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Development of anti-scale poly(aspartic acid–citric acid) dual polymer systems for water treatment

Mithil Kumar Nayunigari、Sanjay Kumar Gupta、Varaprasad Kokkarachedu 等 5 位作者2014-05-20Environmental Technology

The formation of calcium sulphate and calcium carbonate scale poses major problems in heat exchangers and water cooling systems, thereby affecting the performance of these types of equipment. In order to inhibit these scale formations, new types of biodegradable water soluble single polymer and dual poly(aspartic acid…

Calcium Carbonate Crystallization and InhibitionPolysaccharides Composition and ApplicationsMagnetic and Electromagnetic Effects

Defect interactions with stepped CeO2/SrTiO3 interfaces: Implications for radiation damage evolution and fast ion conduction

Pratik P. Dholabhai、Jeffery A. Aguiar、Amit Misra 等 4 位作者2014-05-20The Journal of Chemical Physics

Due to reduced dimensions and increased interfacial content, nanocomposite oxides offer improved functionalities in a wide variety of advanced technological applications, including their potential use as radiation tolerant materials. To better understand the role of interface structures in influencing the radiation da…

Advanced Condensed Matter PhysicsNuclear materials and radiation effectsElectronic and Structural Properties of Oxides

Influence of ceria distribution on the redox behaviour of nanoparticulated CeO 2 ‐SiO 2 systems with application in catalysis

I. Cabeza、Lucas Souto、J.M. Pintado 等 6 位作者2014-05-20Surface and Interface Analysis

Ceria has been broadly employed in many technological applications. However, because of geo‐strategic concerns, reducing the lanthanide loadings in heterogeneous catalysts while maintaining their good properties has become a main goal in many recent studies. In this work, ceria has been dispersed over two different si…

Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisCatalysis and Oxidation Reactions

Development of an Advanced Engineering Polymer from the Modification of Nylon 66 by e-Beam Irradiation

Nilay Pramanik、Ritwik Haldar、Utpal Kumar Niyogi 等 4 位作者2014-05-20Defence Science Journal

When Nylon 66 was irradiated by an optimum dose of e-beam in presence of polyurethane as impact modifierin combination with triallyl isocyanurate as cross-linker, a superior performance was observed for the irradiatednylon 66. Significant improvement of properties, such as hardness, tensile strength, flexural modulus…

Polymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and IrradiationSilicone and Siloxane Chemistry

Examination of the Porosity in Reactive Air Brazed Joints by Ultrasonic Testing

Wolfgang Tillmann、Norman Sievers、Jan Pfeiffer 等 7 位作者2014-05-20Advanced Engineering Materials

Reactive air brazing (RAB) has been developed as a method to join ceramics and steel, using CuO as a reactive agent that interacts with the surface of the ceramic, enabling a wetting by the molten filler metal. A major benefit of this method is the fact that the joining process can be carried out in an ambient atmosph…

Advanced ceramic materials synthesisAdvancements in Solid Oxide Fuel CellsElectronic and Structural Properties of Oxides

Photoinduced Directional and Bidirectional Phase Transitions in Bistable Linear Polycyclic Aromatic Compounds

Longlong Zhang、Shoji Yamamoto2014-05-20Journal of the Physical Society of Japan

We study photoinduced phase transitions in linear homocyclic and heterocyclic aromatic polymers, numerically solving the time-dependent Schrödinger equation and observing the photoinduced optical conductivity spectra along the way. All the polycyclic compounds of our interest have bistable cis–trans isomers, which are…

Photochemistry and Electron Transfer StudiesPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research

A Displacive‐Type Metal Crown Ether Ferroelectric Compound: Ca(NO3)2(15‐crown‐5)

Heng‐Yun Ye、Yu-Ling Liu、Da‐Wei Fu 等 4 位作者2014-05-20Angewandte Chemie

Abstract Following the Curie symmetry principle and Aizu rule, we discovered there is a centrosymmetric‐to‐noncentrosymmetric phase transition in Ca(NO 3 ) 2 (15‐crown‐5) at T c =205 K. The transition was confirmed by differential scanning calorimetry and second harmonic generation measurements. The transition gives r…

Crystallography and molecular interactionsNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography

Estimation of Total Phenols and Flavonoids in Selected Indian Traditional Plants

Deepak Kumar、Anupam Jamwal、Reecha Madaan 等 4 位作者2014-05-20Journal of Pharmaceutical Technology Research and Management

Traditionally, aerial parts of Abies pindrow Royle (Himalayan Fir; Pinaceae); Abies webbiana Lindl. (Talispatra; Pinaceae); Cephalandra indica Naud. (Ivy Gourd; Cucurbitaceae) and roots of Calotropis gigantea (L.) Dryand (Giant Milkweed; Asclepiadaceae) have been used in the Indian systems of medicine for the treatmen…

Ethnobotanical and Medicinal Plants StudiesPhytochemistry and Biological ActivitiesPhytochemistry and Bioactive Compounds

Synthetic strategies, sustainability and biological applications of malic acid–based polymers

Sarah L. King、Vinh X. Truong、Cathrin Kirchhoefer 等 5 位作者2014-05-20Green Materials

This review summarises the recent developments in the synthesis and applications of polymers derived from malic acid. There has been an increased interest in the design of sustainable and biodegradable polymers as a result of the drive to use renewable feedstocks as an alternative to petrochemicals in addition to thei…

biodegradable polymer synthesis and propertiesPolymer composites and self-healingSynthetic Organic Chemistry Methods

A metallic carbon consisting of helical carbon triangle chains

Meng Hu、Xiao Dong、Yilong Pan 等 6 位作者2014-05-20Journal of Physics Condensed Matter

Carbon is the basis of life on Earth and many technological applications. We computationally report an sp3-hybridization-assembled carbon allotrope constructed by helical triangle chains through the evolutionary structure prediction method. Different from the previous metallic carbon K4, this carbon, called Tri-carbon…

Graphene research and applicationsDiamond and Carbon-based Materials ResearchBoron and Carbon Nanomaterials Research

Thickness dependence of the electro-optical properties of reverse-mode polymer-stabilised cholesteric texture

Zhigang Song、Hongbo Lu、Jinliang Hu 等 10 位作者2014-05-20Liquid Crystals

The cell gap dependence of the electro-optical properties of reverse-mode polymer-stabilised cholesteric texture has been investigated. In this study, the morphology and electro-optical properties were analysed as a function of the thickness of the cells. The scanning electron microscopy indicates that the polymer net…

Liquid Crystal Research AdvancementsLipid Membrane Structure and BehaviorPhotonic Crystals and Applications

Enhancement-mode ZnO/Mg0.5Zn0.5O HFET on Si

Daqian Ye、Zengxia Mei、Huili Liang 等 11 位作者2014-05-20Journal of Physics D Applied Physics

We report a bottom-gate and enhancement-mode ZnO/Mg0.5Zn0.5O heterojunction field effect transistor (HFET) on Si. This new heterostructure which is grown by using molecular beam epitaxy (MBE) reduces interface defects and traps. By tailoring Mg composition (x) in the MgxZn1−xO barrier layer up to 50%, the Mg0.5Zn0.5O…

ZnO doping and propertiesSemiconductor materials and devicesElectronic and Structural Properties of Oxides

Influence of Underexcitation Operation on Electromagnetic Loss in the End Metal Parts and Stator Step Packets of a Turbogenerator

Likun Wang、Weili Li、Huo Feiyang 等 5 位作者2014-05-20IEEE Transactions on Energy Conversion

The leading operation of large generators is an effective method to adjust the electric reactive power surplus, and the leading-power factor was restricted by the temperature rise of the end parts. In this paper, a three-dimensional (3-D) electromagnetic field of a 330-MW water-hydrogen-hydrogen-cooled turbogenerator…

Electric Motor Design and AnalysisMagnetic Properties and ApplicationsNon-Destructive Testing Techniques

Surface Modification of PVC Film with Allylamine Plasma Polymers

Nagihan Demirci、Miyaser Demirel、Nursel Dilsiz2014-05-20Advances in Polymer Technology

ABSTRACT In this study, surface modifications of poly(vinyl chloride) (PVC) films were performed with the plasma polymerization process. For this purpose, allylamine was used as a hydrophilic polymer for surface modification of PVC films. The wettability of PVC films was investigated using contact angle measurement. T…

Polymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and IrradiationPolymer Science and PVC

Production and Characterization of Bags from Biocomposite Films of Starch‐Vegetal Fibers Prepared by Tape Casting

Ana Silvia Scheibe、Jaqueline Oliveira de Moraes、João Borges Laurindo2014-05-20Journal of Food Process Engineering

Abstract In this study, the production of starch films reinforced with cellulose fibers was performed by the tape‐casting technique, which allows preparing films with much larger dimensions, if compared with the classical casting technique. Tape casting is well known in other areas; however, there is a lack in the lit…

Nanocomposite Films for Food PackagingNatural Fiber Reinforced Compositesbiodegradable polymer synthesis and properties

The role of water and structure on the generation of reactive oxygen species in peptide/hypericin complexes

Márcia I. Souza、Emerson Rodrigo da Silva、Ygor Morais Jaques 等 6 位作者2014-05-20Journal of Peptide Science

Hybrid associates formed between peptide assemblies and fluorophores are attractive mainly because of their unique properties for biomedical applications. Recently, we demonstrated that the production of reactive oxygen species (ROS) by hypericin and their stability in excited states are enhanced upon conjugation with…

Supramolecular Chemistry and ComplexesLuminescence and Fluorescent MaterialsSupramolecular Self-Assembly in Materials

Switching Fluid Slippage on pH-Responsive Superhydrophobic Surfaces

Yang Wu、Zhilu Liu、Yong‐Min Liang 等 6 位作者2014-05-20Langmuir

Two stimuli-responsive polymer brushes, poly(dimethylaminoethyl methacrylate) and poly(methacrylic acid), were grafted from initiator-modified anodized alumina substrates to prepare two pH-responsive surfaces. By regulating the swelling states of the two polymers, water droplets can roll off or adhere onto the texture…

Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsAdhesion, Friction, and Surface Interactions

Drop-Casting Hydrogels at a Liquid Interface: The Case of Hydrophobic Dipeptides

Tao Li、Michail Kalloudis、André Zamith Cardoso 等 5 位作者2014-05-20Langmuir

Hydrophobic dipeptide molecules have been induced to self-assemble into thin interfacial films at the air-water interface via drop-casting. The mechanism involves fiberlike strands, which exist in the high-pH spreading solvent, becoming intertwined at the surface of a low-pH subphase. Atomic force microscopy (AFM) rev…

Lipid Membrane Structure and BehaviorSupramolecular Self-Assembly in MaterialsPolydiacetylene-based materials and applications

Magnetoelectric responses from the respective magneticRand Fe subsystems in the noncentrosymmetric antiferromagnetsRFe3(BO3)4(R = Eu, Gd, and Tb)

Takashi Kurumaji、Kenya Ohgushi、Yoshinori Tokura2014-05-20Physical Review B

In rare-earth ($\mathit{R}$) ferroborates, R${\mathrm{Fe}}_{3}$(${\mathrm{BO}}_{3}$)${}_{4}$ with R = Eu, Gd, and Tb, the magnetoelectric (ME) responses appear to stem from both the antiferromagnetic order of the iron (Fe) spins and the magnetic moments on the $\mathit{R}$ ions. We measured the electric polarization (…

Multiferroics and related materialsCrystal Structures and PropertiesAdvanced Condensed Matter Physics

NIR‐Responsive Upconversion Nanoparticles Stimulate Neurite Outgrowth in PC12 Cells

Yijia Guan、Meng Li、Kai Dong 等 5 位作者2014-05-20Small

Nerve regeneration is of diagnostic importance in neuroscience in regards to the treatment of degenerative disease. Owing to the ability to release rare-earth ions and produce ROS during upconversion process, upconversion nanoparticles are first reported for promoting neurite outgrowth. Different charged coating mater…

Nanoplatforms for cancer theranosticsLuminescence and Fluorescent MaterialsAnesthesia and Neurotoxicity Research