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Os rastros de Changó no Pacífico Sul colombiano
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Marques, Lucas

Horizontes Antropológicos

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apr 2025, Volume 31 N. 71 elocation e710406

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

Resumo O conceito de huellas de africanía foi introduzido por Nina de Friedemann e Jaime Arocha nos anos 1980, gerando críticas por uma suposta essencialização das culturas afro-americanas. Neste artigo, proponho uma revisão desse conceito, partindo de uma pesquisa em Tumaco, Colômbia, sobre os encontros entre distintas práticas religiosas afro-americanas. Foco nos diversos caminhos traçados pelo orixá Changó na região, entidade presente em várias religiões de matriz africana nas Américas. Acompanho etnograficamente como, por meio dessa entidade, um grupo de pessoas em Tumaco buscou retomar territórios existenciais e (re)criar práticas religiosas africanas na Colômbia. Ao seguir os rastros de Changó, concluo com uma reflexão sobre a ideia de “rastros”, pensando-a não como simples sobrevivências de um passado histórico, mas como virtualidades que podem ser atualizadas, caminhos que podem ser retomados e reativados em um processo propriamente cosmopolítico.

Abstract The concept of huellas de africanía was introduced by Nina de Friedemann and Jaime Arocha in the 1980s, sparking criticism for purportedly essentializing Afro-American cultures. In this article, I propose a reassessment of this concept, drawing from research conducted in Tumaco, Colombia, on the intersections of various Afro-American religious practices. I focus on the diverse paths traced by the orisha Changó in the region, a deity present in various African-derived religions in the Americas. I seek to follow ethnographically how, through this deity, a group of people in Tumaco sought to reclaim existential territories and (re)create African religious practices in Colombia. By following Changó’s traces, I conclude with a reflection on the notion of “traces,” conceiving them not merely as survivals of a historical past but as potentialities that can be actualized, paths that can be reclaimed and reactivated in a properly cosmopolitical process.

https://doi.org/10.1590/1806-9983e710406

Antileishmanial Potential and Chemical Characterization of the Hydroalcoholic Extract Obtained from Lantana caatingensis Moldenke (Verbenaceae) Leaves and Its Polar Fractions
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Carmo, Iolanda S. do

; Lima Júnior, Paulo S.

; Lima, Sidney G. de

; Rêgo, Jardes F. do Sousa, Valéria C. de Santos, Laiz P. Carvalho, Rita de Cássia V. de Marques, Lucas M. M. Lopes, Norberto P. Carvalho, Fernando Aécio A. Lima Neto, José S. Citó, Antônia Maria G. L.

Journal of the Brazilian Chemical Society

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2025, Volume 36 N. 2 elocation e-20240113

Abstract: En | Text: En | PDF: En

Lantana caatingensis Moldenke (Verbenaceae) is an endemic plant from northeastern Brazil. However, its chemical composition is almost unknown. This study aimed to characterize the chemical compounds found in L. caatingensis and investigate the antileishmanial potential of its hydroalcoholic extract and polar fractions. Compounds present in the hydroalcoholic extract obtained from L. caatingensis leaves and its polar fractions (ethyl acetate and methanolic) were analyzed by liquid chromatography with a photodiode-array detector coupled to electrospray ionization quadrupole time-of-flight mass spectrometry. An antileishmanial assay was performed in a 96-well plate against Leishmania major promastigotes using resazurin on a plate spectrophotometer and the results were expressed as percentage of growth inhibition. Nine compounds were determined in the investigated extract and fractions, classified as flavonoids, flavonoid C-glycosides and phenylethanoid glycosides. The antileishmanial activity revealed that the hydroalcoholic extract and the ethyl acetate fraction were active against L. major promastigotes with inhibitory concentration of 71.78 and 26.86 µg mL-1, respectively, while the methanolic fraction was inactive (478.40 µg mL-1). This is the first report on the chemical composition and antileishmanial activity of L. caatingensis extracts. These results contribute to further knowledge of species belonging to the Lantana genus.

https://doi.org/10.21577/0103-5053.20240113

Growth of tomato seedlings: an approach with the logistic model as a function of the product of thermal efficiency and photosynthetically active radiation
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Diel, Maria Inês

; Lúcio, Alessandro Dal’Col

; Tartaglia, Francieli de Lima

; Sgarbossa, Jaqueline

; Tischler, André Luís

; Lambrecht, Darlei Michalski

; Zemolin, João Alberto

; Marques, Lucas Encarnação

Scientia Agricola

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2024, Volume 81 elocation e20220211

Abstract: En | Text: En | PDF: En

ABSTRACT This study aimed to evaluate the use of the product of thermal efficiency and photosynthetically active radiation (TEP) to model the growth of tomato seedlings across different growing seasons. The work was conducted in a completely randomized design with four replicates in two seasons (summer/autumn and winter/spring). Height, diameter, the Dickson’s Quality Index (DQI), and total plant mass (TPM) were measured at 15, 20, 25, 30, 35 and 40 days after sowing (DAS). The logistic model was fitted for each measured variable as a function of TEP, and the partial derivatives of the fitted function estimated the critical points. The results demonstrated that the logistic function effectively explained the nonlinear relationships of seedling growth. The fit quality parameters showed high fitted coefficients of determination and low values for the standard error of fit, residual standard deviation, and intrinsic and parametric nonlinearity. It was possible to characterize the growth process of tomato seedlings in both growth periods investigated. The logistic model fitted for the studied variables as a function of TEP becomes an accurate model capable of describing growth aspects of tomato seedlings, such as growth estimation, growth speed, and growth rate, essential parameters for decision-making in tomato cultivation.

https://doi.org/10.1590/1678-992x-2022-0211

Experimental plan for carrot culture
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Lambrecht, Darlei Michalski

; Sgarbossa, Jaqueline

; Diel, Maria Inês

; Lúcio, Alessandro Dal’Col

; Marques, Lucas Encarnação

; Raddatz, Iara Cristina

; Tischler, André Luís

; Tartaglia, Francieli de Lima

; Engers, Lana Bruna de Oliveira

; Soncini, Ingrid Rodrigues

; Kuhn, Marcielli Matiazzi

Ciência Rural

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2024, Volume 54 N. 10 elocation e20230428

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

ABSTRACT: The carrotculture stands out on the world stage due to its nutritional characteristics and economic importance, an aspect that demands the constant development of research aiming greater productivity. Thus, this study proposed an experimental plan, determining the estimates of plot size, sample size, and number of repetitions, with the purpose of increasing the precision and reliability of the results of the experiments with the carrot crop. Six uniformity trials were conducted, using three cultivars in two growing seasons (Season: 2019 and 2021).Each plant was considered a basic experimental unit and in each BEU, the variables shoot height, root length, shoot fresh mass, root fresh mass, and root diameter were measured. The size of the plot, sample, and the number of repetitions was estimated by the method of maximum curvature of the coefficient of variation. The results recommend that for experiments with the carrot crop, plots with twelve plants should be used. For a sampling of carrot plants in the plot, samples of eleven plants must be used in the direction of the row, considering a semi-amplitude of the confidence interval (D%) equal to 20% of the mean, with a confidence level of 95%. For a minimum significant difference in the Tukey test expressed as a percentage of the 50% mean, plots of twelve plants per crop row, with eight replicates, are recommended.

RESUMO: A cultura da cenoura se destaca no cenário mundial por suas características nutricionais e importância econômica, aspecto que demanda o constante desenvolvimento de pesquisas visando maior produtividade. Assim, o objetivo deste trabalho foi propor um plano experimental, determinando as estimativas de tamanho de parcela, tamanho de amostra e número de repetições, com a finalidade de aumentar a precisão e confiabilidade dos resultados dos experimentos com a cultura da cenoura. Foram conduzidos seis ensaios de uniformidade, utilizando três cultivares em duas safras (Safra: 2019 e 2021). Cada planta foi considerada uma unidade experimental básica e em cada BEU foram medidas as variáveis altura da parte aérea, comprimento da raiz, massa fresca da parte aérea, massa fresca da raiz e diâmetro da raiz. O tamanho da parcela, da amostra e o número de repetições foram estimados pelo método da máxima curvatura do coeficiente de variação. Os resultados recomendam que para experimentos com a cultura da cenoura sejam utilizadas parcelas com doze plantas. Para amostragem de plantas de cenoura na parcela, devem ser utilizadas amostras de onze plantas no sentido da linha, considerando uma semi-amplitude do intervalo de confiança (D%) igual a 20% da média, com nível de confiança de 95%. Para uma diferença mínima significativa no teste de Tukey expressa em porcentagem da média de 50%, recomendam-se parcelas de doze plantas por fileira de cultivo, com oito repetições.

https://doi.org/10.1590/0103-8478cr20230428

Evaluation of a Blood Reserve Protocol for Hip Fracture Surgery in the Elderly
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Miyasaki, Maurício Rodrigues

; Marques, Lucas de Quadros Miranda, Thiago dos Santos Ruiz, André Ruan Fernandez, Karen Barros Parron Biglia, Bruna

Revista Brasileira de Ortopedia

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2024, Volume 59 N. 4 Pages 617 - 621

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

Abstract Objective To identify the predictive factors for the need for transfusion during and after surgery to treat hip fractures in the elderly and to evaluate a protocol to guide the request for blood reserves for surgery. Methods The medical records of 172 elderly patients undergoing surgical treatment for proximal femoral fractures were collected. Data on sex, age, preoperative hemoglobin level, diagnosis, and type of surgery were tested for correlation with blood transfusion. In our sample, we determined the number of units of packed red blood cells reserved, the transfusion rate, and the cross-test:transfusion ratio. We made the same calculations in a hypothetical situation in which the request for blood reserves for our sample followed the criteria of a defined protocol. Results We found a correlation between the American Society of Anesthesiologists (ASA) classification and the occurrence of transfusions, and an inverse correlation between the hemoglobin level on admission and the number of bags transfused. A reserve of 328 units of packed red blood cells was requested for 167 surgeries. Had the proposed protocol been applied, 72 units would have been requested for 61 surgeries. Conclusion We found a correlation regarding the variables ASA classification and preoperative hemoglobin level and the occurrence of transfusion. Applying a proposed protocol to decide between requesting a reserve and only typing for elderly individuals undergoing surgical treatment for hip fracture proved suitable to reduce the number of packed red blood cell reserves.

Resumo Objetivo Identificar os fatores preditivos da necessidade de transfusão durante e após a cirurgia para o tratamento de fratura do quadril em idosos e avaliar um protocolo para orientar a solicitação de reserva de sangue para a cirurgia. Métodos Foram levantados os prontuários de 172 pacientes idosos submetidos a tratamento cirúrgico de fratura proximal do fêmur. Os dados relativos a sexo, idade, nível pré-operatório de hemoglobina, diagnóstico e tipo de cirurgia foram testados para a verificar a existência de correlação com a transfusão sanguínea. Determinamos o número de unidades reservadas de concentrado de hemácias, o índice de transfusão e a razão prova cruzada:transfusão em nossa casuística, e fizemos os mesmos cálculos em uma situação hipotética em que a solicitação de reserva de sangue para a nossa amostra seguisse os critérios de um protocolo definido. Resultados Encontramos correlação entre a classificação da American Society of Anesthesiologists (ASA) e a ocorrência de transfusão, e correlação inversa entre o nível de hemoglobina de entrada e o número de bolsas transfundidas. Foi solicitada reserva de 328 unidades de concentrado de hemácias para 167 cirurgias. Caso se tivesse aplicado o protocolo proposto, teriam sido solicitadas 72 unidades para 61 cirurgias. Conclusão Encontramos correlação entre as variáveis classificação da ASA e nível pré-operatório de hemoglobina e a ocorrência de transfusão. A aplicação de um protocolo proposto para decidir entre a solicitação de reserva e apenas a tipagem para indivíduos idosos que serão submetidos a tratamento cirúrgico de fratura do quadril mostrou-se adequada para diminuir o número de reservas de concentrado de hemácias.

https://doi.org/10.1055/s-0044-1785520

Mortality, hospitalizations, and persistence of symptoms in the outpatient setting of the first COVID-19 wave in Brazil: results of SARS-Brazil cohort study
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Fonseca, Henrique Andrade Rodrigues

; Pereira, Adriano Jose

; Nawa, Ricardo Kenji

; Sant’Anna, Viviane Aparecida Rodrigues

; Almeida, Tatiana Ferreira de

; Guimarães, Hélio Penna

; Tognon, Alexandre Pereira

; Marques, Lucas Miranda

; Silva, Lucas Santana Coelho da

; Bittencourt, Rafaela de Souza

; Gomes, Camila Pachêco

; Martins, Priscila de Aquino

; Oliveira, Aryadne Lyrio de

; Milan, Eveline Pipolo

; Dall’Orto, Frederico Toledo Campos

; Hoffman Filho, Conrado Roberto

; Almeida, Guacyra

; Hohmann, Fábio Barlem

; Moia, Diogo Duarte Fagundes

; Piano, Luciana Pereira Almeida

; Machado, Felipe Pinheiro

; Soares, Ronaldo Vicente Pereira

; Damiani, Lucas Petri

; Assis, Silvia Regina Lamas

; Amaro Junior, Edson

; Rizzo, Luiz Vicente

; Berwanger, Otávio

einstein (São Paulo)

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2024, Volume 22 elocation eAO0652

Abstract: En | Text: En | PDF: En

ABSTRACT Objective To evaluate deaths, hospitalizations, and persistence of symptoms in patients with COVID-19 after infection in an outpatient setting during the first COVID-19 wave in Brazil. Methods This prospective cohort was between April 2020 and February 2021. Hospitalized or non-hospitalized COVID-19 patients until five days after symptom onset were included. The outcomes measured were incidence of death, hospitalization, and persistence of more than two symptoms 60 days after discharge. Results Out of 1,198 patients enrolled in the study, 66.7% were hospitalized. A total of 289 patients died (1 [0.3%] non-hospitalized and 288 [36%] hospitalized). At 60 days, patients non-hospitalized during admission had more persistent symptoms (16.2%) compared to hospitalized (37.1%). The COVID-19 severity variables associated with the persistence of two or more symptoms were increased age (OR= 1.03; p=0.015), respiratory rate at hospital admission (OR= 1.11; p=0.005), length of hospital stay of more than 60 days (OR= 12.24; p=0.026), and need for intensive care unit admission (OR= 2.04; p=0.038). Conclusion COVID-19 survivors who were older, tachypneic at admission, had a hospital length of stay >60 days, and were admitted to the intensive care unit had more persistent symptoms than patients who did not require hospitalization in the early COVID-19 waves. ClinicalTrials.gov Identifier: NCT04479488.

https://doi.org/10.31744/einstein_journal/2024ao0652

CHEMICAL CONSTITUENTS AND ANTIBACTERIAL ACTIVITY OF THREE TYPES OF AMAZONIAN Melipona spp. GEOPROPOLIS
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Santos, Darlan C. dos

; David, Jorge M.

; Neto, Oscar C. S.

; Lima, Brenda O. Yatsuda, Regiane Moreira, Bruno O. Marques, Lucas M. Frazão, Richardson F.

Química Nova

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2024, Volume 47 N. 2 elocation e-20230096

Abstract: En | Text: En | PDF: En

This work describes the first chemical study on the metabolic profile of three geopropolis samples from Melipona fulva, M. compressipes, and M. paraensis collected in the Amazonian region. The samples were submitted to solvent extractions. The silylated hexane extracts were submitted to GC-MS analysis and tentatively identified mainly the presence of triterpenes, steroids, fatty acids, and alcohols. The chemical profile of M. fulva of and M. compressipes geopropolis are similar. However, cholesterol, triacontanol, and palmitic acid are the main compounds in M. fulva; in M. compressipes, palmitic acid, linoleic acid, and oleic acid are predominant. The chemical profile of the M. paraensis sample is entirely different once more than 60% of the extract comprises lupenone and triacontanol. The CHCl3 soluble fraction of the MeOH extract of the M. paraensis geopropolis was submitted to chromatographic techniques, and it afforded cycloartenol, 24-methylene-cycloartenol, lupeol, α- and β-amirins, and 7-O-methylaromadendrin. The MeOH extract of this sample presents antimicrobial activities against strains of Streptococcus mutans, S. sobrinus, and S. aureus (MIC of 15.6-62.5 µg mL−1 and MBC of 62.5-1000 µg mL−1). The M. fulva and M. compressipes geopropolis were not active in this test.

https://doi.org/10.21577/0100-4042.20230096

Liver cirrhosis with the development of transdiaphragmatic collateral circulation
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Marques, Lucas Gabriel Annechini

; Fonseca, Eduardo Kaiser Ururahy Nunes

einstein (São Paulo)

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2024, Volume 22 elocation eAI0564

Abstract: En | Text: En | PDF: En

https://doi.org/10.31744/einstein_journal/2024ai0564

Ureaplasma diversum-Ureaplasma sp. alone or concomitantly with Mycoplasma hyopneumoniae in pig lungs with and without pneumonia: A descriptive exploratory study in abattoirs
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Seitz, Jimena Vissio, Claudina Bertone, Judith Marques, Lucas Parada, Julián Carranza, Alicia Cola, Gabriel Di Ambrogi, Roberto Tamiozzo, Pablo

Revista argentina de microbiología

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oct 2023, Volume 55 N. 3 Pages 12 - 12

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

Resumen La presencia de Ureaplasma diversum se ha asociado a fallas reproductivas en el ganado bovino y se ha detectado en cerdos con y sin neumonía. Sin embargo, su participación en el complejo de enfermedades respiratorias porcinas (CERP) no es clara. Se llevó a cabo un estudio transversal en matadero, inspeccionando 280 pulmones de cerdo provenientes de ocho piaras. Todos los pulmones fueron inspeccionados, procesados y clasificados según el análisis histopatológico. También se colectaron muestras de lavado broncoalveolar (LBA) y se procesaron mediante PCR para la detección de U. diversum y Mycoplasma hyopneumoniae. Ureaplasma sp.-U. diversum y M. hyopneumoniae se detectaron en el 17,1% y en el 29,3% de los LBA analizados, respectivamente. La presencia concomitante de ambos microorganismos se detectó en el 12,5% de los pulmones inspeccionados. Ambos agentes se encontraron en pulmones con y sin neumonía. M. hyopneumoniae se detectó en el 31,8% de los pulmones con lesiones compatibles con neumonía enzoótica, mientras que Ureaplasma sp.-U. diversum se detectó en el 27,5% de los pulmones con estas lesiones. Este estudio exploratorio descriptivo proporciona información para futuros estudios experimentales y de campo tendentes a definir mejor el papel patógeno de este organismo dentro del CERP.

Abstract Occurrence of Ureaplasma diversum (U. diversum) has been associated with repro-ductive failures in cattle and detected in pigs with and without pneumonia. However, its rolein the porcine respiratory disease complex (PRDC) is unclear. A cross-sectional study was con-ducted in abattoirs, inspecting 280 pig lungs from eight herds. All the lungs were inspected,processed and classified according to the histopathological analysis. Moreover, bronchoalveolarlavage (BAL) specimens were collected and processed by PCR for detection of U. diversum andMycoplasma hyopneumoniae (M. hyopneumoniae). Ureaplasma sp.---U. diversum and M. hyop-neumoniae were detected in 17.1% and 29.3% of the analyzed BAL specimens, respectively. Theconcomitant presence of both microorganisms was detected in 12.5% of the inspected lungs.Both agents were found in lungs with and without pneumonia. M. hyopneumoniae was detectedin 31.8% of pig lungs with enzootic pneumonia-like lesions, while Ureaplasma sp.---U. diversumwas detected in 27.5% of lungs with these lesions. This descriptive exploratory study providesinformation for future experimental and field-based studies to better define the pathogenicrole of this organism within the PRDC.

https://doi.org/10.1016/j.ram.2023.02.003

10.

Prevalence of syphilis and sexual behavior and practices among adolescents MSM and TrTGW in a Brazilian multi-center cohort for daily use of PrEP
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Westin, Mateus Rodrigues

; Martinez, Yuppiel Franmil

; Silva, Ana Paula

; Greco, Marília

; Marques, Lucas Miranda

; Campos, Guilherme Barreto

; Alves, Matheus de Paula

; Mancuzzo, Alessandra

; Tupinambás, Unaí

; Greco, Dirceu Bartolomeu

Cadernos de Saúde Pública

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2023, Volume 39 Suppl. 1 elocation e00118721

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

Syphilis has reemerged as a serious public health problem in Brazil and worldwide, disproportionately affecting men who have sex with men (MSM) and travestis and transgender women (TrTGW). Studies on sexually transmitted infections (STI) in adolescents from these key populations are relatively scarce. This is a Brazilian multi-center, cross study with prevalence analysis, using as baseline the PrEP1519 cohort of sexually active MSM and TrTGW adolescents, recruited from April 2019 to December 2020. Analyses were made using the dimensions of vulnerability to STI/HIV and logistic regression models were conducted to estimate the odds ratios of the association between the predictor variables and positive treponemal test for syphilis at the moment of entry in the study. In total, 677 participants were analyzed; participants’ median age was 18.9 years (IQR: 18.1-19.5); 70.5% (477) self-declared as black; 70.5% (474), as homosexuals/gays; and 48 (7.1%), as trans women or travestis. The baseline prevalence of syphilis was 21.3%. In the final logistic regression model, higher chance of syphilis was associated with: self-reported episode of STI in the last 12 months (OR = 5.92; 95%CI: 3.74-9.37), sex worker (OR = 3.39; 95%CI: 1.32-8.78), and < 11 years of schooling (OR = 1.76; 95%CI: 1.13-2.74). The prevalence of syphilis among MSM/TrTGW adolescents aged from 15 to 19 years was alarming, much higher than the described for the general population within this age range and associated with vulnerability factors. This reinforces the urgent need to strengthen public health programs to debate about race, gender, sexuality, and prevention.

A sífilis reemergiu enquanto problema sério de saúde pública no Brasil e no mundo, afetando de maneira desproporcional homens que fazem sexo com homens (HSH), travestis e mulheres transgênero. São relativamente escassos os estudos sobre infecções sexualmente transmissíveis (IST) entre adolescentes pertencentes a essas populações-chave. O estudo transversal multicêntrico brasileiro analisou a prevalência de sífilis na linha de base da coorte PrEP15-19 de HSH, travestis e mulheres transgênero adolescentes, sexualmente ativos, recrutados entre abril de 2019 e dezembro de 2020. As análises foram realizadas com as dimensões de vulnerabilidade a ISTs/HIV, e modelos de regressão logística foram construídos para estimar as razões de chances da associação entre as variáveis preditoras e um teste treponêmico positivo para sífilis na entrada do estudo. Foram analisados 677 participantes. A idade mediana era 18,9 anos (IIQ: 18,1-19,5), 70,5% (477) se autoidentificaram como pretos, 70,5% (474) como homossexuais/gays e 48 (7,1%) como mulheres trans ou travestis. A prevalência de sífilis na linha de base era 21,3%. No modelo final de regressão logística, as seguintes variáveis estiveram associadas com chances maiores de sífilis: autorrelato de episódio de IST nos últimos 12 meses (OR = 5,92; IC95%: 3,74-9,37), profissional do sexo (OR = 3,39; IC95%: 1,32-8,78) e menos de 11 anos de escolaridade (OR = 1,76; IC95%: 1,13-2,74). A prevalência de sífilis entre HSH, travestis e mulheres transgênero adolescentes entre 15 e 19 anos de idade foi alarmante, muito acima da taxa relatada na população geral nesta faixa etária, e esteve associada a fatores de vulnerabilidade. Os achados reforçam a necessidade urgente de fortalecer os programas de saúde pública com a discussão sobre raça, gênero, sexualidade e prevenção.

La sífilis ha resurgido como un problema serio de salud pública en Brasil y en todo el mundo, afectando desproporcionadamente a hombres que tienen sexo con hombres (HSH), travestis y mujeres transgénero (TrTGW). Los estudios de las enfermedades trasmitidas sexualmente (ETS) en adolescentes de estas poblaciones clase son relativamente escasos. Se trata de un estudio transversal brasileño multicéntrico, con análisis de prevalencia de la base de referencia de la cohorte PrEP1519 de hombres activos sexualmente que mantienen sexo con hombres y adolescentes TrTGW, reclutados desde abril de 2019 a diciembre de 2020. Se hicieron análisis, usando las dimensiones de vulnerabilidad a las ETS/VIH, y se realizaron modelos de regresión logística para estimar las odds ratios de la asociación entre las variables predictoras y la prueba treponémica positiva para la sífilis al comenzar el estudio. Se analizaron a 677 participantes. La media de edad fue 18,9 años (IQR: 18,1-19,5), 70,5% (477) se autodeclararon como negros, 70,5% (474) como homosexuales/gays y 48 (7,1%) como mujeres trans o travestis. La base de referencia de prevalencia de sífilis fue 21,3%. En el modelo final de regresión logística, se asociaron con una posibilidad más alta de sífilis: un episodio autoinformado de ETS en los últimos 12 meses (OR = 5,92; IC95%: 3,74-9,37), trabajadores sexuales (OR = 3,39; IC95%: 1,32-8,78) y < 11 años de estudio (OR = 1,76; IC95%: 1,13-2,74). La prevalencia de sífilis entre adolescentes HSH/TrTGW con edades de 15 a 19 años fue alarmante, mucho más que lo descrito para la población general en este rango de edad y asociado con factores de vulnerabilidad. Esto refuerza la urgente necesidad de fortalecer los programas de salud pública, discutiendo cuestiones de raza, género, sexualidad y prevención.

https://doi.org/10.1590/0102-311xen118721

11.

Prevalence of syphilis and sexual behavior and practices among adolescents MSM and TrTGW in a Brazilian multi-center cohort for daily use of PrEP
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Westin, Mateus Rodrigues

; Martinez, Yuppiel Franmil

; Silva, Ana Paula

; Greco, Marília

; Marques, Lucas Miranda

; Campos, Guilherme Barreto

; Alves, Matheus de Paula

; Mancuzzo, Alessandra

; Tupinambás, Unaí

; Greco, Dirceu Bartolomeu

Cadernos de Saúde Pública

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2023, Volume 39 Suppl. 1 elocation e00118721

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

https://doi.org/10.1590/0102-311xen118721

12.

Repeatability and number of measurements for productive variables in vegetable crops experiments
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Lucio, Alessandro Dal’Col

; Lambrecht, Darlei M

; Diel, Maria Inês

; Tischler, André Luís

; Tartaglia, Francieli de L

; Zemolin, João Alberto

; Marques, Lucas E

Horticultura Brasileira

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sep 2022, Volume 40 N. 3 Pages 247 - 254

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

RESUMO Uma das formas de otimizar a avaliação do experimento e obter elevada precisão dos resultados é com o uso de quantidade adequada de mensurações para cada variável observada no experimento. Neste sentido, o objetivo deste estudo foi estimar coeficiente de repetibilidade e o número de mensurações necessárias para análise de caracteres de produção de abobrinha, pepino, pimenta biquinho e ervilha. Os experimentos foram realizados no Departamento de Fitotecnia da Universidade Federal de Santa Maria. Para abobrinha e pepino avaliaram-se as variáveis número, massa e comprimento de frutos, maior e menor diâmetro dos frutos. Para ervilha avaliou-se o número, massa e comprimento de vagens, número e massa de grãos, e para pimenta biquinho avaliou-se número, massa, maior diâmetro e o comprimento dos frutos. O coeficiente de repetibilidade (r) foi estimado pelo método dos componentes principais usando a matriz de correlação e a matriz de covariâncias. Determinou-se ainda, o número de mensurações para cada variável com base nos coeficientes de determinação de 0.80, 0.85, 0.90, 0.95 e 1.00. O coeficiente de repetibilidade estimado obteve as maiores estimativas com o uso da matriz de covariâncias, variando de 0,67 a 0,84 para abobrinha, de 0,66 a 0,97 para pepino, de 0,47 a 0,70 para ervilha e de 0,57 a 0,71 para pimenta biquinho. Para avaliar a massa de frutos em abobrinha, pepino, ervilha e pimenta biquinho, são necessárias, respectivamente 7, 4, 8 e 8 mensurações para um coeficiente de determinação de 95%.

ABSTRACT One of the ways to optimize the evaluation of the experiment and obtain high precision of the results is with the use of an adequate number of measurements for each variable observed in the experiment. In this sense, the objective of this study was to estimate the repeatability coefficient and the number of measurements necessary for the analysis of characters of production of zucchini, cucumber, pout pepper and pea. In the experiments carried out with zucchini and cucumber the variables number of fruits, fruit mass, fruit length, largest fruit diameter and smallest fruit diameter were evaluated. For pea the number, length and mass of pods, number and mass of grains per pod and for pout pepper number and mass of fruits, largest fruit diameter and length were evaluated. The repeatability coefficient (r) was estimated by the principal component method using the correlation matrix and the covariance matrix. The number of measurements for each variable was also determined based on the coefficients of determination of 0.80, 0.85, 0.90, 0.95 and 1.00. The estimated repeatability coefficient obtained the highest estimates using the covariance matrix, ranging from 0.67 to 0.84 for zucchini, from 0.66 to 0.97 for cucumber, from 0.47 to 0.70 for pea and from 0.57 to 0.71 for pout pepper. To evaluate the fruit mass in zucchini, cucumber, pea and pout pepper, are exactly, respectively, 7, 4, 8 and 8 measurements for a coefficient of determination of 95%.

https://doi.org/10.1590/s0102-0536-20220301

13.

Causes of death and organs condemnation at slaughter of sheep in a feedlot system in Southern Rio Grande do Sul
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Ribeiro, Luiza S.

; Scheid, Haide V.

; Venancio, Fabiano R.

; Marques, Lucas S.

; Schild, Ana Lucia

Pesquisa Veterinária Brasileira

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2022, Volume 42 elocation e07159

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

RESUMO: No Rio Grande do Sul está localizado o segundo maior rebanho de ovinos do Brasil e a demanda pelo consumo de carne desta espécie animal tem aumentado nos últimos anos. As criações em sistema intensivo têm tido um avanço considerável nesta região com o objetivo de aumentar a produção de ovinos para o abate e obter um lote uniforme, garantindo melhor qualidade da carne aos consumidores. Por outro lado, a aglomeração e o estresse que os animais passam pode levar a ocorrência de enfermidades e trazer prejuízos econômicos aos produtores. Os objetivos deste trabalho foram determinar as principais causas de morte que afetaram ovinos em um sistema intensivo de criação, estabelecer formas de controle e profilaxia das enfermidades diagnosticadas, bem como estimar as perdas econômicas delas decorrentes. Objetivou-se, também, determinar as causas de condenação de órgãos ou carcaças nos frigoríficos aos quais os ovinos eram enviados para o abate, para estimar as perdas neste setor produtivo. Para isso, foi realizado um trabalho de acompanhamento em um estabelecimento localizado no município de São Lourenço do Sul, Rio Grande do Sul, no período de outubro de 2020 até setembro de 2021. Os ovinos mortos eram necropsiados e o diagnóstico realizado com base nos sinais clínicos, patologia e bacteriologia. As principais enfermidades diagnosticadas foram as parasitoses (15,4%) e as pneumonias (13%), seguidas de listeriose (9,6%). As lesões que levaram ao maior número de condenações foram hidatidose (29,9%), congestão renal (26,2%) e isquemia renal (25,8%). A estimativa de perdas econômicas no ano de 2021 foi de R$17.480,00, enquanto as perdas por morte de ovinos nos anos 2019 e 2020 foram de aproximadamente R$50.000,00 e R$54.000,00, respectivamente. Ficou evidenciada a importância da assistência técnica para a redução dessas perdas por mortalidade de ovinos criados em sistema intensivo. Observou-se, ainda, que os rins foram os órgãos mais frequentemente descartados para o consumo e que o valor de descarte como resíduo era oito vezes menor do que o valor dos rins aptos para o consumo.

ABSTRACT: In Brazil the second largest sheep herd is in Rio Grande do Sul and in recent years the demand for meat consumption of this specie has increased. Intensive farming systems have made considerable progress in this region with the objective of increasing the production of sheep for slaughter and obtaining a uniform batch to ensure better quality of sheep meat to consumers. However, the agglomeration and stress that animals go through can lead to the occurrence of illnesses and economic loss to producers. The objectives of this paper were to determine the main causes of death that affected sheep in a feedlot system, to establish forms of control and prophylaxis of diagnosed illnesses, and to estimate the economic losses resulting from them. The objective was also to determine the causes of condemnation of organs or carcasses in the slaughterhouses that processed the sheep were sent, and to estimate the losses in this productive sector. For this, a follow-up work was carried out in an establishment located in the city of São Lourenço do Sul, Rio Grande do Sul, from October 2020 to September 2021. The dead sheep at the feedlot were necropsied, and the diagnosis was made based on clinical signs, pathology, and bacteriology. The main diseases diagnosed were parasitic enteritis (15.4%), pneumonia (13%), and listeriosis (9.6%). In the slaughterhouse study, the lesions that led to the highest number of condemnations were hydatidosis (29.9%), renal congestion (26.2%), and renal ischemia (25.8%). The economic losses estimated for the death of sheep in 2021 was R$17,480.00, significantly lower than the approximate losses in 2019 and 2020 of R$50,000.00 and R$54,000.00, respectively. This highlights the importance of technical assistance to reduce these losses due to mortality in sheep raised in a feedlot system. It was also observed the kidneys of the sheep were the organs most frequently selected for condemnation. The economic value of the kidneys sold as disposed waste was eight time lower than that the value of kidneys suitable for consumption.

https://doi.org/10.1590/1678-5150-pvb-7159

14.

Visualização dos campos elétrico e magnético em guias de ondas retangulares
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Marques, Lucas

; Kubrusly, Alan C.

Revista Brasileira de Ensino de Física

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2022, Volume 44 elocation e20220139

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

Guias de ondas são dispositivos que permitem a propagação de ondas eletromagnéticas direcionadas. As ondas guiadas ocorrem quando as equações de onda são atendidas respeitando as condições de contorno no guia. Além de sua aplicação prática, o estudo dos campos elétrico e magnético é altamente relevante no ensino superior, em disciplinas tais como eletromagnetismo e dispositivos de microondas. Neste artigo, é apresentado e disponibilizado um código numérico para a visualização animada dos campos eletromagnéticos em guias de onda retangulares. Para isso, são revisadas as equações de propagação em guias de onda para modos TE e TM. O referido código, em Matlab®, possibilita ao usuário a escolha das dimensões do guia, do tipo de onda, do modo, da vista e da frequência de operação. O artigo apresenta ainda um exemplo computado para um guia retangular comercial do tipo WR-90, através da exemplificação dos modos TE 10 e TM 21. O presente programa computacional é um objeto educacional de código aberto de alta relevância ao aprendizado de eletromagnetismo.

Waveguides are devices that allow the propagation of directional electric magnetic waves. Guided waves occur when the wave equation is satisfied considering the boundary conditions in the waveguide. Besides its practical issue, studying electric and magnetic fields is highly relevant in electromagnetism and microwave device courses. In this article, we present and provide a numeric code for an animated visualization of the electromagnetic waves in a rectangular wave guide. For this, the waveguide propagation equations for TE and TM mode are reviewed. This code, in Matlab®, allows the user to select wave guide dimensions, wave and mode type, view type and operation frequency. An example for the TE 10 and TM 21 wave modes propagating through the commercial WR-90 waveguide is presented. This program is a highly relevant open-source educational object when it comes to learning electromagnetism.

https://doi.org/10.1590/1806-9126-rbef-2022-0139

15.

New insights on the influence of the quality of tomato seedlings on production of fruits cultivated in substracts
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Diel, Maria Inês

; Lúcio, Alessandro Dal’Col

; Tartaglia, Francieli de Lima

; Tischler, André Luís

; Lambrecht, Darlei Michalski

; Zemolin, João Alberto

; Marques, Lucas Encarnação

Ciência Rural

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2022, Volume 52 N. 12 elocation e20210428

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

RESUMO: O objetivo deste trabalho foi avaliar as relações entre os caracteres biométricos de mudas de tomate com os caracteres de produção obtidos ao final do ciclo da cultura, para determinar como a qualidade das mudas interfere na produtividade do tomate. O experimento foi conduzido em duas épocas de cultivo, em delineamento inteiramente casualizado, com quatro repetições e a unidade experimental composta por cinco plantas. Os tratamentos foram constituídos por mudas com diferentes idades, diferenciadas pelos dias após a semeadura (DAS): (15, 20, 25, 30, 35 e 40 DAS). Após cada avaliação das mudas, eram transplantadas para o local de produção definitivo, sendo avaliadas até o final do ciclo. Avaliaram-se os caracteres biométricos das mudas e os caracteres da produção de frutos. Análise de correlação de Pearson e componentes principais (PCA) foram realizados para determinar as relações entre os caracteres, análise de trilha para determinar os efeitos diretos e indiretos e análise de correlações canônicas entre os grupos de caracteres. Em todas as análises realizadas, foi identificada correlação fraca entre os caracteres biométricos das mudas (que avaliam a qualidade) com os caracteres da produção de frutos de tomate em cultivo em substrato.

ABSTRACT: This study evaluated the relationships between the biometric characters of tomato seedlings with the production characters obtained at the end of the crop cycle, to determine how the quality of seedlings interferes with tomato productivity. An experiment was carried out in two growing seasons, in a completely randomized design, with four replications and the experimental unit consisting of five plants. The treatments consisted of seedlings with different ages, differentiated by the days after sowing (DAS): (15, 20, 25, 30, 35, and 40 DAS). After each evaluation of the seedlings, they were transplanted to the definitive production site, being evaluated until the end of the cycle. Biometric characters of seedlings and characters of fruit production were evaluated. Pearson correlation analysis and principal components (PCA) were performed to determine the relationships between the characters, path analysis to determine the direct and indirect effects, and analysis of canonical correlations between the groups of characters. In all analyses performed, weak correlation between the biometric characters of the seedlings (which evaluate the quality) with the characters of tomato fruit production in substrate cultivation was identified.

https://doi.org/10.1590/0103-8478cr20210428

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