293 research outputs found
Effectiveness of assistance and health social net of elders persons in the users and administrators expressions in Boa Vista/RR
Este artigo trata do paradigma e da efetivação da rede de proteção à pessoa idosa nas áreas de
Assistência Social e Saúde, numa perspectiva crítica, tendo como referência a cidade de Boa Vista, capital do Estado de Roraima. A rede de proteção é definida como uma mediação de forças e de poder que se pactua, atuando formal ou informalmente. Salienta-se que os direitos sociais previstos na legislação devem ser
efetivados numa rede de proteção. A metodologia da pesquisa consistiu de entrevistas semiestruturadas com duas gestoras da área da Saúde e uma da área de Assistência Social e de quatro grupos focais (dois de cada área) com pessoas idosas, além de um mapa de serviços e de seus vínculos no território. Os resultados
mostram que a mediação da proteção em redes se faz com pouca interatividade institucional pactuada e apenas informalmente, por meio de contatos, embora se reconheça um paradigma de ação integrada. __________________________________________________________________________________________________ ABSTRACTThis article deals with the paradigm and the effectiveness of social net protection in the fields of health and social assistance, in a critical perspective, in the Roraima capital, Boa Vista, Brazil. The social net protection is defined as a mediation of power forces agreeded in formal or informal practice. This work deals with the elderly rights to social protection net in the Brazilian Constitution and laws, questioning the effectuation of these rights and protagonism. This research collected the evaluation of the the managers and users by means of four focal groups with the elders and three semi-structured interviews with the managers. The results had shown that it has only informal connection between the services, established in a personal relations, and not in a institutional and political agreement
Microstructures, geochemistry, and geochronology of mica fish: Review and advances
Shear zones are one of the most conspicuous structures in orogenic and rifting settings, accommodating high strain, rock displacement and influencing magma emplacement and fluid flow. Since shear zones may be simultaneously or sequentially affected by multiple processes involving mineral reactions, variations in pressure-temperature conditions, fluid-rock interaction, and diffusion, determining the timing of such structures has been one of the major challenges for modern geochronology. Although low- (up to lower greenschist facies) and high-temperature shear zones (above amphibolite facies) are well-dated through low- and high-closure temperature minerals, medium-temperature shear zones developed within the critical temperature window of ∼450–550 °C, in which conventional chronometers such as 40Ar/39Ar and Rb–Sr applied to mica fish may or may not record the timing of deformation for multiple reasons (e.g., grain size, cooling rate, mineral composition, fluid activity, deformation, neo- and recrystallization). Here, we review the current knowledge on the evolution of mica fish and the effect of deformation on its chemical and isotopic systems. We evaluate the effect on the widely deployed in situ 40Ar/39Ar technique. Furthermore, we demonstrate the potential to assess mica fish evolution applying high-spatial resolution microstructural and chemical mapping techniques such as electron backscatter diffraction (EBSD), time-of-flight secondary ion mass spectrometry (ToF–SIMS) and in situ Rb–Sr via triple quadrupole inductively coupled plasma mass spectrometry (TQ-ICP-MS) to a case study of medium-temperature mylonites from the well-characterized Taxaquara shear zone, SE Brazil. We show that mica fish display complex microstructures with variable strain intensity, commonly with low strain inner cores and high strain edges and along kink planes. Strain shadows in mica fish are commonly characterized by low-strain fine-grained muscovite, suggesting recrystallization coeval with ductile deformation. Despite being intensely deformed, muscovite fish Rb–Sr retain the protolith age (c. 600 Ma), whereas recrystallized fine-grained muscovite yields the timing of deformation (c. 550–540 Ma). Synthetic shear bands cross-cutting coarse-grained muscovite fish induce muscovite recrystallization consistent with their distinct chemistry, with recrystallized muscovite characterized by higher Fe–Mg and lower Na suggesting fluid-assisted recrystallization under lower temperature compared to the muscovite fish host. We propose that these shear bands across mica fish play an important role by accommodating grain size reduction and subsequent deformation, leading to the formation of smaller individual mica fish. Grain size reduction, likely enhanced by dynamic precipitation (i.e., coeval crystal-plastic deformation and dissolution-precipitation creep), appears as the key recrystallization mechanism that allows low strain muscovite in strain shadows and shear bands to record the timing of deformation in medium-temperature shear zones, consistent with qualitative Sr diffusion modelling
Biodiesel Processing Using Sodium and Potassium Geopolymer Powders as Heterogeneous Catalysts
This work investigates the catalytic activity of geopolymers produced using two different alkali components (sodium or potassium) and four treatment temperatures (110 to 700 \ub0C) for the methyl transesterification of soybean oil. The geopolymers were prepared with metakaolin as an aluminosilicate source and alkaline activating solutions containing either sodium or potassium in the same molar oxide proportions. The potassium-based formulation displayed a higher specific surface area and lower average pore size (28.64-62.54 m\ub2/g; 9 nm) than the sodium formulation (6.34-32.62 m\ub2/g; 17 nm). The reduction in specific surface area (SSA) after the heat treatment was more severe for the sodium formulation due to the higher thermal shrinkage. The catalytic activity of the geopolymer powders was compared under the same reactional conditions (70-75 \ub0C, 150% methanol excess, 4 h reaction) and same weight amounts (3% to oil). The differences in performance were attributed to the influences of sodium and potassium on the geopolymerization process and to the accessibility of the reactants to the catalytic sites. The Na-based geopolymers performed better, with FAME contents in the biodiesel phase of 85.1% and 89.9% for samples treated at 500 and 300 \ub0C, respectively. These results are competitive in comparison with most heterogeneous base catalysts reported in the literature, considering the very mild conditions of temperature, excess methanol and catalyst amount and the short time spent in reactions
Epydemiologic study of estereotypies in military horses
Seventy two horses, forty three geldings and twenty nine no pregnant females, from five to seventeen years old were inspectioned. It has been observed the type and regularity of stereotypies, diet and stalls where the equines were stayed. The stereotypies more observed were coprophagy (80%) followed by trough, walls and chains licking (23,6%). Six equines did repetitive vertical head movement (8,3%), three had wood and chain cribbing (4,2%) and two did aerophagy (2,8%). The coprophagy was observed more frequently during the night, at time that the horses didn’t eat forrage (during forteen to sixteen hours) and the stalls weren’t clean. The trough and chains licking ocurred during the day, between meals. According to the findings, the equine stereotypies are variable and were founded many importants predisposed factors.Para estudar a prevalência de estereotipias em eqüinos de cavalaria, foram inspecionados 72 animais, sendo 43 machos castrados e 29 fêmeas não gestantes, com idade entre 5,5 e 17 anos. Foram observados o tipo e a repetibilidade das estereotipias, a dieta e as instalações. As estereotipias mais observadas foram a coprofagia (80%) e a lambedura de cochos, paredes e correntes (23,6%). Seis eqüinos (8,3%) manifestavam movimentos verticais repetitivos de cabeça, três mordiam corrente ou madeira (4,2%) e dois eqüinos realizavam aerofagia (2,8%). A coprofagia foi observada com freqüência maior durante a noite, correspondendo ao intervalo de tempo maior entre as ofertas de volumoso, ou seja, de 14 a 16 horas, e também com os horários em que as fezes não eram recolhidas das baias. A lambedura de cochos e correntes ocorria prevalentemente durante o dia, entre os intervalos das refeições. Entre as condições de manejo e regime alimentar, foram identificados fatores de risco importantes. Concluiu-se que as estereotipias em eqüinos de cavalaria são diversas e freqüentes
Lesões intestinais provocadas pela obstrução experimental do cólon menor equino com isquemia mural
O artigo não apresenta resumo
Measuring the seriousness of surgical illness
O objetivo deste estudo foi escalonar, por médicos e enfermeiros, a gravidade de sessenta e oito (68) quadros clínicos cirúrgicos, através do método de estimação de magnitudes. Os dados permitem concluir que: 1) os quadros clínicocirúrgicos,
aneurismectomia de aorta, aneurismectomia cerebral e revascularização do miocárdio, foram considerados os de maior gravidade, enquanto que os quadros clinicocirúrgicos, adenoidectomia, amigdalectomia e curetagem uterina, os de menor gravidade em todas as escalas obtidas pelos diferentes métodos psicofísicos diretos e 2) a escala de razão de gravidade de quadros clinicocirúrgicos é válida, estável e consistente, pois o expoente obtido (0,74) através dos emparelhamentos de comprimentos de linhas e de forças dinamométricas não foi significativamente diferente do expoente predito (0,77) pela propriedade de transitividade das escalas, ou seja, daquele obtido nas tarefas de calibração por Faleiros Sousa (1)The purpose of this study was to scale the seriousness of 68 clinical surgical illnessess by physicians and nurses through the magnitude estimation method. Data allow some conclusions: 1) the clinical surgical illnesses
aorta aneurysmectomy, cerebrum aneurysmectomy and myocardium revascularization were considered of higher gravity, while the clinical surgical illnesses adenoidectomy, amygdalectomy and uterus curettage of less gravity in all the scales obtained through different psychophysical direct methods and 2) the scale of ratio of gravity of clinical surgical illnesses is valid, stable and consistent as the exponent obtained (0.74) through the matching of lines lengths and dynamometric forces was not significantly different than the exponent established (0.77) by the transitoriness of the scales, or better, the one obtained in the calibration tasks by Faleiros Sousa (1
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