6,231 results match your criteria: "University of Brasilia.[Affiliation]"

Given the complexity of the behavior of mining tailings dams built by the technique of hydraulic embankments and the recurring dam ruptures globally, especially in Brazil, ensuring enhanced safety through advanced disposal techniques becomes crucial. While the co-disposal method has been extensively explored for various mineral substances, a notable gap exists in the literature concerning its application specifically to tailings and waste rock generated from phosphate mining operations. This study aims to identify the optimal ratio for a mining tailings and waste rock mixture and evaluate its mechanical behavior in comparison to individual materials.

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Objective: In recent years, the application of robotic assistance in diagnostic and therapeutic endovascular neurointerventional procedures has gained notable attention. In this systematic review and meta-analysis, we aim to evaluate the feasibility, safety, and current indications of robotic-assisted neurointerventions and to assess the degree of robotic assistance and reasons for unplanned manual conversion from robotic assistance.

Methods: We searched Medline, Scopus, Web of Science, and Cochrane Library databases following PRISMA guidelines and included studies with ≥ 4 patients reporting on robotic-assisted neurointerventions.

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Degradation of Cylindrospermopsin Spiked in Natural Water (Paranoá Lake, Brasília, Brazil) by Fenton Process: A Bench-Scale Study.

Toxins (Basel)

December 2024

Environmental Technology and Water Resources Postgraduate Program, Department of Civil and Environmental Engineering, University of Brasília, Brasília 70910-900, Brazil.

The frequency and intensity of harmful cyanobacterial blooms have increased in the last decades, posing a risk to public health since conventional water treatments do not effectively remove extracellular cyanotoxins. Consequently, advanced technologies such as the Fenton process are required to ensure water safety. The cyanotoxin cylindrospermopsin (CYN) demands special attention, as it is abundant in the extracellular fraction and has a high toxicological potential.

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The purpose of the study was to identify potential differences between patients with right colon cancer and left colon cancer in epidemiological, clinical presentation, pathological, and surgical results in addition to the impact of the sidedness on disease-free survival (DFS) and overall survival (OS). Patients with a diagnosis of colon cancer stages I-IV between 2010 and 2020 were identified from a prospective database in a tertiary single center. Right and left-sided cancer were compared regarding epidemiological, clinical presentation, pathological, and surgical results.

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Background: Most transgender people face different conditions of health vulnerability on a daily basis. In the Brazilian context, no research review has been found on such situations in the light of the theoretical conceptualization of multidimensional vulnerability. This research aimed to identify and analyze components of social and/or programmatic vulnerability that interfere with access to health care for trans people in Brazil.

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Antioxidant and Antimicrobial Properties of Probiotics: Insights from In Vitro Assays.

Probiotics Antimicrob Proteins

December 2024

Center for Sciences of Imperatriz, Graduate Program in Health and Technology, Federal University of Maranhão, Imperatriz, Maranhão, Brazil.

Probiotics are microorganisms that provide health benefits at adequate doses and exhibit notable antioxidant and antimicrobial activities. These properties play crucial roles in combating chronic diseases linked to oxidative stress and antimicrobial resistance. This review aimed to summarize the antioxidant and antimicrobial properties of probiotics determined in in vitro studies and discuss mechanistic actions and analysis methods.

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Anti-inflammatory and antinociceptive effects of LQFM275 - A new multi-target drug.

Int Immunopharmacol

December 2024

Laboratory of Pharmacology of Natural and Synthetic Products, Institute of Biological Sciences, Federal University of Goiás, Campus Samambaia, Goiânia, Brazil.

Compound (4-(3,5-di-tert-butyl-4-hydroxybenzylamine)benzenesulfonamide) (LQFM275) was designed and synthesized from darbufelone and sulfanilamide as a new multi-target for the treatment of inflammatory diseases. LQFM275 showed a great range of safe cytotoxicity profile (100-400 μM) evaluated by MTT assay, preventing damage induced by lipopolysaccharide (LPS) in EA.hy926 cell line.

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Effectively responding to drug-resistant tuberculosis (TB) requires accurate and timely information on resistance levels and trends. In contexts where use of drug susceptibility testing has not been universal (i.e.

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Dormancy is an adaptation in which cells reduce their metabolism, transcription, and translation to stay alive under stressful conditions, preserving the capacity to reactivate once the environment reverts to favorable conditions. Dormancy and reactivation of () are closely linked to intracellular residency within macrophages. Our previous work showed that murine macrophages rely on the viable but not cultivable (VBNC-a dormancy phenotype) fungus from active , with striking differences in immunometabolic gene expression.

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Electrostatic Orientation of Optically Asymmetric Janus Particles.

ACS Omega

December 2024

Metamaterials Laboratory, Electrical and Computer Engineering Department, Northeastern University, Boston, Massachusetts 02115, United States.

Janus micro- and nanoparticles, featuring unique dual-interface designs, are at the forefront of rapidly advancing fields such as optics, medicine, and chemistry. Accessible control over the position and orientation of Janus particles within a cluster is crucial for unlocking versatile applications, including targeted drug delivery, self-assembly, micro- and nanomotors, and asymmetric imaging. Nevertheless, precise mechanical manipulation of Janus particles remains a significant practical challenge across these fields.

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Introduction: There is consistent evidence that may be a driver gene in B-ALL and that selected cases may benefit from the use of FLT3 inhibitors. Our study was conducted to evaluate the frequency and types of FLT3 mutations in pediatric patients with B-ALL, the relative expression of this gene, and their influence on clinical evolution.

Methods: We evaluated 156 children with B-ALL treated between July 2018 and September 2023.

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Active pharmaceutical ingredients, such as levonorgestrel (LNG), continue to increase in aquatic ecosystems and are detected in environmental matrices; however, their ability to bioaccumulate and cause reproductive, developmental, and biochemical defects in benthic organisms, such as Macrocyclops albidus, is unknown. This study investigated the effects of LNG on the oxidative stress response, reproduction, and development of M. albidus.

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Intimate partner violence (IPV) might increase the risk of depression, traumatic stress and affect cognitive performance. We analyzed the cognitive performance, psychological factors, and personality traits of 136 Brazilian women ( = 70 exposed to IPV and = 66 non-exposed) aged 18 years or older. We utilized clinical interviews, the NEO Personality Inventory, and a neuropsychological testing battery.

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Aim: Gustatory function plays a fundamental role in various aspects related to nutrition and health, and the decline in taste perception can result in a series of adverse consequences. This is expected with aging due to a decrease in taste buds and other conditions, leading to systemic and oral diseases. We aimed to compare taste sensitivity in the elderly population vs.

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Background: Adolescent mental health is vital for public health, yet many interventions fail to recognise adolescents as proactive community contributors. This paper discusses the co-design and acceptability testing of a chat-story intervention to enhance Brazilian adolescents' participation in the promotion of mental health in their peer communities. We specifically highlight the iterative process of co-creating this intervention with community stakeholders.

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Improving serum redox balance, inflammatory status, physical function, and cognitive ability through dual-task resistance training and detraining in nursing home residents.

Exp Gerontol

December 2024

Postgraduate Program in Physical Education, Federal University of Mato Grosso, Cuiabá, MT, Brazil; Laboratory of Molecular Exercise Physiology - Physical Education Department, University Center - UDF, Brasília, Brazil. Electronic address:

Objective: This study investigated the effects of dual-task resistance training (RT) and detraining on physical function, cognitive capacity, lipid profile, renal function, oxidative stress markers, and chronic inflammation of institutionalized older adults.

Methods: The study involved 11 older adults (83.09 ± 8.

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Background: Despite Brazil's recent social progress, access to health services is still unequal. This article analyzes the inter-municipal distances traveled by pregnant women to access delivery services, documenting their magnitude and relationship to socioeconomic and risk factors for over a decade in Brazil.

Methods: Using data between 2007 and 2017 from the Brazilian Information System of Live Births and a matrix of inter-municipal distances, we describe the evolution of (i) the share of pregnant women that traveled across municipalities and (ii) the average distance they traveled.

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A critical review on the symbiotic effect of bacteria and microalgae on treatment of sewage with biofertilizer production.

J Environ Manage

December 2024

Laboratory of Bioremediation and Metagenomics Research (LBMR), Department of Environmental Microbiology (DEM), Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, 226 025, Uttar Pradesh, India. Electronic address:

Wastes like sewage, kitchen and industrial are the major sources of environmental pollution and health hazards. Sewage contains 99.9% water and 0.

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Nasal telangiectatic osteosarcoma with direct extension to the brain in a domestic shorthair cat.

JFMS Open Rep

December 2024

Laboratory of Veterinary Pathology and Forensics, College of Agronomy and Veterinary Medicine (FAV), University of Brasília (UnB), Asa Norte, Federal District, Brazil.

Case Summary: This case report describes the clinical and pathological features of telangiectatic osteosarcoma (TOS) with brain invasion in a 4-year-old female domestic shorthair cat. The cat presented with respiratory distress, epistaxis, anorexia and significant nasal obstruction. A rhinoscopy revealed an amorphous white neoformation in the left nasal cavity.

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The SARS-CoV-2 pandemic has significantly challenged global public health, highlighting the need for effective therapeutic options. This study focuses on the papain-like protease (PLpro) of SARS-CoV-2, which is a critical enzyme for viral polyprotein processing, maturation, and immune evasion. We employed a combined approach that began with computational models in a virtual screening campaign, prioritizing compounds from our in-house chemical library against PLpro.

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The recent synthesis of nitrogen-doped amorphous monolayer carbon (NAMC) opens new possibilities for multifunctional materials. In this study, we have investigated the nitrogen doping limits and their effects on NAMC's structural and electronic properties using density functional-based tight-binding simulations. Our results show that NAMC remains stable up to 35% nitrogen doping, beyond which the lattice becomes unstable.

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Sepsis is a pervasive condition that affects individuals of all ages, with significant social and economic consequences. The early diagnosis of sepsis is fundamental for establishing appropriate treatment and is based on warning scores and clinical characteristics, with positive microbiological cultures being the gold standard. Research has yet to identify a single biomarker to meet this diagnostic demand.

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