Experimental generation and analysis of first-order TE and TM Bessel modes in free space.

We demonstrate the experimental generation at optical frequencies of the lowest- and first-order Bessel beams with TE and TM polarizations in free space by means of a Mach-Zehnder interferometer. The polarization and angular momentum properties of these waves are analyzed and discussed.

Sylvatic triatominae of the phyllosoma complex (Hemiptera: Reduviidae) around the community of Carrillo Puerto, Nayarit, Mexico.

Research on domestic and sylvatic triatomines within the community of Carrillo Puerto and neighboring areas of Nayarit, Mexico, documented that Triatoma longipennis (Usinger) and Triatoma picturata (Usinger) were infected with Trypanosoma cruzi (L.) in both habitats. T. picturata was the predominant species in both habitats. Mouse baited-traps increased the effectiveness of collecting sylvatic triatomines, which were difficult to sample by inspecting habitats such as burrows, caves, and cliffs. The colonization of sylvatic and peridomestic habitats by Triatoma, the occurrence of high rates of infection with T. cruzi and the possibility that bugs move between habitats may require modification of current control strategies in Mexico.

Autosomal dominant piebaldism and mental retardation syndrome associated with a t(1;2) (p22.1;q36).

A syndrome of piebaldism and mild to moderate mental retardation was present in 3 sibs and their father. Besides, the disorder was segregating concordantly with a t(1;2) (p22.1;q36). It is concluded that the syndrome is due, either by gene breakage or dysfunction, to the translocation.