نتایج جستجو برای: diameter distribution pattern
تعداد نتایج: 1023538 فیلتر نتایج به سال:
BACKGROUND Signet ring cell carcinoma of the colon and rectum is rare, and most cases are detected at an advanced stage. We present a case of primary signet ring cell carcinoma detected at an early stage by magnifying endoscopy with narrow-band imaging (NBI) and crystal violet staining. CASE PRESENTATION A 73-year-old man visited our hospital for screening colonoscopy. Six years previously, h...
Teleocichla wajapi, new species, is described from the rio Jari basin, northern Brazil. The new species differs from its congeners by possessing four anal-fin spines, 56-62 scales in El series, smaller orbital diameter (24.6-30.2% of head length) and barred or zigzag color pattern on flanks. New information on the morphology and distribution of T. centrarchus is provided based on recently colle...
In this study a methodology for the experimental determination of probabilistic characteristics induced by injection molding short-fibre reinforced composites is presented. This approach based on pattern recognition algorithm fibre detection two-dimensional micrograph. Since fibres are elliptic shape when dealing with arbitrary oriented cross-section, method ellipses used. The stochastic micros...
We have examined fractal patterns formed by the injection of air into oil in a thin (0.127 mm) layer contained between two cylindrical glass plates of 288 mm diameter (a Hele-Shaw cell), for pressure differences in the range 0.25 < or = DeltaP < or = 1.75 atm. We find that an asymptotic structure is reached at large values of the ratio r/b, where r is the pattern radius and b the gap between th...
BACKGROUND A better understanding of the relationship between stand structure and productivity is required for the development of: a) scalable models that can accurately predict growth and yield dynamics for the world's forests; and b) stand management regimes that maximize wood and/or timber yield, while maintaining structural and species diversity. METHODS We develop a cohort-based canopy c...
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