Materials Literature
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Using the method of differential subordination, we investigate inclusion relationships among certain subclasses of analytic and p-valent functions, which are defined here by means of the Liu-Owa operator Qptp.
Clustering of particles in granular-fluid systems has been known to exist for some time. Wilhelm and Kwauk [1] were among the first to show evidence of particle clustering in fluidized beds with others following suit with similar experiments [2-10]. Kaye and Boardman [10] suggested that particle clustering is signific…
The electronic structures and optical properties of single-walled Ga-rich zigzag In x Ga 1− x N nanotubes (NTs) are investigated using first-principles calculations. We find that In atoms substitute Ga atoms randomly in In x Ga 1− x N NTs, in which some typical In−N clusters, chains, and rings are embedded by chance.…
Electron paramagnetic resonance (EPR) and electron spin echo (ESE) at X-band and at high-frequency W-band (95 GHz) have been used to study natural diamond nanocrystals, detonation nanodiamond (ND) with a size of ∼ 4.5 nm and detonation ND after high-temperature, high-pressure sintering with a size of ∼ 8.5 nm. Isolate…
A defect chemical model for the behavior of acceptor and donor-doped LaFeO3 as a function of oxygen pressure is proposed. The nonstoichiometric deviation is calculated as a function of oxygen partial pressure, pO2, at different temperatures. The defect structure of complex oxides is described within the point defects…
Composites materials comprising carbon nanotubes (CNTs) embedded in a teflon polymer matrix are synthesized. The diameter and length of the CNTs are 8–10 nm and up to 150 nm, respectively. The SEM technique is used to characterize the morphology of the composites. The electrical properties are studied by recording the…
The Low Energy Particle Toroidal Accumulator (LEPTA), a positron storage ring with electron cooling, was constructed and put in operation at the Joint Institute for Nuclear Research (Dubna). The storage ring is a generator of directed beams of ortho -positronium ( o -Ps) produced upon the recombination of the beam of…
Interstitial free(IF) steel sheet has been widely used in automotive industry for its excellent deep drawabilities,which are most strongly influenced by textures formed after annealing. It is well known that the conventional annealing texture of IF steel consists of partialαfiber texture (110//rolling direction,RD) an…
Influence of repeated mechanical stresses/strains on AC losses (transport current losses and magnetization losses) in two kinds of multi-filamentary Bi2223/Ag-sheathed wires (twisted and non-twisted) for AC power cables was experimentally investigated. Repeated uni-axial tensile stresses/strains were applied to the wi…
The preparation and physico-chemical evaluation of rifam-picinloaded poly-(lactic-co-glycolic) acid (PLGA) nanoparticles as per 32 Factorial Design are presented. PLGA (X1) and PVA (Polyvinyl alcohol) solution (X2) as a stabilizing agent were used as independent variables where Particle size (PS) (Y1), Entrapment Effi…
We made small superconducting coils and measured the total AC loss under the AC and DC external magnetic fields. The coil winding conditions are that 1, 5, and 10 N of the winding tensions and bobbin materials are glass fiber reinforced plastic (GFRP) and Dyneema fiber reinforced plastic (DFRP). The GFRP and the DFRP…
Conductive nanoporous polymers with interconnected large surface area have been prepared by depositing polypyrrole onto nanocavity walls of nanoporous 1,2-polybutadiene films with gyroid morphology. Vapor phase polymerization of pyrrole was used to generate ultrathin films and prevent pore blocking. The resulting nano…
To date, studies on the degradation of gas-phase pollutants by fin-installed photocatalytic reactors are limited. The present study investigated continuous-flow annular photocatalytic reactors installed with fins for efficient removal of four gaseous monocyclic aromatic compounds using two different photocatalysts (un…
Abstract In this study, the effects of gamma radiation on properties of ethylene–propylene–diene monomer (EPDM) and its blends with phenyl vinyl methyl silicon rubber (PVMQ) were studied. The samples were irradiated with the dose rate of 171.7 Gy/min, and the total dose was up to 500 kGy. Mechanical properties, electr…
Abstract Ultraviolet irradiation, which is environment friendly and without any chemical pollution, was used to functionalize high‐density polyethylene (HDPE) and to improve the interfacial interaction of its composites with sericite in this study. The oxygen‐containing groups of CO, C‐O, and C(O)O were quickly intr…
We report on the electrocatalytic reduction of hydrogen peroxide at nanoporous gold (NPG) surfaces. Various NPG surfaces with different surface structure were prepared by changing the conditions of electrodeposition for Ag-Au layers such as the concentration ratios of $KAu(CN)_2$ over $KAg(CN)_2$ and deposition charge…
A solid-state fluorescence host complex was prepared by assembly of a two-dimensional (2D) layered hydrogen- and ionic-bonded network structure composed of 2-naphthylethylamine and 2,6-naphthalenedicarboxylic acid. In this complex, the MeOH guest molecules are one-dimensionally trapped in channel-like cavities formed…
Hardness (H) and elastic modulus (E )o f 1μm thick Cu film deposited on Si substrate were measured by means of nanoindentation technique. The E value of Cu film obtained by using single stiffness measurement (SSM) is consistent with that obtained from continuous stiffness measurement (CSM). However, the H value obtain…
The catalytic performance of poly (N-vinyl-2-pyrrolidone)-stabilized platinum colloidal nanoparticles (PVP–Pt) in the hydrogenation of chlorobenzene were studied. The nanocatalysts were prepared by varying preparation conditions. The average diameters and the standard deviations of PVP–Pt colloidal nanoparticles were…
IPN 구조를 가지는 감습성 고분자 전해질로 사용하기 위하여 디브로모알칸과 가교가 가능한 copoly(2-(dimethylamino)ethyl methacrylate) (DAEMA)/butyl acrylate (BA)와 광가교가 가능한 copoly(methyl methacrylate)(MMA)/BA/2-(cinnamoyloxy)ethyl methacryate(CEMA)를 제조하였다. 전극의 기재 표면에 광조사에 의한 IPN-감습성 전해질의 부착을 위하여 3-(triethoxysilyl)propyl cinnamate(TESPC)을 전극표면에 처리하였다. IPN 구조의…