We show that residence time measures can be used to identify the geometrical and transmission properties of a defect along path. The model we study is based on one-dimensional simple random walk. sites lattice are regular, i.e., jumping probabilities same in each site, except for called defect, where different. At side an absorbing site present. by measuring fraction particles crossing channel ...

The behavior of individual molecules of R-phycoerythrin (RPE) was monitored by fluorescence imaging at various pHs and ionic strengths within the evanescent-field layer (EFL) at a water/fused-silica interface. Above the isoelectric point (pI), the individual protein molecules moved between exposures with random motion. As the pH approached the pI of the protein, the RPE molecules were partially...