Peru - Science topic

Microturbellarians are all mostly small free-living Platyhelminthes that do not belong to either the Polycladida or Tricladida order. This group includes species of the clades Catenulida and Rhabditophora. Species of microturbellarians are known to live in marine and continental waters such as rivers, where they are diverse and abundant. However, t...

Background Salicylic acid participates in the regulation of the plant's response to a series of environmental stresses such as extreme temperatures, salinity, and oxidative condition of potato growth, so it is necessary to determine a safe application dosage for potato in field conditions. Methods The purpose of the research was to evaluate the ef...

The primary process in an electrical arc furnace (EAF) during industrial steelmaking results in tons of black slags which cause pollution to the environment. In this work, the iron oxides of black slags generated in the EAF from the SIDERPERU plant, Peru was reduced via the carbothermal reaction. The reduction of the black slag to α-Fe is demonstra...

Objective To ensure the health of newborns, it is necessary to perform high-quality diagnostic tests. The TORCH panel is a set of tests that identifies infectious pathogens such as Toxoplasma (Toxo) and Cytomegalovirus (CMV) that are common in low-setting populations. We performed TORCH panel quality planning using six sigma in a reference laborato...

We present the magnetic, structural and ⁵⁷Fe Mossbauer characterization of soils collected from an ancient mercury contaminated city named Huancavelica in Peru. The characterization results indicate that silicates and carbonates are the main mineralogical constituents in the samples. In addition, ⁵⁷Fe Mössbauer spectra at room temperature reveal, t...

The production, compilation, and publication of death registration records is complex and usually involves many institutions. Assessing available data and the evolution of the completeness of the data compiled based on demographic techniques and other available data sources is of great importance for countries and for having timely and disaggregate...

The Spanish version of the 5-item Mindful Attention Awareness Scale (MAAS-5) is a brief measure of the general tendency to be attentive and aware of experiences in the present moment during daily life. The MAAS-5 has been used in different countries; however, an assessment of its cross-cultural measurement invariance (MI) has not been conducted. Th...

Background: Unsafe drinking water, poor sanitation and hygiene, exposure to household air pollution and low cognitive and socio-emotional stimulation are risk factors affecting children in low- and middle-income countries. We implemented an integrated home-environmental intervention package (IHIP), comprising a kitchen sink, hygiene education and...

Jaén is one of the most important cities in the northern highlands of Peru due to its strategic location, commerce, and agricultural activities. Jaén has more than 185 thousand inhabitants, of which 48% live in rural areas, representing approximately 31 thousand rural housing. This research aims to determine the types of rural housing in Jaén, show...

Two randomized controlled trials (RCTs) in Brazil and Peru demonstrated the effectiveness of CONEMO, a digital intervention supported by trained nurses or nurse assistants (NAs), to reduce depressive symptoms in people with diabetes and/or hypertension. This paper extends the RCTs findings by reflecting on the conditions needed for its wider implem...

The main characteristics of photovoltaic (PV) energy and its current development in Latin American and Caribbean countries (LAC); its impact on the electrification of homes, health institutions, and schools in isolated or difficult-to-access communities; and, the advantages thereof are presented and discussed by replacing the use of traditional fue...

This article explores how two Quechua language teachers negotiated and reproduced raciolinguistic ideologies in the classroom during a Spanish immersion study abroad program that focused on indigenous communities in Peru. Specifically, it examines the ways that they conveyed the sociolinguistic appropriateness of racialized “double-possessive” cons...

This study evaluates the emotionality associated with vaccination against COVID-19 using the sentiment analysis technique of tweets in Spanish-speaking Ibero-American countries. Method: In January 2021 a mixed cross-sectional observational study of 41 023 tweets from nine Spanish-speaking Ibero-American countries (Chile, El Salvador, Venezuela, Ec...

About a third of all marine fish in the world are caught in Small-Scale Fisheries (SSF). SSF are increasingly recognised as essential for food security and livelihoods for vulnerable and economically fragile communities globally. Although individual SSF vessels are usually perceived as having little impact on the ecosystem, the cumulative impact of...

When observing transboundary waters through the lens of Integrated Water Resources Management (IWRM), it is essential to emphasize the principle of watershed unicity, which must overcome geopolitical interests while being supported by technical criteria. This paper used a multilevel and multiscale approach for integrated management of transboundary...

Eco-innovation has received a great deal of attention in academia and the business sector because it promotes a firm’s sustainable development and seeks to improve its performance. The prime objective of this study was to analyze the effect of the process, organization, and product eco-innovation on the company’s financial and environmental perform...

Background. The prognostic value of the neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) in patients with COVID-19 is rarely described in older adults. We aimed to estimate the prognostic value of NLR and PLR, determining the mortality of adults over 60 years of age hospitalized for COVID-19 in three hospitals in Peru from Marc...

Uno de los indicadores para medir que tanto aprenden los estudiantes en las escuelas se denomina Pobreza de aprendizaje, y se relaciona con problemas de comprensión lectora. Por ello, la investigación tuvo como objetivo determinar la efectividad de una estrategia didáctica de lectura continua para el mejoramiento la comprensión lectora de estudiant...

Este libro es producto del Seminario de Gobernanza Comunitaria para los Bienes Comunes, realizado del 10 al 13 de agosto de 2021 por la Comisión Estatal de Derechos Humanos de Jalisco y la Universidad Nacional Micaela Bastida de Apurímac, en Perú. El objetivo fue informar al público interesado sobre diversos estudios de caso y estrategias para la d...

RESUMEN Luis Federico Cisneros Vizquerra, el Gaucho Cisneros, fue un general del Ejército del Perú y ministro de Guerra entre 1981 y 1983, años en los que comenzó el conflicto armado peruano (1980-2000). Es, asimismo, el protagonista de La distancia que nos separa, (2016) novela en la que su hijo, Renato Cisneros, intenta entender y problematizar l...

En Colombia, hasta el año 2013, se habían aplicado dos encuestas nacionales de condiciones de seguridad y salud en el trabajo. La primera encuesta se publicó en el año 2007 y fue denominada “Primera Encuesta Nacional de Condiciones de Salud y Trabajo en el Sistema General de Riesgos Profesionales” (Ministerio de la Protección Social, 2007) y la seg...

One of the strongest predictors of future academic achievement is the early and informal math skills children begin their school studies. Because of this, it is essential to have proper tools for measuring the development of mathematical thinking at an early age to be able to intervene in a timelier, more effective way. The purpose of this research...

In this paper we attempt to answer the following question: "Is it possible to obtain reliable estimates for the prevalence of anemia rates in children under five years in the districts of Peru?" Specifically, the interest of the present paper is to understand to which extent employing the basic and the spatial Fay-Herriot models can compensate for...

Background Pediatric intra-cranial germ cell tumors (iGCTs) occur at an incidence of 0.6–1.2 cases/million/year in Western countries. The incidence is reported up to 5 times higher in Japan. It is unknown whether this increased incidence is due to genetic predisposition or environment. Methods The incidence of iGCTs in children ages 0–19 years was...

Nuestro propósito es estudiar, en el marco de las reformas neoliberales, el tránsito de un Estado regulador a uno empresarial en relación a la gestión urbana desde 1990 hasta la actualidad en Lima, Perú. Por ello, hemos realizado un estudio retroprogresivo. En primera instancia, analizamos el marco regulatorio que fundó las operaciones inmobiliaria...

Researchers often struggle to identify appropriate solutions for policy challenges in emerging and low-income countries. Many well-established policy recommendations only apply to a select number of advanced economies, characterised by different institutional and political set-ups and facing different shocks, both as regards their nature and their...

Welcome to our first issue of the CLAS-GRULAC Newsletter for the year 2022. We are very excited to launch our newsletter will inform you to get more information about Latin American issues from social, economic, political, and technological perspectives. This specific issue exposes the education system of Argentina, Brazil, Chile, Colombia, Cuba, M...

O labirinto periférico: aventuras de Mariátegui na América Latina é um estudo sobre a recepção da obra de José Carlos Mariátegui nas ciências sociais latino-americanas. Trata-se de delinear sociologicamente a difusão e as apropriações das ideias mariateguianas no conjunto da história intelectual das ciências sociais e da história do marxismo neste...

This paper presents the results of a quasi-experimental study using information collected through a survey conducted in peri-urban areas of Metropolitan Lima between October and November 2021. The survey was applied to households residing close to and on both sides of the geographic boundary of piped water supply. Our work finds that access to pipe...

Presidential approval in Peru depends on economic outcomes. However, voters are unable to distinguish between outcomes resulting from economic policies and those caused by exogenous external factors. Estimation results from seven Fractional Cointegrated VAR (FCVAR) models suggest that presidential approval increases with the monetary policy interes...

Las personas con discapacidad en el Perú, desde el reconocimiento de su plena capacidad jurídica, son partícipes directos en las relaciones contractuales de consumo para la satisfacción de sus deseos y necesidades. En este ámbito, la legislación se preocupa por garantizar su autonomía y accesibilidad; sin embargo, la discriminación aparece como un...

Rust is declared as big problem for coffee farmers. Several rust attacks were occurred in Latin American countries as Colombia, Mexico, Peru, Ecuador and Salvador. Due to damage caused by coffee rust, several regression models have been proposed to estimate the rust from weather variables. However, these models lack real rust samples because the re...

Nonhuman primates in the Andes region of South America have been excavated in burial contexts and are commonly depicted in ceramic art. Monkey images in Moche iconography are well-known but few systematic analyses have been conducted to approximate their role and meaning in sociopolitical and ritual activities. This chapter investigates variation i...

We present a monograph of the high Andean tree genus Polylepis (Rosaceae), based on a species concept considering morphological, climatic and biogeographic distinctness as indicators of evolutionary independence. In total, we recognize 45 species of Polylepis , grouped in five sections. Polylepis sect. Sericeae is represented by 15 species in four...

Increasing pressures on ecosystems in the Latin American region, as well as the adoption of multilateral conservation commitments, have led to the implementation of instruments that are economic in nature but oriented towards the recovery, conservation, and functioning of ecosystems such as Payment for Ecosystem Services (PES). In the Peruvian Ande...

Households that experience persistent poverty fall behind economically and can be caught in a poverty trap, especially in the presence of shocks capable of shifting their level of assets. However, empirical evidence can be instrumental in the design of policies and measures that would allow households an opportunity to escape. Using household level...

This research is about the methods by which the Spanish Church in the Viceroyalty of Perú Tried to compite with Inca's architecture values.

Resumen OBJETIVO: Determinar la frecuencia de embarazos mediante la tasa de nacidos vivos en el grupo etario de 15 a 19 años y su asociación con el Índice de Desarrollo Humano (2016 a 2021). MATERIALES Y MÉTODOS: Estudio observacional, ecológico, exploratorio y correlacional efectuado con base en la información del Sistema de Registro del Certifi...

Resumen Este estudio forma parte de una investigación doctoral que analiza la relación entre las competencias socioemocionales (CSE) y las creencias docentes del profesor de secundaria en la integración de las TIC. En este sentido se realizó el análisis psicométrico del CCRED: Cuestionario de Creencias Docentes. Para dicho fin, se diseñó una prueba...

En el presente estudio se analizó a México y Perú (dos países de América Latina con características rurales e históricas similares) con el objetivo de determinar la relación que existe entre la tasa de pobreza rural y factores asociados a ella; esto en el contexto del crecimiento de la pobreza en la región, tendencia que se advertía antes de la pan...

El presente estudio se centró en los pescadores que trabajan en los alrededores de la Reserva Nacional de Sistema de Islas, Islotes y Puntas Guaneras (RNSIIPG): Isla Lobos de Tierra e Islas Lobos de Afuera, y a su vez, en las zonas costeras, utilizando el caballito de totora y la balsilla. Se consideró tres líneas prioritarias de la RNSIIPG, como s...

Gabriela Wiener, autora peruana asentada en España, realiza en Huaco retrato (2021) un profundo y transversal ejercicio de búsqueda, cuestionamiento y de-construcción de la identidad al indagar en la figura de su tatarabuelo Charles Wiener. Este austriaco viajó en el siglo XIX a Perú con fines pretendidamente científicos, en lo que fue un abuso de...

Study of small-sized or taxonomically challenging taxa is mandatory to early detect exotic species. The caprellid Paracaprella pusilla has been successfully spreading in many world areas in the last decade. Biofouling from culture lanterns of bivalves Argopecten purpuratus and Pteria sterna were collected between February 2017 and November 2018 in...

This edited volume portrays marketplaces from a mobility perspective as dynamic and open entities consisting of flows of people, goods and ideas. There is a renewed interest in research and policy arenas in marketplaces as the core of cities’ spatial and economic development and socio-cultural life, as incubators of urban renewal and platforms of a...

COVID-19 has caused an economic crisis in the business world, leaving limitations in the continuity of the payment chain, with companies resorting to credit access. This study aimed to determine the optimal machine learning predictive model for the credit risk of companies under the Reactiva Peru Program because of COVID-19. A multivariate regressi...

Reflexión en torno al modelo educativo de CIFE El programa esta orientado a la generación y publicación de artículos científicos de alto impacto de acuerdo a temáticas en Socioformación y Sociedad del Conocimientos multidisciplinario, en bases de datos globales como Scopus o Web of Science, pudiendo opcionalmente publicar en revistas indizadas por...

Habitar el pasado es una metáfora de lo que actualmente significa adquirir una vivienda social en el Perú. Es un concepto que hace referencia a “Herramientas para Habitar el presente. Vivienda en España: sociedad, ciudad, tecnología y recursos”, una publicación dirigida por Zaida Muxi y Josep María Montaner. La presente investigación reinterpreta l...

HIV self-testing (HIVST) is an essential tool within the combined HIV prevention package and has been available in Latin America since 2015. However, HIVST use among key populations remains low. This study describes awareness, willingness, and barriers to HIVST among MSM in Brazil, Mexico, and Peru. A cross-sectional web-based survey was advertised...

Se registra una nueva localidad de distribución para el ciempiés Scolopendra galapagoensis (Bollman) en la Reserva de la Biosfera del Manu en el sureste de Perú. El ámbito geográfico de la especie se amplía significativamente hacia el este de la cordillera de los Andes, en la provincia biogeográfica de la Rondonia.

El artículo presenta los aportes de la educación técnica con doble certificación a la adolescencia rural para desarrollar sus proyectos de vida en articulación con las comunidades locales a partir de la experiencia del Programa Horizontes impulsado por la UNESCO en el Perú, y más específicamente a partir de la experiencia realizada en el Corredor d...

Background: The COVID-19 pandemic significantly impacted the mental and emotional health of the elderly, especially those from low to middle-income countries. However, COVID-19 vaccination may reduce this influence. Therefore, we aimed to estimate the effect of vaccination against COVID-19 on the emotional health of older adults. Methods: We select...

Using macro-social indicators available in published domestic and international sources, this study focused on various push-factors linked to Latin American immigration intakes to Canada during 2000-2015. Push factors were approximated by indicators of the societal context in sending countries and were compiled for the following countries: Argentin...

Along the coast of Peru, intensive urbanization and tourism development were related to coastal scenery deterioration. This investigation carried out a scenery evaluation of 20 urban beaches from the “Circuito de Playas de la Costa Verde” (CPCV), a key beach corridor in Lima (Peru). For this purpose, the Coastal Scenic Evaluation System (CSES) was...

A new species of Bisaltes Thomson, 1868 from Peru and Ecuador is described and illustrated: Bisaltes (Bisaltes) confusa sp. nov. Additionally, Bisaltes (Bisaltes) fuscomarmoratus Breuning, 1966 is excluded from the Ecuadorian fauna.

The research aims to analyze the impact of the drivers of the enabling environment, represented by the macroeconomic stability index (GDP, inflation, foreign exchange reserves and the ratio of debt reserves to short-term foreign exchange). And the financial market stability index (the volume of credit provided to private sectors, value of shares tr...

El presente artículo se centra en el estudio de los appliqué (aplique) del sitio arqueológico de Marcavalle, un asentamiento del Periodo Inicial y Horizonte Temprano (1100 - 700 BCE), ubicado en valle del Huatanay, Cusco, Perú. La investigación en este material se hizo sobre una muestra excavada en el sitio en el año 2013, a partir de la cual se ha...

Background There is evidence of the occurrence of trachoma in Peru, and studies have shown that soil-transmitted helminthiases (STH) are affecting rural communities in the Amazon basin in Loreto Department. This study was done to estimate trachoma prevalence, STH prevalence, and the associated factors for both diseases in children aged 1–9 years in...

Una década de investigación arqueológica e histórica centrada en las haciendas coloniales jesuitas de Nasca (Perú), ha permitido una aproximación a la experiencia cotidiana de una gran y diversa población esclavizada de origen africano. En este artículo exploro la heterogeneidad de las experiencias materiales entre la población esclavizada, colocan...

A new species of Anthicid beetles is described from Peru, Plesionotoxus dissimilis sp. nov., based on specimens collected from the campus of the National University of Piura, an important area of seasonally dry forest in the Piura Region, northwestern Peru.

La Asociación Latinoamericana de Seguridad e Higiene en el Trabajo, ALASEHT, organiza la XXII Jornada Latinoamericana de Seguridad e Higiene en el Trabajo, JOLASEHT online 2019-2022, en Santiago de Chile entre el 25 y 28 de Julio de 2022. La ALASEHT es integrada a la fecha por organizaciones nacionales, sin fines de lucro, de Argentina, Brasil, Col...

Objective. To examine the factorial structure of the Jefferson Scale of Empathy–Medical student version (JSE-S) and assess items’ discriminatory ability at higher and lower empathy levels in medical student populations from different countries and languages.Methods. JSE-S datasets were retrieved from previous studies of 4,113 first- and/or second-y...

El derrame ocurrido, en la refinería La Pampilla, administradas por la empresa REPSOL, dejará fuertes impactos ambientales en la costa peruana, dañando la vida marina y otros componentes bióticos. El estudio analiza la percepción de la población sobre el derrame de petróleo en la Refinería La Pampilla a través de un método de tipo cuantitativo-desc...

L-Asparaginase (ASNase) is used in medicine for neoplasms treatment and in food industry for mitigation of acrylamide in high-temperature processed food. In medicine, commercial ASNases have exhibited side effects and l-glutaminase (GLNase) activity affecting the clinical treatment. The aim of this work was to study a novel ASNase from Enterobacter...

Public construction in developing countries is characterized by a lack of quality design information, poor front-end engineering studies, fragmented procurement, and financial obstacles. As a result, projects exhibit major delays, cost overruns, and contract resolution during construction which end up in failed projects. These issues cause dramatic...

To determine the factors associated with not receiving the booster dose for COVID-19 in Peru, a cross-sectional study by secondary analysis of a University of Maryland and Facebook survey database assessing the global impact of COVID-19 was conducted. Data of Peruvian users of this social network over 18 years of age who answered the survey between...

El proyecto editorial Gobernar el virreinato del Perú, S. XVI-XVII; praxis político-jurisdiccional, redes de poder y usos de la información oficial aspira a seguir generando una fructífera discusión en torno a la relación de tres ejes analíticos fundamentales; gobierno y gobernanza, praxis política-jurisdiccional y valor/circulación de la informaci...

The objective of this study was to analyze the psychometric properties of the recovery experiences questionnaire in Peruvian teachers of regular basic education. Instrumental design research, with the participation of 740 regular basic education teachers (494 women and 246 men), whose ages were between 21 and 65 years old ( M = 40.22, SD = 9.99). V...

This paper reports programmatic recommendations, an advanced seminar series in archaeology, and field tests in geophysics undertaken during a consultancy with the Peruvian Institute of Culture (INC) in October 1982. The invited international program focused on the investigation of twelve historic, Inca, and pre-Inca sites throughout the coast and...

Rainfall and temperature variables play an important role in understanding meteorology at global and regional scales. However, the availability of meteorological information in areas of complex topography is difficult, as the density of weather stations is often very low. In this study, we focused on improving existing satellite products for these...

Liver cirrhosis (LC) is an irreversible, chronic disease and constitutes the last clinical stage of many different liver diseases. The main cause of death is upper gastrointestinal bleeding caused by esophageal variceal rupture. We aim to depict the trend and estimate the morbimortality. For this, we conducted an ecological study and analyzed data...

The health crisis caused by COVID-19 has resulted in the physical and emotional deterioration of health personnel, especially nurses, whose emotional state is affected by the high risk of contagion, the high demands of health services, and the exhausting working hours. The objective of this research was to determine the relationship between fear, a...