Materials Literature
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The article describes a sociological problem linked to decision-making about the locality in which a deep geological repository of spent nuclear fuel and radioactive waste is to be built in the Czech Republic. The introduction explains the social situation of negotiations about the repository and identifies concerned…
Abstract Scanning electron microscopy (SEM) is employed to monitor the surface morphology of polypyrrole films (PPy) grown on different working electrodes (i.e., vitreous carbon and Au (111)) under diverse experimental conditions (i.e., dynamic vs. static potential protocols) and anion dopants (i.e., I-and F-). The mo…
To meet the increasing demands for commercial nanoparticles new eco-friendly "green" methods of synthesis are being discovered. Plant mediated synthesis of nanoparticles offers single step, easy extracellular synthesis of nanoparticles. We report the synthesis of antibacterial silver nanoparticles using leaf broth of…
Helicenes are polycyclic aromatic compounds with nonplanar screw-shaped skeletons formed by ortho-fused benzene or other aromatic rings. Since the first synthesis of helicenes was reported in 1903, helicene chemistry including their synthetic methodologies and applications has been greatly exerted. Especially in recen…
本研究では，工業的な条件で製造されるポリエチレンテレフタラートフィルムの延伸に伴う構造形成を調べるため，延伸ロールを用いて連続的に一軸延伸されたフィルムについて，小角X線散乱と広角X線回折から配向構造を評価した．その結果，90°CではSmectic相，100°Cでは結晶相に対応する回折が観察された．延伸フィルムの小角散乱像には，いずれも延伸方向とその垂直方向に加え，X方向のストリークが観察された．さらに延伸倍率300%以上では，Through像には延伸方向と直交する方向の2点像，Edge像には4点像が現れた．また，Edge像の方が，Through像よりもストリークおよび散乱の強度が強くなった．この差は，延伸倍率200%以上ではフィ…
Se n Bi 2 Te 3-x Se x , , , ( , 201620) : Se Bi 2 Te 3-x Se x (0 x 0.45), , X , Se : Se XRD , , Se , ; Se , Seebeck : , Se
In this paper, a modeling method of knitted loops in a plain stitch fabric, which can simulate its curling and wale skew, is proposed. First, a yarn is modeled as an elastic linear object whose cross-section is circular and does not change during deformation. Then, the shape of the yarn and its potential energy can be…
We study the disordered and ordered phasetransitions modeled by the Landau-Brazovskii (LB) equationusing the dynamic transition theory. It is shown that thelinear instability of the disordered phase always leads tophase transitions to ordered phases, and type of transitionsis dictated by the sign of a nondimensional p…
Amaç: Sunulan araştırma kapsamında; PEG bazlı hidrojellerin sentezi, elde edilen hidrojellerin karakterizasyonu ve bu hidrojellerin kontrollü ilaç salım sistemlerinde kullanımlarının incelenmesi amaçlanmıştır.Metod: Farklı özelliklere sahip PEG bazlı hidrojellerin fotopolimerizasyon yöntemi ile fotobaşlatıcı kullanıla…
Engineering materials, mostly steel and their alloys are heat treated to alter their mechanical and physical properties so as to meet the engineering applications. The objective of the research was to maximize the impact toughness by selecting various combinations of Charpy Impact test parameters, thermal treatments a…
Diethylaminoethyl (DEAE) cellulose adsorbed Pointed Gourd Peroxidase (PGP) was employed in decolorization of synthetic dyes. The expressed activity of immobilized preparation on fifth repeated use was ~50% and decolorization achieved for synthetic dyes DR19 and dye mixture (DR19+DB9) was 64.9% and 61.5% respectively.…
Throughout history, the earths resources have been exploited without considering their eventual limitations. At present, one of the key challenges is to concentrate on saving natural resources for future generations while bringing industrial activities into a more stable long-term balance between environmental preserv…
In this paper we derive, starting from the basic principles of ther-modynamics, an extended version of the nonconserved Penrose-Fife phase tran-sition model, in which dynamic boundary conditions are considered in orderto take into account interactions with walls. Moreover, we study the well-posedness and the asymptoti…
In November 2011, the Project of Basic Research of Forming by Space-Time-Controlled Multi-Stage Pulsed Magnetic Field (Stic-Must-PMF) was supported by the National Basic Research Program of China (973 Project, 2011.11-2016.08). It is aimed at achieving breakthroughs in manufacturing technology to solve current problem…
Structural and optical properties of Cr doped ZnO nanoparticles prepared by the thermal decomposition method are presented. X-ray diffraction studies confirmed the substitution of Cr on Zn sites without changing the wurtzite structure of ZnO. Modified form of W-H equations was used to calculate various physical parame…
Microbial induced corrosion (MIC) of reinforced concrete sewer piping and manholes is a significant issue in Australia and overseas costing water authorities hundreds of millions of dollars annually. It is anticipated that as the country's sewer infrastructure ages the problem will become more severe. Over the last 4…
TiO2 nanoparticles were pretreated with ethelendiamine (EDA) to synthesize aminefunctionalized TiO2. The mixed matrix membranes (MMM) comprised of aminfunctionalized TiO2 inside polysulfone (PSf) matrix were fabricated and characterized for gas separation. The effects of the amin-functionalized TiO2 loading on the gas…
peer reviewed
The application of protective coatings on metal materials is the effective way to improve their durability. Chromium nitride coatings are applied mainly on tools due to good resistivity to oxidation compared to other metal nitride coatings and good wear resistance. Some characteristics of the coatings deposited in fix…
The dielectric properties of electrochemically grown zirconium oxide films by anodisation of zirconium in 1.0 mol dm-3 phosphoric acid solution were investigated in a 3 to 30 V potential range with a view to inducing surface modifications for eventual use in biomedical and electronic applications. The oxide films grow…