410 results on '"Carlos Luz"'
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152. “APPENA 70 ANNI... DALA FONDAZIONE DEL CONSIGLIO ECUMENICO DELLE CHIESE, CEC (1948-2018)”
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Burigana, Riccardo, primary and Marques, Luiz Carlos Luz, additional
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- 2018
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153. “APENAS 70 ANOS ... DA FUNDAÇÃO DO CONSELHO MUNDIAL DE IGREJAS, CMI (1948-2018)”
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Marques, Luiz Carlos Luz, primary and Burigana, Riccardo, additional
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- 2018
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154. Editorial
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Cabral, Newton Darwin de Andrade, primary and Marques, Luiz Carlos Luz, additional
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- 2018
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155. O “Irmão dos Pobres” esteve lá: O que o “Pequeno Concílio” de Medellín e Helder Câmara significaram, um para o outro?
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Marques, Luiz Carlos Luz, primary and Neta, Lucy Pina, additional
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- 2018
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156. An unusual cause of pseudoachalasia
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Paula Borralho, João Freitas, Pedro Pinto-Marques, Carlos Luz, Pedro C. Figueiredo, Tânia Meira, L Novais, Rita G. Sousa, and Ana Isabel Vieira
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Male ,Myotomy ,Endoscopic ultrasound ,Pathology ,medicine.medical_specialty ,Esophageal Neoplasms ,medicine.medical_treatment ,Achalasia ,Nephritis, Hereditary ,Nephropathy ,Diagnosis, Differential ,Young Adult ,Leiomyomatosis ,otorhinolaryngologic diseases ,medicine ,Humans ,Alport syndrome ,Gastrointestinal tract ,Hepatology ,medicine.diagnostic_test ,business.industry ,Gastroenterology ,medicine.disease ,Dysphagia ,Esophageal Achalasia ,medicine.symptom ,Deglutition Disorders ,business - Abstract
Alport syndrome (AS) is a hereditary disease characterized by glomerular nephropathy progressing to end-stage renal disease, frequently associated with sensorineural deafness and ocular abnormalities. Rarely, AS coexists with diffuse leiomyomatosis, a benign proliferation of smooth muscle in the gastrointestinal tract, mostly of the oesophagus, but also of the tracheobronchial tree and the female genital tract. Patients with this association have been shown to have contiguous gene deletion involving both COL4A5 and COL4A6 genes. The authors report the case of a 25-year-old man with AS and long-standing dysphagia. The patient received a renal transplant at the age of 23 because of end-stage renal disease. Clinical assessment as well as endoscopic, manometric and radiologic studies suggested the diagnosis of achalasia, which was treated by Heller's myotomy with Dor fundoplication. Postprocedure dysphagia led to an endoscopic ultrasound that showed diffuse thickening of the second layer, resulting in the hypothesis of oesophageal leiomyomatosis. The diagnosis was confirmed through histological study of endoscopic biopsies and genetic analysis.
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- 2013
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157. The relationship between motor competence and health-related fitness in children and adolescents
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An De Meester, Luis Paulo Rodrigues, Rita Cordovil, Carlos Luz, and Barkley, Jacob
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Male ,Physiology ,Health Status ,CHILDHOOD ,lcsh:Medicine ,Body Mass Index ,FUNDAMENTAL MOVEMENT SKILLS ,Correlation ,Families ,0302 clinical medicine ,Mathematical and Statistical Techniques ,STRENGTH ,Medicine and Health Sciences ,Medicine ,Public and Occupational Health ,Biomechanics ,030212 general & internal medicine ,Child ,lcsh:Science ,Children ,ASSOCIATIONS ,COORDINATION ,Multidisciplinary ,Hand Strength ,Age Factors ,Regression analysis ,Sports Science ,Professions ,YOUTH ,Motor Skills ,OBESITY ,Physical Sciences ,Regression Analysis ,Female ,Statistics (Mathematics) ,Research Article ,Sports ,Adolescent ,Early adolescence ,Research and Analysis Methods ,03 medical and health sciences ,Age groups ,Hand strength ,Humans ,Statistical Methods ,Behavior ,business.industry ,Biological Locomotion ,lcsh:R ,Health related ,Biology and Life Sciences ,Teachers ,PROFICIENCY ,030229 sport sciences ,Physical Activity ,medicine.disease ,Obesity ,Body Height ,PHYSICAL-ACTIVITY ,Age Groups ,Physical Fitness ,People and Places ,Recreation ,Population Groupings ,lcsh:Q ,business ,Body mass index ,Mathematics ,Demography - Abstract
Background and aims In the last twenty years, there has been increasing evidence that Motor Competence (MC) is vital for developing an active and healthy lifestyle. This study analyses the associations between motor competence and its components, with health-related fitness (HRF). Methods A random sample of 546 children (278 males, mean = 10.77 years) divided into four age groups (7?8; 9?10; 11?12; 13?14 years old) was evaluated. A quantitative MC instrument (evaluating stability, locomotor and manipulative skills), a maximal multistage 20-m shuttle-run test and the handgrip test, height and BMI were used in the analyses. Pearson correlations and standard regression modelling were performed to explore the associations between variables. Results Moderate to strong significant correlations (0.49 < r < 0.73) were found between MC and HRF, for both sexes, and correlation values were stable across the age groups. The MC model explained 74% of the HRF variance, with the locomotor component being the highest predictor for the entire sample (? = .302; p < .001). Gender-related differences were found when boys and girls were analysed at each age group. Locomotor MC for girls was the most consistent significant predictor of HRF across all age groups (0.47 < ? < 0.65; all p .001). For boys, significant predictors were locomotor and manipulative MC (0.21 < ? < 0.49; all p < .05) in the two younger age groups (7?8 and 9?10 years) and stability (0.50 < ? < 0.54; all p .001) for the older two age groups (11?12 and 13?14 years). Conclusion These results support the idea that: (1) the relationship between overall MC and HRF is strong and stable across childhood and early adolescence; (2) when accounting for the different MC components, boys and girls show different relationship patterns with HFR across age. 4811-99FE-2ECD | Luis Paulo Rodrigues info:eu-repo/semantics/publishedVersion
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- 2017
158. AVALIAÇÃO DA COMPETÊNCIA MOTORA EM CRIANÇAS COM UM DESENVOLVIMENTO NORMAL: REVISÃO INTEGRATIVA
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Luis Paulo Rodrigues, Carlos Luz, Rita Cordovil, and Gabriela Almeida
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Weakness ,Physical education ,Adolescent ,Physical fitness ,Physical activity ,review ,Criança ,Review ,Education ,Developmental psychology ,Motor competence ,03 medical and health sciences ,Typically developing ,Educação Física ,0302 clinical medicine ,medicine ,030212 general & internal medicine ,Child ,Adolescentes ,Competence (human resources) ,Weight status ,child ,LC8-6691 ,business.industry ,Competência Motora ,Public Health, Environmental and Occupational Health ,Cardiorespiratory fitness ,Revisão ,030229 sport sciences ,Special aspects of education ,GV557-1198.995 ,medicine.symptom ,Psychology ,business ,Sports - Abstract
The development of motor competence (MC) is essential in childhood. In this respect, previous studies have found several positive associations of the MC with physical activity, cardiorespiratory fitness, physical fitness, and perceived physical competence, as well as an inverse association with weight status. The lack of MC during this stage might, therefore, compromise the future adoption of active and healthier lifestyles. This review aimed at listing and examining the different instruments that have been used to evaluate MC in typically developing children, pointing the weakness and strengths from the perspective of Physical Education (PE) teachers. A systematic search of six electronic databases was conducted. Research designs included cross-sectional, longitudinal or experimental/quasi-experimental. Forty-two articles were identified according to the inclusion criteria. A preference for quantitative measures (21 studies) was verified comparatively to a more qualitative approach (13 studies), although eight studies used both measures. Additionally, we have found that 34 studies used standardized protocol tests and eight studies used protocols developed by the authors. In general the protocols exhibited some strong points, however several presented weaknesses that can limit their application in PE classes, such as the excessive amount of time required, the large number of tasks, the ceiling or floor effects, and the fact that not all MC components are simultaneously evaluated. Different instruments and methodologies have been used to evaluate MC. Finally, a quantitative standardized protocol test is suggested, with proper reliability and validity, which can be used by physical education professionals. RESUMO O desenvolvimento da competência motora é essencial na infância. Estudos anteriores encontraram várias associações positivas da CM com a atividade física, aptidão cardiorrespiratória, aptidão física e competência motora percebida, bem como uma associação inversa com o peso. A falta de CM durante a infância pode, portanto, comprometer a futura adopção de estilos de vida ativos e saudáveis. Esta revisão tem como objetivo verificar e examinar os diferentes instrumentos que têm sido utilizados para avaliar CM em crianças com desenvolvimento típico, referindo ainda a fraqueza e os pontos fortes do ponto de vista dos professores de Educação Física. Foi realizada uma pesquisa sistemática em seis bases de dados electrónicas. Foram incluídos estudos transversais, longitudinais e experimentais/quasi-experimentais. Quarenta e dois artigos foram identificados de acordo com os critérios de inclusão. A preferência por medidas quantitativas (21 estudos) foi verificada relativamente a uma abordagem mais qualitativa (13 estudos), embora oito estudos utilizaram ambas as medidas. Além disso, descobrimos que 34 estudos usaram protocolos estandardizados e oito estudos protocolos desenvolvidos pelos autores utilizados. Em geral, os protocolos exibiram alguns pontos fortes, no entanto várias deficiências foram apresentadas que podem limitar a sua aplicação em aulas de educação física, tais como a quantidade excessiva de tempo necessário para avaliar, o grande número de tarefas, os efeitos de teto ou de chão, e o facto de que nem todos as componentes da CM são avaliadas simultaneamente. Diferentes instrumentos e metodologias têm sido utilizadas para avaliar a CM, no entanto não parece existir um instrumento ideal. Por fim, é sugerido um protocolo quantitativo padronizado, com fiabilidade e validade adequada, que pode ser usado por profissionais de educação física.
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- 2017
159. In vitro antifungal activity of bioactive peptides produced by Lactobacillus plantarum against Aspergillus parasiticus and Penicillium expansum
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Fernando Bittencourt Luciano, Federica Saladino, J. Mañes, G. Meca, and Carlos Luz
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0106 biological sciences ,0301 basic medicine ,chemistry.chemical_classification ,Chromatography ,030106 microbiology ,Antimicrobial peptides ,Food spoilage ,food and beverages ,Peptide ,Biology ,biology.organism_classification ,01 natural sciences ,Aspergillus parasiticus ,Amino acid ,03 medical and health sciences ,chemistry ,Biochemistry ,Chromatography detector ,010608 biotechnology ,Penicillium expansum ,Lactobacillus plantarum ,Food Science - Abstract
Food spoilage caused by mycotoxigenic moulds represents an important problem in food security. The antimicrobial peptides are compounds of natural origin constituted by a variable number (5–100) of amino acids held together through peptide bonds. In this work, the cell free supernatants (CFSs) containing peptides obtained from four strains of LAB were lyophilized, filtered and tested to determine the antifungal activity against Aspergillus Parasiticus and Penicillium expansum . CFS obtained by Lactobacillus plantarum showed the highest inhibition activity. CFS was fractionated by size exclusion chromatography and injected into the liquid chromatography coupled to diode array detector. One of the recollected fractions resulted interesting for the presence of three peaks that were purified by the technique of the LC-DAD using a semi preparative C18 column. Finally, the antifungal activity of the purified peptides was studied against A. Parasiticus and P. expansum in liquid medium. The MALDI-TOF/TOF mass spectrometry was used for the peptides identification. The three purified peptides presented an amino acidic sequence identified by a bioinformatics program of SGADTTFLTK, LVGKKVQTF, and GTLIGQDYK. The first peptide purified reduced 58% and 73% the growth of P. expansum and A. parasiticus , respectively, in liquid medium after 48 h incubation.
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- 2017
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160. Consumo de energia e emissões dos gases de efeito estufa na mineração do carvão mineral a céu aberto
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Antonio Carlos Luz Lisbôa, Mateus Guimarães da Silva, and Ronaldo Hoffmann
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- 2017
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161. A lei da escola: sentidos da construção da escolaridade popular através de textos legislativos em Portugal e Santa Catarina – Brasil (1880-1920)
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António Carlos Luz Correia and Vera Lucia Gaspar da Silva
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Santa Catarina ,lcsh:History of education ,Portugal ,Legislação Escolar ,lcsh:LA5-2396 ,Escola Primária ,Educação Comparada - Abstract
Neste trabalho, apresentamos um ensaio de problematização da legislação escolar enquanto fonte significativa, rica e dinâmica para a história e a sociologia da educação. Aqui o olhar sobre a legislação deve ser entendido inserido no plano da crítica das fontes documentais. Tecemos um ensaio de reflexão tendo por campo de análise o ensino primário em Portugal e em Santa Catarina, no Brasil. O enquadramento cronológico abarca grosso modo o período compreendido entre 1880 e 1920. Esta virada de século ganha especial relevo por constituir marco cronológico na expansão e consolidação dos sistemas públicos de ensino.
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- 2012
162. A Igreja do Brasil na preparação do Vaticano II (The participation of the Church from Brazil in the preparation of Vatican II) - DOI: 10.5752/P.2175-5841.2011v9n24p986
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José Oscar Beozzo and Luiz Carlos Luz Marques
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biology ,lcsh:BL1-2790 ,lcsh:BL1-50 ,Helder Câmara. Plano de Emergência. Colegialidade. Vaticano II. Igreja do Brasil. Emergency Plan. Collegiality. Vatican II. Catholic Church in Brazil ,Conta ,lcsh:Religion (General) ,Emergency plan ,biology.organism_classification ,lcsh:Religions. Mythology. Rationalism ,Political science ,lcsh:B ,lcsh:Philosophy. Psychology. Religion ,Humanities ,Preparatory phase - Abstract
Levando–se em conta os leitores do século XXI, ao debruçar-se sobre a participação da Igreja católica brasileira na preparação do Concílio Vaticano II, o presente estudo parte de três perguntas: a) o quê interessa saber sobre a participação brasileira? b) É este um tema relevante? c) Alguns brasileiros participação significativamente na fase preparatória? Para responder apropriadamente a essas questões os autores propõem um conceito diferente de “participação” na preparação do Vaticano II por parte do episcopado brasileiro. O artigo não foca apenas a presença deste ou daquele bispo ou perito nas comissões do Concílio, mas propõe a idéia de que o mais importante foi a auto-preparação, que durante certo tempo permaneceu “latente” e posteriormente se organizou através de um Concílio com um episcopado jovem, com uma média de idade em torno de 54 anos e 11 de experiência como bispo. Por isso, conscientes dos problemas pastorais que a realidade do subdesenvolvimento punha à Igreja, e com uma incipiente experiência de participação colegial, desenvolvida na construção do Plano de Emergência, este episcopado não só vivenciou em profundidade o “evento” conciliar, como foi o primeiro a sair dele organizado para colocá-lo em prática. Daqui a relevância desta reconstrução.Palavras-chave: Helder Câmara. Plano de Emergência. Colegialidade. Vaticano II. Igreja Católica no BrasilAbstractThis article aims to show the contribution of the Brazilian Catholic Church in the preparation of the Second Vatican Council. To fulfill such purpose the present study focus its research in three basic questions: a) what is important to know about the Brazilian participation? b) Is this a relevant topic? C) Some Brazilians participate significantly in the preparatory phase? To respond appropriately to these issues the authors propose a different concept of "participation" in the preparation of Vatican II by the Brazilian episcopate. The article focuses not only the presence of this or that bishop or the expert commissions of the Council, but proposes the idea that the most important was the self-preparation, which for a time remained "latent" and later was organized by a council with a young bishop, with an average age around 11 and 54 years of experience as a bishop. Therefore, aware of the problems that the pastoral reality of underdevelopment put the Church, and with an incipient experience of participating high school, developed in the construction of the Emergency Plan, the bishops not only experienced in depth the "event" to reconcile, as was the first it held out to put it into practice. Key words: Helder Câmara. Emergency Plan. Collegiality. Vatican II. Catholic Church in Brazil.
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- 2012
163. EXPEDIENTE/MASTHEAD
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Luiz Carlos Luz Marques
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General Medicine ,General Chemistry - Published
- 2015
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164. False transfixation of the liver using an endoscopic gastrostomy tube: Do not always believe in radiologic images
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Carla Adriana Santos, Isabel Vieira, Teresa Rodrigues Alves, Gonçalo Nunes, Jorge Fonseca, Carlos Luz, and Luísa Carmona
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Liver surgery ,medicine.medical_specialty ,business.industry ,Gastroenterology ,Endoscopic gastrostomy ,Medicine ,Tube (fluid conveyance) ,Radiology ,business - Published
- 2017
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165. UM TUFÃO CHAMADO JOSÉ COMBLIN
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Luiz Carlos Luz Marques and Newton Darwin de Andrade Cabral
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No campo dos estudos das religiões, há expoentes que são como tufões. Na Teologia, em específico, um tufão euro-tropical tem nome: José Comblin! Europeu, fez-se latino-americano; nascido na Bélgica optou por viver grande parte de sua vida no Brasil, onde Joseph ficou o nosso “bom José”, diríamos com Drummond, embora ele tenha sabido deixar-se guiar pelo Espírito e propor respostas quando esteve diante dos inúmeros “e agora, José?”, que lhe foram colocados por circunstâncias políticas e eclesiais, as bruscas variações atmosféricas que enfrentou, escreveríamos por fidelidade à metáfora que estamos usando. Com o Dossiê José Comblin, acrescido dos instigantes artigos propostos e aprovados para Temática Livre, encerramos o último número do volume 2018 da Paralellus - Revista de Estudos de Religião, do Programa de Pós-graduação em Ciências da Religião, da Universidade Católica de Pernambuco.Enviado: 12-2018 - Aprovado e publicado: 12-2018
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- 2018
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166. 'APENAS 70 ANOS ... DA FUNDAÇÃO DO CONSELHO MUNDIAL DE IGREJAS, CMI (1948-2018)'
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Luiz Carlos Luz Marques and Riccardo Burigana
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Para fomentar um melhor conhecimento do passado e do presente do movimento ecumênico, com particular atenção ao papel do Conselho Mundial de Igrejas, nasceu a ideia de publicar um número da revista Parallelus, a fim de oferecer elementos para entender as dimensões histórico-teológicas do movimento ecumênico no século XX e propor novos caminhos de pesquisa com os quais explorar a memória histórica, em tantos casos tão pouco investigada, do ecumenismo para dar um horizonte ao que muitos estão fazendo pela causa da unidade visível da Igreja. Onze autores, ligados a diferentes centros de pesquisa, na Europa e nos Estados Unidos, responderam ao nosso convite com colaborações de grande valor. Na seção da Paralellus dedicada aos artigos de temática livre, selecionamos, para essa edição, outros seis artigos. O presente número se encerra com uma resenha.
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- 2018
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167. 'APPENA 70 ANNI... DALA FONDAZIONE DEL CONSIGLIO ECUMENICO DELLE CHIESE, CEC (1948-2018)'
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Riccardo Burigana and Luiz Carlos Luz Marques
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Per favorire una migliore conoscenza del passato e del presente del movimento ecumenico, con una particolare attenzione al ruolo del Consiglio Ecumenico delle Chiese, e nata l’idea di pubblicare un numero della rivista Parallelus in modo da offrire degli elementi per comprendere le valenze storico-teologiche del movimento ecumenico nel XX secolo e per proporre nuove piste di ricerca con le quali esplorare la memoria storica, in tanti casi cosi poco indagata, dell’ecumenismo per dare un orizzonte a quanto in tanti stanno facendo per la causa dell’unita visibile della Chiesa. Undici autori, da diversi centri di ricerca, in Italia e all'estero, hanno risposto al nostro invito con collaborazioni di rilevante valore. Nella sezione di Paralellus dedicata agli articoli di tematica libera, abbiamo selezionato, per questa edizione, altri sei articoli. Il numero si chiude con una recensione. Enviado : 12-2018 - Aprovado e publicado : 12-2018
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- 2018
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168. Phylogeny and Mycotoxin Characterization of Alternaria Species Isolated from Wheat Grown in Tuscany, Italy
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Antonio Moretti, Alessandra Villani, Antonia Susca, Antonio F. Logrieco, Giuseppe Meca, Stefania Somma, Carlos Luz, Francesca Anna Ramires, and Mario Masiello
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Section Alternaria ,0301 basic medicine ,Health, Toxicology and Mutagenesis ,Alternariol ,lcsh:Medicine ,Food Contamination ,translation elongation factor 1α ,Toxicology ,medicine.disease_cause ,Article ,alternariol ,allergen alt1a ,Section Infectoriae ,03 medical and health sciences ,chemistry.chemical_compound ,Allergen ,Phylogenetics ,otorhinolaryngologic diseases ,medicine ,Tenuazonic acid ,Food science ,DNA, Fungal ,Mycotoxin ,Phylogeny ,Triticum ,altenuene ,biology ,alternariol-monomethyl ether ,glyceraldeyde-3-phosphate dehydrogenase ,tenuazonic acid ,translation elongation factor 1alpha ,lcsh:R ,Alternaria ,food and beverages ,Mycotoxins ,030108 mycology & parasitology ,Contamination ,biology.organism_classification ,030104 developmental biology ,Italy ,chemistry ,Alternaria species - Abstract
Wheat, the main source of carbohydrates worldwide, can be attacked by a wide number of phytopathogenic fungi, included Alternaria species. Alternaria species commonly occur on wheat worldwide and produce several mycotoxins such as tenuazonic acid (TA), alternariol (AOH), alternariol-monomethyl ether (AME), and altenuene (ALT), provided of haemato-toxic, genotoxic, and mutagenic activities. The contamination by Alternaria species of wheat kernels, collected in Tuscany, Italy, from 2013 to 2016, was evaluated. Alternaria contamination was detected in 93 out of 100 field samples, with values ranging between 1 and 73% (mean of 18%). Selected strains were genetically characterized by multi-locus gene sequencing approach through combined sequences of allergen alt1a, glyceraldeyde-3-phosphate dehydrogenase, and translation elongation factor 1&alpha, genes. Two well defined groups were generated, namely sections Alternaria and Infectoriae. Representative strains were analyzed for mycotoxin production. A different mycotoxin profile between the sections was shown. Of the 54 strains analyzed for mycotoxins, all strains included in Section Alternaria produced AOH and AME, 40 strains (99%) produced TA, and 26 strains (63%) produced ALT. On the other hand, only a very low capability to produce both AOH and AME was recorded among the Section Infectoriae strains. These data show that a potential mycotoxin risk related to the consumption of Alternaria contaminated wheat is high.
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- 2018
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169. Editorial
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Luiz Carlos Luz Marques and Newton Darwin de Andrade Cabral
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Temos a grata satisfacao de apresentar aos leitores mais um numero da Paralellus , a revista do Programa de Pos-graduacao em Ciencias da Religiao, da Universidade Catolica de Pernambuco. Ele e disponibilizado ao publico em contextos internos bastante significativos, uma vez que, neste ano de 2018, a UNICAP esta celebrando seu jubileu de diamante: ja sao 75 anos de atividades – sua primeira Faculdade foi instalada aos 18 de abril de 1943. Simultaneamente, estamos em preparacao para vivenciarmos a marca dos 15 anos do Programa – a ser atingida em fevereiro proximo vindouro – metaforicamente remetendo-nos a memoria das cerimonias de debut , cuja reminiscencia aponta rito de passagem para uma maturidade que, no nosso caso, busca traduzir-se como consolidacao academica. Enviado: 11-2018 - Aprovado e publicado: 11-2018
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- 2018
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170. Devices containing allyl isothiocyanate against the growth of spoilage and mycotoxigenic fungi in mozzarella cheese
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Giuseppe Meca, B. L. Tracz, Renata Ernlund Freitas de Macedo, Karla Carolina Paiva Bocate, Fernando Bittencourt Luciano, Carlos Luz, R. V. Hara, and Keliani Bordin
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0301 basic medicine ,Penicillium digitatum ,Preservative ,biology ,Chemistry ,General Chemical Engineering ,030106 microbiology ,010401 analytical chemistry ,Food spoilage ,General Chemistry ,biology.organism_classification ,Antimicrobial ,Shelf life ,Allyl isothiocyanate ,01 natural sciences ,Aspergillus parasiticus ,0104 chemical sciences ,03 medical and health sciences ,chemistry.chemical_compound ,Food science ,Food Science ,Plastic bag - Abstract
Filter paper and stickers containing allyl isothiocyanate (AIT), as well as pouches containing mustard meal and water for intrinsic production of AIT, were tested against aflatoxigenic strains of Penicillium digitatum CECT 2954 and Aspergillus parasiticus CECT 2681 in sliced mozzarella. Slices were inoculated with either fungus, packaged in plastic bags or plastic trays with one antimicrobial device (2–16 µL/L of AIT). Control groups presented visual growth of P. digitatum after 19.0 ± 1.5 d in bags and 26.1 ± 2.1 d in trays. A. parasiticus was visually detectable after 41.4 ± 1.7 d and 28.4 ± 1.5 d in trays and bags, respectively. AIT‐treated samples did not present visual fungal growth for 60 d. In trays, aflatoxin B₁ was present only in the control; and in plastic bags it was found in the control (6.03 ± 1.23 mg/kg) and in groups treated with 2‐µL/L AIT: filter 0.03 ± 0.05, sticker 0.56 ± 0.13 and pouches 2.02 ± 0.05 mg/kg. Results show that all devices could increase the shelf life and safety of mozzarella. PRACTICAL APPLICATIONS: AIT is a component of brown/black mustard essential oil with antimicrobial activity. This natural substance was used in a newly designed bioactive packaging system to inhibit fungal growth. The device was an effective alternative to inhibit the growth of P. digitatum and A. parasiticus in sliced mozzarella cheese packaged in plastic bags or plastic trays. The antimicrobial sticker could be easily applied in products that are sliced in supermarkets and specialized shops, as well as in the industry avoiding the use of synthetic preservatives, such as sorbates and propionates.
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- 2018
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171. O 'Irmão dos Pobres' esteve lá: O que o 'Pequeno Concílio' de Medellín e Helder Câmara significaram, um para o outro?
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Luiz Carlos Luz Marques and Lucy Pina Neta
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Archbishop ,media_common.quotation_subject ,Gospel ,General Medicine ,Sociology ,Contemporary society ,Humanities ,media_common - Abstract
O texto dedica-se a selecionar e analisar, da imensa produção documental deixada pelo falecido arcebispo de Olinda e Recife, Helder Pessôa Câmara (1909-1999), sinais da importância, para ele, da organização daquela que viria a ser conhecida como Conferência de Medellín e de sua correta recepção. Com o uso do “método” ou “paradigma indiciário” de Ginzburg, foram selecionados textos que vão de 1962 a 1970, todos interligados por “fios-condutores” típicos do pensamento de Dom Helder, através dos quais é possível conhecer a sua evolução enquanto “operador social do sagrado”, na tentativa de construção de uma sociedade contemporânea laica, porém iluminada pelo Evangelho, a serviço da qual ele sonhava uma Igreja servidora, pobre e sem poder. O vivido e o decidido em torno da organização, realização e recepção de Medellín marca, para os autores, o início da fase mais madura das ações de impacto internacional do prelado brasileiro.
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- 2018
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172. Study of the Chemical Components, Bioactivity and Antifungal Properties of the Coffee Husk
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Luigi Castaldo, Jordi Mañes, Giuseppe Meca, Carlos Luz, Anna Gaspari, Alberto Ritieni, Luana Izzo, Giulia Graziani, and Mario Rubino
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Preservative ,ABTS ,010405 organic chemistry ,DPPH ,010401 analytical chemistry ,Trolox equivalent antioxidant capacity ,Environmental pollution ,01 natural sciences ,Husk ,0104 chemical sciences ,chemistry.chemical_compound ,Ingredient ,chemistry ,Polyphenol ,Food science - Abstract
Coffee husk is a fibrous mucilaginous material representing the major residues from the handling and processing of coffee. Currently, coffee husk is discarded which contributes to environmental pollution. Dry and semi-dry coffee husk were extracted by hot infusion and the polyphenol profile was studied by UHPLC and Q-Orbitrap mass spectrometry. Free radical scavenging activity in the infusion was between 26.61 at 31.33 mmol Trolox equivalent antioxidant capacity (TEAC)/kg, as measured by the assay with ABTS and DPPH radical. The results indicated that coffee husk contained 367.45 and 396.04 g/kg of total dietary fiber in dry and semi-dry sample, respectively. While the infusions contain exclusively soluble dietary fiber 0.64 and 0.98 g/L. The methanol extracts of coffee husk presented antimicrobial activity of P. camemberti, P. expansum and P. roqueforti, A. flavus and A. niger, many of their mycotoxins producers. The minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) values for the Penicilliums strains ranged from 6.3 to 50 g/L, whereas on the Aspergillus strains the data detected ranged from 25 to 50 g/L, respectively. This study indicates the possible exploiting of this coffee by-product as potential natural health promoting and preservative ingredient.
- Published
- 2018
- Full Text
- View/download PDF
173. Development and validation of a model of motor competence in children and adolescents
- Author
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Gabriela Almeida, Luis Paulo Rodrigues, Rita Cordovil, and Carlos Luz
- Subjects
Male ,medicine.medical_specialty ,Engineering ,Adolescent ,Psychometrics ,Measurement validity ,Manipulative ,Poison control ,Physical Therapy, Sports Therapy and Rehabilitation ,Motor Activity ,Structural equation modeling ,Motor competence ,Physical education ,Locomotor ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,Child ,Competence (human resources) ,Physical Education and Training ,business.industry ,Reproducibility of Results ,Human factors and ergonomics ,030229 sport sciences ,Measurement reliability ,Quantitative model ,Cross-Sectional Studies ,Motor Skills ,Quantitative instruments ,Physical therapy ,Female ,business ,Stability ,Cognitive psychology - Abstract
Objectives: This study was aimed at developing a quantitative model to evaluate motor competence (MC) in children and adolescents, to be applicable in research, education, and clinical contexts. Design: Cross-sectional. Methods: A total of 584 children (boys n = 300) with ages between 6 and 14 years were assessed using nine well known quantitative motor tasks, divided into three major components (stability, locomotor and manipulative). Structural equation modelling through EQS 6.1 was used to find the best model for representing the structural and measurement validity of MC. Results: The final MC model was composed by three latent factors closely related with each other. Each factor was best represented by two of the initial three motor tasks chosen. The model was shown to give a very good overall fit (X2 = 12.04, p = .061; NFI = .982; CFI = .991; RMSEA= .059). Conclusions: MC can be parsimoniously represented by six quantitative motor tasks, grouped into three interrelated factors. The developed model was shown to be robust when applied to different samples, demonstrating a good structural and measurement reliability. The use of a quantitative protocol with few, simple to administer and well known, motor tasks, is an important advantage of this model, since it can be used in several contexts with different objectives. We find it especially beneficial for physical educations teachers who have to regularly assess their students. 4811-99FE-2ECD | Luis Paulo Rodrigues info:eu-repo/semantics/publishedVersion
- Published
- 2016
174. Differences between Estimation and Real Performance in School-Age Children: Fundamental Movement Skills
- Author
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Carlos Luz, Rita Cordovil, Rui P. Martins, and Gabriela Almeida
- Subjects
Linguistics and Language ,Article Subject ,lcsh:BF1-990 ,050109 social psychology ,Education ,Developmental psychology ,Task (project management) ,03 medical and health sciences ,Behavioral Neuroscience ,0302 clinical medicine ,Developmental and Educational Psychology ,0501 psychology and cognitive sciences ,Motor skill ,Balance (ability) ,Estimation ,School age child ,Movement (music) ,05 social sciences ,lcsh:RJ1-570 ,lcsh:Pediatrics ,030229 sport sciences ,lcsh:Psychology ,Action (philosophy) ,Psychology ,Throwing ,Cognitive psychology - Abstract
Observations in studies of estimation compared to actual performance in motor skills revealed that children are not always accurate and have a tendency to overestimate the maximum distance at which an action can be performed. The relationship between estimated and real motor competences was analyzed for several tasks: standing long jump (SLJ), throwing and kicking, and walking backwards (WB) on a balance beam. Children were asked to predict their maximum distance prior to performing those tasks. Participants were 303 children (160 boys), which were between 6 and 10 years of age (M=8.63, SD=1.16). Children’s estimations were compared with their real performance to determine their accuracy. Absolute error (|real performance − estimation|) and error tendency, that is, the direction of the error (overestimation, accuracy, and underestimation bias), were calculated. Children had a tendency to overestimate their performance and were more conservative in the WB task, a noncommon action. In general, it is possible to conclude that children, in the studied age span, tend to overestimate their performance, particularly in familiar skills. This fact may be determinant to the development of their motor competences, since they are more likely to engage and persist in motor tasks, but it might also be a problem in terms of child safety because it could increase the occurrence of unintended injuries.
- Published
- 2016
175. Digital Game for Teaching and Learning: An Analysis of Usability and Experience of Educational Games
- Author
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Anthony Lins, Rennan Raffaele, Luiz Carlos Luz Marques, Breno José Andrade de Carvalho, and Marcelo M. Soares
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Game mechanics ,Multimedia ,Computer science ,business.industry ,ComputingMilieux_PERSONALCOMPUTING ,Usability ,Artifact (software development) ,Virtual reality ,computer.software_genre ,Usability lab ,Human–computer interaction ,Video game design ,Game Developer ,business ,Set (psychology) ,computer - Abstract
Desbravadores is a 3D game, available for web, which is about History. The game is in first person, with focus on survivor, where the player is a time traveler and needs to save old artifacts, which was lost in our history. To achieve this goal the team proposed an artifact whose interface simulates a time machine, able to take students/players to meaningful moments of different historical periods, immersing it in a realistic environment, initially in 3D and future in “virtual reality”. Both are educational games for awake the interest of Brazilian students and be an interactive tool for teachers in classroom. This study set out to investigate the gameplay and usability of these two games, grounded on the concepts set out by Huizinga, Preece, Rogers and Sharp, and by observation the interactions that users engaged on laboratory tests.
- Published
- 2016
- Full Text
- View/download PDF
176. O CRISTIANISMO E SUAS REFORMAS II / IL CRISTIANESIMO E LE SUE RIFORME II
- Author
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Marques, Luiz Carlos Luz, primary and Burigana, Riccardo, additional
- Published
- 2017
- Full Text
- View/download PDF
177. Oil Shale Pyrolysis: Conversion Dependence of Kinetic Parameters
- Author
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Foltin, Juliana Pedrilho, primary, Lisboa, Antonio Carlos Luz, additional, and de Klerk, Arno, additional
- Published
- 2017
- Full Text
- View/download PDF
178. TRANSFERÊNCIA DE CALOR EM LEITO MÓVEL DE XISTO
- Author
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Carla Cristina Moratori and Antonio Carlos Luz Lisbôa
- Abstract
RESUMO O xisto e uma rocha compacta de origem sedimentar, formada por componentes orgânicos complexos distribuidos numa matriz mineral. A materia orgânica, chamada querogenio, e liberada sob aquecimento em temperaturas acima de 350 o C em retortas. O oleo obtido quando refinado produz destilados com as mesmas caracteristicas encontradas nos de petroleo, sendo considerado uma fonte de energia alternativa. Para o projeto dos reatores de leito movel para pirolise e necessario o conhecimento de varias etapas, inclusive sobre a transferencia de calor entre as particulas de xisto e a corrente gasosa. Estas trocas podem ser avaliadas por modelos matematicos solucionados por metodos numericos. Neste trabalho foram construidos modelos que descrevem os perfis de temperatura no processo em que as particulas de xisto apresentam gradiente de temperatura em seu interior devido ao seu tamanho. As simulacoes foram realizadas por programas em linguagem FORTRAN.
- Published
- 2015
- Full Text
- View/download PDF
179. APLICAÇÃO DE MODELOS MODEL-FREE E MODEL-FITTING NA CINÉTICA DA PIRÓLISE DE XISTO
- Author
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Juliana Pedrilho Foltin and Antonio Carlos Luz Lisbôa
- Abstract
RESUMO A materia orgânica em xisto pirobetuminoso esta estreitamente relacionada com a materia mineral, podendo ser liberada por pirolise. O xisto possui querogenio, materia orgânica que pode ser convertida em oleo de xisto atraves de pirolise. Alternativas estao sendo estudadas para o petroleo, entre as quais o xisto, que por meio do processo de pirolise possibilita produzir os mesmos derivados do petroleo. Este trabalho descreve as caracteristicas da cinetica de pirolise de xisto da Formacao Irati, fornecido pela Unidade de Negocios da Industrializacao do Xisto (SIX), da PETROBRAS, localizada na cidade de Sao Mateus do Sul, Parana. Termogravimetria (TG) foi utilizada para estudar o comportamento da pirolise de xisto utilizando-se temperaturas de 100 °C a 900 °C. Os parâmetros cineticos energia de ativacao e fator pre-exponencial foram calculados usando metodos de Coats-Redfern, Friedman, Kissinger, Kissinger-Akahira-Sunose (KAS) e o metodo de Ozawa (FWO). Os resultados obtidos por cada modelo mostraram que a reacao de pirolise e de primeira ordem, com valores de energias de ativacao e fatores de frequencia proximos aos da literatura. Palavras-chave: cinetica, model-free, pirolise, xisto.
- Published
- 2015
- Full Text
- View/download PDF
180. ESTUDO DA CINÉTICA DE PIRÓLISE DE XISTO
- Author
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Antonio Carlos Luz Lisbôa and Juliana Pedrilho Foltin
- Abstract
RESUMO – Estudos recentes apontam que as reservas petroliferas estao diminuindo e ha um elevado consumo de petroleo em todo o mundo, buscando assim, formas alternativas que podera se tornar, no futuro, uma importante fonte de materias-primas, utilizadas para gerar energia. Em busca de inovacoes e melhorias no processamento, o xisto tornou-se um objeto de estudo em paralelo, resultando em estudos de formacao de oleo e gas. Este estudo tem como finalidade o entendimento da cinetica de decomposicao da materia orgânica de xisto, atraves da Analise Termogravimetrica e Calorimetria de Varredura Diferencial. A materia prima foi fornecida pela Petrobras. Foram estudados diferentes tamanhos de particulas, com taxas de aquecimento para o TGA de 25°C/min para uma temperatura final ate 1000°C e uma temperatura final ate 600°C para o DSC. Os resultados mostram que a taxa de perda de massa e a energia de ativacao da materia orgânica estao relacionadas com a temperatura de pirolise e a taxa de aquecimento.
- Published
- 2015
- Full Text
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181. ESTUDO ESTATÍSTICO DA PRODUÇÃO DE CARVÃO ATIVADO A PARTIR DAS FIBRAS DE SISAL
- Author
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Aparecido dos Reis Coutinho, Manoel Orlando Alvarez Mendez, Antonio Carlos Luz Lisbôa, and Carla Fabiana Rombaldo
- Subjects
Materials science - Published
- 2015
- Full Text
- View/download PDF
182. Activated petroleum coke for natural gas storage
- Author
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Manoel Orlando Alvarez Mendez, Antonio Carlos Luz Lisbôa, Choyou Otani, and Aparecido dos Reis Coutinho
- Subjects
Potassium hydroxide ,Petroleum coke ,Mineralogy ,General Chemistry ,Methane ,chemistry.chemical_compound ,Adsorption ,Volume (thermodynamics) ,chemistry ,Chemical engineering ,Specific surface area ,medicine ,Porosity ,Activated carbon ,medicine.drug - Abstract
Activated Carbons (AC) are characterized by high specific surface area and high pore volume. They are mostly produced by activation of high carbon content precursors, for example petroleum coke (PC). In the present work samples of PC were chemically activated with potassium hydroxide (KOH). The activated PC presented high capacities of N2 adsorption at 77 K, with pore volumes up to 1.5 cm3 g-1 and specific surface area up to 2500 m2 g-1. The pore size distributions obtained indicate that the activated PC has pore sizes concentrated in the supermicroporous range (diameters between 0.7 nm and 2 nm). The temperature and the impregnation ratio used in the activation process were the variables that mostly affected the porosity of the activated PC. The storage capacity of the activated PC, obtained by methane adsorption at high pressure, was 91 v/v (methane volume stored by bed volume).
- Published
- 2006
- Full Text
- View/download PDF
183. O CRISTIANISMO E SUAS REFORMAS II / IL CRISTIANESIMO E LE SUE RIFORME II
- Author
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Riccardo Burigana and Luiz Carlos Luz Marques
- Abstract
O ano de 2017 foi especialmente significativo para os que labutam, como professores, pesquisadores e estudantes de pos-graduacao nas areas das Ciencias da Religiao, Teologia e Historia, pela ocorrencia dos 500 anos do inicio do ciclo de reformas que mudou profundamente a chamada Cristandade medieval, liberando as forcas progressistas das sociedades europeias, dando origem ao mundo moderno, laico, em que a razao e o progresso cientifico passaram a ser mais importantes que a ortodoxia da fe ou da moral. Celebrar o passado, sem fugir de seus desafios, com o olhar voltado para o futuro, e a finalidade do Projeto internacional da pesquisa historico-religiosa “A Heranca da Reforma: ler e reler a Reforma, passados 500 anos de seu inicio”, que um “pool” de instituicoes brasileiras e internacionais lancou, no inicio de 2016 ( https://www.reforma500anos.org/ ). O presente numero da Paralellus continua publicando novos artigos surgidos dessa labuta, incluindo os primeiros apresentados no Congresso Internacional do Recife, ocorrido de 8 a 10 de novembro proximo passado.
- Published
- 2017
- Full Text
- View/download PDF
184. O CRISTIANISMO E SUAS REFORMAS III / IL CRISTIANESIMO E LE SUE RIFORME III
- Author
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Luiz Carlos Luz Marques and Riccardo Burigana
- Abstract
O ano de 2017 foi especialmente significativo para os que labutam, como professores, pesquisadores e estudantes de pós-graduação nas áreas das Ciências da Religião, Teologia e História, pela ocorrência dos 500 anos do início do ciclo de reformas que mudou profundamente a chamada Cristandade medieval, liberando as forças progressistas das sociedades europeias, dando origem ao mundo moderno, laico, em que a razão e o progresso científico passaram a ser mais importantes que a ortodoxia da fé ou da moral. Celebrar o passado, sem fugir de seus desafios, com o olhar voltado para o futuro, é a finalidade do Projeto internacional da pesquisa histórico-religiosa “A Herança da Reforma: ler e reler a Reforma, passados 500 anos de seu início”, que um “pool” de instituições brasileiras e internacionais lançou, no início de 2016 (https://www.reforma500anos.org/). O presente número da Paralellus continua publicando novos artigos surgidos dessa labuta, incluindo os primeiros apresentados no Congresso Internacional do Recife, ocorrido de 8 a 10 de novembro próximo passado.
- Published
- 2017
- Full Text
- View/download PDF
185. Pelvic splenosis—a very unusual location
- Author
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João Palas, A. P. Alves de Matos, Carlos Luz, R. Lameiras, and Miguel Ramalho
- Subjects
medicine.medical_specialty ,Abdominal pain ,medicine.diagnostic_test ,business.industry ,Pelvic pain ,Case Report ,Magnetic resonance imaging ,General Medicine ,Abdominal mass ,030218 nuclear medicine & medical imaging ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Splenic Tissue ,Rare case ,medicine ,Vaginal bleeding ,Radiology ,medicine.symptom ,business ,Arterial phase - Abstract
We present a rare case of pelvic splenosis, and its imaging findings, in a 54-year-old female complaining of pelvic pain and vaginal bleeding for several months. Splenosis is a benign acquired condition defined as heterotopic auto-transplantation of splenic tissue to other compartments of the body and occurs after rupture of the spleen, either traumatic or iatrogenic. Symptoms are unspecific and vary according to the location of the implants; commonly the presenting symptom is abdominal pain or enlarging abdominal mass. Owing to its intrinsic properties and safety, magnetic resonance imaging is a valuable imaging modality, in which the splenosis implants may be securely identified, showing the same signal characteristics and enhancing patterns of the normal spleen, especially visualization of serpiginous enhancement on the arterial phase is virtually diagnostic.
- Published
- 2017
- Full Text
- View/download PDF
186. Link between Motor Competence and Health Related Fitness in Children and Adolescents
- Author
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Luis Paulo Rodrigues, Carlos Luz, Gabriela Almeida, and Rita Cordovil
- Subjects
Pediatrics ,medicine.medical_specialty ,Psychological intervention ,030209 endocrinology & metabolism ,Physical Therapy, Sports Therapy and Rehabilitation ,Article ,low motor competence ,lcsh:GV557-1198.995 ,03 medical and health sciences ,0302 clinical medicine ,Age groups ,medicine ,Orthopedics and Sports Medicine ,Competence (human resources) ,Cardiovascular fitness ,childhood ,lcsh:Sports ,Low motor competence ,high motor competence ,Health related ,030229 sport sciences ,Childhood ,motor competence assessment ,Young age ,Motor competence assessment ,Higth motor competence ,Psychology ,Demography - Abstract
This study examined motor competence (MC) behavior in 6- to 14-year-old children, and investigated the differences in health-related fitness (HRF) between high and low MC groups, according to sex and age. A sample of 564 children (288 males) participated in this study, divided into three age groups (6?8 years; 9?11 years; 12?14 years). Total MC and its three components (stability, locomotor, and manipulative) were assessed with a quantitative instrument. HRF was evaluated using a maximal multistage 20-m shuttle-run test and the handgrip test. Participants were divided into tertiles according to their MC level and high and low MC groups were analyzed. Overall, MC increased across age groups for both sexes, but boys presented better results than girls. The high MC group outperformed their low MC peers in all HRF variables, independent of their age group. Although cardiovascular fitness increased with age for both the high and low MC groups, the differences between these groups were greater in older children compared to younger children, within the study age range. The findings suggest that MC interventions should be considered as an important strategy to enhance HRF, and girls at a young age should be a priority target. 4811-99FE-2ECD | Luis Paulo Rodrigues info:eu-repo/semantics/publishedVersion
- Published
- 2017
- Full Text
- View/download PDF
187. Antimicrobial packaging based on ɛ-polylysine bioactive film for the control of mycotoxigenic fungi in vitro and in bread
- Author
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Fernando Bittencourt Luciano, J. Mañes, Federica Saladino, G. Meca, Carlos Luz, Jorge Calpe, and Mónica Fernández-Franzón
- Subjects
0301 basic medicine ,Preservative ,food.ingredient ,General Chemical Engineering ,030106 microbiology ,Shelf life ,Microbiology ,03 medical and health sciences ,0404 agricultural biotechnology ,food ,2. Zero hunger ,biology ,Food additive ,Biofilm ,food and beverages ,Original Articles ,04 agricultural and veterinary sciences ,General Chemistry ,Antimicrobial ,biology.organism_classification ,040401 food science ,Aspergillus parasiticus ,Original Article ,Penicillium expansum ,Bacteria ,Food Science - Abstract
ɛ‐Poly‐l‐lysine (ɛ‐PL) is a cationic peptide with a broad‐spectrum antimicrobial activity. This study investigates the use of ɛ‐PL as natural antimicrobial to inhibit fungal growth and to reduce aflatoxins (AFs) production. Antifungal activity of starch biofilms with different concentrations of ɛ‐Poly‐l‐lysine (ɛ‐PL) was determined in solid medium against Aspergillus parasiticus (AFs producer) and Penicillium expansum. Then, biofilms were tested as antimicrobial devices for the preservation of bread loaf inoculated with A. parasiticus CECT 2681 and P. expansum CECT 2278. Shelf life and AFs content were examined. Biofilms with concentrations of ɛ‐PL less than 1.6 mg/cm2 showed no fungal growth inhibition in solid medium, while the antifungal activity of the films with greater than 1.6 mg/cm2 of ɛ‐PL was dose dependent. The shelf life of bread inoculated with A. parasiticus was increased by 1 day with the use of films containing 1.6–6.5 mg ɛ‐PL/cm2, while shelf life of bread tainted with P. expansum was increased by 3 day with 6.5 mg ɛ‐PL/cm2. AFs production was greatly inhibited by ɛ‐PL biofilms (93–100%). Thus, ɛ‐PL biofilms could be potentially used as antimicrobial device during bread storage as a natural alternative to the synthetic preservatives. Practical applications Ɛ‐Polylysin is a natural substance from microbial metabolism. Polylysine has a function to prevent a microbe from proliferating by ionic adsorption in the microbe. ɛ‐polylysine has a wide antibacterial spectrum and has an obvious lethal effect on Gram‐positive and Gram‐negative bacteria, yeast, mold, viruses, etc. It has a good antibacterial effect on the Gram‐negative bacteria E. coli and Salmonellae, which are difficult to control with other natural preservatives. ɛ‐Polylysine has already been used generally as a food additive in Japan, Korea and other part of world. In the United States, FDA has recognized the polylysine as a GRAS material. Considered the positive results obtained in the study, this compound could be used for the production of antimicrobial biofilms, applied as separator slices in the loaf bread production, to prevent the growth of the mycotoxigenic fungi A. parasiticus and P. expansum, contributing to reduce the use of the synthetically preservatives in bakery industry and also of the negative impact that these compounds could generate on the health of the end users.
- Published
- 2017
- Full Text
- View/download PDF
188. Brazilian natural fiber (jute) as raw material for activated carbon production
- Author
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Antonio Carlos Luz Lisbôa, Manoel Orlando Alvarez Mendez, Aparecido dos Reis Coutinho, and Carla Fabiana Rombaldo
- Subjects
Materials science ,thermogravimetry ,ativação ,carbonização ,Adsorption ,medicine ,Fiber ,lcsh:Science ,Natural fiber ,Multidisciplinary ,jute fiber ,Carbonization ,termogravimetria ,carbonization ,Microporous material ,adsorção ,Cellulose fiber ,Chemical engineering ,adsorption ,lcsh:Q ,activation ,Mesoporous material ,fibra de juta ,Activated carbon ,medicine.drug - Abstract
Jute fiber is the second most common natural cellulose fiber worldwide, especially in recent years, due to its excellent physical, chemical and structural properties. The objective of this paper was to investigate: the thermal degradation of in natura jute fiber, and the production and characterization of the generated activated carbon. The production consisted of carbonization of the jute fiber and activation with steam. During the activation step the amorphous carbon produced in the initial carbonization step reacted with oxidizing gas, forming new pores and opening closed pores, which enhanced the adsorptive capacity of the activated carbon. N2 gas adsorption at 77K was used in order to evaluate the effect of the carbonization and activation steps. The results of the adsorption indicate the possibility of producing a porous material with a combination of microporous and mesoporous structure, depending on the parameters used in the processes, with resulting specific surface area around 470 m2.g–1. The thermal analysis indicates that above 600°C there is no significant mass loss. A fibra de juta é a segunda fibra natural de celulose mais comum no mundo, especialmente nos últimos anos, em virtude de suas excelentes propriedades físicas, químicas e estruturais. O objetivo deste trabalho foi investigar: a degradação térmica da fibra de juta in natura, e a produção e caracterização do carvão ativado obtido. A produção consistiu na carbonização e ativação com vapor d'água da fibra de juta. Durante a etapa de ativação, o carbono amorfo produzido na fase inicial de carbonização reagiu com gás oxidante, formando novos poros e abrindo os poros fechados, o que aumenta a capacidade de adsorção do carvão ativado. Adsorção de N2 a 77K foi usada para avaliar o efeito das etapas de carbonização e ativação. Os resultados da adsorção indicam a possibilidade de produzir um material poroso com uma combinação de estrutura microporosa e mesoporosa, dependendo dos parâmetros utilizados nos processos, com área superficial específica em torno 470 m2.g–1. A análise térmica indica que acima de 600°C não há perda significativa de massa.
- Published
- 2014
189. The relationship between motor coordination and executive functions in 4th grade children
- Author
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Luis Paulo Rodrigues, Carlos Luz, and Rita Cordovil
- Subjects
Social Psychology ,Cognition ,Executive functions ,Test (assessment) ,Developmental psychology ,Motor coordination ,Task (project management) ,Scale (social sciences) ,Developmental and Educational Psychology ,Cognitive skill ,Task complexity ,Psychology ,Association (psychology) ,Processing speed ,Children - Abstract
In the last decades, there has been a declining trend in different components of children’s motor capabilities and an increasing concern with cognitive skills, but the relationship between motor and cognitive domains remains uncertain. In this study, we aimed to (1) analyse the relationship between motor coordination (MC) and executive functioning, (2) verify the role of processing speed in this relationship and (3) examine the interaction between MC and task complexity. Ninety-six healthy 9- to 11-year-old were evaluated using the Kõrperkoordination Test für Kinder and the planning scale of the Cognitive Assessment System. The results showed moderate associations between the global composite of MC and executive functioning; however, it seems that processing speed plays an important role in this association. The results also show that children with high MC have better cognitive performances particularly in tasks with higher complexity. 4811-99FE-2ECD | Luis Paulo Rodrigues info:eu-repo/semantics/publishedVersion
- Published
- 2014
190. EXPEDIENTE / MASTHEAD
- Author
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Luiz Carlos Luz Marques
- Subjects
General Medicine ,General Chemistry - Published
- 2016
- Full Text
- View/download PDF
191. Antifungal and antimycotoxigenic activity of polylysine biofilms
- Author
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Jorge Calpe, Juan Manuel Quiles, J. Ruiz, Federica Saladino, M. Fernández Franzón, G. Meca, and Carlos Luz
- Subjects
Antifungal ,chemistry.chemical_compound ,chemistry ,medicine.drug_class ,Polylysine ,medicine ,Biofilm ,General Medicine ,Toxicology ,Microbiology - Published
- 2016
- Full Text
- View/download PDF
192. LIDERANÇAS, TESTEMUNHOS E PROFETISMO RELIGIOSO NA AMÉRICA LATINA
- Author
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Marques, Luiz Carlos Luz, primary
- Published
- 2016
- Full Text
- View/download PDF
193. EXPEDIENTE / MASTHEAD
- Author
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Marques, Luiz Carlos Luz, primary
- Published
- 2016
- Full Text
- View/download PDF
194. MÉTODOS, TÉCNICAS E TENDÊNCIAS DE PESQUISA EM ESTUDOS DE RELIGIÃO 2
- Author
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Marques, Luiz Carlos Luz, primary
- Published
- 2016
- Full Text
- View/download PDF
195. A HERANÇA DA REFORMA
- Author
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Marques, Luiz Carlos Luz, primary
- Published
- 2016
- Full Text
- View/download PDF
196. DEVOÇÕES RELIGIOSAS E MANIFESTAÇÕES CULTURAIS
- Author
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Marques, Luiz Carlos Luz, primary
- Published
- 2016
- Full Text
- View/download PDF
197. NOMINATA
- Author
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Marques, Luiz Carlos Luz, primary
- Published
- 2016
- Full Text
- View/download PDF
198. RELIGIÃO E APORTES HISTÓRICOS: FUNDAMENTALISMOS, (IN) TOLERÂNCIA E PROPOSTAS DE DIÁLOGO
- Author
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Marques, Luiz Carlos Luz, primary
- Published
- 2016
- Full Text
- View/download PDF
199. APLICAÇÃO DE MODELOS MODEL-FREE E MODEL-FITTING NA CINÉTICA DA PIRÓLISE DE XISTO
- Author
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FOLTIN, JULIANA PEDRILHO, additional and LISBÔA, ANTONIO CARLOS LUZ, additional
- Published
- 2015
- Full Text
- View/download PDF
200. TRANSFERÊNCIA DE CALOR EM LEITO MÓVEL DE XISTO
- Author
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MORATORI, CARLA CRISTINA, additional and LISBÔA, ANTONIO CARLOS LUZ, additional
- Published
- 2015
- Full Text
- View/download PDF
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