Materials Literature
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Abstract The reaction of ( c ‐C 6 H 11 ) 7 Si 7 O 9 (ONa) 3 , prepared in situ from ( c ‐C 6 H 11 ) 7 Si 7 O 9 (OH) 3 ( 1 ), and MnCl 2 (THF) 2 in THF solution resulted in formation of the novel heterobimetallic Mn/Na metallasilsesquioxane complex [( c ‐C 6 H 11 ) 7 Si 7 O 9 (O 3 Mn)Na(Et 2 O)] 2 ·Et 2 O ( 2 ) which w…
Abstract Waste tire powder subjected to allylamine modification in the presence of ultraviolet (UV) radiation has been used to prepare polypropylene based thermoplastic vulcanizates with maleic anhydride polypropylene (MA‐PP) as compatibilizer. The effect of increasing the concentration of MA‐PP on performance charact…
In the present work, characterisations such as surface morphology, cross-section image and composition of corrosion scale formed on the P110 steel under turbulent flow conditions with various Cl– concentrations have been studied by means of scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectr…
Particleboards were produced from three-year-old poplar clones (e.g., Populus euramericana.costanzo, Populus euramericana. 561.41, Populus euramericana triplo, Populus euramericana vernirubensis, Populus euramericana marilandica, Populus euramericana. I-214, Populus deltoides 77.51, Populus trichocarpa, Populus nigra.…
A structure designed to show functionality on the nanometer length scale ideally would spontaneously form periodic nanometer-scale patterns comprising regions with contrasting properties. Here we report the synthesis of three new oxides that spontaneously form a variety of nanostructures with a periodic arrangement of…
Well-defined diblock copolymers consisting of poly( m -benzamide)s with different N -alkyl groups and of poly( m -benzamide)s and poly( p -benzamide)s with different N -alkyl groups were synthesized by means of sequential chain-growth condensation polymerization. The polymerization of 3-(alkylamino)benzoic acid alkyl…
Abstract The effects of methyl methacrylate (MMA) grafting and in situ formation of silica particles on the morphology and mechanical properties of natural rubber latex (NRL) were investigated. MMA grafting on NRL was carried out using cumyl hydroxy peroxide/tetraethylene pentamine (CHPO/TEPA) as a redox initiator cou…
This article deals with short spruce fiber-reinforced recycled polypropylene materials. Polypropylene has been subjected to n extrusion and crushing cycles, in order to simulate the recycling process. Recycling consequences have been studied on five times and 10 times-recycled PP. Then, short spruce fibers have been a…
By combining electron paramagnetic resonance (EPR) measurements on a nitroxide probe and differential scanning calorimetry (DSC), we demonstrate existence of liquid supercooled water in a silica hydrogel with high hydration level down to temperatures of at least 198 K. Besides the major fraction of liquid supercooled…
A tunable left-handed transmission is demonstrated experimentally in a ferromagnetic/ferroelectric composite metamaterial (CMM) consisting of an array of yttrium iron garnet (YIG) rods combined with barium strontium titanate (BST) rods. We observed a passband in the CMM within the overlap of the stop bands of YIG rods…
Abstract Mesoporous silica containing multiple organometallic active sites is synthesized using a traditional post‐synthesis complexation technique and a surfactant‐directed assembly approach. Systematic spectroscopic studies and structure analysis indicate that catalytic mesoporous silica with controlled composition…
Mycobacterium smegmatis MshC catalyzes the ATP-dependent condensation of GlcN-Ins and l-cysteine to form l-Cys-GlcN-Ins, the penultimate step in mycothiol biosynthesis. Attempts to crystallize the native, full-length MshC have been unsuccessful. However, incubation of the enzyme with the cysteinyl adenylate analogue,…
Using organic electrochemical transistors as sensors, the sample-receptor reaction often induces moderate changes only in the drain current dynamics as the gate voltage level is switched. Here, we report an electrochemical sensor circuit including electrochemical transistors based on poly(3,4-ethylenedioxythiophene) d…
Moderate changes in the concentration of poly(sodium 4-styrene sulfonate) (PSS) and poly(allylamine hydrochloride) (PAH) used in fabricating polyelectrolyte multilayers (PEMs) have been found to strongly affect the formation of defects (i.e., gaps) within these films, as revealed by gas permeation selectivity measurem…
A vacuum field emission microtriode in lateral configuration utilizing nanocrystalline diamond is presented. The nanodiamond lateral triode is a completely integrated device comprising a fingerlike emitter geometry with an ∼15nm tip radius of curvature, built-in gate, and anode with gate-cathode spacing of 3μm and ano…
The magnetocaloric effect associated with magnetic phase transitions in β-Co(OH)2 nanoparticles has been investigated. A sign change in the magnetocaloric effect is induced by a magnetic field, which is related to a field-induced transition from the antiferromagnetic to the ferromagnetic state below the Néel temperatu…
A procedure is outlined for the determination of magnetic exchange constants in anisotropic perovskite anitferromagnets using powder inelastic neutron scattering. Spin-wave densities of states are measured using time-of-flight inelastic neutron scattering for ${\text{LaMnO}}_{3}$ ($A$-type antiferromagnet), ${\text{La…
The success of the molecular-replacement method for solving protein structures from experimental diffraction data depends on the availability of a suitable search model. Typically, this is derived from a previously solved structure, sometimes by homology modelling. Very recently, Baker, Read and coworkers have demonst…
The ${D}_{1}$ and ${D}_{2}$ vibrational ring modes of normal and densified silica are investigated using a time resolved pump-probe technique and spontaneous Raman spectroscopy. The vibrational response function of both techniques is derived and compared to the experimental results obtained on three samples of silica…
The temperature-dependent optical properties of ZnO nanosheets and nanowires fabricated on conductive brass substrates with different surface-to-volume ratios and morphologies are investigated. The near band edge and deep-level emission mechanisms are studied. The blueshifted donor bound exciton D 0X peak and enhanced…