Resumo A atividade de picadas do Anopheles darlingi foi estudada por mais de um ano numa área endêmica de malária na BR-174 (Manaus/Boa Vista). Esta atividade foi documentada para demonstrar as mudanças estacionais na população e variação do ciclo nas estações do ano. São apresentadas as coletas mostrando o ciclo de picada dentro e fora das casas. O modelo foi constante na área estudada e verificou-se que a população de A. darlingi aumenta na estação seca. Com o aumento das chuvas há um declínio na população de anófeles e esta diminuição corresponde a um decréscimo estacional similar ao número de casos de infecção malárica.

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The prevalence of chloroquine-resistant falciparum malaria was determined for humans living at 28 different sites in the Brazilian Amazon. Blood samples obtained from each patient were defibrinated, placed in vials containing 0.5% glucose and or chloroquine and incubated for 24 hours at 39-40 degrees C without agitation. In vitro sensitivity of the parasite to four different concentrations of chloroquine was determined for each sample. After 24 hours of incubation, trophozoites of Plasmodium falciparum developed to schizonts in all control cultures (no chloroquine) as well as in 80.6, 48.4, 11.8 and 7.5% of the cultures containing 0.5, 1.0, 2.0, and 3.0 nmol chloroquine/ml blood, respectively. Chloroquine-resistant P. falciparum was found in blood samples from all 28 locations, indicating that such resistance is widely spread in the Brazilian Amazon.

Resumo O comportamento e as diferenças no ciclo do ataque do Anopheles darlingi Root, em três localidades diferentes brasileiras, foram comparadas e discutidas.

Laboratory capacity is an issue that has plagued education for more than a century. New buildings, late night classes, and virtual laboratories have offered transitory relief at great expense. Missouri University of Science and Technology is employing blended strategies to increase capacity and student success. Blended strategies expand learning workspaces so that learners conduct traditional laboratory activities in both traditional and nontraditional laboratory environments. This article focuses on the proof of concept pilot results from blending the first-semester general chemistry laboratory course, which validate the adoption of this strategy for increasing student volume.