Produtividade de alface cv Lucy Brown influenciada por períodos de convivência com plantas infestantes e potencial alelopático da tiririca

This work was divided in two experiments, the first one to evaluate the lettuce productivity (cv Lucy Brown - American group) influenced by increasing and decreasing periods of coexisting with harmful plants, and a second moment, aiming at to evaluate the allelopathic potential of nutsedge (Cyperus rotundus L.) on the initial lettuce development.The experimental treatments constituted of six increasing and decreasing periods of coexisting with harmful plants, or control of it in the culture, considered from the plantation of the lettuce; being separate in two groups: Weeds and Clean weeds.In the second moment of the experiment, purple nutsedge aerial parts had been collected in the area of experiment 1, that drying had been after triturated and immersed in methylic alcohol P. A in ratios 10, 5,0 and 2.5% (w/ v) and later impregnated in germination paper, where had been placed lettuce seeds.The analyses of results, one concludes that the presence of C. rotundus plants can intervene with the germination, growth and development of the plants of lettuce cv Lucy Brown, and that initial periods of coexisting between the culture and the harmful are associate to an induction of the foliar area development, and can not express the reduction of productivity in the end of the cycle. Drawn out periods of competition induce the reduction of the lettuce foliar area, and then they will intervene with the yield productivity.

Períodos de dessecação de Urochloa ruziziensis e seu reflexo na produtividade da soja RR

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Toxoplasma gondii: Infection natural congenital in cattle and an experimental inoculation of gestating cows with oocysts

Two studies, of a natural infection and an experimental infection, were performed in order to study congenital transmission of Toxoplasma gondii in cattle. In the first study, 50 fetuses were harvested from gestating cows that were eutanasied at a municipal slaughterhouse in Jaboticabal, São Paulo state, Brazil. In the second study, 11 gestating cows were divided into four groups for inoculation with T. gondii: GI consisted of three cows inoculated with 1.0 x 10(5) oocysts during their first trimester of gestation; GII consisted of three cows inoculated with 1.0 x 10(5) oocysts during their second trimester of gestation; GIII consisted of three cows inoculated with 1.0 x 10(5) oocysts during their last trimester of gestation; and GIV consisted of two control cows, one during its first and the other during its second trimester of gestation. In both studies, the presence of T. gondii was confirmed both indirectly by immunofluorescence assay (IFAT). In the natural infection experiment, 18% (9/50) of the gestating cows were confirmed to have specific antibodies (IFAT - 1:64) against T. gondii. The bioassay was able to diagnose the presence of T. gondii in the tissue samples from three calves. In the second experiment, the nine cows from groups I, II and III presented with specific antibodies (IFAT) against T. gondii. In contrast, T. gondii could not be detected by IFAT, histopathological examination or the bioassay in any of the nine calves born to cows experimentally infected with T. gondii oocysts. Based on the results from both studies, we conclude that congenital infection of T. gondii in cattle, while infrequent, does occur naturally. The pathogenicity of the strain of T. gondii may influence the likelihood of this route of transmission. (C) 2010 Elsevier B.V. All rights reserved.

Produção, acúmulo e decomposição da serrapilhadeira e repartição da precipitação pluviométrica por espécies da caatinga

This study aimed to establish patterns of dynamics of litter and redistribution of rainfall of Caatinga vegetation. Sampling was done monthly for twenty three months in four areas: degraded, successional primary stage, secondary stage and late stage. We installed 72 collectors of 1.0 mx 1.0 m, with nylon fabric background in three areas. Litter deposited was fractionated into leaves, twigs, reproductive structures and miscellaneous, dried and weighed. To assess the stock of accumulated litter we used metal frame with dimensions of 0.5 mx 0.5 m, thrown randomly and collected monthly, taken to the laboratory for oven drying and weighed. To evaluate the decomposition, 40g of litter were placed in nylon bags (litterbags) mesh 1 mm ², dimensions 20.0 x 20.0 cm, being distributed on the soil surface and removed monthly, cleaned, dried and weighed. To evaluate the contribution of rainfall we used interceptometers installed 1.0 m above the ground surface, distributed under the canopy of six species of the caatinga, which evaluated the stemflow through collecting system installed around the stems of these species. The deposition of litter in the primary stage was 2.631,26 kg ha-1; 3.144,89 kg ha-1 in the secondary stage; 3.144,89 kg ha-1 in the late stage. The fraction of leaves was the largest contributor to the formation of litter in three stages. The degraded area showed greater accumulation of litter and decomposition has been sluggish during the dry period. We conclude that occurred greater litterfall in later stages. The late successional stage showed faster decomposition of litter, the evidence that is a better use of litter in nutrient cycling processes and incorporation of organic matter to the soil. The time required to decompose 50 % of the litter in the later stages of succession was lower indicating greater speed of release and reuse of nutrients by the vegetation. The specie jurema preta with less leaf area and consists of leaflets, showed greater internal precipitation in rain events of greater magnitude. The stemflow was not influenced by DAP and basal area. The water lost by trapping represented the largest proportion of total rainfall in all species studied

Crescimento inicial e morfologia foliar em plantas de Enterolobium contortisiliquum (Vell.) Morong. E Erythrina velutina Mart. ex Benth, sob estresse hídrico

The Caatinga is the predominant vegetation type in semi-arid region of Brazil, where many inhabitants depend on hunting and gathering for survival, obtaining resources for: food and feed, folk medicine, timber production, etc. It‟s the dry ecosystem with highest population density in the world. The early stages of development are the most critical during the life cycle of a flowering plant and they‟re primordial to its establishment in environments exposed to water stress. Information about adjustments to the growth of the species, correlated with their studies of distribution in Seridó oriental potiguar, are an important ecological and economic standpoint, because they provide subsidies for the development of cultivation techniques, to programs of sustainable use and recovery of degraded areas. This thesis aimed to study the initial growth and foliar morphology in plants like Enterolobium contortisiliquum (Vell.) Morong. (tamboril) and Erythrina velutina Mart. ex Benth (mulungu), species of occurrence in the Caatinga, under water stress. After sowing and emergency, the seedlings were exposed to three water regimes: 450 (control), 225 (moderate stress) and 112.5 (severe stress) mm of water slide for 40 days. Seeding occurred in bags of 5 kg and after the establishment of seedlings thinning was carried out leaving a plantlet per bag. At the beginning the waterings occurred daily with distilled water, passing to be on alternate days after thinning. Twenty and forty days after the thinning seedlings collections were held to be done analysis of growth and biomass partition. When compared to the control group, the treatments with water stress showed reduction in the growth of the aerial part, growth of the greater root, number of leaves and leaflets, dry leaf area and total phytomass in both species, but in general, this effect was most marked for E. velutina. Regarding the partition of biomass, there were few changes throughout the experiment. Morphological changes in the leaves as a function of stress were not significant, however, there was a trend, in both species, to produce narrower leaves, that facilitate heat loss to the environment. It has not been possible to establish a positive relationship between inhibition of growth and distribution of species, whereas E. velutina is a species of most common occurrence in Seridó oriental potiguar. In this way, other aspects should be taken into account when studying the adaptation of species the dry environments, such as salinity, presence of heavy metals, wind speed, etc

Influencia de las malezas sobre el cultivo de frijol en función de espaciamiento y de la densidad de plantas

La hipótesis de investigación es que con la reducción de la densidad de siembra y del espaciamiento entre líneas, el período anterior a la interferencia de las malezas será reducido en el cultivo de frijol. El objetivo de este trabajo fue determinar el período anterior a la interferencia de las malezas (PAI) en función del espaciamiento entre líneas y de su densidad poblacional. Los tratamientos fueron constituidos de ocho períodos de convivencia del cultivo con las malezas: 0-10, 0-20, 0-30, 0-40, 0-50, 0-60, 0-70 y 0-80 días después de la emergencia y un control libre de interferencia. Los períodos de convivencia fueron aplicados en dos experimentos, utilizando dos distancias entre líneas, de 0,45 y 0,60 m y en dos densidades de plantas por línea de siembra, de 10 y 15 plantas por metro. El delineamiento experimental utilizado fue en bloques completos al azar, con cuatro repeticiones. Hubo reducción de 16, 40, 36 y 58% en la productividad de granos del cultivo de frijol cuando convivió durante todo el ciclo del cultivo con las malezas, para el espaciamiento de 0,45 m en las densidades de 10 y 15 plantas m-1; y espaciamiento de 0,60 m y densidades de 10 y 15 plantas m-1, respectivamente. La productividad de granos pasó a ser afectada negativamente a partir de 28, 26, 22 y 14 días después de la emergencia, constituyéndose en los períodos anteriores a la interferencia del cultivo, respectivamente.

EMPRESAS DA CONSTRUÇÃO CIVIL DO MUNICÍPIO DE ARACAJU-SE: Percepções sobre Responsabilidade Social Empresarial

The companies are part of an important segment of the society, besides, it exercises a significant contribution, being also responsible for helping in the improvement of the quality of life of the population. Like this being, to present research looked for to investigate the perception that the entrepreneurs of the building site of Aracaju/SE have concerning the theme Business Social Responsibility (RSE). besides the perceptions, it was part also of the research, to know the entrepreneur's of the building site social construction and the possible practices of Social Responsibility. The research grew in two different moments. The first looked for the theoretical embasamento, trying to study the economical sociology, understanding the effects provoked by the economy, understanding to you reason them that you/they took to the appearance of the perceptions that you/they permeate the historicity among the market, the nascedouro of the associations as company and his/her dynamics in the society. It was also researched, the concept of social responsibility in national and local extent, as well as, the contextualização of the state of Sergipe, detaching the municipal district of Aracaju, and describing how it happened his/her development starting from what is considered urbanization. In the second moment, the accomplishment of interviews in five companies, allowed to notice the entrepreneurs' perception concerning business social responsibility, as well as, actions of different characteristics in four of the samples. In these actions, they are patronage in cultural events, donations of projects for charity institutions, the concern with the preservation of the environment in the use of work materials ecologically correct, preventive health and employees' training. Concluding the research, I introduce the conclusions which it allowed to arrive me, and I point some suggestions for future researches that enlarge the reflection on this theme

Interferencia de malezas en el cultivo de frijol en dos sistemas de labranzas

Con este trabajo, se busco determinar el período anterior a la interferencia de las malezas que conviven con el cultivo de frijol, en ausencia o presencia de residuos vegetales de Crotalaria juncea. Los tratamientos estaban constituidos de siete períodos de convivencia del cultivo con las malezas: 0-10, 0-20, 0-30, 0-40, 0-50, 0-60 y 0-70 días después de la emergencia y también de un testigo sin presencia de las malezas en ausencia o presencia de crotalaria. El diseño experimental utilizado fue de bloques completos seleccionados al azar, con cuatro repeticiones por tratamiento. Hubo reducciones de 40,6% y 55,1% en la productividad de granos de frijol en convivencia con malezas durante todo el ciclo del cultivo, en ausencia y presencia de los residuos vegetales, respectivamente. Se concluyó que la productividad de granos fue afectada negativamente a partir de 29 y 38 días después de la emergencia, sin y con residuos, respectivamente, y eso constituyó los períodos anteriores a la interferencia.

O choque das culturas da ordem

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Gênero ou sexualidade?: (re) produção das identidades homoeróticas masculinas no cinema de massa

Homosexuality has been gaining strength in Cinema from the late twentieth century, when there is a dissemination of freedoms around the peripheral or marginal sexualities. Based on this assumption, it was formulated in the dissertation work, an analysis of the relationship between Cinema and Sexuality in order to understand, describe, reflect and analyze possible changes around the performative behaviors of male homosexual from the introduction of them in film production, arising from the mass culture industry. These productions are located in three different decades. In this case, the Cinema has not only the reproductive character of realities, but also a producing agent and consolidating them. The methodology applied was discourse analysis of three film works, namely La Cage aux Folles (1978), In & Out (1997) and Boat Trip (2002). The image, research object of this work, is developed by a mass culture that will produce mass identities which is characterized by crystallization of clichés around the gay world

A imagem da pessoa comum: sobre os filmes dos pontos de cultura de natal/rn

The following research aims to address the image of the ordinary person in the films of the Pontos de Cultura (Culture Points) in Natal-RN. About ten years the Federal Government of Brazil created the Cultura Viva (Living Culture) program. It enabled the State to support financially civil society organizations that had developed cultural works in communities across the country. Along with the resources the program developed, in parallel, another action, Cultura Digital (Digital culture), intended to bring the tools of digital technology for people who have never had access to them. As a result of these initiatives were produced short films. These films were characterized by the presence of the image of the ordinary person. The creation of this type of cultural product was benefited by state initiative, however, it was inserted within a historical, political and cultural construction whose research was necessary for this image understood to be understood by its importance: it is the expression of emancipation the ordinary person and not just as a consumer of culture, it identifies them as the protagonists of the society and recognizes their vital role in its organization

Missa de Alcaçus: aproximações melódicas com os romances medievais ibéricos

Este trabalho tem como objetivo investigar a obra Missa de Alcaçus a partir dos romances medievais ibéricos recolhidos do livro Romanceiro de Alcaçus de Deífilo Gurgel (1992). Parte-se do interesse de buscar afinidades melódicas entre os romances com as partes da Missa e de compreender como se deu o processo de inserção dos romances ibéricos, como elementos da cultura popular na obra erudita. Para a análise musical da obra Missa de Alcaçus, o trabalho tem como referência o conceito de afinidade eletiva por Max Weber (1995) atribuído as possibilidades de inserção de elementos da música tradicional do Nordeste à obra erudita. Quanto os romances ibéricos recolhidos da tradição oral, tomamos o conceito de memória coletiva de Maurice Halbwachs (2006), a fim de esclarecer o processo de construção da memória coletiva contida nesses romances. A pergunta central deste trabalho consiste em saber se há afinidade melódica entre os romances e as partes da Missa de Alcaçus. Para a metodologia desta pesquisa, são expostos os romances ibéricos e as partes da Missa num quadro de cartografia simbólica, segundo Boaventura Santos (2000), a fim de identificar onde, como e quais os desdobramentos musicais da obra

A guerra midiática contra a Venezuela de Hugo Chavez: a cobertura da revista veja (1998-2002)

A pretensão deste trabalho foi o de analisar o discurso da revista semanal Veja sobre o governo de Hugo Chávez Frías, atual presidente da República Bolivariana da Venezuela. Através da leitura das reportagens, procuramos apresentar o comportamento da revista em relação ao se governo e a forma que sua política é classificada, representada. Reunimos edições da revista, entre 1998 a 2002, início do seu governo - eleito em dezembro de 1998, toma posse no início de 1999, período da tentativa de golpe (frustrada) em abril de 2002. O trabalho procura mostrar como as matérias não são isentas e que há um claro posicionamento ideológico da revista, que se insere no conjunto mais geral da mídia conservadora e anti-Chávez. O presidente, eleito e reeleito democraticamente, aparece sempre nas diversas reportagens da revista caracterizado como golpista, ditador, populista, fanfarrão. O nosso objetivo é o de revelar como Veja criou uma imagem negativa do presidente da Venezuela, coerente com os princípios neoliberais defendidos pela revista. A Venezuela com Hugo Chávez, com a chamada Revolução Bolivariana , realiza uma experiência singular de governo num país de larga tradição antidemocrática e afirma caminhar na contracorrente do pensamento hegemônico neoliberal. Em contrapartida, a revista Veja se apresenta com um representante da burguesia financeira e importante sujeito na construção e continuidade do neoliberalismo

Distribuição espacial de Phytophthora nicotianae e reação de cultivares de cebola ao fungo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Instâncias da representação imagética hiper-real

The approach that undertakes this work revolves around the emergence of iconic structures on reflecting about the meaning of different methods of image representation through which the contemporaneity reveals itself. At baseline, three aspects are considered looking for an analytical ontology of the act of representation and imagery: the transition of representation in the oral culture of societies for writing, from these to typography, and finally the creation of a representation device. Resorted to, therefore, the argument by some genealogy reference points that technological instances such as writing, printing and photography, the evolution of this process, correspond, in itself, a consequent shift technique, for each representation precedent. In the area of the image, the most salient aspect of this change in foward process is the emergence of hyper-reality: the instances of hyper-realistic representation. In the Western context, the 'simulation of the world' - essential idea of mimesis is the work of an autonomous an conventional system. It should be noted, then the fact that under unreflective of the post-industrial societies, the mass-media image is coating with natural or fake code including - according to Baudrillard - tends to replace the real world in the "perpetuation of a large chain of simulacra." Hence in modern times, in the postindustrial society, during the crisis of the representation regimen and perception, centered in the referent. In this limit, new settings are established by aesthetic representations of imagery in contemporary culture: establishing spaces of simulation [Jean Baudrillard] the spectacle [Guy Debord] and hypermodernity [Gilles Lipovetsky] in which they operate. In these assemblages, saps the emergence of Hyper-reality Representation Instances - as seen in this study aesthetic events to configure itineraries of a new sensibility. It is the nature of this practice sign-iconic, ingrained in the creation of current artistic expression, which this research engaged in peering: the hyper-realistic setting, taking empirical support central to contemporary imagery production, diverse formats of analog representation.