Materials Literature
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Trioctahedral mica samples, collected at Cava St. Antonio (Mt. Vulture, Italy) were studied by combining electron-microprobe and C-H-N elemental analyses, single-crystal X-ray diffraction refinement, Mossbauer and Fourier transform infrared spectroscopies. Electron-microprobe analyses show the crystals to be quite hom…
Outer surface protein A (OspA) from Borrelia burgdorferi has an unusual dumbbell-shaped structure in which two globular domains are connected with a "single-layer" beta-sheet (SLB). The protein is highly soluble, and it has been recalcitrant to crystallization. Only OspA complexes with Fab fragments have been successf…
Measurements of the solubility and metastable zone for the oxalic acid−water system were obtained. The solubility was measured within the temperature range from 284.19 to 352.02 K. The mole fraction solubility was correlated satisfactorily with the temperature by the equation: x eq = 4 × 10 -7 e 0.0368 T . The values…
This communication describes a procedure for fabrication of hierarchical luminescence patterns based on the template-assisted assembly of CdSe nanocrystals on a self-assembled structure with green-emitting microstripes, as well as the photoinduced fluorescence enhancement of CdSe nanocrystals and photobleaching of dye…
Abstract Summary: Hybrid polyester resins containing polyhedral oligomeric silsesquioxanes (POSS), and their polyurethanes were prepared using reactive POSS as a substitution for partial diol monomer. They were investigated by FT‐IR, rheometry, dynamic mechanical analysis, wide‐angle X‐ray diffraction, contact‐angle m…
Abstract Summary: By using DSC, 13 C CP/MAS NMR and SEM, we studied the physical properties and chemical structure of silk fibers grafted with methacrylamide (MAA). At a given MAA concentration, the inverse of fiber weight gain linearly increased with increasing square root of the initiator concentration, and at a giv…
Abstract Summary: This paper presents the results of an experimental investigation concerning the use of an ethylene butyl acrylate and glycidyl methacrylate (EBAGMA) terpolymer as an interfacial agent for isotactic poly(propylene)/wood flour (iPP/WF) composites at various filler ratios (10, 20 and 30 wt.‐%). The effe…
The rate of energy transfer from Si nanocrystals to Er ions was modified by placing a Au layer nearby. The distance between the active layer and the Au layer as well as the wavelength were changed systematically to quantitatively discuss how the energy transfer rate is modified by the photonic mode density. It was fou…
Abstract Assessing the degree of organoclay delamination and layer alignment is crucial to deliver consistent properties of nanocomposite materials. A simple infrared technique is discussed that permits quantitative determination of these organoclay dispersion parameters in a nanocomposite. This technique complements…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTEffective Acid-Catalyzed Synthesis of 100% Hyperbranched PolyacenaphthenonesYu Fu, Annelies Vandendriessche, Wim Dehaen, and Mario SmetView Author Information Department of Chemistry, University of Leuven, Celestijnenlaan, 200F, B-3…
Abstract In the present work, the effectiveness of using a styrene/ethylene–butylene/styrene rubber grafted with maleic anhydride (MA) as toughening material in ternary blends with two polyamide‐6 nanocomposites or PP with different molecular weight as matrix phases was evaluated in terms of SEM and TEM morphology, WA…
Ein bunter Strauß: Kristalline Nanoblumen (siehe Bild) von Verbindungen mit unterschiedlichen chemischen und physikalischen Eigenschaften, z. B. In2O3, ZnO, CoO, MnO und ZnSe, lassen sich mit der neuartigen Methode des eingeschränkten Ligandenschutzes (limited ligand protection, LLP) erhalten. LLP destabilisiert die p…
The advent of the multiwavelength anomalous diffraction phasing method has significantly accelerated crystal structure determination and has become the norm in protein crystallography. This method allows researchers to take advantage of the anomalous signal from diverse atoms, but the dominant method for derivative pr…
The iron-chromium alloy system has an unexplained anomaly: although there is a broad miscibility gap it appears to be favorable for chromium to dissolve in iron. This is consistent with ab initio calculation, but no simpler physically intuitive picture has been presented. Here it is shown that the Ising model, based o…
Laser ablated transition-metal (TM)-doped In 2 O 3 thin films grown under appropriate conditions on both MgO and Al 2 O 3 substrates can be well crystallized and ferromagnetic at room temperature. Of all the dopants, Ni seems to be the most promising candidate since doping Ni in In 2 O 3 results in semiconducting film…
Polyaniline (PANI)−dinonylnaphthalene disulfonic acid (DNNDSA) form a thermoreversible gel when prepared from formic acid medium. Mixing of organically modified montmorillonite (om-MMT) clay during PANI−DNNDSA gel preparation produces the PANI−DNNDSA gel nanocomposites (GNCs). WAXS and TEM pictures indicate GNC-1 (num…
The characteristics of hydrogen generation from concentrated sodium borohydride (NaBH 4 ) solutions were studied in this paper because of its potential application in hydrogen storage. The hydrolysis was conducted over a carbon-supported ruthenium catalyst, and the hydrogen generated was measured using a computer-moni…
AIMS: To study the influence of some metallic elements of stainless steel 304 (SS 304) on the development and activity of a sulfate-reducing bacterial biofilm, using as comparison a reference nonmetallic material polymethylmethacrylate (PMMA). METHODS AND RESULTS: Desulfovibrio desulfuricans biofilms were developed on…
The top seed: Various metal nanocrystals are studied as crystallization seeds for silicon and germanium nanowires. The wires are grown by decomposing silane or germane reactants in supercritical organic solvents. Co and Ni nanocrystals promote the seeding of high-quality nanowires and catalyze reactant decomposition u…
We present repeated structural and electrical measurements on individual multiwalled carbon nanotubes, alternating between electrical measurements under ambient conditions and transmission electron microscopy (TEM). The multiwalled carbon nanotubes made by chemical vapor deposition were manipulated onto cantilever ele…