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Tópicos Sugeridos dentro de su búsqueda.
1
artículo
Publicado 2012
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Polylepis woodlands are a vital resource for preserving biodiversity and hydrological functions, which will be altered by climate change and challenge the sustainability of local human communities. However, these highaltitude Andean ecosystems are becoming increasingly vulnerable due to anthropogenic pressure including fragmentation, deforestation and the increase in livestock. Predicting the distribution of native woodlands has become increasingly important to counteract the negative effects of climate change through reforestation and conservation. The objective of this study was to develop and analyze the distribution models of two species that form extensive woodlands along the Andes, namely Polylepis sericea and P. weberbaueri. This study utilized the program Maxent, climate and remotely sensed environmental layers at 1 km resolution. The predicted distribution model for P. sericea i...
2
artículo
Publicado 2012
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Polylepis woodlands are a vital resource for preserving biodiversity and hydrological functions, which will be altered by climate change and challenge the sustainability of local human communities. However, these highaltitude Andean ecosystems are becoming increasingly vulnerable due to anthropogenic pressure including fragmentation, deforestation and the increase in livestock. Predicting the distribution of native woodlands has become increasingly important to counteract the negative effects of climate change through reforestation and conservation. The objective of this study was to develop and analyze the distribution models of two species that form extensive woodlands along the Andes, namely Polylepis sericea and P. weberbaueri. This study utilized the program Maxent, climate and remotely sensed environmental layers at 1 km resolution. The predicted distribution model for P. sericea i...
3
artículo
Publicado 2025
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High-Andean Creole cattle represent a genetic resource with significant adaptive value in high-altitude ecosystems. In this study, 151 Creole cows from the provinces of Canas and Quispicanchis (Cusco, Peru) were evaluated to characterize their morphometry, calculate zoometric indices, and establish functional biotypes. Ten morphometric parameters were measured, and eight structural indices were calculated. Four differentiated biotypes were identified through the multivariate analysis and hierarchical clustering of quantitative variables (BI, BII, BIII, and BIV). Morphological differences were statistically significant (p < 0.05) and associated with different productive orientations. Biotype I showed greater thoracic development and a compact structure, which is compatible with intermediate beefaptitude; Biotype II exhibited more elongated proportions and a lower weight, indicating a dair...
4
artículo
Publicado 2011
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This study is a geochemical investigation of the Andean and Foreland basins of the Amazon River at high spatial and time resolution, carried out within the framework of the HYBAM research program (Hydro-geodynamics of the Amazon Basin). Monthly sampling was carried out at 27 gauging stations located in the upper tributaries of the Amazon Basin (from north to south: the Napo, Marañon, Ucayali, Madre de Dios-Beni and Mamore Rivers). The aim of this paper is to estimate the present-day chemical weathering rate (CWR), as well as the flux of CO2 consumption from total and silicate weathering in the Andes and Foreland Amazon basins, and to discuss their distribution as a function of geomorphic and structural parameters. Based on the forward method, the Napo and other Ecuadorian basins present high silicate weathering rates in comparison with the other basins. We confirm that the Marañon and ...
5
artículo
Publicado 2018
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In the following study, allometric equations have been generated to estimate the aerial forest biomass of two species: Polylepis incana and Polylepis sericea, from an Andean natural forest located in the village of Poccrac, in the heights of Ticapampa, Ancash.The allometric equations for both species have been designed from 15 data, relating the biomass (M) as a dependent variable with the diameter of breast height as an independent variable (DAP). The DAP measurement of the selected Polylepis trees are within the range of 5 cm to 20 cm. In the regression analysis performed with the statistical program SPSS V 22.0, a correlation coefficient of r2 = 0.929 is found for the Polylepis incana species and a r2 = 0.94 for the Polylepis sericea species, which indicates a high relation between the biomass variables and DAP, showing good goodness of fit for the parameters that constitute the allom...
6
artículo
Publicado 2018
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In the following study, allometric equations have been generated to estimate the aerial forest biomass of two species: Polylepis incana and Polylepis sericea, from an Andean natural forest located in the village of Poccrac, in the heights of Ticapampa, Ancash.The allometric equations for both species have been designed from 15 data, relating the biomass (M) as a dependent variable with the diameter of breast height as an independent variable (DAP). The DAP measurement of the selected Polylepis trees are within the range of 5 cm to 20 cm. In the regression analysis performed with the statistical program SPSS V 22.0, a correlation coefficient of r2 = 0.929 is found for the Polylepis incana species and a r2 = 0.94 for the Polylepis sericea species, which indicates a high relation between the biomass variables and DAP, showing good goodness of fit for the parameters that constitute the allom...
7
artículo
Publicado 2018
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In the following study, allometric equations have been generated to estimate the aerial forest biomass of two species: Polylepis incana and Polylepis sericea, from an Andean natural forest located in the village of Poccrac, in the heights of Ticapampa, Ancash.The allometric equations for both species have been designed from 15 data, relating the biomass (M) as a dependent variable with the diameter of breast height as an independent variable (DAP). The DAP measurement of the selected Polylepis trees are within the range of 5 cm to 20 cm. In the regression analysis performed with the statistical program SPSS V 22.0, a correlation coefficient of r2 = 0.929 is found for the Polylepis incana species and a r2 = 0.94 for the Polylepis sericea species, which indicates a high relation between the biomass variables and DAP, showing good goodness of fit for the parameters that constitute the allom...
8
artículo
Publicado 2025
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El estudio evaluó la estructura poblacional y los parámetros productivos y reproductivos de 1149 bovinos Brown Swiss criados en 101 rebaños en tres sectores (K´uchuhuasi, Cullahuata y Alccavictoria) del distrito de Velille, Cusco, situados en altitudes que varían entre 3650 y 3900 msnm. Se realizaron encuestas y se analizaron registros existentes de estas poblaciones correspondientes a los años 2021, 2022 y 2023. Para el análisis de los datos se realizó un análisis de varianza y se empleó la función LSMENANS de la librería emmeans usando el lenguaje de programación R v. 4.0 y RStudio. No se encontraron diferencias significativas (p>0.05) entre sectores en la mayoría de las categorías de la estructura poblacional. El porcentaje de vacas en producción estuvo entre 33.98 ± 11.53% y 36.6 ± 12.88%. Los parámetros productivos y reproductivos evaluados no difirieron entre ...
9
artículo
Publicado 2018
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En el siguiente estudio se han generado ecuaciones alométricas para estimar la biomasa forestal aérea de dos especies: Polylepis incana y Polylepis sericea, de un bosque natural andino ubicado en el caserío de Poccrac, en las alturas de Ticapampa, Ancash.Las ecuaciones alométricas para ambas especies, han sido diseñadas a partir de 15 datos, relacionando la biomasa (M) como variable dependiente con el diámetro de altura de pecho como variable independiente (DAP).La medida del DAP de los árboles de Polylepis seleccionados están dentro del rango que va desde 5 cm a 20cm.En el análisis de regresión realizado con el programa estadístico SPSS V 22.0 ,se encuentra para la especie Polylepis incana un coeficiente de correlación de r2=0.929 y para la especie Polylepis sericea un r2=0.94, lo cual indica un alta relación entre las variables biomasa y DAP, mostrando buena bondad de ajus...
10
artículo
Publicado 2017
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We assessed the texture profile (TPA), Aw and PH of hot-dog elaborated on the basis of llama meat; We worked with 16 formulations that included different levels of inclusion of egg albumin (AH), Tara Gum (GT) and functional soy Concentrate (CSF). By TPA, cohesiveness, mastication, hardness, gumminess and elasticity were assessed. To evaluate the individual and synergistic effect of the components, the mixture design method was used. It was found that the addition of CSF influenced significantly in hardness (R2 = 0.92) and chewability (r2 = 0.94), while cohesiveness was positively influenced by the greater proportion of GT and AH (r2 = 0.97). On the other hand, the elasticity showed greater magnitude when the proportion of CSF and AH (R2 = 0.90) increased in the mixture. The microbiological barriers of ph and AW were also evaluated, it was observed that the Aw was reduced mainly by CSF an...
11
artículo
Publicado 2017
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We assessed the texture profile (TPA), Aw and PH of hot-dog elaborated on the basis of llama meat; We worked with 16 formulations that included different levels of inclusion of egg albumin (AH), Tara Gum (GT) and functional soy Concentrate (CSF). By TPA, cohesiveness, mastication, hardness, gumminess and elasticity were assessed. To evaluate the individual and synergistic effect of the components, the mixture design method was used. It was found that the addition of CSF influenced significantly in hardness (R2 = 0.92) and chewability (r2 = 0.94), while cohesiveness was positively influenced by the greater proportion of GT and AH (r2 = 0.97). On the other hand, the elasticity showed greater magnitude when the proportion of CSF and AH (R2 = 0.90) increased in the mixture. The microbiological barriers of ph and AW were also evaluated, it was observed that the Aw was reduced mainly by CSF an...
12
artículo
Publicado 2022
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Post-traumatic stress disorder (PTSD) is a psychiatric condition that occurs in response to traumatic events and can significantly affect the patient’s functional capacities. The Peruvian highlands is a region whose population has been exposed to highly stressful events; however, there is limited information on the factors associated with PTSD in the region. Objective: To determine sociodemographic and clinical factors (comorbidity and functionality) associated with PTSD. Material and methods: A secondary study was conducted using the adult database of the Epidemiological Study of Mental Health in the Peruvian Highlands - 2017. Instruments: Mini International Neuropsychiatric Interview (MINI) Spanish version ICD-10, Mental Health Questionnaire of Colombia, Disability Scale, and an intake form with demographic data and poverty indicators. Results: Significant associations were found bet...
13
artículo
Publicado 2017
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We assessed the texture profile (TPA), Aw and PH of hot-dog elaborated on the basis of llama meat; We worked with 16 formulations that included different levels of inclusion of egg albumin (AH), Tara Gum (GT) and functional soy Concentrate (CSF). By TPA, cohesiveness, mastication, hardness, gumminess and elasticity were assessed. To evaluate the individual and synergistic effect of the components, the mixture design method was used. It was found that the addition of CSF influenced significantly in hardness (R2 = 0.92) and chewability (r2 = 0.94), while cohesiveness was positively influenced by the greater proportion of GT and AH (r2 = 0.97). On the other hand, the elasticity showed greater magnitude when the proportion of CSF and AH (R2 = 0.90) increased in the mixture. The microbiological barriers of ph and AW were also evaluated, it was observed that the Aw was reduced mainly by CSF an...
14
artículo
Publicado 2011
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Yacon (Smallanthus sonchifolius) is part of our food and medicinal biodiversity and both roots and leaves are used due to their antioxidant, hypoglycemic and antibacterial properties. Consequently its use as functional food and/or nutraceutical is promising. Objectives: To determine the antioxidant capacity of 10 yacon accessions native from Cajamarca. Design: Descriptive, cross sectional and prospective study. Setting: Biochemistry and Nutrition Research Center, Faculty of Medicine, Universidad Nacional Mayor de San Marcos (UNMSM), and Universidad Nacional de Cajamarca (UNC), Peru. Biological material: Yacon leaves and roots. Interventions: Yacon leaves and roots of plants cultivated in the Experimental Field of the Roots and Andean Tubers Program, Cajamarca's city (2 536 meters above sea level), were used, from the collection that supports the UNC Faculty of Agrarian Sciences. Origin o...
15
artículo
Publicado 2023
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This article presents the analysis of indicators of inclusive innovation, on rural entrepreneurs in the Andean highlands of the Tacna region. The objective was to describe perceptions and conditions of inclusive innovation of rural entrepreneurs. There were limitations such as the dispersion of the population in the annexes of the high Andean areas, the users were not in one place, but in the mornings, they stopped in the field and in the afternoons at their homes, which has meant that the time of data collection is 6 months. The sample consisted of 253 people, determined by linguistic saturation, the sample consisted of profiles of people by function or sector of activity supported by the atlas ti program. In-depth semi-structured interviews were carried out with each of the people, these were carried out at home or at the workplace. Permission was requested to record the conversation i...
16
artículo
Publicado 2021
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In the formulation of dried sweet sausage, pork meat and fat are traditionally used, which can be replaced by healthy products such as pecans (Carya illinoinensis) and kañiwa (Chenopodium pallidicaule); as well as llama meat (Lama glama) that is low in fat and cholesterol. For this reason, the present investigation aimed to optimize a formulation of dried sweet sausage considering three main components: llama meat, kañiwa flour and pecans. The D-Optimal mixture design method of the Design-Expert®7 program was applied, obtaining fourteen formulations. For each formulation, color, water activity and texture profile were evaluated. Only the cohesiveness fit a meaningful mathematical model. Subsequently, the optimization of the variable response was carried out, using the desirability function of the "objective value" type, so that the product could resemble the target (sausage made with ...
17
artículo
Publicado 2021
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In the formulation of dried sweet sausage, pork meat and fat are traditionally used, which can be replaced by healthy products such as pecans (Carya illinoinensis) and kañiwa (Chenopodium pallidicaule); as well as llama meat (Lama glama) that is low in fat and cholesterol. For this reason, the present investigation aimed to optimize a formulation of dried sweet sausage considering three main components: llama meat, kañiwa flour and pecans. The D-Optimal mixture design method of the Design-Expert®7 program was applied, obtaining fourteen formulations. For each formulation, color, water activity and texture profile were evaluated. Only the cohesiveness fit a meaningful mathematical model. Subsequently, the optimization of the variable response was carried out, using the desirability function of the "objective value" type, so that the product could resemble the target (sausage made with ...
18
artículo
Publicado 2021
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In the formulation of dried sweet sausage, pork meat and fat are traditionally used, which can be replaced by healthy products such as pecans (Carya illinoinensis) and kañiwa (Chenopodium pallidicaule); as well as llama meat (Lama glama) that is low in fat and cholesterol. For this reason, the present investigation aimed to optimize a formulation of dried sweet sausage considering three main components: llama meat, kañiwa flour and pecans. The D-Optimal mixture design method of the Design-Expert®7 program was applied, obtaining fourteen formulations. For each formulation, color, water activity and texture profile were evaluated. Only the cohesiveness fit a meaningful mathematical model. Subsequently, the optimization of the variable response was carried out, using the desirability function of the "objective value" type, so that the product could resemble the target (sausage made with ...
