Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
Buscar alternativas:
componer produced » compost produced (Expander búsqueda), computer products (Expander búsqueda)
para componer » para imponer (Expander búsqueda), para comprender (Expander búsqueda), para comprobar (Expander búsqueda)
componer produced » compost produced (Expander búsqueda), computer products (Expander búsqueda)
para componer » para imponer (Expander búsqueda), para comprender (Expander búsqueda), para comprobar (Expander búsqueda)
1
El objetivo de este trabajo de investigación fue en síntesis, desde un punto de vista psicológico, hay dos componentes principales que se encuentran en la demostración de hacer musicalmente. Desde una perspectiva, la creación melódica aplicada a la obra requiere un ciclo de absorción de los dialectos y estrategias de desarrollo melódico utilizadas desde siempre como un acercamiento para conseguir activos para la aparición del pensamiento, lo que permite al autor proyectar su singularidad. (subjetividad) desarrollar su propia capacidad innovadora y creatividad; así, poner el pensamiento objetivo en posesión de lo emocional. Las dos contemplaciones se insertan en la interacción innovadora en una especie de crítica que provoca la puesta en escena de una y otra desde una perspectiva bidireccional. Lo que no parece ser aplicable es la solicitud de iniciación, por lo que cualquie...
2
artículo
Components present in the frying oil used and determinants previous to its conversion into biodiesel
Publicado 2019
Enlace
Enlace
The residual oils represent a problem for the environment, because they contaminate the water producing an uptake of oxygen that prevents the subsistence of aquatic organisms. This investigation had the objective of determining the components present in the frying oil used from restaurants in the city of Guaranda, Bolívar - Ecuador prior to its conversion to Biodiesel. Samples were obtained from three fast food restaurants the most popular in the city in mention. Physicochemical analyzes were carried out with a filtration starting point, the analyzes performed on the oils were density, acidity, humidity or loss due to heating and refractive index, and their comparison with normative parameters. After the density analysis of the three sample types, an average between 0,918 and 0,920 gr / mL was obtained. In acidity, values between 3,006% and 3,293% were obtained. The humidity values ...
3
artículo
Components present in the frying oil used and determinants previous to its conversion into biodiesel
Publicado 2019
Enlace
Enlace
The residual oils represent a problem for the environment, because they contaminate the water producing an uptake of oxygen that prevents the subsistence of aquatic organisms. This investigation had the objective of determining the components present in the frying oil used from restaurants in the city of Guaranda, Bolívar - Ecuador prior to its conversion to Biodiesel. Samples were obtained from three fast food restaurants the most popular in the city in mention. Physicochemical analyzes were carried out with a filtration starting point, the analyzes performed on the oils were density, acidity, humidity or loss due to heating and refractive index, and their comparison with normative parameters. After the density analysis of the three sample types, an average between 0,918 and 0,920 gr / mL was obtained. In acidity, values between 3,006% and 3,293% were obtained. The humidity values ...
4
artículo
Publicado 2023
Enlace
Enlace
This article discusses the various meanings attributed to the concept of research methodology, based on an analysis of the study plans and programs of three doctoral programs in education in Mexico. These programs have well-established faculty and have produced several generations of trained students. The article outlines the methodology used to analyze the curricular discourse related to the concept of research methodology, and presents findings that highlight the different interpretations given to key elements of this concept across the three programs. The results reveal nine major attributions of meaning to the concept of research methodology, with varying degrees of similarity across the three programs. One shared conception is that research methodology is primarily a logic of knowledge generation, rather than a set of techniques. Additionally, all three programs acknowledge that res...
5
artículo
Publicado 2021
Enlace
Enlace
El proceso de generación hidroeléctrica se compone esencialmente de tres etapas que son la del embalse de agua, la de transformación de energía hidráulica a energía eléctrica y la de entrega de la energía eléctrica para su distribución. En la etapa del embalse se realizó la cuantificación de emisiones de gases de efecto invernadero usando la metodología propuesta por la Organización de las Naciones Unidas, denominada Panel Intergubernamental para el Cambio Climático del 2006 en diez centrales hidroeléctricas peruanas. Se concluyó que, en la primera fase de la generación hidroeléctrica, que es la del embalse, la contaminación significativa total de dióxido de carbono, CO2, llegó a ser 83947 toneladas por año y se contrastó los resultados comparando con datos obtenidos de embalses similares de hidroeléctricas brasileñas.
6
artículo
Publicado 2021
Enlace
Enlace
The main objective of the research was to characterize the innovation network and estimate an innovation adoption rate to evaluate its relationship with income generation in quinoa producers in Cabana. The characterization of the innovation network has been carried out using the social network analysis methodology (SNA), the innovation adoption index (IAI) has been obtained through an ordinal measurement scale and the return of the level of adoption of innovations on Producers' income has been estimated using the two-stage least squares methodology (TSLS) through the data obtained in a survey of 268 producers. The weak articulation of social capital has been evidenced in Cabana quinoa producers; however, the network of customers and input suppliers is well defined. Most of the producers stand out for their innovations in the productive component, the main weakness is related to the scarc...
7
artículo
Publicado 2021
Enlace
Enlace
The main objective of the research was to characterize the innovation network and estimate an innovation adoption rate to evaluate its relationship with income generation in quinoa producers in Cabana. The characterization of the innovation network has been carried out using the social network analysis methodology (SNA), the innovation adoption index (IAI) has been obtained through an ordinal measurement scale and the return of the level of adoption of innovations on Producers' income has been estimated using the two-stage least squares methodology (TSLS) through the data obtained in a survey of 268 producers. The weak articulation of social capital has been evidenced in Cabana quinoa producers; however, the network of customers and input suppliers is well defined. Most of the producers stand out for their innovations in the productive component, the main weakness is related to the scarc...
8
artículo
Publicado 2021
Enlace
Enlace
The main objective of the research was to characterize the innovation network and estimate an innovation adoption rate to evaluate its relationship with income generation in quinoa producers in Cabana. The characterization of the innovation network has been carried out using the social network analysis methodology (SNA), the innovation adoption index (IAI) has been obtained through an ordinal measurement scale and the return of the level of adoption of innovations on Producers' income has been estimated using the two-stage least squares methodology (TSLS) through the data obtained in a survey of 268 producers. The weak articulation of social capital has been evidenced in Cabana quinoa producers; however, the network of customers and input suppliers is well defined. Most of the producers stand out for their innovations in the productive component, the main weakness is related to the scarc...
9
artículo
Publicado 2021
Enlace
Enlace
The main objective of the research was to characterize the innovation network and estimate an innovation adoption rate to evaluate its relationship with income generation in quinoa producers in Cabana. The characterization of the innovation network has been carried out using the social network analysis methodology (SNA), the innovation adoption index (IAI) has been obtained through an ordinal measurement scale and the return of the level of adoption of innovations on Producers' income has been estimated using the two-stage least squares methodology (TSLS) through the data obtained in a survey of 268 producers. The weak articulation of social capital has been evidenced in Cabana quinoa producers; however, the network of customers and input suppliers is well defined. Most of the producers stand out for their innovations in the productive component, the main weakness is related to the scarc...
10
artículo
Publicado 2022
Enlace
Enlace
The aim of this study was to know the perception and knowledge of small producers about the behavior of the climate, its effect on milk production and the practices that allow adaptation to this behavior. The study was developed in Carmen de Carupa and Suesca (Cundinamarca, Colombia) with 40 producers who shared their knowledge through a semi-structured interview. The causes of climate change, events that affect milk production, changes in the climate in recent years and strategies that allow its adaptation were investigated. The humidity temperature index, precipitation, milk production and forage quality were determined. Frequency and principal component analysis were analysed through the Infostat® program. Producers considered deforestation as the main cause of climate change, perceived changes in climate and recognized droughts, frosts and high temperatures as events with the greate...
11
artículo
Publicado 2019
Enlace
Enlace
Research wants to propose quality control methodologies for the treatment of organic solid waste. It contains components rich in carbon and nitrogen that are important for the generation of a very good quality compost, this is achieved with a homogeneous mixture of these, in such a way to achieve an optimal C / N ratio in a range of 30 to 40 ( wet matter). Variants of 30 (CB), 35 (CR) and 40 (CA), low combination (CB), regular combination (CR) and High combination (CA) were proposed for the experiment to know the proportions of the treatment. The pH parameters that reach values above 8 were produced, producing precipitation of nutrients such as Potassium and Calcium, average maximum temperature at 30 °C in week 10 of the treatment; the moisture content reached up to 40 %, amount of organic matter on average 20 %, components in dry matter of Nitrogen was 1,5 % and Phosphorus a value grea...
12
artículo
Publicado 2019
Enlace
Enlace
Research wants to propose quality control methodologies for the treatment of organic solid waste. It contains components rich in carbon and nitrogen that are important for the generation of a very good quality compost, this is achieved with a homogeneous mixture of these, in such a way to achieve an optimal C / N ratio in a range of 30 to 40 ( wet matter). Variants of 30 (CB), 35 (CR) and 40 (CA), low combination (CB), regular combination (CR) and High combination (CA) were proposed for the experiment to know the proportions of the treatment. The pH parameters that reach values above 8 were produced, producing precipitation of nutrients such as Potassium and Calcium, average maximum temperature at 30 °C in week 10 of the treatment; the moisture content reached up to 40 %, amount of organic matter on average 20 %, components in dry matter of Nitrogen was 1,5 % and Phosphorus a value grea...
13
artículo
Publicado 2019
Enlace
Enlace
Research wants to propose quality control methodologies for the treatment of organic solid waste. It contains components rich in carbon and nitrogen that are important for the generation of a very good quality compost, this is achieved with a homogeneous mixture of these, in such a way to achieve an optimal C / N ratio in a range of 30 to 40 ( wet matter). Variants of 30 (CB), 35 (CR) and 40 (CA), low combination (CB), regular combination (CR) and High combination (CA) were proposed for the experiment to know the proportions of the treatment. The pH parameters that reach values above 8 were produced, producing precipitation of nutrients such as Potassium and Calcium, average maximum temperature at 30 °C in week 10 of the treatment; the moisture content reached up to 40 %, amount of organic matter on average 20 %, components in dry matter of Nitrogen was 1,5 % and Phosphorus a value grea...
14
artículo
Publicado 2024
Enlace
Enlace
Se evaluó el efecto de cuatro edades de cosecha (90, 120, 150 y 180 días) sobre el rendimiento de biomasa aérea y composición química de la colza, así como su uso como suplemento henificado para vacas lecheras en pastoreo a 3279 msnm. El rendimiento forrajero y la composición química se evalúo en 16 parcelas, 4 por tratamiento, de acuerdo con un diseño de bloques completos al azar. La biomasa de colza cosechada fue henificada y picada a 1 cm de longitud, suministrada diariamente a razón de 3 kg por vaca. Dieciséis vacas Holstein cruzadas y multíparas se distribuyeron en cuatro tratamientos que consistieron en henos elaborados de acuerdo con la edad de cosecha. La producción de leche por vaca se registró durante seis semanas. Los sólidos totales, grasa, proteína y lactosa se determinaron en la última semana del estudio. A medida que la edad de la colza fue mayor se incre...
15
artículo
Publicado 2021
Enlace
Enlace
The chemical and microbiological characteristics of cocoa shell silage (Theobroma cacao L) treated with natural yogurt as an inoculum source for use in animals of zootechnical interest were determined. A total of 25 plastic bags of 1 kg capacity were used, and they were evaluated on days 1, 4, 8, 15 and 30 of fermentation. The chemical indicators were pH, dry matter (DM), crude protein (CP), crude fibre (CF), ash, ethereal extract (EE), nitrogen-free extracts (NFE) and crude energy (CE); and the microbiological indicators were the presence or absence of Escherichia coli, Clostridium spp and Salmonella spp. The silage presented an ideal pH and a good content of DM, CP, ash, NFE, CE and a low level of EE. The microbiological analyses were negative for the microorganisms under evaluation. The combination of ground cocoa shell, mineral salt, molasses, calcium carbonate and natural yogurt pro...
16
artículo
Publicado 2019
Enlace
Enlace
En el presente trabajo se ha presentado un análisis de transistores de efecto de campo usando fuentes de voltaje pulsadas. Se han realizado medidas de microondas en dispositivos de tecnología HEMT’s y LDMOS poniendo en evidencia la diferencia entre el comportamiento estático y dinámico de dichos dispositivos. En base a las medidas se ha realizado un procesamiento de datos derivando una nueva ecuación con la capacidad de reproducir ambos tipos de comportamiento con elevada precisión y en diferentes puntos de operación. Consecuentemente el trabajo aporta un nuevo modelo basado en un circuito no lineal de cuatro terminales. La relevancia de este modelo es la capacidad de predecir los efectos físicos como la dispersión frecuencial y la movilidad electrónica del dispositivo semiconductor. Esto es importante pues la dispersión frecuencial es uno de los problemas más importantes d...
17
artículo
Publicado 2021
Enlace
Enlace
Archaeometry is applied to analyze archaeological ceramics in the Peruvian Amazon. This scientific method allows us to identify its chemical and mineralogical components, just as the raw materials used to produce ceramics. At the same time, it gives us directions about the geographical location of the quarries. The archaeometric analysis let us verify that tempers or organic origin degreasers, as ‘apacharana’ or ‘cauchi’ water sponge, used by Amazonian natives, could have a high mineralogical percentage of aluminosilicates. This research corroborates several hypotheses about mineralogical components in the ceramic making process and other social aspects about chronology and dynamics of interaction processes between prehistoric Amazonian societies.
18
artículo
Publicado 2020
Enlace
Enlace
The chemical characteristics of a silage of banana (Musa paradisiaca) and baby banana (Musa acuminata AA) rachis treated with whey and urea were evaluated. In total, 24 microsilos of 1 kg capacity were prepared and the pH, dry matter (DM), crude protein (CP), crude fiber (CF), ashes, ether extract (EE), nitrogen-free extracts (NFE) and gross energy (GE) were determined at 0, 1, 4, 8, 15 and 30 days of conservation (four microsilos for each day). The silage material presented an adequate pH and produced significant increases in the content of DM, CP, ash, EE, NFE and GE and a reduction in the content of CF, with respect to the rachis in its natural state. There was an absence of Escherichia coli, Clostridium spp and Salmonella spp. Mild and strong acid odor, light and dark brown color and solid and semi-solid consistency were evident. The use of drying material, molasses, urea and whey al...
19
artículo
Publicado 2020
Enlace
Enlace
Se evaluaron las características químicas de un ensilado de raquis de plátano (Musa paradisiaca) y banano orito (Musa acuminata AA) tratado con suero de leche. Se prepararon 24 microsilos de 1 kg de capacidad y se determinó el pH, materia seca (MS), proteína bruta (PB), fibra bruta (FB), cenizas, extracto etéreo (EE), extractos libres de nitrógeno (ELN) y energía bruta (EB) a los 0, 1, 4, 8, 15 y 30 días de conservación (cuatro microsilos por cada día). El material ensilado presentó un adecuado pH y produjo incrementos significativos en el contenido de MS, PB, cenizas, EE, ELN, EB y una reducción en el contenido de FB, respecto al raquis en estado natural. Hubo ausencia de Escherichia coli, Clostridium spp y Salmonella spp. Se evidenció olor ácido suave y fuerte, color marrón claro y oscuro y consistencia sólida y semisólida. El uso de material secante, melaza, urea y s...
20
artículo
Publicado 2022
Enlace
Enlace
The main objective of the research was to obtain metohuayo oil by hydraulic pressing versus screw pressing (at 50, 70 and 90 °C). The variables evaluated on the extracted oil were: extraction yield and physical-chemical. The seed stood out for its high fat content (40.5 %) and color L* (29.3), a* (9.7) and b* (18.4). Screw pressing at 50 °C presented the maximum yield and oil recovery values: 39.2% and 96.9%, respectively. The same trend was observed for the quality parameters analyzed: acidity index, peroxide index, p-anisidine index and coefficients K232 and K268, where their values showed an increase related with temperature levels of the screw pressing. The results showed that the set of physical-chemical characteristics allow the recognition and differentiation of the oils obtained in relation to temperature levels, and through a Principal Component Analysis (PCA) it was possible ...
