Browsing Química by Procedence

Now showing items 1-7 of 7

    • Bioassay-guided isolation of anti-inflammatory O-sulfated withanolides from Acnistus arborescens (Solanaceae) 

      Steinbrueck, Clara; Mora Ugalde, Nohelia; Morales Sánchez, Carlos; Loaiza Montoya, Randall; García Piñeres, Alfonso J.; Araya Barrantes, Juan José (2019)
      Bioassay-guided fractionation of Acnistus arborescens (Solanaceae) organic extract afforded two anti-inflammatory withanolides: 2,3-Dihydro-3β-O-sulfate withacnistin (1) and 2,3-Dihydro-3β-O-sulfate withaferin A (2) showing ...

    • Bocaparvovirus, Erythroparvovirus and Tetraparvovirus in New World Primates from Central America 

      Chaves Ramírez, Andrea; Ibarra Cerdeña, Carlos N.; López Pérez, Andrés; Monge Solano, Otto; Avendaño Vega, Roberto; Ureña Saborío, Hilary; Chavarría Vargas, Max; Zaldaña, Karla; Sánchez, Lucía; Ortíz Malavasi, Edgar; Suzán, Gerardo; Foley, Janet; Gutiérrez Espeleta, Gustavo A. (2020)
      Parvoviruses in the genera Bocaparvovirus (HBoV), Erythroparvovirus (B19) and Tetraparvovirus (PARV4) are the only autonomous parvoviruses known to be associated with human and non‐human primates based on studies and ...

    • Influence of rice field agrochemicals on the ecological status of a tropical stream 

      Jessen Rasmussen, Jes; Carazo Rojas, Elizabeth; Muñoz Rivera, Alejandro; Reiler, Emilie Marie; Matarrita Rodríguez, Jessie Alejandra; Cedergreen, Nina (2016-01-15)
      Many tropical countries contain a high density of protected ecosystems, and these may often be bordered by intensive agricultural systems. We investigated the chemical and ecological status of a stream connecting an area ...

    • Metals in coastal mollusks of Costa Rica 

      Vargas Zamora, José A.; Acuña González, Jenaro; Gómez Ramírez, Eddy; Molina Delgado, Johan (2015-12)
      The input of contaminants to coastal ecosystems is a global problem on the rise. Data on metal pollution from tropical sites is often lacking and pilot surveys are urgently needed to provide a general framework to estimate ...

    • Microbial Community Structure Alogn a Horizontal Oxygen Gradient in a Costa Rican Volcanic Influeced Acid Rock Drainage System 

      Arce Rodríguez, Alejandro; Puente Sánchez, Fernando; Avendaño Vega, Roberto; Libby Hernández, Eduardo; Mora Amador, Raúl Alberto; Rojas Jiménez, Keilor; Martínez Cruz, María; Pieper, Deitmar H.; Chavarría Vargas, Max (2020-06-22)
      We describe the geochemistry and microbial diversity of a pristine environment that resembles an acid rock drainage (ARD) but it is actually the result of hydrothermal and volcanic influences. We designate this environment, ...

    • Rapid shift in microbial community structure in a neutral hydrothermal hot spring from Costa Rica 

      Rojas Gätjens, Diego; Arce Rodríguez, Alejandro; Puente Sánchez, Fernando; Avendaño Vega, Roberto; Libby Hernández, Eduardo; Conejo Barboza, Geraldine; Mora Amador, Raúl Alberto; Rojas Jiménez, Keilor; Pieper, Dietmar H.; Chavarría Vargas, Max (2020)
      In this work, we characterize the geochemistry and microbial community of Bajo las Peñas, a neutral (pH 6.5-7.4), hot spring (T = 62.0-68.0°C) located near Turrialba Volcano, Costa Rica. The microbiota at its two sources ...

    • Three new species of Gliocephalotrichum causing fruit rot on different hosts from Brazil 

      Pereira de Almeida, Camila; da Silva, Rildo Alexandre Fernandes; Reis, Ailton; Mendes Aguiar, Frederick; Chaverri Echandi, Priscila; Batista Pinho, Danilo (2020-09-18)
      The genus Gliocephalotrichum (Nectriaceae), originally described as a soil-borne fungus, has been associated with postharvest diseases, especially of tropical fruits. Taxonomic studies using both morphological and molecular ...