Search Results - "Andrés Felipe León"

Recent Advances in the Gold-Catalyzed Reactions of Propargyl Esters by León Rojas, Andrés Felipe, Kyne, Sara Helen, Chan, Philip Wai Hong

“…Conspectus Late-transition-metal-based complexes represent an indispensable catalytic tool in chemical synthesis due to their ability to increase molecular…”
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Queen loss changes behavior and increases longevity in a stingless bee by dos Santos Conceição Lopes, Bárbara, Campbell, Alistair John, Contrera, Felipe Andrés León

“…The death of the queen can lead to behavioral changes in workers of eusocial bees that alter their longevity. Here, we investigated the behavior and longevity…”
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Gold-Catalyzed Double Spirocyclization of 3‑Ene-1,7-diyne Esters to Dispiroheterocycles by Chen, Jichao, Liu, Zhen, León Rojas, Andrés Felipe, Rao, Weidong, Chan, Philip Wai Hong

“…A synthetic method to prepare dispiroheterocycles containing two all-carbon quaternary centers efficiently that relies on the gold­(I)-catalyzed double…”
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Enantioselective and Regiodivergent Gold and Chiral Brønsted Acid Catalyzed Cycloisomerization/Diels–Alder Reaction of 1,10-Dien-4-yn-3-yl Acetates: Synthesis of Norbornene-Embedded Tricarbocycles by León Rojas, Andrés Felipe, Chong, Ying Yan, Kyne, Sara Helen, Xia, Bo, Chan, Philip Wai Hong

“…A synthetic method for the enantioselective and regiodivergent synthesis of hexahydro-2H-2,4a-methanonaphthalen-4-yl and octahydro-2,4-methanoazulen-1-yl…”
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Temporal variation in homing ability of the neotropical stingless bee Scaptotrigona aff. postica (Hymenoptera: Apidae: Meliponini) by Campbell, Alistair John, Gomes, Rafael Leandro Corrêa, da Silva, Karoline Chaves, Contrera, Felipe Andrés León

“…Body size is a known predictor of foraging distance in stingless bees (Apidae: Meliponini). However, effects of seasonality on foraging distances, particularly…”
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First Records of Heartbeats via ECG in a Stingless Bee, Melipona flavolineata (Apidae, Meliponini), during Contention Stress Using Isoflurane as an Anesthetic by Contrera, Felipe Andrés León, Lopes, Bárbara dos Santos Conceição, Paz, Clarissa Araújo da, Hamoy, Maria Klara Otake, Santos, Murilo Farias dos, Barbosa, Gabriela Brito, Amaral, Anthony Lucas Gurgel do, Pinho, Luiz Henrique Barbosa de, Hamoy, Moisés

“…The hemodynamic activity of Melipona flavolineata workers was evaluated during restraint stress for a period of 30 min. The observed parameters were power…”
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Clustering and heuristics algorithm for the vehicle routing problem with time windows by Villalba, Andrés Felipe León, Rotta, Elsa Cristina González La

“…This article presents a novel algorithm based on the cluster first-route second method, which executes a solution through K-means and Optics clustering…”
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Collaborative distribution: strategies to generate efficiencies in urban distribution - Results of two pilot tests in the city of Bogotá by Gutiérrez Rubiano, Diego Felipe, Hincapié Montes, Jose Alejandro, León Villalba, Andrés Felipe

“…The urban freight distribution (UFD) processes represent externalities and inefficiencies to the community and the private actors involved. The enterprise…”
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Muscle activity of the Lumbo-pelvic-hip complex in three isometric exercises using TRX ® rip trainer™ (Actividad muscular del complejo Lumbo-Pelvis-Cadera en tres ejercicios isométricos usando TRX® rip trainer™) by Flores-Leon, Andres Felipe, Soto, Valeria, Araneda, Oscar Florencio, Guzman-Venegas, Rodrigo, Berral de la Rosa, Francisco José

“…One of the tools currently used for strengthening the lumbo-pelvic-hip complex (LPHC) is the TRX ® Rip Trainer™. This device produces asymmetric destabilizing…”
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Soil Waterlogging Conditions Affect Growth, Water Status, and Chlorophyll “a” Fluorescence in Coffee Plants (Coffea arabica L.) by León-Burgos, Andrés Felipe, Unigarro, Carlos Andrés, Balaguera-López, Helber Enrique

“…Soil waterlogging is an environmental limitation that is promoted by changes in rainfall patterns and negatively affects plant physiology, growth, and…”
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Increased fruit load influences vegetative growth, dry mass partitioning, and bean quality attributes in full-sun coffee cultivation by León-Burgos, Andrés Felipe, Sáenz, José Raúl Rendón, Quinchua, Luis Carlos Imbachi, Toro-Herrera, Mayra Alejandra, Unigarro, Carlos Andrés, Osorio, Valentina, Balaguera-López, Helber Enrique

“…Coffee fruits are highly competitive compared to other functional sink organs. This can affect the vegetative growth of the shoot, dry mass partitioning, and…”
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Sobre el desajuste espacial. Un acercamiento conceptual y contextual en casos colombianos by Barreto, Felipe Andrés David León

“…Este artículo tiene como objetivo central, definir el desajuste espacial a partir de dos revisiones, una conceptual sobre espacio y territorio, y desde tres…”
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Practical meliponiculture: use of trap boxes to control Tracuá Carpenter ants (Camponotus atriceps Smith, 1858), an important natural enemy by Oliveira, Mikail Olinda de, Cavalcante, Marcelo Casimiro, Bomfim, Isac Gabriel Abrahão, Contrera, Felipe Andrés León

“…This study aimed to observe the attractiveness efficiency of trap boxes installed in collective shelters of stingless bee colonies (Melipona flavolineata,…”
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Temporal Memory in Foraging of the Stingless Bee Melipona subnitida (Hymenoptera: Apidae: Meliponini) by Guimarães Silva, Albeane, Carvalho, Gracy Chrisley Alencar, De Miranda, Ana Catarina, Contrera, Felipe Andrés León, Rêgo, Márcia Maria Corrêa

“…Bees feed on nectar and pollen, however these resources are often available to floral visitors during restricted temporal windows. The presence of temporal…”
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Stingless Bees Fed on Fermented Soybean-extract-based Diet Had Reduced Lifespan than Pollen-Fed Workers by Queiroz, Ana Carolina M., Leão, Kamila Leão, Contrera, Felipe Andrés León, Teixeira, Joyce C.S., Menezes, Cristiano

“…Nectar and pollen are the basic food resources of stingless bees. The current advance of meliponiculture led to the search for supplementary feeding. Despite…”
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The Life Histories of the "Uruçu Amarela" Males (Melipona flavolineata, Apidae, Meliponini) by Veiga, Jamille Costa, Leão, Kamila Leão, Coelho, Beatriz Woiski, Queiroz, Ana Carolina Martins de, Menezes, Cristiano, Contrera, Felipe Andrés León

“…Here we describe the life histories of adult males of the the Amazonian stingless bee Melipona flavolineata Friese, commonly known as “uruçu amarela”. Males…”
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Nucleic acid-based biosensors: analytical devices for prevention, diagnosis and treatment of diseases by Carvajal Barbosa, Laura, Insuasty Cepeda, Diego, León Torres, Andrés Felipe, Arias Cortes, Maria Mercedes, Rivera Monroy, Zuly Jenny, Garcia Castaneda, Javier Eduardo

“…BACKGROUND : Biosensing techniques have been the subject of exponentially increasing interest due to their performance advantages such as high selectivity and…”
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Varying fruit loads modified leaf nutritional status, photosynthetic performance, and bean biochemical composition of coffee trees by León-Burgos, Andrés Felipe, Sáenz, José Raúl Rendón, Quinchua, Luis Carlos Imbachi, Unigarro, Carlos Andrés, Osorio, Valentina, Khalajabadi, Siavosh Sadeghian, Balaguera-López, Helber Enrique

“…•Photosynthetic activity is related to the fruit development stage.•The leaf concentrations of N, K, S and Cu significantly decreased with high fruit load.•The…”
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COLONY DEVELOPMENT AND MANAGEMENT OF THE STINGLESS BEE SCAPTOTRIGONA AFF. POSTICA (APIDAE, MELIPONINI) IN DIFFERENT HIVE MODELS by Leão, Kamila Leão, De Queiroz, Ana Carolina Martins, Veiga, Jamille Costa, Contrera, Felipe Andrés León, Venturieri, Giorgio Cristino

“…Meliponiculture, i.e. indigenous beekeeping, is an old activity in the Americas and is widely distributed throughout Brazil. However, since stingless bee…”
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Fitting growth curves of coffee plants in the nursery stage of growth: A functional approach by León-Burgos, Andrés Felipe, Ramírez, Carlos, Rendón Sáenz, José Raúl, Imbachi-Quinchua, Luis Carlos, Unigarro-Muñoz, Carlos Andrés, Balaguera-Lopez, Helber Enrique

“…The growth patterns of coffee plants are determined by interactions between genetic, physiological, and climate factors. The objective of this study was to…”
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