Materials Literature
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Abstract The miscibility of chitosan and poly(vinyl pyrrolidone) −PVP‐ has been studied by viscosity measurements, differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR). For chitosan/PVP blends in solid state (thin films) interaction were found by FTIR and DSC methods. After blendi…
With surface-relief structures, optical functions that are required for radiation power management such as antireflection, light trapping, or light distribution and redirection can be obtained for new applications in solar energy systems and in displays. There, structures with submicrometer features must be distribute…
This study examines the liquid moisture transfer properties of a selected group of heat-resistant workwear fabrics using a demand wettability test. The Gravimetric Absorbent Testing System procedure is modified and developed to assess the effects of wicking finish treatment and hygroscopic fibers on workwear fabrics.…
Of the laboratory devices available for examining the effects of single-phase fluid flow on corrosion, the rotating cylinder electrode is probably one of the simplest devices to construct and operate under defined hydrodynamics in the turbulent flow regime. This review examines several areas important to the use of th…
A synthesized hyperbranched polymer, which is chemically analogous to PAMAM dendrimers, was used to prepare water “soluble” gold nanoparticles. The open structure of the hyperbranched polymer compared to the dendrimer architecture facilitates the interactions of metal ions (e.g., AuCl4-) with the internal chemical fun…
Abstract The anisotropy in the optical absorption and photoconductivity of thin layers of mesomorphic derivatives of hexa‐ peri ‐hexabenzocoronene (HBC) have been investigated for aligned films prepared via three different methods: deposition on friction‐deposited polytetrafluoroethylene (PTFE), zone‐casting (ZC), and…
Transmission and reflection measurements on polyamide nanocomposite films were performed in the THz frequency region, and the dielectric function was calculated using the Debye model to interpret the data. The relaxation time from the signal of orientation polarization due to the permanent dipole moments exhibits inte…
Feldspar nucleation rate data obtained by laboratory decompression of hydrous silicate melt are interpreted in view of the classical theory of nucleation (CNT) and a non-classical variation, the diffuse- interface theory (DIT). The nucleation rate data can be modeled by the CNT formalism only if the interfacial free e…
This paper gives a finite element model to simulate the entire process of multilayered fabric target perforated by conically cylindrical steel projectile on the basis of the description of the actual structure of fabric considering crimps of warp and weft yarns. Commercially available finite element code Ls-Dyna is in…
The electronic properties of ${\mathrm{FeCl}}_{3}$ intercalated single-wall carbon nanotubes were investigated using high-resolution electron energy-loss spectroscopy in transmission and optical spectroscopy. The lowering of the nanotube Fermi level is directly measured via electronic excitations from C $1s$ to empty…
Volume phase holographic gratings (VPHGs) possess unique properties that make them attractive for numerous applications. After reviewing major VPHG characteristics through theory, we discuss some aspects of the dichromated gelatin recording material and the holographic recording process. The large-scale VPHG research…
Benthic diatom investigations of some Hungarian streams have been carried out in order to find reference sites in assistance to the ecological quality analysis of the different river types according to the Hungarian river typology. On the basis of the coevaluation of biological and chemical parameters, among the inves…
Tumour cell-targeted liposomal delivery has the potential to enhance the therapeutic efficacy and reduce the toxicity of anticancer agents. Folate receptor (FR) expression is frequently amplified among human malignancies. FR is, therefore, potentially useful as a tumour marker for targeted drug delivery. FR-mediated l…
The structural transformation and catalytic properties of metal/polymer nanocomposites derived from hyper-cross-linked polystyrene (HPS) exhibiting both microporosity and macroporosity, and filled with Pt nanoparticles, are investigated in the direct oxidation of l -sorbose to 2-keto- l -gulonic acid. Transmission ele…
We report the spectral refraction analysis and focusing properties of a two-dimensional, dielectric photonic crystal (PC) slab in freespace. A transverse electric polarized upper band of the crystal is used. The measured refraction spectra indicates that a highly isotropic negative index of refraction is present in th…
We use direct infrared measurements to determine the number of binding sites, their dissociation constants, and preferential interaction parameters for inorganic phosphate and sulfate anions in collagen fibrils from rat tail tendons. In contrast to previous reports of up to 150 bound phosphates per collagen molecule,…
In Neisseria meningitidis and related bacterial pathogens, sialic acids play critical roles in mammalian cell immunity evasion and are synthesized by a conserved enzymatic pathway that includes sialic acid synthase (NeuB, SiaC, or SynC). NeuB catalyzes the condensation of phosphoenolpyruvate (PEP) and N-acetylmannosam…
In the present work, the densification and microstructure of M2 high speed steel powder processed by direct laser sintering method was studied. Test specimens were produced using a 200 W continuous wave CO2 laser beam at different scan rates ranging from 50 to 175 mm s−1. The building process was performed under argon…
The use of many common clinically relevant chemotherapeutics is often limited due to insufficient delivery to the tumor and dose-limiting systemic toxicities. Therefore, therapeutics that specifically target tumor cells and are nontoxic to normal cells are required. Here, we report the development of a novel class of…
Nanoscale isotope and chemical images of grains of Amelia albite that were reacted with 2 m 18 O-enriched solution of KCl show a correspondence between O-isotope exchange and K-Na exchange. Experiments were conducted for 4.6 d at 600 °C and 200 MPa. After 6 d, the 150 µm diameter albite grains had 5.20 µm rims in whic…