264 results on '"Artur Ribeiro"'
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2. O impacto do rodízio de auditoria no gerenciamento de resultados em empresas brasileiras com auditoria especializada e não especializada
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Jheneffer Silva Santos Duarte, Artur Ribeiro de Assunção, and Lúcio de Souza Machado
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Rodízio de auditoria ,Gerenciamento de resultados ,Auditoria especializada ,Auditoria não especializada. ,Accounting. Bookkeeping ,HF5601-5689 - Abstract
Objetivo: Identificar a influência da troca de auditoria no gerenciamento de resultados em empresas que possuem auditoria especializada e auditoria não especializada. Método: Foi levantada uma amostra de 126 empresas listadas no Novo Mercado da B3, por conta de seu alto nível de governança e por apresentar um nível diferenciado de transparência e governança, exigidos pelos investidores, entre os anos de 2015 e 2019. Utilizou-se o modelo de Jones Modificado de Dechow, Sloan e Sweeney (1995) para o cálculo de gerenciamento de resultados por meio de accruals e o modelo usado por Chen, Lin e Zhou (2005) para o cálculo da especialização. Já o rodízio de auditoria foi coletado do Relatório de Referência, caracterizando-se como uma dummy. Originalidade/ Relevância: Ainda há distinção de identificar a especialização de auditor como um fator de impacto para detecção de gerenciamento e distorções, faltando um padrão nos resultados encontrados até o ano de 2016. Resultados: Por meio do modelo pooled de regressão de dados em painel, os resultados apontaram que o rodízio de auditoria não influencia na diminuição de gerenciamento de resultados e que também não há suporte necessário para afirmar que o rodízio de auditoria impacta em menor gerenciamento de resultados em empresas com auditoria especializada. Tais resultados são explicados possivelmente pelo compartilhamento de dados dos clientes entre as firmas de auditoria e pelas características da especialização não serem suficientes para comprovar esta relação. Contribuições teóricas/ metodológicas/ práticas: O estudo contribui com os stakeholders, auxiliando-os a identificar as melhores empresas para investimento com base na sua troca de auditoria, especialização da firma de auditoria e clareza nas informações contábeis. O artigo contribui ainda com uma expansão de novos resultados para a literatura do rodízio de auditoria e o gerenciamento de resultados quando ponderados pela especialização da firma de auditoria.
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- 2024
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3. Nanostructured Lipid Carriers Enriched Hydrogels for Skin Topical Administration of Quercetin and Omega-3 Fatty Acid
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Marlene Lúcio, Nicole Giannino, Sérgio Barreira, José Catita, Hugo Gonçalves, Artur Ribeiro, Eduarda Fernandes, Isabel Carvalho, Hugo Pinho, Fátima Cerqueira, Marco Biondi, and Carla M. Lopes
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quercetin ,omega-3 fatty acids ,skin topical administration ,nanostructured lipid carriers (NLCs) ,antioxidant ,photoprotective ,Pharmacy and materia medica ,RS1-441 - Abstract
Chronic skin exposure to external hostile agents (e.g., UV radiation, microorganisms, and oxidizing chemicals) may increase oxidative stress, causing skin damage and aging. Because of their well-known skincare and protective benefits, quercetin (Q) and omega-3 fatty acids (ω3) have attracted the attention of the dermocosmetic and pharmaceutical sectors. However, both bioactives have inherent properties that limit their efficient skin delivery. Therefore, nanostructured lipid carriers (NLCs) and enriched PFC® hydrogels (HGs) have been developed as a dual-approach vehicle for Q and/or ω3 skin topical administration to improve bioactives’ stability and skin permeation. Two NLC formulations were prepared with the same lipid composition but differing in surfactant composition (NLC1—soy lecithin and poloxamer 407; NLC2—Tween® 80 and dioctyl sodium sulfosuccinate (DOSS)), which have an impact on physicochemical properties and pharmaceutical and therapeutic performance. Despite both NLCs presenting high Q loading capacity, NLC2′s physicochemical properties make them more suitable for topical skin administration and ensure longer colloidal stability. Additionally, NLC2 demonstrated a more sustained Q release, indicating higher bioactive storage while improving permeability. The occlusive effect of NLCs-enriched HGs also has a positive impact on skin permeability. Q-loaded NLC2, with or without ω3, -enriched HGs demonstrated efficacy as antioxidant and photoprotective formulations as well as effective reduction in S. aureus growth, indicating that they constitute a promising approach for topical skin administration to prevent skin aging and other damaging cutaneous processes.
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- 2023
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4. FUNÇÃO SEXUAL, SEXUALIDADE E QUALIDADE DE VIDA SEXUAL EM MULHERES VIVENDO COM HIV
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Maria Castilho Prandini Hernandes de Andrade, Artur Ribeiro Canasiro, Loic Monginet Toledo, Marina Abellan Van Moorsel, Vivian Iida Avelino-Silva, Edson Santos Ferreira Filho, and Theo Lerner
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Infectious and parasitic diseases ,RC109-216 ,Microbiology ,QR1-502 - Abstract
Introdução/Objetivos: A qualidade de vida sexual é um dos pilares da qualidade de vida. A sexualidade em mulheres vivendo com HIV (MVHIV) pode ser afetada pelo medo de infectar parceiros ou de adquirir outras infecções sexualmente transmissíveis, por sentimentos de culpa, raiva ou vergonha e por comorbidades. Esse estudo teve como objetivo avaliar e comparar a prevalência de disfunções sexuais em mulheres vivendo com HIV (MVHIV) e mulheres sem diagnóstico de HIV. Método: Recrutamos mulheres com ou sem diagnóstico de infecção por HIV com idade ≥ 18 anos, atendidas em serviços ambulatoriais do Hospital das Clínicas da FMUSP. As participantes responderam a um questionário composto por variáveis sociodemográficas, clínicas e da qualidade de vida sexual, incluindo versão adaptada do Female Sexual Function Index (FSFI). O FSFI contém 19 questões referentes às atividades sexuais nas últimas 4 semanas, sumarizadas em um escore que varia de 2 a 36 pontos, com pontuação mais elevada correspondendo a melhor qualidade de vida sexual. Resultados: Foram incluídas 53 MVHIV com idade mediana de 49 anos e 86 mulheres sem diagnóstico de HIV com idade mediana de 41 anos (p < 0,001). Dentre as MVHIV, apenas 42% relataram ter tido relações sexuais no último mês, comparado com 71% entre mulheres sem HIV (p = 0,001). Não observamos diferenças estatisticamente significantes entre os grupos nas respostas à pergunta sobre satisfação sexual geral no último mês. Em relação ao FSFI, o escore mediano foi de 5,0 (intervalo interquartil [IIQ] 3,2-28,4) no grupo de MVHIV e 24,0 (IIQ 11,9-28,5) entre mulheres sem HIV (p = 0,015). Conclusões: Observamos diferença estatisticamente significante no escore do FSFI de mulheres vivendo com e sem HIV, com menor pontuação entre MVHIV. É necessário refletir sobre as limitações do FSFI como ferramenta para avaliação da qualidade de vida sexual feminina. O questionário pontua 0 para 15 das 19 questões caso a participante não tenha tido relações sexuais no último mês. No nosso estudo, a porcentagem de MVHIV sem relações sexuais no último mês foi maior do que a porcentagem observada entre mulheres sem HIV, refletindo o escore mais baixo do FSFI. Alguns autores sugerem o não uso do FSFI para mulheres que não tiveram relação sexual no último mês. Paralelamente, a pergunta sobre satisfação sexual geral não demonstrou diferenças entre os dois grupos, reforçando o questionamento sobre a validade do FSFI para a avaliação da qualidade de vida sexual feminina.
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- 2022
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5. Photocatalytic performance of N-doped TiO2nano-SiO2-HY nanocomposites immobilized over cotton fabrics
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Salmon Landi, Jr., Joaquim Carneiro, Olivia S.G.P. Soares, Manuel F.R. Pereira, Andreia C. Gomes, Artur Ribeiro, António M. Fonseca, Pier Parpot, and Isabel C. Neves
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Mining engineering. Metallurgy ,TN1-997 - Abstract
This work reports the synthesis of nanocomposite photocatalytic materials based on nitrogen-doped TiO2nano, SiO2 and different percentages of HY zeolite (0, 12, 25 and 50%). These materials were characterized by using Fourier transformed infrared spectroscopy, X-ray diffraction, N2 adsorption–desorption, UV-vis diffuse reflectance spectroscopy and scanning electron microscopy. The nanocomposites, which presented an energy band gap of about 3.03 eV, were immobilized on cotton fabric and their self-cleaning properties were investigated by decolourization of rhodamine B (RhB) dye in aqueous solution under simulated solar irradiation. The fabrics coated with the photocatalysts, containing and not containing zeolites, showed the same RhB decolourization (about 95%) after 5 h, excluding the situation where a large amount of HY (50%) was used in the nanocomposites. However, results obtained from high performance liquid chromatography analysis depicted that in the presence of the HY zeolite a more effective RhB degradation was achieved. In fact, even after the use of five consecutive cycles, the RhB decolourization remained high (about 85%). Generally, the photodegradation of RhB solution in the presence of cotton fabrics functionalized with TiO2nano, TiO2nano-SiO2 and TiO2nano-SiO2-0.25 HY resulted in the formation of products that exhibited a similar cytotoxic effect when compared to the untreated RhB solution and subjected to the same tested concentrations and incubation times. Keywords: Photocatalysis, Textile functionalization, TiO2-SiO2, HY zeolite, Rhodamine B, Cytotoxic
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- 2019
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6. Satureja montana Essential Oil, Zein Nanoparticles and Their Combination as a Biocontrol Strategy to Reduce Bacterial Spot Disease on Tomato Plants
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Paulo R. Oliveira-Pinto, Nuno Mariz-Ponte, Rose Marie O. F. Sousa, Ana Torres, Fernando Tavares, Artur Ribeiro, Artur Cavaco-Paulo, Manuel Fernandes-Ferreira, and Conceição Santos
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Satureja montana ,essential oil ,zein nanoparticles ,nanoformulation ,bacterial spot ,Solanum lycopersicum ,Plant culture ,SB1-1110 - Abstract
Tomato bacterial spot (Bs), caused by Xanthomonas spp., including X. euvesicatoria (Xeu) remains a major threat for tomato production. The emergence of copper resistance strains of Xeu calls urgently for eco-friendly phytosanitary treatments as sustainable green alternatives for disease control. Satureja spp. essential oil (EO) has antimicrobial activity against xanthomonads and combined with zein nanoparticles (ZNPs), might offer a viable option for field applications. This study aims to evaluate the effects of S. montana EO, of ZNPs, and their combination in a nanoformulation, on Xeu quantity, and how these compounds modulate molecular and physiological changes in the pathosystem. Uninfected and infected tomato plants (var. Oxheart) were treated with EO; ZNPs and nanoformulation (EO + ZNPs). Treatments reduced Xeu amount by a minimum of 1.6-fold (EO) and a maximum of 202-fold (ZNPs) and improved plants’ health. Nanoformulation and ZNPs increased plants’ phenolic content. ZNPs significantly increased GPX activity and reduced CAT activity. Overall treatments upregulated transcripts of the phenylpropanoid pathway in infected plants, while ZNPs and nanoformulation upregulated those transcripts in uninfected plants. Both sod and aao transcripts were downregulated by treatments in infected plants. These findings demonstrate that S. montana EO, ZNPs and their nanoformulation are suitable to integrate tomato bacterial spot management strategies, mainly due to their antimicrobial activity on Xeu, however further field studies clarifying the long-term action of these products are required. These results also support the prophylactic potential of ZNPs on tomato bacterial spot.
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- 2021
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7. Development of Capacitive-Type Sensors by Electrochemical Anodization: Humidity and Touch Sensing Applications
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Joaquim O. Carneiro, Artur Ribeiro, Filipe Miranda, Iran Rocha Segundo, Salmon Landi, Vasco Teixeira, and Manuel F. M. Costa
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capacitive-type sensor ,sensitivity ,anodization ,nanoporous anodic alumina ,Chemical technology ,TP1-1185 - Abstract
This work describes the development of a capacitive-type sensor created from nanoporous anodic aluminium oxide (NP-AAO) prepared by the one-step anodization method conducted in potentiostatic mode and performed in a low-cost homemade system. A series of samples were prepared via an anodization campaign carried out on different acid electrolytes, in which the anodization parameters were adjusted to investigate the effect of pore size and porosity on the capacitive sensing performance. Two sensor test cases are investigated. The first case explores the use of highly uniform NP-AAO structures for humidity sensing applications while the second analyses the use of NP-AAO as a capacitive touch sensor for biological applications, namely, to detect the presence of small “objects” such as bacterial colonies of Escherichia Coli. A mathematical model based on equivalent electrical circuits was developed to evaluate the effect of humidity condensation (inside the pores) on the sensor capacitance and also to estimate the capacitance change of the sensor due to pore blocking by the presence of a certain number of bacterial microorganisms. Regarding the humidity sensing test cases, it was found that the sensitivity of the sensor fabricated in a phosphoric acid solution reaches up to 39 (pF/RH%), which is almost three times higher than the sensor fabricated in oxalic acid and about eight times higher than the sensor fabricated in sulfuric acid. Its improved sensitivity is explained in terms of the pore size effect on the mean free path and the loss of Brownian energy of the water vapour molecules. Concerning the touch sensing test case, it is demonstrated that the NP-AAO structures can be used as capacitive touch sensors because the magnitude of the capacitance change directly depends on the number of bacteria that cover the nanopores; the fraction of the electrode area activated by bacterial pore blocking is about 4.4% and 30.2% for B1 (E. Coli OD600nm = 0.1) and B2 (E. Coli OD600nm = 1) sensors, respectively.
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- 2021
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8. Polymeric Electrospun Fibrous Dressings for Topical Co-delivery of Acyclovir and Omega-3 Fatty Acids
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Tiago Costa, Artur Ribeiro, Raul Machado, Clarisse Ribeiro, Senentxu Lanceros-Mendez, Artur Cavaco-Paulo, Andreia Almeida, José das Neves, Marlene Lúcio, and Teresa Viseu
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acyclovir ,omega-3 fatty acids ,electrospinning ,poly (ε-caprolactone) ,polymeric fibrous dressings ,Biotechnology ,TP248.13-248.65 - Abstract
Herpetic infections caused by Herpes simplex virus (HSV) are among the most common human infections, affecting more than two quarters of the world's population. The standard treatment for orofacial herpes is the administration of antiviral drugs, mainly acyclovir (ACV). However, current products are mostly based on semisolid formulations that have limited ability to promote drug skin penetration and tend to leak from the application site, thus showing reduced ability to sustain local drug residence. This work reports on the production of poly (ε-caprolactone) (PCL) fibrous matrices with ACV and omega-3 fatty acids (ω3) for application as dressings to the topical treatment of orofacial herpes. PCL fibrous matrices with the co-incorporated bioactive compounds were obtained by electrospinning and characterized regarding their morphology, chemical, physical, and mechanical properties. The potential use of the developed polymeric fibrous matrices for topical applications was evaluated by: (i) the release kinetics of the bioactive compounds; (ii) the occlusive factor of the fibrous mat; (iii) ACV skin permeation capacity; and (iv) the cytotoxicity in a keratinocyte cell line. PCL fibrous matrices loaded with the bioactive compounds presented a smooth morphology and a good balance between flexibility and hardness essential to be durable for handling, while having a desirable texture to be used comfortably. The fibrous mat also provided a sustained release of ACV during 96 h and improved the skin permeability of this drug (Kp = 0.00928 ± 0.000867 cm/h) presenting also high porosity (74%) and a water vapor transmission rate (WVTR) of 881 ± 91 g/m2day, essential to maintain moist and oxygen for faster healing of herpes lesions. Furthermore, cytotoxicity studies suggest that the fibrous mat are safe for topical application. Overall, the PCL based electrospun fibrous matrices with ACV and ω3 hereby described have the potential to be used as therapeutic bandage systems for the treatment of orofacial herpes.
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- 2019
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9. Science, Data, and Case-Studies under the Third Science Revolution: Some Theoretical Considerations
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Artur Ribeiro
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Big Data ,revolution ,theory ,case-study ,quantitative ,qualitative ,Archaeology ,CC1-960 - Abstract
The Third Science Revolution described by Kristian Kristiansen (2014) has been openly embraced and is currently underway in archaeology. It has brought considerable improvement in terms of scientific methods and approaches, but at the same time, it brings with it the risk of transforming archaeology into something that is methodologically uniform, inflexible, and oversimplified, or in other words, a methodologically monistic discipline. This is particularly evident when it comes to Big Data: the Third Science Revolution has inaugurated a new understanding of data, one that reduces archaeological reality exclusively to those elements that are quantifiable. The aim of this paper is to demonstrate that archaeology needs to go beyond Big Data, and the Third Science revolution in general, and embody qualitative research. This can be done by incorporating methods and theories from history and anthropology that contextualize the purposeful character of past human action. This requires (re)embracing case-study research, but also recognizing a meaning of ‘case-study’ that has been largely ignored: as a paradigmatic example of a Zeitgeist - a context where different institutions, power relations, and ideologies are all entwined.
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- 2019
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10. Crystallin Fusion Proteins Improve the Thermal Properties of Hair
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Ana Tinoco, José Gonçalves, Carla Silva, Artur Cavaco-Paulo, and Artur Ribeiro
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proteins ,γD-crystallin ,hair ,thermal damage ,protection ,keratin-based peptide ,Biotechnology ,TP248.13-248.65 - Abstract
Styling hair with straightening irons is a popular daily hair routine that significantly damage the hair keratin fiber due to the high temperature applied. In this study, we investigate the effect of two fusion proteins based on the human eye γD-crystallin conjugated with a keratin-based peptide (KP-Cryst Wt and KP-Cryst Mut) on hair exposed to thermal damage. The mutant form was designed to improve protein stability and promote interaction with the hair. Through the study, it was demonstrated the protection of Asian and Caucasian virgin hair's structure by the pretreatments with the KP-Cryst fusion proteins. After hair thermal exposure, a higher water content was quantified by TGA on the hair fibers pretreated with the fusion proteins (about 38% for the KP-Cryst Wt and 44% for the KP-Cryst Mut). Also, negligible alterations in hair fibers' stiffness were observed after iron application, demonstrating the proteins capacity to effectively prevent the conversion of keratin α-helix structure into β-sheets. The results proved the capacity of the fusion proteins to bind to hair and protect it against high temperatures', supporting the development of new formulations based on the KP-Cryst proteins.
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- 2019
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11. Design of a chromogenic substrate for elastase based on split GFP system—Proof of concept for colour switch sensors
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Ana V. Ferreira, Egipto Antunes, Artur Ribeiro, Teresa Matamá, Nuno G. Azoia, Joana Cunha, and Artur Cavaco-Paulo
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Biotechnology ,TP248.13-248.65 - Abstract
Recent studies have demonstrated that human neutrophil elastase (HNE) can be used as marker for inflammation/infection of chronic wounds since it was found to be present in high concentration in exudate collected from chronic wounds. Biosensors used in wound care benefit from a chromogenic signalling due to the readiness of signal interpretation, but the most common use faint yellow chromogenic molecules such as p-nitroaniline (pNa). In addition, if to be converted into smart dressings, the colour of the detection system should not be masked by the exudate’s colour.In this work, we designed a chromogenic substrate for HNE aiming to be incorporated in a smart dressing as a colour switch sensor. The substrate was developed using the GFP-like chromoprotein ultramarine (UM), following the split GFP technology. The cleavage sequence for HNE (Ala-Ala-Pro-Val) was embedded into the sensing moiety of the substrate corresponding to the 11th β-sheet. In the presence of HNE, the 11th β-sheet is able to interact to the signalling moiety composed of the β1-β10 incomplete barrel, allowing the re-establishment of the chromophore environment and, hence, the colour production. Structural homology and molecular dynamics simulations were conducted to aid on the disclosure of the structural changes that are the base of the mechanism of action of this HNE switch substrate. Our findings explore the possible application of GFP-like chromogenic sensors in point-of-care devices for the evaluation of the wounds status, representing a major step in the medical field. Keywords: Human neutrophil elastase (HNE), Split GFP, Chromogenic GFP-like proteins, Ultramarine (UM), Proteases, Molecular dynamics simulations
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- 2019
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12. Omega-3- and Resveratrol-Loaded Lipid Nanosystems for Potential Use as Topical Formulations in Autoimmune, Inflammatory, and Cancerous Skin Diseases
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Ana R. Caldas, José Catita, Raul Machado, Artur Ribeiro, Fátima Cerqueira, Bruno Horta, Rui Medeiros, Marlene Lúcio, and Carla M. Lopes
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resveratrol ,omega 3 ,topical skin administration ,lipid nanosystems ,COX inhibitors ,NO inhibitory effect ,Pharmacy and materia medica ,RS1-441 - Abstract
Resveratrol (RSV) and omega 3 (ω3), because of their biological favorable properties, have become subjects of interest for researchers in dermocosmetic and pharmaceutical industries; however, these bioactives present technological limitations that hinder their effective delivery to the target skin layer. To overcome the stability and skin permeation limitations of free bioactives, this work proposes a combined strategy involving two different lipid nanosystems (liposomes and lipid nanoparticles) that include ω3 in their lipid matrix. Additionaly, RSV is only encapsulated in liposomes that provid an adequate amphiphilic environment. Each formulation is thoroughly characterized regarding their physical–chemical properties. Subsequently, the therapeutic performance of the lipid nanosystems is evaluated based on their protective roles against lipid peroxidation, as well as inhibition of cicloxygenase (COX) and nitric oxid (NO) production in the RWA264.7 cell line. Finally, the lipid nanosystems are incorporated in hydrogel to allow their topical administration, then rheology, occlusion, and RSV release–diffusion assays are performed. Lipid nanoparticles provide occlusive effects at the skin surface. Liposomes provide sustained RSV release and their flexibility conferred by edge activator components enhances RSV diffusion, which is required to reach NO production cells and COX cell membrane enzymes. Overall, the inclusion of both lipid nanosystems in the same semisolid base constitutes a promising strategy for autoimmune, inflammatory, and cancerous skin diseases.
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- 2021
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13. Absence of Light Exposure Increases Pathogenicity of Pseudomonas aeruginosa Pneumonia-Associated Clinical Isolates
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Cristina S. Mesquita, Artur Ribeiro, Andreia C. Gomes, and Pedro M. Santos
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cytotoxicity ,host–pathogen interaction ,light exposure ,pathogenicity ,photobiology ,Pseudomonas aeruginosa ,Biology (General) ,QH301-705.5 - Abstract
Pseudomonas aeruginosa can alter its lifestyle in response to changes in environmental conditions. The switch to a pathogenic host-associated lifestyle can be triggered by the luminosity settings, resorting to at least one photoreceptor which senses light and regulates cellular processes. This study aimed to address how light exposure affects the dynamic and adaptability of two P. aeruginosa pneumonia-associated isolates, HB13 and HB15. A phenotypic characterization of two opposing growth conditions, constant illumination and intensity of full-spectrum light and total absence of light, was performed. Given the nature of P. aeruginosa pathogenicity, distinct fractions were characterized, and its inherent pathogenic potential screened by comparing induced morphological alterations and cytotoxicity against human pulmonary epithelial cells (A549 cell line). Growth in the dark promoted some virulence-associated traits (e.g., pigment production, LasA proteolytic activity), which, together with higher cytotoxicity of secreted fractions, supported an increased pathogenic potential in conditions that better mimic the lung microenvironment of P. aeruginosa. These preliminary findings evidenced that light exposure settings may influence the P. aeruginosa pathogenic potential, likely owing to differential production of virulence factors. Thus, this study raised awareness towards the importance in controlling light conditions during bacterial pathogenicity evaluation approaches, to more accurately interpret bacterial responses.
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- 2021
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14. Proteins as Hair Styling Agents
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Ana Tinoco, André F. Costa, Salomé Luís, Madalena Martins, Artur Cavaco-Paulo, and Artur Ribeiro
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hair ,proteins ,perming efficiency ,perming resistance ,green formulations ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
The perming of hair is a common styling procedure with negative impact on the overall properties of the hair fibers. Usually, this process uses harsh chemicals to promote the disruption of disulfide bonds and the formation of new bonds to change the shape of hair. Here, we explored bovine serum albumin (BSA), silk fibroin (SF), keratin and two fusion recombinant proteins (KP-UM and KP-Cryst) as new perming agents. A phosphate buffer prepared at different pH values (5, 7 and 9) was used to apply the proteins to virgin Asian hair, and a hot BaByliss was used to curl the hair fibers. To assess the potential of the protein formulations for hair styling, the perming efficiency and the perming resistance to wash were measured. Furthermore, the fiber water content was evaluated to assess if the proteins protected the hair during the styling process. Despite all of the proteins being able to assist in the curling of Asian hair, the best perming efficiency and perming resistance to wash results were observed for BSA and keratin. These proteins showed perming efficiency values close to that measured for a commercial perming product (chemical method), particularly at pH 5 and 9. The increase in the hair’s internal and external water contents revealed a protective effect provided by the proteins during the application of heat in the styling procedure. This study shows the potential of proteins to be used in the development of new eco-friendly hair styling products.
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- 2021
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15. Potential responses and resilience of Late Chalcolithic and Early Bronze Age societies to mid-to Late Holocene climate change on the southern Iberian Peninsula
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Mara Weinelt, Jutta Kneisel, Julien Schirrmacher, Martin Hinz, and Artur Ribeiro
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mid Holocene climate change ,western Mediterranean ,Bronze Age ,Chalcolithic ,resilience ,Environmental technology. Sanitary engineering ,TD1-1066 ,Environmental sciences ,GE1-350 ,Science ,Physics ,QC1-999 - Abstract
In this investigation, we use a socio-environmental multi-proxy approach to empirically test hypotheses of recurrent resilience cycles and the role of climate forcing in shaping such cycles on the Iberian Peninsula during mid-Holocene times. Our approach combines time series reconstructions of societal and environmental variables from the southern Iberian Peninsula across a 3000 yr time interval (6000–3000 cal yr BP), covering major societal and climate reorganisation. Our approach is based on regional compilations of climate variables from diverse terrestrial archives and integrates new marine climate records from the Western Mediterranean. Archaeological variables include changes in material culture, settlement reconstructions and estimates of human activities. In particular, both detailed chronologies of human activities evolving from the Late Neolithic to the Bronze Age and mid- to Late Holocene climate change across the mid-Holocene are compared, aiming to assess potential human responses and coping processes associated with abrupt mid-Holocene climate changes.
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- 2021
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16. Littérature et éducation : le processus formatif du Fakir de Romain Puértolas
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Artur Ribeiro Gonçalves and Teresa Salvado de Sousa
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roman ,picaresque ,éducation littéraire ,éducation par la littérature ,French literature - Italian literature - Spanish literature - Portuguese literature ,PQ1-3999 - Abstract
L’extraordinaire voyage du Fakir qui est resté coincé dans une armoire Ikea, de Romain Puértolas, met en scène un fakir indien en quête d’un lit à clous à Paris.Prétexte pour un voyage à travers les difficultés de la contemporanéité, les heurs et malheurs du Fakir, héros picaresque, pendant son voyage, amusent et instruisent.Cet article propose de lire l’œuvre dans le cadre défini par le roman picaresque et d’en proposer la lecture à des étudiants non spécialistes en littérature, visant des objectifs d’éducation littéraire tout autant que des objectifs d’éducation par lalittérature (linguistiques, discursifs, esthétiques, d’analyse sociale). Le parcours formatif, par l’agencement des activités de réception, interaction et production, favorise la réflexion et la transformation du lecteur et s’inscrit dans la continuité du principe classique – amuser et instruire.
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- 2015
17. Rational Development of Liposomal Hydrogels: A Strategy for Topical Vaginal Antiretroviral Drug Delivery in the Context of HIV Prevention
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Maria J. Faria, Raul Machado, Artur Ribeiro, Hugo Gonçalves, Maria Elisabete C. D. Real Oliveira, Teresa Viseu, José das Neves, and Marlene Lúcio
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drug release ,emtricitabine ,hydrogels ,liposomes ,microbicides ,nanomedicine ,tenofovir disoproxil fumarate ,topical PrEP ,Pharmacy and materia medica ,RS1-441 - Abstract
HIV/AIDS stands as a global burden, and vaginal microbicides constitute a promising strategy for topical pre-exposure prophylaxis. Preceding the development of a microbicide containing tenofovir disoproxil fumarate (TDF) and emtricitabine (FTC), in silico and in vitro studies were performed to evaluate the physicochemical characteristics of both drugs, and to study their biophysical impact in lipid model systems. Results from these pre-formulation studies defined hydrogels as adequate vehicles to incorporate TDF-loaded liposomes and FTC. After studying interactions with mucin, zwitterionic liposomes with a mean diameter of 134 ± 13 nm, an encapsulation TDF efficiency of approximately 84%, and a transition temperature of 41 °C were selected. The chosen liposomal formulation was non-cytotoxic to HEC-1-A and CaSki cells, and was able to favor TDF permeation across polysulfone membranes (Jss = 9.9 μg·cm−2·h−1). After the incorporation of TDF-loaded liposomes and FTC in carbomer hydrogels, the drug release profile was sustained over time, reaching around 60% for both drugs within 3−6 h, and best fitting the Weibull model. Moreover, liposomal hydrogels featured pseudoplastic profiles that were deemed suitable for topical application. Overall, the proposed liposomal hydrogels may constitute a promising formulation for the vaginal co-delivery of TDF/FTC.
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- 2019
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18. Increased production of chitinase by a Paenibacillus illinoisensis isolated from Brazilian coastal soil when immobilized in alginate beads
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da Silva, Francenya Kelley Lopes, de Sa Alexandre, Artur Ribeiro, Casas, Ariadine Amorim, Ribeiro, Maycon Carvalho, de Souza, Keili Maria Cardoso, Soares, Enio Saraiva, Dos Santos Junior, Samuel Rodrigues, Vieira, Jose Daniel Gonçalves, and Amaral, Andre Correa
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- 2022
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19. Overweight and Obesity Contribute to Inflammation and Reduction in Mean Corpuscular Volume and Mean Corpuscular Hemoglobin in Schoolchildren.
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Fernandes, Bárbara Leles, Cozer, Alexandre Wallace Dias, Vasconcelos Souza, Filipe Caldeira, Santiago, Luana Dias, Lima, Marlucy Rodrigues, Leite, Pauline Martins, Silveira, Alda Maria Soares, Enes, Barbara Nery, Ottoni, Marcelo Henrique Fernandes, Gama, Rafael Silva, and Gomides, Thalisson Artur Ribeiro
- Subjects
IRON in the body ,IRON metabolism ,SCHOOL children ,LEUKOCYTES ,OBESITY - Abstract
Background: The inflammation associated with overweight and obesity seems to alter iron metabolism, but there are few studies evaluating those conditions in children. Thus, we aimed to evaluate the leukometric, immunological, and hematimetric parameters of overweight and obese schoolchildren. Methods: This is a cross-sectional study in which 39 children living in Chonim de Cima (Brazil) underwent anthropometric, hematological, and immunological assessments. The evaluated parameters were compared between the study group (overweight/obesity, n = 15) and the control group (n = 24). Unpaired t-test, Mann–Whitney test, and linear regression were used for statistical tests, and the panoramic profile was used to illustrate differences between groups. Results: The study group had lower mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) and higher TNF levels compared to the control group. Positive correlations were observed between BMI-for-age percentile and total leukocytes (r = 0.1493; p = 0.0151) or neutrophils (r = 0.1395; p = 0.0192). Negative correlations between the BMI-for-age percentile and MCV (r = 0.1464; p = 0.0162) and MCH (r = 0.1460; p = 0.0164) were found. Furthermore, through the panoramic profile, it was noted that the study group had a higher frequency of individuals with high levels of TNF and lower frequencies of individuals with increased hemoglobin and serum iron. Conclusions: Our data suggest that overweight and obesity contribute to a pro-inflammatory context (leukocytes, neutrophils, and TNF) and MCV and MCH reduction in schoolchildren. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Effects of Iron-Fortified Foods on the Nutritional Status of Children Residing in Regions Vulnerable to Parasitic Diseases: A Systematic Review
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Cozer, Alexandre Wallace Dias, primary, Souza, Filipe Caldeira Vasconcelos, additional, Santiago, Luana Dias, additional, Lima, Marlucy Rodrigues, additional, Pimenta, Sabrina Julie, additional, Fernandes, Bárbara Leles, additional, Enes, Barbara Nery, additional, Gama, Rafael Silva, additional, and Gomides, Thalisson Artur Ribeiro, additional
- Published
- 2024
- Full Text
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21. Characteristics and outcomes of patients with COVID-19 admitted to the ICU in a university hospital in São Paulo, Brazil - study protocol
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Hirota, Adriana, Kanasiro, Alberto Kendy, Crescenzi, Alessandra, Fernandes, Amanda Coelho, Miethke-Morais, Anna, Bellintani, Arthur Petrillo, Canasiro, Artur Ribeiro, Carneiro, Bárbara Vieira, Zanbon, Beatriz Keiko, Batista, Bernardo Pinheiro De Senna Nogueira, Nicolao, Bianca Ruiz, Besen, Bruno Adler Maccagnan Pinheiro, Biselli, Bruno, Macedo, Bruno Rocha De, Toledo, Caio Machado Gomes De, Pompilio, Carlos Eduardo, Carvalho, Carlos Roberto Ribeiro De, Mol, Caroline Gomes, Stipanich, Cassio, Bueno, Caue Gasparotto, Garzillo, Cibele, Tanaka, Clarice, Forte, Daniel Neves, Joelsons, Daniel, Robira, Daniele, Costa, Eduardo Leite Vieira, Silva, Elson Mendes Da, Júnior, Regalio, Fabiane Aliotti, Segura, Gabriela Cardoso, Marcelino, Gustavo Brasil, Louro, Giulia Sefrin, Ho, Yeh-Li, Ferreira, Isabela Argollo, Gois, Jeison de Oliveira, Silva, Joao Manoel Da, Junior, Reusing, Jose Otto, Junior, Ribeiro, Julia Fray, Ferreira, Juliana Carvalho, Galleti, Karine Vusberg, Silva, Katia Regina, Isensee, Larissa Padrao, Oliveira, Larissa dos Santos, Taniguchi, Leandro Utino, Letaif, Leila Suemi, Lima, Lígia Trombetta, Park, Lucas Yongsoo, Chaves, Lucas, Netto, Nobrega, Luciana Cassimiro, Haddad, Luciana, Hajjar, Ludhmila, Malbouisson, Luiz Marcelo, Pandolfi, Manuela Cristina Adsuara, Park, Marcelo, Carmona, Maria José Carvalho, Andrade, Maria Castilho Prandini H De, Santos, Mariana Moreira, Bateloche, Matheus Pereira, Suiama, Mayra Akimi, Oliveira, Mayron Faria de, Sousa, Mayson Laercio, Louvaes, Michelle, Huemer, Natassja, Mendes, Pedro, Lins, Paulo Ricardo Gessolo, Santos, Pedro Gaspar Dos, Moreira, Pedro Ferreira Paiva, Guazzelli, Renata Mello, Reis, Renato Batista Dos, Oliveira, Renato Daltro De, Roepke, Roberta Muriel Longo, Pedro, Rodolpho Augusto De Moura, Kondo, Rodrigo, Rached, Samia Zahi, Fonseca, Sergio Roberto Silveira Da, Borges, Thais Sousa, Ferreira, Thalissa, Cobello, Vilson, Junior, Sales, Vivian Vieira Tenório, Ferreira, Willaby Serafim Cassa, Ferreira, Juliana C., Besen, Bruno A.M.P., Malbuisson, Luiz M.S., Taniguchi, Leandro U., Mendes, Pedro V., Costa, Eduardo L.V., Daltro-Oliveira, Renato, Roepke, Roberta M.L., Silva, João M., Jr, Carmona, Maria José C., and Carvalho, Carlos Roberto Ribeiro
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- 2020
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22. AS ECTONUCLEOTIDASES NA ESQUISTOSSOMOSE MANSÔNICA: UMA CONTRIBUIÇÃO TEÓRICA
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Cardoso, Daniel Madeira, primary, Silva Junior, Robson Jose da, additional, Hooper, Breno Carvalho, additional, Silva, Eduarda Cunha e, additional, Andrade, Kesia Cristina Araujo, additional, Andrade, Lara Maruse do Monte, additional, and Gomides, Thalisson Artur Ribeiro, additional
- Published
- 2021
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23. PUBLICAÇÕES SOBRE ESQUISTOSSOMOSE NA SCOPUS: MAPEAMENTO, CARACTERIZAÇÃO E ANÁLISE DA PROGRESSÃO TEMPORAL DO TEMA APLICADO À MEDICINA E IMUNOLOGIA AO LONGO DA SÉRIE HISTÓRICA DE 2015 A 2019
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Cardoso, Daniel Madeira, primary, Quarto, Lucas Capita, additional, Lopes, Mariana Guedes, additional, Lara, Júlia Madeira, additional, Souza, Sônia Maria da Fonseca, additional, and Gomides, Thalisson Artur Ribeiro, additional
- Published
- 2020
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24. Postmodernity: Archaeology in Late Capitalist Times
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Artur Ribeiro
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Archeology - Published
- 2023
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25. A conversation with Koji Mizoguchi. On globalization, Japanese archaeology and archaeological theory today
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Artur Ribeiro
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Archeology ,Arts and Humanities (miscellaneous) ,Geography, Planning and Development - Abstract
On the occasion of a short research trip to Japan, I had the opportunity to sit down with Professor Koji Mizoguchi in Kyushu University, Fukuoka, to discuss several topics, which you will find transcribed below. I was curious as to his thoughts that he – as the President of the World Archaeological Congress, a non-governmental and non-profit organization that promotes the exchange of archaeological results, training at a global scale and the empowerment of Indigenous and minority groups, a Professor of Social Archaeology, and one of the few archaeologists writing archaeological theory in the far East – had on the state of the art of archaeology today. Furthermore, since I grew up in Europe but nevertheless feel a deep connection with my own Asian ancestry, I was very interested in Mizoguchi’s own experience and contributions to archaeology in Japan and the world.
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- 2023
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26. A INFLUÊNCIA DA REDE SOCIAL INSTAGRAM NA CONSTRUÇÃO DA PERSONALIDADE E SEUS DANOS À PRODUÇÃO DA SUBJETIVIDADE
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Silva, Victor Artur Ribeiro da, primary, Silva, Iorran Patrick Guedes do Nascimento, additional, and Correia, Douglas Sóstenes Souza, additional
- Published
- 2023
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27. aPKC Cycles between Functionally Distinct PAR Protein Assemblies to Drive Cell Polarity
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Rodriguez, Josana, Peglion, Florent, Martin, Jack, Hubatsch, Lars, Reich, Jacob, Hirani, Nisha, Gubieda, Alicia G., Roffey, Jon, Fernandes, Artur Ribeiro, St Johnston, Daniel, Ahringer, Julie, and Goehring, Nathan W.
- Published
- 2017
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28. Critical review of elementary flows in LCA data
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Edelen, Ashley, Ingwersen, Wesley W., Rodríguez, Cristina, Alvarenga, Rodrigo A. F., de Almeida, Artur Ribeiro, and Wernet, Gregor
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- 2018
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29. Patronin/Shot Cortical Foci Assemble the Noncentrosomal Microtubule Array that Specifies the Drosophila Anterior-Posterior Axis
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Nashchekin, Dmitry, Fernandes, Artur Ribeiro, and St Johnston, Daniel
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- 2016
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30. The impact of obesity in hospitalized patients with COVID-19: a retrospective cohort study.
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Carra, Fábio Alfano, de Melo, Maria Edna, Stumpf, Matheo A. M., Cercato, Cintia, Fernandes, Ariana E., Mancini, Marcio C., EPICCoV Study Group, Hirota, Adriana, Kanasiro, Alberto Kendy, Crescenzi, Alessandra, Fernandes, Amanda Coelho, Miethke-Morais, Anna, Bellintani, Arthur Petrillo, Canasiro, Artur Ribeiro, Carneiro, Bárbara Vieira, Zanbon, Beatriz Keiko, Pinheiro, Bernardo, Batista, Senna Nogueira, Nicolao, Bianca Ruiz, and Besen, Bruno Adler Maccagnan Pinheiro
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COVID-19 ,HOSPITAL patients ,RENAL replacement therapy ,COHORT analysis ,ARTIFICIAL respiration ,HOSPITAL admission & discharge - Abstract
Background: Obesity is believed to be a risk factor for COVID-19 and unfavorable outcomes, although data on this remains to be better elucidated. Objective: To evaluate the impact of obesity on the endpoints of patients hospitalized due to SARS-CoV-2. Methods: This retrospective cohort study evaluated patients hospitalized at a tertiary hospital (Hospital das Clínicas da Faculdade de Medicina da USP) from March to December 2020. Only patients positive for COVID-19 (real-time PCR or serology) were included. Data were collected from medical records and included clinical and demographic information, weight and height, SAPS-3 score, comorbidities, and patient-centered outcomes (mortality, and need for mechanical ventilation, renal replacement therapy, or vasoactive drugs). Patients were divided into categories according to their BMI (underweight, eutrophic, overweight and obesity) for comparison porpoise. Results: A total of 2547 patients were included. The mean age was 60.3 years, 56.2% were men, 65.2% were white and the mean BMI was 28.1 kg/m
2 . SAPS-3 score was a risk factor for all patient-centered outcomes (HR 1.032 for mortality, OR 1.03 for dialysis, OR 1.07 for vasoactive drug use, and OR 1.08 for intubation, p < 0.05). Male sex increased the risk of death (HR 1.175, p = 0.027) and dialysis (OR 1.64, p < 0.001), and underweight was protective for vasoactive drug use (OR 0.45, p = 0.027) and intubation (OR 0.31, p < 0.003). Conclusion: Obesity itself was not an independent factor for worse patient-centered outcomes. Critical clinical state (indirectly evaluated by SAPS-3) appears to be the most important variable related to hard outcomes in patients infected with COVID-19. Highlights: Obesity is present in up to 30% of patients hospitalized with COVID-19 Obesity itself is not related to key endpoints such as mortality and need for dialysis, orotracheal intubation, or vasoactive drug SAPS-3 is the best predictor for worse outcomes in SARS-CoV-2 infection [ABSTRACT FROM AUTHOR]- Published
- 2024
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- View/download PDF
31. Expression of SmATPDases 1 and 2 in Schistosoma mansoni eggs favours IL‐10 production in infected individuals.
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Gomides, Thalisson Artur Ribeiro, de Souza, Márcio Luís Moreira, de Figueiredo, Amanda Braga, Lima, Marlucy Rodrigues, Silveira, Alda Maria Soares, de Assis, Girley Francisco Machado, Fraga, Lúcia Alves Oliveira, Silveira‐Nunes, Gabriela, Martucci, Letícia, Garcia, Jennifer Delgado, Afonso, Luís Carlos Crocco, Teixeira‐Carvalho, Andréa, and Leite, Pauline Martins
- Subjects
- *
SCHISTOSOMA mansoni , *INTERLEUKIN-10 , *IMMUNOREGULATION , *IMMUNE response , *EGGS , *T cells - Abstract
A role of IL‐10 is down‐regulating T‐cell responses to schistosome antigens. Since SmATPDases can be correlated to modulation of the immune response, we evaluated the expression of enzymes in S. mansoni eggs. Faecal samples were collected from 40 infected individuals to detect coding regions of the SmATPDases. The cytokines were measured in supernatants of PBMC. The analysis was performed by the global median determination and set up high producers (HP) of cytokines. Six individuals expressed SmATPDase1, six expressed SmATPDase2 and six expressed both enzymes. The group who expressed only SmATPDase1 showed a high frequency of IFN‐γ, TNF IL‐4 HP; individuals who expressed only SmATPDase2 showed a high frequency of IFN‐γ, IL‐6 and IL‐4 HP; and individuals who expressed both enzymes showed a high frequency of IL‐10 HP. The comparison of the IFN‐γ/IL‐10 ratio presented higher indices in the group who had SmATPDase 2 expression than those who had the expression of both enzymes. The positive correlation between infection intensity and IL‐10 levels remained only in the positive SmATPDase group. The IL‐10 is the only cytokine induced by the expression of both enzymes. Our data suggest that the expression of both enzymes seems to be a factor that modulates the host immune response by inducing high IL‐10 production. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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32. Expression of SmATPDases in Schistosoma mansoni eggs favors IL-10 mediated modulation in infected individuals
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Leite, Pauline Martins, primary, Gomides, Thalisson Artur Ribeiro, additional, Souza, Márcio Luís Moreira de, additional, Figueiredo, Amanda Braga de, additional, Lima, Marlucy Rodrigues, additional, Silveira, Alda Maria Soares, additional, Assis, Girley Francisco Machado de, additional, Fraga, Lúcia Alves Oliveira, additional, Silveira-Nunes, Gabriela, additional, Martucci, Letícia, additional, Garcia, Jennifer Delgado, additional, Afonso, Luís Carlos Crocco, additional, and Teixeira-Carvalho, Andrea, additional
- Published
- 2023
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33. Expression of SmATPDase 1 and SmATPDase 2 in Schistosoma mansoni eggs favors IL-10 mediated immune system modulation in infected individuals.
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Gomides, Thalisson Artur Ribeiro, primary, Souza, Márcio Luís Moreira, additional, Figueiredo, Amanda Braga, additional, Lima, Marlucy Rodrigues, additional, Silveira, Alda Maria Soares, additional, Assis, Girley Francisco Machado, additional, Fraga, Lucia Alves de Oliveira, additional, Silveira-Nunes, Gabriela, additional, Martucci, Leticia, additional, Garcia, Jennifer Delgado, additional, Afonso, Luís Carlos Crocco, additional, Teixeira-Carvalho, Andréa, additional, and Leite, Pauline Martins, additional
- Published
- 2023
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34. Analytical Model of Perturbed EMF in a Transmit-Receive Coil System Due to Thin Flaws
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Prashanth Baskaran, Dario Pasadas, Artur Ribeiro, and Helena Ramos
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Electrical and Electronic Engineering ,Electronic, Optical and Magnetic Materials - Published
- 2022
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35. A bibliometric analysis of research productivity on parasitic infections in children during the 15-year period / Uma análise bibliométrica da produtividade da investigação sobre infecções parasitárias em crianças durante o período de 15 anos
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Alexandre Wallace Dias Cozer, Daniel Madeira Cardoso, Tatiana Calavorty Lanna Pascoa, Marlucy Lima Rodrigues, Bárbara Nery Enes, Rafael Silva Gama, and Thalisson Artur Ribeiro Gomides
- Subjects
Marketing ,Pharmacology ,Organizational Behavior and Human Resource Management ,Strategy and Management ,Drug Discovery ,Pharmaceutical Science - Abstract
Parasitic infections in children (PIC) represent an important public health issue regarding that children are more vulnerable to these infections and its consequences. Many countries have neglected PIC in their health agendas and budgets, which has hindered scientific production about it. In this sense, bibliometric analyzes have been useful to identify the panorama of scientific production for many diseases and thus assist in decision-making. Thus, this review aims to analyze the brazilian and worldwide scientific production of PIC between 2006 and 2020. The terms “Parasitic diseases” and “Children” were used for search in Scopus database. The variables were organized and simple linear regression was applied using Graphpad Prism 7. Values of p
- Published
- 2022
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36. Proporção áurea: uma abordagem estética na odontologia revisão de literatura
- Author
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Romero Samarcos Mendes Pontanegra, Emilly Emanuelly Oliveira Da Silva, Gabriel Silva Barboza Dos Santos, Ricardo Hernan Artur Ribeiro, and Cecilia Corcino de Lucena Camboim
- Abstract
Introdução: A proporção áurea pode ser definida como uma matemática específica vista como atraente aos olhos humanos. Na Odontologia o seu emprego favoreceu a projeção dos dentes anteriores superiores mais harmônicos, instituindo resultados padronizados para construir um sorriso estético. Objetivo: O objetivo deste estudo foi investigar, por meio de uma revisão de literatura, a prevalência da proporção áurea e a sua abordagem estética na Odontologia. Materiais e Métodos: Foi realizado um levantamento bibliográfico no Pubmed, utilizando os descritores proporção áurea e odontologia estética em inglês, onde foram selecionados artigos de acordo com os critérios de inclusão. Resultados: Vários estudos foram realizados com intuito de analisar a prevalência da proporção áurea em diferentes populações, os relatos não foram encontrados de maneira recorrente, ainda assim os indivíduos congruentes ao padrão áureo foram considerados mais atraentes. Alguns Cirurgiões-dentistas aplicaram a razão áurea clinicamente para determinar proporções dentais nos elementos anteriores superiores dos seus pacientes, o resultado obtido foi satisfatório e auxiliou na reabilitação oral. Conclusão: Conclui-se que a proporção áurea pode ser empregada como um guia de orientação para reabilitações estéticas, seguindo os seus parâmetros é possível sistematizar proporções para o planejamento de um sorriso mais agradável.
- Published
- 2022
- Full Text
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37. Expression of SmATPDases in Schistosoma mansoni eggs favors IL-10 mediated modulation in infected individuals
- Author
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Pauline Martins Leite, Thalisson Artur Ribeiro Gomides, Márcio Luís Moreira de Souza, Amanda Braga de Figueiredo, Marlucy Rodrigues Lima, Alda Maria Soares Silveira, Girley Francisco Machado de Assis, Lúcia Alves Oliveira Fraga, Gabriela Silveira-Nunes, Letícia Martucci, Jennifer Delgado Garcia, Luís Carlos Crocco Afonso, and Andrea Teixeira-Carvalho
- Abstract
Background and objectives: A role of IL-10 is down-regulating T cell responses to schistosome antigens. Since SmATPDases can be correlated to modulation of the immune response, we evaluated the expression of enzymes in S.mansoni eggs. Patients/Methods: Fecal samples were collected from 40 infected individuals to detect coding regions of the SmATPDases. The cytokines was measured in supernatants of PBMC. The analysis was performed by the global median determination and set up high producers (HP) of cytokines. Results: Six individuals expressed SmATPDase1, six expressed SmATPDase2, and six expressed both enzymes. The group who expressed only SmATPDase1 showed a high frequency of IFN-γ, TNF, IL-4 HP, individuals who expressed only SmATPDase2 showed a high frequency of IFN-γ, IL-6, and IL-4 HP and individuals who expressed both enzymes showed a high frequency of IL-10 HP. In the group that showed expression both enzymes was observed lower indices the ratio between IFN-γ/IL-10. The positive correlation between infection intensity and IL-10 levels remained only in the positive SmATPDase group. The IL-10 is the only cytokine induced by the expression of both enzymes. Conclusions: The expression of both enzymes seems to be a factor that modulates the host immune response by inducing high IL-10 production.
- Published
- 2023
- Full Text
- View/download PDF
38. Expression of SmATPDase 1 and SmATPDase 2 in Schistosoma mansoni eggs favors IL-10 mediated immune system modulation in infected individuals
- Author
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Thalisson Artur Ribeiro Gomides, Márcio Luís Moreira Souza, Amanda Braga Figueiredo, Marlucy Rodrigues Lima, Alda Maria Soares Silveira, Girley Francisco Machado Assis, Lucia Alves de Oliveira Fraga, Gabriela Silveira-Nunes, Leticia Martucci, Jennifer Delgado Garcia, Luís Carlos Crocco Afonso, Andréa Teixeira-Carvalho, and Pauline Martins Leite
- Abstract
Background Schistosomiasis is a chronic disease that affects over 200 million people worldwide. A pivotal role of IL-10 is down-regulating Th1 and Th2 responses to schistosome antigens, which can favor the parasite establishment. The SmATPDases degrade ATP and ADP in AMP and adenosine, a molecule with anti-inflammatory properties. We evaluated the expression of SmATPDases 1 and 2 enzymes in S. mansoni eggs obtained from infected individuals as a possible parasite-related factor that could influence the host immune response and the clinical outcome of the disease. Methods Fecal samples were collected from 40 infected individuals to detect coding regions of the enzymes by the qPCR. The production of cytokines was measured in supernatants of PBMC cultures. The analysis was performed by the global median determination for each cytokine and set up high producers (HP) of cytokines. Results Six individuals expressed SmATPDase 1 in their fecal samples, 6 expressed SmATPDase 2, and 6 expressed both enzymes. The group who expressed only SmATPDase 1 showed a high frequency of IFN-γ, TNF, IL-4 HP, and a low frequency of IL-6 HP. The group who expressed only SmATPDase 2 showed a high frequency of IFN-γ, IL-6, and IL-4 HP and a low frequency of IL-10 HP. The group who expressed both enzymes showed a high frequency of IL-10 HP and low frequencies of IFN-γ, IL-6, IL-2, IL-4, and IL-13 HP. In the group that had SmATPDase 2 expression was observed higher indices the ratio between IFN-γ/IL-10 than individuals that showed expression both enzymes. The positive correlation between infection intensity and IL-10 levels remained only in the positive SmATPDase group. Overall, the analysis revealed that 62.5% of the cytokines presented reduced frequency in the group of individuals expressing both enzymes, the IL-10 is the only cytokine induced by the expression of both enzymes and the expression profile of SmATPDases is relevant data for grouping individuals. Conclusions The expression of both enzymes in the parasite's eggs seems to be a new undescribed factor that negatively modulates the host immune response by inducing high IL-10 production, which, in turn, can contribute to the survival of the parasite.
- Published
- 2023
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39. Towards Semantic Trajectory Outlier Detection.
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Artur Ribeiro de Aquino, Luis Otávio Alvares, Chiara Renso, and Vania Bogorny
- Published
- 2013
40. Transplante de terceiro molar autógeno, uma alternativa ao implante dentário - Revisão de literatura
- Author
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Romero Samarcos Mendes Pontanegra, Ricardo Herman Artur Ribeiro, Gabriel Silva Barboza Dos Santos, Emilly Emanuelly Oliveira Da Silva, and Cecilia Corcino de Lucena Camboim
- Subjects
General Medicine - Abstract
Introdução: A manutenção da dentição natural com saúde e função durante a vida do paciente é vista como prioridade, todavia, existem perdas dentárias por doenças como a cárie e periodontite além de traumatismos que podem levar a extração do dente afetado. Uma possibilidade de tratamento é o transplante dentário, também conhecido como “prótese biológica” e está diretamente associado à situações socioeconómicas. Objetivos: O objetivo deste estudo foi investigar, por meio de uma revisão de literatura, a viabilidade da técnica de transplante dentário autógeno como alternativa ao implante dentário. A técnica discutida apresenta índice de sucesso elevado, mostrando-se uma excelente alternativa de tratamento. Materiais e Métodos: Foi realizado um levantamento bibliográfico no Pubmed, utilizando os descritores autotransplante, terceiro molar e reabilitação, onde foram selecionados artigos de acordo com os critérios de inclusão. Resultados: Vários estudos foram realizados com intuito de analisar a técnica e sucesso do transplante de terceiro molar como forma de tratamento em casos de perda precoce de molares. Alguns Cirurgiões-dentistas aplicaram a técnica quando a alternativa está relacionada ao baixo custo do tratamento. Conclusões: Conclui-se que a técnica tem um alto índice de sucesso, tornando uma alternativa viável e econômica para reabilitação protética oral natural.
- Published
- 2022
- Full Text
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41. NADES-Based Cork Extractives as Green Ingredients for Cosmetics and Textiles
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Diana Rocha, David S. Freitas, Jéssica Magalhães, Mariana Fernandes, Sónia Silva, Jennifer Noro, Artur Ribeiro, Artur Cavaco-Paulo, Madalena Martins, Carla Silva, and Universidade do Minho
- Subjects
bioactive compounds ,Science & Technology ,cork extractives ,Process Chemistry and Technology ,dyeing/coloration of cotton fabrics ,antioxidant activity ,Bioengineering ,cosmetic formulations ,Quercus suber L ,dyeing ,cytotoxicity ,Chemical Engineering (miscellaneous) ,coloration of cotton fabrics - Abstract
The demand for products based on natural ingredients is increasing among cosmetic and textile consumers. Cork extracts contain components of interest with special properties, including antioxidant, anti-inflammatory, and antibacterial activities, that might improve the effectiveness of cosmetic formulations currently on the market and may impart new characteristics to textiles. The main goal of this work was to investigate the effect of the incorporation of three cork extracts into two commercial cosmetic formulations (formulation A and B) and evaluate their role as textile dyeing agents. The extracts (E1, E2, and E3) were obtained from cork powder using natural deep eutectic solvents (NADES) (E1-NADES 1: lactic acid:glycerol, E2-NADES 2: lactic acid:glycine, and E3-NADES 3: lactic acid:sodium citrate) and applied in combination with the solvent. The impact of the extracts on the cosmetic formulations’ properties was evaluated in terms of pH, viscosity, antioxidant activity, transdermal permeation capacity, cytotoxicity, and organoleptic characteristics (odor, color, and appearance). The results demonstrated that the cork extracts improved the antioxidant performance of the formulations (90% reduction in DPPH (1,1-difenil-2-picril-hidrazil)). Moreover, low concentrations (5 mg/mL and 10 mg/mL) of extract did not present a cytotoxic effect on keratinocytes. Cotton fabrics were efficiently dyed with the NADES-based cork extracts which conferred to these substrates antioxidant (78% in DPPH reduction) and antibacterial abilities (inhibition halos: 12–15 mm). The application of cork extracts as ingredients in cosmetics or as dyeing/coloration agents for textile coloration is revealed to be a promising and green route to replace harmful ingredients normally used in industry., This study was supported by the Portuguese Foundation for Science and Technology (FCT) under the scope of the strategic funding of UIDB/04469/2020 unit. D.S.F. also thanks the Portuguese Foundation for Science and Technology (FCT) for funding (SFRH/BD/147190/2019). A.R. thanks to Portuguese Foundation for Science and Technology (FCT) for is contract under the CEEC-Individual—4th Edition with the reference 2021.02803.CEECIND., info:eu-repo/semantics/publishedVersion
- Published
- 2023
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- View/download PDF
42. High frequency of M. leprae DNA detection in asymptomatic household contacts
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Gama, Rafael Silva, Gomides, Thalisson Artur Ribeiro, Gama, Chaiana Fróes Magalhães, Moreira, Suelen Justo Maria, de Neves Manta, Fernanda Saloum, de Oliveira, Lorena Bruna P., Marçal, Pedro Henrique Ferreira, Sarno, Euzenir Nunes, Moraes, Milton Ozório, Garcia, Raúl Marcel González, and de Oliveira Fraga, Lucia Alves
- Published
- 2018
- Full Text
- View/download PDF
43. Análise da produção científica mundial sobre insuficiência cardíaca e tendências de progressão do conhecimento: um estudo bibliométrico / Analysis of the world scientific production about heart failure and knowledge progression trends: a bibliometric study
- Author
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Daniel Madeira Cardoso, Maria Júlia Martins Machado, Abner da Silva Machado, Miriã Vieira dos Santos Ferreira, Atílio Franco De Mattos, Jaqueline Gomes Xavier, Reinaldo Machado Júnior, and Thalisson Artur Ribeiro Gomides
- Subjects
Marketing ,Pharmacology ,Organizational Behavior and Human Resource Management ,Strategy and Management ,Drug Discovery ,Pharmaceutical Science - Published
- 2021
- Full Text
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44. CONSTAnT - A Conceptual Data Model for Semantic Trajectories of Moving Objects.
- Author
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Vania Bogorny, Chiara Renso, Artur Ribeiro de Aquino, Fernando de Lucca Siqueira, and Luis Otávio Alvares
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- 2014
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45. Revisiting the Chinese Room: Looking for Agency in a World Packed with Archaeological Things
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Artur Ribeiro
- Subjects
Cultural Studies ,Archeology ,060101 anthropology ,060102 archaeology ,media_common.quotation_subject ,Social reality ,Compromise ,Agency (philosophy) ,Chinese room ,06 humanities and the arts ,Archaeology ,Posthumanism ,0601 history and archaeology ,Sociology ,Consciousness ,Computational theory of mind ,media_common ,Social theory - Abstract
Posthumanist approaches in archaeology have given plenty of focus to things in the last decade. This focus on things is a reaction to the over-anthropocentric view of social life advanced by postprocessual archaeologists. Whereas agency of more than 10 years ago was about how individuals expressed purpose and identity, agency today is about how both humans and non-human objects affect one another in a symmetrical manner. It seems without doubt that Posthumanism has contributed greatly to new understandings of social reality, but in the process it has also forced archaeologists to sacrifice many topics of interest, namely those involving consciousness and purpose. But is this sacrifice really necessary? This is one of the central problems of Posthumanism: it disallows a compromise of ideas from more conventional social theory (e.g. norms, purpose, practice) with those of posthumanist theory. This paper revisits John Searle's ‘Chinese Room’ and reiterates what this thought-experiment meant to understanding consciousness and purpose. The thought-experiment highlighted the differences between humans and machines and demonstrated that, even if a machine could replicate human purpose, it would still not be considered human because, unlike mechanical processes, human purpose is based on ethics. The thought-experiment was the first step in debunking the computational theory of mind. In light of this thought-experiment, the paper argues that, in a world where things interact with humans, we should think of agency in terms of ethics and keep the focus on humans.
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- 2021
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46. Exploring Z-Tyr-Phe-OH-based hydrogels loaded with curcumin for the development of dressings for wound healing
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Jorge Santos, Eugénia Pinto, Artur Ribeiro, Cátia Alves, Graça Soares, and Universidade do Minho
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Curcumin ,Wound dressings ,Science & Technology ,Pharmaceutical Science ,Antimicrobial ,Dipeptide hydrogel - Abstract
The poor mechanical performance and difficulty of using wound dressings without discomfort to the patient motivated the development of textile composites, incorporating peptide hydrogels in textile matrices. Thus, 70% viscose and 30% polyester non-woven and 100% cotton bandages were functionalized by impregnation with a hydrogel resulting from physical crosslinking of Z-Tyr-Phe-OH dipeptide. The healing properties of these structures resulted from the incorporation of curcumin into the polymer. The textile composites were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), and colour strength (K/S) with differences being observed after functionalization with the hydrogel (higher surface smoothness and thermal stability). The breathability and moisture management properties of the new composites were similar to those of commercial dressings, and the pH value of the aqueous extract resembled skin. The swelling of the composites increased significantly due to the contribution of the hydrogel. Furthermore, the textile composites released the curcumin for a long time with an initial burst release in the first 2 h and showed good antibacterial and antifungal properties, without displaying significant cytotoxicity on fibroblasts. Overall, the composites here were developed to meet the main requirements of dressings for the management and treatment of skin wounds., This study was supported by FCT – Foundation for Science and Technology within the scope of the project PTDC/QUI-QOR/29015/2017 and by FCT/OE, PIDDAC funds within the scope of the projects UID/CTM/00264/2021, UIDB/04469/2020 and UIDB/04423/2020., info:eu-repo/semantics/publishedVersion
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- 2022
47. Handlebar hernia–unusual complication from blunt trauma
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Bruno Vieira, Ana Melo, Carina Gomes, Leandro Lajut, Artur Ribeiro, Urânia Fernandes, Gonçalo Guidi, Clara Leal, and João Pinto-de-Sousa
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Surgery - Abstract
Handlebar hernia is a rare entity, mainly resulting from blunt abdominal trauma with a sudden deceleration mechanism. Diagnosis of handlebar at admission may be difficult because the rupture of abdominal wall layers often is not clinically recognized in the emergency department, which requires a high degree of suspicion to identify theses lesions. It is very important to rule out the presence of intra-abdominal injuries, and in adults, surgical repair is needed. Herein, the case of an adult man who presented to the emergency department with blunt abdominal trauma caused by a motorcycle handlebar is described.
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- 2022
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48. DESCARTE DA ÁGUA RESIDUAL EM APARELHOS DE AR CONDICIONADO – POSSÍVEIS DANOS, SOLUÇÕES SUSTENTÁVEIS / DISPOSAL OF RESIDUAL WATER IN AIR CONDITIONING DEVICES - POSSIBLE DAMAGE, SUSTAINABLE SOLUTIONS
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Artur Ribeiro dos Santos Souza, Magda Macedo Nantes, Mariana Alves Caldo, Dione Cordeiro Calado, and Gisele Figueiredo Ortiz
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Marketing ,Pharmacology ,Organizational Behavior and Human Resource Management ,Strategy and Management ,Drug Discovery ,Pharmaceutical Science - Abstract
RESUMO Este trabalho apresenta uma pesquisa realizada numa escola municipal de Campo Grande – MS, onde constatou-se que a agua condensada e descartada pelos aparelhos de ar condicionado esta infiltrando na alvenaria do predio escolar, provocando deterioracao do mesmo. Foi observado ainda que a agua acumulada nas calcadas, possivelmente favorece a proliferacao de animais vetores de doencas, como por exemplo os pombos urbanos ( Columba livia ), pois os mesmos ingerem da agua acumulada nas calcadas. Nesta pesquisa foi quantificado o volume medio de agua expelida em um aparelho de ar condicionado. Para obter esses dados, foi conectado uma mangueira plastica ao dreno do aparelho condensador, desta forma, foi coletado a agua residual condensada, em uma garrafa plastica (PET) durante 30 min e em seguida, determinou-se o volume medio de agua por hora. Com o objetivo de solucionar o problema, foi desenvolvido um sistema para captacao dessa agua residual, dando-lhe um destino ecologicamente mais apropriado. Entao, com o uso de um palete, mangueiras plasticas, gotejadores e alguns pedacos de tubos de PVC (100mm), foi elaborado uma horta vertical (apenas para finalidades didaticas, pois para o consumo humano, demandaria mais estudos, materiais e tempo). A agua condensada foi direcionada por mangueiras para um reservatorio (cano de PVC de 100mm, com cerca de 1,5m de comprimento) e deste para outras mangueiras que circundam os canteiros construidos. Desta forma a agua e lancada diretamente nos canteiros, deixando de infiltrar na parede.
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- 2021
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49. Vagueness, Identity, and the Dangers of a General Metaphysics in Archaeology
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Artur Ribeiro
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060101 anthropology ,060102 archaeology ,conjecture ,media_common.quotation_subject ,vagueness ,B1-5802 ,Metaphysics ,archaeology ,Vagueness ,06 humanities and the arts ,metaphysics ,objects ,Epistemology ,Philosophy ,Identity (philosophy) ,0601 history and archaeology ,Philosophy (General) ,Psychology ,media_common - Abstract
Archaeology is currently bound to a series of metaphysical principles, one of which claims that reality is composed of a series of discrete objects. These discrete objects are fundamental metaphysical entities in archaeological science and posthumanist/New Materialist approaches and can be posited, assembled, counted, and consequently included in quantitative models (e.g. Big Data, Bayesian models) or network models (e.g. Actor-Network Theory). The work by Sørensen and Marila shows that archaeological reality is not that discrete, that some objects cannot be easily identified, and that perhaps reality is not always necessarily composed of discrete objects. The aim of this article is to take Sørensen and Marila’s arguments to their ultimate logical consequences: most archaeological theory today operates under the illusion of a general metaphysics. This illusion dictates not only that all of reality is composed of discrete objects, but that since reality manifests in a certain way, there has to be a methodology that accurately represents that reality. A brief discussion on the notion of “conjecture,” as conceived in certain historical theories, is also presented.
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- 2021
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50. Ohmic heating as an innovative approach for the production of keratin films
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Raul Machado, Ana Tinoco, Artur Ribeiro, Ricardo Nuno Correia Pereira, Artur Cavaco-Paulo, Rui Miguel Martins Rodrigues, and Universidade do Minho
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Work (thermodynamics) ,Hot Temperature ,Materials science ,02 engineering and technology ,Biochemistry ,03 medical and health sciences ,Structural Biology ,Electric field ,Hair model ,Thermal ,Keratin ,medicine ,Molecular Biology ,Films ,030304 developmental biology ,chemistry.chemical_classification ,Conventional heating ,0303 health sciences ,Science & Technology ,integumentary system ,Electric Conductivity ,Membranes, Artificial ,General Medicine ,021001 nanoscience & nanotechnology ,Processing methods ,chemistry ,Chemical engineering ,Ohmic heating ,Keratins ,Swelling ,medicine.symptom ,0210 nano-technology ,Joule heating - Abstract
Ohmic heating is a thermal processing method based on the application of electric fields directly into a semi-conductive medium. In this study, we explored for the first time the use of ohmic heating to obtain keratin films. The properties of the films prepared by ohmic heating and conventional heating were evaluated and compared under similar thermal profiles. A lower increase in free thiols' concentration was obtained for the keratin solutions and keratin films submitted to ohmic heating (16% increase for the keratin solution extracted from virgin hair, pHâ¯9, submitted to ohmic heating and 23% when submitted to conventional heating). Significant differences in the swelling results were observed for the films prepared with keratin extracted from virgin hair, with a swelling decrease in about 55% for the films prepared by ohmic heating. Generally, the keratin films obtained by ohmic heating showed distinct properties comparatively to the films produced by conventional methods. The application of a fusion protein on the keratin films demonstrated their capacity to be used as substitutes to hair fibers when evaluating the potential of new cosmetic products. This work suggests that ohmic heating show potential to tailor keratin films properties depending on an intended application or functionality., This study was supported by the Portuguese Foundation for Science and Technology (FCT) under the scope of the strategic funding of UIDB/04469/2020 unit and BioTecNorte operation (NORTE-01-0145-FEDER000004) funded by the European Regional Development Fund under the scope of Norte2020 - Programa Operacional Regional do Norte. Ana Tinoco and Rui M. Rodrigues thanks FCT for funding the scholarships with the references SFRH/BD/114035/2015 and SFRH/BD/110723/2015, respectively., info:eu-repo/semantics/publishedVersion
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- 2020
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