Rosa Haydeé Zárate Quiñones

El objetivo de la investigación fue determinar los niveles de riesgo ergonómicos de docentes y administrativos de la Facultad de Ciencias Forestales y del Ambiente de la UNCP. Métodos: se aplicó la prueba de normalidad Shapiro Wilk y Prueba de t de muestras independientes y de Levene. Se utilizó el método REBA (Rapid Entire Body Assessment) y la aplicación del Software ERGONIZA utilizando fotografías. Se colecto la información a fin de inspeccionar las actividades laborales y determinar los niveles de riesgo ergonómicos , Resultados: Las medias de la validación subjetiva de los 2 cuestionarios superaron el 80 % (calidad buena a Muy buena) y en la confiabilidad el análisis alfa de Cronbach fue aceptable en el rango de la escala α = 0.70 a 0.95, incluyendo ítems de riesgo ergonómico, satisfacción laboral y salud ocupacional, se concluye que 50% de los administrativos presentan el nivel de riesgo ergonómico Medio (2) y el otro 50% presentan un nivel de riesgo ergonómico Alto (3), siendo necesaria cuanto antes la actuación, mientras que el 42.9% de los docentes presentan nivel de riesgo ergonómico Alto (3) y el 57.1% un nivel de riesgo ergonómico Muy Alto (4), siendo la actuación necesaria de inmediato. Los docentes de la facultad tienen mayor satisfacción laboral 60.6% en relación al personal administrativo con un 16.7%. En salud ocupacional de docentes y administrativos de la FCFA de la UNCP tienen un porcentaje medio en problemas de salud.

Wastewater treatment through phytoremediation with plants reduces contaminants to acceptable levels as established by the Environmental Quality Standards (EQS) of Peru. This study evaluated the efficiency of Azolla filiculoides Lam. plants from the Huayllaspanca Colored Wetland (Laguna Coloreado) in the phytoremediation of wastewater from Huamancaca Chico, Chupaca Province, Junín Region, Peru. A pre-test and post-test experimental design was used. Glass aquariums of dimensions 54 × 20 × 21.3 cm were set up, and 28 g of phytoremediation plant samples were planted in 20 L of wastewater over a 28-day period. The main results for contaminant removal efficiency were as follows: clear and odorless water, total dissolved solids (40.27%), electrical conductivity (41.07%), turbidity 98.51%, oils and greases (>90.7%), BOD₅ (95.55%), COD (95.04%), and ammonia nitrogen (95.77%). The final removal of fecal coliforms and Escherichia coli from wastewater using A. filiculoides was 99.9%, with post-treatment averages (11.6 MPN/100 mL and 2 MPN/100 mL, respectively) significantly lower than their respective Environmental Quality Standards (EQS) (1000 MPN/100 mL) (p < 0.05). In conclusion, Azolla filiculoides Lam. is an effective macrophyte for improving the physical, chemical, and microbiological parameters of wastewater and removes contaminants.

This study aimed to determine the optimal oxidation-reduction potential (ORP) and ozonation time to effectively eliminate Escherichia coli and Total coliform from drinking water. An automated ORP control system was implemented, incorporating a Siemens S7-1500 PLC with HMI interface, ORP and pH...

The increasing scarcity of water resources has driven the need for innovative solutions for wastewater reclamation using different nanomaterials. The purpose of the research was to establish the progress of wastewater remediation using functionalized metallic and semiconductor nanomaterials. A...

Water quality is essential for a healthy life, so it is necessary to look for technologies to measure its parameters in real time and automatically. The purpose of this study was to implement and determine the reliability of an automated system to evaluate the Organoleptic Water Quality intended...

The treatment of municipal solid waste (MSW) in Peru and some parts of the world is still incipient, mainly due to the lack of technologies implemented to recover this waste; another important cause in Peru is the lack of studies for the treatment of the organic fraction of municipal solid waste (OFMSW). The objectives of this work were: (i) to determine the generation of OFMSW, (ii) to produce quality compost and (iii) to estimate the application rate for the recovery of degraded surfaces. Tools and instruments acquired from the Institute of Sanitary Engineering of FIUBA and the Ministry of the Environment were used to measure physicochemical parameters and environmental estimates. The results showed a per capita MSW generation of 0.472 kg/inhab/day, of which 42.87% was composed of OFMSW or organic fraction of MSW; a feasible availability of organic matter for composting of 6783.79 t/year was determined. The composting experiment was carried out with waste segregated at the MSW treatment plant, installing composting piles with-structurants (WE) consisting of shavings, sawdust and garden waste, and no-structurants (NS). Despite the unfavorable climatic conditions of the region, the maturity and physicochemical properties of the compost were similar to MSW composts recorded elsewhere, with few differences between NS and WE. The main limitation of compost quality was the concentration of heavy metals Cd, Pb and Zn, which were close to or above the limits established in several regulations, which can be significantly reduced by segregating the OFMSW at source. Annual limits and cumulative load limits were used for 10-year applications, the calculated precautionary doses were 25 t/ha/year and 85 t/ha for 10 years in dry weight; correcting for moisture content, the precautionary dose was 40 t/ha/year in wet weight. Depending on the organic fraction of MSW available, compost production and the precautionary dose, 60 to 80 ha/year of degraded agricultural areas and forest plantation nurseries could be recovered with compost; using lower doses it is possible to cover a larger area. From the results, the work provides valuable information to elaborate an integrated MSW management plan, closing the cycle of production, treatment and beneficial use.

This work presents results of Aerosol Optical Depth (AOD) and Direct Radiative Force (DRF) at the top of the atmosphere (TOA), obtained during monitoring campaigns carried out at the Huancayo Observatory of the Geophysical Institute of Peru (OH-IGP ) in April and August 2022. In these campaigns, a Sun CIMEL photometer was used to measure the microphysical and optical properties of aerosols at wavelengths ranging from 340 to 1020 nm, and a low-cost Purple-air sensor to quantify the concentration of material particulate (PM), in fine and coarse modes. The AOD results indicated values in the range 0.06-0.22. The daily averages of PM2.5 and PM10 did not exceed Peru's current Environmental Quality Standards (50 μg/m3 and 100 μg/m3). The air quality index (AQI) calculated for PM2.5 and PM10 was classified as good. On some days during the campaigns, the air quality was classified as moderate. These results contribute to a better understanding of the current climatic conditions of the Peruvian Altiplano.

The work consisted in analyzing the influence of an electronic positioning mechanism of an Au metal plate in the XY axes; to optimize the production of Au metal nanoparticles by laser ablation in sterile water samples as well as to obtain morphology and size required for environmental...

The research sought to evaluate the normalized difference vegetation index (NDVI) of the study area located in the province of Tayacaja, which includes the districts of Acraquia, Ahuaycha, Pampas and Daniel Hernández, which is part of the central Andes of Peru. The data were collected in low...

The Phthorimaea operculella Zeller moth is a pest that affects potato crops and is found mainly in the inter-Andean valleys of the highlands of Peru (Huancavelica). The objective of the research was to use the phenomenon of light generated by light-emitting diodes (LEDs) to attract the potato...