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ABSTRACT Inactivated COVID-19 vaccines data in immunocompromised individuals are scarce. This trial assessed the immunogenicity of two CoronaVac doses and additional BNT162b2 mRNA vaccine doses in immunocompromised (IC) and immunocompetent (H) individuals. Adults with solid organ transplant (SOT), hematopoietic stem cell transplant, cancer, inborn immunity errors or rheumatic diseases were included in the IC group. Immunocompetent adults were used as control group for comparison. Participants received two CoronaVac doses within a 28-day interval. IC received two additional BNT162b2 doses and H received a third BNT162b2 dose (booster). Blood samples were collected at baseline, 28 days after each dose, pre-booster and at the trial end. We used three serological tests to detect antibodies to SARS-CoV-2 nucleocapsid (N), trimeric spike (S), and receptor binding domain (RBD). Outcomes included seroconversion rates (SCR), geometric mean titers (GMT) and GMT ratio (GMTR). A total of 241 IC and 100 H adults participated in the study. After two CoronaVac doses, IC had lower SCR than H: anti-N, 33.3% vs 79%; anti-S, 33.8% vs 86%, and anti-RBD, 48.5% vs 85%, respectively. IC also showed lower GMT than H: anti-N, 2.3 vs 15.1; anti-S, 58.8 vs 213.2 BAU/mL; and anti-RBD, 22.4 vs 168.0 U/mL, respectively. After the 3rd and 4th BNT162b2 doses, IC had significant anti-S and anti-RBD seroconversion, but still lower than H after the 3rd dose. After boosting, GMT increased in IC, but remained lower than in the H group. CoronaVac two-dose schedule immunogenicity was lower in IC than in H. BNT162b2 heterologous booster enhanced immune response in both groups. COVID19 COVID 19 COVID-1 scarce BNTb BNT b BNT162b (IC (H SOT, SOT , (SOT) cancer comparison 28day day interval booster. . (booster) baseline 2 prebooster pre end SARSCoV2 SARSCoV SARS CoV SARS-CoV- N, N (N) S, S (S) RBD. RBD (RBD) SCR, (SCR) (GMT GMTR. GMTR (GMTR) 24 10 study antiN, antiN anti anti-N 333 33 3 33.3 79% 79 antiS, antiS 338 8 33.8 86 86% antiRBD, antiRBD RBD, 485 48 5 48.5 85 85% respectively 23 2. 15.1 151 15 1 588 58 58. 2132 213 213. BAU/mL BAUmL BAU mL 224 22 4 22. 1680 168 0 168. UmL U U/mL rd th boosting twodose groups COVID1 COVID- (SOT (booster SARS-CoV (N (S (RBD (SCR (GMTR 33. 7 48. 15. 21 16

https://doi.org/10.1590/s1678-9946202466024

Episodic memory improvement in illiterate adults attending late-life education irrespective of low socioeconomic status: insights from the PROAME study latelife late life status
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Ruppert, Emma Patrice

; Rocha, João Victor de Faria

; Silva, Aída Lourandes da

; Tomaz, Kelle Luisa dos Santos

; Friedlaender, Clarisse Vasconcelos

; Assenção, Joanna de Castro Magalhães

; Rincon, Luciana Paula

; Ribeiro, Norton Gray Ferreira

; Santos, Dulce Constantina de Souza

; Lima, Ana Paula Zacarias

; Allen, Isabel Elaine

; Caramelli, Paulo

; Grinberg, Lea Tenenholz

; Maciel, Francisca Izabel Pereira

; Resende, Elisa de Paula França

Dementia & Neuropsychologia

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2024, Volume 18 elocation e20230098

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

RESUMO A maioria das pessoas com demência vive em países de baixa/média renda, onde recursos essenciais para a saúde cerebral, como educação de qualidade, ainda não são amplamente acessíveis. No Brasil, o analfabetismo ainda é frequente, especialmente em comunidades de baixo nível socioeconômico. O estudo PROAME teve como objetivo explorar a educação básica tardia em pessoas analfabetas como ferramenta para o aumento da reserva cognitiva. Objetivo: Investigar a relação entre nível socioeconômico com aprendizado e com desempenho em testes cognitivos, em adultos analfabetos. Métodos: Este estudo clínico de seis meses (NCT04473235) contou com 108 participantes inscritos no projeto Educação para Jovens e Adultos (EJA), dos quais 77 completaram os testes. O nível socioeconômico de cada participante foi medido usando-se: o Índice de Qualidade de Vida Urbana, o Índice de Desenvolvimento Humano Municipal e o nível socioeconômico doméstico. Avaliações cognitivas incluíram: o Teste de Recordação Seletiva Livre e Guiada (TRSLG), uma lista de palavras para avaliar leitura e a matriz Beta III. Resultados: A amostra era predominantemente feminina, com idade média de 58,5. Os participantes melhoraram a leitura (p=0,01) e o TRSLG (p=0,003). Com relação à memoria episódica, as mulheres tiveram resultados superiores aos dos homens (p=0,007) e participantes mais jovens melhoraram mais que seus colegas mais velhos (p=0,001). Não foi observada nenhuma relação entre o nível socioeconômico e o desempenho cognitivo. Conclusão: Independentemente do nível socioeconômico, participantes obtiveram resultados positivos após frequentar a educação básica. Isso sugere que a educação tardia pode ser uma medida preventiva não farmacológica importante, especialmente em países de baixa/média renda. baixamédia baixa renda cerebral qualidade acessíveis Brasil frequente cognitiva Objetivo cognitivos analfabetos Métodos NCT04473235 NCT (NCT04473235 10 EJA, EJA , (EJA) 7 usandose usando se usando-se Urbana doméstico incluíram TRSLG, (TRSLG) III Resultados feminina 585 58 5 58,5 p=0,01 p001 p 0 01 (p=0,01 p=0,003. p0003 p=0,003 . 003 (p=0,003) episódica p=0,007 p0007 007 (p=0,007 p=0,001. p0001 p=0,001 001 (p=0,001) cognitivo Conclusão importante NCT0447323 (NCT0447323 1 (EJA (TRSLG 58, p=0,0 p00 (p=0,0 p000 p=0,00 00 (p=0,003 (p=0,00 (p=0,001 NCT044732 (NCT044732 p=0, p0 (p=0, NCT04473 (NCT04473 p=0 (p=0 NCT0447 (NCT0447 p= (p= NCT044 (NCT044 (p NCT04 (NCT04 NCT0 (NCT0 (NCT

ABSTRACT The majority of people with dementia live in low or middle-income countries (LMICs) where resources that play a crucial role in brain health, such as quality education, are still not widely available. In Brazil, illiteracy remains a prevalent issue, especially in communities with lower socioeconomic status (SES). The PROAME study set out to explore basic education in illiterate adults as a means to improve cognitive reserve. Objective: This manuscript aims to explore the relationship between SES and learning, as well as cognitive outcomes, in an older illiterate population. Methods: This six-month clinical trial (NCT04473235) involved 108 participants, of which 77 concluded all assessments, enrolled in late-life basic education. SES assessments included Quality of Urban Living Index, Municipal Human Development Index and Household SES calculated for each participant. Cognitive assessments encompassed the Free and Cued Selective Reminding Test (FCSRT), a word list to assess reading, and the Beta III matrix. Results: The sample consisted primarily of women, with a mean age of 58.5. Participants improved their reading (p=0.01) and their FCSRT (p=0.003). Regarding episodic memory, women outperformed men (p=0.007) and younger participants improved more than their older counterparts (p=0.001). There was no association observed between SES and cognitive outcomes. Conclusion: Irrespective of SES, participants demonstrated positive outcomes after attending basic education. These findings highlight that late life education could be an important non-pharmacologic preventative measure, especially in LMICs. middleincome middle income LMICs (LMICs health available Brazil issue SES. . (SES) reserve Objective learning population Methods sixmonth six month NCT04473235 NCT (NCT04473235 10 7 latelife participant FCSRT, , (FCSRT) matrix Results 585 58 5 58.5 p=0.01 p001 p 0 01 (p=0.01 p=0.003. p0003 p=0.003 003 (p=0.003) memory p=0.007 p0007 007 (p=0.007 p=0.001. p0001 p=0.001 001 (p=0.001) Conclusion nonpharmacologic non pharmacologic measure (SES NCT0447323 (NCT0447323 1 (FCSRT 58. p=0.0 p00 (p=0.0 p000 p=0.00 00 (p=0.003 (p=0.00 (p=0.001 NCT044732 (NCT044732 p=0. p0 (p=0. NCT04473 (NCT04473 p=0 (p=0 NCT0447 (NCT0447 p= (p= NCT044 (NCT044 (p NCT04 (NCT04 NCT0 (NCT0 (NCT

https://doi.org/10.1590/1980-5764-dn-2023-0098

Posicionamento do Departamento de Imagem Cardiovascular da Sociedade Brasileira de Cardiologia sobre o Uso do Strain Miocárdico na Rotina do Cardiologista – 2023 202 20 2
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Almeida, André Luiz Cerqueira

; Melo, Marcelo Dantas Tavares de

; Bihan, David Costa de Souza Le

; Vieira, Marcelo Luiz Campos

; Pena, José Luiz Barros

; Del Castillo, José Maria

; Abensur, Henry

; Hortegal, Renato de Aguiar

; Otto, Maria Estefania Bosco

; Piveta, Rafael Bonafim

; Dantas, Maria Rosa

; Assef, Jorge Eduardo

; Beck, Adenalva Lima de Souza

; Santo, Thais Harada Campos Espirito

; Silva, Tonnison de Oliveira

; Salemi, Vera Maria Cury

; Rocon, Camila

; Lima, Márcio Silva Miguel

; Barberato, Silvio Henrique

; Rodrigues, Ana Clara

; Rabschkowisky, Arnaldo

; Frota, Daniela do Carmo Rassi

; Gripp, Eliza de Almeida

; Barretto, Rodrigo Bellio de Mattos

; Silva, Sandra Marques e

; Cauduro, Sanderson Antonio

; Pinheiro, Aurélio Carvalho

; Araujo, Salustiano Pereira de

; Tressino, Cintia Galhardo

; Silva, Carlos Eduardo Suaide

; Monaco, Claudia Gianini

; Paiva, Marcelo Goulart

; Fisher, Cláudio Henrique

; Alves, Marco Stephan Lofrano

; Grau, Cláudia R. Pinheiro de Castro

; Santos, Maria Veronica Camara dos

; Guimarães, Isabel Cristina Britto

; Morhy, Samira Saady

; Leal, Gabriela Nunes

; Soares, Andressa Mussi

; Cruz, Cecilia Beatriz Bittencourt Viana

; Guimarães Filho, Fabio Villaça

; Assunção, Bruna Morhy Borges Leal

; Fernandes, Rafael Modesto

; Saraiva, Roberto Magalhães

; Tsutsui, Jeane Mike

; Soares, Fábio Luis de Jesus

; Falcão, Sandra Nívea dos Reis Saraiva

; Hotta, Viviane Tiemi

; Armstrong, Anderson da Costa

; Hygidio, Daniel de Andrade

; Miglioranza, Marcelo Haertel

; Camarozano, Ana Cristina

; Lopes, Marly Maria Uellendahl

; Cerci, Rodrigo Julio

; Siqueira, Maria Eduarda Menezes de

; Torreão, Jorge Andion

; Rochitte, Carlos Eduardo

; Felix, Alex

Arquivos Brasileiros de Cardiologia

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dec 2023, Volume 120 N. 12 elocation e20230646

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

https://doi.org/10.36660/abc.20230646

Perfil e essencialidade da Enfermagem no contexto da pandemia da COVID-19
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Santos, Betânia Maria Pereira dos

; Gomes, Antonio Marcos Freire

; Lourenção, Luciano Garcia

; Cunha, Isabel Cristina Kowal Olm

; Cavalcanti, Aurilene Josefa Cartaxo de Arruda

; Silva, Manoel Carlos Neri da

; Lopes Neto, David

; Freire, Neyson Pinheiro

Ciência & Saúde Coletiva

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oct 2023, Volume 28 N. 10 Pages 2785 - 2796

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

Resumo A pesquisa tem por objetivo descrever o perfil sociodemográfico e de saúde dos profissionais de enfermagem no contexto da pandemia da COVID-19 e propõe uma análise reflexiva sobre a essencialidade da categoria frente às demandas intrínsecas dos pacientes e do sistema de saúde brasileiro, especialmente, no contexto da emergência de saúde pública deflagrada pelo avanço exponencial do vírus SARS-CoV-2. O estudo revela a relação entre as injustiças históricas e os diferentes tipos de desigualdade que afetam e causam a vulnerabilidade da profissão, com fulcro na apresentação de potenciais perspectivas decorrentes desse processo histórico e dos acontecimentos recentes.

Abstract The present study aims to describe the sociodemographic and health profile of nursing professionals in the context of the COVID-19 pandemic and propose a reflective analysis on the essentiality of the category facing the intrinsic demands of patients and the Brazilian health system, especially in the context of the public health emergency triggered by the exponential advance of the SARS-CoV-2 virus. This study reveals the relationship between historical injustices and the different types of inequality that impacted and caused the vulnerability of the profession, with an emphasis on the presentation of potential perspectives arising from this historical process and recent events.

https://doi.org/10.1590/1413-812320232810.09772023

Neck circumference as a predictor of cardiometabolic risk and truncal obesity in people living with HIV
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Oliveira, Iara Katrynne Fonsêca

; Teixeira, Nayra do Socorro Caldas Carvalho de Almeida

; Rêgo, Beatriz de Mello Pereira

; Aires, Isabel Oliveira

; Rodrigues, Renata Rios Torres

; Araújo, Robson Eduardo da Silva

; Lima, Carlos Henrique Ribeiro

; Sousa, Rosana Rodrigues de

; Carvalho, Cecília Maria Resende Gonçalves de

; Costa, Dorcas Lamounier

; Santos, Marize Melo dos

; Paz, Suzana Maria Rebelo Sampaio da

; Paiva, Adriana de Azevedo

Nutrición Hospitalaria

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oct 2023, Volume 40 N. 5 Pages 1000 - 1008

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

Abstract Introduction: recent studies have suggested the use of neck circumference as a parameter capable of identifying risks of cardiometabolic complications and the accumulation of truncal fat caused by both antiretroviral therapy and the lifestyle of people with the human immunodeficiency virus (HIV). Objective: to investigate the relationship between neck circumference and anthropometric indicators and to assess cardiometabolic risk and truncal obesity through proposed cut-off points. Methods: cross-sectional study including 233 people with HIV. Demographic, socioeconomic, lifestyle and clinical data were collected using a structured questionnaire. The anthropometric evaluation included: weight, height, body mass index (BMI) measurements; waist (WC), neck (NC), arm and arm muscle circumferences; triceps and subscapular skinfolds and their sum. ROC curves were constructed to determine the accuracy of NC in predicting cardiometabolic risk in people living with HIV. Results: the sample was 57.5 % male, with a mean age of 38.4 years (95 % CI: 37.2-39.7 years). NC showed a positive and significant correlation with all anthropometric variables analyzed (p < 0.05), and a higher correlation strength with WC and BMI. The NC cut-off point selected as a predictor of risk of cardiac metabolic complications and truncal obesity in women was ≥ 32.4 cm, considering both WC and BMI. For men, the NC cut-off points were different when considering WC (≥ 39.6 cm) and BMI (≥ 38.1 cm) as a reference. It is worth noting that NC performed well in ROC curve analysis for men, while in women it was a poor performance. Conclusion: NC proved to be a promising indicator in the assessment of nutrition and health of people living with HIV, especially in men.

Resumen Introducción: estudios recientes han sugerido el uso de la circunferencia del cuello como parámetro capaz de identificar los riesgos de complicaciones cardiometabólicas y la acumulación de grasa troncal causados tanto por la terapia antirretroviral como por el estilo de vida de las personas con el virus de la inmunodeficiencia humana (VIH). Objetivo: investigar la relación entre la circunferencia del cuello y los indicadores antropométricos y evaluar el riesgo cardiometabólico y la obesidad troncal a través de los puntos de corte propuestos. Métodos: estudio transversal que incluyó a 233 personas con VIH. Se recogieron datos demográficos, socioeconómicos, de estilo de vida y clínicos mediante un cuestionario estructurado. La evaluación antropométrica incluyó: medidas de peso, altura, índice de masa corporal (IMC); circunferencias de cintura (CC), cuello (CN), brazo (CA) y músculo del brazo (MCB); pliegues cutáneos del tríceps y subescapular y su suma. Se construyeron curvas ROC para determinar la precisión de la CN en la predicción del riesgo cardiometabólico en personas que viven con el VIH. Resultados: el 57,5 % de la muestra eran varones, con una edad media de 38,4 años (IC 95 %: 37,2-39,7 años). La CN mostró una correlación positiva y significativa (p < 0,05) con todas las variables antropométricas analizadas, y una mayor fuerza de correlación con la CC y el IMC. El punto de corte de la CN seleccionado como predictor de riesgo de complicaciones metabólicas cardiacas y obesidad troncular en mujeres fue ≥ 32,4 cm, considerando tanto la CC como el IMC. En el caso de los hombres, los puntos de corte de la CN fueron diferentes al considerar como referencia la CC (≥ 39,6 cm) y el IMC (≥ 38,1 cm). Cabe destacar que la CN obtuvo buenos resultados en el análisis de la curva ROC en el caso de los hombres, mientras que en el de las mujeres fue deficiente. Conclusión: la CN demostró ser un indicador prometedor en la evaluación de la nutrición y la salud de las personas que viven con el VIH, especialmente en los hombres.

https://doi.org/10.20960/nh.04402

Perfil e essencialidade da Enfermagem no contexto da pandemia da COVID-19 COVID19 COVID 19 COVID-1 COVID1 1 COVID-
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Santos, Betânia Maria Pereira dos

; Gomes, Antonio Marcos Freire

; Lourenção, Luciano Garcia

; Cunha, Isabel Cristina Kowal Olm

; Cavalcanti, Aurilene Josefa Cartaxo de Arruda

; Silva, Manoel Carlos Neri da

; Lopes Neto, David

; Freire, Neyson Pinheiro

Ciência & Saúde Coletiva

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oct 2023, Volume 28 N. 10 Pages 2785 - 2796

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

https://doi.org/10.1590/1413-812320232810.09772023

[SciELO Preprints] - Brazilian Guidelines for In-office and Out-of-office Blood Pressure Measurement – 2023
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Feitosa, Audes Diógenes de Magalhães Barroso, Weimar Kunz Sebba Mion Júnior, Décio Nobre, Fernando Mota-Gomes, Marco Antonio Jardim, Paulo Cesar Brandão Veiga Amodeo, Celso Camargo, Adriana Alessi, Alexandre Sousa, Ana Luiza Lima Brandão, Andréa Araujo Pio-Abreu, Andrea Sposito, Andrei Carvalho Pierin, Angela Maria Geraldo Paiva, Annelise Machado Gomes de Spinelli, Antonio Carlos de Souza Machado, Carlos Alberto Poli-de-Figueiredo, Carlos Eduardo Rodrigues, Cibele Isaac Saad Forjaz, Cláudia Lúcia de Moraes Sampaio, Diogo Pereira Santos Barbosa, Eduardo Costa Duarte Freitas, Elizabete Viana de Cestário , Elizabeth do Espírito Santo Muxfeldt, Elizabeth Silaid Lima Júnior, Emilton Campana, Erika Maria Gonçalves Feitosa, Fabiana Gomes Aragão Magalhães Consolim-Colombo, Fernanda Marciano Almeida, Fernando Antônio de Silva, Giovanio Vieira da Moreno Júnior, Heitor Finimundi, Helius Carlos Guimarães, Isabel Cristina Britto Gemelli, João Roberto Barreto Filho, José Augusto Soares Vilela-Martin, José Fernando Ribeiro, José Marcio Yugar-Toledo, Juan Carlos Magalhães, Lucélia Batista Neves Cunha Drager, Luciano Ferreira Bortolotto, Luiz Aparecido Alves, Marco Antonio de Melo Malachias, Marcus Vinícius Bolívar Neves, Mario Fritsch Toros Santos, Mayara Cedrim Dinamarco, Nelson Moreira Filho, Osni Passarelli Júnior, Oswaldo Valverde de Oliveira Vitorino, Priscila Valverde de Oliveira Miranda, Roberto Dischinger Bezerra, Rodrigo Pedrosa, Rodrigo Pinto Paula, Rogério Baumgratz de Okawa, Rogério Toshiro Passos Póvoa, Rui Manuel dos Santos Fuchs, Sandra C. Inuzuka, Sayuri Ferreira-Filho, Sebastião R. Paffer Fillho, Silvio Hock de Jardim, Thiago de Souza Veiga Guimarães Neto, Vanildo da Silva Koch, Vera Hermina Gusmão, Waléria Dantas Pereira Oigman, Wille Nadruz, Wilson

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Publication date: 2023-09-23

Abstract: En Es Pt

Hypertension is one of the primary modifiable risk factors for morbidity and mortality worldwide, being a major risk factor for coronary artery disease, stroke, and kidney failure. Furthermore, it is highly prevalent, affecting more than one-third of the global population. Blood pressure measurement is a MANDATORY procedure in any medical care setting and is carried out by various healthcare professionals. However, it is still commonly performed without the necessary technical care. Since the diagnosis relies on blood pressure measurement, it is clear how important it is to handle the techniques, methods, and equipment used in its execution with care. It should be emphasized that once the diagnosis is made, all short-term, medium-term, and long-term investigations and treatments are based on the results of blood pressure measurement. Therefore, improper techniques and/or equipment can lead to incorrect diagnoses, either underestimating or overestimating values, resulting in inappropriate actions and significant health and economic losses for individuals and nations. Once the correct diagnosis is made, as knowledge of the importance of proper treatment advances, with the adoption of more detailed normal values and careful treatment objectives towards achieving stricter blood pressure goals, the importance of precision in blood pressure measurement is also reinforced. Blood pressure measurement (described below) is usually performed using the traditional method, the so-called casual or office measurement. Over time, alternatives have been added to it, through the use of semi-automatic or automatic devices by the patients themselves, in waiting rooms or outside the office, in their own homes, or in public spaces. A step further was taken with the use of semi-automatic devices equipped with memory that allow sequential measurements outside the office (ABPM; or HBPM) and other automatic devices that allow programmed measurements over longer periods (HBPM). Some aspects of blood pressure measurement can interfere with obtaining reliable results and, consequently, cause harm in decision-making. These include the importance of using average values, the variation in blood pressure during the day, and short-term variability. These aspects have encouraged the performance of a greater number of measurements in various situations, and different guidelines have advocated the use of equipment that promotes these actions. Devices that perform HBPM or ABPM, which, in addition to allowing greater precision, when used together, detect white coat hypertension (WCH), masked hypertension (MH), sleep blood pressure alterations, and resistant hypertension (RHT) (defined in Chapter 2 of this guideline), are gaining more and more importance. Taking these details into account, we must emphasize that information related to diagnosis, classification, and goal setting is still based on office blood pressure measurement, and for this reason, all attention must be given to the proper execution of this procedure.

La hipertensión arterial (HTA) es uno de los principales factores de riesgo modificables para la morbilidad y mortalidad en todo el mundo, siendo uno de los mayores factores de riesgo para la enfermedad de las arterias coronarias, el accidente cerebrovascular (ACV) y la insuficiencia renal. Además, es altamente prevalente y afecta a más de un tercio de la población mundial. La medición de la presión arterial (PA) es un procedimiento OBLIGATORIO en cualquier atención médica o realizado por diferentes profesionales de la salud. Sin embargo, todavía se realiza comúnmente sin los cuidados técnicos necesarios. Dado que el diagnóstico se basa en la medición de la PA, es claro el cuidado que debe haber con las técnicas, los métodos y los equipos utilizados en su realización. Debemos enfatizar que una vez realizado el diagnóstico, todas las investigaciones y tratamientos a corto, mediano y largo plazo se basan en los resultados de la medición de la PA. Por lo tanto, las técnicas y/o equipos inadecuados pueden llevar a diagnósticos incorrectos, subestimando o sobreestimando valores y resultando en conductas inadecuadas y pérdidas significativas para la salud y la economía de las personas y las naciones. Una vez realizado el diagnóstico correcto, a medida que avanza el conocimiento sobre la importancia del tratamiento adecuado, con la adopción de valores de normalidad más detallados y objetivos de tratamiento más cuidadosos hacia metas de PA más estrictas, también se refuerza la importancia de la precisión en la medición de la PA. La medición de la PA (descrita a continuación) generalmente se realiza mediante el método tradicional, la llamada medición casual o de consultorio. Con el tiempo, se han agregado alternativas a través del uso de dispositivos semiautomáticos o automáticos por parte del propio paciente, en salas de espera o fuera del consultorio, en su propia residencia o en espacios públicos. Se dio un paso más con el uso de dispositivos semiautomáticos equipados con memoria que permiten mediciones secuenciales fuera del consultorio (AMPA; o MRPA) y otros automáticos que permiten mediciones programadas durante períodos más largos (MAPA). Algunos aspectos en la medición de la PA pueden interferir en la obtención de resultados confiables y, en consecuencia, causar daños en las decisiones a tomar. Estos incluyen la importancia de usar valores promedio, la variación de la PA durante el día y la variabilidad a corto plazo. Estos aspectos han alentado la realización de un mayor número de mediciones en diversas situaciones, y diferentes pautas han abogado por el uso de equipos que promuevan estas acciones. Los dispositivos que realizan MRPA o MAPA, que además de permitir una mayor precisión, cuando se usan juntos, detectan la hipertensión de bata blanca (HBB), la hipertensión enmascarada (HM), las alteraciones de la PA durante el sueño y la hipertensión resistente (HR) (definida en el Capítulo 2 de esta guía), están ganando cada vez más importancia. Teniendo en cuenta estos detalles, debemos enfatizar que la información relacionada con el diagnóstico, la clasificación y el establecimiento de objetivos todavía se basa en la medición de la presión arterial en el consultorio, y por esta razón, se debe prestar toda la atención a la ejecución adecuada de este procedimiento.

A hipertensão arterial (HA) é um dos principais fatores de risco modificáveis para morbidade e mortalidade em todo o mundo, sendo um dos maiores fatores de risco para doença arterial coronária, acidente vascular cerebral (AVC) e insuficiência renal. Além disso, é altamente prevalente e atinge mais de um terço da população mundial. A medida da PA é procedimento OBRIGATÓRIO em qualquer atendimento médico ou realizado por diferentes profissionais de saúde. Contudo, ainda é comumente realizada sem os cuidados técnicos necessários. Como o diagnóstico se baseia na medida da PA, fica claro o cuidado que deve haver com as técnicas, os métodos e os equipamentos utilizados na sua realização. Deve-se reforçar que, feito o diagnóstico, toda a investigação e os tratamentos de curto, médio e longo prazos são feitos com base nos resultados da medida da PA. Assim, técnicas e/ou equipamentos inadequados podem levar a diagnósticos incorretos, tanto subestimando quanto superestimando valores e levando a condutas inadequadas e grandes prejuízos à saúde e à economia das pessoas e das nações. Uma vez feito o diagnóstico correto, na medida em que avança o conhecimento da importância do tratamento adequado, com a adoção de valores de normalidade mais detalhados e com objetivos de tratamento mais cuidadosos no sentido do alcance de metas de PA mais rigorosas, fica também reforçada a importância da precisão na medida da PA. A medida da PA (descrita a seguir) é habitualmente feita pelo método tradicional, a assim chamada medida casual ou de consultório. Ao longo do tempo, foram agregadas alternativas a ela, mediante o uso de equipamentos semiautomáticos ou automáticos pelo próprio paciente, nas salas de espera ou fora do consultório, em sua própria residência ou em espaços públicos. Um passo adiante foi dado com o uso de equipamentos semiautomáticos providos de memória que permitem medidas sequenciais fora do consultório (AMPA; ou MRPA) e outros automáticos que permitem medidas programadas por períodos mais prolongados (MAPA). Alguns aspectos na medida da PA podem interferir na obtenção de resultados fidedignos e, consequentemente, causar prejuízo nas condutas a serem tomadas. Entre eles, estão: a importância de serem utilizados valores médios, a variação da PA durante o dia e a variabilidade a curto prazo. Esses aspectos têm estimulado a realização de maior número de medidas em diversas situações, e as diferentes diretrizes têm preconizado o uso de equipamentos que favoreçam essas ações. Ganham cada vez mais espaço os equipamentos que realizam MRPA ou MAPA, que, além de permitirem maior precisão, se empregados em conjunto, detectam a HA do avental branco (HAB), HA mascarada (HM), alterações da PA no sono e HA resistente (HAR) (definidos no Capítulo 2 desta diretriz). Resguardados esses detalhes, devemos ressaltar que as informações relacionadas a diagnóstico, classificação e estabelecimento de metas ainda são baseadas na medida da PA de consultório e, por esse motivo, toda a atenção deve ser dada à realização desse procedimento.

https://doi.org/10.1590/SciELOPreprints.7057

Reflexos da COVID-19 na saúde mental de estudantes universitários
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Gonçalves, Sónia P.

; Santos, Joana Vieira dos

; Silva, Isabel S.

Psicologia

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jun 2023, Volume 37 N. 1 Pages 20 - 29

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

Abstract Reflections of COVID-19 on the mental health of university students: In view of the pandemic situation, universities have gone through challenges, such as the change from teaching “face to face” to online classes. The present study aims to contribute to a deeper understanding of the impact confinement situation on Portuguese university students, through the analysis of perceived stress, symptoms of anxiety and depression. 694 Portuguese higher education students participated in the study. The results show moderate to severe symptoms of anxiety disorder, as well as the explanatory contribution of socio-demographic, academic and pandemic experience variables. On the one hand, the protective role of satisfaction with the accompaniment and supervision by teachers and of having “isolated” moments to study should be highlighted. On the other hand, results reveal that the concern with the pandemic and its impact on the educational path are risk factors. This study makes it possible to highlight key points of focus in the prevention of anxiety symptoms.

Resumo Face à situação pandémica, as universidades atravessaram um conjunto de desafios, nomeadamente, a mudança do ensino “face a face” para aulas online. O presente estudo visa contribuir para a compreensão da situação de confinamento em estudantes universitários portugueses, através da análise dos níveis de stress percebido, sintomas de ansiedade e depressão. Participaram no estudo 694 estudantes do ensino superior português. Os resultados denotam sintomas moderados a severos de perturbação ansiosa, bem como o contributo explicativo de variáveis sociodemográficas, académicas e de vivência da pandemia. De destacar por um lado, o papel protetor da satisfação com o acompanhamento e supervisão por parte dos docentes e de ter momentos “isolados” para estudar. Por outro lado, os resultados revelam que a preocupação com a pandemia e com o seu impacto no percurso educacional são fatores de risco. Este estudo possibilita destacar pontos chaves de foco na prevenção de sintomatologia de ansiedade.

https://doi.org/10.17575/psicologia.1698

10.

Reflectance spectroscopy in the prediction of soil organic carbon associated with humic substances
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Ribeiro, Sharon Gomes

; Oliveira, Marcio Regys Rabelo de

; Lopes, Letícia Machado

; Costa, Mirian Cristina Gomes

; Toma, Raul Shiso

; Araújo, Isabel Cristina da Silva

; Moreira, Luis Clenio Jario

; Teixeira, Adunias dos Santos

Revista Brasileira de Ciência do Solo

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2023, Volume 47 elocation e0220143

Abstract: En | Text: En | PDF: En

ABSTRACT Understanding organic carbon and predominant humic fractions in the soil allows contributes to soil quality management. Conventional fractionation techniques require time, excessive sampling, and high maintenance costs. In this study, predictive models for organic carbon in humic substances (HS) were evaluated using hyperspectral data as an alternative to chemical fractionation and quantification by wet digestion. Twenty-nine samples of Neossolos Flúvicos (Fluvents) - A1, and 36 samples of Cambissolos (Inceptisols) - A2 were used. The samples were also analyzed jointly, creating a third sample group - A1&A2. Untransformed spectral reflectance factors were obtained using the FieldSpec Pro FR 3 hyperspectral sensor (350–2500 nm). Pre-processing techniques were employed, including Savitzky–Golay smoothing and first- and second-order derivative analysis. After selecting variables using the Backward method, which removes spectral variables that are not statistically significant for the regression. Estimation models were built by Principal Components Regression (PCR) and Partial Least Squares Regression (PLSR). The spectral data were evaluated individually for soil classes A1 and A2, and jointly for A1&A2. The PLSR was more efficient than PCR, especially for the estimation models that used the first derivative of reflectance employing the three sample groups. For samples of A1, the best estimate was seen for humic acid (RPD = 6.09) and humin (RPD = 2.38); for A2, the best models estimated the OC in fulvic acid (RPD = 2.35) and humin (RPD = 2.51); and for the joint spectral data (A1&A2), the prediction was robust for humin only (RPD = 2.01). The most representative wavelengths were observed using the first derivative with PLSR and PCR, centred on the region between 1600 and 1800 nm. The first-derivative of reflectance calculated more-robust predictive models using PLSR than PCR. The best predictions occurred for organic carbon associated with humic acid in Neossolos Flúvicos, with fulvic acid in Cambissolos, and with humin in both soil classes. management time sampling costs study HS (HS digestion Twentynine Twenty nine Fluvents (Fluvents A Inceptisols (Inceptisols A1A2 AA A1&A2 350–2500 3502500 350 2500 (350–250 nm . nm) Preprocessing Pre processing employed SavitzkyGolay Savitzky Golay secondorder second order analysis method regression PCR (PCR PLSR. (PLSR) groups RPD 6.09 609 6 09 2.38 238 2 38 2.38) 2.35 235 35 2.51 251 51 2.51) A1&A2, , (A1&A2) 2.01. 201 2.01 01 2.01) 160 180 firstderivative morerobust A1A A1&A 350–250 350250 250 (350–25 (PLSR 6.0 60 0 2.3 23 2.5 25 5 (A1&A2 20 2.0 16 18 350–25 35025 (350–2 6. 2. (A1&A 1 350–2 3502 (350– 350– (350 (35 (3 (

https://doi.org/10.36783/18069657rbcs20220143

11.

The Influence of Land Use and Land Cover on Surface Temperature in a Water Catchment Sub-Basin SubBasin Sub Basin
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Santos, Arthur Pereira dos

; Simionatto, Henzo Henrique

; Arantes, Letícia Tondato

; Simonetti, Vanessa Cezar

; Oliveira, Renan Angrizani de

; Sales, Jomil Costa Abrel

; Silva, Darllan Collins da Cunha e

Sociedade & Natureza

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2023, Volume 35 elocation e69161

Abstract: En | Text: En | PDF: En

Abstract Faced with the recent crises of water capture and distribution, managing water resources is a practice that has been gaining prominence in discussions and debates about environmental issues. Thus, this article aims to analyze, in a spatio-temporal way, the Changes in Land Use and Occupation (LULC) and Surface Temperature (LST) in the water catchment sub-basin of Ribeirão Santa Isabel, located in the municipality of Paracatu, Minas Gerais (MG), between the years 1990 and 2020. The choice of the area is justified by the conflicts of use that encompass the sub-basin and by the fact that this is the only source of capture in the municipality, which has already carried out the alteration of the water resource responsible for the capture of water due to the intensity of agricultural practices in the region in the previous area. Through geoprocessing and Remote Sensing (RS) techniques, images from the Landsat-5 and Landsat-8 satellites were used to perform the LST calculations. Regarding usage and occupancy data, the images provided by the Mapbiomas platform were used. It was verified, through the increase in the percentage of the water class and vegetation and the decrease in the agricultural class, that the practices implemented in the study area, in order to conserve the remnants of the biome and maintain a good water availability to the municipality, are having an effect. It was also possible to conclude that LST is affected by LULC, and that the greatest variations occur in non-vegetated areas. distribution issues Thus analyze spatiotemporal spatio temporal way LULC (LULC (LST subbasin sub basin Isabel Paracatu MG, MG , (MG) 199 2020 RS (RS techniques Landsat5 Landsat 5 Landsat- Landsat8 8 calculations data verified effect nonvegetated non vegetated areas (MG 19 202 1 20 2

https://doi.org/10.14393/sn-v35-2023-69161

12.

Getting knowledge to provide care: prevalence and factors associated with Sexually Transmitted Infections in immigrants from Goiás care
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Silva, Carla de Almeida

; Silva, Grazielle Rosa da Costa

; Martins, Thaynara Lorrane Silva

; Moura, Winny Éveny Alves

; Gomes, Davi Oliveira

; Bandeira, Gabriela Nolasco

; Carneiro, Megmar Aparecida dos Santos

; Gonzalez, Roxana Isabel Cardozo

; Pacheco, Leonora Rezende

; Zanchetta, Margareth Santos

; Lima, Juliana de Oliveira Roque e

; Teles, Sheila Araujo

; Caetano, Karlla Antonieta Amorim

Revista da Escola de Enfermagem da USP

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2023, Volume 57 N. spe elocation e20230034

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

RESUMEN Objetivo: Estimar la prevalencia de Enfermedades de Transmisión Sexual (ETS) en inmigrantes y refugiados residentes en la región metropolitana de Goiânia, Goiás. Método: Se trata de un estudio transversal y analítico. La recolección de datos se llevó a cabo desde julio de 2019 hasta enero de 2020 y se incluyeron en la muestra 308 inmigrantes y refugiados. Todos fueron entrevistados cara a cara y sometidos a pruebas de VIH, Sífilis y Hepatitis B, mediante pruebas rápidas.. Resultados: La prevalencia general para cualquiera de las ETS investigadas fue de 8,8% (IC95% 6,0% – 12,3%), siendo 5,8% (IC95% 3,6% – 8,9%) para Hepatitis B, 2,3% para Sífilis (IC95% 1,00% – 4,4%) y 0,7% para VIH (IC95% 0,1% – 2,1%). El análisis múltiple, mediante regresión logística, mostró que las variables género masculino (OR = 2,7) y tiempo de residencia en Brasil (OR = 2,6) se asociaron significativamente con las ETS (p < 0,05). Conclusión: Los resultados de este estudio sugieren que las ETS son un problema de salud en inmigrantes/refugiados, que parecen exacerbarse con la duración de la migración en el país. Se deben considerar políticas públicas que garanticen la atención de la salud de esta población. Objetivo (ETS Goiânia Goiás Método analítico 201 202 30 B rápidas rápidas. Resultados 88 8 8,8 IC95% IC95 IC (IC95 60 6 0 6,0 12,3%, 123 12,3% , 12 3 12,3%) 58 5 5,8 36 3,6 8,9% 89 9 23 2 2,3 100 1 00 1,00 4,4% 44 4 07 7 0,7 01 0,1 2,1%. 21 2,1% . 2,1%) múltiple logística OR 2,7 27 2,6 26 p 0,05. 005 0,05 05 0,05) Conclusión inmigrantesrefugiados inmigrantes/refugiados país población 20 8, IC9 (IC9 6, 12,3 5, 3, 8,9 2, 10 1,0 4,4 0, 2,1 0,0 (IC 12, 1, 4,

ABSTRACT Objective: To estimate the prevalence of Sexually Transmitted Infections (STIs) in immigrants and refugees living in the metropolitan region of Goiânia, Goiás. Method: This is a cross-sectional and analytical study. Data collection was carried out from July 2019 to January 2020 and 308 immigrants and refugees were included in the sample. All were underwent face-to-face interviews and were tested for HIV, Syphilis, and Hepatitis B, using rapid tests. Results: The general prevalence for any of the STIs investigated was 8.8% (95%CI 6.0% – 12.3%), being 5.8% (95%CI 3.6% – 8.9%) for Hepatitis B, 2.3% for Syphilis (95%CI 1.00% – 4.4%) and 0.7% for HIV (95%CI 0.1% – 2.1%). Multiple analysis, using logistic regression, showed that the variables male gender (OR = 2.7) and length of time living in Brazil (OR = 2.6) were significantly associated with STIs (p < 0.05). Conclusion: The results of this study suggest that STIs are a health problem in immigrants/refugees, which appear to be enhanced with the length of migration in the country. Public policies that guarantee health care for this population shall be considered. Objective (STIs Goiânia Goiás Method crosssectional cross sectional 201 202 30 sample facetoface face B tests Results 88 8 8.8 95%CI 95CI CI 95 60 6 0 6.0 12.3%, 123 12.3% , 12 3 12.3%) 58 5 5.8 36 3.6 8.9% 89 9 23 2 2.3 100 1 00 1.00 4.4% 44 4 07 7 0.7 01 0.1 2.1%. 21 2.1% . 2.1%) analysis regression OR 2.7 27 2.6 26 p 0.05. 005 0.05 05 0.05) Conclusion immigrantsrefugees immigrants/refugees country considered 20 8. 6. 12.3 5. 3. 8.9 2. 10 1.0 4.4 0. 2.1 0.0 12. 1. 4.

RESUMO Objetivo: Estimar a prevalência de Infecções Sexualmente Transmissíveis (IST) em imigrantes e refugiados residentes na região metropolitana de Goiânia, Goiás. Método: Trata-se de um estudo transversal e analítico. A coleta de dados foi realizada no período de julho de 2019 a janeiro de 2020 e integraram a amostra 308 imigrantes e refugiados. Todos foram entrevistados face-a-face e testados para HIV, Sífilis e Hepatite B, por meio de testes rápidos. Resultados: A prevalência geral para alguma das IST investigadas foi de 8,8% (IC95% 6,0% – 12,3%), sendo 5,8% (IC95% 3,6% – 8,9%) para Hepatite B, 2,3% para Sífilis (IC95% 1,00% – 4,4%) e 0,7% para HIV (IC95% 0,1% – 2,1%). A análise múltipla, por regressão logística, mostrou que as variáveis sexo masculino (OR = 2,7) e tempo de moradia no Brasil (OR = 2,6) foram associadas significativamente às IST (p < 0,05). Conclusão: Os resultados deste estudo sugerem que as IST são um problema de saúde em imigrantes/refugiados, que parecem ser exacerbadas com o tempo de migração no país. Políticas públicas que garantam a assistência à saúde dessa população devem ser consideradas. Objetivo (IST Goiânia Goiás Método Tratase Trata se analítico 201 202 30 faceaface face B rápidos Resultados 88 8 8,8 IC95% IC95 IC (IC95 60 6 0 6,0 12,3%, 123 12,3% , 12 3 12,3%) 58 5 5,8 36 3,6 8,9% 89 9 23 2 2,3 100 1 00 1,00 4,4% 44 4 07 7 0,7 01 0,1 2,1%. 21 2,1% . 2,1%) múltipla logística OR 2,7 27 2,6 26 p 0,05. 005 0,05 05 0,05) Conclusão imigrantesrefugiados imigrantes/refugiados país consideradas 20 8, IC9 (IC9 6, 12,3 5, 3, 8,9 2, 10 1,0 4,4 0, 2,1 0,0 (IC 12, 1, 4,

https://doi.org/10.1590/1980-220x-reeusp-2023-0034en

13.

Insecticidal plants as trade opportunities and use by small vegetable producers: an example using essential oils to control Diaphania hyalinata (Lepidoptera: Crambidae) producers Lepidoptera (Lepidoptera Crambidae
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SILVA, ISABEL M. DA

; SERRÃO, JOSÉ E.

; SANTOS, MARINALVA M. DOS

; SILVA, RICARDO S. DA

; CARVALHO, AMÉLIA G. DE

; PIRES, EVALDO M.

; ZANUNCIO, JOSÉ C.

; SOARES, MARCUS A.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 N. 4 elocation e20191305

Abstract: En | Text: En | PDF: En

Abstract Production and sale of botanical insecticides depend on knowing the potential opportunities for these products. Essential oils from plants secondary metabolism can control pests, especially in agricultural systems where synthetic insecticides are limited, as in organic agriculture. The objective of this study was to evaluate the toxicity of essential oils to Diaphania hyalinata (Lepidoptera: Crambidae) and to show regions with the potential to use Cinnamomum zeylanicum, Citrus sinensis, and Syzygium aromaticum in the formulation and commercialization of insecticides to control this insect. The C. zeylanicum oil was more toxic to larvae and pupae and the S. aromaticum to eggs of D. hyalinata. Essential oils are an alternative for the management of D. hyalinata. The production of pesticides from essential oils of C. zeylanicum, C. sinensis, and S. aromaticum to control D. hyalinata has high potential in America. Also, Asia, Africa, Europe, the Middle East, and Asia can extract these plants to formulate insecticide molecules for the America countries. products pests limited agriculture Lepidoptera (Lepidoptera Crambidae sinensis insect C S D Also Africa Europe East countries

https://doi.org/10.1590/0001-3765202320191305

14.

Ideal period for mating females of the predator Podisus fuscescens (Dallas, 1851) (Hemiptera: Pentatomidae)
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Silva, Isabel Moreira Da

; Mendes De Sá, Veríssimo Gibran

; Porto Pedrosa, Aline Rodrigues

; Dos Santos Cabral, Maria Jéssica

; Demolin Leite, Germano Leão

; Alvarenga Soares, Marcus

; Cola Zanuncio, José

Revista Colombiana de Entomología

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dec 2022, Volume 48 N. 2 elocation e11699

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

Resumen Mejorar las técnicas para criar depredadores en el laboratorio, incluida la edad de apareamiento, es importante para obtener el mayor número de individuos para los programas de control biológico. El objetivo de este trabajo fue evaluar la fecundidad de hembras del depredador Podisus fuscescens (Dallas, 1851) (Hemiptera: Pentatomidae) con diferentes periodos de pre-apareamiento. Los tratamientos fueron: las hembras de este depredador se aparearon inmediatamente después de la emergencia (T1) o con uno (T2), dos (T3), tres (T4), cuatro (T5) o cinco (T6) días después de la emergencia. Las hembras que se aparearon inmediatamente (T1) y un día después de la emergencia (T2) tuvieron menos posturas que las que se aparearon después de cinco días (T6). El número de ninfas por hembra fue menor para las apareadas en emergencia (T1) y uno o dos días después. El número total de huevos fue menor para las hembras apareadas un día después de la emergencia (T2) que para aquellas apareadas después de cinco días (T6). La proporción de huevos eclosionados fue menor en los tratamientos T1 y T2 en comparación con el tratamiento T6. El período de oviposición y la longevidad de las hembras de P. fuscescens fueron similares entre los tratamientos, sin embargo, el período de preoviposición fue más largo para las hembras del tratamiento T1 que para las de T5 y T6 y el período de posoviposición fue más largo en las hembras del tratamiento T1. Las hembras de P. fuscescens necesitan cinco días después de la emergencia para que su sistema reproductivo madure, lo que mejora su aptitud y evita copulaciones innecesarias.

Abstract The improvement of techniques for the mass rearing of predators in the laboratory, including the age of mating is important to obtain the largest number of individuals for biological control programs. The purpose of this study was to evaluate the females’ fecundity of the predator Podisus fuscescens (Dallas, 1851) (Hemiptera: Pentatomidae) with different pre-mating periods. The females of this predator were mated immediately after emergence (T1) or with one (T2), two (T3), three (T4), four (T5) or five (T6) days after emergence. The females mated immediately and one day after the emergency (T1 and T2) had fewer egg clusters than those mated after five days (T6). The number of nymphs per female was lower for those mated immediately after the emergence (T1) and with one (T2) or two days (T3). The total number of eggs was lower in females mated one day after emergence (T2) than for those mated after five days (T6). The proportion of hatched eggs was lower in the treatments T1 and T2 than in the T6. The oviposition and longevity of P. fuscescens females were similar between treatments; however, the pre-oviposition period longer in the T1 than T5 and T6. The pos-oviposition period was longer in the T1. Podisus fuscescens females require five days after emergence to mature their reproductive system, which improves their fitness and avoids unnecessary mating.

https://doi.org/10.25100/socolen.v48i2.11699

15.

Encapsulation technique efficiency in high zinc chloride concentration clayey soil with traditional agents
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Perez, Isabel Amado

; Ferreira, José Wilson dos Santos

; Malko, José Adriano Cardoso

; Silva, Maria Isabel Pais

; Casagrande, Michéle Dal Toé

Engenharia Sanitaria e Ambiental

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jun 2022, Volume 27 N. 3 Pages 607 - 616

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

RESUMO Ainda que a técnica de encapsulamento seja usada na remediação ambiental há mais de três décadas, existem poucos estudos que avaliam sua eficácia para altas concentrações de contaminantes. Assim, este trabalho tem como objetivo avaliar a eficiência da técnica de encapsulamento de solo argiloso contaminado com 5 e 10% de cloreto de zinco, utilizando cal e cimento. Análises química, mecânica, mineralógica e microscópica foram realizadas para o solo puro, contaminado e encapsulado, com base em ensaios de fluorescência de raios X, resistência à compressão simples, espectrometria de absorção atômica, microscopia eletrônica de varredura e microtomografia de raios X. Ambos os agentes encapsulantes aumentaram a resistência ao longo dos períodos de cura de sete, 28 e 60 dias, embora as interações químicas entre zinco e cal tenham afetado negativamente os ganhos quando comparados ao do cimento. Os lixiviados apresentaram redução significativa na concentração de zinco, acima de 77% para condições experimentais críticas. O contaminante reduziu a presença de elementos químicos que compõem a matriz do solo, fazendo com que os vazios aumentassem; por outro lado, as reações pozolânicas promovidas pela adição de cal e cimento resultaram em distribuição de vazios mais homogênea, melhorando o comportamento mecânico e a capacidade de retenção de cloreto de zinco.

ABSTRACT Although the encapsulation technique has been used in environmental remediation for over three decades, there are few studies evaluating its efficacy for high contaminant concentrations. Therefore, this study aims to evaluate the encapsulation technique efficiency of clayey soil contaminated with 5% and 10% of zinc chloride, using lime and cement. Chemical, mechanical, mineralogical, and microscopic analyses were performed for pure, contaminated, and encapsulated soil, based on X-ray fluorescence (XRF/EDX), unconfined compression strength (UCS), atomic absorption spectrometry (AAS), scanning electron microscopy/energy dispersive X-ray spectrometer (SEM/EDS), and X-ray micro-computed tomography (micro-CT) tests. Although chemical interactions between zinc and lime negatively affected the gains when compared to cement, both encapsulating agents increased the strength over the curing periods of 7, 28, and 60 days. The leachates presented a significant reduction in the contaminant concentration, above 77% for critical experimental conditions. The contaminant reduced the presence of chemical elements that compose the soil matrix, consequently causing the voids to increase; in contrast, pozzolanic reactions promoted by the addition of lime and cement resulted in homogeneous voids distribution, enhancing the mechanical behavior and the capability of zinc chloride retention.

https://doi.org/10.1590/s1413-415220200241

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