Materials Literature
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The progress in field of nanocomposites formation is varied and covers different areas. Nanocomposites can be made from nanomaterials with an intention to enhance physical, thermal and other unique properties. Concomitant formed nanocomposites have properties that are superior to conventional micro scale composites an…
The silver nanoparticles (AgNPs) (as a model for other metals) is of utmost significance in various applied medical sciences. The chemical synthesis of Nan particles of metals particularly Ag-NPs is reported to be harmful when used in medical preparations. So, the silver nanoparticles were synthesized biologically usi…
The expanding field of nanotechnology is now one of the most promising areas of science. However, because some nanoparticles can have a negative impact on human health and the environment, the design of novel materials must always be accompanied by a comprehensive risk assessment. Until now, the information on the met…
Synergistic flame retardant mixtures were successfully tested as halogen-free flame retardants in two prepreg epoxies relevant in printed wired boards (PWB). The first epoxy system is composed of epoxy-novolac DOW DEN 438®, dicyandiamide (DICY) as hardener and fenurone as accelerator. The second one is based on the di…
Article Sustainability of Mass-Deacidification. Part II: Evaluation of Alkaline Reserve was published on March 1, 2012 in the journal Restaurator. International Journal for the Preservation of Library and Archival Material (volume 33, issue 1).
In recent years, bionanocomposites, where biopolymers are formulated with fillers with nanometric dimensions, have raised great research interest because of the increasing demand for environmentally friendly products. Owing to the nanometer-size dispersion of the filler particles, these composites, especially natural…
Glass Fibre Reinforced concrete (GFRC) is a recent introduction in the field of concrete technology. It has been extensively used in over 100 countries since its introduction in 1980ÂÂs. This product is covered by international standards and has been practiced all over the world. GFRC has advantage of being light wei…
meso-Tetrakis(4-methylpyridiniumil)porphyrin tetratosylate and its Co II complex are not associated in acidic and alkaline aqueous solutions ( = 3.5 -7.9). Catalytic activity of cobalt complex in the reaction of sodium diethyldithiocarbamate oxidation was studied.
In an effort to provide an affordable firewood alternative to the rural households in Nigeria, a study was carried out to compare some properties of bio briquettes (elephant grass and spear grass) and biocoal briquettes prepared at moderate pressure, 5MPa and ambient temperature with wood samples. It was found that el…
The current state of research is surveyed. The revi ew covers the catalytic technologies, the importanc e of nanostructured materials, the methods of preparation and the chara cterization of these materials is discussed, and he re we take an example of iron nanomaterials for the preparation of nanost ructured material…
Zinc oxide has photocatalytic properties that make it both a physical UV blocker and an antibacterial agent, thereby contributing to the widespread commercial use of ZnO particles for various dermatological and cosmetic applications. This photocatalytic activity is surface-area dependent: it increases with increasing…
This study reports an improvement of the stability of steam reforming catalysts at relatively low temperatures, such as for pre-reforming, and reforming of biomass derived compounds, by enhanced stabilization of Ni nanoparticles through spatial confinement in a mixed oxides matrix. We revealed a simple approach of thr…
Since the first heterotopic implantation of a biological heart valve in 1955 by Murray, bioprostheses have been steadily improved. For allografts different methods have been evaluated and modified to stabilize and preserve the available tissue. Xenografts were fixed to cross-link the connective tissue as well as preve…
Octahedral and decahedral Au@Ag core-shell nanocrystals have been prepared in high yields using a two-step reduction method. In the first step, octahedral or decahedral Au core seeds were prepared by reducing HAuCl4·4H2O in tetraethylene glycol (TEG) under microwave (MW) heating or in diethylene glycol (DEG) under oil…
Chemiluminescent acridinium dimethylphenyl ester labels are used in automated immunoassays for clinical diagnostics. Light emission from these labels is triggered by alkaline peroxide in the presence of the cationic surfactant cetyltrimethylammonium chloride (CTAC). The surfactant plays a critical role in the chemilum…
Detailed study of the BaB2O4–BaF2–BaO system resulted in the discovery of the new Ba7(BO3)4−xF2+3x solid solution belonging to the BaF2–Ba3(BO3)2 section. The distinguishing feature of the crystal structure of Ba7(BO3)4−xF2+3x phase is its extensive (BO3)3− ↔ 3F− anionic isomorphic substitution, confirmed by X-ray dif…
Graphene sheet is expected to be a highly efficient field emitter due to its unique electrical properties and open surface with sharp edges. However, it is still a tremendous technical challenge to grow and align a graphene sheet in one particular direction to protrude its sharp edges for good field emission. Here, we…
Quantum chemical screening reveals that 4H-dithieno[2,3-b:3',2'-e][1,4]thiazines possess the highest HOMO among four constitutional isomers, even 0.27 eV higher in energy than the well established 10H-phenothiazine. N-Substituted 4H-dithieno[2,3-b:3',2'-e][1,4]thiazines are readily accessible by twofold Pd-catalyzed a…
Recent advances in the study of network-forming materials are described for systems dominated both by ionic and covalent interatomic interactions. Modelling strategies are described which focus both on describing specific systems of interest and on modelling the systematic evolution of network topology. The effect of…
Nanoparticles of Ni carbide of about 50 nm in diameter were synthesized by the reduction of Ni salt in a polyol solution in the presence of polyvinylpyrrolidone (PVP). It was found that the aggregation of nanoparticles was suppressed when PVP was added to the polyol solution during synthesis. Diffraction peaks of the…