Perivitelline space is the gap between the plasma membrane and zona pellucida of oocytes. Recently, it has been reported that the incidence of polyspermy in porcine and mouse oocytes with larger perivitelline space is significantly lower than those with small perivitelline space (Funahashi et al., 1994; Wang et al., 1998; Kitagawa and Niimura, 2006; Ueno and Niimura, 2008). Therefore, it has be...

10.2217/17460751.1.5.xxx © 2 oo f Evaluation of: Eggan K, Jurga S, Gosden R, Min IM, Wagers AJ. Ovulated oocytes in adult mice derive from non-circulating germ cells. Nature 441, 1109–1114 (2006) [5]. This interesting study investigates the hypothesis that stem cells in adult bone marrow and the circulatory system populate mouse ovaries and contribute to the germline. When pairs of GFP+ and GFP...

A Comment on the Letter by P. Schaaf and J. Talbot, Phys. Rev. Lett. 62, 175 (1989).

We present a defect-free lithography method for printing periodic features with nanoscale resolution using coherent extreme ultraviolet light. This technique is based on the self-imaging effect known as the Talbot effect, which is produced when coherent light is diffracted by a periodic mask. We present a numerical simulation and an experimental verification of the method with a compact extreme...

The random sequential adsorption (RSA) of infinitely-thin line segments is studied by computer simulation. It is shown that the exponent for the time dependence of the surface coverage increases beyond the value 0.33, recently reported by Sherwood, to a value of 0.38, at later times. It is also argued that the fractal dimension of the adsorbed lines is about 1.8, making use of a previous result...

An analysis of the filtering of the array modes in a resonant optical waveguide (ROW) array of antiguides by a diffractive spatial filter, a so-called Talbot filter, is presented. A dispersion relation is derived for the array modes enabling the calculation of the field distribution. The filtering is analyzed by calculating the field propagation of each array mode in an array structure with a T...

[1] M. Akil. Reconfigurable architecture for real-time image processing, special issue of Journal of Real-Time Image Processing. Springer-Verlag, 2008. [2] L. Najman and H. Talbot. Morphologie Mathématique : approches déterministes. Hermès, 2008. (255 pp.). [3] H. Talbot and L. Najman. Morphologie Mathématique : approches non-déterministes, mise en œuvre et applications. 2009. To appear. [4] J....

A recent framework for generalizing the Erdős-KoRado Theorem, due to Holroyd, Spencer, and Talbot, defines the Erdős-Ko-Rado property for a graph in terms of the graph’s independent sets. Since the family of all independent sets of a graph forms a simplicial complex, it is natural to further generalize the Erdős-Ko-Rado property to an arbitrary simplicial complex. An advantage of working in sim...