Materials Literature
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Cationizations of galactomannan- and xylan-type hemicelluloses were performed in a solid state, with 2,3-epoxypropyltrimethylammonium chloride (ETA) as the cationic reagent under alkaline conditions. By this method, the reaction efficiency was significantly increased for all hemicellulose types, up to 90% in the case…
The upper critical field ${H}_{c2}$ of optimally doped, iron-based superconductor SrFe${}_{2}$(As${}_{1\ensuremath{-}x}$P${}_{x}$)${}_{2}$ ($x$ $=$ 0.35, ${T}_{c}$ $=$ 25 K) was measured as a function of temperature down to 1.6 K for two principal directions of magnetic field $H\ensuremath{\parallel}c$ and $H\ensurema…
Licmosphenia Mereschkowsky is distinguished from Licmophora C.A. Agardh on the basis of a septum with an apical aperture. Nine species have been named; hardly any have been reported since they were first described. Three species that clearly fit Mereschkowsky's generic definition have been found in samples from filame…
The uptake of iron is increased by cancer cells. Iron magnetic nanoparticles (MNP) can be used as a nanovehicle for immobilization of anticancer medicines and to integrate them at a target site. The anticancer medicines doxorubicin (DOX) and methotrexate (MTX) were immobilized separately and in combination onto MNP by…
We theoretically investigate static and dynamic properties of quasiperiodic magnetic multilayers. We considered identical ferromagnetic layers separated by non-magnetic spacers with two different thicknesses chosen based on the Fibonacci sequence. Using parameters for Fe/Cr, the minimum energy was determined and the e…
The detailed nature of conduction in polyaniline nanofibers has been studied as a function of temperature as well as magnetic field. Three batches of nanofibers doped with different levels of hydrochloric acid are synthesized by interfacial polymerization technique with an average diameter of 7.5 nm. The structural st…
Remediation of borate in wastewaters using adsorbents is important from an environmental perspective. Understanding the nature of borate species and their relative abundance is essential in its remediation which varies with the local environment offered by the adsorbent. ZnAl oxide (ZnAl2-Cl CLDH) obtained by calcinat…
Novel heterocyclic aliphatic–aromatic polyamides (PAs) with enhanced flame retardancy, thermal stability, and solubility in organic solvents were synthesized from a polycondensation reaction of 4-aryl-2,6-bis(4-aminophenyl)pyridine 4a-c with adipic acid 5. Diamine monomers 4a-c containing a pyridine ring bearing diffe…
In literature, contacts between pegylated compounds and blood proteins are generally discussed in terms of excluded volume-related repulsions although adsorption and compatibility have been reported for some of these proteins occasionally. The major problem to investigate the behavior of blood in contact with pegylate…
We have studied the pressure-induced physical and chemical transformations of tetracyanoethylene (TCNE or C6N4) in diamond anvil cells using micro-Raman spectroscopy, laser-heating, emission spectroscopy, and synchrotron x-ray diffraction. The results indicate that TCNE in a quasi-hydrostatic condition undergoes a she…
The pitting corrosion behaviour of mild steel in Na 2 HPO 4 solutions contains chloride ion as an aggressive ion and serine and methionine as inhibitors were investigated using open-circuit potential (OCP), potentiodynamic polarization measurements, and pitting corrosion current measurements; both inhibitors shift the…
The Tat (twin-arginine translocation) system is a protein targeting pathway utilized by prokaryotes and chloroplasts. Tat substrates are produced with distinctive N-terminal signal peptides and are translocated as fully folded proteins. In Escherichia coli, Tat-dependent proteins often contain redox cofactors that mus…
The effect of ruthenium on the performance of porphyrin dye and porphyrin–fullerene (PF) dyad solar cells is investigated by using density functional theory and time-dependant density functional theory calculations. The results reveal that ruthenium facilitates rapid electron injection from porphyrin to fullerene, nar…
Poisson and drift-diffusion equations are solved in a three-dimensional device structure to simulate graphene-based vertical field effect transistors (GVFETs). Operation mechanisms of the GVFET with and without punched holes in the graphene source contact are presented and compared. The graphene-channel Schottky barri…
We demonstrated a technique to control the placement of 6 nm-diameter CdSe and 5 nm-diameter CdSe/CdZnS colloidal quantum dots (QDs) through electron-beam lithography. This QD-placement technique resulted in an average of three QDs in each cluster, and 87% of the templated sites were occupied by at least one QD. These…
The gallium analogue of the soluble Prussian blue with the formula KGa[Fe(CN)6]·nH2O is synthesized and structurally characterized. A simple aqueous synthetic procedure for preparing nanoparticles of this novel coordination polymer is reported. The stability, in vitro ion exchange with ferrous ions, cytotoxicity, and…
ABSTRACT The deformation behavior of a polypropylene (PP) sheet, in which c ‐axis of β‐form PP orients perpendicular to the flow direction in the sheet [transverse direction (TD)], is studied focusing on the mechanical anisotropy. The deformation mechanism of this sample is found to be strongly dependent on the stretc…
Today’s photovoltaic solar panels are widely used to supply the power and buildings. The account of total solar cell product in 2010 was about 20 GW. Over 95% of all solar cells pro‐ duced world wide are composed of the silicon (single crystal, polycrystalline, amorphous, ribbon etc.) and domination of silicon-based s…
In the first step of X‐ray photoelectron spectroscopy (XPS) analysis, photoelectron peaks in a survey spectrum for the specimen of interest are generally identified as arising from particular elements and electron energy levels. This peak identification is performed using sophisticated software on commercial XPS instr…
A new ultraviolet (UV)-cured waterborne polyurethane (WPU) mainly composed of ionic soft segments, imide groups, and a new water-soluble UV-cured cross-linking agent containing both C=C bond and carboxy group was prepared. The ionic soft segments were prepared by 1,6-hexamethylene diisocyanate , poly(propylene glycol)…