in this paper, fe3o4-chitosan nanoparticles were prepared by the immobilization of chitosan on the surface of fe3o4 nanoparticles. then, the 5-substituted hydantoins were synthesized from the condensation of aldehyde derivatives, ammonium carbonate and zinc cyanide as a well-known cyanating agent by the magnetic fe3o4-chitosan nanoparticles under neat conditions. fe3o4-chitosan nanocatalyst as ...

Despite the fact that the teratogenic effects of phenytoin have been suggested in several case reports, the evidence for a possible oncogenic potential of phenytoin has not been widely recognized. Recently, neuroblastoma as well as other neuroectodermal and non-ectodermal tumors has been seen in several children exposed to phenytoin prenatally. Previous cases have been almost uniformly associat...

OBJECTIVE To understand the process of end-of-life care delivery to the families of elderly patients according to a Family Health Strategy (FHS) team, to identify the meanings the team attributes to the experience and to build a theoretical model. METHOD Symbolic Interactionism and Grounded Theory were applied. Fourteen professionals working in an FHS located in a country town in the state of...

Questionnaires adapted to the Brazilian reality (Primary Care Assessment Tool) to evaluate access to and use of services were distributed to 30 managers, 80 professionals and a random sample of 882 Family Health Strategy (FHS) users in São Luís in the state of Maranhão. The differences between the evaluations of managers, professionals and users were identified by the Kruskal-Wallis test and Du...

the adducts produced in the reaction between trialkyl phosphites and acetylenic esters were trapped by hydantoins to produce highly functionalized dialkyl 2-(2,5-dioxo-4,4-diphenylimidazolidin-1-yl) succinate in good yields.

BACKGROUND The Theory of Change (ToC) is a management and evaluation tool supporting critical thinking in the design, implementation and evaluation of development programmes. We document the experience of Future Health Systems (FHS) Consortium research teams in Bangladesh, India and Uganda with using ToC. We seek to understand how and why ToCs were applied and to clarify how they facilitate the...