Browsing by Subject "Stability"
Now showing items 120 of 24

Advanced materials for SOFC application: Strategies for the development of highly conductive and stable solid oxide proton electrolytes
(2016)The basic strategies of improving the stability of protonconducting electrolytes based on barium cerate (BaCeO3) by means of: (i) codoping, (ii) doping by nonmetallic elements and (iii) composites development, are ... 
Bifurcations and chaos in discretetime gonorrhea model
(2019)A deterministic epidemic model for the spread of gonorrhea is investigated in discretetime by taking into account the interval between successive clinical cases. It is shown that the discretetime dynamical system exhibits ... 
Buckling of unconfined and confined thinwalled steel cylinders under external pressure
(2008)The present paper investigates the structural stability of thinwalled steel cylinders subjected to uniform external pressure. A brief discussion of unconfined steel cylinder buckling is presented first. Subsequently, ... 
Copper foams in water treatment technology: Removal of hexavalent chromium
(2015)Opencell copper foams were prepared using a space holder technique and tested as filterbeds for the uptake and reduction of Cr(VI) in drinking water. The use of raw cane sugar as a space holder provides an environmentally ... 
Development and Evaluation of a Phospholipidsterolprotein Membrane Resembling System
(2015)The development and evaluation of a phospholipidsterolprotein membrane resembling system containing betalactoglobulin (betaLg) has been studied. Liposomes have been successfully employed for the protection, controlled ... 
Effect of retained austenite stability on cyclic deformation behavior of lowalloy transformationinduced plasticity steels
(2019)The retained austenite (RA) characteristics of Alcontaining TRIP700 steels have been manipulated using varying bainitic isothermal transformation (BIT) processing. The microstructural evolution was investigated using ... 
Examining the stability of genetic risk effect as evidence accumulates in the context of metaanalysis
(2013)The recursive cumulative metaanalysis (RCM) of genetic association studies explores the relative change of the cumulative risk effect (e.g. OR) in time, indicating the stability of risk effect as evidence accumulates. ... 
Finite element analysis of cyclicallyloaded steel pipes during deep water reeling installation
(2016)Thickwalled steel pipes during their installation in deep water are subjected to combined loading of external pressure and bending, which may trigger structural instability due to excessive pipe ovalization. In the case ... 
An investigation of WC stability during the preparation of Pt@WC/OMC via a pulse microwave assisted polyol method
(2015)In the present work, the WC stability during the preparation of Pt@WC/OMC (Ordered Mesoporous Carbon) electrocatalysts, through a pulse microwaveassisted polyol method, is investigated by the aid of Xray diffraction and ... 
Nonassociative J2 plasticity model for finite element buckling analysis of shells in the inelastic range
(2016)The development and numerical implementation of a specialpurpose constitutive model is described for investigating the structural stability of cylindrical metal shells under axial compression and bending, which buckle in ... 
Noninteracting control for helicopter in straight horizontal flight
(1998)Pitch angle and forward velocity are decoupled via a static state feedback law for the case of helicopter in straight horizontal flight. The set of stability derivatives for which decoupling is satisfied, is explicitly ... 
Nonrecursive solution for the discrete algebraic Riccati equation and X plus A*X1 A = L
(2015)In this paper, we present two new algebraic algorithms for the solution of the discrete algebraic Riccati equation. The first algorithm requires the nonsingularity of the transition matrix and is based on the solution of ... 
Ordered mesoporous tungsten carbide/carbon composites promoted Pt catalyst with high activity and stability for methanol electrooxidation
(2014)The current anode materials used for direct methanol fuel cells (DMFCs) are expensive and not sufficiently durable for commercial development. One of the major challenges lies in the development of an inexpensive, efficient ... 
Oxygen Vacancy and Core–Shell Heterojunction Engineering of AnemoneLike CoP@CoOOH Bifunctional Electrocatalyst for Efficient Overall Water Splitting
(2022)Constructing costefficient and robust bifunctional electrocatalysts for both neutral and alkaline water splitting is highly desired, but still affords a great challenge, due to sluggish hydrogen/oxygen evolution reaction ... 
A parametric study of the aeroelastic behaviour of wind turbine blades in classical flutter
(2006)A parametric study of the aeroelastic behaviour of a wind turbine blade 'typical section' in classical flutter is presented, using a new numerical model. The aerodynamic loads are computed by solving the RANS equations ... 
Pitch and flight path control with simultaneous forward gust rejection
(1999)The problem of rejecting atmospheric disturbances with simultaneous inputoutput decoupling of the pitch angle and the flight path angle of an aircraft, is studied. The problem is proven to be solvable for almost all flight ... 
Recent activity in the development of protonconducting oxides for hightemperature applications
(2016)Hightemperature protonconducting materials constitute a unique class of oxide materials, which are able to exhibit protonic conductivity under hydrogencontaining atmospheres. Besides being of great fundamental interest, ... 
Revisiting the dynamics of forest area change: A panel data assessment
(2020)This study employs a panel dataset on forest area of 22 countries and for the time period 19952016 in order to provide an uptodate assessment on determinants of forest area change. Our set of explanatory variables is ... 
Robust inputoutput decoupling via static measurement output feedback
(1999)In this paper the problem of robust inputoutput decoupling for linear systems with nonlinear uncertain structure (NLUS), via an independent from the uncertainties static measurement output feedback law, is studied. The ... 
Rotary gust rejection for helicopters
(1998)For the case of helicopters in straight horizontal flight, the effects of a rotary gust to the forward velocity and the downward velocity of the helicopter are rejected. The rotor commands appear to be independent, i.e. ...