Materials Literature
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In this work Barium Titanate- Polyvinylpyrrolidone (BaTiO3/PVP) composite nanofibers are synthesized via electrospinning with sol-gel precursor. BaTiO3nanofibers are obtained after calcinning the composite at 960 °C for 20 h. The morphology and crystal structure of the electrospun composite nanofibers are characterize…
An easy optimization methodology for design of permanent magnet synchronous motors is presented. The analyzed structure is a permanent magnet assisted synchronous reluctance motor (PMA-SRM). For a motor design optimization the parameters are the geometric and electrical magnitudes. The proposed method of optimization…
T Salge, R Tagle, L Hecht, L Ferriere, AD Ball, A T Kearsley, C Smith, C Jones; Advanced EDS and µXRF Analysis of Earth and Planetary Materials using Spect
Anna Tararan, Alberto Zobelli, Ana Benito, Wolfgang Maser, Odile Stephan; A New Structural Model for Graphene Oxide and Reduced Graphene Oxide as Revealed by Co
The tribological behaviour of a G-P ( glass-polyester ) composite system and G-P composite systems interfaced with graded fillers were tested. The composite materials of G-P and G-P reinforced with SiC and Graphite particles as secondary fillers were experimentally investigated under varying loads, sliding velocities…
Neste trabalho são estudados os efeitos da adição de nanotubos de carbono de parede múltipla (NCPM) em uma matriz de Poli(L-ácido láctico) (PLLA). Foras avaliadas duas rotas distintas de dispersão dos NCPM, uma utilizando agitação mecânica em solvente e a outra utilizando sonificação de alta energia em solvente. As pr…
Bofan Zhu, Wen Li, Carlo Segre, Randy Lewis, Russ Janota, Naiwei Chi, Rong Wang; A Study of Unidirectionally Aligned Collagen-Silk Composite Fibers and the
In this paper, a coplanar waveguide (CPW) fed continuous transverse stub (CTS) antenna array with beam steering capability is proposed and validated for cognitive radio applications. A novel reconfigurable negative reflect index (NRI) phase shifter is integrated with the CTS element to provide continuous phase states.…
Using the first principles method, which is based on the density function theory (DFT), the structures and electronic properties for different concentration of H2S are adsorbed on the Fe (100) surface, and their molecular orbital and absorption energies were calculated with the generalized gradient approximation. The…
Transmission electron microscopy in combination with in situ high-pressure and high-temperature measurements is uniquely able to provide high-resolution data about materials under conditions resembling those in Earth’s interior. By using nanocontainers made of graphitized carbon, it is possible to achieve pressures an…
The redistribution of alpha particles due to internal kink modes is studied. The exact particle trajectories in the total fields, equilibrium plus perturbation, are calculated. The equilibrium has circular cross section and the plasma parameters are similar to those expected in ITER. The alpha particles are initially…
AlCuFe alloys with a nominal composition of Al63Cu24Fe13, Al62Cu25.5Fe12.5 and Al65Cu20Fe15 have been fabricated by solid-state reaction at 550, 650, and 750 C. The synthesized alloys mainly consist of icosahedral Al65Cu20Fe15, body-centered cubic -AlFe(Cu) and monoclinic -Al13Fe4 phases. After synthesis under optimal…
Electron spin waves on the surface of a semiconductor nanotube with a superlattice in a magnetic field have been considered. The spin-wave spectra and regions of collisionless wave damping have been found. It has been shown that the spin waves do not exhibit damping on small-radius tubes with a degenerate electron gas.
PP fibers are commonly used for oil spill cleanup. In order to improve the oil-sorption capacity of the PP fibers, the blended PP fiber of various MFR and unblended PP fiber of certain MFR were fabricated as sorbents by a swirl die melt-blowing device in this study. The material properties of the PP fibers were examin…
MoO3was synthesized by thermal decomposition of ammonium molybdate. The structure and surface morphology of the as-prepared MoO3was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The supercapacitive behaviour of MoO3in 1 mol L-1KCl electrolyte was studied by cyclic voltammetry (CV), g…
Reciprocating fatigue tests were performed for five kinds of stainless steels, induction heated 13Cr–2Ni–2Mo, non-treated SUS304, hard chromium plated SUS304, soft nitrided SUS304 and SUS630. We observed material microstructure, hardness distribution, wear track depth and crack propagation in these materials. It is co…
Glasses synthesized on the basis of the R2O-B2O3-SiO2 system, where R2O is Na2O or K2O, have been investigated for the reflective and protective claddings of optical fiber. Laws have been established to describe how the oxides affect the glass-forming capability of optical glasses and their tendency to crystallize in…
It is important to develop low cost and efficient technique for simultaneous removal of SO2and NOXfrom flue gas. In this paper, ozone oxidation and alkaline wastewater washing process was employed for flue gas desulfurization and denitrification in a 75t/h coal-fired boiler. In order to optimize the operation paramete…
A facile and efficient hydrothermal process was explored to obtain tobermorite nanowires using porcelain stone and CaO powders as raw materials. The as‐synthesised nanowires have a diameter of 50–100 nm and a length of tens of micrometres under conditions of a porcelain stone/CaO weight ratio of 3, a water/solid weigh…
Abstract Im Rahmen eines innerhalb des Länderfinanzierungsprogramms “Wasser, Boden, Abfall” geförderten Forschungsvorhabens wurde das Durchflussverhalten von landwirtschaftlichen Flüssigkeiten in Trennrissen untersucht, um belastbare Aussagen zu erhalten, ob und in welchem Umfang Selbstdichtungsprozesse nachgewiesen u…