General Electric

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

Automatically positioned focussed energy system guided by medical imaging

Abstract: An automatically positioned focussed energy transducer system facilitates medical procedures by allowing a physician to interactively view the position the focal point of a focussed energy transducer superimposed upon a medical image and computer generated model of internal structures of a patient. A tracking device tracks the position and orientation of the ultrasound transducer. A medical imaging system creates an image of internal structures of the patient near the location of the energy transducer. A general purpose computer either receives a model of internal structures constructed in advance, or employs a medical imaging device to create the model. The general purpose computer displays selected surfaces of the model in an orientation and view which coincides with the medical image acquired. A superposition device receives the position and orientation of the ultrasound transducer from the tracking device and superimposes a symbol on the images corresponding to the position of the energy transducer relative to the patient. The physician then selects an internal structure to be destroyed which the general purpose computer determines the locations which the focal point must scan in order to destroy the structure. An actuator, coupled to the general purpose computer causes the focal point of the energy transducer to scan these locations which the physician adjusts the intensity of energy provided to the focal point by an input device.

Online tracking of delivery status information over a computer network

Abstract: A method and system for tracking, over a computer network, orders placed with a supplier and shipped by any of a variety of different carriers, the tracking taking place entirely within the confines of the supplier's web site. By providing for electronic communication of delivery status information between a variety of different carriers and the supplier's server, the supplier is able to provide online tracking information to a customer regardless of the individual manner of delivery.

Apparatus and method for determining stress and strain in pipes, pressure vessels, structural members and other deformable bodies

Abstract: A method and apparatus for measuring stress and strain associated with a pipe, pressurized vessel (12), structural member or deformable body containing a flaw or stress concentration utilizes a laser beam (18) to illuminate a surface (14) being analyzed and an optical data digitizer (20) to sense a signal provided by a speckle pattern produced by the light beam reflected from the illuminated surface. One signal is received from the surface (14) in a reference condition and subsequent signals are received from the surface (14) after surface deformation. The optical data digitizer (20) provides the received signal to an image processor (98), and the processor stores the signals and correlates the deformed image received with the reference image and then sends this correlated information to a minicomputer (28) which performs mathematical analyses of the signal to determine stress and strain associated with the surface. The apparatus is constructed as one integral unit (34), and further includes a digital and tape display (30), as well as a television monitor (26) and an electro-optic range indicator (23).

Overturning and anchoring of monolayers

Abstract: SCIENCE is the official organ of the American Association for the Advancement of Science. Information regard-Southwestern Division of the American Association ing memnbership in the Association may be secured from for the Advancement of Science: VEON C. KIECH 505 the office of the permanent secretary in the Smithsonian. IN some studies of the mechanism of the flotation process made several years ago' monolayers of oleic acid were spread on water, and by a dipping process were deposited upon solid surfaces of glass, platinum, mica, calcite, sphalerite and galena. With each of these solids no monolayer was deposited on the down-trip into the water, but on the up-trip the surface came out of the water initially wet and on top of the water film there was a monolayer of oleic acid. After the draining out or evaporation of the water film the hydrophilic groups in the oriented oleic acid molecules were brought into contact with the solid surface to which they adhered more or less firmly, depending on the nature of the solid. Repeated dipping into a clean water surface, dusted lightly with tale, proved that for all the surfaces except mica little or none of the oleic acid monolayer escaped onto the water. Two methods were used for detecting and studying the properties of these deposited monolayers: observations of the lubricating properties and of the contact angles given by drops of water placed on the surface. The inonolayers on the solid surfaces had an enormous effect upon the static friction of small glass slid-ers placed on the surface. On glass without the film the sliding angle was over 600, but this was reduced to about 60 by the monolayer. Drops of water placed upon a clean surface of any of these solids spread over the surface, wetting it completely , thus giving a zero contact angle, 0. The clean surfaces are therefore hydrophilic. After the oleic acid monolayers had been deposited, the surfaces became hydrophobic and the contact angles depended greatly upon the character of the underlying solid. With nlica the angle was 180, 450 for glass, 650 for platinum, 700 for calcite, 820 for sphalerite and 860 for galena. Mica behaved differently from the other substances

Symmetric list processor

Abstract: A list processing system in which each list cell contains both a forward and a backward link as well as a datum is described. This system is intended for imbedding in higher level languages capable of calling functions and subroutines coded in machine language. The presentation is in the form of FORTRAN programs depending on only a limited set of “primitive” machine language subroutines which are also defined. Finally, a set of field, particularly character, manipulation primitives are given to round out the system.