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au:SILVA, JOAO B. DA

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Co-feeding period on the survival and growth of larvae (Botia lohachata) during the feeding transition
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Fosse, Paulo José

; Mattos, Douglas da Cruz

; Fosse Filho, João Carlos

; Cardoso, Leonardo Demier

; Radael, Marcella Costa

; Silva, Maria Aparecida da

; Vidal Junior, Manuel Vazquez

Ciência Rural

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2024, Volume 54 N. 3 elocation e20220642

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

ABSTRACT: This study evaluated the effect of the co-feeding (C) period on the growth and survival of larvae of the yo-yo loach Botia lohachata ornamental species during the weaning period from live food (LF) to inert food (IF). The breeders were subjected to induced spawning using crude pituitary homogenate. A total of 2,400 larvae were used with an average initial weight of 0.39 ± 0.09 mg and an average total length of 4.08 ± 0.21 mm, from a single breeding pair. The live food was newly hatched nauplii of Artemia franciscana, and the inert diet was a commercial ration with 55% crude protein and two particle sizes (142-350 µm and 350-500 µm). As the first food, all larvae received A. franciscana during the first six days, except for the fasting (NC) and inert food (IF) groups. The following co-feeding strategies were employed: C4 = 4 days of co-feeding, C8 = 8 days of co-feeding, C12 = 12 days of co-feeding, and LF = Artemia during the entire experimental period. The longest period with live food promoted better larval growth rates. The specific growth rate of larvae fed live food during the entire period (LF) was higher than that of the other groups, followed by the co-feeding strategies. There was no effect (P > 0.01) on larval survival in the LF, C12, C8, and C4 groups, which ranged from 41% to 53% after 30 days. Treatment R resulted in high mortality and low growth, suggesting that live food should be the first food source for B. lohachata larvae.

RESUMO: Este estudo teve como objetivo avaliar o efeito do período de co-alimentação (C) no crescimento e sobrevivência de larvas da espécie ornamental Botia lohachata durante o período de desmame de alimento vivo (LF) para alimento inerte (IF). Os reprodutores foram submetidos à desova induzida com homogeneizado de hipófise. Foram utilizadas 2.400 larvas com peso inicial médio de 0,39 ± 0,09 mg e comprimento total médio de 4,08 ± 0,21 mm, de um único casal reprodutor. O alimento vivo foi náuplios recém-eclodidos de Artemia franciscana, e a dieta inerte foi uma ração comercial com 55% de proteína bruta e dois tamanhos de partículas (142-350 µm e 350-500 µm). Como primeiro alimento, todas as larvas receberam A. franciscana durante os primeiros seis dias, exceto os grupos jejum (NC) e alimento inerte (IF). As seguintes estratégias de co-alimentação foram empregadas: C4 = 4 dias de co-alimentação, C8 = 8 dias de co-alimentação, C12 = 12 dias de co-alimentação e LF = Artemia durante todo o período experimental. O maior período com alimento vivo promoveu melhores taxas de crescimento larval. A taxa de crescimento específico das larvas alimentadas com ração viva durante todo o período (LF) foi maior que a dos demais grupos, seguida das estratégias de co-alimentação. Não houve efeito (P > 0,01) na sobrevivência larval nos grupos LF, C12, C8 e C4, que variou de 41% a 53% após 30 dias. O tratamento IN resultou em alta mortalidade e baixo crescimento, sugerindo que o alimento vivo deve ser a primeira fonte de alimento para as larvas de B. lohachata.

https://doi.org/10.1590/0103-8478cr20220642

Non-destructive method for estimating chrysanthemum leaf area
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Silva, Toshik I. da

; Ribeiro, João E. da S.

; Dias, Marlon G.

; Cruz, Renata R. P.

; Macêdo, Larissa F.

; Nóbrega, Jackson S.

; Sales, Giuliana N. B.

; Santos, Erli P. dos

; Costa, Franciscleudo B. da

; Grossi, José A. S.

Revista Brasileira de Engenharia Agrícola e Ambiental

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dec 2023, Volume 27 N. 12 Pages 934 - 940

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

ABSTRACT Chrysanthemum (Dendranthema grandiflora) is the second most produced and commercialized ornamental plant in the world. Measuring leaf area through non-destructive methods is fundamental for studies on its growth and production. The estimation of leaf area by linear dimensions of the leaves can be a strategy for this purpose. The objective of this study was to find allometric equations to estimate the leaf area of chrysanthemum. The linear, linear without intercept, quadratic, cubic, power, and exponential regression models were used for the analysis. The choice of equations was based on the highest coefficients of determination. The non-destructive method using allometric models has accuracy for estimating the leaf area (LA) of chrysanthemum from the product between leaf length (L) and leaf width (W). The LA of chrysanthemum can be estimated using the equation ŷ = 0.6611*LW0.9490 (L - leaf length; W - leaf width). This equation will allow researchers and producers to determine leaf area non-destructively.

RESUMO O crisântemo (Dendranthema grandiflora) é a segunda planta ornamental mais produzida e comercializada no mundo. A medição da área foliar por métodos não destrutivos é fundamental para estudos sobre seu crescimento e produção. A estimativa da área foliar por dimensões lineares das folhas pode ser uma estratégia para este fim. O objetivo deste estudo foi encontrar equações alométricas para estimar a área foliar do crisântemo. Os modelos de regressão linear, linear sem intercepto, quadrático, cúbico, potência e exponencial foram utilizados para a análise. A escolha das equações foi baseada nos maiores coeficientes de determinação. O método não destrutivo por meio de modelos alométricos tem acurácia para estimar a área foliar (AF) do crisântemo a partir do produto entre o comprimento da folha (C) e a largura da folha (L). A AF do crisântemo pode ser estimada pela equação ŷ = 0,6611*CL0,9490 (C - comprimento da folha; L - largura da folha). Essa equação permitirá que pesquisadores e produtores determinem a área foliar de forma não destrutiva.

https://doi.org/10.1590/1807-1929/agriambi.v27n12p934-940

Growth and physiology of ‘Sunrise’ papaya seedlings in response to salinity and humic acid
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Targino, Vitor A.

; Lopes, Adriano S.

; Sousa, Valéria F. de O.

; Henschel, Juliane M.

; Silva, João H. B. da

; Rodrigues, Lucas S.

; Medeiros, Wiliana J. F. de

; Batista, Diego S.

; Dias, Thiago J.

Revista Brasileira de Engenharia Agrícola e Ambiental

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may 2023, Volume 27 N. 5 Pages 352 - 358

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

ABSTRACT Salinity is one of the major obstacles to agriculture in semi-arid regions, as it affects the physiological processes, growth, and yield of numerous crops. Hence, the application of salt stress attenuators is of paramount importance, as it enables the use of saline water for agricultural purposes. Among these, humic acid promotes the growth as well as water and nutrient uptake of plants. To this end, the present study evaluated the effects of humic acid on the growth and physiology of Carica papaya seedlings irrigated with saline water. The experiment followed the randomized block design with five levels of electrical conductivity (0.5, 1.15, 2.75, 4.35, and 5.0 dS m-1) and five concentrations of humic acid (0.5, 0.94, 2.0, 3.06, and 3.5 mL L-1). Growth, gas exchange, chlorophyll content, and chlorophyll a fluorescence were evaluated. Irrigation with 4.9 dS m-1 water and application of 3.05 mL L-1 humic acid promoted the growth of papaya seedlings. Irrigation with high-salinity water (4.96 and 3.09 dS m-1) coupled with the application of 3.05 and 2.21 mL L-1 humic acid increased internal CO2 concentration, transpiration, instantaneous water use efficiency, carboxylation efficiency, and chlorophyll b content. Overall, humic acid (3.5 mL L-1) attenuated the deleterious effects of salt stress, promoting the growth and improving the performance of papaya seedlings under moderate salinity (4 dS m-1).

RESUMO A salinidade é um dos grandes entraves na agricultura em regiões semiáridas, pois afeta os processos fisiológicos, crescimento e produção de diversas culturas. Assim, o uso de atenuadores do estresse salino é de extrema importância, pois permite o uso de águas salinas para fins agrícolas. Dentre estes, destacam-se os ácidos húmicos que promovem o crescimento e a absorção de água e nutrientes. Assim, o objetivo deste trabalho foi avaliar o efeito do ácido húmico sob o crescimento e a fisiologia de mudas de mamão irrigadas com água salina. O delineamento experimental utilizado foi em blocos casualizados com cinco níveis de condutividade elétrica (0,5; 1,15; 2,75; 4,35 e 5,0 dS m-1), e cinco concentrações de ácido húmico (0,5; 0,94; 2,0; 3,06 e 3,5 mL L-1). Foram avaliados o crescimento, trocas gasosas, índice de clorofilas e fluorescência da clorofila a. A irrigação com água de 4,9 dS m-1 e aplicação de 3,05 mL L-1 de ácido húmico proporcionou maior crescimento das mudas de mamoeiro. A irrigação de mudas de mamoeiro com alta salinidade (4,96 e 3,09 dS m-1) aliada à aplicação de 3,05 e 2,21 mL L-1 de ácido húmico proporcionou aumento da concentração interna de CO2, taxa de transpiração, eficiência instantânea do uso da água, eficiência de carboxilação e teor de clorofila b. O ácido húmico (3,5 mL L-1) atenua os efeitos deletérios da salinidade no mamoeiro, sendo capaz de aumentar o crescimento e melhorar o desempenho das mudas de mamão em salinidade moderada (4 dS m-1).

https://doi.org/10.1590/1807-1929/agriambi.v27n5p352-358

Nutritional status of watermelon irrigated with brackish water in different planting systems
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Silva Junior, Francisco B. da

; Lacerda, Claudivan F. de

; Sousa, Geocleber G. de

; Sousa, José T. M. de

; Mendonça, Andreza de M.

; Silva, Mateus G. da

; Pereira Filho, João V.

; Santos, Max F. dos

Revista Brasileira de Engenharia Agrícola e Ambiental

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may 2023, Volume 27 N. 5 Pages 367 - 374

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

ABSTRACT Watermelon is cultivated in practically all Brazilian states; however, there are still disagreements as to the best way to propagate it. In addition, the Northeast region, the main producing region in the country, is increasingly facing the scarcity of low-salinity water. Given this context, this study aimed to evaluate the morphophysiology and mineral contents of the watermelon crop subjected to irrigation water of different electrical conductivities, using seedlings or direct seeding. A randomized block experimental design with split plots was used, with four replications. The plot was formed by the electrical conductivities of the irrigation water (0.3, 1.5, 3.0, and 4.5 dS m-1) and the subplot by the planting methods - DS = direct seeding, TP1 = transplanting of the seedling produced with water of moderate salinity (1.5 dS m-1), and TP2 = transplanting of the seedling produced with water of low salinity (0.3 dS m-1). The highest biomass accumulation was obtained in the direct seeding method. Salt stress increases the intrinsic water use efficiency in watermelon plants. The TP1 and TP2 planting methods led to the highest contents of P and K in the leaf. The increase in the salinity level increases the content of S and reduces the content of Cu and Mn.

RESUMO A melancia é cultivada praticamente em todos os estados brasileiros; entretanto, ainda existem divergências quanto à melhor forma de propagação. Além disso, a região Nordeste, principal região produtora do país, enfrenta cada vez mais a escassez de água com baixos níveis de salinidade. Diante deste contexto, esse estudo teve como objetivo avaliar a morfofisiologia e os teores minerais na cultura da melancia submetida a diferentes condutividades elétricas da água de irrigação, utilizando-se mudas ou semeadura direta. O delineamento experimental foi em blocos ao acaso com parcelas subdivididas, com quatro repetições. A parcela foi formada pelas condutividades elétricas da água de irrigação (0,3; 1,5; 3,0; 4,5 dS m-1) e a subparcela pelos métodos de plantio - SD = semeadura direta, TP1 = transplantio da muda produzida com água de moderada salinidade (1,5 dS m-1) e TP2 = transplantio da muda produzida com água de baixa salinidade (0,3 dS m-1). O maior acúmulo de biomassa foi obtido no método de plantio por semeadura direta. O estresse salino aumenta a eficiência intrínseca do uso da água em plantas de melancia. Os métodos de plantio TP1 e TP2 apresentam os maiores valores nos teores foliares de P e K. O aumento do nível salino aumenta os teores foliares de S e reduz os teores de Cu e Mn.

https://doi.org/10.1590/1807-1929/agriambi.v27n5p367-374

Green Synthesis, Characterization and Antibacterial and Leishmanicidal Activities of Silver Nanoparticles Obtained from Aqueous Extract of Eucalyptus grandis
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Oliveira, Lucas M. F.

; Silva, Ueveton P. da

; Braga, João Pedro V.

; Teixeira, Álvaro V. N. C.

; Ribon, Andréa O. B.

; Varejão, Eduardo V. V.

; Coelho, Eduardo A. F.

; Freitas, Camila S. de

; Teixeira, Róbson R.

; Moreira, Renata P L.

Journal of the Brazilian Chemical Society

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apr 2023, Volume 34 N. 4 Pages 527 - 536

Abstract: En | Text: En | PDF: En

This work describes a green synthesis, the characterization, and biological evaluation of silver nanoparticles (AgNPs). The AgNPs suspension was synthesized using aqueous leaf extract of Eucalyptus grandis, which presented a characteristic band at 407 nm in the UV-Vis spectrum. The AgNPs presented a spherical shape and size of 9.7 ± 0.3 nm. The nanoparticles were stable over a month, indicating that E. grandis’ extract is suitable for their preparation and stabilization. The X-ray analysis showed that the crystallinity of AgNPs corresponded to the centered face phase of silver. The antibacterial and leishmanicidal activities of AgNPs were evaluated. The AgNPs presented antibacterial activity on the Gram-negative bacteria Escherichia coli at 53.9 µg mL-1. The leishmanicidal activity evaluation against promastigote forms of Leishmania infantum, Leishmania amazonensis, and Leishmania braziliensis showed that the biological response is dependent on the volume of AgNP suspension. It was demonstrated that L. infantum was more sensitive to the nanoparticle’s treatment than L. amazonensis and L. braziliensis. The treatment of L infantum promastigotes with 150 µL of AgNP suspension reduced parasite growth by 67.9%, a result which was similar to the treatment with 1 (66.7%) or 2 µL (70.6%) of amphotericin B used as a positive control.

https://doi.org/10.21577/0103-5053.20220126

Early Six-Minute Walk Test May Predict Midterm Outcomes Following Coronary Artery Bypass Grafting
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Pauletti, Hayanne O.

; Gomes, Walter José

; Rocco, Isadora S.

; Viceconte, Marcela

; Garcia, Bruna Caroline Matos

; Marcondi, Natasha O.

; Bublitz, Caroline B.

; Costa, Ariele dos Santos

; Paiva, Thâmara Pequeno de

; Spina, Giovanna Domingues

; Begot, Isis

; Silva, Célia Camelo

; Moreira, Rita Simone L.

; Branco, João Nelson Rodrigues

; Vargas, Guilherme Flora

; Hossne Jr., Nelson A.

; Arena, Ross

; Guizilini, Solange

Brazilian Journal of Cardiovascular Surgery

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2023, Volume 38 N. 4 elocation e20220459

Abstract: En | Text: En | PDF: En

ABSTRACT Objective: This study aims to investigate the ability of the six-minute walk distance (6MWD) as a prognostic marker for midterm clinical outcomes three months after coronary artery bypass grafting (CABG), to identify possible predictors of fall in 6MWD in the early postoperative period, and to establish the percentage fall in early postoperative 6MWD, considering the preoperative baseline as 100%. Methods: A prospective cohort of patients undergoing elective CABG were included. The percentage fall in 6MWD was assessed by the difference between preoperative and postoperative day (POD) five. Clinical outcomes were evaluated three months after hospital discharge. Results: There was a significant decrease in 6MWD on POD5 compared with preoperative baseline values (percentage fall of 32.5±16.5%, P<0.0001). Linear regression analysis showed an independent association of the percentage fall of 6MWD with cardiopulmonary bypass (CPB) and preoperative inspiratory muscle strength. Receiver operating characteristic curve analysis revealed that the best cutoff value of percentage fall in 6MWD to predict poorer clinical outcomes at three months was 34.6% (area under the curve = 0.82, sensitivity = 78.95%, specificity = 76.19%, P=0.0001). Conclusion: This study indicates that a cutoff value of 34.6% in percentage fall of 6MWD on POD5 was able to predict poorer clinical outcomes at three months of follow-up after CABG. Use of CPB and preoperative inspiratory muscle strength were independent predictors of percentage fall of 6MWD in the postoperative period. These findings further support the clinical application of 6MWD and propose an inpatient preventive strategy to guide clinical management over time.

https://doi.org/10.21470/1678-9741-2022-0459

Early Six-Minute Walk Test May Predict Midterm Outcomes Following Coronary Artery Bypass Grafting
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Pauletti, Hayanne O.

; Gomes, Walter José

; Rocco, Isadora S.

; Viceconte, Marcela

; Garcia, Bruna Caroline Matos

; Marcondi, Natasha O.

; Bublitz, Caroline B.

; Costa, Ariele dos Santos

; Paiva, Thâmara Pequeno de

; Spina, Giovanna Domingues

; Begot, Isis

; Silva, Célia Camelo

; Moreira, Rita Simone L.

; Branco, João Nelson Rodrigues

; Vargas, Guilherme Flora

; Hossne Jr., Nelson A.

; Arena, Ross

; Guizilini, Solange

Brazilian Journal of Cardiovascular Surgery

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2023, Volume 38 N. 4 elocation e20220459

Abstract: En | Text: En | PDF: En

https://doi.org/10.21470/1678-9741-2022-0459

Production and Characterization of Magnesium Cement Using Kaolinite Clay
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Batista, João Pedro B.

; Silva, André A. S.

; Cordeiro, Guilherme C.

; Moraes, João Claudio B.

Materials Research

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2023, Volume 26 Suppl. 1 elocation e20220593

Abstract: En | Text: En | PDF: En

Magnesium silicate cement is produced by mixing reactive magnesium oxide with a source of reactive silicon oxide. This cement is an interesting alternative to Portland cement due to the potential for low energy consumption, reduced greenhouse gas emissions, and use of renewable resources. Aluminosilicate-based raw materials can also be utilized to produce this type of cement. Thus, this work aims to study the use of kaolinite clay to produce magnesium aluminosilicate cement. The cement was produced by calcination of magnesium carbonate (MgCO3) and kaolinite clay at a temperature of 800 °C for 45 minutes with MgCO3/kaolin mass ratios of 90/10, 80/20, and 70/30. Mortars and pastes samples were cured at 60 °C for 1, 3, and 7 days. The results showed that the maximum compressive strength (32.7 MPa) was yielded for the 70/30 mortar mix after 3 days of curing. Microstructural studies of pastes indicated the incorporation of aluminum for the formation of magnesium aluminosilicate hydrated products, in addition to the formation of brucite.

https://doi.org/10.1590/1980-5373-mr-2022-0593

Nutritional risk and clinical outcomes of COVID-19 in hospitalized children and adolescents: a multicenter cohort
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Mello, Leilah B. de

; Silva, José Adailton da

; Clemente, Heleni A.

; Barros Neto, João A.

; Mello, Carolina S.

Jornal de Pediatria

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2023, Volume 99 N. 6 Pages 641 - 647

Abstract: En | Text: En | PDF: En

Abstract Objective: To verify the association between nutritional risk on admission and clinical outcomes of COVID-19 in hospitalized children and adolescents. Methods: Multicenter cohort study was conducted in two cities in the northeastern region of Brazil, with children under 18 years of age laboratory diagnosed with COVID-19. Sociodemographic data and nutritional risk screening by STRONGKids (low, medium and high risk) were collected remotely and in hospital records, respectively. The outcomes assessed were the need for ICU admission, length of stay (< 10 days or ≥ 10 days), critical cases, and death. Multivariable logistic regression models were used to evaluate the effects of high nutritional risk on COVID-19 clinical outcomes. Results: 103 individuals were evaluated, of these 35 (34.0%) had low risk, 44 (42.7%) medium risk, and 24 (23.3%) had high risk of malnutrition. In multivariate analysis, ICU bed admission (OR: 4.57; 95%CI, 1.39-4.97; p = 0.01), hospitalization longer than or equal to ten days (OR: 3.96; 95%CI, 1.22-2.83; p = 0.02) and critical cases (OR: 4.35; 95%CI, 1.08-7.55; p = 0.04) were associated with high nutritional risk. Death was not associated with high nutritional risk. Conclusions: Children and adolescents with high nutritional risk by STRONGkids at hospital admission were more likely to be admitted to the ICU, have hospitalization longer than or equal to ten days, and have critical cases when infected with SARS-CoV-2.

https://doi.org/10.1016/j.jped.2023.06.001

10.

Multidisciplinary Scientific Cruises for Environmental Characterization in the Santos Basin – Methods and Sampling Design
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Moreira, Daniel L.

; Dalto, Adriana G.

; Figueiredo JR, Alberto G.

; Valerio, Aline M.

; Detoni, Amalia M. S.

; Bonecker, Ana C. T.

; Signori, Camila N.

; Namiki, Cláudia

; Sasaki, Dalton K.

; Pupo, Daniel V.

; Silva, Danilo A.

; Kutner, Deborah S.

; Duque-Castaño, Diana C.

; Marcon, Eduardo H.

; Gallotta, Fabiana D. C.

; Paula, Fabiana S.

; Gallucci, Fabiane

; Roque, Gabriela C. F.

; Campos, Giulia S.

; Fonseca, Gustavo

; Mattos, Gustavo

; Lavrado, Helena P.

; Silveira, Ilson C. A. da

; Costa, Jessica O.

; Santos Filho, João R. dos

; Carneiro, Juliane C.

; Moreira, Julio C.F.

; Rozo, Laura

; Araujo, Leandro F.M.

; Lazzari, Letícia

; Silva, Letícia O. da

; Michelazzo, Luan S.

; Fernandes, Luciano F.

; Dottori, Marcelo

; Araújo Jr., Marcus A. G. de

; Chuqui, Mateus G.

; Ceccopieri, Milena

; Borges-Silva, Milton

; Kampel, Milton

; Bergo, Natascha M.

; Silva, Paulo V. M.

; Tura, Pedro M.

; Moura, Rafael B. de

; Romano, Renato G.

; Martins, Renato P.

; Carreira, Renato S.

; Toledo, Rodrigo G.A.

; Bonecker, Sérgio L.C.

; Disaró, Sibelle T.

; Rodrigues, Silvana V.

; Corbisier, Thais N.

; Vicente, Thaisa M.

; Paiva, Vitor G. de

; Pellizari, Vivian H.

; Belo, Wellington C.

; Brandini, Frederico P.

; Sousa, Silvia H.M

Ocean and Coastal Research

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2023, Volume 71 Suppl. 3 elocation e23022

Abstract: En | Text: En | PDF: En

Abstract The Santos Basin (SB) is the main petroliferous basin in the Brazilian continental margin and one of the most studied marine areas in Brazil. However, historical data suggest that new efforts should be carried out to acquire quantitative biological data, especially in the deep sea, to establish the baseline of essential ocean variables in different ecosystems for future monitoring programs. The Brazilian energy company Petrobras planned and executed 24 oceanographic cruises over a period of 2 years to assess the benthic (SANSED cruise) and pelagic (SANAGU cruise) systems of the SB (356 days at sea in 2019 and 2021/2022). These efforts were part of the Santos Project, which comprised a comprehensive environmental study aimed at investigating benthic and pelagic variables to characterize ecology, biogeochemistry, thermohaline properties of water masses, and ocean circulation patterns, geomorphology, and sedimentology, as well as organic and inorganic chemistry. Here we present the detailed sampling designs and the field methods employed on board, during the SB scientific cruises. All sampling protocols were based on standardized approaches. For the benthos analyses, triplicate sediment samples were performed using a GOMEX-type box corer (0.25 m²) or a large modified Van Veen grab (0.75 m²) at 100 stations ranging from 25 to 2400 m depth. At each station, 25 geochemical and physico-chemical parameters were analyzed in addition to micro-, meio-, and macrofauna and living foraminifera samples. For the pelagic system, 60 stations were selected to investigate the plankton community, ranging in size from pico- to macroplankton, through vertical, horizontal, and oblique net hauls (20, 200, and 500 μm mesh size), as well as 25 biogeochemical parameters collected with an aid of a CTD-rosette sampler. Part of this scientific information also serves the Regional Environmental Characterization Project (PCR-BS) in support of Petrobras’ Santos Basin drilling licensing process led by the Brazilian Environmental Agency – IBAMA. This project contributes to the sustainable development of the SB, in line with the guidelines of the United Nations Decade of Ocean Science for Sustainable Development.

https://doi.org/10.1590/2675-2824071.22072dlm

11.

Tratamento de feridas complexas com prótese de PVC e enxerto parcial de pele autólogo: Protocolo acelerado e de baixo custo de cicatrização por terceira intenção
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ARIEL-DE-LIMA, DIEGO

; DE-LIMA, LANA LACERDA

; CLAZZER, RENATA

; PAIVA, KÊILERTE RENES GURGEL

; DE-ANDRADE, ANTÔNIO VICENTE DIAS

; DOS-SANTOS, JORGE EDSON PINHEIRO

; SILVA NETO, JOÃO FIRMINO DA

Revista Brasileira de Cirurgia Plástica

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2023, Volume 38 N. 3 elocation e0765

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

■ ABSTRACT Introduction: Complex wounds are serious tegumentary injuries that are difficult to resolve with conventional dressings. This study aimed to describe a third-intention wound healing technique, reproducible and low cost, applicable to complex wounds, using polyvinyl chloride (PVC) prosthesis temporarily placed in the injured area to promote the protection and stimulate its “granulation,” followed by autologous partial-thickness skin grafting. Method: Consecutively, 20 patients with complex wounds resulting from external causes were selected and divided into 2 groups: A - patients who underwent the coverage technique with PVC prosthesis, followed by grafting, and B - patients submitted to the care of the dressing team, with daily changes until wound granulation, standard in our institution. Patients were evaluated regarding length of stay; costs; local pain; complications; the time until medical discharge; and patient satisfaction. Results: The length of hospital stay, its costs, and the time until medical discharge were shorter in group A (p<0.05). However, there was no statistically significant difference in local pain between techniques A and B. Conclusion: The technique using PVC prosthesis and graft has good efficacy for treating complex wounds, being reproducible and inexpensive.

■ RESUMO Introdução: Feridas complexas são lesões tegumentares graves, de difícil resolução com curativos convencionais. O objetivo deste estudo foi descrever uma técnica de cicatrização de feridas por terceira intenção, reprodutível e de baixo custo, aplicável a feridas complexas, utilizando uma prótese de policloreto de vinila (PVC) colocada temporariamente na área da lesão para promover proteção e estimular sua “granulação”, seguida de enxerto autólogo de pele de espessura parcial. Método: De forma consecutiva, foram selecionados 20 pacientes com feridas complexas, decorrentes de causas externas, divididos em 2 grupos: A - pacientes que foram submetidos à técnica de cobertura com prótese de PVC, seguida de enxerto; e B - pacientes submetidos aos cuidados da equipe de curativo, com trocas diárias até granulação da ferida, padrão da nossa instituição. Os pacientes foram avaliados quanto ao tempo de internação; custos; em relação à dor local; à presença de complicações; ao tempo até a alta médica; e à satisfação do paciente. Resultados: O tempo de internamento e seus custos, assim como o tempo até a alta médica, foram menores no grupo A (p<0,05). Todavia, não houve diferença estatisticamente significativa em relação à dor local entre as técnicas A e B. Conclusão: A técnica utilizando prótese de PVC e enxerto possui boa eficácia para o tratamento de feridas complexas, sendo reprodutível e de baixo custo.

https://doi.org/10.5935/2177-1235.2023rbcp0765-pt

12.

Identification of phlebotomine sand fly (Diptera: Psychodidae) in Atlantic forest fragments and their dispersal to urban area
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SILVA, FRANCISCO A.

; COSTA, DIMÍTRI A.

; SILVA, BRENO HENRIQUE M.

; ALVES, ADRIANO FRANCISCO

; SOUZA, SÉRGIO JOEL DE

; SILVA, GEUBA MARIA B. DA

; MENESES, JANAÍNA M.

; MATOS-ROCHA, THIAGO JOSÉ

; CHRISTOFFERSEN, MARTIN L.

; CAVALCANTI, MARÍLIA GABRIELA S.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 N. 4 elocation e20191596

Abstract: En | Text: En | PDF: En

Abstract The geographical distribution of sand flies in Brazil has been the subject of some studies, yet there is no information about the phlebotomine fauna in João Pessoa, State of Paraíba, Brazil. The aim of this work is to evaluate the occurrence and distribution of sand flies in the Atlantic forest fragments and to evaluate a possible dispersion in 06 nearby districts. Light traps were used during three consecutive nights, supplemented by an aspirator during the dry period and rainy season. A total of 222 sand flies were found, 143 (130 males and 13 females) in the Atlantic forest, and 79 in urban areas. During the entire dry season, three species of phlebotomine sand flies were recorded in 11 forest fragments, Lutzomyia longipalpis, Lu. migonei and Lu. whitmani. During the rainy season, only Lu. longipalpis was found. This was the only species identified in the studied neighborhoods during both seasons. The differences in diversity of sand flies encountered between natural habitats and urban areas may thus be correlated mostly with adaptations to particular habitats and availability of food. One species (Lu. longipalpis) appears to be rapidly adapting to urban areas because of deforestation.

https://doi.org/10.1590/0001-3765202320191596

13.

Bovine genital leptospirosis: Findings in bulls maintained in Caatinga biome conditions
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Barnabé, Nathanael N.C.

; Soares, Rafael R.

; Nogueira, Denise B.

; Araújo Júnior, João P.

; Malossi, Camila D.

; Costa, Diego F.

; Silva, Maria L.C.R.

; Higino, Severino S.S.

; Azevedo, Sérgio S.

; Alves, Clebert J.

Pesquisa Veterinária Brasileira

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2023, Volume 43 elocation e07376

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

ABSTRACT: Leptospirosis is a disease that causes economic and social impact, as it affects wild and domestic animals and humans. There may be peculiarities in the epidemiology of this disease in the Caatinga biome, Brazil, where the environment is adverse and the etiologic agent, Leptospira spp., requires alternative transmission routes. Considering that in bovine leptospirosis the genital carrier is constantly neglected and the lack of reports on the role of bulls in the epidemiology of the bovine genital leptospirosis (BGL) syndrome, mainly in semiarid conditions such as Caatinga biome, this study aimed to investigate bulls maintained in Caatinga biome conditions as genital carriers of leptospires. Urinary tract (urine, bladder, and kidney) and reproductive tract (vas deferens, cauda epididymis, and vesicular gland) samples were collected from 42 slaughtered bulls. Microscopic agglutination test (MAT), polymerase chain reaction (PCR), and microbiological isolation were included as diagnostic methods. Anti-Leptospira spp. antibodies were found in 17 (40.48%) animals, while 26 animals (61.90%) had at least one organ or urine with leptospiral DNA, and 10 animals (23.81%) were positive at bacteriological culture. Sequenced samples targeting the LipL32 gene showed 99% similarity with Leptospira borgpetersenii. Molecular analysis of samples from the vas deferens and cauda epididymis is recommended for the diagnosis of genital leptospirosis in bulls and, if it is impossible to collect these tissues, semen can be used. In conclusion, this study provides important information relating to bulls from the Caatinga biome, Brazil, as carriers of genital leptospirosis. The results indicate that, even under adverse environmental conditions, leptospires may survive and propagate, mainly due to the characteristic of genital carriers for the sexually spreading of adapted Leptospira species without influence by external variables. Thus, prevention and control strategies for bovine leptospirosis need to include actions aimed at the genital carrier.

RESUMO: A leptospirose é uma doença que causa impacto econômico e social, pois afeta animais silvestres, domésticos e humanos. É possível que existam peculiaridades na epidemiologia desta doença no bioma Caatinga, Brasil, onde o ambiente é adverso e o agente etiológico, Leptospira spp., requer vias alternativas de transmissão. Considerando que na leptospirose bovina o portador genital é constantemente negligenciado e a falta de relatos sobre o papel dos touros na epidemiologia da síndrome da leptospirose genital bovina (BGL), principalmente em condições semiáridas como no bioma Caatinga, este estudo teve como objetivo investigar touros mantidos em condições do bioma Caatinga como portadores genitais de leptospiras. Amostras do trato urinário (urina, bexiga e rim) e do trato reprodutivo (ducto deferente, cauda do epidídimo e glândula vesicular) foram coletadas de 42 touros abatidos. Teste de soroaglutinação microscópica (SAM), reação em cadeia da polimerase (PCR) e isolamento microbiológico foram incluídos como métodos de diagnóstico. Anticorpos anti-Leptospira spp. foram encontrados em 17 (40,48%) animais, enquanto 26 animais (61,90%) apresentaram pelo menos um órgão ou urina com DNA leptospírico, e 10 animais (23,81%) foram positivos na cultura bacteriológica. As amostras sequenciadas a partir do gene LipL32 apresentaram 99% de similaridade com Leptospira borgpetersenii. Recomenda-se a análise molecular de amostras de ducto deferente e cauda do epidídimo para o diagnóstico de leptospirose genital em touros e, na impossibilidade da coleta desses tecidos, o sêmen pode ser utilizado. Em conclusão, este estudo fornece informações importantes sobre touros do bioma Caatinga, Brasil, como portadores de leptospirose genital. Os resultados indicam que, mesmo em condições ambientais adversas, as leptospiras podem sobreviver e se propagar, principalmente devido à característica de os portadores genitais disseminarem sexualmente espécies adaptadas de Leptospira sem influência de variáveis externas. Assim, as estratégias de prevenção e controle da leptospirose bovina precisam incluir ações voltadas para o portador genital.

https://doi.org/10.1590/1678-5150-pvb-7376

14.

Bilateral perirenal fat necrosis in a sambar deer (Rusa unicolor)
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Bernardo, Ana C.M.R.

; Lima, Telma S.

; Fonseca, Silvio M.C.

; Silva-Filho, Givaldo B.

; Bom, Hisadora A.S.C.

; Melo, Elizandra T.

; Silva, João P.G.

; Mendonça, Fábio S.

Pesquisa Veterinária Brasileira

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2023, Volume 43 elocation e07254

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

ABSTRACT: The gross and histopathological findings of perirenal fat necrosis in a sambar deer (Rusa unicolor) are described in a 6-year-old female deer that was necropsied after showing severe apathy, weight loss, recumbency, and death. At post-mortem examination, two large white to yellow, irregular, and encapsulated masses involving both kidneys were observed. Microscopically, these masses consisted of fat tissue presenting multifocal to coalescing areas of necrosis, diffuse infiltration of lymphocytes, macrophages, occasional plasma cells, and multinucleated giant cells. Multifocally, the necrotic sites were replaced by mineralization and fibrosis. The described condition has not been reported in deer and the exact mechanisms of development of perirenal fat necrosis remain to be determined. Massive fat necrosis has been reported in other animal species such as dogs, cats, pigs, goats, cattle, and whales (Balaena mysticetus). It is usually an incidental finding during post-mortem examination that needs to be differentiated from neoplasms originating from the adipose tissue, kidneys and adrenals, and disorders resulting from pancreatitis and obesity.

RESUMO: São descritos os achados anátomo e histopatológicos da necrose gordurosa perirrenal em um cervo sambar (Rusa unicolor) fêmea de seis anos de idade que foi necropsiado após apresentar severa apatia, perda de peso, decúbito permanente e morte. Durante a necropsia foram observadas duas grandes massas brancas a amarelas, duras, irregulares e encapsuladas envolvendo ambos os rins. Microscopicamente, essas massas consistiam em áreas de necrose multifocais a coalescentes do tecido adiposo perirrenal, com infiltrado difuso de linfócitos, macrófagos e ocasionais plasmócitos e células gigantes multinucleadas. Multifocalmente, as áreas necróticas estavam substituídas por mineralização e fibrose. A compressão dessas massas no córtex renal foi associada à degeneração tubular renal leve a mínima. A condição descrita não foi relatada em veados e os mecanismos exatos de desenvolvimento da necrose da gordura perirrenal ainda precisam ser determinados. Necrose gordurosa maciça foi relatada em outras espécies de animais, como caninos, felinos, suínos, caprinos, bovinos e baleias (Balaena mysticetus). Geralmente é um achado incidental durante o exame post-mortem que precisa ser diferenciado de neoplasias originárias do tecido adiposo, rins e adrenais, e distúrbios decorrentes de pancreatite e obesidade.

https://doi.org/10.1590/1678-5150-pvb-7254

15.

Dorsal thermal necrosis in a Brazilian sheep flock
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Lima, Telma S.

; Fonseca, Silvio M.C.

; Silva Filho, Givaldo B.

; Silva, João Paulo G.

; Tenório, Mayra S.M.

; Lucena, Ricardo B.

; Melo, Elizandra T.

; Mendonça, Fábio S.

Pesquisa Veterinária Brasileira

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2023, Volume 43 elocation e07321

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

RESUMO: Lesões por queimaduras térmicas são ocorrências muito incomuns em pequenos ruminantes no mundo e no Brasil não há registros da ocorrência desta condição. Descreve-se um surto de necrose térmica dorsal em um rebanho de ovinos no município de Boca da Mata, Zona da Mata do Estado de Alagoas, Nordeste do Brasil. Doze ovelhas foram separadas do rebanho para realização de exame clínico geral e avaliação dos níveis séricos de uréia, creatinina,gama-glutamiltransferase e aspartato aminotransferase. Adicionalmente, biópsias de pele e fígado foram realizadas em duas ovelhas severamente afetadas. O rebanho era criado sob manejo semi-intensivo em uma área de pastagem sem sombreamento e recebiam aproximadamente oito horas de insolação diárias. Essas ovelhas desenvolveram dermatite severa que evoluiu para necrose da pele dorsal. Macroscopicamente, as lesões foram observadas apenas na pele dorsal de ovelhas negras, enquanto ovelhas com áreas dorsais brancas da pele não foram afetadas. Microscopicamente, a epiderme e a derme profunda das ovelhas afetadas apresentavam necrose coagulativa difusa, além de incontinência pigmentar e hiperqueratose paraqueratótica. A necrose térmica dorsal ocorre apenas na pele dorsal de ovelhas negras em situações de exposição excessiva à luz solar devido ao acúmulo de radiação ultravioleta. A distribuição das lesões, restrita à região dorsal da pele, é um importante aspecto clínico-patológico nesses casos que pode auxiliar na diferenciação das lesões causadas por fotossensibilização, pois geralmente envolvem outros sítios anatômicos. Este é o primeiro relato de necrose térmica dorsal em ovinos no Brasil. RESUMO condição Descrevese Descreve se Alagoas uréia creatinina,gamaglutamiltransferase creatininagamaglutamiltransferase creatinina,gama glutamiltransferase creatinina gama aminotransferase Adicionalmente semiintensivo semi intensivo diárias Macroscopicamente Microscopicamente difusa paraqueratótica ultravioleta clínicopatológico patológico fotossensibilização anatômicos gamaglutamiltransferase creatininagama

ABSTRACT: Thermal burn injuries are very uncommon occurrences in small ruminants worldwide, and in Brazil, there are no descriptions of this condition. Herein we describe an outbreak of dorsal thermal necrosis in a flock of sheep in the municipality of Boca da Mata, in the Forest Zone of the State of Alagoas, Northeastern Brazil. Twelve ewes were separated from the flock for a general clinical examination and evaluation the serum levels of urea, creatinine, gamma-glutamyltransferase, and aspartate aminotransferase. In addition, biopsies of the skin and liver were performed on two severely affected sheep. The flock was raised in semi-intensively management in a pasture area without shading and receiving approximately eight hours of insolation daily and developed severe dermatitis that evolved to severe necrosis of the dorsal skin. Grossly, these lesions were only observed in the dorsal skin of black sheep, while sheep with white dorsal areas of skin were not affected. Microscopically, the epidermis and deep dermis of affected sheep showed diffuse coagulative necrosis, pigmentary incontinence, and parakeratotic hyperkeratosis. Dorsal thermal necrosis occurs only in the dorsal skin of black sheep in situations of excessive exposure to sunlight due to the accumulation of ultraviolet radiation. The distribution of the lesions, restricted to the dorsal area of the skin, is an important clinicopathological aspect in these cases that can help differentiate lesions caused by photosensitization, as they usually involve other anatomical sites. To the authors’ knowledge, this is the first report of dorsal thermal necrosis in sheep in Brazil. ABSTRACT worldwide Brazil condition Mata Alagoas urea creatinine gammaglutamyltransferase, gammaglutamyltransferase gamma glutamyltransferase, glutamyltransferase gamma-glutamyltransferase aminotransferase addition semiintensively semi intensively Grossly Microscopically incontinence hyperkeratosis radiation photosensitization sites authors knowledge

https://doi.org/10.1590/1678-5150-pvb-7321

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