Materials Literature
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Several kinds of highly-branched block polyethers were synthesized via anion ring-opening polymerization of propylene oxide (PO) and ethylene oxide (EO), using phenol-amine resin (PA) as the initiator. The rheological properties determined by rotational rheometer all followed the regular rules of polymer systems: unde…
This research studies the properties of a plain knitted fabric made from cotton/T‐400 ring core spun yarn and 100% cotton ring spun yarn. Properties of plain knitted fabric made from 100% cotton ring spun yarn were compared with one made from cotton/T‐400 (70.4C/29.6T). We focused on knitted fabric properties such as…
The bismuth film formation from acid nitrate solution on glassy carbon electrode (GCE), graphite electrode (GPE) and on an assembly of carbon fiber microelectrodes (CFME) were studied utilizing cyclic voltammetry (CV) and chronoamperometry (CA). Voltamemetric data obtained with all three electrodes indicate that bismu…
The study of iron losses in electrical machines represents a major interest in academic and industrial environment, especially in case of systems with high-frequency (HF) harmonic content in the supply voltage. In this context, this paper presents an analysis concerning the impact of HF injection on low-frequency (LF)…
The optical absorption spectra of Er:Li2B4O7 glasses are studied in the range 200–800 nm. The lines corresponding to the direct f-f parity-forbidden intraconfigurational transitions from the ground 4 I 15/2 state to the levels of the excited 4 F 9/2, 4 S 3/2, 2 H 9/2, 2 H 11/2, 4 F 7/2, 4 F 5/2, 4 F 3/2, 2 H 9/2, 4 G…
A virtual scanning electron microscope (VSEM), which is based on a simulator of information, obtained on a real scanning electron microscope (SEM), is described. A semiempirical generation model of images in a SEM, operating in the low-voltage mode and high-voltage mode during recording backscattered and secondary slo…
The spectral characteristics of the photoresponse of heterostructures with layers of densely packed amorphous silicon nanoparticles produced by laser electrodispersion are studied. The structures exhibit rectifying properties. Annealing in air results in the appearance of silicon oxide nanoparticles in the layers and,…
We present a method to fabricate superhydrophobic surfaces on copper substrate using reciprocating type high speed wire cut electrical discharge machining (HS-WEDM) and self-assembly technology. Herein, single factor experiment was used to investigate the influence of several major parameters of the wire electrical di…
CdS films are used as window layers in CdS/CdTe solar cells, and an annealing process is required to promote grain growth and recrystallization in them. However, when annealing is performed in an air atmosphere, oxides such as CdO and CdSO 4 form on parts of the layer’s surface, which reduces the shunt resistance and…
The methods of quartz crystal microbalance, atomic force microscopy (AFM), scanning electron microscopy (SEM), Fourier-transform IR spectroscopy, and X-ray structural microanalysis were is used to show that adsorption of vinyl silane on an aluminum surface from an aqueous solution results in formation of a uniform, se…
Punching and laser cutting of non-oriented silicon iron sheets (NO FeSi) determine changes in the material at the cutting edge, which produce an important effect on the magnetic properties. Through punching it results a plastic deformation in the zone near the cutting edge. Laser cutting technology causes thermal stre…
This paper presents the development of novel permanent magnet synchronous motors made of a soft magnetic composite (SMC) material. They have 3-D magnetic flux but also hollow stator teeth, which can give a reduction of copper losses and motor volume. It is clarified that the efficiency can be improved by using the SMC…
In order to realize the online monitoring for iron grade of the magnetite during the dressing process, an iron grade fast measurement method based on electromagnetic induction is given, critical segment of the method is to make the iron grade information acquisition by adopting an iron ore core inductance sensor. Magn…
A surface modification which renders a carbon electrode sensitive to β-glucosidase enzyme activity is reported. 2-Nitro-4-(4-diazophenoxymethyl)-phenyl β-D-glucopyranoside was prepared in four steps from the known starting material 2-nitro-4-benzyloxy 2,3,4,6-tetra-O-acetyl-β-D-glucopyranoside. A film was formed by th…
It has been reported that water can induce osteogenesis and regeneration of bone. However, biocompatibility and safety aspects of this material We have evaluated the mutagenicity of the raw material and the steril processed material of Indonesian coral osteogenic bone graft. In addition, heavy metals determined. A mut…
Introducing the temperature as a parameter in the shock-wave experiment can significantly enlarge the scope of phenomena that can be studied. The influence of temperature on the elastoplastic processes accompanying the high-rate deformation and the phase transitions in shock waves is nontrivial and far from complete u…
A comparative analysis of the Raman spectra of CdTe and Cd0.2Hg0.8Te crystals stored in air, ammonia NH3, and carbon dioxide CO2 is performed. It is established that the chemical adsorption of gases causes deformation of the surface of the semiconductors, the signal shape of recombination luminescence varies and hidde…
The amino functionalized magnesium phyllosilicate clay (AC) intercalated over PVA-Nafion hybrid nanocomposite membranes were prepared by sol-gel method. The free standing membranes were obtained by solution recasting. The composition of clay materials such as AC and montmorillonite (MMT) was varied between 2-10 wt.% w…
The relationship between abrasive particle size and polishing rate (PR) of a chemical mechanical polishing (CMP) process is studied both experimentally and theoretically. PR of NiP-plated aluminum substrates polished by spherical silica particles of a uniform size becomes the maximum around at 50nm in particle size. A…
This paper presents an arbitration mechanism to balance bandwidth consumption or data throughputs between packets in a network-on-chip (NoC) with ID-based wormhole cut-through switching method. When data traffic flowing through a network communication link is high, the bandwidth space of the link, which is comsumed by…