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Análisis de las distorsiones cognoscitivas de madres de niños con malformaciones congénitas
(Universidad Nacional de Colombia, 2001)
Se buscaron diferencias entre madres de niños con malformación congénita en el uso de esquemas distorsionados en el Procesamiento de Información (PI), referido a las causas, pronóstico y consecuencias del evento sobre la ...
Nutrient accumulation models in the banana (Musa AAA Simmonds cv Williams) plant under nitrogen doses
(Universidad Nacional de Colombia - Sede Palmira, 2017-07-01)
This research determined the effect of four nitrogen (N) doses on the nutritional behavior of (N), potassium (K), phosphorus (P), calcium (Ca) and magnesium (Mg), respectively, in banana Williams, during five plant development ...
Marco geológico y rasgos estructurales del batolito de Santa Marta, flanco noroccidental de la sierra nevada de Santa Marta
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Geociencias, 2015-01-01)
Por su organización interna y su contenido litológico la Sierra Nevada de Santa Marta (SNSM) muestra analogías con el margen del Bloque Nor-Andino. Entre los rasgos más relevantes vale destacar la continuidad de una provincia ...
A peptide derived from alpha-fetoproteln inhibits the proliferation induced by estradiol in mammary tumor cells in culture
(2008)
This study was aimed to obtain additional information on the activity of a cyclized 9-amino acid peptide (cP) containing the active site of alpha fetoprotein, which inhibits the estrogen-stimulated proliferation of tumor ...
Caracterización citogenética de la tortuga sabanera podocnemis vogli (reptilia: testudinata: podocnemididae)
(Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología, 2005)
Se estudiaron siete ejemplares de Podocnemis vogli, tres fueron colectados en las localidades de Puerto López y Puerto Gaitán, Meta, Colombia; cuatro carecen de datos de localidad. Todos los ejemplares presentaron un ...
Surface vitrification caused by natural fires in Late Pleistocene wetlands of the Atacama Desert
(Elsevier, 2017-07-01)
We describe extended occurrences of unusual silicate glass surface layers from the Atacama Desert (Chile). These glasses, found near the town of Pica at four localities separated by up to 70 km, are neither fulgurites, nor ...
Local urban governments financing a comparison between countries
(Universidad de Chile. Departamento de Economía, 1996-08)
This paper is intended to analyze, in a comparative pespective, the finacing mechanisms of urban local governments in two groups of countries. The frist group refers to a sample of OECD countries. They are rather ...
On the regulation of marine industrial fisheries: The case of Chile
(Universidad de Chile. Facultad de Economía y Negocios, 1994-06)
For more than 50 years Chilean marine industrial fisheries (MIF) were ruled by a criterion of “historical rights” in the issuance of fishing permits. This form of regulation was basically aimed at controlling access to the ...
NAFTA’s trade effects: new evidence with a gravity model
(Universidad de Chile. Facultad de Economía y Negocios, 2006-06)
This paper estimates econometrically the impact of NAFTA on US-Mexico and
US-third countries (groups of countries) trade flows. Using a traditional gravity-
equation framework, we try to see to what extent the bilateral ...
A new proof of the Unique Factorization of Z 1 + -d 2 for d = 3, 7, 11, 19, 43, 67, 163
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Matemáticas - Sociedad Colombiana de Matemáticas, 2016-07-01)
In this paper, we give an elementary proof of the fact that the rings are unique factorization domains for the values d = 3, 7, 11, 19, 43, 67, 163. While the result in itself is well known, our proof is new and completely ...