Materials Literature
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A generalized analytical formulation for analyzing the Goos-Hänchen (GH) lateral shift direction is provided, from which we show that the phenomenon of both positive and negative GH shifts at different incident angles can be observed with left-handed material (LHM) slabs. The formulation also reveals that this unique…
Abstract Summary: Polyurethane nano‐ and microparticles were synthesized by suspension‐polyaddition technique, using aqueous polymerization medium. Castor oil, a vegetable triglyceride possessing hydroxyl groups was used as natural polyol and methylene diphenyl diisocyanate (MDI) as isocyanate. The levofloxacin, an an…
Summary Within the scope of the OECD Nuclear Energy Agency (NEA) Thermochemical Data Base Project (TDB) a comprehensive review of selected organic ligands has been carried out by the authors. The selected ligands are oxalate, citrate, ethylenediaminetetraacetate (edta) and α-isosaccharinate (isa), and the elements con…
This paper presents some results of experimental research addressing the influence of magnetic field dynamics on the copper‐constantan thermocouple performance. There are challenges in measuring temperature by thermocouples in a time‐dependent magnetic field. Although there is considerable experience on the effect of…
BiFeO3 (BFO) thin films were fabricated by depositing sol-gel solutions on Pt/Ti/SiO2/Si (100) structures. The crystalline BFO phase was observed after 5-min- and 15-min-annealing for films formed using stoichemistric and 5% Bi-excess sol-gel solutions, respectively. Only Bi2Fe4O9 were observed as the secondary phase…
The ability of some additives to increase the efficiency of polyethylene (PE) cross-linking is studied. The results confirm that additives are effective especially at low doses. Formulations of radiation cross-linked PE foam are used, and optimum conditions for the foaming process to prepare desirable final products a…
Single crystalline ZnO nanowires (NWs) with diameters ranging from 80 to 700 nm were successfully grown on Ni-coated SiO 2 /Si(100) substrates by atmospheric pressure chemical vapor deposition (CVD) using ZnCl 2 and H 2 O as source materials. Scanning electron microscope (SEM) and transmission electron microscope (TEM…
<div class="htmlview paragraph">Regulatory authorities are actively revising and updating the rules for on board diagnostics of diesel powertrains. Diesel oxidation catalysts are among the parts that will have to be monitored. This paper discusses some of the issues related to the feasibility of monitoring these…
Surface-enhanced Raman spectra (SERS) of molecules separated by gas chromatography (GC) were measured off-line by condensing the analyte on a moving, liquid-nitrogen-cooled ZnSe window on which a 5 nm layer of silver had been formed by physical vapor deposition. After the components that eluted from the chromatograph…
We present the results of molecular dynamics (MD) simulations of bead‐and‐spring models of associating polymers at melt‐like densities. Specifically, we consider telechelic (i.e., end‐functionalized) polymers of general formula AB n A, where the A terminals tend to associate with each other and the spacer chains have…
Deposits of the Fe-6.5wt%Si alloy produced by spray forming were annealed at temperatures between 900 and 1300oC, during 1h in vacuum and quenched in oil at temperatures between 300 and 700oC, separately. Magnetic properties, singular microstructure and random crystallographic texture were measured. After annealing at…
Abstract The effects of leather powders, chrome tanned leather powders and keratin were studied on properties of the synthetic isoprene rubber IR and the microbiological decomposition of the resulting proteinous-elastomeric composites. The proteins were obtained from the waste of the leather industry. The incorporatio…
A continuous 2-step aerosol process is described for the generation of SiO2 supported palladium (Pd/SiO 2 ) catalyst particles from metal-organic (MO) precursors. In a first flow reactor, submicron SiO 2 support particles are generated by chemical vapor synthesis (CVS) from TEOS [tetraethyl(ortho)silicate]. These sili…
A mathematical model based on computational fluid dynamics has been developed to investigate the airflow and heat transfer through fibrous webs. The model is based on the porous media concept and involves solving equations for continuity, momentum, and energy. A thermal energy equation is developed, which incorporates…
Different aspects of heat and water transfer through textiles are reviewed in this paper. The study illustrates the impact of the heat transfer process on the moisture transfer processes, including moisture transfer by water diffusion, liquid capillary action, and moisture sorption of the fibres. It is also concluded…
The effects of oxygen plasma posttreatment (PPT) on the morphology and field emission properties of carbon nanotube (CNT) arrays grown on silicon substrates are proposed and experimental results are reported. Oxygen PPT led to an enhancement in the emission properties of CNTs, which showed an increase in total emissio…
Hannaea superiorensis sp. nov. is formally described from benthic and tychoplanktonic locations in the North American (Laurentian) Great Lakes, primarily from Lake Superior. This taxon has previously been reported as Ceratoneis arcus (Ehrenb.) Kütz., Hannaea arcus (Ehrenberg) Patrick or Hannaea arcus var. linearis (Ho…
The implementation of immersion lithography requires a sophisticated fluid management system. The design of the fluid management system must simultaneously consider liquid heating, viscous shear, normal forces, air entrainment, and the control of the liquid/air interfaces. In particular, it is becoming clear that the…
The crystal symmetries of lead hafnate titanate (Pb(HfxTi1-x)O3, PHT) powders with 0.10<or=x<or=0.50 were investigated by high-resolution neutron powder diffraction. Samples with x<or=0.40 were tetragonal (space group P4 mm), while the sample with x=0.50 contained both monoclinic Cm and rhombohedral (modeled using the…
Abstract 4,4′‐Oxydiphthalic anhydride (1) was reacted with L ‐leucine (2) in acetic acid and the resulting N , N ′‐(4,4′‐oxydiphthaloyl)‐bis‐ L ‐leucine diacid (4) was obtained in high yield. The direct polycondensation reaction of this diacid with several aromatic diols such as bisphenol A (5a), phenolphthalein (5b),…