Materials Literature
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In this study, about 62.2 wt% Ti3SiC2 was synthesized via tungsten inert gas (TIG) welding method, as potential in advanced material applications. This arced sample was characterized using XRD and FESEM analysis to observe the phase presence, and its morphology. Ti3SiC2 phase favours to form at 5 s and produces elonga…
Helicales syndiotaktisches Polymethylmethacrylat (st-PMMA) lagert C60-Moleküle ins Innere seiner Helixstruktur ein und bildet so einen molekularen Draht, dessen Aufbau an Erbsenschoten denken lässt. In der Zuschrift auf S. 1083 ff. berichten S. Qi, S. Irle, E. Yashima et al. über Sandwich-Funktionseinheiten mit diesem…
Bismuth titanate was systematically prepared by a single step combustion synthesis. Based on TG-DTA, the corresponding phase was completely obtained below 300°C, resulting in highly exothermic peak at 236°C. The formation of a single crystalline structure of Bi-layered with different degree of crystallinity was strong…
The facters of molar ratio of aniline and ammonium persulfate ,aniline concentration, concentration of HCl , carbon species and different additives was studied on the yield and conductivity of polyaniline, also the coulomb efficiency and the cycle life of Zinc-PANi secondary battery. Results show that: the molar ratio…
Scaling structure of the growth rate distribution on the interface of a dendritic pattern is investigated. The distribution is evaluated for an NH4Cl quasi-two-dimensional crystal by numerically solving the Laplace equation with the boundary condition taking account of the surface tension effect. It is found that the…
Zinc oxides nanowires (ZnO NWs) were successfully synthesized on bare silicon substrates using Chemical vapour deposition (CVD) method without foreign catalyst. The ZnO NWs had good crystal quality as they exhibited a strong UV emission (373 nm) corresponding to the free exciton emission and a weak green arising from…
The purpose of this research is to study the effect of synthesis temperature in order to produce anatase TiO2 nanoparticles (NPs) without using strong acids. In this research TiO2 nanoparticles was prepared by the hydrolysis and condensation of titanium (IV) isopropoxide in water at synthesis temperature of 0°C ± 0.1°…
The equilibrium structure of muoniatedtetraphenylgermane (GePh4Mu) was studied using the first principle Density Functional Theory (DFT) method. Three muonium (Mu) trapping sites were considered, namely ortho, meta, and para positions on one of the phenyl rings. Geometry optimization procedure was utilized to determin…
Due to environmental concerns, lead-free solders were introduced in replacing the lead-based solders in microelectronics devices technology. Although there are many lead-free solder available, the Sn-Ag-Cu solder was considered the best choice. But the solder has its draw backs in terms of melting temperature and inte…
Shaping a human world is generally understood from an inorganic point of view. Sand becomes microchips while stones are turned into homes, projectiles or writing surfaces. In this article, I suggest broadening these conceptions and looking at the shaping of our world from an organic point of view, with an emphasis on…
This paper presents a simple solution for the implementation of a single-phase shunt active power filter with improved sliding mode control. The operation mode of the inverter bridge is unipolar, but also bipolar, only for certain periods during the zero-passings of the line current. The sliding surface and the equiva…
PURPOSE: To optimize the perfusion measurements and to recover loss of tagging efficiency from the blood flow measurements in the presence of static field inhomogeneity with the pseudo-continuous arterial spin labeling technique of pTILT, which is sensitive to off-resonance effects due to the employment of concatenate…
The A2Mo3O12 family, where A3+ is a large trivalent cation, can show interesting thermal properties such as negative thermal expansion, also known as thermomiotic behavior, where the overall volume of the material contracts with increasing temperature. A selection of compounds in this family, namely HfMgMo3O12, In2Mo3…
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The green SrAl2O4:Eu2+, Dy3+ phosphor is a well-known persistent material for a wide region of applications such as lighting, traffic signs, interior decoration and medical application. Double activated SrAl2O4:Eu2+, Dy3+ with improved properties has been synthesized through solid state route at different firing atmos…
The classical Fourier heat conduction law gives sufficient accuracy for many practical engineering applications. However, it cannot exactly reflect the real physical mechanism of heat conduction by highly-varying thermal load, at very low temperatures, or at nanoscale. The hyperbolic heat conduction equation can bette…
ABSTRACT A dye‐sensitized solar cell (DSC) made of nanoporous ZnO film on aluminum‐doped zinc oxide (ZnO/AZO) transparent substrate has higher solar‐to‐electric energy conversion efficiency than a DSC consisting of nanoporous ZnO film deposited on conventional fluorine‐doped tin oxide (ZnO/FTO) transparent substrate.…
Auf Partnersuche nutzen auch Diatomeen chemische Signale. Ein Vergleich der metabolischen Profile sexuell aktiver und inaktiver Zellen wurde ein stark heraufregulierter Metabolit im anziehenden Partnertyp als Di-L-prolyldiketopiperazin identifiziert. Diese Verbindung ist das erste Diatomeenpheromon.
Ni-B-graphene catalysts with high catalytic activity towards the electrochemical oxidation of methanol in alkaline solution have been prepared. Cyclic voltammograms of methanol oxidation shows, the Ni-B-graphene electrode exhibited much higher electrocatalytic activity than the Ni-B/C electrode obtained via direct dep…
A simulation of syngas-to-synthetic natural gas (SNG) process is presented. It mainly consists of the modeling of methanation process via a fluidized bed reactor and CO2 removal via Selexol absorption process. The effects of methanation temperature and pressure on the composition, yield and higher heating value (HHV)…