Nuclear Magnetic Resonance: Beyond Physical Imaging
Article Abstract:
Nuclear magnetic resonance (NMR) systems can generate images with intensities that are variable for different properties without using ionizing radiation. In NMR, an external magnetic field aligns hydrogen atoms' nuclear magnetic fields under examination. The relaxation times of the nuclei vary for different tissue types, thus are clues to disease. Magnetic field gradients label parts of the sample with different resonant frequencies to obtain an image. Development of NMR is going on all over the world, and recently, advances have been made in three-dimensional NMR imaging, snapshot imaging, and imaging at higher magnetic-field strengths. Diagrams illustrate the techniques of NMR, decay times and signals for various tissues, and the main hardware elements of an NMR imager.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1983
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Modeling power plants
Article Abstract:
Using advanced graphics software tools to design and maintain power plants can save from one to five percent of total plant cost, or $25 million for an average 500-megawatt coal-burning plant. Fluor Daniel Inc, Bechtel National Inc and Union Carbide Corp are among the six percent of all architectural engineering firms utilizing CAD. Structural blueprints of electric systems, piping, structures, heating, ventilation and air conditioning, and site layout are among the tasks being accomplished. Specific modules for each area of plant design are available.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1987
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Slowing the aging of nuclear power plants
Article Abstract:
Chemical decontamination of the nuclear plant at Indian Point 2, near New York, taken up in Feb 1995, by using the AP/Can-Derem process may lower the radiation field levels within the plant by 80%. The process has been found to be efficient in removing radioactive metal-oxide deposits from the surfaces of the reactor coolant system. The decontamination solution used in this remote-controlled process can be regenerated.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1995
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