Institution
General Electric
Company•Boston, 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 published on a yearly basis
Papers
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03 Sep 1991TL;DR: In this article, the position and orientation of an invasive device, such as a catheter, are measured with radio frequency fields and displayed stereoscopically, by superposition of a graphic symbol on static X-ray images obtained at two different view angles.
Abstract: During an X-ray procedure, the position and orientation of an invasive device, such as a catheter are measured with radio frequency fields and displayed stereoscopically. Instantaneous three-dimensional positions of the invasive device are displayed by superposition of a graphic symbol on static X-ray images obtained at two different view angles. The X-ray images are obtained only when deemed necessary by the operator to minimize X-ray dose. A single X-ray source and detector may be implemented since it is not necessary to obtain the X-ray images simultaneously.
226 citations
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TL;DR: In this article, it is shown that without increasing the maximum or hot spot temperature, transformers can be overloaded 1 per cent for each degree centigrade by which the ambient is below 30 deg.
Abstract: It is pointed out that safe loading of transformers by temperature requires not only an accurate knowledge of the thermal laws but also a knowledge of what is a safe temperature limit to be maintained continuously which condition seldom, if ever, happens with the present method of limiting the load to nameplate rating. In view of our present knowledge and experience the author questions the advisability of loading transformers continuously up to the present A. I. E. E. limit of 105 deg. cent. hot spot and argues for the establishment of a differential of 10 deg. cent. between the limit to be maintained continuously by means of overloads and the limit to be reached occasionally with rated load. In other words, for continuously maintained maximum temperatures the hot spot should not exceed 95 deg. cent. It is shown by the use of the thermal laws that without increasing the maximum or hot spot temperature, transformers can be overloaded 1 per cent for each degree centigrade by which the ambient is below 30 deg. cent. (air) for self-cooled transformers, 25 deg. (water) for water-cooled transformers. The results of laboratory aging tests conducted on class A insulations in air and in oil are given. These tests show that the rate of aging is roughly double for each 8 deg. cent. increase in temperature.
226 citations
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TL;DR: The results of the subsynchronous resonance test conducted on the number 2 turbine-generator at the Southern California Edison Company Mohave Generating Station are presented and discussed in this paper.
Abstract: The results of the subsynchronous resonance test conducted on the number 2 turbine-generator at the Southern California Edison Company Mohave Generating Station are presented and discussed Comparisons are made between measured and calculated torsional natural frequencies and mode shapes, and the damping associated with each torsional mode stimulated is presented at various loads In addition, the methods of stimulating the mechanical torsionals of the turbine-generator set are discussed along with a description of the instrumention system that was used to obtain the data
225 citations
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TL;DR: A novel bacterium designated strain MV1 was isolated from a sludge enrichment taken from the wastewater treatment plant at a plastics manufacturing facility and shown to degrade 2,2-bis(4-hydroxyphenyl)propane (4,4'-isopropylidenediphenol or bisphenol A).
Abstract: A novel bacterium designated strain MV1 was isolated from a sludge enrichment taken from the wastewater treatment plant at a plastics manufacturing facility and shown to degrade 2,2-bis(4-hydroxyphenyl)propane (4,4'-isopropylidenediphenol or bisphenol A). Strain MV1 is a gram-negative, aerobic bacillus that grows on bisphenol A as a sole source of carbon and energy. Total carbon analysis for bisphenol A degradation demonstrated that 60% of the carbon was mineralized to CO2, 20% was associated with the bacterial cells, and 20% was converted to soluble organic compounds. Metabolic intermediates detected in the culture medium during growth on bisphenol A were identified as 4-hydroxybenzoic acid, 4-hydroxyacetophenone, 2,2-bis(4-hydroxyphenyl)-1-propanol, and 2,3-bis(4-hydroxyphenyl)-1,2-propanediol. Most of the bisphenol A degraded by strain MV1 is cleaved in some way to form 4-hydroxybenzoic acid and 4-hydroxyacetophenone, which are subsequently mineralized or assimilated into cell carbon. In addition, about 20% of the bisphenol A is hydroxylated to form 2,2-bis(4-hydroxyphenyl)-1-propanol, which is slowly biotransformed to 2,3-bis(4-hydroxyphenyl)-1,2-propanediol. Cells that were grown on bisphenol A degraded a variety of bisphenol alkanes, hydroxylated benzoic acids, and hydroxylated acetophenones during resting-cell assays. Transmission electron microscopy of cells grown on bisphenol A revealed lipid storage granules and intracytoplasmic membranes.
225 citations
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TL;DR: In this article, the equations of motion of cracks in tensile and cleavage samples have been derived, assuming that the deformation of the sample is maintained constant after the critical condition for fracture has been attained.
Abstract: The equations of motion of cracks in tensile and cleavage samples have been derived, assuming that the deformation of the sample is maintained constant after the critical condition for fracture has been attained. It is shown that the behaviour of cracks in tensile samples depends on their initial size and that large cracks are, in one sense, more stable than small cracks. The behaviour of cracks of all sizes in cleavage samples is shown to resemble that of large cracks in tensile samples.
225 citations
Authors
Showing all 76370 results
Name | H-index | Papers | Citations |
---|---|---|---|
Cornelia M. van Duijn | 183 | 1030 | 146009 |
Krzysztof Matyjaszewski | 169 | 1431 | 128585 |
Gary H. Glover | 129 | 486 | 77009 |
Mark E. Thompson | 128 | 527 | 77399 |
Ron Kikinis | 126 | 684 | 63398 |
James E. Rothman | 125 | 358 | 60655 |
Bo Wang | 119 | 2905 | 84863 |
Wei Lu | 111 | 1973 | 61911 |
Harold J. Vinegar | 108 | 379 | 30430 |
Peng Wang | 108 | 1672 | 54529 |
Hans-Joachim Freund | 106 | 962 | 46693 |
Carl R. Woese | 105 | 272 | 56448 |
William J. Koros | 104 | 550 | 38676 |
Thomas A. Lipo | 103 | 682 | 43110 |
Gene H. Golub | 100 | 342 | 57361 |