Materials Literature
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Biodegradable polymeric materials with antimicrobial surfaces could be a suitable alternative for production of medical devices, especially if they are prepared in form of composites containing functional matter. Their greatest advantage is that they do not need to be removed from patient's body and simultaneously the…
The positive (resp., negative) inertia index of a graph G, denoted by p(G) (resp., n(G)), is defined to be the number of positive (resp., negative) eigenvalues of its adjacency matrix. A simple result shows that 1≤d(G)≤2p(G) and 1≤d(G)≤2n(G), where d(G) is the diameter of G. In this paper we determine the sufficient a…
Corrosion inhibition characteristics of aspartic acid on mild steel corrosion in 0.5 M H2SO4 was investigated using weight loss, acidimetry, and electrochemical impedance spectroscopy (EIS). Analysis of the metal surface morphology, uninhibited and inhibited, was carried out through scanned electron microscope. The re…
with a typical pseudocapacitive behavior, indicative of a highly suitable supercapacitor electrode material.
The reliability of power system has to be assured as it is going to meet a persistent solicit of power consumption. In this scenario, the present power transmission systems should be upgraded to high power transmission capacities without compromising the reliability which is mainly affected by the failure of insulatio…
The Phase Gradient Metasurface (PGMS) is widely used in the flexible control of electromagnetic wave and the improvement of antenna gain. In this paper, a novel type of small-sized metasurface unit cell is designed, and the unit element adopts tri-layer metal and two-layer intermediate medium. Each layer of metal cons…
This paper is concerned with the surface stability of a bubble in a liquid, fully covered by an elastic solid, which is common in natural and engineering applications. A theoretical model is described for the phenomenon, assuming that the bubble gas undergoes a polytropic process, the flow is irrotational, and the var…
Nanotechnology, today, characterizes medicine and food industry. It covers various aspects of food sector like fermentation, neutraceuticals but a greater influence has been observed in the sector of food safety. Nanoemulsions are being used in various fortification purposes such as calcium and rice bran oil. Nanotech…
In this paper, we report the analysis of Mixed Carbon nanotube bundle (MCB) as potential interconnects in the sub-threshold regime. MCBs with specific and random arrangement of non-identical MWCNT diameters are proposed. The sub-threshold crosstalk delay has been obtained analytically for different MCB arrangements an…
Abstract Experimental studies on the solubility, density and refractive index in the ternary system (Na2B4O7 + Mg2B6O11 + H2O) at 308.15 K were determined with the method of isothermal dissolution equilibrium. Based on the experimental results, the phase diagram and its corresponding physicochemical properties versus…
We present a new multi-domain model for polarization switching in ferroelectric materials. The computationally efficient model captures the time evolution of multi-domain ferroelectrics with good accuracy along with the frequency dependent switching behavior. We have fabricated (PVDF) and measured P-E characteristics…
Abstract The temperature evolution of the Ga94In6 liquid alloy introduced into an opal matrix has been studied by the NMR method in the temperature range 300–155 K. The temperature dependences of the position and the intensity of the NMR signals from 71Ga, 69Ga, and 115In isotopes have been measured upon cooling and h…
ABSTRACT The European Commission CAST project (CArbon-14 Source Term) aimed to develop understanding of the potential release mechanisms of carbon-14 (radiocarbon, 14C) from radioactive waste materials under conditions relevant to waste packaging and disposal to underground geological disposal facilities. The project…
Inductance characteristics play an important role in the output torque of the switched reluctance motor (SRM) whereas the windings connection form affects the mutual coupling between phases. According to the magnetic polarity models, dual-channel switched reluctance machine (DCSRM) with NNNSSSNNNSSS winding polarity i…
Abstract This work highlights some physical properties related to the influence of aluminum, tin and copper incorporation on nanostructured zinc oxide (ZnO:M; M:Al, Sn and Cu) thin films prepared by ultrasonic spray pyrolysis technique (USP) on glass substrate at 350±5 °C. For the as-grown layers, M- to Zn-ratio was f…
The ultrafast photoisomerization and excited-state dynamics of trans-4-methoxyazobenzene (trans-4-MAB) in solutions were investigated by femtosecond transient absorption spectroscopy and quantum chemistry calculations. After being excited to the S2 state, the two-dimensional transient absorptions spectra show that cis…
Abstract We demonstrate that the efficiency under ambient conditions of optically active molecules encapsulated in polymer nanocapsules can be significantly improved by depositing an inorganic layer onto the polymeric shell. A triplet‐triplet annihilation upconversion (TTA‐UC) system consisting of a porphyrin derivati…
The authors studied the present status of Hungarian indigenous sheep breeds based on the genetic background of scrapie resistance. The aim of this investigation was to estimate the relative frequency of prion haplotypes, genotypes and risk categories, as well as to reveal the efficiency of the scrapie eradication prog…
Abstract MOF-199 was synthesized in two ways: mechanochemical and microwave activation. The synthesized materials were characterized by X-ray diffraction and the Klyachko–Gurvich technique of measuring their specific surface areas. Rotational spectra were modeled for compounds representing the most important ligands i…
ABSTRACT The widespread application of nanoparticles (NPs) in commercial and industrial products inevitably increases their release into the natural environment which may do harm to human health and cause many environmental problems. The nanoparticles in wastewater treatment systems showed that most NPs are retained i…