Materials Literature
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PRIMARY OBJECTIVE: Experimental and clinical studies have suggested that magnesium has neuroprotective and vasodilatation properties. A meta-analysis was conducted to assess the effectiveness and safety of intravenous magnesium therapy in patients with aneurysmal subarachnoid haemorrhage (SAH). RESEARCH DESIGN: Meta-a…
In this paper, we formulate a generalized theoretical model to describe the nonlinear dynamics observed in combined frequency-amplitude modulators whose characteristic parameters exhibit a nonlinear dependence on the input modulating signal. The derived analytical solution may give a satisfactory explanation of recent…
Destruction of polychlorinated aromatic compounds was carried out over spinel-type catalysts XY2O4 (where X = Mg, Ca, Cu, Ni, Zn, and Y = Al, Fe). The catalysts were characterized by XRD, nitrogen adsorption-desorption isotherms and FTIR. The performance of these catalysts toward the decomposition of hexachlorobenzene…
Unsaturated organoiridium complexes were prepared with amidophenolate ligands derived from 2-(2-trifluoromethyl)amino-4,6-di- tert -butylphenol (H 2 t BA F ) and 2- tert- butylamino-4,6-di- tert -butylphenol (H 2 t BA tBu ). The following 16e complexes were characterized: Cp*M( t BA R ) with M = Ir ( 1 F and 1 t-Bu ),…
Our previous studies showed that a mechano-active scaffold made of poly(L-lactide-co-epsilon-caprolactone) (PLCL) exhibited a high potential to realize the formation of a functional, engineered cartilage in vitro. This animal study therefore was designed to investigate the feasibility of repairing on osteochondral def…
In this paper, we present an artificial muscle actuator based on a dielectric elastomer called the “multistacked actuator.” The actuator is made from a new material, the synthetic elastomer, developed by the authors. The proposed actuator is configured with multiple stacked synthetic elastomer films coated with compli…
A recently proposed pathway for the scrambling of axial (uranyl) and equatorial O atoms in [UO(2)(OH)(4)](2-) (1) is refined using Car-Parrinello molecular dynamics (CPMD) simulations in an explicit solvent (water) and with model counterions (NH(4)(+)). According to constrained CPMD/BLYP simulations and thermodynamic…
Switched reluctance machines (SRMs) are normally designed and applied as 6/4 or 8/6 single-channel SRMs. However, recent efforts with 12/8 dual-channel SRMs (DCSRMs) have spurred interest. The 12/8 DCSRM is driven by two independent sets of power electronic circuits with dual control channels, and the two channels wou…
The capacitance of the double layer formed at a metal/ionic-conductor interface can be remarkably large, so that the apparent width of the double layer is as small as 0.3 A. Mean-field theories fail to explain such large capacitance. We propose an alternate theory of the ionic double layer which allows for the binding…
This paper proposes a neural network model of a 500-W proton exchange membrane (PEM) fuel cell. The nonlinear autoregressive moving average model of the PEM fuel cell with external inputs is developed using the recurrent neural networks. The data required to train the neural network model is generated by simulating th…
Nitrosylation of [PPN](2)[(ONO)(2)Fe(eta(2)-ONO)(2)] [1; PPN = bis(triphenylphosphoranylidene)ammonium] yields the nitrite-containing {Fe(NO)}(7) mononitrosyliron complex (MNIC) [PPN](2)[(NO)Fe(ONO)(3)(eta(2)-ONO)] (2). At 4 K, complex 2 exhibits an S = (3)/(2) axial EPR spectrum with principal g values of g( perpendi…
Twelve Cu(I) coordination polymers, [CuCl(L1)] n ( 1 ), [Cu 4 I 4 (L1) 2 ] n ( 2 ), {[Cu 2 I 2 (L1)]·0.5I 2 } n ( 3 ), [Cu 3 I 3 (L1)] n ( 4 ), [Cu 2 Br 2 (L1)] n ( 5 ), [CuBr(L1)] n ( 6 ), [Cu 2 Cl 2 (L1)] n ( 7 ), [Cu 2 Br 2 (L2)] n ( 8 ), [CuBr(L2)] n ( 9 ), [CuI(L2)] n ( 10 ), [Cu 3 I 3 (L2)] n ( 11 ), and Cu 2 I…
Using photoemission electron microscopy, we study the magnetization orientation in single 5-25 nm iron particles coupled to a ferromagnetic cobalt support. We find a noncollinear alignment between the particle and substrate magnetization above a particle size of approximately 6 nm and a parallel alignment for smaller…
Porous metals (sintered beads and meshes) have been used for many years for different orthopedic applications. Metal foams have been recently developed. These foams have the advantage of being more porous than the traditional coatings. Their high porosity provides more space for bone ingrowth and mechanical interlocki…
Ultrasound-induced opening of the blood-brain barrier (BBB) is an emerging technique for targeted drug delivery to the central nervous system. Gap junctions allow transfer of information between adjacent cells and are responsible for tissue homeostasis. We examined the effect of ultrasound-induced BBB opening on the s…
A synthesis of [2]rotaxanes in which Zn(II) or Cu(II) Lewis acids catalyze a Diels-Alder cycloaddition to form the axle while simultaneously acting as the template for the assembly of the interlocked molecules is described. Coordination of the Lewis acid to a multidentate endotopic 2,6-di(methyleneoxymethyl)pyridyl- o…
Interest in uniform multifunctional magnetic particles is driven by potential applications in biomedical and materials science. Here we demonstrate the fabrication of highly tailored nanoscale and microscale magneto-polymer composite particles using a template based approach. Regiospecific surface functionalization of…
The use of spin-transfer torque (STT) devices for memory design has been a subject of research since the discovery of the STT on MgO-based magnetic tunnel junctions (MTJs). Recently, MTJ-based computing architectures such as logic-in-memory have been proposed and claim superior energy-delay performance over static CMO…
We investigate the thermal and transport properties of CexLa1-xRu2Al10 to clarify the origin of the recently discovered mysterious phase below T0=27 K in CeRu2Al10 where a large magnetic entropy is released, however, the existence of an internal magnetic field is ruled out by 27Al-NQR measurement. We find that T0 decr…
In this study, we investigated cellular biocompatibility in vitro and segmental bone defect repairing efficacy in vivo of a previously reported fibre-reinforced scaffold, nano-hydroxyapatite/collagen/poly (L-lactic acid) (PLLA)/chitin fibres (nHACP/CF). First, attachment, proliferation, and differentiation of the goat…