Materials Literature
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Well-aligned zinc oxide (ZnO) nanowire arrays were successfully synthesized on a glass substrate using the rapid microwave heating process. The ZnO seed layers were produced by spinning the precursor solutions onto the substrate. Among coatings, the ZnO seed layers were annealed at 100 ° C for 5 minutes to ensure part…
We report a type of hybrid nanostructures composed of ZnO nanoparticles, CdSe/ZnS core/shell quantum dots (QDs), and Ag nanoprisms. With ultraviolet light illumination, the energy absorbed by ZnO nanoparticles was transferred to the CdSe/ZnS core/shell QDs inducing a photoluminescence (PL) emission. To enhance the PL…
Here we report fabrication of hierarchically honeycomb-patterned polystyrene (PS) films with polyvinylpyrrolidone (PVP) protruded in the poresvia the combined approach of breath figure and phase separation. The simple post treatment with water washing, heating, or hot embossing is further performed to tune the microst…
For the application of moth-eye patterns to practical optical devices, a novel nano-patterning technique, which can fabricate transparent and robust material based nano patterns through a simple process, needs to be developed, because the moth-eye structures are usually exposed to the outer environment. In this study,…
This work describes the use of nanoporous gold as an electrode material for biosensing applications. Nanoporous gold electrodes are fabricated, and their electrochemical performance is compared to plain gold electrodes of similar dimensions. For the detection of potassium ferricyanide, the nanoporous gold electrodes s…
The present communication describes a new method for the creation of a superhydrophobic thin film, in which polyethylene is synthesized on self-assembled colloidal silica nanoparticles incorporating single-site Cr-oxide catalysts. The obtained thin film shows a static water contact angle of 162° due to the combined ef…
Two cobalt porphyrins, (OEP) Co II and (TPP) Co II , where OEP and TPP are the dianions of octaethylporphyrin and tetraphenylporphyrin, respectively, were examined as electrocatalysts for the reductive dechlorination of DDT (1,1-bis(4-chlorophenyl)-2,2,2-trichloroethane) in N,N′-dimethylformamide (DMF) containing 0.1…
Ethanolic extract of the leaf of Calotropis procera was investigated for its anti-inflammatory and analgesic activities. The extract was evaluated using formalin-induced paw lick, carragenaan-induced paw oedema in Wistar rats, acetic acid-induced writhing and tail flick tests in mice. Each experiment consisted of thir…
東日本大震災で発生した大津波は，福島第一原子力発電所を襲い，原子力発電の安全神話を覆すレベル 7 の原子力事故を引き起こした。国内最悪の事故はいまだ収束に至らず，発電所周辺住民は，震災と原子力事故という二重の苦しみの生活を強いられている。事故対策を進める上で，各タービン建屋地下の溜まり水など放射性物質を多く含んだ 20 万トン規模の高レベル汚染水が大きな障害となっている。海水が混入した高汚染水の浄化，特に Cs の選択的分離・除去に対しては，高選択性を有する無機イオン交換体の使用が効果的である。一方，発電所より大気中へ放出された Cs や I は福島県を中心に広範囲に拡散し，汚染された雨水の処理や土壌の除染が緊急の課題となっている…
The helium behavior in tungsten matrix is investigated by means of molecular dynamics. Firstly, the He-W potential is created by combining the ZBL potential with the data from an ab intio method. The formation energy calculations predict that the most stable configuration for helium in interstitial position is the tet…
The fully epitaxial Fe3O4/ZnO heterostructures were fabricated by reactive dc sputtering (Fe3O4) and rf sputtering (ZnO) on c-Al2O3 substrates. The epitaxial relationship is verified to be Fe3O4(111)⟨11¯0⟩∥ZnO(0002)⟨112¯0⟩ by φ scans. The nonlinear and rectifying properties of I-V curves were observed in the heterostr…
Investigations presented in the present work are concerning the other member of the Aurivillius family, the BaBi2Nb2O9 (BBN). This compound, which seems to be very interesting from the potential applications point of view. The dielectric characterization of this materials and influence of sintering condition on grain…
Transformer noise has been drawing more and more attentions recently. One of the main causes of transformer noise is magnetostriction of grain oriented electrical steel sheets. Magnetostrictions perpendicular to the rolling direction should also be focused in addition to those to the rolling direction, because magneti…
Directionally solidified eutectic (DSE) ceramics add new potentialities to the advantages of sintered ceramics: a higher strength, almost constant, up to temperatures close to the melting point and a better creep resistance. The microstructure of melt-growth composites (MGC) of ceramic oxides consists in three-dimensi…
Integrated gasification combined cycles (IGCCs) are considered the reference technology for high efficiency and low emission power generation from coal. In recent years, several theoretical and experimental studies in this field have been oriented towards capturing CO2 from IGCCs through the integration of Solid Oxide…
Skripta sadrži autorizirana predavanja iz podrucja korozije(teorijske osnove) te metode zastite.
Thermo gravimetric analysis (TGA) is a technique widely used because of its simplicity and the information afforded from a simple thermogram. The accurate determination of kinetic parameters from thermo gravimetric data for polyurethane material would be useful in designing the environmental history of polymer devices…
Zn, Al and Zn/15Al coatings can be produced in optimum conditions by the twin wire arc (TWEA) spraying technique. The \ncoatings are used for corrosion protection in a variety of industrial applications. In this study, the accelerated corrosion behavior \nof Zn, Al and Zn/15Al coatings on a steel surface durin…
Agouti signaling protein (Asip) and melanocortin 1 receptor (MC1R) represent key players in coat color determination in mammals. To investigate the role of those genes in coat color variation in alpaca, mRNA purified from skin biopsies of different colored animals were reverse-transcribed into single-stranded cDNAs an…
This research aims at developing the heat engine system using Shape Memory Alloy (SMA) wires, which work by alternating supply of hot/cold water through the newly developed automatic valves. The SMA wire is connected to the chain and sprocket system having the ratchet type bearing and the spindle with the flywheel. Th…