11 Matching Results

Search Results

Results: 1 - 11
open access

Autonomous Pathogen Detection System FY02 Annual Progress Report

Description: The objective of this project is to design, fabricate and field demonstrate a biological agent detection and identification capability, the Autonomous Pathogen Detector System (APDS). Integrating a flow cytometer and real-time polymerase chain reaction (PCR) detector with sample collection, sample preparation and fluidics will provide a compact, autonomously operating instrument capable of simultaneously detecting multiple pathogens and/or toxins. The APDS will operate in fixed locations, conti… more
Date: November 11, 2002
Creator: Colston, B.; Brown, S.; Burris, K.; Elkin, C.; Hindson, B.; Langlois, R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Outgassing and Surface Properties of Tin Coated Stainless Steel Chambers.

Description: The stainless steel vacuum chambers of the 248m accumulator ring of Spallation Neutron Source (SNS) are coated with {approx} 100 nm of titanium nitride (TiN) to reduce the secondary electron yield. The coating is produced by DC magnetron sputtering using a long cathode imbedded with permanent magnets. The outgassing rates of several SNS half-cell chambers were measured with and without TiN coating, and before and after in-situ bake. One potential benefit of a TiN coating is to serve as hydrogen… more
Date: November 11, 2002
Creator: He, P.; Hseuh, H. C.; Mapes, M.; Todd, R.; Weiss, D. & Wilson, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hydrogen and Its Desorption in Rhic.

Description: Hydrogen is the dominating gas specie in room temperature, ultrahigh vacuum systems of particle accelerators and storage rings, such as the Relativistic Heavy Ion Collider (RHIC) at Brookhaven. Rapid pressure increase of a few decades in hydrogen and other residual gases was observed during RHIC's recent high intensity gold and proton runs. The type and magnitude of the pressure increase were analyzed and compared with vacuum conditioning, beam intensity, number of bunches and bunch spacing. Mo… more
Date: November 11, 2002
Creator: Hseuh, H. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

Oral History Interview with William J. Alexander, November 11, 2002

Description: Interview with advertising executive and Navy veteran William J. Alexander. The interview includes Alexander's personal experiences about being a teenager during World War II, being a sailor during the last months of World War II, early youth in Casper, Wyoming, moving back to Denver to be reunited with his parent and employment at the Brown Palace Hotel, wartime rationing, joining the Navy, and boot camp. Additionally, Alexander talks about his close relationship with his older brother, life i… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: November 11, 2002
Creator: Marcello, Ronald E. & Alexander, William J.
Item Type: Refine your search to only Book
Partner: UNT Oral History Program
open access

Current Status and Future Technical Challenges for Tokamak Magnets

Description: Magnet technology for fusion in the last decade has been focusing mostly on the development of magnets for tokamaks--the most advanced fusion concept at the moment. The largest and the most complex tokamak under development is ITER. To demonstrate adequate design approaches to large magnets for ITER and to develop industrial capabilities, two large model coils and three insert coils, all using full-scale conductor, were built and tested by the international collaboration during 1994-2002. The s… more
Date: November 11, 2002
Creator: Martovetsky, N.; Minervini, J.; Okuno, K.; Salpiero, E. & Filatov, O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Safety Issues of HG and PB as IFE Target Materials: Radiological Versus Chemical Toxicity

Description: We have performed a safety assessment of mercury and lead as possible hohlraum materials for Inertial Fusion Energy (IFE) targets, including for the first time a comparative analysis of the radiological and toxicological consequences of an accidental release. In order to calculate accident doses to the public, we have distinguished between accidents at the target fabrication facility and accidents at other areas of the power plant. Regarding the chemical toxicity assessment, we have used the US… more
Date: November 11, 2002
Creator: Reyes, S; Latkowski, J F; Cadwallader, L C; Moir, R W; Rio, G. D & Sanz, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Bulk Materials Analysis Using High-Energy Positron Beams

Description: This article reviews some recent materials analysis results using high-energy positron beams at Lawrence Livermore National Laboratory. We are combining positron lifetime and orbital electron momentum spectroscopic methods to provide electron number densities and electron momentum distributions around positron annihilation sites. Topics covered include: correlation of positron annihilation characteristics with structural and mechanical properties of bulk metallic glasses, compositional studies … more
Date: November 11, 2002
Creator: Glade, S C; Asoka-Kumar, P; Nieh, T G; Sterne, P A; Wirth, B D; Dauskardt, R H et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Multiscale Thermohydrologic Model Analyses of Heterogeneity and Thermal-Loading Factors for the Proposed Repository at Yucca Mountain

Description: The MultiScale ThermoHydrologic Model (MSTHM) predicts thermohydrologic (TH) conditions in emplacement drifts and the adjoining host rock throughout the proposed nuclear-waste repository at Yucca Mountain. The MSTHM is a computationally efficient approach that accounts for TH processes occurring at a scale of a few tens of centimeters around individual waste packages and emplacement drifts, and for heat flow at the multi-kilometer scale at Yucca Mountain. The modeling effort presented here is a… more
Date: November 11, 2002
Creator: Glascoe, Lee G.; Buscheck, Thomas A.; Gansemer, James; Sun, Yunwei & Lee, Kenrick
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen