meaning. A number of objects or events is non-symbolic; there are as many objects or events as the number denotes. In numerical experiments, nonsymbolic numbers are mostly presented as a pattern of dots, which are also called numerosities. When processing numerical stimuli, two classical effects are omnipresent (Dehaene, Dehaene-Lambertz & Cohen, 1998). The distance effect refers to the phenome...

In this work, we show that by varying the experimental conditions, the driving amplitude, a dynamic force microscope allows DNA properties to be selectively imaged. The substrate on which the DNA is fixed is a silica surface grafted with silane molecules terminated with amine groups. Use of small oscillation amplitudes favors the attractive interaction between the tip and the sample, while the ...