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  • (+)-α-copaen-8-one and other constituents from Neomirandea species 

    Tamayo Castillo, Giselle; Jakupovic, Jasmin; Castro Araya, Víctor H.; King, Robert M. (1989)
    The investigation of five Neomirandea species gave two known entclerodanes, a heliangolide, a cadinene and a new copaene derivative as well as some widespread compounds.
  • Ent-clerodane derivatives from chromolaena connivens 

    Tamayo Castillo, Giselle; Jakupovic, Jasmin; Bohlmann, Ferdinand; King, Robert M.; Robinson, Harold E. (1989)
    The aerial parts of Chromolaena connivens afforded in addition to widespread compounds four ent-clerodane derivatives and two epimeric prostaglandin-like acids. A second species, C. turnariensis, only gave widespread ...
  • Ent-clerodane derivatives and other constituents from representatives of the subgenus ageratina 

    Tamayo Castillo, Giselle; Jakupovic, Jasmin; Bohlmann, Ferdinand; Castro Araya, Víctor H.; King, Robert M. (1989)
    Ageratina ixiocladon afforded several p-hydroxyacetophenone derivatives and diterpenes including six new ent-clerodanes. Two further species, which are also placed in the subgenus Ageratina, gave p-hydroxyacetophenone ...
  • Seco-manool and other constituents from fleischmannia microstemon 

    Tamayo Castillo, Giselle; Castro Araya, Víctor H. (1988-01)
    The aerial parts of Fleischmannia microstemon afforded in addition to sesamin and two clerodanes, ent-manoyl oxide and two derivatives of the latter, one a 6β-acetoxy derivative and the other a seco-labdane. From F. pratensis ...
  • Germacranolides and other constituents from ageratzna species 

    Tamayo Castillo, Giselle; Jakupovic, Jasmin; Bohlmann, Ferdinand; Rojas, A.; Castro Araya, Víctor H.; King, Robert M. (1988)
    The aerial parts of Ageratina anisochroma gave several thymol derivatives including five new ones, a hydroxypiperitol glucoside, some substituted benzyl benzoates and several germacranolides related to provincialin. From ...
  • Clibadiolide, a sesquiterpene lactone esterified with a homoditerpene from Clibadium pittierii 

    Tamayo Castillo, Giselle; Jakupovic, Jasmin; Bohlman, F.; Castro Araya, Víctor H. (1988)
    The aerial parts of Clibadium pittierii afforded in addition to known melampolides two new ones, one being esterified with a homoditerpenic acid and the homoditerpenic acid itself. The structures were elucidated by high ...
  • Mesa 6, Parte II: Artes Literarias. IV Coloquio Internacional de Investigación y Creación Artística Centroamericana 

    Herrera Ávila, Tatiana; Chen Sham, Jorge; Lobo Bejarano, Luis Gustavo (2022-09-07)
    Este vídeo muestra la temática de "Artes Literarias" presente en el IV Coloquio internacional de investigación y creación artística centroamericana, organizado en la Sede de Occidente de la Universidad de Costa Rica. Se ...
  • Análisis de la prevalencia de los resultados negativos asociados con la medicación que se presentan en los pacientes usuarios del servicio de urgencias de la clínica Dr. Ricardo Jiménez Núñez durante un periodo comprendido entrePereira Céspedes noviembre, diciembre 2020 y enero del 2021 

    Quirós Salas, Carlos Esteban (2022-11)
    El objetivo del presente estudio es analizar la prevalencia de los resultados negativos asociados con la medicación (RNM) que se presentan en el Servicio de Urgencias (SU) de la Clínica Dr. Ricardo Jiménez Núñez, durante ...
  • Cuarenta años de Cuadernos de Antropología, herencia del Laboratorio de Etnología "María Eugenia Bozzoli Vargas" 

    Araya Jiménez, María del Carmen (2022-10)
    Este documento presenta un recuento histórico de la revista Cuadernos de Antropología, de la Universidad de Costa Rica, 1982-2021, conjuntamente con un análisis de su producción académica, según personas autoras y artículos ...
  • Taller “Análisis de situaciones que promueven el pensamiento algebraico en estudiantes de primaria. Acercando la investigación de campo” 

    Ureña Alpízar, Jason de Jesús (2022-08)
    En este taller, que se desarrollará en dos sesiones, a través de las cuales analizaremos cómo potenciar el pensamiento algebraico de estudiantes de primaria desde resultados que investigación en este campo ha arrojado. En ...
  • Connes' tangent groupoid and strict quantization 

    Cariñena Marzo, José F.; Clemente Gallardo, Jesús; Follana, Eduardo; Gracia Bondía, José M.; Rivero, Alejandro; Várilly Boyle, Joseph C. (1999-12)
    We address one of the open problems in quantization theory recently listed by Rieffel. By developing in detail Connes' tangent groupoid principle and using previous work by Landsman, we show how to construct a strict flabby ...
  • Políticas civilizatorias, geografías urbanas e inmigración china en San José, Costa Rica (1873-1950) 

    Acón Chan, Lai Sai (2022-07-01)
    Este artículo explora los vínculos existentes entre las medidas higiénicas, policiales y de ordenamiento urbano de los gobiernos liberales costarricenses, la segregación socio-espacial que inició con la conformación de una ...
  • Cfd Applied in the Optimization of A Dryer For Parchment Coffee Drying (Coffeaarabica L.) By Forced Ventilation 

    Salazar Esquivel, Randall; Rodríguez Vindas, Mauricio; Casanova Treto, Pedro; Solís Ramírez, Kattia (2018-01)
    The present study analyzes the efficiency of parchment coffee drying process in a forced greenhouse type solar dryer. The environmental conditions in the solar dryer were measured during a day of operation, in which the ...
  • Technical Assessment of Two Alcohol Generator Sets 

    Solís Ramírez, Kattia; Casanova Treto, Pedro (2018-03)
    This study aimed to evaluate the performance of two gensets, using as fuel, alcohol from fuel station and farm distillery. Specifically, to evaluate the power generation, the specific fuel consumption as well as the ...
  • COVIDiSTRESS diverse dataset on psychological and behavioural outcomes one year into the COVID-19 pandemic 

    Blackburn, Angélique M.; Vestergren, Sara; Tran, Thao P.; Stöckli, Sabrina; Griffin, Siobhán M.; Ntontis, Evangelos; Jeftic, Alma; Chrona, Stavroula; Ikizer, Gözde; Han, Hyemin; Milfont, Taciano L.; Parry, Douglas; Byrne, Grace; Gómez López, Mercedes; Acosta, Alida; Kowal, Marta; De León, Gabriel; Gallegos, Aranza; Perez, Miles; Abdelrahman, Mohamed; Ahern, Elayne; Ahmad Yar, Ahmad Wali; Ahmed, Oli; Alami, Nael H.; Amin, Rizwana; Andersen, Lykke E.; Araújo, Bráulio Oliveira; Asongu, Norah Aziamin; Bartsch, Fabian; Bavoľár, Jozef; Bhatta, Khem Raj; Bircan, Tuba; Bita, Shalani; Bombuwala, Hasitha; Brik, Tymofii; Cakal, Huseyin; Caniëls, Marjolein; Carballo, Marcela; Carvalho, Nathalia M.; Cely, Laura; Chang, Sophie; Chayinska, Maria; Chen, Fang Yu; Ch’ng, Brendan; Chukwuorji, JohnBosco Chika; Costa, Ana Raquel; Dalizu, Vidijah Ligalaba; Deschrijver, Eliane; Aldemir, Ilknur Dilekler; Doherty, Anne M.; Doller, Rianne; Dubrov, Dmitrii; Elegbede, Salem; Elizalde, Jefferson; Ermagan Caglar, Eda; Fernández Morales, Regina; García Castro, Juan Diego; Gelpí, Rebekah; Ghafori, Shagofah; Goldberg, Ximena; González Uribe, Catalina; Alpízar Rojas, Harlen Yadira; Palacios Haugestad, Christian Andres; Higuera, Diana; Hoorelbeke, Kristof; Hristova, Evgeniya; Hubená, Barbora; Huq, Hamidul; Ihaya, Keiko; Jayathilake, Gosith; Jen, Enyi; Jinadasa, Amaani; Joksimovic, Jelena; Kačmár, Pavol; Kadreva, Veselina; Kalinova, Kalina; Kandeel, Huda Anter Abdallah; Kellezi, Blerina; Khan, Sammyh; Kontogianni, Maria; Koszałkowska, Karolina; Krzysztof, Hanusz; Lacko, David; Landa Blanco, Miguel; Lee, Yookyung; Lieberoth, Andreas; Lins, Samuel; Liutsko, Liudmila; Londero Santos, Amanda; Mauritsen, Anne Lundahl; Maegli, María Andrée; Magidie, Patience; Maharjan, Roji; Makaveeva, Tsvetelina; Makhubela, Malose; Malagón, María Galvis; Malykh, Sergey; Mamede, Salomé; Mandillah, Samuel; Mansoor, Mohammad Sabbir; Mari, Silvia; Marín López, Inmaculada; Marot, Tiago A.; Martínez, Sandra; Mauka, Juma; Moss, Sigrun Marie; Mushtaq, Asia; Musliu, Arian; Mususa, Daniel; Najmussaqib, Arooj; Nasheeda, Aishath; Nasr, Ramona; Machado, Natalia Niño; Natividade, Jean Carlos; Ngowi, Honest Prosper; Nyarangi, Carolyne; Ogunbode, Charles; Onyutha, Charles; Padmakumar, K.; Paniagua, Walter; Pena, Maria Caridad; Pírko, Martin; Portela, Mayda; Pouretemad, Hamidreza; Rachev, Nikolay; Ratodi, Muhamad; Reifler, Jason; Sadeghi, Saeid; Sahayanathan, Harishanth Samuel; Sánchez, Eva; Sandbakken, Ella Marie; Sandesh, Dhakal; Sanjesh, Shrestha; Schrötter, Jana; Shanthakumar, Sabarjah; Sikka, Pilleriin; Slaveykova, Konstantina; Studzinska, Anna; Subandi, Fadelia Deby; Subedi, Namita; Sullivan, Gavin Brent; Tag, Benjamin; Delphine, Takem Ebangha Agbor; Tamayo Agudelo, William; Travaglino, Giovanni A.; Tuominen, Jarno; Türk Kurtça, Tuğba; Vakai, Matutu; Volkodav, Tatiana; Wang Wang, Austin Horng En; Williams, Alphonsus; Wu, Charles; Yamada, Yuki; Yaneva, Teodora; Yañez, Nicolás; Yeh, Yao Yuan; Zoletic, Emina (2022-06-22)
    During the onset of the COVID-19 pandemic, the COVIDiSTRESS Consortium launched an open-access global survey to understand and improve individuals’ experiences related to the crisis. A year later, we extended this line of ...
  • Memoria de las Jornadas de Investigación Transformaciones y futuro de la inclusión digital en la era post Covid-19 

    Poll Ahrens, Sylvia; Román Vega, Isabel; Bernal Aristizabal, Carlos Andrés; Amador Zamora, Alejandro; Guardamuz Flores, Felipe; Moya Rodríguez, Elídier; Mazón Villegas, Adrián; Castro Fuentes, Ana Gabriela; Villalobos Vindas, Jannixia; Murillo Herrera, Virginia; van Wijk, Karin; Castro Rojas, María Dolores; Blanco Méndez, José Alberto; Araya Orozco, Karla; Martínez Toledo, Yanet; Araya Rivera, Carlos; Carpio Carpio, Mariam; Santana, Luis Enrique (2022-07)
    Memoria de las Jornadas de Investigación y Análisis “Transformaciones y futuro de la inclusión en la era post Covid-19”, como documento que sintetiza las discusiones planteadas en las conferencias internacionales y las ...
  • Sphingolipid pathway as a biosensor of cancer chemosensitivity: a proof of principle 

    Molina Mora, José Arturo; Mesén Porras, Susana; Quirós Fernández, Isaac; Kop Montero, Mariana; Rojas Céspedes, Andrea; Quirós Barrantes, Steve; Siles Canales, Francisco; Mora Rodríguez, Rodrigo Antonio (2022-12)
    Cancer is a complex genetic disease with reduced treatment alternatives due to tumor heterogeneity and drug multiresistance emergence. The sphingolipid (SL) metabolic pathway integrates different responses of cellular ...
  • Efecto Alpízar-Mora: análisis tridimensional de la comunicación política aplicado en las elecciones costarricenses 

    Mora Martínez, Esteban Octavio; Alpízar Otoya, Claudio (2021-12)
    Este artículo propone un análisis de la comunicación política en las relaciones entre candidatos, ciudadanos y Administración Pública, para determinar los factores que prevén cambios en la gestión pública y establecer un ...
  • Two-dimensional gel electrophoresis image analysis of two Pseudomonas aeruginosa clones 

    Molina Mora, José Arturo; Chinchilla Montero, Diana; Castro Peña, Carolina; García Santamaría, Fernando (2022-11-17)
    A classical strategy to analyse the protein content of a biological sample is the two-dimensional gel electrophoresis (2D-GE). This technique separates proteins by both isoelectric point and molecular weight, and images ...
  • A nonperturbative form of the spectral action principle in noncommutative geometry 

    Figueroa González, Héctor; Gracia Bondía, José M.; Lizzi, Fedele; Várilly Boyle, Joseph C. (1998-07)
    Using the formalism of superconnections, we show the existence of a bosonic action functional for the standard K-cycle in noncommutative geometry, giving rise, through the spectral action principle, only to the Einstein ...

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