Economists have demonstrated the existence of a positive correlation between management quality and the country's economic performance. In turn, business simulation games have shown their educational effectiveness in developing management skills crucial for African countries. However, its use is still incipient. Although they present different characteristics favourable to its implementation, for example: The A...
Economists have demonstrated a positive correlation between management quality and the country's economic performance. In turn, business simulation games have shown their educational effectiveness in developing management skills crucial for African countries. However, its use is still nascent. Although they present different characteristics favorable to its implementation, for example, The African Continental F...
Made available in DSpace on 2020-12-10T16:29:24Z (GMT). No. of bitstreams: 0 Previous issue date: 1998-11-01; Bioactivity-guided fractionation from hexane extract of Himatanthus sucuuba barks utilizing Cladosporium sphaerospermum led to the isolation of iridoids plumericin and isoplumericin, which showed higher inhibition against C. sphaerospermum than the antibiotic nistatin. Besides bioactive iridoids were is...
Indole alkaloids ellipticine (1), cryptolepine triflate (2a), rationally designed 11-(4-piperidinamino)cryptolepine hydrogen dichloride (2b) and olivacine (3) (an isomer of 1) were evaluated in vitro against Plasmodium falciparum and in vivo in Plasmodium berghei-infected mice. 1-3 inhibited P. falciparum (IC50 ≤ 1.4 μM, order of activity: 2b > 1 > 2a > 3). In vitro toxicity to murine macrophages was evaluated ...
The yellow fever mosquito Aedes (Stegomyia) aegypti is the main vector of dengue arbovirus and other arboviruses. Dengue prevention measures for the control of A. aegypti involve mainly the use of synthetic insecticides. The constant use of insecticides has caused resistance in this mosquito. Alternative studies on plant extracts and their products have been conducted with the aim of controlling the spread of t...