Materials Literature
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Two experiments were conducted to investigate the role of gelatin sizes in paper permanence. In the first experiment, the acid-base chemistry of paper extracts was studied using titrations to determine gelatin's potential role as a pH buffer. Gelatin was observed throughout this experiment to behave as a pH buffer in…
A thermo dynamic modeling for the Fe-Mg-Si system is conducted. All of the experimental phase diagram and thermodynamic data available from the literature are critically reviewed and assessed using thermo dynamic models for the Gibbs energies of individual phases. The thermodynamic parameters for ternary liquid as wel…
The properties of dried (but not calcined) coprecipitated nickel ceria systems have been investigated in terms of their hydrogen emission characteristics following activation in hydrogen. XRD and BET data obtained on the powders show similarities to calcined ceria but it is likely that the majority of the material pro…
Properties of wood powder pulverized by a vibration were evaluated. In the previous paper, it was clarified that the wood biomass was able to be pulverized into micron order particle by a vibration mill equipped with rods and balls. In this paper, characteristics of wood powder, such as particle diameter, particle sha…
In this study, a fully biodegradable poly(3-hydroxybutyric acid) (PHB) and starch blend (PHB/starch) was prepared by means of a melt-blending method. In addition, the acrylic-acid-grafted PHB (PHB-g-AA) was studied as an alternative to PHB. It was found that the dispersion of starch in the polymer matrix and the water…
ABSTRACT Purpose: Metals such as titanium, vanadium, zirconium, niobium, molybdenum and also tantalum and tungsten must be protected at elevated temperatures from the effects of oxygen, nitrogen and hydrogen. For this reason, it is of interest, both from the innovative and practical points of view, to investigate the…
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This paper analyzes a transient method for the characterization of low-resistance thermal interfaces of microelectronic packages. The transient method can yield additional information about the package not available with traditional static methods at the cost of greater numerical complexity, hardware requirements, and…
By the 1990s, the only way to expand the band width of optical systems was to increase the capacity of transmission systems. But the introduction of wavelength multiplexing (WDM), researchers begun to look into processing signals optically. Thereby, more efforts were devoted to discovering optical materials that could…
The tendency in modern architecture to use glass structurally means that we need to know the engineering properties of glass accurately. The most important of these is the failure strength of glass in bending. Although much work on this has been done and published there are still many questions. These deal mainly with…
This paper investigates the recognition of partial discharge sources by using a statistical learning theory, Support Vector Machine (SVM). SVM provides a new approach to pattern classification and has been proven to be successful in fields such as image identification and face recognition. To apply SVM learning in par…
A series of low-density polyethylene (LDPE) blends with different amounts of poly(ethylene-vinyl acetate) (EVA) was prepared and irradiated with 10 MeV electron beam in the range of 50−380 kGy at room temperature in air. Some electrical properties of the blends such as surface and volume resistance, breakdown voltage,…
The reactions of copper (II) acetate with thiourea, with or without chitosan, are described. The products obtained are CuS and Cu2S in an approximate composition of 1:1. UV-vis, Raman and FTIR spectroscopy as well as EDX analysis confirmed these copper sulfides. The effects of chitosan on the morphology of the copper…
As the total annual production of carbon nanotubes is expected to increase, this highlights an ever-increasing need to have a tool for the detection of nanotubes. By identifying predefined criteria for the detection platform, it is evident that the current general nanoparticle sensing technologies will not meet severa…
Electrical properties of reactively sputtered SiCBN thin films were studied at high temperature conditions. In situ electrical characterization was performed through sheet resistance measurements in the temperature range from room temperature to . The electrical properties were observed to be extremely sensitive with…
The geometries, total energies, and frequencies of GenFe(n=1—8) clusters have been systematically investigated using density functional theory with the generalized gradient approximation, and the equilibrium geometries at different spin multiplicities as well as the ground-state structures have been determined. The ca…
The structural parameters of ε-FeGe have been determined at ambient conditions using single crystal refinement. Powder diffraction has been carried out to determine structural properties and compressibility for pressures up to 30 GPa and temperatures as low as 82 K. The discontinuous change in the pressure dependence…
A novel Co-Sn-O nanoring structure was synthesized via a simple hydrothermal route; the difference in diffusion rates of ions was considered to be the main reason for the formation of such a ring structure.
The paper is the review of microcellular polymer materials (polyolefins, polycarbonates and other thermoplastics) and microcellular composites reinforced with mineral fillers or natural fibers. The effects of type of foamed material, kind of foaming agent used and the foaming process conditions on mechanical propertie…
Red, green, and blue-emitting Li-doped ( , , or ) film phosphors were coated on sapphire substrates using a sol-gel technique in which yttrium nitrate, metal nitrate ( , , or ), lithium carbonate, and citric acid were used as the precursor materials. The effect of annealing temperature on thin films and thick films on…