Materials Literature
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Membranes made of composite polymer material are widely employed to separate gas mixtures in industrial processes. These membranes have better performance than membranes consisting of polymer alone. To understand the mechanism and therefore aid membrane design it is essential to explore the penetrant transport in the…
High temperature deformation and dynamic recrystallization behavior of Cu-Cr-Zr-Ce alloy at 0.01-5 s-1 and 600-800 ℃ were performed on Gleeble-1500 D simulating machine .The results show that the flow stress increases with the increase of strain rate and decreases with the increase of deforming temperature .Considerin…
Effect of sputtering pressure and partial pressure on structural properties of TiO2 films prepared using DC-sputtering to glass substrate was investigated. sputtering pressures are changed (1.8,2.8,3.8,4.3 pa) at constant O2 /Ar Ratio(5%). Measurements reveal that the TiO2 films at the sputtering pressure 1.8 pa is am…
The photo‐irradiation of chalconoid‐like compounds; (2E,4E)‐1‐(2‐hydroxyaryl)‐4‐methyl‐5‐phenylpenta‐2,4‐dien‐1‐ones to 4‐flavanoids in solution phase has been described. The molecular scaffold of the probed substrates is responsive to intramolecular cyclization as well as cis‐trans isomerizations and photoproducts co…
provision of an adequate quantity of cells with proper function and purity is one of the main challenges of tissue engineering studies. Stem cells, with their self-renewal and differentiation capacity, are considered one of the main cell sources in the field of tissue engineering. Previously, the use of chemical facto…
ABSTRACT Cell navigation is directed by inhomogeneous distributions of extracellular cues. It is well known that noise plays a key role in biology and is present in naturally occurring gradients at the micro- and nanoscale, yet it has not been studied with gradients in vitro . Here, we introduce novel algorithms to pr…
The HIE-ISOLDE project aims at expanding the physics programme of the ISOLDE facility at CERN. In particular, the addition of a superconducting linac will allow the post-acceleration of radioactive ion beams up to 10 MeV/u. However, because of field emission in the superconducting cavities and the possibility of neutr…
We report a new strategy to remove the reflections resulted from the finite embedded transformation-optical design by proposing an impedance-tunable coordinate transformation, on which the functions of impedance coefficients can be derived in the original space without changing the refractive index. Based on the new a…
The cover picture shows an artistic representation of silver nanoparticles assembled on the surface of a hexaniobate crystal, as described by M. B. Cardoso, I. O. Mazali et al. on p. 4075 ff. The silver/hexaniobate crystals are prepared by an eco-friendly method which allows to control the size of the silver nanoparti…
The dioxime of 1,2-dibenzoylpentamethylruthenocene is synthesized from its parent diketone and hydroxylamine under standard basic conditions. The slightly air-sensitive product is crystallized in the form of its monohydrochloride. The solid-state structure is the first example of a dioxime monohydrochloride showing a…
본 연구에서는 자원 재활용-에너지에 바탕을 둔 돈분, 계분, 혼합물의 연소특성에 대하여 고찰하였다. 시험편은 건조 오븐을 이용하여 항량까지 건조시킨 후에, 콘칼로리미터(ISO 5660-1)를 이용하여 연소성질을 시험하였다. 그 결과 돈분의 최대유효연소열(78.72 MJ/kg)은 계분(69.41 MJ/kg)과 비교하여 탄화수소의 많은 양 때문에 비교적 증가했다. 또한 돈분의 $CO_2$ 발생속도(0.1959 g/s)와 총연기발생률( $419m^2/m^2$ )도 각각에 대하여 계분보다 증가하였다. 반면에 계분의 CO 발생량(0.0996 kg/kg)과 CO 발생속도(0.…
Bahan makanan pada umumnya mudah mengalami penurunan kualitas karena \nfaktor lingkungan, kimia, biokimia, dan mikrobiologi. Penurunan kualitas tersebut \ndapat dipercepat dengan adanya oksigen, air, cahaya, dan panas. Salah satu cara \nuntuk mencegah atau memperlambat penurunan kualitas tersebut dengan cara \npelapis…
Abstract : Free-standing carbon nanotube (CNT) electrodes were developed as suitable light-weight current collectors to effectively incorporate novel cathode nanoparticles towards high energy lithium ion batteries. The use of CNT additives with commercial high capacity lithium rich cathodes was shown to increase areal…
Le silicium se présente comme un bon candidat d’électrode négative pour améliorer la densité d’énergie des accumulateurs Li-ion ou rendre les microaccumulateurs compatibles avec le procédé de brasure à refusion qui nécessite un recuit à 260 °C. En effet, il présente une forte capacité spécifique (3759 mAh.g-1) et sa t…
In this work Spark Plasma Sintering of thermal plasma synthesized nanosized powders were studied without removing the free carbon impurities. Instead, SiC was mixed with silicon powder to react with the free carbon during sintering as well as with boron that acted as sintering aids. Density of the resulted specimens i…
Understanding of metal insulator transitions in strongly correlated systems is a long standing problem in condensed matter physics. Two mechanisms are usually distinguished: disorder driven Anderson localization and correlation driven Mott localization. Here we show that metal insulator transitions can be induced in a…
In this work the intersubband electronic properties of two laterally coupled dome-shaped InAs/GaAs quantum dots were investigated. The envelope functions and eigenenergies were calculated as function of distance between the dots. The coupling between the dots was studied using transition lifetime between the dots. The…
Surface chemical modifications are presented for supporting primary neurons in culture. The initial substrates for culture were glass and gold. The surface modifications were based on self assembled monolayer (SAM) approaches. Glass surfaces were initially modified by silanisation with either 3-aminopropyltrimethoxysi…
Lichtmikroskopie wird durch die Beugung von Licht auf eine Auflösung von etwa der halben Wellenlänge des Lichtes begrenzt. Neuere Methoden der Fluoreszenzmikroskopie umgehen diese Beugungsgrenze, indem die Position einzelner fluoreszierender Moleküle mit einer Genauigkeit bestimmt wird, die weit über der Auflösungsgre…
The comparative study of the influence of stitch length and fabric structure on the pilling, crease recovery and drape properties of 100% cotton, 50/50 and 67/33% polyester/cotton fabrics in interlock and single pique structures were studied. It was found that drape and fabric pilling increased with increase in stitch…