Molecular self-recognition: a chiral [Mn(II)6] wheel via donor-acceptor π···π contacts and H-bonds.

A multinucleating ligand capable of establishing different types of intermolecular interactions, when combined with acetate groups leads to the assembly of a chiral [Mn(II)3] cluster poised for a process of self-recognition through a combination of perfectly complementary weak forces.

Raciones de desayuno y almuerzo entregadas a preescolares por el Programa de Alimentación Escolar (PAE): calorías aportadas y consumidas / National School Food Program: calories provided and consumed by preschool children for breakfast and lunch

Chile's School Feeding Program delivers approximately 215,000 and 1.3 million breakfast and lunch trays daily to preschool and school children attending public schools. In 2011 we carried out a study with the objective to determine Kcal provided and consumed from breakfast and lunch trays respectively, acceptance" of the preparations and assess if there was an association between K cal consumed and nutritional status. The sample included 199 5 y old children from 6 schools located in 3 low income districts of Santiago (2 per district). K cal consumed was determined by the difference in weight of each preparation from 429 and 1491 breakfast and lunch trays, respectively. Almost 50% of the children were overweight. 10.8% and 30% of the breakfast and lunch trays respectively provided less K cal than indicated, while in 50% of them, there was an excess. In 22.5% of breakfast and lunch trays added together, consumption exceeded the amount indicated. The correlation between consumption of the preparation and acceptance was good. Salads showed low acceptability. No relation was found between K cal consumed and nutritional status. This program should include a revision of the combination of food preparations and their correct portioning as a means of addressing the high prevalence of childhood obesity.

El Programa de Alimentación Escolar de Chile (PAE) entrega diariamente 215.000 raciones de desayuno y almuerzo a preescolares y 1.3 millones a escolares de escuelas públicas y subvencionadas del país. El año 2011 efectuamos un estudio cuyo objetivo fue determinar las Kcal aportadas y consumidas en el desayuno y almuerzo, determinar si las preparaciones les gustaban a los niños y verificar si habría una relación entre Kcal consumidas y estado nutricional. La muestra incluyó a 199 niños de 5 años de 6 escuelas de 3 comunas (2 por comuna) de nivel bajo de Santiago. Se determinaron las K cal consumidas por la técnica de pesaje por diferencia en 429 y 1491 bandejas de desayuno y almuerzo respectivamente. Cerca del 50% de los niños tenía sobrepeso. En 10,8% y 30% de las bandejas de desayuno y almuerzo respectivamente el aporte calórico fue inferior a lo indicado; en 50% fue superior. En 22,5 % de las bandejas de ambos servicios, el consumo fue superior a lo establecido. Hubo una buena correlación entre consumo de la preparación y si les gustó. Las ensaladas mostraron baja aceptabilidad. No hubo relación entre estado nutricional y el consumo de calorías. Frente a la alta prevalencia de obesidad, se recomienda revisar la combinación de preparaciones y el porcionamiento de éstas.

Agua de clavo (Sizigium aromaticum) en el trabajo de parto / Water nail (Sizigium aromaticum) in labor

Objetivos: describir los efectos obstétricos de la infusión de clavo en el trabajo de parto. Método: se estudiaron 63 pacientes que habían ingerido agua de clavo y 184 que no. A todas se les dió seguimiento monitorizando la frecuencia cardíaca fetal, características de las contracciones (frecuencia e intensidad), y se registraron las características del líquido amniótico, tipo de parto y resultado perinatal...

Multimodal BCI-mediated FES suppression of pathological tremor.

Tremor constitutes the most common movement disorder; in fact 14.5% of population between 50 to 89 years old suffers from it. Moreover, 65% of patients with upper limb tremor report disability when performing their activities of daily living (ADL). Unfortunately, 25% of patients do not respond to drugs or neurosurgery. In this regard, TREMOR project proposes functional compensation of upper limb tremors with a soft wearable robot that applies biomechanical loads through functional electrical stimulation (FES) of muscles. This wearable robot is driven by a Brain Neural Computer Interface (BNCI). This paper presents a multimodal BCI to assess generation, transmission and execution of both volitional and tremorous movements based on electroencephalography (EEG), electromyography (EMG) and inertial sensors (IMUs). These signals are combined to obtain: 1) the intention to perform a voluntary movement from cortical activity (EEG), 2) tremor onset, and an estimation of tremor frequency from muscle activation (EMG), and 3) instantaneous tremor amplitude and frequency from kinematic measurements (IMUs). Integration of this information will provide control signals to drive the FES-based wearable robot.

Assessment by cytogenetic analysis of the radioprotection properties of propolis extract.

Propolis obtained from honeybee hives has been used in folk medicine as an anti-inflammatory, anti-carcinogenic or immunomodulatory agent. In animal studies, the radioprotector effect of propolis has been attributed to its free-radical scavenging properties. The present study was carried out to show the protective properties of propolis extract against DNA damage induced by gamma irradiation. The evaluation of the radioprotective effect of propolis has been carried out by the analysis of chromosome aberration induction after several doses of gamma rays. The results of an analysis in the presence of ethanol extract of propolis (EEP) were compared with the dose-effect calibration curve for gamma-rays by analysis of chromosome aberrations without propolis, a decrease in the radiation-induced chromosome aberrations has been observed to be higher than 50% for all the doses.

El componente bucal en el marco de los criterios y principios de abordaje integral que maneja el centro de desarrollo infantil Nº 1, distrito escolar Nº 6 / The oral component in the scope of the criteria and principles of a comprehensive approach managed by the Center of Childhood Developement Nº 1, School district Nº 6

El objetivo general de esta investigacion fue estudiar las características y el funcionamiento del Centro de Desarrollo Infantil Nº 1, de manera de observar si el componente bucal se encontraba presente en el Programa de Atención Integral que desarrolla el equipo de trabajo de dicho centro. Tiene como propósito fundamental construir unos lineamientos generales para una futura propuesta de salud bucal que se desarrollará acorde con las necesidades físicas, humanas y sociales, tanto de los niños que reciben atención como para el equipo que allí labora

Nuevas fuentes de lectinas para la diferenciación entre Trypanosoma cruzi y T. rangeli / Further sources of lectins for differentiation between Trypanosoma cruzi y T. rangeli

Os extratos de 176 espécies de sementes de plantas colombianas, correspondentes a 49 famílias e 147 gêneros foram testados para detectar a presença de aglutininas frente a hemácias humanas dos grupos A+, B+, O+ e de cachorro, cavalo e coelho. Os extratos que apresentaram alguma atividade hemaglutinante, foram usados para testar a aglutinaçao de Trypanosoma cruzi e T. rangeli. Além disso, a hemolinfa de 16 espécies nativas de invertebrados foram testadas nas mesmas condiçoes. Diluiçoes seriadas dos extratos foram usadas para as aglutinaçoes. Ambas epimastigotas de T. cruzi e T. rangeli foram aglutinadas com os extratos de sete sementes de plantas diferentes e com dois tipos de hemolinfa de invertebrados. As sementes de cinco plantas aglutinaram exclusivamente as epimastigotas de T. cruzi podendo assim ser usadas para a diferenciaçao entre as formas de cultura desses tripanossomos. A secreçao do pulmao do caramujo (Bulimus sp.) lisou completamente as epimastigotas de T. cruzi mas nao afetou as formas de T. rangeli. Nao foram encontrados extratos que aglutinaram ou lisaram exclusivamente as epimastigotas de T. rangeli.