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tesis de grado
Universidad Nacional Agraria La Molina. Facultad de Ciencias. Departamento Académico de Ingeniería Ambiental, Física y Meteorología
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La investigación tuvo como propósito el cálculo de la Huella de Carbono de la Facultad de Ingeniería Ambiental de la Universidad Nacional de Ingeniería, LimaPerú, con la finalidad de establecer la contribución de la Facultad a las emisiones de CO2 en el periodo académico 2018 – 1 e identificar su aporte a nivel local y nacional, a partir del cual se propusieron medidas de reducción para los factores que aportan a la Huella de Carbono. El cálculo se basó en los principios y procedimientos del Protocolo para Gases de Efecto Invernadero (GHG Protocol) según los alcances establecidos en dicho documento para determinar las emisiones directas (Alcance 1), emisiones indirectas (Alcance 2) y otras emisiones indirectas (Alcance 3). La información fue obtenida de fuentes como: reportes de la Facultad del consumo de papel, número de estudiantes, profesores, personal administrativo y...
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tesis de grado
Food, due to its high handling, is more prone to contamination. This damage not only occurs when it comes into contact with the customer and the seller, but it can also occur at any stage of the food production chain because the products pass from hand to hand and from place to place, so it is necessary to perform its disinfection constantly at least 3 times a day. Currently, it has been identified that at the production stage, food can be affected if contaminated freezers are used either for washing, packaging, or cooling. During the slaughter process, microbes surrounding the slaughtered animal can end up in the final meat products. If any microbes contaminate the food processing lines, they can spread and affect other foods in contact. According to the WHO (World Health Organization), it is estimated that around 600 million people worldwide fall ill from contaminated food every year a...
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artículo
Publicado por
Sokhi, Ranjeet S., Singh, Vikas, Querol, Xavier, Finardi, Sandro, Targino, Admir Créso, Andrade, Maria de Fatima, Pavlovic, Radenko, Garland, Rebecca M., Massagué, Jordi, Kong, Shaofei, Baklanov, Alexander, Ren, Lu, Tarasova, Oksana, Carmichael, Greg, Peuch, Vincent-Henri, Anand, Vrinda, Arbilla, Graciela, Badali, Kaitlin, Beig, Gufran, Belalcazart, Luis Carlos, Bolignano, Andrea, Brimblecombe, Peter, Camacho, Patricia, Casallas, Alejandro, Charland, Jean-Pierre, Choi, Jason, Chourdakis, Eleftherios, Coll, Isabelle, Collins, Marty, Cyrys, Josef, Cleyton, Martins, da Silva, Cleyton Martins, Di Giosa, Alessandro Domenico, Di Leo, Anna, Ferro, Camilo, Gavidia-Calderon, Mario, Gayen, Amiya, Ginzburg, Alexander, Godefroy, Fabrice, Gonzalez, Yuri Alexandra, Guevara-Luna, Marco, Haque, Mafizul, Havenga, Henno, Herod, Dennis, Horrak, Urmas, Hussein, Tareq, Ibarra, Sergio, Jaimes, Monica, Kaasik, Marko, Khaiwal, Ravindra, Kim, Jhoon, Kousa, Anu, Kukkonen, Jaakko, Kulmala, Markku, Kuula, Joel, La Violette, Nathalie, Lanzani, Guido, Liu, Xi, MacDougall, Stephanie, Manseau, Patrick M., Marchegiani, Giada, McDonald, Brian, Vardhan Mishra, Swasti, Molina, Luisa T., Mooibroek, Dennis, Mor, Suman, Moussiopoulos, Nicolas, Murena, Fabio, Niemi, Jarkko V., Noe, Steffen, Nogueira, Thiago, Norman, Michael, Pérez-Camaño, Juan Luis, Petajä, Tuukka, Piketh, Stuart, Rathod, Aditi, Reid, Ken, Retama, Armando, Rivera, Olivia, Rojas, Néstor Y., Rojas Quincho, Jhojan Pool, San José, Roberto, Sanchez, Odón R., Seguel, Rodrigo J., Sillanpää, Salla, Su, Yushan, Tapper, Nigel, Terrazas, Antonio, Timonen, Hilkka, Toscano, Domenico, Tsegas, George, Velders, Guus J.M., Vlachokostas, Christos, von Schneidemesser, Erika, VpM, Rajasree, Ravi, Yadav, Zalakeviciute, Rasa, Zavala, Miguel
Publicado 2021 Enlace
This global study, which has been coordinated by the World Meteorological Organization Global Atmospheric Watch (WMO/GAW) programme, aims to understand the behaviour of key air pollutant species during the COVID-19 pandemic period of exceptionally low emissions across the globe. We investigated the effects of the differences in both emissions and regional and local meteorology in 2020 compared with the period 2015–2019. By adopting a globally consistent approach, this comprehensive observational analysis focuses on changes in air quality in and around cities across the globe for the following air pollutants PM2.5, PM10, PMC (coarse fraction of PM), NO2, SO2, NOx, CO, O3 and the total gaseous oxidant (OX = NO2 + O3) during the pre-lockdown, partial lockdown, full lockdown and two relaxation periods spanning from January to September 2020. The analysis is based on in situ ground-based ai...
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tesis de grado
La presente investigación tiene como objetivo general determinar la relación entre gestión logística y el desempeño logístico en los operadores logísticos de comercio exterior antes y durante la pandemia COVID 19 en Lima, al 2020. En la metodología, se utiliza el uso de cuestionarios validados confiables para la obtención de resultados correlacionales, posee un alcance correlacional, un diseño no experimental transversal, enfoque cuantitativo, dado que se utilizaron encuestas que se procesaron exclusivamente a través de procedimientos estadísticos. La población fueron los 54 operadores logísticos en Lima y el Callao hasta el 2019 de acuerdo al directorio empresarial de Promperú y se tomó como muestra a 32 operadores logísticos. La unidad de estudio son los operadores logísticos que han atravesado deficiencias en sus operaciones, a causa de la pandemia en el Perú. Se ut...
6
tesis de maestría
The objective of the present study was to determine the effect of three hormonal inducers (EPC, Conceptal®, and Ovaprim®) on spawning induction and spermiation in the reproduction of black-winged palmetto Myleus schomburgkii, (0.70 ± 0.10 kg of weight and 27.81 ± 1.25 cm in length in males and 0.72 ± 0.29 kg in weight and 28.84 ± 3.56 cm in length in females). The reproducers were captured from the natural environment (Downstream community Santa Clara River Nanay) and transported to the facilities of the "Fernando Alcántara Bocanegra" Research Center of the IIAP, Iquitos. The protocols were applied in a 12-hour interval, which were performed in two doses (the first 10% of the total calculated and the second 90% of the total dose calculated): T1 (EPC): 6 mg / kg in females and 2 mg / kg in males; T2 (Conceptal) 2.5 ml / kg in females and 1.5 ml / kg in males and; T3: (Ovaprim) 0.50...