Materials Literature
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We present a general approach, which enables preparation of multifunctional nanocomposites of monodisperse nanoparticles embedded in oxide matrices. The two-step route has been successfully applied to nanocomposites composed of CoFe2O4 nanoparticles embedded in high-K oxide matrices (ZrO2, Al2O3 and TiO2). First, hydr…
Kurzfassung Der Werkstoff 7CrMoVTiB10-10 (T24) wurde als warmfester Stahl für den Einsatz in der Membranwand neuer Kohlekraftwerke der 600/620°C-Klasse entwickelt. Trotz seiner umfangreichen Qualifizierung kam es zu Schäden bei der Inbetriebnahme durch Spannungsrisskorrosion. Zur Reduzierung der Spannungsrisskorrosion…
Tissue Engineering is a new emerging field that offers many possibilities to produce three-dimensional and functional tissues like ligaments or scaffolds. The biocompatibility of these materials is crucial in tissue engineering, since they should be integrated in situ and should induce a good cell adhesion and prolife…
이 연구에서는 비스-디메틸아미노메틸 포스핀산, 비스-디에틸아미노메틸 포스핀산, 비스-디부틸아미노메틸 포스핀산을 붓으로 칠한 리기다 소나무의 연소성을 시험하였다. 15 w%의 비스-디알킬아미노알킬 포스폰핀 수용액으로 리기다 소나무에 3회 붓칠하여 실온에서 건조시킨 후, 콘칼로리미터(ISO 5660-1)를 이용하여 그의 연소성을 시험하였다. 그 결과, 비스-아미노알킬 포스핀산 유도체로 처리한 시험편은 처리하지 않은 시험편에 비하여 그의 연소 억제성을 부분적으로 향상시켰다. 특히 비스-디에틸아미노메틸 포스핀산으로 처리한 시험편은 미처리 시험편에 비해 각각 낮은 총 열방출…
In this project, we prepared biomimetic nanocomposite scaffolds from gelatin and chitosan and hydroxyapatite and subsequently the scaffolds were evaluated by common used bulk technique. For this purpose, the nanocomposite hydrogel/apatite bone tissue engineering scaffolds were fabricated using applied biomimetic metho…
The authors gratefully acknowledge financial support from 'ESNAM: European Scientific Network for Artificial Muscles' (COST Action MP1003). YG and CH gratefully acknowledges financial support from the Science Foundation of Ireland (Grant SFI 07/IN.1/I1862) and the Ministry of Education and Science of the Russian Feder…
The photodarkening phenomenon in alumino-silicate glass preforms, doped with different ytterbium concentrations, was studied. The UV band, comprised between 180 and 350 nm, was examined before and after irradiation at 976 nm. The non-linear dependence of 240 nm band with concentration after infra-red irradiation was d…
The electrical conduction mechanism in La3Ta0.5Ga5.3Al0.2O14 (LTGA) single crystals was studied by nonstoichiometric defect formation during crystal growth. Since stoichiometric LTGA is not congruent, the single crystal grown from the stoichiometric melt was Ta-poor and Al-rich, where Al atoms were substituted not onl…
A series of hydrogen terminated polydimethylsiloxanes (PDMS-H) had been controlled synthesized via ring-opening polymerization. Then, methylmethacrylate (MMA) and tert-butyl methacrylate (tBMA) were grafted to PDMS-H via hydrosilylation reactions in the presence of Speier's catalyst, the hydrosilylation addition patte…
A large variety of composites for electrical applications are developed worldwide on a daily basis. Most of these materials are made from carbonaceous fillers dispersed in polymers. The optimization of the formulations is complex and depends on parameters that are difficult to identify ab initio. The results might als…
The metal delivery mechanism of the metalloenzyme transferrin and the antitumor active interaction of the metal ions, generated by the rapid hydrolysis of bent metallocene metals (Cp2MCl2; M = Ti, V, Nb, Mo), with the transferrin enzyme have been investigated. The initial and rate determining steps of the metal delive…
Three fluorescent molecules with different substituent modification on 5-position showing different extents of fluorescent response to Zn2+ and distinct discriminating effect of RZn/RCd have been readily synthesized. The addition of a dithiol group induces the discriminating effect of RZn/RCd to be obviously improved…
Extension-induced crystallization in a heterogeneous polyethylene oxide (PEO) melt is investigated by small angle X-ray scattering (SAXS) and extensional rheology. The crystalline complex of PEO and sodium bromide is the heterogeneous component, which simulates the roles of crystal or strongly interacted additives dur…
By means of nonadiabatic quantum molecular dynamics it is shown that the amount of energy deposited into ${\mathrm{C}}_{60}$ by a short laser field strongly depends on the molecular orientation with respect to the laser polarization direction. In consequence, subsequent electron-vibration coupling leads to different n…
A composite containing diamond in silicon carbide substrate was studied for revealing wear mechanisms. Due to the low production cost, this material is being evaluated as an alternative economical solution in industry. Tribochemical examination was conducted using a pin-on-disk configuration in both aqueous and dry en…
Despite several studies dealing with the mechanical and tribological properties of skin, the majority of these investigations have been performed at macroscopic levels. However, because of the multilayer structure of skin, it is necessary to perform studies at microscopic scales to reveal the effect of individual laye…
In the past years, the most promising technology of producing ceramic coatings is a method of microarc oxidation. This method is characterized by universal properties of surface layer, which combines high-wear resistance, corrosion resistance, heat, and erosion resistance. The aim of the present work is to improve the…
In-chain multi-functionalized polybutadiene possessing definite geminal dimethylamino groups along polymer backbone, poly(butadiene-co-1,1-bis(4-dimethylaminophenyl)ethylene), has been designed and synthesized via anionic copolymerization of butadiene with 1,1-bis(4-dimethylanimophenyl)ethylene using sec-butyllithium…
Single crystalline LiNb3O8 nanoflakes with high specific surface area were successfully synthesized by using a facile thermal annealing process. The as-prepared nanoflakes exhibited great chemical stability, efficient charge separation properties, and unprecedented photocatalytic activities for the decomposition of to…
A new member to the family of alkaline earth diazenides, calcium diazenide (CaN 2 ), was recently synthesized by a controlled decomposition of calcium azide at high-pressure/high-temperature conditions (Schneider et al. Inorg. Chem. 2012, 51, 2366–2373). Isotypic to tetragonal calcium carbide, the synthesized CaN 2 ph…