Materials Literature
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The algal flora of the BoreÄ Hill ventaroles was examined and compared with the flora of their close surroundings. In comparison to unaffected sites, the ventaroles differ in seasonal temperature fluctuation as well as in soil pH. Winter exhalations caused by continual air circulation in the cranny system of rock mas…
Dielectric properties of multiferroic BiMn2O5 ceramics were evaluated over broad temperature and frequency ranges. Two Debye-type dielectric relaxations were observed at low temperatures (130–250 K) and high temperatures (200–450 K), respectively. The low temperature relaxation with an activation energy of 0.18 eV was…
The size effects of Au and ZrO 2 particles on the structural property and the catalytic performance of Au/ZrO 2 catalysts for the water gas shift reaction were extensively investigated. It was found that the Au-ZrO 2 contact boundaries played essential roles in determining the catalytic reactivity. By keeping the size…
Carbon nanotubes (CNTs) exhibit excellent cell proliferation properties, which can serve as a scaffold for cell culturing. However, there are only a few reports on adhesion of osteoblast-like cells to a CNT sheet. In this study, we investigated adhesion of osteoblast-like cells to single-walled carbon nanotube (SWNT)…
Resistance to atmospheric stress corrosion cracking (SCC) and crevice corrosion was examined for various candidate canister materials in the spent fuel dry storage condition using concrete casks. A constant load SCC test was conducted on the candidate materials in air after deposition of simulated sea salt particles o…
The dynamics of infiltration of a nanoporous body with a nonwetting liquid under rapid compression is studied experimentally and theoretically. Experiments are carried out on systems formed by a hydrophobic nanoporous body Libersorb 23, water, and an aqueous solution of CaCl2 at a compression rate of $$ \dot p $$ ≥ 10…
Abstract The Taşoluk kaolinite deposits of Afyonkarahisar (western Anatolia) are hosted by both pre-Early Cambrian sericitic mica-chlorite schists and Neogene volcanites, the latter comprising tuffs and agglomerates. These units have been affected by hydrothermal alteration controlled by faults resulting in complex, i…
Mechanical tests have been carried out on Fe–15%Cr ferritic stainless steel with various microstructures. Ultrafine-grained microstructures with grain sizes of 0.2–0.3 µm were developed by large-strain cold-working and light annealing. The effects of severe deformation on the mechanical behaviour of as-processed and r…
Silicic‐acid uptake kinetics for a field population of benthic diatoms were examined using a radioisotope tracer over a concentration range of 0‐300 µmol L ‐1 . The microphytobenthos half saturation constant (54 µmol L ‐1 ) and specific uptake rates (0.096 h ‐1 ) for silicic acid were well above those usually found in…
In order to have optoelectronic function integrated in a single chip, it is very important to obtain a silicon compatible material with an optimal Photoluminescence (PL) response. The Silicon Rich Oxide (SRO) has shown intense PL and is also compatible with silicon technology. In this work, the composition and optical…
We derive an approximate but rigorous two dimensional electromagnetic cloaking shell in which no parameters are singular. The simplicity of the material parameters makes it potentially easier to realize in practice than other cloaking solutions. The analytical formulation of this shell also provides a simple and expli…
Scanning capacitance microscopy (SCM) is used to probe on nanoscale the capacitive behavior of graphene deposited on a SiO2∕Si n+ substrate (with SiO2 thickness of 300 or 100nm). The SCM tip provides the contact on graphene, while the Si n+ substrate acts as the backgate contact in the graphene/SiO2∕Si capacitor. The…
An abundant trait of biological protein materials are hierarchical nanostructures, ranging through atomistic, molecular to macroscopic scales. By utilizing the recently developed Hierarchical Bell Model, here we show that the use of hierarchical structures leads to an extended physical dimension in the material design…
The electrochemical response of Bromothymol blue at carbon paste electrode in presence of 0.1M KCl was investigated by the cyclic voltammetric technique. It showed a well-defined oxidation peak at 0.73V and a sensitive reduction peaks at 0.34 V. The effect of concentration and scan rate of Bromothymol blue was studied…
INTRODUCTION: Current prosthetic alternatives to autologous vascular grafts remain poor in terms of patency. Growing biologic blood vessels has been proposed as an alternative. In this work, the authors demonstrate a method for producing a tissue-engineered vascular graft (TEVG) with self-derived endothelial cells, sm…
A novel liposomal formulation of docetaxel targeting the folate receptor (FR) was synthesized and characterized. Liposomal formulations are less toxic and can provide longer systemic circulation time than the Tween 80 and ethanol based clinical formulation of docetaxel. Folate receptor-alpha (FR) is frequently over-ex…
The crystalline structure and dielectric properties of Sm1.5Sr0.5NiO4 ceramics are presented. The present ceramics is refined as orthorhombic Bmab phase and the orthorhombic strain may change the statue of charge ordering. The temperature-stable giant dielectric constant (∼100 000) with low dielectric loss of ∼0.1 is…
Cyclic arginine-glycine-aspartate (RGD) peptides and their derivatives have been intensively studied as tumor targeting probes. One major drawback, however, is their short blood circulation half-lives, which greatly compromises their targeting efficacy. To address this issue, a cyclic peptide, c(RGDyK), and an organic…
The effects of Zr addition on the microstructure of AZ91 alloy were investigated under as-cast and isothermally aged conditions. The microstructures contained a eutectic β-Mg17Al12 phase together with fine Al–Zr intermetallic compounds. These intermetallic compounds inhibited grain growth during the 420 °C isothermal…
The existence of universal scaling in the vicinity of the jamming transition of sheared granular materials is predicted by a phenomenological theory. The critical exponents are explicitly determined and are independent of the spatial dimension. The validity of the theory is verified by a molecular dynamics simulation.