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| Registros recuperados: 9.178 | |
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| Silva,M; Calderón,N. |
| Se evaluó la tasa de maduración in vitro post descongelación de ovocitos bovinos, de la raza Frisón Rojo Chileno, parcialmente madurados y vitrificados. Complejos Cúmulus-ovocito fueron obtenidos por aspiración folicular, clasificados morfológicamente y aleatoriamente cultivados in vitro en TCM199 (10 % Suero Fetal Bovino (SFB), 50 mg/mL gentamicina, 0,2 mM piruvato de sodio, 0,08 µg/mL FSH, 1 µg/mL LH y 1 µg/mL estradiol) en los grupos: a) control (n= 137), madurados por 24 h a 38,5 C, 5 % CO2 y 99 % humedad y, b) tratamiento (n= 156), madurados por 6 h, parcialmente denudados, e incubados hasta completar 20 h, para luego ser vitrificados por el método Open Pulled Straws (OPS). Los ovocitos fueron expuestos a la solución de vitrificación uno (SV1) (Buffer... |
| Tipo: Journal article |
Palavras-chave: Ovocitos; Vitrificación; Maduración in vitro; Frisón Rojo Chileno. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300003 |
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| The triploid plantain landrace Obino lEwai (Musa spp., AAB genome) has been crossed with a wild diploid banana (M. acuminata subsp. burmannica var. Calcutta 4, AA genome) to generate full-sib diploid and tetraploid hybrids combining good agronomic performance and disease resistance. Microsatellite marker analysis of the parental genotypes confirmed the highly heterozygous nature of both parental genotypes. Comparative analysis of 2x and 4x full-sib hybrids with their parental genotypes indicated that tetraploid hybrids are generally more closely related to Obino lEwai than their diploid full-sibs. Based on VNTR analysis it is possible to identify those hybrids, which may be most useful in subsequent breeding of secondary triploid hybrids. There was a... |
| Tipo: Journal article |
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| Ano: 1999 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34581999000300002 |
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| Gianelli Barra,María Pía; Ponce-Díaz,María Cristina; Venegas-Gallegos,César. |
| Headspace solid-phase microextraction (SPME) with an 85 µm Carboxen polydimethylsiloxane (CAR/PDMS) fiber was used to extract volatile compounds, and a gas chromatograph equipped with a mass spectometry detector (GC-MS) was used to identify the volatile compounds in honeys. Thirty-four different volatile compounds from the headspace of honey produced in the central valley of Ñuble Province, Chile, were extracted with fiber coating CAR/PDMS. The identified compounds were: 10 alcohols, 9 acids, 6 ketones, 3 aldehydes, 2 furans, 2 terpenes and 2 lactones. Only four of the volatile compounds had never been reported before as honey compounds; these being: 1,3-propanodiol, 2-methyl butanoic acid, 3,4-dimethyl-3-hexen-2-one, and 6-methyl-5-octen-2-one. These four... |
| Tipo: Journal article |
Palavras-chave: Solid phase microextraction; Volatile compounds; Honey. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100008 |
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| Ottone,Nicolás Ernesto; Vargas,Claudia A; Fuentes,Ramón; del Sol,Mariano. |
| Walter Thiel developed the method that enables preservation of the body with natural colors in 1992. It consists in the application of an intravascular injection formula, and maintaining the corps submerged for a determinate period of time in the immersion solution in the pool. After immersion, it is possible to maintain the corps in a hermetically sealed container, thus avoiding dehydration outside the pool. The aim of this work was to review the Thiel method, searching all scientific articles describing this technique from its development point of view, and application in anatomy and morphology teaching, as well as in clinical and surgical practice. Most of these studies were carried out in Europe. We used PubMed, Ebsco and Embase databases with the... |
| Tipo: Journal article |
Palavras-chave: Embalming; Dissection; Walter Thiel; Surgical training; Review. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000400044 |
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| Cortés,Arturo; Rosenmann,Mario; Bozinovic,Francisco. |
| Studies on water balance in desert-dwelling granivorous rodents use evaporative water loss (EWL) and metabolic water production (MWP) to evaluate the efficiency of water regulation, expressed by the model Ta @ MWP = EWL, defined by an ambient temperature (Ta) value at (@) which MWP/EWL = 1. Here we evaluate and apply this model (1 - r²) determining water regulation efficiency, based on the energetic cost (MR) to maintain water balance (WB), that is MR-WB. To test the model, EWL was measured and MWP estimated in nine species of rodents from different localities of northern and north-central Chile (II and IV Regions): Octodon degus (Od) and O. lunatus (Olu) (Octodontidae), Abrothrix olivaceus (Ao), A. longipilis (Al), A. andinus (Ad), Phyllotis darwini (Pd),... |
| Tipo: Journal article |
Palavras-chave: Rodents; Water economy; Arid habitats; Chile. |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000200006 |
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| SABAT,PABLO; NESPOLO,ROBERTO F; BOZINOVIC,FRANCISCO. |
| Birds living in desert environments have been the preferred models for the study of physiological adaptations to water scarcity. Passerine birds living in marine coastal habitats face similar problems, yet physiological adaptations to water conservation in such species have been poorly documented. We measured total evaporative water loss (TEWL) and rates of oxygen consumption (VO2) in three species of passerine birds dwelling in marine and fresh water habitats. Mass specific total evaporative water loss was significantly lower in the marine species, Cinclodes nigrofumosus, than in species inhabiting areas near freshwater sources. We found a positive relationship between TEWL and VO2. The ratio of TEWL to VO2 (relative evaporative water loss, RTEWL) showed... |
| Tipo: Journal article |
Palavras-chave: Evaporative water loss; Cinclodes; Osmoregulation; Passerines; Salt. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000200001 |
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| Quezada,C; Fischer,S; Campos,J; Ardiles,D. |
| Water management efficiency is a key issue for sustainable agriculture development, since it is necessary to get a higher biomass production per unit of applied water. This study aimed to determine both water requirements and water use efficiency (WUE) and their effect on yield and quality parameters in carrots (Daucus carota L.), during the 2006 - 2007 growing season in Chilian, Chile (36° 35' 43.2" S, 72° 04' 39" W, 140 m altitude). The water treatments applied were 25, 50, 75, 100 and 125 % pan evaporation (Epan) in a Haploxerand soil under drip irrigation. The results showed that the highest crop yield was obtained with 100% Epan treatment. However, the highest WUE was found in the 75% Epan treatment equivalent to 3864 m³ ha-1, which is the recommended... |
| Tipo: Journal article |
Palavras-chave: Water content; Roots quality; Water stress; Andisols. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000100002 |
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| Atala,Cristian. |
| Se midió la conductancia hidráulica específica (Ks) y el intercambio de gases en individuos de D. dendroides (Polytrichaceae, Musci). Ks fue más alta que en algunas coníferas y comparable con algunas angiospermas leñosas, pero la fotosíntesis (Amax) fue relativamente baja. Los resultados muestran que una planta no vascular puede alcanzar altos valores de Ks, sugiriendo un funcionamiento "vascular" similar a las traqueófitas. |
| Tipo: Journal article |
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| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000100008 |
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| Katsaros,Kristina B. |
| During days with strong insolation and low wind speed, there may be uneven net heating of the water layer near the surface of the ocean caused by variations in horizontal temperature at the sea surface. The heat loss from the water caused by evaporation, sensible, or longwave radiation is proportional to the sea surface temperature and is, therefore, greater from warm water compared to that from the relatively colder water. As a result, under low wind speed conditions and clear skies, the horizontal SST discontinuities, occurring at fronts, eddies, or in storm wakes, may diminish or even vanish. This phenomenon is illustrated here with some field and modeling results. The time dependence is important for the impact on remote sensing of SST, and it is found... |
| Tipo: Journal article |
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| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200055 |
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| Farfán C,Emilio; Schneeberger L,Daniela; Besa H,Jovita; Salgado A,Guillermo; Inzunza H,Oscar. |
| La permanente actualización de los programas curriculares de educación médica ha generado discusión respecto a los modelos de aprendizaje utilizados para las ciencias morfológicas, tema muy en boga hoy en día, debatido por profesores de morfología y especialistas en docencia. El presente trabajo da a conocer el modelo de enseñanza morfológica utilizado en el departamento de Anatomía Normal de la Pontificia Universidad Católica de Chile, el cual se ha desarrollado consecuentemente con los cambios curriculares realizados por la escuela de medicina, logrando adaptarse a los nuevos tiempos y nuevas tecnologías. Este modelo de aprendizaje constructivista se basa en estudio guiado y auto dirigido con material web creado especialmente para cada curso,... |
| Tipo: Journal article |
Palavras-chave: Anatomía; Educación; Web. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100020 |
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| Naeem,Muhammad; Ata Cheema,Zahid; Ahmad,Azraf-ul-Haq; Wahid,Abdul; Kamaran,Muhammad; Arif,Muhammad. |
| Weeds cause huge losses due to their competition with crops. Intercropping of wheat (Triticum aestivum L.) with canola (Brassica napus L.) under different spatial arrangements was evaluated for their effects on weeds and interaction between the crops at the Agronomic Research Area, University of Agriculture, Faisalabad, Pakistan, during 2009-2010. The treatments included wheat (line sowing), canola (line sowing), wheat (broadcast method), one row of wheat + one row of canola (30 cm apart), two rows of wheat + two rows of canola (45 cm apart), four rows of wheat + four rows of canola (75 cm apart) and mixed cropping of wheat + canola (broadcast method). The results revealed that all intercropping treatments significantly affected weed density and dry weight... |
| Tipo: Journal article |
Palavras-chave: Intercropping; Brassica napus; Triticum aestivum; Weeds. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300019 |
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| Registros recuperados: 9.178 | |
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