Abstract We investigated the Biogran on bone repair and metabolism at several time-intervals upon grafting into rat tibia artificial defects. The biomaterial was thoroughly characterized in vitro, and its dissolution behavior upon immersion was assessed in simulated body fluid (SBF) solution for 1, 3, 7, 14, and 30 days. Biogran was also assessed by in vitro hydroxyapatite formation in SBF solution, which is a marker for bioactive behavior. In vivo, distal and proximal bone defects were performed in the Wistar rat's right tibia and filled according to the experimental groups: I) negative control, no filling; II) positive control, 10 mg of autogenous bone; and III) 10 mg of Biogran. Animals were euthanized at 1, 2, 3, 4, 7, and 10 weeks. Bone neoformation was analyzed using histomorphometry (proximal defect), and local levels of bone morphogenetic protein 2 (BMP-2) were measured using the ELISA assay (distal defect). In vitro, the Biogran sample showed a fast dissolution rate within the first 7 days, parallel to the formation of the hydroxyapatite layer. In vivo, the sample was progressively resorbed at a higher rate within the first month until it became almost absent at week 10th. The sample presented similar or higher bone neoformation concerning the autogenous bone. BMP-2 levels were sustained in the Biogran group (around 200 pg/mg) and detected until the last experimental time with a significant difference compared with the controls. Results suggest Biogran is a candidate for hard tissue engineering even in highly active bone remodeling sites. timeintervals intervals (SBF 1 3 14 days vivo rats s groups I control filling II III 4 weeks defect, defect , defect) BMP2 BMP (BMP-2 defect. . layer 10th th BMP- around 20 pg/mg pgmg pg controls sites (BMP- (BMP

ABSTRACT present study aimed to determine the effects of different light restriction levels (shading levels) on soybean genetic parameters using a Bayesian multi-trait model (MTM) and select high-yielding soybean cultivars. Eighteen commercial soybean cultivars bred in a soybean breeding program were evaluated over two agricultural seasons. Three shading levels were used over two agricultural crop seasons, giving six treatments (light restriction × crop season). The experiments were arranged in a randomized complete block design with six treatments replicated thrice. The genetic values and parameters were estimated using a Monte Carlo Markov Chain algorithm. Broad-sense heritability range from 0.2093 to 0.7153. The lowest genotypic variance estimate was observed at the 45 % photosynthetically active radiation level in the 2019/2020 crop season year compared with that of other shading levels. Furthermore, a 40 % selection intensity had the highest soybean yield under different shading levels. The Bayesian MTM combined with the factor analysis and genotype-ideotype distance method can be used to evaluate and select soybean genotypes considering different shading levels. The soybean cultivars 8579RSF, NS8338, NS7901, NS7667, RK8115, and 8473RSF had higher genetic potential than other cultivars under different shading levels. multitrait multi trait (MTM highyielding high yielding seasons season. . season) thrice algorithm Broadsense Broad sense 02093 0 2093 0.209 07153 7153 0.7153 4 20192020 2019 2020 2019/202 Furthermore genotypeideotype genotype ideotype 8579RSF RSF NS8338 NS NS7901 NS7667 RK8115 RK 0209 209 0.20 0715 715 0.715 2019202 201 202 2019/20 NS833 NS790 NS766 RK811 020 20 0.2 071 71 0.71 201920 2019/2 NS83 NS79 NS76 RK81 02 2 0. 07 7 0.7 20192 2019/ NS8 NS7 RK8

Abstract Objective To analyze the death of Brazilian pregnant and postpartum women due to COVID-19 or unspecific cause. Methods This is retrospective, descriptive-exploratory, population-based study carried out with the Sistema de Informação de Vigilância Epidemiológica da Gripe (SIVEP-Gripe) database, with pregnant and postpartum women of reproductive age who died from confirmed COVID-19 between 2020 and 2021. The chosen variables were: age, gestational period, type and number of comorbidities, skin color, using the statistical software R Foundation for Statistical Computing Platform, version 4.0.3 and Statistical Package for Social Science, version 29.0 for analysis. Results A total of 19,333 cases of pregnant and postpartum women aged between 10 and 55 years diagnosed with SARS were identified, whether due to confirmed COVID-19 or unspecific causes. Of these, 1,279 died, these cases were classified into two groups according to the cause of death: deaths from COVID-19 (n= 1,026) and deaths from SARS of unspecific cause (n= 253). Conclusion The risk of death increased among black and brown women, in the postpartum period and with the presence of comorbidities, mainly diabetes, cardiovascular diseases and obesity. The data presented here draw attention to the number of deaths from SARS, especially among sociodemographic profiles, precarious access to health, such as the black population. In addition, limitations in adequate access to health care are reinforced by even lower rates of ICU admissions among women who died from SARS of an unspecified cause. COVID19 COVID 19 COVID-1 retrospective descriptiveexploratory, descriptiveexploratory descriptive exploratory, exploratory descriptive-exploratory populationbased population based SIVEPGripe SIVEP (SIVEP-Gripe database 202 2021 comorbidities color Platform 403 4 0 3 4.0. Science 290 29 29. analysis 19333 333 19,33 1 5 identified causes 1279 279 1,27 n= n (n 1,026 1026 026 253. 253 . 253) diabetes obesity profiles addition COVID1 COVID- 20 40 4.0 2 1933 33 19,3 127 27 1,2 1,02 102 02 25 4. 193 19, 12 1, 1,0

RESUMO Objetivo: Analisar as experiências e significados atribuídos por homens trans ao processo de amamentação à luz da Teoria das Representações Sociais. Método: Estudo qualitativo, descritivo e exploratório, realizado em âmbito nacional, com uma amostra intencional de cinco homens trans que experienciaram a amamentação e com idade igual ou superior aos 18 anos. Aplicou-se o roteiro de entrevista semiestruturado como instrumento de coleta de dados, utilizando a plataforma Google Meet®, de setembro a outubro de 2021. Os dados foram descritos, integrando-os à análise de conteúdo, resultando em duas categorias analíticas. Resultados: Os homens trans parturientes se dispuseram a amamentar sua criança, ancorando suas representações sobre a amamentação na ideia de que se trata de um fenômeno desempenhado, exclusivamente, por mulheres e reconhecendo, também, esse fenômeno como um acontecimento que constitui sua masculinidade, além de descrevê-la como uma experiência pedagógica e de aprendizado com o objetivo de garantir o desenvolvimento saudável da criança. Conclusões: Este estudo poderá promover reflexões para a mudança da prática em enfermagem e saúde nos diversos cenários do cuidado, especialmente durante a assistência pré-natal, ao parto e ao puerpério. Objetivo Sociais Método qualitativo exploratório nacional 1 anos Aplicouse Aplicou Meet Meet® 2021 descritos integrandoos integrando os conteúdo analíticas Resultados criança desempenhado exclusivamente reconhecendo também masculinidade descrevêla descrevê la Conclusões cuidado prénatal, prénatal pré natal, natal pré-natal puerpério 202 20 2

ABSTRACT Objective: To analyze the experiences and meanings attributed by trans men to the breastfeeding process in light of the Theory of Social Representations. Method: A qualitative, descriptive and exploratory study, carried out nationwide, with an intentional sample of five trans men who experienced breastfeeding and aged 18 or over. A semi-structured interview script was applied as a data collection instrument, using the Google Meet® platform, from September to October 2021. The data were described, integrating them with content analysis, resulting in two analytical categories. Results: Trans men in labor were willing to breastfeed their child, anchoring their representations of breastfeeding in the idea that it is a phenomenon performed exclusively by women and also recognizing this phenomenon as an event that constitutes their masculinity, in addition to describing it as a pedagogical and learning experience with the objective of guaranteeing the healthy development of children. Conclusions: This study may promote reflections for changing nursing and health practices in different care settings, especially during prenatal care, childbirth and the postpartum period. Objective Representations Method qualitative nationwide 1 over semistructured semi structured instrument Meet platform 2021 described analysis categories Results child masculinity children Conclusions settings period 202 20 2

RESUMEN Objetivo: Analizar las experiencias y significados atribuidos por hombres trans al proceso de lactancia a la luz de la Teoría de las Representaciones Sociales. Método: Estudio cualitativo, descriptivo y exploratorio, realizado a nivel nacional, con una muestra intencional de cinco hombres trans que han experimentado la lactancia y tienen 18 años o más. Se aplicó como instrumento de recolección de datos la guía de entrevista semiestructurada, utilizando la plataforma Google Meet®, de septiembre a octubre de 2021. Se describieron los datos integrándolos con el análisis de contenido, dando como resultado dos categorías analíticas. Resultados: Los hombres trans en trabajo de parto estaban dispuestos a amamantar a su hijo, anclando sus representaciones sobre la lactancia en la idea de que es un fenómeno realizado exclusivamente por mujeres y también reconocer este fenómeno como un acontecimiento que constituye su masculinidad, además de describirlo como una experiencia pedagógica y de aprendizaje con el objetivo de asegurar el sano desarrollo del niño. Conclusiones: Este estudio puede promover reflexiones sobre el cambio de las prácticas de enfermería y salud en diferentes entornos de atención, especialmente durante el prenatal, el parto y el posparto. Objetivo Sociales Método cualitativo exploratorio nacional 1 más semiestructurada Meet Meet® 2021 contenido analíticas Resultados hijo masculinidad niño Conclusiones atención prenatal posparto 202 20 2

RESUMO No contexto de um programa de restauração florestal em área de mineração na Amazônia oriental brasileira, o objetivo deste estudo foi identificar a espécie de abiu-seringarana (Ecclinusa sp.) em remanescentes florestais adjacentes à mina. Como a identificação de Ecclinusa com base apenas na morfologia externa é difícil, ela foi corroborada por análise molecular. Amostras de folhas de três árvores foram comparadas com Ecclinusa no acervo do herbário da Embrapa. O DNA extraído seguiu um protocolo CTAB modificado, e o sequenciamento foi com marcadores ITS. Tanto a identificação morfológica quanto o alinhamento das sequências obtidas com material do GenBank indicaram que os indivíduos pertencem a Ecclinusa guianensis, que é confirmada como a espécie que ocorre na área de mineração. brasileira abiuseringarana abiu seringarana sp. sp mina difícil molecular Embrapa modificado ITS guianensis

ABSTRACT In the context of a forest restoration program in a mining area in the eastern Brazilian Amazon, the objective of this study was to identify the species of trees of abiu-seringarana (Ecclinusa sp.) in forest remnants adjacent to the mine. As the identification of Ecclinusa based on external morphology alone is difficult, it was corroborated by molecular analysis. Leaf samples of three trees were compared with Ecclinusa in the Embrapa herbarium collection. DNA was extracted with a CTAB modified protocol for sequencing with ITS markers. Both the morphological identification and the alignment of the obtained sequences with material in GenBank indicated that the individuals belong to Ecclinusa guianensis, which is confirmed as the species occurring in the mining area. Amazon abiuseringarana abiu seringarana sp. sp mine difficult analysis collection markers guianensis

Resumo Objetivo: caracterizar as práticas sexuais dos adolescentes e sua associação com variáveis sociodemográficas, fontes de informações e hábitos comportamentais. Método: estudo descritivo observacional, transversal, conduzido com 85 adolescentes de escolas públicas de ensino fundamental e médio de um município do estado de São Paulo. Os dados foram coletados por meio de um questionário estruturado, autoaplicável e anônimo. A análise estatística realizada foi o teste do χ2 e teste de Fisher. Resultados: a iniciação da vida sexual foi de 21,2% através do sexo oral, com predominância o sexo feminino (94,4%), cor autorreferida parda (55,0%). A prática do sexo vaginal foi relatada em 31,8%, com idade média de iniciação aos 14,5 anos. O sexo feminino foi predominante (77,0%), com cor autorreferida parda (40,0%). A prática de sexo anal foi detectada em 7,1%, com média de idade aos 14,4 anos, prevalente no sexo feminino (83,3%), com cor autorreferida preta (50,0%). Ocorreu a associação entre o uso de álcool, drogas e tabaco com as práticas sexuais (p<0,05). Conclusão: detectou-se uma diversidade de práticas sexuais, associadas ao uso de substâncias, enfatizando a importância do papel do enfermeiro no planejamento e realização de intervenções de educação em saúde com os adolescentes e famílias.

Abstract Objective: to characterize adolescents’ sexual practices and their association with sociodemographic variables, sources of information and behavioral habits. Method: a descriptive, observational, cross-sectional study conducted with 85 adolescents from public elementary and high schools in a city in the state of São Paulo. Data were collected through a structured, self-administered and anonymous questionnaire. Statistical analysis was performed using the χ2 test and Fisher’s test. Results: 21.2% had started their sexual life through oral sex, with a predominance of females (94.4%), self-reported brown color (55.0%). The practice of vaginal sex was reported in 31.8%, with a mean age of initiation at 14.5 years. The female sex was predominant (77.0%), with a self-reported brown color (40.0%). The practice of anal sex was detected in 7.1%, with a mean age of 14.4 years, prevalent in females (83.3%), with a self-reported black color (50.0%). There was an association of alcohol, drugs and tobacco use with sexual practices (p<0.05). Conclusion: a diversity of sexual practices associated with substance use was detected, emphasizing the importance of the nurse’s role in planning and carrying out health education interventions with adolescents and families.

Resumen Objetivo: caracterizar las relaciones sexuales de los adolescentes y su relación con las variables sociodemográficas, fuentes de información y hábitos de comportamiento. Método: estudio descriptivo, observacional y transversal, realizado con 85 adolescentes de escuelas primarias y secundarias públicas de un municipio del estado de São Paulo. Los datos fueron recolectados a través de un cuestionario estructurado, autoadministrado y anónimo. El análisis estadístico se realizó mediante la prueba de χ2 y la prueba de Fisher. Resultados: el 21,2 % inició su vida sexual a través del sexo oral, con predominio del sexo femenino (94,4 %), y siendo autodeclarados pardos (55,0 %). Las relaciones sexuales con penetración vaginal fueron reportada en 31,8% y con una edad media de inicio de 14,5 años. Predominó el sexo femenino (77,0%) y siendo autodeclaradas pardas (40,0%). La práctica de sexo anal se detectó en el 7,1%, con una edad media de 14,4 años, prevaleciendo el sexo femenino (83,3%) y siendo autodeclarados negros (50,0%). Hubo correspondencia entre el uso de alcohol, drogas y tabaco con las relaciones sexuales (p<0,05). Conclusión: se detectó una diversidad de relaciones sexuales asociadas al uso de sustancias psicoactivas, destacando la importancia del papel del enfermero en la planificación y realización de reuniones conjuntas sobre educación sanitaria con adolescentes y familias.

Abstract High chromium cast iron (HCCI) with levels around 26% Cr - 2.9% C according to ASTM A 532 IIIA is widely used in systems where high abrasive wear resistance is required. To evaluate the niobium influence, HCCI with 0.5% Nb and 1% Nb additions were melted, besides one without niobium addition of for comparison. For characterization, X-ray diffractometry, scanning electron microscopy (SEM), Vickers microhardness tests, Rockwell C hardness, carbide quantifications, quantification of the retained austenite by Mössbauer spectroscopy, and rubber wheel abrasion test according to procedure A of ASTM G-65 were performed. The results indicated a reduction in the average size, average perimeter, and carbides volumetric fraction (CVF) due to the addition of niobium, also changing the microstructure of the HCCI from eutectic to hypoeutectic. In some regions, NbC0.75 carbides formed a coating around M7C3 carbides. The 0.5% Nb alloy showed the best performance in the rubber wheel abrasive wear test, with a 37% average volume loss reduction as compared to the sample without niobium addition with a 130N load and 34% with a 45N load. The 0.5% Nb alloy also had the highest content of retained austenite among the investigated alloys.

Abstract This work aims to evaluate the application of ultrasound and marinate with extract of acerola (Malpighia emarginata) residue on the tenderness and lipid oxidation of the meat pork. Samples of loin (Longissimus dorsi) containing approximately 90 g, 10 cm long, 5 cm wide, and 2 cm high were extracted from the pig carcass. The samples were coded and randomly allocated under a factorial scheme 2 (with and without antioxidant extract) x 3 (ultrasonic bath times 0, 5, and 10 minutes); each treatment had four replicates. The final extract volume was adjusted with distilled water, ensuring 200 mg of gallic acid equivalents per kilo of meat. Then, the samples were placed in the ultrasonic bath at a fixed frequency of 170 W, 35 kHz. During the ultrasound application, the bath temperature was maintained at 10 °C with ice/ice water addition when necessary. The acerola´s extract showed a significant effect (P < 0.05) on the meat Cohesiveness and to a lesser extent before rupture. With the modification of the microstructure in the meat, there was a decrease in elasticity. The application of ultrasound to meat (170 W, 35 kHz) in times (5 and 10 minutes) combined with the marinating in a natural antioxidant acerolas residue extract improves the meat's quality characteristics, decreasing the hardness and chewiness.

ABSTRACT. Chickpea is a legume with nutrient-rich grains important for human feeding. Tobacco budworm, Chloridea virescens (Lepidoptera: Noctuidae), is one of the most major pests of chickpea (Cicer arietinum) in Brazil. This pest damages leaves, flowers, pods, and grains. Plant resistance to insects is an important tactic of pest management, which usually facilitates and reduce costs of implementing an Integrated Pest Management for farmers. Thus, this study aimed to evaluate the resistance in chickpea cultivars to C. virescens. Six chickpea cultivars were evaluated for antixenosis, initial antibiotic parameters, and behavior under field conditions. The cultivars BRS Kalifa and BRS Cícero were less attractive in a free-choice test, while Jamu 96 and BRS Kalifa were less attractive in a no-choice test. BRS Kalifa and BRS Toro leaves had a higher trichome density. Jamu 96 and BRS Toro had higher contents of oxalic and malic acids. C. virescens larvae in BRS Cícero, BRS Toro, and BRS Kalifa showed the lowest weights. Jamu 96 pods were the least damaged, and BRS Aleppo and Jamu 96 had the highest yields. The chickpea cultivars Jamu 96 and BRS Aleppo, which had resistance levels and mechanisms, can be used in integrated pest management programs to control C. virescens.

Abstract INTRODUCTION: This epidemiological household survey aimed to estimate the prevalence of the current and past SARS-CoV-2 infections in Ribeirão Preto, a municipality of southeast Brazil. METHODS: The survey was conducted in two phases using a clustered sampling scheme. The first phase spanned May 1-3 and involved 709 participants. The second phase spanned June 11-14, 2020, and involved 646 participants. RESULTS: During the first phase, RT-PCR performed on nasopharyngeal swabs was positive at 0.14%. The serological tests were positive in 1.27% of the patients during the first phase and 2.79% during the second phase. People living in households with more than five members had a prevalence of 10.83% (95%CI: 1.58-74.27) higher than those living alone or with someone other. Considering the proportion of the positive serological test results with sex and age adjustments, approximately 2.37% (95%CI: 1.32-3.42) of the population had been cumulatively infected by mid-June 2020, which is equivalent to 16,670 people (95%CI: 9,267-24,074). Considering that 68 deaths from the disease in the residents of the city had been confirmed as at the date of the second phase of the survey, the infection fatality rate was estimated to be 0.41% (95%CI: 0.28-0.73). Our results suggest that approximately 88% of the cases of SARS-CoV-2 infection at the time of the survey were not reported to the local epidemiological surveillance service. CONCLUSIONS: The findings of this study provide in-depth knowledge of the COVID-19 pandemic in Brazil and are helpful for the preventive and decision-making policies of public managers.

Abstract Conyza species are important weeds in global agriculture, especially due to their capacity to evolve resistance to multiple herbicide mechanisms of action. We aimed to evaluate the frequency and distribution of resistance to glyphosate and chlorimuron-ethyl in Conyza spp. populations from Brazil. Seed samples were collected from grain production areas across nine Brazilian states over five consecutive years (2014 to 2018). Prior to resistance monitoring trials, dose-response assays were conducted to determine a single dose of glyphosate or chlorimuron-ethyl to discriminate resistant and susceptible populations. Resistance monitoring based on plant responses to the application of discriminatory doses of glyphosate (960 g ha-1) or chlorimuron-ethyl (20 g ha-1). Populations were classified as resistant, moderately resistant, or susceptible to either herbicide. While glyphosate resistance was highly frequent (71.2%) in all the five years, chlorimuron-ethyl resistant populations occurred at 39.8% of the total. The frequency of multiple resistance to both herbicides (35.3%) was proportional to the occurrence of chlorimuron-ethyl resistance (39.6%). Resistance to glyphosate and to chlorimuron-ethyl were found across all states evaluated.

This paper presents an ongoing investigation that analyzes life experiences, processes and systemic impacts of the COVID-19 pandemic and examines the measures and actions to prevent, contain and respond to it. The study is focusing the inequalities on life experiences of the pandemic in populations that live in fourteen vulnerable territories of the Metropolitan Area of São Paulo and the city of Santos (Brazil). The group of researchers is composed of people who live in those territories and students and professors of the São Paulo Federal University.The research design focuses on comprehending the experience of the pandemic in its complexity, through an interdisciplinary production of scientific knowledge that is socially referenced and committed to the participation of the populations studied. The field research in each territory, which counts with the participation of local organizations, is producing a critical reflection on the experience of the pandemic and giving visibility to the centrality of social networks weaved by local actors. This path is allowing us to understand the ways of producing life in territories stressed by inequality and to recognize their challenges. To go through this complex process transversed by the pandemic is the challenge and the richness of this study.

O objetivo geral do artigo é compartilhar a investigação em curso que se propõe a analisar as vivências, os processos e os impactos sistêmicos da pandemia de COVID-19 e das medidas e ações realizadas para a sua prevenção, contenção e enfrentamento. O estudo considera as desigualdades nas vivências da pandemia em populações de diferentes territórios vulneráveis. São 14 territórios da Região Metropolitana de São Paulo e da Baixada Santista. O delineamento da pesquisa busca qualificar o olhar para a vivência da pandemia em sua complexidade, via uma produção interdisciplinar do conhecimento, realizada junto com as populações estudadas.&nbsp; O coletivo de pesquisadores é formado por moradores dos territórios, estudantes e pesquisadores ligados à universidade. Unifica este coletivo o compromisso de produzir conhecimentos científicos socialmente referenciados. O desenvolvimento da pesquisa, em cada território, produzida em conjunto com pesquisadores sociais e organizações coletivas, tem permitido uma reflexão crítica e visibilizado à centralidade das redes construídas pelos atores locais. Esse percurso permite considerar o modo de produzir vida em territórios marcados pela desigualdade e reconhecer seus desafios. Caminhar nesse complexo processo atravessado pela pandemia é o desafio e a riqueza desse estudo.

Abstract Introduction: sarcopenia is a disease characterized by reduced musculoskeletal tissue and muscle strength. The estimation of appendicular lean soft tissue by DXA (ALSTDXA) is one of the criteria for the diagnosis of sarcopenia. However, this method is expensive and not readily avaiable in clinical practice. Anthropometric equations are low-cost and able to accurate predict ALST, but such equations have not been validated for male Brazilian older adults between the ages of 60 to 79 years. To this end, this study sought to validate the existing predictive anthropometric equations for ALST, and to verify its accuracy for the diagnosis of sarcopenia in male Brazilian older adults. Methods: this cross-sectional study recruited and enrolled 25 male older adults (69.3 ± 5.60 years). ALSTDXA and anthropometric measures were determined. ALST estimations with 13 equations were compared to ALSTDXA. The validity of the equations was established when: p > 0.05 (paired t-test); standard error of the estimate (SEE) < 3.5 kg; and coefficient of determination r² > 0.70. Results: two Indian equations met the criteria (Kulkarini 1: 22.19 ± 3.41 kg; p = 0.134; r² = 0.78; EPE = 1.3 kg. Kulkarini 3: 22.14 ± 3.52 kg; p = 0.135; r² = 0.82; SEE = 1.2 kg). However, these equations presented an average bias (Bland-Altman: 0.54 and 0.48 kg) and ‘false negative’ classification for the ALST index. Thus, three explanatory equations were developed. The most accurate equation demonstrated a high level of agreement (r2adj = 0.87) and validity (r²PRESS = 0.83), a low predictive error (SEEPRESS = 1.53 kg), and an adequate ALST classification. Conclusion: anthropometric models for predicting ALST are valid alternatives for the diagnosis and monitoring of sarcopenia in older adults; however, population specificity affects predictive validity, with risks of false positive/negative misclassification.

Resumen Introducción: la sarcopenia es una enfermedad caracterizada por una reducción del tejido musculoesquelético y la fuerza muscular. Uno de los criterios utilizados para su diagnóstico es la determinación de tejido blando magro apendicular por DXA (TBMADXA), método costoso que no siempre está disponible en la práctica clínica. Las ecuaciones antropométricas suponen un bajo coste y predicen bien el TBMA, pero con una validez desconocida para los varones brasileños de 60 a 79 años. Por lo tanto, nuestro objetivo fue validar las ecuaciones antropométricas existentes predictivas del TBMA y verificar su precisión para el diagnóstico de sarcopenia en varones brasileños de edad avanzada. Métodos: participaron en este estudio transversal 25 hombres de edad avanzada (69,3 ± 5,60 años). Se determinaron el TBMADXA y las medidas antropométricas. Las ecuaciones predictivas del TBMA se compararon con el TBMADXA. La validez de las ecuaciones en las comparaciones se confirmó cuando: p > 0,05 (prueba de la “t” pareada); error estándar estimado (EEE) < 3,5 kg; coeficiente de determinación r² > 0,70. Resultados: dos ecuaciones indias cumplieron los criterios (Kulkarini 1: 22,19 ± 3,41 kg; p = 0,134; r² = 0,78; EEE = 1,3 kg. Kulkarini 3: 22,14 ± 3,52 kg; p = 0,135; r² = 0,82; EEE = 1,2 kg). Sin embargo, presentaron sesgo promedio (Bland-Altman: 0,54 y 0,48 kg) y clasificación de ‘falso negativo’ para el índice de TBMA. Por lo tanto, se crearon tres ecuaciones explicativas. La ecuación más precisa mostró un alto acuerdo (r2adj = 0,87), uma alta validez (r²PRESS = 0,83), um bajo error predictivo (EEEPRESS = 1,53 kg) y uma clasificación del TBMA adecuada. Conclusión: los modelos antropométricos para predecir el TBMA son alternativas válidas para el diagnóstico y el seguimiento de la sarcopenia en los ancianos. Pero la especificidad de la población afecta a su validez predictiva, con riesgos de incorrección por clasificación falsa positiva/negativa.

RESUMO O objetivo geral do artigo foi compartilhar a investigação em curso que se propõe a analisar as vivências, os processos e os impactos sistêmicos da pandemia de Covid-19 e das medidas e ações realizadas para a sua prevenção, contenção e enfrentamento. O estudo considera as desigualdades nas vivências da pandemia em populações de diferentes territórios vulneráveis. São 14 territórios da Região Metropolitana de São Paulo e da Baixada Santista. O delineamento da pesquisa busca qualificar o olhar para a vivência da pandemia em sua complexidade, via produção interdisciplinar do conhecimento, realizada com as populações estudadas. O coletivo de pesquisadores é formado por moradores dos territórios, estudantes e pesquisadores ligados à universidade. Unifica este coletivo o compromisso de produzir conhecimentos científicos socialmente referenciados. O desenvolvimento da pesquisa, em cada território, produzida em conjunto com pesquisadores sociais e organizações coletivas, tem permitido uma reflexão crítica e visibilizado a centralidade das redes construídas pelos atores locais. Esse percurso permite considerar o modo de produzir vida em territórios marcados pela desigualdade e reconhecer seus desafios. Caminhar nesse complexo processo atravessado pela pandemia é o desafio e a riqueza desse estudo.

ABSTRACT This paper presents an ongoing investigation that analyzes life experiences, processes and systemic impacts of the Covid-19 pandemic and examines the measures and actions to prevent, contain and respond to it. The study focuses on the inequalities of life experiences of the pandemic in populations that live in fourteen vulnerable territories of the Metropolitan Area of São Paulo and the city of Santos (Brazil). The group of researchers is composed of people who live in those territories and students and professors of the Federal University of São Paulo. The research design focuses on comprehending the experience of the pandemic in its complexity, through an interdisciplinary production of scientific knowledge that is socially referenced and committed to the participation of the populations studied. The field research in each territory, which counts with the participation of local organizations, is producing a critical reflection on the experience of the pandemic and giving visibility to the centrality of social networks weaved by local actors. This path allows us to understand the ways of producing life in territories stressed by inequality and to recognize their challenges. To go through this complex process crossed by the pandemic is the challenge and the richness of this study.

RESUMO O objetivo geral do artigo foi compartilhar a investigação em curso que se propõe a analisar as vivências, os processos e os impactos sistêmicos da pandemia de Covid-19 e das medidas e ações realizadas para a sua prevenção, contenção e enfrentamento. O estudo considera as desigualdades nas vivências da pandemia em populações de diferentes territórios vulneráveis. São 14 territórios da Região Metropolitana de São Paulo e da Baixada Santista. O delineamento da pesquisa busca qualificar o olhar para a vivência da pandemia em sua complexidade, via produção interdisciplinar do conhecimento, realizada com as populações estudadas. O coletivo de pesquisadores é formado por moradores dos territórios, estudantes e pesquisadores ligados à universidade. Unifica este coletivo o compromisso de produzir conhecimentos científicos socialmente referenciados. O desenvolvimento da pesquisa, em cada território, produzida em conjunto com pesquisadores sociais e organizações coletivas, tem permitido uma reflexão crítica e visibilizado a centralidade das redes construídas pelos atores locais. Esse percurso permite considerar o modo de produzir vida em territórios marcados pela desigualdade e reconhecer seus desafios. Caminhar nesse complexo processo atravessado pela pandemia é o desafio e a riqueza desse estudo.

ABSTRACT This paper presents an ongoing investigation that analyzes life experiences, processes and systemic impacts of the Covid-19 pandemic and examines the measures and actions to prevent, contain and respond to it. The study focuses on the inequalities of life experiences of the pandemic in populations that live in fourteen vulnerable territories of the Metropolitan Area of São Paulo and the city of Santos (Brazil). The group of researchers is composed of people who live in those territories and students and professors of the Federal University of São Paulo. The research design focuses on comprehending the experience of the pandemic in its complexity, through an interdisciplinary production of scientific knowledge that is socially referenced and committed to the participation of the populations studied. The field research in each territory, which counts with the participation of local organizations, is producing a critical reflection on the experience of the pandemic and giving visibility to the centrality of social networks weaved by local actors. This path allows us to understand the ways of producing life in territories stressed by inequality and to recognize their challenges. To go through this complex process crossed by the pandemic is the challenge and the richness of this study.