The Examination of the Relationship Between Perceived Parental Acceptance-Rejection and Anger Expression Styles and Depressive Symptoms

Scopu

The extended cubic B-spline algorithm for a modified regularized long wave equation

A collocation method based on an extended cubic B-spline function is introduced for the numerical solution of the modified regularized long wave equation. The accuracy of the method is illustrated by studying the single solitary wave propagation and the interaction of two solitary waves of the modified regularized long wave equation. © 2013 Chinese Physical Society and IOP Publishing Ltd

High conducting nanowires obtained from uniform titanium covered carbon nanotubes

We have shown that Ti atoms can form continuous coating of carbon nanotubes at different amount of coverage. The circular cross section changes to a square-like form, and the semiconducting tube becomes ferromagnetic metal with high quantum ballistic conductance. Metallicity is induced not only by the metal-metal coupling, but also by the band gap closing of SWNT at the corners of the square. The magnetic properties of Ti coated tubes depend strongly on the geometry, amount of Ti coverage and also on the elastic deformation of the tube. While the magnetic moment can be pronounced significantly by the positive axial strain, it can decrease dramatically upon the adsorption of additional Ti atoms to those already covering the nanotube. Besides, electronic structure and spin-polarization near the Fermi level can also be modified by radial strain. Our results have been obtained by the first-principles, spin-relaxed pseudopotential plane wave calculations within the density functional theory. © TÜBİTAK

Magic gold nanotubes

In recent ultra-high-vacuum transmission-electron-microscopy experiments evidence is found for the formation of suspended gold single-wall nanotubes (SWNTs) composed of five helical strands. Similar to carbon nanotubes, the (n,m) notation defines the structure of the gold SWNTs. Experimentally, only the (5,3) tube has been observed to form among several other possible alternatives. Using first-principles calculations we demonstrate that gold atoms can form both freestanding and tip-suspended, chiral, single-wall nanotubes. Although freestanding, infinite (5,5) tube is found to be energetically the most favorable, the experimentally observed (5,3) tube, suspended between two tips, corresponds to a local minimum in the variation of string-tension with the radius of the structure, which explains the experimental finding. Similarly, we predict the (4,3) tube as a favorable structure yet to be observed experimentally. Analysis of band structure, charge density, and quantum ballistic conductance suggests that the current on these nanowires is less chiral than expected, and there is no direct correlation between the numbers of conduction channels and helical strands. © TÜBİTAK

Electrically conductive textile surfaces and their electromagnetic shielding efficiency measurement

In this work a unique design and construction of Electro Magnetic Shielding Efficiency (EMSE) measurement set is introduced and its reliability is discussed within the circumstance of the produced electrical conductive textile surfaces. Electrical conductive yarns, that are contending copper wire, silver and cotton staple fibers, are spun and used for production of plain woven and single jersey knitted specimens. Produced specimens are tested in the designed EMSE measurement set in the frequency range of cellular phone communication bands -between 860MHz-960MHz for 900MHz and 1750MHz -1850MHz for1800MHz- in Turkey. EMSE of the specimens are compared considering yarn components, fabric structure, number of fabric layers, and reference signal power (dBm) based on frequency changes. Considering EMSE values; structure of specimens (woven or knitted), ratio of copper wire in the content of yarn, number of fabric layers, reference dBm value of generated signals are found influential parameters. Thin copper wire containing yarn has higher EMSE comparing those specimens produced using thicker copper wire yarns. Double layer of specimen has better EMSE then the single layer of specimens. Attenuation of specimens can be different for different reference (dBm) levels of generated signals

Theoretical determination of K

In quark model, the strange axial vector mesons K1(1270) and K1(1400) are defined as the mixtures of orbital angular momentum states K1A and K1B. In this work, by using the orthogonality of the mass eigenstates, we have estimated the K1(1270, 1400) mixing angle θK1, where we have found that θK1 sime −(39 ± 4)°

Phthalocyanine-conjugated glyconanoparticles for chemo-photodynamic combination therapy

Combination cancer therapy based on multifunctional nanomaterials has attracted great attention. The present work focuses on the preparation of the glycopolymeric nanoparticle, which contains a photosensitizer (zinc(II)phthalocyanine, ZnPc) and an anticancer drug (Doxorubicin, Dox). First, a novel mono azide-functional ZnPc-N3 with seven hydrophilic ethylene oxide chains was synthesized. Next, ZnPc alone or together with Dox bearing glycopolymers was synthesized via the RAFT polymerization method and then self-assembled into glyconanoparticles (GNPs) with narrow particle size distribution. Then the evaluation of the biological activity of GNPs (GNPs-ZnPc and GNPs-ZnPc/Dox) for dual photodynamic therapy (PDT) and chemotherapy against human breast cancer cells was investigated. The constructed GNPs were identified via general characterization methods, including dynamic light scattering (DLS) and transmission electron microscopy (TEM). The prepared GNPs-ZnPc/Dox demonstrated remarkable photophysical and photochemical properties, involving good colloidal stability in biological conditions, pH-responsive drug release, and the capacity to generate singlet oxygen under light irradiation. The outer layer of nanoparticles covered by fructose sugar moieties achieves a targeted cancer therapy owing to GLUT5 (a well-known fructose transporter) overexpression toward breast cancer cells. In vitro experiments were then performed to evaluate the chemo/phototoxicity, cellular uptake, and anticancer efficacy of GNPs-ZnPc/Dox. In comparison with free Dox, human breast cancer cells treated with GNPs-ZnPc/Dox exhibited a higher cellular internalization via GLUT5 targeting. In particular, the GNPs-ZnPc/Dox nanoplatform revealed an excellent synergistic anticancer activity in comparison with free ZnPc-N3 and free Dox, representing a novel and promising chemo-photodynamic combination therapeutic methodology to improve therapeutic efficacy