Artículos de Investigación: Recent submissions
Now showing items 461-480 of 1294
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Resultados preliminares de valores hematológicos en una población silvestre de Spheniscus humboldti en el sur de Perú
(Universidad Nacional Mayor de San Marcos, 2018)The objective of this report was to present data on the hematological profile of the Humboldt penguin (Spheniscus humboldti) in Punta Coles, Peru. Values of hematocrit, white blood cell count and leukocyte formula were ... -
Valores hematológicos y bioquímicos del axolotl (Ambystoma mexicanum) mantenidos en cautiverio en Lima, Perú
(Universidad Nacional Mayor de San Marcos, 2021)The axolotl is a caudate amphibian used in numerous biomedical studies for its regenerative capacity. It is currently in the category of critical danger of extinction because of aquatic pollution, indiscriminate hunting ... -
Efecto de la criopreservación en la integridad acrosomal de espermatozoides viables de alpaca evaluada mediante citometría de flujo
(Universidad Nacional Mayor de San Marcos, 2020)The aim of this study was to determine the effect of cryopreservation on acrosomal integrity in viable alpaca sperm. Samples from 46 alpaca testicles that had motility >30% and sperm concentration >50x106 sperm/ml were ... -
Determinación de algunas características biológicas de aislados primarios de células del corion de placenta de alpaca (Vicugna pacos)
(Universidad Nacional Mayor de San Marcos, 2021)The aim of this work was to determine the morphology and growth kinetics of an isolate of primary cells from passages 1-3 of the alpaca placental chorion (aPChC) as stem cell precursors. Five alpaca placentas were processed ... -
Serotipificación de Escherichia coli aislados a partir de superficies vivas e inertes en un mercado de carne de pollo
(Universidad Nacional Mayor de San Marcos, 2020)The aim of this study was to identify and serotype isolate strains from vendors' hands, chopping boards and vending tables of 50 chicken meat stalls in a market in San Juan de Miraflores district, Lima, Peru. The sampling ... -
Resistencia Antibiótica de Enterobacterias Aisladas de Monos (Ateles, Callicebus y Lagothrix) en Semicautiverio en un Centro de Rescate, Perú
(Universidad Nacional Mayor de San Marcos, 2017)Several genera and species of nonhuman primates can be found in Peru. Among them, Ateles belzebuth, Ateles chamek, Callicebus oenanthe, Lagothrix cana and Lagothrix lagotricha. These species according to the IUCN Red List ... -
Antibiotic resistance of Salmonella enterica strains isolated from guinea pig carcasses in a market in Lima, 2021
(Universidad Nacional Mayor de San Marcos, 2023)The aim of this study was to identify the antibiotic resistance of Salmonella enterica isolates from 384 samples of guinea pig carcasses from a market in Lima, Peru. The samples were inoculated in enrichment broth and ... -
Metales pesados e imposex en Thaisella chocolata (Gasteropoda: Muricidae) en Matarani, Arequipa, Perú
(Universidad Nacional Mayor de San Marcos, 2022)Marine ecosystems have been affected by contamination from heavy metals and antifouling organotin paints, where the latter generate the imposex phenomenon in marine gastropods. The presence of heavy metals and imposex in ... -
Microplásticos en Emerita analoga (Crustacea: Hippidae) y en sedimentos en ocho playas arenosas de Lima, Perú
(Universidad Nacional Mayor de San Marcos, 2023)Microplastics (MP) have been recorded in marine ecosystems around the world; however, little is known about the temporal and spatial variation of PM on marine beaches in Peru. In this work, PM were evaluated in Emerita ... -
Freedom, History and the Subject of the Unconscious. Theoretical Contributions to the Ideological Study
(Universidad de Valparaíso, 2023)In this article we address the notions of freedom, history and subjectivity, in order make an original contribution to the studies of ideology. Our methodology will consist in crossing Freudian-Lacanian psychoanalysis and ... -
La extrema derecha como problema psicoanalítico: acerca del “liberfascismo” y sus modalidades de goce
(Universidad de Valparaíso, 2023)The aim of this article is to problematize, from a sociopolitical and psychoanalytic point of view, the current rise of the new rights, especially in Latin America. Although this extremist renaissance is loosely and ... -
Hepatotoxicidad por tamsulosina / dutasterida: reporte de un caso probable
(Sociedad de Gastroenterología del Perú, 2023)Tamsulosin and dutasteride are drugs widely used to treat benign prostatic hypertrophy. having a good safety profile. There are few reports of liver injury associated with the use of tamsulosin; however, there are no reports ... -
Aquatic macroinvertebrates in streams associated with high andean wetlands of ayacucho Peru
(Universidad de Costa Rica, 2020)Streams associated with high Andean wetlands are found in environments where condi-tions are extreme, highly variable temperature, low atmospheric pressure, intense solar radiation. The macro-invertebrate assemblages have ... -
Impacto del COVID-19 en pequeñas y medianas empresas del Perú
(Universidad del Zulia, 2021)As a result of the changes generated by the COVID 19 pandemic, business organizations have faced great challenges where uncertainty, chaos and the global markets crisis have led to organizational rethinking. In this context, ... -
Distribución espacio-temporal de aves acuáticas de la familia Laridae en un humedal costero sudamericano
(Universidad de Costa Rica, 2023)Introduction: The coastal wetland Poza de La Arenilla (HCPA), located in Callao (Peru), is an important resting and roosting habitat for aquatic birds, including the family Laridae. However, the wetland is suffering critical ... -
Aerial behavior of humpback whales Megaptera novaeangliae at the southern limit of the southeast Pacific breeding area
(Universidad de Valparaíso, 2013)We evaluated the set of aerial displays shown by humpback whales Megaptera novaeangliae in the northern coast of Peru, a region that is considered the southern limit of the breeding area of the stock G in the Southeast ... -
Effect of fires on vegetation cover, carbon storage and plant biomass in a coastal wetland
(Universidad de Costa Rica, 2022)Introduction: Wetlands are among the most productive ecosystems, but currently are being degraded or eliminated at accelerated rates by multiple anthropic activities. In the central coast of Peru, wetlands suffer recurring ... -
La pesquería con arpón de peces picudos (Xiphiidae e Istiophoridae) en El Ñuro, Perú: Bases de una pesquería olvidada
(Universidad de Valparaíso, 2021)Harpoon fishing is an ancestral method of high selectivity, displaced in recent years by more mechanized gears in order to maximize catches. However, in some parts of the world this practice is still used to catch billfishes. ... -
Batoid fishery in Peru (1950-2015): Magnitude, management and data needs
(Universidad de Valparaíso, 2022)Historical landings from the Food and Agriculture Organization (1950–2015) were used to estimate the contribution of the Peruvian batoid fishery to the eastern Pacific Ocean, and species-specific landings from Instituto ... -
Dieta del tiburón diamante Isurus oxyrinchus en el norte del Perú: Estudio preliminar
(Universidad de Valparaíso, 2022)The shortfin mako shark (Isurus oxyrinchus) is considered one of the most important top predators in pelagic marine food webs. The diet of the shortfin mako shark was studied in northern Peru through the analysis of 25 ...
