Materials Literature
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In this article, a series of new silica/polyimide (SiO 2 /PI) nanocomposite films with high dielectric constant (>4.0), low dielectric loss (<0.0325), high breakdown strength (288.8 kV mm −1 ), and high volume resistivity (2.498 × 10 14 Ω m) were prepared by the hydrolysis of tetraethyl orthosilicate in water‐so…
The damage evolution in a single domain aluminium/alumina freeze-cast composite has been examined using 3D X-ray computed tomography (CT). A single domain was extracted and loaded incrementally at an orientation of 45° to the lamellae, with the damage being assessed after each of eight compressive loading steps. Prior…
Three novel fluorinated bis(biphenyl)diacetylene (1,4-bis(biphenyl-4-yl)buta-1,3-diyne) derivatives, with alkoxy tails at the terminal positions, were prepared for use as high-birefringent nematic materials. To lower the thermal transition temperatures and determine the origin of the nematic phase of these compounds,…
Abstract Two‐dimensional (2D) (hydro)oxide materials, that is, nanosheets, enable the preparation of advanced 2D materials and devices. The general synthesis route of nanosheets involves exfoliating layered metal (hydro)oxide crystals. This exfoliation process is considered to be time‐consuming, hindering their indust…
Malate dehydrogenase (MDH) ubiquitously exists in living organisms and has many isoforms in a single species. MDHs from some classes have been characterized for their catalytic properties, which show significant variations despite that they share high sequence identity for the active sites. One class MDH, the plastid-…
BACKGROUND AND AIMS: Meloxicam, a widely recommended AINS, presents poor water solubility, which limits its bioavailability and effect onset. The objective of this study is the investigation of the most important factors that influence the efficiency of sonication in the preparation of meloxicam nanocrystals. METHODS:…
The suitability for fuel cells to run on synthesis gas coming from the gasification of waste is determined by the sensitivity of the fuel cell to run on contaminated fuel. Out of the available fuel cell technologies solid oxide fuel cells (SOFCs), because of their ceramic construction and high operating temperatures,…
This review is a summary of applications of photoluminescence and galvanoluminescence techniques used to determine important characteristics of the porous anodic aluminum oxide films. Both photoluminescence and galvanoluminescence of porous anodic oxide films formed on highly reflective aluminum surfaces in either org…
The syntheses of silicas with highly ordered cubic Ia3d structure templated by Pluronic P123 (EO20PO70EO20) block copolymer surfactant and sodium dodecyl sulfate (SDS) additive in the presence of swelling agents are demonstrated. It was found that the cubic Ia3d silica forms at 25 °C when a moderate amount of a swelli…
Single-phase polycrystalline SrBi5Ti4CrO18 and SrBi5Ti4Cr0.5Co0.5O18 were synthesized by a modified Pechini method. Both samples have an orthorhombic structure with the space group B2cb. The valence state of Cr is suggested to be +3 and the Co ions exist in the form of Co2+ and Co3+ based on the results of x-ray photo…
Abstract Catalytic activity of iron complex-encapsulated zeolite catalyst ([Fe(bpy)3]2+@Y) for oxidation of benzene increased with increasing the amount of water added to acetonitrile. Maximum value of catalytic activity was obtained when the volume ratio of the solvents was equal (CH3CN:H2O = 1:1). After reaction at…
Hexagonal boron nitride (h-BN) is an important material for the development of new 2D heterostructures. To enable this development, the relationship between crystal growth and the substrate orientation must be explored and understood. In this study, we simultaneously grew h-BN on different orientations of Cu substrate…
Abstract Eine effektive Strategie zur Verbesserung der Lanthanoidenlumineszenz im Nahinfrarot‐Bereich wurde erstmals erfolgreich eingesetzt. Diese involviert die systematische Verkürzung der radiativen Lumineszenzlebensdauer τ rad in molekularen Ytterbium‐Komplexen. Der zweizähnige Chelatligand 2,2′‐Bipyridin‐ N , N ′…
Light stimulation was used to trigger the assembly of nanostructures by directly powering changes at the supramolecular level without incurring net chemical changes at the molecular level. Polyethylene imine, a polybase, was mixed in aqueous solution with sodium 1-naphthol-4-sulfonate, an aromatic alcohol, which, in t…
Magnesium aluminate spinel (MgAl 2 O 4 ) forms an interesting system having tetrahedral and octahedral voids filled with near similar sized divalent Mg 2+ and trivalent Al 3+ cations. Structural disorder (e.g., Mg–Al antisite defects) can be tuned by synthetic conditions. This study reports the evolution of Mg/Al diso…
The effects of the supporting reagents hexamethylenetetramine (HMTA) and potassium chloride (KCl) mixed in zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) on the morphological, structural, and optical properties of the resulting ZnO nanostructures electrodeposited on graphene/glass substrates were investigated. The sup…
Steam explosions by the interaction of molten corium with water have been studied extensively because they may have the potential to impact the integrity of the containment. Since breakup and fragmentation processes during premixing are important mechanisms that influence steam explosion behavior, the particle size di…
Y 2 O 3 :Er 3+ hollow nanofibers were prepared by calcination of the monoaxial electrospinning‐derived PVP /[Y( NO 3 ) 3 +Er( NO 3 ) 3 ] composite nanofibers, and then Y 2 O 2 S:Er 3+ hollow nanofibers were synthesized by sulfurization of the as‐obtained Y 2 O 3 :Er 3+ hollow nanofibers via a double‐crucible method us…
In order to evaluate the safety margin during a postulated severe accident, a module named ASAP-2D (Accident Simulation on Pressure vessel-2 Dimensional), which can be implemented into the severe accident simulation codes (such as ATHLET-CD), is developed in Shanghai Jiao Tong University. Based on two-dimensional sphe…
In this paper, the results of the investigation of cathodic plasma electrolytic oxidation (CPEO) of molybdenum at 160 V in a mixed solution of borax, water, and ethylene glycol are presented. Real-time imaging and optical emission spectroscopy were used for the characterization of the CPEO. During the process, vapor e…