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UNT Libraries Special Collections
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670
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114
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88
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63
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52
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34
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5,699
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1,440
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1,156
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837
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534
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520
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431
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332
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182
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147
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Results:
11,593 - 11,601 of
11,601
SQUID-Detected MRI in the Limit of Zero Static Field
This thesis describes an implementation of the so-called"zero-field MRI" (ZFMRI) pulse sequence, which allows for imaging in an arbitrarily low B<sub>0</sub> field. The ZFMRI sequence created an effective unidirectional gradient field by using a train of pi pulses to average out the concomitant gradient components during encoding. The signals were acquired using a low-transition temperature dc Superconducting QUantum Interference Device (low-Tc dc SQUID) coupled to a first-order axial gradiometer. The experiments were carried out in a liquid helium dewar which was magnetically shielded with a single-layer mu-metal can around the outside and a superconducting Pb can contained within the helium space. We increased the filling factor of the custom-made, double-walled Pyrex insert by placing the liquid alcohol sample, at a temperature of approximately -50 degrees C, at the center of one loop of the superconducting gradiometer, which was immersed in the helium bath.
Date:
December 14, 2009
Creator:
Kelso, Nathan Dean
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Sweetwater Reporter (Sweetwater, Tex.), Vol. 112, No. 26, Ed. 1 Monday, December 14, 2009
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
December 14, 2009
Creator:
Rodriguez, Tatiana
Object Type:
Newspaper
System:
The Portal to Texas History
U.S. International Trade: Trends and Forecasts
None
Date:
December 14, 2009
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
U.S. Postal Service: The Program for Reassessing Work Provided to Injured Employees Is Under Way, but Actions Are Needed to Improve Program Management
A letter report issued by the Government Accountability Office with an abstract that begins "Between 50,000 and 60,000 United States Postal Service (Service) employees, or 7 to 8 percent of the Service's workforce, occupied a modified work assignment during fiscal year 2008. The Service must provide these assignments to employees with workplace injuries if work is available to perform within their medical restrictions. Historically, the Service has returned employees to work as soon as possible, partly to reduce its costs for workers' compensation. In 2006, the Service initiated a program, the National Reassessment Process (NRP), to ensure that modified work assignments are medically suitable and necessary to carry out the Service's mission. This requested report addresses (1) the goal of the program, (2) how it is being implemented, and (3) the program's status and outcomes. To perform its work, the Government Accountability Office (GAO) analyzed data and documentation, visited four districts selected to illustrate a range of conditions, and interviewed Service officials."
Date:
December 14, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
United Nations Assistance Mission in Afghanistan: Background and Policy Issues
This report examines the role of United Nations Assistance Mission in Afghanistan (UNAMA) in Afghanistan and discusses the obstacles the organization faces in coordinating international efforts and explores related policy issues and considerations for the 112th Congress.
Date:
December 14, 2009
Creator:
Margesson, Rhoda
Object Type:
Report
System:
The UNT Digital Library
The United Nations Human Rights Council: Issues for Congress
This report provides historical background of the Council, including the role of the previous Commission. It discusses the Council's current mandate and structure, as well as U.S. policy and congressional actions.
Date:
December 14, 2009
Creator:
Blanchfield, Luisa
Object Type:
Report
System:
The UNT Digital Library
VA Construction: VA Is Working to Improve Initial Project Cost Estimates, but Should Analyze Cost and Schedule Risks
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Veterans Affairs (VA) operates one of the largest health care systems in the country. As of August 2009, VA's Veterans Health Administration (VHA) had 32 major ongoing construction projects with an estimated total cost of about $6.1 billion and average cost per project of about $191 million. Some of these projects were initiated as part of VA's Capital Asset Realignment for Enhanced Services (CARES) process, which was a comprehensive assessment of VHA's capital asset requirements. In response to a congressional request, GAO (1) described how costs and schedules of current VHA major construction projects have changed, (2) determined the reasons for changes in costs and schedules, and (3) described the actions VA has taken to address cost increases and schedule delays. To do its work, GAO reviewed construction documents, visited three construction sites, and interviewed VA officials."
Date:
December 14, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Water Quality Sampling Locations Along the Shoreline of the Columbia River, Hanford Site, Washington
As environmental monitoring evolved on the Hanford Site, several different conventions were used to name or describe location information for various sampling sites along the Hanford Reach of the Columbia River. These methods range from handwritten descriptions in field notebooks to the use of modern electronic surveying equipment, such as Global Positioning System receivers. These diverse methods resulted in inconsistent archiving of analytical results in various electronic databases and published reports because of multiple names being used for the same site and inaccurate position data. This document provides listings of sampling sites that are associated with groundwater and river water sampling. The report identifies names and locations for sites associated with sampling: (a) near-river groundwater using aquifer sampling tubes; (b) riverbank springs and springs areas; (c) pore water collected from riverbed sediment; and (d) Columbia River water. Included in the listings are historical names used for a particular site and the best available geographic coordinates for the site, as of 2009. In an effort to create more consistency in the descriptive names used for water quality sampling sites, a naming convention is proposed in this document. The convention assumes that a unique identifier is assigned to each site that is …
Date:
December 14, 2009
Creator:
Peterson, Robert E. & Patton, Gregory W.
Object Type:
Report
System:
The UNT Digital Library
Who Regulates Whom? An Overview of U.S. Financial Supervision
Federal financial regulation in the United States has evolved through a series of piecemeal responses to developments and crises in financial markets. This report provides an overview of current U.S. financial regulation: which agencies are responsible for which institutions and markets, and what kinds of authority they have.
Date:
December 14, 2009
Creator:
Jickling, Mark & Murphy, Edward V.
Object Type:
Report
System:
The UNT Digital Library