La conservación de bosques en el marco de los Objetivos del Desarrollo Sostenible: Participación de la universidad

En la siguiente presentación se detalla la conservación de bosques en el marco de los Objetivos del Desarrollo Sostenible donde menciona la conservación de los bosques y la lucha contra la desertificación

Ciencia para el Desarrollo Sostenible: Agenda 2030

En la siguiente presentación se detalla la Agenda 2030 donde menciona la Cumbre para el Desarrollo Sostenible, que se llevó a cabo en septiembre de 2015, los Estados Miembros de la ONU aprobaron la Agenda 2030 para el Desarrollo Sostenible, para poner fin a la pobreza, luchar contra la desigualdad y la injusticia, y hacer frente al cambio climático

Ciencia para el Desarrollo Sostenible: Agenda 21

En la siguiente presentación se detalla Ciencia para el Desarrollo Sostenible donde menciona las funciones de la ciencia debe ser suministrar información para permitir una mejor formulación y selección de las políticas relativas al medio ambiente

Determinación de escenarios de inundaciones en la subcuenca del río Cunas, Junín, Perú

Se presenta una metodología basada en el procesamiento del modelo digital del terreno en SAGA-GIS para determinar los escenarios de inundaciones en caso de lluvias intensas o prolongadas en la subcuenca del río Cunas, Junín, Perú. Las variables calculadas a partir del DTM ALOS PALSAR fueron: Depresiones cerradas (CD), Distancia vertical a la red de drenaje (VD), Área de captación modificada (MCA), Escorrentía superficial - Escorrentía terrestre flujo D8, y el índice de humedad topográfico (TW1). La susceptibilidad a las inundaciones se obtiene como CD + MCA + D8 + TW1- VD. El mapa resultante validado en el campo, muestra diferentes grados de susceptibilidad a inundaciones, destacando tres sectores donde un grupo significativo de núcleos de población se encuentran expuestos a potenciales inundaciones de grado medio a alto

Determinación de escenarios de inundaciones en la subcuenca del río Cunas, Junín, Perú

Se presenta una metodología basada en el procesamiento del modelo digital del terreno en SAGA-GIS para determinar los escenarios de inundaciones en caso de lluvias intensas o prolongadas en la subcuenca del río Cunas, Junín, Perú. Las variables calculadas a partir del DTM ALOS PALSAR fueron: Depresiones cerradas (CD), Distancia vertical a la red de drenaje (VD), Área de captación modificada (MCA), Escorrentía superficial - Escorrentía terrestre flujo D8, y el índice de humedad topográfico (TW1). La susceptibilidad a las inundaciones se obtiene como CD + MCA + D8 + TW1- VD. El mapa resultante validado en el campo, muestra diferentes grados de susceptibilidad a inundaciones, destacando tres sectores donde un grupo significativo de núcleos de población se encuentran expuestos a potenciales inundaciones de grado medio a alto

Cadmium, Lead and Zinc in the Soil-Plant-Alpaca System and Potential Health Risk Assessment Associated with the Intake of Alpaca Meat in Huancavelica, Peru

The consumption of contaminated natural pastures with highly dangerous and toxic heavy metals such as cadmium (Cd) and lead (Pb) by Andean camelids could cause harmful effects on the health of people exposed via consumption of contaminated alpaca meat. The concentration of Cd, Pb and Zn in the soil-plant-alpaca system was determined and the potential health risk associated with the intake of alpaca meat was evaluated. Soil and grass samples were collected in grazing areas of the South American camelid, and in the Municipal Slaughterhouse of Huancavelica, 30 samples of alpaca pectoral muscle were collected. The concentrations of Cd in the soil, grass and alpaca muscle exceeded the threshold values of national and international standards. The bioaccumulation factor values of the three elements studied was less than 1, Cd was the element with the highest bioavailability and mobility in the soil-plant-alpaca muscle system. The mean concentration of Cd in muscle was 0.335 ± 0.088 mg/kg which exceeded the maximum level allowed by the FAO/WHO and the European Commission, the concentration of Pb and Zn did not exceed the regulated limits. No significant differences were detected in accumulation according to sex. The non-carcinogenic hazard index (HI) values for the studied metals indicated that there is no adverse health risk (HI < 1) for children and adults from alpaca meat intake, but they could experience carcinogenic risk from prolonged exposure to Cd, and for exceeding the 1×10–4 limit threshold. It is recommended to conduct further studies on the accumulation of potentially toxic elements in alpaca tissues in order to determine the possible total risk of heavy metals in consumer’s health

Daytime perimeter environmental noise in the vicinity of four hospitals in the city of Lima, Peru

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 highervalues in all cases to those established by the Peruvian Na-tional Environmental Standards for Noise for special pro-tection areas both for working days and for non-workingdays. Noise that comes from the dense and disorganizedtraffic of Lima plays a fundamental role in this behaviou

Electrocoagulation in batch mode for the removal of the chemical oxygen demand of an effluent from slaughterhouse wastewater in Lima Peru: Fe and Al electrodes

In order to study the treatment of wastewater from a meat plant in a batch reactor, the electrocoagulation (EC) process with aluminum and iron electrodes was applied. Foams formed with iron electrodes show brown, greenish, and reddish colors, and foams formed with aluminum electrodes mainly show a whitish color. The effects of the applied voltages (6, 8, and 10 V) were analyzed over time on parameters such as current density (A/m2 ), pH, temperature, removal percentage of ionic conductivity (µS/cm), turbidity (nephelometric turbidity units), chemical oxygen demand (COD), thermotolerant coliforms, and oil–grease. The removal efficiencies for turbidity and COD in meat industry wastewater-slaughterhouse wastewater that were obtained were 99%, and 53%–59%, for aluminum, and 81.5%–88.5%, and 59%–60% for iron electrodes and 25 min EC time respectively. At 6 V the energy consumption per unit volume of treated effluent (kg/m³) and per kg COD removed (kwh/kg COD) with Al and Fe electrodes were (3.07 and 0.84) and (2.99 and 0.90), respectively. The EC process with Al and Fe electrodes proved to be a technique that removes contaminants from slaughterhouse wastewater with good yields