Materials Literature
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BACKGROUND: Recent studies have demonstrated that several mineral products sold for medicinal purposes demonstrate antimicrobial activity, but little is known about the physicochemical properties involved in antibacterial activity. METHODOLOGY/PRINCIPAL FINDINGS: Using in vitro mineral suspension testing, we have iden…
This paper investigates the compression failure of carbon fiber-epoxy laminates when exposed to fire. The investigation gives insights into the softening and failure of carbon-epoxy laminates supporting compression loads in the event of aircraft fire. A thermomechanical model is presented for calculating the compressi…
The transformation of ferrihydrite (5Fe 2 O 3 ·9H 2 O) to hematite (α-Fe 2 O 3 ) under alkaline condition in the presence and absence of lead was for the first time investigated using in situ, time-resolved synchrotron-based energy dispersive X-ray diffraction combined with off-line chemical characterization and imagi…
The rapid growth in aviation activities and more stringent U.S. Environmental Protection Agency regulations have increased concerns regarding aircraft emissions, due to their harmful health and environmental impacts, especially in the vicinity of airports and military bases. In this study, the gaseous and particulate-…
We have investigated the pressure dependence of superconducting transition temperature T c of Bi 2 Te 3 through electrical resistance measurement under high pressure up to 13 GPa. The value of zero-resistance critical-temperature T c zero is 2.7 K at 9.0 GPa. Pressurization up to 11 GPa reduces the T c zero . However…
Copper nanoparticles (NPs) were synthesized by inert-gas condensation of a sputtered metallic vapor using a dedicated commercial reactor. By controlling the time of residence of NPs in the carrier gas phase via the tuning of the collision path length, Cu NPs were produced. They exhibit various and well controlled diam…
The combined mechanical and acoustic properties of auxetic (negative Poisson's ratio) foams are described both from a numerical and experimental point of view. Samples of open cell PU-PE foams with negative Poisson's ratio are produced using a dedicated manufacturing process, and subjected to tensile quasi static and…
The first example of a computationally de novo designed protein that binds an emissive abiological chromophore is presented, in which a sophisticated level of cofactor discrimination is pre-engineered. This heterotetrameric, C(2)-symmetric bundle, A(His):B(Thr), uniquely binds (5,15-di[(4-carboxymethyleneoxy)phenyl]po…
Vibrational circular dichroism (VCD) spectra of small size-selected gold nanoparticles covered by both enantiomers of 1,1′-binaphthyl-2,2′-dithiol (BINAS) were measured. VCD spectra of particles covered by the opposite enantiomers of BINAS show a mirror image relationship. The VCD spectrum of adsorbed BINAS is differe…
Carbon nanotubes (CNTs) are promising candidates to create new thermionic- and photoemission materials. Intercalation of CNTs with alkali metals, such as potassium, greatly reduces their work functions, and the low electron scattering rates of small-diameter CNTs offer the possibility of efficient photoemission. This…
Semiconductor blue-multi-laser-diode annealing (BLDA) for amorphous Si film was performed to obtain a film containing uniform polycrystalline silicon (poly-Si) grains as a low temperature poly-Si (LTPS) process used for thin-film transistor (TFT). By adopting continuous wave (CW) mode at the 445 nm wavelength of the B…
The beamline P01, actually under construction at the PETRA III synchrotron in Hamburg, will be dedicated to nuclear resonant scattering (NRS) and to inelastic x-ray scattering (IXS). It will profit from a 20m long straight section with four 5m long undulator-segments. Due to the resulting outstanding brilliance in com…
A range of prediction methods is presented to assist damage analysis and design of building components against explosion effects. The scaled distance can give a first indication if global structural modes, e.g. bending, or local failure modes such as breaching or shear failure have to be considered. Engineering tools…
We investigate the structural, dynamical, and rheological properties of colloid-polymer mixtures in a volume fraction range of = 0.15-0.35.Our systems are density-matched, residual charges are a͒
In recent years, there has been a growing interest in the self-assembly process for the fabrication of micro- and nano-scale structures for various device applications. The success of these applications requires the development of a versatile assembly process for producing large area ordered arrays. In this article, w…
Amini, M., Kherad, M., Mehrabani, D., Azarpira, N., Panjehshahin, M.R. and Tanideh, N. 2010. Effect of Plantago major on burn wound healing in rat. J. Appl. Anim. Res., 37: 53–56. To determine the effect of Plantago major on healing of burn wounds, 100 male Sprague-Dawley 180–220 g rats were randomly divided into 4 gr…
Particle size measurements were performed on the exhaust of a car operating on a chassis dynamometer fueled with standard gasoline and gasoline containing low levels of Pb, Fe, and Mn organometallic additives. When additives were present there was a distinct nucleation mode consisting primarily of sub-10 nm nanopartic…
In this paper, the influences of broken bars located at different relative positions in an induction motor are presented. In this investigation, a finite-element model of the squirrel-cage induction motor is developed. Both thermal and electromagnetic analysis of the induction motor operating in conditions of healthy…
For the accurate ab initio treatment of large molecular systems, linear scaling methods (LSMs) have been devised and successfully applied to covalently bonded systems as well as to those involving weak intra/intermolecular bonds. Very few attempts to apply LSM to highly conjugated molecules, especially to two-dimensio…
A bulk heterojunction system consisting of a soluble poly( p -phenylenevinylene) donor and a small molecular electron acceptor based on Vinazene (2-vinyl-4,5-dicyanoimidazole) has been investigated with respect to the correlation between field-induced emission quenching and free charge carrier formation. Transient and…