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Abstract An integrated approach considering facies, isotopic, and palynological analyses of lake sediments from the Serra Norte de Carajás, southeastern Amazonia, is presented in this work to refine paleoclimate and paleohydrological changes based on upland lake sediments during the late Quaternary. The sediments have a fining-upward deposition cycle typical of upland swamps/lakes. The origin of organic matter is autochthonous mainly related to C3 terrestrial plants, macrophytes and algae. The pollen records of Hedyosmum during the Early Pleistocene suggest lower temperatures than those observed along Holocene. In the transitional period between the Pleistocene and the Holocene, rainfall decreased, causing the retraction of the flooded area, favoring the development of marshy conditions. The Late and Middle Holocene were marked by higher temperatures and lower humidity. Afterward, the increased pollen concentration from canga and forest vegetation, macrophytes, palms, and algae suggested increased humidity in the Early Holocene. The relative contribution of forest pollen along the records indicated that drier conditions were not strong enough for an extensive expansion of canga over forested areas. facies isotopic Carajás Amazonia Quaternary finingupward fining upward swampslakes swamps lakes swamps/lakes C plants decreased area Afterward vegetation palms areas

https://doi.org/10.1590/0001-3765202320230173

Use and misuse of biomarkers and the role of D-dimer and C-reactive protein in the management of COVID-19: A post-hoc analysis of a prospective cohort study
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Gonçalves, Fabio Augusto Rodrigues

; Besen, Bruno Adler Maccagnan Pinheiro

; Lima, Clarice Antunes de

; Corá, Aline Pivetta

; Pereira, Antônio José Rodrigues

; Perazzio, Sandro Félix

; Gouvea, Christiane Pereira

; Fonseca, Luiz Augusto Marcondes

; Trindade, Evelinda Marramon

; Sumita, Nairo Massakazu

; Duarte, Alberto José da Silva

; Lichtenstein, Arnaldo

; Bonfa, Eloisa

; Utiyama, Edivaldo M.

; Segurado, Aluisio C.

; Perondi, Beatriz

; Miethke-Morais, Anna

; Montal, Amanda C.

; Harima, Leila

; Fusco, Solange R. G.

; Silva, Marjorie F.

; Rocha, Marcelo C.

; Marcilio, Izabel

; Rios, Izabel Cristina

; Kawano, Fabiane Yumi Ogihara

; Jesus, Maria Amélia de

; Kallas, Ésper George

; Carmo, Carolina

; Tanaka, Clarice

; Souza, Heraldo Possolo de

; Marchini, Julio F. M.

; Carvalho, Carlos

; Ferreira, Juliana C.

; Levin, Anna Sara Shafferman

; Oliveira, Maura Salaroli

; Guimarães, Thaís

; Lázari, Carolina dos Santos

; Sabino, Ester

; Magri, Marcello M. C.

; Barros-Filho, Tarcisio E. P.

; Francisco, Maria Cristina Peres Braido

; Costa, Silvia F.

Clinics

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2021, Volume 76 elocation e3547

Abstract: En | Text: En | PDF: En

OBJECTIVE: Coronavirus disease 2019 (COVID-19) is associated with high mortality among hospitalized patients and incurs high costs. Severe acute respiratory syndrome coronavirus 2 infection can trigger both inflammatory and thrombotic processes, and these complications can lead to a poorer prognosis. This study aimed to evaluate the association and temporal trends of D-dimer and C-reactive protein (CRP) levels with the incidence of venous thromboembolism (VTE), hospital mortality, and costs among inpatients with COVID-19. METHODS: Data were extracted from electronic patient records and laboratory databases. Crude and adjusted associations for age, sex, number of comorbidities, Sequential Organ Failure Assessment score at admission, and D-dimer or CRP logistic regression models were used to evaluate associations. RESULTS: Between March and June 2020, COVID-19 was documented in 3,254 inpatients. The D-dimer level ≥4,000 ng/mL fibrinogen equivalent unit (FEU) mortality odds ratio (OR) was 4.48 (adjusted OR: 1.97). The CRP level ≥220 mg/dL OR for death was 7.73 (adjusted OR: 3.93). The D-dimer level ≥4,000 ng/mL FEU VTE OR was 3.96 (adjusted OR: 3.26). The CRP level ≥220 mg/dL OR for VTE was 2.71 (adjusted OR: 1.92). All these analyses were statistically significant (p<0.001). Stratified hospital costs demonstrated a dose-response pattern. Adjusted D-dimer and CRP levels were associated with higher mortality and doubled hospital costs. In the first week, elevated D-dimer levels predicted VTE occurrence and systemic inflammatory harm, while CRP was a hospital mortality predictor. CONCLUSION: D-dimer and CRP levels were associated with higher hospital mortality and a higher incidence of VTE. D-dimer was more strongly associated with VTE, although its discriminative ability was poor, while CRP was a stronger predictor of hospital mortality. Their use outside the usual indications should not be modified and should be discouraged.

https://doi.org/10.6061/clinics/2021/e3547

COMVC-19: A Program to protect healthcare workers’ mental health during the COVID-19 Pandemic. What we have learned
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Fukuti, Pedro

; Uchôa, Caroline Louise Mesquita

; Mazzoco, Marina Flaborea

; Cruz, Isabella D'Andrea Garcia da

; Echegaray, Mariana V.F.

; Humes, Eduardo de Castro

; Silveira, Júlia Belizário

; Santi, Talita Di

; Miguel, Euripedes Constantino

; Corchs, Felipe

; Fatori, Daniel

; Campello, Guilherme

; Oliveira, Gabriel M. de

; Argolo, Felipe C.

; Ferreira, Felipe de M.

; Machado, Gustavo

; Argeu, Adriana

; Oliveira, Graça Maria Ramos de

; Serafim, Antônio de Pádua

; Siqueira, Luciana de Lima

; Rossi, Luciane de

; Rios, Izabel Cristina

; Oliveira, Talita Rodrigues de

; Antoniazzi, Leilane C. K.

; Gagliotti, Daniel Augusto Mori

; Abelama Neto, Emílio

; Oliveira Junior, Paulo Novais de

; Correia, Aline Villalobo

; Gonçalves, Luca Schilling

; Tortato, Liana Silva

; Busato, Wagner Machado Moraes

; Guimarães-Fernandes, Flávio

; Alves, Marcos

; Leite Netto, Oswaldo Ferreira

; Schoueri, Patrícia de Campos Lindenberg

; Roque, Márcio de Assis

; Merlin, Silvia Stahl

; Boer, Giovana Cardoso Machado

; Sallet, Paulo Clemente

; Malbergier, André

; Spedo, Mariana Abrahão

; Kamitsuji, Carla Satie

; Faria, Elizabeth de

; Moreira, Moacyr Vergara de Godoy

; Kaufman, Arthur

; Abdo, Carmita

; Scanavino, Marco de Tubino

; Lancman, Selma

; Tavares, Hermano

; Polanczyk, Guilherme

; Brunoni, André R.

; Forlenza, Orestes V.

; Barros-Filho, Tarcísio Eloy Pessoa de

Clinics

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2021, Volume 76 elocation e2631

Abstract: En | Text: En | PDF: En

OBJECTIVE: In 2020, the COVID-19 pandemic brought a work and stress overload to healthcare workers, increasing their vulnerability to mental health impairments. In response, the authors created the COMVC-19 program. The program offered preventive actions and mental health treatment for the 22,000 workers of The Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP). This paper aims to describe its implementation and share what we have learned from this experience. METHODS: Workers were able to easily access the program through a 24/7 hotline. Additionally, a mobile phone app that screened for signs and symptoms of emotional distress and offered psychoeducation and/or referral to treatment was made available. Data from both these sources as well as any subsequent psychiatric evaluations were collected. RESULTS: The first 20 weeks of our project revealed that most participants were female, and part of the nursing staff working directly with COVID-19 patients. The most frequently reported symptoms were: anxiety, depression and sleep disturbances. The most common diagnoses were Adjustment, Anxiety, and Mood disorders. CONCLUSIONS: Implementing a mental health program in a multimodal intervention was feasible in a major quaternary public hospital. Our data also suggests that preventive actions should primarily be aimed at anxiety and depression symptoms, with a particular focus on the nursing staff.

https://doi.org/10.6061/clinics/2021/e2631

Holocene history of a lake filling and vegetation dynamics of the Serra Sul dos Carajás, southeast Amazonia
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GUIMARÃES, JOSÉ T.F.

; SAHOO, PRAFULLA K.

; SOUZA-FILHO, PEDRO W.M.

; FIGUEIREDO, MARIANA M.J. COSTA DE

; REIS, LUIZA S.

; SILVA, MARCIO S. DA

; RODRIGUES, TARCÍSIO M.

Anais da Academia Brasileira de Ciências

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2019, Volume 91 elocation e20160916

Abstract: En | Text: En | PDF: En

ABSTRACT Down-core changes in sedimentary facies, elemental geochemistry, pollen, spore, δ13C, δ15N and radiocarbon records from a filled lake, named R4, of the Serra Sul dos Carajás were used to study the relationship between the paleomorphological and paleoecological processes and their significance for Holocene paleoclimatology of the southeast Amazonia. The sediment deposition of the R4 lake started around 9500 cal yr BP. Increase of detrital components from 9500 to 7000 cal yr BP suggests high weathering of surrounding catchment rocks and soils, and deposition into the lake basin under mudflows. At that time, montane savanna and forest formation were already established suggesting predominance of wet climate. However, from 7000 to 3000 cal yr BP, a decline of detrital input occurred. Also, forest formation and pteridophytes were declined, while palms and macrophytes were remained relatively stable, indicating that water levels of the lake is likely dropped allowing the development of plants adapted to subaerial condition under drier climate conditions. After 3000 cal yr BP, eutrophication and low accommodation space lead to high lake productivity and the final stage of the lake filling respectively, and forest formation may has acquired its current structure, which suggests return of wetter climate conditions.

https://doi.org/10.1590/0001-3765201720160916 1289 downloads

Morphology and morphometry of upland lakes over lateritic crust, Serra dos Carajás, southeastern Amazon region
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SILVA, MARCIO S. DA

; GUIMARÃES, JOSÉ T.F.

; SOUZA FILHO, PEDRO W.M.

; NASCIMENTO JÚNIOR, WILSON

; SAHOO, PRAFULLA K.

; COSTA, FRANCISCO R. DA

; SILVA JÚNIOR, RENATO O.

; RODRIGUES, TARCÍSIO M.

; COSTA, MARLENE F. DA

Anais da Academia Brasileira de Ciências

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apr 2018, Volume 90 N. 2 Pages 1309 - 1325

Abstract: En | Text: En | PDF: En

ABSTRACT High-resolution satellite images, digital elevation models, bathymetric and sedimentological surveys coupled with statistical analysis were used to understand the physical environment and discuss their influence on water quality of the five upland lakes of Serra Sul dos Carajás, southeast Amazonia. The lakes have mid-altitude ranges (elevation), very small (catchment) and shallow to very shallow (central basins). Based on the length, area and volume, Violão and TI (Três Irmãs)-3 lakes may present large vertical movements of the water due to wind action and weakly stratified waters. Trophic conditions based on depth and shore development (Ld) parameters must be used with caution, since Amendoim Lake is relatively deep, but it is oligotrophic to ultra-oligotrophic. Ld values suggest that the lakes are circular to subcircular and are likely formed by solution process, as also suggested by volume development. TI-2 Lake is only presenting convex central basin and has highest dynamic ratio (DR), thus it may have high sedimentation and erosion rates. Based on the relationship between studied parameters, morphometric index and DR likely influence temperature and dissolved oxygen of waters of TI-2 Lake due to its depth profile and wind-induced surface mixing. Nevertheless, water quality parameters are controlled by catchment characteristics of the lakes.

https://doi.org/10.1590/0001-3765201820170349 1382 downloads

Influence of seasonal variation on the hydro-biogeochemical characteristics of two upland lakes in the Southeastern Amazon, Brazil
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SAHOO, PRAFULLA K.

; GUIMARÃES, JOSÉ T.F.

; SOUZA-FILHO, PEDRO W.M.

; SILVA, MARCIO S. DA

; SILVA JÚNIOR, RENATO O.

; PESSIM, GUSTAVO

; MORAES, BERGSON C. DE

; PESSOA, PAULO F.P.

; RODRIGUES, TARCÍSIO M.

; COSTA, MARLENE F. DA

; DALL'AGNOL, ROBERTO

Anais da Academia Brasileira de Ciências

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dec 2016, Volume 88 N. 4 Pages 2211 - 2227

Abstract: En | Text: En | PDF: En

ABSTRACT Limnological characteristics of the Violão and Amendoim lakes, in the Serra dos Carajás, Amazon, were studied interannually (2013-2014). Climate data indicate anomalous conditions during the 2013 rainy period with higher rainfall and lower temperature in the beginning (November). Lake levels were influenced after the first and second hour of each rainfall, which showed a strong synchronization between seasonal fluctuation of lake levels and local weather patterns. Based on the water quality, both lakes are classified as classes "1" and "2" in the CONAMA (Conselho Nacional do Meio Ambiente) scheme and as "excellent" to "good" in the WQI (Water Quality Index) categories. However, the limnology is distinctly different between the lakes and seasons. Higher trophic state and phytoplankton productivity were observed mainly during the rainy period in Violão Lake compared to Amendoim Lake. This may be due to deposition of leached nutrients in the former, mainly total phosphorus (TP), which was probably derived from mafic soils and guano. This is consistent with the significant positive correlation between Chlorophyll-a and TP at the end of the rainy period (March-April), whereas this was not observed in the beginning (November). This could possibly be a consequence of the more intense cloud cover, and unusual high rainfall that limits nutrient availability.

https://doi.org/10.1590/0001-3765201620160354 2359 downloads

Projeto de aterramento para sistema monofilar com retorno pelo terra
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Bertolo, Humberto C

; Oliveira Filho, Delly

; Pizziolo, Tarcísio A

; Rodrigues, Denilson E

; Monteiro, Paulo M. B

; Xavier, Gustavo A

Revista Brasileira de Engenharia Agrícola e Ambiental

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feb 2011, Volume 15 N. 2 Pages 205 - 210

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

Este trabalho apresenta o projeto de aterramento elétrico para Sistema Monofilar com Retorno pela Terra (MRT), em solicitações de baixas frequências, utilizando-se o método das imagens e considerando a simplificação do método dos potenciais constantes. Simulou-se o comportamento de três diferentes configurações de aterramento: hastes em triângulo, em quadrado vazio e para nove hastes, formando uma malha com quatro quadrados. A partir da simulação obtiveram-se o valor da resistência de aterramento para cada configuração e os potenciais gerados na superfície do solo. Com base nesses resultados foi possível comparar os valores tabelados para resistências mínimas, em função da potência do transformador, aplicados para diferentes concessionárias de energia que utilizam o Sistema MRT, com os valores calculados que mantêm os potenciais no solo em níveis seguros para seres humanos e animais. Os resultados mostraram que é possível utilizar aterramentos mais simples e mais baratos, pois os gradientes de tensões no solo se mantiveram em níveis seguros.

This work presents a grounding project for a Single Wire Earth Return (SWER) system in low frequency applications, through the use of the image method, a simplification of the constant potential method. The responses of three different grounding configurations were simulated: electrodes in triangular format, electrodes placed in the corners of a square and nine electrodes placed in the corners of a grid with four squares. With the mentioned simulation it was possible to calculate the ground resistance and the surface voltage of each configuration. Based on these results, it was possible to compare the values for minimal resistance, depending on the power of the transformer, applied to various power utilities that use the SWER system with the values that hold the potential in the soil at safe levels for human beings and animals. Results showed that it is possible to use simpler and cheaper grounding configurations due to the fact that the surface voltages were maintained at safe levels.

6847 downloads

Desenvolvimento e migração de larvas infectantes de ciatostomíneos (Nematoda: Cyathostominae) em gramínea coast cross (Cynodon dactylon) em clima tropical, na Baixada Fluminense, RJ, Brasil
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Couto, Melissa C. M. do

; Quinelato, Simone

; Souza, Tarcísio M. de

; Santos, Claudia Navarro dos

; Bevilaqua, Cláudia Maria L.

; Anjos, Débora H. da S.

; Sampaio, Ivan B. M.

; Rodrigues, Maria de Lurdes de A.

Revista Brasileira de Parasitologia Veterinária

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jun 2009, Volume 18 N. 2 Pages 31 - 37

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

Esse estudo foi realizado no período de julho de 2003 a novembro de 2004, para avaliar o desenvolvimento, a sobrevivência, a migração das larvas infectantes em gramínea "coast cross" (Cynodon dactylon) e o horário de maior disponibilidade, em condições de clima tropical, na Baixada Fluminense, RJ, Brasil. De julho de 2003 a setembro de 2004, massas fecais de equinos naturalmente infectados foram depositadas mensalmente sobre a gramínea. Sete dias após, amostras de fezes e gramínea foram coletadas semanalmente em diferentes horários (8, 13 e 17 horas), pesadas e processadas pela técnica de Baermann. O desenvolvimento, a sobrevivência e a migração das larvas infectantes nas fezes e na gramínea foram observados durante todo o período. A sobrevivência das L3 foi de até 15 semanas nas fezes e 12 semanas na gramínea no período seco e de nove e oito semanas, respectivamente, para o período chuvoso. No período chuvoso, maior número de L3 foi recuperado nas fezes e, no período seco, na gramínea. Condições climáticas influenciaram diretamente o número larvas infectantes. Pela análise multivariada, ficou demonstrado uma forte relação entre o tempo e o número de L3 nas fezes, sendo esta relação menos acentuada para a gramínea. Não se observou diferença significativa entre os horários de coleta.

A study following the development and migration of Cyathostominae infective larvae was conducted from July 2003 to November 2004 in tropical climate, Baixada Fluminense, RJ, Brazil. Samples of naturally infected feces were placed on 12 m² plot each month on a cyathostomin-free "Bermuda grass" pasture (Cynodon dactylon). After Seven days, samples of feces and grass were collected every week at 8 a.m, 1 and 5 p.m., weighed and processed by Baermann technique. Higher survival of L3 was found at dry season, 15 and 12 weeks on feces and sward respectively, at rainy season the survival was smaller. The multivariable analysis of main components was evident the influence of time and environment variables on L3 recovery from feces and grass. Close relationship between time and the number of L3 in feces could be noted, in contrast with L3 in sward. The climatic conditions influenced directly the number of infective larvae. The infective larvae were recovered during three times and the Kruskal-Wallis test did not present significance among them.

https://doi.org/10.4322/rbpv.01802007 2548 downloads

10.

Ciatostomíneos (Strongylidae-Cyathostominae) parásitas de cávalos: Ecología experimental dos estágios pré-parasíticos em gramínea tifton 85 (Cynodon spp. cv. Tifton 85) na baixada Fluminense, RJ, Brasil
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BEZERRA, SIMONE Q

; MACHADO DO COUTO, MELISSA C

; MOURA DE SOUZA, TARCÍSIO

; BEVILAQUA, CLAUDIA M. L.

; DA SILVA ANJOS, DÉBORA H

; MACHADO SAMPAIO, IVAN B

; RODRIGUES, E MARIA L. A.

Parasitología latinoamericana

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jun 2007, Volume 62 N. 1-2 Pages 27 - 34

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

Distribution, longevity and migration of Cyathostominae free living stages have been studied in differents types of climate in the World. Few works exist on this subject in South America. The objective of this research was evaluating survival and migration in Tifton 85 (Cynodon spp. cv. Tifton 85) sward in tropical climate. Fecal plots were monthly placed on pasture Tifton, from September of 2003 to September of 2004. Sward and faeces were collected weekly, at 8 a.m., 1 and 5 p.m. and processed by Baermann technique. L3survival on faeces varied from four to nine weeks in rainy period and from eight to 15 weeks in dry period, with higher recovered in rainy period. In the pasture,larvae longevity varied from two to eight weeks in rainy period and from five to 13 weeks in dry period, with higher L3 recovery in dry period. The multivariable weeks in dry period, with higher L3 recovery in dry period. The multivariable analysis of main components evidenced the influence of time and environmental variables on the number of recovered larvae from faeces and pasture. Climatic conditions influenced the development, survival and migration of infective larvae. L3 were recovered during the three times of collection and no significant difference was observed among three times. The study results demonstrated that in tropical climate conditions Cyathostominae L3 are available on faeces and pasture during whole months of the year

A distribuicao, longevidade e migracao de larvas infectantes de ciatostomíneos de equinos vem sendo estudada em diferentes tipos de clima no Mundo. Poucos trabalhos existem sobre este tema na América do Sul. O objetivo do presente estudo foi avahar a sobrevivencia e a migracao em gramínea Tifton 85 (Cynodon spp. cv.Tifton 85) sob condicoes de clima tropical. Massas fecais foram depositadas mensalmente na gramínea Tifton, no período de Setembro de 2003 a Setembro de 2004.Gramínea e fezes foram coletadas a cada sete dias, as 8, 12 e 17 h e processadas pela técnica de Baermann para recuperacao de L3. Ñas fezes, a sobrevivencia das L3 variou de quatro a nove semanas no período chuvoso e oito a 15 semanas no período seco, com maior recuperacao durante o período chuvoso. Na gramínea, a longevidade das larvas variou de duas a oito semanas no período chuvoso e cinco a 13 semanas no período seco, com maior recuperacao das larvas infectantes no período seco. A análise multivariada de componentes principáis evidenciou a influencia do tempo e das variáveis ambientáis sobre o número de larvas recuperadas das fezes e da gramínea. As condicoes climáticas influenciaram no desenvolvimento, na sobrevivencia e migracao das larvas infectantes. As L3 foram recuperadas durante os tres horarios de coleta e nao se observou diferenca significativa entre os horarios. Os resultados do estudo demonstraram que em condicoes de clima tropical as L3 de ciatostomíneos estáo disponíveis ñas fezes e na pastagem, durante todo os meses do ano

4951 downloads

11.

Diretrizes para Avaliação e Tratamento de Pacientes com Arritmias Cardíacas
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Feitosa, Gilson Soares

; Nicolau, José Carlos

; Lorga, Adalberto

; Lorga Filho, Adalberto

; D'Ávila, André

; Rassi Jr, Anis

; Paola, Angelo A. V. de

; Pedrosa, Anísio

; Costa, Álvaro Barros da

; Peres, Ayrton

; Grupi, César

; Cirenza, Cláudio

; Moreira, Dalmo

; Sobral, Dário

; Hachul, Denise

; D'Andréa, Eduardo

; Sosa, Eduardo

; God, Epotamênides M. Good

; Brito, Fábio Sândoli de

; Cruz, Fernando

; Fenelon, Guilherme

; Lima, Gustavo Glotz

; Brito, Hélio

; Maia, Ivan G.

; Atié, Jacob

; Jorge, José Carlos Moura

; Andrade, José Carlos de

; Mateos, José Carlos Pachón

; Ribeiro, José Carlos

; Pimenta, João

; Vasconcelos, José Tarcísio de

; Gizzi, Júlio

; Zimerman, Leandro

; Castilho, Luiz Antonio Teno

; Fagundes, Márcio

; Figueiredo, Márcio

; Martinelli Filho, Martino

; Scanavacca, Maurício I.

; Valente, Ney

; Medeiros, Paulo

; Brofman, Paulo

; Miranda, Reynaldo Castro

; Costa, Roberto

; Kunyioshi, Ricardo

; Sá, Roberto

; Rassi, Sérgio G.

; Siqueira, Sérgio

; Galvão, Silas

; Nishioka, Silvana

; Grillo, Tereza

; Rodrigues, Thiago da Rocha

; Maciel, Washington

Arquivos Brasileiros de Cardiologia

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2002, Volume 79 Suppl. 5 Pages 1 - 50

Abstract: Pt | Text: Pt | PDF: Pt

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