Search Results

Advanced search parameters have been applied.
open access

External Second Gate-Fourier Transform Ion Mobility Spectrometry.

Description: Ion mobility spectrometry (IMS) is recognized as one of the most sensitive and versatile techniques for the detection of trace levels of organic vapors. IMS is widely used for detecting contraband narcotics, explosives, toxic industrial compounds and chemical warfare agents. Increasing threat of terrorist attacks, the proliferation of narcotics, Chemical Weapons Convention treaty verification as well as humanitarian de-mining efforts has mandated that equal importance be placed on the analysis … more
Date: January 1, 2005
Creator: Tarver, Edward E., III
Partner: UNT Libraries Government Documents Department
open access

Reactive Power Laboratory: Synchronous Condenser Testing&Modeling Results - Interim Report

Description: The subject report documents the work carried out by Oak Ridge National Laboratory (ORNL) during months 5-7 (May-July 2005) of a multi-year research project. The project has the overall goal of developing methods of incorporating distributed energy (DE) that can produce reactive power locally and for injecting into the distribution system. The objective for this new type of DE is to be able to provide voltage regulation and dynamic reactive power reserves without the use of extensive communicat… more
Date: September 27, 2005
Creator: Henry, SD
Partner: UNT Libraries Government Documents Department
open access

Development and Applications of Photosensitive Device Systems to Studies of Biological and Organic Materials

Description: R&D and application testing are proceeding on Pixel Array Detectors (PADs) for time-resolved and crystallographic applications at synchrotron radiation (SR) sources [1, 2, 4, 23, 24]. In conjunction with an NIH-funded SBIR grant, a novel mixed-mode analog/digital pixel design is being developed. Reports and publications on recent developments in the hybrid detector will be presented at the IEEE Nuclear Science Symposium in Rome in October, 2004 [21-23]. We've been invited to help prepare a … more
Date: June 1, 2005
Creator: Gruner, Sol M.
Partner: UNT Libraries Government Documents Department
open access

(Beta)-decay experiments and the unitarity of the CKM matrix

Description: The goal of this project was to perform very precise measurements of super-allowed Fermi {beta} decay in order to investigate a possible non-unitarity in the CKM matrix of the Standard Model of particle physics. Current data from 9 precisely measured {beta} decays indicated that the sum-of-squares of the first row of the CKM matrix differs from 1.0 at the 2.2{sigma} (or 98% confidence) level. If true, it would be the first firm indication of physics beyond the Standard Model--the model that has… more
Date: December 1, 2005
Creator: Garrett, P. E.
Partner: UNT Libraries Government Documents Department
open access

Chilled Mirror Dew Point Hygrometer (CM) Handbook

Description: The CM systems have been developed for the ARM Program to act as a moisture standard traceable to National Institute of Standards and Technology (NIST). There are three CM systems that are each fully portable, self-contained, and require only 110 V AC power. The systems include a CM sensor, air sampling and filtration system, a secondary reference (Rotronic HP043 temperature and relative humidity sensor) to detect system malfunctions, a data acquisition system, and data storage for more than on… more
Date: January 1, 2005
Creator: Ritsche, MT
Partner: UNT Libraries Government Documents Department
open access

US-CERT Control System Center Input/Output (I/O) Conceputal Design

Description: This document was prepared for the US-CERT Control Systems Center of the National Cyber Security Division (NCSD) of the Department of Homeland Security (DHS). DHS has been tasked under the Homeland Security Act of 2002 to coordinate the overall national effort to enhance the protection of the national critical infrastructure. Homeland Security Presidential Directive HSPD-7 directs the federal departments to identify and prioritize critical infrastructure and protect it from terrorist attack. Th… more
Date: February 1, 2005
Partner: UNT Libraries Government Documents Department
open access

Vendor System Vulnerability Testing Test Plan

Description: The Idaho National Laboratory (INL) prepared this generic test plan to provide clients (vendors, end users, program sponsors, etc.) with a sense of the scope and depth of vulnerability testing performed at the INL’s Supervisory Control and Data Acquisition (SCADA) Test Bed and to serve as an example of such a plan. Although this test plan specifically addresses vulnerability testing of systems applied to the energy sector (electric/power transmission and distribution and oil and gas systems), i… more
Date: January 1, 2005
Creator: Davidson, James R.
Partner: UNT Libraries Government Documents Department
open access

Cyber Incidents Involving Control Systems

Description: The Analysis Function of the US-CERT Control Systems Security Center (CSSC) at the Idaho National Laboratory (INL) has prepared this report to document cyber security incidents for use by the CSSC. The description and analysis of incidents reported herein support three CSSC tasks: establishing a business case; increasing security awareness and private and corporate participation related to enhanced cyber security of control systems; and providing informational material to support model developm… more
Date: October 1, 2005
Creator: Turk, Robert J.
Partner: UNT Libraries Government Documents Department
open access

Bayesian Approaches for Adaptive Spatial Sampling: An Example Application.

Description: BAASS (Bayesian Approaches for Adaptive Spatial Sampling) is a set of computational routines developed to support the design and deployment of spatial sampling programs for delineating contamination footprints, such as those that might result from the accidental or intentional environmental release of radionuclides. BAASS presumes the existence of real-time measurement technologies that provide information quickly enough to affect the progress of data collection. This technical memorandum descr… more
Date: May 25, 2005
Creator: Johnson, R. L.; LePoire, D.; Huttenga, A. & Quinn, J.
Partner: UNT Libraries Government Documents Department
open access

Proposal to upgrade the MIPP data acquisition system

Description: The MIPP TPC is the largest contributor to the MIPP event size by far. Its readout system and electronics were designed in the 1990's and limit it to a readout rate of 60 Hz in simple events and {approx} 20 Hz in complicated events. With the readout chips designed for the ALICE collaboration at the LHC, we propose a low cost effective scheme of upgrading the MIPP data acquisition speed to 3000 Hz.
Date: March 1, 2005
Creator: Baker, W.; Carey, D.; Johnstone, C.; Kostin, M.; Meyer, H. & Raja, R.
Partner: UNT Libraries Government Documents Department
open access

Radiological Monitoring Equipment For Real-Time Quantification Of Area Contamination In Soils And Facility Decommissioning

Description: The environmental restoration industry offers several sys¬tems that perform scan-type characterization of radiologically contaminated areas. The Idaho National Laboratory (INL) has developed and deployed a suite of field systems that rapidly scan, characterize, and analyse radiological contamination in surface soils. The base system consists of a detector, such as sodium iodide (NaI) spectrometers, a global positioning system (GPS), and an integrated user-friendly computer interface. This mobil… more
Date: September 1, 2005
Creator: Carpenter, M. V.; Roach, Jay A.; Giles, John R & Roybal, Lyle G.
Partner: UNT Libraries Government Documents Department
open access

INL Capabilities For Nuclear Data Measurements Using The Argonne Intense Pulsed Neutron Source Facility

Description: The relevant facts concerning the Argonne National Laboratory – Intense Pulsed Neutron Source (ANL/IPNS) and the Idaho National Laboratory (INL) apparatus for use at the ANL/IPNS facility to measure differential neutron interaction cross sections of interest for advanced reactor physics applications are presented. The INL apparatus, which consists of an array of multiple types of multiple detectors operated in coincidence, signal electronics, and a data acquisition system, is presented as an ap… more
Date: July 1, 2005
Creator: Aryaeinejad, R.; Nigg, D. W.; Janssens, R.V.F.; Micklich, B. J.; Ter-Akopian, G. & Cole, J. D.
Partner: UNT Libraries Government Documents Department
open access

Cyber Assessment Methods For SCADA Security

Description: The terrorist attacks of September 11, 2001 brought to light threats and vulnerabilities that face the United States. In response, the U.S. Government is directing the effort to secure the nation's critical infrastructure by creating programs to implement the National Strategy to Secure Cyberspace (1). One part of this effort involves assessing Supervisory Control and Data Acquisition (SCADA) systems. These systems are essential to the control of critical elements of our national infrastructure… more
Date: June 1, 2005
Creator: Permann, May Robin & Rohde, Kenneth
Partner: UNT Libraries Government Documents Department
open access

Characterization of a PET Camera Optimized for ProstateImaging

Description: We present the characterization of a positron emission tomograph for prostate imaging that centers a patient between a pair of external curved detector banks (ellipse: 45 cm minor, 70 cm major axis). The distance between detector banks adjusts to allow patient access and to position the detectors as closely as possible for maximum sensitivity with patients of various sizes. Each bank is composed of two axial rows of 20 HR+ block detectors for a total of 80 detectors in the camera. The individua… more
Date: November 11, 2005
Creator: Huber, Jennifer S.; Choong, Woon-Seng; Moses, William W.; Qi,Jinyi; Hu, Jicun; Wang, G.C. et al.
Partner: UNT Libraries Government Documents Department
open access

Locomotive Emission and Engine Idle Reduction Technology Demonstration Project

Description: In response to a United States Department of Energy (DOE) solicitation, the Maryland Energy Administration (MEA), in partnership with CSX Transportation, Inc. (CSXT), submitted a proposal to DOE to support the demonstration of Auxiliary Power Unit (APU) technology on fifty-six CSXT locomotives. The project purpose was to demonstrate the idle fuel savings, the Nitrous Oxide (NOX) emissions reduction and the noise reduction capabilities of the APU. Fifty-six CSXT Baltimore Division locomotives we… more
Date: March 14, 2005
Creator: Archer, John R.
Partner: UNT Libraries Government Documents Department
open access

Novel Gas Sensors for High-Temperature Fossil Fuel Applications, Phase I: Final Report

Description: SRI International (SRI) is developing ceramic-based microsensors to detect exhaust gases such as NO, NO{sub 2}, and CO in advanced combustion and gasification systems under this DOE NETL-sponsored research project. The sensors detect the electrochemical activity of the exhaust gas species on catalytic electrodes attached to a solid state electrolyte and are designed to operate at the high temperatures, elevated pressures, and corrosive environments typical of large power generation exhausts. Th… more
Date: March 1, 2005
Creator: Jayaweera, Palitha & Tanzella, Francis
Partner: UNT Libraries Government Documents Department
open access

Characterization of Photovoltaic Concentrators

Description: This paper will describe the resources at the National Renewable Energy Laboratory (NREL) for performing characterization of photovoltaic (PV) materials designed for operation under concentrated light. NREL has the capability to measure devices ranging from very small, unencapsulated research cells to reasonably sized, environmentally protected modules. Data gathering and interpretation are also ongoing areas of revision and improvement. The main goal of the current research is to reduce the me… more
Date: January 1, 2005
Creator: Kiehl, J. & Emery, E.
Partner: UNT Libraries Government Documents Department
open access

NOVEL EXCAVATION TECHNOLOGIES FOR EFFICIENT AND ECONOMIC SURFACE MINING

Description: Ground excavation constitutes a significant component of production costs in any surface mining operation. The excavation process entails material digging and removal in which the equipment motion is constrained by the workspace geometry. A major excavation problem is the variability of material properties, resulting in varying mechanical energy input and stress loading of shovel dipper-and-tooth assembly across the working bench. This variability has a huge impact on the shovel dipper and toot… more
Date: May 1, 2005
Creator: Kecojevic, Vladislav & Frimpong, Samuel
Partner: UNT Libraries Government Documents Department
open access

Security on the US Fusion Grid

Description: The National Fusion Collaboratory project is developing and deploying new distributed computing and remote collaboration technologies with the goal of advancing magnetic fusion energy research. This work has led to the development of the US Fusion Grid (FusionGrid), a computational grid composed of collaborative, compute, and data resources from the three large US fusion research facilities and with users both in the US and in Europe. Critical to the development of FusionGrid was the creation a… more
Date: June 1, 2005
Creator: Burruss, Justin R.; Fredian, Tom W. & Thompson, Mary R.
Partner: UNT Libraries Government Documents Department
open access

Advanced Indoor Module Light-Soaking Facility

Description: An overview of the accelerated, indoor light-soaking test station is presented in this paper, along with data obtained for six modules that underwent exposure. The station comprises a climate-controlled chamber equipped with a solar simulator that allows 1-sun light intensity exposure. Concurrently, we monitor the electrical characteristics of multiple PV modules and exercise active control over their electrical bias using programmable electronic loads, interfaced to a data acquisition system t… more
Date: January 1, 2005
Creator: del Cueto, J. A.; Osterwald, C. & Pruett, J.
Partner: UNT Libraries Government Documents Department
open access

Data security on the national fusion grid

Description: The National Fusion Collaboratory project is developing and deploying new distributed computing and remote collaboration technologies with the goal of advancing magnetic fusion energy research. This work has led to the development of the US Fusion Grid (FusionGrid), a computational grid composed of collaborative, compute, and data resources from the three large US fusion research facilities and with users both in the US and in Europe. Critical to the development of FusionGrid was the creation a… more
Date: June 1, 2005
Creator: Burruss, Justine R.; Fredian, Tom W. & Thompson, Mary R.
Partner: UNT Libraries Government Documents Department
open access

Status of the Control System on the National Spherical Torus Experiment (NSTX)

Description: In 2003, the NSTX plasma control system was used for plasma shape control using real-time equilibrium reconstruction (using the rtEFIT code - J. Ferron, et al., Nucl. Fusion 38 1055 (1998)). rtEFIT is now in routine use for plasma boundary control [D. A. Gates, et al., submitted to Nuclear Fusion (2005)]. More recently, the system has been upgraded to support feedback control of the resistive wall mode (RWM). This paper describes the hardware and software improvements that were made in support … more
Date: August 5, 2005
Creator: Gates, D. A.; Ferron, J. R.; Bell, M.; Gibney, T.; Johnson, R.; Marsala, R. J. et al.
Partner: UNT Libraries Government Documents Department
open access

DIFFERENTIAL GROUP-VELOCITY DETECTION OF FLUID PATHS

Description: For nearly 50 years, surface waves that propagate through near-surface soils have been utilized in engineering for the determination of the small-strain dynamic properties of soils. These techniques, although useful, have not been sufficiently precise to use in detecting the subtle changes in soil properties that accompany short-term changes in fluid content. The differential techniques developed in this research now make it possible to monitor small changes (less than 3 cm) in the water level … more
Date: December 20, 2005
Creator: Long, Leland Timothy
Partner: UNT Libraries Government Documents Department
open access

Small Hybrid Systems and Applications Testing at NREL's Outdoor Test Facility

Description: The PV International Program at the National Renewable Energy Laboratory recently installed a small hybrid solar and wind energy system that could produce enough electricity to power a cabin or provide electricity in a remote village, without being connected to a utility grid. The solar system can provide 1,400 watts of power, and the wind turbine is rated at 900 watts when the wind is blowing at 28 miles per hour. The 48-volt system has eight batteries for storage. When the batteries are fully… more
Date: January 1, 2005
Creator: Roybal, L.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen