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Macroencuesta latinoamericana de comunicación y relaciones públicasLatin American macro-survey of communication and public relations Macropesquisa latino-americana de comunicação e relações públicas J u a n C a r l o s M o l l e d a La "Macroencuesta latinoamericana de comunicación y relaciones públicas" (LatAmCom 2009) investiga las tendencias, el profesionalismo y los roles sociales de la profesión en diez países a través de las opiniones de una muestra representativa de profesionales. La sección del cuestionario sobre tendencias fue articulada originalmente por el European Communication Monitor. Esto permitirá comparaciones entre los dos continentes. PALABRAS CLAVES: RELACIOnES PUBLICAS • PROFESIOnALISMO • PAPEL SOCIAL • TEnDEnCIAS AbstractThe "Latin American macro-survey of communication and public relations" (LatAmCom 2009) investigates the trends, the professionalism, and social roles of the profession in ten countries through opinions of a representative sample of professionals. The questionnaire's section on trends was originally organized by the European Communication Monitor, which will enable comparisons between the two continents.

Estudio clínico epidemiológico de bartonelosis humana en el valle del Monzón, Huamalíes, Huánuco

Background: Inquiry-based teaching (IBT) and improving school climate are the two most commonly used strategies for fostering learning and critical thinking skills in students. IBT has positioned itself as one of the most recommended "active" methodologies for developing intellectual autonomy and complex thought processes, whereas school climate is considered to be a protective factor that helps mitigate adverse conditions and has a positive impact on teaching and learning. This study investigates the relationship between IBT and school climate with the academic performance of Colombian students in the PISA 2015 test. Results: Using a two-level Hierarchical Linear Modeling (HLM), the results show a negative association between IBT and students' scientific performance in the test. However, results show a positive association between IBT and students' self-reported critical thinking skills. Results also show that school climate is a positive moderating factor on learning. Contextual factors such as the student's grade level at the time of sitting for the PISA test, gender, and socioeconomic characteristics are strong predictors of science achievement in PISA. Conclusions: These results reveal the need for additional research on the effect of the so-called active methodologies and school context on student learning. Regarding IBT, it seems that its influence is greater on student's perception and motivation, than in acquisition of scientific knowledge. Positive school climate is a protective factor that can help to improve student learning. In Colombia, the quality of students' educational outcomes has largely been attributed to their socioeconomic background. However, the results of this study show that, although students' and schools' socioeconomic characteristics continue to be strong predictors of academic performance, teaching practices can have an even larger impact.

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Snakebites inflicted by the arboreal viperid snake Bothriechis schlegelii in humans are characterized by pain, edema, and ecchymosis at the site of the bite, rarely with blisters, local necrosis, or defibrination. Herein, a comparative study of Bothriechis schlegelii snake venoms from Colombia (BsCo) and Costa Rica (BsCR) was carried out in order to compare their main activities and to verify the efficacy of Bothrops antivenom produced in Brazil to neutralize them. Biochemical (SDS-PAGE and zymography) and biological parameters (edematogenic, lethal, hemorrhagic, nociceptive, and phospholipase A activities) induced by BsCo and BsCR snake venoms were evaluated. The presence of antibodies in Bothrops antivenom that recognize BsCo and BsCR snake venoms by enzyme-linked immunosorbent assay and Western blotting, as well as the ability of this antivenom to neutralize the toxic activities were also verified. SDS-PAGE showed differences between venoms. Distinctive caseinolytic and hyaluronidase patterns were detected by zymography. BsCo and BsCR showed similar phospholipase A activity. Strong cross-reactivity between BsCo and BsCR was detected using Bothrops antivenom with many components located between 150 and 35 kDa. BsCR was more edematogenic and almost fourfold more hemorrhagic than BsCo, and both venoms induced nociception. BsCR (LD 5.60 mg/kg) was more lethal to mice than BsCo (LD 9.24 mg/kg). Bothrops antivenom was effective in the neutralization of lethal and hemorrhagic activities of BsCo and BsCR and was partially effective in the neutralization of edematogenic and nociceptive activities. In conclusion, geographic distribution influences the composition and activities of Bothriechis schlegelii venoms. Bothrops antivenom cross-reacted with these venoms and was partially effective in neutralizing some toxic activities of BsCo and BsCR.