7 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Transducers"  
Results: 1 - 7
open access

Chief Joseph Kokanee Enhancement Project; Strobe Light Deterrent Efficacy Test and Fish Behavior Determination at the Grand Coulee Dam Third Powerplant Forebay, 2002-2003 Annual Report.

Description: Since 1995, the Confederated Tribes of the Colville Reservation (Colville Confederated Tribes) have managed the Chief Joseph Kokanee Enhancement Project as part of the Northwest Power Planning Council (NWPPC) Fish and Wildlife Program. Project objectives have focused on understanding natural production of kokanee (a land-locked sockeye salmon) and other fish stocks in the area above Grand Coulee and Chief Joseph Dams on the Columbia River. A 42-month investigation concluded that entrainment at … more
Date: January 1, 2003
Creator: Johnson, R.; McKinstry, C. & Simmons, C. (Pacific Northwest National Laboratory)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Salt valve and instrumentation test using the nagle long shafted pump :final report.

Description: The Salt Valve and Instrumentation Test was done to provide data on equipment performance in high temperature environments similar to that expected in the next large scale application of that technology. The experiment tested three different valves: (1) a valve with the standard valve body and standard high temperature self-packing material; (2) a valve with the standard valve body and stainless steel O-rings; and (3) a magnetic valve that uses a high temperature coil and no packing material. T… more
Date: June 1, 2003
Creator: Welch, Kathleen T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sensory Transduction of the CO2 Response of Guard Cells

Description: Stomata have a key role in the regulation of gas exchange and intercellular CO2 concentrations of leaves. Guard cells sense internal and external signals in the leaf environment and transduce these signals into osmoregulatory processes that control stomatal apertures. This research proposal addresses the characterization of the sensory transduction of the CO2 signal in guard cells. Recent studies have shown that in Vicia leaves kept at constant light and temperature in a growth chamber, changes… more
Date: June 30, 2003
Creator: Zeiger, Dr. Eduardo
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

INSTRUMENTATION FOR SURVEYING ACOUSTIC SIGNALS IN NATURAL GAS TRANSMISSION LINES

Description: In the U.S. natural gas is distributed through more than one million miles of high-pressure transmission pipelines. If all leaks and infringements could be detected quickly, it would enhance safety and U.S. energy security. Only low frequency acoustic waves appear to be detectable over distances up to 60 km where pipeline shut-off valves provide access to the inside of the pipeline. This paper describes a Portable Acoustic Monitoring Package (PAMP) developed to record and identify acoustic sign… more
Date: September 1, 2003
Creator: Loth, John L.; Morris, Gary J.; Palmer, George M.; Guiler, Richard & Mehra, Deepak
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Salt Valve and Instrumentation Test Using the Nagle Long Shafted Pump: Final Report

Description: The Salt Valve and Instrumentation Test was done to provide data on equipment performance in high temperature environments similar to that expected in the next large scale application of that technology. The experiment tested three different valves: (1) a valve with the standard valve body and standard high temperature self-packing material; (2) a valve with the standard valve body and stainless steel O-rings; and (3) a magnetic valve that uses a high temperature coil and no packing material. T… more
Date: June 1, 2003
Creator: WELCH, KATHLEEN T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

VIBRATION STUDIES ON A SUPERCONDUCTING RHIC INTERACTION REGION QUADRUPOLE TRIPLET.

Description: Mechanical vibrations of the superconducting interaction region triplets have been identified as source of horizontal beam jitter around 10 Hz in the Relativistic Heavy Ion Collider (RHIC). Therefore, cold masses inside one triplet cryostat have been equipped with accelerometers to further investigate the phenomenon. Additionally, helium pressure transducers have been installed to determine helium pressure oscillations as a possible primary vibration source. Recent results will be reported.
Date: May 12, 2003
Creator: MONTAG,C. GANETIS,G. JIA,L. LOUIE,W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radial Reflection Diffraction Tomography

Description: We develop a wave-based tomographic imaging algorithm based upon a single rotating radially outward oriented transducer. At successive angular locations at a fixed radius, the transducer launches a primary field and collects the backscattered field in a ''pitch/catch'' operation. The hardware configuration, operating mode, and data collection method is identical to that of most medical intravascular ultrasound (IVUS) systems. IVUS systems form images of the medium surrounding the probe based up… more
Date: October 10, 2003
Creator: Lehman, S. K. & Norton, S. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen