We present a new process for the extraction of carminic acid (ACAR) from cochineal using mass- separating agent R300 (MSA R300) and an organic solvent with affinity only with the ACAR.

We present a new process for the extraction of carminic acid (ACAR) from cochineal using mass- separating agent R300 (MSA R300) and an organic solvent with affinity only with the ACAR.

This work is aimed at developing a design of a wastewater treatment plant to treat wastewater released from the Campus of the University of San Marcos in Lima - Perú. An anaerobic treatment of sewage has been designad to treat a load of 1.00 L/s of wastewater, containing a DBO5 of 220 mg/L. The required biorreactor has a capacity of 10.8 m3 , wich will operate at high yield compared to the standard processes of treatment. lt has been demonstrated that this process is economically and technically feasible, and the total cost of implementing, this project has been calculated in US$ 45 000, using locally available corrosion resistant material.

This work has the goal of designing a system to treat solid municipal wastes by recycling and final disposition in a sanitary filling field. Studies of handling solid wastes in the northem part of Lima, determine a rate of treatment of 800 TM/day. The filling field will be located near the Pan American high way, around the 38,700 Km in the district of Puente Piedra, taking around 100 hectares of field. Studies on climatological, geophysical, geodinamic and social impacts, determine that the environmental impact on the ecosystem will be minimal. Finally, the useful lile of the facility is estimated in 45 year at a total final deposition cost of US$2,60 /TM.

It has been developed a process of integration of fermentation systems of organical solid waste (OSW) in facilities of the «La Vizcacha» filling field, Puente Piedra District-Lima. We are obtained 225 mL ethanol and 0,008 5 kWh per kilogramm of urban solid waste.

En este trabajo se propone un proceso para el tratamiento de los residuos sólidos urbanos (RSU) generados en el cono norte de Lima. La planta se instalará en el distrito de Puente Piedra, región de Lima. La capacidad de tratamiento es de 1500 TM/dia y se produce etanol, metano y diesel 2 como productos de valor agregado, asimismo se logra una reducción superior al 80% en volumen de RSU destinados actualmente a la disposición final en los rellenos sanitarios de Zapallal y La Vizcacha. El impacto de la implementación de este proceso será positivo tanto en los aspectos tecnológico, económico y ambiental.

Este estudio se llevó a cabo en el contexto del Objetivo de Desarrollo Sostenible 8 de las Naciones Unidas, que busca promover el crecimiento económico sostenible, la inclusión y el empleo digno para todos. El objetivo principal fue determinar la relación entre la gestión de capacitación y las competencias laborales. La investigación adoptó un enfoque cuantitativo, con un diseño no experimental, transversal y correlacional. La muestra incluyó a 100 trabajadores, y la recolección de datos se realizó mediante encuestas, utilizando dos cuestionarios con un coeficiente de validez de 1.00 y coeficientes de confiabilidad de 0.968 y 0.986, respectivamente. Los resultados mostraron que el 56% de los participantes evaluó el nivel de gestión de capacitación como medio, mientras que el 85% calificó las competencias laborales como logradas. Además, se encontró una relación signifi...

This work is aimed at developing a design of a wastewater treatment plant to treat wastewater released from the Campus of the University of San Marcos in Lima - Perú. An anaerobic treatment of sewage has been designad to treat a load of 1.00 L/s of wastewater, containing a DBO5 of 220 mg/L. The required biorreactor has a capacity of 10.8 m3 , wich will operate at high yield compared to the standard processes of treatment. lt has been demonstrated that this process is economically and technically feasible, and the total cost of implementing, this project has been calculated in US$ 45 000, using locally available corrosion resistant material.

This work has the goal of designing a system to treat solid municipal wastes by recycling and final disposition in a sanitary filling field. Studies of handling solid wastes in the northem part of Lima, determine a rate of treatment of 800 TM/day. The filling field will be located near the Pan American high way, around the 38,700 Km in the district of Puente Piedra, taking around 100 hectares of field. Studies on climatological, geophysical, geodinamic and social impacts, determine that the environmental impact on the ecosystem will be minimal. Finally, the useful lile of the facility is estimated in 45 year at a total final deposition cost of US$2,60 /TM.

It has been developed a process of integration of fermentation systems of organical solid waste (OSW) in facilities of the «La Vizcacha» filling field, Puente Piedra District-Lima. We are obtained 225 mL ethanol and 0,008 5 kWh per kilogramm of urban solid waste.

In this work we present the design of a Process for the treatment of the urban salid wastes (USW) produced in the northern part of Lima. The plant will be installed in the district of Puente Piedra, region of Lima. The treatment capacily is of 1500 TM/day and ethanol, methane and diesel 2 has been produced of added value, also a higher reduction is achieved to 80% in volume of USW destination at present to the final disposition in the sanitarias fillings fields of Zapallal and The Vizcacha. The impact of the implementation ol this process will be positive so much in the technological, economic and environmental aspects.

In the industry every time more is generalized the manufacture of varied products of simultaneous way with similar values, denominated joint products from the same raw material and/or process of manufacture, giving rise to the joint cost. Then the Engineer of Processes faces the necessity to calculate the costs of these individual products, task that often is a cornplex subject since the joint costs are not specifically identifiable with some of the products that are making in simultaneous form. The intention of this eighth part is to provide the excellent models, methodology and criteria of how it must assign the joint costs to each joint product.

This work aims to simulate a bioreactor to produce ethanol from glucose using immobilized cells . First, we have proceeded to statistically evaluate the proposed kinetic models , from which we selected the model Aiba , Shoda and Nagathani [18 ] as the most appropriate model . Second, the values ​​of the simulated fermentation have been validated by comparing the results with experimental data and Mutharasan Gencer [17 ] . Finally , the yield of ethanol production was simulated by considering a bioreactor of PFR type . The solution of the equations of material balance was done using Runge Kutta algorithm in Mathcad 7P IV . Comparison of simulated and experimental Mutharasan Gencer sample values ​​appropriate arrangement .

The objective of this research was to evaluate the compressive strength of the 350 kg / cm2 design concrete manufactured in the city of Huancayo, using coarse and fine aggregates with recycled extruded polystyrene (XPS) materials, washed and unwashed, duly scratched unwashed expanded polystyrene (EPS) in pearl shape. Samples of polystyrene waste were taken in recreational and public service facilities and aggregates from quarries near the city of Huancayo that were subjected to quality control tests according to the Peruvian technical standard NTP 400.037. Different mixtures consisting of recycled polystyrenes and aggregates were made for the manufacture of concrete, the compressive strength was analyzed in a specialized laboratory. The results showed that the concrete mix made with recycled and washed XPS, whose proportion was 30% coarse aggregate per XPS and 20% fine aggregate per XPS,...

In the industry every time more is generalized the manufacture of varied products of simultaneous way with similar values, denominated joint products from the same raw material and/or process of manufacture, giving rise to the joint cost. Then the Engineer of Processes faces the necessity to calculate the costs of these individual products, task that often is a cornplex subject since the joint costs are not specifically identifiable with some of the products that are making in simultaneous form. The intention of this eighth part is to provide the excellent models, methodology and criteria of how it must assign the joint costs to each joint product.

This work aims to simulate a bioreactor to produce ethanol from glucose using immobilized cells . First, we have proceeded to statistically evaluate the proposed kinetic models , from which we selected the model Aiba , Shoda and Nagathani [18 ] as the most appropriate model . Second, the values ​​of the simulated fermentation have been validated by comparing the results with experimental data and Mutharasan Gencer [17 ] . Finally , the yield of ethanol production was simulated by considering a bioreactor of PFR type . The solution of the equations of material balance was done using Runge Kutta algorithm in Mathcad 7P IV . Comparison of simulated and experimental Mutharasan Gencer sample values ​​appropriate arrangement .

El objetivo central del trabajo de investigación fue proponer un programa basado en el método Pólya para facilitar la resolución de problemas matemáticos de estructura multiplicativa en los estudiantes del 6to grado de primaria de la Institución Educativa N° 2091 “Mariscal Andrés Avelino Cáceres – Los Olivos – 2013. Este programa permite mejorar la capacidad resolutiva de problemas matemáticos en los estudiantes. Para esta propuesta se hizo una investigación de tipo cuantitativo, aplicado a un diseño cuasi experimental de pretest y postest. Se realizó la prueba diagnóstica a 10 estudiantes por sección de las cinco aulas del 6to grado de primaria. Con los resultados obtenidos, se eligió a dos aulas homogéneas, con un total de 28 estudiantes en el grupo control y 29 en el grupo experimental. Después de aplicar el pretest, se inicia con la propuesta didáctica de 12 ...

The inadequate final disposal of hazardous industrial waste, such as bentonite used in the refining processes of contaminated automotive lubricants, generates a series of negative environmental impacts on water, air and soil resources. To contribute to the minimization of these impacts, the purpose of the present investigation was to evaluate the biodegradation capacity of a sample of automotive lubricating oil trapped in bentonite clay, using the bacterial consortium Oil Eating Microbes (Rodhococus pyridinivorans, Pseudomonas montielli and Bacillus sp.). To obtain the maximum performance of the biodegradation of the oil (reduction of total hydrocarbons of oil in the clay), by the bacterial consortium, two experimental tests were carried out, in a five liter capacity bioreactor, where the concentration of biodegradation of total petroleum hydrocarbons was measured, the first was performe...

La investigación tuvo como objetivo evaluar el efecto de la suplementación de probióticos naturales y comerciales sobre el rendimiento productivo de cuyes en crecimiento. Se emplearon 48 cuyes machos destetados, raza Perú. Se determinaron la ganancia de peso, consumo de materia seca, conversión alimenticia y rendimiento de carcasa. Se utilizó un diseño completo al azar con cuatro tratamientos, seis repeticiones por tratamiento y dos animales por repetición. Los tratamientos fueron T1: Dieta control (DC); T2: DC + Probiótico Natural (PN) (2 ml); T3: DC + Probiótico Comercial (PC) (2 ml) y T4: DC + PN (1 ml) + PC (1 ml). El PN contenía: Bacillus pumilus, Lactobacillus frumenti, Streptococcus thoraltensis, Lactobacillus johnsoni y el PC: Lactobacilus rihamnosus y Enterococos faecium. No se encontraron diferencias significativas (p > 0,05) en los parámetros evaluados; sin embargo...

The waters of rivers, seas and lagoons contaminated by various sources, whether of natural or anthropogenic origin, contain polluting substances, among them they present a high bacterial load, which does not allow human consumption because it causes damage to human health. Therefore, the research carried out presents the study of the photocatalytic effect of zinc oxide nanoparticles (ZnONPS) as its mechanism of biochemical interaction with the consequent formation of reactive oxygen substances (ROS) and thus propose the interpretation of its subsequent Bactericidal effect by generating cellular damage in Staphylococcus aureus bacteria. According to the results obtained in an experimental pilot work, the decrease in colony formation evaluated through the plate culture method was reported, and it was determined that the concentration of 10- 4 g of ZnONPs/ mL of ZnO nanoparticles (synthesiz...