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Synchrotron X-ray Reflectivity for Characterization of the Initial ALD Growth of TaN

Yong Jun Park、Dong Ryeol Lee、Sunggi Baik2011-08-05Journal of the Korean Physical Society

We report the interface structure and the initial microstructure of TaN films, prepared by using the atomic layer deposition (ALD) method. We prepared 3-, 5-, 10-, 20-, 30-, and 50-cycled films to reveal the physical morphology of the initial growth. Since the ALD growth strongly depends on the initial surface state a…

Metal and Thin Film MechanicsSemiconductor materials and devicesCopper Interconnects and Reliability

Determination of the time constant from the time development of the induced magnetic field above superconducting cables

S. Takács2011-08-05Superconductor Science and Technology

We derived the relation between the time position tm, at which the maximum of the difference between the magnetic induction at the sample centre and the induction of the applied magnetic field appears, and the time constant τ of superconducting cables or normal metals. This enables the determination of the time consta…

Physics of Superconductivity and MagnetismMagnetic Properties and ApplicationsSurface and Thin Film Phenomena

The effect of residence time on the tensile properties of superelastic and thermal activated Ni-Ti orthodontic wires

Kathia Maria Fosenca de Britto、José Eduardo Spinelli、Antônio Eduardo Martinelli 等 4 位作者2011-08-05Materials Research

Since the 1980s, different devices based on superelastic alloys have been developed to fulfill orthodontic applications. Particularly in the last decades several researches have been carried out to evaluate the mechanical behavior of Ni-Ti alloys, including their tensile, torsion and fatigue properties. However, studi…

Shape Memory Alloy TransformationsTitanium Alloys Microstructure and Properties

An Unsymmetrical Trinickel Metal Complex with 4-Sulfobenzoate Axial Ligand: [Ni3(dpa)4(4-sb)(H2O)]×3H2O

Xiaofeng Zheng、Long‐Guan Zhu2011-08-05Crystals

An unsymmetrical trinickel metal complex, [Ni3(dpa)4(4-sb)(H2O)]×3H2O (1), where dpa is a 2,2’-dipyridylamine anion and 4-sb is 4-sulfobenzoate dianion, was synthesized and characterized by X-ray crystallography, IR, elemental analysis, fluorescence, and cyclic voltammetry. The molecular structure of 1 is a cluster wi…

Metal complexes synthesis and propertiesMagnetism in coordination complexesMetalloenzymes and iron-sulfur proteins

Development of Novel Drug Delivery Prototypes Devices for Targeted Delivery Drug Therapy at the Molecular Level in Aqueous Media

Roy George、Victoria Tamara Perchyonok Theunis Gerhardus Oberholzer2011-08-05Current Drug Delivery

A novel approach in target specific molecular prototype drug delivery system concerns the attempt to employ radical affording substances (RAS) or radical quenching substances (RQS) as prodrugs able to produce irreversible damage on the desired target and therefore to stimulate cellular apoptosis. However, radical spec…

Nanoparticle-Based Drug DeliveryCancer Research and Treatmentthermodynamics and calorimetric analyses

Synthesis and spectroscopic investigation of cationic donor‐(π‐bridge)‐acceptor dye, 4‐[N‐(5,6,7,8‐tetrahydroisoquinolinium‐5‐ylidene)methyl]‐N,N‐dialkylaniline iodide

Beata Jędrzejewska、Barbara Michalak2011-08-05Coloration Technology

The synthesis and fundamental spectroscopic properties of eight hemicyanine (HC) dyes are presented. The dyes were prepared by the condensation of N‐methyl‐5,6,7,8‐tetrahydroisoquinolinium iodide with p‐(N,N‐dialkylamino)benzaldehydes. The compounds were characterised by nuclear magnetic resonance spectroscopy and the…

Photochemistry and Electron Transfer StudiesDyeing and Modifying Textile FibersPhotochromic and Fluorescence Chemistry

Coordination Tendency of N-Acetylamino Acids, Nucleotides, and DNA Toward the Luminescent Bioprobes Tb(III)-Bathophenanthroline or Tb(III)-Anthracene-9-Carboxylic Acid

Hassan A. Azab、Salem S. Al-Deyab、Zeinab M. Anwar 等 4 位作者2011-08-05Journal of Chemical & Engineering Data

The solid complex Tb(III)-bathophenanthroline (Bphen) was synthesized and characterized by elemental analysis, IR spectra, and thermalanalysis. The formation of binary and ternary complexes of Tb(III) with N -acetylamino acids ( N -acetylaspartic acid, N -acetylhistidine, and N -acetylhistamine), and Bphen or anthrace…

Metal complexes synthesis and propertiesLanthanide and Transition Metal ComplexesElectrochemical Analysis and Applications

Molecular cloning and expression analysis of a selenium-independent glutathione peroxidase identified from Manila clam Venerupis philippinarum

Lei Zhang、Xuanxuan Ning、Leilei Chen 等 8 位作者2011-08-05Aquaculture Research

Glutathione peroxidase (GPx) is a key enzyme of cellular detoxification systems that defend cells against reactive oxygen species. It can be divided into selenium-dependent GPx (Se-GPx) and selenium-independent GPx (non-Se-GPx) subfamilies. In this study, the full-length cDNA of a non-Se-GPx was identified from Veneru…

Selenium in Biological SystemsRedox biology and oxidative stressAdvanced Nanomaterials in Catalysis

Liquid–Liquid Interfacial Nanomolding

Jun Haeng Lee、Yong Man Lee、Young Hun Kim 等 6 位作者2011-08-05Small

Nanoscale interfaces that form between two immiscible liquids can be harnessed to create patterned nanoarray structures. Pattern formation is achieved with nanodrop effusion of an uncured prepolymer of polydimethylsiloxane by mechanically compressing the wrinkle-patterned mold, followed by UV-assisted molding of the n…

Advanced Materials and MechanicsPickering emulsions and particle stabilizationElectrowetting and Microfluidic Technologies

First-Order Phase Transition in a New CaCu5-Related Antimonide, CePt5Sb

Leonid Salamakha、E. Bauer、H. Michor 等 12 位作者2011-08-05Chemistry of Materials

A new CaCu 5 related antimonide, CePt 5 Sb, has been identified. This ternary compound undergoes a structural phase transition at about 80 K according to room- and low-temperature X-ray and neutron diffraction, and measurements of electrical resistivity, specific heat and magnetism. The room temperature phase forms a…

Rare-earth and actinide compoundsIron-based superconductors researchMagnetic Properties of Alloys

Manganese(II) octauranium(IV) heptadecasulfide

George N. Oh、James A. Ibers2011-08-05Acta Crystallographica Section E Structure Reports Online

Single crystals of manganese(II) octa-uranium(IV) hepta-deca-sulfide, MnU(8)S(17), were grown from the reaction of the elements in a RbCl flux. MnU(8)S(17) crystallizes in the space group C2/m in the CrU(8)S(17) structure type. The asymmetric unit is composed of the following atoms with site symmetries shown: U1 (1),…

Magnetism in coordination complexesRadioactive element chemistry and processingLanthanide and Transition Metal Complexes

Morphological characterization and electrochemical/electrical properties of poly(N‐vinyl carbazole)/montmorillonite composites

Argun Talat Gökçeören、Candan Erbil2011-08-05Polymer Composites

Abstract A series of poly(N‐vinyl carbazole) (PNVCz)/sodium montmorillonite (Na+MMT) and PNVCz/organo‐MMT composite materials have been successfully prepared by in situ free radical polymerization with cerium ammonium nitrate (CAN) as initiator in the presence of inorganic nanolayers of hydrophilic Na+MMT or organophi…

Polymer Nanocomposites and PropertiesConducting polymers and applicationsPolymer Nanocomposite Synthesis and Irradiation

Investigation of 2-Fold Disorder of Inhibitors and Relative Potency by Crystallizations of HIV-1 Protease in Ritonavir and Saquinavir Mixtures

Folasade M. Olajuyigbe、Nicola Demitri、Silvano Geremia2011-08-05Crystal Growth & Design

HIV-1 protease (PR) was cocrystallized in competitive mixtures of saquinavir (SQV) and ritonavir (RTV) in an attempt to compare the relative potencies of inhibitors using a crystallographic approach. The mixture ratio of the RTV/SQV was in the range of 1:1 to 50:1. The crystal form obtained with 1:1 and 5:1 ratios of…

HIV Research and TreatmentHIV/AIDS drug development and treatmentEnzyme Structure and Function

Superconducting properties of PIT-processed MgB2tapes using Mg(BH4)2precursor

Hiroki Fujii、K. Ozawa2011-08-05Superconductor Science and Technology

We have fabricated MgB 2 superconducting tapes with a powder-in-tube (PIT) technique using Mg(BH 4 ) 2 precursor. Heat treatment decomposes Mg(BH 4 ) 2 and subsequently forms MgB 2 as nearly single phase. Although the tapes carry supercurrent at 4.2 K and 0 T, the transport critical current ( I c ) values of the tapes…

Physics of Superconductivity and MagnetismHydrogen Storage and MaterialsSuperconductivity in MgB2 and Alloys

catena-Poly[[bis[[bis(3-aminopropyl)amine-κ3N,N′,N′′](thiocyanato-κN)cadmium]-μ4-sulfato-κ4O,O:O′,O′] methanol hemisolvate]

J. Boeckmann、Christian Näther2011-08-05Acta Crystallographica Section E Structure Reports Online

The asymmetric unit of the title compound, {[Cd(2)(NCS)(2)(SO(4))(C(6)H(17)N(3))(2)]·0.5CH(3)OH}(n), consists of two Cd(2+) cations, two thio-cyanate and one sulfate anion, two bis-(3-amino-prop-yl)amine co-ligands and one methanol molecule with half-occupancy. Each Cd(2+) cation is coordinated by four N atoms of one…

Metal-Organic Frameworks: Synthesis and ApplicationsCrystal structures of chemical compoundsLanthanide and Transition Metal Complexes

Poly[[tetraaquabis(μ3-pyridine-2,6-dicarboxylato)(μ2-pyridine-2,6-dicarboxylato)dilanthanum(III)] dihydrate]

Shie Fu Lush、Fwu Ming Shen2011-08-05Acta Crystallographica Section E Structure Reports Online

There are two independent La(III) cations in the polymeric title compound, {[La(2)(C(7)H(3)NO(4))(3)(H(2)O)(4)]·2H(2)O}(n). One is nine-coordinated in an LaN(2)O(7) tricapped trigonal-prismatic geometry formed by three pyridine-2,6-dicarboxyl-ate anions and two water mol-ecules, while the other is ten-coordinated in a…

Metal-Organic Frameworks: Synthesis and ApplicationsCrystal structures of chemical compoundsMagnetism in coordination complexes

Bis{2-[(2-hydroxy-2-methylpropyl)iminomethyl]-4-nitrophenolato}nickel(II) dimethylformamide monosolvate

K. Ayikoe、Yilma Gultneh、Ray J. Butcher2011-08-05Acta Crystallographica Section E Structure Reports Online

In the title compound, [Ni(C(11)H(13)N(2)O(4))(2)]·C(3)H(7)NO, the Ni(II) ion is octa-hedrally coordinated in an N(2)O(4) environment by two identical Schiff base ligands. The Ni-O bond lengths range from 2.004 (2) to 2.106 (2) Å, while the Ni-N bond lengths are 2.038 (2) and 2.0465 (19) Å. The cis bond angles range f…

Metal complexes synthesis and propertiesCrystal structures of chemical compoundsMagnetism in coordination complexes

THE VARIATION OF EXCHANGE CONSTANT AND MAGNETOCALORIC EFFECT IN LaFe 13-x Si x (x = 1.6, 1.9 AND 2.2) COMPOUNDS

T. İzgi、V.S. Kolat、H. Gencer 等 4 位作者2011-08-05International Journal of Modern Physics B

In this work, we present the variation of exchange constant (J exc ) and magnetocaloric effect (MCE) in LaFe 13-x Si x (x = 1.6, 1.9 and 2.2) compounds. NaZn 13-type LaFe 13-x Si x intermetallic compounds were prepared by arc melting in an atmosphere of highly pure argon gas. X-ray results indicated a slight decrease…

Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsMagnetic Properties of Alloys

Redetermination of despujolsite, Ca3Mn4+(SO4)2(OH)6·3H2O

M. C. Barkley、Hexiong Yang、S. H. Evans 等 5 位作者2011-08-05Acta Crystallographica Section E Structure Reports Online

The crystal structure of despujolsite [tricalcium manganese bis-(sulfate) hexahydroxide tri-hydrate], the Ca/Mn member of the fleischerite group, ideally Ca(3)Mn(4+)(SO(4))(2)(OH)(6)·3H(2)O, was previously determined based on X-ray diffraction intensity data from photographs, without H-atom positions located [Gaudefro…

Crystal structures of chemical compoundsCrystal Structures and PropertiesX-ray Diffraction in Crystallography

Shear-induced metastable states of end-grafted polystyrene

Leslie A. Sasa、Eric J. Yearley、Michael S. Jablin 等 7 位作者2011-08-05Physical Review E

The in situ molecular scale response of end-grafted polystyrene to shear against a deuterated polystyrene melt was investigated with neutron reflectometry. The derived grafted polystyrene density profiles showed that the grafted polystyrene was retained on the quartz wafer during the measurements. The profiles suggest…

Polymer crystallization and propertiesPolymer Surface Interaction StudiesForce Microscopy Techniques and Applications