Materials Literature
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Stable gold(III)–porphyrin complexes display promising in vitro cyctotoxic and anti-angiogenic activity as described in the Full Paper by C.-M. Che et al. on page 3097 ff. Strongly chelating phorphyrinato ligands were used to stabilize the gold(III) ion and the structure–bioactivity relationship of a range of compound…
A liposome is a spherical particle formed by a lipid bilayer enclosing an aqueous compartment at its center. These particles can be comprised of a variety of lipids, particularly phospholipids. They have been long considered as potential delivery devices in the medical and pharmaceutical industries because of their ab…
The fields of therapeutic and imaging ultrasound have broad medical applications. However, the inherent complexity of biological media and the nonlinear nature of ultrasound propagation at therapeutic regimes make optimization and control of the therapy still a challenging task. An accurate modeling tool for solving m…
The thermal blockage and thermal round flow in HFCVD system for CVD diamond growth will lead to un-stability of product quality. Finite element method has been used to simulate the gas flow field around the cutting tool substrate within a HFCVD diamond reactor. Experiments have been done to prove the simulation result…
Echogenic liposomes (ELIPs), encapsulating air and drug, are being developed for use as vesicles for ultrasound-mediated drug release. Both calcein and a thrombolytic drug have been encapsulated in ELIP and released with 6-MHz color Doppler ultrasound in an in vitro flow system. To elucidate the role of stable or iner…
Bi4Ti3-xNbxO12+x/2 (BNT) ceramics were prepared by a solid-state reaction method. Effects of Nb doping on dielectric and ferroelectric properties of BNT were investigated. XRD patterns show that Nb5+ substitutions do not change the phase structure. With the increase of Nb doping, dielectric constant and Curie temperat…
Article Crystal structure of [1-(2-hydroxy-5-methylbenzyl)-12,15-bis(2-oxido-5- methylbenzyl-kO)-1,12,15-triaza-3,4:9,10-dibenzo-5,8-dioxacyclo-heptadecane-k2N,N′]-(diacetato-k2O,O′)dizinc(II), Zn2(C44H49N3O5)(CH3CO2)2 was published on March 1, 2010 in the journal Zeitschrift für Kristallographie - New Crystal Structu…
The influence of sulfur on the microstructure and properties of austenite grey iron with 14-16% Ni was studied. The results showed that the crystallizing temperature of primary austenite increases and the the eutectic temperature does not changes greatly with addition of sulfur. When the content of sulfur is lower tha…
This study selected three types of organic substance as the main components of high-efficient organic grinding liquid for grinding ceramics with silicon. The grinding efficiency test was conducted on the basis of self-developed grinding mechanism and the findings indicated that the grinding performance of all these th…
Abstract Equal channel angular extrusion (ECAE) experiments of an extruded Mg–Zn–Y–Zr alloy with an intense basal texture were performed up to 8 passes at 250 and 350 °C through route Bc (billets with a rotation of 90° in the same direction between passes) and route A (without rotation between passes). It was found th…
A general concept for applying the NGR method to the synergetics of a solid body is presented. The method was used to identify the phenomenon of cyclic local magnetostriction in a Nd 2 Fe 14 B crystal for the first time.
The joining of high temperature structural ceramics to other materials is an important process commercially and technologically. Due to the existence of physical and economic limitations for the manufacture of large parts, joining is essential. Functional gradient materials (FGMs) are designed to exhibit a desirable g…
Article Crystal structure of samarium-strontium-calcium orthoaluminotantalate, (Sm0.40Sr0.50Ca0.10)(Al0.70Ta0.30)O3 was published on March 1, 2010 in the journal Zeitschrift für Kristallographie - New Crystal Structures (volume 225, issue 1).
Ziele: Das Ziel unserer Studie war die Evaluation der Iodverteilung durch dual-layer dual-energy CT zur Differenzierung von pneumonischen Infiltraten und Atelektasen. Methode: Pulmonale CTA Studien von 35 Patienten mit klinischem Verdacht auf eine Lungenarterienembolie wurden retrospektiv auf das Vorhandensein von Ate…
The results of temperature and in-field Mössbauer and magnetometric studies of the ordered Fe 100-x Al x (25<x<35 at.%) alloys are discussed. Interpretations of observed behaviour of magnetic characteristics versus temperature in terms of the model of collinear magnet with magnetic inhomogeneities on a nanometer scale…
Ziele: Ziel der Studie war es, die Auswirkungen der Bildwiederholrate auf die Effizienz MR-gestützter Interventionen zu untersuchen und die minimalen Anforderungen an die Schnelligkeit der Bildgebung zu charakterisieren. Methode: Die Messungen wurden in einem offenen 1.0 T MRT durchgeführt. Studienobjekt war ein Agaro…
$BaTiO_3$ dielectric ceramics are widely used to multi-layer ceramic capacitor. The $BaTiO_3$ powder was synthesized at $950^{\circ}C$ by using a solid state reaction and grinded by using a high-energy mill. And then, 2.53 wt% glass frit was added to the synthesized $BaTiO_3$ powders for lowering the sintering tempera…
The oriented La modified PZT thin films were prepared on Pt/Ti/SiO2/Si substrate by the LB technique. The pre-sintering temperatures and the annealing temperatures for La modified PZT were determined by TG-DTA curves and XRD detect results. XRD detection of PZT and PZT with different La amount illustrated the crystal…
A model of Moessbauer absorption taking into account the effects of the electron relaxation and the nuclear levels anticrossing simultaneously has been proposed. The dependence of the absorption deficit (transparency) on the relaxation and mixing parameters has been obtained using the stochastic theory of Moessbauer r…
We studied the optical characteristics correlated with low dielectric constants of low-k SiOCH thin films through ellipsometry. The low-k SiOCH thin films were prepared by CCP-PECVD method using BTMSM(Bis-trimethylsilylmethane) precursors deposited on p-Si wafer. The Si-O-CHx, Si-O-Si, Si-CHx, CHx and Si-H bonding gro…