Materials Literature
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Titanium dioxide (TiO2) nanoparticles (NPs) are manufactured worldwide in large quantities for use in a wide range of applications. TiO2 NPs possess different physicochemical properties compared to their fine particle (FP) analogs, which might alter their bioactivity. Most of the literature cited here has focused on t…
We investigate the evolution of the interfacial electronic structure and dynamics of thin films of the organic semiconductor vanadyl naphthalocyanine on Au(111). Using angle-resolved two-photon photoemission, a comprehensive coverage- and excitation-energy-dependent characterisation of the electronic structure and the…
Regular dislocation walls, where dislocations are spaced equally along the wall direction, are a popular idealization for modelling the arrangement and interactions of excess dislocations in plastic deformation. The assumption of regular walls is motivated by the fact that such walls represent minimum energy arrangeme…
The O 2 diffusion process in silica nanoparticles is experimentally studied in samples of average radius of primary particles ranging from 3.5 to 20 nm and specific surface ranging from 50 to 380 (m 2 /g). The investigation is done in the temperature range from 98 to 177 °C at O 2 pressure ranging from 0.2 to 66 bar b…
Cancer one of the deadliest disease and resistance of cancer cells has been the major issue in both the modern molecular targeted therapeutics as well as in the conventional chemotherapeutics.As on date chitosan has been the ideal choice as a carrier for delivering anticancer drugs like doxorubicin and cisplatin for t…
A novel series of highly birefringent liquid crystalline compounds, 2-(6-alkoxynaphthalen-2-yl)-5-cyanopyridines (nO-NpPyCN, n = 2–8) that have potential as commercially useful, were synthesised using a short two-step reaction with overall yields between 55% and 85%. Spectral analyses were in accordance with the expec…
The development of materials for clean and efficient energy generation and storage is one of the most rapidly developing, multi-disciplinary areas of contemporary science, driven primarily by concerns over global warming, diminishing fossil-fuel reserves, the need for energy security, and increasing consumer demand fo…
The effects of oxygen-containing functional groups on the surface roughness of graphene oxide are thoroughly studied using three-dimensional atomic force microscopy images, ball-and-stick model and wire-frame view results. Moreover, X-ray diffraction method and Fourier transform infrared spectroscopy are employed for…
Abstract Mixed metal–semiconductor nanocrystal aerogels are fabricated, which are light‐emitting and highly porous macroscopic monoliths. Thiol‐stabilized CdTe and Au nanoparticles from aqueous synthesis act as building blocks for the hybrid material. The Au colloids undergo a surface‐modification to enhance the parti…
We propose two toy-models to describe, predict and interpret the wrinkles appearing on the surface of skin when it is sheared. With the first model, we account for the lines of greatest tension present in human skin by subjecting a layer of soft tissue to a pre-stretch, and for the epidermis by endowing one of the lay…
Oxygen vacancies (VOs) effects on magnetic ordering in Eu0.5Ba0.5TiO3-δ (EBTO3-δ) thin films have been investigated using a combination of experimental measurements and first-principles density-functional calculations. Two kinds of EBTO3-δthin films with different oxygen deficiency have been fabricated. A nuclear reso…
Isolation and characterization cellulose nanocrystal of alpha cellulose from Palm Empty Fruit Bunch (EFB) have been performed. Oil Palm Empty Fruit Bunch (EFB) was delignificated with 3,5% HNO 3 and NaNO 2 , precipitated with17.5% NaOH, bleaching process with 10% H 2 O 2 . Nanocrystal obtained through the hydrolysis o…
Os solos do Estado do Acre na maioria são formados sobre material de origem com grande influência da orogênese Andina, com elevados teores de Ca2+, Mg2+ e Al3+ concomitantemente, associado às combinações diferenciadas dos valores da CTC, V e m. O objetivo deste trabalho foi caracterizar e classificar os solos de uma t…
The Yttria stabilized Zirconia (YSZ) is a standard electrolyte for solid oxide fuel cells (SOFCs), which are potential candidates for next generation portable and mobile power sources. YSZ electrolyte thin films having a cubic single phase allow reducing the SOFC operating temperature without diminishing the electroch…
To better understand the poor conservation of the helicase binding domain of primases (DnaGs) among the eubacteria, we determined the crystal structure of the Helicobacter pylori DnaG C-terminal domain (HpDnaG-CTD) at 1.78 Å. The structure has a globular subdomain connected to a helical hairpin. Structural comparison…
Saturation point mutagenesis was carried out at position 479 in the polyhydroxyalkanoate (PHA) synthase from Chromobacterium sp. strain USM2 (PhaC(Cs)) with specificities for short-chain-length (SCL) [(R)-3-hydroxybutyrate (3HB) and (R)-3-hydroxyvalerate (3HV)] and medium-chain-length (MCL) [(R)-3-hydroxyhexanoate (3H…
Hierarchical hollow MnO 2 microspheres have been synthesized by a facile hydrothermal method based on the decomposition of KMnO 4 precursor in nitric acid solution in the presence of Ce 3+ ions. The hierarchical hollow microspheres consisted of discuslike nanoplatelets and nanorods. The Brunauer–Emmet–Teller (BET) spe…
Crystallization kinetics parameters of a stoichiometric glass with the composition Li1.5Al0.5Ge1.5(PO4)3 were investigated by subjecting parallelepipedonal samples (3 × 3 × 1.5 mm) to heat treatment in a differential scanning calorimeter at different heating rates (3, 5, 8 and 10 °C/min). The data were analyzed using…
The lattice deformation effects on electric and magnetic properties of electron-doped La0.8Hf0.2MnO3 (LHMO) thin films have been systematically investigated. LHMO films with various thicknesses (15 nm, 40 nm, and 80 nm) were grown on (001) SrTiO3 and (001) LaAlO3 substrates, which induces in-plane tensile and compress…
We studied the photocurrent spectra (PCS) in ensembles of Si nanocrystals (NCs) embedded in a SiO2 matrix as a function of the average NC size and temperature, above the conductivity percolation threshold of the ensembles. The PCS clearly manifest the quantum confinement effect in this high NC density regime, where th…