Materials Literature
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OBJECTIVE: This pilot study evaluates the anastomotic healing of the Excimer Laser Assisted Nonocclusive Anastomosis coronary connector at 6 months in a porcine off-pump coronary artery bypass (OPCAB) model. METHODS: Left internal thoracic artery to left anterior descending coronary artery bypass in two animals and le…
A silica-supported cobalt catalyst was prepared by hydrogen dielectric-barrier discharge (H 2 -DBD) plasma. Compared to thermal hydrogen reduction, H 2 -DBD plasma treatment can not only fully decompose the cobalt precursor but also partially reduce the cobalt oxides at lower temperature and with less time. The effect…
In this paper, an N-doped titanium oxide (TiO 2 ) photocatalyst is deposited by a plasma-enhanced atomic layer deposition (PEALD) system through the in-situ doping method. X-ray photoelectron spectroscopy (XPS) analysis indicates that substitutional nitrogen atoms (∼395.9 eV) with 1 atom% are effectively doped into Ti…
The geometric structures, electronic properties, total and binding energies, harmonic frequencies, the highest occupied molecular orbital to the lowest unoccupied molecular orbital energy gaps, and the vertical ionization potential energies of small Li m B n ( m + n = 12) clusters were investigated by the density func…
The electronic structures of solid solutions CuGa 1− x In x Te 2 are systematically investigated using the full-potential all-electron linearized augmented plane wave method. The calculated lattice parameters almost linearly increase with the increase of the In composition, which are in good agreement with the availab…
This research is focused on the influence of constructional parameters such as the type of weave and density on deformability of pure cotton and cotton/elastane fabrics. In the research, two basic weaves were used: the plain and twill weave without (pure cotton) and with 6.2 percent of elastane in the weft direction.…
Low fracture toughness of SiC ceramics limits their applications for the low reliability. Inclusion of second ceramic phase improves the toughness of SiC ceramics. In this presentation, SiC ceramics with 5wt% TiC was pressureless liquid phase sintered (LPS) with the additives of Al2O3 and Y2O3 to ~98% theoretical dens…
Hercynite (FeAl2O4) with octahedral structure rarely exists in nature and can only be synthesized artificially. However, it is hard to synthesize high purity hercynite. To date, it is known that two main synthetic methods, sintering and electro-fusion processes, are available to synthesize hercynite. Specimens synthes…
Abstract To a mineralogist, minerals are defined primarily by their crystal structure and chemical composition. Many minerals of industrial importance retain this identity in their final application. For the producer and end user, the physical properties of these industrial mineral products such as size and shape dist…
The temperature dependences of the thermal conductivity of planar and nanotubular supracrystalline structures have been calculated at temperatures below the Debye temperature using the Landauer approach for the ballistic conductance of one-dimensional conductors. The mathematical model based on this approach has been…
Bird strike, also known as avian ingestion, is the collision between a bird and an aircraft. Bird strikes have always been a cause of worry in the aeronautical industry: Aircraft both old and new have suffered from bird strikes. Jet engine ingestion occurs when the bird hits the jet engine of an aircraft and gets suck…
Coordinatively saturated gadolinium compounds based on gadolinium 3,5,5-trimethylhexanoate Gd(TMHA) 3 with additives of trioctylphosphine oxide and free 3,5,5-trimethylhexanoic acid were synthesized and studied to design Gd-containing scintillators for antineutrino detection. The obtained complexes were used for prepa…
ZrO2 wet gel was prepared using zirconium n-butoxide as precursor and 1,2-propylene oxide (PO) as a gelation agent in sol-gel process. Then, tetraethoxysilane (TEOS) was used to strengthen the wet gel in aging process. Finally, the monolithic silica/zirconia aerogel was obtained by supercritical fluid drying. N2 adsor…
In the design of high-performance massive multicore chips, power and temperature have become dominant constraints. Traditional multicore designs, based on the Network-on-Chip (NoC) paradigm, suffer from high latency and power dissipation as the system size scales up due to the inherent multi-hop nature of communicatio…
Non-Foster circuits can be used to provide broadband impedance matching for antennas and metamaterials. These circuits allow effective matching over a much wider bandwidth than is expected from traditional passive components. Therefore, this paper considers the design and test of a negative capacitor in a 0.5 micron C…
The structure and mechanical properties of nano- and ultradispersed mechanically activated heavy W-Ni-Fe and W-Ni-Fe-Co tungsten alloys (VNZh and VNZhK alloys, respectively) are studied. Mechanically activated nano- and ultradispersed charge powders are sintered by free sintering (thermally activated) and spark plasma…
This paper proposes a design of outer-rotor field-excitation flux switching motor(FEFSM) with a topology of 12-slot and 10-pole configuration(12/10) for electric vehicle as a low-cost of non-Permanent Magnet (PM) machine for HEV drives. Design study, performance analysis of field-excitation flux switching machine with…
The experimental spatial resolution of vector potential photoelectron microscopy is found to be much higher than expected because of the cancellation of one of the expected contributions to the point spread function. We present a new calculation of the spatial resolution with support from finite element ray tracing, a…
Abstract Ductile iron casts with a higher silicone content were produced. The austempering process of high silicone ductile iron involving different austempering times was studied and the results presented. The results of metallographical observations and tensile strength tests were offered. The obtained results point…
Abstract High-performance thermoplastics including polyetheretherketone (PEEK) are key biomaterials for load-bearing implants. Plasma treatment of implants surfaces has been shown to chemically activate its surface, which is a prerequisite to achieve proper cell attachment. Oxygen plasma treatment of PEEK films result…