Ellipse center extraction is the important basis of camera calibration with circle arrays calibration board, which directly affects the measurement accuracy of machine vision system.Aiming at the problem of high noise sensitivity of the most ellipse center extraction methods, a high robust Camera Accessories multi-ellipse center extraction method i
Damage modelling in concrete subject to sulfate attack
In this paper, we consider the mechanical effect of the sulfate attack on concrete.The durability analysis of concrete structures in contact to external Canine - CratesPens sulfate solutions requires the definition of a proper diffusion-reaction model, for the computation of the varying sulfate concentration and of the consequent ettringite formati
Cyrtomium adenotrichum (Dryopteridaceae), a new species from Guangxi, China
Cyrtomium adenotrichum Y.Nong & R.H.Jiang (Dryopteridaceae), a new species from Guangxi, China, is described and illustrated.This new species is similar to C.nephrolepioides (Christ) Copel., C.obliquum Ching & K.H.Shing ex K.H.Shing, Camera Accessories C.sinningense Ching & K.H.Shing ex K.H.Shing and C.calcis Liang Zhang, N.