No abstract

La captura se realizó en el 2011, durante una etapa intensiva de control. Se determinó el estado de susceptibilidad a insecticidas de la cepa en estudio y se expuso a una CL95 de un aceite de trementina modificado por fotoisomerización y obtenido de Pinus tropicalis. Se obtuvo alta mortalidad larval y pupal en las larvas sobrevivientes de la exposición. Para la variante I se obtuvo un 70 % de inhibición y para la variante II un 68 %. Las hembras sobrevivientes de ambas variantes disminuyeron su fecundidad con respecto al control. No hubo afectación de la fertilidad.

No abstract

Samples of commercial activated carbons (AC) obtained from different sources: Norit E Supra USP, Norit B Test EUR, and ML (Baracoa, Cuba) were investigated. The adsorption of acetaminophen, Co = 2500 mg/L, occured in simulated gastric fluid (SGF) at pH 1.2 in contact with activated carbon for 4 h at 310 K in water bath with stirring. Residual acetaminophen was monitored by UV visible. The results were converted to scale adsorption isotherms using alternative models: Langmuir TI and TII, Freundlich, Dubinin-Radushkevich (DR) and Temkin. Linearized forms of the characteristic parameters were obtained in each case. The models that best fit the experimental data were Langmuir TI and Temkin with R2 ≥0.98. The regression best fits followed the sequence: Langmuir TI = Temkin > DR > LangmuirTII > Freundlich. The microporosity determined by adsorption of CO2 at 273 K with a single term DR regression presented R2 > 0.98. The adsorption of acetaminophen may occur in specific sites and also in the basal region. It was determined that the adsorption process of acetaminophen on AC in SGF is spontaneous (ΔG <0) and exothermic (−ΔHads.). Moreover, the area occupied by the acetaminophen molecule was calculated with a relative error from 7.8 to 50%.

The trisaccharide allyl 2-deoxy-2-phthalimido-6-O-[4-O-(2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl)-2,3,6-tri-O-benzoyl-β-D-glucopyranosyl]-β-D-glucopyranoside (3) was prepared directly from acceptor allyl 2-deoxy-2-phthalimido-β-D-glucopyranoside (1) and 4-O-(2,3,4,6- tetra-O-benzoyl-β-D-galactopyranosyl)-2,3,6-tri-O-benzoyl-α-D-glucopyranosyl trichloroacetimidate (2c) using regio- and stereoselective synthesis in dichloromethane with trimethylsilyl triflate as a promoter.