Materials Literature
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In this study new compositions of polyphosphate coacervates were obtained with the ions Ni (2+) and Co (2+). Samples of the glassy systems were prepared with proportions P/M (+2) varying between 0.5 and 10. The qualitative and quantitative description of the first coordination shells of the transition metal were obtai…
Abstract The purpose of this study is to correlate the nano‐organization in water of coil‐rod‐coil amphiphilic block copolymers constituted of a conjugated segment to their optoelectronic properties. The ABA block copolymer structures, easily achieved via coupling reactions, are based on conjugated rod of dihexylfluor…
The temporal evolution of photoluminescence in individual single-walled carbon nanotubes (SWNT) under strong laser irradiation is studied and pronounced blinking and bleaching is observed, caused by photoinduced oxidation that subsequently quenches mobile excitons. The nanotubes are isolated with sodium cholate and sp…
Mutations at the flügellos (fl) locus in Bombyx mori produce wingless pupae and moths because of the repressed response of wing discs to ecdysteroid. Four recessive fl alleles occurred spontaneously and were mapped at 13.0 of the silkworm genetic linkage group 10. By positional cloning, we confirmed that the gene resp…
The kinetic model of the self-condensing vinyl polymerization (SCVP) with nonequal molar concentrations of stimulus and monomer was developed in this work. The molecular size distribution function and other molecular parameters of the resulting hyperbranched polymers were derived. The feed ratio of stimulus to monomer…
The phase stability, chemical bonding, and electronic structure of MgH(2) nanowires and possible low energy surfaces of α-MgH(2) thin films have been investigated using the ab initio projected augmented plane-wave method. Structural optimizations based on total energy calculations predicted that, for the α-MgH(2) phas…
Morphology of a novel semiorganic nonlinear optical crystal, l -arginine trifluoroacetate ( + (NH 2 CNH(CH 2 ) 3 CH(NH 3 + )COO − ·CF 3 COO − ) has been indexed. The crystal has nine developed facets with major ones (1̅ 01) (1̅ 00) and (001). The dielectric constant and dielectric loss were recorded both as function o…
Ion irradiation of ${\text{Fe}}_{60}{\text{Al}}_{40}$ alloys results in the phase transformation from the paramagnetic, chemically ordered B2 phase to the ferromagnetic, chemically disordered A2 phase. The magnetic phase transformation is related to the number of displacements per atom (dpa) during the irradiation. Fo…
Abstract Diethylenetriaminepentatakis(methylene phosphonic acid) (DTPMP) is commonly used in oilfield for scale inhibition. In this study, Ca-DTPMP submicron-sized particles were prepared directly by chemical precipitation with the assistance of phosphino-polycarboxylic acid (PPCA). The influences of adsorbed PPCA, KC…
A copper-rich cereal: Superhydrophobic copper particles show a very large Cheerios effect and rapidly self-assemble into robust sheets on the surface of water. These sheets can support objects (including water drops, see photo) placed on them, even though the irregular geometry of the particles means that they contain…
The development of a tool called the Service Load Factor (SLF) for railway tapered roller bearings using residual stress and retained austenite data is presented. Case-carburized tapered roller bearings used in the railroad industry are manufactured with a dual-phase microstructure that consists primarily of tempered…
A novel modified nano-calcium carbonate (R-CCR) was prepared by coating a layer of organic compound with three functional groups (–OH, –COOH and C=C) on the surface of CCR (a commercial nano-CaCO3 modified with stearic acid) powders in solid state. Fourier transform infrared spectrometer (FTIR) indicated that the modi…
Abstract Injection of inhibitors for gas hydrate formation during transportation of wet gas/condensate in pipelines strongly affects the tolerance for produced formation water. The use of monoethylene glycol (MEG) as hydrate inhibitor can be combined with pH increase (pH stabilisation) as corrosion control for carbon…
A multicomponent and multiphase model with fluid motion is developed. The model is used to study reactive wetting in the case where concentration change of the spreading liquid and the substrate occurs. With the introduction of a Gibbs energy functional, the governing equations are derived, consisting of convective co…
Mesoporous silica nanospheres (MPNSs) were synthesized by the sol-gel method and were investigated by X-ray diffraction, nitrogen sorption, and transmission electron microscopy. The analyses showed that the MPNSs were highly dispersed, with a diameter range of 50-250 nm. Further, the polycation poly(allylamine hydroch…
Structural changes during tensile stretching deformation for pure polypropylene (PP) specimen and PP/ZnO specimens with different content of ZnO nanoparticles have been investigated by small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) techniques. For pure PP specimen, there is a large amount o…
A model based upon excluded volume considerations is presented for the connectedness percolation thresholds in polydisperse systems of cylindrical rod-like nanoparticles. The dependence of the percolation threshold upon polydispersity index and number-averaged aspect ratio is examined for two different distribution fu…
The electronic and magnetic properties of oxidized zigzag and armchair graphene nanoribbons, with hydrogen passivated edges, have been investigated from ab initio pseudopotential calculations within the density functional scheme. The oxygen molecule in its triplet state is adsorbed most stably at the edge of a zigzag…
We report the results of charge transport studies on single CdTe nanocrystals contacted via evaporated Pd electrodes. Device charging energy, E c, monitored as a function of electrode separation drops suddenly at separations below approximately 55 nm. This drop can be explained by chemical changes induced by the metal…
Schutzüberzug: Glycodendrimere können als homogene bioaktive Beschichtungen genutzt werden, um die Zytotoxizität von einwandigen Kohlenstoffnanoröhren (SWNTs) abzuschwächen. Die bifunktionellen Glycodendrimere (siehe Bild) weisen periphere Kohlenhydrateinheiten und eine Pyren-Endgruppe auf, die über π-π-Wechselwirkung…