A total of 115 different plant extracts from our collection, representing 96 plant species, have been evaluated for in vitro antileishmanial activity against L. amazonensis promastigotes. In addition, the extracts were screened for cytotoxic activity against BALB/c mouse macrophages in order to assess a selectivity index. Crude extracts that showed a selectivity index (CC50 for macrophage / IC5...

As a major structural dynamic criterion in designing thin shells, the fundamental frequency is maximized for a specified total structural mass. The general optimization problem of metallic conical shell structures with clamped / free ends has been treated formally among all other types of boundary conditions. Both stiffened and unstiffened constructions are examined with the effective design va...

Los sistemas tradicionales en las zonas productoras de café (Coffea arabica) se desarrollan ecosistemas bajo sombra, con amplia diversidad especies flora y fauna. En la actualidad, composición florística original ha modificado por cambios el establecimiento Inga spp. Por lo anterior, surge importancia conocer estructura arbórea actual del sistema agroforestal cultivo Soconusco, Chiapas. Para ta...

physiology, especially those papers emphasizing adaptive and integrative mechanisms. It is published 12 times a publishes original papers that deal with diverse area of research in applied

27. Hefez A. The role of the press and the medical community in the epidemic of "mysterious gas poisoning" in the Jordan West Bank. Am J Psychiatry 142:833-837 (1985). 28. Faust H, Brilliant L. Is the diagnosis of "mass hysteria' an excuse for incomplete investigation of low-level environmental contamination? J Occup Med 23:22-26 (1981). 29. Donnell HD Jr, Bagby JR, Harmon RG, Crellin JR, Chask...

Galactosaemia was originally described by von Reuss in 1908 and since then a number of cases have been reported. From a study of these a fairly characteristic picture is presented, the most constant features being failure to thrive, hepatomegaly, galactosua and albuminuria. Other less constant features are mental retardation, jaundice, vomiting, cataract, pyrexia, diarrhoea and a tendency to bl...

The aim of this paper is to determine the critical buckling load for simply supported thin shallow spherical shells made of functionally graded material (FGM) subjected to uniform external pressure. A metal-ceramic functionally graded (FG) shell with a power law distribution for volume fraction is considered, where its properties vary gradually through the shell thickness direction from pure me...

in this paper the meshless local petrov-galerkin (mlpg) method is implemented to study the buckling of isotropic cylindrical shells under axial load. displacement field equations, based on donnell and first order shear deformation theory, are taken into consideration. the set of governing equations of motion are numerically solved by the mlpg method in which according to a semi-inverse method, ...

Congenital galactosaemia is now a well recognized inborn error of metabolism and over 45 cases have been *recorded (Andersen, 1957; Bennett, 1958). The underlying defect is the absence of the enzyme phospho-galactose uridyl transferase (Isselbacher, 1957), which catalyses the first stage of the conversion of galactose-l-phosphate to glucose; this results in an inability to metabolize galactose,...