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The Arctic Ocean and Climate Change: A Scenario for the US Navy

Description: This report is an edited compilation of the views of the panel of experts convened by the United States Arctic Research Commission to assist the Navy in considering the effects of climate change on their operations in and around the Arctic Ocean in the mid to lat Twenty First Century.
Date: 2002
Creator: United States. Arctic Research Commission.
Partner: UNT Libraries Government Documents Department

The Next Generation Air Particle Detectors for the United States Navy

Description: Design and testing of the United States Navy’s next generation air particle detector (NGAPD) is presently underway. The NGAPD is intended for use in nuclear applications for the United States Navy and is being designed to detect airborne Co-60 with a reduction in false alarms and improved ease of use. Features being developed include gamma compensation, low maintenance, commercial off-the-shelf electronics, and spectrum simulation for quality assurance and functional testing applications. By supplying a spectrum simulator, the radon stripping algorithm can be running when a simulated anthropogenic source spectrum (e.g., from Co-60 or transuranics) is superimposed on the radon progeny spectrum. This will allow alarm levels to be tested when the air flow is running and the radon stripping algorithm is providing the instrument response output. Modern units evaluate source spectra with the air flow off and the radon spectrum absent thereby not testing the true system performance which comes out of the radon stripping algorithm. Testing results of the preliminary prototype show promise along with computer simulations of source spectra. Primary testing results taken to date include gamma compensation, thermal insults, vibration and spectrum simulation.
Date: June 24, 2007
Creator: Marianno, Robert Hayes and Craig
Partner: UNT Libraries Government Documents Department

Use of MCNPX for Alpha Spectrometry Simulations of a Continuous Air Monitor

Description: The purpose of this study was to determine if the alpha energy spectrum in a Passive Implanted Planar Silicon (PIPS) detector, as modeled by MCNPX [1], can be used to design a radon stripping algorithm for a continuous air monitor (CAM). This stripping algorithm would be employed to discriminate naturally occurring radioisotopes from the anthropogenic for nuclear safety -related applications. It is hoped that using an algorithm based on MCNPX simulations, the CAM will not be prone to false alarms when radon levels are dynamic as identified in other CAM systems [2,3]. This work is focused on the design of the next generation air particulate detector (NGAPD) for the United States Navy. The primary isotope of interest is Co-60. This radionuclide emits a beta with an average energy of 96 keV. Therefore, once deposited on the CAM filter, it will produce a beta continuum seen by the PIPS detector. In addition, as radon progeny is deposited on the air filter, these will give rise to characteristic alpha peaks and a beta continuum. This is primarily an issue in port-or land-based applications. Ultimately, measurement of a radon alpha spectrum is desired to predict the amount of beta activity which would be measured from the radon progeny decay chains. All excess beta activity could then be attributed to anthropogenic sources once the radon progeny contributions have been stripped out.
Date: January 1, 2007
Creator: Robert Hayes, Craig Marianno
Partner: UNT Libraries Government Documents Department

Defense Primer: Department of the Navy

Description: This report provides basic information on the Department of the Navy, which includes both the Navy and the Marine Corps. It also describes the Coast Guard's relationship to the Department.
Date: August 6, 2018
Creator: O'Rourke, Ronald
Partner: UNT Libraries Government Documents Department

Newsmap for the Armed Forces : the sea-air navy : 319 warships set for Atlantic and Pacific fleets

Description: Front: Text describes proposed post-war Atlantic and Pacific U.S. fleets. Shows graphic silhouettes of the different types of ships. Includes chart of proposed Navy personnel. Back: Let's not be fooled again... Text includes: Pro-German attitude grows as U.S. troops fraternize -- We talk tough, but we act soft -- Soldier's opinions of Germans rising. Reasons given for post-war occupation of Germany.
Date: February 25, 1946
Creator: [United States.] Army Information Branch.
Partner: UNT Libraries Government Documents Department

Oral History Interview with Frank L. Dolan, December 15, 1995

Description: Interview with Navy veteran Frank L. Dolan. The interview includes Dolan's personal experiences aboard the repair ship USS Vestal during the Japanese attack at Pearl Harbor on December 7, 1941. The interview includes an appendix with a narrative written by Dolan.
Access: This item is restricted to UNT Community Members. Login required if off-campus.
Date: December 15, 1995
Creator: Marcello, Ronald E. & Dolan, Frank L.
Partner: UNT Oral History Program

The Historical and Technical Development of the United States and Confederate States Navies during the Civil War

Description: This study will cover the period between 1861 and 1865. It will cover within that period of time, the technical and historical advance of the navy through the Civil War. The technical approach will cover the advancements in design, engineering, and armament from the beginning of hostilities to its end, and contrast those advancements with those of the period immediately preceding them and immediately after it, while the historical approach will cover the main engagements of the war and the results of the technical advances. The study will also cover the advancement and growth of the Confederate States Navy, and the effect which the marine designs of that navy had on the designs of the rival United States Navy.
Date: 1951
Creator: Hanscom, John Francis
Partner: UNT Libraries