The Applicability of the Eclectic Method on the Development of the Oral Production

Developing our students\u27 English oral expression in Public Institutions is a process that needs to be carefully analyzed by teachers. It is more than selected a method, it is more than following step by step what a theory says. It is going beyond our students\u27 needs. It is a deeply study of what a student really can do and needs to learn. Based on a post-method pedagogy which provides teachers the ability to break down barriers to the imposition of a specific method and make the teaching process more effective, this paper proposes the application of the eclectic method for the development of the oral expression of public high school students encouraging teachers to see the teaching process from a different and modern perspective. By analyzing the principles and features of this method, this paper describes the research made on a Public Institution with students in third year. With the goal of improving each one of the principal components of the English oral expression: range, accuracy, fluency, pronunciation and coherence, there were used selected methods, techniques and strategies based upon the students\u27 learning styles and needs. The observation and Interview techniques were used on data collection and the parameters of Inferential and descriptive statistic were applied in order to analyze the results achieved. They showed that even though not all of the group of the students could achieve the B1 level in reference to the Common European Framework and required by the Ministry of Education, a large number of them were able to increase their English oral expression. According to this data, this paper concludes that the selection of objectives, the modern teacher‘s and student\u27s role, the use of different but selected methods, the linguistic input activation and the contextualization had a significant impact on learners´ learning

Caracterización y propuesta técnica de la acuicultura en el sector de jama, provincia de Manabí

El cantón Jama, ubicado en la provincia de Manabí, ha sido por décadas un centro de operaciones para la producción acuícola, siendo esta actividad la que caracteriza a esta zona del país. En Jama al igual que muchas otras zonas acuícolas en el país, el Penaeus vannamei es la especie mayormente cultivada. Este sufrió los embates del virus de la Mancha Blanca durante los primeros años del siglo, pero la zona se ha recuperado. Sin embargo hay mucho que se puede mejorar para optimizar los procesos de producción, por lo cual se hace la propuesta técnica definida a fin de optimizar la rentabilidad de los productores mediante inversiones en sus infraestructuras y en sus protocolos de cultivos

Understanding olfactory fertility cues in humans: chemical analysis of women's vulvar odour and perceptual detection of these cues by men

By conveying cues of their current fertility, females can provide valuable reproductive information to conspecifics. Our closest relatives, non-human primates, employ diverse strategies, including olfactory cues from the anogenital region, to communicate information about female fertility. While their shared phylogeny with humans suggests that analogous olfactory cues may have been preserved in modern women, empirical evidence is lacking. In a comprehensive two-fold approach, we investigated fertility-related shifts in the chemical composition of women's vulvar volatiles as well as men's ability to perceive them. We collected vulvar odour from 28 naturally cycling women (students, academic staff members, and citizen of Göttingen) on up to ten days of their menstrual cycle, focusing on fertile days. For 146 vulvar samples (subsample of n = 16 women), we assessed whether their volatile profiles varied in relation to female fertility using gas chromatography–mass spectrometry. Simulating a first encounter, 139 men evaluated a total of 274 vulvar odour samples from 28 women, collected on different cycle days. We used hormonal analyses to confirm women's fertile days. We assessed variation in chemical composition and male odour ratings in relation to women's conception probability, temporal distance to ovulation, and ovarian hormone levels. We found no evidence for chemical changes allowing tracking of fertility across the cycle. However, in the immediate assessment (i.e., without tracking), no significant effects were found for any predictors except conception risk. Notably, the significance of the conception risk effect varied depending on the model specification. Further, men's attraction to vulvar odour was not significantly predicted by female fertility. Overall, our data suggests a relatively low retention of chemical fertility cues in vulvar odour of modern women

Análisis del desempeño financiero de la economía circular en empresas del sector de transporte a nivel nacional a través de la gestión ambiental

El uso del transporte afecta al planeta debido a la emisión de gases de efecto invernadero, siendo una causa que tiene enorme impacto a la naturaleza y en la salud y rendimiento de los trabajadores, por lo que se busca la manera de reducir el dióxido de carbono que emiten estas empresas. Viendo a través de la economía circular una herramienta para disminuir la contaminación causada al medio ambiente, donde se puede gestionar los desperdicios y convertir a los recursos para beneficio de las empresas, generando un menor impacto ambiental. El objetivo de este estudio es identificar los beneficios económicos de implementar los sistemas de gestión ambiental en los procesos de las empresas del sector de transporte del Ecuador. Con este fin, la pregunta de investigación es: ¿Cuáles son los beneficios de tener un sistema de gestión ambiental en las empresas del sector de transporte? De manera que esta se responde mediante un estudio basado en estadísticas y métodos de investigación no experimental, buscando la relación entre las variables de desempeño financiero y la economía circular. De forma que los resultados obtenidos reflejan que esta relación es significativa, indicando que cuanto más se invierte es mejor la ganancia para las empresas, donde se pudo analizar las utilidades que se obtendrá a futuro siempre y cuando se cuide al medio ambiente. Teniendo esto en cuenta, se recomienda trabajar con indicadores de desempeño financiero con el fin de obtener un mejor análisis a través de las variables medioambientales, para futuros análisis con bases más estructuradas

Interlaboratory exercise for the analysis of carotenoids and related compounds in dried mango fruit (Mangifera indica L.)

An interlaboratory comparison was done for the analysis of carotenoids in freeze-dried mango. The study was performed from July to September 2018. Mango fruit was freeze-dried, homogenized, and packaged under vacuum conditions in portions of 6 g (test sample). Two test samples were sent to the participating laboratories for analysis. Laboratory results were rated using Z-scores in accordance with ISO 13528 and ISO 17043. The standard deviation for proficiency assessment (also called target standard deviation) was determined using a modified Horwitz function and varied between 10% and 25%, depending on the analyte. Out of 14 laboratories from 10 different countries, 9 laboratories (64%) obtained a satisfactory performance (Z ≤ 2) for the analysis of β-carotene. While for 7 laboratories that analyzed α-carotene, (9Z)-β-carotene, β-cryptoxanthin, and zeaxanthin, 4 laboratories (57%) obtained a satisfactory performance. However, only 2 laboratories out of 7 (29%) obtained a satisfactory performance for lutein. Based on the comparability of the analytical results, this study concludes that freeze-dried mango pulp can be used as a reference material for the analysis of α and β-carotene, (9Z)-β-carotene, β-cryptoxanthin, and zeaxanthin by applying different analytical procedures for their extraction and quantification

U.S. cereal rye winter cover crop growth database

Winter cover crop performance metrics (i.e., vegetative biomass quantity and quality) affect ecosystem services provisions, but they vary widely due to differences in agronomic practices, soil properties, and climate. Cereal rye (Secale cereale) is the most common winter cover crop in the United States due to its winter hardiness, low seed cost, and high biomass production. We compiled data on cereal rye winter cover crop performance metrics, agronomic practices, and soil properties across the eastern half of the United States. The dataset includes a total of 5,695 cereal rye biomass observations across 208 site-years between 2001–2022 and encompasses a wide range of agronomic, soils, and climate conditions. Cereal rye biomass values had a mean of 3,428 kg ha−1, a median of 2,458 kg ha−1, and a standard deviation of 3,163 kg ha−1. The data can be used for empirical analyses, to calibrate, validate, and evaluate process-based models, and to develop decision support tools for management and policy decisions

Interlaboratory exercise for the analysis of carotenoids and related compounds in dried mango fruit (Mangifera indica L.)

An interlaboratory comparison was done for the analysis of carotenoids in freeze-dried mango. The study was performed from July to September 2018. Mango fruit was freeze-dried, homogenized, and packaged under vacuum conditions in portions of 6 g (test sample). Two test samples were sent to the participating laboratories for analysis. Laboratory results were rated using Z-scores in accordance with ISO 13528 and ISO 17043. The standard deviation for proficiency assessment (also called target standard deviation) was determined using a modified Horwitz function and varied between 10% and 25%, depending on the analyte. Out of 14 laboratories from 10 different countries, 9 laboratories (64%) obtained a satisfactory performance (Z ≤ 2) for the analysis of β-carotene. While for 7 laboratories that analyzed α-carotene, (9Z)-β-carotene, β-cryptoxanthin, and zeaxanthin, 4 laboratories (57%) obtained a satisfactory performance. However, only 2 laboratories out of 7 (29%) obtained a satisfactory performance for lutein. Based on the comparability of the analytical results, this study concludes that freeze-dried mango pulp can be used as a reference material for the analysis of α and β-carotene, (9Z)-β-carotene, β-cryptoxanthin, and zeaxanthin by applying different analytical procedures for their extraction and quantification.This work was performed within the frame of the TEAM EC2017TEA442A103 VLIR-UOS project “Improving Ecuadorian child nutrition by using mango by-products as potential sources of bioactive compounds”. JV-Ch wants to acknowledge the quality technical support of Samara Fernández de Souza from VITO. VM-P acknowledges Mayra Anaguano from EPN. AZM acknowledges Fabiane C. Petry for the carotenoid analysis, FAPESP (grant 2018/23752-1) and CNPq (grant 309182/2018-2).Peer reviewe

Uso de Bacillus subtilis y Rhodotorula sp. como promotores de crecimiento en alevines de tilapia gris (Oreochromis niloticus)

16 p.La implementación de promotores de crecimiento está teniendo auge en investigaciones como probióticos en animales. El objetivo del estudio fue evaluar el efecto de dos promotores de crecimiento sobre los parámetros de sobrevivencia, biomasa, peso por alevín, ganancia diaria de peso e índice de conversión alimenticia. La investigación se llevó acabo en Zamorano, Honduras y duró 30 días en los que se administraron los promotores de crecimiento mezclados con el concentrado de 45% de proteína cruda. Se obtuvo, en la mezcla de concentrado con Rhodotorula sp. 1.85 × 108 UFC/g y con B. subtilis 2.25 × 108 UFC/g de alimento respectivamente. Se utilizó una densidad de 700 alevines por tanque. El análisis se hizo con un diseño completo al azar con medidas repetidas en el tiempo. Los tratamientos fueron: tratamiento uno, control, el cual consistió únicamente del alimento convencional si ningún tipo de aditivo, dos, Alimento + Rhodotorula sp. y tres, Alimento + B. subtilis. Cada tratamiento contó con tres repeticiones. Los parámetros de calidad de agua fueron excelentes. El tratamiento de control mostro los mejores resultados, siendo superior en cada parámetro evaluado en comparación con los tratamientos dos y tres. A excepción del índice de conversión alimenticia donde el promedio acumulado muestra que el tratamiento de control no tuvo diferencia significativa comparado con el tratamiento de Alimento + Rhodotorula sp. Bajo las condiciones del estudio, al incluir la levadura Rhodotorula sp. o la bacteria B. subtilis se reducen los parámetros productivos de los alevines comparado con la dieta convencional