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The increase in anthropogenic activity over time has led to an exponential increase in greenhouse gas emissions, especially CO2. Proftable technologies for CO2 capture and separation are conspicuous, and porous biochars derived from biomass waste can be a useful solution. Herein, we produced activated nitrogen-doped biochars for CO2 capture from corn husk waste, urea and K2CO3, named N-Bio-X (X = 600, 700, and 800 °C). N-Bio-X exhibited microporosity and different nitrogen contents and thus played an important role in the adsorption of CO2. N-Bio-700 exhibited the highest CO2 adsorption capacity, fastest adsorption kinetics and excellent stability after multiple adsorption-desorption cycles. N-Bio-600 showed excellent CO2/N2 selectivity, induced by nitrogen sites, particularly pyridinic and graphitic nitrogen. The cost-effectiveness of the raw material, coupled with its high adsorption capacity, rapid kinetics, and stable properties, provided highly promising N-doped biochars for practical implementation in CO2 capture and separations in postcombustion processes. emissions CO conspicuous solution Herein nitrogendoped doped K2CO3 KCO K NBioX N Bio X 600 700 80 °C. C °C . °C) NBio700 NBio N-Bio-70 capacity adsorptiondesorption desorption cycles NBio600 N-Bio-60 CO2N2 CON N2 CO2/N selectivity sites costeffectiveness cost effectiveness material properties Ndoped processes K2CO 60 70 8 NBio70 N-Bio-7 NBio60 N-Bio-6 CO2N 6 7 NBio7 N-Bio- NBio6 N-Bio

https://doi.org/10.21577/0103-5053.20240034

Evaluation of Nitrogen-Doped Adsorbents Based on Reduced Graphene Oxide as Platforms for CO2 Capture NitrogenDoped Nitrogen Doped CO
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Ribeiro, Matheus G.

; Bessa, Isabela A. A.

; Silva, Aline F. M. da

; Ligiero, Carolina B. P

; Osta, Leonardo O.

; Silva, Ludmila P C.

; Araujo, Joyce R.

; Archanjo, Bráulio S.

; Ronconi, Célia M.

; Santos, Thiago C. dos

Journal of the Brazilian Chemical Society

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2024, Volume 35 N. 11 elocation e-20240093

Abstract: En | Text: En | PDF: En

CO2 emissions into the atmosphere have been rapidly rising due to human activities, resulting in the escalation of global warming. To mitigate climate change, it is imperative to develop materials for CO2 capture with high CO2 capacity and low production costs. Herein, we developed a facile method to obtain adsorbents based on reduced graphene oxide (rGO) sheets, NrGO(1 – X)700, where X represents the mass of diethylenetriamine (DETA) (X = 1, 2 and 4 g) used in the preparation. The materials NrGO(1 – 1)700, NrGO (1 – 2)700, and NrGO(1 – 4)700 were obtained from graphene oxide dispersions, followed by DETA impregnation and chemical activation with K2CO3. N2 isotherms demonstrated that the materials simultaneously presented micro and mesopores with similar values of specific surface area (280.16 to 310.32 m2 g–1), pore volume (0.26 to 0.28 cm3 g–1) and pore size (3.78 to 3.80 nm). CO2 sorption experiments revealed that the material NrGO(1 – 4)700, containing the highest amount of pyridinic, graphitic, and amino nitrogen functionalities, showed the best CO2 adsorption capacity. Diffuse reflectance Fourier transformed infrared spectroscopy experiments indicated stronger solid-gas interactions for NrGO(1 – 4)700 than for the other materials. CO activities warming change costs Herein rGO (rGO sheets NrGO1 1 NrGO( X700, X700 700, 700 X)700 (DETA g preparation 1700, 1700 1)700 ( 2700, 2700 2)700 4700 4)70 dispersions K2CO3 KCO K N 280.16 28016 280 16 (280.1 31032 310 32 310.3 m g–1, g1 g–1 , 0.26 026 0 26 (0.2 028 28 0.2 cm 3.78 378 3 78 (3.7 380 80 3.8 nm. nm . nm) 4700, pyridinic graphitic functionalities solidgas solid gas X70 70 X)70 170 1)70 270 2)70 470 4)7 K2CO 280.1 2801 (280. 3103 31 310. g– 02 (0. 0. 3.7 37 7 (3. 38 8 3. X7 X)7 17 1)7 27 2)7 47 4) 280. (280 (0 (3 X) 1) 2) (28 (2

https://doi.org/10.21577/0103-5053.20240093

Phytoconstituents, antioxidant and antiglycation activity of Chrysophyllum cainito L., Hancornia speciosa Gomes and Plinia glomerata Berg. fruits Phytoconstituents L L. Berg
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MARTINS, GUSTAVO R.

; BRONZEL JUNIOR, JOÃO LUIZ

; GRANERO, FILIPE O.

; FIGUEIREDO, CÉLIA CRISTINA M.

; SILVA, LUCIANA P.

; SILVA, REGILDO MÁRCIO G. DA

Anais da Academia Brasileira de Ciências

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2023, Volume 95 N. 2 elocation e20201853

Abstract: En | Text: En | PDF: En

Abstract The present study verified the presence of phytoconstituents and evaluated antioxidant (DPPH, FRAP, NO and TBARS tests) and antiglycation (REM test) activities of unconventional wild edible fruits Chrysophyllum cainito, Hancornia speciosa and Plinia glomerata. It was verified the presence of phenolic compounds for all fruits and flavonoids were observed only for C. cainito, which presented in its peel the highest total phenols (90.34 μg GAE mg-1) and flavonoids (30.4 μg RE mg-1) content. Sugar concentration was significant for all fruits, where H. speciosa showed the highest reducing sugar content (576.12 mg g-1) and C. cainito pulp showed the highest total sugar content (858.67 mg g-1). All fruits presented vitamin C and carotenoids, highlighting P. glomerata with the best results for ascorbic acid (2260.94 mg 100 g-1) and carotenoids (59.62 µg g-1). Extracts presented antioxidant activity, highlighting C. cainito peel that presented 65.64% (DPPH), 231.34 µM TE L-1 (FRAP), 49.34% (NO) and 22.56% (TBARS), while in antiglycation evaluation, P. glomerata showed evident activity. Therefore, it was possible to determine different phytoconstituents, and antioxidant and antiglycation activities of the fruits. These data provide subsidies for application of these fruits in new studies, to increase knowledge and preservation of these species. DPPH, DPPH (DPPH FRAP tests REM test 90.34 9034 90 34 (90.3 mg1 1 mg-1 30.4 304 30 4 (30. H 576.12 57612 576 12 (576.1 g1 g g-1 858.67 85867 858 67 (858.6 g1. . P 2260.94 226094 2260 94 (2260.9 10 59.62 5962 59 62 (59.6 activity 6564 65 64 65.64 , (DPPH) 23134 231 231.3 L1 L L- (FRAP) 4934 49 49.34 (NO 2256 22 56 22.56 TBARS, (TBARS) evaluation Therefore studies species 90.3 903 9 3 (90. mg- 30. (30 576.1 5761 57 (576. g- 858.6 8586 85 6 (858. 2260.9 22609 226 (2260. 59.6 596 5 (59. 656 65.6 2313 23 231. (FRAP 493 49.3 225 2 22.5 (TBARS 90. (90 (3 576. (576 858. 8 (858 2260. (2260 59. (59 65. 49. 22. (9 ( (57 (85 (226 (5 (8 (22 (2

https://doi.org/10.1590/0001-3765202320201853

Effects of dietary palm oil supplementation on ruminal degradation and apparent digestibility of nutrients in sheep
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MORAIS, EZIQUIEL DE

; SOUZA, SHIRLEY M.

; ÁVILA, SANDRA C. DE

; BORGES, IRAN

; SOUSA, LUCIANO F.

; GUIMARÃES, CÉLIA MARIA C.

; SILVA, ANDRÉ G. MACIEL E

Anais da Academia Brasileira de Ciências

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2023, Volume 95 N. 4 elocation e20190041

Abstract: En | Text: En | PDF: En

Abstract The aim of this study was to evaluate the effects of the inclusion of palm oil on the ruminal environment and nutrient digestibility of sheep diets. Twenty rumen-cannulated sheep were kept in individual stalls equipped with feeding and drinking troughs The animals were fed five diets based on Elephant grass (Pennisetum purpureum Schum. cv. Roxo) silage and supplemented with 0, 25, 50, 75, or 100 g kg-1 of palm oil (based on total DM). The Elephant grass was harvested at 90 days of regrowth and the concentrate was based on ground corn grain, soybean meal and mineral mix (20 g kg-1 DM), offered to the sheep at a ratio of 1.5 g kg-1d-1 of body weight (restricted intake) to maintain a forage-to-concentrate ratio of 1:1, based on DM. There were no differences (P = 0.324) in ruminal disappearance and degradability parameters with up to 75 g of oil per kg of DM. Organic matter showed a linear reduction in apparent digestibility, while ether extract increased linearly. Palm oil affected the digestibility and nutritional parameters in ruminant diets. rumencannulated rumen cannulated Pennisetum Schum cv Roxo 0 25 50 10 kg1 1 kg- DM . DM) 9 grain 20 (2 DM, , 15 5 1. kg1d1 kgd 1d d kg-1d- restricted intake foragetoconcentrate forage 11, 11 1, 1:1 P 0.324 0324 324 7 linearly 2 ( kg1d kg-1d 1: 0.32 032 32 0.3 03 3 0.

https://doi.org/10.1590/0001-3765202320190041

SYNTHESIS AND PHYTOTOXIC PROFILE OF A NEW TETRAOXANE DESIGNED FROM A COMMERCIAL AUXIN
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Antolínez, Isabel V.

; Barbosa, Luiz C. A.

; Maltha, Célia R. A.

; Pereira, Gustavo A. M. M.

; Silva, Antônio A.

Química Nova

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jul 2020, Volume 43 N. 7 Pages 901 - 908

Abstract: En | Text: En | PDF: En

Modern agriculture relies on the massive use of agrochemicals, including herbicides. Despite their effectiveness, a continuous use of herbicides sharing the same target has resulted in the selection of weed biotypes resistant to such chemicals. To cope with this problem, the development of new herbicides is an urgent requirement. In this work we applied the Active compound Derivatization Method (ADM) strategy to develop a new tetraoxane (5), derived from the synthetic auxin 2-(naphtalen-1-yl)acetic acid (NAA). Greenhouse bioassays showed that 5 caused chlorosis, necrosis and leaf epinasty in Cucumis sativa. Furthermore, this compound, at the concentration of 1.25 x 10-5 mol L-1, inhibited the growth of important weeds such as Bidens pilosa, Iponomea acuminate, Solanum americanum and Althernantera ficoidea. For some weeds, the compound effect was higher or comparable to those caused by commercial glyphosate and imazethapyr. In addition, degradation studies revealed that 5 is transformed into NAA. The results also showed that 5 could act as photosynthesis inhibitor and as an auxin herbicide. In summary, we have discovered a new compound that may be a useful lead for the development of a commercial herbicide.

https://doi.org/10.21577/0100-4042.20170549 503 downloads

Soybean yield in the Matopiba region under climate changes
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Silva, Vicente de P. R. da

; Silva, Roberta A. e

; Maciel, Girlene F.

; Souza, Enio P. de

; Braga, Célia C.

; Holanda, Romildo M. de

Revista Brasileira de Engenharia Agrícola e Ambiental

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jan 2020, Volume 24 N. 1 Pages 8 - 14

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

RESUMO As condições climáticas durante o ciclo da cultura são os principais fatores responsáveis pela produção final de qualquer cultivo. Este estudo teve o objetivo de avaliar as condições atuais e os efeitos dos cenários de mudanças climáticas sobre a produtividade da soja cultivada na região de Matopiba, localizada entre os Estados do Tocantins, Sul e Nordeste do Maranhão, Sul do Piauí e Oeste da Bahia. O modelo AquaCrop, versão 5.0 da FAO foi calibrado com dados do ano de 2014 e validado com os de 2016 em Palmas, TO, usando parâmetros de clima, solo, manejo da cultura coletados em duas campanhas experimentais realizadas entre os meses de junho e outubro nos anos de 2014 e 2016. O desempenho do modelo foi avaliado utilizando os indicadores estatísticos: erro de previsão (EP), coeficiente de determinação (R2), raiz quadrada do erro médio normalizado (RMSEN), coeficiente de eficiência do modelo Nash-Sutcliffe (EF) e o índice de concordância de Willmott (d). Verificou-se que o modelo AquaCrop subestima a produtividade de grãos de soja, na condição de déficit hídrico severo durante todo o ciclo do cultivo. O aumento da concentração de CO2 e da temperatura, projetada pelos modelos climáticos HadGEM2-ES e MIROC5 sob o cenário de estabilização (RCP 4.5) e o cenário de progressão RCP 8.5, contribuem para o aumento da produtividade de soja até o final deste século.

ABSTRACT The climatic conditions along the cycle are the main factors responsible for the final production of any crop. This study aimed to evaluate the current conditions and the effects of climate change scenarios on the yield of soybean grown in the Matopiba region, located between the states of Tocantins, south and northeast of Maranhão, south of Piauí and west of Bahia, Brazil. The AquaCrop model of FAO, version 5.0, was calibrated with data of 2014 and validated with those of 2016, using climate, soil and crop management parameters collected in two experimental campaigns conducted between June and October in 2014 and 2016 in Palmas, TO, Brazil. The performance of the model was evaluated using the following statistical indicators: prediction error (PE), coefficient of determination (R2), normalized root mean square error (NRMSE), Nash-Sutcliffe model efficiency coefficient (EF) and Willmott’s index of agreement (d). It was verified that the AquaCrop model underestimates soybean grain yield under severe water stress conditions throughout the growing cycle. The increase in CO2 concentration and in the air temperature, projected by the climate models HadGEM2-ES and MIROC5 under the scenario of stabilization (RCP 4.5) and the scenario of progression (RCP 8.5), have contributed to the increase in soybean yield by the end of this century.

https://doi.org/10.1590/1807-1929/agriambi.v24n1p8-14 1506 downloads

Impacto nutricional da cirurgia bariátrica: estudo comparativo do Bypass gástrico em Y de Roux e do Sleeve entre pacientes dos sistemas público e privado de saúde.
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Souza, Natália M. M.

; Santos, Ana Célia O.

; Santa-Cruz, Fernando

; Guimarães, Henrique

; Silva, Lucas M. L.

; de-Lima, Denise Sandrelly C.

; Ferraz, Álvaro A. B.

; Kreimer, Flávio

Revista do Colégio Brasileiro de Cirurgiões

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2020, Volume 47 elocation e20202404

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

RESUMO Objetivos: Comparar a evolução do perfil nutricional de pacientes submetidos ao bypass gástrico em Y de Roux (BGYR) e ao Sleeve, em hospitais dos setores público e privado da Saúde de Pernambuco. Método: O estudo incluiu pacientes submetidos à cirurgia bariátrica nos setores público e privado de saúde de Pernambuco no período de 2008 a 2016. Foram avaliados dados antropométricos e bioquímicos (Hemoglobina, Vitamina B12, Ferro e Ferritina) no período pré-operatório e com 3, 6 e 12 meses de pós-operatório. Resultados: Não foram registradas diferenças significativas entre os pacientes internados nos dois setores da Saúde no tocante às variáveis: níveis hemoglobina, anemia por deficiência de ferro e vitamina B12 em nenhuma das avaliações e conforme o tipo de cirurgia. Entre os pacientes submetidos ao BGYR, os níveis de ferro sérico foram significativamente menores nos pacientes do setor privado da Saúde apenas na primeira avaliação. Baixos níveis de ferritina sérica foram observados na segunda avaliação, sendo os pacientes do setor privado os que apresentaram menores valores. O sucesso cirúrgico foi significativamente maior no grupo que realizou o BGYR na rede privada. Conclusões: Com um seguimento de 12 meses pós-cirurgia bariátrica, não foi observada diferença estatisticamente significante no que diz respeito às deficiências de micronutrientes entre pacientes usuários dos setores público e privado de Saúde.

ABSTRACT Purpose: To compare the nutritional status follow up of patients who underwent Roux-en-Y gastric bypass (BGYR) and Sleeve gastrectomy (SG) in hospitals of the private and public health systems, in Pernambuco. Methods: This study included patients who underwent bariatric surgery in the public and private health systems, in Pernambuco, from 2008 to 2016. Anthropometric and biochemical (hemoglobin, B12, iron and ferritin) data were evaluated in the preoperative period and at 3, 6 and 12 months after the operation. Results: There were no significant difference between patients seen at the two health systems regarding the levels of hemoglobin, iron, anemia and vitamin B12. Patients who underwent the RYGB, presented with iron deficiency which was significantly lower for those in the private system, but only at the 3 month evaluation. Low levels of ferritin were observed at the 6 month evaluation, and patients in the private health system presented with the highest ferritin deficiency. The rate of surgical success was significantly higher in those patients undergoing the RYGB at the private system. Conclusions: After a 12-month bariatric surgery follow-up, there was no statistically significant difference regarding micronutrient deficiency between patients followed up at the private and public health systems.

https://doi.org/10.1590/0100-6991e-20202404 3487 downloads

Searching for mutations in the HNF1B gene in a Brazilian cohort with renal cysts and hyperglycemia
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Dotto, Renata P.

; Santana, Lucas Santos de

; Lindsey, Susan C.

; Caetano, Lilian Araújo

; Franco, Luciana F.

; Moisés, Regina Célia M. S.

; Sa, João R.

; Nishiura, José Luiz

; Teles, Milena Gurgel

; Heilberg, Ita P.

; Dias-da-Silva, Magnus R.

; Giuffrida, Fernando M. A.

; Reis, André F.

Archives of Endocrinology and Metabolism

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jun 2019, Volume 63 N. 3 Pages 250 - 257

Abstract: En | Text: En | PDF: En

ABSTRACT Objective To verify the presence of variants in HNF1B in a sample of the Brazilian population selected according to the presence of renal cysts associated with hyperglycemia. Subjects and methods We evaluated 28 unrelated patients with clinical suspicion of HNF1B mutation because of the concomitant presence of diabetes mellitus (DM) or prediabetes and renal cysts. Genotyping was accomplished using Sanger sequencing or multiplex ligation-dependent probe amplification (MLPA). In positive cases, available relatives were recruited. Results We found two patients with HNF1B mutations. The first presented the variant p.Pro328Leufs*48(c.983delC) and had DM, renal cysts, and hypomagnesemia. The second presented a heterozygous whole gene deletion in HNF1B, DM, renal cysts, body and tail pancreatic agenesis, and hypomagnesemia; this alteration was also found in his two siblings and his father. Conclusion The recruitment of suspected cases of HNF1B gene mutations in Brazilians due to hyperglycemia and renal cysts presents two positive cases. Our cases contribute to the annotation of clinical and biochemical phenotypes of this rare form of maturity-onset diabetes of the young (MODY).

https://doi.org/10.20945/2359-3997000000138 1160 downloads

Triiodothyronine (T3) upregulates the expression of proto-oncogene TGFA independent of MAPK/ERK pathway activation in the human breast adenocarcinoma cell line, MCF7
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Silva, Tabata M.

; Moretto, Fernanda C. F.

; Sibio, Maria T. De

; Gonçalves, Bianca M.

; Oliveira, Miriane

; Olimpio, Regiane M. C.

; Oliveira, Diego A. M.

; Costa, Sarah M. B.

; Deprá, Igor C.

; Namba, Vickeline

; Nunes, Maria T.

; Nogueira, Célia R.

Archives of Endocrinology and Metabolism

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apr 2019, Volume 63 N. 2 Pages 142 - 147

Abstract: En | Text: En | PDF: En

ABSTRACT Objective: To verify the physiological action of triiodothyronine T3 on the expression of transforming growth factor α (TGFA) mRNA in MCF7 cells by inhibition of RNA Polymerase II and the MAPK/ERK pathway Materials and methods: The cell line was treated with T3 at a physiological dose (10−9M) for 10 minutes, 1 and 4 hour (h) in the presence or absence of the inhibitors, α-amanitin (RNA polymerase II inhibitor) and PD98059 (MAPK/ERK pathway inhibitor). TGFA mRNA expression was analyzed by RT-PCR. For data analysis, we used ANOVA, complemented with the Tukey test and Student t-test, with a minimum significance of 5%. Results: T3 increases the expression of TGFA mRNA in MCF7 cells in 4 h of treatment. Inhibition of RNA polymerase II modulates the effect of T3 treatment on the expression of TGFA in MCF7 cells. Activation of the MAPK/ERK pathway is not required for T3 to affect the expression of TGFA mRNA. Conclusion: Treatment with a physiological concentration of T3 after RNA polymerase II inhibition altered the expression of TGFA. Inhibition of the MAPK/ERK pathway after T3 treatment does not interfere with the TGFA gene expression in a breast adenocarcinoma cell line.

https://doi.org/10.20945/2359-3997000000114 684 downloads

10.

Evapotranspiration, water use efficiency and crop coefficient of three lettuce varieties grown in a tropical region
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Silva, Vicente de Paulo R. da

; Tavares, Alexandra L.

; Sousa, Inajá F. de

; Silva, Thieres G. F. da

; Holanda, Romildo M. de

; Souza, Enio P. de

; Silva, Bernardo B. da

; Braga, Célia C.

; Almeida, Rafaela S. R.

Revista de Ciências Agrárias

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sep 2018, Volume 41 N. 3 Pages 221 - 230

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

Três experimentos de campo foram conduzidos em ambiente tropical no Brasil com o objetivo de avaliar os efeitos da data de plantio sobre a evapotranspiração (ETc), o coeficiente de cultivo (Kc) e eficiência de uso da água (EUA) de três variedades de alface (Lactuca sativa L.). A cultura foi cultivada em diferentes épocas do ano (outono, inverno e verão) sob clima tropical. Os valores de ETc foram obtidos através do método do balanço hídrico do solo e a evapotranspiração de referência (ETo) pelo método de Penman-Monteith, utilizando dados coletados em uma estação meteorológica automática localizada próxima à área experimental. Os resultados da pesquisa mostraram que os valores médios de ETc e Kc do alface foram 3,5 mm dia-1 e 0,82, respectivamente. A variedade crespa apresentou a maior produtividade (40,8 kg ha-1) durante o plantio de outono. Os resultados também evidenciaram que as três variedades de alface têm respostas diferentes às condições climáticas da região. A maior EUA das três variedades de alface ocorreram quando elas foram cultivadas durante a estação o outono e os valores mais baixos ocorreram durante o cultivo de inverno.

Three field experiments were carried out in a tropical environment in Brazil in order to evaluate the effect of planting date on crop evapotranspiration (ETc), crop coefficient (Kc) and water use efficiency (WUE) of three lettuce (Lactuca sativa L.) cultivars grown in different seasons (autumn, winter and summer) under tropical climate. ETc values were obtained through the soil water balance method and reference evapotranspiration (ETo) through the Penman-Monteith method, using data collected in an automatic weather station located close to the experimental area. The results of the research showed that the mean values of ETc and Kc for lettuce were 3.5 mm day-1 and 0.82, respectively. The curly cultivar showed the highest yield (40.8 kg ha-1) during the autumn transplanting date. Results also showed that the three lettuce varieties have different responses to the climatic conditions. The greatest WUE was observed for the three lettuce varieties when they were grown during the autumn growing season, and the lowest values occurred during the winter growing season.

https://doi.org/10.19084/RCA18042 717 downloads

11.

Matricaria Recutita Extract (Chamomile) to reduce Candida Albicans and Entrobacter Cloacae biofilms: in vitro study
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PEQUENO, Maitê Alves

; SILVESTRE, Marissa Rodrigues

; AMÊNDOLA, Isabela

; SILVA, Célia Regina Gonçalves e

; LEÃO, Mariella Vieira Pereira

; SANTOS, Silvana Soleo Ferreira dos

RGO - Revista Gaúcha de Odontologia

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jun 2018, Volume 66 N. 2 Pages 122 - 128

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

RESUMO Objetivo: Avaliar a atividade inibitória do extrato hidroalcoólico de Matricaria recutira (camomila) sobre biofilme de Candida albicans e Enterobacter cloacae. Métodos: Biofilmes de C. albicans e E. cloacae com trinta horas de formação foram submetidos por cinco minutos a 100, 200 e 300 mg/mL de extrato hidroalcoólico de M. recutita, digluconato de clorexidina 0,12% (Periogard® - controle de inibição) ou água destilada esterilizada (controle do crescimento). Depois foram lavados e divididos em dois grupos para determinação da viabilidade microbiana: G1 - contagem de unidades formadoras de colônia (ufc) em ágar e G2 - quantificação de DNA viável com corante cristal violeta por espectrofotometria. Resultados: O extrato de M. recutita a 300 mg/mL reduziu significativamente (p < 0,01) o número de ufc/mL de E. cloacae em biofilme com resultados semelhantes a clorexidina 0,12%, enquanto os extratos a 100 e 200 mg/mL não tiveram a mesma efetividade. Já a quantidade de DNA viável de E. cloacae foi reduzida (p < 0,05) em todas as concentrações do extrato de M. recutita testadas e clorexidina. Não houve diferença significativa (p=0,565) no número de ufc/mL ou na quantidade de DNA viável (p=0,8094) no biofilme de C. albicans quando comparado ao biofilme sem tratamento (controle) ou mesmo entre as concentrações do extrato quando comparados entre si ou com a clorexidina 0,12%. Conclusão: O extrato de M. recutita 300 mg/mL reduziu significativamente o biofilme de E. cloacae mas não de C. albicans, ambos com resultado semelhante à clorexidina 0,12% (Periogar®).

ABSTRACT Objective: This research study aimed at evaluating the inhibitory activity of Matricaria recutira (chamomile) hydroalcoholic extract on Candida albicans and Enterobacter cloacae biofilms. Methods: C. albicans and E. cloacae biofilms with thirty-hour formation were submitted, for five minutes, to 100, 200 and 300 mg / mL of M. recutita hydroalcoholic extract, chlorhexidine digluconate 0.12% (Periogard® - inhibition control) or sterile distilled water (growth control). Subsequently, they were washed and divided into two groups to determine the microbial viability: G/UFC - counting of colony forming units (cfu) in agar and G/DNA - quantification of viable DNA with violet crystal dye by spectrophotometry. Results: M. recutita extract at 300 mg/mL reduced significantly (p <0.01) the E. cloacae cfu/mL number in biofilm with results similar to chlorhexidine 0.12%, while extracts at 100 and 200 mg/mL did not have the same effectiveness. The amount of E. cloacae viable DNA was reduced (p <0.05) in all the M. recutita extract concentrations and chlorhexidine. There was no significant difference (p = 0.565) in the cfu/mL number or in the amount of viable DNA (p = 0.8094) in C. albicans biofilm when compared to untreated biofilm (control) or, even, between the extracts when compared to each other or to chlorhexidine 0.12%. Conclusion: 300 mg/mL M. recutita extract reduced significantly the E. cloacae biofilm but not the C. albicans, both with a similar result to chlorhexidine 0.12% (Periogar®).

https://doi.org/10.1590/1981-863720180002000033328 1249 downloads

12.

Brazilian legislation on genetic heritage harms Biodiversity Convention goals and threatens basic biology research and education
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ALVES, RUY JOSÉ V.

; WEKSLER, MARCELO

; OLIVEIRA, JOÃO A.

; BUCKUP, PAULO A.

; POMBAL JR., JOSÉ P.

; SANTANA, HÉLCIO R.G.

; PERACCHI, ADRIANO LÚCIO

; KELLNER, ALEXANDER W.A.

; ALEIXO, ALEXANDRE

; LANGGUTH, ALFREDO

; ALMEIDA, ALZIRA MARIA P. DE

; ALBERNAZ, ANA LUISA

; RIBAS, CAMILA C.

; ZILBERBERG, CARLA

; GRELLE, CARLOS EDUARDO V.

; ROCHA, CARLOS F.D.

; LAMAS, CARLOS JOSÉ E.

; HADDAD, CÉLIO F.B.

; BONVICINO, CIBELE R.

; PRADO, CYNTHIA P.A.

; LIMA, DANIELA O. DE

; ROSSA-FERES, DENISE C.

; SANTOS, FABRÍCIO R. DOS

; SALIMENA, FÁTIMA REGINA G.

; PERINI, FERNANDO A.

; BOCKMANN, FLÁVIO A.

; FRANCO, FRANCISCO LUÍS

; GIUDICE, GISELE M.L. DEL

; COLLI, GUARINO R.

; VIEIRA, IMA CÉLIA G.

; MARINHO-FILHO, JADER

; WERNECK, JANE M.C.F.

; SANTOS, JORGE A.D. DOS

; NASCIMENTO, JORGE LUIZ DO

; NESSIMIAN, JORGE LUIZ

; CORDEIRO, JOSÉ LUIS P.

; CLARO, KLEBER DEL

; SALLES, LEANDRO O.

; CASATTI, LILIAN

; PY-DANIEL, LUCIA HELENA R.

; SILVEIRA, LUÍS FÁBIO

; TOLEDO, LUÍS FELIPE

; OLIVEIRA, LUIZ F. DE

; MALABARBA, LUIZ ROBERTO

; SILVA, MARCELO D. DA

; COURI, MÁRCIA S.

; MARTINS, MÁRCIO

; TAVARES, MARCOS D.S.

; SOBRAL, MARCOS EDUARDO G.

; VIEIRA, MARCUS VINÍCIUS

; OLIVEIRA, MARIA DE LOURDES A.

; PINNA, MÁRIO DE

; HOPKINS, MICHAEL J.G.

; SOLÉ, MIRCO

; MENEZES, NAÉRCIO A.

; PASSOS, PAULO

; D’ANDREA, PAULO SERGIO

; PINTO, PEDRO C.E.A.

; VIANA, PEDRO L.

; TOLEDO, PETER M.

; REIS, ROBERTO E.

; VILELA, ROBERTO

; BASTOS, ROGÉRIO P.

; COLLEVATTI, ROSANE G.

; CERQUEIRA, RUI

; CASTROVIEJO-FISHER, SANTIAGO

; CARAMASCHI, ULISSES

Anais da Academia Brasileira de Ciências

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apr 2018, Volume 90 N. 2 Pages 1279 - 1284

Abstract: En | Text: En | PDF: En

https://doi.org/10.1590/0001-3765201820180460 7311 downloads

13.

Use of the Lower Extremity Functional Scale (LEFS-Brazil) questionnaire compared to Lequesne Algofunctional Index for definition of knee and hip osteoarthritis severity
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Santos, João Paulo M.

; Silva, Rubens A. da

; Fernandes, Marcos Tadeu P.

; Poli-Frederico, Regina Célia

; Santos, Denis C.

; Andraus, Rodrigo A.C.

; Fernandes, Thais Maria F.

; Fernandes, Karen B.P.

Revista Brasileira de Reumatologia

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may 2017, Volume 57 N. 3 Pages 274 - 277

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

https://doi.org/10.1016/j.rbre.2016.07.010 6507 downloads

14.

Procedures for calculation of the albedo with OLI-Landsat 8 images: Application to the Brazilian semi-arid
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Silva, Bernardo B. da

; Braga, Alexandra C.

; Braga, Célia C.

; Oliveira, Leidjane M. M. de

; Montenegro, Suzana M. G. L.

; Barbosa Junior, Bernardo

Revista Brasileira de Engenharia Agrícola e Ambiental

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jan 2016, Volume 20 N. 1 Pages 3 - 8

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

RESUMO O albedo da superfície desempenha papel importante nas trocas de energia e massa na camada limite planetária. Neste sentido, alterações no albedo modificam os balanços de radiação e energia à superfície, que podem ser detectadas com seu monitoramento. A determinação do albedo tem sido feita através de diversos sensores mas ainda não foram publicados procedimentos de cálculo do mesmo com imagens do OLI (Operational Land Images) do Landsat 8. O objetivo do estudo é apresentar, em detalhes, procedimentos de cômputo do albedo com imagens OLI e mapear o mesmo em áreas do perímetro irrigado São Gonçalo, PB. Foram selecionadas imagens do ano 2013, órbita e ponto 215 e 65, respectivamente. Os dados necessários ao cômputo do albedo foram extraídos do meta dados de cada imagem, quais sejam: termos aditivo e multiplicativo da radiância e reflectância das bandas de 2 a 7 e ângulo de elevação do Sol. Verificaram-se grandes diferenças entre os valores do albedo das parcelas irrigadas, corpos d'água e de vegetação nativa. Conclui-se que o albedo obtido com as imagens OLI apresenta maior grau de diferenciação dos diversos tipos de uso da terra, resultado do aumento substancial da resolução radiométrica deste novo sensor.

ABSTRACT The surface albedo plays an important role in the exchanges of energy and mass in the planetary boundary layer. Therefore, changes in albedo affect the balance of radiation and energy at the surface, which can be detected with its monitoring. Albedo determination has been performed through various sensors, but there is not yet any publication dealing with albedo calculation procedures using OLI (Operational Land Imager) - Landsat 8 images. The objective of the study is to present the procedures for computing the albedo with OLI images and map it in irrigated areas of the São Gonçalo Irrigated District, PB, Brazil. Images of the year 2013, path 215 and row 65, were selected. The data necessary for calculating the albedo were extracted from each image metadata: additive and multiplicative terms of radiance and reflectance, and sun elevation angle. There were large differences between the albedo values of irrigated plots, water bodies and native vegetation. The albedo obtained with OLI images provides a higher degree of differentiation of the various types of land use, due to the substantial increase in the radiometric resolution of this new sensor.

https://doi.org/10.1590/1807-1929/agriambi.v20n1p3-8 14201 downloads

15.

CARVALHO, G. C. M. Participação da comunidade na saúde. Campinas: Saberes, 2014.
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Delduque, Maria Célia

; Silva, José Agenor Álvares

Saúde em Debate

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mar 2015, Volume 39 N. 104 Pages 288 - 289

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.5935/0103-1104.20151040087 1447 downloads

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