Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

4 ( 1 )

2019 ( 100 )

2018 ( 200 )

2017 ( 169 )

Custom range...

Search Results: 1 - 10 of 81023 matches for " Sttela Dellyzete Veiga Franco da;Silva "
All listed articles are free for downloading (OA Articles)
Page 1 /81023
Display every page Item
Armazenabilidade de sementes de cafeeiro colhidas em diferentes estádios de matura??o e submetidas a diferentes métodos de secagem
Veiga, André Delly;Guimar?es, Renato Mendes;Rosa, Sttela Dellyzete Veiga Franco da;Von Pinho, édila Vilela de Resende;Silva, Luiz Hildebrando de Castro e;Veiga, Adriano Delly;
Revista Brasileira de Sementes , 2007, DOI: 10.1590/S0101-31222007000100012
Abstract: the harvesting time and drying methods may influence the quality of coffee seeds during storage. this work was conducted with the objective of understand the effects of maturation stages and drying methods on the physiological quality and storability of coffee seeds. the experiments were performed at the seed analysis and electrophoresis laboratory of the department of agricultural of ufla. the fruits of the cultivar rubi were harvested, depulped and the mucilages removed by fermentation and the seeds washed and let on paper for removal of the water. the seeds were submitted to conventional drying (under shade) and drying in stationary drier at temperature of 35oc. as a control, seeds with no drying were analyzed. the evaluations were done soon after the drying treatments and after four and eight months of storage. the seeds were stored at 10oc in air-tight plastic packages. the germination test, radicle protrusion, seedling dry matter, emergence index speed, electric conductivity, electrophoresis analyses of heat-resistant proteins and quantification of endo-a-mannanase activity were the parameter evaluated. the design was completely randomized with 2 (maturation stages) x 3 (dryings) x 3 (storage time) factorial scheme with four replications. seeds harvested in the cherry stage have greater storage potential than in the green-yellow stage. reduced germination and vigor occur in the coffee seeds harvested in the green yellow stage, when submitted to fast drying. the presence or intensity heat-resistant protein bands is associated with seed drying. greater activity of endo-?-mananase enzyme occurs in seeds harvested in the cherry stage than in the green yellow stage. increase of the activity of endo-?-mananase enzyme occurs during storage.
Effects of different drying rates on the physiological quality of Coffea canephora Pierre seeds
Rosa, Sttela Dellyzete Veiga Franco da;Brand?o Júnior, Delacyr da Silva;Von Pinho, édila Vilela de Resende;Veiga, André Delly;Silva, Luiz Hildebrando de Castro e;
Brazilian Journal of Plant Physiology , 2005, DOI: 10.1590/S1677-04202005000200002
Abstract: desiccation tolerance in seeds depends on the species, development stage and drying conditions, especially the water removal rate. coffea seeds are considered of intermediate performance, because they tolerate relative dehydration compared to orthodox seeds and are sensitive to low temperatures. the objective of this study was to verify the effect of different drying rates on the viability and storability of coffea canephora seeds. a complete randomized experimental design was used, in a factorial 3 x 5 x 2 design, with three drying rates (fast, intermediate and slow), five final mean water contents after drying (51, 42, 33, 22 and 15 %) and two storage temperatures (10 and 20°c). the germination and seed vigor assessments, using radicle protrusion, cotyledon leaf opening, seedling emergence and emergence speed index, were performed shortly after drying and after two and four months storage. it was observed that with reduction in the water content there was reduction in the germination values and seed vigor, for all the drying rates. the greatest reductions in physiological quality occurred when the seeds were dried quickly and the best results were obtained at the intermediate drying rate. there was an effect of drying rate and storage temperature on the physiological quality of the seeds, and lower germination and vigor values were observed in seeds with lower water content stored at 20°c. c. canephora seeds were tolerant to desiccation down to 15 % water content and can be stored for four months at 10°c. a temperature of 20oc can be used to store c. canephora seeds, as long as the water content is not reduced to values below 22 % water content.
Tolerancia de sementes de soja à desseca??o
Veiga, Adriano Delly;Rosa, Sttela Dellyzete Veiga Franco da;Silva, Paulo de Albuquerque;Oliveira, Jo?o Almir de;Alvim, Patrícia de Oliveira;Diniz, Kênia Almeida;
Ciência e Agrotecnologia , 2007, DOI: 10.1590/S1413-70542007000300025
Abstract: the anticipated harvest of seeds after physiological maturity allows the obtaining of the better quality physiological, crop rotation and optimization of the processing structures. seeds do not tolerate dissection over all the stages and acquire tolerance in particular stages during maturation, this acquisition of dissection tolerance may coincide with physiological maturity and in soybean seeds, it take place at r7 stage with moisture close from 45% to 50%. so, the present research was intended to evaluate dissection tolerance of soybean seeds. the seeds were harvested at three phenologic stages, r6, r6/r7 and r7 and were submitted to artificial drying at 35oc to 20% of water content and at 42oc to 13%. a fourth harvest was accomplished with field dried seeds, these being utilized as a control. the quality of seeds was evaluated by tests of germination, electric conductivity and of cold, of dry weight of seedlings and lea protein electrophoresis.the experimental design was completely randomized in factorial scheme with four replicates. the control was compared singly with each treatment. from the results, it follows that both germinability and dissection tolerance of soybean seeds increase with the natural water loss in the field; seeds harvest at r7stage show increased physiologic quality, distinct pattern of lea proteins and greater dissection tolerance than at r6 and r6/r7stages; seeds drying harvested close to maturity induces the synthesis of lea proteins; and seeds harvested at r7 stage present physiological quality and lea protein pattern similar to the ones of filed dried seeds up to 14% of water content.
Inibi??o do desenvolvimento in vitro de embri?es de Coffea por cafeína exógena
Rosa, Sttela Dellyzete Veiga Franco da;Santos, Cíntia Guimar?es dos;Paiva, Renato;Melo, Patrícia Leonardo Queiroz de;Veiga, André Delly;Veiga, Adriano Delly;
Revista Brasileira de Sementes , 2006, DOI: 10.1590/S0101-31222006000300025
Abstract: caffeine, the alkaloid known as 1,3,7 - trimetilxantina, is found in quiescent coffee seeds, amounting to a total of 1.1 to 1.7% in coffea arabica l. and 2 to 3% in coffea canephora pierre, mostly localized in theo endosperm, in the free cytoplasm of cells or complexed with chlorogenic acids. with the physiological function in plants not yet completely understood, caffeine causes an allelophatic effect, either inhibiting germination of a number of species or as an anti-herbivore or a natural pesticide agent. the slow germination of coffee seeds has not yet been elucidated and several causes are pointed to, such as the presence of the endocarp, low water and o2 uptake and presence of natural inhibitors and hormonal balance. although suggested, studies on coffee seed inhibition by the action of endogenous or exogenous caffeine are scarce. thus, the present study was designed to investigate the effect of exogenous caffeine on both germination and embryo development of coffea arabica l. and coffea canephora pierre. the experiment was conducted by utilizing seeds from red ripe berries of the cultivars rubi and apoat? iac-2258. after disinfecting the berries for 30 minutes by soaking in sodium hypochlorite (2% a.i.) and washing three times in distilled water and autoclaved, the embryos were removed and inoculated in a aseptic manner, in petrri dishes with 50% ms medium with the addition of sucrose and supplemented with different of concentrations of caffeine (0.00; 0.05; 0.10; 0.15; 0.20; 0.25; 0.30 and 0.40%). the embryos were maintained in a growth room at 27±20oc and photon flow density of 13μmol.m-2.s-1 for 23 days, when shoot length, root length and seedling fresh mass were evaluated. five days after cultivation, the percentage of radicle emission and that of cotyledons were evaluated, calculating the embryos with open cotyledons and with expanded radicles. a complete randomized experimental design was used six replications per treatment, each replicate consisting of
Enzimas removedoras de radicais livres e proteínas lea associadas à tolerancia de sementes milho à alta temperatura de secagem
Rosa, Sttela Dellyzete Veiga Franco da;Von Pinho, édila Vilela Resende;Vieira, Elisa Serra Negra;Veiga, Ruben Delly;Veiga, Adriano Delly;
Revista Brasileira de Sementes , 2005, DOI: 10.1590/S0101-31222005000200014
Abstract: maize seeds assume desiccation tolerance as they dry naturally during maturation and pre drying at 35oc after their physiological maturity can induce tolerance to artificial drying at 50oc. seeds of 'brs-3060' harvested with 42,2% water content and submitted to increased periods of pre-conditioning, showed enhanced tolerance to 50oc until 25,9% water content when they reached maximum physiological performance. seed quality was evaluated by germination and vigor tests and a-amilase enzyme activity. seeds tolerant and not-tolerant to drying at 50oc were investigated by means of electrophoretic standards of free radical-scavenging enzymes and lea proteins. the scavenger activity enzyme superoxide dismutase, peroxidase and catalase was detected in 5-day old seedling hypocotyl and lea protein was detected in embryonic axes. the results showed that maize seeds tolerant to 50oc are associated to catalase enzyme activity but are less related to superoxide dismutase and peroxidase enzymes activities. lea proteins were not present in maize seeds non tolerant to desiccation and their presence was associated to the physiological performance of tolerant seeds.
Forma??o de mudas de Coffea arabica L. cv. rubi utilizando sementes ou frutos em diferentes estágios de desenvolvimento
Rosa, Sttella Dellyzete Veiga Franco da;Melo, Leonardo Q. de;Veiga, André Delly;Oliveira, Sirlei de;Souza, Carlos Alberto Spaggiari;Aguiar, Vinícius de Araújo;
Ciência e Agrotecnologia , 2007, DOI: 10.1590/S1413-70542007000200013
Abstract: coffee seeds present slow germination and poor storage potential, which makes it difficult seedling formation in a suitable time and under climatic conditions favorable to the crop establishment. the propagation of the coffee plant by means of seedlings coming from seeds is still widely accomplished and reduction of the time for the obtaining a good developed and vigorous seedlings is highly desirable, aiming at a good establishment of the stand and the reduction of the percentage of replanting. considering that coffee seeds achieve their maximum germination at the green yellowish and red ripe stages, the present work was undertaken with the purpose of testing an alternative to obtain seedlings, by using both berries and seeds at several developmental stages. the experiment was conducted in the seedling nursery of the coffee culture sector at the federal university of lavras. the design was in randomized blocks with four replicates and the seedlings were produced in bags with substrate of earth, manure, simple superphosphate and potassium chlorite (standard substrate). nine sowing treatments were tested by utilizing seeds or berries coffea arabica l. cv. rubi: 1) berries at the green stage; 2) berries at the green stage 10 days after harvest; 3 ) berries at the green yellowish stage; 4) berries at the green yellowish stage 10 days after harvest; 5) berries at the red ripe stage; 6) seeds from red ripe berries dried to 15% of the water content; 7) seeds from red ripe berries dried to 15% and without parchment; 8) seeds from red ripe berries, dried to 15% of water parchment and with a parchment and pre-soaked in water for six days; and 9) seed from red ripe berry, dried to 15% without a parchment and pre-soaked in water for six days. one hundred and forty days after the start of the experiment, the percentage of emergence (e), emergency velocity index (evi) and the percentage of seedlings with at least one pair of true leaves (tl) were evaluated. one hundred and eight
Características clínico-demográficas de pacientes hospitalizados com tuberculose no Brasil, no período de 1994 a 2004
Severo, Norma Pinheiro Franco;Leite, Clarice Queico Fujimura;Capela, Marisa Veiga;Sim?es, Maria Jacira da Silva;
Jornal Brasileiro de Pneumologia , 2007, DOI: 10.1590/S1806-37132007000500012
Abstract: objective: to describe the demographic and clinical characteristics of patients with tuberculosis hospitalized in the nestor goulart reis hospital, located in the city of américo brasiliense, brazil. methods: epidemiological investigation by means of an observational, retrospective, descriptive study based on the medical charts of patients diagnosed with tuberculosis and hospitalized between 1994 and 2004. results: there were 1787 patients diagnosed with tuberculosis during the period evaluated. of those, 117 (7%) were females, 1670 (93%) were males; 1215 (68%) were single, separated or widowed. most of the patients (74%) had not completed middle school, and most (63%) were between 30 and 50 years of age. in addition, 61% suffered from alcoholism. the most common occupation was farm worker (25% of the patients), and 70% of the patients were unemployed. the most common clinical form of the disease was the pulmonary form (in 92%). the rate of medical discharge was 60%. the treatment regimen differed from the standard (rifampin, isoniazid and pyrazinamide) in 34% of the cases. conclusions: the profile of the patients with tuberculosis hospitalized in the hospital studied showed that they had special requirements: they were unable to take care of themselves (social cases) and required alternative treatment regimens, which justified their hospitalization. this hospital played an important social role in the treatment and guidance of these patients.
The effect of parenteral administration of copper on the weight gain, erithrograme and the hepatic and renal parenchymas in crossbred (Zebu x European) confined bovines/ Efeito da administra o parenteral de cobre sobre o ganho de peso, eritrograma e parênquimas, hepático e renal, em bovinos mesti os (Zebu x Europeu) confinados
Luiz Ant?nio Franco da Silva,Paulo Henrique Jorge da Cunha,Eurione Ant?nio Garcia da Veiga Jardim,Maria Clorinda Soares Fioravanti
Semina : Ciências Agrárias , 2004,
Abstract: This study evaluated the effect of the parenteral administration of etilenodinitrile tetracetate of calcium and copper on the weight gain, eritrograma and the hepatic and renal parenchymas in confined bovines, using 200 animals, distributed in four groups (G) of 50 (I, II, III and IV). The groups I and II were constituted by bovines with the age of 24 months and the groups III and IV by animals of 12 months, which GI was given 100mg of active copper and GIII 75mg, both by subcutaneous way by the beginning of the study. The other groups were used as the control. The weight measure of the animals of all groups was done from 28 to 28 days during the 112 days of confinement. It was done the eritrograma in ten bovines of each group and the dosage of the hepatic and renal concentration of copper and the hystological evaluation, in the animals of the groups I and II. The values found on the eritrograma showed normality and the hepatic and renal concentrations of copper in bovines with the age of 24 months showed depletion levels. It was not verified differences about the hystological evaluation between the groups I and II. There was significant difference on the weight gain media between the groups I and II. On the groups III and IV, it was not observed difference over the weight gain media. Nesse estudo avaliou-se o efeito da administra o parenteral de etilenodinitrilo tetracetato de cálcio e cobre sobre o ganho de peso, eritrograma e parênquimas, hepático e renais, em bovinos confinados, utilizando-se 200 animais, alocados em quatro grupos (G) de 50 (I, II, III e IV). Os grupos I e II foram compostos por bovinos com 24 meses e os grupos III e IV por animais de doze meses, sendo que o GI recebeu 100 mg de cobre ativo e o GIII 75 mg, ambos por via subcutanea ao início do estudo. Os demais grupos foram utilizados como controle. A pesagem dos animais de todos os grupos foi realizada a cada 28 dias durante os 112 dias de confinamento. Realizou-se o eritrograma em dez bovinos de cada grupo e a determina o das concentra es de cobre hepático e renal, bem como a avalia o histológica em dez animais dos grupos I e II. Os valores obtidos para o eritrograma apresentaram-se dentro da normalidade e as concentra es, hepática e renal do cobre nos bovinos na faixa etária de 24 meses indicaram níveis de deple o. N o foram verificadas diferen as quanto aos achados histológicos entre os grupos I e II. Houve diferen a significativa entre as médias de ganho de peso entre os grupos I (93.38Kg) e II (88,15 Kg). Nos grupos III e IV n o se observou diferen a entre os ganhos médi
Pulmonary Hyalinizing Granuloma: A Case Report  [PDF]
Elias Amorim, Raimunda Ribeiro da Silva, Armando da Veiga Cruz Filho
Open Journal of Thoracic Surgery (OJTS) , 2016, DOI: 10.4236/ojts.2016.64009
Abstract: Pulmonary hyalinizing granuloma (PHG) is a rare nodular disease of unknown etiology. PHG can present with solitary or bilateral lung nodules and be asymptomatic or present with fever, cough, dyspnea, chest pain and hemoptysis.
Analysis of the influence of Manso Dam, In West Marginal, Chapada Dos Guimaraes, State Of Mato Grosso, Brazil
Suelen Veiga Borges,Normandes Matos da Silva
Engenharia Ambiental : Pesquisa e Tecnologia , 2008,
Abstract: The aim of this study is to map the use of land from the orbital remote sensing, marginal in the Reservoir of Manso, Chapada dos Guimaraes, MT, seeking the incorporation of participatory practices in the generation of thematic maps on the class of use and occupation of land, covering the years 1990 and 2005. In the first period considered, information about the use and occupation of land were made to use the Earth Charter of the area under study (1990), which mapped the use of land with the help of aerial photos. For 1990, the use of land and its occupation were obtained through digital image processing of the satellites Landsat-5, for the year 2005 used to image the CBERS-2. He was employee of the classifier Maximum Verossimilhan a (MaxVer), one of the methods of supervised classification more common and more employed in the literature. Comparison of the data, could be observed that there was a significant reduction in class seasonal forest, with 7.45%, followed by class field closed with 1.44% and class exposed soil with 1.37%. They had to increase class pasture with 10.3% and water slide with 0.23%. The reservoir of quiet had little influence in the use and occupancy of the land, however, there was a recovery of the place, mainly in the tourism sector, which contributes to construction of condominiums, marinas and areas for recreation.
Page 1 /81023
Display every page Item

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