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Search Results: 1 - 10 of 113230 matches for " Ad?o;Banzatto "
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Germina??o de sementes de guandu sob efeito da disponibilidade hídrica e de doses subletais de alumínio
Marin, Ado;Santos, Durvalina Maria Mathias dos;Banzatto, David Ariovaldo;Ferraudo, Antonio Sergio;
Bragantia , 2004, DOI: 10.1590/S0006-87052004000100002
Abstract: the aim of the work was to evaluate the effect associated with water stress and aluminum sublethal doses on seed germination of pigeonpea, iapar 43-arat? and iac fava larga cultivars. the experiment was carried out at faculdade de ciências agrárias e veterinárias-unesp, in jaboticabal, s?o paulo state, from march to may 2002. the seeds germinated in germination boxes lined with blotters moistened with solutions of polyethyleneglycol, peg 6000 (0,0; -0,6; -0,9, -1,2 e -1,5 mpa) and aluminum sulphate (0,0; 2,5; 5,0; 7,5; e 10,0 mmol.dm-3). the experimental design was a complete randomized in factorial arrangement 2 x 5 x 5 (2 cultivars; 5 water stresses; 5 aluminum doses) and four replications of 50 seeds. the statistical analysis was complemented with the clustering analysis and principal component analysis. seed germination was evaluated, four and ten days after sowing. the experiment was conducted in germination chamber at 25 °c ± 1 °c. on the tenth day, the seedlings were separated in plumule and radicle for dry mass determination. the water stress appeared to be the critical limiting factor for germination and seedling establishment. the joint effects of water stress and aluminum were significantly greater at moderate water stress, the effects of aluminum being more pronounced only when severe water stress was absent. the germination of the iapar 43-arat? cultivar and the roots growth of the iac fava larga cultivar were reduced, respectively, by water stress and aluminum.
Influência da disponibilidade hídrica e da acidez do solo no teor de prolina livre de guandu
Marin, Ado;Santos, Durvalina Maria Mathias dos;Banzatto, David Ariovaldo;Codognotto, Lucas Mateus;
Pesquisa Agropecuária Brasileira , 2006, DOI: 10.1590/S0100-204X2006000200023
Abstract: the objective of this work was to evaluate the influence of water availability and soil acidity on the levels of free proline, in shoots of the pigeon pea cultivars iapar 43-arat? and iac fava larga. a completely randomized design, in a factorial scheme 2x3x4 (two cultivars, two levels of water availability, four ph levels), with four replicates was used. under severe water restriction, the cultivar iac fava larga can be considered more tolerant, because of its higher accumulation of free proline. the presence of aluminium, associated to severe water restriction, showed a synergistic effect on the levels of free proline.
Estresse salino associado à aplica??o exógena de espermidina no acúmulo de glicina betaína em Guandu
Destro, Moacir Vinícius Pereira;Santos, Durvalina Maria Mathias dos;Vollet, Vanessa Cristiane;Marin, Ado;Banzatto, David Ariovaldo;
Bragantia , 2008, DOI: 10.1590/S0006-87052008000300006
Abstract: this study was undertaken to evaluate the effect of salt stress associated to exogenous spermidine (spd) application on the accumulation of glycine betaine in the pigeonpea genotypes iac fava larga and caqui. the use of this compatible osmolyte as a biochemical-physiological indicator of salinity was also evaluated. the experiment was carried out at unesp, faculdade de ciências agrárias e veterinárias, in jaboticabal (sp), from october to november 2005, in a grow room with irradiance of 190 μmol m-2 s-1, photoperiod of 12 hours, temperature set to 25 oc and the rh to 40%. seeds were sowed in sterile sand with adequate water supply. after 10 days, seedlings were transferred to nutritive solution during 20 days for acclimation. the experiment was then arranged in randomized block design in a 2 x 2 x 4 factorial, corresponding to the genotypes (iac fava larga and caqui), spd rates (control and 0.5 mm) and salt stress (0, 20, 60 and 80 mm nacl). the levels of glycine betaine were determined after 20 days under stress. our results show that glycine betaine can be used as a biochemical-physiological marker of salt stress in the 'iac fava larga'.
Síndrome da Apneia Obstrutiva do Sono Fisiopatologia, Epidemiologia, Consequências, Diagnóstico e Tratamento
Pereira,Ado;
Arquivos de Medicina , 2007,
Abstract: obstructive sleep apnea syndrome (osas) is a condition characterized by repetitive obstruction of the upper airway often resulting in oxygen desaturation and arousals from sleep. the classic manifestation is excessive sleepiness but other symptoms such as unfreshing sleep, poor concentration and fatigue are commonly reported. other consequences of the abnormal breathing during sleep include neurocognitive dysfunction, development of cardiovascular disorders, metabolic dysfunction, and impaired quality of life. osas is a sleep breathing disorder that is most common in obese men over the age of 40 and obese women after menopause. the common risk factors for osas include obesity, enlarged tonsils and adenoids, and craniofacial abnormalities (e.g., retrognathia and micrognathia). the vast majority of osas cases are obese and obesity is known as a crucial risk factor. therapeutical options include weight loss by either caloric restriction or bariatric surgery when the disease is related to obesity and other general measures (alcohol and sedatives such as benzodiazepines avoidance and smoking cessation). the application of nasal cpap remains highly effective for the treatment of all symptoms related to all degrees of osas. the surgery only must be considered in selected cases.
Divis o do Trabalho Pedagógico e Aliena o
Ado José Peixoto
Nuances : Estudos sobre Educa??o , 2009,
Abstract: Esta pesquisa procura discutir a quest o da divis o do trabalho e da aliena o no ambito do trabalho pedagógico. A preocupa o fundamental é mostrar como a fragmenta o do trabalho no ambito da escola, com o pretexto de alcan ar uma maior otimiza o, torna a atividade docente alienante, isto e, mecanica, rotineira, burocratizada e sem sentido. Além de tornar a atividade docente alienante, a parcelariza o do trabalho pedagógico cumpre um papel político, o de exercer um controle sobre os professores e, ao mesmo tempo, baratear o ensino destinado aos filhos dos trabalhadores.
O modelo dewelfare da Europa do Sul: reflex?es sobre a utilidade do conceito
Silva,Pedro Ado e;
Sociologia, Problemas e Práticas , 2002,
Abstract: this article begins by discussing the common characteristics of the welfare model employed in the various southern european countries. it takes the stance that both macro-historic processes and social transformations have been decisive to the development of the model. the second part discusses the similarities between social protection, the job market and the family in the region, as well as the way in which these three aspects interrelate. the author concludes by underlining the importance of a model-based approach, but also argues for the need to develop specific approaches for each case. this is particularly important in the southern european countries, where the way in which well-being is "produced" possesses a set of specific characteristics that have not yet been sufficiently studied in published works.
Estima o da equa o demanda de importa o de bens intermediário para o Brasil no período de 1995 a 2008: um modelo de corre o de erro
Ado Aparecido Ferreira RODRIGUES
Revista da Universidade Vale do Rio Verde , 2012,
Abstract: The aim of this paper is to estimate the demand for intermediate goods imports, based on theestimation method proposed by Engle and Granger (1987). During the first quarter of 1995 to second quarter2008. The results show that the series are all integrated of the same order (I (1)), cointegram and then appliedthe mechanism of error correction, we obtain elasticity’s acceptable, but with differences in relation toprevious work. That may be due to the study period, have passed through intense exogenous changes.
AGRICULTURA MODERNA E NOVOS ESPA OS URBANOS NO CERRADO BRASILEIRO
Júlia Ado Bernardes
Revista Tamoios , 2007,
Abstract: Na contemporaneidade a ciência, a tecnologia e a informa o constituem a base da expans o da agricultura moderna no cerrado brasileiro, implicando em repercuss es na organiza o territorial das atividades agrícolas e urbanas, com conseqüências na divis o social e territorial do trabalho. Os recentes processos que se desenvolvem nesses espa os apontam para a necessidade de se aprofundar o conhecimento dessa nova realidade rural e urbana. Estamos falando de áreas que se integram a redes nacionais e globais de circula o, de lugares que se articulam diretamente à rede econ mica e técnica mundial. No cerrado brasileiro agricultura, urbaniza o e moderniza o se manifestam articulados, surgindo ou transformando-se o urbano em fun o das a es das empresas agrícolas, das características técnicas e sociais, hierarquizando os lugares. As novas formas urbanas que surgem a partir de atividades agrícolas altamente tecnificadas s o dotadas de novas fun es, constituídas pela implanta o de servi os destinados a atender às necessidades da produ o, comercializa o e circula o, bem como ao sistema de comunica es e fluxos de informa es, que possibilitam redu o do tempo e redefinem a espacialidade dos circuitos de produ o, permitindo que a regi o possa acompanhar a velocidade das mudan as e incorporar os elementos que facilitam sua competitividade no mercado internacional. A metodologia proposta consiste em analisar os processos que possibilitam a mudan a do universal em singular e que viabilizam as estruturas que se concretizam em formas espaciais particulares rurais e urbanas, dotadas de fun es também particulares, que refletem a divis o social e técnica do trabalho, a qual pode ser traduzida em uma divis o técnica e social do espa o. Portanto, as categorias processo, forma, fun o e estrutura possibilitam uma interpreta o do espa o n o apenas em si, mas definindo a totalidade concreta, que se encontra em permanente mudan a (Santos, 1985). Tais estrutura es na fronteira de expans o da agricultura moderna em Mato Grosso atendem à nova dinamica de acumula o capitalista. O conhecimento em rela o ao desenvolvimento da agricultura moderna e de suas necessidades em termos de novos territórios urbanos vincula-se a um conjunto de saberes espaciais que envolvem diferentes áreas do conhecimento, onde se destaca a contribui o do enfoque geográfico. Palavras chave: agricultura moderna; espa os urbanos; cerrado brasileiro; características técnicas; características sociais
Downlink Space-Frequency Preequalization Techniques for TDD MC-CDMA Mobile Radio Systems
Silva Ado,Gameiro Atílio
EURASIP Journal on Wireless Communications and Networking , 2004,
Abstract: The paper considers downlink space-frequency preequalizations techniques for time division duplex (TDD) MC-CDMA. We consider the use of antenna arrays at the base station (BS) and analytically derive different preequalization schemes for two different receiver configurations at the mobile terminal: a simple despread receiver without channel equalization and an equal-gain combiner (EGC) conventional receiver. We show that the space-frequency preequalization approach proposed allows to format the transmitted signals so that the multiple access interference at mobile terminals is reduced allowing to transfer the most computational complexity from mobile terminal to the BS. Simulation results are carried out to demonstrate the effectiveness of the proposed preequalization schemes.
Downlink Space-Frequency Preequalization Techniques for TDD MC-CDMA Mobile Radio Systems
Silva Ado,Gameiro Atílio
EURASIP Journal on Wireless Communications and Networking , 2004,
Abstract: The paper considers downlink space-frequency preequalizations techniques for time division duplex (TDD) MC-CDMA. We consider the use of antenna arrays at the base station (BS) and analytically derive different preequalization schemes for two different receiver configurations at the mobile terminal: a simple despread receiver without channel equalization and an equal-gain combiner (EGC) conventional receiver. We show that the space-frequency preequalization approach proposed allows to format the transmitted signals so that the multiple access interference at mobile terminals is reduced allowing to transfer the most computational complexity from mobile terminal to the BS. Simulation results are carried out to demonstrate the effectiveness of the proposed preequalization schemes.
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