Complications of percutaneous endoscopic gastrostomy in dogs and cats receiving corticosteroid treatment

BACKGROUND: Corticosteroid treatment is commonly required in veterinary patients for treatment of inflammatory, immune‐mediated, neurologic, and neoplastic diseases, which also may require assisted enteral nutrition via percutaneous endoscopic gastrostomy (PEG). OBJECTIVE: To evaluate complications associated with PEG use in dogs and cats receiving corticosteroid treatment. ANIMALS: Forty‐two animals were included in the study: 12 dogs and 2 cats in the steroid group and 26 dogs and 2 cats in the control group. METHODS: Medical records, between January 2006 and March 2015, were reviewed. Patients were included if the PEG tube was in use for at least 24 hours and if complete medical records were available. Patients were assigned to the control group if they were not treated with corticosteroids during PEG use or to the steroid group if they had received corticosteroids during PEG tube use. Complications were classified as minor, moderate, and major in severity. Maximum severity complication rate was compared between groups. RESULTS: The general prevalence of complications was found to be similar between groups (P = .306), but in the steroid group, 43% of the cases developed a major severity complication compared with 18% of the control group (P = .054). CONCLUSION AND CLINICAL IMPORTANCE: Owners of dogs and cats receiving corticosteroids, in which PEG is planned, should be counseled about possible complications beyond those associated with PEG tube usage alone

Monitoramento Agrícola a Partir de Imagens Aéreas e WebMapping .

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Flexural tensile behaviour of enhanced performance concrete

High-performance concrete is generally produced using carefully selected high quality materials. These materials increase significantly the initial costs, hence, limiting its use. In this research work the performance of concrete was enhanced through incorporating low cost untreated materials like fly ash and crushed aggregates. Thus, it can be produced enhanced or even high performance low cost concrete and, also, decrease significantly the use of cement and non-renewable natural resources (river/sea sand), contributing to the necessary sustainability of construction. From experimental program, the effect of replacing cement by fly ash (up to 60%) in the flexural tensile behaviour was evaluated, using control compositions without the addition of fly ash as a base of comparison. The results obtained demonstrate that it is possible to produce enhanced performance concrete with the selected materials replacing up to 40% of the cement by fly ash. In specimens of such mixtures, cured at least 56 days, the values of the compressive strength and the flexural tensile parameters were similar to the ones of the control mixtures

Comportamento à tracção em flexão de betões de desempenho melhorado

A substituição parcial de cimento por cinzas volantes tem sido utilizada por razões económicas e de trabalhabilidade da mistura. O conhecimento acerca da influência da idade e da percentagem de cinzas no comportamento em flexão do betão, principalmente na sua capacidade de absorção de energia, é reduzido. O presente trabalho pretende dar um contributo nesta área

Semiclassical coherent state propagator for systems with spin

We derive the semiclassical limit of the coherent state propagator for systems with two degrees of freedom of which one degree of freedom is canonical and the other a spin. Systems in this category include those involving spin-orbit interactions and the Jaynes-Cummings model in which a single electromagnetic mode interacts with many independent two-level atoms. We construct a path integral representation for the propagator of such systems and derive its semiclassical limit. As special cases we consider separable systems, the limit of very large spins and the case of spin 1/2.Comment: 19 pages, no figure

Variação da contração volumétrica da madeira de Hymenaea sp em função da temperatura de secagem.

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Exchange narrowing of NMR line shapes in randomly diluted magnetic systems

An analysis of 19F NMR linewidths in the randomly diluted magnetic system KMnxMg1-xF3 is presented. It is shown that good agreement with measured linewidths can be obtained if in the usual asymptotic spin-diffusion assumption for the spin autocorrelation function 〈Siα(τ)Siα(0)〉avατ-d(x)/2, d(x) is taken to be independent of x above the percolation concentration. Experimental results in the system KNixMg1-xF3 are also presented. These data exhibit striking differences with the behavior of isostructural KMnxMg1-xF3 whose origin is discussed