Results 31 to 40 of about 290,262 (199)
Advanced Engineering Materials, EarlyView.High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé +5 more
wiley +1 more source
On the Exact Form of V.A. Dykhta’s Feedback Minimum Principle in Nonlinear Control Problems
Известия Иркутского государственного университета: Серия "Математика"This paper investigates a nonlinear optimal control problem for an ordinary differential equation (in the sense of Bochner) on a Banach space. The problem is posed in the class of conventional controls – measurable, essentially bounded functions of time –
N. I. Pogodaev +2 more
doaj +1 more source
Robustness analysis and synthesis for uncertain nonlinear systems [PDF]
, 1994 The stability and performance robustness analysis for a class of uncertain nonlinear systems with bounded structured uncertainties are characterized in terms of various types of nonlinear matrix inequalities (NLMIs).
Doyle, John C., Lu, Wei-Min
core
Advanced Engineering Materials, EarlyView.A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer +3 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar +2 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller +6 more
wiley +1 more source
On the Koplienko spectral shift function, I. Basics [PDF]
, 2007 We study the Koplienko Spectral Shift Function (KoSSF), which is distinct from the one of Krein (KrSSF). KoSSF is defined for pairs $A,B$ with $(A-B)\in\calI_2$, the Hilbert-Schmidt operators, while KrSSF is defined for pairs $A,B$ with $(A-B)\in\calI_1$,
Gesztesy, Fritz +2 more
core +3 more sources
Areal Foliation and AVTD Behavior in T^2 Symmetric Spacetimes with Positive Cosmological Constant
, 2007 We prove a global foliation result, using areal time, for T^2 symmetric spacetimes with a positive cosmological constant. We then find a class of solutions that exhibit AVTD behavior near the singularity.Comment: 15 pages, 0 figures, 2 references ...
Adam Clausen +2 more
core +1 more source
Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source
Existence of positive bounded solutions for nonlinear elliptic systems
Electronic Journal of Differential Equations, 2013 In this article, we study a class of nonlinear elliptic systems in regular domains of $mathbb{R}^n(ngeq 3)$ with compact boundary. More precisely, we prove the existence of bounded positive continuous solutions to the system $Delta u=lambda f(.,u,v)$,
Faten Toumi
doaj