Materials Literature
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The synthetic strategy for the preparation of a TTF donor, π-appended with a spin bearing verdazyl radical has been developed. UV-Vis, electrochemical and EPR studies reveal that this is an attractive magnetic building block for subsequent oxidation that could afford new conducting and/or magnetic systems.
Japan is located in the Asian monsoon climatic zone and these climatic conditions are favourable for growing rice in summer. In every age, rice fields have produced the staple food of the Japanese people and have also been the source of the multifunctional roles of agriculture. This paper describes the evolution of ri…
Nanocrystalline diamond films have attracted considerable attention because they have a low coefficient of friction and a low electron emission threshold voltage. In this paper, the author reviews the plasma-enhanced chemical vapor deposition (PE-CVD) of nanocrystalline diamond and mainly focuses on the growth of nano…
The shape of silver sulfide nanomaterials was successfully controlled by understanding the origin of the mixed-shape problem.
We use the Landau–de Gennes model to investigate the magnetic field‐induced instabilities in liquid crystals. In particular, we examine the change of weak and strong stabilities in the pure smectic states and in the pure nematic states. Motivated by de Gennes’ discovery on the analogies between liquid crystals and sup…
Abstract Five new pregnane glycosides, caradalzielosides A–E ( 1 – 5 ), were isolated from the aerial parts of Caralluma dalzielii. Their structures were elucidated by extensive 1D‐ and 2D‐NMR spectroscopic analysis as well as by HR‐FAB‐MS experiments.
A new test rig, founded in part by Rolls-Royce Fuel Cell Systems Limited, by the EU integrated project ‘FELICITAS’, and by the national project PRIN-2005, has been designed and built at the University of Genova to study different early start-up layouts and strategies for solid oxide fuel cell (SOFC) hybrid systems, us…
The present work uses X-ray photoelectron spectroscopy (XPS) to compare the chemical composition of the outer surface of porous and sealed anodic films on commercially pure Al and on , , and alloy substrates. The study also considers some inner surfaces, obtained by mechanical abrasion and argon ion bombardment, in th…
The growth and self-assembly of phenylalanine derived bolaamphiphiles was investigated. The self-assembly process was studied at hydrophobic–hydrophilic interfaces and under aqueous conditions at different pH. The formation of various structures in microscale and nanoscale was examined using atomic force microscopy, t…
Purpose: Microstructure and magnetic properties analysis of barium ferrite powder obtained by milling and heat treatment Design/methodology/approach: The milling process was carried out in a vibratory mill, which generated vibrations of the balls and milled material inside the container. After milling process the powd…
Hydrogen diffusion experiments in 520M carbon steel were performed with the Devanathan- Statchurski permeation cell at 22°C in 0.5M NaCl at pH 7 and -800, -900 or -1050 mV SCE. The hydrogen diffusivity and subsurface concentration (C0) were evaluated by fitting a fourier series expansion of the diffusion equation to t…
Adsorption procedure of two cationic surfactants hexadecyltrimethylammonium bromide (HDTMABr) and benzyldimethylhexadecylammonium chloride (BDHDACl) onto two samples of montmorillonite was studied. Infrared spectroscopy and X-ray diffraction proved intercalation of both quaternary cations into the interlayer space of…
Nanofibrous LaMnO(3) can be immobilized on macrostructured materials using carbon nanofibers as templates; their application as macro-nanostructured catalysts are also presented.
The microstructural details of fourteen Mg–Al–Sr alloys were investigated in the as-cast form by a combination of scanning electron microscopy/energy dispersive spectrometer (SEM/EDS) analysis and quantitative electron probe microanalysis (EPMA). The heat transfer method coupled with the DSC measurement has been utili…
Conductivity spectra of ionic materials with disordered structures are usually thought to consist of several parts, i.e., the DC conductivity, a power-law component, a nearly-constant-loss feature (if identified) and the (far-)infrared conductivity caused by vibrational motion. Such a decomposition may, however, easil…
The reaction of [Cu(DapdoH(2))2](2+) ions with [Cr(III)L(MeOH)2Br](2+) ions (L = 1,4,7-trimethyl-1,4,7-triazacyclononane; DapdoH(2) = 2,6-diacetylpyridine dioxime) produced in situ in methanol, yielded, in the presence of triethylamine, the complex [L(2)Cr(III)(2)(Dapdo)2(OH)2Cu(II)(2)Br(2)](ClO(4))2. It has been char…
BACKGROUND: Insulin is a therapeutic protein that is widely used for the treatment of diabetes. Its biological function was discovered more than 80 years ago and it has since then been characterized extensively. Crystallization of the insulin molecule has always been a key activity since the protein is often administe…
Carbothermal reduction and nitridation (CRN) process was utilized to prepare magnesium aluminum oxynitride (MgAlON) and the influence of reaction variables, such as heating temperature, soaking time and the source of carbon, on the formation of MgAlON was investigated. In addition, the density of samples prepared unde…
Electron microscopy, optical microscopy, and X-ray diffraction studies of dispersions of hydrophilic and hydrophobic thiolate-capped gold nanoclusters in bolaamphiphilic liquid crystals (LCs) indicate random inclusion of the nanoclusters in the LC matrix with a concentration- and monolayer-type-dependent effect on the…
Abstract An experimental method is proposed to investigate the tensile behavior of materials at high strain rates by using a developed split Hopkinson tension bar, rotating disk indirect bar-bar tensile impact apparatus. The mechanically-filtered input tensile pulse is generated by incorporating a prefixed metal bar c…