Spondias tuberosa Arr., a fructiferous tree endemic to the northeast Brazilian tropical dry forest called Caatinga, accounts for numerous benefits for its ecosystem as well as for the dwellers of the Caatinga. The tree serves as feed for pollinators and dispersers as well as fodder for domestic ruminants, and is a source of additional income for local smallholders and their families. Despite it...

(Anatomy, ultrastructure and secretion of Hibiscus pernambucensis Arruda (Malvaceae) extrafl oral nectary). This paper reports on the extrafl oral nectary (EFN) of Hibiscus pernambucensis, a native shrub species occurring in mangrove and restinga along Brazil’s coastline. EFNs occur as furrows with a protuberant border on the abaxial surface veins of the leaf blade. Each nectary consists of num...

Holotype and paratype of Ascocotyle (Phagicola) rara Arruda, Muniz-Pereira et Pinto, 2002, a heterophyid trematode recently described on the basis of two worms collected by Lauro Travassos in 1921 in the intestine of Ixobrychus exilis (Gmelin) from Brazil, were studied. The morphology of the worms revealed their conspecificity with Ascocotyle (Phagicola) angeloi Travassos, 1928 found in the sam...

F. Garcia∗, O Rodriguez ∗, F. Guzman∗, H.Dias, J.D.T Arruda-Neto , and M.S. Hussein† Instituto de Fisica da Universidade de Sao Paulo C.P.63318, 05315-970 São Paulo, SP, Brazil A. K. Kerman Center for Theoretical Physics, Laboratory for Nuclear Science and Department of PhysicsMassachusetts Institute of Technology-Cambridge, Massachusetts 02139,USA July 29, 1999 Microscopic Combinatorial approa...

This paper presents a new non-invasive method to estimate the danger to which are exposed the patients suffering from Wolff-Parkinson-White (WPW) syndrome. Our aim is to provide reliable risk estimation, and to formulate its limitations. The first task is the localization of the accessory pathway (AcP), which we solved using the stepwise Arruda algorithm. After getting the AcP location it was p...