Materials Literature
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A mathematical model, termed the Slug Loss Model, has been developed for describing thermal capacitance (slug) calorimeter behavior when heat losses and other decaying processes are not negligible. This model results in the temperature time slope taking the mathematical form of exponential decay. When data is found to…
In this study the normality of the cotton fiber length number distribution and weight distribution are tested by using the Chi-2 statistic test. Good correlations between the cotton fiber length distribution by weight and the normal distribution with the same mean and standard deviation are obtained. This test further…
Adsorption and reaction of CO on two possible terminations of SrTiO 3 (100) surface are investigated by the first-principles calculation of plane wave ultrasoft pseudopotential based on the density function theory The adsorption energy, Mulliken population analysis, density of states (DOS) and electronic density diffe…
Abstract In the present study, the surface and cross‐section microstructures of the corrosion films were investigated by SEM and the corrosion rate was measured by mass loss at the various conditions associated with the main influencing factors such as temperature, CO 2 partial pressure, and flow velocity. The results…
This paper reports on luminescence studies of lithium borate Li 6 Gd(BO 3 ) 3 doped with Eu 3+ and Ce 3+ and Li 6 Eu(BO 3 ) 3 crystals upon selective excitation by synchronous radiation in the pump energy region 3.7–27 eV at temperatures of 10 and 290 K. The effective energy transfer between the rare-earth ions Gd 3+…
Aluminum offers the ideal prerequisites for recycling that is economically and ecologically sound. Aluminum is readily recycled without any loss of quality and hence scrap aluminum has significant value. Aluminum beverage cans is the most recycled packaging material because of the high value of the scrap and ease of c…
Abstract The performances and properties of the fine hairs from the coats of several domestic and wild mammals, namely the "speciality animal fibres" used for manufacturing high quality, luxury textiles, are influenced by the domestication process, heritability, hybridisation, nutrition, and life environment. In this…
Silica-based hybrid organic–inorganic (O/I) materials prepared by sol–gel chemistry exhibit unique chemical and physical properties. (3-glycidoxypropyl)trimethoxysilane (GPTMS)-based networks represent an archetype of this class of substances, with a vast range of applications. In the present study, a new computationa…
A study on the development of deterioration / performance evaluation method for outdoor electric insulation of polymer materials is pushed forward now in the International Council on Large Electric Systems (CIGRE). The small scale docimasy (Dynamic Drop Test) which could evaluate a disappearance characteristic of the…
The aim of this paper is electromagnetic testing of innovative shielding textiles in the frequency range from 30 MHz up to 1300 MHz. These new materials were obtained using plasma metallization process. The metallic film was deposited by magnetron sputtering in argon atmosphere from Zn-target on the polypropylene (PP)…
Mesoporous Ce1 − x Fe x O2 mixed oxide catalysts of different molar ratios (x = 0.1–0.5) were prepared by the citric acid sol-gel method and the microwave technique. The activities of Ce1 − x Fe x O2 mixed oxides on methane combustion were investigated, and the structure and reductive properties were characterized by…
Effect of Interface Structure on Electrical Properties of (Ba,Sr)TiO3 Thin Films on Glazed Alumina Substrate, Nozaka, Takashi, Mizutani, Yoji, Gun, Bhakdisongkhram, Echizen, Masahiro, Nishida, Takashi, Takeda, Hiroaki, Uchiyama, Kiyoshi, Shiosaki, Tadashi
Abstract The effect of oil swelling on the fatigue life of ethylene propylene diene monomer rubber (EPDM) has been studied under conditions of equi-biaxial cycling using dynamic bubble inflation. Specimens were subjected to varying degrees of swelling in reference mineral oils and fatigued at constant engineering stre…
A new structure for the surface illuminant X-ray source system using a low-cost aluminum-doped zinc oxide (ZnO:Al) whisker cold emitter is proposed and a prototype setup is introduced. The X-ray source was fabricated using a cold cathode that consists of an aggregation of conductive ZnO:Al whiskers. The ZnO:Al whisker…
The switching dynamics and switching time of ferroelectric nanomesas grown from the paraelectric phase of ultrathin Langmuir–Blodgett vinylidene fluoride and trifluoroethylene copolymer films are investigated. Ferroelectric nanomesas are created through heat treatment and self-organization and have an average height o…
The optical absorption spectra of single crystals of neodymium and samarium chromium borates are studied. A magnetic phase transition in NdCr3(BO3)4 (at T c = 8 ± 1 K) and SmCr3(BO3)4 (at T c = 5 ± 1 K) is observed. The effective magnetic field acting on the Nd3+ ion from the side of the ordered magnetic subsystem of…
We describe the design, fabrication and testing of broadband negative permeability and broadband negative-refractive-index (NRI) metamaterials. The NRI metamaterial is designed to address two major limitations of current NRI media: high loss and narrow bandwidth of operation. The proposed NRI design has a backward-wav…
The nanostructural hydrogenated graphite (CnanoHx) was synthesized from graphite by ball milling under hydrogen (H2) atmosphere. In this product, characteristic hydrogenated states in the form of polarized hydrocarbon groups (CH, CH2, and CH3) are realized in the nanoscale. By synthesizing the composite of CnanoHx…
The evolution of the electric field amplitude (V0) dependent scaling of dynamic hysteresis area (A∝V0α) with the temperature in Mn doped (Pb,Sr)TiO3 film was analyzed. α exhibited different values under three temperature regions, where (1) the intrinsic ferroelectric domain nucleation, growth, and reversal, (2) the co…
The effect of metallic oxide in the intumescent flame retardant (IFR) polypropylene (PP) composites containing melamine phosphate (MP) and pentaerythritol (PER) is studied. The flammability of the composites was characterised by limiting oxygen index (LOI), UL-94 and cone calorimeter tests. It is found that, in the ca…