In adsorption and porous solids laboratory of the National Center of Scientific Research Centre (CNIC) have been obtained activated carbon from different national row materials for their use in the -protection of the environment, mainly in the adsorption of polluting gases of the atmosphere. In the present work preliminary results on the obtaining of coal activated starting from charred of coconut shell in a horizontal tubular oven with dry nitrogen as well as mixed with vapour of water as inert gas and activation temperatures of 773, 873, 973, 1073 K, are exposed. For !he evaluation of !he adsorbing features the Dubinin Theory of the micropore volume was applied to the adsorption of different vapors like the NH3 and the C02. The micropores volumes and the characteristic energy of the adsorption are determined and the products are compared to determine the besT conditions in obtaining th...

In adsorption and porous solids laboratory of the National Center of Scientific Research Centre (CNIC) have been obtained activated carbon from different national row materials for their use in the -protection of the environment, mainly in the adsorption of polluting gases of the atmosphere. In the present work preliminary results on the obtaining of coal activated starting from charred of coconut shell in a horizontal tubular oven with dry nitrogen as well as mixed with vapour of water as inert gas and activation temperatures of 773, 873, 973, 1073 K, are exposed. For !he evaluation of !he adsorbing features the Dubinin Theory of the micropore volume was applied to the adsorption of different vapors like the NH3 and the C02. The micropores volumes and the characteristic energy of the adsorption are determined and the products are compared to determine the besT conditions in obtaining th...

The construction of road works in the world has always been a challenge for engineering, especially in areas where the conditions and types of soil are not adequate for the execution of this type of projects. The present investigation has as main objective to determine the influence that has the rice husk ash (RHA) to stabilize the subgrade layer of a pavement, composed of a low resistance clayey soil. RHA is a waste and pollutant material for the environment; therefore that its use can be considered as an economic and ecological alternative. Thus, several tests were carried out where it proved the value of CBR increased from 4.30% to 20.70%, by adding a 20% RHA dosage, achieving its optimum value to be considered a very good subgrade. In this way, it is possible to affirm that the addition of RHA improves the geotechnical properties of the soil.

There are many studies about how the addition of lime and rice husk ash (RHA) gives the soil a better mechanical behavior, particularly on clayey soils, where usually fine particles reach more than 75%. However, the soils with a small presence of fine particles (59-60%) do not have much research. This analysis evaluates the influence that RHA has on this kind of soil stabilized with 3% of lime. After the initial mix of soil-lime, CBR increased 11.2 times its initial value; within the addition of the ash, the CBR averaged between 45-50% up until 28% of RHA was added, where the results decreased considerably. Soil workability improved and the specimens with more ash resulted in a more granular material, with a group index value 0 following the AASHTO standards. The greatest CBR record was obtained with the specimen of 16% RHA, 3% lime and soil, reaching a 51.3% CBR, 1.58g/cm3 of MDD and 16...

It is made an historical evaluation of the 50 years of the psychological doctor's office of the UNMSM, having identified the periods of development in four stages, that allows to valorize the specialized work, as well as the difficulties and tendencies of institutional development.

It is made an historical evaluation of the 50 years of the psychological doctor's office of the UNMSM, having identified the periods of development in four stages, that allows to valorize the specialized work, as well as the difficulties and tendencies of institutional development.

We study the effectiveness of a model training autovalia to promote resiliente behaviors and prevent violent behavior in a group of young (between 14 and 16 years).

We study the effectiveness of a model training autovalia to promote resiliente behaviors and prevent violent behavior in a group of young (between 14 and 16 years).