Materials Literature
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A facile route to synthesis silver nanoparticles into polyvinylpyrrolidone (PVP) or silica (SiO2) matrices using sol-gel method has been developed. The influence of matrices on the size and optical properties of silver nanoparticles were studied. Because the particle size increases at different rate with silver nitrat…
Nitrogen oxides (NOx) are one kind of harmful substances causing serious pollution on atmospheric environment. Characteristics of NOx from coal-fired utility boilers are massive and lean. In this paper, large coal-fired boilers were chosen as the object, NOx formation mechanism and control were studied, and comparativ…
The inclusions are to a large extent prevented from contamination and many temporal changes as they are embedded within minerals. However, an essential part of the investigation procedure is the method of extracting fluids from such minerals. Since mechanical drilling or polishing involves a high risk for contaminatio…
Ultrasound contrast harmonic imaging techniques based on shelled microbubbles' nonlinear oscillation have been used in clinical diagnosis successfully, however a parameter characterizing the nonlinear scattering properties of a single bubble has not been found yet. In this study, based on Church Hoff equation describi…
The low-frequency dielectric function and conductivity at ferroelectric phase transition have been analyzed in monoclinic TlInS2 crystals doped with different impurities. Complementary, room-temperature optical absorption and photoconductivity have been examined to identify shallow and deep energy levels caused by the…
One-dimensional SrSn(OH)6nanowires were successfully synthesized through a rapid simple methods sonochemical synthesis at room temperature without using any templates or surfactants. The growth mechanism has been proposed, and the reaction conditions were carefully investigated. The experimental results revealed that…
This paper reports on the first demonstration of high-Q 1D photonic crystal nanocavities in the chalcogenide glass Ge11.5As24Se64.5. This material has a high nonlinear figure of merit due to its low two-photon absorption and large Kerr nonlinear coefficient, making it ideal for ultrafast switching applications. The ca…
Experiments were conducted to investigate the decolorization of methyl orange simulated wastewater in order to assess the effectiveness and feasibility of ultrasound(US) enhanced high-purity chlorine dioxide(ClO2) oxidation process. The results showed that in ClO2/US system the decolorization rate of methyl orange was…
To prevent the silica scale formation in the geothermal water recycling process, the silicic acid perfectly removed from geothermal water as calcium silicate by calcium nitrate. Ordered mesoporous silica was synthesized at strong acidic condition by using low cost calcium silicate as silicon source, which was separate…
In this contribution, the simultaneous and switchable laser operation is reported at 523 nm and 640 nm. A dual wavelength laser operation at 607 nm and 640 nm of Pr:YLF was previously obtained by the use of intracavity prisms.
The dielectric properties of solid solutions based on sodium potassium and sodium lithium niobates have been studied in wide ranges of temperatures (25–750°C), frequencies (25 to 10 6 Hz), and electric fields (up to 30 kV/cm). We have identified solid-solution regions differing in the temperature and frequency depende…
The method of deposition from solutions was used to synthesize [RhL 4Cl2]HSO4 · nH2SO4 · mH2O complex salts (L = Py, γ-picoline), n ≈ 0.5−0.6, m ≈ 5−6. According to the data of X-ray phase analysis, the crystal structure of these salts is formed by layers of cations separated by layers consisting of anions molecules o…
According to the desulphurization reaction temperature and the content of calcium sulfite, FGD ash is simulated, that is the ordinary fly ash mixed with different weight percentage of CaSO3·1/2H2O is followed by drying at 100°C. And then by the experiment of workability, strength, sulfate resistance and rebar corrosio…
^{75}As and ^{139}La NMR and nuclear quadrupole resonance (NQR) studies on Zn-substituted LaFeAsO_{0.85} have been performed to microscopically investigate the Zn-impurity effects. Although superconductivity in LaFeAsO_{0.85} disappears by 3% Zn substitution, we found that NMR/NQR spectra and NMR physical quantities i…
Transversal magnetoresistance is calculated for numerous metal cases on the basis of simple electron theory. Any metal can be represented by a single band of states having a closed Fermi surface which is assumed to be similar in shape to a sphere. In an external electromagnetic field the electron transport seems to be…
The authors performed a detailed spectroscopic investigation varying both excitation energies and intensities to test these models. Graphene photoluminescence is found to be very broad ranging from 600 to 1200 nm. While the authors observe different photoluminescence spectra at different excitation energies no pronoun…
Eight bioactive drug compounds (abamectin, amoxicillin, dexamethasone, dexamethasone valerate, ketoprofen, melatonin, oestradiol 17β, and oestradiol benzoate) were combined via melt extrusion and disc pressing processes with a polycaprolactone (PCL) matrix and were then evaluated and compared via membrane diffusion an…
Magnetization and magnetic susceptibility measured in the zero-field-cooled mode were used to study the spin crossover transition in polycrystalline Cu x Co y Cr z Se 4 compounds.With increasing Co content a transition from ferromagnetic order via ferrimagnetic one to antiferromagnetic-like behaviour was observed.This…
We present a study of the neutral exciton and negative trion recombination spectra of an individual CdTe quantum dot with a single manganese ion, in magnetic field measured in the Voigt configuration. We describe experimental results and compare with a theoretical model. The quantitative agreement between the model an…
The as-cast microstructures of high carbon high speed steels (HC-HSS) made by sand casting, centrifugal casting and electromagnetic centrifugal casting, respectively, were studied by using of optical microscopy (OM) and D/max2200pc X-ray diffraction. The results show that the microstructure of as-cast HC-HSS is domina…