Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Title
Now showing items 650-669 of 1036
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Article
Palladium micellar nanohybrids with tunable nonlinear optical response
(2013)In the present work, the third-order nonlinear optical response of two different types of Pd-polymer micellar nanohybrids are investigated using 4 ns, visible and infrared laser excitation. The prepared nanohybrids were ...
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Palladium-based micellar nanohybrids: Preparation and nonlinear optical response
(2014)In the present work the synthesis and physicochemical characterisation of a new class of Pd-containing micellar nanohybrid systems are presented. The new systems consist of metallic Pd nanoparticles and well-defined diblock ...
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Article
Parameter estimation for semi-solid aluminum alloys using transient experiments
(2006)A rotating vane-cup rheometer is used to determine the rheological properties of semi-solid slurries, and a procedure is established for characterizing the rheology with emphasis given to the proper and self-consistent ...
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Article
Parametric study and cost analysis of a solar-heating-and-cooling system for detached single-family households in hot climates
(2015)A solar-heating-and-cooling (SHC) system, consisting of a flat-plate solar collector array, a hot water storage tank, and an absorption chiller unit is designed and modeled to satisfy thermal loads (space heating, domestic ...
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Partially yttria-stabilized zirconia coatings produced under plasma-assisted EBPVD with bipolar pulsed bias and under electron bombardment-assisted positive bias conditions
(1997)Previous research using radio frequency (rf) plasma-assisted electron beam (EB) PVD to deposit partially yttria-stabilized zirconia (PYSZ) thermal barrier coatings has shown the benefits of this method in terms of structure ...
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Article
Particle deposition in a realistic geometry of the human conducting airways: Effects of inlet velocity profile, inhalation flowrate and electrostatic charge
(2016)Understanding the multitude of factors that control pulmonary deposition is important in assessing the therapeutic or toxic effects of inhaled particles. The use of increasingly sophisticated in silico models has improved ...
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Conference Object
Particle simulation of crystal growth and settling under variable gravity
(American Institute of Aeronautics and Astronautics Inc, AIAA, 1999)A model that describes crystal growth and motion is presented. The model is based on concept of the direct simulation Monte Carlo and molecular dynamics methods and includes spherical crystal particles, nutrients species ...
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Conference Object
Particle-fluid dynamics under variable gravity conditions
(Affiliation: Mechanical Engineering Department, Worcester Polytechnic Institute, Worcester, MA 01609, United StatesAffiliation: Northeastern University, Boston, MA 02111, United StatesCorrespondence Address: Mechanical Engineering Department, Worcester Polytechnic Institute, Worcester, MA 01609, United States, 2000)Crystals grown from specially prepared liquid solutions have important industrial applications. The efficiency of these crystals is usually a function of their size. Therefore, during the synthesis of the crystals, it is ...
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Conference Object
Particle-Laden Flow in a Physiologically Realistic Human Airway Bifurcation
(Springer International Publishing, 2018)Predicting regional deposition patterns of inhaled aerosols is important for the design and optimization of pharmaceutical formulations.
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Article
Particle-laden flow in a physiologically realistic human airway bifurcation
(2018)Predicting regional deposition patterns of inhaled aerosols is important for the design and optimization of pharmaceutical formulations. © 2018, Springer International Publishing AG.
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Article
Pb doping of In2O3 and their conversion to highly conductive PbS/In2S3-3xO3x nanowires with infra red emission
(2016)We have grown Pb doped In2O3 nanowires at 800°C which have the cubic bixbyite crystal structure of In2O3 and contain orthorhombic α-PbO. These had resistances up to ≈10 Ω and exhibited photoluminescence at 2.5 eV but we ...
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Article
Performance of the finite volume method in solving regularised Bingham flows: Inertia effects in the lid-driven cavity flow
(2014)We extend our recent work on the creeping flow of a Bingham fluid in a lid-driven cavity, to the study of inertial effects, using a finite volume method and the Papanastasiou regularisation of the Bingham constitutive model ...
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Conference Object
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Article
Perfusion quantification using dynamic contrast-enhanced ultrasound: The impact of dynamic range and gain on time–intensity curves
(2011)The objective of this study was to assess the impact of dynamic range and gain on perfusion quantification using linearized log-compressed data. An indicator-dilution experiment was developed with an in vitro flow phantom ...
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Conference Object
Permeability calculations in three-dimensional fiber networks
(Affiliation: Department of Chemical Engineering, University of Minnesota, United StatesAffiliation: Scientific Computation Research Center (SCOREC), RPIAffiliation: Department of Biomedical Engineering, University of Minnesota, United StatesCorrespondence Address: Stylianopoulos, T.Department of Chemical Engineering, University of MinnesotaUnited States, 2009)
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Conference Object
Permeability calculations in three-dimensional fiber networks with varying degrees of orientation
(Affiliation: Radiation Oncology, Harvard Medical School, Massachusetts General Hospital, Boston, MA 02129, United StatesAffiliation: Chemical Engineering and Materials Science, University of Minnesota, 151 Amundson Hall, Minneapolis, MN 55455-0132, United StatesAffiliation: Scientific Computation Research Center, Rensselaer Polytechnic Institute, Troy, NY 12180, United StatesCorrespondence Address: Stylianopoulos, T.Radiation Oncology, Harvard Medical School, Massachusetts General Hospital, Boston, MA 02129, United States, 2008)
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Article
Permeability calculations in three-dimensional isotropic and oriented fiber networks
(2008)Hydraulic permeabilities of fiber networks are of interest for many applications and have been studied extensively. There is little work, however, on permeability calculations in three-dimensional random networks. Computational ...
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Article
Phase Change with Density Variation and Cylindrical Symmetry: Application to Selective Laser Melting
(2019)In this paper we introduce an analytical approach for predicting the melting radius during powder melting in selective laser melting (SLM) with minimum computation duration. The purpose of this work is to evaluate the ...
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Article
Phase lock-on in periodically excited Bingham flow past a confined cylinder
(2019)The focus of the work is the “phase lock-on”, a well-known phenomenon observed in oscillating dynamical systems where the forcing and output frequencies are synchronized. This phenomenon appears to be universal with the ...
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Article
Phonon and electron anomalies in the perovskite superconductor (La1.85Sr0.15)Cu0.95Sn0.05O4
(1987)Mössbauer measurements have been made at 199Sn in the perovskite superconductors La1.85Sr0.15Cu1-xSnxO4. The Sn valence is 4+ for all concentrations. The temperature dependence of the mean-squared displacement for x=0.05 ...