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Davis-Bacon Suspension and Its Legislative Aftermath
None
Date:
April 12, 2006
Creator:
Whittaker, William G.
System:
The UNT Digital Library
Effects of Test Temperature on Flow of Metallic Glasses
Micro-hardness experiments were conducted over a range of temperatures using a Nikon QM micro-hardness machine on a number of metallic glass (e.g. Zr-, Fe-, Al-) systems. Although high micro-hardness was exhibited at room temperature, significant hardness reductions were exhibited near the glass transition temperature, T{sub g}. The effects of changes in test temperature on the micro-hardness will be reported. The effects of exposure time on the hardness evolution at a given temperature will also be summarized to illustrate some of the differences in behavior of the systems shown. The extreme softening near T{sub g}, characteristic of bulk metallic glass systems, enables the exploration of novel deformation processing. In order to develop deformation processing windows, the evaluation of bulk metallic glass mechanical properties under quasi-static conditions and the determination of flow properties at different temperatures and strain rates are reported. The use of such information to create layered/composite bulk metallic glasses will be summarized.
Date:
April 12, 2006
Creator:
Nouri, A. S.; Liu, Y.; Wesseling, P. & Lewandowski, J.
System:
The UNT Digital Library
The Endangered Species Act (ESA) in the 109th Congress: Conflicting Values and Difficult Choices
This report discusses various proposals to amend the Endangered Species Act of 1973 (ESA; P.L. 93-205, 16 U.S.C. §§1531-1543). Major issues include changing the role of science in decision-making, modifying critical habitat (CH) procedures, reducing conflicts with Department of Defense activities, incorporating further protection and incentives for property owners, and increasing protection of listed species, among others.
Date:
April 12, 2006
Creator:
Buck, Eugene H.; Corn, M. Lynne; Sheikh, Pervaze A.; Baldwin, Pamela & Meltz, Robert
System:
The UNT Digital Library
Environmental Protection Issues in the 109th Congress
This report gives an overview of key environmental issues receiving attention in the 109th Congress.
Date:
April 12, 2006
Creator:
Fletcher, Susan R. & Isler, Margaret
System:
The UNT Digital Library
Explosion Source Phenomena Using Soviet, Test-Era, Waveform Data
During the nuclear testing era, the former Soviet Union carried out extensive observations of underground nuclear explosions, recording both their own shots and those of foreign nuclear states. Between 1961 and 1989, the Soviet Complex Seismological Expedition deployed seismometers at time-varying subsets of over 150 sites to record explosions at regional distances from the Semipalatinsk and Lop Nor test sites and from the shot points of peaceful nuclear explosions. This data set included recordings from broadband, multi-channel ChISS seismometers that produced a series of narrow band outputs, which could then be measured to perform spectral studies. [ChISS is the Russian abbreviation for multichannel spectral seismometer. In this instrument the signal from the seismometer is passed through a system of narrow bandpass filters and recorded on photo paper. ChISS instruments have from 8 to 16 channels in the frequency range from 100 sec to 40 Hz. We used data mostly from 7 channels, ranging from 0.08 to 5 Hz.] Quantitative, pre-digital era investigations of high-frequency source scaling relied on this type of data. To augment data sets of central Central Asia explosions, we have measured and compiled 537 ChISS coda envelopes for 124 events recorded at Talgar, Kazakhstan, at a distance …
Date:
April 12, 2006
Creator:
Richards, Paul G.; Rautian, Tatyana G.; Khalturin, Vitaly I. & Phillips, W. Scott
System:
The UNT Digital Library
Iran's Nuclear Program: Recent Developments
This report examines various issues regard Iran and its nuclear program.International Atomic Energy Agency (IAEA) inspections since 2003 have revealed two decades’ worth of undeclared nuclear activities in Iran, including uranium enrichment and plutonium separation efforts. Iran agreed in 2003 to suspend its enrichment and reprocessing activities in exchange for promises of assistance from Germany, France, and the UK (EU-3), but negotiations broke down in August 2005. On September 24, 2005, the IAEA Board of Governors found Iran to be in noncompliance with its Nuclear Nonproliferation Treaty (NPT) safeguards agreement (GOV/2005/77) and voted (GOV/2006/14) on February 4 to report Iran to the U.N. Security Council. The Security Council issued a presidential statement on March 29 that called upon Iran to reinstitute its voluntary suspension of enrichment and reprocessing and asked the IAEA to report on Iran’s compliance by April 28. On April 11, Iranian officials announced that they had enriched some uranium to 3.5% enrichment (fuel-grade).
Date:
April 12, 2006
Creator:
Squassoni, Sharon
System:
The UNT Digital Library
Iraq's Nuclear Program: Recent Developments
This report discusses suspicions of an Iranian nuclear weapons program, and Iran’s current plans — to construct seven nuclear power plants (1000 MW each) by 2025.
Date:
April 12, 2006
Creator:
Squassoni, Sharon
System:
The UNT Digital Library
LCLS XTOD Attenuator System System Concept Report
The attenuator system for the Linac Coherent Light Source (LCLS) X-ray Transport, Optics and Diagnostics (XTOD) system has been configured and analyzed by the Lawrence Livermore National Laboratory's New Technologies Engineering Division (NTED) as requested by the SLAC/LCLS program. The system layout, performance analyses and selection of the vacuum components are presented in this System Conceptual Review (SCR) report. Also included are the plans for prototype, procurement, mechanical integration, and the cost estimates.
Date:
April 12, 2006
Creator:
Kishiyama, K.; Roeben, M.; Trent, J.; Ryutov, D. & Shen, S.
System:
The UNT Digital Library
Legislative Approaches to Chemical Facility Security
This report discusses current chemical facility security efforts, issues in defining chemical facilities, policy challenges in developing chemical facility security legislation, and the various policy approaches.
Date:
April 12, 2006
Creator:
Shea, Dana A.
System:
The UNT Digital Library
Medical Malpractice: An Overview
None
Date:
April 12, 2006
Creator:
unknown
System:
The UNT Digital Library
Navy Ship Propulsion Technologies: Options for Reducing Oil Use - Background for Congress
None
Date:
April 12, 2006
Creator:
O'Rourke, Ronald
System:
The UNT Digital Library
Pandemic Flu and Medical Biodefense Countermeasure Liability Legislation: P.L. 109-148, Division C (2005)
None
Date:
April 12, 2006
Creator:
Cohen, Henry
System:
The UNT Digital Library
Small Business Expensing Allowance: Current Status, Legislative Proposals, and Economic Effects
None
Date:
April 12, 2006
Creator:
unknown
System:
The UNT Digital Library
SRAT/SME Vessel
The Defense Waste Processing Facility (DWPF), at the Savannah River Site (SRS), is processing and immobilizing the radioactive high level waste sludge slurry at SRS into a durable borosilicate glass for final geological disposal. Each time a new batch of radioactive sludge is to be processed by the DWPF, the process flow sheet is to be tested and demonstrated to ensure an acceptable melter feed and glass can be made. These demonstrations are completed in the Shielded Cells Facility in the Savannah River National Laboratory at SRS.
Date:
April 12, 2006
Creator:
DOBOS, J
System:
The UNT Digital Library
Sudan: Humanitarian Crisis, Peace Talks, Terrorism, and U.S. Policy
None
Date:
April 12, 2006
Creator:
Dagne, Ted
System:
The UNT Digital Library
U.S. Trade Deficit and the Impact of Rising Oil Prices
None
Date:
April 12, 2006
Creator:
unknown
System:
The UNT Digital Library