Materials Literature
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Methacrylate-containing organosilsesquioxanes with M n = (1.5−5.0) × 103 were synthesized via hydrolytic polycondensation of γ-methacryloxypropyltrimethoxysilane under different conditions. On the basis of comparison of 29Si NMR data and the molecular masses of the oligomers, it was concluded that oligomer molecules c…
Basic physical, physicomechanical and physicochemical characteristics of diamond nanopowders of detonation and static syntheses and carbon composites on their base have been discussed. It has been shown that the above properties depend on the composition of the initial raw material, thermobaric conditions of the synth…
Micrometer‐scale anatase‐phase TiO 2 congeries assembled with hollow spheres have been synthesized by a bubble‐template method combined with a facile chemical process. The as‐prepared products were characterized by means of X‐ray diffraction, field emission scanning electron microscopy, and transmission electron micro…
We investigated the effects of ambient gases on the catalytic properties of Au in the synthesis of single-walled carbon nanotubes (SWCNTs). We found that H 2 could effectively activate the Au catalyst during both the pretreatment stage and the chemical vapor deposition (CVD) process, and increase the nucleation densit…
It has been established by the method of electron microscopy that the irradiation of the cold-worked aluminum alloy VD1 of the Al-Cu-Mg-Mn system by Ar + ions with an energy of 40 keV leads to the formation in it of a developed subgrain structure with equiaxed dislocation-free subgrains. The study of the structural st…
3-(2-Hetarylethenyl)chromen-2-ones were synthesized for the first time, following two different schemes, and their spectral and photochemical properties were studied. The title compounds were found to undergo both reversible and irreversible photoinduced transformations which are accompanied by considerable change of…
A set of geometrically based FCC crystal slip-systems hardening inequalities is analytically investigated in (110) channel die compression for all lateral constraint directions between and , following previous analyses of the other two distinct orientation ranges in (110) compression. With all critical slip systems ac…
Feldspar is being used herein as a filler for recycled polyethyleneterephtalate/natural rubber (R-PET/SMRL) composites. It is found that stabilization torque derived from the Brabender plasticorder decreases with feldspar loading. This scenario is related to the plate like lamellae structure of the feldspar which acts…
Stress induce voiding (SIV) inside and under vias in copper interconnects with ldquowingrdquo-pattern were investigated for 90 nm and 65 nm node processes. The difference of two voidings are the resistance change during acceleration test and the diffusion path. However, common features were found between both types of…
The effect of the concentration of preliminarily introduced hydrogen on the creep and long-term strength of VT6 (Ti-6Al-4V) titanium alloy is studied experimentally and theoretically at a temperature of 600°C and nominal stresses of 47–217 MPa. Tests show that the presence of hydrogen in the titanium alloy (to 0.3 wt…
Abstract:- In the field of garment manufacturing, the planning and control of production and inventory are rather complicated procedures. This is the reason that establishing standard sizing systems is necessary and important for garment manufacturers in Taiwan. As the standard sizing systems need anthropometric data…
Hydrocarbons such as methane, ethylene, and CO with high purity (> 99.9%) have been widely used to synthesize single-walled carbon nanotubes (SWCNTs). Here, liquefied petroleum gas (LPG) was used to synthesize SWCNTs by catalytic chemical vapor deposition. The LPG converted into CNTs and other stable hydrocarbons.…
A method is presented for the experimental and calculated estimation of the reliability of internal combustion engine liners exposed to the cavitational-erosive effect of liquid coolant. Combating corrosion of liners of high-and medium-speed engines has remains important because the life of liners with regard to cavit…
To confirm the applicability of thermally induced ultrasound emission from nanocrystalline porous silicon (nc-PS) devices to the directional sound emitter, the spatial emission pattern of a two-dimensionally arrayed nc-PS device has been investigated theoretically and experimentally. A 3 × 3 nc-PS device array is fabr…
In this paper, we present our work on the electrodeposited CdSe semiconducting nanowires. Using a low cost and low temperature approach by electrochemistry, CdSe nanowires were successfully grown using polycarbonate template. Depending on the host pore dimension of the substrate, wire diameter can be varied from 400 n…
Variation in the extent of annealing of a TiO 2 (110) surface was used to control the distribution of deposited Pd, Au, and Pd−Au clusters at room temperature. Programming with respect to the metal deposition and thermal sintering was used to optimize the size distribution and cluster density of Pd−Au mixed-metal clus…
The comparative analysis of potassium fixation by soddy-podzolic and chernozemic soils with different nutrient supplies was performed using a standard ammonium acetate solution and 0.25 and 0.01 M CaCl 2 solutions. It was found that the application of potassium to soils unfertilized for a long time increased the fixat…
Abstract Hydrogen absorption, mechanical testing under different loading mode and electrochemical measurement were done for 0.3C low alloy steels used in the ship engine parts at immersion in the boiler fuel and in the used engine mineral oil at elevated temperatures corresponding to the operating conditions. The hydr…
A repeated growth process (regrowth process) has been carried out to fabricate a carbon nanotube (CNT) array without additional catalyst by a custom-made plasma-enhanced thermal chemical vapor deposition (PE-thermal CVD) technique. An Fe film with a thickness of 3 nm is coated as a catalyst before the first growth on…
The reaction between benzoic acid hydrazide and potassium bromate catalyzed by Anderson type hexamolybdochromate(III) was carried out under pseudo-first-order condition keeping large excess of hydrazide concentration over that of the oxidant. The reaction is accelerated by the hydrogen ion concentration due to the inv…