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Saddle-splay elasticity and field induced soliton in nematics

O. V. Manyuhina2012-04-02Journal of Physics Condensed Matter

The symmetry breaking Fréedericksz transitions, when a uniformly aligned nematic state is replaced by a homogeneously or periodically distorted state, have been extensively studied before. Here we analyse the influence of the saddle-splay elasticity on the non-linear ground state of a nematic liquid crystal in the pre…

Liquid Crystal Research AdvancementsNonlinear Dynamics and Pattern FormationPlant Reproductive Biology

Effects of Material Composition on Corrosion Fatigue Crack Growth of Austenitic Stainless Steels in High Temperature Water

Norman Platts、David Tice、Kevin Mottershead 等 5 位作者2012-04-02OpenAlex

Laboratory studies on austenitic stainless steels in PWR primary coolant environments have shown that the ASME XI procedures used to assess fatigue crack growth of reactor components may not always be conservative. Recent work has shown that significant environmental enhancement of growth rates can occur in this envir…

Fatigue and fracture mechanicsHydrogen embrittlement and corrosion behaviors in metalsMaterial Properties and Failure Mechanisms

Thermodynamic properties of solutions of fullerene C60 in mixtures of tetraline with carbon tetrachloride and 1,2-dichlorobenzene

A. M. Kolker、A. V. Kozlov2012-04-02Russian Journal of Physical Chemistry A

The solubility of fullerene C60 in tetraline-carbon tetrachloride and tetraline-1,2-dichlorobenzene systems in all compositions of the mixed solvent are measured in the temperature range of 298.15–338.15 K. It is found that in a mixture of tetraline with 1,2-dichlorobenzene, the solubility of C60 is considerably highe…

Carbon Nanotubes in CompositesFullerene Chemistry and ApplicationsPolymer Nanocomposite Synthesis and Irradiation

Spin dynamics of S -state ions in the filled skutterudites La 1−xRx Pt 4 Ge 12 ( R= Gd, Eu)

F. A. Garcia、Roman Gumeniuk、Walter Schnelle 等 7 位作者2012-04-02Physical Review B

A detailed study of the spin dynamics of the $S$-state ions Gd${}^{3+}$ and Eu${}^{2+}$ in the filled skutterudites La${}_{1\ensuremath{-}x}$$R$${}_{x}$Pt${}_{4}$Ge${}_{12}$ ($R=$ Gd, Eu) is reported. The spin dynamics is investigated directly by means of Gd${}^{3+}$ and Eu${}^{2+}$electron spin resonance, performed a…

Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsIron-based superconductors research

Catalytic damage of bovine serum albumin by metronidazole under ultrasonic irradiation in the presence of nano-sized TiO2 powder

J. Wang、Z. G. Wang、Xudong Jin 等 8 位作者2012-04-02Russian Journal of Physical Chemistry A

In previous work, it was found that the bovine serum albumin (BSA) could obviously be damaged by nano-sized TiO 2 powder as a sonocatalyst under ultrasonic irradiation. In this work, metronidazole (MTZ) was adopted as a sensitizer to intensify the damage of BSA molecules. It was found that the damage degree of BSA mol…

Ultrasound and Hyperthermia ApplicationsUltrasound and Cavitation PhenomenaProtein Interaction Studies and Fluorescence Analysis

Stress Corrosion Crack Growth of Alloy 52M in Simulated PWR Primary Water

M.B. Toloczko、Matthew J. Olszta、S.M. Bruemmer2012-04-02OpenAlex

This chapter contains sections titled: Introduction Experimental Results and Discussion Summary and Conclusions Acknowledgements

Fusion materials and technologiesHydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing Techniques

Mesoporous and Macroporous Brookite Thin Films Having a Large Thermal Stability Range

Kevin R. Moonoosawmy、H. Katzke、M. Es‐Souni 等 7 位作者2012-04-02Langmuir

A sol-gel chemistry approach is employed to generate mesoporous and macroporous brookite thin films using Ag ions as dopant species whose thermal stability is well above previously reported literature values for thin films. The Ag ions not only induce the formation of brookite but also participate in its enhanced ther…

Advanced Photocatalysis TechniquesCopper-based nanomaterials and applicationsLayered Double Hydroxides Synthesis and Applications

Magnetically Mediated Vortexlike Assembly of Gold Nanoshells

Jianfei Sun、Jian Dong、Dongke Sun 等 5 位作者2012-04-02Langmuir

Gold nanoshells currently attract increasing research interests due to the important role in many subjects. For practical applications, random arrangement of the nanoparticles is often unfavored so that the assembly of gold nanoshells is becoming a central issue. We here proposed to utilize time-variant magnetic field…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchNanomaterials and Printing Technologies

Güncel Sürü Zekası Optamizasyon Algoritmaları

Sinem Akyol、Bilal Alataş2012-04-02DergiPark (Istanbul University)

Optimizasyon, bir problemde belirli koşullar altında mümkün olan alternatifler içinden en iyisini seçme işlemidir. Optimizasyon problemleri için birçok algoritma önerilmiştir. Sezgisel algoritmalar, büyük boyutlu optimizasyon problemleri için, kabul edilebilir sürede optimuma yakın çözümler verebilen algoritmalardır.…

Textile materials and evaluationsDiverse Cultural and Social Studies

Using finite element method to analyze the effect of microstructure on energy absorption properties of open cell polymeric foams

Abdolhossein Fereidoon、Seid Ali Taheri2012-04-02Journal of Cellular Plastics

A lot of structural applications benefit from polymer foams and their capabilities of absorbing and dissipating energy. These kinds of materials enjoy very light weights and magnificent capacity for energy absorption. In this paper, a three-dimensional finite element method (FEM) is developed to analyze the behavior o…

Cellular and Composite StructuresPolymer composites and self-healingPolymer Foaming and Composites

Two-Color DNA Nanoprobe of Intracellular Dynamics

Joshua N. Milstein、Mike Chu、Krishnan Raghunathan 等 4 位作者2012-04-02Nano Letters

We have developed a correlation microscopy technique to follow the dynamics of quantum dot labeled DNA within living cells. The temporal correlation functions of the labels reflect the fluctuations of the DNA nanoprobe as a result of its interactions with the cellular environment. They provide a sensitive measure for…

Gold and Silver Nanoparticles Synthesis and ApplicationsAdvanced biosensing and bioanalysis techniquesMicrofluidic and Bio-sensing Technologies

Size effect in glass fiber reinforced and pure polyurethane foams in monotonic and creep compression

Anne-Gaëlle Denay、Sylvie Castagnet、Annette Roy 等 6 位作者2012-04-02Journal of Cellular Plastics

Size effects on the monotonic and creep compression behavior of closed-cell polyurethane foams is investigated experimentally. The aim is to determine a minimum representative volume of mechanical behavior for both mechanical tests. Cubic specimens of nonreinforced and glass fiber-reinforced foams are tested in compre…

Structural Behavior of Reinforced ConcreteCellular and Composite StructuresPolymer composites and self-healing