Materials Literature
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Abstract A semicrystalline polyamide polymer was processed using a new technique known as mechanical alloying. The material processed by this technique was first introduced into a high‐energy ball mill and ground over long periods of time, resulting in the production of extremely fine powders. These powders were subse…
A value of 2.71 μB for the effective magnetic moment between 100 and 300 K is determined for 1. This magnetic moment supports the assumption of a triplet ground state for 1. The bis(nitroxyl) diradical, which melts only at 180 °C with decomposition, could be characterized by X-ray crystallography. It has a distinctly…
A ferromagnetic exchange interaction that is not influenced by the distortion of the cubane framework of 1 (see picture; only the O atoms of the EtOH and dbm− ligands are shown) and is mediated by the end-on-coordinated μ3-azide bridges has been detected for the first time. Although the unusual [M4(η1-μ3-N3)4] core is…
Eighteen different collagen types have now been identified, at least five of which are found in the extracellular matrix of the heart. The interstitial collagens, types I and III are the most abundant components. Due to their tensile strength and arrangement in a network, surrounding and inter-connecting myocytes and…
Abstract Photosynthesis is one of the fascinating fields of current interdisciplinary research. It seems miraculous that nature, in the process of evolution, has managed to bring about the process of photosynthesis. The first step involves a charge separation at the reaction centers, which proceeds with 100% quantum y…
Abstract Single crystals of the hitherto unknown compound CuSbMo 2 O 8 were prepared by recrystallization from melts in closed copper tubes and investigated by X-ray diffractometer technique. CuSbMo 2 O 8 crystallizes in a new structure type with monoclinic symmetry, space group C 6 2h - I12/a1, a = 5.554(2), b = 4.91…
Abstract Dicarboxy‐terminated poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO) macromonomers were prepared and subjected to the preparation of tailor‐made aromatic thermotropic liquid‐crystalline (LC) polyester‐ graft ‐PPO copolymers. The macromonomers were obtained by hydrolysis of dimethyl carboxylate‐terminated PPO mac…
Abstract Durch Tempern der binären Oxide CsO 0,52 , NaO 0,45 , LiO 0,5 und GeO 2 im mol. Verhältnis 1,24:1,4:6,7:3,9 (Ni‐Bömbchen; 600°C/89 bzw. 65 d) wurden erstmals Einkristalle von CsNa 3 Li 8 {Li[GeO 4 ]} 4 in Form von schwachgelblichen Prismen sowie blaßgelbem Pulver erhalten: Raumgruppe I 4/ m (I. T. Nr. 87) mit…
The purpose of this paper is to present an easy method for analyzing the operating characteristics of a separate-type transformer connected to an external circuit including elements such as batteries, resistances, and diodes. This method, a combination of two- and three-dimensional finite element methods, has been app…
An extensive database of aerosol experiments exists and has been used for checking aerosol transport codes. Data for fission product vapor transport are harder to find. Some qualitative data are available, but the Falcon thermal gradient tube tests carried out at AEA Technology’s laboratories in Winfrith, England, mar…
The effect of in the sub‐parts per million range on the atmospheric corrosion of zinc has been investigated in the laboratory. Each sample was exposed individually to air with careful control of pollutant concentration, relative humidity, and flow conditions. Monitoring of concentration at the outlet of the corrosion…
Diamond films have been deposited on carbon fibers with diameters as small as 5 μm by microwave plasma assisted chemical vapor deposition. An ultrasonic pretreatment of the fibers in a bath containing methanol and diamond paste was required for successful coating of the fibers. In the absence of such treatment, the fi…
In this paper, we investigate a thin film transformer for small electronic devices. This transformer is composed of the lamination of thin film conductors. Both the primary and secondary coils of the film transformer are arranged coaxially on one layer and multiply laminated. The operation principle of the transformer…
Fourier transform infrared (FTIR) spectra and x-ray photoelectron spectra (XPS) were acquired from Cu implanted in fused silica and a borosilicate glass. The FTIR spectra indicate that Cu ion implantation in the silica and borosilicate glasses results in an intensity decrease in the Si–O stretching vibration. The Si–O…
Oriented diamond films have been grown on Si(001) and Si(111) substrates by microwave plasma chemical vapor deposition. X-ray diffractometry has been employed for pole figure measurements which have been evaluated by the component method. This technique can be applied to multiphase materials with overlapping pole figu…
Presents the objective evaluation of a stabilized garment parts handle, based on determination of mechanical and physical properties of fabrics using the Kawabata Evaluation System. Parameters that influence the handle are shown on the basis of 16 parameters of mechanical and physical properties of shell fabric, inter…
Abstract We have observed that methacrylic acid (MA) is far more corrosive than acrylic acid (AA) on copper surfaces when copper was exposed to the vapor of these two acids at ambient temperature and environment. With the aid of modern surface‐sensitive instrumentation, which included grazing angle Fourier transform i…
The influence of γ-, electrons and reactor neutrons irradiation on the optical and electrophysical properties of Gd3 Ga5 O12 single crystals is investigated. Experimental data and theoretical estimations of radiation defect concentration are compared.
Abstract The surface of hot‐dip galvanized steels is a complex system highly dependent upon the composition of the galvanization bath and upon surface treatments such as degreasing, alkaline etching and chromate conversion. In this study, industrial zinc‐coated samples are subjected to degreasing, alkaline etching and…
The physical significance of the first diffraction peak in glassy Se is discussed in the light of recent experimental results regarding the temperature dependence of the parameters characterizing the first peaks in the elastic S(Q,\ensuremath{\omega}=0) and static S(Q) structure factors. The rather different behavior…