1,895 results on '"Cuervo P"'
Search Results
2. Comparison of Short-Range Order in GeSn Grown by Molecular Beam Epitaxy and Chemical Vapor Deposition
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Liu, Shang, Liang, Yunfan, Zhao, Haochen, Eldose, Nirosh M., Bae, Jin-Hee, Concepcion, Omar, Jin, Xiaochen, Chen, Shunda, Bikmukhametov, Ilias, Akey, Austin, Cline, Cory T., Covian, Alejandra Cuervo, Wang, Xiaoxin, Li, Tianshu, Zeng, Yuping, Buca, Dan, Yu, Shui-Qing, Salamo, Gregory J., Zhang, Shengbai, and Liu, Jifeng
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Condensed Matter - Materials Science ,Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
Atomic short-range order (SRO) in direct-bandgap GeSn for infrared photonics has recently attracted attention due to its notable impact on band structures. However, the SRO in GeSn thin films grown by different methods have hardly been compared. This paper compares SRO in GeSn thin films of similar compositions grown by molecular beam epitaxy (MBE) and chemical vapor deposition (CVD) using atom probe tomography. An $\sim$15% stronger preference for Sn-Sn 1$^{st}$ nearest neighbor (1NN) is observed in MBE GeSn than CVD GeSn for both thin film and quantum well samples with Sn composition ranging from 7 to 20%. Interestingly, samples grown by different deposition tools under the same method (either MBE or CVD) showed remarkable consistency in Sn-Sn 1NN SRO, while MBE vs. CVD showed clear differences. Supported by theoretical modeling, we consider that this difference in SRO originates from the impact of surface termination, where MBE surfaces are exposed to ultrahigh vacuum while CVD surfaces are terminated by H to a good extent. This finding not only suggests engineering surface termination or surfactants during the growth as a potential approach to control SRO in GeSn, but also provides insight into the underlying reasons for very different growth temperature between MBE and CVD that directly impact the strain relaxation behavior.
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- 2024
3. Plasma water treatment for PFAS: Study of degradation of perfluorinated substances and their byproducts by using cold atmospheric pressure plasma jet
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Topolovec, Barbara, Jovanovic, Olivera, Puac, Nevena, Skoro, Nikola, Lumbaque, Elisabeth Cuervo, and Petrovic, Mira
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Physics - Plasma Physics - Abstract
This study evaluates the effectiveness of non-thermal plasma at atmospheric pressure (NTP APPJ) for treating PFAS - contaminated water in different matrices. Successful removal of several perfluoroalkyl carboxylic acids (PFCAs) (C6 to C4), perfluroalkane sulfonic acids (PFSAs) (C8 to C4) and perfluropolyethers (PFPEs) (GenX and ADONA) PFAS compounds was achieved in laboratory scale experiments. Complex matrix effects influence degradation rates. Byproducts from the plasma treatment were investigated, revealing distinct degradation mechanisms for various PFAS compounds. For PFSAs and PFCAs, degradation involved electron transfer, bond breaking and subsequent reactions. Conversely, ADONA and GenX degradation initiated with ether-group cleavage, followed by additional transformation processes. Plasmabased technology shows potential for degradation of PFAS, especially for newer substitute compounds like ADONA and GenX. However, further research is needed to optimize plasma performance for complete mineralization of PFAS. This study also proposes a degradation mechanism for ADONA, marking a novel investigation into ether-group PFAS degradation with potential implications for further research and understanding toxicological implications.
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- 2024
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4. Transfer Learning from Whisper for Microscopic Intelligibility Prediction
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Best, Paul, Cuervo, Santiago, and Marxer, Ricard
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Electrical Engineering and Systems Science - Audio and Speech Processing ,Computer Science - Computation and Language ,Computer Science - Sound - Abstract
Macroscopic intelligibility models predict the expected human word-error-rate for a given speech-in-noise stimulus. In contrast, microscopic intelligibility models aim to make fine-grained predictions about listeners' perception, e.g. predicting phonetic or lexical responses. State-of-the-art macroscopic models use transfer learning from large scale deep learning models for speech processing, whereas such methods have rarely been used for microscopic modeling. In this paper, we study the use of transfer learning from Whisper, a state-of-the-art deep learning model for automatic speech recognition, for microscopic intelligibility prediction at the level of lexical responses. Our method outperforms the considered baselines, even in a zero-shot setup, and yields a relative improvement of up to 66\% when fine-tuned to predict listeners' responses. Our results showcase the promise of large scale deep learning based methods for microscopic intelligibility prediction.
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- 2024
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5. Scaling Properties of Speech Language Models
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Cuervo, Santiago and Marxer, Ricard
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Electrical Engineering and Systems Science - Audio and Speech Processing ,Computer Science - Artificial Intelligence ,Computer Science - Computation and Language ,Computer Science - Neural and Evolutionary Computing - Abstract
Speech Language Models (SLMs) aim to learn language from raw audio, without textual resources. Despite significant advances, our current models exhibit weak syntax and semantic abilities. However, if the scaling properties of neural language models hold for the speech modality, these abilities will improve as the amount of compute used for training increases. In this paper, we use models of this scaling behavior to estimate the scale at which our current methods will yield a SLM with the English proficiency of text-based Large Language Models (LLMs). We establish a strong correlation between pre-training loss and downstream syntactic and semantic performance in SLMs and LLMs, which results in predictable scaling of linguistic performance. We show that the linguistic performance of SLMs scales up to three orders of magnitude more slowly than that of text-based LLMs. Additionally, we study the benefits of synthetic data designed to boost semantic understanding and the effects of coarser speech tokenization.
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- 2024
6. Unidirectional Ray Polaritons in Twisted Asymmetric Stacks
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Álvarez-Cuervo, J., Obst, M., Dixit, S., Carini, G., Tresguerres-Mata, A. I. F., Lanza, C., Terán-García, E., Álvarez-Pérez, G., Fernández-Álvarez, L., Diaz-Granados, K., Kowalski, R., Senerath, A. S., Mueller, N. S., Herrer, L., De Teresa, J. M., Wasserroth, S., Klopf, J. M., Beechem, T., Wolf, M., Eng, L. M., Folland, T. G., Martín-Luengo, A. Tarazaga, Martín-Sánchez, J., Kehr, S. C., Nikitin, A. Y., Caldwell, J. D., Alonso-González, P., and Paarmann, A.
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Physics - Optics ,Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
The emergence of a vast repository of van der Waals (vdW) materials supporting polaritons - light coupled to matter excitations - offers a plethora of different possibilities to tailor electromagnetic waves at the subwavelength-scale. In particular, the development of twistoptics - the study of the optical properties of twisted stacks of vdW materials - allows the directional propagation of phonon polaritons (PhPs) along a single spatial direction, which has been coined as canalization. Here we demonstrate a complementary type of nanoscale unidirectional propagation that naturally emerges thanks to twistoptics: unidirectional ray polaritons (URPs). This natural phenomenon arises in two types of twisted hyperbolic stacks: homostructures of $\alpha$-MoO$_3$ and heterostructures of $\alpha$-MoO$_3$ and $\beta$-Ga$_2$O$_3$, each with very different thicknesses of its constituents. URPs are characterized by the absence of diffraction and the presence of a single phase of the propagating field. Importantly, we demonstrate that this ray behavior can be tuned by means of both relative twist angle and illumination frequency variations. Additionally, an unprecedented "pinwheel-like" propagation emerges at specific twist angles of the homostructure. We show that URPs emerge due to the twist between asymmetrically stacked biaxial slabs, while the shear effect in monoclinic $\beta$-Ga$_2$O$_3$ is of minor importance. Our findings demonstrate a natural way to excite unidirectional ray-like PhPs and offer a unique platform for controlling the propagation of PhPs at the nanoscale with many potential applications like nanoimaging, (bio)-sensing or polaritonic thermal management., Comment: 15 pages, 5 figures
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- 2024
7. The Four P's on the Internet: Pornography, Plagiarism, Piracy and Permission
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Liliana Cuervo-Sánchez, Sandra and Etxague, Itxaro
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Access to youth culture by adolescents has changed as new communication technologies have found new ways of offering media content to viewers. Adolescents today access more content more frequently. However, the greater their exposure, the higher the likelihood of this leading to risk behaviors such as access to pornography, plagiarism, piracy and copyright violation. The aim of the present study is, therefore, to determine the frequency of these risk behaviors linked to the Internet content accessed and downloaded by minors, analyzing this variable in accordance with gender, age and context (Spain, Italy and Greece). We analyzed the responses provided by 2,529 adolescents (1,264 girls/1,262 boys) aged between 10 and 17 years from Spain, Italy and Greece. In general, adolescent boys, especially those aged 16 and 17 years, reported engaging more frequently in risk behaviors, particularly in reference to accessing youth culture content. Likewise, in terms of context, the highest means were observed among participants from Attica (Greece) and the Madrid Region (Spain), whereas the lowest means were observed in the Marche Region (Italy) and Navarre (Spain). The results revealed statistically significant differences in terms of gender, age and context. Thereby, they highlight the importance of focusing on media education from a gender perspective.
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- 2023
8. Imaging approach to deposition and neurogenic arthropathies
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Cuervo Arevalo, Ricardo, Aluja-Jaramillo, Felipe, Corredor, Carlos, and Ramirez, Juan José
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- 2024
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9. Environmental and Genetic Contributions to Attachment in Late Adolescence and Young Adulthood
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Venta, Amanda, Walker, Jesse, Bautista, Ashley, Cuervo, Maria, Bechelli, Jeremy, Houston, Rachel, Boisvert, Danielle, Armstrong, Todd, Lewis, Richard H., Johnson, Damani, and Gutierrez, Ryan
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- 2024
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10. A cell state-specific metabolic vulnerability to GPX4-dependent ferroptosis in glioblastoma
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Banu, Matei A, Dovas, Athanassios, Argenziano, Michael G, Zhao, Wenting, Sperring, Colin P, Cuervo Grajal, Henar, Liu, Zhouzerui, Higgins, Dominique MO, Amini, Misha, Pereira, Brianna, Ye, Ling F, Mahajan, Aayushi, Humala, Nelson, Furnari, Julia L, Upadhyayula, Pavan S, Zandkarimi, Fereshteh, Nguyen, Trang TT, Teasley, Damian, Wu, Peter B, Hai, Li, Karan, Charles, Dowdy, Tyrone, Razavilar, Aida, Siegelin, Markus D, Kitajewski, Jan, Larion, Mioara, Bruce, Jeffrey N, Stockwell, Brent R, Sims, Peter A, and Canoll, Peter
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- 2024
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11. Contribution of the time domain electromagnetic method to the study of the Kalahari transboundary multilayered aquifer systems in Southern Angola
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Francés, Alain P., Ramalho, Elsa C., Monteiro Santos, Fernando, Llorente, José M., Mateus, Teodora, Martín-Banda, Raquel, Cuervo, Ivan, García Lobón, José Luis, Dala, Valter, Ditutala, Manuel, Famorosa, Abreu, and da Mata Victorino, Américo
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- 2024
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12. Mobility and the Social Differentiation of Rural Youth in Australia
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Maire, Quentin and Cuervo, Hernán
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- 2024
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13. Speech foundation models on intelligibility prediction for hearing-impaired listeners
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Cuervo, Santiago and Marxer, Ricard
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Computer Science - Sound ,Computer Science - Machine Learning ,Electrical Engineering and Systems Science - Audio and Speech Processing - Abstract
Speech foundation models (SFMs) have been benchmarked on many speech processing tasks, often achieving state-of-the-art performance with minimal adaptation. However, the SFM paradigm has been significantly less explored for applications of interest to the speech perception community. In this paper we present a systematic evaluation of 10 SFMs on one such application: Speech intelligibility prediction. We focus on the non-intrusive setup of the Clarity Prediction Challenge 2 (CPC2), where the task is to predict the percentage of words correctly perceived by hearing-impaired listeners from speech-in-noise recordings. We propose a simple method that learns a lightweight specialized prediction head on top of frozen SFMs to approach the problem. Our results reveal statistically significant differences in performance across SFMs. Our method resulted in the winning submission in the CPC2, demonstrating its promise for speech perception applications., Comment: To be presented in ICASSP 2024
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- 2024
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14. Theorizing Cultural (Mis)Recognition in Rural School Staffing: Implementing a Social Justice Frame to Understand Challenges to Attract Rural Teachers
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Cuervo, Hernan
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Attracting teachers to rural schools continues to be a problem in Australian education. Debates on how to remedy staff shortages are based on a better distribution of financial and material resources. This emphasis on distribution has sidelined the role of recognition theory in understanding the challenges of rural staffing. I draw on the social justice frameworks of Nancy Fraser and Axel Honneth to argue that rural staffing challenges are anchored not just on matters of distribution but on issues that lead to the cultural misrecognition and disrespect of teaching and learning in rural places. Using data from a qualitative research project with pre-service teachers from a metropolitan university who undertook a six-week placement in a rural school, I explore how Fraser's and Honneth's frameworks contribute to illuminate that a resignification of the cultural value of rural education is critical to understand the root of the problem of rural school staffing.
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- 2023
15. Developing quality community connections through a regional preservice teacher placement program
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Murphy, Steve, Acquaro, Daniela, Baxter, Lindy, Miles-Keogh, Rebecca, Cuervo, Hernan, and Walker-Gibbs, Bernadette
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- 2024
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16. Physiological adaptation and population dynamics of a nitrifying sludge exposed to ampicillin
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Esquivel-Mackenzie, Sergio Pavel, Oltehua-Lopez, Omar, Cuervo-López, Flor de María, and Texier, Anne-Claire
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- 2024
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17. Valorization of residual lignocellulosic biomass in South America: a review
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Pardo Cuervo, Oscar H., Rosas, Camila A., and Romanelli, Gustavo P.
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- 2024
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18. Clinical characteristics and outcomes of aortic prosthetic valve endocarditis: comparison between transcatheter and surgical bioprostheses
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Jerónimo, Adrián, Olmos, Carmen, Zulet, Pablo, Gómez-Ramírez, Daniel, Anguita, Manuel, Carlos Castillo, Juan, Escrihuela-Vidal, Francesc, Cuervo, Guillermo, Calderón-Parra, Jorge, Ramos, Antonio, Cabezón, Gonzalo, Álvarez Rodríguez, Jesús, Pulido, Paloma, de Miguel-Álava, María, Sáez, Carmen, López, Javier, Vilacosta, Isidre, and San Román, J. Alberto
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- 2024
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19. Geophysicochemical characterization of soil contaminated with hydrocarbons in the northern of Veracruz
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Orozco Cuervo, U. J, Gallardo Rivas, N. V, Páramo García, U, Martínez Orozco, R. D, and Delgado Rodríguez, O
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- 2024
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20. How subsidiary and supplier misbehavior lead to corporate social responsibility performance improvements in multinationals
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Li, Cheng and Cuervo-Cazurra, Alvaro
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- 2024
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21. Electrocatalytic removal of persistent organic contaminants at molybdenum doped manganese oxide coated TiO2 nanotube-based anode
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Sergienko, Natalia, Lumbaque, Elisabeth Cuervo, Duinslaeger, Nick, and Radjenovic, Jelena
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Physics - Chemical Physics ,Condensed Matter - Materials Science - Abstract
Electrooxidation is an attractive technique that can be effectively applied for the treatment of persistent organic contaminants, but its implementation in practice is limited by the lack of efficient and low cost anode material that would not lead to the generation of chlorinated by products. Herein, we developed a novel anode based on TiO2 nanotube array NTA coated with Mo-doped MnxOy, and applied it for electrooxidation of persistent organic contaminants. The Ti TiO2 NTA MnxOyMo anode outperformed the commercial Ti IrOxPt anode and effectively oxidized organic contaminants, with a significantly reduced electric energy per order, and avoiding chlorine evolution reaction. Mo doping played a key role in the excellent performance of the synthesized anode as it favored the formation of oxygen vacancies in the host lattice and Mn and Mo species redox couples, which increased the oxidizing power of the anode and ensured its complete stability., Comment: 28 pages of manuscript text, 8 figures, Supporting Information
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- 2023
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22. Predictive AI for SME and Large Enterprise Financial Performance Management
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Cuervo, Ricardo
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Quantitative Finance - Statistical Finance ,Computer Science - Artificial Intelligence ,Quantitative Finance - General Finance - Abstract
Financial performance management is at the core of business management and has historically relied on financial ratio analysis using Balance Sheet and Income Statement data to assess company performance as compared with competitors. Little progress has been made in predicting how a company will perform or in assessing the risks (probabilities) of financial underperformance. In this study I introduce a new set of financial and macroeconomic ratios that supplement standard ratios of Balance Sheet and Income Statement. I also provide a set of supervised learning models (ML Regressors and Neural Networks) and Bayesian models to predict company performance. I conclude that the new proposed variables improve model accuracy when used in tandem with standard industry ratios. I also conclude that Feedforward Neural Networks (FNN) are simpler to implement and perform best across 6 predictive tasks (ROA, ROE, Net Margin, Op Margin, Cash Ratio and Op Cash Generation); although Bayesian Networks (BN) can outperform FNN under very specific conditions. BNs have the additional benefit of providing a probability density function in addition to the predicted (expected) value. The study findings have significant potential helping CFOs and CEOs assess risks of financial underperformance to steer companies in more profitable directions; supporting lenders in better assessing the condition of a company and providing investors with tools to dissect financial statements of public companies more accurately., Comment: 8 pages plus appendix. Thesis for MSc in AI at QMUL
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- 2023
23. Host drivers of canine dirofilariosis in an arid environment of western Argentina
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Cuervo, Pablo Fernando, Di Cataldo, Sophia, Fantozzi, María Cecilia, Rodríguez, María Belén, Pedrosa, Analía, and Mera y Sierra, Roberto
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- 2024
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24. Agricultural Biotechnological Potential of Bacillus velezensis C3-3 and Cytobacillus sp. T106 from Resource Islands of a Semi-arid Zone of La Guajira-Colombia
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Suárez-Bautista, Jeimy Daniela, Manotas-Viloría, Hillary Sharid, Leal-Mejía, Leslie, Boyacá-Vásquez, Johanna, Pineros-Castro, Yineth, Corrales, Lucia Constanza, Cuervo-Soto, Laura, and Vanegas, Javier
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- 2024
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25. NGLY1 mutations cause protein aggregation in human neurons.
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Manole, Andreea, Wong, Thomas, Rhee, Amanda, Novak, Sammy, Chin, Shao-Ming, Tsimring, Katya, Paucar, Andres, Williams, April, Newmeyer, Traci, Schafer, Simon, Rosh, Idan, Kaushik, Susmita, Hoffman, Rene, Chen, Songjie, Wang, Guangwen, Lee, Kevin, Jones, Jeffrey, Stern, Shani, Marchetto, Maria, Gage, Fred, Cuervo, Ana, Andrade, Leo, Snyder, Michael, and Manor, Uri
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CP: Neuroscience ,NGLY1 deficiency ,chaperones ,fragmented mitochondria ,neural cells ,organoids ,protein aggregates ,Humans ,Protein Aggregates ,Proteomics ,Mutation ,Mitochondria ,Neurons ,Peptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine Amidase - Abstract
Biallelic mutations in the gene that encodes the enzyme N-glycanase 1 (NGLY1) cause a rare disease with multi-symptomatic features including developmental delay, intellectual disability, neuropathy, and seizures. NGLY1s activity in human neural cells is currently not well understood. To understand how NGLY1 gene loss leads to the specific phenotypes of NGLY1 deficiency, we employed direct conversion of NGLY1 patient-derived induced pluripotent stem cells (iPSCs) to functional cortical neurons. Transcriptomic, proteomic, and functional studies of iPSC-derived neurons lacking NGLY1 function revealed several major cellular processes that were altered, including protein aggregate-clearing functionality, mitochondrial homeostasis, and synaptic dysfunctions. These phenotypes were rescued by introduction of a functional NGLY1 gene and were observed in iPSC-derived mature neurons but not astrocytes. Finally, laser capture microscopy followed by mass spectrometry provided detailed characterization of the composition of protein aggregates specific to NGLY1-deficient neurons. Future studies will harness this knowledge for therapeutic development.
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- 2023
26. Global warming induced spread of the highest human fascioliasis hyperendemic area
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Pablo F. Cuervo, M. Dolores Bargues, Patricio Artigas, Paola Buchon, Rene Angles, and Santiago Mas-Coma
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Fasciola hepatica ,Lymnaeid snail vector populations ,Transmission risk ,Forecast indices ,Climatic trends ,Human hyperendemic area ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Climate change is driving the occurrence of several infectious diseases. Within a One Health action to complement the ongoing preventive chemotherapy initiative against human fascioliasis in the Northern Bolivian Altiplano hyperendemic area, field surveys showed a geographical expansion of its lymnaeid snail vector. To assess whether climate change underlies this spread of the infection risk area, an in-depth analysis of the long-term evolution of climatic factors relevant for Fasciola hepatica development was imperative. Methods We used monthly climatic data covering at least a 30-year period and applied two climatic risk indices, the water-budget-based system and the wet–day index, both of verified usefulness for forecasting fascioliasis transmission in this endemic area. To reveal the long-term trends of the climatic factors and forecast indices, we applied procedures of seasonal-trend decomposition based on locally weighed regression and trend analysis on the basis of linear models. To further demonstrate the changes detected, we depicted selected variables in the form of anomalies. Results This study revealed a notorious climatic change affecting most of the hyperendemic area, with a strong impact on crucial aspects of the fascioliasis transmission. Trends in maximum and mean temperatures show significant increases throughout the endemic area, while trends in minimum temperatures are more variable. Precipitation annual trends are negative in most of the localities. Trends in climatic risk indices show negative trends at lower altitudes or when farther from the eastern Andean chain. However, monthly and yearly values of climatic risk indices indicate a permanent transmission feasibility in almost every location. Conclusions Warmer temperatures have enabled lymnaeids to colonize formerly unsuitable higher altitudes, outside the endemicity area verified in the 1990s. Further, drier conditions might lead to an overexploitation of permanent water collections where lymnaeids inhabit, favoring fascioliasis transmission. Therefore, the present preventive chemotherapy by annual mass treatments is in need to widen the area of implementation. This study emphasizes the convenience for continuous monitoring of nearby zones for quick reaction and appropriate action modification. Graphical Abstract
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- 2024
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27. Unidirectional ray polaritons in twisted asymmetric stacks
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J. Álvarez-Cuervo, M. Obst, S. Dixit, G. Carini, A. I. F. Tresguerres-Mata, C. Lanza, E. Terán-García, G. Álvarez-Pérez, L. F. Álvarez-Tomillo, K. Diaz-Granados, R. Kowalski, A. S. Senerath, N. S. Mueller, L. Herrer, J. M. De Teresa, S. Wasserroth, J. M. Klopf, T. Beechem, M. Wolf, L. M. Eng, T. G. Folland, A. Tarazaga Martín-Luengo, J. Martín-Sánchez, S. C. Kehr, A. Y. Nikitin, J. D. Caldwell, P. Alonso-González, and A. Paarmann
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Science - Abstract
Abstract The vast repository of van der Waals (vdW) materials supporting polaritons offers numerous possibilities to tailor electromagnetic waves at the nanoscale. The development of twistoptics—the modulation of the optical properties by twisting stacks of vdW materials—enables directional propagation of phonon polaritons (PhPs) along a single spatial direction, known as canalization. Here we demonstrate a complementary type of directional propagation of polaritons by reporting the visualization of unidirectional ray polaritons (URPs). They arise naturally in twisted hyperbolic stacks with very different thicknesses of their constituents, demonstrated for homostructures of $$\alpha$$ α -MoO3 and heterostructures of $$\alpha$$ α -MoO3 and $$\beta$$ β -Ga2O3. Importantly, their ray-like propagation, characterized by large momenta and constant phase, is tunable by both the twist angle and the illumination frequency. Apart from their fundamental importance, our findings introduce twisted asymmetric stacks as efficient platforms for nanoscale directional polariton propagation, opening the door for applications in nanoimaging, (bio)-sensing, or polaritonic thermal management.
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- 2024
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28. Abordaje de las capacidades perceptivo-motrices como contenido praxeológico en escolares de básica primaria. Una revisión bibliométrica (2015-2023)
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Juan José Cuervo Zapata and Enoc Valentín González Palacio
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capacidades perceptivo-motrices ,educación física ,formación docente ,habilidades motrices básicas ,revisión bibliométrica ,Education (General) ,L7-991 ,Social sciences (General) ,H1-99 - Abstract
El presente estudio tuvo como propósito dar cuenta de la producción científica actual en torno a las capacidades perceptivo-motrices (CPM) presentes en el contexto escolar y deportivo, entre los años 2015-2023. A nivel metodológico, se retomó el enfoque cualitativo, desde una revisión bibliométrica, que contó con la búsqueda de artículos de investigación en la base de datos Scopus, empleando el resumen analítico de investigación (RAI); posteriormente, se trasladó la información a una base de datos en el programa Microsoft Excel 2016 para presentar datos descriptivos; se empleó el Software Atlas ti v.24 para el análisis categórico y, por otro lado, la herramienta de software VOSviewer para la observación y construcción de redes de coocurrencia de términos relacionados a las CPM. En cuanto a los resultados, el refuerzo de las CPM trasciende los beneficios a nivel motor en otras áreas de conocimiento, como es el caso de la lectoescritura; por tal razón, se hace imperativa la estimulación a temprana edad desde la clase de educación física. Finalmente, se encuentran, en las categorías, asociaciones de las CPM con el rendimiento motor, las habilidades motrices básicas y déficits modulares, tanto en los procesos de lenguaje como en la motricidad humana.
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- 2024
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29. A Cross-Sectional Study Using Self-Defining Memories to Explore Personal Identity throughout Adulthood
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Alain Fritsch, Virginie Voltzenlogel, and Christine Cuervo-Lombard
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Little research has examined changes in personal identity over different periods of adult development. The aim of the present cross-sectional study was to target these changes through the characterization of the main dimensions in self-defining memories (SDMs; thematic content, specificity, integrative meaning, tension, contamination/redemption, and emotion) and their interactions. Our final sample was composed of 652 healthy French adults aged from 18 to 97 years, divided into four age groups: young adults (n = 163, M = 23.7 years), middle-aged adults (n = 135, M = 44.0 years), young-old adults (n = 178, M = 64.5 years), and old-old adults (n = 176, M = 79.6 years). Participants were asked to recollect three SDMs. A similar pattern of thematic content was observed throughout adulthood, except for relationship narratives were more frequent in the two younger groups. The findings highlighted that specific and integrated SDMs decreased with age and that tension and contaminative sequences were the most frequent in young adults. Redemptive memories did not significantly differ whatever the age of participants. No clear positivity effect was observed with aging. Finally, an analysis of the correlations among the main SDMs' dimensions showed that specificity correlated positively with tension in young adults and integrative meaning with redemption in young and middle-aged participants. We found no significant correlation between specificity and integration in any age group. For the first time, this study sheds new light on lifelong identity adjustments.
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- 2024
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30. Improving accessibility to radiotherapy services in Cali, Colombia: cross-sectional equity analyses using open data and big data travel times from 2020
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Luis Gabriel Cuervo, Carmen Juliana Villamizar, Daniel Cuervo, Pablo Zapata, Maria B. Ospina, Sara Marcela Valencia, Alfredo Polo, Ángela Suárez, Maria O. Bula, J. Jaime Miranda, Gynna Millan, Diana Elizabeth Cuervo, Nancy J. Owens, Felipe Piquero, Janet Hatcher-Roberts, Gabriel Dario Paredes, María Fernanda Navarro, Ingrid Liliana Minotta, Carmen Palta, Eliana Martínez-Herrera, Ciro Jaramillo, and on behalf of the AMORE Project Collaboration
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Public aspects of medicine ,RA1-1270 - Abstract
Abstract In this study, we evaluated and forecasted the cumulative opportunities for residents to access radiotherapy services in Cali, Colombia, while accounting for traffic congestion, using a new people-centred methodology with an equity focus. Furthermore, we identified 1–2 optimal locations where new services would maximise accessibility. We utilised open data and publicly available big data. Cali is one of South America's cities most impacted by traffic congestion. Methodology: Using a people-centred approach, we tested a web-based digital platform developed through an iterative participatory design. The platform integrates open data, including the location of radiotherapy services, the disaggregated sociodemographic microdata for the population and places of residence, and big data for travel times from Google Distance Matrix API. We used genetic algorithms to identify optimal locations for new services. We predicted accessibility cumulative opportunities (ACO) for traffic ranging from peak congestion to free-flow conditions with hourly assessments for 6–12 July 2020 and 23–29 November 2020. The interactive digital platform is openly available. Primary and secondary outcomes: We present descriptive statistics and population distribution heatmaps based on 20-min accessibility cumulative opportunities (ACO) isochrones for car journeys. There is no set national or international standard for these travel time thresholds. Most key informants found the 20-min threshold reasonable. These isochrones connect the population-weighted centroid of the traffic analysis zone at the place of residence to the corresponding zone of the radiotherapy service with the shortest travel time under varying traffic conditions ranging from free-flow to peak-traffic congestion levels. Additionally, we conducted a time-series bivariate analysis to assess geographical accessibility based on economic stratum. We identify 1–2 optimal locations where new services would maximize the 20-min ACO during peak-traffic congestion. Results: Traffic congestion significantly diminished accessibility to radiotherapy services, particularly affecting vulnerable populations. For instance, urban 20-min ACO by car dropped from 91% of Cali’s urban population within a 20-min journey to the service during free-flow traffic to 31% during peak traffic for the week of 6–12 July 2020. Percentages represent the population within a 20-min journey by car from their residence to a radiotherapy service. Specific ethnic groups, individuals with lower educational attainment, and residents on the outskirts of Cali experienced disproportionate effects, with accessibility decreasing to 11% during peak traffic compared to 81% during free-flow traffic for low-income households. We predict that strategically adding sufficient services in 1–2 locations in eastern Cali would notably enhance accessibility and reduce inequities. The recommended locations for new services remained consistent in both of our measurements. These findings underscore the significance of prioritising equity and comprehensive care in healthcare accessibility. They also offer a practical approach to optimising service locations to mitigate disparities. Expanding this approach to encompass other transportation modes, services, and cities, or updating measurements, is feasible and affordable. The new approach and data are particularly relevant for planning authorities and urban development actors.
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- 2024
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31. Next questions in autophagy
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Cuervo, Ana Maria, Elazar, Zvulun, Evans, Chantell, Ge, Liang, Hansen, Malene, Jäättelä, Marja, Liang, Jin Rui (Amos), Loos, Ben, Mizushima, Noboru, Simon, Anna Katharina, Tooze, Sharon, Yoshimori, Tamotsu, and Nakamura, Shuhei
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- 2024
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32. Bartonella quintana pulmonary native valve endocarditis
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Aranda-Domene, Ramón, Sandoval, Elena, Cuervo, Guillermo, Fernández-Pittol, Mariana, de la María, Cristina García, and Quintana, Eduard
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- 2024
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33. Risk of Asian hornet invasion in Mexico: a proposal for invasive species risk assessment from a spatial perspective
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Ruiz-Utrilla, Zenia P., del-Val, Ek, Equihua, Julián, and Cuervo-Robayo, Ángela P.
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- 2024
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34. Extremity high-grade sarcomas in elderly patients, are they candidates for surgery? Experience in a sarcoma referral center
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Escobar-Mendiola, Daniel, Mediavilla-Santos, Lydia, Pérez-Mañanes, Rubén, Cuervo-Dehesa, Miguel, Vaquero-Martin, Javier, and Calvo-Haro, José
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- 2024
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35. Improving spatial accessibility to health care services in Cali, Colombia: stakeholder assessment of an innovative platform
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Carmen J. Villamizar Jaimes, Luis Gabriel Cuervo, Eliana Martinez Herrera, Lucinda Cash-Gibson, Ciro Jaramillo, and Joan Benach
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health services accessibility ,city planning ,health services research ,colombia ,Medicine ,Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
Objectives. To (i) ascertain stakeholders’ perceptions of the contextual factors and resources necessary to successfully implement the AMORE platform, a tool that provides accessibility assessments for health care services, considering factors such travel time and traffic conditions, and (ii) identify potential barriers to and facilitators for enhancing spatial accessibility to health care services within the Colombian urban context. Methods. In this qualitative study, semi-structured interviews were conducted with a purposive sample of seven key stakeholders. The sample was drawn from individuals involved in development of policies in Colombia, service providers, and users, among others, who had expertise in the field. Interviews were conducted until saturation was reached. Results. The participants had positive views on the appearance of the AMORE platform, highlighting its user-friendly visualization. Suggestions were made about the variables used in the dashboard, the implementation of the platform, potential usage areas, and barriers and facilitators to implementation and use. Barriers included economic, political, and personnel challenges, while facilitators included creating a minimum viable product at a low cost and building interinstitutional and international cooperation. Conclusions. Innovations such as the AMORE platform have the potential to support decision-making processes across various sectors, including public policies and internal processes within private organizations, academia, and the community. However, implementing such a tool has financial, contextual and environmental challenges. The study identified key factors that were considered prerequisites for successfully implementing the AMORE platform in Colombian cities.
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- 2024
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36. Mechanical properties of rubble pile asteroids (Dimorphos, Itokawa, Ryugu, and Bennu) through surface boulder morphological analysis
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Colas Q. Robin, Alexia Duchene, Naomi Murdoch, Jean-Baptiste Vincent, Alice Lucchetti, Maurizio Pajola, Carolyn M. Ernst, R. Terik Daly, Olivier S. Barnouin, Sabina D. Raducan, Patrick Michel, Masatochi Hirabayashi, Alexander Stott, Gabriela Cuervo, Erica R. Jawin, Josep M. Trigo-Rodriguez, Laura M. Parro, Cecily Sunday, Damien Vivet, David Mimoun, Andrew S. Rivkin, and Nancy L. Chabot
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Science - Abstract
Abstract Planetary defense efforts rely on estimates of the mechanical properties of asteroids, which are difficult to constrain accurately from Earth. The mechanical properties of asteroid material are also important in the interpretation of the Double Asteroid Redirection Test (DART) impact. Here we perform a detailed morphological analysis of the surface boulders on Dimorphos using images, the primary data set available from the DART mission. We estimate the bulk angle of internal friction of the boulders to be 32.7 ± 2. 5° from our measurements of the roundness of the 34 best-resolved boulders ranging in size from 1.67–6.64 m. The elongated nature of the boulders around the DART impact site implies that they were likely formed through impact processing. Finally, we find striking similarities in the morphology of the boulders on Dimorphos with those on other rubble pile asteroids (Itokawa, Ryugu and Bennu). This leads to very similar internal friction angles across the four bodies and suggests that a common formation mechanism has shaped the boulders. Our results provide key inputs for understanding the DART impact and for improving our knowledge about the physical properties, the formation and the evolution of both near-Earth rubble-pile and binary asteroids.
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- 2024
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37. Implementation of a hospital-based end-of-life and bereavement care program in a latin American middle-income country. A source of light and compassion in the midst of cloudy times
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Ximena Garcia-Quintero, Eddy Carolina Pedraza, María Isabel Cuervo-Suarez, Isabel Correa^, Justin N. Baker, and Michael J McNeil
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End of life ,Bereavement care ,Low-and middle-income countries ,Children ,Bereaved families ,Pediatric palliative care ,Special situations and conditions ,RC952-1245 - Abstract
Abstract Background The death of a child is one of the most devastating events a family can face, resulting in significant physical and psychosocial morbidity. Bereavement support programs have been developed in high-income contexts to address this need. However, little is known about implementing bereavement programs in low-and middle-income countries (LMICs). Here, we describe the implementation of a bereavement program for parents whose children died due to cancer or other catastrophic illnesses. Methods We conducted a retrospective analysis to describe the implementation of a hospital-based End of Life (EoL) care and bereavement program. This program was developed in several stages, including an assessment of bereaved families, development program guidelines, staff training, piloting of the program, refinement, and standardization. The program was developed between 2019 and 2021 in a nonprofit, teaching hospital and referral center for southwestern Colombia. Results Several tools were developed as key components of the bereavement program: a virtual bereavement course; guidance for EoL and bereavement communication and care, memory making, and follow-up calls; a condolence letter template, and group support workshops. A total of 956 healthcare professionals were trained, 258 follow-up calls to bereaved parents were made, 150 individual psychological follow-ups to parents with complicated grief occurred, 79 condolence letters were sent, and 10 support group workshops were carried out. Challenges were identified and overcome, such as limited resources and staff, and cultural perceptions of death. In 2021, this program received an award by the hospital as the Best Strategy to Humanize Healthcare. Conclusions This study highlights the feasibility of developing and implementing EoL and bereavement care programs for parents and families within hospitals in LMICs. Lack of resources, staff, and training are some of the identified challenges to implementation. Utilizing methodological tools allows us to identify facilitator factors and deliverable outcomes of our EoL and bereavement program. This model provides a valuable framework for resource-limited settings.
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- 2024
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38. Music for Hospitalized Children in Service-Learning: Academic and Personal Implications for Teachers in Training
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Desirée García-Gil, Laura Cuervo, Carolina Bonastre, and Celia Camilli
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service-learning ,music education ,hospitalized children ,case study, higher education ,Arts in general ,NX1-820 - Abstract
Service-learning methodology seeks to achieve a balance between academic learning and the application of the acquired knowledge for the benefit of the community. Our study aims to assess the academic and personal development of the students who participated in the educational experience and identify the benefits it brought to the attended children. The total of 73 participants involved: a) university students of a faculty of education, b) hospitalized children and their families, c) a healthcare worker, and d) several volunteers. We conducted a case study featuring qualitative analysis (based on discussion groups, interviews, and daily narratives), analysis of co-occurrence, and data triangulation. The categories we obtained were related to learning achieved by university students, their personal growth, and the impact of hospital service on the different agents who participated in the experience. Findings suggest that service-learning, along with the positive emotional impact of experiential music learning, was associated with student progress in teacher training and personal development.
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- 2024
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39. Volatile communication in Actinobacteria: a language for secondary metabolism regulation
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Lorena Cuervo, Carmen Méndez, José A. Salas, Carlos Olano, and Mónica G. Malmierca
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Actinobacteria ,Streptomyces sp. ,Volatile compounds ,Metabolites ,Biosynthetic potential ,Secondary metabolism ,Microbiology ,QR1-502 - Abstract
Abstract Background Volatile compounds are key elements in the interaction and communication between organisms at both interspecific and intraspecific levels. In complex bacterial communities, the emission of these fast-acting chemical messengers allows an exchange of information even at a certain distance that can cause different types of responses in the receiving organisms. The changes in secondary metabolism as a consequence of this interaction arouse great interest in the field of searching for bioactive compounds since they can be used as a tool to activate silenced metabolic pathways. Regarding the great metabolic potential that the Actinobacteria group presents in the production of compounds with attractive properties, we evaluated the reply the emitted volatile compounds can generate in other individuals of the same group. Results We recently reported that volatile compounds released by different streptomycete species trigger the modulation of biosynthetic gene clusters in Streptomyces spp. which finally leads to the activation/repression of the production of secondary metabolites in the recipient strains. Here we present the application of this rationale in a broader bacterial community to evaluate volatiles as signaling effectors that drive the activation of biosynthesis of bioactive compounds in other members of the Actinobacteria group. Using cocultures of different actinobacteria (where only the volatile compounds reach the recipient strain) we were able to modify the bacterial secondary metabolism that drives overproduction (e.g., granaticins, actiphenol, chromomycins) and/or de novo production (e.g., collismycins, skyllamycins, cosmomycins) of compounds belonging to different chemical species that present important biological activities. Conclusions This work shows how the secondary metabolism of different Actinobacteria species can vary significantly when exposed in co-culture to the volatile compounds of other phylum-shared bacteria, these effects being variable depending on strains and culture media. This approach can be applied to the field of new drug discovery to increase the battery of bioactive compounds produced by bacteria that can potentially be used in treatments for humans and animals.
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- 2024
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40. Notch signaling regulates UNC5B to suppress endothelial proliferation, migration, junction activity, and retinal plexus branching
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Qanber Raza, Taliha Nadeem, Seock-Won Youn, Bhairavi Swaminathan, Ahana Gupta, Timothy Sargis, Jing Du, Henar Cuervo, Anne Eichmann, Susan L. Ackerman, L. A. Naiche, and Jan Kitajewski
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Retinal angiogenesis ,Notch effectors ,UNC5B ,Endothelial proliferation ,Endothelial migration ,Cell–cell adhesion ,Medicine ,Science - Abstract
Abstract Notch signaling guides vascular development and function by regulating diverse endothelial cell behaviors, including migration, proliferation, vascular density, endothelial junctions, and polarization in response to flow. Notch proteins form transcriptional activation complexes that regulate endothelial gene expression, but few of the downstream effectors that enable these phenotypic changes have been characterized in endothelial cells, limiting our understanding of vascular Notch activities. Using an unbiased screen of translated mRNA rapidly regulated by Notch signaling, we identified novel in vivo targets of Notch signaling in neonatal mouse brain endothelium, including UNC5B, a member of the netrin family of angiogenic-regulatory receptors. Endothelial Notch signaling rapidly upregulates UNC5B in multiple endothelial cell types. Loss or gain of UNC5B recapitulated specific Notch-regulated phenotypes. UNC5B expression inhibited endothelial migration and proliferation and was required for stabilization of endothelial junctions in response to shear stress. Loss of UNC5B partially or wholly blocked the ability of Notch activation to regulate these endothelial cell behaviors. In the developing mouse retina, endothelial-specific loss of UNC5B led to excessive vascularization, including increased vascular outgrowth, density, and branchpoint count. These data indicate that Notch signaling upregulates UNC5B as an effector protein to control specific endothelial cell behaviors and inhibit angiogenic growth.
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- 2024
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41. Heat-altered scent marks of males of a fossorial reptile still allow recognition by females but lose information on male quality
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Martín, José, Navarro-Castilla, Álvaro, de la Concha, Alejandro, Cuervo, José Javier, Barja, Isabel, and López, Pilar
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- 2024
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42. Correction: Improving accessibility to radiotherapy services in Cali, Colombia: cross-sectional equity analyses using open data and big data travel times from 2020
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Luis Gabriel Cuervo, Carmen Juliana Villamizar, Daniel Cuervo, Pablo Zapata, Maria B. Ospina, Sara Marcela Valencia, Alfredo Polo, Ángela Suárez, Maria O. Bula, J. Jaime Miranda, Gynna Millan, Diana Elizabeth Cuervo, Nancy J. Owens, Felipe Piquero, Janet Hatcher‑Roberts, Gabriel Dario Paredes, María Fernanda Navarro, Ingrid Liliana Minotta, Carmen Palta, Eliana Martínez‑Herrera, Ciro Jaramillo, and on behalf of the AMORE Project Collaboration
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Public aspects of medicine ,RA1-1270 - Published
- 2024
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43. Traits of Complex Thinking: A Bibliometric Review of a Disruptive Construct in Education
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Baena-Rojas, Jose Jaime, Ramírez-Montoya, María Soledad, Mazo-Cuervo, Diego Mauricio, and López-Caudana, Edgar Omar
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The purpose of this research is to contextualize the behavior of publications on complex thinking in education. A total of 428 documents compiled in Scopus from 1937 to 2022 were analyzed with a bibliometric study considering criteria such as "complex thinking", "complex thought", and "reasoning for complexity", all combined with education. The results show 153, 47, and 5 publications for each criterion with their related disciplines, citations, types of documents, universities, prominent authors, researching countries, and the general diachronic evolution of the subject, this allows to establish an idea about the implications of the present study according to one of the most important databases in the world. It is concluded that complex thinking and its relationship with education awakens a greater interest in the academy, not only because of its incidence in diverse fields that are nourished by it for the generation of new multidisciplinary knowledge but also because of the published research that demonstrates its transcendence.
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- 2022
44. SB-property on metric structures
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Argoty, Camilo, Berenstein, Alexander, and Ovalle, Nicolas Cuervo
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Mathematics - Logic ,03C45, 03C66 - Abstract
A complete theory $T$ has the Schr\"oder-Bernstein property or simply the SB-property if any pair of elementarily bi-embeddable models are isomorphic. This property has been studied in the discrete first-order setting and can be seen as a first step towards classification theory. This paper deals with the SB-property on continuous theories. Examples of complete continuous theories that have this property include Hilbert spaces and any completion of the theory of probability algebras. We also study a weaker notion, the SB-property up to perturbations. This property holds if any two elementarily bi-embeddable models are isomorphic up to perturbations. We prove that the theory of Hilbert spaces expanded with a bounded self-adjoint operator has the SB-property up to perturbations of the operator and that the theory of atomless probability algebras with a generic automorphism have the SB-property up to perturbations of the automorphism. We also study how the SB-property behaves with respect to randomizations. Finally we prove, in the continuous setting, that if $T$ is a strictly stable theory then $T$ does not have the SB-property.
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- 2023
45. Transformational Leadership and the Learner-Centred Teaching Approach
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Magaña-Medina, Deneb Elí, Aquino-Zúñiga, Silvia Patricia, Valdés-Cuervo, Angel Alberto, and Parra-Pérez, Lizeth Guadalupe
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Adopting learner-centred teaching approaches is important to advance student performance in Mexican rural communities, which have historically been disadvantaged. Yet, little research exists on the factors that might promote the use of this teaching approach. In the study reported on here we examined the associations between principals' transformational leadership, school climate, teacher commitment to learners, and learner-centred teaching practices. In total, 174 teachers were selected from 26 tele-secondaries in the state of Tabasco, Mexico. A structural equation model was calculated. Results do not provide evidence to support a direct association between transformational leadership and the use of learner-centred teaching. However, an indirect relationship was found between the effects of school climate and teacher commitment. These findings indicate that enhancing school climate and teachers' commitment through a transformational leadership style are key to foster an environment for learner-centred teaching.
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- 2021
46. Impact of the deep squat on articular knee joint structures, friend or enemy? A scoping review
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Andrés Rojas-Jaramillo, Daniel A. Cuervo-Arango, Juan D. Quintero, Juan D. Ascuntar-Viteri, Natalia Acosta-Arroyave, Juan Ribas-Serna, Juan José González-Badillo, and David Rodríguez-Rosell
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injury ,physical performance ,osteoarticular health ,range of movement ,resistance training ,sport-related actions ,Sports ,GV557-1198.995 - Abstract
BackgroundThe squat exercise has been shown to improve athletic performance. However, the use of the deep squat has been questioned due to claims that it may cause knee joint injuries. Therefore, the purpose of this scoping review was to synthesize existing literature concerning the impact of deep squats on knee osteoarticular health in resistance-trained individuals.MethodsThis study adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Scoping Reviews (PRISMA-ScR) guidelines. The original protocol was prospectively registered in Figshare (https://doi.org/10.6084/m9.figshare.24945033.v1). A systematic and exhaustive search was conducted in different databases: PubMed, Scopus, Web of Science, and SPORTDiscus. Additional searches were performed in Google Scholar and PEDro. The main inclusion criteria were the following: (1) Articles of experimental, observational, or theoretical nature, including randomized controlled trials, longitudinal studies, case reports, integrative reviews, systematic reviews, and meta-analyses(Primary studies were required to have a minimum follow-up duration of 6 weeks, whereas secondary studies were expected to adhere to PRISMA or COCHRANE guidelines or be registered with PROSPERO; (2) Peer-reviewed articles published between 2000 and 2024; (3) Publications written in English, Spanish and Portuguese; (4) Studies reporting the effects of deep half, parallel or quarter squats on the knee or evaluating squats as a predictor of injury.ResultsThe keyword search resulted in 2,274 studies, out of which 15 met all inclusion criteria. These 15 studies comprised 5 cohort studies, 3 randomized controlled trials, 4 literature or narrative reviews, 1 case study, and 2 systematic reviews, one including a meta-analysis. Overall, the risk of bias (ROB) across these studies was generally low. It is worth noting that only one study, a case study, associated deep squats with an increased risk of injury, the remaining 14 studies showed no negative impact of deep squats on knee joint health.ConclusionThe deep squat appears to be a safe exercise for knee joint health and could be included in resistance training programs without risk, provided that proper technique is maintained.
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- 2024
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47. La experiencia de la ciudadanía que acude a los Centros Comunitarios del Ayuntamiento de Xalapa
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Joaquin Rojas Molina, Elba Alvarado Cuervo, and César León Rodríguez
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Biología del Conocimiento ,Biología del Amor ,Territorio ,Red Social ,Trabajo Comunitario ,Social history and conditions. Social problems. Social reform ,HN1-995 ,Economic history and conditions ,HC10-1085 - Abstract
Este texto es un acercamiento a una realidad contextual; explora la dinámica de la labor -in situ- que se realiza en los Centros Comunitarios del Municipio de Xalapa, Veracruz, desde la experiencia de sus principales actores, los ciudadanos. Nos preguntamos acerca del impacto que tiene el trabajo comunitario desarrollado en estos Centros, desde la perspectiva de la ciudadanía que lo experimenta. Vislumbramos una ciudadanía que se involucra en un proceso que revitaliza sus talentos, el desarrollo de sus capacidades y las actitudes proactivas que inciden en su bienestar personal como colectivo. Sustentamos nuestra visión desde los aportes de la Biología del Conocimiento y la Biología del Amor de Maturana. Concluimos que el territorio ofrece oportunidades para un florecimiento humano, desde la responsabilidad compartida, la transferencia de conocimientos y el desarrollo de habilidades para un nuevo vivir, más sano y pacífico.
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- 2024
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48. Amputation versus circular external fixation in the treatment of diabetic foot with osteomyelitis: a cost and quality-of-life analysis
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Laia López Capdevilla, Alejandro Santamaría Fumas, José Miguel Sales Pérez, Alejandro Domínguez Sevilla, Julio del Corral Cuervo, Carlos Varela-Quintana, María Rabanal Rubio, and Pablo Roza Miguel
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Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Background: Charcot foot is a severe complication of diabetes mellitus. Amputation is associated with 5-year mortality rates as high as 70%, and the overall treatment cost for diabetic foot surpasses that of conditions such as cancer or depression. Objectives: To compare clinical, quality-of-life, and cost outcomes related to Charcot foot management through two distinct treatments: amputation and resection with stabilization using circular external fixation (CEF). Methods: This retrospective study included all adult patients treated at our unit between 2008 and 2022 for acute diabetic foot with infected ulcers. The allocation to treatment groups was based on the timing of patient enrollment. We gathered anthropometric, diagnostic, and surgical data, documenting individualized costs for preoperative, postoperative, and rehabilitation phases. Health status was assessed using the EQ-5D-3L questionnaire, and recorded data included mortality. Results: A total of 31 patients (18 amputations; 13 CEF) were included. Amputees exhibited significantly higher mortality compared to those with a CEF (44.8% vs 7.7%, p = 0.045). The estimated 3-year survival was 60.8% for amputees and 90% for the CEF group (log-rank test, p = 0.096). In terms of quality of life (EQ-5D-3L), amputees reported a reduction of 14.67 points while CEF patients reported an increase of 40.39 points ( p
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- 2024
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49. Assessment of bleeding events in patients receiving DOACs with or without statins to treat venous thromboembolism: insights from the RIETE registry
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Dominique Farge-bancel, R Marqués, M Ortiz, Paolo Prandoni, J Roa, Manuel Monreal, F Couturaud, J Gutierrez, J Pagan, Peter Verhamme, A Aujayeb, Laurent Bertoletti, P Verhamme, M Monreal, S Fonseca, S Pinto, S Soler, A Lorenzo, R Lecumberri, R Otero, P DI MICCO, F Rivera-Cívico, A Molino, P Suchon, C Grange, JA Caprini, J Osorio, Henri Bounameaux, R Valle, F Negro, A Tufano, Remedios Otero, Aitor Ballaz, G Kenet, I Francisco, F Uresandi, G Barillari, Marijan Bosevski, F García-Bragado, E Grau, D Jiménez, A Maestre, A Visonà, J Criado, R Chopard, I Weinberg, M Lumbierres, B Leclercq, H Bounameaux, Farid Rashidi, Abílio Reis, Lucia Mazzolai, P Llamas, MJ Núñez-Fernández, F Dentali, O Espitia, C Siniscalchi, Rosaria Del Giorno, Sanjiv Keller, Carmine Siniscalchi, Luciano Lopez-Jimenez, Ana Cristina Montenegro, Benjamin Brenner, Raquel Barb, Pierpaolo Di Micco, Sebastian Schellong, Inna Tzoran, Radovan Malý, Joseph A. Caprini, Hanh My Bui, MD Adarraga, A Alberich-Conesa, J Aibar, A Alda-Lozano, J Alfonso, C Amado, M Angelina-García, JI Arcelus, A Ballaz, R Barba, C Barbagelata, M Barrón, B Barrón-Andrés, F Beddar-Chaib, A Blanco-Molina, JC Caballero, J Carrillo-Alonso, G Castellanos, L Chasco, C De Ancos, J Del Toro, P Demelo-Rodríguez, C De Juana-Izquierdo, MC Díaz-Pedroche, JA Díaz-Peromingo, A Dubois-Silva, JC Escribano, C Falgá, AI Farfán-Sedano, C Fernández-Aracil, C Fernández-Capitán, B Fernández-Jiménez, JL Fernández-Reyes, MA Fidalgo, C Gabara, F Galeano-Valle, C García-González, A García-Ortega, O Gavín-Sebastián, MA Gil-De Gómez, A Gil-Díaz, C Gómez-Cuervo, A González-Munera, L Guirado, L Hernández-Blasco, L Jara-Palomares, MJ Jaras, I Jou, MD Joya, JL Lobo, L López-Jiménez, P López-Miguel, H López-Brull, JJ López-Núñez, A López-Ruiz, JB LópezSáez, O Madridano, PJ Marchena, M Marcos, M Martín del Pozo, F Martín-Martos, R Martínez-Prado, JM Maza, E Mena, MI Mercado, J Moisés, MV Morales, MS Navas, JA Nieto, M Olid, L Ordieres-Ortega, S Otálora, N Pacheco-Gómez, AC Palomeque, E Paredes, P Parra-Caballero, P Parra-Rosado, JM Pedrajas, C Pérez-Ductor, M Pérez-Pinar, MA Pérez-Jacoiste, ML Peris, ML Pesce, JA Porras, R Puchades, A Rodríguez-Cobo, M Romero-Brugera, P Ruiz-Artacho, N Ruiz-Giménez, J Ruiz-Ruiz, G Salgueiro, T Sancho, V Sendín, P Sigüenza, A Steinherr, S Suárez-Fernández, R Tirado, A TorrentsVilar, MI Torres, J Trujillo-Santos, JF Varona, A Villalobos, P Villares, C Ay, S Nopp, I Pabinger, C Van Edom, A Verstraete, Yoo HHB, AC Montenegro, SN Morales, J Hirmerova, R Malý, L Bertoletti, A BuraRiviere, J Catella, R Le Mao, I Mahé, F Moustafa, L Plaisance, G Sarlon-Bartoli, E Versini, S Schellong, B Brenner, I Tzoran, P Sadeghipour, F Rashidi, A Abenante, M Basaglia, M Bertoni, F Bilora, B Brandolin, M Ciammaichella, D Colaizzo, E Grandone, E Imbalzano, R Pesavento, A Poz, P Prandoni, B Taflaj, B Zalunardo, A Skride, D Kigitovica, J Meireles, M Bosevski, M Zdraveska, L Mazzolai, and HM Bui
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Medicine - Abstract
Objective To evaluate the impact of coadministering statins with direct oral anticoagulants (DOACs) on the risk of major bleeding events in patients with venous thromboembolism (VTE).Design Observational cohort analysis based on a multicentre international registry.Setting Data were extracted from the Registro Informatizado de Enfermedad TromboEmbolica Registry, which involves 205 centres across 27 countries.Participants A total of 73 659 patients diagnosed with VTE were classified based on their anticoagulant therapy (DOACs) versus low-molecular-weight heparin (LMWH) or vitamin K antagonists (VKAs) and concurrent use of statins.Methods Multivariable Cox proportional hazards models adjusted for confounding variables to assess the risk of major bleeding events stratified by the type of anticoagulant use and statin use.Results From October 2013 to February 2023, 73 659 patients were recruited: 2573 were statin users on DOACs, 14 090 were statin users on LMWH or VKA therapy, 10 088 were non-statin users on DOACs and 46 908 were non-statin users on LMWH or VKA therapy. Statin users were 10 years older and more likely to have hypertension, diabetes, renal failure or prior artery disease. During anticoagulation (median, 187 days), 1917 patients (2.6%) suffered major bleeding. Rates of major bleeding per 100 patient-years were 2.33 (95% CI 1.72 to 3.09), 3.75 (95% CI 3.43 to 4.10), 1.39 (95% CI 1.13 to 1.69) and 3.10 (95% CI 2.93 to 3.27), respectively. On multivariable analysis, patients treated with DOACs had a significantly lower risk of major bleeding compared with those on LMWH or VKA therapy (adjusted HR 0.59; 95% CI 0.48 to 0.74). The adjusted HR in statin users versus non-users was 1.03 (95% CI 0.92 to 1.14), while in statin users on DOACs versus the rest of patients, it was 1.18 (95% CI 0.79 to 1.76).Conclusions In patients with VTE receiving statins, long-term anticoagulation with DOACs was associated with a reduced risk of major bleeding, regardless of the statin use. These findings support the safety profile of DOACs over VKAs or LMWH in the management of VTE in patients requiring statins.
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- 2024
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50. Epidemiological analysis of injuries in soccer referees: A systematic review
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Sebastián Rodríguez, Angie Natalia Suarez-Cuervo, Catalina León-Prieto, and María Fernanda Rodríguez-Jaime
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Epidemiology ,Injury ,Soccer ,Soccer referees ,Sports medicine ,RC1200-1245 - Abstract
Objective: To provide a broader epidemiological profile of injuries in male soccer referees by systematically searching for observational scientific studies. Methodology: Searches were conducted in PubMed, Web of Science and Sciencedirect, following PRISMA guidelines. Of the 12,246 studies identified, 5 were included after a selection process. They were evaluated using the STROBE checklist, complemented with the cohort checklist provided by SIGN. Results: A total of 433 head referees and 467 assistant referees were analyzed. The most prevalent injuries among the main referees after the matches were to the Achilles tendon and the ankle/foot, while for the assistants it was in the lower leg. During the physical tests, the most common injuries among the main referees affected the knee, hip and groin, and in the assistants, the hip and groin. The most frequent injuries throughout their careers were in the hip and groin for the main referees, and in the knee for the assistants. In the last twelve months, the most common injury was in the thigh for principals and again in the knee for assistants. Lower leg and Achilles tendon injuries stood out as the most incident over a 12-month period, followed by ankle/foot injuries in both groups. For a 30-day follow-up period, the most frequent injury was in the lower back for both groups. Conclusion: Injuries in soccer referees require meticulous attention, manifesting themselves at different times and in different areas of the body during physical tests, matches and throughout their careers. Registry number: CRD42024547881
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- 2024
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