University of Quintana Roo

Background Dermal fillers have been a popular choice for cosmetic dermatology procedures, and understanding the physical properties of microparticles used in dermal fillers is crucial for developing safe and effective aesthetic treatments. Aim This study analyzed three dermal filler products (Radiesse, HarmonyCA, and Hydroxyfill) based on calcium hydroxyapatite microspheres approved for dermal filler procedures in Mexico. Material and Methods The study used scanning electron microscopic analysis to study the morphology and characteristics of the calcium hydroxyapatite microspheres used in these dermal filler products. Results Results revealed important differences in the shape of the microspheres between the three products, which may have implications for their biocompatibility and performance in clinical use. Conclusions Gaining a deeper understanding of these differences enables the improved development of dermal fillers to meet the growing demand for safe and effective aesthetic treatments. This study contributes to building knowledge about the use of microparticles in soft tissue fillers for aesthetic treatments and medical applications.

The Mayan culture was established in the jungle of the Yucatan Peninsula in Mexico, extending to Guatemala, Belize, and part of Honduras and El Salvador. In the Mayan worldview, water appears as a central forming element of the Universe and as the Earth’s soul, being a sacred life-giving element. God Chaac, creator of lightning, rain and water, carried an axe with which he broke jugs releasing water to make it fall. According to Mayan stories, Chaac inhabited caves and sinkholes (known locally as cenotes, from the Mayan word ts’ono’ot), places that were considered the entrance to the underworld or world of the dead. Due to the karst soil, widely predominant in the Yucatan Peninsula, the region does not have surface runoffs, such as rivers or lakes, being the underground flows and cenotes (considered sacred places for the birth of life because they contained virgin water) the main sources of water supply. In addition to cenotes, in relation to water management among the Mayans, evidence has been found of the development of hydraulic systems to face scarcity in the dry season, which included canals, dams, and irregular cisterns called chulub tun, where they caught and stored rainwater for later use.

In this article, a wavelet entropy, which behaves as a shifted version of the standard wavelet $(q, q')$-entropy of fractal signals, is presented. The shifted wavelet $(q, q')$-entropy is obtained by computing the standard $(q, q')$-entropy functional on a weighted relative-wavelet-energy (RWE) representation of fractal signals; it is shown that the weight within the RWE plays the role of a shifting factor in the characteristics of the standard wavelet $(q, q')$-entropy. Therefore the shifted wavelet $(q, q')$-entropy relocates the wavelet entropy values to any point of the fractality index range, which allows us to analyze a wide variety of fractal signal families thus improving on previously proposed entropies in the literature. Information planes for these entropies are obtained using different shifts and values of parameters q and $q'$, which allow us to highlight the potential applications for a fractal signal analysis. Moreover, an experimental study using synthesized exact fractal signals shows that the shifted wavelet entropy can classify stationary long-memory signals from short-memory ones and can also be used to differentiate other fractal signal families.

Se presenta un análisis de los principales determinantes de la violencia familiar, según el enfoque ecológico contextual y se identifican las condiciones necesarias y suficientes para la presencia de este fenómeno en los municipios de Quintana Roo, México, mediante el análisis cualitativo comparado para datos nítidos (csQCA) complementado con técnicas de teoría de la información para análisis comparativo. Se ofrece una breve revisión documental acerca del concepto y abordaje epistémico de la violencia familiar, sus consecuencias y la magnitud del problema, para posteriormente aplicar la metodología QCA y discutir los resultados. Se ha encontrado que existen cuatro variables cuya combinación puede generar altas tasas de violencia familiar en los municipios, a saber: una mayoría poblacional sin afiliación religiosa, altas tasas de disrupción familiar, una mayoría poblacional que no es protestante o evangélica y población mayoritariamente urbana.

This report details the case of a preadolescent female patient diagnosed with Kabuki syndrome, a rare genetic disorder characterised by distinctive facial features, growth delay and cognitive impairment. The patient’s medical history includes perinatal complications, alongside challenges in developmental milestones, feeding and psychomotor skills since infancy, prompting further investigation. Genetic testing confirmed the diagnosis, revealing a full deletion of KDM6A . The patient underwent a multidisciplinary approach, addressing various aspects of her condition, which resulted in significant improvements in several areas. However, despite progress, challenges persist in daily tasks and the acquisition of advanced motor skills. This underscores the necessity of integrated management strategies, emphasizing the diagnostic importance of genetic testing that contributes to a deeper understanding of the clinical spectrum and guides targeted therapeutic interventions. Continued research is crucial to further unravel the complexities of this rare genetic disorder and enhance patient care.

Romeo and Juliet: a forbidden love story? A review of hybridization in keystone, aquatic megafauna. Hybridization, understood here as the sexual reproduction between individuals of different species, is relatively common in riverine, estuarine, and marine environments. Investigating hybridization in wild populations of aquatic megafauna species provides important insight into their biology, evolution, and conservation. Here, we conducted an extensive and systematic review of published reports of hybrids in keystone, aquatic megafauna, aiming to provide a clear summary of state-of-the-art and hybridization trends in this group. We selected 129 journal articles reporting 80 hybrids in aquatic megafauna. We included mammals (40.3 %), turtles (33.3 %), crocodilians (17.8 %), and elasmobranchs (8.5 %) that are widely distributed in oceans and continental waters. Our results showed a clear increase in reports of hybrids involving aquatic megafauna in recent years, possibly reflecting the improvement in molecular techniques. However, this increase could also be a consequence of translocation of organisms and habitat modification by humans, and may have a critical impact on conservation, particularly regarding already depleted populations. Hybridization has directly or indirectly facilitated the extinction of many species, but it has also played a crucial role in the evolution and adaptation of many others. To determine whether hybridization is a natural effect or a collateral effect of anthropic pressures we need to understand its implications on the conservation of aquatic megafauna.

Subterranean estuaries are coastal ecosystems characterized by vertically stratified groundwater. The biota within these ecosystems is relatively understudied due to the inherent difficulty of accessing such extreme environments. The fauna inhabiting these ecosystems is considered vulnerable to extinction, and the presence of cryptic species has major implications for research and conservation efforts. Most species lack molecular data; however, the evaluation of genetic data for some taxa has revealed that undocumented species are common. This study employs molecular species delimitation methods and DNA barcoding through the analysis of publicly and newly generated sequences, including individuals from type localities and non-crustacean phyla; the latter are typically overlooked in biodiversity assessments of subterranean estuaries. We analysed 376 cytochrome c oxidase subunit I (COI) gene sequences and 154 16S rRNA gene sequences. The COI sequences represented 32% of previously described species and 50% of stygobiont species from the Yucatan Peninsula and Cozumel Island, while sequences of the 16S rRNA represented 14% of described species and 22% of stygobionts. Our results revealed cryptic genetic lineages and taxonomic misidentification of species. As several species from these ecosystems are recognized as endangered, the use of molecular approaches will improve biodiversity estimates and highlight overlooked cryptic lineages in need of evaluation of conservation status.

Since the turn of the century, there have been increasing calls toexpand the field of translation studies to integrate internationalthinking, conceptualisation, and theorisation. Such initiatives aim tofoster greater creativity and new possibilities in various fields byincorporating perspectives from the so-called periphery modelsand frameworks. Taking this into consideration, this study intendsto provide an analysis of the publishing development in the field offeminist translation studies (FTS) based on the information suppliedby the Bibliography of Interpreting and Translation database (BITRA).The main focus is to determine the geographic distribution of pub-lications and the languages employed in the development of femin-ist translation research. What is the status of publishing developmentin FTS? What trends can be identified in both central and peripheralcontexts? Is there a balance between central and peripheral researchparticipation? Is there any evidence of the enlargement of the field inthe light of the data obtained from BITRA? This bibliographic reviewshows the gradual consolidation of the field, with key research hubsin English-speaking countries and growing contributions from Spain,Brazil, and Colombia. However, international publishing remainsuneven, with central scholars dominating discussions. Recent interesthas spurred more international networks.

The endangered Greater Caribbean manatee (Trichechus manatus manatus), one of the largest aquatic herbivores in the Caribbean, plays a crucial role in nutrient recycling within the ecosystem, and the study of its feeding ecology is important for its conservation. Despite several studies determining the items consumed by manatees, there remains limited understanding of their nutritional significance for the species in the Western Caribbean. This study, aimed to analyze the bromatological composition of the food components in the manatee’s diet in the Mexican Caribbean across three distinct environments. We manually collected aquatic and semi-aquatic primary producers potentially part of the manatee diet in marine, brackish and riverine areas of the southern region of Quintana Roo, Mexico. Then, we analyzed them for moisture, crude protein, crude fiber, ash, ether extract, digestible nutrients, and digestible energy. We present the initial data on nutrient values in the manatee diet in the Caribbean, establishing a foundation for exploring the factors that influence spatial, temporal, and species-specific variations in nutrient content at a regional level. Our bromatological analysis demonstrated that the most nutritionally important plants for manatees, based mainly on protein content and freshwater contribution, include the seagrasses Halodule wrightii, Syringodium filiforme, Thalassia testudinum, the water lily Pontederia crassipes, and Vallisneria sp. Effective habitat management for manatees is crucial for their survival, ensuring that feeding resources are maintained in both enough quantity and high quality. Given its nutritional significance for manatees, we recommend that seagrasses in the region should be prioritized as conservation targets.

Coral reef ecosystems support high fish biodiversity through ecological interactions with structural complexity across multiple spatial scales including coral colony architecture and the surrounding seascape structure. In an era where the complexity of coral reef ecosystems is being diminished, understanding the importance of structural characteristics beyond single focal patches has the potential to better inform actions for protecting, restoring or creating habitat for reef‐associated species. A seascape ecology approach was applied to explore the associations between multiple scales of seascape structure and fish assemblage response variables within a small (49.6 km ² ) offshore no‐take MPA, Sir Bu Nair Island Protected Area, in Sharjah, United Arab Emirates. Fish–seascape associations were modelled with single regression trees. Both in situ and remote sensing–derived variables produced the best models with highest contributions from coral cover, amount of hard‐bottom habitat type and structural complexity of the seafloor terrain. Fish species richness was significantly higher where coral cover exceeded 35%. The hard‐bottom areas with coral supported diverse assemblages dominated by carnivorous and omnivorous fishes. The Sir Bu Nair Island Protected Area provides a critical refuge for threatened and regionally overexploited species including those with low resilience to fishing. The ecological success of this protected area is key to safeguarding regional marine biodiversity and recovering fish populations to enhance food security.

Statistical machine learning (ML) extracts patterns from extensive genomic, phe-notypic, and environmental data. ML algorithms automatically identify relevant features and use cross-validation to ensure robust models and improve prediction reliability in new lines. Furthermore, ML analyses of genotype-by-environment (G×E) interactions can offer insights into the genetic factors that affect performance in specific environments. By leveraging historical breeding data, ML streamlines strategies and automates analyses to reveal genomic patterns. In this review we examine the transformative impact of big data, including multi-trait genomics, phenomics, and environmental covariables, on genomic-enabled prediction in plant breeding. We discuss how big data and ML are revolutionizing the field by enhancing prediction accuracy, deepening our understanding of G×E interactions, and optimizing breeding strategies through the analysis of extensive and diverse datasets. The impact of data-driven strategies and ML techniques Valuation and selection processes are crucial in plant breeding for identifying desirable traits such as disease resistance, drought and heat tolerance, and high grain yield. Testing these selected cultivars across different environments through multi-environment trials (METs; see Glossary) assists in understanding their performance and stability. Accurate and early predictions have a pivotal role in plant breeding [1]. With advances in statistical modeling and data analysis, breeders can now predict the performance of breeding lines or cul-tivars with greater precision. This allows more informed and accurate decisions and also reduces the time and resources required for developing superior cultivars. Early predictions assist breeders in focusing on the most promising genotypes, thereby accelerating the breeding cycle and enhancing the efficiency of the breeding process. Nevertheless, data collected from METs are intrinsically complex owing to structural patterns, nonstructural noise, and relationships among genotypes, environments, and genotypes and environments considered jointly, namely genotype × environment (G×E) interactions [1]. Pattern implies that cultivars respond to specific environments (location, years, location-year combinations) in a systematic and interpretable manner, whereas noise suggests that the responses are unpredictable and uninterpretable. Genomic markers have revolutionized plant breeding by enabling precise selection of desirable traits at the DNA level. This accelerates the breeding process, increases accuracy in predicting plant performance, reduces costs, and enhances the development of pest/stress-resistant and high-yield cultivars, thus making plant breeding faster, more efficient, and more effective [2]. Highlights The genomic prediction (GP) approach that uses genotypic and phenotypic data to predict the genomic estimated breeding value (GEBV) of individuals has been widely adopted by both public and private breeding organizations. GP models can predict the performance of plant germplasm in different environments by correctly modeling genotype × environment interactions (G×E) across multiple traits. Machine learning (ML) algorithms can help breeders to determine the most effective parental selection, mating designs, population sizes, and selection intensities to maximize selection gain at a given budget while minimizing the loss of genetic diversity. Neural networks (NNs) have great potential in improving the accuracy of GP models in the context of 'big data'. These algorithms can identify complex patterns and relationships between genotypes and phenotypes, leading to more precise predictions of important plant traits.

The apparent lack of physical barriers in the marine realm has created the conception that many groups have a constant gene flow. However, changes in ocean circulation patterns, glacial cycles, temperature, and salinity gradients are responsible for vicariant events in many fish species, including sharks. The bonnethead shark, Sphyrna tiburo, is an endangered small coastal shark species. Although considerable efforts have recently been undertaken, little remains known about the possible biogeographic scenario that can explain its actual distribution within the western Atlantic (WA). Here, we used 599 mitochondrial sequences to assess the phylogeographic structure and implement Bayesian phylogenetic analyses to obtain divergence times and reconstruct the ancestral geographic range. This allowed us to infer processes responsible for the diversification of S. tiburo into major divergent lineages. Our results indicated that S. tiburo in the WA represents three independent lineages, with Brazilian samples differentiated into a distinct genetic cluster. The posterior probability of ancestral range analysis indicated that the species likely originated in the northern region (Carolina Province and the southern Gulf of Mexico), where it colonized southward through the uplifting of the Central American Isthmus (CAI). The Northern and Caribbean genetic clusters appear to have arisen from the intensification of the Loop Current, which currently flows northward passing the Yucatan Peninsula, Gulf of Mexico, and east Florida. Following initial colonization, the Northeastern Brazil group differentiated from the Caribbean region due to the sediment and freshwater discharge of the Amazon‐Orinoco Plume. Thus, the evolutionary history of the S. tiburo complex can be explained by a combination of dispersal and vicariance events that occurred over the last ~5 million years (MY). We established and confirmed the species and population limits, demonstrating that the Amazon‐Orinoco Plume constitutes a significant dispersal barrier for coastal sharks. Finally, we discuss some recommendations for the conservation of the bonnethead shark.

En el presente trabajo se desarrolló el estudio de un rotor de aerogenerador Darrieus tipo Phi de 2 m de altura (para baja potencia) mediante los métodos Double Multiple Streamtube (DMS) y Qblade lifting line theory (QLLT) con la finalidad obtener los parámetros de configuración adecuados para el posterior diseño de un aerogenerador de eje vertical (VAWT) de dimensiones similares. Se realizó la comparación de ambos métodos con resultados experimentales reportados por otros autores, utilizando como referencia la estimación del coeficiente de potencia (Cp) en función de la relación de velocidad específica (TSR). Se encontró que el método QLLT es una mejor solución en términos de estimación del coeficiente de potencia, con un error absoluto máximo de 35 % y error promedio de 5 %. Sin embargo, dado el alto tiempo de cómputo en comparación con el método DMS es recomendable su uso en etapas avanzadas de diseño. Por otro lado, el método DMS con una capacidad de estimación inferior (error absoluto máximo de alrededor de 60 %, error promedio de 11 %) es adecuado para las primeras etapas de diseño dado su bajo tiempo de Cómputo.

This review article focuses on von Hippel–Lindau (VHL) disease, a rare genetic disorder characterized by the development of tumors and cysts throughout the body. It discusses the following aspects of the disease. Genetics: VHL disease is caused by mutations in the VHL tumor suppressor gene located on chromosome 3. These mutations can be inherited or occur spontaneously. This article details the different types of mutations and their associated clinical features. Pathophysiology: The underlying cause of VHL disease is the loss of function of the VHL protein (pVHL). This protein normally regulates hypoxia-inducible factors (HIFs), which are involved in cell growth and survival. When pVHL is dysfunctional, HIF levels become elevated, leading to uncontrolled cell growth and tumor formation. Clinical Manifestations: VHL disease can affect various organs, including the brain, spinal cord, retina, kidneys, pancreas, and adrenal glands. Symptoms depend on the location and size of the tumors. Diagnosis: Diagnosis of VHL disease involves a combination of clinical criteria, imaging studies, and genetic testing. Treatment: Treatment options for VHL disease depend on the type and location of the tumors. Surgery is the mainstay of treatment, but other options like radiation therapy may also be used. Challenges: This article highlights the challenges in VHL disease management, including the lack of effective therapies for some tumor types and the need for better methods to monitor disease progression. In conclusion, we emphasize the importance of ongoing research to develop new and improved treatments for VHL disease.

Desde un enfoque decolonial, en este artículo se analiza la interrupción de los estudios universitarios en jóvenes mujeres indígenas originarias del municipio de Calakmul (Campeche, México). Con una metodología cualitativa se aplicaron técnicas como la observación y la entrevista a profundidad para producir narrativas con 10 jóvenes que ingresaron a la Universidad Tecnológica de Calakmul entre 2015 y 2021. Los hallazgos muestran que la colonialidad configuró el territorio de Calakmul y las dinámicas de sus instituciones. Así, en un área de reciente colonización y con profundas desigualdades estructurales, la interrupción de los estudios universitarios se gestó a lo largo de la trayectoria educativa, en la que las colaboradoras enfrentaron violencia institucional, epistémica y relacionada con sus derechos lingüísticos. Las jóvenes destacan por su capacidad de agencia, pero sus redes de apoyo fueron insuficientes para concluir con sus estudios universitarios.

The morphometric characterization of large-scale depressions, with high-resolution contributions and in urban contexts, has been carried out in the cities of Cozumel and Playa del Carmen. For Tulum, the inputs have been insufficient in identifying depressions at a detailed level. This research aimed to analyze and characterize the negative exokarstic relief of the city of Tulum through morphometric parameters and urban elements that contribute to the knowledge of the human-nature relationship. From the DEM ALOS PALSAR, contour lines, elevation models, slopes, and shadows were extracted, which allowed the identification of depressions, topographic profiles, and the calculation of morphometric indices; subsequently, the distribution of depressions was analyzed concerning urban elements. The identified depressions were classified into uvalas, sinkholes, and poljes. The analysis of the topographic profiles allowed us to recognize units in the shape of "V" (64%), "U" (19%), and "Hoya" (17%). The highest concentration of type V depressions is observed in the city's central area, characterized by a medium and high population density, as well as the centralization of commercial and public establishments. The detailed characterization of depressions is a planning and management tool for the territory.

Aplicamos la Escala de Teorías Implícitas de la Comprensión Lectora (ETICOLEC), modificada para futuros docentes de español de una universidad pública de la Península de Yucatán y describimos las teorías implícitas encontradas en la muestra. Seguimos el procedimiento de Prat y Doval (2005) para incorporar nuevos ítems a la escala y poner a prueba sus propiedades psicométricas mediante análisis de componentes principales y de consistencia interna con alfa de Cronbach, utilizando el programa Statistical Package for the Social Sciences (spss, v. 26). Además de registrarse propiedades psicométricas, el estudio identificó tres subescalas con buena consistencia interna, cada una de las cuales mide una teoría implícita o conjunto de creencias sobre la comprensión lectora. Destaca la presencia de una teoría implícita crítica literaria, altamente funcional para la enseñanza del español. Algunos participantes sostienen más de una teoría implícita, en tanto que un grupo más grande no suscribe ninguna. Ello puede tener implicaciones para sus procesos de alfabetización académico-disciplinar y su futura práctica docente. El estudio es innovador al aplicar una perspectiva tipológica y el concepto de esquemas de teorías implícitas para describir las agrupaciones de teorías implícitas de los participantes.

Objective To determine the effect of self-distancing, self-transcendence, and family functioning on self-care agency in Mexican older adults. Methods Correlational-explanatory design, with a sample of 253 elderly, collecting data through a simple random sampling. A personal data questionnaire was applied, the scale of: self-transcendence, the self-distancing subscale, the family APGAR and the ability to self-care in Mexican population from different demographic groups. Descriptive and inferential statistics were applied (Mann-Whitney U and a structural equation model) and the study was approved by a registered ethics committee. Results The study had participation from 253 elderly, with a mean age of 68.02 years, with prevalence of the female sex (60.1%); the level of education was primary school or lower (51.4%). It was observed that the group of chronic diseases had lower self-distancing (U = 4.449.5, p = 0.038) and greater self-transcendence (U = 4177.0, p = 0.008), and selfcare (U = 4365.5, p = 0.024) than the group without chronic diseases. It was also found that self-transcendence, self-distancing, and family functionality produce a positive effect of 37% on selfcare. Conclusion Self-distancing, self-transcendence, and family functionality explain an important proportion of selfcare in the elderly. Said knowledge permits understanding the care behavior of the elderly and, thus, propose future educational interventions by nursing to prevent or avoid functional, cognitive loss and social effects.

En los últimos años, el populismo ha ganado millones de adeptos alrededor del mundo. En numerosos países, los líderes y partidos populistas ocupan un espacio importante en los órganos de representación e, incluso, en algunos casos han encabezado o encabezan el gobierno. Lo anterior ha fomentado la reflexión y el debate académico en torno a este fenómeno, y es posible encontrar tanto argumentos a favor como en contra del populismo y su impacto en la democracia. En este panorama, Christian F. Rostbøll ofrece, en Democratic Respect. Populism, Resentment, and the Struggle for Recognition, un análisis sobre el significado del populismo, las razones que llevan a la gente a apoyar a este tipo de líderes y partidos, y la validez de sus demandas en el contexto democrático. ...