Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Title
Now showing items 462-481 of 1036
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Conference Object
The Linear and Nonlinear Ultrasound Field of Convex Arrays Operating in a Diverging Wave Mode
(2018)High frame rate (ultrafast) ultrasound imaging has received a lot of attention recently. Ultrafast imaging facilitated innovations such as shear wave elastography, super-resolution imaging, and ultrafast contrast-enhanced ...
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Linear dependencies in fourth-rank turbulence tensor models
(1998)In turbulence modeling, and perhaps elsewhere, one encounters the need to model a fourth-rank tensor Mijpq, which is symmetric in ij and pq, in terms of a second-rank symmetric tensor bij. It has commonly been assumed that ...
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Conference Object
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Linking local-climate-zones mapping to multi-resolution-analysis to deduce associative relations at intra-urban scales through an example of Metropolitan London
(2019)In this paper, we propose a systematic approach that translates geographically-based information data, into complete versatile gridded numerical information for use in comparative data analyses and atmospheric or other ...
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Linking the urban-scale building energy demands with city breathability and urban form characteristics
(2019)In this paper we examine the energy demands required for building heating and cooling over a real urban area and how these relate to urban microclimatic parameters
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Local structure and influence of bonding on the phase-change behavior of the chalcogenide compounds K1-xRbxSb5S8
(2007)KSb5S8 and its solid solution analogs with Rb and Tl were found to exhibit a reversible and tunable glass→crystal→glass phase transition. Selected members of this series were analyzed by differential scanning calorimetry ...
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Conference Object
Long-term performance of a commercial thermoelectric power generator
(Affiliation: Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceAffiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, CyprusCorrespondence Address: Hatzikraniotis, E.Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece, 2009)In this work, thermoelectric device was made, using a commercially available ThermoElectric Generator (TEG), in order to measure the gained power and efficiency for long- term performance. The module was subjected to ...
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Conference Object
Long-time Stability of Mg2(Si-Sn-Ge) - Based Thermoelectrics Under Large Temperature Gradient Conditions
(Elsevier Ltd, 2015)We study the thermoelectric properties and stability of Mg2(Si-Sn-Ge) composite, prepared by a combination of ball milling process and heating treatment followed by Spark Plasma Sintering and densification. The goal of ...
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Article
Losartan treatment enhances chemotherapy efficacy and reduces ascites in ovarian cancer models by normalizing the tumor stroma
(2019)In ovarian cancer patients, tumor fibrosis and angiotensin-driven fibrogenic signaling have been shown to inversely correlate with survival. We sought to enhance drug delivery and therapeutic efficacy by remodeling the ...
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Low temperature and cost-effective growth of vertically aligned carbon nanofibers using spin-coated polymer-stabilized palladium nanocatalysts
(2015)We describe a fast and cost-effective process for the growth of carbon nanofibers (CNFs) at a temperature compatible with complementary metal oxide semiconductor technology, using highly stable polymer-Pd nanohybrid colloidal ...
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Low temperature growth of In 2O 3 and InN nanocrystals on Si(111) via chemical vapour deposition based on the sublimation of NH 4Cl in In
(2009)Indium oxide (In 2O 3) nanocrystals (NCs) have been obtained via atmospheric pressure, chemical vapour deposition (APCVD) on Si(111) via the direct oxidation of In with Ar:10% O 2 at 1000 °C but also at temperatures as low ...
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Conference Object
Low temperature synthesis and characterization of PbTe-based materials
(Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, 1678 Nicosia, CyprusCorrespondence Address: Papageorgiou, C.Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, 1678 Nicosia, Cyprus, 2012)In the present work, PbTe and PbTe with Pb precipitates have been synthesized by low temperature synthesis. Selected materials were ball milled in order to explore the potential of this processing. The initial materials ...
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Low Temperature Synthesis as a Route for Highly Thermoelectric Efficient Na-Doped PbTe
(2018)In this work, Na-doped PbTe is synthesized through a low temperature synthesis technique. This method provides highly efficient p-type PbTe using a synthesis temperature much lower than the PbTe melting point and as low ...
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A low-Mach methodology for efficient direct numerical simulations of variable property thermally driven flows
(2019)Thermally driven flows can be approximated as constant property flows only when temperature differences are relatively small. In that case, the Oberbeck-Boussinesq approximation holds and the set of governing equations is ...
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Low-temperature growth of NiMnSb thin films by pulsed-laser deposition
(2002)We report the growth of thin films of the ferromagnetic half-Heusler alloy NiMnSb by pulsed-laser deposition on Si (111) and polycrystalline InAs substrates. Highly crystalline films are grown using low substrate temperatures ...
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Low-temperature synthesis and thermoelectric properties of n-type PbTe
(2013)n-Type PbTe compounds were synthesized at temperatures as low as 430 C. After synthesis, the materials were ground, cold pressed and sintered at 600 C. The effect of this low-temperature synthesis on the structural features ...
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Conference Object
Machine learning algorithms for photovoltaic system power output prediction
(2018)Accurate photovoltaic (PV) production forecasting is necessary for the optimal integration of this technology into existing power systems and is important for both grid and plant operators. The purpose of this work is to ...
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Macro and Micro-Scale Features of Thermoelectric PbTe (Br, Na) Systems: Micro-FTIR Spectroscopy, Micro-Seebeck Measurements, and SEM/EDX Observations
(2014)In this work, n-type and p-type PbTe doped with Br and Na, respectively, were thoroughly examined to determine the effect of the dopant on microstructure. Macro and micro homogeneity of the samples were studied by means ...
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Conference Object
Magnetic carbon nanofibers deriving from electrospun cellulose/Fe3O4 fibrous nanocomposites
(2019)