201 research outputs found
Modelo de Detección de Metales en Agua Mediante Uso de Sensor Inductivo
El agua es esencial para la vida y para los procesos productivos de una población, es por ello la importancia de evaluar los metales presentes en una muestra de agua, y con el uso del sensor inductivo cómo una herramienta indispensable en la automatización. No obstante, sus campos de aplicación son claramente más amplios. Así, por ejemplo, un sensor inductivo puede supervisar niveles de líquidos con ayuda de flotadores metálicos. Se propone en este trabajo que pueda explorar la contribución a la medición de metales pesados en aguas a través del uso del sensor, y que por medio del proyecto Macro en el Modelo de detección de metales en agua mediante uso de sensor UV, Conductivo e Inductivo favorezcan en el afianzamiento de la investigación, cuyo propósito es identificar los metales pesados presentes en diferentes procesos. Dónde a través del estudio con MEB se determina que las muestras de aguas residuales del municipio de Granada de una muestra de caño presentan Fe, Zr, Pb, Cr y Co y en muestras de estanque Zn, Cu, Fe, Cd, Al y Pb en pequeñas cantidades. Además, se corroboró que el metal de mayor proporción fue Fe en un 53.29% para la muestra de caño y Cu en un 10.34% en muestra de estanque. Se espera que con la construcción del prototipo con el sensor inductivo aporten en detectar objetos conductores, es decir metálicos y que dependiendo del tipo de metal se pueda comparar con los resultados obtenidos con los demás sensores.
Cuéntame + sobre medio ambiente & robótica
Recopilación de cuentos escritos por niños asociados a las temáticas de medio ambiente y robótica en instituciones educativas de municipios adscritos a la Tecnoacademia Itinerante del Meta.El águila y el león / Saudith Torres, Eliat Torres, Katerin Yepes -- Los planeta vecinos / Karen Rangel -- Madre naturaleza /Andrés Felipe Pereira Sabby -- Un día natural / Andrés Felipe Pereira Sabby -- Un paseo por el parque / Andrés Mantilla F. -- Al parecer no tan pequeño / Bryan Camilo Agudelo Galindo F. -- Adolescentes del mundo verde / Laura Camila Morales Marín -- Colores del sembrador / Levi Botero y Diego Ortiz -- El bosque / Danna Pinzón F. -- El guardián del medio ambiente / Jesús López, Santiago Martínez -- El planeta enfermo / Gabriela Rivadeneira, Emily Medina, Nelvis Torres -- El problema ambiental / Sofía Rojas -- Cuento ambiental los jóvenes del planeta verde / Heidy Luque F. -- El sueño / Heidy Luque F. -- El medio ambiente y los humanos / Iván David Aguillón Orjuela – Emma y el pingüino perdido / Joshep López F. -- Ayudando al planeta / Juan David Pérez F. -- Cuento sobre el medio ambiente / Juan David Pérez Moreno -- Cuidemos el medio ambiente / Nixon Santiago Fuentes -- Superando todo tipo de obstáculos / Jhon Torres, Wilfran Quisacue -- El bosque y su bello esplendor / Tatiana Calderón F. -- Los desplazados / Angelo Esneider Rey Vargas -- El primer televisor de la historia / Claudia Daniela Piedrahíta -- Cuidemos la vida acuática / Schneider Steven Barrera – El señor árbol / Deyvid Rodríguez Ramírez -- El bosque y sus maravillas / Maikol Andrés Tevero Ramírez -- El medio ambiente / Sarah Valentina Montero -- El medio ambiente / Freddy Andrés Zabal -- El medio ambiente / Maikol Andrés Tejero Ramírez -- Desenlace / Maikol Andrés Tejero Ramírez -- El pez robot / Samuel Saray Quevedo -- Un robot en mi casa / Jaime Leonardo Calderón Betancurt, Dayanna Nicol Torres González -- Jardín curioso / Juan David Jaramillo F. – Pedro el castor / Kevin Stiven Rojas Silva -- El bosque herido / Laura Nieto Cabuyaro -- Protejamos la sabana / Laura Valentina Bobadilla Galindo -- La gota de agua / Lizeth Barreiro Rodríguez -- Los protectores del bosque / Samuel Santiago Cifuentes -- Cuidemos nuestro planeta / Luis Alejandro Ramos Céspedes -- El W / María Alejandra Torres Ochoa -- El medio ambiente -- Mi lugar favorito -- Mi naturaleza mi vida / Tatiana Corredor -- El tesoro pedido / Santiago Muñoz Gutiérrez -- Sin agua no hay vida / Tatiana Corredor -- Cuento medio ambiente / Juan Camilo Ocampo Aguilar -- El bosque y sus maravillas / Maikol Andrés Tevero Ramírez -- El medio ambiente -- Conquistando la luna / Ana Higuera Cabuyarona85 página
Global assessment of marine plastic exposure risk for oceanic birds
Plastic pollution is distributed patchily around the world’s oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during foraging and migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species
Azimuthal anisotropy of charged jet production in root s(NN)=2.76 TeV Pb-Pb collisions
We present measurements of the azimuthal dependence of charged jet production in central and semi-central root s(NN) = 2.76 TeV Pb-Pb collisions with respect to the second harmonic event plane, quantified as nu(ch)(2) (jet). Jet finding is performed employing the anti-k(T) algorithm with a resolution parameter R = 0.2 using charged tracks from the ALICE tracking system. The contribution of the azimuthal anisotropy of the underlying event is taken into account event-by-event. The remaining (statistical) region-to-region fluctuations are removed on an ensemble basis by unfolding the jet spectra for different event plane orientations independently. Significant non-zero nu(ch)(2) (jet) is observed in semi-central collisions (30-50% centrality) for 20 <p(T)(ch) (jet) <90 GeV/c. The azimuthal dependence of the charged jet production is similar to the dependence observed for jets comprising both charged and neutral fragments, and compatible with measurements of the nu(2) of single charged particles at high p(T). Good agreement between the data and predictions from JEWEL, an event generator simulating parton shower evolution in the presence of a dense QCD medium, is found in semi-central collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Peer reviewe
Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC
Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe
Forward-central two-particle correlations in p-Pb collisions at root s(NN)=5.02 TeV
Two-particle angular correlations between trigger particles in the forward pseudorapidity range (2.5 2GeV/c. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B. V.Peer reviewe
Event-shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at root(NN)-N-S=2.76 TeV
Peer reviewe
Global assessment of marine plastic exposure risk for oceanic birds
Plastic pollution is distributed patchily around the world’s oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during foraging and migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species
Global assessment of marine plastic exposure risk for oceanic birds
Plastic pollution is distributed patchily around the world's oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during foraging and migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species.B.L.C., C.H., and A.M. were funded by the Cambridge Conservation Initiative’s Collaborative Fund sponsored by the Prince Albert II of Monaco Foundation. E.J.P. was supported by the Natural Environment Research Council C-CLEAR doctoral training programme (Grant no. NE/S007164/1). We are grateful to all those who assisted with the collection and curation of tracking data. Further details are provided in the Supplementary Acknowledgements. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Peer reviewe
- …