The effect of grapheme-nanosheets (GNs) on the mechanical properties and microstructure S390 HSS alloy was investigating. sample reinforced with 0.25, 0.5, 0.75 wt.% GNS. Powder metallurgy technique used to prepare all samples. elemental powders were milled in a planetary ball mill by 10:1 powder ratio speed 350 rpm for 48 hours, mixed warm compacted uni-axial press at 550?C under 500 MPa then ...

In this work, nanocomposite membranes based on graphene and polylactide were evaluated for mechanical properties biocompatibility. Single-layer (SLG), nanosheets (GNS), poly L-lactic acid (PLLA) prepared through layer-by-layer deposition homogeneous mixing. The results revealed that PLLA/SLG nanocomposites PLLA/GNS could show enhanced addition of a tiny amount SLG significantly improved Young’s...

Hexamethyldisiloxane (HMDSO)/Graphene nanosheets (GNs) nanocomposite coatings were deposited by a dielectric barrier discharge at atmospheric pressure. Commercially available GNs incorporated into HMDSO precursor different concentrations up to 2 wt%. The analyzed using scanning electron microscopy (SEM) and nanoindentation test. Based on SEM images, it was found that the well distributed disper...

BACKGROUND Smad2 and Smad3 are transcription factors that mediate transforming growth factor beta (TGF-beta) signals. Upon their activation, phosphorylated Smad2/Smad3 (pSmad2/Smad3), translocate to the nucleus and associate with co-activators such as p300, regulating the transcription of genes that contribute to the fibrotic processes. METHODS We investigated the immunohistochemical expressi...

Low-cost, high-yield production of graphene nanosheets (GNs) is essential for practical applications. We have achieved high yield of edge-selectively carboxylated graphite (ECG) by a simple ball milling of pristine graphite in the presence of dry ice. The resultant ECG is highly dispersable in various solvents to self-exfoliate into single- and few-layer (≤ 5 layers) GNs. These stable ECG (or G...

Gold nanoshells (GNS) are novel metal nanoparticles exhibiting attractive optical properties which make them highly suitable for biophotonics applications. We present a novel investigation using plasmon-enhanced four wave mixing microscopy combined with coherent anti-Stokes Raman scattering (CARS) microscopy to visualize the distribution of 75 nm radius GNS within live cells. During a laser tol...

Highly photosensitive nanocrystal (NC) skins based on exciton funneling are proposed and demonstrated using a graded bandgap profile across which no external bias is applied in operation for light-sensing. Four types of gradient NC skin devices (GNS) made of NC monolayers of distinct sizes with photovoltage readout are fabricated and comparatively studied. In all structures, polyelectrolyte pol...

We reported a simple and effective way of fabricating one-dimensional (1D) graphene oxide nanoscrolls (GONS) from graphene oxide (GO) sheets through shock cooling by liquid nitrogen. The corresponding mechanism of rolling was proposed. One possibility is the formation of ice crystals during the shock cooling process in liquid nitrogen to be the driving force. The other might be due to the uneve...

This paper presents a discussion of the Generalized Network System (GNS), a system that captures knowledge about generalized network flow problems, in order to help users formulate, solve and interpret generalized network flow problems. Although previous researchers have built intelligent systems that incorporate knowledge about linear programming, this system includes more specific knowledge a...