bluuebunny/crossref_metadata_2025 huggingface dataset:
Resistencia al mandato de la maternidad: discursos en torno a la no maternidad de mujeres de 25 a 45 años, de estratos medio y alto de Lima Metropolitana que decidieron no tener hijos
Authors: Altamirano Camacho Karol Josefina
Published: November 2024

This article examines the complex dynamics of non-motherhood in contemporary Peruvian society, focusing on middle and upper-class women in Metropolitan Lima. By  employing a qualitative methodology centered on narratives, the study explores the meanings attributed to motherhood and non-motherhood, challenging concepts such as "maternal instinct." Autonomy emerges as a right and diverse reasons for choosing not to become a mother are revealed. Moreover, the study addresses stigma, social pressure, and moral violence, highlighting strategies of resistance against the maternal mandate and the construction of new female identities. The article advocates for inclusive dialogue regarding the life choices of these women.
La evaluación académica y de la investigación en la transición hacia la ciencia abierta en el ecosistema científico-universitario del Perú
Authors: Rovelli Leoni Laura Inés , Vommaro Waisman Pablo Ariel
Published: November 2024

En el marco de una agenda de investigación y de políticas global dinamizada por distintos estudios, informes y declaraciones en torno a la noción de evaluación responsable y de la idea-fuerza de ciencia abierta, el presente artículo introduce un análisis panorámico y un estado de situación sobre sus principales desarrollos en el Perú. Para ello, el escrito actualiza y analiza los avances en relación con tres componentes centrales de la ciencia abierta: el acceso abierto, los datos abiertos de investigación y la ciencia ciudadana. Luego, se exploran algunas de las encrucijadas que enfrenta el ecosistema científico y universitario en torno a la evaluación académica y de la investigación. El abordaje es de corte cualitativo y se beneficia del relevamiento de distintas fuentes documentales y estadísticas. Finalmente, a lo largo del trabajo se despliegan diversos ejemplos regionales de instrumentos de política, reglamentaciones y buenas prácticas en las que se busca fortalecer una evaluación responsable alineada con principios y valores de la ciencia abierta.
Cobrar por publicar (APC) en América Latina: situación de las revistas en el 2023
Authors: Córdoba González Saray
Published: November 2024

Se presenta en este artículo la situación de las revistas latinoamericanas que cobran por publicar (APC), comparando los datos entre los años 2021 y 2023, para mostrar cómo ha aumentado esta práctica durante este periodo. Se destacan los países a los que pertenecen ese grupo de publicaciones y los niveles de las tarifas que cobran. Para ello, se tomaron los datos de DOAJ y de Latindex, pues ambos sistemas incluyen esta característica. Los resultados muestran que la cantidad de revistas se duplicó en ese lapso y que los precios que cobran son bajos o medianos. No obstante, la situación es preocupante y debe llamar la atención sobre las posibles causas que generan esta práctica que atenta contra las revistas diamante de la región.
Perspectiva de la Geografía, junto a la evolución del deber geográfico. Entrevista al Prof. José Osejo
Authors: Diaz Marquina Jerson Sebastián , Mendoza Suarez Paulo Adrián , Jimeno Flores David Lucas
Published: November 2024

In this interview with Professor José Osejo, a physical geographer, his professional training, his choice of Geography career and his experience as a student at the Universidad Nacional Mayor de San Marcos are discussed. Osejo recounts his interest in Geography and how he discovered the degree through his brother-in-law, who was a History and Geography professor and a Geology student. He also mentions his participation in the curricular transformation of the Geography major and his subsequent performance as a professional in the National Office for the Evaluation of National Resources (ONERN).In addition, Professor Osejo reflects on the definition of Geography, highlighting its integral nature and its capacity for specialization in various areas such as Physical Geography, Urban Geography, Economic Geography, among others. He also comments on the growth of Geography as a discipline, encompassing different fields of study and generating new specialties.
Reseña del libro El Desplazamiento Humano desde una Perspectiva del Sur Global: Dinámicas Migratorias en América Latina, África y Medio Oriente
Authors: Linares Ojeda Claudia Janet
Published: November 2024

A migração é considerada um fenômeno constante que permite a troca de tradições e a construção de sociedades multiculturais em todo o mundo. O livro Human Displacement from a Global South Perspective: Migration Dynamics in Latin America, Africa and the Middle East (2021) explica a visibilidade deste fenómeno através da compilação de diferentes estudos de caso e da integração de várias comunidades devido à migração. Neste sentido, o livro analisa os fatores que influenciam a migração, as dificuldades de adaptação em diferentes contextos e as complexidades que os migrantes enfrentam hoje. Portanto, o objetivo desta revisão é demonstrar a relevância e o significado da migração como campo de estudo na literatura acadêmica.
Estabilidad de las obras civiles en la corona del Malecón Costanera, Distrito San Miguel - Lima
Authors: Gallarday Bocanegra Tomás
Published: November 2024

This study indicates the causes that determined the prematural deterioration of the civil work, located on the waterfront of the Malecón La Costanera section Av. Universidad Av. Rafael Escardo San Miguel LIMA, confirms the work did not meet its useful period guaranteed by the Constructor consortium , part of it was made on an uncontrolled landfill, verified with pits, geological mapping and the erosion caused by the marine dynamics, add the calculations made by using the numerical results of the tests and analyzes carried out in the UNI. Application of the Terzaghi formula and the Monobe Okabe method. Support of the recommendations given in the responsibilities matrix.The work in 80% was built on a surface obtained on uncontrolled landfill (dump, formed by solid waste from civil works made in the Lima megalopolis), the difference is on a surface of a natural soil, formed by silts, sands, gravels , pebbles and peat of irregular sequence given by layer on layer with little cementing material (clays), process occurred in hundreds of years, has good packaging. Load resistance> 3 kg / cm2.The layers of soil in fan is the result of different cumulative stages given in the dump from the expansion, modernization and urban vertical growth of Lima. Decade 1980 - 203 (constructive boon). This soil has low packing, carrying capacity qa = 1.7 kgs / cm2. [Terzaghi] Indicator that will rise if it is dosed with clayey soil, affirmed, cultivation soil, or grout oxide of cement or lime is injected, which will give optimum compression behavior (roller), thus stabilize the uncontrolled filling, the cementing material will be in a ratio of 2 / 10m3, process that will form a floor folder with loan material, which will be 2m thick in the five failed sectors [fault plane], the use of excess water in the crown of the embankment slope accelerates the local circular faults.To be installed on the stable or stepped stable slope 62% = 28º, xerophilous vegetation, crossula sp, cacti, grasses variety ray grass poaceae, schinus molle, shrubs and trees, the civil works will fulfill their useful period. It is indicated that the edge of the beach in this sector requires protection by constructing two groynes or perimetric collar based on silicified andesite rocks.
Análisis comparativo de los métodos húmedo y alcalino en la extracción de almidón de semillas de Amaranthus quitensis L.
Authors: González García Juan Carlos
Published: November 2024

In the present reserch, two methods for the extraction of starch from seeds of Amaranthus quitensis L. (Ataco) were analyzed in order to determine the procedure with the best performance and then to determine its main physical-chemical and functional characteristics. Initially, the inflorescences of the Ataco plants were collected, where their seeds are found, to later extract them, dry them to the environment and finally reduce them to fine dust. Then, simultaneous extractions of the starch contained in the flour were carried out by testing with two independent methods; the first wet method with bidistilled water and the second with an aqueous solution of sodium hydroxide (NaOH, 0.25 M); the starch extracted by both methods was washed and dried to the environment, to later calculate its yield, establishing that the highest yield is achieved with the method of extraction with NaOH solution. The results of the proximal analysis of the extracted products showed that there are significant differences (p≤ 0.05) in all properties analyzed since they vary depending on the method. Regarding the functional properties analyzed, it was found that as regards the Water Absorption Index (IAA) and the Water Solubility Index (ISA) there are significant differences between the values measured by each method. Regarding the temperature of gelatinization, there is no significant difference because this property does not depend on the extraction method of the starches but it varies depending on the plant.
Calidad de agua de consumo humano en las comunidades balsa en medio, Julián y Severino de la microcuenca Carrizal, Ecuador
Authors: Lucas Vidal Leonel Rolando , Carreño Mendoza Ángela Lorena
Published: November 2024

A study on the quality of water for human consumption was carried out in Julián, Severino and Balsa en Medio communities located in the micro-basin of the Carrizal River in the province of Manabí, Ecuador. Surface water samples were taken to determine chemical, physical and microbiological properties. To establish the quality of the water in the sampling sites, the ICA NSF water quality index was used, which allows weighing parameters assigning a weight. A completely randomized design with three repetitions was used, taking the localities as treatments. The analysis of variance was carried out through the InfoStat program and the average comparisons through the Tukey test at 5% probability. The physical chemical variables of the locality of Severino showed values that induced lower water quality than those obtained for the localities of Julián and Balsa en Medio, with a similar behavior among themselves. From the microbiological point of view, the highest health risks correspond to the locality of Balsa en Medio, followed by Severino; while the lowest risk corresponded to the town of Julián. According to the ICA NSF criteria, the waters of Balsa en Medio and Julián are classified as “poorly polluted waters”, while the waters of the community of Severino are classified as “contaminated waters”.
Evaluación geotécnica del agregado morrénico y su influencia en la resistencia a la compresión y durabilidad del concreto – Sapallanga – Huancayo - Región Junín
Authors: Andía Arias Janet Yéssica
Published: November 2024

Morrenic aggregates from the quarry of Sapallanga – Chaclas River, have been evaluated geotechnically through laboratory tests to obtain their physical properties. Likewise, other tests of aggregate quality and mix design by resistance and durability have been performed. The evaluation that was carried out allowed classifying the samples of morrenic aggregates into three groups: low weathering, medium weathering, and high weathering. After obtaining the results of the laboratory tests of morrenic aggregates, it was found that they surpass 100% of the design resistance at 28 days. Additionally, it was verified that morrenic aggregates of the Sapallanga - Chaclas Riveer quarry meet the quality requirements of aggregates established in the Peruvian Technical Standard 400.037.
Factores que influyen en la selección del tipo de presa: Caso de estudio de la presa Tullpacancha de almacenamiento de agua para riego
Authors: Casco Cacsire Marioli Marced , Meza Aréstegui Pablo Rubén
Published: November 2024

La presente investigación analiza los factores que influyen en la selección del tipo de presa para el emplazamiento de la presa Tullpacancha. Se realizó la evaluación de diversos aspectos, incluyendo la topografía, la morfología del sitio de cierre, la relevancia de las pendientes de las laderas y la geología de la zona de estudio, entre otros. La cimentación de la presa se estableció sobre roca poco fracturada, con una capacidad de carga de 11 Kg/cm2 a una profundidad de 16 metros y 29 Kg/cm2 a una profundidad de 40 metros. Se recomendó mejorar la cimentación mediante inyecciones de cemento. Los materiales de construcción cumplen con las propiedades requeridas y el volumen necesario, siendo apropiados al encontrarse a menos de 1 km del sitio de fundación.
La altura de la presa está proyectada en 63 metros, para lo cual se recomienda la construcción de presas tipo CFRD. Se realizó un análisis de estabilidad de taludes, estimando los factores de seguridad en condiciones estáticas y pseudoestáticas para la presa finalizada y con el embalse lleno. Los resultados obtenidos indican que la estructura es estable para un diseño de presa tipo CFRD. Tras la evaluación y análisis de los diversos factores, se concluyó en la selección de una presa tipo CFRD.
Las determinantes de la industria metalúrgica básica del hierro y el acero en el Perú: 2000-2020
Authors: Ospino Edery Juan José Manuel , Hinojosa Pérez José Adolfo
Published: November 2024

Siendo la industrialización de carácter fundamental para posibilitar el  desarrollo económico sostenido de la economía de un país, esta investigación de revisión plantea como objetivo central  el señalar,  cuáles han sido las determinantes de   la industria metalúrgica básica del hierro y el acero en el Perú  para el periodo 2000-2020, donde la política económica se encuentra ausente para el desarrollo de este estratégico sub sector, el que se encuentra  correlacionado con la industria de la construcción, el mejoramiento del ingreso per-cápita, las migraciones de las poblaciones del campo a la ciudad, los fenómenos telúricos frecuentes, entre otros.
Precisión de métodos de estimación de edad dental de Demirjian, Willems I y II en una población cusqueña
Authors: Rios Florez Elflori Ricardo , Palomino Soto Mirna Mayra
Published: November 2024

Objective. To determine the accuracy of the dental age estimation methods proposed by Demirjian, Willems I and its modification Willems II with the chronological age in digital panoramic radiographs of patients between 6 and 16 years of age attended at the CERADENT Cusco - Peru radiological center, from January to June 2021. Methods. It was a descriptive, cross-sectional and retrospective study in which 220 digital panoramic radiographs of patients of both sexes (6-16 years) were evaluated. The stages of dental maturation proposed by Demirjian et al. were recorded in each dental piece of the lower left hemiarch to subsequently determine the dental age by means of the Willems I, II and Demirjian methods Results. The Willcoxon test was applied to determine the difference in means between the chronological age and the estimated dental age according to each method. For the total sample, it was found that the Demirjian method was the most accurate, presenting a slight underestimation of age in some age ranges for both sexes, followed by the Willems II method and finally the least accurate was the Willems I method, there were minimal differences between these methods, there were also similarities between the results obtained through the Willems I and II methods. Conclusions. The Demirjian method was the most accurate method for estimating dental age in a Cusquenian population; however, since there were no wide differences between the methods studied, the three methods were good age estimators.
Efectividad en la tasa de recidiva de la marsupialización, enucleación y resección como alternativas de tratamiento frente a queratoquiste odontogénico
Authors: Miguez Ortega Erika Fernanda , García Núñez Ana Karina , Rockenbach Binz Ordoñez María Cristina
Published: November 2024

The odontogenic keratocyst (OKC) has a high rate of recurrence that depends, in some cases, on the treatment chosen for the extraction of the lesion. This issue causes great concern among specialists. Given the various techniques, it is essential to compile current studies to provide reliable information and to be able to select the method that presents the least recurrence. For this reason, it was proposed to perform a literature review and determine the efficacy in terms of recurrence; regarding marsupialization, enucleation, and resection; as treatment options for patients with odontogenic keratocyst. We searched for scientific articles in the Pubmed, ScienceDirect and SciELO databases, published from 2012 to 2022, using the keywords: resection, marsupialization, recurrence, surgical enucleation, and odontogenic cysts. A total of 458 articles were found, 30 of which met the selection criteria, indicating that the total recurrence rate of OKC is between 4.5% and 45%; men between 4 and 96 years old are the most affected and the most frequent location is mandibular. Most authors state that the recurrence rate depends on the chosen surgical technique. Among the options, the most used are enucleation coupled with other methods and resection. It is concluded that marsupialization followed by simple enucleation presents a higher percentage of recurrence in OKC. The treatment with less recurrence is enucleation combined with another method. The bone resection technique appears to have low to zero percentage of recurrence in patients with OKC.
Forma abreviada del Parental-Caregivers Perceptions Questionnaire: propiedades psicométricas de la versión mexicana
Authors: Romo Pérez Camilo , San Martín López Alma Luz
Published: November 2024

Objective. To explore the psychometric performance of the Parent-Caregiver Perceptions Questionnaire short-form in Mexican parents. Methods. Cross-sectional study performed in a sample of 214 participants. The content validity of the P-CPQ-16 and two alternative 14-item scales was examined using exploratory factor analysis. The goodness-of-fit measures of three models were calculated in the confirmatory factor analysis. Reliability measures (Cronbach’s alpha and McDonald’s omega) were calculated. Internal consistency and discriminant power were evaluated using Spearman’s coefficient and success percentages. Results. The P-CPQ-16 with four factors explained 57.88% of the variance. However, the items ‘slow eating’ and ‘shy or embarrassed’ were not satisfactory. The P-CPQ-14 three-factor scale explained 50.22% of the variance with better interpretability of the structure compared to the P-CPQ-16. Reliability of P-CPQ-16 was acceptable (alpha=0.70; omega=0.70) as well as the trifactorial P-CPQ-14 (alpha=0.71; omega=0.72). Confirmatory analysis between models revealed similar goodness-of-fit indicators: model (16 items-4 factors): X2=43.765 (df 62) p=[0.961], GFI=0.98, CFI=0.98, RMSEA=0.036, TLI=0.96, AIC=508.26, model (14 items-4 factors): X2=24.43 (df 41) [p=0.981], GFI=0.99, CFI=0.99, RMSEA=0.029, TLI=0.98, AIC=423.702, model (14 items-3 factors): X2=40.183 (df 52) [p=0.883], GFI=0.98, CFI=0.98, RMSEA=0.035, TLI=0.97, AIC=365.38. Conclusions. The three versions of the P-CPQ showed an acceptable psychometric performance. The three-factor version P-CPQ-14 presented better structure, high factor loads, good model fit, adequate parsimony, and theoretical plausibility. This alternative version needs to be psychometrically tested on a larger sample.
Control de la biopelícula con materiales bioactivos en pacientes adolescentes: reporte de caso
Authors: Bongiovani Rafael , Suzan Gonçalves Tatiane , Lino Brancini Mirilaini , Terenzi Mayara , De Araújo Taylane Soffener Berlanga
Published: November 2024

El objetivo del artículo es reportar el desempeño clínico en el control y disminución de la placa bacteriana en pacientes adolescentes mediante un gel y barniz con partículas S-PRG. Se realizaron tratamientos con materiales bioactivos con tecnología GIOMER en 2 pacientes. En el primer caso se realizó una profilaxis con Pro Care Gel (S-PRG) en un paciente de 15 años con problemas neuromotores para eliminar la placa y posteriormente, se aplicó un barniz con partículas de S-PRG para prevenir la formación de biofilm. En el segundo caso, un adolescente de 15 años normoreactivo con inflamación gingival recibió el tratamiento profilaxis con PRG Pro Care Gel. Se observó una disminución de placa bacteriana tras la profilaxis con el gel Pro Care y la aplicación del barniz en el primer caso. Además, existió una baja incidencia de biofilm incluso después de 11 meses de la aplicación del barniz. En el segundo caso, a las 2 horas de aplicación, se observó una disminución total de la placa. Clínicamente se observó el bueno desempeño clínico de los materiales con partículas de S-PRG, como lo demuestra la literatura científica en cuanto a la reducción de la formación de placa bacteriana en las estructuras dentarias, la desinflamación gingival, proporciona bienestar a los pacientes y restaura la salud bucal de forma menos invasiva.
Descripción de alteraciones histopatológicas en riñones de Rattus norvegicus seropositivos a Leptospira spp.
Authors: Jaramillo Delgado Ingrid L. , Aranzazu Taborda Diego A. , Duque-Arias Santiago
Published: November 2024

The aim of this study was to describe the most common histopathological findings observed by Hematoxylin-Eosin staining in kidneys of Rattus norvegicus naturally infected and seropositive to Leptospira spp using the Microscopic Agglutination Test (MAT) technique. In total, 165 rodents were captured from three locations in Antioquia (Turbo and Medellín). Kidney samples were taken from the seropositive rodents by MAT and Hematoxylin-Eosin staining was used to evaluate the microscopic lesions and Warthin- Starry to visualize the bacteria. The most frequent morphological diagnoses were chronic interstitial nephritis (45.0%), followed by vascular congestion (20.1%) and chronic interstitial pyelonephritis (10.6%). The pathological processes were classified 73.1% as moderate and 26.9% as mild. The agent was not observed with the Warthin starry stain.
Efecto de la densidad de población y temperatura en dos periodos de crecimiento de juveniles de chita Anisotremus scapularis (Perciformes: Haemulidae) en sistemas de recirculación en acuicultura
Authors: Cota Mamani Noemi , Castro-Fuentes Angélica , Montes Melissa , Carrera Santos Lili J.
Published: November 2024

Recirculating aquaculture systems (RAS) are being used to maintain the development stages of the Peruvian grunt Anisotremus scapularis. In this sense, the stocking density and temperature factors were evaluated in two growth periods, as well as their influence on the growth, feeding, survival and well-being of the juveniles, to use the maximum potential of the RAS. Three stocking density (low D1, medium D2 and high D3) and two temperatures (20 ± 1 °C and 24 ± 1 °C) were tested. The experiment was carried out in two periods (6 and 28 g). In each of the treatments, specific growth rate (SGR), thermal growth coefficient (TGC), coefficient of variation (CV), feed conversion rate (FCR), feeding rate (FR), condition factor (K) and survival were calculated. The treatment with the best results in the first period was the density D3 and the temperature of 24 ºC, reaching a final density of 15.6 kg.m-3, SGR: 2% día-1, TGC: 0.5, CV: 15.4%, FCR: 1.2, FR: 2.8% and K: 2. In the second period, the best treatment was the density D3 and the temperature of 20 ºC, reaching a final density of 11.4 kg.m-3, SGR: 1.5% día-1, TGC: 0.2, CV: 15.2, FCR: 2.3, FR: 2.8% and K: 2.3. Survival for all treatments was 100% in both periods. Therefore, the best performance in terms of growth, feeding and well-being of juvenile Peruvian grunt in the two periods of development was obtained at the highest densities (5.3 and 5 kg.m-3) and at a temperature of 24 °C in 6 g juveniles and 20 °C in 28 g juveniles under laboratory conditions.
Reconocimiento de los signos clínicos del Síndrome de Obstrucción de las Vías Aéreas Braquicefálicas en propietarios de canes de las razas Bulldog y Pug en Lima Metropolitana
Authors: Gomero V. Andrea , Salinas C. Eben
Published: November 2024

El objetivo del estudio fue describir el reconocimiento de los signos clínicos del Síndrome de Obstrucción de las Vías Aéreas Braquicefálicas (BOAS) por parte de propietarios de canes de las razas Bulldog Inglés, Bulldog Francés y Pug en Lima Metropolitana en 2020. Para este fin, se elaboró un cuestionario validado por profesionales expertos sobre BOAS. De los propietarios encuestados, el 46% presentó un nivel de reconocimiento medio, 28% un reconocimiento alto y 26% un reconocimiento bajo. Los signos clínicos más reconocidos fueron estertores (93%), jadeo y ronquidos (91%) y estenosis de las narinas (89%).
Depictions of Strabismus in Children’s Animated Films
Authors: Liu Jintong , Mantha Aditya , Benjamin Tyler D. , Goryachok Maksym , Ahmed Mohamoud , Grove Nathan , Puente Michael A.
Published: November 2024

BACKGROUND

Strabismus is known to negatively affect patients' self-confidence and ability to interact with society. Strabismus is commonly depicted in animated films marketed to children, potentially influencing the perception of strabismus by young impressionable audiences.

METHODS

We reviewed all animated films released by Walt Disney Animation Studios from 1989 to 2022 and all films released by Pixar, DreamWorks, and Studio Ghibli before 2023 and identified all characters with strabismus. Five raters each independently performed a character trait analysis of all characters with strabismus, and a sample proportion test was used for statistical comparison of these traits.

RESULTS

One hundred twenty five movies met inclusion criteria. We identified 46 characters with strabismus, with at least 1 character identified in 33 of the 125 films. These characters were more likely to be portrayed as unintelligent (30%) than intelligent (2%), villains (15%) than heroes (4%), and followers (41%) than leaders (7%). Twenty-six (58%) were either mute or did not speak, 24% were portrayed as frightening, 35% had other physical deformities, and 35% were clumsy. Inter-rater reliability testing demonstrated substantial agreement (Kappa 0.61–0.80) or moderate agreement (κ 0.41–0.60) among raters for most of the character traits.

CONCLUSIONS

Characters with strabismus are common in animated films, where they are significantly more likely to be portrayed negatively than positively. These films are marketed to children, and their negative depictions of strabismus likely exacerbate the social stigma faced by children with strabismus.
Changes in properties of thermal insulations under certain environmental effects
Authors: Bozsaky Dávid , Bedő Mózes Norbert
Published: November 2024

Saving energy and reducing greenhouse gas emissions is a priority for the construction sector. Heating of buildings requires the burning of fossil fuels, which can be significantly reduced by insulating the building envelope. Nowadays, the thermal insulation of buildings is essential. There are several important, well-known data about most thermal insulation materials, but there is only negligible information about the change of their properties under installation conditions or if they are already exposed to additional stresses due to structural failures and damages. This study aimed to examine the changes in properties of three common thermal insulation materials when installed in a flat roof or facade and exposed to excess moisture due to the damage of waterproofing or façade and/or when exposed to direct strong sunlight.
Imports and Market Integration in the Roman Mediterranean
Authors: Komar Paulina
Published: November 2024

The degree and nature of integration that existed within Roman economies is a crucial but so far unresolved question within the study of ancient economic history. This paper aims to test the level of market integration in the Roman Mediterranean by comparing amphora distributions from the late Republican period and Principate with those of Late Antiquity in Rome, three northern Adriatic cities (Aquileia, Padua, Verona) and Ephesus with the predicted transport costs provided by ORBIS: The Stanford Geospatial Network Model of the Roman World. The intention is to analyze whether price determined the distribution of staple goods in the Roman Empire, as it does in a modern market economy environment, or whether other factors (e.g., state orders, elite connections etc.) were more important in shaping ancient economic practices.
Enhancing stability and bioactivity of Chondrus ocellatus polyphenols through nanoparticle fabrication
Authors: Shen Jinyang , Zhou Yue , Li Xue , Zhang Xinxin , Liu Caiping , Cao Luqian , Zhou Feiyang , Zhang Shicheng , Zhu Yuexia , Qin Kunming
Published: November 2024

This article aimed to fabricate Chondrus ocellatus polyphenols (COPs)-gelatin-chitosan nanoparticles to enhance their stability and bioactivity. Different preparation conditions were tested to investigate the effects of formulation on nanoparticle fabrication. Free radical scavenging activity of COPs and their nanoparticles were compared. The consequences revealed that optimal preparation was obtained with a chitosan (CS) concentration of 0.5 mg/mL, gelatin (Gel) concentration of 1.0 mg/mL, COPs concentration of 5.0 mg/mL, and Gel-CS-COPs mass ratio of 2:1:1. The resultant nanoparticles had the particle size of 39.79 ± 5.15 nm and encapsulation efficiency of 60.95 % ± 1.86 %. The COPs-Gel-CS nanoparticles were distributed uniformly, and no obvious aggregation was observed by transmission electron microscopy. Nanoencapsulation of the COPs significantly improved their antioxidative stability. This study provided a potential formulation for the application of Chondrus ocellatus polyphenols in antioxidant activities.
A polifonia como método de análise literária: um exercício de leitura em Lucas 7,36-50
Authors: Da Silva Carneiro Marcelo , Carvalho Junior Josemir
Published: November 2024

A pesquisa dos textos do Cristianismo Primitivo numa perspectiva literária permitiu que se aproximasse de diferentes teóricos e seus conceitos arrojados. Neste artigo iremos analisar o texto de Lucas 7,36-49 a partir do conceito de polifonia de Mikhail Bakhtin, utilizado como método de análise literária. Desejamos pensar os processos de transmissão, recepção e recriação das tradições orais e escritas, suas expansões e retrações, permitindo perceber as diferentes vozes presentes nos textos bíblicos. Isso faz parte dessa nova possibilidade de pesquisa do texto bíblico, a partir da literatura e da linguística, sem abandonar aspectos importantes da pesquisa tradicional, como o contexto social e histórico no qual o texto foi produzido. A partir do referencial bakhtiniano podemos pensar a dialogicidade dessas vozes e como a elaboração da identidade das comunidades cristãs primitivas foi forjada pelos textos produzidos por elas.
Nutritional status and physical activity levels of adolescents in public and private schools
Authors:   Faculty of Nursing, Universidad Antonio Nariño, Neiva, Colombia, Arias-Silva María V , Pedreros-Lemuz Valentina , Rodríguez-Perdomo Angie L , González-Lozano Raúl A , Ramos-Castaneda Jorge A
Published: November 2024

Introduction: Obesity and physical inactivity in adolescents are associated with some diseases, and poor academic performance. Studies have reported differences in the level of physical activity according to the type of school. Objective: To compare the prevalence of obesity and physical inactivity in adolescents in a public and a private school. Materials and Methods: A cross-sectional study was conducted among adolescents attending a public school and a private school. Ninth, tenth, and eleventh-grade students between 14 and 17 years were included. Physical activity level was assessed using the Physical Activity Questionnaire for Adolescents, and nutritional status using body mass index for age. Results: Information was collected from 343 students, of whom 55.10% (n=189) were from a public school. The 28.28% were overweight. The overall level of physical activity in adolescents was low (mean= 1.97 95% CI 1.92 – 2.01). It was found that public school students were more inactive adjusted (PR= 1.40; 95% CI 1.03 - 1.92) compared to private school students. Discussion: Adolescents do not achieve optimal levels of frequency and duration of physical activity, highlighting the need for educational programs and attractive interventions to promote physical activity. Conclusion: Adolescent students have low levels of physical activity, with more inactive students in the public school compared to the private school. The prevalence of overweight was high in both schools.
Synthesis and evaluation of MMT/TiO2 nanotube photocatalysts for enhanced degradation of organic dyes in wastewater
Authors: Dao Bang Tam Thi , Nguyen Trung Do , Le Hon Nhien , Ha-Thuc Chi-Nhan
Published: November 2024

This study aims to synthesize a nanocomposite photocatalyst from naturally sourced clay (montmorillonite, MMT) and titanium dioxide nanotubes (TNTs) to efficiently degrade organic dyes in wastewater under UVC light. The TNTs were synthesized through the hydrothermal method and were randomly attached to both the surface and interlayer spaces of the MMT sheets. Pristine MMT was found to exhibit good adsorption properties, while the TNTs demonstrated strong photocatalytic activity. The combination of these materials in the MMT/TNT nanocomposite resulted in a material that exhibited both adsorption and photocatalytic properties. The dye degradation efficiency of the MMT/TNT nanocomposite reached 95%, which is significantly higher than that of pristine MMT (50%) and TNTs alone (60%). This enhanced performance can be attributed to the synergistic effect between the adsorption capacity of MMT and the photocatalytic activity of TNTs. The study highlights the potential of using naturally sourced materials like MMT in the development of advanced photocatalysts for environmental remediation. The MMT/TNT nanocomposite offers a sustainable and efficient solution for the removal of organic pollutants from wastewater. These findings provide a pathway for further development of high-performance nanocomposites that combine the dual functional properties of adsorption and photocatalysis, contributing to more efficient wastewater treatment technologies.
Impact of calcium and copper co-doping on the oxygen transport of layered nickelates: a case study of Pr1.6Ca0.4Ni1–yCuyO4+δ and a comparative analysis
Authors: Sadykov Vladislav , Eremeev Nikita , Sadovskaya Ekaterina , Zhulanova Tatiana , Pikalov Sergey , Fedorova Yulia , Pikalova Elena
Published: November 2024

This study aims at investigating oxygen content and diffusion in the Pr1.6Ca0.4Ni1‑yCuyO4+δ (y = 0.0–0.4) series. Single-phased materials were obtained via nitrate combustion using glycerol as a fuel. The materials exhibit an orthorhombic structure, which correlates well with the absolute oxygen content in the samples in the range of 4.15–3.97. The oxygen mobility in the samples was investigated by a temperature-programmed isotope exchange of oxygen (TPIE) with C18O2 in a flow reactor. The obtained curves, comprising few extrema, were fitted using a mathematical model that includes two or three distinct oxygen forms, each characterized by a specific diffusion coefficient value. The oxygen tracer diffusion coefficient values and the contribution of fast oxygen forms tend to decrease with increasing Cu content (except for Pr1.6Ca0.4Ni0.8Cu0.2O4+δ), which can be explained by the variation of highly mobile interstitial oxygen content since the effective activation energy values remains the same within the calculation error. Comparative analysis shows that this behavior is similar to the trends observed and discussed for Ca- and Cu-doped La and Nd nickelates. Nevertheless, the highest D* value for Ofast was demonstrated for the Pr1.6Ca0.4Ni0.8Cu0.2O4+δ sample (9.4·10–8 cm2/s at 700 °C), which correlates well with superior electrochemical properties of the electrodes on its basis.
CORPO E CAPITAL EM MARX: A NATUREZA HUMANA CORPÓREA NOS MANUSCRITOS ECONÔMICO-FILOSÓFICOS DE 1844
Authors: Fontes Márcia dos Santos
Published: November 2024

RESUMO O presente artigo trilhará um caminho que pretende ir além das interpretações bifurcatórias entre essencialismo a-histórico e relativismo historicista no que diz respeito à elaboração teórica de “natureza humana” pelo jovem Marx, analisando-a a partir da concepção de corpo como unidade dialética entre natureza e história conforme aparece em seus Manuscritos de 1844. Afinal, por que Marx se direciona a uma elaboração teórica da produção da corporalidade humana enquanto faz a crítica do trabalho sob o capital nestes Manuscritos que representam, em sua trajetória, o início de seus estudos sobre economia política e a inauguração de seu materialismo dialético? A partir de uma análise dos cadernos que compõem estes Manuscritos, buscaremos demonstrar que há neles uma teorização do corpo que tanto envolve aspectos transhistóricos – a ligação vital com o “corpo inorgânico” que é a terra – quanto históricos na forma de mediação dessa relação e que tal teorização tem como valor metodológico o fornecimento de premissas histórico-materialistas como contraponto às premissas a-históricas da economia política bem como a inversão da dialética hegeliana sob o ponto de partida do “humano corpóreo”, possibilitando um ponto de vista a partir do qual podemos vir a superar um modo de mediação “patológico”.
VIS-NIR-SWIR spectroscopy in sugarcane (Saccharum officinarum L.) cultivation for phytosanitary purposes
Authors: Ré Natália Correr , Silva Carlos Augusto Alves Cardoso , Oliveira Ana Karla da Silva , Caron Matheus Luís , Nilsson Matheus Sterzo , Duft Daniel Garbellini , Fiorio Peterson Ricardo
Published: November 2024

ABSTRACT: One of the causes of productivity loss in sugarcane cultivation has been associated with the species Diatraea saccharalis, also known as the sugarcane borer. Therefore, this study evaluated the feasibility of using hyperspectral sensors to obtain the leaf spectral response of sugarcane in different periods of infestation at leaf and canopy levels to diagnose D. saccharalis damage in advance. The study included three varieties of sugarcane: CTC9003BT, CTC4, and RB966928. The insecticide Altacor® was used to control pestsin half of the plots. Data collection occurred at the following stages: sprouting, tillering, stalke longation, and early maturation. Data regarding relative water content (RWC), leaf spectral signature in the laboratory and canopy, vegetation indices (NDVI and MCARI), productivity, purity, and total recoverable sugar (TRS) were collected to evaluate the borer effects on the sugarcane crop. The highest RWC was observed for CTC9003BT (60.15%) without insecticide and 59.0% with insecticide. The visible (400-680 nm) and near-infrared (750-1300 nm) spectral bands identified spectral variations in plants with and without sugarcane borer. The percentage of sugarcane borer showed high and negative correlations between productivity, NDVI, and TRS, with coefficients of -0.68, -0.76, and -0.76, respectively. The NDVI and MCARI indices effectively detect plants under stress, but their variation is influenced by multiple factors, making it difficult to associate them with a single problem (sugarcane borer).
Calidad de la visita domiciliaria del agente comunitario de salud en la atención básica y factores asociados
Authors: Kessler Marciane , Thumé Elaine , Facchini Luiz Augusto , Moro Luiza Carolina , Tomasi Elaine
Published: November 2024

Objetivo: evaluar la calidad de la visita domiciliaria del agente comunitario de salud y factores asociados. Método: estudio transversal con 38.865 equipos y 140.444 usuarios del Programa de Mejora del Acceso y de la Calidad de la Atención Básica. Se estableció la “calidad de la visita domiciliaria” y su asociación con características de los municipios, equipos e individuos, estimada por la razón de prevalencia e intervalos de confianza del 95%. Resultados: 139.362 (99,2%) usuarios manifestaron que el equipo de salud contaba con agentes comunitarios. La prevalencia de calidad fue del 51,9%. Después de los ajustes, la prevalencia fue mayor en el Nordeste (Razón de Prevalencia: 1,19 [1,18-1,21]), municipios más pequeños (Razón de Prevalencia: 1,06 [1,03-1,09]), entre equipos con definición de área (Razón de Prevalencia: 1,15 [1,06-1,25]), evaluación de indicadores (Razón de Prevalencia: 1,14 [1,12-1,17]) y satisfacción del usuario (Razón de Prevalencia: 1,11 [1,08-1,13]), que consideraron criterios de riesgo y vulnerabilidad para la definición de la cantidad de personas bajo responsabilidad (Razón de Prevalencia: 1,05 [1,04-1,07]) y sin población no cubierta por agentes (Razón de Prevalencia: 1,03 [1,01-1,04]); entre usuarios con enfermedades crónicas (Razón de Prevalencia: 1,02 [1,01-1,05]) y con alguien en el domicilio con dificultades de movilidad (Razón de Prevalencia: 1,05 [1,02-1,07]). Conclusión: se evidencia la importancia de la organización del proceso de trabajo de los equipos para la calidad de la visita domiciliaria del agente y su papel en la equidad en salud.
Habits and eating behaviors of patients with mental disorders
Authors: Maciel Júlia Franco , Maciel Renata Franco , Miranda Phelipe Brito de , Siqueira Tamiris Mariane Dourado de , Fagundes Andhressa
Published: November 2024

ABSTRACT Objective Associate behaviors and eating habits of patients with mental disorders and related factors that may affect their quality of life. Methods Adult male and female patients, diagnosed with mental disorders, answered a questionnaire about personal and sociodemographic data, with disease-related questions, history of body weight, eating habits and behavior (dietary restrictions, emotional eating, lack of control over food, and intense desire to eat). Pearson's Chi-square and Fisher's Exact Tests were performed for categorical variables, and simple and multiple logistic regression was applied for significant variables (p<0.10). The level of significance was set at 5%. Results A total of 120 individuals participated in the study; 63.3% of them were males. There was a 44.2% risk of developing Dietary Restrictions, 31.7% for Emotional Eating, 25.8% for Intense Desire to Eat and 24.2% for Uncontrolled Eating. Overweight decreased the likelihood of developing Intense Desire to Eat (ACR=0.289), as well as the habit of snacking (ACR=0.362). It also decreased the likelihood of developing Emotional Eating. Factors that contributed to increasing the likelihood were: not taking any action for weight loss (ACR=3.628), and participation in meal preparation (ARCa=2.264), for Emotional Eating and Food Restriction, respectively. Conclusion The study variables for eating behavior are related to psychiatric treatment, and the characteristics of the patients' eating habits negatively affect the likelihood of developing certain risky eating behaviors with a high potential to negatively affect these patients’ health and quality of life.
Determinantes de contabilidade, intenção empreendedora e capacidade de absorção individual no processo de sucessão familiar rural
Authors: Bernardi Bruna , Krüger Cristiane , Michelin Cláudia de Freitas , Zanin Antonio , Peiter Ester Escalante
Published: November 2024

Resumo Esta pesquisa objetivou evidenciar os fatores determinantes de contabilidade, intenção empreendedora e capacidade de absorção individual no processo de sucessão familiar rural. A base teórica foi ancorada nas teorias da Relevância da Informação Contábil, da Capacidade de Absorção, do Comportamento Planejado e do Ciclo de Vida da Empresa Familiar, que fundamentam a investigação. Metodologicamente, adotou-se uma abordagem quantitativa, descritiva e de levantamento. Por meio de questionário alcançou-se 128 produtores rurais da região oeste do Rio Grande do Sul. A análise dos dados envolveu modelagem de equações estruturais. Os resultados evidenciaram que contabilidade e intenção empreendedora são determinantes da sucessão. Curiosamente, esses constructos atuam em direções opostas, com a intenção empreendedora incentivando a sucessão e a contabilidade possivelmente desencorajando a sucessão familiar. Isso pode refletir uma desconexão entre o entendimento dos produtores sobre a contabilidade e as pretensões inovadoras. Nesse sentido, conclui-se que a contabilidade deve estar mais próxima da atividade rural, adaptada para fornecer informações úteis os produtores a gerir seus empreendimentos e facilitar a transferência de conhecimento. A pesquisa possui contribuição tanto na literatura quanto na prática, ao relacionar conceitos que até então não foram encontrados juntos, além de gerar informações relevantes aos gestores rurais, educadores e formuladores de políticas.
Negative pressure therapy in pediatric patient with surgical site infection: experience report
Authors: Pontes Leticia , Azevedo Juliana Szreider de , Secco Izabela Linha , Pereira Higor Pacheco , Vieira Solange Cristina Moreira , Afonso Regiane Queiroz
Published: November 2024

ABSTRACT Objective: To describe the use of negative pressure wound therapy and hydrofiber dressing with silver in a pediatric patient with a hard-to-heal surgical wound infection. Method: This is a descriptive professional experience report on the use of conventional dressings and negative pressure wound therapy in a pediatric patient with a surgical wound infection. It was developed in 2023 at a Public Health Service that is a reference in the care of pediatric patients in the state of Paraná. Results: The surgical wound dehiscence started 12 days after peritoneostomy. Initially, the wound was treated with hydrofiber dressing with silver for 22 days and subsequently, negative pressure wound therapy was used for 15 days, regenerating the wound. Conclusion: Negative pressure wound therapy in pediatrics proved to be safe, effective and efficient for the treatment of complex wounds and corroborated the skin regeneration process, as did hydrofiber dressing with silver.
Parental care experience of children with type 1 diabetes: a qualitative meta-synthesis
Authors: Zhang Zhaoying , Wang Xin , Dong Wenwen , Gao Danshan
Published: November 2024

ABSTRACT Objective: To assess qualitative studies on parents’ caregiving experiences whose children have T1DM and develop personalized support strategies based on the findings. Method: A systematic review with meta-synthesis performed in the Cochrane Library, Embase, Scopus, CINAHL, PubMed, Web of Science, CNKI, CBM, VIP, and Wanfang databases. Quality was assessed via the JBI criteria, and meta-aggregative method was applied to categorize the results into subtopics and aggregate into three interrelated meta-topics to understand parents’ caregiving experiences. Results: In total, 2,100 articles were found, out of which 15 were selected and analyzed. The identified three meta-topics were “Parents facing multiple physical, mental and life challenges”, “Parents’ lack of a full range of external support” and “Parents’ caregiving role competency enhanced to adjust to the new life”. Conclusion: it is critical for healthcare professionals to recognize these parental experiences and offer targeted knowledge, skills training, and psychological support tailored to their needs, including group training, online mindfulness interventions, and improved empathy from the medical team.