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Abstract The genus Candida represents the main cause of infections of fungal origin. Some species stand out as disease promoters in humans, such as C. albicans, C. glabrata, C. parapsilosis, and C. tropicalis. This study evaluated the antifungal effects of propyl (E)-3-(furan-2-yl) acrylate. The minimum inhibitory concentration of the synthetic compound, amphotericin B and fluconazole alone against four species of Candida ranged from 64 to 512 μg/mL, 1 to 2 μg/mL, and 32 to 256 μg/mL, respectively. The synergistic effect of the test substance was observed when associated with fluconazole against C. glabrata, there was no antagonism between the substances against any of the tested strains. The potential drug promoted morphological changes in C. albicans, decreasing the amount of resistance, virulence, and reproduction structures, such as the formation of pseudohyphae, blastoconidia, and chlamydospores, ensuring the antifungal potential of this substance. It was also possible to identify the fungicidal profile of the test substance through the study of the growth kinetics of C. albicans. Finally, it was observed that the test compound inhibited the ergosterol biosynthesis by yeast.

https://doi.org/10.1590/s2175-97902023e22045

COVID-19 outcomes in people living with HIV: Peering through the waves
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Sales, Thaís Lorenna Souza

; Souza-Silva, Maíra Viana Rego

; Delfino-Pereira, Polianna

; Neves, João Victor Baroni

; Sacioto, Manuela Furtado

; Assis, Vivian Costa Morais de

; Duani, Helena

; Oliveira, Neimy Ramos de

; Sampaio, Natália da Cunha Severino

; Ramos, Lucas Emanuel Ferreira

; Schwarzbold, Alexandre Vargas

; Jorge, Alzira de Oliveira

; Scotton, Ana Luiza Bahia Alves

; Castro, Bruno Mateus de

; Silva, Carla Thais Cândida Alves da

; Ramos, Carolina Marques

; Anschau, Fernando

; Botoni, Fernando Antonio

; Grizende, Genna Maira Santos

; Nascimento, Guilherme Fagundes

; Ruschel, Karen Brasil

; Menezes, Luanna Silva Monteiro

; Castro, Luís César de

; Nasi, Luiz Antônio

; Carneiro, Marcelo

; Godoy, Mariana Frizzo de

; Nogueira, Matheus Carvalho Alves

; Guimarães Júnior, Milton Henriques

; Ziegelmann, Patricia Klarmann

; Almeida, Rafaela Charão de

; Francisco, Saionara Cristina

; Silveira Neto, Sidney Teodoro

; Araújo, Silvia Ferreira

; Avelino-Silva, Thiago Junqueira

; Aliberti, Márlon Juliano Romero

; Pires, Magda Carvalho

; Silva, Eduardo Sérgio da

; Marcolino, Milena Soriano

Clinics

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2023, Volume 78 elocation 100223

Abstract: En | Text: En | PDF: En

Abstract Objective To evaluate clinical characteristics and outcomes of COVID-19 patients infected with HIV, and to compare with a paired sample without HIV infection. Methods This is a substudy of a Brazilian multicentric cohort that comprised two periods (2020 and 2021). Data was obtained through the retrospective review of medical records. Primary outcomes were admission to the intensive care unit, invasive mechanical ventilation, and death. Patients with HIV and controls were matched for age, sex, number of comorbidities, and hospital of origin using the technique of propensity score matching (up to 4:1). They were compared using the Chi-Square or Fisher's Exact tests for categorical variables and the Wilcoxon for numerical variables. Results Throughout the study, 17,101 COVID-19 patients were hospitalized, and 130 (0.76%) of those were infected with HIV. The median age was 54 (IQR: 43.0;64.0) years in 2020 and 53 (IQR: 46.0;63.5) years in 2021, with a predominance of females in both periods. People Living with HIV (PLHIV) and their controls showed similar prevalence for admission to the ICU and invasive mechanical ventilation requirement in the two periods, with no significant differences. In 2020, in-hospital mortality was higher in the PLHIV compared to the controls (27.9% vs. 17.7%; p = 0.049), but there was no difference in mortality between groups in 2021 (25.0% vs. 25.1%; p > 0.999). Conclusions Our results reiterate that PLHIV were at higher risk of COVID-19 mortality in the early stages of the pandemic, however, this finding did not sustain in 2021, when the mortality rate is similar to the control group.

https://doi.org/10.1016/j.clinsp.2023.100223

Diretivas antecipadas de vontade na perspectiva da população idosa de um município do meio oeste catarinense
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Vanzella, Gustavo Scherer

; Souza, Isadora Carolina Duarte de

; Ferreira, Juliano Cesar

; Beltrame, Vilma

; Cetolin, Sirlei Favero

; Bonamigo, Elcio Luiz

Revista Brasileira de Geriatria e Gerontologia

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2023, Volume 26 elocation e230094

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Objective To analyze the knowledge of older individuals in a municipality in the Midwestern region of Santa Catarina regarding the development of Advance Directives, their preferences regarding the available models, and the selection of a representative to make decisions on their behalf. Method Cross-sectional study carried out by providing participants with two models of Advance Directives were made available to the participants for completion and applied a questionnaire on knowledge, acceptance, and evaluation of the device. Results There were 85.63% of the participants who were unaware of the Advance Directives, 98.13% who were unaware of document models, 100% who considered model 1, more complete, to be good or acceptable, and 66.88% who indicated an adult child as its representative. When asked about the importance of preparing, making available to the population, and passing a law that regulates this right, the participants were assertive respectively by 91.88%, 91.25% and 91.25%. Conclusion Most older people were unaware of the AD models, but mentioned model 1, considering it good or acceptable. Most had no difficulties in understanding and recognized the importance of preparing and making AD available to the population, as well as the need for a law to regulate this right. There was a high proportion of participants indicating an adult child as a legal representative, emphasizing the importance of involving the family in this process. These results highlight the need to make older people aware of AD and provide clear and comprehensive models.

Resumo Objetivo Analisar o conhecimento da pessoa idosa em um município do meio oeste catarinense acerca da elaboração das Diretivas Antecipadas de Vontade (DAV), a sua preferência em relação aos modelos de preenchimento e a escolha do representante que irá substitui-la na tomada de decisão. Método Estudo transversal realizado por meio da disponibilização aos participantes de dois modelos de DAV para preenchimento e aplicação de um questionário sobre conhecimento, aceitação e avaliação do dispositivo. Resultados A maioria dos participantes (85,63%) desconhecia as DAV; 98,13% desconheciam os modelos do documento; 100% consideraram bom ou aceitável o modelo 1, mais completo; 66,88% indicaram um filho como representante legal. Questionados sobre a importância da elaboração, disponibilização à população e aprovação de lei que regulamente esse direito, as respostas foram afirmativas, respectivamente, para 91,88%, 91,25% e 91,25% dos participantes. Apenas 5% dos respondentes apontaram dificuldades no entendimento dos modelos, sendo a “linguagem” o item de maior dificuldade. Conclusão A maioria das pessoas idosas desconhecia os modelos de DAV, mas referiram o modelo 1, considerando-o bom ou aceitável. A maioria não teve dificuldades no entendimento e reconheceu a importância da elaboração e disponibilização das DAV à população, assim como a necessidade de uma lei para regulamentar esse direito. Observou-se uma alta proporção de participantes indicando um filho como representante legal, enfatizando a importância de envolver a família nesse processo. Esses resultados ressaltam a necessidade de conscientizar as pessoas idosas sobre as DAV e disponibilizar modelos claros e abrangentes.

https://doi.org/10.1590/1981-22562023026.230094.pt

Estudo exploratório acerca da prevalência do alto risco para eventos coronários na população brasileira: evidências da Pesquisa Nacional de Saúde 2013
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Silva, Pedro Gilson da

; Simões, Taynãna César

; Santos, Juliano dos

; Conceição, Luciana Lima da

; Oliveira, Jonas Sâmi de Albuquerque de

; Ferreira, Aline Alves

; Pierin, Angela Maria Geraldo

; Meira, Karina Cardoso

Cadernos Saúde Coletiva

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2023, Volume 31 N. 4 elocation e31040506

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Background: Diseases of the circulatory system are the leading cause of illness and death in the world population. Objective: Estimate the prevalence of high risk for coronary events (HRC) and associated factors in the Brazilian adult population. Method: This is a cross-sectional study, based on data from the National Health Survey 2013. The association of this condition with sociodemographic, health condition, and habits and lifestyle was evaluated for individuals as in HRC, according to the first stratification phase of the I Brazilian Directive of Cardiovascular Prevention. Statistical analysis was performed in three stages: descriptive; bivariate; and multiple analysis. Sampling weights and design effect of the complex sampling plan were considered, using the survey library of the statistical program R, version 3.2.2. Results: The prevalence of HRC in the Brazilian population was 11.06% (95%CI 10.83–11.29). A higher prevalence of HRC was observed with advancing age, in individuals living in the Central-South, who self-rated their health as poor/very poor, former smokers, and individuals with systemic arterial hypertension. Conclusions: The Brazilian population presented a high prevalence of HRC and, thus, has a more than 20% risk of an acute coronary event in the next ten years, if prevention and control measures are not taken.

Resumo Introdução: As doenças do aparelho circulatório representam a principal causa de adoecimento e mortes na população mundial. Objetivo: Estimar a prevalência de alto risco para evento coronário (ARC) e os fatores associados na população adulta brasileira. Método: Estudo transversal, com base nos dados da Pesquisa Nacional de Saúde 2013. Para os indivíduos classificados em ARC, segundo a primeira fase de estratificação da I Diretriz Brasileira de Prevenção Cardiovascular, avaliou-se a associação dessa condição com variáveis sociodemográficas, condição de saúde e hábitos e estilo de vida. A análise estatística foi realizada em três etapas: descritiva, bivariada e múltipla. Consideraram-se os pesos amostrais e o efeito de desenho do plano de amostragem complexo, utilizando-se da biblioteca survey do programa estatístico R, versão 3.2.2. Resultados: A prevalência de ARC na população brasileira foi de 11,06% (IC95% 10,83–11,29). Observou-se maior proporção de ARC com o avançar da idade, em indivíduos residentes no centro-sul, que autoavaliaram a saúde como ruim/muito ruim, ex-fumantes e hipertensos. Conclusões: A população brasileira apresentou alta prevalência de ARC e, assim, possui mais de 20% de risco de um evento coronário agudo nos próximos dez anos, caso medidas de prevenção e controle não sejam tomadas.

https://doi.org/10.1590/1414-462x202331040506

The Sistine Chapel and clothesline signs: a tale of two arteries signs
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Coutinho, Léo

; Marcon, João Matheus Tussolini

; Oliveira, Ellen Riedi

; Murakami, Camila Emi Fujiwara

; Silva, Jessica Castro

; Muzzio, Juliano André

; Zetola, Viviane Hiroki Flumignan

; Lange, Marcos Christiano

; Engelhorn, Carlos Alberto

; Souza, Paulo Cesar Evaristo

; Teive, Hélio Afonso Ghizoni

Arquivos de Neuro-Psiquiatria

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nov 2022, Volume 80 N. 11 Pages 1182 - 1183

Abstract: En | Text: En | PDF: En

https://doi.org/10.1055/s-0042-1758395

Estudo do esgoto de um município do sul de Minas Gerais: correlação de variáveis físicas e químicas, casos de COVID-19 e concentração do RNA de SARS-CoV-2
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Abreu, Mariana Aparecida de Freitas

; Siqueira, Juliano Curi de

; Souza, Aline dos Reis

; Ázara, Marina Santos

; Lopes, Bruna Coelho

; Mota Filho, César Rossas

; Batista, Ana Maria Moreira

; Assemany, Paula Peixoto

; Franco, Camila Silva

; Matos, Mateus Pimentel de

; Silva Filho, Marcelo Vieira da

; Siniscalchi, Luciene Alves Batista

Engenharia Sanitaria e Ambiental

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oct 2022, Volume 27 N. 5 Pages 967 - 974

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A epidemiologia baseada em esgotos é uma importante ferramenta de saúde pública com grande aplicabilidade no enfrentamento à pandemia de COVID-19, visto que indivíduos infectados são capazes de excretar partículas de SARS-CoV-2. Diante desse contexto, este estudo objetivou correlacionar o número de casos de COVID-19 com variáveis físicas e químicas e presença do vírus em amostras de esgoto bruto provenientes de uma estação de tratamento de esgoto (ETE) do município de Lavras (MG) coletadas entre as 19ª e 25ª semanas epidemiológicas. As amostras foram concentradas pelo método de adsorção em membrana eletronegativa, e o RNA de SARS-CoV-2 foi extraído, detectado e quantificado por reação da transcriptase reversa seguida pela reação em cadeia da polimerase (RT-qPCR) utilizando-se oligonucleotídeos e sondas para o gene N. Ademais, as variáveis pH, sólidos suspensos totais e demanda química de oxigênio foram avaliadas. Os casos de COVID-19 foram obtidos de boletins epidemiológicos disponibilizados pela prefeitura. Na 24ª semana epidemiológica, observou-se redução na concentração viral (cópias L-1) concomitantemente às medidas de enfrentamento à pandemia iniciadas pelo município. Correlação positiva forte e significativa (p < 0,05) entre carga viral e número de casos confirmados foi obtida por meio do teste de Spearman, entretanto não houve correlação entre a presença do vírus e as características físicas e químicas do esgoto. Sugere-se, portanto, que novas pesquisas sejam realizadas com a finalidade de rastrear a concentração de SARS-CoV-2 em águas residuárias, corroborando, desse modo, com o enfrentamento à pandemia e a obtenção de sistemas de vigilância epidemiológica por meio do monitoramento de esgotos.

ABSTRACT Wastewater-based epidemiology is an important public health tool with great applicability when facing the COVID-19 pandemic, since infected individuals are able to excrete SARS-CoV-2 particles. In this context, this study aimed to correlate the number of cases of COVID-19 with physical and chemical variables and the presence of the virus in raw sewage samples from a sewage treatment plant (STP) in the municipality of Lavras, Minas Gerais, Brazil, collected between the 19th and 25th epidemiological weeks. The samples were concentrated by electronegative membrane adsorption method and SARS-CoV-2 RNA was extracted, detected, and quantified by RT-qPCR using oligonucleotides and probes for the N gene. Moreover, the variables pH, total suspended solids, and chemical oxygen demand were evaluated. COVID-19 cases were obtained from epidemiological bulletins made available by the municipal government. From the 24th epidemiological week on, a reduction in viral concentration (copies L-1) was observed concomitantly with the pandemic response countermeasures initiated by the municipality. A strong and significant positive correlation (p<0.05) between viral load and number of confirmed cases was obtained through Spearman’s test. However, there was no correlation between the presence of the virus and the physical and chemical characteristics of the sewage. Therefore, it is suggested that further research be carried out in order to track SARS-CoV-2 concentrations in wastewater, thus corroborating with the fight against the pandemic and the achievement of epidemiological surveillance systems based on sewage monitoring.

https://doi.org/10.1590/s1413-415220220006

Using the internet to obtain dermatological information on patients from the public health network: a cross-sectional study
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Cruz, Bianca Latance da

; Minato, Arthur Cesar dos Santos

; Mourão, Ioana Bittencourt

; Pereira, Dayane Neres

; Oliveira, Miguel Huckembeck de

; Schmitt, Juliano Vilaverde

Anais Brasileiros de Dermatologia

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aug 2022, Volume 97 N. 4 Pages 528 - 531

Abstract: En | Text: En | PDF: En

https://doi.org/10.1016/j.abd.2020.12.015

Constitutional Dismemberment in Latin America
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ALBERT, RICHARD

; ZAIDEN BENVINDO, JULIANO

; JIMÉNEZ RAMÍREZ, MILTON CÉSAR

; VILLALONGA, CRISTIAN

Revista Derecho del Estado

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aug 2022, N. 52 Pages 97 - 133

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

RESUMEN Algunos cambios constitucionales son enmiendas constitucionales solo de nombre. En ocasiones, estos desmantelan la estructura básica de la constitución y, al mismo tiempo, sientan nuevos fundamentos para ella sobre principios contrarios a los antiguos. No debemos comprender los cambios a esta escala como meras enmiendas. Ellos se entienden mejor como desmembramientos constitucionales; es decir, esfuerzos deliberados por repudiar las características esenciales de la constitución y reemplazar sus fundamentos. Estos cambios re-articulan una o más de sus partes elementales, al alterar un derecho fundamental, el diseño institucional de su regulación orgánica o un aspecto determinante de su identidad. En el presente trabajo examinamos tres jurisdicciones de América Latina -Brasil, Chile y Colombia- para ilustrar este fenómeno y exponer sus variaciones y consecuencias.

ABSTRACT Some constitutional changes are constitutional amendments in name alone. These unusual constitutional changes dismantle the basic structure of the constitution while at the same time building a new foundation rooted in principles contrary to the old. They are self-conscious efforts to repudiate the essential characteristics of the constitution and to destroy its foundations. We should not understand changes on this scale as mere amendments. They are better understood as constitutional dismemberments. These constitutional changes disassemble one or more of the constitution's elemental parts by altering a fundamental right, a load-bearing structural design, or a core aspect of the identity of the constitution. In this article, we draw from three jurisdictions in Latin America-Brazil, Chile, and Colombia-to illustrate this phenomenon, to expose its variations, and to suggest that it entails serious implications.

https://doi.org/10.18601/01229893.n52.04

10.

Aspects of trauma related to violence, accidents and falls before and during the COVID-19 pandemic
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Fermandes, Paulo Cesar Rozental

; Ilias, Elias Elias Jirjoss

; Ribeiro, Ana Paula

; Garcia, Diego Ferreira Andrade

; Pereira, Thales Felipe dos Santos

; Freitas, Letícia Dantas Marques de

; Leite, Isabelle Sacchi

; Nascimento, Lucas Netto

; França, Carolina Nunes

; Juliano, Yara

; Novo, Neil Ferreira

Medicina Legal de Costa Rica

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mar 2022, Volume 39 N. 1 Pages 81 - 97

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Introducción: El trauma es la segunda causa de mortalidad y la sexta de hospitalización en el país, siendo la violencia, los accidentes y las caídas las más prevalentes. Sin embargo, el país está experimentando reflejos de una pandemia de COVID-19, junto a una falta de estudios sobre el trauma, así como sobre la atención clínica. Objetivo: Analizar las características clínicas y epidemiológicas del trauma junto a la violencia, accidentes y caídas entre los años 2019, 2020 y 2021, considerados antes y durante la pandemia COVID-19. Materiales y métodos: Estudio de cohorte retrospectivo, con adultos de 25 a 55 años, que sufrieron trauma relacionado con violencia, caídas y otros accidentes, en el período comprendido entre marzo y junio de 2019, 2020 y 2021, en la ciudad de São Paulo. Las encuestas de datos fueron realizadas por el sistema TABNET, por el Departamento Municipal de Salud. Dentro de este sistema, la búsqueda se realizó a través del Sistema de Información para la Vigilancia de Accidentes, de la Coordinación de Vigilancia en Salud, en el cual las situaciones de violencia fueron notificadas y registradas por el Sistema Nacional de Información de Enfermedades Notificables. Posteriormente, se accedió al Sistema de Información de Vigilancia de Violencia y Accidentes, con enfoque en notificaciones y registro de caídas y otros accidentes. Resultados: El trauma siguió siendo más prevalente para los hombres, con educación primaria completa y raza predominantemente entre blancos y morenos. Al analizar los diferentes tipos de violencia: física, tortura y sexual, hubo mayores porcentajes de prevalencia durante el año 2019, período prepandémico de COVID-19, a excepción de la violencia psicológica / moral, que fue mayor en 2021. Nótese que los diferentes mecanismos de violencia fueron significativamente más prevalentes en 2019, así como las diferentes causas de violencia, caídas y traumatismos automovilísticos que involucran a peatones, ocupantes, conductores y pasajeros. La atención ambulatoria confirmó la tendencia de superioridad en el período prepandémico, sin embargo, la atención hospitalaria de emergencia mostró un mayor número de solicitudes en 2020 y 2021. Conclusión: Los traumas de violencia, accidentes y caídas son más prepandémico en comparación con el período durante la pandemia COVID-19; así como la búsqueda de asistencia sanitaria en hospitales y clínicas. Estos hallazgos muestran una posible reducción en los informes de trauma y una menor demanda de asistencia durante la pandemia.

Abstract Introduction: Trauma is the second leading cause of mortality and the sixth leading cause of hospitalization in the country, with violence, accidents, and falls being the most prevalent. However, the country is experiencing reflexes of the COVID-19 pandemic, together with a lack of studies on trauma, as well as on clinical care. Objective: To analyze the clinical and epidemiological characteristics of trauma related to violence, accidents, and falls among the years 2019, 2020, and 2021, considered as before and during the COVID-19 pandemic. Material and Methods: Retrospective cohort study, with adults aged 25-55 years, who suffered trauma related to violence, falls, and other accidents, in the period between March and June of 2019, 2020, and 2021, in the city of São Paulo. Data surveys were carried out using the TABNET system, of the Municipal Health Department. Within this system, the search was carried out through the Information System for the Surveillance of Accidents, of the Coordination of Health Surveillance, in which situations of violence were notified and recorded by the National Information System for Notifiable Diseases. Subsequently, the Information System for Surveillance of Violence and Accidents was accessed, focusing on notifications and records of falls and other accidents. Results: Trauma remained more prevalent for males, with complete primary education, and ethnicity predominantly between white or brown. When analyzing the different types of violence: physical, torture, and sexual, there was a prevalence of higher percentages during the year 2019, the pre-pandemic period of COVID-19, except for psychological/moral violence, which was higher in 2021. It should also be noted that the different mechanisms of violence were significantly more prevalent in 2019, as well as the different causes of violence, falls, and car trauma involving pedestrians, occupants, drivers, and passengers. Outpatient care confirmed the higher trend in the pre-pandemic period; however, emergency hospital care showed a greater number of requests in 2020 and 2021. Conclusión: Trauma from violence, accidents, and falls was higher pre-pandemic compared to the period during the COVID-19 pandemic; as well as the search for health care in hospitals and outpatient clinics. These findings show a possible reduction in trauma reports and lower demand for assistance during the pandemic.

11.

Covalent Immobilization of Lipase on Bacterial Cellulose Membrane and Nanocellulose
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Brisola, Juliano

; Andrade, Gabriel Jonathan Sousa

; Oliveira, Sabrina Alves de

; Viana, Renato Marcio Ribeiro

; Tischer, Paula Cristina de Sousa Faria

; Tischer, Cesar Augusto

Materials Research

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2022, Volume 25 elocation e20210350

Abstract: En | Text: En | PDF: En

Abstract The cellulose from Komagataeibacter hansenii is synthesized as a thin film at the surface of glucose based media. Strong acid hydrolysis release sections of crystalline cellulose chains in nanometric scale that leads to persistent suspensions in water. The cellulose anhydro-glucose hydroxyls are suitable to receive functional groups as enzymes, and lipases have great economic value being a valuable model for protein immobilization. In this work both, the membrane of bacterial cellulose as well the nanocellulose produced trough acid hydrolysis, was functionalized with a lipase. The bacterial cellulose membranes were produced by Hestrin-Schramm medium, and nanocelluloses produced from the pristine material was characterized using techniques as 13C solid state NMR and transmission electron microscopy (TEM). The pristine membranes and nanocellulose were functionalized with succinic acid as linker, then lipase was conjugated using EDC (N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride), and NHS (N-Hydroxysuccinimide). The effectiveness of the chemical process was characterized, and the lipase activity were measured. The presence of the succinic acid and amide linkage, as well physical-chemical changes on the functionalized polysaccharide. Hence, we inferred that after immobilization the enzyme maintained its activity in both cellulose and the cellulose membrane.

https://doi.org/10.1590/1980-5373-mr-2021-0350

12.

Influence of carbon black trimodal mixture on LDPE films properties: Part1 - DOE
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Barbosa, Juliano Martins

; Beatrice, Cesar Augusto Gonçalves

; Pessan, Luiz Antonio

Polímeros

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2022, Volume 32 N. 3 elocation e2022029

Abstract: En | Text: En | PDF: En

Abstract In this study, the influence of carbon black (CB) trimodal mixture, with different medium particle sizes, on the colorimetric and rheological properties of polyethylene was evaluated. Three different types of CB were selected, with particle sizes of 15nm (S), 38nm (M), and 75nm (L) and combined, generating a Design of Experiments (DOE) with 19 formulations to be dispersed at 30% in low density polyethylene (LDPE) in twin screw extruder. Such formulations were evaluated in performance and process properties, such as Tint Strength, Melt Flow Index (MFI), and Total Transmittance (TT). It was observed that the mixtures between small (S) and medium (M) particles developed greater tinting strength and lower viscosity, demonstrating the synergy of the mixture, which was superior in the performance of the mixture containing only a particular of 15nm (S) that would have greater potential for results.

https://doi.org/10.1590/0104-1428.20220039

13.

Influence of carbon black trimodal mixture on LDPE films properties: Part2 – SME
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Barbosa, Juliano Martins

; Beatrice, Cesar Augusto Gonçalves

; Pessan, Luiz Antonio

Polímeros

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2022, Volume 32 N. 3 elocation e2022030

Abstract: En | Text: En | PDF: En

Abstract In this work, the influence of Specific Mechanical Energy (SME) to disperse a trimodal distribution of carbon black (CB) by extrusion was studied to evaluating the effect on LDPE films properties (colorimetric and rheological). Three types of CB were previously evaluated (PART1) and determined that the best formulation was the combination between small (S) and medium (M) particles (F18 and F13), obtaining greater tinting strength with lower viscosity. In this work (PART2), these formulations were processed with different SME levels by varying the extrusion parameters, like screw rotation speed (N) and feed rate (Q), modulate the SME. The result of each process was evaluated by Tinting Strength, MFI, Total Transmittance and it was determined that the process with 600 rpm and 10 kg/h feed rate, generating a SME of 0.29 kWh/kg for F18-P03, developed the best results, mainly in the Tinting Strength, from 126.7% to 133.2% related to F18 (PART1).

https://doi.org/10.1590/0104-1428.20220053

14.

Estratigrafia e zooarqueologia de cerritos de Santa Vitória do Palmar, Rio Grande do Sul. Novos dados sobre o sítio RS-158: Alberto Talayer
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Pavei, Diego Dias

; Santos, Marcos César Pereira

; Biffi, Vitor Hugo Rosa

; Bica, Carla

; Pestana, Marlon Borges

; Campos, Juliano Bitencourt

Boletim do Museu Paraense Emílio Goeldi. Ciências Humanas

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2022, Volume 17 N. 2 elocation e20210009

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Este estudo visa apresentar os resultados estratigráficos e zooarqueológicos do sítio arqueológico RS-158: Alberto Talayer, localizado no município de Santa Vitória do Palmar, Rio Grande do Sul. O objetivo é revisar as informações estratigráficas das campanhas de escavação dos anos 1970 e apresentar novos resultados zooarqueológicos e estratigráficos da escavação realizada em 2014. Os dados estratigráficos indicam que as ocupações desse sítio possuem uma sequência com mais de 2 metros de profundidade, com cinco camadas e indícios de diferentes níveis de ocupação (níveis arqueológicos IIa e IIIa), marcadas por períodos pré-cerâmico e cerâmico (tradição Vieira). Nos dois montículos que compõem o sítio arqueológico RS-158, a caça de mamíferos teria sido a principal atividade econômica, se destacando com a abundância do veado-campeiro. O problema relativo à sobreposição de diferentes níveis arqueológicos em uma estrutura antrópica encontra nesse estudo um contributo direto com o estabelecimento de variados níveis de ocupação e sua correlação entre os diferentes montículos. Assim, o sítio apresenta características específicas do ambiente no qual se localiza, com interações com os ecossistemas pampeanos, como campos sulinos, rios e lagoas.

Abstract This study aims to present the stratigraphic and zooarchaeological results of the RS-158 archeological site Alberto Talayer, located in the municipality of Santa Vitória do Palmar, Rio Grande do Sul, Brazil. The study aims to review the stratigraphic information from the excavation campaigns of the 1970s and to present the new zoo-archaeological and stratigraphic results of the excavation carried out in 2014. The stratigraphic data indicate that the occupations of this site have a sequence of more than 2 meters in depth, with five layers, and evidence of different levels of occupation (archaeological levels IIa and IIIa) marked by pre-ceramic and ceramic periods (Vieira tradition). In the two mounds that make up the RS-158 archaeological site, hunting of mammals would have been the main economic activity, as shown by the abundance of pampas deer. Thus, the site presents specific characteristics of the environment in which it is located, with interactions with Pampa ecosystems such as its southern plains, rivers and lakes.

https://doi.org/10.1590/2178-2547-bgoeldi-2021-0009

15.

Posicionamento Brasileiro sobre o Uso da Multimodalidade de Imagens na Cardio-Oncologia – 2021
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Melo, Marcelo Dantas Tavares de

; Paiva, Marcelo Goulart

; Santos, Maria Verônica Câmara

; Rochitte, Carlos Eduardo

; Moreira, Valéria de Melo

; Saleh, Mohamed Hassan

; Brandão, Simone Cristina Soares

; Gallafrio, Claudia Cosentino

; Goldwasser, Daniel

; Gripp, Eliza de Almeida

; Piveta, Rafael Bonafim

; Silva, Tonnison Oliveira

; Santo, Thais Harada Campos Espirito

; Ferreira, Waldinai Pereira

; Salemi, Vera Maria Cury

; Cauduro, Sanderson A.

; Barberato, Silvio Henrique

; Lopes, Heloísa M. Christovam

; Pena, José Luiz Barros

; Rached, Heron Rhydan Saad

; Miglioranza, Marcelo Haertel

; Pinheiro, Aurélio Carvalho

; Vrandecic, Bárbara Athayde Linhares Martins

; Cruz, Cecilia Beatriz Bittencourt Viana

; Nomura, César Higa

; Cerbino, Fernanda Mello Erthal

; Costa, Isabela Bispo Santos da Silva

; Coelho Filho, Otavio Rizzi

; Carneiro, Adriano Camargo de Castro

; Burgos, Ursula Maria Moreira Costa

; Fernandes, Juliano Lara

; Uellendahl, Marly

; Calado, Eveline Barros

; Senra, Tiago

; Assunção, Bruna Leal

; Freire, Claudia Maria Vilas

; Martins, Cristiane Nunes

; Sawamura, Karen Saori Shiraishi

; Brito, Márcio Miranda

; Jardim, Maria Fernanda Silva

; Bernardes, Renata Junqueira Moll

; Diógenes, Tereza Cristina

; Vieira, Lucas de Oliveira

; Mesquita, Claudio Tinoco

; Lopes, Rafael Willain

; Segundo Neto, Elry Medeiros Vieira

; Rigo, Letícia

; Marin, Valeska Leite Siqueira

; Santos, Marcelo José

; Grossman, Gabriel Blacher

; Quagliato, Priscila Cestari

; Alcantara, Monica Luiza de

; Teodoro, José Aldo Ribeiro

; Albricker, Ana Cristina Lopes

; Barros, Fanilda Souto

; Amaral, Salomon Israel do

; Porto, Carmen Lúcia Lascasas

; Barros, Marcio Vinícius Lins

; Santos, Simone Nascimento dos

; Cantisano, Armando Luís

; Petisco, Ana Cláudia Gomes Pereira

; Barbosa, José Eduardo Martins

; Veloso, Orlando Carlos Glória

; Spina, Salvador

; Pignatelli, Ricardo

; Hajjar, Ludhmilla Abrahão

; Kalil Filho, Roberto

; Lopes, Marcelo Antônio Cartaxo Queiroga

; Vieira, Marcelo Luiz Campos

; Almeida, André Luiz Cerqueira

Arquivos Brasileiros de Cardiologia

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oct 2021, Volume 117 N. 4 Pages 845 - 909

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20200266 103 downloads

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