Materials Literature
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The ultrafine aluminum powders with diameter of 1-2 μm were surface grafted by energetic glycidyl azide polymer (GAP) using diisocyanate as bridge via consecutive condensation reactions between —OH and —N＝C＝O groups. The surface properties, compatibility with fluorine polymeric binders as well as resistance to water o…
The main objectives of this research are to synthesize chitosan nanoparticles of chloroform fraction of K. rotunda, to characterize the products, and to conduct a biological test on these products as an antioxidant. Chloroform fraction of K. rotunda was loaded on chitosan nanoparticles and then was prepared by ionic g…
Super capacitor is now widely used in the field of design and daily life. Super capacitor is different from the normal battery, it occupyies the seat as an important role in creasing in energy storage area due to its own advantages. The principle and applications of the super capacitor were described in this article,…
We study the optical properties of hybrid gold nanodisk and nanohole arrays and present experimental evidence of nanoparticle trapping using these devices. The fabrication procedure using electron beam lithography (EBL) is also discussed. This hybrid design exhibits a splitting of the resonance modes (low and high ene…
Glasses with the composition xNa2O-15ZnO-20Bi2O3-(64-x) X-ray diffraction studies are carried out, effect on glass transition temperature (Tg ) were carried out using differential scanning calorimetry (DSC) thermograms, and from Archimedes principle, the density of the samples were estimated. Molar volume was calculat…
The quasi-prepolymers were synthesized by using the prepolymerization method with polyethylene glycol (PEG) 1500 and polymeric 4,4-diphenylmethano diisocyanate (pMDI) in different molar ratios. The monomers and prepolymers were characterized by means of FTIR, 1 H-NMR and 13 C-NMR. It was possible to demonstrate that b…
LED lighting systems with large color gamuts, with multiple LEDs spanning the visible spectrum, offer the potential of increased lighting efficiency, improved human health and productivity, and visible light communications addressing the explosive growth in wireless communications. The control of this "smart lighting…
The survival protein SurE from Salmonella typhimurium (StSurE) is a dimeric protein that functions as a phosphatase. SurE dimers are formed by the swapping of a loop with a pair of β-strands and a C-terminal helix between two protomers. In a previous study, the Asp230 and His234 residues were mutated to Ala to abolish…
Toxicants can perturb cellular homeostasis by modifying phosphorylation-based signaling. In the present study, we examined the effects of cerulein, an inducer of acute pancreatitis, on keratin 8 (K8) phosphorylation. We found that cerulein dose-dependently induced K8 phosphorylation and perinuclear reorganization in P…
ABSTRACT Conductive hydrogel nanocomposites containing graphite, graphene oxide (GO), and graphene particles were synthesized by free radical polymerization in aqueous solution. The effect of cross‐linker, initiator, graphite, GO, and graphene concentrations on water absorbency and electrical conductivity of hydrogels…
Abstract This study explored how periodic cathodic polarization of commercially pure titanium (cpTi) alters its electrochemical properties and biocompatibility. MC3T3‐E1 preosteoblast cells were cultured directly on cpTi samples and maintained at open circuit potential (OCP) for 24 h followed by an additional 24‐h seq…
Nanosize hematite (α-Fe2O3) particles were synthesized by the Sol-gel method and were used for preparing polystyrene@α-Fe2O3 (PS@α-Fe2O3) nanocomposites via microemulsion polymerization by using ammonium proxidisulfate (APS) as an initiator. The obtained nanocomposites were characterized by scanning electron microscop…
We present a theoretical study on the efficiency of non-radiative recombination channels in optically excited graphene on a substrate. We find that depending on the strength of the excitation pulse and the dielectric constant of the applied substrate, either Auger or phonon-induced recombination prevails. The favorabl…
The dynamics of regular clusters of many nontouching particles falling under gravity in a viscous fluid at low Reynolds number are analyzed within the point-particle model. The evolution of two families of particle configurations is determined: two or four regular horizontal polygons (called "rings") centered above or…
We treat the light-matter interaction due to radiation pressure in one dimension using the fundamental, nonrelativistic conservation principles of energy and momentum. Additionally, we assume that the center of mass-energy maintains the same uniform motion if the interaction takes place or not. Since we handle solids…
The number of HVDC submarine cable connections is increasing around the world. In these applications, electrodes design is paramount for technical and economic feasibility. Cathode's design is kept as simple as possible, if bidirectional operation is not required, since reduction reactions do not produce corrosion of…
A series of mononuclear five-coordinate cobalt(II) complexes, [Co(dbdmp)(X)]Y, where dbdmp = N,N-diethyl-N′,N′-bis((3,5-dimethyl-1H-pyrazol-1-yl)methyl)ethane-1,2-diamine, X = /NCO−/NCS− and Y = //, have been synthesized and characterized by microanalyses and spectroscopic techniques. Crystal structures of [Co(N3)(dbd…
Protein complexes play pivotal roles in cellular life. Nevertheless, their characterization remains a substantial challenge. Mass spectrometry (MS) is an emerging tool to study protein assemblies, and electrospray ionization (ESI) is often used because it preserves non-covalent interactions. Matrix-assisted laser deso…
A new method for the synthesis of the monomethine group using nitro as a leaving group in an SN-Ar reaction is described. A series of novel merocyanine dyes has been synthesised and their photophysical properties have been elucidated. The longest wavelength absorption occurs in the range 519–619 nm and the molar absor…
A resistivity model for non-crystalline, solid-density carbon and hydrocarbons is presented for such materials heated by short-pulse, ultra-intense lasers. Electron-impact excitation of C atoms and ions was included in this model, and calculation of resistivity curves with and without accounting for excitations indica…