Publicaties

People frequently fail to see themselves as environmentally conscious consumers; one reason for this is that they are oftentimes prone to dismissing their more common ecological behaviors (e.g., avoid littering) as non-diagnostic for that particular self-image. The cueing of commonly performed ecological behaviors as environmentally friendly (what we call positive cueing) renders both cued and non-cued common ecological behaviors more diagnostic ...

Background and Purpose: Individuals with Parkinson disease exhibit decreased axial head-pelvis rotation. Consequently, they turn more en bloc than healthy controls, which may contribute to freezing during turning. We wanted to understand the influence of auditory cueing and an attentional strategy on turning and how this related to freezing of gait (FOG). Methods: Fifteen participants with Parkinson disease and FOG were asked to turn 180. during ...

BACKGROUND: Handwriting is often impaired in Parkinson's disease (PD). Several studies have shown that writing in PD benefits from the use of cues. However, this was typically studied with writing and drawing sizes that are usually not used in daily life. OBJECTIVE: This study examines the effect of visual cueing on a prewriting task at small amplitudes (≤1.0 cm) in PD patients and healthy controls to better understand the working action of ...

During curing of thermosetting polymers, crosslinking results in hardening or stiffening of the material. In electronics, for example in encapsulating integrated circuits (die bonding), thermosets are fully cured in a controlled environment (under UV-light or within a thermal oven) such that the highest stiffness possible has been achieved. In building materials, specifically in thermosets used in fastening systems (adhesive anchoring), ...

Research in 3D concrete printing has gained an exponential increase in attention over the last decades. The automated production process can be beneficial to reduce material use and increase form freedom of produced elements. Disadvantages are the difficulty to apply reinforcement, the speed of execution if massive elements have to be made and the uncertain durability performance of the printed material. These aspects still lead to reticence in ...

The present study demonstrates a combination of elastic and electro-magnetic wave based Non-Destructive Testing (NDT) techniques for the monitoring of the curing state of textile reinforced cement (TRC). Millimetre wave (MMW) spectrometry, was used as a non-contact high resolution electromagnetic technique that was able to monitor the chemical reactions involved in the hydration of cement, and the evaporation of water. In addition, Ultrasound ...

The propagation of longitudinal ultrasonic waves through fresh and hardened concrete is strongly affected by dispersion and this is clearly indicated experimentally from the change of phase velocity at low frequencies. Analytically, only few attempts have been made to explain this dispersive behavior through enhanced elastic theories. The most commonly used higher order theory is the strain gradient elastic ...

Uncured and nitrite-cured chicken, pork, and beef were used as low, medium, and high sources of heme-Fe, respectively, and exposed to an in vitro digestion model simulating the mouth, stomach, duodenum, and colon. With increasing content of iron compounds, up to 25-fold higher concentrations of the toxic lipid oxidation products malondialdehyde, 4-hydroxy-2-nonenal, and other volatile aldehydes were formed during digestion, together with ...