Utilización del software R para la enseñanza de la estadística: experiencia en un curso de ingeniería

A lo largo de las clases teóricas y prácticas en la cátedra “Estadística A” observamos ciertos conflictos para la comprensión de los conocimientos relacionados con la estadística descriptiva. Esto nos motivó a elaborar una herramienta facilitadora para la aprehensión, el desarrollo y el posterior análisis comparativo de los contenidos desarrollados. En este trabajo presentaremos la implementación de un curso con modalidad semi-presencial utilizando el software libre R como una herramienta didáctica; el mismo se llevo a cabo con un grupo de estudiantes de las carreras de Ingeniería Mecánica e Ingeniería Industrial dictado por docentes del Departamento de Matemática del área de Estadística de la Universidad Nacional del Sur. La experiencia se diagramó en dos etapas: presencial y no-presencial. La primera etapa se llevó a cabo en algunas clases prácticas de la materia que sirvieron para la presentación e implementación del software. El espacio de trabajo donde se desarrolló fue el laboratorio de informática del Departamento de Matemática de la Universidad Nacional del Sur. La segunda etapa consistió en que los alumnos resolvieran los ejercicios propuestos en los trabajos prácticos de la cátedra utilizando R, comparando los resultados con los obtenidos previamente en papel, finalizando con una puesta en común donde se analizaron las ventajas y desventajas de R. En esta instancia, también, realizamos una devolución individual de los trabajos entregados. Finalmente, como corolario de esta experiencia, podemos inferir que es posible seguir profundizando en los beneficios que brinda el software R en relación a la enseñanza de la estadística

Regular Consumption of Cocoa and Red Berries as a Strategy to Improve Cardiovascular Biomarkers via Modulation of Microbiota Metabolism in Healthy Aging Adults

The aim of the present study was to analyze the effects of cocoa flavanols and red berry anthocyanins on cardiovascular biomarkers, such as homocysteine, angiotensin-converting enzyme (ACE), nitric oxide (NO), flow-mediated vasodilation (FMD), blood pressure and lipid profile. Additionally, we aimed to ascertain their possible interactions with microbiota related metabolites, such as secondary bile acids (SBA), short-chain fatty acids (SCFA) and trimethylamine N-oxide (TMAO). A randomized, parallel-group study, single-blind for the research team, was performed on 60 healthy volunteers between the ages of 45 and 85, who consumed 2.5 g/day of cocoa powder (9.59 mg/day of total flavanols), 5 g/day of a red berry mixture (13.9 mg/day of total anthocyanins) or 7.5 g/day of a combination of both for 12 weeks. The group that had consumed cocoa showed a significant reduction in TMAO (p = 0.03) and uric acid (p = 0.01) levels in serum, accompanied by an increase in FMD values (p = 0.03) and total polyphenols. corrected by creatinine (p = 0.03) after the intervention. These latter values negatively correlated with the TMAO concentration (R = −0.57, p = 0.02). Additionally, we observed an increase in carbohydrate fermentation in the groups that had consumed cocoa (p = 0.04) and red berries (p = 0.04) between the beginning and the end of the intervention. This increase in carbohydrate fermentation was correlated with lower levels of TC/HDL ratio (p = 0.01), systolic (p = 0.01) and diastolic blood pressure (p = 0.01). In conclusion, our study showed a positive modulation of microbiota metabolism after a regular intake of cocoa flavanols and red berry anthocyanins that led to an improvement in cardiovascular function, especially in the group that consumed cocoa

Reversible adhesion by type IV pili leads to formation of permanent localized clusters

The formation of long-lived, multicellular clusters is a fundamental step in the physiopathology of many disease-causing bacteria. Experiments on abiotic surfaces suggest that bacterial colonization, including initial cluster formation, requires (1) irreversible adhesion, (2) cell proliferation, and (3) a phenotypic transition. However, here we show that on infection of a polarized MDCK epithelium, Pseudomonas aeruginosa (PA) forms long-lived – i.e., permanent – bacterial clusters without requiring irreversible adhesion, cell proliferation, or a phenotypic transition. By combining experiments and a mathematical model, we reveal that the cluster formation process is mediated by type IV pili (T4P). Furthermore, we unveil how T4P quantitatively operate during adhesion, finding that it is a stochastic process that involves an activation time, requires the retraction of pili, and results in reversible attachment. We explain how such reversible attachment process leads to the formation of permanent bacterial clusters and quantify the cluster growth dynamics.Fil: Pepe, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas; ArgentinaFil: Dea, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas; ArgentinaFil: Genskowsky Vargas, Camila Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas; ArgentinaFil: Capasso, Dario Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas; ArgentinaFil: Roset, Mara Sabrina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas; ArgentinaFil: Jager, Adriana Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas; ArgentinaFil: Peruani San Román, Fernando Miguel. Cergy-paris Universite (cergy-paris Universite); FranciaFil: Kierbel, Arlinet Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas; Argentin

Sustracción internacional de menores y violencia de género

[ES]La sustracción internacional de menores es el traslado de un menor a un país donde no reside llevado a cabo de forma ilícita dentro de un contexto de crisis familiar; además, constituye un delito tipificado en el artículo 225 bis del Código Penal, a cuyos efectos la sustracción puede tener una doble consideración: 1. Traslado ilícito del menor: uno de los progenitores traslada al menor a un lugar diferente al de su residencia sin consentimiento del progenitor con quien convive (otras personas o una institución, en su caso, a quien se confía su guarda o custodia). El fin de este traslado es obtener una resolución judicial que capacite al progenitor que lleva a cabo la sustracción a convivir legalmente con su hijo. 2. Retención ilícita del menor: se trata del supuesto en que el progenitor sustractor retiene al menor en un Estado diferente al de la residencia de los hijos

Autonomous cortisol secretion in patients with primary aldosteronism: prevalence and implications on cardiometabolic profile and on surgical outcomes

Purpose: The aim of this study was to evaluate the prevalence of autonomous cortisol secretion (ACS) in patients with primary aldosteronism (PA) and its implications on cardiometabolic and surgical outcomes. Methods: This is a retrospective multicenter study of PA patients who underwent 1 mg dexamethasone-suppression test (DST) during diagnostic workup in 21 Spanish tertiary hospitals. ACS was defined as a cortisol post-DST >1.8 μg/dL (confirmed ACS if >5 μg/dL and possible ACS if 1.8–5 μg/dL) in the absence of spe cific clinical features of hypercortisolism. The cardiometabolic profile was compared with a control group with ACS without PA (ACS group) matched for age and DST levels. Results: The prevalence of ACS in the global cohort of patients with PA (n = 176) was 29% (ACS–PA; n = 51). Ten patients had confirmed ACS and 41 possible ACS. The cardiometabolic profile of ACS–PA and PA-only patients was simil ar, except for older age and larger tumor size of the adrenal lesion in the ACS–PA group. When comparing the ACS–PA group (n = 51) and the ACS group (n = 78), the prevalence of hypertension (OR 7.7 (2.64–22.32)) and cardiovascular events (OR 5.0 (2.29–11.07)) was higher in ACS–PA patients than in ACS patients. The coexistence of ACS in patien ts with PA did not affect the surgical outcomes, the proportion of biochemical cure and clinical cure being similar between ACS–PA and PA-only groups. Conclusion: Co-secretion of cortisol and aldosterone affects almost one-thi rd of patients with PA. Its occurrence is more frequent in patients with larger tumors and advanced age. However, the cardiometabolic and surgical outcomes of patients with ACS–PA and PA-only are similar

Mortality from gastrointestinal congenital anomalies at 264 hospitals in 74 low-income, middle-income, and high-income countries: a multicentre, international, prospective cohort study

Summary Background Congenital anomalies are the fifth leading cause of mortality in children younger than 5 years globally. Many gastrointestinal congenital anomalies are fatal without timely access to neonatal surgical care, but few studies have been done on these conditions in low-income and middle-income countries (LMICs). We compared outcomes of the seven most common gastrointestinal congenital anomalies in low-income, middle-income, and high-income countries globally, and identified factors associated with mortality. Methods We did a multicentre, international prospective cohort study of patients younger than 16 years, presenting to hospital for the first time with oesophageal atresia, congenital diaphragmatic hernia, intestinal atresia, gastroschisis, exomphalos, anorectal malformation, and Hirschsprung’s disease. Recruitment was of consecutive patients for a minimum of 1 month between October, 2018, and April, 2019. We collected data on patient demographics, clinical status, interventions, and outcomes using the REDCap platform. Patients were followed up for 30 days after primary intervention, or 30 days after admission if they did not receive an intervention. The primary outcome was all-cause, in-hospital mortality for all conditions combined and each condition individually, stratified by country income status. We did a complete case analysis. Findings We included 3849 patients with 3975 study conditions (560 with oesophageal atresia, 448 with congenital diaphragmatic hernia, 681 with intestinal atresia, 453 with gastroschisis, 325 with exomphalos, 991 with anorectal malformation, and 517 with Hirschsprung’s disease) from 264 hospitals (89 in high-income countries, 166 in middleincome countries, and nine in low-income countries) in 74 countries. Of the 3849 patients, 2231 (58·0%) were male. Median gestational age at birth was 38 weeks (IQR 36–39) and median bodyweight at presentation was 2·8 kg (2·3–3·3). Mortality among all patients was 37 (39·8%) of 93 in low-income countries, 583 (20·4%) of 2860 in middle-income countries, and 50 (5·6%) of 896 in high-income countries (p<0·0001 between all country income groups). Gastroschisis had the greatest difference in mortality between country income strata (nine [90·0%] of ten in lowincome countries, 97 [31·9%] of 304 in middle-income countries, and two [1·4%] of 139 in high-income countries; p≤0·0001 between all country income groups). Factors significantly associated with higher mortality for all patients combined included country income status (low-income vs high-income countries, risk ratio 2·78 [95% CI 1·88–4·11], p<0·0001; middle-income vs high-income countries, 2·11 [1·59–2·79], p<0·0001), sepsis at presentation (1·20 [1·04–1·40], p=0·016), higher American Society of Anesthesiologists (ASA) score at primary intervention (ASA 4–5 vs ASA 1–2, 1·82 [1·40–2·35], p<0·0001; ASA 3 vs ASA 1–2, 1·58, [1·30–1·92], p<0·0001]), surgical safety checklist not used (1·39 [1·02–1·90], p=0·035), and ventilation or parenteral nutrition unavailable when needed (ventilation 1·96, [1·41–2·71], p=0·0001; parenteral nutrition 1·35, [1·05–1·74], p=0·018). Administration of parenteral nutrition (0·61, [0·47–0·79], p=0·0002) and use of a peripherally inserted central catheter (0·65 [0·50–0·86], p=0·0024) or percutaneous central line (0·69 [0·48–1·00], p=0·049) were associated with lower mortality. Interpretation Unacceptable differences in mortality exist for gastrointestinal congenital anomalies between lowincome, middle-income, and high-income countries. Improving access to quality neonatal surgical care in LMICs will be vital to achieve Sustainable Development Goal 3.2 of ending preventable deaths in neonates and children younger than 5 years by 2030

De los ojos verdes a la mitología greco-romana

Máster en Formación del Profesorado de Educación Secundari

Aplicación práctica de Marketing Ecológico a través de una campaña de concienciación escolar, sobre reforestación del cantón Morona, del Ministerio del Ambiente de Morona Santiago para el período 2011-2012

El presente proyecto trata de una aplicación práctica de marketing ecológico a través de una campaña de concienciación escolar sobre reforestación en el Cantón Morona, del Ministerio de Ambiente de Morona Santiago para el período 2011-2012” En el planteamiento del problema, podemos destacar la importancia del tema medioambiental en la Amazonía Ecuatoriana, con los altos porcentajes de deforestación causada por la tala indiscriminada de árboles; también las causas, consecuencias y soluciones del daño que éste realiza con serios cambios climáticos. En el estudio de mercado se determinó que existe un gran porcentaje de población de escolares y docentes con mucho desconocimiento en cuanto al tema; por ello es necesario la creación de una campaña de reforestación con el nombre Mi amigo “EL ÁRBOL”. Los resultados obtenidos en los estudios se utilizaron para el planteamiento de estrategias modernas, como la creación y representación de un audiovisual para la capacitación, haciendo conocer el problema de la deforestación y dando soluciones a estas falencias como el reciclaje; atractivas, con productos promocionales y creativas, con sketch para mejor entendimiento y aprendizaje de los estudiantes. Se finaliza con la práctica de reforestar en los establecimientos educativos haciendo conciencia y énfasis en la importancia de la actividad. Es por ello que se recomienda la realización de esta Aplicación práctica en todas las escuelas.The following Project is about a practical application of Ecological Marketing through school awareness campaings on reforestation in the Morona at the Morona Santiago Ministry of Environment. From the setting of the problem, we can stress the importance of the environmental topic at the Ecuadorian Amazon Region. We can notice the high percentages of deforestation caused by indiscrimate tree cutting down, and also the causes, consequences and solution for the damage that this causes by generating serious weather changes. From the study of the market, it was determined that exist a high percentage of school and teacher population with a high level of ignorance about this topic; that´s why, it is necessary the creation of a reforestation campaign whose name is My Friend, “The Tree”. The results obtained from the studies were used for the setting of modern strategies such as the creation and representation of an audiovisual for training by latting them know the deforestation problem and giving solutions for these shortcomings. For instance, recycling, attractive, with promotional and creative products and through sketch for better student learning and understanding. It is ended with reforestation practice at the Educational Centers by raising consciousness and emphasizing the importance of the activity. That´s why that it is recomendable the creation of this Practical Application throughout the country educational centers

La Menstruación como causa de ferropenia escuela 3 de Noviembre y colegio mixto Miguel Merchán Cuenca 1988-1989

Tecnólogo Médico en Laboratorio Clínico e HistopatologíaCuenc

Regular Consumption of Cocoa and Red Berries as a Strategy to Improve Cardiovascular Biomarkers via Modulation of Microbiota Metabolism in Healthy Aging Adults

The aim of the present study was to analyze the effects of cocoa flavanols and red berry anthocyanins on cardiovascular biomarkers, such as homocysteine, angiotensin-converting enzyme (ACE), nitric oxide (NO), flow-mediated vasodilation (FMD), blood pressure and lipid profile. Additionally, we aimed to ascertain their possible interactions with microbiota related metabolites, such as secondary bile acids (SBA), short-chain fatty acids (SCFA) and trimethylamine N-oxide (TMAO). A randomized, parallel-group study, single-blind for the research team, was performed on 60 healthy volunteers between the ages of 45 and 85, who consumed 2.5 g/day of cocoa powder (9.59 mg/day of total flavanols), 5 g/day of a red berry mixture (13.9 mg/day of total anthocyanins) or 7.5 g/day of a combination of both for 12 weeks. The group that had consumed cocoa showed a significant reduction in TMAO (p = 0.03) and uric acid (p = 0.01) levels in serum, accompanied by an increase in FMD values (p = 0.03) and total polyphenols. corrected by creatinine (p = 0.03) after the intervention. These latter values negatively correlated with the TMAO concentration (R = &minus;0.57, p = 0.02). Additionally, we observed an increase in carbohydrate fermentation in the groups that had consumed cocoa (p = 0.04) and red berries (p = 0.04) between the beginning and the end of the intervention. This increase in carbohydrate fermentation was correlated with lower levels of TC/HDL ratio (p = 0.01), systolic (p = 0.01) and diastolic blood pressure (p = 0.01). In conclusion, our study showed a positive modulation of microbiota metabolism after a regular intake of cocoa flavanols and red berry anthocyanins that led to an improvement in cardiovascular function, especially in the group that consumed cocoa