Strongly Coupled Outer Squircle-Inner Circular Coil Architecture for Enhanced Induction over Large Areas

This paper reports a newly designed class of strongly coupled planar coil structures for the purpose of enhanced induction over large areas. These new architectures feature a squircle shape at the outer rim with rounded corners and straight sides evolved into a fully circular shape in the inner side, which proves to be essential to achieve high efficiency in arrays and all-surface inductive heating. As a proof-of-demonstration, a simple inductive heating system composed of a pair of side-by-side placed coils was constructed together with a ferrite layer. Experiments were repeated for 0° and 180° phase differences between coil currents. Here, the system efficiency was shown to be increased overall by 37.4% using outer squircle-inner circular coils instead of conventional circular coils. This comparative study indicates that the proposed coil architecture offers the potential for large-area, fast, and phase-insensitive inductive heating with high efficiency. © 1982-2012 IEEE

Search for jet extinction in the inclusive jet-pT spectrum from proton-proton collisions at s=8 TeV

Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.The first search at the LHC for the extinction of QCD jet production is presented, using data collected with the CMS detector corresponding to an integrated luminosity of 10.7  fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV. The extinction model studied in this analysis is motivated by the search for signatures of strong gravity at the TeV scale (terascale gravity) and assumes the existence of string couplings in the strong-coupling limit. In this limit, the string model predicts the suppression of all high-transverse-momentum standard model processes, including jet production, beyond a certain energy scale. To test this prediction, the measured transverse-momentum spectrum is compared to the theoretical prediction of the standard model. No significant deficit of events is found at high transverse momentum. A 95% confidence level lower limit of 3.3 TeV is set on the extinction mass scale

Searches for electroweak neutralino and chargino production in channels with Higgs, Z, and W bosons in pp collisions at 8 TeV

Searches for supersymmetry (SUSY) are presented based on the electroweak pair production of neutralinos and charginos, leading to decay channels with Higgs, Z, and W bosons and undetected lightest SUSY particles (LSPs). The data sample corresponds to an integrated luminosity of about 19.5 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV collected in 2012 with the CMS detector at the LHC. The main emphasis is neutralino pair production in which each neutralino decays either to a Higgs boson (h) and an LSP or to a Z boson and an LSP, leading to hh, hZ, and ZZ states with missing transverse energy (E-T(miss)). A second aspect is chargino-neutralino pair production, leading to hW states with E-T(miss). The decays of a Higgs boson to a bottom-quark pair, to a photon pair, and to final states with leptons are considered in conjunction with hadronic and leptonic decay modes of the Z and W bosons. No evidence is found for supersymmetric particles, and 95% confidence level upper limits are evaluated for the respective pair production cross sections and for neutralino and chargino mass values

Interactions between Portland cement and sulphonated melamine formaldehyde superplasticizer and inorganic glass fibre

SIGLEAvailable from British Library Document Supply Centre- DSC:DX95669 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Syntheses, crystal structures, spectroscopic, fluorescence and thermal properties of silver(I) 5,5-diethylbarbiturato complexes with some aminopyridines

Three new silver(I) complexes of 5,5-diethlybarbiturate (barb), [Ag(barb)(apy)]·H2O (1), {[Ag(?-ampy)][Ag(?-barb) 2]}n (2) and [Ag(barb)(dmamhpy)] (3) [apy = 2-aminopyridine, ampy = 2-aminomethylpyridine and dmamhpy = 2- (dimethylaminomethyl)-3-hydroxypyridine] have been synthesized and characterized by elemental analysis and FT-IR. Single crystal X-ray diffraction analyses showed that complexes 1 and 3 are mononuclear. In 1, the silver(I) ion is linearly coordinated by a barb anion and a ampy ligand, while a bidentate dmamhpy ligand together with an N-coordinated barb anion forms a trigonal coordination geometry around silver(I) in 3. Complex 2 is a one-dimensional coordination polymer in which silver(I) ions are bridged by ampy ligands, leading to a cationic chain [Ag(ampy)]+n. The [Ag(barb)2]- units contains two N-bonded barb ligands, bridging the silver centers in the cationic and anionic units via the carbonyl O atoms. Thus, complex 2 contains two-coordinated and four-coordinated silver ions. All complexes display hydrogen-bonded network structures and exhibit appreciable fluorescence at room temperature. Thermal analysis (TG-DTA) data are in agreement with the structures of the complexes. © 2010 Elsevier B.V. All rights reserved.F-2008/56We thank the research fund of Uludag University for the financial support given to the research project (F-2008/56)

5,5-Diethylbarbiturate complexes of silver with 2,2?-bipyridine and 3-(2-pyridyl)propanol: Syntheses, crystal structures, spectroscopic, thermal and antimicrobial activity studies

Two silver 5,5-diethylbarbiturate (barb) complexes with 2,2?-bipyridine (bpy) and 3-(2-pyridyl) propanol (pypr), [Ag(barb)(bpy)] (1) and [Ag(barb)(pypr)] (2), have been prepared and characterized by elemental analysis, IR spectroscopy, thermal analysis, and single crystal X-ray diffraction. Both complexes crystallize in the triclinic space group P1? with Z = 2. The barb ligand in 1 is N-coordinated and the bpy ligand acts as a bichelating ligand leading to an AgN3 tricoordination. Crystals of 1 feature a three-dimensional network based on N-H?O hydrogen bonding, ?(bpy)??(bpy), C-H??(bpy) and ?(bpy)-Ag interactions. In 2, the pypr and barb ligands behave as monodentate ligands through their N atoms, forming a distorted linear AgN2 coordination. Molecules of 2 are doubly bridged by N-H?O hydrogen bonds and further connected via O-H?O hydrogen bonds and aromatic ?(pypr)??(pypr) stacking interactions into a supramolecular network. Both complexes exhibit similar thermal decomposition behavior in air. The first stage corresponds to removal of the co-ligands such as bpy or pypr while the degradation of the barb moiety occurs at higher temperatures to give Ag2O. Like the barb, bpy and pypr ligands, 2 does not show any significant antimicrobial activity, but 1 is active against bacteria and fungi. © 2008 Verlag der Zeitschrift für Naturforschung

One-dimensional Cobalt(II) and zinc(II) succinato coordination polymers with nicotinamide: Synthesis, structural, spectroscopic, fluorescent and thermal properties

Cobalt(II) and zinc(II) succinato (suc) coordination polymers with nicotinamide (nia), {[Co(?-suc)(H 2O) 2(nia) 2] · 2H 2O} n (1) and {[Zn(?-suc)(H 2O) 2(nia) 2] · 2H 2O} n (2) have been synthesized and characterized by elemental analyses, magnetic moments, IR and TG-DTA. Single-crystal X-ray analyses of 1 and 2 reveal that these complexes are isostructural and crystallize in triclinic space group Complexes 1 and 2 are 1-D coordination polymers, in which the metal(II) ions exhibit an octahedral geometry with two suc, two nia and two aqua ligands. The nia ligand is N-bonded, while the suc ligand bridges the metal centers through the carboxylate groups. The 1D chains are further assembled to form 3D networks by strong N-H···O and OW-H···O hydrogen bonds. IR spectra confirm the coordination modes of both suc and nia ligands, while TG-DTA data are in agreement with the crystal structures. Fluorescent analysis in the solid state shows that all complexes display intraligand (?-?*) emissions of nia. © Springer Science+Business Media, LLC 2009

Syntheses, crystal structures, fluorescent, and thermal properties of nickel(II) 5,5-diethylbarbiturate complexes with (2-aminomethyl), (2-aminoethyl), and (2-hydroxyethyl)pyridines

Three nickel(II) complexes of 5,5-diethlybarbiturate (barb) with (2-aminomethyl)pyridine (ampy), (2-aminoethyl)pyridine (aepy), and (2-hydroxyethyl)pyridine (hepy), [Ni(barb-N)2(ampy)2] (1), [Ni(barb-N,O)(aepy)2](barb)·H2O (2), and [Ni(barb-O)2(hepy)]·2H2O (3), have been synthesized and characterized by elemental analysis, IR, thermal analysis, and single crystal X-ray diffraction. All complexes are mononuclear with nickel(II) exhibiting an octahedral coordination. Ampy, aepy, and hepy are bidentate chelating ligands, while barb shows different coordination modes. In 1, two barb ligands are N-bonded, whereas in 3 they are O-coordinated through one carbonyl oxygen. In 2, one barb is bidentate chelating, while the second barb remains outside the coordination sphere as a counterion. The molecules of 1-3 are bridged by multiple hydrogen bonds to generate 1-D or 2-D supramolecular networks. All complexes are fluorescent due to ?-?* transitions. © 2011 Taylor & Francis

Synthesis, characterization, crystal structures and thermal and fluorescence studies of dinuclear and polymeric silver(I) complexes of 5,5-diethylbarbiturate with 2,5-dimethylpyrazine and piperazine involving Ag-Ag interactions

Two silver(I) complexes, [Ag(dmpyz) 2][Ag(barb) 2] (1) and {[Ag(ppz)][Ag(barb) 2]·H 2O} n (2) (barb = 5,5-diethylbarbiturate, dmpyz = 2,5-dimethylpyrazine and ppz = piperazine), have been synthesized and characterized by elemental analyses, IR, thermal analysis (TG-DTA) and single-crystal X-ray diffraction. Complex 1 consists of [Ag(dmpyz) 2] + and [Ag(barb) 2] - ions in which the silver(I) ions are linearly coordinated by two dmpyz or two barb ligands. These two ions are connected by strong Ag-Ag interactions (Ag-Ag = 2.896 (1) Å). Complex 2 is a 1D coordination polymer in which the silver(I) ions are bridged by the ppz ligands in a linear fashion, leading to a zigzag chain of [Ag(ppz)] n +, which interacts with the [Ag(barb) 2] - units by Ag-Ag interactions of 3.183 (1) Å. The 1D chains are further assembled to form 3D networks by strong N-H···O and OW-H···O hydrogen bonds. IR spectra and TG-DTA data are in agreement with the crystal structures. The fluorescent properties of 1 were also evaluated. © 2010 Springer Science+Business Media, LLC.F-2008/56Acknowledgments We thank the research fund of Uludag University for the financial support given to the research project (F-2008/56)

Syntheses, spectroscopic, structural, fluorescent and thermal properties of bis(saccharinato)copper(II) complexes with two bis(pyridylamine) ligands

Two new copper(II) complexes of saccharinate (sac) with bis(2-pyridylmethyl)amine (bpma) and N,N'-bis[1-(pyridin-2-yl)ethylidene] ethane-1,2-diamine (bapen), [Cu(bpma)(sac)2]·H2O (1) and [Cu(bapen)(sac)2] (2), were synthesized and characterized by elemental analysis, TG-DTA, X-ray diffraction, and UV/Vis and IR spectroscopy, respectively. In 1, the copper(II) ion is coordinated by two N-bonded sac ligands, and three nitrogen atoms of bpma, in a distorted square-pyramidal coordination arrangement, whereas the arrangement around the copper ion in 2 is a distorted octahedron with two N-coordinated sac ligands and a tetradentate bapen ligand. In addition to hydrogen bonding involving the water molecule in 1, the mononuclear species of 1 and 2 are further connected by weak intermolecular C-H?? and C-H?O interactions to form a three-dimensional network. Both complexes are luminescent at room temperature and their emissions seem to be due to ligand-based ?-?* transitions. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim