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.

Technology, Image processing, X-rays, Magnetic fields, Tomography, Electromagnetic radiation, Radiology, Image Generation, Medical Diagnosis

---

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.

Electric power plants, Computer graphics, Cost control, Modeling, Data modeling software, Cost Reduction, Graphics System, Power Plants

---

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.

Methods, New York, Nuclear power plants, Radioactive decontamination

Similar abstracts:

• Abstracts: Computational model for a Belgian chemical engineering plant cost index. Comment on the 'analytic Delphi method.' (comment on H. Azani and R. Khorramshahgol, Engineering Costs and Production Economics, vol 20, p. 23, 1990)
• Abstracts: The conference method of redesign. Avoiding a conference train wreck. World Conference in Seattle a hit
• Abstracts: Aspirin and heroin: one man invents two pain relievers in two weeks. It's easy being green
• Abstracts: Fire guarding. When smoke gets in your eyes. No smoke without fire?
• Abstracts: The Castle Mall Shopping Centre, Norwich. Law Lords 'lessen the burden': the Lords' decision in favour of the Trafford Park Centre at Dumplington has wider national implications

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.