Materials Literature
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Serpentinitic landscapes are characterized by unusual plant species composition and vegetation patchiness. We hypothesized that soil extractable Ca content is correlated with vegetation Ca concentration and may contribute to the unusual vegetation characteristics. Eleven pedons from California were sampled within soil…
Bis(mexylamino)triazines have been identified as a family of compounds showing an exceptional propensity to form glassy phases as opposed to crystals. The particularities of this family of compounds are their ability to self-assemble through hydrogen bonding in well-defined patterns to form supramolecular aggregates w…
The patterning of carbon nanostructures by electron beam stimulated oxidation is described. Sputter deposited carbon thin films and carbon nanotubes are locally oxidized in a scanning electron microscope using injected water vapor. The resulting structures are examined with scanning electron microscopy and transmissio…
The experimental domain size scaling law in epitaxial ${\text{BiFeO}}_{3}$ films shows a different behavior from predictions of the conventional elastic domains: the (101)-type $71\ifmmode^\circ\else\textdegree\fi{}$ domains are much wider than that of (100)-type $109\ifmmode^\circ\else\textdegree\fi{}$ despite the la…
Adsorption isotherms of 3 selected paper-based packaging materials, that is, vegetable parchment (VP) paper, Kraft paper, and solid-bleached-sulfate (SBS) paperboard, were determined at 3 different temperatures (25, 40, and 50 degrees C). The GAB isotherm model was found to fit adequately for describing experimental a…
Polyaniline (PANI) can be deposited either on the surface or in the bulk of a microporous membrane by various chemical oxidative polymerization techniques. Each technique has distinctive effects on the PANI site and extent of deposition on the base membrane. In the present study, mixed cellulose ester (ME) membranes w…
The first applications in power ultrasonics were largely focused on ultrasonic cleaning baths, which rely on generating inertial cavitation, and the incorporation of ultrasonic excitation in manufacturing processes such as joining of plastics and metals. Since the early days of power ultrasonics there has been a rapid…
Direct evidence for C-O bond cleavage in the partial oxidation of 2-butanol on oxygen precovered Au(111) is provided using temperature programmed desorption (TPD) and molecular beam reactive scattering (MBRS) under ultrahigh vacuum (UHV) conditions. The oxygen precovered Au(111) surface can promote the partial oxidati…
Silanolsynthese: Das lakunare Polyoxowolframat (nBu4N+)4[γ-SiW10O34(H2O)2] (I) mit zwei Leerstellen ist ein effizienter Homogenkatalysator für die hoch selektive Oxidation von Organosilanen zu Silanolen mit 30–60 % H2O2. Silane 1 mit Aryl-, Alkyl-, Alkenyl-, Alkinyl- und Alkoxygruppen werden in hohen Ausbeuten chemose…
In the current work, the fracture toughness of sand-particle- and wood-flake-reinforced polyester composites was studied under a linear elastic fracture mechanics approach. The effects of the particulate volume fraction (0–60 vol %) were studied. Scanning electron microscopy was used to observe the damage features on…
We have probed changes in the magnetic, electrical, dielectric, optical, and thermodynamic properties of iron vanadate (FeVO(4)) at two magnetic phase transitions. FeVO(4) exhibits two antiferromagnetic transitions at T(N1) = 22 K and T(N2) = 15 K. Below 15 K FeVO(4) develops an electric polarization, concomitant with…
The adsorption of potassium and CO 2 and their interaction on a Au(111) surface have been studied using high-resolution electron energy loss spectroscopy, thermal desorption spectroscopy, work function measurements, and Auger electron spectroscopy. Potassium adsorbs in cationic form on Au(111) at low coverage, depolar…
Abstract Part I of this series of papers showed that color suppression (in some cases superior to that with established phosphites) of polyethylenes (PEs) containing a highly discoloring hindered phenolic antioxidant, Lowinox 22IB46 [2,2′‐isobutylidenebis(4,6‐dimethylphenol)] (L22IB46), and titanium catalyst residues…
Abstract Polyhedral oligomeric silsesquioxane (POSS) cages containing an iminofullerene species are reported herein. Monosubstituted benzyl chloride POSS was synthesized, and subsequently reacted with sodium azide to form mono benzyl azide POSS. The azide was subsequently reacted with C 60 in anhydrous, degassed tolue…
First-principles quantum chemistry calculations within the periodic linear combination of atomic orbitals (LCAO) formalism have been used to probe electronic and phonon properties of crystalline 5d transition metal oxides ReO3, ZnWO4 and CaWO4. The obtained equilibrium crystal structure is in good agreement with known…
Electron energy-loss spectroscopy (EELS) combined with scanning transmission electron microscopy (STEM) allows for the investigation of the local electronic structure with atomic column resolution, owing to the development of spherical aberration correctors. In the present research, we report $B$-site-resolved oxygen…
Foam stability
Pressure-induced lattice collapse was discovered in tetragonal (T) phase of single crystal ${\text{Fe}}_{1.05}\text{Te}$ at room temperature through x-ray and neutron-diffraction measurements. A remarkable compression along the $c$ axis $(\ensuremath{\sim}5%)$ was observed upon increasing pressure from the ambient con…
The composition of phytoplankton in the Ebro River estuary (Spain) was analyzed at six sampling stations in April, July and October 1999 and February 2000, based on plankton net and bottle samples. A total of 304 taxa belonging to 13 classes were identified. Bacillariophyceae and Chlorophyceae were the most important…
Abstract Vertically aligned ZnO nanorods (NRs) with a diameter in the range of 160–200 nm were grown on p‐GaN/sapphire substrates by aqueous chemical growth technique and white light emitting diodes (LEDs) are fabricated. The properties of this LED were investigated by parameter analyzer, cathodoluminescnce (CL), elec…