bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of temperature and nanoparticle size on the interfacial layer thickness of TiO2–water nanofluids using molecular dynamics
Authors: Huang Xiaoyan , Zhang Xiaohui , Qing Shan
Published: November 2024

In the design and optimization of nanofluids, it is crucial to investigate and characterize the thermal conductivity enhancement mechanisms and their influencing factors. Although the effect of the “liquid film” on the thermal conductivity of the solid–liquid interface in nanofluids has been extensively studied, most of the research in this area has examined metal–water nanofluids or Ar-based nanofluids. In this work, non-equilibrium molecular dynamics is utilized to explore the mechanism of thermal conductivity enhancement in TiO2–water nanofluids. It is noted that a distinct interfacial layer is formed within 5 Å from the nanoparticle surface. As the nanoparticle size increases, the number density also increases, resulting in a corresponding increase in the thermal conductivity. Moreover, adding 1% TiO2 nanoparticles to water leads to an increase in thermal conductivity of 1.5–3%. Notably, the interfacial layer thickness remains relatively constant with the change in temperature. The Materials Studio analysis results indicated that the water molecule will have stable chemisorption on the titanium dioxide surface with an adsorption energy of approximately −0.96 eV. The findings of this study offer new insights and useful information to support the selection of nanomaterials for the preparation of convective systems.
Advancements in surface treatments for aluminum alloys in sports equipment
Authors: Chen Shaozhou
Published: November 2024

This review examines recent advancements in surface treatment technologies for aluminum alloys used in sports equipment. We discuss conventional methods like chemical conversion coatings and anodizing, as well as emerging techniques such as plasma electrolytic oxidation, physical vapor deposition, and laser surface modification. The replacement of toxic hexavalent chromium with eco-friendly alternatives is highlighted as a key development. We also explore the potential of smart, self-healing coatings to extend equipment lifespan. Our analysis reveals that while significant progress has been made in enhancing corrosion resistance and mechanical properties, challenges remain in scaling up advanced treatments for industrial implementation. The review concludes that continued innovation in surface treatments will be crucial for improving the performance, safety, and sustainability of aluminum alloys in sports applications, ultimately benefiting athletes and manufacturers alike.
Marie Pujmanovás Novelle Die Patientin von Doktor Hegel (1931) als Beitrag zur Geschlechterdebatte der Zwischenkriegszeit
Authors: Marková Jana
Published: November 2024

In the democratic society of interwar Czechoslovakia, there was a lively discussion about women’s emancipation and the accompanying changes in the gender order. The modernist romance Pacientka dra Hegla [Doctor Hegel’s patient] (1931) by the Czech journalist and writer Marie Pujmanová (1893‒1958) occupies a liberal position in the debate. In the story of a young woman who gives up her plans to marry in favour of a relationship outside wedlock, issues such as female sexual liberation, abortion and free motherhood are topicalised. The article highlights the connections between the romance and gender discourses of the time and examines the ideological stance of the text. Special attention is paid to the stereotyping of the four main characters, who all represent certain concepts of personal identity that were very popular in the 1920 s.
On the patterning of sound imitation by onomatopoeia in Slovak
Authors: Körtvélyessy Lívia
Published: November 2024

This paper presents an experiment with onomatopoeia formation. Fifty-one Slovak participants were asked to imitate ten sound events of various frequencies by writing down onomatopoeic words using the letters of the Slovak alphabet. The purpose of the experiment was to examine the role of image iconicity in producing new onomatopoeias. Image iconicity is expected to be manifested in the participants’ agreement on the form of the proposed onomatopoeias and, therefore, in the possibility of establishing onomatopoeic patterns. The pattern structure was determined by the realization of five characteristics: initial position, final position, transition, lengthening, and repetition. In addition, the established patterns make it possible to examine the role of sound-symbolism, particularly phonesthemes in the formation of onomatopoeias.
„Das Hoffen lernen“
Authors: Novkovic Dominik
Published: November 2024

Angesichts der periodisch variierenden Aufmerksamkeit für die distinkten Formen devianten Verhaltens im Kindes- und Jugendalter weist die Sozialpädagogik in ihren praktischen Interventionsverfahren und Deutungsmustern ein gravierendes Defizit an theoretischer und methodologischer Fundierung auf. Insbesondere die penetrante Expansion psychotherapeutisch-biologistisch-organpathologischer Diagnosemuster in Kombination mit einem pharmalogischen Behandlungsrepertoire wird problematisiert. Kontrastiert wird die bildungs- und gesellschaftstheoretische Abstinenz Sozialer Arbeit/Sozialpädagogik durch die in Ernst Blochs dialektisch-materialistischer «Philosophie des Neuen» angelegte genetische Erkenntnismethodik, die es ermöglicht, Devianz als gesellschaftliches Verhältnis zu problematisieren und dem Leidensdruck konkreter Individuen in einem durch Verteilungskonflikte und (vertikale) soziale Ungleichheit strukturierten Klassensystem gerecht zu werden. Der Beitrag zielt dabei auf eine sozialpädagogische Relektüre der Theoriekonzeption von Ernst Bloch. Die (theorie-)systematische Neuverortung und Einbeziehung seiner Überlegungen in den Kontext der jüngeren ideologischen und fachpolitischen Auseinandersetzung mit dem Devianzphänomen eröffnet einen kritischen Verstehensprozess. Im Horizont der Bloch´schen „Philosophie des Neuen“ wird ein sozialwissenschaftliches Forschungsdesign skizziert, welches für die Ausbruchs- und Artikulationsversuche vulnerabler kindlicher Subjekte sensibilisiert und damit für ein tiefergehendes Verständnis von Devianz unentbehrlich ist. Darüber hinaus soll gezeigt werden, dass die dem Bloch´schen Denkansatz inhärente hermeneutische Vorgehensweise neue Sozialbildungen im Sinne einer Emanzipatorik des Neuen erschließt. Abschließend wird in Anlehnung an das Denken Ernst Blochs ein Vorschlag für eine Sozialpädagogik der Hoffnung im Kontext der Devianzthematik unterbreitet.
Krisenerfahrung, Hoffnung und der utopische Raum transformatorischer Bildung
Authors: Eppenstein Thomas
Published: November 2024

Im Anschluss an das Konzept transformatorischer Bildung werden Chancen und Limitationen von Krisenerfahrungen in Hinblick auf Veränderungen des Bildungsgeschehens und des jeweiligen Selbst- und Weltverständnisses im Spannungsverhältnis von Hoffnung, konkreter Utopie (Ernst Bloch) und Sinnlosigkeit (Jean Améry) reflektiert. Ob eine Rezeption des Bloch’schen Verständnisses von ‚Hoffnung‘ als Referenz für eine auf Veränderung ausgerichtete Bildungsphilosophie und Bildungspraxis tauglich ist, bleibt am Ende kontingent; Mit den Reflexionen Jean Améry‘s über die Stellung des Intellektuellen in Auschwitz wird an ein Szenario erinnert, in dem Bildung zu etwas ganz und gar Irrealem wird. Daraus resultiert eine Absage an idealistische Bildungskonzeptionen und zugleich die Begründung für Bildungsanstrengungen, sinnlose Krisenerfahrungen, die stattgefunden haben, zu erinnern und im kulturellen Gedächtnis zu verankern.
Mathematical modeling for the potential energy of the aminophenol derivative azomethine molecule via Bezier surfaces and fuzzy inference system
Authors: Ermiş Temel
Published: November 2024

In this study, we have managed to model the energy surface of the aminophenol derivative azomethine molecule mathematically depending on two torsion angles SC1(C9C10C12N14) and SC2(C2C1C6C11). For this purpose, firstly, discrete data obtained from Density Functional Theory calculations have been converted into continuous data with the help of the Fuzzy Inference System. Thus, it is possible to calculate energy values for untested data, which are very costly in terms of time to obtain with other methods/experiments. Then, the continuous and non-smooth surface obtained from the fuzzy inference system and representing the energy values of the molecule has been transformed into a differentiable surface with the help of Bezier surfaces. Thus, an objective function has been obtained in which global optimization methods based on the derivative (or gradient) operator could be used.
A Systematic Review and Meta-Analysis Assessing the Accuracy of Blood Biomarkers for the Diagnosis of Ischemic Stroke in Adult and Elderly Populations
Authors: Ruksakulpiwat Suebsarn , Zhou Wendie , Phianhasin Lalipat , Benjasirisan Chitchanok , Su Tingyu , Aldossary Heba M. , Kudlowitz Aaron , Challa Abhilash K. , Li Jingshu , Praditukrit Kulsatree
Published: November 2024

This study aims to elucidate the methodology and compare the accuracy of different blood biomarkers for diagnosing ischemic stroke (IS). We reviewed 29 articles retrieved from PubMed, MEDLINE, Web of Science, and CINAHL Plus with Full Text. Among these, 23 articles involving 3,494 participants were suitable for meta-analysis. The pooled area under the curve (AUC) of all studies for meta-analysis was 0.89. The pooled sensitivity and specificity were 0.76 (0.74–0.78) and 0.84 (0.83–0.86), respectively. Blood biomarkers from noninpatient settings demonstrated better diagnostic performance than those in inpatient settings (AUC 0.91 vs 0.88). Smaller sample sizes (<100) showed better performance than larger ones (≥100; AUC 0.92 vs 0.86). Blood biomarkers from acute IS (AIS) patients showed higher diagnostic values than those from IS and other stroke types (AUC 0.91 vs 0.87). The diagnostic performance of multiple blood biomarkers was superior to that of a single biomarker (AUC 0.91 vs 0.88). The diagnostic value of blood biomarkers from Caucasians was higher than that from Asians and Africans (AUC 0.90 vs 0.89, 0.75). Blood biomarkers from those with comorbidities (AUC 0.92) showed a better diagnostic performance than those not reporting comorbidities (AUC 0.84). All the subgroups analyzed, including setting, sample size, target IS population, blood biomarker profiling, ethnicity, and comorbidities could lead to heterogeneity. Blood biomarkers have demonstrated sufficient diagnostic accuracy for diagnosing IS and hold promise for integration into routine clinical practice. However, further research is recommended to refine the optimal model for utilizing blood biomarkers in IS diagnosis.
Phonological Process of Word-Final Consonant Sounds in Indonesian Learners by Japanese Speakers (Case Study of Japanesia Online Course Students)
Authors: Mariah anggreni  , Subiyanto Agus
Published: November 2024

This study aims to analyze the phonological processes and contributing factors affecting the pronunciation of final consonant sounds by native Japanese speakers learning Indonesian. The research employs the theory of generative transformational phonology, using distinctive features to address the research questions. A qualitative descriptive approach was adopted, utilizing data from the Japanesia course's online class videos on YouTube, collected through observation and note-taking techniques. The analysis identifies three main phonological processes in Japanese learners' pronunciation of Indonesian final consonants: sound substitution (e.g., [n] to [ŋ] and [l] to [r]), elision of [h], and addition of sounds such as [u] following [r] and [s], as well as aspirated [h] after [t] and [k]. These phonological adjustments reflect the absence of certain Indonesian sounds in Japanese, prompting learners to adapt pronunciations to their native phonological system. Furthermore, the Japanese language’s predominant open syllable structure (CVCV) generally excludes word-final consonants aside from nasals, contributing to these adaptations.
Project-Based Learning (PjBL) Mini Drama to Enhance Motivation and Japanese Communication Skills of Tourism Students
Authors: Farisya Ghaida , Via Luviana Dewanty  , Hafizahra Firyalhasya Aida Rahadiyan
Published: November 2024

This study discusses how the project-based learning (PBL) method in the form of mini-drama, can improve oral Japanese communication skills and understanding of Japanese culture in the tourism study program at Garut University. The theme of the mini drama chosen was the differences in the habits of Japanese and Indonesian tourists in the context of hospitality. The mini drama was performed in an annual event organized by the tourism study program. The mini drama is 25 minutes long with three different story segments and conflicts. This study used a qualitative approach to measure the improvement of Japanese speaking ability as well as students' perceptions of the application of learning methods. The results showed that the PBL method applied can improve the Japanese oral communication skills of tourism study program students, especially communication using respectful language varieties (keigo) and formal language varieties (teineigo). Students also gave positive responses to the application of the PBL method because it was considered to increase learning motivation, self-confidence, better understanding of the socio-culture of Japanese society, and the ability to collaborate with students from various levels. This study provides implications for curriculum development and Japanese language learning methods in tourism study programs, as well as contributing to research on the effectiveness of the PBL method in Japanese language learning.
miRNA-novel-216 regulated fatty acid composition and progesterone synthesis in goat granulosa cells by targeting the TPD52
Authors: Jia Yuhang , Xu Qiao , Wang Peng , Liu Ziyi , Zhang Runan , Liu Kai , Ling Yinghui , Liu Yufang , Chu Mingxing
Published: November 2024

In brief

Steroid hormone secretion by granulosa cells in the ovary is regulated by lipid synthesis and metabolism. This study found that miR-novel-216 affects granulosa cell proliferation and free fatty acid content by regulating TPD52 expression, thereby increasing the reproductive hormone secretion and promoting polytocous trait in goats.

Granulosa cells in the ovaries of livestock are crucial for secreting steroid hormones that regulate follicular development, with lipid synthesis and metabolism playing key roles in this process. The molecular mechanisms behind steroid hormone secretion regulated by fatty acid metabolism in goat granulosa cells have been unclear. Our previous transcriptome analysis of Yunshang black goat ovaries revealed that miR-novel-216, which had lower expression in high-fertility goats, might regulate granulosa cell function. We further investigated the role of miR-novel-216 by isolating and culturing goat granulosa cells in vitro and found that it inhibits cell proliferation, lipid accumulation and progesterone synthesis in goat granulosa cells. The qTar and miRanda analyses predicted TPD52 as a target of miR-novel-216, confirmed by dual luciferase and transfection assays. Previous studies have shown that progesterone synthesis in granulosa cells is closely related to free fatty acid composition. We investigated the effect of in vitro construction of TPD52 overexpression and interference plasmids on the free fatty acid content of goat granulosa cells using mass spectrometry sequencing. The results showed that the overexpression of TPD52 in goat granulosa cells significantly increased the free fatty acid content and promoted granulosa cell proliferation, lipid accumulation and progesterone synthesis, whereas the opposite was true for inhibition of TPD52. It was shown that miR-novel-216 affects granulosa cell proliferation and free fatty acid levels by regulating the expression of TPD52, which increases reproductive hormone secretion and promotes polytocous trait in goats. This provides a foundation for developing breeding strategies to improve goat fertility.
La edición científica marcada por el XML JATS: des(encuentros) entre Markup y Marcalyc
Authors: Domínguez-Gómez Lizeth
Published: November 2024

Este artículo analiza, desde la experiencia de uso, dos herramientas de marcación XML JATS para artículos científicos: Markup de SciELO y Marcalyc de Redalyc. El objetivo es mostrar las diferencias o similitudes en cada uno de estos desarrollos tecnológicos. Para ello, se realiza un análisis comparativo que contempla cuatro ejes de reflexión: 1) la concepción de la herramienta, 2) la metodología aplicada, 3) las comunidades o entidades usuarias y 4) sus implicaciones. Se concluye que la tarea de marcaje está determinada por herramientas tecnológicas que obedecen a distintas lógicas y modelos de comunicación de la ciencia. La contribución del texto recae en develar la importancia de recuperar el sentido del XML JATS como un lenguaje estándar e interoperable que permita el diálogo entre los sistemas de información sin duplicar el esfuerzo y el trabajo editorial de revistas científicas en la región latinoamericana.
Territorios periurbanos marginados vulnerables a fenómenos naturales y su análisis cartográfico, México
Authors: Rivera González Oscar Daniel , Rodríguez Van Gort Mary Frances Teresa
Published: November 2024

El siguiente proyecto de investigación pretende evidenciar por medio de cartografía problemáticas sobre la presencia de habitantes establecidos en zonas periurbanas marginadas de alto riesgo ante diversos acontecimientos naturales, lo anterior, es incentivado en gran medida por la segregación socio-espacial e indiferencia del aparato gubernamental mexicano sismos, inundaciones, deslizamientos de tierra, colapso de techos de minas, entre otros, mismos que hacen más vulnerable a este tipo de población que se establece en zonas no aptas para la habitabilidad debido a las características geográficas del sitio, ejemplificando con barrancas, perímetros de inundación, zonas minadas y Áreas Naturales Protegidas (ANP). Lo anterior es evidenciado con muestras de problemáticas acontecidas recientemente en Michoacán, Ciudad de México (CDMX) y Estado de México (EDOMEX), los anteriores lugares son las escalas de trabajo del presente análisis, identificados desde la geografía, puntualizando que el espacio geográfico y la naturaleza no siempre está limitada a una sola escala de trabajo. Es urgente realizar planes de reestructuración urbana debidamente gestionados en ciertos Estados de la República Mexicana; instaurando en la población la concientización, sensibilización y reflexión, con el objetivo de evitar crecimiento en áreas periurbanas, deteniendo paulatinamente el riesgo y por ende impedir con mecanismos de protección civil pérdidas de vidas humanas. Así mismo, implantar conexión directa en áreas periurbanas, fomentando en todo momento reforestación, reparación, recuperación de ANP, reconfiguración de áreas en riesgo alto e incorporación al ámbito rural o urbano territorios periurbanos según sus características geográficas.
¿Es posible la conciliación?, una mirada a la Delimitación de Unidades Político Administrativas Intradepartamentales: caso Municipio Nazacara de Pacajes y su colindante Municipio de Caquiaviri
Authors: Calla Marin Cindy Gabriela
Published: November 2024

El presente trabajo busca dar una mirada al conflicto de límites en las unidades territoriales intradepartamentales, la normativa que ayuda a resolver los conflictos limítrofes y las dificultades que se presentan. Con el objeto de responder la pregunta principal del presente trabajo ¿es posible la conciliación?, para ello se consideró, como caso de estudio el procedimiento de conciliación administrativa intradepartamental entre los municipios de Nazacara de Pacajes y Caquiaviri.
Mariátegui en (la Biblioteca Nacional de) México. Guía para un nuevo modelo de sistematización de la obra del amauta desde la bibliología del Sur
Authors: Lèal Alfredo
Published: November 2024

Debido a su prolijidad, pero también a su complejidad, uno de los principales problemas que plantea la obra de José Carlos Mariátegui es el de su asistematización. ¿Cómo enfrentarse a una producción tan marcadamente heterogénea? Contrario a los intentos que, desde la filología, tradicionalmente ha emprendido la crítica mariateguiana, en el presente trabajo proponemos que es mediante un análisis bibliológico que se puede sistematizar la obra de Mariátegui, fundamentalmente porque nos enfrentamos a una obra publicada casi en su totalidad. Ello implica, pues, no sólo atender los contenidos sino también la materialidad de los libros. Estableciendo como corpus aquellas obras del amauta que se encuentran en el acervo de la Biblioteca Nacional de México, plantearemos un recorrido para una obra que, desde esta sistematización, deviene en ejemplo de la sociología de la literatura en América Latina.
De los cuerpos sometidos al silencio: Violencia cultural del género sobre cuerpos masculinos
Authors: Muñoz Mejía Juan David
Published: November 2024

The article addresses gender violence, specifically from male bodies. With this, we try to understand how the patriarchal system exerts cultural violence on men through a moral pressure based on not breaking the social norms of gender. Likewise, it is analyzed how punishment, translated into direct violence, is exhibited as a method that legitimizes the violence exerted by male bodies, which approves the gender stereotypes that classify men as an aggressive subject by nature and shows physical violence. as an appropriate means to resolve conflicts. Thus, men are prohibited from showing their emotions, among other consequences, so as not to be excluded from the system. The importance of studying that cultural violence resides in the fact that it is an unnoticed subject and, therefore, silences the bodies that suffer it.
Reseña del libro: Vivir adentro y en contra. Colonialidad y descolonialidad del poder, 2022
Authors: Germaná César
Published: November 2024

Of the various issues raised by reading the book, two that are considered fundamental are examined: first, the problem of exposition, that is, the way in which Quijano presents the examination of complex problems; secondly, the exploration of the treatment of the problem of the decoloniality of power. The comment is concluded by pointing out Quijano’s interest in “the reconstitution of a Latin American problems”.
Uso del Kikuyo (Pennisetum Clandestinum L), residuo de la poda de áreas verdes para la obtención de ácido piroleñoso con fines agropecuarios
Authors: Burbano-Salas Diego
Published: November 2024

The large volumes of biomass generated in the maintenance of green areas are considered a focal point for the production of organic waste. In the present work, it is proposed to obtain piroleñoso acid from the precursor Pennisetum Clandestinum L (kikuyo), a very common waste product of pruning and gardening; Describes the thermochemical process for the validation of the technology for the production of the product and utilizable byproducts (coal and tar) and the evaluation of the macro elements and the structural components of the substance by means of the Fourier Transform Infrared Spectrometry (FTIR) method. (Fourier transform infrared spectroscopy), by a direct comparison, it is shown that its properties are similar to the product from Bamboo (Phyllostachys pubescense f) which has characteristics that can increase root growth in vegetables, in farm animals improves the digestibility of Nutrients and reduces harmful intestinal coliforms. The results obtained describe a yield of between 20 and 30% for the gases with a maximum delivered energy that oscillates between 150 and 1000 kcal.
Los espacios naturales y la ciudad, una aproximación desde la infraestructura ecológica en el entorno de las ciudades de Chincha, Pisco e Ica
Authors: Medina Tarrillo Gilmer , Tinoco Gómez Oscar Rafael
Published: November 2024

There is currently a growing interest in the natural spaces located on the periphery of cities, due to the environmental, social and economic benefits that they provide to citizens. This paper aims to evaluate the relationship between natural spaces and territorial planning instruments, considering the theoretical and methodological contributions developed from the ecological infrastructure.The methodology combines qualitative and quantitative tools, the qualitative were used for the analysis of the types and levels of use and also the natural spaces degradation, in addition, to determine the relevance of territorial planning instruments and the incorporation of the natural spaces in these. The quantitative variables were used to measure the relationship between variables, using a binary logistic regression. A total of 29 natural spaces and 13 planning instruments were registered and analyzed, the results explain qualitatively and quantitatively the poor incorporation of natural spaces in the planning instruments.
Modelo cartográfico para determinar áreas óptimas para la expansión urbana del distrito de Huánuco como aporte para la planificación
Authors: Javier Silva Luz Alexandra , Alcántara Boza Francisco Alejandro
Published: November 2024

The investigation was based on the analysis of the association of the space-time component using the Geographic Information Systems with associated information (graphic-tabular), allowing the application of spatial calculations, through the hierarchical analytical process; obtaining numerical answers, and resulting in 06 areas, by means of a selection model; that meet the conditions for population settlement, taking into account the interaction of the factors: Physical, (Pending, Dangers, Geology, Geomorphology and Rivers) and Socioeconomic (Roads, Airport, Health Centers, Educational Institutions, Tourism and Recreation Areas ) of which; The physical factor is the most influential during the urbanization process as it is a condition for urban growth, increasing vulnerability due to the increase and pressure of urbanization.Concluding, two of the areas selected by the model were classified: “Area 004” and “Area 005” as “Optimums”, which meet the ideal conditions for urban expansion in the Huánuco district as a contribution to planning.
Secuencia volcánica-sedimentaria en el Horizonte “D” de la Formación Condorsinga en Alpamina (Morococha)
Authors: Ircañaupa Acevedo Yber Juan
Published: November 2024

The lithology of the Alpamina area reveals that there was a small micro-basin in the site, the described lithology, analyzed and compared with the model described by J. Terrones (horizon “D”), for the, Morococha district , reveals great changes not only in the sedimentary phase but also in the volcanic phase of regular power (7m), of dacitic composition. This micro-basin that is located in the SE of the Morococha district is important to describe the events that occurred in the great Pucará basin, with its constant transgressions and regressions due to the subsidence processes. Processes that gave origin to very local emersions and submersions as in Alpamina or other regions.This sequence consists of intercalations of dolomites, sandstones and shales with a volcanic rock horizon of dacitic composition, all these strata have a similarity which is their small thickness, some only reach centimeters.
Caracterización de aguas residuales en la industria de empaques de cartón
Authors: Meza-Mansilla Flavia , Malca-Casavilca Nora
Published: November 2024

The aim of this research was to characterize the parameters of the effluent generated in the cleaning process of printing machines, corrugators, rubber preparation reactors as an input for the manufacture of corrugated cardboard packaging, and compare them with the values after the processes coagulation-flocculation in a first stage, the following treatments were electroflotation (EF), electrocoagulation (EC) and gravel and sand filtration beds; For the characterization, the CERPER laboratory carried out the sampling of the waters, measuring in situ the parameters of pH, conductivity and temperature; SST, TDS, COD, BOD, Oils and Fats and Total Metals were measured in the laboratory. The results of the untreated water, the wastewater treated with gravel and sand filters, and the treated wastewater from reverse osmosis are shown in Table 4.
Biol de segunda generación producido mediante fermentación homoláctica del biol de primera generación
Authors: Flores Calderón Elvis H. , Juscamaita Morales Juan , Quipuzco Ushñahua Lawrence
Published: November 2024

The elaboration of Biol II-G was proposed to improve the properties of Biol I-G from cows, coming from a 10 m3 tubular biodigester which registered average values ​​of 7.05 pH and electrical conductivity 5.01 dS/m. For the preparation, lactic fermentation was carried out for a period of 5 days. The parameters that were evaluated in the biol samples were pH, lactic acidity, macronutrients (N, P, K), micronutrients, heavy and microbiological metals. The low pH in the fermentation ensured the elimination of pathogenic microorganisms. The results of the phytotoxicity test determined that the biol diluted to 0.1% contributed to the growth of lettuce.
Reconstrucción y funcionamiento de horno crisol para fundición de chatarra de aluminio en Ayacucho
Authors: Cossio Herrera Luis Alberto , Trejo Espinoza Abrahán Fernando , Davalos Calderon Angel Gustavo , Ortiz Barreto Jorge Alberto
Published: November 2024

The general objective was to rebuild and put into operation the crucible furnace for smelting aluminum scrap at the National University of San Cristóbal de Huamanga – Ayacucho. The specific objectives were to evaluate the stages of the reconstruction regarding the modification of the design and operation of the crucible furnace for the smelting of aluminum scrap. Obtaining objects (finished products) through different molding techniques. Carry out material and energy balances using oil and gas as fuel. The level of research was technological experimental, and the analytical method was comparative. The design was explanatory experimental. 4 tests were carried out using oil as liquid fuel, then gas, thereby improving the aluminum smelting process, with a high recovery percentage. It was implemented with an automated control panel for the use of gas as fuel. Different molding techniques were also experimented with. The material balance, calculations of the kiln load and products, calculation of the fed air and gases leaving the kiln were carried out. It is recommended to continue with other research in the field of transformative metallurgy since one way to reduce aluminum pollution is by recycling it, which is why it is considered a sustainable metal.
Stripping versus extracción del incisivo inferior
Authors: Cabezas Choque Eddy Edwin , Palomeque de la Cruz Wendy , Siacar Bacarreza Carla Soraya , Larrea Eyzaguirre Carla
Published: November 2024

Dental crowding is present in a large percentage of the population. The amount of crowding increases with age and is one of the most common problems in dental practice, especially in the field of orthodontics. Two principal ways to resolve the lower anterior crowding are dental extractions and enamel interproximal reduction. The objective of the present study was to perform a literature review on the effects of applying the enamel interproximal reduction technique in comparison with the lower incisor extraction method for correcting the lower anterior crowding. This literature review involved the analysis of 34 articles published (either in Spanish or English) between 2004 and 2020 from SciELO, PubMed and Google Scholar databases. The most relevant results were the following: the interproximal reduction and the lower incisor extractions are effective in the treatment of class I malocclusions with permanent dentition that present moderate lower anterior crowding. However, more evidence supporting that this is the best treatment option is needed. In conclusion, clinical intervention is an individual-based decision that must consider crowding, dental and oral health, dental characteristics, patient expectations, and the use of articulated models.
Sialoadenitis crónica recurrente de glándula submandibular, reporte de caso y revisión de la literatura
Authors: Jerez Robalino James Philippe , Bahena Martínez Edith , Hernández Cruz Adrián , Vizuete Bolaños Marco Xavier , Prada Vidarte Oskar Eduardo
Published: November 2024

Sialadenitis is defined as an inflammation of the major salivary glands and has multiple etiologies. this article reported the case of a 17-year-old girl treated in the Maxillofacial Surgery service of the “Hospital General la Perla”. The patient presents an increase in volume in the right submandibular region, she reports 5 months of evolution, 12 days of antibiotic/analgesic treatment, and persistent symptoms. The requested tomographic study shows an isodense that suggests increased volume at the right submandibular gland. Due to the correlation between clinical and imaging presentation, chronic sialadenitis is diagnosticated. The patient is prepared to go to the operating room to remove the affected gland. Under general anesthesia, submandibular access, and dissection the submandibulectomy was achieved. The suture by planes is with Vicryl 3-0 and Nylon 5-0. The controls conducted at 7 and 30 days indicate normal healing and evolution, without nervous alterations. That is why is important for the clinician to have complete knowledge of the anatomy and pathology so that he will perform this procedure successfully, reducing the possibility of post-treatment complications.
Tumor odontogénico adenomatoide. Reporte de un caso clínico
Authors: Rosso Guerrero Alondra , Rojas Carrete Luis Ricardo , Barajas Pérez Víctor Hiram , Ortiz Sarabia Gamaliel , Tremillo Maldonado Omar Alejandro , Solís Martinez Luis Javier , Almeda Ojeda Oscar Eduardo
Published: November 2024

The Adenomatoid Odontogenic Tumor (AOT) is an uncommon benign neoplasm, characterized by slow and progressive growth, in most cases asymptomatic. It is an intraosseous pathology, which can be follicular or extrafollicular, with the follicular type being the most common. It occurs in both men and women, with a predilection for the female sex. Histologically, it is composed of odontogenic epithelium organized in different histoarchitectonic patterns, embedded in a stroma of mature fibroconnective tissue. We describe the clinical case of a 25-year-old female patient with increased volume in the left anterior maxillary region, extending to the base of the nose, causing deviation of the midline to the right and having one year of evolution.
Aspectos técnicos de la irradiación y escalas de dolor en casos clínicos con láseres: imperiosa necesidad
Authors: Wilches-Visbal Jorge Homero , Castillo-Pedraza Midian Clara
Published: November 2024

Señor Editor,Hemos leído con gran interés el manuscrito “Láser de baja frecuencia para aftas mayores recurrentes. Caso Clínico” 1 publicado en el No. 3 de 2023 de la revista que usted preside. En este se realiza la descripción clínica del uso de láser de baja potencia como tratamiento para la estomatitis aftosa recurrente en paciente de 11 años con herida dolorosa en lengua que había sido tratado sin éxito mediante abordajes convencionales (antibióticos, antisépticos, vitaminas, entre otros). Notaron que, después de 1 mes, la herida había desaparecido casi por completo; sin embargo, el dolor había comenzado a ceder después de los primeros 7 días de iniciado el tratamiento.
Influencia de los revestimientos dentales en la adaptación marginal e interna de las cofias metálicas. Estudio in vitro
Authors: Rodríguez-Angulo Jhonatan Paúl , Alarco-La Rosa Luis Felipe , Angeldonis-Hurtado Gina Elizabeth , Cruzado-Oliva Fredy Hugo
Published: November 2024

Objective. To evaluate the influence of different brands of dental investments on the marginal and internal adaptation of metal copings. Method. The research was in vitro, analytical, experimental and transversal. For this, 48 metal copings were made, which were cemented on previously carved human teeth, then the copings were cut mesio-distally to evaluate their adaptation. The adaptation was evaluated using a Leica DM6000M stereomicroscope. To determine if there is a difference between marginal and internal adaptation; the analysis of variance, the multiple comparison test and the Duncan test were used. Furthermore, Fisher’s exact test was used to evaluate the total adaptation. Results. The best marginal and internal adaptation of metal copings is presented by the Formula 1 coating (Whipmix), followed by Castorit super C (Dentaurum) and Bellasun (Bego). Conclusion. Dental investments did not show influence on marginal adaptation; however, they did show influence on internal adaptation.
Diagnóstico y tratamiento de extravasación salival asociado a glándulas salivales Blandin-Nuhn: Reporte de caso clínico y revisión de la literatura
Authors: Castilla-Canseco Hernán , Cabrera del Cid María Fernanda , Salgado-Chavarría Fabiola
Published: November 2024

Mucoceles are salivary extravasation lesions associated with rupture of ducts that are generally associated with trauma. They are bluish, translucent in appearance, fluctuating on palpation, expansive and fast growing. They mostly occur in young people. The most common site of location is the mucosa of the lower lip, however, they can occur in any area that contains minor salivary glands, such as the belly of the tongue, where the Blandin-Nuhn glands are located. The frequency of lesions associated with Blandin-Nuhn’s glands is 2.25%, with approximately 400 cases reported to date. The purpose of this publication is the description of an uncommon pathology, as well as a review of the literature. The case of a three-year-old female with a history of congenital volume increase at the dorsum of the tongue without symptoms compatible with mucocele is reported, an excisional biopsy was performed under general anesthesia. The result of the histopathological study reports: extravasation mucus phenomenon. Patient evolves satisfactorily. These expansive lesions can affect the normal development of people’s lives, causing dyslalia, dysphagia and dyspnea. Treatment of this type of injuries in childhood favors adequate speech development and improves feeding conditions.
Tecnologías de Información y Comunicación en odontólogos docentes
Authors: Parra-Gálvez Katherine Fiorella
Published: November 2024

Objetivo. Determinar la frecuencia de uso de las Tecnologías de Información y Comunicación (TIC) en docentes de odontología de una universidad pública. Métodos. Este estudio fue de tipo cuantitativo, observacional, descriptivo y de corte transversal. La muestra fue conformada por 67 docentes en labor de la Facultad de Odontología de la Universidad Nacional Mayor de San Marcos, quienes fueron seleccionados mediante el muestreo aleatorio estratificado. Dichos maestros respondieron a un formulario virtual tipo encuesta con una escala de Likert, cuyo contenido fue el cuestionario validado Uso de TIC. Resultados. Se obtuvo que el uso de las Tecnologías de Información y Comunicación fue en su mayoría alto con un 74.63%, y solo se presentó un caso de bajo uso de dicha variable en el sexo masculino y a la vez perteneciente al grupo docente que tenía de 31 a 40 años de experiencia.  Conclusiones. Los catedráticos de odontología tienen una frecuencia de uso favorable de las Tecnologías de Información y Comunicación en su práctica docente.
Mesialización del sector posterior por la ausencia del primer molar mediante el uso de microimplantes
Authors: Pérez-Landeros Matilde Valeria , Gonzalez-Ochoa Cesar Fernando , Rodríguez-Chávez Jacqueline Adelina , Meléndez-Ruiz José Luis , Guerrero-Velázquez Celia
Published: November 2024

A clinical case of a 16-year-old female patient is presented, who reported having lost her upper left first molar due to caries two years ago is presented. She is a patient with class II skeletal, mesofacial malocclusion, straight profile, class I right molar, absence of tooth 26, class I right canine and tendency to class II left canine, with mild upper and lower crowding and lower dental midline deviated to the left. It was treated through the use of a microimplant, with the objective of mesializing teeth 27 and 28 as well as improving the settlement of the left canine class. The mesialization of the upper left posterior teeth was successfully completed, establishing adequate occlusion, eliminating crowding, achieving good anterior guidance with coincident dental midlines, providing a functional and harmonious smile. The purpose of this case is to demonstrate that with the appropriate tools and mechanics in addition to good planning, control of the anchorage in the posterior closing movement can be achieved in the absence of an absent molar, and thus achieve adequate occlusion.
Revisión de Literatura: Resiliencia en estudiantes de Odontología
Authors: Rodriguez-Olivos Lourdes Hilda Gabriela
Published: November 2024

La investigación tiene como objetivo describir la resiliencia de los estudiantes de odontología, los factores asociados y las consecuencias en sus respectivas actividades académicas. Se realizó una investigación y recopilación de información bibliográfica especializada, en revistas indexadas de repositorios internacionales como Elsevier, PubMed Scielo, entre otras, con artículos publicados desde el 2019 hasta el 2023. La literatura ha demostrado que la resiliencia carece de una definición unánime, y su significado varía según las disciplinas que la estudian. Sin embargo, todas las definiciones hacen referencia a la capacidad de enfrentar adversidades y obtener resultados positivos. La resiliencia en estudiantes de odontología es crucial para equilibrar el crecimiento académico, la calidad del cuidado al paciente y el bienestar personal, lo que conduce a una experiencia educativa más exitosa y satisfactoria en esta profesión. También es importante resaltar que las instituciones educativas son el lugar ideal para promover la resiliencia.
Tratamiento de paciente clase III esqueletal por hipoplasia maxilar con canino superior retenido
Authors: Prado-Cortés María Monserrat , Rosas-Gama Raquel Guillermina , Rodríguez-Chávez Jacqueline Adelina , Meléndez Ruiz José Luis , Ortiz-García Yveth Marlene
Published: November 2024

La maloclusión clase III esqueletal por hipoplasia maxilar puede provocar la retención de algunas piezas dentales, ocupando los caninos superiores el tercer lugar de los dientes más afectados; por lo que es necesario el trabajo interdisciplinario con otras especialidades odontológicas para su correcto abordaje quirúrgico. Mientras que, para la corrección de la hipoplasia maxilar, el expansor Hyrax es el tratamiento ortopédico más utilizado en pacientes con crecimiento remanente. Se presenta caso clínico de paciente femenina de 14 años, clase III esqueletal por hipoplasia maxilar, biotipo mesofacial, perfil cóncavo, mordida cruzada anterior y posterior unilateral izquierda con canino superior derecho retenido. Los principales objetivos fueron: corregir la mordida cruzada y traccionar el canino retenido a su correcta posición. Al finalizar el tratamiento se eliminó la mordida cruzada y se logró la expansión palatina, incorporando así, el canino retenido en el arco dentario. En conclusión, el correcto diagnóstico, el adecuado plan de tratamiento y la atención temprana de la paciente fueron factores indispensables ya que proporcionaron un pronóstico favorable y un tratamiento conservador, evitando futuras complicaciones y tratamientos invasivos.
El equipo radiográfico portátil dental ¿Es seguro para el odontólogo?
Authors: Tenorio-Estrada Janet K.
Published: November 2024

En 1921 se crea el primer equipo radiográfico portátil dental (ERPD) con uso en la medicina y odontología militar1,2. Su uso se limita a situaciones en las que los pacientes no puedan trasladarse a un equipo radiográfico fijo, como pacientes bajo sedación, anestesia general, postrados o con discapacidades que afectan su movilidad1-4. También se extiende su uso en odontología forense, excavaciones arqueológicas, identificación de individuos en desastres masivos o ausencia de equipos radiográficos fijos en el sector1-5.
Incorporación de música en el proceso de ordeñe en vacas lecheras de un tambo de la Universidad Nacional de Asunción, Paraguay
Authors: Lara Marta , Alvarenga Noelia , Báez Mónica , Ortiz Haleydis , Pedrozo Raquel , Riveros José , Valenzano Patricia , Criscioni Patricia
Published: November 2024

The effect of Guarania genre music on productive performance and animal well- being (milk production and serum cortisol) was evaluated. In total, 17 animals of various breeds and in different stages of lactation were used, with a crossover design, where each animal received both treatments in each period (inclusion and non-inclusion of music in the milking process). Each period was two weeks. Daily controls of milk production were carried out (two milkings per day) and blood samples were obtained weekly to determine serum cortisol concentrations. The average milk production of the group of cows without music application was 19.7 L/day and in the group of cows with music application it was 20.4 L (p=0.008). 96% of cortisol concentrations had a level less than 1 µg/dl, considered within the reference range, and without significant difference between treatments.
Hallazgos bioquímicos y ecográficos en caninos obesos
Authors: Soto Alvarado Christiane , Trujillo Garcés Camila
Published: November 2024

The aim of this study was to identify comorbidities in obese canines attending Centro de Veterinaria y Zootecnia CES, Medellín, Colombia. Thirty canines with a body condition of 7/9 to 9/9 were evaluated. Those with signs of systemic disease or endocrinopathy were excluded. An evaluation of body condition, abdominal ultrasound (with emphasis on pancreas, liver and adrenal glands), non-invasive blood pressure measurement and blood analysis of cholesterol, triglycerides, glucose and canine-specific pancreatic lipase (cPLI) were performed. The results showed that 19 individuals presented hypertriglyceridemia, and those with higher triglyceride values presented ultrasound findings of vacuolar liver disease (p<0.01). Systolic blood pressure, cholesterol, glucose and cPLI were found within normal ranges and without differences between body condition ranges. The importance of including abdominal ultrasound in the diagnosis of obese patients is highlighted. It is concluded that hypertriglyceridemia associated with obesity leads to the accumulation of hepatic fatty infiltrates and vacuolar liver disease.
Variación de porcentaje de fibras meduladas y colorimetría en fibra blanca de alpaca Huacaya y Suri
Authors: Roldan-Juarez Jesús , Lozano Franklin , Machaca Virgilio , Pinares Rubén
Published: November 2024

The aim of the study was to evaluate the variability of the percentage of medullated fibres, according to sex and location and to compare the colorimetric characteristics in white fibre from Huacaya and Suri alpaca. The study was carried out in two communities (Juntaya in the Oropesa district and San Juan in the Sabaino district) in the province of Antabamba, Apurímac region (Peru), located between 3950 and 4543 meters above sea level. In total, 451 (Huacaya = 410 and Suri = 41) fibre samples (10 g) were taken from the mid side area. The medullated fibres (%) and the mean fibre diameter (µm) were evaluated using the Fiber Med device. For the colour analysis, a spectrometer coupled to an integrating sphere was used and for the characterization of the chemical bands, an FTIR spectrophotometer. The percentage of total medullation, continuous medullation and strongly medullated fibres were greater in female Huacaya alpacas (p<0.01). The mean diameter of medullated and non-medullated fibres differed depending on the location, while the mean fibre diameter and mean diameter of medullated fibres were higher in males (p<0.01). The colorimetric parameters of luminosity (L*), chromaticity (C*) and tone (Hº) were similar (p>0.05) in the fibres of the two groups of alpacas. In conclusion, in Huacaya alpaca there is variability in the percentage of continuous medullation and mean fibre diameter, depending on sex and location, but the colorimetric characteristics of white fibres are like those of the Suri.