A liquid developer includes an insulating liquid and toner particles obtained by surface-modifying toner mother particles made of a material containing a rosin resin with a polyalkyleneimine. The software application is a graphical user interface that includes a display region used for banner advertising that is downloaded from time to time over a network such as the Internet. An electronic apparatus is further provided in the disclosure. The methods can include the use of a microarray to analyze gene or protein profiles from a sample. Alternatively, generalized Gaussian quadrature is performed where an analytical polynomial function which accounts for the effect of the Wood anomaly present within the aperture space is integrated. The tactile sensor includes an array of conducting tracks extending in an edge zone intended to be folded, along fold lines.