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Abstract This study's objective was to evaluate the effect of storage time (-18 ± 1 °C/60 days) under colorimetric, physicochemical, and lipid oxidation parameters in sheep meat sausages with oil pre-emulsified linseed to replace animal fat. Five formulations have been developed; the control sausage (0%) and four fat replacement levels with pre-emulsified linseed oil: 10, 20, 30, and 40%. Color analysis s (L *, a * and b *), determination of the total colorimetric difference (CD), water activity (Aw), pH, moisture, water retention capacity (WRC), and lipid oxidation through the number of substances reactive to thiobarbituric acid (TBARS), where all analysis were determined at intervals of 0, 20, 40 and 60 days of storage. The treatment, the storage time, and the interaction between these factors significantly affected (P < .0001) most of the studied parameters. The TBARS values were affected by the treatment (P < .0001) and by the storage days (P < .0001), with an interaction between these factors (P < .0001). However, it is suggested that the replacement of animal fat with pre-emulsified linseed oil was a viable strategy without causing detrimental effects on the product's quality during the storage period.

https://doi.org/10.1590/fst.24721

Saúde Cardiovascular e Fibrilação ou Flutter Atrial: Um Estudo Transversal do ELSA-Brasil
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Santos, Itamar S.

; Lotufo, Paulo A.

; Goulart, Alessandra C.

; Brant, Luisa C. C.

; Pinto Filho, Marcelo M

; Pereira, Alexandre C.

; Barreto, Sandhi M.

; Ribeiro, Antonio L. P.

; Thomas, G Neil

; Lip, Gregory Y. H.

; Bensenor, Isabela M.

; Arasalingam, Ajini

; Beane, Abi

; Bensenor, Isabela M

; Brocklehurst, Peter

; Cheng, Kar Keung

; El-Bouri, Wahbi

; Feng, Mei

; Goulart, Alessandra C

; Greenfield, Sheila

; Guo, Yutao

; Guruparan, Mahesan

; Gusso, Gustavo

; Gooden, Tiffany E

; Haniffa, Rashan

; Humphreys, Lindsey

; Jolly, Kate

; Jowett, Sue

; Kumarendran, Balachandran

; Lancashire, Emma

; Lane, Deirdre A

; Li, Xuewen

; Lip (Co-PI), Gregory Y.H.

; Li, Yan-guang

; Lobban, Trudie

; Lotufo, Paulo A

; Manseki-Holland, Semira

; Moore, David J

; Nirantharakumar, Krishnarajah

; Olmos, Rodrigo D

; Paschoal, Elisabete

; Pirasanth, Paskaran

; Powsiga, Uruthirakumar

; Romagnolli, Carla

; Santos, Itamar S

; Shantsila, Alena

; Sheron, Vethanayagam Antony

; Shribavan, Kanesamoorthy

; Szmigin, Isabelle

; Subaschandren, Kumaran

; Surenthirakumaran, Rajendra

; Tai, Meihui

; Neil Thomas (Co-PI), G

; Varella, Ana C

; Wang, Hao

; Wang, Jingya

; Zhang, Hui

; Zhong, Jiaoyue

Arquivos Brasileiros de Cardiologia

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2022, Nº ahead

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Fundamento A associação entre o status de saúde cardiovascular ideal ( ideal cardiovascular health ( ICVH) e diagnóstico de fibrilação ou flutter atrial (FFA) foi menos estudado em comparação a outras doenças cardiovasculares. Objetivos Analisar a associação entre o diagnóstico de FFA e métricas e escores de ICVH no Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil). Métodos Este estudo analisou dados de 13141 participantes com dados completos. Os traçados eletrocardiográficos foram codificados de acordo com o Sistema de Minnesota, em um centro de leitura centralizado. As métricas do ICVH (dieta, atividade física, índice de massa corporal, tabagismo, glicemia de jeju, e colesterol total) e escores do ICVH foram calculados conforme proposto pela American Heart Association . Modelos de regressão logística bruta e ajustada foram construídos para analisar associações de métricas e escores do ICVH com diagnóstico de FFA. O nível de significância foi estabelecido em 0,05. Resultados A idade mediana da amostra foi de 55 anos, e 54,4% eram mulheres. Nos modelos ajustados, os escores de ICVH não apresentaram associação significativa com diagnóstico de FFA prevalente [odds ratio (OR):0,96; intervalo de confiança de 95% (IC95%):0,80-1,16; p=0,70). Perfis de pressão arterial ideal (OR:0,33; IC95%:0,1-0,74; p=0,007) e colesterol total ideal (OR:1,88; IC95%:1,19-2,98; p=0,007) foram significativamente associados com o diagnóstico de FFA. Conclusões Não foram identificadas associações significativas entre escores de ICVH global e diagnóstico de FFA após ajuste multivariado em nossas análises, devido, ao menos em parte, às associações antagônicas da FFA com métricas de pressão arterial e de colesterol total do ICVH. Nossos resultados sugerem que estimar a prevenção da FFA por meio de escore de ICVH global pode não ser adequado, e as métricas do ICVH devem ser consideradas separadamente.

Abstract Background The association between ideal cardiovascular health (ICVH) status and atrial fibrillation or flutter (AFF) diagnosis has been less studied compared to other cardiovascular diseases. Objective To analyze the association between AFF diagnosis and ICVH metrics and scores in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Methods This study analyzed data from 13,141 participants with complete data. Electrocardiographic tracings were coded according to the Minnesota Coding System, in a centralized reading center. ICVH metrics (diet, physical activity, body mass index, smoking, blood pressure, fasting plasma glucose, and total cholesterol) and scores were calculated as proposed by the American Heart Association. Crude and adjusted binary logistic regression models were built to analyze the association of ICVH metrics and scores with AFF diagnosis. Significance level was set at 0.05. Results The sample had a median age of 55 years and 54.4% were women. In adjusted models, ICVH scores were not significantly associated with prevalent AFF diagnosis (odds ratio [OR]:0.96; 95% confidence interval [95% CI]:0.80-1.16; p=0.70). Ideal blood pressure (OR:0.33; 95% CI:0.15–0.74; p=0.007) and total cholesterol (OR:1.88; 95% CI:1.19–2.98; p=0.007) profiles were significantly associated with AFF diagnosis. Conclusions No significant associations were identified between global ICVH scores and AFF diagnosis after multivariable adjustment in our analyses, at least partially due to the antagonistic associations of AFF with blood pressure and total cholesterol ICVH metrics. Our results suggest that estimating the prevention of AFF burden using global ICVH scores may not be adequate, and ICVH metrics should be considered in separate.

https://doi.org/10.36660/abc.20210970

Can the silane heat treatment influence the bond durability between resin cements and a dental ceramic?
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CARVALHO, Ronaldo Luís Almeida de

; MIRANDA, Jean Soares

; CARVALHO, Rodrigo Furtado de

; DUARTE, Michelly Rocha

; KIMPARA, Estevão Tomomitsu

; OZCAN, Mutlu

; LEITE, Fabíola Pessôa Pereira

RGO - Revista Gaúcha de Odontologia

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2020, Volume 68 elocation e20200001

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Objetivo Avaliar a influência do tratamento térmico do silano na resistência de união entre dois cimentos resinosos e uma cerâmica feldspática CAD/CAM. Métodos Quarenta blocos cerâmicos foram duplicados em resina micro-híbrida. Todas as cerâmicas foram condicionadas com ácido fluorídrico 10% por 20 s e receberam aplicação do silano. Os blocos foram randomizados em oito grupos (n = 5): P-Panavia F; PAg- Panavia F + Envelhecimento; HP-Tratamento térmico + Panavia F;HPAg-Tratamento térmico + Panavia F + Envelhecimento; R-RelyX ARC; RAg-RelyX ARC; HR-Tratamento térmico + RelyX ARC; HRAg - Tratamento térmico + RelyX ARC + Envelhecimento. O tratamento térmico foi realizado em forno a 100 °C durante2 min. Todos os blocos foram cimentados e cortados para obter amostras para microtração. Foram feitos 10000 ciclos térmicos. As amostras foram submetidas a teste de micro-tração. Resultados O teste ANOVA revelou uma interação significativa entre cimento/tratamento térmico (p=0,001) e tratamento térmico/ciclo térmico (p=0,001). Conclusão Dessa maneira, o tratamentotérmico do silano a 100ºC por 2 minutos foi capaz de aumentar a resistência de união entre o cimento resinoso e uma cerâmica feldspática mesmo após o envelhecimento.

ABSTRACT Objective Evaluate the influence of silane heat treatment in bond durability between two resin cements and CAD/CAM feldspathic ceramic. Methods 40 feldspathic ceramic blocks were obtained, and were duplicated in microhybrid composite. All ceramic blocks were etched with 10% hydrofluoric acid for 20 s and received application of silane agent. The blocks were randomizedinto eight groups (n=5) according to the surface treatments and luting agents: P- Panavia F; PAg- Panavia F + Aging; HP- Heat Treatment + Panavia F; HPAg- Heat Treatment + Panavia F + Aging; R- RelyX ARC; Rag- RelyX ARC + Aging; HR- Heat Treatment + RelyX ARC; HRAg- Heat Treatment + RelyX ARC + Aging. The heat treatment was performed in furnace at 100 °C for 2 min. All blocks were cemented and cut to obtain samples with adhesive area of 1 mm2. Aging was performed with 10000 thermal cycles. The samples were subjected to microtensile bond strength test. Results The three-way ANOVA test revealed a significant interaction between cement versus heat treatment (p=0.001) and heat treatment versus thermal cycling (p=0.001) indicating that there was a change in bond strength due to surface treatment and aging. Conclusion Therefore, the heat treatment of the silane at 100 ºC for 2 minutes obtained higher values of bond strength between the resin cement and a feldspathic ceramicafter aging.

https://doi.org/10.1590/1981-86372020000012019-0002 1254 downloads

The effect of 10 weeks of strength training on the electromyographic response of quadriceps portions
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Tourino, Frank Douglas

; Lacerda, Lucas Túlio de

; Andrade, André Gustavo Pereira de

; Diniz, Rodrigo César Ribeiro

; Chagas, Mauro Heleno

; Lima, Fernando Vitor

Revista Brasileira de Cineantropometria & Desempenho Humano

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2020, Volume 22 elocation e65225

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Este estudo investigou o efeito de 10 semanas de treinamento de força na resposta eletromiográfica (EMG) do vasto medial, vasto lateral e reto femoral. 23 voluntárias executaram 3 a 5 séries de 6 repetições, intensidade de 50% de 1 repetição máxima (RM), 3 minutos de pausa entre as séries e duração da repetição de 6 s no exercício extensor de joelhos. Um grupo (5:1) realizou a duração da ação concêntrica em 5 s e excêntrica em 1s e outro grupo (3:3) realizou a concêntrica em 3s e a excêntrica em 3s. A atividades EMG (RMS) destas três porções do quadríceps foram registradas em cada repetição das 3 séries da primeira sessão de treinamento e nas três primeiras séries da última sessão. Os resultados mostraram diferenças na metade final das séries, sendo que no grupo 5:1 houve redução na EMG em todas as porções e o VL e o RF mostraram redução em um número maior de repetições. No grupo 3:3 o VM e o RF apresentaram redução. Para as relações de ativação entre as porções, diferenças foram identificadas apenas no grupo 3:3 nas relações VM/VL e VM/RF em um número reduzido de repetições. Estes resultados apontam que a coordenação entre as porções sofreu poucas alterações quando comparadas as repetições equivalentes de cada série. Sugere-se que os reduzidos graus de liberdade do movimento utilizado e a progressão da carga de treinamento tenham sido os fatores que conduziram a este resultado

Abstract This study investigate the effect of 10-week strenght training on the amplitude of the electromyographic (EMG) signal of vastus medialis, vastus lateralis and rectus Femoris. Twenty three untrained volunteers performed 3-5 sets (3 sets - weeks 1 and 2; 4 series - weeks 3 and 4; 5 series weeks 5 to 10) with 6 repetitions, intensity of 50% of 1 repetition maximum (1RM), 3 min rest between sets and 6 s repetition duration at the knee extensor exercise. One group (5:1) performed concentric action of 5 s and eccentric of 1 s and the other (3:3) performed concentric of 3 s and eccentric of 3 s. The VM, VL and RF EMG (RMS) activities were recorded in each repetition of the three series at the first training session and the first three series at the last session. The protocol 5:1 led to EMG reduction in all portions, with a greater number of repetitions presenting differences at the VL and RF. VM and RF presented similar results at Group 3:3. It was verified that all the differences occurred in the second half of the series. It was also verified differences in EMG ratios just in group 3:3 and only in VM/VL and VM/RF. These results suggest that the coordination was not affected when equivalent repetitions of series were compared. It was also suggested that these results were influenced by the reduced degrees of freedom of the exercise and the training load progression adopted.

https://doi.org/10.1590/1980-0037.2020v22e65225 595 downloads

Effect of different surface treatments and multimode adhesive application on the Weibull characteristics, wettability, surface topography and adhesion to CAD/CAM lithium disilicate ceramic
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Souza, Karina Barbosa

; Moura, Dayanne Monielle Duarte

; Silva, Sarah Emille Gomes da

; Araújo, Gabriela Monteiro de

; Pinto, Rafael de Almeida Spinelli

; Leite, Fabíola Pessôa Pereira

; Özcan, Mutlu

; Souza, Rodrigo Othávio de Assunção e

Journal of Applied Oral Science

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2020, Volume 28 elocation e20200122

Resumo: En | Texto: En | PDF: En

Abstract This paper aims to evaluate the effect of different surface treatments on surface topography, wettability, and shear bond strength of resin cement to glass ceramic. Methodology: For SBS test, 32 blocks (7x7x2 mm) of lithium disilicate were obtained and randomly divided into eight groups (four blocks per group) according to each surface treatment (HF 20 s, 60 s, 120 s + silanization/S or Scotch Bond Universal/ SBU) and the Monobond Etch & Prime - MEP application followed or not by SBU. On each treated surface ceramic block, up to four dual-curing resin cement cylinders were prepared and light-cured for 40s (N=120/n=15). The specimens were thermocycled (10,000 cycles, 5-55°C, 30 s) and the SBS test (50KgF, 0.5 mm/min) was performed. Furthermore, failure analysis, wettability, AFM, and SEM were carried out. SBS data (MPa) were analyzed using Student's t-test, two-way ANOVA, Tukey's test (5%) and Weibull's analysis. Results: For HF experimental groups, two-way ANOVA presented the factors “etching time” and “bonding agent” as significant (p<0.05). After silane application, the HF groups presented similar bond strength. SBU application compromised the SBS, except for 120s etching time (HF120sS: 23.39ᵃ±6.48 MPa; HF120sSBU: 18.76ᵃ±8.81MPa). For MEP groups, SBU application did not significantly affect the results (p=0.41). The MEP group presented the highest Weibull modulus (4.08A) and they were statistically different exclusively from the HF20sSBU (0.58B). Conclusion: The HF 20s, 60s, 120 s followed by silane, promoted similar resin-bond strength to ceramic and the SBU application after HF or MEP did not increase the SBS.

https://doi.org/10.1590/1678-7757-2020-0122 822 downloads

Estimates of genetic parameters, genetic variability, and selection in the S1 generation of peach
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Silva, José Osmar da Costa e

; Bruckner, Claudio Horst

; Carneiro, Pedro Crescêncio Souza

; Resende, Marcos Deon Vilela de

; Alves, Rodrigo Silva

; Silva, Danielle Fabíola Pereira da

Ciência Rural

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2020, Volume 50 Nº 10 elocation e20190976

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: O cultivo do pessegueiro em regiões de inverno ameno é viabilizado pela utilização de genótipos que apresentam baixa necessidade de frio, sendo este um dos principais objetivos do melhoramento para essas regiões. Assim, os objetivos deste estudo foram estimar parâmetros genéticos, avaliar a variabilidade genética e selecionar famílias adaptadas a regiões de inverno ameno em geração S1 de pessegueiros via metodologia de modelos mistos (REML/BLUP). Para isso, 22 populações, 84 famílias e 2090 indivíduos foram avaliados quanto as características: taxa de brotação (TB), densidade de nós (DN), altura da planta (AP) e diâmetro do tronco (DT). Verificou-se variabilidade genética para todas as características. As herdabilidades individuais no sentido amplo foram de baixa e média magnitudes. A característica AP apresentou correlação genética positiva de magnitude elevada com DT. A característica DN apresentou correlação genética negativa moderada com AP e DT. O agrupamento pelo método de Tocher resultou na formação de seis grupos mutuamente excludentes. Considerando intensidade de seleção de 25%, a seleção simultânea para TB, DN e DT propiciou ganhos preditos de 11.3% para TB, 9.7% para DN, -14.2% para AP e -14.3% para DT, evidenciando o grande potencial do germoplasma avaliado.

ABSTRACT: The growing of peach in mild winter regions is made viable through the use of genotypes that have low need for cold conditions, and this is one of the main aims of breeding for these regions. Thus, the aims of this study were to estimate genetic parameters, evaluate genetic variability, and select families adapted to mild winter regions in the S1 generation of peach through mixed model methodology (REML/BLUP). For that purpose, 22 populations, 84 families, and 2090 individuals were evaluated for the following traits: bud burst rate (BR), node density (ND), plant height (PH), and trunk diameter (TD). Genetic variability was found for all the traits. Individual heritability in the broad sense was of low and medium magnitudes. The PH trait had positive genotypic correlation of high magnitude with TD. The ND trait had moderate negative genotypic correlation with PH and TD. Clustering by the Tocher method resulted in the formation of six mutually exclusive groups. Considering selection intensity of 25%, simultaneous selection for BR, ND, and TD led to predicted gains of 11.3% for BR, 9.7% for ND, -14.2% for PH, and -14.3% for TD, showing the great potential of the germplasm evaluated.

https://doi.org/10.1590/0103-8478cr20190976 685 downloads

Genetic divergence in basil cultivars and hybrids
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Alves, Rodrigo P

; Silva, Ana Veruska C

; Almeida-Pereira, Camila S

; Costa, Tatiana S

; Alvares-Carvalho, Sheila V

; Arrigoni-Blank, Maria de Fatima

; Blank, Arie F

Horticultura Brasileira

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Jun 2019, Volume 37 Nº 2 Páginas 180 - 187

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO O manjericão é uma erva aromática que se destaca por possuir importância econômica. É consumido in natura e também utilizado na obtenção de óleo essencial. O cultivo desta espécie em diversas regiões do mundo permitiu que surgissem variações mediante cruzamentos naturais e euploidia, ocasionando a ampla variabilidade genética existente. Considerando a importância desta espécie, este trabalho teve como objetivo analisar a diversidade genética de 27 genótipos de manjericão usando marcadores moleculares ISSR. Quatorze primers foram utilizados para amplificação do DNA, resultando em 86% de polimorfismo. Com base no índice de dissimilaridade de Jaccard, observou-se o maior índice (0,80) entre os indivíduos BAS001 e BAS012, enquanto que o menor índice de dissimilaridade (0,18) foi detectado entre os genótipos BAS014 e BAS015. A semelhança genética entre indivíduos foi calculada, formando quatro grupos distintos. A maioria dos indivíduos (40,7%) foi agrupada no grupo I. O conteúdo de informação polimórfica (PIC) (0,89) indicou níveis consideráveis de diversidade genética entre os genótipos. Neste sentido, os marcadores ISSR foram eficientes na detecção de polimorfismos entre os acessos e confirmaram que é possível inferir a variabilidade genética na coleção. Isso demonstra a importância do uso de marcadores moleculares e as vantagens que esta informação pode oferecer ao melhoramento genético das espécies.

ABSTRACT Basil is an aromatic herb that stands out for its economic importance. It is consumed in natura and used to obtain essential oil. The cultivation of this species in several regions of the world has allowed variations by natural crosses and euploidy, leading to the wide genetic variability found nowadays. Considering the importance of this species, we aimed to analyze the genetic diversity of 27 basil genotypes using ISSR molecular markers. Fourteen primers were employed for DNA amplification, resulting in 86% polymorphism. Based on the Jaccard’s dissimilarity index, the highest index (0.80) was observed between the individuals BAS001 and BAS012, while the lowest index (0.18) was detected between the genotypes BAS014 and BAS015. The genetic similarity among individuals was calculated, forming four distinct clusters. Most individuals (40.7%) were allocated in cluster I. The polymorphic information content (PIC) (0.89) indicated considerable levels of genetic diversity among genotypes. In this sense, the ISSR markers were efficient in the detection of polymorphisms between the accessions, suggesting the genetic variability of the collection. This result demonstrates the importance of the use of molecular markers and the advantages that this information provides to the breeding of the species.

https://doi.org/10.1590/s0102-053620190208 1042 downloads

Effect of hydrofluoric acid concentration and etching time on resin-bond strength to different glass ceramics
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Veríssimo, Aretha Heitor

; Moura, Dayanne Monielle Duarte

; Tribst, João Paulo Mendes

; Araújo, Arthur Magno Medeiros de

; Leite, Fabíola Pessôa Pereira

; Souza, Rodrigo Othávio de Assunção e

Brazilian Oral Research

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2019, Volume 33 elocation e041

Resumo: En | Texto: En | PDF: En

Abstract: The objective of this study was to evaluate the effect of the hydrofluoridric acid (HF) concentration and time of acid conditioning on bond strength of three glass ceramics to a resin cement. Thus, fifty blocks (10 mm x 5 mm x 2 mm) of each ceramic (LDCAD: IPS e.max CAD; LCAD: IPS Empress CAD and LDHP: IPS e.max Press) were made and embedded in acrylic resin. The surfaces were polished with sandpaper (#600, 800, 1000, and 1200 grits) and blocks were randomly divided into 15 groups (n = 10) according to the following factors: Concentration of HF (10% and 5%), conditioning time (20 s and 60 s) and ceramic (LDCAD, LDHP, and L). After conditioning, silane (Prosil / FGM) was applied and after 2 min, cylinders (Ø = 2 mm; h = 2 mm) of dual resin cement (AllCem / FGM) were made in the center of each block using a Teflon strip as matrix and light cured for 40 s (1,200 mW/cm2). Then, the samples were thermocycled (10,000 cycles, 5/55°C, 30s) and submitted to the shear bond test (50 KgF, 0.5 mm/min). The data (MPa) were analyzed with 3-way ANOVA and Tukey's test (5%). Failure analysis was performed using a stereomicroscope (20x) and a scanning electron microscope (SEM). ANOVA revealed that the “concentration” factor (p = 0.01) and the interaction “acid concentration X ceramic” (p = 0.009) had a significant effect, however, the “ceramic” (p = 0.897) and “conditioning time” (p = 0.260) factors did not influence the results. The LDHP10%60s (10.98 MPa)aA* group presented significantly higher bond strength than LDHP10%20s (6.57 MPa)bA, LCAD5%20s (6,90 ±3,5)aB and LDHP5%60s (5.66 ± 2,9MPa)aA* groups (Tukey). Failure analysis revealed that 100% of specimens had mixed failure. In conclusion, etching with 5% HF for 20 seconds is recommended for lithium disilicate and leucite-reinforced CAD/CAM ceramics. However, for pressed lithium disilicate ceramic, 10% HF for 60 s showed significantly higher bond strength to resin cement.

https://doi.org/10.1590/1807-3107bor-2019.vol33.0041 3381 downloads

Examining individual risk-taking in Leontopithecus caissara (Primates, Callitrichidae): group order when arriving at and departing from sleeping sites
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Moro-Rios, Rodrigo F

; Meyer, Andreas L. S

; Silva-Pereira, José E

; Ludwig, Gabriela

Mastozoología neotropical

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Dez 2018, Volume 25 Nº 2 Páginas 479 - 483

Resumo: Pt En Es | Texto: Pt En Es | PDF: Pt | PDF: En | PDF: Es

Grupos de primatas se deslocam em fila de maneira que cada indivíduo se encontra exposto a um risco de predação diferenciado de acordo com o lugar ocupado por ele. Nós registramos os eventos de chegada e saída do sítio de dormida de um grupo de Leontopithecus caissara de maneira a investigar quais indivíduos do grupo ocupam a posição de maior risco na fila. Nossos resultados demonstram o macho dominante como sendo o indivíduo a ocupar a posição de maior risco na maioria das ocasiões. Assim, o macho adulto dominante assumiu maiores riscos e um papel destacado no comportamento anti-predatório de maneira a criar benefícios diretos ao indivíduo subordinado que permaneceu no grupo em tal condição.

Monkey groups travel in line, exposing individuals to differential risks according to their position. We recorded events of arriving and departing from the sleeping site in a group of Leontopithecus caissara to investigate how the highest risk position is shared among group-mates during those events. We found the dominant male was the first to arrive and depart from the tree hole on most occasions. This finding suggests that the dominant adult male assumed higher risks and played a differential role in predator defense, possibly creating direct benefits for subordinate individuals to stay in the group.

133 downloads

10.

Silvicultural performance of five forest species in the central Brazilian Amazon
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MACHADO, Murilo Rezende

; CAMARA, Rodrigo

; SAMPAIO, Paulo de Tarso Barbosa

; FERRAZ, João Baptista Silva

; PEREIRA, Marcos Gervasio

Acta Amazonica

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Mar 2018, Volume 48 Nº 1 Páginas 10 - 17

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Plantios de espécies florestais de interesse madeireiro contribuem para diminuir a pressão sobre a floresta amazônica, proporcionam o desenvolvimento sustentável na região e geram benefícios ecológicos. Este estudo objetivou avaliar a sobrevivência e o crescimento de quatro espécies nativas (Swietenia macrophylla, Parkia decussata, Dipteryx odorata e Jacaranda copaia) e uma exótica (Acacia mangium), em plantios monoespecíficos (espaçamento de 2 x 2 m) estabelecidos em áreas anteriormente ocupadas por pastagem, em Itacoatiara, Amazonas. Aos quatro anos de idade, foram obtidos dados biométricos [diâmetro à altura de 1,30 m do solo (DBH, cm), área de projeção de copa (CPA, m2), altura total (Ht, m), volume comercial do cilindro (Vcyl, m3 ha-1)], e dados qualitativos obtidos por diagnose visual [taxa de sobrevivência (S; %), estado nutricional (NS, G: bom; D: deficiente; %) e estado fitossanitário (PS, S: satisfatório; NS: não-satisfatório; %). Para cada espécie considerou-se três parcelas de 128 m2, cada uma com 32 plantas. Jacaranda copaia, seguida de Dipteryx odorata e Parkia decussata, foram as espécies mais recomendadas para o plantio em áreas com condições edafoclimáticas semelhantes às do presente trabalho, devido ao seu melhor desempenho para a maioria das variáveis.

ABSTRACT Planting of forest species of timber interest helps to reduce the deforestation pressure on the Amazon forest, promotes sustainable development of the producing region and generates ecological benefits. The objective of this work was to evaluate the survival rate and growth of four native (Swietenia macrophylla, Parkia decussata, Dipteryx odorata and Jacaranda copaia) and one exotic (Acacia mangium) species in monospecific plantations (spacing of 2 x 2 m) established on areas previously used for grazing, in Itacoatiara, State of Amazonas, Brazil. When the trees were four years old, we collected biometric data [height at 1.30 m (DBH, cm), crown projection area (CPA, m2), total height (Ht, m), commercial cylinder volume (Vcyl, m3 ha-1)], and qualitative data from visual diagnosis [survival rate (S, %), nutritional status (NS, G = good, D = deficient, %), and phytosanitary status (PS, S = satisfactory, N = non-satisfactory, %)]. Three plots of 128 m2, with 32 plants each, were evaluated for each species. Jacaranda copaia, followed by Dipteryx odorata and Parkia decussata, were the recommended species for planting in areas with edaphoclimatic conditions similar to those of the present work, due to their better performance according to most of the variables.

https://doi.org/10.1590/1809-4392201700602 2070 downloads

11.

Association of different biomarkers of renal function with D-dimer levels in patients with type 1 diabetes mellitus (renal biomarkers and D-dimer in diabetes)
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Domingueti, Caroline Pereira

; Fóscolo, Rodrigo Bastos

; Dusse, Luci Maria S

; Reis, Janice Sepúlveda

; Carvalho, Maria das Graças

; Gomes, Karina Braga

; Fernandes, Ana Paula

Archives of Endocrinology and Metabolism

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Fev 2018, Volume 62 Nº 1 Páginas 27 - 33

Resumo: En | Texto: En | PDF: En

ABSTRACT Objective This study aimed to evaluate the association between different renal biomarkers with D-Dimer levels in diabetes mellitus (DM1) patients group classified as: low D-Dimer levels (< 318 ng/mL), which included first and second D-Dimer tertiles, and high D-Dimer levels (≥ 318 ng/mL), which included third D-Dimer tertile. Materials and methods D-Dimer and cystatin C were measured by ELISA. Creatinine and urea were determined by enzymatic method. Estimated glomerular filtration rate (eGFR) was calculated using CKD-EPI equation. Albuminuria was assessed by immunoturbidimetry. Presence of renal disease was evaluated using each renal biomarker: creatinine, urea, cystatin C, eGFR and albuminuria. Bivariate logistic regression analysis was performed to assess which renal biomarkers are associated with high D-Dimer levels and odds ratio was calculated. After, multivariate logistic regression analysis was performed to assess which renal biomarkers are associated with high D-Dimer levels (after adjusting for sex and age) and odds ratio was calculated. Results Cystatin C presented a better association [OR of 9.8 (3.8–25.5)] with high D-Dimer levels than albuminuria, creatinine, eGFR and urea [OR of 5.3 (2.2–12.9), 8.4 (2.5–25.4), 9.1 (2.6–31.4) and 3.5 (1.4–8.4), respectively] after adjusting for sex and age. All biomarkers showed a good association with D-Dimer levels, and consequently, with hypercoagulability status, and cystatin C showed the best association among them. Conclusion Therefore, cystatin C might be useful to detect patients with incipient diabetic kidney disease that present an increased risk of cardiovascular disease, contributing to an early adoption of reno and cardioprotective therapies.

https://doi.org/10.20945/2359-3997000000003 2038 downloads

12.

DETERMINAÇÃO DE ENXOFRE EM SHAMPOO POR ESPECTROFOTOMETRIA UV-VIS: AVALIAÇÃO DE MÉTODOS DE PREPARO DE AMOSTRAS
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Bielemann, Natalia J.

; Novo, Diogo L. R.

; Pereira, Rodrigo M.

; Mello, Julia E.

; Costa, Vanize C.

; Mesko, Marcia F.

Química Nova

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Ago 2017, Volume 40 Nº 7 Páginas 785 - 790

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Dry ashing, dissolution in aqueous medium or wet digestion methods were evaluated for sample preparation of shampoo for the subsequent indirect determination of sulfur by UV-Vis spectrophotometry. Among the sample preparation methods evaluated, microwave-assisted wet digestion using 7 mol L-1 HNO3 was the most suitable method for this purpose. Accuracy of the proposed method was evaluated by recovery test using standard solution, and the recovery was about 96%. Moreover, for comparison of results, S (as SO42-) was also determined by ion chromatography, after microwave-assisted wet digestion using concentrated HNO3, and no significant difference was observed between the obtained results (according to the t-test for a 95% confidence level, p = 0.288). Relative standard deviations were always lower than 10% and the limit of detection was 0.007% w/v. Finally, the proposed method was applied for analysis of sixteen shampoos used to many types of hair, from different brands produced in Brazil, and the concentration of S ranged from 0.78 to 2.82% w/v.

https://doi.org/10.21577/0100-4042.20170052 4854 downloads

13.

Correlations of some Neoproterozoic carbonate-dominated successions in South America based on high-resolution chemostratigraphy
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Sial, Alcides Nobrega

; Gaucher, Claudio

; Misi, Aroldo

; Boggiani, Paulo Cesar

; Alvarenga, Carlos José Souza de

; Ferreira, Valderez Pinto

; Pimentel, Marcio Martins

; Pedreira, José Augusto

; Warren, Lucas Verissimo

; Fernández-Ramírez, Rodrigo

; Geraldes, Mauro

; Pereira, Natan Silva

; Chiglino, Leticia

; Cezario, Wilker dos Santos

Brazilian Journal of Geology

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Set 2016, Volume 46 Nº 3 Páginas 439 - 488

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: Esta revisão incorpora novos dados isotópicos e químicos para correlação quimioestratigráfica de sucessões, predominantemente carbonáticas, na América do Sul (Argentina, Bolívia, Brasil, Paraguai e Uruguai). Estas sucessões, depositadas durante eventos de extensão, aparecem como espessos estratos carbonáticos/siliciclásticos em bacias epicontinentais ou foram acumulados sobre margens passivas em bordos de cratons (ex.: São Francisco, Amazonas, Bloco Rio Apa, Pampia e Río de La Plata) como três megasequências: glaciogênica, plataforma marinha carbonática (sobre diamictitos glacio-marinhos) e predominantemente continental siliciclástica. Em cinturões circunjacentes a cratons, sucessões carbonáticas contendo material vulcanoclástico/siliciclástico foram, na maioria dos casos, fortemente deformados. A idade precisa de sedimentação destas sucessões permanece em debate, mas recentes dados paleontológicos e geocronológicos têm consideravelmente restringidos os intervalos de deposição. Neste trabalho, reportamos trends isotópicos de alta resolução de C, O, Sr e S medidos em amostras bem preservadas e usamos principalmente isótopos de Sr e C em consonância com observações litostratigráficas/biostratigráficas, para estabelecer correlações detalhadas destas sucessões. Propor uma correlação quimioestratigráfica entre bacias Neoproterozoicas na América do Sul é o principal objetivo deste trabalho.

ABSTRACT: This report reviews and incorporates new elemental and isotope chemostratigraphic data for correlation of Neoproterozoic carbonate-dominated successions in South America (Argentina, Bolivia, Brazil, Paraguay and Uruguay). These thick mixed carbonate/siliciclastic successions were largely deposited in epicontinental basins or accumulated on passive margins on the edges of cratons (e.g. São Francisco, Amazonia, Rio Apa Block, Pampia and Río de la Plata paleocontinents) during extensional events related to the rifting of the Rodinia Supercontinent. From the stratigraphic point of view, these successions occur as three mega-sequences: glaciogenic, marine carbonate platform (above glaciomarine diamictites or rift successions), and dominantly continental to transitional siliciclastics. In the orogenic belts surrounding cratons, carbonate-dominated successions with important volcanoclastic/siliciclastic contribution have been, in most cases, strongly deformed. The precise ages of these successions remain a matter of debate, but recently new paleontological and geochronological data have considerably constrained depositional intervals. Here, we report high-resolution C, O, Sr, and S isotope trends measured in well-preserved sample sets and mainly use Sr and C isotopes in concert with lithostratigraphic/biostratigraphic observations to provide detailed correlations of these successions. The establishing of a high-level and definite chemostratigraphic correlation between Neoproterozoic basins in South America is the main goal of this work.

https://doi.org/10.1590/2317-4889201620160079 3662 downloads

14.

Nutrient retranslocation in forest species in the Brazilian Amazon
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Machado, Murilo Rezende

; Sampaio, Paulo de Tarso Barbosa

; Ferraz, João

; Camara, Rodrigo

; Pereira, Marcos Gervasio

Acta Scientiarum. Agronomy

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Mar 2016, Volume 38 Nº 1 Páginas 93 - 101

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO. A retranslocação interna é um importante mecanismo de conservação de nutrientes nas plantas, que depende de diferentes fatores. Contudo, ainda são incipientes os dados desta natureza, principalmente para espécies florestais tropicais. O presente trabalho objetivou avaliar a dinâmica de retranslocação de macronutrientes e a influência dos grupos ecológico (P: pioneiras x NP: não-pioneiras) e fenológico (ND: não-decíduas x D: semidecíduas / decíduas) nas concentrações foliares de macronutrientes em cinco espécies arbóreas em monocultivo na Amazônia brasileira: Acacia mangium Willd., Parkia decussata Ducke, Dipteryx odorata (Aublet) Willd., Jacaranda copaia (Aubl.) D. Don e Swietenia macrophylla King. Para tanto, foram coletadas folhas verdes fotossinteticamente ativas e folhas da serapilheira. A retranslocação foi estimada segundo a equação de Attiwill, Guthrie e Leuning (1978). As espécies pioneiras apresentaram maiores concentrações foliares de N; as não-pioneiras apresentaram maiores concentrações de K, Ca e S; e os resultados foram inconclusivos para P e Mg. As concentrações foliares de K e de P foram maiores nas espécies decíduas, enquanto que as de N, Ca, Mg e S foram praticamente idênticas entre os grupos fenológicos. No geral, as espécies pioneiras e as não-decíduas foram mais eficientes na retranslocação de nutrientes.

ABSTRACT. Internal retranslocation is an important mechanism for nutrient conservation in plants, which depends on different factors. However, there are little data about this subject, especially on tropical forest species. This study aimed to evaluate the macronutrient retranslocation dynamic and the influence of ecological (P: pioneer x NP: non-pioneer) and phenological (ND: non-deciduous x D: semideciduous / deciduous) characteristics on the macronutrient content of leaves of five tree species on monospecific plantations in the Brazilian Amazon: Acacia mangium Willd., Parkia decussata Ducke, Dipteryx odorata (Aublet) Willd., Jacaranda copaia (Aubl.) D. Don and Swietenia macrophylla King. Photosynthetically active green leaves and senescent leaves (leaf litter) were collected. Retranslocation was estimated through an equation proposed by Attiwill, Guthrie and Leuning (1978). The pioneer species presented higher foliar contents of N; the non-pioneer species presented higher contents of K, Ca and S; and the results were inconclusive for P and Mg. The deciduous species presented higher foliar contents of K and of P, whereas the foliar contents of N, Ca, Mg and S were virtually identical between the phenological groups. The internal retranslocation of foliar nutrients in pioneer and non-deciduous species was higher than that of non-pioneer and deciduous species.

https://doi.org/10.4025/actasciagron.v38i1.26805 1388 downloads

15.

Longer repetition duration increases muscle activation and blood lactate response in matched resistance training protocols
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Martins-Costa, Hugo Cesar

; Diniz, Rodrigo Cesar Ribeiro

; Lima, Fernando Vitor

; Machado, Sandra Carvalho

; Almeida, Rafael Silva Valle de

; Andrade, André Gustavo Pereira de

; Chagas, Mauro Heleno

Motriz: Revista de Educação Física

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Mar 2016, Volume 22 Nº 1 Páginas 35 - 41

Resumo: En | Texto: En | PDF: En

Abstract This study analyzed the effect of different repetition durations on electromyographic and blood lactate responses of the bench press exercise. Fifteen recreationally trained male volunteers completed two training protocols, matched for intensity (% one-repetition maximum; 1RM), number of sets, number of repetitions, and rest intervals. One of the protocols was performed with a repetition duration of 4 s (2 s concentric: 2 s eccentric; 2:2 protocol), whereas the second protocol had a repetition duration of 6 s (2 s concentric: 4 s eccentric; 2:4 protocol). The results showed higher normalized integrated electromyography (pectoralis major and triceps brachii) for the 2:4 protocol. Blood lactate concentration was also higher in the 2:4 protocol across all sets. These results show that adding 2 s to the eccentric action in matched training protocols increases muscle activation and blood lactate response, which reinforces the notion that increasing repetition duration is an alternative load progression in resistance training.

https://doi.org/10.1590/S1980-65742016000100005 5949 downloads

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