Materials Literature
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Pseudomonas aeruginosa were used for extracellular biosynthesis of gold nanoparticles (Au NPs). Consequently, Au NPs were formed due to reduction of gold ion by bacterial cell supernatant of P. aeruginos ATCC 90271, P. aeruginos (2) and P. aeruginos (1). The UV‐Vis. and fluorescence spectra of the bacterial as well as…
Nanosized layered double hydroxides (LDH) were synthesized inside the mesooporous carbon (CMK-1) known as CMK-LDH nanocomposites by simple impregnation and precipitation techniques. The catalytic activity of these nanocomposites for Claisen–Schmidt condensation reactions showed remarkably high activity and selectivity…
The paper presents results on eroded mass measurements for nanofilled silicone rubber by controlled infrared laser heating, which simulates hot spot heating by dry-band arcing on wet and polluted composite insulators. Improvement in dispersion by surface treatment of the nanofillers with surfactants and by calcination…
15-Crown-5-appended metalloporphyrin causes a K(+)-driven self-organization to bind a bifunctional guest ditopically, thereby allowing the circular dichroism (CD) detection of chirality induced in the ensemble when chiral amines are employed as the guest; the chiroptical properties are discussed.
Fluorescence spectra of Nd:YVO(4) under excitation of a continuous wave (CW) diode laser and a femtosecond laser at 800nm were investigated. It was found that Nd:YVO(4) shows different upconversion and downconversion luminescencent behaviors when excited by the diode laser and the femtosecond laser. The dependence of…
We introduce a set of new interfacial energies for approximating the Euler number of level surfaces in the phase field (diffuse-interface) representation. These new formulae have simpler forms than those studied earlier in [Q. Du, C. Liu and X. Wang, Retrieving topological information for phase field models, SIAM J. A…
The solvent promoted aggregation behaviour of a meso-substituted amphiphilic corrole derivative occurs with the formation of aggregates with regular morphology, different from those obtained in the case of related porphyrin structures, opening interesting perspectives for the application of these derivatives in import…
In summer 2004 and 2006 the TOHYCO-Riderabus with supercapacitors and IPTbwas operated by the IIEECfor public transport services in Lucerne. A second generation version of a supercapacitor storage SAMdwas implemented and tested. A very important step in industrializing hybrid vehicles with SAM became fulfilled. The qu…
The uptake of aqueous Ba2+ ions by abiogenic calcite and aragonite was studied over a wide range of concentration; 1.0 × 101, 5.0 × 101, 1.0 × 102, 5.0 × 102, 1.0 × 103, 5.0 × 103, and 1.0 × 104 mg/L. The uptake process was characterized using ICP-AES, XRPD, SEM/EDS, and FTIR techniques. Up to the initial concentratio…
Currently, there is much public discussion about the realization of a hydrogen economy as a viable alternative for future large-scale energy sources. Hydrogen as an energy source has several compelling features. For example, its gravimetric energy density is three times that of oil, its combustion and fuel cell produc…
The “nominal grain size” (average grain size) is generally applied to Hall-Petch relationship to evaluate grain refinement strengthening in polycrystalline materials. However, the steels with wide grain size distribution (duplex-grained structure) may not deform uniformly but yield preferentially from larger grains to…
Several N-alkyl and N-phenyl derivatives of 6-amino- () and 6,6'-diamino-2,2':6',2''-terpyridine () were synthesized, and their fluorescence properties were studied. A successive red-shift was observed as the number of the N-substituted groups increased. It was also shown that the susceptivity of the fluorophores to a…
Chloride-induced stress corrosion crack growth rates were measured for candidate canister materials in a simulated marine atmospheric environment. Half-inch compact tension specimens were used to obtain stress corrosion crack growth rates by applying a direct-current potential-drop method to measure crack lengths. The…
Reactive diffusion between solid Fe and liquid Zn was experimentally examined using Fe/Zn diffusion couples prepared by an immersion technique. Using this technique, a pure iron sheet was immersed in a molten pure Zn bath with a constant temperature of T=723 K (450°C) for various times up to t=7.2×103 s (2 h). The mic…
Article Indirect polyelectrolyte titration of cellulosic fibers – Surface and bulk charges of cellulosic fibers was published on January 1, 2007 in the journal Nordic Pulp & Paper Research Journal (volume 22, issue 1).
A water insoluble porphyrin 5,10,15,20-tetrakis[3,4-bis(2-ethylhexyloxy)phenyl]-21H,23H-porphine (EHO) that is highly sensitive to low concentrations of NO2 in nitrogen has been organized at the air–water interface using a host calix[8]arene (C8A) matrix. Different composition ratios of C8A have been studied at the ai…
A modular and simple approach to the graft functionalization and cross-linking of ketone-containing poly(ε-caprolactone)s has been investigated for the preparation of novel gel and nanoparticulate materials. Poly(ε-caprolactone--2-oxepane-1,5-dione) (P(CL--OPD)), was grafted by reaction with 1-aminooxydodecane and cro…
The vibrational contribution to DeltaS of the low-spin ((3)T(1)) to high-spin ((5)E) spin transition in two 3d(4) octahedral systems [Mn(III)(pyrol)(3)tren] and [Cr(depe)(2)I(2)] have been estimated by means of DFT calculations (B3LYP/CEP-31G) of the vibrational normal-modes frequencies. The obtained value at the tran…
Chromium transport from stainless steel current collectors to the cathode can be a route for rapid performance degradation in solid oxide fuel cells. Typical volatile chromium species, such as , are manageable; however, volatile species with higher vapor pressures may play a significant role in chromium transport and…
Homogeneous AgI nanoplates in diameter and in thickness can be prepared by a solution-based route using poly(diallyldimethylammonium chloride) as capping agent. The formation of unusual 7H/9R polytype modifications is the origin of the huge room temperature superionic conductivity and the large hysteresis in the phase…