منابع مشابه
3. Dixon
NATURE | VOL 411 | 14 JUNE 2001 | www.nature.com 843 Collectively, plants produce a remarkably diverse array of over 100,000 low-molecular-mass natural products, also known as secondary metabolites. Secondary metabolites are distinct from the components of intermediary (primary) metabolism in that they are generally nonessential for the basic metabolic processes of the plant. Most are derived f...
متن کاملDixon Reconstruction
This approach is particularly important at lower field strengths, where it is the preferred method of lipid suppression. At 0.5T and below, chemically selective excitation or saturation is impractical since the small fat/water spectral shift would require a very long RF pulse. For example, the minimum time for a spectral-spatial pulse at 0.5T is about 24 ms. Inversion recovery methods become le...
متن کاملCS-Dixon: Compressed Sensing for Water-Fat Dixon Reconstruction
Introduction: Water-fat separation is of interest in several MRI applications including fat suppression and fat quantification. Chemical shift imaging allows robust water-fat separation [1, 2], however the acquisition of multiple images results in prolonged scan time. Accelerated water-fat separation using compressed sensing (CS) was partly addressed in [3] by considering the separation as a sp...
متن کاملHybrid Dixon Resultants
Dixon 1908] describes three distinct homogeneous determinant representations for the resultant of three bivariate polynomials of bidegree (m; n). These Dixon resultants are the determinants of matrices of orders 6mn, 3mn and 2mn, and the entries of these matrices are respectively homogeneous of degrees 1, 2, and 3 in the coeecients of the original three polynomial equations. Here we mix and mat...
متن کاملAndrew Francis Dixon (1868-1936)
Andrew Francis Dixon studied human anatomy and egg [2] cells at the turn of the twentieth century in Ireland and Great Britain. Dixon studied the sensory and motor nervous system of the face, the cancellous bone tissue of the femur, supernumerary kidneys, and the urogenital system. In 1927 Dixon described a mature human ovarian follicle. This follicle, Dixon noted, contained an immature human e...
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ژورنال
عنوان ژورنال: Science
سال: 1920
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.51.1327.558