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La ley de Kohlrausch para el cálculo de la conductividad equivalente para electrólitos fuertes se cumple a concentraciones sumamente diluidas (c = 0), bajo estas condiciones los efectos de las interacciones moleculares se hacen despreciables y el modelo puede explicar los valores experimentales. A medida que la concentración aumenta los datos experimentales se alejan de la linealidad que la ley propone. Para explicar estas desviaciones como consecuencia del aumento de las interacciones moleculares, Theodore Shedlovsky propuso una modificación de la ley de Kohlrausch. Se ha determinado las constantes de este modelo en un ambiente Solver de Microsoft Excel para 12 electrólitos, de modo que; haciendo uso de los datos experimentales recopilados en un rango de 0-1N, estas constantes permiten generar datos y compararlos con los valores experimentales. Los resultados obtenidos muestran que...

The law of Kohlrausch for the calculation of the equivalent conductivity for strong electrolytes is fulfilled to diluted concentrations (c ≈ 0), under these conditions the effects of the molecular interactions become despicable and the model can explain the values experimentals. As the concentration increases the experimental datas move away of the linearity that the law proposes. To explain these desviations as a result of the increase of molecular interactions Theodore Shedlovsky proposed a modification of the law of Kohlrausch. The constant of this model in an atmosphere have been determined Solver of Microsoft Excel for twelve electrolytes, doing use of compiled experimental datas in arank of 0-1N. This constants allow to generate data and to compare them with the experimental values. The results sample that this model predicts the experimental data satisfactorily.

Universidad Nacional Agraria La Molina. Escuela de Posgrado. Doctorado en Ingeniería y Ciencias Ambientales

The Weather Research and Forecasting-Chemistry (WRFChem) model was used to develop an operational air quality forecast system for the Metropolitan Area of Lima-Callao (MALC), Peru, that is affected by high particulate matter concentrations episodes. In this work, we describe the implementation of an operational air quality-forecasting platform to be used in the elaboration of public policies by decision makers, and as a research tool to evaluate the formation and transport of air pollutants in the MALC. To examine the skills of this new system, an air pollution event in April 2016 exhibiting unusually elevated PM2.5 concentrations was simulated and compared against in situ air quality measurements. In addition, a Model Output Statistic (MOS) algorithm has been developed to improve outputs of inhalable particulate matter (PM10) and fine particulate matter (PM2.5) from the WRF-Chem model. ...

The present study is intended to get to know thelevels of perimeter diurnal environmental noise of fourhospitals in the city of Lima. The measurement mode usedat each hospital was A-weighting, with an integration timeof five minutes per recording. It was measured in the FASTmode with calibrations made at the beginning and end ofthe measurement day. Statistical analysis consisted of themean comparison T test which was applied at all the hospi-tals considered in the study. At the four hospitals, at all thehours of measurement and both on working days and non-working days (Sunday), LAeq mean values are higher than83 dBA. On working days, two periods of maximum noisefrom 08:00 to 10:00 in the morning and from 17:00 to 19:00in the afternoon coincide with the start and end of workinghours. The perimeter diurnal environmental noise levelsdetermined at the vicinity of four hospitals show higherv...