Filtyp
Proprioception of the knee was measured in 19 healthy individuals to evaluate whether there were any differences between extension and flexion movements from two different starting positions. The threshold before detecting a passive movement, visual estimation on a protractor of a passive change in position (30 degrees angular change) and active reproduction of the same angular change were registe
Background: The positive effects of Kangaroo mother care in NICU’s are well documented but, to a lesser extent, explored during inter-hospital neonatal transport. Inter-hospital transport, with the infant placed in a transport incubator, increases the risk of separation while infants in Kangaroo mother care position implies that the parents accompany the transport. There exists limited knowledge i
n this study, Jordanian feldspar from Wadi Al-Jayshiah area was invested to evaluate its applicability as raw material for ceramic and industries. The chemical analysis indicated that the average Fe2O3 content is 2.33%, which is very high, compared to commercial ceramic and glass grades feldspar. The SiO2 content in the Wadi Al-Jayshiah feldspar (67.96%) lies within the required amount in commerci
Materials with heterogeneous microstructures have been reported to have an attractive combination of strength and ductility. This is attributed to synergistic strengthening effects from the difference in strength of fine- and coarse-grained regions. Understanding the interaction of the regions is crucial for further optimization of the microstructures. In this work, we fabricated nickel of harmoni
This study documents how the pore structure develops with time in cement-based materials with varying fly ash replacement. Heat production was measured during the first days, water vapour desorption isotherms were determined at different times up to 18 months, and moisture transport properties were measured after one year. Long-term fly ash reactions alter the pore structure considerably. The fly
The invention of the laser in 1960 gave us the ruby laser, which generally produced chaotic pulses of light. Six years later, in 1966, a concept called passive mode-locking applied to neodymium-glass lasers produced reasonably well-behaving picosecond pulses. This triggered an intense activity, with respect to developing improved laser pulse sources, measurement techniques, and application to chem
Objective: To evaluate the long-term performance of the patch materials we have used to augment the pulmonary arterial tree across a wide spectrum of diagnoses and anatomical locations. Methods: Retrospective, single-center review of 217 consecutive pediatric patients at a tertiary referral center from 1993 to 2020 who underwent patch arterioplasty of the pulmonary arterial tree from the pulmonary
Cross-laminated timber (CLT) is an engineered wood product constructed by combining multiple layers of wood lamellae with adhesives. In the serviceability state, structural timber elements, that are light–weight, are more susceptible to complications regarding the vibration level, than heavier structural elements such as concrete. Contemporary standard practice in the building industry, is to use
In order to diagnose and fully correlate structural, chemical, and functional features of macromolecules and particles in solution, we propose the integration of spectroscopy and scattering on the same measuring volume and at the same time in a dedicated sample environment with multiple probes. Combined SAXS/UV-vis and SAXS/Raman information are employed to study the radiation damage effect in pro
The entrapment of bacterial cells within inorganic silica materials was reported almost 20 years ago. However, almost all studies to date have shown that these entrapped cells are unable to divide and thus should be expected to have reduced promoter activity. In view of the importance of bacteria as model systems for both fundamental and applied biological studies, it is crucial that immobilized c
Wildfire has become a major disturbance agent in Mediterranean area, with Galicia in the north-west of Spain having the most frequent fires. In order to combat soil erosion, different post-fire stabilization treatments can be applied, like adding different mulch materials. In a laboratory experiment we evaluated the effect of adding plant residues, commonly used in post-fire rehabilitation (wheat
A numerical approach for moisture transport in porous materials like concrete is presented. The model considers mass balance equations for the vapour phase and the water phase in the material together with constitutive equations for the mass flows and for the exchange of mass between the two phases. History-dependent sorption behaviour is introduced by considering scanning curves between the bound
Synchrotron X-ray diffraction patterns for highly crystalline MCM-41 a mesoporous silicate molecular sieve are presented. The form factor observed in seven orders of diffraction is used to show the existence of a two-layer wall structure, with a narrower mesopore than previously assumed, and much void space in the walls.
Food wastage during distribution, retail sale, and consumption is a concern of great worry. It not only affects the economics of businesses but also puts natural resources under severe stress. For example, in the UK some 800,000 tons of bakery products are purchased each year and never eaten, mainly due to short life span of the product. Earlier investigations at Lantmännen Unibake, UK have identi
The packaging market is starting to demand renewable materials to face out the fossil based materials mainly used today. This thesis investigate the possibility and advance to switch from conventional grades of polyethylene (PE) and polyethylene terephthalates (PET) towards bio-produced qualities of the same polymers. The work is divided into two parts starting with a carbon dioxide evaluation of
The accurate identification of non-metallic inclusions (NMIs) within steel matrices is critical for high-quality steel production. This study employs synchrotron radiation-based X-ray absorption photoemission electron microscopy (X-PEEM) to investigate NMIs in ultra-high-strength steels. Ca-L2,3-edge X-ray absorption spectra were acquired for six NMIs at both room temperature and 400 °C, allowing
An experimental campaign has been carried out with the aim of providing an insight into the fracture processes occurring during the cutting of different types of polymers, with features ranging from typically brittle to soft hyperelastic behaviour. The steady state of cutting is investigated using a sharp thin blade, and tracking the insertion force versus the penetration displacement. For soft, h
A computational framework for modelling damage-induced softening in fibre-reinforced materials is presented. The main aspect of this framework is the proposed non-local gradient-enhanced continuum damage formulation. At the material level, the elastic constitutive behavior is defined by a hyperelastic functional including a volumetric and an isochoric contribution. The isochoric contribution is su
