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
More filters
••
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
•
13 Feb 1979TL;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
••
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
••
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
•
05 Oct 1942TL;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
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 |