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572 Matching Results
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Air Pollution and Greenhouse Gas Emissions from Ships
This report provides information regarding pollution from ships and port facilities; discusses some of the measures being implemented and considered by local, state, and federal regulatory agencies; discusses the efforts to ratify and to strengthen Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL); and describes legislation in Congress to control emissions from ships by amending the Clean Air Act (CAA).
Date:
February 24, 2009
Creator:
McCarthy, James E.
Object Type:
Report
System:
The UNT Digital Library
Air Pollution and Greenhouse Gas Emissions from Ships
This report provides information regarding pollution from ships and port facilities; discusses some of the measures being implemented and considered by local, state, and federal regulatory agencies; discusses the efforts to ratify and to strengthen Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL); and describes legislation in Congress to control emissions from ships by amending the Clean Air Act (CAA).
Date:
February 24, 2009
Creator:
McCarthy, James E.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 111, No. 164, Ed. 1 Tuesday, February 24, 2009
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 24, 2009
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Analysis of systematic errors in lateral shearing interferometry for EUV optical testing
Lateral shearing interferometry (LSI) provides a simple means for characterizing the aberrations in optical systems at EUV wavelengths. In LSI, the test wavefront is incident on a low-frequency grating which causes the resulting diffracted orders to interfere on the CCD. Due to its simple experimental setup and high photon efficiency, LSI is an attractive alternative to point diffraction interferometry and other methods that require spatially filtering the wavefront through small pinholes which notoriously suffer from low contrast fringes and improper alignment. In order to demonstrate that LSI can be accurate and robust enough to meet industry standards, analytic models are presented to study the effects of unwanted grating and detector tilt on the system aberrations, and a method for identifying and correcting for these errors in alignment is proposed. The models are subsequently verified by numerical simulation. Finally, an analysis is performed of how errors in the identification and correction of grating and detector misalignment propagate to errors in fringe analysis.
Date:
February 24, 2009
Creator:
Miyakawa, Ryan; Naulleau, Patrick & Goldberg, Kenneth A.
Object Type:
Article
System:
The UNT Digital Library
Bahrain: Reform, Security, and U.S. Policy
This report discusses the current state of Bahrain, which has undergone substantial political reforms since the late 1990s, but which still suffers from tension between the Shiite majority and the Sunni-led government. This report focuses particularly on Bahrain's relationship with Iran and Bahrain's relationship with the United States.
Date:
February 24, 2009
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
[Barren Field Shutter]
Photograph of the barren field building's shutter from inside. The wall is eroded and has two pieces of reinforcing bars in the window horizontally and vertically.
Date:
February 24, 2009
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 89, No. 55, Ed. 1 Tuesday, February 24, 2009
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 24, 2009
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 103, No. 16, Ed. 1 Tuesday, February 24, 2009
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
February 24, 2009
Creator:
Cartwright, Brian
Object Type:
Newspaper
System:
The Portal to Texas History
The Brand (Abilene, Tex.), Vol. 97, No. 10, Ed. 1 Tuesday, February 24, 2009
Bi-weekly student newspaper from Hardin-Simmons University in Abilene, Texas that includes campus news and local news of interest to students along with advertising.
Date:
February 24, 2009
Creator:
Koe, Crystal
Object Type:
Newspaper
System:
The Portal to Texas History
[Cara Walker and woman at banquet table]
A photograph of Cara Walker and another woman seated at a table for a Multicultural Center banquet event during Black History Month. They are in one of the ballrooms on the UNT campus. There are drinks and menus on the table in front of them and some small tables against the wall.
Date:
February 24, 2009
Creator:
University of North Texas. Multicultural Center.
Object Type:
Photograph
System:
The UNT Digital Library
Characterizing the Properties of Clusters of Galaxies As a Function of Luminosity and Redshift
Abstract: We report the application of the new Monte Carlo method, Smoothed Particle Inference (SPI, described in a pair of companion papers), towards analysis and interpretation of X-ray observations of clusters of galaxies with the XMM-Newton satellite. Our sample consists of publicly available well-exposed observations of clusters at redshifts z > 0.069, totaling 101 objects. We determine the luminosity and temperature structure of the X-ray emitting gas, with the goal to quantify the scatter and the evolution of the L{sub X} - T relation, as well as to investigate the dependence on cluster substructure with redshift. This work is important for the establishment of the potential robustness of mass estimates from X-ray data which in turn is essential towards the use of clusters for measurements of cosmological parameters. We use the luminosity and temperature maps derived via the SPI technique to determine the presence of cooling cores, via measurements of luminosity and temperature contrast. The L{sub X}-T relation is investigated, and we confirm that L{sub X} {proportional_to} T{sup 3}. We find a weak redshift dependence ({proportional_to} (1 + z){sup {beta}{sub LT}}, {beta}{sub LT} = 0.50 {+-} 0.34), in contrast to some Chandra results. The level of dynamical activity is established …
Date:
February 24, 2009
Creator:
Andersson, K.; Peterson, J. R.; Madejski, G. & Goobar, A.
Object Type:
Article
System:
The UNT Digital Library
[Cheylon Brown speaking at 2009 UNT Black History Month event]
A photograph of Cheylon Brown speaking at a UNT Multicultural Center event during Black History Month. She is standing behind a podium with a microphone on it and a green UNT backdrop.
Date:
February 24, 2009
Creator:
University of North Texas. Multicultural Center.
Object Type:
Photograph
System:
The UNT Digital Library
Climate Change Science: High Quality Greenhouse Gas Emissions Data are a Cornerstone of Programs to Address Climate Change
Testimony issued by the Government Accountability Office with an abstract that begins "Elevated levels of greenhouse gases in the atmosphere and the resulting effects on the earth's climate could have significant impacts in the United States and internationally. Potential impacts include a change in sea levels, ecosystems, and ice cover. The United States Congress is considering proposals to limit greenhouse gas emissions using market-based mechanisms that would place a price on emissions. Such programs would create an economic incentive for regulated entities to limit their emissions. Limiting greenhouse gas emissions requires an understanding of existing emissions as well as the development of a program to monitor, report, and verify emissions from entities that might be affected by a future regulatory program. A greenhouse gas mitigation program also requires an understanding of the numerous emissions sources and methods for calculating emissions of six major greenhouse gases--carbon dioxide, methane, nitrous oxide, and several synthetic gases. This testimony focuses on (1) the importance of quality data on emissions in the context of a program intended to limit greenhouse gas emissions, and (2) key considerations in developing reliable data on greenhouse gas emissions. This testimony is based on several prior GAO reports and a …
Date:
February 24, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Commuter Rail: Many Factors Influence Liability and Indemnity Provisions, and Options Exist to Facilitate Negotiations
A letter report issued by the Government Accountability Office with an abstract that begins "The National Railroad Passenger Corporation (Amtrak) and commuter rail agencies often share rights-of-way with each other and with freight railroads. Negotiating agreements that govern the shared use of infrastructure can be challenging, especially on issues such as liability and indemnity. As requested, this report discusses (1) the liability and indemnity provisions in agreements among passenger and freight railroads, and the resulting implications of these provisions; (2) federal and state court opinions and Surface Transportation Board (STB) decisions related to contractual liability and indemnity provisions of passenger and freight railroad agreements; (3) factors that influence the negotiations of liability and indemnity provisions among passenger and freight railroads; and (4) potential options for facilitating negotiations of liability and indemnity provisions. GAO obtained information from all existing and proposed commuter rail agencies, Amtrak, and major freight railroads through site visits or telephone interviews. GAO analyzed the liability and indemnity provisions in agreements between commuter rail agencies, Amtrak, and freight railroads. GAO also reviewed federal and state laws, STB decisions, and court cases related to liability and indemnity provisions. The Department of Transportation and STB had no comments on the …
Date:
February 24, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Conveyorized Photoresist Stripping Replacement for Flex Circuit Fabrication
A replacement conveyorized photoresist stripping system was characterized to replace the ASI photoresist stripping system. This system uses the qualified ADF-25c chemistry for the fabrication of flex circuits, while the ASI uses the qualified potassium hydroxide chemistry. The stripping process removes photoresist, which is used to protect the copper traces being formed during the etch process.
Date:
February 24, 2009
Creator:
Donahue, Megan
Object Type:
Report
System:
The UNT Digital Library
[Dancers at Black History Month event]
A photograph of dancers at a UNT Multicultural Center event during Black History Month. They are all standing with their arms raised with one knee bent to make a triangle with their legs.
Date:
February 24, 2009
Creator:
University of North Texas. Multicultural Center.
Object Type:
Photograph
System:
The UNT Digital Library
Detection of Nuclear Weapons and Materials: Science, Technologies, Observations
Nuclear weapons contain special nuclear material (SNM), which produces unique or suspect signatures that can be detected. This report seeks to help Congress understand this technology. It discusses the science of detecting nuclear weapons and materials, describes nine advanced U.S. technologies selected to illustrate the range of projects in the pipeline, and offers observations for Congress. The report does not compare technologies.
Date:
February 24, 2009
Creator:
Medalia, Jonathan
Object Type:
Report
System:
The UNT Digital Library
Development and Demonstration of Ultrafiltration Simulants
According to Bechtel National, Inc. (BNI) Test Specification 24590-PTF-TSP-RT-06-006, Rev 0, Simulant Development to Support the Development and Demonstration of Leaching and Ultrafiltration Pretreatment Processes,” simulants for boehmite, gibbsite, and filtration are to be developed that can be used in subsequent bench and integrated testing of the leaching/filtration processes for the waste treatment plant (WTP). These simulants will then be used to demonstrate the leaching process and to help refine processing conditions which may impact safety basis considerations (Smith 2006). This report documents the results of the filtration simulant development.
Date:
February 24, 2009
Creator:
Russell, Renee L.; Billing, Justin M.; Peterson, Reid A.; Rinehart, Donald E. & Smith, Harry D.
Object Type:
Report
System:
The UNT Digital Library
Electrical Signal Path Study and Component Assay for the MAJORANA N-Type Segmented Contact Detector
The purpose of the present electrical signal path study is to explore the various issues related to the deployment of highly-segmented low-background Ge detectors for the MAJORANA double-beta decay experiment. A significant challenge is to simultaneously satisfy competing requirements for the mechanical design, electrical readout performance, and radiopurity specifications from the MAJORANA project. Common to all rare search experiments, there is a very stringent limit on the acceptable radioactivity level of all the electronics components involved. Some of the findings are summarized in this report.
Date:
February 24, 2009
Creator:
Amman, Mark; Bergevin, Marc; Chan, Yuen-Dat; Detwiler, Jason A.; Fujikawa, Brian .; Lesko, Kevin T. et al.
Object Type:
Report
System:
The UNT Digital Library
[Elida Barraza Invoice]
An invoice from Elida Barraza, the Printing Services Coordinator at the Printing Services department to Mr. Stallings of $6.95 on February 24, 2009.
Date:
February 24, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Elida Barraza Invoice]
An invoice from Elida Barraza, the Printing Services Coordinator at the Printing Services department to Mr. Stallings of $11.25 on February 24, 2009.
Date:
February 24, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Elida Barraza Invoice]
An invoice from Elida Barraza, the Printing Services Coordinator at the Printing Services department to Mr. Stallings of $26.25 on February 24, 2009.
Date:
February 24, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Elida Barraza Invoice]
An invoice from Elida Barraza, the Printing Services Coordinator at the Printing Services department to Mr. Stallings of $33.75 on February 24, 2009.
Date:
February 24, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Email from Linda Allen to members]
Email from Linda Allen to members discussing protected directory for Texas Stonewall Democratic Caucus board documents.
Date:
February 24, 2009
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library