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Monday, 26 January 2009 20:26 |
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Building a solid economic case for quality has taken considerable time, attesting to the difficulties of studying the relationship of quality management and organizational results. Concurrently, the |
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Monday, 26 January 2009 20:26 |
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FOUNDATION technology "changes the playing field" for process manufacturers like Brunner Mond. It enables an automation infrastructure for operational excellence, unifying open, scalable integration; |
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Monday, 14 January 2008 23:58 |
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Title: Strain and temperature characteristics of a long-period grating written in a photonic crystal fiber and its application as a temperature-insensitive strain sensorAuthors: Zhao, Chun-liu; Xiao, Limin; Ju, Jian; Demokan, Suleyman; Jin, WeiAbstract: Strain and temperature characteristics of a long-period grating (LPG) written in an endless-single-mode photonic crystal fiber (ESM-PCF) are investigated theoretically and experimentally. By use of a dispersion factor γ, a deeper understanding |
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Tuesday, 03 June 2008 00:58 |
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Title: Core having magnetic propertiesAuthors: Cheng, Eric; Tang, Chak-yin; Cheng, Ki-wai David; Wu, HangAbstract: A magnetic core is made of a composite magnetic material having a relative permeability of between 1 and 29 at a frequency range from 20 kHz to 2.5 MHz. The composite magnetic material consists of cobalt and nickel particles having an average diameter in the range of 1 to 100 micrometers, and a polymer base binding the particles to form a core. Read more:
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Friday, 27 June 2008 15:18 |
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Ozone Recovery, Warmer AntarcticaThe Antarctic ozone hole that forms every spring has kept that continent's interior cold even as the rest of the world has warmed over the past few decades [see "A Push from Above"; SciAm, August 2002]. Thanks to the global ban on chlorofluorocarbons, stratospheric ozone levels there are slowly recovering. A repaired hole, however, could speed Antarctic |
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Tuesday, 15 July 2008 00:00 |
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Volcanic rocks deep beneath the sea off the coast of California, Oregon and Washington State might prove one of the best places to store the carbon dioxide emissions that are causing global warming, a new study finds. In fact, the very instability that causes earthquakes and eruptions adds an extra layer of protection to keep the CO2 from ever escaping. [More] Read more:
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Monday, 04 August 2008 19:10 |
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CHONGQING--Coal powers China. In addition to producing about 75 percent of its electricity, the dirty, black rock is burned everywhere from industrial boilers to home stoves. More than 4,000 miners die every year digging up the fossil fuel, shortages abound forcing curbs in electricity use, and the country's transportation infrastructure creaks under the weight of distributing it across the |
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Wednesday, 13 August 2008 22:30 |
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On August 14, 2003, shortly after 2 P.M. Eastern Daylight Time, a high-voltage power line in northern Ohio brushed against some overgrown trees and shut down--a fault, as it's known in the power industry. The line had softened under the heat of the high current coursing through it. Normally, the problem would have tripped an alarm in the control room of FirstEnergy Corporation, an Ohio-based |
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Monday, 20 October 2008 23:30 |
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On the outskirts of Seville, Spain, 600 rotating mirrors send shafts of light to a collector atop a soaring 380-foot- (115-meter-) tall tower. Its scalding 480-degree-Fahrenheit (250-degree-Celsius) steam drives a turbine generating a peak capacity of 11 megawatts (MW) of electricity for the national grid. This "power tower" is the first of nine to be built by Spanish engineering giant |
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Thursday, 30 October 2008 13:00 |
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Whether they sit in your kitchen or inside your personal computer, refrigerators and other cooling devices are typically bulky, often noisy and frequently power-hungry. A team at Pennsylvania State University recently found that certain plastics cool off a significant amount--12 degrees Celsius--when an applied electric field is removed. Should the technique become feasible, the resulting |
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Monday, 26 January 2009 20:26 |
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For too long, the discussion of fieldbus has centered around the network aspects. FOUNDATION Fieldbus technology was built from the ground up to be more than just a digital replacement for 4-20mA |
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Monday, 29 October 2007 23:58 |
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Title: Fusion splicing photonic crystal fibers and conventional single-mode fibers : microhole collapse effectAuthors: Xiao, Limin; Demokan, Suleyman; Jin, Wei; Wang, Yiping; Zhao, Chun-liuAbstract: We investigate the microhole collapse property of different photonic crystal fibers (PCFs) and its effect on the splice loss using an electric arc fusion splicer. The physical mechanism of the splice loss for different kinds of PCFs is studied, and a guideline for splicing these PCFs and |
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Tuesday, 15 April 2008 00:58 |
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Title: High-frequency ultrasonic hydrophone based on a cladding-etched DBR fiber laserAuthors: Shao, Liyang; Lau, Sien Ting; Dong, Xinyong; Zhang, Aping; Chan, Helen L. W.; Tam, Hwa-yaw; He, SailingAbstract: Distributed-Bragg-reflector (DBR) fiber-laser-based ultrasonic hydrophone has been found to possess increased detectablefrequency range due to the improved sensitivity in the high-frequency region when the fiber cladding thickness was reduced. A wet etching technique is utilized to reduce |
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Tuesday, 05 February 2008 18:00 |
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Wireless networking technology will one day deliver high-definition video content and other large data files via the airwaves far faster than that information can be now be delivered over wired systems. But it will take major advances in the electronics that drive computer and radio-frequency systems to create such a high-powered wireless highway.One of the most basic examples of such a system is |
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Tuesday, 01 July 2008 15:42 |
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Kakuda, japan--In a recent spin-off of the classic Japanese animated series Mobile Suit Gundam, the depletion of fossil fuels has forced humanity to turn to space-based solar power generation as global conflicts rage over energy shortages. The sci-fi saga is set in the year 2307, but even now real Japanese scientists are working on the hardware needed to realize orbital generators as a form of |
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Monday, 28 July 2008 07:00 |
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As night was falling across the Americas on Sunday, August 28, 1859, the phantom shapes of the auroras could already be seen overhead. From Maine to the tip of Florida, vivid curtains of light took the skies. Startled Cubans saw the auroras directly overhead; ships’ logs near the equator described crimson lights reaching halfway to the zenith. Many people thought their cities had caught |
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Thursday, 07 August 2008 13:00 |
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The turbines at Moss Landing power plant on the California coast burn through natural gas to pump out more than 1,000 megawatts of electric power. The 700-degree Fahrenheit (370-degree Celsius) fumes left over contain at least 30,000 parts per million of carbon dioxide (CO2)--the primary greenhouse gas responsible for global warming--along with other pollutants. [More] Read more:
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Monday, 20 October 2008 17:00 |
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REYKJAVIK, ICELAND--Snorri Sturlusson is the first name in geothermal development here. That's because this original Icelander tapped Earth's heat for a pool in his backyard, according to the medieval Icelandic Sagas. That pool, recently restored, still sits atop a grassy hill in the town of Reykholt. It's about 15 feet (4.5 meters) across, perfectly round, paved with gray and brown basalt tiles, |
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Wednesday, 22 October 2008 18:00 |
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In June the state of Florida made an unusual announcement: it would sue the U.S. Army Corps of Engineers over the corps’s plan to reduce water flow from reservoirs in Georgia into the Apalachicola River, which runs through Florida from the Georgia-Alabama border. Florida was concerned that the restricted flow would threaten certain endangered species. Alabama also objected, worried about |
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Monday, 03 November 2008 23:30 |
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Emissions of a greenhouse gas that has 17,000 times the planet-warming capacity of carbon dioxide are at least four times higher than had been previously estimated. Nitrogen trifluoride (NF3) is used mainly by the semiconductor industry to clean the chambers in which silicon chips are made. The industry had in the past estimated that most of the gas was expended during the cleaning process and |
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