192,503 research outputs found
Teresa Quintero and Pat Quintero
No full textPhotograph of Teresa Quintero (wearing a crown made by Lucinda Gipson, hair ties made by Frances Farrell, and a dress made by Willis) and Pat Quintero, Oklahoma City, OK. Photo by Will T. Nelson, c. 1977
Fotografía UDBC041097
No full textFotografía del ejemplar Quintero, C. 3, determinado como Espeletiopsis rabanalensis en el año 201
Fotografía UDBC030402
No full textFotografía del ejemplar Quintero, C. 4, determinado como Pourouma cecropiifolia en el año 202
Mensajes de felicitación al general Guillermo Quintero
No full textImpreso que reproduce dos mensajes de felicitación que Carlos A. Piedrahita y Jorge S. Jaime envían al general Guillermo Quintero, comandante general de la División Quintero Calderón, en el Magdalena,por haber ganado batallas y comprometerse con la estabilidad del Estado
Prémonitions du Profe Castañeda
No full textEn 1942, cuando se iniciaba el colegio María Concepción Loperena en la colonial ciudad de Valledupar, el profesor Heriberto Castañeda, hombre distinguido y carismático, supo construir con Rafael Escalona y sus condiscípulos una relación de confianza y reconocimiento que despertó en sus espíritus juveniles admiración y respeto. El inevitable traslado del maestro, en 1943, movilizó la inspiración del novel compositor, quien plasmó sus sentimientos en el paseo "El Profe Castañeda", el primero en la lista de sus cantos legendarios.Cómo citar este artículo: QUINTERO QUINTERO, Marina, “Las premoniciones del Profe Castañeda”, Revista Educación y Pedagogía, Medellín, Universidad de Antioquia, Facultad de Educación, vol. XVIII, núm. 44, (enero-abril), 2006, pp. 107-116.Recibido: marzo 2006Aceptado: abril 2006In 1942, when María Concepción Loperena School started in the colonial city of Valledupar, the teacher Heriberto Castañeda, distinguished and charismatic man, built together with Rafael Escalona and his friends a relationship of trust and recognition which awoke in their young spirits admiration and respect. The inevitable relocation of the teacher in 1943, moved the inspiration of the novel composer how reflected his feelings on the song "El Profe Castañeda", the first on the list of legendary songs.How to reference this article: QUINTERO QUINTERO, Marina, “Las premoniciones del Profe Castañeda”, Revista Educación y Pedagogía, Medellín, Universidad de Antioquia, Facultad de Educación, vol. XVIII, núm. 44, (enero-abril), 2006, pp. 107-116.Received: march 2006Accepted: april 2006En 1942, lors de la création du lycée “María Concepción Loperena” dans la ville coloniale de Valledupar, en Colombie, le professeur Heriberto Castañeda, homme distingué et charismatique, a su construire avec le compositeur Rafael Escalona et ses confrères une relation de confiance et de reconnaissance qui a éveillé dans leurs jeunes esprits l'admiration et le respect. L'inévitable transfert de l'enseignant, en 1943, a mobilisé l'inspiration du jeune compositeur dont les sentiments se matérialisent en une composition au rythme de “paseo” qui a pour titre “El profe Castañeda” , la première sur la liste de ses chansons légendaires
Heatwaves during embryonic development reveal duration-dependent effects in zebrafish
No full textHeatwaves, defined as periods of unusually high temperatures are increasingly frequent due to climate change. It is well known that ectotherms are particularly vulnerable to heat stress, especially during sensitive life stages such as embryonic development. However, the consequences of short, ecologically relevant heat stress, remain less investigated. Here, we investigate the effects of short-term heat stress during embryonic development in zebrafish (Danio rerio). For this, 1753 embryos were exposed to simulated heatwaves of different durations (6, 24, or 48 h) and frequencies (one or two events) during development, with a temperature of 35 °C (+7 °C above the standard temperature of 28 °C). Their pre- and post-natal survival, hatching time, larval body size, and locomotor activity once hatched were evaluated. Additionally, the larval locomotor activity was assessed at control and heat-stress temperatures to determine if embryonic heat stress would result in larvae coping better with high temperatures. Our results showed that exposure to high temperatures (35 °C) increased pre-natal mortality, and further effects varied depending on the duration of the heatwave. Longer heatwaves (48 h) accelerated the rate of development but resulted in smaller larvae that swam more under heat stress, while short heatwaves (24 h and two repeated periods of 6 h) did not have any effect. Our results indicate that the embryonic stage is highly sensitive to even brief periods of heat stress, such as those experienced during a heatwave, and that the duration of exposure leads to different responses. These findings offer crucial insights into the extreme sensitivity of embryos to heatwaves and highlight wider consequences for individuals and populations, which are crucial for predicting how species will respond to ongoing climate change
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Instalación solar fotovoltaica de 100 kw. con conexión a red para empresa azulejera
No full textQuintero Gras, C. (2007). Instalación solar fotovoltaica de 100 kw. con conexión a red para empresa azulejera. https://riunet.upv.es/handle/10251/31630.Archivo delegad
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
Azolla y vermicomposta: Semblanza sobre la vida y obra del Dr. Roberto Quintero Lizaola
No full textLa presente reseña es un simbólico homenaje post mortem que la Sociedad Mexicana de la Ciencia del Suelo (SMCS) A.C., rinde a la memoria del Dr. Roberto Quintero Lizaola. El Dr. Quintero Lizaola nació en Ameca, Jalisco, México el 5 de mayo de 1958 y falleció el 22 de Agosto de 2018 en la Ciudad de Texcoco, Estado de México. Durante su vida científica, el Dr, Quintero Lizaola se distinguió como un activo militante de la SMCS, A.C. Además de participar como ponente y coordinador de mesas de trabajo en diferentes congresos, se involucró en diferentes comisiones en beneficio de ésta. Fungió como secretario general de la SMCS, A.C. de 1991 a 1995. Igualmente, participó como miembro del Comité de Acción para el Saneamiento del Ambiente (CASA), A.C. El Dr. Quintero Lizaola centró sus investigaciones en el estudio y aplicación del hecho acuático Azolla, así como en la caracterización y uso de las vermicompostas. Su legado como investigador del suelo, queda plasmado en los anales de la SMCS, A.C
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