Materials Literature
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Measurements of optical transmission in the visible spectral range of N+ irradiated thin films of multiwall carbon nanotubes (MWCNTs) at various doses prepared by a vacuum filtration method are reported. An increase in optical transmission was observed corresponding to increase in N+ ion doses. Changes in Raman spectr…
Abstract Manganese oxide nanocrystals are combined with aluminum oxide nanocrystals to improve their crystallinity via calcination without a significant increase of crystal size. A nanocomposite, consisting of two metal oxides, can be synthesized by the reaction between permanganate anions and aluminum oxyhydroxide ke…
Geometry, hardness and size can be considered the most important characteristics affecting the wear rate caused by abrasive particles. The combined effect of these characteristics on wear has not yet been modeled as a whole. One particular model, proposed by Rabinowicz et al. (1961), involves a single particle being c…
This paper presents an improved integration-type E&S modeling for applications under high magnetic flux density conditions. In the conventional integration-type dynamic E&S modeling, we assumed linear increment of higher harmonic components including in the magnetic field strength waveforms versus the magnetic flux de…
Two new polytungstate-based compounds, [Co(mbpy)3][W6O19] (1) and [Ni(mbpy)3]2[VW12O40] (2) (mbpy = 4,4′-dimethyl-2,2′-bipyridyl), have been hydrothermally synthesized and characterized by IR spectroscopy, TG analysis, and single-crystal X-ray diffraction. Single crystal X-ray structural analyses demonstrate that the…
Having many advantages compared to classic wire wound technology; planar magnetic components are largely used. Modeling tools are required to help designers for less time consuming conception. Nevertheless, number of adapted modeling solutions is limited by the complexity of such geometries. The determination of appro…
The thermal conductivity \ensuremath{\kappa} of the ferroelectric, paraelectric, and incommensurate phases of polycrystalline Sn${}_{2}$P${}_{2}$S${}_{6}$ has been measured in the 0.1--0.7 GPa range. The thermal conductivity \ensuremath{\kappa} of the ferroelectric phase decreases with increasing pressure $p$. This un…
2.1 Linear unbranched' structures 2.1.1 Wood: Hierarchical structuring and microfibril angle There exist numerous applications in which wood, wood pulp and natural fibers are used as components in the manufacturing of composites (e.g., Gindl & Jeronimidis 2004) for improving mechanical, thermal or other beneficial pro…
In this paper, the cisplatin composite micro/nanofibers were prepared by electrospinning. Average diameter of the typical products was about 700 nm, and cisplatins were incorporated in biodegradable poly (L-lactic acid) fibers. The controlled release of cisplatin can be gained for long time. The possible mechanisms of…
This paper presents a generalized Chua-type vector hysteresis model to describe both the static and dynamic vector magnetic properties of electrical steel sheets. The proposed model takes into account all significant harmonic components of the measuredH-waveforms, thus it provides precise prediction ofH-waveforms even…
Radiation damage in macromolecular crystallography has become a mainstream concern over the last ten years. The current status of research into this area is briefly assessed, and the ten new papers published in this issue are set into the context of previous work in the field. Some novel and exciting developments emer…
Nanocrystalline diamond (NCD) thin films are being progressively more employed in different applications. However, the current understanding of their growth mechanisms, which becomes important to properly tune their properties, is still very limited. In this context, we have studied by atomic force microscopy the grow…
We describe the application of quantitative evaluation of mineralogy by scanning electron microscopy in combination with techniques commonly available at hard X-ray microprobes to define the mineralogical environment of a bauxite residue core segment with the more specific aim of determining the speciation of trace me…
Learning from Biosilica: Nanostructured Silicas and Their Coatings on Substrates by Programmable Approaches
By means of an electron diffraction technique, crystal-lattice modulations were investigated for a hexaferrite, Ba${}_{0.5}$Sr${}_{1.5}$Zn${}_{2}$Fe${}_{12}$O${}_{22}$, showing a helimagnetic order below ${T}_{\mathrm{N}}=320$ K. We observed a lattice modulation with a wave vector $\text{Q}=(0,0,3\ensuremath{\delta})$…
The first high nuclearity, mixed-metal Bi(III)/Mn(IV) and Bi(III)/Mn(III) complexes are reported. The former complexes are [Bi(2)Mn(IV)(6)O(9)(O(2)CEt)(9)(HO(2)CEt)(NO(3))(3)] (1) and [Bi(2)Mn(IV)(6)O(9)(O(2)CPh)(9)(HO(2)CPh)(NO(3))(3)] (2) and were obtained from the comproportionation reaction between Mn(O(2)CR)(2) a…
Distribution transformers losses are equal to almost 2% of the electricity generated worldwide and only in the European Union are estimated at about 33 TWh/year. Approximately 75% of the total losses are due to core losses as a result of the loading characteristics of distribution transformers. Design of the joints of…
A series of new zinc phthalocyanine dendrimers with an increasing branched shell of oligoethylene glycol end groups has been synthesized. Owing to the presence of these hydrophilic termini at the dendrimer surface, all compounds are highly soluble in a wide range of solvents including water. The monodispersity of the…
A novel PAA-b-PLGA diblock copolymer is synthesized and characterized that has excellent cell adhesion and biocompatibility. Fluorescent DiO labeling is used to monitor the attachment and growth of hASCs on the film surface, and cell proliferation over time is studied. Results show that PLLA modified by a CS/PAA-b-PLG…
This paper introduces a dynamic finite element model for calculating iron loss in ferromagnetic non-oriented grain laminations under pulse-width modulation (PWM) excitation. The proposed methodology accounts for static hysteresis, classical eddy currents and anomalous losses and has been validated by measurements in E…