988 resultados para 618.92238
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Radiolarians are present in samples from six of the seven Deep Sea Drilling Project Leg 96 sites examined. The age of the siliceous fauna in these samples ranges from late Pleistocene through Holocene, with some Cretaceous radiolarians redeposited in Pleistocene sequences. Radiolarian preservation is discontinuous at these sites except for intraslope basin Site 618, where the sediments throughout the first five cores contain radiolarians.
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Mode of access: Internet.
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Mode of access: Internet.
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Includes index.
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En la Antigua Roma las mujeres casadas no gozaban de ningún tipo de libertades y todos los placeres les eran vedados a su clase (Rousselle, 2000). Responsables de la gestación de los futuros ciudadanos, su esfera de acción se limitaba al hogar, donde, además de procurarles especial atención a sus maridos e hijos, estaban encargadas de realizar, entre otras tareas, el control de la servidumbre, la administración de los gastos y el tejido (Knapp, 2011). A diferencia de las mujeres de otras clases, prostitutas y esclavas, la conducta de las matronas debía estar regida por la castidad, la reserva, la modestia y la pietas, principales virtudes celebradas en las fuentes epigráficas (CIL 6.23773, 8.11294). Como consecuencia de la corrupción de las costumbres durante la República, Augusto sancionó una serie de leyes (Lex Iulia de maritandis ordinibus y de adulteriis coercendis en 18 a.C., Lex Papia Poppaea en 9 d.C.) que, basándose en la tradición de los antepasados, estaban destinadas a ejercer un fuerte dominio sobre las políticas familiares. Se obligaba a los estratos superiores de la sociedad a contraer uniones legítimas y a tener descendencia, y se sancionaba con severidad a aquellas mujeres que cometían adulterio y que no se ajustaban al modelo femenino que el Estado buscaba imponer (Pomeroy, 1999). Bajo la luz de estas consideraciones acerca de la matrona, nos proponemos ofrecer una lectura posible de los fragmentos 618-9 y 681 M del poeta satírico Lucilio, conservados únicamente por transmisión indirecta. Así pues, a partir de información recabada del contexto social y político, intentamos demostrar que en el horizonte del pensamiento romano se mantiene constante un único ideal de mujer, al mismo tiempo que, a partir de referencias intertextuales, logramos dar sentido(s) a un texto que sólo a simple vista parece no poder decirnos mucho.
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Preliminary data on dissolved organic carbon (DOC) and dissolved sugars in interstitial water samples collected at Sites 618, 619, and 623 of Deep Sea Drilling Project Leg 96 are presented. At Site 618 in Orca Basin, the DOC content of the interstitial water peaks in the hypersaline sulfate reduction zone. The sugar content reaches a maximum and the DOC content begins to decrease at the depth of methane gas generation. Below that depth, the sugar and DOC contents are about constant. At Site 619 in Pigmy Basin, the DOC content increases slightly with depth in the sulfate reduction and the methane fermentation zones. The sugar content is lower in the sulfate reduction zone than in the methane fermentation zone; sugar concentration increases and fluctuates with methane gas percentages within the methane fermentation zone. At Site 623 in the lower fan region of the Mississippi Fan, there is no sulfate reduction zone. The DOC and sugar contents of the interstitial water are almost constant with depth.
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En la Antigua Roma las mujeres casadas no gozaban de ningún tipo de libertades y todos los placeres les eran vedados a su clase (Rousselle, 2000). Responsables de la gestación de los futuros ciudadanos, su esfera de acción se limitaba al hogar, donde, además de procurarles especial atención a sus maridos e hijos, estaban encargadas de realizar, entre otras tareas, el control de la servidumbre, la administración de los gastos y el tejido (Knapp, 2011). A diferencia de las mujeres de otras clases, prostitutas y esclavas, la conducta de las matronas debía estar regida por la castidad, la reserva, la modestia y la pietas, principales virtudes celebradas en las fuentes epigráficas (CIL 6.23773, 8.11294). Como consecuencia de la corrupción de las costumbres durante la República, Augusto sancionó una serie de leyes (Lex Iulia de maritandis ordinibus y de adulteriis coercendis en 18 a.C., Lex Papia Poppaea en 9 d.C.) que, basándose en la tradición de los antepasados, estaban destinadas a ejercer un fuerte dominio sobre las políticas familiares. Se obligaba a los estratos superiores de la sociedad a contraer uniones legítimas y a tener descendencia, y se sancionaba con severidad a aquellas mujeres que cometían adulterio y que no se ajustaban al modelo femenino que el Estado buscaba imponer (Pomeroy, 1999). Bajo la luz de estas consideraciones acerca de la matrona, nos proponemos ofrecer una lectura posible de los fragmentos 618-9 y 681 M del poeta satírico Lucilio, conservados únicamente por transmisión indirecta. Así pues, a partir de información recabada del contexto social y político, intentamos demostrar que en el horizonte del pensamiento romano se mantiene constante un único ideal de mujer, al mismo tiempo que, a partir de referencias intertextuales, logramos dar sentido(s) a un texto que sólo a simple vista parece no poder decirnos mucho
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En la Antigua Roma las mujeres casadas no gozaban de ningún tipo de libertades y todos los placeres les eran vedados a su clase (Rousselle, 2000). Responsables de la gestación de los futuros ciudadanos, su esfera de acción se limitaba al hogar, donde, además de procurarles especial atención a sus maridos e hijos, estaban encargadas de realizar, entre otras tareas, el control de la servidumbre, la administración de los gastos y el tejido (Knapp, 2011). A diferencia de las mujeres de otras clases, prostitutas y esclavas, la conducta de las matronas debía estar regida por la castidad, la reserva, la modestia y la pietas, principales virtudes celebradas en las fuentes epigráficas (CIL 6.23773, 8.11294). Como consecuencia de la corrupción de las costumbres durante la República, Augusto sancionó una serie de leyes (Lex Iulia de maritandis ordinibus y de adulteriis coercendis en 18 a.C., Lex Papia Poppaea en 9 d.C.) que, basándose en la tradición de los antepasados, estaban destinadas a ejercer un fuerte dominio sobre las políticas familiares. Se obligaba a los estratos superiores de la sociedad a contraer uniones legítimas y a tener descendencia, y se sancionaba con severidad a aquellas mujeres que cometían adulterio y que no se ajustaban al modelo femenino que el Estado buscaba imponer (Pomeroy, 1999). Bajo la luz de estas consideraciones acerca de la matrona, nos proponemos ofrecer una lectura posible de los fragmentos 618-9 y 681 M del poeta satírico Lucilio, conservados únicamente por transmisión indirecta. Así pues, a partir de información recabada del contexto social y político, intentamos demostrar que en el horizonte del pensamiento romano se mantiene constante un único ideal de mujer, al mismo tiempo que, a partir de referencias intertextuales, logramos dar sentido(s) a un texto que sólo a simple vista parece no poder decirnos mucho
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Brazil is an important poultry meat export country, and large parts of its destination are countries with specific rearing restrictions related to broiler s welfare. One of the aerial pollutants mostly found in high concentrations in closed poultry housing environment is ammonia. There are evidences that broilers welfare may be compromised by the continuous exposition to this pollutant in rearing housing. This research aimed to estimate broilers welfare reared under specific thermal environmental attributes and bird s density, as function of the ammonia concentration and light intensity inside the housing environment using the Fuzzy Theory. Results showed that the best welfare value (0.89 in the scale: 0-1) approximately 90% of the ideal was found in the conditions that associated the ideal thermal environment, with bird s density between 13-15 birds m-2, with values of the ammonia concentration in the environment below 5 ppm, and light intensity near 1 lx. Using the predictive method it was possible to estimate broilers welfare with relation to the ammonia concentration and light intensity in the housing.
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A photodynamic effect occurs when photosensitiser molecules absorb light and dissipate the absorbed energy by transferring it to biological acceptors (usually oxygen), generating an excess of reactive species that are able to force cells into death pathways. Several tropical diseases present physiopathological aspects that are accessible to the application of a photosensitiser and local illumination. In addition, disease may be transmitted through infected blood donations, and many of the aetiological agents associated with tropical diseases have been shown to be susceptible to the photodynamic approach. However, there has been no systematic investigation of the application of photoantimicrobial agents in the various presentations, whether to human disease or to the disinfection of blood products or even as photo-insecticides. We aim in this review to report the advances in the photoantimicrobial approach that are beneficial to the field of anti-parasite therapy and also have the potential to facilitate the development of low-cost/high-efficiency protocols for underserved populations.
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OBJETIVO: Avaliar a densidade mineral óssea (DMO) e relacioná-la com a ingestão alimentar e composição corporal de adolescentes modelos de passarela. MÉTODOS: Estudo transversal avaliando 33 modelos e 33 não modelos de 15 a 18 anos pareadas por idade e índice de massa corporal (IMC). A densidade mineral óssea da coluna (L1-L4) foi avaliada por meio da técnica da absorciometria de feixe duplo de energia (Lunar® DPX Alpha), e a composição corporal, pela técnica de pletismografia. A ingestão alimentar foi avaliada por meio do registro alimentar de 3 dias. RESULTADOS: A média de idade das adolescentes foi de 16,75±1,04 anos, sendo que 24 por cento apresentaram IMC abaixo dos valores ideais para a idade. Não houve diferença de DMO entre modelos (1,108±0,080 g/cm2) e não modelos (1,096±0,102 g/cm2) (p > 0,05), sendo identificada uma porcentagem de 6 por cento de baixa DMO para a idade. Observou-se que a média de ingestão de energia foi menor entre as modelos em comparação às adolescentesnão modelos (1.480,93±582,95 versus 1.973,00±557,63 kcal) (p > 0,05) e que a maioria das adolescentes de ambos os grupos apresentou consumo inadequado de micronutrientes, ressaltando-se a baixa ingestão de cálcio. Verificou-se correlação significativa da DMO apenas com a massa magra (kg) (modelos r = 0,362 e não modelos r = 0,618; p < 0,05). CONCLUSÃO: Apesar de não ter sido encontrada associação entre a DMO, o IMC e a ingestão de nutrientes importantes no processo de mineralização óssea, as inadequações na ingestão alimentar podem influenciar negativamente a aquisição de massa óssea, que se encontra potencializada neste estágio de vida
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The present research was conducted to estimate the genetic trends for meat quality traits in a male broiler line. The traits analyzed were initial pH, pH at 6 h after slaughter, final pH, initial range of falling pH, final range of falling pH, lightness, redness, yellowness, weep loss, drip loss, shrink loss, and shear force. The number of observations varied between 618 and 2125 for each trait. Genetic values were obtained by restricted maximum likelihood, and the numerator relationship matrix had 107,154 animals. The genetic trends were estimated by regression of the broiler average genetic values with respect to unit of time (generations), and the average genetic trend was estimated by regression coefficients. Generally, for the traits analyzed, small genetic trends were obtained, except for drip loss and shear force, which were higher. The small magnitude of the trends found could be a consequence of the absence of selection for meat quality traits in the line analyzed. The estimates of genetic trends obtained were an indication of an improvement in the meat quality traits in the line analyzed, except for drip loss.
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Premise of the study: The phloem is a plant tissue with a critical role in plant nutrition and signaling. However, little is still known about the evolution of this tissue. In lianas of the Bignoniaceae, two distinct types of phloem coexist: a regular and a variant phloem. The cells associated with these two phloem types are known to be anatomically different; however, it is still unclear what steps were involved in the evolution of such differences. Methods: Here we studied the anatomical development of the regular and variant phloem in representatives of all 21 genera of Bignonieae and used a phylogenetic framework to investigate the timing of changes associated with the evolution of each phloem type. Key results: We found that the variant phloem always appears in a determinate location, between the leaf orthostichies. Furthermore, the variant phloem was mostly occupied by very wide sieve tubes and generally included a higher concentration of fibers, indicating an increase in conduction and mechanical support. On the other hand, the regular phloem included much more parenchyma, more and wider rays, and tiny sieve tubes that resembled terminal sieve tubes from plants with seasonal formation of vascular tissues; these findings suggest reduced conduction and higher storage capacity in the regular phloem. Conclusions: Overall, differences between the regular and variant phloem increased over time, leading to further specialization in conduction in the variant phloem and an increase in storage specialization in the regular phloem.
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The effect of daily ingestion of collagen hydrolysate (CH) on skin extracellular matrix proteins was investigated. Four-week-old male Wistar rats were fed a modified AIN-93 diet containing 12% casein as the reference group or CH as the treatment group. A control group was established in which animals were fed a non-protein-modified AIN-93 diet. The diets were administered continuously for 4 weeks when six fresh skin samples from each group were assembled and subjected to extraction of protein. Type I and IV collagens were studied by immunoblot, and activities of matrix metalloproteinase (MMP) 2 and 9 were assessed by zymography. The relative amount of type I and IV collagens was significantly (P<.05) increased after CH intake compared with the reference diet group (casein). Moreover, CH uptake significantly decreased both proenzyme and active forms of MMP2 compared with casein and control groups (P<.05). In contrast, CH ingestion did not influence on MMP9 activity. These results suggest that CH may reduce aging-related changes of the extracellular matrix by stimulating anabolic processes in skin tissue.
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It has been suggested that dispersal of seeds of Coussapoa asperifolia magnifolia could have endozoochoric dispersal by frugivorous birds and monkeys because the fruits are red when ripe, or exozoochoric dispersal, because the exocarp is mucilaginous and sticky. However, our field observations showed only stingless bees collecting the exocarp with seeds of C. asperifolia magnifolia, which are used for building and repairing their nests, from which the plants sprout. This paper aimed to determine the fruit chemical composition, since we postulated that C. asperifolia magnifolia is neither consumed by birds nor monkeys due to being very sticky and apparently resinous. Apolar extract analyses revealed the fruits are not resinous but extremely rich in waxes ( mainly esterified triglycerides), and polar extract analyses revealed the sugar content to be close to the sensorial minimum level. This probably accounts for why only stingless bees are seen visiting fruits and dispersing seeds.