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Bioactive extracts of red seaweeds Pterocladiella capillacea and Osmundaria obtusiloba(Floridophyceae:Rhodophyta) with antioxidant and bacterial agglutination potential

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Asian Pacific Journal of Tropical Medicine 2016年第4期9卷 363-370页

作者： Daniel Barroso de Alencar Fátima Cristiane Teles de Carvalho Rosa Helena Rebouas Daniel Rodrigues dos Santos Kelma Maria dos Santos Pires-Cavalcante Rebeca Larangeira de Lima Bárbara mendes Baracho rayssa mendes bezerra Francisco Arnaldo Viana Regine Helena Silva dos Fernandes Vieira Alexandre Holanda Sampaio Oscarina Viana de Sousa Silvana Saker-Sampaio Laboratrio de Produtos Naturais Marinhos.Departamento de Engenharia de Pesca Universidade Federal do Ceará.Campus do Pici.Ar.Mister Hull.s/nCaixa Postal 6043 Laboratrio de Microbiologia Ambiental e do Pescado.Instituto de Ciências do Mar.Universidade Federal do Ceará.Av.da Abolicao 3207 Laboratrio de Microbiologia Ambiental e do Pescado.Instituto de Ciências do Mar.Universidade Federal do Ceará Laboratrio de Produtos Naturais Marinhos.Departamento de Engenharia de Pesca Universidade Federal do Ceará Laboratrio de Cromatografia Departamento de QuimicaUniversidade do Estado do Rio Grande do NorteCampus Universitário Central

Objective:To evaluate the antioxidant,antibacterial and bacterial cell agglutination activities of the hexane(Hex) and 70%ethanol(70%EtOH) extracts of two species of red seaweeds Pterocladiella capillacea(***) and Osmundaria ***:In vitro antioxidant activity was determined by DPPH radical scavenging assay,ferric-reducing antioxidant power assay,ferrous ion chelating assay,β-carotene bleaching assay and total phenolic content *** activity was tested using the method of disc diffusion on Mueller-Hinton *** ability of algal extracts to agglutinate bacterial cells was also ***:The 70%EtOH extract of the two algae showed the highest values of total phenolic content compared to the Hex *** results of DPPH for both extracts(Hex,70%EtOH) of Osmundaria obtusiloba(43.46%and 99.47%) were higher than those of ***(33.04%and 40.81%) at a concentration of 1 000 μg/*** for the ferrous ion chelating,there was an opposite behavior,extracts of *** had a higher *** extracts showed a low ferric-reducing antioxidant power,with optical density ranging from0.054 to *** activities of all extracts evaluated for β-carotene bleaching were above 40%.There was no antibacterial activity against bacterial strains ***,the extracts of both species were able to agglutinate bacterial Gram positive cells of Staphylococcus aureus and Gram negative cells of Escherichia coli,multidrug-resistant Salmonella and Vibrio *** This is the first report of the interaction between these algal extracts,rich in natural compounds with antioxidant potential,and Gram positive and Gram negative bacterial cells.

关键词： Bioactive compounds Antioxidant Bacterial agglutination Rhodophyta

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Pylephlebitis—a rare complication of a fish bone migration mimicking metastatic pancreatic cancer:A case report

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World Journal of Clinical Cases 2021年第23期9卷 6768-6774页

作者： Sofia bezerra Nuno J França Firmo Mineiro Germano Capela Cristina Duarte António Ribeiro mendes Department of Surgery Centro Hospitalar do Médio TejoTomar 2304-909Portugal

BACKGROUND Pylephlebitis is a rare condition,poorly recognized by clinicians and with few *** this case,the clinical appearance resembled the clinical course of a pancreatic cancer and was originated by the ingestion of a fish bone,making the case more interesting and *** SUMMARY A 79-year-old female presented to the emergency department with fever,loss of appetite and *** in the right upper quadrant was *** marker were high.A computed tomography(CT)scan revealed gallstones and aspects compatible with acute *** patient was admitted to surgery ward and has her condition aggravated.A magnetic resonance revealed multifocal liver ***,a cholangiopancreatography and an endoscopic ultrasound(US)were able to diagnose the *** treatment was implemented and the patient made a complete *** In conclusion,this case report demonstrates for the first time the diagnosis of an unusual case of pylephlebitis complicated by the migration of a fish bone,mimicking metastatic pancreatic *** presentation and traditional imaging studies,such as transabdominal US and CT,remain the standard for diagnosing this condition.

关键词： Pylephlebitis Portal vein thrombosis Abdominal infection Fish bone Pancreatic cancer Case report

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Preparation of Bi_(4)Ti_(3)O_(12)(BIT)Ceramics via a High-Energy Ball Milling Process Doped with Multi-Walled Carbon Nanotubes(MWNTs)

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Materials Sciences and Applications 2013年第9期4卷 549-555页

作者： Alexandre Goncalves Pinheiro Gilberto Dantas Saraiva Josué mendes Filho Antonio Sergio bezerra Sombra Faculdade de Educacao Ciencias e Letras do Sertao Central Universidade Estadual do CearáQuixadáBrazil Departamento de Fisica Universidade Federal do CearáFortalezaBrazil

We prepared the Nano-sized bismuth titanate Bi4Ti3O12 (BIT) powders, through a high-energy ball milling process from their oxides Bi2O3 and TiO2. This BIT phase can be formed after a milling process for 40 min. With an increasing milling time, this particle size of mixture is gradually reduced, thus, we have mostly an amorphous phase. The BIT ceramics were duly obtained by sintering the synthesized powders at temperatures ranging from 850°C to 1000°C. The BIT ceramics sintered at 1020°C for 1 h, exhibiting a density with 7.52 g/cm3 of a crystaline phase and a dielectric of K = 288.11 (100 Hz), as well as a dielectric loss of 0.05 (100 kHz). The High-energy ball milling process is a promising way to prepare BIT ceramics. After the preparation of the BIT, we doped it with the Multi-Walled Carbon Nanotubes which are properly obtained by a chemical vapour deposition (CVD), using nickel as a catalyst, as well as using acetilene at 720°C, and then proceeded with the dielectric and optical measurements.

关键词： Bi_(4)Ti_(3)O_(12) Ceramics Ferroelectric High-Energy Ball Milling Sintering Carbon Nanotubes MWNT

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Numerical and Experimental Study of Steel Space Truss with Stamped Connection

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Journal of Civil Engineering and Architecture 2011年第6期5卷 494-504页

作者： Cleirton Andre Silva de Freitas Luciano mendes bezerra Ramon Saleno Yure Costa Silva Department of Civil Engineering University of Brasilia Brasilia DF-70910-900 Brazil

Tubular section members made of steel are common in space trusses. There are several types of connections to attach these members. The most popular is the staking end-flattened connection. The reduced cost and the fast assemblage of the truss are among the advantages of the staking end-flattened connection on 3D trusses. However, such connections present disadvantages like eccentricities and stiffness weakening of the tubular members. In this work, based on computer simulations and experimental lab tests on prototypes, small changes on the staking end-flattened connections such as reinforcement and eccentricity correction are evaluated. The results show an increase of 68% for local collapse and 17% for global collapse in the truss load carrying capacity when the suggested changes proposed in this article are used for the staking end-flattened connections.

关键词： Truss load capacity space trusses end-flattened connections explosion.

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Antidiabetic effects of galactomannans from Adenanthera pavonina *** streptozotocin-induced diabetic mice

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Asian Pacific Journal of Tropical Medicine 2018年第2期11卷 116-122页

作者： Icaro Gusmao Pinto Vieira Francisca Noelia Pereira mendes Sabrina Cesar da Silva Raquel Teixeira Terceiro Paim Bruno bezerra da Silva Stephen Rathinaraj Benjamin Eridan Orlando Pereira Tramontina Florean Maria Izabel Florindo Guedes Technological Development Park(PADETEC) Federal University of CearaPici Campus60455-970FortalezaCearaBrazil Department of Health and Nutrition State University of CearaAv.Dr.Silas Munguba 1700Itaper campus60714-903ForalezaCearaBrazil

Objective: To evaluate the antidiabetic effect of galactomannans extracted from Adenanthera pavonina's ***(GAP) in streptozotocin(STZ) induced diabetic ***:The preliminary galactomannan yield from Adenanthera pavonina *** and extraction products composition were *** chemical characterization methods like thin layer chromatography, Fourier transform infrared spectroscopy, ~1H and ^(13)C nuclear magnetic resonance, and molecular weight by gel permeation chromatography have been employed to characterize the extracted *** mice were divided in four groups: Normal control, diabetic control, GAP(1% and 2%) treated and standard drug treated *** mice received treatment daily for 30 *** was induced by STZ at a single dose of 120 mg/*** weight, water and food intake, fasting blood glucose, total cholesterol and triglycerides were *** analysis of pancreas and liver were performed to evaluate STZ-induced tissue ***: The isolated and extracted galactomannan from Adenanthera pavonina was confirmed by various chemical characterization *** exhibited a 1.46:1 mannose: galactose ratio, and high molar *** GAP enriched food decreased glycaemia, total cholesterol and *** didn't interfere on food intakes or body weight, although it increased water ***, the relative liver weight indicated toxic galactomannan effects on the histopathological changes of the pancreas in STZ induced ***: It is concluded that GAP is a natural product that contains potent galactomannan and is useful in preventing and treating diabetes.

关键词： Adenanthera pavonina Galactomannans Diabetes Glycaemia Total cholesterol Triacylglycerol

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Evaluation of the Maternal Health Indicators: An Ecological Study from 2000 to 2014

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Health 2018年第2期10卷 251-267页

作者： Dandara rayssa Silva de Souza Héllyda de Souza bezerra Julliane Tamara Araújo de Melo Thaiza Teixeira Xavier Nobre Fábia Barbosa de Andrade The Faculty of Health Sciences of Trairi (FACISA) Federal University of Rio Grande do Norte (UFRN) Santa Cruz Rio Grande do Norte Brazil

The aiming of this worksheet is to evaluate and to compare the quantity of prenatal appointment indicators;childbirth by kind of delivery;maternal mortality coefficient and maternal deaths number. It is about an ecological, descriptive and analytical study, made through the appreciation of secondary data related to the maternal mortality in Rio Grande do Norte, from 2000 to 2014. To that, it was used information from SISPACTO to compare real data to the estimated goals. The results show that there was an increase on the number of women who performed seven or more prenatal queries, in turn, there was an increase of alive newborns through cesarean, moreover, it is observed an oscillation on the maternal deaths number by residence during the studied period, achieving superior values to the agreed goals during the last two analyzed years. It is concluded that the maternal health, in Rio Grande do Norte, negative indicators are being presented concerning the maternal mortality, in spite of presenting an improvement on the prenatal access.

关键词： Prenatal Care Maternal Mortality Health Basic Indicators Maternal Health Services

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Analysis of the Progressive Collapse of Buildings underHigh Temperatures Using Successive ApproximationTechnique

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Journal of Civil Engineering and Architecture 2020年第1期14卷 46-60页

作者： Luciano Lins Vieira Luciano mendes bezerra Ramon Saleno Yure Rubim Costa Silva Welington Vital da Silva Emanuella Guntzel Barbosa Valdeir Francisco de Paula Department of Civil Engineering University of BrasíliaBrasíliaDF-70910-900Brazil Department of Civil Engineering CEUBBrasíliaDF-70790-075Brazil Federal Institute of Education Science and Technology of GoiásGoianiaGO-74055-110Brazil

This paper presents an investigation of the disproportionate collapse of multi-store steel buildings in a natural fire situation due to the progressive failure of their *** this purpose,it is intended to evaluate the effects of the redistribution of stress and vertical displacements of columns with the evolution of the temperature addressing,also,the impacts of the localized faults of these structural *** addition,another objective of this paper is the development of a practical analysis approach,which is called by successive *** a methodology,advanced computational techniques were developed to predict the structural behavior of the building as the temperature reduces the strength and stiffness of its structural *** the parametric study,the overall response of the building was investigated through fire simulations in many *** results showed that the phenomenon of redistribution of stresses that occur during the heating period is essentially due to the reduction in the modulus of elasticity of the *** addition,the study pointed out that the use of advanced computational techniques through the use of successive approximations technique is an excellent alternative to study the progressive collapse of buildings subject to high temperatures.

关键词： Progressive collapse fire column.

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Determining the Soil Erodibility for an Experimental Basin in the Semi-Arid Region Using Geoprocessing

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American Journal of Plant Sciences 2017年第12期8卷 3174-3188页

作者： Erich Celestino Braga Pereira Fernando bezerra Lopes Francisco Emanoel Firmino Gomes Aldenia mendes Masceno de Almeida Ana Caroline Messias de Magalhaes Eunice Maia de Andrade Department Agricultural Engineering Federal University of CearáFortalezaBrazil Department of Soil Science Federal University of CearáFortalezaBrazil

Erosion is the natural process which has the greatest environmental impact, and is the principal trigger for desertification around the globe. The main model used to estimate soil loss by erosion is the Universal Soil Loss Equation (USLE), which unites the major factors that influence erosion into one equation. The soil erodibility factor (K) is the component of this equation that represents soil physics, and is defined as the inherent capacity of the soil to withstand disintegration of its particles and their subsequent transport. The use of geostatistics is seen as an alternative in spatializing this variable from sampled to non-sampled points. The aim of this study therefore, was to determine the soil erodibility factor for an experimental basin in the semi-arid region of Brazil, in addition to generating the soil erodibility map using geostatistics. Disturbed and undisturbed soil samples were collected from 35 points, and laboratory samples were processed to determine the granulometry, permeability and organic matter of the soil, data which are used to determine the K-factor. Kriging was performed to spatialize the study variable, when spherical, exponential and Gaussian semivariograms were tested for generation of the soil erodibility map, these being evaluated by their respective deviations resulting from cross-validation. The mean value of K for the Haplic Luvisol was 0.0328 ton·ha·h/ha·MJ·mm;for the eutrophic Red-Yellow Argisol it was 0.0258 ton·ha·h/ha·MJ·mm;and for the Fluvic Neosol, it was 0.0424 ton·ha·h/ha·MJ·mm. The experimental basin is classified as highly erodible. The semivariogram that presented the best fit for generating the soil erodibility map of the study area was Gaussian.

关键词： Erosion Universal Soil Loss Equation Geostatistics

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Analysis of Risk Factors Sociodemographic for the Functional Dependence of Adults with Spinal Cord Injury

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Journal of Biomedical Science and Engineering 2015年第4期8卷 287-294页

作者： Roberta de Araújo e Silva Priscila Alencar mendes Reis Zuila Maria de Figueiredo Carvalho Ana Karina bezerra Pinheiro Lorena Barbosa Ximenes Maria Aparecida Alves de Oliveira Federal University of Ceará FortalezaBrazil Federal University of Maranhao ImperatrizBrazil

Objective: To evaluate the odds ratio of risk factors of sociodemographic and functional capacity of adults with spinal cord injury. Methods: Analytical, cross-sectional, quantitative study accomplished with a group of 47 people with spinal cord injury in hospitals and 27 in the household. The data were collected through a structured instrument composed of independent variables related to epidemiological and clinical data on spinal cord injury and dependent variables corresponding to the scale of the Barthel Index (BI). The data were analysed with the two-tailed chi-square or Fisher’s exact tests using the Statistical Package for the Social Sciences version 20.0 (SPSS Inc., USA). Odds ratio (OR) and 95% confidence intervals (CI) were used as an estimate of the risk. The level of significance was set at a p value ≤0.05. Results: It was found that males (OR = 4.804, p = 0.041), the education less than ten years (OR = 3.000, p = 0.036), the hospital care (OR = 5.250, p = 0.002) and injury time less than six months (OR = 5.250, p = 0.002) are sociodemographic factors that are associated with the functional capacity of individuals with spinal cord injury. Moreover, the total dependence (p < 0.001) and severe dependence (p = 0.019) are associated with quadricplegia. It was found that males (p = 0.041), the education less than ten years (p = 0.036), attention to hospital health (p = 0.002) and minor injury time less than six months (p = 0.002) are sociode-mographic factors associated with functional capacity of subjects. Conclusion: As a result, it was found that knowing the epidemiological and clinical factors of people with spinal cord injury is relevant to plan the nursing care. In other words, knowing the epidemiological and clinical factors of people with spinal cord injury is relevant to achieve the functional independence of these people, and it was demonstrated that the social determinants of health are interrelated and interdependent of chronic health conditions,

关键词： Spinal Cord Injury Health Promotion Social Determinants of Health Nursing

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