Materials Literature
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Poly(D,L-lactide-co-glycolide) (PLGA, 75/25) microspheres loaded with bovine serum albumin (BSA) were prepared using the W/O/W emulsification solvent evaporation technique. The cytotoxicity in vitro of PLGA microspheres was investigated and the BSA release from PLGA microspheres was also studied. Scanning electron mic…
An effusive molecular beam technique is described to measure alkane dissociative sticking coefficients, S(T(g), T(s); ϑ), on metal surfaces for which the impinging gas temperature, T(g), and surface temperature, T(s), can be independently varied, along with the angle of incidence, ϑ, of the impinging gas. Effusive bea…
Redox and acid base properties of soil humic substances were studied. Phenolic groups predominated over the carboxylic groups. The oxidation capacity of humic acids (HA) show values from 1.7 and 2.2 molc kg-1 at pH 7.0 and pH 9.0, respectively. A relationship between redox activity and both pH and humic acid content o…
Poly-Silicon is widely used in semiconductor devices especially in TFTs technology. Performance of silicon thin film depends on the degree of crystallization. Enhancing the crystalline is the ultimate goal in this annealing process. The best annealing process will be identified. Initially Al doped Si film was prepared…
Alternating dc bias enables eliminating offset in orthogonal fluxgates operated in fundamental mode. However, the alternating dc bias reversals increase the fluxgate magnetic noise. It is shown in this work that the excess magnetic noise is related to the dynamics of the magnetic domains in the fluxgate core. The alte…
Palladium nanoparticles stabilized by Pluronic F68 triblock copolymer effectively catalyzed Suzuki-Miyaura reaction in water. The reactions with water-soluble aryl iodides and aryl bromides containing electron-withdrawing or electron-donating substituent occurred at room temperature. The catalytic efficiency was found…
The effects of Zn, P and Mg additions on the microstructure and mechanical properties of Nb-22Ti-3Si alloys were studied. The phases of Nbss and Nb3Si presented in Nb-22Ti-3Si (AC1), Nb-22Ti-3Si-0.2Zn (AC2) and Nb-22Ti-3Si-0.2Mg alloys (AC3). The Nb-22Ti-3Si-0.2P (AC4) alloy consisted of Nbss, Nb3Si network and eutect…
We consider a numerical solution technique for generalized axisymmetric problems with torsion for elastoplastic bodies of revolution of arbitrary shape under large strains, as well as simple or complex loading, and the conditions of inhomogeneous stress-strain state. The processes of elastoplastic deformation, strain…
The magnetic Compton profiles of Fe–50 at. % Rh intermetallic compound were measured to study the ferromagnetism induced by 200 MeV Xe ion irradiation. The magnetic effect at 50 K increases with increasing the ion-fluence. The analysis of the experimental result revealed that the values of spin moment induced by the i…
The detrimental effects of structural defects, micro-twins (MTs) and threading dislocations (TDs), on electron mobility have been investigated for InSb quantum wells (QWs) at room temperature (RT). The constants that are necessary to calculate the electron-mobility limits of these defects were determined by a least-sq…
Ag/[email protected] plasmonic photocatalyst has been synthesized by a facile method, which exhibits excellent stability for the decomposition of RhB and conveniency in the separation and recovery of the catalyst from the solution.
This manuscript reports on the development of a needle-type sensor for in situ on-site measurement of pH. Conventional pH microelectrode sensors are fabricated by pulling glass pipettes and applying ion-selective films at the tip. However, these sensors suffer from low fabrication yields and short sensor lifetime due…
A research program has been carried out to clarify the effect of stray current corrosion of steel in concrete on the fatigue performance of reinforced concrete under the simultaneous action of environmental corrosion and repeated load. The fatigue damage evolution law of reinforcement was analyzed by continuously moni…
A quantitative model of formation of fixed charge (Q f ) in silicon dioxide during thermal oxidation of silicon is developed. The value of Q f is governed by the number of interstitial silicon atoms in the vicinity of the Si-SiO2 interface; these atoms are formed as a result of the processes of their generation and re…
We study the temperature and magnetic field-dependent photoluminescence from the metalorganic molecules octaethyl-porphine platinum (PtOEP) and porphine platinum (PtP) that are doped into organic hosts. We first consider PtOEP in the polymer host poly-dioctylfluorene (PFO), which is characteristic of the phosphorescen…
Abstract Friction welding of commercially pure titanium to austenitic stainless steel (AISI 304L SS) using intermediate layers was studied. The interlayers used were commercially pure nickel, tantalum and vanadium in the form of thin foils. The interlayers were aimed at avoiding direct contact between the base materia…
The combined effects of section size together with antimony addition on formation of chunky graphite in ductile iron were investigated by characterising graphite morphology, nodule count and size. Results show that the increased casting section size leads to an increase in spheroidal graphite diameter and a decrease i…
The behavior of melts and the phase composition of crystallization products of six compositions in the uranium oxide-zirconium oxide-iron oxide system in air have been investigated. It has been revealed that crystallized samples containing 20–50 wt % uranium oxide and 25–80 wt % iron oxide (the rest is zirconium oxide…
Structure and magnetic properties of melt-spun Nix(Fe0.5Co0.5)73.5−xSi13.5B9Nb3Cu alloys (x = 5,10,15,20,25,30) annealed at different temperatures were investigated. Microstructure has been analyzed from XRD patterns. Magnetic properties were mainly studied by the evolution of initial permeability from room temperatur…
The effect of a benzimidazole derivative (TPBI) electron injection layer (EIL) on the performance of Alq 3 based organic light-emitting devices (OLEDs) with a Cs 2 CO 3 /Al cathode is investigated. An increasing current density from 71.9 mA/cm 2 too 188.3 mA/cm 2 , and an enhanced electroluminescence (EL) efficiency f…