Results 61 to 70 of about 1,549,267 (194)
A Converse Sum of Squares Lyapunov Result With a Degree Bound [PDF]
IEEE Transactions on Automatic Control, 2012 Sum of Squares programming has been used extensively over the past decade for the stability analysis of nonlinear systems but several questions remain unanswered. In this paper, we show that exponential stability of a polynomial vector field on a bounded set implies the existence of a Lyapunov function which is a sum-of-squares of polynomials.
Peet, M, Papachristodoulou, A
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Degree of Conversion of Self-etch Adhesives: In Situ Micro-Raman Analysis [PDF]
Operative Dentistry, 2016 SUMMARY Purpose: Degree of conversion (DC) affects the physicochemical properties of dental adhesives. The aim of this study was to measure the DC within the hybrid layer of four one-step self-etch adhesives using Raman microspectroscopy. The hypothesis tested was that there was no difference among the tested adhesives.
Navarra, C. O. +5 more
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Multi-path entanglement of two photons
, 2009 We present a novel optical device based on an integrated system of micro-lenses and single mode optical fibers. It allows to collect and direct into many modes two photons generated by spontaneous parametric down conversion.
Alessandro Rossi +5 more
core +1 more source
Optomechanical creation of magnetic fields for photons on a lattice [PDF]
, 2015 We propose using the optomechanical interaction to create artificial magnetic fields for photons on a lattice. The ingredients required are an optomechanical crystal, i.e.
Keßler, S. +4 more
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Effect of Storage Time on the Degree of Conversion of Light Cured Dental Materials [PDF]
Al-Rafidain Dental Journal, 2012 The aim of this study was to investigate the effect of storage time (immediately after polymerization and after one month of artificial saliva storage) on the degree of conversion (DC) of restorative type of light cured dental materials.
Sabah A Ismail +2 more
doaj +1 more source
Glass transition and degree of conversion of a light-cured orthodontic composite [PDF]
Journal of Applied Oral Science, 2009 This study evaluated the glass transition temperature (Tg) and degree of conversion (DC) of a light-cured (Fill Magic) versus a chemically cured (Concise) orthodontic composite.Anelastic relaxation spectroscopy was used for the first time to determine the Tg of a dental composite, while the DC was evaluated by infrared spectroscopy.
Sostena, Michela M.D.S. +3 more
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Degree of Conversion and Oxygen-Inhibited Layer Effect of Three Dental Adhesives
Dentistry Journal, 2016 This study investigated the effect of the oxygen-inhibited layer on the degree of conversion (DC) of three dental adhesives, comparing two different protocols.
Lindsay Robertson +4 more
doaj +1 more source
Degree of Conversion of Dual-Cured Composite Luting Cements
Dental Materials Journal, 1991 The degree of conversion (DC) of dual-cured composite luting materials for composite inlay restoration was determined by Fourier transform infrared spectroscopy. Dual-cured composite cements showed a DC of 59.3-75.0% after self-cure and 66.6-81.4% after photo-cure.
Ikuro HARASHIMA +2 more
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, 2017 Multi-degree splines are piecewise polynomial functions having sections of different degrees. For these splines, we discuss the construction of a B-spline basis by means of integral recurrence relations, extending the class of multi-degree splines that ...
Beccari, Carolina Vittoria +2 more
core +1 more source
Conversion degrees of resin composites using different light sources.
European journal of dentistry, 2013 The objective of this study was to compare the conversion degree of six different composite materials (Filtek Z 250, Filtek P60, Spectrum TPH, Pertac II, Clearfil AP-X, and Clearfil Photo Posterior) using three different light sources (blue light-emitting diode [LED], plasma arc curing [PAC], and conventional halogen lamp [QTH]).Composites were placed ...
Ozturk B. +3 more
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