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13.2 nm Table-Top Inspection Microscope for Extreme Ultraviolet Lithography Mask Defect Characterization
We report on a reflection microscope that operates at 13.2-nm wavelength with a spatial resolution of 55{+-}3 nm. The microscope uses a table-top EUV laser to acquire images of photolithography masks in 20 seconds.
Date:
April 7, 2009
Creator:
Brizuela, F.; Wang, Y.; Brewer, C.; Pedaci, F.; Chao, W.; Anderson, E. et al.
Object Type:
Article
System:
The UNT Digital Library
16-APR-03 Final Release of ENDF/B-V for use with LLNL Codes
The new data files were prepared in two steps. First, the ENDF/B-V database was translated to an ENDL-format ascii database. The ENDL ascii format is a point-wise tabular storage scheme where intermediate values are extracted via interpolation. Sufficient point-wise information was generated in the translation to insure an extraction tolerance of 0.1% for most of the data. The only exception is along the incident neutron energy axis of the outgoing particle energy probability density function where a 0.5% tolerance was maintained. Second, processed files were generated from the translated database. Since the translated ENDF/B-V data is in ENDL-format, the standard processing codes were used to generate the new processed data files. To the best of our knowledge, these processed data files are accurate representations of the ENDF/B-V database to within the stated tolerances. However, there are several issues that users must be aware of and they are listed in this report.
Date:
April 16, 2003
Creator:
Hill, T S; McNabb, D P; Hedstrom, G W; Beck, B & Hagmann, C A
Object Type:
Report
System:
The UNT Digital Library
[24-Hour Film Feast with Reginald Dorsey]
Video footage from The Black Academy of Arts and Letters recorded during TBAALs 2009 24-Hour Filmfeast featuring filmmaker and Dallas native Reginald Dorsey on April 18th. The footage features Dorsey along with production individuals such as a costume manager and hairstylist along with actors for a live Q&A discussion on his film "King of the Evening".
Date:
April 18, 2009
Creator:
Dorsey, Reginald T.
Object Type:
Video
System:
The UNT Digital Library
A 50-100 kWe gas-cooled reactor for use on Mars.
In the space exploration field there is a general consensus that nuclear reactor powered systems will be extremely desirable for future missions to the outer solar system. Solar systems suffer from the decreasing intensity of solar radiation and relatively low power density. Radioisotope Thermoelectric Generators are limited to generating a few kilowatts electric (kWe). Chemical systems are short-lived due to prodigious fuel use. A well designed 50-100 kWe nuclear reactor power system would provide sufficient power for a variety of long term missions. This thesis will present basic work done on a 50-100 kWe reactor power system that has a reasonable lifespan and would function in an extraterrestrial environment. The system will use a Gas-Cooled Reactor that is directly coupled to a Closed Brayton Cycle (GCR-CBC) power system. Also included will be some variations on the primary design and their effects on the characteristics of the primary design. This thesis also presents a variety of neutronics related calculations, an examination of the reactor's thermal characteristics, feasibility for use in an extraterrestrial environment, and the reactor's safety characteristics in several accident scenarios. While there has been past work for space reactors, the challenges introduced by thin atmospheres like those on Mars …
Date:
April 1, 2006
Creator:
Peters, Curtis D. (.)
Object Type:
Report
System:
The UNT Digital Library
50 years of excellence in science and engineering at the Savannah River Site
This is a collection of papers including abstracts about the celebration of 50 years of excellence in science and engineering at the Savannah River Site. The Symposium Committee invited current and former employees to nominate the innovations to be recognized. Several selection panels of experts in various technical fields reviewed 190 nominations and selected the achievements included in this proceedings. Neither the Symposium Committee nor the selection panels claim that these accomplishments are the best of the best. Instead, they believe that they typify the outstanding quality of science and engineering at the Site during its first half-century.
Date:
April 19, 2000
Creator:
Phillips, A G
Object Type:
Article
System:
The UNT Digital Library
[The $64 Tomato Edible Book]
Photograph of cake decorated as a tomato on a tray wrapped in aluminum foil at the 2007 Edible Books Festival. The edible book is titled, "The $64 Tomato."
Date:
April 2007
Creator:
Mears, Michelle M.
Object Type:
Photograph
System:
The UNT Digital Library
100 Area D4 Project Building Completion Report - July 2007 to December 2008
This report documents the decontamination, decommissioning, and demolition of the 105-NB, 163-N, 183-N, 183-NA, 183-NB, 183-NC, 184-N, 184-NA, 184-NB, 184-NC, 184-ND, 184-NE, 184-NF, 1312-N, 1330-N, 1705-N, 1705-NA, 1706-N, 1712-N, 1714-N, 1714-NA, 1714-NB, 1802-N, MO-050, MO-055, MO-358, MO-390, MO-900, MO-911, and MO-950 facilities in the 100 Area of the Hanford Site. The D4 activities for these facilities include utility disconnection, planning, characterization, engineering, removal of hazardous and radiological contaminated materials, equipment removal, decommissioning, deactivation, decontamination, demolition of the structure, and removal of the remaining slabs.
Date:
April 15, 2009
Creator:
Stankovich, M. T.
Object Type:
Report
System:
The UNT Digital Library
100% foundry compatible packaging and full wafer release and die separation technique for surface micromachined devices
A completely foundry compatible chip-scale package for surface micromachines has been successfully demonstrated. A pyrex (Corning 7740) glass cover is placed over the released surface micromachined die and anodically bonded to a planarized polysilicon bonding ring. Electrical feedthroughs for the surface micromachine pass underneath the polysilicon sealing ring. The package has been found to be hermetic with a leak rate of less than 5 x 10{sup {minus}8} atm cm{sup {minus}3}/s. This technology has applications in the areas of hermetic encapsulation and wafer level release and die separation.
Date:
April 6, 2000
Creator:
Oliver, Andrew D. & Matzke, Carolyn M.
Object Type:
Article
System:
The UNT Digital Library
100-N Area Strontium-90 Treatability Demonstration Project: Food Chain Transfer Studies for Phytoremediation Along the 100-N Columbia River Riparian Zone
Strontium-90 (90Sr) exceeds the U.S. Environmental Protection Agency’s drinking water standards for groundwater (8 picocuries/L) by as much as a factor of 1000 at several locations within the Hanford 100-N Area and along the 100-N Area Columbia River shoreline). Phytoextraction, a managed remediation technology in which plants or integrated plant/rhizosphere systems are employed to phytoextract and/or sequester 90Sr, is being considered as a potential remediation system along the riparian zone of the Columbia River as part of a treatment train that includes an apatite barrier to immobilize groundwater transport of 90Sr. Phytoextraction would employ coyote willow (Salix exigua) to extract 90Sr from the vadose zone soil and aquifer sediments (phytoextraction) and filter 90Sr (rhizofiltration) from the shallow groundwater along the riparian zone of the Columbia River. The stem and foliage of coyote willows accumulating 90Sr may present not only a mechanism to remove the contaminant but also can be viewed as a source of nutrition for natural herbivores, therefore becoming a potential pathway for the isotope to enter the riparian food chain. Engineered barriers such as large and small animal fencing constructed around the field plot will control the intrusion of deer, rodents, birds, and humans. These efforts, however, will …
Date:
April 1, 2009
Creator:
Fellows, Robert J.; Fruchter, Jonathan S. & Driver, Crystal J.
Object Type:
Report
System:
The UNT Digital Library
AN-102 Simulant Sr/TRU Precipitation and Ultrafiltration
The objective of these tests was to gather data on performance of the single-tube crossflow ultrafilter unit to de-water the simulant precipitate derived from a project approved tank 241-AN-102 simulant. Upon completion of the objectives with the approved R1 simulant, the simulant specification was changed and additional work at modified precipitation conditions was requested.
Date:
April 28, 2003
Creator:
Zamecnik, J. R.
Object Type:
Report
System:
The UNT Digital Library
105-K Basin Material Design Basis Feed Description for Spent Nuclear Fuel (SNF) Project Facilities VOL 2 Sludge
Volume 2 provides estimated chemical and radionuclide inventories of sludge currently stored within the Hanford Site's 105-K Basin This volume also provides estimated chemical and radionuclide inventories for the sludge streams expected to be generated during Spent Nuclear Fuel (SNF) Project activities.
Date:
April 5, 2000
Creator:
PEARCE, K.L.
Object Type:
Report
System:
The UNT Digital Library
200 West Area Dust Mitigation Strategies
Various strategies were developed for the purpose of mitigating respirable dust experienced at facilities in the southwest corner of the 200 West Area. These strategies focused on treatment of that portion of the dust source located within the 200 West Expansion Area. Strategies included direct shielding of the facilities via establishment of a poplar windbreak and installation of an artificial windscreen; soil stabilization via seeding of herbaceous plants, soil fixatives, straw crimping, straw blankets, gravel mulches, drift fences, baled straw, and living fences; and various irrigation systems that would function both to water seeded herbs and to suppress dust.
Date:
April 12, 2001
Creator:
Sackschewsky, Michael R. & Becker, James M.
Object Type:
Report
System:
The UNT Digital Library
244-CR Vault Interim Stabilization Project Plan
The 244-CR Vault is a two-level, multi-cell structure of reinforced concrete constructed below grade. The lower cell contains four individual compartments, each containing a steel process storage tank and equipped with a concrete sump. The upper cell contains the piping and support equipment, and has two compartments for each of the tanks. The ''pump pit'' is accessed by the removal of concrete cover blocks, while the smaller ''riser pit'' is accessed by steel cover plates. The facility most recently was used as a double-contained receiver tank (DCRT). A DCRT is a type of waste transfer tank that together with its related equipment constitutes a short-term storage area for liquid waste and has a pump pit for waste transfer operations. This vault most recently was used for short-term storage and waste routing for saltwell liquid pumped from the 241-C Tank Farm in the 200 East Area. Waste transfer lines are connected inside the pump pit by a jumper installed between connecting nozzles. An active ventilation system is in operation at the 244-CR vault. Ventilation supply air enters the upper vault section through an inlet header with some leakage through the spaces between the cell cover blocks. The upper and lower vaults …
Date:
April 25, 2000
Creator:
PARKMAN, D.B.
Object Type:
Report
System:
The UNT Digital Library
300 Area D4 Project 1st Quarter Fiscal Year 2006 Building Completion Report
This report documents the deactivation, decontamination, decommissioning, and demolition of the MO-052, 3225, 334, 334A, and 334-TF Buildings in the 300 Area of the Hanford Site. The D4 of these facilities included characterization, engineering, removal of hazardous and radiologically contaminated materials, equipment removal, utility disconnection, deactivation, decontamination, demolition of the structure, and stabilization or removal of the remaining slab and foundation as appropriate.
Date:
April 20, 2006
Creator:
Smith, David S.
Object Type:
Report
System:
The UNT Digital Library
300 Area IFC Site and Data Management
This report presents site and data management of 300 Area IFC.
Date:
April 19, 2007
Creator:
Freshley, Mark
Object Type:
Presentation
System:
The UNT Digital Library
The 300 Area Integrated Field Research Challenge Quality Assurance Project Plan
Pacific Northwest National Laboratory and a group of expert collaborators are using the U.S. Department of Energy Hanford Site 300 Area uranium plume within the footprint of the 300-FF-5 groundwater operable unit as a site for an Integrated Field-Scale Subsurface Research Challenge (IFRC). The IFRC is entitled Multi-Scale Mass Transfer Processes Controlling Natural Attenuation and Engineered Remediation: An IFRC Focused on the Hanford Site 300 Area Uranium Plume Project. The theme is investigation of multi-scale mass transfer processes. A series of forefront science questions on mass transfer are posed for research that relate to the effect of spatial heterogeneities; the importance of scale; coupled interactions between biogeochemical, hydrologic, and mass transfer processes; and measurements/approaches needed to characterize and model a mass transfer-dominated system. This Quality Assurance Project Plan provides the quality assurance requirements and processes that will be followed by the 300 Area IFRC Project. This plan is designed to be used exclusively by project staff.
Date:
April 29, 2009
Creator:
Fix, N. J.
Object Type:
Report
System:
The UNT Digital Library
300 Area Liquid Effluent Facilities (LEF) Authorization Envelope
The purpose of this document is to establish the facility Authorization Envelope (AE) for the 300 Liquid Effluent Facilities (LEP )Project and identify the requirements related to the maintenance of the AE as Specified in HNF-PRO-2701, Authorization Envelope and Authorization Agreement. The 300 LEF Project consists of two separate facilities operating under one management organization. They are the 310 Facility and the 340 Facility. The AE documents the limits of operations for all 300 LEF Project activities.
Date:
April 7, 2000
Creator:
WRIGHT, E.J. & STORDEUR, R.T.
Object Type:
Report
System:
The UNT Digital Library
512-S Facility, Actinide Removal Process Radiological Design Summary Report
This report contains top-level requirements for the various areas of radiological protection for workers. Detailed quotations of the requirements for applicable regulatory documents can be found in the Radiological Design Summary Report Implementation Guide. For the purposes of demonstrating compliance with these requirements, per Engineering Standard 01064, ''shall consider / shall evaluate'' indicates that the designer must examine the requirement for the design and either incorporate or provide a technical justification as to why the requirement is not incorporated. This report describes how the Building 512-S, Actinide Removal Process meets the required radiological design criteria and requirements based on 10CFR835, DOE Order 420.1A, WSRC Manual 5Q and various other DOE guides and handbooks. The analyses supporting this Radiological Design Summary Report initially used a source term of 10.6 Ci/gallon of Cs-137 as the basis for bulk shielding calculations. As the project evolved, the source term was reduced to 1.1 Ci/gallon of Cs-137. This latter source term forms the basis for later dose rate evaluations.
Date:
April 21, 2004
Creator:
Nathan, S.J.
Object Type:
Report
System:
The UNT Digital Library
S. 852: The Fairness in Asbestos Injury Resolution Act of 2005
From Summary: "This report provides an overview of S. 852, the Fairness in Asbestos Injury Resolution (FAIR) Act of 2005. The bill would largely remove asbestos claims from the courts in favor of the administrative process set out in the bill. The bill would establish the Office of Asbestos Disease Compensation to award damages to asbestos claimants on a no-fault basis from the Asbestos Injury Claims Resolution Fund."
Date:
April 26, 2005
Creator:
Brooks, Nathan
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 29, No. 23, Ed. 1 Friday, April 7, 2000
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 7, 2000
Creator:
Steele, Janet
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 29, No. 24, Ed. 1 Friday, April 14, 2000
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 14, 2000
Creator:
Steele, Janet
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 29, No. 25, Ed. 1 Friday, April 21, 2000
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 21, 2000
Creator:
Steele, Janet
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 29, No. 26, Ed. 1 Friday, April 28, 2000
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 28, 2000
Creator:
Steele, Janet
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 30, No. 22, Ed. 1 Friday, April 6, 2001
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 6, 2001
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History