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Investigating the Influence of Mid-Chilling on Microstructural Development of High-Chromium Cast Iron

Dong-Shyen Yang、Tien-Sou Lei2012-08-01Materials and Manufacturing Processes

The solidification rate during the casting of high-chromium (high-Cr) cast iron determines the size and distribution of carbides in this alloy, which, in turn, influence its mechanical properties. The effects of middle-chilling processes during the casting on the microstructures of directionally solidified high-chromi…

Microstructure and Mechanical Properties of SteelsMetallurgy and Material FormingMetal Alloys Wear and Properties

A thin rivulet or ridge subject to a uniform transverse shear stress at its free surface due to an external airflow

John Sullivan、C. Paterson、Stephen K. Wilson 等 4 位作者2012-08-01Physics of Fluids

We use the lubrication approximation to analyze three closely related problems involving a thin rivulet or ridge (i.e., a two-dimensional droplet) of fluid subject to a prescribed uniform transverse shear stress at its free surface due to an external airflow, namely a rivulet draining under gravity down a vertical sub…

Surface Modification and SuperhydrophobicityFluid Dynamics and Thin FilmsIcing and De-icing Technologies

Effects of magnesium on growth and proliferation of human embryonic stem cells

Thanh Yen Nguyen、Salvador Garcia、Chee Gee Liew 等 4 位作者2012-08-01OpenAlex

The effects of magnesium on the growth and proliferation of human embryonic stem cells (hESCs) was explored to advance magnesium as an implant biomaterial. When magnesium ions from magnesium salt were added to the culture media at 10, 100, 250, 500, 750, and 1000 ppm (0.4, 4, 10, 20, 30, 40 mM) the rate of increase in…

Bone Tissue Engineering MaterialsMagnesium Alloys: Properties and ApplicationsTissue Engineering and Regenerative Medicine

An esprit-based parameter estimator for spectroscopic data

Erik Gudmundson、Petter Wirfält、Andreas Jakobsson 等 4 位作者2012-08-01OpenAlex

The pulse spin-locking sequence is a common excitation sequence for magnetic resonance and nuclear quadrupole resonance signals, with the resulting measurement data being well modeled as a train of exponentially damped sinusoidals. In this paper, we derive an ESPRIT-based estimator for such signals, together with the…

Solid-state spectroscopy and crystallographyAdvanced Electrical Measurement TechniquesNMR spectroscopy and applications

Developmental plasticity and genotype–environment interactions influence valve morphology in the Cyclotella meneghiniana species complex (Bacillariophyceae)

Yuka Shirokawa、Kenji Karino、Shigeki Mayama2012-08-01European Journal of Phycology

We investigated salinity-induced developmental plasticity and difference in the ‘reaction norm’ of clonal cultures (genotype–environment [G × E] interaction) of Cyclotella meneghiniana, isolated from different locations, and their F1 offspring. Genetic distances between strains and the phylogenetic position of each st…

Genomics and Phylogenetic StudiesDiatoms and Algae ResearchIdentification and Quantification in Food

Electrochemical Behavior of Fluorinated and Aminated Nanodiamond

Yanhui Wang、Hao Huang、Jianbing Zang 等 6 位作者2012-08-01International Journal of Electrochemical Science

Nanodiamond (ND) powder was fluorinated through direct interaction of elemental fluorine with diamond surfaces and then aminated by chemical substitution reactions using the fluorinated-ND as an intermediate. The effects of the surface terminations on electrochemical properties of ND electrodes were investigated in aq…

Graphene research and applicationsDiamond and Carbon-based Materials ResearchMolecular Junctions and Nanostructures

Tuning of Magnetic Dipolar Interactions of Maghemite Nanoparticles Embedded in Polyelectrolyte Layer-by-Layer Films

Leonardo G. Paterno、E. H. C. P. Sinnecker、M.A.G. Soler 等 6 位作者2012-08-01Journal of Nanoscience and Nanotechnology

In this study we report an experimental approach capable of tuning dipolar interactions in hybrid magnetic nanofilms produced via layer-by-layer assembly of positively-charged maghemite nanoparticles and sodium sulfonated polystyrene onto glass and silicon substrates. Morphological and magnetic properties of the as pr…

Polymer Surface Interaction StudiesElectrostatics and Colloid InteractionsCharacterization and Applications of Magnetic Nanoparticles

Anti-plasmodial action of de novo-designed, cationic, lysine-branched, amphipathic, helical peptides

Naveen Kumar Kaushik、Jyotsna Sharma、Dinkar Sahal2012-08-01Malaria Journal

BACKGROUND: A lack of vaccine and rampant drug resistance demands new anti-malarials. METHODS: In vitro blood stage anti-plasmodial properties of several de novo-designed, chemically synthesized, cationic, amphipathic, helical, antibiotic peptides were examined against Plasmodium falciparum using SYBR Green assay. Mec…

Antimicrobial Peptides and ActivitiesDendrimers and Hyperbranched PolymersAntimicrobial agents and applications

Features of magnetic and magnetoelectric properties of rare-earth multiferroic PrFe3(BO3)4 with the singlet ground state

Nadezhda V. Kostyuchenko、A. I. Popov、А. К. Звездин2012-08-01Physics of the Solid State

The features of magnetization of rare-earth multiferroic PrFe 3 (BO 3 ) 4 with the singlet ground state have been investigated theoretically. The magnetic anisotropy of the crystal has been studied. The temperature dependences of anisotropy constants have been calculated. The phase H - T diagram has been constructed.…

Multiferroics and related materialsCrystal Structures and PropertiesSolid-state spectroscopy and crystallography

Metamaterials for space physics and the new method for modeling isotropic and hyperbolic nonlinear concentrators

Yuriy Rapoport、A. Boardman、V. Grimalsky 等 5 位作者2012-08-01OpenAlex

Tunable, nonlinear and active metamaterials are discussed, as a basis of optical instrumentation and signal processing such as filters, birefringent devices, lenses etc. The new method for modeling nonlinear field and energy concentrators is reported, which includes the combination of the new version of complex geomet…

Metamaterials and Metasurfaces ApplicationsOptical Wireless Communication TechnologiesOptical and Acousto-Optic Technologies

Hyperhydrophilic rough surfaces and imaginary contact angles

Herbert P. Jennissen2012-08-01Materialwissenschaft und Werkstofftechnik

Abstract The complete wetting of rough surfaces is only poorly understood, since the underlying phenomena can neither be described by the Cassie‐Baxter nor the Wenzel equation. An experimental accessiblility by the sessile drop method is also very limited. The term “superhydrophilicity” was an attempt to understand th…

Surface Modification and SuperhydrophobicityFluid Dynamics and Heat TransferAdhesion, Friction, and Surface Interactions

Novel flexible broadband microwave absorptive fabrics coated with graphite nanosheets/polyurethane nanocomposites

Miaomiao Yu、Shaohua Chen、Zhe Zhou 等 4 位作者2012-08-01Progress in Natural Science Materials International

Graphite nanosheets (GNS) were prepared by surfactant assisted ultrasonication from expanded graphite (EG) and followed by coating onto vinylon fabrics with water-borne polyurethane (WPU). The morphology of GNS and GNS/polyurethane (PU) coatings was characterized by field emission scanning electron microscope (FESEM),…

Electromagnetic wave absorption materialsAdvanced Antenna and Metasurface Technologies

Ferromagnetism of layered GaSe semiconductors intercalated with cobalt

Z. D. Kovalyuk、V. B. Boledzyuk、Vitalii Shevchyk 等 5 位作者2012-08-01Semiconductors

The effect of a permanent magnetic field on the intercalation process and magnetic properties of GaSe single crystals and their Co 0.15 GaSe intercalants are investigated. It is shown that cobalt intercalation in gallium monoselenide exerts no effect on the parameters of the GaSe crystal lattice. In Co 0.15 GaSe inter…

Chalcogenide Semiconductor Thin FilmsCrystal Structures and PropertiesSolid-state spectroscopy and crystallography

Synthesis of Fe3O4 Nanoparticles with Tunable and Uniform Size Through Simple Thermal Decomposition

Dan Wang、Qian Ma、Ping Yang2012-08-01Journal of Nanoscience and Nanotechnology

A novel and facile method with low cost has been developed to fabricate Fe3O4 nanoparticles (NPs) with tunable and uniform sizes by the thermal decomposition of iron oleate complex. The synthesis of iron oleate complex was carried out using a reaction between oleic acid and FeCl3 x 6H2O at low temperature. The decompo…

Nanoparticle-Based Drug DeliveryNanomaterials for catalytic reactions

An Investigation into Fiber Dispersion Behavior in Water with Reference to Wet-Lay Nonwoven Technology

Dipayan Das、Bhupendra Singh Butola、S. Renuka2012-08-01Journal of Dispersion Science and Technology

This article reports on fiber dispersion behavior in water with reference to wet-lay nonwoven technology. The effects of fiber material characteristics and dispersion process conditions on the quality of the nonwoven webs were examined. The webs were characterized for their area-based uniformity by means of an imaging…

Textile materials and evaluationsAerosol Filtration and Electrostatic PrecipitationMaterial Properties and Processing

In Situ Synthesis and Properties of Epoxy Nanocomposites

Л. М. Богданова、Л. И. Кузуб、Emma Dzhavadjan 等 6 位作者2012-08-01Macromolecular Symposia

Abstract silver‐epoxy nanocomposite films based on diepoxide of Mn = 450, silver tetradecanoate and triethylamine were synthesized by in situ method. The mean diameter of AgNPs in nanocomposite films as defined by SEM technique has been found within the range of 15–20 nm. Ag NPs narrow size distribution was found inde…

Polymer Nanocomposites and PropertiesConducting polymers and applicationsPolymer Nanocomposite Synthesis and Irradiation

Electronic structure of disordered titanium monoxide TiO y depending on stoichiometry

M. G. Kostenko、A. V. Lukoyanov、V. P. Zhukov 等 4 位作者2012-08-01Journal of Experimental and Theoretical Physics Letters

The electronic structure of disordered nonstoichiometric titanium monoxide TiO y depending on the oxygen content has been studied by the supercell method in the DFT-GGA approximation with the use of pseudo-potentials. An increase in the oxygen content in TiO y leads to a decrease in the electron density of states near…

Transition Metal Oxide NanomaterialsElectronic and Structural Properties of OxidesChemical and Physical Properties of Materials

The coercivity and domain structure of Sm(CobalFe0.1CuxZr0.033)6.9 (x = 0.07, 0.10, 0.13) high temperature permanent magnets

Guangjian Wang、Chengbao Jiang2012-08-01Journal of Applied Physics

The domain structures have been found to be different in the Sm(CobalFe0.1CuxZr0.033)6.9 magnets (x = 0.07, 0.10, 0.13) with the abnormal and normal temperature dependence of coercivity by quenching at 400 °C and 600 °C, respectively. In the magnets with abnormal temperature dependence of coercivity, the domain struct…

Magnetic properties of thin filmsMagnetic Properties and ApplicationsMagnetic Properties of Alloys

Single-walled carbon nanotubes promote rat vascular adventitial fibroblasts to transform into myofibroblasts by SM22-α expression

Lin -、Xi、Liu 等 5 位作者2012-08-01International Journal of Nanomedicine

The aim of this study was to explore whether single-wall carbon nanotubes (SWCNTs) can be used as artery tissue-engineering materials by promoting vascular adventitial fibroblasts (VAFs) to transform into myofibroblasts (MFs) and to find the signal pathway involved in this process. VAFs were primary cultured and incub…

Bone Tissue Engineering MaterialsElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine

Effects of Grain Refinement on the Corrosion Behaviour of Microalloyed Steel in Sulphuric Acid Solutions

El‐Sayed M. Sherif、Asiful H. Seikh2012-08-01International Journal of Electrochemical Science

Microalloyed steels have been widely used in many applications, particularly in car bodies and other engineering parts. This is because these steels are characterized by their high strength and high ductility. The combination of strength and ductility for these steels are usually resulting from the very fine grained m…

Corrosion Behavior and InhibitionMicrostructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metals