Materials Literature
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Substitution of some Cr for Mn atoms in MnCoGe was employed to control the magnetic and structural transitions in this alloy to coincide, leading to a single first-order magnetostructural transition from the ferromagnetic to the paramagnetic state with a giant magnetocaloric effect observed near room temperature. Furt…
A reversible triple-shape effect is achieved for multi-phase polymer networks based on two different crystallizable segments. The reversibility of the two shape-changes is based on crystallization induced elongation (CIE) occurring during cooling and melting-induced contraction (MIC) during heating under constant stre…
Energy transfer from photoexcited zero-dimensional systems to metallic systems plays a prominent role in modern day materials science. A situation of particular interest concerns the interaction between a photoexcited dipole and an atomically thin metal. The recent discovery of graphene layers permits investigation of…
Identifying and designing physical systems for use as qubits, the basic units of quantum information, are critical steps in the development of a quantum computer. Among the possibilities in the solid state, a defect in diamond known as the nitrogen-vacancy (NV(-1)) center stands out for its robustness--its quantum sta…
The Mechanics and Thermodynamics of Continua presents a unified treatment of continuum mechanics and thermodynamics that emphasises the universal status of the basic balances and the entropy imbalance. These laws are viewed as fundamental building blocks on which to frame theories of material behaviour. As a valuable…
The A-type El Portezuelo Pluton (Catamarca, NW Argentina) is parental to an intragranitic suite of pegmatites of NYFtype affiliation (miarolitic class, miarolitic-rare earth element subclass, with features more similar to those reported for the gadolinite-fergusonite type). This study was performed on samples from the…
In this study it was shown that the enzymatic removal of xylan from ECF-bleached birch kraft pulp enhances the water removal from the pulp, especially in the late stages of pulp drying. The effect of xylanase treatments on dewatering was clarified by using a moving belt former (MBF), a press simulator (MTS), and an IR…
The study shows that the corrosion of Aluminum increases with increasing HCl concentration which indicates the dependence of Aluminum corrosion on the concentration of HCl .The inhibition efficiency of the corrosion by Aloe extract was found to increase with the increase of Aloe extract concentration. Its inhibitive a…
Self-assembled multilayers were fabricated from lignosulfonate (LS) and poly(diallyldimethylammonium chloride) (PDAC), and the adsorption and desorption behaviors of LS on the LS/PDAC multilayers under different pH conditions were intensively investigated. Results showed that the adsorption and desorption behaviors we…
Thermo-elastic behavior of perfect single crystal is considered. The crystal is represented as a set of interacting particles (atoms). The approach for determination of equivalent continuum values for the discrete system is proposed. Averaging of equations of particles' motion and long wave approximation are used in o…
O'MALLEY, PATRICIA PhD, RN, CNSEditor(s): O'Malley, Patricia PhD, RN, CNS, Column Editor Author Information
Abstract Theoretical investigation was performed on the CD signal of the closed-ring isomer of diarylethene with an extended π-conjugated substituent. The result showed that the different contribution of the substituent to the transition electronic and magnetic dipole moments induces CD signal reversal. The obtained f…
Delivery of drugs to brain is still a major challenge. Successful delivery across the blood brain barrier has only been achieved in some cases, for example pro-drugs; alternative approach is delivery to the brain by using nanoparticles. Nanotechnology is expected to bring revolutionary changes in the field of life sci…
Many studies suggest that severe plastic deformation (SPD) can produce nanocrystalline metallic structures. Based on structural characterization using transmission electron microscopy, dislocation cellular structures are indeed produced by SPD. However, should we regard such nanocellular structures as nanocrystalline?…
A 401-residue-long protein, ST0452, has been identified from a thermophilic archaeon, Sulfolobus tokodaii strain 7, as a glucose-1-phosphate thymidylyltransferase (Glc-1-P TTase) homolog with a 170-residue-long extra C-terminus portion. Functional analyses of the ST0452 protein have confirmed that the protein possesse…
We report a theoretical investigation of self-assembled nanostructures of polymer-grafted nanoparticles in a block copolymer and explore underlying physical mechanisms by employing the self-consistent field method. By varying the particle concentration or the chain length and density of the grafted polymer, one can no…
Abstract We synthesized novel liquid crystalline molecules that contain a bis(biphenyl)diacetylene mesogen and confirmed their structures by 1H NMR, 13C NMR, and FT-IR spectroscopy and mass spectrometry. These compounds formed thermotropic liquid crystals in a wide temperature region that was well characterized by opt…
Along with carbon nanotube (CNT) morphology, impurity, and fuctionalization, polymer curing cycle is another important factor in determining the mechanical properties of CNT/polymer composite samples. Nanocomposite samples were prepared by mixing multiwall carbon nanotubes with epoxy resin. The main objective is the i…
The extracellular medium-chain-length polyhydroxyalkanoate (MCL-PHA) depolymerase of Pseudomonas fluorescens GK13 catalyzes the hydrolysis of poly(3-hydroxyoctanoic acid) [P(3HO)]. Based on the strong tendency of the enzyme to interact with hydrophobic materials, a low-cost method which allows the rapid and easy purif…
The Rut pathway is composed of seven proteins, all of which are required by Escherichia coli K-12 to grow on uracil as the sole nitrogen source. The RutA and RutB proteins are central: no spontaneous suppressors arise in strains lacking them. RutA works in conjunction with a flavin reductase (RutF or a substitute) to…