Materials Literature
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The roots of Crytolepis sanguinolenta, a medicinally important ethanobotanical source of the antimalarial cryptolepine, were soxhlet extracted in anaerobic conditions, using hexane then ethanol. Samples of each extract were fractioned using flash chromatography and preparative TLC and compound identity was established…
Abstract The mechanical or use properties of alloys are determined by their chemical composition and microstructure history. The microstructure changes during phase transformations occurring during solidification, thermomechanical processing and subsequent heat treatments. The best mechanical properties for the chosen…
GaN-based light emitting diodes with photonic crystal at the light emitting mesa and nano-hole at the periphery of the mesa using the same photonic crystal pattern are designed and fabricated. Optical properties such as luminescence-current characteristics, radiation profiles and angular spectra of the three kinds of…
Some recently published work on fast charge packets in XLPE is discussed in order to show the significant influence of activation entropy on these measurements.
The interaction of a number of phenol compounds with silica filler of polymer compositions (highly dispersed amorphous silicas) was studied by the pyrolysis gas chromatography mass spectrometry. AP-UBS modifier was tested in protector, facing, and breaker rubber mixtures.
The liquid state structure of the ionic liquid, 1-ethyl-3-methylimidazolium acetate, and the solute/solvent structure of glucose dissolved in the ionic liquid at a 1:6 molar ratio have been investigated at 323 K by molecular dynamics simulations and neutron diffraction experiments using H/D isotopically substituted ma…
Abstract In this study, ZrO2 + Y2O3/Al 2 O 3 powders were coated on the surface of aluminum bronze (Cu + 5 % Al) by using the atmospheric plasma spraying method. The effect of Al 2 O 3 on microstructure and hardness was examined in four different coatings applied by using 5-10-20 % Al 2 O 3 ratio in ZrO2 + Y2O3 and Zr…
The protection against the corrosion of the carbon steel in aqueous environment by commercial inhibitors, based of nitrite and alkanolamine, has been studied by electrochemical impedance spectroscopy (EIS) and several analytic methods. An inhibitor’s efficiency has been determined with the two compounds on polished su…
The continued down-scaling of complementary metal-oxide-semiconductor (CMOS) devices requires replacement of the conventional Si dioxide or oxynitride dielectric by alternative high-k materials immediately. For long term consideration, electron devices may be replaced by spintronic devices which make use of both charg…
In this work, filtered cathodic vacuum arc (FCVA) has been used to form aluminium oxide thin films, which is a promising method not only due to the characteristics of high ionization ratio and high ion energy (50 eV ~ 150 eV) but also the effective removing of the macroparticles and therefore resulting in high quality…
In this paper the effect of single nanosecond laser pulse irradiation on the microstructure and field emission (FE) properties of carbon films is studied. Amorphous carbon films are exposed to a single pulse of a 248 nm excimer laser with pulse width of 23 nsec and varying energies. Microstructural changes of the film…
Froth flotation is the largest tonnage separation process worldwide and is used for paper deinking, water purification and, particularly, mineral separation. One of the key aspects of the performance of flotation cells is the behaviour of the liquid within the froth, as it is crucial to the purity of the product and a…
info:eu-repo/semantics/nonPublished
Transportation for each step of a closed fuel cycle is analyzed in consideration of the availability of appropriate transportation infrastructure. The United States has both experience and certified casks for transportation that may be required by this cycle, except for the transport of fresh and used MOX fuel and fre…
This paper presents an effective control algorithm to avoid physical contact between the disk and the solid immersion lens (SIL) in near-field (NF) storage systems under dynamic operating conditions such as repeatable and nonrepeatable disturbances due to disk vibrations and external shocks. In particular, the air-gap…
A moderate-temperature method for the synthesis of calcium fluoroapatite in chloride and carbonate melts is developed. It is shown that fluoroapatite can contain CO 3 2− and OH− groups in different ratios depending on the parameters of its synthesis. The influence of CO 3 2− and OH− groups on the sorption properties o…
In this study, a high-capacity electric double layer capacitor (EDLC) was targeted, and an influence on a capacitance by a surface functional group of Ketjenblack (KB) powder as a conducting material of a polarized electrode was examined. Existence of an oxygen functional group on a surface of a carbon electrode in ED…
The magnetically controlled Shape Memory alloy (MSMA) is a new type of intelligent materials, which has large strain and high efficiency of electromechanical energy conversion, but at this time it is not actually used as actuators. So in this paper we mainly expounded the working principle of MSMA actuator and complet…
A small droplet of liquid Ge was formed by ejecting molten Ge from a 300 μmφ nozzle of a carbon cylinder heated at 1850 K. When a liquid Ge was dropped onto hydrogen-terminated c-Si and quartz surface under N2 ambient without any external heating, the width and height of solidified Ge crystals can be controlled in the…
Electrical explosion of wire has a prosperous future in fine powder producing. In the process of electrical explosion of segmented metal wire (EESW),energy deposited in the wire was influenced by process variables such as the initial charging voltage of the capacitors, the length and the diameter of the segmented wire…