Materials Literature
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We explore simple lattice-gas reaction models for CO-oxidation on 1D and 2D periodic arrays of surface adsorption sites with CO adsorption and desorption, dissociative O2 adsorption and recombinative desorption (at low rate), and CO + O reaction to form CO2. Adspecies interactions are neglected, and adspecies diffusio…
We report a collision-induced dissociation (CID) investigation of the mixed addenda polyoxometalate (POM) anions, PMo(12-n)W(n)O(40)(3-) (n = 0-12). The anions were generated in solution using a straightforward single-step synthesis approach and introduced into the gas phase by electrospray ionization (ESI). Distinct…
The biodegradable family of polymers<br> polyhydroxyalkanoates is an interesting substitute for convectional<br> fossil-based plastics. However, the manufacturing and environmental<br> impacts associated with their production via intracellular bacterial<br> fermentation are strongly dependent on the raw material used…
Recently, a large enhancement in the ferroelectric transition temperature of several oxides is reported by growing the respective thin films on appropriate substrates. This phenomenon is correlated with high residual strain in thin films often leading to large increase in the tetragonality of their crystal structure.…
We study, theoretically, the impact of Zener tunneling (the generation of electron-hole pairs by the electric field) on the charge-transport properties of graphene in the high-field regime. We model Zener tunneling in a rigorous way, using the quantum master equation for the density matrix. In the presence of Zener tu…
ABSTRACT One of the most significant limitations to widespread industrial implementation of emerging bioplastics such as poly(lactic acid) and poly(hydroxyalkanoate) (PHA) is that they do not match the flexibility and impact resistance of petroleum‐based plastics like poly(propylene) or high‐density poly(ethylene). Th…
To estimate the current status of reactor pressure vessel of Fukushima Daiichi nuclear power plant, it is important to clarify the breakup and the fragmentation behavior of molten material jet in boiling water reactor (BWR) lower plenum by a numerical simulation. To clarify the effects of complicated structures on jet…
CONTEXT: Melanoma therapy absorbs attention because of the high morbidity and mortality. However, currently systematic administrations could take little therapeutic efficiency and severe side effects. OBJECTIVE: An effective transdermal formulation for the convenient melanoma therapy was found and evaluated. MATERIALS…
Thermophilic Geobacillus sp. AY 946034 strain was found to accumulate poly-3-hydroxybutyrate (PHB). The highest PHB percent yield was found under phosphorous limiting conditions (68.9% of cell dry weight), using glucose as the sole carbon source. Higher values of enzyme (ketothiolase, CoA reductase and PHA synthetase)…
Solid solutions of ceria with other transition metal cations have been known to exhibit enhanced reducibility and oxygen storage capacity. Formation of differential bond lengths in the lattice of solid solutions has been proposed to be responsible for the improvement in their catalytic activity. We have carried out a…
Engineered nanoparticles, with unconventional properties, are promising platforms for biomedical applications. Since they may interact with a wide variety of biomolecules, it is critical to understand the impact of the physicochemical properties of engineered nanoparticles on biological systems. In this study, the eff…
ABSTRACT This work examines the stereochemical control and polymerizability of exo ‐methylene‐lactide (MLA) or (6 S )‐3‐methylene‐6‐methyl‐1,4‐dioxane‐2,5‐dione, a chiral monomer derived from l ‐lactide, toward vinyl‐addition and ring‐opening polymerization (ROP) pathways, respectively. Currently, no information on th…
Transition-metal complexes containing stimuli-responsive systems are attractive for applications in optical devices, photonic memory, photosensing, as well as luminescence imaging. Amongst them, photochromic metal complexes offer the possibility of combining the specific properties of the metal centre and the optical…
Wideband multilayers designed for various applications in hard X-ray to Extreme UV spectral regions are based on a layered system with layer thicknesses varying largely in depth. However, because the internal structure of a thin film depends on its thickness, this will result in multilayers in which material propertie…
Based on dynamical cluster approximation (DCA) quantum Monte Carlo simulations, we study the interaction-driven Mott metal-insulator transition (MIT) in the half-filled Hubbard model on the anisotropic two-dimensional triangular lattice, where the degree of frustration is varied between the unfrustrated case and the f…
The self-assembly and bioactivity of a peptide amphiphile (PA) incorporating a 13-residue sequence derived from the last 13 amino acids of the C-terminus of lumican, C16-YEALRVANEVTLN, attached to a hexadecyl (C16) lipid chain have been examined. Lumican is a proteoglycan found in many types of tissue and is involved…
Magnesium peroxide is an excellent source of oxygen in agriculture applications, for instance it is used in waste management as a material for soil bioremediation to remove contaminants from polluted underground water, biological wastes treatment to break down hydrocarbon, etc. In the present study, sol-gel synthesis…
We study transport properties of hexagonal zigzag graphene quantum rings connected to semi-infinite nanoribbons. Open two-fold symmetric structures support localized states that can be traced back to those existing in the isolated six-fold symmetric rings. Using a tight-binding Hamiltonian within the Green's function…
Energy relaxation of hot Dirac fermions in bilayer epitaxial graphene is experimentally investigated by magnetotransport measurements on Shubnikov-de Haas oscillations and weak localization. The hot-electron energy loss rate is found to follow the predicted Bloch-Grüneisen power-law behaviour of T(4) at carrier temper…
To increase the efficacy of doxorubicin in induction of apoptosis, pH-responsive nanocarriers with an average particle size of 20 nm by using chitosan-polymethacrylic acid (CTS-PMAA) shells and Fe3O4 cores via in situ polymerization approach were synthesized. Doxorubicin hydrochloride (DOX) was loaded effectively to n…