We report the synthesis and characterization of a novel carbon nanostructure-based magnetic resonance imaging contrast agent (MRI CA); graphene nanoplatelets intercalated with manganese (Mn(2+)) ions, functionalized with dextran (GNP-Dex); and the in vitro assessment of its essential preclinical physicochemical properties: osmolality, viscosity, partition coefficient, protein binding, thermosta...

The value of U.S. corporate equity in the first half of 2000 was close to 1.8 times U.S. gross national product (GNP). Some stockmarket analysts have argued that the market is overvalued at this level. We use a growth model with an explicit corporate sector and find that the market is correctly valued. In theory, the market value of equity plus debt liabilities should equal the value of product...

Polymer matrix composites reinforced with graphene derivatives are receiving increasing attention in academia and industry. For future applications, however, the machinability of these materials needs to be understood. This study introduces cutting mechanism nanoplatelet (GNP)-reinforced polymer using finite element (FE) method, where process is investigated terms stress distribution, chip form...

Graphene nanoplatelets (GNP) are used to produce wood plastic composites (WPC) with improved electrical and thermal conductivity. The polypropylene/wood/GNP hybrid produced by melt compounding followed hot pressing. effect of GNP loadings (5, 10 15 wt%) on conductivity, tensile properties, degradation WPC containing 20 wt% flour is studied. fast slow cooling rates during pressing the surface re...

Abstract Pristine carbon nanotubes (CNTs) and functionalized (f-CNTs) were introduced into conductive poly(methyl methacrylate)/graphene nanoplatelet (PMMA/GNP) composites to achieve a synergistic effect in the enhancement of conductivity reduction percolation threshold by forming 3-Dimensional(3-D) hybrid structure. Both in-plane perpendicular electrical properties investigated. The synergies ...

The tribological behaviour of diamond-like carbon (DLC) and graphene nanoplatelets (GNP) nanocomposite has not been previously explored in a lubricated environment, with some previous studies reporting only on materials the surface DLC. In this study DLC-GNP films various GNP coverages were synthesised by 3 step process: spin coating suspension, heat treatment, DLC deposition. study, effect cov...

During development, Sonic hedgehog (Shh) regulates the proliferation of cerebellar granule neuron precursors (GNPs) in part via expression of Nmyc. We present evidence supporting a novel role for the Mad family member Mad3 in the Shh pathway to regulate Nmyc expression and GNP proliferation. Mad3 mRNA is transiently expressed in GNPs during proliferation. Cultured GNPs express Mad3 in response ...

Homogeneous dispersion of graphene into thermoplastic polymer matrices during melt-mixing is still challenging due to its agglomeration and weak interfacial interactions with the selected matrix. In this study, an ideal within PA66 matrix was achieved under high shear rates by thermokinetic mixing. The flow direction monitored developed numerical methodology a combination rheological behaviors....

In this study, polyurethane (PU) was modified by direct mixing of carboxyl functionalised graphene (GNP–COOH) referred to as f-GNP, without using any solvent, during in-situ polymerization. a further attempt, the neat PU with f-GNP and hydrophobic silica-based solution (SG) The damping coefficient attenuation capacity (PU), based nanocomposite (PU + f-GNP), SG), together polytetrafluoroethylene...