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Texas Statewide School Bus Accidents: Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that directly or indirectly involved school buses in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Pedestrian Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved pedestrians in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Truck Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved trucks in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Tractor Trailer Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved tractor trailers in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Train Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved trains in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Motorcycle Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved motorcycles in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Military Driver Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents involving military drivers in Texas during 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Moped Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved motorcycles in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Railroad Crossing Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that happened at railroad crossings in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Pick-Up [Truck] Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved pickup trucks in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Pedalcyclist Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved pedalcyclists in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Single Vehicle Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents involving only one vehicle in Texas during 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Summary of Multi-Vehicle Involved Accidents in the State of Texas for Calendar Year 1999
Annual report providing tabular statistical information about motor vehicle accidents that involved more than one vehicle in Texas during calendar year 1999, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.
Date:
February 29, 2000
Creator:
Texas. Department of Public Safety. Accident Records Bureau.
Object Type:
Report
System:
The Portal to Texas History
Key texas laws & resources for people with disabilities
Report about the rights and resources available to people with disabilities in Texas.
Date:
November 29, 2000
Creator:
Texas Governor's Committee on People with Disabilities
Object Type:
Report
System:
The Portal to Texas History
Comparison of Varve and 14C Chronologies from Steel Lake, Minnesota, USA
Annually laminated sediments (varves) offer an effective means of acquiring high-quality paleoenvironmental records. However, the strength of a varve chronology can be compromised by a number of factors, such as missing varves, ambiguous laminations, and human counting error. We assess the quality of a varve chronology for the last three millennia from Steel Lake, Minnesota, through comparisons with nine AMS {sup 14}C dates on terrestrial plant macrofossils from the same core. These comparisons revealed an overall 8.4% discrepancy, primarily because of missing/uncountable varves within two stratigraphic intervals characterized by low carbonate concentrations and obscure laminations. Application of appropriate correction factors to these two intervals results in excellent agreement between the varve and {sup 14}C chronologies. These results, together with other varve studies, demonstrate that an independent age-determination method, such as {sup 14}C dating, is usually necessary to verify, and potentially correct, varve chronologies.
Date:
December 29, 2004
Creator:
Tian, J; Brown, T A & Hu, F S
Object Type:
Article
System:
The UNT Digital Library
Plan for Developing and Implementing the LLNL Plutonium Facility and Packaging Program
The LLNL Plutonium Facility uses glove boxes for performing operations involving special nuclear materials (SNM) that for the most part are not connected to each other. Having standalone glove boxes mandates bag-in and bag-out operations to provide personnel safety in material transfers. The use of inexpensive disposable primary and secondary containers (i.e., food pack and paint cans) decreases operational risks by reducing glove box transfers. Typically, containers consist of produce cans, paint cans, lard cans, and egg cans; however, some cans with bolted flanges have been used for protection from oxidation or to reduce dose to the handler. The lard cans and egg cans are slip lid cans and have predominantly been used for the outermost containment, or secondary can, in the packaging configuration. For non-weapon parts the packaging has generally been, from the inner most container to the outside container as (1) the primary can, (2) a bag-out bag, (3) a poultry bag, and (4) a secondary can. This system has evolved over many years and has proven to be effective. During FY2002 through FY2004, the ''Legacy'' material projects at LLNL inspected, repackaged and processed (if necessary), approximately 1500 items, which translates to at least 3000 containers (primary and …
Date:
March 29, 2005
Creator:
Dodson, K E; Burch, J G; Krikorian, O H & Riley, D C
Object Type:
Report
System:
The UNT Digital Library
NOVEL INTEGRATING SOLID STATE DETECTOR WITH SEGMENTATION FOR SCANNING TRANSMISSION SOFT X-RAY MICROSCOPY.
An integrating solid state detector with segmentation has been developed that addresses the needs in scanning transmission x-ray microscopy below 1 keV photon energy. The detector is not cooled and can be operated without an entrance window which leads to a total photon detection efficiency close to 100%. The chosen segmentation with 8 independent segments is matched to the geometry of the STXM to maximize image mode flexibility. In the bright field configuration for 1 ms integration time and 520 eV x-rays the rms noise is 8 photons per integration.
Date:
July 29, 2001
Creator:
FESER,M. JACOBSEN,C. REHAK,P. DE GERONIMO,G. HOLL,P. STUDER,L.
Object Type:
Article
System:
The UNT Digital Library
Cluster Form Factor Calculation in the Ab Initio No-Core Shell Model
None
Date:
July 29, 2004
Creator:
Navratil, P
Object Type:
Article
System:
The UNT Digital Library
Influences on the Height of the Stable Boundary Layer as seen in Large-Eddy Simulations
Numerical weather prediction (NWP) models and atmospheric dispersion models rely on parameterizations of planetary boundary layer height. In the case of a stable boundary layer, errors in boundary layer height estimation can result in gross errors in boundary-layer evolution and in prediction of turbulent mixing within the boundary layer. We use large-eddy simulations (LES) of moderately stable boundary layers to characterize the effects of various physical processes on stable boundary layers. The stable boundary layer height is assumed to be a function of surface friction velocity, geostrophic wind, Monin-Obukhov length, and the strength of the temperature inversion atop the stable boundary layer. This temperature inversion induces gravity waves with a frequency determined by the strength of the temperature inversion.
Date:
March 29, 2004
Creator:
Kosovic, B & Lundquist, J K
Object Type:
Article
System:
The UNT Digital Library
Spheromak formation studies in SSPX
We present results from the Sustained Spheromak Physics Experiment (SSPX) at LLNL, which has been built to study energy confinement in spheromak plasmas sustained for up to 2 ms by coaxial DC helicity injection. Peak toroidal currents as high as 600kA have been obtained in the 1m dia. (0.23m minor radius) device using injection currents between 200-400kA; these currents generate edge poloidal fields in the range of 0.2-0.4T. The internal field and current profiles are inferred from edge field measurements using the CORSICA code. Density and impurity control is obtained using baking, glow discharge cleansing, and titanium gettering, after which long plasma decay times ({tau} {ge} 1.5ms) are observed and impurity radiation losses are reduced from {approx}50% to <20% of the input energy. Thomson scattering measurements show peaked electron temperature and pressure profiles with T{sub e} (0){approx}120eV and {beta}{sub e}{approx}7%. Edge field measurements show the presence of n=1 modes during the formation phase, as has been observed in other spheromaks. This mode dies away during sustainment and decay so that edge fluctuation levels as low as 1% have been measured. These results are compared with numerical simulations using the NIMROD code.
Date:
September 29, 2000
Creator:
Hill, D. N.; Bulmer, R. H.; Cohen, B. L.; Hooper, E. B.; LoDestro, L. L.; Mattor, N. et al.
Object Type:
Article
System:
The UNT Digital Library
Timing is Everything:The Boon and Bane of 14C Geochronology
There are underappreciated limitations of the conversion of {sup 14}C-ages to the fixed, calendrical time-scale that bear directly upon our understanding of the dynamic climate system, or the relationship between the collapse of one civilization and it's neighbor's. In this paper we present a quantitative assessment of the limits of {sup 14}C-geochronology and calibration onto the absolute calendrical time-scale over the Holocene. We take into account not only the inherent limitations of the {sup 14}C-calendar calibration curve, but also analytical uncertainties.
Date:
October 29, 2004
Creator:
Guilderson, T; Guilderson, T; Reimer, P J & Brown, T
Object Type:
Article
System:
The UNT Digital Library
The Response of Plant Carbohydrates to Elevated CO2: What Have We Learnt From Face Studies?
Atmospheric CO{sub 2} concentration ([CO{sub 2}]) is expected to rise from a current level of 372 {micro}mol mol{sup -1} to about 550 {micro}mol mol{sup -1} by the middle of the century (Prentice 2001). Accumulation of foliar carbohydrates is one of the most pronounced and universal changes observed in the leaves of C{sub 3} plants grown at elevated [CO{sub 2}] (Drake et al 1997). Carbohydrates are the product of photosynthetic cells and the substrate for sink metabolism. However, carbohydrates are not just substrates, changes in the composition and pool size of foliar carbohydrates have the potential to communicate source-sink balance and a role for carbohydrates in the regulation of the expression of many plant genes is well established (Koch 1996). Importantly, carbohydrate feedback is thought to be the mechanism through which long-term exposure to elevated [CO{sub 2}] leads to a reduction in carboxylation capacity (Rogers et a1 199S, Long et al 2004). Foliar sugar content has recently been linked to an increased susceptibility of soybeans to insect herbivory (Hamilton et al submitted). In addition increases in the C:N ratio of leaf litter of plants grown at elevated [CO{sub 2}] has been implicated in negative feedbacks on ecosystem productivity (Oechel et al …
Date:
August 29, 2004
Creator:
Rogers, A.; Ainsworth, E. A.; Bernacchi, C. J.; Gibon, Y.; Stitt, M. & Long, S. P.
Object Type:
Article
System:
The UNT Digital Library
FINAL CLOSURE PLAN SURFACE IMPOUNDMENTS CLOSURE, SITE 300
Lawrence Livermore National Laboratory of the University of California (LLNL) operates two Class II surface impoundments that store wastewater that is discharged from a number of buildings located on the Site 300 Facility (Site 300). The wastewater is the by-product of explosives processing. Reduction in the volume of water discharged from these buildings over the past several years has significantly reduced the wastewater storage needs. In addition, the impoundments were constructed in 1984, and the high-density polyethylene (HDPE) geomembrane liners are nearing the end of their service life. The purpose of this project is to clean close the surface impoundments and provide new wastewater storage using portable, above ground storage tanks at six locations. The tanks will be installed prior to closure of the impoundments and will include heaters for allowing evaporation during relatively cool weather. Golder Associates (Golder) has prepared this Final Closure Plan (Closure Plan) on behalf of LLNL to address construction associated with the clean closure of the impoundments. This Closure Plan complies with State Water Resources Control Board (SWRCB) Section 21400 of the California Code of Regulations Title 27 (27 CCR {section}21400). As required by these regulations and guidance, this Plan provides the following information: (1) …
Date:
September 29, 2004
Creator:
Lane, J E; Scott, J E & Mathews, S E
Object Type:
Report
System:
The UNT Digital Library
White Paper on Institutional Capability Computing Requirements
This paper documents the need for a rapid, order-of-magnitude increase in the computing infrastructure provided to scientists working in the unclassified domains at Lawrence Livermore National Laboratory. This proposed increase could be viewed as a step in a broader strategy linking hardware evolution to applications development that would take LLNL unclassified computational science to a position of distinction, if not preeminence, by 2006. We believe that it is possible for LLNL institutional scientists to gain access late this year to a new system with a capacity roughly 80% to 200% that of the 12-TF/s (twelve trillion floating-point operations per second) ASCI White system for a cost that is an order of magnitude lower than the White system. This platform could be used for first-class science-of-scale computing and for the development of aggressive, strategically chosen applications that can challenge the near PF/s (petaflop/s, a thousand trillion floating-point operations per second) scale systems ASCI is working to bring to the LLNL unclassified environment in 2005. As the distilled scientific requirements data presented in this document indicate, great computational science is being done at LLNL--the breadth of accomplishment is amazing. The computational efforts make it clear what a unique national treasure this Laboratory …
Date:
January 29, 2002
Creator:
Kissel, Lynn; McCoy, Michael G. & Seager, Mark K.
Object Type:
Report
System:
The UNT Digital Library