Materials Literature
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Nitrogen-doped carbon nanotubes (N-CNTs) were synthesized using air as the nitrogen carrier gas and CH4 as the carbon source by plasma-enhanced chemical vapor deposition over a thin catalyst film of Fe50Ni50. Transmission electron microscopy and high resolution transmission electron microscopy measurements have indica…
An optical fiber pressure sensor based on Fabry-Perot interference has been proposed in this paper. The sensor's outside diameter is only 1.8 mm. Chemical etching, laser bonding and epoxy-fixed are required in the sensor fabrication process. Different pressure sensitivities can be obtained with different diaphragm thi…
Abstract The reaction of Ni and Al particles may induce the formation of nickel aluminide intermetallics. However, the imcomplete reaction can produce very fine Ni particles, which are dispersed in a porous Ni3Al skeleton. The composite foam structure can then be used in the synthesis of carbon nanotubes (CNTs) at hig…
Unusual magnetic properties of nanocrystalline orthoferrite, GdFeO3 , synthesize by conventional solid state reaction (SSR) route based on stoichiometric mixing of Fe2O3 and Gd2O3 is reported here. The structural characterization of these nanoparticles was carried out by using X-ray diffraction (XRD) and high resoluti…
In this paper, calcium phosphate cement (CPC) was prepared with tetracalcium phosphate (TTCP)/dicalcium phosphate anhydrous (DCPA) system as solid phase and phosphate buffered solution (PBS) as liquid phase, then silk fibroin (SF) was added into CPC to form silk fibroin/calcium phosphate composite. To study the effect…
A low cost, high reliability pendulum impact device is designed and set up with a gas generator and inflator, and a real deploy test is conducted with 45L drive airbags made of Nylon 66. The interaction between the dummy pendulum and the airbag in this simulation is recorded to observe and study the impact and injury…
The carrying capacity of a soldered joint with a brace on one side is investigated; the eccentric longitudinal tensile force is taken into account.
The bacterial histidine autokinase CheA contains a histidine phosphotransfer (Hpt) domain that accepts a phosphate from the catalytic domain and donates the phosphate to either target response regulator protein, CheY or CheB. The Hpt domain forms a helix-bundle structure with a conserved four-helix bundle motif and a…
A new model to study the gas detection mechanism of carbon nanotube (CNT) based ionization gas sensor has been developed. The model incorporates electron field emission property of the CNTs. The CNT density and aspect ratio variations which are major factors involved in the field emission are also included. The CNT fi…
The Al-40Si alloy modified by 0.5 wt% Sr addition was heat treated using L9(34) orthogonal test. The mechanical properties were measured. The microstructures were analyzed using optical microscope. After heat treatment, the extension percentage increases more than twice. The eutectic matrix and primary Si phase are bo…
1-Butyl-3-methylimidazolium chloride ([BMIM]Cl) was applied as solvent to dissolve the cellulose diacetate (CDA) directly. The solution rheology of CDA in [BMIM]Cl was investigated by steady shear and oscillatory shear measurements. In the range of the concentration and temperature studied, CDA/[BMIM]Cl solutions show…
The combination of diamond-like carbon (DLC) coatings and fluid lubrication is an efficacious method to improve the performance and service life of the friction-pairs working under the severe conditions, but the synergistic effect of DLC coatings and lubricant additives have not been clearly unveiled. The synergistic…
NOx removal from flue gases by selective non-catalytic reduction (SNCR) was investigated with special attention paid to combined dioxin destruction in waste incineration plants. For the SNCR technology, ammonia (NH3) and urea-based reductants are widely adopted, and the important factors affecting De-NOx efficency ass…
The microgels with semi-interpenetrating polymer network (semi-IPN) structure based on cross-linked poly(N-isopropylacrylamide) (PNIPAM) and linear poly(acrylic acid) (PAA) were fabricated by one-step precipitation polymerization technique. The chemical composition of the microgels was determined by Fourier transforma…
Monomers of the fd bacteriophage major coat protein, g8p, interact to form a helical bent-core structure surrounding the viral deoxyribonucleic acid (DNA). It was hypothesised that g8p has mesophasic characteristics guiding viral coat assembly. Atomic force and scanning electron microscopy reveal that g8p monomers org…
40 wt. %WC steel-bonded carbides were prepared by microwave sintering. The sintering behavior and mechanical properties of 40 wt. %WC-Fe were investigated in comparison with 0 wt. %WC-Fe. The green compact of 40 wt. %WC-Fe sintered at 1280 °C, the phase transition between WC and Fe is observed, generating new Fe2W2C p…
The results of the investigation of amorphous a-SiC x N y films of various compositions by the ultra-soft X-ray emission spectroscopy are presented. The Si L 2, 3, C K α, and N K α emission spectra, which reflect the partial densities of states Si 3s3d, C 2p, and N 2p, respectively, have been measured and analyzed. It…
Combustion of metallothermic mixtures FeO-Cr 2 O 3 -Al-C in air at normal conditions was studied upon variation in the size of carbon (graphite) particles and carbon localization in a green sample. Carburization conditions were optimized in terms of graphite particle size.
Due to its suitable band gap, low cost, environmental friendliness, and high electron mobility, ZnO, naturally n-type semiconductor with a wide bandgap (Eg = 3.37 eV), is widely studied, as a window layer of heterojunction solar cells. In this study, the ZnO nanowire arrays were grown on the different ZnO seed layers…
In this paper two low-cost microprocessors are employed to build up a internet-based instrument system for remote monitoring of power quality, the instrument system can collect various types of power quality disturbances in interactive or automatic mode. Besides, an SD data storage device is used to save raw data whic…