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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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Journal ArticleDOI
TL;DR: In this article, the mathematical basis of calculations of energy bands in periodic lattices using the Green's function method is presented and the usefulness of the method's usefulness discussed, and the original formulation by Kohn and Rostoker is modified to achieve more efficient and accurate evaluation of "structure constants" using symmetry considerations and the full Ewald summation procedure.
Abstract: The mathematical basis of calculations of energy bands in periodic lattices using the Green's function method is presented and the method's usefulness discussed. The original formulation of the method by Kohn and Rostoker is modified to achieve more efficient and accurate evaluation of "structure constants" using symmetry considerations and the full Ewald summation procedure. Formulas are derived giving the wave function both inside and outside the sphere inscribed in the unit cell. The method is demonstrated with the 3-dimensional Mathieu potential. Convergence is found to be very rapid both in this test case and in practical calculations on metals, and accurate energies and wave functions can be obtained without elaborate calculation even at points of low symmetry within the Brillouin zone.

233 citations

Patent
13 Feb 1979
TL;DR: In this paper, a composite compact for tools, such as cutting, drilling, wire drawing and shaping tools, consists essentially of a porous mass of self-bonded, boron-doped diamond particles and a catalyst-solvent material.
Abstract: In one embodiment, a compact for tools, such as cutting, drilling, wire drawing and shaping tools, consists essentially of a porous mass of self-bonded, boron-doped diamond particles and a catalyst-solvent material. The method for making such a compact comprises the steps of bonding a mass of boron-doped diamond particles, aided by a catalyst-solvent material, under high temperatures and high pressures (HP/HT). In another embodiment, a composite compact, which is made in a similar manner to the first embodiment, consists essentially of (i) a layer of a porous mass of self-bonded, boron-doped diamond particles and catalyst-solvent material; and (ii) a substrate layer of cemented carbide bonded to the diamond layer.

232 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the deformation properties of the superalloy Rene 88 DT alloys with small-strain (0.2-0.5%) creep at 650°C using conventional and high-resolution transmission electron microscopy.

232 citations

Journal ArticleDOI
TL;DR: In this paper, the size distribution of the small particles has been determined from electron micrographs and the electrical characteristics of tunnel junctions were measured in the temperature range 1-300\ifmmode^\circ\else\text degree\fi{}K and in magnetic fields up to 100 kOe.
Abstract: We have prepared tunnel junctions which contain small Sn particles imbedded in the oxide barrier. The size distribution of the small particles has been determined from electron micrographs. The electrical characteristics of these junctions were measured in the temperature range 1-300\ifmmode^\circ\else\textdegree\fi{}K and in magnetic fields up to 100 kOe. All junctions show a large temperature-dependent resistance peak at zero bias and at low temperatures. The resistance peak increases in magnitude when the Sn particles are made superconducting. A simple model based upon the capacitance of the particles can account quantitatively for this behavior. We believe that a simple extension of this model can account for at least some of the previously reported zero-bias resistance anomalies. From the experiment, it is also possible to extract information about the superconductivity of small particles. We find that Sn particles down to at least a radius $r\ensuremath{\sim}25$ \AA{} are superconducting. The transition temperature of the particles increases with decreasing particle size and reaches 4.2\ifmmode^\circ\else\textdegree\fi{}K for particles with $r\ensuremath{\sim}70$ \AA{}, compared with ${T}_{c}=3.7\ifmmode^\circ\else\textdegree\fi{}$K for bulk Sn. In the radius range $rg100$ \AA{}, the critical field of the particles can be described in terms of a theory by De Gennes and Tinkham. Smaller particles have a much higher critical field, which increases more rapidly with decreasing radius than predicted by that theory.

232 citations

Patent
Donald D Hinman1
05 Oct 1942
TL;DR: In this article, electric discharge devices are used as sources of radiation for various purposes, including ultraviolet rays as well as visible light, and are particularly useful for purposes requiring a concentrated source of rather high intrinsic brilliance, including projection lamps.
Abstract: This invention relates to electric discharge devices useful as sources of radiation for various purposes, including ultraviolet rays as well as visible light It is particularly useful for purposes requiring a concentrated source of rather high intrinsic brilliance, including projection lamps

232 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