A sensitivity analysis on the springback behavior of the Unconstrained Bending Problem

Sheet metal forming software is commonly used in the automotive and sheet metal\ud sectors to support the design stage. However, the ability of the currently available software to\ud accurately predict springback is limited. A sensitivity analysis of the springback behavior of a\ud simple product is performed to gain more knowledge into the various factors contributing to the\ud predictability of springback. The sensitivity analysis comprises both numerical and physical\ud aspects and results are reported in this article

Issue Competition without Electoral Incentives? A Study of Issue Emphasis in the European Parliament

Contains fulltext : 206089.pdf (publisher's version ) (Open Access)12 juni 201

Bacteriological quality and intake of acidified drinking water in Wistar rats is pH-dependent

The effects of acidification of drinking water on bacteriological quality and water intake in adult, male Wistar rats. was studied in 2 consecutive experiments. HCl was used to aeidify water to pH 2.5, 3.0 and 3.5. Control groups received untreatedtap or demineralized water. Acidification of water with HCl to pH 2.5 effectively prevented growth of aerobic bacteria in the drinking water bottles after a number of days, but also caused a reproducible decline in water intake when compared to untreated water. A reduced water intake may indicate disturbed wellbeing and may interfere with experimental results. Acidification to pH 3.0 also kept bacteriological counts low and did not reduce water intake when compared to rats drinkingnon-acidified water. Acidification to pH 3.5 led to high bacteriological counts after a few days. On the basis of these 2 experiments, acidification of drinking water with 1101 to pH 3.0 is advised

OCP acquires FTTH player

PURPOSE OF REVIEW: In this review, we highlight the most important cellular and molecular mechanisms that contribute to cardiac inflammation and fibrosis. We also discuss the interplay between inflammation and fibrosis in various precursors of heart failure (HF) and how such mechanisms can contribute to myocardial tissue remodelling and development of HF. RECENT FINDINGS: Recently, many research articles attempt to elucidate different aspects of the interplay between inflammation and fibrosis. Cardiac inflammation and fibrosis are major pathophysiological mechanisms operating in the failing heart, regardless of HF aetiology. Currently, novel therapeutic options are available or are being developed to treat HF and these are discussed in this review. A progressive disease needs an aggressive management; however, existing therapies against HF are insufficient. There is a dynamic interplay between inflammation and fibrosis in various precursors of HF such as myocardial infarction (MI), myocarditis and hypertension, and also in HF itself. There is an urgent need to identify novel therapeutic targets and develop advanced therapeutic strategies to combat the syndrome of HF. Understanding and describing the elements of the inflammatory and fibrotic pathways are essential, and specific drugs that target these pathways need to be evaluated

The State of Strain in Single GaN Nanocolumns As Derived from Micro-Photoluminescence Measurements

In the present paper, studies on the state of strain in single and ensembles of nanocolumns investigated by photoluminescence spectroscopy will be presented. The GaN nanocolumns were either grown in a bottom-up approach or prepared in a top-down approach by etching compact GaN layers grown on Si(111) and sapphire (0001) substrates. Experimental evidence for strain relaxation of the nanocolumns was found. The difference and development of the strain value for different nanocolumns could be verified by spatially resolved micro-photoluminescence on single nanocolumns separated from their substrate. A common D0X spectral position at 3.473 eV was found for all separated single GaN nanocolumns independent of the substrate or processing technique used, as expected for a relaxed system