Materials Literature
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Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digita…
For materials of varying band gap, we compare energy levels of atomically localized defects calculated within a semilocal and a hybrid density-functional scheme. Since the latter scheme partially relieves the band gap problem, our study describes how calculated defect levels shift when the band gap approaches the expe…
Gold nanocages with an average edge length of 65 +/- 7 nm and a strong absorption peak at 800 nm were conjugated with monoclonal antibodies (anti-HER2) to target breast cancer cells (SK-BR-3) through the epidermal growth factor receptor (in this case, HER2), which is overexpressed on the surfaces of the cells. Both th…
Morphology-controlled growth of ZnO nano- and microstructures was achieved by microwave irradiation. Various basic ZnO structures, including nanorods, nanocandles, nanoneedles, nanodisks, nanonuts, microstars, microUFOs, and microballs were simply synthesized at a low temperature (90 °C) with low power microwave-assis…
Nanomaterials are frontier technological products used in different manufactured goods. Because of their unique physicochemical, electrical, mechanical, and thermal properties, single-walled carbon nanotubes (SWCNT) are finding numerous applications in electronics, aerospace devices, computers, and chemical, polymer,…
A layer‐by‐layer method is used to coat titania on spherical polystyrene (PS) powders in an aqueous solution. To increase surface charge density, a negatively charged PS powder is sequentially adsorbed by a cationic polyethylenimine (PEI)/anionic ammonium salt of poly(acrylic acid)/cationic PEI polyelectrolytes. A pre…
During yarn formation by ring spinning, fibres are bent into approximately helical shapes and torque or twist-liveliness is created. The yarn torque causes yarn instability, manifested as snarling or entanglements, and this instability must be controlled during manufacturing processes. Generally, the torque depends on…
A technique for numerical analysis of the dynamics of the ring-spinning balloon based on radial basis function networks (RBFNs) is presented in this paper. This method uses a ‘universal approximator’ based on neural network methodology to solve the differential governing equations which are derived from the conditions…
Glass-jute (treated and untreated) composites of mixed matrix materials [epoxy resin of bisphenol-C (EBC) and bisphenol-C-formaldehyde (BCF) of 50 wt.% of glass-jute fibers] have been prepared by hand layup technique at 150°C under 7.6 MPa pressure for 2 h. The hydrophilic character of the jute fibers has been reduced…
Abstract The versatile catalyst methyltrioxorhenium(VII) (MTO) is now available in high yields by utilizing easily accessible nontoxic starting materials. The new synthetic pathway allows an inexpensive, large‐scale production of MTO, paving the way for industrial applications. A variety of starting materials is compa…
Novel biodegradable injectable poly(ethylene glycol)-(PEG) based macromers were synthesized by reacting low-molecular weight PEG (MW: 200) and dicarboxylic acids such as sebacic acid or terephthalic acid. Chemical structures of the resulting polymers were confirmed by Fourier transform infrared (FTIR) and nuclear magn…
Lead zirconate titanate films with different Zr/Ti ratios were fabricated on a platinized silicon substrate using radio frequency magnetron sputtering. Crack‐free films with a rhombohedral, morphotropic phase boundary and tetragonal compositions were deposited using single oxide targets containing various amounts of e…
The crystal structures of bis-3,5-dimethylpyrazole copper(II) 4-methylbenzoate, bis-3,5-dimethylpyrazole copper(II) 3-methylbenzoate, bis-3,5-dimethylpyrazole copper(II) 4-nitrobenzoate show that 3,5-dimethylpyrazole in the cis or trans positions is related to axial distortion of Cu-O bond in carboxylate groups. A met…
Abstract Y-shaped carbon nanofibers as a multi-branched carbon nanostructure have potential applications in electronic devices. In this article, we report that several types of Y-shaped carbon nanofibers are obtained from ethanol flames. These Y-shaped carbon nanofibers have different morphologies. According to our ex…
Unsintered spherical barium ferrite (BaFe 12 O 19 ) nanoparticles were successfully prepared by the alcohol‐assisted spray‐pyrolysis (AASP) method without any postannealing processes. Ethyl alcohol (EtOH) in the precursor solution for BaFe 12 O 19 particles was very effective not only in its capacity to decrease the p…
We report extended x-ray absorption fine-structure (EXAFS) studies of $n$- and $p$-type ${\text{Ba}}_{8}{\text{Ga}}_{16}{\text{Ge}}_{30}$ samples (type-I clathrate) at the Ga, Ge, and Ba $K$ edges, to probe the local structure, particularly around the Ba atoms located inside 20- and 24-atom cages (Ba1 and Ba2 sites, r…
Nanocomposites of three different polyesters with dodecyltriphenyl-phosphonium-montmorillonite (C12PPh-MMT) organoclay are compared with respect to their thermal properties, mechanical properties, and morphologies. Poly(butylene terephthalate) (PBT), poly(ethylene terephthalate) (PET), and poly(trimethylene terephthal…
Tensile tests are applied on fabric in seven directions oriented with 15° increment with respect to the warp direction. These tests are carried out with articulated jaws to ensure their homogeneity. In addition to measuring the stress and displacement fields, a strain optic analysis by videos acquisition and processin…
Picosecond-resolved photoluminescence (PL) and polarization gated PL anisotropy measurements have been performed to confirm a strong sensitized emission from a chemotherapeutic drug, Merocyanine 540 (MC540), conjugated to highly luminescent CdSe/ZnS quantum dots (QDs) via Förster resonance energy transfer (FRET) from…
Electrospray ion-trap tandem mass spectrometry (ESI-MS/MS) and high-performance liquid chromatography coupled with electrospray ionization time-of-flight mass spectrometry (LC/ESI-TOFMS) were used to identify and characterize eight C-21 steroidal glycosides in Hoodia gordonii. A generalized fragmentation pathway was p…