نتایج جستجو برای: n 59
تعداد نتایج: 1031932 فیلتر نتایج به سال:
We introduce a new metric for dynamic range of displays that closely corresponds with human perception in practical settings. The Number of Distinguishable Grays is a count of the visible luminance steps from the deepest black to the brightest white a display produces under known ambient conditions.
PURPOSE The aim of this study is to assess the prevalence, the site and the nature of extra-mammary findings on breast magnetic resonance imaging (MRI) and to determine its accuracy in the characterization of the discovered lesions. MATERIALS AND METHODS A retrospective review of 308 female patients (mean age 50 ± 20) who underwent breast MRI with 1.5T device was performed. 125 out of 308 (40...
IN THE TITLE COMPOUND [SYSTEMATIC NAME: 3-(10,10-dimethyl-anthracen-9-yl-idene)-N,N,N-trimethyl-propanaminium chlor-ide], C(21)H(26)N(+)·Cl(-), the cyclo-hexane ring adopts a chair conformation. The dihedral angle between the terminal benzene rings is 40.43 (12)°. In the crystal, ions are linked through inter-molecular N-H⋯Cl and C-H⋯Cl hydrogen bonds, forming supra-molecular layers parallel to...
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