Flexural Fatigue Analysis of Steel Fibrous Concrete Containing Mixed Fibers
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OPTICAL PROPERTIES OF DIAMOND-LIKE CARBON AND NANOCRYSTALLINE DIAMOND FILMS
Thin diamond-like carbon (DLC) coatings deposited by DC or RF magnetron sputtering of a graphite target in argon/methane ambients, and nanocrystalline diamond/amorphous carbon (NCD/a-C) films prepared by microwave plasma chemical vapour deposition (MWCVD) from methane/nitrogen mixtures were investigated with respect t…
Super charged [ultracapacitors]
The South Korean company, NessCap Co., is one of the about 10 makers of ultracapacitor, devices that can store so much charge that they are beginning to blur the functional distinction between the capacitor and the battery. They offer a unit rated at an impressive 5000 farads at 27 volts in a package a little bigger t…
Mössbauer spectra of CoZn-substituted Z-type barium ferrite Ba3Co2-xZnxFe24O41
10.1103/PhysRevB.72.104420
SYNTHESIS OF DESIGN, TESTING AND ANALYSIS RESEARCH ON STEEL COLUMN BASE PLATE CONNECTIONS IN HIGH-SEISMIC ZONES
ii Acknowledgments iii List of Figures vii List of Tables viii Chapter 1: Introduction 1 1.1. Background 1 1.2. Research Objectives 2 1.3. Organization of the Report 3 Chapter 2: Classification of Column Base Plate Connections 5 2.1. General Classification 5 2.2. Classification of Exposed Column Base Plates 8 2.2.1. C…
Evaluation of the activity of irradiated graphite in the Ignalina Nuclear Power Plant RBMK-1500 reactor
Ignalina NPP Unit 1 with the RBMK-1500 type reactor enters the preparatory stage for its decommissioning. A big volume of graphite has to be dismantled and managed. This paper evaluates the composition of radionuclides in irradiated graphite on the basis of the calculation scheme with computer codes MCNPX and CINDER'9…
Morphological and structural control of nanostructured <100> oriented CeO2 films grown on random metallic substrates
CeO2 (cubic fluorite) thin films have been deposited on no-rolled Hastelloy C276 substrates by metal-organic chemical vapour deposition (MOCVD) from the Ce(hfa)3·diglyme [Hhfa = 1,1,1,5,5,5-hexafluoro-2,4-pentanedione; diglyme = (CH3O(CH2CH2O)2CH3)] precursor. The X-ray patterns of all samples grown in the 350–550 °C…
Growth Inhibition by Tungsten in the Sulfur-Oxidizing BacteriumAcidithiobacillus thiooxidans
Growth of five strains of sulfur-oxidizing bacteria Acidithiobacillus thiooxidans, including strain NB1-3, was inhibited completely by 50 microM of sodium tungstate (Na(2)WO(4)). When the cells of NB1-3 were incubated in 0.1 M beta-alanine-SO(4)(2-) buffer (pH 3.0) with 100 microM Na(2)WO(4) for 1 h, the amount of tun…
Complex PbTe hopper (skeletal) crystals with high hierarchy
A facile and mild solution method has been discovered for the synthesis of complex PbTe hopper crystals in large quantities, which are highly similar to the cubic halite skeletal crystals formed from extreme supersaturation in salt lakes existing in nature. This route may provide a new approach to growing other comple…
Effects of Processing Parameters on the Fiber Diameter of Melt Blown Nonwoven Fabrics
Our air drawing model of polymers in the melt blowing process is verified by the experimental results obtained with our university’s equipment. The predicted fiber diameters tally well with the experimental data. The effects of the processing parameters on the fiber diameters are further investigated in this paper. We…
n- and p-Type behaviour of the gold-substituted type-I clathrate, Ba8AuxSi46–x (x = 5.4 and 5.9)
Two samples of the gold-substituted silicon clathrate, Ba 8 Au x Si 46– x , have been synthesized from the elements at high temperature, one without subsequent treatment (so-called AG for as-grown) and the other after annealing in a silica tube (so-called A for annealed). A structure analysis on single crystal of both…
Retrofitting Crude Oil Refinery Heat Exchanger Networks to Minimize Fouling While Maximizing Heat Recovery
The use of fouling factors in heat exchanger design and the lack of appreciation of fouling in traditional pinch approaches have often resulted in crude preheat networks that are subject to extensive fouling. The development of thermal and pressure drop models for crude oil fouling has allowed its effects to be quanti…
Enantiomeric interpenetrating 3D nets with chiral silver helicates
A new enantiomeric interpenetrating 3D nets with chiral helical coordination silver(i) polymer was achieved via self-assembly using the new ligand modular approach, in which the special helical conformation of the ligand provided the opportunity to translate chirality from one metal center to others.
A New Apparatus for the Study of Fabric Drape
A new drape elevator is developed to analyze the drape generation mechanism. The drape elevator can measure drape shape, including node generation at various stages during drape formation. The drape elevator method indicates better reproducibility of the drape coefficient of the fabrics than the conventional method. T…
Self-regulated thermal processes during quenching of steels in liquid media
The paper describes regularities of a non-stationary nucleate boiling process during quenching of steels in a liquid media. A generalised correlation for the calculation of the nucleate boiling process duration is obtained. A definition of a self-regulated thermal process that takes place during quenching is introduce…
Solid-State Synthesis of Thermoelectric Materials in Mg–Si–Ge System
Solid solution Mg2Si1−xGex for various concentration of germanium, x, is successfully prepared in single phase by the bulk mechanical alloying (BMA) and the hot pressing (HP). Both BMA and HP process conditions were optimized to yield high dense samples with fine, homogeneous microstructure. The electrical conductivit…
Synthesis, Characterisation and Biological Evaluation of Lanthanide(III) Complexes with 3-Acetylcoumarin-o-aminobenzoylhydrazone (ACAB)
Lanthanide(III) complexes of the general formula [Ln(ACAB)(2)(NO(3))(2)(H(2)O)(2)].NO(3).H(2)O where Ln=La(III), Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Tb(III), Dy(III) and Y(III), ACAB=3-acetylcoumarin-o-aminobenzoylhydrazone have been isolated and characterised based on elemental analyses, molar conductance, I…
Errors resulting from the reflectivity of calibration targets
For a microwave total-power radiometer, we consider the error introduced by neglecting the difference in the antenna reflection coefficient between when it views a distant scene and when it views a nearby calibration target. An approximate expression is presented for the error, and measurements are described that enab…
Formation of carbon micro-sphere chains by defluorination of PTFE in a magnesium and supercritical carbon dioxide system
Well-crystallized carbon micro-spheres at the sub-micrometer scale were prepared by defluorination of polytetrafluoroethylene (PTFE) with metallic magnesium in supercritical carbon dioxide at 650 °C for 6 h. The products were characterized by X-ray diffraction, transmission electron microscopy, field-emission scanning…
The highest water exchange rate ever measured for a Gd(iii) chelate
The complex [Gd(L)(H2O)]3- (H(6)L =N,N'-bis(6-carboxy-2-pyridylmethyl)ethylenediamine-N,N'-methylenephosphonic acid) displays the highest water exchange rate ever measured for a Gd(III) chelate (k(298)(ex)= 8.8 x 10(8) s(-1)), which is attributed to the flexibility of the metal coordination environment.