bluuebunny/crossref_metadata_2025 huggingface dataset:
Structure, Morphology, DC-Electrical and Dielectric Characteristics of Chromium(III) Substituted Co-Li Ferrite Nanoparticles
Authors: Nawpute Asha A. , Rajmane S.V. , Tapsale Sudarshan D. , Jadhav K.M.
Published: December 2024

In this study, a detailed analysis of the lattice structure, micro-structural features, DC-electrical properties and dielectric characteristics of Cr3+-substituted cobalt-lithium-based ferrite oxide nanoparticles (CoLiFCr NPs) synthesized using a sol-gel method enhanced by synergistic sol-gel auto-combustion is presented. Citric acid monohydrate (C6H8O7·H2O) was utilized as a chelating agent, maintaining a metal nitrate to citrate ratio of 1:3. Substituting Cr3+ in Co-Li ferrite significantly alters its crystal structure, morphological, DC-electrical and dielectric characteristics. The X-ray diffraction (XRD) analysis confirmed the crystalline formation of Co0.8Li0.4Fe2-xCrxO4 nanoparticles (where x = 0.0, 0.2, 0.4 and 0.6); exhibiting the single-phase cubic structure characterized by a spinel configuration, falling under the space group Fd-3mO7h. The lattice constant a for CoLiFCr NPs (x = 0) was measured at 8.338 ± 0.002 Å, which decreased to 8.291 ± 0.002 Å upon Cr substitution (x = 0.6), as confirmed by Cohen’s analytical graphs. The crystallite size (D), determined using the Debye-Scherrer’s formula, ranged from around 18.9 to 29.74 nm. Peak broadening in CoLiFCr NPs was further examined through Williamson-Hall and size strain analyses. The FTIR spectra of CoLiFCr nanoparticles revealed the presence of metal-oxygen (M-O) bonds typical of spinel structures, featuring significant peaks at 443 cm–1 and 537 cm–1. High-resolution transmission electron microscopy (HR-TEM) images showed the single-crystal CoLiFCr NPs with nearly spherical morphologies. The study of optical properties was conducted using UV-visible spectroscopy. The nanoparticles with x = 0.2 displayed high ε' values at 50 Hz, indicating strong polarization capabilities, while those with x = 0.6 exhibited a decrease possibly linked to structural changes affecting polarization. The DC resistivity of CoLiFCr nanoparticles was investigated to understand their electrical behaviour highlighting the influence of substitution of Cr3+ on conductivity.
Medium Effect on Swelling and Sorption Behaviour of Sodium Chloride from-and-into Poly(vinyl alcohol)-Glutaraldehyde Hydrogel at Room Temperature
Authors: Hendrawan Hendrawan , Aziz Hafiz Aji , Khoerunnisa Fitri , Lestari Yuni , Idauli Augita Ria
Published: December 2024

This work aims to study the swelling behaviour of poly(vinyl alcohol)-glutaraldehyde (PVA/GA) hydrogel under various acidity and NaCl concentration of medium and release behaviour of NaCl from PVA/GA hydrogels. The hydrogels were characterized by FT-IR and SEM techniques. Repeated washing was necessary to produce a residual-free PVA/GA hydrogel. The FTIR spectra demonstrated that the incorporation of NaCl into the PVA/GA hydrogel did not result in specific interactions. The swelling profile of PVA/GA at the different pH medium was due to protonation and charge screening effects, while its swelling behaviour at various salt concentrations in medium was associated with the charge screening and osmotic pressure effects. The kinetic profile of NaCl absorption and desorption from-and-into PVA/GA was presumed to be controlled by the physical properties of hydrogel such as porosity, cavity and characteristic of the hydrodynamic radii of NaCl.
A Novel Phenolate-Thiadiazolyl Based Carbonate Sensor: Design, Synthesis and Characterization
Authors: Pramanik Chandana
Published: December 2024

A highly selective and sensitive phenolate-thiadiazolyl based colorimetric as well as fluorometric chemosensor (E)-2-(((5-(2-chlorophenyl)-1,3,4-thiadiazol-2-yl)imino)methyl)-6-ethoxy phenol (HL) has been designed and synthesized by Schiff base reaction. This probe has been characterized by spectroscopic techniques such as NMR (1H), ESI-MS and IR spectroscopy. This probe, HL can detect selectively carbonate anion in tris-HCl buffer solution (10 mM, pH 7.2, 1:1 v/v) medium by colorimetric and fluorometric method. The limit of detection of the probe towards carbonate is 0.435 µM. The 1:1 stoichiometry of binding of HL and carbonate was supported by ESI-MS spectra, TGA and Job’s plot analysis.
“Insert-Coin”: A Prospective Study of Coin Ingestion in Children of Southern Italy
Authors: Quitadamo Paolo , Di Napoli Linda , Lerro Federica , Gragnaniello Piergiorgio , Bucci Cristina , Isoldi Sara , Puoti Maria Giovanna , Turco Rossella , Carangelo Ludovica , Caldore Mariano , Valitutti Francesco
Published: December 2024

INTRODUCTION:

Coins are the most commonly ingested foreign bodies. When they get stuck in the distal esophagus, there is no general agreement about the timing of their removal because some of them may spontaneously migrate into the stomach, no longer requiring removal. We aimed at evaluating the gastric spontaneous passage of esophageal-retained coins, as well as complications.

METHODS:

Children admitted for coin ingestion were enrolled.

RESULTS:

Eight hundred seven children were enrolled. Among the medium-distal esophageal retained coins, we reported a spontaneous gastric dislocation in 65%, with no further need for endoscopy.

DISCUSSION:

When coins are trapped in the middle/lower esophagus, we suggest withholding the procedure for at least 6–12 hours, especially for older children, because 2/3 pass spontaneously, not requiring endoscopic removal.
Basurales en la cuna del país. La espacialización ideológica del conflicto urbano (Buenos Aires, 1979–1982)
Authors: Hernández Silvia
Published: December 2024

Este artículo interroga, desde una teoría materialista del discurso, la creación de un área de preservación histórica (distrito U-24) en la ciudad de Buenos Aires en 1979 y la polémica que ella suscitó en un contexto dictatorial signado por demoliciones masivas para la construcción de autopistas urbanas y ensanches de avenidas. Mediante el estudio de categorías discursivas de espacialización de la cuestión social (el «baldío» y la «casa derruida»; el «patio»; el «barrio»; el «moderno edificio» / la «torre») se sustentan tres tesis: 1) que, durante la dictadura, existían contradictoriamente formaciones discursivas que plasmaban relaciones heterogéneas entre ciudad y tiempo; 2) que esas categorías constituyen modos ideológicos de alusión/elisión de la cuestión social, en un contexto de desplazamiento sistemático de sectores populares del centro de la ciudad; 3) que estas categorías discursivas permiten observar un desplazamiento desde una temporalidad «moderna» a otra «presentista».
Procesos de producción de conocimiento
Authors: Fabrizio Maria Laura
Published: December 2024

Este trabajo se ubica en los debates en torno a los procesos de aprendizaje. Nos situamos en una perspectiva de análisis que reflexiona sobre la práctica cotidiana situada y entendemos que todo proceso de construcción de conocimiento ocurre en un entramado relacional que otorga condiciones de posibilidad al aprendizaje incluyendo prácticas, artefactos y rutinas históricas que pueden ser acumuladas y utilizadas con posterioridad. Desde una perspectiva histórico etnográfica, analizamos las modalidades de construcción de conocimiento que ocurren en Antártida. Indagamos en las prácticas desarrolladas por personal científico y técnico, considerando la circulación de saberes, rutinas y utilización de artefactos y el desarrollo de comunidades de práctica. Suponemos que toda actividad, incluida el aprendizaje, está situada en y hecha de las relaciones entre personas, contextos y prácticas. De este modo, analizamos cómo se configuran dichas relaciones tomando en cuenta las diversas formaciones y trayectorias de los sujetos, variables como la “experiencia antártica”, la cantidad de campañas de investigación realizadas, entre otras cuestiones.
Universidades Públicas del nordeste argentino: indicadores y prácticas de Comunicación Pública de la Ciencia y la Tecnología
Authors: Rodriguez María Itatí
Published: December 2024

El presente trabajo se propone reflexionar sobre tres universidades públicas del Nordeste Argentino (NEA) en relación con el lugar que ocupan en el sistema científico argentino y para la comunidad mediante distintos indicadores y encuestas sobre ciencia, tecnología e innovación (CTI) en Argentina y Latinoamérica. Nos interesa reflexionar sobre estos datos y analizarlos en relación con prácticas de Comunicación Pública de la Ciencia (CPC) que realizan. Para ello, en primer lugar, compartimos nuestra perspectiva teórico-metodológica para pensar la CPC y el rol de las universidades en esta temática. En segundo lugar, analizamos distintos indicadores y resultados sobre la situación actual de la CTI a nivel nacional y regional. Luego, trazamos un mapa sobre prácticas de CPC en tres universidades del NEA: Universidad Nacional del Nordeste, Universidad Nacional de Formosa y Universidad Nacional de Misiones
Entre capitales, habitus y condiciones socio-institucionales: las posiciones y tomas de posición de docentes-investigadores en la Universidad Nacional de San Juan
Authors: Algañaraz Victor , Montaño Franco
Published: December 2024

El presente artículo tiene por finalidad indagar la configuración reciente de la llamada “profesión académica” en la Universidad Nacional de San Juan (UNSJ). Para ello, se abordan dos dimensiones analíticas: las posiciones del cuerpo docente en la estructura académica (de acuerdo a sus cargos, categorías y dedicaciones) y sus heterogéneas tomas de posición en función de sus capitales detentados y perfiles diferenciales de producción y circulación del conocimiento. La propuesta se desprende de una línea de investigación desarrollada en el Instituto de Investigaciones Socioeconómicas (IISE, Facultad de Ciencias Sociales) de la UNSJ, en el marco del Proyecto CICITCA-UNSJ denominado “Cartografía de la profesión académica en la Universidad Nacional de San Juan (2019-2024)”, acreditado vía Resolución N°0116-FCS-UNSJ-2023. El trabajo ha sido abordado desde un enfoque metodológico relacional, articulando un acceso estadístico-documental tendiente a recrear las condiciones objetivas de configuración del espacio académico estudiado, con un acceso etnográfico enfocado en recuperar las experiencias de docencia e investigación de profesores/as de la Universidad, a partir de sus propios testimonios.
Desigualdades culturales en el ingreso a la universidad. Un estudio de caso en psicología de la Universidad de Congreso
Authors: Gutiérrez Leticia
Published: December 2024

El artículo examina las desigualdades de capital cultural presentes entre estudiantes de primer año de Psicología en la Universidad de Congreso. La investigación se basa en una práctica situada y forma parte del Trabajo Integrador Final de la Especialización en Docencia Universitaria de la Universidad Nacional de San Juan (UNSJ). El estudio revela que las desigualdades de capital cultural con el que los estudiantes ingresan a la institución marcan desde el inicio el proceso de aprendizaje, generando dificultades en la comprensión de los contenidos teóricos e implementación del programa académico. 
La investigación destaca la necesidad de adaptar las prácticas pedagógicas y el contenido curricular para abordar la diversidad cultural del estudiantado. La consideración de la heterogeneidad de capital cultural de los estudiantes es crucial para reformular las metodologías de enseñanza desde el punto de partida de las trayectorias y promover la integración efectiva de los estudiantes del primer año de Psicología al ámbito académico, con el objetivo de aminorar las brechas de la desigualdad. Desde este posicionamiento se desprende una propuesta de intervención pedagógica que se encuentra en fase de revisión y análisis por parte del Equipo de Gestión y el Servicio de Orientación al Estudiante (SOE) de la misma Universidad
La incorporación del querellante en el Nuevo Código Procesal Penal Juvenil de Santa Fe. Su procedencia a la luz de los principios constitucionales y convencionales
Authors: Boero Leandro Mauricio
Published: December 2024

El presente trabajo de investigación pretende ser un aporte tendiente a indagar si la incorporación de la figura del querellante en el nuevo Código Procesal Penal Juvenil de la provincia de Santa Fe se ajusta a los principios, estándares y normas fundamentales del sistema de promoción integral de derechos de los niños, niñas y adolescentes. Se expondrán los principios constitucionales implicados, como así también el corpus iuris internacional de protección de los derechos de los jóvenes en materia penal, con énfasis en el principio de especialidad y en el paradigma dominante del interés superior del niño. Asimismo, se reflejará la opinión especializada de la doctrina en referencia a la temática, y se hará referencia a la dirección seguida por la jurisprudencia de nuestros tribunales en relación a la constitución del querellante en los procesos penales seguidos a los niños y adolescentes. Por otra parte, se trata de un trabajo de tipo exploratorio y cualitativo, que procurará a través de sus cuatro capítulos dar cuenta de la incompatibilidad de la actuación del querellante en un proceso seguido contra un joven imputado de un delito penal, teniendo en cuenta la especialidad de la justicia penal juvenil, en cuanto enfoque que instaura límites a la actividad represiva estatal, teniendo en consideración que el propósito de la sanción penal juvenil es la rehabilitación y la reintegración del joven infractor.
Editorial RDEE 3(2), 2024
Authors: Cardozo Lucas , Fernández Víctor Ramiro
Published: December 2024

Presentación del número con los avances alcanzados en la indización de la revista durante el año 2024.
El ambiente como cuestión pública: políticas, actores y territorios
Authors: Castro Hortensia , Gomitolo Mercedes Sofía , Isla Raffaele María Laura
Published: December 2024

Este Dossier busca contribuir a los debates sobre desarrollo, estado y espacio desde abordajes centrados en la cuestión ambiental. La elección de este eje temático parte de entender que los procesos y problemas ambientales son una marca clave de las geografías actuales y que, por ende, tensionan las posibilidades y alcances de las políticas de desarrollo, así como de los proyectos espaciales asociados a ellas. A través de los siete artículos que componen el dossier se abordan asuntos tales como: trayectorias de transición agroecológica, controversias por contaminación de cuerpos de agua, normas ambientales y acceso a la justicia, políticas de conservación de la naturaleza y políticas de (des)protección de bosques nativos y humedales, infraestructuras para la conectividad global y riesgo de inundaciones, vínculos entre extractivismo minero y transición energética.
Conflictividad socioambiental por aguas: políticas de lo (in)visible
Authors: Arqueros María Ximena , Pereira Jakobowicz Karin Giselle , Kesel Julieta
Published: December 2024

En este trabajo reflexionamos sobre procesos de mercantilización de naturalezas y culturas en el marco del capitalismo global. Desde una perspectiva multiescalar, el acople global-local de los sistemas sociotécnicos se concreta en los territorios, como momentos articulados en redes de relaciones y acuerdos sociales en interrelación con las materialidades. Allí se ponen en juego complejas tramas normativo-técnicas que buscamos develar, pues es a través de ellas que se efectivizan y operan de modo sistémico los procesos de mercantilización y de resistencia, en estrecha interdependencia con las transformaciones territoriales.
Desde la perspectiva de la Ecología Política del agua analizamos de manera comparativa dos casos de procesos de conflictividad socioambiental por contaminación de aguas en Argentina: uno por plaguicidas en Lobos (Buenos Aires) y otro por floraciones algales con cianobacterias en Concepción del Uruguay (Entre Ríos). Nos preguntamos ¿de qué modo y con qué efectos las normas y objetos técnicos median en los procesos de mercantilización de naturalezas y culturas en los que se identifica contaminación y deterioro de cuerpos de agua? y ¿Cuáles son las transformaciones y disputas territoriales asociadas a ellos?
El diseño metodológico de la investigación es cualitativo y persigue un análisis comparativo entre los dos casos de estudio. Las fuentes de información fueron entrevistas a informantes clave, observaciones participantes y fuentes secundarias.
A partir del análisis de las redes de relaciones en torno a determinados objetos normativo-técnicos, reflexionamos acerca de la condición de visibilidad/invisibilidad de los procesos de deterioro en los cuerpos de agua y su relación con las políticas públicas y modelos de desarrollo.
Megaminería de cobre para la transición energética: análisis del proyecto “Malargüe Distrito Minero Occidental”, provincia de Mendoza, Argentina
Authors: Isla Raffaele María Laura , Castro Hortensia
Published: December 2024

El artículo busca contribuir a los estudios sobre la relación entre el paradigma de la transición energética y la expansión del extractivismo minero en Argentina, así como al análisis de la trayectoria de políticas públicas provinciales en la materia, especialmente en aquellas jurisdicciones con normativas de regulación de la actividad minera y/o de protección del agua. Para el análisis se toma como caso de estudio el reciente proyecto “Malargüe Distrito Minero Occidental” (MDMO), una iniciativa promovida por el gobierno de la provincia de Mendoza bajo los argumentos de la necesidad del cobre para la transición energética. El trabajo tiene por objetivo indagar acerca de los discursos y las estrategias utilizadas para diseñar e implementar esta política pública en una provincia donde no estaban dadas las condiciones de posibilidad que permitieran proyectar la minería metalífera a cielo abierto. Para ello se definió una estrategia teórico-metodológica basada en los planteos sobre el referencial de las políticas públicas a través de la indagación de una variedad de fuentes escritas y orales (documentos estatales, entrevistas a informantes clave, exposiciones en audiencia pública). El análisis, centrado en los actores estatales, ha permitido identificar los principales valores, hipótesis y metodologías que construyen a MDMO como una iniciativa verde. Entre ellos se destacan: valores asociados a la minería responsable y el compromiso moral con la transición energética, hipótesis relativas a Malargüe como proveedor de cobre para el mundo y metodologías de producción territorial bajo una lógica zonal y construcción de licencia social a través de estrategias de transparencia.
Internalizing the Value of Mutual Cooperation in Ananda Kindergarten in Pulau Tengah Village
Authors: Ade Candra Gustia
Published: December 2024

This study aims to internalize the value of mutual cooperation in Ananda PAUD students in Pulau Tengah Village. This is due to the influence of modernization which forms an individualistic attitude, making it difficult to cooperate, take responsibility and help each other. The research method used is qualitative research using a naturalistic inquiry approach. Informants in this study used purposive sampling. Data collection was carried out through observation, interviews, and documentation studies. Data analysis using triangulation of data sources, with stages of data collection, data reduction, data presentation, conclusions, and data verification. The results of the study indicate that the process of internalizing the value of mutual cooperation in students is carried out in several stages, the first stage of transformation is carried out through oral communication, written communication, and listening and reading. second, the stage of value transactions through two-way communication, and the third stage of transinternalization is carried out by collaboration, habituation, and exemplary behavior. The process of internalizing the value of mutual cooperation in students from an early age can cultivate and preserve the values and meaning of mutual cooperation, such as cooperation, solidarity, responsibility, togetherness, concern, and unity. This study is expected to contribute to the importance of maintaining and preserving the values of cooperation from an early age so that they are not lost in the current era of modernization.
Analysis of Parenting Patterns for Early Childhood with Gadget Addiction
Authors: Rifyal Novalia  , Titin Kusayang
Published: December 2024

This study aims to analyze the parenting style of parents towards early childhood with gadget addiction in Kerisik Tuo Village, Kayu Aro. The research method used is qualitative with a case study approach. Data was collected through in-depth interviews with five parents who had early childhood addiction to gadgets, as well as direct observation of parent-child interactions. Data analysis was carried out using thematic analysis techniques. The results of the study showed that the parenting pattern of parents for early childhood with gadget addiction in Kersik Tuo Village, Kayu Aro, tended to vary. Some parents adopt an authoritative approach, trying to limit the time spent on gadgets and provide strict supervision over their children's online activities. Meanwhile, some parents tend to give their children full freedom to use gadgets without adequate supervision. These findings identify the importance of the role of parents in controlling the use of early childhood gadgets and the need for education about the negative impact of gadget addiction on child development. This research is expected to contribute to increasing parents' awareness of the importance of healthy parenting in this digital era.
The Relationship Between Teacher-Student Relationship and School Adjustment in Cilandak South Jakarta
Authors: Sugeng Soebardjo Delia Ananda , Fidrayani
Published: December 2024

The relationship between teachers and children plays an important role in determining children's adjustment to school, especially in early childhood education environments. A positive relationship between teachers and children is believed to help children overcome challenges in the adaptation process, thus contributing to their success in the school environment. The purpose of this study was to investigate the relationship between teachers and students with school adjustment in Kindergarten A students. Using a quantitative methodology, this study gathered data from 70 respondents who filled out questionnaires. With a correlation value of 0.604, the study discovered a positive and significant link between school adjustment and the relationship between teachers and students. According to this study, students' school adjustment is positively correlated with the strength of their interaction with their teachers. Furthermore, teacher-student relationships contribute 36.5% to school adjustment, while the remaining 63.5% is influenced by other factors such as family support, social environment, and individual student characteristics. This study emphasizes the importance of teachers' roles in fostering positive relationships with students to support optimal school adjustment processes.
Exploring Journalism Convergence: A Qualitative Study of Media Group Network and Mahaka Media
Authors: Iskandar Dudi , Suryawati Indah , Liliyana
Published: December 2024

The development and practice of journalism are mainly determined by the availability of information and communication technology. Internet-based technology has transformed all lines of journalism. Journalism convergence is not only a trend, but also a necessity in the contemporary media industry. There are three types of journalism convergence, namely newsroom, newsgathering, and content.  In newsroom convergence, journalists from different platforms work together in one news production room and carry out their tasks in accordance with their media. Newsgathering convergence requires journalists to multitask, while content convergence or news content means that news is displayed in the form of multimedia content that combines texts, images, audio and others. This study aims to describe and analyze the practice of journalism convergence in Media Group Network and Mahaka Media. Using a qualitative approach, the researchers conduct observation, interview, and literature review as data collection techniques. This study finds that Media Group Network and Mahaka Media have already applied these three journalism convergence models (newsroom, newsgathering, and content). Media Group Network and Mahaka Media have been continuously and consistently applying those three aspects of journalism convergence. However, there are some differences in the journalism convergence process in Media Group Network and Mahaka Media, namely the code of ethics and training for journalists. Another difference is that Mahaka Media provides print on demand for its readers, while Media Group Network has broad coverage on journalism convergence through free to air television, Metro TV
Public MTs Students Engagement with Digital Media: Are They Really Competent?
Authors: Noviani Nur Laili , Mardhiyani Nur Laili Mardhiyani , Sihombing Adison Adrianus , Maknun Moch Lukluil , Reswari Girindra Putri Ardana
Published: December 2024

Digital literacy is one of the essential skills for students in this digital age to improve their academic performance. Digital media can be used to support learning in daily school life, so both of teachers and students must be competence in the digital world. Even mobile/digital games can be used as one of the learning tools. The Ministry of Communication and Information Technology and the Ministry of Religious Affairs have joined hands to improve the digital literacy of students, especially in madrasas. However, there are no previous studies that provide us with the digital literacy of madrasa students. The aims of this study are to find out and analyze the digital literacy index of madrasa students and also their engagement with digital media. The research was conducted in MTsN in Semarang using an offline survey and the result is analysed using descriptive quantitative method. The result shows that their digital literacy is at high/good level. Students are involved in the digital world because their daily activities can’t be separated from technology and digital media. The result reflects that today’s students are considered as digital native generation whose their life development is highly influenced  by digital world. In this case, knowing the digital literacy index becomes an urgent and fundamental matter
The impact of physical education and sports lessons on physical activity competence
Authors: Bulut Ömer Faruk , Genç Harun
Published: December 2024

In this study, it is aimed to compare the Physical Activity (PA) proficiency of 12th-grade students in Bingöl Province who take and do not take Physical Education and Sports (PES) lesson in the 2023-2024 academic years. A total of 231 12th-grade students (105 girls and 126 boys), with an average age of 17.51±0.57 years, height of 169.49±9.42 cm, and weight of 60.05±11.94 kg, participated in the study. Of these students, 149 were enrolled in PES lesson at two different Anadolu high schools, while 82 were not enrolled in PES lesson at two different vocational and technical Anadolu high schools. The Physical Activity Proficiency Scale (PAAS), developed by Campbell et al. in 2016 and adapted into Turkish by Saygın et al. in 2017, was applied to the participants to assess their physical activity proficiency. The obtained data were analyzed using the Mann-Whitney U test. The level of statistical significance (α error level) was accepted as p<0.05. A significant difference in favor of students who take PES lessons was found between the students who take and do not take PES in the second item of the "Physical Activity at School" dimension and the third item of the "Physical Activity in Transportation" dimension (p<0.05). Although no significant differences were found in other dimensions and items, participants who took PES lesson scored higher than their peers who did not take PES. In the data obtained based on gender, no statistically significant difference was found between male students who take and do not take PES lesson. In females, a statistically significant difference was found in favor of participants who take PES lesson in the first, second, third, and sixth items of the "Physical Activity at School" dimension (p<0.05). Based on the data obtained, 12th-grade students who take PES lessons have more confidence in their physical activity proficiency. In conclusion, by encouraging students to engage in physical activity, it can be said that promoting exercise habits in children will not only enhance their academic success but also help them integrate exercise into their lives after their education, leading to a healthier body.
Genomic variation in self-pollinated clove (Syzygium aromaticum (L.) Merr. & Perry) accessions from the Western Ghats
Authors: Sreekala G S , Avinash M , Reshma P , Reddappa J B , Anargha T , Nainu Joseph , Deepa S Nair
Published: December 2024

Clove, the dried, unopened flower buds of Syzygium aromaticum (L.) Merr. & Perry, is the mainstay of income for farmers in India, Indonesia, Tanzania and Sri Lanka and is a self-pollinated crop. A study conducted in the Southern Western Ghats of India identified phenotypic variations in the clustering of clove flower buds. Four clove accessions (Acc.1, Acc.3, Acc.5 and Acc.7) that showed superior yield and variation in floral characteristics were selected and DNA was isolated from the floral tissue using the CTAB method. Random Amplified Polymorphic DNA (RAPD) analysis using Operon primers (OPB 01 to OPB 10) detected polymorphism among the accessions, with OPB-01 showing the highest Polymorphic Information Content (PIC), followed by OPB-04 and OPB-06. Similarity coefficients were calculated based on the presence or absence of polymorphic bands, with coefficients ranging from 0.47 to 0.72. The resulting phylogenetic tree classified the accessions into two main groups based on their bud clustering habit (branching): branching (Acc. 1 and Acc. 5) and non branching (Acc. 3 and Acc. 7). Acc. 3 showed distinct separation from the other genotypes at a coefficient of 0.47, while Acc. 7 separated from Acc. 1 and Acc. 5 at a coefficient of 0.60. Acc. 5 appeared genetically distinct, as it showed separation from the other accessions based on RAPD analysis. The distinctiveness of Acc.5 was further confirmed through 18S rRNA sequencing, suggesting potential intra-species genomic variations among the four clove phenotypes and hinting at the possibility of cross pollination.
Dissection of genetic variation and evaluation of yield and key agriculturally important traits in Barnyard millet (Echinochloa frumentaceae (Roxb.) Link) under typical sodicity stress
Authors: Muruganantham S , Sakthivel Kannabiran , Vanniarajan Chockalingam , Jeyaprakash Paramasiwam , Ramesh Thanakkan , Geethanjali Sadayandi , Periasamy Satheeshkumar , Rathika Selvaraj , Annamalai Anandan
Published: December 2024

Barnyard millet, a climate-resilient small millet, is a valuable feed source for both livestock and humans. Sodicity is an increasingly important soil stress under changing climatic conditions. The present investigation comprised 74 germplasm and three check varieties MDU1, CO(KV)2 and ATL1 evaluated under sodic soil using Augmented Complete Block Design. The analysis of variance revealed the presence of significant differences among the genotypes for all seventeen traits. Genetic variability estimates, such as PCV, GCV, heritability and genetic advance, were high for all the traits except days to maturity. This suggests that these traits are governed by additive gene action, which favours the effective selection of these traits. Association analysis revealed that flag leaf length, days to maturity and single-ear head weight showed significant and positive associations with single plant yield. Therefore, the selection of these traits can improve the yield of barnyard millet under sodic soil. The principal component analysis (PCA) revealed that five significant principal components explained 70.19% of the total variation, with the first two principal components attributed to 48.99% of variation which are majorly attributed to days to 50% flowering, days to maturity, flag leaf length, plant height, single-ear head weight, number of racemes per panicle and number of tillers. Hierarchical cluster analysis grouped the genotypes into five clusters with the accessions in cluster I exhibiting high tillering ability and yield potential. Therefore, the accessions in cluster I can be utilized as parents in the hybridization programme for enhancing the yield of barnyard millet.
AJET and the shifting dynamics of educational technology publishing in 2024
Authors: Corrin Linda , Han Feifei , Deneen Chris , Huijser Henk
Published: December 2024

In this end of year reflection on AJET in 2024, the editorial team consider the achievements of the journal and the changing academic publishing environment in which it operates. We profile two publications that the AJET Lead Editors contributed to this year that address the shifting dynamics of educational technology publishing and what these mean for AJET. These include issues such as the increasing number of journals in the field, the costs associated with academic publishing, engagement in the peer review process, the emergence of generative artificial intelligence, and the ethics and integrity of educational technology research and publication. This is followed by an exploration of the journal’s bibliometrics for 2024. We end with a look at the future directions for AJET as we move into our 40th year of publication.
Richard Pomahač, Artificial Public Administration – Myth or Reality? (Sztuczna administracja publiczna – mit czy rzeczywistość?), „Acta Universitatis Carolinae – Iuridica” 2024, vol. 70, no. 2
Authors: Dąbrowski Karol
Published: December 2024

Richard Pomahač, Artificial Public Administration – Myth or Reality? (Sztuczna administracja publiczna – mit czy rzeczywistość?),„Acta Universitatis Carolinae – Iuridica” 2024, vol. 70, no. 2, s. 133–143, https://doi.org/10.14712/23366478.2024.27
Why is the modified wedge-opening-loaded test inadequate for characterizing gaseous hydrogen embrittlement in pipeline steels? A review
Authors: Kappes Mariano A. , Palmerio Diego , Guerrina Jorge , Pérez Teresa E.
Published: December 2024

International hydrogen pipeline code ASME B31.12 requires the measurement of hydrogen affected fracture toughness using constant load or displacement tests standardized in ASTM E1681. The modified wedge-opening-loaded (WOL) specimen is loaded with a bolt that sets a constant crack mouth opening displacement and the initial stress intensity factor (KIapp). In this review paper, the sizing restrictions imposed by the testing procedures are analyzed considering the strength, wall thickness, diameter and toughness of existing and commercially available pipelines. The conclusion is that specimens with the standard geometry for constant displacement test in ASTM E1681 cannot be extracted from most used pipelines. The equations proposed in standards to calculate KIapp as a function of crack mouth opening displacement cannot be applied and particular expressions must be calculated case by case. Furthermore, loading the specimen to the required KIapp results in exceedingly large normal stresses in the bolt, increasing the risk of fracture of the bolt during loading of the specimen. Additionally, literature results of pipeline stees tested with the constant displacement in gaseous hydrogen are discussed and their significance is analyzed considering the material performance measured under rising displacement tests in gaseous hydrogen.
Diagnostic errors in patients admitted directly from new outpatient visits
Authors: Watanabe Yu , Miyagami Taiju , Shimizu Taro , Nishizaki Yuji , Ukishima Sho , Santo Koichiro , Furusaka Kushiro Seiko , Aoki Nozomi , Suzuki Mayu , Kanazawa Akio , Naito Toshio
Published: December 2024

Objectives

Diagnostic errors frequently represent significant adverse events that can occur in any medical setting, particularly in rushed handovers and constrained timing. Cases that result in emergency hospitalization at the time of the initial outpatient visit are more likely to have complex or serious patient conditions and more detrimental diagnostic errors. Our study investigated diagnostic errors in these under reported situations.

Methods

We conducted a retrospective study using electronic medical record data on patients who were directly admitted to a newly established outpatient clinic at a single university hospital in Japan. Diagnostic errors were assessed independently by two physicians using the Revised Safer Dx instrument. We analyzed patient demographics, symptoms, referrals, and resident doctor (postgraduate-year-1) involvement using logistic regression to compare groups with and without diagnostic error. Additionally, we employed the Diagnostic Error Evaluation and Research (DEER) taxonomy and Generic Diagnostic Pitfalls (GDP) to examine the factors associated with diagnostic errors.

Results

The study included 321 patients, with diagnostic errors identified in 39 cases (12.1 %). Factors contributing to diagnostic errors included the involvement of young residents, male patients, the number of symptoms, and atypical presentation. The most common causes of diagnostic errors were “too much weight given to competing/coexisting diagnosis” as indicated by DEER and “atypical presentation” by GDP.

Conclusions

The frequency of diagnostic errors in this study was higher than those in previous studies of new outpatient visits, underscoring the imperative for heightened scrutiny in cases involving medical residents especially when patients present with multiple or atypical symptoms. This vigilance is crucial to mitigating the risk of diagnostic inaccuracies in these settings. Cases that result in emergency hospitalization at the time of the initial outpatient visit are more likely to have complex or serious patient conditions and more detrimental diagnostic errors.
Theoretical – experimental investigation of performance enhancement of a PV system using evaporative cooling
Authors: Amr Ayman Abdel-Raheim , Hassan Ali A. M. , Abdel-Salam Mazen , El-Sayed Abou Hashema M.
Published: December 2024

Evaporative cooling technique is considered one of the effective methods for improving efficiency and power generation of a photovoltaic (PV) module by reducing the operating temperature of its surface. In this paper a theoretical study of heat transfer through a PV module was conducted to investigate how the calculated cell temperature and module efficiency are influenced by the ambient temperature, solar irradiation, and water flow rate, which affect the heating and cooling rates of the module surface. Experimental investigation was done to confirm the theoretical findings concerning the decrease of cell temperature and hence the increase of module efficiency with the increase of either the air flow on module cooling by using sprinkler for water misting or the mass flow of water on module cooling by using nozzles for making a water film over the module surface. The experimental results show a reduction of 26.94 % in cell temperature on using sprinkler against 28.32 % for nozzles with continuous cooling and 24.14 % using sprinkler against 26.75 % for nozzles with intermittent cooling. Experimental results show that evaporative cooling on using sprinkler and nozzles methods increase the electrical efficiency from 13.04 % without cooling to 14.5 % and 14.75 with continuous cooling against increase of the electrical efficiency to 14.29 and 14.7 with intermittent cooling. The maximum electrical efficiency in the datasheet at standard condition records 15.4 %. This means that the evaporative cooling over the PV module strongly improves the system performance to approach its efficiency at standard test condition STC. There is no significant difference between continuous and intermittent cooling in reducing the cell temperature and thus increasing efficiency. Moreover, intermittent cooling reduces the amount of water used for cooling.
A review on extended special and general theory of relativity for superluminal particles and their cosmological applications
Authors: Srivastava Vivek Kumar , Verma Alok Kumar , Vaish Garima , Upadhyay Sudhaker
Published: December 2024

In the context of superluminal physics, this article explores the latest advancements including the primary theoretical developments in special and general theory of relativity (STR & GTR). We have reviewed the significant strides made so far and addressed the difficulties encountered with purported interpretation. The proposed or derived transformation factors for superluminal particles can be categorized into two categories, i.e., imaginary and real transformation factors. The transformation relations between the two classes of frames have been scrutinized using the metric expressions. The velocity addition and transformation relations of mass, momentum, and energy between the frames for superluminal particles have also been analyzed. The analyses using Klein–Gordon equation, which is the relativistic energy-momentum equation, for tachyons have been performed. In brane–antibrane system, universality of tachyon potential via tachyon condensation was articulated. The unstable brane system, by virtue of tachyon condensation, promotes the cosmological evidence. In advancing the pace of development of cosmological research, superluminal physics is one of the most astonishing fields. Approaching toward GTR for cosmological application, tachyons have been scrutinized in Schwarzschild, Kerr–Newman, and FLRW metric spaces. Tachyons in Friedman universe correspond to different applications, like measurements of Hubble’s constant, theory of big-bang, expansion of universe. Some of the experimental evidences provided by GRS 1915+105, SN 1987A, GRB 030329, GW 170817, etc., for the existence of tachyons have also been analyzed. Einstein’s postulate for the constancy of the speed of light has been commented on for the highest approachable speed observed by the particular observer.
Teacher’s Practice Regarding Cardiopulmonary Resuscitation at Basic Schools in Erbil City
Authors:   Department of Nursing, College of Nursing, Hawler Medical University, Erbil, Iraq., Alhagbaker Jawdat , Aziz Kareem ,   Department of Nursing, College of Nursing, Hawler Medical University, Erbil, Iraq.
Published: December 2024

Background and objectives: Every day, either by accident or illness, there are numerous situations in which the safety of individuals, families or communities is endangered. >2000 children worldwide die every day as a result of unintentional injuries. The majority of risks influencing a cardiac arrest in a school are related to physical activity, such as participating in sports or having an airway obstruction or trauma event. In the United States and Europe, one million people experience cardiac arrests annually. The aim of this study was to assess the basic school teachers’ practices regarding cardiopulmonary resuscitation at basic schools in Erbil City.
Methods: A cross-sectional study was carried out. To assess the practices of basic school teachers regarding cardiopulmonary resuscitation. The study was conducted from January 20, 2021 to May 15, 2022. This study was conducted in basic schools in Erbil city according to six municipalities. The sample size was 470 teachers. The observational checklist technique was used to assess cardiopulmonary resuscitation performance.
Results: The majority of them were female (74%), more than half of them have a diploma (52.3%), the majority of age group were between 37-48 years old which represents 51%, the mean age was (43.85±8.27), most of the teachers were married (86.4%), the majority of them did not a training course (86.4%). Several teachers use tradition at media (9.6%) and social media (44.7). A lot of barriers were faced teachers to prevent participation in training courses were not found in professional training course The majority of the schoolteachers had poor levels of practice (51.1%) regarding the performance of cardiopulmonary resuscitation.
Conclusion: The majority of schoolteachers had poor levels of practice regarding cardio-pulmonary resuscitation. There was a significant association between the performance of CPR and some socio-demographic variables like age group, gender, years of experience, and desire to attend CPR training course.
Driving factors of CO2 emissions in southeast China: Comparative study of long-term trends, short-term fluctuations, and spatial variations
Authors: Huang Yimin , Lin Weisheng , Wang Yuan , Luo Huafang , Zhu Lin , He Yanmin , Wang Feng , Lai Wen-ting , Shi Rui
Published: December 2024

This study explores the factors driving CO2 emissions related to energy use in Fujian Province from 2000 to 2019, with an emphasis on long-term trends, short-term fluctuations, and spatial disparities. Utilizing annual data on CO2 emissions and various influencing factors from multiple cities within Fujian Province, we examine the factors driving long-term changes in CO2 emissions. To analyze short-term emission trajectories, we employ a temporal decomposition model, while spatial decomposition techniques are used to assess the variability in emission drivers across 9 prefecture-level cities over different years. Our findings reveal an inverted U-shaped relationship between CO2 emissions and urbanization over the 20-year study period. Furthermore, short-term fluctuations indicate a gradual reduction in the impact of urbanization on the increase in CO2 emissions within the industrial, transportation, and household sectors in Fujian Province. Additionally, economic development, measured as per capita gross domestic product, is shown to significantly influence CO2 emissions. Efforts to reduce energy intensity, which refers to the amount of energy consumed per unit of economic output, in both the industrial and household sectors are identified as potential strategies for emission reduction. The variability in CO2 emissions among cities is primarily attributed to differences in energy intensity and population sizes. These insights are critical for formulating policies aimed at promoting low-carbon development, reducing carbon emissions, and enhancing sustainability throughout Fujian Province.
Seasonal sea ice of Foxe Basin, Canada: Spatial and temporal evolution, 1971–2018
Authors: Kowal Slawomir , Gough William A. , Butler Kenneth
Published: December 2024

The Hudson Bay System of the Canadian Arctic includes Hudson Bay, Hudson Strait and Foxe Basin, with Foxe Basin being the least studied from a climatological perspective. We examined the temporal and spatial variation of seasonal sea ice in Foxe Basin, using time series and spatial clustering analyses. For the period of 1971 to 2018, time series of sea-ice breakup and freeze-up dates and ice-free season length at 24 grid points were generated from sea-ice charts. The temporal analyses indicated a spatially nuanced response to a warming climate with statistically significant earlier breakup dates, later freeze-up dates and longer ice-free seasons, consistent with previous work. Freeze-up dates and ice-free season length correlated strongly with coincident air temperatures. This link was weaker for breakup dates, as also found in nearby Hudson Bay and Hudson Strait, and likely reflects dependence on antecedent sea-ice and ocean temperature conditions. The spatial analysis revealed patterns in sea-ice behaviour consistent with the ocean flow regime in the basin and the presence of polynyas along its west coast. The spatial clustering was not as predictably coherent as in Hudson Bay and Hudson Strait, which does not bode well for navigation in this region.