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Now showing items 2499-2518 of 2799
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Nación y masculinidad en Tiempo de silencio de Luis Martín-Santos
(2012-05)Estudio que analiza al protagonista masculino de la novela Tiempo de silencio, de Luis Martín-Santos, Pedro, en relación a los modelos de varón que se han desarrollado en el imaginario español como parte de la fundación ... -
NAFTA and Beyond: Challenges in Free Trade.
(Centro de Investigaciones Comerciales e Iniciativas Académicas de la Facultad de Administración de Empresas. Forum Empresarial. Vol.9 Num.2, 2004-12)The North American Free Trade Agreement NAFTA) increasingly looks like a “one shot” deal with little of the ongoing deepening of economic relationship expected at the time of its negotiation and no provisions for ongoing ... -
Nature and properties of major soils of Lajas Valley
(2010-08-10)En este boletín se presentan datos sobre las propiedades morfológicas, químicas y físicas de 23 perfiles de suelos del Valle de Lajas. Se incluyen, además, datos sobre la mineralogía de algunos de dichos suelos. El estudio ... -
Nematodes of Puerto Rico: Actinolaimoidea new superfamily with a revision of its genera and species with addenda to Belondiroidea (Nemata, Adenophorea, Dorylaimida)
(2010-02-08)This work continues the production of group papers begun by the writer with the publication on nematodes of the superfamily Belondiroidea. It is based principally on specimens now in the permanent collection of the Puerto ... -
New Criteria for the Choice of Training Sample Size for Model Selection and Prediction: The Cubic Root Rule
(2012)The size of a training sample in Objective Bayesian Testing and Model Selection is a central problem in the theory and in the practice. We concentrate here in simulated training samples and in simple hypothesis. The striking ... -
New Ferrocene Chalcones Derivative's Polymers
Polymers represent the largest and versatile class of biomaterials being extensively applied in multiple biomedical applications. This versatility is attributed to the relative ease with which polymers can be designed and ... -
New Locality, Depth, and Size Records and Species Character Modifications of Some Caribbean Deep-Reef/Shallow Slope Fishesand a New Host and Locality Record for the Chimaera Cestodarian
(Caribbean Journal of Science, Vol. 40, No. 1, 88-119, 2004, 2004-04)New geographic localities are noted for chimaera cestodarian, Gyrocotyle rugosa, from the central Atlantic; it and Antillean snake eel, Ophichthus spinicauda; Caribbean lanternshark, Etmopterus hillianus; and dwarf cat ... -
New Records of Marine Fishes from the Puerto Rican Plateau
(Carribean Journal of Science, Vol. 40, No. 1, 70-87, 2004, 2004-04)Forty-six new records of marine fishes to the Puerto Rican Plateau are reported here with notes on their habitat and life history. The lack of previous reports of many of these species is due to three main reasons: poorly ... -
Nitrogen Dynamics in Small Urban Tropical Streams: Responses to Stream Geomorphology and Channel Complexity
Urban expansion has become a globally dominant process. Urban sprawl (excessive spatial growth or expansion around cities) as defined by Brueckner (2000), has resulted in a wide range of impacts on ecosystems. One of the ... -
Nivel de Actividad Física de los Estudiantes de Terapia Física en Puerto Rico
Resumen: La actividad física es importante para permanecer saludables y disminuir así los riesgos de ciertas enfermedades degenerativas y mortalidad prematura. Sin embargo, estudios previos han concluido que los estudiantes ... -
Nivel de vida y condiciones de la vivienda en las comunidades aisladas del centro Las Marías
(2010-05-04)La Corporación de Desarrollo Rural y la Estación Experimental Agrícola en su afán por conocer la realidad socio-económica en que vivían las familias de las comunidades aisladas en Puerto Rico, hicieron un estudio a tales ... -
Nociones, El Podcast: Mirando el Caribe desde las humanidades digitales
(Luis Méndez Márquez, 2021-06-07)En un pequeño salón en la Facultad de Humanidades del Recinto de Rio Piedras de la Universidad de Puerto Rico, las doctoras Mirerza González y Nadjah Rios comenzaron a visualizar cómo, desde sus trasfondos académicos, ... -
Nociones, El Podcast: Mirando el Caribe desde las humanidades digitales
(Editor: Méndez Márquez, Luis, 2021-06-07)En un pequeño salón en la Facultad de Humanidades del Recinto de Rio Piedras de la Universidad de Puerto Rico, las doctoras Mirerza González y Nadjah Rios comenzaron a visualizar cómo, desde sus trasfondos académicos, ... -
Nocturnal fish movement and trophic flow across habitat boundaries in a coral reef ecosystem (SW Puerto Rico)
(Caribbean Journal of Science, Vol. 45, No. 2-3, 282-303, 2009, 2009)Few studies have quantified the extent of nocturnal cross-habitat movements for fish, or the influence of habitat adjacencies on nutrient flows and trophodynamics. To investigate the patterns of nocturnal cross-boundary ... -
Nucleation, Growth, and Electrical Characterization of Al2O3 Thin Films Grown by Atomic Layer Deposition
Materials with higher dielectric constant than SiO2 (~ .4.0), called as high-k materials, are of great demand for CMOS transistors and DRAM capacitors. Aluminum oxide (Al2O3) has many interesting properties, such as high ... -
Nuevos edificios para las bibliotecas universitarias II / México: Universidad Nacional Autónoma de México; Dirección General de Bibliotecas, 2002. 160 p. ISBN 968-36-8868-3
(Universidad de Puerto Rico, 2005)El segundo volumen de Nuevos edificios para las bibliotecas universitarias describe las remodelaciones y ampliaciones realizadas a las bibliotecas de facultades, escuelas, institutos y centros de investigación de la ... -
Nutrient distribution across the insular shelf of La Parguera, Puerto Rico: assessment by algal tissue nitrogen
(Caribbean Journal of Science, Vol. 45, No. 2-3, 181-190, 2009, 2009)A survey was conducted to investigate possible presence of an inshore to shelf edge gradient in % nitrogen (%N) and stable nitrogen isotope ratio (δ 15 N; ‰ vs. air) in tissues of the rhodophyte Acanthophora spicifera and ... -
Nutrient Dynamics in the Laguna San Jose a Tropical Urban Lagoon in the San Juan Bay Estuary, Puerto Rico
Globally, anthropogenic nitrogen inputs to coastal ecosystems are causing eutrophication of estuaries and aquatic habitats degradation, thus affecting their biodiversity and trophic structure. Understanding the biogeochemistry ... -
Número de Cromosomas Haploides de Cinco Lepidopteros presentes en Puerto Rico
(Universidad de Puerto Rico en Utuado, 2010-06)Se contó el número de cromosomas haploides a Dismorphia spio, Aphrissa statira cubana, Eurema daira palmira, Phoebis sennae sennae y Chrysodeixis includens en Puerto Rico. Todos excepto D. spio, que tiene n=33, tienen n=31. ...