Materials Literature
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The viscoelastic performance indicators of a commercial roofing membrane and an ecological bituminous membrane, which contains EVA copolymer from disused greenhouses and filler from landfill, are investigated. Rheological methods reveal as a useful tool to investigate basic and technical aspects of these materials. It…
The compact spinning systems are mostly used forspinning of combed yarns. However, many attemptshave been made to use the compact system forspinning carded yarns. Recently SUESSEN hasintroduced D–Type slot compact system forproducing carded compact yarn. In this researchwork, an attempt has been made to analyze themig…
In the present paper, a study of the effects of fabricweight, fiber cross-sectional shapes (round, hollowand trilobal) and presence of reinforcing materialon the compression properties (initial thickness,percentage compression, percentage thickness lossand percentage compression resilience) of polyesterneedle punched…
Creep has been known and studied for textilematerials for decades. In comparison, a newlyobserved phenomenon of inverse creep seems not tohave received much attention. A new instrument hasbeen fabricated to measure creep and inverse creep intextile materials particularly yarns. Creep and Inversecreep measurements of n…
Service life definitions involve more considerations today than thirty years ago. This is because only mechanical parameters were taken into account by then. Other parameters like durability were introduced a few years ago but it is difficult to use these parameters to predict service life and validate, nowadays, futu…
A new mineral, droninoite, was found in a fragment of a weathered Dronino iron meteorite (which fell near the village of Dronino, Kasimov district, Ryazan oblast, Russia) as dark green to brown fine-grained (the size of single grains is not larger than 1 μm) segregations up to 0.15 × 1 × 1 mm in size associated with t…
The stress corrosion crack growth response of three extruded alloy 690 CRDM tube heats was investigated in several thermomechanical conditions. Extremely low propagation rates (< 1 x 10{sup -9} mm/s) were observed under constant stress intensity factor (K) loading at 325-350 C in the as-received, thermally treated (TT…
Abstract The mechanical stability of titania (TiO 2 ) nanofibers was improved by fabricating TiO 2 /poly(dimethyl siloxane) (PDMS) composite fibers using a combination of hybrid electrospinning and sol‐gel methods, followed by heat treatment at 250°C for 3 h. The compositions (90/10, 80/20, and 70/30, w/w) of the TiO…
Reactions of hexavacant polyoxotungstate [H 2 P 2 W 12 O 48 ] 12− ({P 2 W 12 }) with transition-metal and lanthanide-metal cations assisted with organic molecules (tartrate or dimethylammonium chloride) lead to the isolation of two polyoxotungstates: K 3 Na 8 [K 3 ⊂{GdMn(H 2 O) 10 }{HMnGd 2 (Tart)O 2 (H 2 O) 15 }{P 6…
The undecanuclear complex in [Fe(III)(11)(mu(4)-O)(3)(mu(3)-O)(4)(L)(3)(mu-O(2)CCMe(3))(12)]Cl.5MeCN has been synthesized and characterized by single-crystal X-ray crystallography. Mossbauer spectroscopy and bulk susceptibility studies reveal that the complex has an S = (13)/(2) spin ground state and exhibits single-m…
Abstract High purity Al (99.99 wt.%) and high purity Cu (99.99 wt.%) were processed using high pressure torsion. The mechanism for unusual softening in Al after the resultant intense plastic straining was investigated. The pure Cu was used to simulate a thermal effect on the hardness behavior and microstructural evolu…
Phase Change Memory (PCM) technology is demonstrating the capability to enter the broad memory market and to be a mainstream memory for the next decade. PCM provides a new set of features interesting for novel applications, combining components of NVM and DRAM and being at the same time a sustaining and a disruptive t…
Single phase Bi0.9−xLa0.1NdxFeO3 (BLNFOx) (x=0.05, 0.07, and 0.1) multiferroic ceramics were prepared to study the effect of combine substitution of La and Nd in BiFeO3 (BFO). X-ray diffraction studies revealed phase transition from rhombohedral (R3c) to triclinic (P1) on substitution of 05 and 07 mol % of Nd and subs…
Recent advances in nanomaterials have produced a new class of fluorescent labels by biocognition molecules to fluorescent noble-metal nanoclusters such as Au and Ag. In particular, the emission wavelength of metallic nanoclusters can be tuned by changing the capping molecules, and a single light source is needed for s…
Poly(3-hexylthiophene) (P3HT) supramolecular structures are fabricated on P3HT-dispersed reduced graphene oxide (RGO) monolayers and surfactant-free RGO monolayers. P3HT is able to disperse RGO in hot anisole/N,N-dimethylformamide solvents, and forms nanowires on RGO surfaces through a RGO induced crystallization proc…
Cationic, hydrophobically associating polyacrylamide (PDA) was synthesized via the inverse miniemulsion polymerization in the presence of template. Dimethyloctane(2- acrylamidopropyl)ammoniumbromide (DOAB) was synthesized via quaternization reaction and used as the hydrophobic monomer. Polyacrylic acid (PAA) was used…
The membranes of sulfonated polyetheretherketone(SPEEK) doped with rare earth metal oxide nanometer cerium oxide (CeO2) were prepared for direct methanol fuel cell (DMFC) application, which was treated by parallel or perpendicular high magnetic field of 6 Teslas (T) at 100°C. The proton conductivity of membrane specim…
Thermo-oxidative degradation of graphite/epoxy composite laminates due to exposure to elevated temperatures was characterized using weight loss and short beam strength (SBS) reduction data. Test specimens obtained from 24-ply, unidirectional AS4/3501-6 graphite/epoxy laminates were subjected to 100, 150, 175, and 200°…