Encontrados 41 documentos, a visualizar página 1 de 5

Numerical and experimental investigations of three-dimensional container fillin...

This work employs numerical and experimental approaches to investigate three-dimensional container filling with Newtonian viscous fluids. For this purpose, a computer code developed for simulating three-dimensional free surface flows has been used. The CFD Freeflow3D code was specifically designed to deal with unsteady three-dimensional flows possessing multiple moving free surfaces. An experimental apparatus t...

Valorização agrícola de resíduos orgânicos de pecuária: avaliação da fitodispon...

Este trabalho teve como objetivo avaliar a adequação de dois métodos analíticos, o método de Olsen (Olsen-P) e o método de Egnér-Riehm (AL-P), na quantificação do fósforo(P) fitodisponível, após aplicação ao solo, num ensaio de campo, de resíduos orgânicos de pecuária como fertilizantes.

Animal manures applied to soil: phosphorus bioavailability, losses to water and...

Comunicação oral da qual só está disponível o resumo. ; Phosphorus (P) is a non renewable resource which highlights the significance of developing and using alternative sources of P for a sustainable agriculture. Animal manure is an option but its application to soils to meet crop nitrogen needs requires careful management practices to minimize freshwater eutrophication. The aim of this work was to evaluate th...

Emergency Hartmann´s procedure: short term outcomes in the old and the very old

Objectives: Emergency Hartmann´s procedure is associated with significant morbidity and mortality, particularly in the elderly populations. Our aim is to compare the short term outcomes of old [65-80 years old[ and very old patients (80 or more) submitted to this procedure. Materials: Between January 2008 and December 2012 we submitted to emergency Hartmann´s procedure 105 patients: 65 old and 40 very old. We r...

P-POSSUM as a predictor of colorectal surgical mortality in elderly patients

The PPOSSUM score is considered an adequate predictor of surgical mortality in colorectal surgery. The proportion of elderly surgical patients is rising. They must be considered as a different population. Our aim was to evaluate the predictive value of P-POSSUM for colorectal surgical mortality in patients age 80 or more. Retrospective observational study. Patients with 80 years old or more who underwent color...

Colorectal surgical mortality and morbidity in elderly patients: comparison of ...

Validation of a PNA-FISH method for the detection of Helicobacter pylori

Here, we evaluated a previously established peptide nucleic acid-fluorescence in situ hybridization (PNA-FISH) method as a new diagnostic test for Helicobacter pylori clarithromycin resistance detection in paraffin-embedded gastric biopsy specimens. Both a retrospective study and a prospective cohort study were conducted to evaluate the specificity and sensitivity of a PNA-FISH method to determine H. pylori cla...

Folheto do Projeto Rose4Pack

Modelling the extrusion cooling/calibration stage for complex thermoplastic pro...

The main objective of this work is to implement a 3D non-isothermal multi-domain numerical code, based on finite volume method, able to deal with unstructured meshes that can be used to aid the design of calibration/cooling systems. At the final stage the code should incorporate the major phenomena that take place during profile cooling, including the prediction of the developed thermal residual stresses.

Characterization of the heat transfer coefficient in thermoplastic profile extr...

The main objective of this work is to design a prototype system that will enable the determination of realistic values for h at the interface polymer-calibrator in real and varied extrusion conditions. The data obtained will allow improving the accuracy of the numerical codes that are being developed by the research team, through the implementation of realistic models for h.