Materials Literature
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The hydrated tris(dibenzoylmethanido)(o-phenanthroline)europium(III) complex, [Eu(DBM)3(Phen)]·xH2O, is converted efficiently into anhydrous tris(dibenzoylmethanido)(o-phenanthroline)europium(III), [Eu(DBM)3(Phen)] or [Eu(C15H11O2)3(C12H8N2)], by heating under vacuum. The title compound has been characteriz…
A shadow mask technique employing V 2 O 5 nanowires and ion-beam milling is used to define narrow lines of monolayer-encapsulated Au nanoclusters. When positioned between electrodes these lines are shown to be conducting and to have nonlinear I−V characteristics with nonzero threshold voltages consistent with Coulomb…
Stator insulation failures are a significant cause of forced outages of electrical machines. Accelerated aging tests or type tests have been developed and are now applied routinely to groundwall insulation in coils and bars used in machines to ensure satisfactory life time performance. It is generally accepted that ma…
BNFL Instruments RadScan 600 has been developed to allow the remote surveying of gamma radiation in a wide variety of environments. The device is based on a CsI crystal located in a tungsten collimator and is capable of detecting gamma rays with energies between 100 keV and 10 MeV. A colour CCD camera produces a visua…
The Pulsed Electro-Acoustic (PEA) method has been used for the measurement of space charge distribution in solid dielectric films or cable shape samples. However, the PEA system for cable shape samples had a curved surface electrode, which had the same radius curve to the outer radius of the sample cable. Therefore, i…
A MW-class, commercial prototype Westinghouse tubular solid oxide fuel cell (SOFC) power plant is being developed for demonstration by the end of this decade. A 5 MW integrated SOFC/combustion turbine power plant design for distributed power applications is shown which can achieve an efficiency approaching 70%. The re…
The use of high voltage cables is today recommended and sometimes mandatory in order to avoid environmental concerns of the public, especially when the power system crosses areas of dense population. The reunion of the former GDR with the Federal Republic of Germany has stimulated the interest in this settlement espec…
We introduce the use of the concept of continuity in symmetry and chirality as a novel descriptor of the structure of the building blocks of materials. These measures are of global nature, and take into account all angles and bond lengths of the molecular building blocks. The particular example we have selected for a…
Metalloproteins constitute a significant proportion of all known genomes. In this Article it is shown that the marriage of two synchrotron-radiation-based structural techniques, namely high-resolution crystallography and XAFS, can yield unprecedented levels of structural information that is directly relevant to the me…
This work presents a study of the influence of the winding strategy in the parameters of the flyback transformer. A frequency and geometry dependent model generated from FEM simulations has been employed in order to study the influence of the position of the windings on the leakage energy and AC resistance. A study of…
The ketals of bis(o-nitrophenyl)ethanediol and ketones or aldehydes are smoothly deprotected in neutral conditions by irradiation with 350 nm light. The chemical stability in basic, acidic, and oxidizing media makes this form of protection orthogonal to classical protecting groups. Both racemic and enantiopure forms a…
Process in polymer free volume is very important in initiation phase of electrical tree under ac stress. Electrons injected from electrode are accelerated in free volume and bombard free volume wall to produce free radical and break polymer chain. Kind of gas in free volume has a large effect on ac tree initiation. Un…
The double layer capacitor was developed in the late 1960s by the SOHIO Corporation, with further development continued by NEC and Matsushita in Japan. In 1978, a commercial product was introduced by Matsushita, the Panasonic Gold capacitor. This recent technological advancement has mainly been applied in computer mem…
This paper discusses the development and test of a prototype thermoelectric generator which is designed to use the heat of existing wood fired stoves that are typically used in the area for home heating. This generator is being developed by the Royal Institute of Technology, in Sweden, to provide small amounts of powe…
The structure of thin, aggregated layers of CuS nanoparticles, grown in Langmuir−Blodgett film precursors, was investigated with atomic force microscopy along with the study of their electrical conductivity. Very thin layers revealed an essentially insulating behavior. These layers were composed of isolated particle a…
Direct decomposition and reaction of hydrogen peroxide inside a titanium dioxide/hexadecylamine slurry dispersion results in a foaming, inorganic/organic hybrid composite material containing TiO 2 with intercalated hexadecylamine with extended, sponge-like, porous structure. The complex structure of the synthesized fo…
A semi-batch reactor method was developed for directly synthesizing undoped and doped nanometer-scale CeO 2 particles at room temperature. Powders exhibited a surface area of ≈170 m 2 /g. Control over the particle size, size distribution, and state of agglomeration could be achieved through variation of the mixing con…
The Collaborative Computational Project Number 4 (CCP4) was established in 1979 to promote collaboration between UK groups writing software for protein crystallography. CCP4 now distributes a large software suite and is active in developing new software. Equally importantly, CCP4 provides a focus for the whole protein…
The reaction of Ln(NO3)3.aq with K3[Fe(CN)6] or K3[Co(CN)6] in N,N'-dimethylformamide (DMF) led to 25 heterodinuclear [Ln(DMF)4(H2O)3(mu-CN)Fe(CN)5].nH2O and [Ln(DMF)4(H2O)3(mu-CN)Co(CN)5].nH2O complexes (with Ln = all the lanthanide(III) ions, except promethium and lutetium). Five complexes (Pr(3+)-Fe3+), (Tm(3+)-Fe3…
The anomalous thermal conductivity in spin chains observed in experiments is studied for the low temperature regime. In the effective dynamics with most realistic perturbations, the so-called Umklapp terms is irrelevant to reduce mean free path in the energy transport at even finite temperatures. This is consistent wi…