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Search Results: 1 - 10 of 15 matches for " Ethur "
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Elementos tra?o na água e em vísceras de peixes da Bacia Hidrográfica Butuí-Icamaqu?, Rio Grande do Sul, Brasil
Porto, Luiz Carlos Santos;Ethur, Eduardo Miranda;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782009005000213
Abstract: heavy metals, also called trace elements, may be essential to the metabolism of living organisms, and at the same time, depending on their concentrations, highly toxic. with the objective to investigate the toxicity of water of the butuí-icamaqu? rivers basin on the border west of rio grande do sul, were analyzed by atomic absorption spectrophotometer, the contents of aluminum, cadmium, chromium, copper, lead, manganese, nickel and zinc in abdominal viscera of fish, collected between june 2007 and february 2008, at selected points in butuí, icamaqu? and uruguai rivers. aluminum, cadmium, manganese and nickel were above the levels considered safe for human consumption and levels near the legal limit were found for chrome and copper. the simultaneous analysis of water samples collected in the same locations showed levels above the legal limits of bromine, chromate, copper, cyanide, lead, manganese, phenols, phosphate and sulfate. these elements, in such concentrations in water and in fish, may compromise the ecosystem or pose risks to human health.
AVALIA O FíSICO-QUíMICA E MICROBIOLóGICA DE FARINHAS OBTIDAS A PARTIR DE VEGETAIS N O CONFORMES à COMERCIALIZA O
Eduardo Miranda ETHUR,Caroline Lima ZANATTA,Cláudia SCHLABITZ
Alimentos e Nutri??o , 2010,
Abstract: Vegetais n o conformes à comercializa o que s o desperdi ados podem ser utilizados como fontes alternativas de nutrientes, com o objetivo de aumentar o valor nutritivo da dieta da popula o, minimizar a fome e solucionar de ciências de minerais. Realizou-se a caracteriza o de minerais e avalia es físico-química e microbiológica de farinhas obtidas a partir de vegetais n o conformes à comercializa o. Após a desidrata o veri cou-se uma redu o de 88,3% na atividade de água da beterraba, 89,7% na de cenoura e de 88,3% nas de espinafre. Através das curvas de secagem, estipulou-se um tempo de secagem de nove horas para as demais secagens de cenoura e dez horas para a beterraba e o espinafre. A desidrata o ocasionou um decaimento nos valores de pH das três amostras de vegetais e elevou a acidez de 0,65 na cenoura in natura para 8,26 no produto desidratado; de 0,45 para 7,12 na beterraba desidratada e de 0,63 para 9,45 no espinafre desidratado. Os resultados das análises microbiológicas nas três farinhas atenderam os padr es exigidos pela legisla o. Os teores dos minerais, encontrados nas três farinhas, foram elevados, quando comparados a outras fontes alimentícias e à ingest o diária recomendada para adultos e crian as de 7 a 10 anos.
Synthesis and Chromatographic Evaluation of the new phase heptakis (3-O-pentafluoropropionyl-2,6-di-O-pentyl)-β-cyclodextrin
Mallmann, Anderson S.;Ethur, Eduardo M.;Silva, Ubiratan F. da;Dalcol, Ionara I.;Morel, Ademir F.;
Journal of the Brazilian Chemical Society , 2010, DOI: 10.1590/S0103-50532010001000029
Abstract: in this work, a new chiral stationary phase heptakis (3-o-pentafluoropropionyl-2,6-di-o-pentyl)-β-cyclodextrin was synthesized and evaluated with a wide variety of volatile chiral compounds. as a result, the new cyclodextrin derivative can be applied to the separation of chiral components of essential oils, as hydrocarbons, ketones, aldehydes, alcohols and of various classes of synthetic chiral compounds, as long chain alcohols, halocarbons, nitrogen and sulfur containing compounds.
Sele??o de Trichoderma spp. visando ao controle de Sclerotinia sclerotiorum, in vitro
Ethur, Luciana Zago;Cembranel, Cláudia Zago;Silva, Antonio Carlos Ferreira da;
Ciência Rural , 2001, DOI: 10.1590/S0103-84782001000500025
Abstract: the objective of this work was to select isolates of trichoderma spp. with potential of antagonism against sclerotina sclerotiorum, in vitro. twelve isolates of trichoderma spp. and three isolates of s. sclerotiorum were used in the techniques "cling film - modified" and "direct confrontation". based on the technique in vitro it the isolates tsm1, j10 and i1 of trichoderma spp.were selected with better antagonistic activity, on the isolates of s. sclerotiorum.
Sele??o de antagonistas fúngicos a Fusarium solani e Fusarium oxysporum em substrato comercial para mudas
Ethur, Luciana Zago;Blume, Elena;Muniz, Marlove Fátima Bri?o;Flores, Maria Georgina Veiga;
Ciência Rural , 2007, DOI: 10.1590/S0103-84782007000600047
Abstract: tests in vitro are usually used for the initial selection of biocontrol agents against soil fungi, lacking methodologies using soil and/or substrate. the objective of this research was to accomplish the mass selection of fungi isolates antagonistic to f. solani and f. oxysporum in commercial substrate for seedlings. two experiments were conducted, with the pathogens f. solani and f. oxysporum, and 98 possible antagonistic fungi of the genera penicillium claviforme, penicillium, aspergillus and cladosporium. the suspension of the pathogens was inoculated in the substrate, in plastic cups, and the suspension of the other fungi was added five days later. the number of colony-forming unit of f. solani and f. oxysporum/g of substrate was counted after nine days. of the 98 isolates used against f. solani, 43% did not differ from the control, and 57% reduced its development in the substrate, with the three best isolates belonging to the genus penicillium claviforme. the three isolates of penicillium claviforme selected for f. solani were also efficient against f. oxysporum.
Determina??o Ultra-sonográfica do índice do Líquido Amniótico em Grávidas Normais, da 12a à 42a Semana de Gravidez
Velho, Maria Teresa de Campos;Morais, Edson Nunes de;Ethur, Anaelena Bragan?a de Moraes;
Revista Brasileira de Ginecologia e Obstetrícia , 2001, DOI: 10.1590/S0100-72032001000400005
Abstract: purpose: to determine the amniotic fluid index (afi) through ultrasound assessment in normal pregnancies and produce a curve of normalcy for the afi from the 12th up to the 42nd week of pregnancy. methods: the study involved 471 measurements on 256 pregnant women, all undergoing normal pregnancies. in pregnancies of more than 20 weeks an estimation was made of the sum of the largest vertical diameters of the amniotic fluid pockets in the four quadrants into which the uterus was divided. in the pregnancies of 20 weeks or less, the sum was obtained from the largest vertical diameters measured in the two halves into which the uterus was divided. results were expressed in centimeters. results: afi was measured (471 measurements) and the results were stratified and grouped by weeks of pregnancy (every two weeks), except the 12th week which was analyzed alone. from an average of 4.7 cm (limits 3.8-5.9 for the 5th and the 95th percentiles) at the 12th week of pregnancy, the afi grew progressively up to the maximum mean of 14.6 cm at the 32nd week (limits: 7.0-2.5 cm). afi presented stable measurements from the 21st up to the 40th week. after that, afi measurements suffered a sharp decrease. the afi cutoff point occurred at the 21st week of pregnancy. the percent increase of afi obtained at the 32nd week, when compared to the 12th was 197.7%, and 2.9% at the end of pregnancy when compared to the measurement of the week taken as reference. conclusion: afi varied during pregnancy. it increased progressively up to the 21st week and then stabilized up to the 40th week. after that, it experienced a sharp decline. the maximum measurement of the afi occurred at the 32nd week. by establishing a normalcy curve for afi it becomes easier to detect changes and allows for a better follow-up of the pregnancy period.
Determina o Ultra-sonográfica do índice do Líquido Amniótico em Grávidas Normais, da 12a à 42a Semana de Gravidez
Velho Maria Teresa de Campos,Morais Edson Nunes de,Ethur Anaelena Bragan?a de Moraes
Revista Brasileira de Ginecologia e Obstetrícia , 2001,
Abstract: Objetivo: determinar o índice do líquido amniótico (ILA) por ultra-sonografia em gesta es normais e construir uma curva de normalidade para o ILA da 12a à 42a semana de gravidez. Métodos: foram realizadas 471 medidas do ILA, em 256 gestantes sem intercorrências clínicas maternas ou fetais. Em gesta es acima de 20 semanas calculava-se a soma dos maiores diametros verticais dos bols es de líquido amniótico (LA) em quatro quadrantes nos quais era dividido o útero. Naquelas gesta es com 20 semanas ou menos o útero era dividido em duas metades. A soma era calculada por meio das medidas obtidas dos maiores diametros verticais medidos nessas duas metades. O resultado da soma foi expresso em centímetros. Resultados: o ILA foi medido (471 medidas) e os resultados foram estratificados e agrupados por intervalos gestacionais (2 em 2 semanas), à exce o da 12a que foi analisada isoladamente. De uma média de 4,7 cm (limites 3,8-5,9 para o 5o e o 95o percentil) na 12a semana gestacional, o ILA cresceu progressivamente até a média máxima de 14,7 cm na 32a semana (limites: 7,0-24,9 cm). Apresentou valores estáveis, em plat , da 21a até a 40a semana, inclusive. Após, os valores do ILA diminuíram acentuadamente. O ponto de corte do ILA foi verificado na 21a semana de gesta o. O incremento percentual do ILA verificado na 32a semana foi de 197,7% em rela o à 12a semana e no final da gesta o foi de 2,9% em rela o à semana tomada como referência. Conclus o: o ILA apresentou varia es no decorrer da gesta o. Cresceu progressivamente até a 21a semana, apresentando, após, valores em plat até a 40a semana. Depois dessa semana, o ILA diminuiu acentuadamente. O pico máximo do ILA ocorreu na 32a semana. Ao se estabelecer uma curva de normalidade para o ILA, em nosso meio, facilita-se a detec o de altera es e, com isso, um melhor acompanhamento e condu o da gravidez.
Vertical transmission of the human papillomavirus: a systematic quantitative review
Medeiros Lidia Rosi,Ethur Anaelena Bragan?a de Moraes,Hilgert Juliana Balbinot,Zanini Roselaine Ruviaro
Cadernos de Saúde Pública , 2005,
Abstract: In order to better understand the exact mode and risk of vertical transmission in asymptomatic pregnant women, as well as the relationship between HPV transmission and mode of delivery, we have proposed this systematic quantitative review of prospective cohort studies. A comprehensive search was performed in the Cochrane Library, MEDLINE, LILACS, CANCERLIT, and EMBASE, as well as in the reference lists from the identified studies. Nine primary studies, which included 2,111 pregnant women and 2,113 newborns, met our selection criteria and were analyzed. A positive HPV test in the mother increased the risk of vertical HPV transmission (RR: 4.8; 95%CI: 2.2-10.4). We also observed a higher risk of HPV infection after vaginal delivery than after cesarean section (RR: 1.8; 95%CI: 1.3-2.4). The results of this meta-analysis showed the HPV DNA-positive rate only after birth, but an HPV DNA-positive neonatal sample does not necessarily indicate infection; it could merely indicate contamination (perinatal HPV contamination may have occurred). Infants born through vaginal delivery were at higher risk of exposure to HPV.
Sele o de Trichoderma spp. visando ao controle de Sclerotinia sclerotiorum, in vitro
Ethur Luciana Zago,Cembranel Cláudia Zago,Silva Antonio Carlos Ferreira da
Ciência Rural , 2001,
Abstract: Este trabalho teve por objetivo selecionar isolados de Trichoderma spp. com potencial de antagonismo sobre o fitopatógeno Sclerotina sclerotiorum, in vitro. Foram utilizados doze isolados de Trichoderma spp. e três isolados de S. sclerotiorum nas técnicas "papel celofane - modificada" e "confronta o direta". Com o desenvolvimento das técnicas in vitro, foram selecionados os isolados TSM1, J10 e I1 de Trichoderma spp. com melhor atividade antagonista, sobre os isolados de S. sclerotiorum.
Fungos antagonistas a Sclerotinia sclerotiorum em pepineiro cultivado em estufa
Ethur, Luciana Z.;Blume, Elena;Muniz, Marlove;Silva, Antonio Carlos F. da;Stefanelo, Daniela R.;Rocha, Edileusa K. da;
Fitopatologia Brasileira , 2005, DOI: 10.1590/S0100-41582005000200004
Abstract: white mold caused by sclerotinia sclerotiorum may severely damage vegetables grown in greenhouses. to develop a biological control program for this pathogen proper antagonists are needed. this work aimed to select efficient fungi antagonists for controlling s. sclerotiorum on cucumber (cucumis sativus) grown in greenhouses, and to evaluate the effect of the antagonist on the growth of the vegetable. an isolate of s. sclerotiorum obtained from cucumber and 112 fungi isolates belonging to four genera were used: trichoderma, fusarium, penicillium, and aspergillus. for the in vitro experiment, the cellophane method was used and eight trichoderma virens isolates were selected that had inhibited the pathogen growth by 94 to 100%. greenhouse experiments used sterilized and non-sterilized substrate in plastic cups and non-sterilized substrate in plastic bags. the substrate was inoculated with s. sclerotiorum and the eight isolates of t. virens were used as antagonists. all eight isolates controlled damping-off of plants caused by s. sclerotiorum, but the effect on cucumber growth varied according to the isolate and the substrate treatment.
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