Materials Literature
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Our study is focused on the preparation of electrospun nanofibrous support based on poly(2,6-dimethyl-1,4-phenylene oxide) (PPO). Electrospun PPO support with the mean fiber diameter 150 nm exhibited high porosity (80%) and suitable transport properties. Platinum and palladium catalysts were supported on electrospun n…
Bu çalışmada, optimum soğuk sarı kaplama koşulları belirlenerek, soğuk sarı kaplamanın zamak-5'in korozyonuna etkisi araştırılmıştır. Soğuk sarı kaplama koşullarının berlirlenmesinde optimum sıcaklık, akım, süre ve banyo bileşim parametreleri belirlenmiştir. Zamak-5 üzerindeki zemin kaplama olarak kullanılan soğuk sar…
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Main principles of the lately introduced method of Magnetic Adaptive Testing (MAT) are described. The method is applied to measurement of the fatigue damage level and residual lifetime of technical objects manufactured from ferromagnetic construction materials. The up-to-now existing experiments and experience gave sa…
In mice, the inhalation of PbO nanoparticles causes changes to the lung morphology that are typical for inflammation, and the strength of which is influenced by the nanoparticle concentration.
Radyasyon dozimetrisi, radyasyon zırhlama ve radyasyon soğurma gibi gamma ışınlarının madde ile etkileşmelerinin ele alındığı alanlarda, gammaların gerçekleştirdiği çoklu saçılmalar, üzerinde durulması gereken önemli bir süreçtir. Bu nedenle, bu çalışmada deneysel veya analitik olarak elde edilmesi mümkün olmayan, 5.0…
Supported Co3O4 catalysts were prepared by heating the cobalt hydroxide synthesized electrochemically on tainless steel sieve and by heating the commercial TiO2 tablets impregnated with cobalt nitrate solution; the catalysts were than modified with potassium promoter.
In order to control the hydrophobic or hydrophilic character, the NCD film surfaces were grafted by hydrogen atoms (H-termination) or by oxygen atoms (O-termination). Human mesenchymal stem cells and primary human osteoblasts were used for biological studies on H- and O-terminated NCD films. We found that cells cultiv…
Mg-Ni system draws attention due to the promising hydrogen storage properties of Mg2Ni. The proposed method involves the use of NiO and MgCl2 in an electrochemical cell to from Mg-Ni intermetallics directly. The electrodeoxidation of NiO was followed by combination of Mg and Ni in molten salt electrolytes. The product…
The sample was delivered as the mortar fraction with grain size less than 0.063 microns. The proportion of mortar is generally regarded as a binder. To determine the quality of the binder thermal analysis and X-ray fluorescence were performed and insoluble residue in HCl. was found.
Numerical simulations based on PIC technique like the SPICE2 model developed at IPP ASCR are often used in tokamak plasma physics to investigate the interaction of edge plasma with plasma-facing components. The SPICE2 model has been parallelised with the exception of the Poisson equation solver which considerably slow…
The aim of this study is to design and prototype a lens that enable a decrease of the light intensity that radiate into forward direction (90°) and at the same time increase the FWHM of the irradiated pattern.
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A rare supergene Cu-Al sulfate, mineral chalcoalumite, has been found for the first time in the Czech Republic from Jáchymov. This supergene mineral was identified in the material originating from the Červená vein, Rovnost mine (Jáchymov) in an association with other supergene minerals, related by their origin to the…
The microstructure of ceramic based on the silicon nitride is usually consisting of mixed uniaxial and elongated beta grains. The numerical modelling of material behaviour (i.e. elastic constant calculation, stress concentration, crack initiation and propagation, damage evolution etc.) on the microstructural (grain) l…
The article deals with carbonaceous material called black carbon and summarize information about its origin, occurrence, properties and determination.
The occurrence of the green alga Cladophora and other macrophytes in the Brno reservoir was confirmed. The distribution of Cladophora stands was assessed as not dramatic, despite of the temporary occurrence of a mass of surface-floating filaments. This increase in buoyancy of the Cladophora colonies was caused by exce…
Objective of this work was to optimize the SFE from eucalyptus (Eucalyptus grandis L.) leaves, which find application both in medicine and as botanical insecticide. In particular, terpenes and terpenoids belong to active components of eucalyptus essential oil.
Gasification of municipal solid waste was performed in the reactor equipped with a DC plasma torch (set up to 400 A and 290 V). The plasma torch involves the combination of a gas stabilized cathode part and a water stabilized arc part. Argon plasma is formed in the cathode part and then enters the part, where the arc…
The main aim of this paper is an investigation of the crack behavior in the ceramics laminates. Especially, the problem of the estimation of the stress singularity exponent in such a material using different approaches is closely described. Since analytical approach is a suitable tool for two dimensional problems, int…