18,805 results on '"Pedro A"'
Search Results
2. Predictors of mortality in patients with cardiac device-related infective endocarditis
- Author
-
Oliveira, Gustavo Brandao, Fae, Isabela Galizzi, Carvalho, Vinicius Tostes, Pinto, Pedro Henrique Oliveira Murta, Duque, Roni Arley Silva, Gelape, Fernanda Alves, Cambraia, Fernanda Sophya Leite, Costa, Guilherme Lelis, Diamante, Lucas Chaves, Braulio, Renato, Gelape, Claudio Leo, Sousa, Marcos Roberto, Ferrari, Teresa Cristina Abreu, and Nunes, Maria Carmo Pereira
- Published
- 2024
3. Murine extraparenchymal neurocysticercosis: Appropriate model for evaluating anthelminthic and anti-inflammatory treatment schedules
- Author
-
Oliveira, Vinicius Tadeu, de Camargo Martins, Tatiane, Conceicao, Renato Tavares, Generoso, Diego, de Vasconcelos Machado, Vania Maria, Batah, Sabrina Setembre, Fabro, Alexandre Todorovic, Zanini, Marco Antonio, Sciutto, Edda, Fleury, Agnes, and Filho, Pedro Tadao Hamamoto
- Published
- 2024
4. Impact of neurological complications on long-term outcomes in patients with infective endocarditis
- Author
-
Pinto, Pedro Henrique Oliveira Murta, Fae, Isabela Galizzi, Oliveira, Gustavo Brandao, Duque, Roni Arley Silva, Oliveira, Mauricio Vitor Machado, Barbalho, Luan Salvador Machado, Parreiras, Andre Oliveira, Gelape, Fernanda Alves, Cambraia, Fernanda Sophya Leite, Costa, Guilherme Lelis, Diamante, Lucas Chaves, Braulio, Renato, Gelape, Claudio Leo, Teixeira-Carvalho, Andrea, Ferrari, Teresa Cristina Abreu, and Nunes, Maria Carmo Pereira
- Published
- 2024
5. Infectious diseases and secondary antibody deficiency in patients from a mesoregion of Sao Paulo State, Brazil
- Author
-
Prestes-Carneiro, Luiz Euribel, Carrilho, Paula Andreia Martins, de Barros Torelli, Danielle Francisco Honorato, Bressa, Jose Antonio Nascimento, Parizi, Ana Carolina Gomes, Vieira, Pedro Henrique Meireles, Caliani Sa, Fernanda Miranda, and Ferreira, Mauricio Domingues
- Published
- 2024
6. 'Toxoplasma gondii' in a remote subsistence hunting-based Indigenous community of the Peruvian Amazon
- Author
-
Menajovsky, Maria Fernanda, Espunyes, Johan, Ulloa, Gabriela, Calderon, Maritza, Diestra, Andrea, Malaga, Edith, Munoz, Carmen, Montero, Stephanie, Lescano, Andres G, Santolalla, Meddly L, Cabezon, Oscar, and Mayor, Pedro
- Published
- 2024
7. Effectiveness of using AI-driven hotspot mapping for active case finding of tuberculosis in Southwestern Nigeria
- Author
-
Alege, Abiola, Eneogu, Rupert, Meurrens, Vincent, Budts, Anne-Laure, Pedro, Michael, Daniel, Olugbenga, Idogho, Omokhoudu, Ihesie, Austin, Potgieter, Matthys Gerhardus, Akaniro, Obioma Chijioke, Oyelaran, Omosalewa, Charles, Mensah Olalekan, and Agbaje, Aderonke
- Published
- 2024
8. Factors associated with non-adherence to tuberculosis preventive treatment among adult contacts of pulmonary tuberculosis cases with latent tuberculosis infection in catalonia, spain, in 2019−2021
- Author
-
Plans-Rubio, Pedro, Godoy, Sofia, Toledo, Diana, Domínguez, Angela, Cayla, Joan, Parron, Ignasi, Millet, Joan Pau, and Godoy, Pere
- Published
- 2024
9. Uptake and completion of tuberculosis preventive treatment using 12-dose, weekly isoniazid-rifapentine regimen in Bangladesh: A community-based implementation study
- Author
-
Rahman, Md Toufiq, Hossain, Farzana, Banu, Rupali Sisir, Islam, Md Shamiul, Alam, Shamsher, Faisel, Abu Jamil, Hussain, Hamidah, Roy, Tapash, Salim, Hamid, Cordon, Oscar, and Suarez, Pedro
- Published
- 2024
10. Evaluation of Loop-Mediated Isothermal Amplification (LAMP) in Urine Samples for the Diagnosis of Imported Schistosomiasis
- Author
-
Salas-Coronas, Joaquin, Luzon-Garcia, Maria Pilar, Crego-Vicente, Beatriz, Soriano-Perez, Manuel Jesus, Febrer-Sendra, Begona, Vazquez-Villegas, Jose, Diego, Juan Garcia-Bernalt, Cabeza-Barrera, Isabel Maria, Castillo-Fernandez, Nerea, Muro, Antonio, Bargues, Maria Dolores, and Fernandez-Soto, Pedro
- Published
- 2023
11. Entomological survey and 'Leishmania 'Leishmania) mexicana' prevalence in sand fly species during an outbreak of cutaneous leishmaniasis in Quintana Roo State, Mexico
- Author
-
Caneda-Guzman, Isabel C, de Oca-Aguilar, Ana C Montes, Miranda-Caballero, Carlos I, Grostieta, Estefania, Correa-Morales, Fabian, Romero-Perez, Raquel, Romero-Contreras, Francisco E, Rodriguez-Atanacio, Jose A, Ruiz-Tovar, Karina, Huerta, Heron, Mis-Avila, Pedro C, Quintanilla-Cedillo, Marco R, Lammoglia-Villagomez, Miguel A, Blum-Dominguez, Selene, Tamay-Segovia, Paulino, Rojas-Ronquillo, Rebeca, Sanchez-Montes, Sokani, and Becker, Ingeborg
- Published
- 2023
12. Bioecological aspects of species of the subgenus 'Mansonia (Mansonia)' (Diptera: Culicidae) Prior to the Installation of Hydroelectric Dams on the Madeira River, Rondonia State, Brazil
- Author
-
da Silva Ferreira, Francisco Augusto, da Costa, Fabio Medeiros, Gouveia, Ayrton Sena, Roque, Rosemary Aparecida, Tadei, Wanderli Pedro, and Scarpassa, Vera Margarete
- Published
- 2023
13. The importance of entomo-virological investigation of yellow fever virus to strengthen surveillance in Brazil
- Author
-
Ribeiro Cruz, Ana Cecilia, Hernandez, Leonardo Henrique Almeida, Aragao, Carine Fortes, da Paz, Thito Yan Bezerra, da Silva, Sandro Patroca, da Silva, Fabio Silva, de Aquino, Ana Alice, Cereja, Glennda Juscely Galvao Pereira, Nascimento, Bruna Lais Sena do, Rosa, Jose Wilson, Elias, Carmeci Natalina, Nogueira, Cristiano Gomes, Ramos, Daniel Garkauskas, Fonseca, Vagner, Giovanetti, Marta, Alcantara, Luiz Carlos Junior, Nunes, Bruno Tardelli Diniz, Vasconcelos, Pedro F da Costa, Martins, Livia Caricio, and Nunes-Neto, Joaquim Pinto
- Published
- 2023
14. Leishmaniasis: Immune cells crosstalk in macrophage polarization
- Author
-
Almeida, Fernanda Silva, Vanderley, Shayenne Eduarda Ramos, Comberlang, Fernando Cezar, Andrade, Arthur Gomes de, Cavalcante-Silva, Luiz Henrique Agra, Silva, Edson dos Santos, Palmeira, Pedro Henrique de Sousa, do Amaral, Ian PG, and Keesen, Tatjana SL
- Published
- 2023
15. Vector competence of 'Culex quinquefasciatus' from Brazil for 'West Nile virus'
- Author
-
Reis, Lucia Aline Moura, da Silva, Eliana Vieira Pinto, Dias, Daniel Damous, Freitas, Maria Nazare Oliveira, Caldeira, Rossela Damasceno, Araujo, Pedro Arthur da Silva, da Silva, Fabio Silva, Rosa, Jose Wilson, Brandao, Roberto Carlos Feitosa, Nascimento, Bruna Lais Sena do, Martins, Livia Caricio, and Neto, Joaquim Pinto Nunes
- Published
- 2023
16. Clinical and virological features of SARS-CoV-2 variants during the four waves of the pandemic in the Mexican Southeast
- Author
-
Baeza-Flores, Guadalupe del Carmen, Luna-Arias, Juan Pedro, Ruiz-Quinones, Jesus Arturo, Boldo-Leon, Xavier Miguel, Cedro-Tanda, Alberto, Garnica-Lopez, Dora, Mendoza-Vargas, Alfredo, Magana-Cerino, Jesus M, and Martinez-Lopez, Mirian Carolina
- Published
- 2023
17. 'Does a respiratory virus have an ecological niche, and if so, can it be mapped?: ' Yes and yes
- Author
-
Stephens, Christopher R, Gonzalez-Salazar, Constantino, and Romero-Martinez, Pedro
- Published
- 2023
18. Leishmanicidal activity of guanidine derivatives against leishmania infantum
- Author
-
Almeida, Fernanda Silva, Moreira, Vitor Partite, dos Santos Silva, Edson, Cardoso, Leonardo Lima, de Sousa Palmeira, Pedro Henrique, Cavalcante-Silva, Luiz Henrique Agra, de Araujo, Demetrius AM, do Amaral, Ian PG, Gonzalez, Eduardo Rene Perez, and Keesen, Tatjana SL
- Published
- 2023
19. Characterization of regulatory t cells in patients infected by Leishmania Infantum
- Author
-
Peixoto, Rephany F, Gois, Bruna M, Martins, Marineuma, Palmeira, Pedro Henrique, Rocha, Juliana C, Gomes, Juliana AS, Azevedo, Fatima LAA, Veras, Robson C, de Medeiros, Isac A, Grisi, Teresa CSL, de Araujo, Demetrius AM, Amaral, Ian PG, and Keesen, Tatjana SL
- Published
- 2023
20. The efficacy of vaccination in the prevention of renal and genital leptospirosis in experimentally infected sheep
- Author
-
Martins, Gabriel, Guadelupe, Bruna, Aymee, Luiza, Balaro, Mario Felipe Alvarez, Pinto, Pedro Henrique, Di Azevedo, Maria Isabel Nogueira, Brandao, Felipe Zandonadi, and Lilenbaum, Walter
- Published
- 2022
21. Antileishmanial efficacy of the calpain inhibitor MDL28170 in combination with Amphotericin B
- Author
-
Branquinha, Marta H, Araujo, Pedro SS, Oliveira, Simone SC, Sangenito, Leandro S, Goncalves, Diego S, Seabra, Sergio H, D'Avila-Levy, Claudia M, and Santos, Andre LS
- Published
- 2022
22. Moonlighting in Rickettsiales: Expanding virulence landscape
- Author
-
Matos, Ana Luisa, Curto, Pedro, and Simoes, Isaura
- Published
- 2022
23. A Reusable Capillary Flow-Driven Microfluidic System for Abscisic Acid Detection Using a Competitive Immunoassay.
- Author
-
Domingues, Cristiana, Rodrigues, Marta S. C., Condelipes, Pedro G. M., Fortes, Ana Margarida, Chu, Virginia, and Conde, João Pedro
- Subjects
FLUID control ,MICROFLUIDIC devices ,POLYETHYLENE glycol ,CROP yields ,BIOLOGICAL transport - Abstract
Point-of-care (PoC) devices offer a promising solution for fast, portable, and easy-to-use diagnostics. These characteristics are particularly relevant in agrifood fields like viticulture where the early detection of plant stresses is crucial to crop yield. Microfluidics, with its low reagent volume requirements, is well-suited for such applications. Self-driven microfluidic devices, which rely on capillary forces for fluid motion, offer an attractive alternative by eliminating the need for external pumps and complex fluid control systems. However, traditional microfluidic prototyping materials like polydimethylsiloxane (PDMS) present challenges due to their hydrophobic nature. This paper presents the development of a reusable, portable, capillary-driven microfluidic platform based on a PDMS-PEG (polyethylene glycol) copolymer designed for the rapid low-cost detection of abscisic acid (ABA), a key biomarker for the onset of ripening of non-climacteric fruits and drought stress in vines. By employing passive fluid transport mechanisms, such as capillary-driven sequential flow, this platform enables precise biological and chemical screenings while maintaining portability and ease of use. A simplified field-ready sample processing method is used to prepare the grapes for analysis. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
24. Optimizing Mechanical Ventilation: A Clinical and Practical Bedside Method for the Identification and Management of Patient–Ventilator Asynchronies in Critical Care.
- Author
-
Costa, Vasco, Cidade, José Pedro, Medeiros, Inês, and Póvoa, Pedro
- Subjects
- *
RESPIRATORY mechanics , *ARTIFICIAL respiration , *VENTILATION monitoring , *CARDIAC output , *PROGNOSIS - Abstract
The prompt identification and correction of patient–ventilator asynchronies (PVA) remain a cornerstone for ensuring the quality of respiratory failure treatment and the prevention of further injury to critically ill patients. These disruptions, whether due to over- or under-assistance, have a profound clinical impact not only on the respiratory mechanics and the mortality associated with mechanical ventilation but also on the patient's cardiac output and hemodynamic profile. Strong evidence has demonstrated that these frequently occurring and often underdiagnosed events have significant prognostic value for mechanical ventilation outcomes and are strongly associated with prolonged ICU stays and hospital mortality. Halting the consequences of PVA relies on the correct identification and approach of its underlying causes. However, this often requires advanced knowledge of respiratory physiology and the evaluation of complex ventilator waveforms in patient–ventilator interactions, posing a challenge to intensive care practitioners, in particular, those less experienced. This review aims to outline the most frequent types of PVA and propose a clinical algorithm to provide physicians with a structured approach to assess, accurately diagnose, and correct PVA. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
25. The Prevalence of Metabolic Syndrome and Hypertriglyceridemic Waist Based on Sociodemographic Variables and Healthy Habits in Healthcare Workers: A Retrospective Study.
- Author
-
Tárraga Marcos, Pedro Javier, López-González, Ángel Arturo, Martínez-Almoyna Rifá, Emilio, Paublini Oliveira, Hernán, Martorell Sánchez, Cristina, Tárraga López, Pedro Juan, and Ramírez-Manent, José Ignacio
- Subjects
- *
MEDICAL personnel , *MEDITERRANEAN diet , *NURSES' aides , *METABOLIC syndrome , *PHYSICAL activity - Abstract
Introduction: Metabolic syndrome (MetS) and hypertriglyceridemic waist (HTW) are two multifactorial pathological conditions that have been increasing in prevalence worldwide. The objective of this study was to evaluate how various sociodemographic variables and healthy habits are associated with the presence or absence of MetS and HTW. Methodology: This study employed a mixed-methods approach, consisting of a retrospective longitudinal study and a cross-sectional descriptive study, analyzing 44,939 healthcare workers with MS and HTW across four professional categories to evaluate the relationship between age, sex, smoking, physical activity, and adherence to the Mediterranean diet using three diagnostic criteria. Descriptive analysis included categorical and quantitative variables, which were assessed through frequencies, Student's t-test, chi-square, and binary logistic regression models. Logistic regression and Cohen's kappa were used to evaluate associations and concordances. Age, sex, and lack of physical activity showed the strongest associations with MetS (OR: 2.65–2.84). The results highlight the importance of physical activity and other factors in metabolic prevention. Results: Age, sex, and physical activity were the variables most strongly associated with MetS and HTW across the three evaluated diagnostic criteria. The odds ratios revealed significant values: age (9.07–13.71 for MetS and 13.42 for HTW), sex (2.82–3.31 for MetS and 3.72 for HTW), and physical activity (2.65–2.84 for MetS and 2.40 for HTW). Conclusions: The risk of developing MetS and HTW among healthcare personnel is influenced by lifestyle habits, sex, and age, with the highest ORs observed in nursing assistants and orderlies. Future research that delves deeper into the causal relationship between lifestyle factors and the severity of MetS and HTW in healthcare personnel will improve understanding and facilitate the development of preventive activities to reduce their incidence. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
26. Predictive Analysis of Structural Damage in Submerged Structures: A Case Study Approach Using Machine Learning.
- Author
-
Santos, Alexandre Brás dos, Vasconcelos, Hugo Mesquita, Domingues, Tiago M. R. M., Sousa, Pedro J. S. C. P., Dias, Susana, Lopes, Rogério F. F., Parente, Marco L. P., Tomé, Mário, Cavadas, Adélio M. S., and Moreira, Pedro M. G. P.
- Subjects
MACHINE learning ,SUBMERGED structures ,STRUCTURAL health monitoring ,COMPUTATIONAL fluid dynamics ,STRAIN gages ,FLUID-structure interaction - Abstract
This study focuses on the development of a machine learning (ML) model to elaborate on predictions of structural damage in submerged structures due to ocean states and subsequently compares it to a real-life case of a 6-month experiment with a benthic lander bearing a multitude of sensors. The ML model uses wave parameters such as height, period and direction as input layers, which describe the ocean conditions, and strains in selected points of the lander structure as output layers. To streamline the dataset generation, a simplified approach was adopted, integrating analytical formulations based on Morison equations and numerical simulations through the Finite Element Method (FEM) of the designed lander. Subsequent validation involved Fluid–Structure Interaction (FSI) simulations, using a 2D Computational Fluid Dynamics (CFD)-based numerical wave tank of the entire ocean depth to access velocity profiles, and a restricted 3D CFD model incorporating the lander structure. A case study was conducted to empirically validate the simulated ML model, with the design and deployment of a benthic lander at 30 m depth. The lander was monitored using electrical and optical strain gauges. The strains measured during the testing period will provide empirical validation and may be used for extensive training of a more reliable model. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
27. Intelligent Platform for Automating Vulnerability Detection in Web Applications.
- Author
-
Moreira, Diogo, Seara, João Pedro, Pavia, João Pedro, and Serrão, Carlos
- Abstract
In a world increasingly dependent on technology and in an era where connectivity is omnipresent, Web applications have become an essential part of our everyday life. The evolution of these applications, combined with the exponential increase in the number of users, has brought with it not only convenience but also significant challenges in terms of security. Ensuring the security of Web applications and their data is increasingly a priority for companies, although many companies lack the know-how, time, and money to do so. This research project studied and developed a system with the aim of automating the process of detecting vulnerabilities in Web applications by exploiting the benefits of the interoperability of the two forms of automation of the tool selected to carry out this analysis. The developed solution is low-cost and requires very little user intervention. In order to validate and evaluate the developed platform, experiments were carried out on applications with different types of vulnerabilities known in advance and on real applications. It is essential to guarantee the security of Web applications, and the developed system proved capable of automating the detection of vulnerability risks and returning the results in a relatively simple way for the user. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
28. Underwater Communication Systems and Their Impact on Aquatic Life—A Survey.
- Author
-
Domingos, Feliciano Pedro Francisco, Lotfi, Ahmad, Ihianle, Isibor Kennedy, Kaiwartya, Omprakash, and Machado, Pedro
- Abstract
Approximately 75% of the Earth's surface is covered by water, and 78% of the global animal kingdom resides in marine environments. Furthermore, algae and microalgae in marine ecosystems contribute up to 75% of the planet's oxygen supply, underscoring the critical need for conservation efforts. This review systematically evaluates the impact of underwater communication systems on aquatic ecosystems, focusing on both wired and wireless technologies. It highlights the applications of these systems in Internet of Underwater Things (IoUT), Underwater Wireless Sensor Networks (UWSNs), remote sensing, bathymetry, and tsunami warning systems, as well as their role in reducing the ecological footprint of human activities in aquatic environments. The main contributions of this work include: a benchmark of various underwater communication systems, comparing their advantages and limitations; an in-depth analysis of the adverse effects of anthropogenic emissions associated with communication systems on marine life; and a discussion of the potential for underwater communication technologies, such as remote sensing and passive monitoring, to aid in the preservation of biodiversity and the protection of fragile ecosystems. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
29. Almond Grafting for Plum Pox Virus Resistance Triggers Significant Transcriptomic and Epigenetic Shifts in Peaches.
- Author
-
Corell-Sierra, Julia, Corrêa, Régis L., Gómez, Gustavo G., Elena, Santiago F., Oliveros, Juan C., Rodamilans, Bernardo, Martínez-García, Pedro J., Martínez-Gómez, Pedro, and Rubio, Manuel
- Subjects
STONE fruit ,BUDDING (Plant propagation) ,PRUNUS ,PLUM ,POXVIRUSES ,ALMOND ,PEACH - Abstract
Sharka disease, caused by the plum pox virus (PPV), negatively impacts stone fruit production, resulting in economic losses. It has been demonstrated that grafting the almond (Prunus dulcis (Miller) D.A. Webb) variety 'Garrigues' into susceptible peach (Prunus persica (L.) Batsch) rootstocks can result in PPV resistance. The molecular circuits related to grafting in Prunus species, however, have not been fully investigated. In this study, susceptible peach rootstocks 'GF305' were either heterografted with 'Garrigues' almond or homografted with the same cultivar. Peach samples were collected at two stages of scion development, with ungrafted plants utilized as controls. Profiles of transcripts, small RNAs (sRNAs), and DNA methylation were obtained and analyzed on a genome-wide scale. Homografting and heterografting significantly altered the transcriptome and methylome of peach rootstocks, with these modifications being more pronounced during the early stages of scion development. The profiles of sRNAs were significantly more impacted when almonds were used as a scion as opposed to peaches, likely due to the transmission of PPV-unrelated viral sequences. Gene expression differences resulting from DNA methylation alterations are more thoroughly documented at the promoter sequences of genes than within their bodies. This study suggests that the 'Garrigues' almond variety triggers a complex defense response in the peach rootstock, potentially involving the interplay of epigenetic modifications and small RNA-mediated priming of antiviral defenses, which ultimately may contribute to PPV resistance. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
30. A Conversational Agent for Empowering People with Parkinson's Disease in Exercising Through Motivation and Support.
- Author
-
Macedo, Patricia, Madeira, Rui Neves, Santos, Pedro Albuquerque, Mota, Pedro, Alves, Beatriz, and Pereira, Carla Mendes
- Subjects
SELF-determination theory ,PARKINSON'S disease ,MEDICAL personnel ,SELF-efficacy ,EXERCISE therapy ,CHATBOTS - Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by motor and non-motor symptoms. The MoveONParkinson project aims to enhance exercise engagement among people with Parkinson's Disease (PwPD) in the Portuguese context through the ONParkinson digital platform, which provides mobile and web interfaces. While the broader MoveONParkinson project has been previously described from a health-focused perspective, this study specifically focuses on the development and integration of an AI-driven conversational agent (CA) for the Portuguese language, called PANDORA, within the mobile interface of the solution to assist and motivate PwPD in their exercise routines. PANDORA (Parkinson Assistant in Natural Dialogue and Oriented by Rules and Assessments), designed based on Self-Determination Theory (SDT), addresses the psychological needs of autonomy, competence, and relatedness. A preliminary study involving 20 PwPD, 10 caregivers, and 5 healthcare professionals informed the design requirements for PANDORA. The development process involved four main phases: (1) Design of the Chatbot's Motivation Model, (2) Design and implementation of the conversational agent, (3) Technical Performance Evaluation, and (4) User Experience Evaluation. Technical Performance Evaluation, conducted with three physiotherapists, assessed domain coverage, coherence response capacity, and dialog management capacity, achieving 100% accuracy in domain coverage and coherence response capacity and 89% in dialog management capacity. The User Experience Study involved eight PwPD users recruited from Portuguese healthcare units performing predefined tasks, with user satisfaction scores ranging from 4.2 to 4.9 on a five-point Likert scale. The findings indicate that integrating a conversational agent with motivational cues tends to increase patient engagement. However, further studies are required to determine PANDORA's impact on exercise engagement in PwPD. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
31. Additive Manufacturing of a Frost-Detection Resistive Sensor for Optimizing Demand Defrost in Refrigeration Systems.
- Author
-
Aguiar, Martim Lima de, Gaspar, Pedro Dinis, and Silva, Pedro Dinho da
- Subjects
- *
AERODYNAMIC heating , *INDUSTRIAL controls manufacturing , *HEAT exchangers , *COMPUTER vision , *THREE-dimensional printing - Abstract
This article presents the development of a resistive frost-detection sensor fabricated using Fused Filament Fabrication (FFF) with a conductive filament. This sensor was designed to enhance demand-defrost control in industrial refrigeration systems. Frost accumulation on evaporator surfaces blocks airflow and creates a thermal insulating barrier that reduces heat exchange efficiency, increasing energy consumption and operational costs. Traditional timed defrosting control methods can mitigate these effects but often lead to inefficiencies due to their inability to align with actual frost accumulation, which can vary according to system and environmental conditions. Frost-detection sensors aim to solve this problem by acting as a tool to support defrosting control. A series of tests were conducted to evaluate the sensor's performance in detecting frost under controlled conditions on a heat exchanger (HX). The sensor reliably detected frost in all cases, demonstrating its effectiveness in real-time frost detection. The sensor measurements were validated by comparison with results obtained through a computer vision method, confirming its reliability. It was also found that the sensor can detect temperature changes. This advancement in sensor technology highlights the potential of additive manufacturing to provide cost-effective, customizable, replicable, and compact sensor designs, contributing to improved system performance and energy efficiency in refrigeration systems. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
32. Trends and Innovations in Wearable Technology for Motor Rehabilitation, Prediction, and Monitoring: A Comprehensive Review.
- Author
-
Lobo, Pedro, Morais, Pedro, Murray, Patrick, and Vilaça, João L.
- Subjects
- *
HEALTH facilities , *PARKINSON'S disease , *WEB databases , *WEARABLE technology , *SCIENCE databases - Abstract
(1) Background: Continuous health promotion systems are increasingly important, enabling decentralized patient care, providing comfort, and reducing congestion in healthcare facilities. These systems allow for treatment beyond clinical settings and support preventive monitoring. Wearable systems have become essential tools for health monitoring, but they focus mainly on physiological data, overlooking motor data evaluation. The World Health Organization reports that 1.71 billion people globally suffer from musculoskeletal conditions, marked by pain and limited mobility. (2) Methods: To gain a deeper understanding of wearables for the motor rehabilitation, monitoring, and prediction of the progression and/or degradation of symptoms directly associated with upper-limb pathologies, this study was conducted. Thus, all articles indexed in the Web of Science database containing the terms "wearable", "upper limb", and ("rehabilitation" or "monitor" or "predict") between 2019 and 2023 were flagged for analysis. (3) Results: Out of 391 papers identified, 148 were included and analyzed, exploring pathologies, technologies, and their interrelationships. Technologies were categorized by typology and primary purpose. (4) Conclusions: The study identified essential sensory units and actuators in wearable systems for upper-limb physiotherapy and analyzed them based on treatment methods and targeted pathologies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. An Analysis of Methodological Aspects in the Practice of Nautical Activities in Educational Centers.
- Author
-
Medina-Rebollo, Daniel, Saenz-Lopez Buñuel, Pedro, da Silva Bento, Pedro Jorge Paulino, Fernandez-Gavira, Jesús, and Fernández-Ozcorta, Eduardo José
- Subjects
AQUATIC sports ,EDUCATION methodology ,PHYSICAL education ,DIRECT instruction ,WEATHER - Abstract
Currently, physical and sports activities in natural environments are viewed as valuable resources for combatting sedentary lifestyles, with water sports and related activities offering significant educational potential. However, these activities are not fully integrated into physical education programs, largely due to a lack of training in methodological approaches. This qualitative study interviewed ten stakeholders (including instructors, managers, and teachers from three countries) to analyze key methodological aspects necessary for effective implementation. The results revealed three main findings: (1) direct instruction emerged as the primary teaching approach, incorporating demonstrations and level-appropriate activities; (2) optimal learning occurs in small groups of 8–12 students per instructor; and (3) technical skill development should focus on sailing, kayaking, and paddleboarding. This study identified weather conditions as a key challenge, necessitating flexible planning. Based on these findings, this study provides practical guidelines for implementing water sports in educational settings, emphasizing the importance of structured teaching approaches, appropriate group sizing, and environmental considerations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. Influence of Environmental Conditions on the Behaviour of Tailings from Tungsten Mining for Sustainable Geotechnical Applications and Storage.
- Author
-
Oliveira, João Pedro, Araújo Santos, Luís, Ribeiro, Joana, Coelho, Paulo, and Pedro, António M. G.
- Abstract
Modern societies require increasingly large amounts of minerals and metals for their development. Therefore, huge amounts of waste must be stored in safe and cost-effective massive tailing storage facilities that would benefit from using tailings in sustainable geotechnical applications within the context of the circular economy. However, to consider tailings as assets, the long-term behaviour of these unconventional geomaterials under realistic environmental conditions must be assessed. This paper focuses on the effects of the environmental conditions on the behaviour of tailings from tungsten mining by experimentally determining their major physical and mechanical properties for three different conditions: twenty-months-aged undisturbed samples and reconstituted samples, with the latter being fresh and three months. The results confirm that twenty-months-aged undisturbed and fresh reconstituted tailings have significantly different mechanical behaviour, while three-months-aged reconstituted samples show an in-between behaviour as if the material regenerates and improved its behaviour with time due to physical and chemical processes. These ageing processes are experimentally confirmed by measuring the electrical conductivity in the samples. The results confirm that optimising the design of tailing storage facilities and using these geomaterials in sustainable geotechnical applications must consider the existing environmental conditions and the potential tailings' mechanical changes due to ageing. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. The Role of Guilt Feelings in the Development of the Burnout Process: The Influence on Psychosomatic Problems.
- Author
-
Gil-LaOrden, Pedro, Carlotto, Mary Sandra, and Gil-Monte, Pedro R.
- Subjects
- *
JOB stress , *PSYCHOLOGICAL burnout , *GUILT (Psychology) , *LAZINESS , *EMOTIONS - Abstract
Burnout is a psychological consequence of prolonged work-related stress. Previous studies have concluded that guilt feelings could explain the development of the burnout process and its relationship with other health disorders. The aim of this study was to evaluate the mediating role of guilt feelings in the relationship between burnout and psychosomatic problems. The sample comprised 714 Brazilian teachers (82.10% women). Burnout was assessed using the Spanish Burnout Inventory (SBI). The hypotheses were evaluated together using a path model to test the mediating role of guilt feelings in the development of burnout and its relationship with psychosomatic problems. Two models were constructed: the hypothesized model (i.e., indolence → guilt → psychosomatic problems) vs. the alternative model (i.e., indolence → psychosomatic problems → guilt). According to the results, the hypothesized model obtained a satisfactory fit to the data, whereas the alternative model's fit was found to be inadequate. We concluded that the hypothesized model was a good representation of the relationship among burnout, guilt feelings and psychosomatic problems. We recommend taking into consideration feelings of guilt to improve the diagnosis of burnout. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
36. Effects of Saddle Position on Cycling: An Umbrella Review.
- Author
-
Vigário, Pedro Castro, Ferreira, Ricardo Maia, Sampaio, António Rodrigues, and Martins, Pedro Nunes
- Subjects
- *
LUMBAR pain , *KNEE pain , *KNEE injuries , *RESEARCH personnel , *PERINEUM - Abstract
Objective: This study aimed to perform an umbrella review of existing systematic reviews on the effects of saddle position on cycling. Material and methods: We conducted a systematic search across the electronic databases EBSCO, PubMed, Scopus, Web of Science, and B-On for systematic reviews investigating the effects of saddle position on cycling, following the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. To prevent the risk of bias, two researchers independently performed the search. To evaluate the methodological quality of the included reviews, the Assessing the Methodological Quality of Systematic Reviews 2 (AMSTAR 2) checklist was used. Results: A total of seven systematic reviews that met the eligible criteria were included. The systematic reviews showed high heterogeneity among themselves (e.g., type of included studies, participants' characteristics, or evaluated outcomes) and low to critically low methodological quality. Relationships have been found between the rider's saddle position and health issues (such as low back pain (four studies), knee injury or pain (three studies), lumbar kyphosis (one study), and impact on perineum (two studies)), and on performance alterations (such as, muscle activation, oxygen uptake, load and intensity, efficiency (one study), and comfort (one study)). The results showed that some research provided conflicting evidence in regard to the studied relations (e.g., knee injury or pain, impact on perineum, and efficiency). Conclusions: Cyclists' saddle position impacts various issues related to health and performance. More research is needed, and future studies should focus on the clarification of the conflicting evidence observed in this review. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
37. Sustainable Carbon Dots Loaded into Carboxymethylcellulose Based Hydrogels for Uterine Cancer Bioimaging.
- Author
-
Rodrigues, Jordane S., Brandão, Pedro, Duarte, Sofia O. D., da Silveira, Izabela Boueri, Leite, Maria de Fátima, Gonçalves, Max P., Borsagli, Fernanda G. L. Medeiros, and Fonte, Pedro
- Subjects
- *
FOURIER transform infrared spectroscopy , *X-ray photoelectron spectroscopy , *CIRCULAR economy , *TRANSMISSION electron microscopy , *ULTRAVIOLET-visible spectroscopy - Abstract
Background/Objectives: The development of innovative materials for disease diagnostics and therapeutics is a fast-growing area of scientific research. In this work, we report the development of innovative hydrogels incorporating carbon dots (Cdots) for bioimaging purposes. Methods: The Cdots were prepared using a sustainable and low-cost process, starting with an underused fiber from the Brazilian semiarid region. Spectroscopy analysis (Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, UV-visible spectroscopy), X-ray diffraction, photoluminescence, zeta potential, scanning electron microscopy, and transmission electron microscopy were used to characterize these hydrogels. In addition, biocompatibility using the resazurin assay and cellular uptake by confocal microscopy were evaluated. Results: Our results showed that the Cdots changed the structure and crystallinity of hydrogels, mainly due to heat treatment. In addition, hydrogels' chemical groups suffer red and blue shifts following the Cdots incorporation. Moreover, the Cdots were homogeneously incorporated into the hydrogel matrix. Importantly, the cytotoxicity levels were maintained above 90% (p < 0.01), and cellular uptake studies using HeLa cells demonstrated intracellular fluorescence of both the Cdots and hydrogels after incubation. Additionally, the concentration of Cdots within hydrogels significantly affected fluorescence intensity, even compared with pure Cdots. Conclusions: These results showcase the potential for these hydrogels to be further developed as biomarkers and therapeutic biomaterials for women's health. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
38. Physical Demand Assessment of Volunteer Firefighters During Wildland Firefighting.
- Author
-
Teixeira, Tatiana, Pratas, Pedro, Santos, Joana, Monteiro, Pedro R., Baptista, João Santos, Vaz, Mário A. P., and Guedes, Joana C.
- Subjects
- *
FOREST fire prevention & control , *VOLUNTEER fire fighters , *WILDFIRE fighters , *AEROBIC capacity , *ANAEROBIC threshold , *OXYGEN consumption - Abstract
Wildland firefighting is physically and mentally demanding. The aerobic capacity of firefighters is important due to the demands of the activity and the associated occupational risks. The main objectives of this study were to identify and characterise the physically demanding tasks undertaken by volunteer firefighters during wildland fires (real work conditions). A total of 125 firefighters replied to a survey about sociodemographic, biometric data, and work fitness assessment. A group of 23 was evaluated in a physical stress test using a VO2peak protocol to determine maximum oxygen consumption and ventilatory thresholds. The physical demands and physiological responses were collected during the operations at the firefront (n = 21). The results revealed that wildland firefighting entails physical demands that exceed established reference values, with maximum oxygen uptake exceeding 40%. The cardiovascular strain is particularly notable in tasks performed near the firefront, reflecting fatigue. The physical and cardiac demands associated with forest fire fighting have been demonstrated to contribute to occupational illnesses with prolonged exposure. This study underscores the imperative for interventions to enhance the identification and real-time monitoring of physiological parameters to enhance firefighters' overall health and well-being. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
39. Development of a New Generalizable, Multivariate, and Physical-Body-Response-Based Extreme Heatwave Index.
- Author
-
Cataldi, Marcio, Galves, Vitor Luiz Victalino, Sphaier, Leandro Alcoforado, Garnés-Morales, Ginés, Gallardo, Victoria, Párraga, Laurel Molina, Montávez, Juan Pedro, and Jimenez-Guerrero, Pedro
- Subjects
METEOROLOGICAL services ,DEHYDRATION ,ATMOSPHERIC temperature ,ATMOSPHERIC models ,CLIMATE change & health - Abstract
The primary goal of this study is to introduce the initial phase of developing an impact-based forecasting system for extreme heatwaves, utilizing a novel multivariate index which, at this early stage, already employs a combination of a statistical approach and physical principles related to human body water loss. This system also incorporates a mitigation plan with hydration-focused measures. Since 1990, heatwaves have become increasingly frequent and intense across many regions worldwide, particularly in Europe and Asia. The main health impacts of heatwaves include organ strain and damage, exacerbation of cardiovascular and kidney diseases, and adverse reproductive effects. These consequences are most pronounced in individuals aged 65 and older. Many national meteorological services have established metrics to assess the frequency and severity of heatwaves within their borders. These metrics typically rely on specific threshold values or ranges of near-surface (2 m) air temperature, often derived from historical extreme temperature records. However, to our knowledge, only a few of these metrics consider the persistence of heatwave events, and even fewer account for relative humidity. In response, this study aims to develop a globally applicable normalized index that can be used across various temporal scales and regions. This index incorporates the potential health risks associated with relative humidity, accounts for the duration of extreme heatwave events, and is exponentially sensitive to exposure to extreme heat conditions above critical thresholds of temperature. This novel index could be more suitable/adapted to guide national meteorological services when emitting warnings during extreme heatwave events about the health risks on the population. The index was computed under two scenarios: first, in forecasting heatwave episodes over a specific temporal horizon using the WRF model; second, in evaluating the relationship between the index, mortality data, and maximum temperature anomalies during the 2003 summer heatwave in Spain. Moreover, the study assessed the annual trend of increasing extreme heatwaves in Spain using ERA5 data on a climatic scale. The results show that this index has considerable potential as a decision-support and health risk assessment tool. It demonstrates greater sensitivity to extreme risk episodes compared to linear evaluations of extreme temperatures. Furthermore, its formulation aligns with the physical mechanisms of water loss in the human body, while also factoring in the effects of relative humidity. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
40. Automated Assessment of Pelvic Longitudinal Rotation Using Computer Vision in Canine Hip Dysplasia Screening.
- Author
-
Franco-Gonçalo, Pedro, Leite, Pedro, Alves-Pimenta, Sofia, Colaço, Bruno, Gonçalves, Lio, Filipe, Vítor, McEvoy, Fintan, Ferreira, Manuel, and Ginja, Mário
- Subjects
DOG breeds ,JOINT instability ,COMPUTER vision ,HIP joint ,ARTIFICIAL intelligence - Abstract
Simple Summary: Canine hip dysplasia is a painful condition common in large dog breeds, leading to joint instability and osteoarthritis. Accurate diagnosis is crucial for guiding breeding decisions to help reduce its prevalence. However, evaluating hip health status can be challenging, as minor positioning changes during X-rays can distort images and hinder proper hip joint assessment. In this study, we developed an artificial intelligence tool for the automatic evaluation of pelvic alignment in X-rays. By detecting subtle asymmetries in bone structure, the tool determines whether a dog's hips are properly aligned. Our findings showed that the artificial intelligence tool performed as accurately as an expert human examiner in detecting misalignment. This automated approach could improve the reliability of canine hip dysplasia screenings, saving veterinarians time and reducing misdiagnosis risks due to human error. Ultimately, this technology has the potential to enhance medical care for dogs and support breeders in making more informed choices, contributing to canine health improvements and reducing canine hip dysplasia incidence in future generations. Canine hip dysplasia (CHD) screening relies on accurate positioning in the ventrodorsal hip extended (VDHE) view, as even mild pelvic rotation can affect CHD scoring and impact breeding decisions. This study aimed to assess the association between pelvic rotation and asymmetry in obturator foramina areas (AOFAs) and to develop a computer vision model for automated AOFA measurement. In the first part, 203 radiographs were analyzed to examine the relationship between pelvic rotation, assessed through asymmetry in iliac wing and obturator foramina widths (AOFWs), and AOFAs. A significant association was found between pelvic rotation and AOFA, with AOFW showing a stronger correlation (R
2 = 0.92, p < 0.01). AOFW rotation values were categorized into minimal (n = 71), moderate (n = 41), marked (n = 37), and extreme (n = 54) groups, corresponding to mean AOFA ± standard deviation values of 33.28 ± 27.25, 54.73 ± 27.98, 85.85 ± 41.31, and 160.68 ± 64.20 mm2 , respectively. ANOVA and post hoc testing confirmed significant differences in AOFA across these groups (p < 0.01). In part two, the dataset was expanded to 312 images to develop the automated AOFA model, with 80% allocated for training, 10% for validation, and 10% for testing. On the 32 test images, the model achieved high segmentation accuracy (Dice score = 0.96; Intersection over Union = 0.93), closely aligning with examiner measurements. Paired t-tests indicated no significant differences between the examiner and model's outputs (p > 0.05), though the Bland–Altman analysis identified occasional discrepancies. The model demonstrated excellent reliability (ICC = 0.99) with a standard error of 17.18 mm2 . A threshold of 50.46 mm2 enabled effective differentiation between acceptable and excessive pelvic rotation. With additional training data, further improvements in precision are expected, enhancing the model's clinical utility. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
41. FDM 3D Printing Filaments with pH-Dependent Solubility: Preparation, Characterization and In Vitro Release Kinetics.
- Author
-
Nascimento, Gustavo M., Cardoso, Pedro H. N., da Silva, Eumara M. E., Tavares, Ginetton F., Olivier, Nelson C., Faia, Pedro M., Araújo, Evando S., and Silva, Fabrício S.
- Subjects
FUSED deposition modeling ,CONTROLLED release drugs ,DRUG delivery systems ,MANUFACTURING processes ,THREE-dimensional printing - Abstract
The process of manufacturing drug delivery systems (DDSs) by fused deposition modeling (FDM) with 3D printing requires the availability of a polymeric filament containing the drug of interest. This filament is fused in the printer heating system and used to print polymer/drug volumetric parts. Polymers with pH-dependent solubility are widely known in the literature for their controlled release and drug dissolution-enhancing properties, biocompatibility, and variety of release profiles. Given these characteristics, the study of pH-responsive 3D printing filaments appears as a potential alternative for the development of new 3D printing functional materials for healthcare area applications. In this sense, this work aimed at the preparation and characterization of pH-dependent filaments of the Eudragit E 100 copolymer (E100) containing the model drug Amlodipine (Aml) for potential application in the manufacturing of DDSs by 3D printing. The E100/Aml filaments with two distinct drug concentrations were produced by hot-melt extrusion at 105 °C. The posterior chemical protonation treatment of the filaments for 60 min provided a significant improvement in their flexibility. Microstructural analysis (SEM, XRD, FTIR, and DLS) and thermal studies by DSC proved the feasibility of producing the filaments by hot-melt extrusion without the degradation of their constituent materials. The in vitro dissolution profiles of the E100/Aml samples were evaluated in simulated gastric and intestinal fluids. The facilitated solubility of the polymer in an acidic medium (pH = 1.2) was preserved in the filament form, with rapid and reproducible drug release from the polymer matrix. The saturation of the drug concentration in the medium occurred after 30 min of testing for E100/Aml models. A customized 3D part with geometry and fill control was also printed from E100/Aml filaments as proof of concept. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
42. Nutritional Genomics: Implications for Age-Related Macular Degeneration.
- Author
-
Figueiredo, Inês, Farinha, Cláudia, Barreto, Patrícia, Coimbra, Rita, Pereira, Pedro, Marques, João Pedro, Pires, Isabel, Cachulo, Maria Luz, and Silva, Rufino
- Abstract
Background: Age-related macular degeneration (AMD) is a leading cause of vision loss in older individuals, driven by a multifactorial etiology involving genetic, environmental, and dietary factors. Nutritional genomics, which studies gene-nutrient interactions, has emerged as a promising field for AMD prevention and management. Genetic predispositions, such as variants in CFH, C3, C2/CFB, APOE, and oxidative stress pathways, significantly affect the risk and progression of AMD. Methods: This narrative review synthesizes findings from randomized controlled trials and recent advances in nutritional genomics research. It examines the interplay between genetic predispositions and dietary interventions, exploring how personalized nutritional strategies can optimize AMD management. Results and Discussion: The AREDS and AREDS2 trials demonstrated that supplements, including vitamins C, E, zinc, copper, lutein, and zeaxanthin, can reduce the progression to advanced AMD. Nutritional interventions tailored to genetic profiles show promise: CFH risk alleles may enhance zinc supplementation's anti-inflammatory effects, while APOE variants influence the response to omega-3 fatty acids. Adjusting carotenoid intake, such as lutein and zeaxanthin, based on genetic susceptibility exemplifies emerging precision nutritional approaches. Ongoing research seeks to integrate nutrigenomic testing into clinical settings, enabling clinicians to tailor interventions to individual genetic profiles. Conclusions: Further studies are needed to assess the long-term effects of personalized interventions, investigate additional genetic variants, and develop tools for clinical implementation of nutrigenomics. Advancing these strategies holds the potential to improve patient outcomes, optimize AMD management, and pave the way for precision nutrition in ophthalmology. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
43. Trends in Urban Wild Meat Trade of Chelonians (Turtles and Tortoises) in the Peruvian Amazon.
- Author
-
Mayor, Pedro, Bodmer, Richard, Moya, Kelly, Solis, Samantha, Kirkland, Maire, Perez-Peña, Pedro, Fang, Tula, and Orta-Martínez, Martí
- Subjects
- *
TURTLE eggs , *RAIN forests , *CITY dwellers , *MEAT markets , *POULTRY as food , *TURTLE populations - Abstract
Simple Summary: Turtles provide the rural and urban populations of tropical forests with food and income. We studied one of the largest urban wild meat markets in the Amazon between 2006 and 2018. Turtle meat was the most expensive animal protein, being 50% more costly than the most common fish, Prochilodus nigricans, and 48% more costly than poultry meat. Most of the turtle meat was from Chelonoidis denticulatus (86.3%) and Podocnemis unifilis (13.6%). Eggs from P. unifilis and P. expansa were also sold. Culturally, chelonians are important sources of nutrition and income for rural and urban people in tropical rainforests, but urban trade can cause declines in wild populations. This study analyses the urban chelonian trade and its trends to better understand the impact on free-living populations in the Northern Peruvian Amazon. We studied the urban trade of wild chelonians by conducting 526 days of participant observation and structured questionnaires with the main chelonian vendors in the wet markets of Iquitos between 2006 and 2018. The trade of chelonians decreased by −161.6%, from 22,694 individuals in 2006/07 to 8657 individuals in 2017/18. Chelonoidis denticulatus was the species sold the most (86.3%), followed by Podocnemis unifilis (13.6%). Podocnemis expansa was only sold in 2006/07. River turtle sales increased in the dry season, while sales of Chelonoidis denticulatus decreased. Turtles were the most expensive meat sold in urban markets: 49.7% more expensive than the most frequently consumed fish, Prochilodus nigricans, and 48.4% more expensive than poultry. Turtles represented only 0.19% (SD 0.23) of the index of domestic meat and fish consumption per capita. River turtle eggs are sold by a different set of vendors, and in 2017/18, 570,229 eggs were traded in the market of Belén in Iquitos, equivalent to an approximate lay of 10,418 P. unifilis and 1178 P. expansa females. The high magnitude of the trade of river turtle eggs together with the reduction in their meat trade suggests a prioritization of egg sales, which should improve the conservation of adults, since meat sales can be detrimental to chelonian populations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
44. Prospective Validation and Usability Evaluation of a Mobile Diagnostic App for Obstructive Sleep Apnea.
- Author
-
Amorim, Pedro, Ferreira-Santos, Daniela, Drummond, Marta, and Rodrigues, Pedro Pereira
- Subjects
- *
BAYESIAN analysis , *SLEEP apnea syndromes , *ARTIFICIAL intelligence , *MOBILE apps , *MEDICAL screening - Abstract
Background/Objectives: Obstructive sleep apnea (OSA) classification relies on polysomnography (PSG) results. Current guidelines recommend the development of clinical prediction algorithms in screening prior to PSG. A recent intuitive and user-friendly tool (OSABayes), based on a Bayesian network model using six clinical variables, has been proposed to quantify the probability of OSA. Our aims are (1) to validate OSABayes prospectively, (2) to build a smartphone app based on the proposed model, and (3) to evaluate app usability. Methods: We prospectively included adult patients suspected of OSA, without suspicion of other sleep disorders, who underwent level I or III diagnostic PSG. Apnea–hypopnea index (AHI) and OSABayes probabilities were obtained and compared using the area under the ROC curve (AUC [95%CI]) for OSA diagnosis (AHI ≥ 5/h) and higher severity levels (AHI ≥ 15/h) prediction. We built the OSABayes app on 'App Inventor 2', and the usability was assessed with a cognitive walkthrough method and a general evaluation. Results: 216 subjects were included in the validation cohort, performing PSG levels I (34%) and III (66%). OSABayes presented an AUC of 83.6% [77.3–90.0%] for OSA diagnosis and 76.3% [69.9–82.7%] for moderate/severe OSA prediction, showing good response for both types of PSG. The OSABayes smartphone application allows one to calculate the probability of having OSA and consult information about OSA and the tool. In the usability evaluation, 96% of the proposed tasks were carried out. Conclusions: These results show the good discrimination power of OSABayes and validate its applicability in identifying patients with a high pre-test probability of OSA. The tool is available as an online form and as a smartphone app, allowing a quick and accessible calculation of OSA probability. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
45. Early Acute Kidney Injury in Stroke Patients Submitted to Endovascular Treatment: A Cohort Study.
- Author
-
Oliveira, Marta, Sousa, Miguel, Antunes, Rita, Macedo, Diogo, Belchior, Sabina, Soares, Daniela, de Oliveira Simões, Francisco, Rocha, Mariana, Costa, Henrique, Novo, Joana, Paredes, Ludovina, Barros, Pedro, Pires, Pedro, Castro, Sérgio, Ribeiro, Manuel, Araújo, André, Afreixo, Vera, and Gregorio, Tiago
- Subjects
STROKE patients ,ISCHEMIC stroke ,ACUTE kidney failure ,DISEASE risk factors ,MORTALITY risk factors - Abstract
Background/Objectives: Acute kidney injury (AKI) is a potential complication of cardiovascular disorders and is associated with worse outcome. The aim of this study was to assess the incidence of early AKI after endovascular therapy for acute ischemic stroke, identify predictors for this complication, and test the association between AKI and mortality or death or dependency. Methods: This was a single-center cohort study involving consecutive patients with acute ischemic stroke submitted to endovascular therapy between 2015 and 2022. AKI was defined according to the KDIGO criteria and evaluated at 48 h. Other outcomes of interest were vital status and functional dependency at 3 months using the modified Rankin Scale, with death or dependency being defined as a score > 2. An adjustment for potential confounders was performed using logistic regression. Results: Overall, 1150 patients were included in the analysis, with a mean age of 74 years and a slight female preponderance (56%). The median NIHSS was 15, the mean onset-to-groin time was 392 min, and 92% of patients were successfully recanalized. The overall incidence rate of AKI was 6%. On univariate analysis, patients with AKI were older (p = 0.002), had a longer time to EVT (p = 0.042), higher NIHSS (p = 0.006), higher blood glucose (p = 0.033), and lower baseline glomerular filtration rate (GFR) (p < 0.001). After adjustment for confounders, AKI was independently associated with NIHSS (p = 0.012), time to treatment (p = 0.004), and lower baseline GFR (p < 0.001). AKI was also independently associated with higher mortality (OR = 2.302, p = 0.003). Conclusions: Patients with impaired baseline renal function and more severe stroke are at higher risk of AKI, and AKI begets worse stroke outcome. Better strategies are required to optimize treatment outcome in these patients and avert this vicious cycle. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
46. A Systematic Review of the Literature on Climate Justice: A Comparison Between the Global North and South.
- Author
-
Arruda Filho, Marcos Tavares de, Torres, Pedro Henrique Campello, and Jacobi, Pedro Roberto
- Abstract
This study analyzes the characteristics of publications on climate justice on a global scale and between countries in the North and South, using the guidelines of the PRISMA model. A total of 826 relevant papers were identified in five databases, with 717 from the Global North and 109 from the South. There is a concentration of work in the countries of the Global North. The social and economic disparities between countries in the North and South are reflected in the distribution of publications. The focus of climate justice research in the countries that make up the Global South is mainly on the socio-environmental context and the social vulnerability of the population; in this group, it is the first time that this theme has been expressed in the analysis. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
47. Innovative Strategies for Thermal Energy Optimization and Renewable Energy Integration in Net-Zero-Energy Buildings: A Comprehensive Review.
- Author
-
Hamdane, Samia, Pires, Luís C., Gaspar, Pedro D., and Silva, Pedro D.
- Subjects
SUSTAINABILITY ,CLEAN energy ,RENEWABLE energy sources ,ENERGY management ,CLIMATIC zones ,ENERGY consumption of buildings - Abstract
The thermal performance and energy efficiency of buildings are critical factors in achieving sustainable energy systems as energy needs for heating and cooling are expected to represent more than 50% of global final energy consumption. This study analyzes conventional renewable energy systems for heating and cooling in buildings, focusing on strategies for developing net-zero-energy buildings. This review covers the integration of renewable energy, the use of intelligent energy management systems, and the optimization of thermal processes. It also compares various systems based on their advantages and limitations and analyzes emerging trends in the thermal management of buildings in different climate zones. The synthesis of recent literature highlights practical recommendations for achieving high thermal performance in buildings, including the importance of selecting appropriate energy systems based on local climatic conditions, optimizing system efficiency, and taking advantage of new materials and advanced technologies. This review aims to contribute to promoting sustainable construction practices with the integration of renewable energy sources and improving the energy efficiency of buildings. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
48. Polyneuropathy in Cerebrotendinous Xanthomatosis: Diagnostic Challenges and Potential for Therapeutic Intervention.
- Author
-
Camelo-Filho, Antonio Edvan, Lima, Pedro Lucas Grangeiro Sá Barreto, Cavalcante, Francisco Luciano Honório Barreto, Miyajima, Oliver Reiks, Santos, Carolina Figueiredo, da Rosa, Rodrigo Fagundes, Pessoa, André Luiz Santos, Braga-Neto, Pedro, and Nóbrega, Paulo Ribeiro
- Subjects
- *
NERVE conduction studies , *PERIPHERAL nervous system , *CHENODEOXYCHOLIC acid , *NEURAL conduction , *SYMPTOMS - Abstract
Cerebrotendinous xanthomatosis (CTX) is a rare metabolic disorder caused by mutations in the CYP27A1 gene, leading to cholestanol accumulation in various tissues, including peripheral nerves. Polyneuropathy is an underrecognized feature with considerable variability in clinical presentation and neurophysiological findings in CTX. This review assesses the prevalence, clinical manifestations, and diagnostic methodologies of polyneuropathy in CTX, exploring its underlying mechanisms and potential treatment outcomes. A literature review was conducted using PubMed, Embase, and the Virtual Health Library databases with search terms related to CTX and polyneuropathy. A total of 892 articles were initially identified, with 59 selected for in-depth analysis. The review focused on studies examining peripheral nerve involvement in CTX, including nerve conduction studies, electromyography, and nerve ultrasound. Polyneuropathy in CTX was observed in 50% to 77.7% of patients across multiple case series. Neurophysiological findings varied, with reports of axonal, demyelinating, and mixed polyneuropathies. Clinical presentation included lower limb atrophy, pes cavus, and distal weakness, with sensory symptoms less frequently reported. Treatment with chenodeoxycholic acid (CDCA) showed potential in improving nerve conduction parameters, although the response was variable and dependent on the timing of intervention. Polyneuropathy in CTX presents significant diagnostic challenges due to its heterogeneous presentation and varying neurophysiological findings. Early recognition and intervention are crucial for improving patient outcomes. Peripheral nerve ultrasound is a promising diagnostic tool, complementing traditional neurophysiological assessments. Further research is needed to standardize protocols and explore the full therapeutic potential of CDCA in managing CTX-related polyneuropathy. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
49. Exploring the Relationship Between CAIDE Dementia Risk and EEG Signal Activity in a Healthy Population.
- Author
-
Manuel, Alice Rodrigues, Ribeiro, Pedro, Silva, Gabriel, Rodrigues, Pedro Miguel, and Nunes, Maria Vânia Silva
- Subjects
- *
DISEASE risk factors , *COGNITIVE testing , *COGNITION disorders , *TEST validity , *DEMENTIA - Abstract
Background: Accounting for dementia risk factors is essential in identifying people who would benefit most from intervention programs. The CAIDE dementia risk score is commonly applied, but its link to brain function remains unclear. This study aims to determine whether the variation in this score is associated with neurophysiological changes and cognitive measures in normative individuals. Methods: The sample comprised 38 participants aged between 54 and 79 (M = 67.05; SD = 6.02). Data were collected using paper-and-pencil tests and electroencephalogram (EEG) recordings in the resting state, channels FP1 and FP2. The EEG signals were analyzed using Power Spectral Density ( P S D )-based features. Results: The CAIDE score is positively correlated with the relative power activation of the θ band and negatively correlated with the MMSE cognitive test score, and MMSE variations align with those found in distributions of EEG-extracted P S D -based features. Conclusions: The findings suggest that CAIDE scores can identify individuals without noticeable cognitive changes who already exhibit brain activity similar to that seen in people with dementia. They also contribute to the convergent validity between CAIDE and the risk of cognitive decline. This underscores the importance of early monitoring of these factors to reduce the incidence of dementia. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. Machine Learning-Driven GLCM Analysis of Structural MRI for Alzheimer's Disease Diagnosis.
- Author
-
Oliveira, Maria João, Ribeiro, Pedro, and Rodrigues, Pedro Miguel
- Subjects
- *
MAGNETIC resonance imaging , *MILD cognitive impairment , *ALZHEIMER'S disease , *ANATOMICAL planes , *MACHINE learning - Abstract
Background: Alzheimer's disease (AD) is a progressive and irreversible neurodegenerative condition that increasingly impairs cognitive functions and daily activities. Given the incurable nature of AD and its profound impact on the elderly, early diagnosis (at the mild cognitive impairment (MCI) stage) and intervention are crucial, focusing on delaying disease progression and improving patients' quality of life. Methods: This work aimed to develop an automatic sMRI-based method to detect AD in three different stages, namely healthy controls (CN), mild cognitive impairment (MCI), and AD itself. For such a purpose, brain sMRI images from the ADNI database were pre-processed, and a set of 22 texture statistical features from the sMRI gray-level co-occurrence matrix (GLCM) were extracted from various slices within different anatomical planes. Different combinations of features and planes were used to feed classical machine learning (cML) algorithms to analyze their discrimination power between the groups. Results: The cML algorithms achieved the following classification accuracy: 85.2% for AD vs. CN, 98.5% for AD vs. MCI, 95.1% for CN vs. MCI, and 87.1% for all vs. all. Conclusions: For the pair AD vs. MCI, the proposed model outperformed state-of-the-art imaging source studies by 0.1% and non-imaging source studies by 4.6%. These results are particularly significant in the field of AD classification, opening the door to more efficient early diagnosis in real-world settings since MCI is considered a precursor to AD. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.