Materials Literature
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Antibodies are generally thought to be a class of proteins that function without the use of cofactors. However, it is not widely appreciated that antibodies are believed to be the major carrier protein in human circulation for the important riboflavin cofactor that is involved in a host of biological phenomena. A furt…
The influence of substitutions and vacancies in a unique $4d$ itinerant ferromagnet $\mathrm{Sr}\mathrm{Ru}{\mathrm{O}}_{3}$ are studied by thermoelectric power, resistivity, and magnetic measurements. Despite large changes of the Curie temperature, ordered magnetic moment, and conductivity, the thermoelectric power (…
Eine blumenkohlartige Oberfläche (siehe Bild, Maßstab: 8 μm) und Perfluorkohlenstoffketten am Polymerrückgrat bewirken, dass der Film aus dem gezeigten fluorierten Polythiophen, der elektrochemisch auf einer Indiumzinnoxid-Oberfläche abgeschieden wurde, sowohl superwasser- als auch ölabstoßend ist. Der Einschub ist ei…
A model for the dryout heat flux during penetration of water into solidifying rock is developed by combining steady-state one-dimensional phase change theory with available semiempirical equations for (i) the dryout heat flux in a porous medium and (ii) the permeability of hot rock cooled by water. The model is in goo…
The synthesis of a polyhydroxyalkanoate with medium chain length alkyl substituents by Pseudomonas oleovoranswas investigated using protonated and deuterated forms of octanoic acid in a minimal salts medium. Cultivation with deuterated octanoic acid resulted in a reduced rate of polymer accumulation compared to that w…
Abstract Thermophysical properties of liquid and supercooled tungsten were measured using non‐contact techniques in combination with an electrostatic levitator. Over the 3125–3707 K temperature range, the density measurements can be expressed as ρ ( T ) = 16.7(± 0.33)× 10 3 − 1.08(± 0.08) (kgċ m −3 ) with T m = 3695 K…
The phonon dispersion relations for tetragonal $\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$ have been determined along the [100], [110], and [001] directions at room temperature by inelastic neutron scattering. The zone-boundary TA phonon energies for $\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$ are considerably lower than th…
Electronic structure and optical spectra of GaAs nanocrystals for a wide range of sizes are studied by using both $s{p}^{3}{s}^{*}$ and $s{p}^{3}{s}^{*}{d}^{5}$ nearest-neighbor tight-binding models. Our results show that the inclusion of $d$ orbitals into a minimal basis set is necessary for a proper description of t…
In this work, we present a novel soft chemical synthesis to aluminum nanoparticles based on the hydrogenolysis of the metastable organoaluminum (I) compound (AlCp*) 4 ( 1 ) in mesitylene at 150 °C and 3 bar H 2 . Aiming at the development of a general wet-chemical, nonaqueous route to M/E intermetallic nanophases (E =…
[reaction: see text] A new dissymmetrical tetrathiafulvalene (TTF) derivative 1 was synthesized as a versatile building block to reach TTF-based donor-acceptor assemblies incorporating C(60) in triad C(60)-TTF-C(60) 2 and/or p-benzoquinone (Q) in fused dyad Q-TTF 3 and triad Q-TTF-C(60) 4.
Cobalt-containing mesoporous materials that have been prepared using different procedures have been comparatively characterized by transmission electron microscopy/energy-dispersive X-ray spectroscopy (TEM/EDS), extended X-ray absorption fine structure spectroscopy (EXAFS), X-ray absorption near edge spectroscopy (XAN…
Abstract Simulations have been carried out on metamaterials in the microwave regime. S ‐parameters obtained from waveguide simulations of a unit cell are used to retrieve the effective permittivity and permeability with which we compute the far‐field radiation of a monopole embedded in a metamaterial substrate using a…
Onconase (ONC) from Rana pipiens is the smallest member of the ribonuclease A (RNase A) superfamily. Despite a tertiary structure similar to RNase A, ONC is distinguished by an extremely high thermodynamic stability. In the present paper we have probed the significance of three structural regions, which exhibit struct…
Summary An edible coating was formed by blending turmeric ( Curcuma longa ) and casein in equal proportions at 95 °C for 12 h. Small quantities of polyvinyl alcohol and propylene glycol were added to encourage film formation and plasticizing respectively. The blend was removed from the reaction vessel and homogenized…
Atherosclerosis is a leading cause of death in the U.S. Because there is a potential to prevent coronary and arterial disease through early diagnosis, there is a need for methods to image arteries in the subclinical stage as well as clinical stage using various noninvasive techniques, including magnetic resonance imag…
Dynamics and microstructure of the surfactant layer in organically modified silicates and their composites with polystyrene were studied as a function of surfactant loading and temperature in the range relevant for melt intercalation. Site selectivity was achieved by using specifically headgroup- and tail-labeled surf…
A monodisperse truncation mutant of MxiH, the subunit of the needle from the Shigella flexneri type III secretion system (TTSS), has been overexpressed and purified. Crystals were grown of native and selenomethionine-labelled MxiH(CDelta5) and diffraction data were collected to 1.9 A resolution. The crystals belong to…
The available models of charge transfer processes in electroactive polymer films are considered. Examples of interpretation of the data of electrochemical measurements using model approaches are given. The emphasis is placed on the interpretation of the results on the impedance of modified electrodes. On this basis, c…
We give the spectroscopic evidence of energy transfer to erbium ions provided by ${\mathrm{SnO}}_{2}$ nanocrystals in silica. The spectral and time resolved analysis of the nanocluster luminescence resonant with ${\mathrm{Er}}^{3+}$ transitions demonstrates that erbium ions take part to energy-transfer mechanisms with…
A mechanism of the thermal and photochemical bleaching of merocyanine to spiropyran is proposed on the basis of CASSCF/CASPT2 calculations on the 6-(2-propenyliden)cyclohexadienone model system. Our results suggest that this photochemical transformation takes place in two steps. First, the initially pumped 1(pi-pi) S2…