Materials Literature
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Polymeric nanoparticles containing an oily core, named nanocapsules (NCs), have been widely studied in the life sciences field due to their therapeutic potentialities of drug targeting in the body accompanied also by its larger stability in the biological fluids compared to other colloidal carriers. Many studies have…
For the investigation of the statistical growth behavior of diamond nanoparticles in vapor phase, a direct mass distribution determination was performed using laser ablation/ionization mass spectrometry. Different types of samples were investigated: cosmic diamonds of presolar origin found in meteorites, and larger sy…
Abstract This contribution reports on a FT‐IR study of the hydrogen bonding interactions within blends of different ratios of poly(styrene‐ co ‐methacrylic acid) containing 15 mol% of methacrylic acid PSMA‐15 and poly(styrene‐ co ‐4‐vinylpyridine) containing 15 mol% of 4‐vinylpyridine PS4VP‐15. Equilibrium constants d…
This paper employs the molecular-dynamics method to generate random-dot patterns for light guides designed for backlight systems. The proposed approach combines various numerical techniques and is designed to optimize the dot-density distribution in order to satisfy the uniform luminance requirements demanded by liqui…
Abstract Poly(vinyl alcohol) (PVA) nanofibres were obtained by electrospinning of PVA/water solutions. Formation of beaded fibres combined with decreased fibre diameters was observed for low PVA concentrations. Electrospinning of blends of PVA of different molecular weight resulted in less bead formation and smaller f…
Dual beam pulsed laser deposition was used to synthesize Zn1−xCoxO thin films with a large range of Co concentrations. In this paper, the influence of growth temperature on the crystal structures, magnetic properties, and semiconductor properties of these films was studied. It was found that the growth temperature has…
We fabricated gated field emitter arrays with a novel focusing structure of electron beams, where the focusing electrode concentrically surrounded each gate hole. Carbon nanotube emitters were screen printed inside an amorphous-Si concave well far below the gate. It was theoretically and experimentally verified that t…
N‐vinylimidazole (VIM), and phenacyl methacrylate (PAMA) copolymerized with different feed ratios using 1,4‐dioxane as a solvent and α,α'‐azobisisobutyronitrile (AIBN) as an initiator at 60°C. Structure and composition of copolymers for a wide range of monomer feed were determined by elemental analysis (content of N f…
The contamination of underground water with inorganic arsenic compounds has caused serious problems, particularly in developing countries. For water containing low-level arsenic compounds, an adsorption process may be more effective than other processes such as RO membrane and precipitation. In this study, the removal…
Article Salts in Porous Materials: Thermodynamics of Phase Transitions, Modeling and Preventive Conservation / Salze in porösen Materialien: Thermodynamische Analyse von Phasenübergängen, Modellierung und passive Konservierung was published on December 1, 2005 in the journal Restoration of Buildings and Monuments (vol…
Abstract The interfacial characteristics between bioactive glass (45S5 Bioglass ® ) surfaces and poly(α-hydroxyacid) melts have been assessed by direct wetting measurements. In particular, the wettability of Bioglass ® powder by poly(D,Llactide) (PDLLA) and poly(D,L-lactide -co- glycolide) (PLGA) was assessed by imbib…
Spectroscopic properties and the gain of the 1.6μm emission in selenide and chalcohalide glasses doped with Ho3+ were investigated. Intense 1.6μm emission with high quantum efficiency was observed from both glasses. Tb3+ ions were codoped to depopulate the Ho3+:I75 level and resulted in the population inversion betwee…
Textural and energetic proprieties of kaolinite were studied by low-pressure argon adsorption at 77 K. The heterogeneity of four kaolinites (two low-defect and two high-defect samples) modified on their surface by cation exchange with Li+, Na+, or K+ was studied by DIS analysis of the derivative argon adsorption isoth…
Abstract This work shows the nature of nucleation and growth of M7C3 carbides in high-chromium white irons during eutectic solidification using scanning electron microscopy. Different chemical comp...
The 5,10,15,20-tetrakis(4-sulfophenyl)porphyrin (TPPS 4 ) and 5-phenyl-10,15,20-tris(4-sulfophenyl)porphyrin (TPPS 3 )] were obtained for the first time as the pure sulfonic acid derivatives and characterized for their constitutional structure in the solid state and in water solution. The zwitterionic species in water…
Three kinds of artificial composite material are considered: left-handed materials (LHMs) with both negative permittivity and permeability, negative dielectric permittivity materials (NDPMs), and negative magnetic permeability materials (NMPMs). We study the properties of surface plasmon polaritons (SPPs) for both p a…
Recycling of magnesium alloys produces scrap metal with high contents of copper, nickel and silicon. These impurities are not to be removed by remelting. The products thus have corrosion rates which lie well above those of high purity magnesium alloys. The aim is improving the corrosion properties of contaminated allo…
Seasonal fouling by diatoms was studied in the heavily polluted and eutrofied area near Piran in the Gulf of Trieste.Concrete plates (50 x 50 cm) were placed at l m, 3 m and 7 m depths, with the fouling observed monthly for one year, from March to October.Two plates were used at each level: one was scratched clean mon…
The Apteranthes europaea complex (Apocynaceae–Asclepiadoideae–Ceropegieae–Stapeliinae) distributed from Morocco/southern Spain along the North African coast of the Mediterranean Sea up to Sinai, Negev and southern Jordan is studied with emphasis on stem and flower morphology by SEM, chromosome sizes and flavonoid comp…
Superlattice thin films of the perovskite-type oxide proton conductor SrZr 0.95 Y 0.05 O 3 /SrTiO 3 was fabricated by pulsed laser deposition. Their structural and proton transport properties were reported. X-ray diffraction analysis and selected area electron diffraction revealed that the thin films were epitaxially…