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Biodegradation of poly(lactic acid) waste from 3D printing polylactic poly lactic acid D
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Benhami, Virginia Mendonça Lourenço

; Longatti, Silvia Maria de Oliveira

; Moreira, Fatima Maria de Souza

; Sena Neto, Alfredo Rodrigues de

Polímeros

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2024, Volume 34 N. 2 elocation e20240013

Abstract: En | Text: En | PDF: En

Abstract One of the most widespread applications of poly(lactic acid) (PLA) is as a raw material in the form of filaments for 3D printing. To improve final disposal alternatives and minimize their effects on the environment, the aim of this study is to determine the biodegradability of 3D-printed PLA waste composted in a landfill with leachate soil and garden soil for 90 days and 180 days. The soil characteristics and material properties were evaluated by laboratory analyses. Changes in soil chemical composition and the loss of microorganisms were recorded. The thermal and mechanical properties of PLA did not change significantly, but fungal colonies, encrustation, and changes in the original colour were found, indicating the onset of surface biodegradation of the samples. Controlled conditions or longer periods would be needed to maintain an ecosystem favourable to biodegradation; otherwise, PLA could accumulate in the environment, causing future pollution problems. polylactic poly lactic acid (PLA D printing environment 3Dprinted Dprinted printed 9 18 analyses recorded significantly colonies encrustation found samples otherwise problems 1

https://doi.org/10.1590/0104-1428.20230058

Nature-Inspired Frequency Selective Surface in Fibonacci Spiral with Closely Resonant Bands NatureInspired Nature Inspired
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Oliveira, Maciel Alves de

; Lazaridis, Pavlos I.

; Zaharis, Zaharias D.

; Gomes Neto, Alfredo

; Campos, Antônio L. P. S.

; Serres, Alexandre J. R.

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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2024, Volume 23 N. 2 elocation e2024280445

Abstract: En | Text: En | PDF: En

Abstract This paper presents a novel nature-inspired tri-band frequency selective surface (FSS) characterized by closely spaced bands, angular stability, and polarization independence. The FSS element adopts a segmented Fibonacci spiral geometry. While a single-segmented Fibonacci spiral does not inherently possess polarization independence, the proposed proof of concept achieves this by cascading the same design geometry rotated by 90° between them. Resonant frequencies of 1.63 GHz, 2.46 GHz, and 3.43 GHz are achieved, with minimal separation ratios of 1.5 from the second to the first frequency and 1.4 from the third to the second. Additionally, angular stability is confirmed up to 45°. Simulation of the FSS is conducted using HFSS software, and the simulated results are rigorously validated against experimental data, demonstrating excellent agreement. natureinspired nature inspired triband tri band (FSS bands independence singlesegmented single 90 them 163 1 63 1.6 246 2 46 2.4 343 3 43 3.4 achieved 15 5 1. 14 4 Additionally 45 45° software data agreement 9 16 6 24 2. 34 3.

https://doi.org/10.1590/2179-10742024v23i2280445

Effectiveness and safety of ultra-low-dose spinal anesthesia versus perineal blocks in hemorroidectomy and anal fistula surgery: a randomized controlled trial ultralowdose ultra low dose surgery
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Santos, Rafael Peterson Soares

; Oliveira-Filho, Alfredo Dias de

; Lins Neto, Manoel Álvaro de Freitas

; Lins, Lucas Correia

; Barbosa, Fabiano Timbó

; Neves, Sabrina Joany Felizardo

Brazilian Journal of Anesthesiology

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dec 2023, Volume 73 N. 6 Pages 725 - 735

Abstract: En | Text: En | PDF: En

Abstract Background: Ultra-low-dose Spinal Anesthesia (SA) is the practice of employing minimal doses of intrathecal agents so that only the roots that supply a specific area are anesthetized. The aim of this study was to compare the effectiveness and safety of ultra-low-dose spinal anesthesia with that of Perineal Blocks (PB). Methods: A two-arm, parallel, double-blind randomized controlled trial comparing two anesthetic techniques (SA and PB) for hemorrhoidectomy and anal fistula surgery was performed. The primary outcomes were postoperative pain, complementation and/or conversion of anesthesia, and hemodynamic changes. Results: Fifty-nine patients were included in the final analysis. The mean pain values were similar in the first 48 h in both groups (p > 0.05). The individuals allocated to the SA group did not need anesthetic complementation; however, those in the PB group required it considerably (SA group, 0% vs. PB group, 25%; p = 0.005). Hemodynamic changes were more pronounced after PB: during all surgical times, the PB group showed lower MAP values and higher HR values (p < 0.05). Postoperative urinary retention rates were similar between both groups (SA group 0% vs. PB group 3.1%, p = 0.354). Conclusion: SA and PB are similarly effective in pain control during the first 48 h after hemorrhoidec-tomy and anal fistula surgery. Although surgical time was shorter among patients in the PB group, the SA technique may be preferable as it avoids the need for additional anesthesia. Furthermore, the group that received perineal blocks was under sedation with a considerable dose of propofol. Background Ultralowdose Ultra low anesthetized ultralowdose ultra PB. . (PB) Methods twoarm, twoarm arm, arm two-arm parallel doubleblind double blind performed andor or Results Fiftynine Fifty nine analysis 4 0.05. 005 0.05 0 05 0.05) however vs 25% 25 0.005. 0005 0.005 0.005) times 31 3 1 3.1% 0.354. 0354 0.354 354 0.354) Conclusion hemorrhoidec tomy Furthermore propofol (PB 00 0.0 2 000 0.00 3.1 035 0.35 35 0. 3. 03 0.3

https://doi.org/10.1016/j.bjane.2023.05.002

“Avançado” ou “precipitado”? Sobre o Modelo de Acesso Avançado/Aberto na Atenção Primária à Saúde
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Stelet, Bruno Pereira

; Modesto, Antônio Augusto Dall’Agnol

; Oliveira Neto, Alfredo de

; Aragão, Cristal Moniz de

; Reigada, Carolina Lopes de Lima

Trabalho, Educação e Saúde

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2022, Volume 20 elocation e00588191

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

Resumo O modelo de Acesso Avançado ou Aberto (Advanced/Open Access) vem sendo estimulado por gestores e valorizado pela medicina de família e comunidade brasileira como modelo de gestão da clínica na Equipe de Saúde da Família. Este artigo de revisão integrativa discute como essa tecnologia pode qualificar ou prejudicar a Atenção Primária à Saúde. Embora ajude a promover mudanças necessárias em agendas tradicionalmente voltadas para ações programáticas, o modelo tem um forte viés gerencialista. Ao desconsiderar premissas básicas, sua implantação pode resultar em sofrimento do profissional e em sua alienação perante o território e o cuidado integral em saúde, além de reforçar o modelo biomédico e a medicalização social. Apontamos caminhos para que ‘avançado’ não signifique ‘precipitado’, destacando que uma implantação com base no diálogo entre trabalhadores, gestores e usuários parece mais coerente com a própria literatura sobre Acesso Avançado e com a produção nacional sobre Acolhimento no Sistema Único de Saúde.

Abstract The Advanced/Open Access model has been encouraged by managers and valued by Brazilian family and community medicine as a model of clinical management in the Family Health Team. This integrative review article discusses how this technology can qualify or hinder Primary Health Care. Although it helps to promote necessary changes in agendas traditionally focused on programmatic actions, the model has a strong managerialist bias. By disregarding basic premises, its implementation may result in professional suffering and alienation from the territory and integral health care, besides reinforcing the biomedical model and social medicalization. We point out ways for ‘advanced’ not to mean ‘precipitate’, highlighting that an implementation based on dialogue among workers, managers, and users seems more coherent with the literature on Advanced Access and with the national production on Welcoming in the Unified Health System.

Resumen El modelo de Acceso Avanzado o Abierto (Advanced/Open Access) ha sido estimulado por los gestores y valorado por la medicina de familia y por la comunidad brasileña como modelo de gestión de la clínica en el Equipo de Salud de la Familia. Este artículo de revisión integradora analiza cómo esta tecnología puede calificar o perjudicar la Atención Primaria de Salud. Si bien ayuda a promover cambios necesarios en agendas tradicionalmente enfocadas en acciones programáticas, el modelo tiene un fuerte sesgo administrativista. Al desconocer premisas básicas, su implementación puede resultar en sufrimiento del profesional y en su alienación ante el territorio y del cuidado integral en salud, además de reforzar el modelo biomédico y la medicalización social. Señalamos caminos para que ‘avanzado’ no signifique ‘apresurado’, destacando que una implementación basada en el diálogo entre trabajadores, gestores y usuarios parece más coherente con la literatura sobre Acceso Avanzado y con la producción nacional sobre Acogida en el Sistema Único de Salud.

https://doi.org/10.1590/1981-7746-ojs588

A Brazilian Amazon Species with High Potential to Phytoextract Potential Toxic Elements
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Souza, Natalia Dias de

; Sant’Anna Neto, Analder

; Santos Junior, Alfredo José dos

; Oliveira, Ana Carolina Lindolfo de

; Sampaio, Danielle Affonso

; Cupertino, Gabriela Fontes Mayrinck

; Gonçalves, Antônio Natal

; Dias Júnior, Ananias Francisco

Floresta e Ambiente

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2022, Volume 29 N. 1 elocation e20210076

Abstract: En | Text: En | PDF: En

Abstract The Euterpe oleracea Mart. has great importance in the neotropical forestry economy. Its berry is a product of great commercial value used extensively for human consumption. Most E. oleracea researches evaluate its food features, however, its potential use for phytoremediation and stipe use remains unknown. This research aimed to assess the seedling’s phytoextraction potential and the structural chemical composition in the seedlings and mature palm trees stipes. We used the Energy-dispersive X-ray fluorescence analysis to determine the concentration of the chemical elements. E. oleracea seedlings showed a great phytoextraction potential for aluminum and iron. The aluminum seedlings concentration was four times higher than preconized as a hyperaccumulator species. Calcium concentration was lower than considered normal, which may represent an antagonism effect caused by the strong presence of aluminum and iron. The fast uptake and accumulation of the seedlings highlight the potential to use this species in phytoremediation programs.

https://doi.org/10.1590/2179-8087-floram-2021-0076

THE USE OF ANTIFIBRINOLYTICS IN HIP TRAUMA SURGERY IN A PUBLIC HEALTH SYSTEM: A PROSPECTIVE STUDY
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OLIVEIRA, JOSÉ ALBERTO ALVES

; BRITO, GABRIELLA CRISTINA COELHO DE

; BEZERRA, FRANCISCA MAGNA PRADO

; CARVALHO NETO, CARLOS ALFREDO DE

; ALENCAR NETO, JONATAS BRITO DE

; IBIAPINA, ROBERTO CÉSAR PONTES

Acta Ortopédica Brasileira

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dec 2021, Volume 29 N. 6 Pages 304 - 307

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

RESUMO Objetivo: Avaliar o uso do ácido tranexâmico (ATX) e aminocapróico (AEAC) na redução da perda sanguínea em cirurgias para trauma do quadril e femur proximal. Métodos: Estudo prospectivo com 49 pacientes operados em hospital de trauma entre nov./15 e fev./17. Pacientes divididos em dois grupos: ATX (n = 24) e AEAC (n = 25). Comparações feitas de acordo com o sexo, idade na cirurgia, ASA, tipo de fratura e cirurgia, perda sanguínea estimada durante a cirurgia, níveis de hemoglobina e hematócrito pré e pós-operatório e o custo das medicações. Dados processados no SPSS 22.0 com nível de significância de p < 0,05. Resultados: Não foram encontradas diferenças significativas entre as seguintes variáveis: idade, sexo, ASA e perda sanguínea estimada durante a cirurgia. Nenhum paciente necessitou de transfusão sanguínea nos dois grupos. Na avaliação pós-operatória, não houve diferença significativa entre os grupos nos valores de queda da hemoglobina e hematócrito (p > 0,05). Analisando os custos de ambos as medicações, observou-se um custo mais elevado do AEAC em relação ao ATX (R$ 90,00 - R$ 15), resultando em R$ 75, 00 a mais por paciente. Conclusão: O uso dos antifibrinolíticos foi eficiente na redução da perda sanguínea, sem a necessidade de hemotransfusões. Nível de evidência II, Estudo Prospectivo Comparativo.

ABSTRACT Objective: To evaluate the use of tranexamic acid (TXA) and ε-aminocaproic acid (EACA) in reducing blood loss in hip and proximal femur trauma surgery. Methods: Prospective study with 49 patients surgically treated in a trauma hospital between Nov/2015 and Feb/2017. The patients were divided in two groups: TXA (n = 24) and EACA (n = 25). The comparison was made according to gender, age at the time of surgery, ASA, fracture and surgery type, estimated blood loss during surgical approach, hemoglobin and hematocrit levels pre and post-operative, and pharmacological cost. The data was processed using SPSS 22.0 with significance level of p < 0,05. Results: No significant difference was found in the variables age, gender, ASA and estimated blood loss during surgical approach. No patient needed blood transfusion. When evaluated post-operatively, the hemoglobin and hematocrit values decrease had no significant difference between the antifibrinolytics (p > 0.05). When analyzing total cost for both pharmacological agents, higher cost was observed in EACA than in TXA (US$ 16.09 - US$ 2.73), resulting in a US$ 13.36 addition per patient. Conclusion: Antifibrinolytic use was efficient on lowering the total blood loss, without the need of blood transfusion. Level of evidence II, Prospective Comparative Study.

https://doi.org/10.1590/1413-785220212906244502 7 downloads

Recommendations by the Scientific Department of Neuroimmunology of the Brazilian Academy of Neurology (DCNI/ABN) and the Brazilian Committee for Treatment and Research in Multiple Sclerosis and Neuroimmunological Diseases (BCTRIMS) on vaccination in general and specifically against SARS-CoV-2 for patients with demyelinating diseases of the central nervous system
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Becker, Jefferson

; Ferreira, Lis Campos

; Damasceno, Alfredo

; Bichuetti, Denis Bernardi

; Christo, Paulo Pereira

; Callegaro, Dagoberto

; Peixoto, Marco Aurélio Lana

; Sousa, Nise Alessandra De Carvalho

; Almeida, Sérgio Monteiro De

; Adoni, Tarso

; Santiago-Amaral, Juliana

; Junqueira, Thiago

; Pereira, Samira Luisa Apóstolos

; Gomes, Ana Beatriz Ayroza Galvão Ribeiro

; Pitombeira, Milena

; Paolilo, Renata Barbosa

; Grzesiuk, Anderson Kuntz

; Piccolo, Ana Claudia

; D´Almeida, José Arthur Costa

; Gomes Neto, Antonio Pereira

; Oliveira, Augusto Cesar Penalva De

; Oliveira, Bianca Santos De

; Tauil, Carlos Bernardo

; Vasconcelos, Claudia Ferreira

; Kaimen-Maciel, Damacio

; Varela, Daniel

; Diniz, Denise Sisterolli

; Oliveira, Enedina Maria Lobato De

; Malfetano, Fabiola Rachid

; Borges, Fernando Elias

; Figueira, Fernando Faria Andrade

; Gondim, Francisco De Assis Aquino

; Passos, Giordani Rodrigues Dos

; Silva, Guilherme Diogo

; Olival, Guilherme Sciascia Do

; Santos, Gutemberg Augusto Cruz Dos

; Ruocco, Heloisa Helena

; Sato, Henry Koiti

; Soares Neto, Herval Ribeiro

; Cortoni Calia, Leandro

; Gonçalves, Marcus Vinícius Magno

; Vecino, Maria Cecilia Aragón De

; Pimentel, Maria Lucia Vellutini

; Ribeiro, Marlise De Castro

; Boaventura, Mateus

; Parolin, Mônica Koncke Fiuza

; Melo, Renata Brant De Souza

; Lázaro, Robson

; Thomaz, Rodrigo Barbosa

; Kleinpaul, Rodrigo

; Dias, Ronaldo Maciel

; Gomes, Sidney

; Lucatto, Simone Abrante

; Alves-Leon, Soniza Vieira

; Fukuda, Thiago

; Ribeiro, Taysa Alexandrino Gonsalves Jubé

; Winckler, Thereza Cristina D’ávila

; Fragoso, Yara Dadalti

; Nascimento, Osvaldo José Moreira Do

; Ferreira, Maria Lucia Brito

; Mendes, Maria Fernanda

; Brum, Doralina Guimarães

; Glehn, Felipe Von

Arquivos de Neuro-Psiquiatria

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nov 2021, Volume 79 N. 11 Pages 1049 - 1061

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

RESUMO O DC de Neuroimunologia da ABN e o BCTRIMS trazem, nesse documento, as recomendações sobre vacinação da população com doenças desmielinizantes do sistema nervoso central (SNC) contra infecções em geral e contra o coronavírus da síndrome respiratória aguda grave 2 (SARS-CoV-2), causador da COVID-19. Destaca-se a gravidade do atual momento frente ao avanço da COVID-19 em nosso País, o que torna mais evidente e importante a criação de guia de referência para orientação aos médicos, pacientes e autoridades de saúde pública quanto à vacinação, meio efetivo e seguro no controle de determinadas doenças infecciosa. O DCNI/ABN e o BCTRIMS recomendam que os pacientes com doenças desmielinizantes do SNC (ex., EM e NMOSD) sejam constantemente monitorados, quanto a atualização do seu calendário vacinal, especialmente, no início ou antes da mudança do tratamento com uma droga modificadora de doença (DMD). É importante também salientar que as vacinas são seguras e os médicos devem estimular o seu uso em todos os pacientes. Evidentemente, deve ser dada especial atenção às vacinas com vírus vivos atenuados. Por fim, é importante que os médicos verifiquem qual DMD o paciente está em uso e quando foi feita a sua última dose, pois cada fármaco pode interagir de forma diferente com a indução da resposta imune.

ABSTRACT The Scientific Department of Neuroimmunology of the Brazilian Academy of Neurology (DCNI/ABN) and Brazilian Committee for Treatment and Research in Multiple Sclerosis and Neuroimmunological Diseases (BCTRIMS) provide recommendations in this document for vaccination of the population with demyelinating diseases of the central nervous system (CNS) against infections in general and against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes COVID-19. We emphasize the seriousness of the current situation in view of the spread of COVID-19 in our country. Therefore, reference guides on vaccination for clinicians, patients, and public health authorities are particularly important to prevent some infectious diseases. The DCNI/ABN and BCTRIMS recommend that patients with CNS demyelinating diseases (e.g., MS and NMOSD) be continually monitored for updates to their vaccination schedule, especially at the beginning or before a change in treatment with a disease modifying drug (DMD). It is also important to note that vaccines are safe, and physicians should encourage their use in all patients. Clearly, special care should be taken when live attenuated viruses are involved. Finally, it is important for physicians to verify which DMD the patient is receiving and when the last dose was taken, as each drug may affect the induction of immune response differently.

https://doi.org/10.1590/0004-282x-anp-2021-0162 1 downloads

Intelligent Optical Temperature Sensor based on Polyglycerol Dendrimer Microspheres Encapsulating Hopeites
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Oliveira, Mayara Lima Peres de

; Wanderley Neto, Estácio Tavares

; Queiroz, Alfredo Antonio Alencar Exposito De

; Queiroz, Alvaro Antonio Alencar de

Materials Research

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2021, Volume 24 N. 4 elocation e20200568

Abstract: En | Text: En | PDF: En

Abstract Optical thermometry is a growing technological field which exploits the ability of certain materials to change their optical properties with temperature. In this work, poly(glycerol dendrimer) microspheres (PGLyD) encapsulating cobalt-doped hopeite (CoHo) was synthesized for its potential use as optical thermometer. The structure of the CoHo:PGLyD was studied using scanning electron microscopy (SEM), infrared spectroscopy (ATR-FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). On the basis of SEM images, the CoHo:PGLyD exhibited a spherical shape in which around 80% of the microspheres were within 0.82 µm. A multilayer feed-forward artificial neural network (MLP-ANN) was used to extract the chromaticity profile dependence of the CoHo:PGLyD with temperature. A color change was observed for the CoHo:PGLyD, going from dark blue (490-550 nm) to pale pink (650 nm) when the temperature changed from 20-200 °C, respectively. These results suggest that CoHo:PGLyD is a promising material for temperature sensing applications.

https://doi.org/10.1590/1980-5373-mr-2020-0568 110 downloads

Modeling the Resonant Behavior of Continuously Reconfigurable FSS Based on Four Arms Star Geometry
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Gomes Neto, Alfredo

; Silva, Jefferson Costa e

; Barboza, Amanda Gomes

; Coutinho, Ianes Barbosa Grécia

; Alencar, Marina de Oliveira

; Andrade, Mylenna Correia de

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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sep 2020, Volume 19 N. 3 Pages 415 - 427

Abstract: En | Text: En | PDF: En

Abstract A modeling of the resonant behavior of a continuously reconfigurable frequency selective surface, FSS, is described in this paper. The FSS is based on four arms star geometry and its reconfigurability is achieved by the use of varactors. FSS, four arms star geometry and varactor principles are explained. Considering available a set of measured or numerical data, with frequency responses for different varactor capacitance values, the FSS equivalent circuit is stablished. Then, the varactor capacitance effect is included and the resonant behavior can be easily determined. After stablished, the FSS equivalent circuit can be applied even for a different varactor. In order to validate the proposed modeling, the equivalent circuit of a reconfigurable FSS using the varactor SMV1231 (0.466 pF ≤ Cv ≤ 2.35 pF is obtained. The equivalent circuit results are compared to numerical (ANSYS) and measured results, verifying a good agreement. Following, for the same geometry, the equivalent circuit is applied to a reconfigurable FSS using the SMV1234 varactor (1.32 pF ≤ Cv ≤ 9.63 pF) and once more a good agreement between the results is observed, indicating the applicability of the proposed modeling, which is especially attractive for optimization process.

https://doi.org/10.1590/2179-10742020v19i3930 386 downloads

10.

Double Layer Frequency Selective Surface for Ultra Wide Band Applications with Angular Stability and Polarization Independence
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Segundo, Francisco C. G. da Silva

; Campos, Antonio Luiz P. S.

; Gomes Neto, Alfredo

; Alencar, Marina de Oliveira

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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jul 2019, Volume 18 N. 3 Pages 328 - 342

Abstract: En | Text: En | PDF: En

Abstract In this paper, a double layer stopband Frequency Selective Surface (FSS) for Ultra-Wide Band (UWB) applications is presented. The proposed FSS consists of two cascaded conventional FSS, one with double square loops and other with square loops. The − 10dB frequency band from 3.00 GHz to 11.64 GHz is achieved, with a fractional bandwidth of 149 %. Effects of angular stability and polarization independence over the frequency response are investigated and conclusions are presented. In order to show transmission performance, the FSS was simulated by ANSYS HFSS. The FSS shows angular stability and polarization independence in entire UWB band (3.10 – 10.60 GHz). A prototype was built and measurements were performed. A good agreement between simulated and measured results was observed.

https://doi.org/10.1590/2179-10742019v18i31696 1070 downloads

11.

Internet and hiv/aids: a virtual ethnography on Facebook
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Oliveira Neto, Alfredo de

; Camargo Júnior, Kenneth Rochel de

Interface - Comunicação, Saúde, Educação

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2019, Volume 23 elocation e180580

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

O estudo identificou e analisou algumas interações na internet no cotidiano de pessoas vivendo com HIV/AIDS (PVHA) no Brasil. Como método, realizamos entrevistas com PVHA utilizando análise de conteúdo e uma etnografia virtual de um grupo fechado de PVHA no Facebook. Chegamos aos seguintes resultados: a sociabilidade produzida na internet ajuda a reduzir o sofrimento em relação ao preconceito; não há muitos espaços de acolhimento para PVHA na internet; PVHA vinculadas às redes sociais têm mais incentivo para não desistir da medicação; as negociações sobre medicação e sintomas ocorrem nas redes sociais. Conclui-se que há necessidade de ter espaços de acolhimento às PVHA na internet garantidas por políticas públicas; educação médica precisa abordar questões relacionadas à internet e saúde.

This paper identified and analyzed some interactions on the internet in the daily of people living with HIV and AIDS (PLHA) in Brazil. As methods we made interviews with PLHA analyzed by content analysis and a virtual ethnography of a secret group of PLHA on Facebook. These are the following results: sociability produced in the internet helps to reduce suffering in relation to prejudice; there are not many welcoming zones for PLHA on the internet; PLHA linked to social networks have more encouragement to not give up the medication; negotiations about medication and symptoms take place in social networks. We conclude that there is a need to have welcoming zones to PLHA on the internet guaranteed by public policy; medical education needs to cover issues related to the internet and health.

El estudio identificó y analizó algunas interacciones en internet en el cotidiano de personas que viven con VIH/SIDA (PVHA) en Brasil. Como método, realizamos entrevistas con PVHA utilizando análisis de contenido y una etnografía virtual de un grupo cerrado de PVHA en Facebook. Llegamos a los resultados siguientes: la sociabilidad producida en internet ayuda a reducir el sufrimiento con relación al prejuicio; no hay muchos espacios de acogida para PVHA en internet; PVHA vinculadas a las redes sociales tienen mayor incentivo para no desistir de la medicación; las negociaciones sobre medicación y síntomas ocurren en las redes sociales. Se concluye que existe la necesidad de tener espacios de acogida a PVHA en internet aseguradas por políticas públicas; la educación médica precisa abordar cuestiones relacionadas a internet y a la salud.

https://doi.org/10.1590/interface.180580

12.

Internet and hiv/aids: a virtual ethnography on Facebook
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Oliveira Neto, Alfredo de

; Camargo Júnior, Kenneth Rochel de

Interface - Comunicação, Saúde, Educação

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2019, Volume 23 elocation e180580

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

https://doi.org/10.1590/interface.180580 1518 downloads

13.

Complete supine percutaneous nephrolithotomy with GoPro®. Ten steps for success
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Vicentini, Fabio Carvalho

; Santos, Hugo Daniel Barone dos

; Batagello, Carlos Alfredo

; Amundson, Julia Rothe

; Oliveira Neto, Evaristo Peixoto

; Marchini, Giovanni Scala

; Srougi, Miguel

; Nahas, Willian Carlos

; Mazzucchi, Eduardo

International braz j urol

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oct 2018, Volume 44 N. 5 Pages 1046 - 1046

Abstract: En | Text: En | PDF: En

ABSTRACT Objective: To show a video of a complete supine Percutaneous Nephrolithotomy (csPCNL) performed for the treatment of a staghorn calculus, from the surgeon's point of view. The procedure was recorded with a GoPro® camera, demonstrating the ten essential steps for a successful procedure. Materials and methods: The patient was a 38 years-old woman with 2.4cm of left kidney lower pole stone burden who presented with 3 months of lumbar pain and recurrent urinary tract infections. She had a previous diagnosis of polycystic kidney disease and chronic renal failure stage 2. CT scan showed two 1.2cm stones in the lower pole (Guy's Stone Score 2). She had a previous ipsilateral double J insertion due to an obstructive pyelonephritis. The csPCNL was uneventful with a single access in the lower pole. The surgeon had a Full HD GoPro Hero 4 Session® camera mounted on his head, controlled by the surgical team with a remote control. All of the mains steps were recorded. Informed consent was obtained prior to the procedure. Results: The surgical time was 90 minutes. Hemoglobin drop was 0.5g/dL. A post-operative CT scan was stone-free. The patient was discharged 36 hours after surgery. The camera worked properly and didn't cause pain or muscle discomfort to the surgeon. The quality of the recorded movie was excellent. Conclusion: GoPro® camera proved to be a very interesting tool to document surgeries without interfering with the procedure and with great educational potential. More studies should be conducted to evaluate the role of this equipment.

https://doi.org/10.1590/s1677-5538.ibju.2017.0337 589 downloads

14.

A relação entre o complexo industrial e as comunidades científicas: o desafio em tempos de filter bubble
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Oliveira Neto, Alfredo de

Interface - Comunicação, Saúde, Educação

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mar 2018, Volume 22 N. 64 Pages 263 - 266

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.1590/1807-57622017.0260 1076 downloads

15.

A relação entre o complexo industrial e as comunidades científicas: o desafio em tempos de filter bubble
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Oliveira Neto, Alfredo de

Interface - Comunicação, Saúde, Educação

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mar 2018, Volume 22 N. 64 Pages 263 - 266

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.1590/1807-57622017.0260 31 downloads

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