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Items for "stability"
Descriptor Systems: A General Mathematical Framework for Modelling, Simulation and Control
Descriptor systems present a general mathematical framework for the modelling, simulation and control of complex dynamical systems arising in many areas of mechanical, electrical and chemical engineering...
Keywords: descriptor system, stability, controllability, observability, model reduction
08/2006 | at – Automatisierungstechnik, Oldenbourg WissenschaftsverlagTheoretical Study of Structure and Energetics of Gold Clusters with the EAM Method
Using the embedded-atom method as developed by Voter and Chen in combination with the variable metric/quasi-Newton and our own Aufbau/Abbau methods, we have identified the three most stable isomers of AuN clusters with N up to 150...
Keywords: Gold Clusters, Embedded-Atom Method Calculations, Structure, stability
07/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagDoped γ-Bi2O3: synthesis of microcrystalline samples and crystal chemical analysis of structural data
A series of microcrystalline products containing the γ-Bi2O3 phase doped with Co, Fe, Mn, Pb, Sb, Si, Ti, V and Zn has been prepared by solid state reaction...
Keywords: Bismuth oxide, stability, Unit cell parameters, Structural models, Bond valence
02/2007 | Zeitschrift für Kristallographie, Oldenbourg WissenschaftsverlagBuilding Multivariable Regression Models with Continuous Covariates in Clinical Epidemiology With an Emphasis on Fractional Polynomials
Objectives: In fitting regression models, data analysts must often choose a model based on several candidate predictor variables which may influence the outcome...
Keywords: Multiple regression, continuous variables, model building, fractional polynomials, stability
01/2005 | Methods of Information in Medicine, SchattauerSynthesis and biological evaluation of a 99mTc-labelled cyclic RGD peptide for imaging the v3 expression
Aim: The v3 integrin is involved in tumour induced angiogenesis and tumour metastasis. We describe the synthesis and evaluation of a 99mTc-labelled RGD analogue for the visualisation of v3 integrin expression...
Keywords: RGD-Peptide, alpha(v)beta3, Integrin, Stabilität, Angiogenese, Tumor Targeting.
01/2004 | Nuklearmedizin, SchattauerLong-term stability of relationships between reference materials for thromboplastins
Reference materials for thromboplastins are available from the World Health Organization (WHO) and the European Commission (EC)...
Keywords: Thromboplastin, reference material, stability, calibration
08/2006 | Thrombosis and Haemostasis, SchattauerStability and convergence of mixed discontinuous finite element methods for second-order differential problems
In this paper we develop an abstract theory for stability and convergence of mixed discontinuous finite element methods for second-order partial differential problems...
Keywords: mixed discontinuous finite element methods, second-order problems, stability, convergence, error estimates, characteristics
12/2003 | Journal of Numerical Mathematics, Walter de GruyterEffect of age on sexually dimorphic selenoprotein expression in mice
Clinical data suggest that selenium (Se) supplementation decreases disease predisposition and severity and accelerates recovery in a variety of pathologies...
Keywords: deiodinase, gender, stability, trace element, translational efficiency
10/2007 | Biological Chemistry, Walter de GruyterLong-term stability of endogenous B-type natriuretic peptide (BNP) and amino terminal proBNP (NT-proBNP) in frozen plasma samples
The aim of the present study was to assess the long-term stability of endogenous B-type natriuretic peptide (BNP) and amino terminal proBNP (NT-proBNP) in plasma samples stored at –20°C without addition of protease inhibitors (e.g., aprotinin)...
Keywords: Evaluation, Heart failure, natriuretic peptides, Plasma, stability
08/2004 | Clinical Chemical Laboratory Medicine, Walter de GruyterStabilization of H2O2 in the presence of Fe(II) and Mn(II) impurities under alkaline conditions
Stabilization of aqueous H2O2 solutions containing small amounts of transition metal impurities [e.g., Mn(II) and Fe(II)] was studied in terms of UV/Vis and electron spin resonance spectroscopy and oxygen concentration measurements at pH ?11...
Keywords: aspartic acid diethoxy succinate (AES), diethylenetriamine pentaacetic acid (DTPA), Fe(II), H2O2, Mn(II), Na-acrylate-3-allyloxide-2-hydroxy propane Na-sulfonate copolymer (Aqualic), Na-poly-alpha-hydroxy-acrylate (PHAS), stability
08/2007 | Holzforschung, Walter de GruyterA Parameterization of Reduced Stable Models and Controllers
This note addresses the problem of instability in both model and controller reduction methods based on similarity transformations...
Keywords: model reduction, stability, controller reduction, Lyapunov equation
09/2007 | at – Automatisierungstechnik, Oldenbourg WissenschaftsverlagNetwork Efficiency of Stable Overlay Streaming Topologies
In order to distribute multimedia content in peer-to-peer based approaches, all participants choose other peers as neighbors, thus spanning an overlay network of logical nodes and connecting edges...
Keywords: Multimedia, P2P, sabotage-resistency, network efficiency, stability
05/2007 | it – Information Technology (vormals it+ti), Oldenbourg WissenschaftsverlagUnderstanding the weakly bonded constituents in oxysalt minerals
The crystal structure of a mineral may be divided into two parts: (1) the structural unit, an array of high-bond-valence polyhedra that is usually anionic in character, and (2) the interstitial complex, an array of large low-valence cations, simple anions and (H2O) groups that is usually cationic in character...
Keywords: Oxysalt minerals, Bond valence, stability, Mineral composition
01/2008 | Zeitschrift für Kristallographie, Oldenbourg WissenschaftsverlagContribution of the C30/C75 disulfide bond to the biological properties of onconase
Onconase, a member of the pancreatic type ribonuclease family, is currently used as a chemotherapeutic agent for the treatment of different types of cancer...
Keywords: catalytic activity, cytotoxicity, ribonuclease inhibitor evasion, site-directed mutagenesis, stability
08/2008 | Biological Chemistry, Walter de GruyterInverse problem with unknown composite external action for hyperbolic equations
In the present paper, the inverse problem with unknown composite right-hand side for second-order linear hyperbolic equations is examined...
Keywords: Hyperbolic equation, unknown external action, inverse problem, regular solution, existence, uniqueness, stability
01/2008 | Journal of Inverse and Ill-posed Problems, Walter de GruyterOpen issues of stability for the inverse conductivity problem
We review the state of the art and the current open problems regarding the stability of the inverse boundary value problem of Caldern, also known as the inverse conductivity problem or EIT.
Keywords: Inverse conductivity problem, EIT, stability
11/2007 | Journal of Inverse and Ill-posed Problems, Walter de GruyterAre changes in blood-ethanol concentration during storage analytically significant? Importance of method imprecision
Keywords: alcohol, analysis, Blood, Ethanol, gas chromatography, precision, stability, statistics, storage
10/2007 | Clinical Chemical Laboratory Medicine, Walter de GruyterType B natriuretic peptide stability in frozen plasma
No available
Keywords: Plasma, stability, type B natriuretic peptide (BNP)
09/2007 | Clinical Chemical Laboratory Medicine, Walter de Gruyter