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para altitudes » large altitudes (Expander búsqueda), a altitudes (Expander búsqueda), las altitudes (Expander búsqueda)
1
artículo
Publicado 2015
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A study has been carried out on the possibility that chronic hypoxia, to which the subject who are born and live at great altitudes are submitted, could produce high values of fetal hemoglobin. Normal new borns and normal adult subjects from Lima (150 meters over sea level), Oroya (3,726 mts.), Morocoha (4,540 mt.) and Ticlio (4,826 mts.), were studied. To measure the amount of fetal hemoglobin two methods were employed: "proportion of alkaline - denaturation" and the "1 minute-residue". At great altitdes the amount of Hb F fall between the normal range at sea level. It was established that there is no difference n the "proportion of alkaline-denaturation" of the Hb, between the subjects (newborns and adults) living at sea level and those living at great altitutdes, or of the few patients with chronic "soroche". It is postulated that the hypoxia of great altitudes does not stimulate the ...
2
artículo
Publicado 2015
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A study has been carried out on the possibility that chronic hypoxia, to which the subject who are born and live at great altitudes are submitted, could produce high values of fetal hemoglobin. Normal new borns and normal adult subjects from Lima (150 meters over sea level), Oroya (3,726 mts.), Morocoha (4,540 mt.) and Ticlio (4,826 mts.), were studied. To measure the amount of fetal hemoglobin two methods were employed: "proportion of alkaline - denaturation" and the "1 minute-residue". At great altitdes the amount of Hb F fall between the normal range at sea level. It was established that there is no difference n the "proportion of alkaline-denaturation" of the Hb, between the subjects (newborns and adults) living at sea level and those living at great altitutdes, or of the few patients with chronic "soroche". It is postulated that the hypoxia of great altitudes does not stimulate the ...
3
artículo
Introduction: Birth is a mandatory environmental change for the fetus when turning into a newborn. The adjustment processes that occcur in the minutes following childbirth are crucially important for the babys survival in the extrauterine environment. High-altitude environmental conditions, particularly hypobaric hypoxia, make this adjustment period different from what occurs in babies born in a normoxic envirronment. Objectives: To describe the characteristics of the adjustment period for high-altitude newborns. Also, we measured both cardiac and respiratory rates during the adjustment period in high-altitude newborns. Materials and methods: This is a prospective, longitudinal and analytical study, where 81 female and male newborns selected according to inclusion and exclusion criteria were assessed. The study was performed in EsSALUD Hospital in Juliaca, a city located...
4
artículo
Introduction: Birth is a mandatory environmental change for the fetus when turning into a newborn. The adjustment processes that occcur in the minutes following childbirth are crucially important for the babys survival in the extrauterine environment. High-altitude environmental conditions, particularly hypobaric hypoxia, make this adjustment period different from what occurs in babies born in a normoxic envirronment. Objectives: To describe the characteristics of the adjustment period for high-altitude newborns. Also, we measured both cardiac and respiratory rates during the adjustment period in high-altitude newborns. Materials and methods: This is a prospective, longitudinal and analytical study, where 81 female and male newborns selected according to inclusion and exclusion criteria were assessed. The study was performed in EsSALUD Hospital in Juliaca, a city located...
5
artículo
Publicado 2020
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Objective: To determine the predictive value of the dead space calculation through the dead space/tidal volume fraction at weaning from invasive mechanical ventilation in critically ill patients at high altitude. Materials and methods: An epidemiological, observational, analytical and prospective study carried out in the Adult Intensive Care Unit of the Hospital del Norte in the city of El Alto, Bolivia (4,090 m a.s.l.; barometric pressure: 453 mm Hg) from November 01, 2016 to March 31, 2017. High-altitude residents under invasive mechanical ventilation were studied. The inclusion criteria were: a) Altitude residents hospitalized in the Invasive Mechanical Ventilation Therapy Intensive Care Unit. b) Patients with evidence of resolution of the cause that prompted their connection to the invasive mechanical ventilator. c) Patients with positive weaning criteria and rates. d) Positive spont...
6
artículo
Publicado 2020
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The problem of attention deficit and the level of reading comprehension in children is a problem that teachers must pay attention to; since it is present in the personal, social and community areas and cognitive, emotional and interactive behaviors of children. Therefore, the objective of the study was to know the attention deficit and the reading comprehension of an Andean text in children who are at 3800 meters above sea level when they study it in conditions of low temperatures. In the study, it was observed that 13.8% of children have ADHD; however, 10.3% of this population is at the beginning of the reading comprehension process, this being significant. ADHD and meager reading comprehension is a real problem that teachers must know and face in order to apply appropriate strategies and techniques, for the development of children it is essential the importance that they must give to t...
7
artículo
Publicado 2023
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Antecedentes: La exposición a grandes altitudes desencadena una serie de cambios fisiológicos que mantienen la homeostasis. Aunque los procesos de aclimatación a largo plazo (días o años) están bien estudiados, se sabe menos sobre los cambios fisiológicos que se producen tras un ascenso rápido. Aprovechamos la geografía del Perú para medir los primeros cambios fisiológicos que se producen tras un rápido transporte desde un entorno de baja a una gran altitud entre los habitantes de las tierras bajas. Métodos: Se midieron los niveles de glucosa en sangre, insulina, péptido C y cortisol salival en peruanos sanos de las tierras bajas antes y después de la ingesta de glucosa a 40 m y al llegar a 3470 m. También se monitorizaron la frecuencia cardíaca en reposo, la saturación de oxígeno en sangre y la presión arterial. Resultados: A gran altitud, encontramos un aumento sign...
8
artículo
Publicado 2021
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The soil is considered the largest carbon reservoir in nature after the oceans, its content has been studied mostly in forest ecosystems, leaving aside other important ecosystems such as high Andean natural pastures, whose plant cover is made up of species diversity, which occupy large areas. The objective of the research was to determine the influence of the altitudinal variability on the Soil Organic Carbon (SOC) storage capacity of the Stipa, Festuca and Calamagrostis species, as well as its relationship with the characteristics of the soils. 73 soil samples were extracted at 0.2 m depth, between altitudes of 4000 to 4410 m.a.s.l.; To determine the COS, the wet oxidation methodology was used. The results show that there is no significant difference in the accumulation of SOC of the species studied, its general mean is 364.33 ± 48.80 t ha-1. The correlation coefficients between the am...
9
artículo
Publicado 2021
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The soil is considered the largest carbon reservoir in nature after the oceans, its content has been studied mostly in forest ecosystems, leaving aside other important ecosystems such as high Andean natural pastures, whose plant cover is made up of species diversity, which occupy large areas. The objective of the research was to determine the influence of the altitudinal variability on the Soil Organic Carbon (SOC) storage capacity of the Stipa, Festuca and Calamagrostis species, as well as its relationship with the characteristics of the soils. 73 soil samples were extracted at 0.2 m depth, between altitudes of 4000 to 4410 m.a.s.l.; To determine the COS, the wet oxidation methodology was used. The results show that there is no significant difference in the accumulation of SOC of the species studied, its general mean is 364.33 ± 48.80 t ha-1. The correlation coefficients between the am...
10
artículo
Publicado 2020
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Introduction. Arterial blood gas and electrolyte values undergo changes in high altitude, which can alter the diagnostic and prognostic evaluation of certain diseases. Objective. To determine the values of arterial gases and electrolytes in healthy adults and older adults in high altitude resident. Methods. Prospective, descriptive study, carried out with a population of healthy adults and elderly volunteers, at Ramiro Prialé Prialé National Hospital in EsSalud - Huancayo, a city located 3250 meters above sea level, whose barometric pressure is 515 mmHg. Arterial blood samples were taken from subjects and processed with Roche Omni C arterial gas analyzer. Continuous variables were analyzed with ANOVA and statistical analysis performed with Excel and SPSS. Results. 105 people from 30 to 87 years old were evaluated. The average of the analyzed variables...
11
artículo
Publicado 2020
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Estudio epidemiológico, observacional, analítico y prospectivo realizado en la Unidad de Terapia Intensiva Adultos del Hospital del Norte de la ciudad de El Alto, Bolivia (4090 m s. n. m. y presión barométrica de 453 mmHg) del 01 de noviembre de 2016 al 31 de marzo de 2017. Se estudiaron a los residentes de la gran altitud en ventilación mecánica invasiva. Los criterios de inclusión fueron los siguientes: a) residentes de la altitud hospitalizados en la Unidad de Terapia Intensiva en ventilación mecánica invasiva, b) pacientes con evidencia de resolución de la causa que motivó su conexión al ventilador mecánico invasivo, c) paciente con criterios e índices de destete positivos, d) prueba de respiración espontanea positivo. Las variables estudiadas fueron el espacio muerto a través de la fracción Vd/Vt y su relación con el éxito o fracaso del proceso de destete de venti...
12
artículo
Publicado 2024
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Exposure to high-altitude hypobaric hypoxia provides a useful pathophysiological model for studying the brain's response to reduced oxygen availability. In this study, gene expression was analyzed in different brain regions (hypothalamus, striatum, hippocampus, and cerebral cortex) of rats exposed to 3153 m a.s.l., focusing on markers of inflammation and cellular adaptation: NLRP3, IL-1β, and HIF-1α. For the samples obtained from each brain region, three consecutive procedures were performed following the manufacturer's instructions: total RNA extraction, reverse transcription to complementary DNA (cDNA), and quantification by real-time PCR (qPCR). Findings showed limited induction of NLRP3, whereas IL-1β and HIF-1α were markedly overexpressed. These results suggest that cerebral hypoxia triggers a sustained inflammatory response during the 28-day exposure period, accompanied by HI...
13
informe técnico
Publicado 2016
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La Energía Eléctrica es una de las fuentes principales que ayudan al desarrollo del país e impulsa el progreso, desde las industrias, el comercio, educación, salud, entre otras actividades, con el que se logra satisfacer un conjunto de necesidades importantes para los habitantes de una ciudad. El presente documento trata el estudio de los Procesos Constructivos de una subestación Eléctrica de 220kV en una zona de gran Altitud. El Informe inicia señalando las gestiones necesarias que se dan para iniciar un proyecto de Transmisión de Energía por instituciones encargadas en de detectar y elaborar un diagnóstico de la necesidad que tiene el país de generar energía eléctrica, de acuerdo a la demanda proyectada. El contenido principal del Informe son los procesos constructivos necesarios que se dan en la construcción de una subestación eléctrica en una zona de gran Altitud. Mue...
14
informe técnico
Publicado 2017
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El objetivo del presente informe “ANALISIS COMPARATIVO DE COSTOS EN PLANTA DE PROCESOS DE PROYECTOS MINEROS EN ZONAS DE GRAN ALTITUD”, es analizar ratios de costos y metrados de las zonas operativas de la planta de procesos de 2 proyectos mineros de gran envergadura. Con los resultados obtenidos de los análisis, se ha podido elaborar un tercer proyecto a nivel de ingeniería de factibilidad a base de ratios e información preliminar. Se hace referencia al término “Zona de gran altitud” en el título del informe a proyectos que se encuentran a una altitud superior de los 4000 m.s.n.m. Por motivos de confidencialidad, en el presente informe no se dará detalles de las empresas que participaron en la elaboración de la ingeniería (Se le mencionara a la empresa como “Empresa consultora ABC”), ni en el proceso constructivo de la planta de procesos. El informe presenta el presup...
15
artículo
Publicado 1989
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It reviews the publications related with sexual maturity process and factors that, in some way, affect it. It studies a population of 1570 women from Lima and 189 from Arequipa, of different socioeconomic level, with ages from 12 to 48 years. The results allow the assertion that the socioeconomic level -that it is expressed in the nutritional state- is a fundamental factor in the sexual maturity process and the reproductive function. The secular trend to an earlier age of menarche has not yet arrived to the point expected due to the genetic factor. The results are compared with those of a north european women's population. It shows that moderate physical activity improves the reproductive function and that, to the present time, the age of menarche is earlier - or at least not lates- in Arequipa then in Lima City. These results put on second place the importance of the geographic altitude...
16
artículo
Publicado 2020
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The objective of this work has been to analyze and simulate the interactions of atmospheric and hydrological processes using the WRF Model (Weather Research and Forecasting) in Peru for the year 2014. SENAMHI records precipitation data through a meteorological network found distributed in almost all the Peruvian territory. Due to precipitation has a high spatial variability and to the scarcity of rain gauges, the use of TRMM images was used to estimate precipitation and the WRF atmospheric model to analyze the interactions of atmospheric and hydrological processes during different periods and considering the cumulus parameterizations (Kain-Fritsch scheme, KF) and microphysics (Thompson scheme). Thirty- six images of accumulated monthly precipitation over Peru were processed using the simulation of the atmospheric model WRF (two cases) and the TRMM. Twelve meteorological stations distribu...
17
artículo
Publicado 2014
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Objectives. To assess the implementation of the Universal “Chispitas®” Multimicronutrient Supplement Program in Apurimac by determining the quantity and quality of sachets consumed and their connection with anemia, in 6 – 35-month-old children. Materials and methods. A crosscut study was conducted by using a multistage sample in 2010. Anemia was considered to be related to altitude-adjusted hemoglobin values below 110 g/L. The consumption of multimicronutrients was classified as follows: less than 30; 30 to 59, and 60 or more sachets. The quality of consumption was considered to be adequate when the mother indicated that the child ate all his food with the supplement. The rationale for prevalence (RPa) adjusted by Poisson regression was calculated. Results. 714 participants were included, 25.3% of which lived in poor houses and 59.2% in extreme poverty; 52.6% lived at over 3000 m ...
18
artículo
Publicado 2016
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En base a los resultados de análisis de isótopos estables δO-18 y δH-2 en muestras de agua de manantiales, debido a la similitud con la composición isotópica de las precipitaciones en altura, conforme al carácter conservativo de los isótopos δO-18 y δH-2 y en referencia a la altitud de las muestras se ha obtenido los valores isotópicos del “efecto de altitud” y la identificación de la zona de recarga para el sector en estudio. Las muestras han sido recolectadas en la parte alta de la cuenca del río Cañete (3490-4300 msnm) alcanzando una diferencia de altitud entre muestras de 800 m. Los valores isotópicos están afectados por fraccionamiento y desviaciones sistemáticas (δ) con respecto a la altitud así como por los procesos de evaporación y condensación previos a la infiltración. Para su interpretación los análisis isotópicos han sido realizados mediante espec...
19
tesis de grado
Publicado 2025
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La anemia infantil es un problema de salud pública que afecta significativamente el desarrollo físico y cognitivo, especialmente en zonas de gran altitud como Macusani, donde la hipoxia crónica puede modificar la fisiología hematológica. El presente estudio tiene como objetivo determinar la relación entre los niveles de hierro sérico y los valores de hematocrito y hemoglobina en niños diagnosticados con anemia en el Hospital San Martín de Porres, Macusani, durante el año 2024. Se desarrollará una investigación cuantitativa, de tipo aplicada, descriptiva y correlacional, con diseño no experimental y corte transversal. La población estará conformada por 90 niños con diagnóstico confirmado de anemia, seleccionados mediante muestreo censal. Se recolectarán datos secundarios de historias clínicas, los cuales serán procesados mediante el software SPSS v23, aplicando anális...
20
artículo
Publicado 2024
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The quality of potatoes for processing depends on varietal, environmental and crop management factors, and the consumption of potato products has increased.The objective of the research was to determine the effect of calcareous amendments on the production and frying quality of potatoes potato cv. Bicentenaria under high Andean conditions. The research was carried out in the rural community of Canín at Checras district (Lima) altitude of 3880 masl. The climate of the locality is humid and cold, with an annual rainfall of 800 mm and acid soils (pH 5.0) of sandy-clay texture. Five liming treatments and a control without liming were applied to the soil (agricultural lime 500 kg ha-1 and carbonatite 500, 1000, 1500 and 2000 kg ha-1). Agronomic and biochemical characteristics of the tuber were evaluated and sensory analysis was performed for potato frying. Data were analyzed statistica...
