Materials Literature
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The characterization of corrosion patinas on bronzes is preliminarily connected to the determination of proper conservation strategies. Moreover, it also provides an essential contribution to the comprehension of the mechanisms of formation of patinas. Concerning the last aspect, several studies highlighted that bronz…
Raman spectroscopy is a powerful technique for detecting peroxo (O 2 ) 2– and superoxo (O 2 ) – species adsorbed on defect sites of ceria. These sites are probed by reducing CeO 2 at high temperature and then chemisorbing oxygen species at low temperature. In the present study, it is shown for the first time that such…
A thermo-responsive poly{γ-2-[2-(2-methoxyethoxy)ethoxy]ethoxy-ε-caprolactone}-b-poly(γ-octyloxy-ε-caprolactone) (PMEEECL-b-POCTCL) diblock copolymer was synthesized by ring-opening polymerization using tin octanoate (Sn(Oct)(2)) catalyst and a fluorescent dansyl initiator. The PMEEECL-b-POCTCL had a lower critical so…
The constitutive behavior of aluminum alloy A356 in the as-cast condition has been characterized using compression tests performed over a wide range of deformation temperatures (30-500°C) and strain rates (\approx0.1-10 /s). This work is intended to support the development of process models for a wide range of conditi…
Experimental Kitagawa analysis has been performed on A356-T6 containing natural and artificial defects. Results are obtained with a load ratio of R = -1 for three different loadings: tension, torsion and combined tension-torsion. The critical defect size determined is 400 \pm 100 \mum in A356-T6 under multiaxial loadi…
The formation mechanisms of silver nanoparticles using aqueous silver perchlorate solutions as precursors and sodium borohydride as reducing agent were investigated based on time-resolved in situ experiments. This contribution addresses two important issues in colloidal science: (i) differences and analogies between g…
While pseudocapacitors represent a promising option for electrical energy storage, the performance of the existing ones must be dramatically enhanced to meet today's ever-increasing demands for many emerging applications. Here we report a nanostructured, mixed-valent manganese oxide film that exhibits anomalously high…
Ice-repellent coatings can have significant impact on global energy savings and improving safety in many infrastructures, transportation, and cooling systems. Recent efforts for developing ice-phobic surfaces have been mostly devoted to utilizing lotus-leaf-inspired superhydrophobic surfaces, yet these surfaces fail i…
The influence of carbon–carbon bond order, here systematically represented by prototypical C 2 H 6, C 2 H 4, and C 2 H 2, on the formation of oxidation products and surface species in the absence and presence of NO has been studied for silver-alumina catalysts with different silver loadings (2 and 6 wt %). The catalys…
Praseodymium ( Pr 3+ ) with rich f energy levels can generate various visible emissions, but the luminescence of Pr 3+ in a CaWO 4 matrix has not yet been studied. In this article, the phosphors of Pr 3+ ‐doped CaWO 4 were synthesized via a high temperature solid‐state reaction, and the photoluminescence (PL) and afte…
Transparent colorless glasses in the ternary BaO–TiO 2 –B 2 O 3 system were fabricated via conventional melt‐quenching technique. The glasses with certain molar concentrations of BaO and TiO 2 on heat treatment at appropriate temperatures yielded nanocrystalline phase of TiO 2 associated with the crystallite size in t…
R 7 T 7‐type glass samples doped with different concentrations of 244 Cm and stored for different time periods to produce different levels of accumulated radiation damage were analyzed by differential scanning calorimetry to better understand the structural evolution of R 7T7 nuclear glass due to the accumulation of α…
Second order nonlinear optical imaging of chiral crystals (SONICC) and two-photon excited fluorescence measurements [both autofluorescence and two-photon excited UV-fluorescence (TPE-UVF)] were assessed for the selective detection of APIs relative to common pharmaceutical excipients. Active pharmaceutical ingredients…
Research Article| August 01, 2012 Precipitation of barite by marine bacteria: A possible mechanism for marine barite formation M.T. Gonzalez-Muñoz; M.T. Gonzalez-Muñoz 1Departamento de Microbiología, Universidad de Granada, Campus Fuentenueva, 18002 Granada, Spain Search for other works by this author on: GSW Google S…
A calculational study of the trihalomethanes chloroform (CHCl_3) and bromoform (CHBr_3) adsorbed on graphene is presented. The study uses the van der Waals density functional method vdW-DF to obtain adsorption energies and adsorption structures for these molecules of environmental concern. In this study chloroform is…
The present paper deals with two species of Zopfiella Winter the freshwater ascomycetes viz. Zopfiella latipes (Lundq.) Malloch and Cain and Zopfiella submersa Guarro, Ai-Saadon, Gene and Abdullah were collected from the submerged wood samples from the various water bodies in North Maharashtra region. Zopfiella submer…
Chemically synthesized α-MnO 2 powder was annealed at different temperatures with (NH 4 ) 2 S 2 O 8 as the oxidant and MnSO 4 as the manganese source. The obtained samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and vector network analysis. Results indica…
Ferroelectric domain-wall motions associated with local proton rearrangement and collective proton relay have been revealed in hydrogen-bonded organic ferroelectrics, Phz-H${}_{2}$ca [phenazine (Phz)-chloranilic-acid (H${}_{2}$ca)], through dielectric measurements and piezoresponse force microscopy. The domain wall (D…
Selective-area growth of diamond films in microwave-plasma chemical vapor deposition was performed using newly developed masks. By forming chemically stable masks made of Ru/Au or Mo/Au, which have high melting points, good adhesion to diamond, and difficulty in forming carbide compounds, patterned diamond films with…
Abstract 2‐[( E )‐{(1 S ,2 R )‐1‐hydroxy‐1‐phenylpropan‐2‐ylimino}methyl]phenol has been synthesized and its influence on corrosion of mild steel in 1 M HCl solution has been studied by means of weight loss and electrochemical measurements under various circumstances. The inhibitor showed a maximum of 91 % of inhibiti…