... The ringing detection method is based on finding the area where ringing effect is likely to appear and calculating the ratio of average edge-normal and edgetangential derivatives moduli in this area. ... In this work, we consider the problem of ringing effect detection and reduction in MRI images. ... After applying inverse Fourier transform, the frequency truncated data results in image with limited resolution and ringing effect near sharp edges. ... Edge width estimation. ... Basic edges detection...

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... All rights reserved 0006-3509/96 $24.00+ .00 PH: 80006-3509(96)00171-8 TYPES OF NON-LINEAR BEHAVIOUR OF THE SYSTEM OF ION TRANSFER ACROSS THE MEMBRANE ON EXPOSURE TO A WEAK ELECTRIC FIELD* · 1 · T. Yu. ... L.- x Fig. ... Changes in the concentration of protons in response to external periodic perturbation external action A = 0.003 and critical frequency frequencies, periodic oscillations take place, x and potassium ions y in the near-membrane layer by a weak electric field. ...

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... Working technology became a part of instruction for geophysical work in this region, prepared in the institute UkrVNIMI. ... The winter researches on the site Volodarskoje (Moscow region), polluted by a thick layer (up to 3 m) of chicken dropping . ... The field studies at Moscow oil refining factory in Kapotnja. ... Geophysical studies around oil refining factories in Samara region with a purpose of estimattion of oil pollution and search for hydrocarbons' secondary deposits . ...

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• TES. Conclusion

... 322, 347­351 (1997) ASTRONOMY AND ASTROPHYSICS The solar eclipse observed by Clavius in A.D. 1567 F.R. Stephenson1 , J.E. Jones2 , and L.V. Morrison 1 2 3 3 Department of Physics, University of Durham, DH1 3LE, UK Proudman Oceanographic Laboratory, Bidston Observatory, Birkenhead, Merseyside, L43 7RA, UK Royal Greenwich Observatory, Madingley Road, Cambridge, CB3 0EZ, UK Received 14 June 1996 / Accepted 17 September 1996 Abstract. ... The solar eclipse observed by Clavius in A.D. 1567 (a) 42. ...

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