Výsledky vyhledávání - "55 Ciencias de la tierra / Earth sciences and geology"

Identificación, análisis y evaluación de riesgos asociados a la actividad minera de oro en el Municipio de Marmato, Caldas

Autor: Mario Alfonso Ustariz-Durán, Oswaldo Ordóñez-Carmona, Andrea Jimena Motta Pascuas

Publikováno v: Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia
Boletín de Ciencias de la Tierra, Vol 0, Iss 44, Pp 21-30 (2018)

En el municipio de Marmato, una región cuya tradición minera de oro ha estado presente por más de 450 años, la falta de planificación y presencia del estado ha ocasionado una crisis minero-ambiental que va desde la explotación descontrolada y c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91f1a232a9ff0ab459e2560ed767c596
https://doi.org/10.15446/rbct.n44.61646

Zobrazit plný text záznamu

Characterization and mapping of soil classes of the Lajeado Pessegueiro watershed in Santa Catarina, Brazil

Autor: Heloísa de Campos Lalane, Ludmila Nascimento Machado, Ivan Luiz Zilli Bacic, Denilson Dortzbach, Arcangelo Loss

Publikováno v: Acta Agronómica, Vol 67, Iss 2, Pp 289-296 (2018)
Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia

Pedological surveys and physiographic characterization of a watershed are fundamental procedures for planning the soil use. Thus, the aim of this study was to characterize and map the soil classes of the Lajeado Pessegueiro watershed, located in Guar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9635168a2d3f6737e261b48cf74c2952
https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/66131

Zobrazit plný text záznamu

Seasonal Hydrological and Meteorological Time Series

Autor: Jorge Alberto Achcar, Edilberto Cepeda Cuervo, Marinho G. Andrade

Publikováno v: Earth Sciences Research Journal, Vol 22, Iss 2, Pp 83-90 (2018)
Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Time series models are often used in hydrology and meteorology studies to model streamﬂows series in order to make forecasting and generate synthetic series which are inputs for the analysis of complex water resources systems. In thispaper we intro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::649e77bff95027aed43b75e3d1ad8d0d
https://revistas.unal.edu.co/index.php/esrj/article/view/65577

Zobrazit plný text záznamu

Characterization of Band-E Narges magnetite iron ore for mineral processing

Autor: Ali Pourbahaadini, Amir Pazoki, Reza Rashidi-Khabir, Reza Jahanian

Publikováno v: Earth Sciences Research Journal, Vol 22, Iss 2, Pp 145-148 (2018)
Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia

The Band-e Narges deposit is located about 70 km northeast of the city of Badrud, northern Isfahan province. Band-E Narges ore deposit is mining for magnetite. To release valuable minerals, crushing and grinding implemented for separation ore from th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::508afcd1de2aab4647e1a42cc14b1dfb
https://revistas.unal.edu.co/index.php/esrj/article/view/73438

Zobrazit plný text záznamu

Study of the relationship between hydro-mechanical soil behavior and microstructure of a structured soil

Autor: Oisy Hernández, Camila Borges, Raydel Lorenzo Reinaldo, Manoel Porfírio Cordão Neto, Bernardo Caicedo

Publikováno v: Earth Sciences Research Journal, Vol 22, Iss 2, Pp 91-101 (2018)
Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia

Structured soils, such as residual laterites or volcanic ashes, abound in tropical regions. The hydro-mechanical behavior of these soils is clearly related to their structure. New techniques based on microstructural studies constitute a powerful tool

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5011da7afca5d53d266519301a2a7aa2
https://revistas.unal.edu.co/index.php/esrj/article/view/65640

Zobrazit plný text záznamu

Automatic Identification of Calcareous Lithologies Using Support Vector Machines, Borehole Logs and Fractal Dimension of Borehole Electrical Imaging

Autor: Carmen Cecilia Contreras, Luis Hernán Ochoa, Jorge Alberto Leal

Publikováno v: Earth Sciences Research Journal, Vol 22, Iss 2, Pp 75-82 (2018)
Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia

In this research algorithms of support vector machine (SVM) and a logic function were applied to identify automatically sections of carbonate rocks in wells located in the former Barco Concession, Catatumbo Basin - Colombia. During training stages th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a56effd2712b80c274593c3d4609971
https://revistas.unal.edu.co/index.php/esrj/article/view/68320

Zobrazit plný text záznamu

Influence of plant growth-promoting rhizobacteria (PGPR) on blackberry (Rubus glaucus Benth. cv. thornless) growth under semi-cover and field conditions

Autor: Nelson Ceballos-Aguirre, Teresa Cabra-Cendales, Juan Carlos Aristizábal-Loaiza, Jacobo Robledo-Buriticá

Publikováno v: Acta Agronómica, Vol 67, Iss 2, Pp 258-263 (2018)
Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia

This study shows the effect of three plant growth-promoting rhizobacteria (PGPR) strains of the genus Bacillus on blackberry (Rubus glaucus Benth.) development under semi cover and field conditions (cropping systems). Endogenous strain Bacillus subti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::182d6e96539b3efe9bb9ac0d66c2cbe6
https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/62572

Zobrazit plný text záznamu

Honey quality of Melipona sp. bees in Acre, Brazil

Autor: Betina Raquel Cunha dos Santos, Josimar Batista Ferreira, Fábio Augusto Gomes, Marcus Augusto Damaceno do Vale

Publikováno v: Acta Agronómica, Vol 67, Iss 2, Pp 201-207 (2018)
Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia

Honey from stingless bees (Melipona sp.) is a nutritious and medicinal product economically valued in the informal Brazilian market, driven by the growing demand for natural products; however, its physicochemical characteristics are still unknown. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e89486828e3bdc59671a7d00d2bc198
https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/60836

Zobrazit plný text záznamu

Evaluation of the use of reactive oxygen species (ROS) generated through oxyion® technology in strawberry (Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier cv. Monterrey) storage

Autor: Alejandro Jimenez, Claudia Rodríguez, Rafael Andres Ramirez, Laura Restrepo

Publikováno v: Acta Agronómica, Vol 67, Iss 2, Pp 223-230 (2018)
Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia

Reactive oxygen species (ROS) play a key role in oxidative stress processes at the biological level. In most cases the presence of these chemical species is undesirable due to the impact they have on tissues and cellular structures, however, their ef

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cebfaf9da7a112d9d745b251271a3ac8
https://doi.org/10.15446/acag.v67n2.66580

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání