection and atomic physics models for use in particle simulation codes
Models of plasma injection (creation) and charged/neutral atomic physics which are suitable for incorporation into particle simulation codes are described. Both planar and distributed source injection models are considered. Results obtained from planar injection into a collisionless plasma-sheath region are presented. The atomic physics package simulates the charge exchange and impact ionization interactions which occur between charged particles and neutral atoms in a partially-ionized plasma. These models are applicable to a wide range of problems, from plasma processing of materials to transport in the edge region of a tokamak plasma. 18 refs., 6 figs.
Date:
June 12, 1991
Creator:
Procassini, R.J. (Lawrence Livermore National Lab., CA (USA) California Univ., Berkeley, CA (USA). Electronics Research Lab.)
Object Type:
Report
System:
The UNT Digital Library
Tiger Team assessment of the Lawrence Berkeley Laboratory, Washington, DC
This report documents the results of the Department of Energy's (DOE's) Tiger Team Assessment of the Lawrence Berkeley Laboratory (LBL) conducted from January 14 through February 15, 1991. The purpose of the assessment was to provide the Secretary of Energy with the status of environment, safety, and health (ES H) programs at LBL. The Tiger Team concluded that curtailment of cessation of any operations at LBL is not warranted. However, the number and breadth of findings and concerns from this assessment reflect a serious condition at this site. In spite of its late start, LBL has recently made progress in increasing ES H awareness at all staff levels and in identifying ES H deficiencies. Corrective action plans are inadequate, however, many compensatory actions are underway. Also, LBL does not have the technical expertise or training programs nor the tracking and followup to effectively direct and control sitewide guidance and oversight by DOE of ES H activities at LBL. As a result of these deficiencies, the Tiger Team has reservations about LBL's ability to implement effective actions in a timely manner and, thereby, achieve excellence in their ES H program. 4 figs., 24 tabs.
Date:
February 1, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
APIARY B-Factory Separation Scheme
A magnetic beam-separation scheme for an asymmetric-energy B Factory based on the SLAC electron-positron collider PEP is described that has the following properties: the beams collide head-on and are separated magnetically with sufficient clearance at the parasitic crossing points and at the septum, the magnets have large beam-stay-clear apertures, synchrotron radiation produces low detector backgrounds and acceptable heat loads, and the peak {beta}-function values and contributions to the chromaticities in the IR quadrupoles are moderate.
Date:
May 3, 1991
Creator:
Garren, A. & Sullivan, M.
Object Type:
Report
System:
The UNT Digital Library
Apiary B-Factory separation scheme
A magnetic beam-separation scheme for an asymmetric-energy B-Factory based on the SLAC electron-positron collider PEP is described that has the following properties: the beams collide head-on and are separated magnetically with sufficient clearance at the parasitic crossing points and at the septum, the magnets have large beam-stay-clear apertures, synchrotron radiation produces low detector backgrounds and acceptable heat loads, and the peak {beta}-function values and contributions to the chromaticities in the IR quadrupoles are moderate. 8 figs., 2 tabs.
Date:
April 1, 1991
Creator:
Garren, A. & Sullivan, M.
Object Type:
Article
System:
The UNT Digital Library
First mix experiments at Nova, the LoRo series
The first series of experiments using the Nova laser to investigate mix at an interface between different materials has been completed. Mix was induced by a shock crossing the interface and initiating a Richtmyer-Meshkov instability. Both low and high Atwood number targets were used and the results compare favorably with simulations using a k{var epsilon} mix model. These experiments pave the way for new designs which should provide data needed to develop mix models with predictive capabilities. 9 refs., 8 figs.
Date:
September 12, 1991
Creator:
Rupert, V.C.
Object Type:
Article
System:
The UNT Digital Library
Linear collider IR and final focus introduction
The Linear Collider subgroup of the Accelerator Physics working group concerned itself with all aspects of the Next Linear Collider (NLC) design from the end of the accelerating structure to and through the interaction region. Within this region are: (1) a collimation section, (2) muon protection (of the detector from the collimator), (3) final focus system, (4) interaction point physics, and (5) detector masking from synchrotron radiation and beam-beam pair production. These areas of study are indicated schematically in Fig. 1. The parameters for the Next Linear Collider are still in motion, but attention has settled on a handful of parameter sets. Energies under consideration vary from 0.5 to 1.5 TeV in the center of mass, and luminosities vary from 10{sup 33} to 10{sup 34} cm{sup {minus}2}s{sup {minus}1}. To be concrete we chose as a guide for our studies the parameter sets labeled F and G, Table 1 from Palmer. These cover large and small crossing angle cases and 0.4 m to 1.8 m of free length at the interaction point.
Date:
September 1, 1991
Creator:
Irwin, J. & Burke, D.
Object Type:
Article
System:
The UNT Digital Library
High-intensity photoionization of H sub 2
A tunable, high-intensity picosecond dye laser system has been employed with electron energy analysis to investigate the dynamics of (3+1) resonance-enhanced multiphoton ionization of H{sub 2} via different vibrational levels of its B{sub 1}{Sigma}{sub u}{sup +} and C{sup 1}{Pi}{sub u} electronic states. We observe production of molecular ions in various vibrational levels, with a shift to increased population of lower vibrational states of H{sub 2}{sup +} consistent with the a.c. Stark shift of the correspondingly lower vibrational levels of the C state into resonance with the three- photon energy of the laser. Clear evidence of direct dissociation of H{sub 2} followed by single-photon ionization of the excited H atom is observed as well. Above threshold ionization of these two processes occurs readily. We also find that dissociative ionization is an increasingly important ionization pathway as the wavelength is increased. Finally, we see evidence of a new ionization pathway, which we assign to photoionization into a transient bound state created by the avoided crossing of the first repulsive electronic state of H{sub 2}{sup +}, {vert bar}2p{sigma}{sub u}, n{r angle}, with the single-photon-dressed ground state of H{sub 2}{sup +}, {vert bar}1s{sigma}{sub g},n + 1{r angle}. 6 refs., 2 figs.
Date:
May 1, 1991
Creator:
Allendorf, S.W. & Szoeke, A.
Object Type:
Article
System:
The UNT Digital Library
An Asymmetric B Factory Based on PEP
In this report we describe a design for a high-luminosity Asymmetric B Factory to be built in the PEP tunnel on the SLAC site. This proposal, a collaborative effort SLAC, LBL, and LLNL, is the culmination of more than two years of effort aimed at the design and construction of an asymmetric e{sup +}e{sup {minus}} collider capable of achieving a luminosity of L = 3 {times} 10{sup 33} cm{sup {minus}2} s{sup {minus}1}. The configuration adopted utilizes two storage rings, and electron ring operating at 9 GeV and a positron ring at 3.1 GeV, each with a circumference of 2200 m. The high-energy ring is an upgrade of the PEP storage ring at SLAC; all PEP magnets and most power supplies will be reused. The upgrade consists primarily of replacing the PEP vacuum chamber and RF system with newly designed versions optimized for the high-current environment of the B Factory. The low-energy ring will be newly constructed and will be situated atop the high-energy ring in the PEP tunnel. Utilities already installed in the PEP tunnel are largely sufficient to operate the two B Factory storage rings.
Date:
February 1, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
High Energy Physics Research. Progress Report, 1990--1991
This report discusses research on: the L3, z neutral boson experiment; the L3 detector; and the development of a SSC detector. (LSP).
Date:
December 31, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
High Energy Physics Research
This report discusses research on: the L3, z neutral boson experiment; the L3 detector; and the development of a SSC detector. (LSP).
Date:
January 1, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Conversations about electricity and the future: Findings of an international seminar and lessons from a year of surprises
In January 1990 thirty-two experts from twelve countries convened for a five-day working Seminar on the Berkeley Campus of the University of California to discuss electricity supply and demand. The participants brought with them deep and diverse backgrounds in energy issues. A major concern of the First 1990 Group on Electricity was the potential impact of electricity shortages on the environment, just at a time of growing awareness of environmental deterioration. These concerns extend from local problems to nations, regions and global impacts. Indeed, because of the importance of electricity in our lives, potential electric power shortages already foreseeable in this decade could overwhelm public concern for the environment, unless critical, long-leadtime measures are taken very soon. The First 1990 Group on Electricity's Findings and Conclusions, the thinking that led to them, and the impact of events in the intervening year form the content of this book.
Date:
June 1, 1991
Creator:
Rossin, A. D. & Fowler, K. (eds.)
Object Type:
Article
System:
The UNT Digital Library
Oil and Gas Field Code Master List 1990
This is the ninth annual edition of the Energy Information Administration's (EIA) Oil and Gas Field Code Master List. It reflects data collected through October 1990 and provides standardized field name spellings and codes for all identified oil and/or gas fields in the United States. There are 54,963 field records in this year's Oil and Gas Field Code Master List (FCML). This amounts to 467 more than in last year's report. As it is maintained by EIA, the Master List includes: Field records for each state and county in which a field resides; field records for each offshore area block in the Gulf of Mexico in which a field resides;field records for each alias field name; fields crossing state boundaries that may be assigned different names by the respective state naming authorities.
Date:
January 4, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library