Utopística agroecológica e innovaciones campesinas para la producción de maíz de secano

Se expone una utopística agroecológica sujetada conceptualmente en el manejo de maíz y epistémicamente en el dialogo de saberes basado en la aplicación de tecnologías para la producción de maíz, desigualmente desarrolladas en el tiempo. Fue validada con maiceros de Cohetzala y San Nicolás de los Ranchos, Puebla-México. Se halló que: en el manejo de maíz interaccionan innovaciones radicales y progresivas prevaleciendo las segundas; no hay relación entre el uso de innovaciones radicales y rendimientos, pero sí cuando se aplicaron tecnologías progresivas; 29% de los productores son eficientes en Cohetzala y 30% en San Nicolás, cuyo manejo está articulado al paradigma agroecológico; 82% de los productores de Cohetzala y 40% de San Nicolás no poseen seguridad alimentaria, pero si los productores de bajo y medio rendimientos usaran la utopística agroecológica, acreditada en el patrón tecnológico de los productores eficientes, sus rendimientos se potenciarían en 91-24% en Cohetzala y 157-38% en San Nicolás, respectivamente.The paper presents an agroecological utopistics held conceptually in handling the corn and epistemic knowledge dialogue, based on the unequal application of technologies for the production of corn developed over time. It was validated with maiceros of Cohetzala and San Nicolas de los Ranchos, Puebla-Mexico.It was found that: the corn interacts in managing radical and progressive innovations, latter prevail; there is not relationship between the use of innovation and performance.But when progressive technologies were applied; 29% of farmers are efficient in Cohetzala and 30% in San Nicolas, whose management is articulated to the agro-ecological paradigm; 82% of producers and 40% Cohetzala San Nicolas have no food security.The producers of low and middle income will use agro-ecological utopistics accredited of the technological pattern of efficient producers, which would be enhanced yields at 91-24% in Cohetzala and San Nicolas 157-38%, respectively.Eje: A1 Sistemas de producción de base agroecológica (Trabajos científicos)Facultad de Ciencias Agrarias y Forestale

Utopística agroecológica e innovaciones campesinas para la producción de maíz de secano

Se expone una utopística agroecológica sujetada conceptualmente en el manejo de maíz y epistémicamente en el dialogo de saberes basado en la aplicación de tecnologías para la producción de maíz, desigualmente desarrolladas en el tiempo. Fue validada con maiceros de Cohetzala y San Nicolás de los Ranchos, Puebla-México. Se halló que: en el manejo de maíz interaccionan innovaciones radicales y progresivas prevaleciendo las segundas; no hay relación entre el uso de innovaciones radicales y rendimientos, pero sí cuando se aplicaron tecnologías progresivas; 29% de los productores son eficientes en Cohetzala y 30% en San Nicolás, cuyo manejo está articulado al paradigma agroecológico; 82% de los productores de Cohetzala y 40% de San Nicolás no poseen seguridad alimentaria, pero si los productores de bajo y medio rendimientos usaran la utopística agroecológica, acreditada en el patrón tecnológico de los productores eficientes, sus rendimientos se potenciarían en 91-24% en Cohetzala y 157-38% en San Nicolás, respectivamente.The paper presents an agroecological utopistics held conceptually in handling the corn and epistemic knowledge dialogue, based on the unequal application of technologies for the production of corn developed over time. It was validated with maiceros of Cohetzala and San Nicolas de los Ranchos, Puebla-Mexico.It was found that: the corn interacts in managing radical and progressive innovations, latter prevail; there is not relationship between the use of innovation and performance.But when progressive technologies were applied; 29% of farmers are efficient in Cohetzala and 30% in San Nicolas, whose management is articulated to the agro-ecological paradigm; 82% of producers and 40% Cohetzala San Nicolas have no food security.The producers of low and middle income will use agro-ecological utopistics accredited of the technological pattern of efficient producers, which would be enhanced yields at 91-24% in Cohetzala and San Nicolas 157-38%, respectively.Eje: A1 Sistemas de producción de base agroecológica (Trabajos científicos)Facultad de Ciencias Agrarias y Forestale

Utopística agroecológica e innovaciones campesinas para la producción de maíz de secano

Se expone una utopística agroecológica sujetada conceptualmente en el manejo de maíz y epistémicamente en el dialogo de saberes basado en la aplicación de tecnologías para la producción de maíz, desigualmente desarrolladas en el tiempo. Fue validada con maiceros de Cohetzala y San Nicolás de los Ranchos, Puebla-México. Se halló que: en el manejo de maíz interaccionan innovaciones radicales y progresivas prevaleciendo las segundas; no hay relación entre el uso de innovaciones radicales y rendimientos, pero sí cuando se aplicaron tecnologías progresivas; 29% de los productores son eficientes en Cohetzala y 30% en San Nicolás, cuyo manejo está articulado al paradigma agroecológico; 82% de los productores de Cohetzala y 40% de San Nicolás no poseen seguridad alimentaria, pero si los productores de bajo y medio rendimientos usaran la utopística agroecológica, acreditada en el patrón tecnológico de los productores eficientes, sus rendimientos se potenciarían en 91-24% en Cohetzala y 157-38% en San Nicolás, respectivamente.The paper presents an agroecological utopistics held conceptually in handling the corn and epistemic knowledge dialogue, based on the unequal application of technologies for the production of corn developed over time. It was validated with maiceros of Cohetzala and San Nicolas de los Ranchos, Puebla-Mexico.It was found that: the corn interacts in managing radical and progressive innovations, latter prevail; there is not relationship between the use of innovation and performance.But when progressive technologies were applied; 29% of farmers are efficient in Cohetzala and 30% in San Nicolas, whose management is articulated to the agro-ecological paradigm; 82% of producers and 40% Cohetzala San Nicolas have no food security.The producers of low and middle income will use agro-ecological utopistics accredited of the technological pattern of efficient producers, which would be enhanced yields at 91-24% in Cohetzala and San Nicolas 157-38%, respectively.Eje: A1 Sistemas de producción de base agroecológica (Trabajos científicos)Facultad de Ciencias Agrarias y Forestale

4to. Congreso Internacional de Ciencia, Tecnología e Innovación para la Sociedad. Memoria académica

Este volumen acoge la memoria académica de la Cuarta edición del Congreso Internacional de Ciencia, Tecnología e Innovación para la Sociedad, CITIS 2017, desarrollado entre el 29 de noviembre y el 1 de diciembre de 2017 y organizado por la Universidad Politécnica Salesiana (UPS) en su sede de Guayaquil. El Congreso ofreció un espacio para la presentación, difusión e intercambio de importantes investigaciones nacionales e internacionales ante la comunidad universitaria que se dio cita en el encuentro. El uso de herramientas tecnológicas para la gestión de los trabajos de investigación como la plataforma Open Conference Systems y la web de presentación del Congreso http://citis.blog.ups.edu.ec/, hicieron de CITIS 2017 un verdadero referente entre los congresos que se desarrollaron en el país. La preocupación de nuestra Universidad, de presentar espacios que ayuden a generar nuevos y mejores cambios en la dimensión humana y social de nuestro entorno, hace que se persiga en cada edición del evento la presentación de trabajos con calidad creciente en cuanto a su producción científica. Quienes estuvimos al frente de la organización, dejamos plasmado en estas memorias académicas el intenso y prolífico trabajo de los días de realización del Congreso Internacional de Ciencia, Tecnología e Innovación para la Sociedad al alcance de todos y todas

Ghrelin and adipose-derived mesenchymal stromal cells improve nerve regeneration in a rat model of epsilon-caprolactone conduit reconstruction

Objective. Attempts have been made to improve nerve conduits in peripheral nerve reconstruction. We investigated the potential therapeutic effect of adipose-derived mesenchymal cells (ASCs) and ghrelin (GHR), a neuropeptide with neuroprotective, trophic, and developmental regulatory actions, on peripheral nerve regeneration in a model of severe nerve injury repaired with nerve conduits. Material and methods. The right sciatic nerves of 24 male Wistar rats were 10-mm transected unilaterally and repaired with Dl-lactic-ε-caprolactone conduits. Rats were then treated locally with saline, ASCs, or GHR. At 12 weeks post-surgery, we assessed limb function by measuring ankle stance angle and percentage muscle mass reduction and evaluated the histopathology, immunohistochemistry, ultrastructure, and morphometry of myelinated fibers. Main Results. Rats receiving GHR or ASCs showed no significant increased functional recovery in ankle stance angle (p=0.372) but a higher nerve area (p=0.015), myelin area (p=0.046) and number of myelinated fibers (p=0.012) in the middle and distal segments of operated sciatic nerves in comparison to saline-treated control animals. Conclusion. These results suggest that utilization of ghrelin or ASCs may improve nerve regeneration using Dl-lactic-ε-caprolactone conduits

Mexico ants: incidence and abundance along the Nearctic–Neotropical interface

International audienceto explore different aspects of the population and community research of ants at different spatial scales, and to aid in the establishment of conservation policies and actions. There are no copyright restrictions. Please cite this data paper when using its data for publications or teaching events

Mexico's Ants: Who are They and Where do They Live?

International audienc

Contemporary use of cefazolin for MSSA infective endocarditis: analysis of a national prospective cohort

Objectives: This study aimed to assess the real use of cefazolin for methicillin-susceptible Staphylococcus aureus (MSSA) infective endocarditis (IE) in the Spanish National Endocarditis Database (GAMES) and to compare it with antistaphylococcal penicillin (ASP). Methods: Prospective cohort study with retrospective analysis of a cohort of MSSA IE treated with cloxacillin and/or cefazolin. Outcomes assessed were relapse; intra-hospital, overall, and endocarditis-related mortality; and adverse events. Risk of renal toxicity with each treatment was evaluated separately. Results: We included 631 IE episodes caused by MSSA treated with cloxacillin and/or cefazolin. Antibiotic treatment was cloxacillin, cefazolin, or both in 537 (85%), 57 (9%), and 37 (6%) episodes, respectively. Patients treated with cefazolin had significantly higher rates of comorbidities (median Charlson Index 7, P <0.01) and previous renal failure (57.9%, P <0.01). Patients treated with cloxacillin presented higher rates of septic shock (25%, P = 0.033) and new-onset or worsening renal failure (47.3%, P = 0.024) with significantly higher rates of in-hospital mortality (38.5%, P = 0.017). One-year IE-related mortality and rate of relapses were similar between treatment groups. None of the treatments were identified as risk or protective factors. Conclusion: Our results suggest that cefazolin is a valuable option for the treatment of MSSA IE, without differences in 1-year mortality or relapses compared with cloxacillin, and might be considered equally effective

Make EU trade with Brazil sustainable

Brazil, home to one of the planet's last great forests, is currently in trade negotiations with its second largest trading partner, the European Union (EU). We urge the EU to seize this critical opportunity to ensure that Brazil protects human rights and the environment

Edoxaban versus warfarin in patients with atrial fibrillation

Contains fulltext : 125374.pdf (publisher's version ) (Open Access)BACKGROUND: Edoxaban is a direct oral factor Xa inhibitor with proven antithrombotic effects. The long-term efficacy and safety of edoxaban as compared with warfarin in patients with atrial fibrillation is not known. METHODS: We conducted a randomized, double-blind, double-dummy trial comparing two once-daily regimens of edoxaban with warfarin in 21,105 patients with moderate-to-high-risk atrial fibrillation (median follow-up, 2.8 years). The primary efficacy end point was stroke or systemic embolism. Each edoxaban regimen was tested for noninferiority to warfarin during the treatment period. The principal safety end point was major bleeding. RESULTS: The annualized rate of the primary end point during treatment was 1.50% with warfarin (median time in the therapeutic range, 68.4%), as compared with 1.18% with high-dose edoxaban (hazard ratio, 0.79; 97.5% confidence interval [CI], 0.63 to 0.99; P<0.001 for noninferiority) and 1.61% with low-dose edoxaban (hazard ratio, 1.07; 97.5% CI, 0.87 to 1.31; P=0.005 for noninferiority). In the intention-to-treat analysis, there was a trend favoring high-dose edoxaban versus warfarin (hazard ratio, 0.87; 97.5% CI, 0.73 to 1.04; P=0.08) and an unfavorable trend with low-dose edoxaban versus warfarin (hazard ratio, 1.13; 97.5% CI, 0.96 to 1.34; P=0.10). The annualized rate of major bleeding was 3.43% with warfarin versus 2.75% with high-dose edoxaban (hazard ratio, 0.80; 95% CI, 0.71 to 0.91; P<0.001) and 1.61% with low-dose edoxaban (hazard ratio, 0.47; 95% CI, 0.41 to 0.55; P<0.001). The corresponding annualized rates of death from cardiovascular causes were 3.17% versus 2.74% (hazard ratio, 0.86; 95% CI, 0.77 to 0.97; P=0.01), and 2.71% (hazard ratio, 0.85; 95% CI, 0.76 to 0.96; P=0.008), and the corresponding rates of the key secondary end point (a composite of stroke, systemic embolism, or death from cardiovascular causes) were 4.43% versus 3.85% (hazard ratio, 0.87; 95% CI, 0.78 to 0.96; P=0.005), and 4.23% (hazard ratio, 0.95; 95% CI, 0.86 to 1.05; P=0.32). CONCLUSIONS: Both once-daily regimens of edoxaban were noninferior to warfarin with respect to the prevention of stroke or systemic embolism and were associated with significantly lower rates of bleeding and death from cardiovascular causes. (Funded by Daiichi Sankyo Pharma Development; ENGAGE AF-TIMI 48 ClinicalTrials.gov number, NCT00781391.)