Materials Literature
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Polycrystalline (CeS) 1.15 (TaS 2 ) 2 and (SmS) 1.19 (TaS 2 ) 2, two composite misfit-layered sulfides, react directly with cobaltocene (CoCp 2 ) in acetonitrile solutions to form novel intercalation compounds of composition (CeS) 1.15 (TaS 2 ) 2 (CoCp 2 ) 0.31 and (SmS) 1.19 (TaS 2 ) 2 (CoCp 2 ) 0.30, respectively. T…
The localised corrosion resistance (pitting and crevice corrosion) of two high alloy stainless steels, namely superduplex (SD) and superaustenitic (SA), has been studied in chloride-fluoride solutions at pH values ranging from 2 to 6.5. The pitting potential (Epit) and crevice potential (Ecre) have been calculated for…
The R-specific alcohol dehydrogenase (RADH) from Lactobacillus brevis is a valuable catalyst for the production of chiral alcohols that can be used as synthons in asymmetric syntheses. RADH is a homotetramer with 222 symmetry and a molecular mass of 107 kDa. The recombinant enzyme has been expressed in Escherichia col…
Diatom, hydrocarbons and fatty acid sedimentary records were used for reconstructing the recent (last 150 years) palaeolimnological history of Laguna Chica of San Pedro (Concepción, VIII Región, Chile). Cluster analyses (Constrained Incremental Sum of Squares) on the diatom data revealed three distinct periods. The fi…
Time and humidity greatly influence particle adhesion and removal in many particlesubstrate systems. The effect of time (aging) and humidity on the adhesion and removal of 22 μm PSL (Polystyrene Latex) particles on polished silicon wafers is investigated. The results show that the effect of time on the adhesion and re…
To improve the wrinkle recovery as well as the performance properties of garments, wool fabric is treated separately with epoxide, silicone polymers, and a mixture of the two, where the two reagents are sequentially applied in a simple pad-dry-cure process. Each reagent improves the wrinkle recovery of wool by a diffe…
Abstract A direct-space program (ESPOIR) for the crystal structure solution of small molecules, from powder diffraction data, is developed under the GNU Public License. The program allows solving the structures of the two samples distributed during the Structure Determination by Powder Diffractometry Round Robin (SDPD…
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…