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1
artículo
This study assessed changes in the maximum and minimum surface air temperatures across Peru during the period 1964–2014. For this purpose, we employed the most complete records of air temperature series that were also subjected to a rigorous quality control and homogenization protocol. Based on the homogenized series, we created a monthly gridded data set of maximum and minimum air temperatures at a 5 × 5 km grid spacing. The results suggest a general warming trend in surface air temperature across Peru, albeit with clear spatial and seasonal variation. Our results also reveal some differences in the detectable trends between maximum and minimum air temperatures. Maximum air temperature trends mainly increased during the austral summer (DJF), but cold season minimum air temperature trends showed an opposite pattern, with the strongest warming being recorded in the austral winter (JJA)...
2
tesis de grado
La presente investigación tuvo como finalidad identificar si existe una relación entre la adaptación a la vida universitaria y las características de resiliencia en un grupo de 122 becarios universitarios de condición socio-económica de pobreza o pobreza extrema. Asimismo, busca describir diferencias en ambas variables según características sociodemográficas. Para ello se emplearon el Cuestionario de vivencias académicas (QVA-r) y la Escala de resiliencia para adultos (RSA). Los resultados dan cuenta de una relación directa entre todas las áreas de adaptación y la resiliencia total, siendo las más altas las halladas entre el área de personal (r = .64; p <.001) y estudio ( r = .57; p <.001) con resiliencia total. También, se encontró que las sub-escalas de futuro planeado y competencia social estuvieron relacionadas con todas las áreas de adaptación, encontrándose las ...
3
artículo
Publicado 2019
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Background: Phase Three of the International Study of Asthma and Allergies in Childhood (ISAAC) measured the global prevalence of symptoms of asthma in children. We undertook comprehensive analyses addressing risk factors for asthma symptoms in combination, at both the individual and the school level, to explore the potential role of reverse causation due to selective avoidance or confounding by indication. Objective: To explore the role of reverse causation in risk factors of asthma symptoms. Methods: We compared two sets of multilevel logistic regression analyses, using (a) individual level exposure data and (b) school level average exposure (ie prevalence), in two different age groups. In individual level analyses, reverse causation is a possible concern if individual level exposure statuses were changed as a result of asthma symptoms or diagnosis. School level analyses may suffer fro...
4
artículo
Publicado 2019
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Some previously described environmental associations for atopic eczema may be due to reverse causation. We explored the role of reverse causation by comparing individual- and school-level results for multiple atopic eczema risk factors. The International Study of Asthma and Allergies in Childhood (i.e, ISAAC) Phase Three surveyed children in schools (the sampling unit) regarding atopic eczema symptoms and potential risk factors. We assessed the effect of these risk factors on atopic eczema symptoms using mixed-effect logistic regression models, first with individual-level exposure data and second with school-level exposure prevalence. Overall, 546,348 children from 53 countries were included. At ages 6–7 years, the strongest individual-level associations were with current paracetamol use (odds ratio [OR] = 1.45, 95% confidence interval [CI] = 1.37–1.54), which persisted at school-lev...
5
capítulo de libro
Publicado 2019
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Every few years the tropical Pacific warms abnormally in association with a relaxation of the trade winds, a phenomenon known as the El Niño–Southern Oscillation (ENSO) that represents the strongest fluctuation of the global climate system. Although the contemporary observational record indicates that all El Niño events are not alike, differing in amplitude, warming pattern, and teleconnection, there is a class of events that stands out in terms of the societal and economical impacts: the extreme El Niño events that have occurred every 15–20 years. In this chapter, we propose an overview of the state of knowledge and of some current lines of research dedicated to extreme El Niño events. Building on the recently proposed concept of ENSO diversity, we further synthesize our current understanding of the nonlinear dynamics of this class of events and their expected evolution in a wa...
6
libro
Latin America is currently suffering from two independent but related shocks: the impact of COVID-19 and the shock of commodity prices. Peru, we argue, is a case in which the strongest impact comes from the pandemic. Peru was the first country in Latin America to react and implement sanitary and economic measures against the coronavirus. The country has been in mandatory quarantine since Monday, March 16. This carries very important challenges for all economic actors. Global and national activity has suffered a sudden stop with direct implications for: (i) the income generating capacity of independent workers, (ii) the jobs of formal and informal and informal workers, and (iii) the survival of small, medium and large companies. In this note we consider the situation of Peruvian households in the face of the pandemic, exploring their vulnerabilities through an analysis of their main sourc...
7
artículo
Publicado 2020
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Latin America is a violent region where fear of crime is well spread but still not fully understood. Using multilevel methods for a large and subnational representative household survey (N = 271,022), we assess the determinants of fear of crime in Peru, the country with the highest fear of crime and crime victimization in the region. Our results show that body-aimed victimization (physical or sexual abuse from a member of their household, and sexual offenses) is the strongest driver of fear of crime, even higher than armed victimization. Moreover, safety measures based on social capital are negatively related to fear of crime, suggesting that they are palliatives rather than real protections. Finally, our study shows that people in a higher socioeconomic status are more likely to fear more because they have more (resources) to lose. Policy implications address Latin America as a whole an...
8
artículo
Publicado 2025
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Loneliness and depression are the most prevalent mental health issues among older adults, and their relationship has been documented in studies using reflective psychopathological models based on the total scores. However, mental health problems should be investigated at the level of individual symptoms in order to develop intervention strategies aimed at mitigating the adverse impact of both variables. The goal was to examine the extent to which symptoms of loneliness relate to symptoms of depression in elderly Peruvians using the network method in 328 Peruvian adults with an average age of 68.44 years (SD = 7.64). The participants were selected through non-probability convenience sampling, which may limit the generalizability of the results. The Patient Health Questionnaire-2 (PHQ-2) and three-item UCLA Loneliness Scale were used in this study. Network analysis was used to identify cen...
9
artículo
Publicado 2022
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The COVID-19 pandemic had a strong impact on mental health. Multiple studies report the alarming prevalence of depression, anxiety, and stress-related conditions due to the lockdown measures. Nevertheless, somatization has been an overlooked topic in current literature despite its strong relationship with most mental health conditions. The aim of this study was to describe the prevalence of somatic symptoms and their associated factors in a sample of 3218 undergraduate students from Lima, Peru. A cross-sectional design was carried out. The prevalence of somatic symptoms was measured with the PHQ-15. As predictors of somatic symptom severity, we included psychopathological (depression, anxiety, and stress), psychological (perceived social support, resilience, satisfaction with life, and academic self-efficacy), and sociodemographic (e.g., age, sex, employment status, relationship status, ...
10
artículo
Publicado 2024
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The purpose of this study is to evaluate the phenotypic characteristics and typification of Creole goats in five localities of the Ayacucho region in south-central Peru. Materials and Methods: Data from 149 goats (25 males and 124 females) were collected, excluding animals under 2 years of age, pregnant, and sick. Seven qualitative characteristics and 11 zometric measurements were evaluated, and then 9 zometric indices were estimated. Results: In the region, goats with composite colors predominated (76.50%). Additionally, supernumerary (24.20%) and divergent teats (22.60%) were observed in females, while males exhibited a scrotal bifurcation (32.00%). The origin of the flock had a significant effect (p < 0.05) on body measurements, as well as on pelvic index, transverse pelvic index, longitudinal pelvic index, compactness index, and load cannon bone index, except for body index (BOI), pr...
11
artículo
Publicado 2018
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Las lavanderas ejercían un trabajo duro e intenso fuese de forma particular o institucional. Lavaban en los ríos o fuentes, sitios permitidos o no, muchas veces acusadas por las autoridades de ensuciar el agua, colindante a las ciudades y perseguidas no sólo por motivos sanitarios sino morales por sus cuerpos mojados y expuestos a las miradas. En los hospitales castellanos e indianos, las lavanderas podían ser trabajadoras permanentes o externas. En casi todas las constituciones hospitalarias están presentes, siendo las mujeres más fuertes y jóvenes por el duro trabajo que realizaban. En este artículo se describirá y analizara el caso de lavanderas y roperas de un hospital castellano.
12
artículo
Publicado 2015
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This work analysed the changes in air temperature in 25 meteorological stations in the Altiplano and the surrounding Andean slopes of Bolivia and Peru, and their relationship with El Niño-Southern Oscillation (SO) and the Pacific Decadal Oscillation (PDO). The analysis focused on annual, warm season (DJF) and cold season (JJA) maximum and minimum temperatures. All analyses were undertaken during 1965-2012, but some analyses were also from 1945 and 1955 when data were available. Principal component analysis was applied to the annual and seasonal series to identify spatial differences of changes in maximum and minimum air temperature. There was an overall increase of temperatures since the mid-20th century. The most intense and spatially coherent warming was observed for annual and warm season maximum temperature, with warming rates from 0.15 to 0.25 °C decade-1. Changes in the cold seas...
13
artículo
Publicado 2024
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The purpose of this study is to evaluate the phenotypic characteristics and typification of Creole goats in five localities of the Ayacucho region in south-central Peru. Materials and Methods: Data from 149 goats (25 males and 124 females) were collected, excluding animals under 2 years of age, pregnant, and sick. Seven qualitative characteristics and 11 zometric measurements were evaluated, and then 9 zometric indices were estimated. Results: In the region, goats with composite colors predominated (76.50%). Additionally, supernumerary (24.20%) and divergent teats (22.60%) were observed in females, while males exhibited a scrotal bifurcation (32.00%). The origin of the flock had a significant effect (p < 0.05) on body measurements, as well as on pelvic index, transverse pelvic index, longitudinal pelvic index, compactness index, and load cannon bone index, except for body index (BOI), pr...
14
artículo
Publicado 2011
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Objectives. To examine the extent to which measures of adiposity can be used to predict selected components of metabolic syndrome (MetS) and elevated C-reactive protein (CRP). Methods. A total of 1,518 Peruvian adults were included in this study. Waist circumference (WC), body mass index (BMI), waist-hip ratio (WHR), waist-height ratio (WHtR), and visceral adiposity index (VAI) were examined. The prevalence of each MetS component was determined according to tertiles of each anthropometric measure. ROC curves were used to evaluate the extent to which measures of adiposity can predict cardiovascular risk. Results. All measures of adiposity had the strongest correlation with triglyceride concentrations (TG). For both genders, as adiposity increased, the prevalence of Mets components increased. Compared to individuals with low-BMI and low-WC, men and women with high-BMI and high- WC had high...
15
artículo
Publicado 2019
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In this study, we report on the assessment of elevation-dependent warming processes in the Andean region between 7 °S and 20 °S, using Land Surface Temperature (LST). Remotely sensed LST data were obtained from Moderate Resolution Imaging Spectroradiometer (MODIS) sensor in an 8-day composite, at a 1 km resolution, and from 2000 to 2017 during austral winter (June-July-August, JJA). We analysed the relation between mean monthly daytime LST and mean monthly maximum air temperature. This relation is analysed for different types of coverage, obtaining a significant correlation that varies from 0.57 to 0.82 (p < 0.01). However, effects of change in land cover were ruled out by a previous comparative assessment of trends in daytime LST and normalized difference vegetation index (NDVI). The distribution of the winter daytime LST trend was found to be increasing in most areas, while...
16
tesis de grado
Publicado 2012
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En la presente investigación se exploran las relaciones de las seis dimensiones del bienestar psicológico con los tres componentes del síndrome de burnout en un grupo de 82 técnicas de enfermería de un Hospital Nacional de Lima Metropolitana, cuyas edades fluctúan entre 23 y 67 años. Para ello, se empleó la Escala de Bienestar Psicológico de Riff y el Inventario de Burnout de Maslash. Se obtuvo diversas correlaciones negativas entre las dimensiones del bienestar psicológico y los componentes de burnout. Se encontró que las dimensiones de autoaceptación, dominio del entorno y autonomía correlacionaban inversamente con los componentes negativos del burnout: agotamiento emocional y despersonalización, mientras que las dimensiones de relaciones positivas con otros y propósito de vida se relacionaron indirectamente sólo con el agotamiento emocional. Asimismo, no se obtuvo ning...
17
artículo
Publicado 2020
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In the southern Peruvian Andes, communities are highly dependent on climatic conditions due to the mainly rain-fed agriculture and the importance of glaciers and snow melt as a freshwater resource. Longer-term trends and year-to-year variability of precipitation or temperature severely affect living conditions. This study evaluates seasonal precipitation and temperature climatologies and trends in the period 1965/66–2017/18 for the southern Peruvian Andes using quality-controlled and homogenized station data and new observational gridded data. In this region, precipitation exhibits a strong annual cycle with very dry winter months and most of the precipitation falling from spring to autumn. Spatially, a northeast–southwest gradient in austral spring is observed, related to an earlier start of the rainy season in the northeastern part of the study area. Seasonal variations of maximum ...
18
artículo
Publicado 2024
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The 2022-23 hydrological year in the Lake Titicaca, Desaguadero River, and Lake Poopó hydrological system (TDPS) over the South American Altiplano constituted a historically dry period. This drought was particularly severe during the pre-wet season (October–December), when the TDPS and the adjacent Andean-Amazon region experienced as much as 60% reductions in rainfall. Consequently, Titicaca Lake water levels decreased by 0.05 m from December to January, which is part of the rising lake level period of normal conditions. Such conditions have not been seen since the El Niño-related drought of 1982-83. Using a set of hydroclimatic, Sea Surface Temperature (SST) and atmospheric reanalysis datasets, we find that this new historical drought was associated with enhanced southerly moisture flux anomalies, reducing the inflow of moisture-laden winds from the Amazon basin to the TDPS. Such an...
19
tesis de maestría
Publicado 2017
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El cemento, polvo de color gris y textura fina que al ser mezclado con otros elementos resulta en uno de los materiales más fuertes y resistentes existentes, es un elemento clave en la industria de la construcción. Se encuentra presente en un sinnúmero de aplicaciones y usos cotidianos que acompañan el crecimiento y desarrollo de las sociedades modernas. De acuerdo a las últimas proyecciones disponibles, se espera un escenario favorable para la industria cementera global en los próximos años, con una tasa de crecimiento anual media estable de más de 9% para 2020, sustentada, entre otras razones, por la mayor demanda de proyectos residenciales, producto del incremento del poder de compra en los mercados emergentes. Con relación a los mercados de Perú y Colombia, se encuentran características muy similares. Por un lado, las perspectivas de la industria en ambos países son tambi...
20
artículo
Publicado 2018
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We studied the germination of Eriotheca vargasii (Malvaceae), a poorly known endemic Peruvian Andean tree species characteristic of the dry forests of the Torobamba river valley, Peru. We determined seed characteristics, embryo morphology, viability, and assessed the influence of substrate (natural soil and commercially prepared media), temperature (controlled at 25 ºC and at ambient temperature between 18-22 ºC), and moisture (25 % and 50 % field capacity) on seed germination. Most seeds were ovoid in shape and although they contained well-developed embryos, only 46 % of them were viable. Substrate moisture levels had no influence on germination capacity or rate. In contrast, temperature and substrate type showed strong effects on germination. We observed the highest proportion of germinated seeds in prepared media at both temperatures tested (> 61 %). Furthermore, substrate types als...
