Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 53 )

2018 ( 341 )

2017 ( 346 )

2016 ( 396 )

Custom range...

Search Results: 1 - 10 of 199959 matches for " Ivo Francisco de;Oliveira "
All listed articles are free for downloading (OA Articles)
Page 1 /199959
Display every page Item
Characterization of tropical starches modified with potassium permanganate and lactic acid
Takizawa, Fabiano Franco;Silva, Graziela de Oliveira da;Konkel, Francisco Eneias;Demiate, Ivo Mottin;
Brazilian Archives of Biology and Technology , 2004, DOI: 10.1590/S1516-89132004000600012
Abstract: in the present work some tropical starches were modified by an oxidative chemical treatment with potassium permanganate and lactic acid. the native and modified samples were evaluated by mid-infrared spectroscopy, differential dyeing, ph, expansion power, solubility and swelling power, clarity of the pastes, susceptibility to syneresis, carboxyl content and reducing power. all modified samples presented dark blue color, higher expansion power (except corn starch), carboxyl content and reducing power. the solubility of the modified starch granules was very high at 90oc. at this temperature, it was not possible to measure their swelling power. the viscographic analysis showed decrease in peak viscosity and higher degree of cooking instability. the principal component analysis of the mid-infrared spectra allowed separation between native and modified samples due to the presence of carboxyl groups. the expansion was inversely related with amylose content of the starches.
Inclusion of calf implants for the correction of lower limb amyotrophy
Cavalcanti, Thiago de Oliveira Lopes;Pitanguy, Ivo;Ribeiro, Luiz Mário Bonfatti;Oliveira, Francisco Felipe Góis de;
Revista Brasileira de Cirurgia Plástica , 2011, DOI: 10.1590/S1983-51752011000300025
Abstract: background: lower limb amyotrophy is a serious deformity that is often disabling and causes esthetic problems such as asymmetries and changes in the shape and contour of the legs. the present study evaluated the use of silicone implants for the correction of lower limb amyotrophy. methods: women who underwent surgical correction of lower limb amyotrophy with silicone implants between 2002 and 2009 at the plastic surgery service of instituto ivo pitanguy at the 38th nursing service of santa casa da misericórdia, rio de janeiro and at their associated services were retrospectively reviewed. results: five cases were studied and the results were retrospectively assessed. follow-up ranged from 3 months to 2 years after surgery until the last postoperative visit. in 4 of 5 patients, the desired result was obtained after a single surgical procedure, and no patient developed capsular contracture, compartment syndrome, circulatory disorders, neurological disorders, or infections. conclusions: calf augmentation in patients with lower limb amyotrophy did not correct the associated functional deficit, but resulted in a high level of satisfaction with regard to the esthetic improvement of the limb, thus improving the quality of life of these patients.
Euclides Reuter de Oliveira,Paulo César de Aguiar Paiva,Vera Lúcia Banys,Ivo Francisco de Andrade
Ciência Animal Brasileira , 2006,
Abstract: Objetivou-se avaliar a composi o química e a degradabilidade ruminal da matéria seca (MS), da proteína bruta (PB) e de fibra em detergente neutro (FDN), de ra es isoenergéticas e isoprotéicas, com diferentes níveis (0%, 10%, 20%, 30% e 40%) de substitui o do farelo da algod o, por cama de frangos, tendo como substrato a casca de café. Utilizaram-se quatro vacas secas fistuladas no rúmen, nas quais foram incubadas amostras de volumoso, cama de frangos, MDPS e ra es experimentais por 0, 1, 4, 8, 12, 36 e 72 h. Os dados obtidos sobre a degradabilidade foram ajustados para uma regress o n o-linear pelo método de Gauss-Newton. Os resultados obtidos permitiram avaliar que, com o aumento dos níveis de cama de frangos, os valores da degradabilidade efetiva da matéria seca e da fibra em detergente neutro aumentaram em rela o à ra o sem resíduo, observando-se semelhan a da degradabilidade efetiva da proteína bruta. Com base neste experimento, concluiu-se que a substitui o do farelo de algod o pela cama de frangos, até o nível de 40%, é possível, pois n o se observou efeito sobre a degradabilidade efetiva da matéria seca, da proteína bruta e a de fibra em detergente neutro. PALAVRAS-CHAVE: Cama de frangos, degradabilidade, substrato.
Avalia??o sensorial de doce de leite pastoso com diferentes concentra??es de amido
Konkel, Francisco Eneias;Oliveira, Sílvia Maria Rodrigues de;Sim?es, Deise Rosana Silva;Demiate, Ivo Mottin;
Ciência e Tecnologia de Alimentos , 2004, DOI: 10.1590/S0101-20612004000200015
Abstract: the doce de leite is an important regional food produced and consumed in large scale in brazil and argentina. there are many problems related to the quality standardization, mainly the excess of starch addition. in the present paper the sensory evaluation of samples produced in the laboratory containing known amounts of starch and two commercial samples with 1.0 and 7.6% of starch was performed. the ranking test was employed for preference evaluation of the laboratory samples. an acceptance test using an hedonic scale was carried out with 50 panelists that evaluated the samples by considering their color, consistency, taste and sweetness. the commercial samples were evaluated through an action scale. for the samples produced in the laboratory there was no significant difference for preference (p>0.05) in the ranking test and for the preference by attributes it was possible to conclude that the less sweet samples and with intermediary values of color and consistency were preferred. the commercial sample containing 1.0% of starch had an average acceptance of 6.7 whereas the other sample that contained 7.6% of starch had 4.9.
Characterization of Clinical and Environmental Isolates of Cryptococcus neoformans/Cryptococcus gattii Complex Maintained in Yeast Culture Collection in São Paulo, Brazil  [PDF]
Pedro Henrique Magalh?es Cardoso, Bosco Christiano Maciel da Silva, Jairo Ivo dos Santos, Rennan Luiz Oliveira dos Santos, Diniz Pereira Leite Júnior, Marcos Ereno Auler, Luciana da Silva Ruiz, Eriques Gon?alves da Silva, Débora Moreira, Carina Domaneschi, Francisco de Assis Baroni, Marcia de Souza Carvalho Melhem, Marilena dos Anjos Martins, Claudete Rodrigues Paula
Open Journal of Epidemiology (OJEpi) , 2018, DOI: 10.4236/ojepi.2018.82007
Abstract: Objective: As isolates of Cryptococcus are frequently kept collection stocks in institutions, sometimes without proper characterization, we sought to determine the genotype profiles, protease and phospholipase activities “in vitro” and the susceptibility testing for azoles and amphotericin B. Methodology: 84 isolates from several regions of Brazil (40 samples from clinical origin and 44 isolates from environmental origin) were maintained at the microorganism’s bank of the Biomedical Science Institute (ICB-USP) of the São Paulo University, in São Paulo, Brazil. This isolates was submitted fungal strains determination, DNA extraction and purification, determination of genotype by URA5 gene RFLP of CGB-positive isolates, protease and phospholipase activity and susceptibility to antifungals. Results: Of six CGB positive isolates tested by RFLP-PCR, only four presented a genomic profile consistent C. gattii species (VGII), while two other were C. neoformans (VNI and VNIII), indicating the existence of canavanine-resistante C. neoformans isolates in the culture collections. The clinical isolates secreted higher levels of phospholipase and environmental isolates but no differences were observed for the protease levels. Almost all isolates were sensible to azoles and amphotericin B. Conclusion: We point out in this research the existence of C. neoformans strains resistant to canavanine and intrinsic characteristic of C. gatti. These results demonstrate the importance to perform a detailed characterization of isolates kept in culture collections.
Rea??es adversas em pacientes com doen?a de Chagas tratados com benzonidazol, no Estado do Ceará
Pontes, Vania Maria Oliveira de;Souza Júnior, Alcidésio Sales de;Cruz, Francisco Marcondes Tavares da;Coelho, Helena Lutéscia Luna;Dias, Aparecida Tiemi Nagao;Coêlho, Ivo Castelo Branco;Oliveira, Maria de Fátima;
Revista da Sociedade Brasileira de Medicina Tropical , 2010, DOI: 10.1590/S0037-86822010000200015
Abstract: introduction: chagas disease is caused by trypanosoma cruzi and treated with benznidazole (bnz). this drug has the troublesome features of presenting partial effectiveness and high toxicity ranging from hypersensitivity reactions to medullary aplasia. the objective here was to describe and evaluate the occurrence of adverse reactions in chagas disease patients treated with benznidazole in fortaleza, ceará. methods: this was a prospective descriptive study involving 32 chronic chagas patients treated with benznidazole between january 2005 and april 2006. sociodemographic and clinical data were collected through questionnaires, interviews and laboratory tests. blood samples were collected before treatment and after 30 and 60 days of treatment. results: adverse reactions were reported in 28 patients (87.5%) patients and the most frequent of these were pruritus (50%), prickling (43.8%), muscle weakness (37.5%) and skin rash (31.3%). out of the 28 patients with adverse reactions, eight (28.57%) discontinued their treatment. the adverse reactions that culminated with discontinuation of the treatment were prickling (7; 87.5%) or skin eruptions (5; 62.5%). there was a slight increase in aminotransferase levels during the treatment in 9.4% of the patients. conclusions: following up the drug therapy administered to chagas patients is of great importance for prevention and early detection of adverse reactions to drugs.
Parametros genéticos de longevidade e produtividade de fêmeas da ra?a Nelore
Bertazzo, Rodrigo Possa;Freitas, Rilke Tadeu Fonseca de;Gon?alves, Tarcísio de Moraes;Pereira, Idalmo Garcia;Eler, Joanir Pereira;Ferraz, José Bento Sterman;Oliveira, Antonio Ilson Gomes de;Andrade, Ivo Francisco de;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000500003
Abstract: in order to estimate the (co)variance components, heritabilities and genetic correlations of longevity and herd life in females, informations of 56,413 births of females from a nellore cattle herd, from 1950 to 2000, under different rearing and management conditions, were used. it was studied from calf: weaning weight (w205c), yearling weight (w365c), weight in 550 days (w550c), from cows: weaning weight (w205), yearling weight (w365) and weight in 550 days (w550), age at first calving (afc), calving interval (ci), herd life (rl), longevity (long), reproductive efficiency (re), index production (ip), index of metabolic production (imp), sum of index production (sip), sum of index metabolic production (simp). the analysis were performed using the mtdfreml software, estimating (co)variance components, assuming animal model. direct genetic, maternal and permanent environmental effects were analyzed. fixed effects of farm, feeding program, rearing condition, birth calf year, birth calf season and calf sex, were also analyzed. heritability estimates showed similar results among the different analyses, higher (0.24 to 0.75) for w205, w365, w550, w205c, w365c, w550c, ip, imp, afc, rl, long and lower (0 to 0.10) for re, ci, sip and simp. some correlations between maternal genetic effect and the growth traits were negative. in general, estimates of genetic and phenotypic correlations among long and growth traits were negative, suggesting genetic antagonism between long and early maturity, between the long and reproductive and productive traits were positive, suggesting the significant effect of reproductive and productive traits on long.
Composi??o corporal e exigências nutricionais de magnésio, potássio e sódio de cordeiros santa inês e seus cruzamentos com bergamácia, ile de france e texel dos 15 aos 45 kg de peso vivo
Bai?o, Edinéia Alves Moreira;Perez, Juan Ramón Olalquiaga;Bai?o, Afranio Afonso Ferrari;Bai?o, Leonardo Alves;Geraseev, Luciana Castro;Teixeira, Júlio César;Andrade, Ivo Francisco de;Oliveira, André Nunes de;
Ciência e Agrotecnologia , 2004, DOI: 10.1590/S1413-70542004000100021
Abstract: the present work was conducted in the sheep division of animal science department at universidade federal de lavras - m.g., aiming to determine the body composition of lambs and to estimate the nutritional requirements of the mineral macroelements magnesium (mg), sodium (na) and potassium (k) for weight gain of growing lambs. it was used 48 not castrated male lambs, being 12 santa inês x santa inês (si x si), 12 bergamácia x santa inês (be x si), 12 ile de france x santa inês (if x si) and 12 texel x santa inês (te x si). for determination of mg, na and k amounts kept in the animal body, three animals of each genetic group were slaughtered in the beginning of the experiment making as reference animals for the comparative slaughtered technique. the remaining animals of each genetic group were confined until the slaughter where they reached 25, 35 and 45 kg of live weight. the body composition in mg, na and k was estimated by the prediction equations obtained by the regression of the minerals amount logarithm in the empty body in function of the empty body weight logarithm (ebw). the net requirements of mg, na and k for the weight gain were estimated from the derivation of the prediction equations of the body composition. the body composition of mg of genetic grups si differed of the other geneticgrups and the values varied per kilo of empty body weight (ebw) for animals from 15 and 45 kg of live weight was: 0,606 and 0,514 g of mg/kg of ebw for the santa inês pure animals and 0,524 and 0,475 g of mg/kg of ebw for the other genetic groups. in the case of the na and k there were differences in the estimates for the if x si genetic group and the values varied from 1,604 and 1,219 g of na/kg of ebw and from 1,938 and 1,592 g of k/kg of ebw; for the other genetic groups the values varied from 1,665 and 1,270 g of na/kg of ebw and 2,144 and 1,685 g of k/kg of ebw. the net requirement of mg, estimate in this research were: 0,40 g and 0,35 g of mg/kg of lw for santa inês pur
Boron mobility in eucalyptus clones
José, Jackson Freitas Brilhante de S?o;Silva, Ivo Ribeiro da;Barros, Nairam Felix de;Novais, Roberto Ferreira;Silva, Eulene Francisco;Smyth, Thomas Jot;Leite, Fernando Palha;Nunes, Flancer Novais;Gebrim, Fabrício Oliveira;
Revista Brasileira de Ciência do Solo , 2009, DOI: 10.1590/S0100-06832009000600022
Abstract: understanding the magnitude of b mobility in eucalyptus may help to select clones that are more efficient for b use and to design new practices of b fertilization. this study consisted of five experiments with three eucalyptus clones (129, 57 and 58) where the response to and mobility of b were evaluated. results indicated that clone 129 was less sensitive to b deficiency than clones 68 and 57, apparently due to its ability to translocate b previously absorbed via root systems to younger tissues when b in solution became limiting. translocation also occurred when b was applied as boric acid only once to a single mature leaf, resulting in higher b concentration in roots, stems and younger leaves. the growth of b-deficient plants was also recovere by a single foliar application of b to a mature leaf. this mobility was greater, when foliar-applied b was supplied in complexed (boric acid + manitol) than in non-complexed form (boric acid alone). when the root system of clone 129 was split in two solution compartments, b supplied to one root compartment was translocated to the shoot and back to the roots in the other compartment, improving the b status and growth. thus, it appears that b is relatively mobile in eucalyptus, especially in clone 129, and its higher mobility could be due to the presence of an organic compound such as manitol, able to complex b.
Protective effect of divalent cations against aluminum toxicity in soybean
Silva, Ivo Ribeiro da;Corrêa, Tarcísio Fernando C?rtes;Novais, Roberto Ferreira;Gebrim, Fabrício de Oliveira;Nunes, Flancer Novais;Silva, Eulene Francisco da;Smyth, Thomas Jot;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000500027
Abstract: a large proportion of soybean fields in brazil are currently cultivated in the cerrado region, where the area planted with this crop is growing considerably every year. soybean cultivation in acid soils is also increasing worldwide. since the levels of toxic aluminum (al) in these acid soils is usually high it is important to understand how cations can reduce al rhizotoxicity in soybean. in the present study we evaluated the ameliorative effect of nine divalent cations (ca, mg, mn, sr, sn, cu, zn, co and ba) in solution culture on al rhizotoxicity in soybean. the growth benefit of ca and mg to plants in an acid inceptisol was also evaluated. in this experiment soil exchangeable ca:mg ratios were adjusted to reach 10 and 60 % base saturation, controlled by different amounts of cacl2 or mgcl2 (at proportions from 100:0 up to 0:100), without altering the soil ph level. the low (10 %) and adequate (60 %) base saturation were used to examine how plant roots respond to al at distinct (ca + mg)/al ratios, as if they were growing in soils with distinct acidity levels. negative and positive control treatments consisted of absence (under native soil or undisturbed conditions) or presence of lime (caco3) to reach 10 and 60 % base saturation, respectively. it was observed that in the absence of aluminum, cu, zn, co and sn were toxic even at a low concentration (25 μmol l-1), while the effect of mn, ba, sr and mg was positive or absent on soybean root elongation when used in concentrations up to 100 μmol l-1. at a level of 10 μmol l-1 al, root growth was only reverted to the level of control plants by the mg treatment. higher tin doses led to a small alleviation of al rhizotoxicity, while the other cations reduced root growth or had no effect. this is an indication that the mg effect is ion-specific and not associated to an electrostatic protection mechanism only, since all ions were divalent and used at low concentrations. an increased exchangeable ca:mg ratio (at constant soil
Page 1 /199959
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.