Materials Literature
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Ibliform barnacles are among the few invertebrate animals harnessing calcium phosphate to construct hard tissue. The (31)P solid-state NMR (SSNMR) signal from the shell plates of Ibla cumingi (Iblidae) is broader than that of bone, and shifted by ca 1 ppm to low frequency. (1)H-(31)P heteronuclear correlation (HETCOR)…
Many types of colloids, including nanoemulsions, which contain sub-100 nm droplets, are dispersed in molecular and micellar solutions, especially surfactant solutions that confer stability. Since it would be desirable to measure the droplet volume fraction ϕ and surfactant concentration C of a nanoemulsion non-destruc…
We study a family of local boundary conditions for the Dirac problem corresponding to the continuum limit of graphene, both for nanoribbons and nanodots. We show that, among the members of such family, MIT bag boundary conditions are the ones which are in closest agreement with available experiments. For nanotubes of…
The hydroxyl radical and its reactivity within ice environments are crucial to many important atmospheric reactions. The associated molecular mechanisms are largely unknown due to challenges posed by direct experimental measurements and computational studies of this transient species. Here we report insights into the…
A mechanistic investigation into the photooxidation of alcohols using dye sensitised titanium dioxide and dye sensitised zinc oxide is described. The varying yields using the two photocatalysts have been explained using electron paramagnetic resonance (EPR) spectroscopy, which indicated that electron injection occurs…
AIMS: To study the effect of intravenous magnesium sulfate infusion on clinical outcome of patients of acute stroke. MATERIALS AND METHODS: Sixty consecutive cases of acute ischemic stroke hospitalised within 24 h of an episode of stroke were taken as subjects. All subjects underwent a computed tomography head, and th…
We studied the spreading of soluble surfactants on spatially confined thin liquid films by means of comprehensive experiments and numerical simulations. We determined the time evolution of the liquid film thickness both from interference microscopy measurements and finite element calculations. A characteristic rim dev…
Within the framework of the linear theory of elasticity, the analytical equations for the components of the stress tensor for plane with circular inclusion under tensile loading have been derived using the method of superposition. The given approach allows one to describe the plane-stress state of the plane both for t…
The aim of this work is to study the effect of corrosion on the buckling behaviour and resistance of corroded steel angle section members. The influences of the corrosion location and the loss of cross-section are studied by experimental investigations, where the corrosion is modelled by artificial thickness reduction…
Effect of annealing temperature on the properties of CdS thin films are carried out in this work. Nanocrystalline cadmium sulphide (CdS) thin films were prepared using spray pyrolysis deposition (SPD) technique and the structural, optical and electrical properties were investigated for different annealing temperature…
A simple, efficient procedure for the synthesis of 11-(1H-pyrrol-1-yl)-11H-indeno[1,2-b]quinoxaline and 3-(1H-pyrrol-1-yl)indolin-2-one derivatives in aqueous media is described. The condensation reaction between 4-hydroxyproline and isatin derivatives or 11H-indeno[1,2-b]quinoxalin-11-ones, using a catalytic amount o…
Two complexes [Pd(L(1))(en)](2)·4H(2)O (1), [Pd(L(2))(en)]·2H(2)O (2), (L(1) = pyridine-2,3-dicarboxylic acid, L(2) = pyrazine-2,3-dicarboxylic acid, and en = ethylenediamine) have been synthesized and characterized using IR, (1)H NMR and element analysis. X-ray analyses of complexes 1 and 2 revealed that 1 belongs to…
Biomedical scaffolds need to be designed to support high seeding efficiency and facilitate high cellular activities (proliferation and differentiation) of injected cells with appropriate mechanical properties. In this study, solid freeform fabricated/freeze-dried biocomposites were manufactured from mixtures of polyca…
We report on new insights into the relationships between structure and activity of glassy carbon (GC), as a model material for electrocatalyst support, during its anodization in acid solution. Our investigation strongly confirms the role of CFGs in promotion of Pt activity by the "spill-over" effect related to CO(ads)…
In order to evaluate performance and wear of gear cutters and coatings, various analogy cutting tests are nowadays used. Since these state-of-the-art tests significantly differ in complexity and comparability to real dry hobbing applications, this work presents a critical literature comparison highlighting the differe…
In living polymerization, the inevitable dead chain impurities, due to bimolecular termination and side reactions, are not only an obstacle for the synthesis of pure block copolymers but also an impairment in the application performance of the resulting polymer materials. In this paper, a simple separation and quantif…
The reaction of sodium perfluoro-tert-butoxide with benzylic carbon-bromide bond(s) leads to the formation of (nonafluoro-tert-butoxy)methyl ponytail(s), which can enhance the fluorous solubility and partition of aromatics and heterocycles.
In this study, three different microstructures of dual-phase (DP) steel obtained by varying the intercritical annealing temperature were observed three dimensionally by a serial-sectioning method and their metrics and topological properties were quantified. The results demonstrated that martensite in DP steels has var…
In the present study, for the first time, a simple and rapid electrochemical sensor was developed for the simultaneous determination of 4-aminohippuric acid (PAH) and uric acid (UA), based on the excellent properties of functionalized multi-walled carbon nanotubes (fMWCNTs). A glassy carbon electrode was modified via…
High-performance photocatalytic and photoresponsive properties have been made from composite ZnSnO 3 nanowires. The composite nanowires consist of several phases, such as a major phase of ZnSnO 3 and second phases of ZnO, SnO 2 , and metallic Zn nanowires. These nanowires formed many nanowire-to-nanowire junctions at…