Comparison of metagenomic profile of patients, meeting criteria for non-celiac gluten sensitivity, with and without response to restrictive diets

Podeu consultar el III Workshop anual INSA-UB complet a: http://hdl.handle.net/2445/118993Sessió 2. Pòster núm. 2

Analytical modelling of high velocity impacts of cylindrical projectiles on carbon/epoxy laminates

8 pages, 15 figures.-- Special Issue: JNC 15 - 15èmes Journées Nationales sur les Composites (Marseille, France, Jun 6-8, 2007).In this work an analytical model has been developed in order to predict the residual velocity of a cylindrical steel projectile, after impacting into a woven carbon/epoxy thin laminate. The model is based in an energy balance, in which the kinetic projectile energy is absorbed by the laminate through three different mechanisms: linear momentum transfer, fiber failure and laminate crushing. This last mechanism needs the quantification of the through-thickness compressive strength, which has been evaluated by means of quasi-static punch tests. Finally, high velocity impact tests have been accomplished in a wide range of velocities, to validate the model.This research was done with the financial support of the University Carlos III of Madrid and of the Comunidad Autónoma de Madrid under Projects CCG08-UC3M/MAT-4464 and CCG08-UC3M/DPI-4348.Publicad

Modeling high-speed impact on CFRP's with an energy balance equation

Proceeding of: 19th DYMAT Technical Meeting: Dynamic Mechanical Behaviour of Polymers and Composites, Strasbourg, France, 1-3 December 2010In this work an analytical model has been developed in order to predict the residual velocity of a spherical or cylindrical steel projectile, after impacting into a woven carbon/epoxy thin laminate. The model is based in an energy balance, in which the kinetic projectile energy is absorbed by the laminate through three different mechanisms: linear momentum transfer, fiber failure and laminate crushing. This last mechanism needs the quantification of the through-thickness compressive strength, which has been evaluated by means of quasi-static punch tests. Finally, high velocity impact tests have been accomplished in a wide range of velocities, to validate the model.Authors would like to acknowledge to the Center for the Development of Industrial Technology (CDTI) of Spain and to the company AERNNOVA Aerospace for the financial support of this research

Ultrasonographic contrast agents versus sonoelastography in digestive diseases

A review is made of the indications of ultrasonographic contrast enhancement as applied to conventional ultrasonography and endocopic ultrasonography (EUS) as opposed to the use of EUS-sonoelastography today

Diagnostic protocol for pancreatic neuroendocrine tumors (PNETs)

The advent of endoscopic ultrasonography (EUS) or echoendoscopy (EE) represented a breaking point in the localization and diagnosis of PNETs (1-4) (insulinomas, gastrinomas, glucagonomas, non-functioning, etc.) as it provided a high yield (sensitivity around 90%, specificity at 98%) (5- 10) only second to EUS-FNA (almost 100%) (10-15). New EUS-related technologies such as contrast media and elastography have also improved PNET localization (16-22) with percentages matching those obtained with EUS-FNA

Stroke risk and NSAIDs: A systematic review of observational studies

Aims: To perform a quantitative systematic review of observational studies on the risk of stroke associated with the use of individual NSAIDs. Methods and results: Searches were conducted using the Medline database within PubMed (1990-2008). Observational cohort or case-control studies were eligible if reported on the risk of cardiovascular events associated with individual NSAIDs versus the nonuse of NSAIDs. We found 3193 articles, in which 75 were eligible for review and abstraction. Of the 75 articles, 6 reported relative risk (RR) of stroke. Data were abstracted into a database using a standardized entry form. Two authors assessed study quality, and discrepancies were resolved by consensus. The pooled RR of all subtypes of incident stroke was increased with the current use of rofecoxib (RR=1.64, 95% CI=1.15-2.33) and diclofenac (RR=1.27, 95% CI=1.08-1.48). The pooled estimates for naproxen, ibuprofen, and celecoxib were close to unity. The risk of ischemic stroke was also increased with rofecoxib (RR=1.82, 95% CI=1.09-3.04) and diclofenac (RR=1.20, 95% CI=0.99-1.45). Data were inadequate to estimate the pooled RR by dose and duration, for other individual NSAIDs or nonischemic stroke subtypes. Conclusion: This meta-analysis supports an increased risk of ischemic stroke with the current use of rofecoxib and diclofenac. Additional studies are required to evaluate most individual NSAIDS, the effect of dose and duration, and the subtypes of stroke

Nutrition, diet and immunosenescence

Ageing is characterized by immunosenescence and the progressive decline in immunity in association with an increased frequency of infections and chronic disease. This complex process affects both the innate and adaptive immune systems with a progressive decline in most immune cell populations and defects in activation resulting in loss of function. Although host genetics and environmental factors, such as stress, exercise and diet can impact on the onset or course of immunosenescence, the mechanisms involved are largely unknown. This review focusses on identifying the most significant aspects of immunosenescence and on the evidence that nutritional intervention might delay this process, and consequently improve the quality of life of the elderly