Materials Literature
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A facile method to deposit continuous Au shells on Fe3O4 colloidal superparticles was developed by introducing Tween-20 as a surface modification agent to maintain the colloidal stability of the Fe3O4 superparticles and provide nucleation and growth sites for the Au shells. The Fe3O4–Au core–shell particles showed exc…
Finite Element Modeling for Cathodic Protection of Pipelines under Simulating Thermocline Environment in Deep Water Using a Dynamic Boundary Condition, Li, Chengjie, Du, Min, Sun, Jixing, Li, Yan, Liu, Fuguo
Three ethanedithiol-linked bisquinoline derivatives with a different number of methoxy substituents on the aromatic ring exhibit a significant fluorescent response toward mercury(II) and iron(III) ions. Fluorescence enhancement (OFF–ON), ratiometric and fluorescence quenching (ON–OFF) responses were achieved with the…
Superabsorbent hydrogels based on poly (acrylamide-co-acrylate) and different kaolins, were prepared by free-radical aqueous copolymerization. FTIR and WAXS techniques were employed for characterization of a series of hydrogels, obtained by varying the percentage of clay, crosslinking and constitution of kaolin. The w…
A facile method was established to fabricate uniform nanogaps between a Au core and a Au-Ag alloy shell. The size of nanogaps is controllable due to fast dissolution of AgCl and AgBr in CTAB and the crystal growth of the shell on a designed template. These Au-Ag core-shell nanoparticles with uniform sub-2.5 nm interio…
In this paper the processing of a fiber reinforced plastic consisting of glass fibers embedded in polypropylene with ultra short laser systems is shown. Focus of the study is on the dependence of working wavelength (1064 nm, 532 nm and 355 nm) and pulse duration (500 fs to 10 ps) on the laser ablation characteristic o…
A thin film giant magneto impedance (GMI) based on magnetic field sensor has been developed using electrodeposited Ni-Fe permalloy. Chemical composition, surface morphology, and magnetic properties of Ni-Fe permalloy were char-acterized as a function of plateup parameters, and process conditions were established to de…
Exposure of mammalian cells to oxidative stress can result in DNA damage that adversely affects many cell processes. We used bulk electrolysis in an electrochemical system and capillary electrophoresis (CE) to control and measure the effect of oxidative stress on DNA. Calf thymus DNA and a fluorescently labeled DNA si…
Pitting is a form of extremely localized attack that results in holes in the metal. It is one of the most destructive and insidious forms of corrosion. It causes equipment to fail because of perforation with only a small percent weight loss of the entire structure. In this study, effects of plasma transferred arc weld…
Water-soluble fluorescent Ag nanoclusters (NCs) were prepared with the assistance of commercially available polyinosinic acid (PI) as a template, which can be greatly quenched by trace biological thiols such as cysteine (Cys), homocysteine (Hcy), and glutathione (GSH). The developed PI–Ag NCs were used for highly sens…
Four actinomycete strains previously isolated from Brazilian soils were tested for their antimicrobial activity against Bacillus pumilus LF-4 and Desulfovibrio alaskensis NCIMB 13491, bacteria that are well known to be involved in biofilm formation and biocorrosion. Strain 235, belonging to the species Streptomyces lu…
A nanoslit is capable of performing versatile functions in nanophotonic applications. In this invited paper, we discuss the physics and manipulation methods of surface plasmon excitation such as directional switching at a nanoslit. Furthermore, enhancing the light intensity passing through a nanoslit by employing embe…
Poly(ethylene glycol)-poly(L-glutamine) (PEG-PLGA) copolymer EA-G2 (or EA-G1) was prepared by aminolysis of poly(ethylene glycol)-poly(L-benzyl glutamate) (PEG-PBLG) using PAMAM G2 (or G1). The chemical structure of PEG-PLGA was confirmed by FT-IR, 1H-NMR, DSC and GPC. The performances of the EA-G2 (or EA-G1) were ass…
Controlled in situ synthesis of surface functionalized BaSO4 nanoparticles is achieved by using a difunctional molecule to modulate the growth of nanoparticles coupled with in situ generation of SO42− under mild conditions. Such BaSO4 nanoparticles with surface vinyl groups reinforce the PMMA bone cement better than c…
Electrochemical behavior of nickel chloride was investigated in aqueous and reverse micellar solutions of a cationic surfactant, cetyltrimethylammonium bromide (CTAB) on glassy carbon (GC) and copper electrodes by cyclic voltammetric measurements. The electrochemical reduction of nickel ion to metallic nickel has been…
, pbi = 2-(2-pyridyl)-benzimidazole, was synthesized to mimic copper zinc superoxide dismutase (CuZnSOD). CZpbi was then encapsulated onto a dye (fluorescein isothiocyanate, FITC) functionalized mesoporous silica nanoparticles (MSN) where MSN serves as a nanofactory platform for delivering the catalytic action of the…
Magnetic C-isolated Ag-C-Co sandwich sphere nanostructures have been fabricated through a synchronous growth and assembly process, in which the outer Co sphere-shells assemble around the surface of synchronously grown Ag-C sphere-cores. Raman and UV-vis absorption spectroscopy studies show that the covering of Co shel…
This paper proposes a new method for estimating the induction motor single-cage model parameters from the manufacturer data. A multidimensional single-objective nonlinear optimization problem is formulated to minimize the deviation between the values of the performance characteristics provided by the manufacturer and…
In this work we present an extensive time of flight neutron diffraction (ToF-ND) study on some Japanese armour components. The experiments were carried out at the INES diffractometer at ISIS, the pulsed neutron source in the UK. In particular, we have studied seven Japanese helmets (kabuto) made between the 16th and 1…
Coir pith, a byproduct of coconut husk is difficult to decompose due to its high lignin and cellulose content. In this study, coir pith was composted with different agro industrial by products such as cow dung, vegetable market waste, poultry waste and microbial consortium. The different treatment combinations used in…