Results 41 to 50 of about 216,833 (321)

Physical, Thermal, and Mechanical Characterization of PMMA Foils Fabricated by Solution Casting

open access: yesApplied Sciences, 2023
The physical, thermal, structural, and mechanical properties of poly(methyl methacrylate) PMMA foils cast from solutions of toluene were investigated by differential scanning calorimetry, optical microscope, Fourier infrared spectroscopy, and dynamical ...
Sneha Samal   +5 more
doaj   +1 more source

Descent modulus and applications [PDF]

open access: yesJournal of Functional Analysis
The norm of the gradient $\nabla$f (x) measures the maximum descent of a real-valued smooth function f at x. For (nonsmooth) convex functions, this is expressed by the distance dist(0, $\partial$f (x)) of the subdifferential to the origin, while for general real-valued functions defined on metric spaces by the notion of metric slope |$\nabla$f |(x). In
Aris Daniilidis   +2 more
openaire   +3 more sources

Enhancing the Out-of-Plane Compressive Performance of Lightweight Polymer Foam Core Sandwiches

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021
This study investigates the flatwise compressive performance of the developed sandwiches with core stitching modification. Polyvinyl chloride (PVC) foam cores with a density of 0.048 g/cm3 were stitched with 600-tex glass fiber yarns.
Çağrı Uzay
doaj   +1 more source

Modulus stabilization in the multiple-modulus framework

open access: yesPhysical Review D
In a class of modular-invariant models with multiple moduli fields, the viable lepton flavor mixing pattern can be realized if the values of moduli are selected to be at the fixed points. In this paper, we investigate a modulus stabilization mechanism in the multiple-modulus framework which is capable of providing de Sitter (dS) minima precisely at the
Stephen F. King, Xin Wang
openaire   +2 more sources

Exploitation of static and dynamic methods for the analysis of the mechanical nanoproperties of polymethylmetacrylate by indentation

open access: yesFracture and Structural Integrity, 2021
Elaborating an instrumented nanoindentation is to exercise non-destructive tests to be applied to volumes of polymethylmetacrylate (PMMA) materials in miniature. This work focuses on factors that explain the trends variation of mechanical properties like
Benaissa Soufiane   +6 more
doaj   +1 more source

Elastic Bending Modulus for Single-Layer Black Phosphorus [PDF]

open access: yes, 2014
We derive an analytic formula for the elastic bending modulus of single-layer black phosphorus (SLBP) based on the valence force field model. The obtained elastic bending modulus is 4.8028 eV and 7.9905 eV along the armchair and zigzag directions in the SLBP, respectively. These values are obviously larger than the bending modulus of 1.4 eV in graphene
arxiv   +1 more source

The theory and art of corneal cross-linking

open access: yesIndian Journal of Ophthalmology, 2013
Before the discovery of corneal cross-linking (CXL), patients with keratoconus would have had to undergo corneal transplantation, or wear rigid gas permeable lenses (RGPs) that would temporarily flatten the cone, thereby improving the vision.
Rebecca McQuaid   +2 more
doaj   +1 more source

Elastic Bending Modulus of Single-Layer Molybdenum Disulphide (MoS2): Finite Thickness Effect [PDF]

open access: yesNanotechnology 24, 435705 (2013), 2013
We derive, from an empirical interaction potential, an analytic formula for the elastic bending modulus of single-layer MoS2 (SLMoS2). By using this approach, we do not need to define or estimate a thickness value for SLMoS2, which is important due to the substantial controversy in defining this value for two-dimensional or ultrathin nanostructures ...
arxiv   +1 more source

Generalized reduced modulus in Euclidean space [PDF]

open access: yesarXiv, 2023
In Euclidean space condensers with variable potential levels and the presence of a free part at the boundary are studied. The asymptotic formula of the modulus of such condenser is obtained when the plates are pulled into points. The generalized reduced modulus is defined as the second term of this asymptotics.
arxiv  

Matrigel inhibits elongation and drives endoderm differentiation in aggregates of mouse embryonic stem cells

open access: yesFEBS Open Bio, EarlyView.
Stem cell‐based embryo models (SCBEMs) are valuable to study early developmental milestones. Matrigel, a basement membrane matrix, is a critical substrate used in various SCBEM protocols, but its role in driving stem cell lineage commitment is not clearly defined.
Atoosa Amel   +3 more
wiley   +1 more source

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