Materials Literature
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Purpose of review: This review focuses on the practical use of natural antimicrobial agents incorporated in active packaging delivery systems to preserve the quality of fresh fruits and vegetables. Main findings: Considerable postharvest losses of fresh fruits and vegetables are caused by microbial plant pathogens. As…
Nanostructured cobalt oxide ͑Co 3 O 4 ͒ electrodes were prepared by two different methods.The first one involved the synthesis of Co 3 O 4 nanoparticles through a nanocasting route using commercial silica gel as a sacrificial template, and in the second one, the Co 3 O 4 electrodes were prepared by thermal decompositi…
Duplex stainless steels (DSS) as alternatives to conventional austenitic stainless steels for the construction of pipelines is becoming more wide-spread, particularly for sour service applications where corrosion resistance / stress corrosion cracking resistance is required in aggressive chloride / sulphide environmen…
This paper presents a new and accurate Current Transformer (CT) model for the analysis of electromagnetic transients, based on representation of core magnetization characteristics using the Preisach Theory. Unlike the existing CT models, the proposed model determines shapes of hysteresis minor loops independent of the…
Ultraviolet-assisted curing (UV curing) has been applied recently to enhance the mechanical properties of low- films. Knowledge about which UV energies are most effective is still limited and the consequences of applying the UV-curing process to integrated stacks in on-chip interconnects are unknown. To clarify these…
Generating polymers in the presence of a self-assembling gelator with terminal double bonds yields polymeric materials with embedded reactive nano-skeletons-subsequent washing gives nanoscale imprinted materials with fibrillar architectures.
The synthesis is reported of a series of metalloporphyrins (and the corresponding free-base porphyrin), mono-meso-substituted with a bipyridyl group via an amide link at the 4-position of one phenyl group: [Re(CO)(3)(Pic)Bpy-MTPP][OTf], where M = Mg, Zn, Pd or 2H, Pic = 3-picoline, Bpy = 2,2'-bipyridine, TPP = tetraph…
Silica nanowires are one-dimensional nanomaterials that are being developed for use in biological systems. Unfortunately, little is known regarding the cytotoxic potential of this type of nanomaterial. Here, using two different human epithelial cell lines we have examined the cytotoxicity of silica nanowires over a br…
Porous silicon (PS) samples were obtained by anodization etching process of n-type silicon wafer phosphorus-doped. Electrochemical oxidation of PS was investigated in aqueous hydrofluoric acid (HF) containing additive such as ethanol or acetonitrile. Pore formation was studied with the variation of type and resistivit…
A new method for the synthesis of biocompatible and multifunctional semiconductor ZnO quantum dots (QDs) through reaction of oleate-capped ZnO QDs with a poly(ethylene glycol)-siloxane is reported. The size, shape, crystal structure and the optical properties of water-soluble ZnO QDs were characterized by atomic force…
Azobenzene derivatives can be used to reversibly photo-regulate conformation and activity when introduced as intramolecular bridges in peptides and proteins. Here we report the design, synthesis, and characterization of an azobenzene derivative that absorbs between 400-450 nm in aqueous solution to produce the cis iso…
SCK nanoparticles having differing core thermal characteristics were designed and evaluated as thermoresponsive drug delivery systems of doxorubicin for the killing of cancerous cells.
The different complexation methods of a proton transfer compound, (creatH)(pydcH)·H 2 O (pydcH 2 = pyridine-2,6-dicarboxylic acid; creat = creatinine) with metal ions have been studied and formation of [(Tl(pydcH)] n (1), [(Fe(pydc)(H20)2)20x]·6H 2 O (2), [Cu(pydc)(pydcH 2 )]·2H 2 O (3) and (creatH)2[Bi(pydc)2]2'4H20…
The solvated yttrium iodide precursors [Y(L)(8)]I(3) (L = DMSO or DMF), prepared in situ by stirring YI(3)(Pr(i)OH)(4) in DMSO or DMF, react with CuI in the presence of NH(4)I to give ionic hetero-metallic species [Y(DMSO)(8)][Cu(2)(mu-I)I(4)] (1) and [Y(DMF)(8)][Cu(4)(mu(3)-I)(2)(mu-I)(3)I(2)] (2) in excellent yields…
The influence of hydrocarbon-containing fuel gases on cell performance and coke formation is investigated in this work, wherein acetylene is applied as a model compound for the coke formation. The dependence of coke yield on acetylene amount (volume fraction of 0.05–0.50%) and gas composition is analyzed. Further para…
Partial discharge (PD) is an important indicator of insulation condition in a power transformer. The PD phenomenon is exhibited in various observable forms such as electrical, mechanical, optical and electromagnetic energy. Many modern systems use a combination of these techniques, because electrical detection is a pr…
The anterior cruciate ligament (ACL) is important for knee stability and kinematics. Unfortunately, it is also the most commonly injured ligament of the knee and due to its poor healing potential, severe damage warrants surgical intervention including complete replacement. Current ACL replacements have a host of limit…
This work devotes to investigate synthesis and electrical properties of spinel MgCo2O4 that is considered as a candidate of the cathode materials of magnesium-ion batteries in future. Samples were synthesized by two types of techniques: solid-state reaction and wet process. The crystal structures of the samples were a…
Mesoporous SiO2/Ni3Si2O5(OH)4 core-shell microspheres with tunable chamber structures have been synthesized by the reaction between Ni(Ac)2.4H2O and SiO2 microspheres via a simple self-template approach.
Blends formed by electrochemical polymerization of polypyrrole (PPy) into polyacrylamide (PAAm) hydrogels were used as devices for controlled drug release. The influence of several parameters in the synthesis, such as type of hydrogel matrix and polymerization conditions was studied by using a fractional factorial des…