Results 31 to 40 of about 41,044,774 (341)

Semientwining Structures and Their Applications [PDF]

open access: yes, 2012
Semientwining structures are proposed as concepts simpler than entwining structures, yet they are shown to have interesting applications in constructing intertwining operators and braided algebras, lifting functors, finding solutions for Yang-Baxter ...
Nichita, Florin F.   +2 more
core   +5 more sources

Automated, Quality Assured and High Volume Oriented Production of Fiber Metal Laminates (FML) for the Next Generation of Passenger Aircraft Fuselage Shells

open access: yesScience and Engineering of Composite Materials, 2019
The use of fiber-metal laminates (FML) allows for substantial advantages over a fuselage skin made of monolithic aluminum materials. Glass fiber prepreg reinforced aluminium is characterized by high damage tolerance capabilities, supporting the ...
Ucan Hakan   +14 more
doaj   +1 more source

Alternative Structures and Bihamiltonian Systems

open access: yes, 2002
In the study of bi-Hamiltonian systems (both classical and quantum) one starts with a given dynamics and looks for all alternative Hamiltonian descriptions it admits.In this paper we start with two compatible Hermitian structures (the quantum analog of ...
Marmo, G.   +3 more
core   +1 more source

Educing coherent eddy structures in air curtain systems [PDF]

open access: yes, 2008
The work reported here comes within a broader research program dealing with ambiance separation or confining by means of air curtains (plane air jets). The process is studied experimentally by Particle Image Velocimetry (PIV).
Beaubert   +25 more
core   +2 more sources

A controlled recipient evacuation process to form composite profiles from flat multi-angle prepreg stacks – infrastructure and C-profile verification

open access: yesAdvanced Manufacturing: Polymer & Composites Science, 2019
Single-diaphragm forming is a cost saving alternative to labor-intensive ply-by-ply layup. This paper reports on forming of flat uncured multi-angle prepreg stacks into C shape.
E. Kappel, M. Albrecht
doaj   +1 more source

Miscible Organic Solvents Soak Bonding Method Use in a PMMA Multilayer Microfluidic Device

open access: yesMicromachines, 2014
In this paper, we proposed a novel bonding technology to fabricate a microfluidic device based on Poly(methyl methacrylate) (PMMA). The method, which used chloroform and ethanol as miscible bonding solvent, can complete complex structures rapid assembly (
He Zhang   +3 more
doaj   +1 more source

Generalized Hamiltonian structures for Ermakov systems

open access: yes, 2002
We construct Poisson structures for Ermakov systems, using the Ermakov invariant as the Hamiltonian. Two classes of Poisson structures are obtained, one of them degenerate, in which case we derive the Casimir functions.
Athorne C   +19 more
core   +2 more sources

Stable classical structures in dissipative quantum chaotic systems [PDF]

open access: yes, 2009
We study the stability of classical structures in chaotic systems when a dissipative quantum evolution takes place. We consider a paradigmatic model, the quantum baker map in contact with a heat bath at finite temperature.
Alejandro M. F. Rivas   +6 more
core   +1 more source

RNASAlign: RNA Structural Alignment System [PDF]

open access: yesBioinformatics, 2011
Abstract Motivation: Structural alignment of RNA is found to be a useful computational technique for idenitfying non-coding RNAs (ncRNAs). However, existing tools do not handle structures with pseudoknots. Although algorithms exist that can handle structural alignment for different types of pseudoknots, no software tools are available ...
Wan, KL   +6 more
openaire   +4 more sources

Geometrical structures of multipartite quantum systems

open access: yes, 2011
In this paper I will investigate geometrical structures of multipartite quantum systems based on complex projective varieties. These varieties are important in characterization of quantum entangled states.
Heydari, Hoshang
core   +1 more source

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