oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 4 )

2019 ( 206 )

2018 ( 343 )

2017 ( 363 )

Custom range...

Search Results: 1 - 10 of 202764 matches for " Elisa Cristina Soares de Carvalho;Xavier "
All listed articles are free for downloading (OA Articles)
Page 1 /202764
Display every page Item
Organogênese de explante foliar de clones de Eucalyptus grandis x E. urophylla
Alves, Elisa Cristina Soares de Carvalho;Xavier, Aloísio;Otoni, Wagner Campos;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000500003
Abstract: the aim of this work was to evaluate the effects of growth regulators tdz [1-phenil-3-(1,2,3-thiadiazol-5-yl) urea], bap (6-benzilaminopurine) e naa (naphthalene acetic acid) on the in vitro propagation by organogenesis from foliar explants of eucalyptus grandis x e. urophylla. depending on the clone used, there were singular responses to growth regulators treatment regarding callusing intensity, texture and color. the best results of the three genotypes used were observed with the tdz (0.5 mg l-1) and naa (0.1 mg l-1) treatment, where 100% of the foliar explants presented callus. the worst results were observed with the bap (0.1 mg l-1) and naa (0.1 mg l-1) treatment. subsequently, considering the regeneration process, the best response was achieved with 1.0 mg l-1 bap, in which 8% of the calli regenerated buds, with an average of 4.2 buds per explant.
Organogênese in vitro a partir de explante caulinar na regenera??o de clones de Eucalyptus grandis W. Hill ex Maiden X E. urophylla S. T. Blake
Alves, Elisa Cristina Soares de Carvalho;Xavier, Aloisio;Otoni, Wagner Campos;
Revista árvore , 2004, DOI: 10.1590/S0100-67622004000500003
Abstract: with the objective of testing in vitro regeneration through organogenesis from stem explants of three hybrid clones of eucalyptus grandis x eucalyptus urophylla, the effects of the growth regulators tdz [1-phenil-3-(1, 2, 3-thiadiazol-5-il)urea], bap (6-benzilaminopurine) and naa (naphthalene acetic acid) were evaluated. in general, a differentiated clone response in relation to intensity, texture, color and oxidation degree of calli was observed due to growth regulator treatments. the best results in callus formation were recorded for the treatments with the combination tdz (0,5 mg l-1) and ana (0,1 mg l-1), achieving 100% of callus formation from the stem explants. compact node structures appeared mainly in the extremities of the stem explants, being those areas responsible for the regeneration of adventitious buds. the best regeneration response was obtained with 1,0 mg l-1 bap.
Suplementa o dietética com Selênio uplementa o e Vitamina E nos parametros seminais de caprinos induzidos à insula o escrotal = Effect of diet supplementation with Selenium and Vitamin E on the seminal parameters of goats induced to scrotal insulation
Guadalupe de Carvalho Xavier,Ana Cristina Marinho Maymone,Pierre de Castro Soares,Valdemiro Amaro da Silva Junior
Acta Scientiarum : Animal Sciences , 2008,
Abstract: Avaliou-se o efeito da suplementa o alimentar com Selênio e Vitamina E sobre os parametros seminais de caprinos submetidos à insula o escrotal (IE). Utilizaramse 12 animais distribuídos, aleatoriamente, em grupos-controle (G1) e Selênio e Vitamina E (G2). Dois meses após o início da suplementa o alimentar nos animais do G2, realizou-seIE durante 18 dias. Após este período (IE), a suplementa o foi mantida por mais 42 dias (fase pós-insula o escrotal, PIE). Para análise seminal, foram efetuadas seis colheitas de sêmen (antes, durante e após a IE). N o foi observado efeito da suplementa o com Selênio e Vitamina E nas características quanti-qualitativas do sêmen. Com exce o do volume seminal, foi observada diferen a significativa (p < 0,05) entre os dias de colheita para ambosos grupos, com redu o de motilidade, vigor, concentra o espermática, integridade do acrossoma e de DNA. Decorridos 42 dias da IE, observou-se normalidade de motilidade, vigor espermático, integridade de acrossoma e de DNA em um animal de cada grupo.Conclui-se que a temperatura elevada nos testículos de caprinos submetidos à IE altera os parametros seminais; a suplementa o com Selênio e Vitamina E, nas concentra es de 0,1 e 0,3 mg kg-1 PV-1, respectivamente, n o é suficiente para minimizar os efeitos deletérios da insula o escrotal induzida. This study evaluated the effect of Selenium and Vitamin E supplementation on the semen parameters of goats induced to scrotal insulation (SI). Twelve animals were used, distributed randomly in twogroups (G1 = Control; G2 = Selenium and Vitamin E). Two months after the start of diet supplementation on G2 animals, it was realized SI was induced during 18 days. After this period (SI), supplementation was maintained during 42 days, corresponding to the postinsulationphase (PSI). For semen analysis, six semen collections were performed (before, during and after SI). There was no effect of Selenium and Vitamin E supplementation on the quanti-qualitative characteristics of the semen. With the exception of semen volume, a significant effect (p < 0.05) was observed between collection days for both groups (G1 and G2), with reduction in motility, vigor, sperm concentration, acrosome and DNA integrity. After 42 days of SI, normal values were observed for motility and sperm vigor, acrosomeand DNA integrity in one animal per group. It can be concluded that the high temperature of the testes of goats subjected to SI alters semen parameters; Selenium and Vitamin E supplementation on goats, in a concentration of 0.1 and 0.3 mg kg-1 BW-1, respectively, wa
The Establishment of Functional Play Behaviors in Children with Autism: Implications for School Inclusion  [PDF]
Daniel Carvalho de Matos, Pollianna Galv?o Soares de Matos, Creuziana Xavier de Araújo, Camila Gon?alves Ribeiro, Eliane Ribeiro Magalh?es de Sousa Fortes de Melo
Creative Education (CE) , 2018, DOI: 10.4236/ce.2018.913140
Abstract: Research on evidence-based methodologies is conducted to expand skills of children with autism. Among the skills, which might be considered important for development, the literature emphasizes functional play. In many children with Autism Spectrum Disorder (ASD), the repertoire related to play is impaired and specialized treatment may address the issue by designing individualized procedures based on one-to-one interactions. Discrete trial teaching may help establishing such repertoire in a structured setting and generalization goals must be delineated to increase the likelihood with which the learned skills will emerge in new environments, such as the classroom, the home and other natural contexts. Thus, it is important that skills be shown in places where other people participate. Principles from Educational Psychology are also relevant in the advisory process to professionals related, for example, to school settings in order to favor inclusion of children with ASD to school routine and the relationship with peers. People related to these educational environments should become knowledgeable of evidence-based procedures in order to increase, with their help, generalization of previously established skills in more structured contexts. This paper assessed the efficacy of a structured intervention with functional play activities in three 4-year-old children with autism or suspect. A binder with pictures depicting actions with the components of each of four or two toy sets was used as resource to orient the target-responses of the study. Correct responses, under the control of pictures, produced access to tokens exchangeable for preferred items. Errors were corrected. Errorless performance occurred for all children with responses under the control of pictures for all and generalization with two toy sets for one. The results extended those from the previous literature and, even though the generalization to other environments such as school was not directly measured, the implications of the research to inclusion practices in the school context and development of verbal behavior were discussed.
Sward Structural Characteristics and Performance of Beef Heifers Reared under Rotational Grazing Management on Campos Grassland  [PDF]
Cezar Wancura Barbieri, Fernando Luiz F. de Quadros, Felipe Jochims, émerson Mendes Soares, Leandro Bittencourt de Oliveira, Régis Maximiliano R. Carvalho, Gabriela Machado Dutra, Felipe Xavier de Lima, Franciele Gusatto
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.57114
Abstract:

This study aimed to evaluate the effect of two rest intervals on structural sward characteristics and productive performance of beef heifers reared on Campos grassland managed on rotational grazing. The treatments were two intervals between grazing of 375 and 750 DD (degree days), based on thermal cumulative sum for leaf expansion of native grasses belonging to two functional groups. The experimental design was a randomized complete block design with two treatments and three replications. The tested animals were beef heifers with initial age of 12 months and average weight of 185.2 ± 17.4 kg. Measures in the pasture were: herbage mass, mass of green leaf blades, stem mass, dead material mass and green leaf allowance. The 750 DD rest interval presented higher herbage mass (24%), higher green herbage mass and 19% more leaves in the canopy. This rest interval also presents a high proportion of dead material and stems in the sward structure. In the other way, the 375 DD rest interval presents better chemical characteristics, with 20% more crude protein in the hand plucking samples. Heifers’ dry matter intake was similar between the rest intervals (2.04% of live weight) and the bite mass was also similar (0.22 g DM per bite) but the animal performance was higher in the 375 DD rest interval. The stocking density showed similarity between treatments with an average of 875 kg/LW/ha. The live weight gain per area was higher in 40 kg/LW/ha (P = 0.117) for 375 DD rest interval, reaching 251 kg/LW/ha produced over the 149 experimental days. Based on these results, we can conclude that the treatment of shortest interval between defoliation gave the highest gain individual

Condi??o periodontal de crian?as e adolescentes com diabetes melito tipo 1
Xavier, Andréa Cristina Vilan;Silva, Ivani Novato;Costa, Fernando de Oliveira;Corrêa, Daniela Soares;
Arquivos Brasileiros de Endocrinologia & Metabologia , 2009, DOI: 10.1590/S0004-27302009000300009
Abstract: objective: to evaluate periodontal condition of diabetic children and its related factors. methods: the plaque index (pi), sites with bleeding on probing (bop), probing depth (pd) and clinical attachment level (cal) were evaluated in all occlusion permanent teeth of 168 non smoking type 1 diabetic children, 13 ± 3.5 years old. the pi and bop evaluations were also performed in deciduous teeth. results: it was observed a prevalence of 20.8% of gingivitis and 5.9% of periodontitis. those individuals with poor metabolic control had higher percentage of affected sites on pd (p = 0.004) and on cal (p = 0.014). patients having more than five years with diabetes mellitus type 1 showed higher percentual of affected sites on pd (p = 0.002), on bop (p < 0.001) and on cal (p = 0.007). conclusions: dm1 duration and poor glycemic control were significantly associated with periodontal disturbances suggesting higher susceptibility of this population in developing dp.
Amostragem, caracteriza??o de sintomas e escala diagramática da mancha graxa dos citros (Mycosphaerella citri) no Rec?ncavo Baiano
Silva, Suely Xavier de Brito;Laranjeira, Francisco Ferraz;Soares, Ana Cristina Fermino;Michereff, Sami Jorge;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782008005000098
Abstract: weather conditions make the rec?ncavo region in the state of bahia, a favorable region to the occurrence of citrus greasy spot (mycosphaerella citri), a disease that hadn't been studied before in brazil. thus, this research aimed to develop a sampling method to quantify its incidence, to characterize its symptoms, and to develop a diagrammatic scale for assessing disease severity. the minimum sample size to estimate greasy spot incidence in leaves (16 plants) was calculated based on a prospective sampling of five leaves per quadrant, four quadrants per tree, and 30 trees per grove, in ten groves. from 320 mature leaves collected in different plants of 11 groves, it was observed a high number of lesions per symptomatic leaf (mean of 131±102), most of them small (mean of 0.014±.,011cm2). greasy spot severity varied from 0,15% to 35,85%, with a mean of 7,3%. based on those severity values, a six level (1%, 2%, 5%, 9%, 18% e 36% of lesioned leaf area) diagrammatic scale was developed. 50 images of symptomatic leaves were showed to evaluators, which estimated the severity with and without the use of the scale. the diagrammatic scale use, slightly increased the estimates accuracy and precision.
Avalia??o da eficiência da propaga??o de Alcantarea imperialis (Bromeliaceae) cultivada in vitro e ex vitro
Aoyama, Elisa Mitsuko;Versieux, Leonardo de Melo;Nievola, Catarina Carvalho;Mazzoni-Viveiros, Solange Cristina;
Rodriguésia , 2012, DOI: 10.1590/S2175-78602012000200007
Abstract: the in vitro cultivation of bromeliads has been considered an effective technique to improve its production. however, there are no studies that compare the efficiency of the methods of in vitro propagation versus ex vitro for the brazilian giant bromeliad alcantarea imperialis (carrière) harms used in landscaping and considered to be endangered due to illegal extraction. the in vitro culture appears as a good alternative to preserve the genetic diversity of this polymorphic species, assuring that the raw material for the contemporary evolution will be available. the aim of this study was to compare the growth of plants of a. imperialis in vitro and ex vitro obtained from seed, establishing the ideal transfer period. the seeds were disinfected before being transferred to culture conditions (culture medium or pinus sp. bark substrate). after the pre-established growing time, in vitro plants were transferred to ex vitro (acclimatization). plants from in vitro cultures showed higher values for all measured parameters compared to those grown ex vitro. the data showed that the acclimation of plants cultivated in vitro for 2, 4, and 6 months showed better growth compared to those acclimated after being cultured in vitro for longer time. these results show the efficiency of the in vitro culture method, indicating the ideal time for the maintenance of the plants in nutrient media, providing important cost-benefit ratio for production.
Correla??o linear e espsacial entre a produtividade de feij?o e a porosidade de um Latossolo Vermelho de Selvíria (MS)
Megda, Marcio Mahmoud;Carvalho, Morel de Passos e;Vieira, Michele Xavier;Andreotti, Marcelo;Pereira, Elaine Cristina;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000200032
Abstract: soil porosity influences plant development since root growth and crop yield are determined by the root depth. the objective of this study was to investigate the linear and spatial variability and correlations between common bean yield and soil porosity. the bean grain yield of the irrigated cultivar carioca iac was analyzed in the growing season 2004/2005, in selviria-ms, as well as macroporosity (ma), microporosity (mi) and total porosity (tp), in a dystroferric red latosol, at four depths: 1 (0.0-0.10 m), 2 (0.10-0.20 m), 3 (0.20-0.30 m) and 4 (0.30-0.40 m). soil and plant data were collected in a geostatistical grid with 135 points spaced 10 m apart, covering an area of 50 x 150 m. the data of the studied attributes did not vary randomly and the values were intermediate to low. they followed well-defined spatial standards, reaching between 11.70-104.40 m. on the other hand, the linear correlation between the plant and soil attributes was low, due to the high number of observations. grain yield had the best linear correlations with ma1b, mi1 and tp3. from the spatial point of view, the inverse correlation between pg and #tp2 was outstanding. at the sites where #tp2 diminished (0.030-0.045 m3 m-3 ) the yield varied from 2,173 to 3,529 kg ha-1 and where it increased (0.045-0.076 m3 m-3 ), the yield was between 1,630 and 2,173 kg ha-1. therefore, the total soil porosity, evaluated in the 0.10-0.20 m layer (#tp2), indicated the importance of the contact root/soil and was in turn a satisfactory indicator of soil physical quality, with a view to the grain yield of irrigated common bean.
Influência da limita??o da amplitude de movimento sobre a melhora da flexibilidade do ombro após um treino de seis semanas
Azevedo, Daniel Camara;Carvalho, Silvia Coda de;Leal, Elisa Westin Prado Soares;Damasceno, Sara Peres;Ferreira, Manuela Loureiro;
Revista Brasileira de Medicina do Esporte , 2008, DOI: 10.1590/S1517-86922008000200007
Abstract: previous research has shown that pre-training aerobic and strength status can influence on the training results, with untrained individuals presenting a more pronounced improvement. no study has investigated this correlation in a flexibility program so far. the purpose of this study was to observe the influence of the range of motion (rom) limitation on rom gain after a six-week shoulder external rotation stretching training. 30 volunteer physiotherapy students, with limited shoulder external rotation rom were randomly assigned to one of three groups: control group (cg), experimental group 1 (eg1), with wider rom limitation, and experimental group 2 (eg2), with narrower rom limitation. subjects in the experimental groups were submitted to a 6-week program of active shoulder external rotation stretching. one-way anova showed a significant difference in mean external rotation rom gains among all three groups (p=0.001), with eg1 having the highest rom increase (30.1° ± 8.6°), followed by eg2 (15.2° ± 7.5°) and cg (1.1° ± 5.8°). the pearson correlation analysis showed a significant negative correlation between previous rom and rom improvement (r= -0.70, p=0.001).the results of our study showed that shoulder external rotation rom limitation influences rom improvement after a six-week stretching program in a healthy young population. subjects with more pronounced rom limitation respond with a more remarkable rom improvement.
Page 1 /202764
Display every page Item


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