Healthcare providers in the field of physical and rehabilitation medicine play a vital role to help patients suffering spasticity readapting themselves to their normal daily activities. Mathematical modeling of spasti...
Healthcare providers in the field of physical and rehabilitation medicine play a vital role to help patients suffering spasticity readapting themselves to their normal daily activities. Mathematical modeling of spasticity has the potential to avoid the issue of variability in the assessment of spasticity using the Modified Ashworth scale (MAS). In this work, an existing mathematical model for upper limb spasticity is verified using clinical data sets of upper limb spasticity collected in Malaysia at the level of MAS 1+. The data set consists of torque values measured at each elbow angle as the elbow extends from a full flexion position to a full extension position during slow and fast stretch of the forearm. The aim is to find out the capability of the mathematical model and lay a foundation for the future work on data-driven modeling of upper limb spasticity based on the Modified Ashworth Scale.
First prototypes of bi-directional OLED microdisplay devices have been designed, that combine both display and camera functionality on a single CMOS chip (OLED-on-CMOS). Major aim of this integration is to provide cap...
First prototypes of bi-directional OLED microdisplay devices have been designed, that combine both display and camera functionality on a single CMOS chip (OLED-on-CMOS). Major aim of this integration is to provide capabilities for eye-tracking in see-through HMD to achieve gaze-based human-display-interaction, e.g. in augmented-reality applications.
The effects of highly dispersed (≤ 0.1mg/cm2) noble metal catalysts (e.g. Pd, Pt, Ir and Ru) on the electrochemical performance of screen printed La0.84Sr0.16MnO3 cathodes was investigated. At typical operating condi...
The effects of highly dispersed (≤ 0.1mg/cm2) noble metal catalysts (e.g. Pd, Pt, Ir and Ru) on the electrochemical performance of screen printed La0.84Sr0.16MnO3 cathodes was investigated. At typical operating conditions (e.g. T=1273K, η= −0.1V), the current density in presence of palladium is increased by about one order of magnitude as compared to the current density obtained with pure La0.84Sr0.16MnO3 cathodes. At the same time, the apparent activation energy of the oxygen reduction reaction is decreased from ≈ 2eV (without catalyst) to ≈ 1eV (with Pd).
With single elements weighing up to hundreds of tonnes and lifted to heights of 100 meters, offshore wind turbines can pose risks to personnel, assets, and the environment during installation and maintenance intervent...
With single elements weighing up to hundreds of tonnes and lifted to heights of 100 meters, offshore wind turbines can pose risks to personnel, assets, and the environment during installation and maintenance interventions. To increase safety during offshore lifts, this study focuses on solutions for human-free lifting operations. Ideas in the categories of logistics, connections, as well as guidance and control, were discussed and ranked by means of a multi-criteria decision analysis. Based upon 38 survey responses weighting 21 predefined decision criteria, the most promising concepts were selected. Logistically, pre-assembled systems would reduce the number of lifts and thus reduce the risk. A MATLAB-based code has been developed to optimise installation time, lifted weight, and number of lifts. Automated bolting and seafastening solutions have high potential to increase safety during the transport of the wind turbine elements and, additionally, speed up the process. Finally, the wind turbine should be lifted on top of the support structure without having personnel being under the load. A multi-directional mechanical guiding element has been designed and tested successfully in combination with visual guidance by cameras in a small-scale experiment.
A key factor for assessing the state of the heart after myocardial infarction (MI) is to measure whether the myocardium segment is viable after reperfusion or revascularization therapy. Delayed enhancement-MRI or DE-M...
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We summarize the results of investigation of spectral-kinetic characteristics of the luminescence of F+ and F-centers in Al2O3, YAlO3 (YAP) and Y3Al5O12 (YAG) crystals under excitation by synchrotron radiation in the ...
We summarize the results of investigation of spectral-kinetic characteristics of the luminescence of F+ and F-centers in Al2O3, YAlO3 (YAP) and Y3Al5O12 (YAG) crystals under excitation by synchrotron radiation in the transmittance and fundamental absorption ranges of these oxides. We show that the luminescence of F+ and F centers in the mentioned crystals can be excited via the corresponding intrinsic 1A→2A, 2B and 3P (F+) and 1S→3P, 1P (F) transitions of these centers, as well as via the radiative relaxation of excitons localized around F+ and F centers. In YAG crystal fast (2.3 ns) emission in the 400 nm band, excited at 3.33, 5.37 and 6.56 eV, arises from the F+-type centers, localized around YAl antisite defects (ADs). In Al2O3 and YAP crystals, the luminescence of excitons localized around F+ centers (LE(F+) centers) is revealed and the energies of formation of such excitons are determined as well. In YAG crystal the observation of the luminescence of LE(F+) centers is obscured due to presence of the large content (~0.2 at.%) of YAl ADs and formation of an excitons localized around YAl ADs and dimer F+-ADs centers.
Porous alumina is a popular material with numerous application fields. A post-CMOS compatible process chain for the fabrication of nanoporous surface based on Al2O3 by atomic layer deposition (ALD) is presented. By al...
Porous alumina is a popular material with numerous application fields. A post-CMOS compatible process chain for the fabrication of nanoporous surface based on Al2O3 by atomic layer deposition (ALD) is presented. By alternately applying small numbers of ALD cycles for Al2O3 and ZnO, a homogenous composite was accomplished, for which the principle of island growth of ALD materials at few deposition cycle numbers was utilised. By selective texture-etching of ZnO content via hydrofluoric acid (HF) in vaporous phase at 40 °C and 10.67 mbar, a porous surface of the etch resistant Al2O3 could be achieved. TOF-SIMS investigations verified the composition of ALD composite, whereas AFM and high resolution SEM images characterised the topographies of pre- and post-etched samples. Pores with opening diameters of up to 15 nm could be detected on the surface after vaporous HF treatment for 2 minutes. The amount of pores increased after an etching time of 5 minutes.
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