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Search Results: 1 - 10 of 261021 matches for " Alberto C.;Santos "
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Petrogenetic and Tectonic Evolution of the Cariris Velhos Event in the Afogados da Ingazeira Region (PE), Alto Pajeú Terrane, Borborema Province
Alberto de Oliveira Sales,Edilton José dos Santos,Edmilson Santos de Lima,Lauro Cézar Montefalco de Lira Santos
Geologia USP : Série Científica , 2011,
Abstract: The Tonian Cariris Velhos event was studied in the area around Afogados da Ingazeira town, Pernambuco State,Northeast Brazil, which is situated within the Alto Pajeú terrane, a Tonian-Ediacaran composite domain of the BorboremaProvince. The exposed rocks belong to the S o Caetano Complex, which is formed of biotite-muscovite paragneisses andquartz-feldspathic gneisses, derived from arkosic or felsic volcanic protoliths, with marble and quartzite intercalations. Thedeformation started with a D1/D2 thrusting episode, when metamorphism ranged from greenschist to amphibolite facies,and was accompanied by emplacement of orthogneiss sheets. The subsequent episode, the D3 phase, had an extensionalcharacter and was marked by intrusion of small metadiorite dikes, which were strongly transposed by the D4 phase, a newepisode of transcurrent deformation. The main structure of the D4 phase is the Afogados da Ingazeira shear zone (ZCAI), migmawhichEdiacaran age was well constrained by the associated Solid o granite, dating from 574 ± 54 Ma. A geochemical study of themetasedimentary rocks shows that the protoliths of the paragneisses located in the southeastern part of the ZCAI are greywackes,whereas those of the northwestern part are greywackes, lithic sandstones and arkoses, although the REE patterns of these samplesnormalized to NASC (North American Shale Composite) show minor differences between them. These metasedimentary rocks havegeochemical signatures and patterns of synorogenic sediments compatible with island and continental arc sources. The geochemicalpatterns of the orthogneisses are also consistent with a magmatic arc environment, the same conclusion reached by other authors withrespect to the metavolcanic rocks of the Alto Pajeú terrane. The occurrence of the pre-transcurrent D3 extensional episode suggests that the D1/D2 thrusting deformation and associated metamorphism may be related to orogenic processes, pointing to the existence of theCariris Velhos orogeny.
Rela??o do padr?o sazonal da vegeta??o com a precipita??o na regi?o de cerrado da Amaz?nia Legal, usando índices espectrais de vegeta??o
Becerra, Jorge Alberto Bustamante;Shimabukuro, Yosio Edemar;Alvalá, Regina Célia dos Santos;
Revista Brasileira de Meteorologia , 2009, DOI: 10.1590/S0102-77862009000200002
Abstract: precipitation is one of the main factors that determine the seasonal dynamics of the vegetation in tropical savanna areas, as the brazilian cerrado. in this work the relationship of the seasonal precipitation with the seasonal behavior of the land use and land cover (lulc) types, mainly savannah physiognomies of the tocantins state, was investigated. we analyzed the savanna seasonal dynamics, including forest and converted areas, with modis/terra vi (vegetation indexes) satellite measurements from january to december 2004 and daily precipitation of 2004 and daily precipitation series from 1969 to 2005. the results of the precipitation analysis show that the study areas exhibited a high seasonality with a dry season from may to september. the analysis of the vi showed that the seasonal dynamic of the savanna formations and the converted areas were similar. the seasonal pattern of these lulc types follows the precipitation pattern, when the lowest vi values were recorded in august of 2004. differently of these lulc types, forest formations do not fitted to the precipitation pattern, this lulc type keep similar vi values along year with light decrease in september of 2004.
IT PROJECT MANAGEMENT ISSUES AT A LARGE CORPORATE BRAZILIAN BANK GEST O DE PROJETOS DE TI EM UM GRANDE BANCO BRASILEIRO
Emerson Antonio Maccari,Cássio Rogério Santos,Denis Alberto Batista,Fábio Hiromitsu Tocura
Future Studies Research Journal : Trends and Strategies , 2009, DOI: 10.7444/future.v1i1.7
Abstract: The world financial segment is that which has most invested in products and services ground on Information Technology (IT). Brazilian banks follow this standard and have resorted to IT in an intense manner so as to foster competitiveness. Within this context, IT project management has become fundamental. In this study, the objective is to identify the impairments IT project management faces at a large Brazilian bank as of the perception of managers from both the IT and business-related areas. To this extent, a case study was undertaken and a semi-structured questionnaire was applied to 10 individuals that occupy leadership positions in the mentioned fields. Results indicate a lack of project management culture giving rise to: issues concerning IT project scope definition; communication setbacks between and within areas; absence of strategic alignment amongst involved areas; difficulty in perceiving an overall picture of projects; mismatch between project prioritization and delivery deadlines. Key-words: Project Management. Information Technology. Banking. O setor financeiro mundial é o que mais tem investido em produtos e servi os apoiado fundamentalmente pela Tecnologia da Informa o (TI). Os bancos brasileiros seguem este padr o e têm utilizado a TI de forma intensa, visando aumentar a competitividade. Neste contexto, a gest o de projetos de TI tornou-se fundamental. Neste estudo, objetiva-se identificar as dificuldades da gest o de projetos de TI em um grande banco brasileiro a partir da percep o dos gestores da área de TI e de Negócio. Para tanto, realizou-se um estudo de caso e aplicou-se um questionário semi-estruturado a 10 indivíduos que ocupam cargo de chefia nas áreas mencionadas. Os resultados apontam para a falta de uma cultura de gest o de projetos, que ocasiona: problemas na defini o do escopo do projeto de TI; falhas comunica o inter e intra áreas; falta de alinhamento estratégico entre as áreas envolvidas; dificuldade de se ter uma vis o global dos projetos; e descasamento entre prioriza o dos projetos e prazos de entrega. Palavras-chave: Gest o de Projetos. Tecnologia da Informa o. Bancos.
Saúde e educa o: um encontro de saberes para a implementa o do projeto "Saúde e Preven o nas Escolas" Health and education: a knowledge meeting for the implementation of the project "Health and Prevention in Schools"
Fernanda A. Alberto,Urania G. Santos,Helena R. G. Q. Schwitzky,Zeila P. C. Togashi
Saúde e Sociedade , 2009,
Abstract:
Resíduos de sorgo e a mineraliza o do nitrogênio em LATOSSOLO VERMELHO fase cerrado
Vasconcellos Carlos Alberto,Marriel Ivanildo Evodio,Santos Fredolino Giacomini dos,Magalh?es Paulo César
Scientia Agricola , 2001,
Abstract: As altera es de manejo exercem significativas modifica es na qualidade e na quantidade da matéria organica, na quantidade e nas formas de N no solo e no processo de mineraliza o de N. Neste trabalho, avaliaram-se a taxa de mineraliza o do N e a varia o de N-NH4+ e N-NO3- durante a decomposi o dos resíduos de duas cultivares de sorgo. Os tratamentos seguiram o esquema fatorial 2x3x2, em blocos ao acaso, com dois manejos de solo, três resíduos culturais, dois níveis de nitrogênio e três repeti es. Tubos de percola o foram montados com a adi o de 20 g dos solos amostrados, misturados com 20 g de areia. A cada conjunto de solo mais areia, adicionou-se 0,1 g do resíduo cultural das cultivares de sorgo, com ou sem 50 mg kg-1 de N, na forma de nitrato de am nio. Após um período de incuba o de sete dias, semanalmente e por 49 dias, o nitrogênio foi extraído com 100 mL de CaCl2 0,01 mol L-1. No percolado, determinaram-se os teores de N-NH4+ e o N- NO3-. A mineraliza o apresentou dependência da cultivar e do N. Os resíduos de sorgo alteraram o tempo e a quantidade mineralizada de nitrogênio. A rela o N-NH4+/ N-NO3- variou com o tempo de incuba o e com a qualidade do resíduo. Houve aumento até aos quinze dias de incuba o e decréscimos nos períodos seguintes. Na ausência de resíduo cultural o solo apresentou maior potencial de mineraliza o na forma de N-NO3.
Resistência vs susceptibilidade a piretróides em Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae): há vencedor?
Oliveira, Eugênio E.;Guedes, Raul N.C.;Corrêa, Alberto S.;Damasceno, Bruno L.;Santos, Camila T.;
Neotropical Entomology , 2005, DOI: 10.1590/S1519-566X2005000600015
Abstract: studies on insecticide resistance evolution usually associate the phenomenon with an adaptative cost to the individual carrying this trait. our objective was to verify if insecticide resistance in a population of sitophilus zeamais motschulsky incurs in fitness cost under an insecticide-free environment. two populations of the species (a susceptible and a pyrethroid resistant population) were submitted to competition against each other for two consecutive generations in the absence of insecticide. a factorial bivariated derivated from an additive series was used in the experimental design with two initial density levels (lower, with 50 individuals of one population and a crescent series of individuals from 0 to 50 from the other population; and higher, with 100 individuals of a population and a crescent series of individuals from 0 to 100 from the other). the total number of adult insects, mortality by deltamethrin and insect body mass for each treatment were recorded. adaptative disadvantage was not found on the resistant population compared with the susceptible population in an insecticide-free environment since both populations showed similar growth rate. this finding brings about practical complications for insecticide resistance management in this species because management strategies based on the interruption of pyrethroid use aiming their future reintroduction may not achieve the desired effects. this may take place because even after a long period without insecticide use, the resistant populations may still maintain themselves as such since there is no perceptible adaptative disadvantage associated with this trait.
Milk line as an indicator of the harvesting time of three hybrid seeds of corn (Zea mays L.)
Santos, Célio Trzeciak dos;Dalpasquale, Valdecir Antoninho;Scapim, Carlos Alberto;Braccini, Alessandro de Lucca e;Krzyzanowski, Francisco Carlos;
Brazilian Archives of Biology and Technology , 2005, DOI: 10.1590/S1516-89132005000200001
Abstract: the experiment was carried out to evaluate the time for harvesting seeds of three hybrids of corn (zea mays l.) at their best physiological quality and the use of the milk line as an indicator of the physiological seed maturity. single hybrids cd 1723 and cd 5501 and double hybrid oc 705 seeds were collected for 59 days, every four days, starting 23 days after female flowering. seed dry weight, moisture content, germination, vigour (cold and accelerated aging tests), black layer formation and seed milk line development were analysed. the harvesting time started 47 days after female flowering with high physiological quality of the seeds identified by a joint analysis of those seven characteristics of them. the milk line at stage 4 proved to be the best indicator of the time to harvest corn seeds for maximum physiological quality, because different stages of milk line development in corn seeds could be easily identified in the filed without any special equipment.
Clerodane diterpenes from leaves of Casearia sylvestris Swartz
Santos, André G. dos;Perez, Carla C.;Tininis, Aristeu G.;Bolzani, Vanderlan da S.;Cavalheiro, Alberto J.;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000500009
Abstract: ethanolic extracts of the leaves of casearia sylvestris yielded a novel clerodane diterpene, 15-hydroxy-3-cleroden-2-one, together with the known diterpenes (-)-hardwickiic acid, reported for the first time from this species, and casearins b and g, previously isolated from c. sylvestris. the structures of all four compounds were determined by spectrometric analysis. the new clerodane diterpene and (-)-hardwickiic acid contain structural features that are completely different from the highly oxygenated casearins and casearvestrins isolated from c. sylvestris.
Características morfológicas, físicas e químicas de frutos de popula??es de umbu-cajazeira no Estado da Bahia
Carvalho, Paulo Cézar Lemos de;Ritzinger, Rogério;Soares Filho, Walter dos Santos;Ledo, Carlos Alberto da Silva;
Revista Brasileira de Fruticultura , 2008, DOI: 10.1590/S0100-29452008000100026
Abstract: the umbu-cajazeira is a fruit crop that occurs in all states of the brazilian semi-arid northeast region, usually scattered in anthropic areas, producing fruits that are used for fresh consumption, or processed into juices and pulp. the potential yield of this species is still unknown, since little is known about its variability regarding fruit characteristics, the main commercial structure of interest. the main objective of this study was to evaluate this variability within three populations in the state of bahia, brazil, being possible, through morphometric and physical and chemical fruit characteristics using cluster analysis, to demonstrate that there is enough genetic diversity between individuals of this species in the sampled areas. among these genotypes, the vavazinho accession is recommended for fresh fruit consumption and the campo grande-5 accession is adequate for pulp processing.
Qualidade fisiológica e composi??o química das sementes de soja com varia??o na cor do tegumento
Santos, Esmael Lopes dos;Póla, José Nivaldo;Barros, Alberto Sergio do Rego;Prete, Cássio Egidio Cavenaghi;
Revista Brasileira de Sementes , 2007, DOI: 10.1590/S0101-31222007000100003
Abstract: the quality and the chemical composition of soybean seed are related to genetic factors, but they can be influenced by the environment. the seed coat, responsible for the protection of the internal organs of the seed, is normally yellow in color, but it can suffer variations from tonalities through natural mutation, showing brown or black color. the objective of this research was to verify the physiological quality and the chemical composition of soybean seeds, when the expression of brown color in the seed coat occurred, in the soybean cultivars such as embrapa 48, brs 156 and brs 133. the imbibition test was carried out at three hour intervals in a 24 hour period; the physiological quality was evaluated by the following tests: germination, accelerated ageing and tetrazolium. the lignin percentage and protein concentration were determined. the expression of the brown color, in seeds of the same cultivar, affected the physiological quality positively, had the slowest imbebition speed and its chemical composition had the greatest concentration of lignin and protein content.
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