Uma nova Rauia (Rutaceae) da Amazônia Brasileira

Transferências intergeracionais privadas na Amazônia rural brasileira.

What motivates family members to share resources? Past research argues for, on the one hand, love and altruism, and on the other, the expectation of reciprocity. Drawing on this literature, this paper examines intergenerational transfers between small farmers and their non-coresident children in the rural area around the city of Altamira, Pará, Brazil. We apply GoM (Grade of Membership) models ...

O espectro de uma terceira onda: questões e desafios da educação formal em IHC em uma instituição brasileira

We present in this article some reflections on the challenges of developing an HCI education aligned on the so called HCI third wave. We discuss the necessary perspective of such an endeavor in order to ground a curriculum reformulation under development at UTFPR, Curitiba. We address the tensions between the established curricula recommendations from one side, and the cultural, axiological, po...

Ciclo de Vida das Capacidades de Tecnologia da Informação na Trajetória dos Sistemas Integrados de uma Universidade Brasileira

Assessing the quality of a scientific journal: the case of Revista Brasileira de Psiquiatria Avaliando a qualidade de uma revista científica: o caso da Revista Brasileira de Psiquiatria

Scientific production in the field of Psychiatry is growing exponentially, as reflected by the number of scientific journals now available. Current strategies to objectively estimate the quality of a specific publication are mostly based on indexation and citation criteria. The concept of impact factor, a measure of the frequency with which an article has been cited in a particular period, is k...

A novel 3,9-(1,2,3-trioxocine)-type steroid of Rauia nodosa (Rutaceae).

A new natural product, a 3,9-(1,2,3-trioxocine)-type steroid, named rauianodoxy (6), was isolated from Rauia nodosa, together with five steroids: sistostenone (1), stigmastenone (2), sitosterol (3), stigmasterol (4) and ergosterol peroxide (5), one coumarin, O-geranylosthenol (7), and three alkaloids, N-methylflindersine (8), zantobungeanine (9) and veprissine (10). Compounds 5-8 were isolated ...