981 resultados para ARGOS Location-only transmitter SPOT 2
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Enquadramento: O luto é algo complexo e abarca múltiplas dimensões que podem resultar em luto patológico. Objetivos: Determinar a prevalência de luto complicado em familiares de pessoas em situação paliativa; identificar que variáveis sociodemográficas e de contexto do luto interferem no processo de luto complicado; averiguar se há relação entre a funcionalidade familiar, satisfação quanto aos cuidados prestados ao ente querido, a sobrecarga do cuidador e o luto em familiares de pessoas em situação paliativa. Métodos: Estudo quantitativo, transversal, descritivo e correlacional, realizado numa amostra de 75 familiares de doentes em situação paliativa. Utilizou-se um Questionário Sociodemográfico; Escala de Apgar Familiar (Agostinho & Rebelo, 1988), Escala do Contexto do Luto (Cunha, 2014), Escala de Avaliação da Satisfação dos Familiares dos Doentes em Cuidados Paliativos - Escala FAMCARE (Almeida, 2012), Escala de Sobrecarga do Cuidador (Sequeira, 2010) e o Inventory of Complicated Grief (ICG) (Frade & Rocha, 2008). Resultados: Dos 75 participantes, apenas 24 (35.2%) que se encontravam pelo menos há 6 meses enlutados obtiveram uma pontuação superior a 30 no ICG, tradutora de vivência de luto complicado. Destes, 58.3% eram mulheres e 41.7% homens; na faixa etária =<49 anos (37.5%); com companheiro(a) (54.2%); 70.8% revelam funcionalidade familiar; 62.5% dos participantes perdeu um familiar direto, cujo falecimento ocorreu em 71.4% dos casos no domicílio; 83.3% dos familiares revelam sobrecarga com os cuidados; 29.2% revelam-se insatisfeitos com os cuidados prestados ao seu familiar. Conclusão: Os resultados revelam a necessidade de identificação dos fatores de risco no luto, de modo a mobilizarem-se os recursos para a promoção da vivência saudável do luto. Palavras-Chave: Cuidados Paliativos; Familiares; Luto Complicado.
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Quando falamos de vida selvagem em Portugal, pensamos logo no Lobo Ibérico (Canis lupus signatus), que ao longo das últimas décadas tem vindo a sofrer um notório declínio populacional, apenas contrariado pelas medidas protecionistas entretanto implementadas. A diminuição do número de lobos em Portugal resulta principalmente da perseguição direta a que foram sujeitos e da destruição do seu habitat natural. Outra causa de redução/extinção de pequenas populações locais e fragmentadas de grandes carnívoros em outras partes no mundo tem sido as doenças infeciosas. Sendo monitorização da presença de patologias em animais silvestres fundamental no controle das zoonoses emergentes e na conservação das espécies. Neste contexto pretendeu-se elaborar um estudo de determinação da ocorrência de Leishmaniose, no Lobo Ibérico. Assim, recolheram-se aleatoriamente 42 amostras de sangue a lobos residentes no Parque Nacional Peneda-Gerês que, posteriormente foram testadas recorrendo-se ao método de ELISA. Através desta técnica, detetou-se que das 42 amostras testadas apenas uma amostra (2,4%) possuía anticorpos anti-leishmania. Um dos motivos para a obtenção de resultados pouco significativos poderá dever-se ao reduzido leque amostral. Concluímos, então, que são necessários estudos adicionais para avaliar a importância do Lobo Ibérico na transmissão e propagação da Leishmaniose.
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A wide-angle seismic experiment at the Atlantis II Fracture Zone, Southwest Indian Ridge, together with geochemical analyses of dredged basalt glass samples from a site conjugate to Ocean Drilling Program hole 735B has allowed determination of the thickness and the most likely lithological composition of the crust beneath hole 735B. The measured Na, composition of 3.3 +/- 0.1 corresponds to a melt thickness of 3 +/- 1 km, a result consistent with rare earth element inversions which indicate a melt thickness of between 1.5 and 4.5 km. The seismic crustal thickness to the north and south of the Atlantis Platform (on which hole 735B is located) is 4 +/- 1 km, and probably consists largely of magmatic material since the seismic and inferred melt thicknesses agree within experimental uncertainty. Beneath hole 735B itself. the Moho is at a depth of 5 +/- 1 km beneath the seafloor. The seismic model suggests that, on average. about 1 km of upper crust has been unroofed on the Atlantis Platform. However, allowing for the inferred local unroofing of 2 km of upper crust at 735B, the base of the magmatic crust beneath this location is probably about 2 km beneath the seafloor, and is underlain by a 2-3 km thick layer of serpentinised mantle peridotite. The P-wave velocity of 6.9 km/s for the serpentinised peridotite layer corresponds to a 35 +/- 10 vol% serpentine content. The Moho beneath hole 735B probably represents a serpentinisation front.
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The flux of materials to the deep sea is dominated by larger, organic-rich particles with sinking rates varying between a few meters and several hundred meters per day. Mineral ballast may regulate the transfer of organic matter and other components by determining the sinking rates, e.g. via particle density. We calculated particle sinking rates from mass flux patterns and alkenone measurements applying the results of sediment trap experiments from the Atlantic Ocean. We have indication for higher particle sinking rates in carbonate-dominated production systems when considering both regional and seasonal data. During a summer coccolithophorid bloom in the Cape Blanc coastal upwelling off Mauritania, particle sinking rates reached almost 570 m per day, most probably due the fast sedimentation of densely packed zooplankton fecal pellets, which transport high amounts of organic carbon associated with coccoliths to the deep ocean despite rather low production. During the recurring winter-spring blooms off NW Africa and in opal-rich production systems of the Southern Ocean, sinking rates of larger particles, most probably diatom aggregates, showed a tendency to lower values. However, there is no straightforward relationship between carbonate content and particle sinking rates. This could be due to the unknown composition of carbonate and/or the influence of particle size and shape on sinking rates. It also remains noticeable that the highest sinking rates occurred in dust-rich ocean regions off NW Africa, but this issue deserves further detailed field and laboratory investigations. We obtained increasing sinking rates with depth. By using a seven-compartment biogeochemical model, it was shown that the deep ocean organic carbon flux at a mesotrophic sediment trap site off Cape Blanc can be captured fairly well using seasonal variable particle sinking rates. Our model provides a total organic carbon flux of 0.29 Tg per year down to 3000 m off the NW African upwelling region between 5 and 35° N. Simple parameterisations of remineralisation and sinking rates in such models, however, limit their capability in reproducing the flux variation in the water column.
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We analysed long-chain alkenones in sinking particles and surface sediments from the filamentous upwelling region off Cape Blanc, NW Africa, to evaluate the transfer of surface water signals into the geological record. Our study is based on time-series sediment trap records from 730 m (1990-1991) to 2195-3562 m depth (1988-1991). Alkenone fluxes showed considerable interannual variations and no consistent seasonality. The average flux of C37 and C38 alkenones to the deep traps was 1.9 µg/m**2/d from March 1988 to October 1990 and sevenfold higher in the subsequent year. Alkenone fluxes to the shallower traps were on average twice as high and showed similar temporal variations. The alkenone unsaturation indices UK'37, UK38Me and UK38Et closely mirrored the seasonal variations in sea-surface temperature (weekly Reynolds SST). Time lags of 10-48 days between the SST and unsaturation maxima suggest particle sinking rates of about 80 and 280 m/d for the periods of low and high alkenone fluxes, respectively. The average flux-weighted UK'37 temperature for the 4-year time series of the deeper traps was 22.1°C, in perfect agreement with the mean weekly SST for the same period. This and the comparison with seasonal temperature variations in the upper 100 m of the water column suggests that UK'37 records principally the yearly average of the mixed-layer temperature in this region. A comparison between the average annual alkenone fluxes to the lower traps (2400 µg/m**2/yr) and into the underlying sediments (4 µg/m**2/yr) suggests that only about 0.2% of the alkenones reaching the deep ocean became preserved in the sediments. The flux-weighted alkenone concentrations also decreased considerably, from 2466 µg/gC in the water column to 62 µg/gC in the surface sediments. Such a low degree of alkenone preservation is typical for slowly accumulating oxygenated sediments. Despite these dramatic diagenetic alkenone losses, the UK'37 ratio was not affected. The average UK'37 value of the sediments (0.796±0.010 or 22.3±0.3°C) was identical within error limits to the 4-year average of the lower traps. The unsaturation indices for C38 alkenones and the ratio between C37 and C38 alkenones also revealed a high degree of stability. Our results do not support the hypothesis that UK'37 is biased towards higher values during oxic diagenesis.
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An inflatable drill-string packer was used at Site 839 to measure the bulk in-situ permeability within basalts cored in Hole 839B. The packer was inflated at two depths, 398.2 and 326.9 mbsf; all on-board information indicated that the packer mechanically closed off the borehole, although apparently the packer hydraulically sealed the borehole only at 398.2 mbsf. Two pulse tests were run at each depth, two constant-rate injection tests were run at the first set, and four were run at the second. Of these, only the constant-rate injection tests at the first set yielded a permeability, calculated as ranging from 1 to 5 * 10**-12 m**2. Pulse tests and constant-rate injection tests for the second set did not yield valid data. The measured permeability is an upper limit; if the packer leaked during the experiments, the basalt would be less permeable. In comparison, permeabilities measured at other Deep Sea Drilling Project and Ocean Drilling Program sites in pillow basalts and flows similar to those measured in Hole 839B are mainly about 10**-13 to 10**-14 m**2. Thus, if our results are valid, the basalts at Site 839 are more permeable than ocean-floor basalts investigated elsewhere. Based on other supporting evidence, we consider these results to be a valid measure of the permeability of the basalts. Temperature data and the geochemical and geotechnical properties of the drilled sediments all indicate that the site is strongly affected by fluid flow. The heat flow is very much less than expected in young oceanic basalts, probably a result of rapid fluid circulation through the crust. The geochemistry of pore fluids is similar to that of seawater, indicating seawater flow through the sediments, and sediments are uniformly underconsolidated for their burial depth, again indicating probable fluid flow. The basalts are highly vesicular. However, the vesicularity can only account for part of the average porosity measured on the neutron porosity well log; the remainder of the measured porosity is likely present as voids and fractures within and between thin-bedded basalts. Core samples, together with porosity, density, and resistivity well-log data show locations where the basalt section is thin bedded and probably has from 15% to 35% void and fracture porosity. Thus, the measured permeability seems reasonable with respect to the high measured porosity. Much of the fluid flow at Site 839 could be directed through highly porous and permeable zones within and between the basalt flows and in the sediment layer just above the basalt. Thus, the permeability measurements give an indication of where and how fluid flow may occur within the oceanic crust of the Lau Basin.
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Vol. [3] published by Redfield, 1854.
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Description based only on v. 2.
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Text in Greek only.
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Half title; each vol. has special t.p. only.
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Imprint covered by label of The Crest Trading Company, New York.
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Translation of Treatise on the analytic geometry of three dimensions.
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--v. 24. Bjarnar saga Hitdaelakappa. 1923.--v. 25. Gísla saga Súrssonar. 1922.--v. 26. Fostbraeðra saga. 1925.--v. 27. Heiðarviga saga. 1926.--v. 28. Grettis saga. 1921.--v. 29. Þórðar saga hreðu. 1925.--v. 30. Bandamanna saga. 1926.--v. 31. Hallfreðar saga vandraeðaskalds. 1929.--v. 32. Þorsteins saga hvíta. 1929.--v. 33. Þorsteins saga Siðu-Halssonar. 1931.--v. 34. Graenlendinga þáttr (Flateyjarbók)-1926.--v. 35. Eiríks saga rauða (Hauksbók) 1928.--v. 36. Kjalnesinga saga. 1931.--v. 37. Hárðar saga Snaefellsáss. 1930.--v. 38. Víglundar saga. 1931.
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First published under title: Croniche di Giovanni dopo la confusione della torre di Babello insino all'a 1338, Venice, 1537. This 1st edition contained books 1-10 only, the last 2 books first appearing with the edition published at Florence, 1554.
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Official bulletin of Société médico-psychologique