Materials Literature
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<TEX>$Mn_xFe_{3-x}O_4$</TEX> powders have been fabricated by using sol-gel methods; their crystallographic and magnetic properties were investigated by using X-ray diffraction, scanning electron microscopy, M<TEX>$\ddot{o}$</TEX>ssbauer spectroscopy, and vibrating sample magnetometer. The <TEX>$Mn_xFe_{3-x}O_4$</TEX>…
Gold and palladium nanoparticles as well as bimetallic AucorePdshell and PdcoreAushell nanoparticles were synthesized at 25 � C from aqueous solutions of Au(III) and Pd(II) species using ascorbic acid as reducing agent. The optical properties of these nanoparticles were assessed by UV-Vis absorption spectroscopy. Gold…
The crystal structures of three analogs of trans-DPDSB (2,5-diphenyl-1,4-distyrylbenzene with two trans double bonds) are very similar to that of rubrene, which have face-to-face molecular packing mode with relative displacement along the molecular long axis. The very strong intermolecular π-π interactions enable the…
Thymus plant is well known as medicinal plants because of their biological and pharmacological properties. In recent years, some effects of nano-silver solution on some of the plants have been studied. This study investigated the effect of different levels of nano-silver on some of the plant growth profiles and essent…
The partial degumming of silk has recently attracted researchers’ attention because of its ability to produce silk textiles with new tactile properties, intermediate between the softness of fully degummed silk and the hardness of raw silk. However, it is difficult to obtain partially degummed silk in a homogenously de…
In this study, gelatin based biodegradable scaffolds (GS) containing various amounts of epidermal growth factor (EGF) were prepared and applied to full skin defects created on rats in order to investigate the EGF dose effect on healing process. Scaffolds were prepared by freeze drying technique and stabilized with eit…
Electrochromism synchronous to the charge/discharge of a novel Li ion battery having Li 3 Fe 2 (PO 4 ) 3 and Li 4 Ti 5 O 12 thin-film electrodes fabricated by a chemical process, the molecular precursor method, was discovered. A cathode of transparent Li 3 Fe 2 (PO 4 ) 3 thin film with a thickness of 80 nm was fabrica…
The inhibition of the corrosion of mild steel in 1 M H 2 SO 4 solution by the pharmaceutically active compound esomeprazole (ESP) has been investigated by using weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy measurements. The effect of temperature on the corrosion behavior with t…
The synthesis of nanoparticles with desired size and shape is an important area of research in nanotechnology. Use of biological system is an alternative approach to chemical and physical procedures for the synthesis of metal nanoparticles. An efficient environment-friendly approach for the biosynthesis of rapid and s…
The need for lead-free piezoceramics has caused a renewal of interest in BaTiO 3 -based systems. Recently, it was found that ceramics in the (Ba,Ca)(Zr,Ti)O 3 system have properties comparable to those of Pb(Zr,Ti)O 3 . However, these ceramics require rather high sintering temperatures of 1450-1550 C. In this work, th…
This study examined the characteristics and dyeing fastness of sheep skins that had been tanned with two different vegetal tannins: hydrolysable tara and condensed quebracho tannins. After tanning, chitosan formate was applied to the leathers in four different proportions. The dye exhaustion and tensile strengths of t…
This paper proposes a metamaterial (MTM) absorber for 2.45 GHz band applications. The unit cell of the proposed absorber consists of an electric LC (ELC) resonator and a strip line, which are printed on opposite sides of the substrate. The ELC resonator comprises two split ring resonators (SRRs) and a connecting line…
We evaluated a degree of the machine part abrasive wear with secondary focus on their hardness. The paper states laboratory results of overlay systems from their wear resistance point of view. Laboratory experiments were carried out by two-body abrasion on bonded abrasive of a P120 granularity. The results proved an i…
The association of stem cells (SCs) with biomaterials promises to be the protagonist for future regenerative medicine in the treatment of tissue and organ lesions. Stem cells were cultivated in scaffolds constructed by the electrospinning technique, using poly-D,L-lactic acid (PDLLA) associated or not with Spirulina b…
In present study, we put forward an approach to prepare three-layer core-shell Fe3O4@SiO2@Au magnetic nanocomposites via the combination of self-assembling, seed-mediated growing and multi-step chemical reduction. The Fe3O4@SiO2@Au magnetic nanocomposites were analyzed and characterized by transmission electron micros…
Macro porous ceramics possessing controlled microstructures and chemical compositions have increasingly proven useful in the industrial sphere. Their sintered structures have found application in both established and emerging, areas such as thermal insu-lation in buildings, filtration of liquids and molten materials,…
Gallium is an important element in the production of a variety of compound semiconductors for optoelectronic devices. Gallium has a low melting point and is easily oxidized to give oxides of different compositions that depend on the conditions of solutions containing Ga. Gallium electrode reaction is highly irreversib…
The growth dynamics of a single crack in a heterogeneous material under subcritical loading is an intermittent process; and many features of this dynamics have been shown to agree with simple models of thermally activated rupture. In order to better understand the role of material heterogeneities in this process, we s…
Atrial fibrillation (AF) is a highly prevalent arrhythmia with pronounced morbidity and mortality. Inward-rectifier K+ current (IK1) is believed to be an important regulator of reentrant-spiral dynamics and a major component of AF-related electrical remodeling. MicroRNA-26 (miR-26) is predicted to target the gene enco…
Bacillariophyta species composition from two lakes in East Siberia was investigated. In one of them Psammothidium vernadskyi Bukht. et Stanislavskaya sp. nov. was found. The diagnosis, illustrations and other necessary material for the new taxon attributes are provided. Typification of new species and infraspecific ta…