Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Title
Now showing items 230-249 of 1036
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Conference Object
Effect of links’ center of gravity position on the performance of a four-bar linkage as an upper limb rehabilitation mechanism: A parametric study
(Springer Verlag, 2016)It has been shown that mechanisms based on closed kinematic chains, with integrated passive elements (springs) can generate motions that replicate the natural hand motion and therefore they can be potentially useful in ...
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Article
Effect of microstructure on the thermoelectric performance of La1−xSrxCoO3
(2016)We present a case where the microstructure has a profound effect on the thermoelectric properties of oxide compounds. Specifically, we have investigated the effect of different sintering treatments on La1−xSrxCoO3 samples ...
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Article
Effect of porosities on tensile properties of laser-welded Al-Li alloy: an experimental and modelling study
(2018)Aluminium–lithium (Al-Li) alloys are very attractive for aerospace applications due to their outstanding properties, such as high specific strength, high rigidity and good resistance to corrosion and fatigue, compared to ...
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Article
Effect of silicon nitride/oxide on the structure and the thermal conductivity of CoSi nanocomposites
(2017)In this work, the fabrication of nanocomposites with silicon nitride/oxide into the thermoelectric matrix of cobalt silicide is presented. The different concentrations of nano-Si3N4 were intentionally introduced by mechanical ...
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Article
Effect of sintering in ball-milled K 2Bi 8Se 13 thermoelectric nano-composites
(2012)K 2Bi 8Se 13 has many attractive features for thermoelectric applications. Recently, K 2Bi 8Se 13-based nanocomposite materials, consisting of nano-crystalline, micro-crystalline and amorphous phases, have been fabricated ...
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Article
The effect of the phase of transmission on contrast agent echoes
(1998)Ultrasound contrast agents consist of a gas bubble, encapsulated by a shell for stabilization. The shell dampens the fluctuations in the bubble radius when insonified. The detection of contrast microbubbles during a medical ...
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Article
The effect of the phase of transmission on contrast agent..
(1998)Presents an experimental study which examined the effect of the phase of sonification signal on the ultrasound contrast agent by the bubble echo. Experimental methods
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Conference Object
Effect of turbulent pulsating flow around a near-wall submerged cylinder on the potential motion of bed and suspended loads
(International Society of Offshore and Polar Engineers, 2016)In the present work, the pulsating flow around a submerged cylinder close to the impermeable seabed is examined by means of Large Eddy Simulations (LES). A Reynolds number equal to Re = 5000 is considered, based on the ...
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Article
Effect of vacancy doping on the Haldane spin-liquid state in PbNi2-xMgxV2O8
(2002)The effect of spin-vacancy doping on the ground state of the quasi-one-dimensional S=1 quantum antiferromagnet PbNi2V2O8 is studied by X band as well as high-field ESR. A very broad ESR line is observed at low temperatures ...
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Book Chapter
Effective utilization of liquefied natural gas for distributed generation
(Nova Science Publishers, Inc., 2015)Liquefied natural gas (LNG) is considered a safe and transportable fuel and could become a fueling option for distributed generation applications, particularly in locations which are situated far from centralized power ...
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Article
Effects of air embolism size and location on porcine hepatic microcirculation in machine perfusion
(2014)
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Conference Object
Effects of periodic gravity modulation in microgravity convection systems
(Publ by ASME, 1993)Natural convection in an enclosure that is subjected to periodic excitations is investigated using a classical mixed Galerkin finite element method. The modulation is incorporated in the momentum equations, through a ...
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Article
Effects of rotation on the oscillatory flow over ripples
(2015)Large-eddy simulations (LES) of oscillating turbulent boundary layers, over a rippled bed, subjected to frame rotation are presented. This flowis archetypal of a bottom-ocean, tidally driven boundary layer developing over ...
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Article
Effects of selective water withdrawal schemes on thermal stratification in Kouris Dam in Cyprus
(2008)Thermal stratification and its seasonal variations in Kouris Dam in Cyprus were simulated, and the impact of five different water withdrawal schemes was studied, using the 2-D, laterally averaged CE-QUAL-W2 reservoir model. ...
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Article
Effects of the consistency of the fringing magnetic field on direct numerical simulations of liquid-metal flow
(2011)We investigate the effects of the consistency of strong fringing decreasing magnetic fields on numerical simulations of classical experimental data. Studies about fringing magnetic fields have attracted the attention of ...
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Article
Effects of the Sapphire Nitridation on the Polarity and Structural Properties of GaN Layers Grown by Plasma-Assisted MBE
(2001)The nitridation of the (0001) sapphire surface by a nitrogen rf-plasma source used in GaN molecular beam epitaxy has been investigated. Auger electron spectroscopy measurements were used to estimate the extent of the ...
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Article
Efficiency study of a commercial thermoelectric power generator (TEG) under thermal cycling
(2010)Thermoelectric generators (TEGs) make use of the Seebeck effect in semiconductors for the direct conversion of heat to electrical energy. The possible use of a device consisting of numerous TEG modules for waste heat ...
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Article
An efficient computational fluid-particle dynamics method to predict deposition in a simplified approximation of the deep lung
(2018)High-fidelity simulations of the complete airway tree are still largely beyond current computational capabilities. Towards large-scale simulations of the human lung, the current study introduces a numerical methodology to ...
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Article
An efficient computational fluid-particle dynamics method to predict deposition in a simplified approximation of the deep lung
(2018)High-fidelity simulations of the complete airway tree are still largely beyond current computational capabilities. Towards large-scale simulations of the human lung, the current study introduces a numerical methodology to ...
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Article
An efficient method for two-fluid incompressible flows appropriate for the immersed boundary method
(2019)The numerical simulation of two-fluid flows with sharp interfaces is a challenging field, not only because of their complicated physical mechanisms, but also because of increased computational cost. An efficient and robust ...