La presente investigación “Análisis de la producción de una torre grúa y selección del modelo óptimo para optimizar tiempos y costos en una edificación multifamiliar”, tiene como finalidad analizar la producción de una torre grúa en el periodo de casco estructural para seleccionar el modelo óptimo en edificio multifamiliar Greenery. Se necesitó realizar un análisis de las actividades involucradas en la producción y conocer los factores para seleccionar el modelo óptimo de torre grúa que se utilizó en la obra, aplicando como herramienta el Lean Construction para analizar la producción en cada caso. Se comprobó que la torre grúa tiene una diferencia de S/. 25.359.00 nuevos soles con respecto al vaciado con bomba de concreto, debido a que el alquiler de la torre grúa es de mayor costo, sin embargo, resulta más útil ya que también se utilizó para el transporte de ...

The objective of this research is to determine the variation of the total ozone column over the regions of Huancayo, Santiago de Chile and Antarctica. The study focused on measurements of the total ozone column over Huancayo, Santiago de Chile and the Machupicchu Antarctic Research Station (ECAMP). Total column ozone data were obtained by NASA's Ozone Monitoring Instrument (OMI) over 16 years (2005-2020). Likewise, it was obtained that in Huancayo a monthly average of 243.1 Dobson Units (DU). In the Peruvian Antarctic station there is a monthly average of 276 DU. And, finally, the registered data obtained the minimum and maximum value of 237 (May) and 254 (September) respectively. Likewise, in Santiago de Chile the minimum and maximum value of 251 (March) and 301 (September) respectively were obtained. In Antarctica, the minimum and maximum value of 220 (September) and 310 (December) res...

Atmospheric particles (PM10 and PM2.5) are responsible for serious problems in human health. Therefore, this study determined the spatial variation of the concentration of particulate matter in the department of Junin, as in the Brazilian Amazon for the period 2021. The data obtained were analyzed using the low-cost PA-II Purpleair sensor, to measurements of particulate matter (PM1, PM2.5 and PM10) at a temporal resolution of 1 min. Likewise, maximum average values of concentrations of particulate material less than 1um, 2.5um and 10um were obtained, which can reach values of 40, 49, 55 μg/m3, respectively. It is concluded that the high values slightly exceed the environmental quality standards of Peru.