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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text James E. Harvey, Cynthia L. Vernold, Andrey Krywonos, and Patrick L. Thompson, "Diffracted radiance: a fundamental quantity in nonparaxial scalar diffr…
Abstract Silanol groups in protonated magadiite (H-magadiite) were characterized by 1 H and 2 H solid-state nuclear magnetic resonance (NMR). H-magadiite and deuterated (D) magadiite were synthesized by the treatment of Na-rich magadiite with 0.2 N HC1 and 0.2 N DC1, respectively. In the 1 H NMR spectrum measured at r…
During the mixing of ethylenediammonium dichloride and antimony trichloride except of reported earlier [NH3(CH2)2NH3]5(Sb2Cl11)2 · 4 H2O a new salt [NH3(CH2)2NH3](SbCl4)2 was obtained. The crystals are monoclinic at 295 K, space group C2/m, a = 13.829(3), b = 7.408(1), c = 7.588(2) Å; β = 103.18(3)°; V = 756.9(3) Å3;…
Surface modification of the freestanding polyaniline (PANI) base film and coating on low-density polyethylene film was carried out by graft copolymerization with vinyl benzyl chloride (VBzCl) using UV-induced and heat-induced methods. These samples were characterized by X-ray photoelectron spectroscopy, UV−visible abs…
Diversity of phytoplankton from the Southern Coastal Fringe of the Rio de la Plata between 58°32' and 57°41' W, up to 10 km from the coast line was analized. The present study show the results of the sampling carried outside peces between 1993-1997. The species identified were illustrated and a brief ecological and me…
Some soils in arid and semi-arid areas contain palygorskite in their clay fraction. The absence of palygorskite in soils in humid areas is attributed to the acid nature of these soils. Palygorskite is known to be unstable even in very dilute acid (Singer, 1977). As shown recently, decomposition of palygorskite occurs…
CRAMPS NMR of 1 H was used for the structural analysis of some natural silk fibroins such as Tussah Antheraea pernyi and Bombyx mori in the solid state. We were able to resolve all expected 1 H NMR resonances. When tied to the resolution of 13 C NMR via 2D 1 H− 13 C HETCOR experiments, overlapping proton resonance und…
The densification behavior of fine alumina (mean particle size of ∼0.31 μm) and coarse alumina (mean particle size of ∼4.49 μm) during liquid‐phase sintering with additions of talc have been studied, as well as the microstructural evolution. Small amounts (0, 5, and 10 wt%) of talc were added to the fine alumina and c…
Aluminum concentrations in soil solutions are not only controlled by inorganic clay minerals but also by organically bound aluminum. The objective of this study was to determine which pools contribute to Al dissolution. Soil samples were taken at various distances from tree trunks and at various depths at the Rolling…
This study was conducted to determine the concentration of total, free, peptide-bound, protein-bound, soluble and insoluble collagen hydroxyproline (Hyp) in tissues from the Arabian camel (Camelus dromedarius). Results indicated that there were significant differences in the concentration of total, free, peptide-bound…
„Trockene“ Synthesebedingungen werden bei der Herstellung maßgeschneiderter mesostrukturierter Hybridmaterialien, die aus Dendrimeren (siehe Bild) und [Ti16O16(OEt)32]-Clustern bestehen, benötigt. Sie verhindern die Bildung einer kontinuierlichen anorganischen Phase. Die Form der organischen Einheiten erzwingt eine lo…
A new method for the determination of the classical Preisach’s model distribution function is developed. The proposed method determines numerically the distribution function from classical experimental measurements and does not make any assumption concerning the material type. The Preisach’s triangle is discretised in…
The surface tension of non doped, gallium-doped and boron-doped silicon melts has been measured as a function of temperature in purified argon atmosphere (oxygen partial pressure was less than 10 -8 MPa) using the ring tensiometry technique. In all cases, the surface tension decreases linearly with increasing temperat…
An exact scheme is presented to determine the effective viscosity tensor for periodic arrays of hard spherical particles suspended in a Newtonian fluid. In the highly symmetric case of cubic lattices this tensor is characterized by only two parameters. These parameters are calculated numerically for the three cubic la…
The heterotetrameric recombinant holoenzyme of human protein kinase CK2 was purified to homogeneity. It degraded spontaneously to a stable and fully active state in which the catalytic subunit was about 5 kDa smaller than the wild type. The degraded enzyme was crystallized using polyethylene glycol 3350 as precipitant…
We study a Stefan problem for coarsening of many small particles of solid phase in undercooled liquid phase which includes surface tension and kinetic undercooling effects. A mean-field model is derived by homogenization of the free boundary problem. It extends the classical theory of Lifshitz et al. by taking into ac…
[structure:see text] Anionic facial amphiphiles have been prepared from cholic acid. These compounds offer antipodes of recently reported cationic amphiphiles derived from cholic acid. The synthesis of the anionic amphiphiles was accomplished in few steps from a common intermediate. In contrast to many other anionic f…
The Monte Carlo simulation of probability of radiation damage from incorporated Auger emitters to DNA and the mechanism of possible damage formation (single strand breaks (ssb) and double strand breaks (dsb) of DNA) in relation to track structures of the Auger electrons is reported. Three different models were used of…
Electrochemical investigations on Fe-Si alloys with different Si content (1.9 at% to 50.0 at%) were carried out in nitrogen-purged acidic (pH = 5.0) and weakly alkaline (pH = 8.4) solutions. The passivation behavior of these alloys is dependent on the Si content, which leads to three different phases of the bulk metal…
Abstract Homoionic Ca-saturated clay pastes were prepared and drying curves were obtained by applying suction pressures from 1 kPa to 100 MPa, A transmission device was used to study particle orientation by placing the clay in a cell specially designed to obtain diagrams corresponding to different sample orientations.…