Materials Literature
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An attempt was made on pulp production from the fast growing plant, Acacia hybrid to determine the total yield, screened yield, Kappa number, and fibre morphology of organosolv Acacia hybrid pulp. Uniform-sized chips were taken to undergo pulping in a digester with five different concentrations of ethanol, 50%, 60%, 7…
Plasma-induced damage (PID) due to Cl2/SiCl4/Ar plasma etching of the GaN capping layer (CAP)/GaInN single quantum well (SQW)/GaN structure was investigated by conventional photoluminescence (PL), transmission electron microscopy (TEM), and time-resolved and temperature-dependent photoluminescence (TRPL). SQW PL inten…
Among dendritic architectures, polyanionic dendritic polymers have emerged as novel versatile platforms for applications in nanomedicine. Their appealing properties, such as high functional surface, low polydispersity, hydrophilicity, enhanced circulation time in the blood stream, and superior biocompatibility compare…
The nanobioactive glass (58SiO 2 ‐33CaO‐9P 2 O 5 ) powders were synthesized by simple sol–gel method. The prepared samples reveal amorphous nature, agglomerated spherical morphology with particle size of 100–150 nm. The specific surface area of nanobioactive glass ( NBG ) particle is 147 m 2 /g. The NBG samples were c…
To accurately and easily determine the polarity of AlN using transmission electron microscopy, we compare the convergent-beam electron diffraction (CBED) patterns along the widely used <112̄0 > and <11̄00 > zone-axes. For the <112̄0 > zone-axis, the diffraction disk of g= 0002 differs from that of g= 0002̄, while for…
The structure of a protein (H2AX) as a function of temperature is examined by three knowledge-based phenomenological interactions, MJ (Miyazawa and Jernigan), BT (Betancourt and Thirumalai), and BFKV (Bastolla et al.) to identify similarities and differences in results. Data from the BT and BFKV residue-residue intera…
Sr3GaN3 and Sr6GaN5 could be promising potential materials for applications in the microelectronics, optoelectronics and coating materials areas of research. We studied in detail their structural, elastic, electronic, optical as well as the vibrational properties, by means of density functional theory framework. Both…
We investigated the characteristics of hot-pressed pure yttria ceramics, and annealed them in an oxidation atmosphere.Regardless of the heat treatment in the oxidation atmosphere, XRD analysis showed that all the samples had a Y 2 O 3 phase without structural change.Even though the color variation of the hot-pressed Y…
Some quinazoline derivatives such as: 3-(4-chlorophenyl)-2-methylquinazolin-4(3H)-one (CMQ) and 2-methyl-3-(4-nitrophenyl) quinazolin-4(3H)-one (MNQ) were investigated as corrosion inhibitors for carbon steel in 2 M HCl solution. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, electrochemic…
InGaN/GaN multiple quantum wells (MQWs) on semipolar (11̄01) GaN microstripes on a Si substrate were fabricated and their optical properties were investigated. From cathodoluminescence (CL) analysis, strong CL emission was obtained in an MQW emitting at 433 nm. However, dark lines appeared in MQWs emitting at longer w…
Density functional theory (DFT) calculations, both with and without dispersion corrections, have been performed to investigate the nature of the common surface reaction intermediate that has been shown to exist on TiO 2 (110) as a result of exposure to either azobenzene (C 6 H 5 N═NC 6 H 5 ) or aniline (C 6 H 5 NH 2 )…
On the basis of calculations of multipole moments of meta-atoms forming a planar metamaterial, a new method is proposed for the quantitative determination of its optical and polarisation properties. The efficiency of the method is demonstrated by the example of a planar metamaterial consisting of H-shaped nanoparticle…
O objetivo desse trabalho foi avaliar as propriedades de paineis aglomerados de eucalipto em associacao com cavacos com casca. Foram utilizadas cinco proporcoes (0, 6, 12, 18 e 24%) de particulas de cavaco com casca em associacao com particulas de eucalipto, com adesivo a base de ureia-formaldeido, sendo 6% no miolo e…
Microwave sintering has shown significant advantages in recent years against conventional sintering procedures, emerging as an innovative method for sintering a variety of materials. Efficiency of microwave-assisted sintering is significantly impacted by the volume of fly ash samples treated in a microwave reactor. In…
Molecular dynamics simulations are performed to investigate the effect of surface energy on equilibrium configurations and self-collapse of carbon nanotube bundles. It is shown that large and reversible volumetric deformation of such bundles can be achieved by tuning the surface energy of the system through an applied…
Molecular crystallization typically singles out a specific conformation, or a set of conformations that are identical over large parts and may show some flexibility, from a mixture of equilibrating conformations in solution. To critically evaluate the selectivity of this process, human lactate dehydrogenase isozyme 1…
In this paper, a new surfactant–polymer enhanced oil recovery (EOR) system is investigated for the feasibility of injection in Dagang. The newSP i¬‚ooding system has been designed and developed for Dagang oili¬eld with Dagang petroleum sulfonate (SLPS) as the primary ingredient. The dynamic behavior of the system and…
A platinum subnanocluster catalyst composed of 12 atoms was synthesized using a phenylazomethine dendrimer, which can assemble twelve PtCl4 units by stepwise complexation, followed by reduction to Pt(0). Unreactive olefins that were not activated by conventional 2 nm Pt nanoparticles were successfully hydrogenated by…
The fabrication of periodic arrays of single metal nanoparticles is of great current interest. In this paper we present a straight-forward three-step procedure based on chemical electron beam lithography, which is capable of producing such arrays with gold nanoparticles (AuNPs). Preformed 6 nm AuNPs are immobilised on…
The effect of selective Si doping on the emission efficiency in ultraviolet (UV) light-emitting diodes (LEDs) is investigated both experimentally and theoretically. The results show that the light output power increases with the number of Si-doped barriers (QBs). Experimental results indicate that compared with an all…