Contribuição para o estudo do hemograma do cavalo puro sangue lusitano

Este trabalho centrou-se na caracterização do hemograma de Puro-Sangue Lusitanos, PSL e respectiva comparação com outras raças. A população estudada incluiu 61 cavalos PSL. Foram analisados: eritrócitos totais, hematócrito, hemoglobina, volume corpuscular médio, VCM, hemoglobina corpuscular média, HCM, concentração de hemoglobina corpuscular média, CHCM, leucócitos totais e respectiva contagem diferencial e plaquetas totais. Os resultados obtidos foram comparados com dados previamente publicados, relativos ao Puro-Sangue Inglês, PSI, e aos ‘Warmblood’, WB. O valor médio de eritrócitos e concentração de hemoglobina dos PSL foi inferior à dos PSI, enquanto o valor médio do hematócrito e VCM dos PSL foi superior ao dos PSI e WB.O valor médio da HCM dos PSL foi superior ao dos PSI, no entanto o valor médio da CHCM dos PSL foi inferior ao dos PSI e WB. O valor médio de leucócitos totais, linfócitos e eosinófilos dos PSL foi superior ao dos PSI e WB. A média dos neutrófilos foi superior nos PSL, relativamente aos dos WB, e dos monócitos inferior aos PSI. O valor médio de plaquetas dos PSL foi inferior ao dos PSI e WB. Os parâmetros do hemograma no PSL apresentam diferenças significativas relativamente às populações utilizadas para comparação, interessantes a ter em conta na interpretação do hemograma de PSL.

Il silenzio e l’umanità autentica : antropologia ed etica fra Montaigne e Heidegger

During the long history of Western thought, silence has always represented the main condition for the development of a deep meditation about the Self. Through this activity, which could seem to be in contrast with social life and philosophical praxis, several thinkers have tried to reach the spiritual nature of human beings. However, when they had to assign a foundation to it, the same meditation, which had started from the same bases, brought them to opposite conclusions. The motive for this divergence is grounded on the fact that materiality is not the only component that constitutes silence, since it has indeed a complex nature and so it consists also of an immaterial part. In addition, this inner and more hidden aspect could only be perceived through a direct contact that is rarely and personally achieved. As a consequence of this complexity, beside an interpretation of silence as a manifestation of God’s voice and a proof of the transcendent peculiarity of human beings, another reading has developed along a parallel path. This interpretation has represented silence as an expression of an utterly immanent spirituality that characterizes humanity. Two authors, in particular, can exhibit this frequently forgotten second stream of Western thought that has unceasingly run from Hellenistic age to contemporary culture: they are Michel de Montaigne and Martin Heidegger. This essay seeks to rebuild this long and complex plot of the history of Western thought through the texts’ recourse. At the same time, it seeks to grasp, in the relationship between men and silence, some fundamental prerequisites that could be considered absolutely necessary in order to design an anthropology and, consequently, an ethics with the characteristics of a recovered authenticity. These two renovated categories, according to the immanent feature of silence, have their own justification exclusively in the voice of human conscience and their purpose lies precisely in the relationship with others.

SN10: reliability and validity

This study discusses a study to assess reliability and validity of the 500 Hz SN10 for adult, non-sedated patients.

The phase relations of normal ears compared with the phase relations of otosclerotic ears before and after the fenestration operation

This paper discusses the fenestration operation and its effect on hearing.

El viaje a Camelot de Bartolomé de las Casas (Estudios)

La autora lee la Brevísima, de Bartolomé de las Casas, en el contexto del auge del imaginario caballeresco en el siglo XVI español, propiciado por las empresas de la Conquista y la Colonia, y que alcanzó igualmente a las gestas religiosas. Estudia este reflejo caballeresco –ensombrecido tal vez por el dramatismo y la violencia de lo narrado, entre otras razones–, empezando por la promesa lascasiana de ennoblecer a campesinos pacíficos a cambio de que colonizaran con justicia, resalta el carácter cortés y pacífico de los indios, así como de sus valores de tinte caballeresco («lo mismo los varones que las mujeres, muertas antes que entregar su honra o faltar a sus esposos», destaca su respeto a la jerarquía, natural o adquirida, y a las responsabilidades de cada cual, incluidas las del buen rey, que protege a sus vasallos y defiende los límites de su territorio), incluso distingue su delicadeza corporal como signo de nobleza. El patrón narrativo de la Brevísima es similar al de muchas obras de la tradición caballeresca. Utiliza todos estos elementos en un retrato civilizado de los indios, presentados viviendo en sociedad y según las virtudes cristianas antes de la llegada de los españoles, en un equilibrio que sería amenazado por los afanes desmedidos de los conquistadores.

Por media vida deslumbrados (Dossier: Narradores ecuatorianos de la década de 1950)

En este trabajo se plantea que acaso con mayor intensidad que en Huasipungo (1934) y El Chulla Romero y Flores (1958), es en tres obras poco estudiadas de Jorge Icaza donde puede apreciarse con claridad –tal que deslumbra– su propuesta estética: en la pieza de teatro Flagelo (1936), la novela Media vida deslumbrados (1942) y el cuento «El nuevo San Jorge» (1952). Sin apartarse de la denuncia social, Icaza cierra con Flagelo su propuesta dramática, constituyen una suerte de manifiesto literario, por las repercusiones estéticas que alcanzan a la narrativa del autor. En Media vida deslumbrados se puede apreciar un equilibrio efectivo entre las propuestas del autor y su afán de denuncia social. «El nuevo San Jorge», según el autor de este ensayo, sería la obra que alberga lo más radical, en cuanto propuesta estética, de toda la obra icaciana, destaca los elementos neo-barrocos de la misma, con insistencia en los juegos de máscaras, las intermitencias entre las luces y las sombras, y en el múltiple y a la vez unívoco rostro de quien detenta el poder –algunos de estos elementos comunes a las dos obras comentadas, y a El Chulla Romero y Flores.

The counter-propagating Rossby-wave perspective on baroclinic instability. Part IV: Nonlinear life cycles

Pairs of counter-propagating Rossby waves (CRWs) can be used to describe baroclinic instability in linearized primitive-equation dynamics, employing simple propagation and interaction mechanisms at only two locations in the meridional plane—the CRW ‘home-bases’. Here, it is shown how some CRW properties are remarkably robust as a growing baroclinic wave develops nonlinearly. For example, the phase difference between upper-level and lower-level waves in potential-vorticity contours, defined initially at the home-bases of the CRWs, remains almost constant throughout baroclinic wave life cycles, despite the occurrence of frontogenesis and Rossby-wave breaking. As the lower wave saturates nonlinearly the whole baroclinic wave changes phase speed from that of the normal mode to that of the self-induced phase speed of the upper CRW. On zonal jets without surface meridional shear, this must always act to slow the baroclinic wave. The direction of wave breaking when a basic state has surface meridional shear can be anticipated because the displacement structures of CRWs tend to be coherent along surfaces of constant basic-state angular velocity, U. This results in up-gradient horizontal momentum fluxes for baroclinically growing disturbances. The momentum flux acts to shift the jet meridionally in the direction of the increasing surface U, so that the upper CRW breaks in the same direction as occurred at low levels

Composition and cure temperature: The influence on properties of final flexible PU cold cure foam parts

Foams are cellular structures, produced by gas bubbles formed during the polyurethane polymerization mixture. Flexible PU foams meet the following two criteria: have a limited resistance to an applied load, being both permeable to air and reversibly deformable. There are two main types of flexible foams, hot and cold cure foams differing in composition and processing temperatures. The hot cure foams are widely applied and represent the main composition of actual foams, while cold cure foams present several processing and property advantages, e.g, faster demoulding time, better humid aging properties and more versatility, as hardness variation with index changes are greater than with hot cure foams. The processing of cold cure foams also is attractive due to the low energy consumption (mould temperature from 30 degrees to 65 degrees C) comparatively to hot cure foams (mould temperature from 30 degrees to 250 degrees C). Another advantage is the high variety of soft materials for low temperature processing moulds. Cold cure foams are diphenylmethane diisocyanate (MDI) based while hot cure foams are toluene diisocyanate (TDI) based. This study is concerned with Viscoelastic flexible foams MDI based for medical applications. Differential Scanning Calorimetry (DSC) was used to characterize the cure kinetics and Dynamical Mechanical Analisys to collect mechanical data. The data obtained from these two experimental procedures were analyzed and associated to establish processing/properties/operation conditions relationships. These maps for the selection of optimized processing/properties/operation conditions are important to achieve better final part properties at lower costs and lead times.

Atmospheric warming and the amplification of precipitation extremes

Climate models suggest that extreme precipitation events will become more common in an anthropogenically warmed climate. However, observational limitations have hindered a direct evaluation of model-projected changes in extreme precipitation. We used satellite observations and model simulations to examine the response of tropical precipitation events to naturally driven changes in surface temperature and atmospheric moisture content. These observations reveal a distinct link between rainfall extremes and temperature, with heavy rain events increasing during warm periods and decreasing during cold periods. Furthermore, the observed amplification of rainfall extremes is found to be larger than that predicted by models, implying that projections of future changes in rainfall extremes in response to anthropogenic global warming may be underestimated.

A Conceptual Model for Group Support Systems in Local Councils

This paper proposes a conceptual model of a context-aware group support system (GSS) to assist local council employees to perform collaborative tasks in conjunction with inter- and intra-organisational stakeholders. Most discussions about e-government focus on the use of ICT to improve the relationship between government and citizen, not on the relationship between government and employees. This paper seeks to expose the unique culture of UK local councils and to show how a GSS could support local government employer and employee needs.

Quantifying the effects of perturbing the physics of an interactive sulfur scheme using an ensemble of GCMs on the climateprediction.net platform

Aerosols from anthropogenic and natural sources have been recognized as having an important impact on the climate system. However, the small size of aerosol particles (ranging from 0.01 to more than 10 μm in diameter) and their influence on solar and terrestrial radiation makes them difficult to represent within the coarse resolution of general circulation models (GCMs) such that small-scale processes, for example, sulfate formation and conversion, need parameterizing. It is the parameterization of emissions, conversion, and deposition and the radiative effects of aerosol particles that causes uncertainty in their representation within GCMs. The aim of this study was to perturb aspects of a sulfur cycle scheme used within a GCM to represent the climatological impacts of sulfate aerosol derived from natural and anthropogenic sulfur sources. It was found that perturbing volcanic SO2 emissions and the scavenging rate of SO2 by precipitation had the largest influence on the sulfate burden. When these parameters were perturbed the sulfate burden ranged from 0.73 to 1.17 TgS for 2050 sulfur emissions (A2 Special Report on Emissions Scenarios (SRES)), comparable with the range in sulfate burden across all the Intergovernmental Panel on Climate Change SRESs. Thus, the results here suggest that the range in sulfate burden due to model uncertainty is comparable with scenario uncertainty. Despite the large range in sulfate burden there was little influence on the climate sensitivity, which had a range of less than 0.5 K across the ensemble. We hypothesize that this small effect was partly associated with high sulfate loadings in the control phase of the experiment.

Physico-chemical controls on phosphorus cycling in two lowland streams. Part 2 - The sediment phase

This article investigates the temporal and spatial controls on sediment-phosphorus (P) dynamics in two contrasting sub-catchments of the River Kennet, England. Suspended sediment (collected under representative flow conditions) and size-fractionated bedload (collected weekly for one year) from the Rivers Lambourn and Enborne was analysed for a range of physico-chemical determinands. Total P concentrations were highest in the most mobile fractions of sediment: suspended sediment, fine silt and clay and organic matter (mean concentrations of 1758, 1548 and 1440 mug P g(-1) dry sediment, respectively). Correlation analysis showed significant relationships between total P and total iron (n = 110), total manganese (n = 110), organic matter (n = 110) and specific surface area (n = 28) in the Lambourn (r(2) 0.71, 0.68, 0.62 and 0.52, respectively) and between total P and total iron (n = 110), total manganese (n = 110) and organic matter (n = 110) in the Enborne (r(2) 0.74, 0.85 and 0.68, respectively). These data highlight the importance of metal oxyhydroxide adsorption of P on fine particulates and organic matter. However, high total P concentrations in the granule gravel and coarse sand size fraction during the summer period (mean concentration 228 mug P g(-1) dry sediment) also highlight the role of calcite co-precipitation on P dynamics in the Lambourn. P to cation ratios in Lambourn sediment indicated that fine silt and clay and granule gravel and coarse sand size fractions were potential sources of P release to the water column during specific periods of the summer and autumn. In the Enborne, however, only the granule gravel and coarse sand size fraction had high ratios and a slow, constant release of P was observed. In addition, scanning electron microscopy work confirmed the association of P with calcite in the Lambourn and P with iron on clay particles in the Enborne. The study highlighted the importance of the chemical and physical properties of the sediment in influencing the mechanisms controlling P storage and release within river channels. (C) 2004 Elsevier B.V. All rights reserved.