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- Closed-cell duct insulation protects against mold, fibers and noise
- Mold-resistant, fiber-free AP Armaflex Duct Liner provides a clean and safe method for insulating and quieting air ducts while protecting indoor air quality. The closed cell foam provides superior moisture control, sound attenuation and vibration dampening and is nearly maintenance-free. [ILLUSTRATION OMITTED] --Armacell LLC, Mebane, NC, www.armacell.com/us...
- Research articles 2008-05-01
- Tracking wireless
- Experts answer users' questions on tracking wireless assets in industrial settings Looking for your car keys, the remote, or the cat is fast becoming analogous in an industrial facility to finding a vehicle, sensor, or tank car. What was originally associated with the radio frequency identification RFID world...
- Research articles 2008-04-01
- TRADE NEWS: Agilent Technologies' New Attenuation Control Units Aid in WiMAX™, WLAN Device Testing
- SANTA CLARA, Calif. -- Agilent Technologies Inc. (NYSE:A) today announced new integrated attenuation control units operating in the DC to 6, 18 and 26.5 GHz frequency range. The instruments feature up to 121 dB of attenuation with selectable step values and a programmable attenuation sweep function that enables user-defined sweep...
- Research articles 2008-06-11
- Enhanced surface mount ferrite bead series.(PASSIVES)
- Murata Electronics' enhanced 0201 surface mount ferrite bead is designed to meet Federal Communications Commission FCC electro-magnetic interference EMI regulations and Ininimize attenuation in high speed signals. Suitable for Bluetooth and WLAN modules, Power Amplifier Modules for cellphones, personal digital assistants PDAs, and laptops the...
- Research articles 2006-02-01
- Human-observer receiver-operating-characteristic evaluation of attenuation, scatter, and resolution compensation strategies for ^sup 99m^Tc myocardial perfusion imaging
- Nonuniform attenuation, scatter, and distance-dependent resolution are confounding factors inherent in SPECT imaging. Iterative reconstruction algorithms permit modeling and compensation of these degradations. We investigated through human-observer receiver-operating-characteristic ROC studies which if any combination of such compensation strategies best improves the accuracy of detection of coronary artery disease CAD when...
- Research articles 2003-11-01
- Determination of the attenuation map in emission tomography
- SPECIAL CONTRIBUTIONS Reliable attenuation correction methods for quantitative emission CT ECT require accurate delineation of the body contour and often necessitate knowledge of internal anatomic structure. Two broad classes of methods have been used to calculate the attenuation map: transmission less and transmission-based attenuation correction techniques. Whereas calculated attenuation correction...
- Research articles 2003-02-01
- AC power conditioning.
- Features * EXTREME ISOLATION TRANSFORMERS EIT AND POWER LINE CONDITIONERS PLC * INDUSTRIAL-GRADE (POWER GUARD[TM]) MODELS * MEDICAL GRADE ULTRA-LOW LEAKAGE (LIFE GUARD[TM]) MODELS * WIDE-BAND NOISE ATTENUATION *...
- Research articles 2002-11-15
- Reducing loss of image quality because of the attenuation artifact in uncorrected PET whole-body images
- In whole-body PET, it is not unusual to shorten the study time by omitting the transmission scan and to ignore attenuation during reconstruction. If a transmission scan is available, many centers reconstruct the images with, but also without, attenuation correction. Although ignoring attenuation leads to an artifact in the reconstructed...
- Research articles 2002-08-01
- Low-tech remedies save millions at DOE site. (Casebook).(Idaho National Engineering and Environmental Laboratory)(Brief Article)
- Scientists at the Idaho National Engineering and Environmental Laboratory INEEL, Idaho Falls, Idaho, knew that pump-and-treat was not the best solution for a trichloroethene-contaminated aquifer at the site. Because other innovative and cost-effective groundwater treatment technologies were being developed and perfected, INEEL--together with U.S. EPA...
- Research articles 2002-03-01
- Comparison of the NIST and NPL Air Kerma Standards Used for X-Ray Measurements Between 10 kV and 80 kV
- A direct comparison was made between the air kerma primary standards used for the measurements of low-energy x rays at the National Institute of Standards and Technology NIST and the National Physical Laboratory NPL. The comparison was conducted at the NPL using NPL reference radiation qualities between 10 kV and...
- Research articles 2000-09-01
- Coding and Modulation for LMDS and Analysis of the LMDS Channel
- Local Multipoint Distribution Service LMDS has the potential to become a viable alternative to coaxial cable, fiber and other wired and wireless technologies providing "last mile" communication services. A major obstacle, however, is the high equipment cost. While for example cable modems supporting two-way services are available for $200 to...
- Research articles 2000-09-01
- World's HIGHEST PERFORMANCE, 24-Bit 96 kHz Audio CODEC Ideal For High-End Consumer and Professional Applications
- Business Editors NOTE TO MEDIA: Photo is available in a Smart News ReleaseTM on Business Wire's Home Page at www.businesswire.com SAN DIEGO--BUSINESS WIRE--Feb. 17, 2000 New from AKM Semiconductor Inc is the AK4528, an Ultra high performance, 2-channel, 24-bit CODEC for use in 96kHz recording systems....
- Research articles 2000-02-17
- The Gorman-Rupp Company.(PRODUCT FOCUS: BY-PASS PUMPING)
- The new pump model PA6C60-4045T-ESP from Gorman-Rupp offers high performance, sound attenuation and an environmental containment base. It has flow rates up to 2,750 gpm, heads up to 200 feet and can handle 3-inch solids. The pump has the ability to r The new pump model...
- Research articles 2006-12-01
- Computer-aided design of MMIC variable attenuators.
- GaAs MESFETs at zero drain bias have been used as variable resistors to construct a T-type attenuator.[1,2] The impedance matching condition and attenuation as a function of the resistance values for the series and shunt MESFETs are shown in Figure 1 and Table 1, respectively. This ...
- Research articles 1997-11-01
- RFMD Introduces 10dB Switched Attenuator
- DENVER--BUSINESS WIRE--June 10, 1997--RF Micro Devices, Inc., attending the 1997 IEEE MTT-S International Microwave Symposium/Exhibition here, has introduced the RF2421, a monolithic CMOS programmable switched attenuator ideally suited for communications systems that require RF power control by digital means. The RF2421, manufactured using GaAs MESFET process technology,...
- Research articles 1997-06-10
- Four channel EMI filter with ESD protection.(Microwave & RF Components)
- California Micro Devices has announced a four channel electromagnetic interference filter array with electrostatic discharge ESD protection for data lines that connect the RF wireless and baseband chipsets, keypad modules, I/O data ports and buses California Micro Devices has announced a four channel electromagnetic...
- Research articles 2004-11-01
- Polarization Maintaining VOA: Corning Photonic Technologies, Corning, NY www.corning.com/photonictechnologies.(Brief Article)
- Corning Incorporated has unveiled its Eclipse Polarization Maintaining Variable Optical Attenuator (PM-VOA). Polarization preserving, high-speed attenuation control is available in a compact, solid state package. Constant polarization output is maint Corning Incorporated has unveiled its Eclipse Polarization Maintaining Variable Optical Attenuator (PM-VOA). Polarization preserving,...
- Research articles 2001-05-01
- U.S. Army Engineer Research and Development Center (ERDC).
- * Informing the public and regulators about the natural attenuation process is important for cleaning up explosives contamination in ground water, Judith Pennington of the U.S. Army Engineer Research and Development Center ERDC told the Partners i * Informing the public and regulators about the...
- Research articles 2000-01-12
- High Performance Fiber: Corning Incorporated Corning, NY www.corningfiber.com.(Brief Article)
- Corning Incorporated unveiled SMF-28e[TM] fiber, an extension of its single-mode fiber product line. SMF-28e fiber, designed with low attenuation at the water peak, offers network designers the ability to create high-capacity, low-cost networks. This Corning Incorporated unveiled SMF-28e[TM] fiber, an extension of its single-mode fiber...
- Research articles 2001-05-01
- Natural attenuation for York Oil clean-up:.
- The US Environmental Protection Agency EPA has selected 'natural attenuation' to achieve the break-down of organic contaminants in the ground water at the York Oil Superfund site, a former 17-acre (7 ha) waste oil recycling and storage facility in The US Environmental Protection Agency EPA...
- Research articles 1998-11-01
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