Materials Literature
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A new polidentade ligand, N-(2-hydroxybenzyl)-N-(2-pyridylmethyl) [(3-chloro)(2-hydroxy)]propylamine (H2BPClNOL), was synthesized and two Fe2III complexes containing the FeIII(m-alcoxo)2FeIII core were structurally and magnetically characterized. Complex [Fe2(BPClNOL)2(OAc)]ClO4 (1) differs from complex [Fe2(BPClNOL)2…
The influence of a continuous sound field on the first oscillation cycle and on the cavitation luminescence of a transient laser-induced bubble is investigated experimentally. The variation of the collapse phase is predicted with a simple numerical model and compared with experiment. Bubble dynamics is mainly influenc…
We present a novel algorithm for generating polymer entanglement networks and apply it to polypropylene/polyamide interfaces strengthened with graft copolymers. Our guides for the generation of the polymer network are the configurational distribution functions derived from a self-consistent mean-field lattice theory o…
Analytical formulae for all Laue groups are derived, giving the dependence of the residual elastic strain measured by X-ray and neutron diffraction on the direction in the sample and on the Miller indices. These formulae are valid for isotropic polycrystals in the limits of the Reuss and Voigt approximations and are a…
Six polyamideimides (PAI) were synthesized from six dianhydride monomers containing amide functions. The dianhydride monomers were obtained from the reaction of trimellitic anhydride chloride with six aromatic diamines—1,4-phenylenediamine, 2,2-bis(4-aminophenyl) propane, 4,4′-oxydianiline, 4,4′-methylenedianiline, 1,…
Phase stability and effects of sintering atmosphere on the crystalline structure of Np‐doped yttria‐stabilized zirconia (YSZ) were evaluated in comparison with those same properties and conditions for Ce‐doped YSZ. Different sintering atmospheres for Ce‐doped YSZ led to differences in phase formation through reduction…
The optical properties of Ag-TiO2 nanocermet thin films are studied with the aim of optical filtering applications. Beyond the classical properties of cermets with noble metal inclusions predicted by the effective medium theories, the optical properties of Ag-TiO2 nanocermets deposited by R.F. co-sputtering are govern…
The title compound, β-tetrakis(2,3,4,5,6-pentaphenylbenzene) phthalocyanine, was prepared by cyclotetramerization of 4-(2,3,4,5,6-pentaphenylbenzene)phthalonitrile, in the presence of hydroquinone. The phthalonitrile derivative was synthesized by a Diels−Alder reaction between 4-(phenylethynyl)phthalonitrile and tetra…
OBJECTIVE: A study was performed to evaluate the use of native fluorescence imaging to detect in situ molecular changes. SUMMARY BACKGROUND DATA: There is no ideal noninvasive method to monitor molecular changes in a local region at a laser weld joint without removing a section of tissue for histological examination.…
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Thermogravimetric analyses (TGAs) of SiC–SiO2 powder mixtures have been carried out at temperatures ranging from 1400 to 1700 °C under an atmospheric pressure of Ar (104 kPa). Correlation with thermodynamic calculations allows us to suggest a reaction path leading to the generation of gaseous silicon oxide [SiO(g)]. T…
High quality NiO x thin films have been prepared by the sol–gel technique following alternative routes to the classic metal alkoxide route. Using nickel (II) diacetate as precursor reagent, a nickel complex was deposited on glass substrates. The nickel complex transforms to NiO x after a heat treatment in air above 25…
Development and Deployment of a Scale Squeeze Enhancer and Oil-Soluble Scale Inhibitor To Avoid Deferred Oil Production Losses During Squeezing Low-Water Cut Wells, North Slope, Alaska M.M. Jordan; M.M. Jordan NEEC Search for other works by this author on: This Site Google Scholar C.J. Graff; C.J. Graff NEEC Search fo…
An Erratum has been published for this article in Applied Organometallic Chemistry 2001; 15(4):317. The preparation of polyzirconoxanes (EG-PZO) was investigated by a one-pot reaction of zirconium oxychloride octahydrate with ethylene glycol. Triethylamine was added dropwise into a mixture of zirconium oxychloride oct…
Magnetization reversal was studied in hybrid magnets consisting of ferrite and ribbons of the Magnequench alloy MQP-Q (Nd2Fe14B+α-Fe). Recent studies of demagnetization processes in permanent magnets have used two different methods for determining the reversible magnetization, often arriving at conflicting results. Th…
The sigma54 RNA polymerase holoenzyme functions in enhancer-dependent transcription. The structural organization of the sigma54 subunit of bacterial RNA polymerase in solution is analyzed by synchrotron x-ray scattering. Scattering patterns are collected from the full-length protein and from a large fragment able to b…
The spatial arrangements of sodium cations for a series of sodium phosphate glasses, x Na 2 O·(100- x )P 2 O 5 ( x ≤ 55), were investigated using 23 Na spin−echo NMR spectroscopy. The spin−echo decay rate is a function of the Na−Na homonuclear dipolar coupling, and is related to the spatial proximity of neighboring Na…
The most frequently observed focal conic domains (FCD's) in lamellar phases are those based on confocal paris of ellipse and hyperbola. Experimentally, the eccentricity of the ellipse takes a broad range of values 0</=e<1. We present an analytical expression for the curvature energy of a FCD that is valid in the entir…
We report an abnormal room-temperature magnetoresistance behavior in self-doped ${\mathrm{Ag}}_{2+\ensuremath{\delta}}\mathrm{Te}$ films with Ag doping concentration $\ensuremath{\delta}<~0.25.$ Both positive magnetoresistance and negative magnetoresistance are found with the magnetic field applied along perpendicu…
PURPOSE: To study the biocompatibility of a bovine type I collagen preparation as a material for small-vessel stent-grafts in rabbits. MATERIALS AND METHODS: A composite nitinol-collagen endovascular stent-graft with a 4-mm inner diameter was deployed in the abdominal aorta in nine rabbits. Angiography was performed,…