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Institution

General Electric

CompanyBoston, Massachusetts, United States
About: General Electric is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Turbine & Rotor (electric). The organization has 76365 authors who have published 110557 publications receiving 1885108 citations. The organization is also known as: General Electric Company & GE.
Topics: Turbine, Rotor (electric), Signal, Combustor, Coating


Papers
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Patent
17 May 1996
TL;DR: In this article, a method of tracking railcars in transit using global positioning techniques involves determining the location of a railcar by using a Global Positioning System (GPS) receiver and a satellite transceiver on board the locomotive, and a local area network of railcar tracking units.
Abstract: A method of tracking railcars in transit using global positioning techniques involves determining the location of a railcar by using a Global Positioning System (GPS) receiver and a satellite transceiver on board the locomotive, and a local area network of railcar tracking units. Instead of computing the GPS solution independently and transmitting it to a central station, the railcar tracking units transmit their unique identifications (IDs) to one of the tracking units in the local area network acting as an administrator tracking unit. The administrator tracking unit maintains a list of IDs and periodically transmits the list of IDs to the locomotive. The locomotive locates itself using the GPS system and periodically transmits its position and velocity to the central station.

186 citations

Journal ArticleDOI
Robert L. Coble1
TL;DR: In this article, the effect of trapped atmosphere on closure of pores was determined from apparent density limits obtained at high sintering temperatures and long sinterings times, and it was shown that porosity can be eliminated if discontinuous grain growth was controlled and if the ambient atmosphere was hydrogen, oxygen, or vacuum.
Abstract: Two effects of atmosphere on the sintering of alumina powder compacts were investigated. Changing the oxidizing conditions during early-stage sintering measurements showed that, within the range −70°F dew point oxygen to −70°F hydrogen equilibrated with alumina, there was no observable effect on sintering rate. The effect of trapped atmosphere on closure of pores was determined from apparent density limits obtained at high sintering temperatures and long sintering times. The complete elimination of porosity during sintering of alumina was possible if discontinuous grain growth was controlled and if the ambient atmosphere was hydrogen, oxygen, or vacuum. Porosity could not be completely eliminated when the ambient atmosphere was helium, argon, or nitrogen (or therefore air).

186 citations

Patent
23 Apr 1998
TL;DR: In this article, a method and an apparatus for allowing the operator of an ultrasound imaging system to switch between two-dimensional slices and three-dimensional projections in such a way that it is easy for the operator to visualize the relationship of the 2D slice to the 3D anatomy.
Abstract: A method and an apparatus for allowing the operator of an ultrasound imaging system to switch between two-dimensional slices and three-dimensional projections in such a way that it is easy for the operator to visualize the relationship of the two-dimensional slice to the three-dimensional anatomy. In a "volume rotate" mode, the display screen displays an orientation box along with a three-dimensional projected image generated from a defined data volume. The orientation box provides a visual indication of the shape and orientation of that defined data volume. In a "cut plane" mode, a movable polygon representing a selected two-dimensional slice is displayed inside a stationary orientation box. The polygon provides a visual indication of the orientation and position of the slice relative to the defined data volume. In a "cut plane rotate" mode, a stationary polygon representing a selected two-dimensional slice is displayed inside a rotatable orientation box.

186 citations

Journal ArticleDOI
TL;DR: The magnetic ordering temperature of amorphous pure Fe has been studied by Mossbauer spectroscopy and in some cases by magnetization measurements as mentioned in this paper, and the mean hyperfine field is found to be proportional to the average Fe moment with a ratio of about 130 kOe/${\mathrm{\ensuremath{\mu}}}
Abstract: Amorphous samples of ${\mathrm{Fe}}_{x}{\mathrm{B}}_{100\ensuremath{-}x}(72l~xl~86)$ have been studied by $^{57}\mathrm{Fe}$ M\"ossbauer spectroscopy and in some cases by magnetization measurements. The magnetic ordering temperature (${T}_{C}$) decreases sharply with increasing Fe concentration; from 760 K (${\mathrm{Fe}}_{72}$${\mathrm{B}}_{28}$) to 552 K (${\mathrm{Fe}}_{86}$${\mathrm{B}}_{14}$). The value of ${T}_{C}$ of amorphous pure Fe has been extrapolated to about 220 K. Well-defined hyperfine field distributions ${P(H)}$ have been found. The mean hyperfine field is found to be proportional to the average Fe moment with a ratio of about 130 kOe/${\mathrm{\ensuremath{\mu}}}_{\mathrm{B}}$. The shape of $P(H)$ for each alloy is practically independent of temperature. At low temperatures, the effective hyperfine field (${H}_{\mathrm{eff}}$) shows a temperature dependence of ${H}_{\mathrm{eff}}(T)={H}_{\mathrm{eff}}(0)(1\ensuremath{-}B{T}^{\frac{3}{2}}\ensuremath{\cdots})$ due to spin-wave excitations. The value of ${B}_{\frac{3}{2}}=B{({T}_{C})}^{\frac{3}{2}}$ increases with Fe concentration. As the Fe concentration is increased in these alloys, the reduced hyperfine field decreases faster with reduced temperature due to a systematic change in the distribution of exchange interactions. A correlation of ${H}_{\mathrm{eff}}(0)$ and the isomer shift exists for crystalline and amorphous Fe-B systems. Crystalline ${\mathrm{Fe}}_{3}$B(${T}_{C}\ensuremath{\sim}800$ K) has been found after crystallizing amorphous samples with $xg75$ under high heating rates. At $Tl{T}_{C}$, ${\mathrm{Fe}}_{3}$B shows at least three magnetically inequivalent sites, whereas at $Tg{T}_{C}$, electric quadrupole interactions are observed. The crystal structure of ${\mathrm{Fe}}_{3}$B is likely to be tetragonal rather than orthorhombic.

185 citations


Authors

Showing all 76370 results

NameH-indexPapersCitations
Cornelia M. van Duijn1831030146009
Krzysztof Matyjaszewski1691431128585
Gary H. Glover12948677009
Mark E. Thompson12852777399
Ron Kikinis12668463398
James E. Rothman12535860655
Bo Wang119290584863
Wei Lu111197361911
Harold J. Vinegar10837930430
Peng Wang108167254529
Hans-Joachim Freund10696246693
Carl R. Woese10527256448
William J. Koros10455038676
Thomas A. Lipo10368243110
Gene H. Golub10034257361
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20231
202216
2021415
20201,027
20191,418
20181,862